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