Commit | Line | Data |
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252b5132 | 1 | /* Support for the generic parts of COFF, for BFD. |
82704155 | 2 | Copyright (C) 1990-2019 Free Software Foundation, Inc. |
252b5132 RH |
3 | Written by Cygnus Support. |
4 | ||
c8e7bf0d | 5 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 6 | |
c8e7bf0d NC |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c8e7bf0d | 10 | (at your option) any later version. |
252b5132 | 11 | |
c8e7bf0d NC |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
252b5132 | 16 | |
c8e7bf0d NC |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
20 | MA 02110-1301, USA. */ | |
252b5132 RH |
21 | |
22 | /* Most of this hacked by Steve Chamberlain, sac@cygnus.com. | |
23 | Split out of coffcode.h by Ian Taylor, ian@cygnus.com. */ | |
24 | ||
25 | /* This file contains COFF code that is not dependent on any | |
26 | particular COFF target. There is only one version of this file in | |
27 | libbfd.a, so no target specific code may be put in here. Or, to | |
28 | put it another way, | |
29 | ||
30 | ********** DO NOT PUT TARGET SPECIFIC CODE IN THIS FILE ********** | |
31 | ||
32 | If you need to add some target specific behaviour, add a new hook | |
33 | function to bfd_coff_backend_data. | |
34 | ||
35 | Some of these functions are also called by the ECOFF routines. | |
36 | Those functions may not use any COFF specific information, such as | |
37 | coff_data (abfd). */ | |
38 | ||
252b5132 | 39 | #include "sysdep.h" |
3db64b00 | 40 | #include "bfd.h" |
252b5132 RH |
41 | #include "libbfd.h" |
42 | #include "coff/internal.h" | |
43 | #include "libcoff.h" | |
44 | ||
252b5132 RH |
45 | /* Take a section header read from a coff file (in HOST byte order), |
46 | and make a BFD "section" out of it. This is used by ECOFF. */ | |
c8e7bf0d | 47 | |
b34976b6 | 48 | static bfd_boolean |
c8e7bf0d NC |
49 | make_a_section_from_file (bfd *abfd, |
50 | struct internal_scnhdr *hdr, | |
51 | unsigned int target_index) | |
252b5132 RH |
52 | { |
53 | asection *return_section; | |
54 | char *name; | |
b34976b6 | 55 | bfd_boolean result = TRUE; |
7c8ca0e4 | 56 | flagword flags; |
252b5132 RH |
57 | |
58 | name = NULL; | |
59 | ||
88183869 DK |
60 | /* Handle long section names as in PE. On reading, we want to |
61 | accept long names if the format permits them at all, regardless | |
62 | of the current state of the flag that dictates if we would generate | |
63 | them in outputs; this construct checks if that is the case by | |
64 | attempting to set the flag, without changing its state; the call | |
65 | will fail for formats that do not support long names at all. */ | |
66 | if (bfd_coff_set_long_section_names (abfd, bfd_coff_long_section_names (abfd)) | |
252b5132 RH |
67 | && hdr->s_name[0] == '/') |
68 | { | |
69 | char buf[SCNNMLEN]; | |
70 | long strindex; | |
71 | char *p; | |
72 | const char *strings; | |
73 | ||
0408dee6 | 74 | /* Flag that this BFD uses long names, even though the format might |
07d6d2b8 AM |
75 | expect them to be off by default. This won't directly affect the |
76 | format of any output BFD created from this one, but the information | |
77 | can be used to decide what to do. */ | |
0408dee6 | 78 | bfd_coff_set_long_section_names (abfd, TRUE); |
252b5132 RH |
79 | memcpy (buf, hdr->s_name + 1, SCNNMLEN - 1); |
80 | buf[SCNNMLEN - 1] = '\0'; | |
81 | strindex = strtol (buf, &p, 10); | |
82 | if (*p == '\0' && strindex >= 0) | |
83 | { | |
84 | strings = _bfd_coff_read_string_table (abfd); | |
85 | if (strings == NULL) | |
b34976b6 | 86 | return FALSE; |
5a3f568b NC |
87 | if ((bfd_size_type)(strindex + 2) >= obj_coff_strings_len (abfd)) |
88 | return FALSE; | |
252b5132 | 89 | strings += strindex; |
a50b1753 | 90 | name = (char *) bfd_alloc (abfd, |
07d6d2b8 | 91 | (bfd_size_type) strlen (strings) + 1 + 1); |
252b5132 | 92 | if (name == NULL) |
b34976b6 | 93 | return FALSE; |
252b5132 RH |
94 | strcpy (name, strings); |
95 | } | |
96 | } | |
97 | ||
98 | if (name == NULL) | |
99 | { | |
100 | /* Assorted wastage to null-terminate the name, thanks AT&T! */ | |
a50b1753 | 101 | name = (char *) bfd_alloc (abfd, |
07d6d2b8 | 102 | (bfd_size_type) sizeof (hdr->s_name) + 1 + 1); |
252b5132 | 103 | if (name == NULL) |
b34976b6 | 104 | return FALSE; |
252b5132 RH |
105 | strncpy (name, (char *) &hdr->s_name[0], sizeof (hdr->s_name)); |
106 | name[sizeof (hdr->s_name)] = 0; | |
107 | } | |
108 | ||
109 | return_section = bfd_make_section_anyway (abfd, name); | |
110 | if (return_section == NULL) | |
b34976b6 | 111 | return FALSE; |
252b5132 RH |
112 | |
113 | return_section->vma = hdr->s_vaddr; | |
114 | return_section->lma = hdr->s_paddr; | |
eea6121a | 115 | return_section->size = hdr->s_size; |
252b5132 RH |
116 | return_section->filepos = hdr->s_scnptr; |
117 | return_section->rel_filepos = hdr->s_relptr; | |
118 | return_section->reloc_count = hdr->s_nreloc; | |
119 | ||
120 | bfd_coff_set_alignment_hook (abfd, return_section, hdr); | |
121 | ||
122 | return_section->line_filepos = hdr->s_lnnoptr; | |
123 | ||
124 | return_section->lineno_count = hdr->s_nlnno; | |
125 | return_section->userdata = NULL; | |
c8e7bf0d | 126 | return_section->next = NULL; |
252b5132 | 127 | return_section->target_index = target_index; |
7c8ca0e4 NC |
128 | |
129 | if (! bfd_coff_styp_to_sec_flags_hook (abfd, hdr, name, return_section, | |
130 | & flags)) | |
b34976b6 | 131 | result = FALSE; |
dc810e39 | 132 | |
7c8ca0e4 | 133 | return_section->flags = flags; |
252b5132 RH |
134 | |
135 | /* At least on i386-coff, the line number count for a shared library | |
136 | section must be ignored. */ | |
137 | if ((return_section->flags & SEC_COFF_SHARED_LIBRARY) != 0) | |
138 | return_section->lineno_count = 0; | |
139 | ||
140 | if (hdr->s_nreloc != 0) | |
141 | return_section->flags |= SEC_RELOC; | |
c8e7bf0d | 142 | /* FIXME: should this check 'hdr->s_size > 0'. */ |
252b5132 RH |
143 | if (hdr->s_scnptr != 0) |
144 | return_section->flags |= SEC_HAS_CONTENTS; | |
7c8ca0e4 | 145 | |
a29a8af8 KT |
146 | /* Compress/decompress DWARF debug sections with names: .debug_* and |
147 | .zdebug_*, after the section flags is set. */ | |
148 | if ((flags & SEC_DEBUGGING) | |
a1165289 | 149 | && strlen (name) > 7 |
a29a8af8 | 150 | && ((name[1] == 'd' && name[6] == '_') |
a1165289 | 151 | || (strlen (name) > 8 && name[1] == 'z' && name[7] == '_'))) |
a29a8af8 KT |
152 | { |
153 | enum { nothing, compress, decompress } action = nothing; | |
154 | char *new_name = NULL; | |
155 | ||
156 | if (bfd_is_section_compressed (abfd, return_section)) | |
157 | { | |
158 | /* Compressed section. Check if we should decompress. */ | |
159 | if ((abfd->flags & BFD_DECOMPRESS)) | |
160 | action = decompress; | |
161 | } | |
162 | else if (!bfd_is_section_compressed (abfd, return_section)) | |
163 | { | |
164 | /* Normal section. Check if we should compress. */ | |
165 | if ((abfd->flags & BFD_COMPRESS) && return_section->size != 0) | |
166 | action = compress; | |
167 | } | |
168 | ||
169 | switch (action) | |
170 | { | |
171 | case nothing: | |
172 | break; | |
173 | case compress: | |
174 | if (!bfd_init_section_compress_status (abfd, return_section)) | |
175 | { | |
4eca0228 | 176 | _bfd_error_handler |
695344c0 | 177 | /* xgettext: c-format */ |
871b3ab2 | 178 | (_("%pB: unable to initialize compress status for section %s"), |
a29a8af8 KT |
179 | abfd, name); |
180 | return FALSE; | |
181 | } | |
273a4985 | 182 | if (return_section->compress_status == COMPRESS_SECTION_DONE) |
a29a8af8 | 183 | { |
273a4985 JT |
184 | if (name[1] != 'z') |
185 | { | |
186 | unsigned int len = strlen (name); | |
187 | ||
188 | new_name = bfd_alloc (abfd, len + 2); | |
189 | if (new_name == NULL) | |
190 | return FALSE; | |
191 | new_name[0] = '.'; | |
192 | new_name[1] = 'z'; | |
193 | memcpy (new_name + 2, name + 1, len); | |
194 | } | |
a29a8af8 | 195 | } |
07d6d2b8 | 196 | break; |
a29a8af8 KT |
197 | case decompress: |
198 | if (!bfd_init_section_decompress_status (abfd, return_section)) | |
199 | { | |
4eca0228 | 200 | _bfd_error_handler |
695344c0 | 201 | /* xgettext: c-format */ |
871b3ab2 | 202 | (_("%pB: unable to initialize decompress status for section %s"), |
a29a8af8 KT |
203 | abfd, name); |
204 | return FALSE; | |
205 | } | |
206 | if (name[1] == 'z') | |
207 | { | |
208 | unsigned int len = strlen (name); | |
209 | ||
210 | new_name = bfd_alloc (abfd, len); | |
211 | if (new_name == NULL) | |
212 | return FALSE; | |
213 | new_name[0] = '.'; | |
214 | memcpy (new_name + 1, name + 2, len - 1); | |
215 | } | |
216 | break; | |
217 | } | |
218 | if (new_name != NULL) | |
219 | bfd_rename_section (abfd, return_section, new_name); | |
220 | } | |
221 | ||
7c8ca0e4 | 222 | return result; |
252b5132 RH |
223 | } |
224 | ||
225 | /* Read in a COFF object and make it into a BFD. This is used by | |
226 | ECOFF as well. */ | |
ce63b7b3 KT |
227 | const bfd_target * |
228 | coff_real_object_p (bfd *, | |
07d6d2b8 AM |
229 | unsigned, |
230 | struct internal_filehdr *, | |
231 | struct internal_aouthdr *); | |
ce63b7b3 | 232 | const bfd_target * |
c8e7bf0d NC |
233 | coff_real_object_p (bfd *abfd, |
234 | unsigned nscns, | |
235 | struct internal_filehdr *internal_f, | |
236 | struct internal_aouthdr *internal_a) | |
252b5132 RH |
237 | { |
238 | flagword oflags = abfd->flags; | |
239 | bfd_vma ostart = bfd_get_start_address (abfd); | |
c8e7bf0d NC |
240 | void * tdata; |
241 | void * tdata_save; | |
242 | bfd_size_type readsize; /* Length of file_info. */ | |
252b5132 RH |
243 | unsigned int scnhsz; |
244 | char *external_sections; | |
245 | ||
246 | if (!(internal_f->f_flags & F_RELFLG)) | |
247 | abfd->flags |= HAS_RELOC; | |
248 | if ((internal_f->f_flags & F_EXEC)) | |
249 | abfd->flags |= EXEC_P; | |
250 | if (!(internal_f->f_flags & F_LNNO)) | |
251 | abfd->flags |= HAS_LINENO; | |
252 | if (!(internal_f->f_flags & F_LSYMS)) | |
253 | abfd->flags |= HAS_LOCALS; | |
254 | ||
255 | /* FIXME: How can we set D_PAGED correctly? */ | |
256 | if ((internal_f->f_flags & F_EXEC) != 0) | |
257 | abfd->flags |= D_PAGED; | |
258 | ||
259 | bfd_get_symcount (abfd) = internal_f->f_nsyms; | |
260 | if (internal_f->f_nsyms) | |
261 | abfd->flags |= HAS_SYMS; | |
262 | ||
263 | if (internal_a != (struct internal_aouthdr *) NULL) | |
264 | bfd_get_start_address (abfd) = internal_a->entry; | |
265 | else | |
266 | bfd_get_start_address (abfd) = 0; | |
267 | ||
268 | /* Set up the tdata area. ECOFF uses its own routine, and overrides | |
269 | abfd->flags. */ | |
487e54f2 | 270 | tdata_save = abfd->tdata.any; |
c8e7bf0d | 271 | tdata = bfd_coff_mkobject_hook (abfd, (void *) internal_f, (void *) internal_a); |
252b5132 | 272 | if (tdata == NULL) |
487e54f2 | 273 | goto fail2; |
252b5132 RH |
274 | |
275 | scnhsz = bfd_coff_scnhsz (abfd); | |
dc810e39 | 276 | readsize = (bfd_size_type) nscns * scnhsz; |
a50b1753 | 277 | external_sections = (char *) bfd_alloc (abfd, readsize); |
252b5132 RH |
278 | if (!external_sections) |
279 | goto fail; | |
280 | ||
c8e7bf0d | 281 | if (bfd_bread ((void *) external_sections, readsize, abfd) != readsize) |
252b5132 RH |
282 | goto fail; |
283 | ||
363d7b14 | 284 | /* Set the arch/mach *before* swapping in sections; section header swapping |
244148ad | 285 | may depend on arch/mach info. */ |
c8e7bf0d | 286 | if (! bfd_coff_set_arch_mach_hook (abfd, (void *) internal_f)) |
363d7b14 TW |
287 | goto fail; |
288 | ||
e16bb312 | 289 | /* Now copy data as required; construct all asections etc. */ |
252b5132 RH |
290 | if (nscns != 0) |
291 | { | |
292 | unsigned int i; | |
293 | for (i = 0; i < nscns; i++) | |
294 | { | |
295 | struct internal_scnhdr tmp; | |
296 | bfd_coff_swap_scnhdr_in (abfd, | |
c8e7bf0d NC |
297 | (void *) (external_sections + i * scnhsz), |
298 | (void *) & tmp); | |
252b5132 RH |
299 | if (! make_a_section_from_file (abfd, &tmp, i + 1)) |
300 | goto fail; | |
301 | } | |
302 | } | |
303 | ||
252b5132 RH |
304 | return abfd->xvec; |
305 | ||
306 | fail: | |
307 | bfd_release (abfd, tdata); | |
487e54f2 AM |
308 | fail2: |
309 | abfd->tdata.any = tdata_save; | |
252b5132 RH |
310 | abfd->flags = oflags; |
311 | bfd_get_start_address (abfd) = ostart; | |
312 | return (const bfd_target *) NULL; | |
313 | } | |
314 | ||
315 | /* Turn a COFF file into a BFD, but fail with bfd_error_wrong_format if it is | |
316 | not a COFF file. This is also used by ECOFF. */ | |
317 | ||
318 | const bfd_target * | |
c8e7bf0d | 319 | coff_object_p (bfd *abfd) |
252b5132 | 320 | { |
dc810e39 AM |
321 | bfd_size_type filhsz; |
322 | bfd_size_type aoutsz; | |
323 | unsigned int nscns; | |
c8e7bf0d | 324 | void * filehdr; |
252b5132 RH |
325 | struct internal_filehdr internal_f; |
326 | struct internal_aouthdr internal_a; | |
327 | ||
c8e7bf0d | 328 | /* Figure out how much to read. */ |
252b5132 RH |
329 | filhsz = bfd_coff_filhsz (abfd); |
330 | aoutsz = bfd_coff_aoutsz (abfd); | |
331 | ||
332 | filehdr = bfd_alloc (abfd, filhsz); | |
333 | if (filehdr == NULL) | |
487e54f2 | 334 | return NULL; |
dc810e39 | 335 | if (bfd_bread (filehdr, filhsz, abfd) != filhsz) |
252b5132 RH |
336 | { |
337 | if (bfd_get_error () != bfd_error_system_call) | |
338 | bfd_set_error (bfd_error_wrong_format); | |
487e54f2 AM |
339 | bfd_release (abfd, filehdr); |
340 | return NULL; | |
252b5132 RH |
341 | } |
342 | bfd_coff_swap_filehdr_in (abfd, filehdr, &internal_f); | |
343 | bfd_release (abfd, filehdr); | |
344 | ||
b8819ab2 NC |
345 | /* The XCOFF format has two sizes for the f_opthdr. SMALL_AOUTSZ |
346 | (less than aoutsz) used in object files and AOUTSZ (equal to | |
347 | aoutsz) in executables. The bfd_coff_swap_aouthdr_in function | |
348 | expects this header to be aoutsz bytes in length, so we use that | |
349 | value in the call to bfd_alloc below. But we must be careful to | |
350 | only read in f_opthdr bytes in the call to bfd_bread. We should | |
351 | also attempt to catch corrupt or non-COFF binaries with a strange | |
352 | value for f_opthdr. */ | |
82e51918 | 353 | if (! bfd_coff_bad_format_hook (abfd, &internal_f) |
95f7d9f7 | 354 | || internal_f.f_opthdr > aoutsz) |
252b5132 RH |
355 | { |
356 | bfd_set_error (bfd_error_wrong_format); | |
487e54f2 | 357 | return NULL; |
252b5132 RH |
358 | } |
359 | nscns = internal_f.f_nscns; | |
360 | ||
361 | if (internal_f.f_opthdr) | |
362 | { | |
c8e7bf0d | 363 | void * opthdr; |
252b5132 RH |
364 | |
365 | opthdr = bfd_alloc (abfd, aoutsz); | |
366 | if (opthdr == NULL) | |
487e54f2 | 367 | return NULL; |
dc810e39 | 368 | if (bfd_bread (opthdr, (bfd_size_type) internal_f.f_opthdr, abfd) |
252b5132 RH |
369 | != internal_f.f_opthdr) |
370 | { | |
487e54f2 AM |
371 | bfd_release (abfd, opthdr); |
372 | return NULL; | |
252b5132 | 373 | } |
a1165289 NC |
374 | /* PR 17512: file: 11056-1136-0.004. */ |
375 | if (internal_f.f_opthdr < aoutsz) | |
376 | memset (((char *) opthdr) + internal_f.f_opthdr, 0, aoutsz - internal_f.f_opthdr); | |
377 | ||
c8e7bf0d | 378 | bfd_coff_swap_aouthdr_in (abfd, opthdr, (void *) &internal_a); |
487e54f2 | 379 | bfd_release (abfd, opthdr); |
252b5132 RH |
380 | } |
381 | ||
382 | return coff_real_object_p (abfd, nscns, &internal_f, | |
383 | (internal_f.f_opthdr != 0 | |
384 | ? &internal_a | |
385 | : (struct internal_aouthdr *) NULL)); | |
386 | } | |
387 | ||
388 | /* Get the BFD section from a COFF symbol section number. */ | |
389 | ||
390 | asection * | |
91d6fa6a | 391 | coff_section_from_bfd_index (bfd *abfd, int section_index) |
252b5132 | 392 | { |
198beae2 | 393 | struct bfd_section *answer = abfd->sections; |
252b5132 | 394 | |
91d6fa6a | 395 | if (section_index == N_ABS) |
252b5132 | 396 | return bfd_abs_section_ptr; |
91d6fa6a | 397 | if (section_index == N_UNDEF) |
252b5132 | 398 | return bfd_und_section_ptr; |
91d6fa6a | 399 | if (section_index == N_DEBUG) |
252b5132 RH |
400 | return bfd_abs_section_ptr; |
401 | ||
402 | while (answer) | |
403 | { | |
91d6fa6a | 404 | if (answer->target_index == section_index) |
252b5132 RH |
405 | return answer; |
406 | answer = answer->next; | |
407 | } | |
408 | ||
409 | /* We should not reach this point, but the SCO 3.2v4 /lib/libc_s.a | |
410 | has a bad symbol table in biglitpow.o. */ | |
411 | return bfd_und_section_ptr; | |
412 | } | |
413 | ||
414 | /* Get the upper bound of a COFF symbol table. */ | |
415 | ||
416 | long | |
c8e7bf0d | 417 | coff_get_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
418 | { |
419 | if (!bfd_coff_slurp_symbol_table (abfd)) | |
420 | return -1; | |
421 | ||
422 | return (bfd_get_symcount (abfd) + 1) * (sizeof (coff_symbol_type *)); | |
423 | } | |
424 | ||
252b5132 RH |
425 | /* Canonicalize a COFF symbol table. */ |
426 | ||
427 | long | |
c8e7bf0d | 428 | coff_canonicalize_symtab (bfd *abfd, asymbol **alocation) |
252b5132 RH |
429 | { |
430 | unsigned int counter; | |
431 | coff_symbol_type *symbase; | |
432 | coff_symbol_type **location = (coff_symbol_type **) alocation; | |
433 | ||
434 | if (!bfd_coff_slurp_symbol_table (abfd)) | |
435 | return -1; | |
436 | ||
437 | symbase = obj_symbols (abfd); | |
438 | counter = bfd_get_symcount (abfd); | |
439 | while (counter-- > 0) | |
440 | *location++ = symbase++; | |
441 | ||
442 | *location = NULL; | |
443 | ||
444 | return bfd_get_symcount (abfd); | |
445 | } | |
446 | ||
447 | /* Get the name of a symbol. The caller must pass in a buffer of size | |
448 | >= SYMNMLEN + 1. */ | |
449 | ||
450 | const char * | |
c8e7bf0d NC |
451 | _bfd_coff_internal_syment_name (bfd *abfd, |
452 | const struct internal_syment *sym, | |
453 | char *buf) | |
252b5132 RH |
454 | { |
455 | /* FIXME: It's not clear this will work correctly if sizeof | |
456 | (_n_zeroes) != 4. */ | |
457 | if (sym->_n._n_n._n_zeroes != 0 | |
458 | || sym->_n._n_n._n_offset == 0) | |
459 | { | |
460 | memcpy (buf, sym->_n._n_name, SYMNMLEN); | |
461 | buf[SYMNMLEN] = '\0'; | |
462 | return buf; | |
463 | } | |
464 | else | |
465 | { | |
466 | const char *strings; | |
467 | ||
468 | BFD_ASSERT (sym->_n._n_n._n_offset >= STRING_SIZE_SIZE); | |
469 | strings = obj_coff_strings (abfd); | |
470 | if (strings == NULL) | |
471 | { | |
472 | strings = _bfd_coff_read_string_table (abfd); | |
473 | if (strings == NULL) | |
474 | return NULL; | |
475 | } | |
cdb602b1 NC |
476 | /* PR 17910: Only check for string overflow if the length has been set. |
477 | Some DLLs, eg those produced by Visual Studio, may not set the length field. */ | |
478 | if (obj_coff_strings_len (abfd) > 0 | |
479 | && sym->_n._n_n._n_offset >= obj_coff_strings_len (abfd)) | |
5a3f568b | 480 | return NULL; |
252b5132 RH |
481 | return strings + sym->_n._n_n._n_offset; |
482 | } | |
483 | } | |
484 | ||
485 | /* Read in and swap the relocs. This returns a buffer holding the | |
b34976b6 | 486 | relocs for section SEC in file ABFD. If CACHE is TRUE and |
252b5132 RH |
487 | INTERNAL_RELOCS is NULL, the relocs read in will be saved in case |
488 | the function is called again. If EXTERNAL_RELOCS is not NULL, it | |
489 | is a buffer large enough to hold the unswapped relocs. If | |
490 | INTERNAL_RELOCS is not NULL, it is a buffer large enough to hold | |
b34976b6 | 491 | the swapped relocs. If REQUIRE_INTERNAL is TRUE, then the return |
252b5132 RH |
492 | value must be INTERNAL_RELOCS. The function returns NULL on error. */ |
493 | ||
494 | struct internal_reloc * | |
c8e7bf0d NC |
495 | _bfd_coff_read_internal_relocs (bfd *abfd, |
496 | asection *sec, | |
497 | bfd_boolean cache, | |
498 | bfd_byte *external_relocs, | |
499 | bfd_boolean require_internal, | |
500 | struct internal_reloc *internal_relocs) | |
252b5132 RH |
501 | { |
502 | bfd_size_type relsz; | |
503 | bfd_byte *free_external = NULL; | |
504 | struct internal_reloc *free_internal = NULL; | |
505 | bfd_byte *erel; | |
506 | bfd_byte *erel_end; | |
507 | struct internal_reloc *irel; | |
dc810e39 | 508 | bfd_size_type amt; |
252b5132 | 509 | |
9d7038d3 MS |
510 | if (sec->reloc_count == 0) |
511 | return internal_relocs; /* Nothing to do. */ | |
512 | ||
252b5132 RH |
513 | if (coff_section_data (abfd, sec) != NULL |
514 | && coff_section_data (abfd, sec)->relocs != NULL) | |
515 | { | |
516 | if (! require_internal) | |
517 | return coff_section_data (abfd, sec)->relocs; | |
518 | memcpy (internal_relocs, coff_section_data (abfd, sec)->relocs, | |
519 | sec->reloc_count * sizeof (struct internal_reloc)); | |
520 | return internal_relocs; | |
521 | } | |
522 | ||
523 | relsz = bfd_coff_relsz (abfd); | |
524 | ||
dc810e39 | 525 | amt = sec->reloc_count * relsz; |
252b5132 RH |
526 | if (external_relocs == NULL) |
527 | { | |
a50b1753 | 528 | free_external = (bfd_byte *) bfd_malloc (amt); |
9d7038d3 | 529 | if (free_external == NULL) |
252b5132 RH |
530 | goto error_return; |
531 | external_relocs = free_external; | |
532 | } | |
533 | ||
534 | if (bfd_seek (abfd, sec->rel_filepos, SEEK_SET) != 0 | |
dc810e39 | 535 | || bfd_bread (external_relocs, amt, abfd) != amt) |
252b5132 RH |
536 | goto error_return; |
537 | ||
538 | if (internal_relocs == NULL) | |
539 | { | |
dc810e39 AM |
540 | amt = sec->reloc_count; |
541 | amt *= sizeof (struct internal_reloc); | |
a50b1753 | 542 | free_internal = (struct internal_reloc *) bfd_malloc (amt); |
9d7038d3 | 543 | if (free_internal == NULL) |
252b5132 RH |
544 | goto error_return; |
545 | internal_relocs = free_internal; | |
546 | } | |
547 | ||
548 | /* Swap in the relocs. */ | |
549 | erel = external_relocs; | |
550 | erel_end = erel + relsz * sec->reloc_count; | |
551 | irel = internal_relocs; | |
552 | for (; erel < erel_end; erel += relsz, irel++) | |
c8e7bf0d | 553 | bfd_coff_swap_reloc_in (abfd, (void *) erel, (void *) irel); |
252b5132 RH |
554 | |
555 | if (free_external != NULL) | |
556 | { | |
557 | free (free_external); | |
558 | free_external = NULL; | |
559 | } | |
560 | ||
9ee2139f | 561 | if (cache && free_internal != NULL) |
252b5132 | 562 | { |
9ee2139f | 563 | if (coff_section_data (abfd, sec) == NULL) |
252b5132 | 564 | { |
9ee2139f MS |
565 | amt = sizeof (struct coff_section_tdata); |
566 | sec->used_by_bfd = bfd_zalloc (abfd, amt); | |
567 | if (sec->used_by_bfd == NULL) | |
568 | goto error_return; | |
569 | coff_section_data (abfd, sec)->contents = NULL; | |
252b5132 | 570 | } |
9ee2139f | 571 | coff_section_data (abfd, sec)->relocs = free_internal; |
252b5132 RH |
572 | } |
573 | ||
574 | return internal_relocs; | |
575 | ||
576 | error_return: | |
577 | if (free_external != NULL) | |
578 | free (free_external); | |
579 | if (free_internal != NULL) | |
580 | free (free_internal); | |
581 | return NULL; | |
582 | } | |
583 | ||
584 | /* Set lineno_count for the output sections of a COFF file. */ | |
585 | ||
586 | int | |
c8e7bf0d | 587 | coff_count_linenumbers (bfd *abfd) |
252b5132 RH |
588 | { |
589 | unsigned int limit = bfd_get_symcount (abfd); | |
590 | unsigned int i; | |
591 | int total = 0; | |
592 | asymbol **p; | |
593 | asection *s; | |
594 | ||
595 | if (limit == 0) | |
596 | { | |
597 | /* This may be from the backend linker, in which case the | |
07d6d2b8 | 598 | lineno_count in the sections is correct. */ |
252b5132 RH |
599 | for (s = abfd->sections; s != NULL; s = s->next) |
600 | total += s->lineno_count; | |
601 | return total; | |
602 | } | |
603 | ||
604 | for (s = abfd->sections; s != NULL; s = s->next) | |
605 | BFD_ASSERT (s->lineno_count == 0); | |
606 | ||
607 | for (p = abfd->outsymbols, i = 0; i < limit; i++, p++) | |
608 | { | |
609 | asymbol *q_maybe = *p; | |
610 | ||
9bd09e22 | 611 | if (bfd_family_coff (bfd_asymbol_bfd (q_maybe))) |
252b5132 RH |
612 | { |
613 | coff_symbol_type *q = coffsymbol (q_maybe); | |
614 | ||
615 | /* The AIX 4.1 compiler can sometimes generate line numbers | |
07d6d2b8 AM |
616 | attached to debugging symbols. We try to simply ignore |
617 | those here. */ | |
252b5132 RH |
618 | if (q->lineno != NULL |
619 | && q->symbol.section->owner != NULL) | |
620 | { | |
621 | /* This symbol has line numbers. Increment the owning | |
07d6d2b8 | 622 | section's linenumber count. */ |
252b5132 RH |
623 | alent *l = q->lineno; |
624 | ||
84c254c6 | 625 | do |
252b5132 | 626 | { |
84c254c6 | 627 | asection * sec = q->symbol.section->output_section; |
b34976b6 | 628 | |
84c254c6 NC |
629 | /* Do not try to update fields in read-only sections. */ |
630 | if (! bfd_is_const_section (sec)) | |
631 | sec->lineno_count ++; | |
632 | ||
252b5132 | 633 | ++total; |
252b5132 RH |
634 | ++l; |
635 | } | |
84c254c6 | 636 | while (l->line_number != 0); |
252b5132 RH |
637 | } |
638 | } | |
639 | } | |
640 | ||
641 | return total; | |
642 | } | |
643 | ||
252b5132 | 644 | static void |
c8e7bf0d NC |
645 | fixup_symbol_value (bfd *abfd, |
646 | coff_symbol_type *coff_symbol_ptr, | |
647 | struct internal_syment *syment) | |
252b5132 | 648 | { |
c8e7bf0d | 649 | /* Normalize the symbol flags. */ |
68ffbac6 | 650 | if (coff_symbol_ptr->symbol.section |
ac38308c | 651 | && bfd_is_com_section (coff_symbol_ptr->symbol.section)) |
252b5132 | 652 | { |
c8e7bf0d | 653 | /* A common symbol is undefined with a value. */ |
252b5132 RH |
654 | syment->n_scnum = N_UNDEF; |
655 | syment->n_value = coff_symbol_ptr->symbol.value; | |
656 | } | |
703153b5 ILT |
657 | else if ((coff_symbol_ptr->symbol.flags & BSF_DEBUGGING) != 0 |
658 | && (coff_symbol_ptr->symbol.flags & BSF_DEBUGGING_RELOC) == 0) | |
252b5132 RH |
659 | { |
660 | syment->n_value = coff_symbol_ptr->symbol.value; | |
661 | } | |
662 | else if (bfd_is_und_section (coff_symbol_ptr->symbol.section)) | |
663 | { | |
664 | syment->n_scnum = N_UNDEF; | |
665 | syment->n_value = 0; | |
666 | } | |
7bb9db4d | 667 | /* FIXME: Do we need to handle the absolute section here? */ |
252b5132 RH |
668 | else |
669 | { | |
670 | if (coff_symbol_ptr->symbol.section) | |
671 | { | |
672 | syment->n_scnum = | |
673 | coff_symbol_ptr->symbol.section->output_section->target_index; | |
674 | ||
675 | syment->n_value = (coff_symbol_ptr->symbol.value | |
676 | + coff_symbol_ptr->symbol.section->output_offset); | |
677 | if (! obj_pe (abfd)) | |
07d6d2b8 AM |
678 | { |
679 | syment->n_value += (syment->n_sclass == C_STATLAB) | |
680 | ? coff_symbol_ptr->symbol.section->output_section->lma | |
681 | : coff_symbol_ptr->symbol.section->output_section->vma; | |
682 | } | |
252b5132 RH |
683 | } |
684 | else | |
685 | { | |
686 | BFD_ASSERT (0); | |
687 | /* This can happen, but I don't know why yet (steve@cygnus.com) */ | |
688 | syment->n_scnum = N_ABS; | |
689 | syment->n_value = coff_symbol_ptr->symbol.value; | |
690 | } | |
691 | } | |
692 | } | |
693 | ||
694 | /* Run through all the symbols in the symbol table and work out what | |
695 | their indexes into the symbol table will be when output. | |
696 | ||
697 | Coff requires that each C_FILE symbol points to the next one in the | |
698 | chain, and that the last one points to the first external symbol. We | |
699 | do that here too. */ | |
700 | ||
b34976b6 | 701 | bfd_boolean |
c8e7bf0d | 702 | coff_renumber_symbols (bfd *bfd_ptr, int *first_undef) |
252b5132 RH |
703 | { |
704 | unsigned int symbol_count = bfd_get_symcount (bfd_ptr); | |
705 | asymbol **symbol_ptr_ptr = bfd_ptr->outsymbols; | |
706 | unsigned int native_index = 0; | |
c8e7bf0d | 707 | struct internal_syment *last_file = NULL; |
252b5132 RH |
708 | unsigned int symbol_index; |
709 | ||
710 | /* COFF demands that undefined symbols come after all other symbols. | |
711 | Since we don't need to impose this extra knowledge on all our | |
712 | client programs, deal with that here. Sort the symbol table; | |
713 | just move the undefined symbols to the end, leaving the rest | |
714 | alone. The O'Reilly book says that defined global symbols come | |
715 | at the end before the undefined symbols, so we do that here as | |
716 | well. */ | |
717 | /* @@ Do we have some condition we could test for, so we don't always | |
718 | have to do this? I don't think relocatability is quite right, but | |
719 | I'm not certain. [raeburn:19920508.1711EST] */ | |
720 | { | |
721 | asymbol **newsyms; | |
722 | unsigned int i; | |
dc810e39 | 723 | bfd_size_type amt; |
252b5132 | 724 | |
dc810e39 | 725 | amt = sizeof (asymbol *) * ((bfd_size_type) symbol_count + 1); |
a50b1753 | 726 | newsyms = (asymbol **) bfd_alloc (bfd_ptr, amt); |
252b5132 | 727 | if (!newsyms) |
b34976b6 | 728 | return FALSE; |
252b5132 RH |
729 | bfd_ptr->outsymbols = newsyms; |
730 | for (i = 0; i < symbol_count; i++) | |
731 | if ((symbol_ptr_ptr[i]->flags & BSF_NOT_AT_END) != 0 | |
732 | || (!bfd_is_und_section (symbol_ptr_ptr[i]->section) | |
733 | && !bfd_is_com_section (symbol_ptr_ptr[i]->section) | |
734 | && ((symbol_ptr_ptr[i]->flags & BSF_FUNCTION) != 0 | |
735 | || ((symbol_ptr_ptr[i]->flags & (BSF_GLOBAL | BSF_WEAK)) | |
736 | == 0)))) | |
737 | *newsyms++ = symbol_ptr_ptr[i]; | |
738 | ||
739 | for (i = 0; i < symbol_count; i++) | |
740 | if ((symbol_ptr_ptr[i]->flags & BSF_NOT_AT_END) == 0 | |
741 | && !bfd_is_und_section (symbol_ptr_ptr[i]->section) | |
742 | && (bfd_is_com_section (symbol_ptr_ptr[i]->section) | |
743 | || ((symbol_ptr_ptr[i]->flags & BSF_FUNCTION) == 0 | |
744 | && ((symbol_ptr_ptr[i]->flags & (BSF_GLOBAL | BSF_WEAK)) | |
745 | != 0)))) | |
746 | *newsyms++ = symbol_ptr_ptr[i]; | |
747 | ||
748 | *first_undef = newsyms - bfd_ptr->outsymbols; | |
749 | ||
750 | for (i = 0; i < symbol_count; i++) | |
751 | if ((symbol_ptr_ptr[i]->flags & BSF_NOT_AT_END) == 0 | |
752 | && bfd_is_und_section (symbol_ptr_ptr[i]->section)) | |
753 | *newsyms++ = symbol_ptr_ptr[i]; | |
754 | *newsyms = (asymbol *) NULL; | |
755 | symbol_ptr_ptr = bfd_ptr->outsymbols; | |
756 | } | |
757 | ||
758 | for (symbol_index = 0; symbol_index < symbol_count; symbol_index++) | |
759 | { | |
f4943d82 | 760 | coff_symbol_type *coff_symbol_ptr; |
a5c71af8 | 761 | |
f4943d82 | 762 | coff_symbol_ptr = coff_symbol_from (symbol_ptr_ptr[symbol_index]); |
244148ad | 763 | symbol_ptr_ptr[symbol_index]->udata.i = symbol_index; |
252b5132 RH |
764 | if (coff_symbol_ptr && coff_symbol_ptr->native) |
765 | { | |
766 | combined_entry_type *s = coff_symbol_ptr->native; | |
767 | int i; | |
768 | ||
a5c71af8 | 769 | BFD_ASSERT (s->is_sym); |
252b5132 RH |
770 | if (s->u.syment.n_sclass == C_FILE) |
771 | { | |
c8e7bf0d | 772 | if (last_file != NULL) |
252b5132 RH |
773 | last_file->n_value = native_index; |
774 | last_file = &(s->u.syment); | |
775 | } | |
776 | else | |
c8e7bf0d NC |
777 | /* Modify the symbol values according to their section and |
778 | type. */ | |
779 | fixup_symbol_value (bfd_ptr, coff_symbol_ptr, &(s->u.syment)); | |
252b5132 | 780 | |
252b5132 RH |
781 | for (i = 0; i < s->u.syment.n_numaux + 1; i++) |
782 | s[i].offset = native_index++; | |
783 | } | |
784 | else | |
c8e7bf0d | 785 | native_index++; |
252b5132 | 786 | } |
c8e7bf0d | 787 | |
252b5132 RH |
788 | obj_conv_table_size (bfd_ptr) = native_index; |
789 | ||
b34976b6 | 790 | return TRUE; |
252b5132 RH |
791 | } |
792 | ||
793 | /* Run thorough the symbol table again, and fix it so that all | |
794 | pointers to entries are changed to the entries' index in the output | |
795 | symbol table. */ | |
796 | ||
797 | void | |
c8e7bf0d | 798 | coff_mangle_symbols (bfd *bfd_ptr) |
252b5132 RH |
799 | { |
800 | unsigned int symbol_count = bfd_get_symcount (bfd_ptr); | |
801 | asymbol **symbol_ptr_ptr = bfd_ptr->outsymbols; | |
802 | unsigned int symbol_index; | |
803 | ||
804 | for (symbol_index = 0; symbol_index < symbol_count; symbol_index++) | |
805 | { | |
f4943d82 | 806 | coff_symbol_type *coff_symbol_ptr; |
252b5132 | 807 | |
f4943d82 | 808 | coff_symbol_ptr = coff_symbol_from (symbol_ptr_ptr[symbol_index]); |
252b5132 RH |
809 | if (coff_symbol_ptr && coff_symbol_ptr->native) |
810 | { | |
811 | int i; | |
812 | combined_entry_type *s = coff_symbol_ptr->native; | |
813 | ||
a5c71af8 | 814 | BFD_ASSERT (s->is_sym); |
252b5132 RH |
815 | if (s->fix_value) |
816 | { | |
817 | /* FIXME: We should use a union here. */ | |
dc810e39 | 818 | s->u.syment.n_value = |
d2df793a NC |
819 | (bfd_hostptr_t) ((combined_entry_type *) |
820 | ((bfd_hostptr_t) s->u.syment.n_value))->offset; | |
252b5132 RH |
821 | s->fix_value = 0; |
822 | } | |
823 | if (s->fix_line) | |
824 | { | |
825 | /* The value is the offset into the line number entries | |
07d6d2b8 AM |
826 | for the symbol's section. On output, the symbol's |
827 | section should be N_DEBUG. */ | |
252b5132 RH |
828 | s->u.syment.n_value = |
829 | (coff_symbol_ptr->symbol.section->output_section->line_filepos | |
830 | + s->u.syment.n_value * bfd_coff_linesz (bfd_ptr)); | |
831 | coff_symbol_ptr->symbol.section = | |
832 | coff_section_from_bfd_index (bfd_ptr, N_DEBUG); | |
833 | BFD_ASSERT (coff_symbol_ptr->symbol.flags & BSF_DEBUGGING); | |
834 | } | |
835 | for (i = 0; i < s->u.syment.n_numaux; i++) | |
836 | { | |
837 | combined_entry_type *a = s + i + 1; | |
e9af4700 | 838 | |
a5c71af8 | 839 | BFD_ASSERT (! a->is_sym); |
252b5132 RH |
840 | if (a->fix_tag) |
841 | { | |
842 | a->u.auxent.x_sym.x_tagndx.l = | |
843 | a->u.auxent.x_sym.x_tagndx.p->offset; | |
844 | a->fix_tag = 0; | |
845 | } | |
846 | if (a->fix_end) | |
847 | { | |
848 | a->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l = | |
849 | a->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p->offset; | |
850 | a->fix_end = 0; | |
851 | } | |
852 | if (a->fix_scnlen) | |
853 | { | |
854 | a->u.auxent.x_csect.x_scnlen.l = | |
855 | a->u.auxent.x_csect.x_scnlen.p->offset; | |
856 | a->fix_scnlen = 0; | |
857 | } | |
858 | } | |
859 | } | |
860 | } | |
861 | } | |
862 | ||
863 | static void | |
c8e7bf0d NC |
864 | coff_fix_symbol_name (bfd *abfd, |
865 | asymbol *symbol, | |
866 | combined_entry_type *native, | |
867 | bfd_size_type *string_size_p, | |
868 | asection **debug_string_section_p, | |
869 | bfd_size_type *debug_string_size_p) | |
252b5132 RH |
870 | { |
871 | unsigned int name_length; | |
872 | union internal_auxent *auxent; | |
873 | char *name = (char *) (symbol->name); | |
874 | ||
c8e7bf0d | 875 | if (name == NULL) |
252b5132 | 876 | { |
c8e7bf0d | 877 | /* COFF symbols always have names, so we'll make one up. */ |
252b5132 RH |
878 | symbol->name = "strange"; |
879 | name = (char *) symbol->name; | |
880 | } | |
881 | name_length = strlen (name); | |
882 | ||
a5c71af8 | 883 | BFD_ASSERT (native->is_sym); |
252b5132 RH |
884 | if (native->u.syment.n_sclass == C_FILE |
885 | && native->u.syment.n_numaux > 0) | |
886 | { | |
692b7d62 ILT |
887 | unsigned int filnmlen; |
888 | ||
7f6d05e8 CP |
889 | if (bfd_coff_force_symnames_in_strings (abfd)) |
890 | { | |
07d6d2b8 | 891 | native->u.syment._n._n_n._n_offset = |
7f6d05e8 CP |
892 | (*string_size_p + STRING_SIZE_SIZE); |
893 | native->u.syment._n._n_n._n_zeroes = 0; | |
894 | *string_size_p += 6; /* strlen(".file") + 1 */ | |
895 | } | |
896 | else | |
07d6d2b8 | 897 | strncpy (native->u.syment._n._n_name, ".file", SYMNMLEN); |
7f6d05e8 | 898 | |
a5c71af8 | 899 | BFD_ASSERT (! (native + 1)->is_sym); |
252b5132 RH |
900 | auxent = &(native + 1)->u.auxent; |
901 | ||
692b7d62 ILT |
902 | filnmlen = bfd_coff_filnmlen (abfd); |
903 | ||
252b5132 RH |
904 | if (bfd_coff_long_filenames (abfd)) |
905 | { | |
692b7d62 | 906 | if (name_length <= filnmlen) |
c8e7bf0d | 907 | strncpy (auxent->x_file.x_fname, name, filnmlen); |
252b5132 RH |
908 | else |
909 | { | |
910 | auxent->x_file.x_n.x_offset = *string_size_p + STRING_SIZE_SIZE; | |
911 | auxent->x_file.x_n.x_zeroes = 0; | |
912 | *string_size_p += name_length + 1; | |
913 | } | |
914 | } | |
915 | else | |
916 | { | |
692b7d62 ILT |
917 | strncpy (auxent->x_file.x_fname, name, filnmlen); |
918 | if (name_length > filnmlen) | |
919 | name[filnmlen] = '\0'; | |
252b5132 RH |
920 | } |
921 | } | |
922 | else | |
923 | { | |
7f6d05e8 | 924 | if (name_length <= SYMNMLEN && !bfd_coff_force_symnames_in_strings (abfd)) |
c8e7bf0d NC |
925 | /* This name will fit into the symbol neatly. */ |
926 | strncpy (native->u.syment._n._n_name, symbol->name, SYMNMLEN); | |
927 | ||
252b5132 RH |
928 | else if (!bfd_coff_symname_in_debug (abfd, &native->u.syment)) |
929 | { | |
930 | native->u.syment._n._n_n._n_offset = (*string_size_p | |
931 | + STRING_SIZE_SIZE); | |
932 | native->u.syment._n._n_n._n_zeroes = 0; | |
933 | *string_size_p += name_length + 1; | |
934 | } | |
935 | else | |
936 | { | |
dc810e39 | 937 | file_ptr filepos; |
7f6d05e8 CP |
938 | bfd_byte buf[4]; |
939 | int prefix_len = bfd_coff_debug_string_prefix_length (abfd); | |
252b5132 RH |
940 | |
941 | /* This name should be written into the .debug section. For | |
942 | some reason each name is preceded by a two byte length | |
943 | and also followed by a null byte. FIXME: We assume that | |
944 | the .debug section has already been created, and that it | |
945 | is large enough. */ | |
946 | if (*debug_string_section_p == (asection *) NULL) | |
947 | *debug_string_section_p = bfd_get_section_by_name (abfd, ".debug"); | |
948 | filepos = bfd_tell (abfd); | |
7f6d05e8 | 949 | if (prefix_len == 4) |
dc810e39 | 950 | bfd_put_32 (abfd, (bfd_vma) (name_length + 1), buf); |
7f6d05e8 | 951 | else |
dc810e39 | 952 | bfd_put_16 (abfd, (bfd_vma) (name_length + 1), buf); |
7f6d05e8 | 953 | |
252b5132 RH |
954 | if (!bfd_set_section_contents (abfd, |
955 | *debug_string_section_p, | |
c8e7bf0d | 956 | (void *) buf, |
252b5132 | 957 | (file_ptr) *debug_string_size_p, |
7f6d05e8 | 958 | (bfd_size_type) prefix_len) |
252b5132 RH |
959 | || !bfd_set_section_contents (abfd, |
960 | *debug_string_section_p, | |
c8e7bf0d | 961 | (void *) symbol->name, |
dc810e39 AM |
962 | (file_ptr) (*debug_string_size_p |
963 | + prefix_len), | |
252b5132 RH |
964 | (bfd_size_type) name_length + 1)) |
965 | abort (); | |
966 | if (bfd_seek (abfd, filepos, SEEK_SET) != 0) | |
967 | abort (); | |
244148ad | 968 | native->u.syment._n._n_n._n_offset = |
7f6d05e8 | 969 | *debug_string_size_p + prefix_len; |
252b5132 | 970 | native->u.syment._n._n_n._n_zeroes = 0; |
7f6d05e8 | 971 | *debug_string_size_p += name_length + 1 + prefix_len; |
252b5132 RH |
972 | } |
973 | } | |
974 | } | |
975 | ||
976 | /* We need to keep track of the symbol index so that when we write out | |
977 | the relocs we can get the index for a symbol. This method is a | |
978 | hack. FIXME. */ | |
979 | ||
980 | #define set_index(symbol, idx) ((symbol)->udata.i = (idx)) | |
981 | ||
982 | /* Write a symbol out to a COFF file. */ | |
983 | ||
b34976b6 | 984 | static bfd_boolean |
c8e7bf0d NC |
985 | coff_write_symbol (bfd *abfd, |
986 | asymbol *symbol, | |
987 | combined_entry_type *native, | |
988 | bfd_vma *written, | |
989 | bfd_size_type *string_size_p, | |
990 | asection **debug_string_section_p, | |
991 | bfd_size_type *debug_string_size_p) | |
252b5132 RH |
992 | { |
993 | unsigned int numaux = native->u.syment.n_numaux; | |
994 | int type = native->u.syment.n_type; | |
a50b1753 | 995 | int n_sclass = (int) native->u.syment.n_sclass; |
88e59394 DK |
996 | asection *output_section = symbol->section->output_section |
997 | ? symbol->section->output_section | |
998 | : symbol->section; | |
c8e7bf0d | 999 | void * buf; |
252b5132 RH |
1000 | bfd_size_type symesz; |
1001 | ||
a5c71af8 NC |
1002 | BFD_ASSERT (native->is_sym); |
1003 | ||
252b5132 RH |
1004 | if (native->u.syment.n_sclass == C_FILE) |
1005 | symbol->flags |= BSF_DEBUGGING; | |
1006 | ||
1007 | if (symbol->flags & BSF_DEBUGGING | |
1008 | && bfd_is_abs_section (symbol->section)) | |
c8e7bf0d NC |
1009 | native->u.syment.n_scnum = N_DEBUG; |
1010 | ||
252b5132 | 1011 | else if (bfd_is_abs_section (symbol->section)) |
c8e7bf0d NC |
1012 | native->u.syment.n_scnum = N_ABS; |
1013 | ||
252b5132 | 1014 | else if (bfd_is_und_section (symbol->section)) |
c8e7bf0d NC |
1015 | native->u.syment.n_scnum = N_UNDEF; |
1016 | ||
252b5132 | 1017 | else |
c8e7bf0d | 1018 | native->u.syment.n_scnum = |
88e59394 | 1019 | output_section->target_index; |
252b5132 RH |
1020 | |
1021 | coff_fix_symbol_name (abfd, symbol, native, string_size_p, | |
1022 | debug_string_section_p, debug_string_size_p); | |
1023 | ||
1024 | symesz = bfd_coff_symesz (abfd); | |
1025 | buf = bfd_alloc (abfd, symesz); | |
1026 | if (!buf) | |
b34976b6 | 1027 | return FALSE; |
252b5132 | 1028 | bfd_coff_swap_sym_out (abfd, &native->u.syment, buf); |
dc810e39 | 1029 | if (bfd_bwrite (buf, symesz, abfd) != symesz) |
b34976b6 | 1030 | return FALSE; |
252b5132 RH |
1031 | bfd_release (abfd, buf); |
1032 | ||
1033 | if (native->u.syment.n_numaux > 0) | |
1034 | { | |
1035 | bfd_size_type auxesz; | |
1036 | unsigned int j; | |
1037 | ||
1038 | auxesz = bfd_coff_auxesz (abfd); | |
1039 | buf = bfd_alloc (abfd, auxesz); | |
1040 | if (!buf) | |
b34976b6 | 1041 | return FALSE; |
252b5132 RH |
1042 | for (j = 0; j < native->u.syment.n_numaux; j++) |
1043 | { | |
a5c71af8 | 1044 | BFD_ASSERT (! (native + j + 1)->is_sym); |
252b5132 RH |
1045 | bfd_coff_swap_aux_out (abfd, |
1046 | &((native + j + 1)->u.auxent), | |
96d56e9f | 1047 | type, n_sclass, (int) j, |
252b5132 RH |
1048 | native->u.syment.n_numaux, |
1049 | buf); | |
dc810e39 | 1050 | if (bfd_bwrite (buf, auxesz, abfd) != auxesz) |
b34976b6 | 1051 | return FALSE; |
252b5132 RH |
1052 | } |
1053 | bfd_release (abfd, buf); | |
1054 | } | |
1055 | ||
1056 | /* Store the index for use when we write out the relocs. */ | |
1057 | set_index (symbol, *written); | |
1058 | ||
1059 | *written += numaux + 1; | |
b34976b6 | 1060 | return TRUE; |
252b5132 RH |
1061 | } |
1062 | ||
1063 | /* Write out a symbol to a COFF file that does not come from a COFF | |
1064 | file originally. This symbol may have been created by the linker, | |
1065 | or we may be linking a non COFF file to a COFF file. */ | |
1066 | ||
e7ebb214 | 1067 | bfd_boolean |
c8e7bf0d NC |
1068 | coff_write_alien_symbol (bfd *abfd, |
1069 | asymbol *symbol, | |
e7ebb214 | 1070 | struct internal_syment *isym, |
270f8245 | 1071 | union internal_auxent *iaux, |
c8e7bf0d NC |
1072 | bfd_vma *written, |
1073 | bfd_size_type *string_size_p, | |
1074 | asection **debug_string_section_p, | |
1075 | bfd_size_type *debug_string_size_p) | |
252b5132 RH |
1076 | { |
1077 | combined_entry_type *native; | |
e7ebb214 | 1078 | combined_entry_type dummy[2]; |
88e59394 DK |
1079 | asection *output_section = symbol->section->output_section |
1080 | ? symbol->section->output_section | |
1081 | : symbol->section; | |
07c7ed6d | 1082 | struct bfd_link_info *link_info = coff_data (abfd)->link_info; |
e7ebb214 | 1083 | bfd_boolean ret; |
252b5132 | 1084 | |
07c7ed6d KT |
1085 | if ((!link_info || link_info->strip_discarded) |
1086 | && !bfd_is_abs_section (symbol->section) | |
1087 | && symbol->section->output_section == bfd_abs_section_ptr) | |
1088 | { | |
1089 | symbol->name = ""; | |
e7ebb214 | 1090 | if (isym != NULL) |
07d6d2b8 | 1091 | memset (isym, 0, sizeof (*isym)); |
07c7ed6d KT |
1092 | return TRUE; |
1093 | } | |
e7ebb214 | 1094 | native = dummy; |
a5c71af8 NC |
1095 | native->is_sym = TRUE; |
1096 | native[1].is_sym = FALSE; | |
252b5132 RH |
1097 | native->u.syment.n_type = T_NULL; |
1098 | native->u.syment.n_flags = 0; | |
e7ebb214 | 1099 | native->u.syment.n_numaux = 0; |
252b5132 RH |
1100 | if (bfd_is_und_section (symbol->section)) |
1101 | { | |
1102 | native->u.syment.n_scnum = N_UNDEF; | |
1103 | native->u.syment.n_value = symbol->value; | |
1104 | } | |
1105 | else if (bfd_is_com_section (symbol->section)) | |
1106 | { | |
1107 | native->u.syment.n_scnum = N_UNDEF; | |
1108 | native->u.syment.n_value = symbol->value; | |
1109 | } | |
e7ebb214 JB |
1110 | else if (symbol->flags & BSF_FILE) |
1111 | { | |
1112 | native->u.syment.n_scnum = N_DEBUG; | |
1113 | native->u.syment.n_numaux = 1; | |
1114 | } | |
252b5132 RH |
1115 | else if (symbol->flags & BSF_DEBUGGING) |
1116 | { | |
1117 | /* There isn't much point to writing out a debugging symbol | |
07d6d2b8 AM |
1118 | unless we are prepared to convert it into COFF debugging |
1119 | format. So, we just ignore them. We must clobber the symbol | |
1120 | name to keep it from being put in the string table. */ | |
252b5132 | 1121 | symbol->name = ""; |
e7ebb214 | 1122 | if (isym != NULL) |
07d6d2b8 | 1123 | memset (isym, 0, sizeof (*isym)); |
b34976b6 | 1124 | return TRUE; |
252b5132 RH |
1125 | } |
1126 | else | |
1127 | { | |
88e59394 | 1128 | native->u.syment.n_scnum = output_section->target_index; |
252b5132 RH |
1129 | native->u.syment.n_value = (symbol->value |
1130 | + symbol->section->output_offset); | |
1131 | if (! obj_pe (abfd)) | |
88e59394 | 1132 | native->u.syment.n_value += output_section->vma; |
252b5132 | 1133 | |
08da05b0 | 1134 | /* Copy the any flags from the file header into the symbol. |
07d6d2b8 | 1135 | FIXME: Why? */ |
252b5132 | 1136 | { |
f4943d82 | 1137 | coff_symbol_type *c = coff_symbol_from (symbol); |
252b5132 RH |
1138 | if (c != (coff_symbol_type *) NULL) |
1139 | native->u.syment.n_flags = bfd_asymbol_bfd (&c->symbol)->flags; | |
1140 | } | |
1141 | } | |
1142 | ||
1143 | native->u.syment.n_type = 0; | |
e7ebb214 JB |
1144 | if (symbol->flags & BSF_FILE) |
1145 | native->u.syment.n_sclass = C_FILE; | |
1146 | else if (symbol->flags & BSF_LOCAL) | |
252b5132 RH |
1147 | native->u.syment.n_sclass = C_STAT; |
1148 | else if (symbol->flags & BSF_WEAK) | |
1149 | native->u.syment.n_sclass = obj_pe (abfd) ? C_NT_WEAK : C_WEAKEXT; | |
1150 | else | |
1151 | native->u.syment.n_sclass = C_EXT; | |
252b5132 | 1152 | |
e7ebb214 JB |
1153 | ret = coff_write_symbol (abfd, symbol, native, written, string_size_p, |
1154 | debug_string_section_p, debug_string_size_p); | |
1155 | if (isym != NULL) | |
1156 | *isym = native->u.syment; | |
270f8245 JB |
1157 | if (iaux != NULL && native->u.syment.n_numaux) |
1158 | *iaux = native[1].u.auxent; | |
e7ebb214 | 1159 | return ret; |
252b5132 RH |
1160 | } |
1161 | ||
1162 | /* Write a native symbol to a COFF file. */ | |
1163 | ||
b34976b6 | 1164 | static bfd_boolean |
c8e7bf0d NC |
1165 | coff_write_native_symbol (bfd *abfd, |
1166 | coff_symbol_type *symbol, | |
1167 | bfd_vma *written, | |
1168 | bfd_size_type *string_size_p, | |
1169 | asection **debug_string_section_p, | |
1170 | bfd_size_type *debug_string_size_p) | |
252b5132 RH |
1171 | { |
1172 | combined_entry_type *native = symbol->native; | |
1173 | alent *lineno = symbol->lineno; | |
07c7ed6d KT |
1174 | struct bfd_link_info *link_info = coff_data (abfd)->link_info; |
1175 | ||
1176 | if ((!link_info || link_info->strip_discarded) | |
1177 | && !bfd_is_abs_section (symbol->symbol.section) | |
1178 | && symbol->symbol.section->output_section == bfd_abs_section_ptr) | |
1179 | { | |
1180 | symbol->symbol.name = ""; | |
1181 | return TRUE; | |
1182 | } | |
252b5132 | 1183 | |
a5c71af8 | 1184 | BFD_ASSERT (native->is_sym); |
252b5132 RH |
1185 | /* If this symbol has an associated line number, we must store the |
1186 | symbol index in the line number field. We also tag the auxent to | |
1187 | point to the right place in the lineno table. */ | |
1188 | if (lineno && !symbol->done_lineno && symbol->symbol.section->owner != NULL) | |
1189 | { | |
1190 | unsigned int count = 0; | |
c8e7bf0d | 1191 | |
252b5132 RH |
1192 | lineno[count].u.offset = *written; |
1193 | if (native->u.syment.n_numaux) | |
1194 | { | |
1195 | union internal_auxent *a = &((native + 1)->u.auxent); | |
1196 | ||
1197 | a->x_sym.x_fcnary.x_fcn.x_lnnoptr = | |
1198 | symbol->symbol.section->output_section->moving_line_filepos; | |
1199 | } | |
1200 | ||
1201 | /* Count and relocate all other linenumbers. */ | |
1202 | count++; | |
1203 | while (lineno[count].line_number != 0) | |
1204 | { | |
252b5132 RH |
1205 | lineno[count].u.offset += |
1206 | (symbol->symbol.section->output_section->vma | |
1207 | + symbol->symbol.section->output_offset); | |
252b5132 RH |
1208 | count++; |
1209 | } | |
b34976b6 | 1210 | symbol->done_lineno = TRUE; |
252b5132 | 1211 | |
84c254c6 NC |
1212 | if (! bfd_is_const_section (symbol->symbol.section->output_section)) |
1213 | symbol->symbol.section->output_section->moving_line_filepos += | |
1214 | count * bfd_coff_linesz (abfd); | |
252b5132 RH |
1215 | } |
1216 | ||
1217 | return coff_write_symbol (abfd, &(symbol->symbol), native, written, | |
1218 | string_size_p, debug_string_section_p, | |
1219 | debug_string_size_p); | |
1220 | } | |
1221 | ||
e144674a | 1222 | static void |
52d45da3 AM |
1223 | null_error_handler (const char *fmt ATTRIBUTE_UNUSED, |
1224 | va_list ap ATTRIBUTE_UNUSED) | |
e144674a NC |
1225 | { |
1226 | } | |
1227 | ||
252b5132 RH |
1228 | /* Write out the COFF symbols. */ |
1229 | ||
b34976b6 | 1230 | bfd_boolean |
c8e7bf0d | 1231 | coff_write_symbols (bfd *abfd) |
252b5132 RH |
1232 | { |
1233 | bfd_size_type string_size; | |
1234 | asection *debug_string_section; | |
1235 | bfd_size_type debug_string_size; | |
1236 | unsigned int i; | |
1237 | unsigned int limit = bfd_get_symcount (abfd); | |
f075ee0c | 1238 | bfd_vma written = 0; |
252b5132 RH |
1239 | asymbol **p; |
1240 | ||
1241 | string_size = 0; | |
1242 | debug_string_section = NULL; | |
1243 | debug_string_size = 0; | |
1244 | ||
1245 | /* If this target supports long section names, they must be put into | |
1246 | the string table. This is supported by PE. This code must | |
1247 | handle section names just as they are handled in | |
1248 | coff_write_object_contents. */ | |
1249 | if (bfd_coff_long_section_names (abfd)) | |
1250 | { | |
1251 | asection *o; | |
1252 | ||
1253 | for (o = abfd->sections; o != NULL; o = o->next) | |
1254 | { | |
1255 | size_t len; | |
1256 | ||
1257 | len = strlen (o->name); | |
1258 | if (len > SCNNMLEN) | |
1259 | string_size += len + 1; | |
1260 | } | |
1261 | } | |
1262 | ||
c8e7bf0d | 1263 | /* Seek to the right place. */ |
252b5132 | 1264 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0) |
b34976b6 | 1265 | return FALSE; |
252b5132 | 1266 | |
c8e7bf0d | 1267 | /* Output all the symbols we have. */ |
252b5132 RH |
1268 | written = 0; |
1269 | for (p = abfd->outsymbols, i = 0; i < limit; i++, p++) | |
1270 | { | |
1271 | asymbol *symbol = *p; | |
f4943d82 | 1272 | coff_symbol_type *c_symbol = coff_symbol_from (symbol); |
252b5132 RH |
1273 | |
1274 | if (c_symbol == (coff_symbol_type *) NULL | |
1275 | || c_symbol->native == (combined_entry_type *) NULL) | |
1276 | { | |
270f8245 | 1277 | if (!coff_write_alien_symbol (abfd, symbol, NULL, NULL, &written, |
e7ebb214 | 1278 | &string_size, &debug_string_section, |
252b5132 | 1279 | &debug_string_size)) |
b34976b6 | 1280 | return FALSE; |
252b5132 RH |
1281 | } |
1282 | else | |
1283 | { | |
e144674a NC |
1284 | if (coff_backend_info (abfd)->_bfd_coff_classify_symbol != NULL) |
1285 | { | |
1286 | bfd_error_handler_type current_error_handler; | |
96d56e9f | 1287 | enum coff_symbol_classification sym_class; |
e144674a NC |
1288 | unsigned char *n_sclass; |
1289 | ||
1290 | /* Suppress error reporting by bfd_coff_classify_symbol. | |
1291 | Error messages can be generated when we are processing a local | |
1292 | symbol which has no associated section and we do not have to | |
1293 | worry about this, all we need to know is that it is local. */ | |
1294 | current_error_handler = bfd_set_error_handler (null_error_handler); | |
a5c71af8 | 1295 | BFD_ASSERT (c_symbol->native->is_sym); |
96d56e9f | 1296 | sym_class = bfd_coff_classify_symbol (abfd, |
a5c71af8 | 1297 | &c_symbol->native->u.syment); |
e144674a | 1298 | (void) bfd_set_error_handler (current_error_handler); |
96d56e9f | 1299 | |
e144674a NC |
1300 | n_sclass = &c_symbol->native->u.syment.n_sclass; |
1301 | ||
1302 | /* If the symbol class has been changed (eg objcopy/ld script/etc) | |
1303 | we cannot retain the existing sclass from the original symbol. | |
1304 | Weak symbols only have one valid sclass, so just set it always. | |
1305 | If it is not local class and should be, set it C_STAT. | |
1306 | If it is global and not classified as global, or if it is | |
1307 | weak (which is also classified as global), set it C_EXT. */ | |
1308 | ||
1309 | if (symbol->flags & BSF_WEAK) | |
1310 | *n_sclass = obj_pe (abfd) ? C_NT_WEAK : C_WEAKEXT; | |
96d56e9f | 1311 | else if (symbol->flags & BSF_LOCAL && sym_class != COFF_SYMBOL_LOCAL) |
e144674a NC |
1312 | *n_sclass = C_STAT; |
1313 | else if (symbol->flags & BSF_GLOBAL | |
96d56e9f | 1314 | && (sym_class != COFF_SYMBOL_GLOBAL |
e144674a NC |
1315 | #ifdef COFF_WITH_PE |
1316 | || *n_sclass == C_NT_WEAK | |
1317 | #endif | |
1318 | || *n_sclass == C_WEAKEXT)) | |
1319 | c_symbol->native->u.syment.n_sclass = C_EXT; | |
1320 | } | |
1321 | ||
252b5132 RH |
1322 | if (!coff_write_native_symbol (abfd, c_symbol, &written, |
1323 | &string_size, &debug_string_section, | |
1324 | &debug_string_size)) | |
b34976b6 | 1325 | return FALSE; |
252b5132 RH |
1326 | } |
1327 | } | |
1328 | ||
1329 | obj_raw_syment_count (abfd) = written; | |
1330 | ||
c8e7bf0d | 1331 | /* Now write out strings. */ |
252b5132 RH |
1332 | if (string_size != 0) |
1333 | { | |
1334 | unsigned int size = string_size + STRING_SIZE_SIZE; | |
1335 | bfd_byte buffer[STRING_SIZE_SIZE]; | |
1336 | ||
1337 | #if STRING_SIZE_SIZE == 4 | |
dc810e39 | 1338 | H_PUT_32 (abfd, size, buffer); |
252b5132 | 1339 | #else |
dc810e39 | 1340 | #error Change H_PUT_32 |
252b5132 | 1341 | #endif |
c8e7bf0d | 1342 | if (bfd_bwrite ((void *) buffer, (bfd_size_type) sizeof (buffer), abfd) |
dc810e39 | 1343 | != sizeof (buffer)) |
b34976b6 | 1344 | return FALSE; |
252b5132 RH |
1345 | |
1346 | /* Handle long section names. This code must handle section | |
1347 | names just as they are handled in coff_write_object_contents. */ | |
1348 | if (bfd_coff_long_section_names (abfd)) | |
1349 | { | |
1350 | asection *o; | |
1351 | ||
1352 | for (o = abfd->sections; o != NULL; o = o->next) | |
1353 | { | |
1354 | size_t len; | |
1355 | ||
1356 | len = strlen (o->name); | |
1357 | if (len > SCNNMLEN) | |
1358 | { | |
dc810e39 AM |
1359 | if (bfd_bwrite (o->name, (bfd_size_type) (len + 1), abfd) |
1360 | != len + 1) | |
b34976b6 | 1361 | return FALSE; |
252b5132 RH |
1362 | } |
1363 | } | |
1364 | } | |
1365 | ||
1366 | for (p = abfd->outsymbols, i = 0; | |
1367 | i < limit; | |
1368 | i++, p++) | |
1369 | { | |
1370 | asymbol *q = *p; | |
1371 | size_t name_length = strlen (q->name); | |
f4943d82 | 1372 | coff_symbol_type *c_symbol = coff_symbol_from (q); |
252b5132 RH |
1373 | size_t maxlen; |
1374 | ||
1375 | /* Figure out whether the symbol name should go in the string | |
1376 | table. Symbol names that are short enough are stored | |
1377 | directly in the syment structure. File names permit a | |
1378 | different, longer, length in the syment structure. On | |
1379 | XCOFF, some symbol names are stored in the .debug section | |
1380 | rather than in the string table. */ | |
1381 | ||
1382 | if (c_symbol == NULL | |
1383 | || c_symbol->native == NULL) | |
c8e7bf0d NC |
1384 | /* This is not a COFF symbol, so it certainly is not a |
1385 | file name, nor does it go in the .debug section. */ | |
1386 | maxlen = bfd_coff_force_symnames_in_strings (abfd) ? 0 : SYMNMLEN; | |
1387 | ||
a5c71af8 NC |
1388 | else if (! c_symbol->native->is_sym) |
1389 | maxlen = bfd_coff_force_symnames_in_strings (abfd) ? 0 : SYMNMLEN; | |
1b786873 | 1390 | |
252b5132 RH |
1391 | else if (bfd_coff_symname_in_debug (abfd, |
1392 | &c_symbol->native->u.syment)) | |
c8e7bf0d NC |
1393 | /* This symbol name is in the XCOFF .debug section. |
1394 | Don't write it into the string table. */ | |
1395 | maxlen = name_length; | |
1396 | ||
252b5132 RH |
1397 | else if (c_symbol->native->u.syment.n_sclass == C_FILE |
1398 | && c_symbol->native->u.syment.n_numaux > 0) | |
7f6d05e8 | 1399 | { |
244148ad | 1400 | if (bfd_coff_force_symnames_in_strings (abfd)) |
dc810e39 AM |
1401 | { |
1402 | if (bfd_bwrite (".file", (bfd_size_type) 6, abfd) != 6) | |
b34976b6 | 1403 | return FALSE; |
dc810e39 | 1404 | } |
7f6d05e8 CP |
1405 | maxlen = bfd_coff_filnmlen (abfd); |
1406 | } | |
252b5132 | 1407 | else |
7f6d05e8 | 1408 | maxlen = bfd_coff_force_symnames_in_strings (abfd) ? 0 : SYMNMLEN; |
252b5132 RH |
1409 | |
1410 | if (name_length > maxlen) | |
1411 | { | |
c8e7bf0d | 1412 | if (bfd_bwrite ((void *) (q->name), (bfd_size_type) name_length + 1, |
dc810e39 | 1413 | abfd) != name_length + 1) |
b34976b6 | 1414 | return FALSE; |
252b5132 RH |
1415 | } |
1416 | } | |
1417 | } | |
1418 | else | |
1419 | { | |
1420 | /* We would normally not write anything here, but we'll write | |
07d6d2b8 AM |
1421 | out 4 so that any stupid coff reader which tries to read the |
1422 | string table even when there isn't one won't croak. */ | |
252b5132 RH |
1423 | unsigned int size = STRING_SIZE_SIZE; |
1424 | bfd_byte buffer[STRING_SIZE_SIZE]; | |
1425 | ||
1426 | #if STRING_SIZE_SIZE == 4 | |
dc810e39 | 1427 | H_PUT_32 (abfd, size, buffer); |
252b5132 | 1428 | #else |
dc810e39 | 1429 | #error Change H_PUT_32 |
252b5132 | 1430 | #endif |
c8e7bf0d | 1431 | if (bfd_bwrite ((void *) buffer, (bfd_size_type) STRING_SIZE_SIZE, abfd) |
252b5132 | 1432 | != STRING_SIZE_SIZE) |
b34976b6 | 1433 | return FALSE; |
252b5132 RH |
1434 | } |
1435 | ||
1436 | /* Make sure the .debug section was created to be the correct size. | |
1437 | We should create it ourselves on the fly, but we don't because | |
1438 | BFD won't let us write to any section until we know how large all | |
1439 | the sections are. We could still do it by making another pass | |
1440 | over the symbols. FIXME. */ | |
1441 | BFD_ASSERT (debug_string_size == 0 | |
1442 | || (debug_string_section != (asection *) NULL | |
1443 | && (BFD_ALIGN (debug_string_size, | |
1444 | 1 << debug_string_section->alignment_power) | |
eea6121a | 1445 | == debug_string_section->size))); |
252b5132 | 1446 | |
b34976b6 | 1447 | return TRUE; |
252b5132 RH |
1448 | } |
1449 | ||
b34976b6 | 1450 | bfd_boolean |
c8e7bf0d | 1451 | coff_write_linenumbers (bfd *abfd) |
252b5132 RH |
1452 | { |
1453 | asection *s; | |
1454 | bfd_size_type linesz; | |
c8e7bf0d | 1455 | void * buff; |
252b5132 RH |
1456 | |
1457 | linesz = bfd_coff_linesz (abfd); | |
1458 | buff = bfd_alloc (abfd, linesz); | |
1459 | if (!buff) | |
b34976b6 | 1460 | return FALSE; |
252b5132 RH |
1461 | for (s = abfd->sections; s != (asection *) NULL; s = s->next) |
1462 | { | |
1463 | if (s->lineno_count) | |
1464 | { | |
1465 | asymbol **q = abfd->outsymbols; | |
1466 | if (bfd_seek (abfd, s->line_filepos, SEEK_SET) != 0) | |
b34976b6 | 1467 | return FALSE; |
c8e7bf0d | 1468 | /* Find all the linenumbers in this section. */ |
252b5132 RH |
1469 | while (*q) |
1470 | { | |
1471 | asymbol *p = *q; | |
1472 | if (p->section->output_section == s) | |
1473 | { | |
1474 | alent *l = | |
1475 | BFD_SEND (bfd_asymbol_bfd (p), _get_lineno, | |
1476 | (bfd_asymbol_bfd (p), p)); | |
1477 | if (l) | |
1478 | { | |
c8e7bf0d | 1479 | /* Found a linenumber entry, output. */ |
252b5132 | 1480 | struct internal_lineno out; |
a5c71af8 | 1481 | |
c8e7bf0d | 1482 | memset ((void *) & out, 0, sizeof (out)); |
252b5132 RH |
1483 | out.l_lnno = 0; |
1484 | out.l_addr.l_symndx = l->u.offset; | |
1485 | bfd_coff_swap_lineno_out (abfd, &out, buff); | |
dc810e39 AM |
1486 | if (bfd_bwrite (buff, (bfd_size_type) linesz, abfd) |
1487 | != linesz) | |
b34976b6 | 1488 | return FALSE; |
252b5132 RH |
1489 | l++; |
1490 | while (l->line_number) | |
1491 | { | |
1492 | out.l_lnno = l->line_number; | |
1493 | out.l_addr.l_symndx = l->u.offset; | |
1494 | bfd_coff_swap_lineno_out (abfd, &out, buff); | |
dc810e39 AM |
1495 | if (bfd_bwrite (buff, (bfd_size_type) linesz, abfd) |
1496 | != linesz) | |
b34976b6 | 1497 | return FALSE; |
252b5132 RH |
1498 | l++; |
1499 | } | |
1500 | } | |
1501 | } | |
1502 | q++; | |
1503 | } | |
1504 | } | |
1505 | } | |
1506 | bfd_release (abfd, buff); | |
b34976b6 | 1507 | return TRUE; |
252b5132 RH |
1508 | } |
1509 | ||
252b5132 | 1510 | alent * |
c8e7bf0d | 1511 | coff_get_lineno (bfd *ignore_abfd ATTRIBUTE_UNUSED, asymbol *symbol) |
252b5132 RH |
1512 | { |
1513 | return coffsymbol (symbol)->lineno; | |
1514 | } | |
1515 | ||
252b5132 RH |
1516 | /* This function transforms the offsets into the symbol table into |
1517 | pointers to syments. */ | |
1518 | ||
1519 | static void | |
c8e7bf0d NC |
1520 | coff_pointerize_aux (bfd *abfd, |
1521 | combined_entry_type *table_base, | |
1522 | combined_entry_type *symbol, | |
1523 | unsigned int indaux, | |
334d4ced NC |
1524 | combined_entry_type *auxent, |
1525 | combined_entry_type *table_end) | |
252b5132 RH |
1526 | { |
1527 | unsigned int type = symbol->u.syment.n_type; | |
96d56e9f | 1528 | unsigned int n_sclass = symbol->u.syment.n_sclass; |
252b5132 | 1529 | |
a5c71af8 | 1530 | BFD_ASSERT (symbol->is_sym); |
252b5132 RH |
1531 | if (coff_backend_info (abfd)->_bfd_coff_pointerize_aux_hook) |
1532 | { | |
1533 | if ((*coff_backend_info (abfd)->_bfd_coff_pointerize_aux_hook) | |
1534 | (abfd, table_base, symbol, indaux, auxent)) | |
1535 | return; | |
1536 | } | |
1537 | ||
c8e7bf0d | 1538 | /* Don't bother if this is a file or a section. */ |
96d56e9f | 1539 | if (n_sclass == C_STAT && type == T_NULL) |
252b5132 | 1540 | return; |
96d56e9f | 1541 | if (n_sclass == C_FILE) |
252b5132 RH |
1542 | return; |
1543 | ||
a5c71af8 | 1544 | BFD_ASSERT (! auxent->is_sym); |
c8e7bf0d NC |
1545 | /* Otherwise patch up. */ |
1546 | #define N_TMASK coff_data (abfd)->local_n_tmask | |
252b5132 | 1547 | #define N_BTSHFT coff_data (abfd)->local_n_btshft |
68ffbac6 | 1548 | |
96d56e9f NC |
1549 | if ((ISFCN (type) || ISTAG (n_sclass) || n_sclass == C_BLOCK |
1550 | || n_sclass == C_FCN) | |
e9af4700 NC |
1551 | && auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l > 0 |
1552 | && auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l | |
334d4ced NC |
1553 | < (long) obj_raw_syment_count (abfd) |
1554 | && table_base + auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l | |
1555 | < table_end) | |
252b5132 RH |
1556 | { |
1557 | auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p = | |
1558 | table_base + auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l; | |
1559 | auxent->fix_end = 1; | |
1560 | } | |
334d4ced | 1561 | |
252b5132 RH |
1562 | /* A negative tagndx is meaningless, but the SCO 3.2v4 cc can |
1563 | generate one, so we must be careful to ignore it. */ | |
eb77f6a4 | 1564 | if ((unsigned long) auxent->u.auxent.x_sym.x_tagndx.l |
334d4ced NC |
1565 | < obj_raw_syment_count (abfd) |
1566 | && table_base + auxent->u.auxent.x_sym.x_tagndx.l < table_end) | |
252b5132 RH |
1567 | { |
1568 | auxent->u.auxent.x_sym.x_tagndx.p = | |
1569 | table_base + auxent->u.auxent.x_sym.x_tagndx.l; | |
1570 | auxent->fix_tag = 1; | |
1571 | } | |
1572 | } | |
1573 | ||
1574 | /* Allocate space for the ".debug" section, and read it. | |
1575 | We did not read the debug section until now, because | |
244148ad | 1576 | we didn't want to go to the trouble until someone needed it. */ |
252b5132 RH |
1577 | |
1578 | static char * | |
5a3f568b | 1579 | build_debug_section (bfd *abfd, asection ** sect_return) |
252b5132 RH |
1580 | { |
1581 | char *debug_section; | |
dc810e39 AM |
1582 | file_ptr position; |
1583 | bfd_size_type sec_size; | |
252b5132 RH |
1584 | |
1585 | asection *sect = bfd_get_section_by_name (abfd, ".debug"); | |
1586 | ||
1587 | if (!sect) | |
1588 | { | |
1589 | bfd_set_error (bfd_error_no_debug_section); | |
1590 | return NULL; | |
1591 | } | |
1592 | ||
eea6121a | 1593 | sec_size = sect->size; |
a50b1753 | 1594 | debug_section = (char *) bfd_alloc (abfd, sec_size); |
252b5132 RH |
1595 | if (debug_section == NULL) |
1596 | return NULL; | |
1597 | ||
244148ad | 1598 | /* Seek to the beginning of the `.debug' section and read it. |
252b5132 RH |
1599 | Save the current position first; it is needed by our caller. |
1600 | Then read debug section and reset the file pointer. */ | |
1601 | ||
1602 | position = bfd_tell (abfd); | |
1603 | if (bfd_seek (abfd, sect->filepos, SEEK_SET) != 0 | |
dc810e39 | 1604 | || bfd_bread (debug_section, sec_size, abfd) != sec_size |
252b5132 RH |
1605 | || bfd_seek (abfd, position, SEEK_SET) != 0) |
1606 | return NULL; | |
5a3f568b NC |
1607 | |
1608 | * sect_return = sect; | |
252b5132 RH |
1609 | return debug_section; |
1610 | } | |
1611 | ||
252b5132 RH |
1612 | /* Return a pointer to a malloc'd copy of 'name'. 'name' may not be |
1613 | \0-terminated, but will not exceed 'maxlen' characters. The copy *will* | |
1614 | be \0-terminated. */ | |
c8e7bf0d | 1615 | |
252b5132 | 1616 | static char * |
c8e7bf0d | 1617 | copy_name (bfd *abfd, char *name, size_t maxlen) |
252b5132 | 1618 | { |
dc810e39 | 1619 | size_t len; |
252b5132 RH |
1620 | char *newname; |
1621 | ||
1622 | for (len = 0; len < maxlen; ++len) | |
c8e7bf0d NC |
1623 | if (name[len] == '\0') |
1624 | break; | |
1625 | ||
a50b1753 | 1626 | if ((newname = (char *) bfd_alloc (abfd, (bfd_size_type) len + 1)) == NULL) |
c8e7bf0d | 1627 | return NULL; |
252b5132 | 1628 | |
252b5132 RH |
1629 | strncpy (newname, name, len); |
1630 | newname[len] = '\0'; | |
1631 | return newname; | |
1632 | } | |
1633 | ||
1634 | /* Read in the external symbols. */ | |
1635 | ||
b34976b6 | 1636 | bfd_boolean |
c8e7bf0d | 1637 | _bfd_coff_get_external_symbols (bfd *abfd) |
252b5132 RH |
1638 | { |
1639 | bfd_size_type symesz; | |
dc810e39 | 1640 | bfd_size_type size; |
c8e7bf0d | 1641 | void * syms; |
252b5132 RH |
1642 | |
1643 | if (obj_coff_external_syms (abfd) != NULL) | |
b34976b6 | 1644 | return TRUE; |
252b5132 RH |
1645 | |
1646 | symesz = bfd_coff_symesz (abfd); | |
1647 | ||
1648 | size = obj_raw_syment_count (abfd) * symesz; | |
353c5574 MS |
1649 | if (size == 0) |
1650 | return TRUE; | |
6cee8979 NC |
1651 | /* Check for integer overflow and for unreasonable symbol counts. */ |
1652 | if (size < obj_raw_syment_count (abfd) | |
1653 | || (bfd_get_file_size (abfd) > 0 | |
1654 | && size > bfd_get_file_size (abfd))) | |
07d6d2b8 | 1655 | |
6cee8979 | 1656 | { |
2dcf00ce AM |
1657 | _bfd_error_handler (_("%pB: corrupt symbol count: %#" PRIx64 ""), |
1658 | abfd, (uint64_t) obj_raw_syment_count (abfd)); | |
6cee8979 NC |
1659 | return FALSE; |
1660 | } | |
252b5132 | 1661 | |
c8e7bf0d | 1662 | syms = bfd_malloc (size); |
353c5574 | 1663 | if (syms == NULL) |
98f02962 NC |
1664 | { |
1665 | /* PR 21013: Provide an error message when the alloc fails. */ | |
2dcf00ce AM |
1666 | _bfd_error_handler (_("%pB: not enough memory to allocate space " |
1667 | "for %#" PRIx64 " symbols of size %#" PRIx64), | |
1668 | abfd, (uint64_t) obj_raw_syment_count (abfd), | |
1669 | (uint64_t) symesz); | |
98f02962 NC |
1670 | return FALSE; |
1671 | } | |
252b5132 RH |
1672 | |
1673 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0 | |
dc810e39 | 1674 | || bfd_bread (syms, size, abfd) != size) |
252b5132 RH |
1675 | { |
1676 | if (syms != NULL) | |
1677 | free (syms); | |
b34976b6 | 1678 | return FALSE; |
252b5132 RH |
1679 | } |
1680 | ||
1681 | obj_coff_external_syms (abfd) = syms; | |
b34976b6 | 1682 | return TRUE; |
252b5132 RH |
1683 | } |
1684 | ||
1685 | /* Read in the external strings. The strings are not loaded until | |
1686 | they are needed. This is because we have no simple way of | |
5a3f568b NC |
1687 | detecting a missing string table in an archive. If the strings |
1688 | are loaded then the STRINGS and STRINGS_LEN fields in the | |
1689 | coff_tdata structure will be set. */ | |
252b5132 RH |
1690 | |
1691 | const char * | |
c8e7bf0d | 1692 | _bfd_coff_read_string_table (bfd *abfd) |
252b5132 RH |
1693 | { |
1694 | char extstrsize[STRING_SIZE_SIZE]; | |
dc810e39 | 1695 | bfd_size_type strsize; |
252b5132 | 1696 | char *strings; |
dc810e39 | 1697 | file_ptr pos; |
252b5132 RH |
1698 | |
1699 | if (obj_coff_strings (abfd) != NULL) | |
1700 | return obj_coff_strings (abfd); | |
1701 | ||
1702 | if (obj_sym_filepos (abfd) == 0) | |
1703 | { | |
1704 | bfd_set_error (bfd_error_no_symbols); | |
1705 | return NULL; | |
1706 | } | |
1707 | ||
dc810e39 AM |
1708 | pos = obj_sym_filepos (abfd); |
1709 | pos += obj_raw_syment_count (abfd) * bfd_coff_symesz (abfd); | |
1710 | if (bfd_seek (abfd, pos, SEEK_SET) != 0) | |
252b5132 | 1711 | return NULL; |
244148ad | 1712 | |
dc810e39 AM |
1713 | if (bfd_bread (extstrsize, (bfd_size_type) sizeof extstrsize, abfd) |
1714 | != sizeof extstrsize) | |
252b5132 RH |
1715 | { |
1716 | if (bfd_get_error () != bfd_error_file_truncated) | |
1717 | return NULL; | |
1718 | ||
1719 | /* There is no string table. */ | |
1720 | strsize = STRING_SIZE_SIZE; | |
1721 | } | |
1722 | else | |
1723 | { | |
1724 | #if STRING_SIZE_SIZE == 4 | |
dc810e39 | 1725 | strsize = H_GET_32 (abfd, extstrsize); |
252b5132 | 1726 | #else |
dc810e39 | 1727 | #error Change H_GET_32 |
252b5132 RH |
1728 | #endif |
1729 | } | |
1730 | ||
b0029dce | 1731 | if (strsize < STRING_SIZE_SIZE || strsize > bfd_get_file_size (abfd)) |
252b5132 | 1732 | { |
4eca0228 | 1733 | _bfd_error_handler |
695344c0 | 1734 | /* xgettext: c-format */ |
2dcf00ce | 1735 | (_("%pB: bad string table size %" PRIu64), abfd, (uint64_t) strsize); |
252b5132 RH |
1736 | bfd_set_error (bfd_error_bad_value); |
1737 | return NULL; | |
1738 | } | |
07d6d2b8 | 1739 | |
36e9d67b | 1740 | strings = (char *) bfd_malloc (strsize + 1); |
cd11f78f AC |
1741 | if (strings == NULL) |
1742 | return NULL; | |
1743 | ||
36e9d67b NC |
1744 | /* PR 17521 file: 079-54929-0.004. |
1745 | A corrupt file could contain an index that points into the first | |
1746 | STRING_SIZE_SIZE bytes of the string table, so make sure that | |
1747 | they are zero. */ | |
1748 | memset (strings, 0, STRING_SIZE_SIZE); | |
1749 | ||
dc810e39 | 1750 | if (bfd_bread (strings + STRING_SIZE_SIZE, strsize - STRING_SIZE_SIZE, abfd) |
252b5132 RH |
1751 | != strsize - STRING_SIZE_SIZE) |
1752 | { | |
1753 | free (strings); | |
1754 | return NULL; | |
1755 | } | |
1756 | ||
1757 | obj_coff_strings (abfd) = strings; | |
5a3f568b | 1758 | obj_coff_strings_len (abfd) = strsize; |
36e9d67b NC |
1759 | /* Terminate the string table, just in case. */ |
1760 | strings[strsize] = 0; | |
252b5132 RH |
1761 | return strings; |
1762 | } | |
1763 | ||
1764 | /* Free up the external symbols and strings read from a COFF file. */ | |
1765 | ||
b34976b6 | 1766 | bfd_boolean |
c8e7bf0d | 1767 | _bfd_coff_free_symbols (bfd *abfd) |
252b5132 | 1768 | { |
ee357486 NC |
1769 | if (! bfd_family_coff (abfd)) |
1770 | return FALSE; | |
1771 | ||
252b5132 RH |
1772 | if (obj_coff_external_syms (abfd) != NULL |
1773 | && ! obj_coff_keep_syms (abfd)) | |
1774 | { | |
1775 | free (obj_coff_external_syms (abfd)); | |
1776 | obj_coff_external_syms (abfd) = NULL; | |
1777 | } | |
ee357486 | 1778 | |
252b5132 RH |
1779 | if (obj_coff_strings (abfd) != NULL |
1780 | && ! obj_coff_keep_strings (abfd)) | |
1781 | { | |
1782 | free (obj_coff_strings (abfd)); | |
1783 | obj_coff_strings (abfd) = NULL; | |
5a3f568b | 1784 | obj_coff_strings_len (abfd) = 0; |
252b5132 | 1785 | } |
ee357486 | 1786 | |
b34976b6 | 1787 | return TRUE; |
252b5132 RH |
1788 | } |
1789 | ||
1790 | /* Read a symbol table into freshly bfd_allocated memory, swap it, and | |
1791 | knit the symbol names into a normalized form. By normalized here I | |
1792 | mean that all symbols have an n_offset pointer that points to a null- | |
1793 | terminated string. */ | |
1794 | ||
1795 | combined_entry_type * | |
c8e7bf0d | 1796 | coff_get_normalized_symtab (bfd *abfd) |
252b5132 RH |
1797 | { |
1798 | combined_entry_type *internal; | |
1799 | combined_entry_type *internal_ptr; | |
1800 | combined_entry_type *symbol_ptr; | |
1801 | combined_entry_type *internal_end; | |
dc810e39 | 1802 | size_t symesz; |
252b5132 RH |
1803 | char *raw_src; |
1804 | char *raw_end; | |
1805 | const char *string_table = NULL; | |
5a3f568b NC |
1806 | asection * debug_sec = NULL; |
1807 | char *debug_sec_data = NULL; | |
dc810e39 | 1808 | bfd_size_type size; |
252b5132 RH |
1809 | |
1810 | if (obj_raw_syments (abfd) != NULL) | |
1811 | return obj_raw_syments (abfd); | |
1812 | ||
201159ec NC |
1813 | if (! _bfd_coff_get_external_symbols (abfd)) |
1814 | return NULL; | |
1815 | ||
40572405 | 1816 | size = obj_raw_syment_count (abfd) * sizeof (combined_entry_type); |
6cee8979 NC |
1817 | /* Check for integer overflow. */ |
1818 | if (size < obj_raw_syment_count (abfd)) | |
1819 | return NULL; | |
a50b1753 | 1820 | internal = (combined_entry_type *) bfd_zalloc (abfd, size); |
252b5132 RH |
1821 | if (internal == NULL && size != 0) |
1822 | return NULL; | |
1823 | internal_end = internal + obj_raw_syment_count (abfd); | |
1b786873 | 1824 | |
252b5132 RH |
1825 | raw_src = (char *) obj_coff_external_syms (abfd); |
1826 | ||
c8e7bf0d | 1827 | /* Mark the end of the symbols. */ |
252b5132 RH |
1828 | symesz = bfd_coff_symesz (abfd); |
1829 | raw_end = (char *) raw_src + obj_raw_syment_count (abfd) * symesz; | |
1830 | ||
1831 | /* FIXME SOMEDAY. A string table size of zero is very weird, but | |
1832 | probably possible. If one shows up, it will probably kill us. */ | |
1833 | ||
c8e7bf0d | 1834 | /* Swap all the raw entries. */ |
252b5132 RH |
1835 | for (internal_ptr = internal; |
1836 | raw_src < raw_end; | |
1837 | raw_src += symesz, internal_ptr++) | |
1838 | { | |
252b5132 | 1839 | unsigned int i; |
7e760b06 | 1840 | |
c8e7bf0d NC |
1841 | bfd_coff_swap_sym_in (abfd, (void *) raw_src, |
1842 | (void *) & internal_ptr->u.syment); | |
252b5132 | 1843 | symbol_ptr = internal_ptr; |
a5c71af8 | 1844 | internal_ptr->is_sym = TRUE; |
252b5132 | 1845 | |
0a9d414a NC |
1846 | /* PR 17512: file: 1353-1166-0.004. */ |
1847 | if (symbol_ptr->u.syment.n_sclass == C_FILE | |
1848 | && symbol_ptr->u.syment.n_numaux > 0 | |
1849 | && raw_src + symesz + symbol_ptr->u.syment.n_numaux | |
fc42baf3 | 1850 | * symesz > raw_end) |
0a9d414a NC |
1851 | { |
1852 | bfd_release (abfd, internal); | |
1853 | return NULL; | |
1854 | } | |
1855 | ||
252b5132 RH |
1856 | for (i = 0; |
1857 | i < symbol_ptr->u.syment.n_numaux; | |
1858 | i++) | |
1859 | { | |
1860 | internal_ptr++; | |
7e760b06 NC |
1861 | /* PR 17512: Prevent buffer overrun. */ |
1862 | if (internal_ptr >= internal_end) | |
0a9d414a NC |
1863 | { |
1864 | bfd_release (abfd, internal); | |
1865 | return NULL; | |
1866 | } | |
7e760b06 | 1867 | |
252b5132 | 1868 | raw_src += symesz; |
c8e7bf0d | 1869 | bfd_coff_swap_aux_in (abfd, (void *) raw_src, |
252b5132 RH |
1870 | symbol_ptr->u.syment.n_type, |
1871 | symbol_ptr->u.syment.n_sclass, | |
dc810e39 | 1872 | (int) i, symbol_ptr->u.syment.n_numaux, |
252b5132 | 1873 | &(internal_ptr->u.auxent)); |
0a9d414a | 1874 | |
a5c71af8 | 1875 | internal_ptr->is_sym = FALSE; |
252b5132 | 1876 | coff_pointerize_aux (abfd, internal, symbol_ptr, i, |
334d4ced | 1877 | internal_ptr, internal_end); |
252b5132 RH |
1878 | } |
1879 | } | |
1880 | ||
1881 | /* Free the raw symbols, but not the strings (if we have them). */ | |
b34976b6 | 1882 | obj_coff_keep_strings (abfd) = TRUE; |
252b5132 RH |
1883 | if (! _bfd_coff_free_symbols (abfd)) |
1884 | return NULL; | |
1885 | ||
1886 | for (internal_ptr = internal; internal_ptr < internal_end; | |
1887 | internal_ptr++) | |
1888 | { | |
a5c71af8 NC |
1889 | BFD_ASSERT (internal_ptr->is_sym); |
1890 | ||
252b5132 RH |
1891 | if (internal_ptr->u.syment.n_sclass == C_FILE |
1892 | && internal_ptr->u.syment.n_numaux > 0) | |
1893 | { | |
a5c71af8 NC |
1894 | combined_entry_type * aux = internal_ptr + 1; |
1895 | ||
c8e7bf0d NC |
1896 | /* Make a file symbol point to the name in the auxent, since |
1897 | the text ".file" is redundant. */ | |
a5c71af8 NC |
1898 | BFD_ASSERT (! aux->is_sym); |
1899 | ||
1900 | if (aux->u.auxent.x_file.x_n.x_zeroes == 0) | |
252b5132 | 1901 | { |
c8e7bf0d | 1902 | /* The filename is a long one, point into the string table. */ |
252b5132 RH |
1903 | if (string_table == NULL) |
1904 | { | |
1905 | string_table = _bfd_coff_read_string_table (abfd); | |
1906 | if (string_table == NULL) | |
1907 | return NULL; | |
1908 | } | |
a5c71af8 NC |
1909 | |
1910 | if ((bfd_size_type)(aux->u.auxent.x_file.x_n.x_offset) | |
5a3f568b NC |
1911 | >= obj_coff_strings_len (abfd)) |
1912 | internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) _("<corrupt>"); | |
1913 | else | |
1914 | internal_ptr->u.syment._n._n_n._n_offset = | |
a5c71af8 | 1915 | (bfd_hostptr_t) (string_table + (aux->u.auxent.x_file.x_n.x_offset)); |
252b5132 RH |
1916 | } |
1917 | else | |
1918 | { | |
7bb9db4d | 1919 | /* Ordinary short filename, put into memory anyway. The |
07d6d2b8 AM |
1920 | Microsoft PE tools sometimes store a filename in |
1921 | multiple AUX entries. */ | |
ec0ef80e DD |
1922 | if (internal_ptr->u.syment.n_numaux > 1 |
1923 | && coff_data (abfd)->pe) | |
c8e7bf0d | 1924 | internal_ptr->u.syment._n._n_n._n_offset = |
a5c71af8 NC |
1925 | (bfd_hostptr_t) |
1926 | copy_name (abfd, | |
1927 | aux->u.auxent.x_file.x_fname, | |
1928 | internal_ptr->u.syment.n_numaux * symesz); | |
ec0ef80e | 1929 | else |
c8e7bf0d | 1930 | internal_ptr->u.syment._n._n_n._n_offset = |
d2df793a | 1931 | ((bfd_hostptr_t) |
c8e7bf0d | 1932 | copy_name (abfd, |
a5c71af8 | 1933 | aux->u.auxent.x_file.x_fname, |
c8e7bf0d | 1934 | (size_t) bfd_coff_filnmlen (abfd))); |
252b5132 RH |
1935 | } |
1936 | } | |
1937 | else | |
1938 | { | |
1939 | if (internal_ptr->u.syment._n._n_n._n_zeroes != 0) | |
1940 | { | |
1941 | /* This is a "short" name. Make it long. */ | |
dc810e39 AM |
1942 | size_t i; |
1943 | char *newstring; | |
252b5132 | 1944 | |
c8e7bf0d | 1945 | /* Find the length of this string without walking into memory |
07d6d2b8 | 1946 | that isn't ours. */ |
252b5132 | 1947 | for (i = 0; i < 8; ++i) |
dc810e39 AM |
1948 | if (internal_ptr->u.syment._n._n_name[i] == '\0') |
1949 | break; | |
252b5132 | 1950 | |
a50b1753 | 1951 | newstring = (char *) bfd_zalloc (abfd, (bfd_size_type) (i + 1)); |
dc810e39 | 1952 | if (newstring == NULL) |
c8e7bf0d | 1953 | return NULL; |
dc810e39 | 1954 | strncpy (newstring, internal_ptr->u.syment._n._n_name, i); |
d2df793a | 1955 | internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) newstring; |
252b5132 RH |
1956 | internal_ptr->u.syment._n._n_n._n_zeroes = 0; |
1957 | } | |
1958 | else if (internal_ptr->u.syment._n._n_n._n_offset == 0) | |
649aeae3 | 1959 | internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) ""; |
252b5132 RH |
1960 | else if (!bfd_coff_symname_in_debug (abfd, &internal_ptr->u.syment)) |
1961 | { | |
1962 | /* Long name already. Point symbol at the string in the | |
07d6d2b8 | 1963 | table. */ |
252b5132 RH |
1964 | if (string_table == NULL) |
1965 | { | |
1966 | string_table = _bfd_coff_read_string_table (abfd); | |
1967 | if (string_table == NULL) | |
1968 | return NULL; | |
1969 | } | |
36e9d67b NC |
1970 | if (internal_ptr->u.syment._n._n_n._n_offset >= obj_coff_strings_len (abfd) |
1971 | || string_table + internal_ptr->u.syment._n._n_n._n_offset < string_table) | |
5a3f568b NC |
1972 | internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) _("<corrupt>"); |
1973 | else | |
1974 | internal_ptr->u.syment._n._n_n._n_offset = | |
1975 | ((bfd_hostptr_t) | |
1976 | (string_table | |
1977 | + internal_ptr->u.syment._n._n_n._n_offset)); | |
252b5132 RH |
1978 | } |
1979 | else | |
1980 | { | |
1981 | /* Long name in debug section. Very similar. */ | |
5a3f568b NC |
1982 | if (debug_sec_data == NULL) |
1983 | debug_sec_data = build_debug_section (abfd, & debug_sec); | |
1984 | if (debug_sec_data != NULL) | |
1985 | { | |
1986 | BFD_ASSERT (debug_sec != NULL); | |
1987 | /* PR binutils/17512: Catch out of range offsets into the debug data. */ | |
36e9d67b NC |
1988 | if (internal_ptr->u.syment._n._n_n._n_offset > debug_sec->size |
1989 | || debug_sec_data + internal_ptr->u.syment._n._n_n._n_offset < debug_sec_data) | |
5a3f568b NC |
1990 | internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) _("<corrupt>"); |
1991 | else | |
1992 | internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) | |
1993 | (debug_sec_data + internal_ptr->u.syment._n._n_n._n_offset); | |
1994 | } | |
1995 | else | |
1996 | internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) ""; | |
252b5132 RH |
1997 | } |
1998 | } | |
1999 | internal_ptr += internal_ptr->u.syment.n_numaux; | |
2000 | } | |
2001 | ||
2002 | obj_raw_syments (abfd) = internal; | |
2003 | BFD_ASSERT (obj_raw_syment_count (abfd) | |
2004 | == (unsigned int) (internal_ptr - internal)); | |
2005 | ||
c8e7bf0d NC |
2006 | return internal; |
2007 | } | |
252b5132 RH |
2008 | |
2009 | long | |
c8e7bf0d | 2010 | coff_get_reloc_upper_bound (bfd *abfd, sec_ptr asect) |
252b5132 RH |
2011 | { |
2012 | if (bfd_get_format (abfd) != bfd_object) | |
2013 | { | |
2014 | bfd_set_error (bfd_error_invalid_operation); | |
2015 | return -1; | |
2016 | } | |
2017 | return (asect->reloc_count + 1) * sizeof (arelent *); | |
2018 | } | |
2019 | ||
2020 | asymbol * | |
c8e7bf0d | 2021 | coff_make_empty_symbol (bfd *abfd) |
252b5132 | 2022 | { |
dc810e39 | 2023 | bfd_size_type amt = sizeof (coff_symbol_type); |
d3ce72d0 | 2024 | coff_symbol_type *new_symbol = (coff_symbol_type *) bfd_zalloc (abfd, amt); |
c8e7bf0d | 2025 | |
d3ce72d0 | 2026 | if (new_symbol == NULL) |
c8e7bf0d | 2027 | return NULL; |
d3ce72d0 | 2028 | new_symbol->symbol.section = 0; |
a5c71af8 | 2029 | new_symbol->native = NULL; |
d3ce72d0 NC |
2030 | new_symbol->lineno = NULL; |
2031 | new_symbol->done_lineno = FALSE; | |
2032 | new_symbol->symbol.the_bfd = abfd; | |
c8e7bf0d | 2033 | |
d3ce72d0 | 2034 | return & new_symbol->symbol; |
252b5132 RH |
2035 | } |
2036 | ||
2037 | /* Make a debugging symbol. */ | |
2038 | ||
2039 | asymbol * | |
c8e7bf0d NC |
2040 | coff_bfd_make_debug_symbol (bfd *abfd, |
2041 | void * ptr ATTRIBUTE_UNUSED, | |
2042 | unsigned long sz ATTRIBUTE_UNUSED) | |
252b5132 | 2043 | { |
dc810e39 | 2044 | bfd_size_type amt = sizeof (coff_symbol_type); |
d3ce72d0 | 2045 | coff_symbol_type *new_symbol = (coff_symbol_type *) bfd_alloc (abfd, amt); |
c8e7bf0d | 2046 | |
d3ce72d0 | 2047 | if (new_symbol == NULL) |
c8e7bf0d | 2048 | return NULL; |
252b5132 RH |
2049 | /* @@ The 10 is a guess at a plausible maximum number of aux entries |
2050 | (but shouldn't be a constant). */ | |
dc810e39 | 2051 | amt = sizeof (combined_entry_type) * 10; |
d3ce72d0 NC |
2052 | new_symbol->native = (combined_entry_type *) bfd_zalloc (abfd, amt); |
2053 | if (!new_symbol->native) | |
c8e7bf0d | 2054 | return NULL; |
a5c71af8 | 2055 | new_symbol->native->is_sym = TRUE; |
d3ce72d0 NC |
2056 | new_symbol->symbol.section = bfd_abs_section_ptr; |
2057 | new_symbol->symbol.flags = BSF_DEBUGGING; | |
2058 | new_symbol->lineno = NULL; | |
2059 | new_symbol->done_lineno = FALSE; | |
2060 | new_symbol->symbol.the_bfd = abfd; | |
68ffbac6 | 2061 | |
d3ce72d0 | 2062 | return & new_symbol->symbol; |
252b5132 RH |
2063 | } |
2064 | ||
252b5132 | 2065 | void |
c8e7bf0d | 2066 | coff_get_symbol_info (bfd *abfd, asymbol *symbol, symbol_info *ret) |
252b5132 RH |
2067 | { |
2068 | bfd_symbol_info (symbol, ret); | |
c8e7bf0d | 2069 | |
252b5132 | 2070 | if (coffsymbol (symbol)->native != NULL |
a5c71af8 NC |
2071 | && coffsymbol (symbol)->native->fix_value |
2072 | && coffsymbol (symbol)->native->is_sym) | |
c8e7bf0d | 2073 | ret->value = coffsymbol (symbol)->native->u.syment.n_value - |
d2df793a | 2074 | (bfd_hostptr_t) obj_raw_syments (abfd); |
252b5132 RH |
2075 | } |
2076 | ||
252b5132 RH |
2077 | /* Print out information about COFF symbol. */ |
2078 | ||
2079 | void | |
c8e7bf0d NC |
2080 | coff_print_symbol (bfd *abfd, |
2081 | void * filep, | |
2082 | asymbol *symbol, | |
2083 | bfd_print_symbol_type how) | |
252b5132 | 2084 | { |
c8e7bf0d | 2085 | FILE * file = (FILE *) filep; |
252b5132 RH |
2086 | |
2087 | switch (how) | |
2088 | { | |
2089 | case bfd_print_symbol_name: | |
2090 | fprintf (file, "%s", symbol->name); | |
2091 | break; | |
2092 | ||
2093 | case bfd_print_symbol_more: | |
2094 | fprintf (file, "coff %s %s", | |
2095 | coffsymbol (symbol)->native ? "n" : "g", | |
2096 | coffsymbol (symbol)->lineno ? "l" : " "); | |
2097 | break; | |
2098 | ||
2099 | case bfd_print_symbol_all: | |
2100 | if (coffsymbol (symbol)->native) | |
2101 | { | |
beb1bf64 | 2102 | bfd_vma val; |
252b5132 RH |
2103 | unsigned int aux; |
2104 | combined_entry_type *combined = coffsymbol (symbol)->native; | |
2105 | combined_entry_type *root = obj_raw_syments (abfd); | |
2106 | struct lineno_cache_entry *l = coffsymbol (symbol)->lineno; | |
2107 | ||
2108 | fprintf (file, "[%3ld]", (long) (combined - root)); | |
2109 | ||
f41e4712 NC |
2110 | /* PR 17512: file: 079-33786-0.001:0.1. */ |
2111 | if (combined < obj_raw_syments (abfd) | |
2112 | || combined >= obj_raw_syments (abfd) + obj_raw_syment_count (abfd)) | |
2113 | { | |
2114 | fprintf (file, _("<corrupt info> %s"), symbol->name); | |
2115 | break; | |
2116 | } | |
2117 | ||
a5c71af8 | 2118 | BFD_ASSERT (combined->is_sym); |
252b5132 | 2119 | if (! combined->fix_value) |
beb1bf64 | 2120 | val = (bfd_vma) combined->u.syment.n_value; |
252b5132 | 2121 | else |
d2df793a | 2122 | val = combined->u.syment.n_value - (bfd_hostptr_t) root; |
252b5132 | 2123 | |
7920ce38 | 2124 | fprintf (file, "(sec %2d)(fl 0x%02x)(ty %3x)(scl %3d) (nx %d) 0x", |
252b5132 RH |
2125 | combined->u.syment.n_scnum, |
2126 | combined->u.syment.n_flags, | |
2127 | combined->u.syment.n_type, | |
2128 | combined->u.syment.n_sclass, | |
745c12f8 | 2129 | combined->u.syment.n_numaux); |
ebf12fbe | 2130 | bfd_fprintf_vma (abfd, file, val); |
745c12f8 | 2131 | fprintf (file, " %s", symbol->name); |
252b5132 RH |
2132 | |
2133 | for (aux = 0; aux < combined->u.syment.n_numaux; aux++) | |
2134 | { | |
2135 | combined_entry_type *auxp = combined + aux + 1; | |
2136 | long tagndx; | |
2137 | ||
a5c71af8 | 2138 | BFD_ASSERT (! auxp->is_sym); |
252b5132 RH |
2139 | if (auxp->fix_tag) |
2140 | tagndx = auxp->u.auxent.x_sym.x_tagndx.p - root; | |
2141 | else | |
2142 | tagndx = auxp->u.auxent.x_sym.x_tagndx.l; | |
2143 | ||
2144 | fprintf (file, "\n"); | |
2145 | ||
2146 | if (bfd_coff_print_aux (abfd, file, root, combined, auxp, aux)) | |
2147 | continue; | |
2148 | ||
2149 | switch (combined->u.syment.n_sclass) | |
2150 | { | |
2151 | case C_FILE: | |
2152 | fprintf (file, "File "); | |
2153 | break; | |
2154 | ||
2155 | case C_STAT: | |
2156 | if (combined->u.syment.n_type == T_NULL) | |
c8e7bf0d | 2157 | /* Probably a section symbol ? */ |
252b5132 RH |
2158 | { |
2159 | fprintf (file, "AUX scnlen 0x%lx nreloc %d nlnno %d", | |
0af1713e | 2160 | (unsigned long) auxp->u.auxent.x_scn.x_scnlen, |
252b5132 RH |
2161 | auxp->u.auxent.x_scn.x_nreloc, |
2162 | auxp->u.auxent.x_scn.x_nlinno); | |
2163 | if (auxp->u.auxent.x_scn.x_checksum != 0 | |
2164 | || auxp->u.auxent.x_scn.x_associated != 0 | |
2165 | || auxp->u.auxent.x_scn.x_comdat != 0) | |
2166 | fprintf (file, " checksum 0x%lx assoc %d comdat %d", | |
2167 | auxp->u.auxent.x_scn.x_checksum, | |
2168 | auxp->u.auxent.x_scn.x_associated, | |
2169 | auxp->u.auxent.x_scn.x_comdat); | |
2170 | break; | |
2171 | } | |
1a0670f3 | 2172 | /* Fall through. */ |
312191a6 | 2173 | case C_EXT: |
8602d4fe | 2174 | case C_AIX_WEAKEXT: |
312191a6 ILT |
2175 | if (ISFCN (combined->u.syment.n_type)) |
2176 | { | |
cea4409c AM |
2177 | long next, llnos; |
2178 | ||
2179 | if (auxp->fix_end) | |
2180 | next = (auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p | |
2181 | - root); | |
2182 | else | |
2183 | next = auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l; | |
2184 | llnos = auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
312191a6 | 2185 | fprintf (file, |
3d66c4f7 | 2186 | "AUX tagndx %ld ttlsiz 0x%lx lnnos %ld next %ld", |
0af1713e AM |
2187 | tagndx, |
2188 | (unsigned long) auxp->u.auxent.x_sym.x_misc.x_fsize, | |
cea4409c | 2189 | llnos, next); |
312191a6 ILT |
2190 | break; |
2191 | } | |
1a0670f3 | 2192 | /* Fall through. */ |
252b5132 RH |
2193 | default: |
2194 | fprintf (file, "AUX lnno %d size 0x%x tagndx %ld", | |
2195 | auxp->u.auxent.x_sym.x_misc.x_lnsz.x_lnno, | |
2196 | auxp->u.auxent.x_sym.x_misc.x_lnsz.x_size, | |
2197 | tagndx); | |
2198 | if (auxp->fix_end) | |
2199 | fprintf (file, " endndx %ld", | |
2200 | ((long) | |
2201 | (auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p | |
2202 | - root))); | |
2203 | break; | |
2204 | } | |
2205 | } | |
2206 | ||
2207 | if (l) | |
2208 | { | |
2209 | fprintf (file, "\n%s :", l->u.sym->name); | |
2210 | l++; | |
2211 | while (l->line_number) | |
2212 | { | |
f41e4712 NC |
2213 | if (l->line_number > 0) |
2214 | { | |
2215 | fprintf (file, "\n%4d : ", l->line_number); | |
2216 | bfd_fprintf_vma (abfd, file, l->u.offset + symbol->section->vma); | |
2217 | } | |
252b5132 RH |
2218 | l++; |
2219 | } | |
2220 | } | |
2221 | } | |
2222 | else | |
2223 | { | |
c8e7bf0d | 2224 | bfd_print_symbol_vandf (abfd, (void *) file, symbol); |
252b5132 RH |
2225 | fprintf (file, " %-5s %s %s %s", |
2226 | symbol->section->name, | |
2227 | coffsymbol (symbol)->native ? "n" : "g", | |
2228 | coffsymbol (symbol)->lineno ? "l" : " ", | |
2229 | symbol->name); | |
2230 | } | |
2231 | } | |
2232 | } | |
2233 | ||
2234 | /* Return whether a symbol name implies a local symbol. In COFF, | |
2235 | local symbols generally start with ``.L''. Most targets use this | |
2236 | function for the is_local_label_name entry point, but some may | |
2237 | override it. */ | |
2238 | ||
b34976b6 | 2239 | bfd_boolean |
c8e7bf0d NC |
2240 | _bfd_coff_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, |
2241 | const char *name) | |
252b5132 | 2242 | { |
b34976b6 | 2243 | return name[0] == '.' && name[1] == 'L'; |
252b5132 RH |
2244 | } |
2245 | ||
9a968f43 NC |
2246 | /* Provided a BFD, a section and an offset (in bytes, not octets) into the |
2247 | section, calculate and return the name of the source file and the line | |
2248 | nearest to the wanted location. */ | |
435b1e90 | 2249 | |
b34976b6 | 2250 | bfd_boolean |
fc28f9aa | 2251 | coff_find_nearest_line_with_names (bfd *abfd, |
07d6d2b8 AM |
2252 | asymbol **symbols, |
2253 | asection *section, | |
2254 | bfd_vma offset, | |
2255 | const char **filename_ptr, | |
2256 | const char **functionname_ptr, | |
2257 | unsigned int *line_ptr, | |
2258 | const struct dwarf_debug_section *debug_sections) | |
252b5132 | 2259 | { |
b34976b6 | 2260 | bfd_boolean found; |
252b5132 RH |
2261 | unsigned int i; |
2262 | unsigned int line_base; | |
2263 | coff_data_type *cof = coff_data (abfd); | |
c8e7bf0d | 2264 | /* Run through the raw syments if available. */ |
252b5132 RH |
2265 | combined_entry_type *p; |
2266 | combined_entry_type *pend; | |
2267 | alent *l; | |
2268 | struct coff_section_tdata *sec_data; | |
dc810e39 | 2269 | bfd_size_type amt; |
252b5132 RH |
2270 | |
2271 | /* Before looking through the symbol table, try to use a .stab | |
2272 | section to find the information. */ | |
2273 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
2274 | &found, filename_ptr, | |
2275 | functionname_ptr, line_ptr, | |
51db3708 | 2276 | &coff_data(abfd)->line_info)) |
b34976b6 | 2277 | return FALSE; |
51db3708 | 2278 | |
4ca29a6a | 2279 | if (found) |
b34976b6 | 2280 | return TRUE; |
4ca29a6a | 2281 | |
51db3708 | 2282 | /* Also try examining DWARF2 debugging information. */ |
fb167eb2 | 2283 | if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset, |
51db3708 | 2284 | filename_ptr, functionname_ptr, |
fb167eb2 | 2285 | line_ptr, NULL, debug_sections, 0, |
51db3708 | 2286 | &coff_data(abfd)->dwarf2_find_line_info)) |
b34976b6 | 2287 | return TRUE; |
51db3708 | 2288 | |
e643cb45 NC |
2289 | sec_data = coff_section_data (abfd, section); |
2290 | ||
425bd9e1 NC |
2291 | /* If the DWARF lookup failed, but there is DWARF information available |
2292 | then the problem might be that the file has been rebased. This tool | |
2293 | changes the VMAs of all the sections, but it does not update the DWARF | |
2294 | information. So try again, using a bias against the address sought. */ | |
2295 | if (coff_data (abfd)->dwarf2_find_line_info != NULL) | |
2296 | { | |
219d6836 | 2297 | bfd_signed_vma bias = 0; |
425bd9e1 | 2298 | |
e643cb45 NC |
2299 | /* Create a cache of the result for the next call. */ |
2300 | if (sec_data == NULL && section->owner == abfd) | |
2301 | { | |
2302 | amt = sizeof (struct coff_section_tdata); | |
2303 | section->used_by_bfd = bfd_zalloc (abfd, amt); | |
2304 | sec_data = (struct coff_section_tdata *) section->used_by_bfd; | |
2305 | } | |
2306 | ||
2307 | if (sec_data != NULL && sec_data->saved_bias) | |
2308 | bias = sec_data->saved_bias; | |
219d6836 | 2309 | else if (symbols) |
e643cb45 NC |
2310 | { |
2311 | bias = _bfd_dwarf2_find_symbol_bias (symbols, | |
2312 | & coff_data (abfd)->dwarf2_find_line_info); | |
219d6836 | 2313 | |
e643cb45 NC |
2314 | if (sec_data) |
2315 | { | |
2316 | sec_data->saved_bias = TRUE; | |
2317 | sec_data->bias = bias; | |
2318 | } | |
2319 | } | |
1b786873 | 2320 | |
425bd9e1 NC |
2321 | if (bias |
2322 | && _bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, | |
2323 | offset + bias, | |
2324 | filename_ptr, functionname_ptr, | |
2325 | line_ptr, NULL, debug_sections, 0, | |
2326 | &coff_data(abfd)->dwarf2_find_line_info)) | |
2327 | return TRUE; | |
2328 | } | |
2329 | ||
252b5132 RH |
2330 | *filename_ptr = 0; |
2331 | *functionname_ptr = 0; | |
2332 | *line_ptr = 0; | |
2333 | ||
c8e7bf0d | 2334 | /* Don't try and find line numbers in a non coff file. */ |
9bd09e22 | 2335 | if (!bfd_family_coff (abfd)) |
b34976b6 | 2336 | return FALSE; |
252b5132 RH |
2337 | |
2338 | if (cof == NULL) | |
b34976b6 | 2339 | return FALSE; |
252b5132 RH |
2340 | |
2341 | /* Find the first C_FILE symbol. */ | |
2342 | p = cof->raw_syments; | |
2343 | if (!p) | |
b34976b6 | 2344 | return FALSE; |
252b5132 RH |
2345 | |
2346 | pend = p + cof->raw_syment_count; | |
2347 | while (p < pend) | |
2348 | { | |
a5c71af8 | 2349 | BFD_ASSERT (p->is_sym); |
252b5132 RH |
2350 | if (p->u.syment.n_sclass == C_FILE) |
2351 | break; | |
2352 | p += 1 + p->u.syment.n_numaux; | |
2353 | } | |
2354 | ||
2355 | if (p < pend) | |
2356 | { | |
2357 | bfd_vma sec_vma; | |
2358 | bfd_vma maxdiff; | |
2359 | ||
2360 | /* Look through the C_FILE symbols to find the best one. */ | |
2361 | sec_vma = bfd_get_section_vma (abfd, section); | |
2362 | *filename_ptr = (char *) p->u.syment._n._n_n._n_offset; | |
2363 | maxdiff = (bfd_vma) 0 - (bfd_vma) 1; | |
2364 | while (1) | |
2365 | { | |
4d9e2b27 | 2366 | bfd_vma file_addr; |
252b5132 RH |
2367 | combined_entry_type *p2; |
2368 | ||
2369 | for (p2 = p + 1 + p->u.syment.n_numaux; | |
2370 | p2 < pend; | |
2371 | p2 += 1 + p2->u.syment.n_numaux) | |
2372 | { | |
a5c71af8 | 2373 | BFD_ASSERT (p2->is_sym); |
252b5132 RH |
2374 | if (p2->u.syment.n_scnum > 0 |
2375 | && (section | |
2376 | == coff_section_from_bfd_index (abfd, | |
2377 | p2->u.syment.n_scnum))) | |
2378 | break; | |
2379 | if (p2->u.syment.n_sclass == C_FILE) | |
2380 | { | |
2381 | p2 = pend; | |
2382 | break; | |
2383 | } | |
2384 | } | |
a5c71af8 NC |
2385 | if (p2 >= pend) |
2386 | break; | |
252b5132 | 2387 | |
4d9e2b27 NC |
2388 | file_addr = (bfd_vma) p2->u.syment.n_value; |
2389 | /* PR 11512: Include the section address of the function name symbol. */ | |
2390 | if (p2->u.syment.n_scnum > 0) | |
2391 | file_addr += coff_section_from_bfd_index (abfd, | |
2392 | p2->u.syment.n_scnum)->vma; | |
798c1fb8 | 2393 | /* We use <= MAXDIFF here so that if we get a zero length |
07d6d2b8 | 2394 | file, we actually use the next file entry. */ |
252b5132 | 2395 | if (p2 < pend |
4d9e2b27 NC |
2396 | && offset + sec_vma >= file_addr |
2397 | && offset + sec_vma - file_addr <= maxdiff) | |
252b5132 RH |
2398 | { |
2399 | *filename_ptr = (char *) p->u.syment._n._n_n._n_offset; | |
2400 | maxdiff = offset + sec_vma - p2->u.syment.n_value; | |
2401 | } | |
2402 | ||
2403 | /* Avoid endless loops on erroneous files by ensuring that | |
2404 | we always move forward in the file. */ | |
cea4409c | 2405 | if (p >= cof->raw_syments + p->u.syment.n_value) |
252b5132 RH |
2406 | break; |
2407 | ||
2408 | p = cof->raw_syments + p->u.syment.n_value; | |
2409 | if (p > pend || p->u.syment.n_sclass != C_FILE) | |
2410 | break; | |
2411 | } | |
2412 | } | |
2413 | ||
e643cb45 NC |
2414 | if (section->lineno_count == 0) |
2415 | { | |
2416 | *functionname_ptr = NULL; | |
2417 | *line_ptr = 0; | |
2418 | return TRUE; | |
2419 | } | |
2420 | ||
2421 | /* Now wander though the raw linenumbers of the section. | |
2422 | If we have been called on this section before, and the offset | |
2423 | we want is further down then we can prime the lookup loop. */ | |
252b5132 RH |
2424 | if (sec_data != NULL |
2425 | && sec_data->i > 0 | |
2426 | && offset >= sec_data->offset) | |
2427 | { | |
2428 | i = sec_data->i; | |
2429 | *functionname_ptr = sec_data->function; | |
2430 | line_base = sec_data->line_base; | |
2431 | } | |
2432 | else | |
2433 | { | |
2434 | i = 0; | |
2435 | line_base = 0; | |
2436 | } | |
2437 | ||
2438 | if (section->lineno != NULL) | |
2439 | { | |
798c1fb8 ILT |
2440 | bfd_vma last_value = 0; |
2441 | ||
252b5132 RH |
2442 | l = §ion->lineno[i]; |
2443 | ||
2444 | for (; i < section->lineno_count; i++) | |
2445 | { | |
2446 | if (l->line_number == 0) | |
2447 | { | |
c8e7bf0d | 2448 | /* Get the symbol this line number points at. */ |
252b5132 RH |
2449 | coff_symbol_type *coff = (coff_symbol_type *) (l->u.sym); |
2450 | if (coff->symbol.value > offset) | |
2451 | break; | |
e643cb45 | 2452 | |
252b5132 | 2453 | *functionname_ptr = coff->symbol.name; |
798c1fb8 | 2454 | last_value = coff->symbol.value; |
252b5132 RH |
2455 | if (coff->native) |
2456 | { | |
2457 | combined_entry_type *s = coff->native; | |
a5c71af8 NC |
2458 | |
2459 | BFD_ASSERT (s->is_sym); | |
252b5132 RH |
2460 | s = s + 1 + s->u.syment.n_numaux; |
2461 | ||
2462 | /* In XCOFF a debugging symbol can follow the | |
2463 | function symbol. */ | |
2464 | if (s->u.syment.n_scnum == N_DEBUG) | |
2465 | s = s + 1 + s->u.syment.n_numaux; | |
2466 | ||
2467 | /* S should now point to the .bf of the function. */ | |
2468 | if (s->u.syment.n_numaux) | |
2469 | { | |
2470 | /* The linenumber is stored in the auxent. */ | |
2471 | union internal_auxent *a = &((s + 1)->u.auxent); | |
a5c71af8 | 2472 | |
252b5132 RH |
2473 | line_base = a->x_sym.x_misc.x_lnsz.x_lnno; |
2474 | *line_ptr = line_base; | |
2475 | } | |
2476 | } | |
2477 | } | |
2478 | else | |
2479 | { | |
2480 | if (l->u.offset > offset) | |
2481 | break; | |
2482 | *line_ptr = l->line_number + line_base - 1; | |
2483 | } | |
2484 | l++; | |
2485 | } | |
798c1fb8 ILT |
2486 | |
2487 | /* If we fell off the end of the loop, then assume that this | |
2488 | symbol has no line number info. Otherwise, symbols with no | |
2489 | line number info get reported with the line number of the | |
2490 | last line of the last symbol which does have line number | |
2491 | info. We use 0x100 as a slop to account for cases where the | |
2492 | last line has executable code. */ | |
2493 | if (i >= section->lineno_count | |
2494 | && last_value != 0 | |
2495 | && offset - last_value > 0x100) | |
2496 | { | |
2497 | *functionname_ptr = NULL; | |
2498 | *line_ptr = 0; | |
2499 | } | |
252b5132 RH |
2500 | } |
2501 | ||
2502 | /* Cache the results for the next call. */ | |
2503 | if (sec_data == NULL && section->owner == abfd) | |
2504 | { | |
dc810e39 | 2505 | amt = sizeof (struct coff_section_tdata); |
c8e7bf0d | 2506 | section->used_by_bfd = bfd_zalloc (abfd, amt); |
252b5132 RH |
2507 | sec_data = (struct coff_section_tdata *) section->used_by_bfd; |
2508 | } | |
e643cb45 | 2509 | |
252b5132 RH |
2510 | if (sec_data != NULL) |
2511 | { | |
2512 | sec_data->offset = offset; | |
70df0c05 | 2513 | sec_data->i = i - 1; |
252b5132 RH |
2514 | sec_data->function = *functionname_ptr; |
2515 | sec_data->line_base = line_base; | |
2516 | } | |
2517 | ||
b34976b6 | 2518 | return TRUE; |
252b5132 RH |
2519 | } |
2520 | ||
fc28f9aa TG |
2521 | bfd_boolean |
2522 | coff_find_nearest_line (bfd *abfd, | |
fc28f9aa | 2523 | asymbol **symbols, |
fb167eb2 | 2524 | asection *section, |
fc28f9aa TG |
2525 | bfd_vma offset, |
2526 | const char **filename_ptr, | |
2527 | const char **functionname_ptr, | |
fb167eb2 AM |
2528 | unsigned int *line_ptr, |
2529 | unsigned int *discriminator_ptr) | |
fc28f9aa | 2530 | { |
fb167eb2 AM |
2531 | if (discriminator_ptr) |
2532 | *discriminator_ptr = 0; | |
2533 | return coff_find_nearest_line_with_names (abfd, symbols, section, offset, | |
07d6d2b8 AM |
2534 | filename_ptr, functionname_ptr, |
2535 | line_ptr, dwarf_debug_sections); | |
fc28f9aa TG |
2536 | } |
2537 | ||
4ab527b0 FF |
2538 | bfd_boolean |
2539 | coff_find_inliner_info (bfd *abfd, | |
2540 | const char **filename_ptr, | |
2541 | const char **functionname_ptr, | |
2542 | unsigned int *line_ptr) | |
2543 | { | |
2544 | bfd_boolean found; | |
2545 | ||
2546 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
2547 | functionname_ptr, line_ptr, | |
2548 | &coff_data(abfd)->dwarf2_find_line_info); | |
2549 | return (found); | |
2550 | } | |
2551 | ||
252b5132 | 2552 | int |
a6b96beb | 2553 | coff_sizeof_headers (bfd *abfd, struct bfd_link_info *info) |
252b5132 RH |
2554 | { |
2555 | size_t size; | |
2556 | ||
0e1862bb | 2557 | if (!bfd_link_relocatable (info)) |
c8e7bf0d | 2558 | size = bfd_coff_filhsz (abfd) + bfd_coff_aoutsz (abfd); |
252b5132 | 2559 | else |
c8e7bf0d | 2560 | size = bfd_coff_filhsz (abfd); |
252b5132 RH |
2561 | |
2562 | size += abfd->section_count * bfd_coff_scnhsz (abfd); | |
2563 | return size; | |
2564 | } | |
2565 | ||
2566 | /* Change the class of a coff symbol held by BFD. */ | |
c8e7bf0d | 2567 | |
b34976b6 | 2568 | bfd_boolean |
07d6d2b8 AM |
2569 | bfd_coff_set_symbol_class (bfd * abfd, |
2570 | asymbol * symbol, | |
2571 | unsigned int symbol_class) | |
252b5132 RH |
2572 | { |
2573 | coff_symbol_type * csym; | |
2574 | ||
f4943d82 | 2575 | csym = coff_symbol_from (symbol); |
252b5132 RH |
2576 | if (csym == NULL) |
2577 | { | |
2578 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 2579 | return FALSE; |
252b5132 RH |
2580 | } |
2581 | else if (csym->native == NULL) | |
2582 | { | |
2583 | /* This is an alien symbol which no native coff backend data. | |
2584 | We cheat here by creating a fake native entry for it and | |
2585 | then filling in the class. This code is based on that in | |
2586 | coff_write_alien_symbol(). */ | |
244148ad | 2587 | |
252b5132 | 2588 | combined_entry_type * native; |
dc810e39 | 2589 | bfd_size_type amt = sizeof (* native); |
252b5132 | 2590 | |
a50b1753 | 2591 | native = (combined_entry_type *) bfd_zalloc (abfd, amt); |
252b5132 | 2592 | if (native == NULL) |
b34976b6 | 2593 | return FALSE; |
252b5132 | 2594 | |
a5c71af8 | 2595 | native->is_sym = TRUE; |
252b5132 | 2596 | native->u.syment.n_type = T_NULL; |
96d56e9f | 2597 | native->u.syment.n_sclass = symbol_class; |
244148ad | 2598 | |
252b5132 RH |
2599 | if (bfd_is_und_section (symbol->section)) |
2600 | { | |
2601 | native->u.syment.n_scnum = N_UNDEF; | |
2602 | native->u.syment.n_value = symbol->value; | |
2603 | } | |
2604 | else if (bfd_is_com_section (symbol->section)) | |
2605 | { | |
2606 | native->u.syment.n_scnum = N_UNDEF; | |
2607 | native->u.syment.n_value = symbol->value; | |
2608 | } | |
2609 | else | |
2610 | { | |
2611 | native->u.syment.n_scnum = | |
2612 | symbol->section->output_section->target_index; | |
2613 | native->u.syment.n_value = (symbol->value | |
2614 | + symbol->section->output_offset); | |
2615 | if (! obj_pe (abfd)) | |
2616 | native->u.syment.n_value += symbol->section->output_section->vma; | |
244148ad | 2617 | |
08da05b0 | 2618 | /* Copy the any flags from the file header into the symbol. |
252b5132 RH |
2619 | FIXME: Why? */ |
2620 | native->u.syment.n_flags = bfd_asymbol_bfd (& csym->symbol)->flags; | |
2621 | } | |
244148ad | 2622 | |
252b5132 RH |
2623 | csym->native = native; |
2624 | } | |
2625 | else | |
96d56e9f | 2626 | csym->native->u.syment.n_sclass = symbol_class; |
244148ad | 2627 | |
b34976b6 | 2628 | return TRUE; |
252b5132 | 2629 | } |
082b7297 | 2630 | |
c77ec726 AM |
2631 | bfd_boolean |
2632 | _bfd_coff_section_already_linked (bfd *abfd, | |
2633 | asection *sec, | |
2634 | struct bfd_link_info *info) | |
2635 | { | |
2636 | flagword flags; | |
2637 | const char *name, *key; | |
2638 | struct bfd_section_already_linked *l; | |
2639 | struct bfd_section_already_linked_hash_entry *already_linked_list; | |
2640 | struct coff_comdat_info *s_comdat; | |
2641 | ||
2642 | flags = sec->flags; | |
2643 | if ((flags & SEC_LINK_ONCE) == 0) | |
2644 | return FALSE; | |
2645 | ||
2646 | /* The COFF backend linker doesn't support group sections. */ | |
2647 | if ((flags & SEC_GROUP) != 0) | |
2648 | return FALSE; | |
2649 | ||
2650 | name = bfd_get_section_name (abfd, sec); | |
2651 | s_comdat = bfd_coff_get_comdat_section (abfd, sec); | |
2652 | ||
2653 | if (s_comdat != NULL) | |
2654 | key = s_comdat->name; | |
2655 | else | |
2656 | { | |
2657 | if (CONST_STRNEQ (name, ".gnu.linkonce.") | |
2658 | && (key = strchr (name + sizeof (".gnu.linkonce.") - 1, '.')) != NULL) | |
2659 | key++; | |
2660 | else | |
2661 | /* FIXME: gcc as of 2011-09 emits sections like .text$<key>, | |
2662 | .xdata$<key> and .pdata$<key> only the first of which has a | |
2663 | comdat key. Should these all match the LTO IR key? */ | |
2664 | key = name; | |
2665 | } | |
2666 | ||
2667 | already_linked_list = bfd_section_already_linked_table_lookup (key); | |
2668 | ||
2669 | for (l = already_linked_list->entry; l != NULL; l = l->next) | |
2670 | { | |
2671 | struct coff_comdat_info *l_comdat; | |
2672 | ||
2673 | l_comdat = bfd_coff_get_comdat_section (l->sec->owner, l->sec); | |
2674 | ||
2675 | /* The section names must match, and both sections must be | |
2676 | comdat and have the same comdat name, or both sections must | |
2677 | be non-comdat. LTO IR plugin sections are an exception. They | |
2678 | are always named .gnu.linkonce.t.<key> (<key> is some string) | |
2679 | and match any comdat section with comdat name of <key>, and | |
2680 | any linkonce section with the same suffix, ie. | |
2681 | .gnu.linkonce.*.<key>. */ | |
2682 | if (((s_comdat != NULL) == (l_comdat != NULL) | |
2683 | && strcmp (name, l->sec->name) == 0) | |
2684 | || (l->sec->owner->flags & BFD_PLUGIN) != 0) | |
2685 | { | |
2686 | /* The section has already been linked. See if we should | |
2687 | issue a warning. */ | |
2688 | return _bfd_handle_already_linked (sec, l, info); | |
2689 | } | |
2690 | } | |
2691 | ||
2692 | /* This is the first section with this name. Record it. */ | |
2693 | if (!bfd_section_already_linked_table_insert (already_linked_list, sec)) | |
2694 | info->callbacks->einfo (_("%F%P: already_linked_table: %E\n")); | |
2695 | return FALSE; | |
2696 | } | |
0f088b2a KT |
2697 | |
2698 | /* Initialize COOKIE for input bfd ABFD. */ | |
2699 | ||
2700 | static bfd_boolean | |
2701 | init_reloc_cookie (struct coff_reloc_cookie *cookie, | |
2702 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
2703 | bfd *abfd) | |
2704 | { | |
2705 | /* Sometimes the symbol table does not yet have been loaded here. */ | |
2706 | bfd_coff_slurp_symbol_table (abfd); | |
2707 | ||
2708 | cookie->abfd = abfd; | |
2709 | cookie->sym_hashes = obj_coff_sym_hashes (abfd); | |
2710 | ||
2711 | cookie->symbols = obj_symbols (abfd); | |
2712 | ||
2713 | return TRUE; | |
2714 | } | |
2715 | ||
2716 | /* Free the memory allocated by init_reloc_cookie, if appropriate. */ | |
2717 | ||
2718 | static void | |
2719 | fini_reloc_cookie (struct coff_reloc_cookie *cookie ATTRIBUTE_UNUSED, | |
2720 | bfd *abfd ATTRIBUTE_UNUSED) | |
2721 | { | |
2722 | /* Nothing to do. */ | |
2723 | } | |
2724 | ||
2725 | /* Initialize the relocation information in COOKIE for input section SEC | |
2726 | of input bfd ABFD. */ | |
2727 | ||
2728 | static bfd_boolean | |
2729 | init_reloc_cookie_rels (struct coff_reloc_cookie *cookie, | |
2730 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
2731 | bfd *abfd, | |
2732 | asection *sec) | |
2733 | { | |
2734 | if (sec->reloc_count == 0) | |
2735 | { | |
2736 | cookie->rels = NULL; | |
2737 | cookie->relend = NULL; | |
2738 | cookie->rel = NULL; | |
2739 | return TRUE; | |
2740 | } | |
2741 | ||
2742 | cookie->rels = _bfd_coff_read_internal_relocs (abfd, sec, FALSE, NULL, 0, NULL); | |
2743 | ||
2744 | if (cookie->rels == NULL) | |
2745 | return FALSE; | |
2746 | ||
2747 | cookie->rel = cookie->rels; | |
2748 | cookie->relend = (cookie->rels + sec->reloc_count); | |
2749 | return TRUE; | |
2750 | } | |
2751 | ||
2752 | /* Free the memory allocated by init_reloc_cookie_rels, | |
2753 | if appropriate. */ | |
2754 | ||
2755 | static void | |
2756 | fini_reloc_cookie_rels (struct coff_reloc_cookie *cookie, | |
2757 | asection *sec) | |
2758 | { | |
147d994b NC |
2759 | if (cookie->rels |
2760 | /* PR 20401. The relocs may not have been cached, so check first. | |
2761 | If the relocs were loaded by init_reloc_cookie_rels() then this | |
2762 | will be the case. FIXME: Would performance be improved if the | |
2763 | relocs *were* cached ? */ | |
2764 | && coff_section_data (NULL, sec) | |
2765 | && coff_section_data (NULL, sec)->relocs != cookie->rels) | |
0f088b2a KT |
2766 | free (cookie->rels); |
2767 | } | |
2768 | ||
2769 | /* Initialize the whole of COOKIE for input section SEC. */ | |
2770 | ||
2771 | static bfd_boolean | |
2772 | init_reloc_cookie_for_section (struct coff_reloc_cookie *cookie, | |
2773 | struct bfd_link_info *info, | |
2774 | asection *sec) | |
2775 | { | |
2776 | if (!init_reloc_cookie (cookie, info, sec->owner)) | |
2777 | return FALSE; | |
2778 | ||
2779 | if (!init_reloc_cookie_rels (cookie, info, sec->owner, sec)) | |
2780 | { | |
2781 | fini_reloc_cookie (cookie, sec->owner); | |
2782 | return FALSE; | |
2783 | } | |
2784 | return TRUE; | |
2785 | } | |
2786 | ||
2787 | /* Free the memory allocated by init_reloc_cookie_for_section, | |
2788 | if appropriate. */ | |
2789 | ||
2790 | static void | |
2791 | fini_reloc_cookie_for_section (struct coff_reloc_cookie *cookie, | |
2792 | asection *sec) | |
2793 | { | |
2794 | fini_reloc_cookie_rels (cookie, sec); | |
2795 | fini_reloc_cookie (cookie, sec->owner); | |
2796 | } | |
2797 | ||
2798 | static asection * | |
2799 | _bfd_coff_gc_mark_hook (asection *sec, | |
2800 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
2801 | struct internal_reloc *rel ATTRIBUTE_UNUSED, | |
2802 | struct coff_link_hash_entry *h, | |
2803 | struct internal_syment *sym) | |
2804 | { | |
2805 | if (h != NULL) | |
2806 | { | |
2807 | switch (h->root.type) | |
07d6d2b8 AM |
2808 | { |
2809 | case bfd_link_hash_defined: | |
2810 | case bfd_link_hash_defweak: | |
2811 | return h->root.u.def.section; | |
0f088b2a | 2812 | |
07d6d2b8 AM |
2813 | case bfd_link_hash_common: |
2814 | return h->root.u.c.p->section; | |
0f088b2a | 2815 | |
0f088b2a | 2816 | case bfd_link_hash_undefweak: |
1fd6d111 TG |
2817 | if (h->symbol_class == C_NT_WEAK && h->numaux == 1) |
2818 | { | |
2819 | /* PE weak externals. A weak symbol may include an auxiliary | |
2820 | record indicating that if the weak symbol is not resolved, | |
2821 | another external symbol is used instead. */ | |
2822 | struct coff_link_hash_entry *h2 = | |
2823 | h->auxbfd->tdata.coff_obj_data->sym_hashes[ | |
2824 | h->aux->x_sym.x_tagndx.l]; | |
2825 | ||
2826 | if (h2 && h2->root.type != bfd_link_hash_undefined) | |
2827 | return h2->root.u.def.section; | |
2828 | } | |
2829 | break; | |
2830 | ||
2831 | case bfd_link_hash_undefined: | |
07d6d2b8 AM |
2832 | default: |
2833 | break; | |
2834 | } | |
0f088b2a KT |
2835 | return NULL; |
2836 | } | |
2837 | ||
2838 | return coff_section_from_bfd_index (sec->owner, sym->n_scnum); | |
2839 | } | |
2840 | ||
2841 | /* COOKIE->rel describes a relocation against section SEC, which is | |
2842 | a section we've decided to keep. Return the section that contains | |
2843 | the relocation symbol, or NULL if no section contains it. */ | |
2844 | ||
2845 | static asection * | |
2846 | _bfd_coff_gc_mark_rsec (struct bfd_link_info *info, asection *sec, | |
2847 | coff_gc_mark_hook_fn gc_mark_hook, | |
2848 | struct coff_reloc_cookie *cookie) | |
2849 | { | |
2850 | struct coff_link_hash_entry *h; | |
2851 | ||
2852 | h = cookie->sym_hashes[cookie->rel->r_symndx]; | |
2853 | if (h != NULL) | |
2854 | { | |
2855 | while (h->root.type == bfd_link_hash_indirect | |
2856 | || h->root.type == bfd_link_hash_warning) | |
2857 | h = (struct coff_link_hash_entry *) h->root.u.i.link; | |
2858 | ||
2859 | return (*gc_mark_hook) (sec, info, cookie->rel, h, NULL); | |
2860 | } | |
2861 | ||
2862 | return (*gc_mark_hook) (sec, info, cookie->rel, NULL, | |
2863 | &(cookie->symbols | |
2864 | + obj_convert (sec->owner)[cookie->rel->r_symndx])->native->u.syment); | |
2865 | } | |
2866 | ||
2867 | static bfd_boolean _bfd_coff_gc_mark | |
2868 | (struct bfd_link_info *, asection *, coff_gc_mark_hook_fn); | |
2869 | ||
2870 | /* COOKIE->rel describes a relocation against section SEC, which is | |
2871 | a section we've decided to keep. Mark the section that contains | |
2872 | the relocation symbol. */ | |
2873 | ||
2874 | static bfd_boolean | |
2875 | _bfd_coff_gc_mark_reloc (struct bfd_link_info *info, | |
2876 | asection *sec, | |
2877 | coff_gc_mark_hook_fn gc_mark_hook, | |
2878 | struct coff_reloc_cookie *cookie) | |
2879 | { | |
2880 | asection *rsec; | |
2881 | ||
2882 | rsec = _bfd_coff_gc_mark_rsec (info, sec, gc_mark_hook, cookie); | |
2883 | if (rsec && !rsec->gc_mark) | |
2884 | { | |
2885 | if (bfd_get_flavour (rsec->owner) != bfd_target_coff_flavour) | |
2886 | rsec->gc_mark = 1; | |
2887 | else if (!_bfd_coff_gc_mark (info, rsec, gc_mark_hook)) | |
2888 | return FALSE; | |
2889 | } | |
2890 | return TRUE; | |
2891 | } | |
2892 | ||
2893 | /* The mark phase of garbage collection. For a given section, mark | |
2894 | it and any sections in this section's group, and all the sections | |
2895 | which define symbols to which it refers. */ | |
2896 | ||
2897 | static bfd_boolean | |
2898 | _bfd_coff_gc_mark (struct bfd_link_info *info, | |
2899 | asection *sec, | |
2900 | coff_gc_mark_hook_fn gc_mark_hook) | |
2901 | { | |
2902 | bfd_boolean ret = TRUE; | |
2903 | ||
2904 | sec->gc_mark = 1; | |
2905 | ||
2906 | /* Look through the section relocs. */ | |
2907 | if ((sec->flags & SEC_RELOC) != 0 | |
2908 | && sec->reloc_count > 0) | |
2909 | { | |
2910 | struct coff_reloc_cookie cookie; | |
2911 | ||
2912 | if (!init_reloc_cookie_for_section (&cookie, info, sec)) | |
07d6d2b8 | 2913 | ret = FALSE; |
0f088b2a | 2914 | else |
07d6d2b8 AM |
2915 | { |
2916 | for (; cookie.rel < cookie.relend; cookie.rel++) | |
2917 | { | |
0f088b2a KT |
2918 | if (!_bfd_coff_gc_mark_reloc (info, sec, gc_mark_hook, &cookie)) |
2919 | { | |
2920 | ret = FALSE; | |
2921 | break; | |
2922 | } | |
2923 | } | |
07d6d2b8 AM |
2924 | fini_reloc_cookie_for_section (&cookie, sec); |
2925 | } | |
0f088b2a KT |
2926 | } |
2927 | ||
2928 | return ret; | |
2929 | } | |
2930 | ||
2931 | static bfd_boolean | |
2932 | _bfd_coff_gc_mark_extra_sections (struct bfd_link_info *info, | |
2933 | coff_gc_mark_hook_fn mark_hook ATTRIBUTE_UNUSED) | |
2934 | { | |
2935 | bfd *ibfd; | |
2936 | ||
2937 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
2938 | { | |
2939 | asection *isec; | |
2940 | bfd_boolean some_kept; | |
2941 | ||
1fd6d111 | 2942 | if (bfd_get_flavour (ibfd) != bfd_target_coff_flavour) |
0f088b2a KT |
2943 | continue; |
2944 | ||
2945 | /* Ensure all linker created sections are kept, and see whether | |
2946 | any other section is already marked. */ | |
2947 | some_kept = FALSE; | |
2948 | for (isec = ibfd->sections; isec != NULL; isec = isec->next) | |
2949 | { | |
2950 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
2951 | isec->gc_mark = 1; | |
2952 | else if (isec->gc_mark) | |
2953 | some_kept = TRUE; | |
2954 | } | |
2955 | ||
2956 | /* If no section in this file will be kept, then we can | |
2957 | toss out debug sections. */ | |
2958 | if (!some_kept) | |
2959 | continue; | |
2960 | ||
2961 | /* Keep debug and special sections like .comment when they are | |
2962 | not part of a group, or when we have single-member groups. */ | |
2963 | for (isec = ibfd->sections; isec != NULL; isec = isec->next) | |
2964 | if ((isec->flags & SEC_DEBUGGING) != 0 | |
2965 | || (isec->flags & (SEC_ALLOC | SEC_LOAD | SEC_RELOC)) == 0) | |
2966 | isec->gc_mark = 1; | |
2967 | } | |
2968 | return TRUE; | |
2969 | } | |
2970 | ||
2971 | /* Sweep symbols in swept sections. Called via coff_link_hash_traverse. */ | |
2972 | ||
2973 | static bfd_boolean | |
2974 | coff_gc_sweep_symbol (struct coff_link_hash_entry *h, | |
2975 | void *data ATTRIBUTE_UNUSED) | |
2976 | { | |
2977 | if (h->root.type == bfd_link_hash_warning) | |
2978 | h = (struct coff_link_hash_entry *) h->root.u.i.link; | |
2979 | ||
2980 | if ((h->root.type == bfd_link_hash_defined | |
2981 | || h->root.type == bfd_link_hash_defweak) | |
2982 | && !h->root.u.def.section->gc_mark | |
2983 | && !(h->root.u.def.section->owner->flags & DYNAMIC)) | |
2984 | { | |
2985 | /* Do our best to hide the symbol. */ | |
2986 | h->root.u.def.section = bfd_und_section_ptr; | |
2987 | h->symbol_class = C_HIDDEN; | |
2988 | } | |
2989 | ||
2990 | return TRUE; | |
2991 | } | |
2992 | ||
2993 | /* The sweep phase of garbage collection. Remove all garbage sections. */ | |
2994 | ||
2995 | typedef bfd_boolean (*gc_sweep_hook_fn) | |
2996 | (bfd *, struct bfd_link_info *, asection *, const struct internal_reloc *); | |
2997 | ||
2998 | static bfd_boolean | |
2999 | coff_gc_sweep (bfd *abfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) | |
3000 | { | |
3001 | bfd *sub; | |
3002 | ||
3003 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) | |
3004 | { | |
3005 | asection *o; | |
3006 | ||
3007 | if (bfd_get_flavour (sub) != bfd_target_coff_flavour) | |
3008 | continue; | |
3009 | ||
3010 | for (o = sub->sections; o != NULL; o = o->next) | |
3011 | { | |
3012 | /* Keep debug and special sections. */ | |
07d6d2b8 | 3013 | if ((o->flags & (SEC_DEBUGGING | SEC_LINKER_CREATED)) != 0 |
0f088b2a KT |
3014 | || (o->flags & (SEC_ALLOC | SEC_LOAD | SEC_RELOC)) == 0) |
3015 | o->gc_mark = 1; | |
07d6d2b8 | 3016 | else if (CONST_STRNEQ (o->name, ".idata") |
0f088b2a KT |
3017 | || CONST_STRNEQ (o->name, ".pdata") |
3018 | || CONST_STRNEQ (o->name, ".xdata") | |
3019 | || CONST_STRNEQ (o->name, ".rsrc")) | |
3020 | o->gc_mark = 1; | |
3021 | ||
3022 | if (o->gc_mark) | |
3023 | continue; | |
3024 | ||
3025 | /* Skip sweeping sections already excluded. */ | |
3026 | if (o->flags & SEC_EXCLUDE) | |
3027 | continue; | |
3028 | ||
3029 | /* Since this is early in the link process, it is simple | |
3030 | to remove a section from the output. */ | |
3031 | o->flags |= SEC_EXCLUDE; | |
3032 | ||
3033 | if (info->print_gc_sections && o->size != 0) | |
695344c0 | 3034 | /* xgettext: c-format */ |
59d08d6c | 3035 | _bfd_error_handler (_("removing unused section '%pA' in file '%pB'"), |
dae82561 | 3036 | o, sub); |
0f088b2a KT |
3037 | |
3038 | #if 0 | |
3039 | /* But we also have to update some of the relocation | |
3040 | info we collected before. */ | |
3041 | if (gc_sweep_hook | |
3042 | && (o->flags & SEC_RELOC) != 0 | |
3043 | && o->reloc_count > 0 | |
3044 | && !bfd_is_abs_section (o->output_section)) | |
3045 | { | |
3046 | struct internal_reloc *internal_relocs; | |
3047 | bfd_boolean r; | |
3048 | ||
3049 | internal_relocs | |
3050 | = _bfd_coff_link_read_relocs (o->owner, o, NULL, NULL, | |
3051 | info->keep_memory); | |
3052 | if (internal_relocs == NULL) | |
3053 | return FALSE; | |
3054 | ||
3055 | r = (*gc_sweep_hook) (o->owner, info, o, internal_relocs); | |
3056 | ||
3057 | if (coff_section_data (o)->relocs != internal_relocs) | |
3058 | free (internal_relocs); | |
3059 | ||
3060 | if (!r) | |
3061 | return FALSE; | |
3062 | } | |
3063 | #endif | |
3064 | } | |
3065 | } | |
3066 | ||
3067 | /* Remove the symbols that were in the swept sections from the dynamic | |
3068 | symbol table. */ | |
3069 | coff_link_hash_traverse (coff_hash_table (info), coff_gc_sweep_symbol, | |
3070 | NULL); | |
3071 | ||
3072 | return TRUE; | |
3073 | } | |
3074 | ||
3075 | /* Keep all sections containing symbols undefined on the command-line, | |
3076 | and the section containing the entry symbol. */ | |
3077 | ||
3078 | static void | |
3079 | _bfd_coff_gc_keep (struct bfd_link_info *info) | |
3080 | { | |
3081 | struct bfd_sym_chain *sym; | |
3082 | ||
3083 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) | |
3084 | { | |
3085 | struct coff_link_hash_entry *h; | |
3086 | ||
3087 | h = coff_link_hash_lookup (coff_hash_table (info), sym->name, | |
3088 | FALSE, FALSE, FALSE); | |
3089 | ||
3090 | if (h != NULL | |
3091 | && (h->root.type == bfd_link_hash_defined | |
3092 | || h->root.type == bfd_link_hash_defweak) | |
3093 | && !bfd_is_abs_section (h->root.u.def.section)) | |
3094 | h->root.u.def.section->flags |= SEC_KEEP; | |
3095 | } | |
3096 | } | |
3097 | ||
3098 | /* Do mark and sweep of unused sections. */ | |
3099 | ||
3100 | bfd_boolean | |
3101 | bfd_coff_gc_sections (bfd *abfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) | |
3102 | { | |
3103 | bfd *sub; | |
3104 | ||
3105 | /* FIXME: Should we implement this? */ | |
3106 | #if 0 | |
3107 | const bfd_coff_backend_data *bed = coff_backend_info (abfd); | |
3108 | ||
3109 | if (!bed->can_gc_sections | |
3110 | || !is_coff_hash_table (info->hash)) | |
3111 | { | |
59d08d6c | 3112 | _bfd_error_handler(_("warning: gc-sections option ignored")); |
0f088b2a KT |
3113 | return TRUE; |
3114 | } | |
3115 | #endif | |
3116 | ||
3117 | _bfd_coff_gc_keep (info); | |
3118 | ||
3119 | /* Grovel through relocs to find out who stays ... */ | |
3120 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) | |
3121 | { | |
3122 | asection *o; | |
3123 | ||
3124 | if (bfd_get_flavour (sub) != bfd_target_coff_flavour) | |
07d6d2b8 | 3125 | continue; |
0f088b2a KT |
3126 | |
3127 | for (o = sub->sections; o != NULL; o = o->next) | |
07d6d2b8 | 3128 | { |
0f088b2a KT |
3129 | if (((o->flags & (SEC_EXCLUDE | SEC_KEEP)) == SEC_KEEP |
3130 | || CONST_STRNEQ (o->name, ".vectors") | |
3131 | || CONST_STRNEQ (o->name, ".ctors") | |
3132 | || CONST_STRNEQ (o->name, ".dtors")) | |
3133 | && !o->gc_mark) | |
3134 | { | |
3135 | if (!_bfd_coff_gc_mark (info, o, _bfd_coff_gc_mark_hook)) | |
3136 | return FALSE; | |
3137 | } | |
07d6d2b8 | 3138 | } |
0f088b2a KT |
3139 | } |
3140 | ||
3141 | /* Allow the backend to mark additional target specific sections. */ | |
3142 | _bfd_coff_gc_mark_extra_sections (info, _bfd_coff_gc_mark_hook); | |
3143 | ||
3144 | /* ... and mark SEC_EXCLUDE for those that go. */ | |
3145 | return coff_gc_sweep (abfd, info); | |
3146 | } |