elf32-ppc.c revision 1.1.1.5 1 1.1 christos /* PowerPC-specific support for 32-bit ELF
2 1.1.1.5 christos Copyright (C) 1994-2017 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 1.1.1.5 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 1.1 christos #define GLINK_ENTRY_SIZE 4*4
72 1.1 christos #define TLS_GET_ADDR_GLINK_SIZE 12*4
73 1.1 christos
74 1.1 christos /* VxWorks uses its own plt layout, filled in by the static linker. */
75 1.1 christos
76 1.1 christos /* The standard VxWorks PLT entry. */
77 1.1 christos #define VXWORKS_PLT_ENTRY_SIZE 32
78 1.1 christos static const bfd_vma ppc_elf_vxworks_plt_entry
79 1.1 christos [VXWORKS_PLT_ENTRY_SIZE / 4] =
80 1.1 christos {
81 1.1 christos 0x3d800000, /* lis r12,0 */
82 1.1 christos 0x818c0000, /* lwz r12,0(r12) */
83 1.1 christos 0x7d8903a6, /* mtctr r12 */
84 1.1 christos 0x4e800420, /* bctr */
85 1.1 christos 0x39600000, /* li r11,0 */
86 1.1 christos 0x48000000, /* b 14 <.PLT0resolve+0x4> */
87 1.1 christos 0x60000000, /* nop */
88 1.1 christos 0x60000000, /* nop */
89 1.1 christos };
90 1.1 christos static const bfd_vma ppc_elf_vxworks_pic_plt_entry
91 1.1 christos [VXWORKS_PLT_ENTRY_SIZE / 4] =
92 1.1 christos {
93 1.1 christos 0x3d9e0000, /* addis r12,r30,0 */
94 1.1 christos 0x818c0000, /* lwz r12,0(r12) */
95 1.1 christos 0x7d8903a6, /* mtctr r12 */
96 1.1 christos 0x4e800420, /* bctr */
97 1.1 christos 0x39600000, /* li r11,0 */
98 1.1 christos 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
99 1.1 christos 0x60000000, /* nop */
100 1.1 christos 0x60000000, /* nop */
101 1.1 christos };
102 1.1 christos
103 1.1 christos /* The initial VxWorks PLT entry. */
104 1.1 christos #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
105 1.1 christos static const bfd_vma ppc_elf_vxworks_plt0_entry
106 1.1 christos [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
107 1.1 christos {
108 1.1 christos 0x3d800000, /* lis r12,0 */
109 1.1 christos 0x398c0000, /* addi r12,r12,0 */
110 1.1 christos 0x800c0008, /* lwz r0,8(r12) */
111 1.1 christos 0x7c0903a6, /* mtctr r0 */
112 1.1 christos 0x818c0004, /* lwz r12,4(r12) */
113 1.1 christos 0x4e800420, /* bctr */
114 1.1 christos 0x60000000, /* nop */
115 1.1 christos 0x60000000, /* nop */
116 1.1 christos };
117 1.1 christos static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
118 1.1 christos [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
119 1.1 christos {
120 1.1 christos 0x819e0008, /* lwz r12,8(r30) */
121 1.1 christos 0x7d8903a6, /* mtctr r12 */
122 1.1 christos 0x819e0004, /* lwz r12,4(r30) */
123 1.1 christos 0x4e800420, /* bctr */
124 1.1 christos 0x60000000, /* nop */
125 1.1 christos 0x60000000, /* nop */
126 1.1 christos 0x60000000, /* nop */
127 1.1 christos 0x60000000, /* nop */
128 1.1 christos };
129 1.1 christos
130 1.1 christos /* For executables, we have some additional relocations in
131 1.1 christos .rela.plt.unloaded, for the kernel loader. */
132 1.1 christos
133 1.1 christos /* The number of non-JMP_SLOT relocations per PLT0 slot. */
134 1.1 christos #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
135 1.1 christos /* The number of relocations in the PLTResolve slot. */
136 1.1 christos #define VXWORKS_PLTRESOLVE_RELOCS 2
137 1.1 christos /* The number of relocations in the PLTResolve slot when when creating
138 1.1 christos a shared library. */
139 1.1 christos #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
140 1.1 christos
141 1.1 christos /* Some instructions. */
142 1.1 christos #define ADDIS_11_11 0x3d6b0000
143 1.1 christos #define ADDIS_11_30 0x3d7e0000
144 1.1 christos #define ADDIS_12_12 0x3d8c0000
145 1.1 christos #define ADDI_11_11 0x396b0000
146 1.1 christos #define ADD_0_11_11 0x7c0b5a14
147 1.1 christos #define ADD_3_12_2 0x7c6c1214
148 1.1 christos #define ADD_11_0_11 0x7d605a14
149 1.1 christos #define B 0x48000000
150 1.1.1.2 christos #define BA 0x48000002
151 1.1 christos #define BCL_20_31 0x429f0005
152 1.1 christos #define BCTR 0x4e800420
153 1.1 christos #define BEQLR 0x4d820020
154 1.1 christos #define CMPWI_11_0 0x2c0b0000
155 1.1 christos #define LIS_11 0x3d600000
156 1.1 christos #define LIS_12 0x3d800000
157 1.1 christos #define LWZU_0_12 0x840c0000
158 1.1 christos #define LWZ_0_12 0x800c0000
159 1.1 christos #define LWZ_11_3 0x81630000
160 1.1 christos #define LWZ_11_11 0x816b0000
161 1.1 christos #define LWZ_11_30 0x817e0000
162 1.1 christos #define LWZ_12_3 0x81830000
163 1.1 christos #define LWZ_12_12 0x818c0000
164 1.1 christos #define MR_0_3 0x7c601b78
165 1.1 christos #define MR_3_0 0x7c030378
166 1.1 christos #define MFLR_0 0x7c0802a6
167 1.1 christos #define MFLR_12 0x7d8802a6
168 1.1 christos #define MTCTR_0 0x7c0903a6
169 1.1 christos #define MTCTR_11 0x7d6903a6
170 1.1 christos #define MTLR_0 0x7c0803a6
171 1.1 christos #define NOP 0x60000000
172 1.1 christos #define SUB_11_11_12 0x7d6c5850
173 1.1 christos
174 1.1 christos /* Offset of tp and dtp pointers from start of TLS block. */
175 1.1 christos #define TP_OFFSET 0x7000
176 1.1 christos #define DTP_OFFSET 0x8000
177 1.1 christos
178 1.1 christos /* The value of a defined global symbol. */
179 1.1 christos #define SYM_VAL(SYM) \
180 1.1 christos ((SYM)->root.u.def.section->output_section->vma \
181 1.1 christos + (SYM)->root.u.def.section->output_offset \
182 1.1 christos + (SYM)->root.u.def.value)
183 1.1 christos
184 1.1 christos static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
186 1.1 christos
187 1.1 christos static reloc_howto_type ppc_elf_howto_raw[] = {
188 1.1 christos /* This reloc does nothing. */
189 1.1 christos HOWTO (R_PPC_NONE, /* type */
190 1.1.1.3 christos 0, /* rightshift */
191 1.1.1.3 christos 3, /* size (0 = byte, 1 = short, 2 = long) */
192 1.1 christos 0, /* bitsize */
193 1.1 christos FALSE, /* pc_relative */
194 1.1.1.2 christos 0, /* bitpos */
195 1.1 christos complain_overflow_dont, /* complain_on_overflow */
196 1.1 christos bfd_elf_generic_reloc, /* special_function */
197 1.1 christos "R_PPC_NONE", /* name */
198 1.1 christos FALSE, /* partial_inplace */
199 1.1 christos 0, /* src_mask */
200 1.1 christos 0, /* dst_mask */
201 1.1 christos FALSE), /* pcrel_offset */
202 1.1 christos
203 1.1 christos /* A standard 32 bit relocation. */
204 1.1 christos HOWTO (R_PPC_ADDR32, /* type */
205 1.1 christos 0, /* rightshift */
206 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
207 1.1 christos 32, /* bitsize */
208 1.1 christos FALSE, /* pc_relative */
209 1.1.1.2 christos 0, /* bitpos */
210 1.1 christos complain_overflow_dont, /* complain_on_overflow */
211 1.1 christos bfd_elf_generic_reloc, /* special_function */
212 1.1 christos "R_PPC_ADDR32", /* name */
213 1.1 christos FALSE, /* partial_inplace */
214 1.1 christos 0, /* src_mask */
215 1.1 christos 0xffffffff, /* dst_mask */
216 1.1 christos FALSE), /* pcrel_offset */
217 1.1 christos
218 1.1 christos /* An absolute 26 bit branch; the lower two bits must be zero.
219 1.1 christos FIXME: we don't check that, we just clear them. */
220 1.1 christos HOWTO (R_PPC_ADDR24, /* type */
221 1.1 christos 0, /* rightshift */
222 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
223 1.1 christos 26, /* bitsize */
224 1.1 christos FALSE, /* pc_relative */
225 1.1.1.2 christos 0, /* bitpos */
226 1.1 christos complain_overflow_signed, /* complain_on_overflow */
227 1.1 christos bfd_elf_generic_reloc, /* special_function */
228 1.1 christos "R_PPC_ADDR24", /* name */
229 1.1 christos FALSE, /* partial_inplace */
230 1.1 christos 0, /* src_mask */
231 1.1 christos 0x3fffffc, /* dst_mask */
232 1.1 christos FALSE), /* pcrel_offset */
233 1.1 christos
234 1.1 christos /* A standard 16 bit relocation. */
235 1.1 christos HOWTO (R_PPC_ADDR16, /* type */
236 1.1 christos 0, /* rightshift */
237 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
238 1.1 christos 16, /* bitsize */
239 1.1 christos FALSE, /* pc_relative */
240 1.1 christos 0, /* bitpos */
241 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
242 1.1 christos bfd_elf_generic_reloc, /* special_function */
243 1.1 christos "R_PPC_ADDR16", /* name */
244 1.1 christos FALSE, /* partial_inplace */
245 1.1 christos 0, /* src_mask */
246 1.1 christos 0xffff, /* dst_mask */
247 1.1 christos FALSE), /* pcrel_offset */
248 1.1 christos
249 1.1 christos /* A 16 bit relocation without overflow. */
250 1.1 christos HOWTO (R_PPC_ADDR16_LO, /* type */
251 1.1 christos 0, /* rightshift */
252 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
253 1.1 christos 16, /* bitsize */
254 1.1 christos FALSE, /* pc_relative */
255 1.1 christos 0, /* bitpos */
256 1.1 christos complain_overflow_dont,/* complain_on_overflow */
257 1.1 christos bfd_elf_generic_reloc, /* special_function */
258 1.1 christos "R_PPC_ADDR16_LO", /* name */
259 1.1 christos FALSE, /* partial_inplace */
260 1.1 christos 0, /* src_mask */
261 1.1 christos 0xffff, /* dst_mask */
262 1.1 christos FALSE), /* pcrel_offset */
263 1.1 christos
264 1.1 christos /* The high order 16 bits of an address. */
265 1.1 christos HOWTO (R_PPC_ADDR16_HI, /* type */
266 1.1 christos 16, /* rightshift */
267 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
268 1.1 christos 16, /* bitsize */
269 1.1 christos FALSE, /* pc_relative */
270 1.1 christos 0, /* bitpos */
271 1.1 christos complain_overflow_dont, /* complain_on_overflow */
272 1.1 christos bfd_elf_generic_reloc, /* special_function */
273 1.1 christos "R_PPC_ADDR16_HI", /* name */
274 1.1 christos FALSE, /* partial_inplace */
275 1.1 christos 0, /* src_mask */
276 1.1 christos 0xffff, /* dst_mask */
277 1.1 christos FALSE), /* pcrel_offset */
278 1.1 christos
279 1.1 christos /* The high order 16 bits of an address, plus 1 if the contents of
280 1.1 christos the low 16 bits, treated as a signed number, is negative. */
281 1.1 christos HOWTO (R_PPC_ADDR16_HA, /* type */
282 1.1 christos 16, /* rightshift */
283 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
284 1.1 christos 16, /* bitsize */
285 1.1 christos FALSE, /* pc_relative */
286 1.1 christos 0, /* bitpos */
287 1.1 christos complain_overflow_dont, /* complain_on_overflow */
288 1.1 christos ppc_elf_addr16_ha_reloc, /* special_function */
289 1.1 christos "R_PPC_ADDR16_HA", /* name */
290 1.1 christos FALSE, /* partial_inplace */
291 1.1 christos 0, /* src_mask */
292 1.1 christos 0xffff, /* dst_mask */
293 1.1 christos FALSE), /* pcrel_offset */
294 1.1 christos
295 1.1 christos /* An absolute 16 bit branch; the lower two bits must be zero.
296 1.1 christos FIXME: we don't check that, we just clear them. */
297 1.1 christos HOWTO (R_PPC_ADDR14, /* type */
298 1.1 christos 0, /* rightshift */
299 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
300 1.1 christos 16, /* bitsize */
301 1.1 christos FALSE, /* pc_relative */
302 1.1.1.2 christos 0, /* bitpos */
303 1.1 christos complain_overflow_signed, /* complain_on_overflow */
304 1.1 christos bfd_elf_generic_reloc, /* special_function */
305 1.1 christos "R_PPC_ADDR14", /* name */
306 1.1 christos FALSE, /* partial_inplace */
307 1.1 christos 0, /* src_mask */
308 1.1 christos 0xfffc, /* dst_mask */
309 1.1 christos FALSE), /* pcrel_offset */
310 1.1 christos
311 1.1 christos /* An absolute 16 bit branch, for which bit 10 should be set to
312 1.1 christos indicate that the branch is expected to be taken. The lower two
313 1.1 christos bits must be zero. */
314 1.1 christos HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
315 1.1 christos 0, /* rightshift */
316 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
317 1.1 christos 16, /* bitsize */
318 1.1 christos FALSE, /* pc_relative */
319 1.1.1.2 christos 0, /* bitpos */
320 1.1 christos complain_overflow_signed, /* complain_on_overflow */
321 1.1 christos bfd_elf_generic_reloc, /* special_function */
322 1.1 christos "R_PPC_ADDR14_BRTAKEN",/* name */
323 1.1 christos FALSE, /* partial_inplace */
324 1.1 christos 0, /* src_mask */
325 1.1 christos 0xfffc, /* dst_mask */
326 1.1 christos FALSE), /* pcrel_offset */
327 1.1 christos
328 1.1 christos /* An absolute 16 bit branch, for which bit 10 should be set to
329 1.1 christos indicate that the branch is not expected to be taken. The lower
330 1.1 christos two bits must be zero. */
331 1.1 christos HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
332 1.1 christos 0, /* rightshift */
333 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
334 1.1 christos 16, /* bitsize */
335 1.1 christos FALSE, /* pc_relative */
336 1.1.1.2 christos 0, /* bitpos */
337 1.1 christos complain_overflow_signed, /* complain_on_overflow */
338 1.1 christos bfd_elf_generic_reloc, /* special_function */
339 1.1 christos "R_PPC_ADDR14_BRNTAKEN",/* name */
340 1.1 christos FALSE, /* partial_inplace */
341 1.1 christos 0, /* src_mask */
342 1.1 christos 0xfffc, /* dst_mask */
343 1.1 christos FALSE), /* pcrel_offset */
344 1.1 christos
345 1.1 christos /* A relative 26 bit branch; the lower two bits must be zero. */
346 1.1 christos HOWTO (R_PPC_REL24, /* type */
347 1.1 christos 0, /* rightshift */
348 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
349 1.1 christos 26, /* bitsize */
350 1.1 christos TRUE, /* pc_relative */
351 1.1 christos 0, /* bitpos */
352 1.1 christos complain_overflow_signed, /* complain_on_overflow */
353 1.1 christos bfd_elf_generic_reloc, /* special_function */
354 1.1 christos "R_PPC_REL24", /* name */
355 1.1 christos FALSE, /* partial_inplace */
356 1.1 christos 0, /* src_mask */
357 1.1 christos 0x3fffffc, /* dst_mask */
358 1.1 christos TRUE), /* pcrel_offset */
359 1.1 christos
360 1.1 christos /* A relative 16 bit branch; the lower two bits must be zero. */
361 1.1 christos HOWTO (R_PPC_REL14, /* type */
362 1.1 christos 0, /* rightshift */
363 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
364 1.1 christos 16, /* bitsize */
365 1.1 christos TRUE, /* pc_relative */
366 1.1 christos 0, /* bitpos */
367 1.1 christos complain_overflow_signed, /* complain_on_overflow */
368 1.1 christos bfd_elf_generic_reloc, /* special_function */
369 1.1 christos "R_PPC_REL14", /* name */
370 1.1 christos FALSE, /* partial_inplace */
371 1.1 christos 0, /* src_mask */
372 1.1 christos 0xfffc, /* dst_mask */
373 1.1 christos TRUE), /* pcrel_offset */
374 1.1 christos
375 1.1 christos /* A relative 16 bit branch. Bit 10 should be set to indicate that
376 1.1 christos the branch is expected to be taken. The lower two bits must be
377 1.1 christos zero. */
378 1.1 christos HOWTO (R_PPC_REL14_BRTAKEN, /* type */
379 1.1 christos 0, /* rightshift */
380 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
381 1.1 christos 16, /* bitsize */
382 1.1 christos TRUE, /* pc_relative */
383 1.1 christos 0, /* bitpos */
384 1.1 christos complain_overflow_signed, /* complain_on_overflow */
385 1.1 christos bfd_elf_generic_reloc, /* special_function */
386 1.1 christos "R_PPC_REL14_BRTAKEN", /* name */
387 1.1 christos FALSE, /* partial_inplace */
388 1.1 christos 0, /* src_mask */
389 1.1 christos 0xfffc, /* dst_mask */
390 1.1 christos TRUE), /* pcrel_offset */
391 1.1 christos
392 1.1 christos /* A relative 16 bit branch. Bit 10 should be set to indicate that
393 1.1 christos the branch is not expected to be taken. The lower two bits must
394 1.1 christos be zero. */
395 1.1 christos HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
396 1.1 christos 0, /* rightshift */
397 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
398 1.1 christos 16, /* bitsize */
399 1.1 christos TRUE, /* pc_relative */
400 1.1 christos 0, /* bitpos */
401 1.1 christos complain_overflow_signed, /* complain_on_overflow */
402 1.1 christos bfd_elf_generic_reloc, /* special_function */
403 1.1 christos "R_PPC_REL14_BRNTAKEN",/* name */
404 1.1 christos FALSE, /* partial_inplace */
405 1.1 christos 0, /* src_mask */
406 1.1 christos 0xfffc, /* dst_mask */
407 1.1 christos TRUE), /* pcrel_offset */
408 1.1 christos
409 1.1 christos /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
410 1.1 christos symbol. */
411 1.1 christos HOWTO (R_PPC_GOT16, /* type */
412 1.1 christos 0, /* rightshift */
413 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
414 1.1 christos 16, /* bitsize */
415 1.1 christos FALSE, /* pc_relative */
416 1.1 christos 0, /* bitpos */
417 1.1.1.4 christos complain_overflow_signed, /* complain_on_overflow */
418 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
419 1.1 christos "R_PPC_GOT16", /* name */
420 1.1 christos FALSE, /* partial_inplace */
421 1.1 christos 0, /* src_mask */
422 1.1 christos 0xffff, /* dst_mask */
423 1.1 christos FALSE), /* pcrel_offset */
424 1.1 christos
425 1.1 christos /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
426 1.1 christos the symbol. */
427 1.1 christos HOWTO (R_PPC_GOT16_LO, /* type */
428 1.1 christos 0, /* rightshift */
429 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
430 1.1 christos 16, /* bitsize */
431 1.1 christos FALSE, /* pc_relative */
432 1.1 christos 0, /* bitpos */
433 1.1.1.4 christos complain_overflow_dont, /* complain_on_overflow */
434 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
435 1.1 christos "R_PPC_GOT16_LO", /* name */
436 1.1 christos FALSE, /* partial_inplace */
437 1.1 christos 0, /* src_mask */
438 1.1 christos 0xffff, /* dst_mask */
439 1.1 christos FALSE), /* pcrel_offset */
440 1.1 christos
441 1.1 christos /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
442 1.1 christos the symbol. */
443 1.1 christos HOWTO (R_PPC_GOT16_HI, /* type */
444 1.1 christos 16, /* rightshift */
445 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
446 1.1 christos 16, /* bitsize */
447 1.1 christos FALSE, /* pc_relative */
448 1.1.1.2 christos 0, /* bitpos */
449 1.1.1.4 christos complain_overflow_dont, /* complain_on_overflow */
450 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
451 1.1 christos "R_PPC_GOT16_HI", /* name */
452 1.1 christos FALSE, /* partial_inplace */
453 1.1 christos 0, /* src_mask */
454 1.1 christos 0xffff, /* dst_mask */
455 1.1 christos FALSE), /* pcrel_offset */
456 1.1 christos
457 1.1 christos /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
458 1.1 christos the symbol. */
459 1.1 christos HOWTO (R_PPC_GOT16_HA, /* type */
460 1.1 christos 16, /* rightshift */
461 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
462 1.1 christos 16, /* bitsize */
463 1.1 christos FALSE, /* pc_relative */
464 1.1.1.2 christos 0, /* bitpos */
465 1.1.1.4 christos complain_overflow_dont, /* complain_on_overflow */
466 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
467 1.1 christos "R_PPC_GOT16_HA", /* name */
468 1.1 christos FALSE, /* partial_inplace */
469 1.1 christos 0, /* src_mask */
470 1.1 christos 0xffff, /* dst_mask */
471 1.1 christos FALSE), /* pcrel_offset */
472 1.1 christos
473 1.1 christos /* Like R_PPC_REL24, but referring to the procedure linkage table
474 1.1 christos entry for the symbol. */
475 1.1 christos HOWTO (R_PPC_PLTREL24, /* type */
476 1.1 christos 0, /* rightshift */
477 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
478 1.1 christos 26, /* bitsize */
479 1.1 christos TRUE, /* pc_relative */
480 1.1.1.4 christos 0, /* bitpos */
481 1.1.1.4 christos complain_overflow_signed, /* complain_on_overflow */
482 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
483 1.1 christos "R_PPC_PLTREL24", /* name */
484 1.1 christos FALSE, /* partial_inplace */
485 1.1 christos 0, /* src_mask */
486 1.1 christos 0x3fffffc, /* dst_mask */
487 1.1 christos TRUE), /* pcrel_offset */
488 1.1 christos
489 1.1 christos /* This is used only by the dynamic linker. The symbol should exist
490 1.1 christos both in the object being run and in some shared library. The
491 1.1 christos dynamic linker copies the data addressed by the symbol from the
492 1.1 christos shared library into the object, because the object being
493 1.1 christos run has to have the data at some particular address. */
494 1.1 christos HOWTO (R_PPC_COPY, /* type */
495 1.1 christos 0, /* rightshift */
496 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
497 1.1 christos 32, /* bitsize */
498 1.1 christos FALSE, /* pc_relative */
499 1.1.1.2 christos 0, /* bitpos */
500 1.1.1.4 christos complain_overflow_dont, /* complain_on_overflow */
501 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
502 1.1 christos "R_PPC_COPY", /* name */
503 1.1 christos FALSE, /* partial_inplace */
504 1.1 christos 0, /* src_mask */
505 1.1 christos 0, /* dst_mask */
506 1.1 christos FALSE), /* pcrel_offset */
507 1.1 christos
508 1.1 christos /* Like R_PPC_ADDR32, but used when setting global offset table
509 1.1 christos entries. */
510 1.1 christos HOWTO (R_PPC_GLOB_DAT, /* type */
511 1.1 christos 0, /* rightshift */
512 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
513 1.1 christos 32, /* bitsize */
514 1.1 christos FALSE, /* pc_relative */
515 1.1.1.2 christos 0, /* bitpos */
516 1.1.1.4 christos complain_overflow_dont, /* complain_on_overflow */
517 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
518 1.1 christos "R_PPC_GLOB_DAT", /* name */
519 1.1 christos FALSE, /* partial_inplace */
520 1.1 christos 0, /* src_mask */
521 1.1 christos 0xffffffff, /* dst_mask */
522 1.1 christos FALSE), /* pcrel_offset */
523 1.1 christos
524 1.1 christos /* Marks a procedure linkage table entry for a symbol. */
525 1.1 christos HOWTO (R_PPC_JMP_SLOT, /* type */
526 1.1 christos 0, /* rightshift */
527 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
528 1.1 christos 32, /* bitsize */
529 1.1 christos FALSE, /* pc_relative */
530 1.1.1.2 christos 0, /* bitpos */
531 1.1.1.4 christos complain_overflow_dont, /* complain_on_overflow */
532 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
533 1.1 christos "R_PPC_JMP_SLOT", /* name */
534 1.1 christos FALSE, /* partial_inplace */
535 1.1 christos 0, /* src_mask */
536 1.1 christos 0, /* dst_mask */
537 1.1 christos FALSE), /* pcrel_offset */
538 1.1 christos
539 1.1 christos /* Used only by the dynamic linker. When the object is run, this
540 1.1 christos longword is set to the load address of the object, plus the
541 1.1 christos addend. */
542 1.1 christos HOWTO (R_PPC_RELATIVE, /* type */
543 1.1 christos 0, /* rightshift */
544 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
545 1.1 christos 32, /* bitsize */
546 1.1 christos FALSE, /* pc_relative */
547 1.1.1.2 christos 0, /* bitpos */
548 1.1 christos complain_overflow_dont, /* complain_on_overflow */
549 1.1 christos bfd_elf_generic_reloc, /* special_function */
550 1.1 christos "R_PPC_RELATIVE", /* name */
551 1.1 christos FALSE, /* partial_inplace */
552 1.1 christos 0, /* src_mask */
553 1.1 christos 0xffffffff, /* dst_mask */
554 1.1 christos FALSE), /* pcrel_offset */
555 1.1 christos
556 1.1 christos /* Like R_PPC_REL24, but uses the value of the symbol within the
557 1.1 christos object rather than the final value. Normally used for
558 1.1 christos _GLOBAL_OFFSET_TABLE_. */
559 1.1 christos HOWTO (R_PPC_LOCAL24PC, /* type */
560 1.1 christos 0, /* rightshift */
561 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
562 1.1 christos 26, /* bitsize */
563 1.1 christos TRUE, /* pc_relative */
564 1.1 christos 0, /* bitpos */
565 1.1 christos complain_overflow_signed, /* complain_on_overflow */
566 1.1 christos bfd_elf_generic_reloc, /* special_function */
567 1.1 christos "R_PPC_LOCAL24PC", /* name */
568 1.1 christos FALSE, /* partial_inplace */
569 1.1 christos 0, /* src_mask */
570 1.1 christos 0x3fffffc, /* dst_mask */
571 1.1 christos TRUE), /* pcrel_offset */
572 1.1 christos
573 1.1 christos /* Like R_PPC_ADDR32, but may be unaligned. */
574 1.1 christos HOWTO (R_PPC_UADDR32, /* type */
575 1.1 christos 0, /* rightshift */
576 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
577 1.1 christos 32, /* bitsize */
578 1.1 christos FALSE, /* pc_relative */
579 1.1.1.2 christos 0, /* bitpos */
580 1.1 christos complain_overflow_dont, /* complain_on_overflow */
581 1.1 christos bfd_elf_generic_reloc, /* special_function */
582 1.1 christos "R_PPC_UADDR32", /* name */
583 1.1 christos FALSE, /* partial_inplace */
584 1.1 christos 0, /* src_mask */
585 1.1 christos 0xffffffff, /* dst_mask */
586 1.1 christos FALSE), /* pcrel_offset */
587 1.1 christos
588 1.1 christos /* Like R_PPC_ADDR16, but may be unaligned. */
589 1.1 christos HOWTO (R_PPC_UADDR16, /* type */
590 1.1 christos 0, /* rightshift */
591 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
592 1.1 christos 16, /* bitsize */
593 1.1 christos FALSE, /* pc_relative */
594 1.1 christos 0, /* bitpos */
595 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
596 1.1 christos bfd_elf_generic_reloc, /* special_function */
597 1.1 christos "R_PPC_UADDR16", /* name */
598 1.1 christos FALSE, /* partial_inplace */
599 1.1 christos 0, /* src_mask */
600 1.1 christos 0xffff, /* dst_mask */
601 1.1 christos FALSE), /* pcrel_offset */
602 1.1 christos
603 1.1 christos /* 32-bit PC relative */
604 1.1 christos HOWTO (R_PPC_REL32, /* type */
605 1.1 christos 0, /* rightshift */
606 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
607 1.1 christos 32, /* bitsize */
608 1.1 christos TRUE, /* pc_relative */
609 1.1.1.2 christos 0, /* bitpos */
610 1.1 christos complain_overflow_dont, /* complain_on_overflow */
611 1.1 christos bfd_elf_generic_reloc, /* special_function */
612 1.1 christos "R_PPC_REL32", /* name */
613 1.1 christos FALSE, /* partial_inplace */
614 1.1 christos 0, /* src_mask */
615 1.1 christos 0xffffffff, /* dst_mask */
616 1.1 christos TRUE), /* pcrel_offset */
617 1.1 christos
618 1.1 christos /* 32-bit relocation to the symbol's procedure linkage table.
619 1.1 christos FIXME: not supported. */
620 1.1 christos HOWTO (R_PPC_PLT32, /* type */
621 1.1 christos 0, /* rightshift */
622 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
623 1.1 christos 32, /* bitsize */
624 1.1 christos FALSE, /* pc_relative */
625 1.1.1.2 christos 0, /* bitpos */
626 1.1.1.4 christos complain_overflow_dont, /* complain_on_overflow */
627 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
628 1.1 christos "R_PPC_PLT32", /* name */
629 1.1 christos FALSE, /* partial_inplace */
630 1.1 christos 0, /* src_mask */
631 1.1 christos 0, /* dst_mask */
632 1.1 christos FALSE), /* pcrel_offset */
633 1.1 christos
634 1.1 christos /* 32-bit PC relative relocation to the symbol's procedure linkage table.
635 1.1 christos FIXME: not supported. */
636 1.1 christos HOWTO (R_PPC_PLTREL32, /* type */
637 1.1 christos 0, /* rightshift */
638 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
639 1.1 christos 32, /* bitsize */
640 1.1 christos TRUE, /* pc_relative */
641 1.1.1.2 christos 0, /* bitpos */
642 1.1.1.4 christos complain_overflow_dont, /* complain_on_overflow */
643 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
644 1.1 christos "R_PPC_PLTREL32", /* name */
645 1.1 christos FALSE, /* partial_inplace */
646 1.1 christos 0, /* src_mask */
647 1.1 christos 0, /* dst_mask */
648 1.1 christos TRUE), /* pcrel_offset */
649 1.1 christos
650 1.1 christos /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
651 1.1 christos the symbol. */
652 1.1 christos HOWTO (R_PPC_PLT16_LO, /* type */
653 1.1 christos 0, /* rightshift */
654 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
655 1.1 christos 16, /* bitsize */
656 1.1 christos FALSE, /* pc_relative */
657 1.1 christos 0, /* bitpos */
658 1.1.1.4 christos complain_overflow_dont, /* complain_on_overflow */
659 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
660 1.1 christos "R_PPC_PLT16_LO", /* name */
661 1.1 christos FALSE, /* partial_inplace */
662 1.1 christos 0, /* src_mask */
663 1.1 christos 0xffff, /* dst_mask */
664 1.1 christos FALSE), /* pcrel_offset */
665 1.1 christos
666 1.1 christos /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
667 1.1 christos the symbol. */
668 1.1 christos HOWTO (R_PPC_PLT16_HI, /* type */
669 1.1 christos 16, /* rightshift */
670 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
671 1.1 christos 16, /* bitsize */
672 1.1 christos FALSE, /* pc_relative */
673 1.1.1.2 christos 0, /* bitpos */
674 1.1.1.4 christos complain_overflow_dont, /* complain_on_overflow */
675 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
676 1.1 christos "R_PPC_PLT16_HI", /* name */
677 1.1 christos FALSE, /* partial_inplace */
678 1.1 christos 0, /* src_mask */
679 1.1 christos 0xffff, /* dst_mask */
680 1.1 christos FALSE), /* pcrel_offset */
681 1.1 christos
682 1.1 christos /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
683 1.1 christos the symbol. */
684 1.1 christos HOWTO (R_PPC_PLT16_HA, /* type */
685 1.1 christos 16, /* rightshift */
686 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
687 1.1 christos 16, /* bitsize */
688 1.1 christos FALSE, /* pc_relative */
689 1.1.1.2 christos 0, /* bitpos */
690 1.1.1.4 christos complain_overflow_dont, /* complain_on_overflow */
691 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
692 1.1 christos "R_PPC_PLT16_HA", /* name */
693 1.1 christos FALSE, /* partial_inplace */
694 1.1 christos 0, /* src_mask */
695 1.1 christos 0xffff, /* dst_mask */
696 1.1 christos FALSE), /* pcrel_offset */
697 1.1 christos
698 1.1 christos /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
699 1.1 christos small data items. */
700 1.1 christos HOWTO (R_PPC_SDAREL16, /* type */
701 1.1 christos 0, /* rightshift */
702 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
703 1.1 christos 16, /* bitsize */
704 1.1 christos FALSE, /* pc_relative */
705 1.1 christos 0, /* bitpos */
706 1.1.1.4 christos complain_overflow_signed, /* complain_on_overflow */
707 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
708 1.1 christos "R_PPC_SDAREL16", /* name */
709 1.1 christos FALSE, /* partial_inplace */
710 1.1 christos 0, /* src_mask */
711 1.1 christos 0xffff, /* dst_mask */
712 1.1 christos FALSE), /* pcrel_offset */
713 1.1 christos
714 1.1 christos /* 16-bit section relative relocation. */
715 1.1 christos HOWTO (R_PPC_SECTOFF, /* type */
716 1.1 christos 0, /* rightshift */
717 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
718 1.1 christos 16, /* bitsize */
719 1.1 christos FALSE, /* pc_relative */
720 1.1.1.2 christos 0, /* bitpos */
721 1.1.1.4 christos complain_overflow_signed, /* complain_on_overflow */
722 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
723 1.1 christos "R_PPC_SECTOFF", /* name */
724 1.1 christos FALSE, /* partial_inplace */
725 1.1 christos 0, /* src_mask */
726 1.1 christos 0xffff, /* dst_mask */
727 1.1 christos FALSE), /* pcrel_offset */
728 1.1 christos
729 1.1 christos /* 16-bit lower half section relative relocation. */
730 1.1 christos HOWTO (R_PPC_SECTOFF_LO, /* type */
731 1.1 christos 0, /* rightshift */
732 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
733 1.1 christos 16, /* bitsize */
734 1.1 christos FALSE, /* pc_relative */
735 1.1 christos 0, /* bitpos */
736 1.1.1.4 christos complain_overflow_dont, /* complain_on_overflow */
737 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
738 1.1 christos "R_PPC_SECTOFF_LO", /* name */
739 1.1 christos FALSE, /* partial_inplace */
740 1.1 christos 0, /* src_mask */
741 1.1 christos 0xffff, /* dst_mask */
742 1.1 christos FALSE), /* pcrel_offset */
743 1.1 christos
744 1.1 christos /* 16-bit upper half section relative relocation. */
745 1.1 christos HOWTO (R_PPC_SECTOFF_HI, /* type */
746 1.1 christos 16, /* rightshift */
747 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
748 1.1 christos 16, /* bitsize */
749 1.1 christos FALSE, /* pc_relative */
750 1.1.1.2 christos 0, /* bitpos */
751 1.1.1.4 christos complain_overflow_dont, /* complain_on_overflow */
752 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
753 1.1 christos "R_PPC_SECTOFF_HI", /* name */
754 1.1 christos FALSE, /* partial_inplace */
755 1.1 christos 0, /* src_mask */
756 1.1 christos 0xffff, /* dst_mask */
757 1.1 christos FALSE), /* pcrel_offset */
758 1.1 christos
759 1.1 christos /* 16-bit upper half adjusted section relative relocation. */
760 1.1 christos HOWTO (R_PPC_SECTOFF_HA, /* type */
761 1.1 christos 16, /* rightshift */
762 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
763 1.1 christos 16, /* bitsize */
764 1.1 christos FALSE, /* pc_relative */
765 1.1.1.2 christos 0, /* bitpos */
766 1.1.1.4 christos complain_overflow_dont, /* complain_on_overflow */
767 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
768 1.1 christos "R_PPC_SECTOFF_HA", /* name */
769 1.1 christos FALSE, /* partial_inplace */
770 1.1 christos 0, /* src_mask */
771 1.1 christos 0xffff, /* dst_mask */
772 1.1 christos FALSE), /* pcrel_offset */
773 1.1 christos
774 1.1 christos /* Marker relocs for TLS. */
775 1.1 christos HOWTO (R_PPC_TLS,
776 1.1 christos 0, /* rightshift */
777 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
778 1.1 christos 32, /* bitsize */
779 1.1 christos FALSE, /* pc_relative */
780 1.1 christos 0, /* bitpos */
781 1.1 christos complain_overflow_dont, /* complain_on_overflow */
782 1.1 christos bfd_elf_generic_reloc, /* special_function */
783 1.1 christos "R_PPC_TLS", /* name */
784 1.1 christos FALSE, /* partial_inplace */
785 1.1 christos 0, /* src_mask */
786 1.1 christos 0, /* dst_mask */
787 1.1 christos FALSE), /* pcrel_offset */
788 1.1 christos
789 1.1 christos HOWTO (R_PPC_TLSGD,
790 1.1 christos 0, /* rightshift */
791 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
792 1.1 christos 32, /* bitsize */
793 1.1 christos FALSE, /* pc_relative */
794 1.1 christos 0, /* bitpos */
795 1.1 christos complain_overflow_dont, /* complain_on_overflow */
796 1.1 christos bfd_elf_generic_reloc, /* special_function */
797 1.1 christos "R_PPC_TLSGD", /* name */
798 1.1 christos FALSE, /* partial_inplace */
799 1.1 christos 0, /* src_mask */
800 1.1 christos 0, /* dst_mask */
801 1.1 christos FALSE), /* pcrel_offset */
802 1.1 christos
803 1.1 christos HOWTO (R_PPC_TLSLD,
804 1.1 christos 0, /* rightshift */
805 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
806 1.1 christos 32, /* bitsize */
807 1.1 christos FALSE, /* pc_relative */
808 1.1 christos 0, /* bitpos */
809 1.1 christos complain_overflow_dont, /* complain_on_overflow */
810 1.1 christos bfd_elf_generic_reloc, /* special_function */
811 1.1 christos "R_PPC_TLSLD", /* name */
812 1.1 christos FALSE, /* partial_inplace */
813 1.1 christos 0, /* src_mask */
814 1.1 christos 0, /* dst_mask */
815 1.1 christos FALSE), /* pcrel_offset */
816 1.1 christos
817 1.1 christos /* Computes the load module index of the load module that contains the
818 1.1 christos definition of its TLS sym. */
819 1.1 christos HOWTO (R_PPC_DTPMOD32,
820 1.1 christos 0, /* rightshift */
821 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
822 1.1 christos 32, /* bitsize */
823 1.1 christos FALSE, /* pc_relative */
824 1.1 christos 0, /* bitpos */
825 1.1 christos complain_overflow_dont, /* complain_on_overflow */
826 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
827 1.1 christos "R_PPC_DTPMOD32", /* name */
828 1.1 christos FALSE, /* partial_inplace */
829 1.1 christos 0, /* src_mask */
830 1.1 christos 0xffffffff, /* dst_mask */
831 1.1 christos FALSE), /* pcrel_offset */
832 1.1 christos
833 1.1 christos /* Computes a dtv-relative displacement, the difference between the value
834 1.1 christos of sym+add and the base address of the thread-local storage block that
835 1.1 christos contains the definition of sym, minus 0x8000. */
836 1.1 christos HOWTO (R_PPC_DTPREL32,
837 1.1 christos 0, /* rightshift */
838 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
839 1.1 christos 32, /* bitsize */
840 1.1 christos FALSE, /* pc_relative */
841 1.1 christos 0, /* bitpos */
842 1.1 christos complain_overflow_dont, /* complain_on_overflow */
843 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
844 1.1 christos "R_PPC_DTPREL32", /* name */
845 1.1 christos FALSE, /* partial_inplace */
846 1.1 christos 0, /* src_mask */
847 1.1 christos 0xffffffff, /* dst_mask */
848 1.1 christos FALSE), /* pcrel_offset */
849 1.1 christos
850 1.1 christos /* A 16 bit dtprel reloc. */
851 1.1 christos HOWTO (R_PPC_DTPREL16,
852 1.1 christos 0, /* rightshift */
853 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
854 1.1 christos 16, /* bitsize */
855 1.1 christos FALSE, /* pc_relative */
856 1.1 christos 0, /* bitpos */
857 1.1 christos complain_overflow_signed, /* complain_on_overflow */
858 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
859 1.1 christos "R_PPC_DTPREL16", /* name */
860 1.1 christos FALSE, /* partial_inplace */
861 1.1 christos 0, /* src_mask */
862 1.1 christos 0xffff, /* dst_mask */
863 1.1 christos FALSE), /* pcrel_offset */
864 1.1 christos
865 1.1 christos /* Like DTPREL16, but no overflow. */
866 1.1 christos HOWTO (R_PPC_DTPREL16_LO,
867 1.1 christos 0, /* rightshift */
868 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
869 1.1 christos 16, /* bitsize */
870 1.1 christos FALSE, /* pc_relative */
871 1.1 christos 0, /* bitpos */
872 1.1 christos complain_overflow_dont, /* complain_on_overflow */
873 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
874 1.1 christos "R_PPC_DTPREL16_LO", /* name */
875 1.1 christos FALSE, /* partial_inplace */
876 1.1 christos 0, /* src_mask */
877 1.1 christos 0xffff, /* dst_mask */
878 1.1 christos FALSE), /* pcrel_offset */
879 1.1 christos
880 1.1 christos /* Like DTPREL16_LO, but next higher group of 16 bits. */
881 1.1 christos HOWTO (R_PPC_DTPREL16_HI,
882 1.1 christos 16, /* rightshift */
883 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
884 1.1 christos 16, /* bitsize */
885 1.1 christos FALSE, /* pc_relative */
886 1.1 christos 0, /* bitpos */
887 1.1 christos complain_overflow_dont, /* complain_on_overflow */
888 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
889 1.1 christos "R_PPC_DTPREL16_HI", /* name */
890 1.1 christos FALSE, /* partial_inplace */
891 1.1 christos 0, /* src_mask */
892 1.1 christos 0xffff, /* dst_mask */
893 1.1 christos FALSE), /* pcrel_offset */
894 1.1 christos
895 1.1 christos /* Like DTPREL16_HI, but adjust for low 16 bits. */
896 1.1 christos HOWTO (R_PPC_DTPREL16_HA,
897 1.1 christos 16, /* rightshift */
898 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
899 1.1 christos 16, /* bitsize */
900 1.1 christos FALSE, /* pc_relative */
901 1.1 christos 0, /* bitpos */
902 1.1 christos complain_overflow_dont, /* complain_on_overflow */
903 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
904 1.1 christos "R_PPC_DTPREL16_HA", /* name */
905 1.1 christos FALSE, /* partial_inplace */
906 1.1 christos 0, /* src_mask */
907 1.1 christos 0xffff, /* dst_mask */
908 1.1 christos FALSE), /* pcrel_offset */
909 1.1 christos
910 1.1 christos /* Computes a tp-relative displacement, the difference between the value of
911 1.1 christos sym+add and the value of the thread pointer (r13). */
912 1.1 christos HOWTO (R_PPC_TPREL32,
913 1.1 christos 0, /* rightshift */
914 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
915 1.1 christos 32, /* bitsize */
916 1.1 christos FALSE, /* pc_relative */
917 1.1 christos 0, /* bitpos */
918 1.1 christos complain_overflow_dont, /* complain_on_overflow */
919 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
920 1.1 christos "R_PPC_TPREL32", /* name */
921 1.1 christos FALSE, /* partial_inplace */
922 1.1 christos 0, /* src_mask */
923 1.1 christos 0xffffffff, /* dst_mask */
924 1.1 christos FALSE), /* pcrel_offset */
925 1.1 christos
926 1.1 christos /* A 16 bit tprel reloc. */
927 1.1 christos HOWTO (R_PPC_TPREL16,
928 1.1 christos 0, /* rightshift */
929 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
930 1.1 christos 16, /* bitsize */
931 1.1 christos FALSE, /* pc_relative */
932 1.1 christos 0, /* bitpos */
933 1.1 christos complain_overflow_signed, /* complain_on_overflow */
934 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
935 1.1 christos "R_PPC_TPREL16", /* name */
936 1.1 christos FALSE, /* partial_inplace */
937 1.1 christos 0, /* src_mask */
938 1.1 christos 0xffff, /* dst_mask */
939 1.1 christos FALSE), /* pcrel_offset */
940 1.1 christos
941 1.1 christos /* Like TPREL16, but no overflow. */
942 1.1 christos HOWTO (R_PPC_TPREL16_LO,
943 1.1 christos 0, /* rightshift */
944 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
945 1.1 christos 16, /* bitsize */
946 1.1 christos FALSE, /* pc_relative */
947 1.1 christos 0, /* bitpos */
948 1.1 christos complain_overflow_dont, /* complain_on_overflow */
949 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
950 1.1 christos "R_PPC_TPREL16_LO", /* name */
951 1.1 christos FALSE, /* partial_inplace */
952 1.1 christos 0, /* src_mask */
953 1.1 christos 0xffff, /* dst_mask */
954 1.1 christos FALSE), /* pcrel_offset */
955 1.1 christos
956 1.1 christos /* Like TPREL16_LO, but next higher group of 16 bits. */
957 1.1 christos HOWTO (R_PPC_TPREL16_HI,
958 1.1 christos 16, /* rightshift */
959 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
960 1.1 christos 16, /* bitsize */
961 1.1 christos FALSE, /* pc_relative */
962 1.1 christos 0, /* bitpos */
963 1.1 christos complain_overflow_dont, /* complain_on_overflow */
964 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
965 1.1 christos "R_PPC_TPREL16_HI", /* name */
966 1.1 christos FALSE, /* partial_inplace */
967 1.1 christos 0, /* src_mask */
968 1.1 christos 0xffff, /* dst_mask */
969 1.1 christos FALSE), /* pcrel_offset */
970 1.1 christos
971 1.1 christos /* Like TPREL16_HI, but adjust for low 16 bits. */
972 1.1 christos HOWTO (R_PPC_TPREL16_HA,
973 1.1 christos 16, /* rightshift */
974 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
975 1.1 christos 16, /* bitsize */
976 1.1 christos FALSE, /* pc_relative */
977 1.1 christos 0, /* bitpos */
978 1.1 christos complain_overflow_dont, /* complain_on_overflow */
979 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
980 1.1 christos "R_PPC_TPREL16_HA", /* name */
981 1.1 christos FALSE, /* partial_inplace */
982 1.1 christos 0, /* src_mask */
983 1.1 christos 0xffff, /* dst_mask */
984 1.1 christos FALSE), /* pcrel_offset */
985 1.1 christos
986 1.1 christos /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
987 1.1 christos with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
988 1.1 christos to the first entry. */
989 1.1 christos HOWTO (R_PPC_GOT_TLSGD16,
990 1.1 christos 0, /* rightshift */
991 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
992 1.1 christos 16, /* bitsize */
993 1.1 christos FALSE, /* pc_relative */
994 1.1 christos 0, /* bitpos */
995 1.1 christos complain_overflow_signed, /* complain_on_overflow */
996 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
997 1.1 christos "R_PPC_GOT_TLSGD16", /* name */
998 1.1 christos FALSE, /* partial_inplace */
999 1.1 christos 0, /* src_mask */
1000 1.1 christos 0xffff, /* dst_mask */
1001 1.1 christos FALSE), /* pcrel_offset */
1002 1.1 christos
1003 1.1 christos /* Like GOT_TLSGD16, but no overflow. */
1004 1.1 christos HOWTO (R_PPC_GOT_TLSGD16_LO,
1005 1.1 christos 0, /* rightshift */
1006 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1007 1.1 christos 16, /* bitsize */
1008 1.1 christos FALSE, /* pc_relative */
1009 1.1 christos 0, /* bitpos */
1010 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1011 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1012 1.1 christos "R_PPC_GOT_TLSGD16_LO", /* name */
1013 1.1 christos FALSE, /* partial_inplace */
1014 1.1 christos 0, /* src_mask */
1015 1.1 christos 0xffff, /* dst_mask */
1016 1.1 christos FALSE), /* pcrel_offset */
1017 1.1 christos
1018 1.1 christos /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1019 1.1 christos HOWTO (R_PPC_GOT_TLSGD16_HI,
1020 1.1 christos 16, /* rightshift */
1021 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1022 1.1 christos 16, /* bitsize */
1023 1.1 christos FALSE, /* pc_relative */
1024 1.1 christos 0, /* bitpos */
1025 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1026 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1027 1.1 christos "R_PPC_GOT_TLSGD16_HI", /* name */
1028 1.1 christos FALSE, /* partial_inplace */
1029 1.1 christos 0, /* src_mask */
1030 1.1 christos 0xffff, /* dst_mask */
1031 1.1 christos FALSE), /* pcrel_offset */
1032 1.1 christos
1033 1.1 christos /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1034 1.1 christos HOWTO (R_PPC_GOT_TLSGD16_HA,
1035 1.1 christos 16, /* rightshift */
1036 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1037 1.1 christos 16, /* bitsize */
1038 1.1 christos FALSE, /* pc_relative */
1039 1.1 christos 0, /* bitpos */
1040 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1041 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1042 1.1 christos "R_PPC_GOT_TLSGD16_HA", /* name */
1043 1.1 christos FALSE, /* partial_inplace */
1044 1.1 christos 0, /* src_mask */
1045 1.1 christos 0xffff, /* dst_mask */
1046 1.1 christos FALSE), /* pcrel_offset */
1047 1.1 christos
1048 1.1 christos /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1049 1.1 christos with values (sym+add)@dtpmod and zero, and computes the offset to the
1050 1.1 christos first entry. */
1051 1.1 christos HOWTO (R_PPC_GOT_TLSLD16,
1052 1.1 christos 0, /* rightshift */
1053 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1054 1.1 christos 16, /* bitsize */
1055 1.1 christos FALSE, /* pc_relative */
1056 1.1 christos 0, /* bitpos */
1057 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1058 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1059 1.1 christos "R_PPC_GOT_TLSLD16", /* name */
1060 1.1 christos FALSE, /* partial_inplace */
1061 1.1 christos 0, /* src_mask */
1062 1.1 christos 0xffff, /* dst_mask */
1063 1.1 christos FALSE), /* pcrel_offset */
1064 1.1 christos
1065 1.1 christos /* Like GOT_TLSLD16, but no overflow. */
1066 1.1 christos HOWTO (R_PPC_GOT_TLSLD16_LO,
1067 1.1 christos 0, /* rightshift */
1068 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1069 1.1 christos 16, /* bitsize */
1070 1.1 christos FALSE, /* pc_relative */
1071 1.1 christos 0, /* bitpos */
1072 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1073 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1074 1.1 christos "R_PPC_GOT_TLSLD16_LO", /* name */
1075 1.1 christos FALSE, /* partial_inplace */
1076 1.1 christos 0, /* src_mask */
1077 1.1 christos 0xffff, /* dst_mask */
1078 1.1 christos FALSE), /* pcrel_offset */
1079 1.1 christos
1080 1.1 christos /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1081 1.1 christos HOWTO (R_PPC_GOT_TLSLD16_HI,
1082 1.1 christos 16, /* rightshift */
1083 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1084 1.1 christos 16, /* bitsize */
1085 1.1 christos FALSE, /* pc_relative */
1086 1.1 christos 0, /* bitpos */
1087 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1088 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1089 1.1 christos "R_PPC_GOT_TLSLD16_HI", /* name */
1090 1.1 christos FALSE, /* partial_inplace */
1091 1.1 christos 0, /* src_mask */
1092 1.1 christos 0xffff, /* dst_mask */
1093 1.1 christos FALSE), /* pcrel_offset */
1094 1.1 christos
1095 1.1 christos /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1096 1.1 christos HOWTO (R_PPC_GOT_TLSLD16_HA,
1097 1.1 christos 16, /* rightshift */
1098 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1099 1.1 christos 16, /* bitsize */
1100 1.1 christos FALSE, /* pc_relative */
1101 1.1 christos 0, /* bitpos */
1102 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1103 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1104 1.1 christos "R_PPC_GOT_TLSLD16_HA", /* name */
1105 1.1 christos FALSE, /* partial_inplace */
1106 1.1 christos 0, /* src_mask */
1107 1.1 christos 0xffff, /* dst_mask */
1108 1.1 christos FALSE), /* pcrel_offset */
1109 1.1 christos
1110 1.1 christos /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1111 1.1 christos the offset to the entry. */
1112 1.1 christos HOWTO (R_PPC_GOT_DTPREL16,
1113 1.1 christos 0, /* rightshift */
1114 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1115 1.1 christos 16, /* bitsize */
1116 1.1 christos FALSE, /* pc_relative */
1117 1.1 christos 0, /* bitpos */
1118 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1119 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1120 1.1 christos "R_PPC_GOT_DTPREL16", /* name */
1121 1.1 christos FALSE, /* partial_inplace */
1122 1.1 christos 0, /* src_mask */
1123 1.1 christos 0xffff, /* dst_mask */
1124 1.1 christos FALSE), /* pcrel_offset */
1125 1.1 christos
1126 1.1 christos /* Like GOT_DTPREL16, but no overflow. */
1127 1.1 christos HOWTO (R_PPC_GOT_DTPREL16_LO,
1128 1.1 christos 0, /* rightshift */
1129 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1130 1.1 christos 16, /* bitsize */
1131 1.1 christos FALSE, /* pc_relative */
1132 1.1 christos 0, /* bitpos */
1133 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1134 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1135 1.1 christos "R_PPC_GOT_DTPREL16_LO", /* name */
1136 1.1 christos FALSE, /* partial_inplace */
1137 1.1 christos 0, /* src_mask */
1138 1.1 christos 0xffff, /* dst_mask */
1139 1.1 christos FALSE), /* pcrel_offset */
1140 1.1 christos
1141 1.1 christos /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1142 1.1 christos HOWTO (R_PPC_GOT_DTPREL16_HI,
1143 1.1 christos 16, /* rightshift */
1144 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1145 1.1 christos 16, /* bitsize */
1146 1.1 christos FALSE, /* pc_relative */
1147 1.1 christos 0, /* bitpos */
1148 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1149 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1150 1.1 christos "R_PPC_GOT_DTPREL16_HI", /* name */
1151 1.1 christos FALSE, /* partial_inplace */
1152 1.1 christos 0, /* src_mask */
1153 1.1 christos 0xffff, /* dst_mask */
1154 1.1 christos FALSE), /* pcrel_offset */
1155 1.1 christos
1156 1.1 christos /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1157 1.1 christos HOWTO (R_PPC_GOT_DTPREL16_HA,
1158 1.1 christos 16, /* rightshift */
1159 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1160 1.1 christos 16, /* bitsize */
1161 1.1 christos FALSE, /* pc_relative */
1162 1.1 christos 0, /* bitpos */
1163 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1164 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1165 1.1 christos "R_PPC_GOT_DTPREL16_HA", /* name */
1166 1.1 christos FALSE, /* partial_inplace */
1167 1.1 christos 0, /* src_mask */
1168 1.1 christos 0xffff, /* dst_mask */
1169 1.1 christos FALSE), /* pcrel_offset */
1170 1.1 christos
1171 1.1 christos /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1172 1.1 christos offset to the entry. */
1173 1.1 christos HOWTO (R_PPC_GOT_TPREL16,
1174 1.1 christos 0, /* rightshift */
1175 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1176 1.1 christos 16, /* bitsize */
1177 1.1 christos FALSE, /* pc_relative */
1178 1.1 christos 0, /* bitpos */
1179 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1180 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1181 1.1 christos "R_PPC_GOT_TPREL16", /* name */
1182 1.1 christos FALSE, /* partial_inplace */
1183 1.1 christos 0, /* src_mask */
1184 1.1 christos 0xffff, /* dst_mask */
1185 1.1 christos FALSE), /* pcrel_offset */
1186 1.1 christos
1187 1.1 christos /* Like GOT_TPREL16, but no overflow. */
1188 1.1 christos HOWTO (R_PPC_GOT_TPREL16_LO,
1189 1.1 christos 0, /* rightshift */
1190 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1191 1.1 christos 16, /* bitsize */
1192 1.1 christos FALSE, /* pc_relative */
1193 1.1 christos 0, /* bitpos */
1194 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1195 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1196 1.1 christos "R_PPC_GOT_TPREL16_LO", /* name */
1197 1.1 christos FALSE, /* partial_inplace */
1198 1.1 christos 0, /* src_mask */
1199 1.1 christos 0xffff, /* dst_mask */
1200 1.1 christos FALSE), /* pcrel_offset */
1201 1.1 christos
1202 1.1 christos /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1203 1.1 christos HOWTO (R_PPC_GOT_TPREL16_HI,
1204 1.1 christos 16, /* rightshift */
1205 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1206 1.1 christos 16, /* bitsize */
1207 1.1 christos FALSE, /* pc_relative */
1208 1.1 christos 0, /* bitpos */
1209 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1210 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1211 1.1 christos "R_PPC_GOT_TPREL16_HI", /* name */
1212 1.1 christos FALSE, /* partial_inplace */
1213 1.1 christos 0, /* src_mask */
1214 1.1 christos 0xffff, /* dst_mask */
1215 1.1 christos FALSE), /* pcrel_offset */
1216 1.1 christos
1217 1.1 christos /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1218 1.1 christos HOWTO (R_PPC_GOT_TPREL16_HA,
1219 1.1 christos 16, /* rightshift */
1220 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1221 1.1 christos 16, /* bitsize */
1222 1.1 christos FALSE, /* pc_relative */
1223 1.1 christos 0, /* bitpos */
1224 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1225 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1226 1.1 christos "R_PPC_GOT_TPREL16_HA", /* name */
1227 1.1 christos FALSE, /* partial_inplace */
1228 1.1 christos 0, /* src_mask */
1229 1.1 christos 0xffff, /* dst_mask */
1230 1.1 christos FALSE), /* pcrel_offset */
1231 1.1 christos
1232 1.1 christos /* The remaining relocs are from the Embedded ELF ABI, and are not
1233 1.1 christos in the SVR4 ELF ABI. */
1234 1.1 christos
1235 1.1 christos /* 32 bit value resulting from the addend minus the symbol. */
1236 1.1 christos HOWTO (R_PPC_EMB_NADDR32, /* type */
1237 1.1 christos 0, /* rightshift */
1238 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1239 1.1 christos 32, /* bitsize */
1240 1.1 christos FALSE, /* pc_relative */
1241 1.1.1.2 christos 0, /* bitpos */
1242 1.1.1.4 christos complain_overflow_dont, /* complain_on_overflow */
1243 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1244 1.1 christos "R_PPC_EMB_NADDR32", /* name */
1245 1.1 christos FALSE, /* partial_inplace */
1246 1.1 christos 0, /* src_mask */
1247 1.1 christos 0xffffffff, /* dst_mask */
1248 1.1 christos FALSE), /* pcrel_offset */
1249 1.1 christos
1250 1.1 christos /* 16 bit value resulting from the addend minus the symbol. */
1251 1.1 christos HOWTO (R_PPC_EMB_NADDR16, /* type */
1252 1.1 christos 0, /* rightshift */
1253 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1254 1.1 christos 16, /* bitsize */
1255 1.1 christos FALSE, /* pc_relative */
1256 1.1.1.2 christos 0, /* bitpos */
1257 1.1.1.4 christos complain_overflow_signed, /* complain_on_overflow */
1258 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1259 1.1 christos "R_PPC_EMB_NADDR16", /* name */
1260 1.1 christos FALSE, /* partial_inplace */
1261 1.1 christos 0, /* src_mask */
1262 1.1 christos 0xffff, /* dst_mask */
1263 1.1 christos FALSE), /* pcrel_offset */
1264 1.1 christos
1265 1.1 christos /* 16 bit value resulting from the addend minus the symbol. */
1266 1.1 christos HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1267 1.1 christos 0, /* rightshift */
1268 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1269 1.1 christos 16, /* bitsize */
1270 1.1 christos FALSE, /* pc_relative */
1271 1.1 christos 0, /* bitpos */
1272 1.1.1.4 christos complain_overflow_dont,/* complain_on_overflow */
1273 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1274 1.1 christos "R_PPC_EMB_ADDR16_LO", /* name */
1275 1.1 christos FALSE, /* partial_inplace */
1276 1.1 christos 0, /* src_mask */
1277 1.1 christos 0xffff, /* dst_mask */
1278 1.1 christos FALSE), /* pcrel_offset */
1279 1.1 christos
1280 1.1 christos /* The high order 16 bits of the addend minus the symbol. */
1281 1.1 christos HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1282 1.1 christos 16, /* rightshift */
1283 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1284 1.1 christos 16, /* bitsize */
1285 1.1 christos FALSE, /* pc_relative */
1286 1.1 christos 0, /* bitpos */
1287 1.1.1.4 christos complain_overflow_dont, /* complain_on_overflow */
1288 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1289 1.1 christos "R_PPC_EMB_NADDR16_HI", /* name */
1290 1.1 christos FALSE, /* partial_inplace */
1291 1.1 christos 0, /* src_mask */
1292 1.1 christos 0xffff, /* dst_mask */
1293 1.1 christos FALSE), /* pcrel_offset */
1294 1.1 christos
1295 1.1 christos /* The high order 16 bits of the result of the addend minus the address,
1296 1.1 christos plus 1 if the contents of the low 16 bits, treated as a signed number,
1297 1.1 christos is negative. */
1298 1.1 christos HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1299 1.1 christos 16, /* rightshift */
1300 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1301 1.1 christos 16, /* bitsize */
1302 1.1 christos FALSE, /* pc_relative */
1303 1.1 christos 0, /* bitpos */
1304 1.1.1.4 christos complain_overflow_dont, /* complain_on_overflow */
1305 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1306 1.1 christos "R_PPC_EMB_NADDR16_HA", /* name */
1307 1.1 christos FALSE, /* partial_inplace */
1308 1.1 christos 0, /* src_mask */
1309 1.1 christos 0xffff, /* dst_mask */
1310 1.1 christos FALSE), /* pcrel_offset */
1311 1.1 christos
1312 1.1 christos /* 16 bit value resulting from allocating a 4 byte word to hold an
1313 1.1 christos address in the .sdata section, and returning the offset from
1314 1.1 christos _SDA_BASE_ for that relocation. */
1315 1.1 christos HOWTO (R_PPC_EMB_SDAI16, /* type */
1316 1.1 christos 0, /* 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 1.1.1.4 christos complain_overflow_signed, /* complain_on_overflow */
1322 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1323 1.1 christos "R_PPC_EMB_SDAI16", /* 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 /* 16 bit value resulting from allocating a 4 byte word to hold an
1330 1.1 christos address in the .sdata2 section, and returning the offset from
1331 1.1 christos _SDA2_BASE_ for that relocation. */
1332 1.1 christos HOWTO (R_PPC_EMB_SDA2I16, /* type */
1333 1.1 christos 0, /* 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 1.1.1.4 christos complain_overflow_signed, /* complain_on_overflow */
1339 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1340 1.1 christos "R_PPC_EMB_SDA2I16", /* 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 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1347 1.1 christos small data items. */
1348 1.1 christos HOWTO (R_PPC_EMB_SDA2REL, /* type */
1349 1.1 christos 0, /* rightshift */
1350 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1351 1.1 christos 16, /* bitsize */
1352 1.1 christos FALSE, /* pc_relative */
1353 1.1 christos 0, /* bitpos */
1354 1.1.1.4 christos complain_overflow_signed, /* complain_on_overflow */
1355 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1356 1.1 christos "R_PPC_EMB_SDA2REL", /* name */
1357 1.1 christos FALSE, /* partial_inplace */
1358 1.1 christos 0, /* src_mask */
1359 1.1 christos 0xffff, /* dst_mask */
1360 1.1 christos FALSE), /* pcrel_offset */
1361 1.1 christos
1362 1.1 christos /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1363 1.1 christos signed offset from the appropriate base, and filling in the register
1364 1.1 christos field with the appropriate register (0, 2, or 13). */
1365 1.1 christos HOWTO (R_PPC_EMB_SDA21, /* type */
1366 1.1 christos 0, /* rightshift */
1367 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1368 1.1 christos 16, /* bitsize */
1369 1.1 christos FALSE, /* pc_relative */
1370 1.1 christos 0, /* bitpos */
1371 1.1.1.4 christos complain_overflow_signed, /* complain_on_overflow */
1372 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1373 1.1 christos "R_PPC_EMB_SDA21", /* name */
1374 1.1 christos FALSE, /* partial_inplace */
1375 1.1 christos 0, /* src_mask */
1376 1.1 christos 0xffff, /* dst_mask */
1377 1.1 christos FALSE), /* pcrel_offset */
1378 1.1 christos
1379 1.1 christos /* Relocation not handled: R_PPC_EMB_MRKREF */
1380 1.1 christos /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1381 1.1 christos /* Relocation not handled: R_PPC_EMB_RELST_LO */
1382 1.1 christos /* Relocation not handled: R_PPC_EMB_RELST_HI */
1383 1.1 christos /* Relocation not handled: R_PPC_EMB_RELST_HA */
1384 1.1 christos /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1385 1.1 christos
1386 1.1 christos /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1387 1.1 christos in the 16 bit signed offset from the appropriate base, and filling in the
1388 1.1 christos register field with the appropriate register (0, 2, or 13). */
1389 1.1 christos HOWTO (R_PPC_EMB_RELSDA, /* type */
1390 1.1 christos 0, /* rightshift */
1391 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1392 1.1 christos 16, /* bitsize */
1393 1.1 christos FALSE, /* pc_relative */
1394 1.1 christos 0, /* bitpos */
1395 1.1.1.4 christos complain_overflow_signed, /* complain_on_overflow */
1396 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1397 1.1 christos "R_PPC_EMB_RELSDA", /* name */
1398 1.1 christos FALSE, /* partial_inplace */
1399 1.1 christos 0, /* src_mask */
1400 1.1 christos 0xffff, /* dst_mask */
1401 1.1 christos FALSE), /* pcrel_offset */
1402 1.1 christos
1403 1.1 christos /* A relative 8 bit branch. */
1404 1.1 christos HOWTO (R_PPC_VLE_REL8, /* type */
1405 1.1 christos 1, /* rightshift */
1406 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1407 1.1 christos 8, /* bitsize */
1408 1.1 christos TRUE, /* pc_relative */
1409 1.1 christos 0, /* bitpos */
1410 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1411 1.1 christos bfd_elf_generic_reloc, /* special_function */
1412 1.1 christos "R_PPC_VLE_REL8", /* name */
1413 1.1 christos FALSE, /* partial_inplace */
1414 1.1 christos 0, /* src_mask */
1415 1.1 christos 0xff, /* dst_mask */
1416 1.1 christos TRUE), /* pcrel_offset */
1417 1.1 christos
1418 1.1 christos /* A relative 15 bit branch. */
1419 1.1 christos HOWTO (R_PPC_VLE_REL15, /* type */
1420 1.1 christos 1, /* rightshift */
1421 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1422 1.1 christos 15, /* bitsize */
1423 1.1 christos TRUE, /* pc_relative */
1424 1.1 christos 1, /* bitpos */
1425 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1426 1.1 christos bfd_elf_generic_reloc, /* special_function */
1427 1.1 christos "R_PPC_VLE_REL15", /* name */
1428 1.1 christos FALSE, /* partial_inplace */
1429 1.1.1.5 christos 0, /* src_mask */
1430 1.1 christos 0xfffe, /* dst_mask */
1431 1.1 christos TRUE), /* pcrel_offset */
1432 1.1 christos
1433 1.1 christos /* A relative 24 bit branch. */
1434 1.1 christos HOWTO (R_PPC_VLE_REL24, /* type */
1435 1.1 christos 1, /* rightshift */
1436 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1437 1.1 christos 24, /* bitsize */
1438 1.1 christos TRUE, /* pc_relative */
1439 1.1 christos 1, /* bitpos */
1440 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1441 1.1 christos bfd_elf_generic_reloc, /* special_function */
1442 1.1 christos "R_PPC_VLE_REL24", /* name */
1443 1.1 christos FALSE, /* partial_inplace */
1444 1.1 christos 0, /* src_mask */
1445 1.1 christos 0x1fffffe, /* dst_mask */
1446 1.1 christos TRUE), /* pcrel_offset */
1447 1.1 christos
1448 1.1 christos /* The 16 LSBS in split16a format. */
1449 1.1 christos HOWTO (R_PPC_VLE_LO16A, /* type */
1450 1.1 christos 0, /* rightshift */
1451 1.1.1.2 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1452 1.1 christos 16, /* bitsize */
1453 1.1 christos FALSE, /* pc_relative */
1454 1.1.1.2 christos 0, /* bitpos */
1455 1.1.1.4 christos complain_overflow_dont, /* complain_on_overflow */
1456 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1457 1.1 christos "R_PPC_VLE_LO16A", /* name */
1458 1.1 christos FALSE, /* partial_inplace */
1459 1.1.1.5 christos 0, /* src_mask */
1460 1.1 christos 0x1f07ff, /* dst_mask */
1461 1.1 christos FALSE), /* pcrel_offset */
1462 1.1 christos
1463 1.1 christos /* The 16 LSBS in split16d format. */
1464 1.1 christos HOWTO (R_PPC_VLE_LO16D, /* type */
1465 1.1 christos 0, /* rightshift */
1466 1.1.1.2 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1467 1.1 christos 16, /* bitsize */
1468 1.1 christos FALSE, /* pc_relative */
1469 1.1.1.2 christos 0, /* bitpos */
1470 1.1.1.4 christos complain_overflow_dont, /* complain_on_overflow */
1471 1.1.1.4 christos ppc_elf_unhandled_reloc, /* special_function */
1472 1.1 christos "R_PPC_VLE_LO16D", /* name */
1473 1.1 christos FALSE, /* partial_inplace */
1474 1.1.1.5 christos 0, /* src_mask */
1475 1.1 christos 0x3e007ff, /* dst_mask */
1476 1.1 christos FALSE), /* pcrel_offset */
1477 1.1 christos
1478 1.1 christos /* Bits 16-31 split16a format. */
1479 1.1.1.2 christos HOWTO (R_PPC_VLE_HI16A, /* type */
1480 1.1 christos 16, /* rightshift */
1481 1.1.1.2 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1482 1.1 christos 16, /* bitsize */
1483 1.1 christos FALSE, /* pc_relative */
1484 1.1.1.2 christos 0, /* bitpos */
1485 1.1.1.4 christos complain_overflow_dont, /* complain_on_overflow */
1486 1.1.1.4 christos ppc_elf_unhandled_reloc, /* special_function */
1487 1.1 christos "R_PPC_VLE_HI16A", /* name */
1488 1.1 christos FALSE, /* partial_inplace */
1489 1.1.1.5 christos 0, /* src_mask */
1490 1.1 christos 0x1f07ff, /* dst_mask */
1491 1.1 christos FALSE), /* pcrel_offset */
1492 1.1 christos
1493 1.1 christos /* Bits 16-31 split16d format. */
1494 1.1.1.2 christos HOWTO (R_PPC_VLE_HI16D, /* type */
1495 1.1 christos 16, /* rightshift */
1496 1.1.1.2 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1497 1.1 christos 16, /* bitsize */
1498 1.1 christos FALSE, /* pc_relative */
1499 1.1.1.2 christos 0, /* bitpos */
1500 1.1.1.4 christos complain_overflow_dont, /* complain_on_overflow */
1501 1.1.1.4 christos ppc_elf_unhandled_reloc, /* special_function */
1502 1.1 christos "R_PPC_VLE_HI16D", /* name */
1503 1.1 christos FALSE, /* partial_inplace */
1504 1.1.1.5 christos 0, /* src_mask */
1505 1.1 christos 0x3e007ff, /* dst_mask */
1506 1.1 christos FALSE), /* pcrel_offset */
1507 1.1 christos
1508 1.1 christos /* Bits 16-31 (High Adjusted) in split16a format. */
1509 1.1.1.2 christos HOWTO (R_PPC_VLE_HA16A, /* type */
1510 1.1 christos 16, /* rightshift */
1511 1.1.1.2 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1512 1.1 christos 16, /* bitsize */
1513 1.1 christos FALSE, /* pc_relative */
1514 1.1.1.2 christos 0, /* bitpos */
1515 1.1.1.4 christos complain_overflow_dont, /* complain_on_overflow */
1516 1.1.1.4 christos ppc_elf_unhandled_reloc, /* special_function */
1517 1.1 christos "R_PPC_VLE_HA16A", /* name */
1518 1.1 christos FALSE, /* partial_inplace */
1519 1.1.1.5 christos 0, /* src_mask */
1520 1.1 christos 0x1f07ff, /* dst_mask */
1521 1.1 christos FALSE), /* pcrel_offset */
1522 1.1 christos
1523 1.1 christos /* Bits 16-31 (High Adjusted) in split16d format. */
1524 1.1.1.2 christos HOWTO (R_PPC_VLE_HA16D, /* type */
1525 1.1 christos 16, /* rightshift */
1526 1.1.1.2 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1527 1.1 christos 16, /* bitsize */
1528 1.1 christos FALSE, /* pc_relative */
1529 1.1.1.2 christos 0, /* bitpos */
1530 1.1.1.4 christos complain_overflow_dont, /* complain_on_overflow */
1531 1.1.1.4 christos ppc_elf_unhandled_reloc, /* special_function */
1532 1.1 christos "R_PPC_VLE_HA16D", /* name */
1533 1.1 christos FALSE, /* partial_inplace */
1534 1.1.1.5 christos 0, /* src_mask */
1535 1.1 christos 0x3e007ff, /* dst_mask */
1536 1.1 christos FALSE), /* pcrel_offset */
1537 1.1.1.2 christos
1538 1.1.1.2 christos /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
1539 1.1.1.2 christos instructions. If the register base is 0 then the linker changes
1540 1.1.1.2 christos the e_add16i to an e_li instruction. */
1541 1.1 christos HOWTO (R_PPC_VLE_SDA21, /* type */
1542 1.1 christos 0, /* rightshift */
1543 1.1.1.2 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1544 1.1 christos 16, /* bitsize */
1545 1.1 christos FALSE, /* pc_relative */
1546 1.1.1.2 christos 0, /* bitpos */
1547 1.1.1.4 christos complain_overflow_signed, /* complain_on_overflow */
1548 1.1.1.4 christos ppc_elf_unhandled_reloc, /* special_function */
1549 1.1 christos "R_PPC_VLE_SDA21", /* name */
1550 1.1 christos FALSE, /* partial_inplace */
1551 1.1 christos 0, /* src_mask */
1552 1.1 christos 0xffff, /* dst_mask */
1553 1.1 christos FALSE), /* pcrel_offset */
1554 1.1.1.2 christos
1555 1.1 christos /* Like R_PPC_VLE_SDA21 but ignore overflow. */
1556 1.1 christos HOWTO (R_PPC_VLE_SDA21_LO, /* type */
1557 1.1 christos 0, /* rightshift */
1558 1.1.1.2 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1559 1.1 christos 16, /* bitsize */
1560 1.1 christos FALSE, /* pc_relative */
1561 1.1.1.2 christos 0, /* bitpos */
1562 1.1.1.4 christos complain_overflow_dont, /* complain_on_overflow */
1563 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1564 1.1 christos "R_PPC_VLE_SDA21_LO", /* name */
1565 1.1 christos FALSE, /* partial_inplace */
1566 1.1.1.2 christos 0, /* src_mask */
1567 1.1 christos 0xffff, /* dst_mask */
1568 1.1 christos FALSE), /* pcrel_offset */
1569 1.1 christos
1570 1.1 christos /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1571 1.1 christos HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */
1572 1.1 christos 0, /* rightshift */
1573 1.1.1.2 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1574 1.1 christos 16, /* bitsize */
1575 1.1 christos FALSE, /* pc_relative */
1576 1.1.1.4 christos 0, /* bitpos */
1577 1.1.1.4 christos complain_overflow_dont, /* complain_on_overflow */
1578 1.1.1.4 christos ppc_elf_unhandled_reloc, /* special_function */
1579 1.1 christos "R_PPC_VLE_SDAREL_LO16A", /* name */
1580 1.1 christos FALSE, /* partial_inplace */
1581 1.1.1.5 christos 0, /* src_mask */
1582 1.1 christos 0x1f07ff, /* dst_mask */
1583 1.1 christos FALSE), /* pcrel_offset */
1584 1.1 christos
1585 1.1 christos /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
1586 1.1 christos HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */
1587 1.1 christos 0, /* rightshift */
1588 1.1.1.2 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1589 1.1 christos 16, /* bitsize */
1590 1.1 christos FALSE, /* pc_relative */
1591 1.1.1.4 christos 0, /* bitpos */
1592 1.1.1.4 christos complain_overflow_dont, /* complain_on_overflow */
1593 1.1.1.4 christos ppc_elf_unhandled_reloc, /* special_function */
1594 1.1 christos "R_PPC_VLE_SDAREL_LO16D", /* name */
1595 1.1 christos FALSE, /* partial_inplace */
1596 1.1.1.5 christos 0, /* src_mask */
1597 1.1 christos 0x3e007ff, /* dst_mask */
1598 1.1 christos FALSE), /* pcrel_offset */
1599 1.1 christos
1600 1.1.1.4 christos /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1601 1.1.1.2 christos HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */
1602 1.1 christos 16, /* rightshift */
1603 1.1.1.2 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1604 1.1 christos 16, /* bitsize */
1605 1.1 christos FALSE, /* pc_relative */
1606 1.1.1.4 christos 0, /* bitpos */
1607 1.1.1.4 christos complain_overflow_dont, /* complain_on_overflow */
1608 1.1.1.4 christos ppc_elf_unhandled_reloc, /* special_function */
1609 1.1 christos "R_PPC_VLE_SDAREL_HI16A", /* name */
1610 1.1 christos FALSE, /* partial_inplace */
1611 1.1.1.5 christos 0, /* src_mask */
1612 1.1 christos 0x1f07ff, /* dst_mask */
1613 1.1 christos FALSE), /* pcrel_offset */
1614 1.1 christos
1615 1.1.1.4 christos /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1616 1.1.1.2 christos HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */
1617 1.1 christos 16, /* rightshift */
1618 1.1.1.2 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1619 1.1 christos 16, /* bitsize */
1620 1.1 christos FALSE, /* pc_relative */
1621 1.1.1.4 christos 0, /* bitpos */
1622 1.1.1.4 christos complain_overflow_dont, /* complain_on_overflow */
1623 1.1.1.4 christos ppc_elf_unhandled_reloc, /* special_function */
1624 1.1 christos "R_PPC_VLE_SDAREL_HI16D", /* name */
1625 1.1 christos FALSE, /* partial_inplace */
1626 1.1.1.5 christos 0, /* src_mask */
1627 1.1 christos 0x3e007ff, /* dst_mask */
1628 1.1 christos FALSE), /* pcrel_offset */
1629 1.1 christos
1630 1.1.1.4 christos /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1631 1.1.1.2 christos HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */
1632 1.1 christos 16, /* rightshift */
1633 1.1.1.2 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1634 1.1 christos 16, /* bitsize */
1635 1.1 christos FALSE, /* pc_relative */
1636 1.1.1.4 christos 0, /* bitpos */
1637 1.1.1.4 christos complain_overflow_dont, /* complain_on_overflow */
1638 1.1.1.4 christos ppc_elf_unhandled_reloc, /* special_function */
1639 1.1 christos "R_PPC_VLE_SDAREL_HA16A", /* name */
1640 1.1 christos FALSE, /* partial_inplace */
1641 1.1.1.5 christos 0, /* src_mask */
1642 1.1 christos 0x1f07ff, /* dst_mask */
1643 1.1 christos FALSE), /* pcrel_offset */
1644 1.1 christos
1645 1.1.1.4 christos /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1646 1.1.1.2 christos HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */
1647 1.1 christos 16, /* rightshift */
1648 1.1.1.2 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1649 1.1 christos 16, /* bitsize */
1650 1.1 christos FALSE, /* pc_relative */
1651 1.1.1.4 christos 0, /* bitpos */
1652 1.1.1.4 christos complain_overflow_dont, /* complain_on_overflow */
1653 1.1.1.4 christos ppc_elf_unhandled_reloc, /* special_function */
1654 1.1 christos "R_PPC_VLE_SDAREL_HA16D", /* name */
1655 1.1 christos FALSE, /* partial_inplace */
1656 1.1.1.5 christos 0, /* src_mask */
1657 1.1 christos 0x3e007ff, /* dst_mask */
1658 1.1 christos FALSE), /* pcrel_offset */
1659 1.1 christos
1660 1.1 christos HOWTO (R_PPC_IRELATIVE, /* type */
1661 1.1 christos 0, /* rightshift */
1662 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1663 1.1 christos 32, /* bitsize */
1664 1.1 christos FALSE, /* pc_relative */
1665 1.1.1.2 christos 0, /* bitpos */
1666 1.1.1.4 christos complain_overflow_dont, /* complain_on_overflow */
1667 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1668 1.1 christos "R_PPC_IRELATIVE", /* name */
1669 1.1 christos FALSE, /* partial_inplace */
1670 1.1 christos 0, /* src_mask */
1671 1.1 christos 0xffffffff, /* dst_mask */
1672 1.1 christos FALSE), /* pcrel_offset */
1673 1.1 christos
1674 1.1 christos /* A 16 bit relative relocation. */
1675 1.1 christos HOWTO (R_PPC_REL16, /* type */
1676 1.1 christos 0, /* rightshift */
1677 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1678 1.1 christos 16, /* bitsize */
1679 1.1 christos TRUE, /* pc_relative */
1680 1.1.1.2 christos 0, /* bitpos */
1681 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1682 1.1 christos bfd_elf_generic_reloc, /* special_function */
1683 1.1 christos "R_PPC_REL16", /* name */
1684 1.1 christos FALSE, /* partial_inplace */
1685 1.1 christos 0, /* src_mask */
1686 1.1 christos 0xffff, /* dst_mask */
1687 1.1 christos TRUE), /* pcrel_offset */
1688 1.1 christos
1689 1.1 christos /* A 16 bit relative relocation without overflow. */
1690 1.1 christos HOWTO (R_PPC_REL16_LO, /* type */
1691 1.1 christos 0, /* rightshift */
1692 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1693 1.1 christos 16, /* bitsize */
1694 1.1 christos TRUE, /* pc_relative */
1695 1.1 christos 0, /* bitpos */
1696 1.1 christos complain_overflow_dont,/* complain_on_overflow */
1697 1.1 christos bfd_elf_generic_reloc, /* special_function */
1698 1.1 christos "R_PPC_REL16_LO", /* name */
1699 1.1 christos FALSE, /* partial_inplace */
1700 1.1 christos 0, /* src_mask */
1701 1.1 christos 0xffff, /* dst_mask */
1702 1.1 christos TRUE), /* pcrel_offset */
1703 1.1 christos
1704 1.1 christos /* The high order 16 bits of a relative address. */
1705 1.1 christos HOWTO (R_PPC_REL16_HI, /* type */
1706 1.1 christos 16, /* rightshift */
1707 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1708 1.1 christos 16, /* bitsize */
1709 1.1 christos TRUE, /* pc_relative */
1710 1.1 christos 0, /* bitpos */
1711 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1712 1.1 christos bfd_elf_generic_reloc, /* special_function */
1713 1.1 christos "R_PPC_REL16_HI", /* name */
1714 1.1 christos FALSE, /* partial_inplace */
1715 1.1 christos 0, /* src_mask */
1716 1.1 christos 0xffff, /* dst_mask */
1717 1.1 christos TRUE), /* pcrel_offset */
1718 1.1 christos
1719 1.1 christos /* The high order 16 bits of a relative address, plus 1 if the contents of
1720 1.1 christos the low 16 bits, treated as a signed number, is negative. */
1721 1.1 christos HOWTO (R_PPC_REL16_HA, /* type */
1722 1.1 christos 16, /* rightshift */
1723 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1724 1.1 christos 16, /* bitsize */
1725 1.1 christos TRUE, /* pc_relative */
1726 1.1 christos 0, /* bitpos */
1727 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1728 1.1 christos ppc_elf_addr16_ha_reloc, /* special_function */
1729 1.1 christos "R_PPC_REL16_HA", /* name */
1730 1.1 christos FALSE, /* partial_inplace */
1731 1.1 christos 0, /* src_mask */
1732 1.1 christos 0xffff, /* dst_mask */
1733 1.1 christos TRUE), /* pcrel_offset */
1734 1.1.1.4 christos
1735 1.1.1.4 christos /* Like R_PPC_REL16_HA but for split field in addpcis. */
1736 1.1.1.4 christos HOWTO (R_PPC_REL16DX_HA, /* type */
1737 1.1.1.4 christos 16, /* rightshift */
1738 1.1.1.4 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1739 1.1.1.4 christos 16, /* bitsize */
1740 1.1.1.4 christos TRUE, /* pc_relative */
1741 1.1.1.4 christos 0, /* bitpos */
1742 1.1.1.4 christos complain_overflow_signed, /* complain_on_overflow */
1743 1.1.1.4 christos ppc_elf_addr16_ha_reloc, /* special_function */
1744 1.1.1.4 christos "R_PPC_REL16DX_HA", /* name */
1745 1.1.1.4 christos FALSE, /* partial_inplace */
1746 1.1.1.4 christos 0, /* src_mask */
1747 1.1.1.4 christos 0x1fffc1, /* dst_mask */
1748 1.1.1.4 christos TRUE), /* pcrel_offset */
1749 1.1.1.5 christos
1750 1.1.1.5 christos /* A split-field reloc for addpcis, non-relative (gas internal use only). */
1751 1.1.1.5 christos HOWTO (R_PPC_16DX_HA, /* type */
1752 1.1.1.5 christos 16, /* rightshift */
1753 1.1.1.5 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1754 1.1.1.5 christos 16, /* bitsize */
1755 1.1.1.5 christos FALSE, /* pc_relative */
1756 1.1.1.5 christos 0, /* bitpos */
1757 1.1.1.5 christos complain_overflow_signed, /* complain_on_overflow */
1758 1.1.1.5 christos ppc_elf_addr16_ha_reloc, /* special_function */
1759 1.1.1.5 christos "R_PPC_16DX_HA", /* name */
1760 1.1.1.5 christos FALSE, /* partial_inplace */
1761 1.1.1.5 christos 0, /* src_mask */
1762 1.1.1.5 christos 0x1fffc1, /* dst_mask */
1763 1.1.1.5 christos FALSE), /* pcrel_offset */
1764 1.1 christos
1765 1.1 christos /* GNU extension to record C++ vtable hierarchy. */
1766 1.1 christos HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1767 1.1 christos 0, /* rightshift */
1768 1.1 christos 0, /* size (0 = byte, 1 = short, 2 = long) */
1769 1.1 christos 0, /* bitsize */
1770 1.1 christos FALSE, /* pc_relative */
1771 1.1 christos 0, /* bitpos */
1772 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1773 1.1 christos NULL, /* special_function */
1774 1.1 christos "R_PPC_GNU_VTINHERIT", /* name */
1775 1.1 christos FALSE, /* partial_inplace */
1776 1.1 christos 0, /* src_mask */
1777 1.1 christos 0, /* dst_mask */
1778 1.1 christos FALSE), /* pcrel_offset */
1779 1.1 christos
1780 1.1 christos /* GNU extension to record C++ vtable member usage. */
1781 1.1 christos HOWTO (R_PPC_GNU_VTENTRY, /* type */
1782 1.1 christos 0, /* rightshift */
1783 1.1 christos 0, /* size (0 = byte, 1 = short, 2 = long) */
1784 1.1 christos 0, /* bitsize */
1785 1.1 christos FALSE, /* pc_relative */
1786 1.1 christos 0, /* bitpos */
1787 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1788 1.1 christos NULL, /* special_function */
1789 1.1 christos "R_PPC_GNU_VTENTRY", /* name */
1790 1.1 christos FALSE, /* partial_inplace */
1791 1.1 christos 0, /* src_mask */
1792 1.1 christos 0, /* dst_mask */
1793 1.1 christos FALSE), /* pcrel_offset */
1794 1.1 christos
1795 1.1 christos /* Phony reloc to handle AIX style TOC entries. */
1796 1.1 christos HOWTO (R_PPC_TOC16, /* type */
1797 1.1 christos 0, /* rightshift */
1798 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1799 1.1 christos 16, /* bitsize */
1800 1.1 christos FALSE, /* pc_relative */
1801 1.1 christos 0, /* bitpos */
1802 1.1.1.4 christos complain_overflow_signed, /* complain_on_overflow */
1803 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1804 1.1 christos "R_PPC_TOC16", /* name */
1805 1.1 christos FALSE, /* partial_inplace */
1806 1.1 christos 0, /* src_mask */
1807 1.1 christos 0xffff, /* dst_mask */
1808 1.1 christos FALSE), /* pcrel_offset */
1809 1.1 christos };
1810 1.1 christos
1811 1.1 christos /* External 32-bit PPC structure for PRPSINFO. This structure is
1812 1.1 christos ABI-defined, thus we choose to use char arrays here in order to
1813 1.1 christos avoid dealing with different types in different architectures.
1814 1.1 christos
1815 1.1 christos The PPC 32-bit structure uses int for `pr_uid' and `pr_gid' while
1816 1.1 christos most non-PPC architectures use `short int'.
1817 1.1 christos
1818 1.1 christos This structure will ultimately be written in the corefile's note
1819 1.1 christos section, as the PRPSINFO. */
1820 1.1 christos
1821 1.1 christos struct elf_external_ppc_linux_prpsinfo32
1822 1.1 christos {
1823 1.1 christos char pr_state; /* Numeric process state. */
1824 1.1 christos char pr_sname; /* Char for pr_state. */
1825 1.1 christos char pr_zomb; /* Zombie. */
1826 1.1 christos char pr_nice; /* Nice val. */
1827 1.1 christos char pr_flag[4]; /* Flags. */
1828 1.1 christos char pr_uid[4];
1829 1.1 christos char pr_gid[4];
1830 1.1 christos char pr_pid[4];
1831 1.1 christos char pr_ppid[4];
1832 1.1 christos char pr_pgrp[4];
1833 1.1 christos char pr_sid[4];
1834 1.1 christos char pr_fname[16]; /* Filename of executable. */
1835 1.1 christos char pr_psargs[80]; /* Initial part of arg list. */
1836 1.1 christos };
1837 1.1.1.4 christos
1838 1.1.1.4 christos /* Helper function to copy an elf_internal_linux_prpsinfo in host
1839 1.1 christos endian to an elf_external_ppc_linux_prpsinfo32 in target endian. */
1840 1.1.1.4 christos
1841 1.1.1.4 christos static inline void
1842 1.1.1.4 christos swap_ppc_linux_prpsinfo32_out (bfd *obfd,
1843 1.1.1.4 christos const struct elf_internal_linux_prpsinfo *from,
1844 1.1.1.4 christos struct elf_external_ppc_linux_prpsinfo32 *to)
1845 1.1.1.4 christos {
1846 1.1.1.4 christos bfd_put_8 (obfd, from->pr_state, &to->pr_state);
1847 1.1.1.4 christos bfd_put_8 (obfd, from->pr_sname, &to->pr_sname);
1848 1.1.1.4 christos bfd_put_8 (obfd, from->pr_zomb, &to->pr_zomb);
1849 1.1.1.4 christos bfd_put_8 (obfd, from->pr_nice, &to->pr_nice);
1850 1.1.1.4 christos bfd_put_32 (obfd, from->pr_flag, to->pr_flag);
1851 1.1.1.4 christos bfd_put_32 (obfd, from->pr_uid, to->pr_uid);
1852 1.1.1.4 christos bfd_put_32 (obfd, from->pr_gid, to->pr_gid);
1853 1.1.1.4 christos bfd_put_32 (obfd, from->pr_pid, to->pr_pid);
1854 1.1.1.4 christos bfd_put_32 (obfd, from->pr_ppid, to->pr_ppid);
1855 1.1.1.4 christos bfd_put_32 (obfd, from->pr_pgrp, to->pr_pgrp);
1856 1.1.1.4 christos bfd_put_32 (obfd, from->pr_sid, to->pr_sid);
1857 1.1.1.4 christos strncpy (to->pr_fname, from->pr_fname, sizeof (to->pr_fname));
1858 1.1.1.4 christos strncpy (to->pr_psargs, from->pr_psargs, sizeof (to->pr_psargs));
1859 1.1 christos }
1860 1.1 christos
1861 1.1 christos /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1863 1.1 christos
1864 1.1 christos static void
1865 1.1 christos ppc_elf_howto_init (void)
1866 1.1 christos {
1867 1.1 christos unsigned int i, type;
1868 1.1 christos
1869 1.1 christos for (i = 0;
1870 1.1 christos i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1871 1.1 christos i++)
1872 1.1 christos {
1873 1.1 christos type = ppc_elf_howto_raw[i].type;
1874 1.1 christos if (type >= (sizeof (ppc_elf_howto_table)
1875 1.1 christos / sizeof (ppc_elf_howto_table[0])))
1876 1.1 christos abort ();
1877 1.1 christos ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1878 1.1 christos }
1879 1.1 christos }
1880 1.1 christos
1881 1.1 christos static reloc_howto_type *
1882 1.1 christos ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1883 1.1 christos bfd_reloc_code_real_type code)
1884 1.1 christos {
1885 1.1 christos enum elf_ppc_reloc_type r;
1886 1.1 christos
1887 1.1 christos /* Initialize howto table if not already done. */
1888 1.1 christos if (!ppc_elf_howto_table[R_PPC_ADDR32])
1889 1.1 christos ppc_elf_howto_init ();
1890 1.1 christos
1891 1.1 christos switch (code)
1892 1.1 christos {
1893 1.1 christos default:
1894 1.1 christos return NULL;
1895 1.1 christos
1896 1.1 christos case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1897 1.1 christos case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1898 1.1 christos case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1899 1.1 christos case BFD_RELOC_PPC64_ADDR16_DS:
1900 1.1 christos case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1901 1.1 christos case BFD_RELOC_PPC64_ADDR16_LO_DS:
1902 1.1 christos case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1903 1.1 christos case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1904 1.1 christos case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1905 1.1 christos case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1906 1.1 christos case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1907 1.1 christos case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1908 1.1 christos case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1909 1.1 christos case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1910 1.1 christos case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1911 1.1 christos case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1912 1.1 christos case BFD_RELOC_PPC64_GOT16_DS:
1913 1.1 christos case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1914 1.1 christos case BFD_RELOC_PPC64_GOT16_LO_DS:
1915 1.1 christos case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1916 1.1 christos case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1917 1.1 christos case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1918 1.1 christos case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1919 1.1 christos case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1920 1.1 christos case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1921 1.1 christos case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1922 1.1 christos case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1923 1.1 christos case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1924 1.1 christos case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1925 1.1 christos case BFD_RELOC_PPC64_PLT16_LO_DS:
1926 1.1 christos case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1927 1.1 christos case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1928 1.1 christos case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1929 1.1 christos case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1930 1.1 christos case BFD_RELOC_PPC64_SECTOFF_DS:
1931 1.1 christos case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1932 1.1 christos case BFD_RELOC_PPC64_SECTOFF_LO_DS:
1933 1.1 christos case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1934 1.1 christos case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1935 1.1 christos case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1936 1.1 christos case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1937 1.1 christos case BFD_RELOC_PPC64_TOC16_DS:
1938 1.1 christos case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1939 1.1 christos case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1940 1.1 christos case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1941 1.1 christos case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1942 1.1 christos case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1943 1.1 christos case BFD_RELOC_PPC64_TPREL16_DS:
1944 1.1 christos case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1945 1.1 christos case BFD_RELOC_PPC64_TPREL16_LO_DS:
1946 1.1 christos case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1947 1.1 christos case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1948 1.1 christos case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1949 1.1 christos case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1950 1.1 christos case BFD_RELOC_PPC64_DTPREL16_DS:
1951 1.1 christos case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1952 1.1 christos case BFD_RELOC_PPC64_DTPREL16_LO_DS:
1953 1.1 christos case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1954 1.1 christos case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1955 1.1 christos case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1956 1.1 christos case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1957 1.1 christos case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1958 1.1 christos case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1959 1.1 christos case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1960 1.1 christos case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1961 1.1 christos case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1962 1.1 christos case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1963 1.1 christos case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1964 1.1 christos case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1965 1.1 christos case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1966 1.1 christos case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1967 1.1 christos case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1968 1.1 christos case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1969 1.1 christos case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1970 1.1 christos case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1971 1.1 christos case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1972 1.1 christos case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1973 1.1 christos case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1974 1.1 christos case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1975 1.1 christos case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1976 1.1 christos case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1977 1.1 christos case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1978 1.1 christos case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1979 1.1 christos case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1980 1.1 christos case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1981 1.1 christos case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1982 1.1 christos case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1983 1.1 christos case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1984 1.1 christos case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1985 1.1 christos case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1986 1.1 christos case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1987 1.1 christos case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1988 1.1 christos case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1989 1.1 christos case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1990 1.1 christos case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1991 1.1 christos case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1992 1.1 christos case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1993 1.1 christos case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1994 1.1 christos case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1995 1.1 christos case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1996 1.1 christos case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1997 1.1 christos case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1998 1.1 christos case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1999 1.1 christos case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
2000 1.1 christos case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
2001 1.1 christos r = R_PPC_VLE_SDAREL_LO16A;
2002 1.1 christos break;
2003 1.1 christos case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
2004 1.1 christos r = R_PPC_VLE_SDAREL_LO16D;
2005 1.1 christos break;
2006 1.1 christos case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
2007 1.1 christos r = R_PPC_VLE_SDAREL_HI16A;
2008 1.1 christos break;
2009 1.1 christos case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
2010 1.1 christos r = R_PPC_VLE_SDAREL_HI16D;
2011 1.1 christos break;
2012 1.1 christos case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
2013 1.1 christos r = R_PPC_VLE_SDAREL_HA16A;
2014 1.1 christos break;
2015 1.1 christos case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
2016 1.1 christos r = R_PPC_VLE_SDAREL_HA16D;
2017 1.1 christos break;
2018 1.1 christos case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
2019 1.1 christos case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
2020 1.1.1.5 christos case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
2021 1.1.1.4 christos case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
2022 1.1 christos case BFD_RELOC_PPC_16DX_HA: r = R_PPC_16DX_HA; break;
2023 1.1 christos case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC_REL16DX_HA; break;
2024 1.1 christos case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
2025 1.1 christos case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
2026 1.1 christos }
2027 1.1 christos
2028 1.1 christos return ppc_elf_howto_table[r];
2029 1.1 christos };
2030 1.1 christos
2031 1.1 christos static reloc_howto_type *
2032 1.1 christos ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2033 1.1 christos const char *r_name)
2034 1.1 christos {
2035 1.1 christos unsigned int i;
2036 1.1 christos
2037 1.1 christos for (i = 0;
2038 1.1 christos i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2039 1.1 christos i++)
2040 1.1 christos if (ppc_elf_howto_raw[i].name != NULL
2041 1.1 christos && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2042 1.1 christos return &ppc_elf_howto_raw[i];
2043 1.1 christos
2044 1.1 christos return NULL;
2045 1.1 christos }
2046 1.1 christos
2047 1.1 christos /* Set the howto pointer for a PowerPC ELF reloc. */
2048 1.1.1.5 christos
2049 1.1 christos static void
2050 1.1 christos ppc_elf_info_to_howto (bfd *abfd,
2051 1.1 christos arelent *cache_ptr,
2052 1.1.1.3 christos Elf_Internal_Rela *dst)
2053 1.1.1.3 christos {
2054 1.1 christos unsigned int r_type;
2055 1.1 christos
2056 1.1 christos /* Initialize howto table if not already done. */
2057 1.1 christos if (!ppc_elf_howto_table[R_PPC_ADDR32])
2058 1.1.1.3 christos ppc_elf_howto_init ();
2059 1.1.1.3 christos
2060 1.1.1.3 christos r_type = ELF32_R_TYPE (dst->r_info);
2061 1.1.1.5 christos if (r_type >= R_PPC_max)
2062 1.1.1.5 christos {
2063 1.1.1.5 christos /* xgettext:c-format */
2064 1.1.1.3 christos _bfd_error_handler (_("%B: unrecognised PPC reloc number: %d"),
2065 1.1.1.3 christos abfd, r_type);
2066 1.1.1.3 christos bfd_set_error (bfd_error_bad_value);
2067 1.1.1.3 christos r_type = R_PPC_NONE;
2068 1.1 christos }
2069 1.1 christos cache_ptr->howto = ppc_elf_howto_table[r_type];
2070 1.1 christos
2071 1.1 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 1.1.1.5 christos if (!cache_ptr->howto)
2074 1.1.1.5 christos {
2075 1.1.1.5 christos /* xgettext:c-format */
2076 1.1 christos _bfd_error_handler (_("%B: invalid relocation type %d"),
2077 1.1 christos abfd, r_type);
2078 1.1 christos bfd_set_error (bfd_error_bad_value);
2079 1.1 christos
2080 1.1 christos cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
2081 1.1 christos }
2082 1.1 christos }
2083 1.1 christos
2084 1.1 christos /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2085 1.1.1.5 christos
2086 1.1 christos static bfd_reloc_status_type
2087 1.1 christos ppc_elf_addr16_ha_reloc (bfd *abfd,
2088 1.1.1.5 christos arelent *reloc_entry,
2089 1.1 christos asymbol *symbol,
2090 1.1 christos void *data,
2091 1.1 christos asection *input_section,
2092 1.1 christos bfd *output_bfd,
2093 1.1.1.4 christos char **error_message ATTRIBUTE_UNUSED)
2094 1.1.1.4 christos {
2095 1.1.1.4 christos enum elf_ppc_reloc_type r_type;
2096 1.1.1.4 christos long insn;
2097 1.1 christos bfd_size_type octets;
2098 1.1 christos bfd_vma value;
2099 1.1 christos
2100 1.1 christos if (output_bfd != NULL)
2101 1.1 christos {
2102 1.1 christos reloc_entry->address += input_section->output_offset;
2103 1.1 christos return bfd_reloc_ok;
2104 1.1.1.4 christos }
2105 1.1.1.4 christos
2106 1.1.1.4 christos reloc_entry->addend += 0x8000;
2107 1.1.1.4 christos r_type = reloc_entry->howto->type;
2108 1.1.1.4 christos if (r_type != R_PPC_REL16DX_HA)
2109 1.1.1.4 christos return bfd_reloc_continue;
2110 1.1.1.4 christos
2111 1.1.1.4 christos value = 0;
2112 1.1.1.4 christos if (!bfd_is_com_section (symbol->section))
2113 1.1.1.4 christos value = symbol->value;
2114 1.1.1.4 christos value += (reloc_entry->addend
2115 1.1.1.4 christos + symbol->section->output_offset
2116 1.1.1.4 christos + symbol->section->output_section->vma);
2117 1.1.1.4 christos value -= (reloc_entry->address
2118 1.1.1.4 christos + input_section->output_offset
2119 1.1.1.4 christos + input_section->output_section->vma);
2120 1.1.1.4 christos value >>= 16;
2121 1.1.1.4 christos
2122 1.1.1.4 christos octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2123 1.1.1.4 christos insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2124 1.1.1.4 christos insn &= ~0x1fffc1;
2125 1.1.1.4 christos insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2126 1.1 christos bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2127 1.1 christos return bfd_reloc_ok;
2128 1.1 christos }
2129 1.1 christos
2130 1.1 christos static bfd_reloc_status_type
2131 1.1 christos ppc_elf_unhandled_reloc (bfd *abfd,
2132 1.1 christos arelent *reloc_entry,
2133 1.1 christos asymbol *symbol,
2134 1.1 christos void *data,
2135 1.1 christos asection *input_section,
2136 1.1 christos bfd *output_bfd,
2137 1.1 christos char **error_message)
2138 1.1 christos {
2139 1.1 christos /* If this is a relocatable link (output_bfd test tells us), just
2140 1.1 christos call the generic function. Any adjustment will be done at final
2141 1.1 christos link time. */
2142 1.1 christos if (output_bfd != NULL)
2143 1.1 christos return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2144 1.1 christos input_section, output_bfd, error_message);
2145 1.1 christos
2146 1.1 christos if (error_message != NULL)
2147 1.1 christos {
2148 1.1 christos static char buf[60];
2149 1.1 christos sprintf (buf, _("generic linker can't handle %s"),
2150 1.1 christos reloc_entry->howto->name);
2151 1.1 christos *error_message = buf;
2152 1.1 christos }
2153 1.1 christos return bfd_reloc_dangerous;
2154 1.1 christos }
2155 1.1 christos
2156 1.1 christos /* Sections created by the linker. */
2158 1.1 christos
2159 1.1 christos typedef struct elf_linker_section
2160 1.1 christos {
2161 1.1 christos /* Pointer to the bfd section. */
2162 1.1 christos asection *section;
2163 1.1 christos /* Section name. */
2164 1.1 christos const char *name;
2165 1.1 christos /* Associated bss section name. */
2166 1.1 christos const char *bss_name;
2167 1.1 christos /* Associated symbol name. */
2168 1.1 christos const char *sym_name;
2169 1.1 christos /* Associated symbol. */
2170 1.1 christos struct elf_link_hash_entry *sym;
2171 1.1 christos } elf_linker_section_t;
2172 1.1 christos
2173 1.1 christos /* Linked list of allocated pointer entries. This hangs off of the
2174 1.1 christos symbol lists, and provides allows us to return different pointers,
2175 1.1 christos based on different addend's. */
2176 1.1 christos
2177 1.1 christos typedef struct elf_linker_section_pointers
2178 1.1 christos {
2179 1.1 christos /* next allocated pointer for this symbol */
2180 1.1 christos struct elf_linker_section_pointers *next;
2181 1.1 christos /* offset of pointer from beginning of section */
2182 1.1 christos bfd_vma offset;
2183 1.1 christos /* addend used */
2184 1.1 christos bfd_vma addend;
2185 1.1 christos /* which linker section this is */
2186 1.1 christos elf_linker_section_t *lsect;
2187 1.1 christos } elf_linker_section_pointers_t;
2188 1.1 christos
2189 1.1 christos struct ppc_elf_obj_tdata
2190 1.1 christos {
2191 1.1 christos struct elf_obj_tdata elf;
2192 1.1 christos
2193 1.1 christos /* A mapping from local symbols to offsets into the various linker
2194 1.1 christos sections added. This is index by the symbol index. */
2195 1.1 christos elf_linker_section_pointers_t **linker_section_pointers;
2196 1.1 christos
2197 1.1 christos /* Flags used to auto-detect plt type. */
2198 1.1 christos unsigned int makes_plt_call : 1;
2199 1.1 christos unsigned int has_rel16 : 1;
2200 1.1 christos };
2201 1.1 christos
2202 1.1 christos #define ppc_elf_tdata(bfd) \
2203 1.1 christos ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2204 1.1 christos
2205 1.1 christos #define elf_local_ptr_offsets(bfd) \
2206 1.1 christos (ppc_elf_tdata (bfd)->linker_section_pointers)
2207 1.1 christos
2208 1.1 christos #define is_ppc_elf(bfd) \
2209 1.1 christos (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2210 1.1 christos && elf_object_id (bfd) == PPC32_ELF_DATA)
2211 1.1 christos
2212 1.1 christos /* Override the generic function because we store some extras. */
2213 1.1 christos
2214 1.1 christos static bfd_boolean
2215 1.1 christos ppc_elf_mkobject (bfd *abfd)
2216 1.1 christos {
2217 1.1 christos return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
2218 1.1.1.4 christos PPC32_ELF_DATA);
2219 1.1.1.4 christos }
2220 1.1.1.4 christos
2221 1.1.1.4 christos /* When defaulting arch/mach, decode apuinfo to find a better match. */
2222 1.1.1.4 christos
2223 1.1.1.4 christos bfd_boolean
2224 1.1.1.4 christos _bfd_elf_ppc_set_arch (bfd *abfd)
2225 1.1.1.4 christos {
2226 1.1.1.4 christos unsigned long mach = 0;
2227 1.1.1.4 christos asection *s;
2228 1.1.1.4 christos unsigned char *contents;
2229 1.1.1.4 christos
2230 1.1.1.4 christos if (abfd->arch_info->bits_per_word == 32
2231 1.1.1.4 christos && bfd_big_endian (abfd))
2232 1.1.1.4 christos {
2233 1.1.1.4 christos
2234 1.1.1.4 christos for (s = abfd->sections; s != NULL; s = s->next)
2235 1.1.1.4 christos if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0)
2236 1.1.1.4 christos break;
2237 1.1.1.4 christos if (s != NULL)
2238 1.1.1.4 christos mach = bfd_mach_ppc_vle;
2239 1.1.1.4 christos }
2240 1.1.1.4 christos
2241 1.1.1.4 christos if (mach == 0)
2242 1.1.1.4 christos {
2243 1.1.1.4 christos s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2244 1.1.1.4 christos if (s != NULL && bfd_malloc_and_get_section (abfd, s, &contents))
2245 1.1.1.4 christos {
2246 1.1.1.4 christos unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4);
2247 1.1.1.4 christos unsigned int i;
2248 1.1.1.4 christos
2249 1.1.1.4 christos for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4)
2250 1.1.1.4 christos {
2251 1.1.1.4 christos unsigned int val = bfd_get_32 (abfd, contents + i);
2252 1.1.1.4 christos switch (val >> 16)
2253 1.1.1.4 christos {
2254 1.1.1.4 christos case PPC_APUINFO_PMR:
2255 1.1.1.4 christos case PPC_APUINFO_RFMCI:
2256 1.1.1.4 christos if (mach == 0)
2257 1.1.1.4 christos mach = bfd_mach_ppc_titan;
2258 1.1.1.4 christos break;
2259 1.1.1.4 christos
2260 1.1.1.4 christos case PPC_APUINFO_ISEL:
2261 1.1.1.4 christos case PPC_APUINFO_CACHELCK:
2262 1.1.1.4 christos if (mach == bfd_mach_ppc_titan)
2263 1.1.1.4 christos mach = bfd_mach_ppc_e500mc;
2264 1.1.1.4 christos break;
2265 1.1.1.4 christos
2266 1.1.1.4 christos case PPC_APUINFO_SPE:
2267 1.1.1.4 christos case PPC_APUINFO_EFS:
2268 1.1.1.5 christos case PPC_APUINFO_BRLOCK:
2269 1.1.1.4 christos if (mach != bfd_mach_ppc_vle)
2270 1.1.1.4 christos mach = bfd_mach_ppc_e500;
2271 1.1.1.4 christos break;
2272 1.1.1.4 christos
2273 1.1.1.4 christos case PPC_APUINFO_VLE:
2274 1.1.1.4 christos mach = bfd_mach_ppc_vle;
2275 1.1.1.4 christos break;
2276 1.1.1.4 christos
2277 1.1.1.4 christos default:
2278 1.1.1.4 christos mach = -1ul;
2279 1.1.1.4 christos }
2280 1.1.1.4 christos }
2281 1.1.1.4 christos free (contents);
2282 1.1.1.4 christos }
2283 1.1.1.4 christos }
2284 1.1.1.4 christos
2285 1.1.1.4 christos if (mach != 0 && mach != -1ul)
2286 1.1.1.4 christos {
2287 1.1.1.4 christos const bfd_arch_info_type *arch;
2288 1.1.1.4 christos
2289 1.1.1.4 christos for (arch = abfd->arch_info->next; arch; arch = arch->next)
2290 1.1.1.4 christos if (arch->mach == mach)
2291 1.1.1.4 christos {
2292 1.1.1.4 christos abfd->arch_info = arch;
2293 1.1.1.4 christos break;
2294 1.1.1.4 christos }
2295 1.1.1.4 christos }
2296 1.1 christos return TRUE;
2297 1.1.1.4 christos }
2298 1.1 christos
2299 1.1 christos /* Fix bad default arch selected for a 32 bit input bfd when the
2300 1.1 christos default is 64 bit. Also select arch based on apuinfo. */
2301 1.1 christos
2302 1.1.1.4 christos static bfd_boolean
2303 1.1.1.4 christos ppc_elf_object_p (bfd *abfd)
2304 1.1.1.4 christos {
2305 1.1.1.4 christos if (!abfd->arch_info->the_default)
2306 1.1 christos return TRUE;
2307 1.1 christos
2308 1.1 christos if (abfd->arch_info->bits_per_word == 64)
2309 1.1 christos {
2310 1.1 christos Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2311 1.1 christos
2312 1.1 christos if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2313 1.1 christos {
2314 1.1 christos /* Relies on arch after 64 bit default being 32 bit default. */
2315 1.1 christos abfd->arch_info = abfd->arch_info->next;
2316 1.1.1.4 christos BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2317 1.1 christos }
2318 1.1 christos }
2319 1.1 christos return _bfd_elf_ppc_set_arch (abfd);
2320 1.1 christos }
2321 1.1 christos
2322 1.1 christos /* Function to set whether a module needs the -mrelocatable bit set. */
2323 1.1 christos
2324 1.1 christos static bfd_boolean
2325 1.1 christos ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2326 1.1 christos {
2327 1.1 christos BFD_ASSERT (!elf_flags_init (abfd)
2328 1.1 christos || elf_elfheader (abfd)->e_flags == flags);
2329 1.1 christos
2330 1.1 christos elf_elfheader (abfd)->e_flags = flags;
2331 1.1 christos elf_flags_init (abfd) = TRUE;
2332 1.1 christos return TRUE;
2333 1.1 christos }
2334 1.1 christos
2335 1.1 christos /* Support for core dump NOTE sections. */
2336 1.1 christos
2337 1.1 christos static bfd_boolean
2338 1.1 christos ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2339 1.1 christos {
2340 1.1 christos int offset;
2341 1.1 christos unsigned int size;
2342 1.1 christos
2343 1.1 christos switch (note->descsz)
2344 1.1 christos {
2345 1.1 christos default:
2346 1.1 christos return FALSE;
2347 1.1 christos
2348 1.1 christos case 268: /* Linux/PPC. */
2349 1.1 christos /* pr_cursig */
2350 1.1 christos elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2351 1.1 christos
2352 1.1 christos /* pr_pid */
2353 1.1 christos elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2354 1.1 christos
2355 1.1 christos /* pr_reg */
2356 1.1 christos offset = 72;
2357 1.1 christos size = 192;
2358 1.1 christos
2359 1.1 christos break;
2360 1.1 christos }
2361 1.1 christos
2362 1.1 christos /* Make a ".reg/999" section. */
2363 1.1 christos return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2364 1.1 christos size, note->descpos + offset);
2365 1.1 christos }
2366 1.1 christos
2367 1.1 christos static bfd_boolean
2368 1.1 christos ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2369 1.1 christos {
2370 1.1 christos switch (note->descsz)
2371 1.1 christos {
2372 1.1 christos default:
2373 1.1 christos return FALSE;
2374 1.1 christos
2375 1.1 christos case 128: /* Linux/PPC elf_prpsinfo. */
2376 1.1 christos elf_tdata (abfd)->core->pid
2377 1.1 christos = bfd_get_32 (abfd, note->descdata + 16);
2378 1.1 christos elf_tdata (abfd)->core->program
2379 1.1 christos = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2380 1.1 christos elf_tdata (abfd)->core->command
2381 1.1 christos = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2382 1.1 christos }
2383 1.1 christos
2384 1.1 christos /* Note that for some reason, a spurious space is tacked
2385 1.1 christos onto the end of the args in some (at least one anyway)
2386 1.1 christos implementations, so strip it off if it exists. */
2387 1.1 christos
2388 1.1 christos {
2389 1.1 christos char *command = elf_tdata (abfd)->core->command;
2390 1.1 christos int n = strlen (command);
2391 1.1 christos
2392 1.1 christos if (0 < n && command[n - 1] == ' ')
2393 1.1 christos command[n - 1] = '\0';
2394 1.1 christos }
2395 1.1 christos
2396 1.1 christos return TRUE;
2397 1.1.1.4 christos }
2398 1.1.1.4 christos
2399 1.1.1.4 christos char *
2400 1.1.1.4 christos elfcore_write_ppc_linux_prpsinfo32
2401 1.1.1.4 christos (bfd *abfd,
2402 1.1 christos char *buf,
2403 1.1 christos int *bufsiz,
2404 1.1 christos const struct elf_internal_linux_prpsinfo *prpsinfo)
2405 1.1.1.4 christos {
2406 1.1 christos struct elf_external_ppc_linux_prpsinfo32 data;
2407 1.1 christos
2408 1.1 christos swap_ppc_linux_prpsinfo32_out (abfd, prpsinfo, &data);
2409 1.1 christos return elfcore_write_note (abfd, buf, bufsiz,
2410 1.1 christos "CORE", NT_PRPSINFO, &data, sizeof (data));
2411 1.1 christos }
2412 1.1 christos
2413 1.1 christos static char *
2414 1.1 christos ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2415 1.1 christos {
2416 1.1 christos switch (note_type)
2417 1.1 christos {
2418 1.1 christos default:
2419 1.1 christos return NULL;
2420 1.1 christos
2421 1.1 christos case NT_PRPSINFO:
2422 1.1 christos {
2423 1.1 christos char data[128];
2424 1.1 christos va_list ap;
2425 1.1 christos
2426 1.1 christos va_start (ap, note_type);
2427 1.1 christos memset (data, 0, sizeof (data));
2428 1.1 christos strncpy (data + 32, va_arg (ap, const char *), 16);
2429 1.1 christos strncpy (data + 48, va_arg (ap, const char *), 80);
2430 1.1 christos va_end (ap);
2431 1.1 christos return elfcore_write_note (abfd, buf, bufsiz,
2432 1.1 christos "CORE", note_type, data, sizeof (data));
2433 1.1 christos }
2434 1.1 christos
2435 1.1 christos case NT_PRSTATUS:
2436 1.1 christos {
2437 1.1 christos char data[268];
2438 1.1 christos va_list ap;
2439 1.1 christos long pid;
2440 1.1 christos int cursig;
2441 1.1 christos const void *greg;
2442 1.1 christos
2443 1.1 christos va_start (ap, note_type);
2444 1.1 christos memset (data, 0, 72);
2445 1.1 christos pid = va_arg (ap, long);
2446 1.1 christos bfd_put_32 (abfd, pid, data + 24);
2447 1.1 christos cursig = va_arg (ap, int);
2448 1.1 christos bfd_put_16 (abfd, cursig, data + 12);
2449 1.1 christos greg = va_arg (ap, const void *);
2450 1.1 christos memcpy (data + 72, greg, 192);
2451 1.1 christos memset (data + 264, 0, 4);
2452 1.1 christos va_end (ap);
2453 1.1 christos return elfcore_write_note (abfd, buf, bufsiz,
2454 1.1 christos "CORE", note_type, data, sizeof (data));
2455 1.1 christos }
2456 1.1 christos }
2457 1.1 christos }
2458 1.1 christos
2459 1.1 christos static flagword
2460 1.1 christos ppc_elf_lookup_section_flags (char *flag_name)
2461 1.1 christos {
2462 1.1 christos
2463 1.1 christos if (!strcmp (flag_name, "SHF_PPC_VLE"))
2464 1.1 christos return SHF_PPC_VLE;
2465 1.1 christos
2466 1.1 christos return 0;
2467 1.1 christos }
2468 1.1 christos
2469 1.1 christos /* Return address for Ith PLT stub in section PLT, for relocation REL
2470 1.1 christos or (bfd_vma) -1 if it should not be included. */
2471 1.1 christos
2472 1.1 christos static bfd_vma
2473 1.1 christos ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2474 1.1 christos const asection *plt ATTRIBUTE_UNUSED,
2475 1.1 christos const arelent *rel)
2476 1.1 christos {
2477 1.1 christos return rel->address;
2478 1.1 christos }
2479 1.1 christos
2480 1.1 christos /* Handle a PowerPC specific section when reading an object file. This
2481 1.1 christos is called when bfd_section_from_shdr finds a section with an unknown
2482 1.1 christos type. */
2483 1.1 christos
2484 1.1 christos static bfd_boolean
2485 1.1 christos ppc_elf_section_from_shdr (bfd *abfd,
2486 1.1 christos Elf_Internal_Shdr *hdr,
2487 1.1 christos const char *name,
2488 1.1 christos int shindex)
2489 1.1 christos {
2490 1.1 christos asection *newsect;
2491 1.1 christos flagword flags;
2492 1.1 christos
2493 1.1 christos if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2494 1.1 christos return FALSE;
2495 1.1 christos
2496 1.1 christos newsect = hdr->bfd_section;
2497 1.1 christos flags = bfd_get_section_flags (abfd, newsect);
2498 1.1 christos if (hdr->sh_flags & SHF_EXCLUDE)
2499 1.1 christos flags |= SEC_EXCLUDE;
2500 1.1 christos
2501 1.1 christos if (hdr->sh_type == SHT_ORDERED)
2502 1.1 christos flags |= SEC_SORT_ENTRIES;
2503 1.1 christos
2504 1.1 christos bfd_set_section_flags (abfd, newsect, flags);
2505 1.1 christos return TRUE;
2506 1.1 christos }
2507 1.1 christos
2508 1.1 christos /* Set up any other section flags and such that may be necessary. */
2509 1.1 christos
2510 1.1 christos static bfd_boolean
2511 1.1 christos ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2512 1.1 christos Elf_Internal_Shdr *shdr,
2513 1.1 christos asection *asect)
2514 1.1 christos {
2515 1.1 christos if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2516 1.1 christos shdr->sh_type = SHT_ORDERED;
2517 1.1 christos
2518 1.1 christos return TRUE;
2519 1.1 christos }
2520 1.1 christos
2521 1.1 christos /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2522 1.1 christos need to bump up the number of section headers. */
2523 1.1 christos
2524 1.1 christos static int
2525 1.1 christos ppc_elf_additional_program_headers (bfd *abfd,
2526 1.1 christos struct bfd_link_info *info ATTRIBUTE_UNUSED)
2527 1.1 christos {
2528 1.1 christos asection *s;
2529 1.1 christos int ret = 0;
2530 1.1 christos
2531 1.1 christos s = bfd_get_section_by_name (abfd, ".sbss2");
2532 1.1 christos if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2533 1.1 christos ++ret;
2534 1.1 christos
2535 1.1 christos s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2536 1.1 christos if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2537 1.1 christos ++ret;
2538 1.1 christos
2539 1.1 christos return ret;
2540 1.1 christos }
2541 1.1 christos
2542 1.1 christos /* Modify the segment map for VLE executables. */
2543 1.1 christos
2544 1.1 christos bfd_boolean
2545 1.1.1.5 christos ppc_elf_modify_segment_map (bfd *abfd,
2546 1.1 christos struct bfd_link_info *info ATTRIBUTE_UNUSED)
2547 1.1 christos {
2548 1.1 christos struct elf_segment_map *m;
2549 1.1 christos
2550 1.1 christos /* At this point in the link, output sections have already been sorted by
2551 1.1 christos LMA and assigned to segments. All that is left to do is to ensure
2552 1.1 christos there is no mixing of VLE & non-VLE sections in a text segment.
2553 1.1 christos If we find that case, we split the segment.
2554 1.1 christos We maintain the original output section order. */
2555 1.1.1.5 christos
2556 1.1.1.5 christos for (m = elf_seg_map (abfd); m != NULL; m = m->next)
2557 1.1.1.5 christos {
2558 1.1.1.5 christos struct elf_segment_map *n;
2559 1.1.1.5 christos bfd_size_type amt;
2560 1.1.1.5 christos unsigned int j, k;
2561 1.1 christos unsigned int p_flags;
2562 1.1 christos
2563 1.1.1.5 christos if (m->p_type != PT_LOAD || m->count == 0)
2564 1.1 christos continue;
2565 1.1.1.5 christos
2566 1.1.1.5 christos for (p_flags = PF_R, j = 0; j != m->count; ++j)
2567 1.1.1.5 christos {
2568 1.1.1.5 christos if ((m->sections[j]->flags & SEC_READONLY) == 0)
2569 1.1.1.5 christos p_flags |= PF_W;
2570 1.1.1.5 christos if ((m->sections[j]->flags & SEC_CODE) != 0)
2571 1.1.1.5 christos {
2572 1.1.1.5 christos p_flags |= PF_X;
2573 1.1.1.5 christos if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2574 1.1.1.5 christos p_flags |= PF_PPC_VLE;
2575 1.1.1.5 christos break;
2576 1.1.1.5 christos }
2577 1.1.1.5 christos }
2578 1.1.1.5 christos if (j != m->count)
2579 1.1 christos while (++j != m->count)
2580 1.1.1.5 christos {
2581 1.1.1.5 christos unsigned int p_flags1 = PF_R;
2582 1.1.1.5 christos
2583 1.1.1.5 christos if ((m->sections[j]->flags & SEC_READONLY) == 0)
2584 1.1.1.5 christos p_flags1 |= PF_W;
2585 1.1.1.5 christos if ((m->sections[j]->flags & SEC_CODE) != 0)
2586 1.1.1.5 christos {
2587 1.1.1.5 christos p_flags1 |= PF_X;
2588 1.1.1.5 christos if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2589 1.1.1.5 christos p_flags1 |= PF_PPC_VLE;
2590 1.1.1.5 christos if (((p_flags1 ^ p_flags) & PF_PPC_VLE) != 0)
2591 1.1.1.5 christos break;
2592 1.1.1.5 christos }
2593 1.1.1.5 christos p_flags |= p_flags1;
2594 1.1.1.5 christos }
2595 1.1.1.5 christos /* If we're splitting a segment which originally contained rw
2596 1.1.1.5 christos sections then those sections might now only be in one of the
2597 1.1.1.5 christos two parts. So always set p_flags if splitting, even if we
2598 1.1.1.5 christos are being called for objcopy with p_flags_valid set. */
2599 1.1.1.5 christos if (j != m->count || !m->p_flags_valid)
2600 1.1.1.5 christos {
2601 1.1.1.5 christos m->p_flags_valid = 1;
2602 1.1 christos m->p_flags = p_flags;
2603 1.1 christos }
2604 1.1.1.5 christos if (j == m->count)
2605 1.1 christos continue;
2606 1.1 christos
2607 1.1 christos /* Sections 0..j-1 stay in this (current) segment,
2608 1.1 christos the remainder are put in a new segment.
2609 1.1 christos The scan resumes with the new segment. */
2610 1.1 christos
2611 1.1 christos amt = sizeof (struct elf_segment_map);
2612 1.1 christos amt += (m->count - j - 1) * sizeof (asection *);
2613 1.1 christos n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2614 1.1 christos if (n == NULL)
2615 1.1 christos return FALSE;
2616 1.1 christos
2617 1.1.1.5 christos n->p_type = PT_LOAD;
2618 1.1.1.5 christos n->count = m->count - j;
2619 1.1.1.5 christos for (k = 0; k < n->count; ++k)
2620 1.1 christos n->sections[k] = m->sections[j + k];
2621 1.1 christos m->count = j;
2622 1.1 christos m->p_size_valid = 0;
2623 1.1 christos n->next = m->next;
2624 1.1 christos m->next = n;
2625 1.1 christos }
2626 1.1 christos
2627 1.1 christos return TRUE;
2628 1.1 christos }
2629 1.1 christos
2630 1.1 christos /* Add extra PPC sections -- Note, for now, make .sbss2 and
2631 1.1 christos .PPC.EMB.sbss0 a normal section, and not a bss section so
2632 1.1 christos that the linker doesn't crater when trying to make more than
2633 1.1 christos 2 sections. */
2634 1.1.1.4 christos
2635 1.1.1.4 christos static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2636 1.1.1.4 christos {
2637 1.1.1.4 christos { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2638 1.1.1.4 christos { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2639 1.1.1.4 christos { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2640 1.1.1.4 christos { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2641 1.1.1.4 christos { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2642 1.1.1.4 christos { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2643 1.1.1.4 christos { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 },
2644 1.1 christos { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2645 1.1 christos { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2646 1.1 christos { NULL, 0, 0, 0, 0 }
2647 1.1 christos };
2648 1.1 christos
2649 1.1 christos /* This is what we want for new plt/got. */
2650 1.1 christos static struct bfd_elf_special_section ppc_alt_plt =
2651 1.1.1.5 christos { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2652 1.1 christos
2653 1.1 christos static const struct bfd_elf_special_section *
2654 1.1 christos ppc_elf_get_sec_type_attr (bfd *abfd, asection *sec)
2655 1.1 christos {
2656 1.1 christos const struct bfd_elf_special_section *ssect;
2657 1.1 christos
2658 1.1 christos /* See if this is one of the special sections. */
2659 1.1 christos if (sec->name == NULL)
2660 1.1 christos return NULL;
2661 1.1 christos
2662 1.1 christos ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2663 1.1 christos sec->use_rela_p);
2664 1.1 christos if (ssect != NULL)
2665 1.1 christos {
2666 1.1 christos if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2667 1.1 christos ssect = &ppc_alt_plt;
2668 1.1 christos return ssect;
2669 1.1 christos }
2670 1.1 christos
2671 1.1 christos return _bfd_elf_get_sec_type_attr (abfd, sec);
2672 1.1 christos }
2673 1.1 christos
2674 1.1 christos /* Very simple linked list structure for recording apuinfo values. */
2676 1.1 christos typedef struct apuinfo_list
2677 1.1 christos {
2678 1.1 christos struct apuinfo_list *next;
2679 1.1 christos unsigned long value;
2680 1.1 christos }
2681 1.1 christos apuinfo_list;
2682 1.1 christos
2683 1.1 christos static apuinfo_list *head;
2684 1.1 christos static bfd_boolean apuinfo_set;
2685 1.1 christos
2686 1.1 christos static void
2687 1.1 christos apuinfo_list_init (void)
2688 1.1 christos {
2689 1.1 christos head = NULL;
2690 1.1 christos apuinfo_set = FALSE;
2691 1.1 christos }
2692 1.1 christos
2693 1.1 christos static void
2694 1.1 christos apuinfo_list_add (unsigned long value)
2695 1.1 christos {
2696 1.1 christos apuinfo_list *entry = head;
2697 1.1 christos
2698 1.1 christos while (entry != NULL)
2699 1.1 christos {
2700 1.1 christos if (entry->value == value)
2701 1.1 christos return;
2702 1.1 christos entry = entry->next;
2703 1.1 christos }
2704 1.1 christos
2705 1.1 christos entry = bfd_malloc (sizeof (* entry));
2706 1.1 christos if (entry == NULL)
2707 1.1 christos return;
2708 1.1 christos
2709 1.1 christos entry->value = value;
2710 1.1 christos entry->next = head;
2711 1.1 christos head = entry;
2712 1.1 christos }
2713 1.1 christos
2714 1.1 christos static unsigned
2715 1.1 christos apuinfo_list_length (void)
2716 1.1 christos {
2717 1.1 christos apuinfo_list *entry;
2718 1.1 christos unsigned long count;
2719 1.1 christos
2720 1.1 christos for (entry = head, count = 0;
2721 1.1 christos entry;
2722 1.1 christos entry = entry->next)
2723 1.1 christos ++ count;
2724 1.1 christos
2725 1.1 christos return count;
2726 1.1 christos }
2727 1.1 christos
2728 1.1 christos static inline unsigned long
2729 1.1 christos apuinfo_list_element (unsigned long number)
2730 1.1 christos {
2731 1.1 christos apuinfo_list * entry;
2732 1.1 christos
2733 1.1 christos for (entry = head;
2734 1.1 christos entry && number --;
2735 1.1 christos entry = entry->next)
2736 1.1 christos ;
2737 1.1 christos
2738 1.1 christos return entry ? entry->value : 0;
2739 1.1 christos }
2740 1.1 christos
2741 1.1 christos static void
2742 1.1 christos apuinfo_list_finish (void)
2743 1.1 christos {
2744 1.1 christos apuinfo_list *entry;
2745 1.1 christos
2746 1.1 christos for (entry = head; entry;)
2747 1.1 christos {
2748 1.1 christos apuinfo_list *next = entry->next;
2749 1.1 christos free (entry);
2750 1.1 christos entry = next;
2751 1.1 christos }
2752 1.1 christos
2753 1.1 christos head = NULL;
2754 1.1 christos }
2755 1.1 christos
2756 1.1 christos /* Scan the input BFDs and create a linked list of
2757 1.1 christos the APUinfo values that will need to be emitted. */
2758 1.1 christos
2759 1.1 christos static void
2760 1.1 christos ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2761 1.1 christos {
2762 1.1 christos bfd *ibfd;
2763 1.1 christos asection *asec;
2764 1.1 christos char *buffer = NULL;
2765 1.1 christos bfd_size_type largest_input_size = 0;
2766 1.1 christos unsigned i;
2767 1.1 christos unsigned long length;
2768 1.1 christos const char *error_message = NULL;
2769 1.1 christos
2770 1.1 christos if (link_info == NULL)
2771 1.1 christos return;
2772 1.1.1.2 christos
2773 1.1 christos apuinfo_list_init ();
2774 1.1 christos
2775 1.1 christos /* Read in the input sections contents. */
2776 1.1 christos for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
2777 1.1 christos {
2778 1.1 christos unsigned long datum;
2779 1.1 christos
2780 1.1.1.5 christos asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2781 1.1 christos if (asec == NULL)
2782 1.1 christos continue;
2783 1.1 christos
2784 1.1 christos /* xgettext:c-format */
2785 1.1 christos error_message = _("corrupt %s section in %B");
2786 1.1 christos length = asec->size;
2787 1.1 christos if (length < 20)
2788 1.1 christos goto fail;
2789 1.1 christos
2790 1.1 christos apuinfo_set = TRUE;
2791 1.1 christos if (largest_input_size < asec->size)
2792 1.1 christos {
2793 1.1 christos if (buffer)
2794 1.1 christos free (buffer);
2795 1.1 christos largest_input_size = asec->size;
2796 1.1 christos buffer = bfd_malloc (largest_input_size);
2797 1.1 christos if (!buffer)
2798 1.1 christos return;
2799 1.1 christos }
2800 1.1.1.5 christos
2801 1.1 christos if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2802 1.1 christos || (bfd_bread (buffer, length, ibfd) != length))
2803 1.1 christos {
2804 1.1 christos /* xgettext:c-format */
2805 1.1 christos error_message = _("unable to read in %s section from %B");
2806 1.1 christos goto fail;
2807 1.1 christos }
2808 1.1 christos
2809 1.1 christos /* Verify the contents of the header. Note - we have to
2810 1.1 christos extract the values this way in order to allow for a
2811 1.1 christos host whose endian-ness is different from the target. */
2812 1.1 christos datum = bfd_get_32 (ibfd, buffer);
2813 1.1 christos if (datum != sizeof APUINFO_LABEL)
2814 1.1 christos goto fail;
2815 1.1 christos
2816 1.1 christos datum = bfd_get_32 (ibfd, buffer + 8);
2817 1.1 christos if (datum != 0x2)
2818 1.1 christos goto fail;
2819 1.1 christos
2820 1.1 christos if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2821 1.1 christos goto fail;
2822 1.1 christos
2823 1.1 christos /* Get the number of bytes used for apuinfo entries. */
2824 1.1 christos datum = bfd_get_32 (ibfd, buffer + 4);
2825 1.1 christos if (datum + 20 != length)
2826 1.1 christos goto fail;
2827 1.1 christos
2828 1.1 christos /* Scan the apuinfo section, building a list of apuinfo numbers. */
2829 1.1 christos for (i = 0; i < datum; i += 4)
2830 1.1 christos apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2831 1.1 christos }
2832 1.1 christos
2833 1.1 christos error_message = NULL;
2834 1.1 christos
2835 1.1 christos if (apuinfo_set)
2836 1.1 christos {
2837 1.1 christos /* Compute the size of the output section. */
2838 1.1 christos unsigned num_entries = apuinfo_list_length ();
2839 1.1 christos
2840 1.1 christos /* Set the output section size, if it exists. */
2841 1.1 christos asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2842 1.1.1.5 christos
2843 1.1 christos if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2844 1.1 christos {
2845 1.1 christos ibfd = abfd;
2846 1.1 christos /* xgettext:c-format */
2847 1.1 christos error_message = _("warning: unable to set size of %s section in %B");
2848 1.1 christos }
2849 1.1 christos }
2850 1.1 christos
2851 1.1 christos fail:
2852 1.1.1.5 christos if (buffer)
2853 1.1 christos free (buffer);
2854 1.1 christos
2855 1.1 christos if (error_message)
2856 1.1 christos _bfd_error_handler (error_message, ibfd, APUINFO_SECTION_NAME);
2857 1.1 christos }
2858 1.1 christos
2859 1.1 christos /* Prevent the output section from accumulating the input sections'
2860 1.1 christos contents. We have already stored this in our linked list structure. */
2861 1.1 christos
2862 1.1 christos static bfd_boolean
2863 1.1 christos ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2864 1.1 christos struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2865 1.1 christos asection *asec,
2866 1.1 christos bfd_byte *contents ATTRIBUTE_UNUSED)
2867 1.1 christos {
2868 1.1 christos return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2869 1.1 christos }
2870 1.1 christos
2871 1.1 christos /* Finally we can generate the output section. */
2872 1.1 christos
2873 1.1 christos static void
2874 1.1 christos ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2875 1.1 christos {
2876 1.1 christos bfd_byte *buffer;
2877 1.1 christos asection *asec;
2878 1.1 christos unsigned i;
2879 1.1 christos unsigned num_entries;
2880 1.1 christos bfd_size_type length;
2881 1.1 christos
2882 1.1 christos asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2883 1.1 christos if (asec == NULL)
2884 1.1 christos return;
2885 1.1 christos
2886 1.1 christos if (!apuinfo_set)
2887 1.1 christos return;
2888 1.1 christos
2889 1.1 christos length = asec->size;
2890 1.1 christos if (length < 20)
2891 1.1 christos return;
2892 1.1.1.5 christos
2893 1.1 christos buffer = bfd_malloc (length);
2894 1.1 christos if (buffer == NULL)
2895 1.1 christos {
2896 1.1 christos _bfd_error_handler
2897 1.1 christos (_("failed to allocate space for new APUinfo section."));
2898 1.1 christos return;
2899 1.1 christos }
2900 1.1 christos
2901 1.1 christos /* Create the apuinfo header. */
2902 1.1 christos num_entries = apuinfo_list_length ();
2903 1.1 christos bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2904 1.1 christos bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2905 1.1 christos bfd_put_32 (abfd, 0x2, buffer + 8);
2906 1.1 christos strcpy ((char *) buffer + 12, APUINFO_LABEL);
2907 1.1 christos
2908 1.1 christos length = 20;
2909 1.1 christos for (i = 0; i < num_entries; i++)
2910 1.1 christos {
2911 1.1 christos bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2912 1.1.1.5 christos length += 4;
2913 1.1 christos }
2914 1.1 christos
2915 1.1.1.5 christos if (length != asec->size)
2916 1.1 christos _bfd_error_handler (_("failed to compute new APUinfo section."));
2917 1.1 christos
2918 1.1 christos if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2919 1.1 christos _bfd_error_handler (_("failed to install new APUinfo section."));
2920 1.1 christos
2921 1.1 christos free (buffer);
2922 1.1 christos
2923 1.1 christos apuinfo_list_finish ();
2924 1.1 christos }
2925 1.1 christos
2926 1.1 christos static bfd_boolean
2928 1.1 christos is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2929 1.1 christos {
2930 1.1 christos bfd_byte buf[GLINK_ENTRY_SIZE];
2931 1.1 christos
2932 1.1 christos if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2933 1.1 christos return FALSE;
2934 1.1 christos
2935 1.1 christos return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2936 1.1 christos && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2937 1.1 christos && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2938 1.1 christos && bfd_get_32 (abfd, buf + 12) == BCTR);
2939 1.1 christos }
2940 1.1 christos
2941 1.1 christos static bfd_boolean
2942 1.1 christos section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2943 1.1 christos {
2944 1.1 christos bfd_vma vma = *(bfd_vma *) ptr;
2945 1.1 christos return ((section->flags & SEC_ALLOC) != 0
2946 1.1 christos && section->vma <= vma
2947 1.1 christos && vma < section->vma + section->size);
2948 1.1 christos }
2949 1.1 christos
2950 1.1 christos static long
2951 1.1 christos ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2952 1.1 christos long dynsymcount, asymbol **dynsyms,
2953 1.1 christos asymbol **ret)
2954 1.1 christos {
2955 1.1 christos bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2956 1.1 christos asection *plt, *relplt, *dynamic, *glink;
2957 1.1 christos bfd_vma glink_vma = 0;
2958 1.1 christos bfd_vma resolv_vma = 0;
2959 1.1 christos bfd_vma stub_vma;
2960 1.1 christos asymbol *s;
2961 1.1 christos arelent *p;
2962 1.1 christos long count, i;
2963 1.1 christos size_t size;
2964 1.1 christos char *names;
2965 1.1 christos bfd_byte buf[4];
2966 1.1 christos
2967 1.1 christos *ret = NULL;
2968 1.1 christos
2969 1.1 christos if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2970 1.1 christos return 0;
2971 1.1 christos
2972 1.1 christos if (dynsymcount <= 0)
2973 1.1 christos return 0;
2974 1.1 christos
2975 1.1 christos relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2976 1.1 christos if (relplt == NULL)
2977 1.1 christos return 0;
2978 1.1 christos
2979 1.1 christos plt = bfd_get_section_by_name (abfd, ".plt");
2980 1.1 christos if (plt == NULL)
2981 1.1 christos return 0;
2982 1.1 christos
2983 1.1 christos /* Call common code to handle old-style executable PLTs. */
2984 1.1 christos if (elf_section_flags (plt) & SHF_EXECINSTR)
2985 1.1 christos return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2986 1.1 christos dynsymcount, dynsyms, ret);
2987 1.1 christos
2988 1.1 christos /* If this object was prelinked, the prelinker stored the address
2989 1.1 christos of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2990 1.1 christos dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2991 1.1 christos if (dynamic != NULL)
2992 1.1 christos {
2993 1.1 christos bfd_byte *dynbuf, *extdyn, *extdynend;
2994 1.1 christos size_t extdynsize;
2995 1.1 christos void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2996 1.1 christos
2997 1.1 christos if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2998 1.1 christos return -1;
2999 1.1 christos
3000 1.1 christos extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3001 1.1 christos swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3002 1.1 christos
3003 1.1 christos extdyn = dynbuf;
3004 1.1 christos extdynend = extdyn + dynamic->size;
3005 1.1 christos for (; extdyn < extdynend; extdyn += extdynsize)
3006 1.1 christos {
3007 1.1 christos Elf_Internal_Dyn dyn;
3008 1.1 christos (*swap_dyn_in) (abfd, extdyn, &dyn);
3009 1.1 christos
3010 1.1 christos if (dyn.d_tag == DT_NULL)
3011 1.1 christos break;
3012 1.1 christos
3013 1.1 christos if (dyn.d_tag == DT_PPC_GOT)
3014 1.1 christos {
3015 1.1 christos unsigned int g_o_t = dyn.d_un.d_val;
3016 1.1 christos asection *got = bfd_get_section_by_name (abfd, ".got");
3017 1.1 christos if (got != NULL
3018 1.1 christos && bfd_get_section_contents (abfd, got, buf,
3019 1.1 christos g_o_t - got->vma + 4, 4))
3020 1.1 christos glink_vma = bfd_get_32 (abfd, buf);
3021 1.1 christos break;
3022 1.1 christos }
3023 1.1 christos }
3024 1.1 christos free (dynbuf);
3025 1.1 christos }
3026 1.1 christos
3027 1.1 christos /* Otherwise we read the first plt entry. */
3028 1.1 christos if (glink_vma == 0)
3029 1.1 christos {
3030 1.1 christos if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
3031 1.1 christos glink_vma = bfd_get_32 (abfd, buf);
3032 1.1 christos }
3033 1.1 christos
3034 1.1 christos if (glink_vma == 0)
3035 1.1 christos return 0;
3036 1.1 christos
3037 1.1 christos /* The .glink section usually does not survive the final
3038 1.1 christos link; search for the section (usually .text) where the
3039 1.1 christos glink stubs now reside. */
3040 1.1 christos glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
3041 1.1 christos if (glink == NULL)
3042 1.1 christos return 0;
3043 1.1 christos
3044 1.1 christos /* Determine glink PLT resolver by reading the relative branch
3045 1.1 christos from the first glink stub. */
3046 1.1 christos if (bfd_get_section_contents (abfd, glink, buf,
3047 1.1 christos glink_vma - glink->vma, 4))
3048 1.1 christos {
3049 1.1 christos unsigned int insn = bfd_get_32 (abfd, buf);
3050 1.1 christos
3051 1.1 christos /* The first glink stub may either branch to the resolver ... */
3052 1.1 christos insn ^= B;
3053 1.1 christos if ((insn & ~0x3fffffc) == 0)
3054 1.1 christos resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
3055 1.1 christos
3056 1.1 christos /* ... or fall through a bunch of NOPs. */
3057 1.1 christos else if ((insn ^ B ^ NOP) == 0)
3058 1.1 christos for (i = 4;
3059 1.1 christos bfd_get_section_contents (abfd, glink, buf,
3060 1.1 christos glink_vma - glink->vma + i, 4);
3061 1.1 christos i += 4)
3062 1.1 christos if (bfd_get_32 (abfd, buf) != NOP)
3063 1.1 christos {
3064 1.1 christos resolv_vma = glink_vma + i;
3065 1.1 christos break;
3066 1.1 christos }
3067 1.1 christos }
3068 1.1 christos
3069 1.1 christos count = relplt->size / sizeof (Elf32_External_Rela);
3070 1.1 christos /* If the stubs are those for -shared/-pie then we might have
3071 1.1 christos multiple stubs for each plt entry. If that is the case then
3072 1.1 christos there is no way to associate stubs with their plt entries short
3073 1.1 christos of figuring out the GOT pointer value used in the stub. */
3074 1.1 christos if (!is_nonpic_glink_stub (abfd, glink,
3075 1.1 christos glink_vma - GLINK_ENTRY_SIZE - glink->vma))
3076 1.1 christos return 0;
3077 1.1 christos
3078 1.1 christos slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3079 1.1 christos if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
3080 1.1 christos return -1;
3081 1.1 christos
3082 1.1 christos size = count * sizeof (asymbol);
3083 1.1 christos p = relplt->relocation;
3084 1.1 christos for (i = 0; i < count; i++, p++)
3085 1.1 christos {
3086 1.1 christos size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3087 1.1 christos if (p->addend != 0)
3088 1.1 christos size += sizeof ("+0x") - 1 + 8;
3089 1.1 christos }
3090 1.1 christos
3091 1.1 christos size += sizeof (asymbol) + sizeof ("__glink");
3092 1.1 christos
3093 1.1 christos if (resolv_vma)
3094 1.1 christos size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3095 1.1.1.3 christos
3096 1.1 christos s = *ret = bfd_malloc (size);
3097 1.1.1.3 christos if (s == NULL)
3098 1.1.1.3 christos return -1;
3099 1.1 christos
3100 1.1 christos stub_vma = glink_vma;
3101 1.1 christos names = (char *) (s + count + 1 + (resolv_vma != 0));
3102 1.1 christos p = relplt->relocation + count - 1;
3103 1.1 christos for (i = 0; i < count; i++)
3104 1.1 christos {
3105 1.1 christos size_t len;
3106 1.1 christos
3107 1.1 christos *s = **p->sym_ptr_ptr;
3108 1.1 christos /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3109 1.1.1.3 christos we are defining a symbol, ensure one of them is set. */
3110 1.1.1.3 christos if ((s->flags & BSF_LOCAL) == 0)
3111 1.1.1.3 christos s->flags |= BSF_GLOBAL;
3112 1.1 christos s->flags |= BSF_SYNTHETIC;
3113 1.1 christos s->section = glink;
3114 1.1 christos stub_vma -= 16;
3115 1.1 christos if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
3116 1.1 christos stub_vma -= 32;
3117 1.1 christos s->value = stub_vma - glink->vma;
3118 1.1 christos s->name = names;
3119 1.1 christos s->udata.p = NULL;
3120 1.1 christos len = strlen ((*p->sym_ptr_ptr)->name);
3121 1.1 christos memcpy (names, (*p->sym_ptr_ptr)->name, len);
3122 1.1 christos names += len;
3123 1.1 christos if (p->addend != 0)
3124 1.1 christos {
3125 1.1 christos memcpy (names, "+0x", sizeof ("+0x") - 1);
3126 1.1 christos names += sizeof ("+0x") - 1;
3127 1.1 christos bfd_sprintf_vma (abfd, names, p->addend);
3128 1.1.1.3 christos names += strlen (names);
3129 1.1 christos }
3130 1.1 christos memcpy (names, "@plt", sizeof ("@plt"));
3131 1.1 christos names += sizeof ("@plt");
3132 1.1 christos ++s;
3133 1.1 christos --p;
3134 1.1 christos }
3135 1.1 christos
3136 1.1 christos /* Add a symbol at the start of the glink branch table. */
3137 1.1 christos memset (s, 0, sizeof *s);
3138 1.1 christos s->the_bfd = abfd;
3139 1.1 christos s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3140 1.1 christos s->section = glink;
3141 1.1 christos s->value = glink_vma - glink->vma;
3142 1.1 christos s->name = names;
3143 1.1 christos memcpy (names, "__glink", sizeof ("__glink"));
3144 1.1 christos names += sizeof ("__glink");
3145 1.1 christos s++;
3146 1.1 christos count++;
3147 1.1 christos
3148 1.1 christos if (resolv_vma)
3149 1.1 christos {
3150 1.1 christos /* Add a symbol for the glink PLT resolver. */
3151 1.1 christos memset (s, 0, sizeof *s);
3152 1.1 christos s->the_bfd = abfd;
3153 1.1 christos s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3154 1.1 christos s->section = glink;
3155 1.1 christos s->value = resolv_vma - glink->vma;
3156 1.1 christos s->name = names;
3157 1.1 christos memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3158 1.1 christos names += sizeof ("__glink_PLTresolve");
3159 1.1 christos s++;
3160 1.1 christos count++;
3161 1.1 christos }
3162 1.1 christos
3163 1.1 christos return count;
3164 1.1 christos }
3165 1.1 christos
3166 1.1 christos /* The following functions are specific to the ELF linker, while
3168 1.1 christos functions above are used generally. They appear in this file more
3169 1.1 christos or less in the order in which they are called. eg.
3170 1.1 christos ppc_elf_check_relocs is called early in the link process,
3171 1.1 christos ppc_elf_finish_dynamic_sections is one of the last functions
3172 1.1 christos called. */
3173 1.1 christos
3174 1.1 christos /* Track PLT entries needed for a given symbol. We might need more
3175 1.1 christos than one glink entry per symbol when generating a pic binary. */
3176 1.1 christos struct plt_entry
3177 1.1 christos {
3178 1.1 christos struct plt_entry *next;
3179 1.1 christos
3180 1.1 christos /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3181 1.1 christos This field stores the offset into .got2 used to initialise the
3182 1.1 christos GOT pointer reg. It will always be at least 32768. (Current
3183 1.1 christos gcc always uses an offset of 32768, but ld -r will pack .got2
3184 1.1 christos sections together resulting in larger offsets). */
3185 1.1 christos bfd_vma addend;
3186 1.1 christos
3187 1.1 christos /* The .got2 section. */
3188 1.1 christos asection *sec;
3189 1.1 christos
3190 1.1 christos /* PLT refcount or offset. */
3191 1.1 christos union
3192 1.1 christos {
3193 1.1 christos bfd_signed_vma refcount;
3194 1.1 christos bfd_vma offset;
3195 1.1 christos } plt;
3196 1.1 christos
3197 1.1 christos /* .glink stub offset. */
3198 1.1 christos bfd_vma glink_offset;
3199 1.1 christos };
3200 1.1 christos
3201 1.1 christos /* Of those relocs that might be copied as dynamic relocs, this function
3202 1.1 christos selects those that must be copied when linking a shared library,
3203 1.1 christos even when the symbol is local. */
3204 1.1 christos
3205 1.1 christos static int
3206 1.1 christos must_be_dyn_reloc (struct bfd_link_info *info,
3207 1.1 christos enum elf_ppc_reloc_type r_type)
3208 1.1 christos {
3209 1.1 christos switch (r_type)
3210 1.1 christos {
3211 1.1 christos default:
3212 1.1 christos return 1;
3213 1.1 christos
3214 1.1 christos case R_PPC_REL24:
3215 1.1 christos case R_PPC_REL14:
3216 1.1 christos case R_PPC_REL14_BRTAKEN:
3217 1.1 christos case R_PPC_REL14_BRNTAKEN:
3218 1.1 christos case R_PPC_REL32:
3219 1.1 christos return 0;
3220 1.1.1.4 christos
3221 1.1 christos case R_PPC_TPREL32:
3222 1.1 christos case R_PPC_TPREL16:
3223 1.1 christos case R_PPC_TPREL16_LO:
3224 1.1 christos case R_PPC_TPREL16_HI:
3225 1.1 christos case R_PPC_TPREL16_HA:
3226 1.1 christos return !bfd_link_executable (info);
3227 1.1 christos }
3228 1.1 christos }
3229 1.1 christos
3230 1.1 christos /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3231 1.1 christos copying dynamic variables from a shared lib into an app's dynbss
3232 1.1 christos section, and instead use a dynamic relocation to point into the
3233 1.1 christos shared lib. */
3234 1.1 christos #define ELIMINATE_COPY_RELOCS 1
3235 1.1 christos
3236 1.1 christos /* Used to track dynamic relocations for local symbols. */
3237 1.1 christos struct ppc_dyn_relocs
3238 1.1 christos {
3239 1.1 christos struct ppc_dyn_relocs *next;
3240 1.1 christos
3241 1.1 christos /* The input section of the reloc. */
3242 1.1 christos asection *sec;
3243 1.1 christos
3244 1.1 christos /* Total number of relocs copied for the input section. */
3245 1.1 christos unsigned int count : 31;
3246 1.1 christos
3247 1.1 christos /* Whether this entry is for STT_GNU_IFUNC symbols. */
3248 1.1 christos unsigned int ifunc : 1;
3249 1.1 christos };
3250 1.1 christos
3251 1.1 christos /* PPC ELF linker hash entry. */
3252 1.1 christos
3253 1.1 christos struct ppc_elf_link_hash_entry
3254 1.1 christos {
3255 1.1 christos struct elf_link_hash_entry elf;
3256 1.1 christos
3257 1.1 christos /* If this symbol is used in the linker created sections, the processor
3258 1.1 christos specific backend uses this field to map the field into the offset
3259 1.1 christos from the beginning of the section. */
3260 1.1 christos elf_linker_section_pointers_t *linker_section_pointer;
3261 1.1 christos
3262 1.1 christos /* Track dynamic relocs copied for this symbol. */
3263 1.1 christos struct elf_dyn_relocs *dyn_relocs;
3264 1.1 christos
3265 1.1 christos /* Contexts in which symbol is used in the GOT (or TOC).
3266 1.1 christos TLS_GD .. TLS_TLS bits are or'd into the mask as the
3267 1.1 christos corresponding relocs are encountered during check_relocs.
3268 1.1 christos tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3269 1.1 christos indicate the corresponding GOT entry type is not needed. */
3270 1.1 christos #define TLS_GD 1 /* GD reloc. */
3271 1.1 christos #define TLS_LD 2 /* LD reloc. */
3272 1.1 christos #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3273 1.1 christos #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3274 1.1 christos #define TLS_TLS 16 /* Any TLS reloc. */
3275 1.1.1.3 christos #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3276 1.1.1.3 christos #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3277 1.1.1.3 christos char tls_mask;
3278 1.1.1.3 christos
3279 1.1.1.3 christos /* Nonzero if we have seen a small data relocation referring to this
3280 1.1 christos symbol. */
3281 1.1 christos unsigned char has_sda_refs : 1;
3282 1.1 christos
3283 1.1 christos /* Flag use of given relocations. */
3284 1.1 christos unsigned char has_addr16_ha : 1;
3285 1.1 christos unsigned char has_addr16_lo : 1;
3286 1.1 christos };
3287 1.1 christos
3288 1.1 christos #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3289 1.1 christos
3290 1.1.1.2 christos /* PPC ELF linker hash table. */
3291 1.1.1.2 christos
3292 1.1.1.2 christos struct ppc_elf_link_hash_table
3293 1.1 christos {
3294 1.1 christos struct elf_link_hash_table elf;
3295 1.1 christos
3296 1.1 christos /* Various options passed from the linker. */
3297 1.1 christos struct ppc_elf_params *params;
3298 1.1 christos
3299 1.1 christos /* Short-cuts to get to dynamic linker sections. */
3300 1.1 christos asection *glink;
3301 1.1 christos asection *dynsbss;
3302 1.1 christos asection *relsbss;
3303 1.1 christos elf_linker_section_t sdata[2];
3304 1.1 christos asection *sbss;
3305 1.1 christos asection *glink_eh_frame;
3306 1.1 christos
3307 1.1 christos /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3308 1.1 christos asection *srelplt2;
3309 1.1 christos
3310 1.1 christos /* Shortcut to __tls_get_addr. */
3311 1.1 christos struct elf_link_hash_entry *tls_get_addr;
3312 1.1 christos
3313 1.1 christos /* The bfd that forced an old-style PLT. */
3314 1.1 christos bfd *old_bfd;
3315 1.1 christos
3316 1.1 christos /* TLS local dynamic got entry handling. */
3317 1.1 christos union {
3318 1.1 christos bfd_signed_vma refcount;
3319 1.1 christos bfd_vma offset;
3320 1.1 christos } tlsld_got;
3321 1.1 christos
3322 1.1 christos /* Offset of branch table to PltResolve function in glink. */
3323 1.1 christos bfd_vma glink_pltresolve;
3324 1.1 christos
3325 1.1 christos /* Size of reserved GOT entries. */
3326 1.1 christos unsigned int got_header_size;
3327 1.1 christos /* Non-zero if allocating the header left a gap. */
3328 1.1 christos unsigned int got_gap;
3329 1.1 christos
3330 1.1.1.5 christos /* The type of PLT we have chosen to use. */
3331 1.1.1.5 christos enum ppc_elf_plt_type plt_type;
3332 1.1.1.5 christos
3333 1.1.1.5 christos /* True if the target system is VxWorks. */
3334 1.1.1.5 christos unsigned int is_vxworks:1;
3335 1.1 christos
3336 1.1 christos /* Whether there exist local gnu indirect function resolvers,
3337 1.1 christos referenced by dynamic relocations. */
3338 1.1 christos unsigned int local_ifunc_resolver:1;
3339 1.1 christos unsigned int maybe_local_ifunc_resolver:1;
3340 1.1 christos
3341 1.1 christos /* The size of PLT entries. */
3342 1.1 christos int plt_entry_size;
3343 1.1 christos /* The distance between adjacent PLT slots. */
3344 1.1 christos int plt_slot_size;
3345 1.1 christos /* The size of the first PLT entry. */
3346 1.1 christos int plt_initial_entry_size;
3347 1.1 christos
3348 1.1 christos /* Small local sym cache. */
3349 1.1 christos struct sym_cache sym_cache;
3350 1.1 christos };
3351 1.1 christos
3352 1.1 christos /* Rename some of the generic section flags to better document how they
3353 1.1 christos are used for ppc32. The flags are only valid for ppc32 elf objects. */
3354 1.1 christos
3355 1.1 christos /* Nonzero if this section has TLS related relocations. */
3356 1.1 christos #define has_tls_reloc sec_flg0
3357 1.1 christos
3358 1.1 christos /* Nonzero if this section has a call to __tls_get_addr. */
3359 1.1 christos #define has_tls_get_addr_call sec_flg1
3360 1.1 christos
3361 1.1 christos /* Get the PPC ELF linker hash table from a link_info structure. */
3362 1.1 christos
3363 1.1 christos #define ppc_elf_hash_table(p) \
3364 1.1 christos (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3365 1.1 christos == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3366 1.1 christos
3367 1.1 christos /* Create an entry in a PPC ELF linker hash table. */
3368 1.1 christos
3369 1.1 christos static struct bfd_hash_entry *
3370 1.1 christos ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3371 1.1 christos struct bfd_hash_table *table,
3372 1.1 christos const char *string)
3373 1.1 christos {
3374 1.1 christos /* Allocate the structure if it has not already been allocated by a
3375 1.1 christos subclass. */
3376 1.1 christos if (entry == NULL)
3377 1.1 christos {
3378 1.1 christos entry = bfd_hash_allocate (table,
3379 1.1 christos sizeof (struct ppc_elf_link_hash_entry));
3380 1.1 christos if (entry == NULL)
3381 1.1 christos return entry;
3382 1.1 christos }
3383 1.1 christos
3384 1.1 christos /* Call the allocation method of the superclass. */
3385 1.1 christos entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3386 1.1 christos if (entry != NULL)
3387 1.1 christos {
3388 1.1 christos ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3389 1.1 christos ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3390 1.1 christos ppc_elf_hash_entry (entry)->tls_mask = 0;
3391 1.1 christos ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3392 1.1 christos }
3393 1.1 christos
3394 1.1 christos return entry;
3395 1.1 christos }
3396 1.1 christos
3397 1.1.1.4 christos /* Create a PPC ELF linker hash table. */
3398 1.1.1.5 christos
3399 1.1 christos static struct bfd_link_hash_table *
3400 1.1 christos ppc_elf_link_hash_table_create (bfd *abfd)
3401 1.1 christos {
3402 1.1 christos struct ppc_elf_link_hash_table *ret;
3403 1.1 christos static struct ppc_elf_params default_params
3404 1.1 christos = { PLT_OLD, 0, 1, 0, 0, 12, 0, 0, 0 };
3405 1.1 christos
3406 1.1 christos ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3407 1.1 christos if (ret == NULL)
3408 1.1 christos return NULL;
3409 1.1 christos
3410 1.1 christos if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3411 1.1 christos ppc_elf_link_hash_newfunc,
3412 1.1 christos sizeof (struct ppc_elf_link_hash_entry),
3413 1.1 christos PPC32_ELF_DATA))
3414 1.1 christos {
3415 1.1 christos free (ret);
3416 1.1 christos return NULL;
3417 1.1 christos }
3418 1.1.1.2 christos
3419 1.1.1.2 christos ret->elf.init_plt_refcount.refcount = 0;
3420 1.1 christos ret->elf.init_plt_refcount.glist = NULL;
3421 1.1 christos ret->elf.init_plt_offset.offset = 0;
3422 1.1 christos ret->elf.init_plt_offset.glist = NULL;
3423 1.1 christos
3424 1.1 christos ret->params = &default_params;
3425 1.1 christos
3426 1.1 christos ret->sdata[0].name = ".sdata";
3427 1.1 christos ret->sdata[0].sym_name = "_SDA_BASE_";
3428 1.1 christos ret->sdata[0].bss_name = ".sbss";
3429 1.1 christos
3430 1.1 christos ret->sdata[1].name = ".sdata2";
3431 1.1 christos ret->sdata[1].sym_name = "_SDA2_BASE_";
3432 1.1 christos ret->sdata[1].bss_name = ".sbss2";
3433 1.1 christos
3434 1.1 christos ret->plt_entry_size = 12;
3435 1.1.1.2 christos ret->plt_slot_size = 8;
3436 1.1.1.2 christos ret->plt_initial_entry_size = 72;
3437 1.1.1.2 christos
3438 1.1.1.2 christos return &ret->elf.root;
3439 1.1.1.2 christos }
3440 1.1.1.2 christos
3441 1.1.1.2 christos /* Hook linker params into hash table. */
3442 1.1.1.2 christos
3443 1.1.1.2 christos void
3444 1.1.1.4 christos ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3445 1.1.1.2 christos {
3446 1.1.1.2 christos struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3447 1.1 christos
3448 1.1 christos if (htab)
3449 1.1 christos htab->params = params;
3450 1.1 christos params->pagesize_p2 = bfd_log2 (params->pagesize);
3451 1.1 christos }
3452 1.1 christos
3453 1.1 christos /* Create .got and the related sections. */
3454 1.1 christos
3455 1.1 christos static bfd_boolean
3456 1.1 christos ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3457 1.1 christos {
3458 1.1.1.5 christos struct ppc_elf_link_hash_table *htab;
3459 1.1 christos
3460 1.1 christos if (!_bfd_elf_create_got_section (abfd, info))
3461 1.1 christos return FALSE;
3462 1.1.1.5 christos
3463 1.1.1.5 christos htab = ppc_elf_hash_table (info);
3464 1.1.1.5 christos if (!htab->is_vxworks)
3465 1.1 christos {
3466 1.1 christos /* The powerpc .got has a blrl instruction in it. Mark it
3467 1.1 christos executable. */
3468 1.1 christos flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3469 1.1 christos | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3470 1.1 christos if (!bfd_set_section_flags (abfd, htab->elf.sgot, flags))
3471 1.1.1.2 christos return FALSE;
3472 1.1.1.2 christos }
3473 1.1.1.2 christos
3474 1.1.1.2 christos return TRUE;
3475 1.1.1.2 christos }
3476 1.1.1.2 christos
3477 1.1.1.2 christos /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3478 1.1.1.2 christos R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3479 1.1.1.2 christos and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3480 1.1.1.2 christos
3481 1.1.1.2 christos static bfd_boolean
3482 1.1.1.2 christos ppc_elf_create_linker_section (bfd *abfd,
3483 1.1.1.2 christos struct bfd_link_info *info,
3484 1.1.1.2 christos flagword flags,
3485 1.1.1.2 christos elf_linker_section_t *lsect)
3486 1.1.1.2 christos {
3487 1.1.1.2 christos asection *s;
3488 1.1.1.2 christos
3489 1.1.1.2 christos flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3490 1.1.1.2 christos | SEC_LINKER_CREATED);
3491 1.1.1.2 christos
3492 1.1.1.2 christos s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3493 1.1.1.2 christos if (s == NULL)
3494 1.1.1.2 christos return FALSE;
3495 1.1.1.2 christos lsect->section = s;
3496 1.1.1.2 christos
3497 1.1.1.2 christos /* Define the sym on the first section of this name. */
3498 1.1.1.2 christos s = bfd_get_section_by_name (abfd, lsect->name);
3499 1.1.1.2 christos
3500 1.1.1.2 christos lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3501 1.1 christos if (lsect->sym == NULL)
3502 1.1 christos return FALSE;
3503 1.1 christos lsect->sym->root.u.def.value = 0x8000;
3504 1.1 christos return TRUE;
3505 1.1 christos }
3506 1.1 christos
3507 1.1 christos static bfd_boolean
3508 1.1 christos ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3509 1.1 christos {
3510 1.1 christos struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3511 1.1 christos asection *s;
3512 1.1 christos flagword flags;
3513 1.1.1.2 christos
3514 1.1.1.2 christos flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3515 1.1 christos | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3516 1.1 christos s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3517 1.1 christos htab->glink = s;
3518 1.1 christos if (s == NULL
3519 1.1 christos || !bfd_set_section_alignment (abfd, s,
3520 1.1 christos htab->params->ppc476_workaround ? 6 : 4))
3521 1.1 christos return FALSE;
3522 1.1 christos
3523 1.1 christos if (!info->no_ld_generated_unwind_info)
3524 1.1 christos {
3525 1.1 christos flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3526 1.1 christos | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3527 1.1 christos s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3528 1.1 christos htab->glink_eh_frame = s;
3529 1.1 christos if (s == NULL
3530 1.1.1.5 christos || !bfd_set_section_alignment (abfd, s, 2))
3531 1.1 christos return FALSE;
3532 1.1 christos }
3533 1.1 christos
3534 1.1 christos flags = SEC_ALLOC | SEC_LINKER_CREATED;
3535 1.1 christos s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3536 1.1 christos htab->elf.iplt = s;
3537 1.1 christos if (s == NULL
3538 1.1.1.5 christos || !bfd_set_section_alignment (abfd, s, 4))
3539 1.1 christos return FALSE;
3540 1.1 christos
3541 1.1 christos flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3542 1.1.1.2 christos | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3543 1.1.1.2 christos s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3544 1.1.1.2 christos htab->elf.irelplt = s;
3545 1.1.1.2 christos if (s == NULL
3546 1.1.1.2 christos || ! bfd_set_section_alignment (abfd, s, 2))
3547 1.1.1.2 christos return FALSE;
3548 1.1.1.2 christos
3549 1.1.1.2 christos if (!ppc_elf_create_linker_section (abfd, info, 0,
3550 1.1.1.2 christos &htab->sdata[0]))
3551 1.1 christos return FALSE;
3552 1.1 christos
3553 1.1 christos if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3554 1.1 christos &htab->sdata[1]))
3555 1.1 christos return FALSE;
3556 1.1 christos
3557 1.1 christos return TRUE;
3558 1.1 christos }
3559 1.1 christos
3560 1.1 christos /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3561 1.1 christos to output sections (just like _bfd_elf_create_dynamic_sections has
3562 1.1 christos to create .dynbss and .rela.bss). */
3563 1.1 christos
3564 1.1 christos static bfd_boolean
3565 1.1 christos ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3566 1.1 christos {
3567 1.1.1.5 christos struct ppc_elf_link_hash_table *htab;
3568 1.1 christos asection *s;
3569 1.1 christos flagword flags;
3570 1.1 christos
3571 1.1 christos htab = ppc_elf_hash_table (info);
3572 1.1 christos
3573 1.1 christos if (htab->elf.sgot == NULL
3574 1.1 christos && !ppc_elf_create_got (abfd, info))
3575 1.1 christos return FALSE;
3576 1.1 christos
3577 1.1 christos if (!_bfd_elf_create_dynamic_sections (abfd, info))
3578 1.1 christos return FALSE;
3579 1.1 christos
3580 1.1 christos if (htab->glink == NULL
3581 1.1 christos && !ppc_elf_create_glink (abfd, info))
3582 1.1 christos return FALSE;
3583 1.1 christos
3584 1.1.1.4 christos s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3585 1.1 christos SEC_ALLOC | SEC_LINKER_CREATED);
3586 1.1 christos htab->dynsbss = s;
3587 1.1 christos if (s == NULL)
3588 1.1 christos return FALSE;
3589 1.1 christos
3590 1.1 christos if (! bfd_link_pic (info))
3591 1.1 christos {
3592 1.1 christos flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3593 1.1 christos | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3594 1.1 christos s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3595 1.1 christos htab->relsbss = s;
3596 1.1 christos if (s == NULL
3597 1.1 christos || ! bfd_set_section_alignment (abfd, s, 2))
3598 1.1 christos return FALSE;
3599 1.1.1.5 christos }
3600 1.1 christos
3601 1.1 christos if (htab->is_vxworks
3602 1.1 christos && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3603 1.1 christos return FALSE;
3604 1.1 christos
3605 1.1 christos s = htab->elf.splt;
3606 1.1 christos flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3607 1.1 christos if (htab->plt_type == PLT_VXWORKS)
3608 1.1 christos /* The VxWorks PLT is a loaded section with contents. */
3609 1.1 christos flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3610 1.1 christos return bfd_set_section_flags (abfd, s, flags);
3611 1.1 christos }
3612 1.1 christos
3613 1.1 christos /* Copy the extra info we tack onto an elf_link_hash_entry. */
3614 1.1 christos
3615 1.1 christos static void
3616 1.1 christos ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3617 1.1 christos struct elf_link_hash_entry *dir,
3618 1.1 christos struct elf_link_hash_entry *ind)
3619 1.1 christos {
3620 1.1 christos struct ppc_elf_link_hash_entry *edir, *eind;
3621 1.1 christos
3622 1.1 christos edir = (struct ppc_elf_link_hash_entry *) dir;
3623 1.1 christos eind = (struct ppc_elf_link_hash_entry *) ind;
3624 1.1 christos
3625 1.1 christos edir->tls_mask |= eind->tls_mask;
3626 1.1 christos edir->has_sda_refs |= eind->has_sda_refs;
3627 1.1 christos
3628 1.1 christos /* If called to transfer flags for a weakdef during processing
3629 1.1 christos of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3630 1.1.1.5 christos We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3631 1.1.1.5 christos if (!(ELIMINATE_COPY_RELOCS
3632 1.1 christos && eind->elf.root.type != bfd_link_hash_indirect
3633 1.1 christos && edir->elf.dynamic_adjusted))
3634 1.1 christos edir->elf.non_got_ref |= eind->elf.non_got_ref;
3635 1.1 christos
3636 1.1 christos if (edir->elf.versioned != versioned_hidden)
3637 1.1 christos edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3638 1.1 christos edir->elf.ref_regular |= eind->elf.ref_regular;
3639 1.1 christos edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3640 1.1 christos edir->elf.needs_plt |= eind->elf.needs_plt;
3641 1.1 christos edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3642 1.1 christos
3643 1.1 christos if (eind->dyn_relocs != NULL)
3644 1.1 christos {
3645 1.1 christos if (edir->dyn_relocs != NULL)
3646 1.1 christos {
3647 1.1 christos struct elf_dyn_relocs **pp;
3648 1.1 christos struct elf_dyn_relocs *p;
3649 1.1 christos
3650 1.1 christos /* Add reloc counts against the indirect sym to the direct sym
3651 1.1 christos list. Merge any entries against the same section. */
3652 1.1 christos for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3653 1.1 christos {
3654 1.1 christos struct elf_dyn_relocs *q;
3655 1.1 christos
3656 1.1 christos for (q = edir->dyn_relocs; q != NULL; q = q->next)
3657 1.1 christos if (q->sec == p->sec)
3658 1.1 christos {
3659 1.1 christos q->pc_count += p->pc_count;
3660 1.1 christos q->count += p->count;
3661 1.1 christos *pp = p->next;
3662 1.1 christos break;
3663 1.1 christos }
3664 1.1 christos if (q == NULL)
3665 1.1 christos pp = &p->next;
3666 1.1 christos }
3667 1.1 christos *pp = edir->dyn_relocs;
3668 1.1 christos }
3669 1.1 christos
3670 1.1 christos edir->dyn_relocs = eind->dyn_relocs;
3671 1.1 christos eind->dyn_relocs = NULL;
3672 1.1 christos }
3673 1.1 christos
3674 1.1 christos /* If we were called to copy over info for a weak sym, that's all.
3675 1.1 christos You might think dyn_relocs need not be copied over; After all,
3676 1.1 christos both syms will be dynamic or both non-dynamic so we're just
3677 1.1 christos moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3678 1.1 christos code in ppc_elf_adjust_dynamic_symbol needs to check for
3679 1.1 christos dyn_relocs in read-only sections, and it does so on what is the
3680 1.1 christos DIR sym here. */
3681 1.1 christos if (eind->elf.root.type != bfd_link_hash_indirect)
3682 1.1 christos return;
3683 1.1 christos
3684 1.1 christos /* Copy over the GOT refcount entries that we may have already seen to
3685 1.1 christos the symbol which just became indirect. */
3686 1.1 christos edir->elf.got.refcount += eind->elf.got.refcount;
3687 1.1 christos eind->elf.got.refcount = 0;
3688 1.1 christos
3689 1.1 christos /* And plt entries. */
3690 1.1 christos if (eind->elf.plt.plist != NULL)
3691 1.1 christos {
3692 1.1 christos if (edir->elf.plt.plist != NULL)
3693 1.1 christos {
3694 1.1 christos struct plt_entry **entp;
3695 1.1 christos struct plt_entry *ent;
3696 1.1 christos
3697 1.1 christos for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3698 1.1 christos {
3699 1.1 christos struct plt_entry *dent;
3700 1.1 christos
3701 1.1 christos for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3702 1.1 christos if (dent->sec == ent->sec && dent->addend == ent->addend)
3703 1.1 christos {
3704 1.1 christos dent->plt.refcount += ent->plt.refcount;
3705 1.1 christos *entp = ent->next;
3706 1.1 christos break;
3707 1.1 christos }
3708 1.1 christos if (dent == NULL)
3709 1.1 christos entp = &ent->next;
3710 1.1 christos }
3711 1.1 christos *entp = edir->elf.plt.plist;
3712 1.1 christos }
3713 1.1 christos
3714 1.1 christos edir->elf.plt.plist = eind->elf.plt.plist;
3715 1.1 christos eind->elf.plt.plist = NULL;
3716 1.1 christos }
3717 1.1 christos
3718 1.1 christos if (eind->elf.dynindx != -1)
3719 1.1 christos {
3720 1.1 christos if (edir->elf.dynindx != -1)
3721 1.1 christos _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3722 1.1 christos edir->elf.dynstr_index);
3723 1.1 christos edir->elf.dynindx = eind->elf.dynindx;
3724 1.1 christos edir->elf.dynstr_index = eind->elf.dynstr_index;
3725 1.1 christos eind->elf.dynindx = -1;
3726 1.1 christos eind->elf.dynstr_index = 0;
3727 1.1 christos }
3728 1.1 christos }
3729 1.1 christos
3730 1.1 christos /* Hook called by the linker routine which adds symbols from an object
3731 1.1 christos file. We use it to put .comm items in .sbss, and not .bss. */
3732 1.1 christos
3733 1.1 christos static bfd_boolean
3734 1.1 christos ppc_elf_add_symbol_hook (bfd *abfd,
3735 1.1 christos struct bfd_link_info *info,
3736 1.1 christos Elf_Internal_Sym *sym,
3737 1.1.1.4 christos const char **namep ATTRIBUTE_UNUSED,
3738 1.1 christos flagword *flagsp ATTRIBUTE_UNUSED,
3739 1.1 christos asection **secp,
3740 1.1 christos bfd_vma *valp)
3741 1.1 christos {
3742 1.1 christos if (sym->st_shndx == SHN_COMMON
3743 1.1 christos && !bfd_link_relocatable (info)
3744 1.1 christos && is_ppc_elf (info->output_bfd)
3745 1.1 christos && sym->st_size <= elf_gp_size (abfd))
3746 1.1 christos {
3747 1.1 christos /* Common symbols less than or equal to -G nn bytes are automatically
3748 1.1 christos put into .sbss. */
3749 1.1 christos struct ppc_elf_link_hash_table *htab;
3750 1.1 christos
3751 1.1 christos htab = ppc_elf_hash_table (info);
3752 1.1 christos if (htab->sbss == NULL)
3753 1.1 christos {
3754 1.1 christos flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3755 1.1 christos
3756 1.1 christos if (!htab->elf.dynobj)
3757 1.1 christos htab->elf.dynobj = abfd;
3758 1.1 christos
3759 1.1 christos htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3760 1.1 christos ".sbss",
3761 1.1 christos flags);
3762 1.1 christos if (htab->sbss == NULL)
3763 1.1 christos return FALSE;
3764 1.1.1.4 christos }
3765 1.1.1.2 christos
3766 1.1.1.2 christos *secp = htab->sbss;
3767 1.1.1.4 christos *valp = sym->st_size;
3768 1.1 christos }
3769 1.1 christos
3770 1.1 christos if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3771 1.1 christos && (abfd->flags & DYNAMIC) == 0
3772 1.1 christos && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
3773 1.1 christos elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
3774 1.1 christos
3775 1.1 christos return TRUE;
3776 1.1 christos }
3777 1.1 christos
3778 1.1 christos /* Find a linker generated pointer with a given addend and type. */
3780 1.1 christos
3781 1.1 christos static elf_linker_section_pointers_t *
3782 1.1 christos elf_find_pointer_linker_section
3783 1.1 christos (elf_linker_section_pointers_t *linker_pointers,
3784 1.1 christos bfd_vma addend,
3785 1.1 christos elf_linker_section_t *lsect)
3786 1.1 christos {
3787 1.1 christos for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3788 1.1 christos if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3789 1.1 christos return linker_pointers;
3790 1.1.1.2 christos
3791 1.1.1.2 christos return NULL;
3792 1.1.1.2 christos }
3793 1.1.1.2 christos
3794 1.1 christos /* Allocate a pointer to live in a linker created section. */
3795 1.1 christos
3796 1.1 christos static bfd_boolean
3797 1.1 christos elf_allocate_pointer_linker_section (bfd *abfd,
3798 1.1 christos elf_linker_section_t *lsect,
3799 1.1 christos struct elf_link_hash_entry *h,
3800 1.1 christos const Elf_Internal_Rela *rel)
3801 1.1 christos {
3802 1.1 christos elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3803 1.1 christos elf_linker_section_pointers_t *linker_section_ptr;
3804 1.1 christos unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3805 1.1 christos bfd_size_type amt;
3806 1.1 christos
3807 1.1 christos BFD_ASSERT (lsect != NULL);
3808 1.1 christos
3809 1.1 christos /* Is this a global symbol? */
3810 1.1 christos if (h != NULL)
3811 1.1 christos {
3812 1.1 christos struct ppc_elf_link_hash_entry *eh;
3813 1.1 christos
3814 1.1 christos /* Has this symbol already been allocated? If so, our work is done. */
3815 1.1 christos eh = (struct ppc_elf_link_hash_entry *) h;
3816 1.1 christos if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3817 1.1 christos rel->r_addend,
3818 1.1 christos lsect))
3819 1.1 christos return TRUE;
3820 1.1 christos
3821 1.1 christos ptr_linker_section_ptr = &eh->linker_section_pointer;
3822 1.1 christos }
3823 1.1 christos else
3824 1.1 christos {
3825 1.1 christos BFD_ASSERT (is_ppc_elf (abfd));
3826 1.1 christos
3827 1.1 christos /* Allocation of a pointer to a local symbol. */
3828 1.1 christos elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3829 1.1 christos
3830 1.1 christos /* Allocate a table to hold the local symbols if first time. */
3831 1.1 christos if (!ptr)
3832 1.1 christos {
3833 1.1 christos unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3834 1.1 christos
3835 1.1 christos amt = num_symbols;
3836 1.1 christos amt *= sizeof (elf_linker_section_pointers_t *);
3837 1.1 christos ptr = bfd_zalloc (abfd, amt);
3838 1.1 christos
3839 1.1 christos if (!ptr)
3840 1.1 christos return FALSE;
3841 1.1 christos
3842 1.1 christos elf_local_ptr_offsets (abfd) = ptr;
3843 1.1 christos }
3844 1.1 christos
3845 1.1 christos /* Has this symbol already been allocated? If so, our work is done. */
3846 1.1 christos if (elf_find_pointer_linker_section (ptr[r_symndx],
3847 1.1 christos rel->r_addend,
3848 1.1 christos lsect))
3849 1.1 christos return TRUE;
3850 1.1 christos
3851 1.1 christos ptr_linker_section_ptr = &ptr[r_symndx];
3852 1.1 christos }
3853 1.1 christos
3854 1.1 christos /* Allocate space for a pointer in the linker section, and allocate
3855 1.1 christos a new pointer record from internal memory. */
3856 1.1 christos BFD_ASSERT (ptr_linker_section_ptr != NULL);
3857 1.1 christos amt = sizeof (elf_linker_section_pointers_t);
3858 1.1 christos linker_section_ptr = bfd_alloc (abfd, amt);
3859 1.1 christos
3860 1.1 christos if (!linker_section_ptr)
3861 1.1.1.2 christos return FALSE;
3862 1.1.1.2 christos
3863 1.1 christos linker_section_ptr->next = *ptr_linker_section_ptr;
3864 1.1 christos linker_section_ptr->addend = rel->r_addend;
3865 1.1 christos linker_section_ptr->lsect = lsect;
3866 1.1 christos *ptr_linker_section_ptr = linker_section_ptr;
3867 1.1 christos
3868 1.1 christos if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3869 1.1 christos return FALSE;
3870 1.1 christos linker_section_ptr->offset = lsect->section->size;
3871 1.1 christos lsect->section->size += 4;
3872 1.1 christos
3873 1.1 christos #ifdef DEBUG
3874 1.1 christos fprintf (stderr,
3875 1.1 christos "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3876 1.1 christos lsect->name, (long) linker_section_ptr->offset,
3877 1.1 christos (long) lsect->section->size);
3878 1.1 christos #endif
3879 1.1 christos
3880 1.1 christos return TRUE;
3881 1.1 christos }
3882 1.1 christos
3883 1.1 christos static struct plt_entry **
3884 1.1 christos update_local_sym_info (bfd *abfd,
3885 1.1 christos Elf_Internal_Shdr *symtab_hdr,
3886 1.1 christos unsigned long r_symndx,
3887 1.1 christos int tls_type)
3888 1.1 christos {
3889 1.1 christos bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3890 1.1 christos struct plt_entry **local_plt;
3891 1.1 christos char *local_got_tls_masks;
3892 1.1 christos
3893 1.1 christos if (local_got_refcounts == NULL)
3894 1.1 christos {
3895 1.1 christos bfd_size_type size = symtab_hdr->sh_info;
3896 1.1 christos
3897 1.1 christos size *= (sizeof (*local_got_refcounts)
3898 1.1 christos + sizeof (*local_plt)
3899 1.1 christos + sizeof (*local_got_tls_masks));
3900 1.1 christos local_got_refcounts = bfd_zalloc (abfd, size);
3901 1.1 christos if (local_got_refcounts == NULL)
3902 1.1 christos return NULL;
3903 1.1 christos elf_local_got_refcounts (abfd) = local_got_refcounts;
3904 1.1 christos }
3905 1.1 christos
3906 1.1 christos local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3907 1.1 christos local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3908 1.1 christos local_got_tls_masks[r_symndx] |= tls_type;
3909 1.1 christos if (tls_type != PLT_IFUNC)
3910 1.1 christos local_got_refcounts[r_symndx] += 1;
3911 1.1 christos return local_plt + r_symndx;
3912 1.1 christos }
3913 1.1 christos
3914 1.1 christos static bfd_boolean
3915 1.1 christos update_plt_info (bfd *abfd, struct plt_entry **plist,
3916 1.1 christos asection *sec, bfd_vma addend)
3917 1.1 christos {
3918 1.1 christos struct plt_entry *ent;
3919 1.1 christos
3920 1.1 christos if (addend < 32768)
3921 1.1 christos sec = NULL;
3922 1.1 christos for (ent = *plist; ent != NULL; ent = ent->next)
3923 1.1 christos if (ent->sec == sec && ent->addend == addend)
3924 1.1 christos break;
3925 1.1 christos if (ent == NULL)
3926 1.1 christos {
3927 1.1 christos bfd_size_type amt = sizeof (*ent);
3928 1.1 christos ent = bfd_alloc (abfd, amt);
3929 1.1 christos if (ent == NULL)
3930 1.1 christos return FALSE;
3931 1.1 christos ent->next = *plist;
3932 1.1 christos ent->sec = sec;
3933 1.1 christos ent->addend = addend;
3934 1.1 christos ent->plt.refcount = 0;
3935 1.1 christos *plist = ent;
3936 1.1 christos }
3937 1.1 christos ent->plt.refcount += 1;
3938 1.1 christos return TRUE;
3939 1.1 christos }
3940 1.1 christos
3941 1.1 christos static struct plt_entry *
3942 1.1 christos find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3943 1.1 christos {
3944 1.1 christos struct plt_entry *ent;
3945 1.1 christos
3946 1.1 christos if (addend < 32768)
3947 1.1 christos sec = NULL;
3948 1.1 christos for (ent = *plist; ent != NULL; ent = ent->next)
3949 1.1 christos if (ent->sec == sec && ent->addend == addend)
3950 1.1 christos break;
3951 1.1 christos return ent;
3952 1.1 christos }
3953 1.1 christos
3954 1.1 christos static bfd_boolean
3955 1.1 christos is_branch_reloc (enum elf_ppc_reloc_type r_type)
3956 1.1 christos {
3957 1.1 christos return (r_type == R_PPC_PLTREL24
3958 1.1 christos || r_type == R_PPC_LOCAL24PC
3959 1.1.1.5 christos || r_type == R_PPC_REL24
3960 1.1.1.5 christos || r_type == R_PPC_REL14
3961 1.1 christos || r_type == R_PPC_REL14_BRTAKEN
3962 1.1 christos || r_type == R_PPC_REL14_BRNTAKEN
3963 1.1 christos || r_type == R_PPC_ADDR24
3964 1.1 christos || r_type == R_PPC_ADDR14
3965 1.1 christos || r_type == R_PPC_ADDR14_BRTAKEN
3966 1.1.1.5 christos || r_type == R_PPC_ADDR14_BRNTAKEN
3967 1.1.1.5 christos || r_type == R_PPC_VLE_REL24);
3968 1.1 christos }
3969 1.1 christos
3970 1.1 christos static void
3971 1.1 christos bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3972 1.1 christos {
3973 1.1 christos _bfd_error_handler
3974 1.1 christos /* xgettext:c-format */
3975 1.1 christos (_("%B: relocation %s cannot be used when making a shared object"),
3976 1.1 christos abfd,
3977 1.1 christos ppc_elf_howto_table[r_type]->name);
3978 1.1 christos bfd_set_error (bfd_error_bad_value);
3979 1.1 christos }
3980 1.1 christos
3981 1.1 christos /* Look through the relocs for a section during the first phase, and
3982 1.1 christos allocate space in the global offset table or procedure linkage
3983 1.1 christos table. */
3984 1.1 christos
3985 1.1 christos static bfd_boolean
3986 1.1 christos ppc_elf_check_relocs (bfd *abfd,
3987 1.1 christos struct bfd_link_info *info,
3988 1.1 christos asection *sec,
3989 1.1 christos const Elf_Internal_Rela *relocs)
3990 1.1 christos {
3991 1.1 christos struct ppc_elf_link_hash_table *htab;
3992 1.1.1.4 christos Elf_Internal_Shdr *symtab_hdr;
3993 1.1 christos struct elf_link_hash_entry **sym_hashes;
3994 1.1 christos const Elf_Internal_Rela *rel;
3995 1.1 christos const Elf_Internal_Rela *rel_end;
3996 1.1 christos asection *got2, *sreloc;
3997 1.1 christos struct elf_link_hash_entry *tga;
3998 1.1 christos
3999 1.1 christos if (bfd_link_relocatable (info))
4000 1.1 christos return TRUE;
4001 1.1 christos
4002 1.1 christos /* Don't do anything special with non-loaded, non-alloced sections.
4003 1.1 christos In particular, any relocs in such sections should not affect GOT
4004 1.1 christos and PLT reference counting (ie. we don't allow them to create GOT
4005 1.1 christos or PLT entries), there's no possibility or desire to optimize TLS
4006 1.1 christos relocs, and there's not much point in propagating relocs to shared
4007 1.1 christos libs that the dynamic linker won't relocate. */
4008 1.1 christos if ((sec->flags & SEC_ALLOC) == 0)
4009 1.1 christos return TRUE;
4010 1.1 christos
4011 1.1 christos #ifdef DEBUG
4012 1.1 christos _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
4013 1.1 christos sec, abfd);
4014 1.1 christos #endif
4015 1.1 christos
4016 1.1 christos BFD_ASSERT (is_ppc_elf (abfd));
4017 1.1 christos
4018 1.1 christos /* Initialize howto table if not already done. */
4019 1.1 christos if (!ppc_elf_howto_table[R_PPC_ADDR32])
4020 1.1 christos ppc_elf_howto_init ();
4021 1.1 christos
4022 1.1 christos htab = ppc_elf_hash_table (info);
4023 1.1 christos if (htab->glink == NULL)
4024 1.1 christos {
4025 1.1 christos if (htab->elf.dynobj == NULL)
4026 1.1 christos htab->elf.dynobj = abfd;
4027 1.1 christos if (!ppc_elf_create_glink (htab->elf.dynobj, info))
4028 1.1 christos return FALSE;
4029 1.1 christos }
4030 1.1 christos tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4031 1.1 christos FALSE, FALSE, TRUE);
4032 1.1 christos symtab_hdr = &elf_symtab_hdr (abfd);
4033 1.1 christos sym_hashes = elf_sym_hashes (abfd);
4034 1.1 christos got2 = bfd_get_section_by_name (abfd, ".got2");
4035 1.1 christos sreloc = NULL;
4036 1.1 christos
4037 1.1.1.4 christos rel_end = relocs + sec->reloc_count;
4038 1.1 christos for (rel = relocs; rel < rel_end; rel++)
4039 1.1 christos {
4040 1.1 christos unsigned long r_symndx;
4041 1.1 christos enum elf_ppc_reloc_type r_type;
4042 1.1 christos struct elf_link_hash_entry *h;
4043 1.1 christos int tls_type;
4044 1.1 christos struct plt_entry **ifunc;
4045 1.1 christos
4046 1.1 christos r_symndx = ELF32_R_SYM (rel->r_info);
4047 1.1 christos if (r_symndx < symtab_hdr->sh_info)
4048 1.1 christos h = NULL;
4049 1.1 christos else
4050 1.1 christos {
4051 1.1 christos h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4052 1.1 christos while (h->root.type == bfd_link_hash_indirect
4053 1.1 christos || h->root.type == bfd_link_hash_warning)
4054 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
4055 1.1 christos
4056 1.1 christos /* PR15323, ref flags aren't set for references in the same
4057 1.1 christos object. */
4058 1.1.1.5 christos h->root.non_ir_ref = 1;
4059 1.1 christos }
4060 1.1 christos
4061 1.1 christos /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4062 1.1 christos This shows up in particular in an R_PPC_ADDR32 in the eabi
4063 1.1 christos startup code. */
4064 1.1 christos if (h != NULL
4065 1.1 christos && htab->elf.sgot == NULL
4066 1.1 christos && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
4067 1.1 christos {
4068 1.1 christos if (htab->elf.dynobj == NULL)
4069 1.1 christos htab->elf.dynobj = abfd;
4070 1.1.1.4 christos if (!ppc_elf_create_got (htab->elf.dynobj, info))
4071 1.1 christos return FALSE;
4072 1.1 christos BFD_ASSERT (h == htab->elf.hgot);
4073 1.1 christos }
4074 1.1 christos
4075 1.1 christos tls_type = 0;
4076 1.1 christos r_type = ELF32_R_TYPE (rel->r_info);
4077 1.1 christos ifunc = NULL;
4078 1.1 christos if (h == NULL && !htab->is_vxworks)
4079 1.1 christos {
4080 1.1 christos Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4081 1.1 christos abfd, r_symndx);
4082 1.1 christos if (isym == NULL)
4083 1.1 christos return FALSE;
4084 1.1 christos
4085 1.1 christos if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4086 1.1 christos {
4087 1.1 christos /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4088 1.1 christos ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4089 1.1.1.4 christos PLT_IFUNC);
4090 1.1 christos if (ifunc == NULL)
4091 1.1 christos return FALSE;
4092 1.1 christos
4093 1.1 christos /* STT_GNU_IFUNC symbols must have a PLT entry;
4094 1.1 christos In a non-pie executable even when there are
4095 1.1 christos no plt calls. */
4096 1.1.1.4 christos if (!bfd_link_pic (info)
4097 1.1 christos || is_branch_reloc (r_type))
4098 1.1 christos {
4099 1.1 christos bfd_vma addend = 0;
4100 1.1 christos if (r_type == R_PPC_PLTREL24)
4101 1.1 christos {
4102 1.1 christos ppc_elf_tdata (abfd)->makes_plt_call = 1;
4103 1.1 christos if (bfd_link_pic (info))
4104 1.1 christos addend = rel->r_addend;
4105 1.1 christos }
4106 1.1 christos if (!update_plt_info (abfd, ifunc, got2, addend))
4107 1.1 christos return FALSE;
4108 1.1 christos }
4109 1.1 christos }
4110 1.1 christos }
4111 1.1 christos
4112 1.1 christos if (!htab->is_vxworks
4113 1.1 christos && is_branch_reloc (r_type)
4114 1.1 christos && h != NULL
4115 1.1 christos && h == tga)
4116 1.1 christos {
4117 1.1 christos if (rel != relocs
4118 1.1 christos && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
4119 1.1 christos || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
4120 1.1 christos /* We have a new-style __tls_get_addr call with a marker
4121 1.1 christos reloc. */
4122 1.1 christos ;
4123 1.1 christos else
4124 1.1 christos /* Mark this section as having an old-style call. */
4125 1.1 christos sec->has_tls_get_addr_call = 1;
4126 1.1 christos }
4127 1.1 christos
4128 1.1 christos switch (r_type)
4129 1.1 christos {
4130 1.1 christos case R_PPC_TLSGD:
4131 1.1 christos case R_PPC_TLSLD:
4132 1.1 christos /* These special tls relocs tie a call to __tls_get_addr with
4133 1.1 christos its parameter symbol. */
4134 1.1 christos break;
4135 1.1 christos
4136 1.1 christos case R_PPC_GOT_TLSLD16:
4137 1.1 christos case R_PPC_GOT_TLSLD16_LO:
4138 1.1 christos case R_PPC_GOT_TLSLD16_HI:
4139 1.1 christos case R_PPC_GOT_TLSLD16_HA:
4140 1.1 christos tls_type = TLS_TLS | TLS_LD;
4141 1.1 christos goto dogottls;
4142 1.1 christos
4143 1.1 christos case R_PPC_GOT_TLSGD16:
4144 1.1 christos case R_PPC_GOT_TLSGD16_LO:
4145 1.1 christos case R_PPC_GOT_TLSGD16_HI:
4146 1.1 christos case R_PPC_GOT_TLSGD16_HA:
4147 1.1.1.4 christos tls_type = TLS_TLS | TLS_GD;
4148 1.1 christos goto dogottls;
4149 1.1 christos
4150 1.1 christos case R_PPC_GOT_TPREL16:
4151 1.1 christos case R_PPC_GOT_TPREL16_LO:
4152 1.1 christos case R_PPC_GOT_TPREL16_HI:
4153 1.1 christos case R_PPC_GOT_TPREL16_HA:
4154 1.1 christos if (bfd_link_pic (info))
4155 1.1 christos info->flags |= DF_STATIC_TLS;
4156 1.1 christos tls_type = TLS_TLS | TLS_TPREL;
4157 1.1 christos goto dogottls;
4158 1.1 christos
4159 1.1.1.5 christos case R_PPC_GOT_DTPREL16:
4160 1.1 christos case R_PPC_GOT_DTPREL16_LO:
4161 1.1 christos case R_PPC_GOT_DTPREL16_HI:
4162 1.1 christos case R_PPC_GOT_DTPREL16_HA:
4163 1.1 christos tls_type = TLS_TLS | TLS_DTPREL;
4164 1.1 christos dogottls:
4165 1.1 christos sec->has_tls_reloc = 1;
4166 1.1 christos /* Fall through. */
4167 1.1.1.5 christos
4168 1.1 christos /* GOT16 relocations */
4169 1.1 christos case R_PPC_GOT16:
4170 1.1 christos case R_PPC_GOT16_LO:
4171 1.1 christos case R_PPC_GOT16_HI:
4172 1.1 christos case R_PPC_GOT16_HA:
4173 1.1 christos /* This symbol requires a global offset table entry. */
4174 1.1 christos if (htab->elf.sgot == NULL)
4175 1.1 christos {
4176 1.1 christos if (htab->elf.dynobj == NULL)
4177 1.1 christos htab->elf.dynobj = abfd;
4178 1.1 christos if (!ppc_elf_create_got (htab->elf.dynobj, info))
4179 1.1 christos return FALSE;
4180 1.1 christos }
4181 1.1 christos if (h != NULL)
4182 1.1 christos {
4183 1.1 christos h->got.refcount += 1;
4184 1.1 christos ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4185 1.1 christos }
4186 1.1.1.4 christos else
4187 1.1 christos /* This is a global offset table entry for a local symbol. */
4188 1.1 christos if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4189 1.1 christos return FALSE;
4190 1.1 christos
4191 1.1 christos /* We may also need a plt entry if the symbol turns out to be
4192 1.1 christos an ifunc. */
4193 1.1 christos if (h != NULL && !bfd_link_pic (info))
4194 1.1 christos {
4195 1.1.1.4 christos if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4196 1.1 christos return FALSE;
4197 1.1 christos }
4198 1.1 christos break;
4199 1.1 christos
4200 1.1.1.2 christos /* Indirect .sdata relocation. */
4201 1.1.1.2 christos case R_PPC_EMB_SDAI16:
4202 1.1.1.2 christos if (bfd_link_pic (info))
4203 1.1 christos {
4204 1.1 christos bad_shared_reloc (abfd, r_type);
4205 1.1 christos return FALSE;
4206 1.1 christos }
4207 1.1 christos htab->sdata[0].sym->ref_regular = 1;
4208 1.1 christos if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4209 1.1 christos h, rel))
4210 1.1 christos return FALSE;
4211 1.1 christos if (h != NULL)
4212 1.1 christos {
4213 1.1.1.4 christos ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4214 1.1 christos h->non_got_ref = TRUE;
4215 1.1 christos }
4216 1.1 christos break;
4217 1.1 christos
4218 1.1.1.2 christos /* Indirect .sdata2 relocation. */
4219 1.1.1.2 christos case R_PPC_EMB_SDA2I16:
4220 1.1.1.2 christos if (bfd_link_pic (info))
4221 1.1 christos {
4222 1.1 christos bad_shared_reloc (abfd, r_type);
4223 1.1 christos return FALSE;
4224 1.1 christos }
4225 1.1 christos htab->sdata[1].sym->ref_regular = 1;
4226 1.1 christos if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4227 1.1 christos h, rel))
4228 1.1 christos return FALSE;
4229 1.1.1.2 christos if (h != NULL)
4230 1.1.1.2 christos {
4231 1.1.1.5 christos ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4232 1.1.1.2 christos h->non_got_ref = TRUE;
4233 1.1 christos }
4234 1.1 christos break;
4235 1.1 christos
4236 1.1 christos case R_PPC_SDAREL16:
4237 1.1 christos htab->sdata[0].sym->ref_regular = 1;
4238 1.1 christos /* Fall through. */
4239 1.1 christos
4240 1.1 christos case R_PPC_VLE_SDAREL_LO16A:
4241 1.1 christos case R_PPC_VLE_SDAREL_LO16D:
4242 1.1 christos case R_PPC_VLE_SDAREL_HI16A:
4243 1.1 christos case R_PPC_VLE_SDAREL_HI16D:
4244 1.1 christos case R_PPC_VLE_SDAREL_HA16A:
4245 1.1 christos case R_PPC_VLE_SDAREL_HA16D:
4246 1.1 christos if (h != NULL)
4247 1.1 christos {
4248 1.1 christos ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4249 1.1 christos h->non_got_ref = TRUE;
4250 1.1 christos }
4251 1.1 christos break;
4252 1.1 christos
4253 1.1 christos case R_PPC_VLE_REL8:
4254 1.1 christos case R_PPC_VLE_REL15:
4255 1.1 christos case R_PPC_VLE_REL24:
4256 1.1 christos case R_PPC_VLE_LO16A:
4257 1.1 christos case R_PPC_VLE_LO16D:
4258 1.1.1.4 christos case R_PPC_VLE_HI16A:
4259 1.1 christos case R_PPC_VLE_HI16D:
4260 1.1 christos case R_PPC_VLE_HA16A:
4261 1.1 christos case R_PPC_VLE_HA16D:
4262 1.1 christos break;
4263 1.1.1.2 christos
4264 1.1 christos case R_PPC_EMB_SDA2REL:
4265 1.1 christos if (bfd_link_pic (info))
4266 1.1 christos {
4267 1.1 christos bad_shared_reloc (abfd, r_type);
4268 1.1 christos return FALSE;
4269 1.1 christos }
4270 1.1 christos htab->sdata[1].sym->ref_regular = 1;
4271 1.1 christos if (h != NULL)
4272 1.1 christos {
4273 1.1 christos ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4274 1.1 christos h->non_got_ref = TRUE;
4275 1.1.1.4 christos }
4276 1.1 christos break;
4277 1.1 christos
4278 1.1 christos case R_PPC_VLE_SDA21_LO:
4279 1.1 christos case R_PPC_VLE_SDA21:
4280 1.1 christos case R_PPC_EMB_SDA21:
4281 1.1 christos case R_PPC_EMB_RELSDA:
4282 1.1 christos if (bfd_link_pic (info))
4283 1.1 christos {
4284 1.1 christos bad_shared_reloc (abfd, r_type);
4285 1.1 christos return FALSE;
4286 1.1 christos }
4287 1.1 christos if (h != NULL)
4288 1.1 christos {
4289 1.1 christos ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4290 1.1 christos h->non_got_ref = TRUE;
4291 1.1 christos }
4292 1.1.1.4 christos break;
4293 1.1 christos
4294 1.1 christos case R_PPC_EMB_NADDR32:
4295 1.1 christos case R_PPC_EMB_NADDR16:
4296 1.1 christos case R_PPC_EMB_NADDR16_LO:
4297 1.1 christos case R_PPC_EMB_NADDR16_HI:
4298 1.1 christos case R_PPC_EMB_NADDR16_HA:
4299 1.1 christos if (bfd_link_pic (info))
4300 1.1 christos {
4301 1.1 christos bad_shared_reloc (abfd, r_type);
4302 1.1 christos return FALSE;
4303 1.1 christos }
4304 1.1 christos if (h != NULL)
4305 1.1 christos h->non_got_ref = TRUE;
4306 1.1 christos break;
4307 1.1 christos
4308 1.1 christos case R_PPC_PLTREL24:
4309 1.1 christos if (h == NULL)
4310 1.1 christos break;
4311 1.1 christos /* Fall through */
4312 1.1 christos case R_PPC_PLT32:
4313 1.1.1.4 christos case R_PPC_PLTREL32:
4314 1.1 christos case R_PPC_PLT16_LO:
4315 1.1 christos case R_PPC_PLT16_HI:
4316 1.1.1.4 christos case R_PPC_PLT16_HA:
4317 1.1.1.4 christos #ifdef DEBUG
4318 1.1.1.4 christos fprintf (stderr, "Reloc requires a PLT entry\n");
4319 1.1.1.4 christos #endif
4320 1.1.1.4 christos /* This symbol requires a procedure linkage table entry. */
4321 1.1.1.5 christos if (h == NULL)
4322 1.1.1.5 christos {
4323 1.1.1.4 christos if (ifunc == NULL)
4324 1.1.1.4 christos {
4325 1.1.1.4 christos /* It does not make sense to have a procedure linkage
4326 1.1.1.4 christos table entry for a non-ifunc local symbol. */
4327 1.1.1.4 christos info->callbacks->einfo
4328 1.1 christos /* xgettext:c-format */
4329 1.1 christos (_("%H: %s reloc against local symbol\n"),
4330 1.1 christos abfd, sec, rel->r_offset,
4331 1.1 christos ppc_elf_howto_table[r_type]->name);
4332 1.1 christos bfd_set_error (bfd_error_bad_value);
4333 1.1 christos return FALSE;
4334 1.1 christos }
4335 1.1 christos }
4336 1.1.1.4 christos else
4337 1.1 christos {
4338 1.1 christos bfd_vma addend = 0;
4339 1.1 christos
4340 1.1 christos if (r_type == R_PPC_PLTREL24)
4341 1.1 christos {
4342 1.1 christos ppc_elf_tdata (abfd)->makes_plt_call = 1;
4343 1.1 christos if (bfd_link_pic (info))
4344 1.1 christos addend = rel->r_addend;
4345 1.1 christos }
4346 1.1 christos h->needs_plt = 1;
4347 1.1 christos if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4348 1.1 christos return FALSE;
4349 1.1 christos }
4350 1.1 christos break;
4351 1.1 christos
4352 1.1 christos /* The following relocations don't need to propagate the
4353 1.1 christos relocation if linking a shared object since they are
4354 1.1 christos section relative. */
4355 1.1 christos case R_PPC_SECTOFF:
4356 1.1 christos case R_PPC_SECTOFF_LO:
4357 1.1 christos case R_PPC_SECTOFF_HI:
4358 1.1 christos case R_PPC_SECTOFF_HA:
4359 1.1 christos case R_PPC_DTPREL16:
4360 1.1 christos case R_PPC_DTPREL16_LO:
4361 1.1 christos case R_PPC_DTPREL16_HI:
4362 1.1 christos case R_PPC_DTPREL16_HA:
4363 1.1.1.4 christos case R_PPC_TOC16:
4364 1.1 christos break;
4365 1.1 christos
4366 1.1 christos case R_PPC_REL16:
4367 1.1 christos case R_PPC_REL16_LO:
4368 1.1 christos case R_PPC_REL16_HI:
4369 1.1 christos case R_PPC_REL16_HA:
4370 1.1 christos case R_PPC_REL16DX_HA:
4371 1.1 christos ppc_elf_tdata (abfd)->has_rel16 = 1;
4372 1.1 christos break;
4373 1.1 christos
4374 1.1 christos /* These are just markers. */
4375 1.1.1.5 christos case R_PPC_TLS:
4376 1.1 christos case R_PPC_EMB_MRKREF:
4377 1.1 christos case R_PPC_NONE:
4378 1.1 christos case R_PPC_max:
4379 1.1 christos case R_PPC_RELAX:
4380 1.1 christos case R_PPC_RELAX_PLT:
4381 1.1 christos case R_PPC_RELAX_PLTREL24:
4382 1.1 christos case R_PPC_16DX_HA:
4383 1.1 christos break;
4384 1.1 christos
4385 1.1 christos /* These should only appear in dynamic objects. */
4386 1.1 christos case R_PPC_COPY:
4387 1.1 christos case R_PPC_GLOB_DAT:
4388 1.1 christos case R_PPC_JMP_SLOT:
4389 1.1 christos case R_PPC_RELATIVE:
4390 1.1 christos case R_PPC_IRELATIVE:
4391 1.1 christos break;
4392 1.1 christos
4393 1.1 christos /* These aren't handled yet. We'll report an error later. */
4394 1.1 christos case R_PPC_ADDR30:
4395 1.1 christos case R_PPC_EMB_RELSEC16:
4396 1.1 christos case R_PPC_EMB_RELST_LO:
4397 1.1 christos case R_PPC_EMB_RELST_HI:
4398 1.1 christos case R_PPC_EMB_RELST_HA:
4399 1.1 christos case R_PPC_EMB_BIT_FLD:
4400 1.1 christos break;
4401 1.1 christos
4402 1.1.1.2 christos /* This refers only to functions defined in the shared library. */
4403 1.1.1.2 christos case R_PPC_LOCAL24PC:
4404 1.1.1.2 christos if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4405 1.1.1.2 christos {
4406 1.1.1.2 christos htab->plt_type = PLT_OLD;
4407 1.1.1.2 christos htab->old_bfd = abfd;
4408 1.1 christos }
4409 1.1 christos if (h != NULL && h->type == STT_GNU_IFUNC)
4410 1.1 christos {
4411 1.1 christos h->needs_plt = 1;
4412 1.1 christos if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4413 1.1 christos return FALSE;
4414 1.1 christos }
4415 1.1 christos break;
4416 1.1 christos
4417 1.1 christos /* This relocation describes the C++ object vtable hierarchy.
4418 1.1 christos Reconstruct it for later use during GC. */
4419 1.1 christos case R_PPC_GNU_VTINHERIT:
4420 1.1 christos if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4421 1.1 christos return FALSE;
4422 1.1 christos break;
4423 1.1 christos
4424 1.1 christos /* This relocation describes which C++ vtable entries are actually
4425 1.1 christos used. Record for later use during GC. */
4426 1.1 christos case R_PPC_GNU_VTENTRY:
4427 1.1 christos BFD_ASSERT (h != NULL);
4428 1.1 christos if (h != NULL
4429 1.1 christos && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4430 1.1 christos return FALSE;
4431 1.1 christos break;
4432 1.1.1.4 christos
4433 1.1 christos /* We shouldn't really be seeing these. */
4434 1.1 christos case R_PPC_TPREL32:
4435 1.1 christos case R_PPC_TPREL16:
4436 1.1 christos case R_PPC_TPREL16_LO:
4437 1.1 christos case R_PPC_TPREL16_HI:
4438 1.1 christos case R_PPC_TPREL16_HA:
4439 1.1 christos if (bfd_link_pic (info))
4440 1.1 christos info->flags |= DF_STATIC_TLS;
4441 1.1 christos goto dodyn;
4442 1.1 christos
4443 1.1 christos /* Nor these. */
4444 1.1 christos case R_PPC_DTPMOD32:
4445 1.1.1.4 christos case R_PPC_DTPREL32:
4446 1.1 christos goto dodyn;
4447 1.1 christos
4448 1.1 christos case R_PPC_REL32:
4449 1.1 christos if (h == NULL
4450 1.1 christos && got2 != NULL
4451 1.1 christos && (sec->flags & SEC_CODE) != 0
4452 1.1 christos && bfd_link_pic (info)
4453 1.1 christos && htab->plt_type == PLT_UNSET)
4454 1.1 christos {
4455 1.1 christos /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4456 1.1 christos the start of a function, which assembles to a REL32
4457 1.1 christos reference to .got2. If we detect one of these, then
4458 1.1 christos force the old PLT layout because the linker cannot
4459 1.1 christos reliably deduce the GOT pointer value needed for
4460 1.1 christos PLT call stubs. */
4461 1.1 christos asection *s;
4462 1.1 christos Elf_Internal_Sym *isym;
4463 1.1 christos
4464 1.1 christos isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4465 1.1 christos abfd, r_symndx);
4466 1.1 christos if (isym == NULL)
4467 1.1 christos return FALSE;
4468 1.1 christos
4469 1.1 christos s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4470 1.1 christos if (s == got2)
4471 1.1 christos {
4472 1.1 christos htab->plt_type = PLT_OLD;
4473 1.1 christos htab->old_bfd = abfd;
4474 1.1 christos }
4475 1.1 christos }
4476 1.1 christos if (h == NULL || h == htab->elf.hgot)
4477 1.1 christos break;
4478 1.1 christos /* fall through */
4479 1.1 christos
4480 1.1.1.4 christos case R_PPC_ADDR32:
4481 1.1 christos case R_PPC_ADDR16:
4482 1.1 christos case R_PPC_ADDR16_LO:
4483 1.1 christos case R_PPC_ADDR16_HI:
4484 1.1 christos case R_PPC_ADDR16_HA:
4485 1.1 christos case R_PPC_UADDR32:
4486 1.1 christos case R_PPC_UADDR16:
4487 1.1 christos if (h != NULL && !bfd_link_pic (info))
4488 1.1 christos {
4489 1.1 christos /* We may need a plt entry if the symbol turns out to be
4490 1.1.1.3 christos a function defined in a dynamic object. */
4491 1.1.1.3 christos if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4492 1.1.1.3 christos return FALSE;
4493 1.1.1.3 christos
4494 1.1 christos /* We may need a copy reloc too. */
4495 1.1 christos h->non_got_ref = 1;
4496 1.1 christos h->pointer_equality_needed = 1;
4497 1.1 christos if (r_type == R_PPC_ADDR16_HA)
4498 1.1 christos ppc_elf_hash_entry (h)->has_addr16_ha = 1;
4499 1.1 christos if (r_type == R_PPC_ADDR16_LO)
4500 1.1 christos ppc_elf_hash_entry (h)->has_addr16_lo = 1;
4501 1.1 christos }
4502 1.1 christos goto dodyn;
4503 1.1 christos
4504 1.1 christos case R_PPC_REL24:
4505 1.1 christos case R_PPC_REL14:
4506 1.1 christos case R_PPC_REL14_BRTAKEN:
4507 1.1 christos case R_PPC_REL14_BRNTAKEN:
4508 1.1 christos if (h == NULL)
4509 1.1 christos break;
4510 1.1 christos if (h == htab->elf.hgot)
4511 1.1 christos {
4512 1.1 christos if (htab->plt_type == PLT_UNSET)
4513 1.1 christos {
4514 1.1 christos htab->plt_type = PLT_OLD;
4515 1.1 christos htab->old_bfd = abfd;
4516 1.1 christos }
4517 1.1 christos break;
4518 1.1.1.4 christos }
4519 1.1 christos /* fall through */
4520 1.1 christos
4521 1.1 christos case R_PPC_ADDR24:
4522 1.1 christos case R_PPC_ADDR14:
4523 1.1 christos case R_PPC_ADDR14_BRTAKEN:
4524 1.1 christos case R_PPC_ADDR14_BRNTAKEN:
4525 1.1 christos if (h != NULL && !bfd_link_pic (info))
4526 1.1 christos {
4527 1.1 christos /* We may need a plt entry if the symbol turns out to be
4528 1.1 christos a function defined in a dynamic object. */
4529 1.1 christos h->needs_plt = 1;
4530 1.1 christos if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4531 1.1 christos return FALSE;
4532 1.1 christos break;
4533 1.1 christos }
4534 1.1 christos
4535 1.1 christos dodyn:
4536 1.1 christos /* If we are creating a shared library, and this is a reloc
4537 1.1 christos against a global symbol, or a non PC relative reloc
4538 1.1 christos against a local symbol, then we need to copy the reloc
4539 1.1 christos into the shared library. However, if we are linking with
4540 1.1 christos -Bsymbolic, we do not need to copy a reloc against a
4541 1.1 christos global symbol which is defined in an object we are
4542 1.1 christos including in the link (i.e., DEF_REGULAR is set). At
4543 1.1 christos this point we have not seen all the input files, so it is
4544 1.1 christos possible that DEF_REGULAR is not set now but will be set
4545 1.1 christos later (it is never cleared). In case of a weak definition,
4546 1.1 christos DEF_REGULAR may be cleared later by a strong definition in
4547 1.1 christos a shared library. We account for that possibility below by
4548 1.1 christos storing information in the dyn_relocs field of the hash
4549 1.1 christos table entry. A similar situation occurs when creating
4550 1.1.1.4 christos shared libraries and symbol visibility changes render the
4551 1.1 christos symbol local.
4552 1.1 christos
4553 1.1 christos If on the other hand, we are creating an executable, we
4554 1.1 christos may need to keep relocations for symbols satisfied by a
4555 1.1 christos dynamic library if we manage to avoid copy relocs for the
4556 1.1 christos symbol. */
4557 1.1.1.4 christos if ((bfd_link_pic (info)
4558 1.1 christos && (must_be_dyn_reloc (info, r_type)
4559 1.1 christos || (h != NULL
4560 1.1 christos && (!SYMBOLIC_BIND (info, h)
4561 1.1 christos || h->root.type == bfd_link_hash_defweak
4562 1.1 christos || !h->def_regular))))
4563 1.1 christos || (ELIMINATE_COPY_RELOCS
4564 1.1 christos && !bfd_link_pic (info)
4565 1.1 christos && h != NULL
4566 1.1 christos && (h->root.type == bfd_link_hash_defweak
4567 1.1 christos || !h->def_regular)))
4568 1.1 christos {
4569 1.1 christos #ifdef DEBUG
4570 1.1 christos fprintf (stderr,
4571 1.1 christos "ppc_elf_check_relocs needs to "
4572 1.1 christos "create relocation for %s\n",
4573 1.1 christos (h && h->root.root.string
4574 1.1 christos ? h->root.root.string : "<unknown>"));
4575 1.1 christos #endif
4576 1.1 christos if (sreloc == NULL)
4577 1.1 christos {
4578 1.1 christos if (htab->elf.dynobj == NULL)
4579 1.1 christos htab->elf.dynobj = abfd;
4580 1.1 christos
4581 1.1 christos sreloc = _bfd_elf_make_dynamic_reloc_section
4582 1.1 christos (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4583 1.1 christos
4584 1.1 christos if (sreloc == NULL)
4585 1.1 christos return FALSE;
4586 1.1 christos }
4587 1.1 christos
4588 1.1 christos /* If this is a global symbol, we count the number of
4589 1.1 christos relocations we need for this symbol. */
4590 1.1 christos if (h != NULL)
4591 1.1 christos {
4592 1.1 christos struct elf_dyn_relocs *p;
4593 1.1 christos struct elf_dyn_relocs **rel_head;
4594 1.1 christos
4595 1.1 christos rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4596 1.1 christos p = *rel_head;
4597 1.1 christos if (p == NULL || p->sec != sec)
4598 1.1 christos {
4599 1.1 christos p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4600 1.1 christos if (p == NULL)
4601 1.1 christos return FALSE;
4602 1.1 christos p->next = *rel_head;
4603 1.1 christos *rel_head = p;
4604 1.1 christos p->sec = sec;
4605 1.1 christos p->count = 0;
4606 1.1 christos p->pc_count = 0;
4607 1.1 christos }
4608 1.1 christos p->count += 1;
4609 1.1 christos if (!must_be_dyn_reloc (info, r_type))
4610 1.1 christos p->pc_count += 1;
4611 1.1 christos }
4612 1.1 christos else
4613 1.1 christos {
4614 1.1 christos /* Track dynamic relocs needed for local syms too.
4615 1.1 christos We really need local syms available to do this
4616 1.1 christos easily. Oh well. */
4617 1.1 christos struct ppc_dyn_relocs *p;
4618 1.1 christos struct ppc_dyn_relocs **rel_head;
4619 1.1 christos bfd_boolean is_ifunc;
4620 1.1 christos asection *s;
4621 1.1 christos void *vpp;
4622 1.1 christos Elf_Internal_Sym *isym;
4623 1.1 christos
4624 1.1 christos isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4625 1.1 christos abfd, r_symndx);
4626 1.1 christos if (isym == NULL)
4627 1.1 christos return FALSE;
4628 1.1 christos
4629 1.1 christos s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4630 1.1 christos if (s == NULL)
4631 1.1 christos s = sec;
4632 1.1 christos
4633 1.1 christos vpp = &elf_section_data (s)->local_dynrel;
4634 1.1 christos rel_head = (struct ppc_dyn_relocs **) vpp;
4635 1.1 christos is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4636 1.1 christos p = *rel_head;
4637 1.1 christos if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4638 1.1 christos p = p->next;
4639 1.1 christos if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4640 1.1 christos {
4641 1.1 christos p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4642 1.1 christos if (p == NULL)
4643 1.1 christos return FALSE;
4644 1.1 christos p->next = *rel_head;
4645 1.1 christos *rel_head = p;
4646 1.1 christos p->sec = sec;
4647 1.1 christos p->ifunc = is_ifunc;
4648 1.1 christos p->count = 0;
4649 1.1 christos }
4650 1.1 christos p->count += 1;
4651 1.1 christos }
4652 1.1 christos }
4653 1.1 christos
4654 1.1.1.5 christos break;
4655 1.1.1.5 christos }
4656 1.1.1.5 christos }
4657 1.1.1.5 christos
4658 1.1 christos return TRUE;
4659 1.1.1.5 christos }
4660 1.1 christos
4661 1.1 christos /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
4663 1.1 christos and OBFD, and merge non-conflicting ones. */
4664 1.1 christos void
4665 1.1 christos _bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, struct bfd_link_info *info)
4666 1.1 christos {
4667 1.1 christos bfd *obfd = info->output_bfd;
4668 1.1.1.5 christos obj_attribute *in_attr, *in_attrs;
4669 1.1 christos obj_attribute *out_attr, *out_attrs;
4670 1.1 christos
4671 1.1.1.5 christos in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4672 1.1.1.5 christos out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4673 1.1.1.5 christos
4674 1.1.1.5 christos in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4675 1.1 christos out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4676 1.1.1.5 christos
4677 1.1.1.5 christos if (in_attr->i != out_attr->i)
4678 1.1.1.5 christos {
4679 1.1.1.5 christos int in_fp = in_attr->i & 3;
4680 1.1.1.5 christos int out_fp = out_attr->i & 3;
4681 1.1.1.5 christos
4682 1.1 christos if (in_fp == 0)
4683 1.1.1.5 christos ;
4684 1.1 christos else if (out_fp == 0)
4685 1.1.1.5 christos {
4686 1.1 christos out_attr->type = 1;
4687 1.1.1.5 christos out_attr->i ^= in_fp;
4688 1.1.1.5 christos }
4689 1.1.1.5 christos else if (out_fp != 2 && in_fp == 2)
4690 1.1 christos _bfd_error_handler
4691 1.1.1.5 christos /* xgettext:c-format */
4692 1.1.1.5 christos (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4693 1.1.1.5 christos else if (out_fp == 2 && in_fp != 2)
4694 1.1.1.5 christos _bfd_error_handler
4695 1.1 christos /* xgettext:c-format */
4696 1.1.1.5 christos (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4697 1.1.1.5 christos else if (out_fp == 1 && in_fp == 3)
4698 1.1.1.5 christos _bfd_error_handler
4699 1.1.1.5 christos /* xgettext:c-format */
4700 1.1.1.5 christos (_("Warning: %B uses double-precision hard float, "
4701 1.1.1.5 christos "%B uses single-precision hard float"), obfd, ibfd);
4702 1.1.1.5 christos else if (out_fp == 3 && in_fp == 1)
4703 1.1.1.5 christos _bfd_error_handler
4704 1.1.1.5 christos /* xgettext:c-format */
4705 1.1.1.5 christos (_("Warning: %B uses double-precision hard float, "
4706 1.1.1.5 christos "%B uses single-precision hard float"), ibfd, obfd);
4707 1.1.1.5 christos
4708 1.1.1.5 christos in_fp = in_attr->i & 0xc;
4709 1.1.1.5 christos out_fp = out_attr->i & 0xc;
4710 1.1 christos if (in_fp == 0)
4711 1.1.1.5 christos ;
4712 1.1.1.5 christos else if (out_fp == 0)
4713 1.1.1.5 christos {
4714 1.1.1.5 christos out_attr->type = 1;
4715 1.1 christos out_attr->i ^= in_fp;
4716 1.1.1.5 christos }
4717 1.1.1.5 christos else if (out_fp != 2 * 4 && in_fp == 2 * 4)
4718 1.1.1.5 christos _bfd_error_handler
4719 1.1.1.5 christos /* xgettext:c-format */
4720 1.1 christos (_("Warning: %B uses 64-bit long double, "
4721 1.1.1.5 christos "%B uses 128-bit long double"), ibfd, obfd);
4722 1.1.1.5 christos else if (in_fp != 2 * 4 && out_fp == 2 * 4)
4723 1.1.1.5 christos _bfd_error_handler
4724 1.1.1.5 christos /* xgettext:c-format */
4725 1.1.1.5 christos (_("Warning: %B uses 64-bit long double, "
4726 1.1.1.5 christos "%B uses 128-bit long double"), obfd, ibfd);
4727 1.1.1.5 christos else if (out_fp == 1 * 4 && in_fp == 3 * 4)
4728 1.1.1.5 christos _bfd_error_handler
4729 1.1 christos /* xgettext:c-format */
4730 1.1.1.5 christos (_("Warning: %B uses IBM long double, "
4731 1.1.1.5 christos "%B uses IEEE long double"), ibfd, obfd);
4732 1.1.1.5 christos else if (out_fp == 3 * 4 && in_fp == 1 * 4)
4733 1.1.1.5 christos _bfd_error_handler
4734 1.1.1.5 christos /* xgettext:c-format */
4735 1.1.1.5 christos (_("Warning: %B uses IBM long double, "
4736 1.1.1.5 christos "%B uses IEEE long double"), obfd, ibfd);
4737 1.1.1.5 christos }
4738 1.1.1.5 christos }
4739 1.1.1.5 christos
4740 1.1.1.5 christos /* Merge object attributes from IBFD into OBFD. Warn if
4741 1.1.1.5 christos there are conflicting attributes. */
4742 1.1.1.5 christos static bfd_boolean
4743 1.1.1.5 christos ppc_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info)
4744 1.1.1.5 christos {
4745 1.1.1.5 christos bfd *obfd;
4746 1.1 christos obj_attribute *in_attr, *in_attrs;
4747 1.1 christos obj_attribute *out_attr, *out_attrs;
4748 1.1 christos
4749 1.1 christos _bfd_elf_ppc_merge_fp_attributes (ibfd, info);
4750 1.1 christos
4751 1.1 christos obfd = info->output_bfd;
4752 1.1 christos in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4753 1.1.1.5 christos out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4754 1.1.1.5 christos
4755 1.1 christos /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4756 1.1.1.5 christos merge non-conflicting ones. */
4757 1.1.1.5 christos in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4758 1.1.1.5 christos out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4759 1.1 christos if (in_attr->i != out_attr->i)
4760 1.1.1.5 christos {
4761 1.1.1.5 christos int in_vec = in_attr->i & 3;
4762 1.1 christos int out_vec = out_attr->i & 3;
4763 1.1 christos
4764 1.1 christos if (in_vec == 0)
4765 1.1 christos ;
4766 1.1 christos else if (out_vec == 0)
4767 1.1 christos {
4768 1.1.1.5 christos out_attr->type = 1;
4769 1.1 christos out_attr->i = in_vec;
4770 1.1.1.5 christos }
4771 1.1.1.5 christos /* For now, allow generic to transition to AltiVec or SPE
4772 1.1.1.5 christos without a warning. If GCC marked files with their stack
4773 1.1.1.5 christos alignment and used don't-care markings for files which are
4774 1.1.1.5 christos not affected by the vector ABI, we could warn about this
4775 1.1.1.5 christos case too. */
4776 1.1 christos else if (in_vec == 1)
4777 1.1.1.5 christos ;
4778 1.1.1.5 christos else if (out_vec == 1)
4779 1.1.1.5 christos {
4780 1.1.1.5 christos out_attr->type = 1;
4781 1.1 christos out_attr->i = in_vec;
4782 1.1.1.5 christos }
4783 1.1.1.5 christos else if (out_vec < in_vec)
4784 1.1.1.5 christos _bfd_error_handler
4785 1.1 christos /* xgettext:c-format */
4786 1.1 christos (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4787 1.1 christos obfd, ibfd);
4788 1.1 christos else if (out_vec > in_vec)
4789 1.1 christos _bfd_error_handler
4790 1.1 christos /* xgettext:c-format */
4791 1.1 christos (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4792 1.1 christos ibfd, obfd);
4793 1.1.1.5 christos }
4794 1.1.1.5 christos
4795 1.1.1.5 christos /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4796 1.1.1.5 christos and merge non-conflicting ones. */
4797 1.1 christos in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4798 1.1.1.5 christos out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4799 1.1.1.5 christos if (in_attr->i != out_attr->i)
4800 1.1.1.5 christos {
4801 1.1.1.5 christos int in_struct = in_attr->i & 3;
4802 1.1.1.5 christos int out_struct = out_attr->i & 3;
4803 1.1.1.5 christos
4804 1.1.1.5 christos if (in_struct == 0 || in_struct == 3)
4805 1.1.1.5 christos ;
4806 1.1.1.5 christos else if (out_struct == 0)
4807 1.1.1.5 christos {
4808 1.1.1.5 christos out_attr->type = 1;
4809 1.1.1.5 christos out_attr->i = in_struct;
4810 1.1.1.5 christos }
4811 1.1.1.5 christos else if (out_struct < in_struct)
4812 1.1.1.5 christos _bfd_error_handler
4813 1.1 christos /* xgettext:c-format */
4814 1.1 christos (_("Warning: %B uses r3/r4 for small structure returns, "
4815 1.1 christos "%B uses memory"), obfd, ibfd);
4816 1.1.1.5 christos else if (out_struct > in_struct)
4817 1.1 christos _bfd_error_handler
4818 1.1 christos /* xgettext:c-format */
4819 1.1 christos (_("Warning: %B uses r3/r4 for small structure returns, "
4820 1.1 christos "%B uses memory"), ibfd, obfd);
4821 1.1 christos }
4822 1.1 christos
4823 1.1 christos /* Merge Tag_compatibility attributes and any common GNU ones. */
4824 1.1 christos _bfd_elf_merge_object_attributes (ibfd, info);
4825 1.1.1.5 christos
4826 1.1 christos return TRUE;
4827 1.1.1.5 christos }
4828 1.1 christos
4829 1.1 christos /* Merge backend specific data from an object file to the output
4830 1.1 christos object file when linking. */
4831 1.1 christos
4832 1.1 christos static bfd_boolean
4833 1.1 christos ppc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4834 1.1 christos {
4835 1.1 christos bfd *obfd = info->output_bfd;
4836 1.1.1.5 christos flagword old_flags;
4837 1.1 christos flagword new_flags;
4838 1.1 christos bfd_boolean error;
4839 1.1.1.5 christos
4840 1.1 christos if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4841 1.1 christos return TRUE;
4842 1.1 christos
4843 1.1 christos /* Check if we have the same endianness. */
4844 1.1 christos if (! _bfd_generic_verify_endian_match (ibfd, info))
4845 1.1 christos return FALSE;
4846 1.1 christos
4847 1.1 christos if (!ppc_elf_merge_obj_attributes (ibfd, info))
4848 1.1 christos return FALSE;
4849 1.1 christos
4850 1.1 christos new_flags = elf_elfheader (ibfd)->e_flags;
4851 1.1 christos old_flags = elf_elfheader (obfd)->e_flags;
4852 1.1 christos if (!elf_flags_init (obfd))
4853 1.1 christos {
4854 1.1 christos /* First call, no flags set. */
4855 1.1 christos elf_flags_init (obfd) = TRUE;
4856 1.1 christos elf_elfheader (obfd)->e_flags = new_flags;
4857 1.1 christos }
4858 1.1 christos
4859 1.1 christos /* Compatible flags are ok. */
4860 1.1 christos else if (new_flags == old_flags)
4861 1.1 christos ;
4862 1.1 christos
4863 1.1 christos /* Incompatible flags. */
4864 1.1 christos else
4865 1.1.1.5 christos {
4866 1.1 christos /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4867 1.1 christos to be linked with either. */
4868 1.1 christos error = FALSE;
4869 1.1 christos if ((new_flags & EF_PPC_RELOCATABLE) != 0
4870 1.1 christos && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4871 1.1 christos {
4872 1.1 christos error = TRUE;
4873 1.1.1.5 christos _bfd_error_handler
4874 1.1 christos (_("%B: compiled with -mrelocatable and linked with "
4875 1.1 christos "modules compiled normally"), ibfd);
4876 1.1 christos }
4877 1.1 christos else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4878 1.1 christos && (old_flags & EF_PPC_RELOCATABLE) != 0)
4879 1.1 christos {
4880 1.1 christos error = TRUE;
4881 1.1 christos _bfd_error_handler
4882 1.1 christos (_("%B: compiled normally and linked with "
4883 1.1 christos "modules compiled with -mrelocatable"), ibfd);
4884 1.1 christos }
4885 1.1 christos
4886 1.1 christos /* The output is -mrelocatable-lib iff both the input files are. */
4887 1.1 christos if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4888 1.1 christos elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4889 1.1 christos
4890 1.1 christos /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4891 1.1 christos but each input file is either -mrelocatable or -mrelocatable-lib. */
4892 1.1 christos if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4893 1.1 christos && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4894 1.1 christos && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4895 1.1 christos elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4896 1.1 christos
4897 1.1 christos /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4898 1.1 christos any module uses it. */
4899 1.1 christos elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4900 1.1.1.5 christos
4901 1.1.1.5 christos new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4902 1.1 christos old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4903 1.1 christos
4904 1.1 christos /* Warn about any other mismatches. */
4905 1.1 christos if (new_flags != old_flags)
4906 1.1 christos {
4907 1.1 christos error = TRUE;
4908 1.1 christos _bfd_error_handler
4909 1.1 christos /* xgettext:c-format */
4910 1.1 christos (_("%B: uses different e_flags (0x%lx) fields "
4911 1.1 christos "than previous modules (0x%lx)"),
4912 1.1 christos ibfd, (long) new_flags, (long) old_flags);
4913 1.1 christos }
4914 1.1 christos
4915 1.1 christos if (error)
4916 1.1 christos {
4917 1.1 christos bfd_set_error (bfd_error_bad_value);
4918 1.1.1.5 christos return FALSE;
4919 1.1.1.5 christos }
4920 1.1.1.5 christos }
4921 1.1.1.5 christos
4922 1.1.1.2 christos return TRUE;
4923 1.1.1.5 christos }
4924 1.1.1.5 christos
4925 1.1 christos static void
4926 1.1.1.5 christos ppc_elf_vle_split16 (bfd *input_bfd,
4927 1.1 christos asection *input_section,
4928 1.1.1.5 christos unsigned long offset,
4929 1.1.1.5 christos bfd_byte *loc,
4930 1.1.1.5 christos bfd_vma value,
4931 1.1.1.5 christos split16_format_type split16_format,
4932 1.1.1.5 christos bfd_boolean fixup)
4933 1.1.1.5 christos {
4934 1.1.1.5 christos unsigned int insn, opcode, top5;
4935 1.1.1.5 christos
4936 1.1.1.5 christos insn = bfd_get_32 (input_bfd, loc);
4937 1.1.1.5 christos opcode = insn & 0xfc00f800;
4938 1.1.1.5 christos if (opcode == E_OR2I_INSN
4939 1.1.1.5 christos || opcode == E_AND2I_DOT_INSN
4940 1.1.1.5 christos || opcode == E_OR2IS_INSN
4941 1.1.1.5 christos || opcode == E_LIS_INSN
4942 1.1.1.5 christos || opcode == E_AND2IS_DOT_INSN)
4943 1.1.1.5 christos {
4944 1.1.1.5 christos if (split16_format != split16a_type)
4945 1.1.1.5 christos {
4946 1.1.1.5 christos if (fixup)
4947 1.1.1.5 christos split16_format = split16a_type;
4948 1.1.1.5 christos else
4949 1.1.1.5 christos _bfd_error_handler
4950 1.1.1.5 christos /* xgettext:c-format */
4951 1.1.1.5 christos (_("%B(%A+0x%lx): expected 16A style relocation on 0x%08x insn"),
4952 1.1.1.5 christos input_bfd, input_section, offset, opcode);
4953 1.1.1.5 christos }
4954 1.1.1.5 christos }
4955 1.1.1.5 christos else if (opcode == E_ADD2I_DOT_INSN
4956 1.1.1.5 christos || opcode == E_ADD2IS_INSN
4957 1.1.1.5 christos || opcode == E_CMP16I_INSN
4958 1.1.1.5 christos || opcode == E_MULL2I_INSN
4959 1.1.1.5 christos || opcode == E_CMPL16I_INSN
4960 1.1.1.5 christos || opcode == E_CMPH16I_INSN
4961 1.1.1.5 christos || opcode == E_CMPHL16I_INSN)
4962 1.1.1.5 christos {
4963 1.1.1.5 christos if (split16_format != split16d_type)
4964 1.1.1.5 christos {
4965 1.1.1.5 christos if (fixup)
4966 1.1.1.2 christos split16_format = split16d_type;
4967 1.1.1.5 christos else
4968 1.1.1.5 christos _bfd_error_handler
4969 1.1 christos /* xgettext:c-format */
4970 1.1.1.2 christos (_("%B(%A+0x%lx): expected 16D style relocation on 0x%08x insn"),
4971 1.1.1.5 christos input_bfd, input_section, offset, opcode);
4972 1.1 christos }
4973 1.1 christos }
4974 1.1 christos top5 = value & 0xf800;
4975 1.1 christos top5 = top5 << (split16_format == split16a_type ? 5 : 10);
4976 1.1 christos insn &= (split16_format == split16a_type ? ~0x1f07ff : ~0x3e007ff);
4977 1.1 christos insn |= top5;
4978 1.1.1.2 christos insn |= value & 0x7ff;
4979 1.1 christos bfd_put_32 (input_bfd, insn, loc);
4980 1.1 christos }
4981 1.1 christos
4982 1.1 christos /* Choose which PLT scheme to use, and set .plt flags appropriately.
4984 1.1 christos Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4985 1.1 christos int
4986 1.1 christos ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4987 1.1 christos struct bfd_link_info *info)
4988 1.1 christos {
4989 1.1.1.2 christos struct ppc_elf_link_hash_table *htab;
4990 1.1 christos flagword flags;
4991 1.1.1.4 christos
4992 1.1 christos htab = ppc_elf_hash_table (info);
4993 1.1 christos
4994 1.1 christos if (htab->plt_type == PLT_UNSET)
4995 1.1 christos {
4996 1.1 christos struct elf_link_hash_entry *h;
4997 1.1 christos
4998 1.1 christos if (htab->params->plt_style == PLT_OLD)
4999 1.1 christos htab->plt_type = PLT_OLD;
5000 1.1 christos else if (bfd_link_pic (info)
5001 1.1 christos && htab->elf.dynamic_sections_created
5002 1.1 christos && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
5003 1.1 christos FALSE, FALSE, TRUE)) != NULL
5004 1.1 christos && (h->type == STT_FUNC
5005 1.1 christos || h->needs_plt)
5006 1.1 christos && h->ref_regular
5007 1.1 christos && !(SYMBOL_CALLS_LOCAL (info, h)
5008 1.1 christos || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5009 1.1 christos && h->root.type == bfd_link_hash_undefweak)))
5010 1.1 christos {
5011 1.1.1.2 christos /* Profiling of shared libs (and pies) is not supported with
5012 1.1 christos secure plt, because ppc32 does profiling before a
5013 1.1 christos function prologue and a secure plt pic call stubs needs
5014 1.1 christos r30 to be set up. */
5015 1.1 christos htab->plt_type = PLT_OLD;
5016 1.1 christos }
5017 1.1 christos else
5018 1.1 christos {
5019 1.1.1.2 christos bfd *ibfd;
5020 1.1 christos enum ppc_elf_plt_type plt_type = htab->params->plt_style;
5021 1.1 christos
5022 1.1 christos /* Look through the reloc flags left by ppc_elf_check_relocs.
5023 1.1 christos Use the old style bss plt if a file makes plt calls
5024 1.1 christos without using the new relocs, and if ld isn't given
5025 1.1 christos --secure-plt and we never see REL16 relocs. */
5026 1.1 christos if (plt_type == PLT_UNSET)
5027 1.1 christos plt_type = PLT_OLD;
5028 1.1 christos for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
5029 1.1 christos if (is_ppc_elf (ibfd))
5030 1.1 christos {
5031 1.1 christos if (ppc_elf_tdata (ibfd)->has_rel16)
5032 1.1 christos plt_type = PLT_NEW;
5033 1.1 christos else if (ppc_elf_tdata (ibfd)->makes_plt_call)
5034 1.1.1.2 christos {
5035 1.1 christos plt_type = PLT_OLD;
5036 1.1 christos htab->old_bfd = ibfd;
5037 1.1 christos break;
5038 1.1 christos }
5039 1.1 christos }
5040 1.1 christos htab->plt_type = plt_type;
5041 1.1 christos }
5042 1.1 christos }
5043 1.1 christos if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
5044 1.1 christos {
5045 1.1 christos if (htab->old_bfd != NULL)
5046 1.1 christos info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
5047 1.1 christos htab->old_bfd);
5048 1.1 christos else
5049 1.1 christos info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
5050 1.1 christos }
5051 1.1.1.5 christos
5052 1.1.1.5 christos BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
5053 1.1 christos
5054 1.1 christos if (htab->plt_type == PLT_NEW)
5055 1.1 christos {
5056 1.1.1.5 christos flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
5057 1.1.1.5 christos | SEC_IN_MEMORY | SEC_LINKER_CREATED);
5058 1.1 christos
5059 1.1 christos /* The new PLT is a loaded section. */
5060 1.1 christos if (htab->elf.splt != NULL
5061 1.1 christos && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.splt, flags))
5062 1.1 christos return -1;
5063 1.1 christos
5064 1.1 christos /* The new GOT is not executable. */
5065 1.1 christos if (htab->elf.sgot != NULL
5066 1.1 christos && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.sgot, flags))
5067 1.1 christos return -1;
5068 1.1 christos }
5069 1.1 christos else
5070 1.1 christos {
5071 1.1 christos /* Stop an unused .glink section from affecting .text alignment. */
5072 1.1 christos if (htab->glink != NULL
5073 1.1 christos && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
5074 1.1 christos return -1;
5075 1.1 christos }
5076 1.1 christos return htab->plt_type == PLT_NEW;
5077 1.1 christos }
5078 1.1 christos
5079 1.1 christos /* Return the section that should be marked against GC for a given
5081 1.1 christos relocation. */
5082 1.1 christos
5083 1.1 christos static asection *
5084 1.1 christos ppc_elf_gc_mark_hook (asection *sec,
5085 1.1 christos struct bfd_link_info *info,
5086 1.1 christos Elf_Internal_Rela *rel,
5087 1.1 christos struct elf_link_hash_entry *h,
5088 1.1 christos Elf_Internal_Sym *sym)
5089 1.1 christos {
5090 1.1 christos if (h != NULL)
5091 1.1 christos switch (ELF32_R_TYPE (rel->r_info))
5092 1.1 christos {
5093 1.1 christos case R_PPC_GNU_VTINHERIT:
5094 1.1 christos case R_PPC_GNU_VTENTRY:
5095 1.1 christos return NULL;
5096 1.1 christos }
5097 1.1 christos
5098 1.1 christos return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5099 1.1 christos }
5100 1.1 christos
5101 1.1 christos /* Update the got, plt and dynamic reloc reference counts for the
5102 1.1 christos section being removed. */
5103 1.1 christos
5104 1.1 christos static bfd_boolean
5105 1.1 christos ppc_elf_gc_sweep_hook (bfd *abfd,
5106 1.1 christos struct bfd_link_info *info,
5107 1.1.1.4 christos asection *sec,
5108 1.1 christos const Elf_Internal_Rela *relocs)
5109 1.1 christos {
5110 1.1 christos struct ppc_elf_link_hash_table *htab;
5111 1.1 christos Elf_Internal_Shdr *symtab_hdr;
5112 1.1 christos struct elf_link_hash_entry **sym_hashes;
5113 1.1 christos bfd_signed_vma *local_got_refcounts;
5114 1.1 christos const Elf_Internal_Rela *rel, *relend;
5115 1.1 christos asection *got2;
5116 1.1 christos
5117 1.1 christos if (bfd_link_relocatable (info))
5118 1.1 christos return TRUE;
5119 1.1 christos
5120 1.1 christos if ((sec->flags & SEC_ALLOC) == 0)
5121 1.1 christos return TRUE;
5122 1.1 christos
5123 1.1 christos elf_section_data (sec)->local_dynrel = NULL;
5124 1.1 christos
5125 1.1 christos htab = ppc_elf_hash_table (info);
5126 1.1 christos symtab_hdr = &elf_symtab_hdr (abfd);
5127 1.1 christos sym_hashes = elf_sym_hashes (abfd);
5128 1.1 christos local_got_refcounts = elf_local_got_refcounts (abfd);
5129 1.1 christos got2 = bfd_get_section_by_name (abfd, ".got2");
5130 1.1 christos
5131 1.1 christos relend = relocs + sec->reloc_count;
5132 1.1 christos for (rel = relocs; rel < relend; rel++)
5133 1.1 christos {
5134 1.1 christos unsigned long r_symndx;
5135 1.1 christos enum elf_ppc_reloc_type r_type;
5136 1.1 christos struct elf_link_hash_entry *h = NULL;
5137 1.1 christos
5138 1.1 christos r_symndx = ELF32_R_SYM (rel->r_info);
5139 1.1 christos if (r_symndx >= symtab_hdr->sh_info)
5140 1.1 christos {
5141 1.1 christos struct elf_dyn_relocs **pp, *p;
5142 1.1 christos struct ppc_elf_link_hash_entry *eh;
5143 1.1 christos
5144 1.1 christos h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5145 1.1 christos while (h->root.type == bfd_link_hash_indirect
5146 1.1 christos || h->root.type == bfd_link_hash_warning)
5147 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
5148 1.1 christos eh = (struct ppc_elf_link_hash_entry *) h;
5149 1.1 christos
5150 1.1 christos for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5151 1.1 christos if (p->sec == sec)
5152 1.1 christos {
5153 1.1.1.4 christos /* Everything must go for SEC. */
5154 1.1 christos *pp = p->next;
5155 1.1 christos break;
5156 1.1 christos }
5157 1.1 christos }
5158 1.1 christos
5159 1.1 christos r_type = ELF32_R_TYPE (rel->r_info);
5160 1.1 christos if (!htab->is_vxworks
5161 1.1 christos && h == NULL
5162 1.1 christos && local_got_refcounts != NULL
5163 1.1 christos && (!bfd_link_pic (info)
5164 1.1 christos || is_branch_reloc (r_type)))
5165 1.1 christos {
5166 1.1.1.4 christos struct plt_entry **local_plt = (struct plt_entry **)
5167 1.1 christos (local_got_refcounts + symtab_hdr->sh_info);
5168 1.1 christos char *local_got_tls_masks = (char *)
5169 1.1 christos (local_plt + symtab_hdr->sh_info);
5170 1.1 christos if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
5171 1.1 christos {
5172 1.1 christos struct plt_entry **ifunc = local_plt + r_symndx;
5173 1.1 christos bfd_vma addend = 0;
5174 1.1 christos struct plt_entry *ent;
5175 1.1 christos
5176 1.1 christos if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
5177 1.1 christos addend = rel->r_addend;
5178 1.1 christos ent = find_plt_ent (ifunc, got2, addend);
5179 1.1 christos if (ent->plt.refcount > 0)
5180 1.1 christos ent->plt.refcount -= 1;
5181 1.1 christos continue;
5182 1.1 christos }
5183 1.1 christos }
5184 1.1 christos
5185 1.1 christos switch (r_type)
5186 1.1 christos {
5187 1.1 christos case R_PPC_GOT_TLSLD16:
5188 1.1 christos case R_PPC_GOT_TLSLD16_LO:
5189 1.1 christos case R_PPC_GOT_TLSLD16_HI:
5190 1.1 christos case R_PPC_GOT_TLSLD16_HA:
5191 1.1 christos case R_PPC_GOT_TLSGD16:
5192 1.1 christos case R_PPC_GOT_TLSGD16_LO:
5193 1.1 christos case R_PPC_GOT_TLSGD16_HI:
5194 1.1 christos case R_PPC_GOT_TLSGD16_HA:
5195 1.1 christos case R_PPC_GOT_TPREL16:
5196 1.1 christos case R_PPC_GOT_TPREL16_LO:
5197 1.1 christos case R_PPC_GOT_TPREL16_HI:
5198 1.1 christos case R_PPC_GOT_TPREL16_HA:
5199 1.1 christos case R_PPC_GOT_DTPREL16:
5200 1.1 christos case R_PPC_GOT_DTPREL16_LO:
5201 1.1.1.4 christos case R_PPC_GOT_DTPREL16_HI:
5202 1.1 christos case R_PPC_GOT_DTPREL16_HA:
5203 1.1 christos case R_PPC_GOT16:
5204 1.1 christos case R_PPC_GOT16_LO:
5205 1.1 christos case R_PPC_GOT16_HI:
5206 1.1 christos case R_PPC_GOT16_HA:
5207 1.1 christos if (h != NULL)
5208 1.1 christos {
5209 1.1 christos if (h->got.refcount > 0)
5210 1.1 christos h->got.refcount--;
5211 1.1 christos if (!bfd_link_pic (info))
5212 1.1 christos {
5213 1.1 christos struct plt_entry *ent;
5214 1.1 christos
5215 1.1 christos ent = find_plt_ent (&h->plt.plist, NULL, 0);
5216 1.1 christos if (ent != NULL && ent->plt.refcount > 0)
5217 1.1 christos ent->plt.refcount -= 1;
5218 1.1 christos }
5219 1.1 christos }
5220 1.1 christos else if (local_got_refcounts != NULL)
5221 1.1 christos {
5222 1.1 christos if (local_got_refcounts[r_symndx] > 0)
5223 1.1 christos local_got_refcounts[r_symndx]--;
5224 1.1.1.5 christos }
5225 1.1 christos break;
5226 1.1 christos
5227 1.1 christos case R_PPC_REL24:
5228 1.1 christos case R_PPC_REL14:
5229 1.1 christos case R_PPC_REL14_BRTAKEN:
5230 1.1 christos case R_PPC_REL14_BRNTAKEN:
5231 1.1 christos case R_PPC_REL32:
5232 1.1 christos if (h == NULL || h == htab->elf.hgot)
5233 1.1 christos break;
5234 1.1 christos /* Fall through. */
5235 1.1 christos
5236 1.1 christos case R_PPC_ADDR32:
5237 1.1.1.4 christos case R_PPC_ADDR24:
5238 1.1 christos case R_PPC_ADDR16:
5239 1.1.1.5 christos case R_PPC_ADDR16_LO:
5240 1.1 christos case R_PPC_ADDR16_HI:
5241 1.1 christos case R_PPC_ADDR16_HA:
5242 1.1 christos case R_PPC_ADDR14:
5243 1.1 christos case R_PPC_ADDR14_BRTAKEN:
5244 1.1 christos case R_PPC_ADDR14_BRNTAKEN:
5245 1.1 christos case R_PPC_UADDR32:
5246 1.1 christos case R_PPC_UADDR16:
5247 1.1 christos if (bfd_link_pic (info))
5248 1.1 christos break;
5249 1.1 christos /* Fall through. */
5250 1.1 christos
5251 1.1 christos case R_PPC_PLT32:
5252 1.1.1.4 christos case R_PPC_PLTREL24:
5253 1.1 christos case R_PPC_PLTREL32:
5254 1.1 christos case R_PPC_PLT16_LO:
5255 1.1 christos case R_PPC_PLT16_HI:
5256 1.1 christos case R_PPC_PLT16_HA:
5257 1.1 christos if (h != NULL)
5258 1.1 christos {
5259 1.1 christos bfd_vma addend = 0;
5260 1.1 christos struct plt_entry *ent;
5261 1.1 christos
5262 1.1 christos if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
5263 1.1 christos addend = rel->r_addend;
5264 1.1 christos ent = find_plt_ent (&h->plt.plist, got2, addend);
5265 1.1 christos if (ent != NULL && ent->plt.refcount > 0)
5266 1.1 christos ent->plt.refcount -= 1;
5267 1.1 christos }
5268 1.1 christos break;
5269 1.1 christos
5270 1.1 christos default:
5271 1.1.1.2 christos break;
5272 1.1 christos }
5273 1.1 christos }
5274 1.1 christos return TRUE;
5275 1.1 christos }
5276 1.1 christos
5277 1.1 christos /* Set plt output section type, htab->tls_get_addr, and call the
5279 1.1.1.3 christos generic ELF tls_setup function. */
5280 1.1.1.3 christos
5281 1.1.1.2 christos asection *
5282 1.1 christos ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5283 1.1 christos {
5284 1.1 christos struct ppc_elf_link_hash_table *htab;
5285 1.1 christos
5286 1.1 christos htab = ppc_elf_hash_table (info);
5287 1.1 christos htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5288 1.1 christos FALSE, FALSE, TRUE);
5289 1.1 christos if (htab->plt_type != PLT_NEW)
5290 1.1 christos htab->params->no_tls_get_addr_opt = TRUE;
5291 1.1 christos
5292 1.1 christos if (!htab->params->no_tls_get_addr_opt)
5293 1.1 christos {
5294 1.1 christos struct elf_link_hash_entry *opt, *tga;
5295 1.1 christos opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5296 1.1 christos FALSE, FALSE, TRUE);
5297 1.1 christos if (opt != NULL
5298 1.1 christos && (opt->root.type == bfd_link_hash_defined
5299 1.1 christos || opt->root.type == bfd_link_hash_defweak))
5300 1.1 christos {
5301 1.1 christos /* If glibc supports an optimized __tls_get_addr call stub,
5302 1.1 christos signalled by the presence of __tls_get_addr_opt, and we'll
5303 1.1 christos be calling __tls_get_addr via a plt call stub, then
5304 1.1 christos make __tls_get_addr point to __tls_get_addr_opt. */
5305 1.1 christos tga = htab->tls_get_addr;
5306 1.1 christos if (htab->elf.dynamic_sections_created
5307 1.1 christos && tga != NULL
5308 1.1 christos && (tga->type == STT_FUNC
5309 1.1 christos || tga->needs_plt)
5310 1.1 christos && !(SYMBOL_CALLS_LOCAL (info, tga)
5311 1.1 christos || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
5312 1.1.1.5 christos && tga->root.type == bfd_link_hash_undefweak)))
5313 1.1 christos {
5314 1.1 christos struct plt_entry *ent;
5315 1.1 christos for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5316 1.1 christos if (ent->plt.refcount > 0)
5317 1.1 christos break;
5318 1.1 christos if (ent != NULL)
5319 1.1 christos {
5320 1.1 christos tga->root.type = bfd_link_hash_indirect;
5321 1.1 christos tga->root.u.i.link = &opt->root;
5322 1.1 christos ppc_elf_copy_indirect_symbol (info, opt, tga);
5323 1.1 christos opt->mark = 1;
5324 1.1 christos if (opt->dynindx != -1)
5325 1.1 christos {
5326 1.1 christos /* Use __tls_get_addr_opt in dynamic relocations. */
5327 1.1.1.2 christos opt->dynindx = -1;
5328 1.1 christos _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5329 1.1 christos opt->dynstr_index);
5330 1.1.1.5 christos if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5331 1.1.1.5 christos return FALSE;
5332 1.1 christos }
5333 1.1.1.5 christos htab->tls_get_addr = opt;
5334 1.1.1.5 christos }
5335 1.1 christos }
5336 1.1 christos }
5337 1.1 christos else
5338 1.1 christos htab->params->no_tls_get_addr_opt = TRUE;
5339 1.1 christos }
5340 1.1 christos if (htab->plt_type == PLT_NEW
5341 1.1 christos && htab->elf.splt != NULL
5342 1.1 christos && htab->elf.splt->output_section != NULL)
5343 1.1 christos {
5344 1.1 christos elf_section_type (htab->elf.splt->output_section) = SHT_PROGBITS;
5345 1.1 christos elf_section_flags (htab->elf.splt->output_section) = SHF_ALLOC + SHF_WRITE;
5346 1.1 christos }
5347 1.1 christos
5348 1.1 christos return _bfd_elf_tls_setup (obfd, info);
5349 1.1 christos }
5350 1.1 christos
5351 1.1 christos /* Return TRUE iff REL is a branch reloc with a global symbol matching
5352 1.1 christos HASH. */
5353 1.1 christos
5354 1.1 christos static bfd_boolean
5355 1.1 christos branch_reloc_hash_match (const bfd *ibfd,
5356 1.1 christos const Elf_Internal_Rela *rel,
5357 1.1 christos const struct elf_link_hash_entry *hash)
5358 1.1 christos {
5359 1.1 christos Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5360 1.1 christos enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5361 1.1 christos unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5362 1.1 christos
5363 1.1 christos if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5364 1.1 christos {
5365 1.1 christos struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5366 1.1 christos struct elf_link_hash_entry *h;
5367 1.1 christos
5368 1.1 christos h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5369 1.1 christos while (h->root.type == bfd_link_hash_indirect
5370 1.1 christos || h->root.type == bfd_link_hash_warning)
5371 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
5372 1.1 christos if (h == hash)
5373 1.1 christos return TRUE;
5374 1.1 christos }
5375 1.1 christos return FALSE;
5376 1.1 christos }
5377 1.1 christos
5378 1.1 christos /* Run through all the TLS relocs looking for optimization
5379 1.1.1.4 christos opportunities. */
5380 1.1 christos
5381 1.1 christos bfd_boolean
5382 1.1 christos ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5383 1.1 christos struct bfd_link_info *info)
5384 1.1 christos {
5385 1.1 christos bfd *ibfd;
5386 1.1 christos asection *sec;
5387 1.1 christos struct ppc_elf_link_hash_table *htab;
5388 1.1 christos int pass;
5389 1.1 christos
5390 1.1 christos if (!bfd_link_executable (info))
5391 1.1 christos return TRUE;
5392 1.1 christos
5393 1.1.1.2 christos htab = ppc_elf_hash_table (info);
5394 1.1 christos if (htab == NULL)
5395 1.1 christos return FALSE;
5396 1.1 christos
5397 1.1 christos /* Make two passes through the relocs. First time check that tls
5398 1.1 christos relocs involved in setting up a tls_get_addr call are indeed
5399 1.1 christos followed by such a call. If they are not, don't do any tls
5400 1.1 christos optimization. On the second pass twiddle tls_mask flags to
5401 1.1 christos notify relocate_section that optimization can be done, and
5402 1.1 christos adjust got and plt refcounts. */
5403 1.1 christos for (pass = 0; pass < 2; ++pass)
5404 1.1 christos for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5405 1.1 christos {
5406 1.1 christos Elf_Internal_Sym *locsyms = NULL;
5407 1.1 christos Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5408 1.1 christos asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5409 1.1 christos
5410 1.1 christos for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5411 1.1 christos if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5412 1.1 christos {
5413 1.1 christos Elf_Internal_Rela *relstart, *rel, *relend;
5414 1.1 christos int expecting_tls_get_addr = 0;
5415 1.1 christos
5416 1.1 christos /* Read the relocations. */
5417 1.1 christos relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5418 1.1 christos info->keep_memory);
5419 1.1 christos if (relstart == NULL)
5420 1.1 christos return FALSE;
5421 1.1 christos
5422 1.1 christos relend = relstart + sec->reloc_count;
5423 1.1 christos for (rel = relstart; rel < relend; rel++)
5424 1.1 christos {
5425 1.1 christos enum elf_ppc_reloc_type r_type;
5426 1.1 christos unsigned long r_symndx;
5427 1.1 christos struct elf_link_hash_entry *h = NULL;
5428 1.1 christos char *tls_mask;
5429 1.1 christos char tls_set, tls_clear;
5430 1.1 christos bfd_boolean is_local;
5431 1.1 christos bfd_signed_vma *got_count;
5432 1.1 christos
5433 1.1 christos r_symndx = ELF32_R_SYM (rel->r_info);
5434 1.1 christos if (r_symndx >= symtab_hdr->sh_info)
5435 1.1 christos {
5436 1.1 christos struct elf_link_hash_entry **sym_hashes;
5437 1.1 christos
5438 1.1 christos sym_hashes = elf_sym_hashes (ibfd);
5439 1.1 christos h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5440 1.1 christos while (h->root.type == bfd_link_hash_indirect
5441 1.1 christos || h->root.type == bfd_link_hash_warning)
5442 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
5443 1.1 christos }
5444 1.1 christos
5445 1.1 christos is_local = FALSE;
5446 1.1 christos if (h == NULL
5447 1.1 christos || !h->def_dynamic)
5448 1.1 christos is_local = TRUE;
5449 1.1 christos
5450 1.1 christos r_type = ELF32_R_TYPE (rel->r_info);
5451 1.1 christos /* If this section has old-style __tls_get_addr calls
5452 1.1 christos without marker relocs, then check that each
5453 1.1 christos __tls_get_addr call reloc is preceded by a reloc
5454 1.1 christos that conceivably belongs to the __tls_get_addr arg
5455 1.1 christos setup insn. If we don't find matching arg setup
5456 1.1 christos relocs, don't do any tls optimization. */
5457 1.1 christos if (pass == 0
5458 1.1 christos && sec->has_tls_get_addr_call
5459 1.1 christos && h != NULL
5460 1.1 christos && h == htab->tls_get_addr
5461 1.1 christos && !expecting_tls_get_addr
5462 1.1 christos && is_branch_reloc (r_type))
5463 1.1 christos {
5464 1.1 christos info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5465 1.1 christos "TLS optimization disabled\n",
5466 1.1 christos ibfd, sec, rel->r_offset);
5467 1.1.1.5 christos if (elf_section_data (sec)->relocs != relstart)
5468 1.1 christos free (relstart);
5469 1.1 christos return TRUE;
5470 1.1 christos }
5471 1.1 christos
5472 1.1 christos expecting_tls_get_addr = 0;
5473 1.1 christos switch (r_type)
5474 1.1 christos {
5475 1.1 christos case R_PPC_GOT_TLSLD16:
5476 1.1 christos case R_PPC_GOT_TLSLD16_LO:
5477 1.1 christos expecting_tls_get_addr = 1;
5478 1.1 christos /* Fall through. */
5479 1.1 christos
5480 1.1 christos case R_PPC_GOT_TLSLD16_HI:
5481 1.1 christos case R_PPC_GOT_TLSLD16_HA:
5482 1.1 christos /* These relocs should never be against a symbol
5483 1.1 christos defined in a shared lib. Leave them alone if
5484 1.1 christos that turns out to be the case. */
5485 1.1.1.5 christos if (!is_local)
5486 1.1 christos continue;
5487 1.1 christos
5488 1.1 christos /* LD -> LE */
5489 1.1 christos tls_set = 0;
5490 1.1 christos tls_clear = TLS_LD;
5491 1.1 christos break;
5492 1.1 christos
5493 1.1 christos case R_PPC_GOT_TLSGD16:
5494 1.1 christos case R_PPC_GOT_TLSGD16_LO:
5495 1.1 christos expecting_tls_get_addr = 1;
5496 1.1 christos /* Fall through. */
5497 1.1 christos
5498 1.1 christos case R_PPC_GOT_TLSGD16_HI:
5499 1.1 christos case R_PPC_GOT_TLSGD16_HA:
5500 1.1 christos if (is_local)
5501 1.1 christos /* GD -> LE */
5502 1.1 christos tls_set = 0;
5503 1.1 christos else
5504 1.1 christos /* GD -> IE */
5505 1.1 christos tls_set = TLS_TLS | TLS_TPRELGD;
5506 1.1 christos tls_clear = TLS_GD;
5507 1.1 christos break;
5508 1.1 christos
5509 1.1 christos case R_PPC_GOT_TPREL16:
5510 1.1 christos case R_PPC_GOT_TPREL16_LO:
5511 1.1 christos case R_PPC_GOT_TPREL16_HI:
5512 1.1 christos case R_PPC_GOT_TPREL16_HA:
5513 1.1 christos if (is_local)
5514 1.1 christos {
5515 1.1 christos /* IE -> LE */
5516 1.1 christos tls_set = 0;
5517 1.1 christos tls_clear = TLS_TPREL;
5518 1.1 christos break;
5519 1.1 christos }
5520 1.1 christos else
5521 1.1 christos continue;
5522 1.1 christos
5523 1.1 christos case R_PPC_TLSGD:
5524 1.1 christos case R_PPC_TLSLD:
5525 1.1 christos expecting_tls_get_addr = 2;
5526 1.1 christos tls_set = 0;
5527 1.1 christos tls_clear = 0;
5528 1.1 christos break;
5529 1.1 christos
5530 1.1 christos default:
5531 1.1 christos continue;
5532 1.1 christos }
5533 1.1 christos
5534 1.1 christos if (pass == 0)
5535 1.1 christos {
5536 1.1 christos if (!expecting_tls_get_addr
5537 1.1 christos || (expecting_tls_get_addr == 1
5538 1.1 christos && !sec->has_tls_get_addr_call))
5539 1.1 christos continue;
5540 1.1 christos
5541 1.1 christos if (rel + 1 < relend
5542 1.1 christos && branch_reloc_hash_match (ibfd, rel + 1,
5543 1.1 christos htab->tls_get_addr))
5544 1.1 christos continue;
5545 1.1 christos
5546 1.1 christos /* Uh oh, we didn't find the expected call. We
5547 1.1 christos could just mark this symbol to exclude it
5548 1.1 christos from tls optimization but it's safer to skip
5549 1.1 christos the entire optimization. */
5550 1.1 christos info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5551 1.1 christos "TLS optimization disabled\n"),
5552 1.1.1.4 christos ibfd, sec, rel->r_offset);
5553 1.1 christos if (elf_section_data (sec)->relocs != relstart)
5554 1.1 christos free (relstart);
5555 1.1 christos return TRUE;
5556 1.1 christos }
5557 1.1 christos
5558 1.1 christos if (expecting_tls_get_addr)
5559 1.1 christos {
5560 1.1 christos struct plt_entry *ent;
5561 1.1 christos bfd_vma addend = 0;
5562 1.1 christos
5563 1.1 christos if (bfd_link_pic (info)
5564 1.1 christos && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5565 1.1 christos addend = rel[1].r_addend;
5566 1.1 christos ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5567 1.1 christos got2, addend);
5568 1.1 christos if (ent != NULL && ent->plt.refcount > 0)
5569 1.1 christos ent->plt.refcount -= 1;
5570 1.1 christos
5571 1.1 christos if (expecting_tls_get_addr == 2)
5572 1.1 christos continue;
5573 1.1 christos }
5574 1.1 christos
5575 1.1 christos if (h != NULL)
5576 1.1 christos {
5577 1.1 christos tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5578 1.1 christos got_count = &h->got.refcount;
5579 1.1 christos }
5580 1.1 christos else
5581 1.1 christos {
5582 1.1 christos bfd_signed_vma *lgot_refs;
5583 1.1 christos struct plt_entry **local_plt;
5584 1.1 christos char *lgot_masks;
5585 1.1 christos
5586 1.1 christos if (locsyms == NULL)
5587 1.1 christos {
5588 1.1 christos locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5589 1.1 christos if (locsyms == NULL)
5590 1.1 christos locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5591 1.1 christos symtab_hdr->sh_info,
5592 1.1 christos 0, NULL, NULL, NULL);
5593 1.1 christos if (locsyms == NULL)
5594 1.1 christos {
5595 1.1 christos if (elf_section_data (sec)->relocs != relstart)
5596 1.1 christos free (relstart);
5597 1.1 christos return FALSE;
5598 1.1 christos }
5599 1.1 christos }
5600 1.1 christos lgot_refs = elf_local_got_refcounts (ibfd);
5601 1.1 christos if (lgot_refs == NULL)
5602 1.1 christos abort ();
5603 1.1 christos local_plt = (struct plt_entry **)
5604 1.1 christos (lgot_refs + symtab_hdr->sh_info);
5605 1.1 christos lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5606 1.1 christos tls_mask = &lgot_masks[r_symndx];
5607 1.1 christos got_count = &lgot_refs[r_symndx];
5608 1.1 christos }
5609 1.1 christos
5610 1.1 christos if (tls_set == 0)
5611 1.1 christos {
5612 1.1 christos /* We managed to get rid of a got entry. */
5613 1.1 christos if (*got_count > 0)
5614 1.1 christos *got_count -= 1;
5615 1.1 christos }
5616 1.1 christos
5617 1.1 christos *tls_mask |= tls_set;
5618 1.1 christos *tls_mask &= ~tls_clear;
5619 1.1 christos }
5620 1.1 christos
5621 1.1 christos if (elf_section_data (sec)->relocs != relstart)
5622 1.1 christos free (relstart);
5623 1.1 christos }
5624 1.1 christos
5625 1.1 christos if (locsyms != NULL
5626 1.1 christos && (symtab_hdr->contents != (unsigned char *) locsyms))
5627 1.1 christos {
5628 1.1 christos if (!info->keep_memory)
5629 1.1 christos free (locsyms);
5630 1.1 christos else
5631 1.1 christos symtab_hdr->contents = (unsigned char *) locsyms;
5632 1.1 christos }
5633 1.1 christos }
5634 1.1 christos return TRUE;
5635 1.1 christos }
5636 1.1 christos
5637 1.1 christos /* Return true if we have dynamic relocs that apply to read-only sections. */
5639 1.1 christos
5640 1.1 christos static bfd_boolean
5641 1.1 christos readonly_dynrelocs (struct elf_link_hash_entry *h)
5642 1.1 christos {
5643 1.1 christos struct elf_dyn_relocs *p;
5644 1.1 christos
5645 1.1 christos for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5646 1.1 christos {
5647 1.1 christos asection *s = p->sec->output_section;
5648 1.1 christos
5649 1.1 christos if (s != NULL
5650 1.1 christos && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5651 1.1 christos == (SEC_READONLY | SEC_ALLOC)))
5652 1.1 christos return TRUE;
5653 1.1 christos }
5654 1.1 christos return FALSE;
5655 1.1 christos }
5656 1.1 christos
5657 1.1 christos /* Adjust a symbol defined by a dynamic object and referenced by a
5658 1.1 christos regular object. The current definition is in some section of the
5659 1.1 christos dynamic object, but we're not including those sections. We have to
5660 1.1 christos change the definition to something the rest of the link can
5661 1.1 christos understand. */
5662 1.1 christos
5663 1.1 christos static bfd_boolean
5664 1.1 christos ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5665 1.1 christos struct elf_link_hash_entry *h)
5666 1.1 christos {
5667 1.1 christos struct ppc_elf_link_hash_table *htab;
5668 1.1 christos asection *s;
5669 1.1 christos
5670 1.1 christos #ifdef DEBUG
5671 1.1 christos fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5672 1.1 christos h->root.root.string);
5673 1.1 christos #endif
5674 1.1 christos
5675 1.1 christos /* Make sure we know what is going on here. */
5676 1.1 christos htab = ppc_elf_hash_table (info);
5677 1.1 christos BFD_ASSERT (htab->elf.dynobj != NULL
5678 1.1 christos && (h->needs_plt
5679 1.1 christos || h->type == STT_GNU_IFUNC
5680 1.1 christos || h->u.weakdef != NULL
5681 1.1 christos || (h->def_dynamic
5682 1.1 christos && h->ref_regular
5683 1.1 christos && !h->def_regular)));
5684 1.1 christos
5685 1.1 christos /* Deal with function syms. */
5686 1.1 christos if (h->type == STT_FUNC
5687 1.1 christos || h->type == STT_GNU_IFUNC
5688 1.1 christos || h->needs_plt)
5689 1.1 christos {
5690 1.1 christos /* Clear procedure linkage table information for any symbol that
5691 1.1 christos won't need a .plt entry. */
5692 1.1 christos struct plt_entry *ent;
5693 1.1 christos for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5694 1.1 christos if (ent->plt.refcount > 0)
5695 1.1 christos break;
5696 1.1 christos if (ent == NULL
5697 1.1 christos || (h->type != STT_GNU_IFUNC
5698 1.1 christos && (SYMBOL_CALLS_LOCAL (info, h)
5699 1.1 christos || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5700 1.1 christos && h->root.type == bfd_link_hash_undefweak))))
5701 1.1 christos {
5702 1.1.1.2 christos /* A PLT entry is not required/allowed when:
5703 1.1 christos
5704 1.1 christos 1. We are not using ld.so; because then the PLT entry
5705 1.1 christos can't be set up, so we can't use one. In this case,
5706 1.1.1.2 christos ppc_elf_adjust_dynamic_symbol won't even be called.
5707 1.1.1.2 christos
5708 1.1.1.2 christos 2. GC has rendered the entry unused.
5709 1.1.1.5 christos
5710 1.1.1.5 christos 3. We know for certain that a call to this symbol
5711 1.1.1.5 christos will go to this object, or will remain undefined. */
5712 1.1.1.5 christos h->plt.plist = NULL;
5713 1.1.1.5 christos h->needs_plt = 0;
5714 1.1.1.5 christos h->pointer_equality_needed = 0;
5715 1.1.1.5 christos }
5716 1.1.1.5 christos else
5717 1.1.1.2 christos {
5718 1.1.1.2 christos /* Taking a function's address in a read/write section
5719 1.1.1.2 christos doesn't require us to define the function symbol in the
5720 1.1.1.2 christos executable on a plt call stub. A dynamic reloc can
5721 1.1.1.2 christos be used instead, giving better runtime performance.
5722 1.1.1.5 christos (Calls via that function pointer don't need to bounce
5723 1.1.1.5 christos through the plt call stub.) Similarly, use a dynamic
5724 1.1.1.5 christos reloc for a weak reference when possible, allowing the
5725 1.1.1.2 christos resolution of the symbol to be set at load time rather
5726 1.1.1.2 christos than link time. */
5727 1.1 christos if ((h->pointer_equality_needed
5728 1.1.1.3 christos || (!h->ref_regular_nonweak && h->non_got_ref))
5729 1.1 christos && !htab->is_vxworks
5730 1.1 christos && !ppc_elf_hash_entry (h)->has_sda_refs
5731 1.1 christos && !readonly_dynrelocs (h))
5732 1.1 christos {
5733 1.1 christos h->pointer_equality_needed = 0;
5734 1.1 christos /* After adjust_dynamic_symbol, non_got_ref set in the
5735 1.1 christos non-pic case means that dyn_relocs for this symbol
5736 1.1 christos should be discarded. */
5737 1.1 christos h->non_got_ref = 0;
5738 1.1 christos }
5739 1.1 christos }
5740 1.1 christos h->protected_def = 0;
5741 1.1 christos return TRUE;
5742 1.1 christos }
5743 1.1 christos else
5744 1.1 christos h->plt.plist = NULL;
5745 1.1 christos
5746 1.1 christos /* If this is a weak symbol, and there is a real definition, the
5747 1.1 christos processor independent code will have arranged for us to see the
5748 1.1 christos real definition first, and we can just use the same value. */
5749 1.1 christos if (h->u.weakdef != NULL)
5750 1.1 christos {
5751 1.1 christos BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5752 1.1 christos || h->u.weakdef->root.type == bfd_link_hash_defweak);
5753 1.1 christos h->root.u.def.section = h->u.weakdef->root.u.def.section;
5754 1.1 christos h->root.u.def.value = h->u.weakdef->root.u.def.value;
5755 1.1.1.4 christos if (ELIMINATE_COPY_RELOCS)
5756 1.1.1.3 christos h->non_got_ref = h->u.weakdef->non_got_ref;
5757 1.1.1.3 christos return TRUE;
5758 1.1.1.3 christos }
5759 1.1.1.3 christos
5760 1.1 christos /* This is a reference to a symbol defined by a dynamic object which
5761 1.1 christos is not a function. */
5762 1.1 christos
5763 1.1 christos /* If we are creating a shared library, we must presume that the
5764 1.1.1.3 christos only references to the symbol are via the global offset table.
5765 1.1.1.3 christos For such cases we need not do anything here; the relocations will
5766 1.1.1.3 christos be handled correctly by relocate_section. */
5767 1.1.1.3 christos if (bfd_link_pic (info))
5768 1.1.1.3 christos {
5769 1.1.1.3 christos h->protected_def = 0;
5770 1.1.1.3 christos return TRUE;
5771 1.1.1.3 christos }
5772 1.1.1.3 christos
5773 1.1.1.3 christos /* If there are no references to this symbol that do not use the
5774 1.1.1.3 christos GOT, we don't need to generate a copy reloc. */
5775 1.1.1.3 christos if (!h->non_got_ref)
5776 1.1.1.3 christos {
5777 1.1.1.3 christos h->protected_def = 0;
5778 1.1.1.3 christos return TRUE;
5779 1.1.1.3 christos }
5780 1.1.1.3 christos
5781 1.1.1.3 christos /* Protected variables do not work with .dynbss. The copy in
5782 1.1.1.3 christos .dynbss won't be used by the shared library with the protected
5783 1.1.1.3 christos definition for the variable. Editing to PIC, or text relocations
5784 1.1.1.3 christos are preferable to an incorrect program. */
5785 1.1.1.3 christos if (h->protected_def)
5786 1.1.1.3 christos {
5787 1.1.1.3 christos if (ELIMINATE_COPY_RELOCS
5788 1.1.1.3 christos && ppc_elf_hash_entry (h)->has_addr16_ha
5789 1.1.1.3 christos && ppc_elf_hash_entry (h)->has_addr16_lo
5790 1.1.1.3 christos && htab->params->pic_fixup == 0
5791 1.1 christos && info->disable_target_specific_optimizations <= 1)
5792 1.1 christos htab->params->pic_fixup = 1;
5793 1.1 christos h->non_got_ref = 0;
5794 1.1 christos return TRUE;
5795 1.1 christos }
5796 1.1 christos
5797 1.1 christos /* If -z nocopyreloc was given, we won't generate them either. */
5798 1.1 christos if (info->nocopyreloc)
5799 1.1 christos {
5800 1.1 christos h->non_got_ref = 0;
5801 1.1 christos return TRUE;
5802 1.1 christos }
5803 1.1 christos
5804 1.1 christos /* If we didn't find any dynamic relocs in read-only sections, then
5805 1.1 christos we'll be keeping the dynamic relocs and avoiding the copy reloc.
5806 1.1 christos We can't do this if there are any small data relocations. This
5807 1.1 christos doesn't work on VxWorks, where we can not have dynamic
5808 1.1 christos relocations (other than copy and jump slot relocations) in an
5809 1.1 christos executable. */
5810 1.1 christos if (ELIMINATE_COPY_RELOCS
5811 1.1 christos && !ppc_elf_hash_entry (h)->has_sda_refs
5812 1.1 christos && !htab->is_vxworks
5813 1.1 christos && !h->def_regular
5814 1.1 christos && !readonly_dynrelocs (h))
5815 1.1 christos {
5816 1.1 christos h->non_got_ref = 0;
5817 1.1 christos return TRUE;
5818 1.1 christos }
5819 1.1 christos
5820 1.1 christos /* We must allocate the symbol in our .dynbss section, which will
5821 1.1 christos become part of the .bss section of the executable. There will be
5822 1.1 christos an entry for this symbol in the .dynsym section. The dynamic
5823 1.1.1.5 christos object will contain position independent code, so all references
5824 1.1.1.5 christos from the dynamic object to this symbol will go through the global
5825 1.1 christos offset table. The dynamic linker will use the .dynsym entry to
5826 1.1.1.5 christos determine the address it must put in the global offset table, so
5827 1.1 christos both the dynamic object and the regular object will refer to the
5828 1.1 christos same memory location for the variable.
5829 1.1 christos
5830 1.1 christos Of course, if the symbol is referenced using SDAREL relocs, we
5831 1.1 christos must instead allocate it in .sbss. */
5832 1.1 christos
5833 1.1 christos if (ppc_elf_hash_entry (h)->has_sda_refs)
5834 1.1 christos s = htab->dynsbss;
5835 1.1 christos else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5836 1.1 christos s = htab->elf.sdynrelro;
5837 1.1 christos else
5838 1.1 christos s = htab->elf.sdynbss;
5839 1.1.1.5 christos BFD_ASSERT (s != NULL);
5840 1.1.1.5 christos
5841 1.1 christos /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5842 1.1.1.5 christos copy the initial value out of the dynamic object and into the
5843 1.1 christos runtime process image. We need to remember the offset into the
5844 1.1 christos .rela.bss section we are going to use. */
5845 1.1 christos if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5846 1.1 christos {
5847 1.1 christos asection *srel;
5848 1.1.1.2 christos
5849 1.1 christos if (ppc_elf_hash_entry (h)->has_sda_refs)
5850 1.1 christos srel = htab->relsbss;
5851 1.1 christos else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5852 1.1 christos srel = htab->elf.sreldynrelro;
5853 1.1 christos else
5854 1.1 christos srel = htab->elf.srelbss;
5855 1.1 christos BFD_ASSERT (srel != NULL);
5856 1.1 christos srel->size += sizeof (Elf32_External_Rela);
5857 1.1 christos h->needs_copy = 1;
5858 1.1 christos }
5859 1.1 christos
5860 1.1 christos return _bfd_elf_adjust_dynamic_copy (info, h, s);
5861 1.1 christos }
5862 1.1 christos
5863 1.1 christos /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5865 1.1 christos xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5866 1.1 christos specifying the addend on the plt relocation. For -fpic code, the sym
5867 1.1 christos is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5868 1.1.1.4 christos xxxxxxxx.got2.plt_pic32.<callee>. */
5869 1.1 christos
5870 1.1 christos static bfd_boolean
5871 1.1 christos add_stub_sym (struct plt_entry *ent,
5872 1.1 christos struct elf_link_hash_entry *h,
5873 1.1 christos struct bfd_link_info *info)
5874 1.1 christos {
5875 1.1 christos struct elf_link_hash_entry *sh;
5876 1.1 christos size_t len1, len2, len3;
5877 1.1 christos char *name;
5878 1.1 christos const char *stub;
5879 1.1 christos struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5880 1.1 christos
5881 1.1 christos if (bfd_link_pic (info))
5882 1.1 christos stub = ".plt_pic32.";
5883 1.1 christos else
5884 1.1 christos stub = ".plt_call32.";
5885 1.1 christos
5886 1.1 christos len1 = strlen (h->root.root.string);
5887 1.1 christos len2 = strlen (stub);
5888 1.1 christos len3 = 0;
5889 1.1 christos if (ent->sec)
5890 1.1 christos len3 = strlen (ent->sec->name);
5891 1.1 christos name = bfd_malloc (len1 + len2 + len3 + 9);
5892 1.1 christos if (name == NULL)
5893 1.1 christos return FALSE;
5894 1.1 christos sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5895 1.1 christos if (ent->sec)
5896 1.1 christos memcpy (name + 8, ent->sec->name, len3);
5897 1.1 christos memcpy (name + 8 + len3, stub, len2);
5898 1.1 christos memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5899 1.1.1.3 christos sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5900 1.1 christos if (sh == NULL)
5901 1.1 christos return FALSE;
5902 1.1 christos if (sh->root.type == bfd_link_hash_new)
5903 1.1 christos {
5904 1.1 christos sh->root.type = bfd_link_hash_defined;
5905 1.1 christos sh->root.u.def.section = htab->glink;
5906 1.1 christos sh->root.u.def.value = ent->glink_offset;
5907 1.1 christos sh->ref_regular = 1;
5908 1.1 christos sh->def_regular = 1;
5909 1.1 christos sh->ref_regular_nonweak = 1;
5910 1.1 christos sh->forced_local = 1;
5911 1.1 christos sh->non_elf = 0;
5912 1.1 christos sh->root.linker_def = 1;
5913 1.1 christos }
5914 1.1 christos return TRUE;
5915 1.1.1.5 christos }
5916 1.1.1.5 christos
5917 1.1 christos /* Allocate NEED contiguous space in .got, and return the offset.
5918 1.1 christos Handles allocation of the got header when crossing 32k. */
5919 1.1 christos
5920 1.1 christos static bfd_vma
5921 1.1 christos allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5922 1.1 christos {
5923 1.1 christos bfd_vma where;
5924 1.1 christos unsigned int max_before_header;
5925 1.1 christos
5926 1.1 christos if (htab->plt_type == PLT_VXWORKS)
5927 1.1 christos {
5928 1.1.1.5 christos where = htab->elf.sgot->size;
5929 1.1.1.5 christos htab->elf.sgot->size += need;
5930 1.1 christos }
5931 1.1.1.5 christos else
5932 1.1.1.5 christos {
5933 1.1 christos max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5934 1.1.1.5 christos if (need <= htab->got_gap)
5935 1.1.1.5 christos {
5936 1.1 christos where = max_before_header - htab->got_gap;
5937 1.1 christos htab->got_gap -= need;
5938 1.1 christos }
5939 1.1 christos else
5940 1.1 christos {
5941 1.1.1.5 christos if (htab->elf.sgot->size + need > max_before_header
5942 1.1.1.5 christos && htab->elf.sgot->size <= max_before_header)
5943 1.1.1.5 christos {
5944 1.1.1.5 christos htab->got_gap = max_before_header - htab->elf.sgot->size;
5945 1.1.1.5 christos htab->elf.sgot->size = max_before_header + htab->got_header_size;
5946 1.1.1.5 christos }
5947 1.1.1.5 christos where = htab->elf.sgot->size;
5948 1.1.1.5 christos htab->elf.sgot->size += need;
5949 1.1.1.5 christos }
5950 1.1.1.5 christos }
5951 1.1.1.5 christos return where;
5952 1.1.1.5 christos }
5953 1.1.1.5 christos
5954 1.1.1.5 christos /* If H is undefined weak, make it dynamic if that makes sense. */
5955 1.1.1.5 christos
5956 1.1.1.5 christos static bfd_boolean
5957 1.1.1.5 christos ensure_undefweak_dynamic (struct bfd_link_info *info,
5958 1.1 christos struct elf_link_hash_entry *h)
5959 1.1 christos {
5960 1.1 christos struct elf_link_hash_table *htab = elf_hash_table (info);
5961 1.1 christos
5962 1.1 christos if (htab->dynamic_sections_created
5963 1.1 christos && h->root.type == bfd_link_hash_undefweak
5964 1.1 christos && h->dynindx == -1
5965 1.1 christos && !h->forced_local
5966 1.1 christos && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
5967 1.1.1.5 christos return bfd_elf_link_record_dynamic_symbol (info, h);
5968 1.1 christos return TRUE;
5969 1.1 christos }
5970 1.1 christos
5971 1.1 christos /* Allocate space in associated reloc sections for dynamic relocs. */
5972 1.1 christos
5973 1.1 christos static bfd_boolean
5974 1.1.1.3 christos allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5975 1.1.1.3 christos {
5976 1.1.1.3 christos struct bfd_link_info *info = inf;
5977 1.1.1.3 christos struct ppc_elf_link_hash_entry *eh;
5978 1.1.1.3 christos struct ppc_elf_link_hash_table *htab;
5979 1.1.1.3 christos struct elf_dyn_relocs *p;
5980 1.1.1.3 christos bfd_boolean dyn;
5981 1.1 christos
5982 1.1 christos if (h->root.type == bfd_link_hash_indirect)
5983 1.1 christos return TRUE;
5984 1.1.1.5 christos
5985 1.1.1.5 christos htab = ppc_elf_hash_table (info);
5986 1.1.1.5 christos eh = (struct ppc_elf_link_hash_entry *) h;
5987 1.1.1.5 christos if (eh->elf.got.refcount > 0
5988 1.1 christos || (ELIMINATE_COPY_RELOCS
5989 1.1 christos && !eh->elf.def_regular
5990 1.1 christos && eh->elf.protected_def
5991 1.1 christos && eh->has_addr16_ha
5992 1.1 christos && eh->has_addr16_lo
5993 1.1 christos && htab->params->pic_fixup > 0))
5994 1.1 christos {
5995 1.1 christos unsigned int need;
5996 1.1 christos
5997 1.1 christos /* Make sure this symbol is output as a dynamic symbol.
5998 1.1 christos Undefined weak syms won't yet be marked as dynamic. */
5999 1.1 christos if (!ensure_undefweak_dynamic (info, &eh->elf))
6000 1.1 christos return FALSE;
6001 1.1 christos
6002 1.1 christos need = 0;
6003 1.1 christos if ((eh->tls_mask & TLS_TLS) != 0)
6004 1.1 christos {
6005 1.1 christos if ((eh->tls_mask & TLS_LD) != 0)
6006 1.1 christos {
6007 1.1 christos if (!eh->elf.def_dynamic)
6008 1.1 christos /* We'll just use htab->tlsld_got.offset. This should
6009 1.1 christos always be the case. It's a little odd if we have
6010 1.1 christos a local dynamic reloc against a non-local symbol. */
6011 1.1 christos htab->tlsld_got.refcount += 1;
6012 1.1 christos else
6013 1.1 christos need += 8;
6014 1.1 christos }
6015 1.1 christos if ((eh->tls_mask & TLS_GD) != 0)
6016 1.1.1.4 christos need += 8;
6017 1.1.1.5 christos if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
6018 1.1.1.5 christos need += 4;
6019 1.1.1.5 christos if ((eh->tls_mask & TLS_DTPREL) != 0)
6020 1.1 christos need += 4;
6021 1.1 christos }
6022 1.1 christos else
6023 1.1.1.5 christos need += 4;
6024 1.1 christos if (need == 0)
6025 1.1 christos eh->elf.got.offset = (bfd_vma) -1;
6026 1.1.1.5 christos else
6027 1.1 christos {
6028 1.1 christos eh->elf.got.offset = allocate_got (htab, need);
6029 1.1 christos if ((bfd_link_pic (info)
6030 1.1 christos || (htab->elf.dynamic_sections_created
6031 1.1 christos && eh->elf.dynindx != -1
6032 1.1 christos && !SYMBOL_REFERENCES_LOCAL (info, &eh->elf)))
6033 1.1 christos && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
6034 1.1 christos || eh->elf.root.type != bfd_link_hash_undefweak))
6035 1.1 christos {
6036 1.1 christos asection *rsec = htab->elf.srelgot;
6037 1.1 christos
6038 1.1 christos if (eh->elf.type == STT_GNU_IFUNC)
6039 1.1.1.5 christos rsec = htab->elf.irelplt;
6040 1.1.1.5 christos /* All the entries we allocated need relocs.
6041 1.1.1.5 christos Except LD only needs one. */
6042 1.1.1.5 christos if ((eh->tls_mask & TLS_LD) != 0
6043 1.1.1.5 christos && eh->elf.def_dynamic)
6044 1.1.1.5 christos need -= 4;
6045 1.1 christos rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
6046 1.1 christos }
6047 1.1 christos }
6048 1.1 christos }
6049 1.1 christos else
6050 1.1 christos eh->elf.got.offset = (bfd_vma) -1;
6051 1.1.1.5 christos
6052 1.1 christos if (!htab->elf.dynamic_sections_created
6053 1.1 christos && h->type != STT_GNU_IFUNC)
6054 1.1 christos eh->dyn_relocs = NULL;
6055 1.1 christos
6056 1.1 christos if (eh->dyn_relocs == NULL)
6057 1.1 christos ;
6058 1.1 christos
6059 1.1 christos /* In the shared -Bsymbolic case, discard space allocated for
6060 1.1 christos dynamic pc-relative relocs against symbols which turn out to be
6061 1.1 christos defined in regular objects. For the normal shared case, discard
6062 1.1 christos space for relocs that have become local due to symbol visibility
6063 1.1 christos changes. */
6064 1.1 christos else if (bfd_link_pic (info))
6065 1.1 christos {
6066 1.1 christos /* Relocs that use pc_count are those that appear on a call insn,
6067 1.1 christos or certain REL relocs (see must_be_dyn_reloc) that can be
6068 1.1 christos generated via assembly. We want calls to protected symbols to
6069 1.1 christos resolve directly to the function rather than going via the plt.
6070 1.1 christos If people want function pointer comparisons to work as expected
6071 1.1 christos then they should avoid writing weird assembly. */
6072 1.1 christos if (SYMBOL_CALLS_LOCAL (info, h))
6073 1.1 christos {
6074 1.1 christos struct elf_dyn_relocs **pp;
6075 1.1 christos
6076 1.1 christos for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6077 1.1 christos {
6078 1.1 christos p->count -= p->pc_count;
6079 1.1 christos p->pc_count = 0;
6080 1.1 christos if (p->count == 0)
6081 1.1 christos *pp = p->next;
6082 1.1 christos else
6083 1.1 christos pp = &p->next;
6084 1.1 christos }
6085 1.1 christos }
6086 1.1 christos
6087 1.1 christos if (htab->is_vxworks)
6088 1.1 christos {
6089 1.1 christos struct elf_dyn_relocs **pp;
6090 1.1 christos
6091 1.1 christos for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6092 1.1 christos {
6093 1.1 christos if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
6094 1.1 christos *pp = p->next;
6095 1.1 christos else
6096 1.1 christos pp = &p->next;
6097 1.1 christos }
6098 1.1 christos }
6099 1.1 christos
6100 1.1 christos /* Discard relocs on undefined symbols that must be local. */
6101 1.1 christos if (eh->dyn_relocs != NULL
6102 1.1 christos && h->root.type == bfd_link_hash_undefined
6103 1.1 christos && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6104 1.1.1.5 christos || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6105 1.1.1.5 christos eh->dyn_relocs = NULL;
6106 1.1 christos
6107 1.1 christos /* Also discard relocs on undefined weak syms with non-default
6108 1.1 christos visibility. */
6109 1.1 christos if (eh->dyn_relocs != NULL
6110 1.1.1.5 christos && h->root.type == bfd_link_hash_undefweak)
6111 1.1 christos {
6112 1.1 christos if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
6113 1.1 christos eh->dyn_relocs = NULL;
6114 1.1.1.3 christos
6115 1.1.1.3 christos /* Make sure undefined weak symbols are output as a dynamic
6116 1.1.1.3 christos symbol in PIEs. */
6117 1.1.1.3 christos else if (!ensure_undefweak_dynamic (info, h))
6118 1.1.1.3 christos return FALSE;
6119 1.1 christos }
6120 1.1 christos }
6121 1.1 christos else if (ELIMINATE_COPY_RELOCS)
6122 1.1.1.5 christos {
6123 1.1.1.5 christos /* For the non-pic case, discard space for relocs against
6124 1.1 christos symbols which turn out to need copy relocs or are not
6125 1.1.1.5 christos dynamic. */
6126 1.1.1.5 christos if (!h->non_got_ref
6127 1.1 christos && !h->def_regular
6128 1.1.1.5 christos && !(h->protected_def
6129 1.1.1.5 christos && eh->has_addr16_ha
6130 1.1 christos && eh->has_addr16_lo
6131 1.1 christos && htab->params->pic_fixup > 0))
6132 1.1.1.5 christos {
6133 1.1 christos /* Make sure this symbol is output as a dynamic symbol.
6134 1.1 christos Undefined weak syms won't yet be marked as dynamic. */
6135 1.1 christos if (!ensure_undefweak_dynamic (info, h))
6136 1.1 christos return FALSE;
6137 1.1.1.5 christos
6138 1.1 christos if (h->dynindx == -1)
6139 1.1 christos eh->dyn_relocs = NULL;
6140 1.1 christos }
6141 1.1.1.5 christos else
6142 1.1.1.5 christos eh->dyn_relocs = NULL;
6143 1.1.1.5 christos }
6144 1.1.1.5 christos
6145 1.1.1.5 christos /* Allocate space. */
6146 1.1.1.5 christos for (p = eh->dyn_relocs; p != NULL; p = p->next)
6147 1.1.1.5 christos {
6148 1.1.1.5 christos asection *sreloc = elf_section_data (p->sec)->sreloc;
6149 1.1.1.5 christos if (eh->elf.type == STT_GNU_IFUNC)
6150 1.1.1.5 christos sreloc = htab->elf.irelplt;
6151 1.1.1.5 christos sreloc->size += p->count * sizeof (Elf32_External_Rela);
6152 1.1.1.5 christos }
6153 1.1.1.5 christos
6154 1.1.1.5 christos /* Handle PLT relocs. Done last, after dynindx has settled. */
6155 1.1.1.5 christos dyn = htab->elf.dynamic_sections_created && h->dynindx != -1;
6156 1.1.1.5 christos if (dyn || h->type == STT_GNU_IFUNC)
6157 1.1.1.5 christos {
6158 1.1.1.5 christos struct plt_entry *ent;
6159 1.1.1.5 christos bfd_boolean doneone = FALSE;
6160 1.1.1.5 christos bfd_vma plt_offset = 0, glink_offset = 0;
6161 1.1.1.5 christos
6162 1.1.1.5 christos for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6163 1.1.1.5 christos if (ent->plt.refcount > 0)
6164 1.1.1.5 christos {
6165 1.1.1.5 christos asection *s = htab->elf.splt;
6166 1.1.1.5 christos
6167 1.1.1.5 christos if (!dyn)
6168 1.1.1.5 christos s = htab->elf.iplt;
6169 1.1.1.5 christos
6170 1.1.1.5 christos if (htab->plt_type == PLT_NEW || !dyn)
6171 1.1.1.5 christos {
6172 1.1.1.5 christos if (!doneone)
6173 1.1.1.5 christos {
6174 1.1.1.5 christos plt_offset = s->size;
6175 1.1.1.5 christos s->size += 4;
6176 1.1.1.5 christos }
6177 1.1.1.5 christos ent->plt.offset = plt_offset;
6178 1.1.1.5 christos
6179 1.1.1.5 christos s = htab->glink;
6180 1.1.1.5 christos if (!doneone || bfd_link_pic (info))
6181 1.1.1.5 christos {
6182 1.1.1.5 christos glink_offset = s->size;
6183 1.1.1.5 christos s->size += GLINK_ENTRY_SIZE;
6184 1.1.1.5 christos if (h == htab->tls_get_addr
6185 1.1.1.5 christos && !htab->params->no_tls_get_addr_opt)
6186 1.1.1.5 christos s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
6187 1.1.1.5 christos }
6188 1.1.1.5 christos if (!doneone
6189 1.1.1.5 christos && !bfd_link_pic (info)
6190 1.1.1.5 christos && h->def_dynamic
6191 1.1.1.5 christos && !h->def_regular)
6192 1.1.1.5 christos {
6193 1.1.1.5 christos h->root.u.def.section = s;
6194 1.1.1.5 christos h->root.u.def.value = glink_offset;
6195 1.1.1.5 christos }
6196 1.1.1.5 christos ent->glink_offset = glink_offset;
6197 1.1.1.5 christos
6198 1.1.1.5 christos if (htab->params->emit_stub_syms
6199 1.1.1.5 christos && !add_stub_sym (ent, h, info))
6200 1.1.1.5 christos return FALSE;
6201 1.1.1.5 christos }
6202 1.1.1.5 christos else
6203 1.1.1.5 christos {
6204 1.1.1.5 christos if (!doneone)
6205 1.1.1.5 christos {
6206 1.1.1.5 christos /* If this is the first .plt entry, make room
6207 1.1.1.5 christos for the special first entry. */
6208 1.1.1.5 christos if (s->size == 0)
6209 1.1.1.5 christos s->size += htab->plt_initial_entry_size;
6210 1.1.1.5 christos
6211 1.1.1.5 christos /* The PowerPC PLT is actually composed of two
6212 1.1.1.5 christos parts, the first part is 2 words (for a load
6213 1.1.1.5 christos and a jump), and then there is a remaining
6214 1.1.1.5 christos word available at the end. */
6215 1.1.1.5 christos plt_offset = (htab->plt_initial_entry_size
6216 1.1.1.5 christos + (htab->plt_slot_size
6217 1.1.1.5 christos * ((s->size
6218 1.1.1.5 christos - htab->plt_initial_entry_size)
6219 1.1.1.5 christos / htab->plt_entry_size)));
6220 1.1.1.5 christos
6221 1.1.1.5 christos /* If this symbol is not defined in a regular
6222 1.1.1.5 christos file, and we are not generating a shared
6223 1.1.1.5 christos library, then set the symbol to this location
6224 1.1.1.5 christos in the .plt. This is to avoid text
6225 1.1.1.5 christos relocations, and is required to make
6226 1.1.1.5 christos function pointers compare as equal between
6227 1.1.1.5 christos the normal executable and the shared library. */
6228 1.1.1.5 christos if (! bfd_link_pic (info)
6229 1.1.1.5 christos && h->def_dynamic
6230 1.1.1.5 christos && !h->def_regular)
6231 1.1.1.5 christos {
6232 1.1.1.5 christos h->root.u.def.section = s;
6233 1.1.1.5 christos h->root.u.def.value = plt_offset;
6234 1.1.1.5 christos }
6235 1.1.1.5 christos
6236 1.1.1.5 christos /* Make room for this entry. */
6237 1.1.1.5 christos s->size += htab->plt_entry_size;
6238 1.1.1.5 christos /* After the 8192nd entry, room for two entries
6239 1.1.1.5 christos is allocated. */
6240 1.1.1.5 christos if (htab->plt_type == PLT_OLD
6241 1.1.1.5 christos && (s->size - htab->plt_initial_entry_size)
6242 1.1.1.5 christos / htab->plt_entry_size
6243 1.1.1.5 christos > PLT_NUM_SINGLE_ENTRIES)
6244 1.1.1.5 christos s->size += htab->plt_entry_size;
6245 1.1.1.5 christos }
6246 1.1.1.5 christos ent->plt.offset = plt_offset;
6247 1.1.1.5 christos }
6248 1.1.1.5 christos
6249 1.1.1.5 christos /* We also need to make an entry in the .rela.plt section. */
6250 1.1.1.5 christos if (!doneone)
6251 1.1.1.5 christos {
6252 1.1.1.5 christos if (!dyn)
6253 1.1.1.5 christos htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6254 1.1.1.5 christos else
6255 1.1.1.5 christos {
6256 1.1.1.5 christos htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
6257 1.1.1.5 christos
6258 1.1.1.5 christos if (htab->plt_type == PLT_VXWORKS)
6259 1.1.1.5 christos {
6260 1.1.1.5 christos /* Allocate space for the unloaded relocations. */
6261 1.1.1.5 christos if (!bfd_link_pic (info)
6262 1.1.1.5 christos && htab->elf.dynamic_sections_created)
6263 1.1.1.5 christos {
6264 1.1.1.5 christos if (ent->plt.offset
6265 1.1.1.5 christos == (bfd_vma) htab->plt_initial_entry_size)
6266 1.1.1.5 christos {
6267 1.1.1.5 christos htab->srelplt2->size
6268 1.1.1.5 christos += (sizeof (Elf32_External_Rela)
6269 1.1.1.5 christos * VXWORKS_PLTRESOLVE_RELOCS);
6270 1.1.1.5 christos }
6271 1.1.1.5 christos
6272 1.1.1.5 christos htab->srelplt2->size
6273 1.1.1.5 christos += (sizeof (Elf32_External_Rela)
6274 1.1.1.5 christos * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
6275 1.1.1.5 christos }
6276 1.1.1.5 christos
6277 1.1.1.5 christos /* Every PLT entry has an associated GOT entry in
6278 1.1.1.5 christos .got.plt. */
6279 1.1.1.5 christos htab->elf.sgotplt->size += 4;
6280 1.1.1.5 christos }
6281 1.1.1.5 christos }
6282 1.1.1.5 christos doneone = TRUE;
6283 1.1.1.5 christos }
6284 1.1.1.5 christos }
6285 1.1.1.5 christos else
6286 1.1.1.5 christos ent->plt.offset = (bfd_vma) -1;
6287 1.1 christos
6288 1.1 christos if (!doneone)
6289 1.1 christos {
6290 1.1 christos h->plt.plist = NULL;
6291 1.1 christos h->needs_plt = 0;
6292 1.1 christos }
6293 1.1 christos }
6294 1.1 christos else
6295 1.1 christos {
6296 1.1 christos h->plt.plist = NULL;
6297 1.1 christos h->needs_plt = 0;
6298 1.1 christos }
6299 1.1 christos
6300 1.1 christos return TRUE;
6301 1.1 christos }
6302 1.1 christos
6303 1.1 christos /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6304 1.1 christos read-only sections. */
6305 1.1 christos
6306 1.1 christos static bfd_boolean
6307 1.1 christos maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
6308 1.1 christos {
6309 1.1 christos if (h->root.type == bfd_link_hash_indirect)
6310 1.1 christos return TRUE;
6311 1.1 christos
6312 1.1 christos if (readonly_dynrelocs (h))
6313 1.1 christos {
6314 1.1 christos ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
6315 1.1 christos
6316 1.1 christos /* Not an error, just cut short the traversal. */
6317 1.1 christos return FALSE;
6318 1.1 christos }
6319 1.1 christos return TRUE;
6320 1.1 christos }
6321 1.1 christos
6322 1.1 christos static const unsigned char glink_eh_frame_cie[] =
6323 1.1 christos {
6324 1.1 christos 0, 0, 0, 16, /* length. */
6325 1.1 christos 0, 0, 0, 0, /* id. */
6326 1.1.1.2 christos 1, /* CIE version. */
6327 1.1 christos 'z', 'R', 0, /* Augmentation string. */
6328 1.1 christos 4, /* Code alignment. */
6329 1.1 christos 0x7c, /* Data alignment. */
6330 1.1 christos 65, /* RA reg. */
6331 1.1 christos 1, /* Augmentation size. */
6332 1.1 christos DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6333 1.1 christos DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6334 1.1 christos };
6335 1.1 christos
6336 1.1 christos /* Set the sizes of the dynamic sections. */
6337 1.1 christos
6338 1.1 christos static bfd_boolean
6339 1.1 christos ppc_elf_size_dynamic_sections (bfd *output_bfd,
6340 1.1 christos struct bfd_link_info *info)
6341 1.1 christos {
6342 1.1 christos struct ppc_elf_link_hash_table *htab;
6343 1.1 christos asection *s;
6344 1.1.1.4 christos bfd_boolean relocs;
6345 1.1 christos bfd *ibfd;
6346 1.1 christos
6347 1.1 christos #ifdef DEBUG
6348 1.1 christos fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6349 1.1 christos #endif
6350 1.1 christos
6351 1.1 christos htab = ppc_elf_hash_table (info);
6352 1.1 christos BFD_ASSERT (htab->elf.dynobj != NULL);
6353 1.1 christos
6354 1.1 christos if (elf_hash_table (info)->dynamic_sections_created)
6355 1.1 christos {
6356 1.1 christos /* Set the contents of the .interp section to the interpreter. */
6357 1.1 christos if (bfd_link_executable (info) && !info->nointerp)
6358 1.1 christos {
6359 1.1 christos s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6360 1.1.1.2 christos BFD_ASSERT (s != NULL);
6361 1.1 christos s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6362 1.1 christos s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6363 1.1 christos }
6364 1.1 christos }
6365 1.1 christos
6366 1.1 christos if (htab->plt_type == PLT_OLD)
6367 1.1 christos htab->got_header_size = 16;
6368 1.1 christos else if (htab->plt_type == PLT_NEW)
6369 1.1 christos htab->got_header_size = 12;
6370 1.1 christos
6371 1.1 christos /* Set up .got offsets for local syms, and space for local dynamic
6372 1.1 christos relocs. */
6373 1.1 christos for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
6374 1.1 christos {
6375 1.1 christos bfd_signed_vma *local_got;
6376 1.1 christos bfd_signed_vma *end_local_got;
6377 1.1 christos struct plt_entry **local_plt;
6378 1.1 christos struct plt_entry **end_local_plt;
6379 1.1 christos char *lgot_masks;
6380 1.1 christos bfd_size_type locsymcount;
6381 1.1 christos Elf_Internal_Shdr *symtab_hdr;
6382 1.1 christos
6383 1.1 christos if (!is_ppc_elf (ibfd))
6384 1.1 christos continue;
6385 1.1 christos
6386 1.1 christos for (s = ibfd->sections; s != NULL; s = s->next)
6387 1.1 christos {
6388 1.1 christos struct ppc_dyn_relocs *p;
6389 1.1 christos
6390 1.1 christos for (p = ((struct ppc_dyn_relocs *)
6391 1.1 christos elf_section_data (s)->local_dynrel);
6392 1.1 christos p != NULL;
6393 1.1 christos p = p->next)
6394 1.1 christos {
6395 1.1 christos if (!bfd_is_abs_section (p->sec)
6396 1.1 christos && bfd_is_abs_section (p->sec->output_section))
6397 1.1 christos {
6398 1.1 christos /* Input section has been discarded, either because
6399 1.1 christos it is a copy of a linkonce section or due to
6400 1.1 christos linker script /DISCARD/, so we'll be discarding
6401 1.1.1.5 christos the relocs too. */
6402 1.1 christos }
6403 1.1 christos else if (htab->is_vxworks
6404 1.1 christos && strcmp (p->sec->output_section->name,
6405 1.1 christos ".tls_vars") == 0)
6406 1.1 christos {
6407 1.1 christos /* Relocations in vxworks .tls_vars sections are
6408 1.1 christos handled specially by the loader. */
6409 1.1 christos }
6410 1.1 christos else if (p->count != 0)
6411 1.1 christos {
6412 1.1 christos asection *sreloc = elf_section_data (p->sec)->sreloc;
6413 1.1 christos if (p->ifunc)
6414 1.1 christos sreloc = htab->elf.irelplt;
6415 1.1 christos sreloc->size += p->count * sizeof (Elf32_External_Rela);
6416 1.1 christos if ((p->sec->output_section->flags
6417 1.1 christos & (SEC_READONLY | SEC_ALLOC))
6418 1.1 christos == (SEC_READONLY | SEC_ALLOC))
6419 1.1 christos info->flags |= DF_TEXTREL;
6420 1.1 christos }
6421 1.1 christos }
6422 1.1 christos }
6423 1.1 christos
6424 1.1 christos local_got = elf_local_got_refcounts (ibfd);
6425 1.1 christos if (!local_got)
6426 1.1 christos continue;
6427 1.1 christos
6428 1.1 christos symtab_hdr = &elf_symtab_hdr (ibfd);
6429 1.1 christos locsymcount = symtab_hdr->sh_info;
6430 1.1 christos end_local_got = local_got + locsymcount;
6431 1.1 christos local_plt = (struct plt_entry **) end_local_got;
6432 1.1 christos end_local_plt = local_plt + locsymcount;
6433 1.1 christos lgot_masks = (char *) end_local_plt;
6434 1.1 christos
6435 1.1 christos for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6436 1.1 christos if (*local_got > 0)
6437 1.1 christos {
6438 1.1 christos unsigned int need = 0;
6439 1.1 christos if ((*lgot_masks & TLS_TLS) != 0)
6440 1.1 christos {
6441 1.1 christos if ((*lgot_masks & TLS_GD) != 0)
6442 1.1 christos need += 8;
6443 1.1 christos if ((*lgot_masks & TLS_LD) != 0)
6444 1.1.1.4 christos htab->tlsld_got.refcount += 1;
6445 1.1 christos if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6446 1.1.1.5 christos need += 4;
6447 1.1 christos if ((*lgot_masks & TLS_DTPREL) != 0)
6448 1.1.1.5 christos need += 4;
6449 1.1 christos }
6450 1.1 christos else
6451 1.1 christos need += 4;
6452 1.1 christos if (need == 0)
6453 1.1 christos *local_got = (bfd_vma) -1;
6454 1.1 christos else
6455 1.1 christos {
6456 1.1 christos *local_got = allocate_got (htab, need);
6457 1.1 christos if (bfd_link_pic (info))
6458 1.1 christos {
6459 1.1 christos asection *srel = htab->elf.srelgot;
6460 1.1 christos if ((*lgot_masks & PLT_IFUNC) != 0)
6461 1.1 christos srel = htab->elf.irelplt;
6462 1.1 christos srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6463 1.1 christos }
6464 1.1 christos }
6465 1.1 christos }
6466 1.1 christos else
6467 1.1 christos *local_got = (bfd_vma) -1;
6468 1.1 christos
6469 1.1.1.5 christos if (htab->is_vxworks)
6470 1.1 christos continue;
6471 1.1 christos
6472 1.1 christos /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6473 1.1 christos for (; local_plt < end_local_plt; ++local_plt)
6474 1.1 christos {
6475 1.1 christos struct plt_entry *ent;
6476 1.1 christos bfd_boolean doneone = FALSE;
6477 1.1 christos bfd_vma plt_offset = 0, glink_offset = 0;
6478 1.1 christos
6479 1.1.1.4 christos for (ent = *local_plt; ent != NULL; ent = ent->next)
6480 1.1 christos if (ent->plt.refcount > 0)
6481 1.1 christos {
6482 1.1 christos s = htab->elf.iplt;
6483 1.1 christos
6484 1.1 christos if (!doneone)
6485 1.1 christos {
6486 1.1 christos plt_offset = s->size;
6487 1.1 christos s->size += 4;
6488 1.1.1.5 christos }
6489 1.1 christos ent->plt.offset = plt_offset;
6490 1.1 christos
6491 1.1 christos s = htab->glink;
6492 1.1 christos if (!doneone || bfd_link_pic (info))
6493 1.1 christos {
6494 1.1 christos glink_offset = s->size;
6495 1.1 christos s->size += GLINK_ENTRY_SIZE;
6496 1.1 christos }
6497 1.1 christos ent->glink_offset = glink_offset;
6498 1.1 christos
6499 1.1 christos if (!doneone)
6500 1.1 christos {
6501 1.1 christos htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6502 1.1 christos doneone = TRUE;
6503 1.1.1.4 christos }
6504 1.1.1.5 christos }
6505 1.1 christos else
6506 1.1 christos ent->plt.offset = (bfd_vma) -1;
6507 1.1 christos }
6508 1.1 christos }
6509 1.1.1.5 christos
6510 1.1 christos /* Allocate space for global sym dynamic relocs. */
6511 1.1 christos elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6512 1.1 christos
6513 1.1 christos if (htab->tlsld_got.refcount > 0)
6514 1.1 christos {
6515 1.1 christos htab->tlsld_got.offset = allocate_got (htab, 8);
6516 1.1 christos if (bfd_link_pic (info))
6517 1.1.1.5 christos htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
6518 1.1 christos }
6519 1.1.1.5 christos else
6520 1.1 christos htab->tlsld_got.offset = (bfd_vma) -1;
6521 1.1 christos
6522 1.1.1.5 christos if (htab->elf.sgot != NULL && htab->plt_type != PLT_VXWORKS)
6523 1.1 christos {
6524 1.1 christos unsigned int g_o_t = 32768;
6525 1.1 christos
6526 1.1 christos /* If we haven't allocated the header, do so now. When we get here,
6527 1.1.1.4 christos for old plt/got the got size will be 0 to 32764 (not allocated),
6528 1.1 christos or 32780 to 65536 (header allocated). For new plt/got, the
6529 1.1 christos corresponding ranges are 0 to 32768 and 32780 to 65536. */
6530 1.1.1.2 christos if (htab->elf.sgot->size <= 32768)
6531 1.1.1.2 christos {
6532 1.1.1.2 christos g_o_t = htab->elf.sgot->size;
6533 1.1.1.2 christos if (htab->plt_type == PLT_OLD)
6534 1.1.1.2 christos g_o_t += 4;
6535 1.1.1.2 christos htab->elf.sgot->size += htab->got_header_size;
6536 1.1.1.2 christos }
6537 1.1.1.2 christos
6538 1.1.1.2 christos htab->elf.hgot->root.u.def.value = g_o_t;
6539 1.1.1.2 christos }
6540 1.1.1.2 christos if (bfd_link_pic (info))
6541 1.1.1.2 christos {
6542 1.1.1.2 christos struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6543 1.1 christos
6544 1.1 christos sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6545 1.1 christos sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6546 1.1 christos }
6547 1.1 christos if (info->emitrelocations)
6548 1.1 christos {
6549 1.1 christos struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6550 1.1.1.5 christos
6551 1.1.1.5 christos if (sda != NULL && sda->ref_regular)
6552 1.1.1.5 christos sda->root.u.def.section->flags |= SEC_KEEP;
6553 1.1 christos sda = htab->sdata[1].sym;
6554 1.1 christos if (sda != NULL && sda->ref_regular)
6555 1.1.1.2 christos sda->root.u.def.section->flags |= SEC_KEEP;
6556 1.1.1.2 christos }
6557 1.1 christos
6558 1.1 christos if (htab->glink != NULL
6559 1.1.1.2 christos && htab->glink->size != 0
6560 1.1 christos && htab->elf.dynamic_sections_created)
6561 1.1 christos {
6562 1.1 christos htab->glink_pltresolve = htab->glink->size;
6563 1.1 christos /* Space for the branch table. ??? We don't need entries for
6564 1.1 christos non-dynamic symbols in this table. This case can arise with
6565 1.1 christos static ifuncs or forced local ifuncs. */
6566 1.1 christos htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6567 1.1 christos /* Pad out to align the start of PLTresolve. */
6568 1.1 christos htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6569 1.1 christos ? 63 : 15);
6570 1.1 christos htab->glink->size += GLINK_PLTRESOLVE;
6571 1.1 christos
6572 1.1 christos if (htab->params->emit_stub_syms)
6573 1.1 christos {
6574 1.1 christos struct elf_link_hash_entry *sh;
6575 1.1 christos sh = elf_link_hash_lookup (&htab->elf, "__glink",
6576 1.1.1.3 christos TRUE, FALSE, FALSE);
6577 1.1 christos if (sh == NULL)
6578 1.1 christos return FALSE;
6579 1.1 christos if (sh->root.type == bfd_link_hash_new)
6580 1.1 christos {
6581 1.1 christos sh->root.type = bfd_link_hash_defined;
6582 1.1 christos sh->root.u.def.section = htab->glink;
6583 1.1 christos sh->root.u.def.value = htab->glink_pltresolve;
6584 1.1 christos sh->ref_regular = 1;
6585 1.1 christos sh->def_regular = 1;
6586 1.1 christos sh->ref_regular_nonweak = 1;
6587 1.1 christos sh->forced_local = 1;
6588 1.1 christos sh->non_elf = 0;
6589 1.1 christos sh->root.linker_def = 1;
6590 1.1 christos }
6591 1.1 christos sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6592 1.1.1.3 christos TRUE, FALSE, FALSE);
6593 1.1 christos if (sh == NULL)
6594 1.1 christos return FALSE;
6595 1.1 christos if (sh->root.type == bfd_link_hash_new)
6596 1.1 christos {
6597 1.1 christos sh->root.type = bfd_link_hash_defined;
6598 1.1 christos sh->root.u.def.section = htab->glink;
6599 1.1 christos sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6600 1.1 christos sh->ref_regular = 1;
6601 1.1 christos sh->def_regular = 1;
6602 1.1 christos sh->ref_regular_nonweak = 1;
6603 1.1 christos sh->forced_local = 1;
6604 1.1 christos sh->non_elf = 0;
6605 1.1.1.4 christos sh->root.linker_def = 1;
6606 1.1 christos }
6607 1.1 christos }
6608 1.1 christos }
6609 1.1 christos
6610 1.1 christos if (htab->glink != NULL
6611 1.1 christos && htab->glink->size != 0
6612 1.1 christos && htab->glink_eh_frame != NULL
6613 1.1 christos && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6614 1.1 christos && _bfd_elf_eh_frame_present (info))
6615 1.1 christos {
6616 1.1 christos s = htab->glink_eh_frame;
6617 1.1 christos s->size = sizeof (glink_eh_frame_cie) + 20;
6618 1.1 christos if (bfd_link_pic (info))
6619 1.1 christos {
6620 1.1 christos s->size += 4;
6621 1.1 christos if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6622 1.1 christos s->size += 4;
6623 1.1.1.5 christos }
6624 1.1.1.5 christos }
6625 1.1 christos
6626 1.1 christos /* We've now determined the sizes of the various dynamic sections.
6627 1.1 christos Allocate memory for them. */
6628 1.1 christos relocs = FALSE;
6629 1.1 christos for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6630 1.1 christos {
6631 1.1 christos bfd_boolean strip_section = TRUE;
6632 1.1 christos
6633 1.1 christos if ((s->flags & SEC_LINKER_CREATED) == 0)
6634 1.1.1.5 christos continue;
6635 1.1 christos
6636 1.1 christos if (s == htab->elf.splt
6637 1.1.1.5 christos || s == htab->elf.sgot)
6638 1.1 christos {
6639 1.1.1.5 christos /* We'd like to strip these sections if they aren't needed, but if
6640 1.1.1.5 christos we've exported dynamic symbols from them we must leave them.
6641 1.1.1.2 christos It's too late to tell BFD to get rid of the symbols. */
6642 1.1 christos if (htab->elf.hplt != NULL)
6643 1.1 christos strip_section = FALSE;
6644 1.1 christos /* Strip this section if we don't need it; see the
6645 1.1.1.2 christos comment below. */
6646 1.1.1.2 christos }
6647 1.1.1.2 christos else if (s == htab->elf.iplt
6648 1.1.1.2 christos || s == htab->glink
6649 1.1.1.2 christos || s == htab->glink_eh_frame
6650 1.1 christos || s == htab->elf.sgotplt
6651 1.1 christos || s == htab->sbss
6652 1.1 christos || s == htab->elf.sdynbss
6653 1.1 christos || s == htab->elf.sdynrelro
6654 1.1 christos || s == htab->dynsbss)
6655 1.1 christos {
6656 1.1 christos /* Strip these too. */
6657 1.1 christos }
6658 1.1 christos else if (s == htab->sdata[0].section
6659 1.1 christos || s == htab->sdata[1].section)
6660 1.1 christos {
6661 1.1 christos strip_section = (s->flags & SEC_KEEP) == 0;
6662 1.1 christos }
6663 1.1 christos else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6664 1.1 christos ".rela"))
6665 1.1 christos {
6666 1.1 christos if (s->size != 0)
6667 1.1 christos {
6668 1.1 christos /* Remember whether there are any relocation sections. */
6669 1.1 christos relocs = TRUE;
6670 1.1 christos
6671 1.1 christos /* We use the reloc_count field as a counter if we need
6672 1.1 christos to copy relocs into the output file. */
6673 1.1 christos s->reloc_count = 0;
6674 1.1 christos }
6675 1.1 christos }
6676 1.1 christos else
6677 1.1 christos {
6678 1.1 christos /* It's not one of our sections, so don't allocate space. */
6679 1.1 christos continue;
6680 1.1 christos }
6681 1.1 christos
6682 1.1 christos if (s->size == 0 && strip_section)
6683 1.1 christos {
6684 1.1 christos /* If we don't need this section, strip it from the
6685 1.1 christos output file. This is mostly to handle .rela.bss and
6686 1.1 christos .rela.plt. We must create both sections in
6687 1.1 christos create_dynamic_sections, because they must be created
6688 1.1 christos before the linker maps input sections to output
6689 1.1 christos sections. The linker does that before
6690 1.1 christos adjust_dynamic_symbol is called, and it is that
6691 1.1 christos function which decides whether anything needs to go
6692 1.1 christos into these sections. */
6693 1.1 christos s->flags |= SEC_EXCLUDE;
6694 1.1 christos continue;
6695 1.1 christos }
6696 1.1 christos
6697 1.1 christos if ((s->flags & SEC_HAS_CONTENTS) == 0)
6698 1.1 christos continue;
6699 1.1 christos
6700 1.1 christos /* Allocate memory for the section contents. */
6701 1.1 christos s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6702 1.1 christos if (s->contents == NULL)
6703 1.1.1.4 christos return FALSE;
6704 1.1 christos }
6705 1.1 christos
6706 1.1 christos if (htab->elf.dynamic_sections_created)
6707 1.1 christos {
6708 1.1 christos /* Add some entries to the .dynamic section. We fill in the
6709 1.1.1.5 christos values later, in ppc_elf_finish_dynamic_sections, but we
6710 1.1 christos must add the entries now so that we get the correct size for
6711 1.1 christos the .dynamic section. The DT_DEBUG entry is filled in by the
6712 1.1 christos dynamic linker and used by the debugger. */
6713 1.1 christos #define add_dynamic_entry(TAG, VAL) \
6714 1.1 christos _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6715 1.1 christos
6716 1.1 christos if (bfd_link_executable (info))
6717 1.1 christos {
6718 1.1.1.2 christos if (!add_dynamic_entry (DT_DEBUG, 0))
6719 1.1.1.2 christos return FALSE;
6720 1.1.1.2 christos }
6721 1.1 christos
6722 1.1 christos if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
6723 1.1 christos {
6724 1.1.1.2 christos if (!add_dynamic_entry (DT_PLTGOT, 0)
6725 1.1 christos || !add_dynamic_entry (DT_PLTRELSZ, 0)
6726 1.1 christos || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6727 1.1 christos || !add_dynamic_entry (DT_JMPREL, 0))
6728 1.1 christos return FALSE;
6729 1.1 christos }
6730 1.1 christos
6731 1.1 christos if (htab->plt_type == PLT_NEW
6732 1.1 christos && htab->glink != NULL
6733 1.1 christos && htab->glink->size != 0)
6734 1.1 christos {
6735 1.1 christos if (!add_dynamic_entry (DT_PPC_GOT, 0))
6736 1.1 christos return FALSE;
6737 1.1 christos if (!htab->params->no_tls_get_addr_opt
6738 1.1 christos && htab->tls_get_addr != NULL
6739 1.1 christos && htab->tls_get_addr->plt.plist != NULL
6740 1.1 christos && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6741 1.1 christos return FALSE;
6742 1.1 christos }
6743 1.1 christos
6744 1.1 christos if (relocs)
6745 1.1 christos {
6746 1.1 christos if (!add_dynamic_entry (DT_RELA, 0)
6747 1.1 christos || !add_dynamic_entry (DT_RELASZ, 0)
6748 1.1 christos || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6749 1.1 christos return FALSE;
6750 1.1 christos }
6751 1.1 christos
6752 1.1 christos /* If any dynamic relocs apply to a read-only section, then we
6753 1.1 christos need a DT_TEXTREL entry. */
6754 1.1 christos if ((info->flags & DF_TEXTREL) == 0)
6755 1.1 christos elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6756 1.1 christos info);
6757 1.1 christos
6758 1.1 christos if ((info->flags & DF_TEXTREL) != 0)
6759 1.1 christos {
6760 1.1 christos if (!add_dynamic_entry (DT_TEXTREL, 0))
6761 1.1 christos return FALSE;
6762 1.1 christos }
6763 1.1 christos if (htab->is_vxworks
6764 1.1 christos && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6765 1.1 christos return FALSE;
6766 1.1 christos }
6767 1.1 christos #undef add_dynamic_entry
6768 1.1 christos
6769 1.1 christos if (htab->glink_eh_frame != NULL
6770 1.1 christos && htab->glink_eh_frame->contents != NULL)
6771 1.1 christos {
6772 1.1 christos unsigned char *p = htab->glink_eh_frame->contents;
6773 1.1 christos bfd_vma val;
6774 1.1 christos
6775 1.1 christos memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6776 1.1 christos /* CIE length (rewrite in case little-endian). */
6777 1.1 christos bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6778 1.1 christos p += sizeof (glink_eh_frame_cie);
6779 1.1 christos /* FDE length. */
6780 1.1 christos val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6781 1.1 christos bfd_put_32 (htab->elf.dynobj, val, p);
6782 1.1.1.4 christos p += 4;
6783 1.1 christos /* CIE pointer. */
6784 1.1 christos val = p - htab->glink_eh_frame->contents;
6785 1.1 christos bfd_put_32 (htab->elf.dynobj, val, p);
6786 1.1 christos p += 4;
6787 1.1 christos /* Offset to .glink. Set later. */
6788 1.1 christos p += 4;
6789 1.1 christos /* .glink size. */
6790 1.1 christos bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6791 1.1 christos p += 4;
6792 1.1 christos /* Augmentation. */
6793 1.1 christos p += 1;
6794 1.1 christos
6795 1.1 christos if (bfd_link_pic (info)
6796 1.1 christos && htab->elf.dynamic_sections_created)
6797 1.1 christos {
6798 1.1 christos bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6799 1.1 christos if (adv < 64)
6800 1.1 christos *p++ = DW_CFA_advance_loc + adv;
6801 1.1 christos else if (adv < 256)
6802 1.1 christos {
6803 1.1 christos *p++ = DW_CFA_advance_loc1;
6804 1.1 christos *p++ = adv;
6805 1.1 christos }
6806 1.1 christos else if (adv < 65536)
6807 1.1 christos {
6808 1.1 christos *p++ = DW_CFA_advance_loc2;
6809 1.1 christos bfd_put_16 (htab->elf.dynobj, adv, p);
6810 1.1 christos p += 2;
6811 1.1 christos }
6812 1.1 christos else
6813 1.1 christos {
6814 1.1 christos *p++ = DW_CFA_advance_loc4;
6815 1.1 christos bfd_put_32 (htab->elf.dynobj, adv, p);
6816 1.1 christos p += 4;
6817 1.1 christos }
6818 1.1 christos *p++ = DW_CFA_register;
6819 1.1.1.2 christos *p++ = 65;
6820 1.1.1.2 christos p++;
6821 1.1.1.2 christos *p++ = DW_CFA_advance_loc + 4;
6822 1.1.1.2 christos *p++ = DW_CFA_restore_extended;
6823 1.1.1.2 christos *p++ = 65;
6824 1.1.1.2 christos }
6825 1.1.1.2 christos BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6826 1.1.1.2 christos == htab->glink_eh_frame->size);
6827 1.1.1.2 christos }
6828 1.1.1.2 christos
6829 1.1.1.2 christos return TRUE;
6830 1.1.1.2 christos }
6831 1.1.1.2 christos
6832 1.1.1.2 christos /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6833 1.1.1.2 christos if it looks like nothing is using them. */
6834 1.1.1.2 christos
6835 1.1.1.2 christos static void
6836 1.1.1.2 christos maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6837 1.1.1.2 christos {
6838 1.1.1.2 christos struct elf_link_hash_entry *sda = lsect->sym;
6839 1.1.1.2 christos
6840 1.1.1.2 christos if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6841 1.1.1.2 christos {
6842 1.1.1.2 christos asection *s;
6843 1.1.1.2 christos
6844 1.1.1.2 christos s = bfd_get_section_by_name (output_bfd, lsect->name);
6845 1.1.1.2 christos if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6846 1.1.1.2 christos {
6847 1.1.1.2 christos s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6848 1.1.1.2 christos if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6849 1.1.1.2 christos {
6850 1.1.1.2 christos sda->def_regular = 0;
6851 1.1.1.2 christos /* This is somewhat magic. See elf_link_output_extsym. */
6852 1.1.1.2 christos sda->ref_dynamic = 1;
6853 1.1.1.2 christos sda->forced_local = 0;
6854 1.1.1.2 christos }
6855 1.1.1.2 christos }
6856 1.1.1.2 christos }
6857 1.1.1.2 christos }
6858 1.1.1.2 christos
6859 1.1 christos void
6860 1.1 christos ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6861 1.1 christos {
6862 1.1 christos struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6863 1.1 christos
6864 1.1 christos if (htab != NULL)
6865 1.1 christos {
6866 1.1 christos maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6867 1.1 christos maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6868 1.1 christos }
6869 1.1 christos }
6870 1.1 christos
6871 1.1 christos
6872 1.1 christos /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6873 1.1 christos
6874 1.1 christos static bfd_boolean
6875 1.1 christos ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6876 1.1 christos {
6877 1.1 christos if (h->plt.plist != NULL
6878 1.1 christos && !h->def_regular
6879 1.1 christos && (!h->pointer_equality_needed
6880 1.1 christos || !h->ref_regular_nonweak))
6881 1.1 christos return FALSE;
6882 1.1 christos
6883 1.1.1.2 christos return _bfd_elf_hash_symbol (h);
6884 1.1 christos }
6885 1.1 christos
6886 1.1 christos #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6888 1.1 christos
6889 1.1 christos /* Relaxation trampolines. r12 is available for clobbering (r11, is
6890 1.1 christos used for some functions that are allowed to break the ABI). */
6891 1.1 christos static const int shared_stub_entry[] =
6892 1.1 christos {
6893 1.1 christos 0x7c0802a6, /* mflr 0 */
6894 1.1 christos 0x429f0005, /* bcl 20, 31, .Lxxx */
6895 1.1 christos 0x7d8802a6, /* mflr 12 */
6896 1.1 christos 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6897 1.1.1.2 christos 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6898 1.1.1.2 christos 0x7c0803a6, /* mtlr 0 */
6899 1.1.1.2 christos 0x7d8903a6, /* mtctr 12 */
6900 1.1.1.3 christos 0x4e800420, /* bctr */
6901 1.1.1.2 christos };
6902 1.1.1.2 christos
6903 1.1.1.2 christos static const int stub_entry[] =
6904 1.1.1.2 christos {
6905 1.1.1.2 christos 0x3d800000, /* lis 12,xxx@ha */
6906 1.1.1.2 christos 0x398c0000, /* addi 12,12,xxx@l */
6907 1.1.1.2 christos 0x7d8903a6, /* mtctr 12 */
6908 1.1 christos 0x4e800420, /* bctr */
6909 1.1 christos };
6910 1.1 christos
6911 1.1 christos struct ppc_elf_relax_info
6912 1.1 christos {
6913 1.1 christos unsigned int workaround_size;
6914 1.1.1.3 christos unsigned int picfixup_size;
6915 1.1 christos };
6916 1.1.1.3 christos
6917 1.1 christos /* This function implements long branch trampolines, and the ppc476
6918 1.1 christos icache bug workaround. Any section needing trampolines or patch
6919 1.1 christos space for the workaround has its size extended so that we can
6920 1.1 christos add trampolines at the end of the section. */
6921 1.1 christos
6922 1.1 christos static bfd_boolean
6923 1.1 christos ppc_elf_relax_section (bfd *abfd,
6924 1.1 christos asection *isec,
6925 1.1 christos struct bfd_link_info *link_info,
6926 1.1 christos bfd_boolean *again)
6927 1.1 christos {
6928 1.1.1.2 christos struct one_branch_fixup
6929 1.1.1.3 christos {
6930 1.1.1.2 christos struct one_branch_fixup *next;
6931 1.1 christos asection *tsec;
6932 1.1.1.2 christos /* Final link, can use the symbol offset. For a
6933 1.1 christos relocatable link we use the symbol's index. */
6934 1.1.1.3 christos bfd_vma toff;
6935 1.1 christos bfd_vma trampoff;
6936 1.1 christos };
6937 1.1 christos
6938 1.1 christos Elf_Internal_Shdr *symtab_hdr;
6939 1.1 christos bfd_byte *contents = NULL;
6940 1.1.1.2 christos Elf_Internal_Sym *isymbuf = NULL;
6941 1.1 christos Elf_Internal_Rela *internal_relocs = NULL;
6942 1.1 christos Elf_Internal_Rela *irel, *irelend = NULL;
6943 1.1.1.2 christos struct one_branch_fixup *branch_fixups = NULL;
6944 1.1.1.2 christos struct ppc_elf_relax_info *relax_info = NULL;
6945 1.1 christos unsigned changes = 0;
6946 1.1 christos bfd_boolean workaround_change;
6947 1.1 christos struct ppc_elf_link_hash_table *htab;
6948 1.1 christos bfd_size_type trampbase, trampoff, newsize, picfixup_size;
6949 1.1 christos asection *got2;
6950 1.1.1.4 christos bfd_boolean maybe_pasted;
6951 1.1.1.2 christos
6952 1.1.1.2 christos *again = FALSE;
6953 1.1.1.2 christos
6954 1.1.1.2 christos /* No need to do anything with non-alloc or non-code sections. */
6955 1.1.1.2 christos if ((isec->flags & SEC_ALLOC) == 0
6956 1.1.1.2 christos || (isec->flags & SEC_CODE) == 0
6957 1.1.1.2 christos || (isec->flags & SEC_LINKER_CREATED) != 0
6958 1.1.1.2 christos || isec->size < 4)
6959 1.1.1.2 christos return TRUE;
6960 1.1.1.2 christos
6961 1.1.1.2 christos /* We cannot represent the required PIC relocs in the output, so don't
6962 1.1.1.2 christos do anything. The linker doesn't support mixing -shared and -r
6963 1.1.1.2 christos anyway. */
6964 1.1.1.2 christos if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
6965 1.1.1.2 christos return TRUE;
6966 1.1.1.3 christos
6967 1.1.1.3 christos htab = ppc_elf_hash_table (link_info);
6968 1.1.1.2 christos if (htab == NULL)
6969 1.1.1.2 christos return TRUE;
6970 1.1.1.2 christos
6971 1.1.1.2 christos isec->size = (isec->size + 3) & -4;
6972 1.1.1.2 christos if (isec->rawsize == 0)
6973 1.1.1.2 christos isec->rawsize = isec->size;
6974 1.1.1.2 christos trampbase = isec->size;
6975 1.1.1.2 christos
6976 1.1.1.2 christos BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6977 1.1.1.2 christos || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6978 1.1.1.2 christos isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6979 1.1 christos
6980 1.1 christos if (htab->params->ppc476_workaround
6981 1.1 christos || htab->params->pic_fixup > 0)
6982 1.1 christos {
6983 1.1.1.2 christos if (elf_section_data (isec)->sec_info == NULL)
6984 1.1.1.2 christos {
6985 1.1 christos elf_section_data (isec)->sec_info
6986 1.1 christos = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6987 1.1 christos if (elf_section_data (isec)->sec_info == NULL)
6988 1.1.1.3 christos return FALSE;
6989 1.1.1.3 christos }
6990 1.1.1.3 christos relax_info = elf_section_data (isec)->sec_info;
6991 1.1 christos trampbase -= relax_info->workaround_size;
6992 1.1.1.2 christos }
6993 1.1.1.2 christos
6994 1.1 christos maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6995 1.1.1.2 christos || strcmp (isec->output_section->name, ".fini") == 0);
6996 1.1.1.2 christos /* Space for a branch around any trampolines. */
6997 1.1.1.2 christos trampoff = trampbase;
6998 1.1.1.2 christos if (maybe_pasted && trampbase == isec->rawsize)
6999 1.1 christos trampoff += 4;
7000 1.1 christos
7001 1.1.1.2 christos symtab_hdr = &elf_symtab_hdr (abfd);
7002 1.1 christos picfixup_size = 0;
7003 1.1.1.2 christos if (htab->params->branch_trampolines
7004 1.1.1.2 christos || htab->params->pic_fixup > 0)
7005 1.1 christos {
7006 1.1.1.2 christos /* Get a copy of the native relocations. */
7007 1.1.1.2 christos if (isec->reloc_count != 0)
7008 1.1.1.2 christos {
7009 1.1.1.3 christos internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
7010 1.1.1.2 christos link_info->keep_memory);
7011 1.1.1.3 christos if (internal_relocs == NULL)
7012 1.1.1.2 christos goto error_return;
7013 1.1.1.2 christos }
7014 1.1.1.2 christos
7015 1.1.1.2 christos got2 = bfd_get_section_by_name (abfd, ".got2");
7016 1.1.1.2 christos
7017 1.1.1.2 christos irelend = internal_relocs + isec->reloc_count;
7018 1.1.1.2 christos for (irel = internal_relocs; irel < irelend; irel++)
7019 1.1.1.2 christos {
7020 1.1.1.2 christos unsigned long r_type = ELF32_R_TYPE (irel->r_info);
7021 1.1.1.2 christos bfd_vma toff, roff;
7022 1.1.1.2 christos asection *tsec;
7023 1.1.1.2 christos struct one_branch_fixup *f;
7024 1.1.1.2 christos size_t insn_offset = 0;
7025 1.1 christos bfd_vma max_branch_offset = 0, val;
7026 1.1.1.2 christos bfd_byte *hit_addr;
7027 1.1.1.2 christos unsigned long t0;
7028 1.1.1.2 christos struct elf_link_hash_entry *h;
7029 1.1.1.2 christos struct plt_entry **plist;
7030 1.1.1.2 christos unsigned char sym_type;
7031 1.1 christos
7032 1.1.1.3 christos switch (r_type)
7033 1.1.1.3 christos {
7034 1.1.1.3 christos case R_PPC_REL24:
7035 1.1.1.3 christos case R_PPC_LOCAL24PC:
7036 1.1.1.3 christos case R_PPC_PLTREL24:
7037 1.1.1.2 christos max_branch_offset = 1 << 25;
7038 1.1.1.2 christos break;
7039 1.1 christos
7040 1.1.1.2 christos case R_PPC_REL14:
7041 1.1.1.2 christos case R_PPC_REL14_BRTAKEN:
7042 1.1.1.2 christos case R_PPC_REL14_BRNTAKEN:
7043 1.1.1.2 christos max_branch_offset = 1 << 15;
7044 1.1 christos break;
7045 1.1.1.2 christos
7046 1.1.1.2 christos case R_PPC_ADDR16_HA:
7047 1.1.1.2 christos if (htab->params->pic_fixup > 0)
7048 1.1.1.2 christos break;
7049 1.1.1.2 christos continue;
7050 1.1.1.2 christos
7051 1.1.1.2 christos default:
7052 1.1.1.2 christos continue;
7053 1.1.1.2 christos }
7054 1.1.1.2 christos
7055 1.1.1.2 christos /* Get the value of the symbol referred to by the reloc. */
7056 1.1.1.2 christos h = NULL;
7057 1.1.1.2 christos if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
7058 1.1.1.2 christos {
7059 1.1.1.2 christos /* A local symbol. */
7060 1.1.1.2 christos Elf_Internal_Sym *isym;
7061 1.1.1.2 christos
7062 1.1.1.2 christos /* Read this BFD's local symbols. */
7063 1.1.1.2 christos if (isymbuf == NULL)
7064 1.1.1.2 christos {
7065 1.1.1.2 christos isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
7066 1.1.1.2 christos if (isymbuf == NULL)
7067 1.1.1.2 christos isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
7068 1.1.1.2 christos symtab_hdr->sh_info, 0,
7069 1.1.1.2 christos NULL, NULL, NULL);
7070 1.1.1.2 christos if (isymbuf == 0)
7071 1.1 christos goto error_return;
7072 1.1 christos }
7073 1.1.1.2 christos isym = isymbuf + ELF32_R_SYM (irel->r_info);
7074 1.1.1.2 christos if (isym->st_shndx == SHN_UNDEF)
7075 1.1.1.2 christos tsec = bfd_und_section_ptr;
7076 1.1 christos else if (isym->st_shndx == SHN_ABS)
7077 1.1.1.2 christos tsec = bfd_abs_section_ptr;
7078 1.1.1.2 christos else if (isym->st_shndx == SHN_COMMON)
7079 1.1 christos tsec = bfd_com_section_ptr;
7080 1.1.1.2 christos else
7081 1.1.1.2 christos tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7082 1.1.1.2 christos
7083 1.1 christos toff = isym->st_value;
7084 1.1.1.2 christos sym_type = ELF_ST_TYPE (isym->st_info);
7085 1.1.1.2 christos }
7086 1.1 christos else
7087 1.1.1.2 christos {
7088 1.1.1.2 christos /* Global symbol handling. */
7089 1.1 christos unsigned long indx;
7090 1.1.1.2 christos
7091 1.1.1.2 christos indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
7092 1.1 christos h = elf_sym_hashes (abfd)[indx];
7093 1.1.1.2 christos
7094 1.1.1.4 christos while (h->root.type == bfd_link_hash_indirect
7095 1.1 christos || h->root.type == bfd_link_hash_warning)
7096 1.1.1.2 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
7097 1.1.1.2 christos
7098 1.1 christos if (h->root.type == bfd_link_hash_defined
7099 1.1.1.2 christos || h->root.type == bfd_link_hash_defweak)
7100 1.1.1.2 christos {
7101 1.1.1.2 christos tsec = h->root.u.def.section;
7102 1.1.1.4 christos toff = h->root.u.def.value;
7103 1.1.1.2 christos }
7104 1.1.1.2 christos else if (h->root.type == bfd_link_hash_undefined
7105 1.1.1.2 christos || h->root.type == bfd_link_hash_undefweak)
7106 1.1.1.2 christos {
7107 1.1.1.2 christos tsec = bfd_und_section_ptr;
7108 1.1.1.2 christos toff = bfd_link_relocatable (link_info) ? indx : 0;
7109 1.1.1.2 christos }
7110 1.1.1.2 christos else
7111 1.1.1.2 christos continue;
7112 1.1.1.2 christos
7113 1.1.1.2 christos /* If this branch is to __tls_get_addr then we may later
7114 1.1.1.2 christos optimise away the call. We won't be needing a long-
7115 1.1.1.2 christos branch stub in that case. */
7116 1.1.1.2 christos if (bfd_link_executable (link_info)
7117 1.1 christos && h == htab->tls_get_addr
7118 1.1.1.2 christos && irel != internal_relocs)
7119 1.1.1.2 christos {
7120 1.1.1.2 christos unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
7121 1.1.1.2 christos unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
7122 1.1.1.2 christos unsigned int tls_mask = 0;
7123 1.1.1.2 christos
7124 1.1.1.2 christos /* The previous reloc should be one of R_PPC_TLSGD or
7125 1.1.1.2 christos R_PPC_TLSLD, or for older object files, a reloc
7126 1.1.1.2 christos on the __tls_get_addr arg setup insn. Get tls
7127 1.1.1.2 christos mask bits from the symbol on that reloc. */
7128 1.1.1.2 christos if (t_symndx < symtab_hdr->sh_info)
7129 1.1.1.2 christos {
7130 1.1.1.2 christos bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7131 1.1 christos
7132 1.1.1.2 christos if (local_got_offsets != NULL)
7133 1.1.1.2 christos {
7134 1.1.1.2 christos struct plt_entry **local_plt = (struct plt_entry **)
7135 1.1 christos (local_got_offsets + symtab_hdr->sh_info);
7136 1.1.1.2 christos char *lgot_masks = (char *)
7137 1.1.1.2 christos (local_plt + symtab_hdr->sh_info);
7138 1.1.1.2 christos tls_mask = lgot_masks[t_symndx];
7139 1.1 christos }
7140 1.1.1.2 christos }
7141 1.1.1.2 christos else
7142 1.1.1.2 christos {
7143 1.1.1.2 christos struct elf_link_hash_entry *th
7144 1.1.1.2 christos = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
7145 1.1.1.2 christos
7146 1.1.1.2 christos while (th->root.type == bfd_link_hash_indirect
7147 1.1.1.2 christos || th->root.type == bfd_link_hash_warning)
7148 1.1.1.2 christos th = (struct elf_link_hash_entry *) th->root.u.i.link;
7149 1.1.1.2 christos
7150 1.1.1.2 christos tls_mask
7151 1.1.1.2 christos = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
7152 1.1.1.2 christos }
7153 1.1 christos
7154 1.1.1.2 christos /* The mask bits tell us if the call will be
7155 1.1.1.2 christos optimised away. */
7156 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
7157 1.1.1.3 christos && (t_rtype == R_PPC_TLSGD
7158 1.1.1.3 christos || t_rtype == R_PPC_GOT_TLSGD16
7159 1.1.1.3 christos || t_rtype == R_PPC_GOT_TLSGD16_LO))
7160 1.1.1.3 christos continue;
7161 1.1.1.3 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
7162 1.1.1.3 christos && (t_rtype == R_PPC_TLSLD
7163 1.1.1.3 christos || t_rtype == R_PPC_GOT_TLSLD16
7164 1.1.1.3 christos || t_rtype == R_PPC_GOT_TLSLD16_LO))
7165 1.1.1.3 christos continue;
7166 1.1.1.3 christos }
7167 1.1.1.3 christos
7168 1.1.1.2 christos sym_type = h->type;
7169 1.1.1.2 christos }
7170 1.1.1.2 christos
7171 1.1.1.2 christos if (r_type == R_PPC_ADDR16_HA)
7172 1.1.1.2 christos {
7173 1.1.1.2 christos if (h != NULL
7174 1.1.1.2 christos && !h->def_regular
7175 1.1.1.2 christos && h->protected_def
7176 1.1.1.2 christos && ppc_elf_hash_entry (h)->has_addr16_ha
7177 1.1.1.2 christos && ppc_elf_hash_entry (h)->has_addr16_lo)
7178 1.1.1.2 christos picfixup_size += 12;
7179 1.1.1.2 christos continue;
7180 1.1.1.2 christos }
7181 1.1.1.2 christos
7182 1.1.1.2 christos /* The condition here under which we call find_plt_ent must
7183 1.1.1.2 christos match that in relocate_section. If we call find_plt_ent here
7184 1.1.1.2 christos but not in relocate_section, or vice versa, then the branch
7185 1.1.1.2 christos destination used here may be incorrect. */
7186 1.1.1.2 christos plist = NULL;
7187 1.1.1.2 christos if (h != NULL)
7188 1.1.1.2 christos {
7189 1.1.1.2 christos /* We know is_branch_reloc (r_type) is true. */
7190 1.1.1.2 christos if (h->type == STT_GNU_IFUNC
7191 1.1.1.2 christos || r_type == R_PPC_PLTREL24)
7192 1.1.1.2 christos plist = &h->plt.plist;
7193 1.1.1.4 christos }
7194 1.1.1.2 christos else if (sym_type == STT_GNU_IFUNC
7195 1.1.1.2 christos && elf_local_got_offsets (abfd) != NULL)
7196 1.1.1.2 christos {
7197 1.1.1.2 christos bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7198 1.1.1.2 christos struct plt_entry **local_plt = (struct plt_entry **)
7199 1.1.1.2 christos (local_got_offsets + symtab_hdr->sh_info);
7200 1.1.1.2 christos plist = local_plt + ELF32_R_SYM (irel->r_info);
7201 1.1.1.2 christos }
7202 1.1.1.2 christos if (plist != NULL)
7203 1.1.1.2 christos {
7204 1.1.1.2 christos bfd_vma addend = 0;
7205 1.1.1.2 christos struct plt_entry *ent;
7206 1.1.1.2 christos
7207 1.1.1.2 christos if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
7208 1.1.1.5 christos addend = irel->r_addend;
7209 1.1.1.2 christos ent = find_plt_ent (plist, got2, addend);
7210 1.1.1.2 christos if (ent != NULL)
7211 1.1.1.2 christos {
7212 1.1.1.2 christos if (htab->plt_type == PLT_NEW
7213 1.1.1.2 christos || h == NULL
7214 1.1.1.2 christos || !htab->elf.dynamic_sections_created
7215 1.1.1.2 christos || h->dynindx == -1)
7216 1.1.1.2 christos {
7217 1.1.1.2 christos tsec = htab->glink;
7218 1.1 christos toff = ent->glink_offset;
7219 1.1 christos }
7220 1.1.1.2 christos else
7221 1.1.1.2 christos {
7222 1.1.1.2 christos tsec = htab->elf.splt;
7223 1.1.1.2 christos toff = ent->plt.offset;
7224 1.1.1.2 christos }
7225 1.1.1.2 christos }
7226 1.1.1.2 christos }
7227 1.1.1.2 christos
7228 1.1.1.2 christos /* If the branch and target are in the same section, you have
7229 1.1.1.2 christos no hope of adding stubs. We'll error out later should the
7230 1.1.1.2 christos branch overflow. */
7231 1.1.1.2 christos if (tsec == isec)
7232 1.1.1.2 christos continue;
7233 1.1.1.2 christos
7234 1.1.1.2 christos /* There probably isn't any reason to handle symbols in
7235 1.1.1.2 christos SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7236 1.1.1.2 christos attribute for a code section, and we are only looking at
7237 1.1.1.2 christos branches. However, implement it correctly here as a
7238 1.1.1.2 christos reference for other target relax_section functions. */
7239 1.1.1.2 christos if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7240 1.1.1.2 christos {
7241 1.1.1.2 christos /* At this stage in linking, no SEC_MERGE symbol has been
7242 1.1.1.2 christos adjusted, so all references to such symbols need to be
7243 1.1.1.2 christos passed through _bfd_merged_section_offset. (Later, in
7244 1.1.1.2 christos relocate_section, all SEC_MERGE symbols *except* for
7245 1.1.1.2 christos section symbols have been adjusted.)
7246 1.1.1.2 christos
7247 1.1.1.2 christos gas may reduce relocations against symbols in SEC_MERGE
7248 1.1.1.2 christos sections to a relocation against the section symbol when
7249 1.1.1.2 christos the original addend was zero. When the reloc is against
7250 1.1 christos a section symbol we should include the addend in the
7251 1.1.1.2 christos offset passed to _bfd_merged_section_offset, since the
7252 1.1.1.2 christos location of interest is the original symbol. On the
7253 1.1.1.2 christos other hand, an access to "sym+addend" where "sym" is not
7254 1.1.1.2 christos a section symbol should not include the addend; Such an
7255 1.1.1.2 christos access is presumed to be an offset from "sym"; The
7256 1.1.1.2 christos location of interest is just "sym". */
7257 1.1 christos if (sym_type == STT_SECTION)
7258 1.1.1.2 christos toff += irel->r_addend;
7259 1.1.1.4 christos
7260 1.1.1.2 christos toff
7261 1.1.1.2 christos = _bfd_merged_section_offset (abfd, &tsec,
7262 1.1.1.2 christos elf_section_data (tsec)->sec_info,
7263 1.1.1.2 christos toff);
7264 1.1 christos
7265 1.1 christos if (sym_type != STT_SECTION)
7266 1.1.1.2 christos toff += irel->r_addend;
7267 1.1.1.2 christos }
7268 1.1.1.2 christos /* PLTREL24 addends are special. */
7269 1.1.1.2 christos else if (r_type != R_PPC_PLTREL24)
7270 1.1.1.4 christos toff += irel->r_addend;
7271 1.1.1.2 christos
7272 1.1.1.2 christos /* Attempted -shared link of non-pic code loses. */
7273 1.1.1.2 christos if ((!bfd_link_relocatable (link_info)
7274 1.1.1.2 christos && tsec == bfd_und_section_ptr)
7275 1.1.1.2 christos || tsec->output_section == NULL
7276 1.1.1.2 christos || (tsec->owner != NULL
7277 1.1.1.2 christos && (tsec->owner->flags & BFD_PLUGIN) != 0))
7278 1.1.1.2 christos continue;
7279 1.1.1.2 christos
7280 1.1.1.2 christos roff = irel->r_offset;
7281 1.1.1.2 christos
7282 1.1 christos /* If the branch is in range, no need to do anything. */
7283 1.1.1.2 christos if (tsec != bfd_und_section_ptr
7284 1.1.1.2 christos && (!bfd_link_relocatable (link_info)
7285 1.1.1.3 christos /* A relocatable link may have sections moved during
7286 1.1.1.2 christos final link, so do not presume they remain in range. */
7287 1.1.1.2 christos || tsec->output_section == isec->output_section))
7288 1.1.1.2 christos {
7289 1.1.1.2 christos bfd_vma symaddr, reladdr;
7290 1.1 christos
7291 1.1.1.2 christos symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7292 1.1.1.2 christos reladdr = isec->output_section->vma + isec->output_offset + roff;
7293 1.1 christos if (symaddr - reladdr + max_branch_offset
7294 1.1.1.2 christos < 2 * max_branch_offset)
7295 1.1.1.2 christos continue;
7296 1.1.1.2 christos }
7297 1.1.1.2 christos
7298 1.1.1.2 christos /* Look for an existing fixup to this address. */
7299 1.1 christos for (f = branch_fixups; f ; f = f->next)
7300 1.1.1.4 christos if (f->tsec == tsec && f->toff == toff)
7301 1.1.1.2 christos break;
7302 1.1.1.2 christos
7303 1.1.1.2 christos if (f == NULL)
7304 1.1.1.2 christos {
7305 1.1.1.2 christos size_t size;
7306 1.1.1.2 christos unsigned long stub_rtype;
7307 1.1.1.2 christos
7308 1.1.1.2 christos val = trampoff - roff;
7309 1.1.1.2 christos if (val >= max_branch_offset)
7310 1.1.1.2 christos /* Oh dear, we can't reach a trampoline. Don't try to add
7311 1.1.1.5 christos one. We'll report an error later. */
7312 1.1.1.2 christos continue;
7313 1.1.1.2 christos
7314 1.1.1.2 christos if (bfd_link_pic (link_info))
7315 1.1.1.2 christos {
7316 1.1.1.2 christos size = 4 * ARRAY_SIZE (shared_stub_entry);
7317 1.1.1.2 christos insn_offset = 12;
7318 1.1 christos }
7319 1.1.1.2 christos else
7320 1.1.1.2 christos {
7321 1.1.1.2 christos size = 4 * ARRAY_SIZE (stub_entry);
7322 1.1.1.2 christos insn_offset = 0;
7323 1.1.1.2 christos }
7324 1.1.1.2 christos stub_rtype = R_PPC_RELAX;
7325 1.1.1.2 christos if (tsec == htab->elf.splt
7326 1.1.1.2 christos || tsec == htab->glink)
7327 1.1.1.2 christos {
7328 1.1.1.2 christos stub_rtype = R_PPC_RELAX_PLT;
7329 1.1.1.2 christos if (r_type == R_PPC_PLTREL24)
7330 1.1.1.3 christos stub_rtype = R_PPC_RELAX_PLTREL24;
7331 1.1.1.2 christos }
7332 1.1.1.2 christos
7333 1.1.1.2 christos /* Hijack the old relocation. Since we need two
7334 1.1.1.3 christos relocations for this use a "composite" reloc. */
7335 1.1 christos irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7336 1.1.1.2 christos stub_rtype);
7337 1.1.1.2 christos irel->r_offset = trampoff + insn_offset;
7338 1.1.1.2 christos if (r_type == R_PPC_PLTREL24
7339 1.1 christos && stub_rtype != R_PPC_RELAX_PLTREL24)
7340 1.1 christos irel->r_addend = 0;
7341 1.1.1.2 christos
7342 1.1.1.2 christos /* Record the fixup so we don't do it again this section. */
7343 1.1.1.2 christos f = bfd_malloc (sizeof (*f));
7344 1.1.1.2 christos f->next = branch_fixups;
7345 1.1.1.2 christos f->tsec = tsec;
7346 1.1.1.2 christos f->toff = toff;
7347 1.1.1.2 christos f->trampoff = trampoff;
7348 1.1.1.2 christos branch_fixups = f;
7349 1.1.1.2 christos
7350 1.1.1.2 christos trampoff += size;
7351 1.1.1.2 christos changes++;
7352 1.1.1.2 christos }
7353 1.1.1.2 christos else
7354 1.1.1.2 christos {
7355 1.1 christos val = f->trampoff - roff;
7356 1.1.1.2 christos if (val >= max_branch_offset)
7357 1.1 christos continue;
7358 1.1 christos
7359 1.1 christos /* Nop out the reloc, since we're finalizing things here. */
7360 1.1.1.2 christos irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7361 1.1.1.2 christos }
7362 1.1.1.2 christos
7363 1.1.1.2 christos /* Get the section contents. */
7364 1.1.1.2 christos if (contents == NULL)
7365 1.1.1.2 christos {
7366 1.1.1.2 christos /* Get cached copy if it exists. */
7367 1.1.1.2 christos if (elf_section_data (isec)->this_hdr.contents != NULL)
7368 1.1.1.2 christos contents = elf_section_data (isec)->this_hdr.contents;
7369 1.1.1.2 christos /* Go get them off disk. */
7370 1.1.1.2 christos else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7371 1.1.1.2 christos goto error_return;
7372 1.1 christos }
7373 1.1.1.2 christos
7374 1.1.1.2 christos /* Fix up the existing branch to hit the trampoline. */
7375 1.1.1.2 christos hit_addr = contents + roff;
7376 1.1.1.2 christos switch (r_type)
7377 1.1.1.2 christos {
7378 1.1.1.2 christos case R_PPC_REL24:
7379 1.1.1.2 christos case R_PPC_LOCAL24PC:
7380 1.1.1.2 christos case R_PPC_PLTREL24:
7381 1.1.1.2 christos t0 = bfd_get_32 (abfd, hit_addr);
7382 1.1 christos t0 &= ~0x3fffffc;
7383 1.1 christos t0 |= val & 0x3fffffc;
7384 1.1.1.3 christos bfd_put_32 (abfd, t0, hit_addr);
7385 1.1 christos break;
7386 1.1.1.3 christos
7387 1.1.1.3 christos case R_PPC_REL14:
7388 1.1 christos case R_PPC_REL14_BRTAKEN:
7389 1.1 christos case R_PPC_REL14_BRNTAKEN:
7390 1.1.1.2 christos t0 = bfd_get_32 (abfd, hit_addr);
7391 1.1 christos t0 &= ~0xfffc;
7392 1.1.1.2 christos t0 |= val & 0xfffc;
7393 1.1.1.2 christos bfd_put_32 (abfd, t0, hit_addr);
7394 1.1.1.2 christos break;
7395 1.1.1.4 christos }
7396 1.1.1.2 christos }
7397 1.1.1.2 christos
7398 1.1.1.2 christos while (branch_fixups != NULL)
7399 1.1.1.2 christos {
7400 1.1.1.2 christos struct one_branch_fixup *f = branch_fixups;
7401 1.1.1.2 christos branch_fixups = branch_fixups->next;
7402 1.1.1.2 christos free (f);
7403 1.1.1.2 christos }
7404 1.1.1.2 christos }
7405 1.1.1.2 christos
7406 1.1.1.2 christos workaround_change = FALSE;
7407 1.1.1.2 christos newsize = trampoff;
7408 1.1.1.2 christos if (htab->params->ppc476_workaround
7409 1.1.1.2 christos && (!bfd_link_relocatable (link_info)
7410 1.1.1.2 christos || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7411 1.1.1.2 christos {
7412 1.1.1.2 christos bfd_vma addr, end_addr;
7413 1.1.1.2 christos unsigned int crossings;
7414 1.1.1.2 christos bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7415 1.1.1.2 christos
7416 1.1.1.2 christos addr = isec->output_section->vma + isec->output_offset;
7417 1.1.1.2 christos end_addr = addr + trampoff;
7418 1.1.1.2 christos addr &= -pagesize;
7419 1.1.1.2 christos crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7420 1.1 christos if (crossings != 0)
7421 1.1.1.2 christos {
7422 1.1 christos /* Keep space aligned, to ensure the patch code itself does
7423 1.1 christos not cross a page. Don't decrease size calculated on a
7424 1.1.1.3 christos previous pass as otherwise we might never settle on a layout. */
7425 1.1.1.3 christos newsize = 15 - ((end_addr - 1) & 15);
7426 1.1.1.3 christos newsize += crossings * 16;
7427 1.1.1.3 christos if (relax_info->workaround_size < newsize)
7428 1.1.1.3 christos {
7429 1.1.1.3 christos relax_info->workaround_size = newsize;
7430 1.1.1.3 christos workaround_change = TRUE;
7431 1.1.1.3 christos }
7432 1.1.1.3 christos /* Ensure relocate_section is called. */
7433 1.1.1.2 christos isec->flags |= SEC_RELOC;
7434 1.1.1.2 christos }
7435 1.1 christos newsize = trampoff + relax_info->workaround_size;
7436 1.1 christos }
7437 1.1 christos
7438 1.1 christos if (htab->params->pic_fixup > 0)
7439 1.1 christos {
7440 1.1 christos picfixup_size -= relax_info->picfixup_size;
7441 1.1 christos if (picfixup_size != 0)
7442 1.1 christos relax_info->picfixup_size += picfixup_size;
7443 1.1 christos newsize += relax_info->picfixup_size;
7444 1.1 christos }
7445 1.1 christos
7446 1.1 christos if (changes != 0 || picfixup_size != 0 || workaround_change)
7447 1.1 christos isec->size = newsize;
7448 1.1 christos
7449 1.1 christos if (isymbuf != NULL
7450 1.1 christos && symtab_hdr->contents != (unsigned char *) isymbuf)
7451 1.1 christos {
7452 1.1 christos if (! link_info->keep_memory)
7453 1.1 christos free (isymbuf);
7454 1.1 christos else
7455 1.1 christos {
7456 1.1 christos /* Cache the symbols for elf_link_input_bfd. */
7457 1.1 christos symtab_hdr->contents = (unsigned char *) isymbuf;
7458 1.1 christos }
7459 1.1.1.3 christos }
7460 1.1 christos
7461 1.1 christos if (contents != NULL
7462 1.1 christos && elf_section_data (isec)->this_hdr.contents != contents)
7463 1.1 christos {
7464 1.1 christos if (!changes && !link_info->keep_memory)
7465 1.1 christos free (contents);
7466 1.1 christos else
7467 1.1 christos {
7468 1.1 christos /* Cache the section contents for elf_link_input_bfd. */
7469 1.1 christos elf_section_data (isec)->this_hdr.contents = contents;
7470 1.1 christos }
7471 1.1 christos }
7472 1.1 christos
7473 1.1 christos changes += picfixup_size;
7474 1.1 christos if (changes != 0)
7475 1.1 christos {
7476 1.1 christos /* Append sufficient NOP relocs so we can write out relocation
7477 1.1 christos information for the trampolines. */
7478 1.1 christos Elf_Internal_Shdr *rel_hdr;
7479 1.1 christos Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7480 1.1 christos * sizeof (*new_relocs));
7481 1.1 christos unsigned ix;
7482 1.1 christos
7483 1.1 christos if (!new_relocs)
7484 1.1 christos goto error_return;
7485 1.1 christos memcpy (new_relocs, internal_relocs,
7486 1.1.1.2 christos isec->reloc_count * sizeof (*new_relocs));
7487 1.1.1.2 christos for (ix = changes; ix--;)
7488 1.1 christos {
7489 1.1 christos irel = new_relocs + ix + isec->reloc_count;
7490 1.1.1.2 christos
7491 1.1 christos irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7492 1.1 christos }
7493 1.1 christos if (internal_relocs != elf_section_data (isec)->relocs)
7494 1.1.1.3 christos free (internal_relocs);
7495 1.1.1.2 christos elf_section_data (isec)->relocs = new_relocs;
7496 1.1.1.3 christos isec->reloc_count += changes;
7497 1.1.1.3 christos rel_hdr = _bfd_elf_single_rel_hdr (isec);
7498 1.1.1.2 christos rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7499 1.1.1.2 christos }
7500 1.1 christos else if (internal_relocs != NULL
7501 1.1 christos && elf_section_data (isec)->relocs != internal_relocs)
7502 1.1 christos free (internal_relocs);
7503 1.1 christos
7504 1.1 christos *again = changes != 0 || workaround_change;
7505 1.1 christos return TRUE;
7506 1.1 christos
7507 1.1 christos error_return:
7508 1.1 christos while (branch_fixups != NULL)
7509 1.1 christos {
7510 1.1 christos struct one_branch_fixup *f = branch_fixups;
7511 1.1 christos branch_fixups = branch_fixups->next;
7512 1.1 christos free (f);
7513 1.1 christos }
7514 1.1 christos if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7515 1.1 christos free (isymbuf);
7516 1.1 christos if (contents != NULL
7517 1.1 christos && elf_section_data (isec)->this_hdr.contents != contents)
7518 1.1 christos free (contents);
7519 1.1 christos if (internal_relocs != NULL
7520 1.1 christos && elf_section_data (isec)->relocs != internal_relocs)
7521 1.1 christos free (internal_relocs);
7522 1.1 christos return FALSE;
7523 1.1 christos }
7524 1.1 christos
7525 1.1 christos /* What to do when ld finds relocations against symbols defined in
7527 1.1 christos discarded sections. */
7528 1.1 christos
7529 1.1 christos static unsigned int
7530 1.1 christos ppc_elf_action_discarded (asection *sec)
7531 1.1 christos {
7532 1.1 christos if (strcmp (".fixup", sec->name) == 0)
7533 1.1 christos return 0;
7534 1.1 christos
7535 1.1 christos if (strcmp (".got2", sec->name) == 0)
7536 1.1 christos return 0;
7537 1.1 christos
7538 1.1 christos return _bfd_elf_default_action_discarded (sec);
7539 1.1 christos }
7540 1.1 christos
7541 1.1 christos /* Fill in the address for a pointer generated in a linker section. */
7543 1.1 christos
7544 1.1 christos static bfd_vma
7545 1.1 christos elf_finish_pointer_linker_section (bfd *input_bfd,
7546 1.1 christos elf_linker_section_t *lsect,
7547 1.1 christos struct elf_link_hash_entry *h,
7548 1.1 christos bfd_vma relocation,
7549 1.1 christos const Elf_Internal_Rela *rel)
7550 1.1 christos {
7551 1.1 christos elf_linker_section_pointers_t *linker_section_ptr;
7552 1.1 christos
7553 1.1 christos BFD_ASSERT (lsect != NULL);
7554 1.1 christos
7555 1.1 christos if (h != NULL)
7556 1.1 christos {
7557 1.1 christos /* Handle global symbol. */
7558 1.1 christos struct ppc_elf_link_hash_entry *eh;
7559 1.1 christos
7560 1.1 christos eh = (struct ppc_elf_link_hash_entry *) h;
7561 1.1 christos BFD_ASSERT (eh->elf.def_regular);
7562 1.1 christos linker_section_ptr = eh->linker_section_pointer;
7563 1.1 christos }
7564 1.1 christos else
7565 1.1 christos {
7566 1.1 christos /* Handle local symbol. */
7567 1.1 christos unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7568 1.1 christos
7569 1.1 christos BFD_ASSERT (is_ppc_elf (input_bfd));
7570 1.1 christos BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7571 1.1 christos linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7572 1.1 christos }
7573 1.1 christos
7574 1.1 christos linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7575 1.1 christos rel->r_addend,
7576 1.1 christos lsect);
7577 1.1 christos BFD_ASSERT (linker_section_ptr != NULL);
7578 1.1 christos
7579 1.1 christos /* Offset will always be a multiple of four, so use the bottom bit
7580 1.1 christos as a "written" flag. */
7581 1.1 christos if ((linker_section_ptr->offset & 1) == 0)
7582 1.1 christos {
7583 1.1 christos bfd_put_32 (lsect->section->owner,
7584 1.1 christos relocation + linker_section_ptr->addend,
7585 1.1 christos lsect->section->contents + linker_section_ptr->offset);
7586 1.1 christos linker_section_ptr->offset += 1;
7587 1.1 christos }
7588 1.1 christos
7589 1.1 christos relocation = (lsect->section->output_section->vma
7590 1.1 christos + lsect->section->output_offset
7591 1.1 christos + linker_section_ptr->offset - 1
7592 1.1 christos - SYM_VAL (lsect->sym));
7593 1.1 christos
7594 1.1 christos #ifdef DEBUG
7595 1.1 christos fprintf (stderr,
7596 1.1 christos "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7597 1.1 christos lsect->name, (long) relocation, (long) relocation);
7598 1.1 christos #endif
7599 1.1 christos
7600 1.1 christos return relocation;
7601 1.1 christos }
7602 1.1 christos
7603 1.1.1.4 christos #define PPC_LO(v) ((v) & 0xffff)
7604 1.1 christos #define PPC_HI(v) (((v) >> 16) & 0xffff)
7605 1.1 christos #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7606 1.1 christos
7607 1.1 christos static void
7608 1.1 christos write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
7609 1.1 christos struct bfd_link_info *info)
7610 1.1 christos {
7611 1.1 christos struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7612 1.1 christos bfd *output_bfd = info->output_bfd;
7613 1.1 christos bfd_vma plt;
7614 1.1 christos
7615 1.1 christos plt = ((ent->plt.offset & ~1)
7616 1.1 christos + plt_sec->output_section->vma
7617 1.1 christos + plt_sec->output_offset);
7618 1.1 christos
7619 1.1 christos if (bfd_link_pic (info))
7620 1.1 christos {
7621 1.1 christos bfd_vma got = 0;
7622 1.1 christos
7623 1.1 christos if (ent->addend >= 32768)
7624 1.1.1.2 christos got = (ent->addend
7625 1.1 christos + ent->sec->output_section->vma
7626 1.1 christos + ent->sec->output_offset);
7627 1.1 christos else if (htab->elf.hgot != NULL)
7628 1.1 christos got = SYM_VAL (htab->elf.hgot);
7629 1.1 christos
7630 1.1 christos plt -= got;
7631 1.1 christos
7632 1.1 christos if (plt + 0x8000 < 0x10000)
7633 1.1 christos {
7634 1.1 christos bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7635 1.1 christos p += 4;
7636 1.1 christos bfd_put_32 (output_bfd, MTCTR_11, p);
7637 1.1 christos p += 4;
7638 1.1 christos bfd_put_32 (output_bfd, BCTR, p);
7639 1.1 christos p += 4;
7640 1.1 christos bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
7641 1.1 christos p += 4;
7642 1.1 christos }
7643 1.1 christos else
7644 1.1 christos {
7645 1.1 christos bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7646 1.1 christos p += 4;
7647 1.1 christos bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7648 1.1 christos p += 4;
7649 1.1 christos bfd_put_32 (output_bfd, MTCTR_11, p);
7650 1.1 christos p += 4;
7651 1.1 christos bfd_put_32 (output_bfd, BCTR, p);
7652 1.1 christos p += 4;
7653 1.1 christos }
7654 1.1 christos }
7655 1.1 christos else
7656 1.1 christos {
7657 1.1 christos bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7658 1.1 christos p += 4;
7659 1.1 christos bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7660 1.1 christos p += 4;
7661 1.1 christos bfd_put_32 (output_bfd, MTCTR_11, p);
7662 1.1 christos p += 4;
7663 1.1 christos bfd_put_32 (output_bfd, BCTR, p);
7664 1.1 christos p += 4;
7665 1.1 christos }
7666 1.1 christos }
7667 1.1 christos
7668 1.1 christos /* Return true if symbol is defined statically. */
7669 1.1 christos
7670 1.1 christos static bfd_boolean
7671 1.1 christos is_static_defined (struct elf_link_hash_entry *h)
7672 1.1 christos {
7673 1.1 christos return ((h->root.type == bfd_link_hash_defined
7674 1.1 christos || h->root.type == bfd_link_hash_defweak)
7675 1.1 christos && h->root.u.def.section != NULL
7676 1.1 christos && h->root.u.def.section->output_section != NULL);
7677 1.1 christos }
7678 1.1 christos
7679 1.1 christos /* If INSN is an opcode that may be used with an @tls operand, return
7680 1.1 christos the transformed insn for TLS optimisation, otherwise return 0. If
7681 1.1 christos REG is non-zero only match an insn with RB or RA equal to REG. */
7682 1.1 christos
7683 1.1 christos unsigned int
7684 1.1 christos _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7685 1.1 christos {
7686 1.1 christos unsigned int rtra;
7687 1.1 christos
7688 1.1 christos if ((insn & (0x3f << 26)) != 31 << 26)
7689 1.1 christos return 0;
7690 1.1 christos
7691 1.1 christos if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7692 1.1 christos rtra = insn & ((1 << 26) - (1 << 16));
7693 1.1 christos else if (((insn >> 16) & 0x1f) == reg)
7694 1.1 christos rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7695 1.1 christos else
7696 1.1 christos return 0;
7697 1.1 christos
7698 1.1 christos if ((insn & (0x3ff << 1)) == 266 << 1)
7699 1.1 christos /* add -> addi. */
7700 1.1 christos insn = 14 << 26;
7701 1.1 christos else if ((insn & (0x1f << 1)) == 23 << 1
7702 1.1 christos && ((insn & (0x1f << 6)) < 14 << 6
7703 1.1 christos || ((insn & (0x1f << 6)) >= 16 << 6
7704 1.1 christos && (insn & (0x1f << 6)) < 24 << 6)))
7705 1.1 christos /* load and store indexed -> dform. */
7706 1.1 christos insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7707 1.1 christos else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7708 1.1 christos /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7709 1.1 christos insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7710 1.1 christos else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7711 1.1 christos /* lwax -> lwa. */
7712 1.1 christos insn = (58 << 26) | 2;
7713 1.1 christos else
7714 1.1 christos return 0;
7715 1.1 christos insn |= rtra;
7716 1.1 christos return insn;
7717 1.1 christos }
7718 1.1 christos
7719 1.1 christos /* If INSN is an opcode that may be used with an @tprel operand, return
7720 1.1 christos the transformed insn for an undefined weak symbol, ie. with the
7721 1.1 christos thread pointer REG operand removed. Otherwise return 0. */
7722 1.1 christos
7723 1.1 christos unsigned int
7724 1.1 christos _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7725 1.1 christos {
7726 1.1 christos if ((insn & (0x1f << 16)) == reg << 16
7727 1.1 christos && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7728 1.1 christos || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7729 1.1 christos || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7730 1.1 christos || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7731 1.1 christos || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7732 1.1 christos || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7733 1.1 christos || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7734 1.1 christos || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7735 1.1 christos || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7736 1.1 christos || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7737 1.1 christos || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7738 1.1 christos || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7739 1.1 christos || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7740 1.1 christos || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7741 1.1 christos || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7742 1.1 christos || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7743 1.1 christos && (insn & 3) != 1)
7744 1.1 christos || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7745 1.1 christos && ((insn & 3) == 0 || (insn & 3) == 3))))
7746 1.1 christos {
7747 1.1 christos insn &= ~(0x1f << 16);
7748 1.1 christos }
7749 1.1 christos else if ((insn & (0x1f << 21)) == reg << 21
7750 1.1 christos && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7751 1.1 christos || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7752 1.1 christos || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7753 1.1 christos {
7754 1.1 christos insn &= ~(0x1f << 21);
7755 1.1 christos insn |= (insn & (0x1f << 16)) << 5;
7756 1.1 christos if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7757 1.1 christos insn -= 2 >> 26; /* convert to ori,oris */
7758 1.1 christos }
7759 1.1 christos else
7760 1.1.1.4 christos insn = 0;
7761 1.1.1.4 christos return insn;
7762 1.1.1.4 christos }
7763 1.1 christos
7764 1.1 christos static bfd_boolean
7765 1.1 christos is_insn_ds_form (unsigned int insn)
7766 1.1 christos {
7767 1.1 christos return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7768 1.1 christos || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7769 1.1 christos || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7770 1.1 christos || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7771 1.1 christos }
7772 1.1 christos
7773 1.1 christos static bfd_boolean
7774 1.1 christos is_insn_dq_form (unsigned int insn)
7775 1.1 christos {
7776 1.1 christos return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
7777 1.1 christos || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7778 1.1 christos && (insn & 3) == 1));
7779 1.1 christos }
7780 1.1 christos
7781 1.1 christos /* The RELOCATE_SECTION function is called by the ELF backend linker
7782 1.1 christos to handle the relocations for a section.
7783 1.1 christos
7784 1.1 christos The relocs are always passed as Rela structures; if the section
7785 1.1 christos actually uses Rel structures, the r_addend field will always be
7786 1.1 christos zero.
7787 1.1 christos
7788 1.1 christos This function is responsible for adjust the section contents as
7789 1.1 christos necessary, and (if using Rela relocs and generating a
7790 1.1 christos relocatable output file) adjusting the reloc addend as
7791 1.1 christos necessary.
7792 1.1 christos
7793 1.1 christos This function does not have to worry about setting the reloc
7794 1.1 christos address or the reloc symbol index.
7795 1.1 christos
7796 1.1 christos LOCAL_SYMS is a pointer to the swapped in local symbols.
7797 1.1 christos
7798 1.1 christos LOCAL_SECTIONS is an array giving the section in the input file
7799 1.1 christos corresponding to the st_shndx field of each local symbol.
7800 1.1 christos
7801 1.1 christos The global hash table entry for the global symbols can be found
7802 1.1 christos via elf_sym_hashes (input_bfd).
7803 1.1 christos
7804 1.1 christos When generating relocatable output, this function must handle
7805 1.1 christos STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7806 1.1 christos going to be the section symbol corresponding to the output
7807 1.1 christos section, which means that the addend must be adjusted
7808 1.1.1.4 christos accordingly. */
7809 1.1 christos
7810 1.1 christos static bfd_boolean
7811 1.1 christos ppc_elf_relocate_section (bfd *output_bfd,
7812 1.1 christos struct bfd_link_info *info,
7813 1.1 christos bfd *input_bfd,
7814 1.1.1.5 christos asection *input_section,
7815 1.1 christos bfd_byte *contents,
7816 1.1.1.3 christos Elf_Internal_Rela *relocs,
7817 1.1.1.3 christos Elf_Internal_Sym *local_syms,
7818 1.1 christos asection **local_sections)
7819 1.1 christos {
7820 1.1 christos Elf_Internal_Shdr *symtab_hdr;
7821 1.1 christos struct elf_link_hash_entry **sym_hashes;
7822 1.1 christos struct ppc_elf_link_hash_table *htab;
7823 1.1 christos Elf_Internal_Rela *rel;
7824 1.1.1.4 christos Elf_Internal_Rela *wrel;
7825 1.1 christos Elf_Internal_Rela *relend;
7826 1.1 christos Elf_Internal_Rela outrel;
7827 1.1 christos asection *got2;
7828 1.1 christos bfd_vma *local_got_offsets;
7829 1.1 christos bfd_boolean ret = TRUE;
7830 1.1 christos bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
7831 1.1 christos bfd_boolean is_vxworks_tls;
7832 1.1 christos unsigned int picfixup_size = 0;
7833 1.1 christos struct ppc_elf_relax_info *relax_info = NULL;
7834 1.1 christos
7835 1.1 christos #ifdef DEBUG
7836 1.1 christos _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7837 1.1 christos "%ld relocations%s",
7838 1.1 christos input_bfd, input_section,
7839 1.1.1.4 christos (long) input_section->reloc_count,
7840 1.1 christos (bfd_link_relocatable (info)) ? " (relocatable)" : "");
7841 1.1 christos #endif
7842 1.1.1.3 christos
7843 1.1.1.3 christos got2 = bfd_get_section_by_name (input_bfd, ".got2");
7844 1.1.1.4 christos
7845 1.1 christos /* Initialize howto table if not already done. */
7846 1.1.1.4 christos if (!ppc_elf_howto_table[R_PPC_ADDR32])
7847 1.1 christos ppc_elf_howto_init ();
7848 1.1 christos
7849 1.1 christos htab = ppc_elf_hash_table (info);
7850 1.1 christos local_got_offsets = elf_local_got_offsets (input_bfd);
7851 1.1 christos symtab_hdr = &elf_symtab_hdr (input_bfd);
7852 1.1 christos sym_hashes = elf_sym_hashes (input_bfd);
7853 1.1 christos /* We have to handle relocations in vxworks .tls_vars sections
7854 1.1 christos specially, because the dynamic loader is 'weird'. */
7855 1.1 christos is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
7856 1.1 christos && !strcmp (input_section->output_section->name,
7857 1.1 christos ".tls_vars"));
7858 1.1 christos if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7859 1.1 christos relax_info = elf_section_data (input_section)->sec_info;
7860 1.1 christos rel = wrel = relocs;
7861 1.1 christos relend = relocs + input_section->reloc_count;
7862 1.1 christos for (; rel < relend; wrel++, rel++)
7863 1.1.1.2 christos {
7864 1.1 christos enum elf_ppc_reloc_type r_type;
7865 1.1.1.4 christos bfd_vma addend;
7866 1.1 christos bfd_reloc_status_type r;
7867 1.1 christos Elf_Internal_Sym *sym;
7868 1.1 christos asection *sec;
7869 1.1 christos struct elf_link_hash_entry *h;
7870 1.1 christos const char *sym_name;
7871 1.1 christos reloc_howto_type *howto;
7872 1.1 christos unsigned long r_symndx;
7873 1.1 christos bfd_vma relocation;
7874 1.1 christos bfd_vma branch_bit, from;
7875 1.1 christos bfd_boolean unresolved_reloc;
7876 1.1 christos bfd_boolean warned;
7877 1.1 christos unsigned int tls_type, tls_mask, tls_gd;
7878 1.1 christos struct plt_entry **ifunc;
7879 1.1 christos struct reloc_howto_struct alt_howto;
7880 1.1 christos
7881 1.1 christos again:
7882 1.1 christos r_type = ELF32_R_TYPE (rel->r_info);
7883 1.1 christos sym = NULL;
7884 1.1 christos sec = NULL;
7885 1.1 christos h = NULL;
7886 1.1 christos unresolved_reloc = FALSE;
7887 1.1 christos warned = FALSE;
7888 1.1 christos r_symndx = ELF32_R_SYM (rel->r_info);
7889 1.1 christos
7890 1.1 christos if (r_symndx < symtab_hdr->sh_info)
7891 1.1 christos {
7892 1.1 christos sym = local_syms + r_symndx;
7893 1.1 christos sec = local_sections[r_symndx];
7894 1.1 christos sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7895 1.1 christos
7896 1.1 christos relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7897 1.1 christos }
7898 1.1 christos else
7899 1.1 christos {
7900 1.1 christos bfd_boolean ignored;
7901 1.1 christos
7902 1.1.1.4 christos RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7903 1.1.1.4 christos r_symndx, symtab_hdr, sym_hashes,
7904 1.1.1.4 christos h, sec, relocation,
7905 1.1.1.4 christos unresolved_reloc, warned, ignored);
7906 1.1.1.4 christos
7907 1.1.1.4 christos sym_name = h->root.root.string;
7908 1.1.1.4 christos }
7909 1.1.1.4 christos
7910 1.1.1.4 christos if (sec != NULL && discarded_section (sec))
7911 1.1.1.4 christos {
7912 1.1.1.4 christos /* For relocs against symbols from removed linkonce sections,
7913 1.1.1.4 christos or sections discarded by a linker script, we just want the
7914 1.1.1.4 christos section contents zeroed. Avoid any special processing. */
7915 1.1.1.4 christos howto = NULL;
7916 1.1.1.4 christos if (r_type < R_PPC_max)
7917 1.1.1.4 christos howto = ppc_elf_howto_table[r_type];
7918 1.1 christos
7919 1.1 christos _bfd_clear_contents (howto, input_bfd, input_section,
7920 1.1.1.4 christos contents + rel->r_offset);
7921 1.1 christos wrel->r_offset = rel->r_offset;
7922 1.1 christos wrel->r_info = 0;
7923 1.1 christos wrel->r_addend = 0;
7924 1.1 christos
7925 1.1 christos /* For ld -r, remove relocations in debug sections against
7926 1.1 christos sections defined in discarded sections. Not done for
7927 1.1 christos non-debug to preserve relocs in .eh_frame which the
7928 1.1 christos eh_frame editing code expects to be present. */
7929 1.1 christos if (bfd_link_relocatable (info)
7930 1.1.1.2 christos && (input_section->flags & SEC_DEBUGGING))
7931 1.1.1.2 christos wrel--;
7932 1.1.1.2 christos
7933 1.1.1.4 christos continue;
7934 1.1 christos }
7935 1.1 christos
7936 1.1 christos if (bfd_link_relocatable (info))
7937 1.1 christos {
7938 1.1 christos if (got2 != NULL
7939 1.1 christos && r_type == R_PPC_PLTREL24
7940 1.1 christos && rel->r_addend != 0)
7941 1.1 christos {
7942 1.1 christos /* R_PPC_PLTREL24 is rather special. If non-zero, the
7943 1.1 christos addend specifies the GOT pointer offset within .got2. */
7944 1.1 christos rel->r_addend += got2->output_offset;
7945 1.1 christos }
7946 1.1 christos if (r_type != R_PPC_RELAX_PLT
7947 1.1 christos && r_type != R_PPC_RELAX_PLTREL24
7948 1.1 christos && r_type != R_PPC_RELAX)
7949 1.1 christos goto copy_reloc;
7950 1.1 christos }
7951 1.1 christos
7952 1.1 christos /* TLS optimizations. Replace instruction sequences and relocs
7953 1.1 christos based on information we collected in tls_optimize. We edit
7954 1.1 christos RELOCS so that --emit-relocs will output something sensible
7955 1.1 christos for the final instruction stream. */
7956 1.1 christos tls_mask = 0;
7957 1.1 christos tls_gd = 0;
7958 1.1 christos if (h != NULL)
7959 1.1 christos tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7960 1.1 christos else if (local_got_offsets != NULL)
7961 1.1 christos {
7962 1.1 christos struct plt_entry **local_plt;
7963 1.1 christos char *lgot_masks;
7964 1.1 christos local_plt
7965 1.1 christos = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7966 1.1 christos lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7967 1.1 christos tls_mask = lgot_masks[r_symndx];
7968 1.1 christos }
7969 1.1 christos
7970 1.1 christos /* Ensure reloc mapping code below stays sane. */
7971 1.1 christos if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7972 1.1 christos || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7973 1.1 christos || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7974 1.1 christos || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7975 1.1 christos || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7976 1.1.1.5 christos || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7977 1.1.1.4 christos || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7978 1.1 christos || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7979 1.1 christos abort ();
7980 1.1.1.5 christos switch (r_type)
7981 1.1.1.4 christos {
7982 1.1 christos default:
7983 1.1 christos break;
7984 1.1 christos
7985 1.1 christos case R_PPC_GOT_TPREL16:
7986 1.1 christos case R_PPC_GOT_TPREL16_LO:
7987 1.1 christos if ((tls_mask & TLS_TLS) != 0
7988 1.1 christos && (tls_mask & TLS_TPREL) == 0)
7989 1.1 christos {
7990 1.1 christos bfd_vma insn;
7991 1.1 christos
7992 1.1 christos insn = bfd_get_32 (input_bfd,
7993 1.1.1.5 christos contents + rel->r_offset - d_offset);
7994 1.1 christos insn &= 31 << 21;
7995 1.1 christos insn |= 0x3c020000; /* addis 0,2,0 */
7996 1.1 christos bfd_put_32 (input_bfd, insn,
7997 1.1.1.5 christos contents + rel->r_offset - d_offset);
7998 1.1 christos r_type = R_PPC_TPREL16_HA;
7999 1.1 christos rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8000 1.1 christos }
8001 1.1 christos break;
8002 1.1 christos
8003 1.1 christos case R_PPC_TLS:
8004 1.1 christos if ((tls_mask & TLS_TLS) != 0
8005 1.1 christos && (tls_mask & TLS_TPREL) == 0)
8006 1.1 christos {
8007 1.1 christos bfd_vma insn;
8008 1.1 christos
8009 1.1 christos insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
8010 1.1 christos insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
8011 1.1 christos if (insn == 0)
8012 1.1 christos abort ();
8013 1.1 christos bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
8014 1.1 christos r_type = R_PPC_TPREL16_LO;
8015 1.1 christos rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8016 1.1 christos
8017 1.1 christos /* Was PPC_TLS which sits on insn boundary, now
8018 1.1 christos PPC_TPREL16_LO which is at low-order half-word. */
8019 1.1 christos rel->r_offset += d_offset;
8020 1.1 christos }
8021 1.1 christos break;
8022 1.1 christos
8023 1.1 christos case R_PPC_GOT_TLSGD16_HI:
8024 1.1 christos case R_PPC_GOT_TLSGD16_HA:
8025 1.1.1.5 christos tls_gd = TLS_TPRELGD;
8026 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8027 1.1 christos goto tls_gdld_hi;
8028 1.1 christos break;
8029 1.1 christos
8030 1.1 christos case R_PPC_GOT_TLSLD16_HI:
8031 1.1 christos case R_PPC_GOT_TLSLD16_HA:
8032 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8033 1.1 christos {
8034 1.1 christos tls_gdld_hi:
8035 1.1 christos if ((tls_mask & tls_gd) != 0)
8036 1.1 christos r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
8037 1.1 christos + R_PPC_GOT_TPREL16);
8038 1.1 christos else
8039 1.1 christos {
8040 1.1 christos rel->r_offset -= d_offset;
8041 1.1 christos bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
8042 1.1 christos r_type = R_PPC_NONE;
8043 1.1 christos }
8044 1.1 christos rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8045 1.1 christos }
8046 1.1 christos break;
8047 1.1 christos
8048 1.1 christos case R_PPC_GOT_TLSGD16:
8049 1.1 christos case R_PPC_GOT_TLSGD16_LO:
8050 1.1 christos tls_gd = TLS_TPRELGD;
8051 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8052 1.1 christos goto tls_ldgd_opt;
8053 1.1 christos break;
8054 1.1 christos
8055 1.1 christos case R_PPC_GOT_TLSLD16:
8056 1.1 christos case R_PPC_GOT_TLSLD16_LO:
8057 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8058 1.1.1.3 christos {
8059 1.1.1.3 christos unsigned int insn1, insn2;
8060 1.1.1.3 christos bfd_vma offset;
8061 1.1.1.3 christos
8062 1.1.1.5 christos tls_ldgd_opt:
8063 1.1.1.3 christos offset = (bfd_vma) -1;
8064 1.1 christos /* If not using the newer R_PPC_TLSGD/LD to mark
8065 1.1 christos __tls_get_addr calls, we must trust that the call
8066 1.1 christos stays with its arg setup insns, ie. that the next
8067 1.1.1.3 christos reloc is the __tls_get_addr call associated with
8068 1.1 christos the current reloc. Edit both insns. */
8069 1.1 christos if (input_section->has_tls_get_addr_call
8070 1.1 christos && rel + 1 < relend
8071 1.1 christos && branch_reloc_hash_match (input_bfd, rel + 1,
8072 1.1 christos htab->tls_get_addr))
8073 1.1.1.5 christos offset = rel[1].r_offset;
8074 1.1 christos /* We read the low GOT_TLS insn because we need to keep
8075 1.1 christos the destination reg. It may be something other than
8076 1.1 christos the usual r3, and moved to r3 before the call by
8077 1.1 christos intervening code. */
8078 1.1 christos insn1 = bfd_get_32 (input_bfd,
8079 1.1 christos contents + rel->r_offset - d_offset);
8080 1.1 christos if ((tls_mask & tls_gd) != 0)
8081 1.1 christos {
8082 1.1.1.3 christos /* IE */
8083 1.1.1.3 christos insn1 &= (0x1f << 21) | (0x1f << 16);
8084 1.1 christos insn1 |= 32 << 26; /* lwz */
8085 1.1 christos if (offset != (bfd_vma) -1)
8086 1.1 christos {
8087 1.1 christos rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8088 1.1 christos insn2 = 0x7c631214; /* add 3,3,2 */
8089 1.1 christos bfd_put_32 (input_bfd, insn2, contents + offset);
8090 1.1 christos }
8091 1.1 christos r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
8092 1.1 christos + R_PPC_GOT_TPREL16);
8093 1.1 christos rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8094 1.1 christos }
8095 1.1 christos else
8096 1.1 christos {
8097 1.1 christos /* LE */
8098 1.1 christos insn1 &= 0x1f << 21;
8099 1.1 christos insn1 |= 0x3c020000; /* addis r,2,0 */
8100 1.1 christos if (tls_gd == 0)
8101 1.1 christos {
8102 1.1 christos /* Was an LD reloc. */
8103 1.1 christos for (r_symndx = 0;
8104 1.1 christos r_symndx < symtab_hdr->sh_info;
8105 1.1 christos r_symndx++)
8106 1.1 christos if (local_sections[r_symndx] == sec)
8107 1.1 christos break;
8108 1.1.1.5 christos if (r_symndx >= symtab_hdr->sh_info)
8109 1.1 christos r_symndx = STN_UNDEF;
8110 1.1 christos rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8111 1.1.1.5 christos if (r_symndx != STN_UNDEF)
8112 1.1 christos rel->r_addend -= (local_syms[r_symndx].st_value
8113 1.1 christos + sec->output_offset
8114 1.1 christos + sec->output_section->vma);
8115 1.1 christos }
8116 1.1 christos r_type = R_PPC_TPREL16_HA;
8117 1.1.1.4 christos rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8118 1.1 christos if (offset != (bfd_vma) -1)
8119 1.1 christos {
8120 1.1 christos rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8121 1.1 christos rel[1].r_offset = offset + d_offset;
8122 1.1 christos rel[1].r_addend = rel->r_addend;
8123 1.1 christos insn2 = 0x38630000; /* addi 3,3,0 */
8124 1.1 christos bfd_put_32 (input_bfd, insn2, contents + offset);
8125 1.1 christos }
8126 1.1 christos }
8127 1.1 christos bfd_put_32 (input_bfd, insn1,
8128 1.1 christos contents + rel->r_offset - d_offset);
8129 1.1 christos if (tls_gd == 0)
8130 1.1 christos {
8131 1.1 christos /* We changed the symbol on an LD reloc. Start over
8132 1.1 christos in order to get h, sym, sec etc. right. */
8133 1.1 christos goto again;
8134 1.1 christos }
8135 1.1 christos }
8136 1.1 christos break;
8137 1.1 christos
8138 1.1 christos case R_PPC_TLSGD:
8139 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8140 1.1 christos {
8141 1.1 christos unsigned int insn2;
8142 1.1.1.5 christos bfd_vma offset = rel->r_offset;
8143 1.1 christos
8144 1.1 christos if ((tls_mask & TLS_TPRELGD) != 0)
8145 1.1 christos {
8146 1.1 christos /* IE */
8147 1.1 christos r_type = R_PPC_NONE;
8148 1.1 christos insn2 = 0x7c631214; /* add 3,3,2 */
8149 1.1 christos }
8150 1.1 christos else
8151 1.1 christos {
8152 1.1 christos /* LE */
8153 1.1 christos r_type = R_PPC_TPREL16_LO;
8154 1.1 christos rel->r_offset += d_offset;
8155 1.1 christos insn2 = 0x38630000; /* addi 3,3,0 */
8156 1.1 christos }
8157 1.1 christos rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8158 1.1 christos bfd_put_32 (input_bfd, insn2, contents + offset);
8159 1.1 christos /* Zap the reloc on the _tls_get_addr call too. */
8160 1.1 christos BFD_ASSERT (offset == rel[1].r_offset);
8161 1.1 christos rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8162 1.1 christos }
8163 1.1 christos break;
8164 1.1 christos
8165 1.1 christos case R_PPC_TLSLD:
8166 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8167 1.1 christos {
8168 1.1 christos unsigned int insn2;
8169 1.1 christos
8170 1.1.1.5 christos for (r_symndx = 0;
8171 1.1 christos r_symndx < symtab_hdr->sh_info;
8172 1.1 christos r_symndx++)
8173 1.1 christos if (local_sections[r_symndx] == sec)
8174 1.1 christos break;
8175 1.1.1.4 christos if (r_symndx >= symtab_hdr->sh_info)
8176 1.1 christos r_symndx = STN_UNDEF;
8177 1.1 christos rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8178 1.1 christos if (r_symndx != STN_UNDEF)
8179 1.1 christos rel->r_addend -= (local_syms[r_symndx].st_value
8180 1.1 christos + sec->output_offset
8181 1.1 christos + sec->output_section->vma);
8182 1.1 christos
8183 1.1 christos rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8184 1.1 christos rel->r_offset += d_offset;
8185 1.1 christos insn2 = 0x38630000; /* addi 3,3,0 */
8186 1.1 christos bfd_put_32 (input_bfd, insn2,
8187 1.1 christos contents + rel->r_offset - d_offset);
8188 1.1 christos /* Zap the reloc on the _tls_get_addr call too. */
8189 1.1 christos BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
8190 1.1 christos rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8191 1.1.1.5 christos goto again;
8192 1.1 christos }
8193 1.1 christos break;
8194 1.1 christos }
8195 1.1 christos
8196 1.1 christos /* Handle other relocations that tweak non-addend part of insn. */
8197 1.1 christos branch_bit = 0;
8198 1.1 christos switch (r_type)
8199 1.1.1.5 christos {
8200 1.1 christos default:
8201 1.1 christos break;
8202 1.1 christos
8203 1.1 christos /* Branch taken prediction relocations. */
8204 1.1 christos case R_PPC_ADDR14_BRTAKEN:
8205 1.1 christos case R_PPC_REL14_BRTAKEN:
8206 1.1 christos branch_bit = BRANCH_PREDICT_BIT;
8207 1.1 christos /* Fall through. */
8208 1.1 christos
8209 1.1 christos /* Branch not taken prediction relocations. */
8210 1.1 christos case R_PPC_ADDR14_BRNTAKEN:
8211 1.1.1.5 christos case R_PPC_REL14_BRNTAKEN:
8212 1.1 christos {
8213 1.1 christos bfd_vma insn;
8214 1.1 christos
8215 1.1 christos insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
8216 1.1.1.3 christos insn &= ~BRANCH_PREDICT_BIT;
8217 1.1.1.3 christos insn |= branch_bit;
8218 1.1.1.3 christos
8219 1.1.1.3 christos from = (rel->r_offset
8220 1.1.1.3 christos + input_section->output_offset
8221 1.1.1.3 christos + input_section->output_section->vma);
8222 1.1.1.3 christos
8223 1.1.1.3 christos /* Invert 'y' bit if not the default. */
8224 1.1.1.3 christos if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8225 1.1.1.3 christos insn ^= BRANCH_PREDICT_BIT;
8226 1.1.1.3 christos
8227 1.1.1.3 christos bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
8228 1.1.1.3 christos break;
8229 1.1.1.3 christos }
8230 1.1.1.5 christos }
8231 1.1.1.3 christos
8232 1.1.1.3 christos if (ELIMINATE_COPY_RELOCS
8233 1.1.1.3 christos && h != NULL
8234 1.1.1.3 christos && !h->def_regular
8235 1.1.1.3 christos && h->protected_def
8236 1.1.1.3 christos && ppc_elf_hash_entry (h)->has_addr16_ha
8237 1.1.1.3 christos && ppc_elf_hash_entry (h)->has_addr16_lo
8238 1.1.1.3 christos && htab->params->pic_fixup > 0)
8239 1.1.1.3 christos {
8240 1.1.1.3 christos /* Convert lis;addi or lis;load/store accessing a protected
8241 1.1.1.3 christos variable defined in a shared library to PIC. */
8242 1.1.1.3 christos unsigned int insn;
8243 1.1.1.3 christos
8244 1.1.1.3 christos if (r_type == R_PPC_ADDR16_HA)
8245 1.1.1.3 christos {
8246 1.1.1.5 christos insn = bfd_get_32 (input_bfd,
8247 1.1.1.3 christos contents + rel->r_offset - d_offset);
8248 1.1.1.3 christos if ((insn & (0x3f << 26)) == (15u << 26)
8249 1.1.1.5 christos && (insn & (0x1f << 16)) == 0 /* lis */)
8250 1.1.1.3 christos {
8251 1.1.1.5 christos bfd_byte *p;
8252 1.1.1.5 christos bfd_vma off;
8253 1.1.1.3 christos bfd_vma got_addr;
8254 1.1.1.4 christos
8255 1.1.1.4 christos p = (contents + input_section->size
8256 1.1.1.4 christos - relax_info->workaround_size
8257 1.1.1.3 christos - relax_info->picfixup_size
8258 1.1.1.5 christos + picfixup_size);
8259 1.1.1.5 christos off = (p - contents) - (rel->r_offset - d_offset);
8260 1.1.1.3 christos if (off > 0x1fffffc || (off & 3) != 0)
8261 1.1.1.3 christos info->callbacks->einfo
8262 1.1.1.3 christos (_("%H: fixup branch overflow\n"),
8263 1.1.1.3 christos input_bfd, input_section, rel->r_offset);
8264 1.1.1.3 christos
8265 1.1.1.3 christos bfd_put_32 (input_bfd, B | off,
8266 1.1.1.5 christos contents + rel->r_offset - d_offset);
8267 1.1.1.3 christos got_addr = (htab->elf.sgot->output_section->vma
8268 1.1.1.5 christos + htab->elf.sgot->output_offset
8269 1.1.1.3 christos + (h->got.offset & ~1));
8270 1.1.1.3 christos wrel->r_offset = (p - contents) + d_offset;
8271 1.1.1.3 christos wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8272 1.1.1.3 christos wrel->r_addend = got_addr;
8273 1.1.1.3 christos insn &= ~0xffff;
8274 1.1.1.4 christos insn |= ((unsigned int) (got_addr + 0x8000) >> 16) & 0xffff;
8275 1.1.1.4 christos bfd_put_32 (input_bfd, insn, p);
8276 1.1.1.3 christos
8277 1.1.1.4 christos /* Convert lis to lwz, loading address from GOT. */
8278 1.1.1.3 christos insn &= ~0xffff;
8279 1.1.1.3 christos insn ^= (32u ^ 15u) << 26;
8280 1.1.1.3 christos insn |= (insn & (0x1f << 21)) >> 5;
8281 1.1.1.3 christos insn |= got_addr & 0xffff;
8282 1.1.1.3 christos bfd_put_32 (input_bfd, insn, p + 4);
8283 1.1.1.3 christos
8284 1.1.1.3 christos bfd_put_32 (input_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
8285 1.1.1.5 christos picfixup_size += 12;
8286 1.1.1.5 christos
8287 1.1.1.3 christos /* Use one of the spare relocs, so --emit-relocs
8288 1.1.1.3 christos output is reasonable. */
8289 1.1.1.3 christos memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8290 1.1.1.3 christos wrel++, rel++;
8291 1.1.1.3 christos rel->r_offset = wrel[-1].r_offset + 4;
8292 1.1.1.5 christos rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
8293 1.1.1.3 christos rel->r_addend = wrel[-1].r_addend;
8294 1.1.1.3 christos
8295 1.1.1.3 christos /* Continue on as if we had a got reloc, to output
8296 1.1.1.3 christos dynamic reloc. */
8297 1.1.1.3 christos r_type = R_PPC_GOT16_LO;
8298 1.1.1.3 christos }
8299 1.1.1.3 christos else
8300 1.1.1.3 christos info->callbacks->einfo
8301 1.1.1.3 christos /* xgettext:c-format */
8302 1.1.1.3 christos (_("%H: error: %s with unexpected instruction %x\n"),
8303 1.1.1.3 christos input_bfd, input_section, rel->r_offset,
8304 1.1.1.3 christos "R_PPC_ADDR16_HA", insn);
8305 1.1.1.3 christos }
8306 1.1.1.3 christos else if (r_type == R_PPC_ADDR16_LO)
8307 1.1.1.3 christos {
8308 1.1.1.3 christos insn = bfd_get_32 (input_bfd,
8309 1.1.1.3 christos contents + rel->r_offset - d_offset);
8310 1.1.1.3 christos if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8311 1.1.1.3 christos || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8312 1.1.1.3 christos || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8313 1.1.1.3 christos || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8314 1.1.1.3 christos || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8315 1.1.1.3 christos || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8316 1.1.1.3 christos || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8317 1.1.1.3 christos || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8318 1.1.1.3 christos || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8319 1.1.1.3 christos || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8320 1.1.1.5 christos || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8321 1.1.1.5 christos || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8322 1.1.1.3 christos || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8323 1.1.1.3 christos || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8324 1.1.1.3 christos || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8325 1.1.1.3 christos && (insn & 3) != 1)
8326 1.1.1.3 christos || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8327 1.1 christos && ((insn & 3) == 0 || (insn & 3) == 3)))
8328 1.1 christos {
8329 1.1 christos /* Arrange to apply the reloc addend, if any. */
8330 1.1 christos relocation = 0;
8331 1.1 christos unresolved_reloc = FALSE;
8332 1.1 christos rel->r_info = ELF32_R_INFO (0, r_type);
8333 1.1 christos }
8334 1.1 christos else
8335 1.1 christos info->callbacks->einfo
8336 1.1 christos /* xgettext:c-format */
8337 1.1 christos (_("%H: error: %s with unexpected instruction %x\n"),
8338 1.1 christos input_bfd, input_section, rel->r_offset,
8339 1.1 christos "R_PPC_ADDR16_LO", insn);
8340 1.1 christos }
8341 1.1 christos }
8342 1.1 christos
8343 1.1 christos ifunc = NULL;
8344 1.1 christos if (!htab->is_vxworks)
8345 1.1 christos {
8346 1.1 christos struct plt_entry *ent;
8347 1.1 christos
8348 1.1 christos if (h != NULL)
8349 1.1.1.4 christos {
8350 1.1 christos if (h->type == STT_GNU_IFUNC)
8351 1.1 christos ifunc = &h->plt.plist;
8352 1.1 christos }
8353 1.1.1.4 christos else if (local_got_offsets != NULL
8354 1.1 christos && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8355 1.1 christos {
8356 1.1 christos struct plt_entry **local_plt;
8357 1.1 christos
8358 1.1 christos local_plt = (struct plt_entry **) (local_got_offsets
8359 1.1.1.5 christos + symtab_hdr->sh_info);
8360 1.1.1.5 christos ifunc = local_plt + r_symndx;
8361 1.1.1.5 christos }
8362 1.1.1.5 christos
8363 1.1.1.5 christos ent = NULL;
8364 1.1.1.5 christos if (ifunc != NULL
8365 1.1.1.5 christos && (!bfd_link_pic (info)
8366 1.1.1.5 christos || is_branch_reloc (r_type)))
8367 1.1.1.5 christos {
8368 1.1.1.5 christos addend = 0;
8369 1.1.1.5 christos if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
8370 1.1.1.5 christos addend = rel->r_addend;
8371 1.1.1.5 christos ent = find_plt_ent (ifunc, got2, addend);
8372 1.1.1.5 christos }
8373 1.1.1.5 christos if (ent != NULL)
8374 1.1.1.5 christos {
8375 1.1.1.5 christos if (bfd_link_pic (info)
8376 1.1.1.5 christos && ent->sec != got2
8377 1.1.1.5 christos && htab->plt_type != PLT_NEW
8378 1.1.1.5 christos && (!htab->elf.dynamic_sections_created
8379 1.1.1.5 christos || h == NULL
8380 1.1 christos || h->dynindx == -1))
8381 1.1 christos {
8382 1.1 christos /* Uh oh, we are going to create a pic glink stub
8383 1.1 christos for an ifunc (here for h == NULL and later in
8384 1.1 christos finish_dynamic_symbol for h != NULL), and
8385 1.1.1.5 christos apparently are using code compiled with
8386 1.1.1.5 christos -mbss-plt. The difficulty is that -mbss-plt code
8387 1.1 christos gives no indication via a magic PLTREL24 addend
8388 1.1 christos whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8389 1.1 christos is pointing into a .got2 section (and how far
8390 1.1.1.5 christos into .got2). */
8391 1.1.1.5 christos info->callbacks->einfo
8392 1.1 christos /* xgettext:c-format */
8393 1.1 christos (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"),
8394 1.1.1.5 christos input_bfd, input_section, rel->r_offset, sym_name);
8395 1.1 christos }
8396 1.1 christos if (h == NULL && (ent->plt.offset & 1) == 0)
8397 1.1 christos {
8398 1.1 christos Elf_Internal_Rela rela;
8399 1.1 christos bfd_byte *loc;
8400 1.1 christos
8401 1.1 christos rela.r_offset = (htab->elf.iplt->output_section->vma
8402 1.1.1.5 christos + htab->elf.iplt->output_offset
8403 1.1 christos + ent->plt.offset);
8404 1.1 christos rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8405 1.1 christos rela.r_addend = relocation;
8406 1.1 christos loc = htab->elf.irelplt->contents;
8407 1.1 christos loc += (htab->elf.irelplt->reloc_count++
8408 1.1 christos * sizeof (Elf32_External_Rela));
8409 1.1.1.2 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8410 1.1.1.2 christos htab->local_ifunc_resolver = 1;
8411 1.1 christos
8412 1.1 christos ent->plt.offset |= 1;
8413 1.1 christos }
8414 1.1 christos if (h == NULL && (ent->glink_offset & 1) == 0)
8415 1.1.1.5 christos {
8416 1.1.1.5 christos unsigned char *p = ((unsigned char *) htab->glink->contents
8417 1.1 christos + ent->glink_offset);
8418 1.1 christos write_glink_stub (ent, htab->elf.iplt, p, info);
8419 1.1 christos ent->glink_offset |= 1;
8420 1.1 christos }
8421 1.1 christos
8422 1.1 christos unresolved_reloc = FALSE;
8423 1.1 christos if (htab->plt_type == PLT_NEW
8424 1.1 christos || !htab->elf.dynamic_sections_created
8425 1.1 christos || h == NULL
8426 1.1 christos || h->dynindx == -1)
8427 1.1 christos relocation = (htab->glink->output_section->vma
8428 1.1 christos + htab->glink->output_offset
8429 1.1 christos + (ent->glink_offset & ~1));
8430 1.1.1.5 christos else
8431 1.1 christos relocation = (htab->elf.splt->output_section->vma
8432 1.1 christos + htab->elf.splt->output_offset
8433 1.1 christos + ent->plt.offset);
8434 1.1 christos }
8435 1.1 christos }
8436 1.1.1.4 christos
8437 1.1 christos addend = rel->r_addend;
8438 1.1 christos tls_type = 0;
8439 1.1 christos howto = NULL;
8440 1.1 christos if (r_type < R_PPC_max)
8441 1.1 christos howto = ppc_elf_howto_table[r_type];
8442 1.1 christos switch (r_type)
8443 1.1 christos {
8444 1.1 christos default:
8445 1.1.1.4 christos info->callbacks->einfo
8446 1.1 christos /* xgettext:c-format */
8447 1.1 christos (_("%P: %B: unknown relocation type %d for symbol %s\n"),
8448 1.1 christos input_bfd, (int) r_type, sym_name);
8449 1.1 christos
8450 1.1 christos bfd_set_error (bfd_error_bad_value);
8451 1.1 christos ret = FALSE;
8452 1.1 christos goto copy_reloc;
8453 1.1 christos
8454 1.1 christos case R_PPC_NONE:
8455 1.1 christos case R_PPC_TLS:
8456 1.1 christos case R_PPC_TLSGD:
8457 1.1 christos case R_PPC_TLSLD:
8458 1.1 christos case R_PPC_EMB_MRKREF:
8459 1.1 christos case R_PPC_GNU_VTINHERIT:
8460 1.1 christos case R_PPC_GNU_VTENTRY:
8461 1.1 christos goto copy_reloc;
8462 1.1 christos
8463 1.1 christos /* GOT16 relocations. Like an ADDR16 using the symbol's
8464 1.1 christos address in the GOT as relocation value instead of the
8465 1.1 christos symbol's value itself. Also, create a GOT entry for the
8466 1.1 christos symbol and put the symbol value there. */
8467 1.1 christos case R_PPC_GOT_TLSGD16:
8468 1.1 christos case R_PPC_GOT_TLSGD16_LO:
8469 1.1 christos case R_PPC_GOT_TLSGD16_HI:
8470 1.1 christos case R_PPC_GOT_TLSGD16_HA:
8471 1.1 christos tls_type = TLS_TLS | TLS_GD;
8472 1.1 christos goto dogot;
8473 1.1 christos
8474 1.1 christos case R_PPC_GOT_TLSLD16:
8475 1.1 christos case R_PPC_GOT_TLSLD16_LO:
8476 1.1 christos case R_PPC_GOT_TLSLD16_HI:
8477 1.1 christos case R_PPC_GOT_TLSLD16_HA:
8478 1.1 christos tls_type = TLS_TLS | TLS_LD;
8479 1.1 christos goto dogot;
8480 1.1 christos
8481 1.1 christos case R_PPC_GOT_TPREL16:
8482 1.1 christos case R_PPC_GOT_TPREL16_LO:
8483 1.1 christos case R_PPC_GOT_TPREL16_HI:
8484 1.1 christos case R_PPC_GOT_TPREL16_HA:
8485 1.1 christos tls_type = TLS_TLS | TLS_TPREL;
8486 1.1 christos goto dogot;
8487 1.1 christos
8488 1.1 christos case R_PPC_GOT_DTPREL16:
8489 1.1 christos case R_PPC_GOT_DTPREL16_LO:
8490 1.1 christos case R_PPC_GOT_DTPREL16_HI:
8491 1.1 christos case R_PPC_GOT_DTPREL16_HA:
8492 1.1.1.5 christos tls_type = TLS_TLS | TLS_DTPREL;
8493 1.1 christos goto dogot;
8494 1.1 christos
8495 1.1 christos case R_PPC_GOT16:
8496 1.1 christos case R_PPC_GOT16_LO:
8497 1.1 christos case R_PPC_GOT16_HI:
8498 1.1 christos case R_PPC_GOT16_HA:
8499 1.1 christos tls_mask = 0;
8500 1.1 christos dogot:
8501 1.1 christos {
8502 1.1.1.5 christos /* Relocation is to the entry for this symbol in the global
8503 1.1.1.5 christos offset table. */
8504 1.1.1.5 christos bfd_vma off;
8505 1.1.1.5 christos bfd_vma *offp;
8506 1.1.1.5 christos unsigned long indx;
8507 1.1 christos
8508 1.1 christos if (htab->elf.sgot == NULL)
8509 1.1 christos abort ();
8510 1.1 christos
8511 1.1 christos indx = 0;
8512 1.1 christos if (tls_type == (TLS_TLS | TLS_LD)
8513 1.1 christos && (h == NULL
8514 1.1 christos || !h->def_dynamic))
8515 1.1 christos offp = &htab->tlsld_got.offset;
8516 1.1 christos else if (h != NULL)
8517 1.1 christos {
8518 1.1 christos if (!htab->elf.dynamic_sections_created
8519 1.1 christos || h->dynindx == -1
8520 1.1 christos || SYMBOL_REFERENCES_LOCAL (info, h)
8521 1.1 christos || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
8522 1.1 christos && h->root.type == bfd_link_hash_undefweak))
8523 1.1 christos /* This is actually a static link, or it is a
8524 1.1 christos -Bsymbolic link and the symbol is defined
8525 1.1 christos locally, or the symbol was forced to be local
8526 1.1 christos because of a version file. */
8527 1.1 christos ;
8528 1.1 christos else
8529 1.1 christos {
8530 1.1 christos indx = h->dynindx;
8531 1.1 christos unresolved_reloc = FALSE;
8532 1.1 christos }
8533 1.1 christos offp = &h->got.offset;
8534 1.1 christos }
8535 1.1 christos else
8536 1.1 christos {
8537 1.1 christos if (local_got_offsets == NULL)
8538 1.1 christos abort ();
8539 1.1 christos offp = &local_got_offsets[r_symndx];
8540 1.1 christos }
8541 1.1 christos
8542 1.1 christos /* The offset must always be a multiple of 4. We use the
8543 1.1 christos least significant bit to record whether we have already
8544 1.1 christos processed this entry. */
8545 1.1 christos off = *offp;
8546 1.1 christos if ((off & 1) != 0)
8547 1.1 christos off &= ~1;
8548 1.1 christos else
8549 1.1 christos {
8550 1.1 christos unsigned int tls_m = (tls_mask
8551 1.1 christos & (TLS_LD | TLS_GD | TLS_DTPREL
8552 1.1 christos | TLS_TPREL | TLS_TPRELGD));
8553 1.1 christos
8554 1.1 christos if (offp == &htab->tlsld_got.offset)
8555 1.1 christos tls_m = TLS_LD;
8556 1.1 christos else if (h == NULL
8557 1.1 christos || !h->def_dynamic)
8558 1.1 christos tls_m &= ~TLS_LD;
8559 1.1 christos
8560 1.1 christos /* We might have multiple got entries for this sym.
8561 1.1 christos Initialize them all. */
8562 1.1 christos do
8563 1.1 christos {
8564 1.1 christos int tls_ty = 0;
8565 1.1 christos
8566 1.1 christos if ((tls_m & TLS_LD) != 0)
8567 1.1 christos {
8568 1.1 christos tls_ty = TLS_TLS | TLS_LD;
8569 1.1 christos tls_m &= ~TLS_LD;
8570 1.1 christos }
8571 1.1 christos else if ((tls_m & TLS_GD) != 0)
8572 1.1.1.5 christos {
8573 1.1.1.5 christos tls_ty = TLS_TLS | TLS_GD;
8574 1.1.1.5 christos tls_m &= ~TLS_GD;
8575 1.1.1.5 christos }
8576 1.1.1.5 christos else if ((tls_m & TLS_DTPREL) != 0)
8577 1.1.1.5 christos {
8578 1.1 christos tls_ty = TLS_TLS | TLS_DTPREL;
8579 1.1.1.5 christos tls_m &= ~TLS_DTPREL;
8580 1.1 christos }
8581 1.1 christos else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8582 1.1 christos {
8583 1.1.1.5 christos tls_ty = TLS_TLS | TLS_TPREL;
8584 1.1.1.5 christos tls_m = 0;
8585 1.1.1.5 christos }
8586 1.1.1.5 christos
8587 1.1.1.5 christos /* Generate relocs for the dynamic linker. */
8588 1.1.1.5 christos if (indx != 0
8589 1.1.1.5 christos || (bfd_link_pic (info)
8590 1.1.1.5 christos && (h == NULL
8591 1.1.1.5 christos || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8592 1.1 christos || h->root.type != bfd_link_hash_undefweak
8593 1.1 christos || offp == &htab->tlsld_got.offset)))
8594 1.1 christos {
8595 1.1 christos asection *rsec = htab->elf.srelgot;
8596 1.1 christos bfd_byte * loc;
8597 1.1 christos
8598 1.1 christos if (ifunc != NULL)
8599 1.1 christos {
8600 1.1 christos rsec = htab->elf.irelplt;
8601 1.1 christos if (indx == 0)
8602 1.1 christos htab->local_ifunc_resolver = 1;
8603 1.1 christos else if (is_static_defined (h))
8604 1.1 christos htab->maybe_local_ifunc_resolver = 1;
8605 1.1 christos }
8606 1.1 christos outrel.r_offset = (htab->elf.sgot->output_section->vma
8607 1.1 christos + htab->elf.sgot->output_offset
8608 1.1 christos + off);
8609 1.1 christos outrel.r_addend = 0;
8610 1.1 christos if (tls_ty & (TLS_LD | TLS_GD))
8611 1.1 christos {
8612 1.1 christos outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8613 1.1 christos if (tls_ty == (TLS_TLS | TLS_GD))
8614 1.1 christos {
8615 1.1 christos loc = rsec->contents;
8616 1.1 christos loc += (rsec->reloc_count++
8617 1.1 christos * sizeof (Elf32_External_Rela));
8618 1.1 christos bfd_elf32_swap_reloca_out (output_bfd,
8619 1.1 christos &outrel, loc);
8620 1.1 christos outrel.r_offset += 4;
8621 1.1 christos outrel.r_info
8622 1.1 christos = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8623 1.1.1.3 christos }
8624 1.1.1.3 christos }
8625 1.1.1.3 christos else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8626 1.1.1.3 christos outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8627 1.1.1.3 christos else if (tls_ty == (TLS_TLS | TLS_TPREL))
8628 1.1.1.3 christos outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8629 1.1 christos else if (indx != 0)
8630 1.1 christos outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8631 1.1 christos else if (ifunc != NULL)
8632 1.1 christos outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8633 1.1 christos else
8634 1.1 christos outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8635 1.1 christos if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8636 1.1 christos {
8637 1.1 christos outrel.r_addend += relocation;
8638 1.1 christos if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8639 1.1 christos {
8640 1.1 christos if (htab->elf.tls_sec == NULL)
8641 1.1.1.5 christos outrel.r_addend = 0;
8642 1.1.1.5 christos else
8643 1.1.1.5 christos outrel.r_addend -= htab->elf.tls_sec->vma;
8644 1.1.1.5 christos }
8645 1.1 christos }
8646 1.1.1.5 christos loc = rsec->contents;
8647 1.1 christos loc += (rsec->reloc_count++
8648 1.1.1.3 christos * sizeof (Elf32_External_Rela));
8649 1.1.1.3 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8650 1.1.1.3 christos }
8651 1.1.1.3 christos
8652 1.1.1.5 christos /* Init the .got section contents if we're not
8653 1.1.1.5 christos emitting a reloc. */
8654 1.1.1.5 christos else
8655 1.1.1.5 christos {
8656 1.1.1.5 christos bfd_vma value = relocation;
8657 1.1.1.5 christos int tlsopt = (htab->plt_type == PLT_NEW
8658 1.1.1.3 christos && !htab->params->no_tls_get_addr_opt
8659 1.1.1.3 christos && htab->tls_get_addr != NULL
8660 1.1 christos && htab->tls_get_addr->plt.plist != NULL);
8661 1.1.1.5 christos
8662 1.1 christos if (tls_ty != 0)
8663 1.1.1.5 christos {
8664 1.1.1.5 christos if (htab->elf.tls_sec == NULL)
8665 1.1.1.5 christos value = 0;
8666 1.1 christos else
8667 1.1 christos {
8668 1.1.1.5 christos if (tls_ty & TLS_LD)
8669 1.1.1.5 christos value = 0;
8670 1.1 christos else
8671 1.1 christos value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8672 1.1 christos if ((tls_ty & TLS_TPREL)
8673 1.1 christos || (tlsopt && !(tls_ty & TLS_DTPREL)))
8674 1.1 christos value += DTP_OFFSET - TP_OFFSET;
8675 1.1 christos }
8676 1.1 christos
8677 1.1 christos if (tls_ty & (TLS_LD | TLS_GD))
8678 1.1 christos {
8679 1.1 christos bfd_put_32 (input_bfd, value,
8680 1.1 christos htab->elf.sgot->contents + off + 4);
8681 1.1 christos value = !tlsopt;
8682 1.1 christos }
8683 1.1 christos }
8684 1.1 christos bfd_put_32 (input_bfd, value,
8685 1.1 christos htab->elf.sgot->contents + off);
8686 1.1 christos }
8687 1.1 christos
8688 1.1 christos off += 4;
8689 1.1 christos if (tls_ty & (TLS_LD | TLS_GD))
8690 1.1 christos off += 4;
8691 1.1 christos }
8692 1.1 christos while (tls_m != 0);
8693 1.1 christos
8694 1.1 christos off = *offp;
8695 1.1 christos *offp = off | 1;
8696 1.1 christos }
8697 1.1 christos
8698 1.1 christos if (off >= (bfd_vma) -2)
8699 1.1 christos abort ();
8700 1.1 christos
8701 1.1 christos if ((tls_type & TLS_TLS) != 0)
8702 1.1 christos {
8703 1.1 christos if (tls_type != (TLS_TLS | TLS_LD))
8704 1.1 christos {
8705 1.1 christos if ((tls_mask & TLS_LD) != 0
8706 1.1.1.3 christos && !(h == NULL
8707 1.1.1.3 christos || !h->def_dynamic))
8708 1.1.1.4 christos off += 8;
8709 1.1.1.3 christos if (tls_type != (TLS_TLS | TLS_GD))
8710 1.1.1.5 christos {
8711 1.1.1.5 christos if ((tls_mask & TLS_GD) != 0)
8712 1.1 christos off += 8;
8713 1.1 christos if (tls_type != (TLS_TLS | TLS_DTPREL))
8714 1.1 christos {
8715 1.1 christos if ((tls_mask & TLS_DTPREL) != 0)
8716 1.1 christos off += 4;
8717 1.1 christos }
8718 1.1 christos }
8719 1.1 christos }
8720 1.1 christos }
8721 1.1.1.5 christos
8722 1.1.1.5 christos /* If here for a picfixup, we're done. */
8723 1.1 christos if (r_type != ELF32_R_TYPE (rel->r_info))
8724 1.1 christos goto copy_reloc;
8725 1.1 christos
8726 1.1 christos relocation = (htab->elf.sgot->output_section->vma
8727 1.1.1.2 christos + htab->elf.sgot->output_offset
8728 1.1 christos + off
8729 1.1.1.2 christos - SYM_VAL (htab->elf.hgot));
8730 1.1 christos
8731 1.1 christos /* Addends on got relocations don't make much sense.
8732 1.1 christos x+off@got is actually x@got+off, and since the got is
8733 1.1 christos generated by a hash table traversal, the value in the
8734 1.1 christos got at entry m+n bears little relation to the entry m. */
8735 1.1.1.4 christos if (addend != 0)
8736 1.1.1.4 christos info->callbacks->einfo
8737 1.1.1.4 christos /* xgettext:c-format */
8738 1.1.1.4 christos (_("%H: non-zero addend on %s reloc against `%s'\n"),
8739 1.1.1.4 christos input_bfd, input_section, rel->r_offset,
8740 1.1.1.4 christos howto->name,
8741 1.1.1.4 christos sym_name);
8742 1.1 christos }
8743 1.1.1.5 christos break;
8744 1.1.1.5 christos
8745 1.1.1.5 christos /* Relocations that need no special processing. */
8746 1.1.1.5 christos case R_PPC_LOCAL24PC:
8747 1.1.1.5 christos /* It makes no sense to point a local relocation
8748 1.1.1.5 christos at a symbol not in this object. */
8749 1.1.1.5 christos if (unresolved_reloc)
8750 1.1.1.5 christos {
8751 1.1.1.5 christos (*info->callbacks->undefined_symbol) (info,
8752 1.1.1.5 christos h->root.root.string,
8753 1.1.1.5 christos input_bfd,
8754 1.1.1.5 christos input_section,
8755 1.1.1.5 christos rel->r_offset,
8756 1.1.1.5 christos TRUE);
8757 1.1.1.5 christos goto copy_reloc;
8758 1.1 christos }
8759 1.1 christos if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info))
8760 1.1 christos {
8761 1.1 christos /* @local on an ifunc does not really make sense since
8762 1.1 christos the ifunc resolver can take you anywhere. More
8763 1.1 christos seriously, calls to ifuncs must go through a plt call
8764 1.1.1.3 christos stub, and for pic the plt call stubs uses r30 to
8765 1.1.1.3 christos access the PLT. The problem is that a call that is
8766 1.1 christos local won't have the +32k reloc addend trick marking
8767 1.1 christos -fPIC code, so the linker won't know whether r30 is
8768 1.1 christos _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8769 1.1 christos /* xgettext:c-format */
8770 1.1 christos info->callbacks->einfo (_("%X%H: @local call to ifunc %s\n"),
8771 1.1 christos input_bfd, input_section, rel->r_offset,
8772 1.1 christos h->root.root.string);
8773 1.1 christos }
8774 1.1 christos break;
8775 1.1 christos
8776 1.1 christos case R_PPC_DTPREL16:
8777 1.1 christos case R_PPC_DTPREL16_LO:
8778 1.1 christos case R_PPC_DTPREL16_HI:
8779 1.1 christos case R_PPC_DTPREL16_HA:
8780 1.1 christos if (htab->elf.tls_sec != NULL)
8781 1.1 christos addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8782 1.1 christos break;
8783 1.1.1.5 christos
8784 1.1 christos /* Relocations that may need to be propagated if this is a shared
8785 1.1 christos object. */
8786 1.1.1.5 christos case R_PPC_TPREL16:
8787 1.1 christos case R_PPC_TPREL16_LO:
8788 1.1 christos case R_PPC_TPREL16_HI:
8789 1.1.1.3 christos case R_PPC_TPREL16_HA:
8790 1.1.1.3 christos if (h != NULL
8791 1.1 christos && h->root.type == bfd_link_hash_undefweak
8792 1.1 christos && h->dynindx == -1)
8793 1.1 christos {
8794 1.1 christos /* Make this relocation against an undefined weak symbol
8795 1.1 christos resolve to zero. This is really just a tweak, since
8796 1.1 christos code using weak externs ought to check that they are
8797 1.1.1.3 christos defined before using them. */
8798 1.1.1.3 christos bfd_byte *p = contents + rel->r_offset - d_offset;
8799 1.1 christos unsigned int insn = bfd_get_32 (input_bfd, p);
8800 1.1 christos insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8801 1.1 christos if (insn != 0)
8802 1.1.1.3 christos bfd_put_32 (input_bfd, insn, p);
8803 1.1.1.3 christos break;
8804 1.1 christos }
8805 1.1 christos if (htab->elf.tls_sec != NULL)
8806 1.1 christos addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8807 1.1 christos /* The TPREL16 relocs shouldn't really be used in shared
8808 1.1 christos libs as they will result in DT_TEXTREL being set, but
8809 1.1 christos support them anyway. */
8810 1.1 christos goto dodyn;
8811 1.1 christos
8812 1.1 christos case R_PPC_TPREL32:
8813 1.1 christos if (htab->elf.tls_sec != NULL)
8814 1.1 christos addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8815 1.1.1.4 christos goto dodyn;
8816 1.1 christos
8817 1.1 christos case R_PPC_DTPREL32:
8818 1.1 christos if (htab->elf.tls_sec != NULL)
8819 1.1 christos addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8820 1.1 christos goto dodyn;
8821 1.1 christos
8822 1.1 christos case R_PPC_DTPMOD32:
8823 1.1 christos relocation = 1;
8824 1.1 christos addend = 0;
8825 1.1 christos goto dodyn;
8826 1.1 christos
8827 1.1 christos case R_PPC_REL16:
8828 1.1 christos case R_PPC_REL16_LO:
8829 1.1 christos case R_PPC_REL16_HI:
8830 1.1 christos case R_PPC_REL16_HA:
8831 1.1 christos case R_PPC_REL16DX_HA:
8832 1.1 christos break;
8833 1.1 christos
8834 1.1 christos case R_PPC_REL32:
8835 1.1 christos if (h == NULL || h == htab->elf.hgot)
8836 1.1 christos break;
8837 1.1 christos /* fall through */
8838 1.1 christos
8839 1.1 christos case R_PPC_ADDR32:
8840 1.1 christos case R_PPC_ADDR16:
8841 1.1 christos case R_PPC_ADDR16_LO:
8842 1.1 christos case R_PPC_ADDR16_HI:
8843 1.1 christos case R_PPC_ADDR16_HA:
8844 1.1 christos case R_PPC_UADDR32:
8845 1.1 christos case R_PPC_UADDR16:
8846 1.1 christos goto dodyn;
8847 1.1 christos
8848 1.1 christos case R_PPC_VLE_REL8:
8849 1.1 christos case R_PPC_VLE_REL15:
8850 1.1.1.4 christos case R_PPC_VLE_REL24:
8851 1.1 christos case R_PPC_REL24:
8852 1.1 christos case R_PPC_REL14:
8853 1.1 christos case R_PPC_REL14_BRTAKEN:
8854 1.1 christos case R_PPC_REL14_BRNTAKEN:
8855 1.1 christos /* If these relocations are not to a named symbol, they can be
8856 1.1 christos handled right here, no need to bother the dynamic linker. */
8857 1.1 christos if (SYMBOL_CALLS_LOCAL (info, h)
8858 1.1 christos || h == htab->elf.hgot)
8859 1.1.1.4 christos break;
8860 1.1 christos /* fall through */
8861 1.1 christos
8862 1.1 christos case R_PPC_ADDR24:
8863 1.1 christos case R_PPC_ADDR14:
8864 1.1 christos case R_PPC_ADDR14_BRTAKEN:
8865 1.1 christos case R_PPC_ADDR14_BRNTAKEN:
8866 1.1 christos if (h != NULL && !bfd_link_pic (info))
8867 1.1 christos break;
8868 1.1 christos /* fall through */
8869 1.1.1.4 christos
8870 1.1 christos dodyn:
8871 1.1 christos if ((input_section->flags & SEC_ALLOC) == 0
8872 1.1 christos || is_vxworks_tls)
8873 1.1.1.3 christos break;
8874 1.1.1.3 christos
8875 1.1.1.3 christos if ((bfd_link_pic (info)
8876 1.1.1.3 christos && !(h != NULL
8877 1.1.1.3 christos && ((h->root.type == bfd_link_hash_undefined
8878 1.1 christos && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
8879 1.1 christos || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
8880 1.1 christos || (h->root.type == bfd_link_hash_undefweak
8881 1.1 christos && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
8882 1.1.1.5 christos && (must_be_dyn_reloc (info, r_type)
8883 1.1.1.5 christos || !SYMBOL_CALLS_LOCAL (info, h)))
8884 1.1 christos || (ELIMINATE_COPY_RELOCS
8885 1.1 christos && !bfd_link_pic (info)
8886 1.1 christos && h != NULL
8887 1.1 christos && h->dynindx != -1
8888 1.1 christos && !h->non_got_ref
8889 1.1 christos && !h->def_regular
8890 1.1 christos && !(h->protected_def
8891 1.1 christos && ppc_elf_hash_entry (h)->has_addr16_ha
8892 1.1 christos && ppc_elf_hash_entry (h)->has_addr16_lo
8893 1.1 christos && htab->params->pic_fixup > 0)))
8894 1.1 christos {
8895 1.1 christos int skip;
8896 1.1 christos bfd_byte *loc;
8897 1.1 christos asection *sreloc;
8898 1.1 christos long indx = 0;
8899 1.1 christos
8900 1.1 christos #ifdef DEBUG
8901 1.1 christos fprintf (stderr, "ppc_elf_relocate_section needs to "
8902 1.1 christos "create relocation for %s\n",
8903 1.1 christos (h && h->root.root.string
8904 1.1 christos ? h->root.root.string : "<unknown>"));
8905 1.1 christos #endif
8906 1.1 christos
8907 1.1 christos /* When generating a shared object, these relocations
8908 1.1 christos are copied into the output file to be resolved at run
8909 1.1 christos time. */
8910 1.1 christos skip = 0;
8911 1.1.1.5 christos outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8912 1.1.1.5 christos input_section,
8913 1.1 christos rel->r_offset);
8914 1.1.1.5 christos if (outrel.r_offset == (bfd_vma) -1
8915 1.1 christos || outrel.r_offset == (bfd_vma) -2)
8916 1.1 christos skip = (int) outrel.r_offset;
8917 1.1 christos outrel.r_offset += (input_section->output_section->vma
8918 1.1 christos + input_section->output_offset);
8919 1.1 christos
8920 1.1 christos if (skip)
8921 1.1 christos memset (&outrel, 0, sizeof outrel);
8922 1.1 christos else if ((h != NULL
8923 1.1 christos && (h->root.type == bfd_link_hash_undefined
8924 1.1 christos || h->root.type == bfd_link_hash_undefweak))
8925 1.1 christos || !SYMBOL_REFERENCES_LOCAL (info, h))
8926 1.1 christos {
8927 1.1 christos indx = h->dynindx;
8928 1.1 christos BFD_ASSERT (indx != -1);
8929 1.1 christos unresolved_reloc = FALSE;
8930 1.1 christos outrel.r_info = ELF32_R_INFO (indx, r_type);
8931 1.1 christos outrel.r_addend = rel->r_addend;
8932 1.1 christos }
8933 1.1 christos else
8934 1.1 christos {
8935 1.1 christos outrel.r_addend = relocation + rel->r_addend;
8936 1.1 christos
8937 1.1 christos if (r_type != R_PPC_ADDR32)
8938 1.1.1.5 christos {
8939 1.1.1.5 christos if (ifunc != NULL)
8940 1.1 christos {
8941 1.1 christos /* If we get here when building a static
8942 1.1 christos executable, then the libc startup function
8943 1.1 christos responsible for applying indirect function
8944 1.1 christos relocations is going to complain about
8945 1.1 christos the reloc type.
8946 1.1 christos If we get here when building a dynamic
8947 1.1 christos executable, it will be because we have
8948 1.1 christos a text relocation. The dynamic loader
8949 1.1 christos will set the text segment writable and
8950 1.1 christos non-executable to apply text relocations.
8951 1.1 christos So we'll segfault when trying to run the
8952 1.1 christos indirection function to resolve the reloc. */
8953 1.1 christos info->callbacks->einfo
8954 1.1 christos /* xgettext:c-format */
8955 1.1 christos (_("%H: relocation %s for indirect "
8956 1.1 christos "function %s unsupported\n"),
8957 1.1 christos input_bfd, input_section, rel->r_offset,
8958 1.1 christos howto->name,
8959 1.1 christos sym_name);
8960 1.1 christos ret = FALSE;
8961 1.1 christos }
8962 1.1 christos else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8963 1.1 christos ;
8964 1.1 christos else if (sec == NULL || sec->owner == NULL)
8965 1.1 christos {
8966 1.1 christos bfd_set_error (bfd_error_bad_value);
8967 1.1 christos ret = FALSE;
8968 1.1 christos }
8969 1.1 christos else
8970 1.1 christos {
8971 1.1 christos asection *osec;
8972 1.1 christos
8973 1.1 christos /* We are turning this relocation into one
8974 1.1 christos against a section symbol. It would be
8975 1.1 christos proper to subtract the symbol's value,
8976 1.1 christos osec->vma, from the emitted reloc addend,
8977 1.1 christos but ld.so expects buggy relocs.
8978 1.1 christos FIXME: Why not always use a zero index? */
8979 1.1 christos osec = sec->output_section;
8980 1.1 christos indx = elf_section_data (osec)->dynindx;
8981 1.1 christos if (indx == 0)
8982 1.1 christos {
8983 1.1 christos osec = htab->elf.text_index_section;
8984 1.1 christos indx = elf_section_data (osec)->dynindx;
8985 1.1 christos }
8986 1.1 christos BFD_ASSERT (indx != 0);
8987 1.1.1.5 christos #ifdef DEBUG
8988 1.1.1.5 christos if (indx == 0)
8989 1.1.1.5 christos printf ("indx=%ld section=%s flags=%08x name=%s\n",
8990 1.1.1.5 christos indx, osec->name, osec->flags,
8991 1.1.1.5 christos h->root.root.string);
8992 1.1.1.5 christos #endif
8993 1.1.1.5 christos }
8994 1.1.1.5 christos
8995 1.1.1.5 christos outrel.r_info = ELF32_R_INFO (indx, r_type);
8996 1.1.1.5 christos }
8997 1.1.1.5 christos else if (ifunc != NULL)
8998 1.1.1.5 christos outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8999 1.1 christos else
9000 1.1 christos outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
9001 1.1 christos }
9002 1.1 christos
9003 1.1 christos sreloc = elf_section_data (input_section)->sreloc;
9004 1.1.1.4 christos if (ifunc)
9005 1.1 christos {
9006 1.1.1.5 christos sreloc = htab->elf.irelplt;
9007 1.1.1.5 christos if (indx == 0)
9008 1.1.1.5 christos htab->local_ifunc_resolver = 1;
9009 1.1 christos else if (is_static_defined (h))
9010 1.1 christos htab->maybe_local_ifunc_resolver = 1;
9011 1.1 christos }
9012 1.1 christos if (sreloc == NULL)
9013 1.1 christos return FALSE;
9014 1.1 christos
9015 1.1.1.5 christos loc = sreloc->contents;
9016 1.1.1.5 christos loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
9017 1.1.1.5 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
9018 1.1.1.5 christos
9019 1.1.1.5 christos if (skip == -1)
9020 1.1.1.5 christos goto copy_reloc;
9021 1.1.1.5 christos
9022 1.1.1.5 christos /* This reloc will be computed at runtime. Clear the memory
9023 1.1.1.5 christos so that it contains a predictable value for prelink. */
9024 1.1.1.5 christos if (!skip)
9025 1.1.1.5 christos {
9026 1.1.1.5 christos relocation = howto->pc_relative ? outrel.r_offset : 0;
9027 1.1.1.5 christos addend = 0;
9028 1.1.1.5 christos break;
9029 1.1.1.5 christos }
9030 1.1.1.5 christos }
9031 1.1.1.5 christos else if (r_type == R_PPC_DTPMOD32
9032 1.1.1.5 christos && htab->plt_type == PLT_NEW
9033 1.1.1.5 christos && !htab->params->no_tls_get_addr_opt
9034 1.1.1.5 christos && htab->tls_get_addr != NULL
9035 1.1.1.5 christos && htab->tls_get_addr->plt.plist != NULL)
9036 1.1.1.5 christos {
9037 1.1.1.5 christos /* Set up for __tls_get_addr_opt stub when this entry
9038 1.1.1.5 christos does not have dynamic relocs. */
9039 1.1.1.5 christos relocation = 0;
9040 1.1.1.5 christos /* Set up the next word for local dynamic. If it turns
9041 1.1.1.5 christos out to be global dynamic, the reloc will overwrite
9042 1.1.1.5 christos this value. */
9043 1.1 christos if (rel->r_offset + 8 <= input_section->size)
9044 1.1 christos bfd_put_32 (input_bfd, DTP_OFFSET - TP_OFFSET,
9045 1.1 christos contents + rel->r_offset + 4);
9046 1.1 christos }
9047 1.1 christos else if (r_type == R_PPC_DTPREL32
9048 1.1 christos && htab->plt_type == PLT_NEW
9049 1.1 christos && !htab->params->no_tls_get_addr_opt
9050 1.1 christos && htab->tls_get_addr != NULL
9051 1.1 christos && htab->tls_get_addr->plt.plist != NULL
9052 1.1 christos && rel > relocs
9053 1.1 christos && rel[-1].r_info == ELF32_R_INFO (r_symndx, R_PPC_DTPMOD32)
9054 1.1.1.4 christos && rel[-1].r_offset + 4 == rel->r_offset)
9055 1.1 christos {
9056 1.1 christos /* __tls_get_addr_opt stub value. */
9057 1.1 christos addend += DTP_OFFSET - TP_OFFSET;
9058 1.1 christos }
9059 1.1 christos break;
9060 1.1 christos
9061 1.1 christos case R_PPC_RELAX_PLT:
9062 1.1 christos case R_PPC_RELAX_PLTREL24:
9063 1.1 christos if (h != NULL)
9064 1.1.1.5 christos {
9065 1.1.1.5 christos struct plt_entry *ent;
9066 1.1 christos bfd_vma got2_addend = 0;
9067 1.1 christos
9068 1.1.1.5 christos if (r_type == R_PPC_RELAX_PLTREL24)
9069 1.1 christos {
9070 1.1 christos if (bfd_link_pic (info))
9071 1.1 christos got2_addend = addend;
9072 1.1.1.2 christos addend = 0;
9073 1.1.1.2 christos }
9074 1.1.1.2 christos ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
9075 1.1.1.2 christos if (htab->plt_type == PLT_NEW)
9076 1.1.1.2 christos relocation = (htab->glink->output_section->vma
9077 1.1.1.4 christos + htab->glink->output_offset
9078 1.1.1.2 christos + ent->glink_offset);
9079 1.1.1.2 christos else
9080 1.1.1.2 christos relocation = (htab->elf.splt->output_section->vma
9081 1.1.1.2 christos + htab->elf.splt->output_offset
9082 1.1.1.2 christos + ent->plt.offset);
9083 1.1.1.5 christos }
9084 1.1.1.5 christos /* Fall through. */
9085 1.1.1.5 christos
9086 1.1.1.2 christos case R_PPC_RELAX:
9087 1.1.1.2 christos {
9088 1.1.1.2 christos const int *stub;
9089 1.1.1.2 christos size_t size;
9090 1.1.1.2 christos size_t insn_offset = rel->r_offset;
9091 1.1.1.2 christos unsigned int insn;
9092 1.1.1.2 christos
9093 1.1.1.2 christos if (bfd_link_pic (info))
9094 1.1 christos {
9095 1.1 christos relocation -= (input_section->output_section->vma
9096 1.1.1.4 christos + input_section->output_offset
9097 1.1.1.2 christos + rel->r_offset - 4);
9098 1.1 christos stub = shared_stub_entry;
9099 1.1.1.2 christos bfd_put_32 (input_bfd, stub[0], contents + insn_offset - 12);
9100 1.1.1.2 christos bfd_put_32 (input_bfd, stub[1], contents + insn_offset - 8);
9101 1.1.1.2 christos bfd_put_32 (input_bfd, stub[2], contents + insn_offset - 4);
9102 1.1.1.5 christos stub += 3;
9103 1.1.1.2 christos size = ARRAY_SIZE (shared_stub_entry) - 3;
9104 1.1.1.2 christos }
9105 1.1.1.2 christos else
9106 1.1.1.2 christos {
9107 1.1.1.5 christos stub = stub_entry;
9108 1.1.1.2 christos size = ARRAY_SIZE (stub_entry);
9109 1.1.1.2 christos }
9110 1.1.1.2 christos
9111 1.1.1.2 christos relocation += addend;
9112 1.1.1.2 christos if (bfd_link_relocatable (info))
9113 1.1.1.2 christos relocation = 0;
9114 1.1.1.2 christos
9115 1.1.1.5 christos /* First insn is HA, second is LO. */
9116 1.1.1.2 christos insn = *stub++;
9117 1.1.1.2 christos insn |= ((relocation + 0x8000) >> 16) & 0xffff;
9118 1.1 christos bfd_put_32 (input_bfd, insn, contents + insn_offset);
9119 1.1 christos insn_offset += 4;
9120 1.1 christos
9121 1.1 christos insn = *stub++;
9122 1.1 christos insn |= relocation & 0xffff;
9123 1.1.1.4 christos bfd_put_32 (input_bfd, insn, contents + insn_offset);
9124 1.1.1.4 christos insn_offset += 4;
9125 1.1.1.4 christos size -= 2;
9126 1.1.1.4 christos
9127 1.1.1.4 christos while (size != 0)
9128 1.1.1.4 christos {
9129 1.1.1.4 christos insn = *stub++;
9130 1.1 christos --size;
9131 1.1 christos bfd_put_32 (input_bfd, insn, contents + insn_offset);
9132 1.1 christos insn_offset += 4;
9133 1.1 christos }
9134 1.1 christos
9135 1.1 christos /* Rewrite the reloc and convert one of the trailing nop
9136 1.1 christos relocs to describe this relocation. */
9137 1.1 christos BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
9138 1.1 christos /* The relocs are at the bottom 2 bytes */
9139 1.1 christos wrel->r_offset = rel->r_offset + d_offset;
9140 1.1 christos wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
9141 1.1 christos wrel->r_addend = rel->r_addend;
9142 1.1 christos memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
9143 1.1 christos wrel++, rel++;
9144 1.1 christos wrel->r_offset += 4;
9145 1.1 christos wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
9146 1.1 christos }
9147 1.1 christos continue;
9148 1.1 christos
9149 1.1 christos /* Indirect .sdata relocation. */
9150 1.1 christos case R_PPC_EMB_SDAI16:
9151 1.1 christos BFD_ASSERT (htab->sdata[0].section != NULL);
9152 1.1 christos if (!is_static_defined (htab->sdata[0].sym))
9153 1.1 christos {
9154 1.1 christos unresolved_reloc = TRUE;
9155 1.1 christos break;
9156 1.1 christos }
9157 1.1 christos relocation
9158 1.1 christos = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
9159 1.1 christos h, relocation, rel);
9160 1.1 christos addend = 0;
9161 1.1 christos break;
9162 1.1 christos
9163 1.1 christos /* Indirect .sdata2 relocation. */
9164 1.1 christos case R_PPC_EMB_SDA2I16:
9165 1.1 christos BFD_ASSERT (htab->sdata[1].section != NULL);
9166 1.1 christos if (!is_static_defined (htab->sdata[1].sym))
9167 1.1 christos {
9168 1.1 christos unresolved_reloc = TRUE;
9169 1.1 christos break;
9170 1.1 christos }
9171 1.1 christos relocation
9172 1.1 christos = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
9173 1.1 christos h, relocation, rel);
9174 1.1 christos addend = 0;
9175 1.1 christos break;
9176 1.1 christos
9177 1.1 christos /* Handle the TOC16 reloc. We want to use the offset within the .got
9178 1.1 christos section, not the actual VMA. This is appropriate when generating
9179 1.1 christos an embedded ELF object, for which the .got section acts like the
9180 1.1 christos AIX .toc section. */
9181 1.1 christos case R_PPC_TOC16: /* phony GOT16 relocations */
9182 1.1.1.4 christos if (sec == NULL || sec->output_section == NULL)
9183 1.1.1.4 christos {
9184 1.1.1.4 christos unresolved_reloc = TRUE;
9185 1.1.1.4 christos break;
9186 1.1 christos }
9187 1.1.1.5 christos BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
9188 1.1 christos ".got") == 0
9189 1.1 christos || strcmp (bfd_get_section_name (sec->owner, sec),
9190 1.1 christos ".cgot") == 0);
9191 1.1 christos
9192 1.1 christos addend -= sec->output_section->vma + sec->output_offset + 0x8000;
9193 1.1 christos break;
9194 1.1 christos
9195 1.1 christos case R_PPC_PLTREL24:
9196 1.1 christos if (h != NULL && ifunc == NULL)
9197 1.1 christos {
9198 1.1 christos struct plt_entry *ent;
9199 1.1 christos
9200 1.1 christos ent = find_plt_ent (&h->plt.plist, got2,
9201 1.1 christos bfd_link_pic (info) ? addend : 0);
9202 1.1 christos if (ent == NULL
9203 1.1.1.5 christos || htab->elf.splt == NULL)
9204 1.1.1.5 christos {
9205 1.1 christos /* We didn't make a PLT entry for this symbol. This
9206 1.1 christos happens when statically linking PIC code, or when
9207 1.1 christos using -Bsymbolic. */
9208 1.1 christos }
9209 1.1 christos else
9210 1.1 christos {
9211 1.1 christos /* Relocation is to the entry for this symbol in the
9212 1.1 christos procedure linkage table. */
9213 1.1 christos unresolved_reloc = FALSE;
9214 1.1 christos if (htab->plt_type == PLT_NEW)
9215 1.1 christos relocation = (htab->glink->output_section->vma
9216 1.1 christos + htab->glink->output_offset
9217 1.1 christos + ent->glink_offset);
9218 1.1 christos else
9219 1.1 christos relocation = (htab->elf.splt->output_section->vma
9220 1.1 christos + htab->elf.splt->output_offset
9221 1.1 christos + ent->plt.offset);
9222 1.1 christos }
9223 1.1 christos }
9224 1.1 christos
9225 1.1 christos /* R_PPC_PLTREL24 is rather special. If non-zero, the
9226 1.1 christos addend specifies the GOT pointer offset within .got2.
9227 1.1 christos Don't apply it to the relocation field. */
9228 1.1 christos addend = 0;
9229 1.1 christos break;
9230 1.1 christos
9231 1.1.1.2 christos /* Relocate against _SDA_BASE_. */
9232 1.1.1.2 christos case R_PPC_SDAREL16:
9233 1.1 christos {
9234 1.1 christos const char *name;
9235 1.1.1.5 christos struct elf_link_hash_entry *sda = htab->sdata[0].sym;
9236 1.1 christos
9237 1.1 christos if (sec == NULL
9238 1.1 christos || sec->output_section == NULL
9239 1.1 christos || !is_static_defined (sda))
9240 1.1 christos {
9241 1.1 christos unresolved_reloc = TRUE;
9242 1.1 christos break;
9243 1.1 christos }
9244 1.1 christos addend -= SYM_VAL (sda);
9245 1.1 christos
9246 1.1 christos name = bfd_get_section_name (output_bfd, sec->output_section);
9247 1.1 christos if (!(strcmp (name, ".sdata") == 0
9248 1.1 christos || strcmp (name, ".sbss") == 0))
9249 1.1 christos {
9250 1.1 christos info->callbacks->einfo
9251 1.1 christos /* xgettext:c-format */
9252 1.1 christos (_("%P: %B: the target (%s) of a %s relocation is "
9253 1.1 christos "in the wrong output section (%s)\n"),
9254 1.1 christos input_bfd,
9255 1.1 christos sym_name,
9256 1.1 christos howto->name,
9257 1.1 christos name);
9258 1.1 christos }
9259 1.1 christos }
9260 1.1 christos break;
9261 1.1 christos
9262 1.1.1.2 christos /* Relocate against _SDA2_BASE_. */
9263 1.1.1.2 christos case R_PPC_EMB_SDA2REL:
9264 1.1 christos {
9265 1.1 christos const char *name;
9266 1.1.1.5 christos struct elf_link_hash_entry *sda = htab->sdata[1].sym;
9267 1.1 christos
9268 1.1 christos if (sec == NULL
9269 1.1 christos || sec->output_section == NULL
9270 1.1 christos || !is_static_defined (sda))
9271 1.1 christos {
9272 1.1 christos unresolved_reloc = TRUE;
9273 1.1 christos break;
9274 1.1 christos }
9275 1.1 christos addend -= SYM_VAL (sda);
9276 1.1 christos
9277 1.1 christos name = bfd_get_section_name (output_bfd, sec->output_section);
9278 1.1.1.2 christos if (!(strcmp (name, ".sdata2") == 0
9279 1.1.1.5 christos || strcmp (name, ".sbss2") == 0))
9280 1.1.1.5 christos {
9281 1.1.1.5 christos info->callbacks->einfo
9282 1.1.1.4 christos /* xgettext:c-format */
9283 1.1 christos (_("%P: %B: the target (%s) of a %s relocation is "
9284 1.1 christos "in the wrong output section (%s)\n"),
9285 1.1.1.2 christos input_bfd,
9286 1.1.1.5 christos sym_name,
9287 1.1.1.5 christos howto->name,
9288 1.1.1.5 christos name);
9289 1.1.1.4 christos }
9290 1.1 christos }
9291 1.1 christos break;
9292 1.1.1.2 christos
9293 1.1.1.5 christos case R_PPC_VLE_LO16A:
9294 1.1.1.5 christos relocation = relocation + addend;
9295 1.1.1.5 christos ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9296 1.1.1.4 christos contents + rel->r_offset, relocation,
9297 1.1 christos split16a_type, htab->params->vle_reloc_fixup);
9298 1.1 christos goto copy_reloc;
9299 1.1.1.2 christos
9300 1.1.1.5 christos case R_PPC_VLE_LO16D:
9301 1.1.1.5 christos relocation = relocation + addend;
9302 1.1.1.5 christos ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9303 1.1.1.4 christos contents + rel->r_offset, relocation,
9304 1.1 christos split16d_type, htab->params->vle_reloc_fixup);
9305 1.1 christos goto copy_reloc;
9306 1.1.1.2 christos
9307 1.1.1.5 christos case R_PPC_VLE_HI16A:
9308 1.1.1.5 christos relocation = (relocation + addend) >> 16;
9309 1.1.1.5 christos ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9310 1.1.1.4 christos contents + rel->r_offset, relocation,
9311 1.1 christos split16a_type, htab->params->vle_reloc_fixup);
9312 1.1 christos goto copy_reloc;
9313 1.1.1.2 christos
9314 1.1.1.5 christos case R_PPC_VLE_HI16D:
9315 1.1.1.5 christos relocation = (relocation + addend) >> 16;
9316 1.1.1.5 christos ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9317 1.1.1.4 christos contents + rel->r_offset, relocation,
9318 1.1 christos split16d_type, htab->params->vle_reloc_fixup);
9319 1.1 christos goto copy_reloc;
9320 1.1 christos
9321 1.1 christos case R_PPC_VLE_HA16A:
9322 1.1 christos relocation = (relocation + addend + 0x8000) >> 16;
9323 1.1 christos ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9324 1.1 christos contents + rel->r_offset, relocation,
9325 1.1 christos split16a_type, htab->params->vle_reloc_fixup);
9326 1.1 christos goto copy_reloc;
9327 1.1.1.2 christos
9328 1.1 christos case R_PPC_VLE_HA16D:
9329 1.1 christos relocation = (relocation + addend + 0x8000) >> 16;
9330 1.1 christos ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9331 1.1 christos contents + rel->r_offset, relocation,
9332 1.1 christos split16d_type, htab->params->vle_reloc_fixup);
9333 1.1 christos goto copy_reloc;
9334 1.1 christos
9335 1.1 christos /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9336 1.1 christos case R_PPC_EMB_SDA21:
9337 1.1.1.2 christos case R_PPC_VLE_SDA21:
9338 1.1.1.2 christos case R_PPC_EMB_RELSDA:
9339 1.1 christos case R_PPC_VLE_SDA21_LO:
9340 1.1 christos {
9341 1.1 christos const char *name;
9342 1.1 christos int reg;
9343 1.1.1.2 christos unsigned int insn;
9344 1.1.1.2 christos struct elf_link_hash_entry *sda = NULL;
9345 1.1 christos
9346 1.1 christos if (sec == NULL || sec->output_section == NULL)
9347 1.1 christos {
9348 1.1 christos unresolved_reloc = TRUE;
9349 1.1 christos break;
9350 1.1 christos }
9351 1.1 christos
9352 1.1 christos name = bfd_get_section_name (output_bfd, sec->output_section);
9353 1.1 christos if (strcmp (name, ".sdata") == 0
9354 1.1 christos || strcmp (name, ".sbss") == 0)
9355 1.1 christos {
9356 1.1 christos reg = 13;
9357 1.1.1.5 christos sda = htab->sdata[0].sym;
9358 1.1 christos }
9359 1.1 christos else if (strcmp (name, ".sdata2") == 0
9360 1.1 christos || strcmp (name, ".sbss2") == 0)
9361 1.1 christos {
9362 1.1 christos reg = 2;
9363 1.1 christos sda = htab->sdata[1].sym;
9364 1.1 christos }
9365 1.1 christos else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9366 1.1 christos || strcmp (name, ".PPC.EMB.sbss0") == 0)
9367 1.1.1.4 christos {
9368 1.1 christos reg = 0;
9369 1.1 christos }
9370 1.1 christos else
9371 1.1 christos {
9372 1.1 christos info->callbacks->einfo
9373 1.1 christos /* xgettext:c-format */
9374 1.1 christos (_("%P: %B: the target (%s) of a %s relocation is "
9375 1.1 christos "in the wrong output section (%s)\n"),
9376 1.1 christos input_bfd,
9377 1.1 christos sym_name,
9378 1.1 christos howto->name,
9379 1.1 christos name);
9380 1.1.1.5 christos
9381 1.1 christos bfd_set_error (bfd_error_bad_value);
9382 1.1 christos ret = FALSE;
9383 1.1 christos goto copy_reloc;
9384 1.1 christos }
9385 1.1.1.2 christos
9386 1.1.1.2 christos if (sda != NULL)
9387 1.1.1.2 christos {
9388 1.1.1.2 christos if (!is_static_defined (sda))
9389 1.1.1.2 christos {
9390 1.1.1.2 christos unresolved_reloc = TRUE;
9391 1.1.1.2 christos break;
9392 1.1.1.2 christos }
9393 1.1.1.2 christos addend -= SYM_VAL (sda);
9394 1.1.1.2 christos }
9395 1.1.1.2 christos
9396 1.1.1.2 christos insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9397 1.1.1.2 christos if (reg == 0
9398 1.1.1.2 christos && (r_type == R_PPC_VLE_SDA21
9399 1.1.1.2 christos || r_type == R_PPC_VLE_SDA21_LO))
9400 1.1.1.5 christos {
9401 1.1.1.2 christos relocation = relocation + addend;
9402 1.1.1.2 christos addend = 0;
9403 1.1.1.2 christos
9404 1.1.1.2 christos /* Force e_li insn, keeping RT from original insn. */
9405 1.1.1.4 christos insn &= 0x1f << 21;
9406 1.1 christos insn |= 28u << 26;
9407 1.1 christos
9408 1.1 christos /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9409 1.1 christos /* Top 4 bits of value to 17..20. */
9410 1.1 christos insn |= (relocation & 0xf0000) >> 5;
9411 1.1.1.2 christos /* Next 5 bits of the value to 11..15. */
9412 1.1 christos insn |= (relocation & 0xf800) << 5;
9413 1.1 christos /* And the final 11 bits of the value to bits 21 to 31. */
9414 1.1.1.5 christos insn |= relocation & 0x7ff;
9415 1.1 christos
9416 1.1 christos bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9417 1.1 christos
9418 1.1 christos if (r_type == R_PPC_VLE_SDA21
9419 1.1 christos && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9420 1.1 christos goto overflow;
9421 1.1 christos goto copy_reloc;
9422 1.1 christos }
9423 1.1 christos else if (r_type == R_PPC_EMB_SDA21
9424 1.1 christos || r_type == R_PPC_VLE_SDA21
9425 1.1 christos || r_type == R_PPC_VLE_SDA21_LO)
9426 1.1 christos {
9427 1.1 christos /* Fill in register field. */
9428 1.1 christos insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
9429 1.1 christos }
9430 1.1 christos bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9431 1.1 christos }
9432 1.1 christos break;
9433 1.1 christos
9434 1.1 christos case R_PPC_VLE_SDAREL_LO16A:
9435 1.1 christos case R_PPC_VLE_SDAREL_LO16D:
9436 1.1.1.2 christos case R_PPC_VLE_SDAREL_HI16A:
9437 1.1.1.2 christos case R_PPC_VLE_SDAREL_HI16D:
9438 1.1.1.5 christos case R_PPC_VLE_SDAREL_HA16A:
9439 1.1.1.2 christos case R_PPC_VLE_SDAREL_HA16D:
9440 1.1.1.2 christos {
9441 1.1.1.5 christos bfd_vma value;
9442 1.1 christos const char *name;
9443 1.1 christos struct elf_link_hash_entry *sda = NULL;
9444 1.1.1.5 christos
9445 1.1.1.5 christos if (sec == NULL || sec->output_section == NULL)
9446 1.1 christos {
9447 1.1 christos unresolved_reloc = TRUE;
9448 1.1 christos break;
9449 1.1 christos }
9450 1.1 christos
9451 1.1 christos name = bfd_get_section_name (output_bfd, sec->output_section);
9452 1.1 christos if (strcmp (name, ".sdata") == 0
9453 1.1 christos || strcmp (name, ".sbss") == 0)
9454 1.1 christos sda = htab->sdata[0].sym;
9455 1.1.1.4 christos else if (strcmp (name, ".sdata2") == 0
9456 1.1 christos || strcmp (name, ".sbss2") == 0)
9457 1.1 christos sda = htab->sdata[1].sym;
9458 1.1.1.5 christos else
9459 1.1 christos {
9460 1.1.1.5 christos _bfd_error_handler
9461 1.1.1.5 christos /* xgettext:c-format */
9462 1.1 christos (_("%B: the target (%s) of a %s relocation is "
9463 1.1.1.5 christos "in the wrong output section (%s)"),
9464 1.1.1.2 christos input_bfd,
9465 1.1.1.2 christos sym_name,
9466 1.1.1.5 christos howto->name,
9467 1.1.1.5 christos name);
9468 1.1.1.5 christos
9469 1.1.1.5 christos bfd_set_error (bfd_error_bad_value);
9470 1.1.1.2 christos ret = FALSE;
9471 1.1.1.5 christos goto copy_reloc;
9472 1.1.1.5 christos }
9473 1.1.1.5 christos
9474 1.1.1.5 christos if (sda == NULL || !is_static_defined (sda))
9475 1.1.1.2 christos {
9476 1.1.1.2 christos unresolved_reloc = TRUE;
9477 1.1.1.2 christos break;
9478 1.1.1.5 christos }
9479 1.1.1.5 christos value = relocation + addend - SYM_VAL (sda);
9480 1.1.1.5 christos
9481 1.1.1.5 christos if (r_type == R_PPC_VLE_SDAREL_LO16A)
9482 1.1.1.2 christos ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9483 1.1.1.2 christos contents + rel->r_offset, value,
9484 1.1.1.2 christos split16a_type,
9485 1.1.1.2 christos htab->params->vle_reloc_fixup);
9486 1.1.1.5 christos else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9487 1.1.1.5 christos ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9488 1.1.1.5 christos contents + rel->r_offset, value,
9489 1.1.1.5 christos split16d_type,
9490 1.1.1.2 christos htab->params->vle_reloc_fixup);
9491 1.1.1.2 christos else if (r_type == R_PPC_VLE_SDAREL_HI16A)
9492 1.1.1.2 christos {
9493 1.1.1.2 christos value = value >> 16;
9494 1.1.1.5 christos ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9495 1.1.1.5 christos contents + rel->r_offset, value,
9496 1.1.1.5 christos split16a_type,
9497 1.1.1.5 christos htab->params->vle_reloc_fixup);
9498 1.1.1.2 christos }
9499 1.1.1.2 christos else if (r_type == R_PPC_VLE_SDAREL_HI16D)
9500 1.1.1.2 christos {
9501 1.1.1.2 christos value = value >> 16;
9502 1.1.1.5 christos ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9503 1.1.1.5 christos contents + rel->r_offset, value,
9504 1.1.1.5 christos split16d_type,
9505 1.1.1.5 christos htab->params->vle_reloc_fixup);
9506 1.1 christos }
9507 1.1 christos else if (r_type == R_PPC_VLE_SDAREL_HA16A)
9508 1.1.1.4 christos {
9509 1.1 christos value = (value + 0x8000) >> 16;
9510 1.1 christos ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9511 1.1 christos contents + rel->r_offset, value,
9512 1.1 christos split16a_type,
9513 1.1 christos htab->params->vle_reloc_fixup);
9514 1.1 christos }
9515 1.1 christos else if (r_type == R_PPC_VLE_SDAREL_HA16D)
9516 1.1 christos {
9517 1.1 christos value = (value + 0x8000) >> 16;
9518 1.1 christos ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9519 1.1 christos contents + rel->r_offset, value,
9520 1.1 christos split16d_type,
9521 1.1 christos htab->params->vle_reloc_fixup);
9522 1.1 christos }
9523 1.1 christos }
9524 1.1 christos goto copy_reloc;
9525 1.1 christos
9526 1.1 christos /* Relocate against the beginning of the section. */
9527 1.1 christos case R_PPC_SECTOFF:
9528 1.1 christos case R_PPC_SECTOFF_LO:
9529 1.1 christos case R_PPC_SECTOFF_HI:
9530 1.1 christos case R_PPC_SECTOFF_HA:
9531 1.1 christos if (sec == NULL || sec->output_section == NULL)
9532 1.1 christos {
9533 1.1 christos unresolved_reloc = TRUE;
9534 1.1 christos break;
9535 1.1 christos }
9536 1.1 christos addend -= sec->output_section->vma;
9537 1.1 christos break;
9538 1.1 christos
9539 1.1 christos /* Negative relocations. */
9540 1.1 christos case R_PPC_EMB_NADDR32:
9541 1.1 christos case R_PPC_EMB_NADDR16:
9542 1.1 christos case R_PPC_EMB_NADDR16_LO:
9543 1.1 christos case R_PPC_EMB_NADDR16_HI:
9544 1.1 christos case R_PPC_EMB_NADDR16_HA:
9545 1.1 christos addend -= 2 * relocation;
9546 1.1 christos break;
9547 1.1 christos
9548 1.1 christos case R_PPC_COPY:
9549 1.1.1.5 christos case R_PPC_GLOB_DAT:
9550 1.1 christos case R_PPC_JMP_SLOT:
9551 1.1 christos case R_PPC_RELATIVE:
9552 1.1 christos case R_PPC_IRELATIVE:
9553 1.1 christos case R_PPC_PLT32:
9554 1.1 christos case R_PPC_PLTREL32:
9555 1.1 christos case R_PPC_PLT16_LO:
9556 1.1 christos case R_PPC_PLT16_HI:
9557 1.1.1.4 christos case R_PPC_PLT16_HA:
9558 1.1 christos case R_PPC_ADDR30:
9559 1.1 christos case R_PPC_EMB_RELSEC16:
9560 1.1 christos case R_PPC_EMB_RELST_LO:
9561 1.1 christos case R_PPC_EMB_RELST_HI:
9562 1.1 christos case R_PPC_EMB_RELST_HA:
9563 1.1 christos case R_PPC_EMB_BIT_FLD:
9564 1.1 christos info->callbacks->einfo
9565 1.1 christos /* xgettext:c-format */
9566 1.1 christos (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9567 1.1 christos input_bfd,
9568 1.1.1.4 christos howto->name,
9569 1.1 christos sym_name);
9570 1.1 christos
9571 1.1 christos bfd_set_error (bfd_error_invalid_operation);
9572 1.1 christos ret = FALSE;
9573 1.1 christos goto copy_reloc;
9574 1.1 christos }
9575 1.1 christos
9576 1.1 christos /* Do any further special processing. */
9577 1.1 christos switch (r_type)
9578 1.1 christos {
9579 1.1 christos default:
9580 1.1.1.5 christos break;
9581 1.1 christos
9582 1.1 christos case R_PPC_ADDR16_HA:
9583 1.1 christos case R_PPC_REL16_HA:
9584 1.1 christos case R_PPC_REL16DX_HA:
9585 1.1 christos case R_PPC_SECTOFF_HA:
9586 1.1 christos case R_PPC_TPREL16_HA:
9587 1.1 christos case R_PPC_DTPREL16_HA:
9588 1.1 christos case R_PPC_EMB_NADDR16_HA:
9589 1.1 christos case R_PPC_EMB_RELST_HA:
9590 1.1 christos /* It's just possible that this symbol is a weak symbol
9591 1.1 christos that's not actually defined anywhere. In that case,
9592 1.1 christos 'sec' would be NULL, and we should leave the symbol
9593 1.1 christos alone (it will be set to zero elsewhere in the link). */
9594 1.1 christos if (sec == NULL)
9595 1.1 christos break;
9596 1.1 christos /* Fall through. */
9597 1.1 christos
9598 1.1 christos case R_PPC_PLT16_HA:
9599 1.1 christos case R_PPC_GOT16_HA:
9600 1.1 christos case R_PPC_GOT_TLSGD16_HA:
9601 1.1 christos case R_PPC_GOT_TLSLD16_HA:
9602 1.1 christos case R_PPC_GOT_TPREL16_HA:
9603 1.1 christos case R_PPC_GOT_DTPREL16_HA:
9604 1.1 christos /* Add 0x10000 if sign bit in 0:15 is set.
9605 1.1 christos Bits 0:15 are not used. */
9606 1.1 christos addend += 0x8000;
9607 1.1 christos break;
9608 1.1 christos
9609 1.1 christos case R_PPC_ADDR16:
9610 1.1 christos case R_PPC_ADDR16_LO:
9611 1.1 christos case R_PPC_GOT16:
9612 1.1 christos case R_PPC_GOT16_LO:
9613 1.1 christos case R_PPC_SDAREL16:
9614 1.1 christos case R_PPC_SECTOFF:
9615 1.1 christos case R_PPC_SECTOFF_LO:
9616 1.1 christos case R_PPC_DTPREL16:
9617 1.1 christos case R_PPC_DTPREL16_LO:
9618 1.1.1.5 christos case R_PPC_TPREL16:
9619 1.1.1.4 christos case R_PPC_TPREL16_LO:
9620 1.1 christos case R_PPC_GOT_TLSGD16:
9621 1.1 christos case R_PPC_GOT_TLSGD16_LO:
9622 1.1 christos case R_PPC_GOT_TLSLD16:
9623 1.1 christos case R_PPC_GOT_TLSLD16_LO:
9624 1.1 christos case R_PPC_GOT_DTPREL16:
9625 1.1 christos case R_PPC_GOT_DTPREL16_LO:
9626 1.1 christos case R_PPC_GOT_TPREL16:
9627 1.1.1.4 christos case R_PPC_GOT_TPREL16_LO:
9628 1.1.1.4 christos {
9629 1.1.1.4 christos /* The 32-bit ABI lacks proper relocations to deal with
9630 1.1 christos certain 64-bit instructions. Prevent damage to bits
9631 1.1 christos that make up part of the insn opcode. */
9632 1.1.1.4 christos unsigned int insn, mask, lobit;
9633 1.1 christos
9634 1.1.1.5 christos insn = bfd_get_32 (input_bfd,
9635 1.1.1.5 christos contents + rel->r_offset - d_offset);
9636 1.1 christos mask = 0;
9637 1.1 christos if (is_insn_ds_form (insn))
9638 1.1 christos mask = 3;
9639 1.1 christos else if (is_insn_dq_form (insn))
9640 1.1 christos mask = 15;
9641 1.1 christos else
9642 1.1 christos break;
9643 1.1 christos relocation += addend;
9644 1.1 christos addend = insn & mask;
9645 1.1 christos lobit = mask & relocation;
9646 1.1 christos if (lobit != 0)
9647 1.1 christos {
9648 1.1 christos relocation ^= lobit;
9649 1.1 christos info->callbacks->einfo
9650 1.1 christos /* xgettext:c-format */
9651 1.1 christos (_("%H: error: %s against `%s' not a multiple of %u\n"),
9652 1.1 christos input_bfd, input_section, rel->r_offset,
9653 1.1 christos howto->name, sym_name, mask + 1);
9654 1.1 christos bfd_set_error (bfd_error_bad_value);
9655 1.1 christos ret = FALSE;
9656 1.1 christos }
9657 1.1 christos }
9658 1.1 christos break;
9659 1.1 christos }
9660 1.1 christos
9661 1.1 christos #ifdef DEBUG
9662 1.1 christos fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9663 1.1.1.5 christos "offset = %ld, addend = %ld\n",
9664 1.1.1.5 christos howto->name,
9665 1.1 christos (int) r_type,
9666 1.1 christos sym_name,
9667 1.1 christos r_symndx,
9668 1.1 christos (long) rel->r_offset,
9669 1.1 christos (long) addend);
9670 1.1 christos #endif
9671 1.1.1.2 christos
9672 1.1.1.2 christos if (unresolved_reloc
9673 1.1.1.2 christos && !((input_section->flags & SEC_DEBUGGING) != 0
9674 1.1.1.2 christos && h->def_dynamic)
9675 1.1.1.2 christos && _bfd_elf_section_offset (output_bfd, info, input_section,
9676 1.1.1.2 christos rel->r_offset) != (bfd_vma) -1)
9677 1.1.1.2 christos {
9678 1.1.1.2 christos info->callbacks->einfo
9679 1.1.1.2 christos /* xgettext:c-format */
9680 1.1.1.2 christos (_("%H: unresolvable %s relocation against symbol `%s'\n"),
9681 1.1.1.2 christos input_bfd, input_section, rel->r_offset,
9682 1.1.1.2 christos howto->name,
9683 1.1.1.2 christos sym_name);
9684 1.1.1.2 christos ret = FALSE;
9685 1.1.1.2 christos }
9686 1.1.1.2 christos
9687 1.1.1.2 christos /* 16-bit fields in insns mostly have signed values, but a
9688 1.1.1.2 christos few insns have 16-bit unsigned values. Really, we should
9689 1.1.1.2 christos have different reloc types. */
9690 1.1.1.2 christos if (howto->complain_on_overflow != complain_overflow_dont
9691 1.1.1.2 christos && howto->dst_mask == 0xffff
9692 1.1.1.2 christos && (input_section->flags & SEC_CODE) != 0)
9693 1.1.1.2 christos {
9694 1.1.1.2 christos enum complain_overflow complain = complain_overflow_signed;
9695 1.1.1.2 christos
9696 1.1.1.2 christos if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9697 1.1.1.2 christos {
9698 1.1.1.2 christos unsigned int insn;
9699 1.1.1.2 christos
9700 1.1.1.4 christos insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9701 1.1.1.4 christos if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9702 1.1.1.4 christos complain = complain_overflow_bitfield;
9703 1.1.1.4 christos else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9704 1.1.1.4 christos || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9705 1.1.1.4 christos || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
9706 1.1.1.4 christos complain = complain_overflow_unsigned;
9707 1.1.1.4 christos }
9708 1.1.1.4 christos if (howto->complain_on_overflow != complain)
9709 1.1.1.4 christos {
9710 1.1.1.4 christos alt_howto = *howto;
9711 1.1.1.4 christos alt_howto.complain_on_overflow = complain;
9712 1.1.1.4 christos howto = &alt_howto;
9713 1.1.1.4 christos }
9714 1.1.1.4 christos }
9715 1.1.1.4 christos
9716 1.1.1.4 christos if (r_type == R_PPC_REL16DX_HA)
9717 1.1.1.4 christos {
9718 1.1.1.4 christos /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9719 1.1.1.4 christos if (rel->r_offset + 4 > input_section->size)
9720 1.1.1.4 christos r = bfd_reloc_outofrange;
9721 1.1.1.4 christos else
9722 1.1.1.4 christos {
9723 1.1.1.4 christos unsigned int insn;
9724 1.1 christos
9725 1.1 christos relocation += addend;
9726 1.1 christos relocation -= (rel->r_offset
9727 1.1 christos + input_section->output_offset
9728 1.1 christos + input_section->output_section->vma);
9729 1.1.1.2 christos relocation >>= 16;
9730 1.1.1.3 christos insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9731 1.1.1.3 christos insn &= ~0x1fffc1;
9732 1.1.1.3 christos insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
9733 1.1.1.3 christos bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9734 1.1.1.3 christos r = bfd_reloc_ok;
9735 1.1.1.3 christos }
9736 1.1.1.3 christos }
9737 1.1.1.4 christos else
9738 1.1.1.4 christos r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9739 1.1.1.4 christos rel->r_offset, relocation, addend);
9740 1.1 christos
9741 1.1 christos if (r != bfd_reloc_ok)
9742 1.1 christos {
9743 1.1 christos if (r == bfd_reloc_overflow)
9744 1.1.1.5 christos {
9745 1.1.1.5 christos overflow:
9746 1.1 christos /* On code like "if (foo) foo();" don't report overflow
9747 1.1 christos on a branch to zero when foo is undefined. */
9748 1.1 christos if (!warned
9749 1.1 christos && !(h != NULL
9750 1.1 christos && (h->root.type == bfd_link_hash_undefweak
9751 1.1.1.4 christos || h->root.type == bfd_link_hash_undefined)
9752 1.1.1.4 christos && is_branch_reloc (r_type)))
9753 1.1.1.4 christos info->callbacks->reloc_overflow
9754 1.1.1.4 christos (info, (h ? &h->root : NULL), sym_name, howto->name,
9755 1.1.1.4 christos rel->r_addend, input_bfd, input_section, rel->r_offset);
9756 1.1.1.4 christos }
9757 1.1.1.4 christos else
9758 1.1.1.4 christos {
9759 1.1.1.4 christos info->callbacks->einfo
9760 1.1.1.4 christos /* xgettext:c-format */
9761 1.1.1.4 christos (_("%H: %s reloc against `%s': error %d\n"),
9762 1.1.1.4 christos input_bfd, input_section, rel->r_offset,
9763 1.1.1.4 christos howto->name, sym_name, (int) r);
9764 1.1.1.4 christos ret = FALSE;
9765 1.1.1.4 christos }
9766 1.1.1.4 christos }
9767 1.1.1.4 christos copy_reloc:
9768 1.1.1.4 christos if (wrel != rel)
9769 1.1.1.4 christos *wrel = *rel;
9770 1.1.1.4 christos }
9771 1.1.1.4 christos
9772 1.1.1.4 christos if (wrel != rel)
9773 1.1.1.4 christos {
9774 1.1.1.4 christos Elf_Internal_Shdr *rel_hdr;
9775 1.1.1.4 christos size_t deleted = rel - wrel;
9776 1.1 christos
9777 1.1 christos rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
9778 1.1 christos rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9779 1.1 christos if (rel_hdr->sh_size == 0)
9780 1.1 christos {
9781 1.1 christos /* It is too late to remove an empty reloc section. Leave
9782 1.1.1.2 christos one NONE reloc.
9783 1.1.1.2 christos ??? What is wrong with an empty section??? */
9784 1.1.1.2 christos rel_hdr->sh_size = rel_hdr->sh_entsize;
9785 1.1.1.2 christos deleted -= 1;
9786 1.1.1.2 christos wrel++;
9787 1.1.1.2 christos }
9788 1.1.1.2 christos relend = wrel;
9789 1.1.1.2 christos rel_hdr = _bfd_elf_single_rel_hdr (input_section);
9790 1.1.1.2 christos rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9791 1.1.1.2 christos input_section->reloc_count -= deleted;
9792 1.1.1.2 christos }
9793 1.1.1.2 christos
9794 1.1.1.4 christos #ifdef DEBUG
9795 1.1.1.2 christos fprintf (stderr, "\n");
9796 1.1.1.2 christos #endif
9797 1.1.1.2 christos
9798 1.1.1.2 christos if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9799 1.1.1.2 christos && input_section->size != input_section->rawsize
9800 1.1.1.2 christos && (strcmp (input_section->output_section->name, ".init") == 0
9801 1.1.1.2 christos || strcmp (input_section->output_section->name, ".fini") == 0))
9802 1.1.1.2 christos {
9803 1.1.1.2 christos /* Branch around the trampolines. */
9804 1.1.1.2 christos unsigned int insn = B + input_section->size - input_section->rawsize;
9805 1.1.1.2 christos bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9806 1.1.1.2 christos }
9807 1.1.1.2 christos
9808 1.1.1.2 christos if (htab->params->ppc476_workaround
9809 1.1.1.2 christos && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9810 1.1.1.2 christos && (!bfd_link_relocatable (info)
9811 1.1.1.2 christos || (input_section->output_section->alignment_power
9812 1.1.1.2 christos >= htab->params->pagesize_p2)))
9813 1.1.1.2 christos {
9814 1.1.1.2 christos bfd_vma start_addr, end_addr, addr;
9815 1.1.1.2 christos bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9816 1.1.1.2 christos
9817 1.1.1.2 christos if (relax_info->workaround_size != 0)
9818 1.1.1.2 christos {
9819 1.1.1.2 christos bfd_byte *p;
9820 1.1.1.2 christos unsigned int n;
9821 1.1.1.2 christos bfd_byte fill[4];
9822 1.1.1.2 christos
9823 1.1.1.2 christos bfd_put_32 (input_bfd, BA, fill);
9824 1.1.1.2 christos p = contents + input_section->size - relax_info->workaround_size;
9825 1.1.1.2 christos n = relax_info->workaround_size >> 2;
9826 1.1.1.2 christos while (n--)
9827 1.1.1.2 christos {
9828 1.1.1.2 christos memcpy (p, fill, 4);
9829 1.1.1.2 christos p += 4;
9830 1.1.1.2 christos }
9831 1.1.1.2 christos }
9832 1.1.1.2 christos
9833 1.1.1.2 christos /* The idea is: Replace the last instruction on a page with a
9834 1.1.1.2 christos branch to a patch area. Put the insn there followed by a
9835 1.1.1.2 christos branch back to the next page. Complicated a little by
9836 1.1.1.2 christos needing to handle moved conditional branches, and by not
9837 1.1.1.2 christos wanting to touch data-in-text. */
9838 1.1.1.2 christos
9839 1.1.1.2 christos start_addr = (input_section->output_section->vma
9840 1.1.1.2 christos + input_section->output_offset);
9841 1.1.1.2 christos end_addr = (start_addr + input_section->size
9842 1.1.1.2 christos - relax_info->workaround_size);
9843 1.1.1.2 christos for (addr = ((start_addr & -pagesize) + pagesize - 4);
9844 1.1.1.2 christos addr < end_addr;
9845 1.1.1.2 christos addr += pagesize)
9846 1.1.1.2 christos {
9847 1.1.1.2 christos bfd_vma offset = addr - start_addr;
9848 1.1.1.2 christos Elf_Internal_Rela *lo, *hi;
9849 1.1.1.2 christos bfd_boolean is_data;
9850 1.1.1.2 christos bfd_vma patch_off, patch_addr;
9851 1.1.1.2 christos unsigned int insn;
9852 1.1.1.2 christos
9853 1.1.1.2 christos /* Do we have a data reloc at this offset? If so, leave
9854 1.1.1.2 christos the word alone. */
9855 1.1.1.2 christos is_data = FALSE;
9856 1.1.1.2 christos lo = relocs;
9857 1.1.1.2 christos hi = relend;
9858 1.1.1.2 christos rel = NULL;
9859 1.1.1.2 christos while (lo < hi)
9860 1.1.1.2 christos {
9861 1.1.1.2 christos rel = lo + (hi - lo) / 2;
9862 1.1.1.2 christos if (rel->r_offset < offset)
9863 1.1.1.2 christos lo = rel + 1;
9864 1.1.1.2 christos else if (rel->r_offset > offset + 3)
9865 1.1.1.2 christos hi = rel;
9866 1.1.1.2 christos else
9867 1.1.1.2 christos {
9868 1.1.1.2 christos switch (ELF32_R_TYPE (rel->r_info))
9869 1.1.1.2 christos {
9870 1.1.1.2 christos case R_PPC_ADDR32:
9871 1.1.1.2 christos case R_PPC_UADDR32:
9872 1.1.1.2 christos case R_PPC_REL32:
9873 1.1.1.2 christos case R_PPC_ADDR30:
9874 1.1.1.2 christos is_data = TRUE;
9875 1.1.1.2 christos break;
9876 1.1.1.2 christos default:
9877 1.1.1.2 christos break;
9878 1.1.1.2 christos }
9879 1.1.1.2 christos break;
9880 1.1.1.2 christos }
9881 1.1.1.2 christos }
9882 1.1.1.2 christos if (is_data)
9883 1.1.1.2 christos continue;
9884 1.1.1.2 christos
9885 1.1.1.2 christos /* Some instructions can be left alone too. Unconditional
9886 1.1.1.2 christos branches, except for bcctr with BO=0x14 (bctr, bctrl),
9887 1.1.1.2 christos avoid the icache failure.
9888 1.1.1.2 christos
9889 1.1.1.2 christos The problem occurs due to prefetch across a page boundary
9890 1.1.1.2 christos where stale instructions can be fetched from the next
9891 1.1.1.2 christos page, and the mechanism for flushing these bad
9892 1.1.1.2 christos instructions fails under certain circumstances. The
9893 1.1.1.2 christos unconditional branches:
9894 1.1.1.2 christos 1) Branch: b, bl, ba, bla,
9895 1.1.1.2 christos 2) Branch Conditional: bc, bca, bcl, bcla,
9896 1.1.1.2 christos 3) Branch Conditional to Link Register: bclr, bclrl,
9897 1.1.1.2 christos where (2) and (3) have BO=0x14 making them unconditional,
9898 1.1.1.2 christos prevent the bad prefetch because the prefetch itself is
9899 1.1.1.2 christos affected by these instructions. This happens even if the
9900 1.1.1.2 christos instruction is not executed.
9901 1.1.1.2 christos
9902 1.1.1.2 christos A bctr example:
9903 1.1.1.2 christos .
9904 1.1.1.4 christos . lis 9,new_page@ha
9905 1.1.1.4 christos . addi 9,9,new_page@l
9906 1.1.1.4 christos . mtctr 9
9907 1.1.1.4 christos . bctr
9908 1.1.1.2 christos . nop
9909 1.1.1.4 christos . nop
9910 1.1.1.4 christos . new_page:
9911 1.1.1.2 christos .
9912 1.1.1.2 christos The bctr is not predicted taken due to ctr not being
9913 1.1.1.2 christos ready, so prefetch continues on past the bctr into the
9914 1.1.1.2 christos new page which might have stale instructions. If they
9915 1.1.1.2 christos fail to be flushed, then they will be executed after the
9916 1.1.1.2 christos bctr executes. Either of the following modifications
9917 1.1.1.2 christos prevent the bad prefetch from happening in the first
9918 1.1.1.2 christos place:
9919 1.1.1.2 christos .
9920 1.1.1.2 christos . lis 9,new_page@ha lis 9,new_page@ha
9921 1.1.1.2 christos . addi 9,9,new_page@l addi 9,9,new_page@l
9922 1.1.1.2 christos . mtctr 9 mtctr 9
9923 1.1.1.2 christos . bctr bctr
9924 1.1.1.2 christos . nop b somewhere_else
9925 1.1.1.2 christos . b somewhere_else nop
9926 1.1.1.2 christos . new_page: new_page:
9927 1.1.1.2 christos . */
9928 1.1.1.2 christos insn = bfd_get_32 (input_bfd, contents + offset);
9929 1.1.1.2 christos if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9930 1.1.1.2 christos || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9931 1.1.1.3 christos && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9932 1.1.1.3 christos || ((insn & (0x3f << 26)) == (19u << 26)
9933 1.1.1.2 christos && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9934 1.1.1.2 christos && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9935 1.1.1.2 christos continue;
9936 1.1.1.2 christos
9937 1.1.1.2 christos patch_addr = (start_addr + input_section->size
9938 1.1.1.2 christos - relax_info->workaround_size);
9939 1.1.1.2 christos patch_addr = (patch_addr + 15) & -16;
9940 1.1.1.2 christos patch_off = patch_addr - start_addr;
9941 1.1.1.2 christos bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9942 1.1.1.2 christos
9943 1.1.1.2 christos if (rel != NULL
9944 1.1.1.2 christos && rel->r_offset >= offset
9945 1.1.1.3 christos && rel->r_offset < offset + 4)
9946 1.1.1.3 christos {
9947 1.1.1.3 christos asection *sreloc;
9948 1.1.1.3 christos
9949 1.1.1.3 christos /* If the insn we are patching had a reloc, adjust the
9950 1.1.1.3 christos reloc r_offset so that the reloc applies to the moved
9951 1.1.1.3 christos location. This matters for -r and --emit-relocs. */
9952 1.1.1.3 christos if (rel + 1 != relend)
9953 1.1.1.3 christos {
9954 1.1.1.3 christos Elf_Internal_Rela tmp = *rel;
9955 1.1.1.3 christos
9956 1.1.1.3 christos /* Keep the relocs sorted by r_offset. */
9957 1.1.1.3 christos memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9958 1.1.1.3 christos relend[-1] = tmp;
9959 1.1.1.3 christos }
9960 1.1.1.3 christos relend[-1].r_offset += patch_off - offset;
9961 1.1.1.3 christos
9962 1.1.1.3 christos /* Adjust REL16 addends too. */
9963 1.1.1.3 christos switch (ELF32_R_TYPE (relend[-1].r_info))
9964 1.1.1.3 christos {
9965 1.1.1.3 christos case R_PPC_REL16:
9966 1.1.1.3 christos case R_PPC_REL16_LO:
9967 1.1.1.3 christos case R_PPC_REL16_HI:
9968 1.1.1.3 christos case R_PPC_REL16_HA:
9969 1.1.1.3 christos relend[-1].r_addend += patch_off - offset;
9970 1.1.1.3 christos break;
9971 1.1.1.3 christos default:
9972 1.1.1.3 christos break;
9973 1.1.1.3 christos }
9974 1.1.1.3 christos
9975 1.1.1.3 christos /* If we are building a PIE or shared library with
9976 1.1.1.3 christos non-PIC objects, perhaps we had a dynamic reloc too?
9977 1.1.1.3 christos If so, the dynamic reloc must move with the insn. */
9978 1.1.1.3 christos sreloc = elf_section_data (input_section)->sreloc;
9979 1.1.1.3 christos if (sreloc != NULL)
9980 1.1.1.3 christos {
9981 1.1.1.3 christos Elf32_External_Rela *slo, *shi, *srelend;
9982 1.1.1.3 christos bfd_vma soffset;
9983 1.1.1.3 christos
9984 1.1.1.3 christos slo = (Elf32_External_Rela *) sreloc->contents;
9985 1.1.1.3 christos shi = srelend = slo + sreloc->reloc_count;
9986 1.1.1.3 christos soffset = (offset + input_section->output_section->vma
9987 1.1.1.3 christos + input_section->output_offset);
9988 1.1.1.3 christos while (slo < shi)
9989 1.1.1.3 christos {
9990 1.1.1.3 christos Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9991 1.1.1.3 christos bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9992 1.1.1.3 christos &outrel);
9993 1.1.1.3 christos if (outrel.r_offset < soffset)
9994 1.1.1.3 christos slo = srel + 1;
9995 1.1.1.3 christos else if (outrel.r_offset > soffset + 3)
9996 1.1.1.2 christos shi = srel;
9997 1.1.1.2 christos else
9998 1.1.1.2 christos {
9999 1.1.1.2 christos if (srel + 1 != srelend)
10000 1.1.1.2 christos {
10001 1.1.1.2 christos memmove (srel, srel + 1,
10002 1.1.1.2 christos (srelend - (srel + 1)) * sizeof (*srel));
10003 1.1.1.2 christos srel = srelend - 1;
10004 1.1.1.2 christos }
10005 1.1.1.2 christos outrel.r_offset += patch_off - offset;
10006 1.1.1.4 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel,
10007 1.1.1.2 christos (bfd_byte *) srel);
10008 1.1.1.4 christos break;
10009 1.1.1.2 christos }
10010 1.1.1.2 christos }
10011 1.1.1.2 christos }
10012 1.1.1.2 christos }
10013 1.1.1.2 christos else
10014 1.1.1.2 christos rel = NULL;
10015 1.1.1.2 christos
10016 1.1.1.2 christos if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
10017 1.1.1.2 christos && (insn & 2) == 0 /* relative */)
10018 1.1.1.2 christos {
10019 1.1.1.2 christos bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
10020 1.1.1.2 christos
10021 1.1.1.2 christos delta += offset - patch_off;
10022 1.1.1.2 christos if (bfd_link_relocatable (info) && rel != NULL)
10023 1.1.1.2 christos delta = 0;
10024 1.1.1.2 christos if (!bfd_link_relocatable (info) && rel != NULL)
10025 1.1.1.2 christos {
10026 1.1.1.2 christos enum elf_ppc_reloc_type r_type;
10027 1.1.1.2 christos
10028 1.1.1.2 christos r_type = ELF32_R_TYPE (relend[-1].r_info);
10029 1.1.1.2 christos if (r_type == R_PPC_REL14_BRTAKEN)
10030 1.1.1.2 christos insn |= BRANCH_PREDICT_BIT;
10031 1.1.1.2 christos else if (r_type == R_PPC_REL14_BRNTAKEN)
10032 1.1.1.2 christos insn &= ~BRANCH_PREDICT_BIT;
10033 1.1.1.2 christos else
10034 1.1.1.2 christos BFD_ASSERT (r_type == R_PPC_REL14);
10035 1.1.1.2 christos
10036 1.1.1.2 christos if ((r_type == R_PPC_REL14_BRTAKEN
10037 1.1.1.2 christos || r_type == R_PPC_REL14_BRNTAKEN)
10038 1.1.1.2 christos && delta + 0x8000 < 0x10000
10039 1.1.1.2 christos && (bfd_signed_vma) delta < 0)
10040 1.1.1.2 christos insn ^= BRANCH_PREDICT_BIT;
10041 1.1.1.2 christos }
10042 1.1.1.2 christos if (delta + 0x8000 < 0x10000)
10043 1.1.1.2 christos {
10044 1.1.1.2 christos bfd_put_32 (input_bfd,
10045 1.1.1.2 christos (insn & ~0xfffc) | (delta & 0xfffc),
10046 1.1.1.2 christos contents + patch_off);
10047 1.1.1.2 christos patch_off += 4;
10048 1.1.1.2 christos bfd_put_32 (input_bfd,
10049 1.1.1.2 christos B | ((offset + 4 - patch_off) & 0x3fffffc),
10050 1.1.1.2 christos contents + patch_off);
10051 1.1.1.2 christos patch_off += 4;
10052 1.1.1.2 christos }
10053 1.1.1.2 christos else
10054 1.1.1.2 christos {
10055 1.1.1.2 christos if (rel != NULL)
10056 1.1.1.2 christos {
10057 1.1.1.2 christos unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
10058 1.1.1.2 christos
10059 1.1.1.2 christos relend[-1].r_offset += 8;
10060 1.1.1.2 christos relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
10061 1.1.1.2 christos }
10062 1.1.1.2 christos bfd_put_32 (input_bfd,
10063 1.1.1.2 christos (insn & ~0xfffc) | 8,
10064 1.1.1.2 christos contents + patch_off);
10065 1.1.1.2 christos patch_off += 4;
10066 1.1.1.2 christos bfd_put_32 (input_bfd,
10067 1.1.1.2 christos B | ((offset + 4 - patch_off) & 0x3fffffc),
10068 1.1.1.2 christos contents + patch_off);
10069 1.1.1.2 christos patch_off += 4;
10070 1.1.1.2 christos bfd_put_32 (input_bfd,
10071 1.1.1.2 christos B | ((delta - 8) & 0x3fffffc),
10072 1.1.1.2 christos contents + patch_off);
10073 1.1.1.2 christos patch_off += 4;
10074 1.1 christos }
10075 1.1 christos }
10076 1.1 christos else
10077 1.1 christos {
10078 1.1 christos bfd_put_32 (input_bfd, insn, contents + patch_off);
10079 1.1 christos patch_off += 4;
10080 1.1 christos bfd_put_32 (input_bfd,
10081 1.1 christos B | ((offset + 4 - patch_off) & 0x3fffffc),
10082 1.1 christos contents + patch_off);
10083 1.1 christos patch_off += 4;
10084 1.1 christos }
10085 1.1 christos BFD_ASSERT (patch_off <= input_section->size);
10086 1.1 christos relax_info->workaround_size = input_section->size - patch_off;
10087 1.1 christos }
10088 1.1 christos }
10089 1.1 christos
10090 1.1 christos return ret;
10091 1.1 christos }
10092 1.1 christos
10093 1.1 christos /* Finish up dynamic symbol handling. We set the contents of various
10095 1.1 christos dynamic sections here. */
10096 1.1 christos
10097 1.1 christos static bfd_boolean
10098 1.1 christos ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
10099 1.1 christos struct bfd_link_info *info,
10100 1.1 christos struct elf_link_hash_entry *h,
10101 1.1 christos Elf_Internal_Sym *sym)
10102 1.1 christos {
10103 1.1 christos struct ppc_elf_link_hash_table *htab;
10104 1.1 christos struct plt_entry *ent;
10105 1.1 christos bfd_boolean doneone;
10106 1.1 christos
10107 1.1 christos #ifdef DEBUG
10108 1.1 christos fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
10109 1.1 christos h->root.root.string);
10110 1.1 christos #endif
10111 1.1 christos
10112 1.1 christos htab = ppc_elf_hash_table (info);
10113 1.1 christos BFD_ASSERT (htab->elf.dynobj != NULL);
10114 1.1 christos
10115 1.1 christos doneone = FALSE;
10116 1.1 christos for (ent = h->plt.plist; ent != NULL; ent = ent->next)
10117 1.1 christos if (ent->plt.offset != (bfd_vma) -1)
10118 1.1 christos {
10119 1.1 christos if (!doneone)
10120 1.1 christos {
10121 1.1 christos Elf_Internal_Rela rela;
10122 1.1 christos bfd_byte *loc;
10123 1.1 christos bfd_vma reloc_index;
10124 1.1 christos
10125 1.1 christos if (htab->plt_type == PLT_NEW
10126 1.1 christos || !htab->elf.dynamic_sections_created
10127 1.1 christos || h->dynindx == -1)
10128 1.1 christos reloc_index = ent->plt.offset / 4;
10129 1.1 christos else
10130 1.1 christos {
10131 1.1 christos reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
10132 1.1 christos / htab->plt_slot_size);
10133 1.1 christos if (reloc_index > PLT_NUM_SINGLE_ENTRIES
10134 1.1.1.4 christos && htab->plt_type == PLT_OLD)
10135 1.1 christos reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
10136 1.1 christos }
10137 1.1 christos
10138 1.1.1.4 christos /* This symbol has an entry in the procedure linkage table.
10139 1.1 christos Set it up. */
10140 1.1 christos if (htab->plt_type == PLT_VXWORKS
10141 1.1 christos && htab->elf.dynamic_sections_created
10142 1.1.1.5 christos && h->dynindx != -1)
10143 1.1 christos {
10144 1.1 christos bfd_vma got_offset;
10145 1.1.1.5 christos const bfd_vma *plt_entry;
10146 1.1 christos
10147 1.1 christos /* The first three entries in .got.plt are reserved. */
10148 1.1 christos got_offset = (reloc_index + 3) * 4;
10149 1.1 christos
10150 1.1 christos /* Use the right PLT. */
10151 1.1 christos plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
10152 1.1 christos : ppc_elf_vxworks_plt_entry;
10153 1.1.1.5 christos
10154 1.1 christos /* Fill in the .plt on VxWorks. */
10155 1.1 christos if (bfd_link_pic (info))
10156 1.1.1.5 christos {
10157 1.1 christos bfd_put_32 (output_bfd,
10158 1.1 christos plt_entry[0] | PPC_HA (got_offset),
10159 1.1 christos htab->elf.splt->contents + ent->plt.offset + 0);
10160 1.1.1.5 christos bfd_put_32 (output_bfd,
10161 1.1 christos plt_entry[1] | PPC_LO (got_offset),
10162 1.1.1.5 christos htab->elf.splt->contents + ent->plt.offset + 4);
10163 1.1 christos }
10164 1.1 christos else
10165 1.1 christos {
10166 1.1 christos bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
10167 1.1 christos
10168 1.1 christos bfd_put_32 (output_bfd,
10169 1.1 christos plt_entry[0] | PPC_HA (got_loc),
10170 1.1 christos htab->elf.splt->contents + ent->plt.offset + 0);
10171 1.1 christos bfd_put_32 (output_bfd,
10172 1.1.1.5 christos plt_entry[1] | PPC_LO (got_loc),
10173 1.1 christos htab->elf.splt->contents + ent->plt.offset + 4);
10174 1.1 christos }
10175 1.1 christos
10176 1.1 christos bfd_put_32 (output_bfd, plt_entry[2],
10177 1.1 christos htab->elf.splt->contents + ent->plt.offset + 8);
10178 1.1 christos bfd_put_32 (output_bfd, plt_entry[3],
10179 1.1 christos htab->elf.splt->contents + ent->plt.offset + 12);
10180 1.1 christos
10181 1.1 christos /* This instruction is an immediate load. The value loaded is
10182 1.1.1.5 christos the byte offset of the R_PPC_JMP_SLOT relocation from the
10183 1.1 christos start of the .rela.plt section. The value is stored in the
10184 1.1.1.5 christos low-order 16 bits of the load instruction. */
10185 1.1 christos /* NOTE: It appears that this is now an index rather than a
10186 1.1.1.5 christos prescaled offset. */
10187 1.1 christos bfd_put_32 (output_bfd,
10188 1.1 christos plt_entry[4] | reloc_index,
10189 1.1 christos htab->elf.splt->contents + ent->plt.offset + 16);
10190 1.1 christos /* This instruction is a PC-relative branch whose target is
10191 1.1.1.5 christos the start of the PLT section. The address of this branch
10192 1.1.1.5 christos instruction is 20 bytes beyond the start of this PLT entry.
10193 1.1 christos The address is encoded in bits 6-29, inclusive. The value
10194 1.1.1.5 christos stored is right-shifted by two bits, permitting a 26-bit
10195 1.1 christos offset. */
10196 1.1.1.4 christos bfd_put_32 (output_bfd,
10197 1.1 christos (plt_entry[5]
10198 1.1 christos | (-(ent->plt.offset + 20) & 0x03fffffc)),
10199 1.1 christos htab->elf.splt->contents + ent->plt.offset + 20);
10200 1.1 christos bfd_put_32 (output_bfd, plt_entry[6],
10201 1.1 christos htab->elf.splt->contents + ent->plt.offset + 24);
10202 1.1 christos bfd_put_32 (output_bfd, plt_entry[7],
10203 1.1 christos htab->elf.splt->contents + ent->plt.offset + 28);
10204 1.1 christos
10205 1.1.1.5 christos /* Fill in the GOT entry corresponding to this PLT slot with
10206 1.1.1.5 christos the address immediately after the "bctr" instruction
10207 1.1 christos in this PLT entry. */
10208 1.1 christos bfd_put_32 (output_bfd, (htab->elf.splt->output_section->vma
10209 1.1 christos + htab->elf.splt->output_offset
10210 1.1 christos + ent->plt.offset + 16),
10211 1.1 christos htab->elf.sgotplt->contents + got_offset);
10212 1.1 christos
10213 1.1 christos if (!bfd_link_pic (info))
10214 1.1 christos {
10215 1.1.1.5 christos /* Fill in a couple of entries in .rela.plt.unloaded. */
10216 1.1.1.5 christos loc = htab->srelplt2->contents
10217 1.1 christos + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
10218 1.1 christos * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
10219 1.1 christos * sizeof (Elf32_External_Rela));
10220 1.1 christos
10221 1.1 christos /* Provide the @ha relocation for the first instruction. */
10222 1.1 christos rela.r_offset = (htab->elf.splt->output_section->vma
10223 1.1 christos + htab->elf.splt->output_offset
10224 1.1 christos + ent->plt.offset + 2);
10225 1.1 christos rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10226 1.1.1.5 christos R_PPC_ADDR16_HA);
10227 1.1.1.5 christos rela.r_addend = got_offset;
10228 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10229 1.1 christos loc += sizeof (Elf32_External_Rela);
10230 1.1 christos
10231 1.1 christos /* Provide the @l relocation for the second instruction. */
10232 1.1 christos rela.r_offset = (htab->elf.splt->output_section->vma
10233 1.1 christos + htab->elf.splt->output_offset
10234 1.1 christos + ent->plt.offset + 6);
10235 1.1 christos rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10236 1.1 christos R_PPC_ADDR16_LO);
10237 1.1 christos rela.r_addend = got_offset;
10238 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10239 1.1 christos loc += sizeof (Elf32_External_Rela);
10240 1.1.1.5 christos
10241 1.1.1.5 christos /* Provide a relocation for the GOT entry corresponding to this
10242 1.1 christos PLT slot. Point it at the middle of the .plt entry. */
10243 1.1 christos rela.r_offset = (htab->elf.sgotplt->output_section->vma
10244 1.1 christos + htab->elf.sgotplt->output_offset
10245 1.1 christos + got_offset);
10246 1.1 christos rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
10247 1.1.1.5 christos R_PPC_ADDR32);
10248 1.1 christos rela.r_addend = ent->plt.offset + 16;
10249 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10250 1.1.1.5 christos }
10251 1.1 christos
10252 1.1 christos /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10253 1.1 christos In particular, the offset for the relocation is not the
10254 1.1 christos address of the PLT entry for this function, as specified
10255 1.1 christos by the ABI. Instead, the offset is set to the address of
10256 1.1 christos the GOT slot for this function. See EABI 4.4.4.1. */
10257 1.1 christos rela.r_offset = (htab->elf.sgotplt->output_section->vma
10258 1.1 christos + htab->elf.sgotplt->output_offset
10259 1.1 christos + got_offset);
10260 1.1 christos
10261 1.1 christos }
10262 1.1 christos else
10263 1.1 christos {
10264 1.1 christos asection *splt = htab->elf.splt;
10265 1.1 christos if (!htab->elf.dynamic_sections_created
10266 1.1 christos || h->dynindx == -1)
10267 1.1 christos splt = htab->elf.iplt;
10268 1.1 christos
10269 1.1 christos rela.r_offset = (splt->output_section->vma
10270 1.1 christos + splt->output_offset
10271 1.1 christos + ent->plt.offset);
10272 1.1 christos if (htab->plt_type == PLT_OLD
10273 1.1 christos || !htab->elf.dynamic_sections_created
10274 1.1 christos || h->dynindx == -1)
10275 1.1 christos {
10276 1.1 christos /* We don't need to fill in the .plt. The ppc dynamic
10277 1.1 christos linker will fill it in. */
10278 1.1 christos }
10279 1.1 christos else
10280 1.1 christos {
10281 1.1 christos bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
10282 1.1 christos + htab->glink->output_section->vma
10283 1.1 christos + htab->glink->output_offset);
10284 1.1 christos bfd_put_32 (output_bfd, val,
10285 1.1 christos splt->contents + ent->plt.offset);
10286 1.1 christos }
10287 1.1 christos }
10288 1.1 christos
10289 1.1.1.5 christos /* Fill in the entry in the .rela.plt section. */
10290 1.1.1.5 christos rela.r_addend = 0;
10291 1.1.1.5 christos if (!htab->elf.dynamic_sections_created
10292 1.1.1.5 christos || h->dynindx == -1)
10293 1.1.1.5 christos {
10294 1.1.1.5 christos BFD_ASSERT (h->type == STT_GNU_IFUNC
10295 1.1 christos && h->def_regular
10296 1.1.1.5 christos && (h->root.type == bfd_link_hash_defined
10297 1.1.1.5 christos || h->root.type == bfd_link_hash_defweak));
10298 1.1.1.5 christos rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
10299 1.1.1.5 christos rela.r_addend = SYM_VAL (h);
10300 1.1.1.5 christos }
10301 1.1.1.5 christos else
10302 1.1 christos rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
10303 1.1 christos
10304 1.1 christos if (!htab->elf.dynamic_sections_created
10305 1.1 christos || h->dynindx == -1)
10306 1.1 christos {
10307 1.1 christos loc = (htab->elf.irelplt->contents
10308 1.1 christos + (htab->elf.irelplt->reloc_count++
10309 1.1 christos * sizeof (Elf32_External_Rela)));
10310 1.1 christos htab->local_ifunc_resolver = 1;
10311 1.1 christos }
10312 1.1 christos else
10313 1.1 christos {
10314 1.1 christos loc = (htab->elf.srelplt->contents
10315 1.1 christos + reloc_index * sizeof (Elf32_External_Rela));
10316 1.1 christos if (h->type == STT_GNU_IFUNC && is_static_defined (h))
10317 1.1 christos htab->maybe_local_ifunc_resolver = 1;
10318 1.1 christos }
10319 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10320 1.1 christos
10321 1.1 christos if (!h->def_regular)
10322 1.1 christos {
10323 1.1 christos /* Mark the symbol as undefined, rather than as
10324 1.1 christos defined in the .plt section. Leave the value if
10325 1.1.1.4 christos there were any relocations where pointer equality
10326 1.1 christos matters (this is a clue for the dynamic linker, to
10327 1.1 christos make function pointer comparisons work between an
10328 1.1 christos application and shared library), otherwise set it
10329 1.1 christos to zero. */
10330 1.1 christos sym->st_shndx = SHN_UNDEF;
10331 1.1 christos if (!h->pointer_equality_needed)
10332 1.1 christos sym->st_value = 0;
10333 1.1 christos else if (!h->ref_regular_nonweak)
10334 1.1 christos {
10335 1.1 christos /* This breaks function pointer comparisons, but
10336 1.1 christos that is better than breaking tests for a NULL
10337 1.1 christos function pointer. */
10338 1.1 christos sym->st_value = 0;
10339 1.1 christos }
10340 1.1 christos }
10341 1.1 christos else if (h->type == STT_GNU_IFUNC
10342 1.1 christos && !bfd_link_pic (info))
10343 1.1 christos {
10344 1.1 christos /* Set the value of ifunc symbols in a non-pie
10345 1.1 christos executable to the glink entry. This is to avoid
10346 1.1 christos text relocations. We can't do this for ifunc in
10347 1.1 christos allocate_dynrelocs, as we do for normal dynamic
10348 1.1.1.5 christos function symbols with plt entries, because we need
10349 1.1 christos to keep the original value around for the ifunc
10350 1.1 christos relocation. */
10351 1.1.1.5 christos sym->st_shndx = (_bfd_elf_section_from_bfd_section
10352 1.1 christos (output_bfd, htab->glink->output_section));
10353 1.1 christos sym->st_value = (ent->glink_offset
10354 1.1 christos + htab->glink->output_offset
10355 1.1.1.2 christos + htab->glink->output_section->vma);
10356 1.1 christos }
10357 1.1 christos doneone = TRUE;
10358 1.1 christos }
10359 1.1 christos
10360 1.1 christos if (htab->plt_type == PLT_NEW
10361 1.1 christos || !htab->elf.dynamic_sections_created
10362 1.1 christos || h->dynindx == -1)
10363 1.1 christos {
10364 1.1 christos unsigned char *p;
10365 1.1 christos asection *splt = htab->elf.splt;
10366 1.1 christos if (!htab->elf.dynamic_sections_created
10367 1.1 christos || h->dynindx == -1)
10368 1.1 christos splt = htab->elf.iplt;
10369 1.1 christos
10370 1.1 christos p = (unsigned char *) htab->glink->contents + ent->glink_offset;
10371 1.1 christos
10372 1.1 christos if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt)
10373 1.1 christos {
10374 1.1 christos bfd_put_32 (output_bfd, LWZ_11_3, p);
10375 1.1 christos p += 4;
10376 1.1 christos bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
10377 1.1.1.4 christos p += 4;
10378 1.1 christos bfd_put_32 (output_bfd, MR_0_3, p);
10379 1.1 christos p += 4;
10380 1.1 christos bfd_put_32 (output_bfd, CMPWI_11_0, p);
10381 1.1 christos p += 4;
10382 1.1 christos bfd_put_32 (output_bfd, ADD_3_12_2, p);
10383 1.1 christos p += 4;
10384 1.1 christos bfd_put_32 (output_bfd, BEQLR, p);
10385 1.1 christos p += 4;
10386 1.1 christos bfd_put_32 (output_bfd, MR_3_0, p);
10387 1.1 christos p += 4;
10388 1.1 christos bfd_put_32 (output_bfd, NOP, p);
10389 1.1 christos p += 4;
10390 1.1 christos }
10391 1.1 christos
10392 1.1 christos write_glink_stub (ent, splt, p, info);
10393 1.1 christos
10394 1.1 christos if (!bfd_link_pic (info))
10395 1.1 christos /* We only need one non-PIC glink stub. */
10396 1.1 christos break;
10397 1.1 christos }
10398 1.1 christos else
10399 1.1 christos break;
10400 1.1 christos }
10401 1.1.1.5 christos
10402 1.1.1.5 christos if (h->needs_copy)
10403 1.1 christos {
10404 1.1.1.5 christos asection *s;
10405 1.1 christos Elf_Internal_Rela rela;
10406 1.1 christos bfd_byte *loc;
10407 1.1 christos
10408 1.1 christos /* This symbols needs a copy reloc. Set it up. */
10409 1.1 christos
10410 1.1 christos #ifdef DEBUG
10411 1.1 christos fprintf (stderr, ", copy");
10412 1.1 christos #endif
10413 1.1 christos
10414 1.1 christos BFD_ASSERT (h->dynindx != -1);
10415 1.1 christos
10416 1.1 christos if (ppc_elf_hash_entry (h)->has_sda_refs)
10417 1.1 christos s = htab->relsbss;
10418 1.1 christos else if (h->root.u.def.section == htab->elf.sdynrelro)
10419 1.1 christos s = htab->elf.sreldynrelro;
10420 1.1 christos else
10421 1.1 christos s = htab->elf.srelbss;
10422 1.1 christos BFD_ASSERT (s != NULL);
10423 1.1 christos
10424 1.1 christos rela.r_offset = SYM_VAL (h);
10425 1.1 christos rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
10426 1.1 christos rela.r_addend = 0;
10427 1.1 christos loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
10428 1.1.1.5 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10429 1.1 christos }
10430 1.1 christos
10431 1.1 christos #ifdef DEBUG
10432 1.1 christos fprintf (stderr, "\n");
10433 1.1 christos #endif
10434 1.1 christos
10435 1.1 christos return TRUE;
10436 1.1 christos }
10437 1.1 christos
10438 1.1 christos static enum elf_reloc_type_class
10440 1.1 christos ppc_elf_reloc_type_class (const struct bfd_link_info *info,
10441 1.1 christos const asection *rel_sec,
10442 1.1 christos const Elf_Internal_Rela *rela)
10443 1.1 christos {
10444 1.1 christos struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10445 1.1 christos
10446 1.1 christos if (rel_sec == htab->elf.irelplt)
10447 1.1 christos return reloc_class_ifunc;
10448 1.1 christos
10449 1.1 christos switch (ELF32_R_TYPE (rela->r_info))
10450 1.1 christos {
10451 1.1 christos case R_PPC_RELATIVE:
10452 1.1 christos return reloc_class_relative;
10453 1.1 christos case R_PPC_JMP_SLOT:
10454 1.1 christos return reloc_class_plt;
10455 1.1 christos case R_PPC_COPY:
10456 1.1 christos return reloc_class_copy;
10457 1.1 christos default:
10458 1.1 christos return reloc_class_normal;
10459 1.1 christos }
10460 1.1 christos }
10461 1.1.1.5 christos
10462 1.1 christos /* Finish up the dynamic sections. */
10464 1.1 christos
10465 1.1 christos static bfd_boolean
10466 1.1 christos ppc_elf_finish_dynamic_sections (bfd *output_bfd,
10467 1.1 christos struct bfd_link_info *info)
10468 1.1 christos {
10469 1.1 christos asection *sdyn;
10470 1.1 christos struct ppc_elf_link_hash_table *htab;
10471 1.1 christos bfd_vma got;
10472 1.1.1.5 christos bfd *dynobj;
10473 1.1 christos bfd_boolean ret = TRUE;
10474 1.1 christos
10475 1.1 christos #ifdef DEBUG
10476 1.1 christos fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
10477 1.1 christos #endif
10478 1.1 christos
10479 1.1 christos htab = ppc_elf_hash_table (info);
10480 1.1 christos dynobj = htab->elf.dynobj;
10481 1.1 christos sdyn = bfd_get_linker_section (dynobj, ".dynamic");
10482 1.1 christos
10483 1.1 christos got = 0;
10484 1.1 christos if (htab->elf.hgot != NULL)
10485 1.1 christos got = SYM_VAL (htab->elf.hgot);
10486 1.1 christos
10487 1.1.1.5 christos if (htab->elf.dynamic_sections_created)
10488 1.1 christos {
10489 1.1.1.5 christos Elf32_External_Dyn *dyncon, *dynconend;
10490 1.1 christos
10491 1.1 christos BFD_ASSERT (htab->elf.splt != NULL && sdyn != NULL);
10492 1.1 christos
10493 1.1 christos dyncon = (Elf32_External_Dyn *) sdyn->contents;
10494 1.1.1.5 christos dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10495 1.1 christos for (; dyncon < dynconend; dyncon++)
10496 1.1 christos {
10497 1.1 christos Elf_Internal_Dyn dyn;
10498 1.1.1.5 christos asection *s;
10499 1.1 christos
10500 1.1 christos bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
10501 1.1 christos
10502 1.1 christos switch (dyn.d_tag)
10503 1.1 christos {
10504 1.1 christos case DT_PLTGOT:
10505 1.1 christos if (htab->is_vxworks)
10506 1.1.1.5 christos s = htab->elf.sgotplt;
10507 1.1.1.5 christos else
10508 1.1.1.5 christos s = htab->elf.splt;
10509 1.1.1.5 christos dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10510 1.1.1.5 christos break;
10511 1.1.1.5 christos
10512 1.1.1.5 christos case DT_PLTRELSZ:
10513 1.1.1.5 christos dyn.d_un.d_val = htab->elf.srelplt->size;
10514 1.1.1.5 christos break;
10515 1.1 christos
10516 1.1 christos case DT_JMPREL:
10517 1.1 christos s = htab->elf.srelplt;
10518 1.1 christos dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10519 1.1 christos break;
10520 1.1 christos
10521 1.1 christos case DT_PPC_GOT:
10522 1.1 christos dyn.d_un.d_ptr = got;
10523 1.1 christos break;
10524 1.1 christos
10525 1.1 christos case DT_TEXTREL:
10526 1.1 christos if (htab->local_ifunc_resolver)
10527 1.1 christos info->callbacks->einfo
10528 1.1.1.5 christos (_("%X%P: text relocations and GNU indirect "
10529 1.1.1.5 christos "functions will result in a segfault at runtime\n"));
10530 1.1 christos else if (htab->maybe_local_ifunc_resolver)
10531 1.1.1.5 christos info->callbacks->einfo
10532 1.1.1.5 christos (_("%P: warning: text relocations and GNU indirect "
10533 1.1 christos "functions may result in a segfault at runtime\n"));
10534 1.1 christos continue;
10535 1.1 christos
10536 1.1 christos default:
10537 1.1 christos if (htab->is_vxworks
10538 1.1 christos && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10539 1.1 christos break;
10540 1.1 christos continue;
10541 1.1 christos }
10542 1.1 christos
10543 1.1 christos bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10544 1.1 christos }
10545 1.1 christos }
10546 1.1 christos
10547 1.1 christos if (htab->elf.sgot != NULL
10548 1.1 christos && htab->elf.sgot->output_section != bfd_abs_section_ptr)
10549 1.1 christos {
10550 1.1 christos if (htab->elf.hgot->root.u.def.section == htab->elf.sgot
10551 1.1 christos || htab->elf.hgot->root.u.def.section == htab->elf.sgotplt)
10552 1.1 christos {
10553 1.1 christos unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
10554 1.1 christos
10555 1.1 christos p += htab->elf.hgot->root.u.def.value;
10556 1.1 christos if (htab->plt_type == PLT_OLD)
10557 1.1.1.5 christos {
10558 1.1 christos /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10559 1.1 christos so that a function can easily find the address of
10560 1.1.1.5 christos _GLOBAL_OFFSET_TABLE_. */
10561 1.1.1.5 christos BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
10562 1.1.1.5 christos < htab->elf.hgot->root.u.def.section->size);
10563 1.1 christos bfd_put_32 (output_bfd, 0x4e800021, p - 4);
10564 1.1 christos }
10565 1.1 christos
10566 1.1 christos if (sdyn != NULL)
10567 1.1.1.5 christos {
10568 1.1 christos bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10569 1.1 christos BFD_ASSERT (htab->elf.hgot->root.u.def.value
10570 1.1 christos < htab->elf.hgot->root.u.def.section->size);
10571 1.1.1.5 christos bfd_put_32 (output_bfd, val, p);
10572 1.1.1.5 christos }
10573 1.1.1.5 christos }
10574 1.1.1.5 christos else
10575 1.1 christos {
10576 1.1.1.5 christos /* xgettext:c-format */
10577 1.1 christos info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
10578 1.1.1.4 christos htab->elf.hgot->root.root.string,
10579 1.1 christos (htab->elf.sgotplt != NULL
10580 1.1 christos ? htab->elf.sgotplt->name
10581 1.1 christos : htab->elf.sgot->name));
10582 1.1.1.4 christos bfd_set_error (bfd_error_bad_value);
10583 1.1 christos ret = FALSE;
10584 1.1 christos }
10585 1.1 christos
10586 1.1 christos elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
10587 1.1 christos }
10588 1.1 christos
10589 1.1 christos /* Fill in the first entry in the VxWorks procedure linkage table. */
10590 1.1 christos if (htab->is_vxworks
10591 1.1 christos && htab->elf.splt != NULL
10592 1.1 christos && htab->elf.splt->size != 0
10593 1.1 christos && htab->elf.splt->output_section != bfd_abs_section_ptr)
10594 1.1 christos {
10595 1.1 christos asection *splt = htab->elf.splt;
10596 1.1 christos /* Use the right PLT. */
10597 1.1 christos const bfd_vma *plt_entry = (bfd_link_pic (info)
10598 1.1 christos ? ppc_elf_vxworks_pic_plt0_entry
10599 1.1 christos : ppc_elf_vxworks_plt0_entry);
10600 1.1 christos
10601 1.1 christos if (!bfd_link_pic (info))
10602 1.1 christos {
10603 1.1.1.4 christos bfd_vma got_value = SYM_VAL (htab->elf.hgot);
10604 1.1 christos
10605 1.1 christos bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
10606 1.1 christos splt->contents + 0);
10607 1.1 christos bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
10608 1.1 christos splt->contents + 4);
10609 1.1 christos }
10610 1.1 christos else
10611 1.1.1.5 christos {
10612 1.1.1.5 christos bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10613 1.1 christos bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10614 1.1 christos }
10615 1.1 christos bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10616 1.1 christos bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10617 1.1 christos bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10618 1.1 christos bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10619 1.1 christos bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10620 1.1.1.5 christos bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10621 1.1.1.5 christos
10622 1.1 christos if (! bfd_link_pic (info))
10623 1.1 christos {
10624 1.1 christos Elf_Internal_Rela rela;
10625 1.1 christos bfd_byte *loc;
10626 1.1 christos
10627 1.1 christos loc = htab->srelplt2->contents;
10628 1.1 christos
10629 1.1 christos /* Output the @ha relocation for the first instruction. */
10630 1.1 christos rela.r_offset = (htab->elf.splt->output_section->vma
10631 1.1 christos + htab->elf.splt->output_offset
10632 1.1 christos + 2);
10633 1.1 christos rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10634 1.1 christos rela.r_addend = 0;
10635 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10636 1.1 christos loc += sizeof (Elf32_External_Rela);
10637 1.1 christos
10638 1.1 christos /* Output the @l relocation for the second instruction. */
10639 1.1 christos rela.r_offset = (htab->elf.splt->output_section->vma
10640 1.1 christos + htab->elf.splt->output_offset
10641 1.1 christos + 6);
10642 1.1 christos rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10643 1.1 christos rela.r_addend = 0;
10644 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10645 1.1 christos loc += sizeof (Elf32_External_Rela);
10646 1.1 christos
10647 1.1 christos /* Fix up the remaining relocations. They may have the wrong
10648 1.1 christos symbol index for _G_O_T_ or _P_L_T_ depending on the order
10649 1.1 christos in which symbols were output. */
10650 1.1 christos while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10651 1.1 christos {
10652 1.1 christos Elf_Internal_Rela rel;
10653 1.1 christos
10654 1.1 christos bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10655 1.1 christos rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10656 1.1 christos bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10657 1.1 christos loc += sizeof (Elf32_External_Rela);
10658 1.1 christos
10659 1.1 christos bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10660 1.1 christos rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10661 1.1 christos bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10662 1.1 christos loc += sizeof (Elf32_External_Rela);
10663 1.1 christos
10664 1.1 christos bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10665 1.1 christos rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
10666 1.1 christos bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10667 1.1 christos loc += sizeof (Elf32_External_Rela);
10668 1.1 christos }
10669 1.1 christos }
10670 1.1 christos }
10671 1.1 christos
10672 1.1 christos if (htab->glink != NULL
10673 1.1 christos && htab->glink->contents != NULL
10674 1.1 christos && htab->elf.dynamic_sections_created)
10675 1.1 christos {
10676 1.1 christos unsigned char *p;
10677 1.1 christos unsigned char *endp;
10678 1.1 christos bfd_vma res0;
10679 1.1 christos unsigned int i;
10680 1.1 christos
10681 1.1 christos /*
10682 1.1 christos * PIC glink code is the following:
10683 1.1 christos *
10684 1.1 christos * # ith PLT code stub.
10685 1.1 christos * addis 11,30,(plt+(i-1)*4-got)@ha
10686 1.1 christos * lwz 11,(plt+(i-1)*4-got)@l(11)
10687 1.1 christos * mtctr 11
10688 1.1 christos * bctr
10689 1.1 christos *
10690 1.1 christos * # A table of branches, one for each plt entry.
10691 1.1 christos * # The idea is that the plt call stub loads ctr and r11 with these
10692 1.1 christos * # addresses, so (r11 - res_0) gives the plt index * 4.
10693 1.1 christos * res_0: b PLTresolve
10694 1.1 christos * res_1: b PLTresolve
10695 1.1 christos * .
10696 1.1 christos * # Some number of entries towards the end can be nops
10697 1.1 christos * res_n_m3: nop
10698 1.1 christos * res_n_m2: nop
10699 1.1 christos * res_n_m1:
10700 1.1 christos *
10701 1.1 christos * PLTresolve:
10702 1.1 christos * addis 11,11,(1f-res_0)@ha
10703 1.1 christos * mflr 0
10704 1.1 christos * bcl 20,31,1f
10705 1.1 christos * 1: addi 11,11,(1b-res_0)@l
10706 1.1 christos * mflr 12
10707 1.1 christos * mtlr 0
10708 1.1 christos * sub 11,11,12 # r11 = index * 4
10709 1.1 christos * addis 12,12,(got+4-1b)@ha
10710 1.1 christos * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10711 1.1 christos * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10712 1.1 christos * mtctr 0
10713 1.1 christos * add 0,11,11
10714 1.1 christos * add 11,0,11 # r11 = index * 12 = reloc offset.
10715 1.1 christos * bctr
10716 1.1 christos */
10717 1.1 christos static const unsigned int pic_plt_resolve[] =
10718 1.1 christos {
10719 1.1 christos ADDIS_11_11,
10720 1.1 christos MFLR_0,
10721 1.1 christos BCL_20_31,
10722 1.1 christos ADDI_11_11,
10723 1.1 christos MFLR_12,
10724 1.1 christos MTLR_0,
10725 1.1 christos SUB_11_11_12,
10726 1.1 christos ADDIS_12_12,
10727 1.1 christos LWZ_0_12,
10728 1.1 christos LWZ_12_12,
10729 1.1 christos MTCTR_0,
10730 1.1 christos ADD_0_11_11,
10731 1.1 christos ADD_11_0_11,
10732 1.1 christos BCTR,
10733 1.1 christos NOP,
10734 1.1 christos NOP
10735 1.1 christos };
10736 1.1 christos
10737 1.1 christos /*
10738 1.1 christos * Non-PIC glink code is a little simpler.
10739 1.1 christos *
10740 1.1 christos * # ith PLT code stub.
10741 1.1 christos * lis 11,(plt+(i-1)*4)@ha
10742 1.1 christos * lwz 11,(plt+(i-1)*4)@l(11)
10743 1.1 christos * mtctr 11
10744 1.1 christos * bctr
10745 1.1 christos *
10746 1.1 christos * The branch table is the same, then comes
10747 1.1 christos *
10748 1.1 christos * PLTresolve:
10749 1.1 christos * lis 12,(got+4)@ha
10750 1.1 christos * addis 11,11,(-res_0)@ha
10751 1.1 christos * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10752 1.1 christos * addi 11,11,(-res_0)@l # r11 = index * 4
10753 1.1 christos * mtctr 0
10754 1.1 christos * add 0,11,11
10755 1.1 christos * lwz 12,(got+8)@l(12) # got[2] contains the map address
10756 1.1 christos * add 11,0,11 # r11 = index * 12 = reloc offset.
10757 1.1 christos * bctr
10758 1.1 christos */
10759 1.1 christos static const unsigned int plt_resolve[] =
10760 1.1 christos {
10761 1.1 christos LIS_12,
10762 1.1 christos ADDIS_11_11,
10763 1.1 christos LWZ_0_12,
10764 1.1 christos ADDI_11_11,
10765 1.1 christos MTCTR_0,
10766 1.1 christos ADD_0_11_11,
10767 1.1 christos LWZ_12_12,
10768 1.1 christos ADD_11_0_11,
10769 1.1 christos BCTR,
10770 1.1 christos NOP,
10771 1.1.1.2 christos NOP,
10772 1.1 christos NOP,
10773 1.1 christos NOP,
10774 1.1 christos NOP,
10775 1.1 christos NOP,
10776 1.1 christos NOP
10777 1.1 christos };
10778 1.1 christos
10779 1.1 christos if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
10780 1.1 christos abort ();
10781 1.1 christos if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
10782 1.1 christos abort ();
10783 1.1 christos
10784 1.1 christos /* Build the branch table, one for each plt entry (less one),
10785 1.1 christos and perhaps some padding. */
10786 1.1.1.2 christos p = htab->glink->contents;
10787 1.1.1.2 christos p += htab->glink_pltresolve;
10788 1.1.1.2 christos endp = htab->glink->contents;
10789 1.1.1.2 christos endp += htab->glink->size - GLINK_PLTRESOLVE;
10790 1.1.1.2 christos while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
10791 1.1.1.2 christos {
10792 1.1.1.2 christos bfd_put_32 (output_bfd, B + endp - p, p);
10793 1.1.1.2 christos p += 4;
10794 1.1.1.2 christos }
10795 1.1.1.2 christos while (p < endp)
10796 1.1.1.2 christos {
10797 1.1.1.2 christos bfd_put_32 (output_bfd, NOP, p);
10798 1.1.1.2 christos p += 4;
10799 1.1.1.2 christos }
10800 1.1.1.2 christos
10801 1.1.1.2 christos res0 = (htab->glink_pltresolve
10802 1.1.1.2 christos + htab->glink->output_section->vma
10803 1.1.1.2 christos + htab->glink->output_offset);
10804 1.1.1.2 christos
10805 1.1.1.2 christos if (htab->params->ppc476_workaround)
10806 1.1.1.2 christos {
10807 1.1.1.2 christos /* Ensure that a call stub at the end of a page doesn't
10808 1.1.1.2 christos result in prefetch over the end of the page into the
10809 1.1.1.2 christos glink branch table. */
10810 1.1.1.2 christos bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10811 1.1.1.2 christos bfd_vma page_addr;
10812 1.1.1.2 christos bfd_vma glink_start = (htab->glink->output_section->vma
10813 1.1.1.2 christos + htab->glink->output_offset);
10814 1.1.1.2 christos
10815 1.1.1.2 christos for (page_addr = res0 & -pagesize;
10816 1.1.1.2 christos page_addr > glink_start;
10817 1.1.1.2 christos page_addr -= pagesize)
10818 1.1.1.2 christos {
10819 1.1 christos /* We have a plt call stub that may need fixing. */
10820 1.1.1.4 christos bfd_byte *loc;
10821 1.1 christos unsigned int insn;
10822 1.1 christos
10823 1.1 christos loc = htab->glink->contents + page_addr - 4 - glink_start;
10824 1.1 christos insn = bfd_get_32 (output_bfd, loc);
10825 1.1 christos if (insn == BCTR)
10826 1.1.1.2 christos {
10827 1.1.1.2 christos /* By alignment, we know that there must be at least
10828 1.1.1.2 christos one other call stub before this one. */
10829 1.1.1.2 christos insn = bfd_get_32 (output_bfd, loc - 16);
10830 1.1.1.2 christos if (insn == BCTR)
10831 1.1 christos bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10832 1.1 christos else
10833 1.1 christos bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10834 1.1 christos }
10835 1.1 christos }
10836 1.1 christos }
10837 1.1 christos
10838 1.1 christos /* Last comes the PLTresolve stub. */
10839 1.1 christos if (bfd_link_pic (info))
10840 1.1 christos {
10841 1.1 christos bfd_vma bcl;
10842 1.1 christos
10843 1.1 christos for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
10844 1.1 christos {
10845 1.1 christos unsigned int insn = pic_plt_resolve[i];
10846 1.1 christos
10847 1.1 christos if (htab->params->ppc476_workaround && insn == NOP)
10848 1.1 christos insn = BA + 0;
10849 1.1 christos bfd_put_32 (output_bfd, insn, p);
10850 1.1 christos p += 4;
10851 1.1 christos }
10852 1.1 christos p -= 4 * ARRAY_SIZE (pic_plt_resolve);
10853 1.1 christos
10854 1.1 christos bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10855 1.1 christos + htab->glink->output_section->vma
10856 1.1 christos + htab->glink->output_offset);
10857 1.1 christos
10858 1.1 christos bfd_put_32 (output_bfd,
10859 1.1 christos ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
10860 1.1 christos bfd_put_32 (output_bfd,
10861 1.1 christos ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
10862 1.1 christos bfd_put_32 (output_bfd,
10863 1.1 christos ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
10864 1.1.1.2 christos if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10865 1.1.1.2 christos {
10866 1.1.1.2 christos bfd_put_32 (output_bfd,
10867 1.1.1.2 christos LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10868 1.1.1.2 christos bfd_put_32 (output_bfd,
10869 1.1 christos LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
10870 1.1 christos }
10871 1.1 christos else
10872 1.1 christos {
10873 1.1 christos bfd_put_32 (output_bfd,
10874 1.1 christos LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10875 1.1 christos bfd_put_32 (output_bfd,
10876 1.1 christos LWZ_12_12 + 4, p + 9*4);
10877 1.1 christos }
10878 1.1 christos }
10879 1.1 christos else
10880 1.1 christos {
10881 1.1 christos for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
10882 1.1 christos {
10883 1.1 christos unsigned int insn = plt_resolve[i];
10884 1.1 christos
10885 1.1 christos if (htab->params->ppc476_workaround && insn == NOP)
10886 1.1 christos insn = BA + 0;
10887 1.1 christos bfd_put_32 (output_bfd, insn, p);
10888 1.1 christos p += 4;
10889 1.1 christos }
10890 1.1 christos p -= 4 * ARRAY_SIZE (plt_resolve);
10891 1.1 christos
10892 1.1 christos bfd_put_32 (output_bfd,
10893 1.1 christos LIS_12 + PPC_HA (got + 4), p + 0*4);
10894 1.1 christos bfd_put_32 (output_bfd,
10895 1.1 christos ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
10896 1.1 christos bfd_put_32 (output_bfd,
10897 1.1 christos ADDI_11_11 + PPC_LO (-res0), p + 3*4);
10898 1.1 christos if (PPC_HA (got + 4) == PPC_HA (got + 8))
10899 1.1 christos {
10900 1.1 christos bfd_put_32 (output_bfd,
10901 1.1 christos LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
10902 1.1 christos bfd_put_32 (output_bfd,
10903 1.1 christos LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
10904 1.1 christos }
10905 1.1 christos else
10906 1.1 christos {
10907 1.1 christos bfd_put_32 (output_bfd,
10908 1.1 christos LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
10909 1.1 christos bfd_put_32 (output_bfd,
10910 1.1 christos LWZ_12_12 + 4, p + 6*4);
10911 1.1 christos }
10912 1.1 christos }
10913 1.1 christos }
10914 1.1 christos
10915 1.1 christos if (htab->glink_eh_frame != NULL
10916 1.1 christos && htab->glink_eh_frame->contents != NULL)
10917 1.1 christos {
10918 1.1 christos unsigned char *p = htab->glink_eh_frame->contents;
10919 1.1 christos bfd_vma val;
10920 1.1 christos
10921 1.1 christos p += sizeof (glink_eh_frame_cie);
10922 1.1 christos /* FDE length. */
10923 1.1 christos p += 4;
10924 1.1 christos /* CIE pointer. */
10925 1.1.1.2 christos p += 4;
10926 1.1 christos /* Offset to .glink. */
10927 1.1.1.2 christos val = (htab->glink->output_section->vma
10928 1.1 christos + htab->glink->output_offset);
10929 1.1 christos val -= (htab->glink_eh_frame->output_section->vma
10930 1.1 christos + htab->glink_eh_frame->output_offset);
10931 1.1 christos val -= p - htab->glink_eh_frame->contents;
10932 1.1 christos bfd_put_32 (htab->elf.dynobj, val, p);
10933 1.1 christos
10934 1.1.1.2 christos if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10935 1.1 christos && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10936 1.1 christos htab->glink_eh_frame,
10937 1.1.1.2 christos htab->glink_eh_frame->contents))
10938 1.1 christos return FALSE;
10939 1.1 christos }
10940 1.1 christos
10941 1.1 christos return ret;
10942 1.1 christos }
10943 1.1 christos
10944 1.1 christos #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10946 1.1 christos #define TARGET_LITTLE_NAME "elf32-powerpcle"
10947 1.1 christos #define TARGET_BIG_SYM powerpc_elf32_vec
10948 1.1 christos #define TARGET_BIG_NAME "elf32-powerpc"
10949 1.1 christos #define ELF_ARCH bfd_arch_powerpc
10950 1.1 christos #define ELF_TARGET_ID PPC32_ELF_DATA
10951 1.1.1.5 christos #define ELF_MACHINE_CODE EM_PPC
10952 1.1 christos #ifdef __QNXTARGET__
10953 1.1 christos #define ELF_MAXPAGESIZE 0x1000
10954 1.1 christos #define ELF_COMMONPAGESIZE 0x1000
10955 1.1.1.2 christos #else
10956 1.1 christos #define ELF_MAXPAGESIZE 0x10000
10957 1.1 christos #define ELF_COMMONPAGESIZE 0x10000
10958 1.1 christos #endif
10959 1.1 christos #define ELF_MINPAGESIZE 0x1000
10960 1.1 christos #define elf_info_to_howto ppc_elf_info_to_howto
10961 1.1 christos
10962 1.1 christos #ifdef EM_CYGNUS_POWERPC
10963 1.1 christos #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10964 1.1 christos #endif
10965 1.1 christos
10966 1.1 christos #ifdef EM_PPC_OLD
10967 1.1 christos #define ELF_MACHINE_ALT2 EM_PPC_OLD
10968 1.1 christos #endif
10969 1.1 christos
10970 1.1 christos #define elf_backend_plt_not_loaded 1
10971 1.1 christos #define elf_backend_want_dynrelro 1
10972 1.1 christos #define elf_backend_can_gc_sections 1
10973 1.1 christos #define elf_backend_can_refcount 1
10974 1.1 christos #define elf_backend_rela_normal 1
10975 1.1 christos #define elf_backend_caches_rawsize 1
10976 1.1 christos
10977 1.1 christos #define bfd_elf32_mkobject ppc_elf_mkobject
10978 1.1 christos #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10979 1.1 christos #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10980 1.1 christos #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10981 1.1 christos #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10982 1.1 christos #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10983 1.1 christos #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10984 1.1 christos #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10985 1.1 christos
10986 1.1 christos #define elf_backend_object_p ppc_elf_object_p
10987 1.1 christos #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10988 1.1 christos #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10989 1.1 christos #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10990 1.1 christos #define elf_backend_relocate_section ppc_elf_relocate_section
10991 1.1 christos #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10992 1.1 christos #define elf_backend_check_relocs ppc_elf_check_relocs
10993 1.1 christos #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10994 1.1 christos #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10995 1.1 christos #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10996 1.1 christos #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10997 1.1 christos #define elf_backend_hash_symbol ppc_elf_hash_symbol
10998 1.1 christos #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10999 1.1 christos #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
11000 1.1 christos #define elf_backend_fake_sections ppc_elf_fake_sections
11001 1.1 christos #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
11002 1.1 christos #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
11003 1.1 christos #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
11004 1.1.1.2 christos #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
11005 1.1 christos #define elf_backend_write_core_note ppc_elf_write_core_note
11006 1.1 christos #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
11007 1.1 christos #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
11008 1.1 christos #define elf_backend_final_write_processing ppc_elf_final_write_processing
11009 1.1 christos #define elf_backend_write_section ppc_elf_write_section
11010 1.1 christos #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
11011 1.1 christos #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
11012 1.1 christos #define elf_backend_action_discarded ppc_elf_action_discarded
11013 1.1 christos #define elf_backend_init_index_section _bfd_elf_init_1_index_section
11014 1.1 christos #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
11015 1.1 christos
11016 1.1 christos #include "elf32-target.h"
11017 1.1 christos
11018 1.1 christos /* FreeBSD Target */
11019 1.1 christos
11020 1.1 christos #undef TARGET_LITTLE_SYM
11021 1.1 christos #undef TARGET_LITTLE_NAME
11022 1.1.1.2 christos
11023 1.1 christos #undef TARGET_BIG_SYM
11024 1.1 christos #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
11025 1.1 christos #undef TARGET_BIG_NAME
11026 1.1 christos #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
11027 1.1 christos
11028 1.1 christos #undef ELF_OSABI
11029 1.1 christos #define ELF_OSABI ELFOSABI_FREEBSD
11030 1.1.1.5 christos
11031 1.1 christos #undef elf32_bed
11032 1.1 christos #define elf32_bed elf32_powerpc_fbsd_bed
11033 1.1 christos
11034 1.1 christos #include "elf32-target.h"
11035 1.1 christos
11036 1.1 christos /* VxWorks Target */
11037 1.1 christos
11038 1.1 christos #undef TARGET_LITTLE_SYM
11039 1.1 christos #undef TARGET_LITTLE_NAME
11040 1.1 christos
11041 1.1 christos #undef TARGET_BIG_SYM
11042 1.1 christos #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
11043 1.1 christos #undef TARGET_BIG_NAME
11044 1.1 christos #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
11045 1.1 christos
11046 1.1 christos #undef ELF_OSABI
11047 1.1 christos
11048 1.1 christos /* VxWorks uses the elf default section flags for .plt. */
11049 1.1 christos static const struct bfd_elf_special_section *
11050 1.1 christos ppc_elf_vxworks_get_sec_type_attr (bfd *abfd, asection *sec)
11051 1.1 christos {
11052 1.1 christos if (sec->name == NULL)
11053 1.1 christos return NULL;
11054 1.1 christos
11055 1.1 christos if (strcmp (sec->name, ".plt") == 0)
11056 1.1 christos return _bfd_elf_get_sec_type_attr (abfd, sec);
11057 1.1 christos
11058 1.1 christos return ppc_elf_get_sec_type_attr (abfd, sec);
11059 1.1 christos }
11060 1.1 christos
11061 1.1 christos /* Like ppc_elf_link_hash_table_create, but overrides
11062 1.1 christos appropriately for VxWorks. */
11063 1.1 christos static struct bfd_link_hash_table *
11064 1.1 christos ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
11065 1.1 christos {
11066 1.1 christos struct bfd_link_hash_table *ret;
11067 1.1.1.5 christos
11068 1.1.1.5 christos ret = ppc_elf_link_hash_table_create (abfd);
11069 1.1 christos if (ret)
11070 1.1 christos {
11071 1.1 christos struct ppc_elf_link_hash_table *htab
11072 1.1.1.5 christos = (struct ppc_elf_link_hash_table *)ret;
11073 1.1.1.5 christos htab->is_vxworks = 1;
11074 1.1 christos htab->plt_type = PLT_VXWORKS;
11075 1.1 christos htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
11076 1.1.1.5 christos htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
11077 1.1 christos htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
11078 1.1 christos }
11079 1.1 christos return ret;
11080 1.1 christos }
11081 1.1 christos
11082 1.1.1.5 christos /* Tweak magic VxWorks symbols as they are loaded. */
11083 1.1.1.5 christos static bfd_boolean
11084 1.1 christos ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
11085 1.1 christos struct bfd_link_info *info,
11086 1.1 christos Elf_Internal_Sym *sym,
11087 1.1 christos const char **namep,
11088 1.1 christos flagword *flagsp,
11089 1.1 christos asection **secp,
11090 1.1 christos bfd_vma *valp)
11091 1.1 christos {
11092 1.1 christos if (!elf_vxworks_add_symbol_hook (abfd, info, sym, namep, flagsp, secp,
11093 1.1 christos valp))
11094 1.1 christos return FALSE;
11095 1.1 christos
11096 1.1 christos return ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp);
11097 1.1 christos }
11098 1.1 christos
11099 1.1 christos static void
11100 1.1.1.5 christos ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
11101 1.1.1.5 christos {
11102 1.1 christos ppc_elf_final_write_processing (abfd, linker);
11103 1.1 christos elf_vxworks_final_write_processing (abfd, linker);
11104 1.1 christos }
11105 1.1 christos
11106 1.1 christos /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
11107 1.1 christos define it. */
11108 1.1 christos #undef elf_backend_want_plt_sym
11109 1.1 christos #define elf_backend_want_plt_sym 1
11110 1.1 christos #undef elf_backend_want_got_plt
11111 1.1 christos #define elf_backend_want_got_plt 1
11112 1.1 christos #undef elf_backend_got_symbol_offset
11113 1.1 christos #define elf_backend_got_symbol_offset 0
11114 1.1 christos #undef elf_backend_plt_not_loaded
11115 1.1 christos #define elf_backend_plt_not_loaded 0
11116 1.1 christos #undef elf_backend_plt_readonly
11117 1.1 christos #define elf_backend_plt_readonly 1
11118 1.1 christos #undef elf_backend_got_header_size
11119 1.1 christos #define elf_backend_got_header_size 12
11120 1.1 christos #undef elf_backend_dtrel_excludes_plt
11121 1.1 christos #define elf_backend_dtrel_excludes_plt 1
11122 1.1 christos
11123 1.1 christos #undef bfd_elf32_get_synthetic_symtab
11124 1.1 christos
11125 1.1 christos #undef bfd_elf32_bfd_link_hash_table_create
11126 1.1 christos #define bfd_elf32_bfd_link_hash_table_create \
11127 1.1 christos ppc_elf_vxworks_link_hash_table_create
11128 1.1 christos #undef elf_backend_add_symbol_hook
11129 #define elf_backend_add_symbol_hook \
11130 ppc_elf_vxworks_add_symbol_hook
11131 #undef elf_backend_link_output_symbol_hook
11132 #define elf_backend_link_output_symbol_hook \
11133 elf_vxworks_link_output_symbol_hook
11134 #undef elf_backend_final_write_processing
11135 #define elf_backend_final_write_processing \
11136 ppc_elf_vxworks_final_write_processing
11137 #undef elf_backend_get_sec_type_attr
11138 #define elf_backend_get_sec_type_attr \
11139 ppc_elf_vxworks_get_sec_type_attr
11140 #undef elf_backend_emit_relocs
11141 #define elf_backend_emit_relocs \
11142 elf_vxworks_emit_relocs
11143
11144 #undef elf32_bed
11145 #define elf32_bed ppc_elf_vxworks_bed
11146 #undef elf_backend_post_process_headers
11147
11148 #include "elf32-target.h"
11149