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* config.sub (case $basic_machine): Add tic80 entries.
[deliverable/binutils-gdb.git] / bfd / elf32-ppc.c
CommitLineData
bcbe2c71 1/* PowerPC-specific support for 32-bit ELF
71897943 2 Copyright 1994, 1995, 1996 Free Software Foundation, Inc.
bcbe2c71
MM		 3 Written by Ian Lance Taylor, Cygnus Support.
4
5This file is part of BFD, the Binary File Descriptor library.
6
7This program is free software; you can redistribute it and/or modify
8it under the terms of the GNU General Public License as published by
9the Free Software Foundation; either version 2 of the License, or
10(at your option) any later version.
11
12This program is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15GNU General Public License for more details.
16
17You should have received a copy of the GNU General Public License
18along with this program; if not, write to the Free Software
dd82c578 19Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
bcbe2c71
MM		 20
21/* This file is based on a preliminary PowerPC ELF ABI. The
22 information may not match the final PowerPC ELF ABI. It includes
23 suggestions from the in-progress Embedded PowerPC ABI, and that
24 information may also not match. */
25
26#include "bfd.h"
27#include "sysdep.h"
ede4eed4 28#include "bfdlink.h"
bcbe2c71 29#include "libbfd.h"
08556813 30#include "elf-bfd.h"
ede4eed4 31#include "elf/ppc.h"
bcbe2c71 32
08556813
MM		 33#define USE_RELA /* we want RELA relocations, not REL */
34
35/* PowerPC relocations defined by the ABIs */
36enum ppc_reloc_type
37{
38 R_PPC_NONE = 0,
39 R_PPC_ADDR32 = 1,
40 R_PPC_ADDR24 = 2,
41 R_PPC_ADDR16 = 3,
42 R_PPC_ADDR16_LO = 4,
43 R_PPC_ADDR16_HI = 5,
44 R_PPC_ADDR16_HA = 6,
45 R_PPC_ADDR14 = 7,
46 R_PPC_ADDR14_BRTAKEN = 8,
47 R_PPC_ADDR14_BRNTAKEN = 9,
48 R_PPC_REL24 = 10,
49 R_PPC_REL14 = 11,
50 R_PPC_REL14_BRTAKEN = 12,
51 R_PPC_REL14_BRNTAKEN = 13,
52 R_PPC_GOT16 = 14,
53 R_PPC_GOT16_LO = 15,
54 R_PPC_GOT16_HI = 16,
55 R_PPC_GOT16_HA = 17,
56 R_PPC_PLTREL24 = 18,
57 R_PPC_COPY = 19,
58 R_PPC_GLOB_DAT = 20,
59 R_PPC_JMP_SLOT = 21,
60 R_PPC_RELATIVE = 22,
61 R_PPC_LOCAL24PC = 23,
62 R_PPC_UADDR32 = 24,
63 R_PPC_UADDR16 = 25,
64 R_PPC_REL32 = 26,
65 R_PPC_PLT32 = 27,
66 R_PPC_PLTREL32 = 28,
67 R_PPC_PLT16_LO = 29,
68 R_PPC_PLT16_HI = 30,
69 R_PPC_PLT16_HA = 31,
70 R_PPC_SDAREL16 = 32,
71 R_PPC_SECTOFF = 33,
72 R_PPC_SECTOFF_LO = 34,
73 R_PPC_SECTOFF_HI = 35,
74 R_PPC_SECTOFF_HA = 36,
75
76 /* The remaining relocs are from the Embedded ELF ABI, and are not
77 in the SVR4 ELF ABI. */
78 R_PPC_EMB_NADDR32 = 101,
79 R_PPC_EMB_NADDR16 = 102,
80 R_PPC_EMB_NADDR16_LO = 103,
81 R_PPC_EMB_NADDR16_HI = 104,
82 R_PPC_EMB_NADDR16_HA = 105,
83 R_PPC_EMB_SDAI16 = 106,
84 R_PPC_EMB_SDA2I16 = 107,
85 R_PPC_EMB_SDA2REL = 108,
86 R_PPC_EMB_SDA21 = 109,
87 R_PPC_EMB_MRKREF = 110,
88 R_PPC_EMB_RELSEC16 = 111,
89 R_PPC_EMB_RELST_LO = 112,
90 R_PPC_EMB_RELST_HI = 113,
91 R_PPC_EMB_RELST_HA = 114,
92 R_PPC_EMB_BIT_FLD = 115,
93 R_PPC_EMB_RELSDA = 116,
94
95 /* This is a phony reloc to handle any old fashioned TOC16 references
96 that may still be in object files. */
97 R_PPC_TOC16 = 255,
98
99 R_PPC_max
100};
101
ede4eed4 102static reloc_howto_type *ppc_elf_reloc_type_lookup
bcbe2c71 103 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
ede4eed4 104static void ppc_elf_info_to_howto
bcbe2c71 105 PARAMS ((bfd *abfd, arelent *cache_ptr, Elf32_Internal_Rela *dst));
ede4eed4 106static void ppc_elf_howto_init PARAMS ((void));
dab45734
ILT		 107static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
108 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
ede4eed4
KR		 109static boolean ppc_elf_set_private_flags PARAMS ((bfd *, flagword));
110static boolean ppc_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *));
111static boolean ppc_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *));
112
3f7ca26b
MM		 113static int ppc_elf_additional_program_headers PARAMS ((bfd *));
114static boolean ppc_elf_modify_segment_map PARAMS ((bfd *));
115
83f4323e
MM		 116static boolean ppc_elf_section_from_shdr PARAMS ((bfd *,
117 Elf32_Internal_Shdr *,
118 char *));
119
3b3753b8
MM		 120static elf_linker_section_t *ppc_elf_create_linker_section
121 PARAMS ((bfd *abfd,
122 struct bfd_link_info *info,
123 enum elf_linker_section_enum));
1c3a295b 124
08556813
MM		 125static boolean ppc_elf_check_relocs PARAMS ((bfd *,
126 struct bfd_link_info *,
127 asection *,
128 const Elf_Internal_Rela *));
129
130static boolean ppc_elf_adjust_dynamic_symbol PARAMS ((struct bfd_link_info *,
131 struct elf_link_hash_entry *));
132
133static boolean ppc_elf_adjust_dynindx PARAMS ((struct elf_link_hash_entry *, PTR));
134
135static boolean ppc_elf_size_dynamic_sections PARAMS ((bfd *, struct bfd_link_info *));
136
ede4eed4
KR		 137static boolean ppc_elf_relocate_section PARAMS ((bfd *,
138 struct bfd_link_info *info,
139 bfd *,
140 asection *,
141 bfd_byte *,
142 Elf_Internal_Rela *relocs,
143 Elf_Internal_Sym *local_syms,
144 asection **));
bcbe2c71 145
9d621c7d
MM		 146static boolean ppc_elf_add_symbol_hook PARAMS ((bfd *,
147 struct bfd_link_info *,
148 const Elf_Internal_Sym *,
149 const char **,
150 flagword *,
151 asection **,
152 bfd_vma *));
153
08556813
MM		 154static boolean ppc_elf_finish_dynamic_symbol PARAMS ((bfd *,
155 struct bfd_link_info *,
156 struct elf_link_hash_entry *,
157 Elf_Internal_Sym *));
bcbe2c71 158
08556813 159static boolean ppc_elf_finish_dynamic_sections PARAMS ((bfd *, struct bfd_link_info *));
bcbe2c71 160
d8fd85ad
MM		 161#define BRANCH_PREDICT_BIT 0x200000 /* branch prediction bit for branch taken relocs */
162#define RA_REGISTER_MASK 0x001f0000 /* mask to set RA in memory instructions */
163#define RA_REGISTER_SHIFT 16 /* value to shift register by to insert RA */
08556813
MM		 164
165/* The name of the dynamic interpreter. This is put in the .interp
166 section. */
167
168#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
bcbe2c71 169
3f7ca26b
MM		 170/* The size in bytes of an entry in the procedure linkage table, and of the initial size
171 of the plt reserved for the dynamic linker. */
172
173#define PLT_ENTRY_SIZE 12
174#define PLT_INITIAL_ENTRY_SIZE 72
175
ede4eed4
KR		 176\f
177static reloc_howto_type *ppc_elf_howto_table[ (int)R_PPC_max ];
178
179static reloc_howto_type ppc_elf_howto_raw[] =
bcbe2c71
MM		 180{
181 /* This reloc does nothing. */
08556813
MM		 182 HOWTO (R_PPC_NONE, /* type */
183 0, /* rightshift */
184 2, /* size (0 = byte, 1 = short, 2 = long) */
185 32, /* bitsize */
186 false, /* pc_relative */
187 0, /* bitpos */
bcbe2c71 188 complain_overflow_bitfield, /* complain_on_overflow */
bd2d10c0 189 bfd_elf_generic_reloc, /* special_function */
08556813
MM		 190 "R_PPC_NONE", /* name */
191 false, /* partial_inplace */
192 0, /* src_mask */
193 0, /* dst_mask */
194 false), /* pcrel_offset */
bcbe2c71
MM		 195
196 /* A standard 32 bit relocation. */
08556813
MM		 197 HOWTO (R_PPC_ADDR32, /* type */
198 0, /* rightshift */
199 2, /* size (0 = byte, 1 = short, 2 = long) */
200 32, /* bitsize */
201 false, /* pc_relative */
202 0, /* bitpos */
bcbe2c71 203 complain_overflow_bitfield, /* complain_on_overflow */
bd2d10c0 204 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 205 "R_PPC_ADDR32", /* name */
08556813
MM		 206 false, /* partial_inplace */
207 0, /* src_mask */
208 0xffffffff, /* dst_mask */
209 false), /* pcrel_offset */
bcbe2c71
MM		 210
211 /* An absolute 26 bit branch; the lower two bits must be zero.
212 FIXME: we don't check that, we just clear them. */
08556813
MM		 213 HOWTO (R_PPC_ADDR24, /* type */
214 0, /* rightshift */
215 2, /* size (0 = byte, 1 = short, 2 = long) */
216 26, /* bitsize */
217 false, /* pc_relative */
218 0, /* bitpos */
bcbe2c71 219 complain_overflow_bitfield, /* complain_on_overflow */
bd2d10c0 220 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 221 "R_PPC_ADDR24", /* name */
08556813
MM		 222 false, /* partial_inplace */
223 0, /* src_mask */
224 0x3fffffc, /* dst_mask */
225 false), /* pcrel_offset */
bcbe2c71
MM		 226
227 /* A standard 16 bit relocation. */
08556813
MM		 228 HOWTO (R_PPC_ADDR16, /* type */
229 0, /* rightshift */
230 1, /* size (0 = byte, 1 = short, 2 = long) */
231 16, /* bitsize */
232 false, /* pc_relative */
233 0, /* bitpos */
bcbe2c71 234 complain_overflow_bitfield, /* complain_on_overflow */
bd2d10c0 235 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 236 "R_PPC_ADDR16", /* name */
08556813
MM		 237 false, /* partial_inplace */
238 0, /* src_mask */
239 0xffff, /* dst_mask */
240 false), /* pcrel_offset */
bcbe2c71
MM		 241
242 /* A 16 bit relocation without overflow. */
08556813
MM		 243 HOWTO (R_PPC_ADDR16_LO, /* type */
244 0, /* rightshift */
245 1, /* size (0 = byte, 1 = short, 2 = long) */
246 16, /* bitsize */
247 false, /* pc_relative */
248 0, /* bitpos */
bcbe2c71 249 complain_overflow_dont,/* complain_on_overflow */
bd2d10c0 250 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 251 "R_PPC_ADDR16_LO", /* name */
08556813
MM		 252 false, /* partial_inplace */
253 0, /* src_mask */
254 0xffff, /* dst_mask */
255 false), /* pcrel_offset */
bcbe2c71
MM		 256
257 /* The high order 16 bits of an address. */
08556813
MM		 258 HOWTO (R_PPC_ADDR16_HI, /* type */
259 16, /* rightshift */
260 1, /* size (0 = byte, 1 = short, 2 = long) */
261 16, /* bitsize */
262 false, /* pc_relative */
263 0, /* bitpos */
bcbe2c71 264 complain_overflow_dont, /* complain_on_overflow */
bd2d10c0 265 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 266 "R_PPC_ADDR16_HI", /* name */
08556813
MM		 267 false, /* partial_inplace */
268 0, /* src_mask */
269 0xffff, /* dst_mask */
270 false), /* pcrel_offset */
bcbe2c71
MM		 271
272 /* The high order 16 bits of an address, plus 1 if the contents of
08556813
MM		 273 the low 16 bits, treated as a signed number, is negative. */
274 HOWTO (R_PPC_ADDR16_HA, /* type */
275 16, /* rightshift */
276 1, /* size (0 = byte, 1 = short, 2 = long) */
277 16, /* bitsize */
278 false, /* pc_relative */
279 0, /* bitpos */
bcbe2c71 280 complain_overflow_dont, /* complain_on_overflow */
dab45734 281 ppc_elf_addr16_ha_reloc, /* special_function */
bcbe2c71 282 "R_PPC_ADDR16_HA", /* name */
08556813
MM		 283 false, /* partial_inplace */
284 0, /* src_mask */
285 0xffff, /* dst_mask */
286 false), /* pcrel_offset */
bcbe2c71
MM		 287
288 /* An absolute 16 bit branch; the lower two bits must be zero.
289 FIXME: we don't check that, we just clear them. */
08556813
MM		 290 HOWTO (R_PPC_ADDR14, /* type */
291 0, /* rightshift */
292 2, /* size (0 = byte, 1 = short, 2 = long) */
293 16, /* bitsize */
294 false, /* pc_relative */
295 0, /* bitpos */
bcbe2c71 296 complain_overflow_bitfield, /* complain_on_overflow */
bd2d10c0 297 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 298 "R_PPC_ADDR14", /* name */
08556813
MM		 299 false, /* partial_inplace */
300 0, /* src_mask */
301 0xfffc, /* dst_mask */
302 false), /* pcrel_offset */
bcbe2c71
MM		 303
304 /* An absolute 16 bit branch, for which bit 10 should be set to
08556813
MM		 305 indicate that the branch is expected to be taken. The lower two
306 bits must be zero. */
307 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
308 0, /* rightshift */
309 2, /* size (0 = byte, 1 = short, 2 = long) */
310 16, /* bitsize */
311 false, /* pc_relative */
312 0, /* bitpos */
bcbe2c71 313 complain_overflow_bitfield, /* complain_on_overflow */
07a159db 314 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 315 "R_PPC_ADDR14_BRTAKEN",/* name */
08556813
MM		 316 false, /* partial_inplace */
317 0, /* src_mask */
318 0xfffc, /* dst_mask */
319 false), /* pcrel_offset */
bcbe2c71
MM		 320
321 /* An absolute 16 bit branch, for which bit 10 should be set to
322 indicate that the branch is not expected to be taken. The lower
323 two bits must be zero. */
324 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
08556813
MM		 325 0, /* rightshift */
326 2, /* size (0 = byte, 1 = short, 2 = long) */
327 16, /* bitsize */
328 false, /* pc_relative */
329 0, /* bitpos */
bcbe2c71 330 complain_overflow_bitfield, /* complain_on_overflow */
07a159db 331 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 332 "R_PPC_ADDR14_BRNTAKEN",/* name */
08556813
MM		 333 false, /* partial_inplace */
334 0, /* src_mask */
335 0xfffc, /* dst_mask */
336 false), /* pcrel_offset */
337
338 /* A relative 26 bit branch; the lower two bits must be zero. */
339 HOWTO (R_PPC_REL24, /* type */
340 0, /* rightshift */
341 2, /* size (0 = byte, 1 = short, 2 = long) */
342 26, /* bitsize */
343 true, /* pc_relative */
344 0, /* bitpos */
bcbe2c71 345 complain_overflow_signed, /* complain_on_overflow */
bd2d10c0 346 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 347 "R_PPC_REL24", /* name */
08556813
MM		 348 false, /* partial_inplace */
349 0, /* src_mask */
350 0x3fffffc, /* dst_mask */
351 true), /* pcrel_offset */
352
353 /* A relative 16 bit branch; the lower two bits must be zero. */
354 HOWTO (R_PPC_REL14, /* type */
355 0, /* rightshift */
356 2, /* size (0 = byte, 1 = short, 2 = long) */
357 16, /* bitsize */
358 true, /* pc_relative */
359 0, /* bitpos */
bcbe2c71 360 complain_overflow_signed, /* complain_on_overflow */
bd2d10c0 361 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 362 "R_PPC_REL14", /* name */
08556813
MM		 363 false, /* partial_inplace */
364 0, /* src_mask */
365 0xfffc, /* dst_mask */
366 true), /* pcrel_offset */
bcbe2c71 367
08556813 368 /* A relative 16 bit branch. Bit 10 should be set to indicate that
bcbe2c71
MM		 369 the branch is expected to be taken. The lower two bits must be
370 zero. */
08556813
MM		 371 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
372 0, /* rightshift */
373 2, /* size (0 = byte, 1 = short, 2 = long) */
374 16, /* bitsize */
375 true, /* pc_relative */
376 0, /* bitpos */
bcbe2c71 377 complain_overflow_signed, /* complain_on_overflow */
07a159db 378 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 379 "R_PPC_REL14_BRTAKEN", /* name */
08556813
MM		 380 false, /* partial_inplace */
381 0, /* src_mask */
382 0xfffc, /* dst_mask */
383 true), /* pcrel_offset */
bcbe2c71 384
08556813 385 /* A relative 16 bit branch. Bit 10 should be set to indicate that
bcbe2c71
MM		 386 the branch is not expected to be taken. The lower two bits must
387 be zero. */
08556813
MM		 388 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
389 0, /* rightshift */
390 2, /* size (0 = byte, 1 = short, 2 = long) */
391 16, /* bitsize */
392 true, /* pc_relative */
393 0, /* bitpos */
bcbe2c71 394 complain_overflow_signed, /* complain_on_overflow */
07a159db 395 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 396 "R_PPC_REL14_BRNTAKEN",/* name */
08556813
MM		 397 false, /* partial_inplace */
398 0, /* src_mask */
399 0xfffc, /* dst_mask */
400 true), /* pcrel_offset */
bcbe2c71
MM		 401
402 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
403 symbol. */
08556813
MM		 404 HOWTO (R_PPC_GOT16, /* type */
405 0, /* rightshift */
406 1, /* size (0 = byte, 1 = short, 2 = long) */
407 16, /* bitsize */
408 false, /* pc_relative */
409 0, /* bitpos */
ede4eed4 410 complain_overflow_signed, /* complain_on_overflow */
07a159db 411 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 412 "R_PPC_GOT16", /* name */
08556813
MM		 413 false, /* partial_inplace */
414 0, /* src_mask */
415 0xffff, /* dst_mask */
416 false), /* pcrel_offset */
bcbe2c71
MM		 417
418 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
419 the symbol. */
08556813
MM		 420 HOWTO (R_PPC_GOT16_LO, /* type */
421 0, /* rightshift */
422 1, /* size (0 = byte, 1 = short, 2 = long) */
423 16, /* bitsize */
424 false, /* pc_relative */
425 0, /* bitpos */
bcbe2c71 426 complain_overflow_bitfield, /* complain_on_overflow */
07a159db 427 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 428 "R_PPC_GOT16_LO", /* name */
08556813
MM		 429 false, /* partial_inplace */
430 0, /* src_mask */
431 0xffff, /* dst_mask */
432 false), /* pcrel_offset */
bcbe2c71
MM		 433
434 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
435 the symbol. */
08556813
MM		 436 HOWTO (R_PPC_GOT16_HI, /* type */
437 16, /* rightshift */
438 1, /* size (0 = byte, 1 = short, 2 = long) */
439 16, /* bitsize */
440 false, /* pc_relative */
441 0, /* bitpos */
bcbe2c71 442 complain_overflow_bitfield, /* complain_on_overflow */
07a159db 443 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 444 "R_PPC_GOT16_HI", /* name */
08556813
MM		 445 false, /* partial_inplace */
446 0, /* src_mask */
447 0xffff, /* dst_mask */
448 false), /* pcrel_offset */
bcbe2c71
MM		 449
450 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
cf5138e3 451 the symbol. */
08556813
MM		 452 HOWTO (R_PPC_GOT16_HA, /* type */
453 0, /* rightshift */
454 1, /* size (0 = byte, 1 = short, 2 = long) */
455 16, /* bitsize */
456 false, /* pc_relative */
457 0, /* bitpos */
bcbe2c71 458 complain_overflow_bitfield, /* complain_on_overflow */
bd2d10c0 459 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 460 "R_PPC_GOT16_HA", /* name */
08556813
MM		 461 false, /* partial_inplace */
462 0, /* src_mask */
463 0xffff, /* dst_mask */
464 false), /* pcrel_offset */
bcbe2c71
MM		 465
466 /* Like R_PPC_REL24, but referring to the procedure linkage table
467 entry for the symbol. FIXME: Not supported. */
02f85cda 468 HOWTO (R_PPC_PLTREL24, /* type */
08556813
MM		 469 0, /* rightshift */
470 2, /* size (0 = byte, 1 = short, 2 = long) */
471 26, /* bitsize */
472 true, /* pc_relative */
473 0, /* bitpos */
474 complain_overflow_signed, /* complain_on_overflow */
bd2d10c0 475 bfd_elf_generic_reloc, /* special_function */
02f85cda 476 "R_PPC_PLTREL24", /* name */
08556813
MM		 477 false, /* partial_inplace */
478 0, /* src_mask */
479 0x3fffffc, /* dst_mask */
480 true), /* pcrel_offset */
bcbe2c71
MM		 481
482 /* This is used only by the dynamic linker. The symbol should exist
483 both in the object being run and in some shared library. The
484 dynamic linker copies the data addressed by the symbol from the
485 shared library into the object. I have no idea what the purpose
486 of this is. */
08556813
MM		 487 HOWTO (R_PPC_COPY, /* type */
488 0, /* rightshift */
489 2, /* size (0 = byte, 1 = short, 2 = long) */
490 32, /* bitsize */
491 false, /* pc_relative */
492 0, /* bitpos */
bcbe2c71 493 complain_overflow_bitfield, /* complain_on_overflow */
bd2d10c0 494 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 495 "R_PPC_COPY", /* name */
08556813
MM		 496 false, /* partial_inplace */
497 0, /* src_mask */
498 0, /* dst_mask */
499 false), /* pcrel_offset */
bcbe2c71
MM		 500
501 /* Like R_PPC_ADDR32, but used when setting global offset table
502 entries. */
08556813
MM		 503 HOWTO (R_PPC_GLOB_DAT, /* type */
504 0, /* rightshift */
505 2, /* size (0 = byte, 1 = short, 2 = long) */
506 32, /* bitsize */
507 false, /* pc_relative */
508 0, /* bitpos */
bcbe2c71 509 complain_overflow_bitfield, /* complain_on_overflow */
bd2d10c0 510 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 511 "R_PPC_GLOB_DAT", /* name */
08556813
MM		 512 false, /* partial_inplace */
513 0, /* src_mask */
514 0xffffffff, /* dst_mask */
515 false), /* pcrel_offset */
bcbe2c71
MM		 516
517 /* Marks a procedure linkage table entry for a symbol. */
08556813
MM		 518 HOWTO (R_PPC_JMP_SLOT, /* type */
519 0, /* rightshift */
520 2, /* size (0 = byte, 1 = short, 2 = long) */
521 32, /* bitsize */
522 false, /* pc_relative */
523 0, /* bitpos */
bcbe2c71 524 complain_overflow_bitfield, /* complain_on_overflow */
bd2d10c0 525 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 526 "R_PPC_JMP_SLOT", /* name */
08556813
MM		 527 false, /* partial_inplace */
528 0, /* src_mask */
529 0, /* dst_mask */
530 false), /* pcrel_offset */
bcbe2c71
MM		 531
532 /* Used only by the dynamic linker. When the object is run, this
533 longword is set to the load address of the object, plus the
534 addend. */
08556813
MM		 535 HOWTO (R_PPC_RELATIVE, /* type */
536 0, /* rightshift */
537 2, /* size (0 = byte, 1 = short, 2 = long) */
538 32, /* bitsize */
539 false, /* pc_relative */
540 0, /* bitpos */
bcbe2c71 541 complain_overflow_bitfield, /* complain_on_overflow */
bd2d10c0 542 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 543 "R_PPC_RELATIVE", /* name */
08556813
MM		 544 false, /* partial_inplace */
545 0, /* src_mask */
546 0xffffffff, /* dst_mask */
547 false), /* pcrel_offset */
bcbe2c71
MM		 548
549 /* Like R_PPC_REL24, but uses the value of the symbol within the
550 object rather than the final value. Normally used for
551 _GLOBAL_OFFSET_TABLE_. FIXME: Not supported. */
08556813
MM		 552 HOWTO (R_PPC_LOCAL24PC, /* type */
553 0, /* rightshift */
554 2, /* size (0 = byte, 1 = short, 2 = long) */
555 26, /* bitsize */
556 true, /* pc_relative */
557 0, /* bitpos */
bcbe2c71 558 complain_overflow_signed, /* complain_on_overflow */
bd2d10c0 559 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 560 "R_PPC_LOCAL24PC", /* name */
08556813
MM		 561 false, /* partial_inplace */
562 0, /* src_mask */
563 0x3fffffc, /* dst_mask */
564 true), /* pcrel_offset */
bcbe2c71
MM		 565
566 /* Like R_PPC_ADDR32, but may be unaligned. */
08556813
MM		 567 HOWTO (R_PPC_UADDR32, /* type */
568 0, /* rightshift */
569 2, /* size (0 = byte, 1 = short, 2 = long) */
570 32, /* bitsize */
571 false, /* pc_relative */
572 0, /* bitpos */
bcbe2c71 573 complain_overflow_bitfield, /* complain_on_overflow */
bd2d10c0 574 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 575 "R_PPC_UADDR32", /* name */
08556813
MM		 576 false, /* partial_inplace */
577 0, /* src_mask */
578 0xffffffff, /* dst_mask */
579 false), /* pcrel_offset */
bcbe2c71
MM		 580
581 /* Like R_PPC_ADDR16, but may be unaligned. */
08556813
MM		 582 HOWTO (R_PPC_UADDR16, /* type */
583 0, /* rightshift */
584 1, /* size (0 = byte, 1 = short, 2 = long) */
585 16, /* bitsize */
586 false, /* pc_relative */
587 0, /* bitpos */
bcbe2c71 588 complain_overflow_bitfield, /* complain_on_overflow */
bd2d10c0 589 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 590 "R_PPC_UADDR16", /* name */
08556813
MM		 591 false, /* partial_inplace */
592 0, /* src_mask */
593 0xffff, /* dst_mask */
594 false), /* pcrel_offset */
bcbe2c71
MM		 595
596 /* 32-bit PC relative */
597 HOWTO (R_PPC_REL32, /* type */
08556813
MM		 598 0, /* rightshift */
599 2, /* size (0 = byte, 1 = short, 2 = long) */
600 32, /* bitsize */
601 true, /* pc_relative */
602 0, /* bitpos */
bcbe2c71 603 complain_overflow_bitfield, /* complain_on_overflow */
bd2d10c0 604 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 605 "R_PPC_REL32", /* name */
08556813
MM		 606 false, /* partial_inplace */
607 0, /* src_mask */
608 0xffffffff, /* dst_mask */
bcbe2c71
MM		 609 true), /* pcrel_offset */
610
611 /* 32-bit relocation to the symbol's procedure linkage table.
612 FIXEME: not supported. */
613 HOWTO (R_PPC_PLT32, /* type */
08556813
MM		 614 0, /* rightshift */
615 2, /* size (0 = byte, 1 = short, 2 = long) */
616 32, /* bitsize */
617 false, /* pc_relative */
618 0, /* bitpos */
bcbe2c71 619 complain_overflow_bitfield, /* complain_on_overflow */
bd2d10c0 620 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 621 "R_PPC_PLT32", /* name */
08556813
MM		 622 false, /* partial_inplace */
623 0, /* src_mask */
624 0, /* dst_mask */
625 false), /* pcrel_offset */
bcbe2c71
MM		 626
627 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
628 FIXEME: not supported. */
629 HOWTO (R_PPC_PLTREL32, /* type */
08556813
MM		 630 0, /* rightshift */
631 2, /* size (0 = byte, 1 = short, 2 = long) */
632 32, /* bitsize */
633 true, /* pc_relative */
634 0, /* bitpos */
bcbe2c71 635 complain_overflow_bitfield, /* complain_on_overflow */
bd2d10c0 636 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 637 "R_PPC_PLTREL32", /* name */
08556813
MM		 638 false, /* partial_inplace */
639 0, /* src_mask */
640 0, /* dst_mask */
bcbe2c71
MM		 641 true), /* pcrel_offset */
642
643 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
644 the symbol. */
08556813
MM		 645 HOWTO (R_PPC_PLT16_LO, /* type */
646 0, /* rightshift */
647 1, /* size (0 = byte, 1 = short, 2 = long) */
648 16, /* bitsize */
649 false, /* pc_relative */
650 0, /* bitpos */
bcbe2c71 651 complain_overflow_bitfield, /* complain_on_overflow */
bd2d10c0 652 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 653 "R_PPC_PLT16_LO", /* name */
08556813
MM		 654 false, /* partial_inplace */
655 0, /* src_mask */
656 0xffff, /* dst_mask */
657 false), /* pcrel_offset */
bcbe2c71
MM		 658
659 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
660 the symbol. */
08556813
MM		 661 HOWTO (R_PPC_PLT16_HI, /* type */
662 16, /* rightshift */
663 1, /* size (0 = byte, 1 = short, 2 = long) */
664 16, /* bitsize */
665 false, /* pc_relative */
666 0, /* bitpos */
bcbe2c71 667 complain_overflow_bitfield, /* complain_on_overflow */
bd2d10c0 668 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 669 "R_PPC_PLT16_HI", /* name */
08556813
MM		 670 false, /* partial_inplace */
671 0, /* src_mask */
672 0xffff, /* dst_mask */
673 false), /* pcrel_offset */
bcbe2c71
MM		 674
675 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
08556813
MM		 676 the symbol. FIXME: Not supported. */
677 HOWTO (R_PPC_PLT16_HA, /* type */
678 0, /* rightshift */
679 1, /* size (0 = byte, 1 = short, 2 = long) */
680 16, /* bitsize */
681 false, /* pc_relative */
682 0, /* bitpos */
bcbe2c71 683 complain_overflow_bitfield, /* complain_on_overflow */
bd2d10c0 684 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 685 "R_PPC_PLT16_HA", /* name */
08556813
MM		 686 false, /* partial_inplace */
687 0, /* src_mask */
688 0xffff, /* dst_mask */
689 false), /* pcrel_offset */
bcbe2c71 690
4500a112 691 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
cf5138e3 692 small data items. */
02f85cda 693 HOWTO (R_PPC_SDAREL16, /* type */
08556813
MM		 694 0, /* rightshift */
695 1, /* size (0 = byte, 1 = short, 2 = long) */
696 16, /* bitsize */
697 false, /* pc_relative */
698 0, /* bitpos */
dd82c578 699 complain_overflow_signed, /* complain_on_overflow */
07a159db 700 bfd_elf_generic_reloc, /* special_function */
02f85cda 701 "R_PPC_SDAREL16", /* name */
08556813
MM		 702 false, /* partial_inplace */
703 0, /* src_mask */
704 0xffff, /* dst_mask */
705 false), /* pcrel_offset */
bcbe2c71 706
cf5138e3 707 /* 32-bit section relative relocation. */
bcbe2c71 708 HOWTO (R_PPC_SECTOFF, /* type */
08556813
MM		 709 0, /* rightshift */
710 2, /* size (0 = byte, 1 = short, 2 = long) */
711 32, /* bitsize */
712 true, /* pc_relative */
713 0, /* bitpos */
bcbe2c71 714 complain_overflow_bitfield, /* complain_on_overflow */
bd2d10c0 715 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 716 "R_PPC_SECTOFF", /* name */
08556813
MM		 717 false, /* partial_inplace */
718 0, /* src_mask */
719 0, /* dst_mask */
bcbe2c71
MM		 720 true), /* pcrel_offset */
721
cf5138e3 722 /* 16-bit lower half section relative relocation. */
08556813
MM		 723 HOWTO (R_PPC_SECTOFF_LO, /* type */
724 0, /* rightshift */
725 1, /* size (0 = byte, 1 = short, 2 = long) */
726 16, /* bitsize */
727 false, /* pc_relative */
728 0, /* bitpos */
bcbe2c71 729 complain_overflow_bitfield, /* complain_on_overflow */
bd2d10c0 730 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 731 "R_PPC_SECTOFF_LO", /* name */
08556813
MM		 732 false, /* partial_inplace */
733 0, /* src_mask */
734 0xffff, /* dst_mask */
735 false), /* pcrel_offset */
bcbe2c71 736
cf5138e3 737 /* 16-bit upper half section relative relocation. */
bcbe2c71 738 HOWTO (R_PPC_SECTOFF_HI, /* type */
08556813
MM		 739 16, /* rightshift */
740 1, /* size (0 = byte, 1 = short, 2 = long) */
741 16, /* bitsize */
742 false, /* pc_relative */
743 0, /* bitpos */
bcbe2c71 744 complain_overflow_bitfield, /* complain_on_overflow */
bd2d10c0 745 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 746 "R_PPC_SECTOFF_HI", /* name */
08556813
MM		 747 false, /* partial_inplace */
748 0, /* src_mask */
749 0xffff, /* dst_mask */
750 false), /* pcrel_offset */
bcbe2c71 751
cf5138e3 752 /* 16-bit upper half adjusted section relative relocation. */
bcbe2c71 753 HOWTO (R_PPC_SECTOFF_HA, /* type */
08556813
MM		 754 0, /* rightshift */
755 1, /* size (0 = byte, 1 = short, 2 = long) */
756 16, /* bitsize */
757 false, /* pc_relative */
758 0, /* bitpos */
bcbe2c71 759 complain_overflow_bitfield, /* complain_on_overflow */
bd2d10c0 760 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 761 "R_PPC_SECTOFF_HA", /* name */
08556813
MM		 762 false, /* partial_inplace */
763 0, /* src_mask */
764 0xffff, /* dst_mask */
765 false), /* pcrel_offset */
bcbe2c71
MM		 766
767 /* The remaining relocs are from the Embedded ELF ABI, and are not
768 in the SVR4 ELF ABI. */
769
770 /* 32 bit value resulting from the addend minus the symbol */
771 HOWTO (R_PPC_EMB_NADDR32, /* type */
08556813
MM		 772 0, /* rightshift */
773 2, /* size (0 = byte, 1 = short, 2 = long) */
774 32, /* bitsize */
775 false, /* pc_relative */
776 0, /* bitpos */
bcbe2c71 777 complain_overflow_bitfield, /* complain_on_overflow */
bd2d10c0 778 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 779 "R_PPC_EMB_NADDR32", /* name */
08556813
MM		 780 false, /* partial_inplace */
781 0, /* src_mask */
782 0xffffffff, /* dst_mask */
783 false), /* pcrel_offset */
bcbe2c71 784
4500a112 785 /* 16 bit value resulting from the addend minus the symbol */
bcbe2c71 786 HOWTO (R_PPC_EMB_NADDR16, /* type */
08556813
MM		 787 0, /* rightshift */
788 1, /* size (0 = byte, 1 = short, 2 = long) */
789 16, /* bitsize */
790 false, /* pc_relative */
791 0, /* bitpos */
bcbe2c71 792 complain_overflow_bitfield, /* complain_on_overflow */
bd2d10c0 793 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 794 "R_PPC_EMB_NADDR16", /* name */
08556813
MM		 795 false, /* partial_inplace */
796 0, /* src_mask */
797 0xffff, /* dst_mask */
798 false), /* pcrel_offset */
bcbe2c71
MM		 799
800 /* 16 bit value resulting from the addend minus the symbol */
801 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
08556813
MM		 802 0, /* rightshift */
803 1, /* size (0 = byte, 1 = short, 2 = long) */
804 16, /* bitsize */
805 false, /* pc_relative */
806 0, /* bitpos */
bcbe2c71 807 complain_overflow_dont,/* complain_on_overflow */
bd2d10c0 808 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 809 "R_PPC_EMB_ADDR16_LO", /* name */
08556813
MM		 810 false, /* partial_inplace */
811 0, /* src_mask */
812 0xffff, /* dst_mask */
813 false), /* pcrel_offset */
bcbe2c71
MM		 814
815 /* The high order 16 bits of the addend minus the symbol */
816 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
08556813
MM		 817 16, /* rightshift */
818 1, /* size (0 = byte, 1 = short, 2 = long) */
819 16, /* bitsize */
820 false, /* pc_relative */
821 0, /* bitpos */
bcbe2c71 822 complain_overflow_dont, /* complain_on_overflow */
bd2d10c0 823 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 824 "R_PPC_EMB_NADDR16_HI", /* name */
08556813
MM		 825 false, /* partial_inplace */
826 0, /* src_mask */
827 0xffff, /* dst_mask */
828 false), /* pcrel_offset */
bcbe2c71
MM		 829
830 /* The high order 16 bits of the result of the addend minus the address,
831 plus 1 if the contents of the low 16 bits, treated as a signed number,
832 is negative. */
833 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
08556813
MM		 834 16, /* rightshift */
835 1, /* size (0 = byte, 1 = short, 2 = long) */
836 16, /* bitsize */
837 false, /* pc_relative */
838 0, /* bitpos */
bcbe2c71 839 complain_overflow_dont, /* complain_on_overflow */
bd2d10c0 840 bfd_elf_generic_reloc, /* special_function */
bcbe2c71 841 "R_PPC_EMB_NADDR16_HA", /* name */
08556813
MM		 842 false, /* partial_inplace */
843 0, /* src_mask */
844 0xffff, /* dst_mask */
845 false), /* pcrel_offset */
846
4500a112
MM		 847 /* 16 bit value resulting from allocating a 4 byte word to hold an
848 address in the .sdata section, and returning the offset from
849 _SDA_BASE_ for that relocation */
850 HOWTO (R_PPC_EMB_SDAI16, /* type */
851 0, /* rightshift */
852 1, /* size (0 = byte, 1 = short, 2 = long) */
853 16, /* bitsize */
854 false, /* pc_relative */
855 0, /* bitpos */
856 complain_overflow_bitfield, /* complain_on_overflow */
857 bfd_elf_generic_reloc, /* special_function */
858 "R_PPC_EMB_SDAI16", /* name */
859 false, /* partial_inplace */
860 0, /* src_mask */
861 0xffff, /* dst_mask */
862 false), /* pcrel_offset */
863
864 /* 16 bit value resulting from allocating a 4 byte word to hold an
865 address in the .sdata2 section, and returning the offset from
866 _SDA2_BASE_ for that relocation */
867 HOWTO (R_PPC_EMB_SDA2I16, /* type */
868 0, /* rightshift */
869 1, /* size (0 = byte, 1 = short, 2 = long) */
870 16, /* bitsize */
871 false, /* pc_relative */
872 0, /* bitpos */
873 complain_overflow_bitfield, /* complain_on_overflow */
874 bfd_elf_generic_reloc, /* special_function */
875 "R_PPC_EMB_SDA2I16", /* name */
876 false, /* partial_inplace */
877 0, /* src_mask */
878 0xffff, /* dst_mask */
879 false), /* pcrel_offset */
880
881 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
cf5138e3 882 small data items. */
4500a112
MM		 883 HOWTO (R_PPC_EMB_SDA2REL, /* type */
884 0, /* rightshift */
885 1, /* size (0 = byte, 1 = short, 2 = long) */
886 16, /* bitsize */
887 false, /* pc_relative */
888 0, /* bitpos */
889 complain_overflow_signed, /* complain_on_overflow */
890 bfd_elf_generic_reloc, /* special_function */
891 "R_PPC_EMB_SDA2REL", /* name */
892 false, /* partial_inplace */
893 0, /* src_mask */
894 0xffff, /* dst_mask */
895 false), /* pcrel_offset */
896
897 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
898 signed offset from the appropriate base, and filling in the register
899 field with the appropriate register (0, 2, or 13). */
900 HOWTO (R_PPC_EMB_SDA21, /* type */
901 0, /* rightshift */
cf5138e3 902 2, /* size (0 = byte, 1 = short, 2 = long) */
4500a112
MM		 903 16, /* bitsize */
904 false, /* pc_relative */
905 0, /* bitpos */
906 complain_overflow_signed, /* complain_on_overflow */
907 bfd_elf_generic_reloc, /* special_function */
908 "R_PPC_EMB_SDA21", /* name */
909 false, /* partial_inplace */
910 0, /* src_mask */
911 0xffff, /* dst_mask */
912 false), /* pcrel_offset */
913
914 /* Relocation not handled: R_PPC_EMB_MRKREF */
915 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
916 /* Relocation not handled: R_PPC_EMB_RELST_LO */
917 /* Relocation not handled: R_PPC_EMB_RELST_HI */
918 /* Relocation not handled: R_PPC_EMB_RELST_HA */
919 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
920
921 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
922 in the 16 bit signed offset from the appropriate base, and filling in the
923 register field with the appropriate register (0, 2, or 13). */
924 HOWTO (R_PPC_EMB_RELSDA, /* type */
925 0, /* rightshift */
926 1, /* size (0 = byte, 1 = short, 2 = long) */
927 16, /* bitsize */
928 true, /* pc_relative */
929 0, /* bitpos */
930 complain_overflow_signed, /* complain_on_overflow */
931 bfd_elf_generic_reloc, /* special_function */
932 "R_PPC_EMB_RELSDA", /* name */
933 false, /* partial_inplace */
934 0, /* src_mask */
935 0xffff, /* dst_mask */
936 false), /* pcrel_offset */
937
08556813
MM		 938 /* Phony reloc to handle AIX style TOC entries */
939 HOWTO (R_PPC_TOC16, /* type */
940 0, /* rightshift */
941 1, /* size (0 = byte, 1 = short, 2 = long) */
942 16, /* bitsize */
943 false, /* pc_relative */
944 0, /* bitpos */
945 complain_overflow_signed, /* complain_on_overflow */
07a159db 946 bfd_elf_generic_reloc, /* special_function */
08556813
MM		 947 "R_PPC_TOC16", /* name */
948 false, /* partial_inplace */
949 0, /* src_mask */
950 0xffff, /* dst_mask */
951 false), /* pcrel_offset */
bcbe2c71
MM		 952};
953
ede4eed4
KR		 954\f
955/* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
956
957static void
958ppc_elf_howto_init ()
959{
960 unsigned int i, type;
961
962 for (i = 0; i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); i++)
963 {
964 type = ppc_elf_howto_raw[i].type;
965 BFD_ASSERT (type < sizeof(ppc_elf_howto_table) / sizeof(ppc_elf_howto_table[0]));
966 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
967 }
968}
969
970\f
971static reloc_howto_type *
972ppc_elf_reloc_type_lookup (abfd, code)
973 bfd *abfd;
974 bfd_reloc_code_real_type code;
975{
08556813 976 enum ppc_reloc_type ppc_reloc = R_PPC_NONE;
02f85cda 977
ede4eed4
KR		 978 if (!ppc_elf_howto_table[ R_PPC_ADDR32 ]) /* Initialize howto table if needed */
979 ppc_elf_howto_init ();
980
981 switch ((int)code)
982 {
02f85cda
MM		 983 default:
984 return (reloc_howto_type *)NULL;
985
986 case BFD_RELOC_NONE: ppc_reloc = R_PPC_NONE; break;
987 case BFD_RELOC_32: ppc_reloc = R_PPC_ADDR32; break;
988 case BFD_RELOC_PPC_BA26: ppc_reloc = R_PPC_ADDR24; break;
989 case BFD_RELOC_16: ppc_reloc = R_PPC_ADDR16; break;
990 case BFD_RELOC_LO16: ppc_reloc = R_PPC_ADDR16_LO; break;
991 case BFD_RELOC_HI16: ppc_reloc = R_PPC_ADDR16_HI; break;
992 case BFD_RELOC_HI16_S: ppc_reloc = R_PPC_ADDR16_HA; break;
993 case BFD_RELOC_PPC_BA16: ppc_reloc = R_PPC_ADDR14; break;
994 case BFD_RELOC_PPC_BA16_BRTAKEN: ppc_reloc = R_PPC_ADDR14_BRTAKEN; break;
995 case BFD_RELOC_PPC_BA16_BRNTAKEN: ppc_reloc = R_PPC_ADDR14_BRNTAKEN; break;
996 case BFD_RELOC_PPC_B26: ppc_reloc = R_PPC_REL24; break;
997 case BFD_RELOC_PPC_B16: ppc_reloc = R_PPC_REL14; break;
998 case BFD_RELOC_PPC_B16_BRTAKEN: ppc_reloc = R_PPC_REL14_BRTAKEN; break;
999 case BFD_RELOC_PPC_B16_BRNTAKEN: ppc_reloc = R_PPC_REL14_BRNTAKEN; break;
08556813 1000 case BFD_RELOC_16_GOTOFF: ppc_reloc = R_PPC_GOT16; break;
02f85cda
MM		 1001 case BFD_RELOC_LO16_GOTOFF: ppc_reloc = R_PPC_GOT16_LO; break;
1002 case BFD_RELOC_HI16_GOTOFF: ppc_reloc = R_PPC_GOT16_HI; break;
1003 case BFD_RELOC_HI16_S_GOTOFF: ppc_reloc = R_PPC_GOT16_HA; break;
1004 case BFD_RELOC_24_PLT_PCREL: ppc_reloc = R_PPC_PLTREL24; break;
1005 case BFD_RELOC_PPC_COPY: ppc_reloc = R_PPC_COPY; break;
1006 case BFD_RELOC_PPC_GLOB_DAT: ppc_reloc = R_PPC_GLOB_DAT; break;
1007 case BFD_RELOC_PPC_LOCAL24PC: ppc_reloc = R_PPC_LOCAL24PC; break;
1008 case BFD_RELOC_32_PCREL: ppc_reloc = R_PPC_REL32; break;
1009 case BFD_RELOC_32_PLTOFF: ppc_reloc = R_PPC_PLT32; break;
1010 case BFD_RELOC_32_PLT_PCREL: ppc_reloc = R_PPC_PLTREL32; break;
1011 case BFD_RELOC_LO16_PLTOFF: ppc_reloc = R_PPC_PLT16_LO; break;
1012 case BFD_RELOC_HI16_PLTOFF: ppc_reloc = R_PPC_PLT16_HI; break;
1013 case BFD_RELOC_HI16_S_PLTOFF: ppc_reloc = R_PPC_PLT16_HA; break;
1014 case BFD_RELOC_GPREL16: ppc_reloc = R_PPC_SDAREL16; break;
1015 case BFD_RELOC_32_BASEREL: ppc_reloc = R_PPC_SECTOFF; break;
1016 case BFD_RELOC_LO16_BASEREL: ppc_reloc = R_PPC_SECTOFF_LO; break;
1017 case BFD_RELOC_HI16_BASEREL: ppc_reloc = R_PPC_SECTOFF_HI; break;
1018 case BFD_RELOC_HI16_S_BASEREL: ppc_reloc = R_PPC_SECTOFF_HA; break;
1019 case BFD_RELOC_CTOR: ppc_reloc = R_PPC_ADDR32; break;
08556813 1020 case BFD_RELOC_PPC_TOC16: ppc_reloc = R_PPC_TOC16; break;
4500a112
MM		 1021 case BFD_RELOC_PPC_EMB_NADDR32: ppc_reloc = R_PPC_EMB_NADDR32; break;
1022 case BFD_RELOC_PPC_EMB_NADDR16: ppc_reloc = R_PPC_EMB_NADDR16; break;
1023 case BFD_RELOC_PPC_EMB_NADDR16_LO: ppc_reloc = R_PPC_EMB_NADDR16_LO; break;
1024 case BFD_RELOC_PPC_EMB_NADDR16_HI: ppc_reloc = R_PPC_EMB_NADDR16_HI; break;
1025 case BFD_RELOC_PPC_EMB_NADDR16_HA: ppc_reloc = R_PPC_EMB_NADDR16_HA; break;
1026 case BFD_RELOC_PPC_EMB_SDAI16: ppc_reloc = R_PPC_EMB_SDAI16; break;
1027 case BFD_RELOC_PPC_EMB_SDA2I16: ppc_reloc = R_PPC_EMB_SDA2I16; break;
1028 case BFD_RELOC_PPC_EMB_SDA2REL: ppc_reloc = R_PPC_EMB_SDA2REL; break;
1029 case BFD_RELOC_PPC_EMB_SDA21: ppc_reloc = R_PPC_EMB_SDA21; break;
1030 case BFD_RELOC_PPC_EMB_MRKREF: ppc_reloc = R_PPC_EMB_MRKREF; break;
1031 case BFD_RELOC_PPC_EMB_RELSEC16: ppc_reloc = R_PPC_EMB_RELSEC16; break;
1032 case BFD_RELOC_PPC_EMB_RELST_LO: ppc_reloc = R_PPC_EMB_RELST_LO; break;
1033 case BFD_RELOC_PPC_EMB_RELST_HI: ppc_reloc = R_PPC_EMB_RELST_HI; break;
1034 case BFD_RELOC_PPC_EMB_RELST_HA: ppc_reloc = R_PPC_EMB_RELST_HA; break;
1035 case BFD_RELOC_PPC_EMB_BIT_FLD: ppc_reloc = R_PPC_EMB_BIT_FLD; break;
1036 case BFD_RELOC_PPC_EMB_RELSDA: ppc_reloc = R_PPC_EMB_RELSDA; break;
ede4eed4
KR		 1037 }
1038
02f85cda 1039 return ppc_elf_howto_table[ (int)ppc_reloc ];
ede4eed4
KR		 1040};
1041
1042/* Set the howto pointer for a PowerPC ELF reloc. */
1043
1044static void
1045ppc_elf_info_to_howto (abfd, cache_ptr, dst)
1046 bfd *abfd;
1047 arelent *cache_ptr;
1048 Elf32_Internal_Rela *dst;
1049{
1050 if (!ppc_elf_howto_table[ R_PPC_ADDR32 ]) /* Initialize howto table if needed */
1051 ppc_elf_howto_init ();
1052
1053 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1054 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
1055}
1056
dab45734
ILT		 1057/* Handle the R_PPC_ADDR16_HA reloc. */
1058
1059static bfd_reloc_status_type
1060ppc_elf_addr16_ha_reloc (abfd, reloc_entry, symbol, data, input_section,
1061 output_bfd, error_message)
1062 bfd *abfd;
1063 arelent *reloc_entry;
1064 asymbol *symbol;
1065 PTR data;
1066 asection *input_section;
1067 bfd *output_bfd;
1068 char **error_message;
1069{
1070 bfd_vma relocation;
1071
1072 if (output_bfd != NULL)
1073 {
1074 reloc_entry->address += input_section->output_offset;
1075 return bfd_reloc_ok;
1076 }
1077
1078 if (reloc_entry->address > input_section->_cooked_size)
1079 return bfd_reloc_outofrange;
1080
1081 if (bfd_is_com_section (symbol->section))
1082 relocation = 0;
1083 else
1084 relocation = symbol->value;
1085
1086 relocation += symbol->section->output_section->vma;
1087 relocation += symbol->section->output_offset;
1088 relocation += reloc_entry->addend;
1089
1090 reloc_entry->addend += (relocation & 0x8000) << 1;
1091
1092 return bfd_reloc_continue;
1093}
1094
ede4eed4
KR		 1095/* Function to set whether a module needs the -mrelocatable bit set. */
1096
1097static boolean
1098ppc_elf_set_private_flags (abfd, flags)
1099 bfd *abfd;
1100 flagword flags;
1101{
761f377f 1102 BFD_ASSERT (!elf_flags_init (abfd)
ede4eed4
KR		 1103 || elf_elfheader (abfd)->e_flags == flags);
1104
1105 elf_elfheader (abfd)->e_flags = flags;
761f377f 1106 elf_flags_init (abfd) = true;
ede4eed4
KR		 1107 return true;
1108}
1109
1110/* Copy backend specific data from one object module to another */
1111static boolean
1112ppc_elf_copy_private_bfd_data (ibfd, obfd)
1113 bfd *ibfd;
1114 bfd *obfd;
1115{
e7bab9df
MM		 1116 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
1117 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
ede4eed4
KR		 1118 return true;
1119
761f377f 1120 BFD_ASSERT (!elf_flags_init (obfd)
ede4eed4
KR		 1121 || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags);
1122
1123 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
761f377f 1124 elf_flags_init (obfd) = true;
ede4eed4
KR		 1125 return true;
1126}
1127
1128/* Merge backend specific data from an object file to the output
1129 object file when linking */
1130static boolean
1131ppc_elf_merge_private_bfd_data (ibfd, obfd)
1132 bfd *ibfd;
1133 bfd *obfd;
1134{
1135 flagword old_flags;
1136 flagword new_flags;
08556813 1137 boolean error;
ede4eed4
KR		 1138
1139 /* Check if we have the same endianess */
07a159db
MM		 1140 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
1141 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
ede4eed4 1142 {
7a7fbffb 1143 (*_bfd_error_handler)
07a159db 1144 ("%s: compiled for a %s endian system and target is %s endian",
7a7fbffb 1145 bfd_get_filename (ibfd),
08556813
MM		 1146 bfd_big_endian (ibfd) ? "big" : "little",
1147 bfd_big_endian (obfd) ? "big" : "little");
ede4eed4
KR		 1148
1149 bfd_set_error (bfd_error_wrong_format);
1150 return false;
1151 }
1152
e7bab9df
MM		 1153 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
1154 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
ede4eed4
KR		 1155 return true;
1156
1157 new_flags = elf_elfheader (ibfd)->e_flags;
1158 old_flags = elf_elfheader (obfd)->e_flags;
761f377f 1159 if (!elf_flags_init (obfd)) /* First call, no flags set */
ede4eed4 1160 {
761f377f 1161 elf_flags_init (obfd) = true;
ede4eed4
KR		 1162 elf_elfheader (obfd)->e_flags = new_flags;
1163 }
1164
1165 else if (new_flags == old_flags) /* Compatible flags are ok */
1166 ;
1167
1168 else /* Incompatible flags */
1169 {
dd82c578
MM		 1170 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib to be linked
1171 with either. */
08556813 1172 error = false;
dd82c578
MM		 1173 if ((new_flags & EF_PPC_RELOCATABLE) != 0
1174 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
ede4eed4 1175 {
08556813 1176 error = true;
7a7fbffb 1177 (*_bfd_error_handler)
07a159db 1178 ("%s: compiled with -mrelocatable and linked with modules compiled normally",
7a7fbffb 1179 bfd_get_filename (ibfd));
ede4eed4 1180 }
08eb30b6 1181 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
dd82c578 1182 && (old_flags & EF_PPC_RELOCATABLE) != 0)
ede4eed4 1183 {
08556813 1184 error = true;
7a7fbffb 1185 (*_bfd_error_handler)
07a159db 1186 ("%s: compiled normally and linked with modules compiled with -mrelocatable",
7a7fbffb 1187 bfd_get_filename (ibfd));
ede4eed4 1188 }
e7bab9df
MM		 1189 /* If -mrelocatable-lib is linked with an object without -mrelocatable-lib, turn off
1190 the -mrelocatable-lib, since at least one module isn't relocatable. */
1191 else if ((old_flags & EF_PPC_RELOCATABLE_LIB) != 0
1192 && (new_flags & EF_PPC_RELOCATABLE_LIB) == 0)
1193 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
dd82c578 1194
ede4eed4 1195
3cbe19d2
MM		 1196 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if any module uses it */
1197 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
1198
1199 new_flags &= ~ (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
1200 old_flags &= ~ (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
ede4eed4
KR		 1201
1202 /* Warn about any other mismatches */
1203 if (new_flags != old_flags)
08556813
MM		 1204 {
1205 error = true;
1206 (*_bfd_error_handler)
07a159db 1207 ("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)",
08556813
MM		 1208 bfd_get_filename (ibfd), (long)new_flags, (long)old_flags);
1209 }
ede4eed4 1210
08556813
MM		 1211 if (error)
1212 {
1213 bfd_set_error (bfd_error_bad_value);
1214 return false;
1215 }
ede4eed4
KR		 1216 }
1217
1218 return true;
1219}
1220
83f4323e
MM		 1221\f
1222/* Handle a PowerPC specific section when reading an object file. This
1223 is called when elfcode.h finds a section with an unknown type. */
1224
1225static boolean
1226ppc_elf_section_from_shdr (abfd, hdr, name)
1227 bfd *abfd;
1228 Elf32_Internal_Shdr *hdr;
1229 char *name;
1230{
1231 asection *newsect;
1232 flagword flags;
1233
1234 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
1235 return false;
1236
1237 newsect = hdr->bfd_section;
1238 flags = bfd_get_section_flags (abfd, newsect);
1239 if (hdr->sh_flags & SHF_EXCLUDE)
1240 flags |= SEC_EXCLUDE;
1241
1242 if (hdr->sh_type == SHT_ORDERED)
1243 flags |= SEC_SORT_ENTRIES;
1244
1245 bfd_set_section_flags (abfd, newsect, flags);
1246 return true;
1247}
1248
57081126
MM		 1249\f
1250/* Set up any other section flags and such that may be necessary. */
1251
1252boolean
1253ppc_elf_fake_sections (abfd, shdr, asect)
1254 bfd *abfd;
1255 Elf32_Internal_Shdr *shdr;
1256 asection *asect;
1257{
1258 if ((asect->flags & SEC_EXCLUDE) != 0)
1259 shdr->sh_flags |= SHF_EXCLUDE;
1260
1261 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1262 shdr->sh_type = SHT_ORDERED;
3f7ca26b
MM		 1263
1264 return true;
57081126
MM		 1265}
1266
1c3a295b 1267\f
3b3753b8
MM		 1268/* Create a special linker section */
1269static elf_linker_section_t *
1270ppc_elf_create_linker_section (abfd, info, which)
1c3a295b
MM		 1271 bfd *abfd;
1272 struct bfd_link_info *info;
3b3753b8 1273 enum elf_linker_section_enum which;
1c3a295b 1274{
3b3753b8
MM		 1275 bfd *dynobj = elf_hash_table (info)->dynobj;
1276 elf_linker_section_t *lsect;
1c3a295b 1277
3b3753b8
MM		 1278 /* Record the first bfd section that needs the special section */
1279 if (!dynobj)
1280 dynobj = elf_hash_table (info)->dynobj = abfd;
1c3a295b 1281
3b3753b8
MM		 1282 /* If this is the first time, create the section */
1283 lsect = elf_linker_section (dynobj, which);
1284 if (!lsect)
1c3a295b 1285 {
3b3753b8
MM		 1286 elf_linker_section_t defaults;
1287 static elf_linker_section_t zero_section;
1288
1289 defaults = zero_section;
1290 defaults.which = which;
1291 defaults.hole_written_p = false;
1292 defaults.alignment = 2;
1293 defaults.flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY;
1294
1295 switch (which)
1296 {
1297 default:
1298 (*_bfd_error_handler) ("%s: Unknown special linker type %d",
1299 bfd_get_filename (abfd),
1300 (int)which);
1301
1302 bfd_set_error (bfd_error_bad_value);
1303 return (elf_linker_section_t *)0;
1304
1305 case LINKER_SECTION_GOT: /* .got section */
1306 defaults.name = ".got";
1307 defaults.rel_name = ".rela.got";
1308 defaults.sym_name = "_GLOBAL_OFFSET_TABLE_";
1309 defaults.max_hole_offset = 32764;
1310 defaults.hole_size = 16;
1311 defaults.sym_offset = 4;
1312 break;
1313
3f7ca26b
MM		 1314 case LINKER_SECTION_PLT: /* .plt section */
1315 defaults.name = ".plt";
1316 defaults.rel_name = ".rela.plt";
1317 defaults.sym_name = (char *)0;
1318 defaults.max_hole_offset = 0;
1319 defaults.hole_size = 0;
1320 defaults.sym_offset = 0;
1321 defaults.flags &= ~SEC_LOAD;
1322 break;
1323
3b3753b8
MM		 1324 case LINKER_SECTION_SDATA: /* .sdata/.sbss section */
1325 defaults.name = ".sdata";
1326 defaults.rel_name = ".rela.sdata";
1327 defaults.bss_name = ".sbss";
1328 defaults.sym_name = "_SDA_BASE_";
05f927dd 1329 defaults.sym_offset = 32768;
3b3753b8
MM		 1330 break;
1331
1332 case LINKER_SECTION_SDATA2: /* .sdata2/.sbss2 section */
1333 defaults.name = ".sdata2";
1334 defaults.rel_name = ".rela.sdata2";
1335 defaults.bss_name = ".sbss2";
1336 defaults.sym_name = "_SDA2_BASE_";
05f927dd 1337 defaults.sym_offset = 32768;
3f7ca26b 1338 defaults.flags |= SEC_READONLY;
3b3753b8
MM		 1339 break;
1340 }
1341
1342 lsect = _bfd_elf_create_linker_section (abfd, info, which, &defaults);
1c3a295b
MM		 1343 }
1344
3b3753b8 1345 return lsect;
1c3a295b
MM		 1346}
1347
3f7ca26b
MM		 1348\f
1349/* If we have a non-zero sized .sbss2 or .PPC.EMB.sbss0 sections, we need to bump up
1350 the number of section headers. */
1351
1352static int
1353ppc_elf_additional_program_headers (abfd)
1354 bfd *abfd;
1355{
1356 asection *s;
1357 int ret;
1358
1359 ret = 0;
1360
1361 s = bfd_get_section_by_name (abfd, ".interp");
1362 if (s != NULL)
1363 ++ret;
1364
1365 s = bfd_get_section_by_name (abfd, ".sbss2");
1366 if (s != NULL && (s->flags & SEC_LOAD) != 0 && s->_raw_size > 0)
1367 ++ret;
1368
1369 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
1370 if (s != NULL && (s->flags & SEC_LOAD) != 0 && s->_raw_size > 0)
1371 ++ret;
1372
1373 return ret;
1374}
1375
1376/* Modify the segment map if needed */
1377
1378static boolean
1379ppc_elf_modify_segment_map (abfd)
1380 bfd *abfd;
1381{
1382 return true;
1383}
08556813
MM		 1384\f
1385/* Adjust a symbol defined by a dynamic object and referenced by a
1386 regular object. The current definition is in some section of the
1387 dynamic object, but we're not including those sections. We have to
1388 change the definition to something the rest of the link can
1389 understand. */
1390
1391static boolean
1392ppc_elf_adjust_dynamic_symbol (info, h)
1393 struct bfd_link_info *info;
1394 struct elf_link_hash_entry *h;
1395{
3f7ca26b
MM		 1396 bfd *dynobj = elf_hash_table (info)->dynobj;
1397 asection *s;
1398 unsigned int power_of_two;
1399 bfd_vma plt_offset;
1400
08556813 1401#ifdef DEBUG
3f7ca26b 1402 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n", h->root.root.string);
08556813 1403#endif
3f7ca26b
MM		 1404
1405 /* Make sure we know what is going on here. */
1406 BFD_ASSERT (dynobj != NULL
1407 && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
1408 || h->weakdef != NULL
1409 || ((h->elf_link_hash_flags
1410 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
1411 && (h->elf_link_hash_flags
1412 & ELF_LINK_HASH_REF_REGULAR) != 0
1413 && (h->elf_link_hash_flags
1414 & ELF_LINK_HASH_DEF_REGULAR) == 0)));
1415
1416
1417 /* If this is a function, put it in the procedure linkage table. We
1418 will fill in the contents of the procedure linkage table later,
1419 when we know the address of the .got section. */
1420 if (h->type == STT_FUNC
1421 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
1422 {
1423 if (! info->shared
1424 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
1425 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0)
1426 {
1427 /* This case can occur if we saw a PLT32 reloc in an input
1428 file, but the symbol was never referred to by a dynamic
1429 object. In such a case, we don't actually need to build
1430 a procedure linkage table, and we can just do a PC32
1431 reloc instead. */
1432 BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0);
1433 return true;
1434 }
1435
1436 /* Make sure this symbol is output as a dynamic symbol. */
1437 if (h->dynindx == -1)
1438 {
1439 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
1440 return false;
1441 }
1442
1443 s = bfd_get_section_by_name (dynobj, ".plt");
1444 BFD_ASSERT (s != NULL);
1445
1446 /* If this is the first .plt entry, make room for the special
1447 first entry. */
1448 if (s->_raw_size == 0)
1449 s->_raw_size += PLT_INITIAL_ENTRY_SIZE;
1450
1451 /* The PowerPC PLT is actually composed of two parts, the first part
1452 is 2 words (for a load and a jump), and then there is a remaining
1453 word available at the end. */
1454 plt_offset = (PLT_INITIAL_ENTRY_SIZE
1455 + 8 * ((s->_raw_size - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE));
1456
1457 /* If this symbol is not defined in a regular file, and we are
1458 not generating a shared library, then set the symbol to this
1459 location in the .plt. This is required to make function
1460 pointers compare as equal between the normal executable and
1461 the shared library. */
1462 if (! info->shared
1463 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
1464 {
1465 h->root.u.def.section = s;
1466 h->root.u.def.value = plt_offset;
1467 }
1468
1469 h->plt_offset = plt_offset;
1470
1471 /* Make room for this entry. */
1472 s->_raw_size += PLT_ENTRY_SIZE;
1473
e7bab9df
MM		 1474#if 0
1475 /* We also need to make an entry in the .got.plt section, which
1476 will be placed in the .got section by the linker script. */
1477
1478 s = bfd_get_section_by_name (dynobj, ".got.plt");
1479 BFD_ASSERT (s != NULL);
1480 s->_raw_size += 4;
1481#endif
1482
3f7ca26b
MM		 1483 /* We also need to make an entry in the .rela.plt section. */
1484
1485 s = bfd_get_section_by_name (dynobj, ".rela.plt");
1486 BFD_ASSERT (s != NULL);
1487 s->_raw_size += sizeof (Elf32_External_Rela);
1488
1489 return true;
1490 }
1491
1492 /* If this is a weak symbol, and there is a real definition, the
1493 processor independent code will have arranged for us to see the
1494 real definition first, and we can just use the same value. */
1495 if (h->weakdef != NULL)
1496 {
1497 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
1498 || h->weakdef->root.type == bfd_link_hash_defweak);
1499 h->root.u.def.section = h->weakdef->root.u.def.section;
1500 h->root.u.def.value = h->weakdef->root.u.def.value;
1501 return true;
1502 }
1503
1504 /* This is a reference to a symbol defined by a dynamic object which
1505 is not a function. */
1506
1507 /* If we are creating a shared library, we must presume that the
1508 only references to the symbol are via the global offset table.
1509 For such cases we need not do anything here; the relocations will
1510 be handled correctly by relocate_section. */
1511 if (info->shared)
1512 return true;
1513
1514 /* We must allocate the symbol in our .dynbss section, which will
1515 become part of the .bss section of the executable. There will be
1516 an entry for this symbol in the .dynsym section. The dynamic
1517 object will contain position independent code, so all references
1518 from the dynamic object to this symbol will go through the global
1519 offset table. The dynamic linker will use the .dynsym entry to
1520 determine the address it must put in the global offset table, so
1521 both the dynamic object and the regular object will refer to the
1522 same memory location for the variable. */
1523
1524 s = bfd_get_section_by_name (dynobj, ".dynbss");
1525 BFD_ASSERT (s != NULL);
1526
1527 /* If the symbol is currently defined in the .bss section of the
1528 dynamic object, then it is OK to simply initialize it to zero.
1529 If the symbol is in some other section, we must generate a
dab45734 1530 R_PPC_COPY reloc to tell the dynamic linker to copy the initial
3f7ca26b
MM		 1531 value out of the dynamic object and into the runtime process
1532 image. We need to remember the offset into the .rela.bss section
1533 we are going to use. */
1534 if ((h->root.u.def.section->flags & SEC_LOAD) != 0)
1535 {
1536 asection *srel;
1537
1538 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
1539 BFD_ASSERT (srel != NULL);
1540 srel->_raw_size += sizeof (Elf32_External_Rel);
1541 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
1542 }
1543
1544 /* We need to figure out the alignment required for this symbol. I
1545 have no idea how ELF linkers handle this. */
1546 power_of_two = bfd_log2 (h->size);
1547 if (power_of_two > 3)
1548 power_of_two = 3;
1549
1550 /* Apply the required alignment. */
1551 s->_raw_size = BFD_ALIGN (s->_raw_size,
1552 (bfd_size_type) (1 << power_of_two));
1553 if (power_of_two > bfd_get_section_alignment (dynobj, s))
1554 {
1555 if (! bfd_set_section_alignment (dynobj, s, power_of_two))
1556 return false;
1557 }
1558
1559 /* Define the symbol as being at this point in the section. */
1560 h->root.u.def.section = s;
1561 h->root.u.def.value = s->_raw_size;
1562
1563 /* Increment the section size to make room for the symbol. */
1564 s->_raw_size += h->size;
1565
08556813
MM		 1566 return true;
1567}
1568
1569\f
1570/* Increment the index of a dynamic symbol by a given amount. Called
1571 via elf_link_hash_traverse. */
1572
1573static boolean
1574ppc_elf_adjust_dynindx (h, cparg)
1575 struct elf_link_hash_entry *h;
1576 PTR cparg;
1577{
1578 int *cp = (int *) cparg;
1579
1580#ifdef DEBUG
1581 fprintf (stderr, "ppc_elf_adjust_dynindx called, h->dynindx = %d, *cp = %d\n", h->dynindx, *cp);
1582#endif
1583
1584 if (h->dynindx != -1)
1585 h->dynindx += *cp;
1586
1587 return true;
1588}
1589
1590\f
1591/* Set the sizes of the dynamic sections. */
1592
1593static boolean
1594ppc_elf_size_dynamic_sections (output_bfd, info)
1595 bfd *output_bfd;
1596 struct bfd_link_info *info;
1597{
1598 bfd *dynobj;
1599 asection *s;
3f7ca26b
MM		 1600 boolean plt;
1601 boolean relocs;
08556813 1602 boolean reltext;
08556813
MM		 1603
1604#ifdef DEBUG
1605 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
1606#endif
1607
1608 dynobj = elf_hash_table (info)->dynobj;
1609 BFD_ASSERT (dynobj != NULL);
1610
1611 if (elf_hash_table (info)->dynamic_sections_created)
1612 {
1613 /* Set the contents of the .interp section to the interpreter. */
1614 if (! info->shared)
1615 {
1616 s = bfd_get_section_by_name (dynobj, ".interp");
1617 BFD_ASSERT (s != NULL);
1618 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
1619 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1620 }
08556813
MM		 1621 }
1622 else
1623 {
3b3753b8 1624 /* We may have created entries in the .rela.got, .rela.sdata, and
e7bab9df 1625 .rela.sdata2 sections. However, if we are not creating the
3b3753b8
MM		 1626 dynamic sections, we will not actually use these entries. Reset
1627 the size of .rela.got, et al, which will cause it to get
1628 stripped from the output file below. */
1629 static char *rela_sections[] = { ".rela.got", ".rela.sdata", ".rela.sdata", (char *)0 };
1630 char **p;
1631
1632 for (p = rela_sections; *p != (char *)0; p++)
1633 {
1634 s = bfd_get_section_by_name (dynobj, *p);
1635 if (s != NULL)
1636 s->_raw_size = 0;
1637 }
08556813
MM		 1638 }
1639
1640 /* The check_relocs and adjust_dynamic_symbol entry points have
1641 determined the sizes of the various dynamic sections. Allocate
1642 memory for them. */
3f7ca26b
MM		 1643 plt = false;
1644 relocs = false;
08556813 1645 reltext = false;
08556813
MM		 1646 for (s = dynobj->sections; s != NULL; s = s->next)
1647 {
1648 const char *name;
1649 boolean strip;
1650
1651 if ((s->flags & SEC_IN_MEMORY) == 0)
1652 continue;
1653
1654 /* It's OK to base decisions on the section name, because none
1655 of the dynobj section names depend upon the input files. */
1656 name = bfd_get_section_name (dynobj, s);
1657
1658 strip = false;
1659
3f7ca26b
MM		 1660 if (strcmp (name, ".plt") == 0)
1661 {
1662 if (s->_raw_size == 0)
1663 {
1664 /* Strip this section if we don't need it; see the
1665 comment below. */
1666 strip = true;
1667 }
1668 else
1669 {
1670 /* Remember whether there is a PLT. */
1671 plt = true;
1672 }
1673 }
1674 else if (strncmp (name, ".rela", 5) == 0)
08556813
MM		 1675 {
1676 if (s->_raw_size == 0)
1677 {
1678 /* If we don't need this section, strip it from the
3f7ca26b
MM		 1679 output file. This is mostly to handle .rela.bss and
1680 .rela.plt. We must create both sections in
1681 create_dynamic_sections, because they must be created
08556813
MM		 1682 before the linker maps input sections to output
1683 sections. The linker does that before
1684 adjust_dynamic_symbol is called, and it is that
1685 function which decides whether anything needs to go
1686 into these sections. */
1687 strip = true;
1688 }
1689 else
1690 {
1691 asection *target;
1692
3f7ca26b
MM		 1693 /* Remember whether there are any reloc sections other
1694 than .rel.plt. */
1695 if (strcmp (name, ".rela.plt") != 0)
1696 {
1697 relocs = true;
1698
1699 /* If this relocation section applies to a read only
1700 section, then we probably need a DT_TEXTREL
1701 entry. The entries in the .rel.plt section
1702 really apply to the .got section, which we
1703 created ourselves and so know is not readonly. */
1704 target = bfd_get_section_by_name (output_bfd, name + 4);
1705 if (target != NULL
1706 && (target->flags & SEC_READONLY) != 0)
1707 reltext = true;
1708 }
08556813
MM		 1709
1710 /* We use the reloc_count field as a counter if we need
1711 to copy relocs into the output file. */
1712 s->reloc_count = 0;
1713 }
1714 }
3f7ca26b
MM		 1715 else if (strcmp (name, ".got") != 0
1716 && strcmp (name, ".sdata") != 0
1717 && strcmp (name, ".sdata2") != 0)
08556813
MM		 1718 {
1719 /* It's not one of our sections, so don't allocate space. */
1720 continue;
1721 }
1722
1723 if (strip)
1724 {
1725 asection **spp;
1726
1727 for (spp = &s->output_section->owner->sections;
1728 *spp != s->output_section;
1729 spp = &(*spp)->next)
1730 ;
1731 *spp = s->output_section->next;
1732 --s->output_section->owner->section_count;
1733
1734 continue;
1735 }
1736
1737 /* Allocate memory for the section contents. */
eb82bc60 1738 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
08556813
MM		 1739 if (s->contents == NULL && s->_raw_size != 0)
1740 return false;
1741 }
1742
1743 if (elf_hash_table (info)->dynamic_sections_created)
1744 {
1745 /* Add some entries to the .dynamic section. We fill in the
1746 values later, in ppc_elf_finish_dynamic_sections, but we
1747 must add the entries now so that we get the correct size for
1748 the .dynamic section. The DT_DEBUG entry is filled in by the
1749 dynamic linker and used by the debugger. */
1750 if (! info->shared)
1751 {
1752 if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0))
1753 return false;
1754 }
1755
3f7ca26b 1756 if (plt)
08556813 1757 {
3f7ca26b
MM		 1758 if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0)
1759 || ! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0)
1760 || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_REL)
08556813
MM		 1761 || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0))
1762 return false;
1763 }
1764
3f7ca26b
MM		 1765 if (relocs)
1766 {
1767 if (! bfd_elf32_add_dynamic_entry (info, DT_RELA, 0)
1768 || ! bfd_elf32_add_dynamic_entry (info, DT_RELASZ, DT_RELA)
1769 || ! bfd_elf32_add_dynamic_entry (info, DT_RELENT,
1770 sizeof (Elf32_External_Rela)))
1771 return false;
1772 }
08556813
MM		 1773
1774 if (reltext)
1775 {
1776 if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0))
1777 return false;
1778 }
1779 }
1780
1781 /* If we are generating a shared library, we generate a section
1782 symbol for each output section. These are local symbols, which
1783 means that they must come first in the dynamic symbol table.
1784 That means we must increment the dynamic symbol index of every
1785 other dynamic symbol. */
1786 if (info->shared)
1787 {
1788 int c, i;
1789
1790 c = bfd_count_sections (output_bfd);
1791 elf_link_hash_traverse (elf_hash_table (info),
1792 ppc_elf_adjust_dynindx,
1793 (PTR) &c);
1794 elf_hash_table (info)->dynsymcount += c;
1795
1796 for (i = 1, s = output_bfd->sections; s != NULL; s = s->next, i++)
1797 {
1798 elf_section_data (s)->dynindx = i;
1799 /* These symbols will have no names, so we don't need to
1800 fiddle with dynstr_index. */
1801 }
1802 }
1803
1804 return true;
1805}
1806
1807\f
1808/* Look through the relocs for a section during the first phase, and
1809 allocate space in the global offset table or procedure linkage
1810 table. */
1811
1812static boolean
1813ppc_elf_check_relocs (abfd, info, sec, relocs)
1814 bfd *abfd;
1815 struct bfd_link_info *info;
1816 asection *sec;
1817 const Elf_Internal_Rela *relocs;
1818{
e25a7988 1819 boolean ret = true;
08556813
MM		 1820 bfd *dynobj;
1821 Elf_Internal_Shdr *symtab_hdr;
1822 struct elf_link_hash_entry **sym_hashes;
08556813
MM		 1823 const Elf_Internal_Rela *rel;
1824 const Elf_Internal_Rela *rel_end;
e7bab9df 1825 bfd_vma *local_got_offsets;
3b3753b8 1826 elf_linker_section_t *got;
3f7ca26b 1827 elf_linker_section_t *plt;
3b3753b8
MM		 1828 elf_linker_section_t *sdata;
1829 elf_linker_section_t *sdata2;
08556813
MM		 1830 asection *sreloc;
1831
1832 if (info->relocateable)
1833 return true;
1834
1835#ifdef DEBUG
3f7ca26b
MM		 1836 fprintf (stderr, "ppc_elf_check_relocs called for section %s in %s\n",
1837 bfd_get_section_name (abfd, sec),
1838 bfd_get_filename (abfd));
08556813
MM		 1839#endif
1840
3b3753b8
MM		 1841 /* Create the linker generated sections all the time so that the special
1842 symbols are created. */
1843 if ((got = elf_linker_section (abfd, LINKER_SECTION_GOT)) == NULL)
1844 {
1845 got = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_GOT);
1846 if (!got)
e25a7988 1847 ret = false;
3b3753b8
MM		 1848 }
1849
3f7ca26b
MM		 1850#if 0
1851 if ((plt = elf_linker_section (abfd, LINKER_SECTION_PLT)) == NULL)
1852 {
1853 plt = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_PLT);
1854 if (!plt)
e25a7988 1855 ret = false;
3f7ca26b
MM		 1856 }
1857#endif
1858
3b3753b8
MM		 1859 if ((sdata = elf_linker_section (abfd, LINKER_SECTION_SDATA)) == NULL)
1860 {
1861 sdata = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA);
1862 if (!sdata)
e25a7988 1863 ret = false;
3b3753b8
MM		 1864 }
1865
1866
1867 if ((sdata2 = elf_linker_section (abfd, LINKER_SECTION_SDATA2)) == NULL)
1868 {
1869 sdata2 = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA2);
1870 if (!sdata2)
e25a7988 1871 ret = false;
3b3753b8
MM		 1872 }
1873
08556813
MM		 1874 dynobj = elf_hash_table (info)->dynobj;
1875 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1876 sym_hashes = elf_sym_hashes (abfd);
e7bab9df 1877 local_got_offsets = elf_local_got_offsets (abfd);
08556813 1878
08556813
MM		 1879 sreloc = NULL;
1880
1881 rel_end = relocs + sec->reloc_count;
1882 for (rel = relocs; rel < rel_end; rel++)
1883 {
1884 unsigned long r_symndx;
1885 struct elf_link_hash_entry *h;
1886
1887 r_symndx = ELF32_R_SYM (rel->r_info);
1888 if (r_symndx < symtab_hdr->sh_info)
1889 h = NULL;
1890 else
1891 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1892
1893 switch (ELF32_R_TYPE (rel->r_info))
1894 {
3b3753b8 1895 /* GOT16 relocations */
08556813
MM		 1896 case R_PPC_GOT16:
1897 case R_PPC_GOT16_LO:
1898 case R_PPC_GOT16_HI:
1899 case R_PPC_GOT16_HA:
3b3753b8
MM		 1900 if (got->rel_section == NULL
1901 && (h != NULL || info->shared)
1902 && !_bfd_elf_make_linker_section_rela (dynobj, got, 2))
e25a7988
MM		 1903 {
1904 ret = false;
1905 break;
1906 }
1c3a295b 1907
3b3753b8 1908 if (!bfd_elf32_create_pointer_linker_section (abfd, info, got, h, rel))
e25a7988 1909 ret = false;
08556813 1910
3b3753b8 1911 break;
08556813 1912
3b3753b8
MM		 1913 /* Indirect .sdata relocation */
1914 case R_PPC_EMB_SDAI16:
e25a7988
MM		 1915 if (info->shared)
1916 {
1917 (*_bfd_error_handler) ("%s: relocation %s cannot be used when making a shared object",
1918 bfd_get_filename (abfd),
1919 "R_PPC_EMB_SDAI16");
1920 ret = false;
1921 break;
1922 }
1923
3b3753b8
MM		 1924 if (got->rel_section == NULL
1925 && (h != NULL || info->shared)
1926 && !_bfd_elf_make_linker_section_rela (dynobj, got, 2))
e25a7988
MM		 1927 {
1928 ret = false;
1929 break;
1930 }
08556813 1931
3b3753b8 1932 if (!bfd_elf32_create_pointer_linker_section (abfd, info, sdata, h, rel))
e25a7988 1933 ret = false;
08556813 1934
3b3753b8 1935 break;
08556813 1936
3b3753b8
MM		 1937 /* Indirect .sdata2 relocation */
1938 case R_PPC_EMB_SDA2I16:
e25a7988
MM		 1939 if (info->shared)
1940 {
1941 (*_bfd_error_handler) ("%s: relocation %s cannot be used when making a shared object",
1942 bfd_get_filename (abfd),
1943 "R_PPC_EMB_SDA2I16");
1944 ret = false;
1945 break;
1946 }
1947
3b3753b8
MM		 1948 if (got->rel_section == NULL
1949 && (h != NULL || info->shared)
1950 && !_bfd_elf_make_linker_section_rela (dynobj, got, 2))
1951 return false;
08556813 1952
3b3753b8
MM		 1953 if (!bfd_elf32_create_pointer_linker_section (abfd, info, sdata2, h, rel))
1954 return false;
08556813
MM		 1955
1956 break;
1957
e25a7988
MM		 1958 case R_PPC_SDAREL16:
1959 case R_PPC_EMB_SDA2REL:
1960 case R_PPC_EMB_SDA21:
1961 if (info->shared)
1962 {
1963 (*_bfd_error_handler) ("%s: relocation %s cannot be used when making a shared object",
1964 bfd_get_filename (abfd),
1965 ppc_elf_howto_table[(int)ELF32_R_TYPE (rel->r_info)]->name);
1966 ret = false;
1967 }
1968 break;
1969
08556813
MM		 1970 case R_PPC_PLT32:
1971 case R_PPC_PLTREL24:
1972 case R_PPC_PLT16_LO:
1973 case R_PPC_PLT16_HI:
1974 case R_PPC_PLT16_HA:
1975#ifdef DEBUG
1976 fprintf (stderr, "Reloc requires a PLT entry\n");
1977#endif
1978 /* This symbol requires a procedure linkage table entry. We
1979 actually build the entry in adjust_dynamic_symbol,
1980 because this might be a case of linking PIC code without
1981 linking in any dynamic objects, in which case we don't
1982 need to generate a procedure linkage table after all. */
1983
1984 if (h == NULL)
1985 {
1986 /* It does not make sense to have a procedure linkage
1987 table entry for a local symbol. */
1988 bfd_set_error (bfd_error_bad_value);
e25a7988
MM		 1989 ret = false;
1990 break;
08556813
MM		 1991 }
1992
1993 /* Make sure this symbol is output as a dynamic symbol. */
1994 if (h->dynindx == -1)
1995 {
1996 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
e25a7988
MM		 1997 {
1998 ret = false;
1999 break;
2000 }
08556813
MM		 2001 }
2002
2003 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
2004 break;
2005
e25a7988
MM		 2006 /* the following relocations don't need to propigate the relocation if
2007 linking a shared object since they are section relative. */
2008 case R_PPC_SECTOFF:
2009 case R_PPC_SECTOFF_LO:
2010 case R_PPC_SECTOFF_HI:
2011 case R_PPC_SECTOFF_HA:
2012 break;
2013
e7bab9df
MM		 2014 /* This refers only to functions defined in the shared library */
2015 case R_PPC_LOCAL24PC:
2016 break;
2017
e25a7988
MM		 2018 /* When creating a shared object, we must copy these
2019 relocs into the output file. We create a reloc
2020 section in dynobj and make room for the reloc. */
2021 case R_PPC_REL24:
08556813
MM		 2022 if (h != NULL
2023 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2024 break;
0293d5b0 2025 /* fall through */
e25a7988
MM		 2026
2027 case R_PPC_REL14:
2028 case R_PPC_REL14_BRTAKEN:
2029 case R_PPC_REL14_BRNTAKEN:
08556813
MM		 2030 if (h == NULL)
2031 break;
0293d5b0 2032 /* fall through */
e25a7988
MM		 2033
2034 default:
08556813
MM		 2035 if (info->shared
2036 && (sec->flags & SEC_ALLOC) != 0)
2037 {
e7bab9df
MM		 2038#ifdef DEBUG
2039 fprintf (stderr, "ppc_elf_check_relocs need to create relocation for %s\n",
2040 (h && h->root.root.string) ? h->root.root.string : "<unknown>");
2041#endif
08556813
MM		 2042 if (sreloc == NULL)
2043 {
2044 const char *name;
2045
2046 name = (bfd_elf_string_from_elf_section
2047 (abfd,
2048 elf_elfheader (abfd)->e_shstrndx,
2049 elf_section_data (sec)->rel_hdr.sh_name));
2050 if (name == NULL)
e25a7988
MM		 2051 {
2052 ret = false;
2053 break;
2054 }
08556813
MM		 2055
2056 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
2057 && strcmp (bfd_get_section_name (abfd, sec),
2058 name + 5) == 0);
2059
2060 sreloc = bfd_get_section_by_name (dynobj, name);
2061 if (sreloc == NULL)
2062 {
2063 sreloc = bfd_make_section (dynobj, name);
2064 if (sreloc == NULL
2065 || ! bfd_set_section_flags (dynobj, sreloc,
2066 (SEC_ALLOC
2067 | SEC_LOAD
2068 | SEC_HAS_CONTENTS
2069 | SEC_IN_MEMORY
2070 | SEC_READONLY))
2071 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
e25a7988
MM		 2072 {
2073 ret = false;
2074 break;
2075 }
08556813
MM		 2076 }
2077 }
2078
2079 sreloc->_raw_size += sizeof (Elf32_External_Rela);
2080 }
2081
2082 break;
08556813
MM		 2083 }
2084 }
2085
e25a7988 2086 return ret;
08556813
MM		 2087}
2088
9d621c7d
MM		 2089\f
2090/* Hook called by the linker routine which adds symbols from an object
2091 file. We use it to put .comm items in .sbss, and not .bss. */
2092
2093/*ARGSUSED*/
2094static boolean
2095ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
2096 bfd *abfd;
2097 struct bfd_link_info *info;
2098 const Elf_Internal_Sym *sym;
2099 const char **namep;
2100 flagword *flagsp;
2101 asection **secp;
2102 bfd_vma *valp;
2103{
0293d5b0 2104 if (sym->st_shndx == SHN_COMMON && !info->relocateable && sym->st_size <= bfd_get_gp_size (abfd))
9d621c7d 2105 {
eb82bc60 2106 /* Common symbols less than or equal to -G nn bytes are automatically
9d621c7d 2107 put into .sdata. */
3f7ca26b 2108 elf_linker_section_t *sdata = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA);
9d621c7d 2109 if (!sdata->bss_section)
3f7ca26b 2110 {
e7bab9df
MM		 2111 /* We don't go through bfd_make_section, because we don't
2112 want to attach this common section to DYNOBJ. The linker
2113 will move the symbols to the appropriate output section
2114 when it defines common symbols. */
2115 sdata->bss_section = ((asection *)
2116 bfd_zalloc (abfd, sizeof (asection)));
2117 if (sdata->bss_section == NULL)
2118 return false;
2119 sdata->bss_section->name = sdata->bss_name;
2120 sdata->bss_section->flags = SEC_IS_COMMON;
2121 sdata->bss_section->output_section = sdata->bss_section;
2122 sdata->bss_section->symbol =
2123 (asymbol *) bfd_zalloc (abfd, sizeof (asymbol));
2124 sdata->bss_section->symbol_ptr_ptr =
2125 (asymbol **) bfd_zalloc (abfd, sizeof (asymbol *));
2126 if (sdata->bss_section->symbol == NULL
2127 || sdata->bss_section->symbol_ptr_ptr == NULL)
2128 return false;
2129 sdata->bss_section->symbol->name = sdata->bss_name;
2130 sdata->bss_section->symbol->flags = BSF_SECTION_SYM;
2131 sdata->bss_section->symbol->section = sdata->bss_section;
2132 *sdata->bss_section->symbol_ptr_ptr = sdata->bss_section->symbol;
3f7ca26b
MM		 2133 }
2134
9d621c7d 2135 *secp = sdata->bss_section;
9d621c7d
MM		 2136 *valp = sym->st_size;
2137 }
2138
2139 return true;
2140}
2141
08556813
MM		 2142\f
2143/* Finish up dynamic symbol handling. We set the contents of various
2144 dynamic sections here. */
2145
2146static boolean
2147ppc_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
2148 bfd *output_bfd;
2149 struct bfd_link_info *info;
2150 struct elf_link_hash_entry *h;
2151 Elf_Internal_Sym *sym;
2152{
2153 bfd *dynobj;
2154
2155#ifdef DEBUG
3f7ca26b 2156 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s", h->root.root.string);
08556813
MM		 2157#endif
2158
2159 dynobj = elf_hash_table (info)->dynobj;
3b3753b8 2160 BFD_ASSERT (dynobj != NULL);
08556813
MM		 2161
2162 if (h->plt_offset != (bfd_vma) -1)
2163 {
2164 asection *splt;
2165 asection *srela;
2166 Elf_Internal_Rela rela;
2167
3f7ca26b
MM		 2168#ifdef DEBUG
2169 fprintf (stderr, ", plt_offset = %d", h->plt_offset);
2170#endif
2171
08556813
MM		 2172 /* This symbol has an entry in the procedure linkage table. Set
2173 it up. */
2174
2175 BFD_ASSERT (h->dynindx != -1);
2176
2177 splt = bfd_get_section_by_name (dynobj, ".plt");
2178 srela = bfd_get_section_by_name (dynobj, ".rela.plt");
2179 BFD_ASSERT (splt != NULL && srela != NULL);
2180
3f7ca26b
MM		 2181 /* We don't need to fill in the .plt. The solaris dynamic linker will
2182 fill it in. */
08556813
MM		 2183
2184 /* Fill in the entry in the .rela.plt section. */
2185 rela.r_offset = (splt->output_section->vma
2186 + splt->output_offset
2187 + h->plt_offset);
3f7ca26b 2188 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
08556813
MM		 2189 rela.r_addend = 0;
2190 bfd_elf32_swap_reloca_out (output_bfd, &rela,
2191 ((Elf32_External_Rela *) srela->contents
3f7ca26b 2192 + ((h->plt_offset - PLT_INITIAL_ENTRY_SIZE) / 8)));
08556813
MM		 2193
2194 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
2195 {
2196 /* Mark the symbol as undefined, rather than as defined in
2197 the .plt section. Leave the value alone. */
2198 sym->st_shndx = SHN_UNDEF;
2199 }
2200 }
2201
08556813
MM		 2202 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
2203 {
2204 asection *s;
2205 Elf_Internal_Rela rela;
2206
2207 /* This symbols needs a copy reloc. Set it up. */
2208
3f7ca26b
MM		 2209#ifdef DEBUG
2210 fprintf (stderr, ", copy");
2211#endif
2212
08556813
MM		 2213 BFD_ASSERT (h->dynindx != -1);
2214
2215 s = bfd_get_section_by_name (h->root.u.def.section->owner,
2216 ".rela.bss");
2217 BFD_ASSERT (s != NULL);
2218
2219 rela.r_offset = (h->root.u.def.value
2220 + h->root.u.def.section->output_section->vma
2221 + h->root.u.def.section->output_offset);
2222 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
2223 rela.r_addend = 0;
2224 bfd_elf32_swap_reloca_out (output_bfd, &rela,
2225 ((Elf32_External_Rela *) s->contents
2226 + s->reloc_count));
2227 ++s->reloc_count;
2228 }
2229
3f7ca26b
MM		 2230#ifdef DEBUG
2231 fprintf (stderr, "\n");
2232#endif
2233
08556813
MM		 2234 /* Mark some specially defined symbols as absolute. */
2235 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
2236 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
2237 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
2238 sym->st_shndx = SHN_ABS;
2239
2240 return true;
2241}
2242
2243\f
2244/* Finish up the dynamic sections. */
2245
2246static boolean
2247ppc_elf_finish_dynamic_sections (output_bfd, info)
2248 bfd *output_bfd;
2249 struct bfd_link_info *info;
2250{
08556813 2251 asection *sdyn;
3b3753b8
MM		 2252 bfd *dynobj = elf_hash_table (info)->dynobj;
2253 elf_linker_section_t *got = elf_linker_section (dynobj, LINKER_SECTION_GOT);
08556813
MM		 2254
2255#ifdef DEBUG
2256 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
2257#endif
2258
08556813
MM		 2259 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
2260
2261 if (elf_hash_table (info)->dynamic_sections_created)
2262 {
2263 asection *splt;
2264 Elf32_External_Dyn *dyncon, *dynconend;
2265
2266 splt = bfd_get_section_by_name (dynobj, ".plt");
2267 BFD_ASSERT (splt != NULL && sdyn != NULL);
2268
2269 dyncon = (Elf32_External_Dyn *) sdyn->contents;
2270 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
2271 for (; dyncon < dynconend; dyncon++)
2272 {
2273 Elf_Internal_Dyn dyn;
2274 const char *name;
2275 boolean size;
2276
2277 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
2278
2279 switch (dyn.d_tag)
2280 {
3f7ca26b
MM		 2281 case DT_PLTGOT: name = ".plt"; size = false; break;
2282 case DT_PLTRELSZ: name = ".rela.plt"; size = true; break;
08556813 2283 case DT_JMPREL: name = ".rela.plt"; size = false; break;
3f7ca26b 2284 default: name = NULL; size = false; break;
08556813
MM		 2285 }
2286
2287 if (name != NULL)
2288 {
2289 asection *s;
2290
2291 s = bfd_get_section_by_name (output_bfd, name);
2292 if (s == NULL)
2293 dyn.d_un.d_val = 0;
2294 else
2295 {
2296 if (! size)
2297 dyn.d_un.d_ptr = s->vma;
2298 else
2299 {
2300 if (s->_cooked_size != 0)
2301 dyn.d_un.d_val = s->_cooked_size;
2302 else
2303 dyn.d_un.d_val = s->_raw_size;
2304 }
2305 }
2306 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2307 }
2308 }
08556813
MM		 2309 }
2310
3b3753b8
MM		 2311 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
2312 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
2313 if (got)
08556813 2314 {
3b3753b8
MM		 2315 unsigned char *contents = got->section->contents + got->hole_offset;
2316 bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, contents);
2317
08556813 2318 if (sdyn == NULL)
3b3753b8 2319 bfd_put_32 (output_bfd, (bfd_vma) 0, contents+4);
08556813
MM		 2320 else
2321 bfd_put_32 (output_bfd,
2322 sdyn->output_section->vma + sdyn->output_offset,
3b3753b8 2323 contents+4);
08556813 2324
3b3753b8
MM		 2325 elf_section_data (got->section->output_section)->this_hdr.sh_entsize = 4;
2326 }
08556813
MM		 2327
2328 if (info->shared)
2329 {
2330 asection *sdynsym;
2331 asection *s;
2332 Elf_Internal_Sym sym;
2333
2334 /* Set up the section symbols for the output sections. */
2335
2336 sdynsym = bfd_get_section_by_name (dynobj, ".dynsym");
2337 BFD_ASSERT (sdynsym != NULL);
2338
2339 sym.st_size = 0;
2340 sym.st_name = 0;
2341 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
2342 sym.st_other = 0;
2343
2344 for (s = output_bfd->sections; s != NULL; s = s->next)
2345 {
2346 int indx;
2347
2348 sym.st_value = s->vma;
2349
2350 indx = elf_section_data (s)->this_idx;
2351 BFD_ASSERT (indx > 0);
2352 sym.st_shndx = indx;
2353
2354 bfd_elf32_swap_symbol_out (output_bfd, &sym,
2355 (PTR) (((Elf32_External_Sym *)
2356 sdynsym->contents)
2357 + elf_section_data (s)->dynindx));
2358 }
2359
2360 /* Set the sh_info field of the output .dynsym section to the
2361 index of the first global symbol. */
2362 elf_section_data (sdynsym->output_section)->this_hdr.sh_info =
2363 bfd_count_sections (output_bfd) + 1;
2364 }
2365
2366 return true;
2367}
2368
ede4eed4
KR		 2369\f
2370/* The RELOCATE_SECTION function is called by the ELF backend linker
2371 to handle the relocations for a section.
bcbe2c71 2372
ede4eed4
KR		 2373 The relocs are always passed as Rela structures; if the section
2374 actually uses Rel structures, the r_addend field will always be
2375 zero.
bcbe2c71 2376
ede4eed4
KR		 2377 This function is responsible for adjust the section contents as
2378 necessary, and (if using Rela relocs and generating a
2379 relocateable output file) adjusting the reloc addend as
2380 necessary.
bcbe2c71 2381
ede4eed4
KR		 2382 This function does not have to worry about setting the reloc
2383 address or the reloc symbol index.
2384
2385 LOCAL_SYMS is a pointer to the swapped in local symbols.
2386
2387 LOCAL_SECTIONS is an array giving the section in the input file
2388 corresponding to the st_shndx field of each local symbol.
2389
2390 The global hash table entry for the global symbols can be found
2391 via elf_sym_hashes (input_bfd).
2392
2393 When generating relocateable output, this function must handle
2394 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2395 going to be the section symbol corresponding to the output
2396 section, which means that the addend must be adjusted
2397 accordingly. */
2398
2399static boolean
2400ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section,
2401 contents, relocs, local_syms, local_sections)
2402 bfd *output_bfd;
2403 struct bfd_link_info *info;
2404 bfd *input_bfd;
2405 asection *input_section;
2406 bfd_byte *contents;
2407 Elf_Internal_Rela *relocs;
2408 Elf_Internal_Sym *local_syms;
2409 asection **local_sections;
bcbe2c71 2410{
08556813 2411 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
ede4eed4 2412 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
08556813 2413 bfd *dynobj = elf_hash_table (info)->dynobj;
3f7ca26b
MM		 2414 elf_linker_section_t *got = (dynobj) ? elf_linker_section (dynobj, LINKER_SECTION_GOT) : NULL;
2415 elf_linker_section_t *sdata = (dynobj) ? elf_linker_section (dynobj, LINKER_SECTION_SDATA) : NULL;
2416 elf_linker_section_t *sdata2 = (dynobj) ? elf_linker_section (dynobj, LINKER_SECTION_SDATA2) : NULL;
07a159db
MM		 2417 Elf_Internal_Rela *rel = relocs;
2418 Elf_Internal_Rela *relend = relocs + input_section->reloc_count;
e7bab9df 2419 asection *sreloc = NULL;
07a159db 2420 boolean ret = true;
08556813 2421 long insn;
ede4eed4
KR		 2422
2423#ifdef DEBUG
2424 fprintf (stderr, "ppc_elf_relocate_section called for %s section %s, %ld relocations%s\n",
2425 bfd_get_filename (input_bfd),
2426 bfd_section_name(input_bfd, input_section),
2427 (long)input_section->reloc_count,
2428 (info->relocateable) ? " (relocatable)" : "");
2429#endif
2430
2431 if (!ppc_elf_howto_table[ R_PPC_ADDR32 ]) /* Initialize howto table if needed */
2432 ppc_elf_howto_init ();
bcbe2c71 2433
ede4eed4 2434 for (; rel < relend; rel++)
bcbe2c71 2435 {
07a159db
MM		 2436 enum ppc_reloc_type r_type = (enum ppc_reloc_type)ELF32_R_TYPE (rel->r_info);
2437 bfd_vma offset = rel->r_offset;
2438 bfd_vma addend = rel->r_addend;
2439 bfd_reloc_status_type r = bfd_reloc_other;
2440 Elf_Internal_Sym *sym = (Elf_Internal_Sym *)0;
2441 asection *sec = (asection *)0;
2442 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *)0;
c1e65e24 2443 const char *sym_name = (const char *)0;
ede4eed4
KR		 2444 reloc_howto_type *howto;
2445 unsigned long r_symndx;
2446 bfd_vma relocation;
2447
2448 /* Unknown relocation handling */
2449 if ((unsigned)r_type >= (unsigned)R_PPC_max || !ppc_elf_howto_table[(int)r_type])
2450 {
1c3a295b
MM		 2451 (*_bfd_error_handler) ("%s: unknown relocation type %d",
2452 bfd_get_filename (input_bfd),
2453 (int)r_type);
ede4eed4
KR		 2454
2455 bfd_set_error (bfd_error_bad_value);
2456 ret = false;
2457 continue;
2458 }
2459
2460 howto = ppc_elf_howto_table[(int)r_type];
2461 r_symndx = ELF32_R_SYM (rel->r_info);
2462
2463 if (info->relocateable)
2464 {
2465 /* This is a relocateable link. We don't have to change
2466 anything, unless the reloc is against a section symbol,
2467 in which case we have to adjust according to where the
2468 section symbol winds up in the output section. */
2469 if (r_symndx < symtab_hdr->sh_info)
2470 {
2471 sym = local_syms + r_symndx;
2472 if ((unsigned)ELF_ST_TYPE (sym->st_info) == STT_SECTION)
2473 {
2474 sec = local_sections[r_symndx];
2475 addend = rel->r_addend += sec->output_offset + sym->st_value;
2476 }
2477 }
2478
2479#ifdef DEBUG
2480 fprintf (stderr, "\ttype = %s (%d), symbol index = %ld, offset = %ld, addend = %ld\n",
2481 howto->name,
2482 (int)r_type,
2483 r_symndx,
2484 (long)offset,
2485 (long)addend);
2486#endif
2487 continue;
2488 }
2489
2490 /* This is a final link. */
ede4eed4
KR		 2491 if (r_symndx < symtab_hdr->sh_info)
2492 {
2493 sym = local_syms + r_symndx;
2494 sec = local_sections[r_symndx];
c1e65e24
MM		 2495 sym_name = "<local symbol>";
2496
ede4eed4
KR		 2497 relocation = (sec->output_section->vma
2498 + sec->output_offset
2499 + sym->st_value);
2500 }
2501 else
2502 {
2503 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
cf5138e3
ILT		 2504 while (h->root.type == bfd_link_hash_indirect
2505 || h->root.type == bfd_link_hash_warning)
2506 h = (struct elf_link_hash_entry *) h->root.u.i.link;
c1e65e24 2507 sym_name = h->root.root.string;
ede4eed4
KR		 2508 if (h->root.type == bfd_link_hash_defined
2509 || h->root.type == bfd_link_hash_defweak)
2510 {
2511 sec = h->root.u.def.section;
e7bab9df
MM		 2512 if ((r_type == R_PPC_PLT32
2513 && h->plt_offset != (bfd_vma) -1)
2514 || ((r_type == R_PPC_GOT16
2515 || r_type == R_PPC_GOT16_LO
2516 || r_type == R_PPC_GOT16_HI
2517 || r_type == R_PPC_GOT16_HA)
2518 && elf_hash_table (info)->dynamic_sections_created
2519 && (! info->shared
2520 || ! info->symbolic
2521 || (h->elf_link_hash_flags
2522 & ELF_LINK_HASH_DEF_REGULAR) == 0))
2523 || (info->shared
2524 && (! info->symbolic
2525 || (h->elf_link_hash_flags
2526 & ELF_LINK_HASH_DEF_REGULAR) == 0)
2527 && (input_section->flags & SEC_ALLOC) != 0
2528 && (r_type == R_PPC_ADDR32
2529 || r_type == R_PPC_ADDR24
2530 || r_type == R_PPC_ADDR16
2531 || r_type == R_PPC_ADDR16_LO
2532 || r_type == R_PPC_ADDR16_HI
2533 || r_type == R_PPC_ADDR16_HA
2534 || r_type == R_PPC_ADDR14
2535 || r_type == R_PPC_ADDR14_BRTAKEN
2536 || r_type == R_PPC_ADDR14_BRNTAKEN
2537 || r_type == R_PPC_PLTREL24
2538 || r_type == R_PPC_COPY
2539 || r_type == R_PPC_GLOB_DAT
2540 || r_type == R_PPC_JMP_SLOT
2541 || r_type == R_PPC_UADDR32
2542 || r_type == R_PPC_UADDR16
2543 || r_type == R_PPC_REL32
2544 || r_type == R_PPC_SDAREL16
2545 || r_type == R_PPC_EMB_NADDR32
2546 || r_type == R_PPC_EMB_NADDR16
2547 || r_type == R_PPC_EMB_NADDR16_LO
2548 || r_type == R_PPC_EMB_NADDR16_HI
2549 || r_type == R_PPC_EMB_NADDR16_HA
2550 || r_type == R_PPC_EMB_SDAI16
2551 || r_type == R_PPC_EMB_SDA2I16
2552 || r_type == R_PPC_EMB_SDA2REL
2553 || r_type == R_PPC_EMB_SDA21
2554 || r_type == R_PPC_EMB_MRKREF
2555 || r_type == R_PPC_EMB_BIT_FLD
2556 || r_type == R_PPC_EMB_RELSDA
2557 || ((r_type == R_PPC_REL24
2558 || r_type == R_PPC_REL14
2559 || r_type == R_PPC_REL14_BRTAKEN
2560 || r_type == R_PPC_REL14_BRNTAKEN
2561 || r_type == R_PPC_RELATIVE)
2562 && strcmp (h->root.root.string,
2563 "_GLOBAL_OFFSET_TABLE_") != 0))))
3f7ca26b 2564 {
e7bab9df
MM		 2565 /* In these cases, we don't need the relocation
2566 value. We check specially because in some
2567 obscure cases sec->output_section will be NULL. */
3f7ca26b
MM		 2568 relocation = 0;
2569 }
2570 else
2571 relocation = (h->root.u.def.value
2572 + sec->output_section->vma
2573 + sec->output_offset);
ede4eed4
KR		 2574 }
2575 else if (h->root.type == bfd_link_hash_undefweak)
2576 relocation = 0;
2577 else if (info->shared)
2578 relocation = 0;
2579 else
2580 {
2581 (*info->callbacks->undefined_symbol)(info,
2582 h->root.root.string,
2583 input_bfd,
2584 input_section,
2585 rel->r_offset);
2586 ret = false;
2587 continue;
2588 }
2589 }
2590
2591 switch ((int)r_type)
2592 {
2593 default:
c1e65e24 2594 (*_bfd_error_handler) ("%s: unknown relocation type %d for symbol %s",
1c3a295b 2595 bfd_get_filename (input_bfd),
c1e65e24 2596 (int)r_type, sym_name);
1c3a295b
MM		 2597
2598 bfd_set_error (bfd_error_bad_value);
2599 ret = false;
2600 continue;
2601
3b3753b8 2602 /* relocations that need no special processing */
e7bab9df
MM		 2603 case (int)R_PPC_LOCAL24PC:
2604 break;
2605
2606 case (int)R_PPC_REL24:
2607 case (int)R_PPC_REL14:
2608 if (h != NULL
2609 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2610 break;
2611 /* fall through */
2612
2613 /* Relocations that need to be propigated if this is a shared object */
3b3753b8
MM		 2614 case (int)R_PPC_NONE:
2615 case (int)R_PPC_ADDR32:
2616 case (int)R_PPC_ADDR24:
2617 case (int)R_PPC_ADDR16:
2618 case (int)R_PPC_ADDR16_LO:
2619 case (int)R_PPC_ADDR16_HI:
2620 case (int)R_PPC_ADDR14:
3b3753b8
MM		 2621 case (int)R_PPC_UADDR32:
2622 case (int)R_PPC_UADDR16:
2623 case (int)R_PPC_REL32:
e7bab9df
MM		 2624 case (int)R_PPC_PLTREL24:
2625 if (info->shared
2626 && (input_section->flags & SEC_ALLOC) != 0)
2627 {
2628 Elf_Internal_Rela outrel;
2629
2630#ifdef DEBUG
2631 fprintf (stderr, "ppc_elf_relocate_section need to create relocation for %s\n",
2632 (h && h->root.root.string) ? h->root.root.string : "<unknown>");
2633#endif
2634
2635 /* When generating a shared object, these relocations
2636 are copied into the output file to be resolved at run
2637 time. */
2638
2639 if (sreloc == NULL)
2640 {
2641 const char *name;
2642
2643 name = (bfd_elf_string_from_elf_section
2644 (input_bfd,
2645 elf_elfheader (input_bfd)->e_shstrndx,
2646 elf_section_data (input_section)->rel_hdr.sh_name));
2647 if (name == NULL)
2648 return false;
2649
2650 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
2651 && strcmp (bfd_get_section_name (input_bfd,
2652 input_section),
2653 name + 5) == 0);
2654
2655 sreloc = bfd_get_section_by_name (dynobj, name);
2656 BFD_ASSERT (sreloc != NULL);
2657 }
2658
2659 outrel.r_offset = (rel->r_offset
2660 + input_section->output_section->vma
2661 + input_section->output_offset);
2662 if (h != NULL
2663 && (! info->symbolic
2664 || (h->elf_link_hash_flags
2665 & ELF_LINK_HASH_DEF_REGULAR) == 0))
2666 {
2667 BFD_ASSERT (h->dynindx != -1);
2668 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2669 outrel.r_addend = rel->r_addend;
2670 }
2671 else
2672 {
2673 if (r_type == R_PPC_ADDR32)
2674 {
2675 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
2676 outrel.r_addend = relocation + rel->r_addend;
2677 }
2678 else
2679 {
2680 long indx;
2681
2682 if (h == NULL)
2683 sec = local_sections[r_symndx];
2684 else
2685 {
2686 BFD_ASSERT (h->root.type == bfd_link_hash_defined
2687 || (h->root.type
2688 == bfd_link_hash_defweak));
2689 sec = h->root.u.def.section;
2690 }
2691 if (sec != NULL && bfd_is_abs_section (sec))
2692 indx = 0;
2693 else if (sec == NULL || sec->owner == NULL)
2694 {
2695 bfd_set_error (bfd_error_bad_value);
2696 return false;
2697 }
2698 else
2699 {
2700 asection *osec;
2701
2702 osec = sec->output_section;
2703 indx = elf_section_data (osec)->dynindx;
2704 if (indx == 0)
2705 abort ();
2706 }
2707
2708 outrel.r_info = ELF32_R_INFO (indx, r_type);
2709 outrel.r_addend = relocation + rel->r_addend;
2710 }
2711 }
2712
2713 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
2714 (((Elf32_External_Rela *)
2715 sreloc->contents)
2716 + sreloc->reloc_count));
2717 ++sreloc->reloc_count;
2718
2719 /* This reloc will be computed at runtime, so there's no
2720 need to do anything now. */
2721 continue;
2722 }
ede4eed4
KR		 2723 break;
2724
3b3753b8
MM		 2725 /* branch taken prediction relocations */
2726 case (int)R_PPC_ADDR14_BRTAKEN:
08556813 2727 case (int)R_PPC_REL14_BRTAKEN:
07a159db
MM		 2728 insn = bfd_get_32 (output_bfd, contents + offset);
2729 if ((relocation - offset) & 0x8000)
2730 insn &= ~BRANCH_PREDICT_BIT;
2731 else
2732 insn |= BRANCH_PREDICT_BIT;
2733 bfd_put_32 (output_bfd, insn, contents + offset);
2734 break;
2735
3b3753b8
MM		 2736 /* branch not taken predicition relocations */
2737 case (int)R_PPC_ADDR14_BRNTAKEN:
08556813 2738 case (int)R_PPC_REL14_BRNTAKEN:
08556813 2739 insn = bfd_get_32 (output_bfd, contents + offset);
07a159db
MM		 2740 if ((relocation - offset) & 0x8000)
2741 insn |= BRANCH_PREDICT_BIT;
2742 else
2743 insn &= ~BRANCH_PREDICT_BIT;
08556813
MM		 2744 bfd_put_32 (output_bfd, insn, contents + offset);
2745 break;
2746
3b3753b8
MM		 2747 /* GOT16 relocations */
2748 case (int)R_PPC_GOT16:
ede4eed4
KR		 2749 case (int)R_PPC_GOT16_LO:
2750 case (int)R_PPC_GOT16_HI:
1c3a295b 2751 case (int)R_PPC_GOT16_HA:
3b3753b8
MM		 2752 relocation = bfd_elf32_finish_pointer_linker_section (output_bfd, input_bfd, info,
2753 got, h, relocation, rel,
2754 R_PPC_RELATIVE);
2755 break;
07a159db 2756
3b3753b8
MM		 2757 /* Indirect .sdata relocation */
2758 case (int)R_PPC_EMB_SDAI16:
2759 BFD_ASSERT (sdata != NULL);
2760 relocation = bfd_elf32_finish_pointer_linker_section (output_bfd, input_bfd, info,
2761 sdata, h, relocation, rel,
2762 R_PPC_RELATIVE);
2763 break;
07a159db 2764
3b3753b8
MM		 2765 /* Indirect .sdata2 relocation */
2766 case (int)R_PPC_EMB_SDA2I16:
2767 BFD_ASSERT (sdata2 != NULL);
2768 relocation = bfd_elf32_finish_pointer_linker_section (output_bfd, input_bfd, info,
2769 sdata2, h, relocation, rel,
2770 R_PPC_RELATIVE);
ede4eed4
KR		 2771 break;
2772
07a159db
MM		 2773 /* Handle the TOC16 reloc. We want to use the offset within the .got
2774 section, not the actual VMA. This is appropriate when generating
2775 an embedded ELF object, for which the .got section acts like the
2776 AIX .toc section. */
08556813
MM		 2777 case (int)R_PPC_TOC16: /* phony GOT16 relocations */
2778 BFD_ASSERT (sec != (asection *)0);
07a159db
MM		 2779 BFD_ASSERT (bfd_is_und_section (sec)
2780 || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
bd2d10c0 2781 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0)
07a159db 2782
eb82bc60 2783 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
08556813
MM		 2784 break;
2785
3b3753b8
MM		 2786 /* arithmetic adjust relocations */
2787 case (int)R_PPC_ADDR16_HA:
ede4eed4 2788 BFD_ASSERT (sec != (asection *)0);
07a159db 2789 addend += ((relocation + addend) & 0x8000) << 1;
ede4eed4 2790 break;
1c3a295b 2791
3b3753b8
MM		 2792 /* relocate against _SDA_BASE_ */
2793 case (int)R_PPC_SDAREL16:
bd2d10c0
MM		 2794 BFD_ASSERT (sec != (asection *)0);
2795 if (strcmp (bfd_get_section_name (abfd, sec), ".sdata") != 0
2796 && strcmp (bfd_get_section_name (abfd, sec), ".sbss") != 0)
2797 {
c1e65e24 2798 (*_bfd_error_handler) ("%s: The target (%s) of a %s relocation is in the wrong section (%s)",
bd2d10c0 2799 bfd_get_filename (input_bfd),
c1e65e24 2800 sym_name,
3b3753b8 2801 ppc_elf_howto_table[ (int)r_type ]->name,
bd2d10c0
MM		 2802 bfd_get_section_name (abfd, sec));
2803
2804 bfd_set_error (bfd_error_bad_value);
2805 ret = false;
2806 continue;
2807 }
9d621c7d 2808 addend -= (sdata->sym_hash->root.u.def.value
eb82bc60
MM		 2809 + sdata->sym_hash->root.u.def.section->output_section->vma
2810 + sdata->sym_hash->root.u.def.section->output_offset);
3b3753b8 2811 break;
bd2d10c0 2812
05f927dd 2813
3b3753b8
MM		 2814 /* relocate against _SDA2_BASE_ */
2815 case (int)R_PPC_EMB_SDA2REL:
bd2d10c0
MM		 2816 BFD_ASSERT (sec != (asection *)0);
2817 if (strcmp (bfd_get_section_name (abfd, sec), ".sdata2") != 0
2818 && strcmp (bfd_get_section_name (abfd, sec), ".sbss2") != 0)
2819 {
c1e65e24 2820 (*_bfd_error_handler) ("%s: The target (%s) of a %s relocation is in the wrong section (%s)",
bd2d10c0 2821 bfd_get_filename (input_bfd),
c1e65e24 2822 sym_name,
3b3753b8 2823 ppc_elf_howto_table[ (int)r_type ]->name,
bd2d10c0
MM		 2824 bfd_get_section_name (abfd, sec));
2825
2826 bfd_set_error (bfd_error_bad_value);
2827 ret = false;
2828 continue;
2829 }
9d621c7d 2830 addend -= (sdata2->sym_hash->root.u.def.value
eb82bc60
MM		 2831 + sdata2->sym_hash->root.u.def.section->output_section->vma
2832 + sdata2->sym_hash->root.u.def.section->output_offset);
3b3753b8 2833 break;
bd2d10c0
MM		 2834
2835
3b3753b8
MM		 2836 /* relocate against either _SDA_BASE_, _SDA2_BASE_, or 0 */
2837 case (int)R_PPC_EMB_SDA21:
2838 case (int)R_PPC_EMB_RELSDA:
2839 {
2840 const char *name = bfd_get_section_name (abfd, sec);
2841 int reg;
2842
2843 BFD_ASSERT (sec != (asection *)0);
2844 if (strcmp (name, ".sdata") == 0 || strcmp (name, ".sbss") == 0)
2845 {
2846 reg = 13;
9d621c7d 2847 addend -= (sdata->sym_hash->root.u.def.value
eb82bc60
MM		 2848 + sdata->sym_hash->root.u.def.section->output_section->vma
2849 + sdata->sym_hash->root.u.def.section->output_offset);
3b3753b8
MM		 2850 }
2851
2852 else if (strcmp (name, ".sdata2") == 0 || strcmp (name, ".sbss2") == 0)
2853 {
2854 reg = 2;
9d621c7d 2855 addend -= (sdata2->sym_hash->root.u.def.value
eb82bc60
MM		 2856 + sdata2->sym_hash->root.u.def.section->output_section->vma
2857 + sdata2->sym_hash->root.u.def.section->output_offset);
3b3753b8
MM		 2858 }
2859
2860 else if (strcmp (name, ".PPC.EMB.sdata0") == 0 || strcmp (name, ".PPC.EMB.sbss0") == 0)
2861 {
2862 reg = 0;
2863 }
2864
2865 else
2866 {
c1e65e24 2867 (*_bfd_error_handler) ("%s: The target (%s) of a %s relocation is in the wrong section (%s)",
3b3753b8 2868 bfd_get_filename (input_bfd),
c1e65e24 2869 sym_name,
3b3753b8
MM		 2870 ppc_elf_howto_table[ (int)r_type ]->name,
2871 bfd_get_section_name (abfd, sec));
2872
2873 bfd_set_error (bfd_error_bad_value);
2874 ret = false;
2875 continue;
2876 }
d8fd85ad
MM		 2877
2878 if (r_type == R_PPC_EMB_SDA21)
2879 { /* fill in register field */
cf5138e3 2880 insn = bfd_get_32 (output_bfd, contents + offset);
d8fd85ad 2881 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
cf5138e3 2882 bfd_put_32 (output_bfd, insn, contents + offset);
d8fd85ad 2883 }
3b3753b8 2884 }
d8fd85ad 2885 break;
3b3753b8 2886
eb82bc60
MM		 2887 /* Relocate against the beginning of the section */
2888 case (int)R_PPC_SECTOFF:
2889 case (int)R_PPC_SECTOFF_LO:
2890 case (int)R_PPC_SECTOFF_HI:
2891 BFD_ASSERT (sec != (asection *)0);
2892 addend -= sec->output_section->vma;
2893 break;
2894
2895 case (int)R_PPC_SECTOFF_HA:
2896 BFD_ASSERT (sec != (asection *)0);
2897 addend -= sec->output_section->vma;
2898 addend += ((relocation + addend) & 0x8000) << 1;
2899 break;
2900
2901 /* Negative relocations */
2902 case (int)R_PPC_EMB_NADDR32:
2903 case (int)R_PPC_EMB_NADDR16:
2904 case (int)R_PPC_EMB_NADDR16_LO:
2905 case (int)R_PPC_EMB_NADDR16_HI:
2906 addend -= 2*relocation;
2907 break;
2908
2909 case (int)R_PPC_EMB_NADDR16_HA:
2910 addend -= 2*relocation;
2911 addend += ((relocation + addend) & 0x8000) << 1;
2912 break;
2913
2914 /* NOP relocation that prevents garbage collecting linkers from omitting a
2915 reference. */
2916 case (int)R_PPC_EMB_MRKREF:
2917 continue;
2918
3b3753b8
MM		 2919 case (int)R_PPC_COPY:
2920 case (int)R_PPC_GLOB_DAT:
2921 case (int)R_PPC_JMP_SLOT:
2922 case (int)R_PPC_RELATIVE:
3b3753b8
MM		 2923 case (int)R_PPC_PLT32:
2924 case (int)R_PPC_PLTREL32:
2925 case (int)R_PPC_PLT16_LO:
2926 case (int)R_PPC_PLT16_HI:
2927 case (int)R_PPC_PLT16_HA:
3b3753b8
MM		 2928 case (int)R_PPC_EMB_RELSEC16:
2929 case (int)R_PPC_EMB_RELST_LO:
2930 case (int)R_PPC_EMB_RELST_HI:
2931 case (int)R_PPC_EMB_RELST_HA:
2932 case (int)R_PPC_EMB_BIT_FLD:
c1e65e24 2933 (*_bfd_error_handler) ("%s: Relocation %s is not yet supported for symbol %s.",
1c3a295b 2934 bfd_get_filename (input_bfd),
c1e65e24
MM		 2935 ppc_elf_howto_table[ (int)r_type ]->name,
2936 sym_name);
1c3a295b 2937
3b3753b8 2938 bfd_set_error (bfd_error_invalid_operation);
1c3a295b
MM		 2939 ret = false;
2940 continue;
ede4eed4
KR		 2941 }
2942
2943
2944#ifdef DEBUG
c1e65e24 2945 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, offset = %ld, addend = %ld\n",
ede4eed4
KR		 2946 howto->name,
2947 (int)r_type,
c1e65e24 2948 sym_name,
ede4eed4
KR		 2949 r_symndx,
2950 (long)offset,
2951 (long)addend);
2952#endif
2953
2954 r = _bfd_final_link_relocate (howto,
2955 input_bfd,
2956 input_section,
2957 contents,
2958 offset,
2959 relocation,
2960 addend);
2961
2962 if (r != bfd_reloc_ok)
2963 {
2964 ret = false;
2965 switch (r)
2966 {
2967 default:
2968 break;
2969
2970 case bfd_reloc_overflow:
2971 {
2972 const char *name;
2973
2974 if (h != NULL)
2975 name = h->root.root.string;
2976 else
2977 {
2978 name = bfd_elf_string_from_elf_section (input_bfd,
2979 symtab_hdr->sh_link,
2980 sym->st_name);
2981 if (name == NULL)
2982 break;
2983
2984 if (*name == '\0')
2985 name = bfd_section_name (input_bfd, sec);
2986 }
2987
2988 (*info->callbacks->reloc_overflow)(info,
2989 name,
2990 howto->name,
2991 (bfd_vma) 0,
2992 input_bfd,
2993 input_section,
2994 offset);
2995 }
2996 break;
2997
2998 }
2999 }
bcbe2c71
MM		 3000 }
3001
bcbe2c71 3002
ede4eed4
KR		 3003#ifdef DEBUG
3004 fprintf (stderr, "\n");
3005#endif
bcbe2c71 3006
ede4eed4 3007 return ret;
bcbe2c71
MM		 3008}
3009
57081126 3010\f
ede4eed4
KR		 3011#define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
3012#define TARGET_LITTLE_NAME "elf32-powerpcle"
bcbe2c71
MM		 3013#define TARGET_BIG_SYM bfd_elf32_powerpc_vec
3014#define TARGET_BIG_NAME "elf32-powerpc"
3015#define ELF_ARCH bfd_arch_powerpc
3016#define ELF_MACHINE_CODE EM_PPC
3017#define ELF_MAXPAGESIZE 0x10000
ede4eed4 3018#define elf_info_to_howto ppc_elf_info_to_howto
bcbe2c71
MM		 3019
3020#ifdef EM_CYGNUS_POWERPC
3021#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
3022#endif
3023
3024#ifdef EM_PPC_OLD
3025#define ELF_MACHINE_ALT2 EM_PPC_OLD
3026#endif
3027
ede4eed4
KR		 3028#define bfd_elf32_bfd_copy_private_bfd_data ppc_elf_copy_private_bfd_data
3029#define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
3030#define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
3031#define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
83f4323e 3032#define elf_backend_section_from_shdr ppc_elf_section_from_shdr
ede4eed4 3033#define elf_backend_relocate_section ppc_elf_relocate_section
08556813
MM		 3034#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
3035#define elf_backend_check_relocs ppc_elf_check_relocs
3036#define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
9d621c7d 3037#define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
08556813
MM		 3038#define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
3039#define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
3040#define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
57081126 3041#define elf_backend_fake_sections ppc_elf_fake_sections
3f7ca26b
MM		 3042#define elf_backend_additional_program_headers ppc_elf_additional_program_headers
3043#define elf_backend_modify_segment_map ppc_elf_modify_segment_map
ede4eed4 3044
bcbe2c71 3045#include "elf32-target.h"
GDB Binutils - Deliverables
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