Commit | Line | Data |
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bcbe2c71 | 1 | /* PowerPC-specific support for 32-bit ELF |
91e32e23 | 2 | Copyright 1994, 1995, 1996, 1997, 1998 Free Software Foundation, Inc. |
bcbe2c71 MM |
3 | Written by Ian Lance Taylor, Cygnus Support. |
4 | ||
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
dd82c578 | 19 | Foundation, 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" |
91e32e23 UD |
31 | |
32 | #define START_RELOC_NUMBERS(name) enum name { | |
33 | #define RELOC_NUMBER(name, number) name = number , | |
34 | #define END_RELOC_NUMBERS }; | |
ede4eed4 | 35 | #include "elf/ppc.h" |
bcbe2c71 | 36 | |
08556813 MM |
37 | #define USE_RELA /* we want RELA relocations, not REL */ |
38 | ||
08556813 | 39 | |
ede4eed4 | 40 | static reloc_howto_type *ppc_elf_reloc_type_lookup |
bcbe2c71 | 41 | PARAMS ((bfd *abfd, bfd_reloc_code_real_type code)); |
ede4eed4 | 42 | static void ppc_elf_info_to_howto |
bcbe2c71 | 43 | PARAMS ((bfd *abfd, arelent *cache_ptr, Elf32_Internal_Rela *dst)); |
ede4eed4 | 44 | static void ppc_elf_howto_init PARAMS ((void)); |
dab45734 ILT |
45 | static bfd_reloc_status_type ppc_elf_addr16_ha_reloc |
46 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
ede4eed4 KR |
47 | static boolean ppc_elf_set_private_flags PARAMS ((bfd *, flagword)); |
48 | static boolean ppc_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *)); | |
49 | static boolean ppc_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *)); | |
50 | ||
3f7ca26b MM |
51 | static int ppc_elf_additional_program_headers PARAMS ((bfd *)); |
52 | static boolean ppc_elf_modify_segment_map PARAMS ((bfd *)); | |
53 | ||
91e32e23 UD |
54 | static boolean ppc_elf_create_dynamic_sections |
55 | PARAMS ((bfd *, struct bfd_link_info *)); | |
56 | ||
83f4323e MM |
57 | static boolean ppc_elf_section_from_shdr PARAMS ((bfd *, |
58 | Elf32_Internal_Shdr *, | |
59 | char *)); | |
6717fb0d ILT |
60 | static boolean ppc_elf_fake_sections |
61 | PARAMS ((bfd *, Elf32_Internal_Shdr *, asection *)); | |
83f4323e | 62 | |
3b3753b8 MM |
63 | static elf_linker_section_t *ppc_elf_create_linker_section |
64 | PARAMS ((bfd *abfd, | |
65 | struct bfd_link_info *info, | |
66 | enum elf_linker_section_enum)); | |
1c3a295b | 67 | |
08556813 MM |
68 | static boolean ppc_elf_check_relocs PARAMS ((bfd *, |
69 | struct bfd_link_info *, | |
70 | asection *, | |
71 | const Elf_Internal_Rela *)); | |
72 | ||
91e32e23 UD |
73 | static asection * ppc_elf_gc_mark_hook PARAMS ((bfd *abfd, |
74 | struct bfd_link_info *info, | |
75 | Elf_Internal_Rela *rel, | |
76 | struct elf_link_hash_entry *h, | |
77 | Elf_Internal_Sym *sym)); | |
78 | ||
79 | static boolean ppc_elf_gc_sweep_hook PARAMS ((bfd *abfd, | |
80 | struct bfd_link_info *info, | |
81 | asection *sec, | |
82 | const Elf_Internal_Rela *relocs)); | |
83 | ||
08556813 MM |
84 | static boolean ppc_elf_adjust_dynamic_symbol PARAMS ((struct bfd_link_info *, |
85 | struct elf_link_hash_entry *)); | |
86 | ||
87 | static boolean ppc_elf_adjust_dynindx PARAMS ((struct elf_link_hash_entry *, PTR)); | |
88 | ||
89 | static boolean ppc_elf_size_dynamic_sections PARAMS ((bfd *, struct bfd_link_info *)); | |
90 | ||
ede4eed4 KR |
91 | static boolean ppc_elf_relocate_section PARAMS ((bfd *, |
92 | struct bfd_link_info *info, | |
93 | bfd *, | |
94 | asection *, | |
95 | bfd_byte *, | |
96 | Elf_Internal_Rela *relocs, | |
97 | Elf_Internal_Sym *local_syms, | |
98 | asection **)); | |
bcbe2c71 | 99 | |
9d621c7d MM |
100 | static boolean ppc_elf_add_symbol_hook PARAMS ((bfd *, |
101 | struct bfd_link_info *, | |
102 | const Elf_Internal_Sym *, | |
103 | const char **, | |
104 | flagword *, | |
105 | asection **, | |
106 | bfd_vma *)); | |
107 | ||
08556813 MM |
108 | static boolean ppc_elf_finish_dynamic_symbol PARAMS ((bfd *, |
109 | struct bfd_link_info *, | |
110 | struct elf_link_hash_entry *, | |
111 | Elf_Internal_Sym *)); | |
bcbe2c71 | 112 | |
08556813 | 113 | static boolean ppc_elf_finish_dynamic_sections PARAMS ((bfd *, struct bfd_link_info *)); |
bcbe2c71 | 114 | |
d8fd85ad MM |
115 | #define BRANCH_PREDICT_BIT 0x200000 /* branch prediction bit for branch taken relocs */ |
116 | #define RA_REGISTER_MASK 0x001f0000 /* mask to set RA in memory instructions */ | |
117 | #define RA_REGISTER_SHIFT 16 /* value to shift register by to insert RA */ | |
08556813 MM |
118 | |
119 | /* The name of the dynamic interpreter. This is put in the .interp | |
120 | section. */ | |
121 | ||
122 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
bcbe2c71 | 123 | |
3f7ca26b MM |
124 | /* The size in bytes of an entry in the procedure linkage table, and of the initial size |
125 | of the plt reserved for the dynamic linker. */ | |
126 | ||
127 | #define PLT_ENTRY_SIZE 12 | |
128 | #define PLT_INITIAL_ENTRY_SIZE 72 | |
129 | ||
ede4eed4 KR |
130 | \f |
131 | static reloc_howto_type *ppc_elf_howto_table[ (int)R_PPC_max ]; | |
132 | ||
133 | static reloc_howto_type ppc_elf_howto_raw[] = | |
bcbe2c71 MM |
134 | { |
135 | /* This reloc does nothing. */ | |
08556813 MM |
136 | HOWTO (R_PPC_NONE, /* type */ |
137 | 0, /* rightshift */ | |
138 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
139 | 32, /* bitsize */ | |
140 | false, /* pc_relative */ | |
141 | 0, /* bitpos */ | |
bcbe2c71 | 142 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 143 | bfd_elf_generic_reloc, /* special_function */ |
08556813 MM |
144 | "R_PPC_NONE", /* name */ |
145 | false, /* partial_inplace */ | |
146 | 0, /* src_mask */ | |
147 | 0, /* dst_mask */ | |
148 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
149 | |
150 | /* A standard 32 bit relocation. */ | |
08556813 MM |
151 | HOWTO (R_PPC_ADDR32, /* type */ |
152 | 0, /* rightshift */ | |
153 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
154 | 32, /* bitsize */ | |
155 | false, /* pc_relative */ | |
156 | 0, /* bitpos */ | |
bcbe2c71 | 157 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 158 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 159 | "R_PPC_ADDR32", /* name */ |
08556813 MM |
160 | false, /* partial_inplace */ |
161 | 0, /* src_mask */ | |
162 | 0xffffffff, /* dst_mask */ | |
163 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
164 | |
165 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
166 | FIXME: we don't check that, we just clear them. */ | |
08556813 MM |
167 | HOWTO (R_PPC_ADDR24, /* type */ |
168 | 0, /* rightshift */ | |
169 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
170 | 26, /* bitsize */ | |
171 | false, /* pc_relative */ | |
172 | 0, /* bitpos */ | |
bcbe2c71 | 173 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 174 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 175 | "R_PPC_ADDR24", /* name */ |
08556813 MM |
176 | false, /* partial_inplace */ |
177 | 0, /* src_mask */ | |
178 | 0x3fffffc, /* dst_mask */ | |
179 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
180 | |
181 | /* A standard 16 bit relocation. */ | |
08556813 MM |
182 | HOWTO (R_PPC_ADDR16, /* type */ |
183 | 0, /* rightshift */ | |
184 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
185 | 16, /* bitsize */ | |
186 | false, /* pc_relative */ | |
187 | 0, /* bitpos */ | |
bcbe2c71 | 188 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 189 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 190 | "R_PPC_ADDR16", /* name */ |
08556813 MM |
191 | false, /* partial_inplace */ |
192 | 0, /* src_mask */ | |
193 | 0xffff, /* dst_mask */ | |
194 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
195 | |
196 | /* A 16 bit relocation without overflow. */ | |
08556813 MM |
197 | HOWTO (R_PPC_ADDR16_LO, /* type */ |
198 | 0, /* rightshift */ | |
199 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
200 | 16, /* bitsize */ | |
201 | false, /* pc_relative */ | |
202 | 0, /* bitpos */ | |
bcbe2c71 | 203 | complain_overflow_dont,/* complain_on_overflow */ |
bd2d10c0 | 204 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 205 | "R_PPC_ADDR16_LO", /* name */ |
08556813 MM |
206 | false, /* partial_inplace */ |
207 | 0, /* src_mask */ | |
208 | 0xffff, /* dst_mask */ | |
209 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
210 | |
211 | /* The high order 16 bits of an address. */ | |
08556813 MM |
212 | HOWTO (R_PPC_ADDR16_HI, /* type */ |
213 | 16, /* rightshift */ | |
214 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
215 | 16, /* bitsize */ | |
216 | false, /* pc_relative */ | |
217 | 0, /* bitpos */ | |
bcbe2c71 | 218 | complain_overflow_dont, /* complain_on_overflow */ |
bd2d10c0 | 219 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 220 | "R_PPC_ADDR16_HI", /* name */ |
08556813 MM |
221 | false, /* partial_inplace */ |
222 | 0, /* src_mask */ | |
223 | 0xffff, /* dst_mask */ | |
224 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
225 | |
226 | /* The high order 16 bits of an address, plus 1 if the contents of | |
08556813 MM |
227 | the low 16 bits, treated as a signed number, is negative. */ |
228 | HOWTO (R_PPC_ADDR16_HA, /* type */ | |
229 | 16, /* rightshift */ | |
230 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
231 | 16, /* bitsize */ | |
232 | false, /* pc_relative */ | |
233 | 0, /* bitpos */ | |
bcbe2c71 | 234 | complain_overflow_dont, /* complain_on_overflow */ |
dab45734 | 235 | ppc_elf_addr16_ha_reloc, /* special_function */ |
bcbe2c71 | 236 | "R_PPC_ADDR16_HA", /* name */ |
08556813 MM |
237 | false, /* partial_inplace */ |
238 | 0, /* src_mask */ | |
239 | 0xffff, /* dst_mask */ | |
240 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
241 | |
242 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
243 | FIXME: we don't check that, we just clear them. */ | |
08556813 MM |
244 | HOWTO (R_PPC_ADDR14, /* type */ |
245 | 0, /* rightshift */ | |
246 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
247 | 16, /* bitsize */ | |
248 | false, /* pc_relative */ | |
249 | 0, /* bitpos */ | |
bcbe2c71 | 250 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 251 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 252 | "R_PPC_ADDR14", /* name */ |
08556813 MM |
253 | false, /* partial_inplace */ |
254 | 0, /* src_mask */ | |
255 | 0xfffc, /* dst_mask */ | |
256 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
257 | |
258 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
08556813 MM |
259 | indicate that the branch is expected to be taken. The lower two |
260 | bits must be zero. */ | |
261 | HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */ | |
262 | 0, /* rightshift */ | |
263 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
264 | 16, /* bitsize */ | |
265 | false, /* pc_relative */ | |
266 | 0, /* bitpos */ | |
bcbe2c71 | 267 | complain_overflow_bitfield, /* complain_on_overflow */ |
07a159db | 268 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 269 | "R_PPC_ADDR14_BRTAKEN",/* name */ |
08556813 MM |
270 | false, /* partial_inplace */ |
271 | 0, /* src_mask */ | |
272 | 0xfffc, /* dst_mask */ | |
273 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
274 | |
275 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
276 | indicate that the branch is not expected to be taken. The lower | |
277 | two bits must be zero. */ | |
278 | HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */ | |
08556813 MM |
279 | 0, /* rightshift */ |
280 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
281 | 16, /* bitsize */ | |
282 | false, /* pc_relative */ | |
283 | 0, /* bitpos */ | |
bcbe2c71 | 284 | complain_overflow_bitfield, /* complain_on_overflow */ |
07a159db | 285 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 286 | "R_PPC_ADDR14_BRNTAKEN",/* name */ |
08556813 MM |
287 | false, /* partial_inplace */ |
288 | 0, /* src_mask */ | |
289 | 0xfffc, /* dst_mask */ | |
290 | false), /* pcrel_offset */ | |
291 | ||
292 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
293 | HOWTO (R_PPC_REL24, /* type */ | |
294 | 0, /* rightshift */ | |
295 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
296 | 26, /* bitsize */ | |
297 | true, /* pc_relative */ | |
298 | 0, /* bitpos */ | |
bcbe2c71 | 299 | complain_overflow_signed, /* complain_on_overflow */ |
bd2d10c0 | 300 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 301 | "R_PPC_REL24", /* name */ |
08556813 MM |
302 | false, /* partial_inplace */ |
303 | 0, /* src_mask */ | |
304 | 0x3fffffc, /* dst_mask */ | |
305 | true), /* pcrel_offset */ | |
306 | ||
307 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
308 | HOWTO (R_PPC_REL14, /* type */ | |
309 | 0, /* rightshift */ | |
310 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
311 | 16, /* bitsize */ | |
312 | true, /* pc_relative */ | |
313 | 0, /* bitpos */ | |
bcbe2c71 | 314 | complain_overflow_signed, /* complain_on_overflow */ |
bd2d10c0 | 315 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 316 | "R_PPC_REL14", /* name */ |
08556813 MM |
317 | false, /* partial_inplace */ |
318 | 0, /* src_mask */ | |
319 | 0xfffc, /* dst_mask */ | |
320 | true), /* pcrel_offset */ | |
bcbe2c71 | 321 | |
08556813 | 322 | /* A relative 16 bit branch. Bit 10 should be set to indicate that |
bcbe2c71 MM |
323 | the branch is expected to be taken. The lower two bits must be |
324 | zero. */ | |
08556813 MM |
325 | HOWTO (R_PPC_REL14_BRTAKEN, /* type */ |
326 | 0, /* rightshift */ | |
327 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
328 | 16, /* bitsize */ | |
329 | true, /* pc_relative */ | |
330 | 0, /* bitpos */ | |
bcbe2c71 | 331 | complain_overflow_signed, /* complain_on_overflow */ |
07a159db | 332 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 333 | "R_PPC_REL14_BRTAKEN", /* name */ |
08556813 MM |
334 | false, /* partial_inplace */ |
335 | 0, /* src_mask */ | |
336 | 0xfffc, /* dst_mask */ | |
337 | true), /* pcrel_offset */ | |
bcbe2c71 | 338 | |
08556813 | 339 | /* A relative 16 bit branch. Bit 10 should be set to indicate that |
bcbe2c71 MM |
340 | the branch is not expected to be taken. The lower two bits must |
341 | be zero. */ | |
08556813 MM |
342 | HOWTO (R_PPC_REL14_BRNTAKEN, /* type */ |
343 | 0, /* rightshift */ | |
344 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
345 | 16, /* bitsize */ | |
346 | true, /* pc_relative */ | |
347 | 0, /* bitpos */ | |
bcbe2c71 | 348 | complain_overflow_signed, /* complain_on_overflow */ |
07a159db | 349 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 350 | "R_PPC_REL14_BRNTAKEN",/* name */ |
08556813 MM |
351 | false, /* partial_inplace */ |
352 | 0, /* src_mask */ | |
353 | 0xfffc, /* dst_mask */ | |
354 | true), /* pcrel_offset */ | |
bcbe2c71 MM |
355 | |
356 | /* Like R_PPC_ADDR16, but referring to the GOT table entry for the | |
357 | symbol. */ | |
08556813 MM |
358 | HOWTO (R_PPC_GOT16, /* type */ |
359 | 0, /* rightshift */ | |
360 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
361 | 16, /* bitsize */ | |
362 | false, /* pc_relative */ | |
363 | 0, /* bitpos */ | |
ede4eed4 | 364 | complain_overflow_signed, /* complain_on_overflow */ |
07a159db | 365 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 366 | "R_PPC_GOT16", /* name */ |
08556813 MM |
367 | false, /* partial_inplace */ |
368 | 0, /* src_mask */ | |
369 | 0xffff, /* dst_mask */ | |
370 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
371 | |
372 | /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for | |
373 | the symbol. */ | |
08556813 MM |
374 | HOWTO (R_PPC_GOT16_LO, /* type */ |
375 | 0, /* rightshift */ | |
376 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
377 | 16, /* bitsize */ | |
378 | false, /* pc_relative */ | |
379 | 0, /* bitpos */ | |
bcbe2c71 | 380 | complain_overflow_bitfield, /* complain_on_overflow */ |
07a159db | 381 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 382 | "R_PPC_GOT16_LO", /* name */ |
08556813 MM |
383 | false, /* partial_inplace */ |
384 | 0, /* src_mask */ | |
385 | 0xffff, /* dst_mask */ | |
386 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
387 | |
388 | /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for | |
389 | the symbol. */ | |
08556813 MM |
390 | HOWTO (R_PPC_GOT16_HI, /* type */ |
391 | 16, /* rightshift */ | |
392 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
393 | 16, /* bitsize */ | |
394 | false, /* pc_relative */ | |
395 | 0, /* bitpos */ | |
bcbe2c71 | 396 | complain_overflow_bitfield, /* complain_on_overflow */ |
07a159db | 397 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 398 | "R_PPC_GOT16_HI", /* name */ |
08556813 MM |
399 | false, /* partial_inplace */ |
400 | 0, /* src_mask */ | |
401 | 0xffff, /* dst_mask */ | |
402 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
403 | |
404 | /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for | |
cf5138e3 | 405 | the symbol. */ |
08556813 | 406 | HOWTO (R_PPC_GOT16_HA, /* type */ |
b6eb341b | 407 | 16, /* rightshift */ |
08556813 MM |
408 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
409 | 16, /* bitsize */ | |
410 | false, /* pc_relative */ | |
411 | 0, /* bitpos */ | |
bcbe2c71 | 412 | complain_overflow_bitfield, /* complain_on_overflow */ |
b6eb341b | 413 | ppc_elf_addr16_ha_reloc, /* special_function */ |
bcbe2c71 | 414 | "R_PPC_GOT16_HA", /* name */ |
08556813 MM |
415 | false, /* partial_inplace */ |
416 | 0, /* src_mask */ | |
417 | 0xffff, /* dst_mask */ | |
418 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
419 | |
420 | /* Like R_PPC_REL24, but referring to the procedure linkage table | |
91e32e23 | 421 | entry for the symbol. */ |
02f85cda | 422 | HOWTO (R_PPC_PLTREL24, /* type */ |
08556813 MM |
423 | 0, /* rightshift */ |
424 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
425 | 26, /* bitsize */ | |
426 | true, /* pc_relative */ | |
427 | 0, /* bitpos */ | |
428 | complain_overflow_signed, /* complain_on_overflow */ | |
bd2d10c0 | 429 | bfd_elf_generic_reloc, /* special_function */ |
02f85cda | 430 | "R_PPC_PLTREL24", /* name */ |
08556813 MM |
431 | false, /* partial_inplace */ |
432 | 0, /* src_mask */ | |
433 | 0x3fffffc, /* dst_mask */ | |
434 | true), /* pcrel_offset */ | |
bcbe2c71 MM |
435 | |
436 | /* This is used only by the dynamic linker. The symbol should exist | |
437 | both in the object being run and in some shared library. The | |
438 | dynamic linker copies the data addressed by the symbol from the | |
91e32e23 UD |
439 | shared library into the object, because the object being |
440 | run has to have the data at some particular address. */ | |
08556813 MM |
441 | HOWTO (R_PPC_COPY, /* type */ |
442 | 0, /* rightshift */ | |
443 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
444 | 32, /* bitsize */ | |
445 | false, /* pc_relative */ | |
446 | 0, /* bitpos */ | |
bcbe2c71 | 447 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 448 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 449 | "R_PPC_COPY", /* name */ |
08556813 MM |
450 | false, /* partial_inplace */ |
451 | 0, /* src_mask */ | |
452 | 0, /* dst_mask */ | |
453 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
454 | |
455 | /* Like R_PPC_ADDR32, but used when setting global offset table | |
456 | entries. */ | |
08556813 MM |
457 | HOWTO (R_PPC_GLOB_DAT, /* type */ |
458 | 0, /* rightshift */ | |
459 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
460 | 32, /* bitsize */ | |
461 | false, /* pc_relative */ | |
462 | 0, /* bitpos */ | |
bcbe2c71 | 463 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 464 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 465 | "R_PPC_GLOB_DAT", /* name */ |
08556813 MM |
466 | false, /* partial_inplace */ |
467 | 0, /* src_mask */ | |
468 | 0xffffffff, /* dst_mask */ | |
469 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
470 | |
471 | /* Marks a procedure linkage table entry for a symbol. */ | |
08556813 MM |
472 | HOWTO (R_PPC_JMP_SLOT, /* type */ |
473 | 0, /* rightshift */ | |
474 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
475 | 32, /* bitsize */ | |
476 | false, /* pc_relative */ | |
477 | 0, /* bitpos */ | |
bcbe2c71 | 478 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 479 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 480 | "R_PPC_JMP_SLOT", /* name */ |
08556813 MM |
481 | false, /* partial_inplace */ |
482 | 0, /* src_mask */ | |
483 | 0, /* dst_mask */ | |
484 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
485 | |
486 | /* Used only by the dynamic linker. When the object is run, this | |
487 | longword is set to the load address of the object, plus the | |
488 | addend. */ | |
08556813 MM |
489 | HOWTO (R_PPC_RELATIVE, /* type */ |
490 | 0, /* rightshift */ | |
491 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
492 | 32, /* bitsize */ | |
493 | false, /* pc_relative */ | |
494 | 0, /* bitpos */ | |
bcbe2c71 | 495 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 496 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 497 | "R_PPC_RELATIVE", /* name */ |
08556813 MM |
498 | false, /* partial_inplace */ |
499 | 0, /* src_mask */ | |
500 | 0xffffffff, /* dst_mask */ | |
501 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
502 | |
503 | /* Like R_PPC_REL24, but uses the value of the symbol within the | |
504 | object rather than the final value. Normally used for | |
91e32e23 | 505 | _GLOBAL_OFFSET_TABLE_. */ |
08556813 MM |
506 | HOWTO (R_PPC_LOCAL24PC, /* type */ |
507 | 0, /* rightshift */ | |
508 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
509 | 26, /* bitsize */ | |
510 | true, /* pc_relative */ | |
511 | 0, /* bitpos */ | |
bcbe2c71 | 512 | complain_overflow_signed, /* complain_on_overflow */ |
bd2d10c0 | 513 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 514 | "R_PPC_LOCAL24PC", /* name */ |
08556813 MM |
515 | false, /* partial_inplace */ |
516 | 0, /* src_mask */ | |
517 | 0x3fffffc, /* dst_mask */ | |
518 | true), /* pcrel_offset */ | |
bcbe2c71 MM |
519 | |
520 | /* Like R_PPC_ADDR32, but may be unaligned. */ | |
08556813 MM |
521 | HOWTO (R_PPC_UADDR32, /* type */ |
522 | 0, /* rightshift */ | |
523 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
524 | 32, /* bitsize */ | |
525 | false, /* pc_relative */ | |
526 | 0, /* bitpos */ | |
bcbe2c71 | 527 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 528 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 529 | "R_PPC_UADDR32", /* name */ |
08556813 MM |
530 | false, /* partial_inplace */ |
531 | 0, /* src_mask */ | |
532 | 0xffffffff, /* dst_mask */ | |
533 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
534 | |
535 | /* Like R_PPC_ADDR16, but may be unaligned. */ | |
08556813 MM |
536 | HOWTO (R_PPC_UADDR16, /* type */ |
537 | 0, /* rightshift */ | |
538 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
539 | 16, /* bitsize */ | |
540 | false, /* pc_relative */ | |
541 | 0, /* bitpos */ | |
bcbe2c71 | 542 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 543 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 544 | "R_PPC_UADDR16", /* name */ |
08556813 MM |
545 | false, /* partial_inplace */ |
546 | 0, /* src_mask */ | |
547 | 0xffff, /* dst_mask */ | |
548 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
549 | |
550 | /* 32-bit PC relative */ | |
551 | HOWTO (R_PPC_REL32, /* type */ | |
08556813 MM |
552 | 0, /* rightshift */ |
553 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
554 | 32, /* bitsize */ | |
555 | true, /* pc_relative */ | |
556 | 0, /* bitpos */ | |
bcbe2c71 | 557 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 558 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 559 | "R_PPC_REL32", /* name */ |
08556813 MM |
560 | false, /* partial_inplace */ |
561 | 0, /* src_mask */ | |
562 | 0xffffffff, /* dst_mask */ | |
bcbe2c71 MM |
563 | true), /* pcrel_offset */ |
564 | ||
565 | /* 32-bit relocation to the symbol's procedure linkage table. | |
91e32e23 | 566 | FIXME: not supported. */ |
bcbe2c71 | 567 | HOWTO (R_PPC_PLT32, /* type */ |
08556813 MM |
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_PLT32", /* name */ |
08556813 MM |
576 | false, /* partial_inplace */ |
577 | 0, /* src_mask */ | |
578 | 0, /* dst_mask */ | |
579 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
580 | |
581 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
91e32e23 | 582 | FIXME: not supported. */ |
bcbe2c71 | 583 | HOWTO (R_PPC_PLTREL32, /* type */ |
08556813 MM |
584 | 0, /* rightshift */ |
585 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
586 | 32, /* bitsize */ | |
587 | true, /* pc_relative */ | |
588 | 0, /* bitpos */ | |
bcbe2c71 | 589 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 590 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 591 | "R_PPC_PLTREL32", /* name */ |
08556813 MM |
592 | false, /* partial_inplace */ |
593 | 0, /* src_mask */ | |
594 | 0, /* dst_mask */ | |
bcbe2c71 MM |
595 | true), /* pcrel_offset */ |
596 | ||
597 | /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for | |
598 | the symbol. */ | |
08556813 MM |
599 | HOWTO (R_PPC_PLT16_LO, /* type */ |
600 | 0, /* rightshift */ | |
601 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
602 | 16, /* bitsize */ | |
603 | false, /* pc_relative */ | |
604 | 0, /* bitpos */ | |
bcbe2c71 | 605 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 606 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 607 | "R_PPC_PLT16_LO", /* name */ |
08556813 MM |
608 | false, /* partial_inplace */ |
609 | 0, /* src_mask */ | |
610 | 0xffff, /* dst_mask */ | |
611 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
612 | |
613 | /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for | |
614 | the symbol. */ | |
08556813 MM |
615 | HOWTO (R_PPC_PLT16_HI, /* type */ |
616 | 16, /* rightshift */ | |
617 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
618 | 16, /* bitsize */ | |
619 | false, /* pc_relative */ | |
620 | 0, /* bitpos */ | |
bcbe2c71 | 621 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 622 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 623 | "R_PPC_PLT16_HI", /* name */ |
08556813 MM |
624 | false, /* partial_inplace */ |
625 | 0, /* src_mask */ | |
626 | 0xffff, /* dst_mask */ | |
627 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
628 | |
629 | /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for | |
08556813 MM |
630 | the symbol. FIXME: Not supported. */ |
631 | HOWTO (R_PPC_PLT16_HA, /* type */ | |
632 | 0, /* rightshift */ | |
633 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
634 | 16, /* bitsize */ | |
635 | false, /* pc_relative */ | |
636 | 0, /* bitpos */ | |
bcbe2c71 | 637 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 638 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 639 | "R_PPC_PLT16_HA", /* name */ |
08556813 MM |
640 | false, /* partial_inplace */ |
641 | 0, /* src_mask */ | |
642 | 0xffff, /* dst_mask */ | |
643 | false), /* pcrel_offset */ | |
bcbe2c71 | 644 | |
4500a112 | 645 | /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with |
cf5138e3 | 646 | small data items. */ |
02f85cda | 647 | HOWTO (R_PPC_SDAREL16, /* type */ |
08556813 MM |
648 | 0, /* rightshift */ |
649 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
650 | 16, /* bitsize */ | |
651 | false, /* pc_relative */ | |
652 | 0, /* bitpos */ | |
dd82c578 | 653 | complain_overflow_signed, /* complain_on_overflow */ |
07a159db | 654 | bfd_elf_generic_reloc, /* special_function */ |
02f85cda | 655 | "R_PPC_SDAREL16", /* name */ |
08556813 MM |
656 | false, /* partial_inplace */ |
657 | 0, /* src_mask */ | |
658 | 0xffff, /* dst_mask */ | |
659 | false), /* pcrel_offset */ | |
bcbe2c71 | 660 | |
cf5138e3 | 661 | /* 32-bit section relative relocation. */ |
bcbe2c71 | 662 | HOWTO (R_PPC_SECTOFF, /* type */ |
08556813 MM |
663 | 0, /* rightshift */ |
664 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
665 | 32, /* bitsize */ | |
666 | true, /* pc_relative */ | |
667 | 0, /* bitpos */ | |
bcbe2c71 | 668 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 669 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 670 | "R_PPC_SECTOFF", /* name */ |
08556813 MM |
671 | false, /* partial_inplace */ |
672 | 0, /* src_mask */ | |
673 | 0, /* dst_mask */ | |
bcbe2c71 MM |
674 | true), /* pcrel_offset */ |
675 | ||
cf5138e3 | 676 | /* 16-bit lower half section relative relocation. */ |
08556813 MM |
677 | HOWTO (R_PPC_SECTOFF_LO, /* 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_SECTOFF_LO", /* name */ |
08556813 MM |
686 | false, /* partial_inplace */ |
687 | 0, /* src_mask */ | |
688 | 0xffff, /* dst_mask */ | |
689 | false), /* pcrel_offset */ | |
bcbe2c71 | 690 | |
cf5138e3 | 691 | /* 16-bit upper half section relative relocation. */ |
bcbe2c71 | 692 | HOWTO (R_PPC_SECTOFF_HI, /* type */ |
08556813 MM |
693 | 16, /* rightshift */ |
694 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
695 | 16, /* bitsize */ | |
696 | false, /* pc_relative */ | |
697 | 0, /* bitpos */ | |
bcbe2c71 | 698 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 699 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 700 | "R_PPC_SECTOFF_HI", /* name */ |
08556813 MM |
701 | false, /* partial_inplace */ |
702 | 0, /* src_mask */ | |
703 | 0xffff, /* dst_mask */ | |
704 | false), /* pcrel_offset */ | |
bcbe2c71 | 705 | |
cf5138e3 | 706 | /* 16-bit upper half adjusted section relative relocation. */ |
bcbe2c71 | 707 | HOWTO (R_PPC_SECTOFF_HA, /* type */ |
08556813 MM |
708 | 0, /* rightshift */ |
709 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
710 | 16, /* bitsize */ | |
711 | false, /* pc_relative */ | |
712 | 0, /* bitpos */ | |
bcbe2c71 | 713 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 714 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 715 | "R_PPC_SECTOFF_HA", /* name */ |
08556813 MM |
716 | false, /* partial_inplace */ |
717 | 0, /* src_mask */ | |
718 | 0xffff, /* dst_mask */ | |
719 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
720 | |
721 | /* The remaining relocs are from the Embedded ELF ABI, and are not | |
722 | in the SVR4 ELF ABI. */ | |
723 | ||
724 | /* 32 bit value resulting from the addend minus the symbol */ | |
725 | HOWTO (R_PPC_EMB_NADDR32, /* type */ | |
08556813 MM |
726 | 0, /* rightshift */ |
727 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
728 | 32, /* bitsize */ | |
729 | false, /* pc_relative */ | |
730 | 0, /* bitpos */ | |
bcbe2c71 | 731 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 732 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 733 | "R_PPC_EMB_NADDR32", /* name */ |
08556813 MM |
734 | false, /* partial_inplace */ |
735 | 0, /* src_mask */ | |
736 | 0xffffffff, /* dst_mask */ | |
737 | false), /* pcrel_offset */ | |
bcbe2c71 | 738 | |
4500a112 | 739 | /* 16 bit value resulting from the addend minus the symbol */ |
bcbe2c71 | 740 | HOWTO (R_PPC_EMB_NADDR16, /* type */ |
08556813 MM |
741 | 0, /* rightshift */ |
742 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
743 | 16, /* bitsize */ | |
744 | false, /* pc_relative */ | |
745 | 0, /* bitpos */ | |
bcbe2c71 | 746 | complain_overflow_bitfield, /* complain_on_overflow */ |
bd2d10c0 | 747 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 748 | "R_PPC_EMB_NADDR16", /* name */ |
08556813 MM |
749 | false, /* partial_inplace */ |
750 | 0, /* src_mask */ | |
751 | 0xffff, /* dst_mask */ | |
752 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
753 | |
754 | /* 16 bit value resulting from the addend minus the symbol */ | |
755 | HOWTO (R_PPC_EMB_NADDR16_LO, /* type */ | |
08556813 MM |
756 | 0, /* rightshift */ |
757 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
758 | 16, /* bitsize */ | |
759 | false, /* pc_relative */ | |
760 | 0, /* bitpos */ | |
bcbe2c71 | 761 | complain_overflow_dont,/* complain_on_overflow */ |
bd2d10c0 | 762 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 763 | "R_PPC_EMB_ADDR16_LO", /* name */ |
08556813 MM |
764 | false, /* partial_inplace */ |
765 | 0, /* src_mask */ | |
766 | 0xffff, /* dst_mask */ | |
767 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
768 | |
769 | /* The high order 16 bits of the addend minus the symbol */ | |
770 | HOWTO (R_PPC_EMB_NADDR16_HI, /* type */ | |
08556813 MM |
771 | 16, /* rightshift */ |
772 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
773 | 16, /* bitsize */ | |
774 | false, /* pc_relative */ | |
775 | 0, /* bitpos */ | |
bcbe2c71 | 776 | complain_overflow_dont, /* complain_on_overflow */ |
bd2d10c0 | 777 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 778 | "R_PPC_EMB_NADDR16_HI", /* name */ |
08556813 MM |
779 | false, /* partial_inplace */ |
780 | 0, /* src_mask */ | |
781 | 0xffff, /* dst_mask */ | |
782 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
783 | |
784 | /* The high order 16 bits of the result of the addend minus the address, | |
785 | plus 1 if the contents of the low 16 bits, treated as a signed number, | |
786 | is negative. */ | |
787 | HOWTO (R_PPC_EMB_NADDR16_HA, /* type */ | |
08556813 MM |
788 | 16, /* rightshift */ |
789 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
790 | 16, /* bitsize */ | |
791 | false, /* pc_relative */ | |
792 | 0, /* bitpos */ | |
bcbe2c71 | 793 | complain_overflow_dont, /* complain_on_overflow */ |
bd2d10c0 | 794 | bfd_elf_generic_reloc, /* special_function */ |
bcbe2c71 | 795 | "R_PPC_EMB_NADDR16_HA", /* name */ |
08556813 MM |
796 | false, /* partial_inplace */ |
797 | 0, /* src_mask */ | |
798 | 0xffff, /* dst_mask */ | |
799 | false), /* pcrel_offset */ | |
800 | ||
4500a112 MM |
801 | /* 16 bit value resulting from allocating a 4 byte word to hold an |
802 | address in the .sdata section, and returning the offset from | |
803 | _SDA_BASE_ for that relocation */ | |
804 | HOWTO (R_PPC_EMB_SDAI16, /* type */ | |
805 | 0, /* rightshift */ | |
806 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
807 | 16, /* bitsize */ | |
808 | false, /* pc_relative */ | |
809 | 0, /* bitpos */ | |
810 | complain_overflow_bitfield, /* complain_on_overflow */ | |
811 | bfd_elf_generic_reloc, /* special_function */ | |
812 | "R_PPC_EMB_SDAI16", /* name */ | |
813 | false, /* partial_inplace */ | |
814 | 0, /* src_mask */ | |
815 | 0xffff, /* dst_mask */ | |
816 | false), /* pcrel_offset */ | |
817 | ||
818 | /* 16 bit value resulting from allocating a 4 byte word to hold an | |
819 | address in the .sdata2 section, and returning the offset from | |
820 | _SDA2_BASE_ for that relocation */ | |
821 | HOWTO (R_PPC_EMB_SDA2I16, /* type */ | |
822 | 0, /* rightshift */ | |
823 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
824 | 16, /* bitsize */ | |
825 | false, /* pc_relative */ | |
826 | 0, /* bitpos */ | |
827 | complain_overflow_bitfield, /* complain_on_overflow */ | |
828 | bfd_elf_generic_reloc, /* special_function */ | |
829 | "R_PPC_EMB_SDA2I16", /* name */ | |
830 | false, /* partial_inplace */ | |
831 | 0, /* src_mask */ | |
832 | 0xffff, /* dst_mask */ | |
833 | false), /* pcrel_offset */ | |
834 | ||
835 | /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with | |
cf5138e3 | 836 | small data items. */ |
4500a112 MM |
837 | HOWTO (R_PPC_EMB_SDA2REL, /* type */ |
838 | 0, /* rightshift */ | |
839 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
840 | 16, /* bitsize */ | |
841 | false, /* pc_relative */ | |
842 | 0, /* bitpos */ | |
843 | complain_overflow_signed, /* complain_on_overflow */ | |
844 | bfd_elf_generic_reloc, /* special_function */ | |
845 | "R_PPC_EMB_SDA2REL", /* name */ | |
846 | false, /* partial_inplace */ | |
847 | 0, /* src_mask */ | |
848 | 0xffff, /* dst_mask */ | |
849 | false), /* pcrel_offset */ | |
850 | ||
851 | /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit | |
852 | signed offset from the appropriate base, and filling in the register | |
853 | field with the appropriate register (0, 2, or 13). */ | |
854 | HOWTO (R_PPC_EMB_SDA21, /* type */ | |
855 | 0, /* rightshift */ | |
cf5138e3 | 856 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
4500a112 MM |
857 | 16, /* bitsize */ |
858 | false, /* pc_relative */ | |
859 | 0, /* bitpos */ | |
860 | complain_overflow_signed, /* complain_on_overflow */ | |
861 | bfd_elf_generic_reloc, /* special_function */ | |
862 | "R_PPC_EMB_SDA21", /* name */ | |
863 | false, /* partial_inplace */ | |
864 | 0, /* src_mask */ | |
865 | 0xffff, /* dst_mask */ | |
866 | false), /* pcrel_offset */ | |
867 | ||
868 | /* Relocation not handled: R_PPC_EMB_MRKREF */ | |
869 | /* Relocation not handled: R_PPC_EMB_RELSEC16 */ | |
870 | /* Relocation not handled: R_PPC_EMB_RELST_LO */ | |
871 | /* Relocation not handled: R_PPC_EMB_RELST_HI */ | |
872 | /* Relocation not handled: R_PPC_EMB_RELST_HA */ | |
873 | /* Relocation not handled: R_PPC_EMB_BIT_FLD */ | |
874 | ||
875 | /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling | |
876 | in the 16 bit signed offset from the appropriate base, and filling in the | |
877 | register field with the appropriate register (0, 2, or 13). */ | |
878 | HOWTO (R_PPC_EMB_RELSDA, /* type */ | |
879 | 0, /* rightshift */ | |
880 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
881 | 16, /* bitsize */ | |
882 | true, /* pc_relative */ | |
883 | 0, /* bitpos */ | |
884 | complain_overflow_signed, /* complain_on_overflow */ | |
885 | bfd_elf_generic_reloc, /* special_function */ | |
886 | "R_PPC_EMB_RELSDA", /* name */ | |
887 | false, /* partial_inplace */ | |
888 | 0, /* src_mask */ | |
889 | 0xffff, /* dst_mask */ | |
890 | false), /* pcrel_offset */ | |
891 | ||
91e32e23 UD |
892 | /* GNU extension to record C++ vtable hierarchy */ |
893 | HOWTO (R_PPC_GNU_VTINHERIT, /* type */ | |
894 | 0, /* rightshift */ | |
895 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
896 | 0, /* bitsize */ | |
897 | false, /* pc_relative */ | |
898 | 0, /* bitpos */ | |
899 | complain_overflow_dont, /* complain_on_overflow */ | |
900 | NULL, /* special_function */ | |
901 | "R_PPC_GNU_VTINHERIT", /* name */ | |
902 | false, /* partial_inplace */ | |
903 | 0, /* src_mask */ | |
904 | 0, /* dst_mask */ | |
905 | false), /* pcrel_offset */ | |
906 | ||
907 | /* GNU extension to record C++ vtable member usage */ | |
908 | HOWTO (R_PPC_GNU_VTENTRY, /* type */ | |
909 | 0, /* rightshift */ | |
910 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
911 | 0, /* bitsize */ | |
912 | false, /* pc_relative */ | |
913 | 0, /* bitpos */ | |
914 | complain_overflow_dont, /* complain_on_overflow */ | |
915 | NULL, /* special_function */ | |
916 | "R_PPC_GNU_VTENTRY", /* name */ | |
917 | false, /* partial_inplace */ | |
918 | 0, /* src_mask */ | |
919 | 0, /* dst_mask */ | |
920 | false), /* pcrel_offset */ | |
921 | ||
08556813 MM |
922 | /* Phony reloc to handle AIX style TOC entries */ |
923 | HOWTO (R_PPC_TOC16, /* type */ | |
924 | 0, /* rightshift */ | |
925 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
926 | 16, /* bitsize */ | |
927 | false, /* pc_relative */ | |
928 | 0, /* bitpos */ | |
929 | complain_overflow_signed, /* complain_on_overflow */ | |
07a159db | 930 | bfd_elf_generic_reloc, /* special_function */ |
08556813 MM |
931 | "R_PPC_TOC16", /* name */ |
932 | false, /* partial_inplace */ | |
933 | 0, /* src_mask */ | |
934 | 0xffff, /* dst_mask */ | |
935 | false), /* pcrel_offset */ | |
bcbe2c71 MM |
936 | }; |
937 | ||
ede4eed4 KR |
938 | \f |
939 | /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */ | |
940 | ||
941 | static void | |
942 | ppc_elf_howto_init () | |
943 | { | |
944 | unsigned int i, type; | |
945 | ||
946 | for (i = 0; i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); i++) | |
947 | { | |
948 | type = ppc_elf_howto_raw[i].type; | |
949 | BFD_ASSERT (type < sizeof(ppc_elf_howto_table) / sizeof(ppc_elf_howto_table[0])); | |
950 | ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i]; | |
951 | } | |
952 | } | |
953 | ||
954 | \f | |
955 | static reloc_howto_type * | |
956 | ppc_elf_reloc_type_lookup (abfd, code) | |
957 | bfd *abfd; | |
958 | bfd_reloc_code_real_type code; | |
959 | { | |
08556813 | 960 | enum ppc_reloc_type ppc_reloc = R_PPC_NONE; |
02f85cda | 961 | |
91e32e23 UD |
962 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) |
963 | /* Initialize howto table if needed */ | |
ede4eed4 KR |
964 | ppc_elf_howto_init (); |
965 | ||
966 | switch ((int)code) | |
967 | { | |
02f85cda MM |
968 | default: |
969 | return (reloc_howto_type *)NULL; | |
970 | ||
971 | case BFD_RELOC_NONE: ppc_reloc = R_PPC_NONE; break; | |
972 | case BFD_RELOC_32: ppc_reloc = R_PPC_ADDR32; break; | |
973 | case BFD_RELOC_PPC_BA26: ppc_reloc = R_PPC_ADDR24; break; | |
974 | case BFD_RELOC_16: ppc_reloc = R_PPC_ADDR16; break; | |
975 | case BFD_RELOC_LO16: ppc_reloc = R_PPC_ADDR16_LO; break; | |
976 | case BFD_RELOC_HI16: ppc_reloc = R_PPC_ADDR16_HI; break; | |
977 | case BFD_RELOC_HI16_S: ppc_reloc = R_PPC_ADDR16_HA; break; | |
978 | case BFD_RELOC_PPC_BA16: ppc_reloc = R_PPC_ADDR14; break; | |
979 | case BFD_RELOC_PPC_BA16_BRTAKEN: ppc_reloc = R_PPC_ADDR14_BRTAKEN; break; | |
980 | case BFD_RELOC_PPC_BA16_BRNTAKEN: ppc_reloc = R_PPC_ADDR14_BRNTAKEN; break; | |
981 | case BFD_RELOC_PPC_B26: ppc_reloc = R_PPC_REL24; break; | |
982 | case BFD_RELOC_PPC_B16: ppc_reloc = R_PPC_REL14; break; | |
983 | case BFD_RELOC_PPC_B16_BRTAKEN: ppc_reloc = R_PPC_REL14_BRTAKEN; break; | |
984 | case BFD_RELOC_PPC_B16_BRNTAKEN: ppc_reloc = R_PPC_REL14_BRNTAKEN; break; | |
08556813 | 985 | case BFD_RELOC_16_GOTOFF: ppc_reloc = R_PPC_GOT16; break; |
02f85cda MM |
986 | case BFD_RELOC_LO16_GOTOFF: ppc_reloc = R_PPC_GOT16_LO; break; |
987 | case BFD_RELOC_HI16_GOTOFF: ppc_reloc = R_PPC_GOT16_HI; break; | |
988 | case BFD_RELOC_HI16_S_GOTOFF: ppc_reloc = R_PPC_GOT16_HA; break; | |
989 | case BFD_RELOC_24_PLT_PCREL: ppc_reloc = R_PPC_PLTREL24; break; | |
990 | case BFD_RELOC_PPC_COPY: ppc_reloc = R_PPC_COPY; break; | |
991 | case BFD_RELOC_PPC_GLOB_DAT: ppc_reloc = R_PPC_GLOB_DAT; break; | |
992 | case BFD_RELOC_PPC_LOCAL24PC: ppc_reloc = R_PPC_LOCAL24PC; break; | |
993 | case BFD_RELOC_32_PCREL: ppc_reloc = R_PPC_REL32; break; | |
994 | case BFD_RELOC_32_PLTOFF: ppc_reloc = R_PPC_PLT32; break; | |
995 | case BFD_RELOC_32_PLT_PCREL: ppc_reloc = R_PPC_PLTREL32; break; | |
996 | case BFD_RELOC_LO16_PLTOFF: ppc_reloc = R_PPC_PLT16_LO; break; | |
997 | case BFD_RELOC_HI16_PLTOFF: ppc_reloc = R_PPC_PLT16_HI; break; | |
998 | case BFD_RELOC_HI16_S_PLTOFF: ppc_reloc = R_PPC_PLT16_HA; break; | |
999 | case BFD_RELOC_GPREL16: ppc_reloc = R_PPC_SDAREL16; break; | |
1000 | case BFD_RELOC_32_BASEREL: ppc_reloc = R_PPC_SECTOFF; break; | |
1001 | case BFD_RELOC_LO16_BASEREL: ppc_reloc = R_PPC_SECTOFF_LO; break; | |
1002 | case BFD_RELOC_HI16_BASEREL: ppc_reloc = R_PPC_SECTOFF_HI; break; | |
1003 | case BFD_RELOC_HI16_S_BASEREL: ppc_reloc = R_PPC_SECTOFF_HA; break; | |
1004 | case BFD_RELOC_CTOR: ppc_reloc = R_PPC_ADDR32; break; | |
08556813 | 1005 | case BFD_RELOC_PPC_TOC16: ppc_reloc = R_PPC_TOC16; break; |
4500a112 MM |
1006 | case BFD_RELOC_PPC_EMB_NADDR32: ppc_reloc = R_PPC_EMB_NADDR32; break; |
1007 | case BFD_RELOC_PPC_EMB_NADDR16: ppc_reloc = R_PPC_EMB_NADDR16; break; | |
1008 | case BFD_RELOC_PPC_EMB_NADDR16_LO: ppc_reloc = R_PPC_EMB_NADDR16_LO; break; | |
1009 | case BFD_RELOC_PPC_EMB_NADDR16_HI: ppc_reloc = R_PPC_EMB_NADDR16_HI; break; | |
1010 | case BFD_RELOC_PPC_EMB_NADDR16_HA: ppc_reloc = R_PPC_EMB_NADDR16_HA; break; | |
1011 | case BFD_RELOC_PPC_EMB_SDAI16: ppc_reloc = R_PPC_EMB_SDAI16; break; | |
1012 | case BFD_RELOC_PPC_EMB_SDA2I16: ppc_reloc = R_PPC_EMB_SDA2I16; break; | |
1013 | case BFD_RELOC_PPC_EMB_SDA2REL: ppc_reloc = R_PPC_EMB_SDA2REL; break; | |
1014 | case BFD_RELOC_PPC_EMB_SDA21: ppc_reloc = R_PPC_EMB_SDA21; break; | |
1015 | case BFD_RELOC_PPC_EMB_MRKREF: ppc_reloc = R_PPC_EMB_MRKREF; break; | |
1016 | case BFD_RELOC_PPC_EMB_RELSEC16: ppc_reloc = R_PPC_EMB_RELSEC16; break; | |
1017 | case BFD_RELOC_PPC_EMB_RELST_LO: ppc_reloc = R_PPC_EMB_RELST_LO; break; | |
1018 | case BFD_RELOC_PPC_EMB_RELST_HI: ppc_reloc = R_PPC_EMB_RELST_HI; break; | |
1019 | case BFD_RELOC_PPC_EMB_RELST_HA: ppc_reloc = R_PPC_EMB_RELST_HA; break; | |
1020 | case BFD_RELOC_PPC_EMB_BIT_FLD: ppc_reloc = R_PPC_EMB_BIT_FLD; break; | |
1021 | case BFD_RELOC_PPC_EMB_RELSDA: ppc_reloc = R_PPC_EMB_RELSDA; break; | |
91e32e23 UD |
1022 | case BFD_RELOC_VTABLE_INHERIT: ppc_reloc = R_PPC_GNU_VTINHERIT; break; |
1023 | case BFD_RELOC_VTABLE_ENTRY: ppc_reloc = R_PPC_GNU_VTENTRY; break; | |
ede4eed4 KR |
1024 | } |
1025 | ||
02f85cda | 1026 | return ppc_elf_howto_table[ (int)ppc_reloc ]; |
ede4eed4 KR |
1027 | }; |
1028 | ||
1029 | /* Set the howto pointer for a PowerPC ELF reloc. */ | |
1030 | ||
1031 | static void | |
1032 | ppc_elf_info_to_howto (abfd, cache_ptr, dst) | |
1033 | bfd *abfd; | |
1034 | arelent *cache_ptr; | |
1035 | Elf32_Internal_Rela *dst; | |
1036 | { | |
1037 | if (!ppc_elf_howto_table[ R_PPC_ADDR32 ]) /* Initialize howto table if needed */ | |
1038 | ppc_elf_howto_init (); | |
1039 | ||
1040 | BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max); | |
1041 | cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)]; | |
1042 | } | |
1043 | ||
dab45734 ILT |
1044 | /* Handle the R_PPC_ADDR16_HA reloc. */ |
1045 | ||
1046 | static bfd_reloc_status_type | |
1047 | ppc_elf_addr16_ha_reloc (abfd, reloc_entry, symbol, data, input_section, | |
1048 | output_bfd, error_message) | |
1049 | bfd *abfd; | |
1050 | arelent *reloc_entry; | |
1051 | asymbol *symbol; | |
1052 | PTR data; | |
1053 | asection *input_section; | |
1054 | bfd *output_bfd; | |
1055 | char **error_message; | |
1056 | { | |
1057 | bfd_vma relocation; | |
1058 | ||
1059 | if (output_bfd != NULL) | |
1060 | { | |
1061 | reloc_entry->address += input_section->output_offset; | |
1062 | return bfd_reloc_ok; | |
1063 | } | |
1064 | ||
1065 | if (reloc_entry->address > input_section->_cooked_size) | |
1066 | return bfd_reloc_outofrange; | |
1067 | ||
1068 | if (bfd_is_com_section (symbol->section)) | |
1069 | relocation = 0; | |
1070 | else | |
1071 | relocation = symbol->value; | |
1072 | ||
1073 | relocation += symbol->section->output_section->vma; | |
1074 | relocation += symbol->section->output_offset; | |
1075 | relocation += reloc_entry->addend; | |
1076 | ||
1077 | reloc_entry->addend += (relocation & 0x8000) << 1; | |
1078 | ||
1079 | return bfd_reloc_continue; | |
1080 | } | |
1081 | ||
ede4eed4 KR |
1082 | /* Function to set whether a module needs the -mrelocatable bit set. */ |
1083 | ||
1084 | static boolean | |
1085 | ppc_elf_set_private_flags (abfd, flags) | |
1086 | bfd *abfd; | |
1087 | flagword flags; | |
1088 | { | |
761f377f | 1089 | BFD_ASSERT (!elf_flags_init (abfd) |
ede4eed4 KR |
1090 | || elf_elfheader (abfd)->e_flags == flags); |
1091 | ||
1092 | elf_elfheader (abfd)->e_flags = flags; | |
761f377f | 1093 | elf_flags_init (abfd) = true; |
ede4eed4 KR |
1094 | return true; |
1095 | } | |
1096 | ||
1097 | /* Copy backend specific data from one object module to another */ | |
1098 | static boolean | |
1099 | ppc_elf_copy_private_bfd_data (ibfd, obfd) | |
1100 | bfd *ibfd; | |
1101 | bfd *obfd; | |
1102 | { | |
e7bab9df MM |
1103 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
1104 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
ede4eed4 KR |
1105 | return true; |
1106 | ||
761f377f | 1107 | BFD_ASSERT (!elf_flags_init (obfd) |
ede4eed4 KR |
1108 | || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags); |
1109 | ||
1110 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; | |
761f377f | 1111 | elf_flags_init (obfd) = true; |
ede4eed4 KR |
1112 | return true; |
1113 | } | |
1114 | ||
1115 | /* Merge backend specific data from an object file to the output | |
1116 | object file when linking */ | |
1117 | static boolean | |
1118 | ppc_elf_merge_private_bfd_data (ibfd, obfd) | |
1119 | bfd *ibfd; | |
1120 | bfd *obfd; | |
1121 | { | |
1122 | flagword old_flags; | |
1123 | flagword new_flags; | |
08556813 | 1124 | boolean error; |
ede4eed4 KR |
1125 | |
1126 | /* Check if we have the same endianess */ | |
07a159db MM |
1127 | if (ibfd->xvec->byteorder != obfd->xvec->byteorder |
1128 | && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) | |
ede4eed4 | 1129 | { |
91e32e23 UD |
1130 | const char *msg; |
1131 | ||
1132 | if (bfd_big_endian (ibfd)) | |
1133 | msg = _("%s: compiled for a big endian system and target is little endian"); | |
1134 | else | |
1135 | msg = _("%s: compiled for a little endian system and target is big endian"); | |
1136 | ||
1137 | (*_bfd_error_handler) (msg, bfd_get_filename (ibfd)); | |
ede4eed4 KR |
1138 | |
1139 | bfd_set_error (bfd_error_wrong_format); | |
1140 | return false; | |
1141 | } | |
1142 | ||
e7bab9df MM |
1143 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
1144 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
ede4eed4 KR |
1145 | return true; |
1146 | ||
1147 | new_flags = elf_elfheader (ibfd)->e_flags; | |
1148 | old_flags = elf_elfheader (obfd)->e_flags; | |
761f377f | 1149 | if (!elf_flags_init (obfd)) /* First call, no flags set */ |
ede4eed4 | 1150 | { |
761f377f | 1151 | elf_flags_init (obfd) = true; |
ede4eed4 KR |
1152 | elf_elfheader (obfd)->e_flags = new_flags; |
1153 | } | |
1154 | ||
1155 | else if (new_flags == old_flags) /* Compatible flags are ok */ | |
1156 | ; | |
1157 | ||
1158 | else /* Incompatible flags */ | |
1159 | { | |
dd82c578 MM |
1160 | /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib to be linked |
1161 | with either. */ | |
08556813 | 1162 | error = false; |
dd82c578 MM |
1163 | if ((new_flags & EF_PPC_RELOCATABLE) != 0 |
1164 | && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0) | |
ede4eed4 | 1165 | { |
08556813 | 1166 | error = true; |
7a7fbffb | 1167 | (*_bfd_error_handler) |
91e32e23 | 1168 | (_("%s: compiled with -mrelocatable and linked with modules compiled normally"), |
7a7fbffb | 1169 | bfd_get_filename (ibfd)); |
ede4eed4 | 1170 | } |
08eb30b6 | 1171 | else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0 |
dd82c578 | 1172 | && (old_flags & EF_PPC_RELOCATABLE) != 0) |
ede4eed4 | 1173 | { |
08556813 | 1174 | error = true; |
7a7fbffb | 1175 | (*_bfd_error_handler) |
91e32e23 | 1176 | (_("%s: compiled normally and linked with modules compiled with -mrelocatable"), |
7a7fbffb | 1177 | bfd_get_filename (ibfd)); |
ede4eed4 | 1178 | } |
e7bab9df MM |
1179 | /* If -mrelocatable-lib is linked with an object without -mrelocatable-lib, turn off |
1180 | the -mrelocatable-lib, since at least one module isn't relocatable. */ | |
1181 | else if ((old_flags & EF_PPC_RELOCATABLE_LIB) != 0 | |
1182 | && (new_flags & EF_PPC_RELOCATABLE_LIB) == 0) | |
1183 | elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB; | |
dd82c578 | 1184 | |
ede4eed4 | 1185 | |
3cbe19d2 MM |
1186 | /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if any module uses it */ |
1187 | elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB); | |
1188 | ||
1189 | new_flags &= ~ (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
1190 | old_flags &= ~ (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
ede4eed4 KR |
1191 | |
1192 | /* Warn about any other mismatches */ | |
1193 | if (new_flags != old_flags) | |
08556813 MM |
1194 | { |
1195 | error = true; | |
1196 | (*_bfd_error_handler) | |
91e32e23 | 1197 | (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"), |
08556813 MM |
1198 | bfd_get_filename (ibfd), (long)new_flags, (long)old_flags); |
1199 | } | |
ede4eed4 | 1200 | |
08556813 MM |
1201 | if (error) |
1202 | { | |
1203 | bfd_set_error (bfd_error_bad_value); | |
1204 | return false; | |
1205 | } | |
ede4eed4 KR |
1206 | } |
1207 | ||
1208 | return true; | |
1209 | } | |
1210 | ||
83f4323e MM |
1211 | \f |
1212 | /* Handle a PowerPC specific section when reading an object file. This | |
1213 | is called when elfcode.h finds a section with an unknown type. */ | |
1214 | ||
1215 | static boolean | |
1216 | ppc_elf_section_from_shdr (abfd, hdr, name) | |
1217 | bfd *abfd; | |
1218 | Elf32_Internal_Shdr *hdr; | |
1219 | char *name; | |
1220 | { | |
1221 | asection *newsect; | |
1222 | flagword flags; | |
1223 | ||
1224 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) | |
1225 | return false; | |
1226 | ||
1227 | newsect = hdr->bfd_section; | |
1228 | flags = bfd_get_section_flags (abfd, newsect); | |
1229 | if (hdr->sh_flags & SHF_EXCLUDE) | |
1230 | flags |= SEC_EXCLUDE; | |
1231 | ||
1232 | if (hdr->sh_type == SHT_ORDERED) | |
1233 | flags |= SEC_SORT_ENTRIES; | |
1234 | ||
1235 | bfd_set_section_flags (abfd, newsect, flags); | |
1236 | return true; | |
1237 | } | |
1238 | ||
57081126 MM |
1239 | \f |
1240 | /* Set up any other section flags and such that may be necessary. */ | |
1241 | ||
6717fb0d | 1242 | static boolean |
57081126 MM |
1243 | ppc_elf_fake_sections (abfd, shdr, asect) |
1244 | bfd *abfd; | |
1245 | Elf32_Internal_Shdr *shdr; | |
1246 | asection *asect; | |
1247 | { | |
1248 | if ((asect->flags & SEC_EXCLUDE) != 0) | |
1249 | shdr->sh_flags |= SHF_EXCLUDE; | |
1250 | ||
1251 | if ((asect->flags & SEC_SORT_ENTRIES) != 0) | |
1252 | shdr->sh_type = SHT_ORDERED; | |
3f7ca26b MM |
1253 | |
1254 | return true; | |
57081126 MM |
1255 | } |
1256 | ||
1c3a295b | 1257 | \f |
3b3753b8 MM |
1258 | /* Create a special linker section */ |
1259 | static elf_linker_section_t * | |
1260 | ppc_elf_create_linker_section (abfd, info, which) | |
1c3a295b MM |
1261 | bfd *abfd; |
1262 | struct bfd_link_info *info; | |
3b3753b8 | 1263 | enum elf_linker_section_enum which; |
1c3a295b | 1264 | { |
3b3753b8 MM |
1265 | bfd *dynobj = elf_hash_table (info)->dynobj; |
1266 | elf_linker_section_t *lsect; | |
1c3a295b | 1267 | |
3b3753b8 MM |
1268 | /* Record the first bfd section that needs the special section */ |
1269 | if (!dynobj) | |
1270 | dynobj = elf_hash_table (info)->dynobj = abfd; | |
1c3a295b | 1271 | |
3b3753b8 MM |
1272 | /* If this is the first time, create the section */ |
1273 | lsect = elf_linker_section (dynobj, which); | |
1274 | if (!lsect) | |
1c3a295b | 1275 | { |
3b3753b8 MM |
1276 | elf_linker_section_t defaults; |
1277 | static elf_linker_section_t zero_section; | |
1278 | ||
1279 | defaults = zero_section; | |
1280 | defaults.which = which; | |
1281 | defaults.hole_written_p = false; | |
1282 | defaults.alignment = 2; | |
91e32e23 UD |
1283 | |
1284 | /* Both of these sections are (technically) created by the user | |
1285 | putting data in them, so they shouldn't be marked | |
1286 | SEC_LINKER_CREATED. | |
1287 | ||
1288 | The linker creates them so it has somewhere to attach their | |
1289 | respective symbols. In fact, if they were empty it would | |
1290 | be OK to leave the symbol set to 0 (or any random number), because | |
1291 | the appropriate register should never be used. */ | |
ff12f303 | 1292 | defaults.flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS |
91e32e23 | 1293 | | SEC_IN_MEMORY); |
3b3753b8 MM |
1294 | |
1295 | switch (which) | |
1296 | { | |
1297 | default: | |
91e32e23 | 1298 | (*_bfd_error_handler) (_("%s: Unknown special linker type %d"), |
3b3753b8 MM |
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 | ||
3b3753b8 MM |
1305 | case LINKER_SECTION_SDATA: /* .sdata/.sbss section */ |
1306 | defaults.name = ".sdata"; | |
1307 | defaults.rel_name = ".rela.sdata"; | |
1308 | defaults.bss_name = ".sbss"; | |
1309 | defaults.sym_name = "_SDA_BASE_"; | |
05f927dd | 1310 | defaults.sym_offset = 32768; |
3b3753b8 MM |
1311 | break; |
1312 | ||
1313 | case LINKER_SECTION_SDATA2: /* .sdata2/.sbss2 section */ | |
1314 | defaults.name = ".sdata2"; | |
1315 | defaults.rel_name = ".rela.sdata2"; | |
1316 | defaults.bss_name = ".sbss2"; | |
1317 | defaults.sym_name = "_SDA2_BASE_"; | |
05f927dd | 1318 | defaults.sym_offset = 32768; |
3f7ca26b | 1319 | defaults.flags |= SEC_READONLY; |
3b3753b8 MM |
1320 | break; |
1321 | } | |
1322 | ||
1323 | lsect = _bfd_elf_create_linker_section (abfd, info, which, &defaults); | |
1c3a295b MM |
1324 | } |
1325 | ||
3b3753b8 | 1326 | return lsect; |
1c3a295b MM |
1327 | } |
1328 | ||
3f7ca26b MM |
1329 | \f |
1330 | /* If we have a non-zero sized .sbss2 or .PPC.EMB.sbss0 sections, we need to bump up | |
1331 | the number of section headers. */ | |
1332 | ||
1333 | static int | |
1334 | ppc_elf_additional_program_headers (abfd) | |
1335 | bfd *abfd; | |
1336 | { | |
1337 | asection *s; | |
1338 | int ret; | |
1339 | ||
1340 | ret = 0; | |
1341 | ||
1342 | s = bfd_get_section_by_name (abfd, ".interp"); | |
1343 | if (s != NULL) | |
1344 | ++ret; | |
1345 | ||
1346 | s = bfd_get_section_by_name (abfd, ".sbss2"); | |
1347 | if (s != NULL && (s->flags & SEC_LOAD) != 0 && s->_raw_size > 0) | |
1348 | ++ret; | |
1349 | ||
1350 | s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0"); | |
1351 | if (s != NULL && (s->flags & SEC_LOAD) != 0 && s->_raw_size > 0) | |
1352 | ++ret; | |
1353 | ||
1354 | return ret; | |
1355 | } | |
1356 | ||
1357 | /* Modify the segment map if needed */ | |
1358 | ||
1359 | static boolean | |
1360 | ppc_elf_modify_segment_map (abfd) | |
1361 | bfd *abfd; | |
1362 | { | |
1363 | return true; | |
1364 | } | |
08556813 | 1365 | \f |
91e32e23 UD |
1366 | /* We have to create .dynsbss and .rela.sbss here so that they get mapped |
1367 | to output sections (just like _bfd_elf_create_dynamic_sections has | |
1368 | to create .dynbss and .rela.bss). */ | |
1369 | ||
1370 | static boolean | |
1371 | ppc_elf_create_dynamic_sections (abfd, info) | |
1372 | bfd *abfd; | |
1373 | struct bfd_link_info *info; | |
1374 | { | |
1375 | register asection *s; | |
1376 | flagword flags; | |
1377 | ||
1378 | if (!_bfd_elf_create_dynamic_sections(abfd, info)) | |
1379 | return false; | |
1380 | ||
1381 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
1382 | | SEC_LINKER_CREATED); | |
1383 | ||
1384 | s = bfd_make_section (abfd, ".dynsbss"); | |
1385 | if (s == NULL | |
1386 | || ! bfd_set_section_flags (abfd, s, SEC_ALLOC)) | |
1387 | return false; | |
1388 | ||
1389 | if (! info->shared) | |
1390 | { | |
1391 | s = bfd_make_section (abfd, ".rela.sbss"); | |
1392 | if (s == NULL | |
1393 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) | |
1394 | || ! bfd_set_section_alignment (abfd, s, 2)) | |
1395 | return false; | |
1396 | } | |
1397 | return true; | |
1398 | } | |
1399 | ||
08556813 MM |
1400 | /* Adjust a symbol defined by a dynamic object and referenced by a |
1401 | regular object. The current definition is in some section of the | |
1402 | dynamic object, but we're not including those sections. We have to | |
1403 | change the definition to something the rest of the link can | |
1404 | understand. */ | |
1405 | ||
1406 | static boolean | |
1407 | ppc_elf_adjust_dynamic_symbol (info, h) | |
1408 | struct bfd_link_info *info; | |
1409 | struct elf_link_hash_entry *h; | |
1410 | { | |
3f7ca26b MM |
1411 | bfd *dynobj = elf_hash_table (info)->dynobj; |
1412 | asection *s; | |
1413 | unsigned int power_of_two; | |
1414 | bfd_vma plt_offset; | |
1415 | ||
08556813 | 1416 | #ifdef DEBUG |
3f7ca26b | 1417 | fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n", h->root.root.string); |
08556813 | 1418 | #endif |
3f7ca26b MM |
1419 | |
1420 | /* Make sure we know what is going on here. */ | |
1421 | BFD_ASSERT (dynobj != NULL | |
1422 | && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) | |
1423 | || h->weakdef != NULL | |
1424 | || ((h->elf_link_hash_flags | |
1425 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
1426 | && (h->elf_link_hash_flags | |
1427 | & ELF_LINK_HASH_REF_REGULAR) != 0 | |
1428 | && (h->elf_link_hash_flags | |
1429 | & ELF_LINK_HASH_DEF_REGULAR) == 0))); | |
1430 | ||
1431 | ||
1432 | /* If this is a function, put it in the procedure linkage table. We | |
1433 | will fill in the contents of the procedure linkage table later, | |
1434 | when we know the address of the .got section. */ | |
1435 | if (h->type == STT_FUNC | |
1436 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
1437 | { | |
1438 | if (! info->shared | |
1439 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0 | |
1440 | && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0) | |
1441 | { | |
1442 | /* This case can occur if we saw a PLT32 reloc in an input | |
1443 | file, but the symbol was never referred to by a dynamic | |
1444 | object. In such a case, we don't actually need to build | |
1445 | a procedure linkage table, and we can just do a PC32 | |
1446 | reloc instead. */ | |
1447 | BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0); | |
1448 | return true; | |
1449 | } | |
1450 | ||
91e32e23 UD |
1451 | /* GC may have rendered this entry unused. Note, however, that in |
1452 | an executable all references to the symbol go to the PLT, so we | |
1453 | can't turn it off in that case. | |
1454 | ??? The correct thing to do here is to reference count all uses | |
1455 | of the symbol, not just those to the GOT or PLT. */ | |
1456 | ||
1457 | if (h->plt.refcount <= 0 && info->shared) | |
1458 | { | |
1459 | h->plt.offset = (bfd_vma) -1; | |
1460 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
1461 | return true; | |
1462 | } | |
1463 | ||
3f7ca26b MM |
1464 | /* Make sure this symbol is output as a dynamic symbol. */ |
1465 | if (h->dynindx == -1) | |
1466 | { | |
1467 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
1468 | return false; | |
1469 | } | |
91e32e23 | 1470 | BFD_ASSERT (h->dynindx != -1); |
3f7ca26b MM |
1471 | |
1472 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
1473 | BFD_ASSERT (s != NULL); | |
1474 | ||
1475 | /* If this is the first .plt entry, make room for the special | |
1476 | first entry. */ | |
1477 | if (s->_raw_size == 0) | |
1478 | s->_raw_size += PLT_INITIAL_ENTRY_SIZE; | |
1479 | ||
1480 | /* The PowerPC PLT is actually composed of two parts, the first part | |
1481 | is 2 words (for a load and a jump), and then there is a remaining | |
1482 | word available at the end. */ | |
1483 | plt_offset = (PLT_INITIAL_ENTRY_SIZE | |
1484 | + 8 * ((s->_raw_size - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE)); | |
1485 | ||
1486 | /* If this symbol is not defined in a regular file, and we are | |
1487 | not generating a shared library, then set the symbol to this | |
1488 | location in the .plt. This is required to make function | |
1489 | pointers compare as equal between the normal executable and | |
1490 | the shared library. */ | |
1491 | if (! info->shared | |
1492 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
1493 | { | |
1494 | h->root.u.def.section = s; | |
1495 | h->root.u.def.value = plt_offset; | |
1496 | } | |
1497 | ||
91e32e23 | 1498 | h->plt.offset = plt_offset; |
3f7ca26b MM |
1499 | |
1500 | /* Make room for this entry. */ | |
1501 | s->_raw_size += PLT_ENTRY_SIZE; | |
1502 | ||
1503 | /* We also need to make an entry in the .rela.plt section. */ | |
3f7ca26b MM |
1504 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); |
1505 | BFD_ASSERT (s != NULL); | |
1506 | s->_raw_size += sizeof (Elf32_External_Rela); | |
1507 | ||
1508 | return true; | |
1509 | } | |
1510 | ||
1511 | /* If this is a weak symbol, and there is a real definition, the | |
1512 | processor independent code will have arranged for us to see the | |
1513 | real definition first, and we can just use the same value. */ | |
1514 | if (h->weakdef != NULL) | |
1515 | { | |
1516 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
1517 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
1518 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
1519 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
1520 | return true; | |
1521 | } | |
1522 | ||
1523 | /* This is a reference to a symbol defined by a dynamic object which | |
1524 | is not a function. */ | |
1525 | ||
1526 | /* If we are creating a shared library, we must presume that the | |
1527 | only references to the symbol are via the global offset table. | |
1528 | For such cases we need not do anything here; the relocations will | |
1529 | be handled correctly by relocate_section. */ | |
1530 | if (info->shared) | |
1531 | return true; | |
1532 | ||
1533 | /* We must allocate the symbol in our .dynbss section, which will | |
1534 | become part of the .bss section of the executable. There will be | |
1535 | an entry for this symbol in the .dynsym section. The dynamic | |
1536 | object will contain position independent code, so all references | |
1537 | from the dynamic object to this symbol will go through the global | |
1538 | offset table. The dynamic linker will use the .dynsym entry to | |
1539 | determine the address it must put in the global offset table, so | |
1540 | both the dynamic object and the regular object will refer to the | |
91e32e23 | 1541 | same memory location for the variable. |
3f7ca26b | 1542 | |
91e32e23 UD |
1543 | Of course, if the symbol is sufficiently small, we must instead |
1544 | allocate it in .sbss. FIXME: It would be better to do this if and | |
1545 | only if there were actually SDAREL relocs for that symbol. */ | |
1546 | ||
1547 | if (h->size <= elf_gp_size (dynobj)) | |
1548 | s = bfd_get_section_by_name (dynobj, ".dynsbss"); | |
1549 | else | |
1550 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
3f7ca26b MM |
1551 | BFD_ASSERT (s != NULL); |
1552 | ||
acba322e MM |
1553 | /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to |
1554 | copy the initial value out of the dynamic object and into the | |
1555 | runtime process image. We need to remember the offset into the | |
1556 | .rela.bss section we are going to use. */ | |
1557 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
3f7ca26b MM |
1558 | { |
1559 | asection *srel; | |
1560 | ||
91e32e23 UD |
1561 | if (h->size <= elf_gp_size (dynobj)) |
1562 | srel = bfd_get_section_by_name (dynobj, ".rela.sbss"); | |
1563 | else | |
1564 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
3f7ca26b | 1565 | BFD_ASSERT (srel != NULL); |
b6eb341b | 1566 | srel->_raw_size += sizeof (Elf32_External_Rela); |
3f7ca26b MM |
1567 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; |
1568 | } | |
1569 | ||
1570 | /* We need to figure out the alignment required for this symbol. I | |
1571 | have no idea how ELF linkers handle this. */ | |
1572 | power_of_two = bfd_log2 (h->size); | |
91e32e23 UD |
1573 | if (power_of_two > 4) |
1574 | power_of_two = 4; | |
3f7ca26b MM |
1575 | |
1576 | /* Apply the required alignment. */ | |
1577 | s->_raw_size = BFD_ALIGN (s->_raw_size, | |
1578 | (bfd_size_type) (1 << power_of_two)); | |
1579 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) | |
1580 | { | |
1581 | if (! bfd_set_section_alignment (dynobj, s, power_of_two)) | |
1582 | return false; | |
1583 | } | |
1584 | ||
1585 | /* Define the symbol as being at this point in the section. */ | |
1586 | h->root.u.def.section = s; | |
1587 | h->root.u.def.value = s->_raw_size; | |
1588 | ||
1589 | /* Increment the section size to make room for the symbol. */ | |
1590 | s->_raw_size += h->size; | |
1591 | ||
08556813 MM |
1592 | return true; |
1593 | } | |
1594 | ||
1595 | \f | |
1596 | /* Increment the index of a dynamic symbol by a given amount. Called | |
1597 | via elf_link_hash_traverse. */ | |
1598 | ||
1599 | static boolean | |
1600 | ppc_elf_adjust_dynindx (h, cparg) | |
1601 | struct elf_link_hash_entry *h; | |
1602 | PTR cparg; | |
1603 | { | |
1604 | int *cp = (int *) cparg; | |
1605 | ||
1606 | #ifdef DEBUG | |
1607 | fprintf (stderr, "ppc_elf_adjust_dynindx called, h->dynindx = %d, *cp = %d\n", h->dynindx, *cp); | |
1608 | #endif | |
1609 | ||
1610 | if (h->dynindx != -1) | |
1611 | h->dynindx += *cp; | |
1612 | ||
1613 | return true; | |
1614 | } | |
1615 | ||
1616 | \f | |
1617 | /* Set the sizes of the dynamic sections. */ | |
1618 | ||
1619 | static boolean | |
1620 | ppc_elf_size_dynamic_sections (output_bfd, info) | |
1621 | bfd *output_bfd; | |
1622 | struct bfd_link_info *info; | |
1623 | { | |
1624 | bfd *dynobj; | |
1625 | asection *s; | |
3f7ca26b MM |
1626 | boolean plt; |
1627 | boolean relocs; | |
08556813 | 1628 | boolean reltext; |
08556813 MM |
1629 | |
1630 | #ifdef DEBUG | |
1631 | fprintf (stderr, "ppc_elf_size_dynamic_sections called\n"); | |
1632 | #endif | |
1633 | ||
1634 | dynobj = elf_hash_table (info)->dynobj; | |
1635 | BFD_ASSERT (dynobj != NULL); | |
1636 | ||
1637 | if (elf_hash_table (info)->dynamic_sections_created) | |
1638 | { | |
1639 | /* Set the contents of the .interp section to the interpreter. */ | |
1640 | if (! info->shared) | |
1641 | { | |
1642 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
1643 | BFD_ASSERT (s != NULL); | |
1644 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; | |
1645 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
1646 | } | |
08556813 MM |
1647 | } |
1648 | else | |
1649 | { | |
3b3753b8 | 1650 | /* We may have created entries in the .rela.got, .rela.sdata, and |
e7bab9df | 1651 | .rela.sdata2 sections. However, if we are not creating the |
3b3753b8 MM |
1652 | dynamic sections, we will not actually use these entries. Reset |
1653 | the size of .rela.got, et al, which will cause it to get | |
1654 | stripped from the output file below. */ | |
91e32e23 UD |
1655 | static char *rela_sections[] = { ".rela.got", ".rela.sdata", |
1656 | ".rela.sdata2", ".rela.sbss", | |
1657 | (char *)0 }; | |
3b3753b8 MM |
1658 | char **p; |
1659 | ||
1660 | for (p = rela_sections; *p != (char *)0; p++) | |
1661 | { | |
1662 | s = bfd_get_section_by_name (dynobj, *p); | |
1663 | if (s != NULL) | |
1664 | s->_raw_size = 0; | |
1665 | } | |
08556813 MM |
1666 | } |
1667 | ||
1668 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
1669 | determined the sizes of the various dynamic sections. Allocate | |
1670 | memory for them. */ | |
3f7ca26b MM |
1671 | plt = false; |
1672 | relocs = false; | |
08556813 | 1673 | reltext = false; |
08556813 MM |
1674 | for (s = dynobj->sections; s != NULL; s = s->next) |
1675 | { | |
1676 | const char *name; | |
1677 | boolean strip; | |
1678 | ||
ff12f303 | 1679 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
08556813 MM |
1680 | continue; |
1681 | ||
1682 | /* It's OK to base decisions on the section name, because none | |
1683 | of the dynobj section names depend upon the input files. */ | |
1684 | name = bfd_get_section_name (dynobj, s); | |
1685 | ||
1686 | strip = false; | |
1687 | ||
3f7ca26b MM |
1688 | if (strcmp (name, ".plt") == 0) |
1689 | { | |
1690 | if (s->_raw_size == 0) | |
1691 | { | |
1692 | /* Strip this section if we don't need it; see the | |
1693 | comment below. */ | |
1694 | strip = true; | |
1695 | } | |
1696 | else | |
1697 | { | |
1698 | /* Remember whether there is a PLT. */ | |
1699 | plt = true; | |
1700 | } | |
1701 | } | |
1702 | else if (strncmp (name, ".rela", 5) == 0) | |
08556813 MM |
1703 | { |
1704 | if (s->_raw_size == 0) | |
1705 | { | |
1706 | /* If we don't need this section, strip it from the | |
3f7ca26b MM |
1707 | output file. This is mostly to handle .rela.bss and |
1708 | .rela.plt. We must create both sections in | |
1709 | create_dynamic_sections, because they must be created | |
08556813 MM |
1710 | before the linker maps input sections to output |
1711 | sections. The linker does that before | |
1712 | adjust_dynamic_symbol is called, and it is that | |
1713 | function which decides whether anything needs to go | |
1714 | into these sections. */ | |
1715 | strip = true; | |
1716 | } | |
1717 | else | |
1718 | { | |
1719 | asection *target; | |
b6eb341b | 1720 | const char *outname; |
08556813 | 1721 | |
b6eb341b ILT |
1722 | /* Remember whether there are any relocation sections. */ |
1723 | relocs = true; | |
1724 | ||
1725 | /* If this relocation section applies to a read only | |
1726 | section, then we probably need a DT_TEXTREL entry. */ | |
1727 | outname = bfd_get_section_name (output_bfd, | |
1728 | s->output_section); | |
1729 | target = bfd_get_section_by_name (output_bfd, outname + 5); | |
1730 | if (target != NULL | |
91e32e23 UD |
1731 | && (target->flags & SEC_READONLY) != 0 |
1732 | && (target->flags & SEC_ALLOC) != 0) | |
b6eb341b | 1733 | reltext = true; |
08556813 MM |
1734 | |
1735 | /* We use the reloc_count field as a counter if we need | |
1736 | to copy relocs into the output file. */ | |
1737 | s->reloc_count = 0; | |
1738 | } | |
1739 | } | |
3f7ca26b MM |
1740 | else if (strcmp (name, ".got") != 0 |
1741 | && strcmp (name, ".sdata") != 0 | |
1742 | && strcmp (name, ".sdata2") != 0) | |
08556813 MM |
1743 | { |
1744 | /* It's not one of our sections, so don't allocate space. */ | |
1745 | continue; | |
1746 | } | |
1747 | ||
1748 | if (strip) | |
1749 | { | |
1750 | asection **spp; | |
1751 | ||
1752 | for (spp = &s->output_section->owner->sections; | |
1753 | *spp != s->output_section; | |
1754 | spp = &(*spp)->next) | |
1755 | ; | |
1756 | *spp = s->output_section->next; | |
1757 | --s->output_section->owner->section_count; | |
1758 | ||
1759 | continue; | |
1760 | } | |
1761 | ||
1762 | /* Allocate memory for the section contents. */ | |
eb82bc60 | 1763 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); |
08556813 MM |
1764 | if (s->contents == NULL && s->_raw_size != 0) |
1765 | return false; | |
1766 | } | |
1767 | ||
1768 | if (elf_hash_table (info)->dynamic_sections_created) | |
1769 | { | |
1770 | /* Add some entries to the .dynamic section. We fill in the | |
1771 | values later, in ppc_elf_finish_dynamic_sections, but we | |
1772 | must add the entries now so that we get the correct size for | |
1773 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1774 | dynamic linker and used by the debugger. */ | |
1775 | if (! info->shared) | |
1776 | { | |
1777 | if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0)) | |
1778 | return false; | |
1779 | } | |
1780 | ||
3f7ca26b | 1781 | if (plt) |
08556813 | 1782 | { |
3f7ca26b MM |
1783 | if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0) |
1784 | || ! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0) | |
b6eb341b | 1785 | || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_RELA) |
08556813 MM |
1786 | || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0)) |
1787 | return false; | |
1788 | } | |
1789 | ||
3f7ca26b MM |
1790 | if (relocs) |
1791 | { | |
1792 | if (! bfd_elf32_add_dynamic_entry (info, DT_RELA, 0) | |
b6eb341b ILT |
1793 | || ! bfd_elf32_add_dynamic_entry (info, DT_RELASZ, 0) |
1794 | || ! bfd_elf32_add_dynamic_entry (info, DT_RELAENT, | |
3f7ca26b MM |
1795 | sizeof (Elf32_External_Rela))) |
1796 | return false; | |
1797 | } | |
08556813 MM |
1798 | |
1799 | if (reltext) | |
1800 | { | |
1801 | if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0)) | |
1802 | return false; | |
1803 | } | |
1804 | } | |
1805 | ||
1806 | /* If we are generating a shared library, we generate a section | |
1807 | symbol for each output section. These are local symbols, which | |
1808 | means that they must come first in the dynamic symbol table. | |
1809 | That means we must increment the dynamic symbol index of every | |
91e32e23 | 1810 | other dynamic symbol. |
b6eb341b ILT |
1811 | |
1812 | FIXME: We assume that there will never be relocations to | |
1813 | locations in linker-created sections that do not have | |
1814 | externally-visible names. Instead, we should work out precisely | |
1815 | which sections relocations are targetted at. */ | |
08556813 MM |
1816 | if (info->shared) |
1817 | { | |
91e32e23 | 1818 | int c; |
08556813 | 1819 | |
b6eb341b ILT |
1820 | for (c = 0, s = output_bfd->sections; s != NULL; s = s->next) |
1821 | { | |
91e32e23 UD |
1822 | if ((s->flags & SEC_LINKER_CREATED) != 0 |
1823 | || (s->flags & SEC_ALLOC) == 0) | |
1824 | { | |
1825 | elf_section_data (s)->dynindx = -1; | |
1826 | continue; | |
1827 | } | |
1828 | ||
1829 | /* These symbols will have no names, so we don't need to | |
1830 | fiddle with dynstr_index. */ | |
1831 | ||
1832 | elf_section_data (s)->dynindx = c + 1; | |
1833 | ||
b6eb341b ILT |
1834 | c++; |
1835 | } | |
1836 | ||
08556813 MM |
1837 | elf_link_hash_traverse (elf_hash_table (info), |
1838 | ppc_elf_adjust_dynindx, | |
1839 | (PTR) &c); | |
1840 | elf_hash_table (info)->dynsymcount += c; | |
08556813 MM |
1841 | } |
1842 | ||
1843 | return true; | |
1844 | } | |
1845 | ||
1846 | \f | |
1847 | /* Look through the relocs for a section during the first phase, and | |
1848 | allocate space in the global offset table or procedure linkage | |
1849 | table. */ | |
1850 | ||
1851 | static boolean | |
1852 | ppc_elf_check_relocs (abfd, info, sec, relocs) | |
1853 | bfd *abfd; | |
1854 | struct bfd_link_info *info; | |
1855 | asection *sec; | |
1856 | const Elf_Internal_Rela *relocs; | |
1857 | { | |
1858 | bfd *dynobj; | |
1859 | Elf_Internal_Shdr *symtab_hdr; | |
91e32e23 | 1860 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; |
08556813 MM |
1861 | const Elf_Internal_Rela *rel; |
1862 | const Elf_Internal_Rela *rel_end; | |
91e32e23 | 1863 | bfd_signed_vma *local_got_refcounts; |
3b3753b8 MM |
1864 | elf_linker_section_t *sdata; |
1865 | elf_linker_section_t *sdata2; | |
08556813 | 1866 | asection *sreloc; |
b6eb341b ILT |
1867 | asection *sgot; |
1868 | asection *srelgot = NULL; | |
08556813 MM |
1869 | |
1870 | if (info->relocateable) | |
1871 | return true; | |
1872 | ||
1873 | #ifdef DEBUG | |
3f7ca26b MM |
1874 | fprintf (stderr, "ppc_elf_check_relocs called for section %s in %s\n", |
1875 | bfd_get_section_name (abfd, sec), | |
1876 | bfd_get_filename (abfd)); | |
08556813 MM |
1877 | #endif |
1878 | ||
acba322e | 1879 | /* Create the linker generated sections all the time so that the |
b6eb341b | 1880 | special symbols are created. */ |
3f7ca26b | 1881 | |
3b3753b8 MM |
1882 | if ((sdata = elf_linker_section (abfd, LINKER_SECTION_SDATA)) == NULL) |
1883 | { | |
1884 | sdata = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA); | |
1885 | if (!sdata) | |
91e32e23 | 1886 | return false; |
3b3753b8 MM |
1887 | } |
1888 | ||
1889 | ||
1890 | if ((sdata2 = elf_linker_section (abfd, LINKER_SECTION_SDATA2)) == NULL) | |
1891 | { | |
1892 | sdata2 = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA2); | |
1893 | if (!sdata2) | |
91e32e23 | 1894 | return false; |
3b3753b8 MM |
1895 | } |
1896 | ||
08556813 MM |
1897 | dynobj = elf_hash_table (info)->dynobj; |
1898 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
91e32e23 | 1899 | local_got_refcounts = elf_local_got_refcounts (abfd); |
b6eb341b | 1900 | |
91e32e23 UD |
1901 | sym_hashes = elf_sym_hashes (abfd); |
1902 | sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof(Elf32_External_Sym); | |
1903 | if (!elf_bad_symtab (abfd)) | |
1904 | sym_hashes_end -= symtab_hdr->sh_info; | |
b6eb341b | 1905 | |
08556813 MM |
1906 | sreloc = NULL; |
1907 | ||
1908 | rel_end = relocs + sec->reloc_count; | |
1909 | for (rel = relocs; rel < rel_end; rel++) | |
1910 | { | |
1911 | unsigned long r_symndx; | |
1912 | struct elf_link_hash_entry *h; | |
1913 | ||
1914 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1915 | if (r_symndx < symtab_hdr->sh_info) | |
1916 | h = NULL; | |
1917 | else | |
1918 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1919 | ||
1920 | switch (ELF32_R_TYPE (rel->r_info)) | |
1921 | { | |
3b3753b8 | 1922 | /* GOT16 relocations */ |
08556813 MM |
1923 | case R_PPC_GOT16: |
1924 | case R_PPC_GOT16_LO: | |
1925 | case R_PPC_GOT16_HI: | |
1926 | case R_PPC_GOT16_HA: | |
91e32e23 UD |
1927 | /* This symbol requires a global offset table entry. */ |
1928 | ||
1929 | if (sgot == NULL) | |
1930 | { | |
1931 | if (dynobj == NULL) | |
1932 | { | |
1933 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
1934 | if (! _bfd_elf_create_got_section (dynobj, info)) | |
1935 | return false; | |
1936 | } | |
1937 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1938 | BFD_ASSERT (sgot != NULL); | |
1939 | } | |
1940 | ||
b6eb341b ILT |
1941 | if (srelgot == NULL |
1942 | && (h != NULL || info->shared)) | |
e25a7988 | 1943 | { |
b6eb341b ILT |
1944 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); |
1945 | if (srelgot == NULL) | |
1946 | { | |
1947 | srelgot = bfd_make_section (dynobj, ".rela.got"); | |
1948 | if (srelgot == NULL | |
1949 | || ! bfd_set_section_flags (dynobj, srelgot, | |
1950 | (SEC_ALLOC | |
1951 | | SEC_LOAD | |
1952 | | SEC_HAS_CONTENTS | |
1953 | | SEC_IN_MEMORY | |
1954 | | SEC_LINKER_CREATED | |
1955 | | SEC_READONLY)) | |
1956 | || ! bfd_set_section_alignment (dynobj, srelgot, 2)) | |
1957 | return false; | |
1958 | } | |
e25a7988 | 1959 | } |
1c3a295b | 1960 | |
b6eb341b ILT |
1961 | if (h != NULL) |
1962 | { | |
91e32e23 | 1963 | if (h->got.refcount == -1) |
b6eb341b | 1964 | { |
91e32e23 UD |
1965 | /* Make sure this symbol is output as a dynamic symbol. */ |
1966 | if (h->dynindx == -1) | |
1967 | if (!bfd_elf32_link_record_dynamic_symbol (info, h)) | |
1968 | return false; | |
1969 | ||
1970 | /* Allocate space in the .got. */ | |
1971 | sgot->_raw_size += 4; | |
1972 | /* Allocate relocation space. */ | |
1973 | srelgot->_raw_size += sizeof (Elf32_External_Rela); | |
b6eb341b | 1974 | |
91e32e23 | 1975 | h->got.refcount = 1; |
b6eb341b | 1976 | } |
91e32e23 UD |
1977 | else |
1978 | h->got.refcount++; | |
b6eb341b ILT |
1979 | } |
1980 | else | |
1981 | { | |
91e32e23 UD |
1982 | /* This is a global offset table entry for a local symbol. */ |
1983 | if (local_got_refcounts == NULL) | |
b6eb341b ILT |
1984 | { |
1985 | size_t size; | |
1986 | register unsigned int i; | |
1987 | ||
91e32e23 UD |
1988 | size = symtab_hdr->sh_info * sizeof (bfd_signed_vma); |
1989 | local_got_refcounts = (bfd_signed_vma *) | |
1990 | bfd_alloc (abfd, size); | |
1991 | if (local_got_refcounts == NULL) | |
b6eb341b | 1992 | return false; |
91e32e23 UD |
1993 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
1994 | memset (local_got_refcounts, -1, size); | |
b6eb341b | 1995 | } |
91e32e23 | 1996 | if (local_got_refcounts[r_symndx] == -1) |
b6eb341b | 1997 | { |
91e32e23 | 1998 | sgot->_raw_size += 4; |
b6eb341b | 1999 | |
b6eb341b ILT |
2000 | /* If we are generating a shared object, we need to |
2001 | output a R_PPC_RELATIVE reloc so that the | |
2002 | dynamic linker can adjust this GOT entry. */ | |
91e32e23 UD |
2003 | if (info->shared) |
2004 | srelgot->_raw_size += sizeof (Elf32_External_Rela); | |
2005 | ||
2006 | local_got_refcounts[r_symndx] = 1; | |
b6eb341b | 2007 | } |
91e32e23 UD |
2008 | else |
2009 | local_got_refcounts[r_symndx]++; | |
b6eb341b | 2010 | } |
3b3753b8 | 2011 | break; |
08556813 | 2012 | |
3b3753b8 MM |
2013 | /* Indirect .sdata relocation */ |
2014 | case R_PPC_EMB_SDAI16: | |
e25a7988 MM |
2015 | if (info->shared) |
2016 | { | |
91e32e23 UD |
2017 | ((*_bfd_error_handler) |
2018 | (_("%s: relocation %s cannot be used when making a shared object"), | |
2019 | bfd_get_filename (abfd), "R_PPC_EMB_SDAI16")); | |
2020 | return false; | |
e25a7988 MM |
2021 | } |
2022 | ||
91e32e23 | 2023 | if (srelgot == NULL && (h != NULL || info->shared)) |
acba322e | 2024 | { |
b6eb341b ILT |
2025 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); |
2026 | if (srelgot == NULL) | |
acba322e | 2027 | { |
b6eb341b ILT |
2028 | srelgot = bfd_make_section (dynobj, ".rela.got"); |
2029 | if (srelgot == NULL | |
2030 | || ! bfd_set_section_flags (dynobj, srelgot, | |
2031 | (SEC_ALLOC | |
2032 | | SEC_LOAD | |
2033 | | SEC_HAS_CONTENTS | |
2034 | | SEC_IN_MEMORY | |
2035 | | SEC_LINKER_CREATED | |
2036 | | SEC_READONLY)) | |
2037 | || ! bfd_set_section_alignment (dynobj, srelgot, 2)) | |
2038 | return false; | |
acba322e MM |
2039 | } |
2040 | } | |
2041 | ||
3b3753b8 | 2042 | if (!bfd_elf32_create_pointer_linker_section (abfd, info, sdata, h, rel)) |
91e32e23 | 2043 | return false; |
08556813 | 2044 | |
3b3753b8 | 2045 | break; |
08556813 | 2046 | |
3b3753b8 MM |
2047 | /* Indirect .sdata2 relocation */ |
2048 | case R_PPC_EMB_SDA2I16: | |
e25a7988 MM |
2049 | if (info->shared) |
2050 | { | |
91e32e23 UD |
2051 | ((*_bfd_error_handler) |
2052 | (_("%s: relocation %s cannot be used when making a shared object"), | |
2053 | bfd_get_filename (abfd), "R_PPC_EMB_SDA2I16")); | |
2054 | return false; | |
e25a7988 MM |
2055 | } |
2056 | ||
91e32e23 | 2057 | if (srelgot == NULL && (h != NULL || info->shared)) |
acba322e | 2058 | { |
b6eb341b ILT |
2059 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); |
2060 | if (srelgot == NULL) | |
acba322e | 2061 | { |
b6eb341b ILT |
2062 | srelgot = bfd_make_section (dynobj, ".rela.got"); |
2063 | if (srelgot == NULL | |
2064 | || ! bfd_set_section_flags (dynobj, srelgot, | |
2065 | (SEC_ALLOC | |
2066 | | SEC_LOAD | |
2067 | | SEC_HAS_CONTENTS | |
2068 | | SEC_IN_MEMORY | |
2069 | | SEC_LINKER_CREATED | |
2070 | | SEC_READONLY)) | |
2071 | || ! bfd_set_section_alignment (dynobj, srelgot, 2)) | |
2072 | return false; | |
acba322e MM |
2073 | } |
2074 | } | |
2075 | ||
3b3753b8 MM |
2076 | if (!bfd_elf32_create_pointer_linker_section (abfd, info, sdata2, h, rel)) |
2077 | return false; | |
08556813 MM |
2078 | |
2079 | break; | |
2080 | ||
e25a7988 MM |
2081 | case R_PPC_SDAREL16: |
2082 | case R_PPC_EMB_SDA2REL: | |
2083 | case R_PPC_EMB_SDA21: | |
2084 | if (info->shared) | |
2085 | { | |
91e32e23 UD |
2086 | ((*_bfd_error_handler) |
2087 | (_("%s: relocation %s cannot be used when making a shared object"), | |
2088 | bfd_get_filename (abfd), | |
2089 | ppc_elf_howto_table[(int)ELF32_R_TYPE (rel->r_info)]->name)); | |
2090 | return false; | |
e25a7988 MM |
2091 | } |
2092 | break; | |
2093 | ||
08556813 MM |
2094 | case R_PPC_PLT32: |
2095 | case R_PPC_PLTREL24: | |
2096 | case R_PPC_PLT16_LO: | |
2097 | case R_PPC_PLT16_HI: | |
2098 | case R_PPC_PLT16_HA: | |
2099 | #ifdef DEBUG | |
2100 | fprintf (stderr, "Reloc requires a PLT entry\n"); | |
2101 | #endif | |
2102 | /* This symbol requires a procedure linkage table entry. We | |
2103 | actually build the entry in adjust_dynamic_symbol, | |
2104 | because this might be a case of linking PIC code without | |
2105 | linking in any dynamic objects, in which case we don't | |
2106 | need to generate a procedure linkage table after all. */ | |
2107 | ||
2108 | if (h == NULL) | |
2109 | { | |
2110 | /* It does not make sense to have a procedure linkage | |
2111 | table entry for a local symbol. */ | |
2112 | bfd_set_error (bfd_error_bad_value); | |
91e32e23 | 2113 | return false; |
08556813 MM |
2114 | } |
2115 | ||
2116 | /* Make sure this symbol is output as a dynamic symbol. */ | |
2117 | if (h->dynindx == -1) | |
2118 | { | |
2119 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
91e32e23 | 2120 | return false; |
08556813 | 2121 | } |
91e32e23 UD |
2122 | if (h->plt.refcount == -1) |
2123 | { | |
2124 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
2125 | h->plt.refcount = 1; | |
2126 | } | |
2127 | else | |
2128 | h->plt.refcount++; | |
08556813 MM |
2129 | break; |
2130 | ||
b6eb341b ILT |
2131 | /* The following relocations don't need to propagate the |
2132 | relocation if linking a shared object since they are | |
2133 | section relative. */ | |
e25a7988 MM |
2134 | case R_PPC_SECTOFF: |
2135 | case R_PPC_SECTOFF_LO: | |
2136 | case R_PPC_SECTOFF_HI: | |
2137 | case R_PPC_SECTOFF_HA: | |
2138 | break; | |
2139 | ||
e7bab9df MM |
2140 | /* This refers only to functions defined in the shared library */ |
2141 | case R_PPC_LOCAL24PC: | |
2142 | break; | |
2143 | ||
91e32e23 UD |
2144 | /* This relocation describes the C++ object vtable hierarchy. |
2145 | Reconstruct it for later use during GC. */ | |
2146 | case R_PPC_GNU_VTINHERIT: | |
2147 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
2148 | return false; | |
2149 | break; | |
2150 | ||
2151 | /* This relocation describes which C++ vtable entries are actually | |
2152 | used. Record for later use during GC. */ | |
2153 | case R_PPC_GNU_VTENTRY: | |
2154 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
2155 | return false; | |
2156 | break; | |
2157 | ||
e25a7988 MM |
2158 | /* When creating a shared object, we must copy these |
2159 | relocs into the output file. We create a reloc | |
2160 | section in dynobj and make room for the reloc. */ | |
2161 | case R_PPC_REL24: | |
e25a7988 MM |
2162 | case R_PPC_REL14: |
2163 | case R_PPC_REL14_BRTAKEN: | |
2164 | case R_PPC_REL14_BRNTAKEN: | |
91e32e23 UD |
2165 | case R_PPC_REL32: |
2166 | if (h == NULL | |
2167 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
08556813 | 2168 | break; |
0293d5b0 | 2169 | /* fall through */ |
e25a7988 MM |
2170 | |
2171 | default: | |
b6eb341b | 2172 | if (info->shared) |
08556813 | 2173 | { |
e7bab9df MM |
2174 | #ifdef DEBUG |
2175 | fprintf (stderr, "ppc_elf_check_relocs need to create relocation for %s\n", | |
2176 | (h && h->root.root.string) ? h->root.root.string : "<unknown>"); | |
2177 | #endif | |
08556813 MM |
2178 | if (sreloc == NULL) |
2179 | { | |
2180 | const char *name; | |
2181 | ||
2182 | name = (bfd_elf_string_from_elf_section | |
2183 | (abfd, | |
2184 | elf_elfheader (abfd)->e_shstrndx, | |
2185 | elf_section_data (sec)->rel_hdr.sh_name)); | |
2186 | if (name == NULL) | |
91e32e23 | 2187 | return false; |
08556813 MM |
2188 | |
2189 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
2190 | && strcmp (bfd_get_section_name (abfd, sec), | |
2191 | name + 5) == 0); | |
2192 | ||
2193 | sreloc = bfd_get_section_by_name (dynobj, name); | |
2194 | if (sreloc == NULL) | |
2195 | { | |
91e32e23 UD |
2196 | flagword flags; |
2197 | ||
08556813 | 2198 | sreloc = bfd_make_section (dynobj, name); |
91e32e23 UD |
2199 | flags = (SEC_HAS_CONTENTS | SEC_READONLY |
2200 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2201 | if ((sec->flags & SEC_ALLOC) != 0) | |
2202 | flags |= SEC_ALLOC | SEC_LOAD; | |
08556813 | 2203 | if (sreloc == NULL |
91e32e23 | 2204 | || ! bfd_set_section_flags (dynobj, sreloc, flags) |
08556813 | 2205 | || ! bfd_set_section_alignment (dynobj, sreloc, 2)) |
91e32e23 | 2206 | return false; |
08556813 MM |
2207 | } |
2208 | } | |
2209 | ||
2210 | sreloc->_raw_size += sizeof (Elf32_External_Rela); | |
91e32e23 UD |
2211 | |
2212 | /* FIXME: We should here do what the m68k and i386 | |
2213 | backends do: if the reloc is pc-relative, record it | |
2214 | in case it turns out that the reloc is unnecessary | |
2215 | because the symbol is forced local by versioning or | |
2216 | we are linking with -Bdynamic. Fortunately this | |
2217 | case is not frequent. */ | |
08556813 MM |
2218 | } |
2219 | ||
2220 | break; | |
08556813 MM |
2221 | } |
2222 | } | |
2223 | ||
91e32e23 UD |
2224 | return true; |
2225 | } | |
2226 | ||
2227 | /* Return the section that should be marked against GC for a given | |
2228 | relocation. */ | |
2229 | ||
2230 | static asection * | |
2231 | ppc_elf_gc_mark_hook (abfd, info, rel, h, sym) | |
2232 | bfd *abfd; | |
2233 | struct bfd_link_info *info; | |
2234 | Elf_Internal_Rela *rel; | |
2235 | struct elf_link_hash_entry *h; | |
2236 | Elf_Internal_Sym *sym; | |
2237 | { | |
2238 | if (h != NULL) | |
2239 | { | |
2240 | switch (ELF32_R_TYPE (rel->r_info)) | |
2241 | { | |
2242 | case R_PPC_GNU_VTINHERIT: | |
2243 | case R_PPC_GNU_VTENTRY: | |
2244 | break; | |
2245 | ||
2246 | default: | |
2247 | switch (h->root.type) | |
2248 | { | |
2249 | case bfd_link_hash_defined: | |
2250 | case bfd_link_hash_defweak: | |
2251 | return h->root.u.def.section; | |
2252 | ||
2253 | case bfd_link_hash_common: | |
2254 | return h->root.u.c.p->section; | |
2255 | } | |
2256 | } | |
2257 | } | |
2258 | else | |
2259 | { | |
2260 | if (!(elf_bad_symtab (abfd) | |
2261 | && ELF_ST_BIND (sym->st_info) != STB_LOCAL) | |
2262 | && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE) | |
2263 | && sym->st_shndx != SHN_COMMON)) | |
2264 | { | |
2265 | return bfd_section_from_elf_index (abfd, sym->st_shndx); | |
2266 | } | |
2267 | } | |
2268 | ||
2269 | return NULL; | |
08556813 MM |
2270 | } |
2271 | ||
91e32e23 UD |
2272 | /* Update the got entry reference counts for the section being removed. */ |
2273 | ||
2274 | static boolean | |
2275 | ppc_elf_gc_sweep_hook (abfd, info, sec, relocs) | |
2276 | bfd *abfd; | |
2277 | struct bfd_link_info *info; | |
2278 | asection *sec; | |
2279 | const Elf_Internal_Rela *relocs; | |
2280 | { | |
2281 | Elf_Internal_Shdr *symtab_hdr; | |
2282 | struct elf_link_hash_entry **sym_hashes; | |
2283 | bfd_signed_vma *local_got_refcounts; | |
2284 | const Elf_Internal_Rela *rel, *relend; | |
2285 | unsigned long r_symndx; | |
2286 | struct elf_link_hash_entry *h; | |
2287 | ||
2288 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
2289 | sym_hashes = elf_sym_hashes (abfd); | |
2290 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
2291 | ||
2292 | relend = relocs + sec->reloc_count; | |
2293 | for (rel = relocs; rel < relend; rel++) | |
2294 | switch (ELF32_R_TYPE (rel->r_info)) | |
2295 | { | |
2296 | case R_PPC_GOT16: | |
2297 | case R_PPC_GOT16_LO: | |
2298 | case R_PPC_GOT16_HI: | |
2299 | case R_PPC_GOT16_HA: | |
2300 | r_symndx = ELF32_R_SYM (rel->r_info); | |
2301 | if (r_symndx >= symtab_hdr->sh_info) | |
2302 | { | |
2303 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
2304 | if (h->got.refcount > 0) | |
2305 | h->got.refcount--; | |
2306 | } | |
2307 | else | |
2308 | { | |
2309 | if (local_got_refcounts[r_symndx] > 0) | |
2310 | local_got_refcounts[r_symndx]--; | |
2311 | } | |
2312 | break; | |
2313 | ||
2314 | case R_PPC_PLT32: | |
2315 | case R_PPC_PLTREL24: | |
2316 | case R_PPC_PLT16_LO: | |
2317 | case R_PPC_PLT16_HI: | |
2318 | case R_PPC_PLT16_HA: | |
2319 | r_symndx = ELF32_R_SYM (rel->r_info); | |
2320 | if (r_symndx >= symtab_hdr->sh_info) | |
2321 | { | |
2322 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
2323 | if (h->plt.refcount > 0) | |
2324 | h->plt.refcount--; | |
2325 | } | |
2326 | break; | |
2327 | ||
2328 | default: | |
2329 | break; | |
2330 | } | |
2331 | ||
2332 | return true; | |
2333 | } | |
9d621c7d MM |
2334 | \f |
2335 | /* Hook called by the linker routine which adds symbols from an object | |
2336 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
2337 | ||
2338 | /*ARGSUSED*/ | |
2339 | static boolean | |
2340 | ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) | |
2341 | bfd *abfd; | |
2342 | struct bfd_link_info *info; | |
2343 | const Elf_Internal_Sym *sym; | |
2344 | const char **namep; | |
2345 | flagword *flagsp; | |
2346 | asection **secp; | |
2347 | bfd_vma *valp; | |
2348 | { | |
91e32e23 UD |
2349 | if (sym->st_shndx == SHN_COMMON |
2350 | && !info->relocateable | |
2351 | && sym->st_size <= (bfd_vma) bfd_get_gp_size (abfd)) | |
9d621c7d | 2352 | { |
eb82bc60 | 2353 | /* Common symbols less than or equal to -G nn bytes are automatically |
9d621c7d | 2354 | put into .sdata. */ |
91e32e23 UD |
2355 | elf_linker_section_t *sdata |
2356 | = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA); | |
2357 | ||
9d621c7d | 2358 | if (!sdata->bss_section) |
3f7ca26b | 2359 | { |
e7bab9df MM |
2360 | /* We don't go through bfd_make_section, because we don't |
2361 | want to attach this common section to DYNOBJ. The linker | |
2362 | will move the symbols to the appropriate output section | |
2363 | when it defines common symbols. */ | |
2364 | sdata->bss_section = ((asection *) | |
2365 | bfd_zalloc (abfd, sizeof (asection))); | |
2366 | if (sdata->bss_section == NULL) | |
2367 | return false; | |
2368 | sdata->bss_section->name = sdata->bss_name; | |
2369 | sdata->bss_section->flags = SEC_IS_COMMON; | |
2370 | sdata->bss_section->output_section = sdata->bss_section; | |
2371 | sdata->bss_section->symbol = | |
2372 | (asymbol *) bfd_zalloc (abfd, sizeof (asymbol)); | |
2373 | sdata->bss_section->symbol_ptr_ptr = | |
2374 | (asymbol **) bfd_zalloc (abfd, sizeof (asymbol *)); | |
2375 | if (sdata->bss_section->symbol == NULL | |
2376 | || sdata->bss_section->symbol_ptr_ptr == NULL) | |
2377 | return false; | |
2378 | sdata->bss_section->symbol->name = sdata->bss_name; | |
2379 | sdata->bss_section->symbol->flags = BSF_SECTION_SYM; | |
2380 | sdata->bss_section->symbol->section = sdata->bss_section; | |
2381 | *sdata->bss_section->symbol_ptr_ptr = sdata->bss_section->symbol; | |
3f7ca26b MM |
2382 | } |
2383 | ||
9d621c7d | 2384 | *secp = sdata->bss_section; |
9d621c7d MM |
2385 | *valp = sym->st_size; |
2386 | } | |
2387 | ||
2388 | return true; | |
2389 | } | |
2390 | ||
08556813 MM |
2391 | \f |
2392 | /* Finish up dynamic symbol handling. We set the contents of various | |
2393 | dynamic sections here. */ | |
2394 | ||
2395 | static boolean | |
2396 | ppc_elf_finish_dynamic_symbol (output_bfd, info, h, sym) | |
2397 | bfd *output_bfd; | |
2398 | struct bfd_link_info *info; | |
2399 | struct elf_link_hash_entry *h; | |
2400 | Elf_Internal_Sym *sym; | |
2401 | { | |
2402 | bfd *dynobj; | |
2403 | ||
2404 | #ifdef DEBUG | |
91e32e23 UD |
2405 | fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s", |
2406 | h->root.root.string); | |
08556813 MM |
2407 | #endif |
2408 | ||
2409 | dynobj = elf_hash_table (info)->dynobj; | |
3b3753b8 | 2410 | BFD_ASSERT (dynobj != NULL); |
08556813 | 2411 | |
91e32e23 | 2412 | if (h->plt.offset != (bfd_vma) -1) |
08556813 MM |
2413 | { |
2414 | asection *splt; | |
2415 | asection *srela; | |
2416 | Elf_Internal_Rela rela; | |
2417 | ||
3f7ca26b | 2418 | #ifdef DEBUG |
91e32e23 | 2419 | fprintf (stderr, ", plt_offset = %d", h->plt.offset); |
3f7ca26b MM |
2420 | #endif |
2421 | ||
08556813 MM |
2422 | /* This symbol has an entry in the procedure linkage table. Set |
2423 | it up. */ | |
2424 | ||
2425 | BFD_ASSERT (h->dynindx != -1); | |
2426 | ||
2427 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
2428 | srela = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
2429 | BFD_ASSERT (splt != NULL && srela != NULL); | |
2430 | ||
b6eb341b ILT |
2431 | /* We don't need to fill in the .plt. The ppc dynamic linker |
2432 | will fill it in. */ | |
08556813 MM |
2433 | |
2434 | /* Fill in the entry in the .rela.plt section. */ | |
2435 | rela.r_offset = (splt->output_section->vma | |
2436 | + splt->output_offset | |
91e32e23 | 2437 | + h->plt.offset); |
3f7ca26b | 2438 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT); |
08556813 MM |
2439 | rela.r_addend = 0; |
2440 | bfd_elf32_swap_reloca_out (output_bfd, &rela, | |
2441 | ((Elf32_External_Rela *) srela->contents | |
91e32e23 | 2442 | + ((h->plt.offset - PLT_INITIAL_ENTRY_SIZE) / 8))); |
08556813 MM |
2443 | |
2444 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
2445 | { | |
2446 | /* Mark the symbol as undefined, rather than as defined in | |
2447 | the .plt section. Leave the value alone. */ | |
2448 | sym->st_shndx = SHN_UNDEF; | |
2449 | } | |
2450 | } | |
2451 | ||
91e32e23 | 2452 | if (h->got.offset != (bfd_vma) -1) |
b6eb341b ILT |
2453 | { |
2454 | asection *sgot; | |
2455 | asection *srela; | |
2456 | Elf_Internal_Rela rela; | |
2457 | ||
2458 | /* This symbol has an entry in the global offset table. Set it | |
2459 | up. */ | |
2460 | ||
b6eb341b ILT |
2461 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
2462 | srela = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2463 | BFD_ASSERT (sgot != NULL && srela != NULL); | |
2464 | ||
2465 | rela.r_offset = (sgot->output_section->vma | |
2466 | + sgot->output_offset | |
91e32e23 | 2467 | + (h->got.offset &~ 1)); |
b6eb341b ILT |
2468 | |
2469 | /* If this is a -Bsymbolic link, and the symbol is defined | |
2470 | locally, we just want to emit a RELATIVE reloc. The entry in | |
2471 | the global offset table will already have been initialized in | |
2472 | the relocate_section function. */ | |
2473 | if (info->shared | |
91e32e23 | 2474 | && (info->symbolic || h->dynindx == -1) |
b6eb341b | 2475 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) |
91e32e23 UD |
2476 | { |
2477 | rela.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); | |
2478 | rela.r_addend = (h->root.u.def.value | |
2479 | + h->root.u.def.section->output_section->vma | |
2480 | + h->root.u.def.section->output_offset); | |
2481 | } | |
b6eb341b ILT |
2482 | else |
2483 | { | |
91e32e23 UD |
2484 | BFD_ASSERT((h->got.offset & 1) == 0); |
2485 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); | |
b6eb341b | 2486 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_GLOB_DAT); |
91e32e23 | 2487 | rela.r_addend = 0; |
b6eb341b ILT |
2488 | } |
2489 | ||
b6eb341b ILT |
2490 | bfd_elf32_swap_reloca_out (output_bfd, &rela, |
2491 | ((Elf32_External_Rela *) srela->contents | |
2492 | + srela->reloc_count)); | |
2493 | ++srela->reloc_count; | |
2494 | } | |
2495 | ||
08556813 MM |
2496 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) |
2497 | { | |
2498 | asection *s; | |
2499 | Elf_Internal_Rela rela; | |
2500 | ||
2501 | /* This symbols needs a copy reloc. Set it up. */ | |
2502 | ||
3f7ca26b MM |
2503 | #ifdef DEBUG |
2504 | fprintf (stderr, ", copy"); | |
2505 | #endif | |
2506 | ||
08556813 MM |
2507 | BFD_ASSERT (h->dynindx != -1); |
2508 | ||
91e32e23 UD |
2509 | if (h->size <= elf_gp_size (dynobj)) |
2510 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
2511 | ".rela.sbss"); | |
2512 | else | |
2513 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
2514 | ".rela.bss"); | |
08556813 MM |
2515 | BFD_ASSERT (s != NULL); |
2516 | ||
2517 | rela.r_offset = (h->root.u.def.value | |
2518 | + h->root.u.def.section->output_section->vma | |
2519 | + h->root.u.def.section->output_offset); | |
2520 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY); | |
2521 | rela.r_addend = 0; | |
2522 | bfd_elf32_swap_reloca_out (output_bfd, &rela, | |
2523 | ((Elf32_External_Rela *) s->contents | |
2524 | + s->reloc_count)); | |
2525 | ++s->reloc_count; | |
2526 | } | |
2527 | ||
3f7ca26b MM |
2528 | #ifdef DEBUG |
2529 | fprintf (stderr, "\n"); | |
2530 | #endif | |
2531 | ||
08556813 MM |
2532 | /* Mark some specially defined symbols as absolute. */ |
2533 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
2534 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 | |
2535 | || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) | |
2536 | sym->st_shndx = SHN_ABS; | |
2537 | ||
2538 | return true; | |
2539 | } | |
2540 | ||
2541 | \f | |
2542 | /* Finish up the dynamic sections. */ | |
2543 | ||
2544 | static boolean | |
2545 | ppc_elf_finish_dynamic_sections (output_bfd, info) | |
2546 | bfd *output_bfd; | |
2547 | struct bfd_link_info *info; | |
2548 | { | |
08556813 | 2549 | asection *sdyn; |
3b3753b8 | 2550 | bfd *dynobj = elf_hash_table (info)->dynobj; |
b6eb341b | 2551 | asection *sgot = bfd_get_section_by_name (dynobj, ".got"); |
08556813 MM |
2552 | |
2553 | #ifdef DEBUG | |
2554 | fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n"); | |
2555 | #endif | |
2556 | ||
08556813 MM |
2557 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
2558 | ||
2559 | if (elf_hash_table (info)->dynamic_sections_created) | |
2560 | { | |
2561 | asection *splt; | |
2562 | Elf32_External_Dyn *dyncon, *dynconend; | |
2563 | ||
2564 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
2565 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
2566 | ||
2567 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
2568 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
2569 | for (; dyncon < dynconend; dyncon++) | |
2570 | { | |
2571 | Elf_Internal_Dyn dyn; | |
2572 | const char *name; | |
2573 | boolean size; | |
2574 | ||
2575 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
2576 | ||
2577 | switch (dyn.d_tag) | |
2578 | { | |
3f7ca26b MM |
2579 | case DT_PLTGOT: name = ".plt"; size = false; break; |
2580 | case DT_PLTRELSZ: name = ".rela.plt"; size = true; break; | |
08556813 | 2581 | case DT_JMPREL: name = ".rela.plt"; size = false; break; |
3f7ca26b | 2582 | default: name = NULL; size = false; break; |
08556813 MM |
2583 | } |
2584 | ||
2585 | if (name != NULL) | |
2586 | { | |
2587 | asection *s; | |
2588 | ||
2589 | s = bfd_get_section_by_name (output_bfd, name); | |
2590 | if (s == NULL) | |
2591 | dyn.d_un.d_val = 0; | |
2592 | else | |
2593 | { | |
2594 | if (! size) | |
2595 | dyn.d_un.d_ptr = s->vma; | |
2596 | else | |
2597 | { | |
2598 | if (s->_cooked_size != 0) | |
2599 | dyn.d_un.d_val = s->_cooked_size; | |
2600 | else | |
2601 | dyn.d_un.d_val = s->_raw_size; | |
2602 | } | |
2603 | } | |
2604 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2605 | } | |
2606 | } | |
08556813 MM |
2607 | } |
2608 | ||
3b3753b8 MM |
2609 | /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can |
2610 | easily find the address of the _GLOBAL_OFFSET_TABLE_. */ | |
b6eb341b | 2611 | if (sgot) |
08556813 | 2612 | { |
b6eb341b | 2613 | unsigned char *contents = sgot->contents; |
3b3753b8 MM |
2614 | bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, contents); |
2615 | ||
08556813 | 2616 | if (sdyn == NULL) |
3b3753b8 | 2617 | bfd_put_32 (output_bfd, (bfd_vma) 0, contents+4); |
08556813 MM |
2618 | else |
2619 | bfd_put_32 (output_bfd, | |
2620 | sdyn->output_section->vma + sdyn->output_offset, | |
3b3753b8 | 2621 | contents+4); |
08556813 | 2622 | |
b6eb341b | 2623 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; |
3b3753b8 | 2624 | } |
08556813 MM |
2625 | |
2626 | if (info->shared) | |
2627 | { | |
2628 | asection *sdynsym; | |
2629 | asection *s; | |
2630 | Elf_Internal_Sym sym; | |
b6eb341b | 2631 | int maxdindx = 0; |
08556813 MM |
2632 | |
2633 | /* Set up the section symbols for the output sections. */ | |
2634 | ||
2635 | sdynsym = bfd_get_section_by_name (dynobj, ".dynsym"); | |
2636 | BFD_ASSERT (sdynsym != NULL); | |
2637 | ||
2638 | sym.st_size = 0; | |
2639 | sym.st_name = 0; | |
2640 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); | |
2641 | sym.st_other = 0; | |
2642 | ||
2643 | for (s = output_bfd->sections; s != NULL; s = s->next) | |
2644 | { | |
b6eb341b | 2645 | int indx, dindx; |
08556813 MM |
2646 | |
2647 | sym.st_value = s->vma; | |
2648 | ||
2649 | indx = elf_section_data (s)->this_idx; | |
b6eb341b ILT |
2650 | dindx = elf_section_data (s)->dynindx; |
2651 | if (dindx != -1) | |
2652 | { | |
2653 | BFD_ASSERT(indx > 0); | |
2654 | BFD_ASSERT(dindx > 0); | |
91e32e23 | 2655 | |
b6eb341b ILT |
2656 | if (dindx > maxdindx) |
2657 | maxdindx = dindx; | |
2658 | ||
2659 | sym.st_shndx = indx; | |
2660 | ||
2661 | bfd_elf32_swap_symbol_out (output_bfd, &sym, | |
2662 | (PTR) (((Elf32_External_Sym *) | |
2663 | sdynsym->contents) | |
2664 | + dindx)); | |
2665 | } | |
08556813 MM |
2666 | } |
2667 | ||
2668 | /* Set the sh_info field of the output .dynsym section to the | |
2669 | index of the first global symbol. */ | |
2670 | elf_section_data (sdynsym->output_section)->this_hdr.sh_info = | |
b6eb341b | 2671 | maxdindx + 1; |
08556813 MM |
2672 | } |
2673 | ||
2674 | return true; | |
2675 | } | |
2676 | ||
ede4eed4 KR |
2677 | \f |
2678 | /* The RELOCATE_SECTION function is called by the ELF backend linker | |
2679 | to handle the relocations for a section. | |
bcbe2c71 | 2680 | |
ede4eed4 KR |
2681 | The relocs are always passed as Rela structures; if the section |
2682 | actually uses Rel structures, the r_addend field will always be | |
2683 | zero. | |
bcbe2c71 | 2684 | |
ede4eed4 KR |
2685 | This function is responsible for adjust the section contents as |
2686 | necessary, and (if using Rela relocs and generating a | |
2687 | relocateable output file) adjusting the reloc addend as | |
2688 | necessary. | |
bcbe2c71 | 2689 | |
ede4eed4 KR |
2690 | This function does not have to worry about setting the reloc |
2691 | address or the reloc symbol index. | |
2692 | ||
2693 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
2694 | ||
2695 | LOCAL_SECTIONS is an array giving the section in the input file | |
2696 | corresponding to the st_shndx field of each local symbol. | |
2697 | ||
2698 | The global hash table entry for the global symbols can be found | |
2699 | via elf_sym_hashes (input_bfd). | |
2700 | ||
2701 | When generating relocateable output, this function must handle | |
2702 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is | |
2703 | going to be the section symbol corresponding to the output | |
2704 | section, which means that the addend must be adjusted | |
2705 | accordingly. */ | |
2706 | ||
2707 | static boolean | |
2708 | ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, | |
2709 | contents, relocs, local_syms, local_sections) | |
2710 | bfd *output_bfd; | |
2711 | struct bfd_link_info *info; | |
2712 | bfd *input_bfd; | |
2713 | asection *input_section; | |
2714 | bfd_byte *contents; | |
2715 | Elf_Internal_Rela *relocs; | |
2716 | Elf_Internal_Sym *local_syms; | |
2717 | asection **local_sections; | |
bcbe2c71 | 2718 | { |
08556813 | 2719 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
ede4eed4 | 2720 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); |
08556813 | 2721 | bfd *dynobj = elf_hash_table (info)->dynobj; |
3f7ca26b MM |
2722 | elf_linker_section_t *sdata = (dynobj) ? elf_linker_section (dynobj, LINKER_SECTION_SDATA) : NULL; |
2723 | elf_linker_section_t *sdata2 = (dynobj) ? elf_linker_section (dynobj, LINKER_SECTION_SDATA2) : NULL; | |
07a159db MM |
2724 | Elf_Internal_Rela *rel = relocs; |
2725 | Elf_Internal_Rela *relend = relocs + input_section->reloc_count; | |
e7bab9df | 2726 | asection *sreloc = NULL; |
b6eb341b ILT |
2727 | asection *splt = NULL; |
2728 | asection *sgot = NULL; | |
2729 | bfd_vma *local_got_offsets; | |
07a159db | 2730 | boolean ret = true; |
08556813 | 2731 | long insn; |
ede4eed4 KR |
2732 | |
2733 | #ifdef DEBUG | |
2734 | fprintf (stderr, "ppc_elf_relocate_section called for %s section %s, %ld relocations%s\n", | |
2735 | bfd_get_filename (input_bfd), | |
2736 | bfd_section_name(input_bfd, input_section), | |
2737 | (long)input_section->reloc_count, | |
2738 | (info->relocateable) ? " (relocatable)" : ""); | |
2739 | #endif | |
2740 | ||
2741 | if (!ppc_elf_howto_table[ R_PPC_ADDR32 ]) /* Initialize howto table if needed */ | |
2742 | ppc_elf_howto_init (); | |
bcbe2c71 | 2743 | |
b6eb341b ILT |
2744 | local_got_offsets = elf_local_got_offsets (input_bfd); |
2745 | ||
ede4eed4 | 2746 | for (; rel < relend; rel++) |
bcbe2c71 | 2747 | { |
07a159db MM |
2748 | enum ppc_reloc_type r_type = (enum ppc_reloc_type)ELF32_R_TYPE (rel->r_info); |
2749 | bfd_vma offset = rel->r_offset; | |
2750 | bfd_vma addend = rel->r_addend; | |
2751 | bfd_reloc_status_type r = bfd_reloc_other; | |
2752 | Elf_Internal_Sym *sym = (Elf_Internal_Sym *)0; | |
2753 | asection *sec = (asection *)0; | |
2754 | struct elf_link_hash_entry *h = (struct elf_link_hash_entry *)0; | |
c1e65e24 | 2755 | const char *sym_name = (const char *)0; |
ede4eed4 KR |
2756 | reloc_howto_type *howto; |
2757 | unsigned long r_symndx; | |
2758 | bfd_vma relocation; | |
2759 | ||
2760 | /* Unknown relocation handling */ | |
2761 | if ((unsigned)r_type >= (unsigned)R_PPC_max || !ppc_elf_howto_table[(int)r_type]) | |
2762 | { | |
91e32e23 | 2763 | (*_bfd_error_handler) (_("%s: unknown relocation type %d"), |
1c3a295b MM |
2764 | bfd_get_filename (input_bfd), |
2765 | (int)r_type); | |
ede4eed4 KR |
2766 | |
2767 | bfd_set_error (bfd_error_bad_value); | |
2768 | ret = false; | |
2769 | continue; | |
2770 | } | |
2771 | ||
2772 | howto = ppc_elf_howto_table[(int)r_type]; | |
2773 | r_symndx = ELF32_R_SYM (rel->r_info); | |
2774 | ||
2775 | if (info->relocateable) | |
2776 | { | |
2777 | /* This is a relocateable link. We don't have to change | |
2778 | anything, unless the reloc is against a section symbol, | |
2779 | in which case we have to adjust according to where the | |
2780 | section symbol winds up in the output section. */ | |
2781 | if (r_symndx < symtab_hdr->sh_info) | |
2782 | { | |
2783 | sym = local_syms + r_symndx; | |
2784 | if ((unsigned)ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
2785 | { | |
2786 | sec = local_sections[r_symndx]; | |
2787 | addend = rel->r_addend += sec->output_offset + sym->st_value; | |
2788 | } | |
2789 | } | |
2790 | ||
2791 | #ifdef DEBUG | |
2792 | fprintf (stderr, "\ttype = %s (%d), symbol index = %ld, offset = %ld, addend = %ld\n", | |
2793 | howto->name, | |
2794 | (int)r_type, | |
2795 | r_symndx, | |
2796 | (long)offset, | |
2797 | (long)addend); | |
2798 | #endif | |
2799 | continue; | |
2800 | } | |
2801 | ||
2802 | /* This is a final link. */ | |
ede4eed4 KR |
2803 | if (r_symndx < symtab_hdr->sh_info) |
2804 | { | |
2805 | sym = local_syms + r_symndx; | |
2806 | sec = local_sections[r_symndx]; | |
c1e65e24 MM |
2807 | sym_name = "<local symbol>"; |
2808 | ||
ede4eed4 KR |
2809 | relocation = (sec->output_section->vma |
2810 | + sec->output_offset | |
2811 | + sym->st_value); | |
2812 | } | |
2813 | else | |
2814 | { | |
2815 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
cf5138e3 ILT |
2816 | while (h->root.type == bfd_link_hash_indirect |
2817 | || h->root.type == bfd_link_hash_warning) | |
2818 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
c1e65e24 | 2819 | sym_name = h->root.root.string; |
ede4eed4 KR |
2820 | if (h->root.type == bfd_link_hash_defined |
2821 | || h->root.type == bfd_link_hash_defweak) | |
2822 | { | |
2823 | sec = h->root.u.def.section; | |
e7bab9df | 2824 | if ((r_type == R_PPC_PLT32 |
91e32e23 UD |
2825 | && h->plt.offset != (bfd_vma) -1) |
2826 | || (r_type == R_PPC_LOCAL24PC | |
2827 | && sec->output_section == NULL) | |
e7bab9df MM |
2828 | || ((r_type == R_PPC_GOT16 |
2829 | || r_type == R_PPC_GOT16_LO | |
2830 | || r_type == R_PPC_GOT16_HI | |
2831 | || r_type == R_PPC_GOT16_HA) | |
2832 | && elf_hash_table (info)->dynamic_sections_created | |
2833 | && (! info->shared | |
91e32e23 | 2834 | || (! info->symbolic && h->dynindx != -1) |
e7bab9df MM |
2835 | || (h->elf_link_hash_flags |
2836 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
2837 | || (info->shared | |
91e32e23 | 2838 | && ((! info->symbolic && h->dynindx != -1) |
e7bab9df MM |
2839 | || (h->elf_link_hash_flags |
2840 | & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
2841 | && (input_section->flags & SEC_ALLOC) != 0 | |
2842 | && (r_type == R_PPC_ADDR32 | |
2843 | || r_type == R_PPC_ADDR24 | |
2844 | || r_type == R_PPC_ADDR16 | |
2845 | || r_type == R_PPC_ADDR16_LO | |
2846 | || r_type == R_PPC_ADDR16_HI | |
2847 | || r_type == R_PPC_ADDR16_HA | |
2848 | || r_type == R_PPC_ADDR14 | |
2849 | || r_type == R_PPC_ADDR14_BRTAKEN | |
2850 | || r_type == R_PPC_ADDR14_BRNTAKEN | |
2851 | || r_type == R_PPC_PLTREL24 | |
2852 | || r_type == R_PPC_COPY | |
2853 | || r_type == R_PPC_GLOB_DAT | |
2854 | || r_type == R_PPC_JMP_SLOT | |
2855 | || r_type == R_PPC_UADDR32 | |
2856 | || r_type == R_PPC_UADDR16 | |
e7bab9df MM |
2857 | || r_type == R_PPC_SDAREL16 |
2858 | || r_type == R_PPC_EMB_NADDR32 | |
2859 | || r_type == R_PPC_EMB_NADDR16 | |
2860 | || r_type == R_PPC_EMB_NADDR16_LO | |
2861 | || r_type == R_PPC_EMB_NADDR16_HI | |
2862 | || r_type == R_PPC_EMB_NADDR16_HA | |
2863 | || r_type == R_PPC_EMB_SDAI16 | |
2864 | || r_type == R_PPC_EMB_SDA2I16 | |
2865 | || r_type == R_PPC_EMB_SDA2REL | |
2866 | || r_type == R_PPC_EMB_SDA21 | |
2867 | || r_type == R_PPC_EMB_MRKREF | |
2868 | || r_type == R_PPC_EMB_BIT_FLD | |
2869 | || r_type == R_PPC_EMB_RELSDA | |
2870 | || ((r_type == R_PPC_REL24 | |
91e32e23 | 2871 | || r_type == R_PPC_REL32 |
e7bab9df MM |
2872 | || r_type == R_PPC_REL14 |
2873 | || r_type == R_PPC_REL14_BRTAKEN | |
2874 | || r_type == R_PPC_REL14_BRNTAKEN | |
2875 | || r_type == R_PPC_RELATIVE) | |
2876 | && strcmp (h->root.root.string, | |
2877 | "_GLOBAL_OFFSET_TABLE_") != 0)))) | |
3f7ca26b | 2878 | { |
e7bab9df MM |
2879 | /* In these cases, we don't need the relocation |
2880 | value. We check specially because in some | |
2881 | obscure cases sec->output_section will be NULL. */ | |
3f7ca26b MM |
2882 | relocation = 0; |
2883 | } | |
2884 | else | |
2885 | relocation = (h->root.u.def.value | |
2886 | + sec->output_section->vma | |
2887 | + sec->output_offset); | |
ede4eed4 KR |
2888 | } |
2889 | else if (h->root.type == bfd_link_hash_undefweak) | |
2890 | relocation = 0; | |
2891 | else if (info->shared) | |
2892 | relocation = 0; | |
2893 | else | |
2894 | { | |
2895 | (*info->callbacks->undefined_symbol)(info, | |
2896 | h->root.root.string, | |
2897 | input_bfd, | |
2898 | input_section, | |
2899 | rel->r_offset); | |
2900 | ret = false; | |
2901 | continue; | |
2902 | } | |
2903 | } | |
2904 | ||
2905 | switch ((int)r_type) | |
2906 | { | |
2907 | default: | |
91e32e23 | 2908 | (*_bfd_error_handler) (_("%s: unknown relocation type %d for symbol %s"), |
1c3a295b | 2909 | bfd_get_filename (input_bfd), |
c1e65e24 | 2910 | (int)r_type, sym_name); |
1c3a295b MM |
2911 | |
2912 | bfd_set_error (bfd_error_bad_value); | |
2913 | ret = false; | |
2914 | continue; | |
2915 | ||
91e32e23 | 2916 | /* Relocations that need no special processing. */ |
e7bab9df | 2917 | case (int)R_PPC_LOCAL24PC: |
91e32e23 UD |
2918 | /* It makes no sense to point a local relocation |
2919 | at a symbol not in this object. */ | |
2920 | if (h != NULL | |
2921 | && (h->root.type == bfd_link_hash_defined | |
2922 | || h->root.type == bfd_link_hash_defweak) | |
2923 | && sec->output_section == NULL) | |
2924 | { | |
2925 | (*info->callbacks->undefined_symbol) (info, | |
2926 | h->root.root.string, | |
2927 | input_bfd, | |
2928 | input_section, | |
2929 | rel->r_offset); | |
2930 | ret = false; | |
2931 | continue; | |
2932 | } | |
e7bab9df MM |
2933 | break; |
2934 | ||
91e32e23 UD |
2935 | /* Relocations that may need to be propagated if this is a shared |
2936 | object. */ | |
e7bab9df | 2937 | case (int)R_PPC_REL24: |
91e32e23 | 2938 | case (int)R_PPC_REL32: |
e7bab9df | 2939 | case (int)R_PPC_REL14: |
91e32e23 UD |
2940 | /* If these relocations are not to a named symbol, they can be |
2941 | handled right here, no need to bother the dynamic linker. */ | |
b6eb341b ILT |
2942 | if (h == NULL |
2943 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
e7bab9df | 2944 | break; |
91e32e23 | 2945 | /* fall through */ |
e7bab9df | 2946 | |
91e32e23 | 2947 | /* Relocations that always need to be propagated if this is a shared |
b6eb341b | 2948 | object. */ |
3b3753b8 MM |
2949 | case (int)R_PPC_NONE: |
2950 | case (int)R_PPC_ADDR32: | |
2951 | case (int)R_PPC_ADDR24: | |
2952 | case (int)R_PPC_ADDR16: | |
2953 | case (int)R_PPC_ADDR16_LO: | |
2954 | case (int)R_PPC_ADDR16_HI: | |
b6eb341b | 2955 | case (int)R_PPC_ADDR16_HA: |
3b3753b8 | 2956 | case (int)R_PPC_ADDR14: |
3b3753b8 MM |
2957 | case (int)R_PPC_UADDR32: |
2958 | case (int)R_PPC_UADDR16: | |
b6eb341b | 2959 | if (info->shared) |
e7bab9df MM |
2960 | { |
2961 | Elf_Internal_Rela outrel; | |
6717fb0d | 2962 | boolean skip; |
e7bab9df MM |
2963 | |
2964 | #ifdef DEBUG | |
2965 | fprintf (stderr, "ppc_elf_relocate_section need to create relocation for %s\n", | |
2966 | (h && h->root.root.string) ? h->root.root.string : "<unknown>"); | |
2967 | #endif | |
2968 | ||
2969 | /* When generating a shared object, these relocations | |
2970 | are copied into the output file to be resolved at run | |
2971 | time. */ | |
2972 | ||
2973 | if (sreloc == NULL) | |
2974 | { | |
2975 | const char *name; | |
2976 | ||
2977 | name = (bfd_elf_string_from_elf_section | |
2978 | (input_bfd, | |
2979 | elf_elfheader (input_bfd)->e_shstrndx, | |
2980 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
2981 | if (name == NULL) | |
2982 | return false; | |
2983 | ||
2984 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
2985 | && strcmp (bfd_get_section_name (input_bfd, | |
2986 | input_section), | |
2987 | name + 5) == 0); | |
2988 | ||
2989 | sreloc = bfd_get_section_by_name (dynobj, name); | |
2990 | BFD_ASSERT (sreloc != NULL); | |
2991 | } | |
2992 | ||
6717fb0d ILT |
2993 | skip = false; |
2994 | ||
2995 | if (elf_section_data (input_section)->stab_info == NULL) | |
2996 | outrel.r_offset = rel->r_offset; | |
2997 | else | |
2998 | { | |
2999 | bfd_vma off; | |
3000 | ||
3001 | off = (_bfd_stab_section_offset | |
3002 | (output_bfd, &elf_hash_table (info)->stab_info, | |
3003 | input_section, | |
3004 | &elf_section_data (input_section)->stab_info, | |
3005 | rel->r_offset)); | |
3006 | if (off == (bfd_vma) -1) | |
3007 | skip = true; | |
3008 | outrel.r_offset = off; | |
3009 | } | |
3010 | ||
3011 | outrel.r_offset += (input_section->output_section->vma | |
3012 | + input_section->output_offset); | |
3013 | ||
3014 | if (skip) | |
3015 | memset (&outrel, 0, sizeof outrel); | |
3016 | /* h->dynindx may be -1 if this symbol was marked to | |
3017 | become local. */ | |
3018 | else if (h != NULL | |
3019 | && ((! info->symbolic && h->dynindx != -1) | |
3020 | || (h->elf_link_hash_flags | |
3021 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
e7bab9df MM |
3022 | { |
3023 | BFD_ASSERT (h->dynindx != -1); | |
3024 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
3025 | outrel.r_addend = rel->r_addend; | |
3026 | } | |
3027 | else | |
3028 | { | |
3029 | if (r_type == R_PPC_ADDR32) | |
3030 | { | |
3031 | outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); | |
3032 | outrel.r_addend = relocation + rel->r_addend; | |
3033 | } | |
3034 | else | |
3035 | { | |
3036 | long indx; | |
3037 | ||
3038 | if (h == NULL) | |
3039 | sec = local_sections[r_symndx]; | |
3040 | else | |
3041 | { | |
3042 | BFD_ASSERT (h->root.type == bfd_link_hash_defined | |
3043 | || (h->root.type | |
3044 | == bfd_link_hash_defweak)); | |
3045 | sec = h->root.u.def.section; | |
3046 | } | |
3047 | if (sec != NULL && bfd_is_abs_section (sec)) | |
3048 | indx = 0; | |
3049 | else if (sec == NULL || sec->owner == NULL) | |
3050 | { | |
3051 | bfd_set_error (bfd_error_bad_value); | |
3052 | return false; | |
3053 | } | |
3054 | else | |
3055 | { | |
3056 | asection *osec; | |
3057 | ||
3058 | osec = sec->output_section; | |
3059 | indx = elf_section_data (osec)->dynindx; | |
b6eb341b | 3060 | BFD_ASSERT(indx > 0); |
91e32e23 UD |
3061 | #ifdef DEBUG |
3062 | if (indx <= 0) | |
3063 | { | |
3064 | printf("indx=%d section=%s flags=%08x name=%s\n", | |
3065 | indx, osec->name, osec->flags, | |
3066 | h->root.root.string); | |
3067 | } | |
3068 | #endif | |
e7bab9df MM |
3069 | } |
3070 | ||
3071 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
3072 | outrel.r_addend = relocation + rel->r_addend; | |
3073 | } | |
3074 | } | |
3075 | ||
3076 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
3077 | (((Elf32_External_Rela *) | |
3078 | sreloc->contents) | |
3079 | + sreloc->reloc_count)); | |
3080 | ++sreloc->reloc_count; | |
3081 | ||
3082 | /* This reloc will be computed at runtime, so there's no | |
b6eb341b ILT |
3083 | need to do anything now, unless this is a RELATIVE |
3084 | reloc in an unallocated section. */ | |
3085 | if (skip | |
3086 | || (input_section->flags & SEC_ALLOC) != 0 | |
3087 | || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE) | |
3088 | continue; | |
3089 | } | |
3090 | ||
3091 | /* Arithmetic adjust relocations that aren't going into a | |
3092 | shared object. */ | |
3093 | if (r_type == R_PPC_ADDR16_HA | |
3094 | /* It's just possible that this symbol is a weak symbol | |
3095 | that's not actually defined anywhere. In that case, | |
3096 | 'sec' would be NULL, and we should leave the symbol | |
3097 | alone (it will be set to zero elsewhere in the link). */ | |
3098 | && sec != NULL) | |
3099 | { | |
3100 | addend += ((relocation + addend) & 0x8000) << 1; | |
e7bab9df | 3101 | } |
ede4eed4 KR |
3102 | break; |
3103 | ||
3b3753b8 MM |
3104 | /* branch taken prediction relocations */ |
3105 | case (int)R_PPC_ADDR14_BRTAKEN: | |
08556813 | 3106 | case (int)R_PPC_REL14_BRTAKEN: |
07a159db MM |
3107 | insn = bfd_get_32 (output_bfd, contents + offset); |
3108 | if ((relocation - offset) & 0x8000) | |
3109 | insn &= ~BRANCH_PREDICT_BIT; | |
3110 | else | |
3111 | insn |= BRANCH_PREDICT_BIT; | |
3112 | bfd_put_32 (output_bfd, insn, contents + offset); | |
3113 | break; | |
3114 | ||
3b3753b8 MM |
3115 | /* branch not taken predicition relocations */ |
3116 | case (int)R_PPC_ADDR14_BRNTAKEN: | |
08556813 | 3117 | case (int)R_PPC_REL14_BRNTAKEN: |
08556813 | 3118 | insn = bfd_get_32 (output_bfd, contents + offset); |
07a159db MM |
3119 | if ((relocation - offset) & 0x8000) |
3120 | insn |= BRANCH_PREDICT_BIT; | |
3121 | else | |
3122 | insn &= ~BRANCH_PREDICT_BIT; | |
08556813 MM |
3123 | bfd_put_32 (output_bfd, insn, contents + offset); |
3124 | break; | |
3125 | ||
3b3753b8 MM |
3126 | /* GOT16 relocations */ |
3127 | case (int)R_PPC_GOT16: | |
ede4eed4 KR |
3128 | case (int)R_PPC_GOT16_LO: |
3129 | case (int)R_PPC_GOT16_HI: | |
1c3a295b | 3130 | case (int)R_PPC_GOT16_HA: |
b6eb341b ILT |
3131 | /* Relocation is to the entry for this symbol in the global |
3132 | offset table. */ | |
3133 | if (sgot == NULL) | |
3134 | { | |
3135 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
3136 | BFD_ASSERT (sgot != NULL); | |
3137 | } | |
3138 | ||
3139 | if (h != NULL) | |
3140 | { | |
3141 | bfd_vma off; | |
3142 | ||
91e32e23 | 3143 | off = h->got.offset; |
b6eb341b ILT |
3144 | BFD_ASSERT (off != (bfd_vma) -1); |
3145 | ||
3146 | if (! elf_hash_table (info)->dynamic_sections_created | |
3147 | || (info->shared | |
91e32e23 | 3148 | && (info->symbolic || h->dynindx == -1) |
b6eb341b ILT |
3149 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) |
3150 | { | |
3151 | /* This is actually a static link, or it is a | |
3152 | -Bsymbolic link and the symbol is defined | |
3153 | locally. We must initialize this entry in the | |
3154 | global offset table. Since the offset must | |
3155 | always be a multiple of 4, we use the least | |
3156 | significant bit to record whether we have | |
3157 | initialized it already. | |
3158 | ||
3159 | When doing a dynamic link, we create a .rela.got | |
3160 | relocation entry to initialize the value. This | |
3161 | is done in the finish_dynamic_symbol routine. */ | |
3162 | if ((off & 1) != 0) | |
3163 | off &= ~1; | |
3164 | else | |
3165 | { | |
91e32e23 | 3166 | bfd_put_32 (output_bfd, relocation, |
b6eb341b | 3167 | sgot->contents + off); |
91e32e23 | 3168 | h->got.offset |= 1; |
b6eb341b ILT |
3169 | } |
3170 | } | |
3171 | ||
3172 | relocation = sgot->output_offset + off - 4; | |
b6eb341b ILT |
3173 | } |
3174 | else | |
3175 | { | |
3176 | bfd_vma off; | |
3177 | ||
3178 | BFD_ASSERT (local_got_offsets != NULL | |
3179 | && local_got_offsets[r_symndx] != (bfd_vma) -1); | |
3180 | ||
3181 | off = local_got_offsets[r_symndx]; | |
3182 | ||
3183 | /* The offset must always be a multiple of 4. We use | |
3184 | the least significant bit to record whether we have | |
3185 | already processed this entry. */ | |
3186 | if ((off & 1) != 0) | |
3187 | off &= ~1; | |
3188 | else | |
3189 | { | |
3190 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
3191 | ||
3192 | if (info->shared) | |
3193 | { | |
3194 | asection *srelgot; | |
3195 | Elf_Internal_Rela outrel; | |
3196 | ||
3197 | /* We need to generate a R_PPC_RELATIVE reloc | |
3198 | for the dynamic linker. */ | |
3199 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
3200 | BFD_ASSERT (srelgot != NULL); | |
3201 | ||
3202 | outrel.r_offset = (sgot->output_section->vma | |
3203 | + sgot->output_offset | |
3204 | + off); | |
3205 | outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); | |
91e32e23 | 3206 | outrel.r_addend = relocation; |
b6eb341b ILT |
3207 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, |
3208 | (((Elf32_External_Rela *) | |
3209 | srelgot->contents) | |
3210 | + srelgot->reloc_count)); | |
3211 | ++srelgot->reloc_count; | |
3212 | } | |
3213 | ||
3214 | local_got_offsets[r_symndx] |= 1; | |
3215 | } | |
3216 | ||
3217 | relocation = sgot->output_offset + off - 4; | |
b6eb341b | 3218 | } |
3b3753b8 | 3219 | break; |
07a159db | 3220 | |
3b3753b8 MM |
3221 | /* Indirect .sdata relocation */ |
3222 | case (int)R_PPC_EMB_SDAI16: | |
3223 | BFD_ASSERT (sdata != NULL); | |
3224 | relocation = bfd_elf32_finish_pointer_linker_section (output_bfd, input_bfd, info, | |
3225 | sdata, h, relocation, rel, | |
3226 | R_PPC_RELATIVE); | |
3227 | break; | |
07a159db | 3228 | |
3b3753b8 MM |
3229 | /* Indirect .sdata2 relocation */ |
3230 | case (int)R_PPC_EMB_SDA2I16: | |
3231 | BFD_ASSERT (sdata2 != NULL); | |
3232 | relocation = bfd_elf32_finish_pointer_linker_section (output_bfd, input_bfd, info, | |
3233 | sdata2, h, relocation, rel, | |
3234 | R_PPC_RELATIVE); | |
ede4eed4 KR |
3235 | break; |
3236 | ||
07a159db MM |
3237 | /* Handle the TOC16 reloc. We want to use the offset within the .got |
3238 | section, not the actual VMA. This is appropriate when generating | |
3239 | an embedded ELF object, for which the .got section acts like the | |
3240 | AIX .toc section. */ | |
08556813 MM |
3241 | case (int)R_PPC_TOC16: /* phony GOT16 relocations */ |
3242 | BFD_ASSERT (sec != (asection *)0); | |
07a159db MM |
3243 | BFD_ASSERT (bfd_is_und_section (sec) |
3244 | || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0 | |
bd2d10c0 | 3245 | || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0) |
07a159db | 3246 | |
eb82bc60 | 3247 | addend -= sec->output_section->vma + sec->output_offset + 0x8000; |
08556813 MM |
3248 | break; |
3249 | ||
b6eb341b ILT |
3250 | case (int)R_PPC_PLTREL24: |
3251 | /* Relocation is to the entry for this symbol in the | |
3252 | procedure linkage table. */ | |
3253 | BFD_ASSERT (h != NULL); | |
3254 | ||
91e32e23 | 3255 | if (h->plt.offset == (bfd_vma) -1) |
b6eb341b ILT |
3256 | { |
3257 | /* We didn't make a PLT entry for this symbol. This | |
3258 | happens when statically linking PIC code, or when | |
3259 | using -Bsymbolic. */ | |
3260 | break; | |
3261 | } | |
1c3a295b | 3262 | |
b6eb341b ILT |
3263 | if (splt == NULL) |
3264 | { | |
3265 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
3266 | BFD_ASSERT (splt != NULL); | |
3267 | } | |
3268 | ||
3269 | relocation = (splt->output_section->vma | |
3270 | + splt->output_offset | |
91e32e23 | 3271 | + h->plt.offset); |
b6eb341b | 3272 | break; |
91e32e23 | 3273 | |
3b3753b8 MM |
3274 | /* relocate against _SDA_BASE_ */ |
3275 | case (int)R_PPC_SDAREL16: | |
bd2d10c0 MM |
3276 | BFD_ASSERT (sec != (asection *)0); |
3277 | if (strcmp (bfd_get_section_name (abfd, sec), ".sdata") != 0 | |
91e32e23 | 3278 | && strcmp (bfd_get_section_name (abfd, sec), ".dynsbss") != 0 |
bd2d10c0 MM |
3279 | && strcmp (bfd_get_section_name (abfd, sec), ".sbss") != 0) |
3280 | { | |
91e32e23 | 3281 | (*_bfd_error_handler) (_("%s: The target (%s) of a %s relocation is in the wrong section (%s)"), |
bd2d10c0 | 3282 | bfd_get_filename (input_bfd), |
c1e65e24 | 3283 | sym_name, |
3b3753b8 | 3284 | ppc_elf_howto_table[ (int)r_type ]->name, |
bd2d10c0 MM |
3285 | bfd_get_section_name (abfd, sec)); |
3286 | ||
3287 | bfd_set_error (bfd_error_bad_value); | |
3288 | ret = false; | |
3289 | continue; | |
3290 | } | |
9d621c7d | 3291 | addend -= (sdata->sym_hash->root.u.def.value |
eb82bc60 MM |
3292 | + sdata->sym_hash->root.u.def.section->output_section->vma |
3293 | + sdata->sym_hash->root.u.def.section->output_offset); | |
3b3753b8 | 3294 | break; |
bd2d10c0 | 3295 | |
05f927dd | 3296 | |
3b3753b8 MM |
3297 | /* relocate against _SDA2_BASE_ */ |
3298 | case (int)R_PPC_EMB_SDA2REL: | |
bd2d10c0 MM |
3299 | BFD_ASSERT (sec != (asection *)0); |
3300 | if (strcmp (bfd_get_section_name (abfd, sec), ".sdata2") != 0 | |
3301 | && strcmp (bfd_get_section_name (abfd, sec), ".sbss2") != 0) | |
3302 | { | |
91e32e23 | 3303 | (*_bfd_error_handler) (_("%s: The target (%s) of a %s relocation is in the wrong section (%s)"), |
bd2d10c0 | 3304 | bfd_get_filename (input_bfd), |
c1e65e24 | 3305 | sym_name, |
3b3753b8 | 3306 | ppc_elf_howto_table[ (int)r_type ]->name, |
bd2d10c0 MM |
3307 | bfd_get_section_name (abfd, sec)); |
3308 | ||
3309 | bfd_set_error (bfd_error_bad_value); | |
3310 | ret = false; | |
3311 | continue; | |
3312 | } | |
9d621c7d | 3313 | addend -= (sdata2->sym_hash->root.u.def.value |
eb82bc60 MM |
3314 | + sdata2->sym_hash->root.u.def.section->output_section->vma |
3315 | + sdata2->sym_hash->root.u.def.section->output_offset); | |
3b3753b8 | 3316 | break; |
bd2d10c0 MM |
3317 | |
3318 | ||
3b3753b8 MM |
3319 | /* relocate against either _SDA_BASE_, _SDA2_BASE_, or 0 */ |
3320 | case (int)R_PPC_EMB_SDA21: | |
3321 | case (int)R_PPC_EMB_RELSDA: | |
3322 | { | |
3323 | const char *name = bfd_get_section_name (abfd, sec); | |
3324 | int reg; | |
3325 | ||
3326 | BFD_ASSERT (sec != (asection *)0); | |
3327 | if (strcmp (name, ".sdata") == 0 || strcmp (name, ".sbss") == 0) | |
3328 | { | |
3329 | reg = 13; | |
9d621c7d | 3330 | addend -= (sdata->sym_hash->root.u.def.value |
eb82bc60 MM |
3331 | + sdata->sym_hash->root.u.def.section->output_section->vma |
3332 | + sdata->sym_hash->root.u.def.section->output_offset); | |
3b3753b8 MM |
3333 | } |
3334 | ||
3335 | else if (strcmp (name, ".sdata2") == 0 || strcmp (name, ".sbss2") == 0) | |
3336 | { | |
3337 | reg = 2; | |
9d621c7d | 3338 | addend -= (sdata2->sym_hash->root.u.def.value |
eb82bc60 MM |
3339 | + sdata2->sym_hash->root.u.def.section->output_section->vma |
3340 | + sdata2->sym_hash->root.u.def.section->output_offset); | |
3b3753b8 MM |
3341 | } |
3342 | ||
3343 | else if (strcmp (name, ".PPC.EMB.sdata0") == 0 || strcmp (name, ".PPC.EMB.sbss0") == 0) | |
3344 | { | |
3345 | reg = 0; | |
3346 | } | |
3347 | ||
3348 | else | |
3349 | { | |
91e32e23 | 3350 | (*_bfd_error_handler) (_("%s: The target (%s) of a %s relocation is in the wrong section (%s)"), |
3b3753b8 | 3351 | bfd_get_filename (input_bfd), |
c1e65e24 | 3352 | sym_name, |
3b3753b8 MM |
3353 | ppc_elf_howto_table[ (int)r_type ]->name, |
3354 | bfd_get_section_name (abfd, sec)); | |
3355 | ||
3356 | bfd_set_error (bfd_error_bad_value); | |
3357 | ret = false; | |
3358 | continue; | |
3359 | } | |
d8fd85ad MM |
3360 | |
3361 | if (r_type == R_PPC_EMB_SDA21) | |
3362 | { /* fill in register field */ | |
cf5138e3 | 3363 | insn = bfd_get_32 (output_bfd, contents + offset); |
d8fd85ad | 3364 | insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT); |
cf5138e3 | 3365 | bfd_put_32 (output_bfd, insn, contents + offset); |
d8fd85ad | 3366 | } |
3b3753b8 | 3367 | } |
d8fd85ad | 3368 | break; |
3b3753b8 | 3369 | |
eb82bc60 MM |
3370 | /* Relocate against the beginning of the section */ |
3371 | case (int)R_PPC_SECTOFF: | |
3372 | case (int)R_PPC_SECTOFF_LO: | |
3373 | case (int)R_PPC_SECTOFF_HI: | |
3374 | BFD_ASSERT (sec != (asection *)0); | |
3375 | addend -= sec->output_section->vma; | |
3376 | break; | |
3377 | ||
3378 | case (int)R_PPC_SECTOFF_HA: | |
3379 | BFD_ASSERT (sec != (asection *)0); | |
3380 | addend -= sec->output_section->vma; | |
3381 | addend += ((relocation + addend) & 0x8000) << 1; | |
3382 | break; | |
3383 | ||
3384 | /* Negative relocations */ | |
3385 | case (int)R_PPC_EMB_NADDR32: | |
3386 | case (int)R_PPC_EMB_NADDR16: | |
3387 | case (int)R_PPC_EMB_NADDR16_LO: | |
3388 | case (int)R_PPC_EMB_NADDR16_HI: | |
3389 | addend -= 2*relocation; | |
3390 | break; | |
3391 | ||
3392 | case (int)R_PPC_EMB_NADDR16_HA: | |
3393 | addend -= 2*relocation; | |
3394 | addend += ((relocation + addend) & 0x8000) << 1; | |
3395 | break; | |
3396 | ||
3397 | /* NOP relocation that prevents garbage collecting linkers from omitting a | |
3398 | reference. */ | |
3399 | case (int)R_PPC_EMB_MRKREF: | |
3400 | continue; | |
3401 | ||
3b3753b8 MM |
3402 | case (int)R_PPC_COPY: |
3403 | case (int)R_PPC_GLOB_DAT: | |
3404 | case (int)R_PPC_JMP_SLOT: | |
3405 | case (int)R_PPC_RELATIVE: | |
3b3753b8 MM |
3406 | case (int)R_PPC_PLT32: |
3407 | case (int)R_PPC_PLTREL32: | |
3408 | case (int)R_PPC_PLT16_LO: | |
3409 | case (int)R_PPC_PLT16_HI: | |
3410 | case (int)R_PPC_PLT16_HA: | |
3b3753b8 MM |
3411 | case (int)R_PPC_EMB_RELSEC16: |
3412 | case (int)R_PPC_EMB_RELST_LO: | |
3413 | case (int)R_PPC_EMB_RELST_HI: | |
3414 | case (int)R_PPC_EMB_RELST_HA: | |
3415 | case (int)R_PPC_EMB_BIT_FLD: | |
91e32e23 | 3416 | (*_bfd_error_handler) (_("%s: Relocation %s is not yet supported for symbol %s."), |
1c3a295b | 3417 | bfd_get_filename (input_bfd), |
c1e65e24 MM |
3418 | ppc_elf_howto_table[ (int)r_type ]->name, |
3419 | sym_name); | |
1c3a295b | 3420 | |
3b3753b8 | 3421 | bfd_set_error (bfd_error_invalid_operation); |
1c3a295b MM |
3422 | ret = false; |
3423 | continue; | |
91e32e23 UD |
3424 | |
3425 | case (int)R_PPC_GNU_VTINHERIT: | |
3426 | case (int)R_PPC_GNU_VTENTRY: | |
3427 | /* These are no-ops in the end. */ | |
3428 | continue; | |
ede4eed4 KR |
3429 | } |
3430 | ||
3431 | ||
3432 | #ifdef DEBUG | |
c1e65e24 | 3433 | fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, offset = %ld, addend = %ld\n", |
ede4eed4 KR |
3434 | howto->name, |
3435 | (int)r_type, | |
c1e65e24 | 3436 | sym_name, |
ede4eed4 KR |
3437 | r_symndx, |
3438 | (long)offset, | |
3439 | (long)addend); | |
3440 | #endif | |
3441 | ||
3442 | r = _bfd_final_link_relocate (howto, | |
3443 | input_bfd, | |
3444 | input_section, | |
3445 | contents, | |
3446 | offset, | |
3447 | relocation, | |
3448 | addend); | |
3449 | ||
3450 | if (r != bfd_reloc_ok) | |
3451 | { | |
3452 | ret = false; | |
3453 | switch (r) | |
3454 | { | |
3455 | default: | |
3456 | break; | |
3457 | ||
3458 | case bfd_reloc_overflow: | |
3459 | { | |
3460 | const char *name; | |
3461 | ||
3462 | if (h != NULL) | |
3463 | name = h->root.root.string; | |
3464 | else | |
3465 | { | |
3466 | name = bfd_elf_string_from_elf_section (input_bfd, | |
3467 | symtab_hdr->sh_link, | |
3468 | sym->st_name); | |
3469 | if (name == NULL) | |
3470 | break; | |
3471 | ||
3472 | if (*name == '\0') | |
3473 | name = bfd_section_name (input_bfd, sec); | |
3474 | } | |
3475 | ||
3476 | (*info->callbacks->reloc_overflow)(info, | |
3477 | name, | |
3478 | howto->name, | |
3479 | (bfd_vma) 0, | |
3480 | input_bfd, | |
3481 | input_section, | |
3482 | offset); | |
3483 | } | |
3484 | break; | |
3485 | ||
3486 | } | |
3487 | } | |
bcbe2c71 MM |
3488 | } |
3489 | ||
bcbe2c71 | 3490 | |
ede4eed4 KR |
3491 | #ifdef DEBUG |
3492 | fprintf (stderr, "\n"); | |
3493 | #endif | |
bcbe2c71 | 3494 | |
ede4eed4 | 3495 | return ret; |
bcbe2c71 MM |
3496 | } |
3497 | ||
57081126 | 3498 | \f |
ede4eed4 KR |
3499 | #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec |
3500 | #define TARGET_LITTLE_NAME "elf32-powerpcle" | |
bcbe2c71 MM |
3501 | #define TARGET_BIG_SYM bfd_elf32_powerpc_vec |
3502 | #define TARGET_BIG_NAME "elf32-powerpc" | |
3503 | #define ELF_ARCH bfd_arch_powerpc | |
3504 | #define ELF_MACHINE_CODE EM_PPC | |
3505 | #define ELF_MAXPAGESIZE 0x10000 | |
ede4eed4 | 3506 | #define elf_info_to_howto ppc_elf_info_to_howto |
bcbe2c71 MM |
3507 | |
3508 | #ifdef EM_CYGNUS_POWERPC | |
3509 | #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC | |
3510 | #endif | |
3511 | ||
3512 | #ifdef EM_PPC_OLD | |
3513 | #define ELF_MACHINE_ALT2 EM_PPC_OLD | |
3514 | #endif | |
3515 | ||
91e32e23 UD |
3516 | #define elf_backend_plt_not_loaded 1 |
3517 | #define elf_backend_got_symbol_offset 4 | |
3518 | #define elf_backend_can_gc_sections 1 | |
3519 | #define elf_backend_got_header_size 12 | |
3520 | #define elf_backend_plt_header_size PLT_INITIAL_ENTRY_SIZE | |
b6eb341b | 3521 | |
ede4eed4 KR |
3522 | #define bfd_elf32_bfd_copy_private_bfd_data ppc_elf_copy_private_bfd_data |
3523 | #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data | |
3524 | #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags | |
3525 | #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup | |
91e32e23 UD |
3526 | #define bfd_elf32_bfd_final_link _bfd_elf32_gc_common_final_link |
3527 | ||
3528 | #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook | |
3529 | #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook | |
83f4323e | 3530 | #define elf_backend_section_from_shdr ppc_elf_section_from_shdr |
ede4eed4 | 3531 | #define elf_backend_relocate_section ppc_elf_relocate_section |
91e32e23 | 3532 | #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections |
08556813 MM |
3533 | #define elf_backend_check_relocs ppc_elf_check_relocs |
3534 | #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol | |
9d621c7d | 3535 | #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook |
08556813 MM |
3536 | #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections |
3537 | #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol | |
3538 | #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections | |
57081126 | 3539 | #define elf_backend_fake_sections ppc_elf_fake_sections |
3f7ca26b MM |
3540 | #define elf_backend_additional_program_headers ppc_elf_additional_program_headers |
3541 | #define elf_backend_modify_segment_map ppc_elf_modify_segment_map | |
ede4eed4 | 3542 | |
bcbe2c71 | 3543 | #include "elf32-target.h" |