Commit | Line | Data |
---|---|---|
c906108c | 1 | /* GDB routines for manipulating objfiles. |
af5f3db6 AC |
2 | |
3 | Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, | |
2de7ced7 | 4 | 2001, 2002, 2003 Free Software Foundation, Inc. |
af5f3db6 | 5 | |
c906108c SS |
6 | Contributed by Cygnus Support, using pieces from other GDB modules. |
7 | ||
c5aa993b | 8 | This file is part of GDB. |
c906108c | 9 | |
c5aa993b JM |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2 of the License, or | |
13 | (at your option) any later version. | |
c906108c | 14 | |
c5aa993b JM |
15 | This program is distributed in the hope that it will be useful, |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
c906108c | 19 | |
c5aa993b JM |
20 | You should have received a copy of the GNU General Public License |
21 | along with this program; if not, write to the Free Software | |
22 | Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
24 | |
25 | /* This file contains support routines for creating, manipulating, and | |
26 | destroying objfile structures. */ | |
27 | ||
28 | #include "defs.h" | |
29 | #include "bfd.h" /* Binary File Description */ | |
30 | #include "symtab.h" | |
31 | #include "symfile.h" | |
32 | #include "objfiles.h" | |
33 | #include "gdb-stabs.h" | |
34 | #include "target.h" | |
af5f3db6 | 35 | #include "bcache.h" |
c906108c SS |
36 | |
37 | #include <sys/types.h> | |
38 | #include "gdb_stat.h" | |
39 | #include <fcntl.h> | |
04ea0df1 | 40 | #include "gdb_obstack.h" |
c906108c | 41 | #include "gdb_string.h" |
2de7ced7 | 42 | #include "hashtab.h" |
c906108c | 43 | |
7a292a7a SS |
44 | #include "breakpoint.h" |
45 | ||
c906108c SS |
46 | /* Prototypes for local functions */ |
47 | ||
48 | #if defined(USE_MMALLOC) && defined(HAVE_MMAP) | |
49 | ||
ed1801df AC |
50 | #include "mmalloc.h" |
51 | ||
a14ed312 | 52 | static int open_existing_mapped_file (char *, long, int); |
c906108c | 53 | |
a14ed312 | 54 | static int open_mapped_file (char *filename, long mtime, int flags); |
c906108c | 55 | |
4efb68b1 | 56 | static void *map_to_file (int); |
c906108c | 57 | |
c5aa993b | 58 | #endif /* defined(USE_MMALLOC) && defined(HAVE_MMAP) */ |
c906108c | 59 | |
4efb68b1 | 60 | static void add_to_objfile_sections (bfd *, sec_ptr, void *); |
c906108c SS |
61 | |
62 | /* Externally visible variables that are owned by this module. | |
63 | See declarations in objfile.h for more info. */ | |
64 | ||
c5aa993b | 65 | struct objfile *object_files; /* Linked list of all objfiles */ |
c906108c SS |
66 | struct objfile *current_objfile; /* For symbol file being read in */ |
67 | struct objfile *symfile_objfile; /* Main symbol table loaded from */ | |
68 | struct objfile *rt_common_objfile; /* For runtime common symbols */ | |
69 | ||
c5aa993b | 70 | int mapped_symbol_files; /* Try to use mapped symbol files */ |
c906108c SS |
71 | |
72 | /* Locate all mappable sections of a BFD file. | |
73 | objfile_p_char is a char * to get it through | |
74 | bfd_map_over_sections; we cast it back to its proper type. */ | |
75 | ||
76 | #ifndef TARGET_KEEP_SECTION | |
77 | #define TARGET_KEEP_SECTION(ASECT) 0 | |
78 | #endif | |
79 | ||
96baa820 JM |
80 | /* Called via bfd_map_over_sections to build up the section table that |
81 | the objfile references. The objfile contains pointers to the start | |
82 | of the table (objfile->sections) and to the first location after | |
83 | the end of the table (objfile->sections_end). */ | |
84 | ||
c906108c | 85 | static void |
4efb68b1 | 86 | add_to_objfile_sections (bfd *abfd, sec_ptr asect, void *objfile_p_char) |
c906108c SS |
87 | { |
88 | struct objfile *objfile = (struct objfile *) objfile_p_char; | |
89 | struct obj_section section; | |
90 | flagword aflag; | |
91 | ||
92 | aflag = bfd_get_section_flags (abfd, asect); | |
93 | ||
c5aa993b | 94 | if (!(aflag & SEC_ALLOC) && !(TARGET_KEEP_SECTION (asect))) |
c906108c SS |
95 | return; |
96 | ||
97 | if (0 == bfd_section_size (abfd, asect)) | |
98 | return; | |
99 | section.offset = 0; | |
100 | section.objfile = objfile; | |
101 | section.the_bfd_section = asect; | |
102 | section.ovly_mapped = 0; | |
103 | section.addr = bfd_section_vma (abfd, asect); | |
104 | section.endaddr = section.addr + bfd_section_size (abfd, asect); | |
c5aa993b | 105 | obstack_grow (&objfile->psymbol_obstack, (char *) §ion, sizeof (section)); |
c906108c SS |
106 | objfile->sections_end = (struct obj_section *) (((unsigned long) objfile->sections_end) + 1); |
107 | } | |
108 | ||
109 | /* Builds a section table for OBJFILE. | |
110 | Returns 0 if OK, 1 on error (in which case bfd_error contains the | |
96baa820 JM |
111 | error). |
112 | ||
113 | Note that while we are building the table, which goes into the | |
114 | psymbol obstack, we hijack the sections_end pointer to instead hold | |
115 | a count of the number of sections. When bfd_map_over_sections | |
116 | returns, this count is used to compute the pointer to the end of | |
117 | the sections table, which then overwrites the count. | |
118 | ||
119 | Also note that the OFFSET and OVLY_MAPPED in each table entry | |
120 | are initialized to zero. | |
121 | ||
122 | Also note that if anything else writes to the psymbol obstack while | |
123 | we are building the table, we're pretty much hosed. */ | |
c906108c SS |
124 | |
125 | int | |
fba45db2 | 126 | build_objfile_section_table (struct objfile *objfile) |
c906108c SS |
127 | { |
128 | /* objfile->sections can be already set when reading a mapped symbol | |
129 | file. I believe that we do need to rebuild the section table in | |
130 | this case (we rebuild other things derived from the bfd), but we | |
131 | can't free the old one (it's in the psymbol_obstack). So we just | |
132 | waste some memory. */ | |
133 | ||
134 | objfile->sections_end = 0; | |
c5aa993b | 135 | bfd_map_over_sections (objfile->obfd, add_to_objfile_sections, (char *) objfile); |
c906108c SS |
136 | objfile->sections = (struct obj_section *) |
137 | obstack_finish (&objfile->psymbol_obstack); | |
138 | objfile->sections_end = objfile->sections + (unsigned long) objfile->sections_end; | |
c5aa993b | 139 | return (0); |
c906108c SS |
140 | } |
141 | ||
2df3850c JM |
142 | /* Given a pointer to an initialized bfd (ABFD) and some flag bits |
143 | allocate a new objfile struct, fill it in as best we can, link it | |
144 | into the list of all known objfiles, and return a pointer to the | |
145 | new objfile struct. | |
c906108c | 146 | |
2df3850c JM |
147 | The FLAGS word contains various bits (OBJF_*) that can be taken as |
148 | requests for specific operations, like trying to open a mapped | |
149 | version of the objfile (OBJF_MAPPED). Other bits like | |
150 | OBJF_SHARED are simply copied through to the new objfile flags | |
151 | member. */ | |
c906108c SS |
152 | |
153 | struct objfile * | |
fba45db2 | 154 | allocate_objfile (bfd *abfd, int flags) |
c906108c SS |
155 | { |
156 | struct objfile *objfile = NULL; | |
157 | struct objfile *last_one = NULL; | |
158 | ||
2df3850c JM |
159 | if (mapped_symbol_files) |
160 | flags |= OBJF_MAPPED; | |
c906108c SS |
161 | |
162 | #if defined(USE_MMALLOC) && defined(HAVE_MMAP) | |
163 | if (abfd != NULL) | |
c5aa993b | 164 | { |
c906108c | 165 | |
c5aa993b JM |
166 | /* If we can support mapped symbol files, try to open/reopen the |
167 | mapped file that corresponds to the file from which we wish to | |
168 | read symbols. If the objfile is to be mapped, we must malloc | |
169 | the structure itself using the mmap version, and arrange that | |
170 | all memory allocation for the objfile uses the mmap routines. | |
171 | If we are reusing an existing mapped file, from which we get | |
172 | our objfile pointer, we have to make sure that we update the | |
173 | pointers to the alloc/free functions in the obstack, in case | |
174 | these functions have moved within the current gdb. */ | |
175 | ||
176 | int fd; | |
177 | ||
178 | fd = open_mapped_file (bfd_get_filename (abfd), bfd_get_mtime (abfd), | |
2df3850c | 179 | flags); |
c5aa993b JM |
180 | if (fd >= 0) |
181 | { | |
4efb68b1 | 182 | void *md; |
c906108c | 183 | |
c5aa993b JM |
184 | if ((md = map_to_file (fd)) == NULL) |
185 | { | |
186 | close (fd); | |
187 | } | |
188 | else if ((objfile = (struct objfile *) mmalloc_getkey (md, 0)) != NULL) | |
189 | { | |
190 | /* Update memory corruption handler function addresses. */ | |
191 | init_malloc (md); | |
192 | objfile->md = md; | |
193 | objfile->mmfd = fd; | |
194 | /* Update pointers to functions to *our* copies */ | |
2de7ced7 DJ |
195 | if (objfile->demangled_names_hash) |
196 | htab_set_functions_ex | |
197 | (objfile->demangled_names_hash, htab_hash_string, | |
198 | (int (*) (const void *, const void *)) streq, NULL, | |
199 | objfile->md, xmcalloc, xmfree); | |
c5aa993b | 200 | obstack_chunkfun (&objfile->psymbol_cache.cache, xmmalloc); |
aac7f4ea | 201 | obstack_freefun (&objfile->psymbol_cache.cache, xmfree); |
99d9066e JB |
202 | obstack_chunkfun (&objfile->macro_cache.cache, xmmalloc); |
203 | obstack_freefun (&objfile->macro_cache.cache, xmfree); | |
c5aa993b | 204 | obstack_chunkfun (&objfile->psymbol_obstack, xmmalloc); |
aac7f4ea | 205 | obstack_freefun (&objfile->psymbol_obstack, xmfree); |
c5aa993b | 206 | obstack_chunkfun (&objfile->symbol_obstack, xmmalloc); |
aac7f4ea | 207 | obstack_freefun (&objfile->symbol_obstack, xmfree); |
c5aa993b | 208 | obstack_chunkfun (&objfile->type_obstack, xmmalloc); |
aac7f4ea | 209 | obstack_freefun (&objfile->type_obstack, xmfree); |
c5aa993b JM |
210 | /* If already in objfile list, unlink it. */ |
211 | unlink_objfile (objfile); | |
212 | /* Forget things specific to a particular gdb, may have changed. */ | |
213 | objfile->sf = NULL; | |
214 | } | |
215 | else | |
216 | { | |
c906108c | 217 | |
c5aa993b JM |
218 | /* Set up to detect internal memory corruption. MUST be |
219 | done before the first malloc. See comments in | |
220 | init_malloc() and mmcheck(). */ | |
221 | ||
222 | init_malloc (md); | |
223 | ||
224 | objfile = (struct objfile *) | |
225 | xmmalloc (md, sizeof (struct objfile)); | |
226 | memset (objfile, 0, sizeof (struct objfile)); | |
227 | objfile->md = md; | |
228 | objfile->mmfd = fd; | |
229 | objfile->flags |= OBJF_MAPPED; | |
230 | mmalloc_setkey (objfile->md, 0, objfile); | |
231 | obstack_specify_allocation_with_arg (&objfile->psymbol_cache.cache, | |
aac7f4ea | 232 | 0, 0, xmmalloc, xmfree, |
c5aa993b | 233 | objfile->md); |
99d9066e JB |
234 | obstack_specify_allocation_with_arg (&objfile->macro_cache.cache, |
235 | 0, 0, xmmalloc, xmfree, | |
236 | objfile->md); | |
c5aa993b | 237 | obstack_specify_allocation_with_arg (&objfile->psymbol_obstack, |
aac7f4ea | 238 | 0, 0, xmmalloc, xmfree, |
c5aa993b JM |
239 | objfile->md); |
240 | obstack_specify_allocation_with_arg (&objfile->symbol_obstack, | |
aac7f4ea | 241 | 0, 0, xmmalloc, xmfree, |
c5aa993b JM |
242 | objfile->md); |
243 | obstack_specify_allocation_with_arg (&objfile->type_obstack, | |
aac7f4ea | 244 | 0, 0, xmmalloc, xmfree, |
c5aa993b JM |
245 | objfile->md); |
246 | } | |
247 | } | |
c906108c | 248 | |
2df3850c | 249 | if ((flags & OBJF_MAPPED) && (objfile == NULL)) |
c5aa993b JM |
250 | { |
251 | warning ("symbol table for '%s' will not be mapped", | |
252 | bfd_get_filename (abfd)); | |
2df3850c | 253 | flags &= ~OBJF_MAPPED; |
c5aa993b JM |
254 | } |
255 | } | |
256 | #else /* !defined(USE_MMALLOC) || !defined(HAVE_MMAP) */ | |
c906108c | 257 | |
2df3850c | 258 | if (flags & OBJF_MAPPED) |
c906108c SS |
259 | { |
260 | warning ("mapped symbol tables are not supported on this machine; missing or broken mmap()."); | |
261 | ||
262 | /* Turn off the global flag so we don't try to do mapped symbol tables | |
c5aa993b JM |
263 | any more, which shuts up gdb unless the user specifically gives the |
264 | "mapped" keyword again. */ | |
c906108c SS |
265 | |
266 | mapped_symbol_files = 0; | |
2df3850c | 267 | flags &= ~OBJF_MAPPED; |
c906108c SS |
268 | } |
269 | ||
c5aa993b | 270 | #endif /* defined(USE_MMALLOC) && defined(HAVE_MMAP) */ |
c906108c SS |
271 | |
272 | /* If we don't support mapped symbol files, didn't ask for the file to be | |
273 | mapped, or failed to open the mapped file for some reason, then revert | |
274 | back to an unmapped objfile. */ | |
275 | ||
276 | if (objfile == NULL) | |
277 | { | |
278 | objfile = (struct objfile *) xmalloc (sizeof (struct objfile)); | |
279 | memset (objfile, 0, sizeof (struct objfile)); | |
c5aa993b | 280 | objfile->md = NULL; |
af5f3db6 AC |
281 | objfile->psymbol_cache = bcache_xmalloc (); |
282 | objfile->macro_cache = bcache_xmalloc (); | |
c5aa993b | 283 | obstack_specify_allocation (&objfile->psymbol_obstack, 0, 0, xmalloc, |
b8c9b27d | 284 | xfree); |
c5aa993b | 285 | obstack_specify_allocation (&objfile->symbol_obstack, 0, 0, xmalloc, |
b8c9b27d | 286 | xfree); |
c5aa993b | 287 | obstack_specify_allocation (&objfile->type_obstack, 0, 0, xmalloc, |
b8c9b27d | 288 | xfree); |
2df3850c | 289 | flags &= ~OBJF_MAPPED; |
15831452 JB |
290 | |
291 | terminate_minimal_symbol_table (objfile); | |
c906108c SS |
292 | } |
293 | ||
294 | /* Update the per-objfile information that comes from the bfd, ensuring | |
295 | that any data that is reference is saved in the per-objfile data | |
296 | region. */ | |
297 | ||
c5aa993b JM |
298 | objfile->obfd = abfd; |
299 | if (objfile->name != NULL) | |
c906108c | 300 | { |
aac7f4ea | 301 | xmfree (objfile->md, objfile->name); |
c906108c SS |
302 | } |
303 | if (abfd != NULL) | |
304 | { | |
c5aa993b JM |
305 | objfile->name = mstrsave (objfile->md, bfd_get_filename (abfd)); |
306 | objfile->mtime = bfd_get_mtime (abfd); | |
c906108c SS |
307 | |
308 | /* Build section table. */ | |
309 | ||
310 | if (build_objfile_section_table (objfile)) | |
311 | { | |
c5aa993b JM |
312 | error ("Can't find the file sections in `%s': %s", |
313 | objfile->name, bfd_errmsg (bfd_get_error ())); | |
c906108c SS |
314 | } |
315 | } | |
316 | ||
b8fbeb18 EZ |
317 | /* Initialize the section indexes for this objfile, so that we can |
318 | later detect if they are used w/o being properly assigned to. */ | |
319 | ||
320 | objfile->sect_index_text = -1; | |
321 | objfile->sect_index_data = -1; | |
322 | objfile->sect_index_bss = -1; | |
323 | objfile->sect_index_rodata = -1; | |
324 | ||
c906108c SS |
325 | /* Add this file onto the tail of the linked list of other such files. */ |
326 | ||
c5aa993b | 327 | objfile->next = NULL; |
c906108c SS |
328 | if (object_files == NULL) |
329 | object_files = objfile; | |
330 | else | |
331 | { | |
332 | for (last_one = object_files; | |
c5aa993b JM |
333 | last_one->next; |
334 | last_one = last_one->next); | |
335 | last_one->next = objfile; | |
c906108c SS |
336 | } |
337 | ||
2df3850c JM |
338 | /* Save passed in flag bits. */ |
339 | objfile->flags |= flags; | |
c906108c SS |
340 | |
341 | return (objfile); | |
342 | } | |
343 | ||
15831452 JB |
344 | |
345 | /* Create the terminating entry of OBJFILE's minimal symbol table. | |
346 | If OBJFILE->msymbols is zero, allocate a single entry from | |
347 | OBJFILE->symbol_obstack; otherwise, just initialize | |
348 | OBJFILE->msymbols[OBJFILE->minimal_symbol_count]. */ | |
349 | void | |
350 | terminate_minimal_symbol_table (struct objfile *objfile) | |
351 | { | |
352 | if (! objfile->msymbols) | |
353 | objfile->msymbols = ((struct minimal_symbol *) | |
354 | obstack_alloc (&objfile->symbol_obstack, | |
355 | sizeof (objfile->msymbols[0]))); | |
356 | ||
357 | { | |
358 | struct minimal_symbol *m | |
359 | = &objfile->msymbols[objfile->minimal_symbol_count]; | |
360 | ||
361 | memset (m, 0, sizeof (*m)); | |
362 | SYMBOL_NAME (m) = NULL; | |
363 | SYMBOL_VALUE_ADDRESS (m) = 0; | |
364 | MSYMBOL_INFO (m) = NULL; | |
365 | MSYMBOL_TYPE (m) = mst_unknown; | |
366 | SYMBOL_INIT_LANGUAGE_SPECIFIC (m, language_unknown); | |
367 | } | |
368 | } | |
369 | ||
370 | ||
5b5d99cf JB |
371 | /* Put one object file before a specified on in the global list. |
372 | This can be used to make sure an object file is destroyed before | |
373 | another when using ALL_OBJFILES_SAFE to free all objfiles. */ | |
374 | void | |
375 | put_objfile_before (struct objfile *objfile, struct objfile *before_this) | |
376 | { | |
377 | struct objfile **objp; | |
378 | ||
379 | unlink_objfile (objfile); | |
380 | ||
381 | for (objp = &object_files; *objp != NULL; objp = &((*objp)->next)) | |
382 | { | |
383 | if (*objp == before_this) | |
384 | { | |
385 | objfile->next = *objp; | |
386 | *objp = objfile; | |
387 | return; | |
388 | } | |
389 | } | |
390 | ||
391 | internal_error (__FILE__, __LINE__, | |
392 | "put_objfile_before: before objfile not in list"); | |
393 | } | |
394 | ||
c906108c SS |
395 | /* Put OBJFILE at the front of the list. */ |
396 | ||
397 | void | |
fba45db2 | 398 | objfile_to_front (struct objfile *objfile) |
c906108c SS |
399 | { |
400 | struct objfile **objp; | |
401 | for (objp = &object_files; *objp != NULL; objp = &((*objp)->next)) | |
402 | { | |
403 | if (*objp == objfile) | |
404 | { | |
405 | /* Unhook it from where it is. */ | |
406 | *objp = objfile->next; | |
407 | /* Put it in the front. */ | |
408 | objfile->next = object_files; | |
409 | object_files = objfile; | |
410 | break; | |
411 | } | |
412 | } | |
413 | } | |
414 | ||
415 | /* Unlink OBJFILE from the list of known objfiles, if it is found in the | |
416 | list. | |
417 | ||
418 | It is not a bug, or error, to call this function if OBJFILE is not known | |
419 | to be in the current list. This is done in the case of mapped objfiles, | |
420 | for example, just to ensure that the mapped objfile doesn't appear twice | |
421 | in the list. Since the list is threaded, linking in a mapped objfile | |
422 | twice would create a circular list. | |
423 | ||
424 | If OBJFILE turns out to be in the list, we zap it's NEXT pointer after | |
425 | unlinking it, just to ensure that we have completely severed any linkages | |
426 | between the OBJFILE and the list. */ | |
427 | ||
428 | void | |
fba45db2 | 429 | unlink_objfile (struct objfile *objfile) |
c906108c | 430 | { |
c5aa993b | 431 | struct objfile **objpp; |
c906108c | 432 | |
c5aa993b | 433 | for (objpp = &object_files; *objpp != NULL; objpp = &((*objpp)->next)) |
c906108c | 434 | { |
c5aa993b | 435 | if (*objpp == objfile) |
c906108c | 436 | { |
c5aa993b JM |
437 | *objpp = (*objpp)->next; |
438 | objfile->next = NULL; | |
07cd4b97 | 439 | return; |
c906108c SS |
440 | } |
441 | } | |
07cd4b97 | 442 | |
8e65ff28 AC |
443 | internal_error (__FILE__, __LINE__, |
444 | "unlink_objfile: objfile already unlinked"); | |
c906108c SS |
445 | } |
446 | ||
447 | ||
448 | /* Destroy an objfile and all the symtabs and psymtabs under it. Note | |
449 | that as much as possible is allocated on the symbol_obstack and | |
450 | psymbol_obstack, so that the memory can be efficiently freed. | |
451 | ||
452 | Things which we do NOT free because they are not in malloc'd memory | |
453 | or not in memory specific to the objfile include: | |
454 | ||
c5aa993b | 455 | objfile -> sf |
c906108c SS |
456 | |
457 | FIXME: If the objfile is using reusable symbol information (via mmalloc), | |
458 | then we need to take into account the fact that more than one process | |
459 | may be using the symbol information at the same time (when mmalloc is | |
460 | extended to support cooperative locking). When more than one process | |
461 | is using the mapped symbol info, we need to be more careful about when | |
462 | we free objects in the reusable area. */ | |
463 | ||
464 | void | |
fba45db2 | 465 | free_objfile (struct objfile *objfile) |
c906108c | 466 | { |
5b5d99cf JB |
467 | if (objfile->separate_debug_objfile) |
468 | { | |
469 | free_objfile (objfile->separate_debug_objfile); | |
470 | } | |
471 | ||
472 | if (objfile->separate_debug_objfile_backlink) | |
473 | { | |
474 | /* We freed the separate debug file, make sure the base objfile | |
475 | doesn't reference it. */ | |
476 | objfile->separate_debug_objfile_backlink->separate_debug_objfile = NULL; | |
477 | } | |
478 | ||
c906108c SS |
479 | /* First do any symbol file specific actions required when we are |
480 | finished with a particular symbol file. Note that if the objfile | |
481 | is using reusable symbol information (via mmalloc) then each of | |
482 | these routines is responsible for doing the correct thing, either | |
483 | freeing things which are valid only during this particular gdb | |
484 | execution, or leaving them to be reused during the next one. */ | |
485 | ||
c5aa993b | 486 | if (objfile->sf != NULL) |
c906108c | 487 | { |
c5aa993b | 488 | (*objfile->sf->sym_finish) (objfile); |
c906108c SS |
489 | } |
490 | ||
491 | /* We always close the bfd. */ | |
492 | ||
c5aa993b | 493 | if (objfile->obfd != NULL) |
c906108c SS |
494 | { |
495 | char *name = bfd_get_filename (objfile->obfd); | |
c5aa993b | 496 | if (!bfd_close (objfile->obfd)) |
c906108c SS |
497 | warning ("cannot close \"%s\": %s", |
498 | name, bfd_errmsg (bfd_get_error ())); | |
b8c9b27d | 499 | xfree (name); |
c906108c SS |
500 | } |
501 | ||
502 | /* Remove it from the chain of all objfiles. */ | |
503 | ||
504 | unlink_objfile (objfile); | |
505 | ||
506 | /* If we are going to free the runtime common objfile, mark it | |
507 | as unallocated. */ | |
508 | ||
509 | if (objfile == rt_common_objfile) | |
510 | rt_common_objfile = NULL; | |
511 | ||
512 | /* Before the symbol table code was redone to make it easier to | |
513 | selectively load and remove information particular to a specific | |
514 | linkage unit, gdb used to do these things whenever the monolithic | |
515 | symbol table was blown away. How much still needs to be done | |
516 | is unknown, but we play it safe for now and keep each action until | |
517 | it is shown to be no longer needed. */ | |
c5aa993b | 518 | |
c906108c SS |
519 | /* I *think* all our callers call clear_symtab_users. If so, no need |
520 | to call this here. */ | |
521 | clear_pc_function_cache (); | |
522 | ||
523 | /* The last thing we do is free the objfile struct itself for the | |
aac7f4ea AC |
524 | non-reusable case, or detach from the mapped file for the |
525 | reusable case. Note that the mmalloc_detach or the xmfree() is | |
526 | the last thing we can do with this objfile. */ | |
c906108c SS |
527 | |
528 | #if defined(USE_MMALLOC) && defined(HAVE_MMAP) | |
529 | ||
c5aa993b | 530 | if (objfile->flags & OBJF_MAPPED) |
c906108c SS |
531 | { |
532 | /* Remember the fd so we can close it. We can't close it before | |
c5aa993b | 533 | doing the detach, and after the detach the objfile is gone. */ |
c906108c SS |
534 | int mmfd; |
535 | ||
c5aa993b JM |
536 | mmfd = objfile->mmfd; |
537 | mmalloc_detach (objfile->md); | |
c906108c SS |
538 | objfile = NULL; |
539 | close (mmfd); | |
540 | } | |
541 | ||
c5aa993b | 542 | #endif /* defined(USE_MMALLOC) && defined(HAVE_MMAP) */ |
c906108c SS |
543 | |
544 | /* If we still have an objfile, then either we don't support reusable | |
545 | objfiles or this one was not reusable. So free it normally. */ | |
546 | ||
547 | if (objfile != NULL) | |
548 | { | |
c5aa993b | 549 | if (objfile->name != NULL) |
c906108c | 550 | { |
aac7f4ea | 551 | xmfree (objfile->md, objfile->name); |
c906108c SS |
552 | } |
553 | if (objfile->global_psymbols.list) | |
aac7f4ea | 554 | xmfree (objfile->md, objfile->global_psymbols.list); |
c906108c | 555 | if (objfile->static_psymbols.list) |
aac7f4ea | 556 | xmfree (objfile->md, objfile->static_psymbols.list); |
c906108c | 557 | /* Free the obstacks for non-reusable objfiles */ |
af5f3db6 AC |
558 | bcache_xfree (objfile->psymbol_cache); |
559 | bcache_xfree (objfile->macro_cache); | |
2de7ced7 DJ |
560 | if (objfile->demangled_names_hash) |
561 | htab_delete (objfile->demangled_names_hash); | |
c5aa993b JM |
562 | obstack_free (&objfile->psymbol_obstack, 0); |
563 | obstack_free (&objfile->symbol_obstack, 0); | |
564 | obstack_free (&objfile->type_obstack, 0); | |
aac7f4ea | 565 | xmfree (objfile->md, objfile); |
c906108c SS |
566 | objfile = NULL; |
567 | } | |
568 | } | |
569 | ||
74b7792f AC |
570 | static void |
571 | do_free_objfile_cleanup (void *obj) | |
572 | { | |
573 | free_objfile (obj); | |
574 | } | |
575 | ||
576 | struct cleanup * | |
577 | make_cleanup_free_objfile (struct objfile *obj) | |
578 | { | |
579 | return make_cleanup (do_free_objfile_cleanup, obj); | |
580 | } | |
c906108c SS |
581 | |
582 | /* Free all the object files at once and clean up their users. */ | |
583 | ||
584 | void | |
fba45db2 | 585 | free_all_objfiles (void) |
c906108c SS |
586 | { |
587 | struct objfile *objfile, *temp; | |
588 | ||
589 | ALL_OBJFILES_SAFE (objfile, temp) | |
c5aa993b JM |
590 | { |
591 | free_objfile (objfile); | |
592 | } | |
c906108c SS |
593 | clear_symtab_users (); |
594 | } | |
595 | \f | |
596 | /* Relocate OBJFILE to NEW_OFFSETS. There should be OBJFILE->NUM_SECTIONS | |
597 | entries in new_offsets. */ | |
598 | void | |
fba45db2 | 599 | objfile_relocate (struct objfile *objfile, struct section_offsets *new_offsets) |
c906108c | 600 | { |
d4f3574e SS |
601 | struct section_offsets *delta = |
602 | (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); | |
c906108c SS |
603 | |
604 | { | |
605 | int i; | |
606 | int something_changed = 0; | |
607 | for (i = 0; i < objfile->num_sections; ++i) | |
608 | { | |
a4c8257b | 609 | delta->offsets[i] = |
c906108c SS |
610 | ANOFFSET (new_offsets, i) - ANOFFSET (objfile->section_offsets, i); |
611 | if (ANOFFSET (delta, i) != 0) | |
612 | something_changed = 1; | |
613 | } | |
614 | if (!something_changed) | |
615 | return; | |
616 | } | |
617 | ||
618 | /* OK, get all the symtabs. */ | |
619 | { | |
620 | struct symtab *s; | |
621 | ||
622 | ALL_OBJFILE_SYMTABS (objfile, s) | |
c5aa993b JM |
623 | { |
624 | struct linetable *l; | |
625 | struct blockvector *bv; | |
626 | int i; | |
627 | ||
628 | /* First the line table. */ | |
629 | l = LINETABLE (s); | |
630 | if (l) | |
631 | { | |
632 | for (i = 0; i < l->nitems; ++i) | |
633 | l->item[i].pc += ANOFFSET (delta, s->block_line_section); | |
634 | } | |
c906108c | 635 | |
c5aa993b JM |
636 | /* Don't relocate a shared blockvector more than once. */ |
637 | if (!s->primary) | |
638 | continue; | |
c906108c | 639 | |
c5aa993b JM |
640 | bv = BLOCKVECTOR (s); |
641 | for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); ++i) | |
642 | { | |
643 | struct block *b; | |
e88c90f2 | 644 | struct symbol *sym; |
c5aa993b JM |
645 | int j; |
646 | ||
647 | b = BLOCKVECTOR_BLOCK (bv, i); | |
648 | BLOCK_START (b) += ANOFFSET (delta, s->block_line_section); | |
649 | BLOCK_END (b) += ANOFFSET (delta, s->block_line_section); | |
650 | ||
e88c90f2 | 651 | ALL_BLOCK_SYMBOLS (b, j, sym) |
c5aa993b | 652 | { |
7a78d0ee KB |
653 | fixup_symbol_section (sym, objfile); |
654 | ||
c5aa993b JM |
655 | /* The RS6000 code from which this was taken skipped |
656 | any symbols in STRUCT_NAMESPACE or UNDEF_NAMESPACE. | |
657 | But I'm leaving out that test, on the theory that | |
658 | they can't possibly pass the tests below. */ | |
659 | if ((SYMBOL_CLASS (sym) == LOC_LABEL | |
660 | || SYMBOL_CLASS (sym) == LOC_STATIC | |
661 | || SYMBOL_CLASS (sym) == LOC_INDIRECT) | |
662 | && SYMBOL_SECTION (sym) >= 0) | |
663 | { | |
664 | SYMBOL_VALUE_ADDRESS (sym) += | |
665 | ANOFFSET (delta, SYMBOL_SECTION (sym)); | |
666 | } | |
c906108c | 667 | #ifdef MIPS_EFI_SYMBOL_NAME |
c5aa993b | 668 | /* Relocate Extra Function Info for ecoff. */ |
c906108c | 669 | |
c5aa993b JM |
670 | else if (SYMBOL_CLASS (sym) == LOC_CONST |
671 | && SYMBOL_NAMESPACE (sym) == LABEL_NAMESPACE | |
494b7ec9 | 672 | && strcmp (SYMBOL_NAME (sym), MIPS_EFI_SYMBOL_NAME) == 0) |
c5aa993b | 673 | ecoff_relocate_efi (sym, ANOFFSET (delta, |
c906108c SS |
674 | s->block_line_section)); |
675 | #endif | |
c5aa993b JM |
676 | } |
677 | } | |
678 | } | |
c906108c SS |
679 | } |
680 | ||
681 | { | |
682 | struct partial_symtab *p; | |
683 | ||
684 | ALL_OBJFILE_PSYMTABS (objfile, p) | |
c5aa993b | 685 | { |
b8fbeb18 EZ |
686 | p->textlow += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); |
687 | p->texthigh += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); | |
c5aa993b | 688 | } |
c906108c SS |
689 | } |
690 | ||
691 | { | |
692 | struct partial_symbol **psym; | |
693 | ||
694 | for (psym = objfile->global_psymbols.list; | |
695 | psym < objfile->global_psymbols.next; | |
696 | psym++) | |
7a78d0ee KB |
697 | { |
698 | fixup_psymbol_section (*psym, objfile); | |
699 | if (SYMBOL_SECTION (*psym) >= 0) | |
700 | SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta, | |
701 | SYMBOL_SECTION (*psym)); | |
702 | } | |
c906108c SS |
703 | for (psym = objfile->static_psymbols.list; |
704 | psym < objfile->static_psymbols.next; | |
705 | psym++) | |
7a78d0ee KB |
706 | { |
707 | fixup_psymbol_section (*psym, objfile); | |
708 | if (SYMBOL_SECTION (*psym) >= 0) | |
709 | SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta, | |
710 | SYMBOL_SECTION (*psym)); | |
711 | } | |
c906108c SS |
712 | } |
713 | ||
714 | { | |
715 | struct minimal_symbol *msym; | |
716 | ALL_OBJFILE_MSYMBOLS (objfile, msym) | |
717 | if (SYMBOL_SECTION (msym) >= 0) | |
c5aa993b | 718 | SYMBOL_VALUE_ADDRESS (msym) += ANOFFSET (delta, SYMBOL_SECTION (msym)); |
c906108c SS |
719 | } |
720 | /* Relocating different sections by different amounts may cause the symbols | |
721 | to be out of order. */ | |
722 | msymbols_sort (objfile); | |
723 | ||
724 | { | |
725 | int i; | |
726 | for (i = 0; i < objfile->num_sections; ++i) | |
a4c8257b | 727 | (objfile->section_offsets)->offsets[i] = ANOFFSET (new_offsets, i); |
c906108c SS |
728 | } |
729 | ||
36b0c0e0 PS |
730 | if (objfile->ei.entry_point != ~(CORE_ADDR) 0) |
731 | { | |
732 | /* Relocate ei.entry_point with its section offset, use SECT_OFF_TEXT | |
733 | only as a fallback. */ | |
734 | struct obj_section *s; | |
735 | s = find_pc_section (objfile->ei.entry_point); | |
736 | if (s) | |
737 | objfile->ei.entry_point += ANOFFSET (delta, s->the_bfd_section->index); | |
738 | else | |
739 | objfile->ei.entry_point += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); | |
740 | } | |
741 | ||
c906108c SS |
742 | { |
743 | struct obj_section *s; | |
744 | bfd *abfd; | |
745 | ||
746 | abfd = objfile->obfd; | |
747 | ||
96baa820 | 748 | ALL_OBJFILE_OSECTIONS (objfile, s) |
c906108c | 749 | { |
78f0949b KB |
750 | int idx = s->the_bfd_section->index; |
751 | ||
752 | s->addr += ANOFFSET (delta, idx); | |
753 | s->endaddr += ANOFFSET (delta, idx); | |
c906108c SS |
754 | } |
755 | } | |
756 | ||
c906108c SS |
757 | if (objfile->ei.entry_func_lowpc != INVALID_ENTRY_LOWPC) |
758 | { | |
b8fbeb18 EZ |
759 | objfile->ei.entry_func_lowpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); |
760 | objfile->ei.entry_func_highpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
761 | } |
762 | ||
763 | if (objfile->ei.entry_file_lowpc != INVALID_ENTRY_LOWPC) | |
764 | { | |
b8fbeb18 EZ |
765 | objfile->ei.entry_file_lowpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); |
766 | objfile->ei.entry_file_highpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
767 | } |
768 | ||
769 | if (objfile->ei.main_func_lowpc != INVALID_ENTRY_LOWPC) | |
770 | { | |
b8fbeb18 EZ |
771 | objfile->ei.main_func_lowpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); |
772 | objfile->ei.main_func_highpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
773 | } |
774 | ||
775 | /* Relocate breakpoints as necessary, after things are relocated. */ | |
776 | breakpoint_re_set (); | |
777 | } | |
778 | \f | |
779 | /* Many places in gdb want to test just to see if we have any partial | |
780 | symbols available. This function returns zero if none are currently | |
781 | available, nonzero otherwise. */ | |
782 | ||
783 | int | |
fba45db2 | 784 | have_partial_symbols (void) |
c906108c SS |
785 | { |
786 | struct objfile *ofp; | |
787 | ||
788 | ALL_OBJFILES (ofp) | |
c5aa993b JM |
789 | { |
790 | if (ofp->psymtabs != NULL) | |
791 | { | |
792 | return 1; | |
793 | } | |
794 | } | |
c906108c SS |
795 | return 0; |
796 | } | |
797 | ||
798 | /* Many places in gdb want to test just to see if we have any full | |
799 | symbols available. This function returns zero if none are currently | |
800 | available, nonzero otherwise. */ | |
801 | ||
802 | int | |
fba45db2 | 803 | have_full_symbols (void) |
c906108c SS |
804 | { |
805 | struct objfile *ofp; | |
806 | ||
807 | ALL_OBJFILES (ofp) | |
c5aa993b JM |
808 | { |
809 | if (ofp->symtabs != NULL) | |
810 | { | |
811 | return 1; | |
812 | } | |
813 | } | |
c906108c SS |
814 | return 0; |
815 | } | |
816 | ||
817 | ||
818 | /* This operations deletes all objfile entries that represent solibs that | |
819 | weren't explicitly loaded by the user, via e.g., the add-symbol-file | |
820 | command. | |
c5aa993b | 821 | */ |
c906108c | 822 | void |
fba45db2 | 823 | objfile_purge_solibs (void) |
c906108c | 824 | { |
c5aa993b JM |
825 | struct objfile *objf; |
826 | struct objfile *temp; | |
c906108c SS |
827 | |
828 | ALL_OBJFILES_SAFE (objf, temp) | |
829 | { | |
830 | /* We assume that the solib package has been purged already, or will | |
831 | be soon. | |
c5aa993b | 832 | */ |
2df3850c | 833 | if (!(objf->flags & OBJF_USERLOADED) && (objf->flags & OBJF_SHARED)) |
c906108c SS |
834 | free_objfile (objf); |
835 | } | |
836 | } | |
837 | ||
838 | ||
839 | /* Many places in gdb want to test just to see if we have any minimal | |
840 | symbols available. This function returns zero if none are currently | |
841 | available, nonzero otherwise. */ | |
842 | ||
843 | int | |
fba45db2 | 844 | have_minimal_symbols (void) |
c906108c SS |
845 | { |
846 | struct objfile *ofp; | |
847 | ||
848 | ALL_OBJFILES (ofp) | |
c5aa993b | 849 | { |
15831452 | 850 | if (ofp->minimal_symbol_count > 0) |
c5aa993b JM |
851 | { |
852 | return 1; | |
853 | } | |
854 | } | |
c906108c SS |
855 | return 0; |
856 | } | |
857 | ||
858 | #if defined(USE_MMALLOC) && defined(HAVE_MMAP) | |
859 | ||
860 | /* Given the name of a mapped symbol file in SYMSFILENAME, and the timestamp | |
861 | of the corresponding symbol file in MTIME, try to open an existing file | |
862 | with the name SYMSFILENAME and verify it is more recent than the base | |
863 | file by checking it's timestamp against MTIME. | |
864 | ||
865 | If SYMSFILENAME does not exist (or can't be stat'd), simply returns -1. | |
866 | ||
867 | If SYMSFILENAME does exist, but is out of date, we check to see if the | |
868 | user has specified creation of a mapped file. If so, we don't issue | |
869 | any warning message because we will be creating a new mapped file anyway, | |
870 | overwriting the old one. If not, then we issue a warning message so that | |
871 | the user will know why we aren't using this existing mapped symbol file. | |
872 | In either case, we return -1. | |
873 | ||
874 | If SYMSFILENAME does exist and is not out of date, but can't be opened for | |
875 | some reason, then prints an appropriate system error message and returns -1. | |
876 | ||
877 | Otherwise, returns the open file descriptor. */ | |
878 | ||
879 | static int | |
fba45db2 | 880 | open_existing_mapped_file (char *symsfilename, long mtime, int flags) |
c906108c SS |
881 | { |
882 | int fd = -1; | |
883 | struct stat sbuf; | |
884 | ||
885 | if (stat (symsfilename, &sbuf) == 0) | |
886 | { | |
887 | if (sbuf.st_mtime < mtime) | |
888 | { | |
2df3850c | 889 | if (!(flags & OBJF_MAPPED)) |
c906108c SS |
890 | { |
891 | warning ("mapped symbol file `%s' is out of date, ignored it", | |
892 | symsfilename); | |
893 | } | |
894 | } | |
895 | else if ((fd = open (symsfilename, O_RDWR)) < 0) | |
896 | { | |
897 | if (error_pre_print) | |
898 | { | |
899 | printf_unfiltered (error_pre_print); | |
900 | } | |
901 | print_sys_errmsg (symsfilename, errno); | |
902 | } | |
903 | } | |
904 | return (fd); | |
905 | } | |
906 | ||
907 | /* Look for a mapped symbol file that corresponds to FILENAME and is more | |
908 | recent than MTIME. If MAPPED is nonzero, the user has asked that gdb | |
909 | use a mapped symbol file for this file, so create a new one if one does | |
910 | not currently exist. | |
911 | ||
912 | If found, then return an open file descriptor for the file, otherwise | |
913 | return -1. | |
914 | ||
915 | This routine is responsible for implementing the policy that generates | |
916 | the name of the mapped symbol file from the name of a file containing | |
917 | symbols that gdb would like to read. Currently this policy is to append | |
918 | ".syms" to the name of the file. | |
919 | ||
920 | This routine is also responsible for implementing the policy that | |
921 | determines where the mapped symbol file is found (the search path). | |
922 | This policy is that when reading an existing mapped file, a file of | |
923 | the correct name in the current directory takes precedence over a | |
924 | file of the correct name in the same directory as the symbol file. | |
925 | When creating a new mapped file, it is always created in the current | |
926 | directory. This helps to minimize the chances of a user unknowingly | |
927 | creating big mapped files in places like /bin and /usr/local/bin, and | |
928 | allows a local copy to override a manually installed global copy (in | |
929 | /bin for example). */ | |
930 | ||
931 | static int | |
fba45db2 | 932 | open_mapped_file (char *filename, long mtime, int flags) |
c906108c SS |
933 | { |
934 | int fd; | |
935 | char *symsfilename; | |
936 | ||
937 | /* First try to open an existing file in the current directory, and | |
938 | then try the directory where the symbol file is located. */ | |
939 | ||
bdda63b0 | 940 | symsfilename = concat ("./", lbasename (filename), ".syms", (char *) NULL); |
2df3850c | 941 | if ((fd = open_existing_mapped_file (symsfilename, mtime, flags)) < 0) |
c906108c | 942 | { |
b8c9b27d | 943 | xfree (symsfilename); |
c906108c | 944 | symsfilename = concat (filename, ".syms", (char *) NULL); |
2fc18c15 | 945 | fd = open_existing_mapped_file (symsfilename, mtime, flags); |
c906108c SS |
946 | } |
947 | ||
948 | /* If we don't have an open file by now, then either the file does not | |
949 | already exist, or the base file has changed since it was created. In | |
950 | either case, if the user has specified use of a mapped file, then | |
951 | create a new mapped file, truncating any existing one. If we can't | |
952 | create one, print a system error message saying why we can't. | |
953 | ||
954 | By default the file is rw for everyone, with the user's umask taking | |
955 | care of turning off the permissions the user wants off. */ | |
956 | ||
2fc18c15 | 957 | if ((fd < 0) && (flags & OBJF_MAPPED)) |
c906108c | 958 | { |
b8c9b27d | 959 | xfree (symsfilename); |
bdda63b0 | 960 | symsfilename = concat ("./", lbasename (filename), ".syms", |
c906108c SS |
961 | (char *) NULL); |
962 | if ((fd = open (symsfilename, O_RDWR | O_CREAT | O_TRUNC, 0666)) < 0) | |
963 | { | |
964 | if (error_pre_print) | |
965 | { | |
966 | printf_unfiltered (error_pre_print); | |
967 | } | |
968 | print_sys_errmsg (symsfilename, errno); | |
969 | } | |
970 | } | |
971 | ||
b8c9b27d | 972 | xfree (symsfilename); |
c906108c SS |
973 | return (fd); |
974 | } | |
975 | ||
4efb68b1 | 976 | static void * |
fba45db2 | 977 | map_to_file (int fd) |
c906108c | 978 | { |
4efb68b1 | 979 | void *md; |
c906108c SS |
980 | CORE_ADDR mapto; |
981 | ||
4efb68b1 | 982 | md = mmalloc_attach (fd, 0); |
c906108c SS |
983 | if (md != NULL) |
984 | { | |
985 | mapto = (CORE_ADDR) mmalloc_getkey (md, 1); | |
986 | md = mmalloc_detach (md); | |
987 | if (md != NULL) | |
988 | { | |
989 | /* FIXME: should figure out why detach failed */ | |
990 | md = NULL; | |
991 | } | |
992 | else if (mapto != (CORE_ADDR) NULL) | |
993 | { | |
994 | /* This mapping file needs to be remapped at "mapto" */ | |
4efb68b1 | 995 | md = mmalloc_attach (fd, mapto); |
c906108c SS |
996 | } |
997 | else | |
998 | { | |
999 | /* This is a freshly created mapping file. */ | |
1000 | mapto = (CORE_ADDR) mmalloc_findbase (20 * 1024 * 1024); | |
1001 | if (mapto != 0) | |
1002 | { | |
1003 | /* To avoid reusing the freshly created mapping file, at the | |
c5aa993b JM |
1004 | address selected by mmap, we must truncate it before trying |
1005 | to do an attach at the address we want. */ | |
c906108c | 1006 | ftruncate (fd, 0); |
4efb68b1 | 1007 | md = mmalloc_attach (fd, mapto); |
c906108c SS |
1008 | if (md != NULL) |
1009 | { | |
4efb68b1 | 1010 | mmalloc_setkey (md, 1, mapto); |
c906108c SS |
1011 | } |
1012 | } | |
1013 | } | |
1014 | } | |
1015 | return (md); | |
1016 | } | |
1017 | ||
c5aa993b | 1018 | #endif /* defined(USE_MMALLOC) && defined(HAVE_MMAP) */ |
c906108c SS |
1019 | |
1020 | /* Returns a section whose range includes PC and SECTION, | |
1021 | or NULL if none found. Note the distinction between the return type, | |
1022 | struct obj_section (which is defined in gdb), and the input type | |
1023 | struct sec (which is a bfd-defined data type). The obj_section | |
1024 | contains a pointer to the bfd struct sec section. */ | |
1025 | ||
1026 | struct obj_section * | |
fba45db2 | 1027 | find_pc_sect_section (CORE_ADDR pc, struct sec *section) |
c906108c SS |
1028 | { |
1029 | struct obj_section *s; | |
1030 | struct objfile *objfile; | |
c5aa993b | 1031 | |
96baa820 | 1032 | ALL_OBJSECTIONS (objfile, s) |
c5aa993b JM |
1033 | if ((section == 0 || section == s->the_bfd_section) && |
1034 | s->addr <= pc && pc < s->endaddr) | |
c5aa993b | 1035 | return (s); |
c906108c | 1036 | |
c5aa993b | 1037 | return (NULL); |
c906108c SS |
1038 | } |
1039 | ||
1040 | /* Returns a section whose range includes PC or NULL if none found. | |
1041 | Backward compatibility, no section. */ | |
1042 | ||
1043 | struct obj_section * | |
fba45db2 | 1044 | find_pc_section (CORE_ADDR pc) |
c906108c SS |
1045 | { |
1046 | return find_pc_sect_section (pc, find_pc_mapped_section (pc)); | |
1047 | } | |
c5aa993b | 1048 | |
c906108c SS |
1049 | |
1050 | /* In SVR4, we recognize a trampoline by it's section name. | |
1051 | That is, if the pc is in a section named ".plt" then we are in | |
1052 | a trampoline. */ | |
1053 | ||
1054 | int | |
fba45db2 | 1055 | in_plt_section (CORE_ADDR pc, char *name) |
c906108c SS |
1056 | { |
1057 | struct obj_section *s; | |
1058 | int retval = 0; | |
c5aa993b JM |
1059 | |
1060 | s = find_pc_section (pc); | |
1061 | ||
c906108c SS |
1062 | retval = (s != NULL |
1063 | && s->the_bfd_section->name != NULL | |
1064 | && STREQ (s->the_bfd_section->name, ".plt")); | |
c5aa993b | 1065 | return (retval); |
c906108c | 1066 | } |
7be570e7 JM |
1067 | |
1068 | /* Return nonzero if NAME is in the import list of OBJFILE. Else | |
1069 | return zero. */ | |
1070 | ||
1071 | int | |
fba45db2 | 1072 | is_in_import_list (char *name, struct objfile *objfile) |
7be570e7 JM |
1073 | { |
1074 | register int i; | |
1075 | ||
1076 | if (!objfile || !name || !*name) | |
1077 | return 0; | |
1078 | ||
1079 | for (i = 0; i < objfile->import_list_size; i++) | |
1080 | if (objfile->import_list[i] && STREQ (name, objfile->import_list[i])) | |
1081 | return 1; | |
1082 | return 0; | |
1083 | } | |
1084 |