Commit | Line | Data |
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252b5132 | 1 | /* Support for the generic parts of COFF, for BFD. |
b3adc24a | 2 | Copyright (C) 1990-2020 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 | ||
991fb595 AM |
305 | obj_coff_keep_syms (abfd) = FALSE; |
306 | obj_coff_keep_strings (abfd) = FALSE; | |
307 | _bfd_coff_free_symbols (abfd); | |
252b5132 RH |
308 | return abfd->xvec; |
309 | ||
310 | fail: | |
37d5ab19 AM |
311 | obj_coff_keep_syms (abfd) = FALSE; |
312 | obj_coff_keep_strings (abfd) = FALSE; | |
313 | _bfd_coff_free_symbols (abfd); | |
252b5132 | 314 | bfd_release (abfd, tdata); |
487e54f2 AM |
315 | fail2: |
316 | abfd->tdata.any = tdata_save; | |
252b5132 | 317 | abfd->flags = oflags; |
ed48ec2e | 318 | abfd->start_address = ostart; |
252b5132 RH |
319 | return (const bfd_target *) NULL; |
320 | } | |
321 | ||
322 | /* Turn a COFF file into a BFD, but fail with bfd_error_wrong_format if it is | |
323 | not a COFF file. This is also used by ECOFF. */ | |
324 | ||
325 | const bfd_target * | |
c8e7bf0d | 326 | coff_object_p (bfd *abfd) |
252b5132 | 327 | { |
dc810e39 AM |
328 | bfd_size_type filhsz; |
329 | bfd_size_type aoutsz; | |
330 | unsigned int nscns; | |
c8e7bf0d | 331 | void * filehdr; |
252b5132 RH |
332 | struct internal_filehdr internal_f; |
333 | struct internal_aouthdr internal_a; | |
334 | ||
c8e7bf0d | 335 | /* Figure out how much to read. */ |
252b5132 RH |
336 | filhsz = bfd_coff_filhsz (abfd); |
337 | aoutsz = bfd_coff_aoutsz (abfd); | |
338 | ||
339 | filehdr = bfd_alloc (abfd, filhsz); | |
340 | if (filehdr == NULL) | |
487e54f2 | 341 | return NULL; |
dc810e39 | 342 | if (bfd_bread (filehdr, filhsz, abfd) != filhsz) |
252b5132 RH |
343 | { |
344 | if (bfd_get_error () != bfd_error_system_call) | |
345 | bfd_set_error (bfd_error_wrong_format); | |
487e54f2 AM |
346 | bfd_release (abfd, filehdr); |
347 | return NULL; | |
252b5132 RH |
348 | } |
349 | bfd_coff_swap_filehdr_in (abfd, filehdr, &internal_f); | |
350 | bfd_release (abfd, filehdr); | |
351 | ||
b8819ab2 NC |
352 | /* The XCOFF format has two sizes for the f_opthdr. SMALL_AOUTSZ |
353 | (less than aoutsz) used in object files and AOUTSZ (equal to | |
354 | aoutsz) in executables. The bfd_coff_swap_aouthdr_in function | |
355 | expects this header to be aoutsz bytes in length, so we use that | |
356 | value in the call to bfd_alloc below. But we must be careful to | |
357 | only read in f_opthdr bytes in the call to bfd_bread. We should | |
358 | also attempt to catch corrupt or non-COFF binaries with a strange | |
359 | value for f_opthdr. */ | |
82e51918 | 360 | if (! bfd_coff_bad_format_hook (abfd, &internal_f) |
95f7d9f7 | 361 | || internal_f.f_opthdr > aoutsz) |
252b5132 RH |
362 | { |
363 | bfd_set_error (bfd_error_wrong_format); | |
487e54f2 | 364 | return NULL; |
252b5132 RH |
365 | } |
366 | nscns = internal_f.f_nscns; | |
367 | ||
368 | if (internal_f.f_opthdr) | |
369 | { | |
c8e7bf0d | 370 | void * opthdr; |
252b5132 RH |
371 | |
372 | opthdr = bfd_alloc (abfd, aoutsz); | |
373 | if (opthdr == NULL) | |
487e54f2 | 374 | return NULL; |
dc810e39 | 375 | if (bfd_bread (opthdr, (bfd_size_type) internal_f.f_opthdr, abfd) |
252b5132 RH |
376 | != internal_f.f_opthdr) |
377 | { | |
487e54f2 AM |
378 | bfd_release (abfd, opthdr); |
379 | return NULL; | |
252b5132 | 380 | } |
a1165289 NC |
381 | /* PR 17512: file: 11056-1136-0.004. */ |
382 | if (internal_f.f_opthdr < aoutsz) | |
383 | memset (((char *) opthdr) + internal_f.f_opthdr, 0, aoutsz - internal_f.f_opthdr); | |
384 | ||
c8e7bf0d | 385 | bfd_coff_swap_aouthdr_in (abfd, opthdr, (void *) &internal_a); |
487e54f2 | 386 | bfd_release (abfd, opthdr); |
252b5132 RH |
387 | } |
388 | ||
389 | return coff_real_object_p (abfd, nscns, &internal_f, | |
390 | (internal_f.f_opthdr != 0 | |
391 | ? &internal_a | |
392 | : (struct internal_aouthdr *) NULL)); | |
393 | } | |
394 | ||
395 | /* Get the BFD section from a COFF symbol section number. */ | |
396 | ||
397 | asection * | |
91d6fa6a | 398 | coff_section_from_bfd_index (bfd *abfd, int section_index) |
252b5132 | 399 | { |
198beae2 | 400 | struct bfd_section *answer = abfd->sections; |
252b5132 | 401 | |
91d6fa6a | 402 | if (section_index == N_ABS) |
252b5132 | 403 | return bfd_abs_section_ptr; |
91d6fa6a | 404 | if (section_index == N_UNDEF) |
252b5132 | 405 | return bfd_und_section_ptr; |
91d6fa6a | 406 | if (section_index == N_DEBUG) |
252b5132 RH |
407 | return bfd_abs_section_ptr; |
408 | ||
409 | while (answer) | |
410 | { | |
91d6fa6a | 411 | if (answer->target_index == section_index) |
252b5132 RH |
412 | return answer; |
413 | answer = answer->next; | |
414 | } | |
415 | ||
416 | /* We should not reach this point, but the SCO 3.2v4 /lib/libc_s.a | |
417 | has a bad symbol table in biglitpow.o. */ | |
418 | return bfd_und_section_ptr; | |
419 | } | |
420 | ||
421 | /* Get the upper bound of a COFF symbol table. */ | |
422 | ||
423 | long | |
c8e7bf0d | 424 | coff_get_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
425 | { |
426 | if (!bfd_coff_slurp_symbol_table (abfd)) | |
427 | return -1; | |
428 | ||
429 | return (bfd_get_symcount (abfd) + 1) * (sizeof (coff_symbol_type *)); | |
430 | } | |
431 | ||
252b5132 RH |
432 | /* Canonicalize a COFF symbol table. */ |
433 | ||
434 | long | |
c8e7bf0d | 435 | coff_canonicalize_symtab (bfd *abfd, asymbol **alocation) |
252b5132 RH |
436 | { |
437 | unsigned int counter; | |
438 | coff_symbol_type *symbase; | |
439 | coff_symbol_type **location = (coff_symbol_type **) alocation; | |
440 | ||
441 | if (!bfd_coff_slurp_symbol_table (abfd)) | |
442 | return -1; | |
443 | ||
444 | symbase = obj_symbols (abfd); | |
445 | counter = bfd_get_symcount (abfd); | |
446 | while (counter-- > 0) | |
447 | *location++ = symbase++; | |
448 | ||
449 | *location = NULL; | |
450 | ||
451 | return bfd_get_symcount (abfd); | |
452 | } | |
453 | ||
454 | /* Get the name of a symbol. The caller must pass in a buffer of size | |
455 | >= SYMNMLEN + 1. */ | |
456 | ||
457 | const char * | |
c8e7bf0d NC |
458 | _bfd_coff_internal_syment_name (bfd *abfd, |
459 | const struct internal_syment *sym, | |
460 | char *buf) | |
252b5132 RH |
461 | { |
462 | /* FIXME: It's not clear this will work correctly if sizeof | |
463 | (_n_zeroes) != 4. */ | |
464 | if (sym->_n._n_n._n_zeroes != 0 | |
465 | || sym->_n._n_n._n_offset == 0) | |
466 | { | |
467 | memcpy (buf, sym->_n._n_name, SYMNMLEN); | |
468 | buf[SYMNMLEN] = '\0'; | |
469 | return buf; | |
470 | } | |
471 | else | |
472 | { | |
473 | const char *strings; | |
474 | ||
475 | BFD_ASSERT (sym->_n._n_n._n_offset >= STRING_SIZE_SIZE); | |
476 | strings = obj_coff_strings (abfd); | |
477 | if (strings == NULL) | |
478 | { | |
479 | strings = _bfd_coff_read_string_table (abfd); | |
480 | if (strings == NULL) | |
481 | return NULL; | |
482 | } | |
cdb602b1 NC |
483 | /* PR 17910: Only check for string overflow if the length has been set. |
484 | Some DLLs, eg those produced by Visual Studio, may not set the length field. */ | |
485 | if (obj_coff_strings_len (abfd) > 0 | |
486 | && sym->_n._n_n._n_offset >= obj_coff_strings_len (abfd)) | |
5a3f568b | 487 | return NULL; |
252b5132 RH |
488 | return strings + sym->_n._n_n._n_offset; |
489 | } | |
490 | } | |
491 | ||
492 | /* Read in and swap the relocs. This returns a buffer holding the | |
b34976b6 | 493 | relocs for section SEC in file ABFD. If CACHE is TRUE and |
252b5132 RH |
494 | INTERNAL_RELOCS is NULL, the relocs read in will be saved in case |
495 | the function is called again. If EXTERNAL_RELOCS is not NULL, it | |
496 | is a buffer large enough to hold the unswapped relocs. If | |
497 | INTERNAL_RELOCS is not NULL, it is a buffer large enough to hold | |
b34976b6 | 498 | the swapped relocs. If REQUIRE_INTERNAL is TRUE, then the return |
252b5132 RH |
499 | value must be INTERNAL_RELOCS. The function returns NULL on error. */ |
500 | ||
501 | struct internal_reloc * | |
c8e7bf0d NC |
502 | _bfd_coff_read_internal_relocs (bfd *abfd, |
503 | asection *sec, | |
504 | bfd_boolean cache, | |
505 | bfd_byte *external_relocs, | |
506 | bfd_boolean require_internal, | |
507 | struct internal_reloc *internal_relocs) | |
252b5132 RH |
508 | { |
509 | bfd_size_type relsz; | |
510 | bfd_byte *free_external = NULL; | |
511 | struct internal_reloc *free_internal = NULL; | |
512 | bfd_byte *erel; | |
513 | bfd_byte *erel_end; | |
514 | struct internal_reloc *irel; | |
dc810e39 | 515 | bfd_size_type amt; |
252b5132 | 516 | |
9d7038d3 MS |
517 | if (sec->reloc_count == 0) |
518 | return internal_relocs; /* Nothing to do. */ | |
519 | ||
252b5132 RH |
520 | if (coff_section_data (abfd, sec) != NULL |
521 | && coff_section_data (abfd, sec)->relocs != NULL) | |
522 | { | |
523 | if (! require_internal) | |
524 | return coff_section_data (abfd, sec)->relocs; | |
525 | memcpy (internal_relocs, coff_section_data (abfd, sec)->relocs, | |
526 | sec->reloc_count * sizeof (struct internal_reloc)); | |
527 | return internal_relocs; | |
528 | } | |
529 | ||
530 | relsz = bfd_coff_relsz (abfd); | |
531 | ||
dc810e39 | 532 | amt = sec->reloc_count * relsz; |
252b5132 RH |
533 | if (external_relocs == NULL) |
534 | { | |
a50b1753 | 535 | free_external = (bfd_byte *) bfd_malloc (amt); |
9d7038d3 | 536 | if (free_external == NULL) |
252b5132 RH |
537 | goto error_return; |
538 | external_relocs = free_external; | |
539 | } | |
540 | ||
541 | if (bfd_seek (abfd, sec->rel_filepos, SEEK_SET) != 0 | |
dc810e39 | 542 | || bfd_bread (external_relocs, amt, abfd) != amt) |
252b5132 RH |
543 | goto error_return; |
544 | ||
545 | if (internal_relocs == NULL) | |
546 | { | |
dc810e39 AM |
547 | amt = sec->reloc_count; |
548 | amt *= sizeof (struct internal_reloc); | |
a50b1753 | 549 | free_internal = (struct internal_reloc *) bfd_malloc (amt); |
9d7038d3 | 550 | if (free_internal == NULL) |
252b5132 RH |
551 | goto error_return; |
552 | internal_relocs = free_internal; | |
553 | } | |
554 | ||
555 | /* Swap in the relocs. */ | |
556 | erel = external_relocs; | |
557 | erel_end = erel + relsz * sec->reloc_count; | |
558 | irel = internal_relocs; | |
559 | for (; erel < erel_end; erel += relsz, irel++) | |
c8e7bf0d | 560 | bfd_coff_swap_reloc_in (abfd, (void *) erel, (void *) irel); |
252b5132 RH |
561 | |
562 | if (free_external != NULL) | |
563 | { | |
564 | free (free_external); | |
565 | free_external = NULL; | |
566 | } | |
567 | ||
9ee2139f | 568 | if (cache && free_internal != NULL) |
252b5132 | 569 | { |
9ee2139f | 570 | if (coff_section_data (abfd, sec) == NULL) |
252b5132 | 571 | { |
9ee2139f MS |
572 | amt = sizeof (struct coff_section_tdata); |
573 | sec->used_by_bfd = bfd_zalloc (abfd, amt); | |
574 | if (sec->used_by_bfd == NULL) | |
575 | goto error_return; | |
576 | coff_section_data (abfd, sec)->contents = NULL; | |
252b5132 | 577 | } |
9ee2139f | 578 | coff_section_data (abfd, sec)->relocs = free_internal; |
252b5132 RH |
579 | } |
580 | ||
581 | return internal_relocs; | |
582 | ||
583 | error_return: | |
584 | if (free_external != NULL) | |
585 | free (free_external); | |
586 | if (free_internal != NULL) | |
587 | free (free_internal); | |
588 | return NULL; | |
589 | } | |
590 | ||
591 | /* Set lineno_count for the output sections of a COFF file. */ | |
592 | ||
593 | int | |
c8e7bf0d | 594 | coff_count_linenumbers (bfd *abfd) |
252b5132 RH |
595 | { |
596 | unsigned int limit = bfd_get_symcount (abfd); | |
597 | unsigned int i; | |
598 | int total = 0; | |
599 | asymbol **p; | |
600 | asection *s; | |
601 | ||
602 | if (limit == 0) | |
603 | { | |
604 | /* This may be from the backend linker, in which case the | |
07d6d2b8 | 605 | lineno_count in the sections is correct. */ |
252b5132 RH |
606 | for (s = abfd->sections; s != NULL; s = s->next) |
607 | total += s->lineno_count; | |
608 | return total; | |
609 | } | |
610 | ||
611 | for (s = abfd->sections; s != NULL; s = s->next) | |
612 | BFD_ASSERT (s->lineno_count == 0); | |
613 | ||
614 | for (p = abfd->outsymbols, i = 0; i < limit; i++, p++) | |
615 | { | |
616 | asymbol *q_maybe = *p; | |
617 | ||
9bd09e22 | 618 | if (bfd_family_coff (bfd_asymbol_bfd (q_maybe))) |
252b5132 RH |
619 | { |
620 | coff_symbol_type *q = coffsymbol (q_maybe); | |
621 | ||
622 | /* The AIX 4.1 compiler can sometimes generate line numbers | |
07d6d2b8 AM |
623 | attached to debugging symbols. We try to simply ignore |
624 | those here. */ | |
252b5132 RH |
625 | if (q->lineno != NULL |
626 | && q->symbol.section->owner != NULL) | |
627 | { | |
628 | /* This symbol has line numbers. Increment the owning | |
07d6d2b8 | 629 | section's linenumber count. */ |
252b5132 RH |
630 | alent *l = q->lineno; |
631 | ||
84c254c6 | 632 | do |
252b5132 | 633 | { |
84c254c6 | 634 | asection * sec = q->symbol.section->output_section; |
b34976b6 | 635 | |
84c254c6 NC |
636 | /* Do not try to update fields in read-only sections. */ |
637 | if (! bfd_is_const_section (sec)) | |
638 | sec->lineno_count ++; | |
639 | ||
252b5132 | 640 | ++total; |
252b5132 RH |
641 | ++l; |
642 | } | |
84c254c6 | 643 | while (l->line_number != 0); |
252b5132 RH |
644 | } |
645 | } | |
646 | } | |
647 | ||
648 | return total; | |
649 | } | |
650 | ||
252b5132 | 651 | static void |
c8e7bf0d NC |
652 | fixup_symbol_value (bfd *abfd, |
653 | coff_symbol_type *coff_symbol_ptr, | |
654 | struct internal_syment *syment) | |
252b5132 | 655 | { |
c8e7bf0d | 656 | /* Normalize the symbol flags. */ |
68ffbac6 | 657 | if (coff_symbol_ptr->symbol.section |
ac38308c | 658 | && bfd_is_com_section (coff_symbol_ptr->symbol.section)) |
252b5132 | 659 | { |
c8e7bf0d | 660 | /* A common symbol is undefined with a value. */ |
252b5132 RH |
661 | syment->n_scnum = N_UNDEF; |
662 | syment->n_value = coff_symbol_ptr->symbol.value; | |
663 | } | |
703153b5 ILT |
664 | else if ((coff_symbol_ptr->symbol.flags & BSF_DEBUGGING) != 0 |
665 | && (coff_symbol_ptr->symbol.flags & BSF_DEBUGGING_RELOC) == 0) | |
252b5132 RH |
666 | { |
667 | syment->n_value = coff_symbol_ptr->symbol.value; | |
668 | } | |
669 | else if (bfd_is_und_section (coff_symbol_ptr->symbol.section)) | |
670 | { | |
671 | syment->n_scnum = N_UNDEF; | |
672 | syment->n_value = 0; | |
673 | } | |
7bb9db4d | 674 | /* FIXME: Do we need to handle the absolute section here? */ |
252b5132 RH |
675 | else |
676 | { | |
677 | if (coff_symbol_ptr->symbol.section) | |
678 | { | |
679 | syment->n_scnum = | |
680 | coff_symbol_ptr->symbol.section->output_section->target_index; | |
681 | ||
682 | syment->n_value = (coff_symbol_ptr->symbol.value | |
683 | + coff_symbol_ptr->symbol.section->output_offset); | |
684 | if (! obj_pe (abfd)) | |
07d6d2b8 AM |
685 | { |
686 | syment->n_value += (syment->n_sclass == C_STATLAB) | |
687 | ? coff_symbol_ptr->symbol.section->output_section->lma | |
688 | : coff_symbol_ptr->symbol.section->output_section->vma; | |
689 | } | |
252b5132 RH |
690 | } |
691 | else | |
692 | { | |
693 | BFD_ASSERT (0); | |
694 | /* This can happen, but I don't know why yet (steve@cygnus.com) */ | |
695 | syment->n_scnum = N_ABS; | |
696 | syment->n_value = coff_symbol_ptr->symbol.value; | |
697 | } | |
698 | } | |
699 | } | |
700 | ||
701 | /* Run through all the symbols in the symbol table and work out what | |
702 | their indexes into the symbol table will be when output. | |
703 | ||
704 | Coff requires that each C_FILE symbol points to the next one in the | |
705 | chain, and that the last one points to the first external symbol. We | |
706 | do that here too. */ | |
707 | ||
b34976b6 | 708 | bfd_boolean |
c8e7bf0d | 709 | coff_renumber_symbols (bfd *bfd_ptr, int *first_undef) |
252b5132 RH |
710 | { |
711 | unsigned int symbol_count = bfd_get_symcount (bfd_ptr); | |
712 | asymbol **symbol_ptr_ptr = bfd_ptr->outsymbols; | |
713 | unsigned int native_index = 0; | |
c8e7bf0d | 714 | struct internal_syment *last_file = NULL; |
252b5132 RH |
715 | unsigned int symbol_index; |
716 | ||
717 | /* COFF demands that undefined symbols come after all other symbols. | |
718 | Since we don't need to impose this extra knowledge on all our | |
719 | client programs, deal with that here. Sort the symbol table; | |
720 | just move the undefined symbols to the end, leaving the rest | |
721 | alone. The O'Reilly book says that defined global symbols come | |
722 | at the end before the undefined symbols, so we do that here as | |
723 | well. */ | |
724 | /* @@ Do we have some condition we could test for, so we don't always | |
725 | have to do this? I don't think relocatability is quite right, but | |
726 | I'm not certain. [raeburn:19920508.1711EST] */ | |
727 | { | |
728 | asymbol **newsyms; | |
729 | unsigned int i; | |
dc810e39 | 730 | bfd_size_type amt; |
252b5132 | 731 | |
dc810e39 | 732 | amt = sizeof (asymbol *) * ((bfd_size_type) symbol_count + 1); |
a50b1753 | 733 | newsyms = (asymbol **) bfd_alloc (bfd_ptr, amt); |
252b5132 | 734 | if (!newsyms) |
b34976b6 | 735 | return FALSE; |
252b5132 RH |
736 | bfd_ptr->outsymbols = newsyms; |
737 | for (i = 0; i < symbol_count; i++) | |
738 | if ((symbol_ptr_ptr[i]->flags & BSF_NOT_AT_END) != 0 | |
739 | || (!bfd_is_und_section (symbol_ptr_ptr[i]->section) | |
740 | && !bfd_is_com_section (symbol_ptr_ptr[i]->section) | |
741 | && ((symbol_ptr_ptr[i]->flags & BSF_FUNCTION) != 0 | |
742 | || ((symbol_ptr_ptr[i]->flags & (BSF_GLOBAL | BSF_WEAK)) | |
743 | == 0)))) | |
744 | *newsyms++ = symbol_ptr_ptr[i]; | |
745 | ||
746 | for (i = 0; i < symbol_count; i++) | |
747 | if ((symbol_ptr_ptr[i]->flags & BSF_NOT_AT_END) == 0 | |
748 | && !bfd_is_und_section (symbol_ptr_ptr[i]->section) | |
749 | && (bfd_is_com_section (symbol_ptr_ptr[i]->section) | |
750 | || ((symbol_ptr_ptr[i]->flags & BSF_FUNCTION) == 0 | |
751 | && ((symbol_ptr_ptr[i]->flags & (BSF_GLOBAL | BSF_WEAK)) | |
752 | != 0)))) | |
753 | *newsyms++ = symbol_ptr_ptr[i]; | |
754 | ||
755 | *first_undef = newsyms - bfd_ptr->outsymbols; | |
756 | ||
757 | for (i = 0; i < symbol_count; i++) | |
758 | if ((symbol_ptr_ptr[i]->flags & BSF_NOT_AT_END) == 0 | |
759 | && bfd_is_und_section (symbol_ptr_ptr[i]->section)) | |
760 | *newsyms++ = symbol_ptr_ptr[i]; | |
761 | *newsyms = (asymbol *) NULL; | |
762 | symbol_ptr_ptr = bfd_ptr->outsymbols; | |
763 | } | |
764 | ||
765 | for (symbol_index = 0; symbol_index < symbol_count; symbol_index++) | |
766 | { | |
f4943d82 | 767 | coff_symbol_type *coff_symbol_ptr; |
a5c71af8 | 768 | |
f4943d82 | 769 | coff_symbol_ptr = coff_symbol_from (symbol_ptr_ptr[symbol_index]); |
244148ad | 770 | symbol_ptr_ptr[symbol_index]->udata.i = symbol_index; |
252b5132 RH |
771 | if (coff_symbol_ptr && coff_symbol_ptr->native) |
772 | { | |
773 | combined_entry_type *s = coff_symbol_ptr->native; | |
774 | int i; | |
775 | ||
a5c71af8 | 776 | BFD_ASSERT (s->is_sym); |
252b5132 RH |
777 | if (s->u.syment.n_sclass == C_FILE) |
778 | { | |
c8e7bf0d | 779 | if (last_file != NULL) |
252b5132 RH |
780 | last_file->n_value = native_index; |
781 | last_file = &(s->u.syment); | |
782 | } | |
783 | else | |
c8e7bf0d NC |
784 | /* Modify the symbol values according to their section and |
785 | type. */ | |
786 | fixup_symbol_value (bfd_ptr, coff_symbol_ptr, &(s->u.syment)); | |
252b5132 | 787 | |
252b5132 RH |
788 | for (i = 0; i < s->u.syment.n_numaux + 1; i++) |
789 | s[i].offset = native_index++; | |
790 | } | |
791 | else | |
c8e7bf0d | 792 | native_index++; |
252b5132 | 793 | } |
c8e7bf0d | 794 | |
252b5132 RH |
795 | obj_conv_table_size (bfd_ptr) = native_index; |
796 | ||
b34976b6 | 797 | return TRUE; |
252b5132 RH |
798 | } |
799 | ||
800 | /* Run thorough the symbol table again, and fix it so that all | |
801 | pointers to entries are changed to the entries' index in the output | |
802 | symbol table. */ | |
803 | ||
804 | void | |
c8e7bf0d | 805 | coff_mangle_symbols (bfd *bfd_ptr) |
252b5132 RH |
806 | { |
807 | unsigned int symbol_count = bfd_get_symcount (bfd_ptr); | |
808 | asymbol **symbol_ptr_ptr = bfd_ptr->outsymbols; | |
809 | unsigned int symbol_index; | |
810 | ||
811 | for (symbol_index = 0; symbol_index < symbol_count; symbol_index++) | |
812 | { | |
f4943d82 | 813 | coff_symbol_type *coff_symbol_ptr; |
252b5132 | 814 | |
f4943d82 | 815 | coff_symbol_ptr = coff_symbol_from (symbol_ptr_ptr[symbol_index]); |
252b5132 RH |
816 | if (coff_symbol_ptr && coff_symbol_ptr->native) |
817 | { | |
818 | int i; | |
819 | combined_entry_type *s = coff_symbol_ptr->native; | |
820 | ||
a5c71af8 | 821 | BFD_ASSERT (s->is_sym); |
252b5132 RH |
822 | if (s->fix_value) |
823 | { | |
824 | /* FIXME: We should use a union here. */ | |
dc810e39 | 825 | s->u.syment.n_value = |
d2df793a NC |
826 | (bfd_hostptr_t) ((combined_entry_type *) |
827 | ((bfd_hostptr_t) s->u.syment.n_value))->offset; | |
252b5132 RH |
828 | s->fix_value = 0; |
829 | } | |
830 | if (s->fix_line) | |
831 | { | |
832 | /* The value is the offset into the line number entries | |
07d6d2b8 AM |
833 | for the symbol's section. On output, the symbol's |
834 | section should be N_DEBUG. */ | |
252b5132 RH |
835 | s->u.syment.n_value = |
836 | (coff_symbol_ptr->symbol.section->output_section->line_filepos | |
837 | + s->u.syment.n_value * bfd_coff_linesz (bfd_ptr)); | |
838 | coff_symbol_ptr->symbol.section = | |
839 | coff_section_from_bfd_index (bfd_ptr, N_DEBUG); | |
840 | BFD_ASSERT (coff_symbol_ptr->symbol.flags & BSF_DEBUGGING); | |
841 | } | |
842 | for (i = 0; i < s->u.syment.n_numaux; i++) | |
843 | { | |
844 | combined_entry_type *a = s + i + 1; | |
4b24dd1a | 845 | |
a5c71af8 | 846 | BFD_ASSERT (! a->is_sym); |
252b5132 RH |
847 | if (a->fix_tag) |
848 | { | |
849 | a->u.auxent.x_sym.x_tagndx.l = | |
850 | a->u.auxent.x_sym.x_tagndx.p->offset; | |
851 | a->fix_tag = 0; | |
852 | } | |
853 | if (a->fix_end) | |
854 | { | |
855 | a->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l = | |
856 | a->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p->offset; | |
857 | a->fix_end = 0; | |
858 | } | |
859 | if (a->fix_scnlen) | |
860 | { | |
861 | a->u.auxent.x_csect.x_scnlen.l = | |
862 | a->u.auxent.x_csect.x_scnlen.p->offset; | |
863 | a->fix_scnlen = 0; | |
864 | } | |
865 | } | |
866 | } | |
867 | } | |
868 | } | |
869 | ||
870 | static void | |
c8e7bf0d NC |
871 | coff_fix_symbol_name (bfd *abfd, |
872 | asymbol *symbol, | |
873 | combined_entry_type *native, | |
874 | bfd_size_type *string_size_p, | |
875 | asection **debug_string_section_p, | |
876 | bfd_size_type *debug_string_size_p) | |
252b5132 RH |
877 | { |
878 | unsigned int name_length; | |
879 | union internal_auxent *auxent; | |
880 | char *name = (char *) (symbol->name); | |
881 | ||
c8e7bf0d | 882 | if (name == NULL) |
252b5132 | 883 | { |
c8e7bf0d | 884 | /* COFF symbols always have names, so we'll make one up. */ |
252b5132 RH |
885 | symbol->name = "strange"; |
886 | name = (char *) symbol->name; | |
887 | } | |
888 | name_length = strlen (name); | |
889 | ||
a5c71af8 | 890 | BFD_ASSERT (native->is_sym); |
252b5132 RH |
891 | if (native->u.syment.n_sclass == C_FILE |
892 | && native->u.syment.n_numaux > 0) | |
893 | { | |
692b7d62 ILT |
894 | unsigned int filnmlen; |
895 | ||
7f6d05e8 CP |
896 | if (bfd_coff_force_symnames_in_strings (abfd)) |
897 | { | |
07d6d2b8 | 898 | native->u.syment._n._n_n._n_offset = |
7f6d05e8 CP |
899 | (*string_size_p + STRING_SIZE_SIZE); |
900 | native->u.syment._n._n_n._n_zeroes = 0; | |
901 | *string_size_p += 6; /* strlen(".file") + 1 */ | |
902 | } | |
903 | else | |
07d6d2b8 | 904 | strncpy (native->u.syment._n._n_name, ".file", SYMNMLEN); |
7f6d05e8 | 905 | |
a5c71af8 | 906 | BFD_ASSERT (! (native + 1)->is_sym); |
252b5132 RH |
907 | auxent = &(native + 1)->u.auxent; |
908 | ||
692b7d62 ILT |
909 | filnmlen = bfd_coff_filnmlen (abfd); |
910 | ||
252b5132 RH |
911 | if (bfd_coff_long_filenames (abfd)) |
912 | { | |
692b7d62 | 913 | if (name_length <= filnmlen) |
c8e7bf0d | 914 | strncpy (auxent->x_file.x_fname, name, filnmlen); |
252b5132 RH |
915 | else |
916 | { | |
917 | auxent->x_file.x_n.x_offset = *string_size_p + STRING_SIZE_SIZE; | |
918 | auxent->x_file.x_n.x_zeroes = 0; | |
919 | *string_size_p += name_length + 1; | |
920 | } | |
921 | } | |
922 | else | |
923 | { | |
692b7d62 ILT |
924 | strncpy (auxent->x_file.x_fname, name, filnmlen); |
925 | if (name_length > filnmlen) | |
926 | name[filnmlen] = '\0'; | |
252b5132 RH |
927 | } |
928 | } | |
929 | else | |
930 | { | |
7f6d05e8 | 931 | if (name_length <= SYMNMLEN && !bfd_coff_force_symnames_in_strings (abfd)) |
c8e7bf0d NC |
932 | /* This name will fit into the symbol neatly. */ |
933 | strncpy (native->u.syment._n._n_name, symbol->name, SYMNMLEN); | |
934 | ||
252b5132 RH |
935 | else if (!bfd_coff_symname_in_debug (abfd, &native->u.syment)) |
936 | { | |
937 | native->u.syment._n._n_n._n_offset = (*string_size_p | |
938 | + STRING_SIZE_SIZE); | |
939 | native->u.syment._n._n_n._n_zeroes = 0; | |
940 | *string_size_p += name_length + 1; | |
941 | } | |
942 | else | |
943 | { | |
dc810e39 | 944 | file_ptr filepos; |
7f6d05e8 CP |
945 | bfd_byte buf[4]; |
946 | int prefix_len = bfd_coff_debug_string_prefix_length (abfd); | |
252b5132 RH |
947 | |
948 | /* This name should be written into the .debug section. For | |
949 | some reason each name is preceded by a two byte length | |
950 | and also followed by a null byte. FIXME: We assume that | |
951 | the .debug section has already been created, and that it | |
952 | is large enough. */ | |
953 | if (*debug_string_section_p == (asection *) NULL) | |
954 | *debug_string_section_p = bfd_get_section_by_name (abfd, ".debug"); | |
955 | filepos = bfd_tell (abfd); | |
7f6d05e8 | 956 | if (prefix_len == 4) |
dc810e39 | 957 | bfd_put_32 (abfd, (bfd_vma) (name_length + 1), buf); |
7f6d05e8 | 958 | else |
dc810e39 | 959 | bfd_put_16 (abfd, (bfd_vma) (name_length + 1), buf); |
7f6d05e8 | 960 | |
252b5132 RH |
961 | if (!bfd_set_section_contents (abfd, |
962 | *debug_string_section_p, | |
c8e7bf0d | 963 | (void *) buf, |
252b5132 | 964 | (file_ptr) *debug_string_size_p, |
7f6d05e8 | 965 | (bfd_size_type) prefix_len) |
252b5132 RH |
966 | || !bfd_set_section_contents (abfd, |
967 | *debug_string_section_p, | |
c8e7bf0d | 968 | (void *) symbol->name, |
dc810e39 AM |
969 | (file_ptr) (*debug_string_size_p |
970 | + prefix_len), | |
252b5132 RH |
971 | (bfd_size_type) name_length + 1)) |
972 | abort (); | |
973 | if (bfd_seek (abfd, filepos, SEEK_SET) != 0) | |
974 | abort (); | |
244148ad | 975 | native->u.syment._n._n_n._n_offset = |
7f6d05e8 | 976 | *debug_string_size_p + prefix_len; |
252b5132 | 977 | native->u.syment._n._n_n._n_zeroes = 0; |
7f6d05e8 | 978 | *debug_string_size_p += name_length + 1 + prefix_len; |
252b5132 RH |
979 | } |
980 | } | |
981 | } | |
982 | ||
983 | /* We need to keep track of the symbol index so that when we write out | |
984 | the relocs we can get the index for a symbol. This method is a | |
985 | hack. FIXME. */ | |
986 | ||
987 | #define set_index(symbol, idx) ((symbol)->udata.i = (idx)) | |
988 | ||
989 | /* Write a symbol out to a COFF file. */ | |
990 | ||
b34976b6 | 991 | static bfd_boolean |
c8e7bf0d NC |
992 | coff_write_symbol (bfd *abfd, |
993 | asymbol *symbol, | |
994 | combined_entry_type *native, | |
995 | bfd_vma *written, | |
996 | bfd_size_type *string_size_p, | |
997 | asection **debug_string_section_p, | |
998 | bfd_size_type *debug_string_size_p) | |
252b5132 RH |
999 | { |
1000 | unsigned int numaux = native->u.syment.n_numaux; | |
1001 | int type = native->u.syment.n_type; | |
a50b1753 | 1002 | int n_sclass = (int) native->u.syment.n_sclass; |
88e59394 DK |
1003 | asection *output_section = symbol->section->output_section |
1004 | ? symbol->section->output_section | |
1005 | : symbol->section; | |
c8e7bf0d | 1006 | void * buf; |
252b5132 RH |
1007 | bfd_size_type symesz; |
1008 | ||
a5c71af8 NC |
1009 | BFD_ASSERT (native->is_sym); |
1010 | ||
252b5132 RH |
1011 | if (native->u.syment.n_sclass == C_FILE) |
1012 | symbol->flags |= BSF_DEBUGGING; | |
1013 | ||
1014 | if (symbol->flags & BSF_DEBUGGING | |
1015 | && bfd_is_abs_section (symbol->section)) | |
c8e7bf0d NC |
1016 | native->u.syment.n_scnum = N_DEBUG; |
1017 | ||
252b5132 | 1018 | else if (bfd_is_abs_section (symbol->section)) |
c8e7bf0d NC |
1019 | native->u.syment.n_scnum = N_ABS; |
1020 | ||
252b5132 | 1021 | else if (bfd_is_und_section (symbol->section)) |
c8e7bf0d NC |
1022 | native->u.syment.n_scnum = N_UNDEF; |
1023 | ||
252b5132 | 1024 | else |
c8e7bf0d | 1025 | native->u.syment.n_scnum = |
88e59394 | 1026 | output_section->target_index; |
252b5132 RH |
1027 | |
1028 | coff_fix_symbol_name (abfd, symbol, native, string_size_p, | |
1029 | debug_string_section_p, debug_string_size_p); | |
1030 | ||
1031 | symesz = bfd_coff_symesz (abfd); | |
1032 | buf = bfd_alloc (abfd, symesz); | |
1033 | if (!buf) | |
b34976b6 | 1034 | return FALSE; |
252b5132 | 1035 | bfd_coff_swap_sym_out (abfd, &native->u.syment, buf); |
dc810e39 | 1036 | if (bfd_bwrite (buf, symesz, abfd) != symesz) |
b34976b6 | 1037 | return FALSE; |
252b5132 RH |
1038 | bfd_release (abfd, buf); |
1039 | ||
1040 | if (native->u.syment.n_numaux > 0) | |
1041 | { | |
1042 | bfd_size_type auxesz; | |
1043 | unsigned int j; | |
1044 | ||
1045 | auxesz = bfd_coff_auxesz (abfd); | |
1046 | buf = bfd_alloc (abfd, auxesz); | |
1047 | if (!buf) | |
b34976b6 | 1048 | return FALSE; |
252b5132 RH |
1049 | for (j = 0; j < native->u.syment.n_numaux; j++) |
1050 | { | |
a5c71af8 | 1051 | BFD_ASSERT (! (native + j + 1)->is_sym); |
252b5132 RH |
1052 | bfd_coff_swap_aux_out (abfd, |
1053 | &((native + j + 1)->u.auxent), | |
96d56e9f | 1054 | type, n_sclass, (int) j, |
252b5132 RH |
1055 | native->u.syment.n_numaux, |
1056 | buf); | |
dc810e39 | 1057 | if (bfd_bwrite (buf, auxesz, abfd) != auxesz) |
b34976b6 | 1058 | return FALSE; |
252b5132 RH |
1059 | } |
1060 | bfd_release (abfd, buf); | |
1061 | } | |
1062 | ||
1063 | /* Store the index for use when we write out the relocs. */ | |
1064 | set_index (symbol, *written); | |
1065 | ||
1066 | *written += numaux + 1; | |
b34976b6 | 1067 | return TRUE; |
252b5132 RH |
1068 | } |
1069 | ||
1070 | /* Write out a symbol to a COFF file that does not come from a COFF | |
1071 | file originally. This symbol may have been created by the linker, | |
1072 | or we may be linking a non COFF file to a COFF file. */ | |
1073 | ||
e7ebb214 | 1074 | bfd_boolean |
c8e7bf0d NC |
1075 | coff_write_alien_symbol (bfd *abfd, |
1076 | asymbol *symbol, | |
e7ebb214 | 1077 | struct internal_syment *isym, |
270f8245 | 1078 | union internal_auxent *iaux, |
c8e7bf0d NC |
1079 | bfd_vma *written, |
1080 | bfd_size_type *string_size_p, | |
1081 | asection **debug_string_section_p, | |
1082 | bfd_size_type *debug_string_size_p) | |
252b5132 RH |
1083 | { |
1084 | combined_entry_type *native; | |
e7ebb214 | 1085 | combined_entry_type dummy[2]; |
88e59394 DK |
1086 | asection *output_section = symbol->section->output_section |
1087 | ? symbol->section->output_section | |
1088 | : symbol->section; | |
07c7ed6d | 1089 | struct bfd_link_info *link_info = coff_data (abfd)->link_info; |
e7ebb214 | 1090 | bfd_boolean ret; |
252b5132 | 1091 | |
07c7ed6d KT |
1092 | if ((!link_info || link_info->strip_discarded) |
1093 | && !bfd_is_abs_section (symbol->section) | |
1094 | && symbol->section->output_section == bfd_abs_section_ptr) | |
1095 | { | |
1096 | symbol->name = ""; | |
e7ebb214 | 1097 | if (isym != NULL) |
07d6d2b8 | 1098 | memset (isym, 0, sizeof (*isym)); |
07c7ed6d KT |
1099 | return TRUE; |
1100 | } | |
e7ebb214 | 1101 | native = dummy; |
a5c71af8 NC |
1102 | native->is_sym = TRUE; |
1103 | native[1].is_sym = FALSE; | |
252b5132 RH |
1104 | native->u.syment.n_type = T_NULL; |
1105 | native->u.syment.n_flags = 0; | |
e7ebb214 | 1106 | native->u.syment.n_numaux = 0; |
252b5132 RH |
1107 | if (bfd_is_und_section (symbol->section)) |
1108 | { | |
1109 | native->u.syment.n_scnum = N_UNDEF; | |
1110 | native->u.syment.n_value = symbol->value; | |
1111 | } | |
1112 | else if (bfd_is_com_section (symbol->section)) | |
1113 | { | |
1114 | native->u.syment.n_scnum = N_UNDEF; | |
1115 | native->u.syment.n_value = symbol->value; | |
1116 | } | |
e7ebb214 JB |
1117 | else if (symbol->flags & BSF_FILE) |
1118 | { | |
1119 | native->u.syment.n_scnum = N_DEBUG; | |
1120 | native->u.syment.n_numaux = 1; | |
1121 | } | |
252b5132 RH |
1122 | else if (symbol->flags & BSF_DEBUGGING) |
1123 | { | |
1124 | /* There isn't much point to writing out a debugging symbol | |
07d6d2b8 AM |
1125 | unless we are prepared to convert it into COFF debugging |
1126 | format. So, we just ignore them. We must clobber the symbol | |
1127 | name to keep it from being put in the string table. */ | |
252b5132 | 1128 | symbol->name = ""; |
e7ebb214 | 1129 | if (isym != NULL) |
07d6d2b8 | 1130 | memset (isym, 0, sizeof (*isym)); |
b34976b6 | 1131 | return TRUE; |
252b5132 RH |
1132 | } |
1133 | else | |
1134 | { | |
88e59394 | 1135 | native->u.syment.n_scnum = output_section->target_index; |
252b5132 RH |
1136 | native->u.syment.n_value = (symbol->value |
1137 | + symbol->section->output_offset); | |
1138 | if (! obj_pe (abfd)) | |
88e59394 | 1139 | native->u.syment.n_value += output_section->vma; |
252b5132 | 1140 | |
08da05b0 | 1141 | /* Copy the any flags from the file header into the symbol. |
07d6d2b8 | 1142 | FIXME: Why? */ |
252b5132 | 1143 | { |
f4943d82 | 1144 | coff_symbol_type *c = coff_symbol_from (symbol); |
252b5132 RH |
1145 | if (c != (coff_symbol_type *) NULL) |
1146 | native->u.syment.n_flags = bfd_asymbol_bfd (&c->symbol)->flags; | |
1147 | } | |
1148 | } | |
1149 | ||
1150 | native->u.syment.n_type = 0; | |
e7ebb214 JB |
1151 | if (symbol->flags & BSF_FILE) |
1152 | native->u.syment.n_sclass = C_FILE; | |
1153 | else if (symbol->flags & BSF_LOCAL) | |
252b5132 RH |
1154 | native->u.syment.n_sclass = C_STAT; |
1155 | else if (symbol->flags & BSF_WEAK) | |
1156 | native->u.syment.n_sclass = obj_pe (abfd) ? C_NT_WEAK : C_WEAKEXT; | |
1157 | else | |
1158 | native->u.syment.n_sclass = C_EXT; | |
252b5132 | 1159 | |
e7ebb214 JB |
1160 | ret = coff_write_symbol (abfd, symbol, native, written, string_size_p, |
1161 | debug_string_section_p, debug_string_size_p); | |
1162 | if (isym != NULL) | |
1163 | *isym = native->u.syment; | |
270f8245 JB |
1164 | if (iaux != NULL && native->u.syment.n_numaux) |
1165 | *iaux = native[1].u.auxent; | |
e7ebb214 | 1166 | return ret; |
252b5132 RH |
1167 | } |
1168 | ||
1169 | /* Write a native symbol to a COFF file. */ | |
1170 | ||
b34976b6 | 1171 | static bfd_boolean |
c8e7bf0d NC |
1172 | coff_write_native_symbol (bfd *abfd, |
1173 | coff_symbol_type *symbol, | |
1174 | bfd_vma *written, | |
1175 | bfd_size_type *string_size_p, | |
1176 | asection **debug_string_section_p, | |
1177 | bfd_size_type *debug_string_size_p) | |
252b5132 RH |
1178 | { |
1179 | combined_entry_type *native = symbol->native; | |
1180 | alent *lineno = symbol->lineno; | |
07c7ed6d KT |
1181 | struct bfd_link_info *link_info = coff_data (abfd)->link_info; |
1182 | ||
1183 | if ((!link_info || link_info->strip_discarded) | |
1184 | && !bfd_is_abs_section (symbol->symbol.section) | |
1185 | && symbol->symbol.section->output_section == bfd_abs_section_ptr) | |
1186 | { | |
1187 | symbol->symbol.name = ""; | |
1188 | return TRUE; | |
1189 | } | |
252b5132 | 1190 | |
a5c71af8 | 1191 | BFD_ASSERT (native->is_sym); |
252b5132 RH |
1192 | /* If this symbol has an associated line number, we must store the |
1193 | symbol index in the line number field. We also tag the auxent to | |
1194 | point to the right place in the lineno table. */ | |
1195 | if (lineno && !symbol->done_lineno && symbol->symbol.section->owner != NULL) | |
1196 | { | |
1197 | unsigned int count = 0; | |
c8e7bf0d | 1198 | |
252b5132 RH |
1199 | lineno[count].u.offset = *written; |
1200 | if (native->u.syment.n_numaux) | |
1201 | { | |
1202 | union internal_auxent *a = &((native + 1)->u.auxent); | |
1203 | ||
1204 | a->x_sym.x_fcnary.x_fcn.x_lnnoptr = | |
1205 | symbol->symbol.section->output_section->moving_line_filepos; | |
1206 | } | |
1207 | ||
1208 | /* Count and relocate all other linenumbers. */ | |
1209 | count++; | |
1210 | while (lineno[count].line_number != 0) | |
1211 | { | |
252b5132 RH |
1212 | lineno[count].u.offset += |
1213 | (symbol->symbol.section->output_section->vma | |
1214 | + symbol->symbol.section->output_offset); | |
252b5132 RH |
1215 | count++; |
1216 | } | |
b34976b6 | 1217 | symbol->done_lineno = TRUE; |
252b5132 | 1218 | |
84c254c6 NC |
1219 | if (! bfd_is_const_section (symbol->symbol.section->output_section)) |
1220 | symbol->symbol.section->output_section->moving_line_filepos += | |
1221 | count * bfd_coff_linesz (abfd); | |
252b5132 RH |
1222 | } |
1223 | ||
1224 | return coff_write_symbol (abfd, &(symbol->symbol), native, written, | |
1225 | string_size_p, debug_string_section_p, | |
1226 | debug_string_size_p); | |
1227 | } | |
1228 | ||
e144674a | 1229 | static void |
52d45da3 AM |
1230 | null_error_handler (const char *fmt ATTRIBUTE_UNUSED, |
1231 | va_list ap ATTRIBUTE_UNUSED) | |
e144674a NC |
1232 | { |
1233 | } | |
1234 | ||
252b5132 RH |
1235 | /* Write out the COFF symbols. */ |
1236 | ||
b34976b6 | 1237 | bfd_boolean |
c8e7bf0d | 1238 | coff_write_symbols (bfd *abfd) |
252b5132 RH |
1239 | { |
1240 | bfd_size_type string_size; | |
1241 | asection *debug_string_section; | |
1242 | bfd_size_type debug_string_size; | |
1243 | unsigned int i; | |
1244 | unsigned int limit = bfd_get_symcount (abfd); | |
f075ee0c | 1245 | bfd_vma written = 0; |
252b5132 RH |
1246 | asymbol **p; |
1247 | ||
1248 | string_size = 0; | |
1249 | debug_string_section = NULL; | |
1250 | debug_string_size = 0; | |
1251 | ||
1252 | /* If this target supports long section names, they must be put into | |
1253 | the string table. This is supported by PE. This code must | |
1254 | handle section names just as they are handled in | |
1255 | coff_write_object_contents. */ | |
1256 | if (bfd_coff_long_section_names (abfd)) | |
1257 | { | |
1258 | asection *o; | |
1259 | ||
1260 | for (o = abfd->sections; o != NULL; o = o->next) | |
1261 | { | |
1262 | size_t len; | |
1263 | ||
1264 | len = strlen (o->name); | |
1265 | if (len > SCNNMLEN) | |
1266 | string_size += len + 1; | |
1267 | } | |
1268 | } | |
1269 | ||
c8e7bf0d | 1270 | /* Seek to the right place. */ |
252b5132 | 1271 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0) |
b34976b6 | 1272 | return FALSE; |
252b5132 | 1273 | |
c8e7bf0d | 1274 | /* Output all the symbols we have. */ |
252b5132 RH |
1275 | written = 0; |
1276 | for (p = abfd->outsymbols, i = 0; i < limit; i++, p++) | |
1277 | { | |
1278 | asymbol *symbol = *p; | |
f4943d82 | 1279 | coff_symbol_type *c_symbol = coff_symbol_from (symbol); |
252b5132 RH |
1280 | |
1281 | if (c_symbol == (coff_symbol_type *) NULL | |
1282 | || c_symbol->native == (combined_entry_type *) NULL) | |
1283 | { | |
270f8245 | 1284 | if (!coff_write_alien_symbol (abfd, symbol, NULL, NULL, &written, |
e7ebb214 | 1285 | &string_size, &debug_string_section, |
252b5132 | 1286 | &debug_string_size)) |
b34976b6 | 1287 | return FALSE; |
252b5132 RH |
1288 | } |
1289 | else | |
1290 | { | |
e144674a NC |
1291 | if (coff_backend_info (abfd)->_bfd_coff_classify_symbol != NULL) |
1292 | { | |
1293 | bfd_error_handler_type current_error_handler; | |
96d56e9f | 1294 | enum coff_symbol_classification sym_class; |
e144674a NC |
1295 | unsigned char *n_sclass; |
1296 | ||
1297 | /* Suppress error reporting by bfd_coff_classify_symbol. | |
1298 | Error messages can be generated when we are processing a local | |
1299 | symbol which has no associated section and we do not have to | |
1300 | worry about this, all we need to know is that it is local. */ | |
1301 | current_error_handler = bfd_set_error_handler (null_error_handler); | |
a5c71af8 | 1302 | BFD_ASSERT (c_symbol->native->is_sym); |
96d56e9f | 1303 | sym_class = bfd_coff_classify_symbol (abfd, |
a5c71af8 | 1304 | &c_symbol->native->u.syment); |
e144674a | 1305 | (void) bfd_set_error_handler (current_error_handler); |
96d56e9f | 1306 | |
e144674a NC |
1307 | n_sclass = &c_symbol->native->u.syment.n_sclass; |
1308 | ||
1309 | /* If the symbol class has been changed (eg objcopy/ld script/etc) | |
1310 | we cannot retain the existing sclass from the original symbol. | |
1311 | Weak symbols only have one valid sclass, so just set it always. | |
1312 | If it is not local class and should be, set it C_STAT. | |
1313 | If it is global and not classified as global, or if it is | |
1314 | weak (which is also classified as global), set it C_EXT. */ | |
1315 | ||
1316 | if (symbol->flags & BSF_WEAK) | |
1317 | *n_sclass = obj_pe (abfd) ? C_NT_WEAK : C_WEAKEXT; | |
96d56e9f | 1318 | else if (symbol->flags & BSF_LOCAL && sym_class != COFF_SYMBOL_LOCAL) |
e144674a NC |
1319 | *n_sclass = C_STAT; |
1320 | else if (symbol->flags & BSF_GLOBAL | |
96d56e9f | 1321 | && (sym_class != COFF_SYMBOL_GLOBAL |
e144674a NC |
1322 | #ifdef COFF_WITH_PE |
1323 | || *n_sclass == C_NT_WEAK | |
1324 | #endif | |
1325 | || *n_sclass == C_WEAKEXT)) | |
1326 | c_symbol->native->u.syment.n_sclass = C_EXT; | |
1327 | } | |
1328 | ||
252b5132 RH |
1329 | if (!coff_write_native_symbol (abfd, c_symbol, &written, |
1330 | &string_size, &debug_string_section, | |
1331 | &debug_string_size)) | |
b34976b6 | 1332 | return FALSE; |
252b5132 RH |
1333 | } |
1334 | } | |
1335 | ||
1336 | obj_raw_syment_count (abfd) = written; | |
1337 | ||
c8e7bf0d | 1338 | /* Now write out strings. */ |
252b5132 RH |
1339 | if (string_size != 0) |
1340 | { | |
1341 | unsigned int size = string_size + STRING_SIZE_SIZE; | |
1342 | bfd_byte buffer[STRING_SIZE_SIZE]; | |
1343 | ||
1344 | #if STRING_SIZE_SIZE == 4 | |
dc810e39 | 1345 | H_PUT_32 (abfd, size, buffer); |
252b5132 | 1346 | #else |
dc810e39 | 1347 | #error Change H_PUT_32 |
252b5132 | 1348 | #endif |
c8e7bf0d | 1349 | if (bfd_bwrite ((void *) buffer, (bfd_size_type) sizeof (buffer), abfd) |
dc810e39 | 1350 | != sizeof (buffer)) |
b34976b6 | 1351 | return FALSE; |
252b5132 RH |
1352 | |
1353 | /* Handle long section names. This code must handle section | |
1354 | names just as they are handled in coff_write_object_contents. */ | |
1355 | if (bfd_coff_long_section_names (abfd)) | |
1356 | { | |
1357 | asection *o; | |
1358 | ||
1359 | for (o = abfd->sections; o != NULL; o = o->next) | |
1360 | { | |
1361 | size_t len; | |
1362 | ||
1363 | len = strlen (o->name); | |
1364 | if (len > SCNNMLEN) | |
1365 | { | |
dc810e39 AM |
1366 | if (bfd_bwrite (o->name, (bfd_size_type) (len + 1), abfd) |
1367 | != len + 1) | |
b34976b6 | 1368 | return FALSE; |
252b5132 RH |
1369 | } |
1370 | } | |
1371 | } | |
1372 | ||
1373 | for (p = abfd->outsymbols, i = 0; | |
1374 | i < limit; | |
1375 | i++, p++) | |
1376 | { | |
1377 | asymbol *q = *p; | |
1378 | size_t name_length = strlen (q->name); | |
f4943d82 | 1379 | coff_symbol_type *c_symbol = coff_symbol_from (q); |
252b5132 RH |
1380 | size_t maxlen; |
1381 | ||
1382 | /* Figure out whether the symbol name should go in the string | |
1383 | table. Symbol names that are short enough are stored | |
1384 | directly in the syment structure. File names permit a | |
1385 | different, longer, length in the syment structure. On | |
1386 | XCOFF, some symbol names are stored in the .debug section | |
1387 | rather than in the string table. */ | |
1388 | ||
1389 | if (c_symbol == NULL | |
1390 | || c_symbol->native == NULL) | |
c8e7bf0d NC |
1391 | /* This is not a COFF symbol, so it certainly is not a |
1392 | file name, nor does it go in the .debug section. */ | |
1393 | maxlen = bfd_coff_force_symnames_in_strings (abfd) ? 0 : SYMNMLEN; | |
1394 | ||
a5c71af8 NC |
1395 | else if (! c_symbol->native->is_sym) |
1396 | maxlen = bfd_coff_force_symnames_in_strings (abfd) ? 0 : SYMNMLEN; | |
1b786873 | 1397 | |
252b5132 RH |
1398 | else if (bfd_coff_symname_in_debug (abfd, |
1399 | &c_symbol->native->u.syment)) | |
c8e7bf0d NC |
1400 | /* This symbol name is in the XCOFF .debug section. |
1401 | Don't write it into the string table. */ | |
1402 | maxlen = name_length; | |
1403 | ||
252b5132 RH |
1404 | else if (c_symbol->native->u.syment.n_sclass == C_FILE |
1405 | && c_symbol->native->u.syment.n_numaux > 0) | |
7f6d05e8 | 1406 | { |
244148ad | 1407 | if (bfd_coff_force_symnames_in_strings (abfd)) |
dc810e39 AM |
1408 | { |
1409 | if (bfd_bwrite (".file", (bfd_size_type) 6, abfd) != 6) | |
b34976b6 | 1410 | return FALSE; |
dc810e39 | 1411 | } |
7f6d05e8 CP |
1412 | maxlen = bfd_coff_filnmlen (abfd); |
1413 | } | |
252b5132 | 1414 | else |
7f6d05e8 | 1415 | maxlen = bfd_coff_force_symnames_in_strings (abfd) ? 0 : SYMNMLEN; |
252b5132 RH |
1416 | |
1417 | if (name_length > maxlen) | |
1418 | { | |
c8e7bf0d | 1419 | if (bfd_bwrite ((void *) (q->name), (bfd_size_type) name_length + 1, |
dc810e39 | 1420 | abfd) != name_length + 1) |
b34976b6 | 1421 | return FALSE; |
252b5132 RH |
1422 | } |
1423 | } | |
1424 | } | |
1425 | else | |
1426 | { | |
1427 | /* We would normally not write anything here, but we'll write | |
07d6d2b8 AM |
1428 | out 4 so that any stupid coff reader which tries to read the |
1429 | string table even when there isn't one won't croak. */ | |
252b5132 RH |
1430 | unsigned int size = STRING_SIZE_SIZE; |
1431 | bfd_byte buffer[STRING_SIZE_SIZE]; | |
1432 | ||
1433 | #if STRING_SIZE_SIZE == 4 | |
dc810e39 | 1434 | H_PUT_32 (abfd, size, buffer); |
252b5132 | 1435 | #else |
dc810e39 | 1436 | #error Change H_PUT_32 |
252b5132 | 1437 | #endif |
c8e7bf0d | 1438 | if (bfd_bwrite ((void *) buffer, (bfd_size_type) STRING_SIZE_SIZE, abfd) |
252b5132 | 1439 | != STRING_SIZE_SIZE) |
b34976b6 | 1440 | return FALSE; |
252b5132 RH |
1441 | } |
1442 | ||
1443 | /* Make sure the .debug section was created to be the correct size. | |
1444 | We should create it ourselves on the fly, but we don't because | |
1445 | BFD won't let us write to any section until we know how large all | |
1446 | the sections are. We could still do it by making another pass | |
1447 | over the symbols. FIXME. */ | |
1448 | BFD_ASSERT (debug_string_size == 0 | |
1449 | || (debug_string_section != (asection *) NULL | |
1450 | && (BFD_ALIGN (debug_string_size, | |
1451 | 1 << debug_string_section->alignment_power) | |
eea6121a | 1452 | == debug_string_section->size))); |
252b5132 | 1453 | |
b34976b6 | 1454 | return TRUE; |
252b5132 RH |
1455 | } |
1456 | ||
b34976b6 | 1457 | bfd_boolean |
c8e7bf0d | 1458 | coff_write_linenumbers (bfd *abfd) |
252b5132 RH |
1459 | { |
1460 | asection *s; | |
1461 | bfd_size_type linesz; | |
c8e7bf0d | 1462 | void * buff; |
252b5132 RH |
1463 | |
1464 | linesz = bfd_coff_linesz (abfd); | |
1465 | buff = bfd_alloc (abfd, linesz); | |
1466 | if (!buff) | |
b34976b6 | 1467 | return FALSE; |
252b5132 RH |
1468 | for (s = abfd->sections; s != (asection *) NULL; s = s->next) |
1469 | { | |
1470 | if (s->lineno_count) | |
1471 | { | |
1472 | asymbol **q = abfd->outsymbols; | |
1473 | if (bfd_seek (abfd, s->line_filepos, SEEK_SET) != 0) | |
b34976b6 | 1474 | return FALSE; |
c8e7bf0d | 1475 | /* Find all the linenumbers in this section. */ |
252b5132 RH |
1476 | while (*q) |
1477 | { | |
1478 | asymbol *p = *q; | |
1479 | if (p->section->output_section == s) | |
1480 | { | |
1481 | alent *l = | |
1482 | BFD_SEND (bfd_asymbol_bfd (p), _get_lineno, | |
1483 | (bfd_asymbol_bfd (p), p)); | |
1484 | if (l) | |
1485 | { | |
c8e7bf0d | 1486 | /* Found a linenumber entry, output. */ |
252b5132 | 1487 | struct internal_lineno out; |
a5c71af8 | 1488 | |
c8e7bf0d | 1489 | memset ((void *) & out, 0, sizeof (out)); |
252b5132 RH |
1490 | out.l_lnno = 0; |
1491 | out.l_addr.l_symndx = l->u.offset; | |
1492 | bfd_coff_swap_lineno_out (abfd, &out, buff); | |
dc810e39 AM |
1493 | if (bfd_bwrite (buff, (bfd_size_type) linesz, abfd) |
1494 | != linesz) | |
b34976b6 | 1495 | return FALSE; |
252b5132 RH |
1496 | l++; |
1497 | while (l->line_number) | |
1498 | { | |
1499 | out.l_lnno = l->line_number; | |
1500 | out.l_addr.l_symndx = l->u.offset; | |
1501 | bfd_coff_swap_lineno_out (abfd, &out, buff); | |
dc810e39 AM |
1502 | if (bfd_bwrite (buff, (bfd_size_type) linesz, abfd) |
1503 | != linesz) | |
b34976b6 | 1504 | return FALSE; |
252b5132 RH |
1505 | l++; |
1506 | } | |
1507 | } | |
1508 | } | |
1509 | q++; | |
1510 | } | |
1511 | } | |
1512 | } | |
1513 | bfd_release (abfd, buff); | |
b34976b6 | 1514 | return TRUE; |
252b5132 RH |
1515 | } |
1516 | ||
252b5132 | 1517 | alent * |
c8e7bf0d | 1518 | coff_get_lineno (bfd *ignore_abfd ATTRIBUTE_UNUSED, asymbol *symbol) |
252b5132 RH |
1519 | { |
1520 | return coffsymbol (symbol)->lineno; | |
1521 | } | |
1522 | ||
252b5132 RH |
1523 | /* This function transforms the offsets into the symbol table into |
1524 | pointers to syments. */ | |
1525 | ||
1526 | static void | |
c8e7bf0d NC |
1527 | coff_pointerize_aux (bfd *abfd, |
1528 | combined_entry_type *table_base, | |
1529 | combined_entry_type *symbol, | |
1530 | unsigned int indaux, | |
334d4ced NC |
1531 | combined_entry_type *auxent, |
1532 | combined_entry_type *table_end) | |
252b5132 RH |
1533 | { |
1534 | unsigned int type = symbol->u.syment.n_type; | |
96d56e9f | 1535 | unsigned int n_sclass = symbol->u.syment.n_sclass; |
252b5132 | 1536 | |
a5c71af8 | 1537 | BFD_ASSERT (symbol->is_sym); |
252b5132 RH |
1538 | if (coff_backend_info (abfd)->_bfd_coff_pointerize_aux_hook) |
1539 | { | |
1540 | if ((*coff_backend_info (abfd)->_bfd_coff_pointerize_aux_hook) | |
1541 | (abfd, table_base, symbol, indaux, auxent)) | |
1542 | return; | |
1543 | } | |
1544 | ||
c8e7bf0d | 1545 | /* Don't bother if this is a file or a section. */ |
96d56e9f | 1546 | if (n_sclass == C_STAT && type == T_NULL) |
252b5132 | 1547 | return; |
96d56e9f | 1548 | if (n_sclass == C_FILE) |
252b5132 RH |
1549 | return; |
1550 | ||
a5c71af8 | 1551 | BFD_ASSERT (! auxent->is_sym); |
c8e7bf0d NC |
1552 | /* Otherwise patch up. */ |
1553 | #define N_TMASK coff_data (abfd)->local_n_tmask | |
252b5132 | 1554 | #define N_BTSHFT coff_data (abfd)->local_n_btshft |
68ffbac6 | 1555 | |
96d56e9f NC |
1556 | if ((ISFCN (type) || ISTAG (n_sclass) || n_sclass == C_BLOCK |
1557 | || n_sclass == C_FCN) | |
e9af4700 NC |
1558 | && auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l > 0 |
1559 | && auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l | |
334d4ced NC |
1560 | < (long) obj_raw_syment_count (abfd) |
1561 | && table_base + auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l | |
1562 | < table_end) | |
252b5132 RH |
1563 | { |
1564 | auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p = | |
1565 | table_base + auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l; | |
1566 | auxent->fix_end = 1; | |
1567 | } | |
334d4ced | 1568 | |
252b5132 RH |
1569 | /* A negative tagndx is meaningless, but the SCO 3.2v4 cc can |
1570 | generate one, so we must be careful to ignore it. */ | |
eb77f6a4 | 1571 | if ((unsigned long) auxent->u.auxent.x_sym.x_tagndx.l |
334d4ced NC |
1572 | < obj_raw_syment_count (abfd) |
1573 | && table_base + auxent->u.auxent.x_sym.x_tagndx.l < table_end) | |
252b5132 RH |
1574 | { |
1575 | auxent->u.auxent.x_sym.x_tagndx.p = | |
1576 | table_base + auxent->u.auxent.x_sym.x_tagndx.l; | |
1577 | auxent->fix_tag = 1; | |
1578 | } | |
1579 | } | |
1580 | ||
1581 | /* Allocate space for the ".debug" section, and read it. | |
1582 | We did not read the debug section until now, because | |
244148ad | 1583 | we didn't want to go to the trouble until someone needed it. */ |
252b5132 RH |
1584 | |
1585 | static char * | |
5a3f568b | 1586 | build_debug_section (bfd *abfd, asection ** sect_return) |
252b5132 RH |
1587 | { |
1588 | char *debug_section; | |
dc810e39 AM |
1589 | file_ptr position; |
1590 | bfd_size_type sec_size; | |
252b5132 RH |
1591 | |
1592 | asection *sect = bfd_get_section_by_name (abfd, ".debug"); | |
1593 | ||
1594 | if (!sect) | |
1595 | { | |
1596 | bfd_set_error (bfd_error_no_debug_section); | |
1597 | return NULL; | |
1598 | } | |
1599 | ||
eea6121a | 1600 | sec_size = sect->size; |
a50b1753 | 1601 | debug_section = (char *) bfd_alloc (abfd, sec_size); |
252b5132 RH |
1602 | if (debug_section == NULL) |
1603 | return NULL; | |
1604 | ||
244148ad | 1605 | /* Seek to the beginning of the `.debug' section and read it. |
252b5132 RH |
1606 | Save the current position first; it is needed by our caller. |
1607 | Then read debug section and reset the file pointer. */ | |
1608 | ||
1609 | position = bfd_tell (abfd); | |
1610 | if (bfd_seek (abfd, sect->filepos, SEEK_SET) != 0 | |
dc810e39 | 1611 | || bfd_bread (debug_section, sec_size, abfd) != sec_size |
252b5132 RH |
1612 | || bfd_seek (abfd, position, SEEK_SET) != 0) |
1613 | return NULL; | |
5a3f568b NC |
1614 | |
1615 | * sect_return = sect; | |
252b5132 RH |
1616 | return debug_section; |
1617 | } | |
1618 | ||
252b5132 RH |
1619 | /* Return a pointer to a malloc'd copy of 'name'. 'name' may not be |
1620 | \0-terminated, but will not exceed 'maxlen' characters. The copy *will* | |
1621 | be \0-terminated. */ | |
c8e7bf0d | 1622 | |
252b5132 | 1623 | static char * |
c8e7bf0d | 1624 | copy_name (bfd *abfd, char *name, size_t maxlen) |
252b5132 | 1625 | { |
dc810e39 | 1626 | size_t len; |
252b5132 RH |
1627 | char *newname; |
1628 | ||
1629 | for (len = 0; len < maxlen; ++len) | |
c8e7bf0d NC |
1630 | if (name[len] == '\0') |
1631 | break; | |
1632 | ||
a50b1753 | 1633 | if ((newname = (char *) bfd_alloc (abfd, (bfd_size_type) len + 1)) == NULL) |
c8e7bf0d | 1634 | return NULL; |
252b5132 | 1635 | |
252b5132 RH |
1636 | strncpy (newname, name, len); |
1637 | newname[len] = '\0'; | |
1638 | return newname; | |
1639 | } | |
1640 | ||
1641 | /* Read in the external symbols. */ | |
1642 | ||
b34976b6 | 1643 | bfd_boolean |
c8e7bf0d | 1644 | _bfd_coff_get_external_symbols (bfd *abfd) |
252b5132 RH |
1645 | { |
1646 | bfd_size_type symesz; | |
dc810e39 | 1647 | bfd_size_type size; |
c8e7bf0d | 1648 | void * syms; |
252b5132 RH |
1649 | |
1650 | if (obj_coff_external_syms (abfd) != NULL) | |
b34976b6 | 1651 | return TRUE; |
252b5132 RH |
1652 | |
1653 | symesz = bfd_coff_symesz (abfd); | |
1654 | ||
1655 | size = obj_raw_syment_count (abfd) * symesz; | |
353c5574 MS |
1656 | if (size == 0) |
1657 | return TRUE; | |
6cee8979 NC |
1658 | /* Check for integer overflow and for unreasonable symbol counts. */ |
1659 | if (size < obj_raw_syment_count (abfd) | |
1660 | || (bfd_get_file_size (abfd) > 0 | |
1661 | && size > bfd_get_file_size (abfd))) | |
07d6d2b8 | 1662 | |
6cee8979 | 1663 | { |
2dcf00ce AM |
1664 | _bfd_error_handler (_("%pB: corrupt symbol count: %#" PRIx64 ""), |
1665 | abfd, (uint64_t) obj_raw_syment_count (abfd)); | |
6cee8979 NC |
1666 | return FALSE; |
1667 | } | |
252b5132 | 1668 | |
c8e7bf0d | 1669 | syms = bfd_malloc (size); |
353c5574 | 1670 | if (syms == NULL) |
98f02962 NC |
1671 | { |
1672 | /* PR 21013: Provide an error message when the alloc fails. */ | |
2dcf00ce AM |
1673 | _bfd_error_handler (_("%pB: not enough memory to allocate space " |
1674 | "for %#" PRIx64 " symbols of size %#" PRIx64), | |
1675 | abfd, (uint64_t) obj_raw_syment_count (abfd), | |
1676 | (uint64_t) symesz); | |
98f02962 NC |
1677 | return FALSE; |
1678 | } | |
252b5132 RH |
1679 | |
1680 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0 | |
dc810e39 | 1681 | || bfd_bread (syms, size, abfd) != size) |
252b5132 RH |
1682 | { |
1683 | if (syms != NULL) | |
1684 | free (syms); | |
b34976b6 | 1685 | return FALSE; |
252b5132 RH |
1686 | } |
1687 | ||
1688 | obj_coff_external_syms (abfd) = syms; | |
b34976b6 | 1689 | return TRUE; |
252b5132 RH |
1690 | } |
1691 | ||
1692 | /* Read in the external strings. The strings are not loaded until | |
1693 | they are needed. This is because we have no simple way of | |
5a3f568b NC |
1694 | detecting a missing string table in an archive. If the strings |
1695 | are loaded then the STRINGS and STRINGS_LEN fields in the | |
1696 | coff_tdata structure will be set. */ | |
252b5132 RH |
1697 | |
1698 | const char * | |
c8e7bf0d | 1699 | _bfd_coff_read_string_table (bfd *abfd) |
252b5132 RH |
1700 | { |
1701 | char extstrsize[STRING_SIZE_SIZE]; | |
dc810e39 | 1702 | bfd_size_type strsize; |
252b5132 | 1703 | char *strings; |
dc810e39 | 1704 | file_ptr pos; |
252b5132 RH |
1705 | |
1706 | if (obj_coff_strings (abfd) != NULL) | |
1707 | return obj_coff_strings (abfd); | |
1708 | ||
1709 | if (obj_sym_filepos (abfd) == 0) | |
1710 | { | |
1711 | bfd_set_error (bfd_error_no_symbols); | |
1712 | return NULL; | |
1713 | } | |
1714 | ||
dc810e39 AM |
1715 | pos = obj_sym_filepos (abfd); |
1716 | pos += obj_raw_syment_count (abfd) * bfd_coff_symesz (abfd); | |
1717 | if (bfd_seek (abfd, pos, SEEK_SET) != 0) | |
252b5132 | 1718 | return NULL; |
244148ad | 1719 | |
dc810e39 AM |
1720 | if (bfd_bread (extstrsize, (bfd_size_type) sizeof extstrsize, abfd) |
1721 | != sizeof extstrsize) | |
252b5132 RH |
1722 | { |
1723 | if (bfd_get_error () != bfd_error_file_truncated) | |
1724 | return NULL; | |
1725 | ||
1726 | /* There is no string table. */ | |
1727 | strsize = STRING_SIZE_SIZE; | |
1728 | } | |
1729 | else | |
1730 | { | |
1731 | #if STRING_SIZE_SIZE == 4 | |
dc810e39 | 1732 | strsize = H_GET_32 (abfd, extstrsize); |
252b5132 | 1733 | #else |
dc810e39 | 1734 | #error Change H_GET_32 |
252b5132 RH |
1735 | #endif |
1736 | } | |
1737 | ||
b0029dce | 1738 | if (strsize < STRING_SIZE_SIZE || strsize > bfd_get_file_size (abfd)) |
252b5132 | 1739 | { |
4eca0228 | 1740 | _bfd_error_handler |
695344c0 | 1741 | /* xgettext: c-format */ |
2dcf00ce | 1742 | (_("%pB: bad string table size %" PRIu64), abfd, (uint64_t) strsize); |
252b5132 RH |
1743 | bfd_set_error (bfd_error_bad_value); |
1744 | return NULL; | |
1745 | } | |
07d6d2b8 | 1746 | |
36e9d67b | 1747 | strings = (char *) bfd_malloc (strsize + 1); |
cd11f78f AC |
1748 | if (strings == NULL) |
1749 | return NULL; | |
1750 | ||
36e9d67b NC |
1751 | /* PR 17521 file: 079-54929-0.004. |
1752 | A corrupt file could contain an index that points into the first | |
1753 | STRING_SIZE_SIZE bytes of the string table, so make sure that | |
1754 | they are zero. */ | |
1755 | memset (strings, 0, STRING_SIZE_SIZE); | |
1756 | ||
dc810e39 | 1757 | if (bfd_bread (strings + STRING_SIZE_SIZE, strsize - STRING_SIZE_SIZE, abfd) |
252b5132 RH |
1758 | != strsize - STRING_SIZE_SIZE) |
1759 | { | |
1760 | free (strings); | |
1761 | return NULL; | |
1762 | } | |
1763 | ||
1764 | obj_coff_strings (abfd) = strings; | |
5a3f568b | 1765 | obj_coff_strings_len (abfd) = strsize; |
36e9d67b NC |
1766 | /* Terminate the string table, just in case. */ |
1767 | strings[strsize] = 0; | |
252b5132 RH |
1768 | return strings; |
1769 | } | |
1770 | ||
1771 | /* Free up the external symbols and strings read from a COFF file. */ | |
1772 | ||
b34976b6 | 1773 | bfd_boolean |
c8e7bf0d | 1774 | _bfd_coff_free_symbols (bfd *abfd) |
252b5132 | 1775 | { |
ee357486 NC |
1776 | if (! bfd_family_coff (abfd)) |
1777 | return FALSE; | |
1778 | ||
252b5132 RH |
1779 | if (obj_coff_external_syms (abfd) != NULL |
1780 | && ! obj_coff_keep_syms (abfd)) | |
1781 | { | |
1782 | free (obj_coff_external_syms (abfd)); | |
1783 | obj_coff_external_syms (abfd) = NULL; | |
1784 | } | |
ee357486 | 1785 | |
252b5132 RH |
1786 | if (obj_coff_strings (abfd) != NULL |
1787 | && ! obj_coff_keep_strings (abfd)) | |
1788 | { | |
1789 | free (obj_coff_strings (abfd)); | |
1790 | obj_coff_strings (abfd) = NULL; | |
5a3f568b | 1791 | obj_coff_strings_len (abfd) = 0; |
252b5132 | 1792 | } |
ee357486 | 1793 | |
b34976b6 | 1794 | return TRUE; |
252b5132 RH |
1795 | } |
1796 | ||
1797 | /* Read a symbol table into freshly bfd_allocated memory, swap it, and | |
1798 | knit the symbol names into a normalized form. By normalized here I | |
1799 | mean that all symbols have an n_offset pointer that points to a null- | |
1800 | terminated string. */ | |
1801 | ||
1802 | combined_entry_type * | |
c8e7bf0d | 1803 | coff_get_normalized_symtab (bfd *abfd) |
252b5132 RH |
1804 | { |
1805 | combined_entry_type *internal; | |
1806 | combined_entry_type *internal_ptr; | |
1807 | combined_entry_type *symbol_ptr; | |
1808 | combined_entry_type *internal_end; | |
dc810e39 | 1809 | size_t symesz; |
252b5132 RH |
1810 | char *raw_src; |
1811 | char *raw_end; | |
1812 | const char *string_table = NULL; | |
5a3f568b NC |
1813 | asection * debug_sec = NULL; |
1814 | char *debug_sec_data = NULL; | |
dc810e39 | 1815 | bfd_size_type size; |
252b5132 RH |
1816 | |
1817 | if (obj_raw_syments (abfd) != NULL) | |
1818 | return obj_raw_syments (abfd); | |
1819 | ||
201159ec NC |
1820 | if (! _bfd_coff_get_external_symbols (abfd)) |
1821 | return NULL; | |
1822 | ||
f14080d4 | 1823 | size = obj_raw_syment_count (abfd); |
6cee8979 | 1824 | /* Check for integer overflow. */ |
f14080d4 | 1825 | if (size > (bfd_size_type) -1 / sizeof (combined_entry_type)) |
6cee8979 | 1826 | return NULL; |
f14080d4 | 1827 | size *= sizeof (combined_entry_type); |
a50b1753 | 1828 | internal = (combined_entry_type *) bfd_zalloc (abfd, size); |
252b5132 RH |
1829 | if (internal == NULL && size != 0) |
1830 | return NULL; | |
1831 | internal_end = internal + obj_raw_syment_count (abfd); | |
1b786873 | 1832 | |
252b5132 RH |
1833 | raw_src = (char *) obj_coff_external_syms (abfd); |
1834 | ||
c8e7bf0d | 1835 | /* Mark the end of the symbols. */ |
252b5132 RH |
1836 | symesz = bfd_coff_symesz (abfd); |
1837 | raw_end = (char *) raw_src + obj_raw_syment_count (abfd) * symesz; | |
1838 | ||
1839 | /* FIXME SOMEDAY. A string table size of zero is very weird, but | |
1840 | probably possible. If one shows up, it will probably kill us. */ | |
1841 | ||
c8e7bf0d | 1842 | /* Swap all the raw entries. */ |
252b5132 RH |
1843 | for (internal_ptr = internal; |
1844 | raw_src < raw_end; | |
1845 | raw_src += symesz, internal_ptr++) | |
1846 | { | |
252b5132 | 1847 | unsigned int i; |
7e760b06 | 1848 | |
c8e7bf0d NC |
1849 | bfd_coff_swap_sym_in (abfd, (void *) raw_src, |
1850 | (void *) & internal_ptr->u.syment); | |
252b5132 | 1851 | symbol_ptr = internal_ptr; |
a5c71af8 | 1852 | internal_ptr->is_sym = TRUE; |
252b5132 RH |
1853 | |
1854 | for (i = 0; | |
1855 | i < symbol_ptr->u.syment.n_numaux; | |
1856 | i++) | |
1857 | { | |
1858 | internal_ptr++; | |
f14080d4 AM |
1859 | raw_src += symesz; |
1860 | ||
7e760b06 | 1861 | /* PR 17512: Prevent buffer overrun. */ |
f14080d4 | 1862 | if (raw_src >= raw_end || internal_ptr >= internal_end) |
0a9d414a NC |
1863 | { |
1864 | bfd_release (abfd, internal); | |
1865 | return NULL; | |
1866 | } | |
7e760b06 | 1867 | |
c8e7bf0d | 1868 | bfd_coff_swap_aux_in (abfd, (void *) raw_src, |
252b5132 RH |
1869 | symbol_ptr->u.syment.n_type, |
1870 | symbol_ptr->u.syment.n_sclass, | |
dc810e39 | 1871 | (int) i, symbol_ptr->u.syment.n_numaux, |
252b5132 | 1872 | &(internal_ptr->u.auxent)); |
0a9d414a | 1873 | |
a5c71af8 | 1874 | internal_ptr->is_sym = FALSE; |
252b5132 | 1875 | coff_pointerize_aux (abfd, internal, symbol_ptr, i, |
334d4ced | 1876 | internal_ptr, internal_end); |
252b5132 RH |
1877 | } |
1878 | } | |
1879 | ||
1880 | /* Free the raw symbols, but not the strings (if we have them). */ | |
b34976b6 | 1881 | obj_coff_keep_strings (abfd) = TRUE; |
252b5132 RH |
1882 | if (! _bfd_coff_free_symbols (abfd)) |
1883 | return NULL; | |
1884 | ||
1885 | for (internal_ptr = internal; internal_ptr < internal_end; | |
1886 | internal_ptr++) | |
1887 | { | |
a5c71af8 NC |
1888 | BFD_ASSERT (internal_ptr->is_sym); |
1889 | ||
252b5132 RH |
1890 | if (internal_ptr->u.syment.n_sclass == C_FILE |
1891 | && internal_ptr->u.syment.n_numaux > 0) | |
1892 | { | |
a5c71af8 NC |
1893 | combined_entry_type * aux = internal_ptr + 1; |
1894 | ||
c8e7bf0d NC |
1895 | /* Make a file symbol point to the name in the auxent, since |
1896 | the text ".file" is redundant. */ | |
a5c71af8 NC |
1897 | BFD_ASSERT (! aux->is_sym); |
1898 | ||
1899 | if (aux->u.auxent.x_file.x_n.x_zeroes == 0) | |
252b5132 | 1900 | { |
c8e7bf0d | 1901 | /* The filename is a long one, point into the string table. */ |
252b5132 RH |
1902 | if (string_table == NULL) |
1903 | { | |
1904 | string_table = _bfd_coff_read_string_table (abfd); | |
1905 | if (string_table == NULL) | |
1906 | return NULL; | |
1907 | } | |
a5c71af8 NC |
1908 | |
1909 | if ((bfd_size_type)(aux->u.auxent.x_file.x_n.x_offset) | |
5a3f568b NC |
1910 | >= obj_coff_strings_len (abfd)) |
1911 | internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) _("<corrupt>"); | |
1912 | else | |
1913 | internal_ptr->u.syment._n._n_n._n_offset = | |
a5c71af8 | 1914 | (bfd_hostptr_t) (string_table + (aux->u.auxent.x_file.x_n.x_offset)); |
252b5132 RH |
1915 | } |
1916 | else | |
1917 | { | |
7bb9db4d | 1918 | /* Ordinary short filename, put into memory anyway. The |
07d6d2b8 AM |
1919 | Microsoft PE tools sometimes store a filename in |
1920 | multiple AUX entries. */ | |
ec0ef80e DD |
1921 | if (internal_ptr->u.syment.n_numaux > 1 |
1922 | && coff_data (abfd)->pe) | |
c8e7bf0d | 1923 | internal_ptr->u.syment._n._n_n._n_offset = |
a5c71af8 NC |
1924 | (bfd_hostptr_t) |
1925 | copy_name (abfd, | |
1926 | aux->u.auxent.x_file.x_fname, | |
1927 | internal_ptr->u.syment.n_numaux * symesz); | |
ec0ef80e | 1928 | else |
c8e7bf0d | 1929 | internal_ptr->u.syment._n._n_n._n_offset = |
d2df793a | 1930 | ((bfd_hostptr_t) |
c8e7bf0d | 1931 | copy_name (abfd, |
a5c71af8 | 1932 | aux->u.auxent.x_file.x_fname, |
c8e7bf0d | 1933 | (size_t) bfd_coff_filnmlen (abfd))); |
252b5132 RH |
1934 | } |
1935 | } | |
1936 | else | |
1937 | { | |
1938 | if (internal_ptr->u.syment._n._n_n._n_zeroes != 0) | |
1939 | { | |
1940 | /* This is a "short" name. Make it long. */ | |
dc810e39 AM |
1941 | size_t i; |
1942 | char *newstring; | |
252b5132 | 1943 | |
c8e7bf0d | 1944 | /* Find the length of this string without walking into memory |
07d6d2b8 | 1945 | that isn't ours. */ |
252b5132 | 1946 | for (i = 0; i < 8; ++i) |
dc810e39 AM |
1947 | if (internal_ptr->u.syment._n._n_name[i] == '\0') |
1948 | break; | |
252b5132 | 1949 | |
a50b1753 | 1950 | newstring = (char *) bfd_zalloc (abfd, (bfd_size_type) (i + 1)); |
dc810e39 | 1951 | if (newstring == NULL) |
c8e7bf0d | 1952 | return NULL; |
dc810e39 | 1953 | strncpy (newstring, internal_ptr->u.syment._n._n_name, i); |
d2df793a | 1954 | internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) newstring; |
252b5132 RH |
1955 | internal_ptr->u.syment._n._n_n._n_zeroes = 0; |
1956 | } | |
1957 | else if (internal_ptr->u.syment._n._n_n._n_offset == 0) | |
649aeae3 | 1958 | internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) ""; |
252b5132 RH |
1959 | else if (!bfd_coff_symname_in_debug (abfd, &internal_ptr->u.syment)) |
1960 | { | |
1961 | /* Long name already. Point symbol at the string in the | |
07d6d2b8 | 1962 | table. */ |
252b5132 RH |
1963 | if (string_table == NULL) |
1964 | { | |
1965 | string_table = _bfd_coff_read_string_table (abfd); | |
1966 | if (string_table == NULL) | |
1967 | return NULL; | |
1968 | } | |
36e9d67b NC |
1969 | if (internal_ptr->u.syment._n._n_n._n_offset >= obj_coff_strings_len (abfd) |
1970 | || string_table + internal_ptr->u.syment._n._n_n._n_offset < string_table) | |
5a3f568b NC |
1971 | internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) _("<corrupt>"); |
1972 | else | |
1973 | internal_ptr->u.syment._n._n_n._n_offset = | |
1974 | ((bfd_hostptr_t) | |
1975 | (string_table | |
1976 | + internal_ptr->u.syment._n._n_n._n_offset)); | |
252b5132 RH |
1977 | } |
1978 | else | |
1979 | { | |
1980 | /* Long name in debug section. Very similar. */ | |
5a3f568b NC |
1981 | if (debug_sec_data == NULL) |
1982 | debug_sec_data = build_debug_section (abfd, & debug_sec); | |
1983 | if (debug_sec_data != NULL) | |
1984 | { | |
1985 | BFD_ASSERT (debug_sec != NULL); | |
1986 | /* PR binutils/17512: Catch out of range offsets into the debug data. */ | |
36e9d67b NC |
1987 | if (internal_ptr->u.syment._n._n_n._n_offset > debug_sec->size |
1988 | || debug_sec_data + internal_ptr->u.syment._n._n_n._n_offset < debug_sec_data) | |
5a3f568b NC |
1989 | internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) _("<corrupt>"); |
1990 | else | |
1991 | internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) | |
1992 | (debug_sec_data + internal_ptr->u.syment._n._n_n._n_offset); | |
1993 | } | |
1994 | else | |
1995 | internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) ""; | |
252b5132 RH |
1996 | } |
1997 | } | |
1998 | internal_ptr += internal_ptr->u.syment.n_numaux; | |
1999 | } | |
2000 | ||
2001 | obj_raw_syments (abfd) = internal; | |
2002 | BFD_ASSERT (obj_raw_syment_count (abfd) | |
2003 | == (unsigned int) (internal_ptr - internal)); | |
2004 | ||
c8e7bf0d NC |
2005 | return internal; |
2006 | } | |
252b5132 RH |
2007 | |
2008 | long | |
c8e7bf0d | 2009 | coff_get_reloc_upper_bound (bfd *abfd, sec_ptr asect) |
252b5132 RH |
2010 | { |
2011 | if (bfd_get_format (abfd) != bfd_object) | |
2012 | { | |
2013 | bfd_set_error (bfd_error_invalid_operation); | |
2014 | return -1; | |
2015 | } | |
242a1159 | 2016 | #if SIZEOF_LONG == SIZEOF_INT |
7a6e0d89 AM |
2017 | if (asect->reloc_count >= LONG_MAX / sizeof (arelent *)) |
2018 | { | |
2019 | bfd_set_error (bfd_error_file_too_big); | |
2020 | return -1; | |
2021 | } | |
242a1159 | 2022 | #endif |
252b5132 RH |
2023 | return (asect->reloc_count + 1) * sizeof (arelent *); |
2024 | } | |
2025 | ||
2026 | asymbol * | |
c8e7bf0d | 2027 | coff_make_empty_symbol (bfd *abfd) |
252b5132 | 2028 | { |
dc810e39 | 2029 | bfd_size_type amt = sizeof (coff_symbol_type); |
d3ce72d0 | 2030 | coff_symbol_type *new_symbol = (coff_symbol_type *) bfd_zalloc (abfd, amt); |
c8e7bf0d | 2031 | |
d3ce72d0 | 2032 | if (new_symbol == NULL) |
c8e7bf0d | 2033 | return NULL; |
d3ce72d0 | 2034 | new_symbol->symbol.section = 0; |
a5c71af8 | 2035 | new_symbol->native = NULL; |
d3ce72d0 NC |
2036 | new_symbol->lineno = NULL; |
2037 | new_symbol->done_lineno = FALSE; | |
2038 | new_symbol->symbol.the_bfd = abfd; | |
c8e7bf0d | 2039 | |
d3ce72d0 | 2040 | return & new_symbol->symbol; |
252b5132 RH |
2041 | } |
2042 | ||
2043 | /* Make a debugging symbol. */ | |
2044 | ||
2045 | asymbol * | |
c8e7bf0d NC |
2046 | coff_bfd_make_debug_symbol (bfd *abfd, |
2047 | void * ptr ATTRIBUTE_UNUSED, | |
2048 | unsigned long sz ATTRIBUTE_UNUSED) | |
252b5132 | 2049 | { |
dc810e39 | 2050 | bfd_size_type amt = sizeof (coff_symbol_type); |
d3ce72d0 | 2051 | coff_symbol_type *new_symbol = (coff_symbol_type *) bfd_alloc (abfd, amt); |
c8e7bf0d | 2052 | |
d3ce72d0 | 2053 | if (new_symbol == NULL) |
c8e7bf0d | 2054 | return NULL; |
252b5132 RH |
2055 | /* @@ The 10 is a guess at a plausible maximum number of aux entries |
2056 | (but shouldn't be a constant). */ | |
dc810e39 | 2057 | amt = sizeof (combined_entry_type) * 10; |
d3ce72d0 NC |
2058 | new_symbol->native = (combined_entry_type *) bfd_zalloc (abfd, amt); |
2059 | if (!new_symbol->native) | |
c8e7bf0d | 2060 | return NULL; |
a5c71af8 | 2061 | new_symbol->native->is_sym = TRUE; |
d3ce72d0 NC |
2062 | new_symbol->symbol.section = bfd_abs_section_ptr; |
2063 | new_symbol->symbol.flags = BSF_DEBUGGING; | |
2064 | new_symbol->lineno = NULL; | |
2065 | new_symbol->done_lineno = FALSE; | |
2066 | new_symbol->symbol.the_bfd = abfd; | |
68ffbac6 | 2067 | |
d3ce72d0 | 2068 | return & new_symbol->symbol; |
252b5132 RH |
2069 | } |
2070 | ||
252b5132 | 2071 | void |
c8e7bf0d | 2072 | coff_get_symbol_info (bfd *abfd, asymbol *symbol, symbol_info *ret) |
252b5132 RH |
2073 | { |
2074 | bfd_symbol_info (symbol, ret); | |
c8e7bf0d | 2075 | |
252b5132 | 2076 | if (coffsymbol (symbol)->native != NULL |
a5c71af8 NC |
2077 | && coffsymbol (symbol)->native->fix_value |
2078 | && coffsymbol (symbol)->native->is_sym) | |
c8e7bf0d | 2079 | ret->value = coffsymbol (symbol)->native->u.syment.n_value - |
d2df793a | 2080 | (bfd_hostptr_t) obj_raw_syments (abfd); |
252b5132 RH |
2081 | } |
2082 | ||
252b5132 RH |
2083 | /* Print out information about COFF symbol. */ |
2084 | ||
2085 | void | |
c8e7bf0d NC |
2086 | coff_print_symbol (bfd *abfd, |
2087 | void * filep, | |
2088 | asymbol *symbol, | |
2089 | bfd_print_symbol_type how) | |
252b5132 | 2090 | { |
c8e7bf0d | 2091 | FILE * file = (FILE *) filep; |
252b5132 RH |
2092 | |
2093 | switch (how) | |
2094 | { | |
2095 | case bfd_print_symbol_name: | |
2096 | fprintf (file, "%s", symbol->name); | |
2097 | break; | |
2098 | ||
2099 | case bfd_print_symbol_more: | |
2100 | fprintf (file, "coff %s %s", | |
2101 | coffsymbol (symbol)->native ? "n" : "g", | |
2102 | coffsymbol (symbol)->lineno ? "l" : " "); | |
2103 | break; | |
2104 | ||
2105 | case bfd_print_symbol_all: | |
2106 | if (coffsymbol (symbol)->native) | |
2107 | { | |
beb1bf64 | 2108 | bfd_vma val; |
252b5132 RH |
2109 | unsigned int aux; |
2110 | combined_entry_type *combined = coffsymbol (symbol)->native; | |
2111 | combined_entry_type *root = obj_raw_syments (abfd); | |
2112 | struct lineno_cache_entry *l = coffsymbol (symbol)->lineno; | |
2113 | ||
2114 | fprintf (file, "[%3ld]", (long) (combined - root)); | |
2115 | ||
f41e4712 NC |
2116 | /* PR 17512: file: 079-33786-0.001:0.1. */ |
2117 | if (combined < obj_raw_syments (abfd) | |
2118 | || combined >= obj_raw_syments (abfd) + obj_raw_syment_count (abfd)) | |
2119 | { | |
2120 | fprintf (file, _("<corrupt info> %s"), symbol->name); | |
2121 | break; | |
2122 | } | |
2123 | ||
a5c71af8 | 2124 | BFD_ASSERT (combined->is_sym); |
252b5132 | 2125 | if (! combined->fix_value) |
beb1bf64 | 2126 | val = (bfd_vma) combined->u.syment.n_value; |
252b5132 | 2127 | else |
d2df793a | 2128 | val = combined->u.syment.n_value - (bfd_hostptr_t) root; |
252b5132 | 2129 | |
7920ce38 | 2130 | fprintf (file, "(sec %2d)(fl 0x%02x)(ty %3x)(scl %3d) (nx %d) 0x", |
252b5132 RH |
2131 | combined->u.syment.n_scnum, |
2132 | combined->u.syment.n_flags, | |
2133 | combined->u.syment.n_type, | |
2134 | combined->u.syment.n_sclass, | |
745c12f8 | 2135 | combined->u.syment.n_numaux); |
ebf12fbe | 2136 | bfd_fprintf_vma (abfd, file, val); |
745c12f8 | 2137 | fprintf (file, " %s", symbol->name); |
252b5132 RH |
2138 | |
2139 | for (aux = 0; aux < combined->u.syment.n_numaux; aux++) | |
2140 | { | |
2141 | combined_entry_type *auxp = combined + aux + 1; | |
2142 | long tagndx; | |
2143 | ||
a5c71af8 | 2144 | BFD_ASSERT (! auxp->is_sym); |
252b5132 RH |
2145 | if (auxp->fix_tag) |
2146 | tagndx = auxp->u.auxent.x_sym.x_tagndx.p - root; | |
2147 | else | |
2148 | tagndx = auxp->u.auxent.x_sym.x_tagndx.l; | |
2149 | ||
2150 | fprintf (file, "\n"); | |
2151 | ||
2152 | if (bfd_coff_print_aux (abfd, file, root, combined, auxp, aux)) | |
2153 | continue; | |
2154 | ||
2155 | switch (combined->u.syment.n_sclass) | |
2156 | { | |
2157 | case C_FILE: | |
2158 | fprintf (file, "File "); | |
2159 | break; | |
2160 | ||
2161 | case C_STAT: | |
2162 | if (combined->u.syment.n_type == T_NULL) | |
c8e7bf0d | 2163 | /* Probably a section symbol ? */ |
252b5132 RH |
2164 | { |
2165 | fprintf (file, "AUX scnlen 0x%lx nreloc %d nlnno %d", | |
0af1713e | 2166 | (unsigned long) auxp->u.auxent.x_scn.x_scnlen, |
252b5132 RH |
2167 | auxp->u.auxent.x_scn.x_nreloc, |
2168 | auxp->u.auxent.x_scn.x_nlinno); | |
2169 | if (auxp->u.auxent.x_scn.x_checksum != 0 | |
2170 | || auxp->u.auxent.x_scn.x_associated != 0 | |
2171 | || auxp->u.auxent.x_scn.x_comdat != 0) | |
2172 | fprintf (file, " checksum 0x%lx assoc %d comdat %d", | |
2173 | auxp->u.auxent.x_scn.x_checksum, | |
2174 | auxp->u.auxent.x_scn.x_associated, | |
2175 | auxp->u.auxent.x_scn.x_comdat); | |
2176 | break; | |
2177 | } | |
1a0670f3 | 2178 | /* Fall through. */ |
312191a6 | 2179 | case C_EXT: |
8602d4fe | 2180 | case C_AIX_WEAKEXT: |
312191a6 ILT |
2181 | if (ISFCN (combined->u.syment.n_type)) |
2182 | { | |
cea4409c AM |
2183 | long next, llnos; |
2184 | ||
2185 | if (auxp->fix_end) | |
2186 | next = (auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p | |
2187 | - root); | |
2188 | else | |
2189 | next = auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l; | |
2190 | llnos = auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
312191a6 | 2191 | fprintf (file, |
3d66c4f7 | 2192 | "AUX tagndx %ld ttlsiz 0x%lx lnnos %ld next %ld", |
0af1713e AM |
2193 | tagndx, |
2194 | (unsigned long) auxp->u.auxent.x_sym.x_misc.x_fsize, | |
cea4409c | 2195 | llnos, next); |
312191a6 ILT |
2196 | break; |
2197 | } | |
1a0670f3 | 2198 | /* Fall through. */ |
252b5132 RH |
2199 | default: |
2200 | fprintf (file, "AUX lnno %d size 0x%x tagndx %ld", | |
2201 | auxp->u.auxent.x_sym.x_misc.x_lnsz.x_lnno, | |
2202 | auxp->u.auxent.x_sym.x_misc.x_lnsz.x_size, | |
2203 | tagndx); | |
2204 | if (auxp->fix_end) | |
2205 | fprintf (file, " endndx %ld", | |
2206 | ((long) | |
2207 | (auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p | |
2208 | - root))); | |
2209 | break; | |
2210 | } | |
2211 | } | |
2212 | ||
2213 | if (l) | |
2214 | { | |
2215 | fprintf (file, "\n%s :", l->u.sym->name); | |
2216 | l++; | |
2217 | while (l->line_number) | |
2218 | { | |
f41e4712 NC |
2219 | if (l->line_number > 0) |
2220 | { | |
2221 | fprintf (file, "\n%4d : ", l->line_number); | |
2222 | bfd_fprintf_vma (abfd, file, l->u.offset + symbol->section->vma); | |
2223 | } | |
252b5132 RH |
2224 | l++; |
2225 | } | |
2226 | } | |
2227 | } | |
2228 | else | |
2229 | { | |
c8e7bf0d | 2230 | bfd_print_symbol_vandf (abfd, (void *) file, symbol); |
252b5132 RH |
2231 | fprintf (file, " %-5s %s %s %s", |
2232 | symbol->section->name, | |
2233 | coffsymbol (symbol)->native ? "n" : "g", | |
2234 | coffsymbol (symbol)->lineno ? "l" : " ", | |
2235 | symbol->name); | |
2236 | } | |
2237 | } | |
2238 | } | |
2239 | ||
2240 | /* Return whether a symbol name implies a local symbol. In COFF, | |
2241 | local symbols generally start with ``.L''. Most targets use this | |
2242 | function for the is_local_label_name entry point, but some may | |
2243 | override it. */ | |
2244 | ||
b34976b6 | 2245 | bfd_boolean |
c8e7bf0d NC |
2246 | _bfd_coff_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, |
2247 | const char *name) | |
252b5132 | 2248 | { |
b34976b6 | 2249 | return name[0] == '.' && name[1] == 'L'; |
252b5132 RH |
2250 | } |
2251 | ||
9a968f43 NC |
2252 | /* Provided a BFD, a section and an offset (in bytes, not octets) into the |
2253 | section, calculate and return the name of the source file and the line | |
2254 | nearest to the wanted location. */ | |
435b1e90 | 2255 | |
b34976b6 | 2256 | bfd_boolean |
fc28f9aa | 2257 | coff_find_nearest_line_with_names (bfd *abfd, |
07d6d2b8 AM |
2258 | asymbol **symbols, |
2259 | asection *section, | |
2260 | bfd_vma offset, | |
2261 | const char **filename_ptr, | |
2262 | const char **functionname_ptr, | |
2263 | unsigned int *line_ptr, | |
2264 | const struct dwarf_debug_section *debug_sections) | |
252b5132 | 2265 | { |
b34976b6 | 2266 | bfd_boolean found; |
252b5132 RH |
2267 | unsigned int i; |
2268 | unsigned int line_base; | |
2269 | coff_data_type *cof = coff_data (abfd); | |
c8e7bf0d | 2270 | /* Run through the raw syments if available. */ |
252b5132 RH |
2271 | combined_entry_type *p; |
2272 | combined_entry_type *pend; | |
2273 | alent *l; | |
2274 | struct coff_section_tdata *sec_data; | |
dc810e39 | 2275 | bfd_size_type amt; |
252b5132 RH |
2276 | |
2277 | /* Before looking through the symbol table, try to use a .stab | |
2278 | section to find the information. */ | |
2279 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
2280 | &found, filename_ptr, | |
2281 | functionname_ptr, line_ptr, | |
51db3708 | 2282 | &coff_data(abfd)->line_info)) |
b34976b6 | 2283 | return FALSE; |
51db3708 | 2284 | |
4ca29a6a | 2285 | if (found) |
b34976b6 | 2286 | return TRUE; |
4ca29a6a | 2287 | |
51db3708 | 2288 | /* Also try examining DWARF2 debugging information. */ |
fb167eb2 | 2289 | if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset, |
51db3708 | 2290 | filename_ptr, functionname_ptr, |
9defd221 | 2291 | line_ptr, NULL, debug_sections, |
51db3708 | 2292 | &coff_data(abfd)->dwarf2_find_line_info)) |
b34976b6 | 2293 | return TRUE; |
51db3708 | 2294 | |
e643cb45 NC |
2295 | sec_data = coff_section_data (abfd, section); |
2296 | ||
425bd9e1 NC |
2297 | /* If the DWARF lookup failed, but there is DWARF information available |
2298 | then the problem might be that the file has been rebased. This tool | |
2299 | changes the VMAs of all the sections, but it does not update the DWARF | |
2300 | information. So try again, using a bias against the address sought. */ | |
2301 | if (coff_data (abfd)->dwarf2_find_line_info != NULL) | |
2302 | { | |
219d6836 | 2303 | bfd_signed_vma bias = 0; |
425bd9e1 | 2304 | |
e643cb45 NC |
2305 | /* Create a cache of the result for the next call. */ |
2306 | if (sec_data == NULL && section->owner == abfd) | |
2307 | { | |
2308 | amt = sizeof (struct coff_section_tdata); | |
2309 | section->used_by_bfd = bfd_zalloc (abfd, amt); | |
2310 | sec_data = (struct coff_section_tdata *) section->used_by_bfd; | |
2311 | } | |
2312 | ||
2313 | if (sec_data != NULL && sec_data->saved_bias) | |
2314 | bias = sec_data->saved_bias; | |
219d6836 | 2315 | else if (symbols) |
e643cb45 NC |
2316 | { |
2317 | bias = _bfd_dwarf2_find_symbol_bias (symbols, | |
2318 | & coff_data (abfd)->dwarf2_find_line_info); | |
219d6836 | 2319 | |
e643cb45 NC |
2320 | if (sec_data) |
2321 | { | |
2322 | sec_data->saved_bias = TRUE; | |
2323 | sec_data->bias = bias; | |
2324 | } | |
2325 | } | |
1b786873 | 2326 | |
425bd9e1 NC |
2327 | if (bias |
2328 | && _bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, | |
2329 | offset + bias, | |
2330 | filename_ptr, functionname_ptr, | |
9defd221 | 2331 | line_ptr, NULL, debug_sections, |
425bd9e1 NC |
2332 | &coff_data(abfd)->dwarf2_find_line_info)) |
2333 | return TRUE; | |
2334 | } | |
2335 | ||
252b5132 RH |
2336 | *filename_ptr = 0; |
2337 | *functionname_ptr = 0; | |
2338 | *line_ptr = 0; | |
2339 | ||
c8e7bf0d | 2340 | /* Don't try and find line numbers in a non coff file. */ |
9bd09e22 | 2341 | if (!bfd_family_coff (abfd)) |
b34976b6 | 2342 | return FALSE; |
252b5132 RH |
2343 | |
2344 | if (cof == NULL) | |
b34976b6 | 2345 | return FALSE; |
252b5132 RH |
2346 | |
2347 | /* Find the first C_FILE symbol. */ | |
2348 | p = cof->raw_syments; | |
2349 | if (!p) | |
b34976b6 | 2350 | return FALSE; |
252b5132 RH |
2351 | |
2352 | pend = p + cof->raw_syment_count; | |
2353 | while (p < pend) | |
2354 | { | |
a5c71af8 | 2355 | BFD_ASSERT (p->is_sym); |
252b5132 RH |
2356 | if (p->u.syment.n_sclass == C_FILE) |
2357 | break; | |
2358 | p += 1 + p->u.syment.n_numaux; | |
2359 | } | |
2360 | ||
2361 | if (p < pend) | |
2362 | { | |
2363 | bfd_vma sec_vma; | |
2364 | bfd_vma maxdiff; | |
2365 | ||
2366 | /* Look through the C_FILE symbols to find the best one. */ | |
fd361982 | 2367 | sec_vma = bfd_section_vma (section); |
252b5132 RH |
2368 | *filename_ptr = (char *) p->u.syment._n._n_n._n_offset; |
2369 | maxdiff = (bfd_vma) 0 - (bfd_vma) 1; | |
2370 | while (1) | |
2371 | { | |
4d9e2b27 | 2372 | bfd_vma file_addr; |
252b5132 RH |
2373 | combined_entry_type *p2; |
2374 | ||
2375 | for (p2 = p + 1 + p->u.syment.n_numaux; | |
2376 | p2 < pend; | |
2377 | p2 += 1 + p2->u.syment.n_numaux) | |
2378 | { | |
a5c71af8 | 2379 | BFD_ASSERT (p2->is_sym); |
252b5132 RH |
2380 | if (p2->u.syment.n_scnum > 0 |
2381 | && (section | |
2382 | == coff_section_from_bfd_index (abfd, | |
2383 | p2->u.syment.n_scnum))) | |
2384 | break; | |
2385 | if (p2->u.syment.n_sclass == C_FILE) | |
2386 | { | |
2387 | p2 = pend; | |
2388 | break; | |
2389 | } | |
2390 | } | |
a5c71af8 NC |
2391 | if (p2 >= pend) |
2392 | break; | |
252b5132 | 2393 | |
4d9e2b27 NC |
2394 | file_addr = (bfd_vma) p2->u.syment.n_value; |
2395 | /* PR 11512: Include the section address of the function name symbol. */ | |
2396 | if (p2->u.syment.n_scnum > 0) | |
2397 | file_addr += coff_section_from_bfd_index (abfd, | |
2398 | p2->u.syment.n_scnum)->vma; | |
798c1fb8 | 2399 | /* We use <= MAXDIFF here so that if we get a zero length |
07d6d2b8 | 2400 | file, we actually use the next file entry. */ |
252b5132 | 2401 | if (p2 < pend |
4d9e2b27 NC |
2402 | && offset + sec_vma >= file_addr |
2403 | && offset + sec_vma - file_addr <= maxdiff) | |
252b5132 RH |
2404 | { |
2405 | *filename_ptr = (char *) p->u.syment._n._n_n._n_offset; | |
2406 | maxdiff = offset + sec_vma - p2->u.syment.n_value; | |
2407 | } | |
2408 | ||
f14080d4 AM |
2409 | if (p->u.syment.n_value >= cof->raw_syment_count) |
2410 | break; | |
2411 | ||
252b5132 RH |
2412 | /* Avoid endless loops on erroneous files by ensuring that |
2413 | we always move forward in the file. */ | |
cea4409c | 2414 | if (p >= cof->raw_syments + p->u.syment.n_value) |
252b5132 RH |
2415 | break; |
2416 | ||
2417 | p = cof->raw_syments + p->u.syment.n_value; | |
f14080d4 | 2418 | if (!p->is_sym || p->u.syment.n_sclass != C_FILE) |
252b5132 RH |
2419 | break; |
2420 | } | |
2421 | } | |
2422 | ||
e643cb45 NC |
2423 | if (section->lineno_count == 0) |
2424 | { | |
2425 | *functionname_ptr = NULL; | |
2426 | *line_ptr = 0; | |
2427 | return TRUE; | |
2428 | } | |
2429 | ||
2430 | /* Now wander though the raw linenumbers of the section. | |
2431 | If we have been called on this section before, and the offset | |
2432 | we want is further down then we can prime the lookup loop. */ | |
252b5132 RH |
2433 | if (sec_data != NULL |
2434 | && sec_data->i > 0 | |
2435 | && offset >= sec_data->offset) | |
2436 | { | |
2437 | i = sec_data->i; | |
2438 | *functionname_ptr = sec_data->function; | |
2439 | line_base = sec_data->line_base; | |
2440 | } | |
2441 | else | |
2442 | { | |
2443 | i = 0; | |
2444 | line_base = 0; | |
2445 | } | |
2446 | ||
2447 | if (section->lineno != NULL) | |
2448 | { | |
798c1fb8 ILT |
2449 | bfd_vma last_value = 0; |
2450 | ||
252b5132 RH |
2451 | l = §ion->lineno[i]; |
2452 | ||
2453 | for (; i < section->lineno_count; i++) | |
2454 | { | |
2455 | if (l->line_number == 0) | |
2456 | { | |
c8e7bf0d | 2457 | /* Get the symbol this line number points at. */ |
252b5132 RH |
2458 | coff_symbol_type *coff = (coff_symbol_type *) (l->u.sym); |
2459 | if (coff->symbol.value > offset) | |
2460 | break; | |
e643cb45 | 2461 | |
252b5132 | 2462 | *functionname_ptr = coff->symbol.name; |
798c1fb8 | 2463 | last_value = coff->symbol.value; |
252b5132 RH |
2464 | if (coff->native) |
2465 | { | |
2466 | combined_entry_type *s = coff->native; | |
a5c71af8 NC |
2467 | |
2468 | BFD_ASSERT (s->is_sym); | |
252b5132 RH |
2469 | s = s + 1 + s->u.syment.n_numaux; |
2470 | ||
2471 | /* In XCOFF a debugging symbol can follow the | |
2472 | function symbol. */ | |
2473 | if (s->u.syment.n_scnum == N_DEBUG) | |
2474 | s = s + 1 + s->u.syment.n_numaux; | |
2475 | ||
2476 | /* S should now point to the .bf of the function. */ | |
2477 | if (s->u.syment.n_numaux) | |
2478 | { | |
2479 | /* The linenumber is stored in the auxent. */ | |
2480 | union internal_auxent *a = &((s + 1)->u.auxent); | |
a5c71af8 | 2481 | |
252b5132 RH |
2482 | line_base = a->x_sym.x_misc.x_lnsz.x_lnno; |
2483 | *line_ptr = line_base; | |
2484 | } | |
2485 | } | |
2486 | } | |
2487 | else | |
2488 | { | |
2489 | if (l->u.offset > offset) | |
2490 | break; | |
2491 | *line_ptr = l->line_number + line_base - 1; | |
2492 | } | |
2493 | l++; | |
2494 | } | |
798c1fb8 ILT |
2495 | |
2496 | /* If we fell off the end of the loop, then assume that this | |
2497 | symbol has no line number info. Otherwise, symbols with no | |
2498 | line number info get reported with the line number of the | |
2499 | last line of the last symbol which does have line number | |
2500 | info. We use 0x100 as a slop to account for cases where the | |
2501 | last line has executable code. */ | |
2502 | if (i >= section->lineno_count | |
2503 | && last_value != 0 | |
2504 | && offset - last_value > 0x100) | |
2505 | { | |
2506 | *functionname_ptr = NULL; | |
2507 | *line_ptr = 0; | |
2508 | } | |
252b5132 RH |
2509 | } |
2510 | ||
2511 | /* Cache the results for the next call. */ | |
2512 | if (sec_data == NULL && section->owner == abfd) | |
2513 | { | |
dc810e39 | 2514 | amt = sizeof (struct coff_section_tdata); |
c8e7bf0d | 2515 | section->used_by_bfd = bfd_zalloc (abfd, amt); |
252b5132 RH |
2516 | sec_data = (struct coff_section_tdata *) section->used_by_bfd; |
2517 | } | |
e643cb45 | 2518 | |
252b5132 RH |
2519 | if (sec_data != NULL) |
2520 | { | |
2521 | sec_data->offset = offset; | |
70df0c05 | 2522 | sec_data->i = i - 1; |
252b5132 RH |
2523 | sec_data->function = *functionname_ptr; |
2524 | sec_data->line_base = line_base; | |
2525 | } | |
2526 | ||
b34976b6 | 2527 | return TRUE; |
252b5132 RH |
2528 | } |
2529 | ||
fc28f9aa TG |
2530 | bfd_boolean |
2531 | coff_find_nearest_line (bfd *abfd, | |
fc28f9aa | 2532 | asymbol **symbols, |
fb167eb2 | 2533 | asection *section, |
fc28f9aa TG |
2534 | bfd_vma offset, |
2535 | const char **filename_ptr, | |
2536 | const char **functionname_ptr, | |
fb167eb2 AM |
2537 | unsigned int *line_ptr, |
2538 | unsigned int *discriminator_ptr) | |
fc28f9aa | 2539 | { |
fb167eb2 AM |
2540 | if (discriminator_ptr) |
2541 | *discriminator_ptr = 0; | |
2542 | return coff_find_nearest_line_with_names (abfd, symbols, section, offset, | |
07d6d2b8 AM |
2543 | filename_ptr, functionname_ptr, |
2544 | line_ptr, dwarf_debug_sections); | |
fc28f9aa TG |
2545 | } |
2546 | ||
4ab527b0 FF |
2547 | bfd_boolean |
2548 | coff_find_inliner_info (bfd *abfd, | |
2549 | const char **filename_ptr, | |
2550 | const char **functionname_ptr, | |
2551 | unsigned int *line_ptr) | |
2552 | { | |
2553 | bfd_boolean found; | |
2554 | ||
2555 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
2556 | functionname_ptr, line_ptr, | |
2557 | &coff_data(abfd)->dwarf2_find_line_info); | |
2558 | return (found); | |
2559 | } | |
2560 | ||
252b5132 | 2561 | int |
a6b96beb | 2562 | coff_sizeof_headers (bfd *abfd, struct bfd_link_info *info) |
252b5132 RH |
2563 | { |
2564 | size_t size; | |
2565 | ||
0e1862bb | 2566 | if (!bfd_link_relocatable (info)) |
c8e7bf0d | 2567 | size = bfd_coff_filhsz (abfd) + bfd_coff_aoutsz (abfd); |
252b5132 | 2568 | else |
c8e7bf0d | 2569 | size = bfd_coff_filhsz (abfd); |
252b5132 RH |
2570 | |
2571 | size += abfd->section_count * bfd_coff_scnhsz (abfd); | |
2572 | return size; | |
2573 | } | |
2574 | ||
2575 | /* Change the class of a coff symbol held by BFD. */ | |
c8e7bf0d | 2576 | |
b34976b6 | 2577 | bfd_boolean |
07d6d2b8 AM |
2578 | bfd_coff_set_symbol_class (bfd * abfd, |
2579 | asymbol * symbol, | |
2580 | unsigned int symbol_class) | |
252b5132 RH |
2581 | { |
2582 | coff_symbol_type * csym; | |
2583 | ||
f4943d82 | 2584 | csym = coff_symbol_from (symbol); |
252b5132 RH |
2585 | if (csym == NULL) |
2586 | { | |
2587 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 2588 | return FALSE; |
252b5132 RH |
2589 | } |
2590 | else if (csym->native == NULL) | |
2591 | { | |
2592 | /* This is an alien symbol which no native coff backend data. | |
2593 | We cheat here by creating a fake native entry for it and | |
2594 | then filling in the class. This code is based on that in | |
2595 | coff_write_alien_symbol(). */ | |
244148ad | 2596 | |
252b5132 | 2597 | combined_entry_type * native; |
dc810e39 | 2598 | bfd_size_type amt = sizeof (* native); |
252b5132 | 2599 | |
a50b1753 | 2600 | native = (combined_entry_type *) bfd_zalloc (abfd, amt); |
252b5132 | 2601 | if (native == NULL) |
b34976b6 | 2602 | return FALSE; |
252b5132 | 2603 | |
a5c71af8 | 2604 | native->is_sym = TRUE; |
252b5132 | 2605 | native->u.syment.n_type = T_NULL; |
96d56e9f | 2606 | native->u.syment.n_sclass = symbol_class; |
244148ad | 2607 | |
252b5132 RH |
2608 | if (bfd_is_und_section (symbol->section)) |
2609 | { | |
2610 | native->u.syment.n_scnum = N_UNDEF; | |
2611 | native->u.syment.n_value = symbol->value; | |
2612 | } | |
2613 | else if (bfd_is_com_section (symbol->section)) | |
2614 | { | |
2615 | native->u.syment.n_scnum = N_UNDEF; | |
2616 | native->u.syment.n_value = symbol->value; | |
2617 | } | |
2618 | else | |
2619 | { | |
2620 | native->u.syment.n_scnum = | |
2621 | symbol->section->output_section->target_index; | |
2622 | native->u.syment.n_value = (symbol->value | |
2623 | + symbol->section->output_offset); | |
2624 | if (! obj_pe (abfd)) | |
2625 | native->u.syment.n_value += symbol->section->output_section->vma; | |
244148ad | 2626 | |
08da05b0 | 2627 | /* Copy the any flags from the file header into the symbol. |
252b5132 RH |
2628 | FIXME: Why? */ |
2629 | native->u.syment.n_flags = bfd_asymbol_bfd (& csym->symbol)->flags; | |
2630 | } | |
244148ad | 2631 | |
252b5132 RH |
2632 | csym->native = native; |
2633 | } | |
2634 | else | |
96d56e9f | 2635 | csym->native->u.syment.n_sclass = symbol_class; |
244148ad | 2636 | |
b34976b6 | 2637 | return TRUE; |
252b5132 | 2638 | } |
082b7297 | 2639 | |
c77ec726 AM |
2640 | bfd_boolean |
2641 | _bfd_coff_section_already_linked (bfd *abfd, | |
2642 | asection *sec, | |
2643 | struct bfd_link_info *info) | |
2644 | { | |
2645 | flagword flags; | |
2646 | const char *name, *key; | |
2647 | struct bfd_section_already_linked *l; | |
2648 | struct bfd_section_already_linked_hash_entry *already_linked_list; | |
2649 | struct coff_comdat_info *s_comdat; | |
2650 | ||
2219ae0b L |
2651 | if (sec->output_section == bfd_abs_section_ptr) |
2652 | return FALSE; | |
2653 | ||
c77ec726 AM |
2654 | flags = sec->flags; |
2655 | if ((flags & SEC_LINK_ONCE) == 0) | |
2656 | return FALSE; | |
2657 | ||
2658 | /* The COFF backend linker doesn't support group sections. */ | |
2659 | if ((flags & SEC_GROUP) != 0) | |
2660 | return FALSE; | |
2661 | ||
fd361982 | 2662 | name = bfd_section_name (sec); |
c77ec726 AM |
2663 | s_comdat = bfd_coff_get_comdat_section (abfd, sec); |
2664 | ||
2665 | if (s_comdat != NULL) | |
2666 | key = s_comdat->name; | |
2667 | else | |
2668 | { | |
2669 | if (CONST_STRNEQ (name, ".gnu.linkonce.") | |
2670 | && (key = strchr (name + sizeof (".gnu.linkonce.") - 1, '.')) != NULL) | |
2671 | key++; | |
2672 | else | |
2673 | /* FIXME: gcc as of 2011-09 emits sections like .text$<key>, | |
2674 | .xdata$<key> and .pdata$<key> only the first of which has a | |
2675 | comdat key. Should these all match the LTO IR key? */ | |
2676 | key = name; | |
2677 | } | |
2678 | ||
2679 | already_linked_list = bfd_section_already_linked_table_lookup (key); | |
2680 | ||
2681 | for (l = already_linked_list->entry; l != NULL; l = l->next) | |
2682 | { | |
2683 | struct coff_comdat_info *l_comdat; | |
2684 | ||
2685 | l_comdat = bfd_coff_get_comdat_section (l->sec->owner, l->sec); | |
2686 | ||
2687 | /* The section names must match, and both sections must be | |
2688 | comdat and have the same comdat name, or both sections must | |
2689 | be non-comdat. LTO IR plugin sections are an exception. They | |
2690 | are always named .gnu.linkonce.t.<key> (<key> is some string) | |
2691 | and match any comdat section with comdat name of <key>, and | |
2692 | any linkonce section with the same suffix, ie. | |
2693 | .gnu.linkonce.*.<key>. */ | |
2694 | if (((s_comdat != NULL) == (l_comdat != NULL) | |
2695 | && strcmp (name, l->sec->name) == 0) | |
2696 | || (l->sec->owner->flags & BFD_PLUGIN) != 0) | |
2697 | { | |
2698 | /* The section has already been linked. See if we should | |
2699 | issue a warning. */ | |
2700 | return _bfd_handle_already_linked (sec, l, info); | |
2701 | } | |
2702 | } | |
2703 | ||
2704 | /* This is the first section with this name. Record it. */ | |
2705 | if (!bfd_section_already_linked_table_insert (already_linked_list, sec)) | |
2706 | info->callbacks->einfo (_("%F%P: already_linked_table: %E\n")); | |
2707 | return FALSE; | |
2708 | } | |
0f088b2a KT |
2709 | |
2710 | /* Initialize COOKIE for input bfd ABFD. */ | |
2711 | ||
2712 | static bfd_boolean | |
2713 | init_reloc_cookie (struct coff_reloc_cookie *cookie, | |
2714 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
2715 | bfd *abfd) | |
2716 | { | |
2717 | /* Sometimes the symbol table does not yet have been loaded here. */ | |
2718 | bfd_coff_slurp_symbol_table (abfd); | |
2719 | ||
2720 | cookie->abfd = abfd; | |
2721 | cookie->sym_hashes = obj_coff_sym_hashes (abfd); | |
2722 | ||
2723 | cookie->symbols = obj_symbols (abfd); | |
2724 | ||
2725 | return TRUE; | |
2726 | } | |
2727 | ||
2728 | /* Free the memory allocated by init_reloc_cookie, if appropriate. */ | |
2729 | ||
2730 | static void | |
2731 | fini_reloc_cookie (struct coff_reloc_cookie *cookie ATTRIBUTE_UNUSED, | |
2732 | bfd *abfd ATTRIBUTE_UNUSED) | |
2733 | { | |
2734 | /* Nothing to do. */ | |
2735 | } | |
2736 | ||
2737 | /* Initialize the relocation information in COOKIE for input section SEC | |
2738 | of input bfd ABFD. */ | |
2739 | ||
2740 | static bfd_boolean | |
2741 | init_reloc_cookie_rels (struct coff_reloc_cookie *cookie, | |
2742 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
2743 | bfd *abfd, | |
2744 | asection *sec) | |
2745 | { | |
2746 | if (sec->reloc_count == 0) | |
2747 | { | |
2748 | cookie->rels = NULL; | |
2749 | cookie->relend = NULL; | |
2750 | cookie->rel = NULL; | |
2751 | return TRUE; | |
2752 | } | |
2753 | ||
2754 | cookie->rels = _bfd_coff_read_internal_relocs (abfd, sec, FALSE, NULL, 0, NULL); | |
2755 | ||
2756 | if (cookie->rels == NULL) | |
2757 | return FALSE; | |
2758 | ||
2759 | cookie->rel = cookie->rels; | |
2760 | cookie->relend = (cookie->rels + sec->reloc_count); | |
2761 | return TRUE; | |
2762 | } | |
2763 | ||
2764 | /* Free the memory allocated by init_reloc_cookie_rels, | |
2765 | if appropriate. */ | |
2766 | ||
2767 | static void | |
2768 | fini_reloc_cookie_rels (struct coff_reloc_cookie *cookie, | |
2769 | asection *sec) | |
2770 | { | |
147d994b NC |
2771 | if (cookie->rels |
2772 | /* PR 20401. The relocs may not have been cached, so check first. | |
2773 | If the relocs were loaded by init_reloc_cookie_rels() then this | |
2774 | will be the case. FIXME: Would performance be improved if the | |
2775 | relocs *were* cached ? */ | |
2776 | && coff_section_data (NULL, sec) | |
2777 | && coff_section_data (NULL, sec)->relocs != cookie->rels) | |
0f088b2a KT |
2778 | free (cookie->rels); |
2779 | } | |
2780 | ||
2781 | /* Initialize the whole of COOKIE for input section SEC. */ | |
2782 | ||
2783 | static bfd_boolean | |
2784 | init_reloc_cookie_for_section (struct coff_reloc_cookie *cookie, | |
2785 | struct bfd_link_info *info, | |
2786 | asection *sec) | |
2787 | { | |
2788 | if (!init_reloc_cookie (cookie, info, sec->owner)) | |
2789 | return FALSE; | |
2790 | ||
2791 | if (!init_reloc_cookie_rels (cookie, info, sec->owner, sec)) | |
2792 | { | |
2793 | fini_reloc_cookie (cookie, sec->owner); | |
2794 | return FALSE; | |
2795 | } | |
2796 | return TRUE; | |
2797 | } | |
2798 | ||
2799 | /* Free the memory allocated by init_reloc_cookie_for_section, | |
2800 | if appropriate. */ | |
2801 | ||
2802 | static void | |
2803 | fini_reloc_cookie_for_section (struct coff_reloc_cookie *cookie, | |
2804 | asection *sec) | |
2805 | { | |
2806 | fini_reloc_cookie_rels (cookie, sec); | |
2807 | fini_reloc_cookie (cookie, sec->owner); | |
2808 | } | |
2809 | ||
2810 | static asection * | |
2811 | _bfd_coff_gc_mark_hook (asection *sec, | |
2812 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
2813 | struct internal_reloc *rel ATTRIBUTE_UNUSED, | |
2814 | struct coff_link_hash_entry *h, | |
2815 | struct internal_syment *sym) | |
2816 | { | |
2817 | if (h != NULL) | |
2818 | { | |
2819 | switch (h->root.type) | |
07d6d2b8 AM |
2820 | { |
2821 | case bfd_link_hash_defined: | |
2822 | case bfd_link_hash_defweak: | |
2823 | return h->root.u.def.section; | |
0f088b2a | 2824 | |
07d6d2b8 AM |
2825 | case bfd_link_hash_common: |
2826 | return h->root.u.c.p->section; | |
0f088b2a | 2827 | |
0f088b2a | 2828 | case bfd_link_hash_undefweak: |
1fd6d111 TG |
2829 | if (h->symbol_class == C_NT_WEAK && h->numaux == 1) |
2830 | { | |
2831 | /* PE weak externals. A weak symbol may include an auxiliary | |
2832 | record indicating that if the weak symbol is not resolved, | |
2833 | another external symbol is used instead. */ | |
2834 | struct coff_link_hash_entry *h2 = | |
2835 | h->auxbfd->tdata.coff_obj_data->sym_hashes[ | |
2836 | h->aux->x_sym.x_tagndx.l]; | |
2837 | ||
2838 | if (h2 && h2->root.type != bfd_link_hash_undefined) | |
2839 | return h2->root.u.def.section; | |
2840 | } | |
2841 | break; | |
2842 | ||
2843 | case bfd_link_hash_undefined: | |
07d6d2b8 AM |
2844 | default: |
2845 | break; | |
2846 | } | |
0f088b2a KT |
2847 | return NULL; |
2848 | } | |
2849 | ||
2850 | return coff_section_from_bfd_index (sec->owner, sym->n_scnum); | |
2851 | } | |
2852 | ||
2853 | /* COOKIE->rel describes a relocation against section SEC, which is | |
2854 | a section we've decided to keep. Return the section that contains | |
2855 | the relocation symbol, or NULL if no section contains it. */ | |
2856 | ||
2857 | static asection * | |
2858 | _bfd_coff_gc_mark_rsec (struct bfd_link_info *info, asection *sec, | |
2859 | coff_gc_mark_hook_fn gc_mark_hook, | |
2860 | struct coff_reloc_cookie *cookie) | |
2861 | { | |
2862 | struct coff_link_hash_entry *h; | |
2863 | ||
2864 | h = cookie->sym_hashes[cookie->rel->r_symndx]; | |
2865 | if (h != NULL) | |
2866 | { | |
2867 | while (h->root.type == bfd_link_hash_indirect | |
2868 | || h->root.type == bfd_link_hash_warning) | |
2869 | h = (struct coff_link_hash_entry *) h->root.u.i.link; | |
2870 | ||
2871 | return (*gc_mark_hook) (sec, info, cookie->rel, h, NULL); | |
2872 | } | |
2873 | ||
2874 | return (*gc_mark_hook) (sec, info, cookie->rel, NULL, | |
2875 | &(cookie->symbols | |
2876 | + obj_convert (sec->owner)[cookie->rel->r_symndx])->native->u.syment); | |
2877 | } | |
2878 | ||
2879 | static bfd_boolean _bfd_coff_gc_mark | |
2880 | (struct bfd_link_info *, asection *, coff_gc_mark_hook_fn); | |
2881 | ||
2882 | /* COOKIE->rel describes a relocation against section SEC, which is | |
2883 | a section we've decided to keep. Mark the section that contains | |
2884 | the relocation symbol. */ | |
2885 | ||
2886 | static bfd_boolean | |
2887 | _bfd_coff_gc_mark_reloc (struct bfd_link_info *info, | |
2888 | asection *sec, | |
2889 | coff_gc_mark_hook_fn gc_mark_hook, | |
2890 | struct coff_reloc_cookie *cookie) | |
2891 | { | |
2892 | asection *rsec; | |
2893 | ||
2894 | rsec = _bfd_coff_gc_mark_rsec (info, sec, gc_mark_hook, cookie); | |
2895 | if (rsec && !rsec->gc_mark) | |
2896 | { | |
2897 | if (bfd_get_flavour (rsec->owner) != bfd_target_coff_flavour) | |
2898 | rsec->gc_mark = 1; | |
2899 | else if (!_bfd_coff_gc_mark (info, rsec, gc_mark_hook)) | |
2900 | return FALSE; | |
2901 | } | |
2902 | return TRUE; | |
2903 | } | |
2904 | ||
2905 | /* The mark phase of garbage collection. For a given section, mark | |
2906 | it and any sections in this section's group, and all the sections | |
2907 | which define symbols to which it refers. */ | |
2908 | ||
2909 | static bfd_boolean | |
2910 | _bfd_coff_gc_mark (struct bfd_link_info *info, | |
2911 | asection *sec, | |
2912 | coff_gc_mark_hook_fn gc_mark_hook) | |
2913 | { | |
2914 | bfd_boolean ret = TRUE; | |
2915 | ||
2916 | sec->gc_mark = 1; | |
2917 | ||
2918 | /* Look through the section relocs. */ | |
2919 | if ((sec->flags & SEC_RELOC) != 0 | |
2920 | && sec->reloc_count > 0) | |
2921 | { | |
2922 | struct coff_reloc_cookie cookie; | |
2923 | ||
2924 | if (!init_reloc_cookie_for_section (&cookie, info, sec)) | |
07d6d2b8 | 2925 | ret = FALSE; |
0f088b2a | 2926 | else |
07d6d2b8 AM |
2927 | { |
2928 | for (; cookie.rel < cookie.relend; cookie.rel++) | |
2929 | { | |
0f088b2a KT |
2930 | if (!_bfd_coff_gc_mark_reloc (info, sec, gc_mark_hook, &cookie)) |
2931 | { | |
2932 | ret = FALSE; | |
2933 | break; | |
2934 | } | |
2935 | } | |
07d6d2b8 AM |
2936 | fini_reloc_cookie_for_section (&cookie, sec); |
2937 | } | |
0f088b2a KT |
2938 | } |
2939 | ||
2940 | return ret; | |
2941 | } | |
2942 | ||
2943 | static bfd_boolean | |
2944 | _bfd_coff_gc_mark_extra_sections (struct bfd_link_info *info, | |
2945 | coff_gc_mark_hook_fn mark_hook ATTRIBUTE_UNUSED) | |
2946 | { | |
2947 | bfd *ibfd; | |
2948 | ||
2949 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
2950 | { | |
2951 | asection *isec; | |
2952 | bfd_boolean some_kept; | |
2953 | ||
1fd6d111 | 2954 | if (bfd_get_flavour (ibfd) != bfd_target_coff_flavour) |
0f088b2a KT |
2955 | continue; |
2956 | ||
2957 | /* Ensure all linker created sections are kept, and see whether | |
2958 | any other section is already marked. */ | |
2959 | some_kept = FALSE; | |
2960 | for (isec = ibfd->sections; isec != NULL; isec = isec->next) | |
2961 | { | |
2962 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
2963 | isec->gc_mark = 1; | |
2964 | else if (isec->gc_mark) | |
2965 | some_kept = TRUE; | |
2966 | } | |
2967 | ||
2968 | /* If no section in this file will be kept, then we can | |
2969 | toss out debug sections. */ | |
2970 | if (!some_kept) | |
2971 | continue; | |
2972 | ||
2973 | /* Keep debug and special sections like .comment when they are | |
2974 | not part of a group, or when we have single-member groups. */ | |
2975 | for (isec = ibfd->sections; isec != NULL; isec = isec->next) | |
2976 | if ((isec->flags & SEC_DEBUGGING) != 0 | |
2977 | || (isec->flags & (SEC_ALLOC | SEC_LOAD | SEC_RELOC)) == 0) | |
2978 | isec->gc_mark = 1; | |
2979 | } | |
2980 | return TRUE; | |
2981 | } | |
2982 | ||
2983 | /* Sweep symbols in swept sections. Called via coff_link_hash_traverse. */ | |
2984 | ||
2985 | static bfd_boolean | |
2986 | coff_gc_sweep_symbol (struct coff_link_hash_entry *h, | |
2987 | void *data ATTRIBUTE_UNUSED) | |
2988 | { | |
2989 | if (h->root.type == bfd_link_hash_warning) | |
2990 | h = (struct coff_link_hash_entry *) h->root.u.i.link; | |
2991 | ||
2992 | if ((h->root.type == bfd_link_hash_defined | |
2993 | || h->root.type == bfd_link_hash_defweak) | |
2994 | && !h->root.u.def.section->gc_mark | |
2995 | && !(h->root.u.def.section->owner->flags & DYNAMIC)) | |
2996 | { | |
2997 | /* Do our best to hide the symbol. */ | |
2998 | h->root.u.def.section = bfd_und_section_ptr; | |
2999 | h->symbol_class = C_HIDDEN; | |
3000 | } | |
3001 | ||
3002 | return TRUE; | |
3003 | } | |
3004 | ||
3005 | /* The sweep phase of garbage collection. Remove all garbage sections. */ | |
3006 | ||
3007 | typedef bfd_boolean (*gc_sweep_hook_fn) | |
3008 | (bfd *, struct bfd_link_info *, asection *, const struct internal_reloc *); | |
3009 | ||
3010 | static bfd_boolean | |
3011 | coff_gc_sweep (bfd *abfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) | |
3012 | { | |
3013 | bfd *sub; | |
3014 | ||
3015 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) | |
3016 | { | |
3017 | asection *o; | |
3018 | ||
3019 | if (bfd_get_flavour (sub) != bfd_target_coff_flavour) | |
3020 | continue; | |
3021 | ||
3022 | for (o = sub->sections; o != NULL; o = o->next) | |
3023 | { | |
3024 | /* Keep debug and special sections. */ | |
07d6d2b8 | 3025 | if ((o->flags & (SEC_DEBUGGING | SEC_LINKER_CREATED)) != 0 |
0f088b2a KT |
3026 | || (o->flags & (SEC_ALLOC | SEC_LOAD | SEC_RELOC)) == 0) |
3027 | o->gc_mark = 1; | |
07d6d2b8 | 3028 | else if (CONST_STRNEQ (o->name, ".idata") |
0f088b2a KT |
3029 | || CONST_STRNEQ (o->name, ".pdata") |
3030 | || CONST_STRNEQ (o->name, ".xdata") | |
3031 | || CONST_STRNEQ (o->name, ".rsrc")) | |
3032 | o->gc_mark = 1; | |
3033 | ||
3034 | if (o->gc_mark) | |
3035 | continue; | |
3036 | ||
3037 | /* Skip sweeping sections already excluded. */ | |
3038 | if (o->flags & SEC_EXCLUDE) | |
3039 | continue; | |
3040 | ||
3041 | /* Since this is early in the link process, it is simple | |
3042 | to remove a section from the output. */ | |
3043 | o->flags |= SEC_EXCLUDE; | |
3044 | ||
3045 | if (info->print_gc_sections && o->size != 0) | |
695344c0 | 3046 | /* xgettext: c-format */ |
59d08d6c | 3047 | _bfd_error_handler (_("removing unused section '%pA' in file '%pB'"), |
dae82561 | 3048 | o, sub); |
0f088b2a KT |
3049 | |
3050 | #if 0 | |
3051 | /* But we also have to update some of the relocation | |
3052 | info we collected before. */ | |
3053 | if (gc_sweep_hook | |
3054 | && (o->flags & SEC_RELOC) != 0 | |
3055 | && o->reloc_count > 0 | |
3056 | && !bfd_is_abs_section (o->output_section)) | |
3057 | { | |
3058 | struct internal_reloc *internal_relocs; | |
3059 | bfd_boolean r; | |
3060 | ||
3061 | internal_relocs | |
3062 | = _bfd_coff_link_read_relocs (o->owner, o, NULL, NULL, | |
3063 | info->keep_memory); | |
3064 | if (internal_relocs == NULL) | |
3065 | return FALSE; | |
3066 | ||
3067 | r = (*gc_sweep_hook) (o->owner, info, o, internal_relocs); | |
3068 | ||
3069 | if (coff_section_data (o)->relocs != internal_relocs) | |
3070 | free (internal_relocs); | |
3071 | ||
3072 | if (!r) | |
3073 | return FALSE; | |
3074 | } | |
3075 | #endif | |
3076 | } | |
3077 | } | |
3078 | ||
3079 | /* Remove the symbols that were in the swept sections from the dynamic | |
3080 | symbol table. */ | |
3081 | coff_link_hash_traverse (coff_hash_table (info), coff_gc_sweep_symbol, | |
3082 | NULL); | |
3083 | ||
3084 | return TRUE; | |
3085 | } | |
3086 | ||
3087 | /* Keep all sections containing symbols undefined on the command-line, | |
3088 | and the section containing the entry symbol. */ | |
3089 | ||
3090 | static void | |
3091 | _bfd_coff_gc_keep (struct bfd_link_info *info) | |
3092 | { | |
3093 | struct bfd_sym_chain *sym; | |
3094 | ||
3095 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) | |
3096 | { | |
3097 | struct coff_link_hash_entry *h; | |
3098 | ||
3099 | h = coff_link_hash_lookup (coff_hash_table (info), sym->name, | |
3100 | FALSE, FALSE, FALSE); | |
3101 | ||
3102 | if (h != NULL | |
3103 | && (h->root.type == bfd_link_hash_defined | |
3104 | || h->root.type == bfd_link_hash_defweak) | |
3105 | && !bfd_is_abs_section (h->root.u.def.section)) | |
3106 | h->root.u.def.section->flags |= SEC_KEEP; | |
3107 | } | |
3108 | } | |
3109 | ||
3110 | /* Do mark and sweep of unused sections. */ | |
3111 | ||
3112 | bfd_boolean | |
3113 | bfd_coff_gc_sections (bfd *abfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) | |
3114 | { | |
3115 | bfd *sub; | |
3116 | ||
3117 | /* FIXME: Should we implement this? */ | |
3118 | #if 0 | |
3119 | const bfd_coff_backend_data *bed = coff_backend_info (abfd); | |
3120 | ||
3121 | if (!bed->can_gc_sections | |
3122 | || !is_coff_hash_table (info->hash)) | |
3123 | { | |
59d08d6c | 3124 | _bfd_error_handler(_("warning: gc-sections option ignored")); |
0f088b2a KT |
3125 | return TRUE; |
3126 | } | |
3127 | #endif | |
3128 | ||
3129 | _bfd_coff_gc_keep (info); | |
3130 | ||
3131 | /* Grovel through relocs to find out who stays ... */ | |
3132 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) | |
3133 | { | |
3134 | asection *o; | |
3135 | ||
3136 | if (bfd_get_flavour (sub) != bfd_target_coff_flavour) | |
07d6d2b8 | 3137 | continue; |
0f088b2a KT |
3138 | |
3139 | for (o = sub->sections; o != NULL; o = o->next) | |
07d6d2b8 | 3140 | { |
0f088b2a KT |
3141 | if (((o->flags & (SEC_EXCLUDE | SEC_KEEP)) == SEC_KEEP |
3142 | || CONST_STRNEQ (o->name, ".vectors") | |
3143 | || CONST_STRNEQ (o->name, ".ctors") | |
3144 | || CONST_STRNEQ (o->name, ".dtors")) | |
3145 | && !o->gc_mark) | |
3146 | { | |
3147 | if (!_bfd_coff_gc_mark (info, o, _bfd_coff_gc_mark_hook)) | |
3148 | return FALSE; | |
3149 | } | |
07d6d2b8 | 3150 | } |
0f088b2a KT |
3151 | } |
3152 | ||
3153 | /* Allow the backend to mark additional target specific sections. */ | |
3154 | _bfd_coff_gc_mark_extra_sections (info, _bfd_coff_gc_mark_hook); | |
3155 | ||
3156 | /* ... and mark SEC_EXCLUDE for those that go. */ | |
3157 | return coff_gc_sweep (abfd, info); | |
3158 | } | |
cb7f4b29 AM |
3159 | |
3160 | /* Return name used to identify a comdat group. */ | |
3161 | ||
3162 | const char * | |
3163 | bfd_coff_group_name (bfd *abfd, const asection *sec) | |
3164 | { | |
3165 | struct coff_comdat_info *ci = bfd_coff_get_comdat_section (abfd, sec); | |
3166 | if (ci != NULL) | |
3167 | return ci->name; | |
3168 | return NULL; | |
3169 | } | |
f5d35bb7 AM |
3170 | |
3171 | bfd_boolean | |
3172 | _bfd_coff_close_and_cleanup (bfd *abfd) | |
3173 | { | |
3174 | if (abfd->format == bfd_object | |
3175 | && bfd_family_coff (abfd) | |
3176 | && coff_data (abfd) != NULL) | |
3177 | { | |
3178 | obj_coff_keep_syms (abfd) = FALSE; | |
3179 | obj_coff_keep_strings (abfd) = FALSE; | |
3180 | if (!_bfd_coff_free_symbols (abfd)) | |
3181 | return FALSE; | |
3182 | } | |
3183 | return _bfd_generic_close_and_cleanup (abfd); | |
3184 | } |