File: | src/gnu/usr.bin/binutils/gdb/symfile.c |
Warning: | line 3087, column 8 Access to field 'the_bfd_section' results in a dereference of a null pointer (loaded from variable 'osect') |
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1 | /* Generic symbol file reading for the GNU debugger, GDB. | |||
2 | ||||
3 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, | |||
4 | 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc. | |||
5 | ||||
6 | Contributed by Cygnus Support, using pieces from other GDB modules. | |||
7 | ||||
8 | This file is part of GDB. | |||
9 | ||||
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. | |||
14 | ||||
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. | |||
19 | ||||
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. */ | |||
24 | ||||
25 | #include "defs.h" | |||
26 | #include "bfdlink.h" | |||
27 | #include "symtab.h" | |||
28 | #include "gdbtypes.h" | |||
29 | #include "gdbcore.h" | |||
30 | #include "frame.h" | |||
31 | #include "target.h" | |||
32 | #include "value.h" | |||
33 | #include "symfile.h" | |||
34 | #include "objfiles.h" | |||
35 | #include "source.h" | |||
36 | #include "gdbcmd.h" | |||
37 | #include "breakpoint.h" | |||
38 | #include "language.h" | |||
39 | #include "complaints.h" | |||
40 | #include "demangle.h" | |||
41 | #include "inferior.h" /* for write_pc */ | |||
42 | #include "filenames.h" /* for DOSish file names */ | |||
43 | #include "gdb-stabs.h" | |||
44 | #include "gdb_obstack.h" | |||
45 | #include "completer.h" | |||
46 | #include "bcache.h" | |||
47 | #include "hashtab.h" | |||
48 | #include "readline/readline.h" | |||
49 | #include "gdb_assert.h" | |||
50 | #include "block.h" | |||
51 | #include "varobj.h" | |||
52 | ||||
53 | #include <sys/types.h> | |||
54 | #include <fcntl.h> | |||
55 | #include "gdb_string.h" | |||
56 | #include "gdb_stat.h" | |||
57 | #include <ctype.h> | |||
58 | #include <time.h> | |||
59 | ||||
60 | #ifndef O_BINARY0 | |||
61 | #define O_BINARY0 0 | |||
62 | #endif | |||
63 | ||||
64 | int (*deprecated_ui_load_progress_hook) (const char *section, unsigned long num); | |||
65 | void (*deprecated_show_load_progress) (const char *section, | |||
66 | unsigned long section_sent, | |||
67 | unsigned long section_size, | |||
68 | unsigned long total_sent, | |||
69 | unsigned long total_size); | |||
70 | void (*deprecated_pre_add_symbol_hook) (const char *); | |||
71 | void (*deprecated_post_add_symbol_hook) (void); | |||
72 | void (*deprecated_target_new_objfile_hook) (struct objfile *); | |||
73 | ||||
74 | static void clear_symtab_users_cleanup (void *ignore); | |||
75 | ||||
76 | /* Global variables owned by this file */ | |||
77 | int readnow_symbol_files; /* Read full symbols immediately */ | |||
78 | ||||
79 | /* External variables and functions referenced. */ | |||
80 | ||||
81 | extern void report_transfer_performance (unsigned long, time_t, time_t); | |||
82 | ||||
83 | /* Functions this file defines */ | |||
84 | ||||
85 | #if 0 | |||
86 | static int simple_read_overlay_region_table (void); | |||
87 | static void simple_free_overlay_region_table (void); | |||
88 | #endif | |||
89 | ||||
90 | static void set_initial_language (void); | |||
91 | ||||
92 | static void load_command (char *, int); | |||
93 | ||||
94 | static void symbol_file_add_main_1 (char *args, int from_tty, int flags); | |||
95 | ||||
96 | static void add_symbol_file_command (char *, int); | |||
97 | ||||
98 | static void add_shared_symbol_files_command (char *, int); | |||
99 | ||||
100 | static void reread_separate_symbols (struct objfile *objfile); | |||
101 | ||||
102 | static void cashier_psymtab (struct partial_symtab *); | |||
103 | ||||
104 | bfd *symfile_bfd_open (char *); | |||
105 | ||||
106 | int get_section_index (struct objfile *, char *); | |||
107 | ||||
108 | static void find_sym_fns (struct objfile *); | |||
109 | ||||
110 | static void decrement_reading_symtab (void *); | |||
111 | ||||
112 | static void overlay_invalidate_all (void); | |||
113 | ||||
114 | static int overlay_is_mapped (struct obj_section *); | |||
115 | ||||
116 | void list_overlays_command (char *, int); | |||
117 | ||||
118 | void map_overlay_command (char *, int); | |||
119 | ||||
120 | void unmap_overlay_command (char *, int); | |||
121 | ||||
122 | static void overlay_auto_command (char *, int); | |||
123 | ||||
124 | static void overlay_manual_command (char *, int); | |||
125 | ||||
126 | static void overlay_off_command (char *, int); | |||
127 | ||||
128 | static void overlay_load_command (char *, int); | |||
129 | ||||
130 | static void overlay_command (char *, int); | |||
131 | ||||
132 | static void simple_free_overlay_table (void); | |||
133 | ||||
134 | static void read_target_long_array (CORE_ADDR, unsigned int *, int); | |||
135 | ||||
136 | static int simple_read_overlay_table (void); | |||
137 | ||||
138 | static int simple_overlay_update_1 (struct obj_section *); | |||
139 | ||||
140 | static void add_filename_language (char *ext, enum language lang); | |||
141 | ||||
142 | static void set_ext_lang_command (char *args, int from_tty); | |||
143 | ||||
144 | static void info_ext_lang_command (char *args, int from_tty); | |||
145 | ||||
146 | static char *find_separate_debug_file (struct objfile *objfile); | |||
147 | ||||
148 | static void init_filename_language_table (void); | |||
149 | ||||
150 | void _initialize_symfile (void); | |||
151 | ||||
152 | /* List of all available sym_fns. On gdb startup, each object file reader | |||
153 | calls add_symtab_fns() to register information on each format it is | |||
154 | prepared to read. */ | |||
155 | ||||
156 | static struct sym_fns *symtab_fns = NULL((void*)0); | |||
157 | ||||
158 | /* Flag for whether user will be reloading symbols multiple times. | |||
159 | Defaults to ON for VxWorks, otherwise OFF. */ | |||
160 | ||||
161 | #ifdef SYMBOL_RELOADING_DEFAULT | |||
162 | int symbol_reloading = SYMBOL_RELOADING_DEFAULT; | |||
163 | #else | |||
164 | int symbol_reloading = 0; | |||
165 | #endif | |||
166 | ||||
167 | /* If non-zero, shared library symbols will be added automatically | |||
168 | when the inferior is created, new libraries are loaded, or when | |||
169 | attaching to the inferior. This is almost always what users will | |||
170 | want to have happen; but for very large programs, the startup time | |||
171 | will be excessive, and so if this is a problem, the user can clear | |||
172 | this flag and then add the shared library symbols as needed. Note | |||
173 | that there is a potential for confusion, since if the shared | |||
174 | library symbols are not loaded, commands like "info fun" will *not* | |||
175 | report all the functions that are actually present. */ | |||
176 | ||||
177 | int auto_solib_add = 1; | |||
178 | ||||
179 | /* For systems that support it, a threshold size in megabytes. If | |||
180 | automatically adding a new library's symbol table to those already | |||
181 | known to the debugger would cause the total shared library symbol | |||
182 | size to exceed this threshhold, then the shlib's symbols are not | |||
183 | added. The threshold is ignored if the user explicitly asks for a | |||
184 | shlib to be added, such as when using the "sharedlibrary" | |||
185 | command. */ | |||
186 | ||||
187 | int auto_solib_limit; | |||
188 | ||||
189 | ||||
190 | /* This compares two partial symbols by names, using strcmp_iw_ordered | |||
191 | for the comparison. */ | |||
192 | ||||
193 | static int | |||
194 | compare_psymbols (const void *s1p, const void *s2p) | |||
195 | { | |||
196 | struct partial_symbol *const *s1 = s1p; | |||
197 | struct partial_symbol *const *s2 = s2p; | |||
198 | ||||
199 | return strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*s1)(symbol_search_name (&(*s1)->ginfo)), | |||
200 | SYMBOL_SEARCH_NAME (*s2)(symbol_search_name (&(*s2)->ginfo))); | |||
201 | } | |||
202 | ||||
203 | void | |||
204 | sort_pst_symbols (struct partial_symtab *pst) | |||
205 | { | |||
206 | /* Sort the global list; don't sort the static list */ | |||
207 | ||||
208 | qsort (pst->objfile->global_psymbols.list + pst->globals_offset, | |||
209 | pst->n_global_syms, sizeof (struct partial_symbol *), | |||
210 | compare_psymbols); | |||
211 | } | |||
212 | ||||
213 | /* Make a null terminated copy of the string at PTR with SIZE characters in | |||
214 | the obstack pointed to by OBSTACKP . Returns the address of the copy. | |||
215 | Note that the string at PTR does not have to be null terminated, I.E. it | |||
216 | may be part of a larger string and we are only saving a substring. */ | |||
217 | ||||
218 | char * | |||
219 | obsavestring (const char *ptr, int size, struct obstack *obstackp) | |||
220 | { | |||
221 | char *p = (char *) obstack_alloc (obstackp, size + 1)__extension__ ({ struct obstack *__h = (obstackp); __extension__ ({ struct obstack *__o = (__h); int __len = ((size + 1)); if (__o->chunk_limit - __o->next_free < __len) _obstack_newchunk (__o, __len); ((__o)->next_free += (__len)); (void) 0; }) ; __extension__ ({ struct obstack *__o1 = (__h); void *value; value = (void *) __o1->object_base; if (__o1->next_free == value) __o1->maybe_empty_object = 1; __o1->next_free = (((((__o1->next_free) - (char *) 0)+__o1->alignment_mask ) & ~ (__o1->alignment_mask)) + (char *) 0); if (__o1-> next_free - (char *)__o1->chunk > __o1->chunk_limit - (char *)__o1->chunk) __o1->next_free = __o1->chunk_limit ; __o1->object_base = __o1->next_free; value; }); }); | |||
222 | /* Open-coded memcpy--saves function call time. These strings are usually | |||
223 | short. FIXME: Is this really still true with a compiler that can | |||
224 | inline memcpy? */ | |||
225 | { | |||
226 | const char *p1 = ptr; | |||
227 | char *p2 = p; | |||
228 | const char *end = ptr + size; | |||
229 | while (p1 != end) | |||
230 | *p2++ = *p1++; | |||
231 | } | |||
232 | p[size] = 0; | |||
233 | return p; | |||
234 | } | |||
235 | ||||
236 | /* Concatenate strings S1, S2 and S3; return the new string. Space is found | |||
237 | in the obstack pointed to by OBSTACKP. */ | |||
238 | ||||
239 | char * | |||
240 | obconcat (struct obstack *obstackp, const char *s1, const char *s2, | |||
241 | const char *s3) | |||
242 | { | |||
243 | int len = strlen (s1) + strlen (s2) + strlen (s3) + 1; | |||
244 | char *val = (char *) obstack_alloc (obstackp, len)__extension__ ({ struct obstack *__h = (obstackp); __extension__ ({ struct obstack *__o = (__h); int __len = ((len)); if (__o ->chunk_limit - __o->next_free < __len) _obstack_newchunk (__o, __len); ((__o)->next_free += (__len)); (void) 0; }) ; __extension__ ({ struct obstack *__o1 = (__h); void *value; value = (void *) __o1->object_base; if (__o1->next_free == value) __o1->maybe_empty_object = 1; __o1->next_free = (((((__o1->next_free) - (char *) 0)+__o1->alignment_mask ) & ~ (__o1->alignment_mask)) + (char *) 0); if (__o1-> next_free - (char *)__o1->chunk > __o1->chunk_limit - (char *)__o1->chunk) __o1->next_free = __o1->chunk_limit ; __o1->object_base = __o1->next_free; value; }); }); | |||
245 | strcpy (val, s1); | |||
246 | strcat (val, s2); | |||
247 | strcat (val, s3); | |||
248 | return val; | |||
249 | } | |||
250 | ||||
251 | /* True if we are nested inside psymtab_to_symtab. */ | |||
252 | ||||
253 | int currently_reading_symtab = 0; | |||
254 | ||||
255 | static void | |||
256 | decrement_reading_symtab (void *dummy) | |||
257 | { | |||
258 | currently_reading_symtab--; | |||
259 | } | |||
260 | ||||
261 | /* Get the symbol table that corresponds to a partial_symtab. | |||
262 | This is fast after the first time you do it. In fact, there | |||
263 | is an even faster macro PSYMTAB_TO_SYMTAB that does the fast | |||
264 | case inline. */ | |||
265 | ||||
266 | struct symtab * | |||
267 | psymtab_to_symtab (struct partial_symtab *pst) | |||
268 | { | |||
269 | /* If it's been looked up before, return it. */ | |||
270 | if (pst->symtab) | |||
271 | return pst->symtab; | |||
272 | ||||
273 | /* If it has not yet been read in, read it. */ | |||
274 | if (!pst->readin) | |||
275 | { | |||
276 | struct cleanup *back_to = make_cleanup (decrement_reading_symtab, NULL((void*)0)); | |||
277 | currently_reading_symtab++; | |||
278 | (*pst->read_symtab) (pst); | |||
279 | do_cleanups (back_to); | |||
280 | } | |||
281 | ||||
282 | return pst->symtab; | |||
283 | } | |||
284 | ||||
285 | /* Remember the lowest-addressed loadable section we've seen. | |||
286 | This function is called via bfd_map_over_sections. | |||
287 | ||||
288 | In case of equal vmas, the section with the largest size becomes the | |||
289 | lowest-addressed loadable section. | |||
290 | ||||
291 | If the vmas and sizes are equal, the last section is considered the | |||
292 | lowest-addressed loadable section. */ | |||
293 | ||||
294 | void | |||
295 | find_lowest_section (bfd *abfd, asection *sect, void *obj) | |||
296 | { | |||
297 | asection **lowest = (asection **) obj; | |||
298 | ||||
299 | if (0 == (bfd_get_section_flags (abfd, sect)((sect)->flags + 0) & SEC_LOAD0x002)) | |||
300 | return; | |||
301 | if (!*lowest) | |||
302 | *lowest = sect; /* First loadable section */ | |||
303 | else if (bfd_section_vma (abfd, *lowest)((*lowest)->vma) > bfd_section_vma (abfd, sect)((sect)->vma)) | |||
304 | *lowest = sect; /* A lower loadable section */ | |||
305 | else if (bfd_section_vma (abfd, *lowest)((*lowest)->vma) == bfd_section_vma (abfd, sect)((sect)->vma) | |||
306 | && (bfd_section_size (abfd, (*lowest))(((*lowest))->_raw_size) | |||
307 | <= bfd_section_size (abfd, sect)((sect)->_raw_size))) | |||
308 | *lowest = sect; | |||
309 | } | |||
310 | ||||
311 | /* Create a new section_addr_info, with room for NUM_SECTIONS. */ | |||
312 | ||||
313 | struct section_addr_info * | |||
314 | alloc_section_addr_info (size_t num_sections) | |||
315 | { | |||
316 | struct section_addr_info *sap; | |||
317 | size_t size; | |||
318 | ||||
319 | size = (sizeof (struct section_addr_info) | |||
320 | + sizeof (struct other_sections) * (num_sections - 1)); | |||
321 | sap = (struct section_addr_info *) xmalloc (size); | |||
322 | memset (sap, 0, size); | |||
323 | sap->num_sections = num_sections; | |||
324 | ||||
325 | return sap; | |||
326 | } | |||
327 | ||||
328 | ||||
329 | /* Return a freshly allocated copy of ADDRS. The section names, if | |||
330 | any, are also freshly allocated copies of those in ADDRS. */ | |||
331 | struct section_addr_info * | |||
332 | copy_section_addr_info (struct section_addr_info *addrs) | |||
333 | { | |||
334 | struct section_addr_info *copy | |||
335 | = alloc_section_addr_info (addrs->num_sections); | |||
336 | int i; | |||
337 | ||||
338 | copy->num_sections = addrs->num_sections; | |||
339 | for (i = 0; i < addrs->num_sections; i++) | |||
340 | { | |||
341 | copy->other[i].addr = addrs->other[i].addr; | |||
342 | if (addrs->other[i].name) | |||
343 | copy->other[i].name = xstrdup (addrs->other[i].name); | |||
344 | else | |||
345 | copy->other[i].name = NULL((void*)0); | |||
346 | copy->other[i].sectindex = addrs->other[i].sectindex; | |||
347 | } | |||
348 | ||||
349 | return copy; | |||
350 | } | |||
351 | ||||
352 | ||||
353 | ||||
354 | /* Build (allocate and populate) a section_addr_info struct from | |||
355 | an existing section table. */ | |||
356 | ||||
357 | extern struct section_addr_info * | |||
358 | build_section_addr_info_from_section_table (const struct section_table *start, | |||
359 | const struct section_table *end) | |||
360 | { | |||
361 | struct section_addr_info *sap; | |||
362 | const struct section_table *stp; | |||
363 | int oidx; | |||
364 | ||||
365 | sap = alloc_section_addr_info (end - start); | |||
366 | ||||
367 | for (stp = start, oidx = 0; stp != end; stp++) | |||
368 | { | |||
369 | if (bfd_get_section_flags (stp->bfd,((stp->the_bfd_section)->flags + 0) | |||
370 | stp->the_bfd_section)((stp->the_bfd_section)->flags + 0) & (SEC_ALLOC0x001 | SEC_LOAD0x002) | |||
371 | && oidx < end - start) | |||
372 | { | |||
373 | sap->other[oidx].addr = stp->addr; | |||
374 | sap->other[oidx].name | |||
375 | = xstrdup (bfd_section_name (stp->bfd, stp->the_bfd_section)((stp->the_bfd_section)->name)); | |||
376 | sap->other[oidx].sectindex = stp->the_bfd_section->index; | |||
377 | oidx++; | |||
378 | } | |||
379 | } | |||
380 | ||||
381 | return sap; | |||
382 | } | |||
383 | ||||
384 | ||||
385 | /* Free all memory allocated by build_section_addr_info_from_section_table. */ | |||
386 | ||||
387 | extern void | |||
388 | free_section_addr_info (struct section_addr_info *sap) | |||
389 | { | |||
390 | int idx; | |||
391 | ||||
392 | for (idx = 0; idx < sap->num_sections; idx++) | |||
393 | if (sap->other[idx].name) | |||
394 | xfree (sap->other[idx].name); | |||
395 | xfree (sap); | |||
396 | } | |||
397 | ||||
398 | ||||
399 | /* Initialize OBJFILE's sect_index_* members. */ | |||
400 | static void | |||
401 | init_objfile_sect_indices (struct objfile *objfile) | |||
402 | { | |||
403 | asection *sect; | |||
404 | int i; | |||
405 | ||||
406 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); | |||
407 | if (sect) | |||
408 | objfile->sect_index_text = sect->index; | |||
409 | ||||
410 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |||
411 | if (sect) | |||
412 | objfile->sect_index_data = sect->index; | |||
413 | ||||
414 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |||
415 | if (sect) | |||
416 | objfile->sect_index_bss = sect->index; | |||
417 | ||||
418 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |||
419 | if (sect) | |||
420 | objfile->sect_index_rodata = sect->index; | |||
421 | ||||
422 | /* This is where things get really weird... We MUST have valid | |||
423 | indices for the various sect_index_* members or gdb will abort. | |||
424 | So if for example, there is no ".text" section, we have to | |||
425 | accomodate that. Except when explicitly adding symbol files at | |||
426 | some address, section_offsets contains nothing but zeros, so it | |||
427 | doesn't matter which slot in section_offsets the individual | |||
428 | sect_index_* members index into. So if they are all zero, it is | |||
429 | safe to just point all the currently uninitialized indices to the | |||
430 | first slot. */ | |||
431 | ||||
432 | for (i = 0; i < objfile->num_sections; i++) | |||
433 | { | |||
434 | if (ANOFFSET (objfile->section_offsets, i)((i == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/symfile.c" , 434, "Section index is uninitialized"), -1) : objfile->section_offsets ->offsets[i]) != 0) | |||
435 | { | |||
436 | break; | |||
437 | } | |||
438 | } | |||
439 | if (i == objfile->num_sections) | |||
440 | { | |||
441 | if (objfile->sect_index_text == -1) | |||
442 | objfile->sect_index_text = 0; | |||
443 | if (objfile->sect_index_data == -1) | |||
444 | objfile->sect_index_data = 0; | |||
445 | if (objfile->sect_index_bss == -1) | |||
446 | objfile->sect_index_bss = 0; | |||
447 | if (objfile->sect_index_rodata == -1) | |||
448 | objfile->sect_index_rodata = 0; | |||
449 | } | |||
450 | } | |||
451 | ||||
452 | ||||
453 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |||
454 | of how to represent it for fast symbol reading. This is the default | |||
455 | version of the sym_fns.sym_offsets function for symbol readers that | |||
456 | don't need to do anything special. It allocates a section_offsets table | |||
457 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |||
458 | ||||
459 | void | |||
460 | default_symfile_offsets (struct objfile *objfile, | |||
461 | struct section_addr_info *addrs) | |||
462 | { | |||
463 | int i; | |||
464 | ||||
465 | objfile->num_sections = bfd_count_sections (objfile->obfd)((objfile->obfd)->section_count); | |||
466 | objfile->section_offsets = (struct section_offsets *) | |||
467 | obstack_alloc (&objfile->objfile_obstack,__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( ((sizeof (struct section_offsets) + sizeof (((struct section_offsets *) 0)->offsets) * ((objfile->num_sections)-1)))); if ( __o->chunk_limit - __o->next_free < __len) _obstack_newchunk (__o, __len); ((__o)->next_free += (__len)); (void) 0; }) ; __extension__ ({ struct obstack *__o1 = (__h); void *value; value = (void *) __o1->object_base; if (__o1->next_free == value) __o1->maybe_empty_object = 1; __o1->next_free = (((((__o1->next_free) - (char *) 0)+__o1->alignment_mask ) & ~ (__o1->alignment_mask)) + (char *) 0); if (__o1-> next_free - (char *)__o1->chunk > __o1->chunk_limit - (char *)__o1->chunk) __o1->next_free = __o1->chunk_limit ; __o1->object_base = __o1->next_free; value; }); }) | |||
468 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections))__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( ((sizeof (struct section_offsets) + sizeof (((struct section_offsets *) 0)->offsets) * ((objfile->num_sections)-1)))); if ( __o->chunk_limit - __o->next_free < __len) _obstack_newchunk (__o, __len); ((__o)->next_free += (__len)); (void) 0; }) ; __extension__ ({ struct obstack *__o1 = (__h); void *value; value = (void *) __o1->object_base; if (__o1->next_free == value) __o1->maybe_empty_object = 1; __o1->next_free = (((((__o1->next_free) - (char *) 0)+__o1->alignment_mask ) & ~ (__o1->alignment_mask)) + (char *) 0); if (__o1-> next_free - (char *)__o1->chunk > __o1->chunk_limit - (char *)__o1->chunk) __o1->next_free = __o1->chunk_limit ; __o1->object_base = __o1->next_free; value; }); }); | |||
469 | memset (objfile->section_offsets, 0, | |||
470 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)(sizeof (struct section_offsets) + sizeof (((struct section_offsets *) 0)->offsets) * ((objfile->num_sections)-1))); | |||
471 | ||||
472 | /* Now calculate offsets for section that were specified by the | |||
473 | caller. */ | |||
474 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) | |||
475 | { | |||
476 | struct other_sections *osp ; | |||
477 | ||||
478 | osp = &addrs->other[i] ; | |||
479 | if (osp->addr == 0) | |||
480 | continue; | |||
481 | ||||
482 | /* Record all sections in offsets */ | |||
483 | /* The section_offsets in the objfile are here filled in using | |||
484 | the BFD index. */ | |||
485 | (objfile->section_offsets)->offsets[osp->sectindex] = osp->addr; | |||
486 | } | |||
487 | ||||
488 | /* Remember the bfd indexes for the .text, .data, .bss and | |||
489 | .rodata sections. */ | |||
490 | init_objfile_sect_indices (objfile); | |||
491 | } | |||
492 | ||||
493 | ||||
494 | /* Process a symbol file, as either the main file or as a dynamically | |||
495 | loaded file. | |||
496 | ||||
497 | OBJFILE is where the symbols are to be read from. | |||
498 | ||||
499 | ADDRS is the list of section load addresses. If the user has given | |||
500 | an 'add-symbol-file' command, then this is the list of offsets and | |||
501 | addresses he or she provided as arguments to the command; or, if | |||
502 | we're handling a shared library, these are the actual addresses the | |||
503 | sections are loaded at, according to the inferior's dynamic linker | |||
504 | (as gleaned by GDB's shared library code). We convert each address | |||
505 | into an offset from the section VMA's as it appears in the object | |||
506 | file, and then call the file's sym_offsets function to convert this | |||
507 | into a format-specific offset table --- a `struct section_offsets'. | |||
508 | If ADDRS is non-zero, OFFSETS must be zero. | |||
509 | ||||
510 | OFFSETS is a table of section offsets already in the right | |||
511 | format-specific representation. NUM_OFFSETS is the number of | |||
512 | elements present in OFFSETS->offsets. If OFFSETS is non-zero, we | |||
513 | assume this is the proper table the call to sym_offsets described | |||
514 | above would produce. Instead of calling sym_offsets, we just dump | |||
515 | it right into objfile->section_offsets. (When we're re-reading | |||
516 | symbols from an objfile, we don't have the original load address | |||
517 | list any more; all we have is the section offset table.) If | |||
518 | OFFSETS is non-zero, ADDRS must be zero. | |||
519 | ||||
520 | MAINLINE is nonzero if this is the main symbol file, or zero if | |||
521 | it's an extra symbol file such as dynamically loaded code. | |||
522 | ||||
523 | VERBO is nonzero if the caller has printed a verbose message about | |||
524 | the symbol reading (and complaints can be more terse about it). */ | |||
525 | ||||
526 | void | |||
527 | syms_from_objfile (struct objfile *objfile, | |||
528 | struct section_addr_info *addrs, | |||
529 | struct section_offsets *offsets, | |||
530 | int num_offsets, | |||
531 | int mainline, | |||
532 | int verbo) | |||
533 | { | |||
534 | struct section_addr_info *local_addr = NULL((void*)0); | |||
535 | struct cleanup *old_chain; | |||
536 | ||||
537 | gdb_assert (! (addrs && offsets))((void) ((! (addrs && offsets)) ? 0 : (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/symfile.c", 537, "%s: Assertion `%s' failed." , __PRETTY_FUNCTION__, "! (addrs && offsets)"), 0))); | |||
538 | ||||
539 | init_entry_point_info (objfile); | |||
540 | find_sym_fns (objfile); | |||
541 | ||||
542 | if (objfile->sf == NULL((void*)0)) | |||
543 | return; /* No symbols. */ | |||
544 | ||||
545 | /* Make sure that partially constructed symbol tables will be cleaned up | |||
546 | if an error occurs during symbol reading. */ | |||
547 | old_chain = make_cleanup_free_objfile (objfile); | |||
548 | ||||
549 | /* If ADDRS and OFFSETS are both NULL, put together a dummy address | |||
550 | list. We now establish the convention that an addr of zero means | |||
551 | no load address was specified. */ | |||
552 | if (! addrs && ! offsets) | |||
553 | { | |||
554 | local_addr | |||
555 | = alloc_section_addr_info (bfd_count_sections (objfile->obfd)((objfile->obfd)->section_count)); | |||
556 | make_cleanup (xfree, local_addr); | |||
557 | addrs = local_addr; | |||
558 | } | |||
559 | ||||
560 | /* Now either addrs or offsets is non-zero. */ | |||
561 | ||||
562 | if (mainline) | |||
563 | { | |||
564 | /* We will modify the main symbol table, make sure that all its users | |||
565 | will be cleaned up if an error occurs during symbol reading. */ | |||
566 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); | |||
567 | ||||
568 | /* Since no error yet, throw away the old symbol table. */ | |||
569 | ||||
570 | if (symfile_objfile != NULL((void*)0)) | |||
571 | { | |||
572 | free_objfile (symfile_objfile); | |||
573 | symfile_objfile = NULL((void*)0); | |||
574 | } | |||
575 | ||||
576 | /* Currently we keep symbols from the add-symbol-file command. | |||
577 | If the user wants to get rid of them, they should do "symbol-file" | |||
578 | without arguments first. Not sure this is the best behavior | |||
579 | (PR 2207). */ | |||
580 | ||||
581 | (*objfile->sf->sym_new_init) (objfile); | |||
582 | } | |||
583 | ||||
584 | /* Convert addr into an offset rather than an absolute address. | |||
585 | We find the lowest address of a loaded segment in the objfile, | |||
586 | and assume that <addr> is where that got loaded. | |||
587 | ||||
588 | We no longer warn if the lowest section is not a text segment (as | |||
589 | happens for the PA64 port. */ | |||
590 | if (addrs && addrs->other[0].name) | |||
591 | { | |||
592 | asection *lower_sect; | |||
593 | asection *sect; | |||
594 | CORE_ADDR lower_offset; | |||
595 | int i; | |||
596 | ||||
597 | /* Find lowest loadable section to be used as starting point for | |||
598 | continguous sections. FIXME!! won't work without call to find | |||
599 | .text first, but this assumes text is lowest section. */ | |||
600 | lower_sect = bfd_get_section_by_name (objfile->obfd, ".text"); | |||
601 | if (lower_sect == NULL((void*)0)) | |||
602 | bfd_map_over_sections (objfile->obfd, find_lowest_section, | |||
603 | &lower_sect); | |||
604 | if (lower_sect == NULL((void*)0)) | |||
605 | warning ("no loadable sections found in added symbol-file %s", | |||
606 | objfile->name); | |||
607 | else | |||
608 | if ((bfd_get_section_flags (objfile->obfd, lower_sect)((lower_sect)->flags + 0) & SEC_CODE0x020) == 0) | |||
609 | warning ("Lowest section in %s is %s at %s", | |||
610 | objfile->name, | |||
611 | bfd_section_name (objfile->obfd, lower_sect)((lower_sect)->name), | |||
612 | paddr (bfd_section_vma (objfile->obfd, lower_sect)((lower_sect)->vma))); | |||
613 | if (lower_sect != NULL((void*)0)) | |||
614 | lower_offset = bfd_section_vma (objfile->obfd, lower_sect)((lower_sect)->vma); | |||
615 | else | |||
616 | lower_offset = 0; | |||
617 | ||||
618 | /* Calculate offsets for the loadable sections. | |||
619 | FIXME! Sections must be in order of increasing loadable section | |||
620 | so that contiguous sections can use the lower-offset!!! | |||
621 | ||||
622 | Adjust offsets if the segments are not contiguous. | |||
623 | If the section is contiguous, its offset should be set to | |||
624 | the offset of the highest loadable section lower than it | |||
625 | (the loadable section directly below it in memory). | |||
626 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |||
627 | ||||
628 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) | |||
629 | { | |||
630 | if (addrs->other[i].addr != 0) | |||
631 | { | |||
632 | sect = bfd_get_section_by_name (objfile->obfd, | |||
633 | addrs->other[i].name); | |||
634 | if (sect) | |||
635 | { | |||
636 | addrs->other[i].addr | |||
637 | -= bfd_section_vma (objfile->obfd, sect)((sect)->vma); | |||
638 | lower_offset = addrs->other[i].addr; | |||
639 | /* This is the index used by BFD. */ | |||
640 | addrs->other[i].sectindex = sect->index ; | |||
641 | } | |||
642 | else | |||
643 | { | |||
644 | warning ("section %s not found in %s", | |||
645 | addrs->other[i].name, | |||
646 | objfile->name); | |||
647 | addrs->other[i].addr = 0; | |||
648 | } | |||
649 | } | |||
650 | else | |||
651 | addrs->other[i].addr = lower_offset; | |||
652 | } | |||
653 | } | |||
654 | ||||
655 | /* Initialize symbol reading routines for this objfile, allow complaints to | |||
656 | appear for this new file, and record how verbose to be, then do the | |||
657 | initial symbol reading for this file. */ | |||
658 | ||||
659 | (*objfile->sf->sym_init) (objfile); | |||
660 | clear_complaints (&symfile_complaints, 1, verbo); | |||
661 | ||||
662 | if (addrs) | |||
663 | (*objfile->sf->sym_offsets) (objfile, addrs); | |||
664 | else | |||
665 | { | |||
666 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_offsets)(sizeof (struct section_offsets) + sizeof (((struct section_offsets *) 0)->offsets) * ((num_offsets)-1)); | |||
667 | ||||
668 | /* Just copy in the offset table directly as given to us. */ | |||
669 | objfile->num_sections = num_offsets; | |||
670 | objfile->section_offsets | |||
671 | = ((struct section_offsets *) | |||
672 | obstack_alloc (&objfile->objfile_obstack, size)__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( (size)); if (__o->chunk_limit - __o->next_free < __len ) _obstack_newchunk (__o, __len); ((__o)->next_free += (__len )); (void) 0; }); __extension__ ({ struct obstack *__o1 = (__h ); void *value; value = (void *) __o1->object_base; if (__o1 ->next_free == value) __o1->maybe_empty_object = 1; __o1 ->next_free = (((((__o1->next_free) - (char *) 0)+__o1-> alignment_mask) & ~ (__o1->alignment_mask)) + (char *) 0); if (__o1->next_free - (char *)__o1->chunk > __o1 ->chunk_limit - (char *)__o1->chunk) __o1->next_free = __o1->chunk_limit; __o1->object_base = __o1->next_free ; value; }); })); | |||
673 | memcpy (objfile->section_offsets, offsets, size); | |||
674 | ||||
675 | init_objfile_sect_indices (objfile); | |||
676 | } | |||
677 | ||||
678 | #ifndef DEPRECATED_IBM6000_TARGET | |||
679 | /* This is a SVR4/SunOS specific hack, I think. In any event, it | |||
680 | screws RS/6000. sym_offsets should be doing this sort of thing, | |||
681 | because it knows the mapping between bfd sections and | |||
682 | section_offsets. */ | |||
683 | /* This is a hack. As far as I can tell, section offsets are not | |||
684 | target dependent. They are all set to addr with a couple of | |||
685 | exceptions. The exceptions are sysvr4 shared libraries, whose | |||
686 | offsets are kept in solib structures anyway and rs6000 xcoff | |||
687 | which handles shared libraries in a completely unique way. | |||
688 | ||||
689 | Section offsets are built similarly, except that they are built | |||
690 | by adding addr in all cases because there is no clear mapping | |||
691 | from section_offsets into actual sections. Note that solib.c | |||
692 | has a different algorithm for finding section offsets. | |||
693 | ||||
694 | These should probably all be collapsed into some target | |||
695 | independent form of shared library support. FIXME. */ | |||
696 | ||||
697 | if (addrs) | |||
698 | { | |||
699 | struct obj_section *s; | |||
700 | ||||
701 | /* Map section offsets in "addr" back to the object's | |||
702 | sections by comparing the section names with bfd's | |||
703 | section names. Then adjust the section address by | |||
704 | the offset. */ /* for gdb/13815 */ | |||
705 | ||||
706 | ALL_OBJFILE_OSECTIONS (objfile, s)for (s = objfile->sections; s < objfile->sections_end ; s++) | |||
707 | { | |||
708 | CORE_ADDR s_addr = 0; | |||
709 | int i; | |||
710 | ||||
711 | for (i = 0; | |||
712 | !s_addr && i < addrs->num_sections && addrs->other[i].name; | |||
713 | i++) | |||
714 | if (strcmp (bfd_section_name (s->objfile->obfd,((s->the_bfd_section)->name) | |||
715 | s->the_bfd_section)((s->the_bfd_section)->name), | |||
716 | addrs->other[i].name) == 0) | |||
717 | s_addr = addrs->other[i].addr; /* end added for gdb/13815 */ | |||
718 | ||||
719 | s->addr -= s->offset; | |||
720 | s->addr += s_addr; | |||
721 | s->endaddr -= s->offset; | |||
722 | s->endaddr += s_addr; | |||
723 | s->offset += s_addr; | |||
724 | } | |||
725 | } | |||
726 | #endif /* not DEPRECATED_IBM6000_TARGET */ | |||
727 | ||||
728 | (*objfile->sf->sym_read) (objfile, mainline); | |||
729 | ||||
730 | /* Don't allow char * to have a typename (else would get caddr_t). | |||
731 | Ditto void *. FIXME: Check whether this is now done by all the | |||
732 | symbol readers themselves (many of them now do), and if so remove | |||
733 | it from here. */ | |||
734 | ||||
735 | TYPE_NAME (lookup_pointer_type (builtin_type_char))(lookup_pointer_type (builtin_type_char))->main_type->name = 0; | |||
736 | TYPE_NAME (lookup_pointer_type (builtin_type_void))(lookup_pointer_type (builtin_type_void))->main_type->name = 0; | |||
737 | ||||
738 | /* Mark the objfile has having had initial symbol read attempted. Note | |||
739 | that this does not mean we found any symbols... */ | |||
740 | ||||
741 | objfile->flags |= OBJF_SYMS(1 << 1); | |||
742 | ||||
743 | /* Discard cleanups as symbol reading was successful. */ | |||
744 | ||||
745 | discard_cleanups (old_chain); | |||
746 | } | |||
747 | ||||
748 | /* Perform required actions after either reading in the initial | |||
749 | symbols for a new objfile, or mapping in the symbols from a reusable | |||
750 | objfile. */ | |||
751 | ||||
752 | void | |||
753 | new_symfile_objfile (struct objfile *objfile, int mainline, int verbo) | |||
754 | { | |||
755 | ||||
756 | /* If this is the main symbol file we have to clean up all users of the | |||
757 | old main symbol file. Otherwise it is sufficient to fixup all the | |||
758 | breakpoints that may have been redefined by this symbol file. */ | |||
759 | if (mainline) | |||
760 | { | |||
761 | /* OK, make it the "real" symbol file. */ | |||
762 | symfile_objfile = objfile; | |||
763 | ||||
764 | clear_symtab_users (); | |||
765 | } | |||
766 | else | |||
767 | { | |||
768 | breakpoint_re_set (); | |||
769 | } | |||
770 | ||||
771 | /* We're done reading the symbol file; finish off complaints. */ | |||
772 | clear_complaints (&symfile_complaints, 0, verbo); | |||
773 | } | |||
774 | ||||
775 | /* Process a symbol file, as either the main file or as a dynamically | |||
776 | loaded file. | |||
777 | ||||
778 | ABFD is a BFD already open on the file, as from symfile_bfd_open. | |||
779 | This BFD will be closed on error, and is always consumed by this function. | |||
780 | ||||
781 | FROM_TTY says how verbose to be. | |||
782 | ||||
783 | MAINLINE specifies whether this is the main symbol file, or whether | |||
784 | it's an extra symbol file such as dynamically loaded code. | |||
785 | ||||
786 | ADDRS, OFFSETS, and NUM_OFFSETS are as described for | |||
787 | syms_from_objfile, above. ADDRS is ignored when MAINLINE is | |||
788 | non-zero. | |||
789 | ||||
790 | Upon success, returns a pointer to the objfile that was added. | |||
791 | Upon failure, jumps back to command level (never returns). */ | |||
792 | static struct objfile * | |||
793 | symbol_file_add_with_addrs_or_offsets (bfd *abfd, int from_tty, | |||
794 | struct section_addr_info *addrs, | |||
795 | struct section_offsets *offsets, | |||
796 | int num_offsets, | |||
797 | int mainline, int flags) | |||
798 | { | |||
799 | struct objfile *objfile; | |||
800 | struct partial_symtab *psymtab; | |||
801 | char *debugfile; | |||
802 | struct section_addr_info *orig_addrs = NULL((void*)0); | |||
803 | struct cleanup *my_cleanups; | |||
804 | const char *name = bfd_get_filename (abfd)((char *) (abfd)->filename); | |||
805 | ||||
806 | my_cleanups = make_cleanup_bfd_close (abfd); | |||
807 | ||||
808 | /* Give user a chance to burp if we'd be | |||
809 | interactively wiping out any existing symbols. */ | |||
810 | ||||
811 | if ((have_full_symbols () || have_partial_symbols ()) | |||
812 | && mainline | |||
813 | && from_tty | |||
814 | && !query ("Load new symbol table from \"%s\"? ", name)) | |||
815 | error ("Not confirmed."); | |||
816 | ||||
817 | objfile = allocate_objfile (abfd, flags); | |||
818 | discard_cleanups (my_cleanups); | |||
819 | ||||
820 | if (addrs) | |||
821 | { | |||
822 | orig_addrs = copy_section_addr_info (addrs); | |||
823 | make_cleanup_free_section_addr_info (orig_addrs); | |||
824 | } | |||
825 | ||||
826 | /* We either created a new mapped symbol table, mapped an existing | |||
827 | symbol table file which has not had initial symbol reading | |||
828 | performed, or need to read an unmapped symbol table. */ | |||
829 | if (from_tty || info_verbose) | |||
830 | { | |||
831 | if (deprecated_pre_add_symbol_hook) | |||
832 | deprecated_pre_add_symbol_hook (name); | |||
833 | else | |||
834 | { | |||
835 | printf_unfiltered ("Reading symbols from %s...", name); | |||
836 | wrap_here (""); | |||
837 | gdb_flush (gdb_stdout); | |||
838 | } | |||
839 | } | |||
840 | syms_from_objfile (objfile, addrs, offsets, num_offsets, | |||
841 | mainline, from_tty); | |||
842 | ||||
843 | /* We now have at least a partial symbol table. Check to see if the | |||
844 | user requested that all symbols be read on initial access via either | |||
845 | the gdb startup command line or on a per symbol file basis. Expand | |||
846 | all partial symbol tables for this objfile if so. */ | |||
847 | ||||
848 | if ((flags & OBJF_READNOW(1 << 4)) || readnow_symbol_files) | |||
849 | { | |||
850 | if (from_tty || info_verbose) | |||
851 | { | |||
852 | printf_unfiltered ("expanding to full symbols..."); | |||
853 | wrap_here (""); | |||
854 | gdb_flush (gdb_stdout); | |||
855 | } | |||
856 | ||||
857 | for (psymtab = objfile->psymtabs; | |||
858 | psymtab != NULL((void*)0); | |||
859 | psymtab = psymtab->next) | |||
860 | { | |||
861 | psymtab_to_symtab (psymtab); | |||
862 | } | |||
863 | } | |||
864 | ||||
865 | debugfile = find_separate_debug_file (objfile); | |||
866 | if (debugfile) | |||
867 | { | |||
868 | if (addrs != NULL((void*)0)) | |||
869 | { | |||
870 | objfile->separate_debug_objfile | |||
871 | = symbol_file_add (debugfile, from_tty, orig_addrs, 0, flags); | |||
872 | } | |||
873 | else | |||
874 | { | |||
875 | objfile->separate_debug_objfile | |||
876 | = symbol_file_add (debugfile, from_tty, NULL((void*)0), 0, flags); | |||
877 | } | |||
878 | objfile->separate_debug_objfile->separate_debug_objfile_backlink | |||
879 | = objfile; | |||
880 | ||||
881 | /* Put the separate debug object before the normal one, this is so that | |||
882 | usage of the ALL_OBJFILES_SAFE macro will stay safe. */ | |||
883 | put_objfile_before (objfile->separate_debug_objfile, objfile); | |||
884 | ||||
885 | xfree (debugfile); | |||
886 | } | |||
887 | ||||
888 | if (!have_partial_symbols () && !have_full_symbols ()) | |||
889 | { | |||
890 | wrap_here (""); | |||
891 | printf_filtered ("(no debugging symbols found)"); | |||
892 | if (from_tty || info_verbose) | |||
893 | printf_filtered ("..."); | |||
894 | else | |||
895 | printf_filtered ("\n"); | |||
896 | wrap_here (""); | |||
897 | } | |||
898 | ||||
899 | if (from_tty || info_verbose) | |||
900 | { | |||
901 | if (deprecated_post_add_symbol_hook) | |||
902 | deprecated_post_add_symbol_hook (); | |||
903 | else | |||
904 | { | |||
905 | printf_unfiltered ("done.\n"); | |||
906 | } | |||
907 | } | |||
908 | ||||
909 | /* We print some messages regardless of whether 'from_tty || | |||
910 | info_verbose' is true, so make sure they go out at the right | |||
911 | time. */ | |||
912 | gdb_flush (gdb_stdout); | |||
913 | ||||
914 | do_cleanups (my_cleanups); | |||
915 | ||||
916 | if (objfile->sf == NULL((void*)0)) | |||
917 | return objfile; /* No symbols. */ | |||
918 | ||||
919 | new_symfile_objfile (objfile, mainline, from_tty); | |||
920 | ||||
921 | if (deprecated_target_new_objfile_hook) | |||
922 | deprecated_target_new_objfile_hook (objfile); | |||
923 | ||||
924 | bfd_cache_close_all (); | |||
925 | return (objfile); | |||
926 | } | |||
927 | ||||
928 | ||||
929 | /* Process the symbol file ABFD, as either the main file or as a | |||
930 | dynamically loaded file. | |||
931 | ||||
932 | See symbol_file_add_with_addrs_or_offsets's comments for | |||
933 | details. */ | |||
934 | struct objfile * | |||
935 | symbol_file_add_from_bfd (bfd *abfd, int from_tty, | |||
936 | struct section_addr_info *addrs, | |||
937 | int mainline, int flags) | |||
938 | { | |||
939 | return symbol_file_add_with_addrs_or_offsets (abfd, | |||
940 | from_tty, addrs, 0, 0, | |||
941 | mainline, flags); | |||
942 | } | |||
943 | ||||
944 | ||||
945 | /* Process a symbol file, as either the main file or as a dynamically | |||
946 | loaded file. See symbol_file_add_with_addrs_or_offsets's comments | |||
947 | for details. */ | |||
948 | struct objfile * | |||
949 | symbol_file_add (char *name, int from_tty, struct section_addr_info *addrs, | |||
950 | int mainline, int flags) | |||
951 | { | |||
952 | return symbol_file_add_from_bfd (symfile_bfd_open (name), from_tty, | |||
953 | addrs, mainline, flags); | |||
954 | } | |||
955 | ||||
956 | ||||
957 | /* Call symbol_file_add() with default values and update whatever is | |||
958 | affected by the loading of a new main(). | |||
959 | Used when the file is supplied in the gdb command line | |||
960 | and by some targets with special loading requirements. | |||
961 | The auxiliary function, symbol_file_add_main_1(), has the flags | |||
962 | argument for the switches that can only be specified in the symbol_file | |||
963 | command itself. */ | |||
964 | ||||
965 | void | |||
966 | symbol_file_add_main (char *args, int from_tty) | |||
967 | { | |||
968 | symbol_file_add_main_1 (args, from_tty, 0); | |||
969 | } | |||
970 | ||||
971 | static void | |||
972 | symbol_file_add_main_1 (char *args, int from_tty, int flags) | |||
973 | { | |||
974 | symbol_file_add (args, from_tty, NULL((void*)0), 1, flags); | |||
975 | ||||
976 | /* Getting new symbols may change our opinion about | |||
977 | what is frameless. */ | |||
978 | reinit_frame_cache (); | |||
979 | ||||
980 | set_initial_language (); | |||
981 | } | |||
982 | ||||
983 | void | |||
984 | symbol_file_clear (int from_tty) | |||
985 | { | |||
986 | if ((have_full_symbols () || have_partial_symbols ()) | |||
987 | && from_tty | |||
988 | && !query ("Discard symbol table from `%s'? ", | |||
989 | symfile_objfile->name)) | |||
990 | error ("Not confirmed."); | |||
991 | #ifdef CLEAR_SOLIBclear_solib | |||
992 | CLEAR_SOLIBclear_solib (); | |||
993 | #endif | |||
994 | ||||
995 | free_all_objfiles (); | |||
996 | ||||
997 | /* solib descriptors may have handles to objfiles. Since their | |||
998 | storage has just been released, we'd better wipe the solib | |||
999 | descriptors as well. | |||
1000 | */ | |||
1001 | #if defined(SOLIB_RESTART) | |||
1002 | SOLIB_RESTART ()(0); | |||
1003 | #endif | |||
1004 | ||||
1005 | symfile_objfile = NULL((void*)0); | |||
1006 | if (from_tty) | |||
1007 | printf_unfiltered ("No symbol file now.\n"); | |||
1008 | } | |||
1009 | ||||
1010 | static char * | |||
1011 | get_debug_link_info (struct objfile *objfile, unsigned long *crc32_out) | |||
1012 | { | |||
1013 | asection *sect; | |||
1014 | bfd_size_type debuglink_size; | |||
1015 | unsigned long crc32; | |||
1016 | char *contents; | |||
1017 | int crc_offset; | |||
1018 | unsigned char *p; | |||
1019 | ||||
1020 | sect = bfd_get_section_by_name (objfile->obfd, ".gnu_debuglink"); | |||
1021 | ||||
1022 | if (sect == NULL((void*)0)) | |||
1023 | return NULL((void*)0); | |||
1024 | ||||
1025 | debuglink_size = bfd_section_size (objfile->obfd, sect)((sect)->_raw_size); | |||
1026 | ||||
1027 | contents = xmalloc (debuglink_size); | |||
1028 | bfd_get_section_contents (objfile->obfd, sect, contents, | |||
1029 | (file_ptr)0, (bfd_size_type)debuglink_size); | |||
1030 | ||||
1031 | /* Crc value is stored after the filename, aligned up to 4 bytes. */ | |||
1032 | crc_offset = strlen (contents) + 1; | |||
1033 | crc_offset = (crc_offset + 3) & ~3; | |||
1034 | ||||
1035 | crc32 = bfd_get_32 (objfile->obfd, (bfd_byte *) (contents + crc_offset))((*((objfile->obfd)->xvec->bfd_getx32)) ((bfd_byte * ) (contents + crc_offset))); | |||
1036 | ||||
1037 | *crc32_out = crc32; | |||
1038 | return contents; | |||
1039 | } | |||
1040 | ||||
1041 | static int | |||
1042 | separate_debug_file_exists (const char *name, unsigned long crc) | |||
1043 | { | |||
1044 | unsigned long file_crc = 0; | |||
1045 | int fd; | |||
1046 | char buffer[8*1024]; | |||
1047 | int count; | |||
1048 | ||||
1049 | fd = open (name, O_RDONLY0x0000 | O_BINARY0); | |||
1050 | if (fd < 0) | |||
1051 | return 0; | |||
1052 | ||||
1053 | while ((count = read (fd, buffer, sizeof (buffer))) > 0) | |||
1054 | file_crc = gnu_debuglink_crc32 (file_crc, buffer, count); | |||
1055 | ||||
1056 | close (fd); | |||
1057 | ||||
1058 | return crc == file_crc; | |||
1059 | } | |||
1060 | ||||
1061 | static char *debug_file_directory = NULL((void*)0); | |||
1062 | ||||
1063 | #if ! defined (DEBUG_SUBDIRECTORY".debug") | |||
1064 | #define DEBUG_SUBDIRECTORY".debug" ".debug" | |||
1065 | #endif | |||
1066 | ||||
1067 | static char * | |||
1068 | find_separate_debug_file (struct objfile *objfile) | |||
1069 | { | |||
1070 | asection *sect; | |||
1071 | char *basename; | |||
1072 | char *dir; | |||
1073 | char *debugfile; | |||
1074 | char *name_copy; | |||
1075 | bfd_size_type debuglink_size; | |||
1076 | unsigned long crc32; | |||
1077 | int i; | |||
1078 | ||||
1079 | basename = get_debug_link_info (objfile, &crc32); | |||
1080 | ||||
1081 | if (basename == NULL((void*)0)) | |||
1082 | return NULL((void*)0); | |||
1083 | ||||
1084 | dir = xstrdup (objfile->name); | |||
1085 | ||||
1086 | /* Strip off the final filename part, leaving the directory name, | |||
1087 | followed by a slash. Objfile names should always be absolute and | |||
1088 | tilde-expanded, so there should always be a slash in there | |||
1089 | somewhere. */ | |||
1090 | for (i = strlen(dir) - 1; i >= 0; i--) | |||
1091 | { | |||
1092 | if (IS_DIR_SEPARATOR (dir[i])((dir[i]) == '/')) | |||
1093 | break; | |||
1094 | } | |||
1095 | gdb_assert (i >= 0 && IS_DIR_SEPARATOR (dir[i]))((void) ((i >= 0 && ((dir[i]) == '/')) ? 0 : (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/symfile.c", 1095, "%s: Assertion `%s' failed." , __PRETTY_FUNCTION__, "i >= 0 && IS_DIR_SEPARATOR (dir[i])" ), 0))); | |||
1096 | dir[i+1] = '\0'; | |||
1097 | ||||
1098 | debugfile = alloca (strlen (debug_file_directory) + 1__builtin_alloca(strlen (debug_file_directory) + 1 + strlen ( dir) + strlen (".debug") + strlen ("/") + strlen (basename) + 1) | |||
1099 | + strlen (dir)__builtin_alloca(strlen (debug_file_directory) + 1 + strlen ( dir) + strlen (".debug") + strlen ("/") + strlen (basename) + 1) | |||
1100 | + strlen (DEBUG_SUBDIRECTORY)__builtin_alloca(strlen (debug_file_directory) + 1 + strlen ( dir) + strlen (".debug") + strlen ("/") + strlen (basename) + 1) | |||
1101 | + strlen ("/")__builtin_alloca(strlen (debug_file_directory) + 1 + strlen ( dir) + strlen (".debug") + strlen ("/") + strlen (basename) + 1) | |||
1102 | + strlen (basename)__builtin_alloca(strlen (debug_file_directory) + 1 + strlen ( dir) + strlen (".debug") + strlen ("/") + strlen (basename) + 1) | |||
1103 | + 1)__builtin_alloca(strlen (debug_file_directory) + 1 + strlen ( dir) + strlen (".debug") + strlen ("/") + strlen (basename) + 1); | |||
1104 | ||||
1105 | /* First try in the same directory as the original file. */ | |||
1106 | strcpy (debugfile, dir); | |||
1107 | strcat (debugfile, basename); | |||
1108 | ||||
1109 | if (separate_debug_file_exists (debugfile, crc32)) | |||
1110 | { | |||
1111 | xfree (basename); | |||
1112 | xfree (dir); | |||
1113 | return xstrdup (debugfile); | |||
1114 | } | |||
1115 | ||||
1116 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ | |||
1117 | strcpy (debugfile, dir); | |||
1118 | strcat (debugfile, DEBUG_SUBDIRECTORY".debug"); | |||
1119 | strcat (debugfile, "/"); | |||
1120 | strcat (debugfile, basename); | |||
1121 | ||||
1122 | if (separate_debug_file_exists (debugfile, crc32)) | |||
1123 | { | |||
1124 | xfree (basename); | |||
1125 | xfree (dir); | |||
1126 | return xstrdup (debugfile); | |||
1127 | } | |||
1128 | ||||
1129 | /* Then try in the global debugfile directory. */ | |||
1130 | strcpy (debugfile, debug_file_directory); | |||
1131 | strcat (debugfile, "/"); | |||
1132 | strcat (debugfile, dir); | |||
1133 | strcat (debugfile, basename); | |||
1134 | ||||
1135 | if (separate_debug_file_exists (debugfile, crc32)) | |||
1136 | { | |||
1137 | xfree (basename); | |||
1138 | xfree (dir); | |||
1139 | return xstrdup (debugfile); | |||
1140 | } | |||
1141 | ||||
1142 | xfree (basename); | |||
1143 | xfree (dir); | |||
1144 | return NULL((void*)0); | |||
1145 | } | |||
1146 | ||||
1147 | ||||
1148 | /* This is the symbol-file command. Read the file, analyze its | |||
1149 | symbols, and add a struct symtab to a symtab list. The syntax of | |||
1150 | the command is rather bizarre--(1) buildargv implements various | |||
1151 | quoting conventions which are undocumented and have little or | |||
1152 | nothing in common with the way things are quoted (or not quoted) | |||
1153 | elsewhere in GDB, (2) options are used, which are not generally | |||
1154 | used in GDB (perhaps "set mapped on", "set readnow on" would be | |||
1155 | better), (3) the order of options matters, which is contrary to GNU | |||
1156 | conventions (because it is confusing and inconvenient). */ | |||
1157 | /* Note: ezannoni 2000-04-17. This function used to have support for | |||
1158 | rombug (see remote-os9k.c). It consisted of a call to target_link() | |||
1159 | (target.c) to get the address of the text segment from the target, | |||
1160 | and pass that to symbol_file_add(). This is no longer supported. */ | |||
1161 | ||||
1162 | void | |||
1163 | symbol_file_command (char *args, int from_tty) | |||
1164 | { | |||
1165 | char **argv; | |||
1166 | char *name = NULL((void*)0); | |||
1167 | struct cleanup *cleanups; | |||
1168 | int flags = OBJF_USERLOADED(1 << 5); | |||
1169 | ||||
1170 | dont_repeat (); | |||
1171 | ||||
1172 | if (args == NULL((void*)0)) | |||
1173 | { | |||
1174 | symbol_file_clear (from_tty); | |||
1175 | } | |||
1176 | else | |||
1177 | { | |||
1178 | if ((argv = buildargv (args)) == NULL((void*)0)) | |||
1179 | { | |||
1180 | nomem (0); | |||
1181 | } | |||
1182 | cleanups = make_cleanup_freeargv (argv); | |||
1183 | while (*argv != NULL((void*)0)) | |||
1184 | { | |||
1185 | if (strcmp (*argv, "-readnow") == 0) | |||
1186 | flags |= OBJF_READNOW(1 << 4); | |||
1187 | else if (**argv == '-') | |||
1188 | error ("unknown option `%s'", *argv); | |||
1189 | else | |||
1190 | { | |||
1191 | name = *argv; | |||
1192 | ||||
1193 | symbol_file_add_main_1 (name, from_tty, flags); | |||
1194 | } | |||
1195 | argv++; | |||
1196 | } | |||
1197 | ||||
1198 | if (name == NULL((void*)0)) | |||
1199 | { | |||
1200 | error ("no symbol file name was specified"); | |||
1201 | } | |||
1202 | do_cleanups (cleanups); | |||
1203 | } | |||
1204 | } | |||
1205 | ||||
1206 | /* Set the initial language. | |||
1207 | ||||
1208 | A better solution would be to record the language in the psymtab when reading | |||
1209 | partial symbols, and then use it (if known) to set the language. This would | |||
1210 | be a win for formats that encode the language in an easily discoverable place, | |||
1211 | such as DWARF. For stabs, we can jump through hoops looking for specially | |||
1212 | named symbols or try to intuit the language from the specific type of stabs | |||
1213 | we find, but we can't do that until later when we read in full symbols. | |||
1214 | FIXME. */ | |||
1215 | ||||
1216 | static void | |||
1217 | set_initial_language (void) | |||
1218 | { | |||
1219 | struct partial_symtab *pst; | |||
1220 | enum language lang = language_unknown; | |||
1221 | ||||
1222 | pst = find_main_psymtab (); | |||
1223 | if (pst != NULL((void*)0)) | |||
1224 | { | |||
1225 | if (pst->filename != NULL((void*)0)) | |||
1226 | { | |||
1227 | lang = deduce_language_from_filename (pst->filename); | |||
1228 | } | |||
1229 | if (lang == language_unknown) | |||
1230 | { | |||
1231 | /* Make C the default language */ | |||
1232 | lang = language_c; | |||
1233 | } | |||
1234 | set_language (lang); | |||
1235 | expected_language = current_language; /* Don't warn the user */ | |||
1236 | } | |||
1237 | } | |||
1238 | ||||
1239 | /* Open file specified by NAME and hand it off to BFD for preliminary | |||
1240 | analysis. Result is a newly initialized bfd *, which includes a newly | |||
1241 | malloc'd` copy of NAME (tilde-expanded and made absolute). | |||
1242 | In case of trouble, error() is called. */ | |||
1243 | ||||
1244 | bfd * | |||
1245 | symfile_bfd_open (char *name) | |||
1246 | { | |||
1247 | bfd *sym_bfd; | |||
1248 | int desc; | |||
1249 | char *absolute_name; | |||
1250 | ||||
1251 | ||||
1252 | ||||
1253 | name = tilde_expand (name); /* Returns 1st new malloc'd copy */ | |||
1254 | ||||
1255 | /* Look down path for it, allocate 2nd new malloc'd copy. */ | |||
1256 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST0x01, name, O_RDONLY0x0000 | O_BINARY0, | |||
1257 | 0, &absolute_name); | |||
1258 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) | |||
1259 | if (desc < 0) | |||
1260 | { | |||
1261 | char *exename = alloca (strlen (name) + 5)__builtin_alloca(strlen (name) + 5); | |||
1262 | strcat (strcpy (exename, name), ".exe"); | |||
1263 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST0x01, exename, | |||
1264 | O_RDONLY0x0000 | O_BINARY0, 0, &absolute_name); | |||
1265 | } | |||
1266 | #endif | |||
1267 | if (desc < 0) | |||
1268 | { | |||
1269 | make_cleanup (xfree, name); | |||
1270 | perror_with_name (name); | |||
1271 | } | |||
1272 | xfree (name); /* Free 1st new malloc'd copy */ | |||
1273 | name = absolute_name; /* Keep 2nd malloc'd copy in bfd */ | |||
1274 | /* It'll be freed in free_objfile(). */ | |||
1275 | ||||
1276 | sym_bfd = bfd_fdopenr (name, gnutarget, desc); | |||
1277 | if (!sym_bfd) | |||
1278 | { | |||
1279 | close (desc); | |||
1280 | make_cleanup (xfree, name); | |||
1281 | error ("\"%s\": can't open to read symbols: %s.", name, | |||
1282 | bfd_errmsg (bfd_get_error ())); | |||
1283 | } | |||
1284 | bfd_set_cacheable (sym_bfd, 1)(((sym_bfd)->cacheable = 1), 1); | |||
1285 | ||||
1286 | if (!bfd_check_format (sym_bfd, bfd_object)) | |||
1287 | { | |||
1288 | /* FIXME: should be checking for errors from bfd_close (for one thing, | |||
1289 | on error it does not free all the storage associated with the | |||
1290 | bfd). */ | |||
1291 | bfd_close (sym_bfd); /* This also closes desc */ | |||
1292 | make_cleanup (xfree, name); | |||
1293 | error ("\"%s\": can't read symbols: %s.", name, | |||
1294 | bfd_errmsg (bfd_get_error ())); | |||
1295 | } | |||
1296 | return (sym_bfd); | |||
1297 | } | |||
1298 | ||||
1299 | /* Return the section index for the given section name. Return -1 if | |||
1300 | the section was not found. */ | |||
1301 | int | |||
1302 | get_section_index (struct objfile *objfile, char *section_name) | |||
1303 | { | |||
1304 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |||
1305 | if (sect) | |||
1306 | return sect->index; | |||
1307 | else | |||
1308 | return -1; | |||
1309 | } | |||
1310 | ||||
1311 | /* Link a new symtab_fns into the global symtab_fns list. Called on gdb | |||
1312 | startup by the _initialize routine in each object file format reader, | |||
1313 | to register information about each format the the reader is prepared | |||
1314 | to handle. */ | |||
1315 | ||||
1316 | void | |||
1317 | add_symtab_fns (struct sym_fns *sf) | |||
1318 | { | |||
1319 | sf->next = symtab_fns; | |||
1320 | symtab_fns = sf; | |||
1321 | } | |||
1322 | ||||
1323 | ||||
1324 | /* Initialize to read symbols from the symbol file sym_bfd. It either | |||
1325 | returns or calls error(). The result is an initialized struct sym_fns | |||
1326 | in the objfile structure, that contains cached information about the | |||
1327 | symbol file. */ | |||
1328 | ||||
1329 | static void | |||
1330 | find_sym_fns (struct objfile *objfile) | |||
1331 | { | |||
1332 | struct sym_fns *sf; | |||
1333 | enum bfd_flavour our_flavour = bfd_get_flavour (objfile->obfd)((objfile->obfd)->xvec->flavour); | |||
1334 | char *our_target = bfd_get_target (objfile->obfd)((objfile->obfd)->xvec->name); | |||
1335 | ||||
1336 | if (our_flavour == bfd_target_srec_flavour | |||
1337 | || our_flavour == bfd_target_ihex_flavour | |||
1338 | || our_flavour == bfd_target_tekhex_flavour) | |||
1339 | return; /* No symbols. */ | |||
1340 | ||||
1341 | for (sf = symtab_fns; sf != NULL((void*)0); sf = sf->next) | |||
1342 | { | |||
1343 | if (our_flavour == sf->sym_flavour) | |||
1344 | { | |||
1345 | objfile->sf = sf; | |||
1346 | return; | |||
1347 | } | |||
1348 | } | |||
1349 | error ("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown.", | |||
1350 | bfd_get_target (objfile->obfd)((objfile->obfd)->xvec->name)); | |||
1351 | } | |||
1352 | ||||
1353 | /* This function runs the load command of our current target. */ | |||
1354 | ||||
1355 | static void | |||
1356 | load_command (char *arg, int from_tty) | |||
1357 | { | |||
1358 | if (arg == NULL((void*)0)) | |||
1359 | arg = get_exec_file (1); | |||
1360 | target_load (arg, from_tty); | |||
1361 | ||||
1362 | /* After re-loading the executable, we don't really know which | |||
1363 | overlays are mapped any more. */ | |||
1364 | overlay_cache_invalid = 1; | |||
1365 | } | |||
1366 | ||||
1367 | /* This version of "load" should be usable for any target. Currently | |||
1368 | it is just used for remote targets, not inftarg.c or core files, | |||
1369 | on the theory that only in that case is it useful. | |||
1370 | ||||
1371 | Avoiding xmodem and the like seems like a win (a) because we don't have | |||
1372 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |||
1373 | we don't want to run a subprocess. On the other hand, I'm not sure how | |||
1374 | performance compares. */ | |||
1375 | ||||
1376 | static int download_write_size = 512; | |||
1377 | static int validate_download = 0; | |||
1378 | ||||
1379 | /* Callback service function for generic_load (bfd_map_over_sections). */ | |||
1380 | ||||
1381 | static void | |||
1382 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |||
1383 | { | |||
1384 | bfd_size_type *sum = data; | |||
1385 | ||||
1386 | *sum += bfd_get_section_size (asec)((asec)->_raw_size); | |||
1387 | } | |||
1388 | ||||
1389 | /* Opaque data for load_section_callback. */ | |||
1390 | struct load_section_data { | |||
1391 | unsigned long load_offset; | |||
1392 | unsigned long write_count; | |||
1393 | unsigned long data_count; | |||
1394 | bfd_size_type total_size; | |||
1395 | }; | |||
1396 | ||||
1397 | /* Callback service function for generic_load (bfd_map_over_sections). */ | |||
1398 | ||||
1399 | static void | |||
1400 | load_section_callback (bfd *abfd, asection *asec, void *data) | |||
1401 | { | |||
1402 | struct load_section_data *args = data; | |||
1403 | ||||
1404 | if (bfd_get_section_flags (abfd, asec)((asec)->flags + 0) & SEC_LOAD0x002) | |||
1405 | { | |||
1406 | bfd_size_type size = bfd_get_section_size (asec)((asec)->_raw_size); | |||
1407 | if (size > 0) | |||
1408 | { | |||
1409 | char *buffer; | |||
1410 | struct cleanup *old_chain; | |||
1411 | CORE_ADDR lma = bfd_section_lma (abfd, asec)((asec)->lma) + args->load_offset; | |||
1412 | bfd_size_type block_size; | |||
1413 | int err; | |||
1414 | const char *sect_name = bfd_get_section_name (abfd, asec)((asec)->name + 0); | |||
1415 | bfd_size_type sent; | |||
1416 | ||||
1417 | if (download_write_size > 0 && size > download_write_size) | |||
1418 | block_size = download_write_size; | |||
1419 | else | |||
1420 | block_size = size; | |||
1421 | ||||
1422 | buffer = xmalloc (size); | |||
1423 | old_chain = make_cleanup (xfree, buffer); | |||
1424 | ||||
1425 | /* Is this really necessary? I guess it gives the user something | |||
1426 | to look at during a long download. */ | |||
1427 | ui_out_message (uiout, 0, "Loading section %s, size 0x%s lma 0x%s\n", | |||
1428 | sect_name, paddr_nz (size), paddr_nz (lma)); | |||
1429 | ||||
1430 | bfd_get_section_contents (abfd, asec, buffer, 0, size); | |||
1431 | ||||
1432 | sent = 0; | |||
1433 | do | |||
1434 | { | |||
1435 | int len; | |||
1436 | bfd_size_type this_transfer = size - sent; | |||
1437 | ||||
1438 | if (this_transfer >= block_size) | |||
1439 | this_transfer = block_size; | |||
1440 | len = target_write_memory_partial (lma, buffer, | |||
1441 | this_transfer, &err); | |||
1442 | if (err) | |||
1443 | break; | |||
1444 | if (validate_download) | |||
1445 | { | |||
1446 | /* Broken memories and broken monitors manifest | |||
1447 | themselves here when bring new computers to | |||
1448 | life. This doubles already slow downloads. */ | |||
1449 | /* NOTE: cagney/1999-10-18: A more efficient | |||
1450 | implementation might add a verify_memory() | |||
1451 | method to the target vector and then use | |||
1452 | that. remote.c could implement that method | |||
1453 | using the ``qCRC'' packet. */ | |||
1454 | char *check = xmalloc (len); | |||
1455 | struct cleanup *verify_cleanups = | |||
1456 | make_cleanup (xfree, check); | |||
1457 | ||||
1458 | if (target_read_memory (lma, check, len) != 0) | |||
1459 | error ("Download verify read failed at 0x%s", | |||
1460 | paddr (lma)); | |||
1461 | if (memcmp (buffer, check, len) != 0) | |||
1462 | error ("Download verify compare failed at 0x%s", | |||
1463 | paddr (lma)); | |||
1464 | do_cleanups (verify_cleanups); | |||
1465 | } | |||
1466 | args->data_count += len; | |||
1467 | lma += len; | |||
1468 | buffer += len; | |||
1469 | args->write_count += 1; | |||
1470 | sent += len; | |||
1471 | if (quit_flag | |||
1472 | || (deprecated_ui_load_progress_hook != NULL((void*)0) | |||
1473 | && deprecated_ui_load_progress_hook (sect_name, sent))) | |||
1474 | error ("Canceled the download"); | |||
1475 | ||||
1476 | if (deprecated_show_load_progress != NULL((void*)0)) | |||
1477 | deprecated_show_load_progress (sect_name, sent, size, | |||
1478 | args->data_count, | |||
1479 | args->total_size); | |||
1480 | } | |||
1481 | while (sent < size); | |||
1482 | ||||
1483 | if (err != 0) | |||
1484 | error ("Memory access error while loading section %s.", sect_name); | |||
1485 | ||||
1486 | do_cleanups (old_chain); | |||
1487 | } | |||
1488 | } | |||
1489 | } | |||
1490 | ||||
1491 | void | |||
1492 | generic_load (char *args, int from_tty) | |||
1493 | { | |||
1494 | asection *s; | |||
1495 | bfd *loadfile_bfd; | |||
1496 | time_t start_time, end_time; /* Start and end times of download */ | |||
1497 | char *filename; | |||
1498 | struct cleanup *old_cleanups; | |||
1499 | char *offptr; | |||
1500 | struct load_section_data cbdata; | |||
1501 | CORE_ADDR entry; | |||
1502 | ||||
1503 | cbdata.load_offset = 0; /* Offset to add to vma for each section. */ | |||
1504 | cbdata.write_count = 0; /* Number of writes needed. */ | |||
1505 | cbdata.data_count = 0; /* Number of bytes written to target memory. */ | |||
1506 | cbdata.total_size = 0; /* Total size of all bfd sectors. */ | |||
1507 | ||||
1508 | /* Parse the input argument - the user can specify a load offset as | |||
1509 | a second argument. */ | |||
1510 | filename = xmalloc (strlen (args) + 1); | |||
1511 | old_cleanups = make_cleanup (xfree, filename); | |||
1512 | strcpy (filename, args); | |||
1513 | offptr = strchr (filename, ' '); | |||
1514 | if (offptr != NULL((void*)0)) | |||
1515 | { | |||
1516 | char *endptr; | |||
1517 | ||||
1518 | cbdata.load_offset = strtoul (offptr, &endptr, 0); | |||
1519 | if (offptr == endptr) | |||
1520 | error ("Invalid download offset:%s\n", offptr); | |||
1521 | *offptr = '\0'; | |||
1522 | } | |||
1523 | else | |||
1524 | cbdata.load_offset = 0; | |||
1525 | ||||
1526 | /* Open the file for loading. */ | |||
1527 | loadfile_bfd = bfd_openr (filename, gnutarget); | |||
1528 | if (loadfile_bfd == NULL((void*)0)) | |||
1529 | { | |||
1530 | perror_with_name (filename); | |||
1531 | return; | |||
1532 | } | |||
1533 | ||||
1534 | /* FIXME: should be checking for errors from bfd_close (for one thing, | |||
1535 | on error it does not free all the storage associated with the | |||
1536 | bfd). */ | |||
1537 | make_cleanup_bfd_close (loadfile_bfd); | |||
1538 | ||||
1539 | if (!bfd_check_format (loadfile_bfd, bfd_object)) | |||
1540 | { | |||
1541 | error ("\"%s\" is not an object file: %s", filename, | |||
1542 | bfd_errmsg (bfd_get_error ())); | |||
1543 | } | |||
1544 | ||||
1545 | bfd_map_over_sections (loadfile_bfd, add_section_size_callback, | |||
1546 | (void *) &cbdata.total_size); | |||
1547 | ||||
1548 | start_time = time (NULL((void*)0)); | |||
1549 | ||||
1550 | bfd_map_over_sections (loadfile_bfd, load_section_callback, &cbdata); | |||
1551 | ||||
1552 | end_time = time (NULL((void*)0)); | |||
1553 | ||||
1554 | entry = bfd_get_start_address (loadfile_bfd)((loadfile_bfd)->start_address); | |||
1555 | ui_out_text (uiout, "Start address "); | |||
1556 | ui_out_field_fmt (uiout, "address", "0x%s", paddr_nz (entry)); | |||
1557 | ui_out_text (uiout, ", load size "); | |||
1558 | ui_out_field_fmt (uiout, "load-size", "%lu", cbdata.data_count); | |||
1559 | ui_out_text (uiout, "\n"); | |||
1560 | /* We were doing this in remote-mips.c, I suspect it is right | |||
1561 | for other targets too. */ | |||
1562 | write_pc (entry); | |||
1563 | ||||
1564 | /* FIXME: are we supposed to call symbol_file_add or not? According | |||
1565 | to a comment from remote-mips.c (where a call to symbol_file_add | |||
1566 | was commented out), making the call confuses GDB if more than one | |||
1567 | file is loaded in. Some targets do (e.g., remote-vx.c) but | |||
1568 | others don't (or didn't - perhaps they have all been deleted). */ | |||
1569 | ||||
1570 | print_transfer_performance (gdb_stdout, cbdata.data_count, | |||
1571 | cbdata.write_count, end_time - start_time); | |||
1572 | ||||
1573 | do_cleanups (old_cleanups); | |||
1574 | } | |||
1575 | ||||
1576 | /* Report how fast the transfer went. */ | |||
1577 | ||||
1578 | /* DEPRECATED: cagney/1999-10-18: report_transfer_performance is being | |||
1579 | replaced by print_transfer_performance (with a very different | |||
1580 | function signature). */ | |||
1581 | ||||
1582 | void | |||
1583 | report_transfer_performance (unsigned long data_count, time_t start_time, | |||
1584 | time_t end_time) | |||
1585 | { | |||
1586 | print_transfer_performance (gdb_stdout, data_count, | |||
1587 | end_time - start_time, 0); | |||
1588 | } | |||
1589 | ||||
1590 | void | |||
1591 | print_transfer_performance (struct ui_file *stream, | |||
1592 | unsigned long data_count, | |||
1593 | unsigned long write_count, | |||
1594 | unsigned long time_count) | |||
1595 | { | |||
1596 | ui_out_text (uiout, "Transfer rate: "); | |||
1597 | if (time_count > 0) | |||
1598 | { | |||
1599 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", | |||
1600 | (data_count * 8) / time_count); | |||
1601 | ui_out_text (uiout, " bits/sec"); | |||
1602 | } | |||
1603 | else | |||
1604 | { | |||
1605 | ui_out_field_fmt (uiout, "transferred-bits", "%lu", (data_count * 8)); | |||
1606 | ui_out_text (uiout, " bits in <1 sec"); | |||
1607 | } | |||
1608 | if (write_count > 0) | |||
1609 | { | |||
1610 | ui_out_text (uiout, ", "); | |||
1611 | ui_out_field_fmt (uiout, "write-rate", "%lu", data_count / write_count); | |||
1612 | ui_out_text (uiout, " bytes/write"); | |||
1613 | } | |||
1614 | ui_out_text (uiout, ".\n"); | |||
1615 | } | |||
1616 | ||||
1617 | /* This function allows the addition of incrementally linked object files. | |||
1618 | It does not modify any state in the target, only in the debugger. */ | |||
1619 | /* Note: ezannoni 2000-04-13 This function/command used to have a | |||
1620 | special case syntax for the rombug target (Rombug is the boot | |||
1621 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |||
1622 | rombug case, the user doesn't need to supply a text address, | |||
1623 | instead a call to target_link() (in target.c) would supply the | |||
1624 | value to use. We are now discontinuing this type of ad hoc syntax. */ | |||
1625 | ||||
1626 | static void | |||
1627 | add_symbol_file_command (char *args, int from_tty) | |||
1628 | { | |||
1629 | char *filename = NULL((void*)0); | |||
1630 | int flags = OBJF_USERLOADED(1 << 5); | |||
1631 | char *arg; | |||
1632 | int expecting_option = 0; | |||
1633 | int section_index = 0; | |||
1634 | int argcnt = 0; | |||
1635 | int sec_num = 0; | |||
1636 | int i; | |||
1637 | int expecting_sec_name = 0; | |||
1638 | int expecting_sec_addr = 0; | |||
1639 | ||||
1640 | struct sect_opt | |||
1641 | { | |||
1642 | char *name; | |||
1643 | char *value; | |||
1644 | }; | |||
1645 | ||||
1646 | struct section_addr_info *section_addrs; | |||
1647 | struct sect_opt *sect_opts = NULL((void*)0); | |||
1648 | size_t num_sect_opts = 0; | |||
1649 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL((void*)0)); | |||
1650 | ||||
1651 | num_sect_opts = 16; | |||
1652 | sect_opts = (struct sect_opt *) xmalloc (num_sect_opts | |||
1653 | * sizeof (struct sect_opt)); | |||
1654 | ||||
1655 | dont_repeat (); | |||
1656 | ||||
1657 | if (args == NULL((void*)0)) | |||
1658 | error ("add-symbol-file takes a file name and an address"); | |||
1659 | ||||
1660 | /* Make a copy of the string that we can safely write into. */ | |||
1661 | args = xstrdup (args); | |||
1662 | ||||
1663 | while (*args != '\000') | |||
1664 | { | |||
1665 | /* Any leading spaces? */ | |||
1666 | while (isspace (*args)) | |||
1667 | args++; | |||
1668 | ||||
1669 | /* Point arg to the beginning of the argument. */ | |||
1670 | arg = args; | |||
1671 | ||||
1672 | /* Move args pointer over the argument. */ | |||
1673 | while ((*args != '\000') && !isspace (*args)) | |||
1674 | args++; | |||
1675 | ||||
1676 | /* If there are more arguments, terminate arg and | |||
1677 | proceed past it. */ | |||
1678 | if (*args != '\000') | |||
1679 | *args++ = '\000'; | |||
1680 | ||||
1681 | /* Now process the argument. */ | |||
1682 | if (argcnt == 0) | |||
1683 | { | |||
1684 | /* The first argument is the file name. */ | |||
1685 | filename = tilde_expand (arg); | |||
1686 | make_cleanup (xfree, filename); | |||
1687 | } | |||
1688 | else | |||
1689 | if (argcnt == 1) | |||
1690 | { | |||
1691 | /* The second argument is always the text address at which | |||
1692 | to load the program. */ | |||
1693 | sect_opts[section_index].name = ".text"; | |||
1694 | sect_opts[section_index].value = arg; | |||
1695 | if (++section_index > num_sect_opts) | |||
1696 | { | |||
1697 | num_sect_opts *= 2; | |||
1698 | sect_opts = ((struct sect_opt *) | |||
1699 | xrealloc (sect_opts, | |||
1700 | num_sect_opts | |||
1701 | * sizeof (struct sect_opt))); | |||
1702 | } | |||
1703 | } | |||
1704 | else | |||
1705 | { | |||
1706 | /* It's an option (starting with '-') or it's an argument | |||
1707 | to an option */ | |||
1708 | ||||
1709 | if (*arg == '-') | |||
1710 | { | |||
1711 | if (strcmp (arg, "-readnow") == 0) | |||
1712 | flags |= OBJF_READNOW(1 << 4); | |||
1713 | else if (strcmp (arg, "-s") == 0) | |||
1714 | { | |||
1715 | expecting_sec_name = 1; | |||
1716 | expecting_sec_addr = 1; | |||
1717 | } | |||
1718 | } | |||
1719 | else | |||
1720 | { | |||
1721 | if (expecting_sec_name) | |||
1722 | { | |||
1723 | sect_opts[section_index].name = arg; | |||
1724 | expecting_sec_name = 0; | |||
1725 | } | |||
1726 | else | |||
1727 | if (expecting_sec_addr) | |||
1728 | { | |||
1729 | sect_opts[section_index].value = arg; | |||
1730 | expecting_sec_addr = 0; | |||
1731 | if (++section_index > num_sect_opts) | |||
1732 | { | |||
1733 | num_sect_opts *= 2; | |||
1734 | sect_opts = ((struct sect_opt *) | |||
1735 | xrealloc (sect_opts, | |||
1736 | num_sect_opts | |||
1737 | * sizeof (struct sect_opt))); | |||
1738 | } | |||
1739 | } | |||
1740 | else | |||
1741 | error ("USAGE: add-symbol-file <filename> <textaddress> [-mapped] [-readnow] [-s <secname> <addr>]*"); | |||
1742 | } | |||
1743 | } | |||
1744 | argcnt++; | |||
1745 | } | |||
1746 | ||||
1747 | /* Print the prompt for the query below. And save the arguments into | |||
1748 | a sect_addr_info structure to be passed around to other | |||
1749 | functions. We have to split this up into separate print | |||
1750 | statements because hex_string returns a local static | |||
1751 | string. */ | |||
1752 | ||||
1753 | printf_unfiltered ("add symbol table from file \"%s\" at\n", filename); | |||
1754 | section_addrs = alloc_section_addr_info (section_index); | |||
1755 | make_cleanup (xfree, section_addrs); | |||
1756 | for (i = 0; i < section_index; i++) | |||
1757 | { | |||
1758 | CORE_ADDR addr; | |||
1759 | char *val = sect_opts[i].value; | |||
1760 | char *sec = sect_opts[i].name; | |||
1761 | ||||
1762 | addr = parse_and_eval_address (val); | |||
1763 | ||||
1764 | /* Here we store the section offsets in the order they were | |||
1765 | entered on the command line. */ | |||
1766 | section_addrs->other[sec_num].name = sec; | |||
1767 | section_addrs->other[sec_num].addr = addr; | |||
1768 | printf_unfiltered ("\t%s_addr = %s\n", | |||
1769 | sec, hex_string ((unsigned long)addr)); | |||
1770 | sec_num++; | |||
1771 | ||||
1772 | /* The object's sections are initialized when a | |||
1773 | call is made to build_objfile_section_table (objfile). | |||
1774 | This happens in reread_symbols. | |||
1775 | At this point, we don't know what file type this is, | |||
1776 | so we can't determine what section names are valid. */ | |||
1777 | } | |||
1778 | ||||
1779 | if (from_tty && (!query ("%s", ""))) | |||
1780 | error ("Not confirmed."); | |||
1781 | ||||
1782 | symbol_file_add (filename, from_tty, section_addrs, 0, flags); | |||
1783 | ||||
1784 | /* Getting new symbols may change our opinion about what is | |||
1785 | frameless. */ | |||
1786 | reinit_frame_cache (); | |||
1787 | do_cleanups (my_cleanups); | |||
1788 | } | |||
1789 | ||||
1790 | static void | |||
1791 | add_shared_symbol_files_command (char *args, int from_tty) | |||
1792 | { | |||
1793 | #ifdef ADD_SHARED_SYMBOL_FILES | |||
1794 | ADD_SHARED_SYMBOL_FILES (args, from_tty); | |||
1795 | #else | |||
1796 | error ("This command is not available in this configuration of GDB."); | |||
1797 | #endif | |||
1798 | } | |||
1799 | ||||
1800 | /* Re-read symbols if a symbol-file has changed. */ | |||
1801 | void | |||
1802 | reread_symbols (void) | |||
1803 | { | |||
1804 | struct objfile *objfile; | |||
1805 | time_t new_modtime; | |||
1806 | int reread_one = 0; | |||
1807 | struct stat new_statbuf; | |||
1808 | int res; | |||
1809 | ||||
1810 | /* With the addition of shared libraries, this should be modified, | |||
1811 | the load time should be saved in the partial symbol tables, since | |||
1812 | different tables may come from different source files. FIXME. | |||
1813 | This routine should then walk down each partial symbol table | |||
1814 | and see if the symbol table that it originates from has been changed */ | |||
1815 | ||||
1816 | for (objfile = object_files; objfile; objfile = objfile->next) | |||
1817 | { | |||
1818 | if (objfile->obfd) | |||
1819 | { | |||
1820 | #ifdef DEPRECATED_IBM6000_TARGET | |||
1821 | /* If this object is from a shared library, then you should | |||
1822 | stat on the library name, not member name. */ | |||
1823 | ||||
1824 | if (objfile->obfd->my_archive) | |||
1825 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |||
1826 | else | |||
1827 | #endif | |||
1828 | res = stat (objfile->name, &new_statbuf); | |||
1829 | if (res != 0) | |||
1830 | { | |||
1831 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ | |||
1832 | printf_unfiltered ("`%s' has disappeared; keeping its symbols.\n", | |||
1833 | objfile->name); | |||
1834 | continue; | |||
1835 | } | |||
1836 | new_modtime = new_statbuf.st_mtimest_mtim.tv_sec; | |||
1837 | if (new_modtime != objfile->mtime) | |||
1838 | { | |||
1839 | struct cleanup *old_cleanups; | |||
1840 | struct section_offsets *offsets; | |||
1841 | int num_offsets; | |||
1842 | char *obfd_filename; | |||
1843 | ||||
1844 | printf_unfiltered ("`%s' has changed; re-reading symbols.\n", | |||
1845 | objfile->name); | |||
1846 | ||||
1847 | /* There are various functions like symbol_file_add, | |||
1848 | symfile_bfd_open, syms_from_objfile, etc., which might | |||
1849 | appear to do what we want. But they have various other | |||
1850 | effects which we *don't* want. So we just do stuff | |||
1851 | ourselves. We don't worry about mapped files (for one thing, | |||
1852 | any mapped file will be out of date). */ | |||
1853 | ||||
1854 | /* If we get an error, blow away this objfile (not sure if | |||
1855 | that is the correct response for things like shared | |||
1856 | libraries). */ | |||
1857 | old_cleanups = make_cleanup_free_objfile (objfile); | |||
1858 | /* We need to do this whenever any symbols go away. */ | |||
1859 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); | |||
1860 | ||||
1861 | /* Clean up any state BFD has sitting around. We don't need | |||
1862 | to close the descriptor but BFD lacks a way of closing the | |||
1863 | BFD without closing the descriptor. */ | |||
1864 | obfd_filename = bfd_get_filename (objfile->obfd)((char *) (objfile->obfd)->filename); | |||
1865 | if (!bfd_close (objfile->obfd)) | |||
1866 | error ("Can't close BFD for %s: %s", objfile->name, | |||
1867 | bfd_errmsg (bfd_get_error ())); | |||
1868 | objfile->obfd = bfd_openr (obfd_filename, gnutarget); | |||
1869 | if (objfile->obfd == NULL((void*)0)) | |||
1870 | error ("Can't open %s to read symbols.", objfile->name); | |||
1871 | /* bfd_openr sets cacheable to true, which is what we want. */ | |||
1872 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |||
1873 | error ("Can't read symbols from %s: %s.", objfile->name, | |||
1874 | bfd_errmsg (bfd_get_error ())); | |||
1875 | ||||
1876 | /* Save the offsets, we will nuke them with the rest of the | |||
1877 | objfile_obstack. */ | |||
1878 | num_offsets = objfile->num_sections; | |||
1879 | offsets = ((struct section_offsets *) | |||
1880 | alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))__builtin_alloca((sizeof (struct section_offsets) + sizeof (( (struct section_offsets *) 0)->offsets) * ((num_offsets)-1 )))); | |||
1881 | memcpy (offsets, objfile->section_offsets, | |||
1882 | SIZEOF_N_SECTION_OFFSETS (num_offsets)(sizeof (struct section_offsets) + sizeof (((struct section_offsets *) 0)->offsets) * ((num_offsets)-1))); | |||
1883 | ||||
1884 | /* Nuke all the state that we will re-read. Much of the following | |||
1885 | code which sets things to NULL really is necessary to tell | |||
1886 | other parts of GDB that there is nothing currently there. */ | |||
1887 | ||||
1888 | /* FIXME: Do we have to free a whole linked list, or is this | |||
1889 | enough? */ | |||
1890 | if (objfile->global_psymbols.list) | |||
1891 | xfree (objfile->global_psymbols.list); | |||
1892 | memset (&objfile->global_psymbols, 0, | |||
1893 | sizeof (objfile->global_psymbols)); | |||
1894 | if (objfile->static_psymbols.list) | |||
1895 | xfree (objfile->static_psymbols.list); | |||
1896 | memset (&objfile->static_psymbols, 0, | |||
1897 | sizeof (objfile->static_psymbols)); | |||
1898 | ||||
1899 | /* Free the obstacks for non-reusable objfiles */ | |||
1900 | bcache_xfree (objfile->psymbol_cache); | |||
1901 | objfile->psymbol_cache = bcache_xmalloc (); | |||
1902 | bcache_xfree (objfile->macro_cache); | |||
1903 | objfile->macro_cache = bcache_xmalloc (); | |||
1904 | if (objfile->demangled_names_hash != NULL((void*)0)) | |||
1905 | { | |||
1906 | htab_delete (objfile->demangled_names_hash); | |||
1907 | objfile->demangled_names_hash = NULL((void*)0); | |||
1908 | } | |||
1909 | obstack_free (&objfile->objfile_obstack, 0)__extension__ ({ struct obstack *__o = (&objfile->objfile_obstack ); void *__obj = (0); if (__obj > (void *)__o->chunk && __obj < (void *)__o->chunk_limit) __o->next_free = __o ->object_base = __obj; else (obstack_free) (__o, __obj); } ); | |||
1910 | objfile->sections = NULL((void*)0); | |||
1911 | objfile->symtabs = NULL((void*)0); | |||
1912 | objfile->psymtabs = NULL((void*)0); | |||
1913 | objfile->free_psymtabs = NULL((void*)0); | |||
1914 | objfile->cp_namespace_symtab = NULL((void*)0); | |||
1915 | objfile->msymbols = NULL((void*)0); | |||
1916 | objfile->sym_private = NULL((void*)0); | |||
1917 | objfile->minimal_symbol_count = 0; | |||
1918 | memset (&objfile->msymbol_hash, 0, | |||
1919 | sizeof (objfile->msymbol_hash)); | |||
1920 | memset (&objfile->msymbol_demangled_hash, 0, | |||
1921 | sizeof (objfile->msymbol_demangled_hash)); | |||
1922 | objfile->fundamental_types = NULL((void*)0); | |||
1923 | clear_objfile_data (objfile); | |||
1924 | if (objfile->sf != NULL((void*)0)) | |||
1925 | { | |||
1926 | (*objfile->sf->sym_finish) (objfile); | |||
1927 | } | |||
1928 | ||||
1929 | /* We never make this a mapped file. */ | |||
1930 | objfile->md = NULL((void*)0); | |||
1931 | objfile->psymbol_cache = bcache_xmalloc (); | |||
1932 | objfile->macro_cache = bcache_xmalloc (); | |||
1933 | /* obstack_init also initializes the obstack so it is | |||
1934 | empty. We could use obstack_specify_allocation but | |||
1935 | gdb_obstack.h specifies the alloc/dealloc | |||
1936 | functions. */ | |||
1937 | obstack_init (&objfile->objfile_obstack)_obstack_begin ((&objfile->objfile_obstack), 0, 0, (void *(*) (long)) xmalloc, (void (*) (void *)) xfree); | |||
1938 | if (build_objfile_section_table (objfile)) | |||
1939 | { | |||
1940 | error ("Can't find the file sections in `%s': %s", | |||
1941 | objfile->name, bfd_errmsg (bfd_get_error ())); | |||
1942 | } | |||
1943 | terminate_minimal_symbol_table (objfile); | |||
1944 | ||||
1945 | /* We use the same section offsets as from last time. I'm not | |||
1946 | sure whether that is always correct for shared libraries. */ | |||
1947 | objfile->section_offsets = (struct section_offsets *) | |||
1948 | obstack_alloc (&objfile->objfile_obstack,__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( ((sizeof (struct section_offsets) + sizeof (((struct section_offsets *) 0)->offsets) * ((num_offsets)-1)))); if (__o->chunk_limit - __o->next_free < __len) _obstack_newchunk (__o, __len ); ((__o)->next_free += (__len)); (void) 0; }); __extension__ ({ struct obstack *__o1 = (__h); void *value; value = (void * ) __o1->object_base; if (__o1->next_free == value) __o1 ->maybe_empty_object = 1; __o1->next_free = (((((__o1-> next_free) - (char *) 0)+__o1->alignment_mask) & ~ (__o1 ->alignment_mask)) + (char *) 0); if (__o1->next_free - (char *)__o1->chunk > __o1->chunk_limit - (char *)__o1 ->chunk) __o1->next_free = __o1->chunk_limit; __o1-> object_base = __o1->next_free; value; }); }) | |||
1949 | SIZEOF_N_SECTION_OFFSETS (num_offsets))__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( ((sizeof (struct section_offsets) + sizeof (((struct section_offsets *) 0)->offsets) * ((num_offsets)-1)))); if (__o->chunk_limit - __o->next_free < __len) _obstack_newchunk (__o, __len ); ((__o)->next_free += (__len)); (void) 0; }); __extension__ ({ struct obstack *__o1 = (__h); void *value; value = (void * ) __o1->object_base; if (__o1->next_free == value) __o1 ->maybe_empty_object = 1; __o1->next_free = (((((__o1-> next_free) - (char *) 0)+__o1->alignment_mask) & ~ (__o1 ->alignment_mask)) + (char *) 0); if (__o1->next_free - (char *)__o1->chunk > __o1->chunk_limit - (char *)__o1 ->chunk) __o1->next_free = __o1->chunk_limit; __o1-> object_base = __o1->next_free; value; }); }); | |||
1950 | memcpy (objfile->section_offsets, offsets, | |||
1951 | SIZEOF_N_SECTION_OFFSETS (num_offsets)(sizeof (struct section_offsets) + sizeof (((struct section_offsets *) 0)->offsets) * ((num_offsets)-1))); | |||
1952 | objfile->num_sections = num_offsets; | |||
1953 | ||||
1954 | /* What the hell is sym_new_init for, anyway? The concept of | |||
1955 | distinguishing between the main file and additional files | |||
1956 | in this way seems rather dubious. */ | |||
1957 | if (objfile == symfile_objfile) | |||
1958 | { | |||
1959 | (*objfile->sf->sym_new_init) (objfile); | |||
1960 | } | |||
1961 | ||||
1962 | (*objfile->sf->sym_init) (objfile); | |||
1963 | clear_complaints (&symfile_complaints, 1, 1); | |||
1964 | /* The "mainline" parameter is a hideous hack; I think leaving it | |||
1965 | zero is OK since dbxread.c also does what it needs to do if | |||
1966 | objfile->global_psymbols.size is 0. */ | |||
1967 | (*objfile->sf->sym_read) (objfile, 0); | |||
1968 | if (!have_partial_symbols () && !have_full_symbols ()) | |||
1969 | { | |||
1970 | wrap_here (""); | |||
1971 | printf_unfiltered ("(no debugging symbols found)\n"); | |||
1972 | wrap_here (""); | |||
1973 | } | |||
1974 | objfile->flags |= OBJF_SYMS(1 << 1); | |||
1975 | ||||
1976 | /* We're done reading the symbol file; finish off complaints. */ | |||
1977 | clear_complaints (&symfile_complaints, 0, 1); | |||
1978 | ||||
1979 | /* Getting new symbols may change our opinion about what is | |||
1980 | frameless. */ | |||
1981 | ||||
1982 | reinit_frame_cache (); | |||
1983 | ||||
1984 | /* Discard cleanups as symbol reading was successful. */ | |||
1985 | discard_cleanups (old_cleanups); | |||
1986 | ||||
1987 | init_entry_point_info (objfile); | |||
1988 | ||||
1989 | /* If the mtime has changed between the time we set new_modtime | |||
1990 | and now, we *want* this to be out of date, so don't call stat | |||
1991 | again now. */ | |||
1992 | objfile->mtime = new_modtime; | |||
1993 | reread_one = 1; | |||
1994 | reread_separate_symbols (objfile); | |||
1995 | } | |||
1996 | } | |||
1997 | } | |||
1998 | ||||
1999 | if (reread_one) | |||
2000 | clear_symtab_users (); | |||
2001 | } | |||
2002 | ||||
2003 | ||||
2004 | /* Handle separate debug info for OBJFILE, which has just been | |||
2005 | re-read: | |||
2006 | - If we had separate debug info before, but now we don't, get rid | |||
2007 | of the separated objfile. | |||
2008 | - If we didn't have separated debug info before, but now we do, | |||
2009 | read in the new separated debug info file. | |||
2010 | - If the debug link points to a different file, toss the old one | |||
2011 | and read the new one. | |||
2012 | This function does *not* handle the case where objfile is still | |||
2013 | using the same separate debug info file, but that file's timestamp | |||
2014 | has changed. That case should be handled by the loop in | |||
2015 | reread_symbols already. */ | |||
2016 | static void | |||
2017 | reread_separate_symbols (struct objfile *objfile) | |||
2018 | { | |||
2019 | char *debug_file; | |||
2020 | unsigned long crc32; | |||
2021 | ||||
2022 | /* Does the updated objfile's debug info live in a | |||
2023 | separate file? */ | |||
2024 | debug_file = find_separate_debug_file (objfile); | |||
2025 | ||||
2026 | if (objfile->separate_debug_objfile) | |||
2027 | { | |||
2028 | /* There are two cases where we need to get rid of | |||
2029 | the old separated debug info objfile: | |||
2030 | - if the new primary objfile doesn't have | |||
2031 | separated debug info, or | |||
2032 | - if the new primary objfile has separate debug | |||
2033 | info, but it's under a different filename. | |||
2034 | ||||
2035 | If the old and new objfiles both have separate | |||
2036 | debug info, under the same filename, then we're | |||
2037 | okay --- if the separated file's contents have | |||
2038 | changed, we will have caught that when we | |||
2039 | visited it in this function's outermost | |||
2040 | loop. */ | |||
2041 | if (! debug_file | |||
2042 | || strcmp (debug_file, objfile->separate_debug_objfile->name) != 0) | |||
2043 | free_objfile (objfile->separate_debug_objfile); | |||
2044 | } | |||
2045 | ||||
2046 | /* If the new objfile has separate debug info, and we | |||
2047 | haven't loaded it already, do so now. */ | |||
2048 | if (debug_file | |||
2049 | && ! objfile->separate_debug_objfile) | |||
2050 | { | |||
2051 | /* Use the same section offset table as objfile itself. | |||
2052 | Preserve the flags from objfile that make sense. */ | |||
2053 | objfile->separate_debug_objfile | |||
2054 | = (symbol_file_add_with_addrs_or_offsets | |||
2055 | (symfile_bfd_open (debug_file), | |||
2056 | info_verbose, /* from_tty: Don't override the default. */ | |||
2057 | 0, /* No addr table. */ | |||
2058 | objfile->section_offsets, objfile->num_sections, | |||
2059 | 0, /* Not mainline. See comments about this above. */ | |||
2060 | objfile->flags & (OBJF_REORDERED(1 << 2) | OBJF_SHARED(1 << 3) | OBJF_READNOW(1 << 4) | |||
2061 | | OBJF_USERLOADED(1 << 5)))); | |||
2062 | objfile->separate_debug_objfile->separate_debug_objfile_backlink | |||
2063 | = objfile; | |||
2064 | } | |||
2065 | } | |||
2066 | ||||
2067 | ||||
2068 | ||||
2069 | ||||
2070 | ||||
2071 | typedef struct | |||
2072 | { | |||
2073 | char *ext; | |||
2074 | enum language lang; | |||
2075 | } | |||
2076 | filename_language; | |||
2077 | ||||
2078 | static filename_language *filename_language_table; | |||
2079 | static int fl_table_size, fl_table_next; | |||
2080 | ||||
2081 | static void | |||
2082 | add_filename_language (char *ext, enum language lang) | |||
2083 | { | |||
2084 | if (fl_table_next >= fl_table_size) | |||
2085 | { | |||
2086 | fl_table_size += 10; | |||
2087 | filename_language_table = | |||
2088 | xrealloc (filename_language_table, | |||
2089 | fl_table_size * sizeof (*filename_language_table)); | |||
2090 | } | |||
2091 | ||||
2092 | filename_language_table[fl_table_next].ext = xstrdup (ext); | |||
2093 | filename_language_table[fl_table_next].lang = lang; | |||
2094 | fl_table_next++; | |||
2095 | } | |||
2096 | ||||
2097 | static char *ext_args; | |||
2098 | ||||
2099 | static void | |||
2100 | set_ext_lang_command (char *args, int from_tty) | |||
2101 | { | |||
2102 | int i; | |||
2103 | char *cp = ext_args; | |||
2104 | enum language lang; | |||
2105 | ||||
2106 | /* First arg is filename extension, starting with '.' */ | |||
2107 | if (*cp != '.') | |||
2108 | error ("'%s': Filename extension must begin with '.'", ext_args); | |||
2109 | ||||
2110 | /* Find end of first arg. */ | |||
2111 | while (*cp && !isspace (*cp)) | |||
2112 | cp++; | |||
2113 | ||||
2114 | if (*cp == '\0') | |||
2115 | error ("'%s': two arguments required -- filename extension and language", | |||
2116 | ext_args); | |||
2117 | ||||
2118 | /* Null-terminate first arg */ | |||
2119 | *cp++ = '\0'; | |||
2120 | ||||
2121 | /* Find beginning of second arg, which should be a source language. */ | |||
2122 | while (*cp && isspace (*cp)) | |||
2123 | cp++; | |||
2124 | ||||
2125 | if (*cp == '\0') | |||
2126 | error ("'%s': two arguments required -- filename extension and language", | |||
2127 | ext_args); | |||
2128 | ||||
2129 | /* Lookup the language from among those we know. */ | |||
2130 | lang = language_enum (cp); | |||
2131 | ||||
2132 | /* Now lookup the filename extension: do we already know it? */ | |||
2133 | for (i = 0; i < fl_table_next; i++) | |||
2134 | if (0 == strcmp (ext_args, filename_language_table[i].ext)) | |||
2135 | break; | |||
2136 | ||||
2137 | if (i >= fl_table_next) | |||
2138 | { | |||
2139 | /* new file extension */ | |||
2140 | add_filename_language (ext_args, lang); | |||
2141 | } | |||
2142 | else | |||
2143 | { | |||
2144 | /* redefining a previously known filename extension */ | |||
2145 | ||||
2146 | /* if (from_tty) */ | |||
2147 | /* query ("Really make files of type %s '%s'?", */ | |||
2148 | /* ext_args, language_str (lang)); */ | |||
2149 | ||||
2150 | xfree (filename_language_table[i].ext); | |||
2151 | filename_language_table[i].ext = xstrdup (ext_args); | |||
2152 | filename_language_table[i].lang = lang; | |||
2153 | } | |||
2154 | } | |||
2155 | ||||
2156 | static void | |||
2157 | info_ext_lang_command (char *args, int from_tty) | |||
2158 | { | |||
2159 | int i; | |||
2160 | ||||
2161 | printf_filtered ("Filename extensions and the languages they represent:"); | |||
2162 | printf_filtered ("\n\n"); | |||
2163 | for (i = 0; i < fl_table_next; i++) | |||
2164 | printf_filtered ("\t%s\t- %s\n", | |||
2165 | filename_language_table[i].ext, | |||
2166 | language_str (filename_language_table[i].lang)); | |||
2167 | } | |||
2168 | ||||
2169 | static void | |||
2170 | init_filename_language_table (void) | |||
2171 | { | |||
2172 | if (fl_table_size == 0) /* protect against repetition */ | |||
2173 | { | |||
2174 | fl_table_size = 20; | |||
2175 | fl_table_next = 0; | |||
2176 | filename_language_table = | |||
2177 | xmalloc (fl_table_size * sizeof (*filename_language_table)); | |||
2178 | add_filename_language (".c", language_c); | |||
2179 | add_filename_language (".C", language_cplus); | |||
2180 | add_filename_language (".cc", language_cplus); | |||
2181 | add_filename_language (".cp", language_cplus); | |||
2182 | add_filename_language (".cpp", language_cplus); | |||
2183 | add_filename_language (".cxx", language_cplus); | |||
2184 | add_filename_language (".c++", language_cplus); | |||
2185 | add_filename_language (".java", language_java); | |||
2186 | add_filename_language (".class", language_java); | |||
2187 | add_filename_language (".m", language_objc); | |||
2188 | add_filename_language (".f", language_fortran); | |||
2189 | add_filename_language (".F", language_fortran); | |||
2190 | add_filename_language (".s", language_asm); | |||
2191 | add_filename_language (".S", language_asm); | |||
2192 | add_filename_language (".pas", language_pascal); | |||
2193 | add_filename_language (".p", language_pascal); | |||
2194 | add_filename_language (".pp", language_pascal); | |||
2195 | add_filename_language (".adb", language_ada); | |||
2196 | add_filename_language (".ads", language_ada); | |||
2197 | add_filename_language (".a", language_ada); | |||
2198 | add_filename_language (".ada", language_ada); | |||
2199 | } | |||
2200 | } | |||
2201 | ||||
2202 | enum language | |||
2203 | deduce_language_from_filename (char *filename) | |||
2204 | { | |||
2205 | int i; | |||
2206 | char *cp; | |||
2207 | ||||
2208 | if (filename != NULL((void*)0)) | |||
2209 | if ((cp = strrchr (filename, '.')) != NULL((void*)0)) | |||
2210 | for (i = 0; i < fl_table_next; i++) | |||
2211 | if (strcmp (cp, filename_language_table[i].ext) == 0) | |||
2212 | return filename_language_table[i].lang; | |||
2213 | ||||
2214 | return language_unknown; | |||
2215 | } | |||
2216 | ||||
2217 | /* allocate_symtab: | |||
2218 | ||||
2219 | Allocate and partly initialize a new symbol table. Return a pointer | |||
2220 | to it. error() if no space. | |||
2221 | ||||
2222 | Caller must set these fields: | |||
2223 | LINETABLE(symtab) | |||
2224 | symtab->blockvector | |||
2225 | symtab->dirname | |||
2226 | symtab->free_code | |||
2227 | symtab->free_ptr | |||
2228 | possibly free_named_symtabs (symtab->filename); | |||
2229 | */ | |||
2230 | ||||
2231 | struct symtab * | |||
2232 | allocate_symtab (char *filename, struct objfile *objfile) | |||
2233 | { | |||
2234 | struct symtab *symtab; | |||
2235 | ||||
2236 | symtab = (struct symtab *) | |||
2237 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symtab))__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( (sizeof (struct symtab))); if (__o->chunk_limit - __o-> next_free < __len) _obstack_newchunk (__o, __len); ((__o)-> next_free += (__len)); (void) 0; }); __extension__ ({ struct obstack *__o1 = (__h); void *value; value = (void *) __o1->object_base ; if (__o1->next_free == value) __o1->maybe_empty_object = 1; __o1->next_free = (((((__o1->next_free) - (char * ) 0)+__o1->alignment_mask) & ~ (__o1->alignment_mask )) + (char *) 0); if (__o1->next_free - (char *)__o1->chunk > __o1->chunk_limit - (char *)__o1->chunk) __o1-> next_free = __o1->chunk_limit; __o1->object_base = __o1 ->next_free; value; }); }); | |||
2238 | memset (symtab, 0, sizeof (*symtab)); | |||
2239 | symtab->filename = obsavestring (filename, strlen (filename), | |||
2240 | &objfile->objfile_obstack); | |||
2241 | symtab->fullname = NULL((void*)0); | |||
2242 | symtab->language = deduce_language_from_filename (filename); | |||
2243 | symtab->debugformat = obsavestring ("unknown", 7, | |||
2244 | &objfile->objfile_obstack); | |||
2245 | ||||
2246 | /* Hook it to the objfile it comes from */ | |||
2247 | ||||
2248 | symtab->objfile = objfile; | |||
2249 | symtab->next = objfile->symtabs; | |||
2250 | objfile->symtabs = symtab; | |||
2251 | ||||
2252 | /* FIXME: This should go away. It is only defined for the Z8000, | |||
2253 | and the Z8000 definition of this macro doesn't have anything to | |||
2254 | do with the now-nonexistent EXTRA_SYMTAB_INFO macro, it's just | |||
2255 | here for convenience. */ | |||
2256 | #ifdef INIT_EXTRA_SYMTAB_INFO | |||
2257 | INIT_EXTRA_SYMTAB_INFO (symtab); | |||
2258 | #endif | |||
2259 | ||||
2260 | return (symtab); | |||
2261 | } | |||
2262 | ||||
2263 | struct partial_symtab * | |||
2264 | allocate_psymtab (char *filename, struct objfile *objfile) | |||
2265 | { | |||
2266 | struct partial_symtab *psymtab; | |||
2267 | ||||
2268 | if (objfile->free_psymtabs) | |||
2269 | { | |||
2270 | psymtab = objfile->free_psymtabs; | |||
2271 | objfile->free_psymtabs = psymtab->next; | |||
2272 | } | |||
2273 | else | |||
2274 | psymtab = (struct partial_symtab *) | |||
2275 | obstack_alloc (&objfile->objfile_obstack,__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( (sizeof (struct partial_symtab))); if (__o->chunk_limit - __o ->next_free < __len) _obstack_newchunk (__o, __len); (( __o)->next_free += (__len)); (void) 0; }); __extension__ ( { struct obstack *__o1 = (__h); void *value; value = (void *) __o1->object_base; if (__o1->next_free == value) __o1-> maybe_empty_object = 1; __o1->next_free = (((((__o1->next_free ) - (char *) 0)+__o1->alignment_mask) & ~ (__o1->alignment_mask )) + (char *) 0); if (__o1->next_free - (char *)__o1->chunk > __o1->chunk_limit - (char *)__o1->chunk) __o1-> next_free = __o1->chunk_limit; __o1->object_base = __o1 ->next_free; value; }); }) | |||
2276 | sizeof (struct partial_symtab))__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( (sizeof (struct partial_symtab))); if (__o->chunk_limit - __o ->next_free < __len) _obstack_newchunk (__o, __len); (( __o)->next_free += (__len)); (void) 0; }); __extension__ ( { struct obstack *__o1 = (__h); void *value; value = (void *) __o1->object_base; if (__o1->next_free == value) __o1-> maybe_empty_object = 1; __o1->next_free = (((((__o1->next_free ) - (char *) 0)+__o1->alignment_mask) & ~ (__o1->alignment_mask )) + (char *) 0); if (__o1->next_free - (char *)__o1->chunk > __o1->chunk_limit - (char *)__o1->chunk) __o1-> next_free = __o1->chunk_limit; __o1->object_base = __o1 ->next_free; value; }); }); | |||
2277 | ||||
2278 | memset (psymtab, 0, sizeof (struct partial_symtab)); | |||
2279 | psymtab->filename = obsavestring (filename, strlen (filename), | |||
2280 | &objfile->objfile_obstack); | |||
2281 | psymtab->symtab = NULL((void*)0); | |||
2282 | ||||
2283 | /* Prepend it to the psymtab list for the objfile it belongs to. | |||
2284 | Psymtabs are searched in most recent inserted -> least recent | |||
2285 | inserted order. */ | |||
2286 | ||||
2287 | psymtab->objfile = objfile; | |||
2288 | psymtab->next = objfile->psymtabs; | |||
2289 | objfile->psymtabs = psymtab; | |||
2290 | #if 0 | |||
2291 | { | |||
2292 | struct partial_symtab **prev_pst; | |||
2293 | psymtab->objfile = objfile; | |||
2294 | psymtab->next = NULL((void*)0); | |||
2295 | prev_pst = &(objfile->psymtabs); | |||
2296 | while ((*prev_pst) != NULL((void*)0)) | |||
2297 | prev_pst = &((*prev_pst)->next); | |||
2298 | (*prev_pst) = psymtab; | |||
2299 | } | |||
2300 | #endif | |||
2301 | ||||
2302 | return (psymtab); | |||
2303 | } | |||
2304 | ||||
2305 | void | |||
2306 | discard_psymtab (struct partial_symtab *pst) | |||
2307 | { | |||
2308 | struct partial_symtab **prev_pst; | |||
2309 | ||||
2310 | /* From dbxread.c: | |||
2311 | Empty psymtabs happen as a result of header files which don't | |||
2312 | have any symbols in them. There can be a lot of them. But this | |||
2313 | check is wrong, in that a psymtab with N_SLINE entries but | |||
2314 | nothing else is not empty, but we don't realize that. Fixing | |||
2315 | that without slowing things down might be tricky. */ | |||
2316 | ||||
2317 | /* First, snip it out of the psymtab chain */ | |||
2318 | ||||
2319 | prev_pst = &(pst->objfile->psymtabs); | |||
2320 | while ((*prev_pst) != pst) | |||
2321 | prev_pst = &((*prev_pst)->next); | |||
2322 | (*prev_pst) = pst->next; | |||
2323 | ||||
2324 | /* Next, put it on a free list for recycling */ | |||
2325 | ||||
2326 | pst->next = pst->objfile->free_psymtabs; | |||
2327 | pst->objfile->free_psymtabs = pst; | |||
2328 | } | |||
2329 | ||||
2330 | ||||
2331 | /* Reset all data structures in gdb which may contain references to symbol | |||
2332 | table data. */ | |||
2333 | ||||
2334 | void | |||
2335 | clear_symtab_users (void) | |||
2336 | { | |||
2337 | /* Someday, we should do better than this, by only blowing away | |||
2338 | the things that really need to be blown. */ | |||
2339 | clear_value_history (); | |||
2340 | clear_displays (); | |||
2341 | clear_internalvars (); | |||
2342 | breakpoint_re_set (); | |||
2343 | set_default_breakpoint (0, 0, 0, 0); | |||
2344 | clear_current_source_symtab_and_line (); | |||
2345 | clear_pc_function_cache (); | |||
2346 | if (deprecated_target_new_objfile_hook) | |||
2347 | deprecated_target_new_objfile_hook (NULL((void*)0)); | |||
2348 | varobj_refresh (); | |||
2349 | } | |||
2350 | ||||
2351 | static void | |||
2352 | clear_symtab_users_cleanup (void *ignore) | |||
2353 | { | |||
2354 | clear_symtab_users (); | |||
2355 | } | |||
2356 | ||||
2357 | /* clear_symtab_users_once: | |||
2358 | ||||
2359 | This function is run after symbol reading, or from a cleanup. | |||
2360 | If an old symbol table was obsoleted, the old symbol table | |||
2361 | has been blown away, but the other GDB data structures that may | |||
2362 | reference it have not yet been cleared or re-directed. (The old | |||
2363 | symtab was zapped, and the cleanup queued, in free_named_symtab() | |||
2364 | below.) | |||
2365 | ||||
2366 | This function can be queued N times as a cleanup, or called | |||
2367 | directly; it will do all the work the first time, and then will be a | |||
2368 | no-op until the next time it is queued. This works by bumping a | |||
2369 | counter at queueing time. Much later when the cleanup is run, or at | |||
2370 | the end of symbol processing (in case the cleanup is discarded), if | |||
2371 | the queued count is greater than the "done-count", we do the work | |||
2372 | and set the done-count to the queued count. If the queued count is | |||
2373 | less than or equal to the done-count, we just ignore the call. This | |||
2374 | is needed because reading a single .o file will often replace many | |||
2375 | symtabs (one per .h file, for example), and we don't want to reset | |||
2376 | the breakpoints N times in the user's face. | |||
2377 | ||||
2378 | The reason we both queue a cleanup, and call it directly after symbol | |||
2379 | reading, is because the cleanup protects us in case of errors, but is | |||
2380 | discarded if symbol reading is successful. */ | |||
2381 | ||||
2382 | #if 0 | |||
2383 | /* FIXME: As free_named_symtabs is currently a big noop this function | |||
2384 | is no longer needed. */ | |||
2385 | static void clear_symtab_users_once (void); | |||
2386 | ||||
2387 | static int clear_symtab_users_queued; | |||
2388 | static int clear_symtab_users_done; | |||
2389 | ||||
2390 | static void | |||
2391 | clear_symtab_users_once (void) | |||
2392 | { | |||
2393 | /* Enforce once-per-`do_cleanups'-semantics */ | |||
2394 | if (clear_symtab_users_queued <= clear_symtab_users_done) | |||
2395 | return; | |||
2396 | clear_symtab_users_done = clear_symtab_users_queued; | |||
2397 | ||||
2398 | clear_symtab_users (); | |||
2399 | } | |||
2400 | #endif | |||
2401 | ||||
2402 | /* Delete the specified psymtab, and any others that reference it. */ | |||
2403 | ||||
2404 | static void | |||
2405 | cashier_psymtab (struct partial_symtab *pst) | |||
2406 | { | |||
2407 | struct partial_symtab *ps, *pprev = NULL((void*)0); | |||
2408 | int i; | |||
2409 | ||||
2410 | /* Find its previous psymtab in the chain */ | |||
2411 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) | |||
2412 | { | |||
2413 | if (ps == pst) | |||
2414 | break; | |||
2415 | pprev = ps; | |||
2416 | } | |||
2417 | ||||
2418 | if (ps) | |||
2419 | { | |||
2420 | /* Unhook it from the chain. */ | |||
2421 | if (ps == pst->objfile->psymtabs) | |||
2422 | pst->objfile->psymtabs = ps->next; | |||
2423 | else | |||
2424 | pprev->next = ps->next; | |||
2425 | ||||
2426 | /* FIXME, we can't conveniently deallocate the entries in the | |||
2427 | partial_symbol lists (global_psymbols/static_psymbols) that | |||
2428 | this psymtab points to. These just take up space until all | |||
2429 | the psymtabs are reclaimed. Ditto the dependencies list and | |||
2430 | filename, which are all in the objfile_obstack. */ | |||
2431 | ||||
2432 | /* We need to cashier any psymtab that has this one as a dependency... */ | |||
2433 | again: | |||
2434 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) | |||
2435 | { | |||
2436 | for (i = 0; i < ps->number_of_dependencies; i++) | |||
2437 | { | |||
2438 | if (ps->dependencies[i] == pst) | |||
2439 | { | |||
2440 | cashier_psymtab (ps); | |||
2441 | goto again; /* Must restart, chain has been munged. */ | |||
2442 | } | |||
2443 | } | |||
2444 | } | |||
2445 | } | |||
2446 | } | |||
2447 | ||||
2448 | /* If a symtab or psymtab for filename NAME is found, free it along | |||
2449 | with any dependent breakpoints, displays, etc. | |||
2450 | Used when loading new versions of object modules with the "add-file" | |||
2451 | command. This is only called on the top-level symtab or psymtab's name; | |||
2452 | it is not called for subsidiary files such as .h files. | |||
2453 | ||||
2454 | Return value is 1 if we blew away the environment, 0 if not. | |||
2455 | FIXME. The return value appears to never be used. | |||
2456 | ||||
2457 | FIXME. I think this is not the best way to do this. We should | |||
2458 | work on being gentler to the environment while still cleaning up | |||
2459 | all stray pointers into the freed symtab. */ | |||
2460 | ||||
2461 | int | |||
2462 | free_named_symtabs (char *name) | |||
2463 | { | |||
2464 | #if 0 | |||
2465 | /* FIXME: With the new method of each objfile having it's own | |||
2466 | psymtab list, this function needs serious rethinking. In particular, | |||
2467 | why was it ever necessary to toss psymtabs with specific compilation | |||
2468 | unit filenames, as opposed to all psymtabs from a particular symbol | |||
2469 | file? -- fnf | |||
2470 | Well, the answer is that some systems permit reloading of particular | |||
2471 | compilation units. We want to blow away any old info about these | |||
2472 | compilation units, regardless of which objfiles they arrived in. --gnu. */ | |||
2473 | ||||
2474 | struct symtab *s; | |||
2475 | struct symtab *prev; | |||
2476 | struct partial_symtab *ps; | |||
2477 | struct blockvector *bv; | |||
2478 | int blewit = 0; | |||
2479 | ||||
2480 | /* We only wack things if the symbol-reload switch is set. */ | |||
2481 | if (!symbol_reloading) | |||
2482 | return 0; | |||
2483 | ||||
2484 | /* Some symbol formats have trouble providing file names... */ | |||
2485 | if (name == 0 || *name == '\0') | |||
2486 | return 0; | |||
2487 | ||||
2488 | /* Look for a psymtab with the specified name. */ | |||
2489 | ||||
2490 | again2: | |||
2491 | for (ps = partial_symtab_list; ps; ps = ps->next) | |||
2492 | { | |||
2493 | if (strcmp (name, ps->filename) == 0) | |||
2494 | { | |||
2495 | cashier_psymtab (ps); /* Blow it away...and its little dog, too. */ | |||
2496 | goto again2; /* Must restart, chain has been munged */ | |||
2497 | } | |||
2498 | } | |||
2499 | ||||
2500 | /* Look for a symtab with the specified name. */ | |||
2501 | ||||
2502 | for (s = symtab_list; s; s = s->next) | |||
2503 | { | |||
2504 | if (strcmp (name, s->filename) == 0) | |||
2505 | break; | |||
2506 | prev = s; | |||
2507 | } | |||
2508 | ||||
2509 | if (s) | |||
2510 | { | |||
2511 | if (s == symtab_list) | |||
2512 | symtab_list = s->next; | |||
2513 | else | |||
2514 | prev->next = s->next; | |||
2515 | ||||
2516 | /* For now, queue a delete for all breakpoints, displays, etc., whether | |||
2517 | or not they depend on the symtab being freed. This should be | |||
2518 | changed so that only those data structures affected are deleted. */ | |||
2519 | ||||
2520 | /* But don't delete anything if the symtab is empty. | |||
2521 | This test is necessary due to a bug in "dbxread.c" that | |||
2522 | causes empty symtabs to be created for N_SO symbols that | |||
2523 | contain the pathname of the object file. (This problem | |||
2524 | has been fixed in GDB 3.9x). */ | |||
2525 | ||||
2526 | bv = BLOCKVECTOR (s)(s)->blockvector; | |||
2527 | if (BLOCKVECTOR_NBLOCKS (bv)(bv)->nblocks > 2 | |||
2528 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)(bv)->block[GLOBAL_BLOCK]) | |||
2529 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)(bv)->block[STATIC_BLOCK])) | |||
2530 | { | |||
2531 | complaint (&symfile_complaints, "Replacing old symbols for `%s'", | |||
2532 | name); | |||
2533 | clear_symtab_users_queued++; | |||
2534 | make_cleanup (clear_symtab_users_once, 0); | |||
2535 | blewit = 1; | |||
2536 | } | |||
2537 | else | |||
2538 | { | |||
2539 | complaint (&symfile_complaints, "Empty symbol table found for `%s'", | |||
2540 | name); | |||
2541 | } | |||
2542 | ||||
2543 | free_symtab (s); | |||
2544 | } | |||
2545 | else | |||
2546 | { | |||
2547 | /* It is still possible that some breakpoints will be affected | |||
2548 | even though no symtab was found, since the file might have | |||
2549 | been compiled without debugging, and hence not be associated | |||
2550 | with a symtab. In order to handle this correctly, we would need | |||
2551 | to keep a list of text address ranges for undebuggable files. | |||
2552 | For now, we do nothing, since this is a fairly obscure case. */ | |||
2553 | ; | |||
2554 | } | |||
2555 | ||||
2556 | /* FIXME, what about the minimal symbol table? */ | |||
2557 | return blewit; | |||
2558 | #else | |||
2559 | return (0); | |||
2560 | #endif | |||
2561 | } | |||
2562 | ||||
2563 | /* Allocate and partially fill a partial symtab. It will be | |||
2564 | completely filled at the end of the symbol list. | |||
2565 | ||||
2566 | FILENAME is the name of the symbol-file we are reading from. */ | |||
2567 | ||||
2568 | struct partial_symtab * | |||
2569 | start_psymtab_common (struct objfile *objfile, | |||
2570 | struct section_offsets *section_offsets, char *filename, | |||
2571 | CORE_ADDR textlow, struct partial_symbol **global_syms, | |||
2572 | struct partial_symbol **static_syms) | |||
2573 | { | |||
2574 | struct partial_symtab *psymtab; | |||
2575 | ||||
2576 | psymtab = allocate_psymtab (filename, objfile); | |||
2577 | psymtab->section_offsets = section_offsets; | |||
2578 | psymtab->textlow = textlow; | |||
2579 | psymtab->texthigh = psymtab->textlow; /* default */ | |||
2580 | psymtab->globals_offset = global_syms - objfile->global_psymbols.list; | |||
2581 | psymtab->statics_offset = static_syms - objfile->static_psymbols.list; | |||
2582 | return (psymtab); | |||
2583 | } | |||
2584 | ||||
2585 | /* Add a symbol with a long value to a psymtab. | |||
2586 | Since one arg is a struct, we pass in a ptr and deref it (sigh). | |||
2587 | Return the partial symbol that has been added. */ | |||
2588 | ||||
2589 | /* NOTE: carlton/2003-09-11: The reason why we return the partial | |||
2590 | symbol is so that callers can get access to the symbol's demangled | |||
2591 | name, which they don't have any cheap way to determine otherwise. | |||
2592 | (Currenly, dwarf2read.c is the only file who uses that information, | |||
2593 | though it's possible that other readers might in the future.) | |||
2594 | Elena wasn't thrilled about that, and I don't blame her, but we | |||
2595 | couldn't come up with a better way to get that information. If | |||
2596 | it's needed in other situations, we could consider breaking up | |||
2597 | SYMBOL_SET_NAMES to provide access to the demangled name lookup | |||
2598 | cache. */ | |||
2599 | ||||
2600 | const struct partial_symbol * | |||
2601 | add_psymbol_to_list (char *name, int namelength, domain_enum domain, | |||
2602 | enum address_class class, | |||
2603 | struct psymbol_allocation_list *list, long val, /* Value as a long */ | |||
2604 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ | |||
2605 | enum language language, struct objfile *objfile) | |||
2606 | { | |||
2607 | struct partial_symbol *psym; | |||
2608 | char *buf = alloca (namelength + 1)__builtin_alloca(namelength + 1); | |||
2609 | /* psymbol is static so that there will be no uninitialized gaps in the | |||
2610 | structure which might contain random data, causing cache misses in | |||
2611 | bcache. */ | |||
2612 | static struct partial_symbol psymbol; | |||
2613 | ||||
2614 | /* Create local copy of the partial symbol */ | |||
2615 | memcpy (buf, name, namelength); | |||
2616 | buf[namelength] = '\0'; | |||
2617 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ | |||
2618 | if (val != 0) | |||
2619 | { | |||
2620 | SYMBOL_VALUE (&psymbol)(&psymbol)->ginfo.value.ivalue = val; | |||
2621 | } | |||
2622 | else | |||
2623 | { | |||
2624 | SYMBOL_VALUE_ADDRESS (&psymbol)(&psymbol)->ginfo.value.address = coreaddr; | |||
2625 | } | |||
2626 | SYMBOL_SECTION (&psymbol)(&psymbol)->ginfo.section = 0; | |||
2627 | SYMBOL_LANGUAGE (&psymbol)(&psymbol)->ginfo.language = language; | |||
2628 | PSYMBOL_DOMAIN (&psymbol)(&psymbol)->domain = domain; | |||
2629 | PSYMBOL_CLASS (&psymbol)(&psymbol)->aclass = class; | |||
2630 | ||||
2631 | SYMBOL_SET_NAMES (&psymbol, buf, namelength, objfile)symbol_set_names (&(&psymbol)->ginfo, buf, namelength , objfile); | |||
2632 | ||||
2633 | /* Stash the partial symbol away in the cache */ | |||
2634 | psym = deprecated_bcache (&psymbol, sizeof (struct partial_symbol), | |||
2635 | objfile->psymbol_cache); | |||
2636 | ||||
2637 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ | |||
2638 | if (list->next >= list->list + list->size) | |||
2639 | { | |||
2640 | extend_psymbol_list (list, objfile); | |||
2641 | } | |||
2642 | *list->next++ = psym; | |||
2643 | OBJSTAT (objfile, n_psyms++)(objfile -> stats.n_psyms++); | |||
2644 | ||||
2645 | return psym; | |||
2646 | } | |||
2647 | ||||
2648 | /* Add a symbol with a long value to a psymtab. This differs from | |||
2649 | * add_psymbol_to_list above in taking both a mangled and a demangled | |||
2650 | * name. */ | |||
2651 | ||||
2652 | void | |||
2653 | add_psymbol_with_dem_name_to_list (char *name, int namelength, char *dem_name, | |||
2654 | int dem_namelength, domain_enum domain, | |||
2655 | enum address_class class, | |||
2656 | struct psymbol_allocation_list *list, long val, /* Value as a long */ | |||
2657 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ | |||
2658 | enum language language, | |||
2659 | struct objfile *objfile) | |||
2660 | { | |||
2661 | struct partial_symbol *psym; | |||
2662 | char *buf = alloca (namelength + 1)__builtin_alloca(namelength + 1); | |||
2663 | /* psymbol is static so that there will be no uninitialized gaps in the | |||
2664 | structure which might contain random data, causing cache misses in | |||
2665 | bcache. */ | |||
2666 | static struct partial_symbol psymbol; | |||
2667 | ||||
2668 | /* Create local copy of the partial symbol */ | |||
2669 | ||||
2670 | memcpy (buf, name, namelength); | |||
2671 | buf[namelength] = '\0'; | |||
2672 | DEPRECATED_SYMBOL_NAME (&psymbol)(&psymbol)->ginfo.name = deprecated_bcache (buf, namelength + 1, | |||
2673 | objfile->psymbol_cache); | |||
2674 | ||||
2675 | buf = alloca (dem_namelength + 1)__builtin_alloca(dem_namelength + 1); | |||
2676 | memcpy (buf, dem_name, dem_namelength); | |||
2677 | buf[dem_namelength] = '\0'; | |||
2678 | ||||
2679 | switch (language) | |||
2680 | { | |||
2681 | case language_c: | |||
2682 | case language_cplus: | |||
2683 | SYMBOL_CPLUS_DEMANGLED_NAME (&psymbol)(&psymbol)->ginfo.language_specific.cplus_specific.demangled_name = | |||
2684 | deprecated_bcache (buf, dem_namelength + 1, objfile->psymbol_cache); | |||
2685 | break; | |||
2686 | /* FIXME What should be done for the default case? Ignoring for now. */ | |||
2687 | } | |||
2688 | ||||
2689 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ | |||
2690 | if (val != 0) | |||
2691 | { | |||
2692 | SYMBOL_VALUE (&psymbol)(&psymbol)->ginfo.value.ivalue = val; | |||
2693 | } | |||
2694 | else | |||
2695 | { | |||
2696 | SYMBOL_VALUE_ADDRESS (&psymbol)(&psymbol)->ginfo.value.address = coreaddr; | |||
2697 | } | |||
2698 | SYMBOL_SECTION (&psymbol)(&psymbol)->ginfo.section = 0; | |||
2699 | SYMBOL_LANGUAGE (&psymbol)(&psymbol)->ginfo.language = language; | |||
2700 | PSYMBOL_DOMAIN (&psymbol)(&psymbol)->domain = domain; | |||
2701 | PSYMBOL_CLASS (&psymbol)(&psymbol)->aclass = class; | |||
2702 | SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol, language)(symbol_init_language_specific (&(&psymbol)->ginfo , (language))); | |||
2703 | ||||
2704 | /* Stash the partial symbol away in the cache */ | |||
2705 | psym = deprecated_bcache (&psymbol, sizeof (struct partial_symbol), | |||
2706 | objfile->psymbol_cache); | |||
2707 | ||||
2708 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ | |||
2709 | if (list->next >= list->list + list->size) | |||
2710 | { | |||
2711 | extend_psymbol_list (list, objfile); | |||
2712 | } | |||
2713 | *list->next++ = psym; | |||
2714 | OBJSTAT (objfile, n_psyms++)(objfile -> stats.n_psyms++); | |||
2715 | } | |||
2716 | ||||
2717 | /* Initialize storage for partial symbols. */ | |||
2718 | ||||
2719 | void | |||
2720 | init_psymbol_list (struct objfile *objfile, int total_symbols) | |||
2721 | { | |||
2722 | /* Free any previously allocated psymbol lists. */ | |||
2723 | ||||
2724 | if (objfile->global_psymbols.list) | |||
2725 | { | |||
2726 | xfree (objfile->global_psymbols.list); | |||
2727 | } | |||
2728 | if (objfile->static_psymbols.list) | |||
2729 | { | |||
2730 | xfree (objfile->static_psymbols.list); | |||
2731 | } | |||
2732 | ||||
2733 | /* Current best guess is that approximately a twentieth | |||
2734 | of the total symbols (in a debugging file) are global or static | |||
2735 | oriented symbols */ | |||
2736 | ||||
2737 | objfile->global_psymbols.size = total_symbols / 10; | |||
2738 | objfile->static_psymbols.size = total_symbols / 10; | |||
2739 | ||||
2740 | if (objfile->global_psymbols.size > 0) | |||
2741 | { | |||
2742 | objfile->global_psymbols.next = | |||
2743 | objfile->global_psymbols.list = (struct partial_symbol **) | |||
2744 | xmalloc ((objfile->global_psymbols.size | |||
2745 | * sizeof (struct partial_symbol *))); | |||
2746 | } | |||
2747 | if (objfile->static_psymbols.size > 0) | |||
2748 | { | |||
2749 | objfile->static_psymbols.next = | |||
2750 | objfile->static_psymbols.list = (struct partial_symbol **) | |||
2751 | xmalloc ((objfile->static_psymbols.size | |||
2752 | * sizeof (struct partial_symbol *))); | |||
2753 | } | |||
2754 | } | |||
2755 | ||||
2756 | /* OVERLAYS: | |||
2757 | The following code implements an abstraction for debugging overlay sections. | |||
2758 | ||||
2759 | The target model is as follows: | |||
2760 | 1) The gnu linker will permit multiple sections to be mapped into the | |||
2761 | same VMA, each with its own unique LMA (or load address). | |||
2762 | 2) It is assumed that some runtime mechanism exists for mapping the | |||
2763 | sections, one by one, from the load address into the VMA address. | |||
2764 | 3) This code provides a mechanism for gdb to keep track of which | |||
2765 | sections should be considered to be mapped from the VMA to the LMA. | |||
2766 | This information is used for symbol lookup, and memory read/write. | |||
2767 | For instance, if a section has been mapped then its contents | |||
2768 | should be read from the VMA, otherwise from the LMA. | |||
2769 | ||||
2770 | Two levels of debugger support for overlays are available. One is | |||
2771 | "manual", in which the debugger relies on the user to tell it which | |||
2772 | overlays are currently mapped. This level of support is | |||
2773 | implemented entirely in the core debugger, and the information about | |||
2774 | whether a section is mapped is kept in the objfile->obj_section table. | |||
2775 | ||||
2776 | The second level of support is "automatic", and is only available if | |||
2777 | the target-specific code provides functionality to read the target's | |||
2778 | overlay mapping table, and translate its contents for the debugger | |||
2779 | (by updating the mapped state information in the obj_section tables). | |||
2780 | ||||
2781 | The interface is as follows: | |||
2782 | User commands: | |||
2783 | overlay map <name> -- tell gdb to consider this section mapped | |||
2784 | overlay unmap <name> -- tell gdb to consider this section unmapped | |||
2785 | overlay list -- list the sections that GDB thinks are mapped | |||
2786 | overlay read-target -- get the target's state of what's mapped | |||
2787 | overlay off/manual/auto -- set overlay debugging state | |||
2788 | Functional interface: | |||
2789 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |||
2790 | section, return that section. | |||
2791 | find_pc_overlay(pc): find any overlay section that contains | |||
2792 | the pc, either in its VMA or its LMA | |||
2793 | overlay_is_mapped(sect): true if overlay is marked as mapped | |||
2794 | section_is_overlay(sect): true if section's VMA != LMA | |||
2795 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |||
2796 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |||
2797 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap | |||
2798 | overlay_mapped_address(...): map an address from section's LMA to VMA | |||
2799 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |||
2800 | symbol_overlayed_address(...): Return a "current" address for symbol: | |||
2801 | either in VMA or LMA depending on whether | |||
2802 | the symbol's section is currently mapped | |||
2803 | */ | |||
2804 | ||||
2805 | /* Overlay debugging state: */ | |||
2806 | ||||
2807 | enum overlay_debugging_state overlay_debugging = ovly_off; | |||
2808 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state */ | |||
2809 | ||||
2810 | /* Target vector for refreshing overlay mapped state */ | |||
2811 | static void simple_overlay_update (struct obj_section *); | |||
2812 | void (*target_overlay_update) (struct obj_section *) = simple_overlay_update; | |||
2813 | ||||
2814 | /* Function: section_is_overlay (SECTION) | |||
2815 | Returns true if SECTION has VMA not equal to LMA, ie. | |||
2816 | SECTION is loaded at an address different from where it will "run". */ | |||
2817 | ||||
2818 | int | |||
2819 | section_is_overlay (asection *section) | |||
2820 | { | |||
2821 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ | |||
2822 | ||||
2823 | if (overlay_debugging) | |||
2824 | if (section && section->lma != 0 && | |||
2825 | section->vma != section->lma) | |||
2826 | return 1; | |||
2827 | ||||
2828 | return 0; | |||
2829 | } | |||
2830 | ||||
2831 | /* Function: overlay_invalidate_all (void) | |||
2832 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |||
2833 | ||||
2834 | static void | |||
2835 | overlay_invalidate_all (void) | |||
2836 | { | |||
2837 | struct objfile *objfile; | |||
2838 | struct obj_section *sect; | |||
2839 | ||||
2840 | ALL_OBJSECTIONS (objfile, sect)for ((objfile) = object_files; (objfile) != ((void*)0); (objfile ) = (objfile)->next) for (sect = objfile->sections; sect < objfile->sections_end; sect++) | |||
2841 | if (section_is_overlay (sect->the_bfd_section)) | |||
2842 | sect->ovly_mapped = -1; | |||
2843 | } | |||
2844 | ||||
2845 | /* Function: overlay_is_mapped (SECTION) | |||
2846 | Returns true if section is an overlay, and is currently mapped. | |||
2847 | Private: public access is thru function section_is_mapped. | |||
2848 | ||||
2849 | Access to the ovly_mapped flag is restricted to this function, so | |||
2850 | that we can do automatic update. If the global flag | |||
2851 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |||
2852 | overlay_invalidate_all. If the mapped state of the particular | |||
2853 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |||
2854 | ||||
2855 | static int | |||
2856 | overlay_is_mapped (struct obj_section *osect) | |||
2857 | { | |||
2858 | if (osect == 0 || !section_is_overlay (osect->the_bfd_section)) | |||
2859 | return 0; | |||
2860 | ||||
2861 | switch (overlay_debugging) | |||
2862 | { | |||
2863 | default: | |||
2864 | case ovly_off: | |||
2865 | return 0; /* overlay debugging off */ | |||
2866 | case ovly_auto: /* overlay debugging automatic */ | |||
2867 | /* Unles there is a target_overlay_update function, | |||
2868 | there's really nothing useful to do here (can't really go auto) */ | |||
2869 | if (target_overlay_update) | |||
2870 | { | |||
2871 | if (overlay_cache_invalid) | |||
2872 | { | |||
2873 | overlay_invalidate_all (); | |||
2874 | overlay_cache_invalid = 0; | |||
2875 | } | |||
2876 | if (osect->ovly_mapped == -1) | |||
2877 | (*target_overlay_update) (osect); | |||
2878 | } | |||
2879 | /* fall thru to manual case */ | |||
2880 | case ovly_on: /* overlay debugging manual */ | |||
2881 | return osect->ovly_mapped == 1; | |||
2882 | } | |||
2883 | } | |||
2884 | ||||
2885 | /* Function: section_is_mapped | |||
2886 | Returns true if section is an overlay, and is currently mapped. */ | |||
2887 | ||||
2888 | int | |||
2889 | section_is_mapped (asection *section) | |||
2890 | { | |||
2891 | struct objfile *objfile; | |||
2892 | struct obj_section *osect; | |||
2893 | ||||
2894 | if (overlay_debugging) | |||
2895 | if (section && section_is_overlay (section)) | |||
2896 | ALL_OBJSECTIONS (objfile, osect)for ((objfile) = object_files; (objfile) != ((void*)0); (objfile ) = (objfile)->next) for (osect = objfile->sections; osect < objfile->sections_end; osect++) | |||
2897 | if (osect->the_bfd_section == section) | |||
2898 | return overlay_is_mapped (osect); | |||
2899 | ||||
2900 | return 0; | |||
2901 | } | |||
2902 | ||||
2903 | /* Function: pc_in_unmapped_range | |||
2904 | If PC falls into the lma range of SECTION, return true, else false. */ | |||
2905 | ||||
2906 | CORE_ADDR | |||
2907 | pc_in_unmapped_range (CORE_ADDR pc, asection *section) | |||
2908 | { | |||
2909 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ | |||
2910 | ||||
2911 | int size; | |||
2912 | ||||
2913 | if (overlay_debugging) | |||
2914 | if (section && section_is_overlay (section)) | |||
2915 | { | |||
2916 | size = bfd_get_section_size (section)((section)->_raw_size); | |||
2917 | if (section->lma <= pc && pc < section->lma + size) | |||
2918 | return 1; | |||
2919 | } | |||
2920 | return 0; | |||
2921 | } | |||
2922 | ||||
2923 | /* Function: pc_in_mapped_range | |||
2924 | If PC falls into the vma range of SECTION, return true, else false. */ | |||
2925 | ||||
2926 | CORE_ADDR | |||
2927 | pc_in_mapped_range (CORE_ADDR pc, asection *section) | |||
2928 | { | |||
2929 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ | |||
2930 | ||||
2931 | int size; | |||
2932 | ||||
2933 | if (overlay_debugging) | |||
2934 | if (section && section_is_overlay (section)) | |||
2935 | { | |||
2936 | size = bfd_get_section_size (section)((section)->_raw_size); | |||
2937 | if (section->vma <= pc && pc < section->vma + size) | |||
2938 | return 1; | |||
2939 | } | |||
2940 | return 0; | |||
2941 | } | |||
2942 | ||||
2943 | ||||
2944 | /* Return true if the mapped ranges of sections A and B overlap, false | |||
2945 | otherwise. */ | |||
2946 | static int | |||
2947 | sections_overlap (asection *a, asection *b) | |||
2948 | { | |||
2949 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ | |||
2950 | ||||
2951 | CORE_ADDR a_start = a->vma; | |||
2952 | CORE_ADDR a_end = a->vma + bfd_get_section_size (a)((a)->_raw_size); | |||
2953 | CORE_ADDR b_start = b->vma; | |||
2954 | CORE_ADDR b_end = b->vma + bfd_get_section_size (b)((b)->_raw_size); | |||
2955 | ||||
2956 | return (a_start < b_end && b_start < a_end); | |||
2957 | } | |||
2958 | ||||
2959 | /* Function: overlay_unmapped_address (PC, SECTION) | |||
2960 | Returns the address corresponding to PC in the unmapped (load) range. | |||
2961 | May be the same as PC. */ | |||
2962 | ||||
2963 | CORE_ADDR | |||
2964 | overlay_unmapped_address (CORE_ADDR pc, asection *section) | |||
2965 | { | |||
2966 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ | |||
2967 | ||||
2968 | if (overlay_debugging) | |||
2969 | if (section && section_is_overlay (section) && | |||
2970 | pc_in_mapped_range (pc, section)) | |||
2971 | return pc + section->lma - section->vma; | |||
2972 | ||||
2973 | return pc; | |||
2974 | } | |||
2975 | ||||
2976 | /* Function: overlay_mapped_address (PC, SECTION) | |||
2977 | Returns the address corresponding to PC in the mapped (runtime) range. | |||
2978 | May be the same as PC. */ | |||
2979 | ||||
2980 | CORE_ADDR | |||
2981 | overlay_mapped_address (CORE_ADDR pc, asection *section) | |||
2982 | { | |||
2983 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ | |||
2984 | ||||
2985 | if (overlay_debugging) | |||
2986 | if (section && section_is_overlay (section) && | |||
2987 | pc_in_unmapped_range (pc, section)) | |||
2988 | return pc + section->vma - section->lma; | |||
2989 | ||||
2990 | return pc; | |||
2991 | } | |||
2992 | ||||
2993 | ||||
2994 | /* Function: symbol_overlayed_address | |||
2995 | Return one of two addresses (relative to the VMA or to the LMA), | |||
2996 | depending on whether the section is mapped or not. */ | |||
2997 | ||||
2998 | CORE_ADDR | |||
2999 | symbol_overlayed_address (CORE_ADDR address, asection *section) | |||
3000 | { | |||
3001 | if (overlay_debugging) | |||
3002 | { | |||
3003 | /* If the symbol has no section, just return its regular address. */ | |||
3004 | if (section == 0) | |||
3005 | return address; | |||
3006 | /* If the symbol's section is not an overlay, just return its address */ | |||
3007 | if (!section_is_overlay (section)) | |||
3008 | return address; | |||
3009 | /* If the symbol's section is mapped, just return its address */ | |||
3010 | if (section_is_mapped (section)) | |||
3011 | return address; | |||
3012 | /* | |||
3013 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |||
3014 | * then return its LOADED address rather than its vma address!! | |||
3015 | */ | |||
3016 | return overlay_unmapped_address (address, section); | |||
3017 | } | |||
3018 | return address; | |||
3019 | } | |||
3020 | ||||
3021 | /* Function: find_pc_overlay (PC) | |||
3022 | Return the best-match overlay section for PC: | |||
3023 | If PC matches a mapped overlay section's VMA, return that section. | |||
3024 | Else if PC matches an unmapped section's VMA, return that section. | |||
3025 | Else if PC matches an unmapped section's LMA, return that section. */ | |||
3026 | ||||
3027 | asection * | |||
3028 | find_pc_overlay (CORE_ADDR pc) | |||
3029 | { | |||
3030 | struct objfile *objfile; | |||
3031 | struct obj_section *osect, *best_match = NULL((void*)0); | |||
3032 | ||||
3033 | if (overlay_debugging) | |||
3034 | ALL_OBJSECTIONS (objfile, osect)for ((objfile) = object_files; (objfile) != ((void*)0); (objfile ) = (objfile)->next) for (osect = objfile->sections; osect < objfile->sections_end; osect++) | |||
3035 | if (section_is_overlay (osect->the_bfd_section)) | |||
3036 | { | |||
3037 | if (pc_in_mapped_range (pc, osect->the_bfd_section)) | |||
3038 | { | |||
3039 | if (overlay_is_mapped (osect)) | |||
3040 | return osect->the_bfd_section; | |||
3041 | else | |||
3042 | best_match = osect; | |||
3043 | } | |||
3044 | else if (pc_in_unmapped_range (pc, osect->the_bfd_section)) | |||
3045 | best_match = osect; | |||
3046 | } | |||
3047 | return best_match ? best_match->the_bfd_section : NULL((void*)0); | |||
3048 | } | |||
3049 | ||||
3050 | /* Function: find_pc_mapped_section (PC) | |||
3051 | If PC falls into the VMA address range of an overlay section that is | |||
3052 | currently marked as MAPPED, return that section. Else return NULL. */ | |||
3053 | ||||
3054 | asection * | |||
3055 | find_pc_mapped_section (CORE_ADDR pc) | |||
3056 | { | |||
3057 | struct objfile *objfile; | |||
3058 | struct obj_section *osect; | |||
3059 | ||||
3060 | if (overlay_debugging) | |||
3061 | ALL_OBJSECTIONS (objfile, osect)for ((objfile) = object_files; (objfile) != ((void*)0); (objfile ) = (objfile)->next) for (osect = objfile->sections; osect < objfile->sections_end; osect++) | |||
3062 | if (pc_in_mapped_range (pc, osect->the_bfd_section) && | |||
3063 | overlay_is_mapped (osect)) | |||
3064 | return osect->the_bfd_section; | |||
3065 | ||||
3066 | return NULL((void*)0); | |||
3067 | } | |||
3068 | ||||
3069 | /* Function: list_overlays_command | |||
3070 | Print a list of mapped sections and their PC ranges */ | |||
3071 | ||||
3072 | void | |||
3073 | list_overlays_command (char *args, int from_tty) | |||
3074 | { | |||
3075 | int nmapped = 0; | |||
3076 | struct objfile *objfile; | |||
3077 | struct obj_section *osect; | |||
3078 | ||||
3079 | if (overlay_debugging) | |||
| ||||
3080 | ALL_OBJSECTIONS (objfile, osect)for ((objfile) = object_files; (objfile) != ((void*)0); (objfile ) = (objfile)->next) for (osect = objfile->sections; osect < objfile->sections_end; osect++) | |||
3081 | if (overlay_is_mapped (osect)) | |||
3082 | { | |||
3083 | const char *name; | |||
3084 | bfd_vma lma, vma; | |||
3085 | int size; | |||
3086 | ||||
3087 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section)((osect->the_bfd_section)->vma); | |||
| ||||
3088 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section)((osect->the_bfd_section)->lma); | |||
3089 | size = bfd_get_section_size (osect->the_bfd_section)((osect->the_bfd_section)->_raw_size); | |||
3090 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section)((osect->the_bfd_section)->name); | |||
3091 | ||||
3092 | printf_filtered ("Section %s, loaded at ", name); | |||
3093 | print_address_numeric (lma, 1, gdb_stdout); | |||
3094 | puts_filtered (" - "); | |||
3095 | print_address_numeric (lma + size, 1, gdb_stdout); | |||
3096 | printf_filtered (", mapped at "); | |||
3097 | print_address_numeric (vma, 1, gdb_stdout); | |||
3098 | puts_filtered (" - "); | |||
3099 | print_address_numeric (vma + size, 1, gdb_stdout); | |||
3100 | puts_filtered ("\n"); | |||
3101 | ||||
3102 | nmapped++; | |||
3103 | } | |||
3104 | if (nmapped == 0) | |||
3105 | printf_filtered ("No sections are mapped.\n"); | |||
3106 | } | |||
3107 | ||||
3108 | /* Function: map_overlay_command | |||
3109 | Mark the named section as mapped (ie. residing at its VMA address). */ | |||
3110 | ||||
3111 | void | |||
3112 | map_overlay_command (char *args, int from_tty) | |||
3113 | { | |||
3114 | struct objfile *objfile, *objfile2; | |||
3115 | struct obj_section *sec, *sec2; | |||
3116 | asection *bfdsec; | |||
3117 | ||||
3118 | if (!overlay_debugging) | |||
3119 | error ("\ | |||
3120 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ | |||
3121 | the 'overlay manual' command."); | |||
3122 | ||||
3123 | if (args == 0 || *args == 0) | |||
3124 | error ("Argument required: name of an overlay section"); | |||
3125 | ||||
3126 | /* First, find a section matching the user supplied argument */ | |||
3127 | ALL_OBJSECTIONS (objfile, sec)for ((objfile) = object_files; (objfile) != ((void*)0); (objfile ) = (objfile)->next) for (sec = objfile->sections; sec < objfile->sections_end; sec++) | |||
3128 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section)((sec->the_bfd_section)->name), args)) | |||
3129 | { | |||
3130 | /* Now, check to see if the section is an overlay. */ | |||
3131 | bfdsec = sec->the_bfd_section; | |||
3132 | if (!section_is_overlay (bfdsec)) | |||
3133 | continue; /* not an overlay section */ | |||
3134 | ||||
3135 | /* Mark the overlay as "mapped" */ | |||
3136 | sec->ovly_mapped = 1; | |||
3137 | ||||
3138 | /* Next, make a pass and unmap any sections that are | |||
3139 | overlapped by this new section: */ | |||
3140 | ALL_OBJSECTIONS (objfile2, sec2)for ((objfile2) = object_files; (objfile2) != ((void*)0); (objfile2 ) = (objfile2)->next) for (sec2 = objfile2->sections; sec2 < objfile2->sections_end; sec2++) | |||
3141 | if (sec2->ovly_mapped | |||
3142 | && sec != sec2 | |||
3143 | && sec->the_bfd_section != sec2->the_bfd_section | |||
3144 | && sections_overlap (sec->the_bfd_section, | |||
3145 | sec2->the_bfd_section)) | |||
3146 | { | |||
3147 | if (info_verbose) | |||
3148 | printf_unfiltered ("Note: section %s unmapped by overlap\n", | |||
3149 | bfd_section_name (objfile->obfd,((sec2->the_bfd_section)->name) | |||
3150 | sec2->the_bfd_section)((sec2->the_bfd_section)->name)); | |||
3151 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2 */ | |||
3152 | } | |||
3153 | return; | |||
3154 | } | |||
3155 | error ("No overlay section called %s", args); | |||
3156 | } | |||
3157 | ||||
3158 | /* Function: unmap_overlay_command | |||
3159 | Mark the overlay section as unmapped | |||
3160 | (ie. resident in its LMA address range, rather than the VMA range). */ | |||
3161 | ||||
3162 | void | |||
3163 | unmap_overlay_command (char *args, int from_tty) | |||
3164 | { | |||
3165 | struct objfile *objfile; | |||
3166 | struct obj_section *sec; | |||
3167 | ||||
3168 | if (!overlay_debugging) | |||
3169 | error ("\ | |||
3170 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ | |||
3171 | the 'overlay manual' command."); | |||
3172 | ||||
3173 | if (args == 0 || *args == 0) | |||
3174 | error ("Argument required: name of an overlay section"); | |||
3175 | ||||
3176 | /* First, find a section matching the user supplied argument */ | |||
3177 | ALL_OBJSECTIONS (objfile, sec)for ((objfile) = object_files; (objfile) != ((void*)0); (objfile ) = (objfile)->next) for (sec = objfile->sections; sec < objfile->sections_end; sec++) | |||
3178 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section)((sec->the_bfd_section)->name), args)) | |||
3179 | { | |||
3180 | if (!sec->ovly_mapped) | |||
3181 | error ("Section %s is not mapped", args); | |||
3182 | sec->ovly_mapped = 0; | |||
3183 | return; | |||
3184 | } | |||
3185 | error ("No overlay section called %s", args); | |||
3186 | } | |||
3187 | ||||
3188 | /* Function: overlay_auto_command | |||
3189 | A utility command to turn on overlay debugging. | |||
3190 | Possibly this should be done via a set/show command. */ | |||
3191 | ||||
3192 | static void | |||
3193 | overlay_auto_command (char *args, int from_tty) | |||
3194 | { | |||
3195 | overlay_debugging = ovly_auto; | |||
3196 | enable_overlay_breakpoints (); | |||
3197 | if (info_verbose) | |||
3198 | printf_unfiltered ("Automatic overlay debugging enabled."); | |||
3199 | } | |||
3200 | ||||
3201 | /* Function: overlay_manual_command | |||
3202 | A utility command to turn on overlay debugging. | |||
3203 | Possibly this should be done via a set/show command. */ | |||
3204 | ||||
3205 | static void | |||
3206 | overlay_manual_command (char *args, int from_tty) | |||
3207 | { | |||
3208 | overlay_debugging = ovly_on; | |||
3209 | disable_overlay_breakpoints (); | |||
3210 | if (info_verbose) | |||
3211 | printf_unfiltered ("Overlay debugging enabled."); | |||
3212 | } | |||
3213 | ||||
3214 | /* Function: overlay_off_command | |||
3215 | A utility command to turn on overlay debugging. | |||
3216 | Possibly this should be done via a set/show command. */ | |||
3217 | ||||
3218 | static void | |||
3219 | overlay_off_command (char *args, int from_tty) | |||
3220 | { | |||
3221 | overlay_debugging = ovly_off; | |||
3222 | disable_overlay_breakpoints (); | |||
3223 | if (info_verbose) | |||
3224 | printf_unfiltered ("Overlay debugging disabled."); | |||
3225 | } | |||
3226 | ||||
3227 | static void | |||
3228 | overlay_load_command (char *args, int from_tty) | |||
3229 | { | |||
3230 | if (target_overlay_update) | |||
3231 | (*target_overlay_update) (NULL((void*)0)); | |||
3232 | else | |||
3233 | error ("This target does not know how to read its overlay state."); | |||
3234 | } | |||
3235 | ||||
3236 | /* Function: overlay_command | |||
3237 | A place-holder for a mis-typed command */ | |||
3238 | ||||
3239 | /* Command list chain containing all defined "overlay" subcommands. */ | |||
3240 | struct cmd_list_element *overlaylist; | |||
3241 | ||||
3242 | static void | |||
3243 | overlay_command (char *args, int from_tty) | |||
3244 | { | |||
3245 | printf_unfiltered | |||
3246 | ("\"overlay\" must be followed by the name of an overlay command.\n"); | |||
3247 | help_list (overlaylist, "overlay ", -1, gdb_stdout); | |||
3248 | } | |||
3249 | ||||
3250 | ||||
3251 | /* Target Overlays for the "Simplest" overlay manager: | |||
3252 | ||||
3253 | This is GDB's default target overlay layer. It works with the | |||
3254 | minimal overlay manager supplied as an example by Cygnus. The | |||
3255 | entry point is via a function pointer "target_overlay_update", | |||
3256 | so targets that use a different runtime overlay manager can | |||
3257 | substitute their own overlay_update function and take over the | |||
3258 | function pointer. | |||
3259 | ||||
3260 | The overlay_update function pokes around in the target's data structures | |||
3261 | to see what overlays are mapped, and updates GDB's overlay mapping with | |||
3262 | this information. | |||
3263 | ||||
3264 | In this simple implementation, the target data structures are as follows: | |||
3265 | unsigned _novlys; /# number of overlay sections #/ | |||
3266 | unsigned _ovly_table[_novlys][4] = { | |||
3267 | {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/ | |||
3268 | {..., ..., ..., ...}, | |||
3269 | } | |||
3270 | unsigned _novly_regions; /# number of overlay regions #/ | |||
3271 | unsigned _ovly_region_table[_novly_regions][3] = { | |||
3272 | {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ | |||
3273 | {..., ..., ...}, | |||
3274 | } | |||
3275 | These functions will attempt to update GDB's mappedness state in the | |||
3276 | symbol section table, based on the target's mappedness state. | |||
3277 | ||||
3278 | To do this, we keep a cached copy of the target's _ovly_table, and | |||
3279 | attempt to detect when the cached copy is invalidated. The main | |||
3280 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |||
3281 | the cached table and re-reads only the entry for that section from | |||
3282 | the target (whenever possible). | |||
3283 | */ | |||
3284 | ||||
3285 | /* Cached, dynamically allocated copies of the target data structures: */ | |||
3286 | static unsigned (*cache_ovly_table)[4] = 0; | |||
3287 | #if 0 | |||
3288 | static unsigned (*cache_ovly_region_table)[3] = 0; | |||
3289 | #endif | |||
3290 | static unsigned cache_novlys = 0; | |||
3291 | #if 0 | |||
3292 | static unsigned cache_novly_regions = 0; | |||
3293 | #endif | |||
3294 | static CORE_ADDR cache_ovly_table_base = 0; | |||
3295 | #if 0 | |||
3296 | static CORE_ADDR cache_ovly_region_table_base = 0; | |||
3297 | #endif | |||
3298 | enum ovly_index | |||
3299 | { | |||
3300 | VMA, SIZE, LMA, MAPPED | |||
3301 | }; | |||
3302 | #define TARGET_LONG_BYTES((gdbarch_long_bit (current_gdbarch)) / 8) (TARGET_LONG_BIT(gdbarch_long_bit (current_gdbarch)) / TARGET_CHAR_BIT8) | |||
3303 | ||||
3304 | /* Throw away the cached copy of _ovly_table */ | |||
3305 | static void | |||
3306 | simple_free_overlay_table (void) | |||
3307 | { | |||
3308 | if (cache_ovly_table) | |||
3309 | xfree (cache_ovly_table); | |||
3310 | cache_novlys = 0; | |||
3311 | cache_ovly_table = NULL((void*)0); | |||
3312 | cache_ovly_table_base = 0; | |||
3313 | } | |||
3314 | ||||
3315 | #if 0 | |||
3316 | /* Throw away the cached copy of _ovly_region_table */ | |||
3317 | static void | |||
3318 | simple_free_overlay_region_table (void) | |||
3319 | { | |||
3320 | if (cache_ovly_region_table) | |||
3321 | xfree (cache_ovly_region_table); | |||
3322 | cache_novly_regions = 0; | |||
3323 | cache_ovly_region_table = NULL((void*)0); | |||
3324 | cache_ovly_region_table_base = 0; | |||
3325 | } | |||
3326 | #endif | |||
3327 | ||||
3328 | /* Read an array of ints from the target into a local buffer. | |||
3329 | Convert to host order. int LEN is number of ints */ | |||
3330 | static void | |||
3331 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, int len) | |||
3332 | { | |||
3333 | /* FIXME (alloca): Not safe if array is very large. */ | |||
3334 | char *buf = alloca (len * TARGET_LONG_BYTES)__builtin_alloca(len * ((gdbarch_long_bit (current_gdbarch)) / 8)); | |||
3335 | int i; | |||
3336 | ||||
3337 | read_memory (memaddr, buf, len * TARGET_LONG_BYTES((gdbarch_long_bit (current_gdbarch)) / 8)); | |||
3338 | for (i = 0; i < len; i++) | |||
3339 | myaddr[i] = extract_unsigned_integer (TARGET_LONG_BYTES((gdbarch_long_bit (current_gdbarch)) / 8) * i + buf, | |||
3340 | TARGET_LONG_BYTES((gdbarch_long_bit (current_gdbarch)) / 8)); | |||
3341 | } | |||
3342 | ||||
3343 | /* Find and grab a copy of the target _ovly_table | |||
3344 | (and _novlys, which is needed for the table's size) */ | |||
3345 | static int | |||
3346 | simple_read_overlay_table (void) | |||
3347 | { | |||
3348 | struct minimal_symbol *novlys_msym, *ovly_table_msym; | |||
3349 | ||||
3350 | simple_free_overlay_table (); | |||
3351 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL((void*)0), NULL((void*)0)); | |||
3352 | if (! novlys_msym) | |||
3353 | { | |||
3354 | error ("Error reading inferior's overlay table: " | |||
3355 | "couldn't find `_novlys' variable\n" | |||
3356 | "in inferior. Use `overlay manual' mode."); | |||
3357 | return 0; | |||
3358 | } | |||
3359 | ||||
3360 | ovly_table_msym = lookup_minimal_symbol ("_ovly_table", NULL((void*)0), NULL((void*)0)); | |||
3361 | if (! ovly_table_msym) | |||
3362 | { | |||
3363 | error ("Error reading inferior's overlay table: couldn't find " | |||
3364 | "`_ovly_table' array\n" | |||
3365 | "in inferior. Use `overlay manual' mode."); | |||
3366 | return 0; | |||
3367 | } | |||
3368 | ||||
3369 | cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (novlys_msym)(novlys_msym)->ginfo.value.address, 4); | |||
3370 | cache_ovly_table | |||
3371 | = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); | |||
3372 | cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (ovly_table_msym)(ovly_table_msym)->ginfo.value.address; | |||
3373 | read_target_long_array (cache_ovly_table_base, | |||
3374 | (int *) cache_ovly_table, | |||
3375 | cache_novlys * 4); | |||
3376 | ||||
3377 | return 1; /* SUCCESS */ | |||
3378 | } | |||
3379 | ||||
3380 | #if 0 | |||
3381 | /* Find and grab a copy of the target _ovly_region_table | |||
3382 | (and _novly_regions, which is needed for the table's size) */ | |||
3383 | static int | |||
3384 | simple_read_overlay_region_table (void) | |||
3385 | { | |||
3386 | struct minimal_symbol *msym; | |||
3387 | ||||
3388 | simple_free_overlay_region_table (); | |||
3389 | msym = lookup_minimal_symbol ("_novly_regions", NULL((void*)0), NULL((void*)0)); | |||
3390 | if (msym != NULL((void*)0)) | |||
3391 | cache_novly_regions = read_memory_integer (SYMBOL_VALUE_ADDRESS (msym)(msym)->ginfo.value.address, 4); | |||
3392 | else | |||
3393 | return 0; /* failure */ | |||
3394 | cache_ovly_region_table = (void *) xmalloc (cache_novly_regions * 12); | |||
3395 | if (cache_ovly_region_table != NULL((void*)0)) | |||
3396 | { | |||
3397 | msym = lookup_minimal_symbol ("_ovly_region_table", NULL((void*)0), NULL((void*)0)); | |||
3398 | if (msym != NULL((void*)0)) | |||
3399 | { | |||
3400 | cache_ovly_region_table_base = SYMBOL_VALUE_ADDRESS (msym)(msym)->ginfo.value.address; | |||
3401 | read_target_long_array (cache_ovly_region_table_base, | |||
3402 | (int *) cache_ovly_region_table, | |||
3403 | cache_novly_regions * 3); | |||
3404 | } | |||
3405 | else | |||
3406 | return 0; /* failure */ | |||
3407 | } | |||
3408 | else | |||
3409 | return 0; /* failure */ | |||
3410 | return 1; /* SUCCESS */ | |||
3411 | } | |||
3412 | #endif | |||
3413 | ||||
3414 | /* Function: simple_overlay_update_1 | |||
3415 | A helper function for simple_overlay_update. Assuming a cached copy | |||
3416 | of _ovly_table exists, look through it to find an entry whose vma, | |||
3417 | lma and size match those of OSECT. Re-read the entry and make sure | |||
3418 | it still matches OSECT (else the table may no longer be valid). | |||
3419 | Set OSECT's mapped state to match the entry. Return: 1 for | |||
3420 | success, 0 for failure. */ | |||
3421 | ||||
3422 | static int | |||
3423 | simple_overlay_update_1 (struct obj_section *osect) | |||
3424 | { | |||
3425 | int i, size; | |||
3426 | bfd *obfd = osect->objfile->obfd; | |||
3427 | asection *bsect = osect->the_bfd_section; | |||
3428 | ||||
3429 | size = bfd_get_section_size (osect->the_bfd_section)((osect->the_bfd_section)->_raw_size); | |||
3430 | for (i = 0; i < cache_novlys; i++) | |||
3431 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect)((bsect)->vma) | |||
3432 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)((bsect)->lma) | |||
3433 | /* && cache_ovly_table[i][SIZE] == size */ ) | |||
3434 | { | |||
3435 | read_target_long_array (cache_ovly_table_base + i * TARGET_LONG_BYTES((gdbarch_long_bit (current_gdbarch)) / 8), | |||
3436 | (int *) cache_ovly_table[i], 4); | |||
3437 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect)((bsect)->vma) | |||
3438 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)((bsect)->lma) | |||
3439 | /* && cache_ovly_table[i][SIZE] == size */ ) | |||
3440 | { | |||
3441 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |||
3442 | return 1; | |||
3443 | } | |||
3444 | else /* Warning! Warning! Target's ovly table has changed! */ | |||
3445 | return 0; | |||
3446 | } | |||
3447 | return 0; | |||
3448 | } | |||
3449 | ||||
3450 | /* Function: simple_overlay_update | |||
3451 | If OSECT is NULL, then update all sections' mapped state | |||
3452 | (after re-reading the entire target _ovly_table). | |||
3453 | If OSECT is non-NULL, then try to find a matching entry in the | |||
3454 | cached ovly_table and update only OSECT's mapped state. | |||
3455 | If a cached entry can't be found or the cache isn't valid, then | |||
3456 | re-read the entire cache, and go ahead and update all sections. */ | |||
3457 | ||||
3458 | static void | |||
3459 | simple_overlay_update (struct obj_section *osect) | |||
3460 | { | |||
3461 | struct objfile *objfile; | |||
3462 | ||||
3463 | /* Were we given an osect to look up? NULL means do all of them. */ | |||
3464 | if (osect) | |||
3465 | /* Have we got a cached copy of the target's overlay table? */ | |||
3466 | if (cache_ovly_table != NULL((void*)0)) | |||
3467 | /* Does its cached location match what's currently in the symtab? */ | |||
3468 | if (cache_ovly_table_base == | |||
3469 | SYMBOL_VALUE_ADDRESS (lookup_minimal_symbol ("_ovly_table", NULL, NULL))(lookup_minimal_symbol ("_ovly_table", ((void*)0), ((void*)0) ))->ginfo.value.address) | |||
3470 | /* Then go ahead and try to look up this single section in the cache */ | |||
3471 | if (simple_overlay_update_1 (osect)) | |||
3472 | /* Found it! We're done. */ | |||
3473 | return; | |||
3474 | ||||
3475 | /* Cached table no good: need to read the entire table anew. | |||
3476 | Or else we want all the sections, in which case it's actually | |||
3477 | more efficient to read the whole table in one block anyway. */ | |||
3478 | ||||
3479 | if (! simple_read_overlay_table ()) | |||
3480 | return; | |||
3481 | ||||
3482 | /* Now may as well update all sections, even if only one was requested. */ | |||
3483 | ALL_OBJSECTIONS (objfile, osect)for ((objfile) = object_files; (objfile) != ((void*)0); (objfile ) = (objfile)->next) for (osect = objfile->sections; osect < objfile->sections_end; osect++) | |||
3484 | if (section_is_overlay (osect->the_bfd_section)) | |||
3485 | { | |||
3486 | int i, size; | |||
3487 | bfd *obfd = osect->objfile->obfd; | |||
3488 | asection *bsect = osect->the_bfd_section; | |||
3489 | ||||
3490 | size = bfd_get_section_size (bsect)((bsect)->_raw_size); | |||
3491 | for (i = 0; i < cache_novlys; i++) | |||
3492 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect)((bsect)->vma) | |||
3493 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)((bsect)->lma) | |||
3494 | /* && cache_ovly_table[i][SIZE] == size */ ) | |||
3495 | { /* obj_section matches i'th entry in ovly_table */ | |||
3496 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |||
3497 | break; /* finished with inner for loop: break out */ | |||
3498 | } | |||
3499 | } | |||
3500 | } | |||
3501 | ||||
3502 | /* Set the output sections and output offsets for section SECTP in | |||
3503 | ABFD. The relocation code in BFD will read these offsets, so we | |||
3504 | need to be sure they're initialized. We map each section to itself, | |||
3505 | with no offset; this means that SECTP->vma will be honored. */ | |||
3506 | ||||
3507 | static void | |||
3508 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |||
3509 | { | |||
3510 | sectp->output_section = sectp; | |||
3511 | sectp->output_offset = 0; | |||
3512 | } | |||
3513 | ||||
3514 | /* Relocate the contents of a debug section SECTP in ABFD. The | |||
3515 | contents are stored in BUF if it is non-NULL, or returned in a | |||
3516 | malloc'd buffer otherwise. | |||
3517 | ||||
3518 | For some platforms and debug info formats, shared libraries contain | |||
3519 | relocations against the debug sections (particularly for DWARF-2; | |||
3520 | one affected platform is PowerPC GNU/Linux, although it depends on | |||
3521 | the version of the linker in use). Also, ELF object files naturally | |||
3522 | have unresolved relocations for their debug sections. We need to apply | |||
3523 | the relocations in order to get the locations of symbols correct. */ | |||
3524 | ||||
3525 | bfd_byte * | |||
3526 | symfile_relocate_debug_section (bfd *abfd, asection *sectp, bfd_byte *buf) | |||
3527 | { | |||
3528 | /* We're only interested in debugging sections with relocation | |||
3529 | information. */ | |||
3530 | if ((sectp->flags & SEC_RELOC0x004) == 0) | |||
3531 | return NULL((void*)0); | |||
3532 | if ((sectp->flags & SEC_DEBUGGING0x10000) == 0) | |||
3533 | return NULL((void*)0); | |||
3534 | ||||
3535 | /* We will handle section offsets properly elsewhere, so relocate as if | |||
3536 | all sections begin at 0. */ | |||
3537 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL((void*)0)); | |||
3538 | ||||
3539 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL((void*)0)); | |||
3540 | } | |||
3541 | ||||
3542 | void | |||
3543 | _initialize_symfile (void) | |||
3544 | { | |||
3545 | struct cmd_list_element *c; | |||
3546 | ||||
3547 | c = add_cmd ("symbol-file", class_files, symbol_file_command, | |||
3548 | "Load symbol table from executable file FILE.\n\ | |||
3549 | The `file' command can also load symbol tables, as well as setting the file\n\ | |||
3550 | to execute.", &cmdlist); | |||
3551 | set_cmd_completer (c, filename_completer); | |||
3552 | ||||
3553 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, | |||
3554 | "Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR> ...]\n\ | |||
3555 | Load the symbols from FILE, assuming FILE has been dynamically loaded.\n\ | |||
3556 | ADDR is the starting address of the file's text.\n\ | |||
3557 | The optional arguments are section-name section-address pairs and\n\ | |||
3558 | should be specified if the data and bss segments are not contiguous\n\ | |||
3559 | with the text. SECT is a section name to be loaded at SECT_ADDR.", | |||
3560 | &cmdlist); | |||
3561 | set_cmd_completer (c, filename_completer); | |||
3562 | ||||
3563 | c = add_cmd ("add-shared-symbol-files", class_files, | |||
3564 | add_shared_symbol_files_command, | |||
3565 | "Load the symbols from shared objects in the dynamic linker's link map.", | |||
3566 | &cmdlist); | |||
3567 | c = add_alias_cmd ("assf", "add-shared-symbol-files", class_files, 1, | |||
3568 | &cmdlist); | |||
3569 | ||||
3570 | c = add_cmd ("load", class_files, load_command, | |||
3571 | "Dynamically load FILE into the running program, and record its symbols\n\ | |||
3572 | for access from GDB.", &cmdlist); | |||
3573 | set_cmd_completer (c, filename_completer); | |||
3574 | ||||
3575 | deprecated_add_show_from_set | |||
3576 | (add_set_cmd ("symbol-reloading", class_support, var_boolean, | |||
3577 | (char *) &symbol_reloading, | |||
3578 | "Set dynamic symbol table reloading multiple times in one run.", | |||
3579 | &setlist), | |||
3580 | &showlist); | |||
3581 | ||||
3582 | add_prefix_cmd ("overlay", class_support, overlay_command, | |||
3583 | "Commands for debugging overlays.", &overlaylist, | |||
3584 | "overlay ", 0, &cmdlist); | |||
3585 | ||||
3586 | add_com_alias ("ovly", "overlay", class_alias, 1); | |||
3587 | add_com_alias ("ov", "overlay", class_alias, 1); | |||
3588 | ||||
3589 | add_cmd ("map-overlay", class_support, map_overlay_command, | |||
3590 | "Assert that an overlay section is mapped.", &overlaylist); | |||
3591 | ||||
3592 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, | |||
3593 | "Assert that an overlay section is unmapped.", &overlaylist); | |||
3594 | ||||
3595 | add_cmd ("list-overlays", class_support, list_overlays_command, | |||
3596 | "List mappings of overlay sections.", &overlaylist); | |||
3597 | ||||
3598 | add_cmd ("manual", class_support, overlay_manual_command, | |||
3599 | "Enable overlay debugging.", &overlaylist); | |||
3600 | add_cmd ("off", class_support, overlay_off_command, | |||
3601 | "Disable overlay debugging.", &overlaylist); | |||
3602 | add_cmd ("auto", class_support, overlay_auto_command, | |||
3603 | "Enable automatic overlay debugging.", &overlaylist); | |||
3604 | add_cmd ("load-target", class_support, overlay_load_command, | |||
3605 | "Read the overlay mapping state from the target.", &overlaylist); | |||
3606 | ||||
3607 | /* Filename extension to source language lookup table: */ | |||
3608 | init_filename_language_table (); | |||
3609 | c = add_set_cmd ("extension-language", class_files, var_string_noescape, | |||
3610 | (char *) &ext_args, | |||
3611 | "Set mapping between filename extension and source language.\n\ | |||
3612 | Usage: set extension-language .foo bar", | |||
3613 | &setlist); | |||
3614 | set_cmd_cfunc (c, set_ext_lang_command); | |||
3615 | ||||
3616 | add_info ("extensions", info_ext_lang_command, | |||
3617 | "All filename extensions associated with a source language."); | |||
3618 | ||||
3619 | deprecated_add_show_from_set | |||
3620 | (add_set_cmd ("download-write-size", class_obscure, | |||
3621 | var_integer, (char *) &download_write_size, | |||
3622 | "Set the write size used when downloading a program.\n" | |||
3623 | "Only used when downloading a program onto a remote\n" | |||
3624 | "target. Specify zero, or a negative value, to disable\n" | |||
3625 | "blocked writes. The actual size of each transfer is also\n" | |||
3626 | "limited by the size of the target packet and the memory\n" | |||
3627 | "cache.\n", | |||
3628 | &setlist), | |||
3629 | &showlist); | |||
3630 | ||||
3631 | debug_file_directory = xstrdup (DEBUGDIR"/usr/lib/debug"); | |||
3632 | c = (add_set_cmd | |||
3633 | ("debug-file-directory", class_support, var_string, | |||
3634 | (char *) &debug_file_directory, | |||
3635 | "Set the directory where separate debug symbols are searched for.\n" | |||
3636 | "Separate debug symbols are first searched for in the same\n" | |||
3637 | "directory as the binary, then in the `" DEBUG_SUBDIRECTORY".debug" | |||
3638 | "' subdirectory,\n" | |||
3639 | "and lastly at the path of the directory of the binary with\n" | |||
3640 | "the global debug-file directory prepended\n", | |||
3641 | &setlist)); | |||
3642 | deprecated_add_show_from_set (c, &showlist); | |||
3643 | set_cmd_completer (c, filename_completer); | |||
3644 | } |