Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Support for the generic parts of COFF, for BFD. |
7898deda | 2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
aa820537 | 3 | 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
252b5132 RH |
4 | Free Software Foundation, Inc. |
5 | Written by Cygnus Support. | |
6 | ||
c8e7bf0d | 7 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 8 | |
c8e7bf0d NC |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c8e7bf0d | 12 | (at your option) any later version. |
252b5132 | 13 | |
c8e7bf0d NC |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
252b5132 | 18 | |
c8e7bf0d NC |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
21 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
22 | MA 02110-1301, USA. */ | |
252b5132 RH |
23 | |
24 | /* Most of this hacked by Steve Chamberlain, sac@cygnus.com. | |
25 | Split out of coffcode.h by Ian Taylor, ian@cygnus.com. */ | |
26 | ||
27 | /* This file contains COFF code that is not dependent on any | |
28 | particular COFF target. There is only one version of this file in | |
29 | libbfd.a, so no target specific code may be put in here. Or, to | |
30 | put it another way, | |
31 | ||
32 | ********** DO NOT PUT TARGET SPECIFIC CODE IN THIS FILE ********** | |
33 | ||
34 | If you need to add some target specific behaviour, add a new hook | |
35 | function to bfd_coff_backend_data. | |
36 | ||
37 | Some of these functions are also called by the ECOFF routines. | |
38 | Those functions may not use any COFF specific information, such as | |
39 | coff_data (abfd). */ | |
40 | ||
252b5132 | 41 | #include "sysdep.h" |
3db64b00 | 42 | #include "bfd.h" |
252b5132 RH |
43 | #include "libbfd.h" |
44 | #include "coff/internal.h" | |
45 | #include "libcoff.h" | |
46 | ||
252b5132 RH |
47 | /* Take a section header read from a coff file (in HOST byte order), |
48 | and make a BFD "section" out of it. This is used by ECOFF. */ | |
c8e7bf0d | 49 | |
b34976b6 | 50 | static bfd_boolean |
c8e7bf0d NC |
51 | make_a_section_from_file (bfd *abfd, |
52 | struct internal_scnhdr *hdr, | |
53 | unsigned int target_index) | |
252b5132 RH |
54 | { |
55 | asection *return_section; | |
56 | char *name; | |
b34976b6 | 57 | bfd_boolean result = TRUE; |
7c8ca0e4 | 58 | flagword flags; |
252b5132 RH |
59 | |
60 | name = NULL; | |
61 | ||
88183869 DK |
62 | /* Handle long section names as in PE. On reading, we want to |
63 | accept long names if the format permits them at all, regardless | |
64 | of the current state of the flag that dictates if we would generate | |
65 | them in outputs; this construct checks if that is the case by | |
66 | attempting to set the flag, without changing its state; the call | |
67 | will fail for formats that do not support long names at all. */ | |
68 | if (bfd_coff_set_long_section_names (abfd, bfd_coff_long_section_names (abfd)) | |
252b5132 RH |
69 | && hdr->s_name[0] == '/') |
70 | { | |
71 | char buf[SCNNMLEN]; | |
72 | long strindex; | |
73 | char *p; | |
74 | const char *strings; | |
75 | ||
0408dee6 DK |
76 | /* Flag that this BFD uses long names, even though the format might |
77 | expect them to be off by default. This won't directly affect the | |
78 | format of any output BFD created from this one, but the information | |
79 | can be used to decide what to do. */ | |
80 | bfd_coff_set_long_section_names (abfd, TRUE); | |
252b5132 RH |
81 | memcpy (buf, hdr->s_name + 1, SCNNMLEN - 1); |
82 | buf[SCNNMLEN - 1] = '\0'; | |
83 | strindex = strtol (buf, &p, 10); | |
84 | if (*p == '\0' && strindex >= 0) | |
85 | { | |
86 | strings = _bfd_coff_read_string_table (abfd); | |
87 | if (strings == NULL) | |
b34976b6 | 88 | return FALSE; |
252b5132 RH |
89 | /* FIXME: For extra safety, we should make sure that |
90 | strindex does not run us past the end, but right now we | |
91 | don't know the length of the string table. */ | |
92 | strings += strindex; | |
a50b1753 NC |
93 | name = (char *) bfd_alloc (abfd, |
94 | (bfd_size_type) strlen (strings) + 1); | |
252b5132 | 95 | if (name == NULL) |
b34976b6 | 96 | return FALSE; |
252b5132 RH |
97 | strcpy (name, strings); |
98 | } | |
99 | } | |
100 | ||
101 | if (name == NULL) | |
102 | { | |
103 | /* Assorted wastage to null-terminate the name, thanks AT&T! */ | |
a50b1753 NC |
104 | name = (char *) bfd_alloc (abfd, |
105 | (bfd_size_type) sizeof (hdr->s_name) + 1); | |
252b5132 | 106 | if (name == NULL) |
b34976b6 | 107 | return FALSE; |
252b5132 RH |
108 | strncpy (name, (char *) &hdr->s_name[0], sizeof (hdr->s_name)); |
109 | name[sizeof (hdr->s_name)] = 0; | |
110 | } | |
111 | ||
112 | return_section = bfd_make_section_anyway (abfd, name); | |
113 | if (return_section == NULL) | |
b34976b6 | 114 | return FALSE; |
252b5132 RH |
115 | |
116 | return_section->vma = hdr->s_vaddr; | |
117 | return_section->lma = hdr->s_paddr; | |
eea6121a | 118 | return_section->size = hdr->s_size; |
252b5132 RH |
119 | return_section->filepos = hdr->s_scnptr; |
120 | return_section->rel_filepos = hdr->s_relptr; | |
121 | return_section->reloc_count = hdr->s_nreloc; | |
122 | ||
123 | bfd_coff_set_alignment_hook (abfd, return_section, hdr); | |
124 | ||
125 | return_section->line_filepos = hdr->s_lnnoptr; | |
126 | ||
127 | return_section->lineno_count = hdr->s_nlnno; | |
128 | return_section->userdata = NULL; | |
c8e7bf0d | 129 | return_section->next = NULL; |
252b5132 | 130 | return_section->target_index = target_index; |
7c8ca0e4 NC |
131 | |
132 | if (! bfd_coff_styp_to_sec_flags_hook (abfd, hdr, name, return_section, | |
133 | & flags)) | |
b34976b6 | 134 | result = FALSE; |
dc810e39 | 135 | |
7c8ca0e4 | 136 | return_section->flags = flags; |
252b5132 RH |
137 | |
138 | /* At least on i386-coff, the line number count for a shared library | |
139 | section must be ignored. */ | |
140 | if ((return_section->flags & SEC_COFF_SHARED_LIBRARY) != 0) | |
141 | return_section->lineno_count = 0; | |
142 | ||
143 | if (hdr->s_nreloc != 0) | |
144 | return_section->flags |= SEC_RELOC; | |
c8e7bf0d | 145 | /* FIXME: should this check 'hdr->s_size > 0'. */ |
252b5132 RH |
146 | if (hdr->s_scnptr != 0) |
147 | return_section->flags |= SEC_HAS_CONTENTS; | |
7c8ca0e4 NC |
148 | |
149 | return result; | |
252b5132 RH |
150 | } |
151 | ||
152 | /* Read in a COFF object and make it into a BFD. This is used by | |
153 | ECOFF as well. */ | |
154 | ||
155 | static const bfd_target * | |
c8e7bf0d NC |
156 | coff_real_object_p (bfd *abfd, |
157 | unsigned nscns, | |
158 | struct internal_filehdr *internal_f, | |
159 | struct internal_aouthdr *internal_a) | |
252b5132 RH |
160 | { |
161 | flagword oflags = abfd->flags; | |
162 | bfd_vma ostart = bfd_get_start_address (abfd); | |
c8e7bf0d NC |
163 | void * tdata; |
164 | void * tdata_save; | |
165 | bfd_size_type readsize; /* Length of file_info. */ | |
252b5132 RH |
166 | unsigned int scnhsz; |
167 | char *external_sections; | |
168 | ||
169 | if (!(internal_f->f_flags & F_RELFLG)) | |
170 | abfd->flags |= HAS_RELOC; | |
171 | if ((internal_f->f_flags & F_EXEC)) | |
172 | abfd->flags |= EXEC_P; | |
173 | if (!(internal_f->f_flags & F_LNNO)) | |
174 | abfd->flags |= HAS_LINENO; | |
175 | if (!(internal_f->f_flags & F_LSYMS)) | |
176 | abfd->flags |= HAS_LOCALS; | |
177 | ||
178 | /* FIXME: How can we set D_PAGED correctly? */ | |
179 | if ((internal_f->f_flags & F_EXEC) != 0) | |
180 | abfd->flags |= D_PAGED; | |
181 | ||
182 | bfd_get_symcount (abfd) = internal_f->f_nsyms; | |
183 | if (internal_f->f_nsyms) | |
184 | abfd->flags |= HAS_SYMS; | |
185 | ||
186 | if (internal_a != (struct internal_aouthdr *) NULL) | |
187 | bfd_get_start_address (abfd) = internal_a->entry; | |
188 | else | |
189 | bfd_get_start_address (abfd) = 0; | |
190 | ||
191 | /* Set up the tdata area. ECOFF uses its own routine, and overrides | |
192 | abfd->flags. */ | |
487e54f2 | 193 | tdata_save = abfd->tdata.any; |
c8e7bf0d | 194 | tdata = bfd_coff_mkobject_hook (abfd, (void *) internal_f, (void *) internal_a); |
252b5132 | 195 | if (tdata == NULL) |
487e54f2 | 196 | goto fail2; |
252b5132 RH |
197 | |
198 | scnhsz = bfd_coff_scnhsz (abfd); | |
dc810e39 | 199 | readsize = (bfd_size_type) nscns * scnhsz; |
a50b1753 | 200 | external_sections = (char *) bfd_alloc (abfd, readsize); |
252b5132 RH |
201 | if (!external_sections) |
202 | goto fail; | |
203 | ||
c8e7bf0d | 204 | if (bfd_bread ((void *) external_sections, readsize, abfd) != readsize) |
252b5132 RH |
205 | goto fail; |
206 | ||
363d7b14 | 207 | /* Set the arch/mach *before* swapping in sections; section header swapping |
244148ad | 208 | may depend on arch/mach info. */ |
c8e7bf0d | 209 | if (! bfd_coff_set_arch_mach_hook (abfd, (void *) internal_f)) |
363d7b14 TW |
210 | goto fail; |
211 | ||
e16bb312 | 212 | /* Now copy data as required; construct all asections etc. */ |
252b5132 RH |
213 | if (nscns != 0) |
214 | { | |
215 | unsigned int i; | |
216 | for (i = 0; i < nscns; i++) | |
217 | { | |
218 | struct internal_scnhdr tmp; | |
219 | bfd_coff_swap_scnhdr_in (abfd, | |
c8e7bf0d NC |
220 | (void *) (external_sections + i * scnhsz), |
221 | (void *) & tmp); | |
252b5132 RH |
222 | if (! make_a_section_from_file (abfd, &tmp, i + 1)) |
223 | goto fail; | |
224 | } | |
225 | } | |
226 | ||
252b5132 RH |
227 | return abfd->xvec; |
228 | ||
229 | fail: | |
230 | bfd_release (abfd, tdata); | |
487e54f2 AM |
231 | fail2: |
232 | abfd->tdata.any = tdata_save; | |
252b5132 RH |
233 | abfd->flags = oflags; |
234 | bfd_get_start_address (abfd) = ostart; | |
235 | return (const bfd_target *) NULL; | |
236 | } | |
237 | ||
238 | /* Turn a COFF file into a BFD, but fail with bfd_error_wrong_format if it is | |
239 | not a COFF file. This is also used by ECOFF. */ | |
240 | ||
241 | const bfd_target * | |
c8e7bf0d | 242 | coff_object_p (bfd *abfd) |
252b5132 | 243 | { |
dc810e39 AM |
244 | bfd_size_type filhsz; |
245 | bfd_size_type aoutsz; | |
246 | unsigned int nscns; | |
c8e7bf0d | 247 | void * filehdr; |
252b5132 RH |
248 | struct internal_filehdr internal_f; |
249 | struct internal_aouthdr internal_a; | |
250 | ||
c8e7bf0d | 251 | /* Figure out how much to read. */ |
252b5132 RH |
252 | filhsz = bfd_coff_filhsz (abfd); |
253 | aoutsz = bfd_coff_aoutsz (abfd); | |
254 | ||
255 | filehdr = bfd_alloc (abfd, filhsz); | |
256 | if (filehdr == NULL) | |
487e54f2 | 257 | return NULL; |
dc810e39 | 258 | if (bfd_bread (filehdr, filhsz, abfd) != filhsz) |
252b5132 RH |
259 | { |
260 | if (bfd_get_error () != bfd_error_system_call) | |
261 | bfd_set_error (bfd_error_wrong_format); | |
487e54f2 AM |
262 | bfd_release (abfd, filehdr); |
263 | return NULL; | |
252b5132 RH |
264 | } |
265 | bfd_coff_swap_filehdr_in (abfd, filehdr, &internal_f); | |
266 | bfd_release (abfd, filehdr); | |
267 | ||
b8819ab2 NC |
268 | /* The XCOFF format has two sizes for the f_opthdr. SMALL_AOUTSZ |
269 | (less than aoutsz) used in object files and AOUTSZ (equal to | |
270 | aoutsz) in executables. The bfd_coff_swap_aouthdr_in function | |
271 | expects this header to be aoutsz bytes in length, so we use that | |
272 | value in the call to bfd_alloc below. But we must be careful to | |
273 | only read in f_opthdr bytes in the call to bfd_bread. We should | |
274 | also attempt to catch corrupt or non-COFF binaries with a strange | |
275 | value for f_opthdr. */ | |
82e51918 | 276 | if (! bfd_coff_bad_format_hook (abfd, &internal_f) |
95f7d9f7 | 277 | || internal_f.f_opthdr > aoutsz) |
252b5132 RH |
278 | { |
279 | bfd_set_error (bfd_error_wrong_format); | |
487e54f2 | 280 | return NULL; |
252b5132 RH |
281 | } |
282 | nscns = internal_f.f_nscns; | |
283 | ||
284 | if (internal_f.f_opthdr) | |
285 | { | |
c8e7bf0d | 286 | void * opthdr; |
252b5132 RH |
287 | |
288 | opthdr = bfd_alloc (abfd, aoutsz); | |
289 | if (opthdr == NULL) | |
487e54f2 | 290 | return NULL; |
dc810e39 | 291 | if (bfd_bread (opthdr, (bfd_size_type) internal_f.f_opthdr, abfd) |
252b5132 RH |
292 | != internal_f.f_opthdr) |
293 | { | |
487e54f2 AM |
294 | bfd_release (abfd, opthdr); |
295 | return NULL; | |
252b5132 | 296 | } |
c8e7bf0d | 297 | bfd_coff_swap_aouthdr_in (abfd, opthdr, (void *) &internal_a); |
487e54f2 | 298 | bfd_release (abfd, opthdr); |
252b5132 RH |
299 | } |
300 | ||
301 | return coff_real_object_p (abfd, nscns, &internal_f, | |
302 | (internal_f.f_opthdr != 0 | |
303 | ? &internal_a | |
304 | : (struct internal_aouthdr *) NULL)); | |
305 | } | |
306 | ||
307 | /* Get the BFD section from a COFF symbol section number. */ | |
308 | ||
309 | asection * | |
91d6fa6a | 310 | coff_section_from_bfd_index (bfd *abfd, int section_index) |
252b5132 | 311 | { |
198beae2 | 312 | struct bfd_section *answer = abfd->sections; |
252b5132 | 313 | |
91d6fa6a | 314 | if (section_index == N_ABS) |
252b5132 | 315 | return bfd_abs_section_ptr; |
91d6fa6a | 316 | if (section_index == N_UNDEF) |
252b5132 | 317 | return bfd_und_section_ptr; |
91d6fa6a | 318 | if (section_index == N_DEBUG) |
252b5132 RH |
319 | return bfd_abs_section_ptr; |
320 | ||
321 | while (answer) | |
322 | { | |
91d6fa6a | 323 | if (answer->target_index == section_index) |
252b5132 RH |
324 | return answer; |
325 | answer = answer->next; | |
326 | } | |
327 | ||
328 | /* We should not reach this point, but the SCO 3.2v4 /lib/libc_s.a | |
329 | has a bad symbol table in biglitpow.o. */ | |
330 | return bfd_und_section_ptr; | |
331 | } | |
332 | ||
333 | /* Get the upper bound of a COFF symbol table. */ | |
334 | ||
335 | long | |
c8e7bf0d | 336 | coff_get_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
337 | { |
338 | if (!bfd_coff_slurp_symbol_table (abfd)) | |
339 | return -1; | |
340 | ||
341 | return (bfd_get_symcount (abfd) + 1) * (sizeof (coff_symbol_type *)); | |
342 | } | |
343 | ||
252b5132 RH |
344 | /* Canonicalize a COFF symbol table. */ |
345 | ||
346 | long | |
c8e7bf0d | 347 | coff_canonicalize_symtab (bfd *abfd, asymbol **alocation) |
252b5132 RH |
348 | { |
349 | unsigned int counter; | |
350 | coff_symbol_type *symbase; | |
351 | coff_symbol_type **location = (coff_symbol_type **) alocation; | |
352 | ||
353 | if (!bfd_coff_slurp_symbol_table (abfd)) | |
354 | return -1; | |
355 | ||
356 | symbase = obj_symbols (abfd); | |
357 | counter = bfd_get_symcount (abfd); | |
358 | while (counter-- > 0) | |
359 | *location++ = symbase++; | |
360 | ||
361 | *location = NULL; | |
362 | ||
363 | return bfd_get_symcount (abfd); | |
364 | } | |
365 | ||
366 | /* Get the name of a symbol. The caller must pass in a buffer of size | |
367 | >= SYMNMLEN + 1. */ | |
368 | ||
369 | const char * | |
c8e7bf0d NC |
370 | _bfd_coff_internal_syment_name (bfd *abfd, |
371 | const struct internal_syment *sym, | |
372 | char *buf) | |
252b5132 RH |
373 | { |
374 | /* FIXME: It's not clear this will work correctly if sizeof | |
375 | (_n_zeroes) != 4. */ | |
376 | if (sym->_n._n_n._n_zeroes != 0 | |
377 | || sym->_n._n_n._n_offset == 0) | |
378 | { | |
379 | memcpy (buf, sym->_n._n_name, SYMNMLEN); | |
380 | buf[SYMNMLEN] = '\0'; | |
381 | return buf; | |
382 | } | |
383 | else | |
384 | { | |
385 | const char *strings; | |
386 | ||
387 | BFD_ASSERT (sym->_n._n_n._n_offset >= STRING_SIZE_SIZE); | |
388 | strings = obj_coff_strings (abfd); | |
389 | if (strings == NULL) | |
390 | { | |
391 | strings = _bfd_coff_read_string_table (abfd); | |
392 | if (strings == NULL) | |
393 | return NULL; | |
394 | } | |
395 | return strings + sym->_n._n_n._n_offset; | |
396 | } | |
397 | } | |
398 | ||
399 | /* Read in and swap the relocs. This returns a buffer holding the | |
b34976b6 | 400 | relocs for section SEC in file ABFD. If CACHE is TRUE and |
252b5132 RH |
401 | INTERNAL_RELOCS is NULL, the relocs read in will be saved in case |
402 | the function is called again. If EXTERNAL_RELOCS is not NULL, it | |
403 | is a buffer large enough to hold the unswapped relocs. If | |
404 | INTERNAL_RELOCS is not NULL, it is a buffer large enough to hold | |
b34976b6 | 405 | the swapped relocs. If REQUIRE_INTERNAL is TRUE, then the return |
252b5132 RH |
406 | value must be INTERNAL_RELOCS. The function returns NULL on error. */ |
407 | ||
408 | struct internal_reloc * | |
c8e7bf0d NC |
409 | _bfd_coff_read_internal_relocs (bfd *abfd, |
410 | asection *sec, | |
411 | bfd_boolean cache, | |
412 | bfd_byte *external_relocs, | |
413 | bfd_boolean require_internal, | |
414 | struct internal_reloc *internal_relocs) | |
252b5132 RH |
415 | { |
416 | bfd_size_type relsz; | |
417 | bfd_byte *free_external = NULL; | |
418 | struct internal_reloc *free_internal = NULL; | |
419 | bfd_byte *erel; | |
420 | bfd_byte *erel_end; | |
421 | struct internal_reloc *irel; | |
dc810e39 | 422 | bfd_size_type amt; |
252b5132 | 423 | |
9d7038d3 MS |
424 | if (sec->reloc_count == 0) |
425 | return internal_relocs; /* Nothing to do. */ | |
426 | ||
252b5132 RH |
427 | if (coff_section_data (abfd, sec) != NULL |
428 | && coff_section_data (abfd, sec)->relocs != NULL) | |
429 | { | |
430 | if (! require_internal) | |
431 | return coff_section_data (abfd, sec)->relocs; | |
432 | memcpy (internal_relocs, coff_section_data (abfd, sec)->relocs, | |
433 | sec->reloc_count * sizeof (struct internal_reloc)); | |
434 | return internal_relocs; | |
435 | } | |
436 | ||
437 | relsz = bfd_coff_relsz (abfd); | |
438 | ||
dc810e39 | 439 | amt = sec->reloc_count * relsz; |
252b5132 RH |
440 | if (external_relocs == NULL) |
441 | { | |
a50b1753 | 442 | free_external = (bfd_byte *) bfd_malloc (amt); |
9d7038d3 | 443 | if (free_external == NULL) |
252b5132 RH |
444 | goto error_return; |
445 | external_relocs = free_external; | |
446 | } | |
447 | ||
448 | if (bfd_seek (abfd, sec->rel_filepos, SEEK_SET) != 0 | |
dc810e39 | 449 | || bfd_bread (external_relocs, amt, abfd) != amt) |
252b5132 RH |
450 | goto error_return; |
451 | ||
452 | if (internal_relocs == NULL) | |
453 | { | |
dc810e39 AM |
454 | amt = sec->reloc_count; |
455 | amt *= sizeof (struct internal_reloc); | |
a50b1753 | 456 | free_internal = (struct internal_reloc *) bfd_malloc (amt); |
9d7038d3 | 457 | if (free_internal == NULL) |
252b5132 RH |
458 | goto error_return; |
459 | internal_relocs = free_internal; | |
460 | } | |
461 | ||
462 | /* Swap in the relocs. */ | |
463 | erel = external_relocs; | |
464 | erel_end = erel + relsz * sec->reloc_count; | |
465 | irel = internal_relocs; | |
466 | for (; erel < erel_end; erel += relsz, irel++) | |
c8e7bf0d | 467 | bfd_coff_swap_reloc_in (abfd, (void *) erel, (void *) irel); |
252b5132 RH |
468 | |
469 | if (free_external != NULL) | |
470 | { | |
471 | free (free_external); | |
472 | free_external = NULL; | |
473 | } | |
474 | ||
9ee2139f | 475 | if (cache && free_internal != NULL) |
252b5132 | 476 | { |
9ee2139f | 477 | if (coff_section_data (abfd, sec) == NULL) |
252b5132 | 478 | { |
9ee2139f MS |
479 | amt = sizeof (struct coff_section_tdata); |
480 | sec->used_by_bfd = bfd_zalloc (abfd, amt); | |
481 | if (sec->used_by_bfd == NULL) | |
482 | goto error_return; | |
483 | coff_section_data (abfd, sec)->contents = NULL; | |
252b5132 | 484 | } |
9ee2139f | 485 | coff_section_data (abfd, sec)->relocs = free_internal; |
252b5132 RH |
486 | } |
487 | ||
488 | return internal_relocs; | |
489 | ||
490 | error_return: | |
491 | if (free_external != NULL) | |
492 | free (free_external); | |
493 | if (free_internal != NULL) | |
494 | free (free_internal); | |
495 | return NULL; | |
496 | } | |
497 | ||
498 | /* Set lineno_count for the output sections of a COFF file. */ | |
499 | ||
500 | int | |
c8e7bf0d | 501 | coff_count_linenumbers (bfd *abfd) |
252b5132 RH |
502 | { |
503 | unsigned int limit = bfd_get_symcount (abfd); | |
504 | unsigned int i; | |
505 | int total = 0; | |
506 | asymbol **p; | |
507 | asection *s; | |
508 | ||
509 | if (limit == 0) | |
510 | { | |
511 | /* This may be from the backend linker, in which case the | |
512 | lineno_count in the sections is correct. */ | |
513 | for (s = abfd->sections; s != NULL; s = s->next) | |
514 | total += s->lineno_count; | |
515 | return total; | |
516 | } | |
517 | ||
518 | for (s = abfd->sections; s != NULL; s = s->next) | |
519 | BFD_ASSERT (s->lineno_count == 0); | |
520 | ||
521 | for (p = abfd->outsymbols, i = 0; i < limit; i++, p++) | |
522 | { | |
523 | asymbol *q_maybe = *p; | |
524 | ||
9bd09e22 | 525 | if (bfd_family_coff (bfd_asymbol_bfd (q_maybe))) |
252b5132 RH |
526 | { |
527 | coff_symbol_type *q = coffsymbol (q_maybe); | |
528 | ||
529 | /* The AIX 4.1 compiler can sometimes generate line numbers | |
530 | attached to debugging symbols. We try to simply ignore | |
531 | those here. */ | |
532 | if (q->lineno != NULL | |
533 | && q->symbol.section->owner != NULL) | |
534 | { | |
535 | /* This symbol has line numbers. Increment the owning | |
536 | section's linenumber count. */ | |
537 | alent *l = q->lineno; | |
538 | ||
84c254c6 | 539 | do |
252b5132 | 540 | { |
84c254c6 | 541 | asection * sec = q->symbol.section->output_section; |
b34976b6 | 542 | |
84c254c6 NC |
543 | /* Do not try to update fields in read-only sections. */ |
544 | if (! bfd_is_const_section (sec)) | |
545 | sec->lineno_count ++; | |
546 | ||
252b5132 | 547 | ++total; |
252b5132 RH |
548 | ++l; |
549 | } | |
84c254c6 | 550 | while (l->line_number != 0); |
252b5132 RH |
551 | } |
552 | } | |
553 | } | |
554 | ||
555 | return total; | |
556 | } | |
557 | ||
558 | /* Takes a bfd and a symbol, returns a pointer to the coff specific | |
559 | area of the symbol if there is one. */ | |
560 | ||
252b5132 | 561 | coff_symbol_type * |
c8e7bf0d NC |
562 | coff_symbol_from (bfd *ignore_abfd ATTRIBUTE_UNUSED, |
563 | asymbol *symbol) | |
252b5132 | 564 | { |
9bd09e22 | 565 | if (!bfd_family_coff (bfd_asymbol_bfd (symbol))) |
252b5132 RH |
566 | return (coff_symbol_type *) NULL; |
567 | ||
568 | if (bfd_asymbol_bfd (symbol)->tdata.coff_obj_data == (coff_data_type *) NULL) | |
569 | return (coff_symbol_type *) NULL; | |
570 | ||
571 | return (coff_symbol_type *) symbol; | |
572 | } | |
573 | ||
574 | static void | |
c8e7bf0d NC |
575 | fixup_symbol_value (bfd *abfd, |
576 | coff_symbol_type *coff_symbol_ptr, | |
577 | struct internal_syment *syment) | |
252b5132 | 578 | { |
c8e7bf0d | 579 | /* Normalize the symbol flags. */ |
ac38308c MS |
580 | if (coff_symbol_ptr->symbol.section |
581 | && bfd_is_com_section (coff_symbol_ptr->symbol.section)) | |
252b5132 | 582 | { |
c8e7bf0d | 583 | /* A common symbol is undefined with a value. */ |
252b5132 RH |
584 | syment->n_scnum = N_UNDEF; |
585 | syment->n_value = coff_symbol_ptr->symbol.value; | |
586 | } | |
703153b5 ILT |
587 | else if ((coff_symbol_ptr->symbol.flags & BSF_DEBUGGING) != 0 |
588 | && (coff_symbol_ptr->symbol.flags & BSF_DEBUGGING_RELOC) == 0) | |
252b5132 RH |
589 | { |
590 | syment->n_value = coff_symbol_ptr->symbol.value; | |
591 | } | |
592 | else if (bfd_is_und_section (coff_symbol_ptr->symbol.section)) | |
593 | { | |
594 | syment->n_scnum = N_UNDEF; | |
595 | syment->n_value = 0; | |
596 | } | |
7bb9db4d | 597 | /* FIXME: Do we need to handle the absolute section here? */ |
252b5132 RH |
598 | else |
599 | { | |
600 | if (coff_symbol_ptr->symbol.section) | |
601 | { | |
602 | syment->n_scnum = | |
603 | coff_symbol_ptr->symbol.section->output_section->target_index; | |
604 | ||
605 | syment->n_value = (coff_symbol_ptr->symbol.value | |
606 | + coff_symbol_ptr->symbol.section->output_offset); | |
607 | if (! obj_pe (abfd)) | |
34cbe64e TW |
608 | { |
609 | syment->n_value += (syment->n_sclass == C_STATLAB) | |
610 | ? coff_symbol_ptr->symbol.section->output_section->lma | |
611 | : coff_symbol_ptr->symbol.section->output_section->vma; | |
612 | } | |
252b5132 RH |
613 | } |
614 | else | |
615 | { | |
616 | BFD_ASSERT (0); | |
617 | /* This can happen, but I don't know why yet (steve@cygnus.com) */ | |
618 | syment->n_scnum = N_ABS; | |
619 | syment->n_value = coff_symbol_ptr->symbol.value; | |
620 | } | |
621 | } | |
622 | } | |
623 | ||
624 | /* Run through all the symbols in the symbol table and work out what | |
625 | their indexes into the symbol table will be when output. | |
626 | ||
627 | Coff requires that each C_FILE symbol points to the next one in the | |
628 | chain, and that the last one points to the first external symbol. We | |
629 | do that here too. */ | |
630 | ||
b34976b6 | 631 | bfd_boolean |
c8e7bf0d | 632 | coff_renumber_symbols (bfd *bfd_ptr, int *first_undef) |
252b5132 RH |
633 | { |
634 | unsigned int symbol_count = bfd_get_symcount (bfd_ptr); | |
635 | asymbol **symbol_ptr_ptr = bfd_ptr->outsymbols; | |
636 | unsigned int native_index = 0; | |
c8e7bf0d | 637 | struct internal_syment *last_file = NULL; |
252b5132 RH |
638 | unsigned int symbol_index; |
639 | ||
640 | /* COFF demands that undefined symbols come after all other symbols. | |
641 | Since we don't need to impose this extra knowledge on all our | |
642 | client programs, deal with that here. Sort the symbol table; | |
643 | just move the undefined symbols to the end, leaving the rest | |
644 | alone. The O'Reilly book says that defined global symbols come | |
645 | at the end before the undefined symbols, so we do that here as | |
646 | well. */ | |
647 | /* @@ Do we have some condition we could test for, so we don't always | |
648 | have to do this? I don't think relocatability is quite right, but | |
649 | I'm not certain. [raeburn:19920508.1711EST] */ | |
650 | { | |
651 | asymbol **newsyms; | |
652 | unsigned int i; | |
dc810e39 | 653 | bfd_size_type amt; |
252b5132 | 654 | |
dc810e39 | 655 | amt = sizeof (asymbol *) * ((bfd_size_type) symbol_count + 1); |
a50b1753 | 656 | newsyms = (asymbol **) bfd_alloc (bfd_ptr, amt); |
252b5132 | 657 | if (!newsyms) |
b34976b6 | 658 | return FALSE; |
252b5132 RH |
659 | bfd_ptr->outsymbols = newsyms; |
660 | for (i = 0; i < symbol_count; i++) | |
661 | if ((symbol_ptr_ptr[i]->flags & BSF_NOT_AT_END) != 0 | |
662 | || (!bfd_is_und_section (symbol_ptr_ptr[i]->section) | |
663 | && !bfd_is_com_section (symbol_ptr_ptr[i]->section) | |
664 | && ((symbol_ptr_ptr[i]->flags & BSF_FUNCTION) != 0 | |
665 | || ((symbol_ptr_ptr[i]->flags & (BSF_GLOBAL | BSF_WEAK)) | |
666 | == 0)))) | |
667 | *newsyms++ = symbol_ptr_ptr[i]; | |
668 | ||
669 | for (i = 0; i < symbol_count; i++) | |
670 | if ((symbol_ptr_ptr[i]->flags & BSF_NOT_AT_END) == 0 | |
671 | && !bfd_is_und_section (symbol_ptr_ptr[i]->section) | |
672 | && (bfd_is_com_section (symbol_ptr_ptr[i]->section) | |
673 | || ((symbol_ptr_ptr[i]->flags & BSF_FUNCTION) == 0 | |
674 | && ((symbol_ptr_ptr[i]->flags & (BSF_GLOBAL | BSF_WEAK)) | |
675 | != 0)))) | |
676 | *newsyms++ = symbol_ptr_ptr[i]; | |
677 | ||
678 | *first_undef = newsyms - bfd_ptr->outsymbols; | |
679 | ||
680 | for (i = 0; i < symbol_count; i++) | |
681 | if ((symbol_ptr_ptr[i]->flags & BSF_NOT_AT_END) == 0 | |
682 | && bfd_is_und_section (symbol_ptr_ptr[i]->section)) | |
683 | *newsyms++ = symbol_ptr_ptr[i]; | |
684 | *newsyms = (asymbol *) NULL; | |
685 | symbol_ptr_ptr = bfd_ptr->outsymbols; | |
686 | } | |
687 | ||
688 | for (symbol_index = 0; symbol_index < symbol_count; symbol_index++) | |
689 | { | |
690 | coff_symbol_type *coff_symbol_ptr = coff_symbol_from (bfd_ptr, symbol_ptr_ptr[symbol_index]); | |
244148ad | 691 | symbol_ptr_ptr[symbol_index]->udata.i = symbol_index; |
252b5132 RH |
692 | if (coff_symbol_ptr && coff_symbol_ptr->native) |
693 | { | |
694 | combined_entry_type *s = coff_symbol_ptr->native; | |
695 | int i; | |
696 | ||
697 | if (s->u.syment.n_sclass == C_FILE) | |
698 | { | |
c8e7bf0d | 699 | if (last_file != NULL) |
252b5132 RH |
700 | last_file->n_value = native_index; |
701 | last_file = &(s->u.syment); | |
702 | } | |
703 | else | |
c8e7bf0d NC |
704 | /* Modify the symbol values according to their section and |
705 | type. */ | |
706 | fixup_symbol_value (bfd_ptr, coff_symbol_ptr, &(s->u.syment)); | |
252b5132 | 707 | |
252b5132 RH |
708 | for (i = 0; i < s->u.syment.n_numaux + 1; i++) |
709 | s[i].offset = native_index++; | |
710 | } | |
711 | else | |
c8e7bf0d | 712 | native_index++; |
252b5132 | 713 | } |
c8e7bf0d | 714 | |
252b5132 RH |
715 | obj_conv_table_size (bfd_ptr) = native_index; |
716 | ||
b34976b6 | 717 | return TRUE; |
252b5132 RH |
718 | } |
719 | ||
720 | /* Run thorough the symbol table again, and fix it so that all | |
721 | pointers to entries are changed to the entries' index in the output | |
722 | symbol table. */ | |
723 | ||
724 | void | |
c8e7bf0d | 725 | coff_mangle_symbols (bfd *bfd_ptr) |
252b5132 RH |
726 | { |
727 | unsigned int symbol_count = bfd_get_symcount (bfd_ptr); | |
728 | asymbol **symbol_ptr_ptr = bfd_ptr->outsymbols; | |
729 | unsigned int symbol_index; | |
730 | ||
731 | for (symbol_index = 0; symbol_index < symbol_count; symbol_index++) | |
732 | { | |
733 | coff_symbol_type *coff_symbol_ptr = | |
734 | coff_symbol_from (bfd_ptr, symbol_ptr_ptr[symbol_index]); | |
735 | ||
736 | if (coff_symbol_ptr && coff_symbol_ptr->native) | |
737 | { | |
738 | int i; | |
739 | combined_entry_type *s = coff_symbol_ptr->native; | |
740 | ||
741 | if (s->fix_value) | |
742 | { | |
743 | /* FIXME: We should use a union here. */ | |
dc810e39 | 744 | s->u.syment.n_value = |
d2df793a NC |
745 | (bfd_hostptr_t) ((combined_entry_type *) |
746 | ((bfd_hostptr_t) s->u.syment.n_value))->offset; | |
252b5132 RH |
747 | s->fix_value = 0; |
748 | } | |
749 | if (s->fix_line) | |
750 | { | |
751 | /* The value is the offset into the line number entries | |
752 | for the symbol's section. On output, the symbol's | |
753 | section should be N_DEBUG. */ | |
754 | s->u.syment.n_value = | |
755 | (coff_symbol_ptr->symbol.section->output_section->line_filepos | |
756 | + s->u.syment.n_value * bfd_coff_linesz (bfd_ptr)); | |
757 | coff_symbol_ptr->symbol.section = | |
758 | coff_section_from_bfd_index (bfd_ptr, N_DEBUG); | |
759 | BFD_ASSERT (coff_symbol_ptr->symbol.flags & BSF_DEBUGGING); | |
760 | } | |
761 | for (i = 0; i < s->u.syment.n_numaux; i++) | |
762 | { | |
763 | combined_entry_type *a = s + i + 1; | |
764 | if (a->fix_tag) | |
765 | { | |
766 | a->u.auxent.x_sym.x_tagndx.l = | |
767 | a->u.auxent.x_sym.x_tagndx.p->offset; | |
768 | a->fix_tag = 0; | |
769 | } | |
770 | if (a->fix_end) | |
771 | { | |
772 | a->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l = | |
773 | a->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p->offset; | |
774 | a->fix_end = 0; | |
775 | } | |
776 | if (a->fix_scnlen) | |
777 | { | |
778 | a->u.auxent.x_csect.x_scnlen.l = | |
779 | a->u.auxent.x_csect.x_scnlen.p->offset; | |
780 | a->fix_scnlen = 0; | |
781 | } | |
782 | } | |
783 | } | |
784 | } | |
785 | } | |
786 | ||
787 | static void | |
c8e7bf0d NC |
788 | coff_fix_symbol_name (bfd *abfd, |
789 | asymbol *symbol, | |
790 | combined_entry_type *native, | |
791 | bfd_size_type *string_size_p, | |
792 | asection **debug_string_section_p, | |
793 | bfd_size_type *debug_string_size_p) | |
252b5132 RH |
794 | { |
795 | unsigned int name_length; | |
796 | union internal_auxent *auxent; | |
797 | char *name = (char *) (symbol->name); | |
798 | ||
c8e7bf0d | 799 | if (name == NULL) |
252b5132 | 800 | { |
c8e7bf0d | 801 | /* COFF symbols always have names, so we'll make one up. */ |
252b5132 RH |
802 | symbol->name = "strange"; |
803 | name = (char *) symbol->name; | |
804 | } | |
805 | name_length = strlen (name); | |
806 | ||
807 | if (native->u.syment.n_sclass == C_FILE | |
808 | && native->u.syment.n_numaux > 0) | |
809 | { | |
692b7d62 ILT |
810 | unsigned int filnmlen; |
811 | ||
7f6d05e8 CP |
812 | if (bfd_coff_force_symnames_in_strings (abfd)) |
813 | { | |
244148ad | 814 | native->u.syment._n._n_n._n_offset = |
7f6d05e8 CP |
815 | (*string_size_p + STRING_SIZE_SIZE); |
816 | native->u.syment._n._n_n._n_zeroes = 0; | |
817 | *string_size_p += 6; /* strlen(".file") + 1 */ | |
818 | } | |
819 | else | |
820 | strncpy (native->u.syment._n._n_name, ".file", SYMNMLEN); | |
821 | ||
252b5132 RH |
822 | auxent = &(native + 1)->u.auxent; |
823 | ||
692b7d62 ILT |
824 | filnmlen = bfd_coff_filnmlen (abfd); |
825 | ||
252b5132 RH |
826 | if (bfd_coff_long_filenames (abfd)) |
827 | { | |
692b7d62 | 828 | if (name_length <= filnmlen) |
c8e7bf0d | 829 | strncpy (auxent->x_file.x_fname, name, filnmlen); |
252b5132 RH |
830 | else |
831 | { | |
832 | auxent->x_file.x_n.x_offset = *string_size_p + STRING_SIZE_SIZE; | |
833 | auxent->x_file.x_n.x_zeroes = 0; | |
834 | *string_size_p += name_length + 1; | |
835 | } | |
836 | } | |
837 | else | |
838 | { | |
692b7d62 ILT |
839 | strncpy (auxent->x_file.x_fname, name, filnmlen); |
840 | if (name_length > filnmlen) | |
841 | name[filnmlen] = '\0'; | |
252b5132 RH |
842 | } |
843 | } | |
844 | else | |
845 | { | |
7f6d05e8 | 846 | if (name_length <= SYMNMLEN && !bfd_coff_force_symnames_in_strings (abfd)) |
c8e7bf0d NC |
847 | /* This name will fit into the symbol neatly. */ |
848 | strncpy (native->u.syment._n._n_name, symbol->name, SYMNMLEN); | |
849 | ||
252b5132 RH |
850 | else if (!bfd_coff_symname_in_debug (abfd, &native->u.syment)) |
851 | { | |
852 | native->u.syment._n._n_n._n_offset = (*string_size_p | |
853 | + STRING_SIZE_SIZE); | |
854 | native->u.syment._n._n_n._n_zeroes = 0; | |
855 | *string_size_p += name_length + 1; | |
856 | } | |
857 | else | |
858 | { | |
dc810e39 | 859 | file_ptr filepos; |
7f6d05e8 CP |
860 | bfd_byte buf[4]; |
861 | int prefix_len = bfd_coff_debug_string_prefix_length (abfd); | |
252b5132 RH |
862 | |
863 | /* This name should be written into the .debug section. For | |
864 | some reason each name is preceded by a two byte length | |
865 | and also followed by a null byte. FIXME: We assume that | |
866 | the .debug section has already been created, and that it | |
867 | is large enough. */ | |
868 | if (*debug_string_section_p == (asection *) NULL) | |
869 | *debug_string_section_p = bfd_get_section_by_name (abfd, ".debug"); | |
870 | filepos = bfd_tell (abfd); | |
7f6d05e8 | 871 | if (prefix_len == 4) |
dc810e39 | 872 | bfd_put_32 (abfd, (bfd_vma) (name_length + 1), buf); |
7f6d05e8 | 873 | else |
dc810e39 | 874 | bfd_put_16 (abfd, (bfd_vma) (name_length + 1), buf); |
7f6d05e8 | 875 | |
252b5132 RH |
876 | if (!bfd_set_section_contents (abfd, |
877 | *debug_string_section_p, | |
c8e7bf0d | 878 | (void *) buf, |
252b5132 | 879 | (file_ptr) *debug_string_size_p, |
7f6d05e8 | 880 | (bfd_size_type) prefix_len) |
252b5132 RH |
881 | || !bfd_set_section_contents (abfd, |
882 | *debug_string_section_p, | |
c8e7bf0d | 883 | (void *) symbol->name, |
dc810e39 AM |
884 | (file_ptr) (*debug_string_size_p |
885 | + prefix_len), | |
252b5132 RH |
886 | (bfd_size_type) name_length + 1)) |
887 | abort (); | |
888 | if (bfd_seek (abfd, filepos, SEEK_SET) != 0) | |
889 | abort (); | |
244148ad | 890 | native->u.syment._n._n_n._n_offset = |
7f6d05e8 | 891 | *debug_string_size_p + prefix_len; |
252b5132 | 892 | native->u.syment._n._n_n._n_zeroes = 0; |
7f6d05e8 | 893 | *debug_string_size_p += name_length + 1 + prefix_len; |
252b5132 RH |
894 | } |
895 | } | |
896 | } | |
897 | ||
898 | /* We need to keep track of the symbol index so that when we write out | |
899 | the relocs we can get the index for a symbol. This method is a | |
900 | hack. FIXME. */ | |
901 | ||
902 | #define set_index(symbol, idx) ((symbol)->udata.i = (idx)) | |
903 | ||
904 | /* Write a symbol out to a COFF file. */ | |
905 | ||
b34976b6 | 906 | static bfd_boolean |
c8e7bf0d NC |
907 | coff_write_symbol (bfd *abfd, |
908 | asymbol *symbol, | |
909 | combined_entry_type *native, | |
910 | bfd_vma *written, | |
911 | bfd_size_type *string_size_p, | |
912 | asection **debug_string_section_p, | |
913 | bfd_size_type *debug_string_size_p) | |
252b5132 RH |
914 | { |
915 | unsigned int numaux = native->u.syment.n_numaux; | |
916 | int type = native->u.syment.n_type; | |
a50b1753 | 917 | int n_sclass = (int) native->u.syment.n_sclass; |
88e59394 DK |
918 | asection *output_section = symbol->section->output_section |
919 | ? symbol->section->output_section | |
920 | : symbol->section; | |
c8e7bf0d | 921 | void * buf; |
252b5132 RH |
922 | bfd_size_type symesz; |
923 | ||
924 | if (native->u.syment.n_sclass == C_FILE) | |
925 | symbol->flags |= BSF_DEBUGGING; | |
926 | ||
927 | if (symbol->flags & BSF_DEBUGGING | |
928 | && bfd_is_abs_section (symbol->section)) | |
c8e7bf0d NC |
929 | native->u.syment.n_scnum = N_DEBUG; |
930 | ||
252b5132 | 931 | else if (bfd_is_abs_section (symbol->section)) |
c8e7bf0d NC |
932 | native->u.syment.n_scnum = N_ABS; |
933 | ||
252b5132 | 934 | else if (bfd_is_und_section (symbol->section)) |
c8e7bf0d NC |
935 | native->u.syment.n_scnum = N_UNDEF; |
936 | ||
252b5132 | 937 | else |
c8e7bf0d | 938 | native->u.syment.n_scnum = |
88e59394 | 939 | output_section->target_index; |
252b5132 RH |
940 | |
941 | coff_fix_symbol_name (abfd, symbol, native, string_size_p, | |
942 | debug_string_section_p, debug_string_size_p); | |
943 | ||
944 | symesz = bfd_coff_symesz (abfd); | |
945 | buf = bfd_alloc (abfd, symesz); | |
946 | if (!buf) | |
b34976b6 | 947 | return FALSE; |
252b5132 | 948 | bfd_coff_swap_sym_out (abfd, &native->u.syment, buf); |
dc810e39 | 949 | if (bfd_bwrite (buf, symesz, abfd) != symesz) |
b34976b6 | 950 | return FALSE; |
252b5132 RH |
951 | bfd_release (abfd, buf); |
952 | ||
953 | if (native->u.syment.n_numaux > 0) | |
954 | { | |
955 | bfd_size_type auxesz; | |
956 | unsigned int j; | |
957 | ||
958 | auxesz = bfd_coff_auxesz (abfd); | |
959 | buf = bfd_alloc (abfd, auxesz); | |
960 | if (!buf) | |
b34976b6 | 961 | return FALSE; |
252b5132 RH |
962 | for (j = 0; j < native->u.syment.n_numaux; j++) |
963 | { | |
964 | bfd_coff_swap_aux_out (abfd, | |
965 | &((native + j + 1)->u.auxent), | |
96d56e9f | 966 | type, n_sclass, (int) j, |
252b5132 RH |
967 | native->u.syment.n_numaux, |
968 | buf); | |
dc810e39 | 969 | if (bfd_bwrite (buf, auxesz, abfd) != auxesz) |
b34976b6 | 970 | return FALSE; |
252b5132 RH |
971 | } |
972 | bfd_release (abfd, buf); | |
973 | } | |
974 | ||
975 | /* Store the index for use when we write out the relocs. */ | |
976 | set_index (symbol, *written); | |
977 | ||
978 | *written += numaux + 1; | |
b34976b6 | 979 | return TRUE; |
252b5132 RH |
980 | } |
981 | ||
982 | /* Write out a symbol to a COFF file that does not come from a COFF | |
983 | file originally. This symbol may have been created by the linker, | |
984 | or we may be linking a non COFF file to a COFF file. */ | |
985 | ||
e7ebb214 | 986 | bfd_boolean |
c8e7bf0d NC |
987 | coff_write_alien_symbol (bfd *abfd, |
988 | asymbol *symbol, | |
e7ebb214 | 989 | struct internal_syment *isym, |
c8e7bf0d NC |
990 | bfd_vma *written, |
991 | bfd_size_type *string_size_p, | |
992 | asection **debug_string_section_p, | |
993 | bfd_size_type *debug_string_size_p) | |
252b5132 RH |
994 | { |
995 | combined_entry_type *native; | |
e7ebb214 | 996 | combined_entry_type dummy[2]; |
88e59394 DK |
997 | asection *output_section = symbol->section->output_section |
998 | ? symbol->section->output_section | |
999 | : symbol->section; | |
07c7ed6d | 1000 | struct bfd_link_info *link_info = coff_data (abfd)->link_info; |
e7ebb214 | 1001 | bfd_boolean ret; |
252b5132 | 1002 | |
07c7ed6d KT |
1003 | if ((!link_info || link_info->strip_discarded) |
1004 | && !bfd_is_abs_section (symbol->section) | |
1005 | && symbol->section->output_section == bfd_abs_section_ptr) | |
1006 | { | |
1007 | symbol->name = ""; | |
e7ebb214 JB |
1008 | if (isym != NULL) |
1009 | memset (isym, 0, sizeof(*isym)); | |
07c7ed6d KT |
1010 | return TRUE; |
1011 | } | |
e7ebb214 | 1012 | native = dummy; |
252b5132 RH |
1013 | native->u.syment.n_type = T_NULL; |
1014 | native->u.syment.n_flags = 0; | |
e7ebb214 | 1015 | native->u.syment.n_numaux = 0; |
252b5132 RH |
1016 | if (bfd_is_und_section (symbol->section)) |
1017 | { | |
1018 | native->u.syment.n_scnum = N_UNDEF; | |
1019 | native->u.syment.n_value = symbol->value; | |
1020 | } | |
1021 | else if (bfd_is_com_section (symbol->section)) | |
1022 | { | |
1023 | native->u.syment.n_scnum = N_UNDEF; | |
1024 | native->u.syment.n_value = symbol->value; | |
1025 | } | |
e7ebb214 JB |
1026 | else if (symbol->flags & BSF_FILE) |
1027 | { | |
1028 | native->u.syment.n_scnum = N_DEBUG; | |
1029 | native->u.syment.n_numaux = 1; | |
1030 | } | |
252b5132 RH |
1031 | else if (symbol->flags & BSF_DEBUGGING) |
1032 | { | |
1033 | /* There isn't much point to writing out a debugging symbol | |
1034 | unless we are prepared to convert it into COFF debugging | |
1035 | format. So, we just ignore them. We must clobber the symbol | |
1036 | name to keep it from being put in the string table. */ | |
1037 | symbol->name = ""; | |
e7ebb214 JB |
1038 | if (isym != NULL) |
1039 | memset (isym, 0, sizeof(*isym)); | |
b34976b6 | 1040 | return TRUE; |
252b5132 RH |
1041 | } |
1042 | else | |
1043 | { | |
88e59394 | 1044 | native->u.syment.n_scnum = output_section->target_index; |
252b5132 RH |
1045 | native->u.syment.n_value = (symbol->value |
1046 | + symbol->section->output_offset); | |
1047 | if (! obj_pe (abfd)) | |
88e59394 | 1048 | native->u.syment.n_value += output_section->vma; |
252b5132 | 1049 | |
08da05b0 | 1050 | /* Copy the any flags from the file header into the symbol. |
252b5132 RH |
1051 | FIXME: Why? */ |
1052 | { | |
1053 | coff_symbol_type *c = coff_symbol_from (abfd, symbol); | |
1054 | if (c != (coff_symbol_type *) NULL) | |
1055 | native->u.syment.n_flags = bfd_asymbol_bfd (&c->symbol)->flags; | |
1056 | } | |
1057 | } | |
1058 | ||
1059 | native->u.syment.n_type = 0; | |
e7ebb214 JB |
1060 | if (symbol->flags & BSF_FILE) |
1061 | native->u.syment.n_sclass = C_FILE; | |
1062 | else if (symbol->flags & BSF_LOCAL) | |
252b5132 RH |
1063 | native->u.syment.n_sclass = C_STAT; |
1064 | else if (symbol->flags & BSF_WEAK) | |
1065 | native->u.syment.n_sclass = obj_pe (abfd) ? C_NT_WEAK : C_WEAKEXT; | |
1066 | else | |
1067 | native->u.syment.n_sclass = C_EXT; | |
252b5132 | 1068 | |
e7ebb214 JB |
1069 | ret = coff_write_symbol (abfd, symbol, native, written, string_size_p, |
1070 | debug_string_section_p, debug_string_size_p); | |
1071 | if (isym != NULL) | |
1072 | *isym = native->u.syment; | |
1073 | return ret; | |
252b5132 RH |
1074 | } |
1075 | ||
1076 | /* Write a native symbol to a COFF file. */ | |
1077 | ||
b34976b6 | 1078 | static bfd_boolean |
c8e7bf0d NC |
1079 | coff_write_native_symbol (bfd *abfd, |
1080 | coff_symbol_type *symbol, | |
1081 | bfd_vma *written, | |
1082 | bfd_size_type *string_size_p, | |
1083 | asection **debug_string_section_p, | |
1084 | bfd_size_type *debug_string_size_p) | |
252b5132 RH |
1085 | { |
1086 | combined_entry_type *native = symbol->native; | |
1087 | alent *lineno = symbol->lineno; | |
07c7ed6d KT |
1088 | struct bfd_link_info *link_info = coff_data (abfd)->link_info; |
1089 | ||
1090 | if ((!link_info || link_info->strip_discarded) | |
1091 | && !bfd_is_abs_section (symbol->symbol.section) | |
1092 | && symbol->symbol.section->output_section == bfd_abs_section_ptr) | |
1093 | { | |
1094 | symbol->symbol.name = ""; | |
1095 | return TRUE; | |
1096 | } | |
252b5132 RH |
1097 | |
1098 | /* If this symbol has an associated line number, we must store the | |
1099 | symbol index in the line number field. We also tag the auxent to | |
1100 | point to the right place in the lineno table. */ | |
1101 | if (lineno && !symbol->done_lineno && symbol->symbol.section->owner != NULL) | |
1102 | { | |
1103 | unsigned int count = 0; | |
c8e7bf0d | 1104 | |
252b5132 RH |
1105 | lineno[count].u.offset = *written; |
1106 | if (native->u.syment.n_numaux) | |
1107 | { | |
1108 | union internal_auxent *a = &((native + 1)->u.auxent); | |
1109 | ||
1110 | a->x_sym.x_fcnary.x_fcn.x_lnnoptr = | |
1111 | symbol->symbol.section->output_section->moving_line_filepos; | |
1112 | } | |
1113 | ||
1114 | /* Count and relocate all other linenumbers. */ | |
1115 | count++; | |
1116 | while (lineno[count].line_number != 0) | |
1117 | { | |
252b5132 RH |
1118 | lineno[count].u.offset += |
1119 | (symbol->symbol.section->output_section->vma | |
1120 | + symbol->symbol.section->output_offset); | |
252b5132 RH |
1121 | count++; |
1122 | } | |
b34976b6 | 1123 | symbol->done_lineno = TRUE; |
252b5132 | 1124 | |
84c254c6 NC |
1125 | if (! bfd_is_const_section (symbol->symbol.section->output_section)) |
1126 | symbol->symbol.section->output_section->moving_line_filepos += | |
1127 | count * bfd_coff_linesz (abfd); | |
252b5132 RH |
1128 | } |
1129 | ||
1130 | return coff_write_symbol (abfd, &(symbol->symbol), native, written, | |
1131 | string_size_p, debug_string_section_p, | |
1132 | debug_string_size_p); | |
1133 | } | |
1134 | ||
e144674a NC |
1135 | static void |
1136 | null_error_handler (const char * fmt ATTRIBUTE_UNUSED, ...) | |
1137 | { | |
1138 | } | |
1139 | ||
252b5132 RH |
1140 | /* Write out the COFF symbols. */ |
1141 | ||
b34976b6 | 1142 | bfd_boolean |
c8e7bf0d | 1143 | coff_write_symbols (bfd *abfd) |
252b5132 RH |
1144 | { |
1145 | bfd_size_type string_size; | |
1146 | asection *debug_string_section; | |
1147 | bfd_size_type debug_string_size; | |
1148 | unsigned int i; | |
1149 | unsigned int limit = bfd_get_symcount (abfd); | |
f075ee0c | 1150 | bfd_vma written = 0; |
252b5132 RH |
1151 | asymbol **p; |
1152 | ||
1153 | string_size = 0; | |
1154 | debug_string_section = NULL; | |
1155 | debug_string_size = 0; | |
1156 | ||
1157 | /* If this target supports long section names, they must be put into | |
1158 | the string table. This is supported by PE. This code must | |
1159 | handle section names just as they are handled in | |
1160 | coff_write_object_contents. */ | |
1161 | if (bfd_coff_long_section_names (abfd)) | |
1162 | { | |
1163 | asection *o; | |
1164 | ||
1165 | for (o = abfd->sections; o != NULL; o = o->next) | |
1166 | { | |
1167 | size_t len; | |
1168 | ||
1169 | len = strlen (o->name); | |
1170 | if (len > SCNNMLEN) | |
1171 | string_size += len + 1; | |
1172 | } | |
1173 | } | |
1174 | ||
c8e7bf0d | 1175 | /* Seek to the right place. */ |
252b5132 | 1176 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0) |
b34976b6 | 1177 | return FALSE; |
252b5132 | 1178 | |
c8e7bf0d | 1179 | /* Output all the symbols we have. */ |
252b5132 RH |
1180 | written = 0; |
1181 | for (p = abfd->outsymbols, i = 0; i < limit; i++, p++) | |
1182 | { | |
1183 | asymbol *symbol = *p; | |
1184 | coff_symbol_type *c_symbol = coff_symbol_from (abfd, symbol); | |
1185 | ||
1186 | if (c_symbol == (coff_symbol_type *) NULL | |
1187 | || c_symbol->native == (combined_entry_type *) NULL) | |
1188 | { | |
e7ebb214 JB |
1189 | if (!coff_write_alien_symbol (abfd, symbol, NULL, &written, |
1190 | &string_size, &debug_string_section, | |
252b5132 | 1191 | &debug_string_size)) |
b34976b6 | 1192 | return FALSE; |
252b5132 RH |
1193 | } |
1194 | else | |
1195 | { | |
e144674a NC |
1196 | if (coff_backend_info (abfd)->_bfd_coff_classify_symbol != NULL) |
1197 | { | |
1198 | bfd_error_handler_type current_error_handler; | |
96d56e9f | 1199 | enum coff_symbol_classification sym_class; |
e144674a NC |
1200 | unsigned char *n_sclass; |
1201 | ||
1202 | /* Suppress error reporting by bfd_coff_classify_symbol. | |
1203 | Error messages can be generated when we are processing a local | |
1204 | symbol which has no associated section and we do not have to | |
1205 | worry about this, all we need to know is that it is local. */ | |
1206 | current_error_handler = bfd_set_error_handler (null_error_handler); | |
96d56e9f NC |
1207 | sym_class = bfd_coff_classify_symbol (abfd, |
1208 | &c_symbol->native->u.syment); | |
e144674a | 1209 | (void) bfd_set_error_handler (current_error_handler); |
96d56e9f | 1210 | |
e144674a NC |
1211 | n_sclass = &c_symbol->native->u.syment.n_sclass; |
1212 | ||
1213 | /* If the symbol class has been changed (eg objcopy/ld script/etc) | |
1214 | we cannot retain the existing sclass from the original symbol. | |
1215 | Weak symbols only have one valid sclass, so just set it always. | |
1216 | If it is not local class and should be, set it C_STAT. | |
1217 | If it is global and not classified as global, or if it is | |
1218 | weak (which is also classified as global), set it C_EXT. */ | |
1219 | ||
1220 | if (symbol->flags & BSF_WEAK) | |
1221 | *n_sclass = obj_pe (abfd) ? C_NT_WEAK : C_WEAKEXT; | |
96d56e9f | 1222 | else if (symbol->flags & BSF_LOCAL && sym_class != COFF_SYMBOL_LOCAL) |
e144674a NC |
1223 | *n_sclass = C_STAT; |
1224 | else if (symbol->flags & BSF_GLOBAL | |
96d56e9f | 1225 | && (sym_class != COFF_SYMBOL_GLOBAL |
e144674a NC |
1226 | #ifdef COFF_WITH_PE |
1227 | || *n_sclass == C_NT_WEAK | |
1228 | #endif | |
1229 | || *n_sclass == C_WEAKEXT)) | |
1230 | c_symbol->native->u.syment.n_sclass = C_EXT; | |
1231 | } | |
1232 | ||
252b5132 RH |
1233 | if (!coff_write_native_symbol (abfd, c_symbol, &written, |
1234 | &string_size, &debug_string_section, | |
1235 | &debug_string_size)) | |
b34976b6 | 1236 | return FALSE; |
252b5132 RH |
1237 | } |
1238 | } | |
1239 | ||
1240 | obj_raw_syment_count (abfd) = written; | |
1241 | ||
c8e7bf0d | 1242 | /* Now write out strings. */ |
252b5132 RH |
1243 | if (string_size != 0) |
1244 | { | |
1245 | unsigned int size = string_size + STRING_SIZE_SIZE; | |
1246 | bfd_byte buffer[STRING_SIZE_SIZE]; | |
1247 | ||
1248 | #if STRING_SIZE_SIZE == 4 | |
dc810e39 | 1249 | H_PUT_32 (abfd, size, buffer); |
252b5132 | 1250 | #else |
dc810e39 | 1251 | #error Change H_PUT_32 |
252b5132 | 1252 | #endif |
c8e7bf0d | 1253 | if (bfd_bwrite ((void *) buffer, (bfd_size_type) sizeof (buffer), abfd) |
dc810e39 | 1254 | != sizeof (buffer)) |
b34976b6 | 1255 | return FALSE; |
252b5132 RH |
1256 | |
1257 | /* Handle long section names. This code must handle section | |
1258 | names just as they are handled in coff_write_object_contents. */ | |
1259 | if (bfd_coff_long_section_names (abfd)) | |
1260 | { | |
1261 | asection *o; | |
1262 | ||
1263 | for (o = abfd->sections; o != NULL; o = o->next) | |
1264 | { | |
1265 | size_t len; | |
1266 | ||
1267 | len = strlen (o->name); | |
1268 | if (len > SCNNMLEN) | |
1269 | { | |
dc810e39 AM |
1270 | if (bfd_bwrite (o->name, (bfd_size_type) (len + 1), abfd) |
1271 | != len + 1) | |
b34976b6 | 1272 | return FALSE; |
252b5132 RH |
1273 | } |
1274 | } | |
1275 | } | |
1276 | ||
1277 | for (p = abfd->outsymbols, i = 0; | |
1278 | i < limit; | |
1279 | i++, p++) | |
1280 | { | |
1281 | asymbol *q = *p; | |
1282 | size_t name_length = strlen (q->name); | |
1283 | coff_symbol_type *c_symbol = coff_symbol_from (abfd, q); | |
1284 | size_t maxlen; | |
1285 | ||
1286 | /* Figure out whether the symbol name should go in the string | |
1287 | table. Symbol names that are short enough are stored | |
1288 | directly in the syment structure. File names permit a | |
1289 | different, longer, length in the syment structure. On | |
1290 | XCOFF, some symbol names are stored in the .debug section | |
1291 | rather than in the string table. */ | |
1292 | ||
1293 | if (c_symbol == NULL | |
1294 | || c_symbol->native == NULL) | |
c8e7bf0d NC |
1295 | /* This is not a COFF symbol, so it certainly is not a |
1296 | file name, nor does it go in the .debug section. */ | |
1297 | maxlen = bfd_coff_force_symnames_in_strings (abfd) ? 0 : SYMNMLEN; | |
1298 | ||
252b5132 RH |
1299 | else if (bfd_coff_symname_in_debug (abfd, |
1300 | &c_symbol->native->u.syment)) | |
c8e7bf0d NC |
1301 | /* This symbol name is in the XCOFF .debug section. |
1302 | Don't write it into the string table. */ | |
1303 | maxlen = name_length; | |
1304 | ||
252b5132 RH |
1305 | else if (c_symbol->native->u.syment.n_sclass == C_FILE |
1306 | && c_symbol->native->u.syment.n_numaux > 0) | |
7f6d05e8 | 1307 | { |
244148ad | 1308 | if (bfd_coff_force_symnames_in_strings (abfd)) |
dc810e39 AM |
1309 | { |
1310 | if (bfd_bwrite (".file", (bfd_size_type) 6, abfd) != 6) | |
b34976b6 | 1311 | return FALSE; |
dc810e39 | 1312 | } |
7f6d05e8 CP |
1313 | maxlen = bfd_coff_filnmlen (abfd); |
1314 | } | |
252b5132 | 1315 | else |
7f6d05e8 | 1316 | maxlen = bfd_coff_force_symnames_in_strings (abfd) ? 0 : SYMNMLEN; |
252b5132 RH |
1317 | |
1318 | if (name_length > maxlen) | |
1319 | { | |
c8e7bf0d | 1320 | if (bfd_bwrite ((void *) (q->name), (bfd_size_type) name_length + 1, |
dc810e39 | 1321 | abfd) != name_length + 1) |
b34976b6 | 1322 | return FALSE; |
252b5132 RH |
1323 | } |
1324 | } | |
1325 | } | |
1326 | else | |
1327 | { | |
1328 | /* We would normally not write anything here, but we'll write | |
1329 | out 4 so that any stupid coff reader which tries to read the | |
1330 | string table even when there isn't one won't croak. */ | |
1331 | unsigned int size = STRING_SIZE_SIZE; | |
1332 | bfd_byte buffer[STRING_SIZE_SIZE]; | |
1333 | ||
1334 | #if STRING_SIZE_SIZE == 4 | |
dc810e39 | 1335 | H_PUT_32 (abfd, size, buffer); |
252b5132 | 1336 | #else |
dc810e39 | 1337 | #error Change H_PUT_32 |
252b5132 | 1338 | #endif |
c8e7bf0d | 1339 | if (bfd_bwrite ((void *) buffer, (bfd_size_type) STRING_SIZE_SIZE, abfd) |
252b5132 | 1340 | != STRING_SIZE_SIZE) |
b34976b6 | 1341 | return FALSE; |
252b5132 RH |
1342 | } |
1343 | ||
1344 | /* Make sure the .debug section was created to be the correct size. | |
1345 | We should create it ourselves on the fly, but we don't because | |
1346 | BFD won't let us write to any section until we know how large all | |
1347 | the sections are. We could still do it by making another pass | |
1348 | over the symbols. FIXME. */ | |
1349 | BFD_ASSERT (debug_string_size == 0 | |
1350 | || (debug_string_section != (asection *) NULL | |
1351 | && (BFD_ALIGN (debug_string_size, | |
1352 | 1 << debug_string_section->alignment_power) | |
eea6121a | 1353 | == debug_string_section->size))); |
252b5132 | 1354 | |
b34976b6 | 1355 | return TRUE; |
252b5132 RH |
1356 | } |
1357 | ||
b34976b6 | 1358 | bfd_boolean |
c8e7bf0d | 1359 | coff_write_linenumbers (bfd *abfd) |
252b5132 RH |
1360 | { |
1361 | asection *s; | |
1362 | bfd_size_type linesz; | |
c8e7bf0d | 1363 | void * buff; |
252b5132 RH |
1364 | |
1365 | linesz = bfd_coff_linesz (abfd); | |
1366 | buff = bfd_alloc (abfd, linesz); | |
1367 | if (!buff) | |
b34976b6 | 1368 | return FALSE; |
252b5132 RH |
1369 | for (s = abfd->sections; s != (asection *) NULL; s = s->next) |
1370 | { | |
1371 | if (s->lineno_count) | |
1372 | { | |
1373 | asymbol **q = abfd->outsymbols; | |
1374 | if (bfd_seek (abfd, s->line_filepos, SEEK_SET) != 0) | |
b34976b6 | 1375 | return FALSE; |
c8e7bf0d | 1376 | /* Find all the linenumbers in this section. */ |
252b5132 RH |
1377 | while (*q) |
1378 | { | |
1379 | asymbol *p = *q; | |
1380 | if (p->section->output_section == s) | |
1381 | { | |
1382 | alent *l = | |
1383 | BFD_SEND (bfd_asymbol_bfd (p), _get_lineno, | |
1384 | (bfd_asymbol_bfd (p), p)); | |
1385 | if (l) | |
1386 | { | |
c8e7bf0d | 1387 | /* Found a linenumber entry, output. */ |
252b5132 | 1388 | struct internal_lineno out; |
c8e7bf0d | 1389 | memset ((void *) & out, 0, sizeof (out)); |
252b5132 RH |
1390 | out.l_lnno = 0; |
1391 | out.l_addr.l_symndx = l->u.offset; | |
1392 | bfd_coff_swap_lineno_out (abfd, &out, buff); | |
dc810e39 AM |
1393 | if (bfd_bwrite (buff, (bfd_size_type) linesz, abfd) |
1394 | != linesz) | |
b34976b6 | 1395 | return FALSE; |
252b5132 RH |
1396 | l++; |
1397 | while (l->line_number) | |
1398 | { | |
1399 | out.l_lnno = l->line_number; | |
1400 | out.l_addr.l_symndx = l->u.offset; | |
1401 | bfd_coff_swap_lineno_out (abfd, &out, buff); | |
dc810e39 AM |
1402 | if (bfd_bwrite (buff, (bfd_size_type) linesz, abfd) |
1403 | != linesz) | |
b34976b6 | 1404 | return FALSE; |
252b5132 RH |
1405 | l++; |
1406 | } | |
1407 | } | |
1408 | } | |
1409 | q++; | |
1410 | } | |
1411 | } | |
1412 | } | |
1413 | bfd_release (abfd, buff); | |
b34976b6 | 1414 | return TRUE; |
252b5132 RH |
1415 | } |
1416 | ||
252b5132 | 1417 | alent * |
c8e7bf0d | 1418 | coff_get_lineno (bfd *ignore_abfd ATTRIBUTE_UNUSED, asymbol *symbol) |
252b5132 RH |
1419 | { |
1420 | return coffsymbol (symbol)->lineno; | |
1421 | } | |
1422 | ||
252b5132 RH |
1423 | /* This function transforms the offsets into the symbol table into |
1424 | pointers to syments. */ | |
1425 | ||
1426 | static void | |
c8e7bf0d NC |
1427 | coff_pointerize_aux (bfd *abfd, |
1428 | combined_entry_type *table_base, | |
1429 | combined_entry_type *symbol, | |
1430 | unsigned int indaux, | |
1431 | combined_entry_type *auxent) | |
252b5132 RH |
1432 | { |
1433 | unsigned int type = symbol->u.syment.n_type; | |
96d56e9f | 1434 | unsigned int n_sclass = symbol->u.syment.n_sclass; |
252b5132 RH |
1435 | |
1436 | if (coff_backend_info (abfd)->_bfd_coff_pointerize_aux_hook) | |
1437 | { | |
1438 | if ((*coff_backend_info (abfd)->_bfd_coff_pointerize_aux_hook) | |
1439 | (abfd, table_base, symbol, indaux, auxent)) | |
1440 | return; | |
1441 | } | |
1442 | ||
c8e7bf0d | 1443 | /* Don't bother if this is a file or a section. */ |
96d56e9f | 1444 | if (n_sclass == C_STAT && type == T_NULL) |
252b5132 | 1445 | return; |
96d56e9f | 1446 | if (n_sclass == C_FILE) |
252b5132 RH |
1447 | return; |
1448 | ||
c8e7bf0d NC |
1449 | /* Otherwise patch up. */ |
1450 | #define N_TMASK coff_data (abfd)->local_n_tmask | |
252b5132 | 1451 | #define N_BTSHFT coff_data (abfd)->local_n_btshft |
c8e7bf0d | 1452 | |
96d56e9f NC |
1453 | if ((ISFCN (type) || ISTAG (n_sclass) || n_sclass == C_BLOCK |
1454 | || n_sclass == C_FCN) | |
252b5132 RH |
1455 | && auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l > 0) |
1456 | { | |
1457 | auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p = | |
1458 | table_base + auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l; | |
1459 | auxent->fix_end = 1; | |
1460 | } | |
1461 | /* A negative tagndx is meaningless, but the SCO 3.2v4 cc can | |
1462 | generate one, so we must be careful to ignore it. */ | |
1463 | if (auxent->u.auxent.x_sym.x_tagndx.l > 0) | |
1464 | { | |
1465 | auxent->u.auxent.x_sym.x_tagndx.p = | |
1466 | table_base + auxent->u.auxent.x_sym.x_tagndx.l; | |
1467 | auxent->fix_tag = 1; | |
1468 | } | |
1469 | } | |
1470 | ||
1471 | /* Allocate space for the ".debug" section, and read it. | |
1472 | We did not read the debug section until now, because | |
244148ad | 1473 | we didn't want to go to the trouble until someone needed it. */ |
252b5132 RH |
1474 | |
1475 | static char * | |
c8e7bf0d | 1476 | build_debug_section (bfd *abfd) |
252b5132 RH |
1477 | { |
1478 | char *debug_section; | |
dc810e39 AM |
1479 | file_ptr position; |
1480 | bfd_size_type sec_size; | |
252b5132 RH |
1481 | |
1482 | asection *sect = bfd_get_section_by_name (abfd, ".debug"); | |
1483 | ||
1484 | if (!sect) | |
1485 | { | |
1486 | bfd_set_error (bfd_error_no_debug_section); | |
1487 | return NULL; | |
1488 | } | |
1489 | ||
eea6121a | 1490 | sec_size = sect->size; |
a50b1753 | 1491 | debug_section = (char *) bfd_alloc (abfd, sec_size); |
252b5132 RH |
1492 | if (debug_section == NULL) |
1493 | return NULL; | |
1494 | ||
244148ad | 1495 | /* Seek to the beginning of the `.debug' section and read it. |
252b5132 RH |
1496 | Save the current position first; it is needed by our caller. |
1497 | Then read debug section and reset the file pointer. */ | |
1498 | ||
1499 | position = bfd_tell (abfd); | |
1500 | if (bfd_seek (abfd, sect->filepos, SEEK_SET) != 0 | |
dc810e39 | 1501 | || bfd_bread (debug_section, sec_size, abfd) != sec_size |
252b5132 RH |
1502 | || bfd_seek (abfd, position, SEEK_SET) != 0) |
1503 | return NULL; | |
1504 | return debug_section; | |
1505 | } | |
1506 | ||
252b5132 RH |
1507 | /* Return a pointer to a malloc'd copy of 'name'. 'name' may not be |
1508 | \0-terminated, but will not exceed 'maxlen' characters. The copy *will* | |
1509 | be \0-terminated. */ | |
c8e7bf0d | 1510 | |
252b5132 | 1511 | static char * |
c8e7bf0d | 1512 | copy_name (bfd *abfd, char *name, size_t maxlen) |
252b5132 | 1513 | { |
dc810e39 | 1514 | size_t len; |
252b5132 RH |
1515 | char *newname; |
1516 | ||
1517 | for (len = 0; len < maxlen; ++len) | |
c8e7bf0d NC |
1518 | if (name[len] == '\0') |
1519 | break; | |
1520 | ||
a50b1753 | 1521 | if ((newname = (char *) bfd_alloc (abfd, (bfd_size_type) len + 1)) == NULL) |
c8e7bf0d | 1522 | return NULL; |
252b5132 | 1523 | |
252b5132 RH |
1524 | strncpy (newname, name, len); |
1525 | newname[len] = '\0'; | |
1526 | return newname; | |
1527 | } | |
1528 | ||
1529 | /* Read in the external symbols. */ | |
1530 | ||
b34976b6 | 1531 | bfd_boolean |
c8e7bf0d | 1532 | _bfd_coff_get_external_symbols (bfd *abfd) |
252b5132 RH |
1533 | { |
1534 | bfd_size_type symesz; | |
dc810e39 | 1535 | bfd_size_type size; |
c8e7bf0d | 1536 | void * syms; |
252b5132 RH |
1537 | |
1538 | if (obj_coff_external_syms (abfd) != NULL) | |
b34976b6 | 1539 | return TRUE; |
252b5132 RH |
1540 | |
1541 | symesz = bfd_coff_symesz (abfd); | |
1542 | ||
1543 | size = obj_raw_syment_count (abfd) * symesz; | |
353c5574 MS |
1544 | if (size == 0) |
1545 | return TRUE; | |
252b5132 | 1546 | |
c8e7bf0d | 1547 | syms = bfd_malloc (size); |
353c5574 | 1548 | if (syms == NULL) |
b34976b6 | 1549 | return FALSE; |
252b5132 RH |
1550 | |
1551 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0 | |
dc810e39 | 1552 | || bfd_bread (syms, size, abfd) != size) |
252b5132 RH |
1553 | { |
1554 | if (syms != NULL) | |
1555 | free (syms); | |
b34976b6 | 1556 | return FALSE; |
252b5132 RH |
1557 | } |
1558 | ||
1559 | obj_coff_external_syms (abfd) = syms; | |
1560 | ||
b34976b6 | 1561 | return TRUE; |
252b5132 RH |
1562 | } |
1563 | ||
1564 | /* Read in the external strings. The strings are not loaded until | |
1565 | they are needed. This is because we have no simple way of | |
1566 | detecting a missing string table in an archive. */ | |
1567 | ||
1568 | const char * | |
c8e7bf0d | 1569 | _bfd_coff_read_string_table (bfd *abfd) |
252b5132 RH |
1570 | { |
1571 | char extstrsize[STRING_SIZE_SIZE]; | |
dc810e39 | 1572 | bfd_size_type strsize; |
252b5132 | 1573 | char *strings; |
dc810e39 | 1574 | file_ptr pos; |
252b5132 RH |
1575 | |
1576 | if (obj_coff_strings (abfd) != NULL) | |
1577 | return obj_coff_strings (abfd); | |
1578 | ||
1579 | if (obj_sym_filepos (abfd) == 0) | |
1580 | { | |
1581 | bfd_set_error (bfd_error_no_symbols); | |
1582 | return NULL; | |
1583 | } | |
1584 | ||
dc810e39 AM |
1585 | pos = obj_sym_filepos (abfd); |
1586 | pos += obj_raw_syment_count (abfd) * bfd_coff_symesz (abfd); | |
1587 | if (bfd_seek (abfd, pos, SEEK_SET) != 0) | |
252b5132 | 1588 | return NULL; |
244148ad | 1589 | |
dc810e39 AM |
1590 | if (bfd_bread (extstrsize, (bfd_size_type) sizeof extstrsize, abfd) |
1591 | != sizeof extstrsize) | |
252b5132 RH |
1592 | { |
1593 | if (bfd_get_error () != bfd_error_file_truncated) | |
1594 | return NULL; | |
1595 | ||
1596 | /* There is no string table. */ | |
1597 | strsize = STRING_SIZE_SIZE; | |
1598 | } | |
1599 | else | |
1600 | { | |
1601 | #if STRING_SIZE_SIZE == 4 | |
dc810e39 | 1602 | strsize = H_GET_32 (abfd, extstrsize); |
252b5132 | 1603 | #else |
dc810e39 | 1604 | #error Change H_GET_32 |
252b5132 RH |
1605 | #endif |
1606 | } | |
1607 | ||
1608 | if (strsize < STRING_SIZE_SIZE) | |
1609 | { | |
1610 | (*_bfd_error_handler) | |
d003868e | 1611 | (_("%B: bad string table size %lu"), abfd, (unsigned long) strsize); |
252b5132 RH |
1612 | bfd_set_error (bfd_error_bad_value); |
1613 | return NULL; | |
1614 | } | |
1615 | ||
a50b1753 | 1616 | strings = (char *) bfd_malloc (strsize); |
252b5132 RH |
1617 | if (strings == NULL) |
1618 | return NULL; | |
1619 | ||
dc810e39 | 1620 | if (bfd_bread (strings + STRING_SIZE_SIZE, strsize - STRING_SIZE_SIZE, abfd) |
252b5132 RH |
1621 | != strsize - STRING_SIZE_SIZE) |
1622 | { | |
1623 | free (strings); | |
1624 | return NULL; | |
1625 | } | |
1626 | ||
1627 | obj_coff_strings (abfd) = strings; | |
1628 | ||
1629 | return strings; | |
1630 | } | |
1631 | ||
1632 | /* Free up the external symbols and strings read from a COFF file. */ | |
1633 | ||
b34976b6 | 1634 | bfd_boolean |
c8e7bf0d | 1635 | _bfd_coff_free_symbols (bfd *abfd) |
252b5132 RH |
1636 | { |
1637 | if (obj_coff_external_syms (abfd) != NULL | |
1638 | && ! obj_coff_keep_syms (abfd)) | |
1639 | { | |
1640 | free (obj_coff_external_syms (abfd)); | |
1641 | obj_coff_external_syms (abfd) = NULL; | |
1642 | } | |
1643 | if (obj_coff_strings (abfd) != NULL | |
1644 | && ! obj_coff_keep_strings (abfd)) | |
1645 | { | |
1646 | free (obj_coff_strings (abfd)); | |
1647 | obj_coff_strings (abfd) = NULL; | |
1648 | } | |
b34976b6 | 1649 | return TRUE; |
252b5132 RH |
1650 | } |
1651 | ||
1652 | /* Read a symbol table into freshly bfd_allocated memory, swap it, and | |
1653 | knit the symbol names into a normalized form. By normalized here I | |
1654 | mean that all symbols have an n_offset pointer that points to a null- | |
1655 | terminated string. */ | |
1656 | ||
1657 | combined_entry_type * | |
c8e7bf0d | 1658 | coff_get_normalized_symtab (bfd *abfd) |
252b5132 RH |
1659 | { |
1660 | combined_entry_type *internal; | |
1661 | combined_entry_type *internal_ptr; | |
1662 | combined_entry_type *symbol_ptr; | |
1663 | combined_entry_type *internal_end; | |
dc810e39 | 1664 | size_t symesz; |
252b5132 RH |
1665 | char *raw_src; |
1666 | char *raw_end; | |
1667 | const char *string_table = NULL; | |
1668 | char *debug_section = NULL; | |
dc810e39 | 1669 | bfd_size_type size; |
252b5132 RH |
1670 | |
1671 | if (obj_raw_syments (abfd) != NULL) | |
1672 | return obj_raw_syments (abfd); | |
1673 | ||
1674 | size = obj_raw_syment_count (abfd) * sizeof (combined_entry_type); | |
a50b1753 | 1675 | internal = (combined_entry_type *) bfd_zalloc (abfd, size); |
252b5132 RH |
1676 | if (internal == NULL && size != 0) |
1677 | return NULL; | |
1678 | internal_end = internal + obj_raw_syment_count (abfd); | |
1679 | ||
1680 | if (! _bfd_coff_get_external_symbols (abfd)) | |
1681 | return NULL; | |
1682 | ||
1683 | raw_src = (char *) obj_coff_external_syms (abfd); | |
1684 | ||
c8e7bf0d | 1685 | /* Mark the end of the symbols. */ |
252b5132 RH |
1686 | symesz = bfd_coff_symesz (abfd); |
1687 | raw_end = (char *) raw_src + obj_raw_syment_count (abfd) * symesz; | |
1688 | ||
1689 | /* FIXME SOMEDAY. A string table size of zero is very weird, but | |
1690 | probably possible. If one shows up, it will probably kill us. */ | |
1691 | ||
c8e7bf0d | 1692 | /* Swap all the raw entries. */ |
252b5132 RH |
1693 | for (internal_ptr = internal; |
1694 | raw_src < raw_end; | |
1695 | raw_src += symesz, internal_ptr++) | |
1696 | { | |
1697 | ||
1698 | unsigned int i; | |
c8e7bf0d NC |
1699 | bfd_coff_swap_sym_in (abfd, (void *) raw_src, |
1700 | (void *) & internal_ptr->u.syment); | |
252b5132 RH |
1701 | symbol_ptr = internal_ptr; |
1702 | ||
1703 | for (i = 0; | |
1704 | i < symbol_ptr->u.syment.n_numaux; | |
1705 | i++) | |
1706 | { | |
1707 | internal_ptr++; | |
1708 | raw_src += symesz; | |
c8e7bf0d | 1709 | bfd_coff_swap_aux_in (abfd, (void *) raw_src, |
252b5132 RH |
1710 | symbol_ptr->u.syment.n_type, |
1711 | symbol_ptr->u.syment.n_sclass, | |
dc810e39 | 1712 | (int) i, symbol_ptr->u.syment.n_numaux, |
252b5132 RH |
1713 | &(internal_ptr->u.auxent)); |
1714 | coff_pointerize_aux (abfd, internal, symbol_ptr, i, | |
1715 | internal_ptr); | |
1716 | } | |
1717 | } | |
1718 | ||
1719 | /* Free the raw symbols, but not the strings (if we have them). */ | |
b34976b6 | 1720 | obj_coff_keep_strings (abfd) = TRUE; |
252b5132 RH |
1721 | if (! _bfd_coff_free_symbols (abfd)) |
1722 | return NULL; | |
1723 | ||
1724 | for (internal_ptr = internal; internal_ptr < internal_end; | |
1725 | internal_ptr++) | |
1726 | { | |
1727 | if (internal_ptr->u.syment.n_sclass == C_FILE | |
1728 | && internal_ptr->u.syment.n_numaux > 0) | |
1729 | { | |
c8e7bf0d NC |
1730 | /* Make a file symbol point to the name in the auxent, since |
1731 | the text ".file" is redundant. */ | |
252b5132 RH |
1732 | if ((internal_ptr + 1)->u.auxent.x_file.x_n.x_zeroes == 0) |
1733 | { | |
c8e7bf0d | 1734 | /* The filename is a long one, point into the string table. */ |
252b5132 RH |
1735 | if (string_table == NULL) |
1736 | { | |
1737 | string_table = _bfd_coff_read_string_table (abfd); | |
1738 | if (string_table == NULL) | |
1739 | return NULL; | |
1740 | } | |
1741 | ||
1742 | internal_ptr->u.syment._n._n_n._n_offset = | |
d2df793a | 1743 | ((bfd_hostptr_t) |
252b5132 RH |
1744 | (string_table |
1745 | + (internal_ptr + 1)->u.auxent.x_file.x_n.x_offset)); | |
1746 | } | |
1747 | else | |
1748 | { | |
7bb9db4d ILT |
1749 | /* Ordinary short filename, put into memory anyway. The |
1750 | Microsoft PE tools sometimes store a filename in | |
1751 | multiple AUX entries. */ | |
ec0ef80e DD |
1752 | if (internal_ptr->u.syment.n_numaux > 1 |
1753 | && coff_data (abfd)->pe) | |
c8e7bf0d | 1754 | internal_ptr->u.syment._n._n_n._n_offset = |
d2df793a | 1755 | ((bfd_hostptr_t) |
c8e7bf0d NC |
1756 | copy_name (abfd, |
1757 | (internal_ptr + 1)->u.auxent.x_file.x_fname, | |
1758 | internal_ptr->u.syment.n_numaux * symesz)); | |
ec0ef80e | 1759 | else |
c8e7bf0d | 1760 | internal_ptr->u.syment._n._n_n._n_offset = |
d2df793a | 1761 | ((bfd_hostptr_t) |
c8e7bf0d NC |
1762 | copy_name (abfd, |
1763 | (internal_ptr + 1)->u.auxent.x_file.x_fname, | |
1764 | (size_t) bfd_coff_filnmlen (abfd))); | |
252b5132 RH |
1765 | } |
1766 | } | |
1767 | else | |
1768 | { | |
1769 | if (internal_ptr->u.syment._n._n_n._n_zeroes != 0) | |
1770 | { | |
1771 | /* This is a "short" name. Make it long. */ | |
dc810e39 AM |
1772 | size_t i; |
1773 | char *newstring; | |
252b5132 | 1774 | |
c8e7bf0d | 1775 | /* Find the length of this string without walking into memory |
252b5132 RH |
1776 | that isn't ours. */ |
1777 | for (i = 0; i < 8; ++i) | |
dc810e39 AM |
1778 | if (internal_ptr->u.syment._n._n_name[i] == '\0') |
1779 | break; | |
252b5132 | 1780 | |
a50b1753 | 1781 | newstring = (char *) bfd_zalloc (abfd, (bfd_size_type) (i + 1)); |
dc810e39 | 1782 | if (newstring == NULL) |
c8e7bf0d | 1783 | return NULL; |
dc810e39 | 1784 | strncpy (newstring, internal_ptr->u.syment._n._n_name, i); |
d2df793a | 1785 | internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) newstring; |
252b5132 RH |
1786 | internal_ptr->u.syment._n._n_n._n_zeroes = 0; |
1787 | } | |
1788 | else if (internal_ptr->u.syment._n._n_n._n_offset == 0) | |
649aeae3 | 1789 | internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) ""; |
252b5132 RH |
1790 | else if (!bfd_coff_symname_in_debug (abfd, &internal_ptr->u.syment)) |
1791 | { | |
1792 | /* Long name already. Point symbol at the string in the | |
1793 | table. */ | |
1794 | if (string_table == NULL) | |
1795 | { | |
1796 | string_table = _bfd_coff_read_string_table (abfd); | |
1797 | if (string_table == NULL) | |
1798 | return NULL; | |
1799 | } | |
1800 | internal_ptr->u.syment._n._n_n._n_offset = | |
d2df793a | 1801 | ((bfd_hostptr_t) |
252b5132 RH |
1802 | (string_table |
1803 | + internal_ptr->u.syment._n._n_n._n_offset)); | |
1804 | } | |
1805 | else | |
1806 | { | |
1807 | /* Long name in debug section. Very similar. */ | |
1808 | if (debug_section == NULL) | |
1809 | debug_section = build_debug_section (abfd); | |
d2df793a | 1810 | internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) |
252b5132 RH |
1811 | (debug_section + internal_ptr->u.syment._n._n_n._n_offset); |
1812 | } | |
1813 | } | |
1814 | internal_ptr += internal_ptr->u.syment.n_numaux; | |
1815 | } | |
1816 | ||
1817 | obj_raw_syments (abfd) = internal; | |
1818 | BFD_ASSERT (obj_raw_syment_count (abfd) | |
1819 | == (unsigned int) (internal_ptr - internal)); | |
1820 | ||
c8e7bf0d NC |
1821 | return internal; |
1822 | } | |
252b5132 RH |
1823 | |
1824 | long | |
c8e7bf0d | 1825 | coff_get_reloc_upper_bound (bfd *abfd, sec_ptr asect) |
252b5132 RH |
1826 | { |
1827 | if (bfd_get_format (abfd) != bfd_object) | |
1828 | { | |
1829 | bfd_set_error (bfd_error_invalid_operation); | |
1830 | return -1; | |
1831 | } | |
1832 | return (asect->reloc_count + 1) * sizeof (arelent *); | |
1833 | } | |
1834 | ||
1835 | asymbol * | |
c8e7bf0d | 1836 | coff_make_empty_symbol (bfd *abfd) |
252b5132 | 1837 | { |
dc810e39 | 1838 | bfd_size_type amt = sizeof (coff_symbol_type); |
d3ce72d0 | 1839 | coff_symbol_type *new_symbol = (coff_symbol_type *) bfd_zalloc (abfd, amt); |
c8e7bf0d | 1840 | |
d3ce72d0 | 1841 | if (new_symbol == NULL) |
c8e7bf0d | 1842 | return NULL; |
d3ce72d0 NC |
1843 | new_symbol->symbol.section = 0; |
1844 | new_symbol->native = 0; | |
1845 | new_symbol->lineno = NULL; | |
1846 | new_symbol->done_lineno = FALSE; | |
1847 | new_symbol->symbol.the_bfd = abfd; | |
c8e7bf0d | 1848 | |
d3ce72d0 | 1849 | return & new_symbol->symbol; |
252b5132 RH |
1850 | } |
1851 | ||
1852 | /* Make a debugging symbol. */ | |
1853 | ||
1854 | asymbol * | |
c8e7bf0d NC |
1855 | coff_bfd_make_debug_symbol (bfd *abfd, |
1856 | void * ptr ATTRIBUTE_UNUSED, | |
1857 | unsigned long sz ATTRIBUTE_UNUSED) | |
252b5132 | 1858 | { |
dc810e39 | 1859 | bfd_size_type amt = sizeof (coff_symbol_type); |
d3ce72d0 | 1860 | coff_symbol_type *new_symbol = (coff_symbol_type *) bfd_alloc (abfd, amt); |
c8e7bf0d | 1861 | |
d3ce72d0 | 1862 | if (new_symbol == NULL) |
c8e7bf0d | 1863 | return NULL; |
252b5132 RH |
1864 | /* @@ The 10 is a guess at a plausible maximum number of aux entries |
1865 | (but shouldn't be a constant). */ | |
dc810e39 | 1866 | amt = sizeof (combined_entry_type) * 10; |
d3ce72d0 NC |
1867 | new_symbol->native = (combined_entry_type *) bfd_zalloc (abfd, amt); |
1868 | if (!new_symbol->native) | |
c8e7bf0d | 1869 | return NULL; |
d3ce72d0 NC |
1870 | new_symbol->symbol.section = bfd_abs_section_ptr; |
1871 | new_symbol->symbol.flags = BSF_DEBUGGING; | |
1872 | new_symbol->lineno = NULL; | |
1873 | new_symbol->done_lineno = FALSE; | |
1874 | new_symbol->symbol.the_bfd = abfd; | |
c8e7bf0d | 1875 | |
d3ce72d0 | 1876 | return & new_symbol->symbol; |
252b5132 RH |
1877 | } |
1878 | ||
252b5132 | 1879 | void |
c8e7bf0d | 1880 | coff_get_symbol_info (bfd *abfd, asymbol *symbol, symbol_info *ret) |
252b5132 RH |
1881 | { |
1882 | bfd_symbol_info (symbol, ret); | |
c8e7bf0d | 1883 | |
252b5132 RH |
1884 | if (coffsymbol (symbol)->native != NULL |
1885 | && coffsymbol (symbol)->native->fix_value) | |
c8e7bf0d | 1886 | ret->value = coffsymbol (symbol)->native->u.syment.n_value - |
d2df793a | 1887 | (bfd_hostptr_t) obj_raw_syments (abfd); |
252b5132 RH |
1888 | } |
1889 | ||
1890 | /* Return the COFF syment for a symbol. */ | |
1891 | ||
b34976b6 | 1892 | bfd_boolean |
c8e7bf0d NC |
1893 | bfd_coff_get_syment (bfd *abfd, |
1894 | asymbol *symbol, | |
1895 | struct internal_syment *psyment) | |
252b5132 RH |
1896 | { |
1897 | coff_symbol_type *csym; | |
1898 | ||
1899 | csym = coff_symbol_from (abfd, symbol); | |
1900 | if (csym == NULL || csym->native == NULL) | |
1901 | { | |
1902 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 1903 | return FALSE; |
252b5132 RH |
1904 | } |
1905 | ||
1906 | *psyment = csym->native->u.syment; | |
1907 | ||
1908 | if (csym->native->fix_value) | |
dc810e39 | 1909 | psyment->n_value = psyment->n_value - |
d2df793a | 1910 | (bfd_hostptr_t) obj_raw_syments (abfd); |
252b5132 RH |
1911 | |
1912 | /* FIXME: We should handle fix_line here. */ | |
1913 | ||
b34976b6 | 1914 | return TRUE; |
252b5132 RH |
1915 | } |
1916 | ||
1917 | /* Return the COFF auxent for a symbol. */ | |
1918 | ||
b34976b6 | 1919 | bfd_boolean |
c8e7bf0d NC |
1920 | bfd_coff_get_auxent (bfd *abfd, |
1921 | asymbol *symbol, | |
1922 | int indx, | |
1923 | union internal_auxent *pauxent) | |
252b5132 RH |
1924 | { |
1925 | coff_symbol_type *csym; | |
1926 | combined_entry_type *ent; | |
1927 | ||
1928 | csym = coff_symbol_from (abfd, symbol); | |
1929 | ||
1930 | if (csym == NULL | |
1931 | || csym->native == NULL | |
1932 | || indx >= csym->native->u.syment.n_numaux) | |
1933 | { | |
1934 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 1935 | return FALSE; |
252b5132 RH |
1936 | } |
1937 | ||
1938 | ent = csym->native + indx + 1; | |
1939 | ||
1940 | *pauxent = ent->u.auxent; | |
1941 | ||
1942 | if (ent->fix_tag) | |
1943 | pauxent->x_sym.x_tagndx.l = | |
1944 | ((combined_entry_type *) pauxent->x_sym.x_tagndx.p | |
1945 | - obj_raw_syments (abfd)); | |
1946 | ||
1947 | if (ent->fix_end) | |
1948 | pauxent->x_sym.x_fcnary.x_fcn.x_endndx.l = | |
1949 | ((combined_entry_type *) pauxent->x_sym.x_fcnary.x_fcn.x_endndx.p | |
1950 | - obj_raw_syments (abfd)); | |
1951 | ||
1952 | if (ent->fix_scnlen) | |
1953 | pauxent->x_csect.x_scnlen.l = | |
1954 | ((combined_entry_type *) pauxent->x_csect.x_scnlen.p | |
1955 | - obj_raw_syments (abfd)); | |
1956 | ||
b34976b6 | 1957 | return TRUE; |
252b5132 RH |
1958 | } |
1959 | ||
1960 | /* Print out information about COFF symbol. */ | |
1961 | ||
1962 | void | |
c8e7bf0d NC |
1963 | coff_print_symbol (bfd *abfd, |
1964 | void * filep, | |
1965 | asymbol *symbol, | |
1966 | bfd_print_symbol_type how) | |
252b5132 | 1967 | { |
c8e7bf0d | 1968 | FILE * file = (FILE *) filep; |
252b5132 RH |
1969 | |
1970 | switch (how) | |
1971 | { | |
1972 | case bfd_print_symbol_name: | |
1973 | fprintf (file, "%s", symbol->name); | |
1974 | break; | |
1975 | ||
1976 | case bfd_print_symbol_more: | |
1977 | fprintf (file, "coff %s %s", | |
1978 | coffsymbol (symbol)->native ? "n" : "g", | |
1979 | coffsymbol (symbol)->lineno ? "l" : " "); | |
1980 | break; | |
1981 | ||
1982 | case bfd_print_symbol_all: | |
1983 | if (coffsymbol (symbol)->native) | |
1984 | { | |
beb1bf64 | 1985 | bfd_vma val; |
252b5132 RH |
1986 | unsigned int aux; |
1987 | combined_entry_type *combined = coffsymbol (symbol)->native; | |
1988 | combined_entry_type *root = obj_raw_syments (abfd); | |
1989 | struct lineno_cache_entry *l = coffsymbol (symbol)->lineno; | |
1990 | ||
1991 | fprintf (file, "[%3ld]", (long) (combined - root)); | |
1992 | ||
1993 | if (! combined->fix_value) | |
beb1bf64 | 1994 | val = (bfd_vma) combined->u.syment.n_value; |
252b5132 | 1995 | else |
d2df793a | 1996 | val = combined->u.syment.n_value - (bfd_hostptr_t) root; |
252b5132 | 1997 | |
7920ce38 | 1998 | fprintf (file, "(sec %2d)(fl 0x%02x)(ty %3x)(scl %3d) (nx %d) 0x", |
252b5132 RH |
1999 | combined->u.syment.n_scnum, |
2000 | combined->u.syment.n_flags, | |
2001 | combined->u.syment.n_type, | |
2002 | combined->u.syment.n_sclass, | |
745c12f8 | 2003 | combined->u.syment.n_numaux); |
ebf12fbe | 2004 | bfd_fprintf_vma (abfd, file, val); |
745c12f8 | 2005 | fprintf (file, " %s", symbol->name); |
252b5132 RH |
2006 | |
2007 | for (aux = 0; aux < combined->u.syment.n_numaux; aux++) | |
2008 | { | |
2009 | combined_entry_type *auxp = combined + aux + 1; | |
2010 | long tagndx; | |
2011 | ||
2012 | if (auxp->fix_tag) | |
2013 | tagndx = auxp->u.auxent.x_sym.x_tagndx.p - root; | |
2014 | else | |
2015 | tagndx = auxp->u.auxent.x_sym.x_tagndx.l; | |
2016 | ||
2017 | fprintf (file, "\n"); | |
2018 | ||
2019 | if (bfd_coff_print_aux (abfd, file, root, combined, auxp, aux)) | |
2020 | continue; | |
2021 | ||
2022 | switch (combined->u.syment.n_sclass) | |
2023 | { | |
2024 | case C_FILE: | |
2025 | fprintf (file, "File "); | |
2026 | break; | |
2027 | ||
2028 | case C_STAT: | |
2029 | if (combined->u.syment.n_type == T_NULL) | |
c8e7bf0d | 2030 | /* Probably a section symbol ? */ |
252b5132 RH |
2031 | { |
2032 | fprintf (file, "AUX scnlen 0x%lx nreloc %d nlnno %d", | |
0af1713e | 2033 | (unsigned long) auxp->u.auxent.x_scn.x_scnlen, |
252b5132 RH |
2034 | auxp->u.auxent.x_scn.x_nreloc, |
2035 | auxp->u.auxent.x_scn.x_nlinno); | |
2036 | if (auxp->u.auxent.x_scn.x_checksum != 0 | |
2037 | || auxp->u.auxent.x_scn.x_associated != 0 | |
2038 | || auxp->u.auxent.x_scn.x_comdat != 0) | |
2039 | fprintf (file, " checksum 0x%lx assoc %d comdat %d", | |
2040 | auxp->u.auxent.x_scn.x_checksum, | |
2041 | auxp->u.auxent.x_scn.x_associated, | |
2042 | auxp->u.auxent.x_scn.x_comdat); | |
2043 | break; | |
2044 | } | |
c8e7bf0d | 2045 | /* Otherwise fall through. */ |
312191a6 | 2046 | case C_EXT: |
8602d4fe | 2047 | case C_AIX_WEAKEXT: |
312191a6 ILT |
2048 | if (ISFCN (combined->u.syment.n_type)) |
2049 | { | |
cea4409c AM |
2050 | long next, llnos; |
2051 | ||
2052 | if (auxp->fix_end) | |
2053 | next = (auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p | |
2054 | - root); | |
2055 | else | |
2056 | next = auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l; | |
2057 | llnos = auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
312191a6 | 2058 | fprintf (file, |
3d66c4f7 | 2059 | "AUX tagndx %ld ttlsiz 0x%lx lnnos %ld next %ld", |
0af1713e AM |
2060 | tagndx, |
2061 | (unsigned long) auxp->u.auxent.x_sym.x_misc.x_fsize, | |
cea4409c | 2062 | llnos, next); |
312191a6 ILT |
2063 | break; |
2064 | } | |
c8e7bf0d | 2065 | /* Otherwise fall through. */ |
252b5132 RH |
2066 | default: |
2067 | fprintf (file, "AUX lnno %d size 0x%x tagndx %ld", | |
2068 | auxp->u.auxent.x_sym.x_misc.x_lnsz.x_lnno, | |
2069 | auxp->u.auxent.x_sym.x_misc.x_lnsz.x_size, | |
2070 | tagndx); | |
2071 | if (auxp->fix_end) | |
2072 | fprintf (file, " endndx %ld", | |
2073 | ((long) | |
2074 | (auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p | |
2075 | - root))); | |
2076 | break; | |
2077 | } | |
2078 | } | |
2079 | ||
2080 | if (l) | |
2081 | { | |
2082 | fprintf (file, "\n%s :", l->u.sym->name); | |
2083 | l++; | |
2084 | while (l->line_number) | |
2085 | { | |
745c12f8 | 2086 | fprintf (file, "\n%4d : ", l->line_number); |
ebf12fbe | 2087 | bfd_fprintf_vma (abfd, file, l->u.offset + symbol->section->vma); |
252b5132 RH |
2088 | l++; |
2089 | } | |
2090 | } | |
2091 | } | |
2092 | else | |
2093 | { | |
c8e7bf0d | 2094 | bfd_print_symbol_vandf (abfd, (void *) file, symbol); |
252b5132 RH |
2095 | fprintf (file, " %-5s %s %s %s", |
2096 | symbol->section->name, | |
2097 | coffsymbol (symbol)->native ? "n" : "g", | |
2098 | coffsymbol (symbol)->lineno ? "l" : " ", | |
2099 | symbol->name); | |
2100 | } | |
2101 | } | |
2102 | } | |
2103 | ||
2104 | /* Return whether a symbol name implies a local symbol. In COFF, | |
2105 | local symbols generally start with ``.L''. Most targets use this | |
2106 | function for the is_local_label_name entry point, but some may | |
2107 | override it. */ | |
2108 | ||
b34976b6 | 2109 | bfd_boolean |
c8e7bf0d NC |
2110 | _bfd_coff_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, |
2111 | const char *name) | |
252b5132 | 2112 | { |
b34976b6 | 2113 | return name[0] == '.' && name[1] == 'L'; |
252b5132 RH |
2114 | } |
2115 | ||
9a968f43 NC |
2116 | /* Provided a BFD, a section and an offset (in bytes, not octets) into the |
2117 | section, calculate and return the name of the source file and the line | |
2118 | nearest to the wanted location. */ | |
435b1e90 | 2119 | |
b34976b6 | 2120 | bfd_boolean |
fc28f9aa TG |
2121 | coff_find_nearest_line_with_names (bfd *abfd, |
2122 | const struct dwarf_debug_section *debug_sections, | |
2123 | asection *section, | |
2124 | asymbol **symbols, | |
2125 | bfd_vma offset, | |
2126 | const char **filename_ptr, | |
2127 | const char **functionname_ptr, | |
2128 | unsigned int *line_ptr) | |
252b5132 | 2129 | { |
b34976b6 | 2130 | bfd_boolean found; |
252b5132 RH |
2131 | unsigned int i; |
2132 | unsigned int line_base; | |
2133 | coff_data_type *cof = coff_data (abfd); | |
c8e7bf0d | 2134 | /* Run through the raw syments if available. */ |
252b5132 RH |
2135 | combined_entry_type *p; |
2136 | combined_entry_type *pend; | |
2137 | alent *l; | |
2138 | struct coff_section_tdata *sec_data; | |
dc810e39 | 2139 | bfd_size_type amt; |
252b5132 RH |
2140 | |
2141 | /* Before looking through the symbol table, try to use a .stab | |
2142 | section to find the information. */ | |
2143 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
2144 | &found, filename_ptr, | |
2145 | functionname_ptr, line_ptr, | |
51db3708 | 2146 | &coff_data(abfd)->line_info)) |
b34976b6 | 2147 | return FALSE; |
51db3708 | 2148 | |
4ca29a6a | 2149 | if (found) |
b34976b6 | 2150 | return TRUE; |
4ca29a6a | 2151 | |
51db3708 | 2152 | /* Also try examining DWARF2 debugging information. */ |
fc28f9aa TG |
2153 | if (_bfd_dwarf2_find_nearest_line (abfd, debug_sections, |
2154 | section, symbols, offset, | |
51db3708 NC |
2155 | filename_ptr, functionname_ptr, |
2156 | line_ptr, 0, | |
2157 | &coff_data(abfd)->dwarf2_find_line_info)) | |
b34976b6 | 2158 | return TRUE; |
51db3708 | 2159 | |
252b5132 RH |
2160 | *filename_ptr = 0; |
2161 | *functionname_ptr = 0; | |
2162 | *line_ptr = 0; | |
2163 | ||
c8e7bf0d | 2164 | /* Don't try and find line numbers in a non coff file. */ |
9bd09e22 | 2165 | if (!bfd_family_coff (abfd)) |
b34976b6 | 2166 | return FALSE; |
252b5132 RH |
2167 | |
2168 | if (cof == NULL) | |
b34976b6 | 2169 | return FALSE; |
252b5132 RH |
2170 | |
2171 | /* Find the first C_FILE symbol. */ | |
2172 | p = cof->raw_syments; | |
2173 | if (!p) | |
b34976b6 | 2174 | return FALSE; |
252b5132 RH |
2175 | |
2176 | pend = p + cof->raw_syment_count; | |
2177 | while (p < pend) | |
2178 | { | |
2179 | if (p->u.syment.n_sclass == C_FILE) | |
2180 | break; | |
2181 | p += 1 + p->u.syment.n_numaux; | |
2182 | } | |
2183 | ||
2184 | if (p < pend) | |
2185 | { | |
2186 | bfd_vma sec_vma; | |
2187 | bfd_vma maxdiff; | |
2188 | ||
2189 | /* Look through the C_FILE symbols to find the best one. */ | |
2190 | sec_vma = bfd_get_section_vma (abfd, section); | |
2191 | *filename_ptr = (char *) p->u.syment._n._n_n._n_offset; | |
2192 | maxdiff = (bfd_vma) 0 - (bfd_vma) 1; | |
2193 | while (1) | |
2194 | { | |
4d9e2b27 | 2195 | bfd_vma file_addr; |
252b5132 RH |
2196 | combined_entry_type *p2; |
2197 | ||
2198 | for (p2 = p + 1 + p->u.syment.n_numaux; | |
2199 | p2 < pend; | |
2200 | p2 += 1 + p2->u.syment.n_numaux) | |
2201 | { | |
2202 | if (p2->u.syment.n_scnum > 0 | |
2203 | && (section | |
2204 | == coff_section_from_bfd_index (abfd, | |
2205 | p2->u.syment.n_scnum))) | |
2206 | break; | |
2207 | if (p2->u.syment.n_sclass == C_FILE) | |
2208 | { | |
2209 | p2 = pend; | |
2210 | break; | |
2211 | } | |
2212 | } | |
2213 | ||
4d9e2b27 NC |
2214 | file_addr = (bfd_vma) p2->u.syment.n_value; |
2215 | /* PR 11512: Include the section address of the function name symbol. */ | |
2216 | if (p2->u.syment.n_scnum > 0) | |
2217 | file_addr += coff_section_from_bfd_index (abfd, | |
2218 | p2->u.syment.n_scnum)->vma; | |
798c1fb8 ILT |
2219 | /* We use <= MAXDIFF here so that if we get a zero length |
2220 | file, we actually use the next file entry. */ | |
252b5132 | 2221 | if (p2 < pend |
4d9e2b27 NC |
2222 | && offset + sec_vma >= file_addr |
2223 | && offset + sec_vma - file_addr <= maxdiff) | |
252b5132 RH |
2224 | { |
2225 | *filename_ptr = (char *) p->u.syment._n._n_n._n_offset; | |
2226 | maxdiff = offset + sec_vma - p2->u.syment.n_value; | |
2227 | } | |
2228 | ||
2229 | /* Avoid endless loops on erroneous files by ensuring that | |
2230 | we always move forward in the file. */ | |
cea4409c | 2231 | if (p >= cof->raw_syments + p->u.syment.n_value) |
252b5132 RH |
2232 | break; |
2233 | ||
2234 | p = cof->raw_syments + p->u.syment.n_value; | |
2235 | if (p > pend || p->u.syment.n_sclass != C_FILE) | |
2236 | break; | |
2237 | } | |
2238 | } | |
2239 | ||
c8e7bf0d | 2240 | /* Now wander though the raw linenumbers of the section. */ |
70df0c05 | 2241 | /* If we have been called on this section before, and the offset we |
252b5132 RH |
2242 | want is further down then we can prime the lookup loop. */ |
2243 | sec_data = coff_section_data (abfd, section); | |
2244 | if (sec_data != NULL | |
2245 | && sec_data->i > 0 | |
2246 | && offset >= sec_data->offset) | |
2247 | { | |
2248 | i = sec_data->i; | |
2249 | *functionname_ptr = sec_data->function; | |
2250 | line_base = sec_data->line_base; | |
2251 | } | |
2252 | else | |
2253 | { | |
2254 | i = 0; | |
2255 | line_base = 0; | |
2256 | } | |
2257 | ||
2258 | if (section->lineno != NULL) | |
2259 | { | |
798c1fb8 ILT |
2260 | bfd_vma last_value = 0; |
2261 | ||
252b5132 RH |
2262 | l = §ion->lineno[i]; |
2263 | ||
2264 | for (; i < section->lineno_count; i++) | |
2265 | { | |
2266 | if (l->line_number == 0) | |
2267 | { | |
c8e7bf0d | 2268 | /* Get the symbol this line number points at. */ |
252b5132 RH |
2269 | coff_symbol_type *coff = (coff_symbol_type *) (l->u.sym); |
2270 | if (coff->symbol.value > offset) | |
2271 | break; | |
2272 | *functionname_ptr = coff->symbol.name; | |
798c1fb8 | 2273 | last_value = coff->symbol.value; |
252b5132 RH |
2274 | if (coff->native) |
2275 | { | |
2276 | combined_entry_type *s = coff->native; | |
2277 | s = s + 1 + s->u.syment.n_numaux; | |
2278 | ||
2279 | /* In XCOFF a debugging symbol can follow the | |
2280 | function symbol. */ | |
2281 | if (s->u.syment.n_scnum == N_DEBUG) | |
2282 | s = s + 1 + s->u.syment.n_numaux; | |
2283 | ||
2284 | /* S should now point to the .bf of the function. */ | |
2285 | if (s->u.syment.n_numaux) | |
2286 | { | |
2287 | /* The linenumber is stored in the auxent. */ | |
2288 | union internal_auxent *a = &((s + 1)->u.auxent); | |
2289 | line_base = a->x_sym.x_misc.x_lnsz.x_lnno; | |
2290 | *line_ptr = line_base; | |
2291 | } | |
2292 | } | |
2293 | } | |
2294 | else | |
2295 | { | |
2296 | if (l->u.offset > offset) | |
2297 | break; | |
2298 | *line_ptr = l->line_number + line_base - 1; | |
2299 | } | |
2300 | l++; | |
2301 | } | |
798c1fb8 ILT |
2302 | |
2303 | /* If we fell off the end of the loop, then assume that this | |
2304 | symbol has no line number info. Otherwise, symbols with no | |
2305 | line number info get reported with the line number of the | |
2306 | last line of the last symbol which does have line number | |
2307 | info. We use 0x100 as a slop to account for cases where the | |
2308 | last line has executable code. */ | |
2309 | if (i >= section->lineno_count | |
2310 | && last_value != 0 | |
2311 | && offset - last_value > 0x100) | |
2312 | { | |
2313 | *functionname_ptr = NULL; | |
2314 | *line_ptr = 0; | |
2315 | } | |
252b5132 RH |
2316 | } |
2317 | ||
2318 | /* Cache the results for the next call. */ | |
2319 | if (sec_data == NULL && section->owner == abfd) | |
2320 | { | |
dc810e39 | 2321 | amt = sizeof (struct coff_section_tdata); |
c8e7bf0d | 2322 | section->used_by_bfd = bfd_zalloc (abfd, amt); |
252b5132 RH |
2323 | sec_data = (struct coff_section_tdata *) section->used_by_bfd; |
2324 | } | |
2325 | if (sec_data != NULL) | |
2326 | { | |
2327 | sec_data->offset = offset; | |
70df0c05 | 2328 | sec_data->i = i - 1; |
252b5132 RH |
2329 | sec_data->function = *functionname_ptr; |
2330 | sec_data->line_base = line_base; | |
2331 | } | |
2332 | ||
b34976b6 | 2333 | return TRUE; |
252b5132 RH |
2334 | } |
2335 | ||
fc28f9aa TG |
2336 | bfd_boolean |
2337 | coff_find_nearest_line (bfd *abfd, | |
2338 | asection *section, | |
2339 | asymbol **symbols, | |
2340 | bfd_vma offset, | |
2341 | const char **filename_ptr, | |
2342 | const char **functionname_ptr, | |
2343 | unsigned int *line_ptr) | |
2344 | { | |
2345 | return coff_find_nearest_line_with_names (abfd, dwarf_debug_sections, | |
2346 | section, symbols, offset, | |
2347 | filename_ptr, functionname_ptr, | |
2348 | line_ptr); | |
2349 | } | |
2350 | ||
4ab527b0 FF |
2351 | bfd_boolean |
2352 | coff_find_inliner_info (bfd *abfd, | |
2353 | const char **filename_ptr, | |
2354 | const char **functionname_ptr, | |
2355 | unsigned int *line_ptr) | |
2356 | { | |
2357 | bfd_boolean found; | |
2358 | ||
2359 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
2360 | functionname_ptr, line_ptr, | |
2361 | &coff_data(abfd)->dwarf2_find_line_info); | |
2362 | return (found); | |
2363 | } | |
2364 | ||
252b5132 | 2365 | int |
a6b96beb | 2366 | coff_sizeof_headers (bfd *abfd, struct bfd_link_info *info) |
252b5132 RH |
2367 | { |
2368 | size_t size; | |
2369 | ||
a6b96beb | 2370 | if (!info->relocatable) |
c8e7bf0d | 2371 | size = bfd_coff_filhsz (abfd) + bfd_coff_aoutsz (abfd); |
252b5132 | 2372 | else |
c8e7bf0d | 2373 | size = bfd_coff_filhsz (abfd); |
252b5132 RH |
2374 | |
2375 | size += abfd->section_count * bfd_coff_scnhsz (abfd); | |
2376 | return size; | |
2377 | } | |
2378 | ||
2379 | /* Change the class of a coff symbol held by BFD. */ | |
c8e7bf0d | 2380 | |
b34976b6 | 2381 | bfd_boolean |
c8e7bf0d NC |
2382 | bfd_coff_set_symbol_class (bfd * abfd, |
2383 | asymbol * symbol, | |
96d56e9f | 2384 | unsigned int symbol_class) |
252b5132 RH |
2385 | { |
2386 | coff_symbol_type * csym; | |
2387 | ||
2388 | csym = coff_symbol_from (abfd, symbol); | |
2389 | if (csym == NULL) | |
2390 | { | |
2391 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 2392 | return FALSE; |
252b5132 RH |
2393 | } |
2394 | else if (csym->native == NULL) | |
2395 | { | |
2396 | /* This is an alien symbol which no native coff backend data. | |
2397 | We cheat here by creating a fake native entry for it and | |
2398 | then filling in the class. This code is based on that in | |
2399 | coff_write_alien_symbol(). */ | |
244148ad | 2400 | |
252b5132 | 2401 | combined_entry_type * native; |
dc810e39 | 2402 | bfd_size_type amt = sizeof (* native); |
252b5132 | 2403 | |
a50b1753 | 2404 | native = (combined_entry_type *) bfd_zalloc (abfd, amt); |
252b5132 | 2405 | if (native == NULL) |
b34976b6 | 2406 | return FALSE; |
252b5132 | 2407 | |
252b5132 | 2408 | native->u.syment.n_type = T_NULL; |
96d56e9f | 2409 | native->u.syment.n_sclass = symbol_class; |
244148ad | 2410 | |
252b5132 RH |
2411 | if (bfd_is_und_section (symbol->section)) |
2412 | { | |
2413 | native->u.syment.n_scnum = N_UNDEF; | |
2414 | native->u.syment.n_value = symbol->value; | |
2415 | } | |
2416 | else if (bfd_is_com_section (symbol->section)) | |
2417 | { | |
2418 | native->u.syment.n_scnum = N_UNDEF; | |
2419 | native->u.syment.n_value = symbol->value; | |
2420 | } | |
2421 | else | |
2422 | { | |
2423 | native->u.syment.n_scnum = | |
2424 | symbol->section->output_section->target_index; | |
2425 | native->u.syment.n_value = (symbol->value | |
2426 | + symbol->section->output_offset); | |
2427 | if (! obj_pe (abfd)) | |
2428 | native->u.syment.n_value += symbol->section->output_section->vma; | |
244148ad | 2429 | |
08da05b0 | 2430 | /* Copy the any flags from the file header into the symbol. |
252b5132 RH |
2431 | FIXME: Why? */ |
2432 | native->u.syment.n_flags = bfd_asymbol_bfd (& csym->symbol)->flags; | |
2433 | } | |
244148ad | 2434 | |
252b5132 RH |
2435 | csym->native = native; |
2436 | } | |
2437 | else | |
96d56e9f | 2438 | csym->native->u.syment.n_sclass = symbol_class; |
244148ad | 2439 | |
b34976b6 | 2440 | return TRUE; |
252b5132 | 2441 | } |
082b7297 L |
2442 | |
2443 | struct coff_comdat_info * | |
2444 | bfd_coff_get_comdat_section (bfd *abfd, struct bfd_section *sec) | |
2445 | { | |
fedf8d51 AM |
2446 | if (bfd_get_flavour (abfd) == bfd_target_coff_flavour |
2447 | && coff_section_data (abfd, sec) != NULL) | |
082b7297 L |
2448 | return coff_section_data (abfd, sec)->comdat; |
2449 | else | |
2450 | return NULL; | |
2451 | } | |
c77ec726 AM |
2452 | |
2453 | bfd_boolean | |
2454 | _bfd_coff_section_already_linked (bfd *abfd, | |
2455 | asection *sec, | |
2456 | struct bfd_link_info *info) | |
2457 | { | |
2458 | flagword flags; | |
2459 | const char *name, *key; | |
2460 | struct bfd_section_already_linked *l; | |
2461 | struct bfd_section_already_linked_hash_entry *already_linked_list; | |
2462 | struct coff_comdat_info *s_comdat; | |
2463 | ||
2464 | flags = sec->flags; | |
2465 | if ((flags & SEC_LINK_ONCE) == 0) | |
2466 | return FALSE; | |
2467 | ||
2468 | /* The COFF backend linker doesn't support group sections. */ | |
2469 | if ((flags & SEC_GROUP) != 0) | |
2470 | return FALSE; | |
2471 | ||
2472 | name = bfd_get_section_name (abfd, sec); | |
2473 | s_comdat = bfd_coff_get_comdat_section (abfd, sec); | |
2474 | ||
2475 | if (s_comdat != NULL) | |
2476 | key = s_comdat->name; | |
2477 | else | |
2478 | { | |
2479 | if (CONST_STRNEQ (name, ".gnu.linkonce.") | |
2480 | && (key = strchr (name + sizeof (".gnu.linkonce.") - 1, '.')) != NULL) | |
2481 | key++; | |
2482 | else | |
2483 | /* FIXME: gcc as of 2011-09 emits sections like .text$<key>, | |
2484 | .xdata$<key> and .pdata$<key> only the first of which has a | |
2485 | comdat key. Should these all match the LTO IR key? */ | |
2486 | key = name; | |
2487 | } | |
2488 | ||
2489 | already_linked_list = bfd_section_already_linked_table_lookup (key); | |
2490 | ||
2491 | for (l = already_linked_list->entry; l != NULL; l = l->next) | |
2492 | { | |
2493 | struct coff_comdat_info *l_comdat; | |
2494 | ||
2495 | l_comdat = bfd_coff_get_comdat_section (l->sec->owner, l->sec); | |
2496 | ||
2497 | /* The section names must match, and both sections must be | |
2498 | comdat and have the same comdat name, or both sections must | |
2499 | be non-comdat. LTO IR plugin sections are an exception. They | |
2500 | are always named .gnu.linkonce.t.<key> (<key> is some string) | |
2501 | and match any comdat section with comdat name of <key>, and | |
2502 | any linkonce section with the same suffix, ie. | |
2503 | .gnu.linkonce.*.<key>. */ | |
2504 | if (((s_comdat != NULL) == (l_comdat != NULL) | |
2505 | && strcmp (name, l->sec->name) == 0) | |
2506 | || (l->sec->owner->flags & BFD_PLUGIN) != 0) | |
2507 | { | |
2508 | /* The section has already been linked. See if we should | |
2509 | issue a warning. */ | |
2510 | return _bfd_handle_already_linked (sec, l, info); | |
2511 | } | |
2512 | } | |
2513 | ||
2514 | /* This is the first section with this name. Record it. */ | |
2515 | if (!bfd_section_already_linked_table_insert (already_linked_list, sec)) | |
2516 | info->callbacks->einfo (_("%F%P: already_linked_table: %E\n")); | |
2517 | return FALSE; | |
2518 | } |