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, | |
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 | 152 | |
eb9a305d DC |
153 | /* NOTE: carlton/2003-02-04: This function is called with args NULL, 0 |
154 | by jv-lang.c, to create an artificial objfile used to hold | |
155 | information about dynamically-loaded Java classes. Unfortunately, | |
156 | that branch of this function doesn't get tested very frequently, so | |
157 | it's prone to breakage. (E.g. at one time the name was set to NULL | |
158 | in that situation, which broke a loop over all names in the dynamic | |
159 | library loader.) If you change this function, please try to leave | |
160 | things in a consistent state even if abfd is NULL. */ | |
161 | ||
c906108c | 162 | struct objfile * |
fba45db2 | 163 | allocate_objfile (bfd *abfd, int flags) |
c906108c SS |
164 | { |
165 | struct objfile *objfile = NULL; | |
166 | struct objfile *last_one = NULL; | |
167 | ||
2df3850c JM |
168 | if (mapped_symbol_files) |
169 | flags |= OBJF_MAPPED; | |
c906108c SS |
170 | |
171 | #if defined(USE_MMALLOC) && defined(HAVE_MMAP) | |
172 | if (abfd != NULL) | |
c5aa993b | 173 | { |
c906108c | 174 | |
c5aa993b JM |
175 | /* If we can support mapped symbol files, try to open/reopen the |
176 | mapped file that corresponds to the file from which we wish to | |
177 | read symbols. If the objfile is to be mapped, we must malloc | |
178 | the structure itself using the mmap version, and arrange that | |
179 | all memory allocation for the objfile uses the mmap routines. | |
180 | If we are reusing an existing mapped file, from which we get | |
181 | our objfile pointer, we have to make sure that we update the | |
182 | pointers to the alloc/free functions in the obstack, in case | |
183 | these functions have moved within the current gdb. */ | |
184 | ||
185 | int fd; | |
186 | ||
187 | fd = open_mapped_file (bfd_get_filename (abfd), bfd_get_mtime (abfd), | |
2df3850c | 188 | flags); |
c5aa993b JM |
189 | if (fd >= 0) |
190 | { | |
4efb68b1 | 191 | void *md; |
c906108c | 192 | |
c5aa993b JM |
193 | if ((md = map_to_file (fd)) == NULL) |
194 | { | |
195 | close (fd); | |
196 | } | |
197 | else if ((objfile = (struct objfile *) mmalloc_getkey (md, 0)) != NULL) | |
198 | { | |
199 | /* Update memory corruption handler function addresses. */ | |
200 | init_malloc (md); | |
201 | objfile->md = md; | |
202 | objfile->mmfd = fd; | |
203 | /* Update pointers to functions to *our* copies */ | |
2de7ced7 DJ |
204 | if (objfile->demangled_names_hash) |
205 | htab_set_functions_ex | |
206 | (objfile->demangled_names_hash, htab_hash_string, | |
207 | (int (*) (const void *, const void *)) streq, NULL, | |
208 | objfile->md, xmcalloc, xmfree); | |
c5aa993b | 209 | obstack_chunkfun (&objfile->psymbol_cache.cache, xmmalloc); |
aac7f4ea | 210 | obstack_freefun (&objfile->psymbol_cache.cache, xmfree); |
99d9066e JB |
211 | obstack_chunkfun (&objfile->macro_cache.cache, xmmalloc); |
212 | obstack_freefun (&objfile->macro_cache.cache, xmfree); | |
c5aa993b | 213 | obstack_chunkfun (&objfile->psymbol_obstack, xmmalloc); |
aac7f4ea | 214 | obstack_freefun (&objfile->psymbol_obstack, xmfree); |
c5aa993b | 215 | obstack_chunkfun (&objfile->symbol_obstack, xmmalloc); |
aac7f4ea | 216 | obstack_freefun (&objfile->symbol_obstack, xmfree); |
c5aa993b | 217 | obstack_chunkfun (&objfile->type_obstack, xmmalloc); |
aac7f4ea | 218 | obstack_freefun (&objfile->type_obstack, xmfree); |
c5aa993b JM |
219 | /* If already in objfile list, unlink it. */ |
220 | unlink_objfile (objfile); | |
221 | /* Forget things specific to a particular gdb, may have changed. */ | |
222 | objfile->sf = NULL; | |
223 | } | |
224 | else | |
225 | { | |
c906108c | 226 | |
c5aa993b JM |
227 | /* Set up to detect internal memory corruption. MUST be |
228 | done before the first malloc. See comments in | |
229 | init_malloc() and mmcheck(). */ | |
230 | ||
231 | init_malloc (md); | |
232 | ||
233 | objfile = (struct objfile *) | |
234 | xmmalloc (md, sizeof (struct objfile)); | |
235 | memset (objfile, 0, sizeof (struct objfile)); | |
236 | objfile->md = md; | |
237 | objfile->mmfd = fd; | |
238 | objfile->flags |= OBJF_MAPPED; | |
239 | mmalloc_setkey (objfile->md, 0, objfile); | |
240 | obstack_specify_allocation_with_arg (&objfile->psymbol_cache.cache, | |
aac7f4ea | 241 | 0, 0, xmmalloc, xmfree, |
c5aa993b | 242 | objfile->md); |
99d9066e JB |
243 | obstack_specify_allocation_with_arg (&objfile->macro_cache.cache, |
244 | 0, 0, xmmalloc, xmfree, | |
245 | objfile->md); | |
c5aa993b | 246 | obstack_specify_allocation_with_arg (&objfile->psymbol_obstack, |
aac7f4ea | 247 | 0, 0, xmmalloc, xmfree, |
c5aa993b JM |
248 | objfile->md); |
249 | obstack_specify_allocation_with_arg (&objfile->symbol_obstack, | |
aac7f4ea | 250 | 0, 0, xmmalloc, xmfree, |
c5aa993b JM |
251 | objfile->md); |
252 | obstack_specify_allocation_with_arg (&objfile->type_obstack, | |
aac7f4ea | 253 | 0, 0, xmmalloc, xmfree, |
c5aa993b JM |
254 | objfile->md); |
255 | } | |
256 | } | |
c906108c | 257 | |
2df3850c | 258 | if ((flags & OBJF_MAPPED) && (objfile == NULL)) |
c5aa993b JM |
259 | { |
260 | warning ("symbol table for '%s' will not be mapped", | |
261 | bfd_get_filename (abfd)); | |
2df3850c | 262 | flags &= ~OBJF_MAPPED; |
c5aa993b JM |
263 | } |
264 | } | |
265 | #else /* !defined(USE_MMALLOC) || !defined(HAVE_MMAP) */ | |
c906108c | 266 | |
2df3850c | 267 | if (flags & OBJF_MAPPED) |
c906108c SS |
268 | { |
269 | warning ("mapped symbol tables are not supported on this machine; missing or broken mmap()."); | |
270 | ||
271 | /* Turn off the global flag so we don't try to do mapped symbol tables | |
c5aa993b JM |
272 | any more, which shuts up gdb unless the user specifically gives the |
273 | "mapped" keyword again. */ | |
c906108c SS |
274 | |
275 | mapped_symbol_files = 0; | |
2df3850c | 276 | flags &= ~OBJF_MAPPED; |
c906108c SS |
277 | } |
278 | ||
c5aa993b | 279 | #endif /* defined(USE_MMALLOC) && defined(HAVE_MMAP) */ |
c906108c SS |
280 | |
281 | /* If we don't support mapped symbol files, didn't ask for the file to be | |
282 | mapped, or failed to open the mapped file for some reason, then revert | |
283 | back to an unmapped objfile. */ | |
284 | ||
285 | if (objfile == NULL) | |
286 | { | |
287 | objfile = (struct objfile *) xmalloc (sizeof (struct objfile)); | |
288 | memset (objfile, 0, sizeof (struct objfile)); | |
c5aa993b | 289 | objfile->md = NULL; |
af5f3db6 AC |
290 | objfile->psymbol_cache = bcache_xmalloc (); |
291 | objfile->macro_cache = bcache_xmalloc (); | |
c5aa993b | 292 | obstack_specify_allocation (&objfile->psymbol_obstack, 0, 0, xmalloc, |
b8c9b27d | 293 | xfree); |
c5aa993b | 294 | obstack_specify_allocation (&objfile->symbol_obstack, 0, 0, xmalloc, |
b8c9b27d | 295 | xfree); |
c5aa993b | 296 | obstack_specify_allocation (&objfile->type_obstack, 0, 0, xmalloc, |
b8c9b27d | 297 | xfree); |
2df3850c | 298 | flags &= ~OBJF_MAPPED; |
15831452 JB |
299 | |
300 | terminate_minimal_symbol_table (objfile); | |
c906108c SS |
301 | } |
302 | ||
303 | /* Update the per-objfile information that comes from the bfd, ensuring | |
304 | that any data that is reference is saved in the per-objfile data | |
305 | region. */ | |
306 | ||
c5aa993b JM |
307 | objfile->obfd = abfd; |
308 | if (objfile->name != NULL) | |
c906108c | 309 | { |
aac7f4ea | 310 | xmfree (objfile->md, objfile->name); |
c906108c SS |
311 | } |
312 | if (abfd != NULL) | |
313 | { | |
c5aa993b JM |
314 | objfile->name = mstrsave (objfile->md, bfd_get_filename (abfd)); |
315 | objfile->mtime = bfd_get_mtime (abfd); | |
c906108c SS |
316 | |
317 | /* Build section table. */ | |
318 | ||
319 | if (build_objfile_section_table (objfile)) | |
320 | { | |
c5aa993b JM |
321 | error ("Can't find the file sections in `%s': %s", |
322 | objfile->name, bfd_errmsg (bfd_get_error ())); | |
c906108c SS |
323 | } |
324 | } | |
eb9a305d DC |
325 | else |
326 | { | |
327 | objfile->name = "<<anonymous objfile>>"; | |
328 | } | |
c906108c | 329 | |
b8fbeb18 EZ |
330 | /* Initialize the section indexes for this objfile, so that we can |
331 | later detect if they are used w/o being properly assigned to. */ | |
332 | ||
333 | objfile->sect_index_text = -1; | |
334 | objfile->sect_index_data = -1; | |
335 | objfile->sect_index_bss = -1; | |
336 | objfile->sect_index_rodata = -1; | |
337 | ||
c906108c SS |
338 | /* Add this file onto the tail of the linked list of other such files. */ |
339 | ||
c5aa993b | 340 | objfile->next = NULL; |
c906108c SS |
341 | if (object_files == NULL) |
342 | object_files = objfile; | |
343 | else | |
344 | { | |
345 | for (last_one = object_files; | |
c5aa993b JM |
346 | last_one->next; |
347 | last_one = last_one->next); | |
348 | last_one->next = objfile; | |
c906108c SS |
349 | } |
350 | ||
2df3850c JM |
351 | /* Save passed in flag bits. */ |
352 | objfile->flags |= flags; | |
c906108c SS |
353 | |
354 | return (objfile); | |
355 | } | |
356 | ||
15831452 JB |
357 | |
358 | /* Create the terminating entry of OBJFILE's minimal symbol table. | |
359 | If OBJFILE->msymbols is zero, allocate a single entry from | |
360 | OBJFILE->symbol_obstack; otherwise, just initialize | |
361 | OBJFILE->msymbols[OBJFILE->minimal_symbol_count]. */ | |
362 | void | |
363 | terminate_minimal_symbol_table (struct objfile *objfile) | |
364 | { | |
365 | if (! objfile->msymbols) | |
366 | objfile->msymbols = ((struct minimal_symbol *) | |
367 | obstack_alloc (&objfile->symbol_obstack, | |
368 | sizeof (objfile->msymbols[0]))); | |
369 | ||
370 | { | |
371 | struct minimal_symbol *m | |
372 | = &objfile->msymbols[objfile->minimal_symbol_count]; | |
373 | ||
374 | memset (m, 0, sizeof (*m)); | |
375 | SYMBOL_NAME (m) = NULL; | |
376 | SYMBOL_VALUE_ADDRESS (m) = 0; | |
377 | MSYMBOL_INFO (m) = NULL; | |
378 | MSYMBOL_TYPE (m) = mst_unknown; | |
379 | SYMBOL_INIT_LANGUAGE_SPECIFIC (m, language_unknown); | |
380 | } | |
381 | } | |
382 | ||
383 | ||
5b5d99cf JB |
384 | /* Put one object file before a specified on in the global list. |
385 | This can be used to make sure an object file is destroyed before | |
386 | another when using ALL_OBJFILES_SAFE to free all objfiles. */ | |
387 | void | |
388 | put_objfile_before (struct objfile *objfile, struct objfile *before_this) | |
389 | { | |
390 | struct objfile **objp; | |
391 | ||
392 | unlink_objfile (objfile); | |
393 | ||
394 | for (objp = &object_files; *objp != NULL; objp = &((*objp)->next)) | |
395 | { | |
396 | if (*objp == before_this) | |
397 | { | |
398 | objfile->next = *objp; | |
399 | *objp = objfile; | |
400 | return; | |
401 | } | |
402 | } | |
403 | ||
404 | internal_error (__FILE__, __LINE__, | |
405 | "put_objfile_before: before objfile not in list"); | |
406 | } | |
407 | ||
c906108c SS |
408 | /* Put OBJFILE at the front of the list. */ |
409 | ||
410 | void | |
fba45db2 | 411 | objfile_to_front (struct objfile *objfile) |
c906108c SS |
412 | { |
413 | struct objfile **objp; | |
414 | for (objp = &object_files; *objp != NULL; objp = &((*objp)->next)) | |
415 | { | |
416 | if (*objp == objfile) | |
417 | { | |
418 | /* Unhook it from where it is. */ | |
419 | *objp = objfile->next; | |
420 | /* Put it in the front. */ | |
421 | objfile->next = object_files; | |
422 | object_files = objfile; | |
423 | break; | |
424 | } | |
425 | } | |
426 | } | |
427 | ||
428 | /* Unlink OBJFILE from the list of known objfiles, if it is found in the | |
429 | list. | |
430 | ||
431 | It is not a bug, or error, to call this function if OBJFILE is not known | |
432 | to be in the current list. This is done in the case of mapped objfiles, | |
433 | for example, just to ensure that the mapped objfile doesn't appear twice | |
434 | in the list. Since the list is threaded, linking in a mapped objfile | |
435 | twice would create a circular list. | |
436 | ||
437 | If OBJFILE turns out to be in the list, we zap it's NEXT pointer after | |
438 | unlinking it, just to ensure that we have completely severed any linkages | |
439 | between the OBJFILE and the list. */ | |
440 | ||
441 | void | |
fba45db2 | 442 | unlink_objfile (struct objfile *objfile) |
c906108c | 443 | { |
c5aa993b | 444 | struct objfile **objpp; |
c906108c | 445 | |
c5aa993b | 446 | for (objpp = &object_files; *objpp != NULL; objpp = &((*objpp)->next)) |
c906108c | 447 | { |
c5aa993b | 448 | if (*objpp == objfile) |
c906108c | 449 | { |
c5aa993b JM |
450 | *objpp = (*objpp)->next; |
451 | objfile->next = NULL; | |
07cd4b97 | 452 | return; |
c906108c SS |
453 | } |
454 | } | |
07cd4b97 | 455 | |
8e65ff28 AC |
456 | internal_error (__FILE__, __LINE__, |
457 | "unlink_objfile: objfile already unlinked"); | |
c906108c SS |
458 | } |
459 | ||
460 | ||
461 | /* Destroy an objfile and all the symtabs and psymtabs under it. Note | |
462 | that as much as possible is allocated on the symbol_obstack and | |
463 | psymbol_obstack, so that the memory can be efficiently freed. | |
464 | ||
465 | Things which we do NOT free because they are not in malloc'd memory | |
466 | or not in memory specific to the objfile include: | |
467 | ||
c5aa993b | 468 | objfile -> sf |
c906108c SS |
469 | |
470 | FIXME: If the objfile is using reusable symbol information (via mmalloc), | |
471 | then we need to take into account the fact that more than one process | |
472 | may be using the symbol information at the same time (when mmalloc is | |
473 | extended to support cooperative locking). When more than one process | |
474 | is using the mapped symbol info, we need to be more careful about when | |
475 | we free objects in the reusable area. */ | |
476 | ||
477 | void | |
fba45db2 | 478 | free_objfile (struct objfile *objfile) |
c906108c | 479 | { |
5b5d99cf JB |
480 | if (objfile->separate_debug_objfile) |
481 | { | |
482 | free_objfile (objfile->separate_debug_objfile); | |
483 | } | |
484 | ||
485 | if (objfile->separate_debug_objfile_backlink) | |
486 | { | |
487 | /* We freed the separate debug file, make sure the base objfile | |
488 | doesn't reference it. */ | |
489 | objfile->separate_debug_objfile_backlink->separate_debug_objfile = NULL; | |
490 | } | |
491 | ||
c906108c SS |
492 | /* First do any symbol file specific actions required when we are |
493 | finished with a particular symbol file. Note that if the objfile | |
494 | is using reusable symbol information (via mmalloc) then each of | |
495 | these routines is responsible for doing the correct thing, either | |
496 | freeing things which are valid only during this particular gdb | |
497 | execution, or leaving them to be reused during the next one. */ | |
498 | ||
c5aa993b | 499 | if (objfile->sf != NULL) |
c906108c | 500 | { |
c5aa993b | 501 | (*objfile->sf->sym_finish) (objfile); |
c906108c SS |
502 | } |
503 | ||
504 | /* We always close the bfd. */ | |
505 | ||
c5aa993b | 506 | if (objfile->obfd != NULL) |
c906108c SS |
507 | { |
508 | char *name = bfd_get_filename (objfile->obfd); | |
c5aa993b | 509 | if (!bfd_close (objfile->obfd)) |
c906108c SS |
510 | warning ("cannot close \"%s\": %s", |
511 | name, bfd_errmsg (bfd_get_error ())); | |
b8c9b27d | 512 | xfree (name); |
c906108c SS |
513 | } |
514 | ||
515 | /* Remove it from the chain of all objfiles. */ | |
516 | ||
517 | unlink_objfile (objfile); | |
518 | ||
519 | /* If we are going to free the runtime common objfile, mark it | |
520 | as unallocated. */ | |
521 | ||
522 | if (objfile == rt_common_objfile) | |
523 | rt_common_objfile = NULL; | |
524 | ||
525 | /* Before the symbol table code was redone to make it easier to | |
526 | selectively load and remove information particular to a specific | |
527 | linkage unit, gdb used to do these things whenever the monolithic | |
528 | symbol table was blown away. How much still needs to be done | |
529 | is unknown, but we play it safe for now and keep each action until | |
530 | it is shown to be no longer needed. */ | |
c5aa993b | 531 | |
c906108c SS |
532 | /* I *think* all our callers call clear_symtab_users. If so, no need |
533 | to call this here. */ | |
534 | clear_pc_function_cache (); | |
535 | ||
536 | /* The last thing we do is free the objfile struct itself for the | |
aac7f4ea AC |
537 | non-reusable case, or detach from the mapped file for the |
538 | reusable case. Note that the mmalloc_detach or the xmfree() is | |
539 | the last thing we can do with this objfile. */ | |
c906108c SS |
540 | |
541 | #if defined(USE_MMALLOC) && defined(HAVE_MMAP) | |
542 | ||
c5aa993b | 543 | if (objfile->flags & OBJF_MAPPED) |
c906108c SS |
544 | { |
545 | /* Remember the fd so we can close it. We can't close it before | |
c5aa993b | 546 | doing the detach, and after the detach the objfile is gone. */ |
c906108c SS |
547 | int mmfd; |
548 | ||
c5aa993b JM |
549 | mmfd = objfile->mmfd; |
550 | mmalloc_detach (objfile->md); | |
c906108c SS |
551 | objfile = NULL; |
552 | close (mmfd); | |
553 | } | |
554 | ||
c5aa993b | 555 | #endif /* defined(USE_MMALLOC) && defined(HAVE_MMAP) */ |
c906108c SS |
556 | |
557 | /* If we still have an objfile, then either we don't support reusable | |
558 | objfiles or this one was not reusable. So free it normally. */ | |
559 | ||
560 | if (objfile != NULL) | |
561 | { | |
c5aa993b | 562 | if (objfile->name != NULL) |
c906108c | 563 | { |
aac7f4ea | 564 | xmfree (objfile->md, objfile->name); |
c906108c SS |
565 | } |
566 | if (objfile->global_psymbols.list) | |
aac7f4ea | 567 | xmfree (objfile->md, objfile->global_psymbols.list); |
c906108c | 568 | if (objfile->static_psymbols.list) |
aac7f4ea | 569 | xmfree (objfile->md, objfile->static_psymbols.list); |
c906108c | 570 | /* Free the obstacks for non-reusable objfiles */ |
af5f3db6 AC |
571 | bcache_xfree (objfile->psymbol_cache); |
572 | bcache_xfree (objfile->macro_cache); | |
2de7ced7 DJ |
573 | if (objfile->demangled_names_hash) |
574 | htab_delete (objfile->demangled_names_hash); | |
c5aa993b JM |
575 | obstack_free (&objfile->psymbol_obstack, 0); |
576 | obstack_free (&objfile->symbol_obstack, 0); | |
577 | obstack_free (&objfile->type_obstack, 0); | |
aac7f4ea | 578 | xmfree (objfile->md, objfile); |
c906108c SS |
579 | objfile = NULL; |
580 | } | |
581 | } | |
582 | ||
74b7792f AC |
583 | static void |
584 | do_free_objfile_cleanup (void *obj) | |
585 | { | |
586 | free_objfile (obj); | |
587 | } | |
588 | ||
589 | struct cleanup * | |
590 | make_cleanup_free_objfile (struct objfile *obj) | |
591 | { | |
592 | return make_cleanup (do_free_objfile_cleanup, obj); | |
593 | } | |
c906108c SS |
594 | |
595 | /* Free all the object files at once and clean up their users. */ | |
596 | ||
597 | void | |
fba45db2 | 598 | free_all_objfiles (void) |
c906108c SS |
599 | { |
600 | struct objfile *objfile, *temp; | |
601 | ||
602 | ALL_OBJFILES_SAFE (objfile, temp) | |
c5aa993b JM |
603 | { |
604 | free_objfile (objfile); | |
605 | } | |
c906108c SS |
606 | clear_symtab_users (); |
607 | } | |
608 | \f | |
609 | /* Relocate OBJFILE to NEW_OFFSETS. There should be OBJFILE->NUM_SECTIONS | |
610 | entries in new_offsets. */ | |
611 | void | |
fba45db2 | 612 | objfile_relocate (struct objfile *objfile, struct section_offsets *new_offsets) |
c906108c | 613 | { |
d4f3574e SS |
614 | struct section_offsets *delta = |
615 | (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); | |
c906108c SS |
616 | |
617 | { | |
618 | int i; | |
619 | int something_changed = 0; | |
620 | for (i = 0; i < objfile->num_sections; ++i) | |
621 | { | |
a4c8257b | 622 | delta->offsets[i] = |
c906108c SS |
623 | ANOFFSET (new_offsets, i) - ANOFFSET (objfile->section_offsets, i); |
624 | if (ANOFFSET (delta, i) != 0) | |
625 | something_changed = 1; | |
626 | } | |
627 | if (!something_changed) | |
628 | return; | |
629 | } | |
630 | ||
631 | /* OK, get all the symtabs. */ | |
632 | { | |
633 | struct symtab *s; | |
634 | ||
635 | ALL_OBJFILE_SYMTABS (objfile, s) | |
c5aa993b JM |
636 | { |
637 | struct linetable *l; | |
638 | struct blockvector *bv; | |
639 | int i; | |
640 | ||
641 | /* First the line table. */ | |
642 | l = LINETABLE (s); | |
643 | if (l) | |
644 | { | |
645 | for (i = 0; i < l->nitems; ++i) | |
646 | l->item[i].pc += ANOFFSET (delta, s->block_line_section); | |
647 | } | |
c906108c | 648 | |
c5aa993b JM |
649 | /* Don't relocate a shared blockvector more than once. */ |
650 | if (!s->primary) | |
651 | continue; | |
c906108c | 652 | |
c5aa993b JM |
653 | bv = BLOCKVECTOR (s); |
654 | for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); ++i) | |
655 | { | |
656 | struct block *b; | |
e88c90f2 | 657 | struct symbol *sym; |
c5aa993b JM |
658 | int j; |
659 | ||
660 | b = BLOCKVECTOR_BLOCK (bv, i); | |
661 | BLOCK_START (b) += ANOFFSET (delta, s->block_line_section); | |
662 | BLOCK_END (b) += ANOFFSET (delta, s->block_line_section); | |
663 | ||
e88c90f2 | 664 | ALL_BLOCK_SYMBOLS (b, j, sym) |
c5aa993b | 665 | { |
7a78d0ee KB |
666 | fixup_symbol_section (sym, objfile); |
667 | ||
c5aa993b JM |
668 | /* The RS6000 code from which this was taken skipped |
669 | any symbols in STRUCT_NAMESPACE or UNDEF_NAMESPACE. | |
670 | But I'm leaving out that test, on the theory that | |
671 | they can't possibly pass the tests below. */ | |
672 | if ((SYMBOL_CLASS (sym) == LOC_LABEL | |
673 | || SYMBOL_CLASS (sym) == LOC_STATIC | |
674 | || SYMBOL_CLASS (sym) == LOC_INDIRECT) | |
675 | && SYMBOL_SECTION (sym) >= 0) | |
676 | { | |
677 | SYMBOL_VALUE_ADDRESS (sym) += | |
678 | ANOFFSET (delta, SYMBOL_SECTION (sym)); | |
679 | } | |
c906108c | 680 | #ifdef MIPS_EFI_SYMBOL_NAME |
c5aa993b | 681 | /* Relocate Extra Function Info for ecoff. */ |
c906108c | 682 | |
c5aa993b JM |
683 | else if (SYMBOL_CLASS (sym) == LOC_CONST |
684 | && SYMBOL_NAMESPACE (sym) == LABEL_NAMESPACE | |
494b7ec9 | 685 | && strcmp (SYMBOL_NAME (sym), MIPS_EFI_SYMBOL_NAME) == 0) |
c5aa993b | 686 | ecoff_relocate_efi (sym, ANOFFSET (delta, |
c906108c SS |
687 | s->block_line_section)); |
688 | #endif | |
c5aa993b JM |
689 | } |
690 | } | |
691 | } | |
c906108c SS |
692 | } |
693 | ||
694 | { | |
695 | struct partial_symtab *p; | |
696 | ||
697 | ALL_OBJFILE_PSYMTABS (objfile, p) | |
c5aa993b | 698 | { |
b8fbeb18 EZ |
699 | p->textlow += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); |
700 | p->texthigh += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); | |
c5aa993b | 701 | } |
c906108c SS |
702 | } |
703 | ||
704 | { | |
705 | struct partial_symbol **psym; | |
706 | ||
707 | for (psym = objfile->global_psymbols.list; | |
708 | psym < objfile->global_psymbols.next; | |
709 | psym++) | |
7a78d0ee KB |
710 | { |
711 | fixup_psymbol_section (*psym, objfile); | |
712 | if (SYMBOL_SECTION (*psym) >= 0) | |
713 | SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta, | |
714 | SYMBOL_SECTION (*psym)); | |
715 | } | |
c906108c SS |
716 | for (psym = objfile->static_psymbols.list; |
717 | psym < objfile->static_psymbols.next; | |
718 | psym++) | |
7a78d0ee KB |
719 | { |
720 | fixup_psymbol_section (*psym, objfile); | |
721 | if (SYMBOL_SECTION (*psym) >= 0) | |
722 | SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta, | |
723 | SYMBOL_SECTION (*psym)); | |
724 | } | |
c906108c SS |
725 | } |
726 | ||
727 | { | |
728 | struct minimal_symbol *msym; | |
729 | ALL_OBJFILE_MSYMBOLS (objfile, msym) | |
730 | if (SYMBOL_SECTION (msym) >= 0) | |
c5aa993b | 731 | SYMBOL_VALUE_ADDRESS (msym) += ANOFFSET (delta, SYMBOL_SECTION (msym)); |
c906108c SS |
732 | } |
733 | /* Relocating different sections by different amounts may cause the symbols | |
734 | to be out of order. */ | |
735 | msymbols_sort (objfile); | |
736 | ||
737 | { | |
738 | int i; | |
739 | for (i = 0; i < objfile->num_sections; ++i) | |
a4c8257b | 740 | (objfile->section_offsets)->offsets[i] = ANOFFSET (new_offsets, i); |
c906108c SS |
741 | } |
742 | ||
36b0c0e0 PS |
743 | if (objfile->ei.entry_point != ~(CORE_ADDR) 0) |
744 | { | |
745 | /* Relocate ei.entry_point with its section offset, use SECT_OFF_TEXT | |
746 | only as a fallback. */ | |
747 | struct obj_section *s; | |
748 | s = find_pc_section (objfile->ei.entry_point); | |
749 | if (s) | |
750 | objfile->ei.entry_point += ANOFFSET (delta, s->the_bfd_section->index); | |
751 | else | |
752 | objfile->ei.entry_point += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); | |
753 | } | |
754 | ||
c906108c SS |
755 | { |
756 | struct obj_section *s; | |
757 | bfd *abfd; | |
758 | ||
759 | abfd = objfile->obfd; | |
760 | ||
96baa820 | 761 | ALL_OBJFILE_OSECTIONS (objfile, s) |
c906108c | 762 | { |
78f0949b KB |
763 | int idx = s->the_bfd_section->index; |
764 | ||
765 | s->addr += ANOFFSET (delta, idx); | |
766 | s->endaddr += ANOFFSET (delta, idx); | |
c906108c SS |
767 | } |
768 | } | |
769 | ||
c906108c SS |
770 | if (objfile->ei.entry_func_lowpc != INVALID_ENTRY_LOWPC) |
771 | { | |
b8fbeb18 EZ |
772 | objfile->ei.entry_func_lowpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); |
773 | objfile->ei.entry_func_highpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
774 | } |
775 | ||
776 | if (objfile->ei.entry_file_lowpc != INVALID_ENTRY_LOWPC) | |
777 | { | |
b8fbeb18 EZ |
778 | objfile->ei.entry_file_lowpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); |
779 | objfile->ei.entry_file_highpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
780 | } |
781 | ||
782 | if (objfile->ei.main_func_lowpc != INVALID_ENTRY_LOWPC) | |
783 | { | |
b8fbeb18 EZ |
784 | objfile->ei.main_func_lowpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); |
785 | objfile->ei.main_func_highpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
786 | } |
787 | ||
788 | /* Relocate breakpoints as necessary, after things are relocated. */ | |
789 | breakpoint_re_set (); | |
790 | } | |
791 | \f | |
792 | /* Many places in gdb want to test just to see if we have any partial | |
793 | symbols available. This function returns zero if none are currently | |
794 | available, nonzero otherwise. */ | |
795 | ||
796 | int | |
fba45db2 | 797 | have_partial_symbols (void) |
c906108c SS |
798 | { |
799 | struct objfile *ofp; | |
800 | ||
801 | ALL_OBJFILES (ofp) | |
c5aa993b JM |
802 | { |
803 | if (ofp->psymtabs != NULL) | |
804 | { | |
805 | return 1; | |
806 | } | |
807 | } | |
c906108c SS |
808 | return 0; |
809 | } | |
810 | ||
811 | /* Many places in gdb want to test just to see if we have any full | |
812 | symbols available. This function returns zero if none are currently | |
813 | available, nonzero otherwise. */ | |
814 | ||
815 | int | |
fba45db2 | 816 | have_full_symbols (void) |
c906108c SS |
817 | { |
818 | struct objfile *ofp; | |
819 | ||
820 | ALL_OBJFILES (ofp) | |
c5aa993b JM |
821 | { |
822 | if (ofp->symtabs != NULL) | |
823 | { | |
824 | return 1; | |
825 | } | |
826 | } | |
c906108c SS |
827 | return 0; |
828 | } | |
829 | ||
830 | ||
831 | /* This operations deletes all objfile entries that represent solibs that | |
832 | weren't explicitly loaded by the user, via e.g., the add-symbol-file | |
833 | command. | |
c5aa993b | 834 | */ |
c906108c | 835 | void |
fba45db2 | 836 | objfile_purge_solibs (void) |
c906108c | 837 | { |
c5aa993b JM |
838 | struct objfile *objf; |
839 | struct objfile *temp; | |
c906108c SS |
840 | |
841 | ALL_OBJFILES_SAFE (objf, temp) | |
842 | { | |
843 | /* We assume that the solib package has been purged already, or will | |
844 | be soon. | |
c5aa993b | 845 | */ |
2df3850c | 846 | if (!(objf->flags & OBJF_USERLOADED) && (objf->flags & OBJF_SHARED)) |
c906108c SS |
847 | free_objfile (objf); |
848 | } | |
849 | } | |
850 | ||
851 | ||
852 | /* Many places in gdb want to test just to see if we have any minimal | |
853 | symbols available. This function returns zero if none are currently | |
854 | available, nonzero otherwise. */ | |
855 | ||
856 | int | |
fba45db2 | 857 | have_minimal_symbols (void) |
c906108c SS |
858 | { |
859 | struct objfile *ofp; | |
860 | ||
861 | ALL_OBJFILES (ofp) | |
c5aa993b | 862 | { |
15831452 | 863 | if (ofp->minimal_symbol_count > 0) |
c5aa993b JM |
864 | { |
865 | return 1; | |
866 | } | |
867 | } | |
c906108c SS |
868 | return 0; |
869 | } | |
870 | ||
871 | #if defined(USE_MMALLOC) && defined(HAVE_MMAP) | |
872 | ||
873 | /* Given the name of a mapped symbol file in SYMSFILENAME, and the timestamp | |
874 | of the corresponding symbol file in MTIME, try to open an existing file | |
875 | with the name SYMSFILENAME and verify it is more recent than the base | |
876 | file by checking it's timestamp against MTIME. | |
877 | ||
878 | If SYMSFILENAME does not exist (or can't be stat'd), simply returns -1. | |
879 | ||
880 | If SYMSFILENAME does exist, but is out of date, we check to see if the | |
881 | user has specified creation of a mapped file. If so, we don't issue | |
882 | any warning message because we will be creating a new mapped file anyway, | |
883 | overwriting the old one. If not, then we issue a warning message so that | |
884 | the user will know why we aren't using this existing mapped symbol file. | |
885 | In either case, we return -1. | |
886 | ||
887 | If SYMSFILENAME does exist and is not out of date, but can't be opened for | |
888 | some reason, then prints an appropriate system error message and returns -1. | |
889 | ||
890 | Otherwise, returns the open file descriptor. */ | |
891 | ||
892 | static int | |
fba45db2 | 893 | open_existing_mapped_file (char *symsfilename, long mtime, int flags) |
c906108c SS |
894 | { |
895 | int fd = -1; | |
896 | struct stat sbuf; | |
897 | ||
898 | if (stat (symsfilename, &sbuf) == 0) | |
899 | { | |
900 | if (sbuf.st_mtime < mtime) | |
901 | { | |
2df3850c | 902 | if (!(flags & OBJF_MAPPED)) |
c906108c SS |
903 | { |
904 | warning ("mapped symbol file `%s' is out of date, ignored it", | |
905 | symsfilename); | |
906 | } | |
907 | } | |
908 | else if ((fd = open (symsfilename, O_RDWR)) < 0) | |
909 | { | |
910 | if (error_pre_print) | |
911 | { | |
912 | printf_unfiltered (error_pre_print); | |
913 | } | |
914 | print_sys_errmsg (symsfilename, errno); | |
915 | } | |
916 | } | |
917 | return (fd); | |
918 | } | |
919 | ||
920 | /* Look for a mapped symbol file that corresponds to FILENAME and is more | |
921 | recent than MTIME. If MAPPED is nonzero, the user has asked that gdb | |
922 | use a mapped symbol file for this file, so create a new one if one does | |
923 | not currently exist. | |
924 | ||
925 | If found, then return an open file descriptor for the file, otherwise | |
926 | return -1. | |
927 | ||
928 | This routine is responsible for implementing the policy that generates | |
929 | the name of the mapped symbol file from the name of a file containing | |
930 | symbols that gdb would like to read. Currently this policy is to append | |
931 | ".syms" to the name of the file. | |
932 | ||
933 | This routine is also responsible for implementing the policy that | |
934 | determines where the mapped symbol file is found (the search path). | |
935 | This policy is that when reading an existing mapped file, a file of | |
936 | the correct name in the current directory takes precedence over a | |
937 | file of the correct name in the same directory as the symbol file. | |
938 | When creating a new mapped file, it is always created in the current | |
939 | directory. This helps to minimize the chances of a user unknowingly | |
940 | creating big mapped files in places like /bin and /usr/local/bin, and | |
941 | allows a local copy to override a manually installed global copy (in | |
942 | /bin for example). */ | |
943 | ||
944 | static int | |
fba45db2 | 945 | open_mapped_file (char *filename, long mtime, int flags) |
c906108c SS |
946 | { |
947 | int fd; | |
948 | char *symsfilename; | |
949 | ||
950 | /* First try to open an existing file in the current directory, and | |
951 | then try the directory where the symbol file is located. */ | |
952 | ||
bdda63b0 | 953 | symsfilename = concat ("./", lbasename (filename), ".syms", (char *) NULL); |
2df3850c | 954 | if ((fd = open_existing_mapped_file (symsfilename, mtime, flags)) < 0) |
c906108c | 955 | { |
b8c9b27d | 956 | xfree (symsfilename); |
c906108c | 957 | symsfilename = concat (filename, ".syms", (char *) NULL); |
2fc18c15 | 958 | fd = open_existing_mapped_file (symsfilename, mtime, flags); |
c906108c SS |
959 | } |
960 | ||
961 | /* If we don't have an open file by now, then either the file does not | |
962 | already exist, or the base file has changed since it was created. In | |
963 | either case, if the user has specified use of a mapped file, then | |
964 | create a new mapped file, truncating any existing one. If we can't | |
965 | create one, print a system error message saying why we can't. | |
966 | ||
967 | By default the file is rw for everyone, with the user's umask taking | |
968 | care of turning off the permissions the user wants off. */ | |
969 | ||
2fc18c15 | 970 | if ((fd < 0) && (flags & OBJF_MAPPED)) |
c906108c | 971 | { |
b8c9b27d | 972 | xfree (symsfilename); |
bdda63b0 | 973 | symsfilename = concat ("./", lbasename (filename), ".syms", |
c906108c SS |
974 | (char *) NULL); |
975 | if ((fd = open (symsfilename, O_RDWR | O_CREAT | O_TRUNC, 0666)) < 0) | |
976 | { | |
977 | if (error_pre_print) | |
978 | { | |
979 | printf_unfiltered (error_pre_print); | |
980 | } | |
981 | print_sys_errmsg (symsfilename, errno); | |
982 | } | |
983 | } | |
984 | ||
b8c9b27d | 985 | xfree (symsfilename); |
c906108c SS |
986 | return (fd); |
987 | } | |
988 | ||
4efb68b1 | 989 | static void * |
fba45db2 | 990 | map_to_file (int fd) |
c906108c | 991 | { |
4efb68b1 | 992 | void *md; |
c906108c SS |
993 | CORE_ADDR mapto; |
994 | ||
4efb68b1 | 995 | md = mmalloc_attach (fd, 0); |
c906108c SS |
996 | if (md != NULL) |
997 | { | |
998 | mapto = (CORE_ADDR) mmalloc_getkey (md, 1); | |
999 | md = mmalloc_detach (md); | |
1000 | if (md != NULL) | |
1001 | { | |
1002 | /* FIXME: should figure out why detach failed */ | |
1003 | md = NULL; | |
1004 | } | |
1005 | else if (mapto != (CORE_ADDR) NULL) | |
1006 | { | |
1007 | /* This mapping file needs to be remapped at "mapto" */ | |
4efb68b1 | 1008 | md = mmalloc_attach (fd, mapto); |
c906108c SS |
1009 | } |
1010 | else | |
1011 | { | |
1012 | /* This is a freshly created mapping file. */ | |
1013 | mapto = (CORE_ADDR) mmalloc_findbase (20 * 1024 * 1024); | |
1014 | if (mapto != 0) | |
1015 | { | |
1016 | /* To avoid reusing the freshly created mapping file, at the | |
c5aa993b JM |
1017 | address selected by mmap, we must truncate it before trying |
1018 | to do an attach at the address we want. */ | |
c906108c | 1019 | ftruncate (fd, 0); |
4efb68b1 | 1020 | md = mmalloc_attach (fd, mapto); |
c906108c SS |
1021 | if (md != NULL) |
1022 | { | |
4efb68b1 | 1023 | mmalloc_setkey (md, 1, mapto); |
c906108c SS |
1024 | } |
1025 | } | |
1026 | } | |
1027 | } | |
1028 | return (md); | |
1029 | } | |
1030 | ||
c5aa993b | 1031 | #endif /* defined(USE_MMALLOC) && defined(HAVE_MMAP) */ |
c906108c SS |
1032 | |
1033 | /* Returns a section whose range includes PC and SECTION, | |
1034 | or NULL if none found. Note the distinction between the return type, | |
1035 | struct obj_section (which is defined in gdb), and the input type | |
1036 | struct sec (which is a bfd-defined data type). The obj_section | |
1037 | contains a pointer to the bfd struct sec section. */ | |
1038 | ||
1039 | struct obj_section * | |
fba45db2 | 1040 | find_pc_sect_section (CORE_ADDR pc, struct sec *section) |
c906108c SS |
1041 | { |
1042 | struct obj_section *s; | |
1043 | struct objfile *objfile; | |
c5aa993b | 1044 | |
96baa820 | 1045 | ALL_OBJSECTIONS (objfile, s) |
c5aa993b JM |
1046 | if ((section == 0 || section == s->the_bfd_section) && |
1047 | s->addr <= pc && pc < s->endaddr) | |
c5aa993b | 1048 | return (s); |
c906108c | 1049 | |
c5aa993b | 1050 | return (NULL); |
c906108c SS |
1051 | } |
1052 | ||
1053 | /* Returns a section whose range includes PC or NULL if none found. | |
1054 | Backward compatibility, no section. */ | |
1055 | ||
1056 | struct obj_section * | |
fba45db2 | 1057 | find_pc_section (CORE_ADDR pc) |
c906108c SS |
1058 | { |
1059 | return find_pc_sect_section (pc, find_pc_mapped_section (pc)); | |
1060 | } | |
c5aa993b | 1061 | |
c906108c SS |
1062 | |
1063 | /* In SVR4, we recognize a trampoline by it's section name. | |
1064 | That is, if the pc is in a section named ".plt" then we are in | |
1065 | a trampoline. */ | |
1066 | ||
1067 | int | |
fba45db2 | 1068 | in_plt_section (CORE_ADDR pc, char *name) |
c906108c SS |
1069 | { |
1070 | struct obj_section *s; | |
1071 | int retval = 0; | |
c5aa993b JM |
1072 | |
1073 | s = find_pc_section (pc); | |
1074 | ||
c906108c SS |
1075 | retval = (s != NULL |
1076 | && s->the_bfd_section->name != NULL | |
1077 | && STREQ (s->the_bfd_section->name, ".plt")); | |
c5aa993b | 1078 | return (retval); |
c906108c | 1079 | } |
7be570e7 JM |
1080 | |
1081 | /* Return nonzero if NAME is in the import list of OBJFILE. Else | |
1082 | return zero. */ | |
1083 | ||
1084 | int | |
fba45db2 | 1085 | is_in_import_list (char *name, struct objfile *objfile) |
7be570e7 JM |
1086 | { |
1087 | register int i; | |
1088 | ||
1089 | if (!objfile || !name || !*name) | |
1090 | return 0; | |
1091 | ||
1092 | for (i = 0; i < objfile->import_list_size; i++) | |
1093 | if (objfile->import_list[i] && STREQ (name, objfile->import_list[i])) | |
1094 | return 1; | |
1095 | return 0; | |
1096 | } | |
1097 |