elf32-ppc.c revision 1.8 1 1.1 christos /* PowerPC-specific support for 32-bit ELF
2 1.7 christos Copyright (C) 1994-2018 Free Software Foundation, Inc.
3 1.1 christos Written by Ian Lance Taylor, Cygnus Support.
4 1.1 christos
5 1.1 christos This file is part of BFD, the Binary File Descriptor library.
6 1.1 christos
7 1.1 christos This program is free software; you can redistribute it and/or modify
8 1.1 christos it under the terms of the GNU General Public License as published by
9 1.1 christos the Free Software Foundation; either version 3 of the License, or
10 1.1 christos (at your option) any later version.
11 1.1 christos
12 1.1 christos This program is distributed in the hope that it will be useful,
13 1.1 christos but WITHOUT ANY WARRANTY; without even the implied warranty of
14 1.1 christos MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 1.1 christos GNU General Public License for more details.
16 1.1 christos
17 1.1 christos You should have received a copy of the GNU General Public License
18 1.1 christos along with this program; if not, write to the
19 1.1 christos Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
20 1.1 christos Boston, MA 02110-1301, USA. */
21 1.1 christos
22 1.1 christos
23 1.1 christos /* This file is based on a preliminary PowerPC ELF ABI. The
24 1.1 christos information may not match the final PowerPC ELF ABI. It includes
25 1.1 christos suggestions from the in-progress Embedded PowerPC ABI, and that
26 1.1 christos information may also not match. */
27 1.1 christos
28 1.1 christos #include "sysdep.h"
29 1.1 christos #include <stdarg.h>
30 1.1 christos #include "bfd.h"
31 1.1 christos #include "bfdlink.h"
32 1.1 christos #include "libbfd.h"
33 1.1 christos #include "elf-bfd.h"
34 1.1 christos #include "elf/ppc.h"
35 1.1 christos #include "elf32-ppc.h"
36 1.1 christos #include "elf-vxworks.h"
37 1.1 christos #include "dwarf2.h"
38 1.7 christos #include "opcode/ppc.h"
39 1.1 christos
40 1.1 christos typedef enum split16_format_type
41 1.1 christos {
42 1.1 christos split16a_type = 0,
43 1.1 christos split16d_type
44 1.1 christos }
45 1.1 christos split16_format_type;
46 1.1 christos
47 1.1 christos /* RELA relocations are used here. */
48 1.1 christos
49 1.1 christos static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
50 1.1 christos (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
51 1.1 christos static bfd_reloc_status_type ppc_elf_unhandled_reloc
52 1.1 christos (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
53 1.1 christos
54 1.1 christos /* Branch prediction bit for branch taken relocs. */
55 1.1 christos #define BRANCH_PREDICT_BIT 0x200000
56 1.1 christos /* Mask to set RA in memory instructions. */
57 1.1 christos #define RA_REGISTER_MASK 0x001f0000
58 1.1 christos /* Value to shift register by to insert RA. */
59 1.1 christos #define RA_REGISTER_SHIFT 16
60 1.1 christos
61 1.1 christos /* The name of the dynamic interpreter. This is put in the .interp
62 1.1 christos section. */
63 1.1 christos #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
64 1.1 christos
65 1.1 christos /* For old-style PLT. */
66 1.1 christos /* The number of single-slot PLT entries (the rest use two slots). */
67 1.1 christos #define PLT_NUM_SINGLE_ENTRIES 8192
68 1.1 christos
69 1.1 christos /* For new-style .glink and .plt. */
70 1.1 christos #define GLINK_PLTRESOLVE 16*4
71 1.7 christos #define GLINK_ENTRY_SIZE(htab, h) \
72 1.7 christos ((4*4 \
73 1.7 christos + (h != NULL \
74 1.7 christos && h == htab->tls_get_addr \
75 1.7 christos && !htab->params->no_tls_get_addr_opt ? 8*4 : 0) \
76 1.7 christos + (1u << htab->params->plt_stub_align) - 1) \
77 1.7 christos & -(1u << htab->params->plt_stub_align))
78 1.1 christos
79 1.1 christos /* VxWorks uses its own plt layout, filled in by the static linker. */
80 1.1 christos
81 1.1 christos /* The standard VxWorks PLT entry. */
82 1.1 christos #define VXWORKS_PLT_ENTRY_SIZE 32
83 1.1 christos static const bfd_vma ppc_elf_vxworks_plt_entry
84 1.1 christos [VXWORKS_PLT_ENTRY_SIZE / 4] =
85 1.1 christos {
86 1.7 christos 0x3d800000, /* lis r12,0 */
87 1.7 christos 0x818c0000, /* lwz r12,0(r12) */
88 1.7 christos 0x7d8903a6, /* mtctr r12 */
89 1.7 christos 0x4e800420, /* bctr */
90 1.7 christos 0x39600000, /* li r11,0 */
91 1.7 christos 0x48000000, /* b 14 <.PLT0resolve+0x4> */
92 1.7 christos 0x60000000, /* nop */
93 1.7 christos 0x60000000, /* nop */
94 1.1 christos };
95 1.1 christos static const bfd_vma ppc_elf_vxworks_pic_plt_entry
96 1.1 christos [VXWORKS_PLT_ENTRY_SIZE / 4] =
97 1.1 christos {
98 1.1 christos 0x3d9e0000, /* addis r12,r30,0 */
99 1.1 christos 0x818c0000, /* lwz r12,0(r12) */
100 1.1 christos 0x7d8903a6, /* mtctr r12 */
101 1.1 christos 0x4e800420, /* bctr */
102 1.1 christos 0x39600000, /* li r11,0 */
103 1.1 christos 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
104 1.1 christos 0x60000000, /* nop */
105 1.1 christos 0x60000000, /* nop */
106 1.1 christos };
107 1.1 christos
108 1.1 christos /* The initial VxWorks PLT entry. */
109 1.1 christos #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
110 1.1 christos static const bfd_vma ppc_elf_vxworks_plt0_entry
111 1.1 christos [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
112 1.1 christos {
113 1.7 christos 0x3d800000, /* lis r12,0 */
114 1.7 christos 0x398c0000, /* addi r12,r12,0 */
115 1.7 christos 0x800c0008, /* lwz r0,8(r12) */
116 1.7 christos 0x7c0903a6, /* mtctr r0 */
117 1.7 christos 0x818c0004, /* lwz r12,4(r12) */
118 1.7 christos 0x4e800420, /* bctr */
119 1.7 christos 0x60000000, /* nop */
120 1.7 christos 0x60000000, /* nop */
121 1.1 christos };
122 1.1 christos static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
123 1.1 christos [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
124 1.1 christos {
125 1.1 christos 0x819e0008, /* lwz r12,8(r30) */
126 1.7 christos 0x7d8903a6, /* mtctr r12 */
127 1.1 christos 0x819e0004, /* lwz r12,4(r30) */
128 1.7 christos 0x4e800420, /* bctr */
129 1.7 christos 0x60000000, /* nop */
130 1.7 christos 0x60000000, /* nop */
131 1.7 christos 0x60000000, /* nop */
132 1.7 christos 0x60000000, /* nop */
133 1.1 christos };
134 1.1 christos
135 1.1 christos /* For executables, we have some additional relocations in
136 1.1 christos .rela.plt.unloaded, for the kernel loader. */
137 1.1 christos
138 1.1 christos /* The number of non-JMP_SLOT relocations per PLT0 slot. */
139 1.1 christos #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
140 1.1 christos /* The number of relocations in the PLTResolve slot. */
141 1.1 christos #define VXWORKS_PLTRESOLVE_RELOCS 2
142 1.7 christos /* The number of relocations in the PLTResolve slot when creating
143 1.1 christos a shared library. */
144 1.1 christos #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
145 1.1 christos
146 1.1 christos /* Some instructions. */
147 1.1 christos #define ADDIS_11_11 0x3d6b0000
148 1.1 christos #define ADDIS_11_30 0x3d7e0000
149 1.1 christos #define ADDIS_12_12 0x3d8c0000
150 1.1 christos #define ADDI_11_11 0x396b0000
151 1.1 christos #define ADD_0_11_11 0x7c0b5a14
152 1.1 christos #define ADD_3_12_2 0x7c6c1214
153 1.1 christos #define ADD_11_0_11 0x7d605a14
154 1.1 christos #define B 0x48000000
155 1.3 christos #define BA 0x48000002
156 1.1 christos #define BCL_20_31 0x429f0005
157 1.1 christos #define BCTR 0x4e800420
158 1.1 christos #define BEQLR 0x4d820020
159 1.1 christos #define CMPWI_11_0 0x2c0b0000
160 1.1 christos #define LIS_11 0x3d600000
161 1.1 christos #define LIS_12 0x3d800000
162 1.1 christos #define LWZU_0_12 0x840c0000
163 1.1 christos #define LWZ_0_12 0x800c0000
164 1.1 christos #define LWZ_11_3 0x81630000
165 1.1 christos #define LWZ_11_11 0x816b0000
166 1.1 christos #define LWZ_11_30 0x817e0000
167 1.1 christos #define LWZ_12_3 0x81830000
168 1.1 christos #define LWZ_12_12 0x818c0000
169 1.1 christos #define MR_0_3 0x7c601b78
170 1.1 christos #define MR_3_0 0x7c030378
171 1.1 christos #define MFLR_0 0x7c0802a6
172 1.1 christos #define MFLR_12 0x7d8802a6
173 1.1 christos #define MTCTR_0 0x7c0903a6
174 1.1 christos #define MTCTR_11 0x7d6903a6
175 1.1 christos #define MTLR_0 0x7c0803a6
176 1.1 christos #define NOP 0x60000000
177 1.1 christos #define SUB_11_11_12 0x7d6c5850
178 1.1 christos
179 1.1 christos /* Offset of tp and dtp pointers from start of TLS block. */
180 1.1 christos #define TP_OFFSET 0x7000
181 1.1 christos #define DTP_OFFSET 0x8000
182 1.1 christos
183 1.1 christos /* The value of a defined global symbol. */
184 1.1 christos #define SYM_VAL(SYM) \
185 1.1 christos ((SYM)->root.u.def.section->output_section->vma \
186 1.1 christos + (SYM)->root.u.def.section->output_offset \
187 1.1 christos + (SYM)->root.u.def.value)
188 1.1 christos
189 1.1 christos static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
191 1.1 christos
192 1.1 christos static reloc_howto_type ppc_elf_howto_raw[] = {
193 1.1 christos /* This reloc does nothing. */
194 1.1 christos HOWTO (R_PPC_NONE, /* type */
195 1.3 christos 0, /* rightshift */
196 1.3 christos 3, /* size (0 = byte, 1 = short, 2 = long) */
197 1.1 christos 0, /* bitsize */
198 1.1 christos FALSE, /* pc_relative */
199 1.3 christos 0, /* bitpos */
200 1.1 christos complain_overflow_dont, /* complain_on_overflow */
201 1.1 christos bfd_elf_generic_reloc, /* special_function */
202 1.1 christos "R_PPC_NONE", /* name */
203 1.1 christos FALSE, /* partial_inplace */
204 1.1 christos 0, /* src_mask */
205 1.1 christos 0, /* dst_mask */
206 1.1 christos FALSE), /* pcrel_offset */
207 1.1 christos
208 1.1 christos /* A standard 32 bit relocation. */
209 1.1 christos HOWTO (R_PPC_ADDR32, /* type */
210 1.1 christos 0, /* rightshift */
211 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
212 1.1 christos 32, /* bitsize */
213 1.1 christos FALSE, /* pc_relative */
214 1.3 christos 0, /* bitpos */
215 1.1 christos complain_overflow_dont, /* complain_on_overflow */
216 1.1 christos bfd_elf_generic_reloc, /* special_function */
217 1.1 christos "R_PPC_ADDR32", /* name */
218 1.1 christos FALSE, /* partial_inplace */
219 1.1 christos 0, /* src_mask */
220 1.1 christos 0xffffffff, /* dst_mask */
221 1.1 christos FALSE), /* pcrel_offset */
222 1.1 christos
223 1.1 christos /* An absolute 26 bit branch; the lower two bits must be zero.
224 1.1 christos FIXME: we don't check that, we just clear them. */
225 1.1 christos HOWTO (R_PPC_ADDR24, /* type */
226 1.1 christos 0, /* rightshift */
227 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
228 1.1 christos 26, /* bitsize */
229 1.1 christos FALSE, /* pc_relative */
230 1.3 christos 0, /* bitpos */
231 1.1 christos complain_overflow_signed, /* complain_on_overflow */
232 1.1 christos bfd_elf_generic_reloc, /* special_function */
233 1.1 christos "R_PPC_ADDR24", /* name */
234 1.1 christos FALSE, /* partial_inplace */
235 1.1 christos 0, /* src_mask */
236 1.1 christos 0x3fffffc, /* dst_mask */
237 1.1 christos FALSE), /* pcrel_offset */
238 1.1 christos
239 1.1 christos /* A standard 16 bit relocation. */
240 1.1 christos HOWTO (R_PPC_ADDR16, /* type */
241 1.1 christos 0, /* rightshift */
242 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
243 1.1 christos 16, /* bitsize */
244 1.1 christos FALSE, /* pc_relative */
245 1.1 christos 0, /* bitpos */
246 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
247 1.1 christos bfd_elf_generic_reloc, /* special_function */
248 1.1 christos "R_PPC_ADDR16", /* name */
249 1.1 christos FALSE, /* partial_inplace */
250 1.1 christos 0, /* src_mask */
251 1.1 christos 0xffff, /* dst_mask */
252 1.1 christos FALSE), /* pcrel_offset */
253 1.1 christos
254 1.1 christos /* A 16 bit relocation without overflow. */
255 1.1 christos HOWTO (R_PPC_ADDR16_LO, /* type */
256 1.1 christos 0, /* rightshift */
257 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
258 1.1 christos 16, /* bitsize */
259 1.1 christos FALSE, /* pc_relative */
260 1.1 christos 0, /* bitpos */
261 1.1 christos complain_overflow_dont,/* complain_on_overflow */
262 1.1 christos bfd_elf_generic_reloc, /* special_function */
263 1.1 christos "R_PPC_ADDR16_LO", /* name */
264 1.1 christos FALSE, /* partial_inplace */
265 1.1 christos 0, /* src_mask */
266 1.1 christos 0xffff, /* dst_mask */
267 1.1 christos FALSE), /* pcrel_offset */
268 1.1 christos
269 1.1 christos /* The high order 16 bits of an address. */
270 1.1 christos HOWTO (R_PPC_ADDR16_HI, /* type */
271 1.1 christos 16, /* rightshift */
272 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
273 1.1 christos 16, /* bitsize */
274 1.1 christos FALSE, /* pc_relative */
275 1.1 christos 0, /* bitpos */
276 1.1 christos complain_overflow_dont, /* complain_on_overflow */
277 1.1 christos bfd_elf_generic_reloc, /* special_function */
278 1.1 christos "R_PPC_ADDR16_HI", /* name */
279 1.1 christos FALSE, /* partial_inplace */
280 1.1 christos 0, /* src_mask */
281 1.1 christos 0xffff, /* dst_mask */
282 1.1 christos FALSE), /* pcrel_offset */
283 1.1 christos
284 1.1 christos /* The high order 16 bits of an address, plus 1 if the contents of
285 1.1 christos the low 16 bits, treated as a signed number, is negative. */
286 1.1 christos HOWTO (R_PPC_ADDR16_HA, /* type */
287 1.1 christos 16, /* rightshift */
288 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
289 1.1 christos 16, /* bitsize */
290 1.1 christos FALSE, /* pc_relative */
291 1.1 christos 0, /* bitpos */
292 1.1 christos complain_overflow_dont, /* complain_on_overflow */
293 1.1 christos ppc_elf_addr16_ha_reloc, /* special_function */
294 1.1 christos "R_PPC_ADDR16_HA", /* name */
295 1.1 christos FALSE, /* partial_inplace */
296 1.1 christos 0, /* src_mask */
297 1.1 christos 0xffff, /* dst_mask */
298 1.1 christos FALSE), /* pcrel_offset */
299 1.1 christos
300 1.1 christos /* An absolute 16 bit branch; the lower two bits must be zero.
301 1.1 christos FIXME: we don't check that, we just clear them. */
302 1.1 christos HOWTO (R_PPC_ADDR14, /* type */
303 1.1 christos 0, /* rightshift */
304 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
305 1.1 christos 16, /* bitsize */
306 1.1 christos FALSE, /* pc_relative */
307 1.3 christos 0, /* bitpos */
308 1.1 christos complain_overflow_signed, /* complain_on_overflow */
309 1.1 christos bfd_elf_generic_reloc, /* special_function */
310 1.1 christos "R_PPC_ADDR14", /* name */
311 1.1 christos FALSE, /* partial_inplace */
312 1.1 christos 0, /* src_mask */
313 1.1 christos 0xfffc, /* dst_mask */
314 1.1 christos FALSE), /* pcrel_offset */
315 1.1 christos
316 1.1 christos /* An absolute 16 bit branch, for which bit 10 should be set to
317 1.1 christos indicate that the branch is expected to be taken. The lower two
318 1.1 christos bits must be zero. */
319 1.1 christos HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
320 1.1 christos 0, /* rightshift */
321 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
322 1.1 christos 16, /* bitsize */
323 1.1 christos FALSE, /* pc_relative */
324 1.3 christos 0, /* bitpos */
325 1.1 christos complain_overflow_signed, /* complain_on_overflow */
326 1.1 christos bfd_elf_generic_reloc, /* special_function */
327 1.1 christos "R_PPC_ADDR14_BRTAKEN",/* name */
328 1.1 christos FALSE, /* partial_inplace */
329 1.1 christos 0, /* src_mask */
330 1.1 christos 0xfffc, /* dst_mask */
331 1.1 christos FALSE), /* pcrel_offset */
332 1.1 christos
333 1.1 christos /* An absolute 16 bit branch, for which bit 10 should be set to
334 1.1 christos indicate that the branch is not expected to be taken. The lower
335 1.1 christos two bits must be zero. */
336 1.1 christos HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
337 1.1 christos 0, /* rightshift */
338 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
339 1.1 christos 16, /* bitsize */
340 1.1 christos FALSE, /* pc_relative */
341 1.3 christos 0, /* bitpos */
342 1.1 christos complain_overflow_signed, /* complain_on_overflow */
343 1.1 christos bfd_elf_generic_reloc, /* special_function */
344 1.1 christos "R_PPC_ADDR14_BRNTAKEN",/* name */
345 1.1 christos FALSE, /* partial_inplace */
346 1.1 christos 0, /* src_mask */
347 1.1 christos 0xfffc, /* dst_mask */
348 1.1 christos FALSE), /* pcrel_offset */
349 1.1 christos
350 1.1 christos /* A relative 26 bit branch; the lower two bits must be zero. */
351 1.1 christos HOWTO (R_PPC_REL24, /* type */
352 1.1 christos 0, /* rightshift */
353 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
354 1.1 christos 26, /* bitsize */
355 1.1 christos TRUE, /* pc_relative */
356 1.1 christos 0, /* bitpos */
357 1.1 christos complain_overflow_signed, /* complain_on_overflow */
358 1.1 christos bfd_elf_generic_reloc, /* special_function */
359 1.1 christos "R_PPC_REL24", /* name */
360 1.1 christos FALSE, /* partial_inplace */
361 1.1 christos 0, /* src_mask */
362 1.1 christos 0x3fffffc, /* dst_mask */
363 1.1 christos TRUE), /* pcrel_offset */
364 1.1 christos
365 1.1 christos /* A relative 16 bit branch; the lower two bits must be zero. */
366 1.1 christos HOWTO (R_PPC_REL14, /* type */
367 1.1 christos 0, /* rightshift */
368 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
369 1.1 christos 16, /* bitsize */
370 1.1 christos TRUE, /* pc_relative */
371 1.1 christos 0, /* bitpos */
372 1.1 christos complain_overflow_signed, /* complain_on_overflow */
373 1.1 christos bfd_elf_generic_reloc, /* special_function */
374 1.1 christos "R_PPC_REL14", /* name */
375 1.1 christos FALSE, /* partial_inplace */
376 1.1 christos 0, /* src_mask */
377 1.1 christos 0xfffc, /* dst_mask */
378 1.1 christos TRUE), /* pcrel_offset */
379 1.1 christos
380 1.1 christos /* A relative 16 bit branch. Bit 10 should be set to indicate that
381 1.1 christos the branch is expected to be taken. The lower two bits must be
382 1.1 christos zero. */
383 1.1 christos HOWTO (R_PPC_REL14_BRTAKEN, /* type */
384 1.1 christos 0, /* rightshift */
385 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
386 1.1 christos 16, /* bitsize */
387 1.1 christos TRUE, /* pc_relative */
388 1.1 christos 0, /* bitpos */
389 1.1 christos complain_overflow_signed, /* complain_on_overflow */
390 1.1 christos bfd_elf_generic_reloc, /* special_function */
391 1.1 christos "R_PPC_REL14_BRTAKEN", /* name */
392 1.1 christos FALSE, /* partial_inplace */
393 1.1 christos 0, /* src_mask */
394 1.1 christos 0xfffc, /* dst_mask */
395 1.1 christos TRUE), /* pcrel_offset */
396 1.1 christos
397 1.1 christos /* A relative 16 bit branch. Bit 10 should be set to indicate that
398 1.1 christos the branch is not expected to be taken. The lower two bits must
399 1.1 christos be zero. */
400 1.1 christos HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
401 1.1 christos 0, /* rightshift */
402 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
403 1.1 christos 16, /* bitsize */
404 1.1 christos TRUE, /* pc_relative */
405 1.1 christos 0, /* bitpos */
406 1.1 christos complain_overflow_signed, /* complain_on_overflow */
407 1.1 christos bfd_elf_generic_reloc, /* special_function */
408 1.1 christos "R_PPC_REL14_BRNTAKEN",/* name */
409 1.1 christos FALSE, /* partial_inplace */
410 1.1 christos 0, /* src_mask */
411 1.1 christos 0xfffc, /* dst_mask */
412 1.1 christos TRUE), /* pcrel_offset */
413 1.1 christos
414 1.1 christos /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
415 1.1 christos symbol. */
416 1.1 christos HOWTO (R_PPC_GOT16, /* type */
417 1.1 christos 0, /* rightshift */
418 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
419 1.1 christos 16, /* bitsize */
420 1.1 christos FALSE, /* pc_relative */
421 1.1 christos 0, /* bitpos */
422 1.7 christos complain_overflow_signed, /* complain_on_overflow */
423 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
424 1.1 christos "R_PPC_GOT16", /* name */
425 1.1 christos FALSE, /* partial_inplace */
426 1.1 christos 0, /* src_mask */
427 1.1 christos 0xffff, /* dst_mask */
428 1.1 christos FALSE), /* pcrel_offset */
429 1.1 christos
430 1.1 christos /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
431 1.1 christos the symbol. */
432 1.1 christos HOWTO (R_PPC_GOT16_LO, /* type */
433 1.1 christos 0, /* rightshift */
434 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
435 1.1 christos 16, /* bitsize */
436 1.1 christos FALSE, /* pc_relative */
437 1.1 christos 0, /* bitpos */
438 1.7 christos complain_overflow_dont, /* complain_on_overflow */
439 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
440 1.1 christos "R_PPC_GOT16_LO", /* name */
441 1.1 christos FALSE, /* partial_inplace */
442 1.1 christos 0, /* src_mask */
443 1.1 christos 0xffff, /* dst_mask */
444 1.1 christos FALSE), /* pcrel_offset */
445 1.1 christos
446 1.1 christos /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
447 1.1 christos the symbol. */
448 1.1 christos HOWTO (R_PPC_GOT16_HI, /* type */
449 1.1 christos 16, /* rightshift */
450 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
451 1.1 christos 16, /* bitsize */
452 1.1 christos FALSE, /* pc_relative */
453 1.3 christos 0, /* bitpos */
454 1.7 christos complain_overflow_dont, /* complain_on_overflow */
455 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
456 1.1 christos "R_PPC_GOT16_HI", /* name */
457 1.1 christos FALSE, /* partial_inplace */
458 1.1 christos 0, /* src_mask */
459 1.1 christos 0xffff, /* dst_mask */
460 1.1 christos FALSE), /* pcrel_offset */
461 1.1 christos
462 1.1 christos /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
463 1.1 christos the symbol. */
464 1.1 christos HOWTO (R_PPC_GOT16_HA, /* type */
465 1.1 christos 16, /* rightshift */
466 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
467 1.1 christos 16, /* bitsize */
468 1.1 christos FALSE, /* pc_relative */
469 1.3 christos 0, /* bitpos */
470 1.7 christos complain_overflow_dont, /* complain_on_overflow */
471 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
472 1.1 christos "R_PPC_GOT16_HA", /* name */
473 1.1 christos FALSE, /* partial_inplace */
474 1.1 christos 0, /* src_mask */
475 1.1 christos 0xffff, /* dst_mask */
476 1.1 christos FALSE), /* pcrel_offset */
477 1.1 christos
478 1.1 christos /* Like R_PPC_REL24, but referring to the procedure linkage table
479 1.1 christos entry for the symbol. */
480 1.1 christos HOWTO (R_PPC_PLTREL24, /* type */
481 1.1 christos 0, /* rightshift */
482 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
483 1.1 christos 26, /* bitsize */
484 1.1 christos TRUE, /* pc_relative */
485 1.7 christos 0, /* bitpos */
486 1.7 christos complain_overflow_signed, /* complain_on_overflow */
487 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
488 1.1 christos "R_PPC_PLTREL24", /* name */
489 1.1 christos FALSE, /* partial_inplace */
490 1.1 christos 0, /* src_mask */
491 1.1 christos 0x3fffffc, /* dst_mask */
492 1.1 christos TRUE), /* pcrel_offset */
493 1.1 christos
494 1.1 christos /* This is used only by the dynamic linker. The symbol should exist
495 1.1 christos both in the object being run and in some shared library. The
496 1.1 christos dynamic linker copies the data addressed by the symbol from the
497 1.1 christos shared library into the object, because the object being
498 1.1 christos run has to have the data at some particular address. */
499 1.1 christos HOWTO (R_PPC_COPY, /* type */
500 1.1 christos 0, /* rightshift */
501 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
502 1.1 christos 32, /* bitsize */
503 1.1 christos FALSE, /* pc_relative */
504 1.3 christos 0, /* bitpos */
505 1.7 christos complain_overflow_dont, /* complain_on_overflow */
506 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
507 1.1 christos "R_PPC_COPY", /* name */
508 1.1 christos FALSE, /* partial_inplace */
509 1.1 christos 0, /* src_mask */
510 1.1 christos 0, /* dst_mask */
511 1.1 christos FALSE), /* pcrel_offset */
512 1.1 christos
513 1.1 christos /* Like R_PPC_ADDR32, but used when setting global offset table
514 1.1 christos entries. */
515 1.1 christos HOWTO (R_PPC_GLOB_DAT, /* type */
516 1.1 christos 0, /* rightshift */
517 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
518 1.1 christos 32, /* bitsize */
519 1.1 christos FALSE, /* pc_relative */
520 1.3 christos 0, /* bitpos */
521 1.7 christos complain_overflow_dont, /* complain_on_overflow */
522 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
523 1.1 christos "R_PPC_GLOB_DAT", /* name */
524 1.1 christos FALSE, /* partial_inplace */
525 1.1 christos 0, /* src_mask */
526 1.1 christos 0xffffffff, /* dst_mask */
527 1.1 christos FALSE), /* pcrel_offset */
528 1.1 christos
529 1.1 christos /* Marks a procedure linkage table entry for a symbol. */
530 1.1 christos HOWTO (R_PPC_JMP_SLOT, /* type */
531 1.1 christos 0, /* rightshift */
532 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
533 1.1 christos 32, /* bitsize */
534 1.1 christos FALSE, /* pc_relative */
535 1.3 christos 0, /* bitpos */
536 1.7 christos complain_overflow_dont, /* complain_on_overflow */
537 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
538 1.1 christos "R_PPC_JMP_SLOT", /* name */
539 1.1 christos FALSE, /* partial_inplace */
540 1.1 christos 0, /* src_mask */
541 1.1 christos 0, /* dst_mask */
542 1.1 christos FALSE), /* pcrel_offset */
543 1.1 christos
544 1.1 christos /* Used only by the dynamic linker. When the object is run, this
545 1.1 christos longword is set to the load address of the object, plus the
546 1.1 christos addend. */
547 1.1 christos HOWTO (R_PPC_RELATIVE, /* type */
548 1.1 christos 0, /* rightshift */
549 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
550 1.1 christos 32, /* bitsize */
551 1.1 christos FALSE, /* pc_relative */
552 1.3 christos 0, /* bitpos */
553 1.1 christos complain_overflow_dont, /* complain_on_overflow */
554 1.1 christos bfd_elf_generic_reloc, /* special_function */
555 1.1 christos "R_PPC_RELATIVE", /* name */
556 1.1 christos FALSE, /* partial_inplace */
557 1.1 christos 0, /* src_mask */
558 1.1 christos 0xffffffff, /* dst_mask */
559 1.1 christos FALSE), /* pcrel_offset */
560 1.1 christos
561 1.1 christos /* Like R_PPC_REL24, but uses the value of the symbol within the
562 1.1 christos object rather than the final value. Normally used for
563 1.1 christos _GLOBAL_OFFSET_TABLE_. */
564 1.1 christos HOWTO (R_PPC_LOCAL24PC, /* type */
565 1.1 christos 0, /* rightshift */
566 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
567 1.1 christos 26, /* bitsize */
568 1.1 christos TRUE, /* pc_relative */
569 1.1 christos 0, /* bitpos */
570 1.1 christos complain_overflow_signed, /* complain_on_overflow */
571 1.1 christos bfd_elf_generic_reloc, /* special_function */
572 1.1 christos "R_PPC_LOCAL24PC", /* name */
573 1.1 christos FALSE, /* partial_inplace */
574 1.1 christos 0, /* src_mask */
575 1.1 christos 0x3fffffc, /* dst_mask */
576 1.1 christos TRUE), /* pcrel_offset */
577 1.1 christos
578 1.1 christos /* Like R_PPC_ADDR32, but may be unaligned. */
579 1.1 christos HOWTO (R_PPC_UADDR32, /* type */
580 1.1 christos 0, /* rightshift */
581 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
582 1.1 christos 32, /* bitsize */
583 1.1 christos FALSE, /* pc_relative */
584 1.3 christos 0, /* bitpos */
585 1.1 christos complain_overflow_dont, /* complain_on_overflow */
586 1.1 christos bfd_elf_generic_reloc, /* special_function */
587 1.1 christos "R_PPC_UADDR32", /* name */
588 1.1 christos FALSE, /* partial_inplace */
589 1.1 christos 0, /* src_mask */
590 1.1 christos 0xffffffff, /* dst_mask */
591 1.1 christos FALSE), /* pcrel_offset */
592 1.1 christos
593 1.1 christos /* Like R_PPC_ADDR16, but may be unaligned. */
594 1.1 christos HOWTO (R_PPC_UADDR16, /* type */
595 1.1 christos 0, /* rightshift */
596 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
597 1.1 christos 16, /* bitsize */
598 1.1 christos FALSE, /* pc_relative */
599 1.1 christos 0, /* bitpos */
600 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
601 1.1 christos bfd_elf_generic_reloc, /* special_function */
602 1.1 christos "R_PPC_UADDR16", /* name */
603 1.1 christos FALSE, /* partial_inplace */
604 1.1 christos 0, /* src_mask */
605 1.1 christos 0xffff, /* dst_mask */
606 1.1 christos FALSE), /* pcrel_offset */
607 1.1 christos
608 1.1 christos /* 32-bit PC relative */
609 1.1 christos HOWTO (R_PPC_REL32, /* type */
610 1.1 christos 0, /* rightshift */
611 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
612 1.1 christos 32, /* bitsize */
613 1.1 christos TRUE, /* pc_relative */
614 1.3 christos 0, /* bitpos */
615 1.1 christos complain_overflow_dont, /* complain_on_overflow */
616 1.1 christos bfd_elf_generic_reloc, /* special_function */
617 1.1 christos "R_PPC_REL32", /* name */
618 1.1 christos FALSE, /* partial_inplace */
619 1.1 christos 0, /* src_mask */
620 1.1 christos 0xffffffff, /* dst_mask */
621 1.1 christos TRUE), /* pcrel_offset */
622 1.1 christos
623 1.1 christos /* 32-bit relocation to the symbol's procedure linkage table.
624 1.1 christos FIXME: not supported. */
625 1.1 christos HOWTO (R_PPC_PLT32, /* type */
626 1.1 christos 0, /* rightshift */
627 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
628 1.1 christos 32, /* bitsize */
629 1.1 christos FALSE, /* pc_relative */
630 1.3 christos 0, /* bitpos */
631 1.7 christos complain_overflow_dont, /* complain_on_overflow */
632 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
633 1.1 christos "R_PPC_PLT32", /* name */
634 1.1 christos FALSE, /* partial_inplace */
635 1.1 christos 0, /* src_mask */
636 1.1 christos 0, /* dst_mask */
637 1.1 christos FALSE), /* pcrel_offset */
638 1.1 christos
639 1.1 christos /* 32-bit PC relative relocation to the symbol's procedure linkage table.
640 1.1 christos FIXME: not supported. */
641 1.1 christos HOWTO (R_PPC_PLTREL32, /* type */
642 1.1 christos 0, /* rightshift */
643 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
644 1.1 christos 32, /* bitsize */
645 1.1 christos TRUE, /* pc_relative */
646 1.3 christos 0, /* bitpos */
647 1.7 christos complain_overflow_dont, /* complain_on_overflow */
648 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
649 1.1 christos "R_PPC_PLTREL32", /* name */
650 1.1 christos FALSE, /* partial_inplace */
651 1.1 christos 0, /* src_mask */
652 1.1 christos 0, /* dst_mask */
653 1.1 christos TRUE), /* pcrel_offset */
654 1.1 christos
655 1.1 christos /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
656 1.1 christos the symbol. */
657 1.1 christos HOWTO (R_PPC_PLT16_LO, /* type */
658 1.1 christos 0, /* rightshift */
659 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
660 1.1 christos 16, /* bitsize */
661 1.1 christos FALSE, /* pc_relative */
662 1.1 christos 0, /* bitpos */
663 1.7 christos complain_overflow_dont, /* complain_on_overflow */
664 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
665 1.1 christos "R_PPC_PLT16_LO", /* name */
666 1.1 christos FALSE, /* partial_inplace */
667 1.1 christos 0, /* src_mask */
668 1.1 christos 0xffff, /* dst_mask */
669 1.1 christos FALSE), /* pcrel_offset */
670 1.1 christos
671 1.1 christos /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
672 1.1 christos the symbol. */
673 1.1 christos HOWTO (R_PPC_PLT16_HI, /* type */
674 1.1 christos 16, /* rightshift */
675 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
676 1.1 christos 16, /* bitsize */
677 1.1 christos FALSE, /* pc_relative */
678 1.3 christos 0, /* bitpos */
679 1.7 christos complain_overflow_dont, /* complain_on_overflow */
680 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
681 1.1 christos "R_PPC_PLT16_HI", /* name */
682 1.1 christos FALSE, /* partial_inplace */
683 1.1 christos 0, /* src_mask */
684 1.1 christos 0xffff, /* dst_mask */
685 1.1 christos FALSE), /* pcrel_offset */
686 1.1 christos
687 1.1 christos /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
688 1.1 christos the symbol. */
689 1.1 christos HOWTO (R_PPC_PLT16_HA, /* type */
690 1.1 christos 16, /* rightshift */
691 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
692 1.1 christos 16, /* bitsize */
693 1.1 christos FALSE, /* pc_relative */
694 1.3 christos 0, /* bitpos */
695 1.7 christos complain_overflow_dont, /* complain_on_overflow */
696 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
697 1.1 christos "R_PPC_PLT16_HA", /* name */
698 1.1 christos FALSE, /* partial_inplace */
699 1.1 christos 0, /* src_mask */
700 1.1 christos 0xffff, /* dst_mask */
701 1.1 christos FALSE), /* pcrel_offset */
702 1.1 christos
703 1.1 christos /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
704 1.1 christos small data items. */
705 1.1 christos HOWTO (R_PPC_SDAREL16, /* type */
706 1.1 christos 0, /* rightshift */
707 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
708 1.1 christos 16, /* bitsize */
709 1.1 christos FALSE, /* pc_relative */
710 1.1 christos 0, /* bitpos */
711 1.7 christos complain_overflow_signed, /* complain_on_overflow */
712 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
713 1.1 christos "R_PPC_SDAREL16", /* name */
714 1.1 christos FALSE, /* partial_inplace */
715 1.1 christos 0, /* src_mask */
716 1.1 christos 0xffff, /* dst_mask */
717 1.1 christos FALSE), /* pcrel_offset */
718 1.1 christos
719 1.1 christos /* 16-bit section relative relocation. */
720 1.1 christos HOWTO (R_PPC_SECTOFF, /* type */
721 1.1 christos 0, /* rightshift */
722 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
723 1.1 christos 16, /* bitsize */
724 1.1 christos FALSE, /* pc_relative */
725 1.3 christos 0, /* bitpos */
726 1.7 christos complain_overflow_signed, /* complain_on_overflow */
727 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
728 1.1 christos "R_PPC_SECTOFF", /* name */
729 1.1 christos FALSE, /* partial_inplace */
730 1.1 christos 0, /* src_mask */
731 1.1 christos 0xffff, /* dst_mask */
732 1.1 christos FALSE), /* pcrel_offset */
733 1.1 christos
734 1.1 christos /* 16-bit lower half section relative relocation. */
735 1.1 christos HOWTO (R_PPC_SECTOFF_LO, /* type */
736 1.1 christos 0, /* rightshift */
737 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
738 1.1 christos 16, /* bitsize */
739 1.1 christos FALSE, /* pc_relative */
740 1.1 christos 0, /* bitpos */
741 1.7 christos complain_overflow_dont, /* complain_on_overflow */
742 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
743 1.1 christos "R_PPC_SECTOFF_LO", /* name */
744 1.1 christos FALSE, /* partial_inplace */
745 1.1 christos 0, /* src_mask */
746 1.1 christos 0xffff, /* dst_mask */
747 1.1 christos FALSE), /* pcrel_offset */
748 1.1 christos
749 1.1 christos /* 16-bit upper half section relative relocation. */
750 1.1 christos HOWTO (R_PPC_SECTOFF_HI, /* type */
751 1.1 christos 16, /* rightshift */
752 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
753 1.1 christos 16, /* bitsize */
754 1.1 christos FALSE, /* pc_relative */
755 1.3 christos 0, /* bitpos */
756 1.7 christos complain_overflow_dont, /* complain_on_overflow */
757 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
758 1.1 christos "R_PPC_SECTOFF_HI", /* name */
759 1.1 christos FALSE, /* partial_inplace */
760 1.1 christos 0, /* src_mask */
761 1.1 christos 0xffff, /* dst_mask */
762 1.1 christos FALSE), /* pcrel_offset */
763 1.1 christos
764 1.1 christos /* 16-bit upper half adjusted section relative relocation. */
765 1.1 christos HOWTO (R_PPC_SECTOFF_HA, /* type */
766 1.1 christos 16, /* rightshift */
767 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
768 1.1 christos 16, /* bitsize */
769 1.1 christos FALSE, /* pc_relative */
770 1.3 christos 0, /* bitpos */
771 1.7 christos complain_overflow_dont, /* complain_on_overflow */
772 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
773 1.1 christos "R_PPC_SECTOFF_HA", /* name */
774 1.1 christos FALSE, /* partial_inplace */
775 1.1 christos 0, /* src_mask */
776 1.1 christos 0xffff, /* dst_mask */
777 1.1 christos FALSE), /* pcrel_offset */
778 1.1 christos
779 1.1 christos /* Marker relocs for TLS. */
780 1.1 christos HOWTO (R_PPC_TLS,
781 1.1 christos 0, /* rightshift */
782 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
783 1.1 christos 32, /* bitsize */
784 1.1 christos FALSE, /* pc_relative */
785 1.1 christos 0, /* bitpos */
786 1.1 christos complain_overflow_dont, /* complain_on_overflow */
787 1.1 christos bfd_elf_generic_reloc, /* special_function */
788 1.1 christos "R_PPC_TLS", /* name */
789 1.1 christos FALSE, /* partial_inplace */
790 1.1 christos 0, /* src_mask */
791 1.1 christos 0, /* dst_mask */
792 1.1 christos FALSE), /* pcrel_offset */
793 1.1 christos
794 1.1 christos HOWTO (R_PPC_TLSGD,
795 1.1 christos 0, /* rightshift */
796 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
797 1.1 christos 32, /* bitsize */
798 1.1 christos FALSE, /* pc_relative */
799 1.1 christos 0, /* bitpos */
800 1.1 christos complain_overflow_dont, /* complain_on_overflow */
801 1.1 christos bfd_elf_generic_reloc, /* special_function */
802 1.1 christos "R_PPC_TLSGD", /* name */
803 1.1 christos FALSE, /* partial_inplace */
804 1.1 christos 0, /* src_mask */
805 1.1 christos 0, /* dst_mask */
806 1.1 christos FALSE), /* pcrel_offset */
807 1.1 christos
808 1.1 christos HOWTO (R_PPC_TLSLD,
809 1.1 christos 0, /* rightshift */
810 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
811 1.1 christos 32, /* bitsize */
812 1.1 christos FALSE, /* pc_relative */
813 1.1 christos 0, /* bitpos */
814 1.1 christos complain_overflow_dont, /* complain_on_overflow */
815 1.1 christos bfd_elf_generic_reloc, /* special_function */
816 1.1 christos "R_PPC_TLSLD", /* name */
817 1.1 christos FALSE, /* partial_inplace */
818 1.1 christos 0, /* src_mask */
819 1.1 christos 0, /* dst_mask */
820 1.1 christos FALSE), /* pcrel_offset */
821 1.7 christos
822 1.7 christos /* Marker relocs on inline plt call instructions. */
823 1.7 christos HOWTO (R_PPC_PLTSEQ,
824 1.7 christos 0, /* rightshift */
825 1.7 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
826 1.7 christos 32, /* bitsize */
827 1.7 christos FALSE, /* pc_relative */
828 1.7 christos 0, /* bitpos */
829 1.7 christos complain_overflow_dont, /* complain_on_overflow */
830 1.7 christos bfd_elf_generic_reloc, /* special_function */
831 1.7 christos "R_PPC_PLTSEQ", /* name */
832 1.7 christos FALSE, /* partial_inplace */
833 1.7 christos 0, /* src_mask */
834 1.7 christos 0, /* dst_mask */
835 1.7 christos FALSE), /* pcrel_offset */
836 1.7 christos
837 1.7 christos HOWTO (R_PPC_PLTCALL,
838 1.7 christos 0, /* rightshift */
839 1.7 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
840 1.7 christos 32, /* bitsize */
841 1.7 christos FALSE, /* pc_relative */
842 1.7 christos 0, /* bitpos */
843 1.7 christos complain_overflow_dont, /* complain_on_overflow */
844 1.7 christos bfd_elf_generic_reloc, /* special_function */
845 1.7 christos "R_PPC_PLTCALL", /* name */
846 1.7 christos FALSE, /* partial_inplace */
847 1.7 christos 0, /* src_mask */
848 1.7 christos 0, /* dst_mask */
849 1.7 christos FALSE), /* pcrel_offset */
850 1.1 christos
851 1.1 christos /* Computes the load module index of the load module that contains the
852 1.1 christos definition of its TLS sym. */
853 1.1 christos HOWTO (R_PPC_DTPMOD32,
854 1.1 christos 0, /* rightshift */
855 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
856 1.1 christos 32, /* bitsize */
857 1.1 christos FALSE, /* pc_relative */
858 1.1 christos 0, /* bitpos */
859 1.1 christos complain_overflow_dont, /* complain_on_overflow */
860 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
861 1.1 christos "R_PPC_DTPMOD32", /* name */
862 1.1 christos FALSE, /* partial_inplace */
863 1.1 christos 0, /* src_mask */
864 1.1 christos 0xffffffff, /* dst_mask */
865 1.1 christos FALSE), /* pcrel_offset */
866 1.1 christos
867 1.1 christos /* Computes a dtv-relative displacement, the difference between the value
868 1.1 christos of sym+add and the base address of the thread-local storage block that
869 1.1 christos contains the definition of sym, minus 0x8000. */
870 1.1 christos HOWTO (R_PPC_DTPREL32,
871 1.1 christos 0, /* rightshift */
872 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
873 1.1 christos 32, /* bitsize */
874 1.1 christos FALSE, /* pc_relative */
875 1.1 christos 0, /* bitpos */
876 1.1 christos complain_overflow_dont, /* complain_on_overflow */
877 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
878 1.1 christos "R_PPC_DTPREL32", /* name */
879 1.1 christos FALSE, /* partial_inplace */
880 1.1 christos 0, /* src_mask */
881 1.1 christos 0xffffffff, /* dst_mask */
882 1.1 christos FALSE), /* pcrel_offset */
883 1.1 christos
884 1.1 christos /* A 16 bit dtprel reloc. */
885 1.1 christos HOWTO (R_PPC_DTPREL16,
886 1.1 christos 0, /* rightshift */
887 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
888 1.1 christos 16, /* bitsize */
889 1.1 christos FALSE, /* pc_relative */
890 1.1 christos 0, /* bitpos */
891 1.1 christos complain_overflow_signed, /* complain_on_overflow */
892 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
893 1.1 christos "R_PPC_DTPREL16", /* name */
894 1.1 christos FALSE, /* partial_inplace */
895 1.1 christos 0, /* src_mask */
896 1.1 christos 0xffff, /* dst_mask */
897 1.1 christos FALSE), /* pcrel_offset */
898 1.1 christos
899 1.1 christos /* Like DTPREL16, but no overflow. */
900 1.1 christos HOWTO (R_PPC_DTPREL16_LO,
901 1.1 christos 0, /* rightshift */
902 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
903 1.1 christos 16, /* bitsize */
904 1.1 christos FALSE, /* pc_relative */
905 1.1 christos 0, /* bitpos */
906 1.1 christos complain_overflow_dont, /* complain_on_overflow */
907 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
908 1.1 christos "R_PPC_DTPREL16_LO", /* name */
909 1.1 christos FALSE, /* partial_inplace */
910 1.1 christos 0, /* src_mask */
911 1.1 christos 0xffff, /* dst_mask */
912 1.1 christos FALSE), /* pcrel_offset */
913 1.1 christos
914 1.1 christos /* Like DTPREL16_LO, but next higher group of 16 bits. */
915 1.1 christos HOWTO (R_PPC_DTPREL16_HI,
916 1.1 christos 16, /* rightshift */
917 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
918 1.1 christos 16, /* bitsize */
919 1.1 christos FALSE, /* pc_relative */
920 1.1 christos 0, /* bitpos */
921 1.1 christos complain_overflow_dont, /* complain_on_overflow */
922 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
923 1.1 christos "R_PPC_DTPREL16_HI", /* name */
924 1.1 christos FALSE, /* partial_inplace */
925 1.1 christos 0, /* src_mask */
926 1.1 christos 0xffff, /* dst_mask */
927 1.1 christos FALSE), /* pcrel_offset */
928 1.1 christos
929 1.1 christos /* Like DTPREL16_HI, but adjust for low 16 bits. */
930 1.1 christos HOWTO (R_PPC_DTPREL16_HA,
931 1.1 christos 16, /* rightshift */
932 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
933 1.1 christos 16, /* bitsize */
934 1.1 christos FALSE, /* pc_relative */
935 1.1 christos 0, /* bitpos */
936 1.1 christos complain_overflow_dont, /* complain_on_overflow */
937 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
938 1.1 christos "R_PPC_DTPREL16_HA", /* name */
939 1.1 christos FALSE, /* partial_inplace */
940 1.1 christos 0, /* src_mask */
941 1.1 christos 0xffff, /* dst_mask */
942 1.1 christos FALSE), /* pcrel_offset */
943 1.1 christos
944 1.1 christos /* Computes a tp-relative displacement, the difference between the value of
945 1.1 christos sym+add and the value of the thread pointer (r13). */
946 1.1 christos HOWTO (R_PPC_TPREL32,
947 1.1 christos 0, /* rightshift */
948 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
949 1.1 christos 32, /* bitsize */
950 1.1 christos FALSE, /* pc_relative */
951 1.1 christos 0, /* bitpos */
952 1.1 christos complain_overflow_dont, /* complain_on_overflow */
953 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
954 1.1 christos "R_PPC_TPREL32", /* name */
955 1.1 christos FALSE, /* partial_inplace */
956 1.1 christos 0, /* src_mask */
957 1.1 christos 0xffffffff, /* dst_mask */
958 1.1 christos FALSE), /* pcrel_offset */
959 1.1 christos
960 1.1 christos /* A 16 bit tprel reloc. */
961 1.1 christos HOWTO (R_PPC_TPREL16,
962 1.1 christos 0, /* rightshift */
963 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
964 1.1 christos 16, /* bitsize */
965 1.1 christos FALSE, /* pc_relative */
966 1.1 christos 0, /* bitpos */
967 1.1 christos complain_overflow_signed, /* complain_on_overflow */
968 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
969 1.1 christos "R_PPC_TPREL16", /* name */
970 1.1 christos FALSE, /* partial_inplace */
971 1.1 christos 0, /* src_mask */
972 1.1 christos 0xffff, /* dst_mask */
973 1.1 christos FALSE), /* pcrel_offset */
974 1.1 christos
975 1.1 christos /* Like TPREL16, but no overflow. */
976 1.1 christos HOWTO (R_PPC_TPREL16_LO,
977 1.1 christos 0, /* rightshift */
978 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
979 1.1 christos 16, /* bitsize */
980 1.1 christos FALSE, /* pc_relative */
981 1.1 christos 0, /* bitpos */
982 1.1 christos complain_overflow_dont, /* complain_on_overflow */
983 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
984 1.1 christos "R_PPC_TPREL16_LO", /* name */
985 1.1 christos FALSE, /* partial_inplace */
986 1.1 christos 0, /* src_mask */
987 1.1 christos 0xffff, /* dst_mask */
988 1.1 christos FALSE), /* pcrel_offset */
989 1.1 christos
990 1.1 christos /* Like TPREL16_LO, but next higher group of 16 bits. */
991 1.1 christos HOWTO (R_PPC_TPREL16_HI,
992 1.1 christos 16, /* rightshift */
993 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
994 1.1 christos 16, /* bitsize */
995 1.1 christos FALSE, /* pc_relative */
996 1.1 christos 0, /* bitpos */
997 1.1 christos complain_overflow_dont, /* complain_on_overflow */
998 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
999 1.1 christos "R_PPC_TPREL16_HI", /* name */
1000 1.1 christos FALSE, /* partial_inplace */
1001 1.1 christos 0, /* src_mask */
1002 1.1 christos 0xffff, /* dst_mask */
1003 1.1 christos FALSE), /* pcrel_offset */
1004 1.1 christos
1005 1.1 christos /* Like TPREL16_HI, but adjust for low 16 bits. */
1006 1.1 christos HOWTO (R_PPC_TPREL16_HA,
1007 1.1 christos 16, /* rightshift */
1008 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1009 1.1 christos 16, /* bitsize */
1010 1.1 christos FALSE, /* pc_relative */
1011 1.1 christos 0, /* bitpos */
1012 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1013 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1014 1.1 christos "R_PPC_TPREL16_HA", /* name */
1015 1.1 christos FALSE, /* partial_inplace */
1016 1.1 christos 0, /* src_mask */
1017 1.1 christos 0xffff, /* dst_mask */
1018 1.1 christos FALSE), /* pcrel_offset */
1019 1.1 christos
1020 1.1 christos /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1021 1.1 christos with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1022 1.1 christos to the first entry. */
1023 1.1 christos HOWTO (R_PPC_GOT_TLSGD16,
1024 1.1 christos 0, /* rightshift */
1025 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1026 1.1 christos 16, /* bitsize */
1027 1.1 christos FALSE, /* pc_relative */
1028 1.1 christos 0, /* bitpos */
1029 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1030 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1031 1.1 christos "R_PPC_GOT_TLSGD16", /* name */
1032 1.1 christos FALSE, /* partial_inplace */
1033 1.1 christos 0, /* src_mask */
1034 1.1 christos 0xffff, /* dst_mask */
1035 1.1 christos FALSE), /* pcrel_offset */
1036 1.1 christos
1037 1.1 christos /* Like GOT_TLSGD16, but no overflow. */
1038 1.1 christos HOWTO (R_PPC_GOT_TLSGD16_LO,
1039 1.1 christos 0, /* rightshift */
1040 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1041 1.1 christos 16, /* bitsize */
1042 1.1 christos FALSE, /* pc_relative */
1043 1.1 christos 0, /* bitpos */
1044 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1045 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1046 1.1 christos "R_PPC_GOT_TLSGD16_LO", /* name */
1047 1.1 christos FALSE, /* partial_inplace */
1048 1.1 christos 0, /* src_mask */
1049 1.1 christos 0xffff, /* dst_mask */
1050 1.1 christos FALSE), /* pcrel_offset */
1051 1.1 christos
1052 1.1 christos /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1053 1.1 christos HOWTO (R_PPC_GOT_TLSGD16_HI,
1054 1.1 christos 16, /* rightshift */
1055 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1056 1.1 christos 16, /* bitsize */
1057 1.1 christos FALSE, /* pc_relative */
1058 1.1 christos 0, /* bitpos */
1059 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1060 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1061 1.1 christos "R_PPC_GOT_TLSGD16_HI", /* name */
1062 1.1 christos FALSE, /* partial_inplace */
1063 1.1 christos 0, /* src_mask */
1064 1.1 christos 0xffff, /* dst_mask */
1065 1.1 christos FALSE), /* pcrel_offset */
1066 1.1 christos
1067 1.1 christos /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1068 1.1 christos HOWTO (R_PPC_GOT_TLSGD16_HA,
1069 1.1 christos 16, /* rightshift */
1070 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1071 1.1 christos 16, /* bitsize */
1072 1.1 christos FALSE, /* pc_relative */
1073 1.1 christos 0, /* bitpos */
1074 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1075 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1076 1.1 christos "R_PPC_GOT_TLSGD16_HA", /* name */
1077 1.1 christos FALSE, /* partial_inplace */
1078 1.1 christos 0, /* src_mask */
1079 1.1 christos 0xffff, /* dst_mask */
1080 1.1 christos FALSE), /* pcrel_offset */
1081 1.1 christos
1082 1.1 christos /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1083 1.1 christos with values (sym+add)@dtpmod and zero, and computes the offset to the
1084 1.1 christos first entry. */
1085 1.1 christos HOWTO (R_PPC_GOT_TLSLD16,
1086 1.1 christos 0, /* rightshift */
1087 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1088 1.1 christos 16, /* bitsize */
1089 1.1 christos FALSE, /* pc_relative */
1090 1.1 christos 0, /* bitpos */
1091 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1092 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1093 1.1 christos "R_PPC_GOT_TLSLD16", /* name */
1094 1.1 christos FALSE, /* partial_inplace */
1095 1.1 christos 0, /* src_mask */
1096 1.1 christos 0xffff, /* dst_mask */
1097 1.1 christos FALSE), /* pcrel_offset */
1098 1.1 christos
1099 1.1 christos /* Like GOT_TLSLD16, but no overflow. */
1100 1.1 christos HOWTO (R_PPC_GOT_TLSLD16_LO,
1101 1.1 christos 0, /* rightshift */
1102 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1103 1.1 christos 16, /* bitsize */
1104 1.1 christos FALSE, /* pc_relative */
1105 1.1 christos 0, /* bitpos */
1106 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1107 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1108 1.1 christos "R_PPC_GOT_TLSLD16_LO", /* name */
1109 1.1 christos FALSE, /* partial_inplace */
1110 1.1 christos 0, /* src_mask */
1111 1.1 christos 0xffff, /* dst_mask */
1112 1.1 christos FALSE), /* pcrel_offset */
1113 1.1 christos
1114 1.1 christos /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1115 1.1 christos HOWTO (R_PPC_GOT_TLSLD16_HI,
1116 1.1 christos 16, /* rightshift */
1117 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1118 1.1 christos 16, /* bitsize */
1119 1.1 christos FALSE, /* pc_relative */
1120 1.1 christos 0, /* bitpos */
1121 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1122 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1123 1.1 christos "R_PPC_GOT_TLSLD16_HI", /* name */
1124 1.1 christos FALSE, /* partial_inplace */
1125 1.1 christos 0, /* src_mask */
1126 1.1 christos 0xffff, /* dst_mask */
1127 1.1 christos FALSE), /* pcrel_offset */
1128 1.1 christos
1129 1.1 christos /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1130 1.1 christos HOWTO (R_PPC_GOT_TLSLD16_HA,
1131 1.1 christos 16, /* rightshift */
1132 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1133 1.1 christos 16, /* bitsize */
1134 1.1 christos FALSE, /* pc_relative */
1135 1.1 christos 0, /* bitpos */
1136 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1137 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1138 1.1 christos "R_PPC_GOT_TLSLD16_HA", /* name */
1139 1.1 christos FALSE, /* partial_inplace */
1140 1.1 christos 0, /* src_mask */
1141 1.1 christos 0xffff, /* dst_mask */
1142 1.1 christos FALSE), /* pcrel_offset */
1143 1.1 christos
1144 1.1 christos /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1145 1.1 christos the offset to the entry. */
1146 1.1 christos HOWTO (R_PPC_GOT_DTPREL16,
1147 1.1 christos 0, /* rightshift */
1148 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1149 1.1 christos 16, /* bitsize */
1150 1.1 christos FALSE, /* pc_relative */
1151 1.1 christos 0, /* bitpos */
1152 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1153 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1154 1.1 christos "R_PPC_GOT_DTPREL16", /* name */
1155 1.1 christos FALSE, /* partial_inplace */
1156 1.1 christos 0, /* src_mask */
1157 1.1 christos 0xffff, /* dst_mask */
1158 1.1 christos FALSE), /* pcrel_offset */
1159 1.1 christos
1160 1.1 christos /* Like GOT_DTPREL16, but no overflow. */
1161 1.1 christos HOWTO (R_PPC_GOT_DTPREL16_LO,
1162 1.1 christos 0, /* rightshift */
1163 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1164 1.1 christos 16, /* bitsize */
1165 1.1 christos FALSE, /* pc_relative */
1166 1.1 christos 0, /* bitpos */
1167 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1168 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1169 1.1 christos "R_PPC_GOT_DTPREL16_LO", /* name */
1170 1.1 christos FALSE, /* partial_inplace */
1171 1.1 christos 0, /* src_mask */
1172 1.1 christos 0xffff, /* dst_mask */
1173 1.1 christos FALSE), /* pcrel_offset */
1174 1.1 christos
1175 1.1 christos /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1176 1.1 christos HOWTO (R_PPC_GOT_DTPREL16_HI,
1177 1.1 christos 16, /* rightshift */
1178 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1179 1.1 christos 16, /* bitsize */
1180 1.1 christos FALSE, /* pc_relative */
1181 1.1 christos 0, /* bitpos */
1182 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1183 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1184 1.1 christos "R_PPC_GOT_DTPREL16_HI", /* name */
1185 1.1 christos FALSE, /* partial_inplace */
1186 1.1 christos 0, /* src_mask */
1187 1.1 christos 0xffff, /* dst_mask */
1188 1.1 christos FALSE), /* pcrel_offset */
1189 1.1 christos
1190 1.1 christos /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1191 1.1 christos HOWTO (R_PPC_GOT_DTPREL16_HA,
1192 1.1 christos 16, /* rightshift */
1193 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1194 1.1 christos 16, /* bitsize */
1195 1.1 christos FALSE, /* pc_relative */
1196 1.1 christos 0, /* bitpos */
1197 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1198 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1199 1.1 christos "R_PPC_GOT_DTPREL16_HA", /* name */
1200 1.1 christos FALSE, /* partial_inplace */
1201 1.1 christos 0, /* src_mask */
1202 1.1 christos 0xffff, /* dst_mask */
1203 1.1 christos FALSE), /* pcrel_offset */
1204 1.1 christos
1205 1.1 christos /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1206 1.1 christos offset to the entry. */
1207 1.1 christos HOWTO (R_PPC_GOT_TPREL16,
1208 1.1 christos 0, /* rightshift */
1209 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1210 1.1 christos 16, /* bitsize */
1211 1.1 christos FALSE, /* pc_relative */
1212 1.1 christos 0, /* bitpos */
1213 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1214 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1215 1.1 christos "R_PPC_GOT_TPREL16", /* name */
1216 1.1 christos FALSE, /* partial_inplace */
1217 1.1 christos 0, /* src_mask */
1218 1.1 christos 0xffff, /* dst_mask */
1219 1.1 christos FALSE), /* pcrel_offset */
1220 1.1 christos
1221 1.1 christos /* Like GOT_TPREL16, but no overflow. */
1222 1.1 christos HOWTO (R_PPC_GOT_TPREL16_LO,
1223 1.1 christos 0, /* rightshift */
1224 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1225 1.1 christos 16, /* bitsize */
1226 1.1 christos FALSE, /* pc_relative */
1227 1.1 christos 0, /* bitpos */
1228 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1229 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1230 1.1 christos "R_PPC_GOT_TPREL16_LO", /* name */
1231 1.1 christos FALSE, /* partial_inplace */
1232 1.1 christos 0, /* src_mask */
1233 1.1 christos 0xffff, /* dst_mask */
1234 1.1 christos FALSE), /* pcrel_offset */
1235 1.1 christos
1236 1.1 christos /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1237 1.1 christos HOWTO (R_PPC_GOT_TPREL16_HI,
1238 1.1 christos 16, /* rightshift */
1239 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1240 1.1 christos 16, /* bitsize */
1241 1.1 christos FALSE, /* pc_relative */
1242 1.1 christos 0, /* bitpos */
1243 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1244 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1245 1.1 christos "R_PPC_GOT_TPREL16_HI", /* name */
1246 1.1 christos FALSE, /* partial_inplace */
1247 1.1 christos 0, /* src_mask */
1248 1.1 christos 0xffff, /* dst_mask */
1249 1.1 christos FALSE), /* pcrel_offset */
1250 1.1 christos
1251 1.1 christos /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1252 1.1 christos HOWTO (R_PPC_GOT_TPREL16_HA,
1253 1.1 christos 16, /* rightshift */
1254 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1255 1.1 christos 16, /* bitsize */
1256 1.1 christos FALSE, /* pc_relative */
1257 1.1 christos 0, /* bitpos */
1258 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1259 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1260 1.1 christos "R_PPC_GOT_TPREL16_HA", /* name */
1261 1.1 christos FALSE, /* partial_inplace */
1262 1.1 christos 0, /* src_mask */
1263 1.1 christos 0xffff, /* dst_mask */
1264 1.1 christos FALSE), /* pcrel_offset */
1265 1.1 christos
1266 1.1 christos /* The remaining relocs are from the Embedded ELF ABI, and are not
1267 1.1 christos in the SVR4 ELF ABI. */
1268 1.1 christos
1269 1.1 christos /* 32 bit value resulting from the addend minus the symbol. */
1270 1.1 christos HOWTO (R_PPC_EMB_NADDR32, /* type */
1271 1.1 christos 0, /* rightshift */
1272 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1273 1.1 christos 32, /* bitsize */
1274 1.1 christos FALSE, /* pc_relative */
1275 1.3 christos 0, /* bitpos */
1276 1.7 christos complain_overflow_dont, /* complain_on_overflow */
1277 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1278 1.1 christos "R_PPC_EMB_NADDR32", /* name */
1279 1.1 christos FALSE, /* partial_inplace */
1280 1.1 christos 0, /* src_mask */
1281 1.1 christos 0xffffffff, /* dst_mask */
1282 1.1 christos FALSE), /* pcrel_offset */
1283 1.1 christos
1284 1.1 christos /* 16 bit value resulting from the addend minus the symbol. */
1285 1.1 christos HOWTO (R_PPC_EMB_NADDR16, /* type */
1286 1.1 christos 0, /* rightshift */
1287 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1288 1.1 christos 16, /* bitsize */
1289 1.1 christos FALSE, /* pc_relative */
1290 1.3 christos 0, /* bitpos */
1291 1.7 christos complain_overflow_signed, /* complain_on_overflow */
1292 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1293 1.1 christos "R_PPC_EMB_NADDR16", /* name */
1294 1.1 christos FALSE, /* partial_inplace */
1295 1.1 christos 0, /* src_mask */
1296 1.1 christos 0xffff, /* dst_mask */
1297 1.1 christos FALSE), /* pcrel_offset */
1298 1.1 christos
1299 1.1 christos /* 16 bit value resulting from the addend minus the symbol. */
1300 1.1 christos HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1301 1.1 christos 0, /* rightshift */
1302 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1303 1.1 christos 16, /* bitsize */
1304 1.1 christos FALSE, /* pc_relative */
1305 1.1 christos 0, /* bitpos */
1306 1.7 christos complain_overflow_dont,/* complain_on_overflow */
1307 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1308 1.1 christos "R_PPC_EMB_ADDR16_LO", /* name */
1309 1.1 christos FALSE, /* partial_inplace */
1310 1.1 christos 0, /* src_mask */
1311 1.1 christos 0xffff, /* dst_mask */
1312 1.1 christos FALSE), /* pcrel_offset */
1313 1.1 christos
1314 1.1 christos /* The high order 16 bits of the addend minus the symbol. */
1315 1.1 christos HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1316 1.1 christos 16, /* rightshift */
1317 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1318 1.1 christos 16, /* bitsize */
1319 1.1 christos FALSE, /* pc_relative */
1320 1.1 christos 0, /* bitpos */
1321 1.7 christos complain_overflow_dont, /* complain_on_overflow */
1322 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1323 1.1 christos "R_PPC_EMB_NADDR16_HI", /* name */
1324 1.1 christos FALSE, /* partial_inplace */
1325 1.1 christos 0, /* src_mask */
1326 1.1 christos 0xffff, /* dst_mask */
1327 1.1 christos FALSE), /* pcrel_offset */
1328 1.1 christos
1329 1.1 christos /* The high order 16 bits of the result of the addend minus the address,
1330 1.1 christos plus 1 if the contents of the low 16 bits, treated as a signed number,
1331 1.1 christos is negative. */
1332 1.1 christos HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1333 1.1 christos 16, /* rightshift */
1334 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1335 1.1 christos 16, /* bitsize */
1336 1.1 christos FALSE, /* pc_relative */
1337 1.1 christos 0, /* bitpos */
1338 1.7 christos complain_overflow_dont, /* complain_on_overflow */
1339 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1340 1.1 christos "R_PPC_EMB_NADDR16_HA", /* name */
1341 1.1 christos FALSE, /* partial_inplace */
1342 1.1 christos 0, /* src_mask */
1343 1.1 christos 0xffff, /* dst_mask */
1344 1.1 christos FALSE), /* pcrel_offset */
1345 1.1 christos
1346 1.1 christos /* 16 bit value resulting from allocating a 4 byte word to hold an
1347 1.1 christos address in the .sdata section, and returning the offset from
1348 1.1 christos _SDA_BASE_ for that relocation. */
1349 1.1 christos HOWTO (R_PPC_EMB_SDAI16, /* type */
1350 1.1 christos 0, /* rightshift */
1351 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1352 1.1 christos 16, /* bitsize */
1353 1.1 christos FALSE, /* pc_relative */
1354 1.1 christos 0, /* bitpos */
1355 1.7 christos complain_overflow_signed, /* complain_on_overflow */
1356 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1357 1.1 christos "R_PPC_EMB_SDAI16", /* name */
1358 1.1 christos FALSE, /* partial_inplace */
1359 1.1 christos 0, /* src_mask */
1360 1.1 christos 0xffff, /* dst_mask */
1361 1.1 christos FALSE), /* pcrel_offset */
1362 1.1 christos
1363 1.1 christos /* 16 bit value resulting from allocating a 4 byte word to hold an
1364 1.1 christos address in the .sdata2 section, and returning the offset from
1365 1.1 christos _SDA2_BASE_ for that relocation. */
1366 1.1 christos HOWTO (R_PPC_EMB_SDA2I16, /* type */
1367 1.1 christos 0, /* rightshift */
1368 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1369 1.1 christos 16, /* bitsize */
1370 1.1 christos FALSE, /* pc_relative */
1371 1.1 christos 0, /* bitpos */
1372 1.7 christos complain_overflow_signed, /* complain_on_overflow */
1373 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1374 1.1 christos "R_PPC_EMB_SDA2I16", /* name */
1375 1.1 christos FALSE, /* partial_inplace */
1376 1.1 christos 0, /* src_mask */
1377 1.1 christos 0xffff, /* dst_mask */
1378 1.1 christos FALSE), /* pcrel_offset */
1379 1.1 christos
1380 1.1 christos /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1381 1.1 christos small data items. */
1382 1.1 christos HOWTO (R_PPC_EMB_SDA2REL, /* type */
1383 1.1 christos 0, /* rightshift */
1384 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1385 1.1 christos 16, /* bitsize */
1386 1.1 christos FALSE, /* pc_relative */
1387 1.1 christos 0, /* bitpos */
1388 1.7 christos complain_overflow_signed, /* complain_on_overflow */
1389 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1390 1.1 christos "R_PPC_EMB_SDA2REL", /* name */
1391 1.1 christos FALSE, /* partial_inplace */
1392 1.1 christos 0, /* src_mask */
1393 1.1 christos 0xffff, /* dst_mask */
1394 1.1 christos FALSE), /* pcrel_offset */
1395 1.1 christos
1396 1.1 christos /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1397 1.1 christos signed offset from the appropriate base, and filling in the register
1398 1.1 christos field with the appropriate register (0, 2, or 13). */
1399 1.1 christos HOWTO (R_PPC_EMB_SDA21, /* type */
1400 1.1 christos 0, /* rightshift */
1401 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1402 1.1 christos 16, /* bitsize */
1403 1.1 christos FALSE, /* pc_relative */
1404 1.1 christos 0, /* bitpos */
1405 1.7 christos complain_overflow_signed, /* complain_on_overflow */
1406 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1407 1.1 christos "R_PPC_EMB_SDA21", /* name */
1408 1.1 christos FALSE, /* partial_inplace */
1409 1.1 christos 0, /* src_mask */
1410 1.1 christos 0xffff, /* dst_mask */
1411 1.1 christos FALSE), /* pcrel_offset */
1412 1.1 christos
1413 1.1 christos /* Relocation not handled: R_PPC_EMB_MRKREF */
1414 1.1 christos /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1415 1.1 christos /* Relocation not handled: R_PPC_EMB_RELST_LO */
1416 1.1 christos /* Relocation not handled: R_PPC_EMB_RELST_HI */
1417 1.1 christos /* Relocation not handled: R_PPC_EMB_RELST_HA */
1418 1.1 christos /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1419 1.1 christos
1420 1.1 christos /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1421 1.1 christos in the 16 bit signed offset from the appropriate base, and filling in the
1422 1.1 christos register field with the appropriate register (0, 2, or 13). */
1423 1.1 christos HOWTO (R_PPC_EMB_RELSDA, /* type */
1424 1.1 christos 0, /* rightshift */
1425 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1426 1.1 christos 16, /* bitsize */
1427 1.1 christos FALSE, /* pc_relative */
1428 1.1 christos 0, /* bitpos */
1429 1.7 christos complain_overflow_signed, /* complain_on_overflow */
1430 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1431 1.1 christos "R_PPC_EMB_RELSDA", /* name */
1432 1.1 christos FALSE, /* partial_inplace */
1433 1.1 christos 0, /* src_mask */
1434 1.1 christos 0xffff, /* dst_mask */
1435 1.1 christos FALSE), /* pcrel_offset */
1436 1.1 christos
1437 1.1 christos /* A relative 8 bit branch. */
1438 1.1 christos HOWTO (R_PPC_VLE_REL8, /* type */
1439 1.1 christos 1, /* rightshift */
1440 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1441 1.1 christos 8, /* bitsize */
1442 1.1 christos TRUE, /* pc_relative */
1443 1.1 christos 0, /* bitpos */
1444 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1445 1.1 christos bfd_elf_generic_reloc, /* special_function */
1446 1.1 christos "R_PPC_VLE_REL8", /* name */
1447 1.1 christos FALSE, /* partial_inplace */
1448 1.1 christos 0, /* src_mask */
1449 1.1 christos 0xff, /* dst_mask */
1450 1.3 christos TRUE), /* pcrel_offset */
1451 1.1 christos
1452 1.1 christos /* A relative 15 bit branch. */
1453 1.1 christos HOWTO (R_PPC_VLE_REL15, /* type */
1454 1.1 christos 1, /* rightshift */
1455 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1456 1.1 christos 15, /* bitsize */
1457 1.1 christos TRUE, /* pc_relative */
1458 1.1 christos 1, /* bitpos */
1459 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1460 1.1 christos bfd_elf_generic_reloc, /* special_function */
1461 1.1 christos "R_PPC_VLE_REL15", /* name */
1462 1.1 christos FALSE, /* partial_inplace */
1463 1.7 christos 0, /* src_mask */
1464 1.1 christos 0xfffe, /* dst_mask */
1465 1.1 christos TRUE), /* pcrel_offset */
1466 1.3 christos
1467 1.1 christos /* A relative 24 bit branch. */
1468 1.1 christos HOWTO (R_PPC_VLE_REL24, /* type */
1469 1.1 christos 1, /* rightshift */
1470 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1471 1.1 christos 24, /* bitsize */
1472 1.1 christos TRUE, /* pc_relative */
1473 1.1 christos 1, /* bitpos */
1474 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1475 1.1 christos bfd_elf_generic_reloc, /* special_function */
1476 1.1 christos "R_PPC_VLE_REL24", /* name */
1477 1.1 christos FALSE, /* partial_inplace */
1478 1.1 christos 0, /* src_mask */
1479 1.1 christos 0x1fffffe, /* dst_mask */
1480 1.1 christos TRUE), /* pcrel_offset */
1481 1.1 christos
1482 1.1 christos /* The 16 LSBS in split16a format. */
1483 1.1 christos HOWTO (R_PPC_VLE_LO16A, /* type */
1484 1.1 christos 0, /* rightshift */
1485 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1486 1.1 christos 16, /* bitsize */
1487 1.1 christos FALSE, /* pc_relative */
1488 1.3 christos 0, /* bitpos */
1489 1.7 christos complain_overflow_dont, /* complain_on_overflow */
1490 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1491 1.1 christos "R_PPC_VLE_LO16A", /* name */
1492 1.1 christos FALSE, /* partial_inplace */
1493 1.7 christos 0, /* src_mask */
1494 1.1 christos 0x1f07ff, /* dst_mask */
1495 1.1 christos FALSE), /* pcrel_offset */
1496 1.1 christos
1497 1.1 christos /* The 16 LSBS in split16d format. */
1498 1.1 christos HOWTO (R_PPC_VLE_LO16D, /* type */
1499 1.1 christos 0, /* rightshift */
1500 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1501 1.1 christos 16, /* bitsize */
1502 1.1 christos FALSE, /* pc_relative */
1503 1.3 christos 0, /* bitpos */
1504 1.7 christos complain_overflow_dont, /* complain_on_overflow */
1505 1.7 christos ppc_elf_unhandled_reloc, /* special_function */
1506 1.1 christos "R_PPC_VLE_LO16D", /* name */
1507 1.1 christos FALSE, /* partial_inplace */
1508 1.7 christos 0, /* src_mask */
1509 1.1 christos 0x3e007ff, /* dst_mask */
1510 1.1 christos FALSE), /* pcrel_offset */
1511 1.1 christos
1512 1.1 christos /* Bits 16-31 split16a format. */
1513 1.3 christos HOWTO (R_PPC_VLE_HI16A, /* type */
1514 1.1 christos 16, /* rightshift */
1515 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1516 1.1 christos 16, /* bitsize */
1517 1.1 christos FALSE, /* pc_relative */
1518 1.3 christos 0, /* bitpos */
1519 1.7 christos complain_overflow_dont, /* complain_on_overflow */
1520 1.7 christos ppc_elf_unhandled_reloc, /* special_function */
1521 1.1 christos "R_PPC_VLE_HI16A", /* name */
1522 1.1 christos FALSE, /* partial_inplace */
1523 1.7 christos 0, /* src_mask */
1524 1.1 christos 0x1f07ff, /* dst_mask */
1525 1.1 christos FALSE), /* pcrel_offset */
1526 1.1 christos
1527 1.1 christos /* Bits 16-31 split16d format. */
1528 1.3 christos HOWTO (R_PPC_VLE_HI16D, /* type */
1529 1.1 christos 16, /* rightshift */
1530 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1531 1.1 christos 16, /* bitsize */
1532 1.1 christos FALSE, /* pc_relative */
1533 1.3 christos 0, /* bitpos */
1534 1.7 christos complain_overflow_dont, /* complain_on_overflow */
1535 1.7 christos ppc_elf_unhandled_reloc, /* special_function */
1536 1.1 christos "R_PPC_VLE_HI16D", /* name */
1537 1.1 christos FALSE, /* partial_inplace */
1538 1.7 christos 0, /* src_mask */
1539 1.1 christos 0x3e007ff, /* dst_mask */
1540 1.1 christos FALSE), /* pcrel_offset */
1541 1.1 christos
1542 1.1 christos /* Bits 16-31 (High Adjusted) in split16a format. */
1543 1.3 christos HOWTO (R_PPC_VLE_HA16A, /* type */
1544 1.1 christos 16, /* rightshift */
1545 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1546 1.1 christos 16, /* bitsize */
1547 1.1 christos FALSE, /* pc_relative */
1548 1.3 christos 0, /* bitpos */
1549 1.7 christos complain_overflow_dont, /* complain_on_overflow */
1550 1.7 christos ppc_elf_unhandled_reloc, /* special_function */
1551 1.1 christos "R_PPC_VLE_HA16A", /* name */
1552 1.1 christos FALSE, /* partial_inplace */
1553 1.7 christos 0, /* src_mask */
1554 1.1 christos 0x1f07ff, /* dst_mask */
1555 1.1 christos FALSE), /* pcrel_offset */
1556 1.1 christos
1557 1.1 christos /* Bits 16-31 (High Adjusted) in split16d format. */
1558 1.3 christos HOWTO (R_PPC_VLE_HA16D, /* type */
1559 1.1 christos 16, /* rightshift */
1560 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1561 1.1 christos 16, /* bitsize */
1562 1.1 christos FALSE, /* pc_relative */
1563 1.3 christos 0, /* bitpos */
1564 1.7 christos complain_overflow_dont, /* complain_on_overflow */
1565 1.7 christos ppc_elf_unhandled_reloc, /* special_function */
1566 1.1 christos "R_PPC_VLE_HA16D", /* name */
1567 1.1 christos FALSE, /* partial_inplace */
1568 1.7 christos 0, /* src_mask */
1569 1.1 christos 0x3e007ff, /* dst_mask */
1570 1.1 christos FALSE), /* pcrel_offset */
1571 1.3 christos
1572 1.3 christos /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
1573 1.3 christos instructions. If the register base is 0 then the linker changes
1574 1.3 christos the e_add16i to an e_li instruction. */
1575 1.1 christos HOWTO (R_PPC_VLE_SDA21, /* type */
1576 1.1 christos 0, /* rightshift */
1577 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1578 1.1 christos 16, /* bitsize */
1579 1.1 christos FALSE, /* pc_relative */
1580 1.3 christos 0, /* bitpos */
1581 1.7 christos complain_overflow_signed, /* complain_on_overflow */
1582 1.7 christos ppc_elf_unhandled_reloc, /* special_function */
1583 1.1 christos "R_PPC_VLE_SDA21", /* name */
1584 1.1 christos FALSE, /* partial_inplace */
1585 1.1 christos 0, /* src_mask */
1586 1.1 christos 0xffff, /* dst_mask */
1587 1.1 christos FALSE), /* pcrel_offset */
1588 1.3 christos
1589 1.1 christos /* Like R_PPC_VLE_SDA21 but ignore overflow. */
1590 1.1 christos HOWTO (R_PPC_VLE_SDA21_LO, /* type */
1591 1.1 christos 0, /* rightshift */
1592 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1593 1.1 christos 16, /* bitsize */
1594 1.1 christos FALSE, /* pc_relative */
1595 1.3 christos 0, /* bitpos */
1596 1.7 christos complain_overflow_dont, /* complain_on_overflow */
1597 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1598 1.1 christos "R_PPC_VLE_SDA21_LO", /* name */
1599 1.1 christos FALSE, /* partial_inplace */
1600 1.3 christos 0, /* src_mask */
1601 1.1 christos 0xffff, /* dst_mask */
1602 1.1 christos FALSE), /* pcrel_offset */
1603 1.1 christos
1604 1.1 christos /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1605 1.1 christos HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */
1606 1.1 christos 0, /* rightshift */
1607 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1608 1.1 christos 16, /* bitsize */
1609 1.1 christos FALSE, /* pc_relative */
1610 1.7 christos 0, /* bitpos */
1611 1.7 christos complain_overflow_dont, /* complain_on_overflow */
1612 1.7 christos ppc_elf_unhandled_reloc, /* special_function */
1613 1.1 christos "R_PPC_VLE_SDAREL_LO16A", /* name */
1614 1.1 christos FALSE, /* partial_inplace */
1615 1.7 christos 0, /* src_mask */
1616 1.1 christos 0x1f07ff, /* dst_mask */
1617 1.1 christos FALSE), /* pcrel_offset */
1618 1.1 christos
1619 1.1 christos /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
1620 1.1 christos HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */
1621 1.1 christos 0, /* rightshift */
1622 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1623 1.1 christos 16, /* bitsize */
1624 1.1 christos FALSE, /* pc_relative */
1625 1.7 christos 0, /* bitpos */
1626 1.7 christos complain_overflow_dont, /* complain_on_overflow */
1627 1.7 christos ppc_elf_unhandled_reloc, /* special_function */
1628 1.1 christos "R_PPC_VLE_SDAREL_LO16D", /* name */
1629 1.1 christos FALSE, /* partial_inplace */
1630 1.7 christos 0, /* src_mask */
1631 1.1 christos 0x3e007ff, /* dst_mask */
1632 1.1 christos FALSE), /* pcrel_offset */
1633 1.1 christos
1634 1.7 christos /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1635 1.3 christos HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */
1636 1.1 christos 16, /* rightshift */
1637 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1638 1.1 christos 16, /* bitsize */
1639 1.1 christos FALSE, /* pc_relative */
1640 1.7 christos 0, /* bitpos */
1641 1.7 christos complain_overflow_dont, /* complain_on_overflow */
1642 1.7 christos ppc_elf_unhandled_reloc, /* special_function */
1643 1.1 christos "R_PPC_VLE_SDAREL_HI16A", /* name */
1644 1.1 christos FALSE, /* partial_inplace */
1645 1.7 christos 0, /* src_mask */
1646 1.1 christos 0x1f07ff, /* dst_mask */
1647 1.1 christos FALSE), /* pcrel_offset */
1648 1.1 christos
1649 1.7 christos /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1650 1.3 christos HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */
1651 1.1 christos 16, /* rightshift */
1652 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1653 1.1 christos 16, /* bitsize */
1654 1.1 christos FALSE, /* pc_relative */
1655 1.7 christos 0, /* bitpos */
1656 1.7 christos complain_overflow_dont, /* complain_on_overflow */
1657 1.7 christos ppc_elf_unhandled_reloc, /* special_function */
1658 1.1 christos "R_PPC_VLE_SDAREL_HI16D", /* name */
1659 1.1 christos FALSE, /* partial_inplace */
1660 1.7 christos 0, /* src_mask */
1661 1.1 christos 0x3e007ff, /* dst_mask */
1662 1.1 christos FALSE), /* pcrel_offset */
1663 1.1 christos
1664 1.7 christos /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1665 1.3 christos HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */
1666 1.1 christos 16, /* rightshift */
1667 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1668 1.1 christos 16, /* bitsize */
1669 1.1 christos FALSE, /* pc_relative */
1670 1.7 christos 0, /* bitpos */
1671 1.7 christos complain_overflow_dont, /* complain_on_overflow */
1672 1.7 christos ppc_elf_unhandled_reloc, /* special_function */
1673 1.1 christos "R_PPC_VLE_SDAREL_HA16A", /* name */
1674 1.1 christos FALSE, /* partial_inplace */
1675 1.7 christos 0, /* src_mask */
1676 1.1 christos 0x1f07ff, /* dst_mask */
1677 1.1 christos FALSE), /* pcrel_offset */
1678 1.1 christos
1679 1.7 christos /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1680 1.3 christos HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */
1681 1.1 christos 16, /* rightshift */
1682 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1683 1.1 christos 16, /* bitsize */
1684 1.1 christos FALSE, /* pc_relative */
1685 1.7 christos 0, /* bitpos */
1686 1.7 christos complain_overflow_dont, /* complain_on_overflow */
1687 1.7 christos ppc_elf_unhandled_reloc, /* special_function */
1688 1.7 christos "R_PPC_VLE_SDAREL_HA16D", /* name */
1689 1.7 christos FALSE, /* partial_inplace */
1690 1.7 christos 0, /* src_mask */
1691 1.7 christos 0x3e007ff, /* dst_mask */
1692 1.7 christos FALSE), /* pcrel_offset */
1693 1.7 christos
1694 1.7 christos /* e_li split20 format. */
1695 1.7 christos HOWTO (R_PPC_VLE_ADDR20, /* type */
1696 1.7 christos 16, /* rightshift */
1697 1.7 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1698 1.7 christos 20, /* bitsize */
1699 1.7 christos FALSE, /* pc_relative */
1700 1.7 christos 0, /* bitpos */
1701 1.7 christos complain_overflow_dont, /* complain_on_overflow */
1702 1.7 christos bfd_elf_generic_reloc, /* special_function */
1703 1.1 christos "R_PPC_VLE_ADDR20", /* name */
1704 1.1 christos FALSE, /* partial_inplace */
1705 1.1 christos 0, /* src_mask */
1706 1.1 christos 0x1f07ff, /* dst_mask */
1707 1.1 christos FALSE), /* pcrel_offset */
1708 1.1 christos
1709 1.1 christos HOWTO (R_PPC_IRELATIVE, /* type */
1710 1.1 christos 0, /* rightshift */
1711 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1712 1.1 christos 32, /* bitsize */
1713 1.1 christos FALSE, /* pc_relative */
1714 1.3 christos 0, /* bitpos */
1715 1.7 christos complain_overflow_dont, /* complain_on_overflow */
1716 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1717 1.1 christos "R_PPC_IRELATIVE", /* name */
1718 1.1 christos FALSE, /* partial_inplace */
1719 1.1 christos 0, /* src_mask */
1720 1.1 christos 0xffffffff, /* dst_mask */
1721 1.1 christos FALSE), /* pcrel_offset */
1722 1.1 christos
1723 1.1 christos /* A 16 bit relative relocation. */
1724 1.1 christos HOWTO (R_PPC_REL16, /* type */
1725 1.1 christos 0, /* rightshift */
1726 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1727 1.1 christos 16, /* bitsize */
1728 1.1 christos TRUE, /* pc_relative */
1729 1.3 christos 0, /* bitpos */
1730 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1731 1.1 christos bfd_elf_generic_reloc, /* special_function */
1732 1.1 christos "R_PPC_REL16", /* name */
1733 1.1 christos FALSE, /* partial_inplace */
1734 1.1 christos 0, /* src_mask */
1735 1.1 christos 0xffff, /* dst_mask */
1736 1.1 christos TRUE), /* pcrel_offset */
1737 1.1 christos
1738 1.1 christos /* A 16 bit relative relocation without overflow. */
1739 1.1 christos HOWTO (R_PPC_REL16_LO, /* type */
1740 1.1 christos 0, /* rightshift */
1741 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1742 1.1 christos 16, /* bitsize */
1743 1.1 christos TRUE, /* pc_relative */
1744 1.1 christos 0, /* bitpos */
1745 1.1 christos complain_overflow_dont,/* complain_on_overflow */
1746 1.1 christos bfd_elf_generic_reloc, /* special_function */
1747 1.1 christos "R_PPC_REL16_LO", /* name */
1748 1.1 christos FALSE, /* partial_inplace */
1749 1.1 christos 0, /* src_mask */
1750 1.1 christos 0xffff, /* dst_mask */
1751 1.1 christos TRUE), /* pcrel_offset */
1752 1.1 christos
1753 1.1 christos /* The high order 16 bits of a relative address. */
1754 1.1 christos HOWTO (R_PPC_REL16_HI, /* type */
1755 1.1 christos 16, /* rightshift */
1756 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1757 1.1 christos 16, /* bitsize */
1758 1.1 christos TRUE, /* pc_relative */
1759 1.1 christos 0, /* bitpos */
1760 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1761 1.1 christos bfd_elf_generic_reloc, /* special_function */
1762 1.1 christos "R_PPC_REL16_HI", /* name */
1763 1.1 christos FALSE, /* partial_inplace */
1764 1.1 christos 0, /* src_mask */
1765 1.1 christos 0xffff, /* dst_mask */
1766 1.1 christos TRUE), /* pcrel_offset */
1767 1.1 christos
1768 1.1 christos /* The high order 16 bits of a relative address, plus 1 if the contents of
1769 1.1 christos the low 16 bits, treated as a signed number, is negative. */
1770 1.1 christos HOWTO (R_PPC_REL16_HA, /* type */
1771 1.1 christos 16, /* rightshift */
1772 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1773 1.1 christos 16, /* bitsize */
1774 1.1 christos TRUE, /* pc_relative */
1775 1.1 christos 0, /* bitpos */
1776 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1777 1.1 christos ppc_elf_addr16_ha_reloc, /* special_function */
1778 1.1 christos "R_PPC_REL16_HA", /* name */
1779 1.1 christos FALSE, /* partial_inplace */
1780 1.1 christos 0, /* src_mask */
1781 1.1 christos 0xffff, /* dst_mask */
1782 1.1 christos TRUE), /* pcrel_offset */
1783 1.3 christos
1784 1.3 christos /* Like R_PPC_REL16_HA but for split field in addpcis. */
1785 1.3 christos HOWTO (R_PPC_REL16DX_HA, /* type */
1786 1.3 christos 16, /* rightshift */
1787 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1788 1.3 christos 16, /* bitsize */
1789 1.3 christos TRUE, /* pc_relative */
1790 1.3 christos 0, /* bitpos */
1791 1.3 christos complain_overflow_signed, /* complain_on_overflow */
1792 1.3 christos ppc_elf_addr16_ha_reloc, /* special_function */
1793 1.3 christos "R_PPC_REL16DX_HA", /* name */
1794 1.3 christos FALSE, /* partial_inplace */
1795 1.3 christos 0, /* src_mask */
1796 1.3 christos 0x1fffc1, /* dst_mask */
1797 1.3 christos TRUE), /* pcrel_offset */
1798 1.7 christos
1799 1.7 christos /* A split-field reloc for addpcis, non-relative (gas internal use only). */
1800 1.7 christos HOWTO (R_PPC_16DX_HA, /* type */
1801 1.7 christos 16, /* rightshift */
1802 1.7 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1803 1.7 christos 16, /* bitsize */
1804 1.7 christos FALSE, /* pc_relative */
1805 1.7 christos 0, /* bitpos */
1806 1.7 christos complain_overflow_signed, /* complain_on_overflow */
1807 1.7 christos ppc_elf_addr16_ha_reloc, /* special_function */
1808 1.7 christos "R_PPC_16DX_HA", /* name */
1809 1.7 christos FALSE, /* partial_inplace */
1810 1.7 christos 0, /* src_mask */
1811 1.7 christos 0x1fffc1, /* dst_mask */
1812 1.7 christos FALSE), /* pcrel_offset */
1813 1.1 christos
1814 1.1 christos /* GNU extension to record C++ vtable hierarchy. */
1815 1.1 christos HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1816 1.1 christos 0, /* rightshift */
1817 1.1 christos 0, /* size (0 = byte, 1 = short, 2 = long) */
1818 1.1 christos 0, /* bitsize */
1819 1.1 christos FALSE, /* pc_relative */
1820 1.1 christos 0, /* bitpos */
1821 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1822 1.1 christos NULL, /* special_function */
1823 1.1 christos "R_PPC_GNU_VTINHERIT", /* name */
1824 1.1 christos FALSE, /* partial_inplace */
1825 1.1 christos 0, /* src_mask */
1826 1.1 christos 0, /* dst_mask */
1827 1.1 christos FALSE), /* pcrel_offset */
1828 1.1 christos
1829 1.1 christos /* GNU extension to record C++ vtable member usage. */
1830 1.1 christos HOWTO (R_PPC_GNU_VTENTRY, /* type */
1831 1.1 christos 0, /* rightshift */
1832 1.1 christos 0, /* size (0 = byte, 1 = short, 2 = long) */
1833 1.1 christos 0, /* bitsize */
1834 1.1 christos FALSE, /* pc_relative */
1835 1.1 christos 0, /* bitpos */
1836 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1837 1.1 christos NULL, /* special_function */
1838 1.1 christos "R_PPC_GNU_VTENTRY", /* name */
1839 1.1 christos FALSE, /* partial_inplace */
1840 1.1 christos 0, /* src_mask */
1841 1.1 christos 0, /* dst_mask */
1842 1.1 christos FALSE), /* pcrel_offset */
1843 1.1 christos
1844 1.1 christos /* Phony reloc to handle AIX style TOC entries. */
1845 1.1 christos HOWTO (R_PPC_TOC16, /* type */
1846 1.1 christos 0, /* rightshift */
1847 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1848 1.1 christos 16, /* bitsize */
1849 1.1 christos FALSE, /* pc_relative */
1850 1.1 christos 0, /* bitpos */
1851 1.7 christos complain_overflow_signed, /* complain_on_overflow */
1852 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1853 1.1 christos "R_PPC_TOC16", /* name */
1854 1.1 christos FALSE, /* partial_inplace */
1855 1.1 christos 0, /* src_mask */
1856 1.1 christos 0xffff, /* dst_mask */
1857 1.1 christos FALSE), /* pcrel_offset */
1858 1.1 christos };
1859 1.1 christos
1860 1.1 christos /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1862 1.1 christos
1863 1.1 christos static void
1864 1.1 christos ppc_elf_howto_init (void)
1865 1.1 christos {
1866 1.1 christos unsigned int i, type;
1867 1.1 christos
1868 1.1 christos for (i = 0;
1869 1.1 christos i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1870 1.1 christos i++)
1871 1.1 christos {
1872 1.1 christos type = ppc_elf_howto_raw[i].type;
1873 1.1 christos if (type >= (sizeof (ppc_elf_howto_table)
1874 1.1 christos / sizeof (ppc_elf_howto_table[0])))
1875 1.1 christos abort ();
1876 1.1 christos ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1877 1.1 christos }
1878 1.1 christos }
1879 1.1 christos
1880 1.1 christos static reloc_howto_type *
1881 1.1 christos ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1882 1.1 christos bfd_reloc_code_real_type code)
1883 1.1 christos {
1884 1.1 christos enum elf_ppc_reloc_type r;
1885 1.1 christos
1886 1.1 christos /* Initialize howto table if not already done. */
1887 1.1 christos if (!ppc_elf_howto_table[R_PPC_ADDR32])
1888 1.1 christos ppc_elf_howto_init ();
1889 1.1 christos
1890 1.1 christos switch (code)
1891 1.1 christos {
1892 1.1 christos default:
1893 1.1 christos return NULL;
1894 1.1 christos
1895 1.1 christos case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1896 1.1 christos case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1897 1.1 christos case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1898 1.1 christos case BFD_RELOC_PPC64_ADDR16_DS:
1899 1.1 christos case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1900 1.1 christos case BFD_RELOC_PPC64_ADDR16_LO_DS:
1901 1.1 christos case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1902 1.1 christos case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1903 1.1 christos case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1904 1.1 christos case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1905 1.1 christos case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1906 1.1 christos case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1907 1.1 christos case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1908 1.1 christos case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1909 1.1 christos case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1910 1.1 christos case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1911 1.1 christos case BFD_RELOC_PPC64_GOT16_DS:
1912 1.1 christos case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1913 1.1 christos case BFD_RELOC_PPC64_GOT16_LO_DS:
1914 1.1 christos case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1915 1.1 christos case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1916 1.1 christos case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1917 1.1 christos case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1918 1.1 christos case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1919 1.1 christos case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1920 1.1 christos case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1921 1.1 christos case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1922 1.1 christos case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1923 1.1 christos case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1924 1.1 christos case BFD_RELOC_PPC64_PLT16_LO_DS:
1925 1.1 christos case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1926 1.1 christos case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1927 1.1 christos case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1928 1.1 christos case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1929 1.1 christos case BFD_RELOC_PPC64_SECTOFF_DS:
1930 1.1 christos case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1931 1.1 christos case BFD_RELOC_PPC64_SECTOFF_LO_DS:
1932 1.1 christos case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1933 1.1 christos case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1934 1.1 christos case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1935 1.1 christos case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1936 1.1 christos case BFD_RELOC_PPC64_TOC16_DS:
1937 1.1 christos case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1938 1.1 christos case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1939 1.1 christos case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1940 1.1 christos case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1941 1.1 christos case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1942 1.1 christos case BFD_RELOC_PPC64_TPREL16_DS:
1943 1.1 christos case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1944 1.1 christos case BFD_RELOC_PPC64_TPREL16_LO_DS:
1945 1.1 christos case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1946 1.1 christos case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1947 1.1 christos case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1948 1.1 christos case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1949 1.1 christos case BFD_RELOC_PPC64_DTPREL16_DS:
1950 1.1 christos case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1951 1.1 christos case BFD_RELOC_PPC64_DTPREL16_LO_DS:
1952 1.1 christos case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1953 1.1 christos case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1954 1.1 christos case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1955 1.1 christos case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1956 1.1 christos case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1957 1.1 christos case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1958 1.1 christos case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1959 1.1 christos case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1960 1.1 christos case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1961 1.1 christos case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1962 1.1 christos case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1963 1.1 christos case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1964 1.1 christos case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1965 1.1 christos case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1966 1.1 christos case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1967 1.1 christos case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1968 1.1 christos case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1969 1.1 christos case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1970 1.1 christos case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1971 1.1 christos case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1972 1.1 christos case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1973 1.1 christos case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1974 1.1 christos case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1975 1.1 christos case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1976 1.1 christos case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1977 1.1 christos case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1978 1.1 christos case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1979 1.1 christos case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1980 1.1 christos case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1981 1.1 christos case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1982 1.1 christos case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1983 1.1 christos case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1984 1.1 christos case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1985 1.1 christos case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1986 1.1 christos case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1987 1.1 christos case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1988 1.1 christos case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1989 1.1 christos case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1990 1.1 christos case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1991 1.1 christos case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1992 1.1 christos case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1993 1.1 christos case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1994 1.1 christos case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1995 1.1 christos case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1996 1.1 christos case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1997 1.1 christos case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1998 1.1 christos case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1999 1.1 christos case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
2000 1.1 christos r = R_PPC_VLE_SDAREL_LO16A;
2001 1.1 christos break;
2002 1.1 christos case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
2003 1.1 christos r = R_PPC_VLE_SDAREL_LO16D;
2004 1.1 christos break;
2005 1.1 christos case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
2006 1.1 christos r = R_PPC_VLE_SDAREL_HI16A;
2007 1.1 christos break;
2008 1.1 christos case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
2009 1.1 christos r = R_PPC_VLE_SDAREL_HI16D;
2010 1.1 christos break;
2011 1.1 christos case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
2012 1.1 christos r = R_PPC_VLE_SDAREL_HA16A;
2013 1.1 christos break;
2014 1.1 christos case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
2015 1.1 christos r = R_PPC_VLE_SDAREL_HA16D;
2016 1.1 christos break;
2017 1.1 christos case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
2018 1.1 christos case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
2019 1.7 christos case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
2020 1.3 christos case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
2021 1.1 christos case BFD_RELOC_PPC_16DX_HA: r = R_PPC_16DX_HA; break;
2022 1.1 christos case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC_REL16DX_HA; break;
2023 1.1 christos case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
2024 1.1 christos case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
2025 1.1 christos }
2026 1.1 christos
2027 1.1 christos return ppc_elf_howto_table[r];
2028 1.1 christos };
2029 1.1 christos
2030 1.1 christos static reloc_howto_type *
2031 1.1 christos ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2032 1.1 christos const char *r_name)
2033 1.1 christos {
2034 1.1 christos unsigned int i;
2035 1.1 christos
2036 1.1 christos for (i = 0;
2037 1.1 christos i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2038 1.1 christos i++)
2039 1.1 christos if (ppc_elf_howto_raw[i].name != NULL
2040 1.1 christos && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2041 1.1 christos return &ppc_elf_howto_raw[i];
2042 1.1 christos
2043 1.1 christos return NULL;
2044 1.1 christos }
2045 1.1 christos
2046 1.7 christos /* Set the howto pointer for a PowerPC ELF reloc. */
2047 1.7 christos
2048 1.1 christos static bfd_boolean
2049 1.1 christos ppc_elf_info_to_howto (bfd *abfd,
2050 1.1 christos arelent *cache_ptr,
2051 1.3 christos Elf_Internal_Rela *dst)
2052 1.3 christos {
2053 1.1 christos unsigned int r_type;
2054 1.1 christos
2055 1.1 christos /* Initialize howto table if not already done. */
2056 1.1 christos if (!ppc_elf_howto_table[R_PPC_ADDR32])
2057 1.3 christos ppc_elf_howto_init ();
2058 1.3 christos
2059 1.3 christos r_type = ELF32_R_TYPE (dst->r_info);
2060 1.7 christos if (r_type >= R_PPC_max)
2061 1.7 christos {
2062 1.7 christos /* xgettext:c-format */
2063 1.3 christos _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
2064 1.7 christos abfd, r_type);
2065 1.3 christos bfd_set_error (bfd_error_bad_value);
2066 1.7 christos return FALSE;
2067 1.3 christos }
2068 1.1 christos
2069 1.1 christos cache_ptr->howto = ppc_elf_howto_table[r_type];
2070 1.1 christos
2071 1.7 christos /* Just because the above assert didn't trigger doesn't mean that
2072 1.1 christos ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2073 1.7 christos if (cache_ptr->howto == NULL)
2074 1.7 christos {
2075 1.7 christos /* xgettext:c-format */
2076 1.1 christos _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
2077 1.1 christos abfd, r_type);
2078 1.7 christos bfd_set_error (bfd_error_bad_value);
2079 1.1 christos
2080 1.7 christos return FALSE;
2081 1.7 christos }
2082 1.1 christos
2083 1.1 christos return TRUE;
2084 1.1 christos }
2085 1.1 christos
2086 1.1 christos /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2087 1.7 christos
2088 1.1 christos static bfd_reloc_status_type
2089 1.1 christos ppc_elf_addr16_ha_reloc (bfd *abfd,
2090 1.7 christos arelent *reloc_entry,
2091 1.1 christos asymbol *symbol,
2092 1.1 christos void *data,
2093 1.1 christos asection *input_section,
2094 1.1 christos bfd *output_bfd,
2095 1.3 christos char **error_message ATTRIBUTE_UNUSED)
2096 1.3 christos {
2097 1.3 christos enum elf_ppc_reloc_type r_type;
2098 1.3 christos long insn;
2099 1.1 christos bfd_size_type octets;
2100 1.1 christos bfd_vma value;
2101 1.1 christos
2102 1.1 christos if (output_bfd != NULL)
2103 1.1 christos {
2104 1.1 christos reloc_entry->address += input_section->output_offset;
2105 1.1 christos return bfd_reloc_ok;
2106 1.3 christos }
2107 1.3 christos
2108 1.3 christos reloc_entry->addend += 0x8000;
2109 1.3 christos r_type = reloc_entry->howto->type;
2110 1.3 christos if (r_type != R_PPC_REL16DX_HA)
2111 1.3 christos return bfd_reloc_continue;
2112 1.3 christos
2113 1.3 christos value = 0;
2114 1.3 christos if (!bfd_is_com_section (symbol->section))
2115 1.3 christos value = symbol->value;
2116 1.3 christos value += (reloc_entry->addend
2117 1.3 christos + symbol->section->output_offset
2118 1.3 christos + symbol->section->output_section->vma);
2119 1.3 christos value -= (reloc_entry->address
2120 1.3 christos + input_section->output_offset
2121 1.3 christos + input_section->output_section->vma);
2122 1.3 christos value >>= 16;
2123 1.3 christos
2124 1.3 christos octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2125 1.3 christos insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2126 1.3 christos insn &= ~0x1fffc1;
2127 1.3 christos insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2128 1.1 christos bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2129 1.1 christos return bfd_reloc_ok;
2130 1.1 christos }
2131 1.1 christos
2132 1.1 christos static bfd_reloc_status_type
2133 1.1 christos ppc_elf_unhandled_reloc (bfd *abfd,
2134 1.1 christos arelent *reloc_entry,
2135 1.1 christos asymbol *symbol,
2136 1.1 christos void *data,
2137 1.1 christos asection *input_section,
2138 1.1 christos bfd *output_bfd,
2139 1.1 christos char **error_message)
2140 1.1 christos {
2141 1.1 christos /* If this is a relocatable link (output_bfd test tells us), just
2142 1.1 christos call the generic function. Any adjustment will be done at final
2143 1.1 christos link time. */
2144 1.1 christos if (output_bfd != NULL)
2145 1.1 christos return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2146 1.1 christos input_section, output_bfd, error_message);
2147 1.1 christos
2148 1.1 christos if (error_message != NULL)
2149 1.1 christos {
2150 1.1 christos static char buf[60];
2151 1.1 christos sprintf (buf, _("generic linker can't handle %s"),
2152 1.1 christos reloc_entry->howto->name);
2153 1.1 christos *error_message = buf;
2154 1.1 christos }
2155 1.1 christos return bfd_reloc_dangerous;
2156 1.1 christos }
2157 1.1 christos
2158 1.1 christos /* Sections created by the linker. */
2160 1.1 christos
2161 1.1 christos typedef struct elf_linker_section
2162 1.1 christos {
2163 1.1 christos /* Pointer to the bfd section. */
2164 1.1 christos asection *section;
2165 1.1 christos /* Section name. */
2166 1.1 christos const char *name;
2167 1.1 christos /* Associated bss section name. */
2168 1.1 christos const char *bss_name;
2169 1.1 christos /* Associated symbol name. */
2170 1.1 christos const char *sym_name;
2171 1.1 christos /* Associated symbol. */
2172 1.1 christos struct elf_link_hash_entry *sym;
2173 1.1 christos } elf_linker_section_t;
2174 1.1 christos
2175 1.1 christos /* Linked list of allocated pointer entries. This hangs off of the
2176 1.1 christos symbol lists, and provides allows us to return different pointers,
2177 1.1 christos based on different addend's. */
2178 1.1 christos
2179 1.1 christos typedef struct elf_linker_section_pointers
2180 1.1 christos {
2181 1.1 christos /* next allocated pointer for this symbol */
2182 1.1 christos struct elf_linker_section_pointers *next;
2183 1.1 christos /* offset of pointer from beginning of section */
2184 1.1 christos bfd_vma offset;
2185 1.1 christos /* addend used */
2186 1.1 christos bfd_vma addend;
2187 1.1 christos /* which linker section this is */
2188 1.1 christos elf_linker_section_t *lsect;
2189 1.1 christos } elf_linker_section_pointers_t;
2190 1.1 christos
2191 1.1 christos struct ppc_elf_obj_tdata
2192 1.1 christos {
2193 1.1 christos struct elf_obj_tdata elf;
2194 1.1 christos
2195 1.1 christos /* A mapping from local symbols to offsets into the various linker
2196 1.1 christos sections added. This is index by the symbol index. */
2197 1.1 christos elf_linker_section_pointers_t **linker_section_pointers;
2198 1.1 christos
2199 1.1 christos /* Flags used to auto-detect plt type. */
2200 1.1 christos unsigned int makes_plt_call : 1;
2201 1.1 christos unsigned int has_rel16 : 1;
2202 1.1 christos };
2203 1.1 christos
2204 1.1 christos #define ppc_elf_tdata(bfd) \
2205 1.1 christos ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2206 1.1 christos
2207 1.1 christos #define elf_local_ptr_offsets(bfd) \
2208 1.1 christos (ppc_elf_tdata (bfd)->linker_section_pointers)
2209 1.1 christos
2210 1.1 christos #define is_ppc_elf(bfd) \
2211 1.1 christos (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2212 1.1 christos && elf_object_id (bfd) == PPC32_ELF_DATA)
2213 1.1 christos
2214 1.1 christos /* Override the generic function because we store some extras. */
2215 1.1 christos
2216 1.1 christos static bfd_boolean
2217 1.1 christos ppc_elf_mkobject (bfd *abfd)
2218 1.1 christos {
2219 1.1 christos return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
2220 1.6 christos PPC32_ELF_DATA);
2221 1.6 christos }
2222 1.6 christos
2223 1.6 christos /* When defaulting arch/mach, decode apuinfo to find a better match. */
2224 1.6 christos
2225 1.6 christos bfd_boolean
2226 1.6 christos _bfd_elf_ppc_set_arch (bfd *abfd)
2227 1.6 christos {
2228 1.6 christos unsigned long mach = 0;
2229 1.6 christos asection *s;
2230 1.6 christos unsigned char *contents;
2231 1.6 christos
2232 1.6 christos if (abfd->arch_info->bits_per_word == 32
2233 1.6 christos && bfd_big_endian (abfd))
2234 1.6 christos {
2235 1.6 christos
2236 1.6 christos for (s = abfd->sections; s != NULL; s = s->next)
2237 1.6 christos if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0)
2238 1.6 christos break;
2239 1.6 christos if (s != NULL)
2240 1.6 christos mach = bfd_mach_ppc_vle;
2241 1.6 christos }
2242 1.6 christos
2243 1.6 christos if (mach == 0)
2244 1.6 christos {
2245 1.6 christos s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2246 1.6 christos if (s != NULL && bfd_malloc_and_get_section (abfd, s, &contents))
2247 1.6 christos {
2248 1.6 christos unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4);
2249 1.6 christos unsigned int i;
2250 1.6 christos
2251 1.6 christos for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4)
2252 1.6 christos {
2253 1.6 christos unsigned int val = bfd_get_32 (abfd, contents + i);
2254 1.6 christos switch (val >> 16)
2255 1.6 christos {
2256 1.6 christos case PPC_APUINFO_PMR:
2257 1.6 christos case PPC_APUINFO_RFMCI:
2258 1.6 christos if (mach == 0)
2259 1.6 christos mach = bfd_mach_ppc_titan;
2260 1.6 christos break;
2261 1.6 christos
2262 1.6 christos case PPC_APUINFO_ISEL:
2263 1.6 christos case PPC_APUINFO_CACHELCK:
2264 1.6 christos if (mach == bfd_mach_ppc_titan)
2265 1.6 christos mach = bfd_mach_ppc_e500mc;
2266 1.6 christos break;
2267 1.6 christos
2268 1.6 christos case PPC_APUINFO_SPE:
2269 1.6 christos case PPC_APUINFO_EFS:
2270 1.7 christos case PPC_APUINFO_BRLOCK:
2271 1.6 christos if (mach != bfd_mach_ppc_vle)
2272 1.6 christos mach = bfd_mach_ppc_e500;
2273 1.6 christos break;
2274 1.6 christos
2275 1.6 christos case PPC_APUINFO_VLE:
2276 1.6 christos mach = bfd_mach_ppc_vle;
2277 1.6 christos break;
2278 1.6 christos
2279 1.6 christos default:
2280 1.6 christos mach = -1ul;
2281 1.6 christos }
2282 1.6 christos }
2283 1.6 christos free (contents);
2284 1.6 christos }
2285 1.6 christos }
2286 1.6 christos
2287 1.6 christos if (mach != 0 && mach != -1ul)
2288 1.6 christos {
2289 1.6 christos const bfd_arch_info_type *arch;
2290 1.6 christos
2291 1.6 christos for (arch = abfd->arch_info->next; arch; arch = arch->next)
2292 1.6 christos if (arch->mach == mach)
2293 1.6 christos {
2294 1.6 christos abfd->arch_info = arch;
2295 1.6 christos break;
2296 1.6 christos }
2297 1.6 christos }
2298 1.1 christos return TRUE;
2299 1.6 christos }
2300 1.1 christos
2301 1.1 christos /* Fix bad default arch selected for a 32 bit input bfd when the
2302 1.1 christos default is 64 bit. Also select arch based on apuinfo. */
2303 1.1 christos
2304 1.6 christos static bfd_boolean
2305 1.6 christos ppc_elf_object_p (bfd *abfd)
2306 1.6 christos {
2307 1.6 christos if (!abfd->arch_info->the_default)
2308 1.1 christos return TRUE;
2309 1.1 christos
2310 1.1 christos if (abfd->arch_info->bits_per_word == 64)
2311 1.1 christos {
2312 1.1 christos Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2313 1.1 christos
2314 1.1 christos if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2315 1.1 christos {
2316 1.1 christos /* Relies on arch after 64 bit default being 32 bit default. */
2317 1.1 christos abfd->arch_info = abfd->arch_info->next;
2318 1.6 christos BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2319 1.1 christos }
2320 1.1 christos }
2321 1.1 christos return _bfd_elf_ppc_set_arch (abfd);
2322 1.1 christos }
2323 1.1 christos
2324 1.1 christos /* Function to set whether a module needs the -mrelocatable bit set. */
2325 1.1 christos
2326 1.1 christos static bfd_boolean
2327 1.1 christos ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2328 1.1 christos {
2329 1.1 christos BFD_ASSERT (!elf_flags_init (abfd)
2330 1.1 christos || elf_elfheader (abfd)->e_flags == flags);
2331 1.1 christos
2332 1.1 christos elf_elfheader (abfd)->e_flags = flags;
2333 1.1 christos elf_flags_init (abfd) = TRUE;
2334 1.1 christos return TRUE;
2335 1.1 christos }
2336 1.1 christos
2337 1.1 christos /* Support for core dump NOTE sections. */
2338 1.1 christos
2339 1.1 christos static bfd_boolean
2340 1.1 christos ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2341 1.1 christos {
2342 1.1 christos int offset;
2343 1.1 christos unsigned int size;
2344 1.1 christos
2345 1.1 christos switch (note->descsz)
2346 1.1 christos {
2347 1.1 christos default:
2348 1.1 christos return FALSE;
2349 1.3 christos
2350 1.1 christos case 268: /* Linux/PPC. */
2351 1.1 christos /* pr_cursig */
2352 1.3 christos elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2353 1.1 christos
2354 1.1 christos /* pr_pid */
2355 1.1 christos elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2356 1.1 christos
2357 1.1 christos /* pr_reg */
2358 1.1 christos offset = 72;
2359 1.1 christos size = 192;
2360 1.1 christos
2361 1.1 christos break;
2362 1.1 christos }
2363 1.1 christos
2364 1.1 christos /* Make a ".reg/999" section. */
2365 1.1 christos return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2366 1.1 christos size, note->descpos + offset);
2367 1.1 christos }
2368 1.1 christos
2369 1.1 christos static bfd_boolean
2370 1.1 christos ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2371 1.1 christos {
2372 1.1 christos switch (note->descsz)
2373 1.1 christos {
2374 1.1 christos default:
2375 1.3 christos return FALSE;
2376 1.1 christos
2377 1.3 christos case 128: /* Linux/PPC elf_prpsinfo. */
2378 1.1 christos elf_tdata (abfd)->core->pid
2379 1.3 christos = bfd_get_32 (abfd, note->descdata + 16);
2380 1.1 christos elf_tdata (abfd)->core->program
2381 1.1 christos = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2382 1.1 christos elf_tdata (abfd)->core->command
2383 1.1 christos = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2384 1.1 christos }
2385 1.1 christos
2386 1.1 christos /* Note that for some reason, a spurious space is tacked
2387 1.1 christos onto the end of the args in some (at least one anyway)
2388 1.3 christos implementations, so strip it off if it exists. */
2389 1.1 christos
2390 1.1 christos {
2391 1.1 christos char *command = elf_tdata (abfd)->core->command;
2392 1.1 christos int n = strlen (command);
2393 1.1 christos
2394 1.1 christos if (0 < n && command[n - 1] == ' ')
2395 1.1 christos command[n - 1] = '\0';
2396 1.1 christos }
2397 1.1 christos
2398 1.1 christos return TRUE;
2399 1.1 christos }
2400 1.1 christos
2401 1.1 christos static char *
2402 1.1 christos ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2403 1.1 christos {
2404 1.1 christos switch (note_type)
2405 1.1 christos {
2406 1.1 christos default:
2407 1.1 christos return NULL;
2408 1.7 christos
2409 1.1 christos case NT_PRPSINFO:
2410 1.1 christos {
2411 1.1 christos char data[128] ATTRIBUTE_NONSTRING;
2412 1.1 christos va_list ap;
2413 1.1 christos
2414 1.7 christos va_start (ap, note_type);
2415 1.7 christos memset (data, 0, sizeof (data));
2416 1.7 christos strncpy (data + 32, va_arg (ap, const char *), 16);
2417 1.7 christos #if GCC_VERSION == 8001
2418 1.7 christos DIAGNOSTIC_PUSH;
2419 1.7 christos /* GCC 8.1 warns about 80 equals destination size with
2420 1.7 christos -Wstringop-truncation:
2421 1.7 christos https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643
2422 1.1 christos */
2423 1.7 christos DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION;
2424 1.7 christos #endif
2425 1.7 christos strncpy (data + 48, va_arg (ap, const char *), 80);
2426 1.1 christos #if GCC_VERSION == 8001
2427 1.1 christos DIAGNOSTIC_POP;
2428 1.1 christos #endif
2429 1.1 christos va_end (ap);
2430 1.1 christos return elfcore_write_note (abfd, buf, bufsiz,
2431 1.1 christos "CORE", note_type, data, sizeof (data));
2432 1.1 christos }
2433 1.1 christos
2434 1.1 christos case NT_PRSTATUS:
2435 1.1 christos {
2436 1.1 christos char data[268];
2437 1.1 christos va_list ap;
2438 1.1 christos long pid;
2439 1.1 christos int cursig;
2440 1.1 christos const void *greg;
2441 1.1 christos
2442 1.1 christos va_start (ap, note_type);
2443 1.1 christos memset (data, 0, 72);
2444 1.1 christos pid = va_arg (ap, long);
2445 1.1 christos bfd_put_32 (abfd, pid, data + 24);
2446 1.1 christos cursig = va_arg (ap, int);
2447 1.1 christos bfd_put_16 (abfd, cursig, data + 12);
2448 1.1 christos greg = va_arg (ap, const void *);
2449 1.1 christos memcpy (data + 72, greg, 192);
2450 1.1 christos memset (data + 264, 0, 4);
2451 1.1 christos va_end (ap);
2452 1.1 christos return elfcore_write_note (abfd, buf, bufsiz,
2453 1.1 christos "CORE", note_type, data, sizeof (data));
2454 1.1 christos }
2455 1.1 christos }
2456 1.3 christos }
2457 1.1 christos
2458 1.1 christos static flagword
2459 1.1 christos ppc_elf_lookup_section_flags (char *flag_name)
2460 1.1 christos {
2461 1.1 christos
2462 1.1 christos if (!strcmp (flag_name, "SHF_PPC_VLE"))
2463 1.1 christos return SHF_PPC_VLE;
2464 1.1 christos
2465 1.1 christos return 0;
2466 1.1 christos }
2467 1.1 christos
2468 1.1 christos /* Return address for Ith PLT stub in section PLT, for relocation REL
2469 1.1 christos or (bfd_vma) -1 if it should not be included. */
2470 1.1 christos
2471 1.1 christos static bfd_vma
2472 1.1 christos ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2473 1.1 christos const asection *plt ATTRIBUTE_UNUSED,
2474 1.1 christos const arelent *rel)
2475 1.1 christos {
2476 1.1 christos return rel->address;
2477 1.1 christos }
2478 1.1 christos
2479 1.1 christos /* Handle a PowerPC specific section when reading an object file. This
2480 1.1 christos is called when bfd_section_from_shdr finds a section with an unknown
2481 1.1 christos type. */
2482 1.1 christos
2483 1.1 christos static bfd_boolean
2484 1.1 christos ppc_elf_section_from_shdr (bfd *abfd,
2485 1.1 christos Elf_Internal_Shdr *hdr,
2486 1.1 christos const char *name,
2487 1.1 christos int shindex)
2488 1.1 christos {
2489 1.1 christos asection *newsect;
2490 1.1 christos flagword flags;
2491 1.1 christos
2492 1.1 christos if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2493 1.1 christos return FALSE;
2494 1.1 christos
2495 1.1 christos newsect = hdr->bfd_section;
2496 1.1 christos flags = bfd_get_section_flags (abfd, newsect);
2497 1.1 christos if (hdr->sh_flags & SHF_EXCLUDE)
2498 1.1 christos flags |= SEC_EXCLUDE;
2499 1.1 christos
2500 1.1 christos if (hdr->sh_type == SHT_ORDERED)
2501 1.1 christos flags |= SEC_SORT_ENTRIES;
2502 1.1 christos
2503 1.1 christos bfd_set_section_flags (abfd, newsect, flags);
2504 1.1 christos return TRUE;
2505 1.1 christos }
2506 1.1 christos
2507 1.1 christos /* Set up any other section flags and such that may be necessary. */
2508 1.1 christos
2509 1.1 christos static bfd_boolean
2510 1.1 christos ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2511 1.1 christos Elf_Internal_Shdr *shdr,
2512 1.1 christos asection *asect)
2513 1.1 christos {
2514 1.1 christos if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2515 1.1 christos shdr->sh_type = SHT_ORDERED;
2516 1.1 christos
2517 1.1 christos return TRUE;
2518 1.1 christos }
2519 1.1 christos
2520 1.1 christos /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2521 1.1 christos need to bump up the number of section headers. */
2522 1.1 christos
2523 1.1 christos static int
2524 1.1 christos ppc_elf_additional_program_headers (bfd *abfd,
2525 1.1 christos struct bfd_link_info *info ATTRIBUTE_UNUSED)
2526 1.1 christos {
2527 1.1 christos asection *s;
2528 1.1 christos int ret = 0;
2529 1.1 christos
2530 1.1 christos s = bfd_get_section_by_name (abfd, ".sbss2");
2531 1.1 christos if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2532 1.1 christos ++ret;
2533 1.1 christos
2534 1.1 christos s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2535 1.1 christos if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2536 1.1 christos ++ret;
2537 1.1 christos
2538 1.3 christos return ret;
2539 1.1 christos }
2540 1.1 christos
2541 1.1 christos /* Modify the segment map for VLE executables. */
2542 1.1 christos
2543 1.1 christos bfd_boolean
2544 1.7 christos ppc_elf_modify_segment_map (bfd *abfd,
2545 1.1 christos struct bfd_link_info *info ATTRIBUTE_UNUSED)
2546 1.1 christos {
2547 1.1 christos struct elf_segment_map *m;
2548 1.1 christos
2549 1.1 christos /* At this point in the link, output sections have already been sorted by
2550 1.1 christos LMA and assigned to segments. All that is left to do is to ensure
2551 1.1 christos there is no mixing of VLE & non-VLE sections in a text segment.
2552 1.3 christos If we find that case, we split the segment.
2553 1.1 christos We maintain the original output section order. */
2554 1.7 christos
2555 1.7 christos for (m = elf_seg_map (abfd); m != NULL; m = m->next)
2556 1.7 christos {
2557 1.7 christos struct elf_segment_map *n;
2558 1.7 christos bfd_size_type amt;
2559 1.7 christos unsigned int j, k;
2560 1.1 christos unsigned int p_flags;
2561 1.1 christos
2562 1.7 christos if (m->p_type != PT_LOAD || m->count == 0)
2563 1.1 christos continue;
2564 1.7 christos
2565 1.7 christos for (p_flags = PF_R, j = 0; j != m->count; ++j)
2566 1.7 christos {
2567 1.7 christos if ((m->sections[j]->flags & SEC_READONLY) == 0)
2568 1.7 christos p_flags |= PF_W;
2569 1.7 christos if ((m->sections[j]->flags & SEC_CODE) != 0)
2570 1.7 christos {
2571 1.7 christos p_flags |= PF_X;
2572 1.7 christos if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2573 1.7 christos p_flags |= PF_PPC_VLE;
2574 1.7 christos break;
2575 1.7 christos }
2576 1.7 christos }
2577 1.7 christos if (j != m->count)
2578 1.1 christos while (++j != m->count)
2579 1.7 christos {
2580 1.7 christos unsigned int p_flags1 = PF_R;
2581 1.7 christos
2582 1.7 christos if ((m->sections[j]->flags & SEC_READONLY) == 0)
2583 1.7 christos p_flags1 |= PF_W;
2584 1.7 christos if ((m->sections[j]->flags & SEC_CODE) != 0)
2585 1.7 christos {
2586 1.7 christos p_flags1 |= PF_X;
2587 1.7 christos if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2588 1.7 christos p_flags1 |= PF_PPC_VLE;
2589 1.7 christos if (((p_flags1 ^ p_flags) & PF_PPC_VLE) != 0)
2590 1.7 christos break;
2591 1.7 christos }
2592 1.7 christos p_flags |= p_flags1;
2593 1.7 christos }
2594 1.7 christos /* If we're splitting a segment which originally contained rw
2595 1.7 christos sections then those sections might now only be in one of the
2596 1.7 christos two parts. So always set p_flags if splitting, even if we
2597 1.7 christos are being called for objcopy with p_flags_valid set. */
2598 1.7 christos if (j != m->count || !m->p_flags_valid)
2599 1.7 christos {
2600 1.7 christos m->p_flags_valid = 1;
2601 1.1 christos m->p_flags = p_flags;
2602 1.1 christos }
2603 1.7 christos if (j == m->count)
2604 1.1 christos continue;
2605 1.1 christos
2606 1.1 christos /* Sections 0..j-1 stay in this (current) segment,
2607 1.1 christos the remainder are put in a new segment.
2608 1.1 christos The scan resumes with the new segment. */
2609 1.1 christos
2610 1.1 christos amt = sizeof (struct elf_segment_map);
2611 1.7 christos amt += (m->count - j - 1) * sizeof (asection *);
2612 1.1 christos n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2613 1.1 christos if (n == NULL)
2614 1.1 christos return FALSE;
2615 1.1 christos
2616 1.7 christos n->p_type = PT_LOAD;
2617 1.7 christos n->count = m->count - j;
2618 1.7 christos for (k = 0; k < n->count; ++k)
2619 1.1 christos n->sections[k] = m->sections[j + k];
2620 1.1 christos m->count = j;
2621 1.1 christos m->p_size_valid = 0;
2622 1.1 christos n->next = m->next;
2623 1.1 christos m->next = n;
2624 1.1 christos }
2625 1.1 christos
2626 1.1 christos return TRUE;
2627 1.1 christos }
2628 1.1 christos
2629 1.1 christos /* Add extra PPC sections -- Note, for now, make .sbss2 and
2630 1.1 christos .PPC.EMB.sbss0 a normal section, and not a bss section so
2631 1.1 christos that the linker doesn't crater when trying to make more than
2632 1.1 christos 2 sections. */
2633 1.6 christos
2634 1.6 christos static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2635 1.6 christos {
2636 1.6 christos { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2637 1.6 christos { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2638 1.6 christos { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2639 1.6 christos { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2640 1.6 christos { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2641 1.6 christos { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2642 1.6 christos { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 },
2643 1.1 christos { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2644 1.1 christos { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2645 1.1 christos { NULL, 0, 0, 0, 0 }
2646 1.1 christos };
2647 1.7 christos
2648 1.1 christos /* This is what we want for new plt/got. */
2649 1.1 christos static struct bfd_elf_special_section ppc_alt_plt =
2650 1.7 christos { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2651 1.1 christos
2652 1.1 christos static const struct bfd_elf_special_section *
2653 1.1 christos ppc_elf_get_sec_type_attr (bfd *abfd, asection *sec)
2654 1.1 christos {
2655 1.1 christos const struct bfd_elf_special_section *ssect;
2656 1.1 christos
2657 1.1 christos /* See if this is one of the special sections. */
2658 1.1 christos if (sec->name == NULL)
2659 1.1 christos return NULL;
2660 1.1 christos
2661 1.1 christos ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2662 1.1 christos sec->use_rela_p);
2663 1.1 christos if (ssect != NULL)
2664 1.1 christos {
2665 1.1 christos if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2666 1.1 christos ssect = &ppc_alt_plt;
2667 1.1 christos return ssect;
2668 1.1 christos }
2669 1.1 christos
2670 1.1 christos return _bfd_elf_get_sec_type_attr (abfd, sec);
2671 1.1 christos }
2672 1.1 christos
2673 1.1 christos /* Very simple linked list structure for recording apuinfo values. */
2675 1.1 christos typedef struct apuinfo_list
2676 1.1 christos {
2677 1.1 christos struct apuinfo_list *next;
2678 1.1 christos unsigned long value;
2679 1.1 christos }
2680 1.1 christos apuinfo_list;
2681 1.1 christos
2682 1.1 christos static apuinfo_list *head;
2683 1.1 christos static bfd_boolean apuinfo_set;
2684 1.1 christos
2685 1.1 christos static void
2686 1.1 christos apuinfo_list_init (void)
2687 1.1 christos {
2688 1.1 christos head = NULL;
2689 1.1 christos apuinfo_set = FALSE;
2690 1.1 christos }
2691 1.1 christos
2692 1.1 christos static void
2693 1.1 christos apuinfo_list_add (unsigned long value)
2694 1.1 christos {
2695 1.1 christos apuinfo_list *entry = head;
2696 1.1 christos
2697 1.1 christos while (entry != NULL)
2698 1.1 christos {
2699 1.1 christos if (entry->value == value)
2700 1.1 christos return;
2701 1.1 christos entry = entry->next;
2702 1.1 christos }
2703 1.1 christos
2704 1.1 christos entry = bfd_malloc (sizeof (* entry));
2705 1.1 christos if (entry == NULL)
2706 1.1 christos return;
2707 1.1 christos
2708 1.1 christos entry->value = value;
2709 1.1 christos entry->next = head;
2710 1.1 christos head = entry;
2711 1.1 christos }
2712 1.1 christos
2713 1.1 christos static unsigned
2714 1.1 christos apuinfo_list_length (void)
2715 1.1 christos {
2716 1.1 christos apuinfo_list *entry;
2717 1.1 christos unsigned long count;
2718 1.1 christos
2719 1.1 christos for (entry = head, count = 0;
2720 1.1 christos entry;
2721 1.1 christos entry = entry->next)
2722 1.1 christos ++ count;
2723 1.1 christos
2724 1.1 christos return count;
2725 1.1 christos }
2726 1.1 christos
2727 1.1 christos static inline unsigned long
2728 1.1 christos apuinfo_list_element (unsigned long number)
2729 1.1 christos {
2730 1.1 christos apuinfo_list * entry;
2731 1.1 christos
2732 1.1 christos for (entry = head;
2733 1.1 christos entry && number --;
2734 1.1 christos entry = entry->next)
2735 1.1 christos ;
2736 1.1 christos
2737 1.1 christos return entry ? entry->value : 0;
2738 1.1 christos }
2739 1.1 christos
2740 1.1 christos static void
2741 1.1 christos apuinfo_list_finish (void)
2742 1.1 christos {
2743 1.1 christos apuinfo_list *entry;
2744 1.1 christos
2745 1.1 christos for (entry = head; entry;)
2746 1.1 christos {
2747 1.1 christos apuinfo_list *next = entry->next;
2748 1.1 christos free (entry);
2749 1.1 christos entry = next;
2750 1.1 christos }
2751 1.1 christos
2752 1.1 christos head = NULL;
2753 1.1 christos }
2754 1.1 christos
2755 1.1 christos /* Scan the input BFDs and create a linked list of
2756 1.1 christos the APUinfo values that will need to be emitted. */
2757 1.1 christos
2758 1.1 christos static void
2759 1.1 christos ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2760 1.1 christos {
2761 1.1 christos bfd *ibfd;
2762 1.1 christos asection *asec;
2763 1.1 christos char *buffer = NULL;
2764 1.1 christos bfd_size_type largest_input_size = 0;
2765 1.1 christos unsigned i;
2766 1.1 christos unsigned long length;
2767 1.1 christos const char *error_message = NULL;
2768 1.1 christos
2769 1.1 christos if (link_info == NULL)
2770 1.1 christos return;
2771 1.3 christos
2772 1.1 christos apuinfo_list_init ();
2773 1.1 christos
2774 1.1 christos /* Read in the input sections contents. */
2775 1.1 christos for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
2776 1.1 christos {
2777 1.1 christos unsigned long datum;
2778 1.1 christos
2779 1.7 christos asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2780 1.7 christos if (asec == NULL)
2781 1.1 christos continue;
2782 1.1 christos
2783 1.1 christos /* xgettext:c-format */
2784 1.1 christos error_message = _("corrupt %s section in %pB");
2785 1.1 christos length = asec->size;
2786 1.1 christos if (length < 20)
2787 1.1 christos goto fail;
2788 1.1 christos
2789 1.1 christos apuinfo_set = TRUE;
2790 1.1 christos if (largest_input_size < asec->size)
2791 1.1 christos {
2792 1.1 christos if (buffer)
2793 1.1 christos free (buffer);
2794 1.1 christos largest_input_size = asec->size;
2795 1.1 christos buffer = bfd_malloc (largest_input_size);
2796 1.1 christos if (!buffer)
2797 1.1 christos return;
2798 1.1 christos }
2799 1.7 christos
2800 1.7 christos if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2801 1.1 christos || (bfd_bread (buffer, length, ibfd) != length))
2802 1.1 christos {
2803 1.1 christos /* xgettext:c-format */
2804 1.1 christos error_message = _("unable to read in %s section from %pB");
2805 1.1 christos goto fail;
2806 1.1 christos }
2807 1.1 christos
2808 1.1 christos /* Verify the contents of the header. Note - we have to
2809 1.1 christos extract the values this way in order to allow for a
2810 1.1 christos host whose endian-ness is different from the target. */
2811 1.1 christos datum = bfd_get_32 (ibfd, buffer);
2812 1.1 christos if (datum != sizeof APUINFO_LABEL)
2813 1.1 christos goto fail;
2814 1.1 christos
2815 1.1 christos datum = bfd_get_32 (ibfd, buffer + 8);
2816 1.1 christos if (datum != 0x2)
2817 1.1 christos goto fail;
2818 1.1 christos
2819 1.1 christos if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2820 1.1 christos goto fail;
2821 1.1 christos
2822 1.1 christos /* Get the number of bytes used for apuinfo entries. */
2823 1.1 christos datum = bfd_get_32 (ibfd, buffer + 4);
2824 1.1 christos if (datum + 20 != length)
2825 1.1 christos goto fail;
2826 1.1 christos
2827 1.1 christos /* Scan the apuinfo section, building a list of apuinfo numbers. */
2828 1.1 christos for (i = 0; i < datum; i += 4)
2829 1.1 christos apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2830 1.1 christos }
2831 1.1 christos
2832 1.1 christos error_message = NULL;
2833 1.1 christos
2834 1.1 christos if (apuinfo_set)
2835 1.1 christos {
2836 1.1 christos /* Compute the size of the output section. */
2837 1.1 christos unsigned num_entries = apuinfo_list_length ();
2838 1.1 christos
2839 1.1 christos /* Set the output section size, if it exists. */
2840 1.1 christos asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2841 1.7 christos
2842 1.7 christos if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2843 1.1 christos {
2844 1.1 christos ibfd = abfd;
2845 1.1 christos /* xgettext:c-format */
2846 1.1 christos error_message = _("warning: unable to set size of %s section in %pB");
2847 1.1 christos }
2848 1.1 christos }
2849 1.1 christos
2850 1.1 christos fail:
2851 1.7 christos if (buffer)
2852 1.1 christos free (buffer);
2853 1.1 christos
2854 1.1 christos if (error_message)
2855 1.1 christos _bfd_error_handler (error_message, APUINFO_SECTION_NAME, ibfd);
2856 1.1 christos }
2857 1.1 christos
2858 1.1 christos /* Prevent the output section from accumulating the input sections'
2859 1.1 christos contents. We have already stored this in our linked list structure. */
2860 1.1 christos
2861 1.1 christos static bfd_boolean
2862 1.1 christos ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2863 1.1 christos struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2864 1.1 christos asection *asec,
2865 1.1 christos bfd_byte *contents ATTRIBUTE_UNUSED)
2866 1.1 christos {
2867 1.1 christos return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2868 1.1 christos }
2869 1.1 christos
2870 1.1 christos /* Finally we can generate the output section. */
2871 1.1 christos
2872 1.1 christos static void
2873 1.1 christos ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2874 1.1 christos {
2875 1.1 christos bfd_byte *buffer;
2876 1.1 christos asection *asec;
2877 1.1 christos unsigned i;
2878 1.1 christos unsigned num_entries;
2879 1.1 christos bfd_size_type length;
2880 1.1 christos
2881 1.1 christos asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2882 1.1 christos if (asec == NULL)
2883 1.1 christos return;
2884 1.1 christos
2885 1.1 christos if (!apuinfo_set)
2886 1.1 christos return;
2887 1.1 christos
2888 1.1 christos length = asec->size;
2889 1.1 christos if (length < 20)
2890 1.1 christos return;
2891 1.7 christos
2892 1.7 christos buffer = bfd_malloc (length);
2893 1.1 christos if (buffer == NULL)
2894 1.1 christos {
2895 1.1 christos _bfd_error_handler
2896 1.1 christos (_("failed to allocate space for new APUinfo section"));
2897 1.1 christos return;
2898 1.1 christos }
2899 1.1 christos
2900 1.1 christos /* Create the apuinfo header. */
2901 1.1 christos num_entries = apuinfo_list_length ();
2902 1.1 christos bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2903 1.1 christos bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2904 1.1 christos bfd_put_32 (abfd, 0x2, buffer + 8);
2905 1.1 christos strcpy ((char *) buffer + 12, APUINFO_LABEL);
2906 1.1 christos
2907 1.1 christos length = 20;
2908 1.1 christos for (i = 0; i < num_entries; i++)
2909 1.1 christos {
2910 1.1 christos bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2911 1.7 christos length += 4;
2912 1.1 christos }
2913 1.1 christos
2914 1.7 christos if (length != asec->size)
2915 1.1 christos _bfd_error_handler (_("failed to compute new APUinfo section"));
2916 1.1 christos
2917 1.1 christos if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2918 1.1 christos _bfd_error_handler (_("failed to install new APUinfo section"));
2919 1.1 christos
2920 1.1 christos free (buffer);
2921 1.1 christos
2922 1.1 christos apuinfo_list_finish ();
2923 1.1 christos }
2924 1.7 christos
2925 1.1 christos static bfd_boolean
2927 1.1 christos is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2928 1.1 christos {
2929 1.1 christos bfd_byte buf[4 * 4];
2930 1.1 christos
2931 1.1 christos if (!bfd_get_section_contents (abfd, glink, buf, off, sizeof buf))
2932 1.1 christos return FALSE;
2933 1.1 christos
2934 1.1 christos return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2935 1.1 christos && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2936 1.1 christos && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2937 1.1 christos && bfd_get_32 (abfd, buf + 12) == BCTR);
2938 1.1 christos }
2939 1.1 christos
2940 1.1 christos static bfd_boolean
2941 1.1 christos section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2942 1.1 christos {
2943 1.1 christos bfd_vma vma = *(bfd_vma *) ptr;
2944 1.1 christos return ((section->flags & SEC_ALLOC) != 0
2945 1.1 christos && section->vma <= vma
2946 1.1 christos && vma < section->vma + section->size);
2947 1.1 christos }
2948 1.1 christos
2949 1.1 christos static long
2950 1.1 christos ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2951 1.1 christos long dynsymcount, asymbol **dynsyms,
2952 1.1 christos asymbol **ret)
2953 1.7 christos {
2954 1.1 christos bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2955 1.1 christos asection *plt, *relplt, *dynamic, *glink;
2956 1.7 christos bfd_vma glink_vma = 0;
2957 1.1 christos bfd_vma resolv_vma = 0;
2958 1.1 christos bfd_vma stub_off;
2959 1.1 christos asymbol *s;
2960 1.1 christos arelent *p;
2961 1.1 christos long count, i, stub_delta;
2962 1.1 christos size_t size;
2963 1.1 christos char *names;
2964 1.1 christos bfd_byte buf[4];
2965 1.1 christos
2966 1.1 christos *ret = NULL;
2967 1.1 christos
2968 1.1 christos if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2969 1.1 christos return 0;
2970 1.1 christos
2971 1.1 christos if (dynsymcount <= 0)
2972 1.1 christos return 0;
2973 1.1 christos
2974 1.1 christos relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2975 1.1 christos if (relplt == NULL)
2976 1.1 christos return 0;
2977 1.1 christos
2978 1.1 christos plt = bfd_get_section_by_name (abfd, ".plt");
2979 1.1 christos if (plt == NULL)
2980 1.1 christos return 0;
2981 1.1 christos
2982 1.1 christos /* Call common code to handle old-style executable PLTs. */
2983 1.1 christos if (elf_section_flags (plt) & SHF_EXECINSTR)
2984 1.1 christos return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2985 1.1 christos dynsymcount, dynsyms, ret);
2986 1.1 christos
2987 1.1 christos /* If this object was prelinked, the prelinker stored the address
2988 1.1 christos of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2989 1.1 christos dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2990 1.1 christos if (dynamic != NULL)
2991 1.1 christos {
2992 1.1 christos bfd_byte *dynbuf, *extdyn, *extdynend;
2993 1.1 christos size_t extdynsize;
2994 1.1 christos void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2995 1.1 christos
2996 1.1 christos if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2997 1.1 christos return -1;
2998 1.1 christos
2999 1.1 christos extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3000 1.1 christos swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3001 1.1 christos
3002 1.1 christos extdyn = dynbuf;
3003 1.1 christos extdynend = extdyn + dynamic->size;
3004 1.1 christos for (; extdyn < extdynend; extdyn += extdynsize)
3005 1.1 christos {
3006 1.1 christos Elf_Internal_Dyn dyn;
3007 1.1 christos (*swap_dyn_in) (abfd, extdyn, &dyn);
3008 1.1 christos
3009 1.1 christos if (dyn.d_tag == DT_NULL)
3010 1.1 christos break;
3011 1.1 christos
3012 1.1 christos if (dyn.d_tag == DT_PPC_GOT)
3013 1.1 christos {
3014 1.1 christos unsigned int g_o_t = dyn.d_un.d_val;
3015 1.1 christos asection *got = bfd_get_section_by_name (abfd, ".got");
3016 1.1 christos if (got != NULL
3017 1.1 christos && bfd_get_section_contents (abfd, got, buf,
3018 1.1 christos g_o_t - got->vma + 4, 4))
3019 1.1 christos glink_vma = bfd_get_32 (abfd, buf);
3020 1.1 christos break;
3021 1.1 christos }
3022 1.1 christos }
3023 1.1 christos free (dynbuf);
3024 1.1 christos }
3025 1.1 christos
3026 1.1 christos /* Otherwise we read the first plt entry. */
3027 1.1 christos if (glink_vma == 0)
3028 1.1 christos {
3029 1.1 christos if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
3030 1.1 christos glink_vma = bfd_get_32 (abfd, buf);
3031 1.1 christos }
3032 1.1 christos
3033 1.1 christos if (glink_vma == 0)
3034 1.1 christos return 0;
3035 1.1 christos
3036 1.1 christos /* The .glink section usually does not survive the final
3037 1.1 christos link; search for the section (usually .text) where the
3038 1.1 christos glink stubs now reside. */
3039 1.1 christos glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
3040 1.1 christos if (glink == NULL)
3041 1.1 christos return 0;
3042 1.1 christos
3043 1.1 christos /* Determine glink PLT resolver by reading the relative branch
3044 1.1 christos from the first glink stub. */
3045 1.1 christos if (bfd_get_section_contents (abfd, glink, buf,
3046 1.1 christos glink_vma - glink->vma, 4))
3047 1.1 christos {
3048 1.1 christos unsigned int insn = bfd_get_32 (abfd, buf);
3049 1.1 christos
3050 1.1 christos /* The first glink stub may either branch to the resolver ... */
3051 1.1 christos insn ^= B;
3052 1.1 christos if ((insn & ~0x3fffffc) == 0)
3053 1.1 christos resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
3054 1.1 christos
3055 1.1 christos /* ... or fall through a bunch of NOPs. */
3056 1.1 christos else if ((insn ^ B ^ NOP) == 0)
3057 1.1 christos for (i = 4;
3058 1.1 christos bfd_get_section_contents (abfd, glink, buf,
3059 1.1 christos glink_vma - glink->vma + i, 4);
3060 1.1 christos i += 4)
3061 1.1 christos if (bfd_get_32 (abfd, buf) != NOP)
3062 1.1 christos {
3063 1.1 christos resolv_vma = glink_vma + i;
3064 1.1 christos break;
3065 1.1 christos }
3066 1.1 christos }
3067 1.7 christos
3068 1.7 christos count = relplt->size / sizeof (Elf32_External_Rela);
3069 1.7 christos /* If the stubs are those for -shared/-pie then we might have
3070 1.7 christos multiple stubs for each plt entry. If that is the case then
3071 1.7 christos there is no way to associate stubs with their plt entries short
3072 1.7 christos of figuring out the GOT pointer value used in the stub.
3073 1.7 christos The offsets tested here need to cover all possible values of
3074 1.7 christos GLINK_ENTRY_SIZE for other than __tls_get_addr_opt. */
3075 1.1 christos stub_off = glink_vma - glink->vma;
3076 1.1 christos for (stub_delta = 16; stub_delta <= 32; stub_delta += 8)
3077 1.1 christos if (is_nonpic_glink_stub (abfd, glink, stub_off - stub_delta))
3078 1.1 christos break;
3079 1.1 christos if (stub_delta > 32)
3080 1.1 christos return 0;
3081 1.1 christos
3082 1.1 christos slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3083 1.1 christos if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
3084 1.1 christos return -1;
3085 1.1 christos
3086 1.1 christos size = count * sizeof (asymbol);
3087 1.1 christos p = relplt->relocation;
3088 1.1 christos for (i = 0; i < count; i++, p++)
3089 1.1 christos {
3090 1.1 christos size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3091 1.1 christos if (p->addend != 0)
3092 1.1 christos size += sizeof ("+0x") - 1 + 8;
3093 1.1 christos }
3094 1.1 christos
3095 1.1 christos size += sizeof (asymbol) + sizeof ("__glink");
3096 1.1 christos
3097 1.1 christos if (resolv_vma)
3098 1.1 christos size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3099 1.7 christos
3100 1.1 christos s = *ret = bfd_malloc (size);
3101 1.3 christos if (s == NULL)
3102 1.3 christos return -1;
3103 1.1 christos
3104 1.1 christos stub_off = glink_vma - glink->vma;
3105 1.1 christos names = (char *) (s + count + 1 + (resolv_vma != 0));
3106 1.7 christos p = relplt->relocation + count - 1;
3107 1.7 christos for (i = 0; i < count; i++)
3108 1.7 christos {
3109 1.1 christos size_t len;
3110 1.1 christos
3111 1.1 christos stub_off -= stub_delta;
3112 1.1 christos if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
3113 1.1 christos stub_off -= 32;
3114 1.1 christos *s = **p->sym_ptr_ptr;
3115 1.1 christos /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3116 1.7 christos we are defining a symbol, ensure one of them is set. */
3117 1.1 christos if ((s->flags & BSF_LOCAL) == 0)
3118 1.1 christos s->flags |= BSF_GLOBAL;
3119 1.1 christos s->flags |= BSF_SYNTHETIC;
3120 1.1 christos s->section = glink;
3121 1.1 christos s->value = stub_off;
3122 1.1 christos s->name = names;
3123 1.1 christos s->udata.p = NULL;
3124 1.1 christos len = strlen ((*p->sym_ptr_ptr)->name);
3125 1.1 christos memcpy (names, (*p->sym_ptr_ptr)->name, len);
3126 1.1 christos names += len;
3127 1.1 christos if (p->addend != 0)
3128 1.1 christos {
3129 1.1 christos memcpy (names, "+0x", sizeof ("+0x") - 1);
3130 1.1 christos names += sizeof ("+0x") - 1;
3131 1.1 christos bfd_sprintf_vma (abfd, names, p->addend);
3132 1.3 christos names += strlen (names);
3133 1.1 christos }
3134 1.1 christos memcpy (names, "@plt", sizeof ("@plt"));
3135 1.1 christos names += sizeof ("@plt");
3136 1.1 christos ++s;
3137 1.1 christos --p;
3138 1.1 christos }
3139 1.1 christos
3140 1.1 christos /* Add a symbol at the start of the glink branch table. */
3141 1.1 christos memset (s, 0, sizeof *s);
3142 1.1 christos s->the_bfd = abfd;
3143 1.1 christos s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3144 1.1 christos s->section = glink;
3145 1.1 christos s->value = glink_vma - glink->vma;
3146 1.1 christos s->name = names;
3147 1.1 christos memcpy (names, "__glink", sizeof ("__glink"));
3148 1.1 christos names += sizeof ("__glink");
3149 1.1 christos s++;
3150 1.1 christos count++;
3151 1.1 christos
3152 1.1 christos if (resolv_vma)
3153 1.1 christos {
3154 1.1 christos /* Add a symbol for the glink PLT resolver. */
3155 1.1 christos memset (s, 0, sizeof *s);
3156 1.1 christos s->the_bfd = abfd;
3157 1.1 christos s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3158 1.1 christos s->section = glink;
3159 1.1 christos s->value = resolv_vma - glink->vma;
3160 1.1 christos s->name = names;
3161 1.1 christos memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3162 1.1 christos names += sizeof ("__glink_PLTresolve");
3163 1.1 christos s++;
3164 1.1 christos count++;
3165 1.1 christos }
3166 1.1 christos
3167 1.1 christos return count;
3168 1.1 christos }
3169 1.1 christos
3170 1.1 christos /* The following functions are specific to the ELF linker, while
3172 1.1 christos functions above are used generally. They appear in this file more
3173 1.1 christos or less in the order in which they are called. eg.
3174 1.1 christos ppc_elf_check_relocs is called early in the link process,
3175 1.1 christos ppc_elf_finish_dynamic_sections is one of the last functions
3176 1.1 christos called. */
3177 1.1 christos
3178 1.1 christos /* Track PLT entries needed for a given symbol. We might need more
3179 1.1 christos than one glink entry per symbol when generating a pic binary. */
3180 1.1 christos struct plt_entry
3181 1.1 christos {
3182 1.1 christos struct plt_entry *next;
3183 1.1 christos
3184 1.1 christos /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3185 1.1 christos This field stores the offset into .got2 used to initialise the
3186 1.1 christos GOT pointer reg. It will always be at least 32768. (Current
3187 1.1 christos gcc always uses an offset of 32768, but ld -r will pack .got2
3188 1.1 christos sections together resulting in larger offsets). */
3189 1.1 christos bfd_vma addend;
3190 1.1 christos
3191 1.1 christos /* The .got2 section. */
3192 1.1 christos asection *sec;
3193 1.1 christos
3194 1.1 christos /* PLT refcount or offset. */
3195 1.1 christos union
3196 1.1 christos {
3197 1.1 christos bfd_signed_vma refcount;
3198 1.1 christos bfd_vma offset;
3199 1.7 christos } plt;
3200 1.7 christos
3201 1.7 christos /* .glink stub offset. */
3202 1.1 christos bfd_vma glink_offset;
3203 1.1 christos };
3204 1.1 christos
3205 1.1 christos /* Of those relocs that might be copied as dynamic relocs, this
3206 1.1 christos function selects those that must be copied when linking a shared
3207 1.1 christos library or PIE, even when the symbol is local. */
3208 1.1 christos
3209 1.1 christos static int
3210 1.7 christos must_be_dyn_reloc (struct bfd_link_info *info,
3211 1.7 christos enum elf_ppc_reloc_type r_type)
3212 1.7 christos {
3213 1.7 christos switch (r_type)
3214 1.1 christos {
3215 1.1 christos default:
3216 1.1 christos /* Only relative relocs can be resolved when the object load
3217 1.1 christos address isn't fixed. DTPREL32 is excluded because the
3218 1.1 christos dynamic linker needs to differentiate global dynamic from
3219 1.1 christos local dynamic __tls_index pairs when PPC_OPT_TLS is set. */
3220 1.1 christos return 1;
3221 1.1 christos
3222 1.1 christos case R_PPC_REL24:
3223 1.1 christos case R_PPC_REL14:
3224 1.1 christos case R_PPC_REL14_BRTAKEN:
3225 1.1 christos case R_PPC_REL14_BRNTAKEN:
3226 1.1 christos case R_PPC_REL32:
3227 1.1 christos return 0;
3228 1.7 christos
3229 1.7 christos case R_PPC_TPREL32:
3230 1.7 christos case R_PPC_TPREL16:
3231 1.1 christos case R_PPC_TPREL16_LO:
3232 1.1 christos case R_PPC_TPREL16_HI:
3233 1.1 christos case R_PPC_TPREL16_HA:
3234 1.1 christos /* These relocations are relative but in a shared library the
3235 1.1 christos linker doesn't know the thread pointer base. */
3236 1.1 christos return bfd_link_dll (info);
3237 1.1 christos }
3238 1.1 christos }
3239 1.1 christos
3240 1.3 christos /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3241 1.3 christos copying dynamic variables from a shared lib into an app's dynbss
3242 1.3 christos section, and instead use a dynamic relocation to point into the
3243 1.3 christos shared lib. */
3244 1.3 christos #define ELIMINATE_COPY_RELOCS 1
3245 1.3 christos
3246 1.3 christos /* Used to track dynamic relocations for local symbols. */
3247 1.3 christos struct ppc_dyn_relocs
3248 1.3 christos {
3249 1.3 christos struct ppc_dyn_relocs *next;
3250 1.3 christos
3251 1.3 christos /* The input section of the reloc. */
3252 1.3 christos asection *sec;
3253 1.3 christos
3254 1.3 christos /* Total number of relocs copied for the input section. */
3255 1.1 christos unsigned int count : 31;
3256 1.1 christos
3257 1.1 christos /* Whether this entry is for STT_GNU_IFUNC symbols. */
3258 1.1 christos unsigned int ifunc : 1;
3259 1.1 christos };
3260 1.1 christos
3261 1.1 christos /* PPC ELF linker hash entry. */
3262 1.1 christos
3263 1.1 christos struct ppc_elf_link_hash_entry
3264 1.1 christos {
3265 1.1 christos struct elf_link_hash_entry elf;
3266 1.1 christos
3267 1.1 christos /* If this symbol is used in the linker created sections, the processor
3268 1.1 christos specific backend uses this field to map the field into the offset
3269 1.7 christos from the beginning of the section. */
3270 1.7 christos elf_linker_section_pointers_t *linker_section_pointer;
3271 1.7 christos
3272 1.7 christos /* Track dynamic relocs copied for this symbol. */
3273 1.7 christos struct elf_dyn_relocs *dyn_relocs;
3274 1.7 christos
3275 1.7 christos /* Contexts in which symbol is used in the GOT.
3276 1.7 christos Bits are or'd into the mask as the corresponding relocs are
3277 1.7 christos encountered during check_relocs, with TLS_TLS being set when any
3278 1.7 christos of the other TLS bits are set. tls_optimize clears bits when
3279 1.7 christos optimizing to indicate the corresponding GOT entry type is not
3280 1.7 christos needed. If set, TLS_TLS is never cleared. tls_optimize may also
3281 1.7 christos set TLS_TPRELGD when a GD reloc turns into a TPREL one. We use a
3282 1.7 christos separate flag rather than setting TPREL just for convenience in
3283 1.7 christos distinguishing the two cases.
3284 1.7 christos These flags are also kept for local symbols. */
3285 1.7 christos #define TLS_TLS 1 /* Any TLS reloc. */
3286 1.7 christos #define TLS_GD 2 /* GD reloc. */
3287 1.7 christos #define TLS_LD 4 /* LD reloc. */
3288 1.7 christos #define TLS_TPREL 8 /* TPREL reloc, => IE. */
3289 1.7 christos #define TLS_DTPREL 16 /* DTPREL reloc, => LD. */
3290 1.7 christos #define TLS_MARK 32 /* __tls_get_addr call marked. */
3291 1.7 christos #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3292 1.7 christos unsigned char tls_mask;
3293 1.1 christos
3294 1.1 christos /* The above field is also used to mark function symbols. In which
3295 1.1 christos case TLS_TLS will be 0. */
3296 1.3 christos #define PLT_IFUNC 2 /* STT_GNU_IFUNC. */
3297 1.3 christos #define PLT_KEEP 4 /* inline plt call requires plt entry. */
3298 1.3 christos #define NON_GOT 256 /* local symbol plt, not stored. */
3299 1.3 christos
3300 1.3 christos /* Nonzero if we have seen a small data relocation referring to this
3301 1.1 christos symbol. */
3302 1.1 christos unsigned char has_sda_refs : 1;
3303 1.1 christos
3304 1.1 christos /* Flag use of given relocations. */
3305 1.1 christos unsigned char has_addr16_ha : 1;
3306 1.1 christos unsigned char has_addr16_lo : 1;
3307 1.1 christos };
3308 1.1 christos
3309 1.1 christos #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3310 1.1 christos
3311 1.3 christos /* PPC ELF linker hash table. */
3312 1.3 christos
3313 1.3 christos struct ppc_elf_link_hash_table
3314 1.1 christos {
3315 1.1 christos struct elf_link_hash_table elf;
3316 1.1 christos
3317 1.1 christos /* Various options passed from the linker. */
3318 1.1 christos struct ppc_elf_params *params;
3319 1.1 christos
3320 1.1 christos /* Short-cuts to get to dynamic linker sections. */
3321 1.7 christos asection *glink;
3322 1.7 christos asection *dynsbss;
3323 1.1 christos asection *relsbss;
3324 1.1 christos elf_linker_section_t sdata[2];
3325 1.1 christos asection *sbss;
3326 1.1 christos asection *glink_eh_frame;
3327 1.1 christos asection *pltlocal;
3328 1.1 christos asection *relpltlocal;
3329 1.1 christos
3330 1.1 christos /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3331 1.1 christos asection *srelplt2;
3332 1.1 christos
3333 1.1 christos /* Shortcut to __tls_get_addr. */
3334 1.1 christos struct elf_link_hash_entry *tls_get_addr;
3335 1.1 christos
3336 1.1 christos /* The bfd that forced an old-style PLT. */
3337 1.1 christos bfd *old_bfd;
3338 1.1 christos
3339 1.1 christos /* TLS local dynamic got entry handling. */
3340 1.1 christos union {
3341 1.1 christos bfd_signed_vma refcount;
3342 1.1 christos bfd_vma offset;
3343 1.1 christos } tlsld_got;
3344 1.1 christos
3345 1.1 christos /* Offset of branch table to PltResolve function in glink. */
3346 1.1 christos bfd_vma glink_pltresolve;
3347 1.1 christos
3348 1.1 christos /* Size of reserved GOT entries. */
3349 1.1 christos unsigned int got_header_size;
3350 1.1 christos /* Non-zero if allocating the header left a gap. */
3351 1.1 christos unsigned int got_gap;
3352 1.1 christos
3353 1.7 christos /* The type of PLT we have chosen to use. */
3354 1.7 christos enum ppc_elf_plt_type plt_type;
3355 1.7 christos
3356 1.7 christos /* True if the target system is VxWorks. */
3357 1.7 christos unsigned int is_vxworks:1;
3358 1.7 christos
3359 1.7 christos /* Whether there exist local gnu indirect function resolvers,
3360 1.7 christos referenced by dynamic relocations. */
3361 1.7 christos unsigned int local_ifunc_resolver:1;
3362 1.7 christos unsigned int maybe_local_ifunc_resolver:1;
3363 1.7 christos
3364 1.1 christos /* Set if tls optimization is enabled. */
3365 1.1 christos unsigned int do_tls_opt:1;
3366 1.1 christos
3367 1.1 christos /* Set if inline plt calls should be converted to direct calls. */
3368 1.1 christos unsigned int can_convert_all_inline_plt:1;
3369 1.1 christos
3370 1.1 christos /* The size of PLT entries. */
3371 1.1 christos int plt_entry_size;
3372 1.1 christos /* The distance between adjacent PLT slots. */
3373 1.1 christos int plt_slot_size;
3374 1.1 christos /* The size of the first PLT entry. */
3375 1.1 christos int plt_initial_entry_size;
3376 1.1 christos
3377 1.1 christos /* Small local sym cache. */
3378 1.1 christos struct sym_cache sym_cache;
3379 1.1 christos };
3380 1.1 christos
3381 1.1 christos /* Rename some of the generic section flags to better document how they
3382 1.1 christos are used for ppc32. The flags are only valid for ppc32 elf objects. */
3383 1.1 christos
3384 1.7 christos /* Nonzero if this section has TLS related relocations. */
3385 1.7 christos #define has_tls_reloc sec_flg0
3386 1.7 christos
3387 1.1 christos /* Nonzero if this section has a call to __tls_get_addr. */
3388 1.1 christos #define has_tls_get_addr_call sec_flg1
3389 1.1 christos
3390 1.1 christos /* Flag set when PLTCALL relocs are detected. */
3391 1.1 christos #define has_pltcall sec_flg2
3392 1.1 christos
3393 1.1 christos /* Get the PPC ELF linker hash table from a link_info structure. */
3394 1.1 christos
3395 1.1 christos #define ppc_elf_hash_table(p) \
3396 1.1 christos (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3397 1.1 christos == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3398 1.1 christos
3399 1.1 christos /* Create an entry in a PPC ELF linker hash table. */
3400 1.1 christos
3401 1.1 christos static struct bfd_hash_entry *
3402 1.1 christos ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3403 1.1 christos struct bfd_hash_table *table,
3404 1.1 christos const char *string)
3405 1.1 christos {
3406 1.1 christos /* Allocate the structure if it has not already been allocated by a
3407 1.1 christos subclass. */
3408 1.1 christos if (entry == NULL)
3409 1.1 christos {
3410 1.1 christos entry = bfd_hash_allocate (table,
3411 1.1 christos sizeof (struct ppc_elf_link_hash_entry));
3412 1.1 christos if (entry == NULL)
3413 1.1 christos return entry;
3414 1.1 christos }
3415 1.1 christos
3416 1.1 christos /* Call the allocation method of the superclass. */
3417 1.1 christos entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3418 1.1 christos if (entry != NULL)
3419 1.1 christos {
3420 1.1 christos ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3421 1.1 christos ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3422 1.1 christos ppc_elf_hash_entry (entry)->tls_mask = 0;
3423 1.1 christos ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3424 1.1 christos }
3425 1.1 christos
3426 1.1 christos return entry;
3427 1.1 christos }
3428 1.1 christos
3429 1.7 christos /* Create a PPC ELF linker hash table. */
3430 1.7 christos
3431 1.1 christos static struct bfd_link_hash_table *
3432 1.1 christos ppc_elf_link_hash_table_create (bfd *abfd)
3433 1.1 christos {
3434 1.1 christos struct ppc_elf_link_hash_table *ret;
3435 1.1 christos static struct ppc_elf_params default_params
3436 1.1 christos = { PLT_OLD, 0, 0, 1, 0, 0, 12, 0, 0, 0 };
3437 1.1 christos
3438 1.1 christos ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3439 1.1 christos if (ret == NULL)
3440 1.1 christos return NULL;
3441 1.1 christos
3442 1.1 christos if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3443 1.1 christos ppc_elf_link_hash_newfunc,
3444 1.1 christos sizeof (struct ppc_elf_link_hash_entry),
3445 1.1 christos PPC32_ELF_DATA))
3446 1.1 christos {
3447 1.1 christos free (ret);
3448 1.1 christos return NULL;
3449 1.1 christos }
3450 1.3 christos
3451 1.3 christos ret->elf.init_plt_refcount.refcount = 0;
3452 1.1 christos ret->elf.init_plt_refcount.glist = NULL;
3453 1.1 christos ret->elf.init_plt_offset.offset = 0;
3454 1.1 christos ret->elf.init_plt_offset.glist = NULL;
3455 1.1 christos
3456 1.1 christos ret->params = &default_params;
3457 1.1 christos
3458 1.1 christos ret->sdata[0].name = ".sdata";
3459 1.1 christos ret->sdata[0].sym_name = "_SDA_BASE_";
3460 1.1 christos ret->sdata[0].bss_name = ".sbss";
3461 1.1 christos
3462 1.1 christos ret->sdata[1].name = ".sdata2";
3463 1.1 christos ret->sdata[1].sym_name = "_SDA2_BASE_";
3464 1.1 christos ret->sdata[1].bss_name = ".sbss2";
3465 1.1 christos
3466 1.1 christos ret->plt_entry_size = 12;
3467 1.3 christos ret->plt_slot_size = 8;
3468 1.3 christos ret->plt_initial_entry_size = 72;
3469 1.3 christos
3470 1.3 christos return &ret->elf.root;
3471 1.3 christos }
3472 1.3 christos
3473 1.3 christos /* Hook linker params into hash table. */
3474 1.3 christos
3475 1.3 christos void
3476 1.7 christos ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3477 1.3 christos {
3478 1.3 christos struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3479 1.1 christos
3480 1.1 christos if (htab)
3481 1.1 christos htab->params = params;
3482 1.1 christos params->pagesize_p2 = bfd_log2 (params->pagesize);
3483 1.1 christos }
3484 1.1 christos
3485 1.1 christos /* Create .got and the related sections. */
3486 1.1 christos
3487 1.1 christos static bfd_boolean
3488 1.1 christos ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3489 1.1 christos {
3490 1.7 christos struct ppc_elf_link_hash_table *htab;
3491 1.1 christos
3492 1.1 christos if (!_bfd_elf_create_got_section (abfd, info))
3493 1.1 christos return FALSE;
3494 1.7 christos
3495 1.7 christos htab = ppc_elf_hash_table (info);
3496 1.7 christos if (!htab->is_vxworks)
3497 1.1 christos {
3498 1.1 christos /* The powerpc .got has a blrl instruction in it. Mark it
3499 1.1 christos executable. */
3500 1.1 christos flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3501 1.1 christos | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3502 1.1 christos if (!bfd_set_section_flags (abfd, htab->elf.sgot, flags))
3503 1.3 christos return FALSE;
3504 1.3 christos }
3505 1.3 christos
3506 1.3 christos return TRUE;
3507 1.3 christos }
3508 1.3 christos
3509 1.3 christos /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3510 1.3 christos R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3511 1.3 christos and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3512 1.3 christos
3513 1.3 christos static bfd_boolean
3514 1.3 christos ppc_elf_create_linker_section (bfd *abfd,
3515 1.3 christos struct bfd_link_info *info,
3516 1.3 christos flagword flags,
3517 1.3 christos elf_linker_section_t *lsect)
3518 1.3 christos {
3519 1.3 christos asection *s;
3520 1.3 christos
3521 1.3 christos flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3522 1.3 christos | SEC_LINKER_CREATED);
3523 1.3 christos
3524 1.3 christos s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3525 1.3 christos if (s == NULL)
3526 1.3 christos return FALSE;
3527 1.3 christos lsect->section = s;
3528 1.3 christos
3529 1.3 christos /* Define the sym on the first section of this name. */
3530 1.3 christos s = bfd_get_section_by_name (abfd, lsect->name);
3531 1.3 christos
3532 1.3 christos lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3533 1.1 christos if (lsect->sym == NULL)
3534 1.1 christos return FALSE;
3535 1.1 christos lsect->sym->root.u.def.value = 0x8000;
3536 1.1 christos return TRUE;
3537 1.1 christos }
3538 1.1 christos
3539 1.7 christos static bfd_boolean
3540 1.1 christos ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3541 1.1 christos {
3542 1.1 christos struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3543 1.1 christos asection *s;
3544 1.1 christos flagword flags;
3545 1.7 christos int p2align;
3546 1.7 christos
3547 1.7 christos flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3548 1.1 christos | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3549 1.7 christos s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3550 1.1 christos htab->glink = s;
3551 1.1 christos p2align = htab->params->ppc476_workaround ? 6 : 4;
3552 1.1 christos if (p2align < htab->params->plt_stub_align)
3553 1.1 christos p2align = htab->params->plt_stub_align;
3554 1.1 christos if (s == NULL
3555 1.1 christos || !bfd_set_section_alignment (abfd, s, p2align))
3556 1.1 christos return FALSE;
3557 1.1 christos
3558 1.1 christos if (!info->no_ld_generated_unwind_info)
3559 1.1 christos {
3560 1.1 christos flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3561 1.1 christos | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3562 1.1 christos s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3563 1.1 christos htab->glink_eh_frame = s;
3564 1.1 christos if (s == NULL
3565 1.7 christos || !bfd_set_section_alignment (abfd, s, 2))
3566 1.1 christos return FALSE;
3567 1.1 christos }
3568 1.1 christos
3569 1.1 christos flags = SEC_ALLOC | SEC_LINKER_CREATED;
3570 1.1 christos s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3571 1.1 christos htab->elf.iplt = s;
3572 1.1 christos if (s == NULL
3573 1.7 christos || !bfd_set_section_alignment (abfd, s, 4))
3574 1.1 christos return FALSE;
3575 1.1 christos
3576 1.1 christos flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3577 1.3 christos | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3578 1.7 christos s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3579 1.7 christos htab->elf.irelplt = s;
3580 1.7 christos if (s == NULL
3581 1.7 christos || ! bfd_set_section_alignment (abfd, s, 2))
3582 1.7 christos return FALSE;
3583 1.7 christos
3584 1.7 christos /* Local plt entries. */
3585 1.7 christos flags = (SEC_ALLOC | SEC_LOAD
3586 1.7 christos | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3587 1.7 christos htab->pltlocal = bfd_make_section_anyway_with_flags (abfd, ".branch_lt",
3588 1.7 christos flags);
3589 1.7 christos if (htab->pltlocal == NULL
3590 1.7 christos || ! bfd_set_section_alignment (abfd, htab->pltlocal, 2))
3591 1.7 christos return FALSE;
3592 1.7 christos
3593 1.7 christos if (bfd_link_pic (info))
3594 1.7 christos {
3595 1.7 christos flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3596 1.7 christos | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3597 1.7 christos htab->relpltlocal
3598 1.3 christos = bfd_make_section_anyway_with_flags (abfd, ".rela.branch_lt", flags);
3599 1.3 christos if (htab->relpltlocal == NULL
3600 1.3 christos || ! bfd_set_section_alignment (abfd, htab->relpltlocal, 2))
3601 1.3 christos return FALSE;
3602 1.3 christos }
3603 1.3 christos
3604 1.3 christos if (!ppc_elf_create_linker_section (abfd, info, 0,
3605 1.3 christos &htab->sdata[0]))
3606 1.1 christos return FALSE;
3607 1.1 christos
3608 1.1 christos if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3609 1.1 christos &htab->sdata[1]))
3610 1.1 christos return FALSE;
3611 1.1 christos
3612 1.1 christos return TRUE;
3613 1.1 christos }
3614 1.1 christos
3615 1.1 christos /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3616 1.1 christos to output sections (just like _bfd_elf_create_dynamic_sections has
3617 1.1 christos to create .dynbss and .rela.bss). */
3618 1.1 christos
3619 1.1 christos static bfd_boolean
3620 1.1 christos ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3621 1.1 christos {
3622 1.7 christos struct ppc_elf_link_hash_table *htab;
3623 1.1 christos asection *s;
3624 1.1 christos flagword flags;
3625 1.1 christos
3626 1.1 christos htab = ppc_elf_hash_table (info);
3627 1.1 christos
3628 1.1 christos if (htab->elf.sgot == NULL
3629 1.1 christos && !ppc_elf_create_got (abfd, info))
3630 1.1 christos return FALSE;
3631 1.1 christos
3632 1.1 christos if (!_bfd_elf_create_dynamic_sections (abfd, info))
3633 1.1 christos return FALSE;
3634 1.1 christos
3635 1.1 christos if (htab->glink == NULL
3636 1.1 christos && !ppc_elf_create_glink (abfd, info))
3637 1.1 christos return FALSE;
3638 1.1 christos
3639 1.3 christos s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3640 1.1 christos SEC_ALLOC | SEC_LINKER_CREATED);
3641 1.1 christos htab->dynsbss = s;
3642 1.1 christos if (s == NULL)
3643 1.1 christos return FALSE;
3644 1.1 christos
3645 1.1 christos if (! bfd_link_pic (info))
3646 1.1 christos {
3647 1.1 christos flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3648 1.1 christos | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3649 1.1 christos s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3650 1.1 christos htab->relsbss = s;
3651 1.1 christos if (s == NULL
3652 1.1 christos || ! bfd_set_section_alignment (abfd, s, 2))
3653 1.1 christos return FALSE;
3654 1.7 christos }
3655 1.1 christos
3656 1.1 christos if (htab->is_vxworks
3657 1.1 christos && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3658 1.1 christos return FALSE;
3659 1.1 christos
3660 1.1 christos s = htab->elf.splt;
3661 1.1 christos flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3662 1.1 christos if (htab->plt_type == PLT_VXWORKS)
3663 1.1 christos /* The VxWorks PLT is a loaded section with contents. */
3664 1.1 christos flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3665 1.1 christos return bfd_set_section_flags (abfd, s, flags);
3666 1.1 christos }
3667 1.1 christos
3668 1.1 christos /* Copy the extra info we tack onto an elf_link_hash_entry. */
3669 1.1 christos
3670 1.1 christos static void
3671 1.1 christos ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3672 1.1 christos struct elf_link_hash_entry *dir,
3673 1.1 christos struct elf_link_hash_entry *ind)
3674 1.1 christos {
3675 1.1 christos struct ppc_elf_link_hash_entry *edir, *eind;
3676 1.1 christos
3677 1.7 christos edir = (struct ppc_elf_link_hash_entry *) dir;
3678 1.7 christos eind = (struct ppc_elf_link_hash_entry *) ind;
3679 1.1 christos
3680 1.1 christos edir->tls_mask |= eind->tls_mask;
3681 1.7 christos edir->has_sda_refs |= eind->has_sda_refs;
3682 1.1 christos
3683 1.1 christos if (edir->elf.versioned != versioned_hidden)
3684 1.1 christos edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3685 1.7 christos edir->elf.ref_regular |= eind->elf.ref_regular;
3686 1.7 christos edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3687 1.7 christos edir->elf.non_got_ref |= eind->elf.non_got_ref;
3688 1.7 christos edir->elf.needs_plt |= eind->elf.needs_plt;
3689 1.1 christos edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3690 1.1 christos
3691 1.1 christos /* If we were called to copy over info for a weak sym, that's all. */
3692 1.1 christos if (eind->elf.root.type != bfd_link_hash_indirect)
3693 1.1 christos return;
3694 1.1 christos
3695 1.1 christos if (eind->dyn_relocs != NULL)
3696 1.1 christos {
3697 1.1 christos if (edir->dyn_relocs != NULL)
3698 1.1 christos {
3699 1.1 christos struct elf_dyn_relocs **pp;
3700 1.1 christos struct elf_dyn_relocs *p;
3701 1.1 christos
3702 1.1 christos /* Add reloc counts against the indirect sym to the direct sym
3703 1.1 christos list. Merge any entries against the same section. */
3704 1.1 christos for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3705 1.1 christos {
3706 1.1 christos struct elf_dyn_relocs *q;
3707 1.1 christos
3708 1.1 christos for (q = edir->dyn_relocs; q != NULL; q = q->next)
3709 1.1 christos if (q->sec == p->sec)
3710 1.1 christos {
3711 1.1 christos q->pc_count += p->pc_count;
3712 1.1 christos q->count += p->count;
3713 1.1 christos *pp = p->next;
3714 1.1 christos break;
3715 1.1 christos }
3716 1.1 christos if (q == NULL)
3717 1.1 christos pp = &p->next;
3718 1.1 christos }
3719 1.1 christos *pp = edir->dyn_relocs;
3720 1.1 christos }
3721 1.1 christos
3722 1.1 christos edir->dyn_relocs = eind->dyn_relocs;
3723 1.1 christos eind->dyn_relocs = NULL;
3724 1.1 christos }
3725 1.1 christos
3726 1.1 christos /* Copy over the GOT refcount entries that we may have already seen to
3727 1.1 christos the symbol which just became indirect. */
3728 1.1 christos edir->elf.got.refcount += eind->elf.got.refcount;
3729 1.1 christos eind->elf.got.refcount = 0;
3730 1.1 christos
3731 1.1 christos /* And plt entries. */
3732 1.1 christos if (eind->elf.plt.plist != NULL)
3733 1.1 christos {
3734 1.1 christos if (edir->elf.plt.plist != NULL)
3735 1.1 christos {
3736 1.1 christos struct plt_entry **entp;
3737 1.1 christos struct plt_entry *ent;
3738 1.1 christos
3739 1.1 christos for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3740 1.1 christos {
3741 1.1 christos struct plt_entry *dent;
3742 1.1 christos
3743 1.1 christos for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3744 1.1 christos if (dent->sec == ent->sec && dent->addend == ent->addend)
3745 1.1 christos {
3746 1.1 christos dent->plt.refcount += ent->plt.refcount;
3747 1.1 christos *entp = ent->next;
3748 1.1 christos break;
3749 1.1 christos }
3750 1.1 christos if (dent == NULL)
3751 1.1 christos entp = &ent->next;
3752 1.1 christos }
3753 1.1 christos *entp = edir->elf.plt.plist;
3754 1.1 christos }
3755 1.1 christos
3756 1.1 christos edir->elf.plt.plist = eind->elf.plt.plist;
3757 1.1 christos eind->elf.plt.plist = NULL;
3758 1.1 christos }
3759 1.1 christos
3760 1.1 christos if (eind->elf.dynindx != -1)
3761 1.1 christos {
3762 1.1 christos if (edir->elf.dynindx != -1)
3763 1.1 christos _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3764 1.1 christos edir->elf.dynstr_index);
3765 1.1 christos edir->elf.dynindx = eind->elf.dynindx;
3766 1.1 christos edir->elf.dynstr_index = eind->elf.dynstr_index;
3767 1.1 christos eind->elf.dynindx = -1;
3768 1.1 christos eind->elf.dynstr_index = 0;
3769 1.1 christos }
3770 1.1 christos }
3771 1.1 christos
3772 1.1 christos /* Hook called by the linker routine which adds symbols from an object
3773 1.1 christos file. We use it to put .comm items in .sbss, and not .bss. */
3774 1.1 christos
3775 1.1 christos static bfd_boolean
3776 1.1 christos ppc_elf_add_symbol_hook (bfd *abfd,
3777 1.1 christos struct bfd_link_info *info,
3778 1.1 christos Elf_Internal_Sym *sym,
3779 1.3 christos const char **namep ATTRIBUTE_UNUSED,
3780 1.1 christos flagword *flagsp ATTRIBUTE_UNUSED,
3781 1.1 christos asection **secp,
3782 1.1 christos bfd_vma *valp)
3783 1.1 christos {
3784 1.1 christos if (sym->st_shndx == SHN_COMMON
3785 1.1 christos && !bfd_link_relocatable (info)
3786 1.1 christos && is_ppc_elf (info->output_bfd)
3787 1.1 christos && sym->st_size <= elf_gp_size (abfd))
3788 1.1 christos {
3789 1.1 christos /* Common symbols less than or equal to -G nn bytes are automatically
3790 1.1 christos put into .sbss. */
3791 1.1 christos struct ppc_elf_link_hash_table *htab;
3792 1.1 christos
3793 1.1 christos htab = ppc_elf_hash_table (info);
3794 1.1 christos if (htab->sbss == NULL)
3795 1.1 christos {
3796 1.1 christos flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3797 1.1 christos
3798 1.1 christos if (!htab->elf.dynobj)
3799 1.1 christos htab->elf.dynobj = abfd;
3800 1.1 christos
3801 1.1 christos htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3802 1.1 christos ".sbss",
3803 1.1 christos flags);
3804 1.1 christos if (htab->sbss == NULL)
3805 1.1 christos return FALSE;
3806 1.1 christos }
3807 1.1 christos
3808 1.1 christos *secp = htab->sbss;
3809 1.1 christos *valp = sym->st_size;
3810 1.1 christos }
3811 1.1 christos
3812 1.1 christos return TRUE;
3813 1.1 christos }
3814 1.1 christos
3815 1.1 christos /* Find a linker generated pointer with a given addend and type. */
3817 1.1 christos
3818 1.1 christos static elf_linker_section_pointers_t *
3819 1.1 christos elf_find_pointer_linker_section
3820 1.1 christos (elf_linker_section_pointers_t *linker_pointers,
3821 1.1 christos bfd_vma addend,
3822 1.1 christos elf_linker_section_t *lsect)
3823 1.1 christos {
3824 1.1 christos for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3825 1.1 christos if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3826 1.1 christos return linker_pointers;
3827 1.3 christos
3828 1.3 christos return NULL;
3829 1.3 christos }
3830 1.3 christos
3831 1.1 christos /* Allocate a pointer to live in a linker created section. */
3832 1.1 christos
3833 1.1 christos static bfd_boolean
3834 1.1 christos elf_allocate_pointer_linker_section (bfd *abfd,
3835 1.1 christos elf_linker_section_t *lsect,
3836 1.1 christos struct elf_link_hash_entry *h,
3837 1.1 christos const Elf_Internal_Rela *rel)
3838 1.1 christos {
3839 1.1 christos elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3840 1.1 christos elf_linker_section_pointers_t *linker_section_ptr;
3841 1.1 christos unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3842 1.1 christos bfd_size_type amt;
3843 1.1 christos
3844 1.1 christos BFD_ASSERT (lsect != NULL);
3845 1.1 christos
3846 1.1 christos /* Is this a global symbol? */
3847 1.1 christos if (h != NULL)
3848 1.1 christos {
3849 1.1 christos struct ppc_elf_link_hash_entry *eh;
3850 1.1 christos
3851 1.1 christos /* Has this symbol already been allocated? If so, our work is done. */
3852 1.1 christos eh = (struct ppc_elf_link_hash_entry *) h;
3853 1.1 christos if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3854 1.1 christos rel->r_addend,
3855 1.1 christos lsect))
3856 1.1 christos return TRUE;
3857 1.1 christos
3858 1.1 christos ptr_linker_section_ptr = &eh->linker_section_pointer;
3859 1.1 christos }
3860 1.1 christos else
3861 1.1 christos {
3862 1.1 christos BFD_ASSERT (is_ppc_elf (abfd));
3863 1.1 christos
3864 1.1 christos /* Allocation of a pointer to a local symbol. */
3865 1.1 christos elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3866 1.1 christos
3867 1.1 christos /* Allocate a table to hold the local symbols if first time. */
3868 1.1 christos if (!ptr)
3869 1.1 christos {
3870 1.1 christos unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3871 1.1 christos
3872 1.1 christos amt = num_symbols;
3873 1.1 christos amt *= sizeof (elf_linker_section_pointers_t *);
3874 1.1 christos ptr = bfd_zalloc (abfd, amt);
3875 1.1 christos
3876 1.1 christos if (!ptr)
3877 1.1 christos return FALSE;
3878 1.1 christos
3879 1.1 christos elf_local_ptr_offsets (abfd) = ptr;
3880 1.1 christos }
3881 1.1 christos
3882 1.1 christos /* Has this symbol already been allocated? If so, our work is done. */
3883 1.1 christos if (elf_find_pointer_linker_section (ptr[r_symndx],
3884 1.1 christos rel->r_addend,
3885 1.1 christos lsect))
3886 1.1 christos return TRUE;
3887 1.1 christos
3888 1.1 christos ptr_linker_section_ptr = &ptr[r_symndx];
3889 1.1 christos }
3890 1.1 christos
3891 1.1 christos /* Allocate space for a pointer in the linker section, and allocate
3892 1.1 christos a new pointer record from internal memory. */
3893 1.1 christos BFD_ASSERT (ptr_linker_section_ptr != NULL);
3894 1.1 christos amt = sizeof (elf_linker_section_pointers_t);
3895 1.1 christos linker_section_ptr = bfd_alloc (abfd, amt);
3896 1.1 christos
3897 1.1 christos if (!linker_section_ptr)
3898 1.3 christos return FALSE;
3899 1.3 christos
3900 1.1 christos linker_section_ptr->next = *ptr_linker_section_ptr;
3901 1.1 christos linker_section_ptr->addend = rel->r_addend;
3902 1.1 christos linker_section_ptr->lsect = lsect;
3903 1.1 christos *ptr_linker_section_ptr = linker_section_ptr;
3904 1.1 christos
3905 1.1 christos if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3906 1.1 christos return FALSE;
3907 1.1 christos linker_section_ptr->offset = lsect->section->size;
3908 1.1 christos lsect->section->size += 4;
3909 1.1 christos
3910 1.1 christos #ifdef DEBUG
3911 1.1 christos fprintf (stderr,
3912 1.1 christos "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3913 1.1 christos lsect->name, (long) linker_section_ptr->offset,
3914 1.1 christos (long) lsect->section->size);
3915 1.1 christos #endif
3916 1.1 christos
3917 1.1 christos return TRUE;
3918 1.1 christos }
3919 1.1 christos
3920 1.1 christos static struct plt_entry **
3921 1.7 christos update_local_sym_info (bfd *abfd,
3922 1.1 christos Elf_Internal_Shdr *symtab_hdr,
3923 1.1 christos unsigned long r_symndx,
3924 1.1 christos int tls_type)
3925 1.1 christos {
3926 1.1 christos bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3927 1.1 christos struct plt_entry **local_plt;
3928 1.1 christos unsigned char *local_got_tls_masks;
3929 1.1 christos
3930 1.1 christos if (local_got_refcounts == NULL)
3931 1.1 christos {
3932 1.1 christos bfd_size_type size = symtab_hdr->sh_info;
3933 1.1 christos
3934 1.1 christos size *= (sizeof (*local_got_refcounts)
3935 1.1 christos + sizeof (*local_plt)
3936 1.1 christos + sizeof (*local_got_tls_masks));
3937 1.7 christos local_got_refcounts = bfd_zalloc (abfd, size);
3938 1.7 christos if (local_got_refcounts == NULL)
3939 1.7 christos return NULL;
3940 1.1 christos elf_local_got_refcounts (abfd) = local_got_refcounts;
3941 1.1 christos }
3942 1.1 christos
3943 1.1 christos local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3944 1.1 christos local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
3945 1.1 christos local_got_tls_masks[r_symndx] |= tls_type & 0xff;
3946 1.1 christos if ((tls_type & NON_GOT) == 0)
3947 1.1 christos local_got_refcounts[r_symndx] += 1;
3948 1.1 christos return local_plt + r_symndx;
3949 1.1 christos }
3950 1.1 christos
3951 1.1 christos static bfd_boolean
3952 1.1 christos update_plt_info (bfd *abfd, struct plt_entry **plist,
3953 1.1 christos asection *sec, bfd_vma addend)
3954 1.1 christos {
3955 1.1 christos struct plt_entry *ent;
3956 1.1 christos
3957 1.1 christos if (addend < 32768)
3958 1.1 christos sec = NULL;
3959 1.1 christos for (ent = *plist; ent != NULL; ent = ent->next)
3960 1.1 christos if (ent->sec == sec && ent->addend == addend)
3961 1.1 christos break;
3962 1.1 christos if (ent == NULL)
3963 1.1 christos {
3964 1.1 christos bfd_size_type amt = sizeof (*ent);
3965 1.1 christos ent = bfd_alloc (abfd, amt);
3966 1.1 christos if (ent == NULL)
3967 1.1 christos return FALSE;
3968 1.1 christos ent->next = *plist;
3969 1.1 christos ent->sec = sec;
3970 1.1 christos ent->addend = addend;
3971 1.1 christos ent->plt.refcount = 0;
3972 1.1 christos *plist = ent;
3973 1.1 christos }
3974 1.1 christos ent->plt.refcount += 1;
3975 1.1 christos return TRUE;
3976 1.1 christos }
3977 1.1 christos
3978 1.1 christos static struct plt_entry *
3979 1.1 christos find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3980 1.1 christos {
3981 1.1 christos struct plt_entry *ent;
3982 1.1 christos
3983 1.1 christos if (addend < 32768)
3984 1.1 christos sec = NULL;
3985 1.1 christos for (ent = *plist; ent != NULL; ent = ent->next)
3986 1.1 christos if (ent->sec == sec && ent->addend == addend)
3987 1.1 christos break;
3988 1.1 christos return ent;
3989 1.1 christos }
3990 1.1 christos
3991 1.1 christos static bfd_boolean
3992 1.1 christos is_branch_reloc (enum elf_ppc_reloc_type r_type)
3993 1.1 christos {
3994 1.1 christos return (r_type == R_PPC_PLTREL24
3995 1.1 christos || r_type == R_PPC_LOCAL24PC
3996 1.7 christos || r_type == R_PPC_REL24
3997 1.7 christos || r_type == R_PPC_REL14
3998 1.7 christos || r_type == R_PPC_REL14_BRTAKEN
3999 1.7 christos || r_type == R_PPC_REL14_BRNTAKEN
4000 1.7 christos || r_type == R_PPC_ADDR24
4001 1.7 christos || r_type == R_PPC_ADDR14
4002 1.7 christos || r_type == R_PPC_ADDR14_BRTAKEN
4003 1.7 christos || r_type == R_PPC_ADDR14_BRNTAKEN
4004 1.7 christos || r_type == R_PPC_VLE_REL24);
4005 1.7 christos }
4006 1.7 christos
4007 1.7 christos /* Relocs on inline plt call sequence insns prior to the call. */
4008 1.7 christos
4009 1.1 christos static bfd_boolean
4010 1.1 christos is_plt_seq_reloc (enum elf_ppc_reloc_type r_type)
4011 1.1 christos {
4012 1.1 christos return (r_type == R_PPC_PLT16_HA
4013 1.1 christos || r_type == R_PPC_PLT16_HI
4014 1.7 christos || r_type == R_PPC_PLT16_LO
4015 1.7 christos || r_type == R_PPC_PLTSEQ);
4016 1.7 christos }
4017 1.1 christos
4018 1.1 christos static void
4019 1.1 christos bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
4020 1.1 christos {
4021 1.1 christos _bfd_error_handler
4022 1.1 christos /* xgettext:c-format */
4023 1.1 christos (_("%pB: relocation %s cannot be used when making a shared object"),
4024 1.1 christos abfd,
4025 1.1 christos ppc_elf_howto_table[r_type]->name);
4026 1.1 christos bfd_set_error (bfd_error_bad_value);
4027 1.1 christos }
4028 1.1 christos
4029 1.1 christos /* Look through the relocs for a section during the first phase, and
4030 1.1 christos allocate space in the global offset table or procedure linkage
4031 1.1 christos table. */
4032 1.1 christos
4033 1.1 christos static bfd_boolean
4034 1.1 christos ppc_elf_check_relocs (bfd *abfd,
4035 1.1 christos struct bfd_link_info *info,
4036 1.1 christos asection *sec,
4037 1.1 christos const Elf_Internal_Rela *relocs)
4038 1.1 christos {
4039 1.1 christos struct ppc_elf_link_hash_table *htab;
4040 1.3 christos Elf_Internal_Shdr *symtab_hdr;
4041 1.1 christos struct elf_link_hash_entry **sym_hashes;
4042 1.1 christos const Elf_Internal_Rela *rel;
4043 1.1 christos const Elf_Internal_Rela *rel_end;
4044 1.1 christos asection *got2, *sreloc;
4045 1.1 christos struct elf_link_hash_entry *tga;
4046 1.1 christos
4047 1.1 christos if (bfd_link_relocatable (info))
4048 1.1 christos return TRUE;
4049 1.1 christos
4050 1.1 christos /* Don't do anything special with non-loaded, non-alloced sections.
4051 1.1 christos In particular, any relocs in such sections should not affect GOT
4052 1.1 christos and PLT reference counting (ie. we don't allow them to create GOT
4053 1.7 christos or PLT entries), there's no possibility or desire to optimize TLS
4054 1.1 christos relocs, and there's not much point in propagating relocs to shared
4055 1.1 christos libs that the dynamic linker won't relocate. */
4056 1.1 christos if ((sec->flags & SEC_ALLOC) == 0)
4057 1.1 christos return TRUE;
4058 1.1 christos
4059 1.1 christos #ifdef DEBUG
4060 1.1 christos _bfd_error_handler ("ppc_elf_check_relocs called for section %pA in %pB",
4061 1.1 christos sec, abfd);
4062 1.1 christos #endif
4063 1.1 christos
4064 1.1 christos BFD_ASSERT (is_ppc_elf (abfd));
4065 1.1 christos
4066 1.1 christos /* Initialize howto table if not already done. */
4067 1.1 christos if (!ppc_elf_howto_table[R_PPC_ADDR32])
4068 1.1 christos ppc_elf_howto_init ();
4069 1.1 christos
4070 1.1 christos htab = ppc_elf_hash_table (info);
4071 1.1 christos if (htab->glink == NULL)
4072 1.1 christos {
4073 1.1 christos if (htab->elf.dynobj == NULL)
4074 1.1 christos htab->elf.dynobj = abfd;
4075 1.1 christos if (!ppc_elf_create_glink (htab->elf.dynobj, info))
4076 1.1 christos return FALSE;
4077 1.1 christos }
4078 1.1 christos tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4079 1.1 christos FALSE, FALSE, TRUE);
4080 1.1 christos symtab_hdr = &elf_symtab_hdr (abfd);
4081 1.1 christos sym_hashes = elf_sym_hashes (abfd);
4082 1.1 christos got2 = bfd_get_section_by_name (abfd, ".got2");
4083 1.1 christos sreloc = NULL;
4084 1.1 christos
4085 1.3 christos rel_end = relocs + sec->reloc_count;
4086 1.7 christos for (rel = relocs; rel < rel_end; rel++)
4087 1.7 christos {
4088 1.1 christos unsigned long r_symndx;
4089 1.1 christos enum elf_ppc_reloc_type r_type;
4090 1.1 christos struct elf_link_hash_entry *h;
4091 1.1 christos int tls_type;
4092 1.1 christos struct plt_entry **ifunc;
4093 1.1 christos struct plt_entry **pltent;
4094 1.1 christos bfd_vma addend;
4095 1.1 christos
4096 1.1 christos r_symndx = ELF32_R_SYM (rel->r_info);
4097 1.1 christos if (r_symndx < symtab_hdr->sh_info)
4098 1.1 christos h = NULL;
4099 1.1 christos else
4100 1.1 christos {
4101 1.1 christos h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4102 1.1 christos while (h->root.type == bfd_link_hash_indirect
4103 1.1 christos || h->root.type == bfd_link_hash_warning)
4104 1.7 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
4105 1.1 christos }
4106 1.1 christos
4107 1.1 christos /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4108 1.1 christos This shows up in particular in an R_PPC_ADDR32 in the eabi
4109 1.1 christos startup code. */
4110 1.1 christos if (h != NULL
4111 1.1 christos && htab->elf.sgot == NULL
4112 1.1 christos && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
4113 1.1 christos {
4114 1.1 christos if (htab->elf.dynobj == NULL)
4115 1.1 christos htab->elf.dynobj = abfd;
4116 1.3 christos if (!ppc_elf_create_got (htab->elf.dynobj, info))
4117 1.1 christos return FALSE;
4118 1.1 christos BFD_ASSERT (h == htab->elf.hgot);
4119 1.1 christos }
4120 1.1 christos
4121 1.1 christos tls_type = 0;
4122 1.1 christos r_type = ELF32_R_TYPE (rel->r_info);
4123 1.1 christos ifunc = NULL;
4124 1.3 christos if (h == NULL && !htab->is_vxworks)
4125 1.1 christos {
4126 1.3 christos Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4127 1.1 christos abfd, r_symndx);
4128 1.7 christos if (isym == NULL)
4129 1.1 christos return FALSE;
4130 1.1 christos
4131 1.1 christos if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4132 1.1 christos {
4133 1.1 christos /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4134 1.1 christos ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4135 1.3 christos NON_GOT | PLT_IFUNC);
4136 1.7 christos if (ifunc == NULL)
4137 1.7 christos return FALSE;
4138 1.7 christos
4139 1.7 christos /* STT_GNU_IFUNC symbols must have a PLT entry;
4140 1.1 christos In a non-pie executable even when there are
4141 1.7 christos no plt calls. */
4142 1.3 christos if (!bfd_link_pic (info)
4143 1.7 christos || is_branch_reloc (r_type)
4144 1.7 christos || r_type == R_PPC_PLT16_LO
4145 1.7 christos || r_type == R_PPC_PLT16_HI
4146 1.7 christos || r_type == R_PPC_PLT16_HA)
4147 1.7 christos {
4148 1.7 christos addend = 0;
4149 1.7 christos if (r_type == R_PPC_PLTREL24)
4150 1.3 christos ppc_elf_tdata (abfd)->makes_plt_call = 1;
4151 1.3 christos if (bfd_link_pic (info)
4152 1.1 christos && (r_type == R_PPC_PLTREL24
4153 1.1 christos || r_type == R_PPC_PLT16_LO
4154 1.1 christos || r_type == R_PPC_PLT16_HI
4155 1.1 christos || r_type == R_PPC_PLT16_HA))
4156 1.1 christos addend = rel->r_addend;
4157 1.1 christos if (!update_plt_info (abfd, ifunc, got2, addend))
4158 1.1 christos return FALSE;
4159 1.1 christos }
4160 1.1 christos }
4161 1.1 christos }
4162 1.1 christos
4163 1.1 christos if (!htab->is_vxworks
4164 1.1 christos && is_branch_reloc (r_type)
4165 1.1 christos && h != NULL
4166 1.1 christos && h == tga)
4167 1.1 christos {
4168 1.1 christos if (rel != relocs
4169 1.1 christos && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
4170 1.1 christos || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
4171 1.1 christos /* We have a new-style __tls_get_addr call with a marker
4172 1.1 christos reloc. */
4173 1.1 christos ;
4174 1.1 christos else
4175 1.1 christos /* Mark this section as having an old-style call. */
4176 1.1 christos sec->has_tls_get_addr_call = 1;
4177 1.1 christos }
4178 1.7 christos
4179 1.7 christos switch ((int)r_type)
4180 1.7 christos {
4181 1.7 christos case R_PPC_TLSGD:
4182 1.7 christos case R_PPC_TLSLD:
4183 1.7 christos /* These special tls relocs tie a call to __tls_get_addr with
4184 1.7 christos its parameter symbol. */
4185 1.7 christos if (h != NULL)
4186 1.7 christos ppc_elf_hash_entry (h)->tls_mask |= TLS_TLS | TLS_MARK;
4187 1.1 christos else
4188 1.1 christos if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4189 1.1 christos NON_GOT | TLS_TLS | TLS_MARK))
4190 1.1 christos return FALSE;
4191 1.1 christos break;
4192 1.1 christos
4193 1.1 christos case R_PPC_PLTSEQ:
4194 1.1 christos break;
4195 1.1 christos
4196 1.1 christos case R_PPC_GOT_TLSLD16:
4197 1.1 christos case R_PPC_GOT_TLSLD16_LO:
4198 1.1 christos case R_PPC_GOT_TLSLD16_HI:
4199 1.1 christos case R_PPC_GOT_TLSLD16_HA:
4200 1.1 christos tls_type = TLS_TLS | TLS_LD;
4201 1.1 christos goto dogottls;
4202 1.1 christos
4203 1.1 christos case R_PPC_GOT_TLSGD16:
4204 1.1 christos case R_PPC_GOT_TLSGD16_LO:
4205 1.1 christos case R_PPC_GOT_TLSGD16_HI:
4206 1.1 christos case R_PPC_GOT_TLSGD16_HA:
4207 1.7 christos tls_type = TLS_TLS | TLS_GD;
4208 1.1 christos goto dogottls;
4209 1.1 christos
4210 1.1 christos case R_PPC_GOT_TPREL16:
4211 1.1 christos case R_PPC_GOT_TPREL16_LO:
4212 1.1 christos case R_PPC_GOT_TPREL16_HI:
4213 1.1 christos case R_PPC_GOT_TPREL16_HA:
4214 1.1 christos if (bfd_link_dll (info))
4215 1.1 christos info->flags |= DF_STATIC_TLS;
4216 1.1 christos tls_type = TLS_TLS | TLS_TPREL;
4217 1.1 christos goto dogottls;
4218 1.1 christos
4219 1.7 christos case R_PPC_GOT_DTPREL16:
4220 1.1 christos case R_PPC_GOT_DTPREL16_LO:
4221 1.1 christos case R_PPC_GOT_DTPREL16_HI:
4222 1.1 christos case R_PPC_GOT_DTPREL16_HA:
4223 1.1 christos tls_type = TLS_TLS | TLS_DTPREL;
4224 1.1 christos dogottls:
4225 1.1 christos sec->has_tls_reloc = 1;
4226 1.1 christos /* Fall through. */
4227 1.7 christos
4228 1.1 christos /* GOT16 relocations */
4229 1.1 christos case R_PPC_GOT16:
4230 1.1 christos case R_PPC_GOT16_LO:
4231 1.1 christos case R_PPC_GOT16_HI:
4232 1.1 christos case R_PPC_GOT16_HA:
4233 1.1 christos /* This symbol requires a global offset table entry. */
4234 1.1 christos if (htab->elf.sgot == NULL)
4235 1.1 christos {
4236 1.1 christos if (htab->elf.dynobj == NULL)
4237 1.1 christos htab->elf.dynobj = abfd;
4238 1.1 christos if (!ppc_elf_create_got (htab->elf.dynobj, info))
4239 1.1 christos return FALSE;
4240 1.1 christos }
4241 1.1 christos if (h != NULL)
4242 1.1 christos {
4243 1.1 christos h->got.refcount += 1;
4244 1.1 christos ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4245 1.1 christos }
4246 1.3 christos else
4247 1.1 christos /* This is a global offset table entry for a local symbol. */
4248 1.1 christos if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4249 1.1 christos return FALSE;
4250 1.1 christos
4251 1.1 christos /* We may also need a plt entry if the symbol turns out to be
4252 1.1 christos an ifunc. */
4253 1.1 christos if (h != NULL && !bfd_link_pic (info))
4254 1.1 christos {
4255 1.3 christos if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4256 1.1 christos return FALSE;
4257 1.1 christos }
4258 1.1 christos break;
4259 1.1 christos
4260 1.3 christos /* Indirect .sdata relocation. */
4261 1.3 christos case R_PPC_EMB_SDAI16:
4262 1.3 christos if (bfd_link_pic (info))
4263 1.1 christos {
4264 1.1 christos bad_shared_reloc (abfd, r_type);
4265 1.1 christos return FALSE;
4266 1.1 christos }
4267 1.1 christos htab->sdata[0].sym->ref_regular = 1;
4268 1.1 christos if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4269 1.1 christos h, rel))
4270 1.1 christos return FALSE;
4271 1.1 christos if (h != NULL)
4272 1.1 christos {
4273 1.3 christos ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4274 1.1 christos h->non_got_ref = TRUE;
4275 1.1 christos }
4276 1.1 christos break;
4277 1.1 christos
4278 1.3 christos /* Indirect .sdata2 relocation. */
4279 1.3 christos case R_PPC_EMB_SDA2I16:
4280 1.3 christos if (bfd_link_pic (info))
4281 1.1 christos {
4282 1.1 christos bad_shared_reloc (abfd, r_type);
4283 1.1 christos return FALSE;
4284 1.1 christos }
4285 1.1 christos htab->sdata[1].sym->ref_regular = 1;
4286 1.1 christos if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4287 1.1 christos h, rel))
4288 1.1 christos return FALSE;
4289 1.3 christos if (h != NULL)
4290 1.3 christos {
4291 1.7 christos ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4292 1.3 christos h->non_got_ref = TRUE;
4293 1.1 christos }
4294 1.1 christos break;
4295 1.1 christos
4296 1.1 christos case R_PPC_SDAREL16:
4297 1.1 christos htab->sdata[0].sym->ref_regular = 1;
4298 1.1 christos /* Fall through. */
4299 1.1 christos
4300 1.1 christos case R_PPC_VLE_SDAREL_LO16A:
4301 1.1 christos case R_PPC_VLE_SDAREL_LO16D:
4302 1.1 christos case R_PPC_VLE_SDAREL_HI16A:
4303 1.1 christos case R_PPC_VLE_SDAREL_HI16D:
4304 1.1 christos case R_PPC_VLE_SDAREL_HA16A:
4305 1.1 christos case R_PPC_VLE_SDAREL_HA16D:
4306 1.1 christos if (h != NULL)
4307 1.1 christos {
4308 1.1 christos ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4309 1.1 christos h->non_got_ref = TRUE;
4310 1.1 christos }
4311 1.1 christos break;
4312 1.1 christos
4313 1.1 christos case R_PPC_VLE_REL8:
4314 1.1 christos case R_PPC_VLE_REL15:
4315 1.7 christos case R_PPC_VLE_REL24:
4316 1.1 christos case R_PPC_VLE_LO16A:
4317 1.1 christos case R_PPC_VLE_LO16D:
4318 1.1 christos case R_PPC_VLE_HI16A:
4319 1.3 christos case R_PPC_VLE_HI16D:
4320 1.1 christos case R_PPC_VLE_HA16A:
4321 1.1 christos case R_PPC_VLE_HA16D:
4322 1.1 christos case R_PPC_VLE_ADDR20:
4323 1.1 christos break;
4324 1.3 christos
4325 1.1 christos case R_PPC_EMB_SDA2REL:
4326 1.1 christos if (bfd_link_pic (info))
4327 1.1 christos {
4328 1.1 christos bad_shared_reloc (abfd, r_type);
4329 1.1 christos return FALSE;
4330 1.1 christos }
4331 1.1 christos htab->sdata[1].sym->ref_regular = 1;
4332 1.1 christos if (h != NULL)
4333 1.1 christos {
4334 1.1 christos ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4335 1.1 christos h->non_got_ref = TRUE;
4336 1.3 christos }
4337 1.1 christos break;
4338 1.1 christos
4339 1.1 christos case R_PPC_VLE_SDA21_LO:
4340 1.1 christos case R_PPC_VLE_SDA21:
4341 1.1 christos case R_PPC_EMB_SDA21:
4342 1.1 christos case R_PPC_EMB_RELSDA:
4343 1.1 christos if (bfd_link_pic (info))
4344 1.1 christos {
4345 1.1 christos bad_shared_reloc (abfd, r_type);
4346 1.1 christos return FALSE;
4347 1.1 christos }
4348 1.1 christos if (h != NULL)
4349 1.1 christos {
4350 1.1 christos ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4351 1.1 christos h->non_got_ref = TRUE;
4352 1.1 christos }
4353 1.3 christos break;
4354 1.1 christos
4355 1.1 christos case R_PPC_EMB_NADDR32:
4356 1.1 christos case R_PPC_EMB_NADDR16:
4357 1.1 christos case R_PPC_EMB_NADDR16_LO:
4358 1.1 christos case R_PPC_EMB_NADDR16_HI:
4359 1.1 christos case R_PPC_EMB_NADDR16_HA:
4360 1.1 christos if (bfd_link_pic (info))
4361 1.1 christos {
4362 1.1 christos bad_shared_reloc (abfd, r_type);
4363 1.1 christos return FALSE;
4364 1.1 christos }
4365 1.7 christos if (h != NULL)
4366 1.7 christos h->non_got_ref = TRUE;
4367 1.7 christos break;
4368 1.7 christos
4369 1.7 christos case R_PPC_PLTREL24:
4370 1.7 christos if (h == NULL)
4371 1.7 christos break;
4372 1.1 christos ppc_elf_tdata (abfd)->makes_plt_call = 1;
4373 1.1 christos goto pltentry;
4374 1.1 christos
4375 1.1 christos case R_PPC_PLTCALL:
4376 1.1 christos sec->has_pltcall = 1;
4377 1.7 christos /* Fall through. */
4378 1.1 christos
4379 1.1 christos case R_PPC_PLT32:
4380 1.1 christos case R_PPC_PLTREL32:
4381 1.3 christos case R_PPC_PLT16_LO:
4382 1.1 christos case R_PPC_PLT16_HI:
4383 1.1 christos case R_PPC_PLT16_HA:
4384 1.7 christos pltentry:
4385 1.7 christos #ifdef DEBUG
4386 1.7 christos fprintf (stderr, "Reloc requires a PLT entry\n");
4387 1.7 christos #endif
4388 1.7 christos /* This symbol requires a procedure linkage table entry. */
4389 1.7 christos if (h == NULL)
4390 1.1 christos {
4391 1.7 christos pltent = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4392 1.7 christos NON_GOT | PLT_KEEP);
4393 1.1 christos if (pltent == NULL)
4394 1.7 christos return FALSE;
4395 1.1 christos }
4396 1.7 christos else
4397 1.7 christos {
4398 1.7 christos if (r_type != R_PPC_PLTREL24)
4399 1.7 christos ppc_elf_hash_entry (h)->tls_mask |= PLT_KEEP;
4400 1.7 christos h->needs_plt = 1;
4401 1.7 christos pltent = &h->plt.plist;
4402 1.7 christos }
4403 1.7 christos addend = 0;
4404 1.7 christos if (bfd_link_pic (info)
4405 1.1 christos && (r_type == R_PPC_PLTREL24
4406 1.1 christos || r_type == R_PPC_PLT16_LO
4407 1.1 christos || r_type == R_PPC_PLT16_HI
4408 1.1 christos || r_type == R_PPC_PLT16_HA))
4409 1.1 christos addend = rel->r_addend;
4410 1.1 christos if (!update_plt_info (abfd, pltent, got2, addend))
4411 1.1 christos return FALSE;
4412 1.1 christos break;
4413 1.1 christos
4414 1.1 christos /* The following relocations don't need to propagate the
4415 1.1 christos relocation if linking a shared object since they are
4416 1.1 christos section relative. */
4417 1.1 christos case R_PPC_SECTOFF:
4418 1.1 christos case R_PPC_SECTOFF_LO:
4419 1.1 christos case R_PPC_SECTOFF_HI:
4420 1.1 christos case R_PPC_SECTOFF_HA:
4421 1.1 christos case R_PPC_DTPREL16:
4422 1.1 christos case R_PPC_DTPREL16_LO:
4423 1.1 christos case R_PPC_DTPREL16_HI:
4424 1.1 christos case R_PPC_DTPREL16_HA:
4425 1.3 christos case R_PPC_TOC16:
4426 1.1 christos break;
4427 1.1 christos
4428 1.1 christos case R_PPC_REL16:
4429 1.1 christos case R_PPC_REL16_LO:
4430 1.1 christos case R_PPC_REL16_HI:
4431 1.1 christos case R_PPC_REL16_HA:
4432 1.1 christos case R_PPC_REL16DX_HA:
4433 1.1 christos ppc_elf_tdata (abfd)->has_rel16 = 1;
4434 1.1 christos break;
4435 1.1 christos
4436 1.1 christos /* These are just markers. */
4437 1.7 christos case R_PPC_TLS:
4438 1.1 christos case R_PPC_EMB_MRKREF:
4439 1.1 christos case R_PPC_NONE:
4440 1.1 christos case R_PPC_max:
4441 1.1 christos case R_PPC_RELAX:
4442 1.1 christos case R_PPC_RELAX_PLT:
4443 1.1 christos case R_PPC_RELAX_PLTREL24:
4444 1.1 christos case R_PPC_16DX_HA:
4445 1.1 christos break;
4446 1.1 christos
4447 1.1 christos /* These should only appear in dynamic objects. */
4448 1.1 christos case R_PPC_COPY:
4449 1.1 christos case R_PPC_GLOB_DAT:
4450 1.1 christos case R_PPC_JMP_SLOT:
4451 1.1 christos case R_PPC_RELATIVE:
4452 1.1 christos case R_PPC_IRELATIVE:
4453 1.1 christos break;
4454 1.1 christos
4455 1.1 christos /* These aren't handled yet. We'll report an error later. */
4456 1.1 christos case R_PPC_ADDR30:
4457 1.1 christos case R_PPC_EMB_RELSEC16:
4458 1.1 christos case R_PPC_EMB_RELST_LO:
4459 1.1 christos case R_PPC_EMB_RELST_HI:
4460 1.1 christos case R_PPC_EMB_RELST_HA:
4461 1.1 christos case R_PPC_EMB_BIT_FLD:
4462 1.1 christos break;
4463 1.1 christos
4464 1.3 christos /* This refers only to functions defined in the shared library. */
4465 1.3 christos case R_PPC_LOCAL24PC:
4466 1.3 christos if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4467 1.3 christos {
4468 1.3 christos htab->plt_type = PLT_OLD;
4469 1.3 christos htab->old_bfd = abfd;
4470 1.1 christos }
4471 1.1 christos if (h != NULL && h->type == STT_GNU_IFUNC)
4472 1.1 christos {
4473 1.1 christos h->needs_plt = 1;
4474 1.1 christos if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4475 1.1 christos return FALSE;
4476 1.1 christos }
4477 1.1 christos break;
4478 1.1 christos
4479 1.1 christos /* This relocation describes the C++ object vtable hierarchy.
4480 1.1 christos Reconstruct it for later use during GC. */
4481 1.1 christos case R_PPC_GNU_VTINHERIT:
4482 1.1 christos if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4483 1.1 christos return FALSE;
4484 1.1 christos break;
4485 1.1 christos
4486 1.1 christos /* This relocation describes which C++ vtable entries are actually
4487 1.1 christos used. Record for later use during GC. */
4488 1.7 christos case R_PPC_GNU_VTENTRY:
4489 1.1 christos BFD_ASSERT (h != NULL);
4490 1.1 christos if (h != NULL
4491 1.1 christos && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4492 1.1 christos return FALSE;
4493 1.1 christos break;
4494 1.7 christos
4495 1.1 christos /* We shouldn't really be seeing TPREL32. */
4496 1.1 christos case R_PPC_TPREL32:
4497 1.1 christos case R_PPC_TPREL16:
4498 1.1 christos case R_PPC_TPREL16_LO:
4499 1.1 christos case R_PPC_TPREL16_HI:
4500 1.1 christos case R_PPC_TPREL16_HA:
4501 1.1 christos if (bfd_link_dll (info))
4502 1.1 christos info->flags |= DF_STATIC_TLS;
4503 1.1 christos goto dodyn;
4504 1.1 christos
4505 1.1 christos /* Nor these. */
4506 1.1 christos case R_PPC_DTPMOD32:
4507 1.3 christos case R_PPC_DTPREL32:
4508 1.1 christos goto dodyn;
4509 1.1 christos
4510 1.1 christos case R_PPC_REL32:
4511 1.1 christos if (h == NULL
4512 1.1 christos && got2 != NULL
4513 1.1 christos && (sec->flags & SEC_CODE) != 0
4514 1.1 christos && bfd_link_pic (info)
4515 1.1 christos && htab->plt_type == PLT_UNSET)
4516 1.1 christos {
4517 1.1 christos /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4518 1.1 christos the start of a function, which assembles to a REL32
4519 1.1 christos reference to .got2. If we detect one of these, then
4520 1.1 christos force the old PLT layout because the linker cannot
4521 1.1 christos reliably deduce the GOT pointer value needed for
4522 1.1 christos PLT call stubs. */
4523 1.1 christos asection *s;
4524 1.1 christos Elf_Internal_Sym *isym;
4525 1.1 christos
4526 1.1 christos isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4527 1.1 christos abfd, r_symndx);
4528 1.1 christos if (isym == NULL)
4529 1.1 christos return FALSE;
4530 1.1 christos
4531 1.1 christos s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4532 1.1 christos if (s == got2)
4533 1.1 christos {
4534 1.1 christos htab->plt_type = PLT_OLD;
4535 1.1 christos htab->old_bfd = abfd;
4536 1.1 christos }
4537 1.1 christos }
4538 1.1 christos if (h == NULL || h == htab->elf.hgot)
4539 1.1 christos break;
4540 1.1 christos /* fall through */
4541 1.1 christos
4542 1.3 christos case R_PPC_ADDR32:
4543 1.1 christos case R_PPC_ADDR16:
4544 1.1 christos case R_PPC_ADDR16_LO:
4545 1.1 christos case R_PPC_ADDR16_HI:
4546 1.1 christos case R_PPC_ADDR16_HA:
4547 1.1 christos case R_PPC_UADDR32:
4548 1.1 christos case R_PPC_UADDR16:
4549 1.1 christos if (h != NULL && !bfd_link_pic (info))
4550 1.1 christos {
4551 1.1 christos /* We may need a plt entry if the symbol turns out to be
4552 1.3 christos a function defined in a dynamic object. */
4553 1.3 christos if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4554 1.3 christos return FALSE;
4555 1.3 christos
4556 1.1 christos /* We may need a copy reloc too. */
4557 1.1 christos h->non_got_ref = 1;
4558 1.1 christos h->pointer_equality_needed = 1;
4559 1.1 christos if (r_type == R_PPC_ADDR16_HA)
4560 1.1 christos ppc_elf_hash_entry (h)->has_addr16_ha = 1;
4561 1.1 christos if (r_type == R_PPC_ADDR16_LO)
4562 1.1 christos ppc_elf_hash_entry (h)->has_addr16_lo = 1;
4563 1.1 christos }
4564 1.1 christos goto dodyn;
4565 1.1 christos
4566 1.1 christos case R_PPC_REL24:
4567 1.1 christos case R_PPC_REL14:
4568 1.1 christos case R_PPC_REL14_BRTAKEN:
4569 1.1 christos case R_PPC_REL14_BRNTAKEN:
4570 1.1 christos if (h == NULL)
4571 1.1 christos break;
4572 1.1 christos if (h == htab->elf.hgot)
4573 1.1 christos {
4574 1.1 christos if (htab->plt_type == PLT_UNSET)
4575 1.1 christos {
4576 1.1 christos htab->plt_type = PLT_OLD;
4577 1.1 christos htab->old_bfd = abfd;
4578 1.1 christos }
4579 1.1 christos break;
4580 1.3 christos }
4581 1.1 christos /* fall through */
4582 1.1 christos
4583 1.1 christos case R_PPC_ADDR24:
4584 1.1 christos case R_PPC_ADDR14:
4585 1.1 christos case R_PPC_ADDR14_BRTAKEN:
4586 1.1 christos case R_PPC_ADDR14_BRNTAKEN:
4587 1.1 christos if (h != NULL && !bfd_link_pic (info))
4588 1.1 christos {
4589 1.1 christos /* We may need a plt entry if the symbol turns out to be
4590 1.1 christos a function defined in a dynamic object. */
4591 1.1 christos h->needs_plt = 1;
4592 1.1 christos if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4593 1.1 christos return FALSE;
4594 1.1 christos break;
4595 1.1 christos }
4596 1.1 christos
4597 1.1 christos dodyn:
4598 1.1 christos /* If we are creating a shared library, and this is a reloc
4599 1.1 christos against a global symbol, or a non PC relative reloc
4600 1.1 christos against a local symbol, then we need to copy the reloc
4601 1.1 christos into the shared library. However, if we are linking with
4602 1.1 christos -Bsymbolic, we do not need to copy a reloc against a
4603 1.1 christos global symbol which is defined in an object we are
4604 1.1 christos including in the link (i.e., DEF_REGULAR is set). At
4605 1.1 christos this point we have not seen all the input files, so it is
4606 1.1 christos possible that DEF_REGULAR is not set now but will be set
4607 1.1 christos later (it is never cleared). In case of a weak definition,
4608 1.1 christos DEF_REGULAR may be cleared later by a strong definition in
4609 1.1 christos a shared library. We account for that possibility below by
4610 1.1 christos storing information in the dyn_relocs field of the hash
4611 1.1 christos table entry. A similar situation occurs when creating
4612 1.3 christos shared libraries and symbol visibility changes render the
4613 1.1 christos symbol local.
4614 1.1 christos
4615 1.3 christos If on the other hand, we are creating an executable, we
4616 1.1 christos may need to keep relocations for symbols satisfied by a
4617 1.1 christos dynamic library if we manage to avoid copy relocs for the
4618 1.1 christos symbol. */
4619 1.3 christos if ((bfd_link_pic (info)
4620 1.1 christos && (must_be_dyn_reloc (info, r_type)
4621 1.1 christos || (h != NULL
4622 1.1 christos && (!SYMBOLIC_BIND (info, h)
4623 1.1 christos || h->root.type == bfd_link_hash_defweak
4624 1.1 christos || !h->def_regular))))
4625 1.1 christos || (ELIMINATE_COPY_RELOCS
4626 1.1 christos && !bfd_link_pic (info)
4627 1.1 christos && h != NULL
4628 1.1 christos && (h->root.type == bfd_link_hash_defweak
4629 1.1 christos || !h->def_regular)))
4630 1.1 christos {
4631 1.1 christos #ifdef DEBUG
4632 1.1 christos fprintf (stderr,
4633 1.1 christos "ppc_elf_check_relocs needs to "
4634 1.1 christos "create relocation for %s\n",
4635 1.1 christos (h && h->root.root.string
4636 1.1 christos ? h->root.root.string : "<unknown>"));
4637 1.1 christos #endif
4638 1.1 christos if (sreloc == NULL)
4639 1.1 christos {
4640 1.1 christos if (htab->elf.dynobj == NULL)
4641 1.1 christos htab->elf.dynobj = abfd;
4642 1.1 christos
4643 1.1 christos sreloc = _bfd_elf_make_dynamic_reloc_section
4644 1.1 christos (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4645 1.1 christos
4646 1.1 christos if (sreloc == NULL)
4647 1.3 christos return FALSE;
4648 1.3 christos }
4649 1.3 christos
4650 1.1 christos /* If this is a global symbol, we count the number of
4651 1.3 christos relocations we need for this symbol. */
4652 1.3 christos if (h != NULL)
4653 1.3 christos {
4654 1.3 christos struct elf_dyn_relocs *p;
4655 1.3 christos struct elf_dyn_relocs **rel_head;
4656 1.3 christos
4657 1.3 christos rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4658 1.3 christos p = *rel_head;
4659 1.3 christos if (p == NULL || p->sec != sec)
4660 1.3 christos {
4661 1.3 christos p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4662 1.3 christos if (p == NULL)
4663 1.3 christos return FALSE;
4664 1.3 christos p->next = *rel_head;
4665 1.3 christos *rel_head = p;
4666 1.1 christos p->sec = sec;
4667 1.1 christos p->count = 0;
4668 1.1 christos p->pc_count = 0;
4669 1.1 christos }
4670 1.1 christos p->count += 1;
4671 1.1 christos if (!must_be_dyn_reloc (info, r_type))
4672 1.3 christos p->pc_count += 1;
4673 1.3 christos }
4674 1.3 christos else
4675 1.1 christos {
4676 1.1 christos /* Track dynamic relocs needed for local syms too.
4677 1.1 christos We really need local syms available to do this
4678 1.1 christos easily. Oh well. */
4679 1.1 christos struct ppc_dyn_relocs *p;
4680 1.1 christos struct ppc_dyn_relocs **rel_head;
4681 1.1 christos bfd_boolean is_ifunc;
4682 1.1 christos asection *s;
4683 1.1 christos void *vpp;
4684 1.1 christos Elf_Internal_Sym *isym;
4685 1.1 christos
4686 1.1 christos isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4687 1.1 christos abfd, r_symndx);
4688 1.1 christos if (isym == NULL)
4689 1.3 christos return FALSE;
4690 1.3 christos
4691 1.3 christos s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4692 1.3 christos if (s == NULL)
4693 1.3 christos s = sec;
4694 1.3 christos
4695 1.3 christos vpp = &elf_section_data (s)->local_dynrel;
4696 1.3 christos rel_head = (struct ppc_dyn_relocs **) vpp;
4697 1.3 christos is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4698 1.3 christos p = *rel_head;
4699 1.3 christos if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4700 1.3 christos p = p->next;
4701 1.3 christos if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4702 1.3 christos {
4703 1.3 christos p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4704 1.3 christos if (p == NULL)
4705 1.3 christos return FALSE;
4706 1.1 christos p->next = *rel_head;
4707 1.1 christos *rel_head = p;
4708 1.1 christos p->sec = sec;
4709 1.1 christos p->ifunc = is_ifunc;
4710 1.1 christos p->count = 0;
4711 1.1 christos }
4712 1.1 christos p->count += 1;
4713 1.1 christos }
4714 1.1 christos }
4715 1.1 christos
4716 1.7 christos break;
4717 1.7 christos }
4718 1.7 christos }
4719 1.7 christos
4720 1.1 christos return TRUE;
4721 1.7 christos }
4722 1.1 christos
4723 1.1 christos /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
4725 1.1 christos and OBFD, and merge non-conflicting ones. */
4726 1.1 christos bfd_boolean
4727 1.1 christos _bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, struct bfd_link_info *info)
4728 1.1 christos {
4729 1.1 christos bfd *obfd = info->output_bfd;
4730 1.1 christos obj_attribute *in_attr, *in_attrs;
4731 1.7 christos obj_attribute *out_attr, *out_attrs;
4732 1.1 christos bfd_boolean ret = TRUE;
4733 1.1 christos
4734 1.7 christos in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4735 1.7 christos out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4736 1.7 christos
4737 1.7 christos in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4738 1.7 christos out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4739 1.7 christos
4740 1.7 christos if (in_attr->i != out_attr->i)
4741 1.7 christos {
4742 1.7 christos int in_fp = in_attr->i & 3;
4743 1.7 christos int out_fp = out_attr->i & 3;
4744 1.7 christos static bfd *last_fp, *last_ld;
4745 1.7 christos
4746 1.7 christos if (in_fp == 0)
4747 1.7 christos ;
4748 1.7 christos else if (out_fp == 0)
4749 1.7 christos {
4750 1.7 christos out_attr->type = ATTR_TYPE_FLAG_INT_VAL;
4751 1.7 christos out_attr->i ^= in_fp;
4752 1.7 christos last_fp = ibfd;
4753 1.7 christos }
4754 1.7 christos else if (out_fp != 2 && in_fp == 2)
4755 1.7 christos {
4756 1.7 christos _bfd_error_handler
4757 1.7 christos /* xgettext:c-format */
4758 1.7 christos (_("%pB uses hard float, %pB uses soft float"),
4759 1.7 christos last_fp, ibfd);
4760 1.7 christos ret = FALSE;
4761 1.7 christos }
4762 1.7 christos else if (out_fp == 2 && in_fp != 2)
4763 1.7 christos {
4764 1.7 christos _bfd_error_handler
4765 1.7 christos /* xgettext:c-format */
4766 1.7 christos (_("%pB uses hard float, %pB uses soft float"),
4767 1.7 christos ibfd, last_fp);
4768 1.7 christos ret = FALSE;
4769 1.7 christos }
4770 1.7 christos else if (out_fp == 1 && in_fp == 3)
4771 1.7 christos {
4772 1.7 christos _bfd_error_handler
4773 1.7 christos /* xgettext:c-format */
4774 1.7 christos (_("%pB uses double-precision hard float, "
4775 1.7 christos "%pB uses single-precision hard float"), last_fp, ibfd);
4776 1.7 christos ret = FALSE;
4777 1.7 christos }
4778 1.7 christos else if (out_fp == 3 && in_fp == 1)
4779 1.7 christos {
4780 1.7 christos _bfd_error_handler
4781 1.7 christos /* xgettext:c-format */
4782 1.1 christos (_("%pB uses double-precision hard float, "
4783 1.7 christos "%pB uses single-precision hard float"), ibfd, last_fp);
4784 1.7 christos ret = FALSE;
4785 1.7 christos }
4786 1.7 christos
4787 1.7 christos in_fp = in_attr->i & 0xc;
4788 1.7 christos out_fp = out_attr->i & 0xc;
4789 1.7 christos if (in_fp == 0)
4790 1.7 christos ;
4791 1.7 christos else if (out_fp == 0)
4792 1.7 christos {
4793 1.7 christos out_attr->type = ATTR_TYPE_FLAG_INT_VAL;
4794 1.7 christos out_attr->i ^= in_fp;
4795 1.7 christos last_ld = ibfd;
4796 1.7 christos }
4797 1.7 christos else if (out_fp != 2 * 4 && in_fp == 2 * 4)
4798 1.7 christos {
4799 1.7 christos _bfd_error_handler
4800 1.7 christos /* xgettext:c-format */
4801 1.7 christos (_("%pB uses 64-bit long double, "
4802 1.7 christos "%pB uses 128-bit long double"), ibfd, last_ld);
4803 1.7 christos ret = FALSE;
4804 1.7 christos }
4805 1.7 christos else if (in_fp != 2 * 4 && out_fp == 2 * 4)
4806 1.7 christos {
4807 1.7 christos _bfd_error_handler
4808 1.7 christos /* xgettext:c-format */
4809 1.7 christos (_("%pB uses 64-bit long double, "
4810 1.7 christos "%pB uses 128-bit long double"), last_ld, ibfd);
4811 1.7 christos ret = FALSE;
4812 1.7 christos }
4813 1.7 christos else if (out_fp == 1 * 4 && in_fp == 3 * 4)
4814 1.7 christos {
4815 1.7 christos _bfd_error_handler
4816 1.7 christos /* xgettext:c-format */
4817 1.7 christos (_("%pB uses IBM long double, "
4818 1.7 christos "%pB uses IEEE long double"), last_ld, ibfd);
4819 1.7 christos ret = FALSE;
4820 1.7 christos }
4821 1.7 christos else if (out_fp == 3 * 4 && in_fp == 1 * 4)
4822 1.7 christos {
4823 1.7 christos _bfd_error_handler
4824 1.7 christos /* xgettext:c-format */
4825 1.7 christos (_("%pB uses IBM long double, "
4826 1.7 christos "%pB uses IEEE long double"), ibfd, last_ld);
4827 1.1 christos ret = FALSE;
4828 1.7 christos }
4829 1.7 christos }
4830 1.7 christos
4831 1.7 christos if (!ret)
4832 1.7 christos {
4833 1.7 christos out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR;
4834 1.7 christos bfd_set_error (bfd_error_bad_value);
4835 1.7 christos }
4836 1.7 christos return ret;
4837 1.7 christos }
4838 1.7 christos
4839 1.7 christos /* Merge object attributes from IBFD into OBFD. Warn if
4840 1.7 christos there are conflicting attributes. */
4841 1.7 christos static bfd_boolean
4842 1.7 christos ppc_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info)
4843 1.7 christos {
4844 1.7 christos bfd *obfd;
4845 1.7 christos obj_attribute *in_attr, *in_attrs;
4846 1.7 christos obj_attribute *out_attr, *out_attrs;
4847 1.1 christos bfd_boolean ret;
4848 1.1 christos
4849 1.1 christos if (!_bfd_elf_ppc_merge_fp_attributes (ibfd, info))
4850 1.1 christos return FALSE;
4851 1.1 christos
4852 1.7 christos obfd = info->output_bfd;
4853 1.1 christos in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4854 1.1 christos out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4855 1.7 christos
4856 1.7 christos /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4857 1.7 christos merge non-conflicting ones. */
4858 1.1 christos in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4859 1.7 christos out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4860 1.7 christos ret = TRUE;
4861 1.7 christos if (in_attr->i != out_attr->i)
4862 1.1 christos {
4863 1.7 christos int in_vec = in_attr->i & 3;
4864 1.7 christos int out_vec = out_attr->i & 3;
4865 1.7 christos static bfd *last_vec;
4866 1.1 christos
4867 1.1 christos if (in_vec == 0)
4868 1.1 christos ;
4869 1.1 christos else if (out_vec == 0)
4870 1.1 christos {
4871 1.1 christos out_attr->type = ATTR_TYPE_FLAG_INT_VAL;
4872 1.7 christos out_attr->i = in_vec;
4873 1.1 christos last_vec = ibfd;
4874 1.7 christos }
4875 1.7 christos /* For now, allow generic to transition to AltiVec or SPE
4876 1.7 christos without a warning. If GCC marked files with their stack
4877 1.7 christos alignment and used don't-care markings for files which are
4878 1.7 christos not affected by the vector ABI, we could warn about this
4879 1.7 christos case too. */
4880 1.7 christos else if (in_vec == 1)
4881 1.7 christos ;
4882 1.7 christos else if (out_vec == 1)
4883 1.7 christos {
4884 1.7 christos out_attr->type = ATTR_TYPE_FLAG_INT_VAL;
4885 1.7 christos out_attr->i = in_vec;
4886 1.7 christos last_vec = ibfd;
4887 1.7 christos }
4888 1.7 christos else if (out_vec < in_vec)
4889 1.7 christos {
4890 1.7 christos _bfd_error_handler
4891 1.7 christos /* xgettext:c-format */
4892 1.7 christos (_("%pB uses AltiVec vector ABI, %pB uses SPE vector ABI"),
4893 1.7 christos last_vec, ibfd);
4894 1.7 christos out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR;
4895 1.7 christos ret = FALSE;
4896 1.7 christos }
4897 1.7 christos else if (out_vec > in_vec)
4898 1.1 christos {
4899 1.1 christos _bfd_error_handler
4900 1.1 christos /* xgettext:c-format */
4901 1.1 christos (_("%pB uses AltiVec vector ABI, %pB uses SPE vector ABI"),
4902 1.1 christos ibfd, last_vec);
4903 1.1 christos out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR;
4904 1.1 christos ret = FALSE;
4905 1.1 christos }
4906 1.7 christos }
4907 1.7 christos
4908 1.7 christos /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4909 1.7 christos and merge non-conflicting ones. */
4910 1.7 christos in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4911 1.1 christos out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4912 1.7 christos if (in_attr->i != out_attr->i)
4913 1.7 christos {
4914 1.7 christos int in_struct = in_attr->i & 3;
4915 1.7 christos int out_struct = out_attr->i & 3;
4916 1.7 christos static bfd *last_struct;
4917 1.7 christos
4918 1.7 christos if (in_struct == 0 || in_struct == 3)
4919 1.7 christos ;
4920 1.7 christos else if (out_struct == 0)
4921 1.7 christos {
4922 1.7 christos out_attr->type = ATTR_TYPE_FLAG_INT_VAL;
4923 1.7 christos out_attr->i = in_struct;
4924 1.7 christos last_struct = ibfd;
4925 1.7 christos }
4926 1.7 christos else if (out_struct < in_struct)
4927 1.7 christos {
4928 1.7 christos _bfd_error_handler
4929 1.7 christos /* xgettext:c-format */
4930 1.7 christos (_("%pB uses r3/r4 for small structure returns, "
4931 1.7 christos "%pB uses memory"), last_struct, ibfd);
4932 1.7 christos out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR;
4933 1.7 christos ret = FALSE;
4934 1.7 christos }
4935 1.7 christos else if (out_struct > in_struct)
4936 1.7 christos {
4937 1.7 christos _bfd_error_handler
4938 1.7 christos /* xgettext:c-format */
4939 1.7 christos (_("%pB uses r3/r4 for small structure returns, "
4940 1.7 christos "%pB uses memory"), ibfd, last_struct);
4941 1.1 christos out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR;
4942 1.1 christos ret = FALSE;
4943 1.1 christos }
4944 1.7 christos }
4945 1.1 christos if (!ret)
4946 1.1 christos {
4947 1.1 christos bfd_set_error (bfd_error_bad_value);
4948 1.1 christos return FALSE;
4949 1.1 christos }
4950 1.1 christos
4951 1.7 christos /* Merge Tag_compatibility attributes and any common GNU ones. */
4952 1.1 christos return _bfd_elf_merge_object_attributes (ibfd, info);
4953 1.7 christos }
4954 1.1 christos
4955 1.1 christos /* Merge backend specific data from an object file to the output
4956 1.1 christos object file when linking. */
4957 1.1 christos
4958 1.1 christos static bfd_boolean
4959 1.1 christos ppc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4960 1.1 christos {
4961 1.1 christos bfd *obfd = info->output_bfd;
4962 1.7 christos flagword old_flags;
4963 1.1 christos flagword new_flags;
4964 1.1 christos bfd_boolean error;
4965 1.7 christos
4966 1.1 christos if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4967 1.1 christos return TRUE;
4968 1.1 christos
4969 1.1 christos /* Check if we have the same endianness. */
4970 1.1 christos if (! _bfd_generic_verify_endian_match (ibfd, info))
4971 1.1 christos return FALSE;
4972 1.1 christos
4973 1.1 christos if (!ppc_elf_merge_obj_attributes (ibfd, info))
4974 1.1 christos return FALSE;
4975 1.1 christos
4976 1.1 christos new_flags = elf_elfheader (ibfd)->e_flags;
4977 1.1 christos old_flags = elf_elfheader (obfd)->e_flags;
4978 1.1 christos if (!elf_flags_init (obfd))
4979 1.1 christos {
4980 1.1 christos /* First call, no flags set. */
4981 1.1 christos elf_flags_init (obfd) = TRUE;
4982 1.1 christos elf_elfheader (obfd)->e_flags = new_flags;
4983 1.1 christos }
4984 1.1 christos
4985 1.1 christos /* Compatible flags are ok. */
4986 1.1 christos else if (new_flags == old_flags)
4987 1.1 christos ;
4988 1.1 christos
4989 1.1 christos /* Incompatible flags. */
4990 1.1 christos else
4991 1.7 christos {
4992 1.7 christos /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4993 1.1 christos to be linked with either. */
4994 1.1 christos error = FALSE;
4995 1.1 christos if ((new_flags & EF_PPC_RELOCATABLE) != 0
4996 1.1 christos && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4997 1.1 christos {
4998 1.1 christos error = TRUE;
4999 1.7 christos _bfd_error_handler
5000 1.7 christos (_("%pB: compiled with -mrelocatable and linked with "
5001 1.1 christos "modules compiled normally"), ibfd);
5002 1.1 christos }
5003 1.1 christos else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
5004 1.1 christos && (old_flags & EF_PPC_RELOCATABLE) != 0)
5005 1.1 christos {
5006 1.1 christos error = TRUE;
5007 1.1 christos _bfd_error_handler
5008 1.1 christos (_("%pB: compiled normally and linked with "
5009 1.1 christos "modules compiled with -mrelocatable"), ibfd);
5010 1.1 christos }
5011 1.1 christos
5012 1.1 christos /* The output is -mrelocatable-lib iff both the input files are. */
5013 1.1 christos if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
5014 1.1 christos elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
5015 1.1 christos
5016 1.1 christos /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
5017 1.1 christos but each input file is either -mrelocatable or -mrelocatable-lib. */
5018 1.1 christos if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
5019 1.1 christos && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
5020 1.1 christos && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
5021 1.1 christos elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
5022 1.1 christos
5023 1.1 christos /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
5024 1.1 christos any module uses it. */
5025 1.1 christos elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
5026 1.7 christos
5027 1.7 christos new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
5028 1.7 christos old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
5029 1.7 christos
5030 1.7 christos /* Warn about any other mismatches. */
5031 1.1 christos if (new_flags != old_flags)
5032 1.1 christos {
5033 1.1 christos error = TRUE;
5034 1.1 christos _bfd_error_handler
5035 1.1 christos /* xgettext:c-format */
5036 1.1 christos (_("%pB: uses different e_flags (%#x) fields "
5037 1.1 christos "than previous modules (%#x)"),
5038 1.1 christos ibfd, new_flags, old_flags);
5039 1.1 christos }
5040 1.1 christos
5041 1.1 christos if (error)
5042 1.1 christos {
5043 1.1 christos bfd_set_error (bfd_error_bad_value);
5044 1.7 christos return FALSE;
5045 1.7 christos }
5046 1.7 christos }
5047 1.7 christos
5048 1.3 christos return TRUE;
5049 1.7 christos }
5050 1.7 christos
5051 1.7 christos static void
5052 1.7 christos ppc_elf_vle_split16 (bfd *input_bfd,
5053 1.7 christos asection *input_section,
5054 1.7 christos unsigned long offset,
5055 1.7 christos bfd_byte *loc,
5056 1.7 christos bfd_vma value,
5057 1.7 christos split16_format_type split16_format,
5058 1.7 christos bfd_boolean fixup)
5059 1.7 christos {
5060 1.7 christos unsigned int insn, opcode, top5;
5061 1.7 christos
5062 1.7 christos insn = bfd_get_32 (input_bfd, loc);
5063 1.7 christos opcode = insn & 0xfc00f800;
5064 1.7 christos if (opcode == E_OR2I_INSN
5065 1.7 christos || opcode == E_AND2I_DOT_INSN
5066 1.7 christos || opcode == E_OR2IS_INSN
5067 1.7 christos || opcode == E_LIS_INSN
5068 1.7 christos || opcode == E_AND2IS_DOT_INSN)
5069 1.7 christos {
5070 1.7 christos if (split16_format != split16a_type)
5071 1.7 christos {
5072 1.7 christos if (fixup)
5073 1.7 christos split16_format = split16a_type;
5074 1.7 christos else
5075 1.7 christos _bfd_error_handler
5076 1.7 christos /* xgettext:c-format */
5077 1.7 christos (_("%pB(%pA+0x%lx): expected 16A style relocation on 0x%08x insn"),
5078 1.7 christos input_bfd, input_section, offset, opcode);
5079 1.7 christos }
5080 1.7 christos }
5081 1.7 christos else if (opcode == E_ADD2I_DOT_INSN
5082 1.7 christos || opcode == E_ADD2IS_INSN
5083 1.7 christos || opcode == E_CMP16I_INSN
5084 1.7 christos || opcode == E_MULL2I_INSN
5085 1.7 christos || opcode == E_CMPL16I_INSN
5086 1.7 christos || opcode == E_CMPH16I_INSN
5087 1.7 christos || opcode == E_CMPHL16I_INSN)
5088 1.7 christos {
5089 1.7 christos if (split16_format != split16d_type)
5090 1.7 christos {
5091 1.7 christos if (fixup)
5092 1.7 christos split16_format = split16d_type;
5093 1.7 christos else
5094 1.7 christos _bfd_error_handler
5095 1.7 christos /* xgettext:c-format */
5096 1.7 christos (_("%pB(%pA+0x%lx): expected 16D style relocation on 0x%08x insn"),
5097 1.7 christos input_bfd, input_section, offset, opcode);
5098 1.7 christos }
5099 1.1 christos }
5100 1.7 christos top5 = value & 0xf800;
5101 1.7 christos top5 = top5 << (split16_format == split16a_type ? 5 : 10);
5102 1.1 christos insn &= (split16_format == split16a_type ? ~0x1f07ff : ~0x3e007ff);
5103 1.7 christos insn |= top5;
5104 1.1 christos insn |= value & 0x7ff;
5105 1.3 christos bfd_put_32 (input_bfd, insn, loc);
5106 1.7 christos }
5107 1.7 christos
5108 1.7 christos static void
5109 1.7 christos ppc_elf_vle_split20 (bfd *output_bfd, bfd_byte *loc, bfd_vma value)
5110 1.7 christos {
5111 1.7 christos unsigned int insn;
5112 1.3 christos
5113 1.3 christos insn = bfd_get_32 (output_bfd, loc);
5114 1.1 christos /* We have an li20 field, bits 17..20, 11..15, 21..31. */
5115 1.1 christos /* Top 4 bits of value to 17..20. */
5116 1.1 christos insn |= (value & 0xf0000) >> 5;
5117 1.1 christos /* Next 5 bits of the value to 11..15. */
5118 1.1 christos insn |= (value & 0xf800) << 5;
5119 1.1 christos /* And the final 11 bits of the value to bits 21 to 31. */
5120 1.1 christos insn |= value & 0x7ff;
5121 1.3 christos bfd_put_32 (output_bfd, insn, loc);
5122 1.1 christos }
5123 1.1 christos
5124 1.1 christos
5125 1.1 christos /* Choose which PLT scheme to use, and set .plt flags appropriately.
5127 1.1 christos Returns -1 on error, 0 for old PLT, 1 for new PLT. */
5128 1.1 christos int
5129 1.1 christos ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
5130 1.1 christos struct bfd_link_info *info)
5131 1.1 christos {
5132 1.3 christos struct ppc_elf_link_hash_table *htab;
5133 1.1 christos flagword flags;
5134 1.3 christos
5135 1.1 christos htab = ppc_elf_hash_table (info);
5136 1.1 christos
5137 1.1 christos if (htab->plt_type == PLT_UNSET)
5138 1.1 christos {
5139 1.1 christos struct elf_link_hash_entry *h;
5140 1.1 christos
5141 1.1 christos if (htab->params->plt_style == PLT_OLD)
5142 1.7 christos htab->plt_type = PLT_OLD;
5143 1.1 christos else if (bfd_link_pic (info)
5144 1.1 christos && htab->elf.dynamic_sections_created
5145 1.1 christos && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
5146 1.1 christos FALSE, FALSE, TRUE)) != NULL
5147 1.1 christos && (h->type == STT_FUNC
5148 1.1 christos || h->needs_plt)
5149 1.1 christos && h->ref_regular
5150 1.1 christos && !(SYMBOL_CALLS_LOCAL (info, h)
5151 1.1 christos || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
5152 1.1 christos {
5153 1.3 christos /* Profiling of shared libs (and pies) is not supported with
5154 1.1 christos secure plt, because ppc32 does profiling before a
5155 1.1 christos function prologue and a secure plt pic call stubs needs
5156 1.1 christos r30 to be set up. */
5157 1.1 christos htab->plt_type = PLT_OLD;
5158 1.1 christos }
5159 1.1 christos else
5160 1.1 christos {
5161 1.3 christos bfd *ibfd;
5162 1.1 christos enum ppc_elf_plt_type plt_type = htab->params->plt_style;
5163 1.1 christos
5164 1.1 christos /* Look through the reloc flags left by ppc_elf_check_relocs.
5165 1.1 christos Use the old style bss plt if a file makes plt calls
5166 1.1 christos without using the new relocs, and if ld isn't given
5167 1.1 christos --secure-plt and we never see REL16 relocs. */
5168 1.1 christos if (plt_type == PLT_UNSET)
5169 1.1 christos plt_type = PLT_OLD;
5170 1.1 christos for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
5171 1.1 christos if (is_ppc_elf (ibfd))
5172 1.1 christos {
5173 1.1 christos if (ppc_elf_tdata (ibfd)->has_rel16)
5174 1.1 christos plt_type = PLT_NEW;
5175 1.1 christos else if (ppc_elf_tdata (ibfd)->makes_plt_call)
5176 1.3 christos {
5177 1.1 christos plt_type = PLT_OLD;
5178 1.1 christos htab->old_bfd = ibfd;
5179 1.7 christos break;
5180 1.1 christos }
5181 1.7 christos }
5182 1.1 christos htab->plt_type = plt_type;
5183 1.1 christos }
5184 1.1 christos }
5185 1.1 christos if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
5186 1.1 christos {
5187 1.1 christos if (htab->old_bfd != NULL)
5188 1.1 christos _bfd_error_handler (_("bss-plt forced due to %pB"), htab->old_bfd);
5189 1.1 christos else
5190 1.1 christos _bfd_error_handler (_("bss-plt forced by profiling"));
5191 1.1 christos }
5192 1.7 christos
5193 1.7 christos BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
5194 1.1 christos
5195 1.1 christos if (htab->plt_type == PLT_NEW)
5196 1.1 christos {
5197 1.7 christos flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
5198 1.7 christos | SEC_IN_MEMORY | SEC_LINKER_CREATED);
5199 1.1 christos
5200 1.1 christos /* The new PLT is a loaded section. */
5201 1.1 christos if (htab->elf.splt != NULL
5202 1.1 christos && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.splt, flags))
5203 1.1 christos return -1;
5204 1.1 christos
5205 1.1 christos /* The new GOT is not executable. */
5206 1.1 christos if (htab->elf.sgot != NULL
5207 1.1 christos && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.sgot, flags))
5208 1.1 christos return -1;
5209 1.1 christos }
5210 1.1 christos else
5211 1.1 christos {
5212 1.1 christos /* Stop an unused .glink section from affecting .text alignment. */
5213 1.1 christos if (htab->glink != NULL
5214 1.1 christos && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
5215 1.1 christos return -1;
5216 1.1 christos }
5217 1.1 christos return htab->plt_type == PLT_NEW;
5218 1.1 christos }
5219 1.1 christos
5220 1.1 christos /* Return the section that should be marked against GC for a given
5222 1.1 christos relocation. */
5223 1.1 christos
5224 1.1 christos static asection *
5225 1.1 christos ppc_elf_gc_mark_hook (asection *sec,
5226 1.1 christos struct bfd_link_info *info,
5227 1.1 christos Elf_Internal_Rela *rel,
5228 1.1 christos struct elf_link_hash_entry *h,
5229 1.1 christos Elf_Internal_Sym *sym)
5230 1.1 christos {
5231 1.1 christos if (h != NULL)
5232 1.1 christos switch (ELF32_R_TYPE (rel->r_info))
5233 1.7 christos {
5234 1.7 christos case R_PPC_GNU_VTINHERIT:
5235 1.7 christos case R_PPC_GNU_VTENTRY:
5236 1.7 christos return NULL;
5237 1.7 christos }
5238 1.7 christos
5239 1.7 christos return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5240 1.1 christos }
5241 1.7 christos
5242 1.1 christos static bfd_boolean
5243 1.7 christos get_sym_h (struct elf_link_hash_entry **hp,
5244 1.7 christos Elf_Internal_Sym **symp,
5245 1.7 christos asection **symsecp,
5246 1.7 christos unsigned char **tls_maskp,
5247 1.1 christos Elf_Internal_Sym **locsymsp,
5248 1.7 christos unsigned long r_symndx,
5249 1.7 christos bfd *ibfd)
5250 1.7 christos {
5251 1.7 christos Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5252 1.1 christos
5253 1.7 christos if (r_symndx >= symtab_hdr->sh_info)
5254 1.7 christos {
5255 1.1 christos struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5256 1.7 christos struct elf_link_hash_entry *h;
5257 1.7 christos
5258 1.1 christos h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5259 1.7 christos while (h->root.type == bfd_link_hash_indirect
5260 1.1 christos || h->root.type == bfd_link_hash_warning)
5261 1.7 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
5262 1.7 christos
5263 1.7 christos if (hp != NULL)
5264 1.7 christos *hp = h;
5265 1.7 christos
5266 1.1 christos if (symp != NULL)
5267 1.1 christos *symp = NULL;
5268 1.7 christos
5269 1.7 christos if (symsecp != NULL)
5270 1.7 christos {
5271 1.7 christos asection *symsec = NULL;
5272 1.7 christos if (h->root.type == bfd_link_hash_defined
5273 1.7 christos || h->root.type == bfd_link_hash_defweak)
5274 1.7 christos symsec = h->root.u.def.section;
5275 1.1 christos *symsecp = symsec;
5276 1.7 christos }
5277 1.7 christos
5278 1.7 christos if (tls_maskp != NULL)
5279 1.7 christos *tls_maskp = &ppc_elf_hash_entry (h)->tls_mask;
5280 1.7 christos }
5281 1.7 christos else
5282 1.7 christos {
5283 1.7 christos Elf_Internal_Sym *sym;
5284 1.7 christos Elf_Internal_Sym *locsyms = *locsymsp;
5285 1.7 christos
5286 1.1 christos if (locsyms == NULL)
5287 1.7 christos {
5288 1.1 christos locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5289 1.7 christos if (locsyms == NULL)
5290 1.7 christos locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5291 1.1 christos symtab_hdr->sh_info,
5292 1.7 christos 0, NULL, NULL, NULL);
5293 1.7 christos if (locsyms == NULL)
5294 1.1 christos return FALSE;
5295 1.7 christos *locsymsp = locsyms;
5296 1.7 christos }
5297 1.1 christos sym = locsyms + r_symndx;
5298 1.7 christos
5299 1.7 christos if (hp != NULL)
5300 1.7 christos *hp = NULL;
5301 1.7 christos
5302 1.1 christos if (symp != NULL)
5303 1.7 christos *symp = sym;
5304 1.7 christos
5305 1.7 christos if (symsecp != NULL)
5306 1.1 christos *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
5307 1.7 christos
5308 1.7 christos if (tls_maskp != NULL)
5309 1.7 christos {
5310 1.7 christos bfd_signed_vma *local_got;
5311 1.7 christos unsigned char *tls_mask;
5312 1.1 christos
5313 1.7 christos tls_mask = NULL;
5314 1.1 christos local_got = elf_local_got_refcounts (ibfd);
5315 1.1 christos if (local_got != NULL)
5316 1.1 christos {
5317 1.1 christos struct plt_entry **local_plt = (struct plt_entry **)
5318 1.1 christos (local_got + symtab_hdr->sh_info);
5319 1.7 christos unsigned char *lgot_masks = (unsigned char *)
5320 1.7 christos (local_plt + symtab_hdr->sh_info);
5321 1.1 christos tls_mask = &lgot_masks[r_symndx];
5322 1.7 christos }
5323 1.7 christos *tls_maskp = tls_mask;
5324 1.1 christos }
5325 1.1 christos }
5326 1.7 christos return TRUE;
5327 1.7 christos }
5328 1.7 christos
5329 1.1 christos /* Analyze inline PLT call relocations to see whether calls to locally
5331 1.7 christos defined functions can be converted to direct calls. */
5332 1.7 christos
5333 1.7 christos bfd_boolean
5334 1.7 christos ppc_elf_inline_plt (struct bfd_link_info *info)
5335 1.7 christos {
5336 1.7 christos struct ppc_elf_link_hash_table *htab;
5337 1.7 christos bfd *ibfd;
5338 1.7 christos asection *sec;
5339 1.7 christos bfd_vma low_vma, high_vma, limit;
5340 1.7 christos
5341 1.7 christos htab = ppc_elf_hash_table (info);
5342 1.7 christos if (htab == NULL)
5343 1.7 christos return FALSE;
5344 1.7 christos
5345 1.7 christos /* A bl insn can reach -0x2000000 to 0x1fffffc. The limit is
5346 1.7 christos reduced somewhat to cater for possible stubs that might be added
5347 1.7 christos between the call and its destination. */
5348 1.3 christos limit = 0x1e00000;
5349 1.7 christos low_vma = -1;
5350 1.7 christos high_vma = 0;
5351 1.7 christos for (sec = info->output_bfd->sections; sec != NULL; sec = sec->next)
5352 1.7 christos if ((sec->flags & (SEC_ALLOC | SEC_CODE)) == (SEC_ALLOC | SEC_CODE))
5353 1.7 christos {
5354 1.7 christos if (low_vma > sec->vma)
5355 1.7 christos low_vma = sec->vma;
5356 1.7 christos if (high_vma < sec->vma + sec->size)
5357 1.7 christos high_vma = sec->vma + sec->size;
5358 1.7 christos }
5359 1.7 christos
5360 1.7 christos /* If a "bl" can reach anywhere in local code sections, then we can
5361 1.7 christos convert all inline PLT sequences to direct calls when the symbol
5362 1.7 christos is local. */
5363 1.7 christos if (high_vma - low_vma < limit)
5364 1.7 christos {
5365 1.7 christos htab->can_convert_all_inline_plt = 1;
5366 1.7 christos return TRUE;
5367 1.7 christos }
5368 1.7 christos
5369 1.7 christos /* Otherwise, go looking through relocs for cases where a direct
5370 1.7 christos call won't reach. Mark the symbol on any such reloc to disable
5371 1.7 christos the optimization and keep the PLT entry as it seems likely that
5372 1.7 christos this will be better than creating trampolines. Note that this
5373 1.7 christos will disable the optimization for all inline PLT calls to a
5374 1.7 christos particular symbol, not just those that won't reach. The
5375 1.7 christos difficulty in doing a more precise optimization is that the
5376 1.7 christos linker needs to make a decision depending on whether a
5377 1.7 christos particular R_PPC_PLTCALL insn can be turned into a direct
5378 1.7 christos call, for each of the R_PPC_PLTSEQ and R_PPC_PLT16* insns in
5379 1.7 christos the sequence, and there is nothing that ties those relocs
5380 1.7 christos together except their symbol. */
5381 1.7 christos
5382 1.7 christos for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5383 1.7 christos {
5384 1.7 christos Elf_Internal_Shdr *symtab_hdr;
5385 1.7 christos Elf_Internal_Sym *local_syms;
5386 1.7 christos
5387 1.7 christos if (!is_ppc_elf (ibfd))
5388 1.7 christos continue;
5389 1.7 christos
5390 1.7 christos local_syms = NULL;
5391 1.7 christos symtab_hdr = &elf_symtab_hdr (ibfd);
5392 1.7 christos
5393 1.7 christos for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5394 1.7 christos if (sec->has_pltcall
5395 1.8 rin && !bfd_is_abs_section (sec->output_section))
5396 1.7 christos {
5397 1.7 christos Elf_Internal_Rela *relstart, *rel, *relend;
5398 1.7 christos
5399 1.7 christos /* Read the relocations. */
5400 1.7 christos relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5401 1.7 christos info->keep_memory);
5402 1.7 christos if (relstart == NULL)
5403 1.7 christos return FALSE;
5404 1.7 christos
5405 1.7 christos relend = relstart + sec->reloc_count;
5406 1.7 christos for (rel = relstart; rel < relend; rel++)
5407 1.7 christos {
5408 1.7 christos enum elf_ppc_reloc_type r_type;
5409 1.7 christos unsigned long r_symndx;
5410 1.7 christos asection *sym_sec;
5411 1.7 christos struct elf_link_hash_entry *h;
5412 1.7 christos Elf_Internal_Sym *sym;
5413 1.7 christos unsigned char *tls_maskp;
5414 1.7 christos
5415 1.7 christos r_type = ELF32_R_TYPE (rel->r_info);
5416 1.7 christos if (r_type != R_PPC_PLTCALL)
5417 1.7 christos continue;
5418 1.7 christos
5419 1.7 christos r_symndx = ELF32_R_SYM (rel->r_info);
5420 1.7 christos if (!get_sym_h (&h, &sym, &sym_sec, &tls_maskp, &local_syms,
5421 1.7 christos r_symndx, ibfd))
5422 1.7 christos {
5423 1.7 christos if (elf_section_data (sec)->relocs != relstart)
5424 1.7 christos free (relstart);
5425 1.7 christos if (local_syms != NULL
5426 1.7 christos && symtab_hdr->contents != (unsigned char *) local_syms)
5427 1.7 christos free (local_syms);
5428 1.7 christos return FALSE;
5429 1.7 christos }
5430 1.7 christos
5431 1.7 christos if (sym_sec != NULL && sym_sec->output_section != NULL)
5432 1.7 christos {
5433 1.7 christos bfd_vma from, to;
5434 1.7 christos if (h != NULL)
5435 1.7 christos to = h->root.u.def.value;
5436 1.7 christos else
5437 1.7 christos to = sym->st_value;
5438 1.7 christos to += (rel->r_addend
5439 1.7 christos + sym_sec->output_offset
5440 1.7 christos + sym_sec->output_section->vma);
5441 1.7 christos from = (rel->r_offset
5442 1.7 christos + sec->output_offset
5443 1.7 christos + sec->output_section->vma);
5444 1.7 christos if (to - from + limit < 2 * limit)
5445 1.7 christos *tls_maskp &= ~PLT_KEEP;
5446 1.7 christos }
5447 1.7 christos }
5448 1.7 christos if (elf_section_data (sec)->relocs != relstart)
5449 1.7 christos free (relstart);
5450 1.7 christos }
5451 1.7 christos
5452 1.7 christos if (local_syms != NULL
5453 1.7 christos && symtab_hdr->contents != (unsigned char *) local_syms)
5454 1.7 christos {
5455 1.7 christos if (!info->keep_memory)
5456 1.7 christos free (local_syms);
5457 1.7 christos else
5458 1.7 christos symtab_hdr->contents = (unsigned char *) local_syms;
5459 1.7 christos }
5460 1.7 christos }
5461 1.7 christos
5462 1.7 christos return TRUE;
5463 1.7 christos }
5464 1.7 christos
5465 1.7 christos /* Set plt output section type, htab->tls_get_addr, and call the
5466 1.7 christos generic ELF tls_setup function. */
5467 1.7 christos
5468 1.7 christos asection *
5469 1.1 christos ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5470 1.1 christos {
5471 1.1 christos struct ppc_elf_link_hash_table *htab;
5472 1.1 christos
5473 1.1 christos htab = ppc_elf_hash_table (info);
5474 1.1 christos htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5475 1.1 christos FALSE, FALSE, TRUE);
5476 1.1 christos if (htab->plt_type != PLT_NEW)
5477 1.1 christos htab->params->no_tls_get_addr_opt = TRUE;
5478 1.1 christos
5479 1.1 christos if (!htab->params->no_tls_get_addr_opt)
5480 1.1 christos {
5481 1.1 christos struct elf_link_hash_entry *opt, *tga;
5482 1.1 christos opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5483 1.1 christos FALSE, FALSE, TRUE);
5484 1.1 christos if (opt != NULL
5485 1.1 christos && (opt->root.type == bfd_link_hash_defined
5486 1.1 christos || opt->root.type == bfd_link_hash_defweak))
5487 1.7 christos {
5488 1.1 christos /* If glibc supports an optimized __tls_get_addr call stub,
5489 1.1 christos signalled by the presence of __tls_get_addr_opt, and we'll
5490 1.1 christos be calling __tls_get_addr via a plt call stub, then
5491 1.1 christos make __tls_get_addr point to __tls_get_addr_opt. */
5492 1.1 christos tga = htab->tls_get_addr;
5493 1.1 christos if (htab->elf.dynamic_sections_created
5494 1.1 christos && tga != NULL
5495 1.1 christos && (tga->type == STT_FUNC
5496 1.1 christos || tga->needs_plt)
5497 1.1 christos && !(SYMBOL_CALLS_LOCAL (info, tga)
5498 1.7 christos || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga)))
5499 1.1 christos {
5500 1.1 christos struct plt_entry *ent;
5501 1.1 christos for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5502 1.1 christos if (ent->plt.refcount > 0)
5503 1.1 christos break;
5504 1.1 christos if (ent != NULL)
5505 1.1 christos {
5506 1.1 christos tga->root.type = bfd_link_hash_indirect;
5507 1.1 christos tga->root.u.i.link = &opt->root;
5508 1.1 christos ppc_elf_copy_indirect_symbol (info, opt, tga);
5509 1.1 christos opt->mark = 1;
5510 1.1 christos if (opt->dynindx != -1)
5511 1.1 christos {
5512 1.1 christos /* Use __tls_get_addr_opt in dynamic relocations. */
5513 1.3 christos opt->dynindx = -1;
5514 1.1 christos _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5515 1.1 christos opt->dynstr_index);
5516 1.7 christos if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5517 1.7 christos return FALSE;
5518 1.1 christos }
5519 1.7 christos htab->tls_get_addr = opt;
5520 1.7 christos }
5521 1.1 christos }
5522 1.1 christos }
5523 1.1 christos else
5524 1.1 christos htab->params->no_tls_get_addr_opt = TRUE;
5525 1.1 christos }
5526 1.1 christos if (htab->plt_type == PLT_NEW
5527 1.1 christos && htab->elf.splt != NULL
5528 1.1 christos && htab->elf.splt->output_section != NULL)
5529 1.1 christos {
5530 1.1 christos elf_section_type (htab->elf.splt->output_section) = SHT_PROGBITS;
5531 1.1 christos elf_section_flags (htab->elf.splt->output_section) = SHF_ALLOC + SHF_WRITE;
5532 1.1 christos }
5533 1.1 christos
5534 1.1 christos return _bfd_elf_tls_setup (obfd, info);
5535 1.1 christos }
5536 1.1 christos
5537 1.1 christos /* Return TRUE iff REL is a branch reloc with a global symbol matching
5538 1.1 christos HASH. */
5539 1.1 christos
5540 1.1 christos static bfd_boolean
5541 1.1 christos branch_reloc_hash_match (const bfd *ibfd,
5542 1.1 christos const Elf_Internal_Rela *rel,
5543 1.1 christos const struct elf_link_hash_entry *hash)
5544 1.1 christos {
5545 1.1 christos Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5546 1.1 christos enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5547 1.1 christos unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5548 1.1 christos
5549 1.1 christos if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5550 1.1 christos {
5551 1.1 christos struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5552 1.1 christos struct elf_link_hash_entry *h;
5553 1.1 christos
5554 1.1 christos h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5555 1.1 christos while (h->root.type == bfd_link_hash_indirect
5556 1.1 christos || h->root.type == bfd_link_hash_warning)
5557 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
5558 1.1 christos if (h == hash)
5559 1.1 christos return TRUE;
5560 1.1 christos }
5561 1.1 christos return FALSE;
5562 1.1 christos }
5563 1.1 christos
5564 1.1 christos /* Run through all the TLS relocs looking for optimization
5565 1.3 christos opportunities. */
5566 1.1 christos
5567 1.1 christos bfd_boolean
5568 1.1 christos ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5569 1.1 christos struct bfd_link_info *info)
5570 1.1 christos {
5571 1.1 christos bfd *ibfd;
5572 1.1 christos asection *sec;
5573 1.1 christos struct ppc_elf_link_hash_table *htab;
5574 1.1 christos int pass;
5575 1.1 christos
5576 1.1 christos if (!bfd_link_executable (info))
5577 1.1 christos return TRUE;
5578 1.1 christos
5579 1.3 christos htab = ppc_elf_hash_table (info);
5580 1.1 christos if (htab == NULL)
5581 1.1 christos return FALSE;
5582 1.1 christos
5583 1.1 christos /* Make two passes through the relocs. First time check that tls
5584 1.1 christos relocs involved in setting up a tls_get_addr call are indeed
5585 1.1 christos followed by such a call. If they are not, don't do any tls
5586 1.1 christos optimization. On the second pass twiddle tls_mask flags to
5587 1.1 christos notify relocate_section that optimization can be done, and
5588 1.1 christos adjust got and plt refcounts. */
5589 1.1 christos for (pass = 0; pass < 2; ++pass)
5590 1.1 christos for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5591 1.1 christos {
5592 1.1 christos Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5593 1.1 christos asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5594 1.1 christos
5595 1.1 christos for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5596 1.1 christos if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5597 1.1 christos {
5598 1.1 christos Elf_Internal_Rela *relstart, *rel, *relend;
5599 1.1 christos int expecting_tls_get_addr = 0;
5600 1.1 christos
5601 1.1 christos /* Read the relocations. */
5602 1.7 christos relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5603 1.7 christos info->keep_memory);
5604 1.1 christos if (relstart == NULL)
5605 1.1 christos return FALSE;
5606 1.1 christos
5607 1.1 christos relend = relstart + sec->reloc_count;
5608 1.1 christos for (rel = relstart; rel < relend; rel++)
5609 1.1 christos {
5610 1.1 christos enum elf_ppc_reloc_type r_type;
5611 1.1 christos unsigned long r_symndx;
5612 1.1 christos struct elf_link_hash_entry *h = NULL;
5613 1.1 christos unsigned char *tls_mask;
5614 1.1 christos unsigned char tls_set, tls_clear;
5615 1.1 christos bfd_boolean is_local;
5616 1.1 christos bfd_signed_vma *got_count;
5617 1.1 christos
5618 1.1 christos r_symndx = ELF32_R_SYM (rel->r_info);
5619 1.1 christos if (r_symndx >= symtab_hdr->sh_info)
5620 1.1 christos {
5621 1.1 christos struct elf_link_hash_entry **sym_hashes;
5622 1.1 christos
5623 1.1 christos sym_hashes = elf_sym_hashes (ibfd);
5624 1.1 christos h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5625 1.1 christos while (h->root.type == bfd_link_hash_indirect
5626 1.1 christos || h->root.type == bfd_link_hash_warning)
5627 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
5628 1.1 christos }
5629 1.1 christos
5630 1.1 christos is_local = FALSE;
5631 1.1 christos if (h == NULL
5632 1.1 christos || !h->def_dynamic)
5633 1.1 christos is_local = TRUE;
5634 1.1 christos
5635 1.1 christos r_type = ELF32_R_TYPE (rel->r_info);
5636 1.1 christos /* If this section has old-style __tls_get_addr calls
5637 1.1 christos without marker relocs, then check that each
5638 1.1 christos __tls_get_addr call reloc is preceded by a reloc
5639 1.1 christos that conceivably belongs to the __tls_get_addr arg
5640 1.1 christos setup insn. If we don't find matching arg setup
5641 1.1 christos relocs, don't do any tls optimization. */
5642 1.1 christos if (pass == 0
5643 1.1 christos && sec->has_tls_get_addr_call
5644 1.1 christos && h != NULL
5645 1.1 christos && h == htab->tls_get_addr
5646 1.1 christos && !expecting_tls_get_addr
5647 1.1 christos && is_branch_reloc (r_type))
5648 1.1 christos {
5649 1.1 christos info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5650 1.1 christos "TLS optimization disabled\n",
5651 1.1 christos ibfd, sec, rel->r_offset);
5652 1.7 christos if (elf_section_data (sec)->relocs != relstart)
5653 1.1 christos free (relstart);
5654 1.1 christos return TRUE;
5655 1.1 christos }
5656 1.1 christos
5657 1.1 christos expecting_tls_get_addr = 0;
5658 1.1 christos switch (r_type)
5659 1.1 christos {
5660 1.1 christos case R_PPC_GOT_TLSLD16:
5661 1.1 christos case R_PPC_GOT_TLSLD16_LO:
5662 1.1 christos expecting_tls_get_addr = 1;
5663 1.1 christos /* Fall through. */
5664 1.1 christos
5665 1.1 christos case R_PPC_GOT_TLSLD16_HI:
5666 1.1 christos case R_PPC_GOT_TLSLD16_HA:
5667 1.1 christos /* These relocs should never be against a symbol
5668 1.1 christos defined in a shared lib. Leave them alone if
5669 1.1 christos that turns out to be the case. */
5670 1.7 christos if (!is_local)
5671 1.1 christos continue;
5672 1.1 christos
5673 1.1 christos /* LD -> LE */
5674 1.1 christos tls_set = 0;
5675 1.1 christos tls_clear = TLS_LD;
5676 1.1 christos break;
5677 1.1 christos
5678 1.1 christos case R_PPC_GOT_TLSGD16:
5679 1.1 christos case R_PPC_GOT_TLSGD16_LO:
5680 1.1 christos expecting_tls_get_addr = 1;
5681 1.1 christos /* Fall through. */
5682 1.1 christos
5683 1.1 christos case R_PPC_GOT_TLSGD16_HI:
5684 1.1 christos case R_PPC_GOT_TLSGD16_HA:
5685 1.1 christos if (is_local)
5686 1.1 christos /* GD -> LE */
5687 1.1 christos tls_set = 0;
5688 1.1 christos else
5689 1.1 christos /* GD -> IE */
5690 1.1 christos tls_set = TLS_TLS | TLS_TPRELGD;
5691 1.1 christos tls_clear = TLS_GD;
5692 1.1 christos break;
5693 1.1 christos
5694 1.1 christos case R_PPC_GOT_TPREL16:
5695 1.1 christos case R_PPC_GOT_TPREL16_LO:
5696 1.1 christos case R_PPC_GOT_TPREL16_HI:
5697 1.1 christos case R_PPC_GOT_TPREL16_HA:
5698 1.1 christos if (is_local)
5699 1.7 christos {
5700 1.7 christos /* IE -> LE */
5701 1.7 christos tls_set = 0;
5702 1.7 christos tls_clear = TLS_TPREL;
5703 1.7 christos break;
5704 1.7 christos }
5705 1.7 christos else
5706 1.7 christos continue;
5707 1.7 christos
5708 1.7 christos case R_PPC_TLSGD:
5709 1.7 christos case R_PPC_TLSLD:
5710 1.7 christos if (rel + 1 < relend
5711 1.7 christos && is_plt_seq_reloc (ELF32_R_TYPE (rel[1].r_info)))
5712 1.7 christos {
5713 1.7 christos if (pass != 0
5714 1.7 christos && ELF32_R_TYPE (rel[1].r_info) != R_PPC_PLTSEQ)
5715 1.7 christos {
5716 1.7 christos r_type = ELF32_R_TYPE (rel[1].r_info);
5717 1.7 christos r_symndx = ELF32_R_SYM (rel[1].r_info);
5718 1.7 christos if (r_symndx >= symtab_hdr->sh_info)
5719 1.7 christos {
5720 1.7 christos struct elf_link_hash_entry **sym_hashes;
5721 1.7 christos
5722 1.7 christos sym_hashes = elf_sym_hashes (ibfd);
5723 1.7 christos h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5724 1.7 christos while (h->root.type == bfd_link_hash_indirect
5725 1.7 christos || h->root.type == bfd_link_hash_warning)
5726 1.7 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
5727 1.7 christos if (h != NULL)
5728 1.7 christos {
5729 1.7 christos struct plt_entry *ent = NULL;
5730 1.7 christos bfd_vma addend = 0;
5731 1.7 christos
5732 1.7 christos if (bfd_link_pic (info))
5733 1.1 christos addend = rel->r_addend;
5734 1.1 christos ent = find_plt_ent (&h->plt.plist,
5735 1.1 christos got2, addend);
5736 1.1 christos if (ent != NULL
5737 1.1 christos && ent->plt.refcount > 0)
5738 1.1 christos ent->plt.refcount -= 1;
5739 1.1 christos }
5740 1.1 christos }
5741 1.1 christos }
5742 1.1 christos continue;
5743 1.1 christos }
5744 1.1 christos expecting_tls_get_addr = 2;
5745 1.7 christos tls_set = 0;
5746 1.1 christos tls_clear = 0;
5747 1.1 christos break;
5748 1.1 christos
5749 1.1 christos default:
5750 1.1 christos continue;
5751 1.1 christos }
5752 1.1 christos
5753 1.1 christos if (pass == 0)
5754 1.1 christos {
5755 1.1 christos if (!expecting_tls_get_addr
5756 1.1 christos || !sec->has_tls_get_addr_call)
5757 1.1 christos continue;
5758 1.1 christos
5759 1.1 christos if (rel + 1 < relend
5760 1.1 christos && branch_reloc_hash_match (ibfd, rel + 1,
5761 1.1 christos htab->tls_get_addr))
5762 1.1 christos continue;
5763 1.1 christos
5764 1.1 christos /* Uh oh, we didn't find the expected call. We
5765 1.1 christos could just mark this symbol to exclude it
5766 1.1 christos from tls optimization but it's safer to skip
5767 1.1 christos the entire optimization. */
5768 1.1 christos info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5769 1.1 christos "TLS optimization disabled\n"),
5770 1.1 christos ibfd, sec, rel->r_offset);
5771 1.1 christos if (elf_section_data (sec)->relocs != relstart)
5772 1.1 christos free (relstart);
5773 1.1 christos return TRUE;
5774 1.7 christos }
5775 1.1 christos
5776 1.1 christos if (h != NULL)
5777 1.1 christos {
5778 1.1 christos tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5779 1.1 christos got_count = &h->got.refcount;
5780 1.1 christos }
5781 1.7 christos else
5782 1.7 christos {
5783 1.1 christos bfd_signed_vma *lgot_refs;
5784 1.1 christos struct plt_entry **local_plt;
5785 1.1 christos unsigned char *lgot_masks;
5786 1.1 christos
5787 1.7 christos lgot_refs = elf_local_got_refcounts (ibfd);
5788 1.7 christos if (lgot_refs == NULL)
5789 1.7 christos abort ();
5790 1.7 christos local_plt = (struct plt_entry **)
5791 1.7 christos (lgot_refs + symtab_hdr->sh_info);
5792 1.7 christos lgot_masks = (unsigned char *)
5793 1.7 christos (local_plt + symtab_hdr->sh_info);
5794 1.7 christos tls_mask = &lgot_masks[r_symndx];
5795 1.7 christos got_count = &lgot_refs[r_symndx];
5796 1.7 christos }
5797 1.7 christos
5798 1.7 christos /* If we don't have old-style __tls_get_addr calls
5799 1.7 christos without TLSGD/TLSLD marker relocs, and we haven't
5800 1.7 christos found a new-style __tls_get_addr call with a
5801 1.7 christos marker for this symbol, then we either have a
5802 1.7 christos broken object file or an -mlongcall style
5803 1.7 christos indirect call to __tls_get_addr without a marker.
5804 1.7 christos Disable optimization in this case. */
5805 1.7 christos if ((tls_clear & (TLS_GD | TLS_LD)) != 0
5806 1.7 christos && !sec->has_tls_get_addr_call
5807 1.7 christos && ((*tls_mask & (TLS_TLS | TLS_MARK))
5808 1.7 christos != (TLS_TLS | TLS_MARK)))
5809 1.7 christos continue;
5810 1.7 christos
5811 1.7 christos if (expecting_tls_get_addr)
5812 1.7 christos {
5813 1.7 christos struct plt_entry *ent;
5814 1.7 christos bfd_vma addend = 0;
5815 1.7 christos
5816 1.7 christos if (bfd_link_pic (info)
5817 1.7 christos && (ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24
5818 1.1 christos || ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTCALL))
5819 1.1 christos addend = rel[1].r_addend;
5820 1.1 christos ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5821 1.1 christos got2, addend);
5822 1.1 christos if (ent != NULL && ent->plt.refcount > 0)
5823 1.1 christos ent->plt.refcount -= 1;
5824 1.1 christos
5825 1.1 christos if (expecting_tls_get_addr == 2)
5826 1.1 christos continue;
5827 1.1 christos }
5828 1.1 christos
5829 1.1 christos if (tls_set == 0)
5830 1.1 christos {
5831 1.1 christos /* We managed to get rid of a got entry. */
5832 1.1 christos if (*got_count > 0)
5833 1.7 christos *got_count -= 1;
5834 1.1 christos }
5835 1.1 christos
5836 1.1 christos *tls_mask |= tls_set;
5837 1.7 christos *tls_mask &= ~tls_clear;
5838 1.1 christos }
5839 1.7 christos
5840 1.7 christos if (elf_section_data (sec)->relocs != relstart)
5841 1.1 christos free (relstart);
5842 1.1 christos }
5843 1.1 christos }
5844 1.1 christos htab->do_tls_opt = 1;
5845 1.1 christos return TRUE;
5846 1.1 christos }
5847 1.1 christos
5848 1.7 christos /* Find dynamic relocs for H that apply to read-only sections. */
5850 1.1 christos
5851 1.7 christos static asection *
5852 1.7 christos readonly_dynrelocs (struct elf_link_hash_entry *h)
5853 1.7 christos {
5854 1.7 christos struct elf_dyn_relocs *p;
5855 1.7 christos
5856 1.7 christos for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5857 1.7 christos {
5858 1.7 christos asection *s = p->sec->output_section;
5859 1.7 christos
5860 1.7 christos if (s != NULL && (s->flags & SEC_READONLY) != 0)
5861 1.7 christos return p->sec;
5862 1.7 christos }
5863 1.7 christos return NULL;
5864 1.7 christos }
5865 1.7 christos
5866 1.7 christos /* Return true if we have dynamic relocs against H or any of its weak
5867 1.7 christos aliases, that apply to read-only sections. Cannot be used after
5868 1.7 christos size_dynamic_sections. */
5869 1.7 christos
5870 1.7 christos static bfd_boolean
5871 1.7 christos alias_readonly_dynrelocs (struct elf_link_hash_entry *h)
5872 1.7 christos {
5873 1.7 christos struct ppc_elf_link_hash_entry *eh = ppc_elf_hash_entry (h);
5874 1.7 christos do
5875 1.7 christos {
5876 1.7 christos if (readonly_dynrelocs (&eh->elf))
5877 1.7 christos return TRUE;
5878 1.7 christos eh = ppc_elf_hash_entry (eh->elf.u.alias);
5879 1.7 christos } while (eh != NULL && &eh->elf != h);
5880 1.7 christos
5881 1.7 christos return FALSE;
5882 1.1 christos }
5883 1.1 christos
5884 1.1 christos /* Return whether H has pc-relative dynamic relocs. */
5885 1.1 christos
5886 1.1 christos static bfd_boolean
5887 1.1 christos pc_dynrelocs (struct elf_link_hash_entry *h)
5888 1.1 christos {
5889 1.1 christos struct elf_dyn_relocs *p;
5890 1.1 christos
5891 1.1 christos for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5892 1.1 christos if (p->pc_count != 0)
5893 1.1 christos return TRUE;
5894 1.1 christos return FALSE;
5895 1.1 christos }
5896 1.1 christos
5897 1.1 christos /* Adjust a symbol defined by a dynamic object and referenced by a
5898 1.1 christos regular object. The current definition is in some section of the
5899 1.1 christos dynamic object, but we're not including those sections. We have to
5900 1.1 christos change the definition to something the rest of the link can
5901 1.1 christos understand. */
5902 1.1 christos
5903 1.1 christos static bfd_boolean
5904 1.1 christos ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5905 1.1 christos struct elf_link_hash_entry *h)
5906 1.1 christos {
5907 1.1 christos struct ppc_elf_link_hash_table *htab;
5908 1.7 christos asection *s;
5909 1.1 christos
5910 1.1 christos #ifdef DEBUG
5911 1.1 christos fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5912 1.1 christos h->root.root.string);
5913 1.1 christos #endif
5914 1.1 christos
5915 1.1 christos /* Make sure we know what is going on here. */
5916 1.1 christos htab = ppc_elf_hash_table (info);
5917 1.1 christos BFD_ASSERT (htab->elf.dynobj != NULL
5918 1.7 christos && (h->needs_plt
5919 1.7 christos || h->type == STT_GNU_IFUNC
5920 1.7 christos || h->is_weakalias
5921 1.7 christos || (h->def_dynamic
5922 1.7 christos && h->ref_regular
5923 1.7 christos && !h->def_regular)));
5924 1.7 christos
5925 1.1 christos /* Deal with function syms. */
5926 1.1 christos if (h->type == STT_FUNC
5927 1.1 christos || h->type == STT_GNU_IFUNC
5928 1.1 christos || h->needs_plt)
5929 1.1 christos {
5930 1.1 christos bfd_boolean local = (SYMBOL_CALLS_LOCAL (info, h)
5931 1.1 christos || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
5932 1.1 christos /* Discard dyn_relocs when non-pic if we've decided that a
5933 1.7 christos function symbol is local. */
5934 1.7 christos if (!bfd_link_pic (info) && local)
5935 1.7 christos ppc_elf_hash_entry (h)->dyn_relocs = NULL;
5936 1.7 christos
5937 1.1 christos /* Clear procedure linkage table information for any symbol that
5938 1.1 christos won't need a .plt entry. */
5939 1.1 christos struct plt_entry *ent;
5940 1.1 christos for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5941 1.1 christos if (ent->plt.refcount > 0)
5942 1.1 christos break;
5943 1.1 christos if (ent == NULL
5944 1.1 christos || (h->type != STT_GNU_IFUNC
5945 1.1 christos && local
5946 1.1 christos && (htab->can_convert_all_inline_plt
5947 1.1 christos || (ppc_elf_hash_entry (h)->tls_mask
5948 1.1 christos & (TLS_TLS | PLT_KEEP)) != PLT_KEEP)))
5949 1.1 christos {
5950 1.3 christos /* A PLT entry is not required/allowed when:
5951 1.1 christos
5952 1.1 christos 1. We are not using ld.so; because then the PLT entry
5953 1.1 christos can't be set up, so we can't use one. In this case,
5954 1.3 christos ppc_elf_adjust_dynamic_symbol won't even be called.
5955 1.3 christos
5956 1.3 christos 2. GC has rendered the entry unused.
5957 1.7 christos
5958 1.7 christos 3. We know for certain that a call to this symbol
5959 1.7 christos will go to this object, or will remain undefined. */
5960 1.7 christos h->plt.plist = NULL;
5961 1.7 christos h->needs_plt = 0;
5962 1.7 christos h->pointer_equality_needed = 0;
5963 1.7 christos }
5964 1.7 christos else
5965 1.7 christos {
5966 1.7 christos /* Taking a function's address in a read/write section
5967 1.3 christos doesn't require us to define the function symbol in the
5968 1.3 christos executable on a plt call stub. A dynamic reloc can
5969 1.7 christos be used instead, giving better runtime performance.
5970 1.3 christos (Calls via that function pointer don't need to bounce
5971 1.3 christos through the plt call stub.) Similarly, use a dynamic
5972 1.7 christos reloc for a weak reference when possible, allowing the
5973 1.7 christos resolution of the symbol to be set at load time rather
5974 1.7 christos than link time. */
5975 1.7 christos if ((h->pointer_equality_needed
5976 1.7 christos || (h->non_got_ref
5977 1.7 christos && !h->ref_regular_nonweak
5978 1.7 christos && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
5979 1.7 christos && !htab->is_vxworks
5980 1.7 christos && !ppc_elf_hash_entry (h)->has_sda_refs
5981 1.1 christos && !readonly_dynrelocs (h))
5982 1.3 christos {
5983 1.7 christos h->pointer_equality_needed = 0;
5984 1.1 christos /* If we haven't seen a branch reloc and the symbol
5985 1.1 christos isn't an ifunc then we don't need a plt entry. */
5986 1.1 christos if (!h->needs_plt && h->type != STT_GNU_IFUNC)
5987 1.1 christos h->plt.plist = NULL;
5988 1.1 christos }
5989 1.1 christos else if (!bfd_link_pic (info))
5990 1.1 christos /* We are going to be defining the function symbol on the
5991 1.1 christos plt stub, so no dyn_relocs needed when non-pic. */
5992 1.7 christos ppc_elf_hash_entry (h)->dyn_relocs = NULL;
5993 1.1 christos }
5994 1.7 christos h->protected_def = 0;
5995 1.7 christos /* Function symbols can't have copy relocs. */
5996 1.7 christos return TRUE;
5997 1.7 christos }
5998 1.7 christos else
5999 1.7 christos h->plt.plist = NULL;
6000 1.7 christos
6001 1.7 christos /* If this is a weak symbol, and there is a real definition, the
6002 1.1 christos processor independent code will have arranged for us to see the
6003 1.1 christos real definition first, and we can just use the same value. */
6004 1.1 christos if (h->is_weakalias)
6005 1.1 christos {
6006 1.1 christos struct elf_link_hash_entry *def = weakdef (h);
6007 1.1 christos BFD_ASSERT (def->root.type == bfd_link_hash_defined);
6008 1.1 christos h->root.u.def.section = def->root.u.def.section;
6009 1.1 christos h->root.u.def.value = def->root.u.def.value;
6010 1.1 christos if (def->root.u.def.section == htab->elf.sdynbss
6011 1.1 christos || def->root.u.def.section == htab->elf.sdynrelro
6012 1.3 christos || def->root.u.def.section == htab->dynsbss)
6013 1.3 christos ppc_elf_hash_entry (h)->dyn_relocs = NULL;
6014 1.3 christos return TRUE;
6015 1.3 christos }
6016 1.3 christos
6017 1.1 christos /* This is a reference to a symbol defined by a dynamic object which
6018 1.1 christos is not a function. */
6019 1.1 christos
6020 1.1 christos /* If we are creating a shared library, we must presume that the
6021 1.3 christos only references to the symbol are via the global offset table.
6022 1.3 christos For such cases we need not do anything here; the relocations will
6023 1.3 christos be handled correctly by relocate_section. */
6024 1.3 christos if (bfd_link_pic (info))
6025 1.3 christos {
6026 1.3 christos h->protected_def = 0;
6027 1.3 christos return TRUE;
6028 1.3 christos }
6029 1.3 christos
6030 1.3 christos /* If there are no references to this symbol that do not use the
6031 1.3 christos GOT, we don't need to generate a copy reloc. */
6032 1.3 christos if (!h->non_got_ref)
6033 1.3 christos {
6034 1.3 christos h->protected_def = 0;
6035 1.3 christos return TRUE;
6036 1.3 christos }
6037 1.3 christos
6038 1.3 christos /* Protected variables do not work with .dynbss. The copy in
6039 1.3 christos .dynbss won't be used by the shared library with the protected
6040 1.3 christos definition for the variable. Editing to PIC, or text relocations
6041 1.3 christos are preferable to an incorrect program. */
6042 1.3 christos if (h->protected_def)
6043 1.7 christos {
6044 1.1 christos if (ELIMINATE_COPY_RELOCS
6045 1.7 christos && ppc_elf_hash_entry (h)->has_addr16_ha
6046 1.1 christos && ppc_elf_hash_entry (h)->has_addr16_lo
6047 1.1 christos && htab->params->pic_fixup == 0
6048 1.1 christos && info->disable_target_specific_optimizations <= 1)
6049 1.1 christos htab->params->pic_fixup = 1;
6050 1.1 christos return TRUE;
6051 1.1 christos }
6052 1.1 christos
6053 1.1 christos /* If -z nocopyreloc was given, we won't generate them either. */
6054 1.1 christos if (info->nocopyreloc)
6055 1.7 christos return TRUE;
6056 1.7 christos
6057 1.1 christos /* If we don't find any dynamic relocs in read-only sections, then
6058 1.1 christos we'll be keeping the dynamic relocs and avoiding the copy reloc.
6059 1.1 christos We can't do this if there are any small data relocations. This
6060 1.1 christos doesn't work on VxWorks, where we can not have dynamic
6061 1.1 christos relocations (other than copy and jump slot relocations) in an
6062 1.1 christos executable. */
6063 1.1 christos if (ELIMINATE_COPY_RELOCS
6064 1.1 christos && !ppc_elf_hash_entry (h)->has_sda_refs
6065 1.1 christos && !htab->is_vxworks
6066 1.1 christos && !h->def_regular
6067 1.1 christos && !alias_readonly_dynrelocs (h))
6068 1.1 christos return TRUE;
6069 1.1 christos
6070 1.1 christos /* We must allocate the symbol in our .dynbss section, which will
6071 1.1 christos become part of the .bss section of the executable. There will be
6072 1.7 christos an entry for this symbol in the .dynsym section. The dynamic
6073 1.7 christos object will contain position independent code, so all references
6074 1.1 christos from the dynamic object to this symbol will go through the global
6075 1.7 christos offset table. The dynamic linker will use the .dynsym entry to
6076 1.1 christos determine the address it must put in the global offset table, so
6077 1.1 christos both the dynamic object and the regular object will refer to the
6078 1.1 christos same memory location for the variable.
6079 1.1 christos
6080 1.1 christos Of course, if the symbol is referenced using SDAREL relocs, we
6081 1.1 christos must instead allocate it in .sbss. */
6082 1.7 christos if (ppc_elf_hash_entry (h)->has_sda_refs)
6083 1.7 christos s = htab->dynsbss;
6084 1.7 christos else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
6085 1.1 christos s = htab->elf.sdynrelro;
6086 1.1 christos else
6087 1.7 christos s = htab->elf.sdynbss;
6088 1.7 christos BFD_ASSERT (s != NULL);
6089 1.1 christos
6090 1.7 christos if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
6091 1.1 christos {
6092 1.1 christos asection *srel;
6093 1.1 christos
6094 1.1 christos /* We must generate a R_PPC_COPY reloc to tell the dynamic
6095 1.1 christos linker to copy the initial value out of the dynamic object
6096 1.7 christos and into the runtime process image. */
6097 1.7 christos if (ppc_elf_hash_entry (h)->has_sda_refs)
6098 1.3 christos srel = htab->relsbss;
6099 1.1 christos else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
6100 1.1 christos srel = htab->elf.sreldynrelro;
6101 1.1 christos else
6102 1.1 christos srel = htab->elf.srelbss;
6103 1.1 christos BFD_ASSERT (srel != NULL);
6104 1.1 christos srel->size += sizeof (Elf32_External_Rela);
6105 1.1 christos h->needs_copy = 1;
6106 1.1 christos }
6107 1.1 christos
6108 1.1 christos /* We no longer want dyn_relocs. */
6109 1.1 christos ppc_elf_hash_entry (h)->dyn_relocs = NULL;
6110 1.1 christos return _bfd_elf_adjust_dynamic_copy (info, h, s);
6111 1.1 christos }
6112 1.1 christos
6113 1.1 christos /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
6115 1.1 christos xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
6116 1.1 christos specifying the addend on the plt relocation. For -fpic code, the sym
6117 1.1 christos is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
6118 1.3 christos xxxxxxxx.got2.plt_pic32.<callee>. */
6119 1.1 christos
6120 1.1 christos static bfd_boolean
6121 1.1 christos add_stub_sym (struct plt_entry *ent,
6122 1.1 christos struct elf_link_hash_entry *h,
6123 1.1 christos struct bfd_link_info *info)
6124 1.1 christos {
6125 1.1 christos struct elf_link_hash_entry *sh;
6126 1.1 christos size_t len1, len2, len3;
6127 1.1 christos char *name;
6128 1.1 christos const char *stub;
6129 1.1 christos struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6130 1.1 christos
6131 1.1 christos if (bfd_link_pic (info))
6132 1.1 christos stub = ".plt_pic32.";
6133 1.1 christos else
6134 1.1 christos stub = ".plt_call32.";
6135 1.1 christos
6136 1.1 christos len1 = strlen (h->root.root.string);
6137 1.1 christos len2 = strlen (stub);
6138 1.1 christos len3 = 0;
6139 1.1 christos if (ent->sec)
6140 1.1 christos len3 = strlen (ent->sec->name);
6141 1.1 christos name = bfd_malloc (len1 + len2 + len3 + 9);
6142 1.1 christos if (name == NULL)
6143 1.1 christos return FALSE;
6144 1.1 christos sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
6145 1.1 christos if (ent->sec)
6146 1.1 christos memcpy (name + 8, ent->sec->name, len3);
6147 1.1 christos memcpy (name + 8 + len3, stub, len2);
6148 1.1 christos memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
6149 1.3 christos sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
6150 1.1 christos if (sh == NULL)
6151 1.1 christos return FALSE;
6152 1.1 christos if (sh->root.type == bfd_link_hash_new)
6153 1.1 christos {
6154 1.1 christos sh->root.type = bfd_link_hash_defined;
6155 1.1 christos sh->root.u.def.section = htab->glink;
6156 1.1 christos sh->root.u.def.value = ent->glink_offset;
6157 1.1 christos sh->ref_regular = 1;
6158 1.1 christos sh->def_regular = 1;
6159 1.1 christos sh->ref_regular_nonweak = 1;
6160 1.1 christos sh->forced_local = 1;
6161 1.1 christos sh->non_elf = 0;
6162 1.1 christos sh->root.linker_def = 1;
6163 1.1 christos }
6164 1.1 christos return TRUE;
6165 1.7 christos }
6166 1.7 christos
6167 1.1 christos /* Allocate NEED contiguous space in .got, and return the offset.
6168 1.1 christos Handles allocation of the got header when crossing 32k. */
6169 1.1 christos
6170 1.1 christos static bfd_vma
6171 1.1 christos allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
6172 1.1 christos {
6173 1.1 christos bfd_vma where;
6174 1.1 christos unsigned int max_before_header;
6175 1.1 christos
6176 1.1 christos if (htab->plt_type == PLT_VXWORKS)
6177 1.1 christos {
6178 1.7 christos where = htab->elf.sgot->size;
6179 1.7 christos htab->elf.sgot->size += need;
6180 1.1 christos }
6181 1.7 christos else
6182 1.7 christos {
6183 1.1 christos max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
6184 1.7 christos if (need <= htab->got_gap)
6185 1.7 christos {
6186 1.1 christos where = max_before_header - htab->got_gap;
6187 1.1 christos htab->got_gap -= need;
6188 1.1 christos }
6189 1.1 christos else
6190 1.1 christos {
6191 1.7 christos if (htab->elf.sgot->size + need > max_before_header
6192 1.7 christos && htab->elf.sgot->size <= max_before_header)
6193 1.7 christos {
6194 1.7 christos htab->got_gap = max_before_header - htab->elf.sgot->size;
6195 1.7 christos htab->elf.sgot->size = max_before_header + htab->got_header_size;
6196 1.7 christos }
6197 1.7 christos where = htab->elf.sgot->size;
6198 1.7 christos htab->elf.sgot->size += need;
6199 1.7 christos }
6200 1.7 christos }
6201 1.7 christos return where;
6202 1.7 christos }
6203 1.7 christos
6204 1.7 christos /* Calculate size of GOT entries for symbol given its TLS_MASK.
6205 1.7 christos TLS_LD is excluded because those go in a special GOT slot. */
6206 1.7 christos
6207 1.7 christos static inline unsigned int
6208 1.7 christos got_entries_needed (int tls_mask)
6209 1.7 christos {
6210 1.7 christos unsigned int need;
6211 1.7 christos if ((tls_mask & TLS_TLS) == 0)
6212 1.7 christos need = 4;
6213 1.7 christos else
6214 1.7 christos {
6215 1.7 christos need = 0;
6216 1.7 christos if ((tls_mask & TLS_GD) != 0)
6217 1.7 christos need += 8;
6218 1.7 christos if ((tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
6219 1.7 christos need += 4;
6220 1.7 christos if ((tls_mask & TLS_DTPREL) != 0)
6221 1.7 christos need += 4;
6222 1.7 christos }
6223 1.7 christos return need;
6224 1.7 christos }
6225 1.7 christos
6226 1.7 christos /* Calculate size of relocs needed for symbol given its TLS_MASK and
6227 1.7 christos NEEDed GOT entries. KNOWN says a TPREL offset can be calculated at
6228 1.7 christos link time. */
6229 1.7 christos
6230 1.7 christos static inline unsigned int
6231 1.7 christos got_relocs_needed (int tls_mask, unsigned int need, bfd_boolean known)
6232 1.7 christos {
6233 1.7 christos /* All the entries we allocated need relocs.
6234 1.7 christos Except IE in executable with a local symbol. We could also omit
6235 1.7 christos the DTPREL reloc on the second word of a GD entry under the same
6236 1.7 christos condition as that for IE, but ld.so needs to differentiate
6237 1.7 christos LD and GD entries. */
6238 1.7 christos if (known && (tls_mask & TLS_TLS) != 0
6239 1.7 christos && (tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
6240 1.7 christos need -= 4;
6241 1.7 christos return need * sizeof (Elf32_External_Rela) / 4;
6242 1.7 christos }
6243 1.7 christos
6244 1.7 christos /* If H is undefined, make it dynamic if that makes sense. */
6245 1.7 christos
6246 1.7 christos static bfd_boolean
6247 1.7 christos ensure_undef_dynamic (struct bfd_link_info *info,
6248 1.7 christos struct elf_link_hash_entry *h)
6249 1.7 christos {
6250 1.1 christos struct elf_link_hash_table *htab = elf_hash_table (info);
6251 1.1 christos
6252 1.1 christos if (htab->dynamic_sections_created
6253 1.1 christos && ((info->dynamic_undefined_weak != 0
6254 1.1 christos && h->root.type == bfd_link_hash_undefweak)
6255 1.1 christos || h->root.type == bfd_link_hash_undefined)
6256 1.1 christos && h->dynindx == -1
6257 1.1 christos && !h->forced_local
6258 1.1 christos && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
6259 1.7 christos return bfd_elf_link_record_dynamic_symbol (info, h);
6260 1.1 christos return TRUE;
6261 1.1 christos }
6262 1.1 christos
6263 1.1 christos /* Allocate space in associated reloc sections for dynamic relocs. */
6264 1.1 christos
6265 1.1 christos static bfd_boolean
6266 1.3 christos allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
6267 1.3 christos {
6268 1.3 christos struct bfd_link_info *info = inf;
6269 1.3 christos struct ppc_elf_link_hash_entry *eh;
6270 1.3 christos struct ppc_elf_link_hash_table *htab;
6271 1.3 christos struct elf_dyn_relocs *p;
6272 1.3 christos bfd_boolean dyn;
6273 1.1 christos
6274 1.1 christos if (h->root.type == bfd_link_hash_indirect)
6275 1.1 christos return TRUE;
6276 1.1 christos
6277 1.7 christos htab = ppc_elf_hash_table (info);
6278 1.7 christos eh = (struct ppc_elf_link_hash_entry *) h;
6279 1.1 christos if (eh->elf.got.refcount > 0
6280 1.1 christos || (ELIMINATE_COPY_RELOCS
6281 1.7 christos && !eh->elf.def_regular
6282 1.1 christos && eh->elf.protected_def
6283 1.7 christos && eh->has_addr16_ha
6284 1.7 christos && eh->has_addr16_lo
6285 1.7 christos && htab->params->pic_fixup > 0))
6286 1.7 christos {
6287 1.7 christos unsigned int need;
6288 1.7 christos
6289 1.1 christos /* Make sure this symbol is output as a dynamic symbol. */
6290 1.1 christos if (!ensure_undef_dynamic (info, &eh->elf))
6291 1.7 christos return FALSE;
6292 1.1 christos
6293 1.1 christos need = 0;
6294 1.1 christos if ((eh->tls_mask & (TLS_TLS | TLS_LD)) == (TLS_TLS | TLS_LD))
6295 1.1 christos {
6296 1.1 christos if (!eh->elf.def_dynamic)
6297 1.3 christos /* We'll just use htab->tlsld_got.offset. This should
6298 1.7 christos always be the case. It's a little odd if we have
6299 1.7 christos a local dynamic reloc against a non-local symbol. */
6300 1.7 christos htab->tlsld_got.refcount += 1;
6301 1.7 christos else
6302 1.7 christos need += 8;
6303 1.7 christos }
6304 1.7 christos need += got_entries_needed (eh->tls_mask);
6305 1.7 christos if (need == 0)
6306 1.7 christos eh->elf.got.offset = (bfd_vma) -1;
6307 1.3 christos else
6308 1.7 christos {
6309 1.7 christos eh->elf.got.offset = allocate_got (htab, need);
6310 1.7 christos if ((bfd_link_pic (info)
6311 1.7 christos || (htab->elf.dynamic_sections_created
6312 1.7 christos && eh->elf.dynindx != -1
6313 1.3 christos && !SYMBOL_REFERENCES_LOCAL (info, &eh->elf)))
6314 1.7 christos && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &eh->elf))
6315 1.7 christos {
6316 1.1 christos asection *rsec;
6317 1.1 christos bfd_boolean tprel_known = (bfd_link_executable (info)
6318 1.1 christos && SYMBOL_REFERENCES_LOCAL (info,
6319 1.1 christos &eh->elf));
6320 1.1 christos
6321 1.1 christos need = got_relocs_needed (eh->tls_mask, need, tprel_known);
6322 1.7 christos if ((eh->tls_mask & (TLS_TLS | TLS_LD)) == (TLS_TLS | TLS_LD)
6323 1.7 christos && eh->elf.def_dynamic)
6324 1.7 christos need -= sizeof (Elf32_External_Rela);
6325 1.7 christos rsec = htab->elf.srelgot;
6326 1.7 christos if (eh->elf.type == STT_GNU_IFUNC)
6327 1.7 christos rsec = htab->elf.irelplt;
6328 1.7 christos rsec->size += need;
6329 1.7 christos }
6330 1.7 christos }
6331 1.7 christos }
6332 1.7 christos else
6333 1.7 christos eh->elf.got.offset = (bfd_vma) -1;
6334 1.7 christos
6335 1.7 christos /* If no dynamic sections we can't have dynamic relocs, except for
6336 1.7 christos IFUNCs which are handled even in static executables. */
6337 1.7 christos if (!htab->elf.dynamic_sections_created
6338 1.7 christos && h->type != STT_GNU_IFUNC)
6339 1.7 christos eh->dyn_relocs = NULL;
6340 1.1 christos
6341 1.1 christos /* Discard relocs on undefined symbols that must be local. */
6342 1.1 christos else if (h->root.type == bfd_link_hash_undefined
6343 1.1 christos && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
6344 1.1 christos eh->dyn_relocs = NULL;
6345 1.1 christos
6346 1.7 christos /* Also discard relocs on undefined weak syms with non-default
6347 1.1 christos visibility, or when dynamic_undefined_weak says so. */
6348 1.1 christos else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
6349 1.1 christos eh->dyn_relocs = NULL;
6350 1.1 christos
6351 1.1 christos if (eh->dyn_relocs == NULL)
6352 1.1 christos ;
6353 1.1 christos
6354 1.1 christos /* In the shared -Bsymbolic case, discard space allocated for
6355 1.1 christos dynamic pc-relative relocs against symbols which turn out to be
6356 1.1 christos defined in regular objects. For the normal shared case, discard
6357 1.1 christos space for relocs that have become local due to symbol visibility
6358 1.1 christos changes. */
6359 1.1 christos else if (bfd_link_pic (info))
6360 1.1 christos {
6361 1.1 christos /* Relocs that use pc_count are those that appear on a call insn,
6362 1.1 christos or certain REL relocs (see must_be_dyn_reloc) that can be
6363 1.7 christos generated via assembly. We want calls to protected symbols to
6364 1.7 christos resolve directly to the function rather than going via the plt.
6365 1.7 christos If people want function pointer comparisons to work as expected
6366 1.7 christos then they should avoid writing weird assembly. */
6367 1.7 christos if (SYMBOL_CALLS_LOCAL (info, h))
6368 1.7 christos {
6369 1.7 christos struct elf_dyn_relocs **pp;
6370 1.7 christos
6371 1.7 christos for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6372 1.7 christos {
6373 1.7 christos p->count -= p->pc_count;
6374 1.7 christos p->pc_count = 0;
6375 1.7 christos if (p->count == 0)
6376 1.7 christos *pp = p->next;
6377 1.7 christos else
6378 1.7 christos pp = &p->next;
6379 1.7 christos }
6380 1.7 christos }
6381 1.7 christos
6382 1.7 christos if (htab->is_vxworks)
6383 1.7 christos {
6384 1.7 christos struct elf_dyn_relocs **pp;
6385 1.7 christos
6386 1.7 christos for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6387 1.7 christos {
6388 1.7 christos if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
6389 1.7 christos *pp = p->next;
6390 1.7 christos else
6391 1.7 christos pp = &p->next;
6392 1.7 christos }
6393 1.7 christos }
6394 1.7 christos
6395 1.7 christos if (eh->dyn_relocs != NULL)
6396 1.7 christos {
6397 1.7 christos /* Make sure this symbol is output as a dynamic symbol. */
6398 1.7 christos if (!ensure_undef_dynamic (info, h))
6399 1.7 christos return FALSE;
6400 1.7 christos }
6401 1.7 christos }
6402 1.7 christos else if (ELIMINATE_COPY_RELOCS)
6403 1.7 christos {
6404 1.7 christos /* For the non-pic case, discard space for relocs against
6405 1.7 christos symbols which turn out to need copy relocs or are not
6406 1.7 christos dynamic. */
6407 1.7 christos if (h->dynamic_adjusted
6408 1.7 christos && !h->def_regular
6409 1.7 christos && !ELF_COMMON_DEF_P (h)
6410 1.7 christos && !(h->protected_def
6411 1.7 christos && eh->has_addr16_ha
6412 1.7 christos && eh->has_addr16_lo
6413 1.7 christos && htab->params->pic_fixup > 0))
6414 1.7 christos {
6415 1.7 christos /* Make sure this symbol is output as a dynamic symbol. */
6416 1.7 christos if (!ensure_undef_dynamic (info, h))
6417 1.7 christos return FALSE;
6418 1.7 christos
6419 1.7 christos if (h->dynindx == -1)
6420 1.7 christos eh->dyn_relocs = NULL;
6421 1.7 christos }
6422 1.7 christos else
6423 1.7 christos eh->dyn_relocs = NULL;
6424 1.7 christos }
6425 1.7 christos
6426 1.7 christos /* Allocate space. */
6427 1.7 christos for (p = eh->dyn_relocs; p != NULL; p = p->next)
6428 1.7 christos {
6429 1.7 christos asection *sreloc = elf_section_data (p->sec)->sreloc;
6430 1.7 christos if (eh->elf.type == STT_GNU_IFUNC)
6431 1.7 christos sreloc = htab->elf.irelplt;
6432 1.7 christos sreloc->size += p->count * sizeof (Elf32_External_Rela);
6433 1.7 christos }
6434 1.7 christos
6435 1.7 christos /* Handle PLT relocs. Done last, after dynindx has settled.
6436 1.7 christos We might need a PLT entry when the symbol
6437 1.7 christos a) is dynamic, or
6438 1.7 christos b) is an ifunc, or
6439 1.7 christos c) has plt16 relocs and has been processed by adjust_dynamic_symbol, or
6440 1.7 christos d) has plt16 relocs and we are linking statically. */
6441 1.7 christos dyn = htab->elf.dynamic_sections_created && h->dynindx != -1;
6442 1.7 christos if (dyn
6443 1.7 christos || h->type == STT_GNU_IFUNC
6444 1.7 christos || (h->needs_plt && h->dynamic_adjusted)
6445 1.7 christos || (h->needs_plt
6446 1.7 christos && h->def_regular
6447 1.7 christos && !htab->elf.dynamic_sections_created
6448 1.7 christos && !htab->can_convert_all_inline_plt
6449 1.7 christos && (ppc_elf_hash_entry (h)->tls_mask
6450 1.7 christos & (TLS_TLS | PLT_KEEP)) == PLT_KEEP))
6451 1.7 christos {
6452 1.7 christos struct plt_entry *ent;
6453 1.7 christos bfd_boolean doneone = FALSE;
6454 1.7 christos bfd_vma plt_offset = 0, glink_offset = (bfd_vma) -1;
6455 1.7 christos
6456 1.7 christos for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6457 1.7 christos if (ent->plt.refcount > 0)
6458 1.7 christos {
6459 1.7 christos asection *s = htab->elf.splt;
6460 1.7 christos
6461 1.7 christos if (!dyn)
6462 1.7 christos {
6463 1.7 christos if (h->type == STT_GNU_IFUNC)
6464 1.7 christos s = htab->elf.iplt;
6465 1.7 christos else
6466 1.7 christos s = htab->pltlocal;
6467 1.7 christos }
6468 1.7 christos
6469 1.7 christos if (htab->plt_type == PLT_NEW || !dyn)
6470 1.7 christos {
6471 1.7 christos if (!doneone)
6472 1.7 christos {
6473 1.7 christos plt_offset = s->size;
6474 1.7 christos s->size += 4;
6475 1.7 christos }
6476 1.7 christos ent->plt.offset = plt_offset;
6477 1.7 christos
6478 1.7 christos if (s == htab->pltlocal)
6479 1.7 christos ent->glink_offset = glink_offset;
6480 1.7 christos else
6481 1.7 christos {
6482 1.7 christos s = htab->glink;
6483 1.7 christos if (!doneone || bfd_link_pic (info))
6484 1.7 christos {
6485 1.7 christos glink_offset = s->size;
6486 1.7 christos s->size += GLINK_ENTRY_SIZE (htab, h);
6487 1.7 christos }
6488 1.7 christos if (!doneone
6489 1.7 christos && !bfd_link_pic (info)
6490 1.7 christos && h->def_dynamic
6491 1.7 christos && !h->def_regular)
6492 1.7 christos {
6493 1.7 christos h->root.u.def.section = s;
6494 1.7 christos h->root.u.def.value = glink_offset;
6495 1.7 christos }
6496 1.7 christos ent->glink_offset = glink_offset;
6497 1.7 christos
6498 1.7 christos if (htab->params->emit_stub_syms
6499 1.7 christos && !add_stub_sym (ent, h, info))
6500 1.7 christos return FALSE;
6501 1.7 christos }
6502 1.7 christos }
6503 1.7 christos else
6504 1.7 christos {
6505 1.7 christos if (!doneone)
6506 1.7 christos {
6507 1.7 christos /* If this is the first .plt entry, make room
6508 1.7 christos for the special first entry. */
6509 1.7 christos if (s->size == 0)
6510 1.7 christos s->size += htab->plt_initial_entry_size;
6511 1.7 christos
6512 1.7 christos /* The PowerPC PLT is actually composed of two
6513 1.7 christos parts, the first part is 2 words (for a load
6514 1.7 christos and a jump), and then there is a remaining
6515 1.7 christos word available at the end. */
6516 1.7 christos plt_offset = (htab->plt_initial_entry_size
6517 1.7 christos + (htab->plt_slot_size
6518 1.7 christos * ((s->size
6519 1.7 christos - htab->plt_initial_entry_size)
6520 1.7 christos / htab->plt_entry_size)));
6521 1.7 christos
6522 1.7 christos /* If this symbol is not defined in a regular
6523 1.1 christos file, and we are not generating a shared
6524 1.7 christos library, then set the symbol to this location
6525 1.7 christos in the .plt. This is to avoid text
6526 1.7 christos relocations, and is required to make
6527 1.7 christos function pointers compare as equal between
6528 1.7 christos the normal executable and the shared library. */
6529 1.7 christos if (! bfd_link_pic (info)
6530 1.7 christos && h->def_dynamic
6531 1.7 christos && !h->def_regular)
6532 1.7 christos {
6533 1.7 christos h->root.u.def.section = s;
6534 1.7 christos h->root.u.def.value = plt_offset;
6535 1.7 christos }
6536 1.1 christos
6537 1.7 christos /* Make room for this entry. */
6538 1.7 christos s->size += htab->plt_entry_size;
6539 1.7 christos /* After the 8192nd entry, room for two entries
6540 1.7 christos is allocated. */
6541 1.7 christos if (htab->plt_type == PLT_OLD
6542 1.7 christos && (s->size - htab->plt_initial_entry_size)
6543 1.7 christos / htab->plt_entry_size
6544 1.7 christos > PLT_NUM_SINGLE_ENTRIES)
6545 1.7 christos s->size += htab->plt_entry_size;
6546 1.7 christos }
6547 1.7 christos ent->plt.offset = plt_offset;
6548 1.7 christos }
6549 1.7 christos
6550 1.7 christos /* We also need to make an entry in the .rela.plt section. */
6551 1.7 christos if (!doneone)
6552 1.7 christos {
6553 1.7 christos if (!dyn)
6554 1.7 christos {
6555 1.7 christos if (h->type == STT_GNU_IFUNC)
6556 1.1 christos {
6557 1.7 christos s = htab->elf.irelplt;
6558 1.7 christos s->size += sizeof (Elf32_External_Rela);
6559 1.7 christos }
6560 1.7 christos else if (bfd_link_pic (info))
6561 1.7 christos {
6562 1.7 christos s = htab->relpltlocal;
6563 1.7 christos s->size += sizeof (Elf32_External_Rela);
6564 1.7 christos }
6565 1.7 christos }
6566 1.7 christos else
6567 1.7 christos {
6568 1.7 christos htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
6569 1.7 christos
6570 1.1 christos if (htab->plt_type == PLT_VXWORKS)
6571 1.7 christos {
6572 1.7 christos /* Allocate space for the unloaded relocations. */
6573 1.7 christos if (!bfd_link_pic (info)
6574 1.7 christos && htab->elf.dynamic_sections_created)
6575 1.1 christos {
6576 1.7 christos if (ent->plt.offset
6577 1.7 christos == (bfd_vma) htab->plt_initial_entry_size)
6578 1.7 christos {
6579 1.7 christos htab->srelplt2->size
6580 1.7 christos += (sizeof (Elf32_External_Rela)
6581 1.7 christos * VXWORKS_PLTRESOLVE_RELOCS);
6582 1.7 christos }
6583 1.7 christos
6584 1.7 christos htab->srelplt2->size
6585 1.7 christos += (sizeof (Elf32_External_Rela)
6586 1.1 christos * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
6587 1.7 christos }
6588 1.1 christos
6589 1.7 christos /* Every PLT entry has an associated GOT entry in
6590 1.7 christos .got.plt. */
6591 1.1 christos htab->elf.sgotplt->size += 4;
6592 1.1 christos }
6593 1.7 christos }
6594 1.1 christos doneone = TRUE;
6595 1.7 christos }
6596 1.7 christos }
6597 1.1 christos else
6598 1.1 christos ent->plt.offset = (bfd_vma) -1;
6599 1.1 christos
6600 1.1 christos if (!doneone)
6601 1.1 christos {
6602 1.1 christos h->plt.plist = NULL;
6603 1.1 christos h->needs_plt = 0;
6604 1.1 christos }
6605 1.1 christos }
6606 1.7 christos else
6607 1.1 christos {
6608 1.7 christos h->plt.plist = NULL;
6609 1.7 christos h->needs_plt = 0;
6610 1.1 christos }
6611 1.1 christos
6612 1.1 christos return TRUE;
6613 1.7 christos }
6614 1.7 christos
6615 1.1 christos /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6616 1.7 christos read-only sections. */
6617 1.7 christos
6618 1.7 christos static bfd_boolean
6619 1.7 christos maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
6620 1.7 christos {
6621 1.7 christos asection *sec;
6622 1.7 christos
6623 1.7 christos if (h->root.type == bfd_link_hash_indirect)
6624 1.7 christos return TRUE;
6625 1.7 christos
6626 1.7 christos sec = readonly_dynrelocs (h);
6627 1.7 christos if (sec != NULL)
6628 1.7 christos {
6629 1.1 christos struct bfd_link_info *info = (struct bfd_link_info *) info_p;
6630 1.1 christos
6631 1.1 christos info->flags |= DF_TEXTREL;
6632 1.1 christos /* xgettext:c-format */
6633 1.1 christos info->callbacks->minfo (_("%pB: dynamic relocation against `%pT' "
6634 1.1 christos "in read-only section `%pA'\n"),
6635 1.1 christos sec->owner, h->root.root.string, sec);
6636 1.1 christos if ((info->warn_shared_textrel && bfd_link_pic (info))
6637 1.1 christos || info->error_textrel)
6638 1.1 christos /* xgettext:c-format */
6639 1.1 christos info->callbacks->einfo (_("%P: %pB: warning: relocation against `%s' "
6640 1.1 christos "in read-only section `%pA'\n"),
6641 1.1 christos sec->owner, h->root.root.string, sec);
6642 1.1 christos
6643 1.1 christos /* Not an error, just cut short the traversal. */
6644 1.1 christos return FALSE;
6645 1.1 christos }
6646 1.1 christos return TRUE;
6647 1.1 christos }
6648 1.1 christos
6649 1.1 christos static const unsigned char glink_eh_frame_cie[] =
6650 1.1 christos {
6651 1.1 christos 0, 0, 0, 16, /* length. */
6652 1.1 christos 0, 0, 0, 0, /* id. */
6653 1.3 christos 1, /* CIE version. */
6654 1.1 christos 'z', 'R', 0, /* Augmentation string. */
6655 1.1 christos 4, /* Code alignment. */
6656 1.1 christos 0x7c, /* Data alignment. */
6657 1.1 christos 65, /* RA reg. */
6658 1.1 christos 1, /* Augmentation size. */
6659 1.1 christos DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6660 1.1 christos DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6661 1.1 christos };
6662 1.1 christos
6663 1.1 christos /* Set the sizes of the dynamic sections. */
6664 1.1 christos
6665 1.1 christos static bfd_boolean
6666 1.1 christos ppc_elf_size_dynamic_sections (bfd *output_bfd,
6667 1.1 christos struct bfd_link_info *info)
6668 1.1 christos {
6669 1.1 christos struct ppc_elf_link_hash_table *htab;
6670 1.1 christos asection *s;
6671 1.3 christos bfd_boolean relocs;
6672 1.1 christos bfd *ibfd;
6673 1.1 christos
6674 1.1 christos #ifdef DEBUG
6675 1.1 christos fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6676 1.1 christos #endif
6677 1.1 christos
6678 1.1 christos htab = ppc_elf_hash_table (info);
6679 1.1 christos BFD_ASSERT (htab->elf.dynobj != NULL);
6680 1.1 christos
6681 1.1 christos if (elf_hash_table (info)->dynamic_sections_created)
6682 1.1 christos {
6683 1.1 christos /* Set the contents of the .interp section to the interpreter. */
6684 1.1 christos if (bfd_link_executable (info) && !info->nointerp)
6685 1.1 christos {
6686 1.1 christos s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6687 1.3 christos BFD_ASSERT (s != NULL);
6688 1.1 christos s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6689 1.1 christos s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6690 1.1 christos }
6691 1.1 christos }
6692 1.1 christos
6693 1.1 christos if (htab->plt_type == PLT_OLD)
6694 1.1 christos htab->got_header_size = 16;
6695 1.1 christos else if (htab->plt_type == PLT_NEW)
6696 1.1 christos htab->got_header_size = 12;
6697 1.1 christos
6698 1.1 christos /* Set up .got offsets for local syms, and space for local dynamic
6699 1.1 christos relocs. */
6700 1.1 christos for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
6701 1.1 christos {
6702 1.3 christos bfd_signed_vma *local_got;
6703 1.1 christos bfd_signed_vma *end_local_got;
6704 1.3 christos struct plt_entry **local_plt;
6705 1.1 christos struct plt_entry **end_local_plt;
6706 1.1 christos char *lgot_masks;
6707 1.1 christos bfd_size_type locsymcount;
6708 1.1 christos Elf_Internal_Shdr *symtab_hdr;
6709 1.1 christos
6710 1.1 christos if (!is_ppc_elf (ibfd))
6711 1.1 christos continue;
6712 1.1 christos
6713 1.1 christos for (s = ibfd->sections; s != NULL; s = s->next)
6714 1.1 christos {
6715 1.1 christos struct ppc_dyn_relocs *p;
6716 1.1 christos
6717 1.1 christos for (p = ((struct ppc_dyn_relocs *)
6718 1.1 christos elf_section_data (s)->local_dynrel);
6719 1.1 christos p != NULL;
6720 1.1 christos p = p->next)
6721 1.1 christos {
6722 1.1 christos if (!bfd_is_abs_section (p->sec)
6723 1.1 christos && bfd_is_abs_section (p->sec->output_section))
6724 1.1 christos {
6725 1.1 christos /* Input section has been discarded, either because
6726 1.1 christos it is a copy of a linkonce section or due to
6727 1.3 christos linker script /DISCARD/, so we'll be discarding
6728 1.7 christos the relocs too. */
6729 1.1 christos }
6730 1.1 christos else if (htab->is_vxworks
6731 1.1 christos && strcmp (p->sec->output_section->name,
6732 1.1 christos ".tls_vars") == 0)
6733 1.7 christos {
6734 1.7 christos /* Relocations in vxworks .tls_vars sections are
6735 1.7 christos handled specially by the loader. */
6736 1.7 christos }
6737 1.7 christos else if (p->count != 0)
6738 1.1 christos {
6739 1.1 christos asection *sreloc = elf_section_data (p->sec)->sreloc;
6740 1.1 christos if (p->ifunc)
6741 1.1 christos sreloc = htab->elf.irelplt;
6742 1.1 christos sreloc->size += p->count * sizeof (Elf32_External_Rela);
6743 1.1 christos if ((p->sec->output_section->flags
6744 1.1 christos & (SEC_READONLY | SEC_ALLOC))
6745 1.1 christos == (SEC_READONLY | SEC_ALLOC))
6746 1.1 christos {
6747 1.1 christos info->flags |= DF_TEXTREL;
6748 1.1 christos info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"),
6749 1.1 christos p->sec->owner, p->sec);
6750 1.1 christos }
6751 1.1 christos }
6752 1.1 christos }
6753 1.1 christos }
6754 1.1 christos
6755 1.1 christos local_got = elf_local_got_refcounts (ibfd);
6756 1.7 christos if (!local_got)
6757 1.7 christos continue;
6758 1.7 christos
6759 1.7 christos symtab_hdr = &elf_symtab_hdr (ibfd);
6760 1.1 christos locsymcount = symtab_hdr->sh_info;
6761 1.1 christos end_local_got = local_got + locsymcount;
6762 1.1 christos local_plt = (struct plt_entry **) end_local_got;
6763 1.1 christos end_local_plt = local_plt + locsymcount;
6764 1.1 christos lgot_masks = (char *) end_local_plt;
6765 1.3 christos
6766 1.3 christos for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6767 1.7 christos if (*local_got > 0)
6768 1.7 christos {
6769 1.7 christos unsigned int need;
6770 1.7 christos if ((*lgot_masks & (TLS_TLS | TLS_LD)) == (TLS_TLS | TLS_LD))
6771 1.7 christos htab->tlsld_got.refcount += 1;
6772 1.7 christos need = got_entries_needed (*lgot_masks);
6773 1.7 christos if (need == 0)
6774 1.7 christos *local_got = (bfd_vma) -1;
6775 1.3 christos else
6776 1.1 christos {
6777 1.1 christos *local_got = allocate_got (htab, need);
6778 1.1 christos if (bfd_link_pic (info))
6779 1.1 christos {
6780 1.1 christos asection *srel;
6781 1.1 christos bfd_boolean tprel_known = bfd_link_executable (info);
6782 1.1 christos
6783 1.1 christos need = got_relocs_needed (*lgot_masks, need, tprel_known);
6784 1.1 christos srel = htab->elf.srelgot;
6785 1.7 christos if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC)
6786 1.7 christos srel = htab->elf.irelplt;
6787 1.1 christos srel->size += need;
6788 1.1 christos }
6789 1.1 christos }
6790 1.7 christos }
6791 1.1 christos else
6792 1.1 christos *local_got = (bfd_vma) -1;
6793 1.1 christos
6794 1.1 christos if (htab->is_vxworks)
6795 1.7 christos continue;
6796 1.7 christos
6797 1.7 christos /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6798 1.7 christos lgot_masks = (char *) end_local_plt;
6799 1.7 christos for (; local_plt < end_local_plt; ++local_plt, ++lgot_masks)
6800 1.7 christos {
6801 1.7 christos struct plt_entry *ent;
6802 1.7 christos bfd_boolean doneone = FALSE;
6803 1.7 christos bfd_vma plt_offset = 0, glink_offset = (bfd_vma) -1;
6804 1.7 christos
6805 1.1 christos for (ent = *local_plt; ent != NULL; ent = ent->next)
6806 1.1 christos if (ent->plt.refcount > 0)
6807 1.1 christos {
6808 1.1 christos if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC)
6809 1.1 christos s = htab->elf.iplt;
6810 1.1 christos else if (htab->can_convert_all_inline_plt
6811 1.1 christos || (*lgot_masks & (TLS_TLS | PLT_KEEP)) != PLT_KEEP)
6812 1.1 christos {
6813 1.7 christos ent->plt.offset = (bfd_vma) -1;
6814 1.1 christos continue;
6815 1.7 christos }
6816 1.1 christos else
6817 1.7 christos s = htab->pltlocal;
6818 1.1 christos
6819 1.1 christos if (!doneone)
6820 1.1 christos {
6821 1.1 christos plt_offset = s->size;
6822 1.1 christos s->size += 4;
6823 1.7 christos }
6824 1.7 christos ent->plt.offset = plt_offset;
6825 1.7 christos
6826 1.7 christos if (s != htab->pltlocal && (!doneone || bfd_link_pic (info)))
6827 1.7 christos {
6828 1.7 christos s = htab->glink;
6829 1.7 christos glink_offset = s->size;
6830 1.7 christos s->size += GLINK_ENTRY_SIZE (htab, NULL);
6831 1.7 christos }
6832 1.7 christos ent->glink_offset = glink_offset;
6833 1.1 christos
6834 1.1 christos if (!doneone)
6835 1.1 christos {
6836 1.1 christos if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC)
6837 1.1 christos {
6838 1.1 christos s = htab->elf.irelplt;
6839 1.1 christos s->size += sizeof (Elf32_External_Rela);
6840 1.1 christos }
6841 1.1 christos else if (bfd_link_pic (info))
6842 1.1 christos {
6843 1.1 christos s = htab->relpltlocal;
6844 1.1 christos s->size += sizeof (Elf32_External_Rela);
6845 1.1 christos }
6846 1.1 christos doneone = TRUE;
6847 1.3 christos }
6848 1.7 christos }
6849 1.1 christos else
6850 1.1 christos ent->plt.offset = (bfd_vma) -1;
6851 1.1 christos }
6852 1.1 christos }
6853 1.7 christos
6854 1.1 christos /* Allocate space for global sym dynamic relocs. */
6855 1.1 christos elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6856 1.1 christos
6857 1.1 christos if (htab->tlsld_got.refcount > 0)
6858 1.1 christos {
6859 1.1 christos htab->tlsld_got.offset = allocate_got (htab, 8);
6860 1.1 christos if (bfd_link_pic (info))
6861 1.7 christos htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
6862 1.1 christos }
6863 1.7 christos else
6864 1.1 christos htab->tlsld_got.offset = (bfd_vma) -1;
6865 1.1 christos
6866 1.7 christos if (htab->elf.sgot != NULL && htab->plt_type != PLT_VXWORKS)
6867 1.1 christos {
6868 1.1 christos unsigned int g_o_t = 32768;
6869 1.1 christos
6870 1.1 christos /* If we haven't allocated the header, do so now. When we get here,
6871 1.3 christos for old plt/got the got size will be 0 to 32764 (not allocated),
6872 1.1 christos or 32780 to 65536 (header allocated). For new plt/got, the
6873 1.1 christos corresponding ranges are 0 to 32768 and 32780 to 65536. */
6874 1.3 christos if (htab->elf.sgot->size <= 32768)
6875 1.3 christos {
6876 1.3 christos g_o_t = htab->elf.sgot->size;
6877 1.3 christos if (htab->plt_type == PLT_OLD)
6878 1.3 christos g_o_t += 4;
6879 1.3 christos htab->elf.sgot->size += htab->got_header_size;
6880 1.3 christos }
6881 1.3 christos
6882 1.3 christos htab->elf.hgot->root.u.def.value = g_o_t;
6883 1.3 christos }
6884 1.3 christos if (bfd_link_pic (info))
6885 1.3 christos {
6886 1.3 christos struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6887 1.1 christos
6888 1.1 christos sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6889 1.1 christos sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6890 1.1 christos }
6891 1.1 christos if (info->emitrelocations)
6892 1.1 christos {
6893 1.1 christos struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6894 1.1 christos
6895 1.7 christos if (sda != NULL && sda->ref_regular)
6896 1.7 christos sda->root.u.def.section->flags |= SEC_KEEP;
6897 1.1 christos sda = htab->sdata[1].sym;
6898 1.3 christos if (sda != NULL && sda->ref_regular)
6899 1.3 christos sda->root.u.def.section->flags |= SEC_KEEP;
6900 1.1 christos }
6901 1.1 christos
6902 1.3 christos if (htab->glink != NULL
6903 1.1 christos && htab->glink->size != 0
6904 1.1 christos && htab->elf.dynamic_sections_created)
6905 1.1 christos {
6906 1.1 christos htab->glink_pltresolve = htab->glink->size;
6907 1.1 christos /* Space for the branch table. */
6908 1.1 christos htab->glink->size
6909 1.1 christos += htab->elf.srelplt->size / (sizeof (Elf32_External_Rela) / 4) - 4;
6910 1.1 christos /* Pad out to align the start of PLTresolve. */
6911 1.1 christos htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6912 1.1 christos ? 63 : 15);
6913 1.1 christos htab->glink->size += GLINK_PLTRESOLVE;
6914 1.1 christos
6915 1.1 christos if (htab->params->emit_stub_syms)
6916 1.1 christos {
6917 1.1 christos struct elf_link_hash_entry *sh;
6918 1.1 christos sh = elf_link_hash_lookup (&htab->elf, "__glink",
6919 1.3 christos TRUE, FALSE, FALSE);
6920 1.1 christos if (sh == NULL)
6921 1.1 christos return FALSE;
6922 1.1 christos if (sh->root.type == bfd_link_hash_new)
6923 1.1 christos {
6924 1.1 christos sh->root.type = bfd_link_hash_defined;
6925 1.1 christos sh->root.u.def.section = htab->glink;
6926 1.1 christos sh->root.u.def.value = htab->glink_pltresolve;
6927 1.1 christos sh->ref_regular = 1;
6928 1.1 christos sh->def_regular = 1;
6929 1.1 christos sh->ref_regular_nonweak = 1;
6930 1.1 christos sh->forced_local = 1;
6931 1.1 christos sh->non_elf = 0;
6932 1.1 christos sh->root.linker_def = 1;
6933 1.1 christos }
6934 1.1 christos sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6935 1.3 christos TRUE, FALSE, FALSE);
6936 1.1 christos if (sh == NULL)
6937 1.1 christos return FALSE;
6938 1.1 christos if (sh->root.type == bfd_link_hash_new)
6939 1.1 christos {
6940 1.1 christos sh->root.type = bfd_link_hash_defined;
6941 1.1 christos sh->root.u.def.section = htab->glink;
6942 1.1 christos sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6943 1.1 christos sh->ref_regular = 1;
6944 1.1 christos sh->def_regular = 1;
6945 1.1 christos sh->ref_regular_nonweak = 1;
6946 1.1 christos sh->forced_local = 1;
6947 1.1 christos sh->non_elf = 0;
6948 1.3 christos sh->root.linker_def = 1;
6949 1.1 christos }
6950 1.1 christos }
6951 1.1 christos }
6952 1.1 christos
6953 1.1 christos if (htab->glink != NULL
6954 1.1 christos && htab->glink->size != 0
6955 1.1 christos && htab->glink_eh_frame != NULL
6956 1.1 christos && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6957 1.1 christos && _bfd_elf_eh_frame_present (info))
6958 1.1 christos {
6959 1.1 christos s = htab->glink_eh_frame;
6960 1.1 christos s->size = sizeof (glink_eh_frame_cie) + 20;
6961 1.1 christos if (bfd_link_pic (info))
6962 1.1 christos {
6963 1.1 christos s->size += 4;
6964 1.1 christos if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6965 1.1 christos s->size += 4;
6966 1.7 christos }
6967 1.7 christos }
6968 1.1 christos
6969 1.1 christos /* We've now determined the sizes of the various dynamic sections.
6970 1.1 christos Allocate memory for them. */
6971 1.1 christos relocs = FALSE;
6972 1.1 christos for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6973 1.1 christos {
6974 1.1 christos bfd_boolean strip_section = TRUE;
6975 1.1 christos
6976 1.1 christos if ((s->flags & SEC_LINKER_CREATED) == 0)
6977 1.7 christos continue;
6978 1.7 christos
6979 1.1 christos if (s == htab->elf.splt
6980 1.1 christos || s == htab->elf.sgot)
6981 1.7 christos {
6982 1.1 christos /* We'd like to strip these sections if they aren't needed, but if
6983 1.7 christos we've exported dynamic symbols from them we must leave them.
6984 1.7 christos It's too late to tell BFD to get rid of the symbols. */
6985 1.3 christos if (htab->elf.hplt != NULL)
6986 1.3 christos strip_section = FALSE;
6987 1.3 christos /* Strip this section if we don't need it; see the
6988 1.3 christos comment below. */
6989 1.3 christos }
6990 1.1 christos else if (s == htab->elf.iplt
6991 1.1 christos || s == htab->pltlocal
6992 1.3 christos || s == htab->glink
6993 1.1 christos || s == htab->glink_eh_frame
6994 1.1 christos || s == htab->elf.sgotplt
6995 1.1 christos || s == htab->sbss
6996 1.1 christos || s == htab->elf.sdynbss
6997 1.1 christos || s == htab->elf.sdynrelro
6998 1.1 christos || s == htab->dynsbss)
6999 1.1 christos {
7000 1.1 christos /* Strip these too. */
7001 1.1 christos }
7002 1.1 christos else if (s == htab->sdata[0].section
7003 1.1 christos || s == htab->sdata[1].section)
7004 1.1 christos {
7005 1.1 christos strip_section = (s->flags & SEC_KEEP) == 0;
7006 1.1 christos }
7007 1.1 christos else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
7008 1.1 christos ".rela"))
7009 1.1 christos {
7010 1.1 christos if (s->size != 0)
7011 1.1 christos {
7012 1.1 christos /* Remember whether there are any relocation sections. */
7013 1.1 christos relocs = TRUE;
7014 1.1 christos
7015 1.1 christos /* We use the reloc_count field as a counter if we need
7016 1.1 christos to copy relocs into the output file. */
7017 1.1 christos s->reloc_count = 0;
7018 1.1 christos }
7019 1.1 christos }
7020 1.1 christos else
7021 1.1 christos {
7022 1.1 christos /* It's not one of our sections, so don't allocate space. */
7023 1.1 christos continue;
7024 1.1 christos }
7025 1.1 christos
7026 1.1 christos if (s->size == 0 && strip_section)
7027 1.1 christos {
7028 1.1 christos /* If we don't need this section, strip it from the
7029 1.1 christos output file. This is mostly to handle .rela.bss and
7030 1.1 christos .rela.plt. We must create both sections in
7031 1.1 christos create_dynamic_sections, because they must be created
7032 1.1 christos before the linker maps input sections to output
7033 1.1 christos sections. The linker does that before
7034 1.1 christos adjust_dynamic_symbol is called, and it is that
7035 1.1 christos function which decides whether anything needs to go
7036 1.1 christos into these sections. */
7037 1.1 christos s->flags |= SEC_EXCLUDE;
7038 1.1 christos continue;
7039 1.1 christos }
7040 1.1 christos
7041 1.1 christos if ((s->flags & SEC_HAS_CONTENTS) == 0)
7042 1.1 christos continue;
7043 1.1 christos
7044 1.1 christos /* Allocate memory for the section contents. */
7045 1.1 christos s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
7046 1.1 christos if (s->contents == NULL)
7047 1.3 christos return FALSE;
7048 1.1 christos }
7049 1.1 christos
7050 1.1 christos if (htab->elf.dynamic_sections_created)
7051 1.1 christos {
7052 1.1 christos /* Add some entries to the .dynamic section. We fill in the
7053 1.7 christos values later, in ppc_elf_finish_dynamic_sections, but we
7054 1.1 christos must add the entries now so that we get the correct size for
7055 1.1 christos the .dynamic section. The DT_DEBUG entry is filled in by the
7056 1.1 christos dynamic linker and used by the debugger. */
7057 1.1 christos #define add_dynamic_entry(TAG, VAL) \
7058 1.1 christos _bfd_elf_add_dynamic_entry (info, TAG, VAL)
7059 1.1 christos
7060 1.1 christos if (bfd_link_executable (info))
7061 1.1 christos {
7062 1.3 christos if (!add_dynamic_entry (DT_DEBUG, 0))
7063 1.3 christos return FALSE;
7064 1.3 christos }
7065 1.1 christos
7066 1.1 christos if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
7067 1.1 christos {
7068 1.3 christos if (!add_dynamic_entry (DT_PLTGOT, 0)
7069 1.1 christos || !add_dynamic_entry (DT_PLTRELSZ, 0)
7070 1.1 christos || !add_dynamic_entry (DT_PLTREL, DT_RELA)
7071 1.3 christos || !add_dynamic_entry (DT_JMPREL, 0))
7072 1.1 christos return FALSE;
7073 1.1 christos }
7074 1.1 christos
7075 1.1 christos if (htab->plt_type == PLT_NEW
7076 1.1 christos && htab->glink != NULL
7077 1.1 christos && htab->glink->size != 0)
7078 1.1 christos {
7079 1.1 christos if (!add_dynamic_entry (DT_PPC_GOT, 0))
7080 1.1 christos return FALSE;
7081 1.1 christos if (!htab->params->no_tls_get_addr_opt
7082 1.1 christos && htab->tls_get_addr != NULL
7083 1.1 christos && htab->tls_get_addr->plt.plist != NULL
7084 1.1 christos && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
7085 1.1 christos return FALSE;
7086 1.1 christos }
7087 1.1 christos
7088 1.1 christos if (relocs)
7089 1.1 christos {
7090 1.1 christos if (!add_dynamic_entry (DT_RELA, 0)
7091 1.1 christos || !add_dynamic_entry (DT_RELASZ, 0)
7092 1.1 christos || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
7093 1.1 christos return FALSE;
7094 1.1 christos }
7095 1.1 christos
7096 1.1 christos /* If any dynamic relocs apply to a read-only section, then we
7097 1.1 christos need a DT_TEXTREL entry. */
7098 1.1 christos if ((info->flags & DF_TEXTREL) == 0)
7099 1.1 christos elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
7100 1.1 christos info);
7101 1.1 christos
7102 1.1 christos if ((info->flags & DF_TEXTREL) != 0)
7103 1.1 christos {
7104 1.1 christos if (!add_dynamic_entry (DT_TEXTREL, 0))
7105 1.1 christos return FALSE;
7106 1.1 christos }
7107 1.1 christos if (htab->is_vxworks
7108 1.1 christos && !elf_vxworks_add_dynamic_entries (output_bfd, info))
7109 1.1 christos return FALSE;
7110 1.1 christos }
7111 1.1 christos #undef add_dynamic_entry
7112 1.1 christos
7113 1.1 christos if (htab->glink_eh_frame != NULL
7114 1.1 christos && htab->glink_eh_frame->contents != NULL)
7115 1.1 christos {
7116 1.1 christos unsigned char *p = htab->glink_eh_frame->contents;
7117 1.1 christos bfd_vma val;
7118 1.1 christos
7119 1.1 christos memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
7120 1.1 christos /* CIE length (rewrite in case little-endian). */
7121 1.1 christos bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
7122 1.1 christos p += sizeof (glink_eh_frame_cie);
7123 1.1 christos /* FDE length. */
7124 1.1 christos val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
7125 1.1 christos bfd_put_32 (htab->elf.dynobj, val, p);
7126 1.3 christos p += 4;
7127 1.1 christos /* CIE pointer. */
7128 1.1 christos val = p - htab->glink_eh_frame->contents;
7129 1.1 christos bfd_put_32 (htab->elf.dynobj, val, p);
7130 1.1 christos p += 4;
7131 1.1 christos /* Offset to .glink. Set later. */
7132 1.1 christos p += 4;
7133 1.1 christos /* .glink size. */
7134 1.1 christos bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
7135 1.1 christos p += 4;
7136 1.1 christos /* Augmentation. */
7137 1.1 christos p += 1;
7138 1.1 christos
7139 1.1 christos if (bfd_link_pic (info)
7140 1.1 christos && htab->elf.dynamic_sections_created)
7141 1.1 christos {
7142 1.1 christos bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
7143 1.1 christos if (adv < 64)
7144 1.1 christos *p++ = DW_CFA_advance_loc + adv;
7145 1.1 christos else if (adv < 256)
7146 1.1 christos {
7147 1.1 christos *p++ = DW_CFA_advance_loc1;
7148 1.1 christos *p++ = adv;
7149 1.1 christos }
7150 1.1 christos else if (adv < 65536)
7151 1.1 christos {
7152 1.1 christos *p++ = DW_CFA_advance_loc2;
7153 1.1 christos bfd_put_16 (htab->elf.dynobj, adv, p);
7154 1.1 christos p += 2;
7155 1.1 christos }
7156 1.1 christos else
7157 1.1 christos {
7158 1.1 christos *p++ = DW_CFA_advance_loc4;
7159 1.1 christos bfd_put_32 (htab->elf.dynobj, adv, p);
7160 1.1 christos p += 4;
7161 1.1 christos }
7162 1.1 christos *p++ = DW_CFA_register;
7163 1.3 christos *p++ = 65;
7164 1.3 christos p++;
7165 1.3 christos *p++ = DW_CFA_advance_loc + 4;
7166 1.3 christos *p++ = DW_CFA_restore_extended;
7167 1.3 christos *p++ = 65;
7168 1.3 christos }
7169 1.3 christos BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
7170 1.3 christos == htab->glink_eh_frame->size);
7171 1.3 christos }
7172 1.3 christos
7173 1.3 christos return TRUE;
7174 1.3 christos }
7175 1.3 christos
7176 1.3 christos /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
7177 1.3 christos if it looks like nothing is using them. */
7178 1.3 christos
7179 1.3 christos static void
7180 1.3 christos maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
7181 1.3 christos {
7182 1.3 christos struct elf_link_hash_entry *sda = lsect->sym;
7183 1.3 christos
7184 1.3 christos if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
7185 1.3 christos {
7186 1.3 christos asection *s;
7187 1.3 christos
7188 1.3 christos s = bfd_get_section_by_name (output_bfd, lsect->name);
7189 1.3 christos if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
7190 1.3 christos {
7191 1.3 christos s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
7192 1.3 christos if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
7193 1.3 christos {
7194 1.3 christos sda->def_regular = 0;
7195 1.3 christos /* This is somewhat magic. See elf_link_output_extsym. */
7196 1.3 christos sda->ref_dynamic = 1;
7197 1.3 christos sda->forced_local = 0;
7198 1.3 christos }
7199 1.3 christos }
7200 1.3 christos }
7201 1.3 christos }
7202 1.3 christos
7203 1.1 christos void
7204 1.1 christos ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
7205 1.1 christos {
7206 1.1 christos struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7207 1.1 christos
7208 1.1 christos if (htab != NULL)
7209 1.1 christos {
7210 1.1 christos maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
7211 1.1 christos maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
7212 1.1 christos }
7213 1.1 christos }
7214 1.1 christos
7215 1.1 christos
7216 1.1 christos /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
7217 1.1 christos
7218 1.1 christos static bfd_boolean
7219 1.1 christos ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
7220 1.1 christos {
7221 1.1 christos if (h->plt.plist != NULL
7222 1.1 christos && !h->def_regular
7223 1.1 christos && (!h->pointer_equality_needed
7224 1.1 christos || !h->ref_regular_nonweak))
7225 1.1 christos return FALSE;
7226 1.1 christos
7227 1.3 christos return _bfd_elf_hash_symbol (h);
7228 1.1 christos }
7229 1.1 christos
7230 1.1 christos #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
7232 1.1 christos
7233 1.1 christos /* Relaxation trampolines. r12 is available for clobbering (r11, is
7234 1.1 christos used for some functions that are allowed to break the ABI). */
7235 1.1 christos static const int shared_stub_entry[] =
7236 1.1 christos {
7237 1.1 christos 0x7c0802a6, /* mflr 0 */
7238 1.1 christos 0x429f0005, /* bcl 20, 31, .Lxxx */
7239 1.1 christos 0x7d8802a6, /* mflr 12 */
7240 1.1 christos 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
7241 1.3 christos 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
7242 1.3 christos 0x7c0803a6, /* mtlr 0 */
7243 1.3 christos 0x7d8903a6, /* mtctr 12 */
7244 1.3 christos 0x4e800420, /* bctr */
7245 1.3 christos };
7246 1.3 christos
7247 1.3 christos static const int stub_entry[] =
7248 1.3 christos {
7249 1.3 christos 0x3d800000, /* lis 12,xxx@ha */
7250 1.3 christos 0x398c0000, /* addi 12,12,xxx@l */
7251 1.3 christos 0x7d8903a6, /* mtctr 12 */
7252 1.1 christos 0x4e800420, /* bctr */
7253 1.1 christos };
7254 1.1 christos
7255 1.1 christos struct ppc_elf_relax_info
7256 1.1 christos {
7257 1.1 christos unsigned int workaround_size;
7258 1.3 christos unsigned int picfixup_size;
7259 1.1 christos };
7260 1.3 christos
7261 1.1 christos /* This function implements long branch trampolines, and the ppc476
7262 1.1 christos icache bug workaround. Any section needing trampolines or patch
7263 1.1 christos space for the workaround has its size extended so that we can
7264 1.1 christos add trampolines at the end of the section. */
7265 1.1 christos
7266 1.1 christos static bfd_boolean
7267 1.1 christos ppc_elf_relax_section (bfd *abfd,
7268 1.1 christos asection *isec,
7269 1.1 christos struct bfd_link_info *link_info,
7270 1.1 christos bfd_boolean *again)
7271 1.1 christos {
7272 1.3 christos struct one_branch_fixup
7273 1.3 christos {
7274 1.3 christos struct one_branch_fixup *next;
7275 1.1 christos asection *tsec;
7276 1.3 christos /* Final link, can use the symbol offset. For a
7277 1.1 christos relocatable link we use the symbol's index. */
7278 1.3 christos bfd_vma toff;
7279 1.1 christos bfd_vma trampoff;
7280 1.1 christos };
7281 1.1 christos
7282 1.1 christos Elf_Internal_Shdr *symtab_hdr;
7283 1.1 christos bfd_byte *contents = NULL;
7284 1.3 christos Elf_Internal_Sym *isymbuf = NULL;
7285 1.1 christos Elf_Internal_Rela *internal_relocs = NULL;
7286 1.1 christos Elf_Internal_Rela *irel, *irelend = NULL;
7287 1.3 christos struct one_branch_fixup *branch_fixups = NULL;
7288 1.3 christos struct ppc_elf_relax_info *relax_info = NULL;
7289 1.1 christos unsigned changes = 0;
7290 1.1 christos bfd_boolean workaround_change;
7291 1.1 christos struct ppc_elf_link_hash_table *htab;
7292 1.1 christos bfd_size_type trampbase, trampoff, newsize, picfixup_size;
7293 1.1 christos asection *got2;
7294 1.3 christos bfd_boolean maybe_pasted;
7295 1.3 christos
7296 1.3 christos *again = FALSE;
7297 1.3 christos
7298 1.3 christos /* No need to do anything with non-alloc or non-code sections. */
7299 1.3 christos if ((isec->flags & SEC_ALLOC) == 0
7300 1.3 christos || (isec->flags & SEC_CODE) == 0
7301 1.3 christos || (isec->flags & SEC_LINKER_CREATED) != 0
7302 1.3 christos || isec->size < 4)
7303 1.3 christos return TRUE;
7304 1.3 christos
7305 1.3 christos /* We cannot represent the required PIC relocs in the output, so don't
7306 1.3 christos do anything. The linker doesn't support mixing -shared and -r
7307 1.3 christos anyway. */
7308 1.3 christos if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
7309 1.3 christos return TRUE;
7310 1.3 christos
7311 1.3 christos htab = ppc_elf_hash_table (link_info);
7312 1.3 christos if (htab == NULL)
7313 1.3 christos return TRUE;
7314 1.3 christos
7315 1.3 christos isec->size = (isec->size + 3) & -4;
7316 1.3 christos if (isec->rawsize == 0)
7317 1.3 christos isec->rawsize = isec->size;
7318 1.3 christos trampbase = isec->size;
7319 1.3 christos
7320 1.3 christos BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
7321 1.3 christos || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
7322 1.3 christos isec->sec_info_type = SEC_INFO_TYPE_TARGET;
7323 1.1 christos
7324 1.1 christos if (htab->params->ppc476_workaround
7325 1.1 christos || htab->params->pic_fixup > 0)
7326 1.1 christos {
7327 1.3 christos if (elf_section_data (isec)->sec_info == NULL)
7328 1.3 christos {
7329 1.1 christos elf_section_data (isec)->sec_info
7330 1.1 christos = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
7331 1.1 christos if (elf_section_data (isec)->sec_info == NULL)
7332 1.3 christos return FALSE;
7333 1.3 christos }
7334 1.3 christos relax_info = elf_section_data (isec)->sec_info;
7335 1.3 christos trampbase -= relax_info->workaround_size;
7336 1.3 christos }
7337 1.3 christos
7338 1.3 christos maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
7339 1.3 christos || strcmp (isec->output_section->name, ".fini") == 0);
7340 1.3 christos /* Space for a branch around any trampolines. */
7341 1.3 christos trampoff = trampbase;
7342 1.3 christos if (maybe_pasted && trampbase == isec->rawsize)
7343 1.3 christos trampoff += 4;
7344 1.1 christos
7345 1.3 christos symtab_hdr = &elf_symtab_hdr (abfd);
7346 1.1 christos picfixup_size = 0;
7347 1.3 christos if (htab->params->branch_trampolines
7348 1.3 christos || htab->params->pic_fixup > 0)
7349 1.1 christos {
7350 1.3 christos /* Get a copy of the native relocations. */
7351 1.3 christos if (isec->reloc_count != 0)
7352 1.3 christos {
7353 1.3 christos internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
7354 1.3 christos link_info->keep_memory);
7355 1.3 christos if (internal_relocs == NULL)
7356 1.3 christos goto error_return;
7357 1.3 christos }
7358 1.3 christos
7359 1.7 christos got2 = bfd_get_section_by_name (abfd, ".got2");
7360 1.3 christos
7361 1.3 christos irelend = internal_relocs + isec->reloc_count;
7362 1.3 christos for (irel = internal_relocs; irel < irelend; irel++)
7363 1.3 christos {
7364 1.3 christos unsigned long r_type = ELF32_R_TYPE (irel->r_info);
7365 1.3 christos bfd_vma toff, roff;
7366 1.3 christos asection *tsec;
7367 1.3 christos struct one_branch_fixup *f;
7368 1.7 christos size_t insn_offset = 0;
7369 1.3 christos bfd_vma max_branch_offset = 0, val;
7370 1.3 christos bfd_byte *hit_addr;
7371 1.1 christos unsigned long t0;
7372 1.3 christos struct elf_link_hash_entry *h;
7373 1.3 christos Elf_Internal_Sym *isym;
7374 1.3 christos struct plt_entry **plist;
7375 1.3 christos unsigned char sym_type;
7376 1.3 christos
7377 1.1 christos switch (r_type)
7378 1.3 christos {
7379 1.3 christos case R_PPC_REL24:
7380 1.3 christos case R_PPC_LOCAL24PC:
7381 1.3 christos case R_PPC_PLTREL24:
7382 1.1 christos case R_PPC_PLTCALL:
7383 1.3 christos max_branch_offset = 1 << 25;
7384 1.3 christos break;
7385 1.3 christos
7386 1.1 christos case R_PPC_REL14:
7387 1.3 christos case R_PPC_REL14_BRTAKEN:
7388 1.7 christos case R_PPC_REL14_BRNTAKEN:
7389 1.7 christos max_branch_offset = 1 << 15;
7390 1.7 christos break;
7391 1.7 christos
7392 1.7 christos case R_PPC_ADDR16_HA:
7393 1.1 christos if (htab->params->pic_fixup > 0)
7394 1.7 christos break;
7395 1.7 christos continue;
7396 1.7 christos
7397 1.3 christos default:
7398 1.3 christos continue;
7399 1.3 christos }
7400 1.3 christos
7401 1.3 christos /* Get the value of the symbol referred to by the reloc. */
7402 1.3 christos if (!get_sym_h (&h, &isym, &tsec, NULL, &isymbuf,
7403 1.3 christos ELF32_R_SYM (irel->r_info), abfd))
7404 1.3 christos goto error_return;
7405 1.1 christos
7406 1.1 christos if (isym != NULL)
7407 1.3 christos {
7408 1.7 christos if (tsec != NULL)
7409 1.7 christos ;
7410 1.3 christos else if (isym->st_shndx == SHN_UNDEF)
7411 1.3 christos tsec = bfd_und_section_ptr;
7412 1.3 christos else if (isym->st_shndx == SHN_ABS)
7413 1.7 christos tsec = bfd_abs_section_ptr;
7414 1.7 christos else if (isym->st_shndx == SHN_COMMON)
7415 1.7 christos tsec = bfd_com_section_ptr;
7416 1.3 christos
7417 1.3 christos toff = isym->st_value;
7418 1.3 christos sym_type = ELF_ST_TYPE (isym->st_info);
7419 1.3 christos }
7420 1.3 christos else
7421 1.3 christos {
7422 1.3 christos if (tsec != NULL)
7423 1.3 christos toff = h->root.u.def.value;
7424 1.3 christos else if (h->root.type == bfd_link_hash_undefined
7425 1.3 christos || h->root.type == bfd_link_hash_undefweak)
7426 1.3 christos {
7427 1.3 christos unsigned long indx;
7428 1.3 christos
7429 1.3 christos indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
7430 1.3 christos tsec = bfd_und_section_ptr;
7431 1.3 christos toff = bfd_link_relocatable (link_info) ? indx : 0;
7432 1.3 christos }
7433 1.3 christos else
7434 1.3 christos continue;
7435 1.3 christos
7436 1.3 christos /* If this branch is to __tls_get_addr then we may later
7437 1.3 christos optimise away the call. We won't be needing a long-
7438 1.3 christos branch stub in that case. */
7439 1.3 christos if (bfd_link_executable (link_info)
7440 1.3 christos && h == htab->tls_get_addr
7441 1.3 christos && irel != internal_relocs)
7442 1.3 christos {
7443 1.3 christos unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
7444 1.3 christos unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
7445 1.3 christos unsigned int tls_mask = 0;
7446 1.3 christos
7447 1.3 christos /* The previous reloc should be one of R_PPC_TLSGD or
7448 1.3 christos R_PPC_TLSLD, or for older object files, a reloc
7449 1.3 christos on the __tls_get_addr arg setup insn. Get tls
7450 1.3 christos mask bits from the symbol on that reloc. */
7451 1.3 christos if (t_symndx < symtab_hdr->sh_info)
7452 1.3 christos {
7453 1.3 christos bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7454 1.3 christos
7455 1.3 christos if (local_got_offsets != NULL)
7456 1.3 christos {
7457 1.3 christos struct plt_entry **local_plt = (struct plt_entry **)
7458 1.1 christos (local_got_offsets + symtab_hdr->sh_info);
7459 1.3 christos char *lgot_masks = (char *)
7460 1.3 christos (local_plt + symtab_hdr->sh_info);
7461 1.3 christos tls_mask = lgot_masks[t_symndx];
7462 1.1 christos }
7463 1.3 christos }
7464 1.3 christos else
7465 1.3 christos {
7466 1.3 christos struct elf_link_hash_entry *th
7467 1.3 christos = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
7468 1.3 christos
7469 1.3 christos while (th->root.type == bfd_link_hash_indirect
7470 1.3 christos || th->root.type == bfd_link_hash_warning)
7471 1.3 christos th = (struct elf_link_hash_entry *) th->root.u.i.link;
7472 1.3 christos
7473 1.3 christos tls_mask
7474 1.3 christos = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
7475 1.3 christos }
7476 1.1 christos
7477 1.3 christos /* The mask bits tell us if the call will be
7478 1.3 christos optimised away. */
7479 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
7480 1.3 christos && (t_rtype == R_PPC_TLSGD
7481 1.1 christos || t_rtype == R_PPC_GOT_TLSGD16
7482 1.3 christos || t_rtype == R_PPC_GOT_TLSGD16_LO))
7483 1.3 christos continue;
7484 1.3 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
7485 1.3 christos && (t_rtype == R_PPC_TLSLD
7486 1.3 christos || t_rtype == R_PPC_GOT_TLSLD16
7487 1.3 christos || t_rtype == R_PPC_GOT_TLSLD16_LO))
7488 1.3 christos continue;
7489 1.1 christos }
7490 1.3 christos
7491 1.3 christos sym_type = h->type;
7492 1.3 christos }
7493 1.3 christos
7494 1.3 christos if (r_type == R_PPC_ADDR16_HA)
7495 1.3 christos {
7496 1.3 christos if (h != NULL
7497 1.1 christos && !h->def_regular
7498 1.3 christos && h->protected_def
7499 1.3 christos && ppc_elf_hash_entry (h)->has_addr16_ha
7500 1.3 christos && ppc_elf_hash_entry (h)->has_addr16_lo)
7501 1.3 christos picfixup_size += 12;
7502 1.3 christos continue;
7503 1.3 christos }
7504 1.3 christos
7505 1.3 christos /* The condition here under which we call find_plt_ent must
7506 1.3 christos match that in relocate_section. If we call find_plt_ent here
7507 1.3 christos but not in relocate_section, or vice versa, then the branch
7508 1.3 christos destination used here may be incorrect. */
7509 1.3 christos plist = NULL;
7510 1.1 christos if (h != NULL)
7511 1.3 christos {
7512 1.3 christos /* We know is_branch_reloc (r_type) is true. */
7513 1.3 christos if (h->type == STT_GNU_IFUNC
7514 1.3 christos || r_type == R_PPC_PLTREL24)
7515 1.1 christos plist = &h->plt.plist;
7516 1.3 christos }
7517 1.3 christos else if (sym_type == STT_GNU_IFUNC
7518 1.3 christos && elf_local_got_offsets (abfd) != NULL)
7519 1.3 christos {
7520 1.1 christos bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7521 1.3 christos struct plt_entry **local_plt = (struct plt_entry **)
7522 1.3 christos (local_got_offsets + symtab_hdr->sh_info);
7523 1.3 christos plist = local_plt + ELF32_R_SYM (irel->r_info);
7524 1.3 christos }
7525 1.3 christos if (plist != NULL)
7526 1.3 christos {
7527 1.3 christos bfd_vma addend = 0;
7528 1.3 christos struct plt_entry *ent;
7529 1.3 christos
7530 1.3 christos if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
7531 1.7 christos addend = irel->r_addend;
7532 1.3 christos ent = find_plt_ent (plist, got2, addend);
7533 1.3 christos if (ent != NULL)
7534 1.1 christos {
7535 1.1 christos if (htab->plt_type == PLT_NEW
7536 1.1 christos || h == NULL
7537 1.3 christos || !htab->elf.dynamic_sections_created
7538 1.3 christos || h->dynindx == -1)
7539 1.3 christos {
7540 1.3 christos tsec = htab->glink;
7541 1.3 christos toff = ent->glink_offset;
7542 1.3 christos }
7543 1.3 christos else
7544 1.3 christos {
7545 1.3 christos tsec = htab->elf.splt;
7546 1.3 christos toff = ent->plt.offset;
7547 1.3 christos }
7548 1.3 christos }
7549 1.3 christos }
7550 1.3 christos
7551 1.3 christos /* If the branch and target are in the same section, you have
7552 1.3 christos no hope of adding stubs. We'll error out later should the
7553 1.3 christos branch overflow. */
7554 1.3 christos if (tsec == isec)
7555 1.3 christos continue;
7556 1.3 christos
7557 1.3 christos /* There probably isn't any reason to handle symbols in
7558 1.3 christos SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7559 1.3 christos attribute for a code section, and we are only looking at
7560 1.3 christos branches. However, implement it correctly here as a
7561 1.3 christos reference for other target relax_section functions. */
7562 1.3 christos if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7563 1.3 christos {
7564 1.3 christos /* At this stage in linking, no SEC_MERGE symbol has been
7565 1.3 christos adjusted, so all references to such symbols need to be
7566 1.3 christos passed through _bfd_merged_section_offset. (Later, in
7567 1.3 christos relocate_section, all SEC_MERGE symbols *except* for
7568 1.3 christos section symbols have been adjusted.)
7569 1.3 christos
7570 1.3 christos gas may reduce relocations against symbols in SEC_MERGE
7571 1.3 christos sections to a relocation against the section symbol when
7572 1.3 christos the original addend was zero. When the reloc is against
7573 1.1 christos a section symbol we should include the addend in the
7574 1.3 christos offset passed to _bfd_merged_section_offset, since the
7575 1.3 christos location of interest is the original symbol. On the
7576 1.3 christos other hand, an access to "sym+addend" where "sym" is not
7577 1.3 christos a section symbol should not include the addend; Such an
7578 1.3 christos access is presumed to be an offset from "sym"; The
7579 1.1 christos location of interest is just "sym". */
7580 1.1 christos if (sym_type == STT_SECTION)
7581 1.3 christos toff += irel->r_addend;
7582 1.3 christos
7583 1.3 christos toff
7584 1.3 christos = _bfd_merged_section_offset (abfd, &tsec,
7585 1.3 christos elf_section_data (tsec)->sec_info,
7586 1.3 christos toff);
7587 1.3 christos
7588 1.1 christos if (sym_type != STT_SECTION)
7589 1.3 christos toff += irel->r_addend;
7590 1.1 christos }
7591 1.3 christos /* PLTREL24 addends are special. */
7592 1.3 christos else if (r_type != R_PPC_PLTREL24)
7593 1.3 christos toff += irel->r_addend;
7594 1.3 christos
7595 1.3 christos /* Attempted -shared link of non-pic code loses. */
7596 1.3 christos if ((!bfd_link_relocatable (link_info)
7597 1.3 christos && tsec == bfd_und_section_ptr)
7598 1.3 christos || tsec->output_section == NULL
7599 1.3 christos || (tsec->owner != NULL
7600 1.3 christos && (tsec->owner->flags & BFD_PLUGIN) != 0))
7601 1.3 christos continue;
7602 1.3 christos
7603 1.3 christos roff = irel->r_offset;
7604 1.3 christos
7605 1.3 christos /* If the branch is in range, no need to do anything. */
7606 1.1 christos if (tsec != bfd_und_section_ptr
7607 1.3 christos && (!bfd_link_relocatable (link_info)
7608 1.3 christos /* A relocatable link may have sections moved during
7609 1.3 christos final link, so do not presume they remain in range. */
7610 1.3 christos || tsec->output_section == isec->output_section))
7611 1.1 christos {
7612 1.3 christos bfd_vma symaddr, reladdr;
7613 1.3 christos
7614 1.3 christos symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7615 1.3 christos reladdr = isec->output_section->vma + isec->output_offset + roff;
7616 1.1 christos if (symaddr - reladdr + max_branch_offset
7617 1.3 christos < 2 * max_branch_offset)
7618 1.3 christos continue;
7619 1.3 christos }
7620 1.3 christos
7621 1.3 christos /* Look for an existing fixup to this address. */
7622 1.1 christos for (f = branch_fixups; f ; f = f->next)
7623 1.3 christos if (f->tsec == tsec && f->toff == toff)
7624 1.3 christos break;
7625 1.3 christos
7626 1.3 christos if (f == NULL)
7627 1.3 christos {
7628 1.3 christos size_t size;
7629 1.3 christos unsigned long stub_rtype;
7630 1.3 christos
7631 1.3 christos val = trampoff - roff;
7632 1.3 christos if (val >= max_branch_offset)
7633 1.3 christos /* Oh dear, we can't reach a trampoline. Don't try to add
7634 1.7 christos one. We'll report an error later. */
7635 1.3 christos continue;
7636 1.3 christos
7637 1.3 christos if (bfd_link_pic (link_info))
7638 1.3 christos {
7639 1.3 christos size = 4 * ARRAY_SIZE (shared_stub_entry);
7640 1.3 christos insn_offset = 12;
7641 1.1 christos }
7642 1.3 christos else
7643 1.3 christos {
7644 1.3 christos size = 4 * ARRAY_SIZE (stub_entry);
7645 1.3 christos insn_offset = 0;
7646 1.3 christos }
7647 1.3 christos stub_rtype = R_PPC_RELAX;
7648 1.3 christos if (tsec == htab->elf.splt
7649 1.3 christos || tsec == htab->glink)
7650 1.3 christos {
7651 1.3 christos stub_rtype = R_PPC_RELAX_PLT;
7652 1.3 christos if (r_type == R_PPC_PLTREL24)
7653 1.3 christos stub_rtype = R_PPC_RELAX_PLTREL24;
7654 1.3 christos }
7655 1.3 christos
7656 1.3 christos /* Hijack the old relocation. Since we need two
7657 1.3 christos relocations for this use a "composite" reloc. */
7658 1.1 christos irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7659 1.3 christos stub_rtype);
7660 1.3 christos irel->r_offset = trampoff + insn_offset;
7661 1.1 christos if (r_type == R_PPC_PLTREL24
7662 1.1 christos && stub_rtype != R_PPC_RELAX_PLTREL24)
7663 1.1 christos irel->r_addend = 0;
7664 1.3 christos
7665 1.3 christos /* Record the fixup so we don't do it again this section. */
7666 1.3 christos f = bfd_malloc (sizeof (*f));
7667 1.3 christos f->next = branch_fixups;
7668 1.3 christos f->tsec = tsec;
7669 1.3 christos f->toff = toff;
7670 1.1 christos f->trampoff = trampoff;
7671 1.1 christos branch_fixups = f;
7672 1.3 christos
7673 1.3 christos trampoff += size;
7674 1.1 christos changes++;
7675 1.3 christos }
7676 1.3 christos else
7677 1.3 christos {
7678 1.1 christos val = f->trampoff - roff;
7679 1.3 christos if (val >= max_branch_offset)
7680 1.1 christos continue;
7681 1.1 christos
7682 1.1 christos /* Nop out the reloc, since we're finalizing things here. */
7683 1.3 christos irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7684 1.3 christos }
7685 1.3 christos
7686 1.3 christos /* Get the section contents. */
7687 1.3 christos if (contents == NULL)
7688 1.3 christos {
7689 1.3 christos /* Get cached copy if it exists. */
7690 1.3 christos if (elf_section_data (isec)->this_hdr.contents != NULL)
7691 1.3 christos contents = elf_section_data (isec)->this_hdr.contents;
7692 1.3 christos /* Go get them off disk. */
7693 1.3 christos else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7694 1.3 christos goto error_return;
7695 1.1 christos }
7696 1.3 christos
7697 1.3 christos /* Fix up the existing branch to hit the trampoline. */
7698 1.3 christos hit_addr = contents + roff;
7699 1.3 christos switch (r_type)
7700 1.3 christos {
7701 1.3 christos case R_PPC_REL24:
7702 1.3 christos case R_PPC_LOCAL24PC:
7703 1.3 christos case R_PPC_PLTREL24:
7704 1.3 christos t0 = bfd_get_32 (abfd, hit_addr);
7705 1.1 christos t0 &= ~0x3fffffc;
7706 1.1 christos t0 |= val & 0x3fffffc;
7707 1.3 christos bfd_put_32 (abfd, t0, hit_addr);
7708 1.1 christos break;
7709 1.3 christos
7710 1.3 christos case R_PPC_REL14:
7711 1.1 christos case R_PPC_REL14_BRTAKEN:
7712 1.1 christos case R_PPC_REL14_BRNTAKEN:
7713 1.3 christos t0 = bfd_get_32 (abfd, hit_addr);
7714 1.1 christos t0 &= ~0xfffc;
7715 1.3 christos t0 |= val & 0xfffc;
7716 1.3 christos bfd_put_32 (abfd, t0, hit_addr);
7717 1.3 christos break;
7718 1.3 christos }
7719 1.3 christos }
7720 1.3 christos
7721 1.3 christos while (branch_fixups != NULL)
7722 1.3 christos {
7723 1.3 christos struct one_branch_fixup *f = branch_fixups;
7724 1.1 christos branch_fixups = branch_fixups->next;
7725 1.3 christos free (f);
7726 1.3 christos }
7727 1.3 christos }
7728 1.3 christos
7729 1.3 christos workaround_change = FALSE;
7730 1.1 christos newsize = trampoff;
7731 1.3 christos if (htab->params->ppc476_workaround
7732 1.3 christos && (!bfd_link_relocatable (link_info)
7733 1.3 christos || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7734 1.3 christos {
7735 1.3 christos bfd_vma addr, end_addr;
7736 1.3 christos unsigned int crossings;
7737 1.3 christos bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7738 1.3 christos
7739 1.3 christos addr = isec->output_section->vma + isec->output_offset;
7740 1.3 christos end_addr = addr + trampoff;
7741 1.3 christos addr &= -pagesize;
7742 1.3 christos crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7743 1.1 christos if (crossings != 0)
7744 1.3 christos {
7745 1.3 christos /* Keep space aligned, to ensure the patch code itself does
7746 1.1 christos not cross a page. Don't decrease size calculated on a
7747 1.3 christos previous pass as otherwise we might never settle on a layout. */
7748 1.3 christos newsize = 15 - ((end_addr - 1) & 15);
7749 1.3 christos newsize += crossings * 16;
7750 1.3 christos if (relax_info->workaround_size < newsize)
7751 1.3 christos {
7752 1.3 christos relax_info->workaround_size = newsize;
7753 1.3 christos workaround_change = TRUE;
7754 1.1 christos }
7755 1.3 christos /* Ensure relocate_section is called. */
7756 1.3 christos isec->flags |= SEC_RELOC;
7757 1.1 christos }
7758 1.1 christos newsize = trampoff + relax_info->workaround_size;
7759 1.1 christos }
7760 1.1 christos
7761 1.1 christos if (htab->params->pic_fixup > 0)
7762 1.1 christos {
7763 1.1 christos picfixup_size -= relax_info->picfixup_size;
7764 1.1 christos if (picfixup_size != 0)
7765 1.1 christos relax_info->picfixup_size += picfixup_size;
7766 1.1 christos newsize += relax_info->picfixup_size;
7767 1.1 christos }
7768 1.1 christos
7769 1.1 christos if (changes != 0 || picfixup_size != 0 || workaround_change)
7770 1.1 christos isec->size = newsize;
7771 1.1 christos
7772 1.1 christos if (isymbuf != NULL
7773 1.1 christos && symtab_hdr->contents != (unsigned char *) isymbuf)
7774 1.1 christos {
7775 1.1 christos if (! link_info->keep_memory)
7776 1.1 christos free (isymbuf);
7777 1.1 christos else
7778 1.1 christos {
7779 1.1 christos /* Cache the symbols for elf_link_input_bfd. */
7780 1.1 christos symtab_hdr->contents = (unsigned char *) isymbuf;
7781 1.1 christos }
7782 1.3 christos }
7783 1.1 christos
7784 1.1 christos if (contents != NULL
7785 1.1 christos && elf_section_data (isec)->this_hdr.contents != contents)
7786 1.1 christos {
7787 1.1 christos if (!changes && !link_info->keep_memory)
7788 1.1 christos free (contents);
7789 1.1 christos else
7790 1.1 christos {
7791 1.1 christos /* Cache the section contents for elf_link_input_bfd. */
7792 1.1 christos elf_section_data (isec)->this_hdr.contents = contents;
7793 1.1 christos }
7794 1.1 christos }
7795 1.1 christos
7796 1.1 christos changes += picfixup_size;
7797 1.1 christos if (changes != 0)
7798 1.1 christos {
7799 1.1 christos /* Append sufficient NOP relocs so we can write out relocation
7800 1.1 christos information for the trampolines. */
7801 1.1 christos Elf_Internal_Shdr *rel_hdr;
7802 1.1 christos Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7803 1.1 christos * sizeof (*new_relocs));
7804 1.1 christos unsigned ix;
7805 1.1 christos
7806 1.1 christos if (!new_relocs)
7807 1.1 christos goto error_return;
7808 1.1 christos memcpy (new_relocs, internal_relocs,
7809 1.3 christos isec->reloc_count * sizeof (*new_relocs));
7810 1.3 christos for (ix = changes; ix--;)
7811 1.1 christos {
7812 1.1 christos irel = new_relocs + ix + isec->reloc_count;
7813 1.3 christos
7814 1.1 christos irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7815 1.1 christos }
7816 1.1 christos if (internal_relocs != elf_section_data (isec)->relocs)
7817 1.3 christos free (internal_relocs);
7818 1.3 christos elf_section_data (isec)->relocs = new_relocs;
7819 1.3 christos isec->reloc_count += changes;
7820 1.3 christos rel_hdr = _bfd_elf_single_rel_hdr (isec);
7821 1.3 christos rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7822 1.3 christos }
7823 1.1 christos else if (internal_relocs != NULL
7824 1.1 christos && elf_section_data (isec)->relocs != internal_relocs)
7825 1.1 christos free (internal_relocs);
7826 1.1 christos
7827 1.1 christos *again = changes != 0 || workaround_change;
7828 1.1 christos return TRUE;
7829 1.1 christos
7830 1.1 christos error_return:
7831 1.1 christos while (branch_fixups != NULL)
7832 1.1 christos {
7833 1.1 christos struct one_branch_fixup *f = branch_fixups;
7834 1.1 christos branch_fixups = branch_fixups->next;
7835 1.1 christos free (f);
7836 1.1 christos }
7837 1.1 christos if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7838 1.1 christos free (isymbuf);
7839 1.1 christos if (contents != NULL
7840 1.1 christos && elf_section_data (isec)->this_hdr.contents != contents)
7841 1.1 christos free (contents);
7842 1.1 christos if (internal_relocs != NULL
7843 1.1 christos && elf_section_data (isec)->relocs != internal_relocs)
7844 1.1 christos free (internal_relocs);
7845 1.1 christos return FALSE;
7846 1.1 christos }
7847 1.1 christos
7848 1.1 christos /* What to do when ld finds relocations against symbols defined in
7850 1.1 christos discarded sections. */
7851 1.1 christos
7852 1.1 christos static unsigned int
7853 1.1 christos ppc_elf_action_discarded (asection *sec)
7854 1.1 christos {
7855 1.1 christos if (strcmp (".fixup", sec->name) == 0)
7856 1.1 christos return 0;
7857 1.1 christos
7858 1.1 christos if (strcmp (".got2", sec->name) == 0)
7859 1.1 christos return 0;
7860 1.1 christos
7861 1.1 christos return _bfd_elf_default_action_discarded (sec);
7862 1.1 christos }
7863 1.1 christos
7864 1.1 christos /* Fill in the address for a pointer generated in a linker section. */
7866 1.1 christos
7867 1.1 christos static bfd_vma
7868 1.1 christos elf_finish_pointer_linker_section (bfd *input_bfd,
7869 1.1 christos elf_linker_section_t *lsect,
7870 1.1 christos struct elf_link_hash_entry *h,
7871 1.1 christos bfd_vma relocation,
7872 1.1 christos const Elf_Internal_Rela *rel)
7873 1.1 christos {
7874 1.1 christos elf_linker_section_pointers_t *linker_section_ptr;
7875 1.1 christos
7876 1.1 christos BFD_ASSERT (lsect != NULL);
7877 1.1 christos
7878 1.1 christos if (h != NULL)
7879 1.1 christos {
7880 1.1 christos /* Handle global symbol. */
7881 1.1 christos struct ppc_elf_link_hash_entry *eh;
7882 1.1 christos
7883 1.1 christos eh = (struct ppc_elf_link_hash_entry *) h;
7884 1.1 christos BFD_ASSERT (eh->elf.def_regular);
7885 1.1 christos linker_section_ptr = eh->linker_section_pointer;
7886 1.1 christos }
7887 1.1 christos else
7888 1.1 christos {
7889 1.1 christos /* Handle local symbol. */
7890 1.1 christos unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7891 1.1 christos
7892 1.1 christos BFD_ASSERT (is_ppc_elf (input_bfd));
7893 1.1 christos BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7894 1.1 christos linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7895 1.1 christos }
7896 1.1 christos
7897 1.1 christos linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7898 1.1 christos rel->r_addend,
7899 1.1 christos lsect);
7900 1.1 christos BFD_ASSERT (linker_section_ptr != NULL);
7901 1.1 christos
7902 1.1 christos /* Offset will always be a multiple of four, so use the bottom bit
7903 1.1 christos as a "written" flag. */
7904 1.1 christos if ((linker_section_ptr->offset & 1) == 0)
7905 1.1 christos {
7906 1.1 christos bfd_put_32 (lsect->section->owner,
7907 1.1 christos relocation + linker_section_ptr->addend,
7908 1.1 christos lsect->section->contents + linker_section_ptr->offset);
7909 1.1 christos linker_section_ptr->offset += 1;
7910 1.1 christos }
7911 1.1 christos
7912 1.1 christos relocation = (lsect->section->output_section->vma
7913 1.1 christos + lsect->section->output_offset
7914 1.1 christos + linker_section_ptr->offset - 1
7915 1.7 christos - SYM_VAL (lsect->sym));
7916 1.7 christos
7917 1.1 christos #ifdef DEBUG
7918 1.1 christos fprintf (stderr,
7919 1.1 christos "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7920 1.1 christos lsect->name, (long) relocation, (long) relocation);
7921 1.1 christos #endif
7922 1.7 christos
7923 1.7 christos return relocation;
7924 1.7 christos }
7925 1.7 christos
7926 1.7 christos #define PPC_LO(v) ((v) & 0xffff)
7927 1.7 christos #define PPC_HI(v) (((v) >> 16) & 0xffff)
7928 1.7 christos #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7929 1.7 christos
7930 1.7 christos static void
7931 1.7 christos write_glink_stub (struct elf_link_hash_entry *h, struct plt_entry *ent,
7932 1.7 christos asection *plt_sec, unsigned char *p,
7933 1.7 christos struct bfd_link_info *info)
7934 1.7 christos {
7935 1.7 christos struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7936 1.7 christos bfd *output_bfd = info->output_bfd;
7937 1.7 christos bfd_vma plt;
7938 1.7 christos unsigned char *end = p + GLINK_ENTRY_SIZE (htab, h);
7939 1.7 christos
7940 1.7 christos if (h != NULL
7941 1.7 christos && h == htab->tls_get_addr
7942 1.7 christos && !htab->params->no_tls_get_addr_opt)
7943 1.7 christos {
7944 1.7 christos bfd_put_32 (output_bfd, LWZ_11_3, p);
7945 1.1 christos p += 4;
7946 1.1 christos bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
7947 1.1 christos p += 4;
7948 1.1 christos bfd_put_32 (output_bfd, MR_0_3, p);
7949 1.1 christos p += 4;
7950 1.3 christos bfd_put_32 (output_bfd, CMPWI_11_0, p);
7951 1.1 christos p += 4;
7952 1.1 christos bfd_put_32 (output_bfd, ADD_3_12_2, p);
7953 1.1 christos p += 4;
7954 1.1 christos bfd_put_32 (output_bfd, BEQLR, p);
7955 1.1 christos p += 4;
7956 1.1 christos bfd_put_32 (output_bfd, MR_3_0, p);
7957 1.1 christos p += 4;
7958 1.1 christos bfd_put_32 (output_bfd, NOP, p);
7959 1.1 christos p += 4;
7960 1.1 christos }
7961 1.1 christos
7962 1.1 christos plt = ((ent->plt.offset & ~1)
7963 1.1 christos + plt_sec->output_section->vma
7964 1.7 christos + plt_sec->output_offset);
7965 1.1 christos
7966 1.1 christos if (bfd_link_pic (info))
7967 1.1 christos {
7968 1.1 christos bfd_vma got = 0;
7969 1.1 christos
7970 1.1 christos if (ent->addend >= 32768)
7971 1.1 christos got = (ent->addend
7972 1.1 christos + ent->sec->output_section->vma
7973 1.1 christos + ent->sec->output_offset);
7974 1.1 christos else if (htab->elf.hgot != NULL)
7975 1.1 christos got = SYM_VAL (htab->elf.hgot);
7976 1.1 christos
7977 1.7 christos plt -= got;
7978 1.7 christos
7979 1.7 christos if (plt + 0x8000 < 0x10000)
7980 1.7 christos bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7981 1.7 christos else
7982 1.7 christos {
7983 1.7 christos bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7984 1.7 christos p += 4;
7985 1.7 christos bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7986 1.1 christos }
7987 1.1 christos }
7988 1.1 christos else
7989 1.1 christos {
7990 1.1 christos bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7991 1.1 christos p += 4;
7992 1.1 christos bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7993 1.1 christos }
7994 1.1 christos p += 4;
7995 1.1 christos bfd_put_32 (output_bfd, MTCTR_11, p);
7996 1.1 christos p += 4;
7997 1.1 christos bfd_put_32 (output_bfd, BCTR, p);
7998 1.1 christos p += 4;
7999 1.1 christos while (p < end)
8000 1.1 christos {
8001 1.1 christos bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
8002 1.1 christos p += 4;
8003 1.1 christos }
8004 1.1 christos }
8005 1.1 christos
8006 1.1 christos /* Return true if symbol is defined statically. */
8007 1.1 christos
8008 1.1 christos static bfd_boolean
8009 1.1 christos is_static_defined (struct elf_link_hash_entry *h)
8010 1.1 christos {
8011 1.1 christos return ((h->root.type == bfd_link_hash_defined
8012 1.1 christos || h->root.type == bfd_link_hash_defweak)
8013 1.1 christos && h->root.u.def.section != NULL
8014 1.1 christos && h->root.u.def.section->output_section != NULL);
8015 1.1 christos }
8016 1.1 christos
8017 1.1 christos /* If INSN is an opcode that may be used with an @tls operand, return
8018 1.1 christos the transformed insn for TLS optimisation, otherwise return 0. If
8019 1.1 christos REG is non-zero only match an insn with RB or RA equal to REG. */
8020 1.1 christos
8021 1.1 christos unsigned int
8022 1.1 christos _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
8023 1.1 christos {
8024 1.1 christos unsigned int rtra;
8025 1.1 christos
8026 1.1 christos if ((insn & (0x3f << 26)) != 31 << 26)
8027 1.1 christos return 0;
8028 1.1 christos
8029 1.1 christos if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
8030 1.1 christos rtra = insn & ((1 << 26) - (1 << 16));
8031 1.1 christos else if (((insn >> 16) & 0x1f) == reg)
8032 1.1 christos rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
8033 1.1 christos else
8034 1.1 christos return 0;
8035 1.1 christos
8036 1.1 christos if ((insn & (0x3ff << 1)) == 266 << 1)
8037 1.1 christos /* add -> addi. */
8038 1.1 christos insn = 14 << 26;
8039 1.1 christos else if ((insn & (0x1f << 1)) == 23 << 1
8040 1.1 christos && ((insn & (0x1f << 6)) < 14 << 6
8041 1.1 christos || ((insn & (0x1f << 6)) >= 16 << 6
8042 1.1 christos && (insn & (0x1f << 6)) < 24 << 6)))
8043 1.1 christos /* load and store indexed -> dform. */
8044 1.1 christos insn = (32 | ((insn >> 6) & 0x1f)) << 26;
8045 1.1 christos else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
8046 1.1 christos /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
8047 1.1 christos insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
8048 1.1 christos else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
8049 1.1 christos /* lwax -> lwa. */
8050 1.1 christos insn = (58 << 26) | 2;
8051 1.1 christos else
8052 1.1 christos return 0;
8053 1.1 christos insn |= rtra;
8054 1.1 christos return insn;
8055 1.1 christos }
8056 1.1 christos
8057 1.1 christos /* If INSN is an opcode that may be used with an @tprel operand, return
8058 1.1 christos the transformed insn for an undefined weak symbol, ie. with the
8059 1.1 christos thread pointer REG operand removed. Otherwise return 0. */
8060 1.1 christos
8061 1.1 christos unsigned int
8062 1.1 christos _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
8063 1.1 christos {
8064 1.1 christos if ((insn & (0x1f << 16)) == reg << 16
8065 1.1 christos && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8066 1.1 christos || (insn & (0x3f << 26)) == 15u << 26 /* addis */
8067 1.1 christos || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8068 1.1 christos || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8069 1.1 christos || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8070 1.1 christos || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8071 1.1 christos || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8072 1.1 christos || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8073 1.1 christos || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8074 1.1 christos || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8075 1.1 christos || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8076 1.1 christos || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8077 1.1 christos || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8078 1.1 christos || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8079 1.1 christos || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8080 1.1 christos || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8081 1.1 christos && (insn & 3) != 1)
8082 1.1 christos || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8083 1.1 christos && ((insn & 3) == 0 || (insn & 3) == 3))))
8084 1.1 christos {
8085 1.1 christos insn &= ~(0x1f << 16);
8086 1.1 christos }
8087 1.1 christos else if ((insn & (0x1f << 21)) == reg << 21
8088 1.1 christos && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
8089 1.1 christos || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
8090 1.1 christos || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
8091 1.1 christos {
8092 1.1 christos insn &= ~(0x1f << 21);
8093 1.1 christos insn |= (insn & (0x1f << 16)) << 5;
8094 1.1 christos if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
8095 1.1 christos insn -= 2 >> 26; /* convert to ori,oris */
8096 1.1 christos }
8097 1.1 christos else
8098 1.3 christos insn = 0;
8099 1.3 christos return insn;
8100 1.3 christos }
8101 1.1 christos
8102 1.1 christos static bfd_boolean
8103 1.1 christos is_insn_ds_form (unsigned int insn)
8104 1.1 christos {
8105 1.1 christos return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
8106 1.1 christos || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
8107 1.1 christos || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
8108 1.1 christos || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
8109 1.1 christos }
8110 1.1 christos
8111 1.1 christos static bfd_boolean
8112 1.1 christos is_insn_dq_form (unsigned int insn)
8113 1.1 christos {
8114 1.1 christos return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
8115 1.1 christos || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
8116 1.1 christos && (insn & 3) == 1));
8117 1.1 christos }
8118 1.1 christos
8119 1.1 christos /* The RELOCATE_SECTION function is called by the ELF backend linker
8120 1.1 christos to handle the relocations for a section.
8121 1.1 christos
8122 1.1 christos The relocs are always passed as Rela structures; if the section
8123 1.1 christos actually uses Rel structures, the r_addend field will always be
8124 1.1 christos zero.
8125 1.1 christos
8126 1.1 christos This function is responsible for adjust the section contents as
8127 1.1 christos necessary, and (if using Rela relocs and generating a
8128 1.1 christos relocatable output file) adjusting the reloc addend as
8129 1.1 christos necessary.
8130 1.1 christos
8131 1.1 christos This function does not have to worry about setting the reloc
8132 1.1 christos address or the reloc symbol index.
8133 1.1 christos
8134 1.1 christos LOCAL_SYMS is a pointer to the swapped in local symbols.
8135 1.1 christos
8136 1.1 christos LOCAL_SECTIONS is an array giving the section in the input file
8137 1.1 christos corresponding to the st_shndx field of each local symbol.
8138 1.1 christos
8139 1.1 christos The global hash table entry for the global symbols can be found
8140 1.1 christos via elf_sym_hashes (input_bfd).
8141 1.1 christos
8142 1.1 christos When generating relocatable output, this function must handle
8143 1.1 christos STB_LOCAL/STT_SECTION symbols specially. The output symbol is
8144 1.1 christos going to be the section symbol corresponding to the output
8145 1.1 christos section, which means that the addend must be adjusted
8146 1.3 christos accordingly. */
8147 1.1 christos
8148 1.1 christos static bfd_boolean
8149 1.3 christos ppc_elf_relocate_section (bfd *output_bfd,
8150 1.1 christos struct bfd_link_info *info,
8151 1.1 christos bfd *input_bfd,
8152 1.7 christos asection *input_section,
8153 1.1 christos bfd_byte *contents,
8154 1.3 christos Elf_Internal_Rela *relocs,
8155 1.3 christos Elf_Internal_Sym *local_syms,
8156 1.1 christos asection **local_sections)
8157 1.1 christos {
8158 1.7 christos Elf_Internal_Shdr *symtab_hdr;
8159 1.1 christos struct elf_link_hash_entry **sym_hashes;
8160 1.1 christos struct ppc_elf_link_hash_table *htab;
8161 1.1 christos Elf_Internal_Rela *rel;
8162 1.3 christos Elf_Internal_Rela *wrel;
8163 1.1 christos Elf_Internal_Rela *relend;
8164 1.1 christos Elf_Internal_Rela outrel;
8165 1.1 christos asection *got2;
8166 1.1 christos bfd_vma *local_got_offsets;
8167 1.1 christos bfd_boolean ret = TRUE;
8168 1.1 christos bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
8169 1.1 christos bfd_boolean is_vxworks_tls;
8170 1.1 christos unsigned int picfixup_size = 0;
8171 1.1 christos struct ppc_elf_relax_info *relax_info = NULL;
8172 1.1 christos
8173 1.1 christos #ifdef DEBUG
8174 1.1 christos _bfd_error_handler ("ppc_elf_relocate_section called for %pB section %pA, "
8175 1.1 christos "%ld relocations%s",
8176 1.1 christos input_bfd, input_section,
8177 1.3 christos (long) input_section->reloc_count,
8178 1.1 christos (bfd_link_relocatable (info)) ? " (relocatable)" : "");
8179 1.1 christos #endif
8180 1.3 christos
8181 1.3 christos got2 = bfd_get_section_by_name (input_bfd, ".got2");
8182 1.3 christos
8183 1.1 christos /* Initialize howto table if not already done. */
8184 1.3 christos if (!ppc_elf_howto_table[R_PPC_ADDR32])
8185 1.1 christos ppc_elf_howto_init ();
8186 1.1 christos
8187 1.1 christos htab = ppc_elf_hash_table (info);
8188 1.1 christos local_got_offsets = elf_local_got_offsets (input_bfd);
8189 1.1 christos symtab_hdr = &elf_symtab_hdr (input_bfd);
8190 1.1 christos sym_hashes = elf_sym_hashes (input_bfd);
8191 1.1 christos /* We have to handle relocations in vxworks .tls_vars sections
8192 1.1 christos specially, because the dynamic loader is 'weird'. */
8193 1.1 christos is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
8194 1.1 christos && !strcmp (input_section->output_section->name,
8195 1.1 christos ".tls_vars"));
8196 1.1 christos if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
8197 1.7 christos relax_info = elf_section_data (input_section)->sec_info;
8198 1.1 christos rel = wrel = relocs;
8199 1.1 christos relend = relocs + input_section->reloc_count;
8200 1.7 christos for (; rel < relend; wrel++, rel++)
8201 1.3 christos {
8202 1.1 christos enum elf_ppc_reloc_type r_type;
8203 1.3 christos bfd_vma addend;
8204 1.1 christos bfd_reloc_status_type r;
8205 1.1 christos Elf_Internal_Sym *sym;
8206 1.1 christos asection *sec;
8207 1.1 christos struct elf_link_hash_entry *h;
8208 1.1 christos const char *sym_name;
8209 1.1 christos reloc_howto_type *howto;
8210 1.1 christos unsigned long r_symndx;
8211 1.1 christos bfd_vma relocation;
8212 1.1 christos bfd_vma branch_bit, from;
8213 1.1 christos bfd_boolean unresolved_reloc, save_unresolved_reloc;
8214 1.1 christos bfd_boolean warned;
8215 1.1 christos unsigned int tls_type, tls_mask, tls_gd;
8216 1.1 christos struct plt_entry **ifunc, **plt_list;
8217 1.1 christos struct reloc_howto_struct alt_howto;
8218 1.1 christos
8219 1.1 christos again:
8220 1.1 christos r_type = ELF32_R_TYPE (rel->r_info);
8221 1.1 christos sym = NULL;
8222 1.3 christos sec = NULL;
8223 1.3 christos h = NULL;
8224 1.1 christos unresolved_reloc = FALSE;
8225 1.1 christos warned = FALSE;
8226 1.1 christos r_symndx = ELF32_R_SYM (rel->r_info);
8227 1.3 christos
8228 1.1 christos if (r_symndx < symtab_hdr->sh_info)
8229 1.1 christos {
8230 1.1 christos sym = local_syms + r_symndx;
8231 1.1 christos sec = local_sections[r_symndx];
8232 1.1 christos sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
8233 1.1 christos
8234 1.1 christos relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
8235 1.1 christos }
8236 1.1 christos else
8237 1.1 christos {
8238 1.1 christos bfd_boolean ignored;
8239 1.1 christos
8240 1.3 christos RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
8241 1.3 christos r_symndx, symtab_hdr, sym_hashes,
8242 1.3 christos h, sec, relocation,
8243 1.3 christos unresolved_reloc, warned, ignored);
8244 1.3 christos
8245 1.3 christos sym_name = h->root.root.string;
8246 1.3 christos }
8247 1.3 christos
8248 1.7 christos if (sec != NULL && discarded_section (sec))
8249 1.3 christos {
8250 1.3 christos /* For relocs against symbols from removed linkonce sections,
8251 1.3 christos or sections discarded by a linker script, we just want the
8252 1.3 christos section contents zeroed. Avoid any special processing. */
8253 1.3 christos howto = NULL;
8254 1.3 christos if (r_type < R_PPC_max)
8255 1.3 christos howto = ppc_elf_howto_table[r_type];
8256 1.1 christos
8257 1.1 christos _bfd_clear_contents (howto, input_bfd, input_section,
8258 1.3 christos contents + rel->r_offset);
8259 1.1 christos wrel->r_offset = rel->r_offset;
8260 1.1 christos wrel->r_info = 0;
8261 1.1 christos wrel->r_addend = 0;
8262 1.1 christos
8263 1.1 christos /* For ld -r, remove relocations in debug sections against
8264 1.1 christos symbols defined in discarded sections. Not done for
8265 1.1 christos non-debug to preserve relocs in .eh_frame which the
8266 1.1 christos eh_frame editing code expects to be present. */
8267 1.1 christos if (bfd_link_relocatable (info)
8268 1.3 christos && (input_section->flags & SEC_DEBUGGING))
8269 1.3 christos wrel--;
8270 1.3 christos
8271 1.3 christos continue;
8272 1.1 christos }
8273 1.1 christos
8274 1.1 christos if (bfd_link_relocatable (info))
8275 1.1 christos {
8276 1.1 christos if (got2 != NULL
8277 1.1 christos && r_type == R_PPC_PLTREL24
8278 1.1 christos && rel->r_addend != 0)
8279 1.1 christos {
8280 1.1 christos /* R_PPC_PLTREL24 is rather special. If non-zero, the
8281 1.1 christos addend specifies the GOT pointer offset within .got2. */
8282 1.1 christos rel->r_addend += got2->output_offset;
8283 1.1 christos }
8284 1.1 christos if (r_type != R_PPC_RELAX_PLT
8285 1.1 christos && r_type != R_PPC_RELAX_PLTREL24
8286 1.1 christos && r_type != R_PPC_RELAX)
8287 1.1 christos goto copy_reloc;
8288 1.1 christos }
8289 1.1 christos
8290 1.1 christos /* TLS optimizations. Replace instruction sequences and relocs
8291 1.1 christos based on information we collected in tls_optimize. We edit
8292 1.1 christos RELOCS so that --emit-relocs will output something sensible
8293 1.1 christos for the final instruction stream. */
8294 1.1 christos tls_mask = 0;
8295 1.1 christos tls_gd = 0;
8296 1.1 christos if (h != NULL)
8297 1.1 christos tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
8298 1.1 christos else if (local_got_offsets != NULL)
8299 1.1 christos {
8300 1.1 christos struct plt_entry **local_plt;
8301 1.1 christos char *lgot_masks;
8302 1.1 christos local_plt
8303 1.1 christos = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
8304 1.1 christos lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
8305 1.1 christos tls_mask = lgot_masks[r_symndx];
8306 1.1 christos }
8307 1.1 christos
8308 1.1 christos /* Ensure reloc mapping code below stays sane. */
8309 1.1 christos if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
8310 1.1 christos || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
8311 1.1 christos || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
8312 1.1 christos || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
8313 1.1 christos || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
8314 1.7 christos || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
8315 1.3 christos || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
8316 1.1 christos || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
8317 1.1 christos abort ();
8318 1.7 christos switch (r_type)
8319 1.3 christos {
8320 1.1 christos default:
8321 1.1 christos break;
8322 1.1 christos
8323 1.1 christos case R_PPC_GOT_TPREL16:
8324 1.1 christos case R_PPC_GOT_TPREL16_LO:
8325 1.1 christos if ((tls_mask & TLS_TLS) != 0
8326 1.1 christos && (tls_mask & TLS_TPREL) == 0)
8327 1.1 christos {
8328 1.1 christos bfd_vma insn;
8329 1.1 christos
8330 1.1 christos insn = bfd_get_32 (input_bfd,
8331 1.7 christos contents + rel->r_offset - d_offset);
8332 1.1 christos insn &= 31 << 21;
8333 1.1 christos insn |= 0x3c020000; /* addis 0,2,0 */
8334 1.1 christos bfd_put_32 (input_bfd, insn,
8335 1.7 christos contents + rel->r_offset - d_offset);
8336 1.1 christos r_type = R_PPC_TPREL16_HA;
8337 1.1 christos rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8338 1.1 christos }
8339 1.1 christos break;
8340 1.1 christos
8341 1.1 christos case R_PPC_TLS:
8342 1.1 christos if ((tls_mask & TLS_TLS) != 0
8343 1.1 christos && (tls_mask & TLS_TPREL) == 0)
8344 1.1 christos {
8345 1.1 christos bfd_vma insn;
8346 1.1 christos
8347 1.1 christos insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
8348 1.1 christos insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
8349 1.1 christos if (insn == 0)
8350 1.1 christos abort ();
8351 1.1 christos bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
8352 1.1 christos r_type = R_PPC_TPREL16_LO;
8353 1.1 christos rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8354 1.1 christos
8355 1.1 christos /* Was PPC_TLS which sits on insn boundary, now
8356 1.1 christos PPC_TPREL16_LO which is at low-order half-word. */
8357 1.1 christos rel->r_offset += d_offset;
8358 1.1 christos }
8359 1.1 christos break;
8360 1.1 christos
8361 1.1 christos case R_PPC_GOT_TLSGD16_HI:
8362 1.3 christos case R_PPC_GOT_TLSGD16_HA:
8363 1.7 christos tls_gd = TLS_TPRELGD;
8364 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8365 1.1 christos goto tls_gdld_hi;
8366 1.1 christos break;
8367 1.1 christos
8368 1.1 christos case R_PPC_GOT_TLSLD16_HI:
8369 1.1 christos case R_PPC_GOT_TLSLD16_HA:
8370 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8371 1.1 christos {
8372 1.1 christos tls_gdld_hi:
8373 1.1 christos if ((tls_mask & tls_gd) != 0)
8374 1.1 christos r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
8375 1.1 christos + R_PPC_GOT_TPREL16);
8376 1.1 christos else
8377 1.1 christos {
8378 1.1 christos rel->r_offset -= d_offset;
8379 1.1 christos bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
8380 1.1 christos r_type = R_PPC_NONE;
8381 1.1 christos }
8382 1.1 christos rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8383 1.1 christos }
8384 1.1 christos break;
8385 1.1 christos
8386 1.1 christos case R_PPC_GOT_TLSGD16:
8387 1.1 christos case R_PPC_GOT_TLSGD16_LO:
8388 1.1 christos tls_gd = TLS_TPRELGD;
8389 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8390 1.1 christos goto tls_ldgd_opt;
8391 1.1 christos break;
8392 1.1 christos
8393 1.1 christos case R_PPC_GOT_TLSLD16:
8394 1.1 christos case R_PPC_GOT_TLSLD16_LO:
8395 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8396 1.3 christos {
8397 1.3 christos unsigned int insn1, insn2;
8398 1.3 christos bfd_vma offset;
8399 1.3 christos
8400 1.7 christos tls_ldgd_opt:
8401 1.3 christos offset = (bfd_vma) -1;
8402 1.1 christos /* If not using the newer R_PPC_TLSGD/LD to mark
8403 1.1 christos __tls_get_addr calls, we must trust that the call
8404 1.1 christos stays with its arg setup insns, ie. that the next
8405 1.3 christos reloc is the __tls_get_addr call associated with
8406 1.1 christos the current reloc. Edit both insns. */
8407 1.1 christos if (input_section->has_tls_get_addr_call
8408 1.1 christos && rel + 1 < relend
8409 1.1 christos && branch_reloc_hash_match (input_bfd, rel + 1,
8410 1.1 christos htab->tls_get_addr))
8411 1.7 christos offset = rel[1].r_offset;
8412 1.1 christos /* We read the low GOT_TLS insn because we need to keep
8413 1.1 christos the destination reg. It may be something other than
8414 1.1 christos the usual r3, and moved to r3 before the call by
8415 1.1 christos intervening code. */
8416 1.1 christos insn1 = bfd_get_32 (input_bfd,
8417 1.1 christos contents + rel->r_offset - d_offset);
8418 1.1 christos if ((tls_mask & tls_gd) != 0)
8419 1.1 christos {
8420 1.3 christos /* IE */
8421 1.3 christos insn1 &= (0x1f << 21) | (0x1f << 16);
8422 1.1 christos insn1 |= 32 << 26; /* lwz */
8423 1.1 christos if (offset != (bfd_vma) -1)
8424 1.1 christos {
8425 1.1 christos rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8426 1.1 christos insn2 = 0x7c631214; /* add 3,3,2 */
8427 1.1 christos bfd_put_32 (input_bfd, insn2, contents + offset);
8428 1.1 christos }
8429 1.1 christos r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
8430 1.1 christos + R_PPC_GOT_TPREL16);
8431 1.1 christos rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8432 1.1 christos }
8433 1.1 christos else
8434 1.1 christos {
8435 1.1 christos /* LE */
8436 1.1 christos insn1 &= 0x1f << 21;
8437 1.1 christos insn1 |= 0x3c020000; /* addis r,2,0 */
8438 1.1 christos if (tls_gd == 0)
8439 1.1 christos {
8440 1.1 christos /* Was an LD reloc. */
8441 1.1 christos for (r_symndx = 0;
8442 1.1 christos r_symndx < symtab_hdr->sh_info;
8443 1.1 christos r_symndx++)
8444 1.1 christos if (local_sections[r_symndx] == sec)
8445 1.1 christos break;
8446 1.7 christos if (r_symndx >= symtab_hdr->sh_info)
8447 1.1 christos r_symndx = STN_UNDEF;
8448 1.1 christos rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8449 1.7 christos if (r_symndx != STN_UNDEF)
8450 1.1 christos rel->r_addend -= (local_syms[r_symndx].st_value
8451 1.1 christos + sec->output_offset
8452 1.1 christos + sec->output_section->vma);
8453 1.1 christos }
8454 1.1 christos r_type = R_PPC_TPREL16_HA;
8455 1.3 christos rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8456 1.1 christos if (offset != (bfd_vma) -1)
8457 1.1 christos {
8458 1.1 christos rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8459 1.1 christos rel[1].r_offset = offset + d_offset;
8460 1.1 christos rel[1].r_addend = rel->r_addend;
8461 1.7 christos insn2 = 0x38630000; /* addi 3,3,0 */
8462 1.7 christos bfd_put_32 (input_bfd, insn2, contents + offset);
8463 1.1 christos }
8464 1.1 christos }
8465 1.1 christos bfd_put_32 (input_bfd, insn1,
8466 1.1 christos contents + rel->r_offset - d_offset);
8467 1.7 christos if (tls_gd == 0)
8468 1.7 christos {
8469 1.7 christos /* We changed the symbol on an LD reloc. Start over
8470 1.7 christos in order to get h, sym, sec etc. right. */
8471 1.7 christos goto again;
8472 1.7 christos }
8473 1.7 christos }
8474 1.1 christos break;
8475 1.1 christos
8476 1.1 christos case R_PPC_TLSGD:
8477 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
8478 1.1 christos && rel + 1 < relend)
8479 1.1 christos {
8480 1.1 christos unsigned int insn2;
8481 1.1 christos bfd_vma offset = rel->r_offset;
8482 1.1 christos
8483 1.1 christos if (is_plt_seq_reloc (ELF32_R_TYPE (rel[1].r_info)))
8484 1.1 christos {
8485 1.1 christos bfd_put_32 (input_bfd, NOP, contents + offset);
8486 1.1 christos rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8487 1.1 christos break;
8488 1.7 christos }
8489 1.1 christos
8490 1.1 christos if ((tls_mask & TLS_TPRELGD) != 0)
8491 1.1 christos {
8492 1.1 christos /* IE */
8493 1.1 christos r_type = R_PPC_NONE;
8494 1.1 christos insn2 = 0x7c631214; /* add 3,3,2 */
8495 1.1 christos }
8496 1.7 christos else
8497 1.7 christos {
8498 1.1 christos /* LE */
8499 1.1 christos r_type = R_PPC_TPREL16_LO;
8500 1.1 christos rel->r_offset += d_offset;
8501 1.7 christos insn2 = 0x38630000; /* addi 3,3,0 */
8502 1.7 christos }
8503 1.7 christos rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8504 1.7 christos bfd_put_32 (input_bfd, insn2, contents + offset);
8505 1.7 christos /* Zap the reloc on the _tls_get_addr call too. */
8506 1.7 christos BFD_ASSERT (offset == rel[1].r_offset);
8507 1.7 christos rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8508 1.1 christos }
8509 1.1 christos break;
8510 1.1 christos
8511 1.1 christos case R_PPC_TLSLD:
8512 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
8513 1.1 christos && rel + 1 < relend)
8514 1.1 christos {
8515 1.1 christos unsigned int insn2;
8516 1.1 christos
8517 1.1 christos if (is_plt_seq_reloc (ELF32_R_TYPE (rel[1].r_info)))
8518 1.1 christos {
8519 1.1 christos bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
8520 1.1 christos rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8521 1.1 christos break;
8522 1.1 christos }
8523 1.1 christos
8524 1.7 christos for (r_symndx = 0;
8525 1.1 christos r_symndx < symtab_hdr->sh_info;
8526 1.1 christos r_symndx++)
8527 1.1 christos if (local_sections[r_symndx] == sec)
8528 1.1 christos break;
8529 1.3 christos if (r_symndx >= symtab_hdr->sh_info)
8530 1.1 christos r_symndx = STN_UNDEF;
8531 1.1 christos rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8532 1.1 christos if (r_symndx != STN_UNDEF)
8533 1.1 christos rel->r_addend -= (local_syms[r_symndx].st_value
8534 1.1 christos + sec->output_offset
8535 1.1 christos + sec->output_section->vma);
8536 1.1 christos
8537 1.1 christos rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8538 1.1 christos rel->r_offset += d_offset;
8539 1.1 christos insn2 = 0x38630000; /* addi 3,3,0 */
8540 1.1 christos bfd_put_32 (input_bfd, insn2,
8541 1.1 christos contents + rel->r_offset - d_offset);
8542 1.1 christos /* Zap the reloc on the _tls_get_addr call too. */
8543 1.1 christos BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
8544 1.1 christos rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8545 1.7 christos goto again;
8546 1.1 christos }
8547 1.1 christos break;
8548 1.1 christos }
8549 1.1 christos
8550 1.1 christos /* Handle other relocations that tweak non-addend part of insn. */
8551 1.7 christos branch_bit = 0;
8552 1.1 christos switch (r_type)
8553 1.7 christos {
8554 1.1 christos default:
8555 1.1 christos break;
8556 1.1 christos
8557 1.1 christos /* Branch taken prediction relocations. */
8558 1.1 christos case R_PPC_ADDR14_BRTAKEN:
8559 1.1 christos case R_PPC_REL14_BRTAKEN:
8560 1.1 christos branch_bit = BRANCH_PREDICT_BIT;
8561 1.1 christos /* Fall through. */
8562 1.1 christos
8563 1.1 christos /* Branch not taken prediction relocations. */
8564 1.1 christos case R_PPC_ADDR14_BRNTAKEN:
8565 1.7 christos case R_PPC_REL14_BRNTAKEN:
8566 1.7 christos {
8567 1.7 christos unsigned int insn;
8568 1.7 christos
8569 1.7 christos insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
8570 1.7 christos insn &= ~BRANCH_PREDICT_BIT;
8571 1.7 christos insn |= branch_bit;
8572 1.7 christos
8573 1.7 christos from = (rel->r_offset
8574 1.7 christos + input_section->output_offset
8575 1.7 christos + input_section->output_section->vma);
8576 1.7 christos
8577 1.7 christos /* Invert 'y' bit if not the default. */
8578 1.7 christos if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8579 1.7 christos insn ^= BRANCH_PREDICT_BIT;
8580 1.7 christos
8581 1.7 christos bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
8582 1.7 christos }
8583 1.7 christos break;
8584 1.7 christos
8585 1.7 christos case R_PPC_PLT16_HA:
8586 1.7 christos {
8587 1.7 christos unsigned int insn;
8588 1.7 christos
8589 1.7 christos insn = bfd_get_32 (input_bfd,
8590 1.7 christos contents + rel->r_offset - d_offset);
8591 1.1 christos if ((insn & (0x3f << 26)) == 15u << 26
8592 1.7 christos && (insn & (0x1f << 16)) != 0)
8593 1.1 christos {
8594 1.1 christos if (!bfd_link_pic (info))
8595 1.3 christos {
8596 1.3 christos /* Convert addis to lis. */
8597 1.3 christos insn &= ~(0x1f << 16);
8598 1.3 christos bfd_put_32 (input_bfd, insn,
8599 1.3 christos contents + rel->r_offset - d_offset);
8600 1.3 christos }
8601 1.3 christos }
8602 1.3 christos else if (bfd_link_pic (info))
8603 1.3 christos info->callbacks->einfo
8604 1.3 christos (_("%P: %H: error: %s with unexpected instruction %x\n"),
8605 1.3 christos input_bfd, input_section, rel->r_offset,
8606 1.3 christos "R_PPC_PLT16_HA", insn);
8607 1.3 christos }
8608 1.3 christos break;
8609 1.7 christos }
8610 1.3 christos
8611 1.3 christos if (ELIMINATE_COPY_RELOCS
8612 1.3 christos && h != NULL
8613 1.3 christos && !h->def_regular
8614 1.3 christos && h->protected_def
8615 1.3 christos && ppc_elf_hash_entry (h)->has_addr16_ha
8616 1.3 christos && ppc_elf_hash_entry (h)->has_addr16_lo
8617 1.3 christos && htab->params->pic_fixup > 0)
8618 1.3 christos {
8619 1.3 christos /* Convert lis;addi or lis;load/store accessing a protected
8620 1.3 christos variable defined in a shared library to PIC. */
8621 1.3 christos unsigned int insn;
8622 1.3 christos
8623 1.3 christos if (r_type == R_PPC_ADDR16_HA)
8624 1.3 christos {
8625 1.7 christos insn = bfd_get_32 (input_bfd,
8626 1.3 christos contents + rel->r_offset - d_offset);
8627 1.3 christos if ((insn & (0x3f << 26)) == (15u << 26)
8628 1.7 christos && (insn & (0x1f << 16)) == 0 /* lis */)
8629 1.3 christos {
8630 1.7 christos bfd_byte *p;
8631 1.7 christos bfd_vma off;
8632 1.3 christos bfd_vma got_addr;
8633 1.3 christos
8634 1.3 christos p = (contents + input_section->size
8635 1.3 christos - relax_info->workaround_size
8636 1.3 christos - relax_info->picfixup_size
8637 1.7 christos + picfixup_size);
8638 1.7 christos off = (p - contents) - (rel->r_offset - d_offset);
8639 1.3 christos if (off > 0x1fffffc || (off & 3) != 0)
8640 1.3 christos info->callbacks->einfo
8641 1.3 christos (_("%H: fixup branch overflow\n"),
8642 1.3 christos input_bfd, input_section, rel->r_offset);
8643 1.3 christos
8644 1.3 christos bfd_put_32 (input_bfd, B | off,
8645 1.7 christos contents + rel->r_offset - d_offset);
8646 1.3 christos got_addr = (htab->elf.sgot->output_section->vma
8647 1.7 christos + htab->elf.sgot->output_offset
8648 1.3 christos + (h->got.offset & ~1));
8649 1.3 christos wrel->r_offset = (p - contents) + d_offset;
8650 1.3 christos wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8651 1.3 christos wrel->r_addend = got_addr;
8652 1.3 christos insn &= ~0xffff;
8653 1.3 christos insn |= ((unsigned int) (got_addr + 0x8000) >> 16) & 0xffff;
8654 1.3 christos bfd_put_32 (input_bfd, insn, p);
8655 1.3 christos
8656 1.3 christos /* Convert lis to lwz, loading address from GOT. */
8657 1.3 christos insn &= ~0xffff;
8658 1.3 christos insn ^= (32u ^ 15u) << 26;
8659 1.3 christos insn |= (insn & (0x1f << 21)) >> 5;
8660 1.3 christos insn |= got_addr & 0xffff;
8661 1.3 christos bfd_put_32 (input_bfd, insn, p + 4);
8662 1.3 christos
8663 1.7 christos bfd_put_32 (input_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
8664 1.7 christos picfixup_size += 12;
8665 1.7 christos
8666 1.7 christos /* Use one of the spare relocs, so --emit-relocs
8667 1.7 christos output is reasonable. */
8668 1.3 christos memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8669 1.3 christos wrel++, rel++;
8670 1.3 christos rel->r_offset = wrel[-1].r_offset + 4;
8671 1.3 christos rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
8672 1.7 christos rel->r_addend = wrel[-1].r_addend;
8673 1.3 christos
8674 1.3 christos /* Continue on as if we had a got reloc, to output
8675 1.3 christos dynamic reloc. */
8676 1.3 christos r_type = R_PPC_GOT16_LO;
8677 1.3 christos }
8678 1.3 christos else
8679 1.3 christos _bfd_error_handler
8680 1.3 christos /* xgettext:c-format */
8681 1.3 christos (_("%pB(%pA+%#" PRIx64 "): error: "
8682 1.3 christos "%s with unexpected instruction %#x"),
8683 1.3 christos input_bfd, input_section, (uint64_t) rel->r_offset,
8684 1.3 christos "R_PPC_ADDR16_HA", insn);
8685 1.3 christos }
8686 1.3 christos else if (r_type == R_PPC_ADDR16_LO)
8687 1.3 christos {
8688 1.3 christos insn = bfd_get_32 (input_bfd,
8689 1.3 christos contents + rel->r_offset - d_offset);
8690 1.3 christos if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8691 1.3 christos || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8692 1.3 christos || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8693 1.3 christos || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8694 1.3 christos || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8695 1.3 christos || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8696 1.3 christos || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8697 1.3 christos || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8698 1.3 christos || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8699 1.7 christos || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8700 1.7 christos || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8701 1.7 christos || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8702 1.7 christos || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8703 1.7 christos || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8704 1.3 christos || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8705 1.3 christos && (insn & 3) != 1)
8706 1.3 christos || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8707 1.3 christos && ((insn & 3) == 0 || (insn & 3) == 3)))
8708 1.1 christos {
8709 1.1 christos /* Arrange to apply the reloc addend, if any. */
8710 1.1 christos relocation = 0;
8711 1.1 christos unresolved_reloc = FALSE;
8712 1.1 christos rel->r_info = ELF32_R_INFO (0, r_type);
8713 1.1 christos }
8714 1.1 christos else
8715 1.1 christos _bfd_error_handler
8716 1.1 christos /* xgettext:c-format */
8717 1.1 christos (_("%pB(%pA+%#" PRIx64 "): error: "
8718 1.1 christos "%s with unexpected instruction %#x"),
8719 1.1 christos input_bfd, input_section, (uint64_t) rel->r_offset,
8720 1.1 christos "R_PPC_ADDR16_LO", insn);
8721 1.1 christos }
8722 1.1 christos }
8723 1.1 christos
8724 1.1 christos ifunc = NULL;
8725 1.1 christos if (!htab->is_vxworks)
8726 1.1 christos {
8727 1.1 christos struct plt_entry *ent;
8728 1.1 christos
8729 1.1 christos if (h != NULL)
8730 1.3 christos {
8731 1.7 christos if (h->type == STT_GNU_IFUNC)
8732 1.7 christos ifunc = &h->plt.plist;
8733 1.7 christos }
8734 1.7 christos else if (local_got_offsets != NULL
8735 1.1 christos && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8736 1.1 christos {
8737 1.7 christos struct plt_entry **local_plt;
8738 1.7 christos
8739 1.7 christos local_plt = (struct plt_entry **) (local_got_offsets
8740 1.7 christos + symtab_hdr->sh_info);
8741 1.7 christos ifunc = local_plt + r_symndx;
8742 1.1 christos }
8743 1.1 christos
8744 1.1 christos ent = NULL;
8745 1.1 christos if (ifunc != NULL
8746 1.1 christos && (!bfd_link_pic (info)
8747 1.7 christos || is_branch_reloc (r_type)
8748 1.7 christos || r_type == R_PPC_PLT16_LO
8749 1.7 christos || r_type == R_PPC_PLT16_HI
8750 1.7 christos || r_type == R_PPC_PLT16_HA))
8751 1.7 christos {
8752 1.7 christos addend = 0;
8753 1.1 christos if (bfd_link_pic (info)
8754 1.7 christos && (r_type == R_PPC_PLTREL24
8755 1.7 christos || r_type == R_PPC_PLT16_LO
8756 1.7 christos || r_type == R_PPC_PLT16_HI
8757 1.7 christos || r_type == R_PPC_PLT16_HA))
8758 1.7 christos addend = rel->r_addend;
8759 1.7 christos ent = find_plt_ent (ifunc, got2, addend);
8760 1.7 christos }
8761 1.7 christos if (ent != NULL)
8762 1.7 christos {
8763 1.7 christos if (bfd_link_pic (info)
8764 1.7 christos && ent->sec != got2
8765 1.7 christos && htab->plt_type != PLT_NEW
8766 1.7 christos && (!htab->elf.dynamic_sections_created
8767 1.1 christos || h == NULL
8768 1.1 christos || h->dynindx == -1))
8769 1.1 christos {
8770 1.1 christos /* Uh oh, we are going to create a pic glink stub
8771 1.1 christos for an ifunc (here for h == NULL and later in
8772 1.3 christos finish_dynamic_symbol for h != NULL), and
8773 1.3 christos apparently are using code compiled with
8774 1.1 christos -mbss-plt. The difficulty is that -mbss-plt code
8775 1.1 christos gives no indication via a magic PLTREL24 addend
8776 1.1 christos whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8777 1.1 christos is pointing into a .got2 section (and how far
8778 1.7 christos into .got2). */
8779 1.7 christos info->callbacks->einfo
8780 1.1 christos /* xgettext:c-format */
8781 1.1 christos (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"),
8782 1.1 christos input_bfd, input_section, rel->r_offset, sym_name);
8783 1.1 christos }
8784 1.1 christos
8785 1.7 christos unresolved_reloc = FALSE;
8786 1.1 christos if (htab->plt_type == PLT_NEW
8787 1.1 christos || !htab->elf.dynamic_sections_created
8788 1.1 christos || h == NULL
8789 1.7 christos || h->dynindx == -1)
8790 1.7 christos relocation = (htab->glink->output_section->vma
8791 1.7 christos + htab->glink->output_offset
8792 1.7 christos + (ent->glink_offset & ~1));
8793 1.7 christos else
8794 1.7 christos relocation = (htab->elf.splt->output_section->vma
8795 1.7 christos + htab->elf.splt->output_offset
8796 1.7 christos + ent->plt.offset);
8797 1.7 christos }
8798 1.7 christos }
8799 1.7 christos
8800 1.7 christos addend = rel->r_addend;
8801 1.7 christos save_unresolved_reloc = unresolved_reloc;
8802 1.7 christos howto = NULL;
8803 1.7 christos if (r_type < R_PPC_max)
8804 1.7 christos howto = ppc_elf_howto_table[r_type];
8805 1.7 christos
8806 1.7 christos switch (r_type)
8807 1.7 christos {
8808 1.7 christos default:
8809 1.7 christos break;
8810 1.7 christos
8811 1.7 christos case R_PPC_TPREL16_HA:
8812 1.7 christos if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
8813 1.7 christos {
8814 1.7 christos bfd_byte *p = contents + (rel->r_offset & ~3);
8815 1.7 christos unsigned int insn = bfd_get_32 (input_bfd, p);
8816 1.7 christos if ((insn & ((0x3f << 26) | 0x1f << 16))
8817 1.7 christos != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)
8818 1.7 christos /* xgettext:c-format */
8819 1.7 christos info->callbacks->minfo
8820 1.7 christos (_("%H: warning: %s unexpected insn %#x.\n"),
8821 1.7 christos input_bfd, input_section, rel->r_offset, howto->name, insn);
8822 1.7 christos else
8823 1.7 christos bfd_put_32 (input_bfd, NOP, p);
8824 1.7 christos }
8825 1.1 christos break;
8826 1.1 christos
8827 1.7 christos case R_PPC_TPREL16_LO:
8828 1.7 christos if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
8829 1.7 christos {
8830 1.1 christos bfd_byte *p = contents + (rel->r_offset & ~3);
8831 1.1 christos unsigned int insn = bfd_get_32 (input_bfd, p);
8832 1.1 christos insn &= ~(0x1f << 16);
8833 1.3 christos insn |= 2 << 16;
8834 1.1 christos bfd_put_32 (input_bfd, insn, p);
8835 1.1 christos }
8836 1.1 christos break;
8837 1.1 christos }
8838 1.1 christos
8839 1.1 christos tls_type = 0;
8840 1.1 christos switch (r_type)
8841 1.1 christos {
8842 1.3 christos default:
8843 1.1 christos /* xgettext:c-format */
8844 1.1 christos _bfd_error_handler (_("%pB: %s unsupported"),
8845 1.1 christos input_bfd, howto->name);
8846 1.1 christos
8847 1.1 christos bfd_set_error (bfd_error_bad_value);
8848 1.1 christos ret = FALSE;
8849 1.1 christos goto copy_reloc;
8850 1.1 christos
8851 1.1 christos case R_PPC_NONE:
8852 1.1 christos case R_PPC_TLS:
8853 1.1 christos case R_PPC_TLSGD:
8854 1.1 christos case R_PPC_TLSLD:
8855 1.1 christos case R_PPC_EMB_MRKREF:
8856 1.1 christos case R_PPC_GNU_VTINHERIT:
8857 1.1 christos case R_PPC_GNU_VTENTRY:
8858 1.1 christos goto copy_reloc;
8859 1.1 christos
8860 1.1 christos /* GOT16 relocations. Like an ADDR16 using the symbol's
8861 1.1 christos address in the GOT as relocation value instead of the
8862 1.1 christos symbol's value itself. Also, create a GOT entry for the
8863 1.1 christos symbol and put the symbol value there. */
8864 1.1 christos case R_PPC_GOT_TLSGD16:
8865 1.1 christos case R_PPC_GOT_TLSGD16_LO:
8866 1.1 christos case R_PPC_GOT_TLSGD16_HI:
8867 1.1 christos case R_PPC_GOT_TLSGD16_HA:
8868 1.1 christos tls_type = TLS_TLS | TLS_GD;
8869 1.1 christos goto dogot;
8870 1.1 christos
8871 1.1 christos case R_PPC_GOT_TLSLD16:
8872 1.1 christos case R_PPC_GOT_TLSLD16_LO:
8873 1.1 christos case R_PPC_GOT_TLSLD16_HI:
8874 1.1 christos case R_PPC_GOT_TLSLD16_HA:
8875 1.1 christos tls_type = TLS_TLS | TLS_LD;
8876 1.1 christos goto dogot;
8877 1.1 christos
8878 1.1 christos case R_PPC_GOT_TPREL16:
8879 1.1 christos case R_PPC_GOT_TPREL16_LO:
8880 1.1 christos case R_PPC_GOT_TPREL16_HI:
8881 1.1 christos case R_PPC_GOT_TPREL16_HA:
8882 1.1 christos tls_type = TLS_TLS | TLS_TPREL;
8883 1.1 christos goto dogot;
8884 1.1 christos
8885 1.1 christos case R_PPC_GOT_DTPREL16:
8886 1.1 christos case R_PPC_GOT_DTPREL16_LO:
8887 1.1 christos case R_PPC_GOT_DTPREL16_HI:
8888 1.1 christos case R_PPC_GOT_DTPREL16_HA:
8889 1.7 christos tls_type = TLS_TLS | TLS_DTPREL;
8890 1.1 christos goto dogot;
8891 1.1 christos
8892 1.1 christos case R_PPC_GOT16:
8893 1.1 christos case R_PPC_GOT16_LO:
8894 1.1 christos case R_PPC_GOT16_HI:
8895 1.1 christos case R_PPC_GOT16_HA:
8896 1.1 christos tls_mask = 0;
8897 1.1 christos dogot:
8898 1.1 christos {
8899 1.7 christos /* Relocation is to the entry for this symbol in the global
8900 1.7 christos offset table. */
8901 1.7 christos bfd_vma off;
8902 1.7 christos bfd_vma *offp;
8903 1.1 christos unsigned long indx;
8904 1.1 christos
8905 1.1 christos if (htab->elf.sgot == NULL)
8906 1.1 christos abort ();
8907 1.1 christos
8908 1.1 christos indx = 0;
8909 1.1 christos if (tls_type == (TLS_TLS | TLS_LD)
8910 1.1 christos && (h == NULL
8911 1.1 christos || !h->def_dynamic))
8912 1.1 christos offp = &htab->tlsld_got.offset;
8913 1.1 christos else if (h != NULL)
8914 1.1 christos {
8915 1.1 christos if (!htab->elf.dynamic_sections_created
8916 1.1 christos || h->dynindx == -1
8917 1.1 christos || SYMBOL_REFERENCES_LOCAL (info, h)
8918 1.1 christos || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
8919 1.1 christos /* This is actually a static link, or it is a
8920 1.1 christos -Bsymbolic link and the symbol is defined
8921 1.1 christos locally, or the symbol was forced to be local
8922 1.1 christos because of a version file. */
8923 1.1 christos ;
8924 1.1 christos else
8925 1.1 christos {
8926 1.1 christos indx = h->dynindx;
8927 1.1 christos unresolved_reloc = FALSE;
8928 1.1 christos }
8929 1.1 christos offp = &h->got.offset;
8930 1.7 christos }
8931 1.7 christos else
8932 1.7 christos {
8933 1.7 christos if (local_got_offsets == NULL)
8934 1.1 christos abort ();
8935 1.1 christos offp = &local_got_offsets[r_symndx];
8936 1.1 christos }
8937 1.1 christos
8938 1.1 christos /* The offset must always be a multiple of 4. We use the
8939 1.1 christos least significant bit to record whether we have already
8940 1.1 christos processed this entry. */
8941 1.1 christos off = *offp;
8942 1.1 christos if ((off & 1) != 0)
8943 1.1 christos off &= ~1;
8944 1.1 christos else
8945 1.1 christos {
8946 1.1 christos unsigned int tls_m = ((tls_mask & TLS_TLS) != 0
8947 1.1 christos ? tls_mask & (TLS_LD | TLS_GD | TLS_DTPREL
8948 1.1 christos | TLS_TPREL | TLS_TPRELGD)
8949 1.1 christos : 0);
8950 1.1 christos
8951 1.1 christos if (offp == &htab->tlsld_got.offset)
8952 1.1 christos tls_m = TLS_LD;
8953 1.1 christos else if (h == NULL
8954 1.1 christos || !h->def_dynamic)
8955 1.1 christos tls_m &= ~TLS_LD;
8956 1.1 christos
8957 1.1 christos /* We might have multiple got entries for this sym.
8958 1.1 christos Initialize them all. */
8959 1.1 christos do
8960 1.1 christos {
8961 1.1 christos int tls_ty = 0;
8962 1.1 christos
8963 1.1 christos if ((tls_m & TLS_LD) != 0)
8964 1.1 christos {
8965 1.1 christos tls_ty = TLS_TLS | TLS_LD;
8966 1.1 christos tls_m &= ~TLS_LD;
8967 1.1 christos }
8968 1.1 christos else if ((tls_m & TLS_GD) != 0)
8969 1.7 christos {
8970 1.7 christos tls_ty = TLS_TLS | TLS_GD;
8971 1.7 christos tls_m &= ~TLS_GD;
8972 1.7 christos }
8973 1.7 christos else if ((tls_m & TLS_DTPREL) != 0)
8974 1.7 christos {
8975 1.7 christos tls_ty = TLS_TLS | TLS_DTPREL;
8976 1.7 christos tls_m &= ~TLS_DTPREL;
8977 1.1 christos }
8978 1.7 christos else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8979 1.1 christos {
8980 1.1 christos tls_ty = TLS_TLS | TLS_TPREL;
8981 1.3 christos tls_m = 0;
8982 1.7 christos }
8983 1.7 christos
8984 1.7 christos /* Generate relocs for the dynamic linker. */
8985 1.7 christos if (indx != 0
8986 1.7 christos || (bfd_link_pic (info)
8987 1.7 christos && (h == NULL
8988 1.7 christos || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)
8989 1.7 christos || offp == &htab->tlsld_got.offset)
8990 1.7 christos && !(tls_ty == (TLS_TLS | TLS_TPREL)
8991 1.1 christos && bfd_link_executable (info)
8992 1.1 christos && SYMBOL_REFERENCES_LOCAL (info, h))))
8993 1.1 christos {
8994 1.1 christos asection *rsec = htab->elf.srelgot;
8995 1.1 christos bfd_byte * loc;
8996 1.1 christos
8997 1.1 christos if (ifunc != NULL)
8998 1.1 christos {
8999 1.1 christos rsec = htab->elf.irelplt;
9000 1.1 christos if (indx == 0)
9001 1.1 christos htab->local_ifunc_resolver = 1;
9002 1.1 christos else if (is_static_defined (h))
9003 1.1 christos htab->maybe_local_ifunc_resolver = 1;
9004 1.1 christos }
9005 1.1 christos outrel.r_offset = (htab->elf.sgot->output_section->vma
9006 1.1 christos + htab->elf.sgot->output_offset
9007 1.1 christos + off);
9008 1.1 christos outrel.r_addend = 0;
9009 1.1 christos if (tls_ty & (TLS_LD | TLS_GD))
9010 1.1 christos {
9011 1.1 christos outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
9012 1.1 christos if (tls_ty == (TLS_TLS | TLS_GD))
9013 1.1 christos {
9014 1.1 christos loc = rsec->contents;
9015 1.1 christos loc += (rsec->reloc_count++
9016 1.1 christos * sizeof (Elf32_External_Rela));
9017 1.1 christos bfd_elf32_swap_reloca_out (output_bfd,
9018 1.1 christos &outrel, loc);
9019 1.1 christos outrel.r_offset += 4;
9020 1.1 christos outrel.r_info
9021 1.1 christos = ELF32_R_INFO (indx, R_PPC_DTPREL32);
9022 1.3 christos }
9023 1.3 christos }
9024 1.3 christos else if (tls_ty == (TLS_TLS | TLS_DTPREL))
9025 1.3 christos outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
9026 1.3 christos else if (tls_ty == (TLS_TLS | TLS_TPREL))
9027 1.3 christos outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
9028 1.1 christos else if (indx != 0)
9029 1.1 christos outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
9030 1.1 christos else if (ifunc != NULL)
9031 1.1 christos outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
9032 1.1 christos else
9033 1.1 christos outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
9034 1.1 christos if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
9035 1.1 christos {
9036 1.1 christos outrel.r_addend += relocation;
9037 1.1 christos if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
9038 1.1 christos {
9039 1.1 christos if (htab->elf.tls_sec == NULL)
9040 1.1 christos outrel.r_addend = 0;
9041 1.7 christos else
9042 1.1 christos outrel.r_addend -= htab->elf.tls_sec->vma;
9043 1.3 christos }
9044 1.3 christos }
9045 1.3 christos loc = rsec->contents;
9046 1.3 christos loc += (rsec->reloc_count++
9047 1.7 christos * sizeof (Elf32_External_Rela));
9048 1.7 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
9049 1.7 christos }
9050 1.7 christos
9051 1.7 christos /* Init the .got section contents if we're not
9052 1.3 christos emitting a reloc. */
9053 1.3 christos else
9054 1.1 christos {
9055 1.7 christos bfd_vma value = relocation;
9056 1.1 christos
9057 1.7 christos if (tls_ty != 0)
9058 1.7 christos {
9059 1.1 christos if (htab->elf.tls_sec == NULL)
9060 1.1 christos value = 0;
9061 1.1 christos else
9062 1.7 christos {
9063 1.7 christos if (tls_ty & TLS_LD)
9064 1.1 christos value = 0;
9065 1.1 christos else
9066 1.1 christos value -= htab->elf.tls_sec->vma + DTP_OFFSET;
9067 1.1 christos if (tls_ty & TLS_TPREL)
9068 1.1 christos value += DTP_OFFSET - TP_OFFSET;
9069 1.1 christos }
9070 1.1 christos
9071 1.1 christos if (tls_ty & (TLS_LD | TLS_GD))
9072 1.1 christos {
9073 1.1 christos bfd_put_32 (input_bfd, value,
9074 1.1 christos htab->elf.sgot->contents + off + 4);
9075 1.1 christos value = 1;
9076 1.1 christos }
9077 1.1 christos }
9078 1.1 christos bfd_put_32 (input_bfd, value,
9079 1.1 christos htab->elf.sgot->contents + off);
9080 1.1 christos }
9081 1.1 christos
9082 1.1 christos off += 4;
9083 1.1 christos if (tls_ty & (TLS_LD | TLS_GD))
9084 1.1 christos off += 4;
9085 1.1 christos }
9086 1.1 christos while (tls_m != 0);
9087 1.1 christos
9088 1.1 christos off = *offp;
9089 1.1 christos *offp = off | 1;
9090 1.1 christos }
9091 1.1 christos
9092 1.1 christos if (off >= (bfd_vma) -2)
9093 1.1 christos abort ();
9094 1.1 christos
9095 1.1 christos if ((tls_type & TLS_TLS) != 0)
9096 1.1 christos {
9097 1.1 christos if (tls_type != (TLS_TLS | TLS_LD))
9098 1.1 christos {
9099 1.1 christos if ((tls_mask & TLS_LD) != 0
9100 1.3 christos && !(h == NULL
9101 1.3 christos || !h->def_dynamic))
9102 1.3 christos off += 8;
9103 1.3 christos if (tls_type != (TLS_TLS | TLS_GD))
9104 1.7 christos {
9105 1.7 christos if ((tls_mask & TLS_GD) != 0)
9106 1.1 christos off += 8;
9107 1.1 christos if (tls_type != (TLS_TLS | TLS_DTPREL))
9108 1.1 christos {
9109 1.1 christos if ((tls_mask & TLS_DTPREL) != 0)
9110 1.1 christos off += 4;
9111 1.1 christos }
9112 1.1 christos }
9113 1.1 christos }
9114 1.1 christos }
9115 1.7 christos
9116 1.7 christos /* If here for a picfixup, we're done. */
9117 1.1 christos if (r_type != ELF32_R_TYPE (rel->r_info))
9118 1.1 christos goto copy_reloc;
9119 1.1 christos
9120 1.1 christos relocation = (htab->elf.sgot->output_section->vma
9121 1.3 christos + htab->elf.sgot->output_offset
9122 1.1 christos + off
9123 1.3 christos - SYM_VAL (htab->elf.hgot));
9124 1.1 christos
9125 1.1 christos /* Addends on got relocations don't make much sense.
9126 1.1 christos x+off@got is actually x@got+off, and since the got is
9127 1.1 christos generated by a hash table traversal, the value in the
9128 1.1 christos got at entry m+n bears little relation to the entry m. */
9129 1.6 christos if (addend != 0)
9130 1.6 christos info->callbacks->einfo
9131 1.6 christos /* xgettext:c-format */
9132 1.6 christos (_("%H: non-zero addend on %s reloc against `%s'\n"),
9133 1.6 christos input_bfd, input_section, rel->r_offset,
9134 1.6 christos howto->name,
9135 1.3 christos sym_name);
9136 1.1 christos }
9137 1.7 christos break;
9138 1.7 christos
9139 1.7 christos /* Relocations that need no special processing. */
9140 1.7 christos case R_PPC_LOCAL24PC:
9141 1.7 christos /* It makes no sense to point a local relocation
9142 1.7 christos at a symbol not in this object. */
9143 1.7 christos if (unresolved_reloc)
9144 1.7 christos {
9145 1.7 christos (*info->callbacks->undefined_symbol) (info,
9146 1.7 christos h->root.root.string,
9147 1.7 christos input_bfd,
9148 1.7 christos input_section,
9149 1.7 christos rel->r_offset,
9150 1.7 christos TRUE);
9151 1.7 christos goto copy_reloc;
9152 1.1 christos }
9153 1.1 christos if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info))
9154 1.1 christos {
9155 1.1 christos /* @local on an ifunc does not really make sense since
9156 1.1 christos the ifunc resolver can take you anywhere. More
9157 1.1 christos seriously, calls to ifuncs must go through a plt call
9158 1.3 christos stub, and for pic the plt call stubs uses r30 to
9159 1.3 christos access the PLT. The problem is that a call that is
9160 1.1 christos local won't have the +32k reloc addend trick marking
9161 1.1 christos -fPIC code, so the linker won't know whether r30 is
9162 1.1 christos _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
9163 1.1 christos /* xgettext:c-format */
9164 1.1 christos info->callbacks->einfo (_("%X%H: @local call to ifunc %s\n"),
9165 1.1 christos input_bfd, input_section, rel->r_offset,
9166 1.1 christos h->root.root.string);
9167 1.1 christos }
9168 1.1 christos break;
9169 1.1 christos
9170 1.1 christos case R_PPC_DTPREL16:
9171 1.1 christos case R_PPC_DTPREL16_LO:
9172 1.1 christos case R_PPC_DTPREL16_HI:
9173 1.1 christos case R_PPC_DTPREL16_HA:
9174 1.1 christos if (htab->elf.tls_sec != NULL)
9175 1.1 christos addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
9176 1.1 christos break;
9177 1.7 christos
9178 1.1 christos /* Relocations that may need to be propagated if this is a shared
9179 1.1 christos object. */
9180 1.7 christos case R_PPC_TPREL16:
9181 1.1 christos case R_PPC_TPREL16_LO:
9182 1.1 christos case R_PPC_TPREL16_HI:
9183 1.3 christos case R_PPC_TPREL16_HA:
9184 1.3 christos if (h != NULL
9185 1.1 christos && h->root.type == bfd_link_hash_undefweak
9186 1.7 christos && h->dynindx == -1)
9187 1.7 christos {
9188 1.1 christos /* Make this relocation against an undefined weak symbol
9189 1.1 christos resolve to zero. This is really just a tweak, since
9190 1.1 christos code using weak externs ought to check that they are
9191 1.3 christos defined before using them. */
9192 1.3 christos bfd_byte *p = contents + rel->r_offset - d_offset;
9193 1.1 christos unsigned int insn = bfd_get_32 (input_bfd, p);
9194 1.1 christos insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
9195 1.1 christos if (insn != 0)
9196 1.3 christos bfd_put_32 (input_bfd, insn, p);
9197 1.3 christos break;
9198 1.1 christos }
9199 1.1 christos if (htab->elf.tls_sec != NULL)
9200 1.1 christos addend -= htab->elf.tls_sec->vma + TP_OFFSET;
9201 1.1 christos /* The TPREL16 relocs shouldn't really be used in shared
9202 1.1 christos libs or with non-local symbols as that will result in
9203 1.1 christos DT_TEXTREL being set, but support them anyway. */
9204 1.1 christos goto dodyn;
9205 1.1 christos
9206 1.1 christos case R_PPC_TPREL32:
9207 1.1 christos if (htab->elf.tls_sec != NULL)
9208 1.1 christos addend -= htab->elf.tls_sec->vma + TP_OFFSET;
9209 1.3 christos goto dodyn;
9210 1.1 christos
9211 1.1 christos case R_PPC_DTPREL32:
9212 1.1 christos if (htab->elf.tls_sec != NULL)
9213 1.1 christos addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
9214 1.1 christos goto dodyn;
9215 1.1 christos
9216 1.1 christos case R_PPC_DTPMOD32:
9217 1.1 christos relocation = 1;
9218 1.1 christos addend = 0;
9219 1.1 christos goto dodyn;
9220 1.1 christos
9221 1.1 christos case R_PPC_REL16:
9222 1.1 christos case R_PPC_REL16_LO:
9223 1.1 christos case R_PPC_REL16_HI:
9224 1.1 christos case R_PPC_REL16_HA:
9225 1.1 christos case R_PPC_REL16DX_HA:
9226 1.1 christos break;
9227 1.1 christos
9228 1.1 christos case R_PPC_REL32:
9229 1.1 christos if (h == NULL || h == htab->elf.hgot)
9230 1.1 christos break;
9231 1.1 christos /* fall through */
9232 1.1 christos
9233 1.1 christos case R_PPC_ADDR32:
9234 1.1 christos case R_PPC_ADDR16:
9235 1.1 christos case R_PPC_ADDR16_LO:
9236 1.1 christos case R_PPC_ADDR16_HI:
9237 1.1 christos case R_PPC_ADDR16_HA:
9238 1.1 christos case R_PPC_UADDR32:
9239 1.1 christos case R_PPC_UADDR16:
9240 1.1 christos goto dodyn;
9241 1.1 christos
9242 1.1 christos case R_PPC_VLE_REL8:
9243 1.1 christos case R_PPC_VLE_REL15:
9244 1.3 christos case R_PPC_VLE_REL24:
9245 1.1 christos case R_PPC_REL24:
9246 1.1 christos case R_PPC_REL14:
9247 1.1 christos case R_PPC_REL14_BRTAKEN:
9248 1.1 christos case R_PPC_REL14_BRNTAKEN:
9249 1.1 christos /* If these relocations are not to a named symbol, they can be
9250 1.1 christos handled right here, no need to bother the dynamic linker. */
9251 1.1 christos if (SYMBOL_CALLS_LOCAL (info, h)
9252 1.1 christos || h == htab->elf.hgot)
9253 1.7 christos break;
9254 1.7 christos /* fall through */
9255 1.7 christos
9256 1.7 christos case R_PPC_ADDR24:
9257 1.7 christos case R_PPC_ADDR14:
9258 1.7 christos case R_PPC_ADDR14_BRTAKEN:
9259 1.7 christos case R_PPC_ADDR14_BRNTAKEN:
9260 1.1 christos if (h != NULL && !bfd_link_pic (info))
9261 1.1 christos break;
9262 1.3 christos /* fall through */
9263 1.3 christos
9264 1.7 christos dodyn:
9265 1.7 christos if ((input_section->flags & SEC_ALLOC) == 0
9266 1.1 christos || is_vxworks_tls)
9267 1.1 christos break;
9268 1.1 christos
9269 1.1 christos if (bfd_link_pic (info)
9270 1.1 christos ? ((h == NULL
9271 1.1 christos || ppc_elf_hash_entry (h)->dyn_relocs != NULL)
9272 1.1 christos && ((h != NULL && pc_dynrelocs (h))
9273 1.1 christos || must_be_dyn_reloc (info, r_type)))
9274 1.1 christos : (h != NULL
9275 1.1 christos && ppc_elf_hash_entry (h)->dyn_relocs != NULL))
9276 1.1 christos {
9277 1.1 christos int skip;
9278 1.1 christos bfd_byte *loc;
9279 1.1 christos asection *sreloc;
9280 1.1 christos long indx = 0;
9281 1.1 christos
9282 1.1 christos #ifdef DEBUG
9283 1.1 christos fprintf (stderr, "ppc_elf_relocate_section needs to "
9284 1.1 christos "create relocation for %s\n",
9285 1.1 christos (h && h->root.root.string
9286 1.1 christos ? h->root.root.string : "<unknown>"));
9287 1.1 christos #endif
9288 1.7 christos
9289 1.1 christos /* When generating a shared object, these relocations
9290 1.7 christos are copied into the output file to be resolved at run
9291 1.7 christos time. */
9292 1.1 christos skip = 0;
9293 1.7 christos outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
9294 1.1 christos input_section,
9295 1.1 christos rel->r_offset);
9296 1.1 christos if (outrel.r_offset == (bfd_vma) -1
9297 1.1 christos || outrel.r_offset == (bfd_vma) -2)
9298 1.1 christos skip = (int) outrel.r_offset;
9299 1.1 christos outrel.r_offset += (input_section->output_section->vma
9300 1.1 christos + input_section->output_offset);
9301 1.1 christos
9302 1.1 christos if (skip)
9303 1.1 christos memset (&outrel, 0, sizeof outrel);
9304 1.1 christos else if (!SYMBOL_REFERENCES_LOCAL (info, h))
9305 1.1 christos {
9306 1.1 christos indx = h->dynindx;
9307 1.1 christos BFD_ASSERT (indx != -1);
9308 1.1 christos unresolved_reloc = FALSE;
9309 1.1 christos outrel.r_info = ELF32_R_INFO (indx, r_type);
9310 1.1 christos outrel.r_addend = rel->r_addend;
9311 1.1 christos }
9312 1.1 christos else
9313 1.1 christos {
9314 1.1 christos outrel.r_addend = relocation + rel->r_addend;
9315 1.1 christos
9316 1.1 christos if (r_type != R_PPC_ADDR32)
9317 1.7 christos {
9318 1.7 christos if (ifunc != NULL)
9319 1.1 christos {
9320 1.1 christos /* If we get here when building a static
9321 1.1 christos executable, then the libc startup function
9322 1.1 christos responsible for applying indirect function
9323 1.1 christos relocations is going to complain about
9324 1.1 christos the reloc type.
9325 1.1 christos If we get here when building a dynamic
9326 1.1 christos executable, it will be because we have
9327 1.1 christos a text relocation. The dynamic loader
9328 1.1 christos will set the text segment writable and
9329 1.1 christos non-executable to apply text relocations.
9330 1.1 christos So we'll segfault when trying to run the
9331 1.1 christos indirection function to resolve the reloc. */
9332 1.1 christos info->callbacks->einfo
9333 1.1 christos /* xgettext:c-format */
9334 1.1 christos (_("%H: relocation %s for indirect "
9335 1.1 christos "function %s unsupported\n"),
9336 1.1 christos input_bfd, input_section, rel->r_offset,
9337 1.1 christos howto->name,
9338 1.1 christos sym_name);
9339 1.1 christos ret = FALSE;
9340 1.1 christos }
9341 1.1 christos else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
9342 1.1 christos ;
9343 1.1 christos else if (sec == NULL || sec->owner == NULL)
9344 1.1 christos {
9345 1.1 christos bfd_set_error (bfd_error_bad_value);
9346 1.1 christos ret = FALSE;
9347 1.1 christos }
9348 1.1 christos else
9349 1.1 christos {
9350 1.1 christos asection *osec;
9351 1.1 christos
9352 1.1 christos /* We are turning this relocation into one
9353 1.1 christos against a section symbol. It would be
9354 1.1 christos proper to subtract the symbol's value,
9355 1.1 christos osec->vma, from the emitted reloc addend,
9356 1.1 christos but ld.so expects buggy relocs.
9357 1.1 christos FIXME: Why not always use a zero index? */
9358 1.1 christos osec = sec->output_section;
9359 1.1 christos indx = elf_section_data (osec)->dynindx;
9360 1.1 christos if (indx == 0)
9361 1.1 christos {
9362 1.1 christos osec = htab->elf.text_index_section;
9363 1.1 christos indx = elf_section_data (osec)->dynindx;
9364 1.1 christos }
9365 1.1 christos BFD_ASSERT (indx != 0);
9366 1.7 christos #ifdef DEBUG
9367 1.7 christos if (indx == 0)
9368 1.7 christos printf ("indx=%ld section=%s flags=%08x name=%s\n",
9369 1.7 christos indx, osec->name, osec->flags,
9370 1.7 christos h->root.root.string);
9371 1.7 christos #endif
9372 1.7 christos }
9373 1.7 christos
9374 1.7 christos outrel.r_info = ELF32_R_INFO (indx, r_type);
9375 1.7 christos }
9376 1.7 christos else if (ifunc != NULL)
9377 1.7 christos outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
9378 1.1 christos else
9379 1.1 christos outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
9380 1.1 christos }
9381 1.1 christos
9382 1.1 christos sreloc = elf_section_data (input_section)->sreloc;
9383 1.3 christos if (ifunc)
9384 1.1 christos {
9385 1.7 christos sreloc = htab->elf.irelplt;
9386 1.7 christos if (indx == 0)
9387 1.7 christos htab->local_ifunc_resolver = 1;
9388 1.1 christos else if (is_static_defined (h))
9389 1.1 christos htab->maybe_local_ifunc_resolver = 1;
9390 1.1 christos }
9391 1.1 christos if (sreloc == NULL)
9392 1.1 christos return FALSE;
9393 1.1 christos
9394 1.1 christos loc = sreloc->contents;
9395 1.1 christos loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
9396 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
9397 1.1 christos
9398 1.1 christos if (skip == -1)
9399 1.1 christos goto copy_reloc;
9400 1.1 christos
9401 1.1 christos /* This reloc will be computed at runtime. Clear the memory
9402 1.1 christos so that it contains a predictable value for prelink. */
9403 1.1 christos if (!skip)
9404 1.1 christos {
9405 1.3 christos relocation = howto->pc_relative ? outrel.r_offset : 0;
9406 1.1 christos addend = 0;
9407 1.1 christos break;
9408 1.1 christos }
9409 1.1 christos }
9410 1.1 christos break;
9411 1.1 christos
9412 1.1 christos case R_PPC_RELAX_PLT:
9413 1.1 christos case R_PPC_RELAX_PLTREL24:
9414 1.1 christos if (h != NULL)
9415 1.7 christos {
9416 1.7 christos struct plt_entry *ent;
9417 1.1 christos bfd_vma got2_addend = 0;
9418 1.1 christos
9419 1.7 christos if (r_type == R_PPC_RELAX_PLTREL24)
9420 1.1 christos {
9421 1.1 christos if (bfd_link_pic (info))
9422 1.1 christos got2_addend = addend;
9423 1.3 christos addend = 0;
9424 1.3 christos }
9425 1.3 christos ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
9426 1.3 christos if (htab->plt_type == PLT_NEW)
9427 1.3 christos relocation = (htab->glink->output_section->vma
9428 1.3 christos + htab->glink->output_offset
9429 1.3 christos + ent->glink_offset);
9430 1.3 christos else
9431 1.3 christos relocation = (htab->elf.splt->output_section->vma
9432 1.3 christos + htab->elf.splt->output_offset
9433 1.3 christos + ent->plt.offset);
9434 1.7 christos }
9435 1.7 christos /* Fall through. */
9436 1.7 christos
9437 1.3 christos case R_PPC_RELAX:
9438 1.3 christos {
9439 1.3 christos const int *stub;
9440 1.3 christos size_t size;
9441 1.3 christos size_t insn_offset = rel->r_offset;
9442 1.3 christos unsigned int insn;
9443 1.3 christos
9444 1.3 christos if (bfd_link_pic (info))
9445 1.1 christos {
9446 1.1 christos relocation -= (input_section->output_section->vma
9447 1.3 christos + input_section->output_offset
9448 1.3 christos + rel->r_offset - 4);
9449 1.1 christos stub = shared_stub_entry;
9450 1.3 christos bfd_put_32 (input_bfd, stub[0], contents + insn_offset - 12);
9451 1.3 christos bfd_put_32 (input_bfd, stub[1], contents + insn_offset - 8);
9452 1.3 christos bfd_put_32 (input_bfd, stub[2], contents + insn_offset - 4);
9453 1.7 christos stub += 3;
9454 1.3 christos size = ARRAY_SIZE (shared_stub_entry) - 3;
9455 1.3 christos }
9456 1.3 christos else
9457 1.3 christos {
9458 1.7 christos stub = stub_entry;
9459 1.3 christos size = ARRAY_SIZE (stub_entry);
9460 1.3 christos }
9461 1.3 christos
9462 1.3 christos relocation += addend;
9463 1.3 christos if (bfd_link_relocatable (info))
9464 1.3 christos relocation = 0;
9465 1.3 christos
9466 1.7 christos /* First insn is HA, second is LO. */
9467 1.3 christos insn = *stub++;
9468 1.3 christos insn |= ((relocation + 0x8000) >> 16) & 0xffff;
9469 1.1 christos bfd_put_32 (input_bfd, insn, contents + insn_offset);
9470 1.1 christos insn_offset += 4;
9471 1.1 christos
9472 1.1 christos insn = *stub++;
9473 1.1 christos insn |= relocation & 0xffff;
9474 1.3 christos bfd_put_32 (input_bfd, insn, contents + insn_offset);
9475 1.3 christos insn_offset += 4;
9476 1.3 christos size -= 2;
9477 1.3 christos
9478 1.3 christos while (size != 0)
9479 1.3 christos {
9480 1.3 christos insn = *stub++;
9481 1.1 christos --size;
9482 1.1 christos bfd_put_32 (input_bfd, insn, contents + insn_offset);
9483 1.1 christos insn_offset += 4;
9484 1.1 christos }
9485 1.1 christos
9486 1.1 christos /* Rewrite the reloc and convert one of the trailing nop
9487 1.1 christos relocs to describe this relocation. */
9488 1.1 christos BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
9489 1.1 christos /* The relocs are at the bottom 2 bytes */
9490 1.1 christos wrel->r_offset = rel->r_offset + d_offset;
9491 1.1 christos wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
9492 1.1 christos wrel->r_addend = rel->r_addend;
9493 1.1 christos memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
9494 1.1 christos wrel++, rel++;
9495 1.1 christos wrel->r_offset += 4;
9496 1.1 christos wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
9497 1.1 christos }
9498 1.1 christos continue;
9499 1.1 christos
9500 1.1 christos /* Indirect .sdata relocation. */
9501 1.1 christos case R_PPC_EMB_SDAI16:
9502 1.1 christos BFD_ASSERT (htab->sdata[0].section != NULL);
9503 1.1 christos if (!is_static_defined (htab->sdata[0].sym))
9504 1.1 christos {
9505 1.1 christos unresolved_reloc = TRUE;
9506 1.1 christos break;
9507 1.1 christos }
9508 1.1 christos relocation
9509 1.1 christos = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
9510 1.1 christos h, relocation, rel);
9511 1.1 christos addend = 0;
9512 1.1 christos break;
9513 1.1 christos
9514 1.1 christos /* Indirect .sdata2 relocation. */
9515 1.1 christos case R_PPC_EMB_SDA2I16:
9516 1.1 christos BFD_ASSERT (htab->sdata[1].section != NULL);
9517 1.1 christos if (!is_static_defined (htab->sdata[1].sym))
9518 1.1 christos {
9519 1.1 christos unresolved_reloc = TRUE;
9520 1.1 christos break;
9521 1.1 christos }
9522 1.1 christos relocation
9523 1.1 christos = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
9524 1.1 christos h, relocation, rel);
9525 1.1 christos addend = 0;
9526 1.1 christos break;
9527 1.1 christos
9528 1.1 christos /* Handle the TOC16 reloc. We want to use the offset within the .got
9529 1.1 christos section, not the actual VMA. This is appropriate when generating
9530 1.1 christos an embedded ELF object, for which the .got section acts like the
9531 1.1 christos AIX .toc section. */
9532 1.1 christos case R_PPC_TOC16: /* phony GOT16 relocations */
9533 1.3 christos if (sec == NULL || sec->output_section == NULL)
9534 1.3 christos {
9535 1.3 christos unresolved_reloc = TRUE;
9536 1.3 christos break;
9537 1.1 christos }
9538 1.7 christos BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
9539 1.1 christos ".got") == 0
9540 1.1 christos || strcmp (bfd_get_section_name (sec->owner, sec),
9541 1.1 christos ".cgot") == 0);
9542 1.1 christos
9543 1.1 christos addend -= sec->output_section->vma + sec->output_offset + 0x8000;
9544 1.1 christos break;
9545 1.1 christos
9546 1.1 christos case R_PPC_PLTREL24:
9547 1.1 christos if (h != NULL && ifunc == NULL)
9548 1.1 christos {
9549 1.1 christos struct plt_entry *ent;
9550 1.1 christos
9551 1.1 christos ent = find_plt_ent (&h->plt.plist, got2,
9552 1.1 christos bfd_link_pic (info) ? addend : 0);
9553 1.1 christos if (ent == NULL
9554 1.7 christos || htab->elf.splt == NULL)
9555 1.7 christos {
9556 1.1 christos /* We didn't make a PLT entry for this symbol. This
9557 1.1 christos happens when statically linking PIC code, or when
9558 1.1 christos using -Bsymbolic. */
9559 1.1 christos }
9560 1.1 christos else
9561 1.1 christos {
9562 1.1 christos /* Relocation is to the entry for this symbol in the
9563 1.1 christos procedure linkage table. */
9564 1.1 christos unresolved_reloc = FALSE;
9565 1.1 christos if (htab->plt_type == PLT_NEW)
9566 1.7 christos relocation = (htab->glink->output_section->vma
9567 1.7 christos + htab->glink->output_offset
9568 1.7 christos + ent->glink_offset);
9569 1.7 christos else
9570 1.7 christos relocation = (htab->elf.splt->output_section->vma
9571 1.7 christos + htab->elf.splt->output_offset
9572 1.7 christos + ent->plt.offset);
9573 1.7 christos }
9574 1.7 christos }
9575 1.7 christos
9576 1.7 christos /* R_PPC_PLTREL24 is rather special. If non-zero, the
9577 1.7 christos addend specifies the GOT pointer offset within .got2.
9578 1.7 christos Don't apply it to the relocation field. */
9579 1.7 christos addend = 0;
9580 1.7 christos break;
9581 1.7 christos
9582 1.7 christos case R_PPC_PLTSEQ:
9583 1.7 christos case R_PPC_PLTCALL:
9584 1.7 christos case R_PPC_PLT16_LO:
9585 1.7 christos case R_PPC_PLT16_HI:
9586 1.7 christos case R_PPC_PLT16_HA:
9587 1.7 christos plt_list = NULL;
9588 1.7 christos if (h != NULL)
9589 1.7 christos plt_list = &h->plt.plist;
9590 1.7 christos else if (ifunc != NULL)
9591 1.7 christos plt_list = ifunc;
9592 1.7 christos else if (local_got_offsets != NULL)
9593 1.7 christos {
9594 1.7 christos struct plt_entry **local_plt;
9595 1.7 christos local_plt = (struct plt_entry **) (local_got_offsets
9596 1.7 christos + symtab_hdr->sh_info);
9597 1.7 christos plt_list = local_plt + r_symndx;
9598 1.7 christos }
9599 1.7 christos unresolved_reloc = TRUE;
9600 1.7 christos if (plt_list != NULL)
9601 1.7 christos {
9602 1.7 christos struct plt_entry *ent;
9603 1.7 christos
9604 1.7 christos ent = find_plt_ent (plt_list, got2,
9605 1.7 christos bfd_link_pic (info) ? addend : 0);
9606 1.7 christos if (ent != NULL && ent->plt.offset != (bfd_vma) -1)
9607 1.7 christos {
9608 1.7 christos asection *plt;
9609 1.7 christos
9610 1.7 christos unresolved_reloc = FALSE;
9611 1.7 christos plt = htab->elf.splt;
9612 1.7 christos if (!htab->elf.dynamic_sections_created
9613 1.7 christos || h == NULL
9614 1.7 christos || h->dynindx == -1)
9615 1.7 christos {
9616 1.7 christos if (ifunc != NULL)
9617 1.7 christos plt = htab->elf.iplt;
9618 1.7 christos else
9619 1.7 christos plt = htab->pltlocal;
9620 1.7 christos }
9621 1.7 christos relocation = (plt->output_section->vma
9622 1.7 christos + plt->output_offset
9623 1.7 christos + ent->plt.offset);
9624 1.7 christos if (bfd_link_pic (info))
9625 1.1 christos {
9626 1.1 christos bfd_vma got = 0;
9627 1.1 christos
9628 1.1 christos if (ent->addend >= 32768)
9629 1.1 christos got = (ent->addend
9630 1.1 christos + ent->sec->output_section->vma
9631 1.1 christos + ent->sec->output_offset);
9632 1.1 christos else
9633 1.1 christos got = SYM_VAL (htab->elf.hgot);
9634 1.1 christos relocation -= got;
9635 1.1 christos }
9636 1.1 christos }
9637 1.1 christos }
9638 1.1 christos addend = 0;
9639 1.1 christos break;
9640 1.1 christos
9641 1.3 christos /* Relocate against _SDA_BASE_. */
9642 1.3 christos case R_PPC_SDAREL16:
9643 1.1 christos {
9644 1.7 christos const char *name;
9645 1.7 christos struct elf_link_hash_entry *sda = htab->sdata[0].sym;
9646 1.7 christos
9647 1.7 christos if (sec == NULL
9648 1.1 christos || sec->output_section == NULL
9649 1.1 christos || !is_static_defined (sda))
9650 1.1 christos {
9651 1.1 christos unresolved_reloc = TRUE;
9652 1.1 christos break;
9653 1.1 christos }
9654 1.1 christos addend -= SYM_VAL (sda);
9655 1.1 christos
9656 1.1 christos name = bfd_get_section_name (output_bfd, sec->output_section);
9657 1.1 christos if (!(strcmp (name, ".sdata") == 0
9658 1.1 christos || strcmp (name, ".sbss") == 0))
9659 1.1 christos {
9660 1.1 christos _bfd_error_handler
9661 1.1 christos /* xgettext:c-format */
9662 1.1 christos (_("%pB: the target (%s) of a %s relocation is "
9663 1.1 christos "in the wrong output section (%s)"),
9664 1.1 christos input_bfd,
9665 1.1 christos sym_name,
9666 1.1 christos howto->name,
9667 1.1 christos name);
9668 1.1 christos }
9669 1.1 christos }
9670 1.1 christos break;
9671 1.1 christos
9672 1.3 christos /* Relocate against _SDA2_BASE_. */
9673 1.3 christos case R_PPC_EMB_SDA2REL:
9674 1.1 christos {
9675 1.7 christos const char *name;
9676 1.7 christos struct elf_link_hash_entry *sda = htab->sdata[1].sym;
9677 1.7 christos
9678 1.7 christos if (sec == NULL
9679 1.1 christos || sec->output_section == NULL
9680 1.1 christos || !is_static_defined (sda))
9681 1.1 christos {
9682 1.1 christos unresolved_reloc = TRUE;
9683 1.1 christos break;
9684 1.1 christos }
9685 1.1 christos addend -= SYM_VAL (sda);
9686 1.1 christos
9687 1.1 christos name = bfd_get_section_name (output_bfd, sec->output_section);
9688 1.3 christos if (!(strcmp (name, ".sdata2") == 0
9689 1.7 christos || strcmp (name, ".sbss2") == 0))
9690 1.7 christos {
9691 1.7 christos _bfd_error_handler
9692 1.3 christos /* xgettext:c-format */
9693 1.1 christos (_("%pB: the target (%s) of a %s relocation is "
9694 1.1 christos "in the wrong output section (%s)"),
9695 1.3 christos input_bfd,
9696 1.7 christos sym_name,
9697 1.7 christos howto->name,
9698 1.7 christos name);
9699 1.3 christos }
9700 1.1 christos }
9701 1.1 christos break;
9702 1.3 christos
9703 1.7 christos case R_PPC_VLE_LO16A:
9704 1.7 christos relocation = relocation + addend;
9705 1.7 christos ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9706 1.3 christos contents + rel->r_offset, relocation,
9707 1.1 christos split16a_type, htab->params->vle_reloc_fixup);
9708 1.1 christos goto copy_reloc;
9709 1.3 christos
9710 1.7 christos case R_PPC_VLE_LO16D:
9711 1.7 christos relocation = relocation + addend;
9712 1.7 christos ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9713 1.3 christos contents + rel->r_offset, relocation,
9714 1.1 christos split16d_type, htab->params->vle_reloc_fixup);
9715 1.1 christos goto copy_reloc;
9716 1.3 christos
9717 1.7 christos case R_PPC_VLE_HI16A:
9718 1.7 christos relocation = (relocation + addend) >> 16;
9719 1.7 christos ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9720 1.3 christos contents + rel->r_offset, relocation,
9721 1.1 christos split16a_type, htab->params->vle_reloc_fixup);
9722 1.1 christos goto copy_reloc;
9723 1.3 christos
9724 1.7 christos case R_PPC_VLE_HI16D:
9725 1.7 christos relocation = (relocation + addend) >> 16;
9726 1.7 christos ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9727 1.3 christos contents + rel->r_offset, relocation,
9728 1.1 christos split16d_type, htab->params->vle_reloc_fixup);
9729 1.1 christos goto copy_reloc;
9730 1.1 christos
9731 1.1 christos case R_PPC_VLE_HA16A:
9732 1.1 christos relocation = (relocation + addend + 0x8000) >> 16;
9733 1.1 christos ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9734 1.1 christos contents + rel->r_offset, relocation,
9735 1.1 christos split16a_type, htab->params->vle_reloc_fixup);
9736 1.1 christos goto copy_reloc;
9737 1.3 christos
9738 1.1 christos case R_PPC_VLE_HA16D:
9739 1.1 christos relocation = (relocation + addend + 0x8000) >> 16;
9740 1.1 christos ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9741 1.1 christos contents + rel->r_offset, relocation,
9742 1.1 christos split16d_type, htab->params->vle_reloc_fixup);
9743 1.1 christos goto copy_reloc;
9744 1.1 christos
9745 1.1 christos /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9746 1.1 christos case R_PPC_EMB_SDA21:
9747 1.3 christos case R_PPC_VLE_SDA21:
9748 1.3 christos case R_PPC_EMB_RELSDA:
9749 1.1 christos case R_PPC_VLE_SDA21_LO:
9750 1.1 christos {
9751 1.1 christos const char *name;
9752 1.1 christos int reg;
9753 1.3 christos unsigned int insn;
9754 1.3 christos struct elf_link_hash_entry *sda = NULL;
9755 1.1 christos
9756 1.1 christos if (sec == NULL || sec->output_section == NULL)
9757 1.1 christos {
9758 1.1 christos unresolved_reloc = TRUE;
9759 1.1 christos break;
9760 1.1 christos }
9761 1.1 christos
9762 1.1 christos name = bfd_get_section_name (output_bfd, sec->output_section);
9763 1.1 christos if (strcmp (name, ".sdata") == 0
9764 1.1 christos || strcmp (name, ".sbss") == 0)
9765 1.1 christos {
9766 1.7 christos reg = 13;
9767 1.7 christos sda = htab->sdata[0].sym;
9768 1.7 christos }
9769 1.7 christos else if (strcmp (name, ".sdata2") == 0
9770 1.1 christos || strcmp (name, ".sbss2") == 0)
9771 1.1 christos {
9772 1.1 christos reg = 2;
9773 1.1 christos sda = htab->sdata[1].sym;
9774 1.1 christos }
9775 1.1 christos else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9776 1.1 christos || strcmp (name, ".PPC.EMB.sbss0") == 0)
9777 1.3 christos {
9778 1.1 christos reg = 0;
9779 1.1 christos }
9780 1.1 christos else
9781 1.1 christos {
9782 1.1 christos _bfd_error_handler
9783 1.1 christos /* xgettext:c-format */
9784 1.1 christos (_("%pB: the target (%s) of a %s relocation is "
9785 1.1 christos "in the wrong output section (%s)"),
9786 1.1 christos input_bfd,
9787 1.1 christos sym_name,
9788 1.1 christos howto->name,
9789 1.1 christos name);
9790 1.7 christos
9791 1.1 christos bfd_set_error (bfd_error_bad_value);
9792 1.1 christos ret = FALSE;
9793 1.1 christos goto copy_reloc;
9794 1.1 christos }
9795 1.3 christos
9796 1.3 christos if (sda != NULL)
9797 1.3 christos {
9798 1.3 christos if (!is_static_defined (sda))
9799 1.3 christos {
9800 1.3 christos unresolved_reloc = TRUE;
9801 1.3 christos break;
9802 1.3 christos }
9803 1.3 christos addend -= SYM_VAL (sda);
9804 1.3 christos }
9805 1.3 christos
9806 1.3 christos insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9807 1.3 christos if (reg == 0
9808 1.3 christos && (r_type == R_PPC_VLE_SDA21
9809 1.3 christos || r_type == R_PPC_VLE_SDA21_LO))
9810 1.7 christos {
9811 1.3 christos relocation = relocation + addend;
9812 1.3 christos addend = 0;
9813 1.3 christos
9814 1.3 christos /* Force e_li insn, keeping RT from original insn. */
9815 1.3 christos insn &= 0x1f << 21;
9816 1.1 christos insn |= 28u << 26;
9817 1.1 christos
9818 1.1 christos /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9819 1.1 christos /* Top 4 bits of value to 17..20. */
9820 1.1 christos insn |= (relocation & 0xf0000) >> 5;
9821 1.3 christos /* Next 5 bits of the value to 11..15. */
9822 1.1 christos insn |= (relocation & 0xf800) << 5;
9823 1.1 christos /* And the final 11 bits of the value to bits 21 to 31. */
9824 1.7 christos insn |= relocation & 0x7ff;
9825 1.1 christos
9826 1.1 christos bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9827 1.1 christos
9828 1.1 christos if (r_type == R_PPC_VLE_SDA21
9829 1.1 christos && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9830 1.1 christos goto overflow;
9831 1.1 christos goto copy_reloc;
9832 1.1 christos }
9833 1.1 christos else if (r_type == R_PPC_EMB_SDA21
9834 1.1 christos || r_type == R_PPC_VLE_SDA21
9835 1.1 christos || r_type == R_PPC_VLE_SDA21_LO)
9836 1.1 christos {
9837 1.1 christos /* Fill in register field. */
9838 1.1 christos insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
9839 1.1 christos }
9840 1.1 christos bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9841 1.1 christos }
9842 1.1 christos break;
9843 1.1 christos
9844 1.1 christos case R_PPC_VLE_SDAREL_LO16A:
9845 1.1 christos case R_PPC_VLE_SDAREL_LO16D:
9846 1.3 christos case R_PPC_VLE_SDAREL_HI16A:
9847 1.3 christos case R_PPC_VLE_SDAREL_HI16D:
9848 1.7 christos case R_PPC_VLE_SDAREL_HA16A:
9849 1.3 christos case R_PPC_VLE_SDAREL_HA16D:
9850 1.3 christos {
9851 1.7 christos bfd_vma value;
9852 1.1 christos const char *name;
9853 1.1 christos struct elf_link_hash_entry *sda = NULL;
9854 1.7 christos
9855 1.7 christos if (sec == NULL || sec->output_section == NULL)
9856 1.7 christos {
9857 1.1 christos unresolved_reloc = TRUE;
9858 1.1 christos break;
9859 1.1 christos }
9860 1.1 christos
9861 1.1 christos name = bfd_get_section_name (output_bfd, sec->output_section);
9862 1.1 christos if (strcmp (name, ".sdata") == 0
9863 1.1 christos || strcmp (name, ".sbss") == 0)
9864 1.1 christos sda = htab->sdata[0].sym;
9865 1.3 christos else if (strcmp (name, ".sdata2") == 0
9866 1.1 christos || strcmp (name, ".sbss2") == 0)
9867 1.1 christos sda = htab->sdata[1].sym;
9868 1.7 christos else
9869 1.1 christos {
9870 1.7 christos _bfd_error_handler
9871 1.7 christos /* xgettext:c-format */
9872 1.1 christos (_("%pB: the target (%s) of a %s relocation is "
9873 1.7 christos "in the wrong output section (%s)"),
9874 1.3 christos input_bfd,
9875 1.3 christos sym_name,
9876 1.7 christos howto->name,
9877 1.7 christos name);
9878 1.7 christos
9879 1.7 christos bfd_set_error (bfd_error_bad_value);
9880 1.3 christos ret = FALSE;
9881 1.7 christos goto copy_reloc;
9882 1.7 christos }
9883 1.7 christos
9884 1.7 christos if (sda == NULL || !is_static_defined (sda))
9885 1.3 christos {
9886 1.3 christos unresolved_reloc = TRUE;
9887 1.3 christos break;
9888 1.7 christos }
9889 1.7 christos value = relocation + addend - SYM_VAL (sda);
9890 1.7 christos
9891 1.7 christos if (r_type == R_PPC_VLE_SDAREL_LO16A)
9892 1.3 christos ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9893 1.3 christos contents + rel->r_offset, value,
9894 1.3 christos split16a_type,
9895 1.3 christos htab->params->vle_reloc_fixup);
9896 1.7 christos else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9897 1.7 christos ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9898 1.7 christos contents + rel->r_offset, value,
9899 1.7 christos split16d_type,
9900 1.3 christos htab->params->vle_reloc_fixup);
9901 1.3 christos else if (r_type == R_PPC_VLE_SDAREL_HI16A)
9902 1.3 christos {
9903 1.3 christos value = value >> 16;
9904 1.7 christos ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9905 1.7 christos contents + rel->r_offset, value,
9906 1.7 christos split16a_type,
9907 1.7 christos htab->params->vle_reloc_fixup);
9908 1.3 christos }
9909 1.3 christos else if (r_type == R_PPC_VLE_SDAREL_HI16D)
9910 1.3 christos {
9911 1.3 christos value = value >> 16;
9912 1.7 christos ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9913 1.7 christos contents + rel->r_offset, value,
9914 1.7 christos split16d_type,
9915 1.7 christos htab->params->vle_reloc_fixup);
9916 1.1 christos }
9917 1.1 christos else if (r_type == R_PPC_VLE_SDAREL_HA16A)
9918 1.3 christos {
9919 1.1 christos value = (value + 0x8000) >> 16;
9920 1.7 christos ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9921 1.7 christos contents + rel->r_offset, value,
9922 1.7 christos split16a_type,
9923 1.7 christos htab->params->vle_reloc_fixup);
9924 1.1 christos }
9925 1.1 christos else if (r_type == R_PPC_VLE_SDAREL_HA16D)
9926 1.1 christos {
9927 1.1 christos value = (value + 0x8000) >> 16;
9928 1.1 christos ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9929 1.1 christos contents + rel->r_offset, value,
9930 1.1 christos split16d_type,
9931 1.1 christos htab->params->vle_reloc_fixup);
9932 1.1 christos }
9933 1.1 christos }
9934 1.1 christos goto copy_reloc;
9935 1.1 christos
9936 1.1 christos case R_PPC_VLE_ADDR20:
9937 1.1 christos ppc_elf_vle_split20 (output_bfd, contents + rel->r_offset, relocation);
9938 1.1 christos continue;
9939 1.1 christos
9940 1.1 christos /* Relocate against the beginning of the section. */
9941 1.1 christos case R_PPC_SECTOFF:
9942 1.1 christos case R_PPC_SECTOFF_LO:
9943 1.1 christos case R_PPC_SECTOFF_HI:
9944 1.1 christos case R_PPC_SECTOFF_HA:
9945 1.1 christos if (sec == NULL || sec->output_section == NULL)
9946 1.1 christos {
9947 1.1 christos unresolved_reloc = TRUE;
9948 1.1 christos break;
9949 1.1 christos }
9950 1.1 christos addend -= sec->output_section->vma;
9951 1.1 christos break;
9952 1.1 christos
9953 1.1 christos /* Negative relocations. */
9954 1.1 christos case R_PPC_EMB_NADDR32:
9955 1.1 christos case R_PPC_EMB_NADDR16:
9956 1.1 christos case R_PPC_EMB_NADDR16_LO:
9957 1.1 christos case R_PPC_EMB_NADDR16_HI:
9958 1.1 christos case R_PPC_EMB_NADDR16_HA:
9959 1.7 christos addend -= 2 * relocation;
9960 1.7 christos break;
9961 1.7 christos
9962 1.1 christos case R_PPC_COPY:
9963 1.1 christos case R_PPC_GLOB_DAT:
9964 1.1 christos case R_PPC_JMP_SLOT:
9965 1.3 christos case R_PPC_RELATIVE:
9966 1.1 christos case R_PPC_IRELATIVE:
9967 1.1 christos case R_PPC_PLT32:
9968 1.7 christos case R_PPC_PLTREL32:
9969 1.7 christos case R_PPC_ADDR30:
9970 1.7 christos case R_PPC_EMB_RELSEC16:
9971 1.7 christos case R_PPC_EMB_RELST_LO:
9972 1.7 christos case R_PPC_EMB_RELST_HI:
9973 1.7 christos case R_PPC_EMB_RELST_HA:
9974 1.7 christos case R_PPC_EMB_BIT_FLD:
9975 1.7 christos /* xgettext:c-format */
9976 1.7 christos _bfd_error_handler (_("%pB: %s unsupported"),
9977 1.7 christos input_bfd, howto->name);
9978 1.7 christos
9979 1.7 christos bfd_set_error (bfd_error_invalid_operation);
9980 1.7 christos ret = FALSE;
9981 1.7 christos goto copy_reloc;
9982 1.7 christos }
9983 1.7 christos
9984 1.7 christos switch (r_type)
9985 1.7 christos {
9986 1.7 christos default:
9987 1.7 christos break;
9988 1.7 christos
9989 1.7 christos case R_PPC_PLTCALL:
9990 1.7 christos if (unresolved_reloc)
9991 1.7 christos {
9992 1.7 christos bfd_byte *p = contents + rel->r_offset;
9993 1.7 christos unsigned int insn = bfd_get_32 (input_bfd, p);
9994 1.7 christos insn &= 1;
9995 1.7 christos bfd_put_32 (input_bfd, B | insn, p);
9996 1.7 christos unresolved_reloc = save_unresolved_reloc;
9997 1.7 christos r_type = R_PPC_REL24;
9998 1.7 christos howto = ppc_elf_howto_table[r_type];
9999 1.7 christos }
10000 1.7 christos else if (htab->plt_type != PLT_NEW)
10001 1.7 christos info->callbacks->einfo
10002 1.7 christos (_("%P: %H: %s relocation unsupported for bss-plt\n"),
10003 1.7 christos input_bfd, input_section, rel->r_offset,
10004 1.7 christos howto->name);
10005 1.7 christos break;
10006 1.7 christos
10007 1.7 christos case R_PPC_PLTSEQ:
10008 1.7 christos case R_PPC_PLT16_HA:
10009 1.7 christos case R_PPC_PLT16_LO:
10010 1.1 christos if (unresolved_reloc)
10011 1.1 christos {
10012 1.1 christos bfd_byte *p = contents + (rel->r_offset & ~3);
10013 1.1 christos bfd_put_32 (input_bfd, NOP, p);
10014 1.1 christos unresolved_reloc = FALSE;
10015 1.1 christos r_type = R_PPC_NONE;
10016 1.1 christos howto = ppc_elf_howto_table[r_type];
10017 1.1 christos }
10018 1.3 christos else if (htab->plt_type != PLT_NEW)
10019 1.1 christos info->callbacks->einfo
10020 1.1 christos (_("%P: %H: %s relocation unsupported for bss-plt\n"),
10021 1.1 christos input_bfd, input_section, rel->r_offset,
10022 1.1 christos howto->name);
10023 1.1 christos break;
10024 1.1 christos }
10025 1.1 christos
10026 1.1 christos /* Do any further special processing. */
10027 1.1 christos switch (r_type)
10028 1.1 christos {
10029 1.1 christos default:
10030 1.7 christos break;
10031 1.1 christos
10032 1.1 christos case R_PPC_ADDR16_HA:
10033 1.1 christos case R_PPC_REL16_HA:
10034 1.1 christos case R_PPC_REL16DX_HA:
10035 1.1 christos case R_PPC_SECTOFF_HA:
10036 1.1 christos case R_PPC_TPREL16_HA:
10037 1.1 christos case R_PPC_DTPREL16_HA:
10038 1.1 christos case R_PPC_EMB_NADDR16_HA:
10039 1.1 christos case R_PPC_EMB_RELST_HA:
10040 1.1 christos /* It's just possible that this symbol is a weak symbol
10041 1.1 christos that's not actually defined anywhere. In that case,
10042 1.1 christos 'sec' would be NULL, and we should leave the symbol
10043 1.1 christos alone (it will be set to zero elsewhere in the link). */
10044 1.1 christos if (sec == NULL)
10045 1.1 christos break;
10046 1.1 christos /* Fall through. */
10047 1.1 christos
10048 1.1 christos case R_PPC_PLT16_HA:
10049 1.1 christos case R_PPC_GOT16_HA:
10050 1.1 christos case R_PPC_GOT_TLSGD16_HA:
10051 1.1 christos case R_PPC_GOT_TLSLD16_HA:
10052 1.1 christos case R_PPC_GOT_TPREL16_HA:
10053 1.1 christos case R_PPC_GOT_DTPREL16_HA:
10054 1.1 christos /* Add 0x10000 if sign bit in 0:15 is set.
10055 1.1 christos Bits 0:15 are not used. */
10056 1.1 christos addend += 0x8000;
10057 1.1 christos break;
10058 1.1 christos
10059 1.1 christos case R_PPC_ADDR16:
10060 1.1 christos case R_PPC_ADDR16_LO:
10061 1.1 christos case R_PPC_GOT16:
10062 1.1 christos case R_PPC_GOT16_LO:
10063 1.1 christos case R_PPC_SDAREL16:
10064 1.1 christos case R_PPC_SECTOFF:
10065 1.1 christos case R_PPC_SECTOFF_LO:
10066 1.1 christos case R_PPC_DTPREL16:
10067 1.1 christos case R_PPC_DTPREL16_LO:
10068 1.7 christos case R_PPC_TPREL16:
10069 1.3 christos case R_PPC_TPREL16_LO:
10070 1.1 christos case R_PPC_GOT_TLSGD16:
10071 1.1 christos case R_PPC_GOT_TLSGD16_LO:
10072 1.1 christos case R_PPC_GOT_TLSLD16:
10073 1.1 christos case R_PPC_GOT_TLSLD16_LO:
10074 1.1 christos case R_PPC_GOT_DTPREL16:
10075 1.1 christos case R_PPC_GOT_DTPREL16_LO:
10076 1.1 christos case R_PPC_GOT_TPREL16:
10077 1.3 christos case R_PPC_GOT_TPREL16_LO:
10078 1.3 christos {
10079 1.3 christos /* The 32-bit ABI lacks proper relocations to deal with
10080 1.1 christos certain 64-bit instructions. Prevent damage to bits
10081 1.1 christos that make up part of the insn opcode. */
10082 1.3 christos unsigned int insn, mask, lobit;
10083 1.1 christos
10084 1.7 christos insn = bfd_get_32 (input_bfd,
10085 1.7 christos contents + rel->r_offset - d_offset);
10086 1.1 christos mask = 0;
10087 1.1 christos if (is_insn_ds_form (insn))
10088 1.1 christos mask = 3;
10089 1.1 christos else if (is_insn_dq_form (insn))
10090 1.1 christos mask = 15;
10091 1.1 christos else
10092 1.1 christos break;
10093 1.1 christos relocation += addend;
10094 1.1 christos addend = insn & mask;
10095 1.1 christos lobit = mask & relocation;
10096 1.1 christos if (lobit != 0)
10097 1.1 christos {
10098 1.1 christos relocation ^= lobit;
10099 1.1 christos info->callbacks->einfo
10100 1.1 christos /* xgettext:c-format */
10101 1.1 christos (_("%H: error: %s against `%s' not a multiple of %u\n"),
10102 1.1 christos input_bfd, input_section, rel->r_offset,
10103 1.1 christos howto->name, sym_name, mask + 1);
10104 1.1 christos bfd_set_error (bfd_error_bad_value);
10105 1.1 christos ret = FALSE;
10106 1.1 christos }
10107 1.1 christos }
10108 1.1 christos break;
10109 1.1 christos }
10110 1.1 christos
10111 1.1 christos #ifdef DEBUG
10112 1.1 christos fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
10113 1.7 christos "offset = %ld, addend = %ld\n",
10114 1.7 christos howto->name,
10115 1.1 christos (int) r_type,
10116 1.1 christos sym_name,
10117 1.1 christos r_symndx,
10118 1.1 christos (long) rel->r_offset,
10119 1.1 christos (long) addend);
10120 1.1 christos #endif
10121 1.3 christos
10122 1.3 christos if (unresolved_reloc
10123 1.3 christos && !((input_section->flags & SEC_DEBUGGING) != 0
10124 1.3 christos && h->def_dynamic)
10125 1.3 christos && _bfd_elf_section_offset (output_bfd, info, input_section,
10126 1.3 christos rel->r_offset) != (bfd_vma) -1)
10127 1.3 christos {
10128 1.3 christos info->callbacks->einfo
10129 1.3 christos /* xgettext:c-format */
10130 1.3 christos (_("%H: unresolvable %s relocation against symbol `%s'\n"),
10131 1.3 christos input_bfd, input_section, rel->r_offset,
10132 1.3 christos howto->name,
10133 1.3 christos sym_name);
10134 1.3 christos ret = FALSE;
10135 1.3 christos }
10136 1.3 christos
10137 1.3 christos /* 16-bit fields in insns mostly have signed values, but a
10138 1.3 christos few insns have 16-bit unsigned values. Really, we should
10139 1.3 christos have different reloc types. */
10140 1.3 christos if (howto->complain_on_overflow != complain_overflow_dont
10141 1.3 christos && howto->dst_mask == 0xffff
10142 1.3 christos && (input_section->flags & SEC_CODE) != 0)
10143 1.3 christos {
10144 1.3 christos enum complain_overflow complain = complain_overflow_signed;
10145 1.3 christos
10146 1.3 christos if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
10147 1.3 christos {
10148 1.3 christos unsigned int insn;
10149 1.3 christos
10150 1.3 christos insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
10151 1.3 christos if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
10152 1.3 christos complain = complain_overflow_bitfield;
10153 1.3 christos else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
10154 1.3 christos || (insn & (0x3f << 26)) == 24u << 26 /* ori */
10155 1.3 christos || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
10156 1.3 christos complain = complain_overflow_unsigned;
10157 1.3 christos }
10158 1.3 christos if (howto->complain_on_overflow != complain)
10159 1.3 christos {
10160 1.3 christos alt_howto = *howto;
10161 1.3 christos alt_howto.complain_on_overflow = complain;
10162 1.3 christos howto = &alt_howto;
10163 1.3 christos }
10164 1.3 christos }
10165 1.3 christos
10166 1.3 christos if (r_type == R_PPC_REL16DX_HA)
10167 1.3 christos {
10168 1.3 christos /* Split field reloc isn't handled by _bfd_final_link_relocate. */
10169 1.3 christos if (rel->r_offset + 4 > input_section->size)
10170 1.3 christos r = bfd_reloc_outofrange;
10171 1.3 christos else
10172 1.3 christos {
10173 1.3 christos unsigned int insn;
10174 1.1 christos
10175 1.1 christos relocation += addend;
10176 1.1 christos relocation -= (rel->r_offset
10177 1.1 christos + input_section->output_offset
10178 1.1 christos + input_section->output_section->vma);
10179 1.3 christos relocation >>= 16;
10180 1.3 christos insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
10181 1.3 christos insn &= ~0x1fffc1;
10182 1.3 christos insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
10183 1.3 christos bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
10184 1.3 christos r = bfd_reloc_ok;
10185 1.3 christos }
10186 1.3 christos }
10187 1.6 christos else
10188 1.6 christos r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
10189 1.6 christos rel->r_offset, relocation, addend);
10190 1.1 christos
10191 1.1 christos if (r != bfd_reloc_ok)
10192 1.1 christos {
10193 1.1 christos if (r == bfd_reloc_overflow)
10194 1.7 christos {
10195 1.7 christos overflow:
10196 1.1 christos /* On code like "if (foo) foo();" don't report overflow
10197 1.1 christos on a branch to zero when foo is undefined. */
10198 1.1 christos if (!warned
10199 1.1 christos && !(h != NULL
10200 1.1 christos && (h->root.type == bfd_link_hash_undefweak
10201 1.3 christos || h->root.type == bfd_link_hash_undefined)
10202 1.3 christos && is_branch_reloc (r_type)))
10203 1.3 christos info->callbacks->reloc_overflow
10204 1.3 christos (info, (h ? &h->root : NULL), sym_name, howto->name,
10205 1.3 christos rel->r_addend, input_bfd, input_section, rel->r_offset);
10206 1.3 christos }
10207 1.3 christos else
10208 1.3 christos {
10209 1.3 christos info->callbacks->einfo
10210 1.3 christos /* xgettext:c-format */
10211 1.3 christos (_("%H: %s reloc against `%s': error %d\n"),
10212 1.3 christos input_bfd, input_section, rel->r_offset,
10213 1.3 christos howto->name, sym_name, (int) r);
10214 1.3 christos ret = FALSE;
10215 1.3 christos }
10216 1.3 christos }
10217 1.3 christos copy_reloc:
10218 1.3 christos if (wrel != rel)
10219 1.3 christos *wrel = *rel;
10220 1.3 christos }
10221 1.3 christos
10222 1.3 christos if (wrel != rel)
10223 1.3 christos {
10224 1.3 christos Elf_Internal_Shdr *rel_hdr;
10225 1.3 christos size_t deleted = rel - wrel;
10226 1.1 christos
10227 1.1 christos rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
10228 1.1 christos rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
10229 1.1 christos if (rel_hdr->sh_size == 0)
10230 1.1 christos {
10231 1.1 christos /* It is too late to remove an empty reloc section. Leave
10232 1.3 christos one NONE reloc.
10233 1.3 christos ??? What is wrong with an empty section??? */
10234 1.3 christos rel_hdr->sh_size = rel_hdr->sh_entsize;
10235 1.3 christos deleted -= 1;
10236 1.3 christos wrel++;
10237 1.3 christos }
10238 1.3 christos relend = wrel;
10239 1.3 christos rel_hdr = _bfd_elf_single_rel_hdr (input_section);
10240 1.3 christos rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
10241 1.3 christos input_section->reloc_count -= deleted;
10242 1.3 christos }
10243 1.3 christos
10244 1.3 christos #ifdef DEBUG
10245 1.3 christos fprintf (stderr, "\n");
10246 1.3 christos #endif
10247 1.3 christos
10248 1.3 christos if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
10249 1.3 christos && input_section->size != input_section->rawsize
10250 1.3 christos && (strcmp (input_section->output_section->name, ".init") == 0
10251 1.3 christos || strcmp (input_section->output_section->name, ".fini") == 0))
10252 1.3 christos {
10253 1.3 christos /* Branch around the trampolines. */
10254 1.3 christos unsigned int insn = B + input_section->size - input_section->rawsize;
10255 1.3 christos bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
10256 1.3 christos }
10257 1.3 christos
10258 1.3 christos if (htab->params->ppc476_workaround
10259 1.3 christos && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
10260 1.3 christos && (!bfd_link_relocatable (info)
10261 1.3 christos || (input_section->output_section->alignment_power
10262 1.3 christos >= htab->params->pagesize_p2)))
10263 1.3 christos {
10264 1.3 christos bfd_vma start_addr, end_addr, addr;
10265 1.3 christos bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10266 1.3 christos
10267 1.3 christos if (relax_info->workaround_size != 0)
10268 1.3 christos {
10269 1.3 christos bfd_byte *p;
10270 1.3 christos unsigned int n;
10271 1.3 christos bfd_byte fill[4];
10272 1.3 christos
10273 1.3 christos bfd_put_32 (input_bfd, BA, fill);
10274 1.3 christos p = contents + input_section->size - relax_info->workaround_size;
10275 1.3 christos n = relax_info->workaround_size >> 2;
10276 1.3 christos while (n--)
10277 1.3 christos {
10278 1.3 christos memcpy (p, fill, 4);
10279 1.3 christos p += 4;
10280 1.3 christos }
10281 1.3 christos }
10282 1.3 christos
10283 1.3 christos /* The idea is: Replace the last instruction on a page with a
10284 1.3 christos branch to a patch area. Put the insn there followed by a
10285 1.3 christos branch back to the next page. Complicated a little by
10286 1.3 christos needing to handle moved conditional branches, and by not
10287 1.3 christos wanting to touch data-in-text. */
10288 1.3 christos
10289 1.3 christos start_addr = (input_section->output_section->vma
10290 1.3 christos + input_section->output_offset);
10291 1.3 christos end_addr = (start_addr + input_section->size
10292 1.3 christos - relax_info->workaround_size);
10293 1.3 christos for (addr = ((start_addr & -pagesize) + pagesize - 4);
10294 1.3 christos addr < end_addr;
10295 1.3 christos addr += pagesize)
10296 1.3 christos {
10297 1.3 christos bfd_vma offset = addr - start_addr;
10298 1.3 christos Elf_Internal_Rela *lo, *hi;
10299 1.3 christos bfd_boolean is_data;
10300 1.3 christos bfd_vma patch_off, patch_addr;
10301 1.3 christos unsigned int insn;
10302 1.3 christos
10303 1.3 christos /* Do we have a data reloc at this offset? If so, leave
10304 1.3 christos the word alone. */
10305 1.3 christos is_data = FALSE;
10306 1.3 christos lo = relocs;
10307 1.3 christos hi = relend;
10308 1.3 christos rel = NULL;
10309 1.3 christos while (lo < hi)
10310 1.3 christos {
10311 1.3 christos rel = lo + (hi - lo) / 2;
10312 1.3 christos if (rel->r_offset < offset)
10313 1.3 christos lo = rel + 1;
10314 1.3 christos else if (rel->r_offset > offset + 3)
10315 1.3 christos hi = rel;
10316 1.3 christos else
10317 1.3 christos {
10318 1.3 christos switch (ELF32_R_TYPE (rel->r_info))
10319 1.3 christos {
10320 1.3 christos case R_PPC_ADDR32:
10321 1.3 christos case R_PPC_UADDR32:
10322 1.3 christos case R_PPC_REL32:
10323 1.3 christos case R_PPC_ADDR30:
10324 1.3 christos is_data = TRUE;
10325 1.3 christos break;
10326 1.3 christos default:
10327 1.3 christos break;
10328 1.3 christos }
10329 1.3 christos break;
10330 1.3 christos }
10331 1.3 christos }
10332 1.3 christos if (is_data)
10333 1.3 christos continue;
10334 1.3 christos
10335 1.3 christos /* Some instructions can be left alone too. Unconditional
10336 1.3 christos branches, except for bcctr with BO=0x14 (bctr, bctrl),
10337 1.3 christos avoid the icache failure.
10338 1.3 christos
10339 1.3 christos The problem occurs due to prefetch across a page boundary
10340 1.3 christos where stale instructions can be fetched from the next
10341 1.3 christos page, and the mechanism for flushing these bad
10342 1.3 christos instructions fails under certain circumstances. The
10343 1.3 christos unconditional branches:
10344 1.3 christos 1) Branch: b, bl, ba, bla,
10345 1.3 christos 2) Branch Conditional: bc, bca, bcl, bcla,
10346 1.3 christos 3) Branch Conditional to Link Register: bclr, bclrl,
10347 1.3 christos where (2) and (3) have BO=0x14 making them unconditional,
10348 1.3 christos prevent the bad prefetch because the prefetch itself is
10349 1.3 christos affected by these instructions. This happens even if the
10350 1.3 christos instruction is not executed.
10351 1.3 christos
10352 1.3 christos A bctr example:
10353 1.3 christos .
10354 1.3 christos . lis 9,new_page@ha
10355 1.3 christos . addi 9,9,new_page@l
10356 1.3 christos . mtctr 9
10357 1.3 christos . bctr
10358 1.3 christos . nop
10359 1.3 christos . nop
10360 1.3 christos . new_page:
10361 1.3 christos .
10362 1.3 christos The bctr is not predicted taken due to ctr not being
10363 1.7 christos ready, so prefetch continues on past the bctr into the
10364 1.7 christos new page which might have stale instructions. If they
10365 1.7 christos fail to be flushed, then they will be executed after the
10366 1.3 christos bctr executes. Either of the following modifications
10367 1.3 christos prevent the bad prefetch from happening in the first
10368 1.7 christos place:
10369 1.3 christos .
10370 1.3 christos . lis 9,new_page@ha lis 9,new_page@ha
10371 1.3 christos . addi 9,9,new_page@l addi 9,9,new_page@l
10372 1.3 christos . mtctr 9 mtctr 9
10373 1.3 christos . bctr bctr
10374 1.3 christos . nop b somewhere_else
10375 1.3 christos . b somewhere_else nop
10376 1.3 christos . new_page: new_page:
10377 1.3 christos . */
10378 1.3 christos insn = bfd_get_32 (input_bfd, contents + offset);
10379 1.3 christos if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
10380 1.3 christos || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
10381 1.3 christos && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
10382 1.3 christos || ((insn & (0x3f << 26)) == (19u << 26)
10383 1.3 christos && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
10384 1.3 christos && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
10385 1.3 christos continue;
10386 1.3 christos
10387 1.3 christos patch_addr = (start_addr + input_section->size
10388 1.3 christos - relax_info->workaround_size);
10389 1.3 christos patch_addr = (patch_addr + 15) & -16;
10390 1.3 christos patch_off = patch_addr - start_addr;
10391 1.3 christos bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
10392 1.3 christos
10393 1.3 christos if (rel != NULL
10394 1.3 christos && rel->r_offset >= offset
10395 1.3 christos && rel->r_offset < offset + 4)
10396 1.3 christos {
10397 1.3 christos asection *sreloc;
10398 1.3 christos
10399 1.3 christos /* If the insn we are patching had a reloc, adjust the
10400 1.3 christos reloc r_offset so that the reloc applies to the moved
10401 1.3 christos location. This matters for -r and --emit-relocs. */
10402 1.3 christos if (rel + 1 != relend)
10403 1.3 christos {
10404 1.3 christos Elf_Internal_Rela tmp = *rel;
10405 1.3 christos
10406 1.3 christos /* Keep the relocs sorted by r_offset. */
10407 1.3 christos memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
10408 1.3 christos relend[-1] = tmp;
10409 1.3 christos }
10410 1.3 christos relend[-1].r_offset += patch_off - offset;
10411 1.3 christos
10412 1.3 christos /* Adjust REL16 addends too. */
10413 1.3 christos switch (ELF32_R_TYPE (relend[-1].r_info))
10414 1.3 christos {
10415 1.3 christos case R_PPC_REL16:
10416 1.3 christos case R_PPC_REL16_LO:
10417 1.3 christos case R_PPC_REL16_HI:
10418 1.3 christos case R_PPC_REL16_HA:
10419 1.3 christos relend[-1].r_addend += patch_off - offset;
10420 1.3 christos break;
10421 1.3 christos default:
10422 1.3 christos break;
10423 1.3 christos }
10424 1.3 christos
10425 1.3 christos /* If we are building a PIE or shared library with
10426 1.3 christos non-PIC objects, perhaps we had a dynamic reloc too?
10427 1.3 christos If so, the dynamic reloc must move with the insn. */
10428 1.3 christos sreloc = elf_section_data (input_section)->sreloc;
10429 1.3 christos if (sreloc != NULL)
10430 1.3 christos {
10431 1.3 christos Elf32_External_Rela *slo, *shi, *srelend;
10432 1.3 christos bfd_vma soffset;
10433 1.3 christos
10434 1.3 christos slo = (Elf32_External_Rela *) sreloc->contents;
10435 1.3 christos shi = srelend = slo + sreloc->reloc_count;
10436 1.3 christos soffset = (offset + input_section->output_section->vma
10437 1.3 christos + input_section->output_offset);
10438 1.3 christos while (slo < shi)
10439 1.3 christos {
10440 1.3 christos Elf32_External_Rela *srel = slo + (shi - slo) / 2;
10441 1.3 christos bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
10442 1.3 christos &outrel);
10443 1.3 christos if (outrel.r_offset < soffset)
10444 1.3 christos slo = srel + 1;
10445 1.3 christos else if (outrel.r_offset > soffset + 3)
10446 1.3 christos shi = srel;
10447 1.3 christos else
10448 1.3 christos {
10449 1.3 christos if (srel + 1 != srelend)
10450 1.3 christos {
10451 1.3 christos memmove (srel, srel + 1,
10452 1.3 christos (srelend - (srel + 1)) * sizeof (*srel));
10453 1.3 christos srel = srelend - 1;
10454 1.3 christos }
10455 1.3 christos outrel.r_offset += patch_off - offset;
10456 1.3 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel,
10457 1.3 christos (bfd_byte *) srel);
10458 1.3 christos break;
10459 1.3 christos }
10460 1.3 christos }
10461 1.3 christos }
10462 1.3 christos }
10463 1.3 christos else
10464 1.3 christos rel = NULL;
10465 1.3 christos
10466 1.3 christos if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
10467 1.3 christos && (insn & 2) == 0 /* relative */)
10468 1.3 christos {
10469 1.3 christos bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
10470 1.3 christos
10471 1.3 christos delta += offset - patch_off;
10472 1.3 christos if (bfd_link_relocatable (info) && rel != NULL)
10473 1.3 christos delta = 0;
10474 1.3 christos if (!bfd_link_relocatable (info) && rel != NULL)
10475 1.3 christos {
10476 1.3 christos enum elf_ppc_reloc_type r_type;
10477 1.3 christos
10478 1.3 christos r_type = ELF32_R_TYPE (relend[-1].r_info);
10479 1.3 christos if (r_type == R_PPC_REL14_BRTAKEN)
10480 1.3 christos insn |= BRANCH_PREDICT_BIT;
10481 1.3 christos else if (r_type == R_PPC_REL14_BRNTAKEN)
10482 1.3 christos insn &= ~BRANCH_PREDICT_BIT;
10483 1.3 christos else
10484 1.3 christos BFD_ASSERT (r_type == R_PPC_REL14);
10485 1.3 christos
10486 1.3 christos if ((r_type == R_PPC_REL14_BRTAKEN
10487 1.3 christos || r_type == R_PPC_REL14_BRNTAKEN)
10488 1.3 christos && delta + 0x8000 < 0x10000
10489 1.3 christos && (bfd_signed_vma) delta < 0)
10490 1.3 christos insn ^= BRANCH_PREDICT_BIT;
10491 1.3 christos }
10492 1.3 christos if (delta + 0x8000 < 0x10000)
10493 1.3 christos {
10494 1.3 christos bfd_put_32 (input_bfd,
10495 1.3 christos (insn & ~0xfffc) | (delta & 0xfffc),
10496 1.3 christos contents + patch_off);
10497 1.3 christos patch_off += 4;
10498 1.3 christos bfd_put_32 (input_bfd,
10499 1.3 christos B | ((offset + 4 - patch_off) & 0x3fffffc),
10500 1.3 christos contents + patch_off);
10501 1.3 christos patch_off += 4;
10502 1.3 christos }
10503 1.3 christos else
10504 1.3 christos {
10505 1.3 christos if (rel != NULL)
10506 1.3 christos {
10507 1.3 christos unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
10508 1.3 christos
10509 1.3 christos relend[-1].r_offset += 8;
10510 1.3 christos relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
10511 1.3 christos }
10512 1.3 christos bfd_put_32 (input_bfd,
10513 1.3 christos (insn & ~0xfffc) | 8,
10514 1.3 christos contents + patch_off);
10515 1.3 christos patch_off += 4;
10516 1.3 christos bfd_put_32 (input_bfd,
10517 1.3 christos B | ((offset + 4 - patch_off) & 0x3fffffc),
10518 1.3 christos contents + patch_off);
10519 1.3 christos patch_off += 4;
10520 1.3 christos bfd_put_32 (input_bfd,
10521 1.3 christos B | ((delta - 8) & 0x3fffffc),
10522 1.3 christos contents + patch_off);
10523 1.3 christos patch_off += 4;
10524 1.1 christos }
10525 1.1 christos }
10526 1.1 christos else
10527 1.7 christos {
10528 1.1 christos bfd_put_32 (input_bfd, insn, contents + patch_off);
10529 1.1 christos patch_off += 4;
10530 1.7 christos bfd_put_32 (input_bfd,
10531 1.1 christos B | ((offset + 4 - patch_off) & 0x3fffffc),
10532 1.7 christos contents + patch_off);
10533 1.7 christos patch_off += 4;
10534 1.1 christos }
10535 1.1 christos BFD_ASSERT (patch_off <= input_section->size);
10536 1.1 christos relax_info->workaround_size = input_section->size - patch_off;
10537 1.1 christos }
10538 1.1 christos }
10539 1.1 christos
10540 1.1 christos return ret;
10541 1.1 christos }
10542 1.1 christos
10543 1.1 christos /* Write out the PLT relocs and entries for H. */
10545 1.1 christos
10546 1.7 christos static bfd_boolean
10547 1.7 christos write_global_sym_plt (struct elf_link_hash_entry *h, void *inf)
10548 1.1 christos {
10549 1.1 christos struct bfd_link_info *info = (struct bfd_link_info *) inf;
10550 1.1 christos struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10551 1.1 christos struct plt_entry *ent;
10552 1.1 christos bfd_boolean doneone;
10553 1.1 christos
10554 1.1 christos doneone = FALSE;
10555 1.1 christos for (ent = h->plt.plist; ent != NULL; ent = ent->next)
10556 1.1 christos if (ent->plt.offset != (bfd_vma) -1)
10557 1.1 christos {
10558 1.1 christos if (!doneone)
10559 1.1 christos {
10560 1.1 christos Elf_Internal_Rela rela;
10561 1.1 christos bfd_byte *loc;
10562 1.1 christos bfd_vma reloc_index;
10563 1.1 christos asection *plt = htab->elf.splt;
10564 1.1 christos asection *relplt = htab->elf.srelplt;
10565 1.1 christos
10566 1.1 christos if (htab->plt_type == PLT_NEW
10567 1.1 christos || !htab->elf.dynamic_sections_created
10568 1.1 christos || h->dynindx == -1)
10569 1.1 christos reloc_index = ent->plt.offset / 4;
10570 1.1 christos else
10571 1.1 christos {
10572 1.1 christos reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
10573 1.1 christos / htab->plt_slot_size);
10574 1.1 christos if (reloc_index > PLT_NUM_SINGLE_ENTRIES
10575 1.3 christos && htab->plt_type == PLT_OLD)
10576 1.1 christos reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
10577 1.1 christos }
10578 1.1 christos
10579 1.3 christos /* This symbol has an entry in the procedure linkage table.
10580 1.1 christos Set it up. */
10581 1.7 christos if (htab->plt_type == PLT_VXWORKS
10582 1.1 christos && htab->elf.dynamic_sections_created
10583 1.7 christos && h->dynindx != -1)
10584 1.7 christos {
10585 1.1 christos bfd_vma got_offset;
10586 1.7 christos const bfd_vma *plt_entry;
10587 1.1 christos
10588 1.1 christos /* The first three entries in .got.plt are reserved. */
10589 1.1 christos got_offset = (reloc_index + 3) * 4;
10590 1.1 christos
10591 1.1 christos /* Use the right PLT. */
10592 1.7 christos plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
10593 1.1 christos : ppc_elf_vxworks_plt_entry;
10594 1.7 christos
10595 1.7 christos /* Fill in the .plt on VxWorks. */
10596 1.1 christos if (bfd_link_pic (info))
10597 1.7 christos {
10598 1.1 christos bfd_put_32 (info->output_bfd,
10599 1.1 christos plt_entry[0] | PPC_HA (got_offset),
10600 1.7 christos plt->contents + ent->plt.offset + 0);
10601 1.7 christos bfd_put_32 (info->output_bfd,
10602 1.7 christos plt_entry[1] | PPC_LO (got_offset),
10603 1.7 christos plt->contents + ent->plt.offset + 4);
10604 1.1 christos }
10605 1.1 christos else
10606 1.1 christos {
10607 1.1 christos bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
10608 1.1 christos
10609 1.1 christos bfd_put_32 (info->output_bfd,
10610 1.1 christos plt_entry[0] | PPC_HA (got_loc),
10611 1.7 christos plt->contents + ent->plt.offset + 0);
10612 1.1 christos bfd_put_32 (info->output_bfd,
10613 1.7 christos plt_entry[1] | PPC_LO (got_loc),
10614 1.1 christos plt->contents + ent->plt.offset + 4);
10615 1.1 christos }
10616 1.1 christos
10617 1.1 christos bfd_put_32 (info->output_bfd, plt_entry[2],
10618 1.1 christos plt->contents + ent->plt.offset + 8);
10619 1.1 christos bfd_put_32 (info->output_bfd, plt_entry[3],
10620 1.7 christos plt->contents + ent->plt.offset + 12);
10621 1.1 christos
10622 1.1 christos /* This instruction is an immediate load. The value loaded is
10623 1.7 christos the byte offset of the R_PPC_JMP_SLOT relocation from the
10624 1.7 christos start of the .rela.plt section. The value is stored in the
10625 1.7 christos low-order 16 bits of the load instruction. */
10626 1.7 christos /* NOTE: It appears that this is now an index rather than a
10627 1.7 christos prescaled offset. */
10628 1.1 christos bfd_put_32 (info->output_bfd,
10629 1.1 christos plt_entry[4] | reloc_index,
10630 1.1 christos plt->contents + ent->plt.offset + 16);
10631 1.1 christos /* This instruction is a PC-relative branch whose target is
10632 1.7 christos the start of the PLT section. The address of this branch
10633 1.7 christos instruction is 20 bytes beyond the start of this PLT entry.
10634 1.7 christos The address is encoded in bits 6-29, inclusive. The value
10635 1.7 christos stored is right-shifted by two bits, permitting a 26-bit
10636 1.1 christos offset. */
10637 1.3 christos bfd_put_32 (info->output_bfd,
10638 1.1 christos (plt_entry[5]
10639 1.1 christos | (-(ent->plt.offset + 20) & 0x03fffffc)),
10640 1.1 christos plt->contents + ent->plt.offset + 20);
10641 1.1 christos bfd_put_32 (info->output_bfd, plt_entry[6],
10642 1.1 christos plt->contents + ent->plt.offset + 24);
10643 1.1 christos bfd_put_32 (info->output_bfd, plt_entry[7],
10644 1.1 christos plt->contents + ent->plt.offset + 28);
10645 1.1 christos
10646 1.7 christos /* Fill in the GOT entry corresponding to this PLT slot with
10647 1.7 christos the address immediately after the "bctr" instruction
10648 1.1 christos in this PLT entry. */
10649 1.1 christos bfd_put_32 (info->output_bfd, (plt->output_section->vma
10650 1.1 christos + plt->output_offset
10651 1.1 christos + ent->plt.offset + 16),
10652 1.7 christos htab->elf.sgotplt->contents + got_offset);
10653 1.1 christos
10654 1.1 christos if (!bfd_link_pic (info))
10655 1.1 christos {
10656 1.7 christos /* Fill in a couple of entries in .rela.plt.unloaded. */
10657 1.7 christos loc = htab->srelplt2->contents
10658 1.1 christos + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
10659 1.1 christos * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
10660 1.1 christos * sizeof (Elf32_External_Rela));
10661 1.1 christos
10662 1.7 christos /* Provide the @ha relocation for the first instruction. */
10663 1.1 christos rela.r_offset = (plt->output_section->vma
10664 1.1 christos + plt->output_offset
10665 1.1 christos + ent->plt.offset + 2);
10666 1.1 christos rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10667 1.7 christos R_PPC_ADDR16_HA);
10668 1.7 christos rela.r_addend = got_offset;
10669 1.1 christos bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc);
10670 1.1 christos loc += sizeof (Elf32_External_Rela);
10671 1.1 christos
10672 1.1 christos /* Provide the @l relocation for the second instruction. */
10673 1.7 christos rela.r_offset = (plt->output_section->vma
10674 1.1 christos + plt->output_offset
10675 1.1 christos + ent->plt.offset + 6);
10676 1.1 christos rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10677 1.1 christos R_PPC_ADDR16_LO);
10678 1.1 christos rela.r_addend = got_offset;
10679 1.1 christos bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc);
10680 1.1 christos loc += sizeof (Elf32_External_Rela);
10681 1.7 christos
10682 1.7 christos /* Provide a relocation for the GOT entry corresponding to this
10683 1.1 christos PLT slot. Point it at the middle of the .plt entry. */
10684 1.7 christos rela.r_offset = (htab->elf.sgotplt->output_section->vma
10685 1.1 christos + htab->elf.sgotplt->output_offset
10686 1.1 christos + got_offset);
10687 1.1 christos rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
10688 1.7 christos R_PPC_ADDR32);
10689 1.1 christos rela.r_addend = ent->plt.offset + 16;
10690 1.1 christos bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc);
10691 1.7 christos }
10692 1.7 christos
10693 1.7 christos /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10694 1.7 christos In particular, the offset for the relocation is not the
10695 1.7 christos address of the PLT entry for this function, as specified
10696 1.7 christos by the ABI. Instead, the offset is set to the address of
10697 1.7 christos the GOT slot for this function. See EABI 4.4.4.1. */
10698 1.7 christos rela.r_offset = (htab->elf.sgotplt->output_section->vma
10699 1.7 christos + htab->elf.sgotplt->output_offset
10700 1.7 christos + got_offset);
10701 1.7 christos rela.r_addend = 0;
10702 1.7 christos }
10703 1.7 christos else
10704 1.7 christos {
10705 1.7 christos rela.r_addend = 0;
10706 1.7 christos if (!htab->elf.dynamic_sections_created
10707 1.1 christos || h->dynindx == -1)
10708 1.7 christos {
10709 1.1 christos if (h->type == STT_GNU_IFUNC)
10710 1.7 christos {
10711 1.7 christos plt = htab->elf.iplt;
10712 1.1 christos relplt = htab->elf.irelplt;
10713 1.1 christos }
10714 1.1 christos else
10715 1.7 christos {
10716 1.7 christos plt = htab->pltlocal;
10717 1.7 christos relplt = bfd_link_pic (info) ? htab->relpltlocal : NULL;
10718 1.7 christos }
10719 1.7 christos if (h->def_regular
10720 1.7 christos && (h->root.type == bfd_link_hash_defined
10721 1.7 christos || h->root.type == bfd_link_hash_defweak))
10722 1.7 christos rela.r_addend = SYM_VAL (h);
10723 1.7 christos }
10724 1.7 christos
10725 1.7 christos if (relplt == NULL)
10726 1.7 christos {
10727 1.7 christos loc = plt->contents + ent->plt.offset;
10728 1.7 christos bfd_put_32 (info->output_bfd, rela.r_addend, loc);
10729 1.7 christos }
10730 1.7 christos else
10731 1.7 christos {
10732 1.7 christos rela.r_offset = (plt->output_section->vma
10733 1.7 christos + plt->output_offset
10734 1.1 christos + ent->plt.offset);
10735 1.1 christos
10736 1.1 christos if (htab->plt_type == PLT_OLD
10737 1.7 christos || !htab->elf.dynamic_sections_created
10738 1.1 christos || h->dynindx == -1)
10739 1.7 christos {
10740 1.7 christos /* We don't need to fill in the .plt. The ppc dynamic
10741 1.7 christos linker will fill it in. */
10742 1.7 christos }
10743 1.7 christos else
10744 1.7 christos {
10745 1.7 christos bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
10746 1.7 christos + htab->glink->output_section->vma
10747 1.7 christos + htab->glink->output_offset);
10748 1.7 christos bfd_put_32 (info->output_bfd, val,
10749 1.7 christos plt->contents + ent->plt.offset);
10750 1.7 christos }
10751 1.7 christos }
10752 1.1 christos }
10753 1.7 christos
10754 1.7 christos if (relplt != NULL)
10755 1.7 christos {
10756 1.7 christos /* Fill in the entry in the .rela.plt section. */
10757 1.7 christos if (!htab->elf.dynamic_sections_created
10758 1.1 christos || h->dynindx == -1)
10759 1.7 christos {
10760 1.1 christos if (h->type == STT_GNU_IFUNC)
10761 1.1 christos rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
10762 1.1 christos else
10763 1.1 christos rela.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
10764 1.1 christos loc = relplt->contents + (relplt->reloc_count++
10765 1.1 christos * sizeof (Elf32_External_Rela));
10766 1.1 christos htab->local_ifunc_resolver = 1;
10767 1.1 christos }
10768 1.1 christos else
10769 1.7 christos {
10770 1.7 christos rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
10771 1.1 christos loc = relplt->contents + (reloc_index
10772 1.1 christos * sizeof (Elf32_External_Rela));
10773 1.1 christos if (h->type == STT_GNU_IFUNC && is_static_defined (h))
10774 1.7 christos htab->maybe_local_ifunc_resolver = 1;
10775 1.7 christos }
10776 1.7 christos bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc);
10777 1.7 christos }
10778 1.1 christos doneone = TRUE;
10779 1.1 christos }
10780 1.7 christos
10781 1.7 christos if (htab->plt_type == PLT_NEW
10782 1.1 christos || !htab->elf.dynamic_sections_created
10783 1.3 christos || h->dynindx == -1)
10784 1.1 christos {
10785 1.1 christos unsigned char *p;
10786 1.1 christos asection *plt = htab->elf.splt;
10787 1.1 christos
10788 1.1 christos if (!htab->elf.dynamic_sections_created
10789 1.1 christos || h->dynindx == -1)
10790 1.7 christos {
10791 1.7 christos if (h->type == STT_GNU_IFUNC)
10792 1.7 christos plt = htab->elf.iplt;
10793 1.7 christos else
10794 1.7 christos break;
10795 1.7 christos }
10796 1.7 christos
10797 1.7 christos p = (unsigned char *) htab->glink->contents + ent->glink_offset;
10798 1.7 christos write_glink_stub (h, ent, plt, p, info);
10799 1.7 christos
10800 1.7 christos if (!bfd_link_pic (info))
10801 1.7 christos /* We only need one non-PIC glink stub. */
10802 1.7 christos break;
10803 1.7 christos }
10804 1.7 christos else
10805 1.7 christos break;
10806 1.7 christos }
10807 1.7 christos return TRUE;
10808 1.7 christos }
10809 1.7 christos
10810 1.7 christos /* Finish up PLT handling. */
10811 1.7 christos
10812 1.7 christos bfd_boolean
10813 1.7 christos ppc_finish_symbols (struct bfd_link_info *info)
10814 1.7 christos {
10815 1.7 christos struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10816 1.7 christos bfd *ibfd;
10817 1.7 christos
10818 1.7 christos if (!htab)
10819 1.7 christos return TRUE;
10820 1.7 christos
10821 1.7 christos elf_link_hash_traverse (&htab->elf, write_global_sym_plt, info);
10822 1.7 christos
10823 1.7 christos for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10824 1.7 christos {
10825 1.7 christos bfd_vma *local_got, *end_local_got;
10826 1.7 christos struct plt_entry **local_plt, **lplt, **end_local_plt;
10827 1.7 christos Elf_Internal_Shdr *symtab_hdr;
10828 1.7 christos bfd_size_type locsymcount;
10829 1.7 christos Elf_Internal_Sym *local_syms = NULL;
10830 1.7 christos struct plt_entry *ent;
10831 1.7 christos
10832 1.7 christos if (!is_ppc_elf (ibfd))
10833 1.7 christos continue;
10834 1.7 christos
10835 1.7 christos local_got = elf_local_got_offsets (ibfd);
10836 1.7 christos if (!local_got)
10837 1.7 christos continue;
10838 1.7 christos
10839 1.7 christos symtab_hdr = &elf_symtab_hdr (ibfd);
10840 1.7 christos locsymcount = symtab_hdr->sh_info;
10841 1.7 christos end_local_got = local_got + locsymcount;
10842 1.7 christos local_plt = (struct plt_entry **) end_local_got;
10843 1.7 christos end_local_plt = local_plt + locsymcount;
10844 1.7 christos for (lplt = local_plt; lplt < end_local_plt; ++lplt)
10845 1.7 christos for (ent = *lplt; ent != NULL; ent = ent->next)
10846 1.7 christos {
10847 1.7 christos if (ent->plt.offset != (bfd_vma) -1)
10848 1.7 christos {
10849 1.7 christos Elf_Internal_Sym *sym;
10850 1.7 christos asection *sym_sec;
10851 1.7 christos asection *plt, *relplt;
10852 1.7 christos bfd_byte *loc;
10853 1.7 christos bfd_vma val;
10854 1.7 christos Elf_Internal_Rela rela;
10855 1.7 christos
10856 1.7 christos if (!get_sym_h (NULL, &sym, &sym_sec, NULL, &local_syms,
10857 1.7 christos lplt - local_plt, ibfd))
10858 1.7 christos {
10859 1.7 christos if (local_syms != NULL
10860 1.7 christos && symtab_hdr->contents != (unsigned char *) local_syms)
10861 1.7 christos free (local_syms);
10862 1.7 christos return FALSE;
10863 1.7 christos }
10864 1.7 christos
10865 1.7 christos val = sym->st_value;
10866 1.7 christos if (sym_sec != NULL && sym_sec->output_section != NULL)
10867 1.7 christos val += sym_sec->output_offset + sym_sec->output_section->vma;
10868 1.7 christos
10869 1.7 christos if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
10870 1.7 christos {
10871 1.7 christos htab->local_ifunc_resolver = 1;
10872 1.7 christos plt = htab->elf.iplt;
10873 1.7 christos relplt = htab->elf.irelplt;
10874 1.7 christos rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
10875 1.7 christos }
10876 1.7 christos else
10877 1.7 christos {
10878 1.7 christos plt = htab->pltlocal;
10879 1.7 christos if (bfd_link_pic (info))
10880 1.7 christos {
10881 1.7 christos relplt = htab->relpltlocal;
10882 1.7 christos rela.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
10883 1.7 christos }
10884 1.7 christos else
10885 1.7 christos {
10886 1.7 christos loc = plt->contents + ent->plt.offset;
10887 1.7 christos bfd_put_32 (info->output_bfd, val, loc);
10888 1.7 christos continue;
10889 1.7 christos }
10890 1.7 christos }
10891 1.7 christos
10892 1.7 christos rela.r_offset = (ent->plt.offset
10893 1.7 christos + plt->output_offset
10894 1.7 christos + plt->output_section->vma);
10895 1.7 christos rela.r_addend = val;
10896 1.7 christos loc = relplt->contents + (relplt->reloc_count++
10897 1.7 christos * sizeof (Elf32_External_Rela));
10898 1.7 christos bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc);
10899 1.7 christos }
10900 1.7 christos if ((ent->glink_offset & 1) == 0)
10901 1.7 christos {
10902 1.7 christos unsigned char *p = ((unsigned char *) htab->glink->contents
10903 1.7 christos + ent->glink_offset);
10904 1.7 christos
10905 1.7 christos write_glink_stub (NULL, ent, htab->elf.iplt, p, info);
10906 1.7 christos ent->glink_offset |= 1;
10907 1.7 christos }
10908 1.7 christos }
10909 1.7 christos
10910 1.7 christos if (local_syms != NULL
10911 1.7 christos && symtab_hdr->contents != (unsigned char *) local_syms)
10912 1.7 christos {
10913 1.7 christos if (!info->keep_memory)
10914 1.7 christos free (local_syms);
10915 1.7 christos else
10916 1.7 christos symtab_hdr->contents = (unsigned char *) local_syms;
10917 1.7 christos }
10918 1.7 christos }
10919 1.7 christos return TRUE;
10920 1.7 christos }
10921 1.7 christos
10922 1.7 christos /* Finish up dynamic symbol handling. We set the contents of various
10923 1.7 christos dynamic sections here. */
10924 1.7 christos
10925 1.7 christos static bfd_boolean
10926 1.7 christos ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
10927 1.7 christos struct bfd_link_info *info,
10928 1.7 christos struct elf_link_hash_entry *h,
10929 1.7 christos Elf_Internal_Sym *sym)
10930 1.7 christos {
10931 1.7 christos struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10932 1.7 christos struct plt_entry *ent;
10933 1.7 christos
10934 1.7 christos #ifdef DEBUG
10935 1.7 christos fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
10936 1.7 christos h->root.root.string);
10937 1.7 christos #endif
10938 1.7 christos
10939 1.7 christos if (!h->def_regular
10940 1.7 christos || (h->type == STT_GNU_IFUNC && !bfd_link_pic (info)))
10941 1.7 christos for (ent = h->plt.plist; ent != NULL; ent = ent->next)
10942 1.7 christos if (ent->plt.offset != (bfd_vma) -1)
10943 1.7 christos {
10944 1.7 christos if (!h->def_regular)
10945 1.7 christos {
10946 1.7 christos /* Mark the symbol as undefined, rather than as
10947 1.7 christos defined in the .plt section. Leave the value if
10948 1.7 christos there were any relocations where pointer equality
10949 1.7 christos matters (this is a clue for the dynamic linker, to
10950 1.7 christos make function pointer comparisons work between an
10951 1.7 christos application and shared library), otherwise set it
10952 1.7 christos to zero. */
10953 1.7 christos sym->st_shndx = SHN_UNDEF;
10954 1.7 christos if (!h->pointer_equality_needed)
10955 1.7 christos sym->st_value = 0;
10956 1.7 christos else if (!h->ref_regular_nonweak)
10957 1.7 christos {
10958 1.7 christos /* This breaks function pointer comparisons, but
10959 1.7 christos that is better than breaking tests for a NULL
10960 1.7 christos function pointer. */
10961 1.7 christos sym->st_value = 0;
10962 1.7 christos }
10963 1.7 christos }
10964 1.7 christos else
10965 1.1 christos {
10966 1.1 christos /* Set the value of ifunc symbols in a non-pie
10967 1.1 christos executable to the glink entry. This is to avoid
10968 1.1 christos text relocations. We can't do this for ifunc in
10969 1.1 christos allocate_dynrelocs, as we do for normal dynamic
10970 1.1 christos function symbols with plt entries, because we need
10971 1.1 christos to keep the original value around for the ifunc
10972 1.1 christos relocation. */
10973 1.1 christos sym->st_shndx
10974 1.1 christos = (_bfd_elf_section_from_bfd_section
10975 1.1 christos (info->output_bfd, htab->glink->output_section));
10976 1.1 christos sym->st_value = (ent->glink_offset
10977 1.1 christos + htab->glink->output_offset
10978 1.1 christos + htab->glink->output_section->vma);
10979 1.1 christos }
10980 1.1 christos break;
10981 1.1 christos }
10982 1.7 christos
10983 1.7 christos if (h->needs_copy)
10984 1.1 christos {
10985 1.7 christos asection *s;
10986 1.1 christos Elf_Internal_Rela rela;
10987 1.1 christos bfd_byte *loc;
10988 1.1 christos
10989 1.1 christos /* This symbols needs a copy reloc. Set it up. */
10990 1.1 christos
10991 1.1 christos #ifdef DEBUG
10992 1.1 christos fprintf (stderr, ", copy");
10993 1.1 christos #endif
10994 1.1 christos
10995 1.1 christos BFD_ASSERT (h->dynindx != -1);
10996 1.1 christos
10997 1.1 christos if (ppc_elf_hash_entry (h)->has_sda_refs)
10998 1.1 christos s = htab->relsbss;
10999 1.1 christos else if (h->root.u.def.section == htab->elf.sdynrelro)
11000 1.1 christos s = htab->elf.sreldynrelro;
11001 1.1 christos else
11002 1.1 christos s = htab->elf.srelbss;
11003 1.3 christos BFD_ASSERT (s != NULL);
11004 1.3 christos
11005 1.3 christos rela.r_offset = SYM_VAL (h);
11006 1.1 christos rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
11007 1.3 christos rela.r_addend = 0;
11008 1.3 christos loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
11009 1.7 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
11010 1.3 christos }
11011 1.3 christos
11012 1.1 christos #ifdef DEBUG
11013 1.1 christos fprintf (stderr, "\n");
11014 1.1 christos #endif
11015 1.1 christos
11016 1.1 christos return TRUE;
11017 1.1 christos }
11018 1.1 christos
11019 1.1 christos static enum elf_reloc_type_class
11021 1.1 christos ppc_elf_reloc_type_class (const struct bfd_link_info *info,
11022 1.1 christos const asection *rel_sec,
11023 1.1 christos const Elf_Internal_Rela *rela)
11024 1.1 christos {
11025 1.1 christos struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
11026 1.1 christos
11027 1.1 christos if (rel_sec == htab->elf.irelplt)
11028 1.1 christos return reloc_class_ifunc;
11029 1.1 christos
11030 1.1 christos switch (ELF32_R_TYPE (rela->r_info))
11031 1.1 christos {
11032 1.1 christos case R_PPC_RELATIVE:
11033 1.1 christos return reloc_class_relative;
11034 1.1 christos case R_PPC_JMP_SLOT:
11035 1.1 christos return reloc_class_plt;
11036 1.1 christos case R_PPC_COPY:
11037 1.1 christos return reloc_class_copy;
11038 1.1 christos default:
11039 1.1 christos return reloc_class_normal;
11040 1.1 christos }
11041 1.1 christos }
11042 1.7 christos
11043 1.1 christos /* Finish up the dynamic sections. */
11045 1.1 christos
11046 1.1 christos static bfd_boolean
11047 1.1 christos ppc_elf_finish_dynamic_sections (bfd *output_bfd,
11048 1.1 christos struct bfd_link_info *info)
11049 1.1 christos {
11050 1.1 christos asection *sdyn;
11051 1.1 christos struct ppc_elf_link_hash_table *htab;
11052 1.1 christos bfd_vma got;
11053 1.7 christos bfd *dynobj;
11054 1.1 christos bfd_boolean ret = TRUE;
11055 1.1 christos
11056 1.1 christos #ifdef DEBUG
11057 1.1 christos fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
11058 1.1 christos #endif
11059 1.1 christos
11060 1.1 christos htab = ppc_elf_hash_table (info);
11061 1.1 christos dynobj = htab->elf.dynobj;
11062 1.1 christos sdyn = bfd_get_linker_section (dynobj, ".dynamic");
11063 1.1 christos
11064 1.1 christos got = 0;
11065 1.1 christos if (htab->elf.hgot != NULL)
11066 1.1 christos got = SYM_VAL (htab->elf.hgot);
11067 1.1 christos
11068 1.7 christos if (htab->elf.dynamic_sections_created)
11069 1.1 christos {
11070 1.7 christos Elf32_External_Dyn *dyncon, *dynconend;
11071 1.1 christos
11072 1.1 christos BFD_ASSERT (htab->elf.splt != NULL && sdyn != NULL);
11073 1.1 christos
11074 1.1 christos dyncon = (Elf32_External_Dyn *) sdyn->contents;
11075 1.7 christos dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
11076 1.1 christos for (; dyncon < dynconend; dyncon++)
11077 1.1 christos {
11078 1.1 christos Elf_Internal_Dyn dyn;
11079 1.7 christos asection *s;
11080 1.1 christos
11081 1.1 christos bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
11082 1.1 christos
11083 1.1 christos switch (dyn.d_tag)
11084 1.1 christos {
11085 1.1 christos case DT_PLTGOT:
11086 1.1 christos if (htab->is_vxworks)
11087 1.7 christos s = htab->elf.sgotplt;
11088 1.7 christos else
11089 1.7 christos s = htab->elf.splt;
11090 1.7 christos dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
11091 1.7 christos break;
11092 1.7 christos
11093 1.7 christos case DT_PLTRELSZ:
11094 1.7 christos dyn.d_un.d_val = htab->elf.srelplt->size;
11095 1.7 christos break;
11096 1.1 christos
11097 1.1 christos case DT_JMPREL:
11098 1.1 christos s = htab->elf.srelplt;
11099 1.1 christos dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
11100 1.1 christos break;
11101 1.1 christos
11102 1.1 christos case DT_PPC_GOT:
11103 1.1 christos dyn.d_un.d_ptr = got;
11104 1.1 christos break;
11105 1.1 christos
11106 1.1 christos case DT_TEXTREL:
11107 1.1 christos if (htab->local_ifunc_resolver)
11108 1.1 christos info->callbacks->einfo
11109 1.7 christos (_("%X%P: text relocations and GNU indirect "
11110 1.7 christos "functions will result in a segfault at runtime\n"));
11111 1.1 christos else if (htab->maybe_local_ifunc_resolver)
11112 1.7 christos info->callbacks->einfo
11113 1.7 christos (_("%P: warning: text relocations and GNU indirect "
11114 1.1 christos "functions may result in a segfault at runtime\n"));
11115 1.1 christos continue;
11116 1.1 christos
11117 1.1 christos default:
11118 1.1 christos if (htab->is_vxworks
11119 1.1 christos && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
11120 1.1 christos break;
11121 1.1 christos continue;
11122 1.1 christos }
11123 1.1 christos
11124 1.1 christos bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
11125 1.1 christos }
11126 1.1 christos }
11127 1.1 christos
11128 1.1 christos if (htab->elf.sgot != NULL
11129 1.1 christos && htab->elf.sgot->output_section != bfd_abs_section_ptr)
11130 1.1 christos {
11131 1.1 christos if (htab->elf.hgot->root.u.def.section == htab->elf.sgot
11132 1.1 christos || htab->elf.hgot->root.u.def.section == htab->elf.sgotplt)
11133 1.1 christos {
11134 1.1 christos unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
11135 1.1 christos
11136 1.1 christos p += htab->elf.hgot->root.u.def.value;
11137 1.1 christos if (htab->plt_type == PLT_OLD)
11138 1.7 christos {
11139 1.7 christos /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
11140 1.7 christos so that a function can easily find the address of
11141 1.7 christos _GLOBAL_OFFSET_TABLE_. */
11142 1.7 christos BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
11143 1.1 christos < htab->elf.hgot->root.u.def.section->size);
11144 1.1 christos bfd_put_32 (output_bfd, 0x4e800021, p - 4);
11145 1.1 christos }
11146 1.1 christos
11147 1.7 christos if (sdyn != NULL)
11148 1.1 christos {
11149 1.1 christos bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
11150 1.1 christos BFD_ASSERT (htab->elf.hgot->root.u.def.value
11151 1.7 christos < htab->elf.hgot->root.u.def.section->size);
11152 1.7 christos bfd_put_32 (output_bfd, val, p);
11153 1.7 christos }
11154 1.7 christos }
11155 1.1 christos else
11156 1.7 christos {
11157 1.1 christos /* xgettext:c-format */
11158 1.3 christos _bfd_error_handler (_("%s not defined in linker created %pA"),
11159 1.1 christos htab->elf.hgot->root.root.string,
11160 1.1 christos (htab->elf.sgotplt != NULL
11161 1.1 christos ? htab->elf.sgotplt : htab->elf.sgot));
11162 1.3 christos bfd_set_error (bfd_error_bad_value);
11163 1.1 christos ret = FALSE;
11164 1.1 christos }
11165 1.1 christos
11166 1.1 christos elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
11167 1.1 christos }
11168 1.1 christos
11169 1.1 christos /* Fill in the first entry in the VxWorks procedure linkage table. */
11170 1.1 christos if (htab->is_vxworks
11171 1.1 christos && htab->elf.splt != NULL
11172 1.1 christos && htab->elf.splt->size != 0
11173 1.1 christos && htab->elf.splt->output_section != bfd_abs_section_ptr)
11174 1.1 christos {
11175 1.1 christos asection *splt = htab->elf.splt;
11176 1.1 christos /* Use the right PLT. */
11177 1.1 christos const bfd_vma *plt_entry = (bfd_link_pic (info)
11178 1.1 christos ? ppc_elf_vxworks_pic_plt0_entry
11179 1.1 christos : ppc_elf_vxworks_plt0_entry);
11180 1.1 christos
11181 1.1 christos if (!bfd_link_pic (info))
11182 1.1 christos {
11183 1.3 christos bfd_vma got_value = SYM_VAL (htab->elf.hgot);
11184 1.1 christos
11185 1.1 christos bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
11186 1.1 christos splt->contents + 0);
11187 1.1 christos bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
11188 1.1 christos splt->contents + 4);
11189 1.1 christos }
11190 1.1 christos else
11191 1.7 christos {
11192 1.7 christos bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
11193 1.1 christos bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
11194 1.1 christos }
11195 1.1 christos bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
11196 1.1 christos bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
11197 1.1 christos bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
11198 1.1 christos bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
11199 1.1 christos bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
11200 1.7 christos bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
11201 1.7 christos
11202 1.1 christos if (! bfd_link_pic (info))
11203 1.1 christos {
11204 1.1 christos Elf_Internal_Rela rela;
11205 1.1 christos bfd_byte *loc;
11206 1.1 christos
11207 1.1 christos loc = htab->srelplt2->contents;
11208 1.1 christos
11209 1.1 christos /* Output the @ha relocation for the first instruction. */
11210 1.1 christos rela.r_offset = (htab->elf.splt->output_section->vma
11211 1.1 christos + htab->elf.splt->output_offset
11212 1.1 christos + 2);
11213 1.1 christos rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
11214 1.1 christos rela.r_addend = 0;
11215 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
11216 1.1 christos loc += sizeof (Elf32_External_Rela);
11217 1.1 christos
11218 1.1 christos /* Output the @l relocation for the second instruction. */
11219 1.1 christos rela.r_offset = (htab->elf.splt->output_section->vma
11220 1.1 christos + htab->elf.splt->output_offset
11221 1.1 christos + 6);
11222 1.1 christos rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
11223 1.1 christos rela.r_addend = 0;
11224 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
11225 1.1 christos loc += sizeof (Elf32_External_Rela);
11226 1.1 christos
11227 1.1 christos /* Fix up the remaining relocations. They may have the wrong
11228 1.1 christos symbol index for _G_O_T_ or _P_L_T_ depending on the order
11229 1.1 christos in which symbols were output. */
11230 1.1 christos while (loc < htab->srelplt2->contents + htab->srelplt2->size)
11231 1.1 christos {
11232 1.1 christos Elf_Internal_Rela rel;
11233 1.1 christos
11234 1.1 christos bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
11235 1.1 christos rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
11236 1.1 christos bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
11237 1.1 christos loc += sizeof (Elf32_External_Rela);
11238 1.1 christos
11239 1.1 christos bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
11240 1.1 christos rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
11241 1.1 christos bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
11242 1.1 christos loc += sizeof (Elf32_External_Rela);
11243 1.1 christos
11244 1.1 christos bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
11245 1.1 christos rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
11246 1.1 christos bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
11247 1.1 christos loc += sizeof (Elf32_External_Rela);
11248 1.1 christos }
11249 1.1 christos }
11250 1.1 christos }
11251 1.1 christos
11252 1.1 christos if (htab->glink != NULL
11253 1.1 christos && htab->glink->contents != NULL
11254 1.1 christos && htab->elf.dynamic_sections_created)
11255 1.1 christos {
11256 1.1 christos unsigned char *p;
11257 1.1 christos unsigned char *endp;
11258 1.1 christos bfd_vma res0;
11259 1.1 christos
11260 1.1 christos /*
11261 1.1 christos * PIC glink code is the following:
11262 1.1 christos *
11263 1.1 christos * # ith PLT code stub.
11264 1.1 christos * addis 11,30,(plt+(i-1)*4-got)@ha
11265 1.1 christos * lwz 11,(plt+(i-1)*4-got)@l(11)
11266 1.1 christos * mtctr 11
11267 1.1 christos * bctr
11268 1.7 christos *
11269 1.1 christos * # A table of branches, one for each plt entry.
11270 1.7 christos * # The idea is that the plt call stub loads ctr and r11 with these
11271 1.7 christos * # addresses, so (r11 - res_0) gives the plt index * 4.
11272 1.1 christos * res_0: b PLTresolve
11273 1.1 christos * res_1: b PLTresolve
11274 1.7 christos * .
11275 1.1 christos * # Some number of entries towards the end can be nops
11276 1.7 christos * res_n_m3: nop
11277 1.1 christos * res_n_m2: nop
11278 1.1 christos * res_n_m1:
11279 1.1 christos *
11280 1.1 christos * PLTresolve:
11281 1.1 christos * addis 11,11,(1f-res_0)@ha
11282 1.1 christos * mflr 0
11283 1.1 christos * bcl 20,31,1f
11284 1.1 christos * 1: addi 11,11,(1b-res_0)@l
11285 1.1 christos * mflr 12
11286 1.1 christos * mtlr 0
11287 1.1 christos * sub 11,11,12 # r11 = index * 4
11288 1.1 christos * addis 12,12,(got+4-1b)@ha
11289 1.1 christos * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
11290 1.7 christos * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
11291 1.7 christos * mtctr 0
11292 1.1 christos * add 0,11,11
11293 1.1 christos * add 11,0,11 # r11 = index * 12 = reloc offset.
11294 1.7 christos * bctr
11295 1.7 christos *
11296 1.1 christos * Non-PIC glink code is a little simpler.
11297 1.1 christos *
11298 1.1 christos * # ith PLT code stub.
11299 1.1 christos * lis 11,(plt+(i-1)*4)@ha
11300 1.1 christos * lwz 11,(plt+(i-1)*4)@l(11)
11301 1.1 christos * mtctr 11
11302 1.1 christos * bctr
11303 1.1 christos *
11304 1.1 christos * The branch table is the same, then comes
11305 1.3 christos *
11306 1.1 christos * PLTresolve:
11307 1.1 christos * lis 12,(got+4)@ha
11308 1.1 christos * addis 11,11,(-res_0)@ha
11309 1.1 christos * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
11310 1.1 christos * addi 11,11,(-res_0)@l # r11 = index * 4
11311 1.1 christos * mtctr 0
11312 1.1 christos * add 0,11,11
11313 1.1 christos * lwz 12,(got+8)@l(12) # got[2] contains the map address
11314 1.1 christos * add 11,0,11 # r11 = index * 12 = reloc offset.
11315 1.1 christos * bctr
11316 1.1 christos */
11317 1.1 christos
11318 1.1 christos /* Build the branch table, one for each plt entry (less one),
11319 1.1 christos and perhaps some padding. */
11320 1.3 christos p = htab->glink->contents;
11321 1.3 christos p += htab->glink_pltresolve;
11322 1.3 christos endp = htab->glink->contents;
11323 1.3 christos endp += htab->glink->size - GLINK_PLTRESOLVE;
11324 1.3 christos while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
11325 1.3 christos {
11326 1.3 christos bfd_put_32 (output_bfd, B + endp - p, p);
11327 1.3 christos p += 4;
11328 1.3 christos }
11329 1.3 christos while (p < endp)
11330 1.3 christos {
11331 1.3 christos bfd_put_32 (output_bfd, NOP, p);
11332 1.3 christos p += 4;
11333 1.3 christos }
11334 1.3 christos
11335 1.3 christos res0 = (htab->glink_pltresolve
11336 1.3 christos + htab->glink->output_section->vma
11337 1.3 christos + htab->glink->output_offset);
11338 1.3 christos
11339 1.3 christos if (htab->params->ppc476_workaround)
11340 1.3 christos {
11341 1.3 christos /* Ensure that a call stub at the end of a page doesn't
11342 1.3 christos result in prefetch over the end of the page into the
11343 1.3 christos glink branch table. */
11344 1.3 christos bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
11345 1.3 christos bfd_vma page_addr;
11346 1.3 christos bfd_vma glink_start = (htab->glink->output_section->vma
11347 1.3 christos + htab->glink->output_offset);
11348 1.3 christos
11349 1.3 christos for (page_addr = res0 & -pagesize;
11350 1.3 christos page_addr > glink_start;
11351 1.3 christos page_addr -= pagesize)
11352 1.3 christos {
11353 1.1 christos /* We have a plt call stub that may need fixing. */
11354 1.7 christos bfd_byte *loc;
11355 1.3 christos unsigned int insn;
11356 1.1 christos
11357 1.1 christos loc = htab->glink->contents + page_addr - 4 - glink_start;
11358 1.1 christos insn = bfd_get_32 (output_bfd, loc);
11359 1.1 christos if (insn == BCTR)
11360 1.1 christos {
11361 1.1 christos /* By alignment, we know that there must be at least
11362 1.1 christos one other call stub before this one. */
11363 1.7 christos insn = bfd_get_32 (output_bfd, loc - 16);
11364 1.7 christos if (insn == BCTR)
11365 1.7 christos bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
11366 1.7 christos else
11367 1.7 christos bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
11368 1.7 christos }
11369 1.7 christos }
11370 1.7 christos }
11371 1.7 christos
11372 1.7 christos /* Last comes the PLTresolve stub. */
11373 1.7 christos endp = p + GLINK_PLTRESOLVE;
11374 1.7 christos if (bfd_link_pic (info))
11375 1.7 christos {
11376 1.7 christos bfd_vma bcl;
11377 1.7 christos
11378 1.7 christos bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
11379 1.1 christos + htab->glink->output_section->vma
11380 1.1 christos + htab->glink->output_offset);
11381 1.7 christos
11382 1.7 christos bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (bcl - res0), p);
11383 1.7 christos p += 4;
11384 1.7 christos bfd_put_32 (output_bfd, MFLR_0, p);
11385 1.1 christos p += 4;
11386 1.1 christos bfd_put_32 (output_bfd, BCL_20_31, p);
11387 1.1 christos p += 4;
11388 1.7 christos bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (bcl - res0), p);
11389 1.7 christos p += 4;
11390 1.7 christos bfd_put_32 (output_bfd, MFLR_12, p);
11391 1.7 christos p += 4;
11392 1.1 christos bfd_put_32 (output_bfd, MTLR_0, p);
11393 1.7 christos p += 4;
11394 1.7 christos bfd_put_32 (output_bfd, SUB_11_11_12, p);
11395 1.7 christos p += 4;
11396 1.1 christos bfd_put_32 (output_bfd, ADDIS_12_12 + PPC_HA (got + 4 - bcl), p);
11397 1.1 christos p += 4;
11398 1.1 christos if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
11399 1.7 christos {
11400 1.7 christos bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4 - bcl), p);
11401 1.7 christos p += 4;
11402 1.7 christos bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8 - bcl), p);
11403 1.7 christos p += 4;
11404 1.7 christos }
11405 1.7 christos else
11406 1.7 christos {
11407 1.7 christos bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4 - bcl), p);
11408 1.7 christos p += 4;
11409 1.7 christos bfd_put_32 (output_bfd, LWZ_12_12 + 4, p);
11410 1.7 christos p += 4;
11411 1.7 christos }
11412 1.7 christos bfd_put_32 (output_bfd, MTCTR_0, p);
11413 1.7 christos p += 4;
11414 1.1 christos bfd_put_32 (output_bfd, ADD_0_11_11, p);
11415 1.7 christos }
11416 1.1 christos else
11417 1.7 christos {
11418 1.7 christos bfd_put_32 (output_bfd, LIS_12 + PPC_HA (got + 4), p);
11419 1.7 christos p += 4;
11420 1.7 christos bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (-res0), p);
11421 1.7 christos p += 4;
11422 1.7 christos if (PPC_HA (got + 4) == PPC_HA (got + 8))
11423 1.7 christos bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4), p);
11424 1.7 christos else
11425 1.7 christos bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4), p);
11426 1.7 christos p += 4;
11427 1.7 christos bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (-res0), p);
11428 1.7 christos p += 4;
11429 1.1 christos bfd_put_32 (output_bfd, MTCTR_0, p);
11430 1.7 christos p += 4;
11431 1.1 christos bfd_put_32 (output_bfd, ADD_0_11_11, p);
11432 1.1 christos p += 4;
11433 1.1 christos if (PPC_HA (got + 4) == PPC_HA (got + 8))
11434 1.1 christos bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8), p);
11435 1.1 christos else
11436 1.1 christos bfd_put_32 (output_bfd, LWZ_12_12 + 4, p);
11437 1.1 christos }
11438 1.1 christos p += 4;
11439 1.1 christos bfd_put_32 (output_bfd, ADD_11_0_11, p);
11440 1.1 christos p += 4;
11441 1.1 christos bfd_put_32 (output_bfd, BCTR, p);
11442 1.1 christos p += 4;
11443 1.1 christos while (p < endp)
11444 1.1 christos {
11445 1.1 christos bfd_put_32 (output_bfd,
11446 1.1 christos htab->params->ppc476_workaround ? BA : NOP, p);
11447 1.1 christos p += 4;
11448 1.1 christos }
11449 1.1 christos BFD_ASSERT (p == endp);
11450 1.1 christos }
11451 1.1 christos
11452 1.1 christos if (htab->glink_eh_frame != NULL
11453 1.1 christos && htab->glink_eh_frame->contents != NULL)
11454 1.1 christos {
11455 1.1 christos unsigned char *p = htab->glink_eh_frame->contents;
11456 1.1 christos bfd_vma val;
11457 1.1 christos
11458 1.1 christos p += sizeof (glink_eh_frame_cie);
11459 1.1 christos /* FDE length. */
11460 1.1 christos p += 4;
11461 1.1 christos /* CIE pointer. */
11462 1.3 christos p += 4;
11463 1.1 christos /* Offset to .glink. */
11464 1.3 christos val = (htab->glink->output_section->vma
11465 1.1 christos + htab->glink->output_offset);
11466 1.1 christos val -= (htab->glink_eh_frame->output_section->vma
11467 1.1 christos + htab->glink_eh_frame->output_offset);
11468 1.1 christos val -= p - htab->glink_eh_frame->contents;
11469 1.7 christos bfd_put_32 (htab->elf.dynobj, val, p);
11470 1.3 christos
11471 1.7 christos if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
11472 1.1 christos && !_bfd_elf_write_section_eh_frame (output_bfd, info,
11473 1.1 christos htab->glink_eh_frame,
11474 1.1 christos htab->glink_eh_frame->contents))
11475 1.1 christos return FALSE;
11476 1.1 christos }
11477 1.1 christos
11478 1.1 christos return ret;
11479 1.1 christos }
11480 1.1 christos
11481 1.1 christos #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
11483 1.7 christos #define TARGET_LITTLE_NAME "elf32-powerpcle"
11484 1.1 christos #define TARGET_BIG_SYM powerpc_elf32_vec
11485 1.1 christos #define TARGET_BIG_NAME "elf32-powerpc"
11486 1.1 christos #define ELF_ARCH bfd_arch_powerpc
11487 1.3 christos #define ELF_TARGET_ID PPC32_ELF_DATA
11488 1.1 christos #define ELF_MACHINE_CODE EM_PPC
11489 1.1 christos #define ELF_MAXPAGESIZE 0x10000
11490 1.1 christos #define ELF_COMMONPAGESIZE 0x1000
11491 1.1 christos #define ELF_RELROPAGESIZE ELF_MAXPAGESIZE
11492 1.1 christos #define elf_info_to_howto ppc_elf_info_to_howto
11493 1.1 christos
11494 1.1 christos #ifdef EM_CYGNUS_POWERPC
11495 1.1 christos #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
11496 1.1 christos #endif
11497 1.1 christos
11498 1.1 christos #ifdef EM_PPC_OLD
11499 1.1 christos #define ELF_MACHINE_ALT2 EM_PPC_OLD
11500 1.1 christos #endif
11501 1.1 christos
11502 1.1 christos #define elf_backend_plt_not_loaded 1
11503 1.1 christos #define elf_backend_want_dynrelro 1
11504 1.7 christos #define elf_backend_can_gc_sections 1
11505 1.1 christos #define elf_backend_can_refcount 1
11506 1.1 christos #define elf_backend_rela_normal 1
11507 1.1 christos #define elf_backend_caches_rawsize 1
11508 1.1 christos
11509 1.1 christos #define bfd_elf32_mkobject ppc_elf_mkobject
11510 1.1 christos #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
11511 1.1 christos #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
11512 1.1 christos #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
11513 1.1 christos #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
11514 1.7 christos #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
11515 1.1 christos #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
11516 1.1 christos #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
11517 1.1 christos
11518 1.1 christos #define elf_backend_object_p ppc_elf_object_p
11519 1.1 christos #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
11520 1.1 christos #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
11521 1.1 christos #define elf_backend_relocate_section ppc_elf_relocate_section
11522 1.1 christos #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
11523 1.1 christos #define elf_backend_check_relocs ppc_elf_check_relocs
11524 1.1 christos #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
11525 1.1 christos #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
11526 1.1 christos #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
11527 1.1 christos #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
11528 1.1 christos #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
11529 1.1 christos #define elf_backend_hash_symbol ppc_elf_hash_symbol
11530 1.1 christos #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
11531 1.1 christos #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
11532 1.1 christos #define elf_backend_fake_sections ppc_elf_fake_sections
11533 1.1 christos #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
11534 1.1 christos #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
11535 1.1 christos #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
11536 1.3 christos #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
11537 1.1 christos #define elf_backend_write_core_note ppc_elf_write_core_note
11538 1.1 christos #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
11539 1.1 christos #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
11540 1.1 christos #define elf_backend_final_write_processing ppc_elf_final_write_processing
11541 1.1 christos #define elf_backend_write_section ppc_elf_write_section
11542 1.1 christos #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
11543 1.1 christos #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
11544 1.1 christos #define elf_backend_action_discarded ppc_elf_action_discarded
11545 1.1 christos #define elf_backend_init_index_section _bfd_elf_init_1_index_section
11546 1.1 christos #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
11547 1.1 christos
11548 1.1 christos #include "elf32-target.h"
11549 1.1 christos
11550 1.1 christos /* FreeBSD Target */
11551 1.1 christos
11552 1.1 christos #undef TARGET_LITTLE_SYM
11553 1.1 christos #undef TARGET_LITTLE_NAME
11554 1.3 christos
11555 1.1 christos #undef TARGET_BIG_SYM
11556 1.1 christos #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
11557 1.1 christos #undef TARGET_BIG_NAME
11558 1.1 christos #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
11559 1.1 christos
11560 1.1 christos #undef ELF_OSABI
11561 1.1 christos #define ELF_OSABI ELFOSABI_FREEBSD
11562 1.7 christos
11563 1.1 christos #undef elf32_bed
11564 1.1 christos #define elf32_bed elf32_powerpc_fbsd_bed
11565 1.1 christos
11566 1.1 christos #include "elf32-target.h"
11567 1.1 christos
11568 1.1 christos /* VxWorks Target */
11569 1.1 christos
11570 1.1 christos #undef TARGET_LITTLE_SYM
11571 1.1 christos #undef TARGET_LITTLE_NAME
11572 1.1 christos
11573 1.1 christos #undef TARGET_BIG_SYM
11574 1.1 christos #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
11575 1.1 christos #undef TARGET_BIG_NAME
11576 1.1 christos #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
11577 1.1 christos
11578 1.1 christos #undef ELF_OSABI
11579 1.1 christos
11580 1.1 christos /* VxWorks uses the elf default section flags for .plt. */
11581 1.1 christos static const struct bfd_elf_special_section *
11582 1.1 christos ppc_elf_vxworks_get_sec_type_attr (bfd *abfd, asection *sec)
11583 1.1 christos {
11584 1.7 christos if (sec->name == NULL)
11585 1.1 christos return NULL;
11586 1.1 christos
11587 1.1 christos if (strcmp (sec->name, ".plt") == 0)
11588 1.1 christos return _bfd_elf_get_sec_type_attr (abfd, sec);
11589 1.1 christos
11590 1.1 christos return ppc_elf_get_sec_type_attr (abfd, sec);
11591 1.1 christos }
11592 1.1 christos
11593 1.1 christos /* Like ppc_elf_link_hash_table_create, but overrides
11594 1.1 christos appropriately for VxWorks. */
11595 1.1 christos static struct bfd_link_hash_table *
11596 1.1 christos ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
11597 1.1 christos {
11598 1.1 christos struct bfd_link_hash_table *ret;
11599 1.7 christos
11600 1.7 christos ret = ppc_elf_link_hash_table_create (abfd);
11601 1.1 christos if (ret)
11602 1.1 christos {
11603 1.1 christos struct ppc_elf_link_hash_table *htab
11604 1.7 christos = (struct ppc_elf_link_hash_table *)ret;
11605 1.7 christos htab->is_vxworks = 1;
11606 1.1 christos htab->plt_type = PLT_VXWORKS;
11607 1.1 christos htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
11608 1.7 christos htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
11609 1.1 christos htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
11610 1.1 christos }
11611 1.1 christos return ret;
11612 1.1 christos }
11613 1.1 christos
11614 1.7 christos /* Tweak magic VxWorks symbols as they are loaded. */
11615 1.7 christos static bfd_boolean
11616 1.1 christos ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
11617 1.1 christos struct bfd_link_info *info,
11618 1.1 christos Elf_Internal_Sym *sym,
11619 1.1 christos const char **namep,
11620 1.1 christos flagword *flagsp,
11621 1.1 christos asection **secp,
11622 1.1 christos bfd_vma *valp)
11623 1.1 christos {
11624 1.1 christos if (!elf_vxworks_add_symbol_hook (abfd, info, sym, namep, flagsp, secp,
11625 1.1 christos valp))
11626 1.1 christos return FALSE;
11627 1.1 christos
11628 1.1 christos return ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp);
11629 1.1 christos }
11630 1.1 christos
11631 1.1 christos static void
11632 1.7 christos ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
11633 1.7 christos {
11634 1.1 christos ppc_elf_final_write_processing (abfd, linker);
11635 1.1 christos elf_vxworks_final_write_processing (abfd, linker);
11636 1.1 christos }
11637 1.1 christos
11638 1.1 christos /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
11639 1.1 christos define it. */
11640 1.1 christos #undef elf_backend_want_plt_sym
11641 1.1 christos #define elf_backend_want_plt_sym 1
11642 1.1 christos #undef elf_backend_want_got_plt
11643 1.1 christos #define elf_backend_want_got_plt 1
11644 1.1 christos #undef elf_backend_got_symbol_offset
11645 1.1 christos #define elf_backend_got_symbol_offset 0
11646 1.1 christos #undef elf_backend_plt_not_loaded
11647 1.1 christos #define elf_backend_plt_not_loaded 0
11648 1.1 christos #undef elf_backend_plt_readonly
11649 1.1 christos #define elf_backend_plt_readonly 1
11650 1.1 christos #undef elf_backend_got_header_size
11651 1.1 christos #define elf_backend_got_header_size 12
11652 1.1 christos #undef elf_backend_dtrel_excludes_plt
11653 1.1 christos #define elf_backend_dtrel_excludes_plt 1
11654 1.1 christos
11655 1.1 christos #undef bfd_elf32_get_synthetic_symtab
11656 1.1 christos
11657 1.1 christos #undef bfd_elf32_bfd_link_hash_table_create
11658 1.1 christos #define bfd_elf32_bfd_link_hash_table_create \
11659 1.1 christos ppc_elf_vxworks_link_hash_table_create
11660 1.1 christos #undef elf_backend_add_symbol_hook
11661 #define elf_backend_add_symbol_hook \
11662 ppc_elf_vxworks_add_symbol_hook
11663 #undef elf_backend_link_output_symbol_hook
11664 #define elf_backend_link_output_symbol_hook \
11665 elf_vxworks_link_output_symbol_hook
11666 #undef elf_backend_final_write_processing
11667 #define elf_backend_final_write_processing \
11668 ppc_elf_vxworks_final_write_processing
11669 #undef elf_backend_get_sec_type_attr
11670 #define elf_backend_get_sec_type_attr \
11671 ppc_elf_vxworks_get_sec_type_attr
11672 #undef elf_backend_emit_relocs
11673 #define elf_backend_emit_relocs \
11674 elf_vxworks_emit_relocs
11675
11676 #undef elf32_bed
11677 #define elf32_bed ppc_elf_vxworks_bed
11678 #undef elf_backend_post_process_headers
11679
11680 #include "elf32-target.h"
11681