elf32-ppc.c revision 1.6 1 1.1 christos /* PowerPC-specific support for 32-bit ELF
2 1.6 christos Copyright (C) 1994-2016 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 christos
39 1.1 christos typedef enum split16_format_type
40 1.1 christos {
41 1.1 christos split16a_type = 0,
42 1.1 christos split16d_type
43 1.1 christos }
44 1.1 christos split16_format_type;
45 1.1 christos
46 1.1 christos /* RELA relocations are used here. */
47 1.1 christos
48 1.1 christos static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
49 1.1 christos (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
50 1.1 christos static bfd_reloc_status_type ppc_elf_unhandled_reloc
51 1.1 christos (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
52 1.1 christos
53 1.1 christos /* Branch prediction bit for branch taken relocs. */
54 1.1 christos #define BRANCH_PREDICT_BIT 0x200000
55 1.1 christos /* Mask to set RA in memory instructions. */
56 1.1 christos #define RA_REGISTER_MASK 0x001f0000
57 1.1 christos /* Value to shift register by to insert RA. */
58 1.1 christos #define RA_REGISTER_SHIFT 16
59 1.1 christos
60 1.1 christos /* The name of the dynamic interpreter. This is put in the .interp
61 1.1 christos section. */
62 1.1 christos #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
63 1.1 christos
64 1.1 christos /* For old-style PLT. */
65 1.1 christos /* The number of single-slot PLT entries (the rest use two slots). */
66 1.1 christos #define PLT_NUM_SINGLE_ENTRIES 8192
67 1.1 christos
68 1.1 christos /* For new-style .glink and .plt. */
69 1.1 christos #define GLINK_PLTRESOLVE 16*4
70 1.1 christos #define GLINK_ENTRY_SIZE 4*4
71 1.1 christos #define TLS_GET_ADDR_GLINK_SIZE 12*4
72 1.1 christos
73 1.1 christos /* VxWorks uses its own plt layout, filled in by the static linker. */
74 1.1 christos
75 1.1 christos /* The standard VxWorks PLT entry. */
76 1.1 christos #define VXWORKS_PLT_ENTRY_SIZE 32
77 1.1 christos static const bfd_vma ppc_elf_vxworks_plt_entry
78 1.1 christos [VXWORKS_PLT_ENTRY_SIZE / 4] =
79 1.1 christos {
80 1.1 christos 0x3d800000, /* lis r12,0 */
81 1.1 christos 0x818c0000, /* lwz r12,0(r12) */
82 1.1 christos 0x7d8903a6, /* mtctr r12 */
83 1.1 christos 0x4e800420, /* bctr */
84 1.1 christos 0x39600000, /* li r11,0 */
85 1.1 christos 0x48000000, /* b 14 <.PLT0resolve+0x4> */
86 1.1 christos 0x60000000, /* nop */
87 1.1 christos 0x60000000, /* nop */
88 1.1 christos };
89 1.1 christos static const bfd_vma ppc_elf_vxworks_pic_plt_entry
90 1.1 christos [VXWORKS_PLT_ENTRY_SIZE / 4] =
91 1.1 christos {
92 1.1 christos 0x3d9e0000, /* addis r12,r30,0 */
93 1.1 christos 0x818c0000, /* lwz r12,0(r12) */
94 1.1 christos 0x7d8903a6, /* mtctr r12 */
95 1.1 christos 0x4e800420, /* bctr */
96 1.1 christos 0x39600000, /* li r11,0 */
97 1.1 christos 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
98 1.1 christos 0x60000000, /* nop */
99 1.1 christos 0x60000000, /* nop */
100 1.1 christos };
101 1.1 christos
102 1.1 christos /* The initial VxWorks PLT entry. */
103 1.1 christos #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
104 1.1 christos static const bfd_vma ppc_elf_vxworks_plt0_entry
105 1.1 christos [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
106 1.1 christos {
107 1.1 christos 0x3d800000, /* lis r12,0 */
108 1.1 christos 0x398c0000, /* addi r12,r12,0 */
109 1.1 christos 0x800c0008, /* lwz r0,8(r12) */
110 1.1 christos 0x7c0903a6, /* mtctr r0 */
111 1.1 christos 0x818c0004, /* lwz r12,4(r12) */
112 1.1 christos 0x4e800420, /* bctr */
113 1.1 christos 0x60000000, /* nop */
114 1.1 christos 0x60000000, /* nop */
115 1.1 christos };
116 1.1 christos static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
117 1.1 christos [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
118 1.1 christos {
119 1.1 christos 0x819e0008, /* lwz r12,8(r30) */
120 1.1 christos 0x7d8903a6, /* mtctr r12 */
121 1.1 christos 0x819e0004, /* lwz r12,4(r30) */
122 1.1 christos 0x4e800420, /* bctr */
123 1.1 christos 0x60000000, /* nop */
124 1.1 christos 0x60000000, /* nop */
125 1.1 christos 0x60000000, /* nop */
126 1.1 christos 0x60000000, /* nop */
127 1.1 christos };
128 1.1 christos
129 1.1 christos /* For executables, we have some additional relocations in
130 1.1 christos .rela.plt.unloaded, for the kernel loader. */
131 1.1 christos
132 1.1 christos /* The number of non-JMP_SLOT relocations per PLT0 slot. */
133 1.1 christos #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
134 1.1 christos /* The number of relocations in the PLTResolve slot. */
135 1.1 christos #define VXWORKS_PLTRESOLVE_RELOCS 2
136 1.1 christos /* The number of relocations in the PLTResolve slot when when creating
137 1.1 christos a shared library. */
138 1.1 christos #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
139 1.1 christos
140 1.1 christos /* Some instructions. */
141 1.1 christos #define ADDIS_11_11 0x3d6b0000
142 1.1 christos #define ADDIS_11_30 0x3d7e0000
143 1.1 christos #define ADDIS_12_12 0x3d8c0000
144 1.1 christos #define ADDI_11_11 0x396b0000
145 1.1 christos #define ADD_0_11_11 0x7c0b5a14
146 1.1 christos #define ADD_3_12_2 0x7c6c1214
147 1.1 christos #define ADD_11_0_11 0x7d605a14
148 1.1 christos #define B 0x48000000
149 1.3 christos #define BA 0x48000002
150 1.1 christos #define BCL_20_31 0x429f0005
151 1.1 christos #define BCTR 0x4e800420
152 1.1 christos #define BEQLR 0x4d820020
153 1.1 christos #define CMPWI_11_0 0x2c0b0000
154 1.1 christos #define LIS_11 0x3d600000
155 1.1 christos #define LIS_12 0x3d800000
156 1.1 christos #define LWZU_0_12 0x840c0000
157 1.1 christos #define LWZ_0_12 0x800c0000
158 1.1 christos #define LWZ_11_3 0x81630000
159 1.1 christos #define LWZ_11_11 0x816b0000
160 1.1 christos #define LWZ_11_30 0x817e0000
161 1.1 christos #define LWZ_12_3 0x81830000
162 1.1 christos #define LWZ_12_12 0x818c0000
163 1.1 christos #define MR_0_3 0x7c601b78
164 1.1 christos #define MR_3_0 0x7c030378
165 1.1 christos #define MFLR_0 0x7c0802a6
166 1.1 christos #define MFLR_12 0x7d8802a6
167 1.1 christos #define MTCTR_0 0x7c0903a6
168 1.1 christos #define MTCTR_11 0x7d6903a6
169 1.1 christos #define MTLR_0 0x7c0803a6
170 1.1 christos #define NOP 0x60000000
171 1.1 christos #define SUB_11_11_12 0x7d6c5850
172 1.1 christos
173 1.1 christos /* Offset of tp and dtp pointers from start of TLS block. */
174 1.1 christos #define TP_OFFSET 0x7000
175 1.1 christos #define DTP_OFFSET 0x8000
176 1.1 christos
177 1.1 christos /* The value of a defined global symbol. */
178 1.1 christos #define SYM_VAL(SYM) \
179 1.1 christos ((SYM)->root.u.def.section->output_section->vma \
180 1.1 christos + (SYM)->root.u.def.section->output_offset \
181 1.1 christos + (SYM)->root.u.def.value)
182 1.1 christos
183 1.1 christos static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
185 1.1 christos
186 1.1 christos static reloc_howto_type ppc_elf_howto_raw[] = {
187 1.1 christos /* This reloc does nothing. */
188 1.1 christos HOWTO (R_PPC_NONE, /* type */
189 1.5 christos 0, /* rightshift */
190 1.5 christos 3, /* size (0 = byte, 1 = short, 2 = long) */
191 1.1 christos 0, /* bitsize */
192 1.1 christos FALSE, /* pc_relative */
193 1.3 christos 0, /* bitpos */
194 1.1 christos complain_overflow_dont, /* complain_on_overflow */
195 1.1 christos bfd_elf_generic_reloc, /* special_function */
196 1.1 christos "R_PPC_NONE", /* name */
197 1.1 christos FALSE, /* partial_inplace */
198 1.1 christos 0, /* src_mask */
199 1.1 christos 0, /* dst_mask */
200 1.1 christos FALSE), /* pcrel_offset */
201 1.1 christos
202 1.1 christos /* A standard 32 bit relocation. */
203 1.1 christos HOWTO (R_PPC_ADDR32, /* type */
204 1.1 christos 0, /* rightshift */
205 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
206 1.1 christos 32, /* bitsize */
207 1.1 christos FALSE, /* pc_relative */
208 1.3 christos 0, /* bitpos */
209 1.1 christos complain_overflow_dont, /* complain_on_overflow */
210 1.1 christos bfd_elf_generic_reloc, /* special_function */
211 1.1 christos "R_PPC_ADDR32", /* name */
212 1.1 christos FALSE, /* partial_inplace */
213 1.1 christos 0, /* src_mask */
214 1.1 christos 0xffffffff, /* dst_mask */
215 1.1 christos FALSE), /* pcrel_offset */
216 1.1 christos
217 1.1 christos /* An absolute 26 bit branch; the lower two bits must be zero.
218 1.1 christos FIXME: we don't check that, we just clear them. */
219 1.1 christos HOWTO (R_PPC_ADDR24, /* type */
220 1.1 christos 0, /* rightshift */
221 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
222 1.1 christos 26, /* bitsize */
223 1.1 christos FALSE, /* pc_relative */
224 1.3 christos 0, /* bitpos */
225 1.1 christos complain_overflow_signed, /* complain_on_overflow */
226 1.1 christos bfd_elf_generic_reloc, /* special_function */
227 1.1 christos "R_PPC_ADDR24", /* name */
228 1.1 christos FALSE, /* partial_inplace */
229 1.1 christos 0, /* src_mask */
230 1.1 christos 0x3fffffc, /* dst_mask */
231 1.1 christos FALSE), /* pcrel_offset */
232 1.1 christos
233 1.1 christos /* A standard 16 bit relocation. */
234 1.1 christos HOWTO (R_PPC_ADDR16, /* type */
235 1.1 christos 0, /* rightshift */
236 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
237 1.1 christos 16, /* bitsize */
238 1.1 christos FALSE, /* pc_relative */
239 1.1 christos 0, /* bitpos */
240 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
241 1.1 christos bfd_elf_generic_reloc, /* special_function */
242 1.1 christos "R_PPC_ADDR16", /* name */
243 1.1 christos FALSE, /* partial_inplace */
244 1.1 christos 0, /* src_mask */
245 1.1 christos 0xffff, /* dst_mask */
246 1.1 christos FALSE), /* pcrel_offset */
247 1.1 christos
248 1.1 christos /* A 16 bit relocation without overflow. */
249 1.1 christos HOWTO (R_PPC_ADDR16_LO, /* type */
250 1.1 christos 0, /* rightshift */
251 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
252 1.1 christos 16, /* bitsize */
253 1.1 christos FALSE, /* pc_relative */
254 1.1 christos 0, /* bitpos */
255 1.1 christos complain_overflow_dont,/* complain_on_overflow */
256 1.1 christos bfd_elf_generic_reloc, /* special_function */
257 1.1 christos "R_PPC_ADDR16_LO", /* name */
258 1.1 christos FALSE, /* partial_inplace */
259 1.1 christos 0, /* src_mask */
260 1.1 christos 0xffff, /* dst_mask */
261 1.1 christos FALSE), /* pcrel_offset */
262 1.1 christos
263 1.1 christos /* The high order 16 bits of an address. */
264 1.1 christos HOWTO (R_PPC_ADDR16_HI, /* type */
265 1.1 christos 16, /* rightshift */
266 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
267 1.1 christos 16, /* bitsize */
268 1.1 christos FALSE, /* pc_relative */
269 1.1 christos 0, /* bitpos */
270 1.1 christos complain_overflow_dont, /* complain_on_overflow */
271 1.1 christos bfd_elf_generic_reloc, /* special_function */
272 1.1 christos "R_PPC_ADDR16_HI", /* name */
273 1.1 christos FALSE, /* partial_inplace */
274 1.1 christos 0, /* src_mask */
275 1.1 christos 0xffff, /* dst_mask */
276 1.1 christos FALSE), /* pcrel_offset */
277 1.1 christos
278 1.1 christos /* The high order 16 bits of an address, plus 1 if the contents of
279 1.1 christos the low 16 bits, treated as a signed number, is negative. */
280 1.1 christos HOWTO (R_PPC_ADDR16_HA, /* type */
281 1.1 christos 16, /* rightshift */
282 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
283 1.1 christos 16, /* bitsize */
284 1.1 christos FALSE, /* pc_relative */
285 1.1 christos 0, /* bitpos */
286 1.1 christos complain_overflow_dont, /* complain_on_overflow */
287 1.1 christos ppc_elf_addr16_ha_reloc, /* special_function */
288 1.1 christos "R_PPC_ADDR16_HA", /* name */
289 1.1 christos FALSE, /* partial_inplace */
290 1.1 christos 0, /* src_mask */
291 1.1 christos 0xffff, /* dst_mask */
292 1.1 christos FALSE), /* pcrel_offset */
293 1.1 christos
294 1.1 christos /* An absolute 16 bit branch; the lower two bits must be zero.
295 1.1 christos FIXME: we don't check that, we just clear them. */
296 1.1 christos HOWTO (R_PPC_ADDR14, /* type */
297 1.1 christos 0, /* rightshift */
298 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
299 1.1 christos 16, /* bitsize */
300 1.1 christos FALSE, /* pc_relative */
301 1.3 christos 0, /* bitpos */
302 1.1 christos complain_overflow_signed, /* complain_on_overflow */
303 1.1 christos bfd_elf_generic_reloc, /* special_function */
304 1.1 christos "R_PPC_ADDR14", /* name */
305 1.1 christos FALSE, /* partial_inplace */
306 1.1 christos 0, /* src_mask */
307 1.1 christos 0xfffc, /* dst_mask */
308 1.1 christos FALSE), /* pcrel_offset */
309 1.1 christos
310 1.1 christos /* An absolute 16 bit branch, for which bit 10 should be set to
311 1.1 christos indicate that the branch is expected to be taken. The lower two
312 1.1 christos bits must be zero. */
313 1.1 christos HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
314 1.1 christos 0, /* rightshift */
315 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
316 1.1 christos 16, /* bitsize */
317 1.1 christos FALSE, /* pc_relative */
318 1.3 christos 0, /* bitpos */
319 1.1 christos complain_overflow_signed, /* complain_on_overflow */
320 1.1 christos bfd_elf_generic_reloc, /* special_function */
321 1.1 christos "R_PPC_ADDR14_BRTAKEN",/* name */
322 1.1 christos FALSE, /* partial_inplace */
323 1.1 christos 0, /* src_mask */
324 1.1 christos 0xfffc, /* dst_mask */
325 1.1 christos FALSE), /* pcrel_offset */
326 1.1 christos
327 1.1 christos /* An absolute 16 bit branch, for which bit 10 should be set to
328 1.1 christos indicate that the branch is not expected to be taken. The lower
329 1.1 christos two bits must be zero. */
330 1.1 christos HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
331 1.1 christos 0, /* rightshift */
332 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
333 1.1 christos 16, /* bitsize */
334 1.1 christos FALSE, /* pc_relative */
335 1.3 christos 0, /* bitpos */
336 1.1 christos complain_overflow_signed, /* complain_on_overflow */
337 1.1 christos bfd_elf_generic_reloc, /* special_function */
338 1.1 christos "R_PPC_ADDR14_BRNTAKEN",/* name */
339 1.1 christos FALSE, /* partial_inplace */
340 1.1 christos 0, /* src_mask */
341 1.1 christos 0xfffc, /* dst_mask */
342 1.1 christos FALSE), /* pcrel_offset */
343 1.1 christos
344 1.1 christos /* A relative 26 bit branch; the lower two bits must be zero. */
345 1.1 christos HOWTO (R_PPC_REL24, /* type */
346 1.1 christos 0, /* rightshift */
347 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
348 1.1 christos 26, /* bitsize */
349 1.1 christos TRUE, /* pc_relative */
350 1.1 christos 0, /* bitpos */
351 1.1 christos complain_overflow_signed, /* complain_on_overflow */
352 1.1 christos bfd_elf_generic_reloc, /* special_function */
353 1.1 christos "R_PPC_REL24", /* name */
354 1.1 christos FALSE, /* partial_inplace */
355 1.1 christos 0, /* src_mask */
356 1.1 christos 0x3fffffc, /* dst_mask */
357 1.1 christos TRUE), /* pcrel_offset */
358 1.1 christos
359 1.1 christos /* A relative 16 bit branch; the lower two bits must be zero. */
360 1.1 christos HOWTO (R_PPC_REL14, /* type */
361 1.1 christos 0, /* rightshift */
362 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
363 1.1 christos 16, /* bitsize */
364 1.1 christos TRUE, /* pc_relative */
365 1.1 christos 0, /* bitpos */
366 1.1 christos complain_overflow_signed, /* complain_on_overflow */
367 1.1 christos bfd_elf_generic_reloc, /* special_function */
368 1.1 christos "R_PPC_REL14", /* name */
369 1.1 christos FALSE, /* partial_inplace */
370 1.1 christos 0, /* src_mask */
371 1.1 christos 0xfffc, /* dst_mask */
372 1.1 christos TRUE), /* pcrel_offset */
373 1.1 christos
374 1.1 christos /* A relative 16 bit branch. Bit 10 should be set to indicate that
375 1.1 christos the branch is expected to be taken. The lower two bits must be
376 1.1 christos zero. */
377 1.1 christos HOWTO (R_PPC_REL14_BRTAKEN, /* type */
378 1.1 christos 0, /* rightshift */
379 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
380 1.1 christos 16, /* bitsize */
381 1.1 christos TRUE, /* pc_relative */
382 1.1 christos 0, /* bitpos */
383 1.1 christos complain_overflow_signed, /* complain_on_overflow */
384 1.1 christos bfd_elf_generic_reloc, /* special_function */
385 1.1 christos "R_PPC_REL14_BRTAKEN", /* name */
386 1.1 christos FALSE, /* partial_inplace */
387 1.1 christos 0, /* src_mask */
388 1.1 christos 0xfffc, /* dst_mask */
389 1.1 christos TRUE), /* pcrel_offset */
390 1.1 christos
391 1.1 christos /* A relative 16 bit branch. Bit 10 should be set to indicate that
392 1.1 christos the branch is not expected to be taken. The lower two bits must
393 1.1 christos be zero. */
394 1.1 christos HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
395 1.1 christos 0, /* rightshift */
396 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
397 1.1 christos 16, /* bitsize */
398 1.1 christos TRUE, /* pc_relative */
399 1.1 christos 0, /* bitpos */
400 1.1 christos complain_overflow_signed, /* complain_on_overflow */
401 1.1 christos bfd_elf_generic_reloc, /* special_function */
402 1.1 christos "R_PPC_REL14_BRNTAKEN",/* name */
403 1.1 christos FALSE, /* partial_inplace */
404 1.1 christos 0, /* src_mask */
405 1.1 christos 0xfffc, /* dst_mask */
406 1.1 christos TRUE), /* pcrel_offset */
407 1.1 christos
408 1.1 christos /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
409 1.1 christos symbol. */
410 1.1 christos HOWTO (R_PPC_GOT16, /* type */
411 1.1 christos 0, /* rightshift */
412 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
413 1.1 christos 16, /* bitsize */
414 1.1 christos FALSE, /* pc_relative */
415 1.1 christos 0, /* bitpos */
416 1.6 christos complain_overflow_signed, /* complain_on_overflow */
417 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
418 1.1 christos "R_PPC_GOT16", /* name */
419 1.1 christos FALSE, /* partial_inplace */
420 1.1 christos 0, /* src_mask */
421 1.1 christos 0xffff, /* dst_mask */
422 1.1 christos FALSE), /* pcrel_offset */
423 1.1 christos
424 1.1 christos /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
425 1.1 christos the symbol. */
426 1.1 christos HOWTO (R_PPC_GOT16_LO, /* type */
427 1.1 christos 0, /* rightshift */
428 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
429 1.1 christos 16, /* bitsize */
430 1.1 christos FALSE, /* pc_relative */
431 1.1 christos 0, /* bitpos */
432 1.6 christos complain_overflow_dont, /* complain_on_overflow */
433 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
434 1.1 christos "R_PPC_GOT16_LO", /* name */
435 1.1 christos FALSE, /* partial_inplace */
436 1.1 christos 0, /* src_mask */
437 1.1 christos 0xffff, /* dst_mask */
438 1.1 christos FALSE), /* pcrel_offset */
439 1.1 christos
440 1.1 christos /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
441 1.1 christos the symbol. */
442 1.1 christos HOWTO (R_PPC_GOT16_HI, /* type */
443 1.1 christos 16, /* rightshift */
444 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
445 1.1 christos 16, /* bitsize */
446 1.1 christos FALSE, /* pc_relative */
447 1.3 christos 0, /* bitpos */
448 1.6 christos complain_overflow_dont, /* complain_on_overflow */
449 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
450 1.1 christos "R_PPC_GOT16_HI", /* name */
451 1.1 christos FALSE, /* partial_inplace */
452 1.1 christos 0, /* src_mask */
453 1.1 christos 0xffff, /* dst_mask */
454 1.1 christos FALSE), /* pcrel_offset */
455 1.1 christos
456 1.1 christos /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
457 1.1 christos the symbol. */
458 1.1 christos HOWTO (R_PPC_GOT16_HA, /* type */
459 1.1 christos 16, /* rightshift */
460 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
461 1.1 christos 16, /* bitsize */
462 1.1 christos FALSE, /* pc_relative */
463 1.3 christos 0, /* bitpos */
464 1.6 christos complain_overflow_dont, /* complain_on_overflow */
465 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
466 1.1 christos "R_PPC_GOT16_HA", /* name */
467 1.1 christos FALSE, /* partial_inplace */
468 1.1 christos 0, /* src_mask */
469 1.1 christos 0xffff, /* dst_mask */
470 1.1 christos FALSE), /* pcrel_offset */
471 1.1 christos
472 1.1 christos /* Like R_PPC_REL24, but referring to the procedure linkage table
473 1.1 christos entry for the symbol. */
474 1.1 christos HOWTO (R_PPC_PLTREL24, /* type */
475 1.1 christos 0, /* rightshift */
476 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
477 1.1 christos 26, /* bitsize */
478 1.1 christos TRUE, /* pc_relative */
479 1.6 christos 0, /* bitpos */
480 1.6 christos complain_overflow_signed, /* complain_on_overflow */
481 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
482 1.1 christos "R_PPC_PLTREL24", /* name */
483 1.1 christos FALSE, /* partial_inplace */
484 1.1 christos 0, /* src_mask */
485 1.1 christos 0x3fffffc, /* dst_mask */
486 1.1 christos TRUE), /* pcrel_offset */
487 1.1 christos
488 1.1 christos /* This is used only by the dynamic linker. The symbol should exist
489 1.1 christos both in the object being run and in some shared library. The
490 1.1 christos dynamic linker copies the data addressed by the symbol from the
491 1.1 christos shared library into the object, because the object being
492 1.1 christos run has to have the data at some particular address. */
493 1.1 christos HOWTO (R_PPC_COPY, /* type */
494 1.1 christos 0, /* rightshift */
495 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
496 1.1 christos 32, /* bitsize */
497 1.1 christos FALSE, /* pc_relative */
498 1.3 christos 0, /* bitpos */
499 1.6 christos complain_overflow_dont, /* complain_on_overflow */
500 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
501 1.1 christos "R_PPC_COPY", /* name */
502 1.1 christos FALSE, /* partial_inplace */
503 1.1 christos 0, /* src_mask */
504 1.1 christos 0, /* dst_mask */
505 1.1 christos FALSE), /* pcrel_offset */
506 1.1 christos
507 1.1 christos /* Like R_PPC_ADDR32, but used when setting global offset table
508 1.1 christos entries. */
509 1.1 christos HOWTO (R_PPC_GLOB_DAT, /* type */
510 1.1 christos 0, /* rightshift */
511 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
512 1.1 christos 32, /* bitsize */
513 1.1 christos FALSE, /* pc_relative */
514 1.3 christos 0, /* bitpos */
515 1.6 christos complain_overflow_dont, /* complain_on_overflow */
516 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
517 1.1 christos "R_PPC_GLOB_DAT", /* name */
518 1.1 christos FALSE, /* partial_inplace */
519 1.1 christos 0, /* src_mask */
520 1.1 christos 0xffffffff, /* dst_mask */
521 1.1 christos FALSE), /* pcrel_offset */
522 1.1 christos
523 1.1 christos /* Marks a procedure linkage table entry for a symbol. */
524 1.1 christos HOWTO (R_PPC_JMP_SLOT, /* type */
525 1.1 christos 0, /* rightshift */
526 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
527 1.1 christos 32, /* bitsize */
528 1.1 christos FALSE, /* pc_relative */
529 1.3 christos 0, /* bitpos */
530 1.6 christos complain_overflow_dont, /* complain_on_overflow */
531 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
532 1.1 christos "R_PPC_JMP_SLOT", /* name */
533 1.1 christos FALSE, /* partial_inplace */
534 1.1 christos 0, /* src_mask */
535 1.1 christos 0, /* dst_mask */
536 1.1 christos FALSE), /* pcrel_offset */
537 1.1 christos
538 1.1 christos /* Used only by the dynamic linker. When the object is run, this
539 1.1 christos longword is set to the load address of the object, plus the
540 1.1 christos addend. */
541 1.1 christos HOWTO (R_PPC_RELATIVE, /* type */
542 1.1 christos 0, /* rightshift */
543 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
544 1.1 christos 32, /* bitsize */
545 1.1 christos FALSE, /* pc_relative */
546 1.3 christos 0, /* bitpos */
547 1.1 christos complain_overflow_dont, /* complain_on_overflow */
548 1.1 christos bfd_elf_generic_reloc, /* special_function */
549 1.1 christos "R_PPC_RELATIVE", /* name */
550 1.1 christos FALSE, /* partial_inplace */
551 1.1 christos 0, /* src_mask */
552 1.1 christos 0xffffffff, /* dst_mask */
553 1.1 christos FALSE), /* pcrel_offset */
554 1.1 christos
555 1.1 christos /* Like R_PPC_REL24, but uses the value of the symbol within the
556 1.1 christos object rather than the final value. Normally used for
557 1.1 christos _GLOBAL_OFFSET_TABLE_. */
558 1.1 christos HOWTO (R_PPC_LOCAL24PC, /* type */
559 1.1 christos 0, /* rightshift */
560 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
561 1.1 christos 26, /* bitsize */
562 1.1 christos TRUE, /* pc_relative */
563 1.1 christos 0, /* bitpos */
564 1.1 christos complain_overflow_signed, /* complain_on_overflow */
565 1.1 christos bfd_elf_generic_reloc, /* special_function */
566 1.1 christos "R_PPC_LOCAL24PC", /* name */
567 1.1 christos FALSE, /* partial_inplace */
568 1.1 christos 0, /* src_mask */
569 1.1 christos 0x3fffffc, /* dst_mask */
570 1.1 christos TRUE), /* pcrel_offset */
571 1.1 christos
572 1.1 christos /* Like R_PPC_ADDR32, but may be unaligned. */
573 1.1 christos HOWTO (R_PPC_UADDR32, /* type */
574 1.1 christos 0, /* rightshift */
575 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
576 1.1 christos 32, /* bitsize */
577 1.1 christos FALSE, /* pc_relative */
578 1.3 christos 0, /* bitpos */
579 1.1 christos complain_overflow_dont, /* complain_on_overflow */
580 1.1 christos bfd_elf_generic_reloc, /* special_function */
581 1.1 christos "R_PPC_UADDR32", /* name */
582 1.1 christos FALSE, /* partial_inplace */
583 1.1 christos 0, /* src_mask */
584 1.1 christos 0xffffffff, /* dst_mask */
585 1.1 christos FALSE), /* pcrel_offset */
586 1.1 christos
587 1.1 christos /* Like R_PPC_ADDR16, but may be unaligned. */
588 1.1 christos HOWTO (R_PPC_UADDR16, /* type */
589 1.1 christos 0, /* rightshift */
590 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
591 1.1 christos 16, /* bitsize */
592 1.1 christos FALSE, /* pc_relative */
593 1.1 christos 0, /* bitpos */
594 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
595 1.1 christos bfd_elf_generic_reloc, /* special_function */
596 1.1 christos "R_PPC_UADDR16", /* name */
597 1.1 christos FALSE, /* partial_inplace */
598 1.1 christos 0, /* src_mask */
599 1.1 christos 0xffff, /* dst_mask */
600 1.1 christos FALSE), /* pcrel_offset */
601 1.1 christos
602 1.1 christos /* 32-bit PC relative */
603 1.1 christos HOWTO (R_PPC_REL32, /* type */
604 1.1 christos 0, /* rightshift */
605 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
606 1.1 christos 32, /* bitsize */
607 1.1 christos TRUE, /* pc_relative */
608 1.3 christos 0, /* bitpos */
609 1.1 christos complain_overflow_dont, /* complain_on_overflow */
610 1.1 christos bfd_elf_generic_reloc, /* special_function */
611 1.1 christos "R_PPC_REL32", /* name */
612 1.1 christos FALSE, /* partial_inplace */
613 1.1 christos 0, /* src_mask */
614 1.1 christos 0xffffffff, /* dst_mask */
615 1.1 christos TRUE), /* pcrel_offset */
616 1.1 christos
617 1.1 christos /* 32-bit relocation to the symbol's procedure linkage table.
618 1.1 christos FIXME: not supported. */
619 1.1 christos HOWTO (R_PPC_PLT32, /* type */
620 1.1 christos 0, /* rightshift */
621 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
622 1.1 christos 32, /* bitsize */
623 1.1 christos FALSE, /* pc_relative */
624 1.3 christos 0, /* bitpos */
625 1.6 christos complain_overflow_dont, /* complain_on_overflow */
626 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
627 1.1 christos "R_PPC_PLT32", /* name */
628 1.1 christos FALSE, /* partial_inplace */
629 1.1 christos 0, /* src_mask */
630 1.1 christos 0, /* dst_mask */
631 1.1 christos FALSE), /* pcrel_offset */
632 1.1 christos
633 1.1 christos /* 32-bit PC relative relocation to the symbol's procedure linkage table.
634 1.1 christos FIXME: not supported. */
635 1.1 christos HOWTO (R_PPC_PLTREL32, /* type */
636 1.1 christos 0, /* rightshift */
637 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
638 1.1 christos 32, /* bitsize */
639 1.1 christos TRUE, /* pc_relative */
640 1.3 christos 0, /* bitpos */
641 1.6 christos complain_overflow_dont, /* complain_on_overflow */
642 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
643 1.1 christos "R_PPC_PLTREL32", /* name */
644 1.1 christos FALSE, /* partial_inplace */
645 1.1 christos 0, /* src_mask */
646 1.1 christos 0, /* dst_mask */
647 1.1 christos TRUE), /* pcrel_offset */
648 1.1 christos
649 1.1 christos /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
650 1.1 christos the symbol. */
651 1.1 christos HOWTO (R_PPC_PLT16_LO, /* type */
652 1.1 christos 0, /* rightshift */
653 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
654 1.1 christos 16, /* bitsize */
655 1.1 christos FALSE, /* pc_relative */
656 1.1 christos 0, /* bitpos */
657 1.6 christos complain_overflow_dont, /* complain_on_overflow */
658 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
659 1.1 christos "R_PPC_PLT16_LO", /* name */
660 1.1 christos FALSE, /* partial_inplace */
661 1.1 christos 0, /* src_mask */
662 1.1 christos 0xffff, /* dst_mask */
663 1.1 christos FALSE), /* pcrel_offset */
664 1.1 christos
665 1.1 christos /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
666 1.1 christos the symbol. */
667 1.1 christos HOWTO (R_PPC_PLT16_HI, /* type */
668 1.1 christos 16, /* rightshift */
669 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
670 1.1 christos 16, /* bitsize */
671 1.1 christos FALSE, /* pc_relative */
672 1.3 christos 0, /* bitpos */
673 1.6 christos complain_overflow_dont, /* complain_on_overflow */
674 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
675 1.1 christos "R_PPC_PLT16_HI", /* name */
676 1.1 christos FALSE, /* partial_inplace */
677 1.1 christos 0, /* src_mask */
678 1.1 christos 0xffff, /* dst_mask */
679 1.1 christos FALSE), /* pcrel_offset */
680 1.1 christos
681 1.1 christos /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
682 1.1 christos the symbol. */
683 1.1 christos HOWTO (R_PPC_PLT16_HA, /* type */
684 1.1 christos 16, /* rightshift */
685 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
686 1.1 christos 16, /* bitsize */
687 1.1 christos FALSE, /* pc_relative */
688 1.3 christos 0, /* bitpos */
689 1.6 christos complain_overflow_dont, /* complain_on_overflow */
690 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
691 1.1 christos "R_PPC_PLT16_HA", /* name */
692 1.1 christos FALSE, /* partial_inplace */
693 1.1 christos 0, /* src_mask */
694 1.1 christos 0xffff, /* dst_mask */
695 1.1 christos FALSE), /* pcrel_offset */
696 1.1 christos
697 1.1 christos /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
698 1.1 christos small data items. */
699 1.1 christos HOWTO (R_PPC_SDAREL16, /* type */
700 1.1 christos 0, /* rightshift */
701 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
702 1.1 christos 16, /* bitsize */
703 1.1 christos FALSE, /* pc_relative */
704 1.1 christos 0, /* bitpos */
705 1.6 christos complain_overflow_signed, /* complain_on_overflow */
706 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
707 1.1 christos "R_PPC_SDAREL16", /* name */
708 1.1 christos FALSE, /* partial_inplace */
709 1.1 christos 0, /* src_mask */
710 1.1 christos 0xffff, /* dst_mask */
711 1.1 christos FALSE), /* pcrel_offset */
712 1.1 christos
713 1.1 christos /* 16-bit section relative relocation. */
714 1.1 christos HOWTO (R_PPC_SECTOFF, /* type */
715 1.1 christos 0, /* rightshift */
716 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
717 1.1 christos 16, /* bitsize */
718 1.1 christos FALSE, /* pc_relative */
719 1.3 christos 0, /* bitpos */
720 1.6 christos complain_overflow_signed, /* complain_on_overflow */
721 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
722 1.1 christos "R_PPC_SECTOFF", /* name */
723 1.1 christos FALSE, /* partial_inplace */
724 1.1 christos 0, /* src_mask */
725 1.1 christos 0xffff, /* dst_mask */
726 1.1 christos FALSE), /* pcrel_offset */
727 1.1 christos
728 1.1 christos /* 16-bit lower half section relative relocation. */
729 1.1 christos HOWTO (R_PPC_SECTOFF_LO, /* type */
730 1.1 christos 0, /* rightshift */
731 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
732 1.1 christos 16, /* bitsize */
733 1.1 christos FALSE, /* pc_relative */
734 1.1 christos 0, /* bitpos */
735 1.6 christos complain_overflow_dont, /* complain_on_overflow */
736 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
737 1.1 christos "R_PPC_SECTOFF_LO", /* name */
738 1.1 christos FALSE, /* partial_inplace */
739 1.1 christos 0, /* src_mask */
740 1.1 christos 0xffff, /* dst_mask */
741 1.1 christos FALSE), /* pcrel_offset */
742 1.1 christos
743 1.1 christos /* 16-bit upper half section relative relocation. */
744 1.1 christos HOWTO (R_PPC_SECTOFF_HI, /* type */
745 1.1 christos 16, /* rightshift */
746 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
747 1.1 christos 16, /* bitsize */
748 1.1 christos FALSE, /* pc_relative */
749 1.3 christos 0, /* bitpos */
750 1.6 christos complain_overflow_dont, /* complain_on_overflow */
751 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
752 1.1 christos "R_PPC_SECTOFF_HI", /* name */
753 1.1 christos FALSE, /* partial_inplace */
754 1.1 christos 0, /* src_mask */
755 1.1 christos 0xffff, /* dst_mask */
756 1.1 christos FALSE), /* pcrel_offset */
757 1.1 christos
758 1.1 christos /* 16-bit upper half adjusted section relative relocation. */
759 1.1 christos HOWTO (R_PPC_SECTOFF_HA, /* type */
760 1.1 christos 16, /* rightshift */
761 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
762 1.1 christos 16, /* bitsize */
763 1.1 christos FALSE, /* pc_relative */
764 1.3 christos 0, /* bitpos */
765 1.6 christos complain_overflow_dont, /* complain_on_overflow */
766 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
767 1.1 christos "R_PPC_SECTOFF_HA", /* name */
768 1.1 christos FALSE, /* partial_inplace */
769 1.1 christos 0, /* src_mask */
770 1.1 christos 0xffff, /* dst_mask */
771 1.1 christos FALSE), /* pcrel_offset */
772 1.1 christos
773 1.1 christos /* Marker relocs for TLS. */
774 1.1 christos HOWTO (R_PPC_TLS,
775 1.1 christos 0, /* rightshift */
776 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
777 1.1 christos 32, /* bitsize */
778 1.1 christos FALSE, /* pc_relative */
779 1.1 christos 0, /* bitpos */
780 1.1 christos complain_overflow_dont, /* complain_on_overflow */
781 1.1 christos bfd_elf_generic_reloc, /* special_function */
782 1.1 christos "R_PPC_TLS", /* name */
783 1.1 christos FALSE, /* partial_inplace */
784 1.1 christos 0, /* src_mask */
785 1.1 christos 0, /* dst_mask */
786 1.1 christos FALSE), /* pcrel_offset */
787 1.1 christos
788 1.1 christos HOWTO (R_PPC_TLSGD,
789 1.1 christos 0, /* rightshift */
790 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
791 1.1 christos 32, /* bitsize */
792 1.1 christos FALSE, /* pc_relative */
793 1.1 christos 0, /* bitpos */
794 1.1 christos complain_overflow_dont, /* complain_on_overflow */
795 1.1 christos bfd_elf_generic_reloc, /* special_function */
796 1.1 christos "R_PPC_TLSGD", /* name */
797 1.1 christos FALSE, /* partial_inplace */
798 1.1 christos 0, /* src_mask */
799 1.1 christos 0, /* dst_mask */
800 1.1 christos FALSE), /* pcrel_offset */
801 1.1 christos
802 1.1 christos HOWTO (R_PPC_TLSLD,
803 1.1 christos 0, /* rightshift */
804 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
805 1.1 christos 32, /* bitsize */
806 1.1 christos FALSE, /* pc_relative */
807 1.1 christos 0, /* bitpos */
808 1.1 christos complain_overflow_dont, /* complain_on_overflow */
809 1.1 christos bfd_elf_generic_reloc, /* special_function */
810 1.1 christos "R_PPC_TLSLD", /* name */
811 1.1 christos FALSE, /* partial_inplace */
812 1.1 christos 0, /* src_mask */
813 1.1 christos 0, /* dst_mask */
814 1.1 christos FALSE), /* pcrel_offset */
815 1.1 christos
816 1.1 christos /* Computes the load module index of the load module that contains the
817 1.1 christos definition of its TLS sym. */
818 1.1 christos HOWTO (R_PPC_DTPMOD32,
819 1.1 christos 0, /* rightshift */
820 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
821 1.1 christos 32, /* bitsize */
822 1.1 christos FALSE, /* pc_relative */
823 1.1 christos 0, /* bitpos */
824 1.1 christos complain_overflow_dont, /* complain_on_overflow */
825 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
826 1.1 christos "R_PPC_DTPMOD32", /* name */
827 1.1 christos FALSE, /* partial_inplace */
828 1.1 christos 0, /* src_mask */
829 1.1 christos 0xffffffff, /* dst_mask */
830 1.1 christos FALSE), /* pcrel_offset */
831 1.1 christos
832 1.1 christos /* Computes a dtv-relative displacement, the difference between the value
833 1.1 christos of sym+add and the base address of the thread-local storage block that
834 1.1 christos contains the definition of sym, minus 0x8000. */
835 1.1 christos HOWTO (R_PPC_DTPREL32,
836 1.1 christos 0, /* rightshift */
837 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
838 1.1 christos 32, /* bitsize */
839 1.1 christos FALSE, /* pc_relative */
840 1.1 christos 0, /* bitpos */
841 1.1 christos complain_overflow_dont, /* complain_on_overflow */
842 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
843 1.1 christos "R_PPC_DTPREL32", /* name */
844 1.1 christos FALSE, /* partial_inplace */
845 1.1 christos 0, /* src_mask */
846 1.1 christos 0xffffffff, /* dst_mask */
847 1.1 christos FALSE), /* pcrel_offset */
848 1.1 christos
849 1.1 christos /* A 16 bit dtprel reloc. */
850 1.1 christos HOWTO (R_PPC_DTPREL16,
851 1.1 christos 0, /* rightshift */
852 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
853 1.1 christos 16, /* bitsize */
854 1.1 christos FALSE, /* pc_relative */
855 1.1 christos 0, /* bitpos */
856 1.1 christos complain_overflow_signed, /* complain_on_overflow */
857 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
858 1.1 christos "R_PPC_DTPREL16", /* name */
859 1.1 christos FALSE, /* partial_inplace */
860 1.1 christos 0, /* src_mask */
861 1.1 christos 0xffff, /* dst_mask */
862 1.1 christos FALSE), /* pcrel_offset */
863 1.1 christos
864 1.1 christos /* Like DTPREL16, but no overflow. */
865 1.1 christos HOWTO (R_PPC_DTPREL16_LO,
866 1.1 christos 0, /* rightshift */
867 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
868 1.1 christos 16, /* bitsize */
869 1.1 christos FALSE, /* pc_relative */
870 1.1 christos 0, /* bitpos */
871 1.1 christos complain_overflow_dont, /* complain_on_overflow */
872 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
873 1.1 christos "R_PPC_DTPREL16_LO", /* name */
874 1.1 christos FALSE, /* partial_inplace */
875 1.1 christos 0, /* src_mask */
876 1.1 christos 0xffff, /* dst_mask */
877 1.1 christos FALSE), /* pcrel_offset */
878 1.1 christos
879 1.1 christos /* Like DTPREL16_LO, but next higher group of 16 bits. */
880 1.1 christos HOWTO (R_PPC_DTPREL16_HI,
881 1.1 christos 16, /* rightshift */
882 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
883 1.1 christos 16, /* bitsize */
884 1.1 christos FALSE, /* pc_relative */
885 1.1 christos 0, /* bitpos */
886 1.1 christos complain_overflow_dont, /* complain_on_overflow */
887 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
888 1.1 christos "R_PPC_DTPREL16_HI", /* name */
889 1.1 christos FALSE, /* partial_inplace */
890 1.1 christos 0, /* src_mask */
891 1.1 christos 0xffff, /* dst_mask */
892 1.1 christos FALSE), /* pcrel_offset */
893 1.1 christos
894 1.1 christos /* Like DTPREL16_HI, but adjust for low 16 bits. */
895 1.1 christos HOWTO (R_PPC_DTPREL16_HA,
896 1.1 christos 16, /* rightshift */
897 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
898 1.1 christos 16, /* bitsize */
899 1.1 christos FALSE, /* pc_relative */
900 1.1 christos 0, /* bitpos */
901 1.1 christos complain_overflow_dont, /* complain_on_overflow */
902 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
903 1.1 christos "R_PPC_DTPREL16_HA", /* name */
904 1.1 christos FALSE, /* partial_inplace */
905 1.1 christos 0, /* src_mask */
906 1.1 christos 0xffff, /* dst_mask */
907 1.1 christos FALSE), /* pcrel_offset */
908 1.1 christos
909 1.1 christos /* Computes a tp-relative displacement, the difference between the value of
910 1.1 christos sym+add and the value of the thread pointer (r13). */
911 1.1 christos HOWTO (R_PPC_TPREL32,
912 1.1 christos 0, /* rightshift */
913 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
914 1.1 christos 32, /* bitsize */
915 1.1 christos FALSE, /* pc_relative */
916 1.1 christos 0, /* bitpos */
917 1.1 christos complain_overflow_dont, /* complain_on_overflow */
918 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
919 1.1 christos "R_PPC_TPREL32", /* name */
920 1.1 christos FALSE, /* partial_inplace */
921 1.1 christos 0, /* src_mask */
922 1.1 christos 0xffffffff, /* dst_mask */
923 1.1 christos FALSE), /* pcrel_offset */
924 1.1 christos
925 1.1 christos /* A 16 bit tprel reloc. */
926 1.1 christos HOWTO (R_PPC_TPREL16,
927 1.1 christos 0, /* rightshift */
928 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
929 1.1 christos 16, /* bitsize */
930 1.1 christos FALSE, /* pc_relative */
931 1.1 christos 0, /* bitpos */
932 1.1 christos complain_overflow_signed, /* complain_on_overflow */
933 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
934 1.1 christos "R_PPC_TPREL16", /* name */
935 1.1 christos FALSE, /* partial_inplace */
936 1.1 christos 0, /* src_mask */
937 1.1 christos 0xffff, /* dst_mask */
938 1.1 christos FALSE), /* pcrel_offset */
939 1.1 christos
940 1.1 christos /* Like TPREL16, but no overflow. */
941 1.1 christos HOWTO (R_PPC_TPREL16_LO,
942 1.1 christos 0, /* rightshift */
943 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
944 1.1 christos 16, /* bitsize */
945 1.1 christos FALSE, /* pc_relative */
946 1.1 christos 0, /* bitpos */
947 1.1 christos complain_overflow_dont, /* complain_on_overflow */
948 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
949 1.1 christos "R_PPC_TPREL16_LO", /* name */
950 1.1 christos FALSE, /* partial_inplace */
951 1.1 christos 0, /* src_mask */
952 1.1 christos 0xffff, /* dst_mask */
953 1.1 christos FALSE), /* pcrel_offset */
954 1.1 christos
955 1.1 christos /* Like TPREL16_LO, but next higher group of 16 bits. */
956 1.1 christos HOWTO (R_PPC_TPREL16_HI,
957 1.1 christos 16, /* rightshift */
958 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
959 1.1 christos 16, /* bitsize */
960 1.1 christos FALSE, /* pc_relative */
961 1.1 christos 0, /* bitpos */
962 1.1 christos complain_overflow_dont, /* complain_on_overflow */
963 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
964 1.1 christos "R_PPC_TPREL16_HI", /* name */
965 1.1 christos FALSE, /* partial_inplace */
966 1.1 christos 0, /* src_mask */
967 1.1 christos 0xffff, /* dst_mask */
968 1.1 christos FALSE), /* pcrel_offset */
969 1.1 christos
970 1.1 christos /* Like TPREL16_HI, but adjust for low 16 bits. */
971 1.1 christos HOWTO (R_PPC_TPREL16_HA,
972 1.1 christos 16, /* rightshift */
973 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
974 1.1 christos 16, /* bitsize */
975 1.1 christos FALSE, /* pc_relative */
976 1.1 christos 0, /* bitpos */
977 1.1 christos complain_overflow_dont, /* complain_on_overflow */
978 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
979 1.1 christos "R_PPC_TPREL16_HA", /* name */
980 1.1 christos FALSE, /* partial_inplace */
981 1.1 christos 0, /* src_mask */
982 1.1 christos 0xffff, /* dst_mask */
983 1.1 christos FALSE), /* pcrel_offset */
984 1.1 christos
985 1.1 christos /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
986 1.1 christos with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
987 1.1 christos to the first entry. */
988 1.1 christos HOWTO (R_PPC_GOT_TLSGD16,
989 1.1 christos 0, /* rightshift */
990 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
991 1.1 christos 16, /* bitsize */
992 1.1 christos FALSE, /* pc_relative */
993 1.1 christos 0, /* bitpos */
994 1.1 christos complain_overflow_signed, /* complain_on_overflow */
995 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
996 1.1 christos "R_PPC_GOT_TLSGD16", /* name */
997 1.1 christos FALSE, /* partial_inplace */
998 1.1 christos 0, /* src_mask */
999 1.1 christos 0xffff, /* dst_mask */
1000 1.1 christos FALSE), /* pcrel_offset */
1001 1.1 christos
1002 1.1 christos /* Like GOT_TLSGD16, but no overflow. */
1003 1.1 christos HOWTO (R_PPC_GOT_TLSGD16_LO,
1004 1.1 christos 0, /* rightshift */
1005 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1006 1.1 christos 16, /* bitsize */
1007 1.1 christos FALSE, /* pc_relative */
1008 1.1 christos 0, /* bitpos */
1009 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1010 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1011 1.1 christos "R_PPC_GOT_TLSGD16_LO", /* name */
1012 1.1 christos FALSE, /* partial_inplace */
1013 1.1 christos 0, /* src_mask */
1014 1.1 christos 0xffff, /* dst_mask */
1015 1.1 christos FALSE), /* pcrel_offset */
1016 1.1 christos
1017 1.1 christos /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1018 1.1 christos HOWTO (R_PPC_GOT_TLSGD16_HI,
1019 1.1 christos 16, /* rightshift */
1020 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1021 1.1 christos 16, /* bitsize */
1022 1.1 christos FALSE, /* pc_relative */
1023 1.1 christos 0, /* bitpos */
1024 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1025 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1026 1.1 christos "R_PPC_GOT_TLSGD16_HI", /* name */
1027 1.1 christos FALSE, /* partial_inplace */
1028 1.1 christos 0, /* src_mask */
1029 1.1 christos 0xffff, /* dst_mask */
1030 1.1 christos FALSE), /* pcrel_offset */
1031 1.1 christos
1032 1.1 christos /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1033 1.1 christos HOWTO (R_PPC_GOT_TLSGD16_HA,
1034 1.1 christos 16, /* rightshift */
1035 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1036 1.1 christos 16, /* bitsize */
1037 1.1 christos FALSE, /* pc_relative */
1038 1.1 christos 0, /* bitpos */
1039 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1040 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1041 1.1 christos "R_PPC_GOT_TLSGD16_HA", /* name */
1042 1.1 christos FALSE, /* partial_inplace */
1043 1.1 christos 0, /* src_mask */
1044 1.1 christos 0xffff, /* dst_mask */
1045 1.1 christos FALSE), /* pcrel_offset */
1046 1.1 christos
1047 1.1 christos /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1048 1.1 christos with values (sym+add)@dtpmod and zero, and computes the offset to the
1049 1.1 christos first entry. */
1050 1.1 christos HOWTO (R_PPC_GOT_TLSLD16,
1051 1.1 christos 0, /* rightshift */
1052 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1053 1.1 christos 16, /* bitsize */
1054 1.1 christos FALSE, /* pc_relative */
1055 1.1 christos 0, /* bitpos */
1056 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1057 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1058 1.1 christos "R_PPC_GOT_TLSLD16", /* name */
1059 1.1 christos FALSE, /* partial_inplace */
1060 1.1 christos 0, /* src_mask */
1061 1.1 christos 0xffff, /* dst_mask */
1062 1.1 christos FALSE), /* pcrel_offset */
1063 1.1 christos
1064 1.1 christos /* Like GOT_TLSLD16, but no overflow. */
1065 1.1 christos HOWTO (R_PPC_GOT_TLSLD16_LO,
1066 1.1 christos 0, /* rightshift */
1067 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1068 1.1 christos 16, /* bitsize */
1069 1.1 christos FALSE, /* pc_relative */
1070 1.1 christos 0, /* bitpos */
1071 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1072 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1073 1.1 christos "R_PPC_GOT_TLSLD16_LO", /* name */
1074 1.1 christos FALSE, /* partial_inplace */
1075 1.1 christos 0, /* src_mask */
1076 1.1 christos 0xffff, /* dst_mask */
1077 1.1 christos FALSE), /* pcrel_offset */
1078 1.1 christos
1079 1.1 christos /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1080 1.1 christos HOWTO (R_PPC_GOT_TLSLD16_HI,
1081 1.1 christos 16, /* rightshift */
1082 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1083 1.1 christos 16, /* bitsize */
1084 1.1 christos FALSE, /* pc_relative */
1085 1.1 christos 0, /* bitpos */
1086 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1087 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1088 1.1 christos "R_PPC_GOT_TLSLD16_HI", /* name */
1089 1.1 christos FALSE, /* partial_inplace */
1090 1.1 christos 0, /* src_mask */
1091 1.1 christos 0xffff, /* dst_mask */
1092 1.1 christos FALSE), /* pcrel_offset */
1093 1.1 christos
1094 1.1 christos /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1095 1.1 christos HOWTO (R_PPC_GOT_TLSLD16_HA,
1096 1.1 christos 16, /* rightshift */
1097 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1098 1.1 christos 16, /* bitsize */
1099 1.1 christos FALSE, /* pc_relative */
1100 1.1 christos 0, /* bitpos */
1101 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1102 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1103 1.1 christos "R_PPC_GOT_TLSLD16_HA", /* name */
1104 1.1 christos FALSE, /* partial_inplace */
1105 1.1 christos 0, /* src_mask */
1106 1.1 christos 0xffff, /* dst_mask */
1107 1.1 christos FALSE), /* pcrel_offset */
1108 1.1 christos
1109 1.1 christos /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1110 1.1 christos the offset to the entry. */
1111 1.1 christos HOWTO (R_PPC_GOT_DTPREL16,
1112 1.1 christos 0, /* rightshift */
1113 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1114 1.1 christos 16, /* bitsize */
1115 1.1 christos FALSE, /* pc_relative */
1116 1.1 christos 0, /* bitpos */
1117 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1118 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1119 1.1 christos "R_PPC_GOT_DTPREL16", /* name */
1120 1.1 christos FALSE, /* partial_inplace */
1121 1.1 christos 0, /* src_mask */
1122 1.1 christos 0xffff, /* dst_mask */
1123 1.1 christos FALSE), /* pcrel_offset */
1124 1.1 christos
1125 1.1 christos /* Like GOT_DTPREL16, but no overflow. */
1126 1.1 christos HOWTO (R_PPC_GOT_DTPREL16_LO,
1127 1.1 christos 0, /* rightshift */
1128 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1129 1.1 christos 16, /* bitsize */
1130 1.1 christos FALSE, /* pc_relative */
1131 1.1 christos 0, /* bitpos */
1132 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1133 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1134 1.1 christos "R_PPC_GOT_DTPREL16_LO", /* name */
1135 1.1 christos FALSE, /* partial_inplace */
1136 1.1 christos 0, /* src_mask */
1137 1.1 christos 0xffff, /* dst_mask */
1138 1.1 christos FALSE), /* pcrel_offset */
1139 1.1 christos
1140 1.1 christos /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1141 1.1 christos HOWTO (R_PPC_GOT_DTPREL16_HI,
1142 1.1 christos 16, /* rightshift */
1143 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1144 1.1 christos 16, /* bitsize */
1145 1.1 christos FALSE, /* pc_relative */
1146 1.1 christos 0, /* bitpos */
1147 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1148 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1149 1.1 christos "R_PPC_GOT_DTPREL16_HI", /* name */
1150 1.1 christos FALSE, /* partial_inplace */
1151 1.1 christos 0, /* src_mask */
1152 1.1 christos 0xffff, /* dst_mask */
1153 1.1 christos FALSE), /* pcrel_offset */
1154 1.1 christos
1155 1.1 christos /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1156 1.1 christos HOWTO (R_PPC_GOT_DTPREL16_HA,
1157 1.1 christos 16, /* rightshift */
1158 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1159 1.1 christos 16, /* bitsize */
1160 1.1 christos FALSE, /* pc_relative */
1161 1.1 christos 0, /* bitpos */
1162 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1163 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1164 1.1 christos "R_PPC_GOT_DTPREL16_HA", /* name */
1165 1.1 christos FALSE, /* partial_inplace */
1166 1.1 christos 0, /* src_mask */
1167 1.1 christos 0xffff, /* dst_mask */
1168 1.1 christos FALSE), /* pcrel_offset */
1169 1.1 christos
1170 1.1 christos /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1171 1.1 christos offset to the entry. */
1172 1.1 christos HOWTO (R_PPC_GOT_TPREL16,
1173 1.1 christos 0, /* rightshift */
1174 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1175 1.1 christos 16, /* bitsize */
1176 1.1 christos FALSE, /* pc_relative */
1177 1.1 christos 0, /* bitpos */
1178 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1179 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1180 1.1 christos "R_PPC_GOT_TPREL16", /* name */
1181 1.1 christos FALSE, /* partial_inplace */
1182 1.1 christos 0, /* src_mask */
1183 1.1 christos 0xffff, /* dst_mask */
1184 1.1 christos FALSE), /* pcrel_offset */
1185 1.1 christos
1186 1.1 christos /* Like GOT_TPREL16, but no overflow. */
1187 1.1 christos HOWTO (R_PPC_GOT_TPREL16_LO,
1188 1.1 christos 0, /* rightshift */
1189 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1190 1.1 christos 16, /* bitsize */
1191 1.1 christos FALSE, /* pc_relative */
1192 1.1 christos 0, /* bitpos */
1193 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1194 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1195 1.1 christos "R_PPC_GOT_TPREL16_LO", /* name */
1196 1.1 christos FALSE, /* partial_inplace */
1197 1.1 christos 0, /* src_mask */
1198 1.1 christos 0xffff, /* dst_mask */
1199 1.1 christos FALSE), /* pcrel_offset */
1200 1.1 christos
1201 1.1 christos /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1202 1.1 christos HOWTO (R_PPC_GOT_TPREL16_HI,
1203 1.1 christos 16, /* rightshift */
1204 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1205 1.1 christos 16, /* bitsize */
1206 1.1 christos FALSE, /* pc_relative */
1207 1.1 christos 0, /* bitpos */
1208 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1209 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1210 1.1 christos "R_PPC_GOT_TPREL16_HI", /* name */
1211 1.1 christos FALSE, /* partial_inplace */
1212 1.1 christos 0, /* src_mask */
1213 1.1 christos 0xffff, /* dst_mask */
1214 1.1 christos FALSE), /* pcrel_offset */
1215 1.1 christos
1216 1.1 christos /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1217 1.1 christos HOWTO (R_PPC_GOT_TPREL16_HA,
1218 1.1 christos 16, /* rightshift */
1219 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1220 1.1 christos 16, /* bitsize */
1221 1.1 christos FALSE, /* pc_relative */
1222 1.1 christos 0, /* bitpos */
1223 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1224 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1225 1.1 christos "R_PPC_GOT_TPREL16_HA", /* name */
1226 1.1 christos FALSE, /* partial_inplace */
1227 1.1 christos 0, /* src_mask */
1228 1.1 christos 0xffff, /* dst_mask */
1229 1.1 christos FALSE), /* pcrel_offset */
1230 1.1 christos
1231 1.1 christos /* The remaining relocs are from the Embedded ELF ABI, and are not
1232 1.1 christos in the SVR4 ELF ABI. */
1233 1.1 christos
1234 1.1 christos /* 32 bit value resulting from the addend minus the symbol. */
1235 1.1 christos HOWTO (R_PPC_EMB_NADDR32, /* type */
1236 1.1 christos 0, /* rightshift */
1237 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1238 1.1 christos 32, /* bitsize */
1239 1.1 christos FALSE, /* pc_relative */
1240 1.3 christos 0, /* bitpos */
1241 1.6 christos complain_overflow_dont, /* complain_on_overflow */
1242 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1243 1.1 christos "R_PPC_EMB_NADDR32", /* name */
1244 1.1 christos FALSE, /* partial_inplace */
1245 1.1 christos 0, /* src_mask */
1246 1.1 christos 0xffffffff, /* dst_mask */
1247 1.1 christos FALSE), /* pcrel_offset */
1248 1.1 christos
1249 1.1 christos /* 16 bit value resulting from the addend minus the symbol. */
1250 1.1 christos HOWTO (R_PPC_EMB_NADDR16, /* type */
1251 1.1 christos 0, /* rightshift */
1252 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1253 1.1 christos 16, /* bitsize */
1254 1.1 christos FALSE, /* pc_relative */
1255 1.3 christos 0, /* bitpos */
1256 1.6 christos complain_overflow_signed, /* complain_on_overflow */
1257 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1258 1.1 christos "R_PPC_EMB_NADDR16", /* name */
1259 1.1 christos FALSE, /* partial_inplace */
1260 1.1 christos 0, /* src_mask */
1261 1.1 christos 0xffff, /* dst_mask */
1262 1.1 christos FALSE), /* pcrel_offset */
1263 1.1 christos
1264 1.1 christos /* 16 bit value resulting from the addend minus the symbol. */
1265 1.1 christos HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1266 1.1 christos 0, /* rightshift */
1267 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1268 1.1 christos 16, /* bitsize */
1269 1.1 christos FALSE, /* pc_relative */
1270 1.1 christos 0, /* bitpos */
1271 1.6 christos complain_overflow_dont,/* complain_on_overflow */
1272 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1273 1.1 christos "R_PPC_EMB_ADDR16_LO", /* name */
1274 1.1 christos FALSE, /* partial_inplace */
1275 1.1 christos 0, /* src_mask */
1276 1.1 christos 0xffff, /* dst_mask */
1277 1.1 christos FALSE), /* pcrel_offset */
1278 1.1 christos
1279 1.1 christos /* The high order 16 bits of the addend minus the symbol. */
1280 1.1 christos HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1281 1.1 christos 16, /* rightshift */
1282 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1283 1.1 christos 16, /* bitsize */
1284 1.1 christos FALSE, /* pc_relative */
1285 1.1 christos 0, /* bitpos */
1286 1.6 christos complain_overflow_dont, /* complain_on_overflow */
1287 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1288 1.1 christos "R_PPC_EMB_NADDR16_HI", /* name */
1289 1.1 christos FALSE, /* partial_inplace */
1290 1.1 christos 0, /* src_mask */
1291 1.1 christos 0xffff, /* dst_mask */
1292 1.1 christos FALSE), /* pcrel_offset */
1293 1.1 christos
1294 1.1 christos /* The high order 16 bits of the result of the addend minus the address,
1295 1.1 christos plus 1 if the contents of the low 16 bits, treated as a signed number,
1296 1.1 christos is negative. */
1297 1.1 christos HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1298 1.1 christos 16, /* rightshift */
1299 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1300 1.1 christos 16, /* bitsize */
1301 1.1 christos FALSE, /* pc_relative */
1302 1.1 christos 0, /* bitpos */
1303 1.6 christos complain_overflow_dont, /* complain_on_overflow */
1304 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1305 1.1 christos "R_PPC_EMB_NADDR16_HA", /* name */
1306 1.1 christos FALSE, /* partial_inplace */
1307 1.1 christos 0, /* src_mask */
1308 1.1 christos 0xffff, /* dst_mask */
1309 1.1 christos FALSE), /* pcrel_offset */
1310 1.1 christos
1311 1.1 christos /* 16 bit value resulting from allocating a 4 byte word to hold an
1312 1.1 christos address in the .sdata section, and returning the offset from
1313 1.1 christos _SDA_BASE_ for that relocation. */
1314 1.1 christos HOWTO (R_PPC_EMB_SDAI16, /* type */
1315 1.1 christos 0, /* rightshift */
1316 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1317 1.1 christos 16, /* bitsize */
1318 1.1 christos FALSE, /* pc_relative */
1319 1.1 christos 0, /* bitpos */
1320 1.6 christos complain_overflow_signed, /* complain_on_overflow */
1321 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1322 1.1 christos "R_PPC_EMB_SDAI16", /* name */
1323 1.1 christos FALSE, /* partial_inplace */
1324 1.1 christos 0, /* src_mask */
1325 1.1 christos 0xffff, /* dst_mask */
1326 1.1 christos FALSE), /* pcrel_offset */
1327 1.1 christos
1328 1.1 christos /* 16 bit value resulting from allocating a 4 byte word to hold an
1329 1.1 christos address in the .sdata2 section, and returning the offset from
1330 1.1 christos _SDA2_BASE_ for that relocation. */
1331 1.1 christos HOWTO (R_PPC_EMB_SDA2I16, /* type */
1332 1.1 christos 0, /* rightshift */
1333 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1334 1.1 christos 16, /* bitsize */
1335 1.1 christos FALSE, /* pc_relative */
1336 1.1 christos 0, /* bitpos */
1337 1.6 christos complain_overflow_signed, /* complain_on_overflow */
1338 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1339 1.1 christos "R_PPC_EMB_SDA2I16", /* name */
1340 1.1 christos FALSE, /* partial_inplace */
1341 1.1 christos 0, /* src_mask */
1342 1.1 christos 0xffff, /* dst_mask */
1343 1.1 christos FALSE), /* pcrel_offset */
1344 1.1 christos
1345 1.1 christos /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1346 1.1 christos small data items. */
1347 1.1 christos HOWTO (R_PPC_EMB_SDA2REL, /* type */
1348 1.1 christos 0, /* rightshift */
1349 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1350 1.1 christos 16, /* bitsize */
1351 1.1 christos FALSE, /* pc_relative */
1352 1.1 christos 0, /* bitpos */
1353 1.6 christos complain_overflow_signed, /* complain_on_overflow */
1354 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1355 1.1 christos "R_PPC_EMB_SDA2REL", /* name */
1356 1.1 christos FALSE, /* partial_inplace */
1357 1.1 christos 0, /* src_mask */
1358 1.1 christos 0xffff, /* dst_mask */
1359 1.1 christos FALSE), /* pcrel_offset */
1360 1.1 christos
1361 1.1 christos /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1362 1.1 christos signed offset from the appropriate base, and filling in the register
1363 1.1 christos field with the appropriate register (0, 2, or 13). */
1364 1.1 christos HOWTO (R_PPC_EMB_SDA21, /* type */
1365 1.1 christos 0, /* rightshift */
1366 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1367 1.1 christos 16, /* bitsize */
1368 1.1 christos FALSE, /* pc_relative */
1369 1.1 christos 0, /* bitpos */
1370 1.6 christos complain_overflow_signed, /* complain_on_overflow */
1371 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1372 1.1 christos "R_PPC_EMB_SDA21", /* name */
1373 1.1 christos FALSE, /* partial_inplace */
1374 1.1 christos 0, /* src_mask */
1375 1.1 christos 0xffff, /* dst_mask */
1376 1.1 christos FALSE), /* pcrel_offset */
1377 1.1 christos
1378 1.1 christos /* Relocation not handled: R_PPC_EMB_MRKREF */
1379 1.1 christos /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1380 1.1 christos /* Relocation not handled: R_PPC_EMB_RELST_LO */
1381 1.1 christos /* Relocation not handled: R_PPC_EMB_RELST_HI */
1382 1.1 christos /* Relocation not handled: R_PPC_EMB_RELST_HA */
1383 1.1 christos /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1384 1.1 christos
1385 1.1 christos /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1386 1.1 christos in the 16 bit signed offset from the appropriate base, and filling in the
1387 1.1 christos register field with the appropriate register (0, 2, or 13). */
1388 1.1 christos HOWTO (R_PPC_EMB_RELSDA, /* type */
1389 1.1 christos 0, /* rightshift */
1390 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1391 1.1 christos 16, /* bitsize */
1392 1.1 christos FALSE, /* pc_relative */
1393 1.1 christos 0, /* bitpos */
1394 1.6 christos complain_overflow_signed, /* complain_on_overflow */
1395 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1396 1.1 christos "R_PPC_EMB_RELSDA", /* name */
1397 1.1 christos FALSE, /* partial_inplace */
1398 1.1 christos 0, /* src_mask */
1399 1.1 christos 0xffff, /* dst_mask */
1400 1.1 christos FALSE), /* pcrel_offset */
1401 1.1 christos
1402 1.1 christos /* A relative 8 bit branch. */
1403 1.1 christos HOWTO (R_PPC_VLE_REL8, /* type */
1404 1.1 christos 1, /* rightshift */
1405 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1406 1.1 christos 8, /* bitsize */
1407 1.1 christos TRUE, /* pc_relative */
1408 1.1 christos 0, /* bitpos */
1409 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1410 1.1 christos bfd_elf_generic_reloc, /* special_function */
1411 1.1 christos "R_PPC_VLE_REL8", /* name */
1412 1.1 christos FALSE, /* partial_inplace */
1413 1.1 christos 0, /* src_mask */
1414 1.1 christos 0xff, /* dst_mask */
1415 1.1 christos TRUE), /* pcrel_offset */
1416 1.1 christos
1417 1.1 christos /* A relative 15 bit branch. */
1418 1.1 christos HOWTO (R_PPC_VLE_REL15, /* type */
1419 1.1 christos 1, /* rightshift */
1420 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1421 1.1 christos 15, /* bitsize */
1422 1.1 christos TRUE, /* pc_relative */
1423 1.1 christos 1, /* bitpos */
1424 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1425 1.1 christos bfd_elf_generic_reloc, /* special_function */
1426 1.1 christos "R_PPC_VLE_REL15", /* name */
1427 1.1 christos FALSE, /* partial_inplace */
1428 1.1 christos 0, /* src_mask */
1429 1.1 christos 0xfe, /* dst_mask */
1430 1.1 christos TRUE), /* pcrel_offset */
1431 1.1 christos
1432 1.1 christos /* A relative 24 bit branch. */
1433 1.1 christos HOWTO (R_PPC_VLE_REL24, /* type */
1434 1.1 christos 1, /* rightshift */
1435 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1436 1.1 christos 24, /* bitsize */
1437 1.1 christos TRUE, /* pc_relative */
1438 1.1 christos 1, /* bitpos */
1439 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1440 1.1 christos bfd_elf_generic_reloc, /* special_function */
1441 1.1 christos "R_PPC_VLE_REL24", /* name */
1442 1.1 christos FALSE, /* partial_inplace */
1443 1.1 christos 0, /* src_mask */
1444 1.1 christos 0x1fffffe, /* dst_mask */
1445 1.1 christos TRUE), /* pcrel_offset */
1446 1.1 christos
1447 1.1 christos /* The 16 LSBS in split16a format. */
1448 1.1 christos HOWTO (R_PPC_VLE_LO16A, /* type */
1449 1.1 christos 0, /* rightshift */
1450 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1451 1.1 christos 16, /* bitsize */
1452 1.1 christos FALSE, /* pc_relative */
1453 1.3 christos 0, /* bitpos */
1454 1.6 christos complain_overflow_dont, /* complain_on_overflow */
1455 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1456 1.1 christos "R_PPC_VLE_LO16A", /* name */
1457 1.1 christos FALSE, /* partial_inplace */
1458 1.1 christos 0, /* src_mask */
1459 1.1 christos 0x1f007ff, /* dst_mask */
1460 1.1 christos FALSE), /* pcrel_offset */
1461 1.1 christos
1462 1.1 christos /* The 16 LSBS in split16d format. */
1463 1.1 christos HOWTO (R_PPC_VLE_LO16D, /* type */
1464 1.1 christos 0, /* rightshift */
1465 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1466 1.1 christos 16, /* bitsize */
1467 1.1 christos FALSE, /* pc_relative */
1468 1.3 christos 0, /* bitpos */
1469 1.6 christos complain_overflow_dont, /* complain_on_overflow */
1470 1.6 christos ppc_elf_unhandled_reloc, /* special_function */
1471 1.1 christos "R_PPC_VLE_LO16D", /* name */
1472 1.1 christos FALSE, /* partial_inplace */
1473 1.1 christos 0, /* src_mask */
1474 1.1 christos 0x1f07ff, /* dst_mask */
1475 1.1 christos FALSE), /* pcrel_offset */
1476 1.1 christos
1477 1.1 christos /* Bits 16-31 split16a format. */
1478 1.3 christos HOWTO (R_PPC_VLE_HI16A, /* type */
1479 1.1 christos 16, /* rightshift */
1480 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1481 1.1 christos 16, /* bitsize */
1482 1.1 christos FALSE, /* pc_relative */
1483 1.3 christos 0, /* bitpos */
1484 1.6 christos complain_overflow_dont, /* complain_on_overflow */
1485 1.6 christos ppc_elf_unhandled_reloc, /* special_function */
1486 1.1 christos "R_PPC_VLE_HI16A", /* name */
1487 1.1 christos FALSE, /* partial_inplace */
1488 1.1 christos 0, /* src_mask */
1489 1.1 christos 0x1f007ff, /* dst_mask */
1490 1.1 christos FALSE), /* pcrel_offset */
1491 1.1 christos
1492 1.1 christos /* Bits 16-31 split16d format. */
1493 1.3 christos HOWTO (R_PPC_VLE_HI16D, /* type */
1494 1.1 christos 16, /* rightshift */
1495 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1496 1.1 christos 16, /* bitsize */
1497 1.1 christos FALSE, /* pc_relative */
1498 1.3 christos 0, /* bitpos */
1499 1.6 christos complain_overflow_dont, /* complain_on_overflow */
1500 1.6 christos ppc_elf_unhandled_reloc, /* special_function */
1501 1.1 christos "R_PPC_VLE_HI16D", /* name */
1502 1.1 christos FALSE, /* partial_inplace */
1503 1.1 christos 0, /* src_mask */
1504 1.1 christos 0x1f07ff, /* dst_mask */
1505 1.1 christos FALSE), /* pcrel_offset */
1506 1.1 christos
1507 1.1 christos /* Bits 16-31 (High Adjusted) in split16a format. */
1508 1.3 christos HOWTO (R_PPC_VLE_HA16A, /* type */
1509 1.1 christos 16, /* rightshift */
1510 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1511 1.1 christos 16, /* bitsize */
1512 1.1 christos FALSE, /* pc_relative */
1513 1.3 christos 0, /* bitpos */
1514 1.6 christos complain_overflow_dont, /* complain_on_overflow */
1515 1.6 christos ppc_elf_unhandled_reloc, /* special_function */
1516 1.1 christos "R_PPC_VLE_HA16A", /* name */
1517 1.1 christos FALSE, /* partial_inplace */
1518 1.1 christos 0, /* src_mask */
1519 1.1 christos 0x1f007ff, /* dst_mask */
1520 1.1 christos FALSE), /* pcrel_offset */
1521 1.1 christos
1522 1.1 christos /* Bits 16-31 (High Adjusted) in split16d format. */
1523 1.3 christos HOWTO (R_PPC_VLE_HA16D, /* type */
1524 1.1 christos 16, /* rightshift */
1525 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1526 1.1 christos 16, /* bitsize */
1527 1.1 christos FALSE, /* pc_relative */
1528 1.3 christos 0, /* bitpos */
1529 1.6 christos complain_overflow_dont, /* complain_on_overflow */
1530 1.6 christos ppc_elf_unhandled_reloc, /* special_function */
1531 1.1 christos "R_PPC_VLE_HA16D", /* name */
1532 1.1 christos FALSE, /* partial_inplace */
1533 1.1 christos 0, /* src_mask */
1534 1.1 christos 0x1f07ff, /* dst_mask */
1535 1.1 christos FALSE), /* pcrel_offset */
1536 1.3 christos
1537 1.3 christos /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
1538 1.3 christos instructions. If the register base is 0 then the linker changes
1539 1.3 christos the e_add16i to an e_li instruction. */
1540 1.1 christos HOWTO (R_PPC_VLE_SDA21, /* type */
1541 1.1 christos 0, /* rightshift */
1542 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1543 1.1 christos 16, /* bitsize */
1544 1.1 christos FALSE, /* pc_relative */
1545 1.3 christos 0, /* bitpos */
1546 1.6 christos complain_overflow_signed, /* complain_on_overflow */
1547 1.6 christos ppc_elf_unhandled_reloc, /* special_function */
1548 1.1 christos "R_PPC_VLE_SDA21", /* name */
1549 1.1 christos FALSE, /* partial_inplace */
1550 1.1 christos 0, /* src_mask */
1551 1.1 christos 0xffff, /* dst_mask */
1552 1.1 christos FALSE), /* pcrel_offset */
1553 1.3 christos
1554 1.1 christos /* Like R_PPC_VLE_SDA21 but ignore overflow. */
1555 1.1 christos HOWTO (R_PPC_VLE_SDA21_LO, /* type */
1556 1.1 christos 0, /* rightshift */
1557 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1558 1.1 christos 16, /* bitsize */
1559 1.1 christos FALSE, /* pc_relative */
1560 1.3 christos 0, /* bitpos */
1561 1.6 christos complain_overflow_dont, /* complain_on_overflow */
1562 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1563 1.1 christos "R_PPC_VLE_SDA21_LO", /* name */
1564 1.1 christos FALSE, /* partial_inplace */
1565 1.3 christos 0, /* src_mask */
1566 1.1 christos 0xffff, /* dst_mask */
1567 1.1 christos FALSE), /* pcrel_offset */
1568 1.1 christos
1569 1.1 christos /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1570 1.1 christos HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */
1571 1.1 christos 0, /* rightshift */
1572 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1573 1.1 christos 16, /* bitsize */
1574 1.1 christos FALSE, /* pc_relative */
1575 1.6 christos 0, /* bitpos */
1576 1.6 christos complain_overflow_dont, /* complain_on_overflow */
1577 1.6 christos ppc_elf_unhandled_reloc, /* special_function */
1578 1.1 christos "R_PPC_VLE_SDAREL_LO16A", /* name */
1579 1.1 christos FALSE, /* partial_inplace */
1580 1.1 christos 0, /* src_mask */
1581 1.1 christos 0x1f007ff, /* dst_mask */
1582 1.1 christos FALSE), /* pcrel_offset */
1583 1.1 christos
1584 1.1 christos /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
1585 1.1 christos HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */
1586 1.1 christos 0, /* rightshift */
1587 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1588 1.1 christos 16, /* bitsize */
1589 1.1 christos FALSE, /* pc_relative */
1590 1.6 christos 0, /* bitpos */
1591 1.6 christos complain_overflow_dont, /* complain_on_overflow */
1592 1.6 christos ppc_elf_unhandled_reloc, /* special_function */
1593 1.1 christos "R_PPC_VLE_SDAREL_LO16D", /* name */
1594 1.1 christos FALSE, /* partial_inplace */
1595 1.1 christos 0, /* src_mask */
1596 1.1 christos 0x1f07ff, /* dst_mask */
1597 1.1 christos FALSE), /* pcrel_offset */
1598 1.1 christos
1599 1.6 christos /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1600 1.3 christos HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */
1601 1.1 christos 16, /* rightshift */
1602 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1603 1.1 christos 16, /* bitsize */
1604 1.1 christos FALSE, /* pc_relative */
1605 1.6 christos 0, /* bitpos */
1606 1.6 christos complain_overflow_dont, /* complain_on_overflow */
1607 1.6 christos ppc_elf_unhandled_reloc, /* special_function */
1608 1.1 christos "R_PPC_VLE_SDAREL_HI16A", /* name */
1609 1.1 christos FALSE, /* partial_inplace */
1610 1.1 christos 0, /* src_mask */
1611 1.1 christos 0x1f007ff, /* dst_mask */
1612 1.1 christos FALSE), /* pcrel_offset */
1613 1.1 christos
1614 1.6 christos /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1615 1.3 christos HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */
1616 1.1 christos 16, /* rightshift */
1617 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1618 1.1 christos 16, /* bitsize */
1619 1.1 christos FALSE, /* pc_relative */
1620 1.6 christos 0, /* bitpos */
1621 1.6 christos complain_overflow_dont, /* complain_on_overflow */
1622 1.6 christos ppc_elf_unhandled_reloc, /* special_function */
1623 1.1 christos "R_PPC_VLE_SDAREL_HI16D", /* name */
1624 1.1 christos FALSE, /* partial_inplace */
1625 1.1 christos 0, /* src_mask */
1626 1.1 christos 0x1f07ff, /* dst_mask */
1627 1.1 christos FALSE), /* pcrel_offset */
1628 1.1 christos
1629 1.6 christos /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1630 1.3 christos HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */
1631 1.1 christos 16, /* rightshift */
1632 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1633 1.1 christos 16, /* bitsize */
1634 1.1 christos FALSE, /* pc_relative */
1635 1.6 christos 0, /* bitpos */
1636 1.6 christos complain_overflow_dont, /* complain_on_overflow */
1637 1.6 christos ppc_elf_unhandled_reloc, /* special_function */
1638 1.1 christos "R_PPC_VLE_SDAREL_HA16A", /* name */
1639 1.1 christos FALSE, /* partial_inplace */
1640 1.1 christos 0, /* src_mask */
1641 1.1 christos 0x1f007ff, /* dst_mask */
1642 1.1 christos FALSE), /* pcrel_offset */
1643 1.1 christos
1644 1.6 christos /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1645 1.3 christos HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */
1646 1.1 christos 16, /* rightshift */
1647 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1648 1.1 christos 16, /* bitsize */
1649 1.1 christos FALSE, /* pc_relative */
1650 1.6 christos 0, /* bitpos */
1651 1.6 christos complain_overflow_dont, /* complain_on_overflow */
1652 1.6 christos ppc_elf_unhandled_reloc, /* special_function */
1653 1.1 christos "R_PPC_VLE_SDAREL_HA16D", /* name */
1654 1.1 christos FALSE, /* partial_inplace */
1655 1.1 christos 0, /* src_mask */
1656 1.1 christos 0x1f07ff, /* dst_mask */
1657 1.1 christos FALSE), /* pcrel_offset */
1658 1.1 christos
1659 1.1 christos HOWTO (R_PPC_IRELATIVE, /* type */
1660 1.1 christos 0, /* rightshift */
1661 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1662 1.1 christos 32, /* bitsize */
1663 1.1 christos FALSE, /* pc_relative */
1664 1.3 christos 0, /* bitpos */
1665 1.6 christos complain_overflow_dont, /* complain_on_overflow */
1666 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1667 1.1 christos "R_PPC_IRELATIVE", /* name */
1668 1.1 christos FALSE, /* partial_inplace */
1669 1.1 christos 0, /* src_mask */
1670 1.1 christos 0xffffffff, /* dst_mask */
1671 1.1 christos FALSE), /* pcrel_offset */
1672 1.1 christos
1673 1.1 christos /* A 16 bit relative relocation. */
1674 1.1 christos HOWTO (R_PPC_REL16, /* type */
1675 1.1 christos 0, /* rightshift */
1676 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1677 1.1 christos 16, /* bitsize */
1678 1.1 christos TRUE, /* pc_relative */
1679 1.3 christos 0, /* bitpos */
1680 1.1 christos complain_overflow_signed, /* complain_on_overflow */
1681 1.1 christos bfd_elf_generic_reloc, /* special_function */
1682 1.1 christos "R_PPC_REL16", /* name */
1683 1.1 christos FALSE, /* partial_inplace */
1684 1.1 christos 0, /* src_mask */
1685 1.1 christos 0xffff, /* dst_mask */
1686 1.1 christos TRUE), /* pcrel_offset */
1687 1.1 christos
1688 1.1 christos /* A 16 bit relative relocation without overflow. */
1689 1.1 christos HOWTO (R_PPC_REL16_LO, /* type */
1690 1.1 christos 0, /* rightshift */
1691 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1692 1.1 christos 16, /* bitsize */
1693 1.1 christos TRUE, /* pc_relative */
1694 1.1 christos 0, /* bitpos */
1695 1.1 christos complain_overflow_dont,/* complain_on_overflow */
1696 1.1 christos bfd_elf_generic_reloc, /* special_function */
1697 1.1 christos "R_PPC_REL16_LO", /* name */
1698 1.1 christos FALSE, /* partial_inplace */
1699 1.1 christos 0, /* src_mask */
1700 1.1 christos 0xffff, /* dst_mask */
1701 1.1 christos TRUE), /* pcrel_offset */
1702 1.1 christos
1703 1.1 christos /* The high order 16 bits of a relative address. */
1704 1.1 christos HOWTO (R_PPC_REL16_HI, /* type */
1705 1.1 christos 16, /* rightshift */
1706 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1707 1.1 christos 16, /* bitsize */
1708 1.1 christos TRUE, /* pc_relative */
1709 1.1 christos 0, /* bitpos */
1710 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1711 1.1 christos bfd_elf_generic_reloc, /* special_function */
1712 1.1 christos "R_PPC_REL16_HI", /* name */
1713 1.1 christos FALSE, /* partial_inplace */
1714 1.1 christos 0, /* src_mask */
1715 1.1 christos 0xffff, /* dst_mask */
1716 1.1 christos TRUE), /* pcrel_offset */
1717 1.1 christos
1718 1.1 christos /* The high order 16 bits of a relative address, plus 1 if the contents of
1719 1.1 christos the low 16 bits, treated as a signed number, is negative. */
1720 1.1 christos HOWTO (R_PPC_REL16_HA, /* type */
1721 1.1 christos 16, /* rightshift */
1722 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1723 1.1 christos 16, /* bitsize */
1724 1.1 christos TRUE, /* pc_relative */
1725 1.1 christos 0, /* bitpos */
1726 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1727 1.1 christos ppc_elf_addr16_ha_reloc, /* special_function */
1728 1.1 christos "R_PPC_REL16_HA", /* name */
1729 1.1 christos FALSE, /* partial_inplace */
1730 1.1 christos 0, /* src_mask */
1731 1.1 christos 0xffff, /* dst_mask */
1732 1.1 christos TRUE), /* pcrel_offset */
1733 1.6 christos
1734 1.6 christos /* Like R_PPC_REL16_HA but for split field in addpcis. */
1735 1.6 christos HOWTO (R_PPC_REL16DX_HA, /* type */
1736 1.6 christos 16, /* rightshift */
1737 1.6 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
1738 1.6 christos 16, /* bitsize */
1739 1.6 christos TRUE, /* pc_relative */
1740 1.6 christos 0, /* bitpos */
1741 1.6 christos complain_overflow_signed, /* complain_on_overflow */
1742 1.6 christos ppc_elf_addr16_ha_reloc, /* special_function */
1743 1.6 christos "R_PPC_REL16DX_HA", /* name */
1744 1.6 christos FALSE, /* partial_inplace */
1745 1.6 christos 0, /* src_mask */
1746 1.6 christos 0x1fffc1, /* dst_mask */
1747 1.6 christos TRUE), /* pcrel_offset */
1748 1.1 christos
1749 1.1 christos /* GNU extension to record C++ vtable hierarchy. */
1750 1.1 christos HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1751 1.1 christos 0, /* rightshift */
1752 1.1 christos 0, /* size (0 = byte, 1 = short, 2 = long) */
1753 1.1 christos 0, /* bitsize */
1754 1.1 christos FALSE, /* pc_relative */
1755 1.1 christos 0, /* bitpos */
1756 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1757 1.1 christos NULL, /* special_function */
1758 1.1 christos "R_PPC_GNU_VTINHERIT", /* name */
1759 1.1 christos FALSE, /* partial_inplace */
1760 1.1 christos 0, /* src_mask */
1761 1.1 christos 0, /* dst_mask */
1762 1.1 christos FALSE), /* pcrel_offset */
1763 1.1 christos
1764 1.1 christos /* GNU extension to record C++ vtable member usage. */
1765 1.1 christos HOWTO (R_PPC_GNU_VTENTRY, /* type */
1766 1.1 christos 0, /* rightshift */
1767 1.1 christos 0, /* size (0 = byte, 1 = short, 2 = long) */
1768 1.1 christos 0, /* bitsize */
1769 1.1 christos FALSE, /* pc_relative */
1770 1.1 christos 0, /* bitpos */
1771 1.1 christos complain_overflow_dont, /* complain_on_overflow */
1772 1.1 christos NULL, /* special_function */
1773 1.1 christos "R_PPC_GNU_VTENTRY", /* name */
1774 1.1 christos FALSE, /* partial_inplace */
1775 1.1 christos 0, /* src_mask */
1776 1.1 christos 0, /* dst_mask */
1777 1.1 christos FALSE), /* pcrel_offset */
1778 1.1 christos
1779 1.1 christos /* Phony reloc to handle AIX style TOC entries. */
1780 1.1 christos HOWTO (R_PPC_TOC16, /* type */
1781 1.1 christos 0, /* rightshift */
1782 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
1783 1.1 christos 16, /* bitsize */
1784 1.1 christos FALSE, /* pc_relative */
1785 1.1 christos 0, /* bitpos */
1786 1.6 christos complain_overflow_signed, /* complain_on_overflow */
1787 1.1 christos ppc_elf_unhandled_reloc, /* special_function */
1788 1.1 christos "R_PPC_TOC16", /* name */
1789 1.1 christos FALSE, /* partial_inplace */
1790 1.1 christos 0, /* src_mask */
1791 1.1 christos 0xffff, /* dst_mask */
1792 1.1 christos FALSE), /* pcrel_offset */
1793 1.1 christos };
1794 1.1 christos
1795 1.1 christos /* External 32-bit PPC structure for PRPSINFO. This structure is
1796 1.1 christos ABI-defined, thus we choose to use char arrays here in order to
1797 1.1 christos avoid dealing with different types in different architectures.
1798 1.1 christos
1799 1.1 christos The PPC 32-bit structure uses int for `pr_uid' and `pr_gid' while
1800 1.1 christos most non-PPC architectures use `short int'.
1801 1.1 christos
1802 1.1 christos This structure will ultimately be written in the corefile's note
1803 1.1 christos section, as the PRPSINFO. */
1804 1.1 christos
1805 1.1 christos struct elf_external_ppc_linux_prpsinfo32
1806 1.1 christos {
1807 1.1 christos char pr_state; /* Numeric process state. */
1808 1.1 christos char pr_sname; /* Char for pr_state. */
1809 1.1 christos char pr_zomb; /* Zombie. */
1810 1.1 christos char pr_nice; /* Nice val. */
1811 1.1 christos char pr_flag[4]; /* Flags. */
1812 1.1 christos char pr_uid[4];
1813 1.1 christos char pr_gid[4];
1814 1.1 christos char pr_pid[4];
1815 1.1 christos char pr_ppid[4];
1816 1.1 christos char pr_pgrp[4];
1817 1.1 christos char pr_sid[4];
1818 1.1 christos char pr_fname[16]; /* Filename of executable. */
1819 1.1 christos char pr_psargs[80]; /* Initial part of arg list. */
1820 1.1 christos };
1821 1.6 christos
1822 1.6 christos /* Helper function to copy an elf_internal_linux_prpsinfo in host
1823 1.1 christos endian to an elf_external_ppc_linux_prpsinfo32 in target endian. */
1824 1.6 christos
1825 1.6 christos static inline void
1826 1.6 christos swap_ppc_linux_prpsinfo32_out (bfd *obfd,
1827 1.6 christos const struct elf_internal_linux_prpsinfo *from,
1828 1.6 christos struct elf_external_ppc_linux_prpsinfo32 *to)
1829 1.6 christos {
1830 1.6 christos bfd_put_8 (obfd, from->pr_state, &to->pr_state);
1831 1.6 christos bfd_put_8 (obfd, from->pr_sname, &to->pr_sname);
1832 1.6 christos bfd_put_8 (obfd, from->pr_zomb, &to->pr_zomb);
1833 1.6 christos bfd_put_8 (obfd, from->pr_nice, &to->pr_nice);
1834 1.6 christos bfd_put_32 (obfd, from->pr_flag, to->pr_flag);
1835 1.6 christos bfd_put_32 (obfd, from->pr_uid, to->pr_uid);
1836 1.6 christos bfd_put_32 (obfd, from->pr_gid, to->pr_gid);
1837 1.6 christos bfd_put_32 (obfd, from->pr_pid, to->pr_pid);
1838 1.6 christos bfd_put_32 (obfd, from->pr_ppid, to->pr_ppid);
1839 1.6 christos bfd_put_32 (obfd, from->pr_pgrp, to->pr_pgrp);
1840 1.6 christos bfd_put_32 (obfd, from->pr_sid, to->pr_sid);
1841 1.6 christos strncpy (to->pr_fname, from->pr_fname, sizeof (to->pr_fname));
1842 1.6 christos strncpy (to->pr_psargs, from->pr_psargs, sizeof (to->pr_psargs));
1843 1.1 christos }
1844 1.1 christos
1845 1.1 christos /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1847 1.1 christos
1848 1.1 christos static void
1849 1.1 christos ppc_elf_howto_init (void)
1850 1.1 christos {
1851 1.1 christos unsigned int i, type;
1852 1.1 christos
1853 1.1 christos for (i = 0;
1854 1.1 christos i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1855 1.1 christos i++)
1856 1.1 christos {
1857 1.1 christos type = ppc_elf_howto_raw[i].type;
1858 1.1 christos if (type >= (sizeof (ppc_elf_howto_table)
1859 1.1 christos / sizeof (ppc_elf_howto_table[0])))
1860 1.1 christos abort ();
1861 1.1 christos ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1862 1.1 christos }
1863 1.1 christos }
1864 1.1 christos
1865 1.1 christos static reloc_howto_type *
1866 1.1 christos ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1867 1.1 christos bfd_reloc_code_real_type code)
1868 1.1 christos {
1869 1.1 christos enum elf_ppc_reloc_type r;
1870 1.1 christos
1871 1.1 christos /* Initialize howto table if not already done. */
1872 1.1 christos if (!ppc_elf_howto_table[R_PPC_ADDR32])
1873 1.1 christos ppc_elf_howto_init ();
1874 1.1 christos
1875 1.1 christos switch (code)
1876 1.1 christos {
1877 1.1 christos default:
1878 1.1 christos return NULL;
1879 1.1 christos
1880 1.1 christos case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1881 1.1 christos case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1882 1.1 christos case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1883 1.1 christos case BFD_RELOC_PPC64_ADDR16_DS:
1884 1.1 christos case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1885 1.1 christos case BFD_RELOC_PPC64_ADDR16_LO_DS:
1886 1.1 christos case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1887 1.1 christos case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1888 1.1 christos case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1889 1.1 christos case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1890 1.1 christos case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1891 1.1 christos case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1892 1.1 christos case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1893 1.1 christos case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1894 1.1 christos case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1895 1.1 christos case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1896 1.1 christos case BFD_RELOC_PPC64_GOT16_DS:
1897 1.1 christos case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1898 1.1 christos case BFD_RELOC_PPC64_GOT16_LO_DS:
1899 1.1 christos case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1900 1.1 christos case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1901 1.1 christos case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1902 1.1 christos case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1903 1.1 christos case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1904 1.1 christos case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1905 1.1 christos case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1906 1.1 christos case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1907 1.1 christos case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1908 1.1 christos case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1909 1.1 christos case BFD_RELOC_PPC64_PLT16_LO_DS:
1910 1.1 christos case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1911 1.1 christos case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1912 1.1 christos case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1913 1.1 christos case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1914 1.1 christos case BFD_RELOC_PPC64_SECTOFF_DS:
1915 1.1 christos case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1916 1.1 christos case BFD_RELOC_PPC64_SECTOFF_LO_DS:
1917 1.1 christos case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1918 1.1 christos case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1919 1.1 christos case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1920 1.1 christos case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1921 1.1 christos case BFD_RELOC_PPC64_TOC16_DS:
1922 1.1 christos case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1923 1.1 christos case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1924 1.1 christos case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1925 1.1 christos case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1926 1.1 christos case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1927 1.1 christos case BFD_RELOC_PPC64_TPREL16_DS:
1928 1.1 christos case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1929 1.1 christos case BFD_RELOC_PPC64_TPREL16_LO_DS:
1930 1.1 christos case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1931 1.1 christos case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1932 1.1 christos case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1933 1.1 christos case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1934 1.1 christos case BFD_RELOC_PPC64_DTPREL16_DS:
1935 1.1 christos case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1936 1.1 christos case BFD_RELOC_PPC64_DTPREL16_LO_DS:
1937 1.1 christos case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1938 1.1 christos case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1939 1.1 christos case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1940 1.1 christos case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1941 1.1 christos case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1942 1.1 christos case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1943 1.1 christos case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1944 1.1 christos case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1945 1.1 christos case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1946 1.1 christos case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1947 1.1 christos case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1948 1.1 christos case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1949 1.1 christos case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1950 1.1 christos case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1951 1.1 christos case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1952 1.1 christos case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1953 1.1 christos case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1954 1.1 christos case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1955 1.1 christos case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1956 1.1 christos case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1957 1.1 christos case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1958 1.1 christos case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1959 1.1 christos case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1960 1.1 christos case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1961 1.1 christos case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1962 1.1 christos case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1963 1.1 christos case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1964 1.1 christos case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1965 1.1 christos case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1966 1.1 christos case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1967 1.1 christos case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1968 1.1 christos case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1969 1.1 christos case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1970 1.1 christos case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1971 1.1 christos case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1972 1.1 christos case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1973 1.1 christos case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1974 1.1 christos case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1975 1.1 christos case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1976 1.1 christos case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1977 1.1 christos case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1978 1.1 christos case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1979 1.1 christos case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1980 1.1 christos case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1981 1.1 christos case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1982 1.1 christos case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1983 1.1 christos case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1984 1.1 christos case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1985 1.1 christos r = R_PPC_VLE_SDAREL_LO16A;
1986 1.1 christos break;
1987 1.1 christos case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
1988 1.1 christos r = R_PPC_VLE_SDAREL_LO16D;
1989 1.1 christos break;
1990 1.1 christos case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
1991 1.1 christos r = R_PPC_VLE_SDAREL_HI16A;
1992 1.1 christos break;
1993 1.1 christos case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
1994 1.1 christos r = R_PPC_VLE_SDAREL_HI16D;
1995 1.1 christos break;
1996 1.1 christos case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
1997 1.1 christos r = R_PPC_VLE_SDAREL_HA16A;
1998 1.1 christos break;
1999 1.1 christos case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
2000 1.1 christos r = R_PPC_VLE_SDAREL_HA16D;
2001 1.1 christos break;
2002 1.1 christos case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
2003 1.1 christos case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
2004 1.6 christos case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
2005 1.1 christos case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
2006 1.1 christos case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC_REL16DX_HA; break;
2007 1.1 christos case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
2008 1.1 christos case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
2009 1.1 christos }
2010 1.1 christos
2011 1.1 christos return ppc_elf_howto_table[r];
2012 1.1 christos };
2013 1.1 christos
2014 1.1 christos static reloc_howto_type *
2015 1.1 christos ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2016 1.1 christos const char *r_name)
2017 1.1 christos {
2018 1.1 christos unsigned int i;
2019 1.1 christos
2020 1.1 christos for (i = 0;
2021 1.1 christos i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2022 1.1 christos i++)
2023 1.1 christos if (ppc_elf_howto_raw[i].name != NULL
2024 1.1 christos && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2025 1.1 christos return &ppc_elf_howto_raw[i];
2026 1.1 christos
2027 1.1 christos return NULL;
2028 1.1 christos }
2029 1.1 christos
2030 1.1 christos /* Set the howto pointer for a PowerPC ELF reloc. */
2031 1.1 christos
2032 1.1 christos static void
2033 1.1 christos ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
2034 1.1 christos arelent *cache_ptr,
2035 1.5 christos Elf_Internal_Rela *dst)
2036 1.5 christos {
2037 1.1 christos unsigned int r_type;
2038 1.1 christos
2039 1.1 christos /* Initialize howto table if not already done. */
2040 1.1 christos if (!ppc_elf_howto_table[R_PPC_ADDR32])
2041 1.5 christos ppc_elf_howto_init ();
2042 1.5 christos
2043 1.5 christos r_type = ELF32_R_TYPE (dst->r_info);
2044 1.5 christos if (r_type >= R_PPC_max)
2045 1.5 christos {
2046 1.5 christos (*_bfd_error_handler) (_("%B: unrecognised PPC reloc number: %d"),
2047 1.5 christos abfd, r_type);
2048 1.5 christos bfd_set_error (bfd_error_bad_value);
2049 1.5 christos r_type = R_PPC_NONE;
2050 1.1 christos }
2051 1.1 christos cache_ptr->howto = ppc_elf_howto_table[r_type];
2052 1.1 christos
2053 1.1 christos /* Just because the above assert didn't trigger doesn't mean that
2054 1.1 christos ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2055 1.1 christos if (!cache_ptr->howto)
2056 1.5 christos {
2057 1.1 christos (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2058 1.1 christos abfd, r_type);
2059 1.1 christos bfd_set_error (bfd_error_bad_value);
2060 1.1 christos
2061 1.1 christos cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
2062 1.1 christos }
2063 1.1 christos }
2064 1.1 christos
2065 1.1 christos /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2066 1.1 christos
2067 1.1 christos static bfd_reloc_status_type
2068 1.1 christos ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
2069 1.1 christos arelent *reloc_entry,
2070 1.1 christos asymbol *symbol,
2071 1.1 christos void *data ATTRIBUTE_UNUSED,
2072 1.1 christos asection *input_section,
2073 1.1 christos bfd *output_bfd,
2074 1.6 christos char **error_message ATTRIBUTE_UNUSED)
2075 1.6 christos {
2076 1.6 christos enum elf_ppc_reloc_type r_type;
2077 1.6 christos long insn;
2078 1.1 christos bfd_size_type octets;
2079 1.1 christos bfd_vma value;
2080 1.1 christos
2081 1.1 christos if (output_bfd != NULL)
2082 1.1 christos {
2083 1.1 christos reloc_entry->address += input_section->output_offset;
2084 1.1 christos return bfd_reloc_ok;
2085 1.6 christos }
2086 1.6 christos
2087 1.6 christos reloc_entry->addend += 0x8000;
2088 1.6 christos r_type = reloc_entry->howto->type;
2089 1.6 christos if (r_type != R_PPC_REL16DX_HA)
2090 1.6 christos return bfd_reloc_continue;
2091 1.6 christos
2092 1.6 christos value = 0;
2093 1.6 christos if (!bfd_is_com_section (symbol->section))
2094 1.6 christos value = symbol->value;
2095 1.6 christos value += (reloc_entry->addend
2096 1.6 christos + symbol->section->output_offset
2097 1.6 christos + symbol->section->output_section->vma);
2098 1.6 christos value -= (reloc_entry->address
2099 1.6 christos + input_section->output_offset
2100 1.6 christos + input_section->output_section->vma);
2101 1.6 christos value >>= 16;
2102 1.6 christos
2103 1.6 christos octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2104 1.6 christos insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2105 1.6 christos insn &= ~0x1fffc1;
2106 1.6 christos insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2107 1.1 christos bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2108 1.1 christos return bfd_reloc_ok;
2109 1.1 christos }
2110 1.1 christos
2111 1.1 christos static bfd_reloc_status_type
2112 1.1 christos ppc_elf_unhandled_reloc (bfd *abfd,
2113 1.1 christos arelent *reloc_entry,
2114 1.1 christos asymbol *symbol,
2115 1.1 christos void *data,
2116 1.1 christos asection *input_section,
2117 1.1 christos bfd *output_bfd,
2118 1.1 christos char **error_message)
2119 1.1 christos {
2120 1.1 christos /* If this is a relocatable link (output_bfd test tells us), just
2121 1.1 christos call the generic function. Any adjustment will be done at final
2122 1.1 christos link time. */
2123 1.1 christos if (output_bfd != NULL)
2124 1.1 christos return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2125 1.1 christos input_section, output_bfd, error_message);
2126 1.1 christos
2127 1.1 christos if (error_message != NULL)
2128 1.1 christos {
2129 1.1 christos static char buf[60];
2130 1.1 christos sprintf (buf, _("generic linker can't handle %s"),
2131 1.1 christos reloc_entry->howto->name);
2132 1.1 christos *error_message = buf;
2133 1.1 christos }
2134 1.1 christos return bfd_reloc_dangerous;
2135 1.1 christos }
2136 1.1 christos
2137 1.1 christos /* Sections created by the linker. */
2139 1.1 christos
2140 1.1 christos typedef struct elf_linker_section
2141 1.1 christos {
2142 1.1 christos /* Pointer to the bfd section. */
2143 1.1 christos asection *section;
2144 1.1 christos /* Section name. */
2145 1.1 christos const char *name;
2146 1.1 christos /* Associated bss section name. */
2147 1.1 christos const char *bss_name;
2148 1.1 christos /* Associated symbol name. */
2149 1.1 christos const char *sym_name;
2150 1.1 christos /* Associated symbol. */
2151 1.1 christos struct elf_link_hash_entry *sym;
2152 1.1 christos } elf_linker_section_t;
2153 1.1 christos
2154 1.1 christos /* Linked list of allocated pointer entries. This hangs off of the
2155 1.1 christos symbol lists, and provides allows us to return different pointers,
2156 1.1 christos based on different addend's. */
2157 1.1 christos
2158 1.1 christos typedef struct elf_linker_section_pointers
2159 1.1 christos {
2160 1.1 christos /* next allocated pointer for this symbol */
2161 1.1 christos struct elf_linker_section_pointers *next;
2162 1.1 christos /* offset of pointer from beginning of section */
2163 1.1 christos bfd_vma offset;
2164 1.1 christos /* addend used */
2165 1.1 christos bfd_vma addend;
2166 1.1 christos /* which linker section this is */
2167 1.1 christos elf_linker_section_t *lsect;
2168 1.1 christos } elf_linker_section_pointers_t;
2169 1.1 christos
2170 1.1 christos struct ppc_elf_obj_tdata
2171 1.1 christos {
2172 1.1 christos struct elf_obj_tdata elf;
2173 1.1 christos
2174 1.1 christos /* A mapping from local symbols to offsets into the various linker
2175 1.1 christos sections added. This is index by the symbol index. */
2176 1.1 christos elf_linker_section_pointers_t **linker_section_pointers;
2177 1.1 christos
2178 1.1 christos /* Flags used to auto-detect plt type. */
2179 1.1 christos unsigned int makes_plt_call : 1;
2180 1.1 christos unsigned int has_rel16 : 1;
2181 1.1 christos };
2182 1.1 christos
2183 1.1 christos #define ppc_elf_tdata(bfd) \
2184 1.1 christos ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2185 1.1 christos
2186 1.1 christos #define elf_local_ptr_offsets(bfd) \
2187 1.1 christos (ppc_elf_tdata (bfd)->linker_section_pointers)
2188 1.1 christos
2189 1.1 christos #define is_ppc_elf(bfd) \
2190 1.1 christos (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2191 1.1 christos && elf_object_id (bfd) == PPC32_ELF_DATA)
2192 1.1 christos
2193 1.1 christos /* Override the generic function because we store some extras. */
2194 1.1 christos
2195 1.1 christos static bfd_boolean
2196 1.1 christos ppc_elf_mkobject (bfd *abfd)
2197 1.1 christos {
2198 1.1 christos return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
2199 1.6 christos PPC32_ELF_DATA);
2200 1.6 christos }
2201 1.6 christos
2202 1.6 christos /* When defaulting arch/mach, decode apuinfo to find a better match. */
2203 1.6 christos
2204 1.6 christos bfd_boolean
2205 1.6 christos _bfd_elf_ppc_set_arch (bfd *abfd)
2206 1.6 christos {
2207 1.6 christos unsigned long mach = 0;
2208 1.6 christos asection *s;
2209 1.6 christos unsigned char *contents;
2210 1.6 christos
2211 1.6 christos if (abfd->arch_info->bits_per_word == 32
2212 1.6 christos && bfd_big_endian (abfd))
2213 1.6 christos {
2214 1.6 christos
2215 1.6 christos for (s = abfd->sections; s != NULL; s = s->next)
2216 1.6 christos if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0)
2217 1.6 christos break;
2218 1.6 christos if (s != NULL)
2219 1.6 christos mach = bfd_mach_ppc_vle;
2220 1.6 christos }
2221 1.6 christos
2222 1.6 christos if (mach == 0)
2223 1.6 christos {
2224 1.6 christos s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2225 1.6 christos if (s != NULL && bfd_malloc_and_get_section (abfd, s, &contents))
2226 1.6 christos {
2227 1.6 christos unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4);
2228 1.6 christos unsigned int i;
2229 1.6 christos
2230 1.6 christos for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4)
2231 1.6 christos {
2232 1.6 christos unsigned int val = bfd_get_32 (abfd, contents + i);
2233 1.6 christos switch (val >> 16)
2234 1.6 christos {
2235 1.6 christos case PPC_APUINFO_PMR:
2236 1.6 christos case PPC_APUINFO_RFMCI:
2237 1.6 christos if (mach == 0)
2238 1.6 christos mach = bfd_mach_ppc_titan;
2239 1.6 christos break;
2240 1.6 christos
2241 1.6 christos case PPC_APUINFO_ISEL:
2242 1.6 christos case PPC_APUINFO_CACHELCK:
2243 1.6 christos if (mach == bfd_mach_ppc_titan)
2244 1.6 christos mach = bfd_mach_ppc_e500mc;
2245 1.6 christos break;
2246 1.6 christos
2247 1.6 christos case PPC_APUINFO_SPE:
2248 1.6 christos case PPC_APUINFO_EFS:
2249 1.6 christos case PPC_APUINFO_BRLOCK:
2250 1.6 christos if (mach != bfd_mach_ppc_vle)
2251 1.6 christos mach = bfd_mach_ppc_e500;
2252 1.6 christos
2253 1.6 christos case PPC_APUINFO_VLE:
2254 1.6 christos mach = bfd_mach_ppc_vle;
2255 1.6 christos break;
2256 1.6 christos
2257 1.6 christos default:
2258 1.6 christos mach = -1ul;
2259 1.6 christos }
2260 1.6 christos }
2261 1.6 christos free (contents);
2262 1.6 christos }
2263 1.6 christos }
2264 1.6 christos
2265 1.6 christos if (mach != 0 && mach != -1ul)
2266 1.6 christos {
2267 1.6 christos const bfd_arch_info_type *arch;
2268 1.6 christos
2269 1.6 christos for (arch = abfd->arch_info->next; arch; arch = arch->next)
2270 1.6 christos if (arch->mach == mach)
2271 1.6 christos {
2272 1.6 christos abfd->arch_info = arch;
2273 1.6 christos break;
2274 1.6 christos }
2275 1.6 christos }
2276 1.1 christos return TRUE;
2277 1.6 christos }
2278 1.1 christos
2279 1.1 christos /* Fix bad default arch selected for a 32 bit input bfd when the
2280 1.1 christos default is 64 bit. Also select arch based on apuinfo. */
2281 1.1 christos
2282 1.6 christos static bfd_boolean
2283 1.6 christos ppc_elf_object_p (bfd *abfd)
2284 1.6 christos {
2285 1.6 christos if (!abfd->arch_info->the_default)
2286 1.1 christos return TRUE;
2287 1.1 christos
2288 1.1 christos if (abfd->arch_info->bits_per_word == 64)
2289 1.1 christos {
2290 1.1 christos Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2291 1.1 christos
2292 1.1 christos if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2293 1.1 christos {
2294 1.1 christos /* Relies on arch after 64 bit default being 32 bit default. */
2295 1.1 christos abfd->arch_info = abfd->arch_info->next;
2296 1.6 christos BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2297 1.1 christos }
2298 1.1 christos }
2299 1.1 christos return _bfd_elf_ppc_set_arch (abfd);
2300 1.1 christos }
2301 1.1 christos
2302 1.1 christos /* Function to set whether a module needs the -mrelocatable bit set. */
2303 1.1 christos
2304 1.1 christos static bfd_boolean
2305 1.1 christos ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2306 1.1 christos {
2307 1.1 christos BFD_ASSERT (!elf_flags_init (abfd)
2308 1.1 christos || elf_elfheader (abfd)->e_flags == flags);
2309 1.1 christos
2310 1.1 christos elf_elfheader (abfd)->e_flags = flags;
2311 1.1 christos elf_flags_init (abfd) = TRUE;
2312 1.1 christos return TRUE;
2313 1.1 christos }
2314 1.1 christos
2315 1.1 christos /* Support for core dump NOTE sections. */
2316 1.1 christos
2317 1.1 christos static bfd_boolean
2318 1.1 christos ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2319 1.1 christos {
2320 1.1 christos int offset;
2321 1.1 christos unsigned int size;
2322 1.1 christos
2323 1.1 christos switch (note->descsz)
2324 1.1 christos {
2325 1.1 christos default:
2326 1.1 christos return FALSE;
2327 1.1 christos
2328 1.1 christos case 268: /* Linux/PPC. */
2329 1.1 christos /* pr_cursig */
2330 1.1 christos elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2331 1.1 christos
2332 1.1 christos /* pr_pid */
2333 1.1 christos elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2334 1.1 christos
2335 1.1 christos /* pr_reg */
2336 1.1 christos offset = 72;
2337 1.1 christos size = 192;
2338 1.1 christos
2339 1.1 christos break;
2340 1.1 christos }
2341 1.1 christos
2342 1.1 christos /* Make a ".reg/999" section. */
2343 1.1 christos return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2344 1.1 christos size, note->descpos + offset);
2345 1.1 christos }
2346 1.1 christos
2347 1.1 christos static bfd_boolean
2348 1.1 christos ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2349 1.1 christos {
2350 1.1 christos switch (note->descsz)
2351 1.1 christos {
2352 1.1 christos default:
2353 1.1 christos return FALSE;
2354 1.1 christos
2355 1.1 christos case 128: /* Linux/PPC elf_prpsinfo. */
2356 1.1 christos elf_tdata (abfd)->core->pid
2357 1.1 christos = bfd_get_32 (abfd, note->descdata + 16);
2358 1.1 christos elf_tdata (abfd)->core->program
2359 1.1 christos = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2360 1.1 christos elf_tdata (abfd)->core->command
2361 1.1 christos = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2362 1.1 christos }
2363 1.1 christos
2364 1.1 christos /* Note that for some reason, a spurious space is tacked
2365 1.1 christos onto the end of the args in some (at least one anyway)
2366 1.1 christos implementations, so strip it off if it exists. */
2367 1.1 christos
2368 1.1 christos {
2369 1.1 christos char *command = elf_tdata (abfd)->core->command;
2370 1.1 christos int n = strlen (command);
2371 1.1 christos
2372 1.1 christos if (0 < n && command[n - 1] == ' ')
2373 1.1 christos command[n - 1] = '\0';
2374 1.1 christos }
2375 1.1 christos
2376 1.1 christos return TRUE;
2377 1.6 christos }
2378 1.6 christos
2379 1.6 christos char *
2380 1.6 christos elfcore_write_ppc_linux_prpsinfo32
2381 1.6 christos (bfd *abfd,
2382 1.1 christos char *buf,
2383 1.1 christos int *bufsiz,
2384 1.1 christos const struct elf_internal_linux_prpsinfo *prpsinfo)
2385 1.6 christos {
2386 1.1 christos struct elf_external_ppc_linux_prpsinfo32 data;
2387 1.1 christos
2388 1.1 christos swap_ppc_linux_prpsinfo32_out (abfd, prpsinfo, &data);
2389 1.1 christos return elfcore_write_note (abfd, buf, bufsiz,
2390 1.1 christos "CORE", NT_PRPSINFO, &data, sizeof (data));
2391 1.1 christos }
2392 1.1 christos
2393 1.1 christos static char *
2394 1.1 christos ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2395 1.1 christos {
2396 1.1 christos switch (note_type)
2397 1.1 christos {
2398 1.1 christos default:
2399 1.1 christos return NULL;
2400 1.1 christos
2401 1.1 christos case NT_PRPSINFO:
2402 1.1 christos {
2403 1.1 christos char data[128];
2404 1.1 christos va_list ap;
2405 1.1 christos
2406 1.1 christos va_start (ap, note_type);
2407 1.1 christos memset (data, 0, sizeof (data));
2408 1.1 christos strncpy (data + 32, va_arg (ap, const char *), 16);
2409 1.1 christos strncpy (data + 48, va_arg (ap, const char *), 80);
2410 1.1 christos va_end (ap);
2411 1.1 christos return elfcore_write_note (abfd, buf, bufsiz,
2412 1.1 christos "CORE", note_type, data, sizeof (data));
2413 1.1 christos }
2414 1.1 christos
2415 1.1 christos case NT_PRSTATUS:
2416 1.1 christos {
2417 1.1 christos char data[268];
2418 1.1 christos va_list ap;
2419 1.1 christos long pid;
2420 1.1 christos int cursig;
2421 1.1 christos const void *greg;
2422 1.1 christos
2423 1.1 christos va_start (ap, note_type);
2424 1.1 christos memset (data, 0, 72);
2425 1.1 christos pid = va_arg (ap, long);
2426 1.1 christos bfd_put_32 (abfd, pid, data + 24);
2427 1.1 christos cursig = va_arg (ap, int);
2428 1.1 christos bfd_put_16 (abfd, cursig, data + 12);
2429 1.1 christos greg = va_arg (ap, const void *);
2430 1.1 christos memcpy (data + 72, greg, 192);
2431 1.1 christos memset (data + 264, 0, 4);
2432 1.1 christos va_end (ap);
2433 1.1 christos return elfcore_write_note (abfd, buf, bufsiz,
2434 1.1 christos "CORE", note_type, data, sizeof (data));
2435 1.1 christos }
2436 1.1 christos }
2437 1.1 christos }
2438 1.1 christos
2439 1.1 christos static flagword
2440 1.1 christos ppc_elf_lookup_section_flags (char *flag_name)
2441 1.1 christos {
2442 1.1 christos
2443 1.1 christos if (!strcmp (flag_name, "SHF_PPC_VLE"))
2444 1.1 christos return SHF_PPC_VLE;
2445 1.1 christos
2446 1.1 christos return 0;
2447 1.1 christos }
2448 1.1 christos
2449 1.1 christos /* Add the VLE flag if required. */
2450 1.1 christos
2451 1.1 christos bfd_boolean
2452 1.1 christos ppc_elf_section_processing (bfd *abfd, Elf_Internal_Shdr *shdr)
2453 1.1 christos {
2454 1.1 christos if (bfd_get_mach (abfd) == bfd_mach_ppc_vle
2455 1.1 christos && (shdr->sh_flags & SHF_EXECINSTR) != 0)
2456 1.1 christos shdr->sh_flags |= SHF_PPC_VLE;
2457 1.1 christos
2458 1.1 christos return TRUE;
2459 1.1 christos }
2460 1.1 christos
2461 1.1 christos /* Return address for Ith PLT stub in section PLT, for relocation REL
2462 1.1 christos or (bfd_vma) -1 if it should not be included. */
2463 1.1 christos
2464 1.1 christos static bfd_vma
2465 1.1 christos ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2466 1.1 christos const asection *plt ATTRIBUTE_UNUSED,
2467 1.1 christos const arelent *rel)
2468 1.1 christos {
2469 1.1 christos return rel->address;
2470 1.1 christos }
2471 1.1 christos
2472 1.1 christos /* Handle a PowerPC specific section when reading an object file. This
2473 1.1 christos is called when bfd_section_from_shdr finds a section with an unknown
2474 1.1 christos type. */
2475 1.1 christos
2476 1.1 christos static bfd_boolean
2477 1.1 christos ppc_elf_section_from_shdr (bfd *abfd,
2478 1.1 christos Elf_Internal_Shdr *hdr,
2479 1.1 christos const char *name,
2480 1.1 christos int shindex)
2481 1.1 christos {
2482 1.1 christos asection *newsect;
2483 1.1 christos flagword flags;
2484 1.1 christos
2485 1.1 christos if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2486 1.1 christos return FALSE;
2487 1.1 christos
2488 1.1 christos newsect = hdr->bfd_section;
2489 1.1 christos flags = bfd_get_section_flags (abfd, newsect);
2490 1.1 christos if (hdr->sh_flags & SHF_EXCLUDE)
2491 1.1 christos flags |= SEC_EXCLUDE;
2492 1.1 christos
2493 1.1 christos if (hdr->sh_type == SHT_ORDERED)
2494 1.1 christos flags |= SEC_SORT_ENTRIES;
2495 1.1 christos
2496 1.1 christos bfd_set_section_flags (abfd, newsect, flags);
2497 1.1 christos return TRUE;
2498 1.1 christos }
2499 1.1 christos
2500 1.1 christos /* Set up any other section flags and such that may be necessary. */
2501 1.1 christos
2502 1.1 christos static bfd_boolean
2503 1.1 christos ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2504 1.1 christos Elf_Internal_Shdr *shdr,
2505 1.1 christos asection *asect)
2506 1.1 christos {
2507 1.1 christos if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2508 1.1 christos shdr->sh_type = SHT_ORDERED;
2509 1.1 christos
2510 1.1 christos return TRUE;
2511 1.1 christos }
2512 1.1 christos
2513 1.1 christos /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2514 1.1 christos need to bump up the number of section headers. */
2515 1.1 christos
2516 1.1 christos static int
2517 1.1 christos ppc_elf_additional_program_headers (bfd *abfd,
2518 1.1 christos struct bfd_link_info *info ATTRIBUTE_UNUSED)
2519 1.1 christos {
2520 1.1 christos asection *s;
2521 1.1 christos int ret = 0;
2522 1.1 christos
2523 1.1 christos s = bfd_get_section_by_name (abfd, ".sbss2");
2524 1.1 christos if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2525 1.1 christos ++ret;
2526 1.1 christos
2527 1.1 christos s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2528 1.1 christos if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2529 1.1 christos ++ret;
2530 1.1 christos
2531 1.1 christos return ret;
2532 1.1 christos }
2533 1.1 christos
2534 1.1 christos /* Modify the segment map for VLE executables. */
2535 1.1 christos
2536 1.1 christos bfd_boolean
2537 1.1 christos ppc_elf_modify_segment_map (bfd *abfd,
2538 1.1 christos struct bfd_link_info *info ATTRIBUTE_UNUSED)
2539 1.1 christos {
2540 1.1 christos struct elf_segment_map *m, *n;
2541 1.1 christos bfd_size_type amt;
2542 1.1 christos unsigned int j, k;
2543 1.1 christos bfd_boolean sect0_vle, sectj_vle;
2544 1.1 christos
2545 1.1 christos /* At this point in the link, output sections have already been sorted by
2546 1.1 christos LMA and assigned to segments. All that is left to do is to ensure
2547 1.1 christos there is no mixing of VLE & non-VLE sections in a text segment.
2548 1.1 christos If we find that case, we split the segment.
2549 1.1 christos We maintain the original output section order. */
2550 1.1 christos
2551 1.1 christos for (m = elf_seg_map (abfd); m != NULL; m = m->next)
2552 1.1 christos {
2553 1.1 christos if (m->count == 0)
2554 1.1 christos continue;
2555 1.1 christos
2556 1.1 christos sect0_vle = (elf_section_flags (m->sections[0]) & SHF_PPC_VLE) != 0;
2557 1.1 christos for (j = 1; j < m->count; ++j)
2558 1.1 christos {
2559 1.1 christos sectj_vle = (elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0;
2560 1.1 christos
2561 1.1 christos if (sectj_vle != sect0_vle)
2562 1.1 christos break;
2563 1.1 christos }
2564 1.1 christos if (j >= m->count)
2565 1.1 christos continue;
2566 1.1 christos
2567 1.1 christos /* sections 0..j-1 stay in this (current) segment,
2568 1.1 christos the remainder are put in a new segment.
2569 1.1 christos The scan resumes with the new segment. */
2570 1.1 christos
2571 1.1 christos /* Fix the new segment. */
2572 1.1 christos amt = sizeof (struct elf_segment_map);
2573 1.1 christos amt += (m->count - j - 1) * sizeof (asection *);
2574 1.1 christos n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2575 1.1 christos if (n == NULL)
2576 1.1 christos return FALSE;
2577 1.1 christos
2578 1.1 christos n->p_type = PT_LOAD;
2579 1.1 christos n->p_flags = PF_X | PF_R;
2580 1.1 christos if (sectj_vle)
2581 1.1 christos n->p_flags |= PF_PPC_VLE;
2582 1.1 christos n->count = m->count - j;
2583 1.1 christos for (k = 0; k < n->count; ++k)
2584 1.1 christos {
2585 1.1 christos n->sections[k] = m->sections[j+k];
2586 1.1 christos m->sections[j+k] = NULL;
2587 1.1 christos }
2588 1.1 christos n->next = m->next;
2589 1.1 christos m->next = n;
2590 1.1 christos
2591 1.1 christos /* Fix the current segment */
2592 1.1 christos m->count = j;
2593 1.1 christos }
2594 1.1 christos
2595 1.1 christos return TRUE;
2596 1.1 christos }
2597 1.1 christos
2598 1.1 christos /* Add extra PPC sections -- Note, for now, make .sbss2 and
2599 1.1 christos .PPC.EMB.sbss0 a normal section, and not a bss section so
2600 1.1 christos that the linker doesn't crater when trying to make more than
2601 1.1 christos 2 sections. */
2602 1.6 christos
2603 1.6 christos static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2604 1.6 christos {
2605 1.6 christos { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2606 1.6 christos { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2607 1.6 christos { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2608 1.6 christos { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2609 1.6 christos { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2610 1.6 christos { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2611 1.6 christos { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 },
2612 1.1 christos { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2613 1.1 christos { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2614 1.1 christos { NULL, 0, 0, 0, 0 }
2615 1.1 christos };
2616 1.1 christos
2617 1.1 christos /* This is what we want for new plt/got. */
2618 1.1 christos static struct bfd_elf_special_section ppc_alt_plt =
2619 1.1 christos { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2620 1.1 christos
2621 1.1 christos static const struct bfd_elf_special_section *
2622 1.1 christos ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
2623 1.1 christos {
2624 1.1 christos const struct bfd_elf_special_section *ssect;
2625 1.1 christos
2626 1.1 christos /* See if this is one of the special sections. */
2627 1.1 christos if (sec->name == NULL)
2628 1.1 christos return NULL;
2629 1.1 christos
2630 1.1 christos ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2631 1.1 christos sec->use_rela_p);
2632 1.1 christos if (ssect != NULL)
2633 1.1 christos {
2634 1.1 christos if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2635 1.1 christos ssect = &ppc_alt_plt;
2636 1.1 christos return ssect;
2637 1.1 christos }
2638 1.1 christos
2639 1.1 christos return _bfd_elf_get_sec_type_attr (abfd, sec);
2640 1.1 christos }
2641 1.1 christos
2642 1.1 christos /* Very simple linked list structure for recording apuinfo values. */
2644 1.1 christos typedef struct apuinfo_list
2645 1.1 christos {
2646 1.1 christos struct apuinfo_list *next;
2647 1.1 christos unsigned long value;
2648 1.1 christos }
2649 1.1 christos apuinfo_list;
2650 1.1 christos
2651 1.1 christos static apuinfo_list *head;
2652 1.1 christos static bfd_boolean apuinfo_set;
2653 1.1 christos
2654 1.1 christos static void
2655 1.1 christos apuinfo_list_init (void)
2656 1.1 christos {
2657 1.1 christos head = NULL;
2658 1.1 christos apuinfo_set = FALSE;
2659 1.1 christos }
2660 1.1 christos
2661 1.1 christos static void
2662 1.1 christos apuinfo_list_add (unsigned long value)
2663 1.1 christos {
2664 1.1 christos apuinfo_list *entry = head;
2665 1.1 christos
2666 1.1 christos while (entry != NULL)
2667 1.1 christos {
2668 1.1 christos if (entry->value == value)
2669 1.1 christos return;
2670 1.1 christos entry = entry->next;
2671 1.1 christos }
2672 1.1 christos
2673 1.1 christos entry = bfd_malloc (sizeof (* entry));
2674 1.1 christos if (entry == NULL)
2675 1.1 christos return;
2676 1.1 christos
2677 1.1 christos entry->value = value;
2678 1.1 christos entry->next = head;
2679 1.1 christos head = entry;
2680 1.1 christos }
2681 1.1 christos
2682 1.1 christos static unsigned
2683 1.1 christos apuinfo_list_length (void)
2684 1.1 christos {
2685 1.1 christos apuinfo_list *entry;
2686 1.1 christos unsigned long count;
2687 1.1 christos
2688 1.1 christos for (entry = head, count = 0;
2689 1.1 christos entry;
2690 1.1 christos entry = entry->next)
2691 1.1 christos ++ count;
2692 1.1 christos
2693 1.1 christos return count;
2694 1.1 christos }
2695 1.1 christos
2696 1.1 christos static inline unsigned long
2697 1.1 christos apuinfo_list_element (unsigned long number)
2698 1.1 christos {
2699 1.1 christos apuinfo_list * entry;
2700 1.1 christos
2701 1.1 christos for (entry = head;
2702 1.1 christos entry && number --;
2703 1.1 christos entry = entry->next)
2704 1.1 christos ;
2705 1.1 christos
2706 1.1 christos return entry ? entry->value : 0;
2707 1.1 christos }
2708 1.1 christos
2709 1.1 christos static void
2710 1.1 christos apuinfo_list_finish (void)
2711 1.1 christos {
2712 1.1 christos apuinfo_list *entry;
2713 1.1 christos
2714 1.1 christos for (entry = head; entry;)
2715 1.1 christos {
2716 1.1 christos apuinfo_list *next = entry->next;
2717 1.1 christos free (entry);
2718 1.1 christos entry = next;
2719 1.1 christos }
2720 1.1 christos
2721 1.1 christos head = NULL;
2722 1.1 christos }
2723 1.1 christos
2724 1.1 christos /* Scan the input BFDs and create a linked list of
2725 1.1 christos the APUinfo values that will need to be emitted. */
2726 1.1 christos
2727 1.1 christos static void
2728 1.1 christos ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2729 1.1 christos {
2730 1.1 christos bfd *ibfd;
2731 1.1 christos asection *asec;
2732 1.1 christos char *buffer = NULL;
2733 1.1 christos bfd_size_type largest_input_size = 0;
2734 1.1 christos unsigned i;
2735 1.1 christos unsigned long length;
2736 1.1 christos const char *error_message = NULL;
2737 1.1 christos
2738 1.1 christos if (link_info == NULL)
2739 1.1 christos return;
2740 1.3 christos
2741 1.1 christos apuinfo_list_init ();
2742 1.1 christos
2743 1.1 christos /* Read in the input sections contents. */
2744 1.1 christos for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
2745 1.1 christos {
2746 1.1 christos unsigned long datum;
2747 1.1 christos
2748 1.1 christos asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2749 1.1 christos if (asec == NULL)
2750 1.1 christos continue;
2751 1.1 christos
2752 1.1 christos error_message = _("corrupt %s section in %B");
2753 1.1 christos length = asec->size;
2754 1.1 christos if (length < 20)
2755 1.1 christos goto fail;
2756 1.1 christos
2757 1.1 christos apuinfo_set = TRUE;
2758 1.1 christos if (largest_input_size < asec->size)
2759 1.1 christos {
2760 1.1 christos if (buffer)
2761 1.1 christos free (buffer);
2762 1.1 christos largest_input_size = asec->size;
2763 1.1 christos buffer = bfd_malloc (largest_input_size);
2764 1.1 christos if (!buffer)
2765 1.1 christos return;
2766 1.1 christos }
2767 1.1 christos
2768 1.1 christos if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2769 1.1 christos || (bfd_bread (buffer, length, ibfd) != length))
2770 1.1 christos {
2771 1.1 christos error_message = _("unable to read in %s section from %B");
2772 1.1 christos goto fail;
2773 1.1 christos }
2774 1.1 christos
2775 1.1 christos /* Verify the contents of the header. Note - we have to
2776 1.1 christos extract the values this way in order to allow for a
2777 1.1 christos host whose endian-ness is different from the target. */
2778 1.1 christos datum = bfd_get_32 (ibfd, buffer);
2779 1.1 christos if (datum != sizeof APUINFO_LABEL)
2780 1.1 christos goto fail;
2781 1.1 christos
2782 1.1 christos datum = bfd_get_32 (ibfd, buffer + 8);
2783 1.1 christos if (datum != 0x2)
2784 1.1 christos goto fail;
2785 1.1 christos
2786 1.1 christos if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2787 1.1 christos goto fail;
2788 1.1 christos
2789 1.1 christos /* Get the number of bytes used for apuinfo entries. */
2790 1.1 christos datum = bfd_get_32 (ibfd, buffer + 4);
2791 1.1 christos if (datum + 20 != length)
2792 1.1 christos goto fail;
2793 1.1 christos
2794 1.1 christos /* Scan the apuinfo section, building a list of apuinfo numbers. */
2795 1.1 christos for (i = 0; i < datum; i += 4)
2796 1.1 christos apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2797 1.1 christos }
2798 1.1 christos
2799 1.1 christos error_message = NULL;
2800 1.1 christos
2801 1.1 christos if (apuinfo_set)
2802 1.1 christos {
2803 1.1 christos /* Compute the size of the output section. */
2804 1.1 christos unsigned num_entries = apuinfo_list_length ();
2805 1.1 christos
2806 1.1 christos /* Set the output section size, if it exists. */
2807 1.1 christos asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2808 1.1 christos
2809 1.1 christos if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2810 1.1 christos {
2811 1.1 christos ibfd = abfd;
2812 1.1 christos error_message = _("warning: unable to set size of %s section in %B");
2813 1.1 christos }
2814 1.1 christos }
2815 1.1 christos
2816 1.1 christos fail:
2817 1.1 christos if (buffer)
2818 1.1 christos free (buffer);
2819 1.1 christos
2820 1.1 christos if (error_message)
2821 1.1 christos (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2822 1.1 christos }
2823 1.1 christos
2824 1.1 christos /* Prevent the output section from accumulating the input sections'
2825 1.1 christos contents. We have already stored this in our linked list structure. */
2826 1.1 christos
2827 1.1 christos static bfd_boolean
2828 1.1 christos ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2829 1.1 christos struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2830 1.1 christos asection *asec,
2831 1.1 christos bfd_byte *contents ATTRIBUTE_UNUSED)
2832 1.1 christos {
2833 1.1 christos return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2834 1.1 christos }
2835 1.1 christos
2836 1.1 christos /* Finally we can generate the output section. */
2837 1.1 christos
2838 1.1 christos static void
2839 1.1 christos ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2840 1.1 christos {
2841 1.1 christos bfd_byte *buffer;
2842 1.1 christos asection *asec;
2843 1.1 christos unsigned i;
2844 1.1 christos unsigned num_entries;
2845 1.1 christos bfd_size_type length;
2846 1.1 christos
2847 1.1 christos asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2848 1.1 christos if (asec == NULL)
2849 1.1 christos return;
2850 1.1 christos
2851 1.1 christos if (!apuinfo_set)
2852 1.1 christos return;
2853 1.1 christos
2854 1.1 christos length = asec->size;
2855 1.1 christos if (length < 20)
2856 1.1 christos return;
2857 1.1 christos
2858 1.1 christos buffer = bfd_malloc (length);
2859 1.1 christos if (buffer == NULL)
2860 1.1 christos {
2861 1.1 christos (*_bfd_error_handler)
2862 1.1 christos (_("failed to allocate space for new APUinfo section."));
2863 1.1 christos return;
2864 1.1 christos }
2865 1.1 christos
2866 1.1 christos /* Create the apuinfo header. */
2867 1.1 christos num_entries = apuinfo_list_length ();
2868 1.1 christos bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2869 1.1 christos bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2870 1.1 christos bfd_put_32 (abfd, 0x2, buffer + 8);
2871 1.1 christos strcpy ((char *) buffer + 12, APUINFO_LABEL);
2872 1.1 christos
2873 1.1 christos length = 20;
2874 1.1 christos for (i = 0; i < num_entries; i++)
2875 1.1 christos {
2876 1.1 christos bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2877 1.1 christos length += 4;
2878 1.1 christos }
2879 1.1 christos
2880 1.1 christos if (length != asec->size)
2881 1.1 christos (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2882 1.1 christos
2883 1.1 christos if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2884 1.1 christos (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2885 1.1 christos
2886 1.1 christos free (buffer);
2887 1.1 christos
2888 1.1 christos apuinfo_list_finish ();
2889 1.1 christos }
2890 1.1 christos
2891 1.1 christos static bfd_boolean
2893 1.1 christos is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2894 1.1 christos {
2895 1.1 christos bfd_byte buf[GLINK_ENTRY_SIZE];
2896 1.1 christos
2897 1.1 christos if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2898 1.1 christos return FALSE;
2899 1.1 christos
2900 1.1 christos return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2901 1.1 christos && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2902 1.1 christos && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2903 1.1 christos && bfd_get_32 (abfd, buf + 12) == BCTR);
2904 1.1 christos }
2905 1.1 christos
2906 1.1 christos static bfd_boolean
2907 1.1 christos section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2908 1.1 christos {
2909 1.1 christos bfd_vma vma = *(bfd_vma *) ptr;
2910 1.1 christos return ((section->flags & SEC_ALLOC) != 0
2911 1.1 christos && section->vma <= vma
2912 1.1 christos && vma < section->vma + section->size);
2913 1.1 christos }
2914 1.1 christos
2915 1.1 christos static long
2916 1.1 christos ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2917 1.1 christos long dynsymcount, asymbol **dynsyms,
2918 1.1 christos asymbol **ret)
2919 1.1 christos {
2920 1.1 christos bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2921 1.1 christos asection *plt, *relplt, *dynamic, *glink;
2922 1.1 christos bfd_vma glink_vma = 0;
2923 1.1 christos bfd_vma resolv_vma = 0;
2924 1.1 christos bfd_vma stub_vma;
2925 1.1 christos asymbol *s;
2926 1.1 christos arelent *p;
2927 1.1 christos long count, i;
2928 1.1 christos size_t size;
2929 1.1 christos char *names;
2930 1.1 christos bfd_byte buf[4];
2931 1.1 christos
2932 1.1 christos *ret = NULL;
2933 1.1 christos
2934 1.1 christos if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2935 1.1 christos return 0;
2936 1.1 christos
2937 1.1 christos if (dynsymcount <= 0)
2938 1.1 christos return 0;
2939 1.1 christos
2940 1.1 christos relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2941 1.1 christos if (relplt == NULL)
2942 1.1 christos return 0;
2943 1.1 christos
2944 1.1 christos plt = bfd_get_section_by_name (abfd, ".plt");
2945 1.1 christos if (plt == NULL)
2946 1.1 christos return 0;
2947 1.1 christos
2948 1.1 christos /* Call common code to handle old-style executable PLTs. */
2949 1.1 christos if (elf_section_flags (plt) & SHF_EXECINSTR)
2950 1.1 christos return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2951 1.1 christos dynsymcount, dynsyms, ret);
2952 1.1 christos
2953 1.1 christos /* If this object was prelinked, the prelinker stored the address
2954 1.1 christos of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2955 1.1 christos dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2956 1.1 christos if (dynamic != NULL)
2957 1.1 christos {
2958 1.1 christos bfd_byte *dynbuf, *extdyn, *extdynend;
2959 1.1 christos size_t extdynsize;
2960 1.1 christos void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2961 1.1 christos
2962 1.1 christos if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2963 1.1 christos return -1;
2964 1.1 christos
2965 1.1 christos extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2966 1.1 christos swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2967 1.1 christos
2968 1.1 christos extdyn = dynbuf;
2969 1.1 christos extdynend = extdyn + dynamic->size;
2970 1.1 christos for (; extdyn < extdynend; extdyn += extdynsize)
2971 1.1 christos {
2972 1.1 christos Elf_Internal_Dyn dyn;
2973 1.1 christos (*swap_dyn_in) (abfd, extdyn, &dyn);
2974 1.1 christos
2975 1.1 christos if (dyn.d_tag == DT_NULL)
2976 1.1 christos break;
2977 1.1 christos
2978 1.1 christos if (dyn.d_tag == DT_PPC_GOT)
2979 1.1 christos {
2980 1.1 christos unsigned int g_o_t = dyn.d_un.d_val;
2981 1.1 christos asection *got = bfd_get_section_by_name (abfd, ".got");
2982 1.1 christos if (got != NULL
2983 1.1 christos && bfd_get_section_contents (abfd, got, buf,
2984 1.1 christos g_o_t - got->vma + 4, 4))
2985 1.1 christos glink_vma = bfd_get_32 (abfd, buf);
2986 1.1 christos break;
2987 1.1 christos }
2988 1.1 christos }
2989 1.1 christos free (dynbuf);
2990 1.1 christos }
2991 1.1 christos
2992 1.1 christos /* Otherwise we read the first plt entry. */
2993 1.1 christos if (glink_vma == 0)
2994 1.1 christos {
2995 1.1 christos if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2996 1.1 christos glink_vma = bfd_get_32 (abfd, buf);
2997 1.1 christos }
2998 1.1 christos
2999 1.1 christos if (glink_vma == 0)
3000 1.1 christos return 0;
3001 1.1 christos
3002 1.1 christos /* The .glink section usually does not survive the final
3003 1.1 christos link; search for the section (usually .text) where the
3004 1.1 christos glink stubs now reside. */
3005 1.1 christos glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
3006 1.1 christos if (glink == NULL)
3007 1.1 christos return 0;
3008 1.1 christos
3009 1.1 christos /* Determine glink PLT resolver by reading the relative branch
3010 1.1 christos from the first glink stub. */
3011 1.1 christos if (bfd_get_section_contents (abfd, glink, buf,
3012 1.1 christos glink_vma - glink->vma, 4))
3013 1.1 christos {
3014 1.1 christos unsigned int insn = bfd_get_32 (abfd, buf);
3015 1.1 christos
3016 1.1 christos /* The first glink stub may either branch to the resolver ... */
3017 1.1 christos insn ^= B;
3018 1.1 christos if ((insn & ~0x3fffffc) == 0)
3019 1.1 christos resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
3020 1.1 christos
3021 1.1 christos /* ... or fall through a bunch of NOPs. */
3022 1.1 christos else if ((insn ^ B ^ NOP) == 0)
3023 1.1 christos for (i = 4;
3024 1.1 christos bfd_get_section_contents (abfd, glink, buf,
3025 1.1 christos glink_vma - glink->vma + i, 4);
3026 1.1 christos i += 4)
3027 1.1 christos if (bfd_get_32 (abfd, buf) != NOP)
3028 1.1 christos {
3029 1.1 christos resolv_vma = glink_vma + i;
3030 1.1 christos break;
3031 1.1 christos }
3032 1.1 christos }
3033 1.1 christos
3034 1.1 christos count = relplt->size / sizeof (Elf32_External_Rela);
3035 1.1 christos /* If the stubs are those for -shared/-pie then we might have
3036 1.1 christos multiple stubs for each plt entry. If that is the case then
3037 1.1 christos there is no way to associate stubs with their plt entries short
3038 1.1 christos of figuring out the GOT pointer value used in the stub. */
3039 1.1 christos if (!is_nonpic_glink_stub (abfd, glink,
3040 1.1 christos glink_vma - GLINK_ENTRY_SIZE - glink->vma))
3041 1.1 christos return 0;
3042 1.1 christos
3043 1.1 christos slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3044 1.1 christos if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
3045 1.1 christos return -1;
3046 1.1 christos
3047 1.1 christos size = count * sizeof (asymbol);
3048 1.1 christos p = relplt->relocation;
3049 1.1 christos for (i = 0; i < count; i++, p++)
3050 1.1 christos {
3051 1.1 christos size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3052 1.1 christos if (p->addend != 0)
3053 1.1 christos size += sizeof ("+0x") - 1 + 8;
3054 1.1 christos }
3055 1.1 christos
3056 1.1 christos size += sizeof (asymbol) + sizeof ("__glink");
3057 1.1 christos
3058 1.1 christos if (resolv_vma)
3059 1.1 christos size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3060 1.5 christos
3061 1.1 christos s = *ret = bfd_malloc (size);
3062 1.5 christos if (s == NULL)
3063 1.5 christos return -1;
3064 1.1 christos
3065 1.1 christos stub_vma = glink_vma;
3066 1.1 christos names = (char *) (s + count + 1 + (resolv_vma != 0));
3067 1.1 christos p = relplt->relocation + count - 1;
3068 1.1 christos for (i = 0; i < count; i++)
3069 1.1 christos {
3070 1.1 christos size_t len;
3071 1.1 christos
3072 1.1 christos *s = **p->sym_ptr_ptr;
3073 1.1 christos /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3074 1.5 christos we are defining a symbol, ensure one of them is set. */
3075 1.5 christos if ((s->flags & BSF_LOCAL) == 0)
3076 1.5 christos s->flags |= BSF_GLOBAL;
3077 1.1 christos s->flags |= BSF_SYNTHETIC;
3078 1.1 christos s->section = glink;
3079 1.1 christos stub_vma -= 16;
3080 1.1 christos if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
3081 1.1 christos stub_vma -= 32;
3082 1.1 christos s->value = stub_vma - glink->vma;
3083 1.1 christos s->name = names;
3084 1.1 christos s->udata.p = NULL;
3085 1.1 christos len = strlen ((*p->sym_ptr_ptr)->name);
3086 1.1 christos memcpy (names, (*p->sym_ptr_ptr)->name, len);
3087 1.1 christos names += len;
3088 1.1 christos if (p->addend != 0)
3089 1.1 christos {
3090 1.1 christos memcpy (names, "+0x", sizeof ("+0x") - 1);
3091 1.1 christos names += sizeof ("+0x") - 1;
3092 1.1 christos bfd_sprintf_vma (abfd, names, p->addend);
3093 1.5 christos names += strlen (names);
3094 1.1 christos }
3095 1.1 christos memcpy (names, "@plt", sizeof ("@plt"));
3096 1.1 christos names += sizeof ("@plt");
3097 1.1 christos ++s;
3098 1.1 christos --p;
3099 1.1 christos }
3100 1.1 christos
3101 1.1 christos /* Add a symbol at the start of the glink branch table. */
3102 1.1 christos memset (s, 0, sizeof *s);
3103 1.1 christos s->the_bfd = abfd;
3104 1.1 christos s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3105 1.1 christos s->section = glink;
3106 1.1 christos s->value = glink_vma - glink->vma;
3107 1.1 christos s->name = names;
3108 1.1 christos memcpy (names, "__glink", sizeof ("__glink"));
3109 1.1 christos names += sizeof ("__glink");
3110 1.1 christos s++;
3111 1.1 christos count++;
3112 1.1 christos
3113 1.1 christos if (resolv_vma)
3114 1.1 christos {
3115 1.1 christos /* Add a symbol for the glink PLT resolver. */
3116 1.1 christos memset (s, 0, sizeof *s);
3117 1.1 christos s->the_bfd = abfd;
3118 1.1 christos s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3119 1.1 christos s->section = glink;
3120 1.1 christos s->value = resolv_vma - glink->vma;
3121 1.1 christos s->name = names;
3122 1.1 christos memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3123 1.1 christos names += sizeof ("__glink_PLTresolve");
3124 1.1 christos s++;
3125 1.1 christos count++;
3126 1.1 christos }
3127 1.1 christos
3128 1.1 christos return count;
3129 1.1 christos }
3130 1.1 christos
3131 1.1 christos /* The following functions are specific to the ELF linker, while
3133 1.1 christos functions above are used generally. They appear in this file more
3134 1.1 christos or less in the order in which they are called. eg.
3135 1.1 christos ppc_elf_check_relocs is called early in the link process,
3136 1.1 christos ppc_elf_finish_dynamic_sections is one of the last functions
3137 1.1 christos called. */
3138 1.1 christos
3139 1.1 christos /* Track PLT entries needed for a given symbol. We might need more
3140 1.1 christos than one glink entry per symbol when generating a pic binary. */
3141 1.1 christos struct plt_entry
3142 1.1 christos {
3143 1.1 christos struct plt_entry *next;
3144 1.1 christos
3145 1.1 christos /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3146 1.1 christos This field stores the offset into .got2 used to initialise the
3147 1.1 christos GOT pointer reg. It will always be at least 32768. (Current
3148 1.1 christos gcc always uses an offset of 32768, but ld -r will pack .got2
3149 1.1 christos sections together resulting in larger offsets). */
3150 1.1 christos bfd_vma addend;
3151 1.1 christos
3152 1.1 christos /* The .got2 section. */
3153 1.1 christos asection *sec;
3154 1.1 christos
3155 1.1 christos /* PLT refcount or offset. */
3156 1.1 christos union
3157 1.1 christos {
3158 1.1 christos bfd_signed_vma refcount;
3159 1.1 christos bfd_vma offset;
3160 1.1 christos } plt;
3161 1.1 christos
3162 1.1 christos /* .glink stub offset. */
3163 1.1 christos bfd_vma glink_offset;
3164 1.1 christos };
3165 1.1 christos
3166 1.1 christos /* Of those relocs that might be copied as dynamic relocs, this function
3167 1.1 christos selects those that must be copied when linking a shared library,
3168 1.1 christos even when the symbol is local. */
3169 1.1 christos
3170 1.1 christos static int
3171 1.1 christos must_be_dyn_reloc (struct bfd_link_info *info,
3172 1.1 christos enum elf_ppc_reloc_type r_type)
3173 1.1 christos {
3174 1.1 christos switch (r_type)
3175 1.1 christos {
3176 1.1 christos default:
3177 1.1 christos return 1;
3178 1.1 christos
3179 1.1 christos case R_PPC_REL24:
3180 1.1 christos case R_PPC_REL14:
3181 1.1 christos case R_PPC_REL14_BRTAKEN:
3182 1.1 christos case R_PPC_REL14_BRNTAKEN:
3183 1.1 christos case R_PPC_REL32:
3184 1.1 christos return 0;
3185 1.6 christos
3186 1.1 christos case R_PPC_TPREL32:
3187 1.1 christos case R_PPC_TPREL16:
3188 1.1 christos case R_PPC_TPREL16_LO:
3189 1.1 christos case R_PPC_TPREL16_HI:
3190 1.1 christos case R_PPC_TPREL16_HA:
3191 1.1 christos return !bfd_link_executable (info);
3192 1.1 christos }
3193 1.1 christos }
3194 1.1 christos
3195 1.1 christos /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3196 1.1 christos copying dynamic variables from a shared lib into an app's dynbss
3197 1.1 christos section, and instead use a dynamic relocation to point into the
3198 1.1 christos shared lib. */
3199 1.1 christos #define ELIMINATE_COPY_RELOCS 1
3200 1.1 christos
3201 1.1 christos /* Used to track dynamic relocations for local symbols. */
3202 1.1 christos struct ppc_dyn_relocs
3203 1.1 christos {
3204 1.1 christos struct ppc_dyn_relocs *next;
3205 1.1 christos
3206 1.1 christos /* The input section of the reloc. */
3207 1.1 christos asection *sec;
3208 1.1 christos
3209 1.1 christos /* Total number of relocs copied for the input section. */
3210 1.1 christos unsigned int count : 31;
3211 1.1 christos
3212 1.1 christos /* Whether this entry is for STT_GNU_IFUNC symbols. */
3213 1.1 christos unsigned int ifunc : 1;
3214 1.1 christos };
3215 1.1 christos
3216 1.1 christos /* PPC ELF linker hash entry. */
3217 1.1 christos
3218 1.1 christos struct ppc_elf_link_hash_entry
3219 1.1 christos {
3220 1.1 christos struct elf_link_hash_entry elf;
3221 1.1 christos
3222 1.1 christos /* If this symbol is used in the linker created sections, the processor
3223 1.1 christos specific backend uses this field to map the field into the offset
3224 1.1 christos from the beginning of the section. */
3225 1.1 christos elf_linker_section_pointers_t *linker_section_pointer;
3226 1.1 christos
3227 1.1 christos /* Track dynamic relocs copied for this symbol. */
3228 1.1 christos struct elf_dyn_relocs *dyn_relocs;
3229 1.1 christos
3230 1.1 christos /* Contexts in which symbol is used in the GOT (or TOC).
3231 1.1 christos TLS_GD .. TLS_TLS bits are or'd into the mask as the
3232 1.1 christos corresponding relocs are encountered during check_relocs.
3233 1.1 christos tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3234 1.1 christos indicate the corresponding GOT entry type is not needed. */
3235 1.1 christos #define TLS_GD 1 /* GD reloc. */
3236 1.1 christos #define TLS_LD 2 /* LD reloc. */
3237 1.1 christos #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3238 1.1 christos #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3239 1.1 christos #define TLS_TLS 16 /* Any TLS reloc. */
3240 1.5 christos #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3241 1.5 christos #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3242 1.5 christos char tls_mask;
3243 1.5 christos
3244 1.5 christos /* Nonzero if we have seen a small data relocation referring to this
3245 1.1 christos symbol. */
3246 1.1 christos unsigned char has_sda_refs : 1;
3247 1.1 christos
3248 1.1 christos /* Flag use of given relocations. */
3249 1.1 christos unsigned char has_addr16_ha : 1;
3250 1.1 christos unsigned char has_addr16_lo : 1;
3251 1.1 christos };
3252 1.1 christos
3253 1.1 christos #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3254 1.1 christos
3255 1.3 christos /* PPC ELF linker hash table. */
3256 1.3 christos
3257 1.3 christos struct ppc_elf_link_hash_table
3258 1.1 christos {
3259 1.1 christos struct elf_link_hash_table elf;
3260 1.1 christos
3261 1.1 christos /* Various options passed from the linker. */
3262 1.1 christos struct ppc_elf_params *params;
3263 1.1 christos
3264 1.1 christos /* Short-cuts to get to dynamic linker sections. */
3265 1.1 christos asection *got;
3266 1.1 christos asection *relgot;
3267 1.1 christos asection *glink;
3268 1.1 christos asection *plt;
3269 1.1 christos asection *relplt;
3270 1.1 christos asection *iplt;
3271 1.1 christos asection *reliplt;
3272 1.1 christos asection *dynbss;
3273 1.1 christos asection *relbss;
3274 1.1 christos asection *dynsbss;
3275 1.1 christos asection *relsbss;
3276 1.1 christos elf_linker_section_t sdata[2];
3277 1.1 christos asection *sbss;
3278 1.1 christos asection *glink_eh_frame;
3279 1.1 christos
3280 1.1 christos /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3281 1.1 christos asection *srelplt2;
3282 1.1 christos
3283 1.1 christos /* The .got.plt section (VxWorks only)*/
3284 1.1 christos asection *sgotplt;
3285 1.1 christos
3286 1.1 christos /* Shortcut to __tls_get_addr. */
3287 1.1 christos struct elf_link_hash_entry *tls_get_addr;
3288 1.1 christos
3289 1.1 christos /* The bfd that forced an old-style PLT. */
3290 1.1 christos bfd *old_bfd;
3291 1.1 christos
3292 1.1 christos /* TLS local dynamic got entry handling. */
3293 1.1 christos union {
3294 1.1 christos bfd_signed_vma refcount;
3295 1.1 christos bfd_vma offset;
3296 1.1 christos } tlsld_got;
3297 1.1 christos
3298 1.1 christos /* Offset of branch table to PltResolve function in glink. */
3299 1.1 christos bfd_vma glink_pltresolve;
3300 1.1 christos
3301 1.1 christos /* Size of reserved GOT entries. */
3302 1.1 christos unsigned int got_header_size;
3303 1.1 christos /* Non-zero if allocating the header left a gap. */
3304 1.1 christos unsigned int got_gap;
3305 1.1 christos
3306 1.1 christos /* The type of PLT we have chosen to use. */
3307 1.1 christos enum ppc_elf_plt_type plt_type;
3308 1.1 christos
3309 1.1 christos /* True if the target system is VxWorks. */
3310 1.1 christos unsigned int is_vxworks:1;
3311 1.1 christos
3312 1.1 christos /* The size of PLT entries. */
3313 1.1 christos int plt_entry_size;
3314 1.1 christos /* The distance between adjacent PLT slots. */
3315 1.1 christos int plt_slot_size;
3316 1.1 christos /* The size of the first PLT entry. */
3317 1.1 christos int plt_initial_entry_size;
3318 1.1 christos
3319 1.1 christos /* Small local sym cache. */
3320 1.1 christos struct sym_cache sym_cache;
3321 1.1 christos };
3322 1.1 christos
3323 1.1 christos /* Rename some of the generic section flags to better document how they
3324 1.1 christos are used for ppc32. The flags are only valid for ppc32 elf objects. */
3325 1.1 christos
3326 1.1 christos /* Nonzero if this section has TLS related relocations. */
3327 1.1 christos #define has_tls_reloc sec_flg0
3328 1.1 christos
3329 1.1 christos /* Nonzero if this section has a call to __tls_get_addr. */
3330 1.1 christos #define has_tls_get_addr_call sec_flg1
3331 1.1 christos
3332 1.1 christos /* Get the PPC ELF linker hash table from a link_info structure. */
3333 1.1 christos
3334 1.1 christos #define ppc_elf_hash_table(p) \
3335 1.1 christos (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3336 1.1 christos == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3337 1.1 christos
3338 1.1 christos /* Create an entry in a PPC ELF linker hash table. */
3339 1.1 christos
3340 1.1 christos static struct bfd_hash_entry *
3341 1.1 christos ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3342 1.1 christos struct bfd_hash_table *table,
3343 1.1 christos const char *string)
3344 1.1 christos {
3345 1.1 christos /* Allocate the structure if it has not already been allocated by a
3346 1.1 christos subclass. */
3347 1.1 christos if (entry == NULL)
3348 1.1 christos {
3349 1.1 christos entry = bfd_hash_allocate (table,
3350 1.1 christos sizeof (struct ppc_elf_link_hash_entry));
3351 1.1 christos if (entry == NULL)
3352 1.1 christos return entry;
3353 1.1 christos }
3354 1.1 christos
3355 1.1 christos /* Call the allocation method of the superclass. */
3356 1.1 christos entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3357 1.1 christos if (entry != NULL)
3358 1.1 christos {
3359 1.1 christos ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3360 1.1 christos ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3361 1.1 christos ppc_elf_hash_entry (entry)->tls_mask = 0;
3362 1.1 christos ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3363 1.1 christos }
3364 1.1 christos
3365 1.1 christos return entry;
3366 1.1 christos }
3367 1.1 christos
3368 1.6 christos /* Create a PPC ELF linker hash table. */
3369 1.6 christos
3370 1.1 christos static struct bfd_link_hash_table *
3371 1.1 christos ppc_elf_link_hash_table_create (bfd *abfd)
3372 1.1 christos {
3373 1.1 christos struct ppc_elf_link_hash_table *ret;
3374 1.1 christos static struct ppc_elf_params default_params
3375 1.1 christos = { PLT_OLD, 0, 1, 0, 0, 12, 0, 0 };
3376 1.1 christos
3377 1.1 christos ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3378 1.1 christos if (ret == NULL)
3379 1.1 christos return NULL;
3380 1.1 christos
3381 1.1 christos if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3382 1.1 christos ppc_elf_link_hash_newfunc,
3383 1.1 christos sizeof (struct ppc_elf_link_hash_entry),
3384 1.1 christos PPC32_ELF_DATA))
3385 1.1 christos {
3386 1.1 christos free (ret);
3387 1.1 christos return NULL;
3388 1.1 christos }
3389 1.3 christos
3390 1.3 christos ret->elf.init_plt_refcount.refcount = 0;
3391 1.1 christos ret->elf.init_plt_refcount.glist = NULL;
3392 1.1 christos ret->elf.init_plt_offset.offset = 0;
3393 1.1 christos ret->elf.init_plt_offset.glist = NULL;
3394 1.1 christos
3395 1.1 christos ret->params = &default_params;
3396 1.1 christos
3397 1.1 christos ret->sdata[0].name = ".sdata";
3398 1.1 christos ret->sdata[0].sym_name = "_SDA_BASE_";
3399 1.1 christos ret->sdata[0].bss_name = ".sbss";
3400 1.1 christos
3401 1.1 christos ret->sdata[1].name = ".sdata2";
3402 1.1 christos ret->sdata[1].sym_name = "_SDA2_BASE_";
3403 1.1 christos ret->sdata[1].bss_name = ".sbss2";
3404 1.1 christos
3405 1.1 christos ret->plt_entry_size = 12;
3406 1.3 christos ret->plt_slot_size = 8;
3407 1.3 christos ret->plt_initial_entry_size = 72;
3408 1.3 christos
3409 1.3 christos return &ret->elf.root;
3410 1.3 christos }
3411 1.3 christos
3412 1.3 christos /* Hook linker params into hash table. */
3413 1.3 christos
3414 1.3 christos void
3415 1.6 christos ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3416 1.3 christos {
3417 1.3 christos struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3418 1.1 christos
3419 1.1 christos if (htab)
3420 1.1 christos htab->params = params;
3421 1.1 christos params->pagesize_p2 = bfd_log2 (params->pagesize);
3422 1.1 christos }
3423 1.1 christos
3424 1.1 christos /* Create .got and the related sections. */
3425 1.1 christos
3426 1.1 christos static bfd_boolean
3427 1.1 christos ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3428 1.1 christos {
3429 1.1 christos struct ppc_elf_link_hash_table *htab;
3430 1.1 christos asection *s;
3431 1.1 christos flagword flags;
3432 1.1 christos
3433 1.1 christos if (!_bfd_elf_create_got_section (abfd, info))
3434 1.1 christos return FALSE;
3435 1.1 christos
3436 1.1 christos htab = ppc_elf_hash_table (info);
3437 1.1 christos htab->got = s = bfd_get_linker_section (abfd, ".got");
3438 1.1 christos if (s == NULL)
3439 1.1 christos abort ();
3440 1.1 christos
3441 1.1 christos if (htab->is_vxworks)
3442 1.1 christos {
3443 1.1 christos htab->sgotplt = bfd_get_linker_section (abfd, ".got.plt");
3444 1.1 christos if (!htab->sgotplt)
3445 1.1 christos abort ();
3446 1.1 christos }
3447 1.1 christos else
3448 1.1 christos {
3449 1.1 christos /* The powerpc .got has a blrl instruction in it. Mark it
3450 1.1 christos executable. */
3451 1.1 christos flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3452 1.1 christos | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3453 1.1 christos if (!bfd_set_section_flags (abfd, s, flags))
3454 1.1 christos return FALSE;
3455 1.1 christos }
3456 1.1 christos
3457 1.1 christos htab->relgot = bfd_get_linker_section (abfd, ".rela.got");
3458 1.3 christos if (!htab->relgot)
3459 1.3 christos abort ();
3460 1.3 christos
3461 1.3 christos return TRUE;
3462 1.3 christos }
3463 1.3 christos
3464 1.3 christos /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3465 1.3 christos R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3466 1.3 christos and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3467 1.3 christos
3468 1.3 christos static bfd_boolean
3469 1.3 christos ppc_elf_create_linker_section (bfd *abfd,
3470 1.3 christos struct bfd_link_info *info,
3471 1.3 christos flagword flags,
3472 1.3 christos elf_linker_section_t *lsect)
3473 1.3 christos {
3474 1.3 christos asection *s;
3475 1.3 christos
3476 1.3 christos flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3477 1.3 christos | SEC_LINKER_CREATED);
3478 1.3 christos
3479 1.3 christos s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3480 1.3 christos if (s == NULL)
3481 1.3 christos return FALSE;
3482 1.3 christos lsect->section = s;
3483 1.3 christos
3484 1.3 christos /* Define the sym on the first section of this name. */
3485 1.3 christos s = bfd_get_section_by_name (abfd, lsect->name);
3486 1.3 christos
3487 1.3 christos lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3488 1.1 christos if (lsect->sym == NULL)
3489 1.1 christos return FALSE;
3490 1.1 christos lsect->sym->root.u.def.value = 0x8000;
3491 1.1 christos return TRUE;
3492 1.1 christos }
3493 1.1 christos
3494 1.1 christos static bfd_boolean
3495 1.1 christos ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3496 1.1 christos {
3497 1.1 christos struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3498 1.1 christos asection *s;
3499 1.1 christos flagword flags;
3500 1.3 christos
3501 1.3 christos flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3502 1.1 christos | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3503 1.1 christos s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3504 1.1 christos htab->glink = s;
3505 1.1 christos if (s == NULL
3506 1.1 christos || !bfd_set_section_alignment (abfd, s,
3507 1.1 christos htab->params->ppc476_workaround ? 6 : 4))
3508 1.1 christos return FALSE;
3509 1.1 christos
3510 1.1 christos if (!info->no_ld_generated_unwind_info)
3511 1.1 christos {
3512 1.1 christos flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3513 1.1 christos | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3514 1.1 christos s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3515 1.1 christos htab->glink_eh_frame = s;
3516 1.1 christos if (s == NULL
3517 1.1 christos || !bfd_set_section_alignment (abfd, s, 2))
3518 1.1 christos return FALSE;
3519 1.1 christos }
3520 1.1 christos
3521 1.1 christos flags = SEC_ALLOC | SEC_LINKER_CREATED;
3522 1.1 christos s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3523 1.1 christos htab->iplt = s;
3524 1.1 christos if (s == NULL
3525 1.1 christos || !bfd_set_section_alignment (abfd, s, 4))
3526 1.1 christos return FALSE;
3527 1.1 christos
3528 1.1 christos flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3529 1.3 christos | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3530 1.3 christos s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3531 1.3 christos htab->reliplt = s;
3532 1.3 christos if (s == NULL
3533 1.3 christos || ! bfd_set_section_alignment (abfd, s, 2))
3534 1.3 christos return FALSE;
3535 1.3 christos
3536 1.3 christos if (!ppc_elf_create_linker_section (abfd, info, 0,
3537 1.3 christos &htab->sdata[0]))
3538 1.1 christos return FALSE;
3539 1.1 christos
3540 1.1 christos if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3541 1.1 christos &htab->sdata[1]))
3542 1.1 christos return FALSE;
3543 1.1 christos
3544 1.1 christos return TRUE;
3545 1.1 christos }
3546 1.1 christos
3547 1.1 christos /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3548 1.1 christos to output sections (just like _bfd_elf_create_dynamic_sections has
3549 1.1 christos to create .dynbss and .rela.bss). */
3550 1.1 christos
3551 1.1 christos static bfd_boolean
3552 1.1 christos ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3553 1.1 christos {
3554 1.1 christos struct ppc_elf_link_hash_table *htab;
3555 1.1 christos asection *s;
3556 1.1 christos flagword flags;
3557 1.1 christos
3558 1.1 christos htab = ppc_elf_hash_table (info);
3559 1.1 christos
3560 1.1 christos if (htab->got == NULL
3561 1.1 christos && !ppc_elf_create_got (abfd, info))
3562 1.1 christos return FALSE;
3563 1.1 christos
3564 1.1 christos if (!_bfd_elf_create_dynamic_sections (abfd, info))
3565 1.1 christos return FALSE;
3566 1.1 christos
3567 1.1 christos if (htab->glink == NULL
3568 1.1 christos && !ppc_elf_create_glink (abfd, info))
3569 1.1 christos return FALSE;
3570 1.1 christos
3571 1.1 christos htab->dynbss = bfd_get_linker_section (abfd, ".dynbss");
3572 1.6 christos s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3573 1.1 christos SEC_ALLOC | SEC_LINKER_CREATED);
3574 1.1 christos htab->dynsbss = s;
3575 1.1 christos if (s == NULL)
3576 1.1 christos return FALSE;
3577 1.1 christos
3578 1.1 christos if (! bfd_link_pic (info))
3579 1.1 christos {
3580 1.1 christos htab->relbss = bfd_get_linker_section (abfd, ".rela.bss");
3581 1.1 christos flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3582 1.1 christos | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3583 1.1 christos s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3584 1.1 christos htab->relsbss = s;
3585 1.1 christos if (s == NULL
3586 1.1 christos || ! bfd_set_section_alignment (abfd, s, 2))
3587 1.1 christos return FALSE;
3588 1.1 christos }
3589 1.1 christos
3590 1.1 christos if (htab->is_vxworks
3591 1.1 christos && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3592 1.1 christos return FALSE;
3593 1.1 christos
3594 1.1 christos htab->relplt = bfd_get_linker_section (abfd, ".rela.plt");
3595 1.1 christos htab->plt = s = bfd_get_linker_section (abfd, ".plt");
3596 1.1 christos if (s == NULL)
3597 1.1 christos abort ();
3598 1.1 christos
3599 1.1 christos flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3600 1.1 christos if (htab->plt_type == PLT_VXWORKS)
3601 1.1 christos /* The VxWorks PLT is a loaded section with contents. */
3602 1.1 christos flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3603 1.1 christos return bfd_set_section_flags (abfd, s, flags);
3604 1.1 christos }
3605 1.1 christos
3606 1.1 christos /* Copy the extra info we tack onto an elf_link_hash_entry. */
3607 1.1 christos
3608 1.1 christos static void
3609 1.1 christos ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3610 1.1 christos struct elf_link_hash_entry *dir,
3611 1.1 christos struct elf_link_hash_entry *ind)
3612 1.1 christos {
3613 1.1 christos struct ppc_elf_link_hash_entry *edir, *eind;
3614 1.1 christos
3615 1.1 christos edir = (struct ppc_elf_link_hash_entry *) dir;
3616 1.1 christos eind = (struct ppc_elf_link_hash_entry *) ind;
3617 1.1 christos
3618 1.1 christos edir->tls_mask |= eind->tls_mask;
3619 1.1 christos edir->has_sda_refs |= eind->has_sda_refs;
3620 1.1 christos
3621 1.1 christos /* If called to transfer flags for a weakdef during processing
3622 1.1 christos of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3623 1.1 christos We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3624 1.1 christos if (!(ELIMINATE_COPY_RELOCS
3625 1.1 christos && eind->elf.root.type != bfd_link_hash_indirect
3626 1.1 christos && edir->elf.dynamic_adjusted))
3627 1.1 christos edir->elf.non_got_ref |= eind->elf.non_got_ref;
3628 1.1 christos
3629 1.1 christos edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3630 1.1 christos edir->elf.ref_regular |= eind->elf.ref_regular;
3631 1.1 christos edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3632 1.1 christos edir->elf.needs_plt |= eind->elf.needs_plt;
3633 1.1 christos edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3634 1.1 christos
3635 1.1 christos if (eind->dyn_relocs != NULL)
3636 1.1 christos {
3637 1.1 christos if (edir->dyn_relocs != NULL)
3638 1.1 christos {
3639 1.1 christos struct elf_dyn_relocs **pp;
3640 1.1 christos struct elf_dyn_relocs *p;
3641 1.1 christos
3642 1.1 christos /* Add reloc counts against the indirect sym to the direct sym
3643 1.1 christos list. Merge any entries against the same section. */
3644 1.1 christos for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3645 1.1 christos {
3646 1.1 christos struct elf_dyn_relocs *q;
3647 1.1 christos
3648 1.1 christos for (q = edir->dyn_relocs; q != NULL; q = q->next)
3649 1.1 christos if (q->sec == p->sec)
3650 1.1 christos {
3651 1.1 christos q->pc_count += p->pc_count;
3652 1.1 christos q->count += p->count;
3653 1.1 christos *pp = p->next;
3654 1.1 christos break;
3655 1.1 christos }
3656 1.1 christos if (q == NULL)
3657 1.1 christos pp = &p->next;
3658 1.1 christos }
3659 1.1 christos *pp = edir->dyn_relocs;
3660 1.1 christos }
3661 1.1 christos
3662 1.1 christos edir->dyn_relocs = eind->dyn_relocs;
3663 1.1 christos eind->dyn_relocs = NULL;
3664 1.1 christos }
3665 1.1 christos
3666 1.1 christos /* If we were called to copy over info for a weak sym, that's all.
3667 1.1 christos You might think dyn_relocs need not be copied over; After all,
3668 1.1 christos both syms will be dynamic or both non-dynamic so we're just
3669 1.1 christos moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3670 1.1 christos code in ppc_elf_adjust_dynamic_symbol needs to check for
3671 1.1 christos dyn_relocs in read-only sections, and it does so on what is the
3672 1.1 christos DIR sym here. */
3673 1.1 christos if (eind->elf.root.type != bfd_link_hash_indirect)
3674 1.1 christos return;
3675 1.1 christos
3676 1.1 christos /* Copy over the GOT refcount entries that we may have already seen to
3677 1.1 christos the symbol which just became indirect. */
3678 1.1 christos edir->elf.got.refcount += eind->elf.got.refcount;
3679 1.1 christos eind->elf.got.refcount = 0;
3680 1.1 christos
3681 1.1 christos /* And plt entries. */
3682 1.1 christos if (eind->elf.plt.plist != NULL)
3683 1.1 christos {
3684 1.1 christos if (edir->elf.plt.plist != NULL)
3685 1.1 christos {
3686 1.1 christos struct plt_entry **entp;
3687 1.1 christos struct plt_entry *ent;
3688 1.1 christos
3689 1.1 christos for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3690 1.1 christos {
3691 1.1 christos struct plt_entry *dent;
3692 1.1 christos
3693 1.1 christos for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3694 1.1 christos if (dent->sec == ent->sec && dent->addend == ent->addend)
3695 1.1 christos {
3696 1.1 christos dent->plt.refcount += ent->plt.refcount;
3697 1.1 christos *entp = ent->next;
3698 1.1 christos break;
3699 1.1 christos }
3700 1.1 christos if (dent == NULL)
3701 1.1 christos entp = &ent->next;
3702 1.1 christos }
3703 1.1 christos *entp = edir->elf.plt.plist;
3704 1.1 christos }
3705 1.1 christos
3706 1.1 christos edir->elf.plt.plist = eind->elf.plt.plist;
3707 1.1 christos eind->elf.plt.plist = NULL;
3708 1.1 christos }
3709 1.1 christos
3710 1.1 christos if (eind->elf.dynindx != -1)
3711 1.1 christos {
3712 1.1 christos if (edir->elf.dynindx != -1)
3713 1.1 christos _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3714 1.1 christos edir->elf.dynstr_index);
3715 1.1 christos edir->elf.dynindx = eind->elf.dynindx;
3716 1.1 christos edir->elf.dynstr_index = eind->elf.dynstr_index;
3717 1.1 christos eind->elf.dynindx = -1;
3718 1.1 christos eind->elf.dynstr_index = 0;
3719 1.1 christos }
3720 1.1 christos }
3721 1.1 christos
3722 1.1 christos /* Hook called by the linker routine which adds symbols from an object
3723 1.1 christos file. We use it to put .comm items in .sbss, and not .bss. */
3724 1.1 christos
3725 1.1 christos static bfd_boolean
3726 1.1 christos ppc_elf_add_symbol_hook (bfd *abfd,
3727 1.1 christos struct bfd_link_info *info,
3728 1.1 christos Elf_Internal_Sym *sym,
3729 1.6 christos const char **namep ATTRIBUTE_UNUSED,
3730 1.1 christos flagword *flagsp ATTRIBUTE_UNUSED,
3731 1.1 christos asection **secp,
3732 1.1 christos bfd_vma *valp)
3733 1.1 christos {
3734 1.1 christos if (sym->st_shndx == SHN_COMMON
3735 1.1 christos && !bfd_link_relocatable (info)
3736 1.1 christos && is_ppc_elf (info->output_bfd)
3737 1.1 christos && sym->st_size <= elf_gp_size (abfd))
3738 1.1 christos {
3739 1.1 christos /* Common symbols less than or equal to -G nn bytes are automatically
3740 1.1 christos put into .sbss. */
3741 1.1 christos struct ppc_elf_link_hash_table *htab;
3742 1.1 christos
3743 1.1 christos htab = ppc_elf_hash_table (info);
3744 1.1 christos if (htab->sbss == NULL)
3745 1.1 christos {
3746 1.1 christos flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3747 1.1 christos
3748 1.1 christos if (!htab->elf.dynobj)
3749 1.1 christos htab->elf.dynobj = abfd;
3750 1.1 christos
3751 1.1 christos htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3752 1.1 christos ".sbss",
3753 1.1 christos flags);
3754 1.1 christos if (htab->sbss == NULL)
3755 1.1 christos return FALSE;
3756 1.6 christos }
3757 1.3 christos
3758 1.3 christos *secp = htab->sbss;
3759 1.6 christos *valp = sym->st_size;
3760 1.1 christos }
3761 1.1 christos
3762 1.1 christos if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3763 1.1 christos && (abfd->flags & DYNAMIC) == 0
3764 1.1 christos && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
3765 1.1 christos elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
3766 1.1 christos
3767 1.1 christos return TRUE;
3768 1.1 christos }
3769 1.1 christos
3770 1.1 christos /* Find a linker generated pointer with a given addend and type. */
3772 1.1 christos
3773 1.1 christos static elf_linker_section_pointers_t *
3774 1.1 christos elf_find_pointer_linker_section
3775 1.1 christos (elf_linker_section_pointers_t *linker_pointers,
3776 1.1 christos bfd_vma addend,
3777 1.1 christos elf_linker_section_t *lsect)
3778 1.1 christos {
3779 1.1 christos for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3780 1.1 christos if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3781 1.1 christos return linker_pointers;
3782 1.3 christos
3783 1.3 christos return NULL;
3784 1.3 christos }
3785 1.3 christos
3786 1.1 christos /* Allocate a pointer to live in a linker created section. */
3787 1.1 christos
3788 1.1 christos static bfd_boolean
3789 1.1 christos elf_allocate_pointer_linker_section (bfd *abfd,
3790 1.1 christos elf_linker_section_t *lsect,
3791 1.1 christos struct elf_link_hash_entry *h,
3792 1.1 christos const Elf_Internal_Rela *rel)
3793 1.1 christos {
3794 1.1 christos elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3795 1.1 christos elf_linker_section_pointers_t *linker_section_ptr;
3796 1.1 christos unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3797 1.1 christos bfd_size_type amt;
3798 1.1 christos
3799 1.1 christos BFD_ASSERT (lsect != NULL);
3800 1.1 christos
3801 1.1 christos /* Is this a global symbol? */
3802 1.1 christos if (h != NULL)
3803 1.1 christos {
3804 1.1 christos struct ppc_elf_link_hash_entry *eh;
3805 1.1 christos
3806 1.1 christos /* Has this symbol already been allocated? If so, our work is done. */
3807 1.1 christos eh = (struct ppc_elf_link_hash_entry *) h;
3808 1.1 christos if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3809 1.1 christos rel->r_addend,
3810 1.1 christos lsect))
3811 1.1 christos return TRUE;
3812 1.1 christos
3813 1.1 christos ptr_linker_section_ptr = &eh->linker_section_pointer;
3814 1.1 christos }
3815 1.1 christos else
3816 1.1 christos {
3817 1.1 christos BFD_ASSERT (is_ppc_elf (abfd));
3818 1.1 christos
3819 1.1 christos /* Allocation of a pointer to a local symbol. */
3820 1.1 christos elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3821 1.1 christos
3822 1.1 christos /* Allocate a table to hold the local symbols if first time. */
3823 1.1 christos if (!ptr)
3824 1.1 christos {
3825 1.1 christos unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3826 1.1 christos
3827 1.1 christos amt = num_symbols;
3828 1.1 christos amt *= sizeof (elf_linker_section_pointers_t *);
3829 1.1 christos ptr = bfd_zalloc (abfd, amt);
3830 1.1 christos
3831 1.1 christos if (!ptr)
3832 1.1 christos return FALSE;
3833 1.1 christos
3834 1.1 christos elf_local_ptr_offsets (abfd) = ptr;
3835 1.1 christos }
3836 1.1 christos
3837 1.1 christos /* Has this symbol already been allocated? If so, our work is done. */
3838 1.1 christos if (elf_find_pointer_linker_section (ptr[r_symndx],
3839 1.1 christos rel->r_addend,
3840 1.1 christos lsect))
3841 1.1 christos return TRUE;
3842 1.1 christos
3843 1.1 christos ptr_linker_section_ptr = &ptr[r_symndx];
3844 1.1 christos }
3845 1.1 christos
3846 1.1 christos /* Allocate space for a pointer in the linker section, and allocate
3847 1.1 christos a new pointer record from internal memory. */
3848 1.1 christos BFD_ASSERT (ptr_linker_section_ptr != NULL);
3849 1.1 christos amt = sizeof (elf_linker_section_pointers_t);
3850 1.1 christos linker_section_ptr = bfd_alloc (abfd, amt);
3851 1.1 christos
3852 1.1 christos if (!linker_section_ptr)
3853 1.3 christos return FALSE;
3854 1.3 christos
3855 1.1 christos linker_section_ptr->next = *ptr_linker_section_ptr;
3856 1.1 christos linker_section_ptr->addend = rel->r_addend;
3857 1.1 christos linker_section_ptr->lsect = lsect;
3858 1.1 christos *ptr_linker_section_ptr = linker_section_ptr;
3859 1.1 christos
3860 1.1 christos if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3861 1.1 christos return FALSE;
3862 1.1 christos linker_section_ptr->offset = lsect->section->size;
3863 1.1 christos lsect->section->size += 4;
3864 1.1 christos
3865 1.1 christos #ifdef DEBUG
3866 1.1 christos fprintf (stderr,
3867 1.1 christos "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3868 1.1 christos lsect->name, (long) linker_section_ptr->offset,
3869 1.1 christos (long) lsect->section->size);
3870 1.1 christos #endif
3871 1.1 christos
3872 1.1 christos return TRUE;
3873 1.1 christos }
3874 1.1 christos
3875 1.1 christos static struct plt_entry **
3876 1.1 christos update_local_sym_info (bfd *abfd,
3877 1.1 christos Elf_Internal_Shdr *symtab_hdr,
3878 1.1 christos unsigned long r_symndx,
3879 1.1 christos int tls_type)
3880 1.1 christos {
3881 1.1 christos bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3882 1.1 christos struct plt_entry **local_plt;
3883 1.1 christos char *local_got_tls_masks;
3884 1.1 christos
3885 1.1 christos if (local_got_refcounts == NULL)
3886 1.1 christos {
3887 1.1 christos bfd_size_type size = symtab_hdr->sh_info;
3888 1.1 christos
3889 1.1 christos size *= (sizeof (*local_got_refcounts)
3890 1.1 christos + sizeof (*local_plt)
3891 1.1 christos + sizeof (*local_got_tls_masks));
3892 1.1 christos local_got_refcounts = bfd_zalloc (abfd, size);
3893 1.1 christos if (local_got_refcounts == NULL)
3894 1.1 christos return NULL;
3895 1.1 christos elf_local_got_refcounts (abfd) = local_got_refcounts;
3896 1.1 christos }
3897 1.1 christos
3898 1.1 christos local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3899 1.1 christos local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3900 1.1 christos local_got_tls_masks[r_symndx] |= tls_type;
3901 1.1 christos if (tls_type != PLT_IFUNC)
3902 1.1 christos local_got_refcounts[r_symndx] += 1;
3903 1.1 christos return local_plt + r_symndx;
3904 1.1 christos }
3905 1.1 christos
3906 1.1 christos static bfd_boolean
3907 1.1 christos update_plt_info (bfd *abfd, struct plt_entry **plist,
3908 1.1 christos asection *sec, bfd_vma addend)
3909 1.1 christos {
3910 1.1 christos struct plt_entry *ent;
3911 1.1 christos
3912 1.1 christos if (addend < 32768)
3913 1.1 christos sec = NULL;
3914 1.1 christos for (ent = *plist; ent != NULL; ent = ent->next)
3915 1.1 christos if (ent->sec == sec && ent->addend == addend)
3916 1.1 christos break;
3917 1.1 christos if (ent == NULL)
3918 1.1 christos {
3919 1.1 christos bfd_size_type amt = sizeof (*ent);
3920 1.1 christos ent = bfd_alloc (abfd, amt);
3921 1.1 christos if (ent == NULL)
3922 1.1 christos return FALSE;
3923 1.1 christos ent->next = *plist;
3924 1.1 christos ent->sec = sec;
3925 1.1 christos ent->addend = addend;
3926 1.1 christos ent->plt.refcount = 0;
3927 1.1 christos *plist = ent;
3928 1.1 christos }
3929 1.1 christos ent->plt.refcount += 1;
3930 1.1 christos return TRUE;
3931 1.1 christos }
3932 1.1 christos
3933 1.1 christos static struct plt_entry *
3934 1.1 christos find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3935 1.1 christos {
3936 1.1 christos struct plt_entry *ent;
3937 1.1 christos
3938 1.1 christos if (addend < 32768)
3939 1.1 christos sec = NULL;
3940 1.1 christos for (ent = *plist; ent != NULL; ent = ent->next)
3941 1.1 christos if (ent->sec == sec && ent->addend == addend)
3942 1.1 christos break;
3943 1.1 christos return ent;
3944 1.1 christos }
3945 1.1 christos
3946 1.1 christos static bfd_boolean
3947 1.1 christos is_branch_reloc (enum elf_ppc_reloc_type r_type)
3948 1.1 christos {
3949 1.1 christos return (r_type == R_PPC_PLTREL24
3950 1.1 christos || r_type == R_PPC_LOCAL24PC
3951 1.1 christos || r_type == R_PPC_REL24
3952 1.1 christos || r_type == R_PPC_REL14
3953 1.1 christos || r_type == R_PPC_REL14_BRTAKEN
3954 1.1 christos || r_type == R_PPC_REL14_BRNTAKEN
3955 1.1 christos || r_type == R_PPC_ADDR24
3956 1.1 christos || r_type == R_PPC_ADDR14
3957 1.1 christos || r_type == R_PPC_ADDR14_BRTAKEN
3958 1.1 christos || r_type == R_PPC_ADDR14_BRNTAKEN);
3959 1.1 christos }
3960 1.1 christos
3961 1.1 christos static void
3962 1.1 christos bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3963 1.1 christos {
3964 1.1 christos (*_bfd_error_handler)
3965 1.1 christos (_("%B: relocation %s cannot be used when making a shared object"),
3966 1.1 christos abfd,
3967 1.1 christos ppc_elf_howto_table[r_type]->name);
3968 1.1 christos bfd_set_error (bfd_error_bad_value);
3969 1.1 christos }
3970 1.1 christos
3971 1.1 christos /* Look through the relocs for a section during the first phase, and
3972 1.1 christos allocate space in the global offset table or procedure linkage
3973 1.1 christos table. */
3974 1.1 christos
3975 1.1 christos static bfd_boolean
3976 1.1 christos ppc_elf_check_relocs (bfd *abfd,
3977 1.1 christos struct bfd_link_info *info,
3978 1.1 christos asection *sec,
3979 1.1 christos const Elf_Internal_Rela *relocs)
3980 1.1 christos {
3981 1.1 christos struct ppc_elf_link_hash_table *htab;
3982 1.6 christos Elf_Internal_Shdr *symtab_hdr;
3983 1.1 christos struct elf_link_hash_entry **sym_hashes;
3984 1.1 christos const Elf_Internal_Rela *rel;
3985 1.1 christos const Elf_Internal_Rela *rel_end;
3986 1.1 christos asection *got2, *sreloc;
3987 1.1 christos struct elf_link_hash_entry *tga;
3988 1.1 christos
3989 1.1 christos if (bfd_link_relocatable (info))
3990 1.1 christos return TRUE;
3991 1.1 christos
3992 1.1 christos /* Don't do anything special with non-loaded, non-alloced sections.
3993 1.1 christos In particular, any relocs in such sections should not affect GOT
3994 1.1 christos and PLT reference counting (ie. we don't allow them to create GOT
3995 1.1 christos or PLT entries), there's no possibility or desire to optimize TLS
3996 1.1 christos relocs, and there's not much point in propagating relocs to shared
3997 1.1 christos libs that the dynamic linker won't relocate. */
3998 1.1 christos if ((sec->flags & SEC_ALLOC) == 0)
3999 1.1 christos return TRUE;
4000 1.1 christos
4001 1.1 christos #ifdef DEBUG
4002 1.1 christos _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
4003 1.1 christos sec, abfd);
4004 1.1 christos #endif
4005 1.1 christos
4006 1.1 christos BFD_ASSERT (is_ppc_elf (abfd));
4007 1.1 christos
4008 1.1 christos /* Initialize howto table if not already done. */
4009 1.1 christos if (!ppc_elf_howto_table[R_PPC_ADDR32])
4010 1.1 christos ppc_elf_howto_init ();
4011 1.1 christos
4012 1.1 christos htab = ppc_elf_hash_table (info);
4013 1.1 christos if (htab->glink == NULL)
4014 1.1 christos {
4015 1.1 christos if (htab->elf.dynobj == NULL)
4016 1.1 christos htab->elf.dynobj = abfd;
4017 1.1 christos if (!ppc_elf_create_glink (htab->elf.dynobj, info))
4018 1.1 christos return FALSE;
4019 1.1 christos }
4020 1.1 christos tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4021 1.1 christos FALSE, FALSE, TRUE);
4022 1.1 christos symtab_hdr = &elf_symtab_hdr (abfd);
4023 1.1 christos sym_hashes = elf_sym_hashes (abfd);
4024 1.1 christos got2 = bfd_get_section_by_name (abfd, ".got2");
4025 1.1 christos sreloc = NULL;
4026 1.1 christos
4027 1.6 christos rel_end = relocs + sec->reloc_count;
4028 1.1 christos for (rel = relocs; rel < rel_end; rel++)
4029 1.1 christos {
4030 1.1 christos unsigned long r_symndx;
4031 1.1 christos enum elf_ppc_reloc_type r_type;
4032 1.1 christos struct elf_link_hash_entry *h;
4033 1.1 christos int tls_type;
4034 1.1 christos struct plt_entry **ifunc;
4035 1.1 christos
4036 1.1 christos r_symndx = ELF32_R_SYM (rel->r_info);
4037 1.1 christos if (r_symndx < symtab_hdr->sh_info)
4038 1.1 christos h = NULL;
4039 1.1 christos else
4040 1.1 christos {
4041 1.1 christos h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4042 1.1 christos while (h->root.type == bfd_link_hash_indirect
4043 1.1 christos || h->root.type == bfd_link_hash_warning)
4044 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
4045 1.1 christos
4046 1.1 christos /* PR15323, ref flags aren't set for references in the same
4047 1.1 christos object. */
4048 1.1 christos h->root.non_ir_ref = 1;
4049 1.1 christos }
4050 1.1 christos
4051 1.1 christos /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4052 1.1 christos This shows up in particular in an R_PPC_ADDR32 in the eabi
4053 1.1 christos startup code. */
4054 1.1 christos if (h != NULL
4055 1.1 christos && htab->got == NULL
4056 1.1 christos && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
4057 1.1 christos {
4058 1.1 christos if (htab->elf.dynobj == NULL)
4059 1.1 christos htab->elf.dynobj = abfd;
4060 1.6 christos if (!ppc_elf_create_got (htab->elf.dynobj, info))
4061 1.1 christos return FALSE;
4062 1.1 christos BFD_ASSERT (h == htab->elf.hgot);
4063 1.1 christos }
4064 1.1 christos
4065 1.1 christos tls_type = 0;
4066 1.1 christos r_type = ELF32_R_TYPE (rel->r_info);
4067 1.1 christos ifunc = NULL;
4068 1.1 christos if (h == NULL && !htab->is_vxworks)
4069 1.1 christos {
4070 1.1 christos Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4071 1.1 christos abfd, r_symndx);
4072 1.1 christos if (isym == NULL)
4073 1.1 christos return FALSE;
4074 1.1 christos
4075 1.1 christos if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4076 1.1 christos {
4077 1.1 christos /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4078 1.1 christos ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4079 1.6 christos PLT_IFUNC);
4080 1.1 christos if (ifunc == NULL)
4081 1.1 christos return FALSE;
4082 1.1 christos
4083 1.1 christos /* STT_GNU_IFUNC symbols must have a PLT entry;
4084 1.1 christos In a non-pie executable even when there are
4085 1.1 christos no plt calls. */
4086 1.6 christos if (!bfd_link_pic (info)
4087 1.1 christos || is_branch_reloc (r_type))
4088 1.1 christos {
4089 1.1 christos bfd_vma addend = 0;
4090 1.1 christos if (r_type == R_PPC_PLTREL24)
4091 1.1 christos {
4092 1.1 christos ppc_elf_tdata (abfd)->makes_plt_call = 1;
4093 1.1 christos if (bfd_link_pic (info))
4094 1.1 christos addend = rel->r_addend;
4095 1.1 christos }
4096 1.1 christos if (!update_plt_info (abfd, ifunc, got2, addend))
4097 1.1 christos return FALSE;
4098 1.1 christos }
4099 1.1 christos }
4100 1.1 christos }
4101 1.1 christos
4102 1.1 christos if (!htab->is_vxworks
4103 1.1 christos && is_branch_reloc (r_type)
4104 1.1 christos && h != NULL
4105 1.1 christos && h == tga)
4106 1.1 christos {
4107 1.1 christos if (rel != relocs
4108 1.1 christos && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
4109 1.1 christos || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
4110 1.1 christos /* We have a new-style __tls_get_addr call with a marker
4111 1.1 christos reloc. */
4112 1.1 christos ;
4113 1.1 christos else
4114 1.1 christos /* Mark this section as having an old-style call. */
4115 1.1 christos sec->has_tls_get_addr_call = 1;
4116 1.1 christos }
4117 1.1 christos
4118 1.1 christos switch (r_type)
4119 1.1 christos {
4120 1.1 christos case R_PPC_TLSGD:
4121 1.1 christos case R_PPC_TLSLD:
4122 1.1 christos /* These special tls relocs tie a call to __tls_get_addr with
4123 1.1 christos its parameter symbol. */
4124 1.1 christos break;
4125 1.1 christos
4126 1.1 christos case R_PPC_GOT_TLSLD16:
4127 1.1 christos case R_PPC_GOT_TLSLD16_LO:
4128 1.1 christos case R_PPC_GOT_TLSLD16_HI:
4129 1.1 christos case R_PPC_GOT_TLSLD16_HA:
4130 1.1 christos tls_type = TLS_TLS | TLS_LD;
4131 1.1 christos goto dogottls;
4132 1.1 christos
4133 1.1 christos case R_PPC_GOT_TLSGD16:
4134 1.1 christos case R_PPC_GOT_TLSGD16_LO:
4135 1.1 christos case R_PPC_GOT_TLSGD16_HI:
4136 1.1 christos case R_PPC_GOT_TLSGD16_HA:
4137 1.6 christos tls_type = TLS_TLS | TLS_GD;
4138 1.1 christos goto dogottls;
4139 1.1 christos
4140 1.1 christos case R_PPC_GOT_TPREL16:
4141 1.1 christos case R_PPC_GOT_TPREL16_LO:
4142 1.1 christos case R_PPC_GOT_TPREL16_HI:
4143 1.1 christos case R_PPC_GOT_TPREL16_HA:
4144 1.1 christos if (bfd_link_pic (info))
4145 1.1 christos info->flags |= DF_STATIC_TLS;
4146 1.1 christos tls_type = TLS_TLS | TLS_TPREL;
4147 1.1 christos goto dogottls;
4148 1.1 christos
4149 1.1 christos case R_PPC_GOT_DTPREL16:
4150 1.1 christos case R_PPC_GOT_DTPREL16_LO:
4151 1.1 christos case R_PPC_GOT_DTPREL16_HI:
4152 1.1 christos case R_PPC_GOT_DTPREL16_HA:
4153 1.1 christos tls_type = TLS_TLS | TLS_DTPREL;
4154 1.1 christos dogottls:
4155 1.1 christos sec->has_tls_reloc = 1;
4156 1.1 christos /* Fall thru */
4157 1.1 christos
4158 1.1 christos /* GOT16 relocations */
4159 1.1 christos case R_PPC_GOT16:
4160 1.1 christos case R_PPC_GOT16_LO:
4161 1.1 christos case R_PPC_GOT16_HI:
4162 1.1 christos case R_PPC_GOT16_HA:
4163 1.1 christos /* This symbol requires a global offset table entry. */
4164 1.1 christos if (htab->got == NULL)
4165 1.1 christos {
4166 1.1 christos if (htab->elf.dynobj == NULL)
4167 1.1 christos htab->elf.dynobj = abfd;
4168 1.1 christos if (!ppc_elf_create_got (htab->elf.dynobj, info))
4169 1.1 christos return FALSE;
4170 1.1 christos }
4171 1.1 christos if (h != NULL)
4172 1.1 christos {
4173 1.1 christos h->got.refcount += 1;
4174 1.1 christos ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4175 1.1 christos }
4176 1.6 christos else
4177 1.1 christos /* This is a global offset table entry for a local symbol. */
4178 1.1 christos if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4179 1.1 christos return FALSE;
4180 1.1 christos
4181 1.1 christos /* We may also need a plt entry if the symbol turns out to be
4182 1.1 christos an ifunc. */
4183 1.1 christos if (h != NULL && !bfd_link_pic (info))
4184 1.1 christos {
4185 1.6 christos if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4186 1.1 christos return FALSE;
4187 1.1 christos }
4188 1.1 christos break;
4189 1.1 christos
4190 1.3 christos /* Indirect .sdata relocation. */
4191 1.3 christos case R_PPC_EMB_SDAI16:
4192 1.3 christos if (bfd_link_pic (info))
4193 1.1 christos {
4194 1.1 christos bad_shared_reloc (abfd, r_type);
4195 1.1 christos return FALSE;
4196 1.1 christos }
4197 1.1 christos htab->sdata[0].sym->ref_regular = 1;
4198 1.1 christos if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4199 1.1 christos h, rel))
4200 1.1 christos return FALSE;
4201 1.1 christos if (h != NULL)
4202 1.1 christos {
4203 1.6 christos ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4204 1.1 christos h->non_got_ref = TRUE;
4205 1.1 christos }
4206 1.1 christos break;
4207 1.1 christos
4208 1.3 christos /* Indirect .sdata2 relocation. */
4209 1.3 christos case R_PPC_EMB_SDA2I16:
4210 1.3 christos if (bfd_link_pic (info))
4211 1.1 christos {
4212 1.1 christos bad_shared_reloc (abfd, r_type);
4213 1.1 christos return FALSE;
4214 1.1 christos }
4215 1.1 christos htab->sdata[1].sym->ref_regular = 1;
4216 1.1 christos if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4217 1.1 christos h, rel))
4218 1.1 christos return FALSE;
4219 1.3 christos if (h != NULL)
4220 1.3 christos {
4221 1.3 christos ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4222 1.3 christos h->non_got_ref = TRUE;
4223 1.1 christos }
4224 1.1 christos break;
4225 1.1 christos
4226 1.1 christos case R_PPC_SDAREL16:
4227 1.1 christos htab->sdata[0].sym->ref_regular = 1;
4228 1.1 christos /* Fall thru */
4229 1.1 christos
4230 1.1 christos case R_PPC_VLE_SDAREL_LO16A:
4231 1.1 christos case R_PPC_VLE_SDAREL_LO16D:
4232 1.1 christos case R_PPC_VLE_SDAREL_HI16A:
4233 1.1 christos case R_PPC_VLE_SDAREL_HI16D:
4234 1.1 christos case R_PPC_VLE_SDAREL_HA16A:
4235 1.1 christos case R_PPC_VLE_SDAREL_HA16D:
4236 1.1 christos if (h != NULL)
4237 1.1 christos {
4238 1.1 christos ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4239 1.1 christos h->non_got_ref = TRUE;
4240 1.1 christos }
4241 1.1 christos break;
4242 1.1 christos
4243 1.1 christos case R_PPC_VLE_REL8:
4244 1.1 christos case R_PPC_VLE_REL15:
4245 1.1 christos case R_PPC_VLE_REL24:
4246 1.1 christos case R_PPC_VLE_LO16A:
4247 1.1 christos case R_PPC_VLE_LO16D:
4248 1.6 christos case R_PPC_VLE_HI16A:
4249 1.1 christos case R_PPC_VLE_HI16D:
4250 1.1 christos case R_PPC_VLE_HA16A:
4251 1.1 christos case R_PPC_VLE_HA16D:
4252 1.1 christos break;
4253 1.3 christos
4254 1.1 christos case R_PPC_EMB_SDA2REL:
4255 1.1 christos if (bfd_link_pic (info))
4256 1.1 christos {
4257 1.1 christos bad_shared_reloc (abfd, r_type);
4258 1.1 christos return FALSE;
4259 1.1 christos }
4260 1.1 christos htab->sdata[1].sym->ref_regular = 1;
4261 1.1 christos if (h != NULL)
4262 1.1 christos {
4263 1.1 christos ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4264 1.1 christos h->non_got_ref = TRUE;
4265 1.6 christos }
4266 1.1 christos break;
4267 1.1 christos
4268 1.1 christos case R_PPC_VLE_SDA21_LO:
4269 1.1 christos case R_PPC_VLE_SDA21:
4270 1.1 christos case R_PPC_EMB_SDA21:
4271 1.1 christos case R_PPC_EMB_RELSDA:
4272 1.1 christos if (bfd_link_pic (info))
4273 1.1 christos {
4274 1.1 christos bad_shared_reloc (abfd, r_type);
4275 1.1 christos return FALSE;
4276 1.1 christos }
4277 1.1 christos if (h != NULL)
4278 1.1 christos {
4279 1.1 christos ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4280 1.1 christos h->non_got_ref = TRUE;
4281 1.1 christos }
4282 1.6 christos break;
4283 1.1 christos
4284 1.1 christos case R_PPC_EMB_NADDR32:
4285 1.1 christos case R_PPC_EMB_NADDR16:
4286 1.1 christos case R_PPC_EMB_NADDR16_LO:
4287 1.1 christos case R_PPC_EMB_NADDR16_HI:
4288 1.1 christos case R_PPC_EMB_NADDR16_HA:
4289 1.1 christos if (bfd_link_pic (info))
4290 1.1 christos {
4291 1.1 christos bad_shared_reloc (abfd, r_type);
4292 1.1 christos return FALSE;
4293 1.1 christos }
4294 1.1 christos if (h != NULL)
4295 1.1 christos h->non_got_ref = TRUE;
4296 1.1 christos break;
4297 1.1 christos
4298 1.1 christos case R_PPC_PLTREL24:
4299 1.1 christos if (h == NULL)
4300 1.1 christos break;
4301 1.1 christos /* Fall through */
4302 1.1 christos case R_PPC_PLT32:
4303 1.6 christos case R_PPC_PLTREL32:
4304 1.1 christos case R_PPC_PLT16_LO:
4305 1.1 christos case R_PPC_PLT16_HI:
4306 1.6 christos case R_PPC_PLT16_HA:
4307 1.6 christos #ifdef DEBUG
4308 1.6 christos fprintf (stderr, "Reloc requires a PLT entry\n");
4309 1.6 christos #endif
4310 1.6 christos /* This symbol requires a procedure linkage table entry. */
4311 1.6 christos if (h == NULL)
4312 1.6 christos {
4313 1.6 christos if (ifunc == NULL)
4314 1.6 christos {
4315 1.6 christos /* It does not make sense to have a procedure linkage
4316 1.6 christos table entry for a non-ifunc local symbol. */
4317 1.1 christos info->callbacks->einfo
4318 1.1 christos (_("%P: %H: %s reloc against local symbol\n"),
4319 1.1 christos abfd, sec, rel->r_offset,
4320 1.1 christos ppc_elf_howto_table[r_type]->name);
4321 1.1 christos bfd_set_error (bfd_error_bad_value);
4322 1.1 christos return FALSE;
4323 1.1 christos }
4324 1.1 christos }
4325 1.6 christos else
4326 1.1 christos {
4327 1.1 christos bfd_vma addend = 0;
4328 1.1 christos
4329 1.1 christos if (r_type == R_PPC_PLTREL24)
4330 1.1 christos {
4331 1.1 christos ppc_elf_tdata (abfd)->makes_plt_call = 1;
4332 1.1 christos if (bfd_link_pic (info))
4333 1.1 christos addend = rel->r_addend;
4334 1.1 christos }
4335 1.1 christos h->needs_plt = 1;
4336 1.1 christos if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4337 1.1 christos return FALSE;
4338 1.1 christos }
4339 1.1 christos break;
4340 1.1 christos
4341 1.1 christos /* The following relocations don't need to propagate the
4342 1.1 christos relocation if linking a shared object since they are
4343 1.1 christos section relative. */
4344 1.1 christos case R_PPC_SECTOFF:
4345 1.1 christos case R_PPC_SECTOFF_LO:
4346 1.1 christos case R_PPC_SECTOFF_HI:
4347 1.1 christos case R_PPC_SECTOFF_HA:
4348 1.1 christos case R_PPC_DTPREL16:
4349 1.1 christos case R_PPC_DTPREL16_LO:
4350 1.1 christos case R_PPC_DTPREL16_HI:
4351 1.1 christos case R_PPC_DTPREL16_HA:
4352 1.6 christos case R_PPC_TOC16:
4353 1.1 christos break;
4354 1.1 christos
4355 1.1 christos case R_PPC_REL16:
4356 1.1 christos case R_PPC_REL16_LO:
4357 1.1 christos case R_PPC_REL16_HI:
4358 1.1 christos case R_PPC_REL16_HA:
4359 1.1 christos case R_PPC_REL16DX_HA:
4360 1.1 christos ppc_elf_tdata (abfd)->has_rel16 = 1;
4361 1.1 christos break;
4362 1.1 christos
4363 1.1 christos /* These are just markers. */
4364 1.1 christos case R_PPC_TLS:
4365 1.1 christos case R_PPC_EMB_MRKREF:
4366 1.1 christos case R_PPC_NONE:
4367 1.1 christos case R_PPC_max:
4368 1.1 christos case R_PPC_RELAX:
4369 1.1 christos case R_PPC_RELAX_PLT:
4370 1.1 christos case R_PPC_RELAX_PLTREL24:
4371 1.1 christos break;
4372 1.1 christos
4373 1.1 christos /* These should only appear in dynamic objects. */
4374 1.1 christos case R_PPC_COPY:
4375 1.1 christos case R_PPC_GLOB_DAT:
4376 1.1 christos case R_PPC_JMP_SLOT:
4377 1.1 christos case R_PPC_RELATIVE:
4378 1.1 christos case R_PPC_IRELATIVE:
4379 1.1 christos break;
4380 1.1 christos
4381 1.1 christos /* These aren't handled yet. We'll report an error later. */
4382 1.1 christos case R_PPC_ADDR30:
4383 1.1 christos case R_PPC_EMB_RELSEC16:
4384 1.1 christos case R_PPC_EMB_RELST_LO:
4385 1.1 christos case R_PPC_EMB_RELST_HI:
4386 1.1 christos case R_PPC_EMB_RELST_HA:
4387 1.1 christos case R_PPC_EMB_BIT_FLD:
4388 1.1 christos break;
4389 1.1 christos
4390 1.3 christos /* This refers only to functions defined in the shared library. */
4391 1.3 christos case R_PPC_LOCAL24PC:
4392 1.6 christos if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4393 1.3 christos {
4394 1.6 christos htab->plt_type = PLT_OLD;
4395 1.6 christos htab->old_bfd = abfd;
4396 1.6 christos }
4397 1.6 christos if (h != NULL && h->type == STT_GNU_IFUNC)
4398 1.3 christos {
4399 1.3 christos if (bfd_link_pic (info))
4400 1.3 christos {
4401 1.3 christos info->callbacks->einfo
4402 1.3 christos (_("%P: %H: @local call to ifunc %s\n"),
4403 1.3 christos abfd, sec, rel->r_offset,
4404 1.3 christos h->root.root.string);
4405 1.1 christos bfd_set_error (bfd_error_bad_value);
4406 1.1 christos return FALSE;
4407 1.1 christos }
4408 1.1 christos h->needs_plt = 1;
4409 1.1 christos if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4410 1.1 christos return FALSE;
4411 1.1 christos }
4412 1.1 christos break;
4413 1.1 christos
4414 1.1 christos /* This relocation describes the C++ object vtable hierarchy.
4415 1.1 christos Reconstruct it for later use during GC. */
4416 1.1 christos case R_PPC_GNU_VTINHERIT:
4417 1.1 christos if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4418 1.1 christos return FALSE;
4419 1.1 christos break;
4420 1.1 christos
4421 1.1 christos /* This relocation describes which C++ vtable entries are actually
4422 1.1 christos used. Record for later use during GC. */
4423 1.1 christos case R_PPC_GNU_VTENTRY:
4424 1.1 christos BFD_ASSERT (h != NULL);
4425 1.1 christos if (h != NULL
4426 1.1 christos && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4427 1.1 christos return FALSE;
4428 1.1 christos break;
4429 1.6 christos
4430 1.1 christos /* We shouldn't really be seeing these. */
4431 1.1 christos case R_PPC_TPREL32:
4432 1.1 christos case R_PPC_TPREL16:
4433 1.1 christos case R_PPC_TPREL16_LO:
4434 1.1 christos case R_PPC_TPREL16_HI:
4435 1.1 christos case R_PPC_TPREL16_HA:
4436 1.1 christos if (bfd_link_pic (info))
4437 1.1 christos info->flags |= DF_STATIC_TLS;
4438 1.1 christos goto dodyn;
4439 1.1 christos
4440 1.1 christos /* Nor these. */
4441 1.1 christos case R_PPC_DTPMOD32:
4442 1.6 christos case R_PPC_DTPREL32:
4443 1.1 christos goto dodyn;
4444 1.1 christos
4445 1.1 christos case R_PPC_REL32:
4446 1.1 christos if (h == NULL
4447 1.1 christos && got2 != NULL
4448 1.1 christos && (sec->flags & SEC_CODE) != 0
4449 1.1 christos && bfd_link_pic (info)
4450 1.1 christos && htab->plt_type == PLT_UNSET)
4451 1.1 christos {
4452 1.1 christos /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4453 1.1 christos the start of a function, which assembles to a REL32
4454 1.1 christos reference to .got2. If we detect one of these, then
4455 1.1 christos force the old PLT layout because the linker cannot
4456 1.1 christos reliably deduce the GOT pointer value needed for
4457 1.1 christos PLT call stubs. */
4458 1.1 christos asection *s;
4459 1.1 christos Elf_Internal_Sym *isym;
4460 1.1 christos
4461 1.1 christos isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4462 1.1 christos abfd, r_symndx);
4463 1.1 christos if (isym == NULL)
4464 1.1 christos return FALSE;
4465 1.1 christos
4466 1.1 christos s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4467 1.1 christos if (s == got2)
4468 1.1 christos {
4469 1.1 christos htab->plt_type = PLT_OLD;
4470 1.1 christos htab->old_bfd = abfd;
4471 1.1 christos }
4472 1.1 christos }
4473 1.1 christos if (h == NULL || h == htab->elf.hgot)
4474 1.1 christos break;
4475 1.1 christos /* fall through */
4476 1.1 christos
4477 1.6 christos case R_PPC_ADDR32:
4478 1.1 christos case R_PPC_ADDR16:
4479 1.1 christos case R_PPC_ADDR16_LO:
4480 1.1 christos case R_PPC_ADDR16_HI:
4481 1.1 christos case R_PPC_ADDR16_HA:
4482 1.1 christos case R_PPC_UADDR32:
4483 1.1 christos case R_PPC_UADDR16:
4484 1.1 christos if (h != NULL && !bfd_link_pic (info))
4485 1.1 christos {
4486 1.1 christos /* We may need a plt entry if the symbol turns out to be
4487 1.5 christos a function defined in a dynamic object. */
4488 1.5 christos if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4489 1.5 christos return FALSE;
4490 1.5 christos
4491 1.1 christos /* We may need a copy reloc too. */
4492 1.1 christos h->non_got_ref = 1;
4493 1.1 christos h->pointer_equality_needed = 1;
4494 1.1 christos if (r_type == R_PPC_ADDR16_HA)
4495 1.1 christos ppc_elf_hash_entry (h)->has_addr16_ha = 1;
4496 1.1 christos if (r_type == R_PPC_ADDR16_LO)
4497 1.1 christos ppc_elf_hash_entry (h)->has_addr16_lo = 1;
4498 1.1 christos }
4499 1.1 christos goto dodyn;
4500 1.1 christos
4501 1.1 christos case R_PPC_REL24:
4502 1.1 christos case R_PPC_REL14:
4503 1.1 christos case R_PPC_REL14_BRTAKEN:
4504 1.1 christos case R_PPC_REL14_BRNTAKEN:
4505 1.1 christos if (h == NULL)
4506 1.1 christos break;
4507 1.1 christos if (h == htab->elf.hgot)
4508 1.1 christos {
4509 1.1 christos if (htab->plt_type == PLT_UNSET)
4510 1.1 christos {
4511 1.1 christos htab->plt_type = PLT_OLD;
4512 1.1 christos htab->old_bfd = abfd;
4513 1.1 christos }
4514 1.1 christos break;
4515 1.6 christos }
4516 1.1 christos /* fall through */
4517 1.1 christos
4518 1.1 christos case R_PPC_ADDR24:
4519 1.1 christos case R_PPC_ADDR14:
4520 1.1 christos case R_PPC_ADDR14_BRTAKEN:
4521 1.1 christos case R_PPC_ADDR14_BRNTAKEN:
4522 1.1 christos if (h != NULL && !bfd_link_pic (info))
4523 1.1 christos {
4524 1.1 christos /* We may need a plt entry if the symbol turns out to be
4525 1.1 christos a function defined in a dynamic object. */
4526 1.1 christos h->needs_plt = 1;
4527 1.1 christos if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4528 1.1 christos return FALSE;
4529 1.1 christos break;
4530 1.1 christos }
4531 1.1 christos
4532 1.1 christos dodyn:
4533 1.1 christos /* If we are creating a shared library, and this is a reloc
4534 1.1 christos against a global symbol, or a non PC relative reloc
4535 1.1 christos against a local symbol, then we need to copy the reloc
4536 1.1 christos into the shared library. However, if we are linking with
4537 1.1 christos -Bsymbolic, we do not need to copy a reloc against a
4538 1.1 christos global symbol which is defined in an object we are
4539 1.1 christos including in the link (i.e., DEF_REGULAR is set). At
4540 1.1 christos this point we have not seen all the input files, so it is
4541 1.1 christos possible that DEF_REGULAR is not set now but will be set
4542 1.1 christos later (it is never cleared). In case of a weak definition,
4543 1.1 christos DEF_REGULAR may be cleared later by a strong definition in
4544 1.1 christos a shared library. We account for that possibility below by
4545 1.1 christos storing information in the dyn_relocs field of the hash
4546 1.1 christos table entry. A similar situation occurs when creating
4547 1.6 christos shared libraries and symbol visibility changes render the
4548 1.1 christos symbol local.
4549 1.1 christos
4550 1.1 christos If on the other hand, we are creating an executable, we
4551 1.1 christos may need to keep relocations for symbols satisfied by a
4552 1.1 christos dynamic library if we manage to avoid copy relocs for the
4553 1.1 christos symbol. */
4554 1.6 christos if ((bfd_link_pic (info)
4555 1.1 christos && (must_be_dyn_reloc (info, r_type)
4556 1.1 christos || (h != NULL
4557 1.1 christos && (!SYMBOLIC_BIND (info, h)
4558 1.1 christos || h->root.type == bfd_link_hash_defweak
4559 1.1 christos || !h->def_regular))))
4560 1.1 christos || (ELIMINATE_COPY_RELOCS
4561 1.1 christos && !bfd_link_pic (info)
4562 1.1 christos && h != NULL
4563 1.1 christos && (h->root.type == bfd_link_hash_defweak
4564 1.1 christos || !h->def_regular)))
4565 1.1 christos {
4566 1.1 christos #ifdef DEBUG
4567 1.1 christos fprintf (stderr,
4568 1.1 christos "ppc_elf_check_relocs needs to "
4569 1.1 christos "create relocation for %s\n",
4570 1.1 christos (h && h->root.root.string
4571 1.1 christos ? h->root.root.string : "<unknown>"));
4572 1.1 christos #endif
4573 1.1 christos if (sreloc == NULL)
4574 1.1 christos {
4575 1.1 christos if (htab->elf.dynobj == NULL)
4576 1.1 christos htab->elf.dynobj = abfd;
4577 1.1 christos
4578 1.1 christos sreloc = _bfd_elf_make_dynamic_reloc_section
4579 1.1 christos (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4580 1.1 christos
4581 1.1 christos if (sreloc == NULL)
4582 1.1 christos return FALSE;
4583 1.1 christos }
4584 1.1 christos
4585 1.1 christos /* If this is a global symbol, we count the number of
4586 1.1 christos relocations we need for this symbol. */
4587 1.1 christos if (h != NULL)
4588 1.1 christos {
4589 1.1 christos struct elf_dyn_relocs *p;
4590 1.1 christos struct elf_dyn_relocs **rel_head;
4591 1.1 christos
4592 1.1 christos rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4593 1.1 christos p = *rel_head;
4594 1.1 christos if (p == NULL || p->sec != sec)
4595 1.1 christos {
4596 1.1 christos p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4597 1.1 christos if (p == NULL)
4598 1.1 christos return FALSE;
4599 1.1 christos p->next = *rel_head;
4600 1.1 christos *rel_head = p;
4601 1.1 christos p->sec = sec;
4602 1.1 christos p->count = 0;
4603 1.1 christos p->pc_count = 0;
4604 1.1 christos }
4605 1.1 christos p->count += 1;
4606 1.1 christos if (!must_be_dyn_reloc (info, r_type))
4607 1.1 christos p->pc_count += 1;
4608 1.1 christos }
4609 1.1 christos else
4610 1.1 christos {
4611 1.1 christos /* Track dynamic relocs needed for local syms too.
4612 1.1 christos We really need local syms available to do this
4613 1.1 christos easily. Oh well. */
4614 1.1 christos struct ppc_dyn_relocs *p;
4615 1.1 christos struct ppc_dyn_relocs **rel_head;
4616 1.1 christos bfd_boolean is_ifunc;
4617 1.1 christos asection *s;
4618 1.1 christos void *vpp;
4619 1.1 christos Elf_Internal_Sym *isym;
4620 1.1 christos
4621 1.1 christos isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4622 1.1 christos abfd, r_symndx);
4623 1.1 christos if (isym == NULL)
4624 1.1 christos return FALSE;
4625 1.1 christos
4626 1.1 christos s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4627 1.1 christos if (s == NULL)
4628 1.1 christos s = sec;
4629 1.1 christos
4630 1.1 christos vpp = &elf_section_data (s)->local_dynrel;
4631 1.1 christos rel_head = (struct ppc_dyn_relocs **) vpp;
4632 1.1 christos is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4633 1.1 christos p = *rel_head;
4634 1.1 christos if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4635 1.1 christos p = p->next;
4636 1.1 christos if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4637 1.1 christos {
4638 1.1 christos p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4639 1.1 christos if (p == NULL)
4640 1.1 christos return FALSE;
4641 1.1 christos p->next = *rel_head;
4642 1.1 christos *rel_head = p;
4643 1.1 christos p->sec = sec;
4644 1.1 christos p->ifunc = is_ifunc;
4645 1.1 christos p->count = 0;
4646 1.1 christos }
4647 1.1 christos p->count += 1;
4648 1.1 christos }
4649 1.1 christos }
4650 1.1 christos
4651 1.1 christos break;
4652 1.1 christos }
4653 1.1 christos }
4654 1.1 christos
4655 1.1 christos return TRUE;
4656 1.1 christos }
4657 1.1 christos
4658 1.1 christos
4660 1.1 christos /* Merge object attributes from IBFD into OBFD. Raise an error if
4661 1.1 christos there are conflicting attributes. */
4662 1.1 christos static bfd_boolean
4663 1.1 christos ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4664 1.1 christos {
4665 1.1 christos obj_attribute *in_attr, *in_attrs;
4666 1.1 christos obj_attribute *out_attr, *out_attrs;
4667 1.1 christos
4668 1.1 christos if (!elf_known_obj_attributes_proc (obfd)[0].i)
4669 1.1 christos {
4670 1.1 christos /* This is the first object. Copy the attributes. */
4671 1.1 christos _bfd_elf_copy_obj_attributes (ibfd, obfd);
4672 1.1 christos
4673 1.1 christos /* Use the Tag_null value to indicate the attributes have been
4674 1.1 christos initialized. */
4675 1.1 christos elf_known_obj_attributes_proc (obfd)[0].i = 1;
4676 1.1 christos
4677 1.1 christos return TRUE;
4678 1.1 christos }
4679 1.1 christos
4680 1.1 christos in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4681 1.1 christos out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4682 1.1 christos
4683 1.1 christos /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4684 1.1 christos non-conflicting ones. */
4685 1.1 christos in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4686 1.1 christos out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4687 1.1 christos if (in_attr->i != out_attr->i)
4688 1.1 christos {
4689 1.1 christos out_attr->type = 1;
4690 1.1 christos if (out_attr->i == 0)
4691 1.1 christos out_attr->i = in_attr->i;
4692 1.1 christos else if (in_attr->i == 0)
4693 1.1 christos ;
4694 1.1 christos else if (out_attr->i == 1 && in_attr->i == 2)
4695 1.1 christos _bfd_error_handler
4696 1.1 christos (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4697 1.1 christos else if (out_attr->i == 1 && in_attr->i == 3)
4698 1.1 christos _bfd_error_handler
4699 1.1 christos (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4700 1.1 christos obfd, ibfd);
4701 1.1 christos else if (out_attr->i == 3 && in_attr->i == 1)
4702 1.1 christos _bfd_error_handler
4703 1.1 christos (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4704 1.1 christos ibfd, obfd);
4705 1.1 christos else if (out_attr->i == 3 && in_attr->i == 2)
4706 1.1 christos _bfd_error_handler
4707 1.1 christos (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4708 1.1 christos ibfd, obfd);
4709 1.1 christos else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
4710 1.1 christos _bfd_error_handler
4711 1.1 christos (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4712 1.1 christos else if (in_attr->i > 3)
4713 1.1 christos _bfd_error_handler
4714 1.1 christos (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
4715 1.1 christos in_attr->i);
4716 1.1 christos else
4717 1.1 christos _bfd_error_handler
4718 1.1 christos (_("Warning: %B uses unknown floating point ABI %d"), obfd,
4719 1.1 christos out_attr->i);
4720 1.1 christos }
4721 1.1 christos
4722 1.1 christos /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4723 1.1 christos merge non-conflicting ones. */
4724 1.1 christos in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4725 1.1 christos out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4726 1.1 christos if (in_attr->i != out_attr->i)
4727 1.1 christos {
4728 1.1 christos const char *in_abi = NULL, *out_abi = NULL;
4729 1.1 christos
4730 1.1 christos switch (in_attr->i)
4731 1.1 christos {
4732 1.1 christos case 1: in_abi = "generic"; break;
4733 1.1 christos case 2: in_abi = "AltiVec"; break;
4734 1.1 christos case 3: in_abi = "SPE"; break;
4735 1.1 christos }
4736 1.1 christos
4737 1.1 christos switch (out_attr->i)
4738 1.1 christos {
4739 1.1 christos case 1: out_abi = "generic"; break;
4740 1.1 christos case 2: out_abi = "AltiVec"; break;
4741 1.1 christos case 3: out_abi = "SPE"; break;
4742 1.1 christos }
4743 1.1 christos
4744 1.1 christos out_attr->type = 1;
4745 1.1 christos if (out_attr->i == 0)
4746 1.1 christos out_attr->i = in_attr->i;
4747 1.1 christos else if (in_attr->i == 0)
4748 1.1 christos ;
4749 1.1 christos /* For now, allow generic to transition to AltiVec or SPE
4750 1.1 christos without a warning. If GCC marked files with their stack
4751 1.1 christos alignment and used don't-care markings for files which are
4752 1.1 christos not affected by the vector ABI, we could warn about this
4753 1.1 christos case too. */
4754 1.1 christos else if (out_attr->i == 1)
4755 1.1 christos out_attr->i = in_attr->i;
4756 1.1 christos else if (in_attr->i == 1)
4757 1.1 christos ;
4758 1.1 christos else if (in_abi == NULL)
4759 1.1 christos _bfd_error_handler
4760 1.1 christos (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4761 1.1 christos in_attr->i);
4762 1.1 christos else if (out_abi == NULL)
4763 1.1 christos _bfd_error_handler
4764 1.1 christos (_("Warning: %B uses unknown vector ABI %d"), obfd,
4765 1.1 christos in_attr->i);
4766 1.1 christos else
4767 1.1 christos _bfd_error_handler
4768 1.1 christos (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4769 1.1 christos ibfd, obfd, in_abi, out_abi);
4770 1.1 christos }
4771 1.1 christos
4772 1.1 christos /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4773 1.1 christos and merge non-conflicting ones. */
4774 1.1 christos in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4775 1.1 christos out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4776 1.1 christos if (in_attr->i != out_attr->i)
4777 1.1 christos {
4778 1.1 christos out_attr->type = 1;
4779 1.1 christos if (out_attr->i == 0)
4780 1.1 christos out_attr->i = in_attr->i;
4781 1.1 christos else if (in_attr->i == 0)
4782 1.1 christos ;
4783 1.1 christos else if (out_attr->i == 1 && in_attr->i == 2)
4784 1.1 christos _bfd_error_handler
4785 1.1 christos (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4786 1.1 christos else if (out_attr->i == 2 && in_attr->i == 1)
4787 1.1 christos _bfd_error_handler
4788 1.1 christos (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4789 1.1 christos else if (in_attr->i > 2)
4790 1.1 christos _bfd_error_handler
4791 1.1 christos (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4792 1.1 christos in_attr->i);
4793 1.1 christos else
4794 1.1 christos _bfd_error_handler
4795 1.1 christos (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4796 1.1 christos out_attr->i);
4797 1.1 christos }
4798 1.1 christos
4799 1.1 christos /* Merge Tag_compatibility attributes and any common GNU ones. */
4800 1.1 christos _bfd_elf_merge_object_attributes (ibfd, obfd);
4801 1.1 christos
4802 1.1 christos return TRUE;
4803 1.1 christos }
4804 1.1 christos
4805 1.1 christos /* Merge backend specific data from an object file to the output
4806 1.1 christos object file when linking. */
4807 1.1 christos
4808 1.1 christos static bfd_boolean
4809 1.1 christos ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4810 1.1 christos {
4811 1.1 christos flagword old_flags;
4812 1.1 christos flagword new_flags;
4813 1.1 christos bfd_boolean error;
4814 1.1 christos
4815 1.1 christos if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4816 1.1 christos return TRUE;
4817 1.1 christos
4818 1.1 christos /* Check if we have the same endianness. */
4819 1.1 christos if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4820 1.1 christos return FALSE;
4821 1.1 christos
4822 1.1 christos if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4823 1.1 christos return FALSE;
4824 1.1 christos
4825 1.1 christos new_flags = elf_elfheader (ibfd)->e_flags;
4826 1.1 christos old_flags = elf_elfheader (obfd)->e_flags;
4827 1.1 christos if (!elf_flags_init (obfd))
4828 1.1 christos {
4829 1.1 christos /* First call, no flags set. */
4830 1.1 christos elf_flags_init (obfd) = TRUE;
4831 1.1 christos elf_elfheader (obfd)->e_flags = new_flags;
4832 1.1 christos }
4833 1.1 christos
4834 1.1 christos /* Compatible flags are ok. */
4835 1.1 christos else if (new_flags == old_flags)
4836 1.1 christos ;
4837 1.1 christos
4838 1.1 christos /* Incompatible flags. */
4839 1.1 christos else
4840 1.1 christos {
4841 1.1 christos /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4842 1.1 christos to be linked with either. */
4843 1.1 christos error = FALSE;
4844 1.1 christos if ((new_flags & EF_PPC_RELOCATABLE) != 0
4845 1.1 christos && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4846 1.1 christos {
4847 1.1 christos error = TRUE;
4848 1.1 christos (*_bfd_error_handler)
4849 1.1 christos (_("%B: compiled with -mrelocatable and linked with "
4850 1.1 christos "modules compiled normally"), ibfd);
4851 1.1 christos }
4852 1.1 christos else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4853 1.1 christos && (old_flags & EF_PPC_RELOCATABLE) != 0)
4854 1.1 christos {
4855 1.1 christos error = TRUE;
4856 1.1 christos (*_bfd_error_handler)
4857 1.1 christos (_("%B: compiled normally and linked with "
4858 1.1 christos "modules compiled with -mrelocatable"), ibfd);
4859 1.1 christos }
4860 1.1 christos
4861 1.1 christos /* The output is -mrelocatable-lib iff both the input files are. */
4862 1.1 christos if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4863 1.1 christos elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4864 1.1 christos
4865 1.1 christos /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4866 1.1 christos but each input file is either -mrelocatable or -mrelocatable-lib. */
4867 1.1 christos if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4868 1.1 christos && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4869 1.1 christos && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4870 1.1 christos elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4871 1.1 christos
4872 1.1 christos /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4873 1.1 christos any module uses it. */
4874 1.1 christos elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4875 1.1 christos
4876 1.1 christos new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4877 1.1 christos old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4878 1.1 christos
4879 1.1 christos /* Warn about any other mismatches. */
4880 1.1 christos if (new_flags != old_flags)
4881 1.1 christos {
4882 1.1 christos error = TRUE;
4883 1.1 christos (*_bfd_error_handler)
4884 1.1 christos (_("%B: uses different e_flags (0x%lx) fields "
4885 1.1 christos "than previous modules (0x%lx)"),
4886 1.1 christos ibfd, (long) new_flags, (long) old_flags);
4887 1.1 christos }
4888 1.1 christos
4889 1.1 christos if (error)
4890 1.1 christos {
4891 1.1 christos bfd_set_error (bfd_error_bad_value);
4892 1.3 christos return FALSE;
4893 1.3 christos }
4894 1.3 christos }
4895 1.1 christos
4896 1.1 christos return TRUE;
4897 1.3 christos }
4898 1.1 christos
4899 1.3 christos static void
4900 1.3 christos ppc_elf_vle_split16 (bfd *output_bfd, bfd_byte *loc,
4901 1.3 christos bfd_vma value,
4902 1.1 christos split16_format_type split16_format)
4903 1.3 christos
4904 1.3 christos {
4905 1.1 christos unsigned int insn, top5;
4906 1.1 christos
4907 1.1 christos insn = bfd_get_32 (output_bfd, loc);
4908 1.1 christos top5 = value & 0xf800;
4909 1.1 christos top5 = top5 << (split16_format == split16a_type ? 9 : 5);
4910 1.1 christos insn |= top5;
4911 1.1 christos insn |= value & 0x7ff;
4912 1.3 christos bfd_put_32 (output_bfd, insn, loc);
4913 1.1 christos }
4914 1.1 christos
4915 1.1 christos
4916 1.1 christos /* Choose which PLT scheme to use, and set .plt flags appropriately.
4918 1.1 christos Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4919 1.1 christos int
4920 1.1 christos ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4921 1.1 christos struct bfd_link_info *info)
4922 1.1 christos {
4923 1.3 christos struct ppc_elf_link_hash_table *htab;
4924 1.1 christos flagword flags;
4925 1.6 christos
4926 1.1 christos htab = ppc_elf_hash_table (info);
4927 1.1 christos
4928 1.1 christos if (htab->plt_type == PLT_UNSET)
4929 1.1 christos {
4930 1.1 christos struct elf_link_hash_entry *h;
4931 1.1 christos
4932 1.1 christos if (htab->params->plt_style == PLT_OLD)
4933 1.1 christos htab->plt_type = PLT_OLD;
4934 1.1 christos else if (bfd_link_pic (info)
4935 1.1 christos && htab->elf.dynamic_sections_created
4936 1.1 christos && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4937 1.1 christos FALSE, FALSE, TRUE)) != NULL
4938 1.1 christos && (h->type == STT_FUNC
4939 1.1 christos || h->needs_plt)
4940 1.1 christos && h->ref_regular
4941 1.1 christos && !(SYMBOL_CALLS_LOCAL (info, h)
4942 1.1 christos || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4943 1.1 christos && h->root.type == bfd_link_hash_undefweak)))
4944 1.1 christos {
4945 1.3 christos /* Profiling of shared libs (and pies) is not supported with
4946 1.1 christos secure plt, because ppc32 does profiling before a
4947 1.1 christos function prologue and a secure plt pic call stubs needs
4948 1.1 christos r30 to be set up. */
4949 1.1 christos htab->plt_type = PLT_OLD;
4950 1.1 christos }
4951 1.1 christos else
4952 1.1 christos {
4953 1.3 christos bfd *ibfd;
4954 1.1 christos enum ppc_elf_plt_type plt_type = htab->params->plt_style;
4955 1.1 christos
4956 1.1 christos /* Look through the reloc flags left by ppc_elf_check_relocs.
4957 1.1 christos Use the old style bss plt if a file makes plt calls
4958 1.1 christos without using the new relocs, and if ld isn't given
4959 1.1 christos --secure-plt and we never see REL16 relocs. */
4960 1.1 christos if (plt_type == PLT_UNSET)
4961 1.1 christos plt_type = PLT_OLD;
4962 1.1 christos for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
4963 1.1 christos if (is_ppc_elf (ibfd))
4964 1.1 christos {
4965 1.1 christos if (ppc_elf_tdata (ibfd)->has_rel16)
4966 1.1 christos plt_type = PLT_NEW;
4967 1.1 christos else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4968 1.3 christos {
4969 1.1 christos plt_type = PLT_OLD;
4970 1.1 christos htab->old_bfd = ibfd;
4971 1.1 christos break;
4972 1.1 christos }
4973 1.1 christos }
4974 1.1 christos htab->plt_type = plt_type;
4975 1.1 christos }
4976 1.1 christos }
4977 1.1 christos if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
4978 1.1 christos {
4979 1.1 christos if (htab->old_bfd != NULL)
4980 1.1 christos info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
4981 1.1 christos htab->old_bfd);
4982 1.1 christos else
4983 1.1 christos info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
4984 1.1 christos }
4985 1.1 christos
4986 1.1 christos BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4987 1.1 christos
4988 1.1 christos if (htab->plt_type == PLT_NEW)
4989 1.1 christos {
4990 1.1 christos flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4991 1.1 christos | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4992 1.1 christos
4993 1.1 christos /* The new PLT is a loaded section. */
4994 1.1 christos if (htab->plt != NULL
4995 1.1 christos && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4996 1.1 christos return -1;
4997 1.1 christos
4998 1.1 christos /* The new GOT is not executable. */
4999 1.1 christos if (htab->got != NULL
5000 1.1 christos && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
5001 1.1 christos return -1;
5002 1.1 christos }
5003 1.1 christos else
5004 1.1 christos {
5005 1.1 christos /* Stop an unused .glink section from affecting .text alignment. */
5006 1.1 christos if (htab->glink != NULL
5007 1.1 christos && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
5008 1.1 christos return -1;
5009 1.1 christos }
5010 1.1 christos return htab->plt_type == PLT_NEW;
5011 1.1 christos }
5012 1.1 christos
5013 1.1 christos /* Return the section that should be marked against GC for a given
5015 1.1 christos relocation. */
5016 1.1 christos
5017 1.1 christos static asection *
5018 1.1 christos ppc_elf_gc_mark_hook (asection *sec,
5019 1.1 christos struct bfd_link_info *info,
5020 1.1 christos Elf_Internal_Rela *rel,
5021 1.1 christos struct elf_link_hash_entry *h,
5022 1.1 christos Elf_Internal_Sym *sym)
5023 1.1 christos {
5024 1.1 christos if (h != NULL)
5025 1.1 christos switch (ELF32_R_TYPE (rel->r_info))
5026 1.1 christos {
5027 1.1 christos case R_PPC_GNU_VTINHERIT:
5028 1.1 christos case R_PPC_GNU_VTENTRY:
5029 1.1 christos return NULL;
5030 1.1 christos }
5031 1.1 christos
5032 1.1 christos return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5033 1.1 christos }
5034 1.1 christos
5035 1.1 christos /* Update the got, plt and dynamic reloc reference counts for the
5036 1.1 christos section being removed. */
5037 1.1 christos
5038 1.1 christos static bfd_boolean
5039 1.1 christos ppc_elf_gc_sweep_hook (bfd *abfd,
5040 1.1 christos struct bfd_link_info *info,
5041 1.6 christos asection *sec,
5042 1.1 christos const Elf_Internal_Rela *relocs)
5043 1.1 christos {
5044 1.1 christos struct ppc_elf_link_hash_table *htab;
5045 1.1 christos Elf_Internal_Shdr *symtab_hdr;
5046 1.1 christos struct elf_link_hash_entry **sym_hashes;
5047 1.1 christos bfd_signed_vma *local_got_refcounts;
5048 1.1 christos const Elf_Internal_Rela *rel, *relend;
5049 1.1 christos asection *got2;
5050 1.1 christos
5051 1.1 christos if (bfd_link_relocatable (info))
5052 1.1 christos return TRUE;
5053 1.1 christos
5054 1.1 christos if ((sec->flags & SEC_ALLOC) == 0)
5055 1.1 christos return TRUE;
5056 1.1 christos
5057 1.1 christos elf_section_data (sec)->local_dynrel = NULL;
5058 1.1 christos
5059 1.1 christos htab = ppc_elf_hash_table (info);
5060 1.1 christos symtab_hdr = &elf_symtab_hdr (abfd);
5061 1.1 christos sym_hashes = elf_sym_hashes (abfd);
5062 1.1 christos local_got_refcounts = elf_local_got_refcounts (abfd);
5063 1.1 christos got2 = bfd_get_section_by_name (abfd, ".got2");
5064 1.1 christos
5065 1.1 christos relend = relocs + sec->reloc_count;
5066 1.1 christos for (rel = relocs; rel < relend; rel++)
5067 1.1 christos {
5068 1.1 christos unsigned long r_symndx;
5069 1.1 christos enum elf_ppc_reloc_type r_type;
5070 1.1 christos struct elf_link_hash_entry *h = NULL;
5071 1.1 christos
5072 1.1 christos r_symndx = ELF32_R_SYM (rel->r_info);
5073 1.1 christos if (r_symndx >= symtab_hdr->sh_info)
5074 1.1 christos {
5075 1.1 christos struct elf_dyn_relocs **pp, *p;
5076 1.1 christos struct ppc_elf_link_hash_entry *eh;
5077 1.1 christos
5078 1.1 christos h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5079 1.1 christos while (h->root.type == bfd_link_hash_indirect
5080 1.1 christos || h->root.type == bfd_link_hash_warning)
5081 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
5082 1.1 christos eh = (struct ppc_elf_link_hash_entry *) h;
5083 1.1 christos
5084 1.1 christos for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5085 1.1 christos if (p->sec == sec)
5086 1.1 christos {
5087 1.6 christos /* Everything must go for SEC. */
5088 1.1 christos *pp = p->next;
5089 1.1 christos break;
5090 1.1 christos }
5091 1.1 christos }
5092 1.1 christos
5093 1.1 christos r_type = ELF32_R_TYPE (rel->r_info);
5094 1.1 christos if (!htab->is_vxworks
5095 1.1 christos && h == NULL
5096 1.1 christos && local_got_refcounts != NULL
5097 1.1 christos && (!bfd_link_pic (info)
5098 1.1 christos || is_branch_reloc (r_type)))
5099 1.1 christos {
5100 1.6 christos struct plt_entry **local_plt = (struct plt_entry **)
5101 1.1 christos (local_got_refcounts + symtab_hdr->sh_info);
5102 1.1 christos char *local_got_tls_masks = (char *)
5103 1.1 christos (local_plt + symtab_hdr->sh_info);
5104 1.1 christos if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
5105 1.1 christos {
5106 1.1 christos struct plt_entry **ifunc = local_plt + r_symndx;
5107 1.1 christos bfd_vma addend = 0;
5108 1.1 christos struct plt_entry *ent;
5109 1.1 christos
5110 1.1 christos if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
5111 1.1 christos addend = rel->r_addend;
5112 1.1 christos ent = find_plt_ent (ifunc, got2, addend);
5113 1.1 christos if (ent->plt.refcount > 0)
5114 1.1 christos ent->plt.refcount -= 1;
5115 1.1 christos continue;
5116 1.1 christos }
5117 1.1 christos }
5118 1.1 christos
5119 1.1 christos switch (r_type)
5120 1.1 christos {
5121 1.1 christos case R_PPC_GOT_TLSLD16:
5122 1.1 christos case R_PPC_GOT_TLSLD16_LO:
5123 1.1 christos case R_PPC_GOT_TLSLD16_HI:
5124 1.1 christos case R_PPC_GOT_TLSLD16_HA:
5125 1.1 christos case R_PPC_GOT_TLSGD16:
5126 1.1 christos case R_PPC_GOT_TLSGD16_LO:
5127 1.1 christos case R_PPC_GOT_TLSGD16_HI:
5128 1.1 christos case R_PPC_GOT_TLSGD16_HA:
5129 1.1 christos case R_PPC_GOT_TPREL16:
5130 1.1 christos case R_PPC_GOT_TPREL16_LO:
5131 1.1 christos case R_PPC_GOT_TPREL16_HI:
5132 1.1 christos case R_PPC_GOT_TPREL16_HA:
5133 1.1 christos case R_PPC_GOT_DTPREL16:
5134 1.1 christos case R_PPC_GOT_DTPREL16_LO:
5135 1.6 christos case R_PPC_GOT_DTPREL16_HI:
5136 1.1 christos case R_PPC_GOT_DTPREL16_HA:
5137 1.1 christos case R_PPC_GOT16:
5138 1.1 christos case R_PPC_GOT16_LO:
5139 1.1 christos case R_PPC_GOT16_HI:
5140 1.1 christos case R_PPC_GOT16_HA:
5141 1.1 christos if (h != NULL)
5142 1.1 christos {
5143 1.1 christos if (h->got.refcount > 0)
5144 1.1 christos h->got.refcount--;
5145 1.1 christos if (!bfd_link_pic (info))
5146 1.1 christos {
5147 1.1 christos struct plt_entry *ent;
5148 1.1 christos
5149 1.1 christos ent = find_plt_ent (&h->plt.plist, NULL, 0);
5150 1.1 christos if (ent != NULL && ent->plt.refcount > 0)
5151 1.1 christos ent->plt.refcount -= 1;
5152 1.1 christos }
5153 1.1 christos }
5154 1.1 christos else if (local_got_refcounts != NULL)
5155 1.1 christos {
5156 1.1 christos if (local_got_refcounts[r_symndx] > 0)
5157 1.1 christos local_got_refcounts[r_symndx]--;
5158 1.1 christos }
5159 1.1 christos break;
5160 1.1 christos
5161 1.1 christos case R_PPC_REL24:
5162 1.1 christos case R_PPC_REL14:
5163 1.1 christos case R_PPC_REL14_BRTAKEN:
5164 1.1 christos case R_PPC_REL14_BRNTAKEN:
5165 1.1 christos case R_PPC_REL32:
5166 1.1 christos if (h == NULL || h == htab->elf.hgot)
5167 1.1 christos break;
5168 1.1 christos /* Fall thru */
5169 1.1 christos
5170 1.1 christos case R_PPC_ADDR32:
5171 1.6 christos case R_PPC_ADDR24:
5172 1.1 christos case R_PPC_ADDR16:
5173 1.1 christos case R_PPC_ADDR16_LO:
5174 1.1 christos case R_PPC_ADDR16_HI:
5175 1.1 christos case R_PPC_ADDR16_HA:
5176 1.1 christos case R_PPC_ADDR14:
5177 1.1 christos case R_PPC_ADDR14_BRTAKEN:
5178 1.1 christos case R_PPC_ADDR14_BRNTAKEN:
5179 1.1 christos case R_PPC_UADDR32:
5180 1.1 christos case R_PPC_UADDR16:
5181 1.1 christos if (bfd_link_pic (info))
5182 1.1 christos break;
5183 1.1 christos
5184 1.1 christos case R_PPC_PLT32:
5185 1.6 christos case R_PPC_PLTREL24:
5186 1.1 christos case R_PPC_PLTREL32:
5187 1.1 christos case R_PPC_PLT16_LO:
5188 1.1 christos case R_PPC_PLT16_HI:
5189 1.1 christos case R_PPC_PLT16_HA:
5190 1.1 christos if (h != NULL)
5191 1.1 christos {
5192 1.1 christos bfd_vma addend = 0;
5193 1.1 christos struct plt_entry *ent;
5194 1.1 christos
5195 1.1 christos if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
5196 1.1 christos addend = rel->r_addend;
5197 1.1 christos ent = find_plt_ent (&h->plt.plist, got2, addend);
5198 1.1 christos if (ent != NULL && ent->plt.refcount > 0)
5199 1.1 christos ent->plt.refcount -= 1;
5200 1.1 christos }
5201 1.1 christos break;
5202 1.1 christos
5203 1.1 christos default:
5204 1.3 christos break;
5205 1.1 christos }
5206 1.1 christos }
5207 1.1 christos return TRUE;
5208 1.1 christos }
5209 1.1 christos
5210 1.1 christos /* Set plt output section type, htab->tls_get_addr, and call the
5212 1.5 christos generic ELF tls_setup function. */
5213 1.5 christos
5214 1.3 christos asection *
5215 1.1 christos ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5216 1.1 christos {
5217 1.1 christos struct ppc_elf_link_hash_table *htab;
5218 1.1 christos
5219 1.1 christos htab = ppc_elf_hash_table (info);
5220 1.1 christos htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5221 1.1 christos FALSE, FALSE, TRUE);
5222 1.1 christos if (htab->plt_type != PLT_NEW)
5223 1.1 christos htab->params->no_tls_get_addr_opt = TRUE;
5224 1.1 christos
5225 1.1 christos if (!htab->params->no_tls_get_addr_opt)
5226 1.1 christos {
5227 1.1 christos struct elf_link_hash_entry *opt, *tga;
5228 1.1 christos opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5229 1.1 christos FALSE, FALSE, TRUE);
5230 1.1 christos if (opt != NULL
5231 1.1 christos && (opt->root.type == bfd_link_hash_defined
5232 1.1 christos || opt->root.type == bfd_link_hash_defweak))
5233 1.1 christos {
5234 1.1 christos /* If glibc supports an optimized __tls_get_addr call stub,
5235 1.1 christos signalled by the presence of __tls_get_addr_opt, and we'll
5236 1.1 christos be calling __tls_get_addr via a plt call stub, then
5237 1.1 christos make __tls_get_addr point to __tls_get_addr_opt. */
5238 1.1 christos tga = htab->tls_get_addr;
5239 1.1 christos if (htab->elf.dynamic_sections_created
5240 1.1 christos && tga != NULL
5241 1.1 christos && (tga->type == STT_FUNC
5242 1.1 christos || tga->needs_plt)
5243 1.1 christos && !(SYMBOL_CALLS_LOCAL (info, tga)
5244 1.1 christos || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
5245 1.6 christos && tga->root.type == bfd_link_hash_undefweak)))
5246 1.1 christos {
5247 1.1 christos struct plt_entry *ent;
5248 1.1 christos for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5249 1.1 christos if (ent->plt.refcount > 0)
5250 1.1 christos break;
5251 1.1 christos if (ent != NULL)
5252 1.1 christos {
5253 1.1 christos tga->root.type = bfd_link_hash_indirect;
5254 1.1 christos tga->root.u.i.link = &opt->root;
5255 1.1 christos ppc_elf_copy_indirect_symbol (info, opt, tga);
5256 1.1 christos opt->forced_local = 0;
5257 1.1 christos if (opt->dynindx != -1)
5258 1.1 christos {
5259 1.1 christos /* Use __tls_get_addr_opt in dynamic relocations. */
5260 1.3 christos opt->dynindx = -1;
5261 1.1 christos _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5262 1.1 christos opt->dynstr_index);
5263 1.1 christos if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5264 1.1 christos return FALSE;
5265 1.1 christos }
5266 1.1 christos htab->tls_get_addr = opt;
5267 1.1 christos }
5268 1.1 christos }
5269 1.1 christos }
5270 1.1 christos else
5271 1.1 christos htab->params->no_tls_get_addr_opt = TRUE;
5272 1.1 christos }
5273 1.1 christos if (htab->plt_type == PLT_NEW
5274 1.1 christos && htab->plt != NULL
5275 1.1 christos && htab->plt->output_section != NULL)
5276 1.1 christos {
5277 1.1 christos elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
5278 1.1 christos elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
5279 1.1 christos }
5280 1.1 christos
5281 1.1 christos return _bfd_elf_tls_setup (obfd, info);
5282 1.1 christos }
5283 1.1 christos
5284 1.1 christos /* Return TRUE iff REL is a branch reloc with a global symbol matching
5285 1.1 christos HASH. */
5286 1.1 christos
5287 1.1 christos static bfd_boolean
5288 1.1 christos branch_reloc_hash_match (const bfd *ibfd,
5289 1.1 christos const Elf_Internal_Rela *rel,
5290 1.1 christos const struct elf_link_hash_entry *hash)
5291 1.1 christos {
5292 1.1 christos Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5293 1.1 christos enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5294 1.1 christos unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5295 1.1 christos
5296 1.1 christos if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5297 1.1 christos {
5298 1.1 christos struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5299 1.1 christos struct elf_link_hash_entry *h;
5300 1.1 christos
5301 1.1 christos h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5302 1.1 christos while (h->root.type == bfd_link_hash_indirect
5303 1.1 christos || h->root.type == bfd_link_hash_warning)
5304 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
5305 1.1 christos if (h == hash)
5306 1.1 christos return TRUE;
5307 1.1 christos }
5308 1.1 christos return FALSE;
5309 1.1 christos }
5310 1.1 christos
5311 1.1 christos /* Run through all the TLS relocs looking for optimization
5312 1.6 christos opportunities. */
5313 1.1 christos
5314 1.1 christos bfd_boolean
5315 1.1 christos ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5316 1.1 christos struct bfd_link_info *info)
5317 1.1 christos {
5318 1.1 christos bfd *ibfd;
5319 1.1 christos asection *sec;
5320 1.1 christos struct ppc_elf_link_hash_table *htab;
5321 1.1 christos int pass;
5322 1.1 christos
5323 1.1 christos if (!bfd_link_executable (info))
5324 1.1 christos return TRUE;
5325 1.1 christos
5326 1.3 christos htab = ppc_elf_hash_table (info);
5327 1.1 christos if (htab == NULL)
5328 1.1 christos return FALSE;
5329 1.1 christos
5330 1.1 christos /* Make two passes through the relocs. First time check that tls
5331 1.1 christos relocs involved in setting up a tls_get_addr call are indeed
5332 1.1 christos followed by such a call. If they are not, don't do any tls
5333 1.1 christos optimization. On the second pass twiddle tls_mask flags to
5334 1.1 christos notify relocate_section that optimization can be done, and
5335 1.1 christos adjust got and plt refcounts. */
5336 1.1 christos for (pass = 0; pass < 2; ++pass)
5337 1.1 christos for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5338 1.1 christos {
5339 1.1 christos Elf_Internal_Sym *locsyms = NULL;
5340 1.1 christos Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5341 1.1 christos asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5342 1.1 christos
5343 1.1 christos for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5344 1.1 christos if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5345 1.1 christos {
5346 1.1 christos Elf_Internal_Rela *relstart, *rel, *relend;
5347 1.1 christos int expecting_tls_get_addr = 0;
5348 1.1 christos
5349 1.1 christos /* Read the relocations. */
5350 1.1 christos relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5351 1.1 christos info->keep_memory);
5352 1.1 christos if (relstart == NULL)
5353 1.1 christos return FALSE;
5354 1.1 christos
5355 1.1 christos relend = relstart + sec->reloc_count;
5356 1.1 christos for (rel = relstart; rel < relend; rel++)
5357 1.1 christos {
5358 1.1 christos enum elf_ppc_reloc_type r_type;
5359 1.1 christos unsigned long r_symndx;
5360 1.1 christos struct elf_link_hash_entry *h = NULL;
5361 1.1 christos char *tls_mask;
5362 1.1 christos char tls_set, tls_clear;
5363 1.1 christos bfd_boolean is_local;
5364 1.1 christos bfd_signed_vma *got_count;
5365 1.1 christos
5366 1.1 christos r_symndx = ELF32_R_SYM (rel->r_info);
5367 1.1 christos if (r_symndx >= symtab_hdr->sh_info)
5368 1.1 christos {
5369 1.1 christos struct elf_link_hash_entry **sym_hashes;
5370 1.1 christos
5371 1.1 christos sym_hashes = elf_sym_hashes (ibfd);
5372 1.1 christos h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5373 1.1 christos while (h->root.type == bfd_link_hash_indirect
5374 1.1 christos || h->root.type == bfd_link_hash_warning)
5375 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
5376 1.1 christos }
5377 1.1 christos
5378 1.1 christos is_local = FALSE;
5379 1.1 christos if (h == NULL
5380 1.1 christos || !h->def_dynamic)
5381 1.1 christos is_local = TRUE;
5382 1.1 christos
5383 1.1 christos r_type = ELF32_R_TYPE (rel->r_info);
5384 1.1 christos /* If this section has old-style __tls_get_addr calls
5385 1.1 christos without marker relocs, then check that each
5386 1.1 christos __tls_get_addr call reloc is preceded by a reloc
5387 1.1 christos that conceivably belongs to the __tls_get_addr arg
5388 1.1 christos setup insn. If we don't find matching arg setup
5389 1.1 christos relocs, don't do any tls optimization. */
5390 1.1 christos if (pass == 0
5391 1.1 christos && sec->has_tls_get_addr_call
5392 1.1 christos && h != NULL
5393 1.1 christos && h == htab->tls_get_addr
5394 1.1 christos && !expecting_tls_get_addr
5395 1.1 christos && is_branch_reloc (r_type))
5396 1.1 christos {
5397 1.1 christos info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5398 1.1 christos "TLS optimization disabled\n",
5399 1.1 christos ibfd, sec, rel->r_offset);
5400 1.1 christos if (elf_section_data (sec)->relocs != relstart)
5401 1.1 christos free (relstart);
5402 1.1 christos return TRUE;
5403 1.1 christos }
5404 1.1 christos
5405 1.1 christos expecting_tls_get_addr = 0;
5406 1.1 christos switch (r_type)
5407 1.1 christos {
5408 1.1 christos case R_PPC_GOT_TLSLD16:
5409 1.1 christos case R_PPC_GOT_TLSLD16_LO:
5410 1.1 christos expecting_tls_get_addr = 1;
5411 1.1 christos /* Fall thru */
5412 1.1 christos
5413 1.1 christos case R_PPC_GOT_TLSLD16_HI:
5414 1.1 christos case R_PPC_GOT_TLSLD16_HA:
5415 1.1 christos /* These relocs should never be against a symbol
5416 1.1 christos defined in a shared lib. Leave them alone if
5417 1.1 christos that turns out to be the case. */
5418 1.1 christos if (!is_local)
5419 1.1 christos continue;
5420 1.1 christos
5421 1.1 christos /* LD -> LE */
5422 1.1 christos tls_set = 0;
5423 1.1 christos tls_clear = TLS_LD;
5424 1.1 christos break;
5425 1.1 christos
5426 1.1 christos case R_PPC_GOT_TLSGD16:
5427 1.1 christos case R_PPC_GOT_TLSGD16_LO:
5428 1.1 christos expecting_tls_get_addr = 1;
5429 1.1 christos /* Fall thru */
5430 1.1 christos
5431 1.1 christos case R_PPC_GOT_TLSGD16_HI:
5432 1.1 christos case R_PPC_GOT_TLSGD16_HA:
5433 1.1 christos if (is_local)
5434 1.1 christos /* GD -> LE */
5435 1.1 christos tls_set = 0;
5436 1.1 christos else
5437 1.1 christos /* GD -> IE */
5438 1.1 christos tls_set = TLS_TLS | TLS_TPRELGD;
5439 1.1 christos tls_clear = TLS_GD;
5440 1.1 christos break;
5441 1.1 christos
5442 1.1 christos case R_PPC_GOT_TPREL16:
5443 1.1 christos case R_PPC_GOT_TPREL16_LO:
5444 1.1 christos case R_PPC_GOT_TPREL16_HI:
5445 1.1 christos case R_PPC_GOT_TPREL16_HA:
5446 1.1 christos if (is_local)
5447 1.1 christos {
5448 1.1 christos /* IE -> LE */
5449 1.1 christos tls_set = 0;
5450 1.1 christos tls_clear = TLS_TPREL;
5451 1.1 christos break;
5452 1.1 christos }
5453 1.1 christos else
5454 1.1 christos continue;
5455 1.1 christos
5456 1.1 christos case R_PPC_TLSGD:
5457 1.1 christos case R_PPC_TLSLD:
5458 1.1 christos expecting_tls_get_addr = 2;
5459 1.1 christos tls_set = 0;
5460 1.1 christos tls_clear = 0;
5461 1.1 christos break;
5462 1.1 christos
5463 1.1 christos default:
5464 1.1 christos continue;
5465 1.1 christos }
5466 1.1 christos
5467 1.1 christos if (pass == 0)
5468 1.1 christos {
5469 1.1 christos if (!expecting_tls_get_addr
5470 1.1 christos || (expecting_tls_get_addr == 1
5471 1.1 christos && !sec->has_tls_get_addr_call))
5472 1.1 christos continue;
5473 1.1 christos
5474 1.1 christos if (rel + 1 < relend
5475 1.1 christos && branch_reloc_hash_match (ibfd, rel + 1,
5476 1.1 christos htab->tls_get_addr))
5477 1.1 christos continue;
5478 1.1 christos
5479 1.1 christos /* Uh oh, we didn't find the expected call. We
5480 1.1 christos could just mark this symbol to exclude it
5481 1.1 christos from tls optimization but it's safer to skip
5482 1.1 christos the entire optimization. */
5483 1.1 christos info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5484 1.1 christos "TLS optimization disabled\n"),
5485 1.6 christos ibfd, sec, rel->r_offset);
5486 1.1 christos if (elf_section_data (sec)->relocs != relstart)
5487 1.1 christos free (relstart);
5488 1.1 christos return TRUE;
5489 1.1 christos }
5490 1.1 christos
5491 1.1 christos if (expecting_tls_get_addr)
5492 1.1 christos {
5493 1.1 christos struct plt_entry *ent;
5494 1.1 christos bfd_vma addend = 0;
5495 1.1 christos
5496 1.1 christos if (bfd_link_pic (info)
5497 1.1 christos && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5498 1.1 christos addend = rel[1].r_addend;
5499 1.1 christos ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5500 1.1 christos got2, addend);
5501 1.1 christos if (ent != NULL && ent->plt.refcount > 0)
5502 1.1 christos ent->plt.refcount -= 1;
5503 1.1 christos
5504 1.1 christos if (expecting_tls_get_addr == 2)
5505 1.1 christos continue;
5506 1.1 christos }
5507 1.1 christos
5508 1.1 christos if (h != NULL)
5509 1.1 christos {
5510 1.1 christos tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5511 1.1 christos got_count = &h->got.refcount;
5512 1.1 christos }
5513 1.1 christos else
5514 1.1 christos {
5515 1.1 christos bfd_signed_vma *lgot_refs;
5516 1.1 christos struct plt_entry **local_plt;
5517 1.1 christos char *lgot_masks;
5518 1.1 christos
5519 1.1 christos if (locsyms == NULL)
5520 1.1 christos {
5521 1.1 christos locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5522 1.1 christos if (locsyms == NULL)
5523 1.1 christos locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5524 1.1 christos symtab_hdr->sh_info,
5525 1.1 christos 0, NULL, NULL, NULL);
5526 1.1 christos if (locsyms == NULL)
5527 1.1 christos {
5528 1.1 christos if (elf_section_data (sec)->relocs != relstart)
5529 1.1 christos free (relstart);
5530 1.1 christos return FALSE;
5531 1.1 christos }
5532 1.1 christos }
5533 1.1 christos lgot_refs = elf_local_got_refcounts (ibfd);
5534 1.1 christos if (lgot_refs == NULL)
5535 1.1 christos abort ();
5536 1.1 christos local_plt = (struct plt_entry **)
5537 1.1 christos (lgot_refs + symtab_hdr->sh_info);
5538 1.1 christos lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5539 1.1 christos tls_mask = &lgot_masks[r_symndx];
5540 1.1 christos got_count = &lgot_refs[r_symndx];
5541 1.1 christos }
5542 1.1 christos
5543 1.1 christos if (tls_set == 0)
5544 1.1 christos {
5545 1.1 christos /* We managed to get rid of a got entry. */
5546 1.1 christos if (*got_count > 0)
5547 1.1 christos *got_count -= 1;
5548 1.1 christos }
5549 1.1 christos
5550 1.1 christos *tls_mask |= tls_set;
5551 1.1 christos *tls_mask &= ~tls_clear;
5552 1.1 christos }
5553 1.1 christos
5554 1.1 christos if (elf_section_data (sec)->relocs != relstart)
5555 1.1 christos free (relstart);
5556 1.1 christos }
5557 1.1 christos
5558 1.1 christos if (locsyms != NULL
5559 1.1 christos && (symtab_hdr->contents != (unsigned char *) locsyms))
5560 1.1 christos {
5561 1.1 christos if (!info->keep_memory)
5562 1.1 christos free (locsyms);
5563 1.1 christos else
5564 1.1 christos symtab_hdr->contents = (unsigned char *) locsyms;
5565 1.1 christos }
5566 1.1 christos }
5567 1.1 christos return TRUE;
5568 1.1 christos }
5569 1.1 christos
5570 1.1 christos /* Return true if we have dynamic relocs that apply to read-only sections. */
5572 1.1 christos
5573 1.1 christos static bfd_boolean
5574 1.1 christos readonly_dynrelocs (struct elf_link_hash_entry *h)
5575 1.1 christos {
5576 1.1 christos struct elf_dyn_relocs *p;
5577 1.1 christos
5578 1.1 christos for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5579 1.1 christos {
5580 1.1 christos asection *s = p->sec->output_section;
5581 1.1 christos
5582 1.1 christos if (s != NULL
5583 1.1 christos && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5584 1.1 christos == (SEC_READONLY | SEC_ALLOC)))
5585 1.1 christos return TRUE;
5586 1.1 christos }
5587 1.1 christos return FALSE;
5588 1.1 christos }
5589 1.1 christos
5590 1.1 christos /* Adjust a symbol defined by a dynamic object and referenced by a
5591 1.1 christos regular object. The current definition is in some section of the
5592 1.1 christos dynamic object, but we're not including those sections. We have to
5593 1.1 christos change the definition to something the rest of the link can
5594 1.1 christos understand. */
5595 1.1 christos
5596 1.1 christos static bfd_boolean
5597 1.1 christos ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5598 1.1 christos struct elf_link_hash_entry *h)
5599 1.1 christos {
5600 1.1 christos struct ppc_elf_link_hash_table *htab;
5601 1.1 christos asection *s;
5602 1.1 christos
5603 1.1 christos #ifdef DEBUG
5604 1.1 christos fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5605 1.1 christos h->root.root.string);
5606 1.1 christos #endif
5607 1.1 christos
5608 1.1 christos /* Make sure we know what is going on here. */
5609 1.1 christos htab = ppc_elf_hash_table (info);
5610 1.1 christos BFD_ASSERT (htab->elf.dynobj != NULL
5611 1.1 christos && (h->needs_plt
5612 1.1 christos || h->type == STT_GNU_IFUNC
5613 1.1 christos || h->u.weakdef != NULL
5614 1.1 christos || (h->def_dynamic
5615 1.1 christos && h->ref_regular
5616 1.1 christos && !h->def_regular)));
5617 1.1 christos
5618 1.1 christos /* Deal with function syms. */
5619 1.1 christos if (h->type == STT_FUNC
5620 1.1 christos || h->type == STT_GNU_IFUNC
5621 1.1 christos || h->needs_plt)
5622 1.1 christos {
5623 1.1 christos /* Clear procedure linkage table information for any symbol that
5624 1.1 christos won't need a .plt entry. */
5625 1.1 christos struct plt_entry *ent;
5626 1.1 christos for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5627 1.1 christos if (ent->plt.refcount > 0)
5628 1.1 christos break;
5629 1.1 christos if (ent == NULL
5630 1.1 christos || (h->type != STT_GNU_IFUNC
5631 1.1 christos && (SYMBOL_CALLS_LOCAL (info, h)
5632 1.1 christos || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5633 1.1 christos && h->root.type == bfd_link_hash_undefweak))))
5634 1.1 christos {
5635 1.3 christos /* A PLT entry is not required/allowed when:
5636 1.1 christos
5637 1.1 christos 1. We are not using ld.so; because then the PLT entry
5638 1.1 christos can't be set up, so we can't use one. In this case,
5639 1.3 christos ppc_elf_adjust_dynamic_symbol won't even be called.
5640 1.3 christos
5641 1.3 christos 2. GC has rendered the entry unused.
5642 1.3 christos
5643 1.3 christos 3. We know for certain that a call to this symbol
5644 1.3 christos will go to this object, or will remain undefined. */
5645 1.3 christos h->plt.plist = NULL;
5646 1.3 christos h->needs_plt = 0;
5647 1.3 christos h->pointer_equality_needed = 0;
5648 1.3 christos }
5649 1.3 christos else
5650 1.3 christos {
5651 1.3 christos /* Taking a function's address in a read/write section
5652 1.3 christos doesn't require us to define the function symbol in the
5653 1.1 christos executable on a plt call stub. A dynamic reloc can
5654 1.1 christos be used instead. */
5655 1.1 christos if (h->pointer_equality_needed
5656 1.1 christos && h->type != STT_GNU_IFUNC
5657 1.1 christos && !htab->is_vxworks
5658 1.1 christos && !ppc_elf_hash_entry (h)->has_sda_refs
5659 1.1 christos && !readonly_dynrelocs (h))
5660 1.1 christos {
5661 1.1 christos h->pointer_equality_needed = 0;
5662 1.3 christos h->non_got_ref = 0;
5663 1.3 christos }
5664 1.3 christos
5665 1.3 christos /* After adjust_dynamic_symbol, non_got_ref set in the
5666 1.3 christos non-shared case means that we have allocated space in
5667 1.3 christos .dynbss for the symbol and thus dyn_relocs for this
5668 1.1 christos symbol should be discarded.
5669 1.1 christos If we get here we know we are making a PLT entry for this
5670 1.5 christos symbol, and in an executable we'd normally resolve
5671 1.1 christos relocations against this symbol to the PLT entry. Allow
5672 1.1 christos dynamic relocs if the reference is weak, and the dynamic
5673 1.1 christos relocs will not cause text relocation. */
5674 1.1 christos else if (!h->ref_regular_nonweak
5675 1.1 christos && h->non_got_ref
5676 1.1 christos && h->type != STT_GNU_IFUNC
5677 1.1 christos && !htab->is_vxworks
5678 1.1 christos && !ppc_elf_hash_entry (h)->has_sda_refs
5679 1.1 christos && !readonly_dynrelocs (h))
5680 1.1 christos h->non_got_ref = 0;
5681 1.1 christos }
5682 1.1 christos h->protected_def = 0;
5683 1.1 christos return TRUE;
5684 1.1 christos }
5685 1.1 christos else
5686 1.1 christos h->plt.plist = NULL;
5687 1.1 christos
5688 1.1 christos /* If this is a weak symbol, and there is a real definition, the
5689 1.1 christos processor independent code will have arranged for us to see the
5690 1.1 christos real definition first, and we can just use the same value. */
5691 1.1 christos if (h->u.weakdef != NULL)
5692 1.1 christos {
5693 1.1 christos BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5694 1.1 christos || h->u.weakdef->root.type == bfd_link_hash_defweak);
5695 1.1 christos h->root.u.def.section = h->u.weakdef->root.u.def.section;
5696 1.1 christos h->root.u.def.value = h->u.weakdef->root.u.def.value;
5697 1.6 christos if (ELIMINATE_COPY_RELOCS)
5698 1.5 christos h->non_got_ref = h->u.weakdef->non_got_ref;
5699 1.5 christos return TRUE;
5700 1.5 christos }
5701 1.5 christos
5702 1.1 christos /* This is a reference to a symbol defined by a dynamic object which
5703 1.1 christos is not a function. */
5704 1.1 christos
5705 1.1 christos /* If we are creating a shared library, we must presume that the
5706 1.5 christos only references to the symbol are via the global offset table.
5707 1.5 christos For such cases we need not do anything here; the relocations will
5708 1.5 christos be handled correctly by relocate_section. */
5709 1.5 christos if (bfd_link_pic (info))
5710 1.5 christos {
5711 1.5 christos h->protected_def = 0;
5712 1.5 christos return TRUE;
5713 1.5 christos }
5714 1.5 christos
5715 1.5 christos /* If there are no references to this symbol that do not use the
5716 1.5 christos GOT, we don't need to generate a copy reloc. */
5717 1.5 christos if (!h->non_got_ref)
5718 1.5 christos {
5719 1.5 christos h->protected_def = 0;
5720 1.5 christos return TRUE;
5721 1.5 christos }
5722 1.5 christos
5723 1.5 christos /* Protected variables do not work with .dynbss. The copy in
5724 1.5 christos .dynbss won't be used by the shared library with the protected
5725 1.5 christos definition for the variable. Editing to PIC, or text relocations
5726 1.5 christos are preferable to an incorrect program. */
5727 1.5 christos if (h->protected_def)
5728 1.5 christos {
5729 1.5 christos if (ELIMINATE_COPY_RELOCS
5730 1.5 christos && ppc_elf_hash_entry (h)->has_addr16_ha
5731 1.5 christos && ppc_elf_hash_entry (h)->has_addr16_lo
5732 1.5 christos && htab->params->pic_fixup == 0
5733 1.1 christos && info->disable_target_specific_optimizations <= 1)
5734 1.1 christos htab->params->pic_fixup = 1;
5735 1.1 christos h->non_got_ref = 0;
5736 1.1 christos return TRUE;
5737 1.1 christos }
5738 1.1 christos
5739 1.1 christos /* If -z nocopyreloc was given, we won't generate them either. */
5740 1.1 christos if (info->nocopyreloc)
5741 1.1 christos {
5742 1.1 christos h->non_got_ref = 0;
5743 1.1 christos return TRUE;
5744 1.1 christos }
5745 1.1 christos
5746 1.1 christos /* If we didn't find any dynamic relocs in read-only sections, then
5747 1.1 christos we'll be keeping the dynamic relocs and avoiding the copy reloc.
5748 1.1 christos We can't do this if there are any small data relocations. This
5749 1.1 christos doesn't work on VxWorks, where we can not have dynamic
5750 1.1 christos relocations (other than copy and jump slot relocations) in an
5751 1.1 christos executable. */
5752 1.1 christos if (ELIMINATE_COPY_RELOCS
5753 1.1 christos && !ppc_elf_hash_entry (h)->has_sda_refs
5754 1.1 christos && !htab->is_vxworks
5755 1.1 christos && !h->def_regular
5756 1.1 christos && !readonly_dynrelocs (h))
5757 1.1 christos {
5758 1.1 christos h->non_got_ref = 0;
5759 1.1 christos return TRUE;
5760 1.1 christos }
5761 1.1 christos
5762 1.1 christos /* We must allocate the symbol in our .dynbss section, which will
5763 1.1 christos become part of the .bss section of the executable. There will be
5764 1.1 christos an entry for this symbol in the .dynsym section. The dynamic
5765 1.1 christos object will contain position independent code, so all references
5766 1.1 christos from the dynamic object to this symbol will go through the global
5767 1.1 christos offset table. The dynamic linker will use the .dynsym entry to
5768 1.1 christos determine the address it must put in the global offset table, so
5769 1.1 christos both the dynamic object and the regular object will refer to the
5770 1.1 christos same memory location for the variable.
5771 1.1 christos
5772 1.1 christos Of course, if the symbol is referenced using SDAREL relocs, we
5773 1.1 christos must instead allocate it in .sbss. */
5774 1.1 christos
5775 1.1 christos if (ppc_elf_hash_entry (h)->has_sda_refs)
5776 1.1 christos s = htab->dynsbss;
5777 1.1 christos else
5778 1.1 christos s = htab->dynbss;
5779 1.1 christos BFD_ASSERT (s != NULL);
5780 1.1 christos
5781 1.1 christos /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5782 1.1 christos copy the initial value out of the dynamic object and into the
5783 1.1 christos runtime process image. We need to remember the offset into the
5784 1.1 christos .rela.bss section we are going to use. */
5785 1.1 christos if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5786 1.3 christos {
5787 1.1 christos asection *srel;
5788 1.1 christos
5789 1.1 christos if (ppc_elf_hash_entry (h)->has_sda_refs)
5790 1.1 christos srel = htab->relsbss;
5791 1.1 christos else
5792 1.1 christos srel = htab->relbss;
5793 1.1 christos BFD_ASSERT (srel != NULL);
5794 1.1 christos srel->size += sizeof (Elf32_External_Rela);
5795 1.1 christos h->needs_copy = 1;
5796 1.1 christos }
5797 1.1 christos
5798 1.1 christos return _bfd_elf_adjust_dynamic_copy (info, h, s);
5799 1.1 christos }
5800 1.1 christos
5801 1.1 christos /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5803 1.1 christos xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5804 1.1 christos specifying the addend on the plt relocation. For -fpic code, the sym
5805 1.1 christos is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5806 1.6 christos xxxxxxxx.got2.plt_pic32.<callee>. */
5807 1.1 christos
5808 1.1 christos static bfd_boolean
5809 1.1 christos add_stub_sym (struct plt_entry *ent,
5810 1.1 christos struct elf_link_hash_entry *h,
5811 1.1 christos struct bfd_link_info *info)
5812 1.1 christos {
5813 1.1 christos struct elf_link_hash_entry *sh;
5814 1.1 christos size_t len1, len2, len3;
5815 1.1 christos char *name;
5816 1.1 christos const char *stub;
5817 1.1 christos struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5818 1.1 christos
5819 1.1 christos if (bfd_link_pic (info))
5820 1.1 christos stub = ".plt_pic32.";
5821 1.1 christos else
5822 1.1 christos stub = ".plt_call32.";
5823 1.1 christos
5824 1.1 christos len1 = strlen (h->root.root.string);
5825 1.1 christos len2 = strlen (stub);
5826 1.1 christos len3 = 0;
5827 1.1 christos if (ent->sec)
5828 1.1 christos len3 = strlen (ent->sec->name);
5829 1.1 christos name = bfd_malloc (len1 + len2 + len3 + 9);
5830 1.1 christos if (name == NULL)
5831 1.1 christos return FALSE;
5832 1.1 christos sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5833 1.1 christos if (ent->sec)
5834 1.1 christos memcpy (name + 8, ent->sec->name, len3);
5835 1.1 christos memcpy (name + 8 + len3, stub, len2);
5836 1.1 christos memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5837 1.5 christos sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5838 1.1 christos if (sh == NULL)
5839 1.1 christos return FALSE;
5840 1.1 christos if (sh->root.type == bfd_link_hash_new)
5841 1.1 christos {
5842 1.1 christos sh->root.type = bfd_link_hash_defined;
5843 1.1 christos sh->root.u.def.section = htab->glink;
5844 1.1 christos sh->root.u.def.value = ent->glink_offset;
5845 1.1 christos sh->ref_regular = 1;
5846 1.1 christos sh->def_regular = 1;
5847 1.1 christos sh->ref_regular_nonweak = 1;
5848 1.1 christos sh->forced_local = 1;
5849 1.1 christos sh->non_elf = 0;
5850 1.1 christos sh->root.linker_def = 1;
5851 1.1 christos }
5852 1.1 christos return TRUE;
5853 1.1 christos }
5854 1.1 christos
5855 1.1 christos /* Allocate NEED contiguous space in .got, and return the offset.
5856 1.1 christos Handles allocation of the got header when crossing 32k. */
5857 1.1 christos
5858 1.1 christos static bfd_vma
5859 1.1 christos allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5860 1.1 christos {
5861 1.1 christos bfd_vma where;
5862 1.1 christos unsigned int max_before_header;
5863 1.1 christos
5864 1.1 christos if (htab->plt_type == PLT_VXWORKS)
5865 1.1 christos {
5866 1.1 christos where = htab->got->size;
5867 1.1 christos htab->got->size += need;
5868 1.1 christos }
5869 1.1 christos else
5870 1.1 christos {
5871 1.1 christos max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5872 1.1 christos if (need <= htab->got_gap)
5873 1.1 christos {
5874 1.1 christos where = max_before_header - htab->got_gap;
5875 1.1 christos htab->got_gap -= need;
5876 1.1 christos }
5877 1.1 christos else
5878 1.1 christos {
5879 1.1 christos if (htab->got->size + need > max_before_header
5880 1.1 christos && htab->got->size <= max_before_header)
5881 1.1 christos {
5882 1.1 christos htab->got_gap = max_before_header - htab->got->size;
5883 1.1 christos htab->got->size = max_before_header + htab->got_header_size;
5884 1.1 christos }
5885 1.1 christos where = htab->got->size;
5886 1.1 christos htab->got->size += need;
5887 1.1 christos }
5888 1.1 christos }
5889 1.1 christos return where;
5890 1.1 christos }
5891 1.1 christos
5892 1.1 christos /* Allocate space in associated reloc sections for dynamic relocs. */
5893 1.1 christos
5894 1.1 christos static bfd_boolean
5895 1.1 christos allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5896 1.1 christos {
5897 1.1 christos struct bfd_link_info *info = inf;
5898 1.1 christos struct ppc_elf_link_hash_entry *eh;
5899 1.1 christos struct ppc_elf_link_hash_table *htab;
5900 1.1 christos struct elf_dyn_relocs *p;
5901 1.1 christos
5902 1.1 christos if (h->root.type == bfd_link_hash_indirect)
5903 1.1 christos return TRUE;
5904 1.1 christos
5905 1.1 christos htab = ppc_elf_hash_table (info);
5906 1.1 christos if (htab->elf.dynamic_sections_created
5907 1.1 christos || h->type == STT_GNU_IFUNC)
5908 1.1 christos {
5909 1.1 christos struct plt_entry *ent;
5910 1.1 christos bfd_boolean doneone = FALSE;
5911 1.1 christos bfd_vma plt_offset = 0, glink_offset = 0;
5912 1.1 christos bfd_boolean dyn;
5913 1.1 christos
5914 1.1 christos for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5915 1.6 christos if (ent->plt.refcount > 0)
5916 1.1 christos {
5917 1.1 christos /* Make sure this symbol is output as a dynamic symbol. */
5918 1.1 christos if (h->dynindx == -1
5919 1.1 christos && !h->forced_local
5920 1.1 christos && !h->def_regular
5921 1.1 christos && htab->elf.dynamic_sections_created)
5922 1.1 christos {
5923 1.1 christos if (! bfd_elf_link_record_dynamic_symbol (info, h))
5924 1.1 christos return FALSE;
5925 1.1 christos }
5926 1.1 christos
5927 1.1 christos dyn = htab->elf.dynamic_sections_created;
5928 1.1 christos if (bfd_link_pic (info)
5929 1.1 christos || h->type == STT_GNU_IFUNC
5930 1.1 christos || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5931 1.1 christos {
5932 1.1 christos asection *s = htab->plt;
5933 1.6 christos if (!dyn || h->dynindx == -1)
5934 1.1 christos s = htab->iplt;
5935 1.1 christos
5936 1.1 christos if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
5937 1.1 christos {
5938 1.3 christos if (!doneone)
5939 1.1 christos {
5940 1.1 christos plt_offset = s->size;
5941 1.1 christos s->size += 4;
5942 1.6 christos }
5943 1.1 christos ent->plt.offset = plt_offset;
5944 1.1 christos
5945 1.1 christos s = htab->glink;
5946 1.1 christos if (!doneone || bfd_link_pic (info))
5947 1.1 christos {
5948 1.1 christos glink_offset = s->size;
5949 1.1 christos s->size += GLINK_ENTRY_SIZE;
5950 1.1 christos if (h == htab->tls_get_addr
5951 1.3 christos && !htab->params->no_tls_get_addr_opt)
5952 1.1 christos s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
5953 1.1 christos }
5954 1.1 christos if (!doneone
5955 1.1 christos && !bfd_link_pic (info)
5956 1.1 christos && h->def_dynamic
5957 1.1 christos && !h->def_regular)
5958 1.1 christos {
5959 1.1 christos h->root.u.def.section = s;
5960 1.1 christos h->root.u.def.value = glink_offset;
5961 1.1 christos }
5962 1.1 christos ent->glink_offset = glink_offset;
5963 1.1 christos
5964 1.1 christos if (htab->params->emit_stub_syms
5965 1.1 christos && !add_stub_sym (ent, h, info))
5966 1.1 christos return FALSE;
5967 1.1 christos }
5968 1.1 christos else
5969 1.1 christos {
5970 1.1 christos if (!doneone)
5971 1.1 christos {
5972 1.1 christos /* If this is the first .plt entry, make room
5973 1.1 christos for the special first entry. */
5974 1.1 christos if (s->size == 0)
5975 1.1 christos s->size += htab->plt_initial_entry_size;
5976 1.1 christos
5977 1.1 christos /* The PowerPC PLT is actually composed of two
5978 1.1 christos parts, the first part is 2 words (for a load
5979 1.1 christos and a jump), and then there is a remaining
5980 1.1 christos word available at the end. */
5981 1.6 christos plt_offset = (htab->plt_initial_entry_size
5982 1.1 christos + (htab->plt_slot_size
5983 1.1 christos * ((s->size
5984 1.1 christos - htab->plt_initial_entry_size)
5985 1.1 christos / htab->plt_entry_size)));
5986 1.1 christos
5987 1.1 christos /* If this symbol is not defined in a regular
5988 1.1 christos file, and we are not generating a shared
5989 1.1 christos library, then set the symbol to this location
5990 1.1 christos in the .plt. This is to avoid text
5991 1.1 christos relocations, and is required to make
5992 1.1 christos function pointers compare as equal between
5993 1.1 christos the normal executable and the shared library. */
5994 1.1 christos if (! bfd_link_pic (info)
5995 1.1 christos && h->def_dynamic
5996 1.1 christos && !h->def_regular)
5997 1.1 christos {
5998 1.1 christos h->root.u.def.section = s;
5999 1.1 christos h->root.u.def.value = plt_offset;
6000 1.1 christos }
6001 1.1 christos
6002 1.1 christos /* Make room for this entry. */
6003 1.1 christos s->size += htab->plt_entry_size;
6004 1.1 christos /* After the 8192nd entry, room for two entries
6005 1.1 christos is allocated. */
6006 1.1 christos if (htab->plt_type == PLT_OLD
6007 1.1 christos && (s->size - htab->plt_initial_entry_size)
6008 1.1 christos / htab->plt_entry_size
6009 1.1 christos > PLT_NUM_SINGLE_ENTRIES)
6010 1.1 christos s->size += htab->plt_entry_size;
6011 1.1 christos }
6012 1.1 christos ent->plt.offset = plt_offset;
6013 1.1 christos }
6014 1.1 christos
6015 1.6 christos /* We also need to make an entry in the .rela.plt section. */
6016 1.1 christos if (!doneone)
6017 1.1 christos {
6018 1.1 christos if (!htab->elf.dynamic_sections_created
6019 1.1 christos || h->dynindx == -1)
6020 1.1 christos htab->reliplt->size += sizeof (Elf32_External_Rela);
6021 1.1 christos else
6022 1.1 christos {
6023 1.1 christos htab->relplt->size += sizeof (Elf32_External_Rela);
6024 1.1 christos
6025 1.1 christos if (htab->plt_type == PLT_VXWORKS)
6026 1.1 christos {
6027 1.1 christos /* Allocate space for the unloaded relocations. */
6028 1.1 christos if (!bfd_link_pic (info)
6029 1.1 christos && htab->elf.dynamic_sections_created)
6030 1.1 christos {
6031 1.1 christos if (ent->plt.offset
6032 1.1 christos == (bfd_vma) htab->plt_initial_entry_size)
6033 1.1 christos {
6034 1.1 christos htab->srelplt2->size
6035 1.1 christos += (sizeof (Elf32_External_Rela)
6036 1.1 christos * VXWORKS_PLTRESOLVE_RELOCS);
6037 1.1 christos }
6038 1.1 christos
6039 1.1 christos htab->srelplt2->size
6040 1.1 christos += (sizeof (Elf32_External_Rela)
6041 1.1 christos * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
6042 1.1 christos }
6043 1.1 christos
6044 1.1 christos /* Every PLT entry has an associated GOT entry in
6045 1.1 christos .got.plt. */
6046 1.1 christos htab->sgotplt->size += 4;
6047 1.1 christos }
6048 1.1 christos }
6049 1.1 christos doneone = TRUE;
6050 1.1 christos }
6051 1.1 christos }
6052 1.1 christos else
6053 1.1 christos ent->plt.offset = (bfd_vma) -1;
6054 1.1 christos }
6055 1.1 christos else
6056 1.1 christos ent->plt.offset = (bfd_vma) -1;
6057 1.1 christos
6058 1.5 christos if (!doneone)
6059 1.5 christos {
6060 1.5 christos h->plt.plist = NULL;
6061 1.5 christos h->needs_plt = 0;
6062 1.5 christos }
6063 1.5 christos }
6064 1.5 christos else
6065 1.1 christos {
6066 1.1 christos h->plt.plist = NULL;
6067 1.1 christos h->needs_plt = 0;
6068 1.1 christos }
6069 1.1 christos
6070 1.1 christos eh = (struct ppc_elf_link_hash_entry *) h;
6071 1.1 christos if (eh->elf.got.refcount > 0
6072 1.1 christos || (ELIMINATE_COPY_RELOCS
6073 1.1 christos && !eh->elf.def_regular
6074 1.1 christos && eh->elf.protected_def
6075 1.1 christos && eh->has_addr16_ha
6076 1.1 christos && eh->has_addr16_lo
6077 1.1 christos && htab->params->pic_fixup > 0))
6078 1.1 christos {
6079 1.1 christos bfd_boolean dyn;
6080 1.1 christos unsigned int need;
6081 1.1 christos
6082 1.1 christos /* Make sure this symbol is output as a dynamic symbol. */
6083 1.1 christos if (eh->elf.dynindx == -1
6084 1.1 christos && !eh->elf.forced_local
6085 1.1 christos && eh->elf.type != STT_GNU_IFUNC
6086 1.1 christos && htab->elf.dynamic_sections_created)
6087 1.1 christos {
6088 1.1 christos if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
6089 1.1 christos return FALSE;
6090 1.1 christos }
6091 1.1 christos
6092 1.1 christos need = 0;
6093 1.1 christos if ((eh->tls_mask & TLS_TLS) != 0)
6094 1.1 christos {
6095 1.1 christos if ((eh->tls_mask & TLS_LD) != 0)
6096 1.1 christos {
6097 1.1 christos if (!eh->elf.def_dynamic)
6098 1.1 christos /* We'll just use htab->tlsld_got.offset. This should
6099 1.1 christos always be the case. It's a little odd if we have
6100 1.1 christos a local dynamic reloc against a non-local symbol. */
6101 1.1 christos htab->tlsld_got.refcount += 1;
6102 1.1 christos else
6103 1.1 christos need += 8;
6104 1.1 christos }
6105 1.1 christos if ((eh->tls_mask & TLS_GD) != 0)
6106 1.1 christos need += 8;
6107 1.6 christos if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
6108 1.1 christos need += 4;
6109 1.1 christos if ((eh->tls_mask & TLS_DTPREL) != 0)
6110 1.1 christos need += 4;
6111 1.1 christos }
6112 1.1 christos else
6113 1.1 christos need += 4;
6114 1.1 christos if (need == 0)
6115 1.1 christos eh->elf.got.offset = (bfd_vma) -1;
6116 1.1 christos else
6117 1.1 christos {
6118 1.1 christos eh->elf.got.offset = allocate_got (htab, need);
6119 1.1 christos dyn = htab->elf.dynamic_sections_created;
6120 1.1 christos if ((bfd_link_pic (info)
6121 1.1 christos || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
6122 1.1 christos && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
6123 1.1 christos || eh->elf.root.type != bfd_link_hash_undefweak))
6124 1.1 christos {
6125 1.1 christos asection *rsec = htab->relgot;
6126 1.1 christos
6127 1.1 christos if (eh->elf.type == STT_GNU_IFUNC)
6128 1.1 christos rsec = htab->reliplt;
6129 1.1 christos /* All the entries we allocated need relocs.
6130 1.1 christos Except LD only needs one. */
6131 1.1 christos if ((eh->tls_mask & TLS_LD) != 0
6132 1.1 christos && eh->elf.def_dynamic)
6133 1.1 christos need -= 4;
6134 1.1 christos rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
6135 1.1 christos }
6136 1.1 christos }
6137 1.1 christos }
6138 1.6 christos else
6139 1.1 christos eh->elf.got.offset = (bfd_vma) -1;
6140 1.1 christos
6141 1.1 christos if (eh->dyn_relocs == NULL
6142 1.1 christos || !htab->elf.dynamic_sections_created)
6143 1.1 christos return TRUE;
6144 1.1 christos
6145 1.1 christos /* In the shared -Bsymbolic case, discard space allocated for
6146 1.1 christos dynamic pc-relative relocs against symbols which turn out to be
6147 1.1 christos defined in regular objects. For the normal shared case, discard
6148 1.1 christos space for relocs that have become local due to symbol visibility
6149 1.1 christos changes. */
6150 1.1 christos
6151 1.1 christos if (bfd_link_pic (info))
6152 1.1 christos {
6153 1.1 christos /* Relocs that use pc_count are those that appear on a call insn,
6154 1.1 christos or certain REL relocs (see must_be_dyn_reloc) that can be
6155 1.1 christos generated via assembly. We want calls to protected symbols to
6156 1.1 christos resolve directly to the function rather than going via the plt.
6157 1.1 christos If people want function pointer comparisons to work as expected
6158 1.1 christos then they should avoid writing weird assembly. */
6159 1.1 christos if (SYMBOL_CALLS_LOCAL (info, h))
6160 1.1 christos {
6161 1.1 christos struct elf_dyn_relocs **pp;
6162 1.1 christos
6163 1.1 christos for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6164 1.1 christos {
6165 1.1 christos p->count -= p->pc_count;
6166 1.1 christos p->pc_count = 0;
6167 1.1 christos if (p->count == 0)
6168 1.1 christos *pp = p->next;
6169 1.1 christos else
6170 1.1 christos pp = &p->next;
6171 1.1 christos }
6172 1.1 christos }
6173 1.1 christos
6174 1.1 christos if (htab->is_vxworks)
6175 1.1 christos {
6176 1.1 christos struct elf_dyn_relocs **pp;
6177 1.1 christos
6178 1.1 christos for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6179 1.1 christos {
6180 1.1 christos if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
6181 1.1 christos *pp = p->next;
6182 1.1 christos else
6183 1.1 christos pp = &p->next;
6184 1.1 christos }
6185 1.1 christos }
6186 1.1 christos
6187 1.1 christos /* Discard relocs on undefined symbols that must be local. */
6188 1.1 christos if (eh->dyn_relocs != NULL
6189 1.1 christos && h->root.type == bfd_link_hash_undefined
6190 1.1 christos && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6191 1.1 christos || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6192 1.1 christos eh->dyn_relocs = NULL;
6193 1.1 christos
6194 1.1 christos /* Also discard relocs on undefined weak syms with non-default
6195 1.1 christos visibility. */
6196 1.1 christos if (eh->dyn_relocs != NULL
6197 1.1 christos && h->root.type == bfd_link_hash_undefweak)
6198 1.1 christos {
6199 1.1 christos if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
6200 1.1 christos eh->dyn_relocs = NULL;
6201 1.1 christos
6202 1.1 christos /* Make sure undefined weak symbols are output as a dynamic
6203 1.1 christos symbol in PIEs. */
6204 1.1 christos else if (h->dynindx == -1
6205 1.1 christos && !h->forced_local
6206 1.1 christos && !h->def_regular)
6207 1.5 christos {
6208 1.5 christos if (! bfd_elf_link_record_dynamic_symbol (info, h))
6209 1.5 christos return FALSE;
6210 1.5 christos }
6211 1.5 christos }
6212 1.1 christos }
6213 1.1 christos else if (ELIMINATE_COPY_RELOCS)
6214 1.1 christos {
6215 1.1 christos /* For the non-shared case, discard space for relocs against
6216 1.1 christos symbols which turn out to need copy relocs or are not
6217 1.1 christos dynamic. */
6218 1.1 christos
6219 1.1 christos if (!h->non_got_ref
6220 1.1 christos && !h->def_regular
6221 1.1 christos && !(h->protected_def
6222 1.1 christos && eh->has_addr16_ha
6223 1.1 christos && eh->has_addr16_lo
6224 1.1 christos && htab->params->pic_fixup > 0))
6225 1.1 christos {
6226 1.1 christos /* Make sure this symbol is output as a dynamic symbol.
6227 1.1 christos Undefined weak syms won't yet be marked as dynamic. */
6228 1.1 christos if (h->dynindx == -1
6229 1.1 christos && !h->forced_local)
6230 1.1 christos {
6231 1.1 christos if (! bfd_elf_link_record_dynamic_symbol (info, h))
6232 1.1 christos return FALSE;
6233 1.1 christos }
6234 1.1 christos
6235 1.1 christos /* If that succeeded, we know we'll be keeping all the
6236 1.1 christos relocs. */
6237 1.1 christos if (h->dynindx != -1)
6238 1.1 christos goto keep;
6239 1.1 christos }
6240 1.1 christos
6241 1.1 christos eh->dyn_relocs = NULL;
6242 1.1 christos
6243 1.1 christos keep: ;
6244 1.1 christos }
6245 1.1 christos
6246 1.1 christos /* Finally, allocate space. */
6247 1.1 christos for (p = eh->dyn_relocs; p != NULL; p = p->next)
6248 1.1 christos {
6249 1.1 christos asection *sreloc = elf_section_data (p->sec)->sreloc;
6250 1.1 christos if (eh->elf.type == STT_GNU_IFUNC)
6251 1.1 christos sreloc = htab->reliplt;
6252 1.1 christos sreloc->size += p->count * sizeof (Elf32_External_Rela);
6253 1.1 christos }
6254 1.1 christos
6255 1.1 christos return TRUE;
6256 1.1 christos }
6257 1.1 christos
6258 1.1 christos /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6259 1.1 christos read-only sections. */
6260 1.1 christos
6261 1.1 christos static bfd_boolean
6262 1.1 christos maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
6263 1.1 christos {
6264 1.1 christos if (h->root.type == bfd_link_hash_indirect)
6265 1.1 christos return TRUE;
6266 1.1 christos
6267 1.1 christos if (readonly_dynrelocs (h))
6268 1.1 christos {
6269 1.1 christos ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
6270 1.1 christos
6271 1.1 christos /* Not an error, just cut short the traversal. */
6272 1.1 christos return FALSE;
6273 1.1 christos }
6274 1.1 christos return TRUE;
6275 1.1 christos }
6276 1.1 christos
6277 1.1 christos static const unsigned char glink_eh_frame_cie[] =
6278 1.1 christos {
6279 1.1 christos 0, 0, 0, 16, /* length. */
6280 1.1 christos 0, 0, 0, 0, /* id. */
6281 1.3 christos 1, /* CIE version. */
6282 1.1 christos 'z', 'R', 0, /* Augmentation string. */
6283 1.1 christos 4, /* Code alignment. */
6284 1.1 christos 0x7c, /* Data alignment. */
6285 1.1 christos 65, /* RA reg. */
6286 1.1 christos 1, /* Augmentation size. */
6287 1.1 christos DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6288 1.1 christos DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6289 1.1 christos };
6290 1.1 christos
6291 1.1 christos /* Set the sizes of the dynamic sections. */
6292 1.1 christos
6293 1.1 christos static bfd_boolean
6294 1.1 christos ppc_elf_size_dynamic_sections (bfd *output_bfd,
6295 1.1 christos struct bfd_link_info *info)
6296 1.1 christos {
6297 1.1 christos struct ppc_elf_link_hash_table *htab;
6298 1.1 christos asection *s;
6299 1.6 christos bfd_boolean relocs;
6300 1.1 christos bfd *ibfd;
6301 1.1 christos
6302 1.1 christos #ifdef DEBUG
6303 1.1 christos fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6304 1.1 christos #endif
6305 1.1 christos
6306 1.1 christos htab = ppc_elf_hash_table (info);
6307 1.1 christos BFD_ASSERT (htab->elf.dynobj != NULL);
6308 1.1 christos
6309 1.1 christos if (elf_hash_table (info)->dynamic_sections_created)
6310 1.1 christos {
6311 1.1 christos /* Set the contents of the .interp section to the interpreter. */
6312 1.1 christos if (bfd_link_executable (info) && !info->nointerp)
6313 1.1 christos {
6314 1.1 christos s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6315 1.3 christos BFD_ASSERT (s != NULL);
6316 1.1 christos s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6317 1.1 christos s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6318 1.1 christos }
6319 1.1 christos }
6320 1.1 christos
6321 1.1 christos if (htab->plt_type == PLT_OLD)
6322 1.1 christos htab->got_header_size = 16;
6323 1.1 christos else if (htab->plt_type == PLT_NEW)
6324 1.1 christos htab->got_header_size = 12;
6325 1.1 christos
6326 1.1 christos /* Set up .got offsets for local syms, and space for local dynamic
6327 1.1 christos relocs. */
6328 1.1 christos for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
6329 1.1 christos {
6330 1.1 christos bfd_signed_vma *local_got;
6331 1.1 christos bfd_signed_vma *end_local_got;
6332 1.1 christos struct plt_entry **local_plt;
6333 1.1 christos struct plt_entry **end_local_plt;
6334 1.1 christos char *lgot_masks;
6335 1.1 christos bfd_size_type locsymcount;
6336 1.1 christos Elf_Internal_Shdr *symtab_hdr;
6337 1.1 christos
6338 1.1 christos if (!is_ppc_elf (ibfd))
6339 1.1 christos continue;
6340 1.1 christos
6341 1.1 christos for (s = ibfd->sections; s != NULL; s = s->next)
6342 1.1 christos {
6343 1.1 christos struct ppc_dyn_relocs *p;
6344 1.1 christos
6345 1.1 christos for (p = ((struct ppc_dyn_relocs *)
6346 1.1 christos elf_section_data (s)->local_dynrel);
6347 1.1 christos p != NULL;
6348 1.1 christos p = p->next)
6349 1.1 christos {
6350 1.1 christos if (!bfd_is_abs_section (p->sec)
6351 1.1 christos && bfd_is_abs_section (p->sec->output_section))
6352 1.1 christos {
6353 1.1 christos /* Input section has been discarded, either because
6354 1.1 christos it is a copy of a linkonce section or due to
6355 1.1 christos linker script /DISCARD/, so we'll be discarding
6356 1.1 christos the relocs too. */
6357 1.1 christos }
6358 1.1 christos else if (htab->is_vxworks
6359 1.1 christos && strcmp (p->sec->output_section->name,
6360 1.1 christos ".tls_vars") == 0)
6361 1.1 christos {
6362 1.1 christos /* Relocations in vxworks .tls_vars sections are
6363 1.1 christos handled specially by the loader. */
6364 1.1 christos }
6365 1.1 christos else if (p->count != 0)
6366 1.1 christos {
6367 1.1 christos asection *sreloc = elf_section_data (p->sec)->sreloc;
6368 1.1 christos if (p->ifunc)
6369 1.1 christos sreloc = htab->reliplt;
6370 1.1 christos sreloc->size += p->count * sizeof (Elf32_External_Rela);
6371 1.1 christos if ((p->sec->output_section->flags
6372 1.1 christos & (SEC_READONLY | SEC_ALLOC))
6373 1.1 christos == (SEC_READONLY | SEC_ALLOC))
6374 1.1 christos info->flags |= DF_TEXTREL;
6375 1.1 christos }
6376 1.1 christos }
6377 1.1 christos }
6378 1.1 christos
6379 1.1 christos local_got = elf_local_got_refcounts (ibfd);
6380 1.1 christos if (!local_got)
6381 1.1 christos continue;
6382 1.1 christos
6383 1.1 christos symtab_hdr = &elf_symtab_hdr (ibfd);
6384 1.1 christos locsymcount = symtab_hdr->sh_info;
6385 1.1 christos end_local_got = local_got + locsymcount;
6386 1.1 christos local_plt = (struct plt_entry **) end_local_got;
6387 1.1 christos end_local_plt = local_plt + locsymcount;
6388 1.1 christos lgot_masks = (char *) end_local_plt;
6389 1.1 christos
6390 1.1 christos for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6391 1.1 christos if (*local_got > 0)
6392 1.1 christos {
6393 1.1 christos unsigned int need = 0;
6394 1.1 christos if ((*lgot_masks & TLS_TLS) != 0)
6395 1.1 christos {
6396 1.1 christos if ((*lgot_masks & TLS_GD) != 0)
6397 1.1 christos need += 8;
6398 1.1 christos if ((*lgot_masks & TLS_LD) != 0)
6399 1.6 christos htab->tlsld_got.refcount += 1;
6400 1.1 christos if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6401 1.1 christos need += 4;
6402 1.1 christos if ((*lgot_masks & TLS_DTPREL) != 0)
6403 1.1 christos need += 4;
6404 1.1 christos }
6405 1.1 christos else
6406 1.1 christos need += 4;
6407 1.1 christos if (need == 0)
6408 1.1 christos *local_got = (bfd_vma) -1;
6409 1.1 christos else
6410 1.1 christos {
6411 1.1 christos *local_got = allocate_got (htab, need);
6412 1.1 christos if (bfd_link_pic (info))
6413 1.1 christos {
6414 1.1 christos asection *srel = htab->relgot;
6415 1.1 christos if ((*lgot_masks & PLT_IFUNC) != 0)
6416 1.1 christos srel = htab->reliplt;
6417 1.1 christos srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6418 1.1 christos }
6419 1.1 christos }
6420 1.1 christos }
6421 1.1 christos else
6422 1.1 christos *local_got = (bfd_vma) -1;
6423 1.1 christos
6424 1.1 christos if (htab->is_vxworks)
6425 1.1 christos continue;
6426 1.1 christos
6427 1.1 christos /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6428 1.1 christos for (; local_plt < end_local_plt; ++local_plt)
6429 1.1 christos {
6430 1.1 christos struct plt_entry *ent;
6431 1.1 christos bfd_boolean doneone = FALSE;
6432 1.1 christos bfd_vma plt_offset = 0, glink_offset = 0;
6433 1.1 christos
6434 1.6 christos for (ent = *local_plt; ent != NULL; ent = ent->next)
6435 1.1 christos if (ent->plt.refcount > 0)
6436 1.1 christos {
6437 1.1 christos s = htab->iplt;
6438 1.1 christos
6439 1.1 christos if (!doneone)
6440 1.1 christos {
6441 1.1 christos plt_offset = s->size;
6442 1.1 christos s->size += 4;
6443 1.1 christos }
6444 1.1 christos ent->plt.offset = plt_offset;
6445 1.1 christos
6446 1.1 christos s = htab->glink;
6447 1.1 christos if (!doneone || bfd_link_pic (info))
6448 1.1 christos {
6449 1.1 christos glink_offset = s->size;
6450 1.1 christos s->size += GLINK_ENTRY_SIZE;
6451 1.1 christos }
6452 1.1 christos ent->glink_offset = glink_offset;
6453 1.1 christos
6454 1.1 christos if (!doneone)
6455 1.1 christos {
6456 1.1 christos htab->reliplt->size += sizeof (Elf32_External_Rela);
6457 1.1 christos doneone = TRUE;
6458 1.6 christos }
6459 1.1 christos }
6460 1.1 christos else
6461 1.1 christos ent->plt.offset = (bfd_vma) -1;
6462 1.1 christos }
6463 1.1 christos }
6464 1.1 christos
6465 1.1 christos /* Allocate space for global sym dynamic relocs. */
6466 1.1 christos elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6467 1.1 christos
6468 1.1 christos if (htab->tlsld_got.refcount > 0)
6469 1.1 christos {
6470 1.1 christos htab->tlsld_got.offset = allocate_got (htab, 8);
6471 1.1 christos if (bfd_link_pic (info))
6472 1.1 christos htab->relgot->size += sizeof (Elf32_External_Rela);
6473 1.1 christos }
6474 1.1 christos else
6475 1.1 christos htab->tlsld_got.offset = (bfd_vma) -1;
6476 1.1 christos
6477 1.1 christos if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
6478 1.1 christos {
6479 1.1 christos unsigned int g_o_t = 32768;
6480 1.1 christos
6481 1.1 christos /* If we haven't allocated the header, do so now. When we get here,
6482 1.6 christos for old plt/got the got size will be 0 to 32764 (not allocated),
6483 1.1 christos or 32780 to 65536 (header allocated). For new plt/got, the
6484 1.1 christos corresponding ranges are 0 to 32768 and 32780 to 65536. */
6485 1.3 christos if (htab->got->size <= 32768)
6486 1.3 christos {
6487 1.3 christos g_o_t = htab->got->size;
6488 1.3 christos if (htab->plt_type == PLT_OLD)
6489 1.3 christos g_o_t += 4;
6490 1.3 christos htab->got->size += htab->got_header_size;
6491 1.3 christos }
6492 1.3 christos
6493 1.3 christos htab->elf.hgot->root.u.def.value = g_o_t;
6494 1.3 christos }
6495 1.3 christos if (bfd_link_pic (info))
6496 1.3 christos {
6497 1.3 christos struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6498 1.1 christos
6499 1.1 christos sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6500 1.1 christos sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6501 1.1 christos }
6502 1.1 christos if (info->emitrelocations)
6503 1.1 christos {
6504 1.1 christos struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6505 1.1 christos
6506 1.1 christos if (sda != NULL && sda->ref_regular)
6507 1.1 christos sda->root.u.def.section->flags |= SEC_KEEP;
6508 1.3 christos sda = htab->sdata[1].sym;
6509 1.3 christos if (sda != NULL && sda->ref_regular)
6510 1.1 christos sda->root.u.def.section->flags |= SEC_KEEP;
6511 1.1 christos }
6512 1.3 christos
6513 1.1 christos if (htab->glink != NULL
6514 1.1 christos && htab->glink->size != 0
6515 1.1 christos && htab->elf.dynamic_sections_created)
6516 1.1 christos {
6517 1.1 christos htab->glink_pltresolve = htab->glink->size;
6518 1.1 christos /* Space for the branch table. */
6519 1.1 christos htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6520 1.1 christos /* Pad out to align the start of PLTresolve. */
6521 1.1 christos htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6522 1.1 christos ? 63 : 15);
6523 1.1 christos htab->glink->size += GLINK_PLTRESOLVE;
6524 1.1 christos
6525 1.1 christos if (htab->params->emit_stub_syms)
6526 1.1 christos {
6527 1.1 christos struct elf_link_hash_entry *sh;
6528 1.1 christos sh = elf_link_hash_lookup (&htab->elf, "__glink",
6529 1.5 christos TRUE, FALSE, FALSE);
6530 1.1 christos if (sh == NULL)
6531 1.1 christos return FALSE;
6532 1.1 christos if (sh->root.type == bfd_link_hash_new)
6533 1.1 christos {
6534 1.1 christos sh->root.type = bfd_link_hash_defined;
6535 1.1 christos sh->root.u.def.section = htab->glink;
6536 1.1 christos sh->root.u.def.value = htab->glink_pltresolve;
6537 1.1 christos sh->ref_regular = 1;
6538 1.1 christos sh->def_regular = 1;
6539 1.1 christos sh->ref_regular_nonweak = 1;
6540 1.1 christos sh->forced_local = 1;
6541 1.1 christos sh->non_elf = 0;
6542 1.1 christos sh->root.linker_def = 1;
6543 1.1 christos }
6544 1.1 christos sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6545 1.5 christos TRUE, FALSE, FALSE);
6546 1.1 christos if (sh == NULL)
6547 1.1 christos return FALSE;
6548 1.1 christos if (sh->root.type == bfd_link_hash_new)
6549 1.1 christos {
6550 1.1 christos sh->root.type = bfd_link_hash_defined;
6551 1.1 christos sh->root.u.def.section = htab->glink;
6552 1.1 christos sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6553 1.1 christos sh->ref_regular = 1;
6554 1.1 christos sh->def_regular = 1;
6555 1.1 christos sh->ref_regular_nonweak = 1;
6556 1.1 christos sh->forced_local = 1;
6557 1.1 christos sh->non_elf = 0;
6558 1.6 christos sh->root.linker_def = 1;
6559 1.1 christos }
6560 1.1 christos }
6561 1.1 christos }
6562 1.1 christos
6563 1.1 christos if (htab->glink != NULL
6564 1.1 christos && htab->glink->size != 0
6565 1.1 christos && htab->glink_eh_frame != NULL
6566 1.1 christos && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6567 1.1 christos && _bfd_elf_eh_frame_present (info))
6568 1.1 christos {
6569 1.1 christos s = htab->glink_eh_frame;
6570 1.1 christos s->size = sizeof (glink_eh_frame_cie) + 20;
6571 1.1 christos if (bfd_link_pic (info))
6572 1.1 christos {
6573 1.1 christos s->size += 4;
6574 1.1 christos if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6575 1.1 christos s->size += 4;
6576 1.1 christos }
6577 1.1 christos }
6578 1.1 christos
6579 1.1 christos /* We've now determined the sizes of the various dynamic sections.
6580 1.1 christos Allocate memory for them. */
6581 1.1 christos relocs = FALSE;
6582 1.1 christos for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6583 1.1 christos {
6584 1.1 christos bfd_boolean strip_section = TRUE;
6585 1.1 christos
6586 1.1 christos if ((s->flags & SEC_LINKER_CREATED) == 0)
6587 1.1 christos continue;
6588 1.1 christos
6589 1.1 christos if (s == htab->plt
6590 1.1 christos || s == htab->got)
6591 1.1 christos {
6592 1.1 christos /* We'd like to strip these sections if they aren't needed, but if
6593 1.3 christos we've exported dynamic symbols from them we must leave them.
6594 1.3 christos It's too late to tell BFD to get rid of the symbols. */
6595 1.3 christos if (htab->elf.hplt != NULL)
6596 1.3 christos strip_section = FALSE;
6597 1.3 christos /* Strip this section if we don't need it; see the
6598 1.1 christos comment below. */
6599 1.1 christos }
6600 1.3 christos else if (s == htab->iplt
6601 1.1 christos || s == htab->glink
6602 1.1 christos || s == htab->glink_eh_frame
6603 1.1 christos || s == htab->sgotplt
6604 1.1 christos || s == htab->sbss
6605 1.1 christos || s == htab->dynbss
6606 1.1 christos || s == htab->dynsbss)
6607 1.1 christos {
6608 1.1 christos /* Strip these too. */
6609 1.1 christos }
6610 1.1 christos else if (s == htab->sdata[0].section
6611 1.1 christos || s == htab->sdata[1].section)
6612 1.1 christos {
6613 1.1 christos strip_section = (s->flags & SEC_KEEP) == 0;
6614 1.1 christos }
6615 1.1 christos else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6616 1.1 christos ".rela"))
6617 1.1 christos {
6618 1.1 christos if (s->size != 0)
6619 1.1 christos {
6620 1.1 christos /* Remember whether there are any relocation sections. */
6621 1.1 christos relocs = TRUE;
6622 1.1 christos
6623 1.1 christos /* We use the reloc_count field as a counter if we need
6624 1.1 christos to copy relocs into the output file. */
6625 1.1 christos s->reloc_count = 0;
6626 1.1 christos }
6627 1.1 christos }
6628 1.1 christos else
6629 1.1 christos {
6630 1.1 christos /* It's not one of our sections, so don't allocate space. */
6631 1.1 christos continue;
6632 1.1 christos }
6633 1.1 christos
6634 1.1 christos if (s->size == 0 && strip_section)
6635 1.1 christos {
6636 1.1 christos /* If we don't need this section, strip it from the
6637 1.1 christos output file. This is mostly to handle .rela.bss and
6638 1.1 christos .rela.plt. We must create both sections in
6639 1.1 christos create_dynamic_sections, because they must be created
6640 1.1 christos before the linker maps input sections to output
6641 1.1 christos sections. The linker does that before
6642 1.1 christos adjust_dynamic_symbol is called, and it is that
6643 1.1 christos function which decides whether anything needs to go
6644 1.1 christos into these sections. */
6645 1.1 christos s->flags |= SEC_EXCLUDE;
6646 1.1 christos continue;
6647 1.1 christos }
6648 1.1 christos
6649 1.1 christos if ((s->flags & SEC_HAS_CONTENTS) == 0)
6650 1.1 christos continue;
6651 1.1 christos
6652 1.1 christos /* Allocate memory for the section contents. */
6653 1.1 christos s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6654 1.1 christos if (s->contents == NULL)
6655 1.6 christos return FALSE;
6656 1.1 christos }
6657 1.1 christos
6658 1.1 christos if (htab->elf.dynamic_sections_created)
6659 1.1 christos {
6660 1.1 christos /* Add some entries to the .dynamic section. We fill in the
6661 1.1 christos values later, in ppc_elf_finish_dynamic_sections, but we
6662 1.1 christos must add the entries now so that we get the correct size for
6663 1.1 christos the .dynamic section. The DT_DEBUG entry is filled in by the
6664 1.1 christos dynamic linker and used by the debugger. */
6665 1.1 christos #define add_dynamic_entry(TAG, VAL) \
6666 1.1 christos _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6667 1.1 christos
6668 1.1 christos if (bfd_link_executable (info))
6669 1.1 christos {
6670 1.3 christos if (!add_dynamic_entry (DT_DEBUG, 0))
6671 1.3 christos return FALSE;
6672 1.3 christos }
6673 1.1 christos
6674 1.1 christos if (htab->plt != NULL && htab->plt->size != 0)
6675 1.1 christos {
6676 1.3 christos if (!add_dynamic_entry (DT_PLTGOT, 0)
6677 1.1 christos || !add_dynamic_entry (DT_PLTRELSZ, 0)
6678 1.1 christos || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6679 1.1 christos || !add_dynamic_entry (DT_JMPREL, 0))
6680 1.1 christos return FALSE;
6681 1.1 christos }
6682 1.1 christos
6683 1.1 christos if (htab->plt_type == PLT_NEW
6684 1.1 christos && htab->glink != NULL
6685 1.1 christos && htab->glink->size != 0)
6686 1.1 christos {
6687 1.1 christos if (!add_dynamic_entry (DT_PPC_GOT, 0))
6688 1.1 christos return FALSE;
6689 1.1 christos if (!htab->params->no_tls_get_addr_opt
6690 1.1 christos && htab->tls_get_addr != NULL
6691 1.1 christos && htab->tls_get_addr->plt.plist != NULL
6692 1.1 christos && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6693 1.1 christos return FALSE;
6694 1.1 christos }
6695 1.1 christos
6696 1.1 christos if (relocs)
6697 1.1 christos {
6698 1.1 christos if (!add_dynamic_entry (DT_RELA, 0)
6699 1.1 christos || !add_dynamic_entry (DT_RELASZ, 0)
6700 1.1 christos || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6701 1.1 christos return FALSE;
6702 1.1 christos }
6703 1.1 christos
6704 1.1 christos /* If any dynamic relocs apply to a read-only section, then we
6705 1.1 christos need a DT_TEXTREL entry. */
6706 1.1 christos if ((info->flags & DF_TEXTREL) == 0)
6707 1.1 christos elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6708 1.1 christos info);
6709 1.1 christos
6710 1.1 christos if ((info->flags & DF_TEXTREL) != 0)
6711 1.1 christos {
6712 1.1 christos if (!add_dynamic_entry (DT_TEXTREL, 0))
6713 1.1 christos return FALSE;
6714 1.1 christos }
6715 1.1 christos if (htab->is_vxworks
6716 1.1 christos && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6717 1.1 christos return FALSE;
6718 1.1 christos }
6719 1.1 christos #undef add_dynamic_entry
6720 1.1 christos
6721 1.1 christos if (htab->glink_eh_frame != NULL
6722 1.1 christos && htab->glink_eh_frame->contents != NULL)
6723 1.1 christos {
6724 1.1 christos unsigned char *p = htab->glink_eh_frame->contents;
6725 1.1 christos bfd_vma val;
6726 1.1 christos
6727 1.1 christos memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6728 1.1 christos /* CIE length (rewrite in case little-endian). */
6729 1.1 christos bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6730 1.1 christos p += sizeof (glink_eh_frame_cie);
6731 1.1 christos /* FDE length. */
6732 1.1 christos val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6733 1.1 christos bfd_put_32 (htab->elf.dynobj, val, p);
6734 1.6 christos p += 4;
6735 1.1 christos /* CIE pointer. */
6736 1.1 christos val = p - htab->glink_eh_frame->contents;
6737 1.1 christos bfd_put_32 (htab->elf.dynobj, val, p);
6738 1.1 christos p += 4;
6739 1.1 christos /* Offset to .glink. Set later. */
6740 1.1 christos p += 4;
6741 1.1 christos /* .glink size. */
6742 1.1 christos bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6743 1.1 christos p += 4;
6744 1.1 christos /* Augmentation. */
6745 1.1 christos p += 1;
6746 1.1 christos
6747 1.1 christos if (bfd_link_pic (info)
6748 1.1 christos && htab->elf.dynamic_sections_created)
6749 1.1 christos {
6750 1.1 christos bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6751 1.1 christos if (adv < 64)
6752 1.1 christos *p++ = DW_CFA_advance_loc + adv;
6753 1.1 christos else if (adv < 256)
6754 1.1 christos {
6755 1.1 christos *p++ = DW_CFA_advance_loc1;
6756 1.1 christos *p++ = adv;
6757 1.1 christos }
6758 1.1 christos else if (adv < 65536)
6759 1.1 christos {
6760 1.1 christos *p++ = DW_CFA_advance_loc2;
6761 1.1 christos bfd_put_16 (htab->elf.dynobj, adv, p);
6762 1.1 christos p += 2;
6763 1.1 christos }
6764 1.1 christos else
6765 1.1 christos {
6766 1.1 christos *p++ = DW_CFA_advance_loc4;
6767 1.1 christos bfd_put_32 (htab->elf.dynobj, adv, p);
6768 1.1 christos p += 4;
6769 1.1 christos }
6770 1.1 christos *p++ = DW_CFA_register;
6771 1.3 christos *p++ = 65;
6772 1.3 christos p++;
6773 1.3 christos *p++ = DW_CFA_advance_loc + 4;
6774 1.3 christos *p++ = DW_CFA_restore_extended;
6775 1.3 christos *p++ = 65;
6776 1.3 christos }
6777 1.3 christos BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6778 1.3 christos == htab->glink_eh_frame->size);
6779 1.3 christos }
6780 1.3 christos
6781 1.3 christos return TRUE;
6782 1.3 christos }
6783 1.3 christos
6784 1.3 christos /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6785 1.3 christos if it looks like nothing is using them. */
6786 1.3 christos
6787 1.3 christos static void
6788 1.3 christos maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6789 1.3 christos {
6790 1.3 christos struct elf_link_hash_entry *sda = lsect->sym;
6791 1.3 christos
6792 1.3 christos if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6793 1.3 christos {
6794 1.3 christos asection *s;
6795 1.3 christos
6796 1.3 christos s = bfd_get_section_by_name (output_bfd, lsect->name);
6797 1.3 christos if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6798 1.3 christos {
6799 1.3 christos s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6800 1.3 christos if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6801 1.3 christos {
6802 1.3 christos sda->def_regular = 0;
6803 1.3 christos /* This is somewhat magic. See elf_link_output_extsym. */
6804 1.3 christos sda->ref_dynamic = 1;
6805 1.3 christos sda->forced_local = 0;
6806 1.3 christos }
6807 1.3 christos }
6808 1.3 christos }
6809 1.3 christos }
6810 1.3 christos
6811 1.1 christos void
6812 1.1 christos ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6813 1.1 christos {
6814 1.1 christos struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6815 1.1 christos
6816 1.1 christos if (htab != NULL)
6817 1.1 christos {
6818 1.1 christos maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6819 1.1 christos maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6820 1.1 christos }
6821 1.1 christos }
6822 1.1 christos
6823 1.1 christos
6824 1.1 christos /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6825 1.1 christos
6826 1.1 christos static bfd_boolean
6827 1.1 christos ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6828 1.1 christos {
6829 1.1 christos if (h->plt.plist != NULL
6830 1.1 christos && !h->def_regular
6831 1.1 christos && (!h->pointer_equality_needed
6832 1.1 christos || !h->ref_regular_nonweak))
6833 1.1 christos return FALSE;
6834 1.1 christos
6835 1.3 christos return _bfd_elf_hash_symbol (h);
6836 1.1 christos }
6837 1.1 christos
6838 1.1 christos #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6840 1.1 christos
6841 1.1 christos /* Relaxation trampolines. r12 is available for clobbering (r11, is
6842 1.1 christos used for some functions that are allowed to break the ABI). */
6843 1.1 christos static const int shared_stub_entry[] =
6844 1.1 christos {
6845 1.1 christos 0x7c0802a6, /* mflr 0 */
6846 1.1 christos 0x429f0005, /* bcl 20, 31, .Lxxx */
6847 1.1 christos 0x7d8802a6, /* mflr 12 */
6848 1.1 christos 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6849 1.3 christos 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6850 1.3 christos 0x7c0803a6, /* mtlr 0 */
6851 1.3 christos 0x7d8903a6, /* mtctr 12 */
6852 1.5 christos 0x4e800420, /* bctr */
6853 1.3 christos };
6854 1.3 christos
6855 1.3 christos static const int stub_entry[] =
6856 1.3 christos {
6857 1.3 christos 0x3d800000, /* lis 12,xxx@ha */
6858 1.3 christos 0x398c0000, /* addi 12,12,xxx@l */
6859 1.3 christos 0x7d8903a6, /* mtctr 12 */
6860 1.1 christos 0x4e800420, /* bctr */
6861 1.1 christos };
6862 1.1 christos
6863 1.1 christos struct ppc_elf_relax_info
6864 1.1 christos {
6865 1.1 christos unsigned int workaround_size;
6866 1.5 christos unsigned int picfixup_size;
6867 1.1 christos };
6868 1.5 christos
6869 1.1 christos /* This function implements long branch trampolines, and the ppc476
6870 1.1 christos icache bug workaround. Any section needing trampolines or patch
6871 1.1 christos space for the workaround has its size extended so that we can
6872 1.1 christos add trampolines at the end of the section. */
6873 1.1 christos
6874 1.1 christos static bfd_boolean
6875 1.1 christos ppc_elf_relax_section (bfd *abfd,
6876 1.1 christos asection *isec,
6877 1.1 christos struct bfd_link_info *link_info,
6878 1.1 christos bfd_boolean *again)
6879 1.1 christos {
6880 1.3 christos struct one_branch_fixup
6881 1.5 christos {
6882 1.3 christos struct one_branch_fixup *next;
6883 1.1 christos asection *tsec;
6884 1.3 christos /* Final link, can use the symbol offset. For a
6885 1.1 christos relocatable link we use the symbol's index. */
6886 1.5 christos bfd_vma toff;
6887 1.1 christos bfd_vma trampoff;
6888 1.1 christos };
6889 1.1 christos
6890 1.1 christos Elf_Internal_Shdr *symtab_hdr;
6891 1.1 christos bfd_byte *contents = NULL;
6892 1.3 christos Elf_Internal_Sym *isymbuf = NULL;
6893 1.1 christos Elf_Internal_Rela *internal_relocs = NULL;
6894 1.1 christos Elf_Internal_Rela *irel, *irelend = NULL;
6895 1.3 christos struct one_branch_fixup *branch_fixups = NULL;
6896 1.3 christos struct ppc_elf_relax_info *relax_info = NULL;
6897 1.1 christos unsigned changes = 0;
6898 1.1 christos bfd_boolean workaround_change;
6899 1.1 christos struct ppc_elf_link_hash_table *htab;
6900 1.1 christos bfd_size_type trampbase, trampoff, newsize, picfixup_size;
6901 1.1 christos asection *got2;
6902 1.6 christos bfd_boolean maybe_pasted;
6903 1.3 christos
6904 1.3 christos *again = FALSE;
6905 1.3 christos
6906 1.3 christos /* No need to do anything with non-alloc or non-code sections. */
6907 1.3 christos if ((isec->flags & SEC_ALLOC) == 0
6908 1.3 christos || (isec->flags & SEC_CODE) == 0
6909 1.3 christos || (isec->flags & SEC_LINKER_CREATED) != 0
6910 1.3 christos || isec->size < 4)
6911 1.3 christos return TRUE;
6912 1.3 christos
6913 1.3 christos /* We cannot represent the required PIC relocs in the output, so don't
6914 1.3 christos do anything. The linker doesn't support mixing -shared and -r
6915 1.3 christos anyway. */
6916 1.3 christos if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
6917 1.3 christos return TRUE;
6918 1.5 christos
6919 1.5 christos htab = ppc_elf_hash_table (link_info);
6920 1.3 christos if (htab == NULL)
6921 1.3 christos return TRUE;
6922 1.3 christos
6923 1.3 christos isec->size = (isec->size + 3) & -4;
6924 1.3 christos if (isec->rawsize == 0)
6925 1.3 christos isec->rawsize = isec->size;
6926 1.3 christos trampbase = isec->size;
6927 1.3 christos
6928 1.3 christos BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6929 1.3 christos || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6930 1.3 christos isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6931 1.1 christos
6932 1.1 christos if (htab->params->ppc476_workaround
6933 1.1 christos || htab->params->pic_fixup > 0)
6934 1.1 christos {
6935 1.3 christos if (elf_section_data (isec)->sec_info == NULL)
6936 1.3 christos {
6937 1.1 christos elf_section_data (isec)->sec_info
6938 1.1 christos = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6939 1.1 christos if (elf_section_data (isec)->sec_info == NULL)
6940 1.5 christos return FALSE;
6941 1.5 christos }
6942 1.5 christos relax_info = elf_section_data (isec)->sec_info;
6943 1.1 christos trampbase -= relax_info->workaround_size;
6944 1.3 christos }
6945 1.3 christos
6946 1.1 christos maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6947 1.3 christos || strcmp (isec->output_section->name, ".fini") == 0);
6948 1.3 christos /* Space for a branch around any trampolines. */
6949 1.3 christos trampoff = trampbase;
6950 1.3 christos if (maybe_pasted && trampbase == isec->rawsize)
6951 1.3 christos trampoff += 4;
6952 1.1 christos
6953 1.3 christos symtab_hdr = &elf_symtab_hdr (abfd);
6954 1.1 christos picfixup_size = 0;
6955 1.3 christos if (htab->params->branch_trampolines
6956 1.3 christos || htab->params->pic_fixup > 0)
6957 1.3 christos {
6958 1.3 christos /* Get a copy of the native relocations. */
6959 1.3 christos if (isec->reloc_count != 0)
6960 1.3 christos {
6961 1.5 christos internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6962 1.3 christos link_info->keep_memory);
6963 1.5 christos if (internal_relocs == NULL)
6964 1.3 christos goto error_return;
6965 1.3 christos }
6966 1.3 christos
6967 1.3 christos got2 = bfd_get_section_by_name (abfd, ".got2");
6968 1.3 christos
6969 1.3 christos irelend = internal_relocs + isec->reloc_count;
6970 1.3 christos for (irel = internal_relocs; irel < irelend; irel++)
6971 1.3 christos {
6972 1.3 christos unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6973 1.3 christos bfd_vma toff, roff;
6974 1.3 christos asection *tsec;
6975 1.3 christos struct one_branch_fixup *f;
6976 1.3 christos size_t insn_offset = 0;
6977 1.1 christos bfd_vma max_branch_offset = 0, val;
6978 1.3 christos bfd_byte *hit_addr;
6979 1.3 christos unsigned long t0;
6980 1.3 christos struct elf_link_hash_entry *h;
6981 1.3 christos struct plt_entry **plist;
6982 1.3 christos unsigned char sym_type;
6983 1.1 christos
6984 1.5 christos switch (r_type)
6985 1.5 christos {
6986 1.5 christos case R_PPC_REL24:
6987 1.5 christos case R_PPC_LOCAL24PC:
6988 1.5 christos case R_PPC_PLTREL24:
6989 1.3 christos max_branch_offset = 1 << 25;
6990 1.3 christos break;
6991 1.1 christos
6992 1.1 christos case R_PPC_REL14:
6993 1.3 christos case R_PPC_REL14_BRTAKEN:
6994 1.3 christos case R_PPC_REL14_BRNTAKEN:
6995 1.3 christos max_branch_offset = 1 << 15;
6996 1.3 christos break;
6997 1.3 christos
6998 1.3 christos case R_PPC_ADDR16_HA:
6999 1.1 christos if (htab->params->pic_fixup > 0)
7000 1.3 christos break;
7001 1.3 christos continue;
7002 1.3 christos
7003 1.3 christos default:
7004 1.3 christos continue;
7005 1.3 christos }
7006 1.3 christos
7007 1.3 christos /* Get the value of the symbol referred to by the reloc. */
7008 1.3 christos h = NULL;
7009 1.3 christos if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
7010 1.3 christos {
7011 1.3 christos /* A local symbol. */
7012 1.3 christos Elf_Internal_Sym *isym;
7013 1.3 christos
7014 1.3 christos /* Read this BFD's local symbols. */
7015 1.3 christos if (isymbuf == NULL)
7016 1.3 christos {
7017 1.3 christos isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
7018 1.3 christos if (isymbuf == NULL)
7019 1.3 christos isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
7020 1.1 christos symtab_hdr->sh_info, 0,
7021 1.3 christos NULL, NULL, NULL);
7022 1.3 christos if (isymbuf == 0)
7023 1.1 christos goto error_return;
7024 1.3 christos }
7025 1.1 christos isym = isymbuf + ELF32_R_SYM (irel->r_info);
7026 1.3 christos if (isym->st_shndx == SHN_UNDEF)
7027 1.3 christos tsec = bfd_und_section_ptr;
7028 1.1 christos else if (isym->st_shndx == SHN_ABS)
7029 1.3 christos tsec = bfd_abs_section_ptr;
7030 1.3 christos else if (isym->st_shndx == SHN_COMMON)
7031 1.1 christos tsec = bfd_com_section_ptr;
7032 1.3 christos else
7033 1.3 christos tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7034 1.3 christos
7035 1.1 christos toff = isym->st_value;
7036 1.3 christos sym_type = ELF_ST_TYPE (isym->st_info);
7037 1.3 christos }
7038 1.3 christos else
7039 1.3 christos {
7040 1.3 christos /* Global symbol handling. */
7041 1.3 christos unsigned long indx;
7042 1.3 christos
7043 1.3 christos indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
7044 1.1 christos h = elf_sym_hashes (abfd)[indx];
7045 1.3 christos
7046 1.6 christos while (h->root.type == bfd_link_hash_indirect
7047 1.1 christos || h->root.type == bfd_link_hash_warning)
7048 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
7049 1.3 christos
7050 1.3 christos if (h->root.type == bfd_link_hash_defined
7051 1.3 christos || h->root.type == bfd_link_hash_defweak)
7052 1.3 christos {
7053 1.3 christos tsec = h->root.u.def.section;
7054 1.6 christos toff = h->root.u.def.value;
7055 1.3 christos }
7056 1.3 christos else if (h->root.type == bfd_link_hash_undefined
7057 1.1 christos || h->root.type == bfd_link_hash_undefweak)
7058 1.3 christos {
7059 1.3 christos tsec = bfd_und_section_ptr;
7060 1.3 christos toff = bfd_link_relocatable (link_info) ? indx : 0;
7061 1.3 christos }
7062 1.3 christos else
7063 1.3 christos continue;
7064 1.3 christos
7065 1.3 christos /* If this branch is to __tls_get_addr then we may later
7066 1.3 christos optimise away the call. We won't be needing a long-
7067 1.3 christos branch stub in that case. */
7068 1.3 christos if (bfd_link_executable (link_info)
7069 1.3 christos && h == htab->tls_get_addr
7070 1.3 christos && irel != internal_relocs)
7071 1.3 christos {
7072 1.3 christos unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
7073 1.3 christos unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
7074 1.3 christos unsigned int tls_mask = 0;
7075 1.3 christos
7076 1.3 christos /* The previous reloc should be one of R_PPC_TLSGD or
7077 1.3 christos R_PPC_TLSLD, or for older object files, a reloc
7078 1.3 christos on the __tls_get_addr arg setup insn. Get tls
7079 1.3 christos mask bits from the symbol on that reloc. */
7080 1.3 christos if (t_symndx < symtab_hdr->sh_info)
7081 1.3 christos {
7082 1.3 christos bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7083 1.1 christos
7084 1.3 christos if (local_got_offsets != NULL)
7085 1.3 christos {
7086 1.3 christos struct plt_entry **local_plt = (struct plt_entry **)
7087 1.1 christos (local_got_offsets + symtab_hdr->sh_info);
7088 1.3 christos char *lgot_masks = (char *)
7089 1.3 christos (local_plt + symtab_hdr->sh_info);
7090 1.3 christos tls_mask = lgot_masks[t_symndx];
7091 1.1 christos }
7092 1.3 christos }
7093 1.3 christos else
7094 1.3 christos {
7095 1.3 christos struct elf_link_hash_entry *th
7096 1.3 christos = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
7097 1.3 christos
7098 1.3 christos while (th->root.type == bfd_link_hash_indirect
7099 1.3 christos || th->root.type == bfd_link_hash_warning)
7100 1.3 christos th = (struct elf_link_hash_entry *) th->root.u.i.link;
7101 1.3 christos
7102 1.3 christos tls_mask
7103 1.3 christos = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
7104 1.3 christos }
7105 1.1 christos
7106 1.3 christos /* The mask bits tell us if the call will be
7107 1.3 christos optimised away. */
7108 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
7109 1.5 christos && (t_rtype == R_PPC_TLSGD
7110 1.5 christos || t_rtype == R_PPC_GOT_TLSGD16
7111 1.5 christos || t_rtype == R_PPC_GOT_TLSGD16_LO))
7112 1.5 christos continue;
7113 1.5 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
7114 1.5 christos && (t_rtype == R_PPC_TLSLD
7115 1.5 christos || t_rtype == R_PPC_GOT_TLSLD16
7116 1.5 christos || t_rtype == R_PPC_GOT_TLSLD16_LO))
7117 1.5 christos continue;
7118 1.5 christos }
7119 1.5 christos
7120 1.3 christos sym_type = h->type;
7121 1.3 christos }
7122 1.3 christos
7123 1.3 christos if (r_type == R_PPC_ADDR16_HA)
7124 1.3 christos {
7125 1.3 christos if (h != NULL
7126 1.3 christos && !h->def_regular
7127 1.3 christos && h->protected_def
7128 1.3 christos && ppc_elf_hash_entry (h)->has_addr16_ha
7129 1.3 christos && ppc_elf_hash_entry (h)->has_addr16_lo)
7130 1.3 christos picfixup_size += 12;
7131 1.3 christos continue;
7132 1.3 christos }
7133 1.3 christos
7134 1.3 christos /* The condition here under which we call find_plt_ent must
7135 1.3 christos match that in relocate_section. If we call find_plt_ent here
7136 1.3 christos but not in relocate_section, or vice versa, then the branch
7137 1.3 christos destination used here may be incorrect. */
7138 1.3 christos plist = NULL;
7139 1.3 christos if (h != NULL)
7140 1.3 christos {
7141 1.3 christos /* We know is_branch_reloc (r_type) is true. */
7142 1.3 christos if (h->type == STT_GNU_IFUNC
7143 1.3 christos || r_type == R_PPC_PLTREL24)
7144 1.1 christos plist = &h->plt.plist;
7145 1.6 christos }
7146 1.3 christos else if (sym_type == STT_GNU_IFUNC
7147 1.3 christos && elf_local_got_offsets (abfd) != NULL)
7148 1.3 christos {
7149 1.3 christos bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7150 1.3 christos struct plt_entry **local_plt = (struct plt_entry **)
7151 1.3 christos (local_got_offsets + symtab_hdr->sh_info);
7152 1.3 christos plist = local_plt + ELF32_R_SYM (irel->r_info);
7153 1.3 christos }
7154 1.3 christos if (plist != NULL)
7155 1.3 christos {
7156 1.3 christos bfd_vma addend = 0;
7157 1.3 christos struct plt_entry *ent;
7158 1.3 christos
7159 1.3 christos if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
7160 1.3 christos addend = irel->r_addend;
7161 1.3 christos ent = find_plt_ent (plist, got2, addend);
7162 1.3 christos if (ent != NULL)
7163 1.3 christos {
7164 1.3 christos if (htab->plt_type == PLT_NEW
7165 1.1 christos || h == NULL
7166 1.3 christos || !htab->elf.dynamic_sections_created
7167 1.3 christos || h->dynindx == -1)
7168 1.3 christos {
7169 1.3 christos tsec = htab->glink;
7170 1.1 christos toff = ent->glink_offset;
7171 1.1 christos }
7172 1.3 christos else
7173 1.3 christos {
7174 1.3 christos tsec = htab->plt;
7175 1.3 christos toff = ent->plt.offset;
7176 1.3 christos }
7177 1.3 christos }
7178 1.3 christos }
7179 1.3 christos
7180 1.3 christos /* If the branch and target are in the same section, you have
7181 1.3 christos no hope of adding stubs. We'll error out later should the
7182 1.3 christos branch overflow. */
7183 1.3 christos if (tsec == isec)
7184 1.3 christos continue;
7185 1.3 christos
7186 1.3 christos /* There probably isn't any reason to handle symbols in
7187 1.3 christos SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7188 1.3 christos attribute for a code section, and we are only looking at
7189 1.3 christos branches. However, implement it correctly here as a
7190 1.3 christos reference for other target relax_section functions. */
7191 1.3 christos if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7192 1.3 christos {
7193 1.3 christos /* At this stage in linking, no SEC_MERGE symbol has been
7194 1.3 christos adjusted, so all references to such symbols need to be
7195 1.3 christos passed through _bfd_merged_section_offset. (Later, in
7196 1.3 christos relocate_section, all SEC_MERGE symbols *except* for
7197 1.3 christos section symbols have been adjusted.)
7198 1.3 christos
7199 1.3 christos gas may reduce relocations against symbols in SEC_MERGE
7200 1.3 christos sections to a relocation against the section symbol when
7201 1.3 christos the original addend was zero. When the reloc is against
7202 1.1 christos a section symbol we should include the addend in the
7203 1.3 christos offset passed to _bfd_merged_section_offset, since the
7204 1.3 christos location of interest is the original symbol. On the
7205 1.3 christos other hand, an access to "sym+addend" where "sym" is not
7206 1.3 christos a section symbol should not include the addend; Such an
7207 1.3 christos access is presumed to be an offset from "sym"; The
7208 1.3 christos location of interest is just "sym". */
7209 1.1 christos if (sym_type == STT_SECTION)
7210 1.3 christos toff += irel->r_addend;
7211 1.6 christos
7212 1.3 christos toff
7213 1.3 christos = _bfd_merged_section_offset (abfd, &tsec,
7214 1.3 christos elf_section_data (tsec)->sec_info,
7215 1.3 christos toff);
7216 1.1 christos
7217 1.1 christos if (sym_type != STT_SECTION)
7218 1.3 christos toff += irel->r_addend;
7219 1.3 christos }
7220 1.3 christos /* PLTREL24 addends are special. */
7221 1.3 christos else if (r_type != R_PPC_PLTREL24)
7222 1.6 christos toff += irel->r_addend;
7223 1.3 christos
7224 1.3 christos /* Attempted -shared link of non-pic code loses. */
7225 1.3 christos if ((!bfd_link_relocatable (link_info)
7226 1.3 christos && tsec == bfd_und_section_ptr)
7227 1.3 christos || tsec->output_section == NULL
7228 1.3 christos || (tsec->owner != NULL
7229 1.3 christos && (tsec->owner->flags & BFD_PLUGIN) != 0))
7230 1.3 christos continue;
7231 1.3 christos
7232 1.3 christos roff = irel->r_offset;
7233 1.3 christos
7234 1.1 christos /* If the branch is in range, no need to do anything. */
7235 1.3 christos if (tsec != bfd_und_section_ptr
7236 1.3 christos && (!bfd_link_relocatable (link_info)
7237 1.5 christos /* A relocatable link may have sections moved during
7238 1.3 christos final link, so do not presume they remain in range. */
7239 1.3 christos || tsec->output_section == isec->output_section))
7240 1.3 christos {
7241 1.3 christos bfd_vma symaddr, reladdr;
7242 1.1 christos
7243 1.3 christos symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7244 1.3 christos reladdr = isec->output_section->vma + isec->output_offset + roff;
7245 1.1 christos if (symaddr - reladdr + max_branch_offset
7246 1.3 christos < 2 * max_branch_offset)
7247 1.3 christos continue;
7248 1.3 christos }
7249 1.3 christos
7250 1.3 christos /* Look for an existing fixup to this address. */
7251 1.1 christos for (f = branch_fixups; f ; f = f->next)
7252 1.6 christos if (f->tsec == tsec && f->toff == toff)
7253 1.3 christos break;
7254 1.3 christos
7255 1.3 christos if (f == NULL)
7256 1.3 christos {
7257 1.3 christos size_t size;
7258 1.3 christos unsigned long stub_rtype;
7259 1.3 christos
7260 1.3 christos val = trampoff - roff;
7261 1.3 christos if (val >= max_branch_offset)
7262 1.3 christos /* Oh dear, we can't reach a trampoline. Don't try to add
7263 1.3 christos one. We'll report an error later. */
7264 1.3 christos continue;
7265 1.3 christos
7266 1.3 christos if (bfd_link_pic (link_info))
7267 1.3 christos {
7268 1.3 christos size = 4 * ARRAY_SIZE (shared_stub_entry);
7269 1.3 christos insn_offset = 12;
7270 1.1 christos }
7271 1.3 christos else
7272 1.3 christos {
7273 1.3 christos size = 4 * ARRAY_SIZE (stub_entry);
7274 1.3 christos insn_offset = 0;
7275 1.3 christos }
7276 1.3 christos stub_rtype = R_PPC_RELAX;
7277 1.3 christos if (tsec == htab->plt
7278 1.3 christos || tsec == htab->glink)
7279 1.3 christos {
7280 1.3 christos stub_rtype = R_PPC_RELAX_PLT;
7281 1.3 christos if (r_type == R_PPC_PLTREL24)
7282 1.5 christos stub_rtype = R_PPC_RELAX_PLTREL24;
7283 1.3 christos }
7284 1.3 christos
7285 1.3 christos /* Hijack the old relocation. Since we need two
7286 1.5 christos relocations for this use a "composite" reloc. */
7287 1.1 christos irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7288 1.3 christos stub_rtype);
7289 1.3 christos irel->r_offset = trampoff + insn_offset;
7290 1.3 christos if (r_type == R_PPC_PLTREL24
7291 1.1 christos && stub_rtype != R_PPC_RELAX_PLTREL24)
7292 1.1 christos irel->r_addend = 0;
7293 1.3 christos
7294 1.3 christos /* Record the fixup so we don't do it again this section. */
7295 1.3 christos f = bfd_malloc (sizeof (*f));
7296 1.3 christos f->next = branch_fixups;
7297 1.3 christos f->tsec = tsec;
7298 1.3 christos f->toff = toff;
7299 1.3 christos f->trampoff = trampoff;
7300 1.3 christos branch_fixups = f;
7301 1.3 christos
7302 1.3 christos trampoff += size;
7303 1.3 christos changes++;
7304 1.3 christos }
7305 1.3 christos else
7306 1.3 christos {
7307 1.1 christos val = f->trampoff - roff;
7308 1.3 christos if (val >= max_branch_offset)
7309 1.1 christos continue;
7310 1.1 christos
7311 1.1 christos /* Nop out the reloc, since we're finalizing things here. */
7312 1.3 christos irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7313 1.3 christos }
7314 1.3 christos
7315 1.3 christos /* Get the section contents. */
7316 1.3 christos if (contents == NULL)
7317 1.3 christos {
7318 1.3 christos /* Get cached copy if it exists. */
7319 1.3 christos if (elf_section_data (isec)->this_hdr.contents != NULL)
7320 1.3 christos contents = elf_section_data (isec)->this_hdr.contents;
7321 1.3 christos /* Go get them off disk. */
7322 1.3 christos else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7323 1.3 christos goto error_return;
7324 1.1 christos }
7325 1.3 christos
7326 1.3 christos /* Fix up the existing branch to hit the trampoline. */
7327 1.3 christos hit_addr = contents + roff;
7328 1.3 christos switch (r_type)
7329 1.3 christos {
7330 1.3 christos case R_PPC_REL24:
7331 1.3 christos case R_PPC_LOCAL24PC:
7332 1.3 christos case R_PPC_PLTREL24:
7333 1.3 christos t0 = bfd_get_32 (abfd, hit_addr);
7334 1.1 christos t0 &= ~0x3fffffc;
7335 1.1 christos t0 |= val & 0x3fffffc;
7336 1.5 christos bfd_put_32 (abfd, t0, hit_addr);
7337 1.1 christos break;
7338 1.5 christos
7339 1.5 christos case R_PPC_REL14:
7340 1.1 christos case R_PPC_REL14_BRTAKEN:
7341 1.1 christos case R_PPC_REL14_BRNTAKEN:
7342 1.3 christos t0 = bfd_get_32 (abfd, hit_addr);
7343 1.1 christos t0 &= ~0xfffc;
7344 1.3 christos t0 |= val & 0xfffc;
7345 1.3 christos bfd_put_32 (abfd, t0, hit_addr);
7346 1.3 christos break;
7347 1.6 christos }
7348 1.3 christos }
7349 1.3 christos
7350 1.3 christos while (branch_fixups != NULL)
7351 1.3 christos {
7352 1.3 christos struct one_branch_fixup *f = branch_fixups;
7353 1.3 christos branch_fixups = branch_fixups->next;
7354 1.3 christos free (f);
7355 1.3 christos }
7356 1.3 christos }
7357 1.3 christos
7358 1.3 christos workaround_change = FALSE;
7359 1.3 christos newsize = trampoff;
7360 1.3 christos if (htab->params->ppc476_workaround
7361 1.3 christos && (!bfd_link_relocatable (link_info)
7362 1.3 christos || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7363 1.3 christos {
7364 1.3 christos bfd_vma addr, end_addr;
7365 1.3 christos unsigned int crossings;
7366 1.3 christos bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7367 1.3 christos
7368 1.3 christos addr = isec->output_section->vma + isec->output_offset;
7369 1.3 christos end_addr = addr + trampoff;
7370 1.3 christos addr &= -pagesize;
7371 1.3 christos crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7372 1.1 christos if (crossings != 0)
7373 1.3 christos {
7374 1.3 christos /* Keep space aligned, to ensure the patch code itself does
7375 1.1 christos not cross a page. Don't decrease size calculated on a
7376 1.5 christos previous pass as otherwise we might never settle on a layout. */
7377 1.5 christos newsize = 15 - ((end_addr - 1) & 15);
7378 1.5 christos newsize += crossings * 16;
7379 1.5 christos if (relax_info->workaround_size < newsize)
7380 1.5 christos {
7381 1.5 christos relax_info->workaround_size = newsize;
7382 1.5 christos workaround_change = TRUE;
7383 1.5 christos }
7384 1.5 christos /* Ensure relocate_section is called. */
7385 1.3 christos isec->flags |= SEC_RELOC;
7386 1.1 christos }
7387 1.1 christos newsize = trampoff + relax_info->workaround_size;
7388 1.1 christos }
7389 1.1 christos
7390 1.1 christos if (htab->params->pic_fixup > 0)
7391 1.1 christos {
7392 1.1 christos picfixup_size -= relax_info->picfixup_size;
7393 1.1 christos if (picfixup_size != 0)
7394 1.1 christos relax_info->picfixup_size += picfixup_size;
7395 1.1 christos newsize += relax_info->picfixup_size;
7396 1.1 christos }
7397 1.1 christos
7398 1.1 christos if (changes != 0 || picfixup_size != 0 || workaround_change)
7399 1.1 christos isec->size = newsize;
7400 1.1 christos
7401 1.1 christos if (isymbuf != NULL
7402 1.1 christos && symtab_hdr->contents != (unsigned char *) isymbuf)
7403 1.1 christos {
7404 1.1 christos if (! link_info->keep_memory)
7405 1.1 christos free (isymbuf);
7406 1.1 christos else
7407 1.1 christos {
7408 1.1 christos /* Cache the symbols for elf_link_input_bfd. */
7409 1.1 christos symtab_hdr->contents = (unsigned char *) isymbuf;
7410 1.1 christos }
7411 1.5 christos }
7412 1.1 christos
7413 1.1 christos if (contents != NULL
7414 1.1 christos && elf_section_data (isec)->this_hdr.contents != contents)
7415 1.1 christos {
7416 1.1 christos if (!changes && !link_info->keep_memory)
7417 1.1 christos free (contents);
7418 1.1 christos else
7419 1.1 christos {
7420 1.1 christos /* Cache the section contents for elf_link_input_bfd. */
7421 1.1 christos elf_section_data (isec)->this_hdr.contents = contents;
7422 1.1 christos }
7423 1.1 christos }
7424 1.1 christos
7425 1.1 christos changes += picfixup_size;
7426 1.1 christos if (changes != 0)
7427 1.1 christos {
7428 1.1 christos /* Append sufficient NOP relocs so we can write out relocation
7429 1.1 christos information for the trampolines. */
7430 1.1 christos Elf_Internal_Shdr *rel_hdr;
7431 1.1 christos Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7432 1.1 christos * sizeof (*new_relocs));
7433 1.1 christos unsigned ix;
7434 1.1 christos
7435 1.1 christos if (!new_relocs)
7436 1.1 christos goto error_return;
7437 1.1 christos memcpy (new_relocs, internal_relocs,
7438 1.3 christos isec->reloc_count * sizeof (*new_relocs));
7439 1.3 christos for (ix = changes; ix--;)
7440 1.1 christos {
7441 1.1 christos irel = new_relocs + ix + isec->reloc_count;
7442 1.3 christos
7443 1.1 christos irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7444 1.1 christos }
7445 1.1 christos if (internal_relocs != elf_section_data (isec)->relocs)
7446 1.5 christos free (internal_relocs);
7447 1.3 christos elf_section_data (isec)->relocs = new_relocs;
7448 1.5 christos isec->reloc_count += changes;
7449 1.5 christos rel_hdr = _bfd_elf_single_rel_hdr (isec);
7450 1.3 christos rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7451 1.3 christos }
7452 1.1 christos else if (internal_relocs != NULL
7453 1.1 christos && elf_section_data (isec)->relocs != internal_relocs)
7454 1.1 christos free (internal_relocs);
7455 1.1 christos
7456 1.1 christos *again = changes != 0 || workaround_change;
7457 1.1 christos return TRUE;
7458 1.1 christos
7459 1.1 christos error_return:
7460 1.1 christos while (branch_fixups != NULL)
7461 1.1 christos {
7462 1.1 christos struct one_branch_fixup *f = branch_fixups;
7463 1.1 christos branch_fixups = branch_fixups->next;
7464 1.1 christos free (f);
7465 1.1 christos }
7466 1.1 christos if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7467 1.1 christos free (isymbuf);
7468 1.1 christos if (contents != NULL
7469 1.1 christos && elf_section_data (isec)->this_hdr.contents != contents)
7470 1.1 christos free (contents);
7471 1.1 christos if (internal_relocs != NULL
7472 1.1 christos && elf_section_data (isec)->relocs != internal_relocs)
7473 1.1 christos free (internal_relocs);
7474 1.1 christos return FALSE;
7475 1.1 christos }
7476 1.1 christos
7477 1.1 christos /* What to do when ld finds relocations against symbols defined in
7479 1.1 christos discarded sections. */
7480 1.1 christos
7481 1.1 christos static unsigned int
7482 1.1 christos ppc_elf_action_discarded (asection *sec)
7483 1.1 christos {
7484 1.1 christos if (strcmp (".fixup", sec->name) == 0)
7485 1.1 christos return 0;
7486 1.1 christos
7487 1.1 christos if (strcmp (".got2", sec->name) == 0)
7488 1.1 christos return 0;
7489 1.1 christos
7490 1.1 christos return _bfd_elf_default_action_discarded (sec);
7491 1.1 christos }
7492 1.1 christos
7493 1.1 christos /* Fill in the address for a pointer generated in a linker section. */
7495 1.1 christos
7496 1.1 christos static bfd_vma
7497 1.1 christos elf_finish_pointer_linker_section (bfd *input_bfd,
7498 1.1 christos elf_linker_section_t *lsect,
7499 1.1 christos struct elf_link_hash_entry *h,
7500 1.1 christos bfd_vma relocation,
7501 1.1 christos const Elf_Internal_Rela *rel)
7502 1.1 christos {
7503 1.1 christos elf_linker_section_pointers_t *linker_section_ptr;
7504 1.1 christos
7505 1.1 christos BFD_ASSERT (lsect != NULL);
7506 1.1 christos
7507 1.1 christos if (h != NULL)
7508 1.1 christos {
7509 1.1 christos /* Handle global symbol. */
7510 1.1 christos struct ppc_elf_link_hash_entry *eh;
7511 1.1 christos
7512 1.1 christos eh = (struct ppc_elf_link_hash_entry *) h;
7513 1.1 christos BFD_ASSERT (eh->elf.def_regular);
7514 1.1 christos linker_section_ptr = eh->linker_section_pointer;
7515 1.1 christos }
7516 1.1 christos else
7517 1.1 christos {
7518 1.1 christos /* Handle local symbol. */
7519 1.1 christos unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7520 1.1 christos
7521 1.1 christos BFD_ASSERT (is_ppc_elf (input_bfd));
7522 1.1 christos BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7523 1.1 christos linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7524 1.1 christos }
7525 1.1 christos
7526 1.1 christos linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7527 1.1 christos rel->r_addend,
7528 1.1 christos lsect);
7529 1.1 christos BFD_ASSERT (linker_section_ptr != NULL);
7530 1.1 christos
7531 1.1 christos /* Offset will always be a multiple of four, so use the bottom bit
7532 1.1 christos as a "written" flag. */
7533 1.1 christos if ((linker_section_ptr->offset & 1) == 0)
7534 1.1 christos {
7535 1.1 christos bfd_put_32 (lsect->section->owner,
7536 1.1 christos relocation + linker_section_ptr->addend,
7537 1.1 christos lsect->section->contents + linker_section_ptr->offset);
7538 1.1 christos linker_section_ptr->offset += 1;
7539 1.1 christos }
7540 1.1 christos
7541 1.1 christos relocation = (lsect->section->output_section->vma
7542 1.1 christos + lsect->section->output_offset
7543 1.1 christos + linker_section_ptr->offset - 1
7544 1.1 christos - SYM_VAL (lsect->sym));
7545 1.1 christos
7546 1.1 christos #ifdef DEBUG
7547 1.1 christos fprintf (stderr,
7548 1.1 christos "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7549 1.1 christos lsect->name, (long) relocation, (long) relocation);
7550 1.1 christos #endif
7551 1.1 christos
7552 1.1 christos return relocation;
7553 1.1 christos }
7554 1.1 christos
7555 1.6 christos #define PPC_LO(v) ((v) & 0xffff)
7556 1.1 christos #define PPC_HI(v) (((v) >> 16) & 0xffff)
7557 1.1 christos #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7558 1.1 christos
7559 1.1 christos static void
7560 1.1 christos write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
7561 1.1 christos struct bfd_link_info *info)
7562 1.1 christos {
7563 1.1 christos struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7564 1.1 christos bfd *output_bfd = info->output_bfd;
7565 1.1 christos bfd_vma plt;
7566 1.1 christos
7567 1.1 christos plt = ((ent->plt.offset & ~1)
7568 1.1 christos + plt_sec->output_section->vma
7569 1.1 christos + plt_sec->output_offset);
7570 1.1 christos
7571 1.1 christos if (bfd_link_pic (info))
7572 1.1 christos {
7573 1.1 christos bfd_vma got = 0;
7574 1.1 christos
7575 1.1 christos if (ent->addend >= 32768)
7576 1.3 christos got = (ent->addend
7577 1.1 christos + ent->sec->output_section->vma
7578 1.1 christos + ent->sec->output_offset);
7579 1.1 christos else if (htab->elf.hgot != NULL)
7580 1.1 christos got = SYM_VAL (htab->elf.hgot);
7581 1.1 christos
7582 1.1 christos plt -= got;
7583 1.1 christos
7584 1.1 christos if (plt + 0x8000 < 0x10000)
7585 1.1 christos {
7586 1.1 christos bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7587 1.1 christos p += 4;
7588 1.1 christos bfd_put_32 (output_bfd, MTCTR_11, p);
7589 1.1 christos p += 4;
7590 1.1 christos bfd_put_32 (output_bfd, BCTR, p);
7591 1.1 christos p += 4;
7592 1.1 christos bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
7593 1.1 christos p += 4;
7594 1.1 christos }
7595 1.1 christos else
7596 1.1 christos {
7597 1.1 christos bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7598 1.1 christos p += 4;
7599 1.1 christos bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7600 1.1 christos p += 4;
7601 1.1 christos bfd_put_32 (output_bfd, MTCTR_11, p);
7602 1.1 christos p += 4;
7603 1.1 christos bfd_put_32 (output_bfd, BCTR, p);
7604 1.1 christos p += 4;
7605 1.1 christos }
7606 1.1 christos }
7607 1.1 christos else
7608 1.1 christos {
7609 1.1 christos bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7610 1.1 christos p += 4;
7611 1.1 christos bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7612 1.1 christos p += 4;
7613 1.1 christos bfd_put_32 (output_bfd, MTCTR_11, p);
7614 1.1 christos p += 4;
7615 1.1 christos bfd_put_32 (output_bfd, BCTR, p);
7616 1.1 christos p += 4;
7617 1.1 christos }
7618 1.1 christos }
7619 1.1 christos
7620 1.1 christos /* Return true if symbol is defined statically. */
7621 1.1 christos
7622 1.1 christos static bfd_boolean
7623 1.1 christos is_static_defined (struct elf_link_hash_entry *h)
7624 1.1 christos {
7625 1.1 christos return ((h->root.type == bfd_link_hash_defined
7626 1.1 christos || h->root.type == bfd_link_hash_defweak)
7627 1.1 christos && h->root.u.def.section != NULL
7628 1.1 christos && h->root.u.def.section->output_section != NULL);
7629 1.1 christos }
7630 1.1 christos
7631 1.1 christos /* If INSN is an opcode that may be used with an @tls operand, return
7632 1.1 christos the transformed insn for TLS optimisation, otherwise return 0. If
7633 1.1 christos REG is non-zero only match an insn with RB or RA equal to REG. */
7634 1.1 christos
7635 1.1 christos unsigned int
7636 1.1 christos _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7637 1.1 christos {
7638 1.1 christos unsigned int rtra;
7639 1.1 christos
7640 1.1 christos if ((insn & (0x3f << 26)) != 31 << 26)
7641 1.1 christos return 0;
7642 1.1 christos
7643 1.1 christos if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7644 1.1 christos rtra = insn & ((1 << 26) - (1 << 16));
7645 1.1 christos else if (((insn >> 16) & 0x1f) == reg)
7646 1.1 christos rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7647 1.1 christos else
7648 1.1 christos return 0;
7649 1.1 christos
7650 1.1 christos if ((insn & (0x3ff << 1)) == 266 << 1)
7651 1.1 christos /* add -> addi. */
7652 1.1 christos insn = 14 << 26;
7653 1.1 christos else if ((insn & (0x1f << 1)) == 23 << 1
7654 1.1 christos && ((insn & (0x1f << 6)) < 14 << 6
7655 1.1 christos || ((insn & (0x1f << 6)) >= 16 << 6
7656 1.1 christos && (insn & (0x1f << 6)) < 24 << 6)))
7657 1.1 christos /* load and store indexed -> dform. */
7658 1.1 christos insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7659 1.1 christos else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7660 1.1 christos /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7661 1.1 christos insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7662 1.1 christos else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7663 1.1 christos /* lwax -> lwa. */
7664 1.1 christos insn = (58 << 26) | 2;
7665 1.1 christos else
7666 1.1 christos return 0;
7667 1.1 christos insn |= rtra;
7668 1.1 christos return insn;
7669 1.1 christos }
7670 1.1 christos
7671 1.1 christos /* If INSN is an opcode that may be used with an @tprel operand, return
7672 1.1 christos the transformed insn for an undefined weak symbol, ie. with the
7673 1.1 christos thread pointer REG operand removed. Otherwise return 0. */
7674 1.1 christos
7675 1.1 christos unsigned int
7676 1.1 christos _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7677 1.1 christos {
7678 1.1 christos if ((insn & (0x1f << 16)) == reg << 16
7679 1.1 christos && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7680 1.1 christos || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7681 1.1 christos || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7682 1.1 christos || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7683 1.1 christos || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7684 1.1 christos || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7685 1.1 christos || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7686 1.1 christos || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7687 1.1 christos || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7688 1.1 christos || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7689 1.1 christos || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7690 1.1 christos || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7691 1.1 christos || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7692 1.1 christos || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7693 1.1 christos || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7694 1.1 christos || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7695 1.1 christos && (insn & 3) != 1)
7696 1.1 christos || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7697 1.1 christos && ((insn & 3) == 0 || (insn & 3) == 3))))
7698 1.1 christos {
7699 1.1 christos insn &= ~(0x1f << 16);
7700 1.1 christos }
7701 1.1 christos else if ((insn & (0x1f << 21)) == reg << 21
7702 1.1 christos && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7703 1.1 christos || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7704 1.1 christos || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7705 1.1 christos {
7706 1.1 christos insn &= ~(0x1f << 21);
7707 1.1 christos insn |= (insn & (0x1f << 16)) << 5;
7708 1.1 christos if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7709 1.1 christos insn -= 2 >> 26; /* convert to ori,oris */
7710 1.1 christos }
7711 1.1 christos else
7712 1.6 christos insn = 0;
7713 1.6 christos return insn;
7714 1.6 christos }
7715 1.1 christos
7716 1.1 christos static bfd_boolean
7717 1.1 christos is_insn_ds_form (unsigned int insn)
7718 1.1 christos {
7719 1.1 christos return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7720 1.1 christos || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7721 1.1 christos || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7722 1.1 christos || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7723 1.1 christos }
7724 1.1 christos
7725 1.1 christos static bfd_boolean
7726 1.1 christos is_insn_dq_form (unsigned int insn)
7727 1.1 christos {
7728 1.1 christos return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
7729 1.1 christos || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7730 1.1 christos && (insn & 3) == 1));
7731 1.1 christos }
7732 1.1 christos
7733 1.1 christos /* The RELOCATE_SECTION function is called by the ELF backend linker
7734 1.1 christos to handle the relocations for a section.
7735 1.1 christos
7736 1.1 christos The relocs are always passed as Rela structures; if the section
7737 1.1 christos actually uses Rel structures, the r_addend field will always be
7738 1.1 christos zero.
7739 1.1 christos
7740 1.1 christos This function is responsible for adjust the section contents as
7741 1.1 christos necessary, and (if using Rela relocs and generating a
7742 1.1 christos relocatable output file) adjusting the reloc addend as
7743 1.1 christos necessary.
7744 1.1 christos
7745 1.1 christos This function does not have to worry about setting the reloc
7746 1.1 christos address or the reloc symbol index.
7747 1.1 christos
7748 1.1 christos LOCAL_SYMS is a pointer to the swapped in local symbols.
7749 1.1 christos
7750 1.1 christos LOCAL_SECTIONS is an array giving the section in the input file
7751 1.1 christos corresponding to the st_shndx field of each local symbol.
7752 1.1 christos
7753 1.1 christos The global hash table entry for the global symbols can be found
7754 1.1 christos via elf_sym_hashes (input_bfd).
7755 1.1 christos
7756 1.1 christos When generating relocatable output, this function must handle
7757 1.1 christos STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7758 1.1 christos going to be the section symbol corresponding to the output
7759 1.1 christos section, which means that the addend must be adjusted
7760 1.6 christos accordingly. */
7761 1.1 christos
7762 1.1 christos static bfd_boolean
7763 1.1 christos ppc_elf_relocate_section (bfd *output_bfd,
7764 1.1 christos struct bfd_link_info *info,
7765 1.1 christos bfd *input_bfd,
7766 1.1 christos asection *input_section,
7767 1.1 christos bfd_byte *contents,
7768 1.5 christos Elf_Internal_Rela *relocs,
7769 1.5 christos Elf_Internal_Sym *local_syms,
7770 1.1 christos asection **local_sections)
7771 1.1 christos {
7772 1.1 christos Elf_Internal_Shdr *symtab_hdr;
7773 1.1 christos struct elf_link_hash_entry **sym_hashes;
7774 1.1 christos struct ppc_elf_link_hash_table *htab;
7775 1.1 christos Elf_Internal_Rela *rel;
7776 1.6 christos Elf_Internal_Rela *wrel;
7777 1.1 christos Elf_Internal_Rela *relend;
7778 1.1 christos Elf_Internal_Rela outrel;
7779 1.1 christos asection *got2;
7780 1.1 christos bfd_vma *local_got_offsets;
7781 1.1 christos bfd_boolean ret = TRUE;
7782 1.1 christos bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
7783 1.1 christos bfd_boolean is_vxworks_tls;
7784 1.1 christos unsigned int picfixup_size = 0;
7785 1.1 christos struct ppc_elf_relax_info *relax_info = NULL;
7786 1.1 christos
7787 1.1 christos #ifdef DEBUG
7788 1.1 christos _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7789 1.1 christos "%ld relocations%s",
7790 1.1 christos input_bfd, input_section,
7791 1.6 christos (long) input_section->reloc_count,
7792 1.1 christos (bfd_link_relocatable (info)) ? " (relocatable)" : "");
7793 1.1 christos #endif
7794 1.5 christos
7795 1.5 christos got2 = bfd_get_section_by_name (input_bfd, ".got2");
7796 1.6 christos
7797 1.1 christos /* Initialize howto table if not already done. */
7798 1.6 christos if (!ppc_elf_howto_table[R_PPC_ADDR32])
7799 1.1 christos ppc_elf_howto_init ();
7800 1.1 christos
7801 1.1 christos htab = ppc_elf_hash_table (info);
7802 1.1 christos local_got_offsets = elf_local_got_offsets (input_bfd);
7803 1.1 christos symtab_hdr = &elf_symtab_hdr (input_bfd);
7804 1.1 christos sym_hashes = elf_sym_hashes (input_bfd);
7805 1.1 christos /* We have to handle relocations in vxworks .tls_vars sections
7806 1.1 christos specially, because the dynamic loader is 'weird'. */
7807 1.1 christos is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
7808 1.1 christos && !strcmp (input_section->output_section->name,
7809 1.1 christos ".tls_vars"));
7810 1.1 christos if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7811 1.1 christos relax_info = elf_section_data (input_section)->sec_info;
7812 1.1 christos rel = wrel = relocs;
7813 1.1 christos relend = relocs + input_section->reloc_count;
7814 1.1 christos for (; rel < relend; wrel++, rel++)
7815 1.3 christos {
7816 1.1 christos enum elf_ppc_reloc_type r_type;
7817 1.6 christos bfd_vma addend;
7818 1.1 christos bfd_reloc_status_type r;
7819 1.1 christos Elf_Internal_Sym *sym;
7820 1.1 christos asection *sec;
7821 1.1 christos struct elf_link_hash_entry *h;
7822 1.1 christos const char *sym_name;
7823 1.1 christos reloc_howto_type *howto;
7824 1.1 christos unsigned long r_symndx;
7825 1.1 christos bfd_vma relocation;
7826 1.1 christos bfd_vma branch_bit, from;
7827 1.1 christos bfd_boolean unresolved_reloc;
7828 1.1 christos bfd_boolean warned;
7829 1.1 christos unsigned int tls_type, tls_mask, tls_gd;
7830 1.1 christos struct plt_entry **ifunc;
7831 1.1 christos struct reloc_howto_struct alt_howto;
7832 1.1 christos
7833 1.1 christos again:
7834 1.1 christos r_type = ELF32_R_TYPE (rel->r_info);
7835 1.1 christos sym = NULL;
7836 1.1 christos sec = NULL;
7837 1.1 christos h = NULL;
7838 1.1 christos unresolved_reloc = FALSE;
7839 1.1 christos warned = FALSE;
7840 1.1 christos r_symndx = ELF32_R_SYM (rel->r_info);
7841 1.1 christos
7842 1.1 christos if (r_symndx < symtab_hdr->sh_info)
7843 1.1 christos {
7844 1.1 christos sym = local_syms + r_symndx;
7845 1.1 christos sec = local_sections[r_symndx];
7846 1.1 christos sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7847 1.1 christos
7848 1.1 christos relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7849 1.1 christos }
7850 1.1 christos else
7851 1.1 christos {
7852 1.1 christos bfd_boolean ignored;
7853 1.1 christos
7854 1.6 christos RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7855 1.6 christos r_symndx, symtab_hdr, sym_hashes,
7856 1.6 christos h, sec, relocation,
7857 1.6 christos unresolved_reloc, warned, ignored);
7858 1.6 christos
7859 1.6 christos sym_name = h->root.root.string;
7860 1.6 christos }
7861 1.6 christos
7862 1.6 christos if (sec != NULL && discarded_section (sec))
7863 1.6 christos {
7864 1.6 christos /* For relocs against symbols from removed linkonce sections,
7865 1.6 christos or sections discarded by a linker script, we just want the
7866 1.6 christos section contents zeroed. Avoid any special processing. */
7867 1.6 christos howto = NULL;
7868 1.6 christos if (r_type < R_PPC_max)
7869 1.6 christos howto = ppc_elf_howto_table[r_type];
7870 1.1 christos
7871 1.1 christos _bfd_clear_contents (howto, input_bfd, input_section,
7872 1.6 christos contents + rel->r_offset);
7873 1.1 christos wrel->r_offset = rel->r_offset;
7874 1.1 christos wrel->r_info = 0;
7875 1.1 christos wrel->r_addend = 0;
7876 1.1 christos
7877 1.1 christos /* For ld -r, remove relocations in debug sections against
7878 1.1 christos sections defined in discarded sections. Not done for
7879 1.1 christos non-debug to preserve relocs in .eh_frame which the
7880 1.1 christos eh_frame editing code expects to be present. */
7881 1.1 christos if (bfd_link_relocatable (info)
7882 1.3 christos && (input_section->flags & SEC_DEBUGGING))
7883 1.3 christos wrel--;
7884 1.3 christos
7885 1.6 christos continue;
7886 1.1 christos }
7887 1.1 christos
7888 1.1 christos if (bfd_link_relocatable (info))
7889 1.1 christos {
7890 1.1 christos if (got2 != NULL
7891 1.1 christos && r_type == R_PPC_PLTREL24
7892 1.1 christos && rel->r_addend != 0)
7893 1.1 christos {
7894 1.1 christos /* R_PPC_PLTREL24 is rather special. If non-zero, the
7895 1.1 christos addend specifies the GOT pointer offset within .got2. */
7896 1.1 christos rel->r_addend += got2->output_offset;
7897 1.1 christos }
7898 1.1 christos if (r_type != R_PPC_RELAX_PLT
7899 1.1 christos && r_type != R_PPC_RELAX_PLTREL24
7900 1.1 christos && r_type != R_PPC_RELAX)
7901 1.1 christos goto copy_reloc;
7902 1.1 christos }
7903 1.1 christos
7904 1.1 christos /* TLS optimizations. Replace instruction sequences and relocs
7905 1.1 christos based on information we collected in tls_optimize. We edit
7906 1.1 christos RELOCS so that --emit-relocs will output something sensible
7907 1.1 christos for the final instruction stream. */
7908 1.1 christos tls_mask = 0;
7909 1.1 christos tls_gd = 0;
7910 1.1 christos if (h != NULL)
7911 1.1 christos tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7912 1.1 christos else if (local_got_offsets != NULL)
7913 1.1 christos {
7914 1.1 christos struct plt_entry **local_plt;
7915 1.1 christos char *lgot_masks;
7916 1.1 christos local_plt
7917 1.1 christos = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7918 1.1 christos lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7919 1.1 christos tls_mask = lgot_masks[r_symndx];
7920 1.1 christos }
7921 1.1 christos
7922 1.1 christos /* Ensure reloc mapping code below stays sane. */
7923 1.1 christos if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7924 1.1 christos || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7925 1.1 christos || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7926 1.1 christos || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7927 1.1 christos || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7928 1.6 christos || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7929 1.6 christos || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7930 1.1 christos || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7931 1.1 christos abort ();
7932 1.6 christos switch (r_type)
7933 1.6 christos {
7934 1.1 christos default:
7935 1.1 christos break;
7936 1.1 christos
7937 1.1 christos case R_PPC_GOT_TPREL16:
7938 1.1 christos case R_PPC_GOT_TPREL16_LO:
7939 1.1 christos if ((tls_mask & TLS_TLS) != 0
7940 1.1 christos && (tls_mask & TLS_TPREL) == 0)
7941 1.1 christos {
7942 1.1 christos bfd_vma insn;
7943 1.1 christos
7944 1.1 christos insn = bfd_get_32 (output_bfd,
7945 1.1 christos contents + rel->r_offset - d_offset);
7946 1.1 christos insn &= 31 << 21;
7947 1.1 christos insn |= 0x3c020000; /* addis 0,2,0 */
7948 1.1 christos bfd_put_32 (output_bfd, insn,
7949 1.1 christos contents + rel->r_offset - d_offset);
7950 1.1 christos r_type = R_PPC_TPREL16_HA;
7951 1.1 christos rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7952 1.1 christos }
7953 1.1 christos break;
7954 1.1 christos
7955 1.1 christos case R_PPC_TLS:
7956 1.1 christos if ((tls_mask & TLS_TLS) != 0
7957 1.1 christos && (tls_mask & TLS_TPREL) == 0)
7958 1.1 christos {
7959 1.1 christos bfd_vma insn;
7960 1.1 christos
7961 1.1 christos insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7962 1.1 christos insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7963 1.1 christos if (insn == 0)
7964 1.1 christos abort ();
7965 1.1 christos bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7966 1.1 christos r_type = R_PPC_TPREL16_LO;
7967 1.1 christos rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7968 1.1 christos
7969 1.1 christos /* Was PPC_TLS which sits on insn boundary, now
7970 1.1 christos PPC_TPREL16_LO which is at low-order half-word. */
7971 1.1 christos rel->r_offset += d_offset;
7972 1.1 christos }
7973 1.1 christos break;
7974 1.1 christos
7975 1.1 christos case R_PPC_GOT_TLSGD16_HI:
7976 1.5 christos case R_PPC_GOT_TLSGD16_HA:
7977 1.1 christos tls_gd = TLS_TPRELGD;
7978 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7979 1.1 christos goto tls_gdld_hi;
7980 1.1 christos break;
7981 1.1 christos
7982 1.1 christos case R_PPC_GOT_TLSLD16_HI:
7983 1.1 christos case R_PPC_GOT_TLSLD16_HA:
7984 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7985 1.1 christos {
7986 1.1 christos tls_gdld_hi:
7987 1.1 christos if ((tls_mask & tls_gd) != 0)
7988 1.1 christos r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7989 1.1 christos + R_PPC_GOT_TPREL16);
7990 1.1 christos else
7991 1.1 christos {
7992 1.1 christos rel->r_offset -= d_offset;
7993 1.1 christos bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
7994 1.1 christos r_type = R_PPC_NONE;
7995 1.1 christos }
7996 1.1 christos rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7997 1.1 christos }
7998 1.1 christos break;
7999 1.1 christos
8000 1.1 christos case R_PPC_GOT_TLSGD16:
8001 1.1 christos case R_PPC_GOT_TLSGD16_LO:
8002 1.1 christos tls_gd = TLS_TPRELGD;
8003 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8004 1.1 christos goto tls_ldgd_opt;
8005 1.1 christos break;
8006 1.1 christos
8007 1.1 christos case R_PPC_GOT_TLSLD16:
8008 1.1 christos case R_PPC_GOT_TLSLD16_LO:
8009 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8010 1.5 christos {
8011 1.5 christos unsigned int insn1, insn2;
8012 1.5 christos bfd_vma offset;
8013 1.5 christos
8014 1.5 christos tls_ldgd_opt:
8015 1.5 christos offset = (bfd_vma) -1;
8016 1.1 christos /* If not using the newer R_PPC_TLSGD/LD to mark
8017 1.1 christos __tls_get_addr calls, we must trust that the call
8018 1.1 christos stays with its arg setup insns, ie. that the next
8019 1.5 christos reloc is the __tls_get_addr call associated with
8020 1.1 christos the current reloc. Edit both insns. */
8021 1.1 christos if (input_section->has_tls_get_addr_call
8022 1.1 christos && rel + 1 < relend
8023 1.1 christos && branch_reloc_hash_match (input_bfd, rel + 1,
8024 1.1 christos htab->tls_get_addr))
8025 1.1 christos offset = rel[1].r_offset;
8026 1.1 christos /* We read the low GOT_TLS insn because we need to keep
8027 1.1 christos the destination reg. It may be something other than
8028 1.1 christos the usual r3, and moved to r3 before the call by
8029 1.1 christos intervening code. */
8030 1.1 christos insn1 = bfd_get_32 (output_bfd,
8031 1.1 christos contents + rel->r_offset - d_offset);
8032 1.1 christos if ((tls_mask & tls_gd) != 0)
8033 1.1 christos {
8034 1.5 christos /* IE */
8035 1.5 christos insn1 &= (0x1f << 21) | (0x1f << 16);
8036 1.1 christos insn1 |= 32 << 26; /* lwz */
8037 1.1 christos if (offset != (bfd_vma) -1)
8038 1.1 christos {
8039 1.1 christos rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8040 1.1 christos insn2 = 0x7c631214; /* add 3,3,2 */
8041 1.1 christos bfd_put_32 (output_bfd, insn2, contents + offset);
8042 1.1 christos }
8043 1.1 christos r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
8044 1.1 christos + R_PPC_GOT_TPREL16);
8045 1.1 christos rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8046 1.1 christos }
8047 1.1 christos else
8048 1.1 christos {
8049 1.1 christos /* LE */
8050 1.1 christos insn1 &= 0x1f << 21;
8051 1.1 christos insn1 |= 0x3c020000; /* addis r,2,0 */
8052 1.1 christos if (tls_gd == 0)
8053 1.1 christos {
8054 1.1 christos /* Was an LD reloc. */
8055 1.1 christos for (r_symndx = 0;
8056 1.1 christos r_symndx < symtab_hdr->sh_info;
8057 1.1 christos r_symndx++)
8058 1.1 christos if (local_sections[r_symndx] == sec)
8059 1.1 christos break;
8060 1.1 christos if (r_symndx >= symtab_hdr->sh_info)
8061 1.1 christos r_symndx = STN_UNDEF;
8062 1.1 christos rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8063 1.1 christos if (r_symndx != STN_UNDEF)
8064 1.1 christos rel->r_addend -= (local_syms[r_symndx].st_value
8065 1.1 christos + sec->output_offset
8066 1.1 christos + sec->output_section->vma);
8067 1.1 christos }
8068 1.1 christos r_type = R_PPC_TPREL16_HA;
8069 1.6 christos rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8070 1.1 christos if (offset != (bfd_vma) -1)
8071 1.1 christos {
8072 1.1 christos rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8073 1.1 christos rel[1].r_offset = offset + d_offset;
8074 1.1 christos rel[1].r_addend = rel->r_addend;
8075 1.1 christos insn2 = 0x38630000; /* addi 3,3,0 */
8076 1.1 christos bfd_put_32 (output_bfd, insn2, contents + offset);
8077 1.1 christos }
8078 1.1 christos }
8079 1.1 christos bfd_put_32 (output_bfd, insn1,
8080 1.1 christos contents + rel->r_offset - d_offset);
8081 1.1 christos if (tls_gd == 0)
8082 1.1 christos {
8083 1.1 christos /* We changed the symbol on an LD reloc. Start over
8084 1.1 christos in order to get h, sym, sec etc. right. */
8085 1.1 christos goto again;
8086 1.1 christos }
8087 1.1 christos }
8088 1.1 christos break;
8089 1.1 christos
8090 1.1 christos case R_PPC_TLSGD:
8091 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8092 1.1 christos {
8093 1.1 christos unsigned int insn2;
8094 1.1 christos bfd_vma offset = rel->r_offset;
8095 1.1 christos
8096 1.1 christos if ((tls_mask & TLS_TPRELGD) != 0)
8097 1.1 christos {
8098 1.1 christos /* IE */
8099 1.1 christos r_type = R_PPC_NONE;
8100 1.1 christos insn2 = 0x7c631214; /* add 3,3,2 */
8101 1.1 christos }
8102 1.1 christos else
8103 1.1 christos {
8104 1.1 christos /* LE */
8105 1.1 christos r_type = R_PPC_TPREL16_LO;
8106 1.1 christos rel->r_offset += d_offset;
8107 1.1 christos insn2 = 0x38630000; /* addi 3,3,0 */
8108 1.1 christos }
8109 1.1 christos rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8110 1.1 christos bfd_put_32 (output_bfd, insn2, contents + offset);
8111 1.1 christos /* Zap the reloc on the _tls_get_addr call too. */
8112 1.1 christos BFD_ASSERT (offset == rel[1].r_offset);
8113 1.1 christos rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8114 1.1 christos }
8115 1.1 christos break;
8116 1.1 christos
8117 1.1 christos case R_PPC_TLSLD:
8118 1.1 christos if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8119 1.1 christos {
8120 1.1 christos unsigned int insn2;
8121 1.1 christos
8122 1.1 christos for (r_symndx = 0;
8123 1.1 christos r_symndx < symtab_hdr->sh_info;
8124 1.1 christos r_symndx++)
8125 1.1 christos if (local_sections[r_symndx] == sec)
8126 1.1 christos break;
8127 1.6 christos if (r_symndx >= symtab_hdr->sh_info)
8128 1.1 christos r_symndx = STN_UNDEF;
8129 1.1 christos rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8130 1.1 christos if (r_symndx != STN_UNDEF)
8131 1.1 christos rel->r_addend -= (local_syms[r_symndx].st_value
8132 1.1 christos + sec->output_offset
8133 1.1 christos + sec->output_section->vma);
8134 1.1 christos
8135 1.1 christos rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8136 1.1 christos rel->r_offset += d_offset;
8137 1.1 christos insn2 = 0x38630000; /* addi 3,3,0 */
8138 1.1 christos bfd_put_32 (output_bfd, insn2,
8139 1.1 christos contents + rel->r_offset - d_offset);
8140 1.1 christos /* Zap the reloc on the _tls_get_addr call too. */
8141 1.1 christos BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
8142 1.1 christos rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8143 1.1 christos goto again;
8144 1.1 christos }
8145 1.1 christos break;
8146 1.1 christos }
8147 1.1 christos
8148 1.1 christos /* Handle other relocations that tweak non-addend part of insn. */
8149 1.1 christos branch_bit = 0;
8150 1.1 christos switch (r_type)
8151 1.1 christos {
8152 1.1 christos default:
8153 1.1 christos break;
8154 1.1 christos
8155 1.1 christos /* Branch taken prediction relocations. */
8156 1.1 christos case R_PPC_ADDR14_BRTAKEN:
8157 1.1 christos case R_PPC_REL14_BRTAKEN:
8158 1.1 christos branch_bit = BRANCH_PREDICT_BIT;
8159 1.1 christos /* Fall thru */
8160 1.1 christos
8161 1.1 christos /* Branch not taken prediction relocations. */
8162 1.1 christos case R_PPC_ADDR14_BRNTAKEN:
8163 1.1 christos case R_PPC_REL14_BRNTAKEN:
8164 1.1 christos {
8165 1.1 christos bfd_vma insn;
8166 1.1 christos
8167 1.1 christos insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
8168 1.5 christos insn &= ~BRANCH_PREDICT_BIT;
8169 1.5 christos insn |= branch_bit;
8170 1.5 christos
8171 1.5 christos from = (rel->r_offset
8172 1.5 christos + input_section->output_offset
8173 1.5 christos + input_section->output_section->vma);
8174 1.5 christos
8175 1.5 christos /* Invert 'y' bit if not the default. */
8176 1.5 christos if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8177 1.5 christos insn ^= BRANCH_PREDICT_BIT;
8178 1.5 christos
8179 1.5 christos bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8180 1.5 christos break;
8181 1.5 christos }
8182 1.5 christos }
8183 1.5 christos
8184 1.5 christos if (ELIMINATE_COPY_RELOCS
8185 1.5 christos && h != NULL
8186 1.5 christos && !h->def_regular
8187 1.5 christos && h->protected_def
8188 1.5 christos && ppc_elf_hash_entry (h)->has_addr16_ha
8189 1.5 christos && ppc_elf_hash_entry (h)->has_addr16_lo
8190 1.5 christos && htab->params->pic_fixup > 0)
8191 1.5 christos {
8192 1.5 christos /* Convert lis;addi or lis;load/store accessing a protected
8193 1.5 christos variable defined in a shared library to PIC. */
8194 1.5 christos unsigned int insn;
8195 1.5 christos
8196 1.5 christos if (r_type == R_PPC_ADDR16_HA)
8197 1.5 christos {
8198 1.5 christos insn = bfd_get_32 (output_bfd,
8199 1.5 christos contents + rel->r_offset - d_offset);
8200 1.5 christos if ((insn & (0x3f << 26)) == (15u << 26)
8201 1.5 christos && (insn & (0x1f << 16)) == 0 /* lis */)
8202 1.5 christos {
8203 1.5 christos bfd_byte *p;
8204 1.5 christos bfd_vma off;
8205 1.5 christos bfd_vma got_addr;
8206 1.6 christos
8207 1.6 christos p = (contents + input_section->size
8208 1.6 christos - relax_info->workaround_size
8209 1.5 christos - relax_info->picfixup_size
8210 1.5 christos + picfixup_size);
8211 1.5 christos off = (p - contents) - (rel->r_offset - d_offset);
8212 1.5 christos if (off > 0x1fffffc || (off & 3) != 0)
8213 1.5 christos info->callbacks->einfo
8214 1.5 christos (_("%P: %H: fixup branch overflow\n"),
8215 1.5 christos input_bfd, input_section, rel->r_offset);
8216 1.5 christos
8217 1.5 christos bfd_put_32 (output_bfd, B | off,
8218 1.5 christos contents + rel->r_offset - d_offset);
8219 1.5 christos got_addr = (htab->got->output_section->vma
8220 1.5 christos + htab->got->output_offset
8221 1.5 christos + (h->got.offset & ~1));
8222 1.5 christos wrel->r_offset = (p - contents) + d_offset;
8223 1.5 christos wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8224 1.5 christos wrel->r_addend = got_addr;
8225 1.5 christos insn &= ~0xffff;
8226 1.6 christos insn |= ((unsigned int )(got_addr + 0x8000) >> 16) & 0xffff;
8227 1.6 christos bfd_put_32 (output_bfd, insn, p);
8228 1.5 christos
8229 1.6 christos /* Convert lis to lwz, loading address from GOT. */
8230 1.5 christos insn &= ~0xffff;
8231 1.5 christos insn ^= (32u ^ 15u) << 26;
8232 1.5 christos insn |= (insn & (0x1f << 21)) >> 5;
8233 1.5 christos insn |= got_addr & 0xffff;
8234 1.5 christos bfd_put_32 (output_bfd, insn, p + 4);
8235 1.5 christos
8236 1.5 christos bfd_put_32 (output_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
8237 1.5 christos picfixup_size += 12;
8238 1.5 christos
8239 1.5 christos /* Use one of the spare relocs, so --emit-relocs
8240 1.5 christos output is reasonable. */
8241 1.5 christos memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8242 1.5 christos wrel++, rel++;
8243 1.5 christos rel->r_offset = wrel[-1].r_offset + 4;
8244 1.5 christos rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
8245 1.5 christos rel->r_addend = wrel[-1].r_addend;
8246 1.5 christos
8247 1.5 christos /* Continue on as if we had a got reloc, to output
8248 1.5 christos dynamic reloc. */
8249 1.5 christos r_type = R_PPC_GOT16_LO;
8250 1.5 christos }
8251 1.5 christos else
8252 1.5 christos info->callbacks->einfo
8253 1.5 christos (_("%P: %H: error: %s with unexpected instruction %x\n"),
8254 1.5 christos input_bfd, input_section, rel->r_offset,
8255 1.5 christos "R_PPC_ADDR16_HA", insn);
8256 1.5 christos }
8257 1.5 christos else if (r_type == R_PPC_ADDR16_LO)
8258 1.5 christos {
8259 1.5 christos insn = bfd_get_32 (output_bfd,
8260 1.5 christos contents + rel->r_offset - d_offset);
8261 1.5 christos if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8262 1.5 christos || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8263 1.5 christos || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8264 1.5 christos || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8265 1.5 christos || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8266 1.5 christos || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8267 1.5 christos || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8268 1.5 christos || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8269 1.5 christos || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8270 1.5 christos || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8271 1.5 christos || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8272 1.5 christos || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8273 1.5 christos || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8274 1.5 christos || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8275 1.5 christos || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8276 1.5 christos && (insn & 3) != 1)
8277 1.1 christos || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8278 1.1 christos && ((insn & 3) == 0 || (insn & 3) == 3)))
8279 1.1 christos {
8280 1.1 christos /* Arrange to apply the reloc addend, if any. */
8281 1.1 christos relocation = 0;
8282 1.1 christos unresolved_reloc = FALSE;
8283 1.1 christos rel->r_info = ELF32_R_INFO (0, r_type);
8284 1.1 christos }
8285 1.1 christos else
8286 1.1 christos info->callbacks->einfo
8287 1.1 christos (_("%P: %H: error: %s with unexpected instruction %x\n"),
8288 1.1 christos input_bfd, input_section, rel->r_offset,
8289 1.1 christos "R_PPC_ADDR16_LO", insn);
8290 1.1 christos }
8291 1.1 christos }
8292 1.1 christos
8293 1.1 christos ifunc = NULL;
8294 1.1 christos if (!htab->is_vxworks)
8295 1.1 christos {
8296 1.1 christos struct plt_entry *ent;
8297 1.1 christos
8298 1.1 christos if (h != NULL)
8299 1.6 christos {
8300 1.1 christos if (h->type == STT_GNU_IFUNC)
8301 1.1 christos ifunc = &h->plt.plist;
8302 1.1 christos }
8303 1.6 christos else if (local_got_offsets != NULL
8304 1.1 christos && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8305 1.1 christos {
8306 1.1 christos struct plt_entry **local_plt;
8307 1.1 christos
8308 1.1 christos local_plt = (struct plt_entry **) (local_got_offsets
8309 1.1 christos + symtab_hdr->sh_info);
8310 1.1 christos ifunc = local_plt + r_symndx;
8311 1.1 christos }
8312 1.1 christos
8313 1.1 christos ent = NULL;
8314 1.1 christos if (ifunc != NULL
8315 1.1 christos && (!bfd_link_pic (info)
8316 1.1 christos || is_branch_reloc (r_type)))
8317 1.1 christos {
8318 1.1 christos addend = 0;
8319 1.1 christos if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
8320 1.1 christos addend = rel->r_addend;
8321 1.1 christos ent = find_plt_ent (ifunc, got2, addend);
8322 1.1 christos }
8323 1.1 christos if (ent != NULL)
8324 1.1 christos {
8325 1.1 christos if (h == NULL && (ent->plt.offset & 1) == 0)
8326 1.1 christos {
8327 1.1 christos Elf_Internal_Rela rela;
8328 1.1 christos bfd_byte *loc;
8329 1.1 christos
8330 1.1 christos rela.r_offset = (htab->iplt->output_section->vma
8331 1.1 christos + htab->iplt->output_offset
8332 1.1 christos + ent->plt.offset);
8333 1.1 christos rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8334 1.1 christos rela.r_addend = relocation;
8335 1.1 christos loc = htab->reliplt->contents;
8336 1.1 christos loc += (htab->reliplt->reloc_count++
8337 1.3 christos * sizeof (Elf32_External_Rela));
8338 1.3 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8339 1.1 christos
8340 1.1 christos ent->plt.offset |= 1;
8341 1.1 christos }
8342 1.1 christos if (h == NULL && (ent->glink_offset & 1) == 0)
8343 1.1 christos {
8344 1.1 christos unsigned char *p = ((unsigned char *) htab->glink->contents
8345 1.1 christos + ent->glink_offset);
8346 1.1 christos write_glink_stub (ent, htab->iplt, p, info);
8347 1.1 christos ent->glink_offset |= 1;
8348 1.1 christos }
8349 1.1 christos
8350 1.1 christos unresolved_reloc = FALSE;
8351 1.1 christos if (htab->plt_type == PLT_NEW
8352 1.1 christos || !htab->elf.dynamic_sections_created
8353 1.1 christos || h == NULL
8354 1.1 christos || h->dynindx == -1)
8355 1.1 christos relocation = (htab->glink->output_section->vma
8356 1.1 christos + htab->glink->output_offset
8357 1.1 christos + (ent->glink_offset & ~1));
8358 1.1 christos else
8359 1.1 christos relocation = (htab->plt->output_section->vma
8360 1.1 christos + htab->plt->output_offset
8361 1.1 christos + ent->plt.offset);
8362 1.1 christos }
8363 1.6 christos }
8364 1.1 christos
8365 1.1 christos addend = rel->r_addend;
8366 1.1 christos tls_type = 0;
8367 1.1 christos howto = NULL;
8368 1.1 christos if (r_type < R_PPC_max)
8369 1.1 christos howto = ppc_elf_howto_table[r_type];
8370 1.1 christos switch (r_type)
8371 1.1 christos {
8372 1.6 christos default:
8373 1.1 christos info->callbacks->einfo
8374 1.1 christos (_("%P: %B: unknown relocation type %d for symbol %s\n"),
8375 1.1 christos input_bfd, (int) r_type, sym_name);
8376 1.1 christos
8377 1.1 christos bfd_set_error (bfd_error_bad_value);
8378 1.1 christos ret = FALSE;
8379 1.1 christos goto copy_reloc;
8380 1.1 christos
8381 1.1 christos case R_PPC_NONE:
8382 1.1 christos case R_PPC_TLS:
8383 1.1 christos case R_PPC_TLSGD:
8384 1.1 christos case R_PPC_TLSLD:
8385 1.1 christos case R_PPC_EMB_MRKREF:
8386 1.1 christos case R_PPC_GNU_VTINHERIT:
8387 1.1 christos case R_PPC_GNU_VTENTRY:
8388 1.1 christos goto copy_reloc;
8389 1.1 christos
8390 1.1 christos /* GOT16 relocations. Like an ADDR16 using the symbol's
8391 1.1 christos address in the GOT as relocation value instead of the
8392 1.1 christos symbol's value itself. Also, create a GOT entry for the
8393 1.1 christos symbol and put the symbol value there. */
8394 1.1 christos case R_PPC_GOT_TLSGD16:
8395 1.1 christos case R_PPC_GOT_TLSGD16_LO:
8396 1.1 christos case R_PPC_GOT_TLSGD16_HI:
8397 1.1 christos case R_PPC_GOT_TLSGD16_HA:
8398 1.1 christos tls_type = TLS_TLS | TLS_GD;
8399 1.1 christos goto dogot;
8400 1.1 christos
8401 1.1 christos case R_PPC_GOT_TLSLD16:
8402 1.1 christos case R_PPC_GOT_TLSLD16_LO:
8403 1.1 christos case R_PPC_GOT_TLSLD16_HI:
8404 1.1 christos case R_PPC_GOT_TLSLD16_HA:
8405 1.1 christos tls_type = TLS_TLS | TLS_LD;
8406 1.1 christos goto dogot;
8407 1.1 christos
8408 1.1 christos case R_PPC_GOT_TPREL16:
8409 1.1 christos case R_PPC_GOT_TPREL16_LO:
8410 1.1 christos case R_PPC_GOT_TPREL16_HI:
8411 1.1 christos case R_PPC_GOT_TPREL16_HA:
8412 1.1 christos tls_type = TLS_TLS | TLS_TPREL;
8413 1.1 christos goto dogot;
8414 1.1 christos
8415 1.1 christos case R_PPC_GOT_DTPREL16:
8416 1.1 christos case R_PPC_GOT_DTPREL16_LO:
8417 1.1 christos case R_PPC_GOT_DTPREL16_HI:
8418 1.1 christos case R_PPC_GOT_DTPREL16_HA:
8419 1.1 christos tls_type = TLS_TLS | TLS_DTPREL;
8420 1.1 christos goto dogot;
8421 1.1 christos
8422 1.1 christos case R_PPC_GOT16:
8423 1.1 christos case R_PPC_GOT16_LO:
8424 1.1 christos case R_PPC_GOT16_HI:
8425 1.1 christos case R_PPC_GOT16_HA:
8426 1.1 christos tls_mask = 0;
8427 1.1 christos dogot:
8428 1.1 christos {
8429 1.1 christos /* Relocation is to the entry for this symbol in the global
8430 1.1 christos offset table. */
8431 1.6 christos bfd_vma off;
8432 1.6 christos bfd_vma *offp;
8433 1.1 christos unsigned long indx;
8434 1.1 christos
8435 1.1 christos if (htab->got == NULL)
8436 1.1 christos abort ();
8437 1.1 christos
8438 1.1 christos indx = 0;
8439 1.1 christos if (tls_type == (TLS_TLS | TLS_LD)
8440 1.1 christos && (h == NULL
8441 1.1 christos || !h->def_dynamic))
8442 1.1 christos offp = &htab->tlsld_got.offset;
8443 1.1 christos else if (h != NULL)
8444 1.1 christos {
8445 1.1 christos bfd_boolean dyn;
8446 1.1 christos dyn = htab->elf.dynamic_sections_created;
8447 1.1 christos if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
8448 1.1 christos || (bfd_link_pic (info)
8449 1.1 christos && SYMBOL_REFERENCES_LOCAL (info, h)))
8450 1.1 christos /* This is actually a static link, or it is a
8451 1.1 christos -Bsymbolic link and the symbol is defined
8452 1.1 christos locally, or the symbol was forced to be local
8453 1.1 christos because of a version file. */
8454 1.1 christos ;
8455 1.1 christos else
8456 1.1 christos {
8457 1.1 christos BFD_ASSERT (h->dynindx != -1);
8458 1.1 christos indx = h->dynindx;
8459 1.1 christos unresolved_reloc = FALSE;
8460 1.1 christos }
8461 1.1 christos offp = &h->got.offset;
8462 1.1 christos }
8463 1.1 christos else
8464 1.1 christos {
8465 1.1 christos if (local_got_offsets == NULL)
8466 1.1 christos abort ();
8467 1.1 christos offp = &local_got_offsets[r_symndx];
8468 1.1 christos }
8469 1.1 christos
8470 1.1 christos /* The offset must always be a multiple of 4. We use the
8471 1.1 christos least significant bit to record whether we have already
8472 1.1 christos processed this entry. */
8473 1.1 christos off = *offp;
8474 1.1 christos if ((off & 1) != 0)
8475 1.1 christos off &= ~1;
8476 1.1 christos else
8477 1.1 christos {
8478 1.1 christos unsigned int tls_m = (tls_mask
8479 1.1 christos & (TLS_LD | TLS_GD | TLS_DTPREL
8480 1.1 christos | TLS_TPREL | TLS_TPRELGD));
8481 1.1 christos
8482 1.1 christos if (offp == &htab->tlsld_got.offset)
8483 1.1 christos tls_m = TLS_LD;
8484 1.1 christos else if (h == NULL
8485 1.1 christos || !h->def_dynamic)
8486 1.1 christos tls_m &= ~TLS_LD;
8487 1.1 christos
8488 1.1 christos /* We might have multiple got entries for this sym.
8489 1.1 christos Initialize them all. */
8490 1.1 christos do
8491 1.1 christos {
8492 1.1 christos int tls_ty = 0;
8493 1.1 christos
8494 1.1 christos if ((tls_m & TLS_LD) != 0)
8495 1.1 christos {
8496 1.1 christos tls_ty = TLS_TLS | TLS_LD;
8497 1.1 christos tls_m &= ~TLS_LD;
8498 1.1 christos }
8499 1.1 christos else if ((tls_m & TLS_GD) != 0)
8500 1.6 christos {
8501 1.1 christos tls_ty = TLS_TLS | TLS_GD;
8502 1.1 christos tls_m &= ~TLS_GD;
8503 1.1 christos }
8504 1.1 christos else if ((tls_m & TLS_DTPREL) != 0)
8505 1.1 christos {
8506 1.1 christos tls_ty = TLS_TLS | TLS_DTPREL;
8507 1.1 christos tls_m &= ~TLS_DTPREL;
8508 1.1 christos }
8509 1.1 christos else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8510 1.1 christos {
8511 1.1 christos tls_ty = TLS_TLS | TLS_TPREL;
8512 1.1 christos tls_m = 0;
8513 1.1 christos }
8514 1.1 christos
8515 1.1 christos /* Generate relocs for the dynamic linker. */
8516 1.1 christos if ((bfd_link_pic (info) || indx != 0)
8517 1.1 christos && (offp == &htab->tlsld_got.offset
8518 1.1 christos || h == NULL
8519 1.1 christos || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8520 1.1 christos || h->root.type != bfd_link_hash_undefweak))
8521 1.1 christos {
8522 1.1 christos asection *rsec = htab->relgot;
8523 1.1 christos bfd_byte * loc;
8524 1.1 christos
8525 1.1 christos if (ifunc != NULL)
8526 1.1 christos rsec = htab->reliplt;
8527 1.1 christos outrel.r_offset = (htab->got->output_section->vma
8528 1.1 christos + htab->got->output_offset
8529 1.1 christos + off);
8530 1.1 christos outrel.r_addend = 0;
8531 1.1 christos if (tls_ty & (TLS_LD | TLS_GD))
8532 1.1 christos {
8533 1.1 christos outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8534 1.1 christos if (tls_ty == (TLS_TLS | TLS_GD))
8535 1.1 christos {
8536 1.1 christos loc = rsec->contents;
8537 1.1 christos loc += (rsec->reloc_count++
8538 1.1 christos * sizeof (Elf32_External_Rela));
8539 1.1 christos bfd_elf32_swap_reloca_out (output_bfd,
8540 1.1 christos &outrel, loc);
8541 1.1 christos outrel.r_offset += 4;
8542 1.1 christos outrel.r_info
8543 1.1 christos = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8544 1.5 christos }
8545 1.5 christos }
8546 1.5 christos else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8547 1.5 christos outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8548 1.5 christos else if (tls_ty == (TLS_TLS | TLS_TPREL))
8549 1.5 christos outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8550 1.1 christos else if (indx != 0)
8551 1.1 christos outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8552 1.1 christos else if (ifunc != NULL)
8553 1.1 christos outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8554 1.1 christos else
8555 1.1 christos outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8556 1.1 christos if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8557 1.1 christos {
8558 1.1 christos outrel.r_addend += relocation;
8559 1.1 christos if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8560 1.1 christos {
8561 1.1 christos if (htab->elf.tls_sec == NULL)
8562 1.1 christos outrel.r_addend = 0;
8563 1.1 christos else
8564 1.1 christos outrel.r_addend -= htab->elf.tls_sec->vma;
8565 1.1 christos }
8566 1.1 christos }
8567 1.5 christos loc = rsec->contents;
8568 1.5 christos loc += (rsec->reloc_count++
8569 1.5 christos * sizeof (Elf32_External_Rela));
8570 1.5 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8571 1.5 christos }
8572 1.5 christos
8573 1.5 christos /* Init the .got section contents if we're not
8574 1.5 christos emitting a reloc. */
8575 1.1 christos else
8576 1.1 christos {
8577 1.1 christos bfd_vma value = relocation;
8578 1.1 christos
8579 1.1 christos if (tls_ty == (TLS_TLS | TLS_LD))
8580 1.1 christos value = 1;
8581 1.1 christos else if (tls_ty != 0)
8582 1.1 christos {
8583 1.1 christos if (htab->elf.tls_sec == NULL)
8584 1.1 christos value = 0;
8585 1.1 christos else
8586 1.1 christos {
8587 1.1 christos value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8588 1.1 christos if (tls_ty == (TLS_TLS | TLS_TPREL))
8589 1.1 christos value += DTP_OFFSET - TP_OFFSET;
8590 1.1 christos }
8591 1.1 christos
8592 1.1 christos if (tls_ty == (TLS_TLS | TLS_GD))
8593 1.1 christos {
8594 1.1 christos bfd_put_32 (output_bfd, value,
8595 1.1 christos htab->got->contents + off + 4);
8596 1.1 christos value = 1;
8597 1.1 christos }
8598 1.1 christos }
8599 1.1 christos bfd_put_32 (output_bfd, value,
8600 1.1 christos htab->got->contents + off);
8601 1.1 christos }
8602 1.1 christos
8603 1.1 christos off += 4;
8604 1.1 christos if (tls_ty & (TLS_LD | TLS_GD))
8605 1.1 christos off += 4;
8606 1.1 christos }
8607 1.1 christos while (tls_m != 0);
8608 1.1 christos
8609 1.1 christos off = *offp;
8610 1.1 christos *offp = off | 1;
8611 1.1 christos }
8612 1.1 christos
8613 1.1 christos if (off >= (bfd_vma) -2)
8614 1.1 christos abort ();
8615 1.1 christos
8616 1.1 christos if ((tls_type & TLS_TLS) != 0)
8617 1.1 christos {
8618 1.1 christos if (tls_type != (TLS_TLS | TLS_LD))
8619 1.1 christos {
8620 1.1 christos if ((tls_mask & TLS_LD) != 0
8621 1.5 christos && !(h == NULL
8622 1.5 christos || !h->def_dynamic))
8623 1.6 christos off += 8;
8624 1.5 christos if (tls_type != (TLS_TLS | TLS_GD))
8625 1.1 christos {
8626 1.1 christos if ((tls_mask & TLS_GD) != 0)
8627 1.1 christos off += 8;
8628 1.1 christos if (tls_type != (TLS_TLS | TLS_DTPREL))
8629 1.1 christos {
8630 1.1 christos if ((tls_mask & TLS_DTPREL) != 0)
8631 1.1 christos off += 4;
8632 1.1 christos }
8633 1.1 christos }
8634 1.1 christos }
8635 1.1 christos }
8636 1.1 christos
8637 1.1 christos /* If here for a picfixup, we're done. */
8638 1.1 christos if (r_type != ELF32_R_TYPE (rel->r_info))
8639 1.1 christos goto copy_reloc;
8640 1.1 christos
8641 1.3 christos relocation = (htab->got->output_section->vma
8642 1.1 christos + htab->got->output_offset
8643 1.3 christos + off
8644 1.1 christos - SYM_VAL (htab->elf.hgot));
8645 1.1 christos
8646 1.1 christos /* Addends on got relocations don't make much sense.
8647 1.1 christos x+off@got is actually x@got+off, and since the got is
8648 1.1 christos generated by a hash table traversal, the value in the
8649 1.6 christos got at entry m+n bears little relation to the entry m. */
8650 1.6 christos if (addend != 0)
8651 1.6 christos info->callbacks->einfo
8652 1.6 christos (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
8653 1.6 christos input_bfd, input_section, rel->r_offset,
8654 1.6 christos howto->name,
8655 1.6 christos sym_name);
8656 1.1 christos }
8657 1.1 christos break;
8658 1.1 christos
8659 1.1 christos /* Relocations that need no special processing. */
8660 1.1 christos case R_PPC_LOCAL24PC:
8661 1.1 christos /* It makes no sense to point a local relocation
8662 1.1 christos at a symbol not in this object. */
8663 1.5 christos if (unresolved_reloc)
8664 1.5 christos {
8665 1.1 christos (*info->callbacks->undefined_symbol) (info,
8666 1.1 christos h->root.root.string,
8667 1.1 christos input_bfd,
8668 1.1 christos input_section,
8669 1.1 christos rel->r_offset,
8670 1.1 christos TRUE);
8671 1.1 christos goto copy_reloc;
8672 1.1 christos }
8673 1.1 christos break;
8674 1.1 christos
8675 1.1 christos case R_PPC_DTPREL16:
8676 1.1 christos case R_PPC_DTPREL16_LO:
8677 1.1 christos case R_PPC_DTPREL16_HI:
8678 1.1 christos case R_PPC_DTPREL16_HA:
8679 1.1 christos if (htab->elf.tls_sec != NULL)
8680 1.1 christos addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8681 1.1 christos break;
8682 1.1 christos
8683 1.1 christos /* Relocations that may need to be propagated if this is a shared
8684 1.1 christos object. */
8685 1.1 christos case R_PPC_TPREL16:
8686 1.1 christos case R_PPC_TPREL16_LO:
8687 1.1 christos case R_PPC_TPREL16_HI:
8688 1.5 christos case R_PPC_TPREL16_HA:
8689 1.5 christos if (h != NULL
8690 1.1 christos && h->root.type == bfd_link_hash_undefweak
8691 1.1 christos && h->dynindx == -1)
8692 1.1 christos {
8693 1.1 christos /* Make this relocation against an undefined weak symbol
8694 1.1 christos resolve to zero. This is really just a tweak, since
8695 1.1 christos code using weak externs ought to check that they are
8696 1.5 christos defined before using them. */
8697 1.5 christos bfd_byte *p = contents + rel->r_offset - d_offset;
8698 1.1 christos unsigned int insn = bfd_get_32 (output_bfd, p);
8699 1.1 christos insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8700 1.1 christos if (insn != 0)
8701 1.5 christos bfd_put_32 (output_bfd, insn, p);
8702 1.5 christos break;
8703 1.1 christos }
8704 1.1 christos if (htab->elf.tls_sec != NULL)
8705 1.1 christos addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8706 1.1 christos /* The TPREL16 relocs shouldn't really be used in shared
8707 1.1 christos libs as they will result in DT_TEXTREL being set, but
8708 1.1 christos support them anyway. */
8709 1.1 christos goto dodyn;
8710 1.1 christos
8711 1.1 christos case R_PPC_TPREL32:
8712 1.1 christos if (htab->elf.tls_sec != NULL)
8713 1.1 christos addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8714 1.6 christos goto dodyn;
8715 1.1 christos
8716 1.1 christos case R_PPC_DTPREL32:
8717 1.1 christos if (htab->elf.tls_sec != NULL)
8718 1.1 christos addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8719 1.1 christos goto dodyn;
8720 1.1 christos
8721 1.1 christos case R_PPC_DTPMOD32:
8722 1.1 christos relocation = 1;
8723 1.1 christos addend = 0;
8724 1.1 christos goto dodyn;
8725 1.1 christos
8726 1.1 christos case R_PPC_REL16:
8727 1.1 christos case R_PPC_REL16_LO:
8728 1.1 christos case R_PPC_REL16_HI:
8729 1.1 christos case R_PPC_REL16_HA:
8730 1.1 christos case R_PPC_REL16DX_HA:
8731 1.1 christos break;
8732 1.1 christos
8733 1.1 christos case R_PPC_REL32:
8734 1.1 christos if (h == NULL || h == htab->elf.hgot)
8735 1.1 christos break;
8736 1.1 christos /* fall through */
8737 1.1 christos
8738 1.1 christos case R_PPC_ADDR32:
8739 1.1 christos case R_PPC_ADDR16:
8740 1.1 christos case R_PPC_ADDR16_LO:
8741 1.1 christos case R_PPC_ADDR16_HI:
8742 1.1 christos case R_PPC_ADDR16_HA:
8743 1.1 christos case R_PPC_UADDR32:
8744 1.1 christos case R_PPC_UADDR16:
8745 1.1 christos goto dodyn;
8746 1.1 christos
8747 1.1 christos case R_PPC_VLE_REL8:
8748 1.1 christos case R_PPC_VLE_REL15:
8749 1.6 christos case R_PPC_VLE_REL24:
8750 1.1 christos case R_PPC_REL24:
8751 1.1 christos case R_PPC_REL14:
8752 1.1 christos case R_PPC_REL14_BRTAKEN:
8753 1.1 christos case R_PPC_REL14_BRNTAKEN:
8754 1.1 christos /* If these relocations are not to a named symbol, they can be
8755 1.1 christos handled right here, no need to bother the dynamic linker. */
8756 1.1 christos if (SYMBOL_CALLS_LOCAL (info, h)
8757 1.1 christos || h == htab->elf.hgot)
8758 1.6 christos break;
8759 1.1 christos /* fall through */
8760 1.1 christos
8761 1.1 christos case R_PPC_ADDR24:
8762 1.1 christos case R_PPC_ADDR14:
8763 1.1 christos case R_PPC_ADDR14_BRTAKEN:
8764 1.1 christos case R_PPC_ADDR14_BRNTAKEN:
8765 1.1 christos if (h != NULL && !bfd_link_pic (info))
8766 1.1 christos break;
8767 1.1 christos /* fall through */
8768 1.6 christos
8769 1.1 christos dodyn:
8770 1.1 christos if ((input_section->flags & SEC_ALLOC) == 0
8771 1.1 christos || is_vxworks_tls)
8772 1.5 christos break;
8773 1.5 christos
8774 1.5 christos if ((bfd_link_pic (info)
8775 1.5 christos && !(h != NULL
8776 1.5 christos && ((h->root.type == bfd_link_hash_undefined
8777 1.1 christos && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
8778 1.1 christos || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
8779 1.1 christos || (h->root.type == bfd_link_hash_undefweak
8780 1.1 christos && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
8781 1.1 christos && (must_be_dyn_reloc (info, r_type)
8782 1.1 christos || !SYMBOL_CALLS_LOCAL (info, h)))
8783 1.1 christos || (ELIMINATE_COPY_RELOCS
8784 1.1 christos && !bfd_link_pic (info)
8785 1.1 christos && h != NULL
8786 1.1 christos && h->dynindx != -1
8787 1.1 christos && !h->non_got_ref
8788 1.1 christos && !h->def_regular
8789 1.1 christos && !(h->protected_def
8790 1.1 christos && ppc_elf_hash_entry (h)->has_addr16_ha
8791 1.1 christos && ppc_elf_hash_entry (h)->has_addr16_lo
8792 1.1 christos && htab->params->pic_fixup > 0)))
8793 1.1 christos {
8794 1.1 christos int skip;
8795 1.1 christos bfd_byte *loc;
8796 1.1 christos asection *sreloc;
8797 1.1 christos #ifdef DEBUG
8798 1.1 christos fprintf (stderr, "ppc_elf_relocate_section needs to "
8799 1.1 christos "create relocation for %s\n",
8800 1.1 christos (h && h->root.root.string
8801 1.1 christos ? h->root.root.string : "<unknown>"));
8802 1.1 christos #endif
8803 1.1 christos
8804 1.1 christos /* When generating a shared object, these relocations
8805 1.1 christos are copied into the output file to be resolved at run
8806 1.1 christos time. */
8807 1.1 christos sreloc = elf_section_data (input_section)->sreloc;
8808 1.1 christos if (ifunc)
8809 1.1 christos sreloc = htab->reliplt;
8810 1.1 christos if (sreloc == NULL)
8811 1.1 christos return FALSE;
8812 1.1 christos
8813 1.1 christos skip = 0;
8814 1.1 christos outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8815 1.1 christos input_section,
8816 1.1 christos rel->r_offset);
8817 1.1 christos if (outrel.r_offset == (bfd_vma) -1
8818 1.1 christos || outrel.r_offset == (bfd_vma) -2)
8819 1.1 christos skip = (int) outrel.r_offset;
8820 1.1 christos outrel.r_offset += (input_section->output_section->vma
8821 1.1 christos + input_section->output_offset);
8822 1.1 christos
8823 1.1 christos if (skip)
8824 1.1 christos memset (&outrel, 0, sizeof outrel);
8825 1.1 christos else if ((h != NULL
8826 1.1 christos && (h->root.type == bfd_link_hash_undefined
8827 1.1 christos || h->root.type == bfd_link_hash_undefweak))
8828 1.1 christos || !SYMBOL_REFERENCES_LOCAL (info, h))
8829 1.1 christos {
8830 1.1 christos BFD_ASSERT (h->dynindx != -1);
8831 1.1 christos unresolved_reloc = FALSE;
8832 1.1 christos outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
8833 1.1 christos outrel.r_addend = rel->r_addend;
8834 1.1 christos }
8835 1.1 christos else
8836 1.1 christos {
8837 1.1 christos outrel.r_addend = relocation + rel->r_addend;
8838 1.1 christos
8839 1.1 christos if (r_type != R_PPC_ADDR32)
8840 1.1 christos {
8841 1.1 christos long indx = 0;
8842 1.1 christos
8843 1.1 christos if (ifunc != NULL)
8844 1.1 christos {
8845 1.1 christos /* If we get here when building a static
8846 1.1 christos executable, then the libc startup function
8847 1.1 christos responsible for applying indirect function
8848 1.1 christos relocations is going to complain about
8849 1.1 christos the reloc type.
8850 1.1 christos If we get here when building a dynamic
8851 1.1 christos executable, it will be because we have
8852 1.1 christos a text relocation. The dynamic loader
8853 1.1 christos will set the text segment writable and
8854 1.1 christos non-executable to apply text relocations.
8855 1.1 christos So we'll segfault when trying to run the
8856 1.1 christos indirection function to resolve the reloc. */
8857 1.1 christos info->callbacks->einfo
8858 1.1 christos (_("%P: %H: relocation %s for indirect "
8859 1.1 christos "function %s unsupported\n"),
8860 1.1 christos input_bfd, input_section, rel->r_offset,
8861 1.1 christos howto->name,
8862 1.1 christos sym_name);
8863 1.1 christos ret = FALSE;
8864 1.1 christos }
8865 1.1 christos else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8866 1.1 christos ;
8867 1.1 christos else if (sec == NULL || sec->owner == NULL)
8868 1.1 christos {
8869 1.1 christos bfd_set_error (bfd_error_bad_value);
8870 1.1 christos ret = FALSE;
8871 1.1 christos }
8872 1.1 christos else
8873 1.1 christos {
8874 1.1 christos asection *osec;
8875 1.1 christos
8876 1.1 christos /* We are turning this relocation into one
8877 1.1 christos against a section symbol. It would be
8878 1.1 christos proper to subtract the symbol's value,
8879 1.1 christos osec->vma, from the emitted reloc addend,
8880 1.1 christos but ld.so expects buggy relocs.
8881 1.1 christos FIXME: Why not always use a zero index? */
8882 1.1 christos osec = sec->output_section;
8883 1.1 christos indx = elf_section_data (osec)->dynindx;
8884 1.1 christos if (indx == 0)
8885 1.1 christos {
8886 1.1 christos osec = htab->elf.text_index_section;
8887 1.1 christos indx = elf_section_data (osec)->dynindx;
8888 1.1 christos }
8889 1.1 christos BFD_ASSERT (indx != 0);
8890 1.1 christos #ifdef DEBUG
8891 1.1 christos if (indx == 0)
8892 1.1 christos printf ("indx=%ld section=%s flags=%08x name=%s\n",
8893 1.1 christos indx, osec->name, osec->flags,
8894 1.1 christos h->root.root.string);
8895 1.6 christos #endif
8896 1.1 christos }
8897 1.1 christos
8898 1.1 christos outrel.r_info = ELF32_R_INFO (indx, r_type);
8899 1.1 christos }
8900 1.1 christos else if (ifunc != NULL)
8901 1.1 christos outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8902 1.1 christos else
8903 1.1 christos outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8904 1.1 christos }
8905 1.1 christos
8906 1.1 christos loc = sreloc->contents;
8907 1.1 christos loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8908 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8909 1.1 christos
8910 1.1 christos if (skip == -1)
8911 1.1 christos goto copy_reloc;
8912 1.1 christos
8913 1.1 christos /* This reloc will be computed at runtime. We clear the memory
8914 1.1 christos so that it contains predictable value. */
8915 1.1 christos if (! skip
8916 1.1 christos && ((input_section->flags & SEC_ALLOC) != 0
8917 1.1 christos || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
8918 1.1 christos {
8919 1.6 christos relocation = howto->pc_relative ? outrel.r_offset : 0;
8920 1.1 christos addend = 0;
8921 1.1 christos break;
8922 1.1 christos }
8923 1.1 christos }
8924 1.1 christos break;
8925 1.1 christos
8926 1.1 christos case R_PPC_RELAX_PLT:
8927 1.1 christos case R_PPC_RELAX_PLTREL24:
8928 1.1 christos if (h != NULL)
8929 1.1 christos {
8930 1.1 christos struct plt_entry *ent;
8931 1.1 christos bfd_vma got2_addend = 0;
8932 1.1 christos
8933 1.1 christos if (r_type == R_PPC_RELAX_PLTREL24)
8934 1.1 christos {
8935 1.1 christos if (bfd_link_pic (info))
8936 1.1 christos got2_addend = addend;
8937 1.3 christos addend = 0;
8938 1.3 christos }
8939 1.3 christos ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
8940 1.3 christos if (htab->plt_type == PLT_NEW)
8941 1.3 christos relocation = (htab->glink->output_section->vma
8942 1.6 christos + htab->glink->output_offset
8943 1.3 christos + ent->glink_offset);
8944 1.3 christos else
8945 1.3 christos relocation = (htab->plt->output_section->vma
8946 1.3 christos + htab->plt->output_offset
8947 1.3 christos + ent->plt.offset);
8948 1.3 christos }
8949 1.3 christos /* Fall thru */
8950 1.3 christos
8951 1.3 christos case R_PPC_RELAX:
8952 1.3 christos {
8953 1.3 christos const int *stub;
8954 1.3 christos size_t size;
8955 1.3 christos size_t insn_offset = rel->r_offset;
8956 1.3 christos unsigned int insn;
8957 1.3 christos
8958 1.3 christos if (bfd_link_pic (info))
8959 1.1 christos {
8960 1.1 christos relocation -= (input_section->output_section->vma
8961 1.6 christos + input_section->output_offset
8962 1.3 christos + rel->r_offset - 4);
8963 1.1 christos stub = shared_stub_entry;
8964 1.3 christos bfd_put_32 (output_bfd, stub[0], contents + insn_offset - 12);
8965 1.3 christos bfd_put_32 (output_bfd, stub[1], contents + insn_offset - 8);
8966 1.3 christos bfd_put_32 (output_bfd, stub[2], contents + insn_offset - 4);
8967 1.3 christos stub += 3;
8968 1.3 christos size = ARRAY_SIZE (shared_stub_entry) - 3;
8969 1.3 christos }
8970 1.3 christos else
8971 1.3 christos {
8972 1.3 christos stub = stub_entry;
8973 1.3 christos size = ARRAY_SIZE (stub_entry);
8974 1.3 christos }
8975 1.3 christos
8976 1.3 christos relocation += addend;
8977 1.3 christos if (bfd_link_relocatable (info))
8978 1.3 christos relocation = 0;
8979 1.3 christos
8980 1.3 christos /* First insn is HA, second is LO. */
8981 1.3 christos insn = *stub++;
8982 1.3 christos insn |= ((relocation + 0x8000) >> 16) & 0xffff;
8983 1.1 christos bfd_put_32 (output_bfd, insn, contents + insn_offset);
8984 1.1 christos insn_offset += 4;
8985 1.1 christos
8986 1.1 christos insn = *stub++;
8987 1.1 christos insn |= relocation & 0xffff;
8988 1.6 christos bfd_put_32 (output_bfd, insn, contents + insn_offset);
8989 1.6 christos insn_offset += 4;
8990 1.6 christos size -= 2;
8991 1.6 christos
8992 1.6 christos while (size != 0)
8993 1.6 christos {
8994 1.6 christos insn = *stub++;
8995 1.1 christos --size;
8996 1.1 christos bfd_put_32 (output_bfd, insn, contents + insn_offset);
8997 1.1 christos insn_offset += 4;
8998 1.1 christos }
8999 1.1 christos
9000 1.1 christos /* Rewrite the reloc and convert one of the trailing nop
9001 1.1 christos relocs to describe this relocation. */
9002 1.1 christos BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
9003 1.1 christos /* The relocs are at the bottom 2 bytes */
9004 1.1 christos wrel->r_offset = rel->r_offset + d_offset;
9005 1.1 christos wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
9006 1.1 christos wrel->r_addend = rel->r_addend;
9007 1.1 christos memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
9008 1.1 christos wrel++, rel++;
9009 1.1 christos wrel->r_offset += 4;
9010 1.1 christos wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
9011 1.1 christos }
9012 1.1 christos continue;
9013 1.1 christos
9014 1.1 christos /* Indirect .sdata relocation. */
9015 1.1 christos case R_PPC_EMB_SDAI16:
9016 1.1 christos BFD_ASSERT (htab->sdata[0].section != NULL);
9017 1.1 christos if (!is_static_defined (htab->sdata[0].sym))
9018 1.1 christos {
9019 1.1 christos unresolved_reloc = TRUE;
9020 1.1 christos break;
9021 1.1 christos }
9022 1.1 christos relocation
9023 1.1 christos = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
9024 1.1 christos h, relocation, rel);
9025 1.1 christos addend = 0;
9026 1.1 christos break;
9027 1.1 christos
9028 1.1 christos /* Indirect .sdata2 relocation. */
9029 1.1 christos case R_PPC_EMB_SDA2I16:
9030 1.1 christos BFD_ASSERT (htab->sdata[1].section != NULL);
9031 1.1 christos if (!is_static_defined (htab->sdata[1].sym))
9032 1.1 christos {
9033 1.1 christos unresolved_reloc = TRUE;
9034 1.1 christos break;
9035 1.1 christos }
9036 1.1 christos relocation
9037 1.1 christos = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
9038 1.1 christos h, relocation, rel);
9039 1.1 christos addend = 0;
9040 1.1 christos break;
9041 1.1 christos
9042 1.1 christos /* Handle the TOC16 reloc. We want to use the offset within the .got
9043 1.1 christos section, not the actual VMA. This is appropriate when generating
9044 1.1 christos an embedded ELF object, for which the .got section acts like the
9045 1.1 christos AIX .toc section. */
9046 1.1 christos case R_PPC_TOC16: /* phony GOT16 relocations */
9047 1.6 christos if (sec == NULL || sec->output_section == NULL)
9048 1.6 christos {
9049 1.6 christos unresolved_reloc = TRUE;
9050 1.6 christos break;
9051 1.1 christos }
9052 1.1 christos BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
9053 1.1 christos ".got") == 0
9054 1.1 christos || strcmp (bfd_get_section_name (sec->owner, sec),
9055 1.1 christos ".cgot") == 0);
9056 1.1 christos
9057 1.1 christos addend -= sec->output_section->vma + sec->output_offset + 0x8000;
9058 1.1 christos break;
9059 1.1 christos
9060 1.1 christos case R_PPC_PLTREL24:
9061 1.1 christos if (h != NULL && ifunc == NULL)
9062 1.1 christos {
9063 1.1 christos struct plt_entry *ent;
9064 1.1 christos
9065 1.1 christos ent = find_plt_ent (&h->plt.plist, got2,
9066 1.1 christos bfd_link_pic (info) ? addend : 0);
9067 1.1 christos if (ent == NULL
9068 1.1 christos || htab->plt == NULL)
9069 1.1 christos {
9070 1.1 christos /* We didn't make a PLT entry for this symbol. This
9071 1.1 christos happens when statically linking PIC code, or when
9072 1.1 christos using -Bsymbolic. */
9073 1.1 christos }
9074 1.1 christos else
9075 1.1 christos {
9076 1.1 christos /* Relocation is to the entry for this symbol in the
9077 1.1 christos procedure linkage table. */
9078 1.1 christos unresolved_reloc = FALSE;
9079 1.1 christos if (htab->plt_type == PLT_NEW)
9080 1.1 christos relocation = (htab->glink->output_section->vma
9081 1.1 christos + htab->glink->output_offset
9082 1.1 christos + ent->glink_offset);
9083 1.1 christos else
9084 1.1 christos relocation = (htab->plt->output_section->vma
9085 1.1 christos + htab->plt->output_offset
9086 1.1 christos + ent->plt.offset);
9087 1.1 christos }
9088 1.1 christos }
9089 1.1 christos
9090 1.1 christos /* R_PPC_PLTREL24 is rather special. If non-zero, the
9091 1.1 christos addend specifies the GOT pointer offset within .got2.
9092 1.1 christos Don't apply it to the relocation field. */
9093 1.1 christos addend = 0;
9094 1.1 christos break;
9095 1.1 christos
9096 1.3 christos /* Relocate against _SDA_BASE_. */
9097 1.3 christos case R_PPC_SDAREL16:
9098 1.1 christos {
9099 1.1 christos const char *name;
9100 1.1 christos struct elf_link_hash_entry *sda = htab->sdata[0].sym;
9101 1.1 christos
9102 1.1 christos if (sec == NULL
9103 1.1 christos || sec->output_section == NULL
9104 1.1 christos || !is_static_defined (sda))
9105 1.1 christos {
9106 1.1 christos unresolved_reloc = TRUE;
9107 1.1 christos break;
9108 1.1 christos }
9109 1.1 christos addend -= SYM_VAL (sda);
9110 1.1 christos
9111 1.1 christos name = bfd_get_section_name (output_bfd, sec->output_section);
9112 1.1 christos if (!(strcmp (name, ".sdata") == 0
9113 1.1 christos || strcmp (name, ".sbss") == 0))
9114 1.1 christos {
9115 1.1 christos info->callbacks->einfo
9116 1.1 christos (_("%P: %B: the target (%s) of a %s relocation is "
9117 1.1 christos "in the wrong output section (%s)\n"),
9118 1.1 christos input_bfd,
9119 1.1 christos sym_name,
9120 1.1 christos howto->name,
9121 1.1 christos name);
9122 1.1 christos }
9123 1.1 christos }
9124 1.1 christos break;
9125 1.1 christos
9126 1.3 christos /* Relocate against _SDA2_BASE_. */
9127 1.3 christos case R_PPC_EMB_SDA2REL:
9128 1.1 christos {
9129 1.1 christos const char *name;
9130 1.1 christos struct elf_link_hash_entry *sda = htab->sdata[1].sym;
9131 1.1 christos
9132 1.1 christos if (sec == NULL
9133 1.1 christos || sec->output_section == NULL
9134 1.1 christos || !is_static_defined (sda))
9135 1.1 christos {
9136 1.1 christos unresolved_reloc = TRUE;
9137 1.1 christos break;
9138 1.1 christos }
9139 1.1 christos addend -= SYM_VAL (sda);
9140 1.1 christos
9141 1.3 christos name = bfd_get_section_name (output_bfd, sec->output_section);
9142 1.3 christos if (!(strcmp (name, ".sdata2") == 0
9143 1.3 christos || strcmp (name, ".sbss2") == 0))
9144 1.6 christos {
9145 1.1 christos info->callbacks->einfo
9146 1.1 christos (_("%P: %B: the target (%s) of a %s relocation is "
9147 1.3 christos "in the wrong output section (%s)\n"),
9148 1.3 christos input_bfd,
9149 1.3 christos sym_name,
9150 1.6 christos howto->name,
9151 1.1 christos name);
9152 1.1 christos }
9153 1.3 christos }
9154 1.3 christos break;
9155 1.3 christos
9156 1.6 christos case R_PPC_VLE_LO16A:
9157 1.1 christos relocation = relocation + addend;
9158 1.1 christos ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9159 1.3 christos relocation, split16a_type);
9160 1.3 christos goto copy_reloc;
9161 1.3 christos
9162 1.6 christos case R_PPC_VLE_LO16D:
9163 1.1 christos relocation = relocation + addend;
9164 1.1 christos ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9165 1.3 christos relocation, split16d_type);
9166 1.3 christos goto copy_reloc;
9167 1.3 christos
9168 1.6 christos case R_PPC_VLE_HI16A:
9169 1.1 christos relocation = (relocation + addend) >> 16;
9170 1.1 christos ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9171 1.3 christos relocation, split16a_type);
9172 1.3 christos goto copy_reloc;
9173 1.3 christos
9174 1.6 christos case R_PPC_VLE_HI16D:
9175 1.1 christos relocation = (relocation + addend) >> 16;
9176 1.1 christos ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9177 1.1 christos relocation, split16d_type);
9178 1.1 christos goto copy_reloc;
9179 1.1 christos
9180 1.1 christos case R_PPC_VLE_HA16A:
9181 1.1 christos relocation = (relocation + addend + 0x8000) >> 16;
9182 1.1 christos ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9183 1.1 christos relocation, split16a_type);
9184 1.3 christos goto copy_reloc;
9185 1.1 christos
9186 1.1 christos case R_PPC_VLE_HA16D:
9187 1.1 christos relocation = (relocation + addend + 0x8000) >> 16;
9188 1.1 christos ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9189 1.1 christos relocation, split16d_type);
9190 1.1 christos goto copy_reloc;
9191 1.1 christos
9192 1.1 christos /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9193 1.1 christos case R_PPC_EMB_SDA21:
9194 1.3 christos case R_PPC_VLE_SDA21:
9195 1.3 christos case R_PPC_EMB_RELSDA:
9196 1.1 christos case R_PPC_VLE_SDA21_LO:
9197 1.1 christos {
9198 1.1 christos const char *name;
9199 1.1 christos int reg;
9200 1.3 christos unsigned int insn;
9201 1.3 christos struct elf_link_hash_entry *sda = NULL;
9202 1.1 christos
9203 1.1 christos if (sec == NULL || sec->output_section == NULL)
9204 1.1 christos {
9205 1.1 christos unresolved_reloc = TRUE;
9206 1.1 christos break;
9207 1.1 christos }
9208 1.1 christos
9209 1.1 christos name = bfd_get_section_name (output_bfd, sec->output_section);
9210 1.1 christos if (strcmp (name, ".sdata") == 0
9211 1.1 christos || strcmp (name, ".sbss") == 0)
9212 1.1 christos {
9213 1.1 christos reg = 13;
9214 1.1 christos sda = htab->sdata[0].sym;
9215 1.1 christos }
9216 1.1 christos else if (strcmp (name, ".sdata2") == 0
9217 1.1 christos || strcmp (name, ".sbss2") == 0)
9218 1.1 christos {
9219 1.1 christos reg = 2;
9220 1.1 christos sda = htab->sdata[1].sym;
9221 1.1 christos }
9222 1.1 christos else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9223 1.6 christos || strcmp (name, ".PPC.EMB.sbss0") == 0)
9224 1.1 christos {
9225 1.1 christos reg = 0;
9226 1.1 christos }
9227 1.1 christos else
9228 1.1 christos {
9229 1.1 christos info->callbacks->einfo
9230 1.1 christos (_("%P: %B: the target (%s) of a %s relocation is "
9231 1.1 christos "in the wrong output section (%s)\n"),
9232 1.1 christos input_bfd,
9233 1.1 christos sym_name,
9234 1.1 christos howto->name,
9235 1.1 christos name);
9236 1.3 christos
9237 1.1 christos bfd_set_error (bfd_error_bad_value);
9238 1.1 christos ret = FALSE;
9239 1.1 christos goto copy_reloc;
9240 1.1 christos }
9241 1.3 christos
9242 1.3 christos if (sda != NULL)
9243 1.3 christos {
9244 1.3 christos if (!is_static_defined (sda))
9245 1.3 christos {
9246 1.3 christos unresolved_reloc = TRUE;
9247 1.3 christos break;
9248 1.3 christos }
9249 1.3 christos addend -= SYM_VAL (sda);
9250 1.3 christos }
9251 1.3 christos
9252 1.3 christos insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
9253 1.3 christos if (reg == 0
9254 1.3 christos && (r_type == R_PPC_VLE_SDA21
9255 1.3 christos || r_type == R_PPC_VLE_SDA21_LO))
9256 1.3 christos {
9257 1.3 christos relocation = relocation + addend;
9258 1.3 christos addend = 0;
9259 1.3 christos
9260 1.3 christos /* Force e_li insn, keeping RT from original insn. */
9261 1.6 christos insn &= 0x1f << 21;
9262 1.1 christos insn |= 28u << 26;
9263 1.1 christos
9264 1.1 christos /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9265 1.1 christos /* Top 4 bits of value to 17..20. */
9266 1.1 christos insn |= (relocation & 0xf0000) >> 5;
9267 1.3 christos /* Next 5 bits of the value to 11..15. */
9268 1.1 christos insn |= (relocation & 0xf800) << 5;
9269 1.1 christos /* And the final 11 bits of the value to bits 21 to 31. */
9270 1.3 christos insn |= relocation & 0x7ff;
9271 1.1 christos
9272 1.1 christos bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9273 1.1 christos
9274 1.1 christos if (r_type == R_PPC_VLE_SDA21
9275 1.1 christos && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9276 1.1 christos goto overflow;
9277 1.1 christos goto copy_reloc;
9278 1.1 christos }
9279 1.1 christos else if (r_type == R_PPC_EMB_SDA21
9280 1.1 christos || r_type == R_PPC_VLE_SDA21
9281 1.1 christos || r_type == R_PPC_VLE_SDA21_LO)
9282 1.1 christos {
9283 1.1 christos /* Fill in register field. */
9284 1.1 christos insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
9285 1.1 christos }
9286 1.1 christos bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9287 1.1 christos }
9288 1.1 christos break;
9289 1.1 christos
9290 1.1 christos case R_PPC_VLE_SDAREL_LO16A:
9291 1.1 christos case R_PPC_VLE_SDAREL_LO16D:
9292 1.1 christos case R_PPC_VLE_SDAREL_HI16A:
9293 1.3 christos case R_PPC_VLE_SDAREL_HI16D:
9294 1.3 christos case R_PPC_VLE_SDAREL_HA16A:
9295 1.1 christos case R_PPC_VLE_SDAREL_HA16D:
9296 1.1 christos {
9297 1.1 christos bfd_vma value;
9298 1.1 christos const char *name;
9299 1.3 christos //int reg;
9300 1.3 christos struct elf_link_hash_entry *sda = NULL;
9301 1.1 christos
9302 1.1 christos if (sec == NULL || sec->output_section == NULL)
9303 1.1 christos {
9304 1.1 christos unresolved_reloc = TRUE;
9305 1.1 christos break;
9306 1.1 christos }
9307 1.1 christos
9308 1.1 christos name = bfd_get_section_name (output_bfd, sec->output_section);
9309 1.1 christos if (strcmp (name, ".sdata") == 0
9310 1.1 christos || strcmp (name, ".sbss") == 0)
9311 1.1 christos {
9312 1.1 christos //reg = 13;
9313 1.1 christos sda = htab->sdata[0].sym;
9314 1.1 christos }
9315 1.1 christos else if (strcmp (name, ".sdata2") == 0
9316 1.1 christos || strcmp (name, ".sbss2") == 0)
9317 1.6 christos {
9318 1.1 christos //reg = 2;
9319 1.1 christos sda = htab->sdata[1].sym;
9320 1.1 christos }
9321 1.1 christos else
9322 1.1 christos {
9323 1.1 christos (*_bfd_error_handler)
9324 1.1 christos (_("%B: the target (%s) of a %s relocation is "
9325 1.1 christos "in the wrong output section (%s)"),
9326 1.1 christos input_bfd,
9327 1.1 christos sym_name,
9328 1.1 christos howto->name,
9329 1.3 christos name);
9330 1.3 christos
9331 1.3 christos bfd_set_error (bfd_error_bad_value);
9332 1.3 christos ret = FALSE;
9333 1.3 christos goto copy_reloc;
9334 1.3 christos }
9335 1.3 christos
9336 1.3 christos if (sda != NULL)
9337 1.3 christos {
9338 1.3 christos if (!is_static_defined (sda))
9339 1.3 christos {
9340 1.3 christos unresolved_reloc = TRUE;
9341 1.3 christos break;
9342 1.3 christos }
9343 1.3 christos }
9344 1.3 christos
9345 1.3 christos value = (sda->root.u.def.section->output_section->vma
9346 1.3 christos + sda->root.u.def.section->output_offset
9347 1.3 christos + addend);
9348 1.3 christos
9349 1.3 christos if (r_type == R_PPC_VLE_SDAREL_LO16A)
9350 1.3 christos ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9351 1.3 christos value, split16a_type);
9352 1.3 christos else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9353 1.3 christos ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9354 1.3 christos value, split16d_type);
9355 1.3 christos else if (r_type == R_PPC_VLE_SDAREL_HI16A)
9356 1.3 christos {
9357 1.3 christos value = value >> 16;
9358 1.3 christos ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9359 1.3 christos value, split16a_type);
9360 1.3 christos }
9361 1.3 christos else if (r_type == R_PPC_VLE_SDAREL_HI16D)
9362 1.1 christos {
9363 1.1 christos value = value >> 16;
9364 1.6 christos ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9365 1.1 christos value, split16d_type);
9366 1.1 christos }
9367 1.1 christos else if (r_type == R_PPC_VLE_SDAREL_HA16A)
9368 1.1 christos {
9369 1.1 christos value = (value + 0x8000) >> 16;
9370 1.1 christos ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9371 1.1 christos value, split16a_type);
9372 1.1 christos }
9373 1.1 christos else if (r_type == R_PPC_VLE_SDAREL_HA16D)
9374 1.1 christos {
9375 1.1 christos value = (value + 0x8000) >> 16;
9376 1.1 christos ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9377 1.1 christos value, split16d_type);
9378 1.1 christos }
9379 1.1 christos }
9380 1.1 christos goto copy_reloc;
9381 1.1 christos
9382 1.1 christos /* Relocate against the beginning of the section. */
9383 1.1 christos case R_PPC_SECTOFF:
9384 1.1 christos case R_PPC_SECTOFF_LO:
9385 1.1 christos case R_PPC_SECTOFF_HI:
9386 1.1 christos case R_PPC_SECTOFF_HA:
9387 1.1 christos if (sec == NULL || sec->output_section == NULL)
9388 1.1 christos {
9389 1.1 christos unresolved_reloc = TRUE;
9390 1.1 christos break;
9391 1.1 christos }
9392 1.1 christos addend -= sec->output_section->vma;
9393 1.1 christos break;
9394 1.1 christos
9395 1.1 christos /* Negative relocations. */
9396 1.1 christos case R_PPC_EMB_NADDR32:
9397 1.1 christos case R_PPC_EMB_NADDR16:
9398 1.1 christos case R_PPC_EMB_NADDR16_LO:
9399 1.1 christos case R_PPC_EMB_NADDR16_HI:
9400 1.1 christos case R_PPC_EMB_NADDR16_HA:
9401 1.1 christos addend -= 2 * relocation;
9402 1.1 christos break;
9403 1.1 christos
9404 1.1 christos case R_PPC_COPY:
9405 1.1 christos case R_PPC_GLOB_DAT:
9406 1.1 christos case R_PPC_JMP_SLOT:
9407 1.1 christos case R_PPC_RELATIVE:
9408 1.1 christos case R_PPC_IRELATIVE:
9409 1.1 christos case R_PPC_PLT32:
9410 1.1 christos case R_PPC_PLTREL32:
9411 1.1 christos case R_PPC_PLT16_LO:
9412 1.6 christos case R_PPC_PLT16_HI:
9413 1.1 christos case R_PPC_PLT16_HA:
9414 1.1 christos case R_PPC_ADDR30:
9415 1.1 christos case R_PPC_EMB_RELSEC16:
9416 1.1 christos case R_PPC_EMB_RELST_LO:
9417 1.1 christos case R_PPC_EMB_RELST_HI:
9418 1.1 christos case R_PPC_EMB_RELST_HA:
9419 1.1 christos case R_PPC_EMB_BIT_FLD:
9420 1.1 christos info->callbacks->einfo
9421 1.1 christos (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9422 1.1 christos input_bfd,
9423 1.6 christos howto->name,
9424 1.1 christos sym_name);
9425 1.1 christos
9426 1.1 christos bfd_set_error (bfd_error_invalid_operation);
9427 1.1 christos ret = FALSE;
9428 1.1 christos goto copy_reloc;
9429 1.1 christos }
9430 1.1 christos
9431 1.1 christos /* Do any further special processing. */
9432 1.1 christos switch (r_type)
9433 1.1 christos {
9434 1.1 christos default:
9435 1.1 christos break;
9436 1.1 christos
9437 1.1 christos case R_PPC_ADDR16_HA:
9438 1.1 christos case R_PPC_REL16_HA:
9439 1.1 christos case R_PPC_REL16DX_HA:
9440 1.1 christos case R_PPC_SECTOFF_HA:
9441 1.1 christos case R_PPC_TPREL16_HA:
9442 1.1 christos case R_PPC_DTPREL16_HA:
9443 1.1 christos case R_PPC_EMB_NADDR16_HA:
9444 1.1 christos case R_PPC_EMB_RELST_HA:
9445 1.1 christos /* It's just possible that this symbol is a weak symbol
9446 1.1 christos that's not actually defined anywhere. In that case,
9447 1.1 christos 'sec' would be NULL, and we should leave the symbol
9448 1.1 christos alone (it will be set to zero elsewhere in the link). */
9449 1.1 christos if (sec == NULL)
9450 1.1 christos break;
9451 1.1 christos /* Fall thru */
9452 1.1 christos
9453 1.1 christos case R_PPC_PLT16_HA:
9454 1.1 christos case R_PPC_GOT16_HA:
9455 1.1 christos case R_PPC_GOT_TLSGD16_HA:
9456 1.1 christos case R_PPC_GOT_TLSLD16_HA:
9457 1.1 christos case R_PPC_GOT_TPREL16_HA:
9458 1.1 christos case R_PPC_GOT_DTPREL16_HA:
9459 1.1 christos /* Add 0x10000 if sign bit in 0:15 is set.
9460 1.1 christos Bits 0:15 are not used. */
9461 1.1 christos addend += 0x8000;
9462 1.1 christos break;
9463 1.1 christos
9464 1.1 christos case R_PPC_ADDR16:
9465 1.1 christos case R_PPC_ADDR16_LO:
9466 1.1 christos case R_PPC_GOT16:
9467 1.1 christos case R_PPC_GOT16_LO:
9468 1.1 christos case R_PPC_SDAREL16:
9469 1.1 christos case R_PPC_SECTOFF:
9470 1.1 christos case R_PPC_SECTOFF_LO:
9471 1.1 christos case R_PPC_DTPREL16:
9472 1.1 christos case R_PPC_DTPREL16_LO:
9473 1.6 christos case R_PPC_TPREL16:
9474 1.6 christos case R_PPC_TPREL16_LO:
9475 1.1 christos case R_PPC_GOT_TLSGD16:
9476 1.1 christos case R_PPC_GOT_TLSGD16_LO:
9477 1.1 christos case R_PPC_GOT_TLSLD16:
9478 1.1 christos case R_PPC_GOT_TLSLD16_LO:
9479 1.1 christos case R_PPC_GOT_DTPREL16:
9480 1.1 christos case R_PPC_GOT_DTPREL16_LO:
9481 1.1 christos case R_PPC_GOT_TPREL16:
9482 1.6 christos case R_PPC_GOT_TPREL16_LO:
9483 1.6 christos {
9484 1.6 christos /* The 32-bit ABI lacks proper relocations to deal with
9485 1.1 christos certain 64-bit instructions. Prevent damage to bits
9486 1.1 christos that make up part of the insn opcode. */
9487 1.6 christos unsigned int insn, mask, lobit;
9488 1.1 christos
9489 1.1 christos insn = bfd_get_32 (output_bfd,
9490 1.1 christos contents + rel->r_offset - d_offset);
9491 1.1 christos mask = 0;
9492 1.1 christos if (is_insn_ds_form (insn))
9493 1.1 christos mask = 3;
9494 1.1 christos else if (is_insn_dq_form (insn))
9495 1.1 christos mask = 15;
9496 1.1 christos else
9497 1.1 christos break;
9498 1.1 christos relocation += addend;
9499 1.1 christos addend = insn & mask;
9500 1.1 christos lobit = mask & relocation;
9501 1.1 christos if (lobit != 0)
9502 1.1 christos {
9503 1.1 christos relocation ^= lobit;
9504 1.1 christos info->callbacks->einfo
9505 1.1 christos (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
9506 1.1 christos input_bfd, input_section, rel->r_offset,
9507 1.1 christos howto->name, sym_name, mask + 1);
9508 1.1 christos bfd_set_error (bfd_error_bad_value);
9509 1.1 christos ret = FALSE;
9510 1.1 christos }
9511 1.1 christos }
9512 1.1 christos break;
9513 1.1 christos }
9514 1.1 christos
9515 1.1 christos #ifdef DEBUG
9516 1.1 christos fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9517 1.1 christos "offset = %ld, addend = %ld\n",
9518 1.1 christos howto->name,
9519 1.1 christos (int) r_type,
9520 1.1 christos sym_name,
9521 1.1 christos r_symndx,
9522 1.1 christos (long) rel->r_offset,
9523 1.1 christos (long) addend);
9524 1.3 christos #endif
9525 1.3 christos
9526 1.3 christos if (unresolved_reloc
9527 1.3 christos && !((input_section->flags & SEC_DEBUGGING) != 0
9528 1.3 christos && h->def_dynamic)
9529 1.3 christos && _bfd_elf_section_offset (output_bfd, info, input_section,
9530 1.3 christos rel->r_offset) != (bfd_vma) -1)
9531 1.3 christos {
9532 1.3 christos info->callbacks->einfo
9533 1.3 christos (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
9534 1.3 christos input_bfd, input_section, rel->r_offset,
9535 1.3 christos howto->name,
9536 1.3 christos sym_name);
9537 1.3 christos ret = FALSE;
9538 1.3 christos }
9539 1.3 christos
9540 1.3 christos /* 16-bit fields in insns mostly have signed values, but a
9541 1.3 christos few insns have 16-bit unsigned values. Really, we should
9542 1.3 christos have different reloc types. */
9543 1.3 christos if (howto->complain_on_overflow != complain_overflow_dont
9544 1.3 christos && howto->dst_mask == 0xffff
9545 1.3 christos && (input_section->flags & SEC_CODE) != 0)
9546 1.3 christos {
9547 1.3 christos enum complain_overflow complain = complain_overflow_signed;
9548 1.3 christos
9549 1.3 christos if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9550 1.3 christos {
9551 1.3 christos unsigned int insn;
9552 1.3 christos
9553 1.6 christos insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9554 1.6 christos if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9555 1.6 christos complain = complain_overflow_bitfield;
9556 1.6 christos else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9557 1.6 christos || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9558 1.6 christos || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
9559 1.6 christos complain = complain_overflow_unsigned;
9560 1.6 christos }
9561 1.6 christos if (howto->complain_on_overflow != complain)
9562 1.6 christos {
9563 1.6 christos alt_howto = *howto;
9564 1.6 christos alt_howto.complain_on_overflow = complain;
9565 1.6 christos howto = &alt_howto;
9566 1.6 christos }
9567 1.6 christos }
9568 1.6 christos
9569 1.6 christos if (r_type == R_PPC_REL16DX_HA)
9570 1.6 christos {
9571 1.6 christos /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9572 1.6 christos if (rel->r_offset + 4 > input_section->size)
9573 1.6 christos r = bfd_reloc_outofrange;
9574 1.6 christos else
9575 1.6 christos {
9576 1.6 christos unsigned int insn;
9577 1.1 christos
9578 1.1 christos relocation += addend;
9579 1.1 christos relocation -= (rel->r_offset
9580 1.1 christos + input_section->output_offset
9581 1.1 christos + input_section->output_section->vma);
9582 1.3 christos relocation >>= 16;
9583 1.5 christos insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9584 1.5 christos insn &= ~0x1fffc1;
9585 1.5 christos insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
9586 1.5 christos bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9587 1.5 christos r = bfd_reloc_ok;
9588 1.5 christos }
9589 1.5 christos }
9590 1.6 christos else
9591 1.6 christos r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9592 1.6 christos rel->r_offset, relocation, addend);
9593 1.1 christos
9594 1.1 christos if (r != bfd_reloc_ok)
9595 1.1 christos {
9596 1.1 christos if (r == bfd_reloc_overflow)
9597 1.1 christos {
9598 1.1 christos overflow:
9599 1.1 christos /* On code like "if (foo) foo();" don't report overflow
9600 1.1 christos on a branch to zero when foo is undefined. */
9601 1.1 christos if (!warned
9602 1.1 christos && !(h != NULL
9603 1.6 christos && (h->root.type == bfd_link_hash_undefweak
9604 1.6 christos || h->root.type == bfd_link_hash_undefined)
9605 1.6 christos && is_branch_reloc (r_type)))
9606 1.6 christos info->callbacks->reloc_overflow
9607 1.6 christos (info, (h ? &h->root : NULL), sym_name, howto->name,
9608 1.6 christos rel->r_addend, input_bfd, input_section, rel->r_offset);
9609 1.6 christos }
9610 1.6 christos else
9611 1.6 christos {
9612 1.6 christos info->callbacks->einfo
9613 1.6 christos (_("%P: %H: %s reloc against `%s': error %d\n"),
9614 1.6 christos input_bfd, input_section, rel->r_offset,
9615 1.6 christos howto->name, sym_name, (int) r);
9616 1.6 christos ret = FALSE;
9617 1.6 christos }
9618 1.6 christos }
9619 1.6 christos copy_reloc:
9620 1.6 christos if (wrel != rel)
9621 1.6 christos *wrel = *rel;
9622 1.6 christos }
9623 1.6 christos
9624 1.6 christos if (wrel != rel)
9625 1.6 christos {
9626 1.6 christos Elf_Internal_Shdr *rel_hdr;
9627 1.6 christos size_t deleted = rel - wrel;
9628 1.1 christos
9629 1.1 christos rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
9630 1.1 christos rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9631 1.1 christos if (rel_hdr->sh_size == 0)
9632 1.1 christos {
9633 1.1 christos /* It is too late to remove an empty reloc section. Leave
9634 1.3 christos one NONE reloc.
9635 1.3 christos ??? What is wrong with an empty section??? */
9636 1.3 christos rel_hdr->sh_size = rel_hdr->sh_entsize;
9637 1.3 christos deleted -= 1;
9638 1.3 christos wrel++;
9639 1.3 christos }
9640 1.3 christos relend = wrel;
9641 1.3 christos rel_hdr = _bfd_elf_single_rel_hdr (input_section);
9642 1.3 christos rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9643 1.3 christos input_section->reloc_count -= deleted;
9644 1.3 christos }
9645 1.3 christos
9646 1.6 christos #ifdef DEBUG
9647 1.3 christos fprintf (stderr, "\n");
9648 1.3 christos #endif
9649 1.3 christos
9650 1.3 christos if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9651 1.3 christos && input_section->size != input_section->rawsize
9652 1.3 christos && (strcmp (input_section->output_section->name, ".init") == 0
9653 1.3 christos || strcmp (input_section->output_section->name, ".fini") == 0))
9654 1.3 christos {
9655 1.3 christos /* Branch around the trampolines. */
9656 1.3 christos unsigned int insn = B + input_section->size - input_section->rawsize;
9657 1.3 christos bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9658 1.3 christos }
9659 1.3 christos
9660 1.3 christos if (htab->params->ppc476_workaround
9661 1.3 christos && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9662 1.3 christos && (!bfd_link_relocatable (info)
9663 1.3 christos || (input_section->output_section->alignment_power
9664 1.3 christos >= htab->params->pagesize_p2)))
9665 1.3 christos {
9666 1.3 christos bfd_vma start_addr, end_addr, addr;
9667 1.3 christos bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9668 1.3 christos
9669 1.3 christos if (relax_info->workaround_size != 0)
9670 1.3 christos {
9671 1.3 christos bfd_byte *p;
9672 1.3 christos unsigned int n;
9673 1.3 christos bfd_byte fill[4];
9674 1.3 christos
9675 1.3 christos bfd_put_32 (input_bfd, BA, fill);
9676 1.3 christos p = contents + input_section->size - relax_info->workaround_size;
9677 1.3 christos n = relax_info->workaround_size >> 2;
9678 1.3 christos while (n--)
9679 1.3 christos {
9680 1.3 christos memcpy (p, fill, 4);
9681 1.3 christos p += 4;
9682 1.3 christos }
9683 1.3 christos }
9684 1.3 christos
9685 1.3 christos /* The idea is: Replace the last instruction on a page with a
9686 1.3 christos branch to a patch area. Put the insn there followed by a
9687 1.3 christos branch back to the next page. Complicated a little by
9688 1.3 christos needing to handle moved conditional branches, and by not
9689 1.3 christos wanting to touch data-in-text. */
9690 1.3 christos
9691 1.3 christos start_addr = (input_section->output_section->vma
9692 1.3 christos + input_section->output_offset);
9693 1.3 christos end_addr = (start_addr + input_section->size
9694 1.3 christos - relax_info->workaround_size);
9695 1.3 christos for (addr = ((start_addr & -pagesize) + pagesize - 4);
9696 1.3 christos addr < end_addr;
9697 1.3 christos addr += pagesize)
9698 1.3 christos {
9699 1.3 christos bfd_vma offset = addr - start_addr;
9700 1.3 christos Elf_Internal_Rela *lo, *hi;
9701 1.3 christos bfd_boolean is_data;
9702 1.3 christos bfd_vma patch_off, patch_addr;
9703 1.3 christos unsigned int insn;
9704 1.3 christos
9705 1.3 christos /* Do we have a data reloc at this offset? If so, leave
9706 1.3 christos the word alone. */
9707 1.3 christos is_data = FALSE;
9708 1.3 christos lo = relocs;
9709 1.3 christos hi = relend;
9710 1.3 christos rel = NULL;
9711 1.3 christos while (lo < hi)
9712 1.3 christos {
9713 1.3 christos rel = lo + (hi - lo) / 2;
9714 1.3 christos if (rel->r_offset < offset)
9715 1.3 christos lo = rel + 1;
9716 1.3 christos else if (rel->r_offset > offset + 3)
9717 1.3 christos hi = rel;
9718 1.3 christos else
9719 1.3 christos {
9720 1.3 christos switch (ELF32_R_TYPE (rel->r_info))
9721 1.3 christos {
9722 1.3 christos case R_PPC_ADDR32:
9723 1.3 christos case R_PPC_UADDR32:
9724 1.3 christos case R_PPC_REL32:
9725 1.3 christos case R_PPC_ADDR30:
9726 1.3 christos is_data = TRUE;
9727 1.3 christos break;
9728 1.3 christos default:
9729 1.3 christos break;
9730 1.3 christos }
9731 1.3 christos break;
9732 1.3 christos }
9733 1.3 christos }
9734 1.3 christos if (is_data)
9735 1.3 christos continue;
9736 1.3 christos
9737 1.3 christos /* Some instructions can be left alone too. Unconditional
9738 1.3 christos branches, except for bcctr with BO=0x14 (bctr, bctrl),
9739 1.3 christos avoid the icache failure.
9740 1.3 christos
9741 1.3 christos The problem occurs due to prefetch across a page boundary
9742 1.3 christos where stale instructions can be fetched from the next
9743 1.3 christos page, and the mechanism for flushing these bad
9744 1.3 christos instructions fails under certain circumstances. The
9745 1.3 christos unconditional branches:
9746 1.3 christos 1) Branch: b, bl, ba, bla,
9747 1.3 christos 2) Branch Conditional: bc, bca, bcl, bcla,
9748 1.3 christos 3) Branch Conditional to Link Register: bclr, bclrl,
9749 1.3 christos where (2) and (3) have BO=0x14 making them unconditional,
9750 1.3 christos prevent the bad prefetch because the prefetch itself is
9751 1.3 christos affected by these instructions. This happens even if the
9752 1.3 christos instruction is not executed.
9753 1.3 christos
9754 1.3 christos A bctr example:
9755 1.3 christos .
9756 1.6 christos . lis 9,new_page@ha
9757 1.6 christos . addi 9,9,new_page@l
9758 1.6 christos . mtctr 9
9759 1.6 christos . bctr
9760 1.3 christos . nop
9761 1.6 christos . nop
9762 1.6 christos . new_page:
9763 1.3 christos .
9764 1.3 christos The bctr is not predicted taken due to ctr not being
9765 1.3 christos ready, so prefetch continues on past the bctr into the
9766 1.3 christos new page which might have stale instructions. If they
9767 1.3 christos fail to be flushed, then they will be executed after the
9768 1.3 christos bctr executes. Either of the following modifications
9769 1.3 christos prevent the bad prefetch from happening in the first
9770 1.3 christos place:
9771 1.3 christos .
9772 1.3 christos . lis 9,new_page@ha lis 9,new_page@ha
9773 1.3 christos . addi 9,9,new_page@l addi 9,9,new_page@l
9774 1.3 christos . mtctr 9 mtctr 9
9775 1.3 christos . bctr bctr
9776 1.3 christos . nop b somewhere_else
9777 1.3 christos . b somewhere_else nop
9778 1.3 christos . new_page: new_page:
9779 1.3 christos . */
9780 1.3 christos insn = bfd_get_32 (input_bfd, contents + offset);
9781 1.3 christos if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9782 1.3 christos || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9783 1.5 christos && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9784 1.5 christos || ((insn & (0x3f << 26)) == (19u << 26)
9785 1.3 christos && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9786 1.3 christos && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9787 1.3 christos continue;
9788 1.3 christos
9789 1.3 christos patch_addr = (start_addr + input_section->size
9790 1.3 christos - relax_info->workaround_size);
9791 1.3 christos patch_addr = (patch_addr + 15) & -16;
9792 1.3 christos patch_off = patch_addr - start_addr;
9793 1.3 christos bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9794 1.3 christos
9795 1.3 christos if (rel != NULL
9796 1.3 christos && rel->r_offset >= offset
9797 1.5 christos && rel->r_offset < offset + 4)
9798 1.5 christos {
9799 1.5 christos asection *sreloc;
9800 1.5 christos
9801 1.5 christos /* If the insn we are patching had a reloc, adjust the
9802 1.5 christos reloc r_offset so that the reloc applies to the moved
9803 1.5 christos location. This matters for -r and --emit-relocs. */
9804 1.5 christos if (rel + 1 != relend)
9805 1.5 christos {
9806 1.5 christos Elf_Internal_Rela tmp = *rel;
9807 1.5 christos
9808 1.5 christos /* Keep the relocs sorted by r_offset. */
9809 1.5 christos memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9810 1.5 christos relend[-1] = tmp;
9811 1.5 christos }
9812 1.5 christos relend[-1].r_offset += patch_off - offset;
9813 1.5 christos
9814 1.5 christos /* Adjust REL16 addends too. */
9815 1.5 christos switch (ELF32_R_TYPE (relend[-1].r_info))
9816 1.5 christos {
9817 1.5 christos case R_PPC_REL16:
9818 1.5 christos case R_PPC_REL16_LO:
9819 1.5 christos case R_PPC_REL16_HI:
9820 1.5 christos case R_PPC_REL16_HA:
9821 1.5 christos relend[-1].r_addend += patch_off - offset;
9822 1.5 christos break;
9823 1.5 christos default:
9824 1.5 christos break;
9825 1.5 christos }
9826 1.5 christos
9827 1.5 christos /* If we are building a PIE or shared library with
9828 1.5 christos non-PIC objects, perhaps we had a dynamic reloc too?
9829 1.5 christos If so, the dynamic reloc must move with the insn. */
9830 1.5 christos sreloc = elf_section_data (input_section)->sreloc;
9831 1.5 christos if (sreloc != NULL)
9832 1.5 christos {
9833 1.5 christos Elf32_External_Rela *slo, *shi, *srelend;
9834 1.5 christos bfd_vma soffset;
9835 1.5 christos
9836 1.5 christos slo = (Elf32_External_Rela *) sreloc->contents;
9837 1.5 christos shi = srelend = slo + sreloc->reloc_count;
9838 1.5 christos soffset = (offset + input_section->output_section->vma
9839 1.5 christos + input_section->output_offset);
9840 1.5 christos while (slo < shi)
9841 1.5 christos {
9842 1.5 christos Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9843 1.5 christos bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9844 1.5 christos &outrel);
9845 1.5 christos if (outrel.r_offset < soffset)
9846 1.5 christos slo = srel + 1;
9847 1.5 christos else if (outrel.r_offset > soffset + 3)
9848 1.3 christos shi = srel;
9849 1.3 christos else
9850 1.3 christos {
9851 1.3 christos if (srel + 1 != srelend)
9852 1.3 christos {
9853 1.3 christos memmove (srel, srel + 1,
9854 1.3 christos (srelend - (srel + 1)) * sizeof (*srel));
9855 1.3 christos srel = srelend - 1;
9856 1.3 christos }
9857 1.3 christos outrel.r_offset += patch_off - offset;
9858 1.6 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel,
9859 1.3 christos (bfd_byte *) srel);
9860 1.6 christos break;
9861 1.3 christos }
9862 1.3 christos }
9863 1.3 christos }
9864 1.3 christos }
9865 1.3 christos else
9866 1.3 christos rel = NULL;
9867 1.3 christos
9868 1.3 christos if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9869 1.3 christos && (insn & 2) == 0 /* relative */)
9870 1.3 christos {
9871 1.3 christos bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9872 1.3 christos
9873 1.3 christos delta += offset - patch_off;
9874 1.3 christos if (bfd_link_relocatable (info) && rel != NULL)
9875 1.3 christos delta = 0;
9876 1.3 christos if (!bfd_link_relocatable (info) && rel != NULL)
9877 1.3 christos {
9878 1.3 christos enum elf_ppc_reloc_type r_type;
9879 1.3 christos
9880 1.3 christos r_type = ELF32_R_TYPE (relend[-1].r_info);
9881 1.3 christos if (r_type == R_PPC_REL14_BRTAKEN)
9882 1.3 christos insn |= BRANCH_PREDICT_BIT;
9883 1.3 christos else if (r_type == R_PPC_REL14_BRNTAKEN)
9884 1.3 christos insn &= ~BRANCH_PREDICT_BIT;
9885 1.3 christos else
9886 1.3 christos BFD_ASSERT (r_type == R_PPC_REL14);
9887 1.3 christos
9888 1.3 christos if ((r_type == R_PPC_REL14_BRTAKEN
9889 1.3 christos || r_type == R_PPC_REL14_BRNTAKEN)
9890 1.3 christos && delta + 0x8000 < 0x10000
9891 1.3 christos && (bfd_signed_vma) delta < 0)
9892 1.3 christos insn ^= BRANCH_PREDICT_BIT;
9893 1.3 christos }
9894 1.3 christos if (delta + 0x8000 < 0x10000)
9895 1.3 christos {
9896 1.3 christos bfd_put_32 (input_bfd,
9897 1.3 christos (insn & ~0xfffc) | (delta & 0xfffc),
9898 1.3 christos contents + patch_off);
9899 1.3 christos patch_off += 4;
9900 1.3 christos bfd_put_32 (input_bfd,
9901 1.3 christos B | ((offset + 4 - patch_off) & 0x3fffffc),
9902 1.3 christos contents + patch_off);
9903 1.3 christos patch_off += 4;
9904 1.3 christos }
9905 1.3 christos else
9906 1.3 christos {
9907 1.3 christos if (rel != NULL)
9908 1.3 christos {
9909 1.3 christos unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
9910 1.3 christos
9911 1.3 christos relend[-1].r_offset += 8;
9912 1.3 christos relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
9913 1.3 christos }
9914 1.3 christos bfd_put_32 (input_bfd,
9915 1.3 christos (insn & ~0xfffc) | 8,
9916 1.3 christos contents + patch_off);
9917 1.3 christos patch_off += 4;
9918 1.3 christos bfd_put_32 (input_bfd,
9919 1.3 christos B | ((offset + 4 - patch_off) & 0x3fffffc),
9920 1.3 christos contents + patch_off);
9921 1.3 christos patch_off += 4;
9922 1.3 christos bfd_put_32 (input_bfd,
9923 1.3 christos B | ((delta - 8) & 0x3fffffc),
9924 1.3 christos contents + patch_off);
9925 1.3 christos patch_off += 4;
9926 1.1 christos }
9927 1.1 christos }
9928 1.1 christos else
9929 1.1 christos {
9930 1.1 christos bfd_put_32 (input_bfd, insn, contents + patch_off);
9931 1.1 christos patch_off += 4;
9932 1.1 christos bfd_put_32 (input_bfd,
9933 1.1 christos B | ((offset + 4 - patch_off) & 0x3fffffc),
9934 1.1 christos contents + patch_off);
9935 1.1 christos patch_off += 4;
9936 1.1 christos }
9937 1.1 christos BFD_ASSERT (patch_off <= input_section->size);
9938 1.1 christos relax_info->workaround_size = input_section->size - patch_off;
9939 1.1 christos }
9940 1.1 christos }
9941 1.1 christos
9942 1.1 christos return ret;
9943 1.1 christos }
9944 1.1 christos
9945 1.1 christos /* Finish up dynamic symbol handling. We set the contents of various
9947 1.1 christos dynamic sections here. */
9948 1.1 christos
9949 1.1 christos static bfd_boolean
9950 1.1 christos ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9951 1.1 christos struct bfd_link_info *info,
9952 1.1 christos struct elf_link_hash_entry *h,
9953 1.1 christos Elf_Internal_Sym *sym)
9954 1.1 christos {
9955 1.1 christos struct ppc_elf_link_hash_table *htab;
9956 1.1 christos struct plt_entry *ent;
9957 1.1 christos bfd_boolean doneone;
9958 1.1 christos
9959 1.1 christos #ifdef DEBUG
9960 1.1 christos fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9961 1.1 christos h->root.root.string);
9962 1.1 christos #endif
9963 1.1 christos
9964 1.1 christos htab = ppc_elf_hash_table (info);
9965 1.1 christos BFD_ASSERT (htab->elf.dynobj != NULL);
9966 1.1 christos
9967 1.1 christos doneone = FALSE;
9968 1.1 christos for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9969 1.1 christos if (ent->plt.offset != (bfd_vma) -1)
9970 1.1 christos {
9971 1.1 christos if (!doneone)
9972 1.1 christos {
9973 1.1 christos Elf_Internal_Rela rela;
9974 1.1 christos bfd_byte *loc;
9975 1.1 christos bfd_vma reloc_index;
9976 1.1 christos
9977 1.1 christos if (htab->plt_type == PLT_NEW
9978 1.1 christos || !htab->elf.dynamic_sections_created
9979 1.1 christos || h->dynindx == -1)
9980 1.1 christos reloc_index = ent->plt.offset / 4;
9981 1.1 christos else
9982 1.1 christos {
9983 1.1 christos reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
9984 1.1 christos / htab->plt_slot_size);
9985 1.1 christos if (reloc_index > PLT_NUM_SINGLE_ENTRIES
9986 1.6 christos && htab->plt_type == PLT_OLD)
9987 1.1 christos reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
9988 1.1 christos }
9989 1.1 christos
9990 1.6 christos /* This symbol has an entry in the procedure linkage table.
9991 1.1 christos Set it up. */
9992 1.1 christos if (htab->plt_type == PLT_VXWORKS
9993 1.1 christos && htab->elf.dynamic_sections_created
9994 1.1 christos && h->dynindx != -1)
9995 1.1 christos {
9996 1.1 christos bfd_vma got_offset;
9997 1.1 christos const bfd_vma *plt_entry;
9998 1.1 christos
9999 1.1 christos /* The first three entries in .got.plt are reserved. */
10000 1.1 christos got_offset = (reloc_index + 3) * 4;
10001 1.1 christos
10002 1.1 christos /* Use the right PLT. */
10003 1.1 christos plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
10004 1.1 christos : ppc_elf_vxworks_plt_entry;
10005 1.1 christos
10006 1.1 christos /* Fill in the .plt on VxWorks. */
10007 1.1 christos if (bfd_link_pic (info))
10008 1.1 christos {
10009 1.1 christos bfd_put_32 (output_bfd,
10010 1.1 christos plt_entry[0] | PPC_HA (got_offset),
10011 1.1 christos htab->plt->contents + ent->plt.offset + 0);
10012 1.1 christos bfd_put_32 (output_bfd,
10013 1.1 christos plt_entry[1] | PPC_LO (got_offset),
10014 1.1 christos htab->plt->contents + ent->plt.offset + 4);
10015 1.1 christos }
10016 1.1 christos else
10017 1.1 christos {
10018 1.1 christos bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
10019 1.1 christos
10020 1.1 christos bfd_put_32 (output_bfd,
10021 1.1 christos plt_entry[0] | PPC_HA (got_loc),
10022 1.1 christos htab->plt->contents + ent->plt.offset + 0);
10023 1.1 christos bfd_put_32 (output_bfd,
10024 1.1 christos plt_entry[1] | PPC_LO (got_loc),
10025 1.1 christos htab->plt->contents + ent->plt.offset + 4);
10026 1.1 christos }
10027 1.1 christos
10028 1.1 christos bfd_put_32 (output_bfd, plt_entry[2],
10029 1.1 christos htab->plt->contents + ent->plt.offset + 8);
10030 1.1 christos bfd_put_32 (output_bfd, plt_entry[3],
10031 1.1 christos htab->plt->contents + ent->plt.offset + 12);
10032 1.1 christos
10033 1.1 christos /* This instruction is an immediate load. The value loaded is
10034 1.1 christos the byte offset of the R_PPC_JMP_SLOT relocation from the
10035 1.1 christos start of the .rela.plt section. The value is stored in the
10036 1.1 christos low-order 16 bits of the load instruction. */
10037 1.1 christos /* NOTE: It appears that this is now an index rather than a
10038 1.1 christos prescaled offset. */
10039 1.1 christos bfd_put_32 (output_bfd,
10040 1.1 christos plt_entry[4] | reloc_index,
10041 1.1 christos htab->plt->contents + ent->plt.offset + 16);
10042 1.1 christos /* This instruction is a PC-relative branch whose target is
10043 1.1 christos the start of the PLT section. The address of this branch
10044 1.1 christos instruction is 20 bytes beyond the start of this PLT entry.
10045 1.1 christos The address is encoded in bits 6-29, inclusive. The value
10046 1.1 christos stored is right-shifted by two bits, permitting a 26-bit
10047 1.1 christos offset. */
10048 1.6 christos bfd_put_32 (output_bfd,
10049 1.1 christos (plt_entry[5]
10050 1.1 christos | (-(ent->plt.offset + 20) & 0x03fffffc)),
10051 1.1 christos htab->plt->contents + ent->plt.offset + 20);
10052 1.1 christos bfd_put_32 (output_bfd, plt_entry[6],
10053 1.1 christos htab->plt->contents + ent->plt.offset + 24);
10054 1.1 christos bfd_put_32 (output_bfd, plt_entry[7],
10055 1.1 christos htab->plt->contents + ent->plt.offset + 28);
10056 1.1 christos
10057 1.1 christos /* Fill in the GOT entry corresponding to this PLT slot with
10058 1.1 christos the address immediately after the "bctr" instruction
10059 1.1 christos in this PLT entry. */
10060 1.1 christos bfd_put_32 (output_bfd, (htab->plt->output_section->vma
10061 1.1 christos + htab->plt->output_offset
10062 1.1 christos + ent->plt.offset + 16),
10063 1.1 christos htab->sgotplt->contents + got_offset);
10064 1.1 christos
10065 1.1 christos if (!bfd_link_pic (info))
10066 1.1 christos {
10067 1.1 christos /* Fill in a couple of entries in .rela.plt.unloaded. */
10068 1.1 christos loc = htab->srelplt2->contents
10069 1.1 christos + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
10070 1.1 christos * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
10071 1.1 christos * sizeof (Elf32_External_Rela));
10072 1.1 christos
10073 1.1 christos /* Provide the @ha relocation for the first instruction. */
10074 1.1 christos rela.r_offset = (htab->plt->output_section->vma
10075 1.1 christos + htab->plt->output_offset
10076 1.1 christos + ent->plt.offset + 2);
10077 1.1 christos rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10078 1.1 christos R_PPC_ADDR16_HA);
10079 1.1 christos rela.r_addend = got_offset;
10080 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10081 1.1 christos loc += sizeof (Elf32_External_Rela);
10082 1.1 christos
10083 1.1 christos /* Provide the @l relocation for the second instruction. */
10084 1.1 christos rela.r_offset = (htab->plt->output_section->vma
10085 1.1 christos + htab->plt->output_offset
10086 1.1 christos + ent->plt.offset + 6);
10087 1.1 christos rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10088 1.1 christos R_PPC_ADDR16_LO);
10089 1.1 christos rela.r_addend = got_offset;
10090 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10091 1.1 christos loc += sizeof (Elf32_External_Rela);
10092 1.1 christos
10093 1.1 christos /* Provide a relocation for the GOT entry corresponding to this
10094 1.1 christos PLT slot. Point it at the middle of the .plt entry. */
10095 1.1 christos rela.r_offset = (htab->sgotplt->output_section->vma
10096 1.1 christos + htab->sgotplt->output_offset
10097 1.1 christos + got_offset);
10098 1.1 christos rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
10099 1.1 christos R_PPC_ADDR32);
10100 1.1 christos rela.r_addend = ent->plt.offset + 16;
10101 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10102 1.1 christos }
10103 1.1 christos
10104 1.1 christos /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10105 1.1 christos In particular, the offset for the relocation is not the
10106 1.1 christos address of the PLT entry for this function, as specified
10107 1.1 christos by the ABI. Instead, the offset is set to the address of
10108 1.1 christos the GOT slot for this function. See EABI 4.4.4.1. */
10109 1.1 christos rela.r_offset = (htab->sgotplt->output_section->vma
10110 1.1 christos + htab->sgotplt->output_offset
10111 1.1 christos + got_offset);
10112 1.1 christos
10113 1.1 christos }
10114 1.1 christos else
10115 1.1 christos {
10116 1.1 christos asection *splt = htab->plt;
10117 1.1 christos if (!htab->elf.dynamic_sections_created
10118 1.1 christos || h->dynindx == -1)
10119 1.1 christos splt = htab->iplt;
10120 1.1 christos
10121 1.1 christos rela.r_offset = (splt->output_section->vma
10122 1.1 christos + splt->output_offset
10123 1.1 christos + ent->plt.offset);
10124 1.1 christos if (htab->plt_type == PLT_OLD
10125 1.1 christos || !htab->elf.dynamic_sections_created
10126 1.1 christos || h->dynindx == -1)
10127 1.1 christos {
10128 1.1 christos /* We don't need to fill in the .plt. The ppc dynamic
10129 1.1 christos linker will fill it in. */
10130 1.1 christos }
10131 1.1 christos else
10132 1.1 christos {
10133 1.1 christos bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
10134 1.1 christos + htab->glink->output_section->vma
10135 1.1 christos + htab->glink->output_offset);
10136 1.1 christos bfd_put_32 (output_bfd, val,
10137 1.1 christos splt->contents + ent->plt.offset);
10138 1.1 christos }
10139 1.1 christos }
10140 1.1 christos
10141 1.1 christos /* Fill in the entry in the .rela.plt section. */
10142 1.1 christos rela.r_addend = 0;
10143 1.1 christos if (!htab->elf.dynamic_sections_created
10144 1.1 christos || h->dynindx == -1)
10145 1.1 christos {
10146 1.1 christos BFD_ASSERT (h->type == STT_GNU_IFUNC
10147 1.1 christos && h->def_regular
10148 1.1 christos && (h->root.type == bfd_link_hash_defined
10149 1.1 christos || h->root.type == bfd_link_hash_defweak));
10150 1.1 christos rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
10151 1.1 christos rela.r_addend = SYM_VAL (h);
10152 1.1 christos }
10153 1.1 christos else
10154 1.1 christos rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
10155 1.1 christos
10156 1.1 christos if (!htab->elf.dynamic_sections_created
10157 1.1 christos || h->dynindx == -1)
10158 1.1 christos loc = (htab->reliplt->contents
10159 1.1 christos + (htab->reliplt->reloc_count++
10160 1.1 christos * sizeof (Elf32_External_Rela)));
10161 1.1 christos else
10162 1.1 christos loc = (htab->relplt->contents
10163 1.1 christos + reloc_index * sizeof (Elf32_External_Rela));
10164 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10165 1.1 christos
10166 1.1 christos if (!h->def_regular)
10167 1.1 christos {
10168 1.1 christos /* Mark the symbol as undefined, rather than as
10169 1.1 christos defined in the .plt section. Leave the value if
10170 1.6 christos there were any relocations where pointer equality
10171 1.1 christos matters (this is a clue for the dynamic linker, to
10172 1.1 christos make function pointer comparisons work between an
10173 1.1 christos application and shared library), otherwise set it
10174 1.1 christos to zero. */
10175 1.1 christos sym->st_shndx = SHN_UNDEF;
10176 1.1 christos if (!h->pointer_equality_needed)
10177 1.1 christos sym->st_value = 0;
10178 1.1 christos else if (!h->ref_regular_nonweak)
10179 1.1 christos {
10180 1.1 christos /* This breaks function pointer comparisons, but
10181 1.1 christos that is better than breaking tests for a NULL
10182 1.1 christos function pointer. */
10183 1.1 christos sym->st_value = 0;
10184 1.1 christos }
10185 1.1 christos }
10186 1.1 christos else if (h->type == STT_GNU_IFUNC
10187 1.1 christos && !bfd_link_pic (info))
10188 1.1 christos {
10189 1.1 christos /* Set the value of ifunc symbols in a non-pie
10190 1.1 christos executable to the glink entry. This is to avoid
10191 1.1 christos text relocations. We can't do this for ifunc in
10192 1.1 christos allocate_dynrelocs, as we do for normal dynamic
10193 1.1 christos function symbols with plt entries, because we need
10194 1.1 christos to keep the original value around for the ifunc
10195 1.1 christos relocation. */
10196 1.1 christos sym->st_shndx = (_bfd_elf_section_from_bfd_section
10197 1.1 christos (output_bfd, htab->glink->output_section));
10198 1.1 christos sym->st_value = (ent->glink_offset
10199 1.1 christos + htab->glink->output_offset
10200 1.3 christos + htab->glink->output_section->vma);
10201 1.1 christos }
10202 1.1 christos doneone = TRUE;
10203 1.1 christos }
10204 1.1 christos
10205 1.1 christos if (htab->plt_type == PLT_NEW
10206 1.1 christos || !htab->elf.dynamic_sections_created
10207 1.1 christos || h->dynindx == -1)
10208 1.1 christos {
10209 1.1 christos unsigned char *p;
10210 1.1 christos asection *splt = htab->plt;
10211 1.1 christos if (!htab->elf.dynamic_sections_created
10212 1.1 christos || h->dynindx == -1)
10213 1.1 christos splt = htab->iplt;
10214 1.1 christos
10215 1.1 christos p = (unsigned char *) htab->glink->contents + ent->glink_offset;
10216 1.1 christos
10217 1.1 christos if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt)
10218 1.1 christos {
10219 1.1 christos bfd_put_32 (output_bfd, LWZ_11_3, p);
10220 1.1 christos p += 4;
10221 1.1 christos bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
10222 1.6 christos p += 4;
10223 1.1 christos bfd_put_32 (output_bfd, MR_0_3, p);
10224 1.1 christos p += 4;
10225 1.1 christos bfd_put_32 (output_bfd, CMPWI_11_0, p);
10226 1.1 christos p += 4;
10227 1.1 christos bfd_put_32 (output_bfd, ADD_3_12_2, p);
10228 1.1 christos p += 4;
10229 1.1 christos bfd_put_32 (output_bfd, BEQLR, p);
10230 1.1 christos p += 4;
10231 1.1 christos bfd_put_32 (output_bfd, MR_3_0, p);
10232 1.1 christos p += 4;
10233 1.1 christos bfd_put_32 (output_bfd, NOP, p);
10234 1.1 christos p += 4;
10235 1.1 christos }
10236 1.1 christos
10237 1.1 christos write_glink_stub (ent, splt, p, info);
10238 1.1 christos
10239 1.1 christos if (!bfd_link_pic (info))
10240 1.1 christos /* We only need one non-PIC glink stub. */
10241 1.1 christos break;
10242 1.1 christos }
10243 1.1 christos else
10244 1.1 christos break;
10245 1.1 christos }
10246 1.1 christos
10247 1.1 christos if (h->needs_copy)
10248 1.1 christos {
10249 1.1 christos asection *s;
10250 1.1 christos Elf_Internal_Rela rela;
10251 1.1 christos bfd_byte *loc;
10252 1.1 christos
10253 1.1 christos /* This symbols needs a copy reloc. Set it up. */
10254 1.1 christos
10255 1.1 christos #ifdef DEBUG
10256 1.1 christos fprintf (stderr, ", copy");
10257 1.1 christos #endif
10258 1.1 christos
10259 1.1 christos BFD_ASSERT (h->dynindx != -1);
10260 1.1 christos
10261 1.1 christos if (ppc_elf_hash_entry (h)->has_sda_refs)
10262 1.1 christos s = htab->relsbss;
10263 1.1 christos else
10264 1.1 christos s = htab->relbss;
10265 1.1 christos BFD_ASSERT (s != NULL);
10266 1.1 christos
10267 1.1 christos rela.r_offset = SYM_VAL (h);
10268 1.1 christos rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
10269 1.1 christos rela.r_addend = 0;
10270 1.1 christos loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
10271 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10272 1.1 christos }
10273 1.1 christos
10274 1.1 christos #ifdef DEBUG
10275 1.1 christos fprintf (stderr, "\n");
10276 1.1 christos #endif
10277 1.1 christos
10278 1.1 christos return TRUE;
10279 1.1 christos }
10280 1.1 christos
10281 1.1 christos static enum elf_reloc_type_class
10283 1.1 christos ppc_elf_reloc_type_class (const struct bfd_link_info *info,
10284 1.1 christos const asection *rel_sec,
10285 1.1 christos const Elf_Internal_Rela *rela)
10286 1.1 christos {
10287 1.1 christos struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10288 1.1 christos
10289 1.1 christos if (rel_sec == htab->reliplt)
10290 1.1 christos return reloc_class_ifunc;
10291 1.1 christos
10292 1.1 christos switch (ELF32_R_TYPE (rela->r_info))
10293 1.1 christos {
10294 1.1 christos case R_PPC_RELATIVE:
10295 1.1 christos return reloc_class_relative;
10296 1.1 christos case R_PPC_JMP_SLOT:
10297 1.1 christos return reloc_class_plt;
10298 1.1 christos case R_PPC_COPY:
10299 1.1 christos return reloc_class_copy;
10300 1.1 christos default:
10301 1.1 christos return reloc_class_normal;
10302 1.1 christos }
10303 1.1 christos }
10304 1.1 christos
10305 1.1 christos /* Finish up the dynamic sections. */
10307 1.1 christos
10308 1.1 christos static bfd_boolean
10309 1.1 christos ppc_elf_finish_dynamic_sections (bfd *output_bfd,
10310 1.1 christos struct bfd_link_info *info)
10311 1.1 christos {
10312 1.1 christos asection *sdyn;
10313 1.1 christos asection *splt;
10314 1.1 christos struct ppc_elf_link_hash_table *htab;
10315 1.1 christos bfd_vma got;
10316 1.1 christos bfd *dynobj;
10317 1.1 christos bfd_boolean ret = TRUE;
10318 1.1 christos
10319 1.1 christos #ifdef DEBUG
10320 1.1 christos fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
10321 1.1 christos #endif
10322 1.1 christos
10323 1.1 christos htab = ppc_elf_hash_table (info);
10324 1.1 christos dynobj = elf_hash_table (info)->dynobj;
10325 1.1 christos sdyn = bfd_get_linker_section (dynobj, ".dynamic");
10326 1.1 christos if (htab->is_vxworks)
10327 1.1 christos splt = bfd_get_linker_section (dynobj, ".plt");
10328 1.1 christos else
10329 1.1 christos splt = NULL;
10330 1.1 christos
10331 1.1 christos got = 0;
10332 1.1 christos if (htab->elf.hgot != NULL)
10333 1.1 christos got = SYM_VAL (htab->elf.hgot);
10334 1.1 christos
10335 1.1 christos if (htab->elf.dynamic_sections_created)
10336 1.1 christos {
10337 1.1 christos Elf32_External_Dyn *dyncon, *dynconend;
10338 1.1 christos
10339 1.1 christos BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
10340 1.1 christos
10341 1.1 christos dyncon = (Elf32_External_Dyn *) sdyn->contents;
10342 1.1 christos dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10343 1.1 christos for (; dyncon < dynconend; dyncon++)
10344 1.1 christos {
10345 1.1 christos Elf_Internal_Dyn dyn;
10346 1.1 christos asection *s;
10347 1.1 christos
10348 1.1 christos bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
10349 1.1 christos
10350 1.1 christos switch (dyn.d_tag)
10351 1.1 christos {
10352 1.1 christos case DT_PLTGOT:
10353 1.1 christos if (htab->is_vxworks)
10354 1.1 christos s = htab->sgotplt;
10355 1.1 christos else
10356 1.1 christos s = htab->plt;
10357 1.1 christos dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10358 1.1 christos break;
10359 1.1 christos
10360 1.1 christos case DT_PLTRELSZ:
10361 1.1 christos dyn.d_un.d_val = htab->relplt->size;
10362 1.1 christos break;
10363 1.1 christos
10364 1.1 christos case DT_JMPREL:
10365 1.1 christos s = htab->relplt;
10366 1.1 christos dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10367 1.1 christos break;
10368 1.1 christos
10369 1.1 christos case DT_PPC_GOT:
10370 1.1 christos dyn.d_un.d_ptr = got;
10371 1.1 christos break;
10372 1.1 christos
10373 1.1 christos case DT_RELASZ:
10374 1.1 christos if (htab->is_vxworks)
10375 1.1 christos {
10376 1.1 christos if (htab->relplt)
10377 1.1 christos dyn.d_un.d_ptr -= htab->relplt->size;
10378 1.1 christos break;
10379 1.1 christos }
10380 1.1 christos continue;
10381 1.1 christos
10382 1.1 christos default:
10383 1.1 christos if (htab->is_vxworks
10384 1.1 christos && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10385 1.1 christos break;
10386 1.1 christos continue;
10387 1.1 christos }
10388 1.1 christos
10389 1.1 christos bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10390 1.1 christos }
10391 1.1 christos }
10392 1.1 christos
10393 1.1 christos if (htab->got != NULL)
10394 1.1 christos {
10395 1.1 christos if (htab->elf.hgot->root.u.def.section == htab->got
10396 1.1 christos || htab->elf.hgot->root.u.def.section == htab->sgotplt)
10397 1.1 christos {
10398 1.1 christos unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
10399 1.1 christos
10400 1.1 christos p += htab->elf.hgot->root.u.def.value;
10401 1.1 christos if (htab->plt_type == PLT_OLD)
10402 1.1 christos {
10403 1.1 christos /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10404 1.1 christos so that a function can easily find the address of
10405 1.1 christos _GLOBAL_OFFSET_TABLE_. */
10406 1.1 christos BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
10407 1.1 christos < htab->elf.hgot->root.u.def.section->size);
10408 1.1 christos bfd_put_32 (output_bfd, 0x4e800021, p - 4);
10409 1.1 christos }
10410 1.1 christos
10411 1.1 christos if (sdyn != NULL)
10412 1.1 christos {
10413 1.1 christos bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10414 1.1 christos BFD_ASSERT (htab->elf.hgot->root.u.def.value
10415 1.1 christos < htab->elf.hgot->root.u.def.section->size);
10416 1.1 christos bfd_put_32 (output_bfd, val, p);
10417 1.6 christos }
10418 1.1 christos }
10419 1.1 christos else
10420 1.1 christos {
10421 1.6 christos info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
10422 1.1 christos htab->elf.hgot->root.root.string,
10423 1.1 christos (htab->sgotplt != NULL
10424 1.1 christos ? htab->sgotplt->name : htab->got->name));
10425 1.1 christos bfd_set_error (bfd_error_bad_value);
10426 1.1 christos ret = FALSE;
10427 1.1 christos }
10428 1.1 christos
10429 1.1 christos elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
10430 1.1 christos }
10431 1.1 christos
10432 1.1 christos /* Fill in the first entry in the VxWorks procedure linkage table. */
10433 1.1 christos if (splt && splt->size > 0)
10434 1.1 christos {
10435 1.1 christos /* Use the right PLT. */
10436 1.1 christos const bfd_vma *plt_entry = (bfd_link_pic (info)
10437 1.1 christos ? ppc_elf_vxworks_pic_plt0_entry
10438 1.1 christos : ppc_elf_vxworks_plt0_entry);
10439 1.1 christos
10440 1.1 christos if (!bfd_link_pic (info))
10441 1.1 christos {
10442 1.6 christos bfd_vma got_value = SYM_VAL (htab->elf.hgot);
10443 1.1 christos
10444 1.1 christos bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
10445 1.1 christos splt->contents + 0);
10446 1.1 christos bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
10447 1.1 christos splt->contents + 4);
10448 1.1 christos }
10449 1.1 christos else
10450 1.1 christos {
10451 1.1 christos bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10452 1.1 christos bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10453 1.1 christos }
10454 1.1 christos bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10455 1.1 christos bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10456 1.1 christos bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10457 1.1 christos bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10458 1.1 christos bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10459 1.1 christos bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10460 1.1 christos
10461 1.1 christos if (! bfd_link_pic (info))
10462 1.1 christos {
10463 1.1 christos Elf_Internal_Rela rela;
10464 1.1 christos bfd_byte *loc;
10465 1.1 christos
10466 1.1 christos loc = htab->srelplt2->contents;
10467 1.1 christos
10468 1.1 christos /* Output the @ha relocation for the first instruction. */
10469 1.1 christos rela.r_offset = (htab->plt->output_section->vma
10470 1.1 christos + htab->plt->output_offset
10471 1.1 christos + 2);
10472 1.1 christos rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10473 1.1 christos rela.r_addend = 0;
10474 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10475 1.1 christos loc += sizeof (Elf32_External_Rela);
10476 1.1 christos
10477 1.1 christos /* Output the @l relocation for the second instruction. */
10478 1.1 christos rela.r_offset = (htab->plt->output_section->vma
10479 1.1 christos + htab->plt->output_offset
10480 1.1 christos + 6);
10481 1.1 christos rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10482 1.1 christos rela.r_addend = 0;
10483 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10484 1.1 christos loc += sizeof (Elf32_External_Rela);
10485 1.1 christos
10486 1.1 christos /* Fix up the remaining relocations. They may have the wrong
10487 1.1 christos symbol index for _G_O_T_ or _P_L_T_ depending on the order
10488 1.1 christos in which symbols were output. */
10489 1.1 christos while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10490 1.1 christos {
10491 1.1 christos Elf_Internal_Rela rel;
10492 1.1 christos
10493 1.1 christos bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10494 1.1 christos rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10495 1.1 christos bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10496 1.1 christos loc += sizeof (Elf32_External_Rela);
10497 1.1 christos
10498 1.1 christos bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10499 1.1 christos rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10500 1.1 christos bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10501 1.1 christos loc += sizeof (Elf32_External_Rela);
10502 1.1 christos
10503 1.1 christos bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10504 1.1 christos rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
10505 1.1 christos bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10506 1.1 christos loc += sizeof (Elf32_External_Rela);
10507 1.1 christos }
10508 1.1 christos }
10509 1.1 christos }
10510 1.1 christos
10511 1.1 christos if (htab->glink != NULL
10512 1.1 christos && htab->glink->contents != NULL
10513 1.1 christos && htab->elf.dynamic_sections_created)
10514 1.1 christos {
10515 1.1 christos unsigned char *p;
10516 1.1 christos unsigned char *endp;
10517 1.1 christos bfd_vma res0;
10518 1.1 christos unsigned int i;
10519 1.1 christos
10520 1.1 christos /*
10521 1.1 christos * PIC glink code is the following:
10522 1.1 christos *
10523 1.1 christos * # ith PLT code stub.
10524 1.1 christos * addis 11,30,(plt+(i-1)*4-got)@ha
10525 1.1 christos * lwz 11,(plt+(i-1)*4-got)@l(11)
10526 1.1 christos * mtctr 11
10527 1.1 christos * bctr
10528 1.1 christos *
10529 1.1 christos * # A table of branches, one for each plt entry.
10530 1.1 christos * # The idea is that the plt call stub loads ctr and r11 with these
10531 1.1 christos * # addresses, so (r11 - res_0) gives the plt index * 4.
10532 1.1 christos * res_0: b PLTresolve
10533 1.1 christos * res_1: b PLTresolve
10534 1.1 christos * .
10535 1.1 christos * # Some number of entries towards the end can be nops
10536 1.1 christos * res_n_m3: nop
10537 1.1 christos * res_n_m2: nop
10538 1.1 christos * res_n_m1:
10539 1.1 christos *
10540 1.1 christos * PLTresolve:
10541 1.1 christos * addis 11,11,(1f-res_0)@ha
10542 1.1 christos * mflr 0
10543 1.1 christos * bcl 20,31,1f
10544 1.1 christos * 1: addi 11,11,(1b-res_0)@l
10545 1.1 christos * mflr 12
10546 1.1 christos * mtlr 0
10547 1.1 christos * sub 11,11,12 # r11 = index * 4
10548 1.1 christos * addis 12,12,(got+4-1b)@ha
10549 1.1 christos * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10550 1.1 christos * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10551 1.1 christos * mtctr 0
10552 1.1 christos * add 0,11,11
10553 1.1 christos * add 11,0,11 # r11 = index * 12 = reloc offset.
10554 1.1 christos * bctr
10555 1.1 christos */
10556 1.1 christos static const unsigned int pic_plt_resolve[] =
10557 1.1 christos {
10558 1.1 christos ADDIS_11_11,
10559 1.1 christos MFLR_0,
10560 1.1 christos BCL_20_31,
10561 1.1 christos ADDI_11_11,
10562 1.1 christos MFLR_12,
10563 1.1 christos MTLR_0,
10564 1.1 christos SUB_11_11_12,
10565 1.1 christos ADDIS_12_12,
10566 1.1 christos LWZ_0_12,
10567 1.1 christos LWZ_12_12,
10568 1.1 christos MTCTR_0,
10569 1.1 christos ADD_0_11_11,
10570 1.1 christos ADD_11_0_11,
10571 1.1 christos BCTR,
10572 1.1 christos NOP,
10573 1.1 christos NOP
10574 1.1 christos };
10575 1.1 christos
10576 1.1 christos /*
10577 1.1 christos * Non-PIC glink code is a little simpler.
10578 1.1 christos *
10579 1.1 christos * # ith PLT code stub.
10580 1.1 christos * lis 11,(plt+(i-1)*4)@ha
10581 1.1 christos * lwz 11,(plt+(i-1)*4)@l(11)
10582 1.1 christos * mtctr 11
10583 1.1 christos * bctr
10584 1.1 christos *
10585 1.1 christos * The branch table is the same, then comes
10586 1.1 christos *
10587 1.1 christos * PLTresolve:
10588 1.1 christos * lis 12,(got+4)@ha
10589 1.1 christos * addis 11,11,(-res_0)@ha
10590 1.1 christos * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10591 1.1 christos * addi 11,11,(-res_0)@l # r11 = index * 4
10592 1.1 christos * mtctr 0
10593 1.1 christos * add 0,11,11
10594 1.1 christos * lwz 12,(got+8)@l(12) # got[2] contains the map address
10595 1.1 christos * add 11,0,11 # r11 = index * 12 = reloc offset.
10596 1.1 christos * bctr
10597 1.1 christos */
10598 1.1 christos static const unsigned int plt_resolve[] =
10599 1.1 christos {
10600 1.1 christos LIS_12,
10601 1.1 christos ADDIS_11_11,
10602 1.1 christos LWZ_0_12,
10603 1.1 christos ADDI_11_11,
10604 1.1 christos MTCTR_0,
10605 1.1 christos ADD_0_11_11,
10606 1.1 christos LWZ_12_12,
10607 1.1 christos ADD_11_0_11,
10608 1.1 christos BCTR,
10609 1.1 christos NOP,
10610 1.3 christos NOP,
10611 1.1 christos NOP,
10612 1.1 christos NOP,
10613 1.1 christos NOP,
10614 1.1 christos NOP,
10615 1.1 christos NOP
10616 1.1 christos };
10617 1.1 christos
10618 1.1 christos if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
10619 1.1 christos abort ();
10620 1.1 christos if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
10621 1.1 christos abort ();
10622 1.1 christos
10623 1.1 christos /* Build the branch table, one for each plt entry (less one),
10624 1.1 christos and perhaps some padding. */
10625 1.3 christos p = htab->glink->contents;
10626 1.3 christos p += htab->glink_pltresolve;
10627 1.3 christos endp = htab->glink->contents;
10628 1.3 christos endp += htab->glink->size - GLINK_PLTRESOLVE;
10629 1.3 christos while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
10630 1.3 christos {
10631 1.3 christos bfd_put_32 (output_bfd, B + endp - p, p);
10632 1.3 christos p += 4;
10633 1.3 christos }
10634 1.3 christos while (p < endp)
10635 1.3 christos {
10636 1.3 christos bfd_put_32 (output_bfd, NOP, p);
10637 1.3 christos p += 4;
10638 1.3 christos }
10639 1.3 christos
10640 1.3 christos res0 = (htab->glink_pltresolve
10641 1.3 christos + htab->glink->output_section->vma
10642 1.3 christos + htab->glink->output_offset);
10643 1.3 christos
10644 1.3 christos if (htab->params->ppc476_workaround)
10645 1.3 christos {
10646 1.3 christos /* Ensure that a call stub at the end of a page doesn't
10647 1.3 christos result in prefetch over the end of the page into the
10648 1.3 christos glink branch table. */
10649 1.3 christos bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10650 1.3 christos bfd_vma page_addr;
10651 1.3 christos bfd_vma glink_start = (htab->glink->output_section->vma
10652 1.3 christos + htab->glink->output_offset);
10653 1.3 christos
10654 1.3 christos for (page_addr = res0 & -pagesize;
10655 1.3 christos page_addr > glink_start;
10656 1.3 christos page_addr -= pagesize)
10657 1.3 christos {
10658 1.1 christos /* We have a plt call stub that may need fixing. */
10659 1.6 christos bfd_byte *loc;
10660 1.1 christos unsigned int insn;
10661 1.1 christos
10662 1.1 christos loc = htab->glink->contents + page_addr - 4 - glink_start;
10663 1.1 christos insn = bfd_get_32 (output_bfd, loc);
10664 1.1 christos if (insn == BCTR)
10665 1.3 christos {
10666 1.3 christos /* By alignment, we know that there must be at least
10667 1.3 christos one other call stub before this one. */
10668 1.3 christos insn = bfd_get_32 (output_bfd, loc - 16);
10669 1.3 christos if (insn == BCTR)
10670 1.1 christos bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10671 1.1 christos else
10672 1.1 christos bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10673 1.1 christos }
10674 1.1 christos }
10675 1.1 christos }
10676 1.1 christos
10677 1.1 christos /* Last comes the PLTresolve stub. */
10678 1.1 christos if (bfd_link_pic (info))
10679 1.1 christos {
10680 1.1 christos bfd_vma bcl;
10681 1.1 christos
10682 1.1 christos for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
10683 1.1 christos {
10684 1.1 christos unsigned int insn = pic_plt_resolve[i];
10685 1.1 christos
10686 1.1 christos if (htab->params->ppc476_workaround && insn == NOP)
10687 1.1 christos insn = BA + 0;
10688 1.1 christos bfd_put_32 (output_bfd, insn, p);
10689 1.1 christos p += 4;
10690 1.1 christos }
10691 1.1 christos p -= 4 * ARRAY_SIZE (pic_plt_resolve);
10692 1.1 christos
10693 1.1 christos bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10694 1.1 christos + htab->glink->output_section->vma
10695 1.1 christos + htab->glink->output_offset);
10696 1.1 christos
10697 1.1 christos bfd_put_32 (output_bfd,
10698 1.1 christos ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
10699 1.1 christos bfd_put_32 (output_bfd,
10700 1.1 christos ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
10701 1.1 christos bfd_put_32 (output_bfd,
10702 1.1 christos ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
10703 1.3 christos if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10704 1.3 christos {
10705 1.3 christos bfd_put_32 (output_bfd,
10706 1.3 christos LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10707 1.3 christos bfd_put_32 (output_bfd,
10708 1.1 christos LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
10709 1.1 christos }
10710 1.1 christos else
10711 1.1 christos {
10712 1.1 christos bfd_put_32 (output_bfd,
10713 1.1 christos LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10714 1.1 christos bfd_put_32 (output_bfd,
10715 1.1 christos LWZ_12_12 + 4, p + 9*4);
10716 1.1 christos }
10717 1.1 christos }
10718 1.1 christos else
10719 1.1 christos {
10720 1.1 christos for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
10721 1.1 christos {
10722 1.1 christos unsigned int insn = plt_resolve[i];
10723 1.1 christos
10724 1.1 christos if (htab->params->ppc476_workaround && insn == NOP)
10725 1.1 christos insn = BA + 0;
10726 1.1 christos bfd_put_32 (output_bfd, insn, p);
10727 1.1 christos p += 4;
10728 1.1 christos }
10729 1.1 christos p -= 4 * ARRAY_SIZE (plt_resolve);
10730 1.1 christos
10731 1.1 christos bfd_put_32 (output_bfd,
10732 1.1 christos LIS_12 + PPC_HA (got + 4), p + 0*4);
10733 1.1 christos bfd_put_32 (output_bfd,
10734 1.1 christos ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
10735 1.1 christos bfd_put_32 (output_bfd,
10736 1.1 christos ADDI_11_11 + PPC_LO (-res0), p + 3*4);
10737 1.1 christos if (PPC_HA (got + 4) == PPC_HA (got + 8))
10738 1.1 christos {
10739 1.1 christos bfd_put_32 (output_bfd,
10740 1.1 christos LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
10741 1.1 christos bfd_put_32 (output_bfd,
10742 1.1 christos LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
10743 1.1 christos }
10744 1.1 christos else
10745 1.1 christos {
10746 1.1 christos bfd_put_32 (output_bfd,
10747 1.1 christos LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
10748 1.1 christos bfd_put_32 (output_bfd,
10749 1.1 christos LWZ_12_12 + 4, p + 6*4);
10750 1.1 christos }
10751 1.1 christos }
10752 1.1 christos }
10753 1.1 christos
10754 1.1 christos if (htab->glink_eh_frame != NULL
10755 1.1 christos && htab->glink_eh_frame->contents != NULL)
10756 1.1 christos {
10757 1.1 christos unsigned char *p = htab->glink_eh_frame->contents;
10758 1.1 christos bfd_vma val;
10759 1.1 christos
10760 1.1 christos p += sizeof (glink_eh_frame_cie);
10761 1.1 christos /* FDE length. */
10762 1.1 christos p += 4;
10763 1.1 christos /* CIE pointer. */
10764 1.3 christos p += 4;
10765 1.1 christos /* Offset to .glink. */
10766 1.3 christos val = (htab->glink->output_section->vma
10767 1.1 christos + htab->glink->output_offset);
10768 1.1 christos val -= (htab->glink_eh_frame->output_section->vma
10769 1.1 christos + htab->glink_eh_frame->output_offset);
10770 1.1 christos val -= p - htab->glink_eh_frame->contents;
10771 1.1 christos bfd_put_32 (htab->elf.dynobj, val, p);
10772 1.1 christos
10773 1.3 christos if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10774 1.1 christos && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10775 1.1 christos htab->glink_eh_frame,
10776 1.3 christos htab->glink_eh_frame->contents))
10777 1.1 christos return FALSE;
10778 1.1 christos }
10779 1.1 christos
10780 1.1 christos return ret;
10781 1.1 christos }
10782 1.1 christos
10783 1.1 christos #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10785 1.1 christos #define TARGET_LITTLE_NAME "elf32-powerpcle"
10786 1.1 christos #define TARGET_BIG_SYM powerpc_elf32_vec
10787 1.1 christos #define TARGET_BIG_NAME "elf32-powerpc"
10788 1.1 christos #define ELF_ARCH bfd_arch_powerpc
10789 1.1 christos #define ELF_TARGET_ID PPC32_ELF_DATA
10790 1.1 christos #define ELF_MACHINE_CODE EM_PPC
10791 1.1 christos #ifdef __QNXTARGET__
10792 1.1 christos #define ELF_MAXPAGESIZE 0x1000
10793 1.3 christos #define ELF_COMMONPAGESIZE 0x1000
10794 1.1 christos #else
10795 1.1 christos #define ELF_MAXPAGESIZE 0x10000
10796 1.1 christos #define ELF_COMMONPAGESIZE 0x10000
10797 1.1 christos #endif
10798 1.1 christos #define ELF_MINPAGESIZE 0x1000
10799 1.1 christos #define elf_info_to_howto ppc_elf_info_to_howto
10800 1.1 christos
10801 1.1 christos #ifdef EM_CYGNUS_POWERPC
10802 1.1 christos #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10803 1.1 christos #endif
10804 1.1 christos
10805 1.1 christos #ifdef EM_PPC_OLD
10806 1.1 christos #define ELF_MACHINE_ALT2 EM_PPC_OLD
10807 1.1 christos #endif
10808 1.1 christos
10809 1.1 christos #define elf_backend_plt_not_loaded 1
10810 1.1 christos #define elf_backend_can_gc_sections 1
10811 1.1 christos #define elf_backend_can_refcount 1
10812 1.1 christos #define elf_backend_rela_normal 1
10813 1.1 christos #define elf_backend_caches_rawsize 1
10814 1.1 christos
10815 1.1 christos #define bfd_elf32_mkobject ppc_elf_mkobject
10816 1.1 christos #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10817 1.1 christos #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10818 1.1 christos #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10819 1.1 christos #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10820 1.1 christos #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10821 1.1 christos #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10822 1.1 christos #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10823 1.1 christos
10824 1.1 christos #define elf_backend_object_p ppc_elf_object_p
10825 1.1 christos #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10826 1.1 christos #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10827 1.1 christos #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10828 1.1 christos #define elf_backend_relocate_section ppc_elf_relocate_section
10829 1.1 christos #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10830 1.1 christos #define elf_backend_check_relocs ppc_elf_check_relocs
10831 1.1 christos #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10832 1.1 christos #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10833 1.1 christos #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10834 1.1 christos #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10835 1.1 christos #define elf_backend_hash_symbol ppc_elf_hash_symbol
10836 1.1 christos #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10837 1.1 christos #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10838 1.1 christos #define elf_backend_fake_sections ppc_elf_fake_sections
10839 1.1 christos #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10840 1.1 christos #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10841 1.1 christos #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10842 1.1 christos #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10843 1.3 christos #define elf_backend_write_core_note ppc_elf_write_core_note
10844 1.1 christos #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10845 1.1 christos #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10846 1.1 christos #define elf_backend_final_write_processing ppc_elf_final_write_processing
10847 1.1 christos #define elf_backend_write_section ppc_elf_write_section
10848 1.1 christos #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10849 1.1 christos #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10850 1.1 christos #define elf_backend_action_discarded ppc_elf_action_discarded
10851 1.1 christos #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10852 1.1 christos #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10853 1.1 christos #define elf_backend_section_processing ppc_elf_section_processing
10854 1.1 christos
10855 1.1 christos #include "elf32-target.h"
10856 1.1 christos
10857 1.1 christos /* FreeBSD Target */
10858 1.1 christos
10859 1.1 christos #undef TARGET_LITTLE_SYM
10860 1.1 christos #undef TARGET_LITTLE_NAME
10861 1.3 christos
10862 1.1 christos #undef TARGET_BIG_SYM
10863 1.1 christos #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10864 1.1 christos #undef TARGET_BIG_NAME
10865 1.1 christos #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10866 1.1 christos
10867 1.1 christos #undef ELF_OSABI
10868 1.1 christos #define ELF_OSABI ELFOSABI_FREEBSD
10869 1.1 christos
10870 1.1 christos #undef elf32_bed
10871 1.1 christos #define elf32_bed elf32_powerpc_fbsd_bed
10872 1.1 christos
10873 1.1 christos #include "elf32-target.h"
10874 1.1 christos
10875 1.1 christos /* VxWorks Target */
10876 1.1 christos
10877 1.1 christos #undef TARGET_LITTLE_SYM
10878 1.1 christos #undef TARGET_LITTLE_NAME
10879 1.1 christos
10880 1.1 christos #undef TARGET_BIG_SYM
10881 1.1 christos #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10882 1.1 christos #undef TARGET_BIG_NAME
10883 1.1 christos #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10884 1.1 christos
10885 1.1 christos #undef ELF_OSABI
10886 1.1 christos
10887 1.1 christos /* VxWorks uses the elf default section flags for .plt. */
10888 1.1 christos static const struct bfd_elf_special_section *
10889 1.1 christos ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
10890 1.1 christos {
10891 1.1 christos if (sec->name == NULL)
10892 1.1 christos return NULL;
10893 1.1 christos
10894 1.1 christos if (strcmp (sec->name, ".plt") == 0)
10895 1.1 christos return _bfd_elf_get_sec_type_attr (abfd, sec);
10896 1.1 christos
10897 1.1 christos return ppc_elf_get_sec_type_attr (abfd, sec);
10898 1.1 christos }
10899 1.1 christos
10900 1.1 christos /* Like ppc_elf_link_hash_table_create, but overrides
10901 1.1 christos appropriately for VxWorks. */
10902 1.1 christos static struct bfd_link_hash_table *
10903 1.1 christos ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10904 1.1 christos {
10905 1.1 christos struct bfd_link_hash_table *ret;
10906 1.1 christos
10907 1.1 christos ret = ppc_elf_link_hash_table_create (abfd);
10908 1.1 christos if (ret)
10909 1.1 christos {
10910 1.1 christos struct ppc_elf_link_hash_table *htab
10911 1.1 christos = (struct ppc_elf_link_hash_table *)ret;
10912 1.1 christos htab->is_vxworks = 1;
10913 1.1 christos htab->plt_type = PLT_VXWORKS;
10914 1.1 christos htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10915 1.1 christos htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10916 1.1 christos htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10917 1.1 christos }
10918 1.1 christos return ret;
10919 1.1 christos }
10920 1.1 christos
10921 1.1 christos /* Tweak magic VxWorks symbols as they are loaded. */
10922 1.1 christos static bfd_boolean
10923 1.1 christos ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10924 1.1 christos struct bfd_link_info *info,
10925 1.1 christos Elf_Internal_Sym *sym,
10926 1.1 christos const char **namep ATTRIBUTE_UNUSED,
10927 1.1 christos flagword *flagsp ATTRIBUTE_UNUSED,
10928 1.1 christos asection **secp,
10929 1.1 christos bfd_vma *valp)
10930 1.1 christos {
10931 1.1 christos if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
10932 1.1 christos valp))
10933 1.1 christos return FALSE;
10934 1.1 christos
10935 1.1 christos return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
10936 1.1 christos }
10937 1.1 christos
10938 1.1 christos static void
10939 1.1 christos ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10940 1.1 christos {
10941 1.1 christos ppc_elf_final_write_processing(abfd, linker);
10942 1.1 christos elf_vxworks_final_write_processing(abfd, linker);
10943 1.1 christos }
10944 1.1 christos
10945 1.1 christos /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10946 1.1 christos define it. */
10947 1.1 christos #undef elf_backend_want_plt_sym
10948 1.1 christos #define elf_backend_want_plt_sym 1
10949 1.1 christos #undef elf_backend_want_got_plt
10950 1.1 christos #define elf_backend_want_got_plt 1
10951 1.1 christos #undef elf_backend_got_symbol_offset
10952 1.1 christos #define elf_backend_got_symbol_offset 0
10953 1.1 christos #undef elf_backend_plt_not_loaded
10954 1.1 christos #define elf_backend_plt_not_loaded 0
10955 1.1 christos #undef elf_backend_plt_readonly
10956 1.1 christos #define elf_backend_plt_readonly 1
10957 1.1 christos #undef elf_backend_got_header_size
10958 1.1 christos #define elf_backend_got_header_size 12
10959 1.1 christos
10960 1.1 christos #undef bfd_elf32_get_synthetic_symtab
10961 1.1 christos
10962 1.1 christos #undef bfd_elf32_bfd_link_hash_table_create
10963 1.1 christos #define bfd_elf32_bfd_link_hash_table_create \
10964 1.1 christos ppc_elf_vxworks_link_hash_table_create
10965 1.1 christos #undef elf_backend_add_symbol_hook
10966 #define elf_backend_add_symbol_hook \
10967 ppc_elf_vxworks_add_symbol_hook
10968 #undef elf_backend_link_output_symbol_hook
10969 #define elf_backend_link_output_symbol_hook \
10970 elf_vxworks_link_output_symbol_hook
10971 #undef elf_backend_final_write_processing
10972 #define elf_backend_final_write_processing \
10973 ppc_elf_vxworks_final_write_processing
10974 #undef elf_backend_get_sec_type_attr
10975 #define elf_backend_get_sec_type_attr \
10976 ppc_elf_vxworks_get_sec_type_attr
10977 #undef elf_backend_emit_relocs
10978 #define elf_backend_emit_relocs \
10979 elf_vxworks_emit_relocs
10980
10981 #undef elf32_bed
10982 #define elf32_bed ppc_elf_vxworks_bed
10983 #undef elf_backend_post_process_headers
10984
10985 #include "elf32-target.h"
10986