Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Generic symbol file reading for the GNU debugger, GDB. |
8926118c AC |
2 | |
3 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, | |
1bac305b | 4 | 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc. |
8926118c | 5 | |
c906108c SS |
6 | Contributed by Cygnus Support, using pieces from other GDB modules. |
7 | ||
c5aa993b | 8 | This file is part of GDB. |
c906108c | 9 | |
c5aa993b JM |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2 of the License, or | |
13 | (at your option) any later version. | |
c906108c | 14 | |
c5aa993b JM |
15 | This program is distributed in the hope that it will be useful, |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
c906108c | 19 | |
c5aa993b JM |
20 | You should have received a copy of the GNU General Public License |
21 | along with this program; if not, write to the Free Software | |
22 | Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
24 | |
25 | #include "defs.h" | |
086df311 | 26 | #include "bfdlink.h" |
c906108c SS |
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" | |
0378c332 | 35 | #include "source.h" |
c906108c SS |
36 | #include "gdbcmd.h" |
37 | #include "breakpoint.h" | |
38 | #include "language.h" | |
39 | #include "complaints.h" | |
40 | #include "demangle.h" | |
c5aa993b | 41 | #include "inferior.h" /* for write_pc */ |
5b5d99cf | 42 | #include "filenames.h" /* for DOSish file names */ |
c906108c | 43 | #include "gdb-stabs.h" |
04ea0df1 | 44 | #include "gdb_obstack.h" |
d75b5104 | 45 | #include "completer.h" |
af5f3db6 | 46 | #include "bcache.h" |
2de7ced7 | 47 | #include "hashtab.h" |
38017ce8 | 48 | #include <readline/readline.h> |
7e8580c1 | 49 | #include "gdb_assert.h" |
c906108c | 50 | |
c906108c SS |
51 | #include <sys/types.h> |
52 | #include <fcntl.h> | |
53 | #include "gdb_string.h" | |
54 | #include "gdb_stat.h" | |
55 | #include <ctype.h> | |
56 | #include <time.h> | |
c906108c SS |
57 | |
58 | #ifndef O_BINARY | |
59 | #define O_BINARY 0 | |
60 | #endif | |
61 | ||
62 | #ifdef HPUXHPPA | |
63 | ||
64 | /* Some HP-UX related globals to clear when a new "main" | |
65 | symbol file is loaded. HP-specific. */ | |
66 | ||
67 | extern int hp_som_som_object_present; | |
68 | extern int hp_cxx_exception_support_initialized; | |
69 | #define RESET_HP_UX_GLOBALS() do {\ | |
70 | hp_som_som_object_present = 0; /* indicates HP-compiled code */ \ | |
71 | hp_cxx_exception_support_initialized = 0; /* must reinitialize exception stuff */ \ | |
72 | } while (0) | |
73 | #endif | |
74 | ||
917317f4 | 75 | int (*ui_load_progress_hook) (const char *section, unsigned long num); |
c2d11a7d JM |
76 | void (*show_load_progress) (const char *section, |
77 | unsigned long section_sent, | |
78 | unsigned long section_size, | |
79 | unsigned long total_sent, | |
80 | unsigned long total_size); | |
507f3c78 KB |
81 | void (*pre_add_symbol_hook) (char *); |
82 | void (*post_add_symbol_hook) (void); | |
83 | void (*target_new_objfile_hook) (struct objfile *); | |
c906108c | 84 | |
74b7792f AC |
85 | static void clear_symtab_users_cleanup (void *ignore); |
86 | ||
c906108c | 87 | /* Global variables owned by this file */ |
c5aa993b | 88 | int readnow_symbol_files; /* Read full symbols immediately */ |
c906108c | 89 | |
c906108c SS |
90 | /* External variables and functions referenced. */ |
91 | ||
a14ed312 | 92 | extern void report_transfer_performance (unsigned long, time_t, time_t); |
c906108c SS |
93 | |
94 | /* Functions this file defines */ | |
95 | ||
96 | #if 0 | |
a14ed312 KB |
97 | static int simple_read_overlay_region_table (void); |
98 | static void simple_free_overlay_region_table (void); | |
c906108c SS |
99 | #endif |
100 | ||
a14ed312 | 101 | static void set_initial_language (void); |
c906108c | 102 | |
a14ed312 | 103 | static void load_command (char *, int); |
c906108c | 104 | |
d7db6da9 FN |
105 | static void symbol_file_add_main_1 (char *args, int from_tty, int flags); |
106 | ||
a14ed312 | 107 | static void add_symbol_file_command (char *, int); |
c906108c | 108 | |
a14ed312 | 109 | static void add_shared_symbol_files_command (char *, int); |
c906108c | 110 | |
5b5d99cf JB |
111 | static void reread_separate_symbols (struct objfile *objfile); |
112 | ||
a14ed312 | 113 | static void cashier_psymtab (struct partial_symtab *); |
c906108c | 114 | |
a14ed312 | 115 | bfd *symfile_bfd_open (char *); |
c906108c | 116 | |
0e931cf0 JB |
117 | int get_section_index (struct objfile *, char *); |
118 | ||
a14ed312 | 119 | static void find_sym_fns (struct objfile *); |
c906108c | 120 | |
a14ed312 | 121 | static void decrement_reading_symtab (void *); |
c906108c | 122 | |
a14ed312 | 123 | static void overlay_invalidate_all (void); |
c906108c | 124 | |
a14ed312 | 125 | static int overlay_is_mapped (struct obj_section *); |
c906108c | 126 | |
a14ed312 | 127 | void list_overlays_command (char *, int); |
c906108c | 128 | |
a14ed312 | 129 | void map_overlay_command (char *, int); |
c906108c | 130 | |
a14ed312 | 131 | void unmap_overlay_command (char *, int); |
c906108c | 132 | |
a14ed312 | 133 | static void overlay_auto_command (char *, int); |
c906108c | 134 | |
a14ed312 | 135 | static void overlay_manual_command (char *, int); |
c906108c | 136 | |
a14ed312 | 137 | static void overlay_off_command (char *, int); |
c906108c | 138 | |
a14ed312 | 139 | static void overlay_load_command (char *, int); |
c906108c | 140 | |
a14ed312 | 141 | static void overlay_command (char *, int); |
c906108c | 142 | |
a14ed312 | 143 | static void simple_free_overlay_table (void); |
c906108c | 144 | |
a14ed312 | 145 | static void read_target_long_array (CORE_ADDR, unsigned int *, int); |
c906108c | 146 | |
a14ed312 | 147 | static int simple_read_overlay_table (void); |
c906108c | 148 | |
a14ed312 | 149 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 150 | |
a14ed312 | 151 | static void add_filename_language (char *ext, enum language lang); |
392a587b | 152 | |
a14ed312 | 153 | static void set_ext_lang_command (char *args, int from_tty); |
392a587b | 154 | |
a14ed312 | 155 | static void info_ext_lang_command (char *args, int from_tty); |
392a587b | 156 | |
5b5d99cf JB |
157 | static char *find_separate_debug_file (struct objfile *objfile); |
158 | ||
a14ed312 | 159 | static void init_filename_language_table (void); |
392a587b | 160 | |
a14ed312 | 161 | void _initialize_symfile (void); |
c906108c SS |
162 | |
163 | /* List of all available sym_fns. On gdb startup, each object file reader | |
164 | calls add_symtab_fns() to register information on each format it is | |
165 | prepared to read. */ | |
166 | ||
167 | static struct sym_fns *symtab_fns = NULL; | |
168 | ||
169 | /* Flag for whether user will be reloading symbols multiple times. | |
170 | Defaults to ON for VxWorks, otherwise OFF. */ | |
171 | ||
172 | #ifdef SYMBOL_RELOADING_DEFAULT | |
173 | int symbol_reloading = SYMBOL_RELOADING_DEFAULT; | |
174 | #else | |
175 | int symbol_reloading = 0; | |
176 | #endif | |
177 | ||
b7209cb4 FF |
178 | /* If non-zero, shared library symbols will be added automatically |
179 | when the inferior is created, new libraries are loaded, or when | |
180 | attaching to the inferior. This is almost always what users will | |
181 | want to have happen; but for very large programs, the startup time | |
182 | will be excessive, and so if this is a problem, the user can clear | |
183 | this flag and then add the shared library symbols as needed. Note | |
184 | that there is a potential for confusion, since if the shared | |
c906108c | 185 | library symbols are not loaded, commands like "info fun" will *not* |
b7209cb4 | 186 | report all the functions that are actually present. */ |
c906108c SS |
187 | |
188 | int auto_solib_add = 1; | |
b7209cb4 FF |
189 | |
190 | /* For systems that support it, a threshold size in megabytes. If | |
191 | automatically adding a new library's symbol table to those already | |
192 | known to the debugger would cause the total shared library symbol | |
193 | size to exceed this threshhold, then the shlib's symbols are not | |
194 | added. The threshold is ignored if the user explicitly asks for a | |
195 | shlib to be added, such as when using the "sharedlibrary" | |
196 | command. */ | |
197 | ||
198 | int auto_solib_limit; | |
c906108c | 199 | \f |
c5aa993b | 200 | |
c906108c SS |
201 | /* Since this function is called from within qsort, in an ANSI environment |
202 | it must conform to the prototype for qsort, which specifies that the | |
203 | comparison function takes two "void *" pointers. */ | |
204 | ||
205 | static int | |
0cd64fe2 | 206 | compare_symbols (const void *s1p, const void *s2p) |
c906108c SS |
207 | { |
208 | register struct symbol **s1, **s2; | |
209 | ||
210 | s1 = (struct symbol **) s1p; | |
211 | s2 = (struct symbol **) s2p; | |
494b7ec9 | 212 | return (strcmp (SYMBOL_SOURCE_NAME (*s1), SYMBOL_SOURCE_NAME (*s2))); |
c906108c SS |
213 | } |
214 | ||
215 | /* | |
216 | ||
c5aa993b | 217 | LOCAL FUNCTION |
c906108c | 218 | |
c5aa993b | 219 | compare_psymbols -- compare two partial symbols by name |
c906108c | 220 | |
c5aa993b | 221 | DESCRIPTION |
c906108c | 222 | |
c5aa993b JM |
223 | Given pointers to pointers to two partial symbol table entries, |
224 | compare them by name and return -N, 0, or +N (ala strcmp). | |
225 | Typically used by sorting routines like qsort(). | |
c906108c | 226 | |
c5aa993b | 227 | NOTES |
c906108c | 228 | |
c5aa993b JM |
229 | Does direct compare of first two characters before punting |
230 | and passing to strcmp for longer compares. Note that the | |
231 | original version had a bug whereby two null strings or two | |
232 | identically named one character strings would return the | |
233 | comparison of memory following the null byte. | |
c906108c SS |
234 | |
235 | */ | |
236 | ||
237 | static int | |
0cd64fe2 | 238 | compare_psymbols (const void *s1p, const void *s2p) |
c906108c | 239 | { |
fba7f19c EZ |
240 | register struct partial_symbol **s1, **s2; |
241 | register char *st1, *st2; | |
242 | ||
243 | s1 = (struct partial_symbol **) s1p; | |
244 | s2 = (struct partial_symbol **) s2p; | |
245 | st1 = SYMBOL_SOURCE_NAME (*s1); | |
246 | st2 = SYMBOL_SOURCE_NAME (*s2); | |
247 | ||
c906108c SS |
248 | |
249 | if ((st1[0] - st2[0]) || !st1[0]) | |
250 | { | |
251 | return (st1[0] - st2[0]); | |
252 | } | |
253 | else if ((st1[1] - st2[1]) || !st1[1]) | |
254 | { | |
255 | return (st1[1] - st2[1]); | |
256 | } | |
257 | else | |
258 | { | |
c5aa993b | 259 | return (strcmp (st1, st2)); |
c906108c SS |
260 | } |
261 | } | |
262 | ||
263 | void | |
fba45db2 | 264 | sort_pst_symbols (struct partial_symtab *pst) |
c906108c SS |
265 | { |
266 | /* Sort the global list; don't sort the static list */ | |
267 | ||
c5aa993b JM |
268 | qsort (pst->objfile->global_psymbols.list + pst->globals_offset, |
269 | pst->n_global_syms, sizeof (struct partial_symbol *), | |
c906108c SS |
270 | compare_psymbols); |
271 | } | |
272 | ||
273 | /* Call sort_block_syms to sort alphabetically the symbols of one block. */ | |
274 | ||
275 | void | |
fba45db2 | 276 | sort_block_syms (register struct block *b) |
c906108c SS |
277 | { |
278 | qsort (&BLOCK_SYM (b, 0), BLOCK_NSYMS (b), | |
279 | sizeof (struct symbol *), compare_symbols); | |
280 | } | |
281 | ||
282 | /* Call sort_symtab_syms to sort alphabetically | |
283 | the symbols of each block of one symtab. */ | |
284 | ||
285 | void | |
fba45db2 | 286 | sort_symtab_syms (register struct symtab *s) |
c906108c SS |
287 | { |
288 | register struct blockvector *bv; | |
289 | int nbl; | |
290 | int i; | |
291 | register struct block *b; | |
292 | ||
293 | if (s == 0) | |
294 | return; | |
295 | bv = BLOCKVECTOR (s); | |
296 | nbl = BLOCKVECTOR_NBLOCKS (bv); | |
297 | for (i = 0; i < nbl; i++) | |
298 | { | |
299 | b = BLOCKVECTOR_BLOCK (bv, i); | |
300 | if (BLOCK_SHOULD_SORT (b)) | |
301 | sort_block_syms (b); | |
302 | } | |
303 | } | |
304 | ||
305 | /* Make a null terminated copy of the string at PTR with SIZE characters in | |
306 | the obstack pointed to by OBSTACKP . Returns the address of the copy. | |
307 | Note that the string at PTR does not have to be null terminated, I.E. it | |
308 | may be part of a larger string and we are only saving a substring. */ | |
309 | ||
310 | char * | |
63ca651f | 311 | obsavestring (const char *ptr, int size, struct obstack *obstackp) |
c906108c SS |
312 | { |
313 | register char *p = (char *) obstack_alloc (obstackp, size + 1); | |
314 | /* Open-coded memcpy--saves function call time. These strings are usually | |
315 | short. FIXME: Is this really still true with a compiler that can | |
316 | inline memcpy? */ | |
317 | { | |
63ca651f | 318 | register const char *p1 = ptr; |
c906108c | 319 | register char *p2 = p; |
63ca651f | 320 | const char *end = ptr + size; |
c906108c SS |
321 | while (p1 != end) |
322 | *p2++ = *p1++; | |
323 | } | |
324 | p[size] = 0; | |
325 | return p; | |
326 | } | |
327 | ||
328 | /* Concatenate strings S1, S2 and S3; return the new string. Space is found | |
329 | in the obstack pointed to by OBSTACKP. */ | |
330 | ||
331 | char * | |
fba45db2 KB |
332 | obconcat (struct obstack *obstackp, const char *s1, const char *s2, |
333 | const char *s3) | |
c906108c SS |
334 | { |
335 | register int len = strlen (s1) + strlen (s2) + strlen (s3) + 1; | |
336 | register char *val = (char *) obstack_alloc (obstackp, len); | |
337 | strcpy (val, s1); | |
338 | strcat (val, s2); | |
339 | strcat (val, s3); | |
340 | return val; | |
341 | } | |
342 | ||
343 | /* True if we are nested inside psymtab_to_symtab. */ | |
344 | ||
345 | int currently_reading_symtab = 0; | |
346 | ||
347 | static void | |
fba45db2 | 348 | decrement_reading_symtab (void *dummy) |
c906108c SS |
349 | { |
350 | currently_reading_symtab--; | |
351 | } | |
352 | ||
353 | /* Get the symbol table that corresponds to a partial_symtab. | |
354 | This is fast after the first time you do it. In fact, there | |
355 | is an even faster macro PSYMTAB_TO_SYMTAB that does the fast | |
356 | case inline. */ | |
357 | ||
358 | struct symtab * | |
fba45db2 | 359 | psymtab_to_symtab (register struct partial_symtab *pst) |
c906108c SS |
360 | { |
361 | /* If it's been looked up before, return it. */ | |
362 | if (pst->symtab) | |
363 | return pst->symtab; | |
364 | ||
365 | /* If it has not yet been read in, read it. */ | |
366 | if (!pst->readin) | |
c5aa993b | 367 | { |
c906108c SS |
368 | struct cleanup *back_to = make_cleanup (decrement_reading_symtab, NULL); |
369 | currently_reading_symtab++; | |
370 | (*pst->read_symtab) (pst); | |
371 | do_cleanups (back_to); | |
372 | } | |
373 | ||
374 | return pst->symtab; | |
375 | } | |
376 | ||
377 | /* Initialize entry point information for this objfile. */ | |
378 | ||
379 | void | |
fba45db2 | 380 | init_entry_point_info (struct objfile *objfile) |
c906108c SS |
381 | { |
382 | /* Save startup file's range of PC addresses to help blockframe.c | |
383 | decide where the bottom of the stack is. */ | |
384 | ||
c5aa993b | 385 | if (bfd_get_file_flags (objfile->obfd) & EXEC_P) |
c906108c SS |
386 | { |
387 | /* Executable file -- record its entry point so we'll recognize | |
c5aa993b JM |
388 | the startup file because it contains the entry point. */ |
389 | objfile->ei.entry_point = bfd_get_start_address (objfile->obfd); | |
c906108c SS |
390 | } |
391 | else | |
392 | { | |
393 | /* Examination of non-executable.o files. Short-circuit this stuff. */ | |
c5aa993b | 394 | objfile->ei.entry_point = INVALID_ENTRY_POINT; |
c906108c | 395 | } |
c5aa993b JM |
396 | objfile->ei.entry_file_lowpc = INVALID_ENTRY_LOWPC; |
397 | objfile->ei.entry_file_highpc = INVALID_ENTRY_HIGHPC; | |
398 | objfile->ei.entry_func_lowpc = INVALID_ENTRY_LOWPC; | |
399 | objfile->ei.entry_func_highpc = INVALID_ENTRY_HIGHPC; | |
400 | objfile->ei.main_func_lowpc = INVALID_ENTRY_LOWPC; | |
401 | objfile->ei.main_func_highpc = INVALID_ENTRY_HIGHPC; | |
c906108c SS |
402 | } |
403 | ||
404 | /* Get current entry point address. */ | |
405 | ||
406 | CORE_ADDR | |
fba45db2 | 407 | entry_point_address (void) |
c906108c SS |
408 | { |
409 | return symfile_objfile ? symfile_objfile->ei.entry_point : 0; | |
410 | } | |
411 | ||
412 | /* Remember the lowest-addressed loadable section we've seen. | |
413 | This function is called via bfd_map_over_sections. | |
414 | ||
415 | In case of equal vmas, the section with the largest size becomes the | |
416 | lowest-addressed loadable section. | |
417 | ||
418 | If the vmas and sizes are equal, the last section is considered the | |
419 | lowest-addressed loadable section. */ | |
420 | ||
421 | void | |
4efb68b1 | 422 | find_lowest_section (bfd *abfd, asection *sect, void *obj) |
c906108c | 423 | { |
c5aa993b | 424 | asection **lowest = (asection **) obj; |
c906108c SS |
425 | |
426 | if (0 == (bfd_get_section_flags (abfd, sect) & SEC_LOAD)) | |
427 | return; | |
428 | if (!*lowest) | |
429 | *lowest = sect; /* First loadable section */ | |
430 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
431 | *lowest = sect; /* A lower loadable section */ | |
432 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
433 | && (bfd_section_size (abfd, (*lowest)) | |
434 | <= bfd_section_size (abfd, sect))) | |
435 | *lowest = sect; | |
436 | } | |
437 | ||
62557bbc KB |
438 | |
439 | /* Build (allocate and populate) a section_addr_info struct from | |
440 | an existing section table. */ | |
441 | ||
442 | extern struct section_addr_info * | |
443 | build_section_addr_info_from_section_table (const struct section_table *start, | |
444 | const struct section_table *end) | |
445 | { | |
446 | struct section_addr_info *sap; | |
447 | const struct section_table *stp; | |
448 | int oidx; | |
449 | ||
450 | sap = xmalloc (sizeof (struct section_addr_info)); | |
451 | memset (sap, 0, sizeof (struct section_addr_info)); | |
452 | ||
453 | for (stp = start, oidx = 0; stp != end; stp++) | |
454 | { | |
fbd35540 MS |
455 | if (bfd_get_section_flags (stp->bfd, |
456 | stp->the_bfd_section) & (SEC_ALLOC | SEC_LOAD) | |
62557bbc KB |
457 | && oidx < MAX_SECTIONS) |
458 | { | |
459 | sap->other[oidx].addr = stp->addr; | |
fbd35540 MS |
460 | sap->other[oidx].name |
461 | = xstrdup (bfd_section_name (stp->bfd, stp->the_bfd_section)); | |
62557bbc KB |
462 | sap->other[oidx].sectindex = stp->the_bfd_section->index; |
463 | oidx++; | |
464 | } | |
465 | } | |
466 | ||
467 | return sap; | |
468 | } | |
469 | ||
470 | ||
471 | /* Free all memory allocated by build_section_addr_info_from_section_table. */ | |
472 | ||
473 | extern void | |
474 | free_section_addr_info (struct section_addr_info *sap) | |
475 | { | |
476 | int idx; | |
477 | ||
478 | for (idx = 0; idx < MAX_SECTIONS; idx++) | |
479 | if (sap->other[idx].name) | |
b8c9b27d KB |
480 | xfree (sap->other[idx].name); |
481 | xfree (sap); | |
62557bbc KB |
482 | } |
483 | ||
484 | ||
e8289572 JB |
485 | /* Initialize OBJFILE's sect_index_* members. */ |
486 | static void | |
487 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 488 | { |
e8289572 | 489 | asection *sect; |
c906108c | 490 | int i; |
e8289572 | 491 | |
b8fbeb18 EZ |
492 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
493 | if (sect) | |
494 | objfile->sect_index_text = sect->index; | |
495 | ||
496 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
497 | if (sect) | |
498 | objfile->sect_index_data = sect->index; | |
499 | ||
500 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
501 | if (sect) | |
502 | objfile->sect_index_bss = sect->index; | |
503 | ||
504 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
505 | if (sect) | |
506 | objfile->sect_index_rodata = sect->index; | |
507 | ||
bbcd32ad FF |
508 | /* This is where things get really weird... We MUST have valid |
509 | indices for the various sect_index_* members or gdb will abort. | |
510 | So if for example, there is no ".text" section, we have to | |
511 | accomodate that. Except when explicitly adding symbol files at | |
512 | some address, section_offsets contains nothing but zeros, so it | |
513 | doesn't matter which slot in section_offsets the individual | |
514 | sect_index_* members index into. So if they are all zero, it is | |
515 | safe to just point all the currently uninitialized indices to the | |
516 | first slot. */ | |
517 | ||
518 | for (i = 0; i < objfile->num_sections; i++) | |
519 | { | |
520 | if (ANOFFSET (objfile->section_offsets, i) != 0) | |
521 | { | |
522 | break; | |
523 | } | |
524 | } | |
525 | if (i == objfile->num_sections) | |
526 | { | |
527 | if (objfile->sect_index_text == -1) | |
528 | objfile->sect_index_text = 0; | |
529 | if (objfile->sect_index_data == -1) | |
530 | objfile->sect_index_data = 0; | |
531 | if (objfile->sect_index_bss == -1) | |
532 | objfile->sect_index_bss = 0; | |
533 | if (objfile->sect_index_rodata == -1) | |
534 | objfile->sect_index_rodata = 0; | |
535 | } | |
b8fbeb18 | 536 | } |
c906108c | 537 | |
e8289572 JB |
538 | |
539 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
540 | of how to represent it for fast symbol reading. This is the default | |
541 | version of the sym_fns.sym_offsets function for symbol readers that | |
542 | don't need to do anything special. It allocates a section_offsets table | |
543 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
544 | ||
545 | void | |
546 | default_symfile_offsets (struct objfile *objfile, | |
547 | struct section_addr_info *addrs) | |
548 | { | |
549 | int i; | |
550 | ||
551 | objfile->num_sections = SECT_OFF_MAX; | |
552 | objfile->section_offsets = (struct section_offsets *) | |
553 | obstack_alloc (&objfile->psymbol_obstack, SIZEOF_SECTION_OFFSETS); | |
554 | memset (objfile->section_offsets, 0, SIZEOF_SECTION_OFFSETS); | |
555 | ||
556 | /* Now calculate offsets for section that were specified by the | |
557 | caller. */ | |
558 | for (i = 0; i < MAX_SECTIONS && addrs->other[i].name; i++) | |
559 | { | |
560 | struct other_sections *osp ; | |
561 | ||
562 | osp = &addrs->other[i] ; | |
563 | if (osp->addr == 0) | |
564 | continue; | |
565 | ||
566 | /* Record all sections in offsets */ | |
567 | /* The section_offsets in the objfile are here filled in using | |
568 | the BFD index. */ | |
569 | (objfile->section_offsets)->offsets[osp->sectindex] = osp->addr; | |
570 | } | |
571 | ||
572 | /* Remember the bfd indexes for the .text, .data, .bss and | |
573 | .rodata sections. */ | |
574 | init_objfile_sect_indices (objfile); | |
575 | } | |
576 | ||
577 | ||
c906108c SS |
578 | /* Process a symbol file, as either the main file or as a dynamically |
579 | loaded file. | |
580 | ||
96baa820 JM |
581 | OBJFILE is where the symbols are to be read from. |
582 | ||
7e8580c1 JB |
583 | ADDRS is the list of section load addresses. If the user has given |
584 | an 'add-symbol-file' command, then this is the list of offsets and | |
585 | addresses he or she provided as arguments to the command; or, if | |
586 | we're handling a shared library, these are the actual addresses the | |
587 | sections are loaded at, according to the inferior's dynamic linker | |
588 | (as gleaned by GDB's shared library code). We convert each address | |
589 | into an offset from the section VMA's as it appears in the object | |
590 | file, and then call the file's sym_offsets function to convert this | |
591 | into a format-specific offset table --- a `struct section_offsets'. | |
592 | If ADDRS is non-zero, OFFSETS must be zero. | |
593 | ||
594 | OFFSETS is a table of section offsets already in the right | |
595 | format-specific representation. NUM_OFFSETS is the number of | |
596 | elements present in OFFSETS->offsets. If OFFSETS is non-zero, we | |
597 | assume this is the proper table the call to sym_offsets described | |
598 | above would produce. Instead of calling sym_offsets, we just dump | |
599 | it right into objfile->section_offsets. (When we're re-reading | |
600 | symbols from an objfile, we don't have the original load address | |
601 | list any more; all we have is the section offset table.) If | |
602 | OFFSETS is non-zero, ADDRS must be zero. | |
96baa820 JM |
603 | |
604 | MAINLINE is nonzero if this is the main symbol file, or zero if | |
605 | it's an extra symbol file such as dynamically loaded code. | |
606 | ||
607 | VERBO is nonzero if the caller has printed a verbose message about | |
608 | the symbol reading (and complaints can be more terse about it). */ | |
c906108c SS |
609 | |
610 | void | |
7e8580c1 JB |
611 | syms_from_objfile (struct objfile *objfile, |
612 | struct section_addr_info *addrs, | |
613 | struct section_offsets *offsets, | |
614 | int num_offsets, | |
615 | int mainline, | |
616 | int verbo) | |
c906108c | 617 | { |
2acceee2 JM |
618 | asection *lower_sect; |
619 | asection *sect; | |
620 | CORE_ADDR lower_offset; | |
621 | struct section_addr_info local_addr; | |
c906108c | 622 | struct cleanup *old_chain; |
2acceee2 JM |
623 | int i; |
624 | ||
7e8580c1 | 625 | gdb_assert (! (addrs && offsets)); |
2acceee2 | 626 | |
7e8580c1 JB |
627 | /* If ADDRS and OFFSETS are both NULL, put together a dummy address |
628 | list. We now establish the convention that an addr of zero means | |
629 | no load address was specified. */ | |
630 | if (! addrs && ! offsets) | |
2acceee2 JM |
631 | { |
632 | memset (&local_addr, 0, sizeof (local_addr)); | |
633 | addrs = &local_addr; | |
634 | } | |
c906108c | 635 | |
7e8580c1 JB |
636 | /* Now either addrs or offsets is non-zero. */ |
637 | ||
c906108c SS |
638 | init_entry_point_info (objfile); |
639 | find_sym_fns (objfile); | |
640 | ||
75245b24 MS |
641 | if (objfile->sf == NULL) |
642 | return; /* No symbols. */ | |
643 | ||
c906108c SS |
644 | /* Make sure that partially constructed symbol tables will be cleaned up |
645 | if an error occurs during symbol reading. */ | |
74b7792f | 646 | old_chain = make_cleanup_free_objfile (objfile); |
c906108c | 647 | |
c5aa993b | 648 | if (mainline) |
c906108c SS |
649 | { |
650 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 651 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 652 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
653 | |
654 | /* Since no error yet, throw away the old symbol table. */ | |
655 | ||
656 | if (symfile_objfile != NULL) | |
657 | { | |
658 | free_objfile (symfile_objfile); | |
659 | symfile_objfile = NULL; | |
660 | } | |
661 | ||
662 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
663 | If the user wants to get rid of them, they should do "symbol-file" |
664 | without arguments first. Not sure this is the best behavior | |
665 | (PR 2207). */ | |
c906108c | 666 | |
c5aa993b | 667 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
668 | } |
669 | ||
670 | /* Convert addr into an offset rather than an absolute address. | |
671 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 672 | and assume that <addr> is where that got loaded. |
c906108c | 673 | |
53a5351d JM |
674 | We no longer warn if the lowest section is not a text segment (as |
675 | happens for the PA64 port. */ | |
e7cf9df1 | 676 | if (!mainline) |
c906108c | 677 | { |
2acceee2 JM |
678 | /* Find lowest loadable section to be used as starting point for |
679 | continguous sections. FIXME!! won't work without call to find | |
680 | .text first, but this assumes text is lowest section. */ | |
681 | lower_sect = bfd_get_section_by_name (objfile->obfd, ".text"); | |
682 | if (lower_sect == NULL) | |
c906108c | 683 | bfd_map_over_sections (objfile->obfd, find_lowest_section, |
4efb68b1 | 684 | &lower_sect); |
2acceee2 | 685 | if (lower_sect == NULL) |
c906108c SS |
686 | warning ("no loadable sections found in added symbol-file %s", |
687 | objfile->name); | |
b8fbeb18 EZ |
688 | else |
689 | if ((bfd_get_section_flags (objfile->obfd, lower_sect) & SEC_CODE) == 0) | |
690 | warning ("Lowest section in %s is %s at %s", | |
691 | objfile->name, | |
692 | bfd_section_name (objfile->obfd, lower_sect), | |
693 | paddr (bfd_section_vma (objfile->obfd, lower_sect))); | |
2acceee2 JM |
694 | if (lower_sect != NULL) |
695 | lower_offset = bfd_section_vma (objfile->obfd, lower_sect); | |
696 | else | |
697 | lower_offset = 0; | |
698 | ||
13de58df | 699 | /* Calculate offsets for the loadable sections. |
2acceee2 JM |
700 | FIXME! Sections must be in order of increasing loadable section |
701 | so that contiguous sections can use the lower-offset!!! | |
702 | ||
13de58df JB |
703 | Adjust offsets if the segments are not contiguous. |
704 | If the section is contiguous, its offset should be set to | |
2acceee2 JM |
705 | the offset of the highest loadable section lower than it |
706 | (the loadable section directly below it in memory). | |
707 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
708 | ||
13de58df | 709 | /* Calculate offsets for sections. */ |
7e8580c1 JB |
710 | if (addrs) |
711 | for (i=0 ; i < MAX_SECTIONS && addrs->other[i].name; i++) | |
712 | { | |
713 | if (addrs->other[i].addr != 0) | |
714 | { | |
715 | sect = bfd_get_section_by_name (objfile->obfd, | |
716 | addrs->other[i].name); | |
717 | if (sect) | |
718 | { | |
719 | addrs->other[i].addr | |
720 | -= bfd_section_vma (objfile->obfd, sect); | |
721 | lower_offset = addrs->other[i].addr; | |
722 | /* This is the index used by BFD. */ | |
723 | addrs->other[i].sectindex = sect->index ; | |
724 | } | |
725 | else | |
726 | { | |
727 | warning ("section %s not found in %s", | |
728 | addrs->other[i].name, | |
729 | objfile->name); | |
730 | addrs->other[i].addr = 0; | |
731 | } | |
732 | } | |
733 | else | |
734 | addrs->other[i].addr = lower_offset; | |
735 | } | |
c906108c SS |
736 | } |
737 | ||
738 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
739 | appear for this new file, and record how verbose to be, then do the | |
740 | initial symbol reading for this file. */ | |
741 | ||
c5aa993b | 742 | (*objfile->sf->sym_init) (objfile); |
b9caf505 | 743 | clear_complaints (&symfile_complaints, 1, verbo); |
c906108c | 744 | |
7e8580c1 JB |
745 | if (addrs) |
746 | (*objfile->sf->sym_offsets) (objfile, addrs); | |
747 | else | |
748 | { | |
749 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_offsets); | |
750 | ||
751 | /* Just copy in the offset table directly as given to us. */ | |
752 | objfile->num_sections = num_offsets; | |
753 | objfile->section_offsets | |
754 | = ((struct section_offsets *) | |
755 | obstack_alloc (&objfile->psymbol_obstack, size)); | |
756 | memcpy (objfile->section_offsets, offsets, size); | |
757 | ||
758 | init_objfile_sect_indices (objfile); | |
759 | } | |
c906108c SS |
760 | |
761 | #ifndef IBM6000_TARGET | |
762 | /* This is a SVR4/SunOS specific hack, I think. In any event, it | |
763 | screws RS/6000. sym_offsets should be doing this sort of thing, | |
764 | because it knows the mapping between bfd sections and | |
765 | section_offsets. */ | |
766 | /* This is a hack. As far as I can tell, section offsets are not | |
767 | target dependent. They are all set to addr with a couple of | |
768 | exceptions. The exceptions are sysvr4 shared libraries, whose | |
769 | offsets are kept in solib structures anyway and rs6000 xcoff | |
770 | which handles shared libraries in a completely unique way. | |
771 | ||
772 | Section offsets are built similarly, except that they are built | |
773 | by adding addr in all cases because there is no clear mapping | |
774 | from section_offsets into actual sections. Note that solib.c | |
96baa820 | 775 | has a different algorithm for finding section offsets. |
c906108c SS |
776 | |
777 | These should probably all be collapsed into some target | |
778 | independent form of shared library support. FIXME. */ | |
779 | ||
2acceee2 | 780 | if (addrs) |
c906108c SS |
781 | { |
782 | struct obj_section *s; | |
783 | ||
2acceee2 JM |
784 | /* Map section offsets in "addr" back to the object's |
785 | sections by comparing the section names with bfd's | |
786 | section names. Then adjust the section address by | |
787 | the offset. */ /* for gdb/13815 */ | |
788 | ||
96baa820 | 789 | ALL_OBJFILE_OSECTIONS (objfile, s) |
c906108c | 790 | { |
2acceee2 JM |
791 | CORE_ADDR s_addr = 0; |
792 | int i; | |
793 | ||
62557bbc KB |
794 | for (i = 0; |
795 | !s_addr && i < MAX_SECTIONS && addrs->other[i].name; | |
796 | i++) | |
fbd35540 MS |
797 | if (strcmp (bfd_section_name (s->objfile->obfd, |
798 | s->the_bfd_section), | |
799 | addrs->other[i].name) == 0) | |
2acceee2 JM |
800 | s_addr = addrs->other[i].addr; /* end added for gdb/13815 */ |
801 | ||
c906108c | 802 | s->addr -= s->offset; |
2acceee2 | 803 | s->addr += s_addr; |
c906108c | 804 | s->endaddr -= s->offset; |
2acceee2 JM |
805 | s->endaddr += s_addr; |
806 | s->offset += s_addr; | |
c906108c SS |
807 | } |
808 | } | |
809 | #endif /* not IBM6000_TARGET */ | |
810 | ||
96baa820 | 811 | (*objfile->sf->sym_read) (objfile, mainline); |
c906108c | 812 | |
c906108c SS |
813 | /* Don't allow char * to have a typename (else would get caddr_t). |
814 | Ditto void *. FIXME: Check whether this is now done by all the | |
815 | symbol readers themselves (many of them now do), and if so remove | |
816 | it from here. */ | |
817 | ||
818 | TYPE_NAME (lookup_pointer_type (builtin_type_char)) = 0; | |
819 | TYPE_NAME (lookup_pointer_type (builtin_type_void)) = 0; | |
820 | ||
821 | /* Mark the objfile has having had initial symbol read attempted. Note | |
822 | that this does not mean we found any symbols... */ | |
823 | ||
c5aa993b | 824 | objfile->flags |= OBJF_SYMS; |
c906108c SS |
825 | |
826 | /* Discard cleanups as symbol reading was successful. */ | |
827 | ||
828 | discard_cleanups (old_chain); | |
829 | ||
96baa820 | 830 | /* Call this after reading in a new symbol table to give target |
38c2ef12 | 831 | dependent code a crack at the new symbols. For instance, this |
96baa820 JM |
832 | could be used to update the values of target-specific symbols GDB |
833 | needs to keep track of (such as _sigtramp, or whatever). */ | |
c906108c SS |
834 | |
835 | TARGET_SYMFILE_POSTREAD (objfile); | |
836 | } | |
837 | ||
838 | /* Perform required actions after either reading in the initial | |
839 | symbols for a new objfile, or mapping in the symbols from a reusable | |
840 | objfile. */ | |
c5aa993b | 841 | |
c906108c | 842 | void |
fba45db2 | 843 | new_symfile_objfile (struct objfile *objfile, int mainline, int verbo) |
c906108c SS |
844 | { |
845 | ||
846 | /* If this is the main symbol file we have to clean up all users of the | |
847 | old main symbol file. Otherwise it is sufficient to fixup all the | |
848 | breakpoints that may have been redefined by this symbol file. */ | |
849 | if (mainline) | |
850 | { | |
851 | /* OK, make it the "real" symbol file. */ | |
852 | symfile_objfile = objfile; | |
853 | ||
854 | clear_symtab_users (); | |
855 | } | |
856 | else | |
857 | { | |
858 | breakpoint_re_set (); | |
859 | } | |
860 | ||
861 | /* We're done reading the symbol file; finish off complaints. */ | |
b9caf505 | 862 | clear_complaints (&symfile_complaints, 0, verbo); |
c906108c SS |
863 | } |
864 | ||
865 | /* Process a symbol file, as either the main file or as a dynamically | |
866 | loaded file. | |
867 | ||
868 | NAME is the file name (which will be tilde-expanded and made | |
869 | absolute herein) (but we don't free or modify NAME itself). | |
7904e09f JB |
870 | |
871 | FROM_TTY says how verbose to be. | |
872 | ||
873 | MAINLINE specifies whether this is the main symbol file, or whether | |
874 | it's an extra symbol file such as dynamically loaded code. | |
875 | ||
876 | ADDRS, OFFSETS, and NUM_OFFSETS are as described for | |
877 | syms_from_objfile, above. ADDRS is ignored when MAINLINE is | |
878 | non-zero. | |
c906108c | 879 | |
c906108c SS |
880 | Upon success, returns a pointer to the objfile that was added. |
881 | Upon failure, jumps back to command level (never returns). */ | |
7904e09f JB |
882 | static struct objfile * |
883 | symbol_file_add_with_addrs_or_offsets (char *name, int from_tty, | |
884 | struct section_addr_info *addrs, | |
885 | struct section_offsets *offsets, | |
886 | int num_offsets, | |
887 | int mainline, int flags) | |
c906108c SS |
888 | { |
889 | struct objfile *objfile; | |
890 | struct partial_symtab *psymtab; | |
5b5d99cf | 891 | char *debugfile; |
c906108c | 892 | bfd *abfd; |
5b5d99cf JB |
893 | struct section_addr_info orig_addrs; |
894 | ||
895 | if (addrs) | |
896 | orig_addrs = *addrs; | |
c906108c SS |
897 | |
898 | /* Open a bfd for the file, and give user a chance to burp if we'd be | |
899 | interactively wiping out any existing symbols. */ | |
900 | ||
901 | abfd = symfile_bfd_open (name); | |
902 | ||
903 | if ((have_full_symbols () || have_partial_symbols ()) | |
904 | && mainline | |
905 | && from_tty | |
906 | && !query ("Load new symbol table from \"%s\"? ", name)) | |
c5aa993b | 907 | error ("Not confirmed."); |
c906108c | 908 | |
2df3850c | 909 | objfile = allocate_objfile (abfd, flags); |
c906108c SS |
910 | |
911 | /* If the objfile uses a mapped symbol file, and we have a psymtab for | |
912 | it, then skip reading any symbols at this time. */ | |
913 | ||
c5aa993b | 914 | if ((objfile->flags & OBJF_MAPPED) && (objfile->flags & OBJF_SYMS)) |
c906108c SS |
915 | { |
916 | /* We mapped in an existing symbol table file that already has had | |
c5aa993b JM |
917 | initial symbol reading performed, so we can skip that part. Notify |
918 | the user that instead of reading the symbols, they have been mapped. | |
919 | */ | |
c906108c SS |
920 | if (from_tty || info_verbose) |
921 | { | |
922 | printf_filtered ("Mapped symbols for %s...", name); | |
923 | wrap_here (""); | |
924 | gdb_flush (gdb_stdout); | |
925 | } | |
926 | init_entry_point_info (objfile); | |
927 | find_sym_fns (objfile); | |
928 | } | |
929 | else | |
930 | { | |
931 | /* We either created a new mapped symbol table, mapped an existing | |
c5aa993b JM |
932 | symbol table file which has not had initial symbol reading |
933 | performed, or need to read an unmapped symbol table. */ | |
c906108c SS |
934 | if (from_tty || info_verbose) |
935 | { | |
936 | if (pre_add_symbol_hook) | |
937 | pre_add_symbol_hook (name); | |
938 | else | |
939 | { | |
940 | printf_filtered ("Reading symbols from %s...", name); | |
941 | wrap_here (""); | |
942 | gdb_flush (gdb_stdout); | |
943 | } | |
944 | } | |
7904e09f JB |
945 | syms_from_objfile (objfile, addrs, offsets, num_offsets, |
946 | mainline, from_tty); | |
c906108c SS |
947 | } |
948 | ||
949 | /* We now have at least a partial symbol table. Check to see if the | |
950 | user requested that all symbols be read on initial access via either | |
951 | the gdb startup command line or on a per symbol file basis. Expand | |
952 | all partial symbol tables for this objfile if so. */ | |
953 | ||
2acceee2 | 954 | if ((flags & OBJF_READNOW) || readnow_symbol_files) |
c906108c SS |
955 | { |
956 | if (from_tty || info_verbose) | |
957 | { | |
958 | printf_filtered ("expanding to full symbols..."); | |
959 | wrap_here (""); | |
960 | gdb_flush (gdb_stdout); | |
961 | } | |
962 | ||
c5aa993b | 963 | for (psymtab = objfile->psymtabs; |
c906108c | 964 | psymtab != NULL; |
c5aa993b | 965 | psymtab = psymtab->next) |
c906108c SS |
966 | { |
967 | psymtab_to_symtab (psymtab); | |
968 | } | |
969 | } | |
970 | ||
5b5d99cf JB |
971 | debugfile = find_separate_debug_file (objfile); |
972 | if (debugfile) | |
973 | { | |
5b5d99cf JB |
974 | if (addrs != NULL) |
975 | { | |
976 | objfile->separate_debug_objfile | |
977 | = symbol_file_add (debugfile, from_tty, &orig_addrs, 0, flags); | |
978 | } | |
979 | else | |
980 | { | |
981 | objfile->separate_debug_objfile | |
982 | = symbol_file_add (debugfile, from_tty, NULL, 0, flags); | |
983 | } | |
984 | objfile->separate_debug_objfile->separate_debug_objfile_backlink | |
985 | = objfile; | |
986 | ||
987 | /* Put the separate debug object before the normal one, this is so that | |
988 | usage of the ALL_OBJFILES_SAFE macro will stay safe. */ | |
989 | put_objfile_before (objfile->separate_debug_objfile, objfile); | |
990 | ||
991 | xfree (debugfile); | |
992 | } | |
993 | ||
cb3c37b2 JB |
994 | if (!have_partial_symbols () && !have_full_symbols ()) |
995 | { | |
996 | wrap_here (""); | |
997 | printf_filtered ("(no debugging symbols found)..."); | |
998 | wrap_here (""); | |
999 | } | |
1000 | ||
c906108c SS |
1001 | if (from_tty || info_verbose) |
1002 | { | |
1003 | if (post_add_symbol_hook) | |
c5aa993b | 1004 | post_add_symbol_hook (); |
c906108c | 1005 | else |
c5aa993b JM |
1006 | { |
1007 | printf_filtered ("done.\n"); | |
c5aa993b | 1008 | } |
c906108c SS |
1009 | } |
1010 | ||
481d0f41 JB |
1011 | /* We print some messages regardless of whether 'from_tty || |
1012 | info_verbose' is true, so make sure they go out at the right | |
1013 | time. */ | |
1014 | gdb_flush (gdb_stdout); | |
1015 | ||
109f874e MS |
1016 | if (objfile->sf == NULL) |
1017 | return objfile; /* No symbols. */ | |
1018 | ||
c906108c SS |
1019 | new_symfile_objfile (objfile, mainline, from_tty); |
1020 | ||
11cf8741 JM |
1021 | if (target_new_objfile_hook) |
1022 | target_new_objfile_hook (objfile); | |
c906108c SS |
1023 | |
1024 | return (objfile); | |
1025 | } | |
1026 | ||
7904e09f JB |
1027 | |
1028 | /* Process a symbol file, as either the main file or as a dynamically | |
1029 | loaded file. See symbol_file_add_with_addrs_or_offsets's comments | |
1030 | for details. */ | |
1031 | struct objfile * | |
1032 | symbol_file_add (char *name, int from_tty, struct section_addr_info *addrs, | |
1033 | int mainline, int flags) | |
1034 | { | |
1035 | return symbol_file_add_with_addrs_or_offsets (name, from_tty, addrs, 0, 0, | |
1036 | mainline, flags); | |
1037 | } | |
1038 | ||
1039 | ||
d7db6da9 FN |
1040 | /* Call symbol_file_add() with default values and update whatever is |
1041 | affected by the loading of a new main(). | |
1042 | Used when the file is supplied in the gdb command line | |
1043 | and by some targets with special loading requirements. | |
1044 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
1045 | argument for the switches that can only be specified in the symbol_file | |
1046 | command itself. */ | |
1adeb98a FN |
1047 | |
1048 | void | |
1049 | symbol_file_add_main (char *args, int from_tty) | |
1050 | { | |
d7db6da9 FN |
1051 | symbol_file_add_main_1 (args, from_tty, 0); |
1052 | } | |
1053 | ||
1054 | static void | |
1055 | symbol_file_add_main_1 (char *args, int from_tty, int flags) | |
1056 | { | |
1057 | symbol_file_add (args, from_tty, NULL, 1, flags); | |
1058 | ||
1059 | #ifdef HPUXHPPA | |
1060 | RESET_HP_UX_GLOBALS (); | |
1061 | #endif | |
1062 | ||
1063 | /* Getting new symbols may change our opinion about | |
1064 | what is frameless. */ | |
1065 | reinit_frame_cache (); | |
1066 | ||
1067 | set_initial_language (); | |
1adeb98a FN |
1068 | } |
1069 | ||
1070 | void | |
1071 | symbol_file_clear (int from_tty) | |
1072 | { | |
1073 | if ((have_full_symbols () || have_partial_symbols ()) | |
1074 | && from_tty | |
1075 | && !query ("Discard symbol table from `%s'? ", | |
1076 | symfile_objfile->name)) | |
1077 | error ("Not confirmed."); | |
1078 | free_all_objfiles (); | |
1079 | ||
1080 | /* solib descriptors may have handles to objfiles. Since their | |
1081 | storage has just been released, we'd better wipe the solib | |
1082 | descriptors as well. | |
1083 | */ | |
1084 | #if defined(SOLIB_RESTART) | |
1085 | SOLIB_RESTART (); | |
1086 | #endif | |
1087 | ||
1088 | symfile_objfile = NULL; | |
1089 | if (from_tty) | |
1090 | printf_unfiltered ("No symbol file now.\n"); | |
1091 | #ifdef HPUXHPPA | |
1092 | RESET_HP_UX_GLOBALS (); | |
1093 | #endif | |
1094 | } | |
1095 | ||
5b5d99cf JB |
1096 | static char * |
1097 | get_debug_link_info (struct objfile *objfile, unsigned long *crc32_out) | |
1098 | { | |
1099 | asection *sect; | |
1100 | bfd_size_type debuglink_size; | |
1101 | unsigned long crc32; | |
1102 | char *contents; | |
1103 | int crc_offset; | |
1104 | unsigned char *p; | |
1105 | ||
1106 | sect = bfd_get_section_by_name (objfile->obfd, ".gnu_debuglink"); | |
1107 | ||
1108 | if (sect == NULL) | |
1109 | return NULL; | |
1110 | ||
1111 | debuglink_size = bfd_section_size (objfile->obfd, sect); | |
1112 | ||
1113 | contents = xmalloc (debuglink_size); | |
1114 | bfd_get_section_contents (objfile->obfd, sect, contents, | |
1115 | (file_ptr)0, (bfd_size_type)debuglink_size); | |
1116 | ||
1117 | /* Crc value is stored after the filename, aligned up to 4 bytes. */ | |
1118 | crc_offset = strlen (contents) + 1; | |
1119 | crc_offset = (crc_offset + 3) & ~3; | |
1120 | ||
1121 | crc32 = bfd_get_32 (objfile->obfd, (bfd_byte *) (contents + crc_offset)); | |
1122 | ||
1123 | *crc32_out = crc32; | |
1124 | return contents; | |
1125 | } | |
1126 | ||
1127 | static int | |
1128 | separate_debug_file_exists (const char *name, unsigned long crc) | |
1129 | { | |
1130 | unsigned long file_crc = 0; | |
1131 | int fd; | |
1132 | char buffer[8*1024]; | |
1133 | int count; | |
1134 | ||
1135 | fd = open (name, O_RDONLY | O_BINARY); | |
1136 | if (fd < 0) | |
1137 | return 0; | |
1138 | ||
1139 | while ((count = read (fd, buffer, sizeof (buffer))) > 0) | |
1140 | file_crc = gnu_debuglink_crc32 (file_crc, buffer, count); | |
1141 | ||
1142 | close (fd); | |
1143 | ||
1144 | return crc == file_crc; | |
1145 | } | |
1146 | ||
1147 | static char *debug_file_directory = NULL; | |
1148 | ||
1149 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1150 | #define DEBUG_SUBDIRECTORY ".debug" | |
1151 | #endif | |
1152 | ||
1153 | static char * | |
1154 | find_separate_debug_file (struct objfile *objfile) | |
1155 | { | |
1156 | asection *sect; | |
1157 | char *basename; | |
1158 | char *dir; | |
1159 | char *debugfile; | |
1160 | char *name_copy; | |
1161 | bfd_size_type debuglink_size; | |
1162 | unsigned long crc32; | |
1163 | int i; | |
1164 | ||
1165 | basename = get_debug_link_info (objfile, &crc32); | |
1166 | ||
1167 | if (basename == NULL) | |
1168 | return NULL; | |
1169 | ||
1170 | dir = xstrdup (objfile->name); | |
1171 | ||
fe36c4f4 JB |
1172 | /* Strip off the final filename part, leaving the directory name, |
1173 | followed by a slash. Objfile names should always be absolute and | |
1174 | tilde-expanded, so there should always be a slash in there | |
1175 | somewhere. */ | |
5b5d99cf JB |
1176 | for (i = strlen(dir) - 1; i >= 0; i--) |
1177 | { | |
1178 | if (IS_DIR_SEPARATOR (dir[i])) | |
1179 | break; | |
1180 | } | |
fe36c4f4 | 1181 | gdb_assert (i >= 0 && IS_DIR_SEPARATOR (dir[i])); |
5b5d99cf JB |
1182 | dir[i+1] = '\0'; |
1183 | ||
1184 | debugfile = alloca (strlen (debug_file_directory) + 1 | |
1185 | + strlen (dir) | |
1186 | + strlen (DEBUG_SUBDIRECTORY) | |
1187 | + strlen ("/") | |
1188 | + strlen (basename) | |
1189 | + 1); | |
1190 | ||
1191 | /* First try in the same directory as the original file. */ | |
1192 | strcpy (debugfile, dir); | |
1193 | strcat (debugfile, basename); | |
1194 | ||
1195 | if (separate_debug_file_exists (debugfile, crc32)) | |
1196 | { | |
1197 | xfree (basename); | |
1198 | xfree (dir); | |
1199 | return xstrdup (debugfile); | |
1200 | } | |
1201 | ||
1202 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ | |
1203 | strcpy (debugfile, dir); | |
1204 | strcat (debugfile, DEBUG_SUBDIRECTORY); | |
1205 | strcat (debugfile, "/"); | |
1206 | strcat (debugfile, basename); | |
1207 | ||
1208 | if (separate_debug_file_exists (debugfile, crc32)) | |
1209 | { | |
1210 | xfree (basename); | |
1211 | xfree (dir); | |
1212 | return xstrdup (debugfile); | |
1213 | } | |
1214 | ||
1215 | /* Then try in the global debugfile directory. */ | |
1216 | strcpy (debugfile, debug_file_directory); | |
1217 | strcat (debugfile, "/"); | |
1218 | strcat (debugfile, dir); | |
5b5d99cf JB |
1219 | strcat (debugfile, basename); |
1220 | ||
1221 | if (separate_debug_file_exists (debugfile, crc32)) | |
1222 | { | |
1223 | xfree (basename); | |
1224 | xfree (dir); | |
1225 | return xstrdup (debugfile); | |
1226 | } | |
1227 | ||
1228 | xfree (basename); | |
1229 | xfree (dir); | |
1230 | return NULL; | |
1231 | } | |
1232 | ||
1233 | ||
c906108c SS |
1234 | /* This is the symbol-file command. Read the file, analyze its |
1235 | symbols, and add a struct symtab to a symtab list. The syntax of | |
1236 | the command is rather bizarre--(1) buildargv implements various | |
1237 | quoting conventions which are undocumented and have little or | |
1238 | nothing in common with the way things are quoted (or not quoted) | |
1239 | elsewhere in GDB, (2) options are used, which are not generally | |
1240 | used in GDB (perhaps "set mapped on", "set readnow on" would be | |
1241 | better), (3) the order of options matters, which is contrary to GNU | |
1242 | conventions (because it is confusing and inconvenient). */ | |
4da95fc4 EZ |
1243 | /* Note: ezannoni 2000-04-17. This function used to have support for |
1244 | rombug (see remote-os9k.c). It consisted of a call to target_link() | |
1245 | (target.c) to get the address of the text segment from the target, | |
1246 | and pass that to symbol_file_add(). This is no longer supported. */ | |
c906108c SS |
1247 | |
1248 | void | |
fba45db2 | 1249 | symbol_file_command (char *args, int from_tty) |
c906108c SS |
1250 | { |
1251 | char **argv; | |
1252 | char *name = NULL; | |
c906108c | 1253 | struct cleanup *cleanups; |
2df3850c | 1254 | int flags = OBJF_USERLOADED; |
c906108c SS |
1255 | |
1256 | dont_repeat (); | |
1257 | ||
1258 | if (args == NULL) | |
1259 | { | |
1adeb98a | 1260 | symbol_file_clear (from_tty); |
c906108c SS |
1261 | } |
1262 | else | |
1263 | { | |
1264 | if ((argv = buildargv (args)) == NULL) | |
1265 | { | |
1266 | nomem (0); | |
1267 | } | |
7a292a7a | 1268 | cleanups = make_cleanup_freeargv (argv); |
c906108c SS |
1269 | while (*argv != NULL) |
1270 | { | |
1271 | if (STREQ (*argv, "-mapped")) | |
4da95fc4 EZ |
1272 | flags |= OBJF_MAPPED; |
1273 | else | |
1274 | if (STREQ (*argv, "-readnow")) | |
2acceee2 | 1275 | flags |= OBJF_READNOW; |
4da95fc4 EZ |
1276 | else |
1277 | if (**argv == '-') | |
1278 | error ("unknown option `%s'", *argv); | |
c5aa993b | 1279 | else |
c5aa993b | 1280 | { |
4da95fc4 | 1281 | name = *argv; |
c906108c | 1282 | |
d7db6da9 | 1283 | symbol_file_add_main_1 (name, from_tty, flags); |
4da95fc4 | 1284 | } |
c906108c SS |
1285 | argv++; |
1286 | } | |
1287 | ||
1288 | if (name == NULL) | |
1289 | { | |
1290 | error ("no symbol file name was specified"); | |
1291 | } | |
c906108c SS |
1292 | do_cleanups (cleanups); |
1293 | } | |
1294 | } | |
1295 | ||
1296 | /* Set the initial language. | |
1297 | ||
1298 | A better solution would be to record the language in the psymtab when reading | |
1299 | partial symbols, and then use it (if known) to set the language. This would | |
1300 | be a win for formats that encode the language in an easily discoverable place, | |
1301 | such as DWARF. For stabs, we can jump through hoops looking for specially | |
1302 | named symbols or try to intuit the language from the specific type of stabs | |
1303 | we find, but we can't do that until later when we read in full symbols. | |
1304 | FIXME. */ | |
1305 | ||
1306 | static void | |
fba45db2 | 1307 | set_initial_language (void) |
c906108c SS |
1308 | { |
1309 | struct partial_symtab *pst; | |
c5aa993b | 1310 | enum language lang = language_unknown; |
c906108c SS |
1311 | |
1312 | pst = find_main_psymtab (); | |
1313 | if (pst != NULL) | |
1314 | { | |
c5aa993b | 1315 | if (pst->filename != NULL) |
c906108c | 1316 | { |
c5aa993b JM |
1317 | lang = deduce_language_from_filename (pst->filename); |
1318 | } | |
c906108c SS |
1319 | if (lang == language_unknown) |
1320 | { | |
c5aa993b JM |
1321 | /* Make C the default language */ |
1322 | lang = language_c; | |
c906108c SS |
1323 | } |
1324 | set_language (lang); | |
1325 | expected_language = current_language; /* Don't warn the user */ | |
1326 | } | |
1327 | } | |
1328 | ||
1329 | /* Open file specified by NAME and hand it off to BFD for preliminary | |
1330 | analysis. Result is a newly initialized bfd *, which includes a newly | |
1331 | malloc'd` copy of NAME (tilde-expanded and made absolute). | |
1332 | In case of trouble, error() is called. */ | |
1333 | ||
1334 | bfd * | |
fba45db2 | 1335 | symfile_bfd_open (char *name) |
c906108c SS |
1336 | { |
1337 | bfd *sym_bfd; | |
1338 | int desc; | |
1339 | char *absolute_name; | |
1340 | ||
1341 | ||
1342 | ||
1343 | name = tilde_expand (name); /* Returns 1st new malloc'd copy */ | |
1344 | ||
1345 | /* Look down path for it, allocate 2nd new malloc'd copy. */ | |
1346 | desc = openp (getenv ("PATH"), 1, name, O_RDONLY | O_BINARY, 0, &absolute_name); | |
608506ed | 1347 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
c906108c SS |
1348 | if (desc < 0) |
1349 | { | |
1350 | char *exename = alloca (strlen (name) + 5); | |
1351 | strcat (strcpy (exename, name), ".exe"); | |
1352 | desc = openp (getenv ("PATH"), 1, exename, O_RDONLY | O_BINARY, | |
c5aa993b | 1353 | 0, &absolute_name); |
c906108c SS |
1354 | } |
1355 | #endif | |
1356 | if (desc < 0) | |
1357 | { | |
b8c9b27d | 1358 | make_cleanup (xfree, name); |
c906108c SS |
1359 | perror_with_name (name); |
1360 | } | |
b8c9b27d | 1361 | xfree (name); /* Free 1st new malloc'd copy */ |
c906108c | 1362 | name = absolute_name; /* Keep 2nd malloc'd copy in bfd */ |
c5aa993b | 1363 | /* It'll be freed in free_objfile(). */ |
c906108c SS |
1364 | |
1365 | sym_bfd = bfd_fdopenr (name, gnutarget, desc); | |
1366 | if (!sym_bfd) | |
1367 | { | |
1368 | close (desc); | |
b8c9b27d | 1369 | make_cleanup (xfree, name); |
c906108c SS |
1370 | error ("\"%s\": can't open to read symbols: %s.", name, |
1371 | bfd_errmsg (bfd_get_error ())); | |
1372 | } | |
81a9a963 | 1373 | sym_bfd->cacheable = 1; |
c906108c SS |
1374 | |
1375 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1376 | { | |
1377 | /* FIXME: should be checking for errors from bfd_close (for one thing, | |
c5aa993b JM |
1378 | on error it does not free all the storage associated with the |
1379 | bfd). */ | |
c906108c | 1380 | bfd_close (sym_bfd); /* This also closes desc */ |
b8c9b27d | 1381 | make_cleanup (xfree, name); |
c906108c SS |
1382 | error ("\"%s\": can't read symbols: %s.", name, |
1383 | bfd_errmsg (bfd_get_error ())); | |
1384 | } | |
1385 | return (sym_bfd); | |
1386 | } | |
1387 | ||
0e931cf0 JB |
1388 | /* Return the section index for the given section name. Return -1 if |
1389 | the section was not found. */ | |
1390 | int | |
1391 | get_section_index (struct objfile *objfile, char *section_name) | |
1392 | { | |
1393 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
1394 | if (sect) | |
1395 | return sect->index; | |
1396 | else | |
1397 | return -1; | |
1398 | } | |
1399 | ||
c906108c SS |
1400 | /* Link a new symtab_fns into the global symtab_fns list. Called on gdb |
1401 | startup by the _initialize routine in each object file format reader, | |
1402 | to register information about each format the the reader is prepared | |
1403 | to handle. */ | |
1404 | ||
1405 | void | |
fba45db2 | 1406 | add_symtab_fns (struct sym_fns *sf) |
c906108c SS |
1407 | { |
1408 | sf->next = symtab_fns; | |
1409 | symtab_fns = sf; | |
1410 | } | |
1411 | ||
1412 | ||
1413 | /* Initialize to read symbols from the symbol file sym_bfd. It either | |
1414 | returns or calls error(). The result is an initialized struct sym_fns | |
1415 | in the objfile structure, that contains cached information about the | |
1416 | symbol file. */ | |
1417 | ||
1418 | static void | |
fba45db2 | 1419 | find_sym_fns (struct objfile *objfile) |
c906108c SS |
1420 | { |
1421 | struct sym_fns *sf; | |
c5aa993b JM |
1422 | enum bfd_flavour our_flavour = bfd_get_flavour (objfile->obfd); |
1423 | char *our_target = bfd_get_target (objfile->obfd); | |
c906108c | 1424 | |
75245b24 MS |
1425 | if (our_flavour == bfd_target_srec_flavour |
1426 | || our_flavour == bfd_target_ihex_flavour | |
1427 | || our_flavour == bfd_target_tekhex_flavour) | |
1428 | return; /* No symbols. */ | |
1429 | ||
c906108c SS |
1430 | /* Special kludge for apollo. See dstread.c. */ |
1431 | if (STREQN (our_target, "apollo", 6)) | |
c5aa993b | 1432 | our_flavour = (enum bfd_flavour) -2; |
c906108c | 1433 | |
c5aa993b | 1434 | for (sf = symtab_fns; sf != NULL; sf = sf->next) |
c906108c | 1435 | { |
c5aa993b | 1436 | if (our_flavour == sf->sym_flavour) |
c906108c | 1437 | { |
c5aa993b | 1438 | objfile->sf = sf; |
c906108c SS |
1439 | return; |
1440 | } | |
1441 | } | |
1442 | error ("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown.", | |
c5aa993b | 1443 | bfd_get_target (objfile->obfd)); |
c906108c SS |
1444 | } |
1445 | \f | |
1446 | /* This function runs the load command of our current target. */ | |
1447 | ||
1448 | static void | |
fba45db2 | 1449 | load_command (char *arg, int from_tty) |
c906108c SS |
1450 | { |
1451 | if (arg == NULL) | |
1452 | arg = get_exec_file (1); | |
1453 | target_load (arg, from_tty); | |
2889e661 JB |
1454 | |
1455 | /* After re-loading the executable, we don't really know which | |
1456 | overlays are mapped any more. */ | |
1457 | overlay_cache_invalid = 1; | |
c906108c SS |
1458 | } |
1459 | ||
1460 | /* This version of "load" should be usable for any target. Currently | |
1461 | it is just used for remote targets, not inftarg.c or core files, | |
1462 | on the theory that only in that case is it useful. | |
1463 | ||
1464 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1465 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1466 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1467 | performance compares. */ | |
917317f4 JM |
1468 | |
1469 | static int download_write_size = 512; | |
1470 | static int validate_download = 0; | |
1471 | ||
e4f9b4d5 MS |
1472 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1473 | ||
1474 | static void | |
1475 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1476 | { | |
1477 | bfd_size_type *sum = data; | |
1478 | ||
1479 | *sum += bfd_get_section_size_before_reloc (asec); | |
1480 | } | |
1481 | ||
1482 | /* Opaque data for load_section_callback. */ | |
1483 | struct load_section_data { | |
1484 | unsigned long load_offset; | |
1485 | unsigned long write_count; | |
1486 | unsigned long data_count; | |
1487 | bfd_size_type total_size; | |
1488 | }; | |
1489 | ||
1490 | /* Callback service function for generic_load (bfd_map_over_sections). */ | |
1491 | ||
1492 | static void | |
1493 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
1494 | { | |
1495 | struct load_section_data *args = data; | |
1496 | ||
1497 | if (bfd_get_section_flags (abfd, asec) & SEC_LOAD) | |
1498 | { | |
1499 | bfd_size_type size = bfd_get_section_size_before_reloc (asec); | |
1500 | if (size > 0) | |
1501 | { | |
1502 | char *buffer; | |
1503 | struct cleanup *old_chain; | |
1504 | CORE_ADDR lma = bfd_section_lma (abfd, asec) + args->load_offset; | |
1505 | bfd_size_type block_size; | |
1506 | int err; | |
1507 | const char *sect_name = bfd_get_section_name (abfd, asec); | |
1508 | bfd_size_type sent; | |
1509 | ||
1510 | if (download_write_size > 0 && size > download_write_size) | |
1511 | block_size = download_write_size; | |
1512 | else | |
1513 | block_size = size; | |
1514 | ||
1515 | buffer = xmalloc (size); | |
1516 | old_chain = make_cleanup (xfree, buffer); | |
1517 | ||
1518 | /* Is this really necessary? I guess it gives the user something | |
1519 | to look at during a long download. */ | |
e4f9b4d5 MS |
1520 | ui_out_message (uiout, 0, "Loading section %s, size 0x%s lma 0x%s\n", |
1521 | sect_name, paddr_nz (size), paddr_nz (lma)); | |
e4f9b4d5 MS |
1522 | |
1523 | bfd_get_section_contents (abfd, asec, buffer, 0, size); | |
1524 | ||
1525 | sent = 0; | |
1526 | do | |
1527 | { | |
1528 | int len; | |
1529 | bfd_size_type this_transfer = size - sent; | |
1530 | ||
1531 | if (this_transfer >= block_size) | |
1532 | this_transfer = block_size; | |
1533 | len = target_write_memory_partial (lma, buffer, | |
1534 | this_transfer, &err); | |
1535 | if (err) | |
1536 | break; | |
1537 | if (validate_download) | |
1538 | { | |
1539 | /* Broken memories and broken monitors manifest | |
1540 | themselves here when bring new computers to | |
1541 | life. This doubles already slow downloads. */ | |
1542 | /* NOTE: cagney/1999-10-18: A more efficient | |
1543 | implementation might add a verify_memory() | |
1544 | method to the target vector and then use | |
1545 | that. remote.c could implement that method | |
1546 | using the ``qCRC'' packet. */ | |
1547 | char *check = xmalloc (len); | |
1548 | struct cleanup *verify_cleanups = | |
1549 | make_cleanup (xfree, check); | |
1550 | ||
1551 | if (target_read_memory (lma, check, len) != 0) | |
1552 | error ("Download verify read failed at 0x%s", | |
1553 | paddr (lma)); | |
1554 | if (memcmp (buffer, check, len) != 0) | |
1555 | error ("Download verify compare failed at 0x%s", | |
1556 | paddr (lma)); | |
1557 | do_cleanups (verify_cleanups); | |
1558 | } | |
1559 | args->data_count += len; | |
1560 | lma += len; | |
1561 | buffer += len; | |
1562 | args->write_count += 1; | |
1563 | sent += len; | |
1564 | if (quit_flag | |
1565 | || (ui_load_progress_hook != NULL | |
1566 | && ui_load_progress_hook (sect_name, sent))) | |
1567 | error ("Canceled the download"); | |
1568 | ||
1569 | if (show_load_progress != NULL) | |
1570 | show_load_progress (sect_name, sent, size, | |
1571 | args->data_count, args->total_size); | |
1572 | } | |
1573 | while (sent < size); | |
1574 | ||
1575 | if (err != 0) | |
1576 | error ("Memory access error while loading section %s.", sect_name); | |
1577 | ||
1578 | do_cleanups (old_chain); | |
1579 | } | |
1580 | } | |
1581 | } | |
1582 | ||
c906108c | 1583 | void |
917317f4 | 1584 | generic_load (char *args, int from_tty) |
c906108c | 1585 | { |
c906108c SS |
1586 | asection *s; |
1587 | bfd *loadfile_bfd; | |
1588 | time_t start_time, end_time; /* Start and end times of download */ | |
917317f4 JM |
1589 | char *filename; |
1590 | struct cleanup *old_cleanups; | |
1591 | char *offptr; | |
e4f9b4d5 MS |
1592 | struct load_section_data cbdata; |
1593 | CORE_ADDR entry; | |
1594 | ||
1595 | cbdata.load_offset = 0; /* Offset to add to vma for each section. */ | |
1596 | cbdata.write_count = 0; /* Number of writes needed. */ | |
1597 | cbdata.data_count = 0; /* Number of bytes written to target memory. */ | |
1598 | cbdata.total_size = 0; /* Total size of all bfd sectors. */ | |
917317f4 JM |
1599 | |
1600 | /* Parse the input argument - the user can specify a load offset as | |
1601 | a second argument. */ | |
1602 | filename = xmalloc (strlen (args) + 1); | |
b8c9b27d | 1603 | old_cleanups = make_cleanup (xfree, filename); |
917317f4 JM |
1604 | strcpy (filename, args); |
1605 | offptr = strchr (filename, ' '); | |
1606 | if (offptr != NULL) | |
1607 | { | |
1608 | char *endptr; | |
ba5f2f8a | 1609 | |
e4f9b4d5 | 1610 | cbdata.load_offset = strtoul (offptr, &endptr, 0); |
917317f4 JM |
1611 | if (offptr == endptr) |
1612 | error ("Invalid download offset:%s\n", offptr); | |
1613 | *offptr = '\0'; | |
1614 | } | |
c906108c | 1615 | else |
e4f9b4d5 | 1616 | cbdata.load_offset = 0; |
c906108c | 1617 | |
917317f4 | 1618 | /* Open the file for loading. */ |
c906108c SS |
1619 | loadfile_bfd = bfd_openr (filename, gnutarget); |
1620 | if (loadfile_bfd == NULL) | |
1621 | { | |
1622 | perror_with_name (filename); | |
1623 | return; | |
1624 | } | |
917317f4 | 1625 | |
c906108c SS |
1626 | /* FIXME: should be checking for errors from bfd_close (for one thing, |
1627 | on error it does not free all the storage associated with the | |
1628 | bfd). */ | |
5c65bbb6 | 1629 | make_cleanup_bfd_close (loadfile_bfd); |
c906108c | 1630 | |
c5aa993b | 1631 | if (!bfd_check_format (loadfile_bfd, bfd_object)) |
c906108c SS |
1632 | { |
1633 | error ("\"%s\" is not an object file: %s", filename, | |
1634 | bfd_errmsg (bfd_get_error ())); | |
1635 | } | |
c5aa993b | 1636 | |
e4f9b4d5 MS |
1637 | bfd_map_over_sections (loadfile_bfd, add_section_size_callback, |
1638 | (void *) &cbdata.total_size); | |
c2d11a7d | 1639 | |
c906108c SS |
1640 | start_time = time (NULL); |
1641 | ||
e4f9b4d5 | 1642 | bfd_map_over_sections (loadfile_bfd, load_section_callback, &cbdata); |
c906108c SS |
1643 | |
1644 | end_time = time (NULL); | |
ba5f2f8a | 1645 | |
e4f9b4d5 | 1646 | entry = bfd_get_start_address (loadfile_bfd); |
e4f9b4d5 MS |
1647 | ui_out_text (uiout, "Start address "); |
1648 | ui_out_field_fmt (uiout, "address", "0x%s", paddr_nz (entry)); | |
1649 | ui_out_text (uiout, ", load size "); | |
1650 | ui_out_field_fmt (uiout, "load-size", "%lu", cbdata.data_count); | |
1651 | ui_out_text (uiout, "\n"); | |
e4f9b4d5 MS |
1652 | /* We were doing this in remote-mips.c, I suspect it is right |
1653 | for other targets too. */ | |
1654 | write_pc (entry); | |
c906108c | 1655 | |
7ca9f392 AC |
1656 | /* FIXME: are we supposed to call symbol_file_add or not? According |
1657 | to a comment from remote-mips.c (where a call to symbol_file_add | |
1658 | was commented out), making the call confuses GDB if more than one | |
1659 | file is loaded in. Some targets do (e.g., remote-vx.c) but | |
1660 | others don't (or didn't - perhaphs they have all been deleted). */ | |
c906108c | 1661 | |
e4f9b4d5 MS |
1662 | print_transfer_performance (gdb_stdout, cbdata.data_count, |
1663 | cbdata.write_count, end_time - start_time); | |
c906108c SS |
1664 | |
1665 | do_cleanups (old_cleanups); | |
1666 | } | |
1667 | ||
1668 | /* Report how fast the transfer went. */ | |
1669 | ||
917317f4 JM |
1670 | /* DEPRECATED: cagney/1999-10-18: report_transfer_performance is being |
1671 | replaced by print_transfer_performance (with a very different | |
1672 | function signature). */ | |
1673 | ||
c906108c | 1674 | void |
fba45db2 KB |
1675 | report_transfer_performance (unsigned long data_count, time_t start_time, |
1676 | time_t end_time) | |
c906108c | 1677 | { |
ba5f2f8a MS |
1678 | print_transfer_performance (gdb_stdout, data_count, |
1679 | end_time - start_time, 0); | |
917317f4 JM |
1680 | } |
1681 | ||
1682 | void | |
d9fcf2fb | 1683 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
1684 | unsigned long data_count, |
1685 | unsigned long write_count, | |
1686 | unsigned long time_count) | |
1687 | { | |
8b93c638 JM |
1688 | ui_out_text (uiout, "Transfer rate: "); |
1689 | if (time_count > 0) | |
1690 | { | |
ba5f2f8a | 1691 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", |
8b93c638 JM |
1692 | (data_count * 8) / time_count); |
1693 | ui_out_text (uiout, " bits/sec"); | |
1694 | } | |
1695 | else | |
1696 | { | |
ba5f2f8a | 1697 | ui_out_field_fmt (uiout, "transferred-bits", "%lu", (data_count * 8)); |
8b93c638 JM |
1698 | ui_out_text (uiout, " bits in <1 sec"); |
1699 | } | |
1700 | if (write_count > 0) | |
1701 | { | |
1702 | ui_out_text (uiout, ", "); | |
ba5f2f8a | 1703 | ui_out_field_fmt (uiout, "write-rate", "%lu", data_count / write_count); |
8b93c638 JM |
1704 | ui_out_text (uiout, " bytes/write"); |
1705 | } | |
1706 | ui_out_text (uiout, ".\n"); | |
c906108c SS |
1707 | } |
1708 | ||
1709 | /* This function allows the addition of incrementally linked object files. | |
1710 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
1711 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
1712 | special case syntax for the rombug target (Rombug is the boot | |
1713 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
1714 | rombug case, the user doesn't need to supply a text address, | |
1715 | instead a call to target_link() (in target.c) would supply the | |
1716 | value to use. We are now discontinuing this type of ad hoc syntax. */ | |
c906108c SS |
1717 | |
1718 | /* ARGSUSED */ | |
1719 | static void | |
fba45db2 | 1720 | add_symbol_file_command (char *args, int from_tty) |
c906108c | 1721 | { |
db162d44 | 1722 | char *filename = NULL; |
2df3850c | 1723 | int flags = OBJF_USERLOADED; |
c906108c | 1724 | char *arg; |
2acceee2 | 1725 | int expecting_option = 0; |
db162d44 | 1726 | int section_index = 0; |
2acceee2 JM |
1727 | int argcnt = 0; |
1728 | int sec_num = 0; | |
1729 | int i; | |
db162d44 EZ |
1730 | int expecting_sec_name = 0; |
1731 | int expecting_sec_addr = 0; | |
1732 | ||
2acceee2 JM |
1733 | struct |
1734 | { | |
2acceee2 JM |
1735 | char *name; |
1736 | char *value; | |
db162d44 EZ |
1737 | } sect_opts[SECT_OFF_MAX]; |
1738 | ||
2acceee2 | 1739 | struct section_addr_info section_addrs; |
3017564a | 1740 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); |
c5aa993b | 1741 | |
c906108c SS |
1742 | dont_repeat (); |
1743 | ||
1744 | if (args == NULL) | |
db162d44 | 1745 | error ("add-symbol-file takes a file name and an address"); |
c906108c SS |
1746 | |
1747 | /* Make a copy of the string that we can safely write into. */ | |
c2d11a7d | 1748 | args = xstrdup (args); |
c906108c | 1749 | |
2acceee2 JM |
1750 | /* Ensure section_addrs is initialized */ |
1751 | memset (§ion_addrs, 0, sizeof (section_addrs)); | |
1752 | ||
2acceee2 | 1753 | while (*args != '\000') |
c906108c | 1754 | { |
db162d44 | 1755 | /* Any leading spaces? */ |
c5aa993b | 1756 | while (isspace (*args)) |
db162d44 EZ |
1757 | args++; |
1758 | ||
1759 | /* Point arg to the beginning of the argument. */ | |
c906108c | 1760 | arg = args; |
db162d44 EZ |
1761 | |
1762 | /* Move args pointer over the argument. */ | |
c5aa993b | 1763 | while ((*args != '\000') && !isspace (*args)) |
db162d44 EZ |
1764 | args++; |
1765 | ||
1766 | /* If there are more arguments, terminate arg and | |
1767 | proceed past it. */ | |
c906108c | 1768 | if (*args != '\000') |
db162d44 EZ |
1769 | *args++ = '\000'; |
1770 | ||
1771 | /* Now process the argument. */ | |
1772 | if (argcnt == 0) | |
c906108c | 1773 | { |
db162d44 EZ |
1774 | /* The first argument is the file name. */ |
1775 | filename = tilde_expand (arg); | |
3017564a | 1776 | make_cleanup (xfree, filename); |
c906108c | 1777 | } |
db162d44 | 1778 | else |
7a78ae4e ND |
1779 | if (argcnt == 1) |
1780 | { | |
1781 | /* The second argument is always the text address at which | |
1782 | to load the program. */ | |
1783 | sect_opts[section_index].name = ".text"; | |
1784 | sect_opts[section_index].value = arg; | |
1785 | section_index++; | |
1786 | } | |
1787 | else | |
1788 | { | |
1789 | /* It's an option (starting with '-') or it's an argument | |
1790 | to an option */ | |
1791 | ||
1792 | if (*arg == '-') | |
1793 | { | |
1794 | if (strcmp (arg, "-mapped") == 0) | |
1795 | flags |= OBJF_MAPPED; | |
1796 | else | |
1797 | if (strcmp (arg, "-readnow") == 0) | |
1798 | flags |= OBJF_READNOW; | |
1799 | else | |
1800 | if (strcmp (arg, "-s") == 0) | |
1801 | { | |
1802 | if (section_index >= SECT_OFF_MAX) | |
1803 | error ("Too many sections specified."); | |
1804 | expecting_sec_name = 1; | |
1805 | expecting_sec_addr = 1; | |
1806 | } | |
1807 | } | |
1808 | else | |
1809 | { | |
1810 | if (expecting_sec_name) | |
db162d44 | 1811 | { |
7a78ae4e ND |
1812 | sect_opts[section_index].name = arg; |
1813 | expecting_sec_name = 0; | |
db162d44 EZ |
1814 | } |
1815 | else | |
7a78ae4e ND |
1816 | if (expecting_sec_addr) |
1817 | { | |
1818 | sect_opts[section_index].value = arg; | |
1819 | expecting_sec_addr = 0; | |
1820 | section_index++; | |
1821 | } | |
1822 | else | |
1823 | error ("USAGE: add-symbol-file <filename> <textaddress> [-mapped] [-readnow] [-s <secname> <addr>]*"); | |
1824 | } | |
1825 | } | |
db162d44 | 1826 | argcnt++; |
c906108c | 1827 | } |
c906108c | 1828 | |
db162d44 EZ |
1829 | /* Print the prompt for the query below. And save the arguments into |
1830 | a sect_addr_info structure to be passed around to other | |
1831 | functions. We have to split this up into separate print | |
1832 | statements because local_hex_string returns a local static | |
1833 | string. */ | |
2acceee2 | 1834 | |
db162d44 EZ |
1835 | printf_filtered ("add symbol table from file \"%s\" at\n", filename); |
1836 | for (i = 0; i < section_index; i++) | |
c906108c | 1837 | { |
db162d44 EZ |
1838 | CORE_ADDR addr; |
1839 | char *val = sect_opts[i].value; | |
1840 | char *sec = sect_opts[i].name; | |
1841 | ||
1842 | val = sect_opts[i].value; | |
1843 | if (val[0] == '0' && val[1] == 'x') | |
1844 | addr = strtoul (val+2, NULL, 16); | |
1845 | else | |
1846 | addr = strtoul (val, NULL, 10); | |
1847 | ||
db162d44 EZ |
1848 | /* Here we store the section offsets in the order they were |
1849 | entered on the command line. */ | |
1850 | section_addrs.other[sec_num].name = sec; | |
1851 | section_addrs.other[sec_num].addr = addr; | |
1852 | printf_filtered ("\t%s_addr = %s\n", | |
1853 | sec, | |
1854 | local_hex_string ((unsigned long)addr)); | |
1855 | sec_num++; | |
1856 | ||
1857 | /* The object's sections are initialized when a | |
1858 | call is made to build_objfile_section_table (objfile). | |
1859 | This happens in reread_symbols. | |
1860 | At this point, we don't know what file type this is, | |
1861 | so we can't determine what section names are valid. */ | |
2acceee2 | 1862 | } |
db162d44 | 1863 | |
2acceee2 | 1864 | if (from_tty && (!query ("%s", ""))) |
c906108c SS |
1865 | error ("Not confirmed."); |
1866 | ||
db162d44 | 1867 | symbol_file_add (filename, from_tty, §ion_addrs, 0, flags); |
c906108c SS |
1868 | |
1869 | /* Getting new symbols may change our opinion about what is | |
1870 | frameless. */ | |
1871 | reinit_frame_cache (); | |
db162d44 | 1872 | do_cleanups (my_cleanups); |
c906108c SS |
1873 | } |
1874 | \f | |
1875 | static void | |
fba45db2 | 1876 | add_shared_symbol_files_command (char *args, int from_tty) |
c906108c SS |
1877 | { |
1878 | #ifdef ADD_SHARED_SYMBOL_FILES | |
1879 | ADD_SHARED_SYMBOL_FILES (args, from_tty); | |
1880 | #else | |
1881 | error ("This command is not available in this configuration of GDB."); | |
c5aa993b | 1882 | #endif |
c906108c SS |
1883 | } |
1884 | \f | |
1885 | /* Re-read symbols if a symbol-file has changed. */ | |
1886 | void | |
fba45db2 | 1887 | reread_symbols (void) |
c906108c SS |
1888 | { |
1889 | struct objfile *objfile; | |
1890 | long new_modtime; | |
1891 | int reread_one = 0; | |
1892 | struct stat new_statbuf; | |
1893 | int res; | |
1894 | ||
1895 | /* With the addition of shared libraries, this should be modified, | |
1896 | the load time should be saved in the partial symbol tables, since | |
1897 | different tables may come from different source files. FIXME. | |
1898 | This routine should then walk down each partial symbol table | |
1899 | and see if the symbol table that it originates from has been changed */ | |
1900 | ||
c5aa993b JM |
1901 | for (objfile = object_files; objfile; objfile = objfile->next) |
1902 | { | |
1903 | if (objfile->obfd) | |
1904 | { | |
c906108c | 1905 | #ifdef IBM6000_TARGET |
c5aa993b JM |
1906 | /* If this object is from a shared library, then you should |
1907 | stat on the library name, not member name. */ | |
c906108c | 1908 | |
c5aa993b JM |
1909 | if (objfile->obfd->my_archive) |
1910 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
1911 | else | |
c906108c | 1912 | #endif |
c5aa993b JM |
1913 | res = stat (objfile->name, &new_statbuf); |
1914 | if (res != 0) | |
c906108c | 1915 | { |
c5aa993b JM |
1916 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
1917 | printf_filtered ("`%s' has disappeared; keeping its symbols.\n", | |
1918 | objfile->name); | |
1919 | continue; | |
c906108c | 1920 | } |
c5aa993b JM |
1921 | new_modtime = new_statbuf.st_mtime; |
1922 | if (new_modtime != objfile->mtime) | |
c906108c | 1923 | { |
c5aa993b JM |
1924 | struct cleanup *old_cleanups; |
1925 | struct section_offsets *offsets; | |
1926 | int num_offsets; | |
c5aa993b JM |
1927 | char *obfd_filename; |
1928 | ||
1929 | printf_filtered ("`%s' has changed; re-reading symbols.\n", | |
1930 | objfile->name); | |
1931 | ||
1932 | /* There are various functions like symbol_file_add, | |
1933 | symfile_bfd_open, syms_from_objfile, etc., which might | |
1934 | appear to do what we want. But they have various other | |
1935 | effects which we *don't* want. So we just do stuff | |
1936 | ourselves. We don't worry about mapped files (for one thing, | |
1937 | any mapped file will be out of date). */ | |
1938 | ||
1939 | /* If we get an error, blow away this objfile (not sure if | |
1940 | that is the correct response for things like shared | |
1941 | libraries). */ | |
74b7792f | 1942 | old_cleanups = make_cleanup_free_objfile (objfile); |
c5aa993b | 1943 | /* We need to do this whenever any symbols go away. */ |
74b7792f | 1944 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c5aa993b JM |
1945 | |
1946 | /* Clean up any state BFD has sitting around. We don't need | |
1947 | to close the descriptor but BFD lacks a way of closing the | |
1948 | BFD without closing the descriptor. */ | |
1949 | obfd_filename = bfd_get_filename (objfile->obfd); | |
1950 | if (!bfd_close (objfile->obfd)) | |
1951 | error ("Can't close BFD for %s: %s", objfile->name, | |
1952 | bfd_errmsg (bfd_get_error ())); | |
1953 | objfile->obfd = bfd_openr (obfd_filename, gnutarget); | |
1954 | if (objfile->obfd == NULL) | |
1955 | error ("Can't open %s to read symbols.", objfile->name); | |
1956 | /* bfd_openr sets cacheable to true, which is what we want. */ | |
1957 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
1958 | error ("Can't read symbols from %s: %s.", objfile->name, | |
1959 | bfd_errmsg (bfd_get_error ())); | |
1960 | ||
1961 | /* Save the offsets, we will nuke them with the rest of the | |
1962 | psymbol_obstack. */ | |
1963 | num_offsets = objfile->num_sections; | |
d4f3574e SS |
1964 | offsets = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); |
1965 | memcpy (offsets, objfile->section_offsets, SIZEOF_SECTION_OFFSETS); | |
c5aa993b JM |
1966 | |
1967 | /* Nuke all the state that we will re-read. Much of the following | |
1968 | code which sets things to NULL really is necessary to tell | |
1969 | other parts of GDB that there is nothing currently there. */ | |
1970 | ||
1971 | /* FIXME: Do we have to free a whole linked list, or is this | |
1972 | enough? */ | |
1973 | if (objfile->global_psymbols.list) | |
aac7f4ea | 1974 | xmfree (objfile->md, objfile->global_psymbols.list); |
c5aa993b JM |
1975 | memset (&objfile->global_psymbols, 0, |
1976 | sizeof (objfile->global_psymbols)); | |
1977 | if (objfile->static_psymbols.list) | |
aac7f4ea | 1978 | xmfree (objfile->md, objfile->static_psymbols.list); |
c5aa993b JM |
1979 | memset (&objfile->static_psymbols, 0, |
1980 | sizeof (objfile->static_psymbols)); | |
1981 | ||
1982 | /* Free the obstacks for non-reusable objfiles */ | |
af5f3db6 AC |
1983 | bcache_xfree (objfile->psymbol_cache); |
1984 | objfile->psymbol_cache = bcache_xmalloc (); | |
1985 | bcache_xfree (objfile->macro_cache); | |
1986 | objfile->macro_cache = bcache_xmalloc (); | |
2de7ced7 DJ |
1987 | if (objfile->demangled_names_hash != NULL) |
1988 | { | |
1989 | htab_delete (objfile->demangled_names_hash); | |
1990 | objfile->demangled_names_hash = NULL; | |
1991 | } | |
c5aa993b JM |
1992 | obstack_free (&objfile->psymbol_obstack, 0); |
1993 | obstack_free (&objfile->symbol_obstack, 0); | |
1994 | obstack_free (&objfile->type_obstack, 0); | |
1995 | objfile->sections = NULL; | |
1996 | objfile->symtabs = NULL; | |
1997 | objfile->psymtabs = NULL; | |
1998 | objfile->free_psymtabs = NULL; | |
1999 | objfile->msymbols = NULL; | |
2000 | objfile->minimal_symbol_count = 0; | |
0a83117a MS |
2001 | memset (&objfile->msymbol_hash, 0, |
2002 | sizeof (objfile->msymbol_hash)); | |
2003 | memset (&objfile->msymbol_demangled_hash, 0, | |
2004 | sizeof (objfile->msymbol_demangled_hash)); | |
c5aa993b JM |
2005 | objfile->fundamental_types = NULL; |
2006 | if (objfile->sf != NULL) | |
2007 | { | |
2008 | (*objfile->sf->sym_finish) (objfile); | |
2009 | } | |
2010 | ||
2011 | /* We never make this a mapped file. */ | |
2012 | objfile->md = NULL; | |
2013 | /* obstack_specify_allocation also initializes the obstack so | |
2014 | it is empty. */ | |
af5f3db6 AC |
2015 | objfile->psymbol_cache = bcache_xmalloc (); |
2016 | objfile->macro_cache = bcache_xmalloc (); | |
c5aa993b | 2017 | obstack_specify_allocation (&objfile->psymbol_obstack, 0, 0, |
b8c9b27d | 2018 | xmalloc, xfree); |
c5aa993b | 2019 | obstack_specify_allocation (&objfile->symbol_obstack, 0, 0, |
b8c9b27d | 2020 | xmalloc, xfree); |
c5aa993b | 2021 | obstack_specify_allocation (&objfile->type_obstack, 0, 0, |
b8c9b27d | 2022 | xmalloc, xfree); |
c5aa993b JM |
2023 | if (build_objfile_section_table (objfile)) |
2024 | { | |
2025 | error ("Can't find the file sections in `%s': %s", | |
2026 | objfile->name, bfd_errmsg (bfd_get_error ())); | |
2027 | } | |
15831452 | 2028 | terminate_minimal_symbol_table (objfile); |
c5aa993b JM |
2029 | |
2030 | /* We use the same section offsets as from last time. I'm not | |
2031 | sure whether that is always correct for shared libraries. */ | |
2032 | objfile->section_offsets = (struct section_offsets *) | |
d4f3574e SS |
2033 | obstack_alloc (&objfile->psymbol_obstack, SIZEOF_SECTION_OFFSETS); |
2034 | memcpy (objfile->section_offsets, offsets, SIZEOF_SECTION_OFFSETS); | |
c5aa993b JM |
2035 | objfile->num_sections = num_offsets; |
2036 | ||
2037 | /* What the hell is sym_new_init for, anyway? The concept of | |
2038 | distinguishing between the main file and additional files | |
2039 | in this way seems rather dubious. */ | |
2040 | if (objfile == symfile_objfile) | |
2041 | { | |
2042 | (*objfile->sf->sym_new_init) (objfile); | |
c906108c | 2043 | #ifdef HPUXHPPA |
c5aa993b | 2044 | RESET_HP_UX_GLOBALS (); |
c906108c | 2045 | #endif |
c5aa993b JM |
2046 | } |
2047 | ||
2048 | (*objfile->sf->sym_init) (objfile); | |
b9caf505 | 2049 | clear_complaints (&symfile_complaints, 1, 1); |
c5aa993b JM |
2050 | /* The "mainline" parameter is a hideous hack; I think leaving it |
2051 | zero is OK since dbxread.c also does what it needs to do if | |
2052 | objfile->global_psymbols.size is 0. */ | |
96baa820 | 2053 | (*objfile->sf->sym_read) (objfile, 0); |
c5aa993b JM |
2054 | if (!have_partial_symbols () && !have_full_symbols ()) |
2055 | { | |
2056 | wrap_here (""); | |
2057 | printf_filtered ("(no debugging symbols found)\n"); | |
2058 | wrap_here (""); | |
2059 | } | |
2060 | objfile->flags |= OBJF_SYMS; | |
2061 | ||
2062 | /* We're done reading the symbol file; finish off complaints. */ | |
b9caf505 | 2063 | clear_complaints (&symfile_complaints, 0, 1); |
c906108c | 2064 | |
c5aa993b JM |
2065 | /* Getting new symbols may change our opinion about what is |
2066 | frameless. */ | |
c906108c | 2067 | |
c5aa993b | 2068 | reinit_frame_cache (); |
c906108c | 2069 | |
c5aa993b JM |
2070 | /* Discard cleanups as symbol reading was successful. */ |
2071 | discard_cleanups (old_cleanups); | |
c906108c | 2072 | |
c5aa993b JM |
2073 | /* If the mtime has changed between the time we set new_modtime |
2074 | and now, we *want* this to be out of date, so don't call stat | |
2075 | again now. */ | |
2076 | objfile->mtime = new_modtime; | |
2077 | reread_one = 1; | |
c906108c | 2078 | |
c5aa993b | 2079 | /* Call this after reading in a new symbol table to give target |
38c2ef12 | 2080 | dependent code a crack at the new symbols. For instance, this |
c5aa993b JM |
2081 | could be used to update the values of target-specific symbols GDB |
2082 | needs to keep track of (such as _sigtramp, or whatever). */ | |
c906108c | 2083 | |
c5aa993b | 2084 | TARGET_SYMFILE_POSTREAD (objfile); |
5b5d99cf JB |
2085 | |
2086 | reread_separate_symbols (objfile); | |
c5aa993b | 2087 | } |
c906108c SS |
2088 | } |
2089 | } | |
c906108c SS |
2090 | |
2091 | if (reread_one) | |
2092 | clear_symtab_users (); | |
2093 | } | |
5b5d99cf JB |
2094 | |
2095 | ||
2096 | /* Handle separate debug info for OBJFILE, which has just been | |
2097 | re-read: | |
2098 | - If we had separate debug info before, but now we don't, get rid | |
2099 | of the separated objfile. | |
2100 | - If we didn't have separated debug info before, but now we do, | |
2101 | read in the new separated debug info file. | |
2102 | - If the debug link points to a different file, toss the old one | |
2103 | and read the new one. | |
2104 | This function does *not* handle the case where objfile is still | |
2105 | using the same separate debug info file, but that file's timestamp | |
2106 | has changed. That case should be handled by the loop in | |
2107 | reread_symbols already. */ | |
2108 | static void | |
2109 | reread_separate_symbols (struct objfile *objfile) | |
2110 | { | |
2111 | char *debug_file; | |
2112 | unsigned long crc32; | |
2113 | ||
2114 | /* Does the updated objfile's debug info live in a | |
2115 | separate file? */ | |
2116 | debug_file = find_separate_debug_file (objfile); | |
2117 | ||
2118 | if (objfile->separate_debug_objfile) | |
2119 | { | |
2120 | /* There are two cases where we need to get rid of | |
2121 | the old separated debug info objfile: | |
2122 | - if the new primary objfile doesn't have | |
2123 | separated debug info, or | |
2124 | - if the new primary objfile has separate debug | |
2125 | info, but it's under a different filename. | |
2126 | ||
2127 | If the old and new objfiles both have separate | |
2128 | debug info, under the same filename, then we're | |
2129 | okay --- if the separated file's contents have | |
2130 | changed, we will have caught that when we | |
2131 | visited it in this function's outermost | |
2132 | loop. */ | |
2133 | if (! debug_file | |
2134 | || strcmp (debug_file, objfile->separate_debug_objfile->name) != 0) | |
2135 | free_objfile (objfile->separate_debug_objfile); | |
2136 | } | |
2137 | ||
2138 | /* If the new objfile has separate debug info, and we | |
2139 | haven't loaded it already, do so now. */ | |
2140 | if (debug_file | |
2141 | && ! objfile->separate_debug_objfile) | |
2142 | { | |
2143 | /* Use the same section offset table as objfile itself. | |
2144 | Preserve the flags from objfile that make sense. */ | |
2145 | objfile->separate_debug_objfile | |
2146 | = (symbol_file_add_with_addrs_or_offsets | |
2147 | (debug_file, | |
2148 | info_verbose, /* from_tty: Don't override the default. */ | |
2149 | 0, /* No addr table. */ | |
2150 | objfile->section_offsets, objfile->num_sections, | |
2151 | 0, /* Not mainline. See comments about this above. */ | |
2152 | objfile->flags & (OBJF_MAPPED | OBJF_REORDERED | |
2153 | | OBJF_SHARED | OBJF_READNOW | |
2154 | | OBJF_USERLOADED))); | |
2155 | objfile->separate_debug_objfile->separate_debug_objfile_backlink | |
2156 | = objfile; | |
2157 | } | |
2158 | } | |
2159 | ||
2160 | ||
c906108c SS |
2161 | \f |
2162 | ||
c5aa993b JM |
2163 | |
2164 | typedef struct | |
2165 | { | |
2166 | char *ext; | |
c906108c | 2167 | enum language lang; |
c5aa993b JM |
2168 | } |
2169 | filename_language; | |
c906108c | 2170 | |
c5aa993b | 2171 | static filename_language *filename_language_table; |
c906108c SS |
2172 | static int fl_table_size, fl_table_next; |
2173 | ||
2174 | static void | |
fba45db2 | 2175 | add_filename_language (char *ext, enum language lang) |
c906108c SS |
2176 | { |
2177 | if (fl_table_next >= fl_table_size) | |
2178 | { | |
2179 | fl_table_size += 10; | |
25bf3106 PM |
2180 | filename_language_table = |
2181 | xrealloc (filename_language_table, | |
2182 | fl_table_size * sizeof (*filename_language_table)); | |
c906108c SS |
2183 | } |
2184 | ||
4fcf66da | 2185 | filename_language_table[fl_table_next].ext = xstrdup (ext); |
c906108c SS |
2186 | filename_language_table[fl_table_next].lang = lang; |
2187 | fl_table_next++; | |
2188 | } | |
2189 | ||
2190 | static char *ext_args; | |
2191 | ||
2192 | static void | |
fba45db2 | 2193 | set_ext_lang_command (char *args, int from_tty) |
c906108c SS |
2194 | { |
2195 | int i; | |
2196 | char *cp = ext_args; | |
2197 | enum language lang; | |
2198 | ||
2199 | /* First arg is filename extension, starting with '.' */ | |
2200 | if (*cp != '.') | |
2201 | error ("'%s': Filename extension must begin with '.'", ext_args); | |
2202 | ||
2203 | /* Find end of first arg. */ | |
c5aa993b | 2204 | while (*cp && !isspace (*cp)) |
c906108c SS |
2205 | cp++; |
2206 | ||
2207 | if (*cp == '\0') | |
2208 | error ("'%s': two arguments required -- filename extension and language", | |
2209 | ext_args); | |
2210 | ||
2211 | /* Null-terminate first arg */ | |
c5aa993b | 2212 | *cp++ = '\0'; |
c906108c SS |
2213 | |
2214 | /* Find beginning of second arg, which should be a source language. */ | |
2215 | while (*cp && isspace (*cp)) | |
2216 | cp++; | |
2217 | ||
2218 | if (*cp == '\0') | |
2219 | error ("'%s': two arguments required -- filename extension and language", | |
2220 | ext_args); | |
2221 | ||
2222 | /* Lookup the language from among those we know. */ | |
2223 | lang = language_enum (cp); | |
2224 | ||
2225 | /* Now lookup the filename extension: do we already know it? */ | |
2226 | for (i = 0; i < fl_table_next; i++) | |
2227 | if (0 == strcmp (ext_args, filename_language_table[i].ext)) | |
2228 | break; | |
2229 | ||
2230 | if (i >= fl_table_next) | |
2231 | { | |
2232 | /* new file extension */ | |
2233 | add_filename_language (ext_args, lang); | |
2234 | } | |
2235 | else | |
2236 | { | |
2237 | /* redefining a previously known filename extension */ | |
2238 | ||
2239 | /* if (from_tty) */ | |
2240 | /* query ("Really make files of type %s '%s'?", */ | |
2241 | /* ext_args, language_str (lang)); */ | |
2242 | ||
b8c9b27d | 2243 | xfree (filename_language_table[i].ext); |
4fcf66da | 2244 | filename_language_table[i].ext = xstrdup (ext_args); |
c906108c SS |
2245 | filename_language_table[i].lang = lang; |
2246 | } | |
2247 | } | |
2248 | ||
2249 | static void | |
fba45db2 | 2250 | info_ext_lang_command (char *args, int from_tty) |
c906108c SS |
2251 | { |
2252 | int i; | |
2253 | ||
2254 | printf_filtered ("Filename extensions and the languages they represent:"); | |
2255 | printf_filtered ("\n\n"); | |
2256 | for (i = 0; i < fl_table_next; i++) | |
c5aa993b JM |
2257 | printf_filtered ("\t%s\t- %s\n", |
2258 | filename_language_table[i].ext, | |
c906108c SS |
2259 | language_str (filename_language_table[i].lang)); |
2260 | } | |
2261 | ||
2262 | static void | |
fba45db2 | 2263 | init_filename_language_table (void) |
c906108c SS |
2264 | { |
2265 | if (fl_table_size == 0) /* protect against repetition */ | |
2266 | { | |
2267 | fl_table_size = 20; | |
2268 | fl_table_next = 0; | |
c5aa993b | 2269 | filename_language_table = |
c906108c | 2270 | xmalloc (fl_table_size * sizeof (*filename_language_table)); |
c5aa993b JM |
2271 | add_filename_language (".c", language_c); |
2272 | add_filename_language (".C", language_cplus); | |
2273 | add_filename_language (".cc", language_cplus); | |
2274 | add_filename_language (".cp", language_cplus); | |
2275 | add_filename_language (".cpp", language_cplus); | |
2276 | add_filename_language (".cxx", language_cplus); | |
2277 | add_filename_language (".c++", language_cplus); | |
2278 | add_filename_language (".java", language_java); | |
c906108c | 2279 | add_filename_language (".class", language_java); |
da2cf7e0 | 2280 | add_filename_language (".m", language_objc); |
c5aa993b JM |
2281 | add_filename_language (".f", language_fortran); |
2282 | add_filename_language (".F", language_fortran); | |
2283 | add_filename_language (".s", language_asm); | |
2284 | add_filename_language (".S", language_asm); | |
c6fd39cd PM |
2285 | add_filename_language (".pas", language_pascal); |
2286 | add_filename_language (".p", language_pascal); | |
2287 | add_filename_language (".pp", language_pascal); | |
c906108c SS |
2288 | } |
2289 | } | |
2290 | ||
2291 | enum language | |
fba45db2 | 2292 | deduce_language_from_filename (char *filename) |
c906108c SS |
2293 | { |
2294 | int i; | |
2295 | char *cp; | |
2296 | ||
2297 | if (filename != NULL) | |
2298 | if ((cp = strrchr (filename, '.')) != NULL) | |
2299 | for (i = 0; i < fl_table_next; i++) | |
2300 | if (strcmp (cp, filename_language_table[i].ext) == 0) | |
2301 | return filename_language_table[i].lang; | |
2302 | ||
2303 | return language_unknown; | |
2304 | } | |
2305 | \f | |
2306 | /* allocate_symtab: | |
2307 | ||
2308 | Allocate and partly initialize a new symbol table. Return a pointer | |
2309 | to it. error() if no space. | |
2310 | ||
2311 | Caller must set these fields: | |
c5aa993b JM |
2312 | LINETABLE(symtab) |
2313 | symtab->blockvector | |
2314 | symtab->dirname | |
2315 | symtab->free_code | |
2316 | symtab->free_ptr | |
2317 | possibly free_named_symtabs (symtab->filename); | |
c906108c SS |
2318 | */ |
2319 | ||
2320 | struct symtab * | |
fba45db2 | 2321 | allocate_symtab (char *filename, struct objfile *objfile) |
c906108c SS |
2322 | { |
2323 | register struct symtab *symtab; | |
2324 | ||
2325 | symtab = (struct symtab *) | |
c5aa993b | 2326 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct symtab)); |
c906108c | 2327 | memset (symtab, 0, sizeof (*symtab)); |
c5aa993b JM |
2328 | symtab->filename = obsavestring (filename, strlen (filename), |
2329 | &objfile->symbol_obstack); | |
2330 | symtab->fullname = NULL; | |
2331 | symtab->language = deduce_language_from_filename (filename); | |
2332 | symtab->debugformat = obsavestring ("unknown", 7, | |
2333 | &objfile->symbol_obstack); | |
c906108c SS |
2334 | |
2335 | /* Hook it to the objfile it comes from */ | |
2336 | ||
c5aa993b JM |
2337 | symtab->objfile = objfile; |
2338 | symtab->next = objfile->symtabs; | |
2339 | objfile->symtabs = symtab; | |
c906108c SS |
2340 | |
2341 | /* FIXME: This should go away. It is only defined for the Z8000, | |
2342 | and the Z8000 definition of this macro doesn't have anything to | |
2343 | do with the now-nonexistent EXTRA_SYMTAB_INFO macro, it's just | |
2344 | here for convenience. */ | |
2345 | #ifdef INIT_EXTRA_SYMTAB_INFO | |
2346 | INIT_EXTRA_SYMTAB_INFO (symtab); | |
2347 | #endif | |
2348 | ||
2349 | return (symtab); | |
2350 | } | |
2351 | ||
2352 | struct partial_symtab * | |
fba45db2 | 2353 | allocate_psymtab (char *filename, struct objfile *objfile) |
c906108c SS |
2354 | { |
2355 | struct partial_symtab *psymtab; | |
2356 | ||
c5aa993b | 2357 | if (objfile->free_psymtabs) |
c906108c | 2358 | { |
c5aa993b JM |
2359 | psymtab = objfile->free_psymtabs; |
2360 | objfile->free_psymtabs = psymtab->next; | |
c906108c SS |
2361 | } |
2362 | else | |
2363 | psymtab = (struct partial_symtab *) | |
c5aa993b | 2364 | obstack_alloc (&objfile->psymbol_obstack, |
c906108c SS |
2365 | sizeof (struct partial_symtab)); |
2366 | ||
2367 | memset (psymtab, 0, sizeof (struct partial_symtab)); | |
c5aa993b JM |
2368 | psymtab->filename = obsavestring (filename, strlen (filename), |
2369 | &objfile->psymbol_obstack); | |
2370 | psymtab->symtab = NULL; | |
c906108c SS |
2371 | |
2372 | /* Prepend it to the psymtab list for the objfile it belongs to. | |
2373 | Psymtabs are searched in most recent inserted -> least recent | |
2374 | inserted order. */ | |
2375 | ||
c5aa993b JM |
2376 | psymtab->objfile = objfile; |
2377 | psymtab->next = objfile->psymtabs; | |
2378 | objfile->psymtabs = psymtab; | |
c906108c SS |
2379 | #if 0 |
2380 | { | |
2381 | struct partial_symtab **prev_pst; | |
c5aa993b JM |
2382 | psymtab->objfile = objfile; |
2383 | psymtab->next = NULL; | |
2384 | prev_pst = &(objfile->psymtabs); | |
c906108c | 2385 | while ((*prev_pst) != NULL) |
c5aa993b | 2386 | prev_pst = &((*prev_pst)->next); |
c906108c | 2387 | (*prev_pst) = psymtab; |
c5aa993b | 2388 | } |
c906108c | 2389 | #endif |
c5aa993b | 2390 | |
c906108c SS |
2391 | return (psymtab); |
2392 | } | |
2393 | ||
2394 | void | |
fba45db2 | 2395 | discard_psymtab (struct partial_symtab *pst) |
c906108c SS |
2396 | { |
2397 | struct partial_symtab **prev_pst; | |
2398 | ||
2399 | /* From dbxread.c: | |
2400 | Empty psymtabs happen as a result of header files which don't | |
2401 | have any symbols in them. There can be a lot of them. But this | |
2402 | check is wrong, in that a psymtab with N_SLINE entries but | |
2403 | nothing else is not empty, but we don't realize that. Fixing | |
2404 | that without slowing things down might be tricky. */ | |
2405 | ||
2406 | /* First, snip it out of the psymtab chain */ | |
2407 | ||
2408 | prev_pst = &(pst->objfile->psymtabs); | |
2409 | while ((*prev_pst) != pst) | |
2410 | prev_pst = &((*prev_pst)->next); | |
2411 | (*prev_pst) = pst->next; | |
2412 | ||
2413 | /* Next, put it on a free list for recycling */ | |
2414 | ||
2415 | pst->next = pst->objfile->free_psymtabs; | |
2416 | pst->objfile->free_psymtabs = pst; | |
2417 | } | |
c906108c | 2418 | \f |
c5aa993b | 2419 | |
c906108c SS |
2420 | /* Reset all data structures in gdb which may contain references to symbol |
2421 | table data. */ | |
2422 | ||
2423 | void | |
fba45db2 | 2424 | clear_symtab_users (void) |
c906108c SS |
2425 | { |
2426 | /* Someday, we should do better than this, by only blowing away | |
2427 | the things that really need to be blown. */ | |
2428 | clear_value_history (); | |
2429 | clear_displays (); | |
2430 | clear_internalvars (); | |
2431 | breakpoint_re_set (); | |
2432 | set_default_breakpoint (0, 0, 0, 0); | |
0378c332 | 2433 | clear_current_source_symtab_and_line (); |
c906108c | 2434 | clear_pc_function_cache (); |
11cf8741 JM |
2435 | if (target_new_objfile_hook) |
2436 | target_new_objfile_hook (NULL); | |
c906108c SS |
2437 | } |
2438 | ||
74b7792f AC |
2439 | static void |
2440 | clear_symtab_users_cleanup (void *ignore) | |
2441 | { | |
2442 | clear_symtab_users (); | |
2443 | } | |
2444 | ||
c906108c SS |
2445 | /* clear_symtab_users_once: |
2446 | ||
2447 | This function is run after symbol reading, or from a cleanup. | |
2448 | If an old symbol table was obsoleted, the old symbol table | |
2449 | has been blown away, but the other GDB data structures that may | |
2450 | reference it have not yet been cleared or re-directed. (The old | |
2451 | symtab was zapped, and the cleanup queued, in free_named_symtab() | |
2452 | below.) | |
2453 | ||
2454 | This function can be queued N times as a cleanup, or called | |
2455 | directly; it will do all the work the first time, and then will be a | |
2456 | no-op until the next time it is queued. This works by bumping a | |
2457 | counter at queueing time. Much later when the cleanup is run, or at | |
2458 | the end of symbol processing (in case the cleanup is discarded), if | |
2459 | the queued count is greater than the "done-count", we do the work | |
2460 | and set the done-count to the queued count. If the queued count is | |
2461 | less than or equal to the done-count, we just ignore the call. This | |
2462 | is needed because reading a single .o file will often replace many | |
2463 | symtabs (one per .h file, for example), and we don't want to reset | |
2464 | the breakpoints N times in the user's face. | |
2465 | ||
2466 | The reason we both queue a cleanup, and call it directly after symbol | |
2467 | reading, is because the cleanup protects us in case of errors, but is | |
2468 | discarded if symbol reading is successful. */ | |
2469 | ||
2470 | #if 0 | |
2471 | /* FIXME: As free_named_symtabs is currently a big noop this function | |
2472 | is no longer needed. */ | |
a14ed312 | 2473 | static void clear_symtab_users_once (void); |
c906108c SS |
2474 | |
2475 | static int clear_symtab_users_queued; | |
2476 | static int clear_symtab_users_done; | |
2477 | ||
2478 | static void | |
fba45db2 | 2479 | clear_symtab_users_once (void) |
c906108c SS |
2480 | { |
2481 | /* Enforce once-per-`do_cleanups'-semantics */ | |
2482 | if (clear_symtab_users_queued <= clear_symtab_users_done) | |
2483 | return; | |
2484 | clear_symtab_users_done = clear_symtab_users_queued; | |
2485 | ||
2486 | clear_symtab_users (); | |
2487 | } | |
2488 | #endif | |
2489 | ||
2490 | /* Delete the specified psymtab, and any others that reference it. */ | |
2491 | ||
2492 | static void | |
fba45db2 | 2493 | cashier_psymtab (struct partial_symtab *pst) |
c906108c SS |
2494 | { |
2495 | struct partial_symtab *ps, *pprev = NULL; | |
2496 | int i; | |
2497 | ||
2498 | /* Find its previous psymtab in the chain */ | |
c5aa993b JM |
2499 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) |
2500 | { | |
2501 | if (ps == pst) | |
2502 | break; | |
2503 | pprev = ps; | |
2504 | } | |
c906108c | 2505 | |
c5aa993b JM |
2506 | if (ps) |
2507 | { | |
2508 | /* Unhook it from the chain. */ | |
2509 | if (ps == pst->objfile->psymtabs) | |
2510 | pst->objfile->psymtabs = ps->next; | |
2511 | else | |
2512 | pprev->next = ps->next; | |
2513 | ||
2514 | /* FIXME, we can't conveniently deallocate the entries in the | |
2515 | partial_symbol lists (global_psymbols/static_psymbols) that | |
2516 | this psymtab points to. These just take up space until all | |
2517 | the psymtabs are reclaimed. Ditto the dependencies list and | |
2518 | filename, which are all in the psymbol_obstack. */ | |
2519 | ||
2520 | /* We need to cashier any psymtab that has this one as a dependency... */ | |
2521 | again: | |
2522 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) | |
2523 | { | |
2524 | for (i = 0; i < ps->number_of_dependencies; i++) | |
2525 | { | |
2526 | if (ps->dependencies[i] == pst) | |
2527 | { | |
2528 | cashier_psymtab (ps); | |
2529 | goto again; /* Must restart, chain has been munged. */ | |
2530 | } | |
2531 | } | |
c906108c | 2532 | } |
c906108c | 2533 | } |
c906108c SS |
2534 | } |
2535 | ||
2536 | /* If a symtab or psymtab for filename NAME is found, free it along | |
2537 | with any dependent breakpoints, displays, etc. | |
2538 | Used when loading new versions of object modules with the "add-file" | |
2539 | command. This is only called on the top-level symtab or psymtab's name; | |
2540 | it is not called for subsidiary files such as .h files. | |
2541 | ||
2542 | Return value is 1 if we blew away the environment, 0 if not. | |
7e73cedf | 2543 | FIXME. The return value appears to never be used. |
c906108c SS |
2544 | |
2545 | FIXME. I think this is not the best way to do this. We should | |
2546 | work on being gentler to the environment while still cleaning up | |
2547 | all stray pointers into the freed symtab. */ | |
2548 | ||
2549 | int | |
fba45db2 | 2550 | free_named_symtabs (char *name) |
c906108c SS |
2551 | { |
2552 | #if 0 | |
2553 | /* FIXME: With the new method of each objfile having it's own | |
2554 | psymtab list, this function needs serious rethinking. In particular, | |
2555 | why was it ever necessary to toss psymtabs with specific compilation | |
2556 | unit filenames, as opposed to all psymtabs from a particular symbol | |
2557 | file? -- fnf | |
2558 | Well, the answer is that some systems permit reloading of particular | |
2559 | compilation units. We want to blow away any old info about these | |
2560 | compilation units, regardless of which objfiles they arrived in. --gnu. */ | |
2561 | ||
2562 | register struct symtab *s; | |
2563 | register struct symtab *prev; | |
2564 | register struct partial_symtab *ps; | |
2565 | struct blockvector *bv; | |
2566 | int blewit = 0; | |
2567 | ||
2568 | /* We only wack things if the symbol-reload switch is set. */ | |
2569 | if (!symbol_reloading) | |
2570 | return 0; | |
2571 | ||
2572 | /* Some symbol formats have trouble providing file names... */ | |
2573 | if (name == 0 || *name == '\0') | |
2574 | return 0; | |
2575 | ||
2576 | /* Look for a psymtab with the specified name. */ | |
2577 | ||
2578 | again2: | |
c5aa993b JM |
2579 | for (ps = partial_symtab_list; ps; ps = ps->next) |
2580 | { | |
2581 | if (STREQ (name, ps->filename)) | |
2582 | { | |
2583 | cashier_psymtab (ps); /* Blow it away...and its little dog, too. */ | |
2584 | goto again2; /* Must restart, chain has been munged */ | |
2585 | } | |
c906108c | 2586 | } |
c906108c SS |
2587 | |
2588 | /* Look for a symtab with the specified name. */ | |
2589 | ||
2590 | for (s = symtab_list; s; s = s->next) | |
2591 | { | |
2592 | if (STREQ (name, s->filename)) | |
2593 | break; | |
2594 | prev = s; | |
2595 | } | |
2596 | ||
2597 | if (s) | |
2598 | { | |
2599 | if (s == symtab_list) | |
2600 | symtab_list = s->next; | |
2601 | else | |
2602 | prev->next = s->next; | |
2603 | ||
2604 | /* For now, queue a delete for all breakpoints, displays, etc., whether | |
c5aa993b JM |
2605 | or not they depend on the symtab being freed. This should be |
2606 | changed so that only those data structures affected are deleted. */ | |
c906108c SS |
2607 | |
2608 | /* But don't delete anything if the symtab is empty. | |
c5aa993b JM |
2609 | This test is necessary due to a bug in "dbxread.c" that |
2610 | causes empty symtabs to be created for N_SO symbols that | |
2611 | contain the pathname of the object file. (This problem | |
2612 | has been fixed in GDB 3.9x). */ | |
c906108c SS |
2613 | |
2614 | bv = BLOCKVECTOR (s); | |
2615 | if (BLOCKVECTOR_NBLOCKS (bv) > 2 | |
2616 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) | |
2617 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK))) | |
2618 | { | |
b9caf505 AC |
2619 | complaint (&symfile_complaints, "Replacing old symbols for `%s'", |
2620 | name); | |
c906108c SS |
2621 | clear_symtab_users_queued++; |
2622 | make_cleanup (clear_symtab_users_once, 0); | |
2623 | blewit = 1; | |
c5aa993b JM |
2624 | } |
2625 | else | |
2626 | { | |
b9caf505 AC |
2627 | complaint (&symfile_complaints, "Empty symbol table found for `%s'", |
2628 | name); | |
c906108c SS |
2629 | } |
2630 | ||
2631 | free_symtab (s); | |
2632 | } | |
2633 | else | |
2634 | { | |
2635 | /* It is still possible that some breakpoints will be affected | |
c5aa993b JM |
2636 | even though no symtab was found, since the file might have |
2637 | been compiled without debugging, and hence not be associated | |
2638 | with a symtab. In order to handle this correctly, we would need | |
2639 | to keep a list of text address ranges for undebuggable files. | |
2640 | For now, we do nothing, since this is a fairly obscure case. */ | |
c906108c SS |
2641 | ; |
2642 | } | |
2643 | ||
2644 | /* FIXME, what about the minimal symbol table? */ | |
2645 | return blewit; | |
2646 | #else | |
2647 | return (0); | |
2648 | #endif | |
2649 | } | |
2650 | \f | |
2651 | /* Allocate and partially fill a partial symtab. It will be | |
2652 | completely filled at the end of the symbol list. | |
2653 | ||
d4f3574e | 2654 | FILENAME is the name of the symbol-file we are reading from. */ |
c906108c SS |
2655 | |
2656 | struct partial_symtab * | |
fba45db2 KB |
2657 | start_psymtab_common (struct objfile *objfile, |
2658 | struct section_offsets *section_offsets, char *filename, | |
2659 | CORE_ADDR textlow, struct partial_symbol **global_syms, | |
2660 | struct partial_symbol **static_syms) | |
c906108c SS |
2661 | { |
2662 | struct partial_symtab *psymtab; | |
2663 | ||
2664 | psymtab = allocate_psymtab (filename, objfile); | |
c5aa993b JM |
2665 | psymtab->section_offsets = section_offsets; |
2666 | psymtab->textlow = textlow; | |
2667 | psymtab->texthigh = psymtab->textlow; /* default */ | |
2668 | psymtab->globals_offset = global_syms - objfile->global_psymbols.list; | |
2669 | psymtab->statics_offset = static_syms - objfile->static_psymbols.list; | |
c906108c SS |
2670 | return (psymtab); |
2671 | } | |
2672 | \f | |
2673 | /* Add a symbol with a long value to a psymtab. | |
2674 | Since one arg is a struct, we pass in a ptr and deref it (sigh). */ | |
2675 | ||
2676 | void | |
fba45db2 KB |
2677 | add_psymbol_to_list (char *name, int namelength, namespace_enum namespace, |
2678 | enum address_class class, | |
2679 | struct psymbol_allocation_list *list, long val, /* Value as a long */ | |
2680 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ | |
2681 | enum language language, struct objfile *objfile) | |
c906108c SS |
2682 | { |
2683 | register struct partial_symbol *psym; | |
2684 | char *buf = alloca (namelength + 1); | |
2685 | /* psymbol is static so that there will be no uninitialized gaps in the | |
2686 | structure which might contain random data, causing cache misses in | |
2687 | bcache. */ | |
2688 | static struct partial_symbol psymbol; | |
2689 | ||
2690 | /* Create local copy of the partial symbol */ | |
2691 | memcpy (buf, name, namelength); | |
2692 | buf[namelength] = '\0'; | |
c906108c SS |
2693 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ |
2694 | if (val != 0) | |
2695 | { | |
2696 | SYMBOL_VALUE (&psymbol) = val; | |
2697 | } | |
2698 | else | |
2699 | { | |
2700 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; | |
2701 | } | |
2702 | SYMBOL_SECTION (&psymbol) = 0; | |
2703 | SYMBOL_LANGUAGE (&psymbol) = language; | |
2704 | PSYMBOL_NAMESPACE (&psymbol) = namespace; | |
2705 | PSYMBOL_CLASS (&psymbol) = class; | |
2de7ced7 DJ |
2706 | |
2707 | SYMBOL_SET_NAMES (&psymbol, buf, namelength, objfile); | |
c906108c SS |
2708 | |
2709 | /* Stash the partial symbol away in the cache */ | |
af5f3db6 | 2710 | psym = bcache (&psymbol, sizeof (struct partial_symbol), objfile->psymbol_cache); |
c906108c SS |
2711 | |
2712 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ | |
2713 | if (list->next >= list->list + list->size) | |
2714 | { | |
2715 | extend_psymbol_list (list, objfile); | |
2716 | } | |
2717 | *list->next++ = psym; | |
2718 | OBJSTAT (objfile, n_psyms++); | |
2719 | } | |
2720 | ||
2721 | /* Add a symbol with a long value to a psymtab. This differs from | |
2722 | * add_psymbol_to_list above in taking both a mangled and a demangled | |
2723 | * name. */ | |
2724 | ||
2725 | void | |
fba45db2 KB |
2726 | add_psymbol_with_dem_name_to_list (char *name, int namelength, char *dem_name, |
2727 | int dem_namelength, namespace_enum namespace, | |
2728 | enum address_class class, | |
2729 | struct psymbol_allocation_list *list, long val, /* Value as a long */ | |
2730 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ | |
2731 | enum language language, | |
2732 | struct objfile *objfile) | |
c906108c SS |
2733 | { |
2734 | register struct partial_symbol *psym; | |
2735 | char *buf = alloca (namelength + 1); | |
2736 | /* psymbol is static so that there will be no uninitialized gaps in the | |
2737 | structure which might contain random data, causing cache misses in | |
2738 | bcache. */ | |
2739 | static struct partial_symbol psymbol; | |
2740 | ||
2741 | /* Create local copy of the partial symbol */ | |
2742 | ||
2743 | memcpy (buf, name, namelength); | |
2744 | buf[namelength] = '\0'; | |
af5f3db6 | 2745 | SYMBOL_NAME (&psymbol) = bcache (buf, namelength + 1, objfile->psymbol_cache); |
c906108c SS |
2746 | |
2747 | buf = alloca (dem_namelength + 1); | |
2748 | memcpy (buf, dem_name, dem_namelength); | |
2749 | buf[dem_namelength] = '\0'; | |
c5aa993b | 2750 | |
c906108c SS |
2751 | switch (language) |
2752 | { | |
c5aa993b JM |
2753 | case language_c: |
2754 | case language_cplus: | |
2755 | SYMBOL_CPLUS_DEMANGLED_NAME (&psymbol) = | |
af5f3db6 | 2756 | bcache (buf, dem_namelength + 1, objfile->psymbol_cache); |
c5aa993b | 2757 | break; |
c906108c SS |
2758 | /* FIXME What should be done for the default case? Ignoring for now. */ |
2759 | } | |
2760 | ||
2761 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ | |
2762 | if (val != 0) | |
2763 | { | |
2764 | SYMBOL_VALUE (&psymbol) = val; | |
2765 | } | |
2766 | else | |
2767 | { | |
2768 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; | |
2769 | } | |
2770 | SYMBOL_SECTION (&psymbol) = 0; | |
2771 | SYMBOL_LANGUAGE (&psymbol) = language; | |
2772 | PSYMBOL_NAMESPACE (&psymbol) = namespace; | |
2773 | PSYMBOL_CLASS (&psymbol) = class; | |
2774 | SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol, language); | |
2775 | ||
2776 | /* Stash the partial symbol away in the cache */ | |
af5f3db6 | 2777 | psym = bcache (&psymbol, sizeof (struct partial_symbol), objfile->psymbol_cache); |
c906108c SS |
2778 | |
2779 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ | |
2780 | if (list->next >= list->list + list->size) | |
2781 | { | |
2782 | extend_psymbol_list (list, objfile); | |
2783 | } | |
2784 | *list->next++ = psym; | |
2785 | OBJSTAT (objfile, n_psyms++); | |
2786 | } | |
2787 | ||
2788 | /* Initialize storage for partial symbols. */ | |
2789 | ||
2790 | void | |
fba45db2 | 2791 | init_psymbol_list (struct objfile *objfile, int total_symbols) |
c906108c SS |
2792 | { |
2793 | /* Free any previously allocated psymbol lists. */ | |
c5aa993b JM |
2794 | |
2795 | if (objfile->global_psymbols.list) | |
c906108c | 2796 | { |
4efb68b1 | 2797 | xmfree (objfile->md, objfile->global_psymbols.list); |
c906108c | 2798 | } |
c5aa993b | 2799 | if (objfile->static_psymbols.list) |
c906108c | 2800 | { |
4efb68b1 | 2801 | xmfree (objfile->md, objfile->static_psymbols.list); |
c906108c | 2802 | } |
c5aa993b | 2803 | |
c906108c SS |
2804 | /* Current best guess is that approximately a twentieth |
2805 | of the total symbols (in a debugging file) are global or static | |
2806 | oriented symbols */ | |
c906108c | 2807 | |
c5aa993b JM |
2808 | objfile->global_psymbols.size = total_symbols / 10; |
2809 | objfile->static_psymbols.size = total_symbols / 10; | |
2810 | ||
2811 | if (objfile->global_psymbols.size > 0) | |
c906108c | 2812 | { |
c5aa993b JM |
2813 | objfile->global_psymbols.next = |
2814 | objfile->global_psymbols.list = (struct partial_symbol **) | |
2815 | xmmalloc (objfile->md, (objfile->global_psymbols.size | |
2816 | * sizeof (struct partial_symbol *))); | |
c906108c | 2817 | } |
c5aa993b | 2818 | if (objfile->static_psymbols.size > 0) |
c906108c | 2819 | { |
c5aa993b JM |
2820 | objfile->static_psymbols.next = |
2821 | objfile->static_psymbols.list = (struct partial_symbol **) | |
2822 | xmmalloc (objfile->md, (objfile->static_psymbols.size | |
2823 | * sizeof (struct partial_symbol *))); | |
c906108c SS |
2824 | } |
2825 | } | |
2826 | ||
2827 | /* OVERLAYS: | |
2828 | The following code implements an abstraction for debugging overlay sections. | |
2829 | ||
2830 | The target model is as follows: | |
2831 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2832 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2833 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2834 | sections, one by one, from the load address into the VMA address. |
c906108c | 2835 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2836 | sections should be considered to be mapped from the VMA to the LMA. |
2837 | This information is used for symbol lookup, and memory read/write. | |
2838 | For instance, if a section has been mapped then its contents | |
2839 | should be read from the VMA, otherwise from the LMA. | |
c906108c SS |
2840 | |
2841 | Two levels of debugger support for overlays are available. One is | |
2842 | "manual", in which the debugger relies on the user to tell it which | |
2843 | overlays are currently mapped. This level of support is | |
2844 | implemented entirely in the core debugger, and the information about | |
2845 | whether a section is mapped is kept in the objfile->obj_section table. | |
2846 | ||
2847 | The second level of support is "automatic", and is only available if | |
2848 | the target-specific code provides functionality to read the target's | |
2849 | overlay mapping table, and translate its contents for the debugger | |
2850 | (by updating the mapped state information in the obj_section tables). | |
2851 | ||
2852 | The interface is as follows: | |
c5aa993b JM |
2853 | User commands: |
2854 | overlay map <name> -- tell gdb to consider this section mapped | |
2855 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2856 | overlay list -- list the sections that GDB thinks are mapped | |
2857 | overlay read-target -- get the target's state of what's mapped | |
2858 | overlay off/manual/auto -- set overlay debugging state | |
2859 | Functional interface: | |
2860 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2861 | section, return that section. | |
2862 | find_pc_overlay(pc): find any overlay section that contains | |
2863 | the pc, either in its VMA or its LMA | |
2864 | overlay_is_mapped(sect): true if overlay is marked as mapped | |
2865 | section_is_overlay(sect): true if section's VMA != LMA | |
2866 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2867 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 2868 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
2869 | overlay_mapped_address(...): map an address from section's LMA to VMA |
2870 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2871 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2872 | either in VMA or LMA depending on whether | |
2873 | the symbol's section is currently mapped | |
c906108c SS |
2874 | */ |
2875 | ||
2876 | /* Overlay debugging state: */ | |
2877 | ||
d874f1e2 | 2878 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c906108c SS |
2879 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state */ |
2880 | ||
2881 | /* Target vector for refreshing overlay mapped state */ | |
a14ed312 | 2882 | static void simple_overlay_update (struct obj_section *); |
507f3c78 | 2883 | void (*target_overlay_update) (struct obj_section *) = simple_overlay_update; |
c906108c SS |
2884 | |
2885 | /* Function: section_is_overlay (SECTION) | |
2886 | Returns true if SECTION has VMA not equal to LMA, ie. | |
2887 | SECTION is loaded at an address different from where it will "run". */ | |
2888 | ||
2889 | int | |
fba45db2 | 2890 | section_is_overlay (asection *section) |
c906108c | 2891 | { |
fbd35540 MS |
2892 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ |
2893 | ||
c906108c SS |
2894 | if (overlay_debugging) |
2895 | if (section && section->lma != 0 && | |
2896 | section->vma != section->lma) | |
2897 | return 1; | |
2898 | ||
2899 | return 0; | |
2900 | } | |
2901 | ||
2902 | /* Function: overlay_invalidate_all (void) | |
2903 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
2904 | ||
2905 | static void | |
fba45db2 | 2906 | overlay_invalidate_all (void) |
c906108c | 2907 | { |
c5aa993b | 2908 | struct objfile *objfile; |
c906108c SS |
2909 | struct obj_section *sect; |
2910 | ||
2911 | ALL_OBJSECTIONS (objfile, sect) | |
2912 | if (section_is_overlay (sect->the_bfd_section)) | |
c5aa993b | 2913 | sect->ovly_mapped = -1; |
c906108c SS |
2914 | } |
2915 | ||
2916 | /* Function: overlay_is_mapped (SECTION) | |
2917 | Returns true if section is an overlay, and is currently mapped. | |
2918 | Private: public access is thru function section_is_mapped. | |
2919 | ||
2920 | Access to the ovly_mapped flag is restricted to this function, so | |
2921 | that we can do automatic update. If the global flag | |
2922 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
2923 | overlay_invalidate_all. If the mapped state of the particular | |
2924 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
2925 | ||
c5aa993b | 2926 | static int |
fba45db2 | 2927 | overlay_is_mapped (struct obj_section *osect) |
c906108c SS |
2928 | { |
2929 | if (osect == 0 || !section_is_overlay (osect->the_bfd_section)) | |
2930 | return 0; | |
2931 | ||
c5aa993b | 2932 | switch (overlay_debugging) |
c906108c SS |
2933 | { |
2934 | default: | |
d874f1e2 | 2935 | case ovly_off: |
c5aa993b | 2936 | return 0; /* overlay debugging off */ |
d874f1e2 | 2937 | case ovly_auto: /* overlay debugging automatic */ |
c906108c | 2938 | /* Unles there is a target_overlay_update function, |
c5aa993b | 2939 | there's really nothing useful to do here (can't really go auto) */ |
c906108c SS |
2940 | if (target_overlay_update) |
2941 | { | |
2942 | if (overlay_cache_invalid) | |
2943 | { | |
2944 | overlay_invalidate_all (); | |
2945 | overlay_cache_invalid = 0; | |
2946 | } | |
2947 | if (osect->ovly_mapped == -1) | |
2948 | (*target_overlay_update) (osect); | |
2949 | } | |
2950 | /* fall thru to manual case */ | |
d874f1e2 | 2951 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
2952 | return osect->ovly_mapped == 1; |
2953 | } | |
2954 | } | |
2955 | ||
2956 | /* Function: section_is_mapped | |
2957 | Returns true if section is an overlay, and is currently mapped. */ | |
2958 | ||
2959 | int | |
fba45db2 | 2960 | section_is_mapped (asection *section) |
c906108c | 2961 | { |
c5aa993b | 2962 | struct objfile *objfile; |
c906108c SS |
2963 | struct obj_section *osect; |
2964 | ||
2965 | if (overlay_debugging) | |
2966 | if (section && section_is_overlay (section)) | |
2967 | ALL_OBJSECTIONS (objfile, osect) | |
2968 | if (osect->the_bfd_section == section) | |
c5aa993b | 2969 | return overlay_is_mapped (osect); |
c906108c SS |
2970 | |
2971 | return 0; | |
2972 | } | |
2973 | ||
2974 | /* Function: pc_in_unmapped_range | |
2975 | If PC falls into the lma range of SECTION, return true, else false. */ | |
2976 | ||
2977 | CORE_ADDR | |
fba45db2 | 2978 | pc_in_unmapped_range (CORE_ADDR pc, asection *section) |
c906108c | 2979 | { |
fbd35540 MS |
2980 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ |
2981 | ||
c906108c SS |
2982 | int size; |
2983 | ||
2984 | if (overlay_debugging) | |
2985 | if (section && section_is_overlay (section)) | |
2986 | { | |
2987 | size = bfd_get_section_size_before_reloc (section); | |
2988 | if (section->lma <= pc && pc < section->lma + size) | |
2989 | return 1; | |
2990 | } | |
2991 | return 0; | |
2992 | } | |
2993 | ||
2994 | /* Function: pc_in_mapped_range | |
2995 | If PC falls into the vma range of SECTION, return true, else false. */ | |
2996 | ||
2997 | CORE_ADDR | |
fba45db2 | 2998 | pc_in_mapped_range (CORE_ADDR pc, asection *section) |
c906108c | 2999 | { |
fbd35540 MS |
3000 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ |
3001 | ||
c906108c SS |
3002 | int size; |
3003 | ||
3004 | if (overlay_debugging) | |
3005 | if (section && section_is_overlay (section)) | |
3006 | { | |
3007 | size = bfd_get_section_size_before_reloc (section); | |
3008 | if (section->vma <= pc && pc < section->vma + size) | |
3009 | return 1; | |
3010 | } | |
3011 | return 0; | |
3012 | } | |
3013 | ||
9ec8e6a0 JB |
3014 | |
3015 | /* Return true if the mapped ranges of sections A and B overlap, false | |
3016 | otherwise. */ | |
3017 | int | |
3018 | sections_overlap (asection *a, asection *b) | |
3019 | { | |
fbd35540 MS |
3020 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ |
3021 | ||
9ec8e6a0 JB |
3022 | CORE_ADDR a_start = a->vma; |
3023 | CORE_ADDR a_end = a->vma + bfd_get_section_size_before_reloc (a); | |
3024 | CORE_ADDR b_start = b->vma; | |
3025 | CORE_ADDR b_end = b->vma + bfd_get_section_size_before_reloc (b); | |
3026 | ||
3027 | return (a_start < b_end && b_start < a_end); | |
3028 | } | |
3029 | ||
c906108c SS |
3030 | /* Function: overlay_unmapped_address (PC, SECTION) |
3031 | Returns the address corresponding to PC in the unmapped (load) range. | |
3032 | May be the same as PC. */ | |
3033 | ||
3034 | CORE_ADDR | |
fba45db2 | 3035 | overlay_unmapped_address (CORE_ADDR pc, asection *section) |
c906108c | 3036 | { |
fbd35540 MS |
3037 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ |
3038 | ||
c906108c SS |
3039 | if (overlay_debugging) |
3040 | if (section && section_is_overlay (section) && | |
3041 | pc_in_mapped_range (pc, section)) | |
3042 | return pc + section->lma - section->vma; | |
3043 | ||
3044 | return pc; | |
3045 | } | |
3046 | ||
3047 | /* Function: overlay_mapped_address (PC, SECTION) | |
3048 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3049 | May be the same as PC. */ | |
3050 | ||
3051 | CORE_ADDR | |
fba45db2 | 3052 | overlay_mapped_address (CORE_ADDR pc, asection *section) |
c906108c | 3053 | { |
fbd35540 MS |
3054 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ |
3055 | ||
c906108c SS |
3056 | if (overlay_debugging) |
3057 | if (section && section_is_overlay (section) && | |
3058 | pc_in_unmapped_range (pc, section)) | |
3059 | return pc + section->vma - section->lma; | |
3060 | ||
3061 | return pc; | |
3062 | } | |
3063 | ||
3064 | ||
3065 | /* Function: symbol_overlayed_address | |
3066 | Return one of two addresses (relative to the VMA or to the LMA), | |
3067 | depending on whether the section is mapped or not. */ | |
3068 | ||
c5aa993b | 3069 | CORE_ADDR |
fba45db2 | 3070 | symbol_overlayed_address (CORE_ADDR address, asection *section) |
c906108c SS |
3071 | { |
3072 | if (overlay_debugging) | |
3073 | { | |
3074 | /* If the symbol has no section, just return its regular address. */ | |
3075 | if (section == 0) | |
3076 | return address; | |
3077 | /* If the symbol's section is not an overlay, just return its address */ | |
3078 | if (!section_is_overlay (section)) | |
3079 | return address; | |
3080 | /* If the symbol's section is mapped, just return its address */ | |
3081 | if (section_is_mapped (section)) | |
3082 | return address; | |
3083 | /* | |
3084 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3085 | * then return its LOADED address rather than its vma address!! | |
3086 | */ | |
3087 | return overlay_unmapped_address (address, section); | |
3088 | } | |
3089 | return address; | |
3090 | } | |
3091 | ||
3092 | /* Function: find_pc_overlay (PC) | |
3093 | Return the best-match overlay section for PC: | |
3094 | If PC matches a mapped overlay section's VMA, return that section. | |
3095 | Else if PC matches an unmapped section's VMA, return that section. | |
3096 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3097 | ||
3098 | asection * | |
fba45db2 | 3099 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3100 | { |
c5aa993b | 3101 | struct objfile *objfile; |
c906108c SS |
3102 | struct obj_section *osect, *best_match = NULL; |
3103 | ||
3104 | if (overlay_debugging) | |
3105 | ALL_OBJSECTIONS (objfile, osect) | |
3106 | if (section_is_overlay (osect->the_bfd_section)) | |
c5aa993b JM |
3107 | { |
3108 | if (pc_in_mapped_range (pc, osect->the_bfd_section)) | |
3109 | { | |
3110 | if (overlay_is_mapped (osect)) | |
3111 | return osect->the_bfd_section; | |
3112 | else | |
3113 | best_match = osect; | |
3114 | } | |
3115 | else if (pc_in_unmapped_range (pc, osect->the_bfd_section)) | |
3116 | best_match = osect; | |
3117 | } | |
c906108c SS |
3118 | return best_match ? best_match->the_bfd_section : NULL; |
3119 | } | |
3120 | ||
3121 | /* Function: find_pc_mapped_section (PC) | |
3122 | If PC falls into the VMA address range of an overlay section that is | |
3123 | currently marked as MAPPED, return that section. Else return NULL. */ | |
3124 | ||
3125 | asection * | |
fba45db2 | 3126 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3127 | { |
c5aa993b | 3128 | struct objfile *objfile; |
c906108c SS |
3129 | struct obj_section *osect; |
3130 | ||
3131 | if (overlay_debugging) | |
3132 | ALL_OBJSECTIONS (objfile, osect) | |
3133 | if (pc_in_mapped_range (pc, osect->the_bfd_section) && | |
3134 | overlay_is_mapped (osect)) | |
c5aa993b | 3135 | return osect->the_bfd_section; |
c906108c SS |
3136 | |
3137 | return NULL; | |
3138 | } | |
3139 | ||
3140 | /* Function: list_overlays_command | |
3141 | Print a list of mapped sections and their PC ranges */ | |
3142 | ||
3143 | void | |
fba45db2 | 3144 | list_overlays_command (char *args, int from_tty) |
c906108c | 3145 | { |
c5aa993b JM |
3146 | int nmapped = 0; |
3147 | struct objfile *objfile; | |
c906108c SS |
3148 | struct obj_section *osect; |
3149 | ||
3150 | if (overlay_debugging) | |
3151 | ALL_OBJSECTIONS (objfile, osect) | |
3152 | if (overlay_is_mapped (osect)) | |
c5aa993b JM |
3153 | { |
3154 | const char *name; | |
3155 | bfd_vma lma, vma; | |
3156 | int size; | |
3157 | ||
3158 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
3159 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
3160 | size = bfd_get_section_size_before_reloc (osect->the_bfd_section); | |
3161 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); | |
3162 | ||
3163 | printf_filtered ("Section %s, loaded at ", name); | |
3164 | print_address_numeric (lma, 1, gdb_stdout); | |
3165 | puts_filtered (" - "); | |
3166 | print_address_numeric (lma + size, 1, gdb_stdout); | |
3167 | printf_filtered (", mapped at "); | |
3168 | print_address_numeric (vma, 1, gdb_stdout); | |
3169 | puts_filtered (" - "); | |
3170 | print_address_numeric (vma + size, 1, gdb_stdout); | |
3171 | puts_filtered ("\n"); | |
3172 | ||
3173 | nmapped++; | |
3174 | } | |
c906108c SS |
3175 | if (nmapped == 0) |
3176 | printf_filtered ("No sections are mapped.\n"); | |
3177 | } | |
3178 | ||
3179 | /* Function: map_overlay_command | |
3180 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3181 | ||
3182 | void | |
fba45db2 | 3183 | map_overlay_command (char *args, int from_tty) |
c906108c | 3184 | { |
c5aa993b JM |
3185 | struct objfile *objfile, *objfile2; |
3186 | struct obj_section *sec, *sec2; | |
3187 | asection *bfdsec; | |
c906108c SS |
3188 | |
3189 | if (!overlay_debugging) | |
515ad16c EZ |
3190 | error ("\ |
3191 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ | |
3192 | the 'overlay manual' command."); | |
c906108c SS |
3193 | |
3194 | if (args == 0 || *args == 0) | |
3195 | error ("Argument required: name of an overlay section"); | |
3196 | ||
3197 | /* First, find a section matching the user supplied argument */ | |
3198 | ALL_OBJSECTIONS (objfile, sec) | |
3199 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3200 | { |
3201 | /* Now, check to see if the section is an overlay. */ | |
3202 | bfdsec = sec->the_bfd_section; | |
3203 | if (!section_is_overlay (bfdsec)) | |
3204 | continue; /* not an overlay section */ | |
3205 | ||
3206 | /* Mark the overlay as "mapped" */ | |
3207 | sec->ovly_mapped = 1; | |
3208 | ||
3209 | /* Next, make a pass and unmap any sections that are | |
3210 | overlapped by this new section: */ | |
3211 | ALL_OBJSECTIONS (objfile2, sec2) | |
9ec8e6a0 JB |
3212 | if (sec2->ovly_mapped |
3213 | && sec != sec2 | |
3214 | && sec->the_bfd_section != sec2->the_bfd_section | |
3215 | && sections_overlap (sec->the_bfd_section, | |
3216 | sec2->the_bfd_section)) | |
c5aa993b JM |
3217 | { |
3218 | if (info_verbose) | |
3219 | printf_filtered ("Note: section %s unmapped by overlap\n", | |
3220 | bfd_section_name (objfile->obfd, | |
3221 | sec2->the_bfd_section)); | |
3222 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2 */ | |
3223 | } | |
3224 | return; | |
3225 | } | |
c906108c SS |
3226 | error ("No overlay section called %s", args); |
3227 | } | |
3228 | ||
3229 | /* Function: unmap_overlay_command | |
3230 | Mark the overlay section as unmapped | |
3231 | (ie. resident in its LMA address range, rather than the VMA range). */ | |
3232 | ||
3233 | void | |
fba45db2 | 3234 | unmap_overlay_command (char *args, int from_tty) |
c906108c | 3235 | { |
c5aa993b | 3236 | struct objfile *objfile; |
c906108c SS |
3237 | struct obj_section *sec; |
3238 | ||
3239 | if (!overlay_debugging) | |
515ad16c EZ |
3240 | error ("\ |
3241 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ | |
3242 | the 'overlay manual' command."); | |
c906108c SS |
3243 | |
3244 | if (args == 0 || *args == 0) | |
3245 | error ("Argument required: name of an overlay section"); | |
3246 | ||
3247 | /* First, find a section matching the user supplied argument */ | |
3248 | ALL_OBJSECTIONS (objfile, sec) | |
3249 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3250 | { |
3251 | if (!sec->ovly_mapped) | |
3252 | error ("Section %s is not mapped", args); | |
3253 | sec->ovly_mapped = 0; | |
3254 | return; | |
3255 | } | |
c906108c SS |
3256 | error ("No overlay section called %s", args); |
3257 | } | |
3258 | ||
3259 | /* Function: overlay_auto_command | |
3260 | A utility command to turn on overlay debugging. | |
3261 | Possibly this should be done via a set/show command. */ | |
3262 | ||
3263 | static void | |
fba45db2 | 3264 | overlay_auto_command (char *args, int from_tty) |
c906108c | 3265 | { |
d874f1e2 | 3266 | overlay_debugging = ovly_auto; |
1900040c | 3267 | enable_overlay_breakpoints (); |
c906108c SS |
3268 | if (info_verbose) |
3269 | printf_filtered ("Automatic overlay debugging enabled."); | |
3270 | } | |
3271 | ||
3272 | /* Function: overlay_manual_command | |
3273 | A utility command to turn on overlay debugging. | |
3274 | Possibly this should be done via a set/show command. */ | |
3275 | ||
3276 | static void | |
fba45db2 | 3277 | overlay_manual_command (char *args, int from_tty) |
c906108c | 3278 | { |
d874f1e2 | 3279 | overlay_debugging = ovly_on; |
1900040c | 3280 | disable_overlay_breakpoints (); |
c906108c SS |
3281 | if (info_verbose) |
3282 | printf_filtered ("Overlay debugging enabled."); | |
3283 | } | |
3284 | ||
3285 | /* Function: overlay_off_command | |
3286 | A utility command to turn on overlay debugging. | |
3287 | Possibly this should be done via a set/show command. */ | |
3288 | ||
3289 | static void | |
fba45db2 | 3290 | overlay_off_command (char *args, int from_tty) |
c906108c | 3291 | { |
d874f1e2 | 3292 | overlay_debugging = ovly_off; |
1900040c | 3293 | disable_overlay_breakpoints (); |
c906108c SS |
3294 | if (info_verbose) |
3295 | printf_filtered ("Overlay debugging disabled."); | |
3296 | } | |
3297 | ||
3298 | static void | |
fba45db2 | 3299 | overlay_load_command (char *args, int from_tty) |
c906108c SS |
3300 | { |
3301 | if (target_overlay_update) | |
3302 | (*target_overlay_update) (NULL); | |
3303 | else | |
3304 | error ("This target does not know how to read its overlay state."); | |
3305 | } | |
3306 | ||
3307 | /* Function: overlay_command | |
3308 | A place-holder for a mis-typed command */ | |
3309 | ||
3310 | /* Command list chain containing all defined "overlay" subcommands. */ | |
3311 | struct cmd_list_element *overlaylist; | |
3312 | ||
3313 | static void | |
fba45db2 | 3314 | overlay_command (char *args, int from_tty) |
c906108c | 3315 | { |
c5aa993b | 3316 | printf_unfiltered |
c906108c SS |
3317 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
3318 | help_list (overlaylist, "overlay ", -1, gdb_stdout); | |
3319 | } | |
3320 | ||
3321 | ||
3322 | /* Target Overlays for the "Simplest" overlay manager: | |
3323 | ||
3324 | This is GDB's default target overlay layer. It works with the | |
3325 | minimal overlay manager supplied as an example by Cygnus. The | |
3326 | entry point is via a function pointer "target_overlay_update", | |
3327 | so targets that use a different runtime overlay manager can | |
3328 | substitute their own overlay_update function and take over the | |
3329 | function pointer. | |
3330 | ||
3331 | The overlay_update function pokes around in the target's data structures | |
3332 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3333 | this information. | |
3334 | ||
3335 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3336 | unsigned _novlys; /# number of overlay sections #/ |
3337 | unsigned _ovly_table[_novlys][4] = { | |
3338 | {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/ | |
3339 | {..., ..., ..., ...}, | |
3340 | } | |
3341 | unsigned _novly_regions; /# number of overlay regions #/ | |
3342 | unsigned _ovly_region_table[_novly_regions][3] = { | |
3343 | {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ | |
3344 | {..., ..., ...}, | |
3345 | } | |
c906108c SS |
3346 | These functions will attempt to update GDB's mappedness state in the |
3347 | symbol section table, based on the target's mappedness state. | |
3348 | ||
3349 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3350 | attempt to detect when the cached copy is invalidated. The main | |
3351 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3352 | the cached table and re-reads only the entry for that section from | |
3353 | the target (whenever possible). | |
3354 | */ | |
3355 | ||
3356 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3357 | static unsigned (*cache_ovly_table)[4] = 0; |
c906108c | 3358 | #if 0 |
c5aa993b | 3359 | static unsigned (*cache_ovly_region_table)[3] = 0; |
c906108c | 3360 | #endif |
c5aa993b | 3361 | static unsigned cache_novlys = 0; |
c906108c | 3362 | #if 0 |
c5aa993b | 3363 | static unsigned cache_novly_regions = 0; |
c906108c SS |
3364 | #endif |
3365 | static CORE_ADDR cache_ovly_table_base = 0; | |
3366 | #if 0 | |
3367 | static CORE_ADDR cache_ovly_region_table_base = 0; | |
3368 | #endif | |
c5aa993b JM |
3369 | enum ovly_index |
3370 | { | |
3371 | VMA, SIZE, LMA, MAPPED | |
3372 | }; | |
c906108c SS |
3373 | #define TARGET_LONG_BYTES (TARGET_LONG_BIT / TARGET_CHAR_BIT) |
3374 | ||
3375 | /* Throw away the cached copy of _ovly_table */ | |
3376 | static void | |
fba45db2 | 3377 | simple_free_overlay_table (void) |
c906108c SS |
3378 | { |
3379 | if (cache_ovly_table) | |
b8c9b27d | 3380 | xfree (cache_ovly_table); |
c5aa993b | 3381 | cache_novlys = 0; |
c906108c SS |
3382 | cache_ovly_table = NULL; |
3383 | cache_ovly_table_base = 0; | |
3384 | } | |
3385 | ||
3386 | #if 0 | |
3387 | /* Throw away the cached copy of _ovly_region_table */ | |
3388 | static void | |
fba45db2 | 3389 | simple_free_overlay_region_table (void) |
c906108c SS |
3390 | { |
3391 | if (cache_ovly_region_table) | |
b8c9b27d | 3392 | xfree (cache_ovly_region_table); |
c5aa993b | 3393 | cache_novly_regions = 0; |
c906108c SS |
3394 | cache_ovly_region_table = NULL; |
3395 | cache_ovly_region_table_base = 0; | |
3396 | } | |
3397 | #endif | |
3398 | ||
3399 | /* Read an array of ints from the target into a local buffer. | |
3400 | Convert to host order. int LEN is number of ints */ | |
3401 | static void | |
fba45db2 | 3402 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, int len) |
c906108c | 3403 | { |
34c0bd93 | 3404 | /* FIXME (alloca): Not safe if array is very large. */ |
c906108c | 3405 | char *buf = alloca (len * TARGET_LONG_BYTES); |
c5aa993b | 3406 | int i; |
c906108c SS |
3407 | |
3408 | read_memory (memaddr, buf, len * TARGET_LONG_BYTES); | |
3409 | for (i = 0; i < len; i++) | |
c5aa993b | 3410 | myaddr[i] = extract_unsigned_integer (TARGET_LONG_BYTES * i + buf, |
c906108c SS |
3411 | TARGET_LONG_BYTES); |
3412 | } | |
3413 | ||
3414 | /* Find and grab a copy of the target _ovly_table | |
3415 | (and _novlys, which is needed for the table's size) */ | |
c5aa993b | 3416 | static int |
fba45db2 | 3417 | simple_read_overlay_table (void) |
c906108c | 3418 | { |
0d43edd1 | 3419 | struct minimal_symbol *novlys_msym, *ovly_table_msym; |
c906108c SS |
3420 | |
3421 | simple_free_overlay_table (); | |
9b27852e | 3422 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
0d43edd1 | 3423 | if (! novlys_msym) |
c906108c | 3424 | { |
0d43edd1 JB |
3425 | error ("Error reading inferior's overlay table: " |
3426 | "couldn't find `_novlys' variable\n" | |
3427 | "in inferior. Use `overlay manual' mode."); | |
3428 | return 0; | |
c906108c | 3429 | } |
0d43edd1 | 3430 | |
9b27852e | 3431 | ovly_table_msym = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
0d43edd1 JB |
3432 | if (! ovly_table_msym) |
3433 | { | |
3434 | error ("Error reading inferior's overlay table: couldn't find " | |
3435 | "`_ovly_table' array\n" | |
3436 | "in inferior. Use `overlay manual' mode."); | |
3437 | return 0; | |
3438 | } | |
3439 | ||
3440 | cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (novlys_msym), 4); | |
3441 | cache_ovly_table | |
3442 | = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); | |
3443 | cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (ovly_table_msym); | |
3444 | read_target_long_array (cache_ovly_table_base, | |
3445 | (int *) cache_ovly_table, | |
3446 | cache_novlys * 4); | |
3447 | ||
c5aa993b | 3448 | return 1; /* SUCCESS */ |
c906108c SS |
3449 | } |
3450 | ||
3451 | #if 0 | |
3452 | /* Find and grab a copy of the target _ovly_region_table | |
3453 | (and _novly_regions, which is needed for the table's size) */ | |
c5aa993b | 3454 | static int |
fba45db2 | 3455 | simple_read_overlay_region_table (void) |
c906108c SS |
3456 | { |
3457 | struct minimal_symbol *msym; | |
3458 | ||
3459 | simple_free_overlay_region_table (); | |
9b27852e | 3460 | msym = lookup_minimal_symbol ("_novly_regions", NULL, NULL); |
c906108c SS |
3461 | if (msym != NULL) |
3462 | cache_novly_regions = read_memory_integer (SYMBOL_VALUE_ADDRESS (msym), 4); | |
c5aa993b JM |
3463 | else |
3464 | return 0; /* failure */ | |
c906108c SS |
3465 | cache_ovly_region_table = (void *) xmalloc (cache_novly_regions * 12); |
3466 | if (cache_ovly_region_table != NULL) | |
3467 | { | |
9b27852e | 3468 | msym = lookup_minimal_symbol ("_ovly_region_table", NULL, NULL); |
c906108c SS |
3469 | if (msym != NULL) |
3470 | { | |
3471 | cache_ovly_region_table_base = SYMBOL_VALUE_ADDRESS (msym); | |
c5aa993b JM |
3472 | read_target_long_array (cache_ovly_region_table_base, |
3473 | (int *) cache_ovly_region_table, | |
c906108c SS |
3474 | cache_novly_regions * 3); |
3475 | } | |
c5aa993b JM |
3476 | else |
3477 | return 0; /* failure */ | |
c906108c | 3478 | } |
c5aa993b JM |
3479 | else |
3480 | return 0; /* failure */ | |
3481 | return 1; /* SUCCESS */ | |
c906108c SS |
3482 | } |
3483 | #endif | |
3484 | ||
3485 | /* Function: simple_overlay_update_1 | |
3486 | A helper function for simple_overlay_update. Assuming a cached copy | |
3487 | of _ovly_table exists, look through it to find an entry whose vma, | |
3488 | lma and size match those of OSECT. Re-read the entry and make sure | |
3489 | it still matches OSECT (else the table may no longer be valid). | |
3490 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3491 | success, 0 for failure. */ | |
3492 | ||
3493 | static int | |
fba45db2 | 3494 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c SS |
3495 | { |
3496 | int i, size; | |
fbd35540 MS |
3497 | bfd *obfd = osect->objfile->obfd; |
3498 | asection *bsect = osect->the_bfd_section; | |
c906108c SS |
3499 | |
3500 | size = bfd_get_section_size_before_reloc (osect->the_bfd_section); | |
3501 | for (i = 0; i < cache_novlys; i++) | |
fbd35540 MS |
3502 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3503 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3504 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3505 | { |
3506 | read_target_long_array (cache_ovly_table_base + i * TARGET_LONG_BYTES, | |
3507 | (int *) cache_ovly_table[i], 4); | |
fbd35540 MS |
3508 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3509 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3510 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3511 | { |
3512 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3513 | return 1; | |
3514 | } | |
fbd35540 | 3515 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3516 | return 0; |
3517 | } | |
3518 | return 0; | |
3519 | } | |
3520 | ||
3521 | /* Function: simple_overlay_update | |
3522 | If OSECT is NULL, then update all sections' mapped state | |
3523 | (after re-reading the entire target _ovly_table). | |
3524 | If OSECT is non-NULL, then try to find a matching entry in the | |
3525 | cached ovly_table and update only OSECT's mapped state. | |
3526 | If a cached entry can't be found or the cache isn't valid, then | |
3527 | re-read the entire cache, and go ahead and update all sections. */ | |
3528 | ||
3529 | static void | |
fba45db2 | 3530 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3531 | { |
c5aa993b | 3532 | struct objfile *objfile; |
c906108c SS |
3533 | |
3534 | /* Were we given an osect to look up? NULL means do all of them. */ | |
3535 | if (osect) | |
3536 | /* Have we got a cached copy of the target's overlay table? */ | |
3537 | if (cache_ovly_table != NULL) | |
3538 | /* Does its cached location match what's currently in the symtab? */ | |
c5aa993b | 3539 | if (cache_ovly_table_base == |
9b27852e | 3540 | SYMBOL_VALUE_ADDRESS (lookup_minimal_symbol ("_ovly_table", NULL, NULL))) |
c906108c SS |
3541 | /* Then go ahead and try to look up this single section in the cache */ |
3542 | if (simple_overlay_update_1 (osect)) | |
3543 | /* Found it! We're done. */ | |
3544 | return; | |
3545 | ||
3546 | /* Cached table no good: need to read the entire table anew. | |
3547 | Or else we want all the sections, in which case it's actually | |
3548 | more efficient to read the whole table in one block anyway. */ | |
3549 | ||
0d43edd1 JB |
3550 | if (! simple_read_overlay_table ()) |
3551 | return; | |
3552 | ||
c906108c SS |
3553 | /* Now may as well update all sections, even if only one was requested. */ |
3554 | ALL_OBJSECTIONS (objfile, osect) | |
3555 | if (section_is_overlay (osect->the_bfd_section)) | |
c5aa993b JM |
3556 | { |
3557 | int i, size; | |
fbd35540 MS |
3558 | bfd *obfd = osect->objfile->obfd; |
3559 | asection *bsect = osect->the_bfd_section; | |
c5aa993b JM |
3560 | |
3561 | size = bfd_get_section_size_before_reloc (osect->the_bfd_section); | |
3562 | for (i = 0; i < cache_novlys; i++) | |
fbd35540 MS |
3563 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3564 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3565 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
3566 | { /* obj_section matches i'th entry in ovly_table */ | |
c5aa993b JM |
3567 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; |
3568 | break; /* finished with inner for loop: break out */ | |
3569 | } | |
3570 | } | |
c906108c SS |
3571 | } |
3572 | ||
086df311 DJ |
3573 | /* Set the output sections and output offsets for section SECTP in |
3574 | ABFD. The relocation code in BFD will read these offsets, so we | |
3575 | need to be sure they're initialized. We map each section to itself, | |
3576 | with no offset; this means that SECTP->vma will be honored. */ | |
3577 | ||
3578 | static void | |
3579 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3580 | { | |
3581 | sectp->output_section = sectp; | |
3582 | sectp->output_offset = 0; | |
3583 | } | |
3584 | ||
3585 | /* Relocate the contents of a debug section SECTP in ABFD. The | |
3586 | contents are stored in BUF if it is non-NULL, or returned in a | |
3587 | malloc'd buffer otherwise. | |
3588 | ||
3589 | For some platforms and debug info formats, shared libraries contain | |
3590 | relocations against the debug sections (particularly for DWARF-2; | |
3591 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3592 | the version of the linker in use). Also, ELF object files naturally | |
3593 | have unresolved relocations for their debug sections. We need to apply | |
3594 | the relocations in order to get the locations of symbols correct. */ | |
3595 | ||
3596 | bfd_byte * | |
3597 | symfile_relocate_debug_section (bfd *abfd, asection *sectp, bfd_byte *buf) | |
3598 | { | |
3599 | /* We're only interested in debugging sections with relocation | |
3600 | information. */ | |
3601 | if ((sectp->flags & SEC_RELOC) == 0) | |
3602 | return NULL; | |
3603 | if ((sectp->flags & SEC_DEBUGGING) == 0) | |
3604 | return NULL; | |
3605 | ||
3606 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3607 | all sections begin at 0. */ | |
3608 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3609 | ||
3610 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf); | |
3611 | } | |
c906108c SS |
3612 | |
3613 | void | |
fba45db2 | 3614 | _initialize_symfile (void) |
c906108c SS |
3615 | { |
3616 | struct cmd_list_element *c; | |
c5aa993b | 3617 | |
c906108c | 3618 | c = add_cmd ("symbol-file", class_files, symbol_file_command, |
c5aa993b | 3619 | "Load symbol table from executable file FILE.\n\ |
c906108c SS |
3620 | The `file' command can also load symbol tables, as well as setting the file\n\ |
3621 | to execute.", &cmdlist); | |
5ba2abeb | 3622 | set_cmd_completer (c, filename_completer); |
c906108c SS |
3623 | |
3624 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, | |
db162d44 | 3625 | "Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR> ...]\n\ |
c906108c | 3626 | Load the symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
2acceee2 | 3627 | ADDR is the starting address of the file's text.\n\ |
db162d44 EZ |
3628 | The optional arguments are section-name section-address pairs and\n\ |
3629 | should be specified if the data and bss segments are not contiguous\n\ | |
d4654627 | 3630 | with the text. SECT is a section name to be loaded at SECT_ADDR.", |
c906108c | 3631 | &cmdlist); |
5ba2abeb | 3632 | set_cmd_completer (c, filename_completer); |
c906108c SS |
3633 | |
3634 | c = add_cmd ("add-shared-symbol-files", class_files, | |
3635 | add_shared_symbol_files_command, | |
3636 | "Load the symbols from shared objects in the dynamic linker's link map.", | |
c5aa993b | 3637 | &cmdlist); |
c906108c SS |
3638 | c = add_alias_cmd ("assf", "add-shared-symbol-files", class_files, 1, |
3639 | &cmdlist); | |
3640 | ||
3641 | c = add_cmd ("load", class_files, load_command, | |
c5aa993b | 3642 | "Dynamically load FILE into the running program, and record its symbols\n\ |
c906108c | 3643 | for access from GDB.", &cmdlist); |
5ba2abeb | 3644 | set_cmd_completer (c, filename_completer); |
c906108c SS |
3645 | |
3646 | add_show_from_set | |
3647 | (add_set_cmd ("symbol-reloading", class_support, var_boolean, | |
c5aa993b JM |
3648 | (char *) &symbol_reloading, |
3649 | "Set dynamic symbol table reloading multiple times in one run.", | |
c906108c SS |
3650 | &setlist), |
3651 | &showlist); | |
3652 | ||
c5aa993b JM |
3653 | add_prefix_cmd ("overlay", class_support, overlay_command, |
3654 | "Commands for debugging overlays.", &overlaylist, | |
c906108c SS |
3655 | "overlay ", 0, &cmdlist); |
3656 | ||
3657 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3658 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3659 | ||
c5aa993b | 3660 | add_cmd ("map-overlay", class_support, map_overlay_command, |
c906108c SS |
3661 | "Assert that an overlay section is mapped.", &overlaylist); |
3662 | ||
c5aa993b | 3663 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
c906108c SS |
3664 | "Assert that an overlay section is unmapped.", &overlaylist); |
3665 | ||
c5aa993b | 3666 | add_cmd ("list-overlays", class_support, list_overlays_command, |
c906108c SS |
3667 | "List mappings of overlay sections.", &overlaylist); |
3668 | ||
c5aa993b | 3669 | add_cmd ("manual", class_support, overlay_manual_command, |
c906108c | 3670 | "Enable overlay debugging.", &overlaylist); |
c5aa993b | 3671 | add_cmd ("off", class_support, overlay_off_command, |
c906108c | 3672 | "Disable overlay debugging.", &overlaylist); |
c5aa993b | 3673 | add_cmd ("auto", class_support, overlay_auto_command, |
c906108c | 3674 | "Enable automatic overlay debugging.", &overlaylist); |
c5aa993b | 3675 | add_cmd ("load-target", class_support, overlay_load_command, |
c906108c SS |
3676 | "Read the overlay mapping state from the target.", &overlaylist); |
3677 | ||
3678 | /* Filename extension to source language lookup table: */ | |
3679 | init_filename_language_table (); | |
3680 | c = add_set_cmd ("extension-language", class_files, var_string_noescape, | |
c5aa993b | 3681 | (char *) &ext_args, |
c906108c SS |
3682 | "Set mapping between filename extension and source language.\n\ |
3683 | Usage: set extension-language .foo bar", | |
c5aa993b | 3684 | &setlist); |
9f60d481 | 3685 | set_cmd_cfunc (c, set_ext_lang_command); |
c906108c | 3686 | |
c5aa993b | 3687 | add_info ("extensions", info_ext_lang_command, |
c906108c | 3688 | "All filename extensions associated with a source language."); |
917317f4 JM |
3689 | |
3690 | add_show_from_set | |
3691 | (add_set_cmd ("download-write-size", class_obscure, | |
3692 | var_integer, (char *) &download_write_size, | |
3693 | "Set the write size used when downloading a program.\n" | |
3694 | "Only used when downloading a program onto a remote\n" | |
3695 | "target. Specify zero, or a negative value, to disable\n" | |
3696 | "blocked writes. The actual size of each transfer is also\n" | |
3697 | "limited by the size of the target packet and the memory\n" | |
3698 | "cache.\n", | |
3699 | &setlist), | |
3700 | &showlist); | |
5b5d99cf JB |
3701 | |
3702 | debug_file_directory = xstrdup (DEBUGDIR); | |
3703 | c = (add_set_cmd | |
3704 | ("debug-file-directory", class_support, var_string, | |
3705 | (char *) &debug_file_directory, | |
3706 | "Set the directory where separate debug symbols are searched for.\n" | |
3707 | "Separate debug symbols are first searched for in the same\n" | |
3708 | "directory as the binary, then in the `" DEBUG_SUBDIRECTORY | |
3709 | "' subdirectory,\n" | |
3710 | "and lastly at the path of the directory of the binary with\n" | |
3711 | "the global debug-file directory prepended\n", | |
3712 | &setlist)); | |
3713 | add_show_from_set (c, &showlist); | |
3714 | set_cmd_completer (c, filename_completer); | |
c906108c | 3715 | } |