Commit | Line | Data |
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252b5132 | 1 | /* Support for the generic parts of COFF, for BFD. |
82704155 | 2 | Copyright (C) 1990-2019 Free Software Foundation, Inc. |
252b5132 RH |
3 | Written by Cygnus Support. |
4 | ||
c8e7bf0d | 5 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 6 | |
c8e7bf0d NC |
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 | |
cd123cb7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c8e7bf0d | 10 | (at your option) any later version. |
252b5132 | 11 | |
c8e7bf0d NC |
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. | |
252b5132 | 16 | |
c8e7bf0d NC |
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 | |
cd123cb7 NC |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
20 | MA 02110-1301, USA. */ | |
252b5132 RH |
21 | |
22 | /* Most of this hacked by Steve Chamberlain, sac@cygnus.com. | |
23 | Split out of coffcode.h by Ian Taylor, ian@cygnus.com. */ | |
24 | ||
25 | /* This file contains COFF code that is not dependent on any | |
26 | particular COFF target. There is only one version of this file in | |
27 | libbfd.a, so no target specific code may be put in here. Or, to | |
28 | put it another way, | |
29 | ||
30 | ********** DO NOT PUT TARGET SPECIFIC CODE IN THIS FILE ********** | |
31 | ||
32 | If you need to add some target specific behaviour, add a new hook | |
33 | function to bfd_coff_backend_data. | |
34 | ||
35 | Some of these functions are also called by the ECOFF routines. | |
36 | Those functions may not use any COFF specific information, such as | |
37 | coff_data (abfd). */ | |
38 | ||
252b5132 | 39 | #include "sysdep.h" |
7a6e0d89 | 40 | #include <limits.h> |
3db64b00 | 41 | #include "bfd.h" |
252b5132 RH |
42 | #include "libbfd.h" |
43 | #include "coff/internal.h" | |
44 | #include "libcoff.h" | |
45 | ||
252b5132 RH |
46 | /* Take a section header read from a coff file (in HOST byte order), |
47 | and make a BFD "section" out of it. This is used by ECOFF. */ | |
c8e7bf0d | 48 | |
b34976b6 | 49 | static bfd_boolean |
c8e7bf0d NC |
50 | make_a_section_from_file (bfd *abfd, |
51 | struct internal_scnhdr *hdr, | |
52 | unsigned int target_index) | |
252b5132 RH |
53 | { |
54 | asection *return_section; | |
55 | char *name; | |
b34976b6 | 56 | bfd_boolean result = TRUE; |
7c8ca0e4 | 57 | flagword flags; |
252b5132 RH |
58 | |
59 | name = NULL; | |
60 | ||
88183869 DK |
61 | /* Handle long section names as in PE. On reading, we want to |
62 | accept long names if the format permits them at all, regardless | |
63 | of the current state of the flag that dictates if we would generate | |
64 | them in outputs; this construct checks if that is the case by | |
65 | attempting to set the flag, without changing its state; the call | |
66 | will fail for formats that do not support long names at all. */ | |
67 | if (bfd_coff_set_long_section_names (abfd, bfd_coff_long_section_names (abfd)) | |
252b5132 RH |
68 | && hdr->s_name[0] == '/') |
69 | { | |
70 | char buf[SCNNMLEN]; | |
71 | long strindex; | |
72 | char *p; | |
73 | const char *strings; | |
74 | ||
0408dee6 | 75 | /* Flag that this BFD uses long names, even though the format might |
07d6d2b8 AM |
76 | expect them to be off by default. This won't directly affect the |
77 | format of any output BFD created from this one, but the information | |
78 | can be used to decide what to do. */ | |
0408dee6 | 79 | bfd_coff_set_long_section_names (abfd, TRUE); |
252b5132 RH |
80 | memcpy (buf, hdr->s_name + 1, SCNNMLEN - 1); |
81 | buf[SCNNMLEN - 1] = '\0'; | |
82 | strindex = strtol (buf, &p, 10); | |
83 | if (*p == '\0' && strindex >= 0) | |
84 | { | |
85 | strings = _bfd_coff_read_string_table (abfd); | |
86 | if (strings == NULL) | |
b34976b6 | 87 | return FALSE; |
5a3f568b NC |
88 | if ((bfd_size_type)(strindex + 2) >= obj_coff_strings_len (abfd)) |
89 | return FALSE; | |
252b5132 | 90 | strings += strindex; |
a50b1753 | 91 | name = (char *) bfd_alloc (abfd, |
07d6d2b8 | 92 | (bfd_size_type) strlen (strings) + 1 + 1); |
252b5132 | 93 | if (name == NULL) |
b34976b6 | 94 | return FALSE; |
252b5132 RH |
95 | strcpy (name, strings); |
96 | } | |
97 | } | |
98 | ||
99 | if (name == NULL) | |
100 | { | |
101 | /* Assorted wastage to null-terminate the name, thanks AT&T! */ | |
a50b1753 | 102 | name = (char *) bfd_alloc (abfd, |
07d6d2b8 | 103 | (bfd_size_type) sizeof (hdr->s_name) + 1 + 1); |
252b5132 | 104 | if (name == NULL) |
b34976b6 | 105 | return FALSE; |
252b5132 RH |
106 | strncpy (name, (char *) &hdr->s_name[0], sizeof (hdr->s_name)); |
107 | name[sizeof (hdr->s_name)] = 0; | |
108 | } | |
109 | ||
110 | return_section = bfd_make_section_anyway (abfd, name); | |
111 | if (return_section == NULL) | |
b34976b6 | 112 | return FALSE; |
252b5132 RH |
113 | |
114 | return_section->vma = hdr->s_vaddr; | |
115 | return_section->lma = hdr->s_paddr; | |
eea6121a | 116 | return_section->size = hdr->s_size; |
252b5132 RH |
117 | return_section->filepos = hdr->s_scnptr; |
118 | return_section->rel_filepos = hdr->s_relptr; | |
119 | return_section->reloc_count = hdr->s_nreloc; | |
120 | ||
121 | bfd_coff_set_alignment_hook (abfd, return_section, hdr); | |
122 | ||
123 | return_section->line_filepos = hdr->s_lnnoptr; | |
124 | ||
125 | return_section->lineno_count = hdr->s_nlnno; | |
126 | return_section->userdata = NULL; | |
c8e7bf0d | 127 | return_section->next = NULL; |
252b5132 | 128 | return_section->target_index = target_index; |
7c8ca0e4 NC |
129 | |
130 | if (! bfd_coff_styp_to_sec_flags_hook (abfd, hdr, name, return_section, | |
131 | & flags)) | |
b34976b6 | 132 | result = FALSE; |
dc810e39 | 133 | |
7c8ca0e4 | 134 | return_section->flags = flags; |
252b5132 RH |
135 | |
136 | /* At least on i386-coff, the line number count for a shared library | |
137 | section must be ignored. */ | |
138 | if ((return_section->flags & SEC_COFF_SHARED_LIBRARY) != 0) | |
139 | return_section->lineno_count = 0; | |
140 | ||
141 | if (hdr->s_nreloc != 0) | |
142 | return_section->flags |= SEC_RELOC; | |
c8e7bf0d | 143 | /* FIXME: should this check 'hdr->s_size > 0'. */ |
252b5132 RH |
144 | if (hdr->s_scnptr != 0) |
145 | return_section->flags |= SEC_HAS_CONTENTS; | |
7c8ca0e4 | 146 | |
a29a8af8 KT |
147 | /* Compress/decompress DWARF debug sections with names: .debug_* and |
148 | .zdebug_*, after the section flags is set. */ | |
149 | if ((flags & SEC_DEBUGGING) | |
a1165289 | 150 | && strlen (name) > 7 |
a29a8af8 | 151 | && ((name[1] == 'd' && name[6] == '_') |
a1165289 | 152 | || (strlen (name) > 8 && name[1] == 'z' && name[7] == '_'))) |
a29a8af8 KT |
153 | { |
154 | enum { nothing, compress, decompress } action = nothing; | |
155 | char *new_name = NULL; | |
156 | ||
157 | if (bfd_is_section_compressed (abfd, return_section)) | |
158 | { | |
159 | /* Compressed section. Check if we should decompress. */ | |
160 | if ((abfd->flags & BFD_DECOMPRESS)) | |
161 | action = decompress; | |
162 | } | |
163 | else if (!bfd_is_section_compressed (abfd, return_section)) | |
164 | { | |
165 | /* Normal section. Check if we should compress. */ | |
166 | if ((abfd->flags & BFD_COMPRESS) && return_section->size != 0) | |
167 | action = compress; | |
168 | } | |
169 | ||
170 | switch (action) | |
171 | { | |
172 | case nothing: | |
173 | break; | |
174 | case compress: | |
175 | if (!bfd_init_section_compress_status (abfd, return_section)) | |
176 | { | |
4eca0228 | 177 | _bfd_error_handler |
695344c0 | 178 | /* xgettext: c-format */ |
871b3ab2 | 179 | (_("%pB: unable to initialize compress status for section %s"), |
a29a8af8 KT |
180 | abfd, name); |
181 | return FALSE; | |
182 | } | |
273a4985 | 183 | if (return_section->compress_status == COMPRESS_SECTION_DONE) |
a29a8af8 | 184 | { |
273a4985 JT |
185 | if (name[1] != 'z') |
186 | { | |
187 | unsigned int len = strlen (name); | |
188 | ||
189 | new_name = bfd_alloc (abfd, len + 2); | |
190 | if (new_name == NULL) | |
191 | return FALSE; | |
192 | new_name[0] = '.'; | |
193 | new_name[1] = 'z'; | |
194 | memcpy (new_name + 2, name + 1, len); | |
195 | } | |
a29a8af8 | 196 | } |
07d6d2b8 | 197 | break; |
a29a8af8 KT |
198 | case decompress: |
199 | if (!bfd_init_section_decompress_status (abfd, return_section)) | |
200 | { | |
4eca0228 | 201 | _bfd_error_handler |
695344c0 | 202 | /* xgettext: c-format */ |
871b3ab2 | 203 | (_("%pB: unable to initialize decompress status for section %s"), |
a29a8af8 KT |
204 | abfd, name); |
205 | return FALSE; | |
206 | } | |
207 | if (name[1] == 'z') | |
208 | { | |
209 | unsigned int len = strlen (name); | |
210 | ||
211 | new_name = bfd_alloc (abfd, len); | |
212 | if (new_name == NULL) | |
213 | return FALSE; | |
214 | new_name[0] = '.'; | |
215 | memcpy (new_name + 1, name + 2, len - 1); | |
216 | } | |
217 | break; | |
218 | } | |
219 | if (new_name != NULL) | |
fd361982 | 220 | bfd_rename_section (return_section, new_name); |
a29a8af8 KT |
221 | } |
222 | ||
7c8ca0e4 | 223 | return result; |
252b5132 RH |
224 | } |
225 | ||
226 | /* Read in a COFF object and make it into a BFD. This is used by | |
227 | ECOFF as well. */ | |
ce63b7b3 KT |
228 | const bfd_target * |
229 | coff_real_object_p (bfd *, | |
07d6d2b8 AM |
230 | unsigned, |
231 | struct internal_filehdr *, | |
232 | struct internal_aouthdr *); | |
ce63b7b3 | 233 | const bfd_target * |
c8e7bf0d NC |
234 | coff_real_object_p (bfd *abfd, |
235 | unsigned nscns, | |
236 | struct internal_filehdr *internal_f, | |
237 | struct internal_aouthdr *internal_a) | |
252b5132 RH |
238 | { |
239 | flagword oflags = abfd->flags; | |
240 | bfd_vma ostart = bfd_get_start_address (abfd); | |
c8e7bf0d NC |
241 | void * tdata; |
242 | void * tdata_save; | |
243 | bfd_size_type readsize; /* Length of file_info. */ | |
252b5132 RH |
244 | unsigned int scnhsz; |
245 | char *external_sections; | |
246 | ||
247 | if (!(internal_f->f_flags & F_RELFLG)) | |
248 | abfd->flags |= HAS_RELOC; | |
249 | if ((internal_f->f_flags & F_EXEC)) | |
250 | abfd->flags |= EXEC_P; | |
251 | if (!(internal_f->f_flags & F_LNNO)) | |
252 | abfd->flags |= HAS_LINENO; | |
253 | if (!(internal_f->f_flags & F_LSYMS)) | |
254 | abfd->flags |= HAS_LOCALS; | |
255 | ||
256 | /* FIXME: How can we set D_PAGED correctly? */ | |
257 | if ((internal_f->f_flags & F_EXEC) != 0) | |
258 | abfd->flags |= D_PAGED; | |
259 | ||
ed48ec2e | 260 | abfd->symcount = internal_f->f_nsyms; |
252b5132 RH |
261 | if (internal_f->f_nsyms) |
262 | abfd->flags |= HAS_SYMS; | |
263 | ||
264 | if (internal_a != (struct internal_aouthdr *) NULL) | |
ed48ec2e | 265 | abfd->start_address = internal_a->entry; |
252b5132 | 266 | else |
ed48ec2e | 267 | abfd->start_address = 0; |
252b5132 RH |
268 | |
269 | /* Set up the tdata area. ECOFF uses its own routine, and overrides | |
270 | abfd->flags. */ | |
487e54f2 | 271 | tdata_save = abfd->tdata.any; |
c8e7bf0d | 272 | tdata = bfd_coff_mkobject_hook (abfd, (void *) internal_f, (void *) internal_a); |
252b5132 | 273 | if (tdata == NULL) |
487e54f2 | 274 | goto fail2; |
252b5132 RH |
275 | |
276 | scnhsz = bfd_coff_scnhsz (abfd); | |
dc810e39 | 277 | readsize = (bfd_size_type) nscns * scnhsz; |
a50b1753 | 278 | external_sections = (char *) bfd_alloc (abfd, readsize); |
252b5132 RH |
279 | if (!external_sections) |
280 | goto fail; | |
281 | ||
c8e7bf0d | 282 | if (bfd_bread ((void *) external_sections, readsize, abfd) != readsize) |
252b5132 RH |
283 | goto fail; |
284 | ||
363d7b14 | 285 | /* Set the arch/mach *before* swapping in sections; section header swapping |
244148ad | 286 | may depend on arch/mach info. */ |
c8e7bf0d | 287 | if (! bfd_coff_set_arch_mach_hook (abfd, (void *) internal_f)) |
363d7b14 TW |
288 | goto fail; |
289 | ||
e16bb312 | 290 | /* Now copy data as required; construct all asections etc. */ |
252b5132 RH |
291 | if (nscns != 0) |
292 | { | |
293 | unsigned int i; | |
294 | for (i = 0; i < nscns; i++) | |
295 | { | |
296 | struct internal_scnhdr tmp; | |
297 | bfd_coff_swap_scnhdr_in (abfd, | |
c8e7bf0d NC |
298 | (void *) (external_sections + i * scnhsz), |
299 | (void *) & tmp); | |
252b5132 RH |
300 | if (! make_a_section_from_file (abfd, &tmp, i + 1)) |
301 | goto fail; | |
302 | } | |
303 | } | |
304 | ||
252b5132 RH |
305 | return abfd->xvec; |
306 | ||
307 | fail: | |
308 | bfd_release (abfd, tdata); | |
487e54f2 AM |
309 | fail2: |
310 | abfd->tdata.any = tdata_save; | |
252b5132 | 311 | abfd->flags = oflags; |
ed48ec2e | 312 | abfd->start_address = ostart; |
252b5132 RH |
313 | return (const bfd_target *) NULL; |
314 | } | |
315 | ||
316 | /* Turn a COFF file into a BFD, but fail with bfd_error_wrong_format if it is | |
317 | not a COFF file. This is also used by ECOFF. */ | |
318 | ||
319 | const bfd_target * | |
c8e7bf0d | 320 | coff_object_p (bfd *abfd) |
252b5132 | 321 | { |
dc810e39 AM |
322 | bfd_size_type filhsz; |
323 | bfd_size_type aoutsz; | |
324 | unsigned int nscns; | |
c8e7bf0d | 325 | void * filehdr; |
252b5132 RH |
326 | struct internal_filehdr internal_f; |
327 | struct internal_aouthdr internal_a; | |
328 | ||
c8e7bf0d | 329 | /* Figure out how much to read. */ |
252b5132 RH |
330 | filhsz = bfd_coff_filhsz (abfd); |
331 | aoutsz = bfd_coff_aoutsz (abfd); | |
332 | ||
333 | filehdr = bfd_alloc (abfd, filhsz); | |
334 | if (filehdr == NULL) | |
487e54f2 | 335 | return NULL; |
dc810e39 | 336 | if (bfd_bread (filehdr, filhsz, abfd) != filhsz) |
252b5132 RH |
337 | { |
338 | if (bfd_get_error () != bfd_error_system_call) | |
339 | bfd_set_error (bfd_error_wrong_format); | |
487e54f2 AM |
340 | bfd_release (abfd, filehdr); |
341 | return NULL; | |
252b5132 RH |
342 | } |
343 | bfd_coff_swap_filehdr_in (abfd, filehdr, &internal_f); | |
344 | bfd_release (abfd, filehdr); | |
345 | ||
b8819ab2 NC |
346 | /* The XCOFF format has two sizes for the f_opthdr. SMALL_AOUTSZ |
347 | (less than aoutsz) used in object files and AOUTSZ (equal to | |
348 | aoutsz) in executables. The bfd_coff_swap_aouthdr_in function | |
349 | expects this header to be aoutsz bytes in length, so we use that | |
350 | value in the call to bfd_alloc below. But we must be careful to | |
351 | only read in f_opthdr bytes in the call to bfd_bread. We should | |
352 | also attempt to catch corrupt or non-COFF binaries with a strange | |
353 | value for f_opthdr. */ | |
82e51918 | 354 | if (! bfd_coff_bad_format_hook (abfd, &internal_f) |
95f7d9f7 | 355 | || internal_f.f_opthdr > aoutsz) |
252b5132 RH |
356 | { |
357 | bfd_set_error (bfd_error_wrong_format); | |
487e54f2 | 358 | return NULL; |
252b5132 RH |
359 | } |
360 | nscns = internal_f.f_nscns; | |
361 | ||
362 | if (internal_f.f_opthdr) | |
363 | { | |
c8e7bf0d | 364 | void * opthdr; |
252b5132 RH |
365 | |
366 | opthdr = bfd_alloc (abfd, aoutsz); | |
367 | if (opthdr == NULL) | |
487e54f2 | 368 | return NULL; |
dc810e39 | 369 | if (bfd_bread (opthdr, (bfd_size_type) internal_f.f_opthdr, abfd) |
252b5132 RH |
370 | != internal_f.f_opthdr) |
371 | { | |
487e54f2 AM |
372 | bfd_release (abfd, opthdr); |
373 | return NULL; | |
252b5132 | 374 | } |
a1165289 NC |
375 | /* PR 17512: file: 11056-1136-0.004. */ |
376 | if (internal_f.f_opthdr < aoutsz) | |
377 | memset (((char *) opthdr) + internal_f.f_opthdr, 0, aoutsz - internal_f.f_opthdr); | |
378 | ||
c8e7bf0d | 379 | bfd_coff_swap_aouthdr_in (abfd, opthdr, (void *) &internal_a); |
487e54f2 | 380 | bfd_release (abfd, opthdr); |
252b5132 RH |
381 | } |
382 | ||
383 | return coff_real_object_p (abfd, nscns, &internal_f, | |
384 | (internal_f.f_opthdr != 0 | |
385 | ? &internal_a | |
386 | : (struct internal_aouthdr *) NULL)); | |
387 | } | |
388 | ||
389 | /* Get the BFD section from a COFF symbol section number. */ | |
390 | ||
391 | asection * | |
91d6fa6a | 392 | coff_section_from_bfd_index (bfd *abfd, int section_index) |
252b5132 | 393 | { |
198beae2 | 394 | struct bfd_section *answer = abfd->sections; |
252b5132 | 395 | |
91d6fa6a | 396 | if (section_index == N_ABS) |
252b5132 | 397 | return bfd_abs_section_ptr; |
91d6fa6a | 398 | if (section_index == N_UNDEF) |
252b5132 | 399 | return bfd_und_section_ptr; |
91d6fa6a | 400 | if (section_index == N_DEBUG) |
252b5132 RH |
401 | return bfd_abs_section_ptr; |
402 | ||
403 | while (answer) | |
404 | { | |
91d6fa6a | 405 | if (answer->target_index == section_index) |
252b5132 RH |
406 | return answer; |
407 | answer = answer->next; | |
408 | } | |
409 | ||
410 | /* We should not reach this point, but the SCO 3.2v4 /lib/libc_s.a | |
411 | has a bad symbol table in biglitpow.o. */ | |
412 | return bfd_und_section_ptr; | |
413 | } | |
414 | ||
415 | /* Get the upper bound of a COFF symbol table. */ | |
416 | ||
417 | long | |
c8e7bf0d | 418 | coff_get_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
419 | { |
420 | if (!bfd_coff_slurp_symbol_table (abfd)) | |
421 | return -1; | |
422 | ||
423 | return (bfd_get_symcount (abfd) + 1) * (sizeof (coff_symbol_type *)); | |
424 | } | |
425 | ||
252b5132 RH |
426 | /* Canonicalize a COFF symbol table. */ |
427 | ||
428 | long | |
c8e7bf0d | 429 | coff_canonicalize_symtab (bfd *abfd, asymbol **alocation) |
252b5132 RH |
430 | { |
431 | unsigned int counter; | |
432 | coff_symbol_type *symbase; | |
433 | coff_symbol_type **location = (coff_symbol_type **) alocation; | |
434 | ||
435 | if (!bfd_coff_slurp_symbol_table (abfd)) | |
436 | return -1; | |
437 | ||
438 | symbase = obj_symbols (abfd); | |
439 | counter = bfd_get_symcount (abfd); | |
440 | while (counter-- > 0) | |
441 | *location++ = symbase++; | |
442 | ||
443 | *location = NULL; | |
444 | ||
445 | return bfd_get_symcount (abfd); | |
446 | } | |
447 | ||
448 | /* Get the name of a symbol. The caller must pass in a buffer of size | |
449 | >= SYMNMLEN + 1. */ | |
450 | ||
451 | const char * | |
c8e7bf0d NC |
452 | _bfd_coff_internal_syment_name (bfd *abfd, |
453 | const struct internal_syment *sym, | |
454 | char *buf) | |
252b5132 RH |
455 | { |
456 | /* FIXME: It's not clear this will work correctly if sizeof | |
457 | (_n_zeroes) != 4. */ | |
458 | if (sym->_n._n_n._n_zeroes != 0 | |
459 | || sym->_n._n_n._n_offset == 0) | |
460 | { | |
461 | memcpy (buf, sym->_n._n_name, SYMNMLEN); | |
462 | buf[SYMNMLEN] = '\0'; | |
463 | return buf; | |
464 | } | |
465 | else | |
466 | { | |
467 | const char *strings; | |
468 | ||
469 | BFD_ASSERT (sym->_n._n_n._n_offset >= STRING_SIZE_SIZE); | |
470 | strings = obj_coff_strings (abfd); | |
471 | if (strings == NULL) | |
472 | { | |
473 | strings = _bfd_coff_read_string_table (abfd); | |
474 | if (strings == NULL) | |
475 | return NULL; | |
476 | } | |
cdb602b1 NC |
477 | /* PR 17910: Only check for string overflow if the length has been set. |
478 | Some DLLs, eg those produced by Visual Studio, may not set the length field. */ | |
479 | if (obj_coff_strings_len (abfd) > 0 | |
480 | && sym->_n._n_n._n_offset >= obj_coff_strings_len (abfd)) | |
5a3f568b | 481 | return NULL; |
252b5132 RH |
482 | return strings + sym->_n._n_n._n_offset; |
483 | } | |
484 | } | |
485 | ||
486 | /* Read in and swap the relocs. This returns a buffer holding the | |
b34976b6 | 487 | relocs for section SEC in file ABFD. If CACHE is TRUE and |
252b5132 RH |
488 | INTERNAL_RELOCS is NULL, the relocs read in will be saved in case |
489 | the function is called again. If EXTERNAL_RELOCS is not NULL, it | |
490 | is a buffer large enough to hold the unswapped relocs. If | |
491 | INTERNAL_RELOCS is not NULL, it is a buffer large enough to hold | |
b34976b6 | 492 | the swapped relocs. If REQUIRE_INTERNAL is TRUE, then the return |
252b5132 RH |
493 | value must be INTERNAL_RELOCS. The function returns NULL on error. */ |
494 | ||
495 | struct internal_reloc * | |
c8e7bf0d NC |
496 | _bfd_coff_read_internal_relocs (bfd *abfd, |
497 | asection *sec, | |
498 | bfd_boolean cache, | |
499 | bfd_byte *external_relocs, | |
500 | bfd_boolean require_internal, | |
501 | struct internal_reloc *internal_relocs) | |
252b5132 RH |
502 | { |
503 | bfd_size_type relsz; | |
504 | bfd_byte *free_external = NULL; | |
505 | struct internal_reloc *free_internal = NULL; | |
506 | bfd_byte *erel; | |
507 | bfd_byte *erel_end; | |
508 | struct internal_reloc *irel; | |
dc810e39 | 509 | bfd_size_type amt; |
252b5132 | 510 | |
9d7038d3 MS |
511 | if (sec->reloc_count == 0) |
512 | return internal_relocs; /* Nothing to do. */ | |
513 | ||
252b5132 RH |
514 | if (coff_section_data (abfd, sec) != NULL |
515 | && coff_section_data (abfd, sec)->relocs != NULL) | |
516 | { | |
517 | if (! require_internal) | |
518 | return coff_section_data (abfd, sec)->relocs; | |
519 | memcpy (internal_relocs, coff_section_data (abfd, sec)->relocs, | |
520 | sec->reloc_count * sizeof (struct internal_reloc)); | |
521 | return internal_relocs; | |
522 | } | |
523 | ||
524 | relsz = bfd_coff_relsz (abfd); | |
525 | ||
dc810e39 | 526 | amt = sec->reloc_count * relsz; |
252b5132 RH |
527 | if (external_relocs == NULL) |
528 | { | |
a50b1753 | 529 | free_external = (bfd_byte *) bfd_malloc (amt); |
9d7038d3 | 530 | if (free_external == NULL) |
252b5132 RH |
531 | goto error_return; |
532 | external_relocs = free_external; | |
533 | } | |
534 | ||
535 | if (bfd_seek (abfd, sec->rel_filepos, SEEK_SET) != 0 | |
dc810e39 | 536 | || bfd_bread (external_relocs, amt, abfd) != amt) |
252b5132 RH |
537 | goto error_return; |
538 | ||
539 | if (internal_relocs == NULL) | |
540 | { | |
dc810e39 AM |
541 | amt = sec->reloc_count; |
542 | amt *= sizeof (struct internal_reloc); | |
a50b1753 | 543 | free_internal = (struct internal_reloc *) bfd_malloc (amt); |
9d7038d3 | 544 | if (free_internal == NULL) |
252b5132 RH |
545 | goto error_return; |
546 | internal_relocs = free_internal; | |
547 | } | |
548 | ||
549 | /* Swap in the relocs. */ | |
550 | erel = external_relocs; | |
551 | erel_end = erel + relsz * sec->reloc_count; | |
552 | irel = internal_relocs; | |
553 | for (; erel < erel_end; erel += relsz, irel++) | |
c8e7bf0d | 554 | bfd_coff_swap_reloc_in (abfd, (void *) erel, (void *) irel); |
252b5132 RH |
555 | |
556 | if (free_external != NULL) | |
557 | { | |
558 | free (free_external); | |
559 | free_external = NULL; | |
560 | } | |
561 | ||
9ee2139f | 562 | if (cache && free_internal != NULL) |
252b5132 | 563 | { |
9ee2139f | 564 | if (coff_section_data (abfd, sec) == NULL) |
252b5132 | 565 | { |
9ee2139f MS |
566 | amt = sizeof (struct coff_section_tdata); |
567 | sec->used_by_bfd = bfd_zalloc (abfd, amt); | |
568 | if (sec->used_by_bfd == NULL) | |
569 | goto error_return; | |
570 | coff_section_data (abfd, sec)->contents = NULL; | |
252b5132 | 571 | } |
9ee2139f | 572 | coff_section_data (abfd, sec)->relocs = free_internal; |
252b5132 RH |
573 | } |
574 | ||
575 | return internal_relocs; | |
576 | ||
577 | error_return: | |
578 | if (free_external != NULL) | |
579 | free (free_external); | |
580 | if (free_internal != NULL) | |
581 | free (free_internal); | |
582 | return NULL; | |
583 | } | |
584 | ||
585 | /* Set lineno_count for the output sections of a COFF file. */ | |
586 | ||
587 | int | |
c8e7bf0d | 588 | coff_count_linenumbers (bfd *abfd) |
252b5132 RH |
589 | { |
590 | unsigned int limit = bfd_get_symcount (abfd); | |
591 | unsigned int i; | |
592 | int total = 0; | |
593 | asymbol **p; | |
594 | asection *s; | |
595 | ||
596 | if (limit == 0) | |
597 | { | |
598 | /* This may be from the backend linker, in which case the | |
07d6d2b8 | 599 | lineno_count in the sections is correct. */ |
252b5132 RH |
600 | for (s = abfd->sections; s != NULL; s = s->next) |
601 | total += s->lineno_count; | |
602 | return total; | |
603 | } | |
604 | ||
605 | for (s = abfd->sections; s != NULL; s = s->next) | |
606 | BFD_ASSERT (s->lineno_count == 0); | |
607 | ||
608 | for (p = abfd->outsymbols, i = 0; i < limit; i++, p++) | |
609 | { | |
610 | asymbol *q_maybe = *p; | |
611 | ||
9bd09e22 | 612 | if (bfd_family_coff (bfd_asymbol_bfd (q_maybe))) |
252b5132 RH |
613 | { |
614 | coff_symbol_type *q = coffsymbol (q_maybe); | |
615 | ||
616 | /* The AIX 4.1 compiler can sometimes generate line numbers | |
07d6d2b8 AM |
617 | attached to debugging symbols. We try to simply ignore |
618 | those here. */ | |
252b5132 RH |
619 | if (q->lineno != NULL |
620 | && q->symbol.section->owner != NULL) | |
621 | { | |
622 | /* This symbol has line numbers. Increment the owning | |
07d6d2b8 | 623 | section's linenumber count. */ |
252b5132 RH |
624 | alent *l = q->lineno; |
625 | ||
84c254c6 | 626 | do |
252b5132 | 627 | { |
84c254c6 | 628 | asection * sec = q->symbol.section->output_section; |
b34976b6 | 629 | |
84c254c6 NC |
630 | /* Do not try to update fields in read-only sections. */ |
631 | if (! bfd_is_const_section (sec)) | |
632 | sec->lineno_count ++; | |
633 | ||
252b5132 | 634 | ++total; |
252b5132 RH |
635 | ++l; |
636 | } | |
84c254c6 | 637 | while (l->line_number != 0); |
252b5132 RH |
638 | } |
639 | } | |
640 | } | |
641 | ||
642 | return total; | |
643 | } | |
644 | ||
252b5132 | 645 | static void |
c8e7bf0d NC |
646 | fixup_symbol_value (bfd *abfd, |
647 | coff_symbol_type *coff_symbol_ptr, | |
648 | struct internal_syment *syment) | |
252b5132 | 649 | { |
c8e7bf0d | 650 | /* Normalize the symbol flags. */ |
68ffbac6 | 651 | if (coff_symbol_ptr->symbol.section |
ac38308c | 652 | && bfd_is_com_section (coff_symbol_ptr->symbol.section)) |
252b5132 | 653 | { |
c8e7bf0d | 654 | /* A common symbol is undefined with a value. */ |
252b5132 RH |
655 | syment->n_scnum = N_UNDEF; |
656 | syment->n_value = coff_symbol_ptr->symbol.value; | |
657 | } | |
703153b5 ILT |
658 | else if ((coff_symbol_ptr->symbol.flags & BSF_DEBUGGING) != 0 |
659 | && (coff_symbol_ptr->symbol.flags & BSF_DEBUGGING_RELOC) == 0) | |
252b5132 RH |
660 | { |
661 | syment->n_value = coff_symbol_ptr->symbol.value; | |
662 | } | |
663 | else if (bfd_is_und_section (coff_symbol_ptr->symbol.section)) | |
664 | { | |
665 | syment->n_scnum = N_UNDEF; | |
666 | syment->n_value = 0; | |
667 | } | |
7bb9db4d | 668 | /* FIXME: Do we need to handle the absolute section here? */ |
252b5132 RH |
669 | else |
670 | { | |
671 | if (coff_symbol_ptr->symbol.section) | |
672 | { | |
673 | syment->n_scnum = | |
674 | coff_symbol_ptr->symbol.section->output_section->target_index; | |
675 | ||
676 | syment->n_value = (coff_symbol_ptr->symbol.value | |
677 | + coff_symbol_ptr->symbol.section->output_offset); | |
678 | if (! obj_pe (abfd)) | |
07d6d2b8 AM |
679 | { |
680 | syment->n_value += (syment->n_sclass == C_STATLAB) | |
681 | ? coff_symbol_ptr->symbol.section->output_section->lma | |
682 | : coff_symbol_ptr->symbol.section->output_section->vma; | |
683 | } | |
252b5132 RH |
684 | } |
685 | else | |
686 | { | |
687 | BFD_ASSERT (0); | |
688 | /* This can happen, but I don't know why yet (steve@cygnus.com) */ | |
689 | syment->n_scnum = N_ABS; | |
690 | syment->n_value = coff_symbol_ptr->symbol.value; | |
691 | } | |
692 | } | |
693 | } | |
694 | ||
695 | /* Run through all the symbols in the symbol table and work out what | |
696 | their indexes into the symbol table will be when output. | |
697 | ||
698 | Coff requires that each C_FILE symbol points to the next one in the | |
699 | chain, and that the last one points to the first external symbol. We | |
700 | do that here too. */ | |
701 | ||
b34976b6 | 702 | bfd_boolean |
c8e7bf0d | 703 | coff_renumber_symbols (bfd *bfd_ptr, int *first_undef) |
252b5132 RH |
704 | { |
705 | unsigned int symbol_count = bfd_get_symcount (bfd_ptr); | |
706 | asymbol **symbol_ptr_ptr = bfd_ptr->outsymbols; | |
707 | unsigned int native_index = 0; | |
c8e7bf0d | 708 | struct internal_syment *last_file = NULL; |
252b5132 RH |
709 | unsigned int symbol_index; |
710 | ||
711 | /* COFF demands that undefined symbols come after all other symbols. | |
712 | Since we don't need to impose this extra knowledge on all our | |
713 | client programs, deal with that here. Sort the symbol table; | |
714 | just move the undefined symbols to the end, leaving the rest | |
715 | alone. The O'Reilly book says that defined global symbols come | |
716 | at the end before the undefined symbols, so we do that here as | |
717 | well. */ | |
718 | /* @@ Do we have some condition we could test for, so we don't always | |
719 | have to do this? I don't think relocatability is quite right, but | |
720 | I'm not certain. [raeburn:19920508.1711EST] */ | |
721 | { | |
722 | asymbol **newsyms; | |
723 | unsigned int i; | |
dc810e39 | 724 | bfd_size_type amt; |
252b5132 | 725 | |
dc810e39 | 726 | amt = sizeof (asymbol *) * ((bfd_size_type) symbol_count + 1); |
a50b1753 | 727 | newsyms = (asymbol **) bfd_alloc (bfd_ptr, amt); |
252b5132 | 728 | if (!newsyms) |
b34976b6 | 729 | return FALSE; |
252b5132 RH |
730 | bfd_ptr->outsymbols = newsyms; |
731 | for (i = 0; i < symbol_count; i++) | |
732 | if ((symbol_ptr_ptr[i]->flags & BSF_NOT_AT_END) != 0 | |
733 | || (!bfd_is_und_section (symbol_ptr_ptr[i]->section) | |
734 | && !bfd_is_com_section (symbol_ptr_ptr[i]->section) | |
735 | && ((symbol_ptr_ptr[i]->flags & BSF_FUNCTION) != 0 | |
736 | || ((symbol_ptr_ptr[i]->flags & (BSF_GLOBAL | BSF_WEAK)) | |
737 | == 0)))) | |
738 | *newsyms++ = symbol_ptr_ptr[i]; | |
739 | ||
740 | for (i = 0; i < symbol_count; i++) | |
741 | if ((symbol_ptr_ptr[i]->flags & BSF_NOT_AT_END) == 0 | |
742 | && !bfd_is_und_section (symbol_ptr_ptr[i]->section) | |
743 | && (bfd_is_com_section (symbol_ptr_ptr[i]->section) | |
744 | || ((symbol_ptr_ptr[i]->flags & BSF_FUNCTION) == 0 | |
745 | && ((symbol_ptr_ptr[i]->flags & (BSF_GLOBAL | BSF_WEAK)) | |
746 | != 0)))) | |
747 | *newsyms++ = symbol_ptr_ptr[i]; | |
748 | ||
749 | *first_undef = newsyms - bfd_ptr->outsymbols; | |
750 | ||
751 | for (i = 0; i < symbol_count; i++) | |
752 | if ((symbol_ptr_ptr[i]->flags & BSF_NOT_AT_END) == 0 | |
753 | && bfd_is_und_section (symbol_ptr_ptr[i]->section)) | |
754 | *newsyms++ = symbol_ptr_ptr[i]; | |
755 | *newsyms = (asymbol *) NULL; | |
756 | symbol_ptr_ptr = bfd_ptr->outsymbols; | |
757 | } | |
758 | ||
759 | for (symbol_index = 0; symbol_index < symbol_count; symbol_index++) | |
760 | { | |
f4943d82 | 761 | coff_symbol_type *coff_symbol_ptr; |
a5c71af8 | 762 | |
f4943d82 | 763 | coff_symbol_ptr = coff_symbol_from (symbol_ptr_ptr[symbol_index]); |
244148ad | 764 | symbol_ptr_ptr[symbol_index]->udata.i = symbol_index; |
252b5132 RH |
765 | if (coff_symbol_ptr && coff_symbol_ptr->native) |
766 | { | |
767 | combined_entry_type *s = coff_symbol_ptr->native; | |
768 | int i; | |
769 | ||
a5c71af8 | 770 | BFD_ASSERT (s->is_sym); |
252b5132 RH |
771 | if (s->u.syment.n_sclass == C_FILE) |
772 | { | |
c8e7bf0d | 773 | if (last_file != NULL) |
252b5132 RH |
774 | last_file->n_value = native_index; |
775 | last_file = &(s->u.syment); | |
776 | } | |
777 | else | |
c8e7bf0d NC |
778 | /* Modify the symbol values according to their section and |
779 | type. */ | |
780 | fixup_symbol_value (bfd_ptr, coff_symbol_ptr, &(s->u.syment)); | |
252b5132 | 781 | |
252b5132 RH |
782 | for (i = 0; i < s->u.syment.n_numaux + 1; i++) |
783 | s[i].offset = native_index++; | |
784 | } | |
785 | else | |
c8e7bf0d | 786 | native_index++; |
252b5132 | 787 | } |
c8e7bf0d | 788 | |
252b5132 RH |
789 | obj_conv_table_size (bfd_ptr) = native_index; |
790 | ||
b34976b6 | 791 | return TRUE; |
252b5132 RH |
792 | } |
793 | ||
794 | /* Run thorough the symbol table again, and fix it so that all | |
795 | pointers to entries are changed to the entries' index in the output | |
796 | symbol table. */ | |
797 | ||
798 | void | |
c8e7bf0d | 799 | coff_mangle_symbols (bfd *bfd_ptr) |
252b5132 RH |
800 | { |
801 | unsigned int symbol_count = bfd_get_symcount (bfd_ptr); | |
802 | asymbol **symbol_ptr_ptr = bfd_ptr->outsymbols; | |
803 | unsigned int symbol_index; | |
804 | ||
805 | for (symbol_index = 0; symbol_index < symbol_count; symbol_index++) | |
806 | { | |
f4943d82 | 807 | coff_symbol_type *coff_symbol_ptr; |
252b5132 | 808 | |
f4943d82 | 809 | coff_symbol_ptr = coff_symbol_from (symbol_ptr_ptr[symbol_index]); |
252b5132 RH |
810 | if (coff_symbol_ptr && coff_symbol_ptr->native) |
811 | { | |
812 | int i; | |
813 | combined_entry_type *s = coff_symbol_ptr->native; | |
814 | ||
a5c71af8 | 815 | BFD_ASSERT (s->is_sym); |
252b5132 RH |
816 | if (s->fix_value) |
817 | { | |
818 | /* FIXME: We should use a union here. */ | |
dc810e39 | 819 | s->u.syment.n_value = |
d2df793a NC |
820 | (bfd_hostptr_t) ((combined_entry_type *) |
821 | ((bfd_hostptr_t) s->u.syment.n_value))->offset; | |
252b5132 RH |
822 | s->fix_value = 0; |
823 | } | |
824 | if (s->fix_line) | |
825 | { | |
826 | /* The value is the offset into the line number entries | |
07d6d2b8 AM |
827 | for the symbol's section. On output, the symbol's |
828 | section should be N_DEBUG. */ | |
252b5132 RH |
829 | s->u.syment.n_value = |
830 | (coff_symbol_ptr->symbol.section->output_section->line_filepos | |
831 | + s->u.syment.n_value * bfd_coff_linesz (bfd_ptr)); | |
832 | coff_symbol_ptr->symbol.section = | |
833 | coff_section_from_bfd_index (bfd_ptr, N_DEBUG); | |
834 | BFD_ASSERT (coff_symbol_ptr->symbol.flags & BSF_DEBUGGING); | |
835 | } | |
836 | for (i = 0; i < s->u.syment.n_numaux; i++) | |
837 | { | |
838 | combined_entry_type *a = s + i + 1; | |
4b24dd1a | 839 | |
a5c71af8 | 840 | BFD_ASSERT (! a->is_sym); |
252b5132 RH |
841 | if (a->fix_tag) |
842 | { | |
843 | a->u.auxent.x_sym.x_tagndx.l = | |
844 | a->u.auxent.x_sym.x_tagndx.p->offset; | |
845 | a->fix_tag = 0; | |
846 | } | |
847 | if (a->fix_end) | |
848 | { | |
849 | a->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l = | |
850 | a->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p->offset; | |
851 | a->fix_end = 0; | |
852 | } | |
853 | if (a->fix_scnlen) | |
854 | { | |
855 | a->u.auxent.x_csect.x_scnlen.l = | |
856 | a->u.auxent.x_csect.x_scnlen.p->offset; | |
857 | a->fix_scnlen = 0; | |
858 | } | |
859 | } | |
860 | } | |
861 | } | |
862 | } | |
863 | ||
864 | static void | |
c8e7bf0d NC |
865 | coff_fix_symbol_name (bfd *abfd, |
866 | asymbol *symbol, | |
867 | combined_entry_type *native, | |
868 | bfd_size_type *string_size_p, | |
869 | asection **debug_string_section_p, | |
870 | bfd_size_type *debug_string_size_p) | |
252b5132 RH |
871 | { |
872 | unsigned int name_length; | |
873 | union internal_auxent *auxent; | |
874 | char *name = (char *) (symbol->name); | |
875 | ||
c8e7bf0d | 876 | if (name == NULL) |
252b5132 | 877 | { |
c8e7bf0d | 878 | /* COFF symbols always have names, so we'll make one up. */ |
252b5132 RH |
879 | symbol->name = "strange"; |
880 | name = (char *) symbol->name; | |
881 | } | |
882 | name_length = strlen (name); | |
883 | ||
a5c71af8 | 884 | BFD_ASSERT (native->is_sym); |
252b5132 RH |
885 | if (native->u.syment.n_sclass == C_FILE |
886 | && native->u.syment.n_numaux > 0) | |
887 | { | |
692b7d62 ILT |
888 | unsigned int filnmlen; |
889 | ||
7f6d05e8 CP |
890 | if (bfd_coff_force_symnames_in_strings (abfd)) |
891 | { | |
07d6d2b8 | 892 | native->u.syment._n._n_n._n_offset = |
7f6d05e8 CP |
893 | (*string_size_p + STRING_SIZE_SIZE); |
894 | native->u.syment._n._n_n._n_zeroes = 0; | |
895 | *string_size_p += 6; /* strlen(".file") + 1 */ | |
896 | } | |
897 | else | |
07d6d2b8 | 898 | strncpy (native->u.syment._n._n_name, ".file", SYMNMLEN); |
7f6d05e8 | 899 | |
a5c71af8 | 900 | BFD_ASSERT (! (native + 1)->is_sym); |
252b5132 RH |
901 | auxent = &(native + 1)->u.auxent; |
902 | ||
692b7d62 ILT |
903 | filnmlen = bfd_coff_filnmlen (abfd); |
904 | ||
252b5132 RH |
905 | if (bfd_coff_long_filenames (abfd)) |
906 | { | |
692b7d62 | 907 | if (name_length <= filnmlen) |
c8e7bf0d | 908 | strncpy (auxent->x_file.x_fname, name, filnmlen); |
252b5132 RH |
909 | else |
910 | { | |
911 | auxent->x_file.x_n.x_offset = *string_size_p + STRING_SIZE_SIZE; | |
912 | auxent->x_file.x_n.x_zeroes = 0; | |
913 | *string_size_p += name_length + 1; | |
914 | } | |
915 | } | |
916 | else | |
917 | { | |
692b7d62 ILT |
918 | strncpy (auxent->x_file.x_fname, name, filnmlen); |
919 | if (name_length > filnmlen) | |
920 | name[filnmlen] = '\0'; | |
252b5132 RH |
921 | } |
922 | } | |
923 | else | |
924 | { | |
7f6d05e8 | 925 | if (name_length <= SYMNMLEN && !bfd_coff_force_symnames_in_strings (abfd)) |
c8e7bf0d NC |
926 | /* This name will fit into the symbol neatly. */ |
927 | strncpy (native->u.syment._n._n_name, symbol->name, SYMNMLEN); | |
928 | ||
252b5132 RH |
929 | else if (!bfd_coff_symname_in_debug (abfd, &native->u.syment)) |
930 | { | |
931 | native->u.syment._n._n_n._n_offset = (*string_size_p | |
932 | + STRING_SIZE_SIZE); | |
933 | native->u.syment._n._n_n._n_zeroes = 0; | |
934 | *string_size_p += name_length + 1; | |
935 | } | |
936 | else | |
937 | { | |
dc810e39 | 938 | file_ptr filepos; |
7f6d05e8 CP |
939 | bfd_byte buf[4]; |
940 | int prefix_len = bfd_coff_debug_string_prefix_length (abfd); | |
252b5132 RH |
941 | |
942 | /* This name should be written into the .debug section. For | |
943 | some reason each name is preceded by a two byte length | |
944 | and also followed by a null byte. FIXME: We assume that | |
945 | the .debug section has already been created, and that it | |
946 | is large enough. */ | |
947 | if (*debug_string_section_p == (asection *) NULL) | |
948 | *debug_string_section_p = bfd_get_section_by_name (abfd, ".debug"); | |
949 | filepos = bfd_tell (abfd); | |
7f6d05e8 | 950 | if (prefix_len == 4) |
dc810e39 | 951 | bfd_put_32 (abfd, (bfd_vma) (name_length + 1), buf); |
7f6d05e8 | 952 | else |
dc810e39 | 953 | bfd_put_16 (abfd, (bfd_vma) (name_length + 1), buf); |
7f6d05e8 | 954 | |
252b5132 RH |
955 | if (!bfd_set_section_contents (abfd, |
956 | *debug_string_section_p, | |
c8e7bf0d | 957 | (void *) buf, |
252b5132 | 958 | (file_ptr) *debug_string_size_p, |
7f6d05e8 | 959 | (bfd_size_type) prefix_len) |
252b5132 RH |
960 | || !bfd_set_section_contents (abfd, |
961 | *debug_string_section_p, | |
c8e7bf0d | 962 | (void *) symbol->name, |
dc810e39 AM |
963 | (file_ptr) (*debug_string_size_p |
964 | + prefix_len), | |
252b5132 RH |
965 | (bfd_size_type) name_length + 1)) |
966 | abort (); | |
967 | if (bfd_seek (abfd, filepos, SEEK_SET) != 0) | |
968 | abort (); | |
244148ad | 969 | native->u.syment._n._n_n._n_offset = |
7f6d05e8 | 970 | *debug_string_size_p + prefix_len; |
252b5132 | 971 | native->u.syment._n._n_n._n_zeroes = 0; |
7f6d05e8 | 972 | *debug_string_size_p += name_length + 1 + prefix_len; |
252b5132 RH |
973 | } |
974 | } | |
975 | } | |
976 | ||
977 | /* We need to keep track of the symbol index so that when we write out | |
978 | the relocs we can get the index for a symbol. This method is a | |
979 | hack. FIXME. */ | |
980 | ||
981 | #define set_index(symbol, idx) ((symbol)->udata.i = (idx)) | |
982 | ||
983 | /* Write a symbol out to a COFF file. */ | |
984 | ||
b34976b6 | 985 | static bfd_boolean |
c8e7bf0d NC |
986 | coff_write_symbol (bfd *abfd, |
987 | asymbol *symbol, | |
988 | combined_entry_type *native, | |
989 | bfd_vma *written, | |
990 | bfd_size_type *string_size_p, | |
991 | asection **debug_string_section_p, | |
992 | bfd_size_type *debug_string_size_p) | |
252b5132 RH |
993 | { |
994 | unsigned int numaux = native->u.syment.n_numaux; | |
995 | int type = native->u.syment.n_type; | |
a50b1753 | 996 | int n_sclass = (int) native->u.syment.n_sclass; |
88e59394 DK |
997 | asection *output_section = symbol->section->output_section |
998 | ? symbol->section->output_section | |
999 | : symbol->section; | |
c8e7bf0d | 1000 | void * buf; |
252b5132 RH |
1001 | bfd_size_type symesz; |
1002 | ||
a5c71af8 NC |
1003 | BFD_ASSERT (native->is_sym); |
1004 | ||
252b5132 RH |
1005 | if (native->u.syment.n_sclass == C_FILE) |
1006 | symbol->flags |= BSF_DEBUGGING; | |
1007 | ||
1008 | if (symbol->flags & BSF_DEBUGGING | |
1009 | && bfd_is_abs_section (symbol->section)) | |
c8e7bf0d NC |
1010 | native->u.syment.n_scnum = N_DEBUG; |
1011 | ||
252b5132 | 1012 | else if (bfd_is_abs_section (symbol->section)) |
c8e7bf0d NC |
1013 | native->u.syment.n_scnum = N_ABS; |
1014 | ||
252b5132 | 1015 | else if (bfd_is_und_section (symbol->section)) |
c8e7bf0d NC |
1016 | native->u.syment.n_scnum = N_UNDEF; |
1017 | ||
252b5132 | 1018 | else |
c8e7bf0d | 1019 | native->u.syment.n_scnum = |
88e59394 | 1020 | output_section->target_index; |
252b5132 RH |
1021 | |
1022 | coff_fix_symbol_name (abfd, symbol, native, string_size_p, | |
1023 | debug_string_section_p, debug_string_size_p); | |
1024 | ||
1025 | symesz = bfd_coff_symesz (abfd); | |
1026 | buf = bfd_alloc (abfd, symesz); | |
1027 | if (!buf) | |
b34976b6 | 1028 | return FALSE; |
252b5132 | 1029 | bfd_coff_swap_sym_out (abfd, &native->u.syment, buf); |
dc810e39 | 1030 | if (bfd_bwrite (buf, symesz, abfd) != symesz) |
b34976b6 | 1031 | return FALSE; |
252b5132 RH |
1032 | bfd_release (abfd, buf); |
1033 | ||
1034 | if (native->u.syment.n_numaux > 0) | |
1035 | { | |
1036 | bfd_size_type auxesz; | |
1037 | unsigned int j; | |
1038 | ||
1039 | auxesz = bfd_coff_auxesz (abfd); | |
1040 | buf = bfd_alloc (abfd, auxesz); | |
1041 | if (!buf) | |
b34976b6 | 1042 | return FALSE; |
252b5132 RH |
1043 | for (j = 0; j < native->u.syment.n_numaux; j++) |
1044 | { | |
a5c71af8 | 1045 | BFD_ASSERT (! (native + j + 1)->is_sym); |
252b5132 RH |
1046 | bfd_coff_swap_aux_out (abfd, |
1047 | &((native + j + 1)->u.auxent), | |
96d56e9f | 1048 | type, n_sclass, (int) j, |
252b5132 RH |
1049 | native->u.syment.n_numaux, |
1050 | buf); | |
dc810e39 | 1051 | if (bfd_bwrite (buf, auxesz, abfd) != auxesz) |
b34976b6 | 1052 | return FALSE; |
252b5132 RH |
1053 | } |
1054 | bfd_release (abfd, buf); | |
1055 | } | |
1056 | ||
1057 | /* Store the index for use when we write out the relocs. */ | |
1058 | set_index (symbol, *written); | |
1059 | ||
1060 | *written += numaux + 1; | |
b34976b6 | 1061 | return TRUE; |
252b5132 RH |
1062 | } |
1063 | ||
1064 | /* Write out a symbol to a COFF file that does not come from a COFF | |
1065 | file originally. This symbol may have been created by the linker, | |
1066 | or we may be linking a non COFF file to a COFF file. */ | |
1067 | ||
e7ebb214 | 1068 | bfd_boolean |
c8e7bf0d NC |
1069 | coff_write_alien_symbol (bfd *abfd, |
1070 | asymbol *symbol, | |
e7ebb214 | 1071 | struct internal_syment *isym, |
270f8245 | 1072 | union internal_auxent *iaux, |
c8e7bf0d NC |
1073 | bfd_vma *written, |
1074 | bfd_size_type *string_size_p, | |
1075 | asection **debug_string_section_p, | |
1076 | bfd_size_type *debug_string_size_p) | |
252b5132 RH |
1077 | { |
1078 | combined_entry_type *native; | |
e7ebb214 | 1079 | combined_entry_type dummy[2]; |
88e59394 DK |
1080 | asection *output_section = symbol->section->output_section |
1081 | ? symbol->section->output_section | |
1082 | : symbol->section; | |
07c7ed6d | 1083 | struct bfd_link_info *link_info = coff_data (abfd)->link_info; |
e7ebb214 | 1084 | bfd_boolean ret; |
252b5132 | 1085 | |
07c7ed6d KT |
1086 | if ((!link_info || link_info->strip_discarded) |
1087 | && !bfd_is_abs_section (symbol->section) | |
1088 | && symbol->section->output_section == bfd_abs_section_ptr) | |
1089 | { | |
1090 | symbol->name = ""; | |
e7ebb214 | 1091 | if (isym != NULL) |
07d6d2b8 | 1092 | memset (isym, 0, sizeof (*isym)); |
07c7ed6d KT |
1093 | return TRUE; |
1094 | } | |
e7ebb214 | 1095 | native = dummy; |
a5c71af8 NC |
1096 | native->is_sym = TRUE; |
1097 | native[1].is_sym = FALSE; | |
252b5132 RH |
1098 | native->u.syment.n_type = T_NULL; |
1099 | native->u.syment.n_flags = 0; | |
e7ebb214 | 1100 | native->u.syment.n_numaux = 0; |
252b5132 RH |
1101 | if (bfd_is_und_section (symbol->section)) |
1102 | { | |
1103 | native->u.syment.n_scnum = N_UNDEF; | |
1104 | native->u.syment.n_value = symbol->value; | |
1105 | } | |
1106 | else if (bfd_is_com_section (symbol->section)) | |
1107 | { | |
1108 | native->u.syment.n_scnum = N_UNDEF; | |
1109 | native->u.syment.n_value = symbol->value; | |
1110 | } | |
e7ebb214 JB |
1111 | else if (symbol->flags & BSF_FILE) |
1112 | { | |
1113 | native->u.syment.n_scnum = N_DEBUG; | |
1114 | native->u.syment.n_numaux = 1; | |
1115 | } | |
252b5132 RH |
1116 | else if (symbol->flags & BSF_DEBUGGING) |
1117 | { | |
1118 | /* There isn't much point to writing out a debugging symbol | |
07d6d2b8 AM |
1119 | unless we are prepared to convert it into COFF debugging |
1120 | format. So, we just ignore them. We must clobber the symbol | |
1121 | name to keep it from being put in the string table. */ | |
252b5132 | 1122 | symbol->name = ""; |
e7ebb214 | 1123 | if (isym != NULL) |
07d6d2b8 | 1124 | memset (isym, 0, sizeof (*isym)); |
b34976b6 | 1125 | return TRUE; |
252b5132 RH |
1126 | } |
1127 | else | |
1128 | { | |
88e59394 | 1129 | native->u.syment.n_scnum = output_section->target_index; |
252b5132 RH |
1130 | native->u.syment.n_value = (symbol->value |
1131 | + symbol->section->output_offset); | |
1132 | if (! obj_pe (abfd)) | |
88e59394 | 1133 | native->u.syment.n_value += output_section->vma; |
252b5132 | 1134 | |
08da05b0 | 1135 | /* Copy the any flags from the file header into the symbol. |
07d6d2b8 | 1136 | FIXME: Why? */ |
252b5132 | 1137 | { |
f4943d82 | 1138 | coff_symbol_type *c = coff_symbol_from (symbol); |
252b5132 RH |
1139 | if (c != (coff_symbol_type *) NULL) |
1140 | native->u.syment.n_flags = bfd_asymbol_bfd (&c->symbol)->flags; | |
1141 | } | |
1142 | } | |
1143 | ||
1144 | native->u.syment.n_type = 0; | |
e7ebb214 JB |
1145 | if (symbol->flags & BSF_FILE) |
1146 | native->u.syment.n_sclass = C_FILE; | |
1147 | else if (symbol->flags & BSF_LOCAL) | |
252b5132 RH |
1148 | native->u.syment.n_sclass = C_STAT; |
1149 | else if (symbol->flags & BSF_WEAK) | |
1150 | native->u.syment.n_sclass = obj_pe (abfd) ? C_NT_WEAK : C_WEAKEXT; | |
1151 | else | |
1152 | native->u.syment.n_sclass = C_EXT; | |
252b5132 | 1153 | |
e7ebb214 JB |
1154 | ret = coff_write_symbol (abfd, symbol, native, written, string_size_p, |
1155 | debug_string_section_p, debug_string_size_p); | |
1156 | if (isym != NULL) | |
1157 | *isym = native->u.syment; | |
270f8245 JB |
1158 | if (iaux != NULL && native->u.syment.n_numaux) |
1159 | *iaux = native[1].u.auxent; | |
e7ebb214 | 1160 | return ret; |
252b5132 RH |
1161 | } |
1162 | ||
1163 | /* Write a native symbol to a COFF file. */ | |
1164 | ||
b34976b6 | 1165 | static bfd_boolean |
c8e7bf0d NC |
1166 | coff_write_native_symbol (bfd *abfd, |
1167 | coff_symbol_type *symbol, | |
1168 | bfd_vma *written, | |
1169 | bfd_size_type *string_size_p, | |
1170 | asection **debug_string_section_p, | |
1171 | bfd_size_type *debug_string_size_p) | |
252b5132 RH |
1172 | { |
1173 | combined_entry_type *native = symbol->native; | |
1174 | alent *lineno = symbol->lineno; | |
07c7ed6d KT |
1175 | struct bfd_link_info *link_info = coff_data (abfd)->link_info; |
1176 | ||
1177 | if ((!link_info || link_info->strip_discarded) | |
1178 | && !bfd_is_abs_section (symbol->symbol.section) | |
1179 | && symbol->symbol.section->output_section == bfd_abs_section_ptr) | |
1180 | { | |
1181 | symbol->symbol.name = ""; | |
1182 | return TRUE; | |
1183 | } | |
252b5132 | 1184 | |
a5c71af8 | 1185 | BFD_ASSERT (native->is_sym); |
252b5132 RH |
1186 | /* If this symbol has an associated line number, we must store the |
1187 | symbol index in the line number field. We also tag the auxent to | |
1188 | point to the right place in the lineno table. */ | |
1189 | if (lineno && !symbol->done_lineno && symbol->symbol.section->owner != NULL) | |
1190 | { | |
1191 | unsigned int count = 0; | |
c8e7bf0d | 1192 | |
252b5132 RH |
1193 | lineno[count].u.offset = *written; |
1194 | if (native->u.syment.n_numaux) | |
1195 | { | |
1196 | union internal_auxent *a = &((native + 1)->u.auxent); | |
1197 | ||
1198 | a->x_sym.x_fcnary.x_fcn.x_lnnoptr = | |
1199 | symbol->symbol.section->output_section->moving_line_filepos; | |
1200 | } | |
1201 | ||
1202 | /* Count and relocate all other linenumbers. */ | |
1203 | count++; | |
1204 | while (lineno[count].line_number != 0) | |
1205 | { | |
252b5132 RH |
1206 | lineno[count].u.offset += |
1207 | (symbol->symbol.section->output_section->vma | |
1208 | + symbol->symbol.section->output_offset); | |
252b5132 RH |
1209 | count++; |
1210 | } | |
b34976b6 | 1211 | symbol->done_lineno = TRUE; |
252b5132 | 1212 | |
84c254c6 NC |
1213 | if (! bfd_is_const_section (symbol->symbol.section->output_section)) |
1214 | symbol->symbol.section->output_section->moving_line_filepos += | |
1215 | count * bfd_coff_linesz (abfd); | |
252b5132 RH |
1216 | } |
1217 | ||
1218 | return coff_write_symbol (abfd, &(symbol->symbol), native, written, | |
1219 | string_size_p, debug_string_section_p, | |
1220 | debug_string_size_p); | |
1221 | } | |
1222 | ||
e144674a | 1223 | static void |
52d45da3 AM |
1224 | null_error_handler (const char *fmt ATTRIBUTE_UNUSED, |
1225 | va_list ap ATTRIBUTE_UNUSED) | |
e144674a NC |
1226 | { |
1227 | } | |
1228 | ||
252b5132 RH |
1229 | /* Write out the COFF symbols. */ |
1230 | ||
b34976b6 | 1231 | bfd_boolean |
c8e7bf0d | 1232 | coff_write_symbols (bfd *abfd) |
252b5132 RH |
1233 | { |
1234 | bfd_size_type string_size; | |
1235 | asection *debug_string_section; | |
1236 | bfd_size_type debug_string_size; | |
1237 | unsigned int i; | |
1238 | unsigned int limit = bfd_get_symcount (abfd); | |
f075ee0c | 1239 | bfd_vma written = 0; |
252b5132 RH |
1240 | asymbol **p; |
1241 | ||
1242 | string_size = 0; | |
1243 | debug_string_section = NULL; | |
1244 | debug_string_size = 0; | |
1245 | ||
1246 | /* If this target supports long section names, they must be put into | |
1247 | the string table. This is supported by PE. This code must | |
1248 | handle section names just as they are handled in | |
1249 | coff_write_object_contents. */ | |
1250 | if (bfd_coff_long_section_names (abfd)) | |
1251 | { | |
1252 | asection *o; | |
1253 | ||
1254 | for (o = abfd->sections; o != NULL; o = o->next) | |
1255 | { | |
1256 | size_t len; | |
1257 | ||
1258 | len = strlen (o->name); | |
1259 | if (len > SCNNMLEN) | |
1260 | string_size += len + 1; | |
1261 | } | |
1262 | } | |
1263 | ||
c8e7bf0d | 1264 | /* Seek to the right place. */ |
252b5132 | 1265 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0) |
b34976b6 | 1266 | return FALSE; |
252b5132 | 1267 | |
c8e7bf0d | 1268 | /* Output all the symbols we have. */ |
252b5132 RH |
1269 | written = 0; |
1270 | for (p = abfd->outsymbols, i = 0; i < limit; i++, p++) | |
1271 | { | |
1272 | asymbol *symbol = *p; | |
f4943d82 | 1273 | coff_symbol_type *c_symbol = coff_symbol_from (symbol); |
252b5132 RH |
1274 | |
1275 | if (c_symbol == (coff_symbol_type *) NULL | |
1276 | || c_symbol->native == (combined_entry_type *) NULL) | |
1277 | { | |
270f8245 | 1278 | if (!coff_write_alien_symbol (abfd, symbol, NULL, NULL, &written, |
e7ebb214 | 1279 | &string_size, &debug_string_section, |
252b5132 | 1280 | &debug_string_size)) |
b34976b6 | 1281 | return FALSE; |
252b5132 RH |
1282 | } |
1283 | else | |
1284 | { | |
e144674a NC |
1285 | if (coff_backend_info (abfd)->_bfd_coff_classify_symbol != NULL) |
1286 | { | |
1287 | bfd_error_handler_type current_error_handler; | |
96d56e9f | 1288 | enum coff_symbol_classification sym_class; |
e144674a NC |
1289 | unsigned char *n_sclass; |
1290 | ||
1291 | /* Suppress error reporting by bfd_coff_classify_symbol. | |
1292 | Error messages can be generated when we are processing a local | |
1293 | symbol which has no associated section and we do not have to | |
1294 | worry about this, all we need to know is that it is local. */ | |
1295 | current_error_handler = bfd_set_error_handler (null_error_handler); | |
a5c71af8 | 1296 | BFD_ASSERT (c_symbol->native->is_sym); |
96d56e9f | 1297 | sym_class = bfd_coff_classify_symbol (abfd, |
a5c71af8 | 1298 | &c_symbol->native->u.syment); |
e144674a | 1299 | (void) bfd_set_error_handler (current_error_handler); |
96d56e9f | 1300 | |
e144674a NC |
1301 | n_sclass = &c_symbol->native->u.syment.n_sclass; |
1302 | ||
1303 | /* If the symbol class has been changed (eg objcopy/ld script/etc) | |
1304 | we cannot retain the existing sclass from the original symbol. | |
1305 | Weak symbols only have one valid sclass, so just set it always. | |
1306 | If it is not local class and should be, set it C_STAT. | |
1307 | If it is global and not classified as global, or if it is | |
1308 | weak (which is also classified as global), set it C_EXT. */ | |
1309 | ||
1310 | if (symbol->flags & BSF_WEAK) | |
1311 | *n_sclass = obj_pe (abfd) ? C_NT_WEAK : C_WEAKEXT; | |
96d56e9f | 1312 | else if (symbol->flags & BSF_LOCAL && sym_class != COFF_SYMBOL_LOCAL) |
e144674a NC |
1313 | *n_sclass = C_STAT; |
1314 | else if (symbol->flags & BSF_GLOBAL | |
96d56e9f | 1315 | && (sym_class != COFF_SYMBOL_GLOBAL |
e144674a NC |
1316 | #ifdef COFF_WITH_PE |
1317 | || *n_sclass == C_NT_WEAK | |
1318 | #endif | |
1319 | || *n_sclass == C_WEAKEXT)) | |
1320 | c_symbol->native->u.syment.n_sclass = C_EXT; | |
1321 | } | |
1322 | ||
252b5132 RH |
1323 | if (!coff_write_native_symbol (abfd, c_symbol, &written, |
1324 | &string_size, &debug_string_section, | |
1325 | &debug_string_size)) | |
b34976b6 | 1326 | return FALSE; |
252b5132 RH |
1327 | } |
1328 | } | |
1329 | ||
1330 | obj_raw_syment_count (abfd) = written; | |
1331 | ||
c8e7bf0d | 1332 | /* Now write out strings. */ |
252b5132 RH |
1333 | if (string_size != 0) |
1334 | { | |
1335 | unsigned int size = string_size + STRING_SIZE_SIZE; | |
1336 | bfd_byte buffer[STRING_SIZE_SIZE]; | |
1337 | ||
1338 | #if STRING_SIZE_SIZE == 4 | |
dc810e39 | 1339 | H_PUT_32 (abfd, size, buffer); |
252b5132 | 1340 | #else |
dc810e39 | 1341 | #error Change H_PUT_32 |
252b5132 | 1342 | #endif |
c8e7bf0d | 1343 | if (bfd_bwrite ((void *) buffer, (bfd_size_type) sizeof (buffer), abfd) |
dc810e39 | 1344 | != sizeof (buffer)) |
b34976b6 | 1345 | return FALSE; |
252b5132 RH |
1346 | |
1347 | /* Handle long section names. This code must handle section | |
1348 | names just as they are handled in coff_write_object_contents. */ | |
1349 | if (bfd_coff_long_section_names (abfd)) | |
1350 | { | |
1351 | asection *o; | |
1352 | ||
1353 | for (o = abfd->sections; o != NULL; o = o->next) | |
1354 | { | |
1355 | size_t len; | |
1356 | ||
1357 | len = strlen (o->name); | |
1358 | if (len > SCNNMLEN) | |
1359 | { | |
dc810e39 AM |
1360 | if (bfd_bwrite (o->name, (bfd_size_type) (len + 1), abfd) |
1361 | != len + 1) | |
b34976b6 | 1362 | return FALSE; |
252b5132 RH |
1363 | } |
1364 | } | |
1365 | } | |
1366 | ||
1367 | for (p = abfd->outsymbols, i = 0; | |
1368 | i < limit; | |
1369 | i++, p++) | |
1370 | { | |
1371 | asymbol *q = *p; | |
1372 | size_t name_length = strlen (q->name); | |
f4943d82 | 1373 | coff_symbol_type *c_symbol = coff_symbol_from (q); |
252b5132 RH |
1374 | size_t maxlen; |
1375 | ||
1376 | /* Figure out whether the symbol name should go in the string | |
1377 | table. Symbol names that are short enough are stored | |
1378 | directly in the syment structure. File names permit a | |
1379 | different, longer, length in the syment structure. On | |
1380 | XCOFF, some symbol names are stored in the .debug section | |
1381 | rather than in the string table. */ | |
1382 | ||
1383 | if (c_symbol == NULL | |
1384 | || c_symbol->native == NULL) | |
c8e7bf0d NC |
1385 | /* This is not a COFF symbol, so it certainly is not a |
1386 | file name, nor does it go in the .debug section. */ | |
1387 | maxlen = bfd_coff_force_symnames_in_strings (abfd) ? 0 : SYMNMLEN; | |
1388 | ||
a5c71af8 NC |
1389 | else if (! c_symbol->native->is_sym) |
1390 | maxlen = bfd_coff_force_symnames_in_strings (abfd) ? 0 : SYMNMLEN; | |
1b786873 | 1391 | |
252b5132 RH |
1392 | else if (bfd_coff_symname_in_debug (abfd, |
1393 | &c_symbol->native->u.syment)) | |
c8e7bf0d NC |
1394 | /* This symbol name is in the XCOFF .debug section. |
1395 | Don't write it into the string table. */ | |
1396 | maxlen = name_length; | |
1397 | ||
252b5132 RH |
1398 | else if (c_symbol->native->u.syment.n_sclass == C_FILE |
1399 | && c_symbol->native->u.syment.n_numaux > 0) | |
7f6d05e8 | 1400 | { |
244148ad | 1401 | if (bfd_coff_force_symnames_in_strings (abfd)) |
dc810e39 AM |
1402 | { |
1403 | if (bfd_bwrite (".file", (bfd_size_type) 6, abfd) != 6) | |
b34976b6 | 1404 | return FALSE; |
dc810e39 | 1405 | } |
7f6d05e8 CP |
1406 | maxlen = bfd_coff_filnmlen (abfd); |
1407 | } | |
252b5132 | 1408 | else |
7f6d05e8 | 1409 | maxlen = bfd_coff_force_symnames_in_strings (abfd) ? 0 : SYMNMLEN; |
252b5132 RH |
1410 | |
1411 | if (name_length > maxlen) | |
1412 | { | |
c8e7bf0d | 1413 | if (bfd_bwrite ((void *) (q->name), (bfd_size_type) name_length + 1, |
dc810e39 | 1414 | abfd) != name_length + 1) |
b34976b6 | 1415 | return FALSE; |
252b5132 RH |
1416 | } |
1417 | } | |
1418 | } | |
1419 | else | |
1420 | { | |
1421 | /* We would normally not write anything here, but we'll write | |
07d6d2b8 AM |
1422 | out 4 so that any stupid coff reader which tries to read the |
1423 | string table even when there isn't one won't croak. */ | |
252b5132 RH |
1424 | unsigned int size = STRING_SIZE_SIZE; |
1425 | bfd_byte buffer[STRING_SIZE_SIZE]; | |
1426 | ||
1427 | #if STRING_SIZE_SIZE == 4 | |
dc810e39 | 1428 | H_PUT_32 (abfd, size, buffer); |
252b5132 | 1429 | #else |
dc810e39 | 1430 | #error Change H_PUT_32 |
252b5132 | 1431 | #endif |
c8e7bf0d | 1432 | if (bfd_bwrite ((void *) buffer, (bfd_size_type) STRING_SIZE_SIZE, abfd) |
252b5132 | 1433 | != STRING_SIZE_SIZE) |
b34976b6 | 1434 | return FALSE; |
252b5132 RH |
1435 | } |
1436 | ||
1437 | /* Make sure the .debug section was created to be the correct size. | |
1438 | We should create it ourselves on the fly, but we don't because | |
1439 | BFD won't let us write to any section until we know how large all | |
1440 | the sections are. We could still do it by making another pass | |
1441 | over the symbols. FIXME. */ | |
1442 | BFD_ASSERT (debug_string_size == 0 | |
1443 | || (debug_string_section != (asection *) NULL | |
1444 | && (BFD_ALIGN (debug_string_size, | |
1445 | 1 << debug_string_section->alignment_power) | |
eea6121a | 1446 | == debug_string_section->size))); |
252b5132 | 1447 | |
b34976b6 | 1448 | return TRUE; |
252b5132 RH |
1449 | } |
1450 | ||
b34976b6 | 1451 | bfd_boolean |
c8e7bf0d | 1452 | coff_write_linenumbers (bfd *abfd) |
252b5132 RH |
1453 | { |
1454 | asection *s; | |
1455 | bfd_size_type linesz; | |
c8e7bf0d | 1456 | void * buff; |
252b5132 RH |
1457 | |
1458 | linesz = bfd_coff_linesz (abfd); | |
1459 | buff = bfd_alloc (abfd, linesz); | |
1460 | if (!buff) | |
b34976b6 | 1461 | return FALSE; |
252b5132 RH |
1462 | for (s = abfd->sections; s != (asection *) NULL; s = s->next) |
1463 | { | |
1464 | if (s->lineno_count) | |
1465 | { | |
1466 | asymbol **q = abfd->outsymbols; | |
1467 | if (bfd_seek (abfd, s->line_filepos, SEEK_SET) != 0) | |
b34976b6 | 1468 | return FALSE; |
c8e7bf0d | 1469 | /* Find all the linenumbers in this section. */ |
252b5132 RH |
1470 | while (*q) |
1471 | { | |
1472 | asymbol *p = *q; | |
1473 | if (p->section->output_section == s) | |
1474 | { | |
1475 | alent *l = | |
1476 | BFD_SEND (bfd_asymbol_bfd (p), _get_lineno, | |
1477 | (bfd_asymbol_bfd (p), p)); | |
1478 | if (l) | |
1479 | { | |
c8e7bf0d | 1480 | /* Found a linenumber entry, output. */ |
252b5132 | 1481 | struct internal_lineno out; |
a5c71af8 | 1482 | |
c8e7bf0d | 1483 | memset ((void *) & out, 0, sizeof (out)); |
252b5132 RH |
1484 | out.l_lnno = 0; |
1485 | out.l_addr.l_symndx = l->u.offset; | |
1486 | bfd_coff_swap_lineno_out (abfd, &out, buff); | |
dc810e39 AM |
1487 | if (bfd_bwrite (buff, (bfd_size_type) linesz, abfd) |
1488 | != linesz) | |
b34976b6 | 1489 | return FALSE; |
252b5132 RH |
1490 | l++; |
1491 | while (l->line_number) | |
1492 | { | |
1493 | out.l_lnno = l->line_number; | |
1494 | out.l_addr.l_symndx = l->u.offset; | |
1495 | bfd_coff_swap_lineno_out (abfd, &out, buff); | |
dc810e39 AM |
1496 | if (bfd_bwrite (buff, (bfd_size_type) linesz, abfd) |
1497 | != linesz) | |
b34976b6 | 1498 | return FALSE; |
252b5132 RH |
1499 | l++; |
1500 | } | |
1501 | } | |
1502 | } | |
1503 | q++; | |
1504 | } | |
1505 | } | |
1506 | } | |
1507 | bfd_release (abfd, buff); | |
b34976b6 | 1508 | return TRUE; |
252b5132 RH |
1509 | } |
1510 | ||
252b5132 | 1511 | alent * |
c8e7bf0d | 1512 | coff_get_lineno (bfd *ignore_abfd ATTRIBUTE_UNUSED, asymbol *symbol) |
252b5132 RH |
1513 | { |
1514 | return coffsymbol (symbol)->lineno; | |
1515 | } | |
1516 | ||
252b5132 RH |
1517 | /* This function transforms the offsets into the symbol table into |
1518 | pointers to syments. */ | |
1519 | ||
1520 | static void | |
c8e7bf0d NC |
1521 | coff_pointerize_aux (bfd *abfd, |
1522 | combined_entry_type *table_base, | |
1523 | combined_entry_type *symbol, | |
1524 | unsigned int indaux, | |
334d4ced NC |
1525 | combined_entry_type *auxent, |
1526 | combined_entry_type *table_end) | |
252b5132 RH |
1527 | { |
1528 | unsigned int type = symbol->u.syment.n_type; | |
96d56e9f | 1529 | unsigned int n_sclass = symbol->u.syment.n_sclass; |
252b5132 | 1530 | |
a5c71af8 | 1531 | BFD_ASSERT (symbol->is_sym); |
252b5132 RH |
1532 | if (coff_backend_info (abfd)->_bfd_coff_pointerize_aux_hook) |
1533 | { | |
1534 | if ((*coff_backend_info (abfd)->_bfd_coff_pointerize_aux_hook) | |
1535 | (abfd, table_base, symbol, indaux, auxent)) | |
1536 | return; | |
1537 | } | |
1538 | ||
c8e7bf0d | 1539 | /* Don't bother if this is a file or a section. */ |
96d56e9f | 1540 | if (n_sclass == C_STAT && type == T_NULL) |
252b5132 | 1541 | return; |
96d56e9f | 1542 | if (n_sclass == C_FILE) |
252b5132 RH |
1543 | return; |
1544 | ||
a5c71af8 | 1545 | BFD_ASSERT (! auxent->is_sym); |
c8e7bf0d NC |
1546 | /* Otherwise patch up. */ |
1547 | #define N_TMASK coff_data (abfd)->local_n_tmask | |
252b5132 | 1548 | #define N_BTSHFT coff_data (abfd)->local_n_btshft |
68ffbac6 | 1549 | |
96d56e9f NC |
1550 | if ((ISFCN (type) || ISTAG (n_sclass) || n_sclass == C_BLOCK |
1551 | || n_sclass == C_FCN) | |
e9af4700 NC |
1552 | && auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l > 0 |
1553 | && auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l | |
334d4ced NC |
1554 | < (long) obj_raw_syment_count (abfd) |
1555 | && table_base + auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l | |
1556 | < table_end) | |
252b5132 RH |
1557 | { |
1558 | auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p = | |
1559 | table_base + auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l; | |
1560 | auxent->fix_end = 1; | |
1561 | } | |
334d4ced | 1562 | |
252b5132 RH |
1563 | /* A negative tagndx is meaningless, but the SCO 3.2v4 cc can |
1564 | generate one, so we must be careful to ignore it. */ | |
eb77f6a4 | 1565 | if ((unsigned long) auxent->u.auxent.x_sym.x_tagndx.l |
334d4ced NC |
1566 | < obj_raw_syment_count (abfd) |
1567 | && table_base + auxent->u.auxent.x_sym.x_tagndx.l < table_end) | |
252b5132 RH |
1568 | { |
1569 | auxent->u.auxent.x_sym.x_tagndx.p = | |
1570 | table_base + auxent->u.auxent.x_sym.x_tagndx.l; | |
1571 | auxent->fix_tag = 1; | |
1572 | } | |
1573 | } | |
1574 | ||
1575 | /* Allocate space for the ".debug" section, and read it. | |
1576 | We did not read the debug section until now, because | |
244148ad | 1577 | we didn't want to go to the trouble until someone needed it. */ |
252b5132 RH |
1578 | |
1579 | static char * | |
5a3f568b | 1580 | build_debug_section (bfd *abfd, asection ** sect_return) |
252b5132 RH |
1581 | { |
1582 | char *debug_section; | |
dc810e39 AM |
1583 | file_ptr position; |
1584 | bfd_size_type sec_size; | |
252b5132 RH |
1585 | |
1586 | asection *sect = bfd_get_section_by_name (abfd, ".debug"); | |
1587 | ||
1588 | if (!sect) | |
1589 | { | |
1590 | bfd_set_error (bfd_error_no_debug_section); | |
1591 | return NULL; | |
1592 | } | |
1593 | ||
eea6121a | 1594 | sec_size = sect->size; |
a50b1753 | 1595 | debug_section = (char *) bfd_alloc (abfd, sec_size); |
252b5132 RH |
1596 | if (debug_section == NULL) |
1597 | return NULL; | |
1598 | ||
244148ad | 1599 | /* Seek to the beginning of the `.debug' section and read it. |
252b5132 RH |
1600 | Save the current position first; it is needed by our caller. |
1601 | Then read debug section and reset the file pointer. */ | |
1602 | ||
1603 | position = bfd_tell (abfd); | |
1604 | if (bfd_seek (abfd, sect->filepos, SEEK_SET) != 0 | |
dc810e39 | 1605 | || bfd_bread (debug_section, sec_size, abfd) != sec_size |
252b5132 RH |
1606 | || bfd_seek (abfd, position, SEEK_SET) != 0) |
1607 | return NULL; | |
5a3f568b NC |
1608 | |
1609 | * sect_return = sect; | |
252b5132 RH |
1610 | return debug_section; |
1611 | } | |
1612 | ||
252b5132 RH |
1613 | /* Return a pointer to a malloc'd copy of 'name'. 'name' may not be |
1614 | \0-terminated, but will not exceed 'maxlen' characters. The copy *will* | |
1615 | be \0-terminated. */ | |
c8e7bf0d | 1616 | |
252b5132 | 1617 | static char * |
c8e7bf0d | 1618 | copy_name (bfd *abfd, char *name, size_t maxlen) |
252b5132 | 1619 | { |
dc810e39 | 1620 | size_t len; |
252b5132 RH |
1621 | char *newname; |
1622 | ||
1623 | for (len = 0; len < maxlen; ++len) | |
c8e7bf0d NC |
1624 | if (name[len] == '\0') |
1625 | break; | |
1626 | ||
a50b1753 | 1627 | if ((newname = (char *) bfd_alloc (abfd, (bfd_size_type) len + 1)) == NULL) |
c8e7bf0d | 1628 | return NULL; |
252b5132 | 1629 | |
252b5132 RH |
1630 | strncpy (newname, name, len); |
1631 | newname[len] = '\0'; | |
1632 | return newname; | |
1633 | } | |
1634 | ||
1635 | /* Read in the external symbols. */ | |
1636 | ||
b34976b6 | 1637 | bfd_boolean |
c8e7bf0d | 1638 | _bfd_coff_get_external_symbols (bfd *abfd) |
252b5132 RH |
1639 | { |
1640 | bfd_size_type symesz; | |
dc810e39 | 1641 | bfd_size_type size; |
c8e7bf0d | 1642 | void * syms; |
252b5132 RH |
1643 | |
1644 | if (obj_coff_external_syms (abfd) != NULL) | |
b34976b6 | 1645 | return TRUE; |
252b5132 RH |
1646 | |
1647 | symesz = bfd_coff_symesz (abfd); | |
1648 | ||
1649 | size = obj_raw_syment_count (abfd) * symesz; | |
353c5574 MS |
1650 | if (size == 0) |
1651 | return TRUE; | |
6cee8979 NC |
1652 | /* Check for integer overflow and for unreasonable symbol counts. */ |
1653 | if (size < obj_raw_syment_count (abfd) | |
1654 | || (bfd_get_file_size (abfd) > 0 | |
1655 | && size > bfd_get_file_size (abfd))) | |
07d6d2b8 | 1656 | |
6cee8979 | 1657 | { |
2dcf00ce AM |
1658 | _bfd_error_handler (_("%pB: corrupt symbol count: %#" PRIx64 ""), |
1659 | abfd, (uint64_t) obj_raw_syment_count (abfd)); | |
6cee8979 NC |
1660 | return FALSE; |
1661 | } | |
252b5132 | 1662 | |
c8e7bf0d | 1663 | syms = bfd_malloc (size); |
353c5574 | 1664 | if (syms == NULL) |
98f02962 NC |
1665 | { |
1666 | /* PR 21013: Provide an error message when the alloc fails. */ | |
2dcf00ce AM |
1667 | _bfd_error_handler (_("%pB: not enough memory to allocate space " |
1668 | "for %#" PRIx64 " symbols of size %#" PRIx64), | |
1669 | abfd, (uint64_t) obj_raw_syment_count (abfd), | |
1670 | (uint64_t) symesz); | |
98f02962 NC |
1671 | return FALSE; |
1672 | } | |
252b5132 RH |
1673 | |
1674 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0 | |
dc810e39 | 1675 | || bfd_bread (syms, size, abfd) != size) |
252b5132 RH |
1676 | { |
1677 | if (syms != NULL) | |
1678 | free (syms); | |
b34976b6 | 1679 | return FALSE; |
252b5132 RH |
1680 | } |
1681 | ||
1682 | obj_coff_external_syms (abfd) = syms; | |
b34976b6 | 1683 | return TRUE; |
252b5132 RH |
1684 | } |
1685 | ||
1686 | /* Read in the external strings. The strings are not loaded until | |
1687 | they are needed. This is because we have no simple way of | |
5a3f568b NC |
1688 | detecting a missing string table in an archive. If the strings |
1689 | are loaded then the STRINGS and STRINGS_LEN fields in the | |
1690 | coff_tdata structure will be set. */ | |
252b5132 RH |
1691 | |
1692 | const char * | |
c8e7bf0d | 1693 | _bfd_coff_read_string_table (bfd *abfd) |
252b5132 RH |
1694 | { |
1695 | char extstrsize[STRING_SIZE_SIZE]; | |
dc810e39 | 1696 | bfd_size_type strsize; |
252b5132 | 1697 | char *strings; |
dc810e39 | 1698 | file_ptr pos; |
252b5132 RH |
1699 | |
1700 | if (obj_coff_strings (abfd) != NULL) | |
1701 | return obj_coff_strings (abfd); | |
1702 | ||
1703 | if (obj_sym_filepos (abfd) == 0) | |
1704 | { | |
1705 | bfd_set_error (bfd_error_no_symbols); | |
1706 | return NULL; | |
1707 | } | |
1708 | ||
dc810e39 AM |
1709 | pos = obj_sym_filepos (abfd); |
1710 | pos += obj_raw_syment_count (abfd) * bfd_coff_symesz (abfd); | |
1711 | if (bfd_seek (abfd, pos, SEEK_SET) != 0) | |
252b5132 | 1712 | return NULL; |
244148ad | 1713 | |
dc810e39 AM |
1714 | if (bfd_bread (extstrsize, (bfd_size_type) sizeof extstrsize, abfd) |
1715 | != sizeof extstrsize) | |
252b5132 RH |
1716 | { |
1717 | if (bfd_get_error () != bfd_error_file_truncated) | |
1718 | return NULL; | |
1719 | ||
1720 | /* There is no string table. */ | |
1721 | strsize = STRING_SIZE_SIZE; | |
1722 | } | |
1723 | else | |
1724 | { | |
1725 | #if STRING_SIZE_SIZE == 4 | |
dc810e39 | 1726 | strsize = H_GET_32 (abfd, extstrsize); |
252b5132 | 1727 | #else |
dc810e39 | 1728 | #error Change H_GET_32 |
252b5132 RH |
1729 | #endif |
1730 | } | |
1731 | ||
b0029dce | 1732 | if (strsize < STRING_SIZE_SIZE || strsize > bfd_get_file_size (abfd)) |
252b5132 | 1733 | { |
4eca0228 | 1734 | _bfd_error_handler |
695344c0 | 1735 | /* xgettext: c-format */ |
2dcf00ce | 1736 | (_("%pB: bad string table size %" PRIu64), abfd, (uint64_t) strsize); |
252b5132 RH |
1737 | bfd_set_error (bfd_error_bad_value); |
1738 | return NULL; | |
1739 | } | |
07d6d2b8 | 1740 | |
36e9d67b | 1741 | strings = (char *) bfd_malloc (strsize + 1); |
cd11f78f AC |
1742 | if (strings == NULL) |
1743 | return NULL; | |
1744 | ||
36e9d67b NC |
1745 | /* PR 17521 file: 079-54929-0.004. |
1746 | A corrupt file could contain an index that points into the first | |
1747 | STRING_SIZE_SIZE bytes of the string table, so make sure that | |
1748 | they are zero. */ | |
1749 | memset (strings, 0, STRING_SIZE_SIZE); | |
1750 | ||
dc810e39 | 1751 | if (bfd_bread (strings + STRING_SIZE_SIZE, strsize - STRING_SIZE_SIZE, abfd) |
252b5132 RH |
1752 | != strsize - STRING_SIZE_SIZE) |
1753 | { | |
1754 | free (strings); | |
1755 | return NULL; | |
1756 | } | |
1757 | ||
1758 | obj_coff_strings (abfd) = strings; | |
5a3f568b | 1759 | obj_coff_strings_len (abfd) = strsize; |
36e9d67b NC |
1760 | /* Terminate the string table, just in case. */ |
1761 | strings[strsize] = 0; | |
252b5132 RH |
1762 | return strings; |
1763 | } | |
1764 | ||
1765 | /* Free up the external symbols and strings read from a COFF file. */ | |
1766 | ||
b34976b6 | 1767 | bfd_boolean |
c8e7bf0d | 1768 | _bfd_coff_free_symbols (bfd *abfd) |
252b5132 | 1769 | { |
ee357486 NC |
1770 | if (! bfd_family_coff (abfd)) |
1771 | return FALSE; | |
1772 | ||
252b5132 RH |
1773 | if (obj_coff_external_syms (abfd) != NULL |
1774 | && ! obj_coff_keep_syms (abfd)) | |
1775 | { | |
1776 | free (obj_coff_external_syms (abfd)); | |
1777 | obj_coff_external_syms (abfd) = NULL; | |
1778 | } | |
ee357486 | 1779 | |
252b5132 RH |
1780 | if (obj_coff_strings (abfd) != NULL |
1781 | && ! obj_coff_keep_strings (abfd)) | |
1782 | { | |
1783 | free (obj_coff_strings (abfd)); | |
1784 | obj_coff_strings (abfd) = NULL; | |
5a3f568b | 1785 | obj_coff_strings_len (abfd) = 0; |
252b5132 | 1786 | } |
ee357486 | 1787 | |
b34976b6 | 1788 | return TRUE; |
252b5132 RH |
1789 | } |
1790 | ||
1791 | /* Read a symbol table into freshly bfd_allocated memory, swap it, and | |
1792 | knit the symbol names into a normalized form. By normalized here I | |
1793 | mean that all symbols have an n_offset pointer that points to a null- | |
1794 | terminated string. */ | |
1795 | ||
1796 | combined_entry_type * | |
c8e7bf0d | 1797 | coff_get_normalized_symtab (bfd *abfd) |
252b5132 RH |
1798 | { |
1799 | combined_entry_type *internal; | |
1800 | combined_entry_type *internal_ptr; | |
1801 | combined_entry_type *symbol_ptr; | |
1802 | combined_entry_type *internal_end; | |
dc810e39 | 1803 | size_t symesz; |
252b5132 RH |
1804 | char *raw_src; |
1805 | char *raw_end; | |
1806 | const char *string_table = NULL; | |
5a3f568b NC |
1807 | asection * debug_sec = NULL; |
1808 | char *debug_sec_data = NULL; | |
dc810e39 | 1809 | bfd_size_type size; |
252b5132 RH |
1810 | |
1811 | if (obj_raw_syments (abfd) != NULL) | |
1812 | return obj_raw_syments (abfd); | |
1813 | ||
201159ec NC |
1814 | if (! _bfd_coff_get_external_symbols (abfd)) |
1815 | return NULL; | |
1816 | ||
f14080d4 | 1817 | size = obj_raw_syment_count (abfd); |
6cee8979 | 1818 | /* Check for integer overflow. */ |
f14080d4 | 1819 | if (size > (bfd_size_type) -1 / sizeof (combined_entry_type)) |
6cee8979 | 1820 | return NULL; |
f14080d4 | 1821 | size *= sizeof (combined_entry_type); |
a50b1753 | 1822 | internal = (combined_entry_type *) bfd_zalloc (abfd, size); |
252b5132 RH |
1823 | if (internal == NULL && size != 0) |
1824 | return NULL; | |
1825 | internal_end = internal + obj_raw_syment_count (abfd); | |
1b786873 | 1826 | |
252b5132 RH |
1827 | raw_src = (char *) obj_coff_external_syms (abfd); |
1828 | ||
c8e7bf0d | 1829 | /* Mark the end of the symbols. */ |
252b5132 RH |
1830 | symesz = bfd_coff_symesz (abfd); |
1831 | raw_end = (char *) raw_src + obj_raw_syment_count (abfd) * symesz; | |
1832 | ||
1833 | /* FIXME SOMEDAY. A string table size of zero is very weird, but | |
1834 | probably possible. If one shows up, it will probably kill us. */ | |
1835 | ||
c8e7bf0d | 1836 | /* Swap all the raw entries. */ |
252b5132 RH |
1837 | for (internal_ptr = internal; |
1838 | raw_src < raw_end; | |
1839 | raw_src += symesz, internal_ptr++) | |
1840 | { | |
252b5132 | 1841 | unsigned int i; |
7e760b06 | 1842 | |
c8e7bf0d NC |
1843 | bfd_coff_swap_sym_in (abfd, (void *) raw_src, |
1844 | (void *) & internal_ptr->u.syment); | |
252b5132 | 1845 | symbol_ptr = internal_ptr; |
a5c71af8 | 1846 | internal_ptr->is_sym = TRUE; |
252b5132 RH |
1847 | |
1848 | for (i = 0; | |
1849 | i < symbol_ptr->u.syment.n_numaux; | |
1850 | i++) | |
1851 | { | |
1852 | internal_ptr++; | |
f14080d4 AM |
1853 | raw_src += symesz; |
1854 | ||
7e760b06 | 1855 | /* PR 17512: Prevent buffer overrun. */ |
f14080d4 | 1856 | if (raw_src >= raw_end || internal_ptr >= internal_end) |
0a9d414a NC |
1857 | { |
1858 | bfd_release (abfd, internal); | |
1859 | return NULL; | |
1860 | } | |
7e760b06 | 1861 | |
c8e7bf0d | 1862 | bfd_coff_swap_aux_in (abfd, (void *) raw_src, |
252b5132 RH |
1863 | symbol_ptr->u.syment.n_type, |
1864 | symbol_ptr->u.syment.n_sclass, | |
dc810e39 | 1865 | (int) i, symbol_ptr->u.syment.n_numaux, |
252b5132 | 1866 | &(internal_ptr->u.auxent)); |
0a9d414a | 1867 | |
a5c71af8 | 1868 | internal_ptr->is_sym = FALSE; |
252b5132 | 1869 | coff_pointerize_aux (abfd, internal, symbol_ptr, i, |
334d4ced | 1870 | internal_ptr, internal_end); |
252b5132 RH |
1871 | } |
1872 | } | |
1873 | ||
1874 | /* Free the raw symbols, but not the strings (if we have them). */ | |
b34976b6 | 1875 | obj_coff_keep_strings (abfd) = TRUE; |
252b5132 RH |
1876 | if (! _bfd_coff_free_symbols (abfd)) |
1877 | return NULL; | |
1878 | ||
1879 | for (internal_ptr = internal; internal_ptr < internal_end; | |
1880 | internal_ptr++) | |
1881 | { | |
a5c71af8 NC |
1882 | BFD_ASSERT (internal_ptr->is_sym); |
1883 | ||
252b5132 RH |
1884 | if (internal_ptr->u.syment.n_sclass == C_FILE |
1885 | && internal_ptr->u.syment.n_numaux > 0) | |
1886 | { | |
a5c71af8 NC |
1887 | combined_entry_type * aux = internal_ptr + 1; |
1888 | ||
c8e7bf0d NC |
1889 | /* Make a file symbol point to the name in the auxent, since |
1890 | the text ".file" is redundant. */ | |
a5c71af8 NC |
1891 | BFD_ASSERT (! aux->is_sym); |
1892 | ||
1893 | if (aux->u.auxent.x_file.x_n.x_zeroes == 0) | |
252b5132 | 1894 | { |
c8e7bf0d | 1895 | /* The filename is a long one, point into the string table. */ |
252b5132 RH |
1896 | if (string_table == NULL) |
1897 | { | |
1898 | string_table = _bfd_coff_read_string_table (abfd); | |
1899 | if (string_table == NULL) | |
1900 | return NULL; | |
1901 | } | |
a5c71af8 NC |
1902 | |
1903 | if ((bfd_size_type)(aux->u.auxent.x_file.x_n.x_offset) | |
5a3f568b NC |
1904 | >= obj_coff_strings_len (abfd)) |
1905 | internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) _("<corrupt>"); | |
1906 | else | |
1907 | internal_ptr->u.syment._n._n_n._n_offset = | |
a5c71af8 | 1908 | (bfd_hostptr_t) (string_table + (aux->u.auxent.x_file.x_n.x_offset)); |
252b5132 RH |
1909 | } |
1910 | else | |
1911 | { | |
7bb9db4d | 1912 | /* Ordinary short filename, put into memory anyway. The |
07d6d2b8 AM |
1913 | Microsoft PE tools sometimes store a filename in |
1914 | multiple AUX entries. */ | |
ec0ef80e DD |
1915 | if (internal_ptr->u.syment.n_numaux > 1 |
1916 | && coff_data (abfd)->pe) | |
c8e7bf0d | 1917 | internal_ptr->u.syment._n._n_n._n_offset = |
a5c71af8 NC |
1918 | (bfd_hostptr_t) |
1919 | copy_name (abfd, | |
1920 | aux->u.auxent.x_file.x_fname, | |
1921 | internal_ptr->u.syment.n_numaux * symesz); | |
ec0ef80e | 1922 | else |
c8e7bf0d | 1923 | internal_ptr->u.syment._n._n_n._n_offset = |
d2df793a | 1924 | ((bfd_hostptr_t) |
c8e7bf0d | 1925 | copy_name (abfd, |
a5c71af8 | 1926 | aux->u.auxent.x_file.x_fname, |
c8e7bf0d | 1927 | (size_t) bfd_coff_filnmlen (abfd))); |
252b5132 RH |
1928 | } |
1929 | } | |
1930 | else | |
1931 | { | |
1932 | if (internal_ptr->u.syment._n._n_n._n_zeroes != 0) | |
1933 | { | |
1934 | /* This is a "short" name. Make it long. */ | |
dc810e39 AM |
1935 | size_t i; |
1936 | char *newstring; | |
252b5132 | 1937 | |
c8e7bf0d | 1938 | /* Find the length of this string without walking into memory |
07d6d2b8 | 1939 | that isn't ours. */ |
252b5132 | 1940 | for (i = 0; i < 8; ++i) |
dc810e39 AM |
1941 | if (internal_ptr->u.syment._n._n_name[i] == '\0') |
1942 | break; | |
252b5132 | 1943 | |
a50b1753 | 1944 | newstring = (char *) bfd_zalloc (abfd, (bfd_size_type) (i + 1)); |
dc810e39 | 1945 | if (newstring == NULL) |
c8e7bf0d | 1946 | return NULL; |
dc810e39 | 1947 | strncpy (newstring, internal_ptr->u.syment._n._n_name, i); |
d2df793a | 1948 | internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) newstring; |
252b5132 RH |
1949 | internal_ptr->u.syment._n._n_n._n_zeroes = 0; |
1950 | } | |
1951 | else if (internal_ptr->u.syment._n._n_n._n_offset == 0) | |
649aeae3 | 1952 | internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) ""; |
252b5132 RH |
1953 | else if (!bfd_coff_symname_in_debug (abfd, &internal_ptr->u.syment)) |
1954 | { | |
1955 | /* Long name already. Point symbol at the string in the | |
07d6d2b8 | 1956 | table. */ |
252b5132 RH |
1957 | if (string_table == NULL) |
1958 | { | |
1959 | string_table = _bfd_coff_read_string_table (abfd); | |
1960 | if (string_table == NULL) | |
1961 | return NULL; | |
1962 | } | |
36e9d67b NC |
1963 | if (internal_ptr->u.syment._n._n_n._n_offset >= obj_coff_strings_len (abfd) |
1964 | || string_table + internal_ptr->u.syment._n._n_n._n_offset < string_table) | |
5a3f568b NC |
1965 | internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) _("<corrupt>"); |
1966 | else | |
1967 | internal_ptr->u.syment._n._n_n._n_offset = | |
1968 | ((bfd_hostptr_t) | |
1969 | (string_table | |
1970 | + internal_ptr->u.syment._n._n_n._n_offset)); | |
252b5132 RH |
1971 | } |
1972 | else | |
1973 | { | |
1974 | /* Long name in debug section. Very similar. */ | |
5a3f568b NC |
1975 | if (debug_sec_data == NULL) |
1976 | debug_sec_data = build_debug_section (abfd, & debug_sec); | |
1977 | if (debug_sec_data != NULL) | |
1978 | { | |
1979 | BFD_ASSERT (debug_sec != NULL); | |
1980 | /* PR binutils/17512: Catch out of range offsets into the debug data. */ | |
36e9d67b NC |
1981 | if (internal_ptr->u.syment._n._n_n._n_offset > debug_sec->size |
1982 | || debug_sec_data + internal_ptr->u.syment._n._n_n._n_offset < debug_sec_data) | |
5a3f568b NC |
1983 | internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) _("<corrupt>"); |
1984 | else | |
1985 | internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) | |
1986 | (debug_sec_data + internal_ptr->u.syment._n._n_n._n_offset); | |
1987 | } | |
1988 | else | |
1989 | internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) ""; | |
252b5132 RH |
1990 | } |
1991 | } | |
1992 | internal_ptr += internal_ptr->u.syment.n_numaux; | |
1993 | } | |
1994 | ||
1995 | obj_raw_syments (abfd) = internal; | |
1996 | BFD_ASSERT (obj_raw_syment_count (abfd) | |
1997 | == (unsigned int) (internal_ptr - internal)); | |
1998 | ||
c8e7bf0d NC |
1999 | return internal; |
2000 | } | |
252b5132 RH |
2001 | |
2002 | long | |
c8e7bf0d | 2003 | coff_get_reloc_upper_bound (bfd *abfd, sec_ptr asect) |
252b5132 RH |
2004 | { |
2005 | if (bfd_get_format (abfd) != bfd_object) | |
2006 | { | |
2007 | bfd_set_error (bfd_error_invalid_operation); | |
2008 | return -1; | |
2009 | } | |
242a1159 | 2010 | #if SIZEOF_LONG == SIZEOF_INT |
7a6e0d89 AM |
2011 | if (asect->reloc_count >= LONG_MAX / sizeof (arelent *)) |
2012 | { | |
2013 | bfd_set_error (bfd_error_file_too_big); | |
2014 | return -1; | |
2015 | } | |
242a1159 | 2016 | #endif |
252b5132 RH |
2017 | return (asect->reloc_count + 1) * sizeof (arelent *); |
2018 | } | |
2019 | ||
2020 | asymbol * | |
c8e7bf0d | 2021 | coff_make_empty_symbol (bfd *abfd) |
252b5132 | 2022 | { |
dc810e39 | 2023 | bfd_size_type amt = sizeof (coff_symbol_type); |
d3ce72d0 | 2024 | coff_symbol_type *new_symbol = (coff_symbol_type *) bfd_zalloc (abfd, amt); |
c8e7bf0d | 2025 | |
d3ce72d0 | 2026 | if (new_symbol == NULL) |
c8e7bf0d | 2027 | return NULL; |
d3ce72d0 | 2028 | new_symbol->symbol.section = 0; |
a5c71af8 | 2029 | new_symbol->native = NULL; |
d3ce72d0 NC |
2030 | new_symbol->lineno = NULL; |
2031 | new_symbol->done_lineno = FALSE; | |
2032 | new_symbol->symbol.the_bfd = abfd; | |
c8e7bf0d | 2033 | |
d3ce72d0 | 2034 | return & new_symbol->symbol; |
252b5132 RH |
2035 | } |
2036 | ||
2037 | /* Make a debugging symbol. */ | |
2038 | ||
2039 | asymbol * | |
c8e7bf0d NC |
2040 | coff_bfd_make_debug_symbol (bfd *abfd, |
2041 | void * ptr ATTRIBUTE_UNUSED, | |
2042 | unsigned long sz ATTRIBUTE_UNUSED) | |
252b5132 | 2043 | { |
dc810e39 | 2044 | bfd_size_type amt = sizeof (coff_symbol_type); |
d3ce72d0 | 2045 | coff_symbol_type *new_symbol = (coff_symbol_type *) bfd_alloc (abfd, amt); |
c8e7bf0d | 2046 | |
d3ce72d0 | 2047 | if (new_symbol == NULL) |
c8e7bf0d | 2048 | return NULL; |
252b5132 RH |
2049 | /* @@ The 10 is a guess at a plausible maximum number of aux entries |
2050 | (but shouldn't be a constant). */ | |
dc810e39 | 2051 | amt = sizeof (combined_entry_type) * 10; |
d3ce72d0 NC |
2052 | new_symbol->native = (combined_entry_type *) bfd_zalloc (abfd, amt); |
2053 | if (!new_symbol->native) | |
c8e7bf0d | 2054 | return NULL; |
a5c71af8 | 2055 | new_symbol->native->is_sym = TRUE; |
d3ce72d0 NC |
2056 | new_symbol->symbol.section = bfd_abs_section_ptr; |
2057 | new_symbol->symbol.flags = BSF_DEBUGGING; | |
2058 | new_symbol->lineno = NULL; | |
2059 | new_symbol->done_lineno = FALSE; | |
2060 | new_symbol->symbol.the_bfd = abfd; | |
68ffbac6 | 2061 | |
d3ce72d0 | 2062 | return & new_symbol->symbol; |
252b5132 RH |
2063 | } |
2064 | ||
252b5132 | 2065 | void |
c8e7bf0d | 2066 | coff_get_symbol_info (bfd *abfd, asymbol *symbol, symbol_info *ret) |
252b5132 RH |
2067 | { |
2068 | bfd_symbol_info (symbol, ret); | |
c8e7bf0d | 2069 | |
252b5132 | 2070 | if (coffsymbol (symbol)->native != NULL |
a5c71af8 NC |
2071 | && coffsymbol (symbol)->native->fix_value |
2072 | && coffsymbol (symbol)->native->is_sym) | |
c8e7bf0d | 2073 | ret->value = coffsymbol (symbol)->native->u.syment.n_value - |
d2df793a | 2074 | (bfd_hostptr_t) obj_raw_syments (abfd); |
252b5132 RH |
2075 | } |
2076 | ||
252b5132 RH |
2077 | /* Print out information about COFF symbol. */ |
2078 | ||
2079 | void | |
c8e7bf0d NC |
2080 | coff_print_symbol (bfd *abfd, |
2081 | void * filep, | |
2082 | asymbol *symbol, | |
2083 | bfd_print_symbol_type how) | |
252b5132 | 2084 | { |
c8e7bf0d | 2085 | FILE * file = (FILE *) filep; |
252b5132 RH |
2086 | |
2087 | switch (how) | |
2088 | { | |
2089 | case bfd_print_symbol_name: | |
2090 | fprintf (file, "%s", symbol->name); | |
2091 | break; | |
2092 | ||
2093 | case bfd_print_symbol_more: | |
2094 | fprintf (file, "coff %s %s", | |
2095 | coffsymbol (symbol)->native ? "n" : "g", | |
2096 | coffsymbol (symbol)->lineno ? "l" : " "); | |
2097 | break; | |
2098 | ||
2099 | case bfd_print_symbol_all: | |
2100 | if (coffsymbol (symbol)->native) | |
2101 | { | |
beb1bf64 | 2102 | bfd_vma val; |
252b5132 RH |
2103 | unsigned int aux; |
2104 | combined_entry_type *combined = coffsymbol (symbol)->native; | |
2105 | combined_entry_type *root = obj_raw_syments (abfd); | |
2106 | struct lineno_cache_entry *l = coffsymbol (symbol)->lineno; | |
2107 | ||
2108 | fprintf (file, "[%3ld]", (long) (combined - root)); | |
2109 | ||
f41e4712 NC |
2110 | /* PR 17512: file: 079-33786-0.001:0.1. */ |
2111 | if (combined < obj_raw_syments (abfd) | |
2112 | || combined >= obj_raw_syments (abfd) + obj_raw_syment_count (abfd)) | |
2113 | { | |
2114 | fprintf (file, _("<corrupt info> %s"), symbol->name); | |
2115 | break; | |
2116 | } | |
2117 | ||
a5c71af8 | 2118 | BFD_ASSERT (combined->is_sym); |
252b5132 | 2119 | if (! combined->fix_value) |
beb1bf64 | 2120 | val = (bfd_vma) combined->u.syment.n_value; |
252b5132 | 2121 | else |
d2df793a | 2122 | val = combined->u.syment.n_value - (bfd_hostptr_t) root; |
252b5132 | 2123 | |
7920ce38 | 2124 | fprintf (file, "(sec %2d)(fl 0x%02x)(ty %3x)(scl %3d) (nx %d) 0x", |
252b5132 RH |
2125 | combined->u.syment.n_scnum, |
2126 | combined->u.syment.n_flags, | |
2127 | combined->u.syment.n_type, | |
2128 | combined->u.syment.n_sclass, | |
745c12f8 | 2129 | combined->u.syment.n_numaux); |
ebf12fbe | 2130 | bfd_fprintf_vma (abfd, file, val); |
745c12f8 | 2131 | fprintf (file, " %s", symbol->name); |
252b5132 RH |
2132 | |
2133 | for (aux = 0; aux < combined->u.syment.n_numaux; aux++) | |
2134 | { | |
2135 | combined_entry_type *auxp = combined + aux + 1; | |
2136 | long tagndx; | |
2137 | ||
a5c71af8 | 2138 | BFD_ASSERT (! auxp->is_sym); |
252b5132 RH |
2139 | if (auxp->fix_tag) |
2140 | tagndx = auxp->u.auxent.x_sym.x_tagndx.p - root; | |
2141 | else | |
2142 | tagndx = auxp->u.auxent.x_sym.x_tagndx.l; | |
2143 | ||
2144 | fprintf (file, "\n"); | |
2145 | ||
2146 | if (bfd_coff_print_aux (abfd, file, root, combined, auxp, aux)) | |
2147 | continue; | |
2148 | ||
2149 | switch (combined->u.syment.n_sclass) | |
2150 | { | |
2151 | case C_FILE: | |
2152 | fprintf (file, "File "); | |
2153 | break; | |
2154 | ||
2155 | case C_STAT: | |
2156 | if (combined->u.syment.n_type == T_NULL) | |
c8e7bf0d | 2157 | /* Probably a section symbol ? */ |
252b5132 RH |
2158 | { |
2159 | fprintf (file, "AUX scnlen 0x%lx nreloc %d nlnno %d", | |
0af1713e | 2160 | (unsigned long) auxp->u.auxent.x_scn.x_scnlen, |
252b5132 RH |
2161 | auxp->u.auxent.x_scn.x_nreloc, |
2162 | auxp->u.auxent.x_scn.x_nlinno); | |
2163 | if (auxp->u.auxent.x_scn.x_checksum != 0 | |
2164 | || auxp->u.auxent.x_scn.x_associated != 0 | |
2165 | || auxp->u.auxent.x_scn.x_comdat != 0) | |
2166 | fprintf (file, " checksum 0x%lx assoc %d comdat %d", | |
2167 | auxp->u.auxent.x_scn.x_checksum, | |
2168 | auxp->u.auxent.x_scn.x_associated, | |
2169 | auxp->u.auxent.x_scn.x_comdat); | |
2170 | break; | |
2171 | } | |
1a0670f3 | 2172 | /* Fall through. */ |
312191a6 | 2173 | case C_EXT: |
8602d4fe | 2174 | case C_AIX_WEAKEXT: |
312191a6 ILT |
2175 | if (ISFCN (combined->u.syment.n_type)) |
2176 | { | |
cea4409c AM |
2177 | long next, llnos; |
2178 | ||
2179 | if (auxp->fix_end) | |
2180 | next = (auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p | |
2181 | - root); | |
2182 | else | |
2183 | next = auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l; | |
2184 | llnos = auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
312191a6 | 2185 | fprintf (file, |
3d66c4f7 | 2186 | "AUX tagndx %ld ttlsiz 0x%lx lnnos %ld next %ld", |
0af1713e AM |
2187 | tagndx, |
2188 | (unsigned long) auxp->u.auxent.x_sym.x_misc.x_fsize, | |
cea4409c | 2189 | llnos, next); |
312191a6 ILT |
2190 | break; |
2191 | } | |
1a0670f3 | 2192 | /* Fall through. */ |
252b5132 RH |
2193 | default: |
2194 | fprintf (file, "AUX lnno %d size 0x%x tagndx %ld", | |
2195 | auxp->u.auxent.x_sym.x_misc.x_lnsz.x_lnno, | |
2196 | auxp->u.auxent.x_sym.x_misc.x_lnsz.x_size, | |
2197 | tagndx); | |
2198 | if (auxp->fix_end) | |
2199 | fprintf (file, " endndx %ld", | |
2200 | ((long) | |
2201 | (auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p | |
2202 | - root))); | |
2203 | break; | |
2204 | } | |
2205 | } | |
2206 | ||
2207 | if (l) | |
2208 | { | |
2209 | fprintf (file, "\n%s :", l->u.sym->name); | |
2210 | l++; | |
2211 | while (l->line_number) | |
2212 | { | |
f41e4712 NC |
2213 | if (l->line_number > 0) |
2214 | { | |
2215 | fprintf (file, "\n%4d : ", l->line_number); | |
2216 | bfd_fprintf_vma (abfd, file, l->u.offset + symbol->section->vma); | |
2217 | } | |
252b5132 RH |
2218 | l++; |
2219 | } | |
2220 | } | |
2221 | } | |
2222 | else | |
2223 | { | |
c8e7bf0d | 2224 | bfd_print_symbol_vandf (abfd, (void *) file, symbol); |
252b5132 RH |
2225 | fprintf (file, " %-5s %s %s %s", |
2226 | symbol->section->name, | |
2227 | coffsymbol (symbol)->native ? "n" : "g", | |
2228 | coffsymbol (symbol)->lineno ? "l" : " ", | |
2229 | symbol->name); | |
2230 | } | |
2231 | } | |
2232 | } | |
2233 | ||
2234 | /* Return whether a symbol name implies a local symbol. In COFF, | |
2235 | local symbols generally start with ``.L''. Most targets use this | |
2236 | function for the is_local_label_name entry point, but some may | |
2237 | override it. */ | |
2238 | ||
b34976b6 | 2239 | bfd_boolean |
c8e7bf0d NC |
2240 | _bfd_coff_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, |
2241 | const char *name) | |
252b5132 | 2242 | { |
b34976b6 | 2243 | return name[0] == '.' && name[1] == 'L'; |
252b5132 RH |
2244 | } |
2245 | ||
9a968f43 NC |
2246 | /* Provided a BFD, a section and an offset (in bytes, not octets) into the |
2247 | section, calculate and return the name of the source file and the line | |
2248 | nearest to the wanted location. */ | |
435b1e90 | 2249 | |
b34976b6 | 2250 | bfd_boolean |
fc28f9aa | 2251 | coff_find_nearest_line_with_names (bfd *abfd, |
07d6d2b8 AM |
2252 | asymbol **symbols, |
2253 | asection *section, | |
2254 | bfd_vma offset, | |
2255 | const char **filename_ptr, | |
2256 | const char **functionname_ptr, | |
2257 | unsigned int *line_ptr, | |
2258 | const struct dwarf_debug_section *debug_sections) | |
252b5132 | 2259 | { |
b34976b6 | 2260 | bfd_boolean found; |
252b5132 RH |
2261 | unsigned int i; |
2262 | unsigned int line_base; | |
2263 | coff_data_type *cof = coff_data (abfd); | |
c8e7bf0d | 2264 | /* Run through the raw syments if available. */ |
252b5132 RH |
2265 | combined_entry_type *p; |
2266 | combined_entry_type *pend; | |
2267 | alent *l; | |
2268 | struct coff_section_tdata *sec_data; | |
dc810e39 | 2269 | bfd_size_type amt; |
252b5132 RH |
2270 | |
2271 | /* Before looking through the symbol table, try to use a .stab | |
2272 | section to find the information. */ | |
2273 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
2274 | &found, filename_ptr, | |
2275 | functionname_ptr, line_ptr, | |
51db3708 | 2276 | &coff_data(abfd)->line_info)) |
b34976b6 | 2277 | return FALSE; |
51db3708 | 2278 | |
4ca29a6a | 2279 | if (found) |
b34976b6 | 2280 | return TRUE; |
4ca29a6a | 2281 | |
51db3708 | 2282 | /* Also try examining DWARF2 debugging information. */ |
fb167eb2 | 2283 | if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset, |
51db3708 | 2284 | filename_ptr, functionname_ptr, |
9defd221 | 2285 | line_ptr, NULL, debug_sections, |
51db3708 | 2286 | &coff_data(abfd)->dwarf2_find_line_info)) |
b34976b6 | 2287 | return TRUE; |
51db3708 | 2288 | |
e643cb45 NC |
2289 | sec_data = coff_section_data (abfd, section); |
2290 | ||
425bd9e1 NC |
2291 | /* If the DWARF lookup failed, but there is DWARF information available |
2292 | then the problem might be that the file has been rebased. This tool | |
2293 | changes the VMAs of all the sections, but it does not update the DWARF | |
2294 | information. So try again, using a bias against the address sought. */ | |
2295 | if (coff_data (abfd)->dwarf2_find_line_info != NULL) | |
2296 | { | |
219d6836 | 2297 | bfd_signed_vma bias = 0; |
425bd9e1 | 2298 | |
e643cb45 NC |
2299 | /* Create a cache of the result for the next call. */ |
2300 | if (sec_data == NULL && section->owner == abfd) | |
2301 | { | |
2302 | amt = sizeof (struct coff_section_tdata); | |
2303 | section->used_by_bfd = bfd_zalloc (abfd, amt); | |
2304 | sec_data = (struct coff_section_tdata *) section->used_by_bfd; | |
2305 | } | |
2306 | ||
2307 | if (sec_data != NULL && sec_data->saved_bias) | |
2308 | bias = sec_data->saved_bias; | |
219d6836 | 2309 | else if (symbols) |
e643cb45 NC |
2310 | { |
2311 | bias = _bfd_dwarf2_find_symbol_bias (symbols, | |
2312 | & coff_data (abfd)->dwarf2_find_line_info); | |
219d6836 | 2313 | |
e643cb45 NC |
2314 | if (sec_data) |
2315 | { | |
2316 | sec_data->saved_bias = TRUE; | |
2317 | sec_data->bias = bias; | |
2318 | } | |
2319 | } | |
1b786873 | 2320 | |
425bd9e1 NC |
2321 | if (bias |
2322 | && _bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, | |
2323 | offset + bias, | |
2324 | filename_ptr, functionname_ptr, | |
9defd221 | 2325 | line_ptr, NULL, debug_sections, |
425bd9e1 NC |
2326 | &coff_data(abfd)->dwarf2_find_line_info)) |
2327 | return TRUE; | |
2328 | } | |
2329 | ||
252b5132 RH |
2330 | *filename_ptr = 0; |
2331 | *functionname_ptr = 0; | |
2332 | *line_ptr = 0; | |
2333 | ||
c8e7bf0d | 2334 | /* Don't try and find line numbers in a non coff file. */ |
9bd09e22 | 2335 | if (!bfd_family_coff (abfd)) |
b34976b6 | 2336 | return FALSE; |
252b5132 RH |
2337 | |
2338 | if (cof == NULL) | |
b34976b6 | 2339 | return FALSE; |
252b5132 RH |
2340 | |
2341 | /* Find the first C_FILE symbol. */ | |
2342 | p = cof->raw_syments; | |
2343 | if (!p) | |
b34976b6 | 2344 | return FALSE; |
252b5132 RH |
2345 | |
2346 | pend = p + cof->raw_syment_count; | |
2347 | while (p < pend) | |
2348 | { | |
a5c71af8 | 2349 | BFD_ASSERT (p->is_sym); |
252b5132 RH |
2350 | if (p->u.syment.n_sclass == C_FILE) |
2351 | break; | |
2352 | p += 1 + p->u.syment.n_numaux; | |
2353 | } | |
2354 | ||
2355 | if (p < pend) | |
2356 | { | |
2357 | bfd_vma sec_vma; | |
2358 | bfd_vma maxdiff; | |
2359 | ||
2360 | /* Look through the C_FILE symbols to find the best one. */ | |
fd361982 | 2361 | sec_vma = bfd_section_vma (section); |
252b5132 RH |
2362 | *filename_ptr = (char *) p->u.syment._n._n_n._n_offset; |
2363 | maxdiff = (bfd_vma) 0 - (bfd_vma) 1; | |
2364 | while (1) | |
2365 | { | |
4d9e2b27 | 2366 | bfd_vma file_addr; |
252b5132 RH |
2367 | combined_entry_type *p2; |
2368 | ||
2369 | for (p2 = p + 1 + p->u.syment.n_numaux; | |
2370 | p2 < pend; | |
2371 | p2 += 1 + p2->u.syment.n_numaux) | |
2372 | { | |
a5c71af8 | 2373 | BFD_ASSERT (p2->is_sym); |
252b5132 RH |
2374 | if (p2->u.syment.n_scnum > 0 |
2375 | && (section | |
2376 | == coff_section_from_bfd_index (abfd, | |
2377 | p2->u.syment.n_scnum))) | |
2378 | break; | |
2379 | if (p2->u.syment.n_sclass == C_FILE) | |
2380 | { | |
2381 | p2 = pend; | |
2382 | break; | |
2383 | } | |
2384 | } | |
a5c71af8 NC |
2385 | if (p2 >= pend) |
2386 | break; | |
252b5132 | 2387 | |
4d9e2b27 NC |
2388 | file_addr = (bfd_vma) p2->u.syment.n_value; |
2389 | /* PR 11512: Include the section address of the function name symbol. */ | |
2390 | if (p2->u.syment.n_scnum > 0) | |
2391 | file_addr += coff_section_from_bfd_index (abfd, | |
2392 | p2->u.syment.n_scnum)->vma; | |
798c1fb8 | 2393 | /* We use <= MAXDIFF here so that if we get a zero length |
07d6d2b8 | 2394 | file, we actually use the next file entry. */ |
252b5132 | 2395 | if (p2 < pend |
4d9e2b27 NC |
2396 | && offset + sec_vma >= file_addr |
2397 | && offset + sec_vma - file_addr <= maxdiff) | |
252b5132 RH |
2398 | { |
2399 | *filename_ptr = (char *) p->u.syment._n._n_n._n_offset; | |
2400 | maxdiff = offset + sec_vma - p2->u.syment.n_value; | |
2401 | } | |
2402 | ||
f14080d4 AM |
2403 | if (p->u.syment.n_value >= cof->raw_syment_count) |
2404 | break; | |
2405 | ||
252b5132 RH |
2406 | /* Avoid endless loops on erroneous files by ensuring that |
2407 | we always move forward in the file. */ | |
cea4409c | 2408 | if (p >= cof->raw_syments + p->u.syment.n_value) |
252b5132 RH |
2409 | break; |
2410 | ||
2411 | p = cof->raw_syments + p->u.syment.n_value; | |
f14080d4 | 2412 | if (!p->is_sym || p->u.syment.n_sclass != C_FILE) |
252b5132 RH |
2413 | break; |
2414 | } | |
2415 | } | |
2416 | ||
e643cb45 NC |
2417 | if (section->lineno_count == 0) |
2418 | { | |
2419 | *functionname_ptr = NULL; | |
2420 | *line_ptr = 0; | |
2421 | return TRUE; | |
2422 | } | |
2423 | ||
2424 | /* Now wander though the raw linenumbers of the section. | |
2425 | If we have been called on this section before, and the offset | |
2426 | we want is further down then we can prime the lookup loop. */ | |
252b5132 RH |
2427 | if (sec_data != NULL |
2428 | && sec_data->i > 0 | |
2429 | && offset >= sec_data->offset) | |
2430 | { | |
2431 | i = sec_data->i; | |
2432 | *functionname_ptr = sec_data->function; | |
2433 | line_base = sec_data->line_base; | |
2434 | } | |
2435 | else | |
2436 | { | |
2437 | i = 0; | |
2438 | line_base = 0; | |
2439 | } | |
2440 | ||
2441 | if (section->lineno != NULL) | |
2442 | { | |
798c1fb8 ILT |
2443 | bfd_vma last_value = 0; |
2444 | ||
252b5132 RH |
2445 | l = §ion->lineno[i]; |
2446 | ||
2447 | for (; i < section->lineno_count; i++) | |
2448 | { | |
2449 | if (l->line_number == 0) | |
2450 | { | |
c8e7bf0d | 2451 | /* Get the symbol this line number points at. */ |
252b5132 RH |
2452 | coff_symbol_type *coff = (coff_symbol_type *) (l->u.sym); |
2453 | if (coff->symbol.value > offset) | |
2454 | break; | |
e643cb45 | 2455 | |
252b5132 | 2456 | *functionname_ptr = coff->symbol.name; |
798c1fb8 | 2457 | last_value = coff->symbol.value; |
252b5132 RH |
2458 | if (coff->native) |
2459 | { | |
2460 | combined_entry_type *s = coff->native; | |
a5c71af8 NC |
2461 | |
2462 | BFD_ASSERT (s->is_sym); | |
252b5132 RH |
2463 | s = s + 1 + s->u.syment.n_numaux; |
2464 | ||
2465 | /* In XCOFF a debugging symbol can follow the | |
2466 | function symbol. */ | |
2467 | if (s->u.syment.n_scnum == N_DEBUG) | |
2468 | s = s + 1 + s->u.syment.n_numaux; | |
2469 | ||
2470 | /* S should now point to the .bf of the function. */ | |
2471 | if (s->u.syment.n_numaux) | |
2472 | { | |
2473 | /* The linenumber is stored in the auxent. */ | |
2474 | union internal_auxent *a = &((s + 1)->u.auxent); | |
a5c71af8 | 2475 | |
252b5132 RH |
2476 | line_base = a->x_sym.x_misc.x_lnsz.x_lnno; |
2477 | *line_ptr = line_base; | |
2478 | } | |
2479 | } | |
2480 | } | |
2481 | else | |
2482 | { | |
2483 | if (l->u.offset > offset) | |
2484 | break; | |
2485 | *line_ptr = l->line_number + line_base - 1; | |
2486 | } | |
2487 | l++; | |
2488 | } | |
798c1fb8 ILT |
2489 | |
2490 | /* If we fell off the end of the loop, then assume that this | |
2491 | symbol has no line number info. Otherwise, symbols with no | |
2492 | line number info get reported with the line number of the | |
2493 | last line of the last symbol which does have line number | |
2494 | info. We use 0x100 as a slop to account for cases where the | |
2495 | last line has executable code. */ | |
2496 | if (i >= section->lineno_count | |
2497 | && last_value != 0 | |
2498 | && offset - last_value > 0x100) | |
2499 | { | |
2500 | *functionname_ptr = NULL; | |
2501 | *line_ptr = 0; | |
2502 | } | |
252b5132 RH |
2503 | } |
2504 | ||
2505 | /* Cache the results for the next call. */ | |
2506 | if (sec_data == NULL && section->owner == abfd) | |
2507 | { | |
dc810e39 | 2508 | amt = sizeof (struct coff_section_tdata); |
c8e7bf0d | 2509 | section->used_by_bfd = bfd_zalloc (abfd, amt); |
252b5132 RH |
2510 | sec_data = (struct coff_section_tdata *) section->used_by_bfd; |
2511 | } | |
e643cb45 | 2512 | |
252b5132 RH |
2513 | if (sec_data != NULL) |
2514 | { | |
2515 | sec_data->offset = offset; | |
70df0c05 | 2516 | sec_data->i = i - 1; |
252b5132 RH |
2517 | sec_data->function = *functionname_ptr; |
2518 | sec_data->line_base = line_base; | |
2519 | } | |
2520 | ||
b34976b6 | 2521 | return TRUE; |
252b5132 RH |
2522 | } |
2523 | ||
fc28f9aa TG |
2524 | bfd_boolean |
2525 | coff_find_nearest_line (bfd *abfd, | |
fc28f9aa | 2526 | asymbol **symbols, |
fb167eb2 | 2527 | asection *section, |
fc28f9aa TG |
2528 | bfd_vma offset, |
2529 | const char **filename_ptr, | |
2530 | const char **functionname_ptr, | |
fb167eb2 AM |
2531 | unsigned int *line_ptr, |
2532 | unsigned int *discriminator_ptr) | |
fc28f9aa | 2533 | { |
fb167eb2 AM |
2534 | if (discriminator_ptr) |
2535 | *discriminator_ptr = 0; | |
2536 | return coff_find_nearest_line_with_names (abfd, symbols, section, offset, | |
07d6d2b8 AM |
2537 | filename_ptr, functionname_ptr, |
2538 | line_ptr, dwarf_debug_sections); | |
fc28f9aa TG |
2539 | } |
2540 | ||
4ab527b0 FF |
2541 | bfd_boolean |
2542 | coff_find_inliner_info (bfd *abfd, | |
2543 | const char **filename_ptr, | |
2544 | const char **functionname_ptr, | |
2545 | unsigned int *line_ptr) | |
2546 | { | |
2547 | bfd_boolean found; | |
2548 | ||
2549 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
2550 | functionname_ptr, line_ptr, | |
2551 | &coff_data(abfd)->dwarf2_find_line_info); | |
2552 | return (found); | |
2553 | } | |
2554 | ||
252b5132 | 2555 | int |
a6b96beb | 2556 | coff_sizeof_headers (bfd *abfd, struct bfd_link_info *info) |
252b5132 RH |
2557 | { |
2558 | size_t size; | |
2559 | ||
0e1862bb | 2560 | if (!bfd_link_relocatable (info)) |
c8e7bf0d | 2561 | size = bfd_coff_filhsz (abfd) + bfd_coff_aoutsz (abfd); |
252b5132 | 2562 | else |
c8e7bf0d | 2563 | size = bfd_coff_filhsz (abfd); |
252b5132 RH |
2564 | |
2565 | size += abfd->section_count * bfd_coff_scnhsz (abfd); | |
2566 | return size; | |
2567 | } | |
2568 | ||
2569 | /* Change the class of a coff symbol held by BFD. */ | |
c8e7bf0d | 2570 | |
b34976b6 | 2571 | bfd_boolean |
07d6d2b8 AM |
2572 | bfd_coff_set_symbol_class (bfd * abfd, |
2573 | asymbol * symbol, | |
2574 | unsigned int symbol_class) | |
252b5132 RH |
2575 | { |
2576 | coff_symbol_type * csym; | |
2577 | ||
f4943d82 | 2578 | csym = coff_symbol_from (symbol); |
252b5132 RH |
2579 | if (csym == NULL) |
2580 | { | |
2581 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 2582 | return FALSE; |
252b5132 RH |
2583 | } |
2584 | else if (csym->native == NULL) | |
2585 | { | |
2586 | /* This is an alien symbol which no native coff backend data. | |
2587 | We cheat here by creating a fake native entry for it and | |
2588 | then filling in the class. This code is based on that in | |
2589 | coff_write_alien_symbol(). */ | |
244148ad | 2590 | |
252b5132 | 2591 | combined_entry_type * native; |
dc810e39 | 2592 | bfd_size_type amt = sizeof (* native); |
252b5132 | 2593 | |
a50b1753 | 2594 | native = (combined_entry_type *) bfd_zalloc (abfd, amt); |
252b5132 | 2595 | if (native == NULL) |
b34976b6 | 2596 | return FALSE; |
252b5132 | 2597 | |
a5c71af8 | 2598 | native->is_sym = TRUE; |
252b5132 | 2599 | native->u.syment.n_type = T_NULL; |
96d56e9f | 2600 | native->u.syment.n_sclass = symbol_class; |
244148ad | 2601 | |
252b5132 RH |
2602 | if (bfd_is_und_section (symbol->section)) |
2603 | { | |
2604 | native->u.syment.n_scnum = N_UNDEF; | |
2605 | native->u.syment.n_value = symbol->value; | |
2606 | } | |
2607 | else if (bfd_is_com_section (symbol->section)) | |
2608 | { | |
2609 | native->u.syment.n_scnum = N_UNDEF; | |
2610 | native->u.syment.n_value = symbol->value; | |
2611 | } | |
2612 | else | |
2613 | { | |
2614 | native->u.syment.n_scnum = | |
2615 | symbol->section->output_section->target_index; | |
2616 | native->u.syment.n_value = (symbol->value | |
2617 | + symbol->section->output_offset); | |
2618 | if (! obj_pe (abfd)) | |
2619 | native->u.syment.n_value += symbol->section->output_section->vma; | |
244148ad | 2620 | |
08da05b0 | 2621 | /* Copy the any flags from the file header into the symbol. |
252b5132 RH |
2622 | FIXME: Why? */ |
2623 | native->u.syment.n_flags = bfd_asymbol_bfd (& csym->symbol)->flags; | |
2624 | } | |
244148ad | 2625 | |
252b5132 RH |
2626 | csym->native = native; |
2627 | } | |
2628 | else | |
96d56e9f | 2629 | csym->native->u.syment.n_sclass = symbol_class; |
244148ad | 2630 | |
b34976b6 | 2631 | return TRUE; |
252b5132 | 2632 | } |
082b7297 | 2633 | |
c77ec726 AM |
2634 | bfd_boolean |
2635 | _bfd_coff_section_already_linked (bfd *abfd, | |
2636 | asection *sec, | |
2637 | struct bfd_link_info *info) | |
2638 | { | |
2639 | flagword flags; | |
2640 | const char *name, *key; | |
2641 | struct bfd_section_already_linked *l; | |
2642 | struct bfd_section_already_linked_hash_entry *already_linked_list; | |
2643 | struct coff_comdat_info *s_comdat; | |
2644 | ||
2219ae0b L |
2645 | if (sec->output_section == bfd_abs_section_ptr) |
2646 | return FALSE; | |
2647 | ||
c77ec726 AM |
2648 | flags = sec->flags; |
2649 | if ((flags & SEC_LINK_ONCE) == 0) | |
2650 | return FALSE; | |
2651 | ||
2652 | /* The COFF backend linker doesn't support group sections. */ | |
2653 | if ((flags & SEC_GROUP) != 0) | |
2654 | return FALSE; | |
2655 | ||
fd361982 | 2656 | name = bfd_section_name (sec); |
c77ec726 AM |
2657 | s_comdat = bfd_coff_get_comdat_section (abfd, sec); |
2658 | ||
2659 | if (s_comdat != NULL) | |
2660 | key = s_comdat->name; | |
2661 | else | |
2662 | { | |
2663 | if (CONST_STRNEQ (name, ".gnu.linkonce.") | |
2664 | && (key = strchr (name + sizeof (".gnu.linkonce.") - 1, '.')) != NULL) | |
2665 | key++; | |
2666 | else | |
2667 | /* FIXME: gcc as of 2011-09 emits sections like .text$<key>, | |
2668 | .xdata$<key> and .pdata$<key> only the first of which has a | |
2669 | comdat key. Should these all match the LTO IR key? */ | |
2670 | key = name; | |
2671 | } | |
2672 | ||
2673 | already_linked_list = bfd_section_already_linked_table_lookup (key); | |
2674 | ||
2675 | for (l = already_linked_list->entry; l != NULL; l = l->next) | |
2676 | { | |
2677 | struct coff_comdat_info *l_comdat; | |
2678 | ||
2679 | l_comdat = bfd_coff_get_comdat_section (l->sec->owner, l->sec); | |
2680 | ||
2681 | /* The section names must match, and both sections must be | |
2682 | comdat and have the same comdat name, or both sections must | |
2683 | be non-comdat. LTO IR plugin sections are an exception. They | |
2684 | are always named .gnu.linkonce.t.<key> (<key> is some string) | |
2685 | and match any comdat section with comdat name of <key>, and | |
2686 | any linkonce section with the same suffix, ie. | |
2687 | .gnu.linkonce.*.<key>. */ | |
2688 | if (((s_comdat != NULL) == (l_comdat != NULL) | |
2689 | && strcmp (name, l->sec->name) == 0) | |
2690 | || (l->sec->owner->flags & BFD_PLUGIN) != 0) | |
2691 | { | |
2692 | /* The section has already been linked. See if we should | |
2693 | issue a warning. */ | |
2694 | return _bfd_handle_already_linked (sec, l, info); | |
2695 | } | |
2696 | } | |
2697 | ||
2698 | /* This is the first section with this name. Record it. */ | |
2699 | if (!bfd_section_already_linked_table_insert (already_linked_list, sec)) | |
2700 | info->callbacks->einfo (_("%F%P: already_linked_table: %E\n")); | |
2701 | return FALSE; | |
2702 | } | |
0f088b2a KT |
2703 | |
2704 | /* Initialize COOKIE for input bfd ABFD. */ | |
2705 | ||
2706 | static bfd_boolean | |
2707 | init_reloc_cookie (struct coff_reloc_cookie *cookie, | |
2708 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
2709 | bfd *abfd) | |
2710 | { | |
2711 | /* Sometimes the symbol table does not yet have been loaded here. */ | |
2712 | bfd_coff_slurp_symbol_table (abfd); | |
2713 | ||
2714 | cookie->abfd = abfd; | |
2715 | cookie->sym_hashes = obj_coff_sym_hashes (abfd); | |
2716 | ||
2717 | cookie->symbols = obj_symbols (abfd); | |
2718 | ||
2719 | return TRUE; | |
2720 | } | |
2721 | ||
2722 | /* Free the memory allocated by init_reloc_cookie, if appropriate. */ | |
2723 | ||
2724 | static void | |
2725 | fini_reloc_cookie (struct coff_reloc_cookie *cookie ATTRIBUTE_UNUSED, | |
2726 | bfd *abfd ATTRIBUTE_UNUSED) | |
2727 | { | |
2728 | /* Nothing to do. */ | |
2729 | } | |
2730 | ||
2731 | /* Initialize the relocation information in COOKIE for input section SEC | |
2732 | of input bfd ABFD. */ | |
2733 | ||
2734 | static bfd_boolean | |
2735 | init_reloc_cookie_rels (struct coff_reloc_cookie *cookie, | |
2736 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
2737 | bfd *abfd, | |
2738 | asection *sec) | |
2739 | { | |
2740 | if (sec->reloc_count == 0) | |
2741 | { | |
2742 | cookie->rels = NULL; | |
2743 | cookie->relend = NULL; | |
2744 | cookie->rel = NULL; | |
2745 | return TRUE; | |
2746 | } | |
2747 | ||
2748 | cookie->rels = _bfd_coff_read_internal_relocs (abfd, sec, FALSE, NULL, 0, NULL); | |
2749 | ||
2750 | if (cookie->rels == NULL) | |
2751 | return FALSE; | |
2752 | ||
2753 | cookie->rel = cookie->rels; | |
2754 | cookie->relend = (cookie->rels + sec->reloc_count); | |
2755 | return TRUE; | |
2756 | } | |
2757 | ||
2758 | /* Free the memory allocated by init_reloc_cookie_rels, | |
2759 | if appropriate. */ | |
2760 | ||
2761 | static void | |
2762 | fini_reloc_cookie_rels (struct coff_reloc_cookie *cookie, | |
2763 | asection *sec) | |
2764 | { | |
147d994b NC |
2765 | if (cookie->rels |
2766 | /* PR 20401. The relocs may not have been cached, so check first. | |
2767 | If the relocs were loaded by init_reloc_cookie_rels() then this | |
2768 | will be the case. FIXME: Would performance be improved if the | |
2769 | relocs *were* cached ? */ | |
2770 | && coff_section_data (NULL, sec) | |
2771 | && coff_section_data (NULL, sec)->relocs != cookie->rels) | |
0f088b2a KT |
2772 | free (cookie->rels); |
2773 | } | |
2774 | ||
2775 | /* Initialize the whole of COOKIE for input section SEC. */ | |
2776 | ||
2777 | static bfd_boolean | |
2778 | init_reloc_cookie_for_section (struct coff_reloc_cookie *cookie, | |
2779 | struct bfd_link_info *info, | |
2780 | asection *sec) | |
2781 | { | |
2782 | if (!init_reloc_cookie (cookie, info, sec->owner)) | |
2783 | return FALSE; | |
2784 | ||
2785 | if (!init_reloc_cookie_rels (cookie, info, sec->owner, sec)) | |
2786 | { | |
2787 | fini_reloc_cookie (cookie, sec->owner); | |
2788 | return FALSE; | |
2789 | } | |
2790 | return TRUE; | |
2791 | } | |
2792 | ||
2793 | /* Free the memory allocated by init_reloc_cookie_for_section, | |
2794 | if appropriate. */ | |
2795 | ||
2796 | static void | |
2797 | fini_reloc_cookie_for_section (struct coff_reloc_cookie *cookie, | |
2798 | asection *sec) | |
2799 | { | |
2800 | fini_reloc_cookie_rels (cookie, sec); | |
2801 | fini_reloc_cookie (cookie, sec->owner); | |
2802 | } | |
2803 | ||
2804 | static asection * | |
2805 | _bfd_coff_gc_mark_hook (asection *sec, | |
2806 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
2807 | struct internal_reloc *rel ATTRIBUTE_UNUSED, | |
2808 | struct coff_link_hash_entry *h, | |
2809 | struct internal_syment *sym) | |
2810 | { | |
2811 | if (h != NULL) | |
2812 | { | |
2813 | switch (h->root.type) | |
07d6d2b8 AM |
2814 | { |
2815 | case bfd_link_hash_defined: | |
2816 | case bfd_link_hash_defweak: | |
2817 | return h->root.u.def.section; | |
0f088b2a | 2818 | |
07d6d2b8 AM |
2819 | case bfd_link_hash_common: |
2820 | return h->root.u.c.p->section; | |
0f088b2a | 2821 | |
0f088b2a | 2822 | case bfd_link_hash_undefweak: |
1fd6d111 TG |
2823 | if (h->symbol_class == C_NT_WEAK && h->numaux == 1) |
2824 | { | |
2825 | /* PE weak externals. A weak symbol may include an auxiliary | |
2826 | record indicating that if the weak symbol is not resolved, | |
2827 | another external symbol is used instead. */ | |
2828 | struct coff_link_hash_entry *h2 = | |
2829 | h->auxbfd->tdata.coff_obj_data->sym_hashes[ | |
2830 | h->aux->x_sym.x_tagndx.l]; | |
2831 | ||
2832 | if (h2 && h2->root.type != bfd_link_hash_undefined) | |
2833 | return h2->root.u.def.section; | |
2834 | } | |
2835 | break; | |
2836 | ||
2837 | case bfd_link_hash_undefined: | |
07d6d2b8 AM |
2838 | default: |
2839 | break; | |
2840 | } | |
0f088b2a KT |
2841 | return NULL; |
2842 | } | |
2843 | ||
2844 | return coff_section_from_bfd_index (sec->owner, sym->n_scnum); | |
2845 | } | |
2846 | ||
2847 | /* COOKIE->rel describes a relocation against section SEC, which is | |
2848 | a section we've decided to keep. Return the section that contains | |
2849 | the relocation symbol, or NULL if no section contains it. */ | |
2850 | ||
2851 | static asection * | |
2852 | _bfd_coff_gc_mark_rsec (struct bfd_link_info *info, asection *sec, | |
2853 | coff_gc_mark_hook_fn gc_mark_hook, | |
2854 | struct coff_reloc_cookie *cookie) | |
2855 | { | |
2856 | struct coff_link_hash_entry *h; | |
2857 | ||
2858 | h = cookie->sym_hashes[cookie->rel->r_symndx]; | |
2859 | if (h != NULL) | |
2860 | { | |
2861 | while (h->root.type == bfd_link_hash_indirect | |
2862 | || h->root.type == bfd_link_hash_warning) | |
2863 | h = (struct coff_link_hash_entry *) h->root.u.i.link; | |
2864 | ||
2865 | return (*gc_mark_hook) (sec, info, cookie->rel, h, NULL); | |
2866 | } | |
2867 | ||
2868 | return (*gc_mark_hook) (sec, info, cookie->rel, NULL, | |
2869 | &(cookie->symbols | |
2870 | + obj_convert (sec->owner)[cookie->rel->r_symndx])->native->u.syment); | |
2871 | } | |
2872 | ||
2873 | static bfd_boolean _bfd_coff_gc_mark | |
2874 | (struct bfd_link_info *, asection *, coff_gc_mark_hook_fn); | |
2875 | ||
2876 | /* COOKIE->rel describes a relocation against section SEC, which is | |
2877 | a section we've decided to keep. Mark the section that contains | |
2878 | the relocation symbol. */ | |
2879 | ||
2880 | static bfd_boolean | |
2881 | _bfd_coff_gc_mark_reloc (struct bfd_link_info *info, | |
2882 | asection *sec, | |
2883 | coff_gc_mark_hook_fn gc_mark_hook, | |
2884 | struct coff_reloc_cookie *cookie) | |
2885 | { | |
2886 | asection *rsec; | |
2887 | ||
2888 | rsec = _bfd_coff_gc_mark_rsec (info, sec, gc_mark_hook, cookie); | |
2889 | if (rsec && !rsec->gc_mark) | |
2890 | { | |
2891 | if (bfd_get_flavour (rsec->owner) != bfd_target_coff_flavour) | |
2892 | rsec->gc_mark = 1; | |
2893 | else if (!_bfd_coff_gc_mark (info, rsec, gc_mark_hook)) | |
2894 | return FALSE; | |
2895 | } | |
2896 | return TRUE; | |
2897 | } | |
2898 | ||
2899 | /* The mark phase of garbage collection. For a given section, mark | |
2900 | it and any sections in this section's group, and all the sections | |
2901 | which define symbols to which it refers. */ | |
2902 | ||
2903 | static bfd_boolean | |
2904 | _bfd_coff_gc_mark (struct bfd_link_info *info, | |
2905 | asection *sec, | |
2906 | coff_gc_mark_hook_fn gc_mark_hook) | |
2907 | { | |
2908 | bfd_boolean ret = TRUE; | |
2909 | ||
2910 | sec->gc_mark = 1; | |
2911 | ||
2912 | /* Look through the section relocs. */ | |
2913 | if ((sec->flags & SEC_RELOC) != 0 | |
2914 | && sec->reloc_count > 0) | |
2915 | { | |
2916 | struct coff_reloc_cookie cookie; | |
2917 | ||
2918 | if (!init_reloc_cookie_for_section (&cookie, info, sec)) | |
07d6d2b8 | 2919 | ret = FALSE; |
0f088b2a | 2920 | else |
07d6d2b8 AM |
2921 | { |
2922 | for (; cookie.rel < cookie.relend; cookie.rel++) | |
2923 | { | |
0f088b2a KT |
2924 | if (!_bfd_coff_gc_mark_reloc (info, sec, gc_mark_hook, &cookie)) |
2925 | { | |
2926 | ret = FALSE; | |
2927 | break; | |
2928 | } | |
2929 | } | |
07d6d2b8 AM |
2930 | fini_reloc_cookie_for_section (&cookie, sec); |
2931 | } | |
0f088b2a KT |
2932 | } |
2933 | ||
2934 | return ret; | |
2935 | } | |
2936 | ||
2937 | static bfd_boolean | |
2938 | _bfd_coff_gc_mark_extra_sections (struct bfd_link_info *info, | |
2939 | coff_gc_mark_hook_fn mark_hook ATTRIBUTE_UNUSED) | |
2940 | { | |
2941 | bfd *ibfd; | |
2942 | ||
2943 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
2944 | { | |
2945 | asection *isec; | |
2946 | bfd_boolean some_kept; | |
2947 | ||
1fd6d111 | 2948 | if (bfd_get_flavour (ibfd) != bfd_target_coff_flavour) |
0f088b2a KT |
2949 | continue; |
2950 | ||
2951 | /* Ensure all linker created sections are kept, and see whether | |
2952 | any other section is already marked. */ | |
2953 | some_kept = FALSE; | |
2954 | for (isec = ibfd->sections; isec != NULL; isec = isec->next) | |
2955 | { | |
2956 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
2957 | isec->gc_mark = 1; | |
2958 | else if (isec->gc_mark) | |
2959 | some_kept = TRUE; | |
2960 | } | |
2961 | ||
2962 | /* If no section in this file will be kept, then we can | |
2963 | toss out debug sections. */ | |
2964 | if (!some_kept) | |
2965 | continue; | |
2966 | ||
2967 | /* Keep debug and special sections like .comment when they are | |
2968 | not part of a group, or when we have single-member groups. */ | |
2969 | for (isec = ibfd->sections; isec != NULL; isec = isec->next) | |
2970 | if ((isec->flags & SEC_DEBUGGING) != 0 | |
2971 | || (isec->flags & (SEC_ALLOC | SEC_LOAD | SEC_RELOC)) == 0) | |
2972 | isec->gc_mark = 1; | |
2973 | } | |
2974 | return TRUE; | |
2975 | } | |
2976 | ||
2977 | /* Sweep symbols in swept sections. Called via coff_link_hash_traverse. */ | |
2978 | ||
2979 | static bfd_boolean | |
2980 | coff_gc_sweep_symbol (struct coff_link_hash_entry *h, | |
2981 | void *data ATTRIBUTE_UNUSED) | |
2982 | { | |
2983 | if (h->root.type == bfd_link_hash_warning) | |
2984 | h = (struct coff_link_hash_entry *) h->root.u.i.link; | |
2985 | ||
2986 | if ((h->root.type == bfd_link_hash_defined | |
2987 | || h->root.type == bfd_link_hash_defweak) | |
2988 | && !h->root.u.def.section->gc_mark | |
2989 | && !(h->root.u.def.section->owner->flags & DYNAMIC)) | |
2990 | { | |
2991 | /* Do our best to hide the symbol. */ | |
2992 | h->root.u.def.section = bfd_und_section_ptr; | |
2993 | h->symbol_class = C_HIDDEN; | |
2994 | } | |
2995 | ||
2996 | return TRUE; | |
2997 | } | |
2998 | ||
2999 | /* The sweep phase of garbage collection. Remove all garbage sections. */ | |
3000 | ||
3001 | typedef bfd_boolean (*gc_sweep_hook_fn) | |
3002 | (bfd *, struct bfd_link_info *, asection *, const struct internal_reloc *); | |
3003 | ||
3004 | static bfd_boolean | |
3005 | coff_gc_sweep (bfd *abfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) | |
3006 | { | |
3007 | bfd *sub; | |
3008 | ||
3009 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) | |
3010 | { | |
3011 | asection *o; | |
3012 | ||
3013 | if (bfd_get_flavour (sub) != bfd_target_coff_flavour) | |
3014 | continue; | |
3015 | ||
3016 | for (o = sub->sections; o != NULL; o = o->next) | |
3017 | { | |
3018 | /* Keep debug and special sections. */ | |
07d6d2b8 | 3019 | if ((o->flags & (SEC_DEBUGGING | SEC_LINKER_CREATED)) != 0 |
0f088b2a KT |
3020 | || (o->flags & (SEC_ALLOC | SEC_LOAD | SEC_RELOC)) == 0) |
3021 | o->gc_mark = 1; | |
07d6d2b8 | 3022 | else if (CONST_STRNEQ (o->name, ".idata") |
0f088b2a KT |
3023 | || CONST_STRNEQ (o->name, ".pdata") |
3024 | || CONST_STRNEQ (o->name, ".xdata") | |
3025 | || CONST_STRNEQ (o->name, ".rsrc")) | |
3026 | o->gc_mark = 1; | |
3027 | ||
3028 | if (o->gc_mark) | |
3029 | continue; | |
3030 | ||
3031 | /* Skip sweeping sections already excluded. */ | |
3032 | if (o->flags & SEC_EXCLUDE) | |
3033 | continue; | |
3034 | ||
3035 | /* Since this is early in the link process, it is simple | |
3036 | to remove a section from the output. */ | |
3037 | o->flags |= SEC_EXCLUDE; | |
3038 | ||
3039 | if (info->print_gc_sections && o->size != 0) | |
695344c0 | 3040 | /* xgettext: c-format */ |
59d08d6c | 3041 | _bfd_error_handler (_("removing unused section '%pA' in file '%pB'"), |
dae82561 | 3042 | o, sub); |
0f088b2a KT |
3043 | |
3044 | #if 0 | |
3045 | /* But we also have to update some of the relocation | |
3046 | info we collected before. */ | |
3047 | if (gc_sweep_hook | |
3048 | && (o->flags & SEC_RELOC) != 0 | |
3049 | && o->reloc_count > 0 | |
3050 | && !bfd_is_abs_section (o->output_section)) | |
3051 | { | |
3052 | struct internal_reloc *internal_relocs; | |
3053 | bfd_boolean r; | |
3054 | ||
3055 | internal_relocs | |
3056 | = _bfd_coff_link_read_relocs (o->owner, o, NULL, NULL, | |
3057 | info->keep_memory); | |
3058 | if (internal_relocs == NULL) | |
3059 | return FALSE; | |
3060 | ||
3061 | r = (*gc_sweep_hook) (o->owner, info, o, internal_relocs); | |
3062 | ||
3063 | if (coff_section_data (o)->relocs != internal_relocs) | |
3064 | free (internal_relocs); | |
3065 | ||
3066 | if (!r) | |
3067 | return FALSE; | |
3068 | } | |
3069 | #endif | |
3070 | } | |
3071 | } | |
3072 | ||
3073 | /* Remove the symbols that were in the swept sections from the dynamic | |
3074 | symbol table. */ | |
3075 | coff_link_hash_traverse (coff_hash_table (info), coff_gc_sweep_symbol, | |
3076 | NULL); | |
3077 | ||
3078 | return TRUE; | |
3079 | } | |
3080 | ||
3081 | /* Keep all sections containing symbols undefined on the command-line, | |
3082 | and the section containing the entry symbol. */ | |
3083 | ||
3084 | static void | |
3085 | _bfd_coff_gc_keep (struct bfd_link_info *info) | |
3086 | { | |
3087 | struct bfd_sym_chain *sym; | |
3088 | ||
3089 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) | |
3090 | { | |
3091 | struct coff_link_hash_entry *h; | |
3092 | ||
3093 | h = coff_link_hash_lookup (coff_hash_table (info), sym->name, | |
3094 | FALSE, FALSE, FALSE); | |
3095 | ||
3096 | if (h != NULL | |
3097 | && (h->root.type == bfd_link_hash_defined | |
3098 | || h->root.type == bfd_link_hash_defweak) | |
3099 | && !bfd_is_abs_section (h->root.u.def.section)) | |
3100 | h->root.u.def.section->flags |= SEC_KEEP; | |
3101 | } | |
3102 | } | |
3103 | ||
3104 | /* Do mark and sweep of unused sections. */ | |
3105 | ||
3106 | bfd_boolean | |
3107 | bfd_coff_gc_sections (bfd *abfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) | |
3108 | { | |
3109 | bfd *sub; | |
3110 | ||
3111 | /* FIXME: Should we implement this? */ | |
3112 | #if 0 | |
3113 | const bfd_coff_backend_data *bed = coff_backend_info (abfd); | |
3114 | ||
3115 | if (!bed->can_gc_sections | |
3116 | || !is_coff_hash_table (info->hash)) | |
3117 | { | |
59d08d6c | 3118 | _bfd_error_handler(_("warning: gc-sections option ignored")); |
0f088b2a KT |
3119 | return TRUE; |
3120 | } | |
3121 | #endif | |
3122 | ||
3123 | _bfd_coff_gc_keep (info); | |
3124 | ||
3125 | /* Grovel through relocs to find out who stays ... */ | |
3126 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) | |
3127 | { | |
3128 | asection *o; | |
3129 | ||
3130 | if (bfd_get_flavour (sub) != bfd_target_coff_flavour) | |
07d6d2b8 | 3131 | continue; |
0f088b2a KT |
3132 | |
3133 | for (o = sub->sections; o != NULL; o = o->next) | |
07d6d2b8 | 3134 | { |
0f088b2a KT |
3135 | if (((o->flags & (SEC_EXCLUDE | SEC_KEEP)) == SEC_KEEP |
3136 | || CONST_STRNEQ (o->name, ".vectors") | |
3137 | || CONST_STRNEQ (o->name, ".ctors") | |
3138 | || CONST_STRNEQ (o->name, ".dtors")) | |
3139 | && !o->gc_mark) | |
3140 | { | |
3141 | if (!_bfd_coff_gc_mark (info, o, _bfd_coff_gc_mark_hook)) | |
3142 | return FALSE; | |
3143 | } | |
07d6d2b8 | 3144 | } |
0f088b2a KT |
3145 | } |
3146 | ||
3147 | /* Allow the backend to mark additional target specific sections. */ | |
3148 | _bfd_coff_gc_mark_extra_sections (info, _bfd_coff_gc_mark_hook); | |
3149 | ||
3150 | /* ... and mark SEC_EXCLUDE for those that go. */ | |
3151 | return coff_gc_sweep (abfd, info); | |
3152 | } | |
cb7f4b29 AM |
3153 | |
3154 | /* Return name used to identify a comdat group. */ | |
3155 | ||
3156 | const char * | |
3157 | bfd_coff_group_name (bfd *abfd, const asection *sec) | |
3158 | { | |
3159 | struct coff_comdat_info *ci = bfd_coff_get_comdat_section (abfd, sec); | |
3160 | if (ci != NULL) | |
3161 | return ci->name; | |
3162 | return NULL; | |
3163 | } |