Commit | Line | Data |
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252b5132 | 1 | /* Support for the generic parts of COFF, for BFD. |
7898deda | 2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
aa820537 | 3 | 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
252b5132 RH |
4 | Free Software Foundation, Inc. |
5 | Written by Cygnus Support. | |
6 | ||
c8e7bf0d | 7 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 8 | |
c8e7bf0d NC |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c8e7bf0d | 12 | (at your option) any later version. |
252b5132 | 13 | |
c8e7bf0d NC |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
252b5132 | 18 | |
c8e7bf0d NC |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
21 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
22 | MA 02110-1301, USA. */ | |
252b5132 RH |
23 | |
24 | /* Most of this hacked by Steve Chamberlain, sac@cygnus.com. | |
25 | Split out of coffcode.h by Ian Taylor, ian@cygnus.com. */ | |
26 | ||
27 | /* This file contains COFF code that is not dependent on any | |
28 | particular COFF target. There is only one version of this file in | |
29 | libbfd.a, so no target specific code may be put in here. Or, to | |
30 | put it another way, | |
31 | ||
32 | ********** DO NOT PUT TARGET SPECIFIC CODE IN THIS FILE ********** | |
33 | ||
34 | If you need to add some target specific behaviour, add a new hook | |
35 | function to bfd_coff_backend_data. | |
36 | ||
37 | Some of these functions are also called by the ECOFF routines. | |
38 | Those functions may not use any COFF specific information, such as | |
39 | coff_data (abfd). */ | |
40 | ||
252b5132 | 41 | #include "sysdep.h" |
3db64b00 | 42 | #include "bfd.h" |
252b5132 RH |
43 | #include "libbfd.h" |
44 | #include "coff/internal.h" | |
45 | #include "libcoff.h" | |
46 | ||
252b5132 RH |
47 | /* Take a section header read from a coff file (in HOST byte order), |
48 | and make a BFD "section" out of it. This is used by ECOFF. */ | |
c8e7bf0d | 49 | |
b34976b6 | 50 | static bfd_boolean |
c8e7bf0d NC |
51 | make_a_section_from_file (bfd *abfd, |
52 | struct internal_scnhdr *hdr, | |
53 | unsigned int target_index) | |
252b5132 RH |
54 | { |
55 | asection *return_section; | |
56 | char *name; | |
b34976b6 | 57 | bfd_boolean result = TRUE; |
7c8ca0e4 | 58 | flagword flags; |
252b5132 RH |
59 | |
60 | name = NULL; | |
61 | ||
88183869 DK |
62 | /* Handle long section names as in PE. On reading, we want to |
63 | accept long names if the format permits them at all, regardless | |
64 | of the current state of the flag that dictates if we would generate | |
65 | them in outputs; this construct checks if that is the case by | |
66 | attempting to set the flag, without changing its state; the call | |
67 | will fail for formats that do not support long names at all. */ | |
68 | if (bfd_coff_set_long_section_names (abfd, bfd_coff_long_section_names (abfd)) | |
252b5132 RH |
69 | && hdr->s_name[0] == '/') |
70 | { | |
71 | char buf[SCNNMLEN]; | |
72 | long strindex; | |
73 | char *p; | |
74 | const char *strings; | |
75 | ||
0408dee6 DK |
76 | /* Flag that this BFD uses long names, even though the format might |
77 | expect them to be off by default. This won't directly affect the | |
78 | format of any output BFD created from this one, but the information | |
79 | can be used to decide what to do. */ | |
80 | bfd_coff_set_long_section_names (abfd, TRUE); | |
252b5132 RH |
81 | memcpy (buf, hdr->s_name + 1, SCNNMLEN - 1); |
82 | buf[SCNNMLEN - 1] = '\0'; | |
83 | strindex = strtol (buf, &p, 10); | |
84 | if (*p == '\0' && strindex >= 0) | |
85 | { | |
86 | strings = _bfd_coff_read_string_table (abfd); | |
87 | if (strings == NULL) | |
b34976b6 | 88 | return FALSE; |
252b5132 RH |
89 | /* FIXME: For extra safety, we should make sure that |
90 | strindex does not run us past the end, but right now we | |
91 | don't know the length of the string table. */ | |
92 | strings += strindex; | |
a50b1753 | 93 | name = (char *) bfd_alloc (abfd, |
a29a8af8 | 94 | (bfd_size_type) strlen (strings) + 1 + 1); |
252b5132 | 95 | if (name == NULL) |
b34976b6 | 96 | return FALSE; |
252b5132 RH |
97 | strcpy (name, strings); |
98 | } | |
99 | } | |
100 | ||
101 | if (name == NULL) | |
102 | { | |
103 | /* Assorted wastage to null-terminate the name, thanks AT&T! */ | |
a50b1753 | 104 | name = (char *) bfd_alloc (abfd, |
a29a8af8 | 105 | (bfd_size_type) sizeof (hdr->s_name) + 1 + 1); |
252b5132 | 106 | if (name == NULL) |
b34976b6 | 107 | return FALSE; |
252b5132 RH |
108 | strncpy (name, (char *) &hdr->s_name[0], sizeof (hdr->s_name)); |
109 | name[sizeof (hdr->s_name)] = 0; | |
110 | } | |
111 | ||
112 | return_section = bfd_make_section_anyway (abfd, name); | |
113 | if (return_section == NULL) | |
b34976b6 | 114 | return FALSE; |
252b5132 RH |
115 | |
116 | return_section->vma = hdr->s_vaddr; | |
117 | return_section->lma = hdr->s_paddr; | |
eea6121a | 118 | return_section->size = hdr->s_size; |
252b5132 RH |
119 | return_section->filepos = hdr->s_scnptr; |
120 | return_section->rel_filepos = hdr->s_relptr; | |
121 | return_section->reloc_count = hdr->s_nreloc; | |
122 | ||
123 | bfd_coff_set_alignment_hook (abfd, return_section, hdr); | |
124 | ||
125 | return_section->line_filepos = hdr->s_lnnoptr; | |
126 | ||
127 | return_section->lineno_count = hdr->s_nlnno; | |
128 | return_section->userdata = NULL; | |
c8e7bf0d | 129 | return_section->next = NULL; |
252b5132 | 130 | return_section->target_index = target_index; |
7c8ca0e4 NC |
131 | |
132 | if (! bfd_coff_styp_to_sec_flags_hook (abfd, hdr, name, return_section, | |
133 | & flags)) | |
b34976b6 | 134 | result = FALSE; |
dc810e39 | 135 | |
7c8ca0e4 | 136 | return_section->flags = flags; |
252b5132 RH |
137 | |
138 | /* At least on i386-coff, the line number count for a shared library | |
139 | section must be ignored. */ | |
140 | if ((return_section->flags & SEC_COFF_SHARED_LIBRARY) != 0) | |
141 | return_section->lineno_count = 0; | |
142 | ||
143 | if (hdr->s_nreloc != 0) | |
144 | return_section->flags |= SEC_RELOC; | |
c8e7bf0d | 145 | /* FIXME: should this check 'hdr->s_size > 0'. */ |
252b5132 RH |
146 | if (hdr->s_scnptr != 0) |
147 | return_section->flags |= SEC_HAS_CONTENTS; | |
7c8ca0e4 | 148 | |
a29a8af8 KT |
149 | /* Compress/decompress DWARF debug sections with names: .debug_* and |
150 | .zdebug_*, after the section flags is set. */ | |
151 | if ((flags & SEC_DEBUGGING) | |
152 | && ((name[1] == 'd' && name[6] == '_') | |
153 | || (name[1] == 'z' && name[7] == '_'))) | |
154 | { | |
155 | enum { nothing, compress, decompress } action = nothing; | |
156 | char *new_name = NULL; | |
157 | ||
158 | if (bfd_is_section_compressed (abfd, return_section)) | |
159 | { | |
160 | /* Compressed section. Check if we should decompress. */ | |
161 | if ((abfd->flags & BFD_DECOMPRESS)) | |
162 | action = decompress; | |
163 | } | |
164 | else if (!bfd_is_section_compressed (abfd, return_section)) | |
165 | { | |
166 | /* Normal section. Check if we should compress. */ | |
167 | if ((abfd->flags & BFD_COMPRESS) && return_section->size != 0) | |
168 | action = compress; | |
169 | } | |
170 | ||
171 | switch (action) | |
172 | { | |
173 | case nothing: | |
174 | break; | |
175 | case compress: | |
176 | if (!bfd_init_section_compress_status (abfd, return_section)) | |
177 | { | |
178 | (*_bfd_error_handler) | |
179 | (_("%B: unable to initialize compress status for section %s"), | |
180 | abfd, name); | |
181 | return FALSE; | |
182 | } | |
183 | if (name[1] != 'z') | |
184 | { | |
185 | unsigned int len = strlen (name); | |
186 | ||
187 | new_name = bfd_alloc (abfd, len + 2); | |
188 | if (new_name == NULL) | |
189 | return FALSE; | |
190 | new_name[0] = '.'; | |
191 | new_name[1] = 'z'; | |
192 | memcpy (new_name + 2, name + 1, len); | |
193 | } | |
194 | break; | |
195 | case decompress: | |
196 | if (!bfd_init_section_decompress_status (abfd, return_section)) | |
197 | { | |
198 | (*_bfd_error_handler) | |
199 | (_("%B: unable to initialize decompress status for section %s"), | |
200 | abfd, name); | |
201 | return FALSE; | |
202 | } | |
203 | if (name[1] == 'z') | |
204 | { | |
205 | unsigned int len = strlen (name); | |
206 | ||
207 | new_name = bfd_alloc (abfd, len); | |
208 | if (new_name == NULL) | |
209 | return FALSE; | |
210 | new_name[0] = '.'; | |
211 | memcpy (new_name + 1, name + 2, len - 1); | |
212 | } | |
213 | break; | |
214 | } | |
215 | if (new_name != NULL) | |
216 | bfd_rename_section (abfd, return_section, new_name); | |
217 | } | |
218 | ||
7c8ca0e4 | 219 | return result; |
252b5132 RH |
220 | } |
221 | ||
222 | /* Read in a COFF object and make it into a BFD. This is used by | |
223 | ECOFF as well. */ | |
224 | ||
225 | static const bfd_target * | |
c8e7bf0d NC |
226 | coff_real_object_p (bfd *abfd, |
227 | unsigned nscns, | |
228 | struct internal_filehdr *internal_f, | |
229 | struct internal_aouthdr *internal_a) | |
252b5132 RH |
230 | { |
231 | flagword oflags = abfd->flags; | |
232 | bfd_vma ostart = bfd_get_start_address (abfd); | |
c8e7bf0d NC |
233 | void * tdata; |
234 | void * tdata_save; | |
235 | bfd_size_type readsize; /* Length of file_info. */ | |
252b5132 RH |
236 | unsigned int scnhsz; |
237 | char *external_sections; | |
238 | ||
239 | if (!(internal_f->f_flags & F_RELFLG)) | |
240 | abfd->flags |= HAS_RELOC; | |
241 | if ((internal_f->f_flags & F_EXEC)) | |
242 | abfd->flags |= EXEC_P; | |
243 | if (!(internal_f->f_flags & F_LNNO)) | |
244 | abfd->flags |= HAS_LINENO; | |
245 | if (!(internal_f->f_flags & F_LSYMS)) | |
246 | abfd->flags |= HAS_LOCALS; | |
247 | ||
248 | /* FIXME: How can we set D_PAGED correctly? */ | |
249 | if ((internal_f->f_flags & F_EXEC) != 0) | |
250 | abfd->flags |= D_PAGED; | |
251 | ||
252 | bfd_get_symcount (abfd) = internal_f->f_nsyms; | |
253 | if (internal_f->f_nsyms) | |
254 | abfd->flags |= HAS_SYMS; | |
255 | ||
256 | if (internal_a != (struct internal_aouthdr *) NULL) | |
257 | bfd_get_start_address (abfd) = internal_a->entry; | |
258 | else | |
259 | bfd_get_start_address (abfd) = 0; | |
260 | ||
261 | /* Set up the tdata area. ECOFF uses its own routine, and overrides | |
262 | abfd->flags. */ | |
487e54f2 | 263 | tdata_save = abfd->tdata.any; |
c8e7bf0d | 264 | tdata = bfd_coff_mkobject_hook (abfd, (void *) internal_f, (void *) internal_a); |
252b5132 | 265 | if (tdata == NULL) |
487e54f2 | 266 | goto fail2; |
252b5132 RH |
267 | |
268 | scnhsz = bfd_coff_scnhsz (abfd); | |
dc810e39 | 269 | readsize = (bfd_size_type) nscns * scnhsz; |
a50b1753 | 270 | external_sections = (char *) bfd_alloc (abfd, readsize); |
252b5132 RH |
271 | if (!external_sections) |
272 | goto fail; | |
273 | ||
c8e7bf0d | 274 | if (bfd_bread ((void *) external_sections, readsize, abfd) != readsize) |
252b5132 RH |
275 | goto fail; |
276 | ||
363d7b14 | 277 | /* Set the arch/mach *before* swapping in sections; section header swapping |
244148ad | 278 | may depend on arch/mach info. */ |
c8e7bf0d | 279 | if (! bfd_coff_set_arch_mach_hook (abfd, (void *) internal_f)) |
363d7b14 TW |
280 | goto fail; |
281 | ||
e16bb312 | 282 | /* Now copy data as required; construct all asections etc. */ |
252b5132 RH |
283 | if (nscns != 0) |
284 | { | |
285 | unsigned int i; | |
286 | for (i = 0; i < nscns; i++) | |
287 | { | |
288 | struct internal_scnhdr tmp; | |
289 | bfd_coff_swap_scnhdr_in (abfd, | |
c8e7bf0d NC |
290 | (void *) (external_sections + i * scnhsz), |
291 | (void *) & tmp); | |
252b5132 RH |
292 | if (! make_a_section_from_file (abfd, &tmp, i + 1)) |
293 | goto fail; | |
294 | } | |
295 | } | |
296 | ||
252b5132 RH |
297 | return abfd->xvec; |
298 | ||
299 | fail: | |
300 | bfd_release (abfd, tdata); | |
487e54f2 AM |
301 | fail2: |
302 | abfd->tdata.any = tdata_save; | |
252b5132 RH |
303 | abfd->flags = oflags; |
304 | bfd_get_start_address (abfd) = ostart; | |
305 | return (const bfd_target *) NULL; | |
306 | } | |
307 | ||
308 | /* Turn a COFF file into a BFD, but fail with bfd_error_wrong_format if it is | |
309 | not a COFF file. This is also used by ECOFF. */ | |
310 | ||
311 | const bfd_target * | |
c8e7bf0d | 312 | coff_object_p (bfd *abfd) |
252b5132 | 313 | { |
dc810e39 AM |
314 | bfd_size_type filhsz; |
315 | bfd_size_type aoutsz; | |
316 | unsigned int nscns; | |
c8e7bf0d | 317 | void * filehdr; |
252b5132 RH |
318 | struct internal_filehdr internal_f; |
319 | struct internal_aouthdr internal_a; | |
320 | ||
c8e7bf0d | 321 | /* Figure out how much to read. */ |
252b5132 RH |
322 | filhsz = bfd_coff_filhsz (abfd); |
323 | aoutsz = bfd_coff_aoutsz (abfd); | |
324 | ||
325 | filehdr = bfd_alloc (abfd, filhsz); | |
326 | if (filehdr == NULL) | |
487e54f2 | 327 | return NULL; |
dc810e39 | 328 | if (bfd_bread (filehdr, filhsz, abfd) != filhsz) |
252b5132 RH |
329 | { |
330 | if (bfd_get_error () != bfd_error_system_call) | |
331 | bfd_set_error (bfd_error_wrong_format); | |
487e54f2 AM |
332 | bfd_release (abfd, filehdr); |
333 | return NULL; | |
252b5132 RH |
334 | } |
335 | bfd_coff_swap_filehdr_in (abfd, filehdr, &internal_f); | |
336 | bfd_release (abfd, filehdr); | |
337 | ||
b8819ab2 NC |
338 | /* The XCOFF format has two sizes for the f_opthdr. SMALL_AOUTSZ |
339 | (less than aoutsz) used in object files and AOUTSZ (equal to | |
340 | aoutsz) in executables. The bfd_coff_swap_aouthdr_in function | |
341 | expects this header to be aoutsz bytes in length, so we use that | |
342 | value in the call to bfd_alloc below. But we must be careful to | |
343 | only read in f_opthdr bytes in the call to bfd_bread. We should | |
344 | also attempt to catch corrupt or non-COFF binaries with a strange | |
345 | value for f_opthdr. */ | |
82e51918 | 346 | if (! bfd_coff_bad_format_hook (abfd, &internal_f) |
95f7d9f7 | 347 | || internal_f.f_opthdr > aoutsz) |
252b5132 RH |
348 | { |
349 | bfd_set_error (bfd_error_wrong_format); | |
487e54f2 | 350 | return NULL; |
252b5132 RH |
351 | } |
352 | nscns = internal_f.f_nscns; | |
353 | ||
354 | if (internal_f.f_opthdr) | |
355 | { | |
c8e7bf0d | 356 | void * opthdr; |
252b5132 RH |
357 | |
358 | opthdr = bfd_alloc (abfd, aoutsz); | |
359 | if (opthdr == NULL) | |
487e54f2 | 360 | return NULL; |
dc810e39 | 361 | if (bfd_bread (opthdr, (bfd_size_type) internal_f.f_opthdr, abfd) |
252b5132 RH |
362 | != internal_f.f_opthdr) |
363 | { | |
487e54f2 AM |
364 | bfd_release (abfd, opthdr); |
365 | return NULL; | |
252b5132 | 366 | } |
c8e7bf0d | 367 | bfd_coff_swap_aouthdr_in (abfd, opthdr, (void *) &internal_a); |
487e54f2 | 368 | bfd_release (abfd, opthdr); |
252b5132 RH |
369 | } |
370 | ||
371 | return coff_real_object_p (abfd, nscns, &internal_f, | |
372 | (internal_f.f_opthdr != 0 | |
373 | ? &internal_a | |
374 | : (struct internal_aouthdr *) NULL)); | |
375 | } | |
376 | ||
377 | /* Get the BFD section from a COFF symbol section number. */ | |
378 | ||
379 | asection * | |
91d6fa6a | 380 | coff_section_from_bfd_index (bfd *abfd, int section_index) |
252b5132 | 381 | { |
198beae2 | 382 | struct bfd_section *answer = abfd->sections; |
252b5132 | 383 | |
91d6fa6a | 384 | if (section_index == N_ABS) |
252b5132 | 385 | return bfd_abs_section_ptr; |
91d6fa6a | 386 | if (section_index == N_UNDEF) |
252b5132 | 387 | return bfd_und_section_ptr; |
91d6fa6a | 388 | if (section_index == N_DEBUG) |
252b5132 RH |
389 | return bfd_abs_section_ptr; |
390 | ||
391 | while (answer) | |
392 | { | |
91d6fa6a | 393 | if (answer->target_index == section_index) |
252b5132 RH |
394 | return answer; |
395 | answer = answer->next; | |
396 | } | |
397 | ||
398 | /* We should not reach this point, but the SCO 3.2v4 /lib/libc_s.a | |
399 | has a bad symbol table in biglitpow.o. */ | |
400 | return bfd_und_section_ptr; | |
401 | } | |
402 | ||
403 | /* Get the upper bound of a COFF symbol table. */ | |
404 | ||
405 | long | |
c8e7bf0d | 406 | coff_get_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
407 | { |
408 | if (!bfd_coff_slurp_symbol_table (abfd)) | |
409 | return -1; | |
410 | ||
411 | return (bfd_get_symcount (abfd) + 1) * (sizeof (coff_symbol_type *)); | |
412 | } | |
413 | ||
252b5132 RH |
414 | /* Canonicalize a COFF symbol table. */ |
415 | ||
416 | long | |
c8e7bf0d | 417 | coff_canonicalize_symtab (bfd *abfd, asymbol **alocation) |
252b5132 RH |
418 | { |
419 | unsigned int counter; | |
420 | coff_symbol_type *symbase; | |
421 | coff_symbol_type **location = (coff_symbol_type **) alocation; | |
422 | ||
423 | if (!bfd_coff_slurp_symbol_table (abfd)) | |
424 | return -1; | |
425 | ||
426 | symbase = obj_symbols (abfd); | |
427 | counter = bfd_get_symcount (abfd); | |
428 | while (counter-- > 0) | |
429 | *location++ = symbase++; | |
430 | ||
431 | *location = NULL; | |
432 | ||
433 | return bfd_get_symcount (abfd); | |
434 | } | |
435 | ||
436 | /* Get the name of a symbol. The caller must pass in a buffer of size | |
437 | >= SYMNMLEN + 1. */ | |
438 | ||
439 | const char * | |
c8e7bf0d NC |
440 | _bfd_coff_internal_syment_name (bfd *abfd, |
441 | const struct internal_syment *sym, | |
442 | char *buf) | |
252b5132 RH |
443 | { |
444 | /* FIXME: It's not clear this will work correctly if sizeof | |
445 | (_n_zeroes) != 4. */ | |
446 | if (sym->_n._n_n._n_zeroes != 0 | |
447 | || sym->_n._n_n._n_offset == 0) | |
448 | { | |
449 | memcpy (buf, sym->_n._n_name, SYMNMLEN); | |
450 | buf[SYMNMLEN] = '\0'; | |
451 | return buf; | |
452 | } | |
453 | else | |
454 | { | |
455 | const char *strings; | |
456 | ||
457 | BFD_ASSERT (sym->_n._n_n._n_offset >= STRING_SIZE_SIZE); | |
458 | strings = obj_coff_strings (abfd); | |
459 | if (strings == NULL) | |
460 | { | |
461 | strings = _bfd_coff_read_string_table (abfd); | |
462 | if (strings == NULL) | |
463 | return NULL; | |
464 | } | |
465 | return strings + sym->_n._n_n._n_offset; | |
466 | } | |
467 | } | |
468 | ||
469 | /* Read in and swap the relocs. This returns a buffer holding the | |
b34976b6 | 470 | relocs for section SEC in file ABFD. If CACHE is TRUE and |
252b5132 RH |
471 | INTERNAL_RELOCS is NULL, the relocs read in will be saved in case |
472 | the function is called again. If EXTERNAL_RELOCS is not NULL, it | |
473 | is a buffer large enough to hold the unswapped relocs. If | |
474 | INTERNAL_RELOCS is not NULL, it is a buffer large enough to hold | |
b34976b6 | 475 | the swapped relocs. If REQUIRE_INTERNAL is TRUE, then the return |
252b5132 RH |
476 | value must be INTERNAL_RELOCS. The function returns NULL on error. */ |
477 | ||
478 | struct internal_reloc * | |
c8e7bf0d NC |
479 | _bfd_coff_read_internal_relocs (bfd *abfd, |
480 | asection *sec, | |
481 | bfd_boolean cache, | |
482 | bfd_byte *external_relocs, | |
483 | bfd_boolean require_internal, | |
484 | struct internal_reloc *internal_relocs) | |
252b5132 RH |
485 | { |
486 | bfd_size_type relsz; | |
487 | bfd_byte *free_external = NULL; | |
488 | struct internal_reloc *free_internal = NULL; | |
489 | bfd_byte *erel; | |
490 | bfd_byte *erel_end; | |
491 | struct internal_reloc *irel; | |
dc810e39 | 492 | bfd_size_type amt; |
252b5132 | 493 | |
9d7038d3 MS |
494 | if (sec->reloc_count == 0) |
495 | return internal_relocs; /* Nothing to do. */ | |
496 | ||
252b5132 RH |
497 | if (coff_section_data (abfd, sec) != NULL |
498 | && coff_section_data (abfd, sec)->relocs != NULL) | |
499 | { | |
500 | if (! require_internal) | |
501 | return coff_section_data (abfd, sec)->relocs; | |
502 | memcpy (internal_relocs, coff_section_data (abfd, sec)->relocs, | |
503 | sec->reloc_count * sizeof (struct internal_reloc)); | |
504 | return internal_relocs; | |
505 | } | |
506 | ||
507 | relsz = bfd_coff_relsz (abfd); | |
508 | ||
dc810e39 | 509 | amt = sec->reloc_count * relsz; |
252b5132 RH |
510 | if (external_relocs == NULL) |
511 | { | |
a50b1753 | 512 | free_external = (bfd_byte *) bfd_malloc (amt); |
9d7038d3 | 513 | if (free_external == NULL) |
252b5132 RH |
514 | goto error_return; |
515 | external_relocs = free_external; | |
516 | } | |
517 | ||
518 | if (bfd_seek (abfd, sec->rel_filepos, SEEK_SET) != 0 | |
dc810e39 | 519 | || bfd_bread (external_relocs, amt, abfd) != amt) |
252b5132 RH |
520 | goto error_return; |
521 | ||
522 | if (internal_relocs == NULL) | |
523 | { | |
dc810e39 AM |
524 | amt = sec->reloc_count; |
525 | amt *= sizeof (struct internal_reloc); | |
a50b1753 | 526 | free_internal = (struct internal_reloc *) bfd_malloc (amt); |
9d7038d3 | 527 | if (free_internal == NULL) |
252b5132 RH |
528 | goto error_return; |
529 | internal_relocs = free_internal; | |
530 | } | |
531 | ||
532 | /* Swap in the relocs. */ | |
533 | erel = external_relocs; | |
534 | erel_end = erel + relsz * sec->reloc_count; | |
535 | irel = internal_relocs; | |
536 | for (; erel < erel_end; erel += relsz, irel++) | |
c8e7bf0d | 537 | bfd_coff_swap_reloc_in (abfd, (void *) erel, (void *) irel); |
252b5132 RH |
538 | |
539 | if (free_external != NULL) | |
540 | { | |
541 | free (free_external); | |
542 | free_external = NULL; | |
543 | } | |
544 | ||
9ee2139f | 545 | if (cache && free_internal != NULL) |
252b5132 | 546 | { |
9ee2139f | 547 | if (coff_section_data (abfd, sec) == NULL) |
252b5132 | 548 | { |
9ee2139f MS |
549 | amt = sizeof (struct coff_section_tdata); |
550 | sec->used_by_bfd = bfd_zalloc (abfd, amt); | |
551 | if (sec->used_by_bfd == NULL) | |
552 | goto error_return; | |
553 | coff_section_data (abfd, sec)->contents = NULL; | |
252b5132 | 554 | } |
9ee2139f | 555 | coff_section_data (abfd, sec)->relocs = free_internal; |
252b5132 RH |
556 | } |
557 | ||
558 | return internal_relocs; | |
559 | ||
560 | error_return: | |
561 | if (free_external != NULL) | |
562 | free (free_external); | |
563 | if (free_internal != NULL) | |
564 | free (free_internal); | |
565 | return NULL; | |
566 | } | |
567 | ||
568 | /* Set lineno_count for the output sections of a COFF file. */ | |
569 | ||
570 | int | |
c8e7bf0d | 571 | coff_count_linenumbers (bfd *abfd) |
252b5132 RH |
572 | { |
573 | unsigned int limit = bfd_get_symcount (abfd); | |
574 | unsigned int i; | |
575 | int total = 0; | |
576 | asymbol **p; | |
577 | asection *s; | |
578 | ||
579 | if (limit == 0) | |
580 | { | |
581 | /* This may be from the backend linker, in which case the | |
582 | lineno_count in the sections is correct. */ | |
583 | for (s = abfd->sections; s != NULL; s = s->next) | |
584 | total += s->lineno_count; | |
585 | return total; | |
586 | } | |
587 | ||
588 | for (s = abfd->sections; s != NULL; s = s->next) | |
589 | BFD_ASSERT (s->lineno_count == 0); | |
590 | ||
591 | for (p = abfd->outsymbols, i = 0; i < limit; i++, p++) | |
592 | { | |
593 | asymbol *q_maybe = *p; | |
594 | ||
9bd09e22 | 595 | if (bfd_family_coff (bfd_asymbol_bfd (q_maybe))) |
252b5132 RH |
596 | { |
597 | coff_symbol_type *q = coffsymbol (q_maybe); | |
598 | ||
599 | /* The AIX 4.1 compiler can sometimes generate line numbers | |
600 | attached to debugging symbols. We try to simply ignore | |
601 | those here. */ | |
602 | if (q->lineno != NULL | |
603 | && q->symbol.section->owner != NULL) | |
604 | { | |
605 | /* This symbol has line numbers. Increment the owning | |
606 | section's linenumber count. */ | |
607 | alent *l = q->lineno; | |
608 | ||
84c254c6 | 609 | do |
252b5132 | 610 | { |
84c254c6 | 611 | asection * sec = q->symbol.section->output_section; |
b34976b6 | 612 | |
84c254c6 NC |
613 | /* Do not try to update fields in read-only sections. */ |
614 | if (! bfd_is_const_section (sec)) | |
615 | sec->lineno_count ++; | |
616 | ||
252b5132 | 617 | ++total; |
252b5132 RH |
618 | ++l; |
619 | } | |
84c254c6 | 620 | while (l->line_number != 0); |
252b5132 RH |
621 | } |
622 | } | |
623 | } | |
624 | ||
625 | return total; | |
626 | } | |
627 | ||
628 | /* Takes a bfd and a symbol, returns a pointer to the coff specific | |
629 | area of the symbol if there is one. */ | |
630 | ||
252b5132 | 631 | coff_symbol_type * |
c8e7bf0d NC |
632 | coff_symbol_from (bfd *ignore_abfd ATTRIBUTE_UNUSED, |
633 | asymbol *symbol) | |
252b5132 | 634 | { |
9bd09e22 | 635 | if (!bfd_family_coff (bfd_asymbol_bfd (symbol))) |
252b5132 RH |
636 | return (coff_symbol_type *) NULL; |
637 | ||
638 | if (bfd_asymbol_bfd (symbol)->tdata.coff_obj_data == (coff_data_type *) NULL) | |
639 | return (coff_symbol_type *) NULL; | |
640 | ||
641 | return (coff_symbol_type *) symbol; | |
642 | } | |
643 | ||
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. */ |
ac38308c MS |
650 | if (coff_symbol_ptr->symbol.section |
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)) | |
34cbe64e TW |
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 | { | |
760 | coff_symbol_type *coff_symbol_ptr = coff_symbol_from (bfd_ptr, symbol_ptr_ptr[symbol_index]); | |
244148ad | 761 | symbol_ptr_ptr[symbol_index]->udata.i = symbol_index; |
252b5132 RH |
762 | if (coff_symbol_ptr && coff_symbol_ptr->native) |
763 | { | |
764 | combined_entry_type *s = coff_symbol_ptr->native; | |
765 | int i; | |
766 | ||
767 | if (s->u.syment.n_sclass == C_FILE) | |
768 | { | |
c8e7bf0d | 769 | if (last_file != NULL) |
252b5132 RH |
770 | last_file->n_value = native_index; |
771 | last_file = &(s->u.syment); | |
772 | } | |
773 | else | |
c8e7bf0d NC |
774 | /* Modify the symbol values according to their section and |
775 | type. */ | |
776 | fixup_symbol_value (bfd_ptr, coff_symbol_ptr, &(s->u.syment)); | |
252b5132 | 777 | |
252b5132 RH |
778 | for (i = 0; i < s->u.syment.n_numaux + 1; i++) |
779 | s[i].offset = native_index++; | |
780 | } | |
781 | else | |
c8e7bf0d | 782 | native_index++; |
252b5132 | 783 | } |
c8e7bf0d | 784 | |
252b5132 RH |
785 | obj_conv_table_size (bfd_ptr) = native_index; |
786 | ||
b34976b6 | 787 | return TRUE; |
252b5132 RH |
788 | } |
789 | ||
790 | /* Run thorough the symbol table again, and fix it so that all | |
791 | pointers to entries are changed to the entries' index in the output | |
792 | symbol table. */ | |
793 | ||
794 | void | |
c8e7bf0d | 795 | coff_mangle_symbols (bfd *bfd_ptr) |
252b5132 RH |
796 | { |
797 | unsigned int symbol_count = bfd_get_symcount (bfd_ptr); | |
798 | asymbol **symbol_ptr_ptr = bfd_ptr->outsymbols; | |
799 | unsigned int symbol_index; | |
800 | ||
801 | for (symbol_index = 0; symbol_index < symbol_count; symbol_index++) | |
802 | { | |
803 | coff_symbol_type *coff_symbol_ptr = | |
804 | coff_symbol_from (bfd_ptr, symbol_ptr_ptr[symbol_index]); | |
805 | ||
806 | if (coff_symbol_ptr && coff_symbol_ptr->native) | |
807 | { | |
808 | int i; | |
809 | combined_entry_type *s = coff_symbol_ptr->native; | |
810 | ||
811 | if (s->fix_value) | |
812 | { | |
813 | /* FIXME: We should use a union here. */ | |
dc810e39 | 814 | s->u.syment.n_value = |
d2df793a NC |
815 | (bfd_hostptr_t) ((combined_entry_type *) |
816 | ((bfd_hostptr_t) s->u.syment.n_value))->offset; | |
252b5132 RH |
817 | s->fix_value = 0; |
818 | } | |
819 | if (s->fix_line) | |
820 | { | |
821 | /* The value is the offset into the line number entries | |
822 | for the symbol's section. On output, the symbol's | |
823 | section should be N_DEBUG. */ | |
824 | s->u.syment.n_value = | |
825 | (coff_symbol_ptr->symbol.section->output_section->line_filepos | |
826 | + s->u.syment.n_value * bfd_coff_linesz (bfd_ptr)); | |
827 | coff_symbol_ptr->symbol.section = | |
828 | coff_section_from_bfd_index (bfd_ptr, N_DEBUG); | |
829 | BFD_ASSERT (coff_symbol_ptr->symbol.flags & BSF_DEBUGGING); | |
830 | } | |
831 | for (i = 0; i < s->u.syment.n_numaux; i++) | |
832 | { | |
833 | combined_entry_type *a = s + i + 1; | |
834 | if (a->fix_tag) | |
835 | { | |
836 | a->u.auxent.x_sym.x_tagndx.l = | |
837 | a->u.auxent.x_sym.x_tagndx.p->offset; | |
838 | a->fix_tag = 0; | |
839 | } | |
840 | if (a->fix_end) | |
841 | { | |
842 | a->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l = | |
843 | a->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p->offset; | |
844 | a->fix_end = 0; | |
845 | } | |
846 | if (a->fix_scnlen) | |
847 | { | |
848 | a->u.auxent.x_csect.x_scnlen.l = | |
849 | a->u.auxent.x_csect.x_scnlen.p->offset; | |
850 | a->fix_scnlen = 0; | |
851 | } | |
852 | } | |
853 | } | |
854 | } | |
855 | } | |
856 | ||
857 | static void | |
c8e7bf0d NC |
858 | coff_fix_symbol_name (bfd *abfd, |
859 | asymbol *symbol, | |
860 | combined_entry_type *native, | |
861 | bfd_size_type *string_size_p, | |
862 | asection **debug_string_section_p, | |
863 | bfd_size_type *debug_string_size_p) | |
252b5132 RH |
864 | { |
865 | unsigned int name_length; | |
866 | union internal_auxent *auxent; | |
867 | char *name = (char *) (symbol->name); | |
868 | ||
c8e7bf0d | 869 | if (name == NULL) |
252b5132 | 870 | { |
c8e7bf0d | 871 | /* COFF symbols always have names, so we'll make one up. */ |
252b5132 RH |
872 | symbol->name = "strange"; |
873 | name = (char *) symbol->name; | |
874 | } | |
875 | name_length = strlen (name); | |
876 | ||
877 | if (native->u.syment.n_sclass == C_FILE | |
878 | && native->u.syment.n_numaux > 0) | |
879 | { | |
692b7d62 ILT |
880 | unsigned int filnmlen; |
881 | ||
7f6d05e8 CP |
882 | if (bfd_coff_force_symnames_in_strings (abfd)) |
883 | { | |
244148ad | 884 | native->u.syment._n._n_n._n_offset = |
7f6d05e8 CP |
885 | (*string_size_p + STRING_SIZE_SIZE); |
886 | native->u.syment._n._n_n._n_zeroes = 0; | |
887 | *string_size_p += 6; /* strlen(".file") + 1 */ | |
888 | } | |
889 | else | |
890 | strncpy (native->u.syment._n._n_name, ".file", SYMNMLEN); | |
891 | ||
252b5132 RH |
892 | auxent = &(native + 1)->u.auxent; |
893 | ||
692b7d62 ILT |
894 | filnmlen = bfd_coff_filnmlen (abfd); |
895 | ||
252b5132 RH |
896 | if (bfd_coff_long_filenames (abfd)) |
897 | { | |
692b7d62 | 898 | if (name_length <= filnmlen) |
c8e7bf0d | 899 | strncpy (auxent->x_file.x_fname, name, filnmlen); |
252b5132 RH |
900 | else |
901 | { | |
902 | auxent->x_file.x_n.x_offset = *string_size_p + STRING_SIZE_SIZE; | |
903 | auxent->x_file.x_n.x_zeroes = 0; | |
904 | *string_size_p += name_length + 1; | |
905 | } | |
906 | } | |
907 | else | |
908 | { | |
692b7d62 ILT |
909 | strncpy (auxent->x_file.x_fname, name, filnmlen); |
910 | if (name_length > filnmlen) | |
911 | name[filnmlen] = '\0'; | |
252b5132 RH |
912 | } |
913 | } | |
914 | else | |
915 | { | |
7f6d05e8 | 916 | if (name_length <= SYMNMLEN && !bfd_coff_force_symnames_in_strings (abfd)) |
c8e7bf0d NC |
917 | /* This name will fit into the symbol neatly. */ |
918 | strncpy (native->u.syment._n._n_name, symbol->name, SYMNMLEN); | |
919 | ||
252b5132 RH |
920 | else if (!bfd_coff_symname_in_debug (abfd, &native->u.syment)) |
921 | { | |
922 | native->u.syment._n._n_n._n_offset = (*string_size_p | |
923 | + STRING_SIZE_SIZE); | |
924 | native->u.syment._n._n_n._n_zeroes = 0; | |
925 | *string_size_p += name_length + 1; | |
926 | } | |
927 | else | |
928 | { | |
dc810e39 | 929 | file_ptr filepos; |
7f6d05e8 CP |
930 | bfd_byte buf[4]; |
931 | int prefix_len = bfd_coff_debug_string_prefix_length (abfd); | |
252b5132 RH |
932 | |
933 | /* This name should be written into the .debug section. For | |
934 | some reason each name is preceded by a two byte length | |
935 | and also followed by a null byte. FIXME: We assume that | |
936 | the .debug section has already been created, and that it | |
937 | is large enough. */ | |
938 | if (*debug_string_section_p == (asection *) NULL) | |
939 | *debug_string_section_p = bfd_get_section_by_name (abfd, ".debug"); | |
940 | filepos = bfd_tell (abfd); | |
7f6d05e8 | 941 | if (prefix_len == 4) |
dc810e39 | 942 | bfd_put_32 (abfd, (bfd_vma) (name_length + 1), buf); |
7f6d05e8 | 943 | else |
dc810e39 | 944 | bfd_put_16 (abfd, (bfd_vma) (name_length + 1), buf); |
7f6d05e8 | 945 | |
252b5132 RH |
946 | if (!bfd_set_section_contents (abfd, |
947 | *debug_string_section_p, | |
c8e7bf0d | 948 | (void *) buf, |
252b5132 | 949 | (file_ptr) *debug_string_size_p, |
7f6d05e8 | 950 | (bfd_size_type) prefix_len) |
252b5132 RH |
951 | || !bfd_set_section_contents (abfd, |
952 | *debug_string_section_p, | |
c8e7bf0d | 953 | (void *) symbol->name, |
dc810e39 AM |
954 | (file_ptr) (*debug_string_size_p |
955 | + prefix_len), | |
252b5132 RH |
956 | (bfd_size_type) name_length + 1)) |
957 | abort (); | |
958 | if (bfd_seek (abfd, filepos, SEEK_SET) != 0) | |
959 | abort (); | |
244148ad | 960 | native->u.syment._n._n_n._n_offset = |
7f6d05e8 | 961 | *debug_string_size_p + prefix_len; |
252b5132 | 962 | native->u.syment._n._n_n._n_zeroes = 0; |
7f6d05e8 | 963 | *debug_string_size_p += name_length + 1 + prefix_len; |
252b5132 RH |
964 | } |
965 | } | |
966 | } | |
967 | ||
968 | /* We need to keep track of the symbol index so that when we write out | |
969 | the relocs we can get the index for a symbol. This method is a | |
970 | hack. FIXME. */ | |
971 | ||
972 | #define set_index(symbol, idx) ((symbol)->udata.i = (idx)) | |
973 | ||
974 | /* Write a symbol out to a COFF file. */ | |
975 | ||
b34976b6 | 976 | static bfd_boolean |
c8e7bf0d NC |
977 | coff_write_symbol (bfd *abfd, |
978 | asymbol *symbol, | |
979 | combined_entry_type *native, | |
980 | bfd_vma *written, | |
981 | bfd_size_type *string_size_p, | |
982 | asection **debug_string_section_p, | |
983 | bfd_size_type *debug_string_size_p) | |
252b5132 RH |
984 | { |
985 | unsigned int numaux = native->u.syment.n_numaux; | |
986 | int type = native->u.syment.n_type; | |
a50b1753 | 987 | int n_sclass = (int) native->u.syment.n_sclass; |
88e59394 DK |
988 | asection *output_section = symbol->section->output_section |
989 | ? symbol->section->output_section | |
990 | : symbol->section; | |
c8e7bf0d | 991 | void * buf; |
252b5132 RH |
992 | bfd_size_type symesz; |
993 | ||
994 | if (native->u.syment.n_sclass == C_FILE) | |
995 | symbol->flags |= BSF_DEBUGGING; | |
996 | ||
997 | if (symbol->flags & BSF_DEBUGGING | |
998 | && bfd_is_abs_section (symbol->section)) | |
c8e7bf0d NC |
999 | native->u.syment.n_scnum = N_DEBUG; |
1000 | ||
252b5132 | 1001 | else if (bfd_is_abs_section (symbol->section)) |
c8e7bf0d NC |
1002 | native->u.syment.n_scnum = N_ABS; |
1003 | ||
252b5132 | 1004 | else if (bfd_is_und_section (symbol->section)) |
c8e7bf0d NC |
1005 | native->u.syment.n_scnum = N_UNDEF; |
1006 | ||
252b5132 | 1007 | else |
c8e7bf0d | 1008 | native->u.syment.n_scnum = |
88e59394 | 1009 | output_section->target_index; |
252b5132 RH |
1010 | |
1011 | coff_fix_symbol_name (abfd, symbol, native, string_size_p, | |
1012 | debug_string_section_p, debug_string_size_p); | |
1013 | ||
1014 | symesz = bfd_coff_symesz (abfd); | |
1015 | buf = bfd_alloc (abfd, symesz); | |
1016 | if (!buf) | |
b34976b6 | 1017 | return FALSE; |
252b5132 | 1018 | bfd_coff_swap_sym_out (abfd, &native->u.syment, buf); |
dc810e39 | 1019 | if (bfd_bwrite (buf, symesz, abfd) != symesz) |
b34976b6 | 1020 | return FALSE; |
252b5132 RH |
1021 | bfd_release (abfd, buf); |
1022 | ||
1023 | if (native->u.syment.n_numaux > 0) | |
1024 | { | |
1025 | bfd_size_type auxesz; | |
1026 | unsigned int j; | |
1027 | ||
1028 | auxesz = bfd_coff_auxesz (abfd); | |
1029 | buf = bfd_alloc (abfd, auxesz); | |
1030 | if (!buf) | |
b34976b6 | 1031 | return FALSE; |
252b5132 RH |
1032 | for (j = 0; j < native->u.syment.n_numaux; j++) |
1033 | { | |
1034 | bfd_coff_swap_aux_out (abfd, | |
1035 | &((native + j + 1)->u.auxent), | |
96d56e9f | 1036 | type, n_sclass, (int) j, |
252b5132 RH |
1037 | native->u.syment.n_numaux, |
1038 | buf); | |
dc810e39 | 1039 | if (bfd_bwrite (buf, auxesz, abfd) != auxesz) |
b34976b6 | 1040 | return FALSE; |
252b5132 RH |
1041 | } |
1042 | bfd_release (abfd, buf); | |
1043 | } | |
1044 | ||
1045 | /* Store the index for use when we write out the relocs. */ | |
1046 | set_index (symbol, *written); | |
1047 | ||
1048 | *written += numaux + 1; | |
b34976b6 | 1049 | return TRUE; |
252b5132 RH |
1050 | } |
1051 | ||
1052 | /* Write out a symbol to a COFF file that does not come from a COFF | |
1053 | file originally. This symbol may have been created by the linker, | |
1054 | or we may be linking a non COFF file to a COFF file. */ | |
1055 | ||
e7ebb214 | 1056 | bfd_boolean |
c8e7bf0d NC |
1057 | coff_write_alien_symbol (bfd *abfd, |
1058 | asymbol *symbol, | |
e7ebb214 | 1059 | struct internal_syment *isym, |
c8e7bf0d NC |
1060 | bfd_vma *written, |
1061 | bfd_size_type *string_size_p, | |
1062 | asection **debug_string_section_p, | |
1063 | bfd_size_type *debug_string_size_p) | |
252b5132 RH |
1064 | { |
1065 | combined_entry_type *native; | |
e7ebb214 | 1066 | combined_entry_type dummy[2]; |
88e59394 DK |
1067 | asection *output_section = symbol->section->output_section |
1068 | ? symbol->section->output_section | |
1069 | : symbol->section; | |
07c7ed6d | 1070 | struct bfd_link_info *link_info = coff_data (abfd)->link_info; |
e7ebb214 | 1071 | bfd_boolean ret; |
252b5132 | 1072 | |
07c7ed6d KT |
1073 | if ((!link_info || link_info->strip_discarded) |
1074 | && !bfd_is_abs_section (symbol->section) | |
1075 | && symbol->section->output_section == bfd_abs_section_ptr) | |
1076 | { | |
1077 | symbol->name = ""; | |
e7ebb214 JB |
1078 | if (isym != NULL) |
1079 | memset (isym, 0, sizeof(*isym)); | |
07c7ed6d KT |
1080 | return TRUE; |
1081 | } | |
e7ebb214 | 1082 | native = dummy; |
252b5132 RH |
1083 | native->u.syment.n_type = T_NULL; |
1084 | native->u.syment.n_flags = 0; | |
e7ebb214 | 1085 | native->u.syment.n_numaux = 0; |
252b5132 RH |
1086 | if (bfd_is_und_section (symbol->section)) |
1087 | { | |
1088 | native->u.syment.n_scnum = N_UNDEF; | |
1089 | native->u.syment.n_value = symbol->value; | |
1090 | } | |
1091 | else if (bfd_is_com_section (symbol->section)) | |
1092 | { | |
1093 | native->u.syment.n_scnum = N_UNDEF; | |
1094 | native->u.syment.n_value = symbol->value; | |
1095 | } | |
e7ebb214 JB |
1096 | else if (symbol->flags & BSF_FILE) |
1097 | { | |
1098 | native->u.syment.n_scnum = N_DEBUG; | |
1099 | native->u.syment.n_numaux = 1; | |
1100 | } | |
252b5132 RH |
1101 | else if (symbol->flags & BSF_DEBUGGING) |
1102 | { | |
1103 | /* There isn't much point to writing out a debugging symbol | |
1104 | unless we are prepared to convert it into COFF debugging | |
1105 | format. So, we just ignore them. We must clobber the symbol | |
1106 | name to keep it from being put in the string table. */ | |
1107 | symbol->name = ""; | |
e7ebb214 JB |
1108 | if (isym != NULL) |
1109 | memset (isym, 0, sizeof(*isym)); | |
b34976b6 | 1110 | return TRUE; |
252b5132 RH |
1111 | } |
1112 | else | |
1113 | { | |
88e59394 | 1114 | native->u.syment.n_scnum = output_section->target_index; |
252b5132 RH |
1115 | native->u.syment.n_value = (symbol->value |
1116 | + symbol->section->output_offset); | |
1117 | if (! obj_pe (abfd)) | |
88e59394 | 1118 | native->u.syment.n_value += output_section->vma; |
252b5132 | 1119 | |
08da05b0 | 1120 | /* Copy the any flags from the file header into the symbol. |
252b5132 RH |
1121 | FIXME: Why? */ |
1122 | { | |
1123 | coff_symbol_type *c = coff_symbol_from (abfd, symbol); | |
1124 | if (c != (coff_symbol_type *) NULL) | |
1125 | native->u.syment.n_flags = bfd_asymbol_bfd (&c->symbol)->flags; | |
1126 | } | |
1127 | } | |
1128 | ||
1129 | native->u.syment.n_type = 0; | |
e7ebb214 JB |
1130 | if (symbol->flags & BSF_FILE) |
1131 | native->u.syment.n_sclass = C_FILE; | |
1132 | else if (symbol->flags & BSF_LOCAL) | |
252b5132 RH |
1133 | native->u.syment.n_sclass = C_STAT; |
1134 | else if (symbol->flags & BSF_WEAK) | |
1135 | native->u.syment.n_sclass = obj_pe (abfd) ? C_NT_WEAK : C_WEAKEXT; | |
1136 | else | |
1137 | native->u.syment.n_sclass = C_EXT; | |
252b5132 | 1138 | |
e7ebb214 JB |
1139 | ret = coff_write_symbol (abfd, symbol, native, written, string_size_p, |
1140 | debug_string_section_p, debug_string_size_p); | |
1141 | if (isym != NULL) | |
1142 | *isym = native->u.syment; | |
1143 | return ret; | |
252b5132 RH |
1144 | } |
1145 | ||
1146 | /* Write a native symbol to a COFF file. */ | |
1147 | ||
b34976b6 | 1148 | static bfd_boolean |
c8e7bf0d NC |
1149 | coff_write_native_symbol (bfd *abfd, |
1150 | coff_symbol_type *symbol, | |
1151 | bfd_vma *written, | |
1152 | bfd_size_type *string_size_p, | |
1153 | asection **debug_string_section_p, | |
1154 | bfd_size_type *debug_string_size_p) | |
252b5132 RH |
1155 | { |
1156 | combined_entry_type *native = symbol->native; | |
1157 | alent *lineno = symbol->lineno; | |
07c7ed6d KT |
1158 | struct bfd_link_info *link_info = coff_data (abfd)->link_info; |
1159 | ||
1160 | if ((!link_info || link_info->strip_discarded) | |
1161 | && !bfd_is_abs_section (symbol->symbol.section) | |
1162 | && symbol->symbol.section->output_section == bfd_abs_section_ptr) | |
1163 | { | |
1164 | symbol->symbol.name = ""; | |
1165 | return TRUE; | |
1166 | } | |
252b5132 RH |
1167 | |
1168 | /* If this symbol has an associated line number, we must store the | |
1169 | symbol index in the line number field. We also tag the auxent to | |
1170 | point to the right place in the lineno table. */ | |
1171 | if (lineno && !symbol->done_lineno && symbol->symbol.section->owner != NULL) | |
1172 | { | |
1173 | unsigned int count = 0; | |
c8e7bf0d | 1174 | |
252b5132 RH |
1175 | lineno[count].u.offset = *written; |
1176 | if (native->u.syment.n_numaux) | |
1177 | { | |
1178 | union internal_auxent *a = &((native + 1)->u.auxent); | |
1179 | ||
1180 | a->x_sym.x_fcnary.x_fcn.x_lnnoptr = | |
1181 | symbol->symbol.section->output_section->moving_line_filepos; | |
1182 | } | |
1183 | ||
1184 | /* Count and relocate all other linenumbers. */ | |
1185 | count++; | |
1186 | while (lineno[count].line_number != 0) | |
1187 | { | |
252b5132 RH |
1188 | lineno[count].u.offset += |
1189 | (symbol->symbol.section->output_section->vma | |
1190 | + symbol->symbol.section->output_offset); | |
252b5132 RH |
1191 | count++; |
1192 | } | |
b34976b6 | 1193 | symbol->done_lineno = TRUE; |
252b5132 | 1194 | |
84c254c6 NC |
1195 | if (! bfd_is_const_section (symbol->symbol.section->output_section)) |
1196 | symbol->symbol.section->output_section->moving_line_filepos += | |
1197 | count * bfd_coff_linesz (abfd); | |
252b5132 RH |
1198 | } |
1199 | ||
1200 | return coff_write_symbol (abfd, &(symbol->symbol), native, written, | |
1201 | string_size_p, debug_string_section_p, | |
1202 | debug_string_size_p); | |
1203 | } | |
1204 | ||
e144674a NC |
1205 | static void |
1206 | null_error_handler (const char * fmt ATTRIBUTE_UNUSED, ...) | |
1207 | { | |
1208 | } | |
1209 | ||
252b5132 RH |
1210 | /* Write out the COFF symbols. */ |
1211 | ||
b34976b6 | 1212 | bfd_boolean |
c8e7bf0d | 1213 | coff_write_symbols (bfd *abfd) |
252b5132 RH |
1214 | { |
1215 | bfd_size_type string_size; | |
1216 | asection *debug_string_section; | |
1217 | bfd_size_type debug_string_size; | |
1218 | unsigned int i; | |
1219 | unsigned int limit = bfd_get_symcount (abfd); | |
f075ee0c | 1220 | bfd_vma written = 0; |
252b5132 RH |
1221 | asymbol **p; |
1222 | ||
1223 | string_size = 0; | |
1224 | debug_string_section = NULL; | |
1225 | debug_string_size = 0; | |
1226 | ||
1227 | /* If this target supports long section names, they must be put into | |
1228 | the string table. This is supported by PE. This code must | |
1229 | handle section names just as they are handled in | |
1230 | coff_write_object_contents. */ | |
1231 | if (bfd_coff_long_section_names (abfd)) | |
1232 | { | |
1233 | asection *o; | |
1234 | ||
1235 | for (o = abfd->sections; o != NULL; o = o->next) | |
1236 | { | |
1237 | size_t len; | |
1238 | ||
1239 | len = strlen (o->name); | |
1240 | if (len > SCNNMLEN) | |
1241 | string_size += len + 1; | |
1242 | } | |
1243 | } | |
1244 | ||
c8e7bf0d | 1245 | /* Seek to the right place. */ |
252b5132 | 1246 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0) |
b34976b6 | 1247 | return FALSE; |
252b5132 | 1248 | |
c8e7bf0d | 1249 | /* Output all the symbols we have. */ |
252b5132 RH |
1250 | written = 0; |
1251 | for (p = abfd->outsymbols, i = 0; i < limit; i++, p++) | |
1252 | { | |
1253 | asymbol *symbol = *p; | |
1254 | coff_symbol_type *c_symbol = coff_symbol_from (abfd, symbol); | |
1255 | ||
1256 | if (c_symbol == (coff_symbol_type *) NULL | |
1257 | || c_symbol->native == (combined_entry_type *) NULL) | |
1258 | { | |
e7ebb214 JB |
1259 | if (!coff_write_alien_symbol (abfd, symbol, NULL, &written, |
1260 | &string_size, &debug_string_section, | |
252b5132 | 1261 | &debug_string_size)) |
b34976b6 | 1262 | return FALSE; |
252b5132 RH |
1263 | } |
1264 | else | |
1265 | { | |
e144674a NC |
1266 | if (coff_backend_info (abfd)->_bfd_coff_classify_symbol != NULL) |
1267 | { | |
1268 | bfd_error_handler_type current_error_handler; | |
96d56e9f | 1269 | enum coff_symbol_classification sym_class; |
e144674a NC |
1270 | unsigned char *n_sclass; |
1271 | ||
1272 | /* Suppress error reporting by bfd_coff_classify_symbol. | |
1273 | Error messages can be generated when we are processing a local | |
1274 | symbol which has no associated section and we do not have to | |
1275 | worry about this, all we need to know is that it is local. */ | |
1276 | current_error_handler = bfd_set_error_handler (null_error_handler); | |
96d56e9f NC |
1277 | sym_class = bfd_coff_classify_symbol (abfd, |
1278 | &c_symbol->native->u.syment); | |
e144674a | 1279 | (void) bfd_set_error_handler (current_error_handler); |
96d56e9f | 1280 | |
e144674a NC |
1281 | n_sclass = &c_symbol->native->u.syment.n_sclass; |
1282 | ||
1283 | /* If the symbol class has been changed (eg objcopy/ld script/etc) | |
1284 | we cannot retain the existing sclass from the original symbol. | |
1285 | Weak symbols only have one valid sclass, so just set it always. | |
1286 | If it is not local class and should be, set it C_STAT. | |
1287 | If it is global and not classified as global, or if it is | |
1288 | weak (which is also classified as global), set it C_EXT. */ | |
1289 | ||
1290 | if (symbol->flags & BSF_WEAK) | |
1291 | *n_sclass = obj_pe (abfd) ? C_NT_WEAK : C_WEAKEXT; | |
96d56e9f | 1292 | else if (symbol->flags & BSF_LOCAL && sym_class != COFF_SYMBOL_LOCAL) |
e144674a NC |
1293 | *n_sclass = C_STAT; |
1294 | else if (symbol->flags & BSF_GLOBAL | |
96d56e9f | 1295 | && (sym_class != COFF_SYMBOL_GLOBAL |
e144674a NC |
1296 | #ifdef COFF_WITH_PE |
1297 | || *n_sclass == C_NT_WEAK | |
1298 | #endif | |
1299 | || *n_sclass == C_WEAKEXT)) | |
1300 | c_symbol->native->u.syment.n_sclass = C_EXT; | |
1301 | } | |
1302 | ||
252b5132 RH |
1303 | if (!coff_write_native_symbol (abfd, c_symbol, &written, |
1304 | &string_size, &debug_string_section, | |
1305 | &debug_string_size)) | |
b34976b6 | 1306 | return FALSE; |
252b5132 RH |
1307 | } |
1308 | } | |
1309 | ||
1310 | obj_raw_syment_count (abfd) = written; | |
1311 | ||
c8e7bf0d | 1312 | /* Now write out strings. */ |
252b5132 RH |
1313 | if (string_size != 0) |
1314 | { | |
1315 | unsigned int size = string_size + STRING_SIZE_SIZE; | |
1316 | bfd_byte buffer[STRING_SIZE_SIZE]; | |
1317 | ||
1318 | #if STRING_SIZE_SIZE == 4 | |
dc810e39 | 1319 | H_PUT_32 (abfd, size, buffer); |
252b5132 | 1320 | #else |
dc810e39 | 1321 | #error Change H_PUT_32 |
252b5132 | 1322 | #endif |
c8e7bf0d | 1323 | if (bfd_bwrite ((void *) buffer, (bfd_size_type) sizeof (buffer), abfd) |
dc810e39 | 1324 | != sizeof (buffer)) |
b34976b6 | 1325 | return FALSE; |
252b5132 RH |
1326 | |
1327 | /* Handle long section names. This code must handle section | |
1328 | names just as they are handled in coff_write_object_contents. */ | |
1329 | if (bfd_coff_long_section_names (abfd)) | |
1330 | { | |
1331 | asection *o; | |
1332 | ||
1333 | for (o = abfd->sections; o != NULL; o = o->next) | |
1334 | { | |
1335 | size_t len; | |
1336 | ||
1337 | len = strlen (o->name); | |
1338 | if (len > SCNNMLEN) | |
1339 | { | |
dc810e39 AM |
1340 | if (bfd_bwrite (o->name, (bfd_size_type) (len + 1), abfd) |
1341 | != len + 1) | |
b34976b6 | 1342 | return FALSE; |
252b5132 RH |
1343 | } |
1344 | } | |
1345 | } | |
1346 | ||
1347 | for (p = abfd->outsymbols, i = 0; | |
1348 | i < limit; | |
1349 | i++, p++) | |
1350 | { | |
1351 | asymbol *q = *p; | |
1352 | size_t name_length = strlen (q->name); | |
1353 | coff_symbol_type *c_symbol = coff_symbol_from (abfd, q); | |
1354 | size_t maxlen; | |
1355 | ||
1356 | /* Figure out whether the symbol name should go in the string | |
1357 | table. Symbol names that are short enough are stored | |
1358 | directly in the syment structure. File names permit a | |
1359 | different, longer, length in the syment structure. On | |
1360 | XCOFF, some symbol names are stored in the .debug section | |
1361 | rather than in the string table. */ | |
1362 | ||
1363 | if (c_symbol == NULL | |
1364 | || c_symbol->native == NULL) | |
c8e7bf0d NC |
1365 | /* This is not a COFF symbol, so it certainly is not a |
1366 | file name, nor does it go in the .debug section. */ | |
1367 | maxlen = bfd_coff_force_symnames_in_strings (abfd) ? 0 : SYMNMLEN; | |
1368 | ||
252b5132 RH |
1369 | else if (bfd_coff_symname_in_debug (abfd, |
1370 | &c_symbol->native->u.syment)) | |
c8e7bf0d NC |
1371 | /* This symbol name is in the XCOFF .debug section. |
1372 | Don't write it into the string table. */ | |
1373 | maxlen = name_length; | |
1374 | ||
252b5132 RH |
1375 | else if (c_symbol->native->u.syment.n_sclass == C_FILE |
1376 | && c_symbol->native->u.syment.n_numaux > 0) | |
7f6d05e8 | 1377 | { |
244148ad | 1378 | if (bfd_coff_force_symnames_in_strings (abfd)) |
dc810e39 AM |
1379 | { |
1380 | if (bfd_bwrite (".file", (bfd_size_type) 6, abfd) != 6) | |
b34976b6 | 1381 | return FALSE; |
dc810e39 | 1382 | } |
7f6d05e8 CP |
1383 | maxlen = bfd_coff_filnmlen (abfd); |
1384 | } | |
252b5132 | 1385 | else |
7f6d05e8 | 1386 | maxlen = bfd_coff_force_symnames_in_strings (abfd) ? 0 : SYMNMLEN; |
252b5132 RH |
1387 | |
1388 | if (name_length > maxlen) | |
1389 | { | |
c8e7bf0d | 1390 | if (bfd_bwrite ((void *) (q->name), (bfd_size_type) name_length + 1, |
dc810e39 | 1391 | abfd) != name_length + 1) |
b34976b6 | 1392 | return FALSE; |
252b5132 RH |
1393 | } |
1394 | } | |
1395 | } | |
1396 | else | |
1397 | { | |
1398 | /* We would normally not write anything here, but we'll write | |
1399 | out 4 so that any stupid coff reader which tries to read the | |
1400 | string table even when there isn't one won't croak. */ | |
1401 | unsigned int size = STRING_SIZE_SIZE; | |
1402 | bfd_byte buffer[STRING_SIZE_SIZE]; | |
1403 | ||
1404 | #if STRING_SIZE_SIZE == 4 | |
dc810e39 | 1405 | H_PUT_32 (abfd, size, buffer); |
252b5132 | 1406 | #else |
dc810e39 | 1407 | #error Change H_PUT_32 |
252b5132 | 1408 | #endif |
c8e7bf0d | 1409 | if (bfd_bwrite ((void *) buffer, (bfd_size_type) STRING_SIZE_SIZE, abfd) |
252b5132 | 1410 | != STRING_SIZE_SIZE) |
b34976b6 | 1411 | return FALSE; |
252b5132 RH |
1412 | } |
1413 | ||
1414 | /* Make sure the .debug section was created to be the correct size. | |
1415 | We should create it ourselves on the fly, but we don't because | |
1416 | BFD won't let us write to any section until we know how large all | |
1417 | the sections are. We could still do it by making another pass | |
1418 | over the symbols. FIXME. */ | |
1419 | BFD_ASSERT (debug_string_size == 0 | |
1420 | || (debug_string_section != (asection *) NULL | |
1421 | && (BFD_ALIGN (debug_string_size, | |
1422 | 1 << debug_string_section->alignment_power) | |
eea6121a | 1423 | == debug_string_section->size))); |
252b5132 | 1424 | |
b34976b6 | 1425 | return TRUE; |
252b5132 RH |
1426 | } |
1427 | ||
b34976b6 | 1428 | bfd_boolean |
c8e7bf0d | 1429 | coff_write_linenumbers (bfd *abfd) |
252b5132 RH |
1430 | { |
1431 | asection *s; | |
1432 | bfd_size_type linesz; | |
c8e7bf0d | 1433 | void * buff; |
252b5132 RH |
1434 | |
1435 | linesz = bfd_coff_linesz (abfd); | |
1436 | buff = bfd_alloc (abfd, linesz); | |
1437 | if (!buff) | |
b34976b6 | 1438 | return FALSE; |
252b5132 RH |
1439 | for (s = abfd->sections; s != (asection *) NULL; s = s->next) |
1440 | { | |
1441 | if (s->lineno_count) | |
1442 | { | |
1443 | asymbol **q = abfd->outsymbols; | |
1444 | if (bfd_seek (abfd, s->line_filepos, SEEK_SET) != 0) | |
b34976b6 | 1445 | return FALSE; |
c8e7bf0d | 1446 | /* Find all the linenumbers in this section. */ |
252b5132 RH |
1447 | while (*q) |
1448 | { | |
1449 | asymbol *p = *q; | |
1450 | if (p->section->output_section == s) | |
1451 | { | |
1452 | alent *l = | |
1453 | BFD_SEND (bfd_asymbol_bfd (p), _get_lineno, | |
1454 | (bfd_asymbol_bfd (p), p)); | |
1455 | if (l) | |
1456 | { | |
c8e7bf0d | 1457 | /* Found a linenumber entry, output. */ |
252b5132 | 1458 | struct internal_lineno out; |
c8e7bf0d | 1459 | memset ((void *) & out, 0, sizeof (out)); |
252b5132 RH |
1460 | out.l_lnno = 0; |
1461 | out.l_addr.l_symndx = l->u.offset; | |
1462 | bfd_coff_swap_lineno_out (abfd, &out, buff); | |
dc810e39 AM |
1463 | if (bfd_bwrite (buff, (bfd_size_type) linesz, abfd) |
1464 | != linesz) | |
b34976b6 | 1465 | return FALSE; |
252b5132 RH |
1466 | l++; |
1467 | while (l->line_number) | |
1468 | { | |
1469 | out.l_lnno = l->line_number; | |
1470 | out.l_addr.l_symndx = l->u.offset; | |
1471 | bfd_coff_swap_lineno_out (abfd, &out, buff); | |
dc810e39 AM |
1472 | if (bfd_bwrite (buff, (bfd_size_type) linesz, abfd) |
1473 | != linesz) | |
b34976b6 | 1474 | return FALSE; |
252b5132 RH |
1475 | l++; |
1476 | } | |
1477 | } | |
1478 | } | |
1479 | q++; | |
1480 | } | |
1481 | } | |
1482 | } | |
1483 | bfd_release (abfd, buff); | |
b34976b6 | 1484 | return TRUE; |
252b5132 RH |
1485 | } |
1486 | ||
252b5132 | 1487 | alent * |
c8e7bf0d | 1488 | coff_get_lineno (bfd *ignore_abfd ATTRIBUTE_UNUSED, asymbol *symbol) |
252b5132 RH |
1489 | { |
1490 | return coffsymbol (symbol)->lineno; | |
1491 | } | |
1492 | ||
252b5132 RH |
1493 | /* This function transforms the offsets into the symbol table into |
1494 | pointers to syments. */ | |
1495 | ||
1496 | static void | |
c8e7bf0d NC |
1497 | coff_pointerize_aux (bfd *abfd, |
1498 | combined_entry_type *table_base, | |
1499 | combined_entry_type *symbol, | |
1500 | unsigned int indaux, | |
1501 | combined_entry_type *auxent) | |
252b5132 RH |
1502 | { |
1503 | unsigned int type = symbol->u.syment.n_type; | |
96d56e9f | 1504 | unsigned int n_sclass = symbol->u.syment.n_sclass; |
252b5132 RH |
1505 | |
1506 | if (coff_backend_info (abfd)->_bfd_coff_pointerize_aux_hook) | |
1507 | { | |
1508 | if ((*coff_backend_info (abfd)->_bfd_coff_pointerize_aux_hook) | |
1509 | (abfd, table_base, symbol, indaux, auxent)) | |
1510 | return; | |
1511 | } | |
1512 | ||
c8e7bf0d | 1513 | /* Don't bother if this is a file or a section. */ |
96d56e9f | 1514 | if (n_sclass == C_STAT && type == T_NULL) |
252b5132 | 1515 | return; |
96d56e9f | 1516 | if (n_sclass == C_FILE) |
252b5132 RH |
1517 | return; |
1518 | ||
c8e7bf0d NC |
1519 | /* Otherwise patch up. */ |
1520 | #define N_TMASK coff_data (abfd)->local_n_tmask | |
252b5132 | 1521 | #define N_BTSHFT coff_data (abfd)->local_n_btshft |
c8e7bf0d | 1522 | |
96d56e9f NC |
1523 | if ((ISFCN (type) || ISTAG (n_sclass) || n_sclass == C_BLOCK |
1524 | || n_sclass == C_FCN) | |
252b5132 RH |
1525 | && auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l > 0) |
1526 | { | |
1527 | auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p = | |
1528 | table_base + auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l; | |
1529 | auxent->fix_end = 1; | |
1530 | } | |
1531 | /* A negative tagndx is meaningless, but the SCO 3.2v4 cc can | |
1532 | generate one, so we must be careful to ignore it. */ | |
1533 | if (auxent->u.auxent.x_sym.x_tagndx.l > 0) | |
1534 | { | |
1535 | auxent->u.auxent.x_sym.x_tagndx.p = | |
1536 | table_base + auxent->u.auxent.x_sym.x_tagndx.l; | |
1537 | auxent->fix_tag = 1; | |
1538 | } | |
1539 | } | |
1540 | ||
1541 | /* Allocate space for the ".debug" section, and read it. | |
1542 | We did not read the debug section until now, because | |
244148ad | 1543 | we didn't want to go to the trouble until someone needed it. */ |
252b5132 RH |
1544 | |
1545 | static char * | |
c8e7bf0d | 1546 | build_debug_section (bfd *abfd) |
252b5132 RH |
1547 | { |
1548 | char *debug_section; | |
dc810e39 AM |
1549 | file_ptr position; |
1550 | bfd_size_type sec_size; | |
252b5132 RH |
1551 | |
1552 | asection *sect = bfd_get_section_by_name (abfd, ".debug"); | |
1553 | ||
1554 | if (!sect) | |
1555 | { | |
1556 | bfd_set_error (bfd_error_no_debug_section); | |
1557 | return NULL; | |
1558 | } | |
1559 | ||
eea6121a | 1560 | sec_size = sect->size; |
a50b1753 | 1561 | debug_section = (char *) bfd_alloc (abfd, sec_size); |
252b5132 RH |
1562 | if (debug_section == NULL) |
1563 | return NULL; | |
1564 | ||
244148ad | 1565 | /* Seek to the beginning of the `.debug' section and read it. |
252b5132 RH |
1566 | Save the current position first; it is needed by our caller. |
1567 | Then read debug section and reset the file pointer. */ | |
1568 | ||
1569 | position = bfd_tell (abfd); | |
1570 | if (bfd_seek (abfd, sect->filepos, SEEK_SET) != 0 | |
dc810e39 | 1571 | || bfd_bread (debug_section, sec_size, abfd) != sec_size |
252b5132 RH |
1572 | || bfd_seek (abfd, position, SEEK_SET) != 0) |
1573 | return NULL; | |
1574 | return debug_section; | |
1575 | } | |
1576 | ||
252b5132 RH |
1577 | /* Return a pointer to a malloc'd copy of 'name'. 'name' may not be |
1578 | \0-terminated, but will not exceed 'maxlen' characters. The copy *will* | |
1579 | be \0-terminated. */ | |
c8e7bf0d | 1580 | |
252b5132 | 1581 | static char * |
c8e7bf0d | 1582 | copy_name (bfd *abfd, char *name, size_t maxlen) |
252b5132 | 1583 | { |
dc810e39 | 1584 | size_t len; |
252b5132 RH |
1585 | char *newname; |
1586 | ||
1587 | for (len = 0; len < maxlen; ++len) | |
c8e7bf0d NC |
1588 | if (name[len] == '\0') |
1589 | break; | |
1590 | ||
a50b1753 | 1591 | if ((newname = (char *) bfd_alloc (abfd, (bfd_size_type) len + 1)) == NULL) |
c8e7bf0d | 1592 | return NULL; |
252b5132 | 1593 | |
252b5132 RH |
1594 | strncpy (newname, name, len); |
1595 | newname[len] = '\0'; | |
1596 | return newname; | |
1597 | } | |
1598 | ||
1599 | /* Read in the external symbols. */ | |
1600 | ||
b34976b6 | 1601 | bfd_boolean |
c8e7bf0d | 1602 | _bfd_coff_get_external_symbols (bfd *abfd) |
252b5132 RH |
1603 | { |
1604 | bfd_size_type symesz; | |
dc810e39 | 1605 | bfd_size_type size; |
c8e7bf0d | 1606 | void * syms; |
252b5132 RH |
1607 | |
1608 | if (obj_coff_external_syms (abfd) != NULL) | |
b34976b6 | 1609 | return TRUE; |
252b5132 RH |
1610 | |
1611 | symesz = bfd_coff_symesz (abfd); | |
1612 | ||
1613 | size = obj_raw_syment_count (abfd) * symesz; | |
353c5574 MS |
1614 | if (size == 0) |
1615 | return TRUE; | |
252b5132 | 1616 | |
c8e7bf0d | 1617 | syms = bfd_malloc (size); |
353c5574 | 1618 | if (syms == NULL) |
b34976b6 | 1619 | return FALSE; |
252b5132 RH |
1620 | |
1621 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0 | |
dc810e39 | 1622 | || bfd_bread (syms, size, abfd) != size) |
252b5132 RH |
1623 | { |
1624 | if (syms != NULL) | |
1625 | free (syms); | |
b34976b6 | 1626 | return FALSE; |
252b5132 RH |
1627 | } |
1628 | ||
1629 | obj_coff_external_syms (abfd) = syms; | |
1630 | ||
b34976b6 | 1631 | return TRUE; |
252b5132 RH |
1632 | } |
1633 | ||
1634 | /* Read in the external strings. The strings are not loaded until | |
1635 | they are needed. This is because we have no simple way of | |
1636 | detecting a missing string table in an archive. */ | |
1637 | ||
1638 | const char * | |
c8e7bf0d | 1639 | _bfd_coff_read_string_table (bfd *abfd) |
252b5132 RH |
1640 | { |
1641 | char extstrsize[STRING_SIZE_SIZE]; | |
dc810e39 | 1642 | bfd_size_type strsize; |
252b5132 | 1643 | char *strings; |
dc810e39 | 1644 | file_ptr pos; |
252b5132 RH |
1645 | |
1646 | if (obj_coff_strings (abfd) != NULL) | |
1647 | return obj_coff_strings (abfd); | |
1648 | ||
1649 | if (obj_sym_filepos (abfd) == 0) | |
1650 | { | |
1651 | bfd_set_error (bfd_error_no_symbols); | |
1652 | return NULL; | |
1653 | } | |
1654 | ||
dc810e39 AM |
1655 | pos = obj_sym_filepos (abfd); |
1656 | pos += obj_raw_syment_count (abfd) * bfd_coff_symesz (abfd); | |
1657 | if (bfd_seek (abfd, pos, SEEK_SET) != 0) | |
252b5132 | 1658 | return NULL; |
244148ad | 1659 | |
dc810e39 AM |
1660 | if (bfd_bread (extstrsize, (bfd_size_type) sizeof extstrsize, abfd) |
1661 | != sizeof extstrsize) | |
252b5132 RH |
1662 | { |
1663 | if (bfd_get_error () != bfd_error_file_truncated) | |
1664 | return NULL; | |
1665 | ||
1666 | /* There is no string table. */ | |
1667 | strsize = STRING_SIZE_SIZE; | |
1668 | } | |
1669 | else | |
1670 | { | |
1671 | #if STRING_SIZE_SIZE == 4 | |
dc810e39 | 1672 | strsize = H_GET_32 (abfd, extstrsize); |
252b5132 | 1673 | #else |
dc810e39 | 1674 | #error Change H_GET_32 |
252b5132 RH |
1675 | #endif |
1676 | } | |
1677 | ||
1678 | if (strsize < STRING_SIZE_SIZE) | |
1679 | { | |
1680 | (*_bfd_error_handler) | |
d003868e | 1681 | (_("%B: bad string table size %lu"), abfd, (unsigned long) strsize); |
252b5132 RH |
1682 | bfd_set_error (bfd_error_bad_value); |
1683 | return NULL; | |
1684 | } | |
1685 | ||
a50b1753 | 1686 | strings = (char *) bfd_malloc (strsize); |
252b5132 RH |
1687 | if (strings == NULL) |
1688 | return NULL; | |
1689 | ||
dc810e39 | 1690 | if (bfd_bread (strings + STRING_SIZE_SIZE, strsize - STRING_SIZE_SIZE, abfd) |
252b5132 RH |
1691 | != strsize - STRING_SIZE_SIZE) |
1692 | { | |
1693 | free (strings); | |
1694 | return NULL; | |
1695 | } | |
1696 | ||
1697 | obj_coff_strings (abfd) = strings; | |
1698 | ||
1699 | return strings; | |
1700 | } | |
1701 | ||
1702 | /* Free up the external symbols and strings read from a COFF file. */ | |
1703 | ||
b34976b6 | 1704 | bfd_boolean |
c8e7bf0d | 1705 | _bfd_coff_free_symbols (bfd *abfd) |
252b5132 RH |
1706 | { |
1707 | if (obj_coff_external_syms (abfd) != NULL | |
1708 | && ! obj_coff_keep_syms (abfd)) | |
1709 | { | |
1710 | free (obj_coff_external_syms (abfd)); | |
1711 | obj_coff_external_syms (abfd) = NULL; | |
1712 | } | |
1713 | if (obj_coff_strings (abfd) != NULL | |
1714 | && ! obj_coff_keep_strings (abfd)) | |
1715 | { | |
1716 | free (obj_coff_strings (abfd)); | |
1717 | obj_coff_strings (abfd) = NULL; | |
1718 | } | |
b34976b6 | 1719 | return TRUE; |
252b5132 RH |
1720 | } |
1721 | ||
1722 | /* Read a symbol table into freshly bfd_allocated memory, swap it, and | |
1723 | knit the symbol names into a normalized form. By normalized here I | |
1724 | mean that all symbols have an n_offset pointer that points to a null- | |
1725 | terminated string. */ | |
1726 | ||
1727 | combined_entry_type * | |
c8e7bf0d | 1728 | coff_get_normalized_symtab (bfd *abfd) |
252b5132 RH |
1729 | { |
1730 | combined_entry_type *internal; | |
1731 | combined_entry_type *internal_ptr; | |
1732 | combined_entry_type *symbol_ptr; | |
1733 | combined_entry_type *internal_end; | |
dc810e39 | 1734 | size_t symesz; |
252b5132 RH |
1735 | char *raw_src; |
1736 | char *raw_end; | |
1737 | const char *string_table = NULL; | |
1738 | char *debug_section = NULL; | |
dc810e39 | 1739 | bfd_size_type size; |
252b5132 RH |
1740 | |
1741 | if (obj_raw_syments (abfd) != NULL) | |
1742 | return obj_raw_syments (abfd); | |
1743 | ||
1744 | size = obj_raw_syment_count (abfd) * sizeof (combined_entry_type); | |
a50b1753 | 1745 | internal = (combined_entry_type *) bfd_zalloc (abfd, size); |
252b5132 RH |
1746 | if (internal == NULL && size != 0) |
1747 | return NULL; | |
1748 | internal_end = internal + obj_raw_syment_count (abfd); | |
1749 | ||
1750 | if (! _bfd_coff_get_external_symbols (abfd)) | |
1751 | return NULL; | |
1752 | ||
1753 | raw_src = (char *) obj_coff_external_syms (abfd); | |
1754 | ||
c8e7bf0d | 1755 | /* Mark the end of the symbols. */ |
252b5132 RH |
1756 | symesz = bfd_coff_symesz (abfd); |
1757 | raw_end = (char *) raw_src + obj_raw_syment_count (abfd) * symesz; | |
1758 | ||
1759 | /* FIXME SOMEDAY. A string table size of zero is very weird, but | |
1760 | probably possible. If one shows up, it will probably kill us. */ | |
1761 | ||
c8e7bf0d | 1762 | /* Swap all the raw entries. */ |
252b5132 RH |
1763 | for (internal_ptr = internal; |
1764 | raw_src < raw_end; | |
1765 | raw_src += symesz, internal_ptr++) | |
1766 | { | |
1767 | ||
1768 | unsigned int i; | |
c8e7bf0d NC |
1769 | bfd_coff_swap_sym_in (abfd, (void *) raw_src, |
1770 | (void *) & internal_ptr->u.syment); | |
252b5132 RH |
1771 | symbol_ptr = internal_ptr; |
1772 | ||
1773 | for (i = 0; | |
1774 | i < symbol_ptr->u.syment.n_numaux; | |
1775 | i++) | |
1776 | { | |
1777 | internal_ptr++; | |
1778 | raw_src += symesz; | |
c8e7bf0d | 1779 | bfd_coff_swap_aux_in (abfd, (void *) raw_src, |
252b5132 RH |
1780 | symbol_ptr->u.syment.n_type, |
1781 | symbol_ptr->u.syment.n_sclass, | |
dc810e39 | 1782 | (int) i, symbol_ptr->u.syment.n_numaux, |
252b5132 RH |
1783 | &(internal_ptr->u.auxent)); |
1784 | coff_pointerize_aux (abfd, internal, symbol_ptr, i, | |
1785 | internal_ptr); | |
1786 | } | |
1787 | } | |
1788 | ||
1789 | /* Free the raw symbols, but not the strings (if we have them). */ | |
b34976b6 | 1790 | obj_coff_keep_strings (abfd) = TRUE; |
252b5132 RH |
1791 | if (! _bfd_coff_free_symbols (abfd)) |
1792 | return NULL; | |
1793 | ||
1794 | for (internal_ptr = internal; internal_ptr < internal_end; | |
1795 | internal_ptr++) | |
1796 | { | |
1797 | if (internal_ptr->u.syment.n_sclass == C_FILE | |
1798 | && internal_ptr->u.syment.n_numaux > 0) | |
1799 | { | |
c8e7bf0d NC |
1800 | /* Make a file symbol point to the name in the auxent, since |
1801 | the text ".file" is redundant. */ | |
252b5132 RH |
1802 | if ((internal_ptr + 1)->u.auxent.x_file.x_n.x_zeroes == 0) |
1803 | { | |
c8e7bf0d | 1804 | /* The filename is a long one, point into the string table. */ |
252b5132 RH |
1805 | if (string_table == NULL) |
1806 | { | |
1807 | string_table = _bfd_coff_read_string_table (abfd); | |
1808 | if (string_table == NULL) | |
1809 | return NULL; | |
1810 | } | |
1811 | ||
1812 | internal_ptr->u.syment._n._n_n._n_offset = | |
d2df793a | 1813 | ((bfd_hostptr_t) |
252b5132 RH |
1814 | (string_table |
1815 | + (internal_ptr + 1)->u.auxent.x_file.x_n.x_offset)); | |
1816 | } | |
1817 | else | |
1818 | { | |
7bb9db4d ILT |
1819 | /* Ordinary short filename, put into memory anyway. The |
1820 | Microsoft PE tools sometimes store a filename in | |
1821 | multiple AUX entries. */ | |
ec0ef80e DD |
1822 | if (internal_ptr->u.syment.n_numaux > 1 |
1823 | && coff_data (abfd)->pe) | |
c8e7bf0d | 1824 | internal_ptr->u.syment._n._n_n._n_offset = |
d2df793a | 1825 | ((bfd_hostptr_t) |
c8e7bf0d NC |
1826 | copy_name (abfd, |
1827 | (internal_ptr + 1)->u.auxent.x_file.x_fname, | |
1828 | internal_ptr->u.syment.n_numaux * symesz)); | |
ec0ef80e | 1829 | else |
c8e7bf0d | 1830 | internal_ptr->u.syment._n._n_n._n_offset = |
d2df793a | 1831 | ((bfd_hostptr_t) |
c8e7bf0d NC |
1832 | copy_name (abfd, |
1833 | (internal_ptr + 1)->u.auxent.x_file.x_fname, | |
1834 | (size_t) bfd_coff_filnmlen (abfd))); | |
252b5132 RH |
1835 | } |
1836 | } | |
1837 | else | |
1838 | { | |
1839 | if (internal_ptr->u.syment._n._n_n._n_zeroes != 0) | |
1840 | { | |
1841 | /* This is a "short" name. Make it long. */ | |
dc810e39 AM |
1842 | size_t i; |
1843 | char *newstring; | |
252b5132 | 1844 | |
c8e7bf0d | 1845 | /* Find the length of this string without walking into memory |
252b5132 RH |
1846 | that isn't ours. */ |
1847 | for (i = 0; i < 8; ++i) | |
dc810e39 AM |
1848 | if (internal_ptr->u.syment._n._n_name[i] == '\0') |
1849 | break; | |
252b5132 | 1850 | |
a50b1753 | 1851 | newstring = (char *) bfd_zalloc (abfd, (bfd_size_type) (i + 1)); |
dc810e39 | 1852 | if (newstring == NULL) |
c8e7bf0d | 1853 | return NULL; |
dc810e39 | 1854 | strncpy (newstring, internal_ptr->u.syment._n._n_name, i); |
d2df793a | 1855 | internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) newstring; |
252b5132 RH |
1856 | internal_ptr->u.syment._n._n_n._n_zeroes = 0; |
1857 | } | |
1858 | else if (internal_ptr->u.syment._n._n_n._n_offset == 0) | |
649aeae3 | 1859 | internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) ""; |
252b5132 RH |
1860 | else if (!bfd_coff_symname_in_debug (abfd, &internal_ptr->u.syment)) |
1861 | { | |
1862 | /* Long name already. Point symbol at the string in the | |
1863 | table. */ | |
1864 | if (string_table == NULL) | |
1865 | { | |
1866 | string_table = _bfd_coff_read_string_table (abfd); | |
1867 | if (string_table == NULL) | |
1868 | return NULL; | |
1869 | } | |
1870 | internal_ptr->u.syment._n._n_n._n_offset = | |
d2df793a | 1871 | ((bfd_hostptr_t) |
252b5132 RH |
1872 | (string_table |
1873 | + internal_ptr->u.syment._n._n_n._n_offset)); | |
1874 | } | |
1875 | else | |
1876 | { | |
1877 | /* Long name in debug section. Very similar. */ | |
1878 | if (debug_section == NULL) | |
1879 | debug_section = build_debug_section (abfd); | |
d2df793a | 1880 | internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) |
252b5132 RH |
1881 | (debug_section + internal_ptr->u.syment._n._n_n._n_offset); |
1882 | } | |
1883 | } | |
1884 | internal_ptr += internal_ptr->u.syment.n_numaux; | |
1885 | } | |
1886 | ||
1887 | obj_raw_syments (abfd) = internal; | |
1888 | BFD_ASSERT (obj_raw_syment_count (abfd) | |
1889 | == (unsigned int) (internal_ptr - internal)); | |
1890 | ||
c8e7bf0d NC |
1891 | return internal; |
1892 | } | |
252b5132 RH |
1893 | |
1894 | long | |
c8e7bf0d | 1895 | coff_get_reloc_upper_bound (bfd *abfd, sec_ptr asect) |
252b5132 RH |
1896 | { |
1897 | if (bfd_get_format (abfd) != bfd_object) | |
1898 | { | |
1899 | bfd_set_error (bfd_error_invalid_operation); | |
1900 | return -1; | |
1901 | } | |
1902 | return (asect->reloc_count + 1) * sizeof (arelent *); | |
1903 | } | |
1904 | ||
1905 | asymbol * | |
c8e7bf0d | 1906 | coff_make_empty_symbol (bfd *abfd) |
252b5132 | 1907 | { |
dc810e39 | 1908 | bfd_size_type amt = sizeof (coff_symbol_type); |
d3ce72d0 | 1909 | coff_symbol_type *new_symbol = (coff_symbol_type *) bfd_zalloc (abfd, amt); |
c8e7bf0d | 1910 | |
d3ce72d0 | 1911 | if (new_symbol == NULL) |
c8e7bf0d | 1912 | return NULL; |
d3ce72d0 NC |
1913 | new_symbol->symbol.section = 0; |
1914 | new_symbol->native = 0; | |
1915 | new_symbol->lineno = NULL; | |
1916 | new_symbol->done_lineno = FALSE; | |
1917 | new_symbol->symbol.the_bfd = abfd; | |
c8e7bf0d | 1918 | |
d3ce72d0 | 1919 | return & new_symbol->symbol; |
252b5132 RH |
1920 | } |
1921 | ||
1922 | /* Make a debugging symbol. */ | |
1923 | ||
1924 | asymbol * | |
c8e7bf0d NC |
1925 | coff_bfd_make_debug_symbol (bfd *abfd, |
1926 | void * ptr ATTRIBUTE_UNUSED, | |
1927 | unsigned long sz ATTRIBUTE_UNUSED) | |
252b5132 | 1928 | { |
dc810e39 | 1929 | bfd_size_type amt = sizeof (coff_symbol_type); |
d3ce72d0 | 1930 | coff_symbol_type *new_symbol = (coff_symbol_type *) bfd_alloc (abfd, amt); |
c8e7bf0d | 1931 | |
d3ce72d0 | 1932 | if (new_symbol == NULL) |
c8e7bf0d | 1933 | return NULL; |
252b5132 RH |
1934 | /* @@ The 10 is a guess at a plausible maximum number of aux entries |
1935 | (but shouldn't be a constant). */ | |
dc810e39 | 1936 | amt = sizeof (combined_entry_type) * 10; |
d3ce72d0 NC |
1937 | new_symbol->native = (combined_entry_type *) bfd_zalloc (abfd, amt); |
1938 | if (!new_symbol->native) | |
c8e7bf0d | 1939 | return NULL; |
d3ce72d0 NC |
1940 | new_symbol->symbol.section = bfd_abs_section_ptr; |
1941 | new_symbol->symbol.flags = BSF_DEBUGGING; | |
1942 | new_symbol->lineno = NULL; | |
1943 | new_symbol->done_lineno = FALSE; | |
1944 | new_symbol->symbol.the_bfd = abfd; | |
c8e7bf0d | 1945 | |
d3ce72d0 | 1946 | return & new_symbol->symbol; |
252b5132 RH |
1947 | } |
1948 | ||
252b5132 | 1949 | void |
c8e7bf0d | 1950 | coff_get_symbol_info (bfd *abfd, asymbol *symbol, symbol_info *ret) |
252b5132 RH |
1951 | { |
1952 | bfd_symbol_info (symbol, ret); | |
c8e7bf0d | 1953 | |
252b5132 RH |
1954 | if (coffsymbol (symbol)->native != NULL |
1955 | && coffsymbol (symbol)->native->fix_value) | |
c8e7bf0d | 1956 | ret->value = coffsymbol (symbol)->native->u.syment.n_value - |
d2df793a | 1957 | (bfd_hostptr_t) obj_raw_syments (abfd); |
252b5132 RH |
1958 | } |
1959 | ||
1960 | /* Return the COFF syment for a symbol. */ | |
1961 | ||
b34976b6 | 1962 | bfd_boolean |
c8e7bf0d NC |
1963 | bfd_coff_get_syment (bfd *abfd, |
1964 | asymbol *symbol, | |
1965 | struct internal_syment *psyment) | |
252b5132 RH |
1966 | { |
1967 | coff_symbol_type *csym; | |
1968 | ||
1969 | csym = coff_symbol_from (abfd, symbol); | |
1970 | if (csym == NULL || csym->native == NULL) | |
1971 | { | |
1972 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 1973 | return FALSE; |
252b5132 RH |
1974 | } |
1975 | ||
1976 | *psyment = csym->native->u.syment; | |
1977 | ||
1978 | if (csym->native->fix_value) | |
dc810e39 | 1979 | psyment->n_value = psyment->n_value - |
d2df793a | 1980 | (bfd_hostptr_t) obj_raw_syments (abfd); |
252b5132 RH |
1981 | |
1982 | /* FIXME: We should handle fix_line here. */ | |
1983 | ||
b34976b6 | 1984 | return TRUE; |
252b5132 RH |
1985 | } |
1986 | ||
1987 | /* Return the COFF auxent for a symbol. */ | |
1988 | ||
b34976b6 | 1989 | bfd_boolean |
c8e7bf0d NC |
1990 | bfd_coff_get_auxent (bfd *abfd, |
1991 | asymbol *symbol, | |
1992 | int indx, | |
1993 | union internal_auxent *pauxent) | |
252b5132 RH |
1994 | { |
1995 | coff_symbol_type *csym; | |
1996 | combined_entry_type *ent; | |
1997 | ||
1998 | csym = coff_symbol_from (abfd, symbol); | |
1999 | ||
2000 | if (csym == NULL | |
2001 | || csym->native == NULL | |
2002 | || indx >= csym->native->u.syment.n_numaux) | |
2003 | { | |
2004 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 2005 | return FALSE; |
252b5132 RH |
2006 | } |
2007 | ||
2008 | ent = csym->native + indx + 1; | |
2009 | ||
2010 | *pauxent = ent->u.auxent; | |
2011 | ||
2012 | if (ent->fix_tag) | |
2013 | pauxent->x_sym.x_tagndx.l = | |
2014 | ((combined_entry_type *) pauxent->x_sym.x_tagndx.p | |
2015 | - obj_raw_syments (abfd)); | |
2016 | ||
2017 | if (ent->fix_end) | |
2018 | pauxent->x_sym.x_fcnary.x_fcn.x_endndx.l = | |
2019 | ((combined_entry_type *) pauxent->x_sym.x_fcnary.x_fcn.x_endndx.p | |
2020 | - obj_raw_syments (abfd)); | |
2021 | ||
2022 | if (ent->fix_scnlen) | |
2023 | pauxent->x_csect.x_scnlen.l = | |
2024 | ((combined_entry_type *) pauxent->x_csect.x_scnlen.p | |
2025 | - obj_raw_syments (abfd)); | |
2026 | ||
b34976b6 | 2027 | return TRUE; |
252b5132 RH |
2028 | } |
2029 | ||
2030 | /* Print out information about COFF symbol. */ | |
2031 | ||
2032 | void | |
c8e7bf0d NC |
2033 | coff_print_symbol (bfd *abfd, |
2034 | void * filep, | |
2035 | asymbol *symbol, | |
2036 | bfd_print_symbol_type how) | |
252b5132 | 2037 | { |
c8e7bf0d | 2038 | FILE * file = (FILE *) filep; |
252b5132 RH |
2039 | |
2040 | switch (how) | |
2041 | { | |
2042 | case bfd_print_symbol_name: | |
2043 | fprintf (file, "%s", symbol->name); | |
2044 | break; | |
2045 | ||
2046 | case bfd_print_symbol_more: | |
2047 | fprintf (file, "coff %s %s", | |
2048 | coffsymbol (symbol)->native ? "n" : "g", | |
2049 | coffsymbol (symbol)->lineno ? "l" : " "); | |
2050 | break; | |
2051 | ||
2052 | case bfd_print_symbol_all: | |
2053 | if (coffsymbol (symbol)->native) | |
2054 | { | |
beb1bf64 | 2055 | bfd_vma val; |
252b5132 RH |
2056 | unsigned int aux; |
2057 | combined_entry_type *combined = coffsymbol (symbol)->native; | |
2058 | combined_entry_type *root = obj_raw_syments (abfd); | |
2059 | struct lineno_cache_entry *l = coffsymbol (symbol)->lineno; | |
2060 | ||
2061 | fprintf (file, "[%3ld]", (long) (combined - root)); | |
2062 | ||
2063 | if (! combined->fix_value) | |
beb1bf64 | 2064 | val = (bfd_vma) combined->u.syment.n_value; |
252b5132 | 2065 | else |
d2df793a | 2066 | val = combined->u.syment.n_value - (bfd_hostptr_t) root; |
252b5132 | 2067 | |
7920ce38 | 2068 | fprintf (file, "(sec %2d)(fl 0x%02x)(ty %3x)(scl %3d) (nx %d) 0x", |
252b5132 RH |
2069 | combined->u.syment.n_scnum, |
2070 | combined->u.syment.n_flags, | |
2071 | combined->u.syment.n_type, | |
2072 | combined->u.syment.n_sclass, | |
745c12f8 | 2073 | combined->u.syment.n_numaux); |
ebf12fbe | 2074 | bfd_fprintf_vma (abfd, file, val); |
745c12f8 | 2075 | fprintf (file, " %s", symbol->name); |
252b5132 RH |
2076 | |
2077 | for (aux = 0; aux < combined->u.syment.n_numaux; aux++) | |
2078 | { | |
2079 | combined_entry_type *auxp = combined + aux + 1; | |
2080 | long tagndx; | |
2081 | ||
2082 | if (auxp->fix_tag) | |
2083 | tagndx = auxp->u.auxent.x_sym.x_tagndx.p - root; | |
2084 | else | |
2085 | tagndx = auxp->u.auxent.x_sym.x_tagndx.l; | |
2086 | ||
2087 | fprintf (file, "\n"); | |
2088 | ||
2089 | if (bfd_coff_print_aux (abfd, file, root, combined, auxp, aux)) | |
2090 | continue; | |
2091 | ||
2092 | switch (combined->u.syment.n_sclass) | |
2093 | { | |
2094 | case C_FILE: | |
2095 | fprintf (file, "File "); | |
2096 | break; | |
2097 | ||
2098 | case C_STAT: | |
2099 | if (combined->u.syment.n_type == T_NULL) | |
c8e7bf0d | 2100 | /* Probably a section symbol ? */ |
252b5132 RH |
2101 | { |
2102 | fprintf (file, "AUX scnlen 0x%lx nreloc %d nlnno %d", | |
0af1713e | 2103 | (unsigned long) auxp->u.auxent.x_scn.x_scnlen, |
252b5132 RH |
2104 | auxp->u.auxent.x_scn.x_nreloc, |
2105 | auxp->u.auxent.x_scn.x_nlinno); | |
2106 | if (auxp->u.auxent.x_scn.x_checksum != 0 | |
2107 | || auxp->u.auxent.x_scn.x_associated != 0 | |
2108 | || auxp->u.auxent.x_scn.x_comdat != 0) | |
2109 | fprintf (file, " checksum 0x%lx assoc %d comdat %d", | |
2110 | auxp->u.auxent.x_scn.x_checksum, | |
2111 | auxp->u.auxent.x_scn.x_associated, | |
2112 | auxp->u.auxent.x_scn.x_comdat); | |
2113 | break; | |
2114 | } | |
c8e7bf0d | 2115 | /* Otherwise fall through. */ |
312191a6 | 2116 | case C_EXT: |
8602d4fe | 2117 | case C_AIX_WEAKEXT: |
312191a6 ILT |
2118 | if (ISFCN (combined->u.syment.n_type)) |
2119 | { | |
cea4409c AM |
2120 | long next, llnos; |
2121 | ||
2122 | if (auxp->fix_end) | |
2123 | next = (auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p | |
2124 | - root); | |
2125 | else | |
2126 | next = auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l; | |
2127 | llnos = auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
312191a6 | 2128 | fprintf (file, |
3d66c4f7 | 2129 | "AUX tagndx %ld ttlsiz 0x%lx lnnos %ld next %ld", |
0af1713e AM |
2130 | tagndx, |
2131 | (unsigned long) auxp->u.auxent.x_sym.x_misc.x_fsize, | |
cea4409c | 2132 | llnos, next); |
312191a6 ILT |
2133 | break; |
2134 | } | |
c8e7bf0d | 2135 | /* Otherwise fall through. */ |
252b5132 RH |
2136 | default: |
2137 | fprintf (file, "AUX lnno %d size 0x%x tagndx %ld", | |
2138 | auxp->u.auxent.x_sym.x_misc.x_lnsz.x_lnno, | |
2139 | auxp->u.auxent.x_sym.x_misc.x_lnsz.x_size, | |
2140 | tagndx); | |
2141 | if (auxp->fix_end) | |
2142 | fprintf (file, " endndx %ld", | |
2143 | ((long) | |
2144 | (auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p | |
2145 | - root))); | |
2146 | break; | |
2147 | } | |
2148 | } | |
2149 | ||
2150 | if (l) | |
2151 | { | |
2152 | fprintf (file, "\n%s :", l->u.sym->name); | |
2153 | l++; | |
2154 | while (l->line_number) | |
2155 | { | |
745c12f8 | 2156 | fprintf (file, "\n%4d : ", l->line_number); |
ebf12fbe | 2157 | bfd_fprintf_vma (abfd, file, l->u.offset + symbol->section->vma); |
252b5132 RH |
2158 | l++; |
2159 | } | |
2160 | } | |
2161 | } | |
2162 | else | |
2163 | { | |
c8e7bf0d | 2164 | bfd_print_symbol_vandf (abfd, (void *) file, symbol); |
252b5132 RH |
2165 | fprintf (file, " %-5s %s %s %s", |
2166 | symbol->section->name, | |
2167 | coffsymbol (symbol)->native ? "n" : "g", | |
2168 | coffsymbol (symbol)->lineno ? "l" : " ", | |
2169 | symbol->name); | |
2170 | } | |
2171 | } | |
2172 | } | |
2173 | ||
2174 | /* Return whether a symbol name implies a local symbol. In COFF, | |
2175 | local symbols generally start with ``.L''. Most targets use this | |
2176 | function for the is_local_label_name entry point, but some may | |
2177 | override it. */ | |
2178 | ||
b34976b6 | 2179 | bfd_boolean |
c8e7bf0d NC |
2180 | _bfd_coff_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, |
2181 | const char *name) | |
252b5132 | 2182 | { |
b34976b6 | 2183 | return name[0] == '.' && name[1] == 'L'; |
252b5132 RH |
2184 | } |
2185 | ||
9a968f43 NC |
2186 | /* Provided a BFD, a section and an offset (in bytes, not octets) into the |
2187 | section, calculate and return the name of the source file and the line | |
2188 | nearest to the wanted location. */ | |
435b1e90 | 2189 | |
b34976b6 | 2190 | bfd_boolean |
fc28f9aa TG |
2191 | coff_find_nearest_line_with_names (bfd *abfd, |
2192 | const struct dwarf_debug_section *debug_sections, | |
2193 | asection *section, | |
2194 | asymbol **symbols, | |
2195 | bfd_vma offset, | |
2196 | const char **filename_ptr, | |
2197 | const char **functionname_ptr, | |
2198 | unsigned int *line_ptr) | |
252b5132 | 2199 | { |
b34976b6 | 2200 | bfd_boolean found; |
252b5132 RH |
2201 | unsigned int i; |
2202 | unsigned int line_base; | |
2203 | coff_data_type *cof = coff_data (abfd); | |
c8e7bf0d | 2204 | /* Run through the raw syments if available. */ |
252b5132 RH |
2205 | combined_entry_type *p; |
2206 | combined_entry_type *pend; | |
2207 | alent *l; | |
2208 | struct coff_section_tdata *sec_data; | |
dc810e39 | 2209 | bfd_size_type amt; |
252b5132 RH |
2210 | |
2211 | /* Before looking through the symbol table, try to use a .stab | |
2212 | section to find the information. */ | |
2213 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
2214 | &found, filename_ptr, | |
2215 | functionname_ptr, line_ptr, | |
51db3708 | 2216 | &coff_data(abfd)->line_info)) |
b34976b6 | 2217 | return FALSE; |
51db3708 | 2218 | |
4ca29a6a | 2219 | if (found) |
b34976b6 | 2220 | return TRUE; |
4ca29a6a | 2221 | |
51db3708 | 2222 | /* Also try examining DWARF2 debugging information. */ |
fc28f9aa TG |
2223 | if (_bfd_dwarf2_find_nearest_line (abfd, debug_sections, |
2224 | section, symbols, offset, | |
51db3708 | 2225 | filename_ptr, functionname_ptr, |
9b8d1a36 | 2226 | line_ptr, NULL, 0, |
51db3708 | 2227 | &coff_data(abfd)->dwarf2_find_line_info)) |
b34976b6 | 2228 | return TRUE; |
51db3708 | 2229 | |
252b5132 RH |
2230 | *filename_ptr = 0; |
2231 | *functionname_ptr = 0; | |
2232 | *line_ptr = 0; | |
2233 | ||
c8e7bf0d | 2234 | /* Don't try and find line numbers in a non coff file. */ |
9bd09e22 | 2235 | if (!bfd_family_coff (abfd)) |
b34976b6 | 2236 | return FALSE; |
252b5132 RH |
2237 | |
2238 | if (cof == NULL) | |
b34976b6 | 2239 | return FALSE; |
252b5132 RH |
2240 | |
2241 | /* Find the first C_FILE symbol. */ | |
2242 | p = cof->raw_syments; | |
2243 | if (!p) | |
b34976b6 | 2244 | return FALSE; |
252b5132 RH |
2245 | |
2246 | pend = p + cof->raw_syment_count; | |
2247 | while (p < pend) | |
2248 | { | |
2249 | if (p->u.syment.n_sclass == C_FILE) | |
2250 | break; | |
2251 | p += 1 + p->u.syment.n_numaux; | |
2252 | } | |
2253 | ||
2254 | if (p < pend) | |
2255 | { | |
2256 | bfd_vma sec_vma; | |
2257 | bfd_vma maxdiff; | |
2258 | ||
2259 | /* Look through the C_FILE symbols to find the best one. */ | |
2260 | sec_vma = bfd_get_section_vma (abfd, section); | |
2261 | *filename_ptr = (char *) p->u.syment._n._n_n._n_offset; | |
2262 | maxdiff = (bfd_vma) 0 - (bfd_vma) 1; | |
2263 | while (1) | |
2264 | { | |
4d9e2b27 | 2265 | bfd_vma file_addr; |
252b5132 RH |
2266 | combined_entry_type *p2; |
2267 | ||
2268 | for (p2 = p + 1 + p->u.syment.n_numaux; | |
2269 | p2 < pend; | |
2270 | p2 += 1 + p2->u.syment.n_numaux) | |
2271 | { | |
2272 | if (p2->u.syment.n_scnum > 0 | |
2273 | && (section | |
2274 | == coff_section_from_bfd_index (abfd, | |
2275 | p2->u.syment.n_scnum))) | |
2276 | break; | |
2277 | if (p2->u.syment.n_sclass == C_FILE) | |
2278 | { | |
2279 | p2 = pend; | |
2280 | break; | |
2281 | } | |
2282 | } | |
2283 | ||
4d9e2b27 NC |
2284 | file_addr = (bfd_vma) p2->u.syment.n_value; |
2285 | /* PR 11512: Include the section address of the function name symbol. */ | |
2286 | if (p2->u.syment.n_scnum > 0) | |
2287 | file_addr += coff_section_from_bfd_index (abfd, | |
2288 | p2->u.syment.n_scnum)->vma; | |
798c1fb8 ILT |
2289 | /* We use <= MAXDIFF here so that if we get a zero length |
2290 | file, we actually use the next file entry. */ | |
252b5132 | 2291 | if (p2 < pend |
4d9e2b27 NC |
2292 | && offset + sec_vma >= file_addr |
2293 | && offset + sec_vma - file_addr <= maxdiff) | |
252b5132 RH |
2294 | { |
2295 | *filename_ptr = (char *) p->u.syment._n._n_n._n_offset; | |
2296 | maxdiff = offset + sec_vma - p2->u.syment.n_value; | |
2297 | } | |
2298 | ||
2299 | /* Avoid endless loops on erroneous files by ensuring that | |
2300 | we always move forward in the file. */ | |
cea4409c | 2301 | if (p >= cof->raw_syments + p->u.syment.n_value) |
252b5132 RH |
2302 | break; |
2303 | ||
2304 | p = cof->raw_syments + p->u.syment.n_value; | |
2305 | if (p > pend || p->u.syment.n_sclass != C_FILE) | |
2306 | break; | |
2307 | } | |
2308 | } | |
2309 | ||
c8e7bf0d | 2310 | /* Now wander though the raw linenumbers of the section. */ |
70df0c05 | 2311 | /* If we have been called on this section before, and the offset we |
252b5132 RH |
2312 | want is further down then we can prime the lookup loop. */ |
2313 | sec_data = coff_section_data (abfd, section); | |
2314 | if (sec_data != NULL | |
2315 | && sec_data->i > 0 | |
2316 | && offset >= sec_data->offset) | |
2317 | { | |
2318 | i = sec_data->i; | |
2319 | *functionname_ptr = sec_data->function; | |
2320 | line_base = sec_data->line_base; | |
2321 | } | |
2322 | else | |
2323 | { | |
2324 | i = 0; | |
2325 | line_base = 0; | |
2326 | } | |
2327 | ||
2328 | if (section->lineno != NULL) | |
2329 | { | |
798c1fb8 ILT |
2330 | bfd_vma last_value = 0; |
2331 | ||
252b5132 RH |
2332 | l = §ion->lineno[i]; |
2333 | ||
2334 | for (; i < section->lineno_count; i++) | |
2335 | { | |
2336 | if (l->line_number == 0) | |
2337 | { | |
c8e7bf0d | 2338 | /* Get the symbol this line number points at. */ |
252b5132 RH |
2339 | coff_symbol_type *coff = (coff_symbol_type *) (l->u.sym); |
2340 | if (coff->symbol.value > offset) | |
2341 | break; | |
2342 | *functionname_ptr = coff->symbol.name; | |
798c1fb8 | 2343 | last_value = coff->symbol.value; |
252b5132 RH |
2344 | if (coff->native) |
2345 | { | |
2346 | combined_entry_type *s = coff->native; | |
2347 | s = s + 1 + s->u.syment.n_numaux; | |
2348 | ||
2349 | /* In XCOFF a debugging symbol can follow the | |
2350 | function symbol. */ | |
2351 | if (s->u.syment.n_scnum == N_DEBUG) | |
2352 | s = s + 1 + s->u.syment.n_numaux; | |
2353 | ||
2354 | /* S should now point to the .bf of the function. */ | |
2355 | if (s->u.syment.n_numaux) | |
2356 | { | |
2357 | /* The linenumber is stored in the auxent. */ | |
2358 | union internal_auxent *a = &((s + 1)->u.auxent); | |
2359 | line_base = a->x_sym.x_misc.x_lnsz.x_lnno; | |
2360 | *line_ptr = line_base; | |
2361 | } | |
2362 | } | |
2363 | } | |
2364 | else | |
2365 | { | |
2366 | if (l->u.offset > offset) | |
2367 | break; | |
2368 | *line_ptr = l->line_number + line_base - 1; | |
2369 | } | |
2370 | l++; | |
2371 | } | |
798c1fb8 ILT |
2372 | |
2373 | /* If we fell off the end of the loop, then assume that this | |
2374 | symbol has no line number info. Otherwise, symbols with no | |
2375 | line number info get reported with the line number of the | |
2376 | last line of the last symbol which does have line number | |
2377 | info. We use 0x100 as a slop to account for cases where the | |
2378 | last line has executable code. */ | |
2379 | if (i >= section->lineno_count | |
2380 | && last_value != 0 | |
2381 | && offset - last_value > 0x100) | |
2382 | { | |
2383 | *functionname_ptr = NULL; | |
2384 | *line_ptr = 0; | |
2385 | } | |
252b5132 RH |
2386 | } |
2387 | ||
2388 | /* Cache the results for the next call. */ | |
2389 | if (sec_data == NULL && section->owner == abfd) | |
2390 | { | |
dc810e39 | 2391 | amt = sizeof (struct coff_section_tdata); |
c8e7bf0d | 2392 | section->used_by_bfd = bfd_zalloc (abfd, amt); |
252b5132 RH |
2393 | sec_data = (struct coff_section_tdata *) section->used_by_bfd; |
2394 | } | |
2395 | if (sec_data != NULL) | |
2396 | { | |
2397 | sec_data->offset = offset; | |
70df0c05 | 2398 | sec_data->i = i - 1; |
252b5132 RH |
2399 | sec_data->function = *functionname_ptr; |
2400 | sec_data->line_base = line_base; | |
2401 | } | |
2402 | ||
b34976b6 | 2403 | return TRUE; |
252b5132 RH |
2404 | } |
2405 | ||
fc28f9aa TG |
2406 | bfd_boolean |
2407 | coff_find_nearest_line (bfd *abfd, | |
2408 | asection *section, | |
2409 | asymbol **symbols, | |
2410 | bfd_vma offset, | |
2411 | const char **filename_ptr, | |
2412 | const char **functionname_ptr, | |
2413 | unsigned int *line_ptr) | |
2414 | { | |
2415 | return coff_find_nearest_line_with_names (abfd, dwarf_debug_sections, | |
2416 | section, symbols, offset, | |
2417 | filename_ptr, functionname_ptr, | |
2418 | line_ptr); | |
2419 | } | |
2420 | ||
a29a8af8 KT |
2421 | bfd_boolean |
2422 | coff_find_nearest_line_discriminator (bfd *abfd, | |
2423 | asection *section, | |
2424 | asymbol **symbols, | |
2425 | bfd_vma offset, | |
2426 | const char **filename_ptr, | |
2427 | const char **functionname_ptr, | |
2428 | unsigned int *line_ptr, | |
2429 | unsigned int *discriminator) | |
2430 | { | |
2431 | *discriminator = 0; | |
2432 | return coff_find_nearest_line_with_names (abfd, dwarf_debug_sections, | |
2433 | section, symbols, offset, | |
2434 | filename_ptr, functionname_ptr, | |
2435 | line_ptr); | |
2436 | } | |
2437 | ||
2438 | ||
4ab527b0 FF |
2439 | bfd_boolean |
2440 | coff_find_inliner_info (bfd *abfd, | |
2441 | const char **filename_ptr, | |
2442 | const char **functionname_ptr, | |
2443 | unsigned int *line_ptr) | |
2444 | { | |
2445 | bfd_boolean found; | |
2446 | ||
2447 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
2448 | functionname_ptr, line_ptr, | |
2449 | &coff_data(abfd)->dwarf2_find_line_info); | |
2450 | return (found); | |
2451 | } | |
2452 | ||
252b5132 | 2453 | int |
a6b96beb | 2454 | coff_sizeof_headers (bfd *abfd, struct bfd_link_info *info) |
252b5132 RH |
2455 | { |
2456 | size_t size; | |
2457 | ||
a6b96beb | 2458 | if (!info->relocatable) |
c8e7bf0d | 2459 | size = bfd_coff_filhsz (abfd) + bfd_coff_aoutsz (abfd); |
252b5132 | 2460 | else |
c8e7bf0d | 2461 | size = bfd_coff_filhsz (abfd); |
252b5132 RH |
2462 | |
2463 | size += abfd->section_count * bfd_coff_scnhsz (abfd); | |
2464 | return size; | |
2465 | } | |
2466 | ||
2467 | /* Change the class of a coff symbol held by BFD. */ | |
c8e7bf0d | 2468 | |
b34976b6 | 2469 | bfd_boolean |
c8e7bf0d NC |
2470 | bfd_coff_set_symbol_class (bfd * abfd, |
2471 | asymbol * symbol, | |
96d56e9f | 2472 | unsigned int symbol_class) |
252b5132 RH |
2473 | { |
2474 | coff_symbol_type * csym; | |
2475 | ||
2476 | csym = coff_symbol_from (abfd, symbol); | |
2477 | if (csym == NULL) | |
2478 | { | |
2479 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 2480 | return FALSE; |
252b5132 RH |
2481 | } |
2482 | else if (csym->native == NULL) | |
2483 | { | |
2484 | /* This is an alien symbol which no native coff backend data. | |
2485 | We cheat here by creating a fake native entry for it and | |
2486 | then filling in the class. This code is based on that in | |
2487 | coff_write_alien_symbol(). */ | |
244148ad | 2488 | |
252b5132 | 2489 | combined_entry_type * native; |
dc810e39 | 2490 | bfd_size_type amt = sizeof (* native); |
252b5132 | 2491 | |
a50b1753 | 2492 | native = (combined_entry_type *) bfd_zalloc (abfd, amt); |
252b5132 | 2493 | if (native == NULL) |
b34976b6 | 2494 | return FALSE; |
252b5132 | 2495 | |
252b5132 | 2496 | native->u.syment.n_type = T_NULL; |
96d56e9f | 2497 | native->u.syment.n_sclass = symbol_class; |
244148ad | 2498 | |
252b5132 RH |
2499 | if (bfd_is_und_section (symbol->section)) |
2500 | { | |
2501 | native->u.syment.n_scnum = N_UNDEF; | |
2502 | native->u.syment.n_value = symbol->value; | |
2503 | } | |
2504 | else if (bfd_is_com_section (symbol->section)) | |
2505 | { | |
2506 | native->u.syment.n_scnum = N_UNDEF; | |
2507 | native->u.syment.n_value = symbol->value; | |
2508 | } | |
2509 | else | |
2510 | { | |
2511 | native->u.syment.n_scnum = | |
2512 | symbol->section->output_section->target_index; | |
2513 | native->u.syment.n_value = (symbol->value | |
2514 | + symbol->section->output_offset); | |
2515 | if (! obj_pe (abfd)) | |
2516 | native->u.syment.n_value += symbol->section->output_section->vma; | |
244148ad | 2517 | |
08da05b0 | 2518 | /* Copy the any flags from the file header into the symbol. |
252b5132 RH |
2519 | FIXME: Why? */ |
2520 | native->u.syment.n_flags = bfd_asymbol_bfd (& csym->symbol)->flags; | |
2521 | } | |
244148ad | 2522 | |
252b5132 RH |
2523 | csym->native = native; |
2524 | } | |
2525 | else | |
96d56e9f | 2526 | csym->native->u.syment.n_sclass = symbol_class; |
244148ad | 2527 | |
b34976b6 | 2528 | return TRUE; |
252b5132 | 2529 | } |
082b7297 L |
2530 | |
2531 | struct coff_comdat_info * | |
2532 | bfd_coff_get_comdat_section (bfd *abfd, struct bfd_section *sec) | |
2533 | { | |
fedf8d51 AM |
2534 | if (bfd_get_flavour (abfd) == bfd_target_coff_flavour |
2535 | && coff_section_data (abfd, sec) != NULL) | |
082b7297 L |
2536 | return coff_section_data (abfd, sec)->comdat; |
2537 | else | |
2538 | return NULL; | |
2539 | } | |
c77ec726 AM |
2540 | |
2541 | bfd_boolean | |
2542 | _bfd_coff_section_already_linked (bfd *abfd, | |
2543 | asection *sec, | |
2544 | struct bfd_link_info *info) | |
2545 | { | |
2546 | flagword flags; | |
2547 | const char *name, *key; | |
2548 | struct bfd_section_already_linked *l; | |
2549 | struct bfd_section_already_linked_hash_entry *already_linked_list; | |
2550 | struct coff_comdat_info *s_comdat; | |
2551 | ||
2552 | flags = sec->flags; | |
2553 | if ((flags & SEC_LINK_ONCE) == 0) | |
2554 | return FALSE; | |
2555 | ||
2556 | /* The COFF backend linker doesn't support group sections. */ | |
2557 | if ((flags & SEC_GROUP) != 0) | |
2558 | return FALSE; | |
2559 | ||
2560 | name = bfd_get_section_name (abfd, sec); | |
2561 | s_comdat = bfd_coff_get_comdat_section (abfd, sec); | |
2562 | ||
2563 | if (s_comdat != NULL) | |
2564 | key = s_comdat->name; | |
2565 | else | |
2566 | { | |
2567 | if (CONST_STRNEQ (name, ".gnu.linkonce.") | |
2568 | && (key = strchr (name + sizeof (".gnu.linkonce.") - 1, '.')) != NULL) | |
2569 | key++; | |
2570 | else | |
2571 | /* FIXME: gcc as of 2011-09 emits sections like .text$<key>, | |
2572 | .xdata$<key> and .pdata$<key> only the first of which has a | |
2573 | comdat key. Should these all match the LTO IR key? */ | |
2574 | key = name; | |
2575 | } | |
2576 | ||
2577 | already_linked_list = bfd_section_already_linked_table_lookup (key); | |
2578 | ||
2579 | for (l = already_linked_list->entry; l != NULL; l = l->next) | |
2580 | { | |
2581 | struct coff_comdat_info *l_comdat; | |
2582 | ||
2583 | l_comdat = bfd_coff_get_comdat_section (l->sec->owner, l->sec); | |
2584 | ||
2585 | /* The section names must match, and both sections must be | |
2586 | comdat and have the same comdat name, or both sections must | |
2587 | be non-comdat. LTO IR plugin sections are an exception. They | |
2588 | are always named .gnu.linkonce.t.<key> (<key> is some string) | |
2589 | and match any comdat section with comdat name of <key>, and | |
2590 | any linkonce section with the same suffix, ie. | |
2591 | .gnu.linkonce.*.<key>. */ | |
2592 | if (((s_comdat != NULL) == (l_comdat != NULL) | |
2593 | && strcmp (name, l->sec->name) == 0) | |
2594 | || (l->sec->owner->flags & BFD_PLUGIN) != 0) | |
2595 | { | |
2596 | /* The section has already been linked. See if we should | |
2597 | issue a warning. */ | |
2598 | return _bfd_handle_already_linked (sec, l, info); | |
2599 | } | |
2600 | } | |
2601 | ||
2602 | /* This is the first section with this name. Record it. */ | |
2603 | if (!bfd_section_already_linked_table_insert (already_linked_list, sec)) | |
2604 | info->callbacks->einfo (_("%F%P: already_linked_table: %E\n")); | |
2605 | return FALSE; | |
2606 | } |