Commit | Line | Data |
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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, | |
4 | 1999, 2000, 2001, 2002 Free Software Foundation, Inc. | |
5 | ||
c906108c SS |
6 | Contributed by Cygnus Support, using pieces from other GDB modules. |
7 | ||
c5aa993b | 8 | This file is part of GDB. |
c906108c | 9 | |
c5aa993b JM |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2 of the License, or | |
13 | (at your option) any later version. | |
c906108c | 14 | |
c5aa993b JM |
15 | This program is distributed in the hope that it will be useful, |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
c906108c | 19 | |
c5aa993b JM |
20 | You should have received a copy of the GNU General Public License |
21 | along with this program; if not, write to the Free Software | |
22 | Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
24 | |
25 | #include "defs.h" | |
26 | #include "symtab.h" | |
27 | #include "gdbtypes.h" | |
28 | #include "gdbcore.h" | |
29 | #include "frame.h" | |
30 | #include "target.h" | |
31 | #include "value.h" | |
32 | #include "symfile.h" | |
33 | #include "objfiles.h" | |
34 | #include "gdbcmd.h" | |
35 | #include "breakpoint.h" | |
36 | #include "language.h" | |
37 | #include "complaints.h" | |
38 | #include "demangle.h" | |
c5aa993b | 39 | #include "inferior.h" /* for write_pc */ |
c906108c | 40 | #include "gdb-stabs.h" |
04ea0df1 | 41 | #include "gdb_obstack.h" |
d75b5104 | 42 | #include "completer.h" |
af5f3db6 | 43 | #include "bcache.h" |
c906108c | 44 | |
c906108c SS |
45 | #include <sys/types.h> |
46 | #include <fcntl.h> | |
47 | #include "gdb_string.h" | |
48 | #include "gdb_stat.h" | |
49 | #include <ctype.h> | |
50 | #include <time.h> | |
c906108c SS |
51 | |
52 | #ifndef O_BINARY | |
53 | #define O_BINARY 0 | |
54 | #endif | |
55 | ||
56 | #ifdef HPUXHPPA | |
57 | ||
58 | /* Some HP-UX related globals to clear when a new "main" | |
59 | symbol file is loaded. HP-specific. */ | |
60 | ||
61 | extern int hp_som_som_object_present; | |
62 | extern int hp_cxx_exception_support_initialized; | |
63 | #define RESET_HP_UX_GLOBALS() do {\ | |
64 | hp_som_som_object_present = 0; /* indicates HP-compiled code */ \ | |
65 | hp_cxx_exception_support_initialized = 0; /* must reinitialize exception stuff */ \ | |
66 | } while (0) | |
67 | #endif | |
68 | ||
917317f4 | 69 | int (*ui_load_progress_hook) (const char *section, unsigned long num); |
c2d11a7d JM |
70 | void (*show_load_progress) (const char *section, |
71 | unsigned long section_sent, | |
72 | unsigned long section_size, | |
73 | unsigned long total_sent, | |
74 | unsigned long total_size); | |
507f3c78 KB |
75 | void (*pre_add_symbol_hook) (char *); |
76 | void (*post_add_symbol_hook) (void); | |
77 | void (*target_new_objfile_hook) (struct objfile *); | |
c906108c | 78 | |
74b7792f AC |
79 | static void clear_symtab_users_cleanup (void *ignore); |
80 | ||
c906108c | 81 | /* Global variables owned by this file */ |
c5aa993b | 82 | int readnow_symbol_files; /* Read full symbols immediately */ |
c906108c | 83 | |
c5aa993b JM |
84 | struct complaint oldsyms_complaint = |
85 | { | |
c906108c SS |
86 | "Replacing old symbols for `%s'", 0, 0 |
87 | }; | |
88 | ||
c5aa993b JM |
89 | struct complaint empty_symtab_complaint = |
90 | { | |
c906108c SS |
91 | "Empty symbol table found for `%s'", 0, 0 |
92 | }; | |
93 | ||
2acceee2 JM |
94 | struct complaint unknown_option_complaint = |
95 | { | |
96 | "Unknown option `%s' ignored", 0, 0 | |
97 | }; | |
98 | ||
c906108c SS |
99 | /* External variables and functions referenced. */ |
100 | ||
a14ed312 | 101 | extern void report_transfer_performance (unsigned long, time_t, time_t); |
c906108c SS |
102 | |
103 | /* Functions this file defines */ | |
104 | ||
105 | #if 0 | |
a14ed312 KB |
106 | static int simple_read_overlay_region_table (void); |
107 | static void simple_free_overlay_region_table (void); | |
c906108c SS |
108 | #endif |
109 | ||
a14ed312 | 110 | static void set_initial_language (void); |
c906108c | 111 | |
a14ed312 | 112 | static void load_command (char *, int); |
c906108c | 113 | |
d7db6da9 FN |
114 | static void symbol_file_add_main_1 (char *args, int from_tty, int flags); |
115 | ||
a14ed312 | 116 | static void add_symbol_file_command (char *, int); |
c906108c | 117 | |
a14ed312 | 118 | static void add_shared_symbol_files_command (char *, int); |
c906108c | 119 | |
a14ed312 | 120 | static void cashier_psymtab (struct partial_symtab *); |
c906108c | 121 | |
a14ed312 | 122 | bfd *symfile_bfd_open (char *); |
c906108c | 123 | |
0e931cf0 JB |
124 | int get_section_index (struct objfile *, char *); |
125 | ||
a14ed312 | 126 | static void find_sym_fns (struct objfile *); |
c906108c | 127 | |
a14ed312 | 128 | static void decrement_reading_symtab (void *); |
c906108c | 129 | |
a14ed312 | 130 | static void overlay_invalidate_all (void); |
c906108c | 131 | |
a14ed312 | 132 | static int overlay_is_mapped (struct obj_section *); |
c906108c | 133 | |
a14ed312 | 134 | void list_overlays_command (char *, int); |
c906108c | 135 | |
a14ed312 | 136 | void map_overlay_command (char *, int); |
c906108c | 137 | |
a14ed312 | 138 | void unmap_overlay_command (char *, int); |
c906108c | 139 | |
a14ed312 | 140 | static void overlay_auto_command (char *, int); |
c906108c | 141 | |
a14ed312 | 142 | static void overlay_manual_command (char *, int); |
c906108c | 143 | |
a14ed312 | 144 | static void overlay_off_command (char *, int); |
c906108c | 145 | |
a14ed312 | 146 | static void overlay_load_command (char *, int); |
c906108c | 147 | |
a14ed312 | 148 | static void overlay_command (char *, int); |
c906108c | 149 | |
a14ed312 | 150 | static void simple_free_overlay_table (void); |
c906108c | 151 | |
a14ed312 | 152 | static void read_target_long_array (CORE_ADDR, unsigned int *, int); |
c906108c | 153 | |
a14ed312 | 154 | static int simple_read_overlay_table (void); |
c906108c | 155 | |
a14ed312 | 156 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 157 | |
a14ed312 | 158 | static void add_filename_language (char *ext, enum language lang); |
392a587b | 159 | |
a14ed312 | 160 | static void set_ext_lang_command (char *args, int from_tty); |
392a587b | 161 | |
a14ed312 | 162 | static void info_ext_lang_command (char *args, int from_tty); |
392a587b | 163 | |
a14ed312 | 164 | static void init_filename_language_table (void); |
392a587b | 165 | |
a14ed312 | 166 | void _initialize_symfile (void); |
c906108c SS |
167 | |
168 | /* List of all available sym_fns. On gdb startup, each object file reader | |
169 | calls add_symtab_fns() to register information on each format it is | |
170 | prepared to read. */ | |
171 | ||
172 | static struct sym_fns *symtab_fns = NULL; | |
173 | ||
174 | /* Flag for whether user will be reloading symbols multiple times. | |
175 | Defaults to ON for VxWorks, otherwise OFF. */ | |
176 | ||
177 | #ifdef SYMBOL_RELOADING_DEFAULT | |
178 | int symbol_reloading = SYMBOL_RELOADING_DEFAULT; | |
179 | #else | |
180 | int symbol_reloading = 0; | |
181 | #endif | |
182 | ||
b7209cb4 FF |
183 | /* If non-zero, shared library symbols will be added automatically |
184 | when the inferior is created, new libraries are loaded, or when | |
185 | attaching to the inferior. This is almost always what users will | |
186 | want to have happen; but for very large programs, the startup time | |
187 | will be excessive, and so if this is a problem, the user can clear | |
188 | this flag and then add the shared library symbols as needed. Note | |
189 | that there is a potential for confusion, since if the shared | |
c906108c | 190 | library symbols are not loaded, commands like "info fun" will *not* |
b7209cb4 | 191 | report all the functions that are actually present. */ |
c906108c SS |
192 | |
193 | int auto_solib_add = 1; | |
b7209cb4 FF |
194 | |
195 | /* For systems that support it, a threshold size in megabytes. If | |
196 | automatically adding a new library's symbol table to those already | |
197 | known to the debugger would cause the total shared library symbol | |
198 | size to exceed this threshhold, then the shlib's symbols are not | |
199 | added. The threshold is ignored if the user explicitly asks for a | |
200 | shlib to be added, such as when using the "sharedlibrary" | |
201 | command. */ | |
202 | ||
203 | int auto_solib_limit; | |
c906108c | 204 | \f |
c5aa993b | 205 | |
c906108c SS |
206 | /* Since this function is called from within qsort, in an ANSI environment |
207 | it must conform to the prototype for qsort, which specifies that the | |
208 | comparison function takes two "void *" pointers. */ | |
209 | ||
210 | static int | |
0cd64fe2 | 211 | compare_symbols (const void *s1p, const void *s2p) |
c906108c SS |
212 | { |
213 | register struct symbol **s1, **s2; | |
214 | ||
215 | s1 = (struct symbol **) s1p; | |
216 | s2 = (struct symbol **) s2p; | |
494b7ec9 | 217 | return (strcmp (SYMBOL_SOURCE_NAME (*s1), SYMBOL_SOURCE_NAME (*s2))); |
c906108c SS |
218 | } |
219 | ||
220 | /* | |
221 | ||
c5aa993b | 222 | LOCAL FUNCTION |
c906108c | 223 | |
c5aa993b | 224 | compare_psymbols -- compare two partial symbols by name |
c906108c | 225 | |
c5aa993b | 226 | DESCRIPTION |
c906108c | 227 | |
c5aa993b JM |
228 | Given pointers to pointers to two partial symbol table entries, |
229 | compare them by name and return -N, 0, or +N (ala strcmp). | |
230 | Typically used by sorting routines like qsort(). | |
c906108c | 231 | |
c5aa993b | 232 | NOTES |
c906108c | 233 | |
c5aa993b JM |
234 | Does direct compare of first two characters before punting |
235 | and passing to strcmp for longer compares. Note that the | |
236 | original version had a bug whereby two null strings or two | |
237 | identically named one character strings would return the | |
238 | comparison of memory following the null byte. | |
c906108c SS |
239 | |
240 | */ | |
241 | ||
242 | static int | |
0cd64fe2 | 243 | compare_psymbols (const void *s1p, const void *s2p) |
c906108c | 244 | { |
fba7f19c EZ |
245 | register struct partial_symbol **s1, **s2; |
246 | register char *st1, *st2; | |
247 | ||
248 | s1 = (struct partial_symbol **) s1p; | |
249 | s2 = (struct partial_symbol **) s2p; | |
250 | st1 = SYMBOL_SOURCE_NAME (*s1); | |
251 | st2 = SYMBOL_SOURCE_NAME (*s2); | |
252 | ||
c906108c SS |
253 | |
254 | if ((st1[0] - st2[0]) || !st1[0]) | |
255 | { | |
256 | return (st1[0] - st2[0]); | |
257 | } | |
258 | else if ((st1[1] - st2[1]) || !st1[1]) | |
259 | { | |
260 | return (st1[1] - st2[1]); | |
261 | } | |
262 | else | |
263 | { | |
c5aa993b | 264 | return (strcmp (st1, st2)); |
c906108c SS |
265 | } |
266 | } | |
267 | ||
268 | void | |
fba45db2 | 269 | sort_pst_symbols (struct partial_symtab *pst) |
c906108c SS |
270 | { |
271 | /* Sort the global list; don't sort the static list */ | |
272 | ||
c5aa993b JM |
273 | qsort (pst->objfile->global_psymbols.list + pst->globals_offset, |
274 | pst->n_global_syms, sizeof (struct partial_symbol *), | |
c906108c SS |
275 | compare_psymbols); |
276 | } | |
277 | ||
278 | /* Call sort_block_syms to sort alphabetically the symbols of one block. */ | |
279 | ||
280 | void | |
fba45db2 | 281 | sort_block_syms (register struct block *b) |
c906108c SS |
282 | { |
283 | qsort (&BLOCK_SYM (b, 0), BLOCK_NSYMS (b), | |
284 | sizeof (struct symbol *), compare_symbols); | |
285 | } | |
286 | ||
287 | /* Call sort_symtab_syms to sort alphabetically | |
288 | the symbols of each block of one symtab. */ | |
289 | ||
290 | void | |
fba45db2 | 291 | sort_symtab_syms (register struct symtab *s) |
c906108c SS |
292 | { |
293 | register struct blockvector *bv; | |
294 | int nbl; | |
295 | int i; | |
296 | register struct block *b; | |
297 | ||
298 | if (s == 0) | |
299 | return; | |
300 | bv = BLOCKVECTOR (s); | |
301 | nbl = BLOCKVECTOR_NBLOCKS (bv); | |
302 | for (i = 0; i < nbl; i++) | |
303 | { | |
304 | b = BLOCKVECTOR_BLOCK (bv, i); | |
305 | if (BLOCK_SHOULD_SORT (b)) | |
306 | sort_block_syms (b); | |
307 | } | |
308 | } | |
309 | ||
310 | /* Make a null terminated copy of the string at PTR with SIZE characters in | |
311 | the obstack pointed to by OBSTACKP . Returns the address of the copy. | |
312 | Note that the string at PTR does not have to be null terminated, I.E. it | |
313 | may be part of a larger string and we are only saving a substring. */ | |
314 | ||
315 | char * | |
fba45db2 | 316 | obsavestring (char *ptr, int size, struct obstack *obstackp) |
c906108c SS |
317 | { |
318 | register char *p = (char *) obstack_alloc (obstackp, size + 1); | |
319 | /* Open-coded memcpy--saves function call time. These strings are usually | |
320 | short. FIXME: Is this really still true with a compiler that can | |
321 | inline memcpy? */ | |
322 | { | |
323 | register char *p1 = ptr; | |
324 | register char *p2 = p; | |
325 | char *end = ptr + size; | |
326 | while (p1 != end) | |
327 | *p2++ = *p1++; | |
328 | } | |
329 | p[size] = 0; | |
330 | return p; | |
331 | } | |
332 | ||
333 | /* Concatenate strings S1, S2 and S3; return the new string. Space is found | |
334 | in the obstack pointed to by OBSTACKP. */ | |
335 | ||
336 | char * | |
fba45db2 KB |
337 | obconcat (struct obstack *obstackp, const char *s1, const char *s2, |
338 | const char *s3) | |
c906108c SS |
339 | { |
340 | register int len = strlen (s1) + strlen (s2) + strlen (s3) + 1; | |
341 | register char *val = (char *) obstack_alloc (obstackp, len); | |
342 | strcpy (val, s1); | |
343 | strcat (val, s2); | |
344 | strcat (val, s3); | |
345 | return val; | |
346 | } | |
347 | ||
348 | /* True if we are nested inside psymtab_to_symtab. */ | |
349 | ||
350 | int currently_reading_symtab = 0; | |
351 | ||
352 | static void | |
fba45db2 | 353 | decrement_reading_symtab (void *dummy) |
c906108c SS |
354 | { |
355 | currently_reading_symtab--; | |
356 | } | |
357 | ||
358 | /* Get the symbol table that corresponds to a partial_symtab. | |
359 | This is fast after the first time you do it. In fact, there | |
360 | is an even faster macro PSYMTAB_TO_SYMTAB that does the fast | |
361 | case inline. */ | |
362 | ||
363 | struct symtab * | |
fba45db2 | 364 | psymtab_to_symtab (register struct partial_symtab *pst) |
c906108c SS |
365 | { |
366 | /* If it's been looked up before, return it. */ | |
367 | if (pst->symtab) | |
368 | return pst->symtab; | |
369 | ||
370 | /* If it has not yet been read in, read it. */ | |
371 | if (!pst->readin) | |
c5aa993b | 372 | { |
c906108c SS |
373 | struct cleanup *back_to = make_cleanup (decrement_reading_symtab, NULL); |
374 | currently_reading_symtab++; | |
375 | (*pst->read_symtab) (pst); | |
376 | do_cleanups (back_to); | |
377 | } | |
378 | ||
379 | return pst->symtab; | |
380 | } | |
381 | ||
382 | /* Initialize entry point information for this objfile. */ | |
383 | ||
384 | void | |
fba45db2 | 385 | init_entry_point_info (struct objfile *objfile) |
c906108c SS |
386 | { |
387 | /* Save startup file's range of PC addresses to help blockframe.c | |
388 | decide where the bottom of the stack is. */ | |
389 | ||
c5aa993b | 390 | if (bfd_get_file_flags (objfile->obfd) & EXEC_P) |
c906108c SS |
391 | { |
392 | /* Executable file -- record its entry point so we'll recognize | |
c5aa993b JM |
393 | the startup file because it contains the entry point. */ |
394 | objfile->ei.entry_point = bfd_get_start_address (objfile->obfd); | |
c906108c SS |
395 | } |
396 | else | |
397 | { | |
398 | /* Examination of non-executable.o files. Short-circuit this stuff. */ | |
c5aa993b | 399 | objfile->ei.entry_point = INVALID_ENTRY_POINT; |
c906108c | 400 | } |
c5aa993b JM |
401 | objfile->ei.entry_file_lowpc = INVALID_ENTRY_LOWPC; |
402 | objfile->ei.entry_file_highpc = INVALID_ENTRY_HIGHPC; | |
403 | objfile->ei.entry_func_lowpc = INVALID_ENTRY_LOWPC; | |
404 | objfile->ei.entry_func_highpc = INVALID_ENTRY_HIGHPC; | |
405 | objfile->ei.main_func_lowpc = INVALID_ENTRY_LOWPC; | |
406 | objfile->ei.main_func_highpc = INVALID_ENTRY_HIGHPC; | |
c906108c SS |
407 | } |
408 | ||
409 | /* Get current entry point address. */ | |
410 | ||
411 | CORE_ADDR | |
fba45db2 | 412 | entry_point_address (void) |
c906108c SS |
413 | { |
414 | return symfile_objfile ? symfile_objfile->ei.entry_point : 0; | |
415 | } | |
416 | ||
417 | /* Remember the lowest-addressed loadable section we've seen. | |
418 | This function is called via bfd_map_over_sections. | |
419 | ||
420 | In case of equal vmas, the section with the largest size becomes the | |
421 | lowest-addressed loadable section. | |
422 | ||
423 | If the vmas and sizes are equal, the last section is considered the | |
424 | lowest-addressed loadable section. */ | |
425 | ||
426 | void | |
fba45db2 | 427 | find_lowest_section (bfd *abfd, asection *sect, PTR obj) |
c906108c | 428 | { |
c5aa993b | 429 | asection **lowest = (asection **) obj; |
c906108c SS |
430 | |
431 | if (0 == (bfd_get_section_flags (abfd, sect) & SEC_LOAD)) | |
432 | return; | |
433 | if (!*lowest) | |
434 | *lowest = sect; /* First loadable section */ | |
435 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
436 | *lowest = sect; /* A lower loadable section */ | |
437 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
438 | && (bfd_section_size (abfd, (*lowest)) | |
439 | <= bfd_section_size (abfd, sect))) | |
440 | *lowest = sect; | |
441 | } | |
442 | ||
62557bbc KB |
443 | |
444 | /* Build (allocate and populate) a section_addr_info struct from | |
445 | an existing section table. */ | |
446 | ||
447 | extern struct section_addr_info * | |
448 | build_section_addr_info_from_section_table (const struct section_table *start, | |
449 | const struct section_table *end) | |
450 | { | |
451 | struct section_addr_info *sap; | |
452 | const struct section_table *stp; | |
453 | int oidx; | |
454 | ||
455 | sap = xmalloc (sizeof (struct section_addr_info)); | |
456 | memset (sap, 0, sizeof (struct section_addr_info)); | |
457 | ||
458 | for (stp = start, oidx = 0; stp != end; stp++) | |
459 | { | |
fbd35540 MS |
460 | if (bfd_get_section_flags (stp->bfd, |
461 | stp->the_bfd_section) & (SEC_ALLOC | SEC_LOAD) | |
62557bbc KB |
462 | && oidx < MAX_SECTIONS) |
463 | { | |
464 | sap->other[oidx].addr = stp->addr; | |
fbd35540 MS |
465 | sap->other[oidx].name |
466 | = xstrdup (bfd_section_name (stp->bfd, stp->the_bfd_section)); | |
62557bbc KB |
467 | sap->other[oidx].sectindex = stp->the_bfd_section->index; |
468 | oidx++; | |
469 | } | |
470 | } | |
471 | ||
472 | return sap; | |
473 | } | |
474 | ||
475 | ||
476 | /* Free all memory allocated by build_section_addr_info_from_section_table. */ | |
477 | ||
478 | extern void | |
479 | free_section_addr_info (struct section_addr_info *sap) | |
480 | { | |
481 | int idx; | |
482 | ||
483 | for (idx = 0; idx < MAX_SECTIONS; idx++) | |
484 | if (sap->other[idx].name) | |
b8c9b27d KB |
485 | xfree (sap->other[idx].name); |
486 | xfree (sap); | |
62557bbc KB |
487 | } |
488 | ||
489 | ||
c906108c SS |
490 | /* Parse the user's idea of an offset for dynamic linking, into our idea |
491 | of how to represent it for fast symbol reading. This is the default | |
492 | version of the sym_fns.sym_offsets function for symbol readers that | |
493 | don't need to do anything special. It allocates a section_offsets table | |
494 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
495 | ||
d4f3574e | 496 | void |
fba45db2 KB |
497 | default_symfile_offsets (struct objfile *objfile, |
498 | struct section_addr_info *addrs) | |
c906108c | 499 | { |
c906108c | 500 | int i; |
b8fbeb18 | 501 | asection *sect = NULL; |
c906108c SS |
502 | |
503 | objfile->num_sections = SECT_OFF_MAX; | |
d4f3574e | 504 | objfile->section_offsets = (struct section_offsets *) |
c5aa993b | 505 | obstack_alloc (&objfile->psymbol_obstack, SIZEOF_SECTION_OFFSETS); |
d4f3574e | 506 | memset (objfile->section_offsets, 0, SIZEOF_SECTION_OFFSETS); |
c906108c | 507 | |
b8fbeb18 EZ |
508 | /* Now calculate offsets for section that were specified by the |
509 | caller. */ | |
2acceee2 JM |
510 | for (i = 0; i < MAX_SECTIONS && addrs->other[i].name; i++) |
511 | { | |
512 | struct other_sections *osp ; | |
513 | ||
514 | osp = &addrs->other[i] ; | |
b8fbeb18 | 515 | if (osp->addr == 0) |
2acceee2 | 516 | continue; |
b8fbeb18 | 517 | |
2acceee2 | 518 | /* Record all sections in offsets */ |
b8fbeb18 EZ |
519 | /* The section_offsets in the objfile are here filled in using |
520 | the BFD index. */ | |
a4c8257b | 521 | (objfile->section_offsets)->offsets[osp->sectindex] = osp->addr; |
2acceee2 | 522 | } |
c906108c | 523 | |
b8fbeb18 EZ |
524 | /* Remember the bfd indexes for the .text, .data, .bss and |
525 | .rodata sections. */ | |
526 | ||
527 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); | |
528 | if (sect) | |
529 | objfile->sect_index_text = sect->index; | |
530 | ||
531 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
532 | if (sect) | |
533 | objfile->sect_index_data = sect->index; | |
534 | ||
535 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
536 | if (sect) | |
537 | objfile->sect_index_bss = sect->index; | |
538 | ||
539 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
540 | if (sect) | |
541 | objfile->sect_index_rodata = sect->index; | |
542 | ||
bbcd32ad FF |
543 | /* This is where things get really weird... We MUST have valid |
544 | indices for the various sect_index_* members or gdb will abort. | |
545 | So if for example, there is no ".text" section, we have to | |
546 | accomodate that. Except when explicitly adding symbol files at | |
547 | some address, section_offsets contains nothing but zeros, so it | |
548 | doesn't matter which slot in section_offsets the individual | |
549 | sect_index_* members index into. So if they are all zero, it is | |
550 | safe to just point all the currently uninitialized indices to the | |
551 | first slot. */ | |
552 | ||
553 | for (i = 0; i < objfile->num_sections; i++) | |
554 | { | |
555 | if (ANOFFSET (objfile->section_offsets, i) != 0) | |
556 | { | |
557 | break; | |
558 | } | |
559 | } | |
560 | if (i == objfile->num_sections) | |
561 | { | |
562 | if (objfile->sect_index_text == -1) | |
563 | objfile->sect_index_text = 0; | |
564 | if (objfile->sect_index_data == -1) | |
565 | objfile->sect_index_data = 0; | |
566 | if (objfile->sect_index_bss == -1) | |
567 | objfile->sect_index_bss = 0; | |
568 | if (objfile->sect_index_rodata == -1) | |
569 | objfile->sect_index_rodata = 0; | |
570 | } | |
b8fbeb18 | 571 | } |
c906108c SS |
572 | |
573 | /* Process a symbol file, as either the main file or as a dynamically | |
574 | loaded file. | |
575 | ||
96baa820 JM |
576 | OBJFILE is where the symbols are to be read from. |
577 | ||
578 | ADDR is the address where the text segment was loaded, unless the | |
579 | objfile is the main symbol file, in which case it is zero. | |
580 | ||
581 | MAINLINE is nonzero if this is the main symbol file, or zero if | |
582 | it's an extra symbol file such as dynamically loaded code. | |
583 | ||
584 | VERBO is nonzero if the caller has printed a verbose message about | |
585 | the symbol reading (and complaints can be more terse about it). */ | |
c906108c SS |
586 | |
587 | void | |
fba45db2 KB |
588 | syms_from_objfile (struct objfile *objfile, struct section_addr_info *addrs, |
589 | int mainline, int verbo) | |
c906108c | 590 | { |
2acceee2 JM |
591 | asection *lower_sect; |
592 | asection *sect; | |
593 | CORE_ADDR lower_offset; | |
594 | struct section_addr_info local_addr; | |
c906108c | 595 | struct cleanup *old_chain; |
2acceee2 JM |
596 | int i; |
597 | ||
598 | /* If ADDRS is NULL, initialize the local section_addr_info struct and | |
599 | point ADDRS to it. We now establish the convention that an addr of | |
600 | zero means no load address was specified. */ | |
601 | ||
602 | if (addrs == NULL) | |
603 | { | |
604 | memset (&local_addr, 0, sizeof (local_addr)); | |
605 | addrs = &local_addr; | |
606 | } | |
c906108c SS |
607 | |
608 | init_entry_point_info (objfile); | |
609 | find_sym_fns (objfile); | |
610 | ||
75245b24 MS |
611 | if (objfile->sf == NULL) |
612 | return; /* No symbols. */ | |
613 | ||
c906108c SS |
614 | /* Make sure that partially constructed symbol tables will be cleaned up |
615 | if an error occurs during symbol reading. */ | |
74b7792f | 616 | old_chain = make_cleanup_free_objfile (objfile); |
c906108c | 617 | |
c5aa993b | 618 | if (mainline) |
c906108c SS |
619 | { |
620 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 621 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 622 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
623 | |
624 | /* Since no error yet, throw away the old symbol table. */ | |
625 | ||
626 | if (symfile_objfile != NULL) | |
627 | { | |
628 | free_objfile (symfile_objfile); | |
629 | symfile_objfile = NULL; | |
630 | } | |
631 | ||
632 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
633 | If the user wants to get rid of them, they should do "symbol-file" |
634 | without arguments first. Not sure this is the best behavior | |
635 | (PR 2207). */ | |
c906108c | 636 | |
c5aa993b | 637 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
638 | } |
639 | ||
640 | /* Convert addr into an offset rather than an absolute address. | |
641 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 642 | and assume that <addr> is where that got loaded. |
c906108c | 643 | |
53a5351d JM |
644 | We no longer warn if the lowest section is not a text segment (as |
645 | happens for the PA64 port. */ | |
e7cf9df1 | 646 | if (!mainline) |
c906108c | 647 | { |
2acceee2 JM |
648 | /* Find lowest loadable section to be used as starting point for |
649 | continguous sections. FIXME!! won't work without call to find | |
650 | .text first, but this assumes text is lowest section. */ | |
651 | lower_sect = bfd_get_section_by_name (objfile->obfd, ".text"); | |
652 | if (lower_sect == NULL) | |
c906108c | 653 | bfd_map_over_sections (objfile->obfd, find_lowest_section, |
2acceee2 JM |
654 | (PTR) &lower_sect); |
655 | if (lower_sect == NULL) | |
c906108c SS |
656 | warning ("no loadable sections found in added symbol-file %s", |
657 | objfile->name); | |
b8fbeb18 EZ |
658 | else |
659 | if ((bfd_get_section_flags (objfile->obfd, lower_sect) & SEC_CODE) == 0) | |
660 | warning ("Lowest section in %s is %s at %s", | |
661 | objfile->name, | |
662 | bfd_section_name (objfile->obfd, lower_sect), | |
663 | paddr (bfd_section_vma (objfile->obfd, lower_sect))); | |
2acceee2 JM |
664 | if (lower_sect != NULL) |
665 | lower_offset = bfd_section_vma (objfile->obfd, lower_sect); | |
666 | else | |
667 | lower_offset = 0; | |
668 | ||
669 | /* Calculate offsets for the loadable sections. | |
670 | FIXME! Sections must be in order of increasing loadable section | |
671 | so that contiguous sections can use the lower-offset!!! | |
672 | ||
673 | Adjust offsets if the segments are not contiguous. | |
674 | If the section is contiguous, its offset should be set to | |
675 | the offset of the highest loadable section lower than it | |
676 | (the loadable section directly below it in memory). | |
677 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
678 | ||
e7cf9df1 | 679 | /* Calculate offsets for sections. */ |
2acceee2 JM |
680 | for (i=0 ; i < MAX_SECTIONS && addrs->other[i].name; i++) |
681 | { | |
e7cf9df1 | 682 | if (addrs->other[i].addr != 0) |
2acceee2 | 683 | { |
e7cf9df1 | 684 | sect = bfd_get_section_by_name (objfile->obfd, addrs->other[i].name); |
2acceee2 JM |
685 | if (sect) |
686 | { | |
687 | addrs->other[i].addr -= bfd_section_vma (objfile->obfd, sect); | |
688 | lower_offset = addrs->other[i].addr; | |
e7cf9df1 | 689 | /* This is the index used by BFD. */ |
2acceee2 JM |
690 | addrs->other[i].sectindex = sect->index ; |
691 | } | |
692 | else | |
693 | { | |
694 | warning ("section %s not found in %s", addrs->other[i].name, | |
695 | objfile->name); | |
696 | addrs->other[i].addr = 0; | |
697 | } | |
698 | } | |
699 | else | |
700 | addrs->other[i].addr = lower_offset; | |
701 | } | |
c906108c SS |
702 | } |
703 | ||
704 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
705 | appear for this new file, and record how verbose to be, then do the | |
706 | initial symbol reading for this file. */ | |
707 | ||
c5aa993b | 708 | (*objfile->sf->sym_init) (objfile); |
c906108c SS |
709 | clear_complaints (1, verbo); |
710 | ||
2acceee2 | 711 | (*objfile->sf->sym_offsets) (objfile, addrs); |
c906108c SS |
712 | |
713 | #ifndef IBM6000_TARGET | |
714 | /* This is a SVR4/SunOS specific hack, I think. In any event, it | |
715 | screws RS/6000. sym_offsets should be doing this sort of thing, | |
716 | because it knows the mapping between bfd sections and | |
717 | section_offsets. */ | |
718 | /* This is a hack. As far as I can tell, section offsets are not | |
719 | target dependent. They are all set to addr with a couple of | |
720 | exceptions. The exceptions are sysvr4 shared libraries, whose | |
721 | offsets are kept in solib structures anyway and rs6000 xcoff | |
722 | which handles shared libraries in a completely unique way. | |
723 | ||
724 | Section offsets are built similarly, except that they are built | |
725 | by adding addr in all cases because there is no clear mapping | |
726 | from section_offsets into actual sections. Note that solib.c | |
96baa820 | 727 | has a different algorithm for finding section offsets. |
c906108c SS |
728 | |
729 | These should probably all be collapsed into some target | |
730 | independent form of shared library support. FIXME. */ | |
731 | ||
2acceee2 | 732 | if (addrs) |
c906108c SS |
733 | { |
734 | struct obj_section *s; | |
735 | ||
2acceee2 JM |
736 | /* Map section offsets in "addr" back to the object's |
737 | sections by comparing the section names with bfd's | |
738 | section names. Then adjust the section address by | |
739 | the offset. */ /* for gdb/13815 */ | |
740 | ||
96baa820 | 741 | ALL_OBJFILE_OSECTIONS (objfile, s) |
c906108c | 742 | { |
2acceee2 JM |
743 | CORE_ADDR s_addr = 0; |
744 | int i; | |
745 | ||
62557bbc KB |
746 | for (i = 0; |
747 | !s_addr && i < MAX_SECTIONS && addrs->other[i].name; | |
748 | i++) | |
fbd35540 MS |
749 | if (strcmp (bfd_section_name (s->objfile->obfd, |
750 | s->the_bfd_section), | |
751 | addrs->other[i].name) == 0) | |
2acceee2 JM |
752 | s_addr = addrs->other[i].addr; /* end added for gdb/13815 */ |
753 | ||
c906108c | 754 | s->addr -= s->offset; |
2acceee2 | 755 | s->addr += s_addr; |
c906108c | 756 | s->endaddr -= s->offset; |
2acceee2 JM |
757 | s->endaddr += s_addr; |
758 | s->offset += s_addr; | |
c906108c SS |
759 | } |
760 | } | |
761 | #endif /* not IBM6000_TARGET */ | |
762 | ||
96baa820 | 763 | (*objfile->sf->sym_read) (objfile, mainline); |
c906108c SS |
764 | |
765 | if (!have_partial_symbols () && !have_full_symbols ()) | |
766 | { | |
767 | wrap_here (""); | |
768 | printf_filtered ("(no debugging symbols found)..."); | |
769 | wrap_here (""); | |
770 | } | |
771 | ||
772 | /* Don't allow char * to have a typename (else would get caddr_t). | |
773 | Ditto void *. FIXME: Check whether this is now done by all the | |
774 | symbol readers themselves (many of them now do), and if so remove | |
775 | it from here. */ | |
776 | ||
777 | TYPE_NAME (lookup_pointer_type (builtin_type_char)) = 0; | |
778 | TYPE_NAME (lookup_pointer_type (builtin_type_void)) = 0; | |
779 | ||
780 | /* Mark the objfile has having had initial symbol read attempted. Note | |
781 | that this does not mean we found any symbols... */ | |
782 | ||
c5aa993b | 783 | objfile->flags |= OBJF_SYMS; |
c906108c SS |
784 | |
785 | /* Discard cleanups as symbol reading was successful. */ | |
786 | ||
787 | discard_cleanups (old_chain); | |
788 | ||
96baa820 | 789 | /* Call this after reading in a new symbol table to give target |
38c2ef12 | 790 | dependent code a crack at the new symbols. For instance, this |
96baa820 JM |
791 | could be used to update the values of target-specific symbols GDB |
792 | needs to keep track of (such as _sigtramp, or whatever). */ | |
c906108c SS |
793 | |
794 | TARGET_SYMFILE_POSTREAD (objfile); | |
795 | } | |
796 | ||
797 | /* Perform required actions after either reading in the initial | |
798 | symbols for a new objfile, or mapping in the symbols from a reusable | |
799 | objfile. */ | |
c5aa993b | 800 | |
c906108c | 801 | void |
fba45db2 | 802 | new_symfile_objfile (struct objfile *objfile, int mainline, int verbo) |
c906108c SS |
803 | { |
804 | ||
805 | /* If this is the main symbol file we have to clean up all users of the | |
806 | old main symbol file. Otherwise it is sufficient to fixup all the | |
807 | breakpoints that may have been redefined by this symbol file. */ | |
808 | if (mainline) | |
809 | { | |
810 | /* OK, make it the "real" symbol file. */ | |
811 | symfile_objfile = objfile; | |
812 | ||
813 | clear_symtab_users (); | |
814 | } | |
815 | else | |
816 | { | |
817 | breakpoint_re_set (); | |
818 | } | |
819 | ||
820 | /* We're done reading the symbol file; finish off complaints. */ | |
821 | clear_complaints (0, verbo); | |
822 | } | |
823 | ||
824 | /* Process a symbol file, as either the main file or as a dynamically | |
825 | loaded file. | |
826 | ||
827 | NAME is the file name (which will be tilde-expanded and made | |
828 | absolute herein) (but we don't free or modify NAME itself). | |
829 | FROM_TTY says how verbose to be. MAINLINE specifies whether this | |
830 | is the main symbol file, or whether it's an extra symbol file such | |
831 | as dynamically loaded code. If !mainline, ADDR is the address | |
832 | where the text segment was loaded. | |
833 | ||
c906108c SS |
834 | Upon success, returns a pointer to the objfile that was added. |
835 | Upon failure, jumps back to command level (never returns). */ | |
836 | ||
837 | struct objfile * | |
fba45db2 KB |
838 | symbol_file_add (char *name, int from_tty, struct section_addr_info *addrs, |
839 | int mainline, int flags) | |
c906108c SS |
840 | { |
841 | struct objfile *objfile; | |
842 | struct partial_symtab *psymtab; | |
843 | bfd *abfd; | |
844 | ||
845 | /* Open a bfd for the file, and give user a chance to burp if we'd be | |
846 | interactively wiping out any existing symbols. */ | |
847 | ||
848 | abfd = symfile_bfd_open (name); | |
849 | ||
850 | if ((have_full_symbols () || have_partial_symbols ()) | |
851 | && mainline | |
852 | && from_tty | |
853 | && !query ("Load new symbol table from \"%s\"? ", name)) | |
c5aa993b | 854 | error ("Not confirmed."); |
c906108c | 855 | |
2df3850c | 856 | objfile = allocate_objfile (abfd, flags); |
c906108c SS |
857 | |
858 | /* If the objfile uses a mapped symbol file, and we have a psymtab for | |
859 | it, then skip reading any symbols at this time. */ | |
860 | ||
c5aa993b | 861 | if ((objfile->flags & OBJF_MAPPED) && (objfile->flags & OBJF_SYMS)) |
c906108c SS |
862 | { |
863 | /* We mapped in an existing symbol table file that already has had | |
c5aa993b JM |
864 | initial symbol reading performed, so we can skip that part. Notify |
865 | the user that instead of reading the symbols, they have been mapped. | |
866 | */ | |
c906108c SS |
867 | if (from_tty || info_verbose) |
868 | { | |
869 | printf_filtered ("Mapped symbols for %s...", name); | |
870 | wrap_here (""); | |
871 | gdb_flush (gdb_stdout); | |
872 | } | |
873 | init_entry_point_info (objfile); | |
874 | find_sym_fns (objfile); | |
875 | } | |
876 | else | |
877 | { | |
878 | /* We either created a new mapped symbol table, mapped an existing | |
c5aa993b JM |
879 | symbol table file which has not had initial symbol reading |
880 | performed, or need to read an unmapped symbol table. */ | |
c906108c SS |
881 | if (from_tty || info_verbose) |
882 | { | |
883 | if (pre_add_symbol_hook) | |
884 | pre_add_symbol_hook (name); | |
885 | else | |
886 | { | |
887 | printf_filtered ("Reading symbols from %s...", name); | |
888 | wrap_here (""); | |
889 | gdb_flush (gdb_stdout); | |
890 | } | |
891 | } | |
2acceee2 | 892 | syms_from_objfile (objfile, addrs, mainline, from_tty); |
c906108c SS |
893 | } |
894 | ||
895 | /* We now have at least a partial symbol table. Check to see if the | |
896 | user requested that all symbols be read on initial access via either | |
897 | the gdb startup command line or on a per symbol file basis. Expand | |
898 | all partial symbol tables for this objfile if so. */ | |
899 | ||
2acceee2 | 900 | if ((flags & OBJF_READNOW) || readnow_symbol_files) |
c906108c SS |
901 | { |
902 | if (from_tty || info_verbose) | |
903 | { | |
904 | printf_filtered ("expanding to full symbols..."); | |
905 | wrap_here (""); | |
906 | gdb_flush (gdb_stdout); | |
907 | } | |
908 | ||
c5aa993b | 909 | for (psymtab = objfile->psymtabs; |
c906108c | 910 | psymtab != NULL; |
c5aa993b | 911 | psymtab = psymtab->next) |
c906108c SS |
912 | { |
913 | psymtab_to_symtab (psymtab); | |
914 | } | |
915 | } | |
916 | ||
917 | if (from_tty || info_verbose) | |
918 | { | |
919 | if (post_add_symbol_hook) | |
c5aa993b | 920 | post_add_symbol_hook (); |
c906108c | 921 | else |
c5aa993b JM |
922 | { |
923 | printf_filtered ("done.\n"); | |
924 | gdb_flush (gdb_stdout); | |
925 | } | |
c906108c SS |
926 | } |
927 | ||
109f874e MS |
928 | if (objfile->sf == NULL) |
929 | return objfile; /* No symbols. */ | |
930 | ||
c906108c SS |
931 | new_symfile_objfile (objfile, mainline, from_tty); |
932 | ||
11cf8741 JM |
933 | if (target_new_objfile_hook) |
934 | target_new_objfile_hook (objfile); | |
c906108c SS |
935 | |
936 | return (objfile); | |
937 | } | |
938 | ||
d7db6da9 FN |
939 | /* Call symbol_file_add() with default values and update whatever is |
940 | affected by the loading of a new main(). | |
941 | Used when the file is supplied in the gdb command line | |
942 | and by some targets with special loading requirements. | |
943 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
944 | argument for the switches that can only be specified in the symbol_file | |
945 | command itself. */ | |
1adeb98a FN |
946 | |
947 | void | |
948 | symbol_file_add_main (char *args, int from_tty) | |
949 | { | |
d7db6da9 FN |
950 | symbol_file_add_main_1 (args, from_tty, 0); |
951 | } | |
952 | ||
953 | static void | |
954 | symbol_file_add_main_1 (char *args, int from_tty, int flags) | |
955 | { | |
956 | symbol_file_add (args, from_tty, NULL, 1, flags); | |
957 | ||
958 | #ifdef HPUXHPPA | |
959 | RESET_HP_UX_GLOBALS (); | |
960 | #endif | |
961 | ||
962 | /* Getting new symbols may change our opinion about | |
963 | what is frameless. */ | |
964 | reinit_frame_cache (); | |
965 | ||
966 | set_initial_language (); | |
1adeb98a FN |
967 | } |
968 | ||
969 | void | |
970 | symbol_file_clear (int from_tty) | |
971 | { | |
972 | if ((have_full_symbols () || have_partial_symbols ()) | |
973 | && from_tty | |
974 | && !query ("Discard symbol table from `%s'? ", | |
975 | symfile_objfile->name)) | |
976 | error ("Not confirmed."); | |
977 | free_all_objfiles (); | |
978 | ||
979 | /* solib descriptors may have handles to objfiles. Since their | |
980 | storage has just been released, we'd better wipe the solib | |
981 | descriptors as well. | |
982 | */ | |
983 | #if defined(SOLIB_RESTART) | |
984 | SOLIB_RESTART (); | |
985 | #endif | |
986 | ||
987 | symfile_objfile = NULL; | |
988 | if (from_tty) | |
989 | printf_unfiltered ("No symbol file now.\n"); | |
990 | #ifdef HPUXHPPA | |
991 | RESET_HP_UX_GLOBALS (); | |
992 | #endif | |
993 | } | |
994 | ||
c906108c SS |
995 | /* This is the symbol-file command. Read the file, analyze its |
996 | symbols, and add a struct symtab to a symtab list. The syntax of | |
997 | the command is rather bizarre--(1) buildargv implements various | |
998 | quoting conventions which are undocumented and have little or | |
999 | nothing in common with the way things are quoted (or not quoted) | |
1000 | elsewhere in GDB, (2) options are used, which are not generally | |
1001 | used in GDB (perhaps "set mapped on", "set readnow on" would be | |
1002 | better), (3) the order of options matters, which is contrary to GNU | |
1003 | conventions (because it is confusing and inconvenient). */ | |
4da95fc4 EZ |
1004 | /* Note: ezannoni 2000-04-17. This function used to have support for |
1005 | rombug (see remote-os9k.c). It consisted of a call to target_link() | |
1006 | (target.c) to get the address of the text segment from the target, | |
1007 | and pass that to symbol_file_add(). This is no longer supported. */ | |
c906108c SS |
1008 | |
1009 | void | |
fba45db2 | 1010 | symbol_file_command (char *args, int from_tty) |
c906108c SS |
1011 | { |
1012 | char **argv; | |
1013 | char *name = NULL; | |
c906108c | 1014 | struct cleanup *cleanups; |
2df3850c | 1015 | int flags = OBJF_USERLOADED; |
c906108c SS |
1016 | |
1017 | dont_repeat (); | |
1018 | ||
1019 | if (args == NULL) | |
1020 | { | |
1adeb98a | 1021 | symbol_file_clear (from_tty); |
c906108c SS |
1022 | } |
1023 | else | |
1024 | { | |
1025 | if ((argv = buildargv (args)) == NULL) | |
1026 | { | |
1027 | nomem (0); | |
1028 | } | |
7a292a7a | 1029 | cleanups = make_cleanup_freeargv (argv); |
c906108c SS |
1030 | while (*argv != NULL) |
1031 | { | |
1032 | if (STREQ (*argv, "-mapped")) | |
4da95fc4 EZ |
1033 | flags |= OBJF_MAPPED; |
1034 | else | |
1035 | if (STREQ (*argv, "-readnow")) | |
2acceee2 | 1036 | flags |= OBJF_READNOW; |
4da95fc4 EZ |
1037 | else |
1038 | if (**argv == '-') | |
1039 | error ("unknown option `%s'", *argv); | |
c5aa993b | 1040 | else |
c5aa993b | 1041 | { |
4da95fc4 | 1042 | name = *argv; |
c906108c | 1043 | |
d7db6da9 | 1044 | symbol_file_add_main_1 (name, from_tty, flags); |
4da95fc4 | 1045 | } |
c906108c SS |
1046 | argv++; |
1047 | } | |
1048 | ||
1049 | if (name == NULL) | |
1050 | { | |
1051 | error ("no symbol file name was specified"); | |
1052 | } | |
c906108c SS |
1053 | do_cleanups (cleanups); |
1054 | } | |
1055 | } | |
1056 | ||
1057 | /* Set the initial language. | |
1058 | ||
1059 | A better solution would be to record the language in the psymtab when reading | |
1060 | partial symbols, and then use it (if known) to set the language. This would | |
1061 | be a win for formats that encode the language in an easily discoverable place, | |
1062 | such as DWARF. For stabs, we can jump through hoops looking for specially | |
1063 | named symbols or try to intuit the language from the specific type of stabs | |
1064 | we find, but we can't do that until later when we read in full symbols. | |
1065 | FIXME. */ | |
1066 | ||
1067 | static void | |
fba45db2 | 1068 | set_initial_language (void) |
c906108c SS |
1069 | { |
1070 | struct partial_symtab *pst; | |
c5aa993b | 1071 | enum language lang = language_unknown; |
c906108c SS |
1072 | |
1073 | pst = find_main_psymtab (); | |
1074 | if (pst != NULL) | |
1075 | { | |
c5aa993b | 1076 | if (pst->filename != NULL) |
c906108c | 1077 | { |
c5aa993b JM |
1078 | lang = deduce_language_from_filename (pst->filename); |
1079 | } | |
c906108c SS |
1080 | if (lang == language_unknown) |
1081 | { | |
c5aa993b JM |
1082 | /* Make C the default language */ |
1083 | lang = language_c; | |
c906108c SS |
1084 | } |
1085 | set_language (lang); | |
1086 | expected_language = current_language; /* Don't warn the user */ | |
1087 | } | |
1088 | } | |
1089 | ||
1090 | /* Open file specified by NAME and hand it off to BFD for preliminary | |
1091 | analysis. Result is a newly initialized bfd *, which includes a newly | |
1092 | malloc'd` copy of NAME (tilde-expanded and made absolute). | |
1093 | In case of trouble, error() is called. */ | |
1094 | ||
1095 | bfd * | |
fba45db2 | 1096 | symfile_bfd_open (char *name) |
c906108c SS |
1097 | { |
1098 | bfd *sym_bfd; | |
1099 | int desc; | |
1100 | char *absolute_name; | |
1101 | ||
1102 | ||
1103 | ||
1104 | name = tilde_expand (name); /* Returns 1st new malloc'd copy */ | |
1105 | ||
1106 | /* Look down path for it, allocate 2nd new malloc'd copy. */ | |
1107 | desc = openp (getenv ("PATH"), 1, name, O_RDONLY | O_BINARY, 0, &absolute_name); | |
608506ed | 1108 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
c906108c SS |
1109 | if (desc < 0) |
1110 | { | |
1111 | char *exename = alloca (strlen (name) + 5); | |
1112 | strcat (strcpy (exename, name), ".exe"); | |
1113 | desc = openp (getenv ("PATH"), 1, exename, O_RDONLY | O_BINARY, | |
c5aa993b | 1114 | 0, &absolute_name); |
c906108c SS |
1115 | } |
1116 | #endif | |
1117 | if (desc < 0) | |
1118 | { | |
b8c9b27d | 1119 | make_cleanup (xfree, name); |
c906108c SS |
1120 | perror_with_name (name); |
1121 | } | |
b8c9b27d | 1122 | xfree (name); /* Free 1st new malloc'd copy */ |
c906108c | 1123 | name = absolute_name; /* Keep 2nd malloc'd copy in bfd */ |
c5aa993b | 1124 | /* It'll be freed in free_objfile(). */ |
c906108c SS |
1125 | |
1126 | sym_bfd = bfd_fdopenr (name, gnutarget, desc); | |
1127 | if (!sym_bfd) | |
1128 | { | |
1129 | close (desc); | |
b8c9b27d | 1130 | make_cleanup (xfree, name); |
c906108c SS |
1131 | error ("\"%s\": can't open to read symbols: %s.", name, |
1132 | bfd_errmsg (bfd_get_error ())); | |
1133 | } | |
81a9a963 | 1134 | sym_bfd->cacheable = 1; |
c906108c SS |
1135 | |
1136 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1137 | { | |
1138 | /* FIXME: should be checking for errors from bfd_close (for one thing, | |
c5aa993b JM |
1139 | on error it does not free all the storage associated with the |
1140 | bfd). */ | |
c906108c | 1141 | bfd_close (sym_bfd); /* This also closes desc */ |
b8c9b27d | 1142 | make_cleanup (xfree, name); |
c906108c SS |
1143 | error ("\"%s\": can't read symbols: %s.", name, |
1144 | bfd_errmsg (bfd_get_error ())); | |
1145 | } | |
1146 | return (sym_bfd); | |
1147 | } | |
1148 | ||
0e931cf0 JB |
1149 | /* Return the section index for the given section name. Return -1 if |
1150 | the section was not found. */ | |
1151 | int | |
1152 | get_section_index (struct objfile *objfile, char *section_name) | |
1153 | { | |
1154 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
1155 | if (sect) | |
1156 | return sect->index; | |
1157 | else | |
1158 | return -1; | |
1159 | } | |
1160 | ||
c906108c SS |
1161 | /* Link a new symtab_fns into the global symtab_fns list. Called on gdb |
1162 | startup by the _initialize routine in each object file format reader, | |
1163 | to register information about each format the the reader is prepared | |
1164 | to handle. */ | |
1165 | ||
1166 | void | |
fba45db2 | 1167 | add_symtab_fns (struct sym_fns *sf) |
c906108c SS |
1168 | { |
1169 | sf->next = symtab_fns; | |
1170 | symtab_fns = sf; | |
1171 | } | |
1172 | ||
1173 | ||
1174 | /* Initialize to read symbols from the symbol file sym_bfd. It either | |
1175 | returns or calls error(). The result is an initialized struct sym_fns | |
1176 | in the objfile structure, that contains cached information about the | |
1177 | symbol file. */ | |
1178 | ||
1179 | static void | |
fba45db2 | 1180 | find_sym_fns (struct objfile *objfile) |
c906108c SS |
1181 | { |
1182 | struct sym_fns *sf; | |
c5aa993b JM |
1183 | enum bfd_flavour our_flavour = bfd_get_flavour (objfile->obfd); |
1184 | char *our_target = bfd_get_target (objfile->obfd); | |
c906108c | 1185 | |
75245b24 MS |
1186 | if (our_flavour == bfd_target_srec_flavour |
1187 | || our_flavour == bfd_target_ihex_flavour | |
1188 | || our_flavour == bfd_target_tekhex_flavour) | |
1189 | return; /* No symbols. */ | |
1190 | ||
c906108c SS |
1191 | /* Special kludge for apollo. See dstread.c. */ |
1192 | if (STREQN (our_target, "apollo", 6)) | |
c5aa993b | 1193 | our_flavour = (enum bfd_flavour) -2; |
c906108c | 1194 | |
c5aa993b | 1195 | for (sf = symtab_fns; sf != NULL; sf = sf->next) |
c906108c | 1196 | { |
c5aa993b | 1197 | if (our_flavour == sf->sym_flavour) |
c906108c | 1198 | { |
c5aa993b | 1199 | objfile->sf = sf; |
c906108c SS |
1200 | return; |
1201 | } | |
1202 | } | |
1203 | error ("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown.", | |
c5aa993b | 1204 | bfd_get_target (objfile->obfd)); |
c906108c SS |
1205 | } |
1206 | \f | |
1207 | /* This function runs the load command of our current target. */ | |
1208 | ||
1209 | static void | |
fba45db2 | 1210 | load_command (char *arg, int from_tty) |
c906108c SS |
1211 | { |
1212 | if (arg == NULL) | |
1213 | arg = get_exec_file (1); | |
1214 | target_load (arg, from_tty); | |
2889e661 JB |
1215 | |
1216 | /* After re-loading the executable, we don't really know which | |
1217 | overlays are mapped any more. */ | |
1218 | overlay_cache_invalid = 1; | |
c906108c SS |
1219 | } |
1220 | ||
1221 | /* This version of "load" should be usable for any target. Currently | |
1222 | it is just used for remote targets, not inftarg.c or core files, | |
1223 | on the theory that only in that case is it useful. | |
1224 | ||
1225 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1226 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1227 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1228 | performance compares. */ | |
917317f4 JM |
1229 | |
1230 | static int download_write_size = 512; | |
1231 | static int validate_download = 0; | |
1232 | ||
e4f9b4d5 MS |
1233 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1234 | ||
1235 | static void | |
1236 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1237 | { | |
1238 | bfd_size_type *sum = data; | |
1239 | ||
1240 | *sum += bfd_get_section_size_before_reloc (asec); | |
1241 | } | |
1242 | ||
1243 | /* Opaque data for load_section_callback. */ | |
1244 | struct load_section_data { | |
1245 | unsigned long load_offset; | |
1246 | unsigned long write_count; | |
1247 | unsigned long data_count; | |
1248 | bfd_size_type total_size; | |
1249 | }; | |
1250 | ||
1251 | /* Callback service function for generic_load (bfd_map_over_sections). */ | |
1252 | ||
1253 | static void | |
1254 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
1255 | { | |
1256 | struct load_section_data *args = data; | |
1257 | ||
1258 | if (bfd_get_section_flags (abfd, asec) & SEC_LOAD) | |
1259 | { | |
1260 | bfd_size_type size = bfd_get_section_size_before_reloc (asec); | |
1261 | if (size > 0) | |
1262 | { | |
1263 | char *buffer; | |
1264 | struct cleanup *old_chain; | |
1265 | CORE_ADDR lma = bfd_section_lma (abfd, asec) + args->load_offset; | |
1266 | bfd_size_type block_size; | |
1267 | int err; | |
1268 | const char *sect_name = bfd_get_section_name (abfd, asec); | |
1269 | bfd_size_type sent; | |
1270 | ||
1271 | if (download_write_size > 0 && size > download_write_size) | |
1272 | block_size = download_write_size; | |
1273 | else | |
1274 | block_size = size; | |
1275 | ||
1276 | buffer = xmalloc (size); | |
1277 | old_chain = make_cleanup (xfree, buffer); | |
1278 | ||
1279 | /* Is this really necessary? I guess it gives the user something | |
1280 | to look at during a long download. */ | |
e4f9b4d5 MS |
1281 | ui_out_message (uiout, 0, "Loading section %s, size 0x%s lma 0x%s\n", |
1282 | sect_name, paddr_nz (size), paddr_nz (lma)); | |
e4f9b4d5 MS |
1283 | |
1284 | bfd_get_section_contents (abfd, asec, buffer, 0, size); | |
1285 | ||
1286 | sent = 0; | |
1287 | do | |
1288 | { | |
1289 | int len; | |
1290 | bfd_size_type this_transfer = size - sent; | |
1291 | ||
1292 | if (this_transfer >= block_size) | |
1293 | this_transfer = block_size; | |
1294 | len = target_write_memory_partial (lma, buffer, | |
1295 | this_transfer, &err); | |
1296 | if (err) | |
1297 | break; | |
1298 | if (validate_download) | |
1299 | { | |
1300 | /* Broken memories and broken monitors manifest | |
1301 | themselves here when bring new computers to | |
1302 | life. This doubles already slow downloads. */ | |
1303 | /* NOTE: cagney/1999-10-18: A more efficient | |
1304 | implementation might add a verify_memory() | |
1305 | method to the target vector and then use | |
1306 | that. remote.c could implement that method | |
1307 | using the ``qCRC'' packet. */ | |
1308 | char *check = xmalloc (len); | |
1309 | struct cleanup *verify_cleanups = | |
1310 | make_cleanup (xfree, check); | |
1311 | ||
1312 | if (target_read_memory (lma, check, len) != 0) | |
1313 | error ("Download verify read failed at 0x%s", | |
1314 | paddr (lma)); | |
1315 | if (memcmp (buffer, check, len) != 0) | |
1316 | error ("Download verify compare failed at 0x%s", | |
1317 | paddr (lma)); | |
1318 | do_cleanups (verify_cleanups); | |
1319 | } | |
1320 | args->data_count += len; | |
1321 | lma += len; | |
1322 | buffer += len; | |
1323 | args->write_count += 1; | |
1324 | sent += len; | |
1325 | if (quit_flag | |
1326 | || (ui_load_progress_hook != NULL | |
1327 | && ui_load_progress_hook (sect_name, sent))) | |
1328 | error ("Canceled the download"); | |
1329 | ||
1330 | if (show_load_progress != NULL) | |
1331 | show_load_progress (sect_name, sent, size, | |
1332 | args->data_count, args->total_size); | |
1333 | } | |
1334 | while (sent < size); | |
1335 | ||
1336 | if (err != 0) | |
1337 | error ("Memory access error while loading section %s.", sect_name); | |
1338 | ||
1339 | do_cleanups (old_chain); | |
1340 | } | |
1341 | } | |
1342 | } | |
1343 | ||
c906108c | 1344 | void |
917317f4 | 1345 | generic_load (char *args, int from_tty) |
c906108c | 1346 | { |
c906108c SS |
1347 | asection *s; |
1348 | bfd *loadfile_bfd; | |
1349 | time_t start_time, end_time; /* Start and end times of download */ | |
917317f4 JM |
1350 | char *filename; |
1351 | struct cleanup *old_cleanups; | |
1352 | char *offptr; | |
e4f9b4d5 MS |
1353 | struct load_section_data cbdata; |
1354 | CORE_ADDR entry; | |
1355 | ||
1356 | cbdata.load_offset = 0; /* Offset to add to vma for each section. */ | |
1357 | cbdata.write_count = 0; /* Number of writes needed. */ | |
1358 | cbdata.data_count = 0; /* Number of bytes written to target memory. */ | |
1359 | cbdata.total_size = 0; /* Total size of all bfd sectors. */ | |
917317f4 JM |
1360 | |
1361 | /* Parse the input argument - the user can specify a load offset as | |
1362 | a second argument. */ | |
1363 | filename = xmalloc (strlen (args) + 1); | |
b8c9b27d | 1364 | old_cleanups = make_cleanup (xfree, filename); |
917317f4 JM |
1365 | strcpy (filename, args); |
1366 | offptr = strchr (filename, ' '); | |
1367 | if (offptr != NULL) | |
1368 | { | |
1369 | char *endptr; | |
ba5f2f8a | 1370 | |
e4f9b4d5 | 1371 | cbdata.load_offset = strtoul (offptr, &endptr, 0); |
917317f4 JM |
1372 | if (offptr == endptr) |
1373 | error ("Invalid download offset:%s\n", offptr); | |
1374 | *offptr = '\0'; | |
1375 | } | |
c906108c | 1376 | else |
e4f9b4d5 | 1377 | cbdata.load_offset = 0; |
c906108c | 1378 | |
917317f4 | 1379 | /* Open the file for loading. */ |
c906108c SS |
1380 | loadfile_bfd = bfd_openr (filename, gnutarget); |
1381 | if (loadfile_bfd == NULL) | |
1382 | { | |
1383 | perror_with_name (filename); | |
1384 | return; | |
1385 | } | |
917317f4 | 1386 | |
c906108c SS |
1387 | /* FIXME: should be checking for errors from bfd_close (for one thing, |
1388 | on error it does not free all the storage associated with the | |
1389 | bfd). */ | |
5c65bbb6 | 1390 | make_cleanup_bfd_close (loadfile_bfd); |
c906108c | 1391 | |
c5aa993b | 1392 | if (!bfd_check_format (loadfile_bfd, bfd_object)) |
c906108c SS |
1393 | { |
1394 | error ("\"%s\" is not an object file: %s", filename, | |
1395 | bfd_errmsg (bfd_get_error ())); | |
1396 | } | |
c5aa993b | 1397 | |
e4f9b4d5 MS |
1398 | bfd_map_over_sections (loadfile_bfd, add_section_size_callback, |
1399 | (void *) &cbdata.total_size); | |
c2d11a7d | 1400 | |
c906108c SS |
1401 | start_time = time (NULL); |
1402 | ||
e4f9b4d5 | 1403 | bfd_map_over_sections (loadfile_bfd, load_section_callback, &cbdata); |
c906108c SS |
1404 | |
1405 | end_time = time (NULL); | |
ba5f2f8a | 1406 | |
e4f9b4d5 | 1407 | entry = bfd_get_start_address (loadfile_bfd); |
e4f9b4d5 MS |
1408 | ui_out_text (uiout, "Start address "); |
1409 | ui_out_field_fmt (uiout, "address", "0x%s", paddr_nz (entry)); | |
1410 | ui_out_text (uiout, ", load size "); | |
1411 | ui_out_field_fmt (uiout, "load-size", "%lu", cbdata.data_count); | |
1412 | ui_out_text (uiout, "\n"); | |
e4f9b4d5 MS |
1413 | /* We were doing this in remote-mips.c, I suspect it is right |
1414 | for other targets too. */ | |
1415 | write_pc (entry); | |
c906108c SS |
1416 | |
1417 | /* FIXME: are we supposed to call symbol_file_add or not? According to | |
1418 | a comment from remote-mips.c (where a call to symbol_file_add was | |
1419 | commented out), making the call confuses GDB if more than one file is | |
1420 | loaded in. remote-nindy.c had no call to symbol_file_add, but remote-vx.c | |
1421 | does. */ | |
1422 | ||
e4f9b4d5 MS |
1423 | print_transfer_performance (gdb_stdout, cbdata.data_count, |
1424 | cbdata.write_count, end_time - start_time); | |
c906108c SS |
1425 | |
1426 | do_cleanups (old_cleanups); | |
1427 | } | |
1428 | ||
1429 | /* Report how fast the transfer went. */ | |
1430 | ||
917317f4 JM |
1431 | /* DEPRECATED: cagney/1999-10-18: report_transfer_performance is being |
1432 | replaced by print_transfer_performance (with a very different | |
1433 | function signature). */ | |
1434 | ||
c906108c | 1435 | void |
fba45db2 KB |
1436 | report_transfer_performance (unsigned long data_count, time_t start_time, |
1437 | time_t end_time) | |
c906108c | 1438 | { |
ba5f2f8a MS |
1439 | print_transfer_performance (gdb_stdout, data_count, |
1440 | end_time - start_time, 0); | |
917317f4 JM |
1441 | } |
1442 | ||
1443 | void | |
d9fcf2fb | 1444 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
1445 | unsigned long data_count, |
1446 | unsigned long write_count, | |
1447 | unsigned long time_count) | |
1448 | { | |
8b93c638 JM |
1449 | ui_out_text (uiout, "Transfer rate: "); |
1450 | if (time_count > 0) | |
1451 | { | |
ba5f2f8a | 1452 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", |
8b93c638 JM |
1453 | (data_count * 8) / time_count); |
1454 | ui_out_text (uiout, " bits/sec"); | |
1455 | } | |
1456 | else | |
1457 | { | |
ba5f2f8a | 1458 | ui_out_field_fmt (uiout, "transferred-bits", "%lu", (data_count * 8)); |
8b93c638 JM |
1459 | ui_out_text (uiout, " bits in <1 sec"); |
1460 | } | |
1461 | if (write_count > 0) | |
1462 | { | |
1463 | ui_out_text (uiout, ", "); | |
ba5f2f8a | 1464 | ui_out_field_fmt (uiout, "write-rate", "%lu", data_count / write_count); |
8b93c638 JM |
1465 | ui_out_text (uiout, " bytes/write"); |
1466 | } | |
1467 | ui_out_text (uiout, ".\n"); | |
c906108c SS |
1468 | } |
1469 | ||
1470 | /* This function allows the addition of incrementally linked object files. | |
1471 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
1472 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
1473 | special case syntax for the rombug target (Rombug is the boot | |
1474 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
1475 | rombug case, the user doesn't need to supply a text address, | |
1476 | instead a call to target_link() (in target.c) would supply the | |
1477 | value to use. We are now discontinuing this type of ad hoc syntax. */ | |
c906108c SS |
1478 | |
1479 | /* ARGSUSED */ | |
1480 | static void | |
fba45db2 | 1481 | add_symbol_file_command (char *args, int from_tty) |
c906108c | 1482 | { |
db162d44 | 1483 | char *filename = NULL; |
2df3850c | 1484 | int flags = OBJF_USERLOADED; |
c906108c | 1485 | char *arg; |
2acceee2 | 1486 | int expecting_option = 0; |
db162d44 | 1487 | int section_index = 0; |
2acceee2 JM |
1488 | int argcnt = 0; |
1489 | int sec_num = 0; | |
1490 | int i; | |
db162d44 EZ |
1491 | int expecting_sec_name = 0; |
1492 | int expecting_sec_addr = 0; | |
1493 | ||
2acceee2 JM |
1494 | struct |
1495 | { | |
2acceee2 JM |
1496 | char *name; |
1497 | char *value; | |
db162d44 EZ |
1498 | } sect_opts[SECT_OFF_MAX]; |
1499 | ||
2acceee2 | 1500 | struct section_addr_info section_addrs; |
3017564a | 1501 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); |
c5aa993b | 1502 | |
c906108c SS |
1503 | dont_repeat (); |
1504 | ||
1505 | if (args == NULL) | |
db162d44 | 1506 | error ("add-symbol-file takes a file name and an address"); |
c906108c SS |
1507 | |
1508 | /* Make a copy of the string that we can safely write into. */ | |
c2d11a7d | 1509 | args = xstrdup (args); |
c906108c | 1510 | |
2acceee2 JM |
1511 | /* Ensure section_addrs is initialized */ |
1512 | memset (§ion_addrs, 0, sizeof (section_addrs)); | |
1513 | ||
2acceee2 | 1514 | while (*args != '\000') |
c906108c | 1515 | { |
db162d44 | 1516 | /* Any leading spaces? */ |
c5aa993b | 1517 | while (isspace (*args)) |
db162d44 EZ |
1518 | args++; |
1519 | ||
1520 | /* Point arg to the beginning of the argument. */ | |
c906108c | 1521 | arg = args; |
db162d44 EZ |
1522 | |
1523 | /* Move args pointer over the argument. */ | |
c5aa993b | 1524 | while ((*args != '\000') && !isspace (*args)) |
db162d44 EZ |
1525 | args++; |
1526 | ||
1527 | /* If there are more arguments, terminate arg and | |
1528 | proceed past it. */ | |
c906108c | 1529 | if (*args != '\000') |
db162d44 EZ |
1530 | *args++ = '\000'; |
1531 | ||
1532 | /* Now process the argument. */ | |
1533 | if (argcnt == 0) | |
c906108c | 1534 | { |
db162d44 EZ |
1535 | /* The first argument is the file name. */ |
1536 | filename = tilde_expand (arg); | |
3017564a | 1537 | make_cleanup (xfree, filename); |
c906108c | 1538 | } |
db162d44 | 1539 | else |
7a78ae4e ND |
1540 | if (argcnt == 1) |
1541 | { | |
1542 | /* The second argument is always the text address at which | |
1543 | to load the program. */ | |
1544 | sect_opts[section_index].name = ".text"; | |
1545 | sect_opts[section_index].value = arg; | |
1546 | section_index++; | |
1547 | } | |
1548 | else | |
1549 | { | |
1550 | /* It's an option (starting with '-') or it's an argument | |
1551 | to an option */ | |
1552 | ||
1553 | if (*arg == '-') | |
1554 | { | |
1555 | if (strcmp (arg, "-mapped") == 0) | |
1556 | flags |= OBJF_MAPPED; | |
1557 | else | |
1558 | if (strcmp (arg, "-readnow") == 0) | |
1559 | flags |= OBJF_READNOW; | |
1560 | else | |
1561 | if (strcmp (arg, "-s") == 0) | |
1562 | { | |
1563 | if (section_index >= SECT_OFF_MAX) | |
1564 | error ("Too many sections specified."); | |
1565 | expecting_sec_name = 1; | |
1566 | expecting_sec_addr = 1; | |
1567 | } | |
1568 | } | |
1569 | else | |
1570 | { | |
1571 | if (expecting_sec_name) | |
db162d44 | 1572 | { |
7a78ae4e ND |
1573 | sect_opts[section_index].name = arg; |
1574 | expecting_sec_name = 0; | |
db162d44 EZ |
1575 | } |
1576 | else | |
7a78ae4e ND |
1577 | if (expecting_sec_addr) |
1578 | { | |
1579 | sect_opts[section_index].value = arg; | |
1580 | expecting_sec_addr = 0; | |
1581 | section_index++; | |
1582 | } | |
1583 | else | |
1584 | error ("USAGE: add-symbol-file <filename> <textaddress> [-mapped] [-readnow] [-s <secname> <addr>]*"); | |
1585 | } | |
1586 | } | |
db162d44 | 1587 | argcnt++; |
c906108c | 1588 | } |
c906108c | 1589 | |
db162d44 EZ |
1590 | /* Print the prompt for the query below. And save the arguments into |
1591 | a sect_addr_info structure to be passed around to other | |
1592 | functions. We have to split this up into separate print | |
1593 | statements because local_hex_string returns a local static | |
1594 | string. */ | |
2acceee2 | 1595 | |
db162d44 EZ |
1596 | printf_filtered ("add symbol table from file \"%s\" at\n", filename); |
1597 | for (i = 0; i < section_index; i++) | |
c906108c | 1598 | { |
db162d44 EZ |
1599 | CORE_ADDR addr; |
1600 | char *val = sect_opts[i].value; | |
1601 | char *sec = sect_opts[i].name; | |
1602 | ||
1603 | val = sect_opts[i].value; | |
1604 | if (val[0] == '0' && val[1] == 'x') | |
1605 | addr = strtoul (val+2, NULL, 16); | |
1606 | else | |
1607 | addr = strtoul (val, NULL, 10); | |
1608 | ||
db162d44 EZ |
1609 | /* Here we store the section offsets in the order they were |
1610 | entered on the command line. */ | |
1611 | section_addrs.other[sec_num].name = sec; | |
1612 | section_addrs.other[sec_num].addr = addr; | |
1613 | printf_filtered ("\t%s_addr = %s\n", | |
1614 | sec, | |
1615 | local_hex_string ((unsigned long)addr)); | |
1616 | sec_num++; | |
1617 | ||
1618 | /* The object's sections are initialized when a | |
1619 | call is made to build_objfile_section_table (objfile). | |
1620 | This happens in reread_symbols. | |
1621 | At this point, we don't know what file type this is, | |
1622 | so we can't determine what section names are valid. */ | |
2acceee2 | 1623 | } |
db162d44 | 1624 | |
2acceee2 | 1625 | if (from_tty && (!query ("%s", ""))) |
c906108c SS |
1626 | error ("Not confirmed."); |
1627 | ||
db162d44 | 1628 | symbol_file_add (filename, from_tty, §ion_addrs, 0, flags); |
c906108c SS |
1629 | |
1630 | /* Getting new symbols may change our opinion about what is | |
1631 | frameless. */ | |
1632 | reinit_frame_cache (); | |
db162d44 | 1633 | do_cleanups (my_cleanups); |
c906108c SS |
1634 | } |
1635 | \f | |
1636 | static void | |
fba45db2 | 1637 | add_shared_symbol_files_command (char *args, int from_tty) |
c906108c SS |
1638 | { |
1639 | #ifdef ADD_SHARED_SYMBOL_FILES | |
1640 | ADD_SHARED_SYMBOL_FILES (args, from_tty); | |
1641 | #else | |
1642 | error ("This command is not available in this configuration of GDB."); | |
c5aa993b | 1643 | #endif |
c906108c SS |
1644 | } |
1645 | \f | |
1646 | /* Re-read symbols if a symbol-file has changed. */ | |
1647 | void | |
fba45db2 | 1648 | reread_symbols (void) |
c906108c SS |
1649 | { |
1650 | struct objfile *objfile; | |
1651 | long new_modtime; | |
1652 | int reread_one = 0; | |
1653 | struct stat new_statbuf; | |
1654 | int res; | |
1655 | ||
1656 | /* With the addition of shared libraries, this should be modified, | |
1657 | the load time should be saved in the partial symbol tables, since | |
1658 | different tables may come from different source files. FIXME. | |
1659 | This routine should then walk down each partial symbol table | |
1660 | and see if the symbol table that it originates from has been changed */ | |
1661 | ||
c5aa993b JM |
1662 | for (objfile = object_files; objfile; objfile = objfile->next) |
1663 | { | |
1664 | if (objfile->obfd) | |
1665 | { | |
c906108c | 1666 | #ifdef IBM6000_TARGET |
c5aa993b JM |
1667 | /* If this object is from a shared library, then you should |
1668 | stat on the library name, not member name. */ | |
c906108c | 1669 | |
c5aa993b JM |
1670 | if (objfile->obfd->my_archive) |
1671 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
1672 | else | |
c906108c | 1673 | #endif |
c5aa993b JM |
1674 | res = stat (objfile->name, &new_statbuf); |
1675 | if (res != 0) | |
c906108c | 1676 | { |
c5aa993b JM |
1677 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
1678 | printf_filtered ("`%s' has disappeared; keeping its symbols.\n", | |
1679 | objfile->name); | |
1680 | continue; | |
c906108c | 1681 | } |
c5aa993b JM |
1682 | new_modtime = new_statbuf.st_mtime; |
1683 | if (new_modtime != objfile->mtime) | |
c906108c | 1684 | { |
c5aa993b JM |
1685 | struct cleanup *old_cleanups; |
1686 | struct section_offsets *offsets; | |
1687 | int num_offsets; | |
c5aa993b JM |
1688 | char *obfd_filename; |
1689 | ||
1690 | printf_filtered ("`%s' has changed; re-reading symbols.\n", | |
1691 | objfile->name); | |
1692 | ||
1693 | /* There are various functions like symbol_file_add, | |
1694 | symfile_bfd_open, syms_from_objfile, etc., which might | |
1695 | appear to do what we want. But they have various other | |
1696 | effects which we *don't* want. So we just do stuff | |
1697 | ourselves. We don't worry about mapped files (for one thing, | |
1698 | any mapped file will be out of date). */ | |
1699 | ||
1700 | /* If we get an error, blow away this objfile (not sure if | |
1701 | that is the correct response for things like shared | |
1702 | libraries). */ | |
74b7792f | 1703 | old_cleanups = make_cleanup_free_objfile (objfile); |
c5aa993b | 1704 | /* We need to do this whenever any symbols go away. */ |
74b7792f | 1705 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c5aa993b JM |
1706 | |
1707 | /* Clean up any state BFD has sitting around. We don't need | |
1708 | to close the descriptor but BFD lacks a way of closing the | |
1709 | BFD without closing the descriptor. */ | |
1710 | obfd_filename = bfd_get_filename (objfile->obfd); | |
1711 | if (!bfd_close (objfile->obfd)) | |
1712 | error ("Can't close BFD for %s: %s", objfile->name, | |
1713 | bfd_errmsg (bfd_get_error ())); | |
1714 | objfile->obfd = bfd_openr (obfd_filename, gnutarget); | |
1715 | if (objfile->obfd == NULL) | |
1716 | error ("Can't open %s to read symbols.", objfile->name); | |
1717 | /* bfd_openr sets cacheable to true, which is what we want. */ | |
1718 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
1719 | error ("Can't read symbols from %s: %s.", objfile->name, | |
1720 | bfd_errmsg (bfd_get_error ())); | |
1721 | ||
1722 | /* Save the offsets, we will nuke them with the rest of the | |
1723 | psymbol_obstack. */ | |
1724 | num_offsets = objfile->num_sections; | |
d4f3574e SS |
1725 | offsets = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); |
1726 | memcpy (offsets, objfile->section_offsets, SIZEOF_SECTION_OFFSETS); | |
c5aa993b JM |
1727 | |
1728 | /* Nuke all the state that we will re-read. Much of the following | |
1729 | code which sets things to NULL really is necessary to tell | |
1730 | other parts of GDB that there is nothing currently there. */ | |
1731 | ||
1732 | /* FIXME: Do we have to free a whole linked list, or is this | |
1733 | enough? */ | |
1734 | if (objfile->global_psymbols.list) | |
aac7f4ea | 1735 | xmfree (objfile->md, objfile->global_psymbols.list); |
c5aa993b JM |
1736 | memset (&objfile->global_psymbols, 0, |
1737 | sizeof (objfile->global_psymbols)); | |
1738 | if (objfile->static_psymbols.list) | |
aac7f4ea | 1739 | xmfree (objfile->md, objfile->static_psymbols.list); |
c5aa993b JM |
1740 | memset (&objfile->static_psymbols, 0, |
1741 | sizeof (objfile->static_psymbols)); | |
1742 | ||
1743 | /* Free the obstacks for non-reusable objfiles */ | |
af5f3db6 AC |
1744 | bcache_xfree (objfile->psymbol_cache); |
1745 | objfile->psymbol_cache = bcache_xmalloc (); | |
1746 | bcache_xfree (objfile->macro_cache); | |
1747 | objfile->macro_cache = bcache_xmalloc (); | |
c5aa993b JM |
1748 | obstack_free (&objfile->psymbol_obstack, 0); |
1749 | obstack_free (&objfile->symbol_obstack, 0); | |
1750 | obstack_free (&objfile->type_obstack, 0); | |
1751 | objfile->sections = NULL; | |
1752 | objfile->symtabs = NULL; | |
1753 | objfile->psymtabs = NULL; | |
1754 | objfile->free_psymtabs = NULL; | |
1755 | objfile->msymbols = NULL; | |
1756 | objfile->minimal_symbol_count = 0; | |
0a83117a MS |
1757 | memset (&objfile->msymbol_hash, 0, |
1758 | sizeof (objfile->msymbol_hash)); | |
1759 | memset (&objfile->msymbol_demangled_hash, 0, | |
1760 | sizeof (objfile->msymbol_demangled_hash)); | |
c5aa993b JM |
1761 | objfile->fundamental_types = NULL; |
1762 | if (objfile->sf != NULL) | |
1763 | { | |
1764 | (*objfile->sf->sym_finish) (objfile); | |
1765 | } | |
1766 | ||
1767 | /* We never make this a mapped file. */ | |
1768 | objfile->md = NULL; | |
1769 | /* obstack_specify_allocation also initializes the obstack so | |
1770 | it is empty. */ | |
af5f3db6 AC |
1771 | objfile->psymbol_cache = bcache_xmalloc (); |
1772 | objfile->macro_cache = bcache_xmalloc (); | |
c5aa993b | 1773 | obstack_specify_allocation (&objfile->psymbol_obstack, 0, 0, |
b8c9b27d | 1774 | xmalloc, xfree); |
c5aa993b | 1775 | obstack_specify_allocation (&objfile->symbol_obstack, 0, 0, |
b8c9b27d | 1776 | xmalloc, xfree); |
c5aa993b | 1777 | obstack_specify_allocation (&objfile->type_obstack, 0, 0, |
b8c9b27d | 1778 | xmalloc, xfree); |
c5aa993b JM |
1779 | if (build_objfile_section_table (objfile)) |
1780 | { | |
1781 | error ("Can't find the file sections in `%s': %s", | |
1782 | objfile->name, bfd_errmsg (bfd_get_error ())); | |
1783 | } | |
1784 | ||
1785 | /* We use the same section offsets as from last time. I'm not | |
1786 | sure whether that is always correct for shared libraries. */ | |
1787 | objfile->section_offsets = (struct section_offsets *) | |
d4f3574e SS |
1788 | obstack_alloc (&objfile->psymbol_obstack, SIZEOF_SECTION_OFFSETS); |
1789 | memcpy (objfile->section_offsets, offsets, SIZEOF_SECTION_OFFSETS); | |
c5aa993b JM |
1790 | objfile->num_sections = num_offsets; |
1791 | ||
1792 | /* What the hell is sym_new_init for, anyway? The concept of | |
1793 | distinguishing between the main file and additional files | |
1794 | in this way seems rather dubious. */ | |
1795 | if (objfile == symfile_objfile) | |
1796 | { | |
1797 | (*objfile->sf->sym_new_init) (objfile); | |
c906108c | 1798 | #ifdef HPUXHPPA |
c5aa993b | 1799 | RESET_HP_UX_GLOBALS (); |
c906108c | 1800 | #endif |
c5aa993b JM |
1801 | } |
1802 | ||
1803 | (*objfile->sf->sym_init) (objfile); | |
1804 | clear_complaints (1, 1); | |
1805 | /* The "mainline" parameter is a hideous hack; I think leaving it | |
1806 | zero is OK since dbxread.c also does what it needs to do if | |
1807 | objfile->global_psymbols.size is 0. */ | |
96baa820 | 1808 | (*objfile->sf->sym_read) (objfile, 0); |
c5aa993b JM |
1809 | if (!have_partial_symbols () && !have_full_symbols ()) |
1810 | { | |
1811 | wrap_here (""); | |
1812 | printf_filtered ("(no debugging symbols found)\n"); | |
1813 | wrap_here (""); | |
1814 | } | |
1815 | objfile->flags |= OBJF_SYMS; | |
1816 | ||
1817 | /* We're done reading the symbol file; finish off complaints. */ | |
1818 | clear_complaints (0, 1); | |
c906108c | 1819 | |
c5aa993b JM |
1820 | /* Getting new symbols may change our opinion about what is |
1821 | frameless. */ | |
c906108c | 1822 | |
c5aa993b | 1823 | reinit_frame_cache (); |
c906108c | 1824 | |
c5aa993b JM |
1825 | /* Discard cleanups as symbol reading was successful. */ |
1826 | discard_cleanups (old_cleanups); | |
c906108c | 1827 | |
c5aa993b JM |
1828 | /* If the mtime has changed between the time we set new_modtime |
1829 | and now, we *want* this to be out of date, so don't call stat | |
1830 | again now. */ | |
1831 | objfile->mtime = new_modtime; | |
1832 | reread_one = 1; | |
c906108c | 1833 | |
c5aa993b | 1834 | /* Call this after reading in a new symbol table to give target |
38c2ef12 | 1835 | dependent code a crack at the new symbols. For instance, this |
c5aa993b JM |
1836 | could be used to update the values of target-specific symbols GDB |
1837 | needs to keep track of (such as _sigtramp, or whatever). */ | |
c906108c | 1838 | |
c5aa993b JM |
1839 | TARGET_SYMFILE_POSTREAD (objfile); |
1840 | } | |
c906108c SS |
1841 | } |
1842 | } | |
c906108c SS |
1843 | |
1844 | if (reread_one) | |
1845 | clear_symtab_users (); | |
1846 | } | |
c906108c SS |
1847 | \f |
1848 | ||
c5aa993b JM |
1849 | |
1850 | typedef struct | |
1851 | { | |
1852 | char *ext; | |
c906108c | 1853 | enum language lang; |
c5aa993b JM |
1854 | } |
1855 | filename_language; | |
c906108c | 1856 | |
c5aa993b | 1857 | static filename_language *filename_language_table; |
c906108c SS |
1858 | static int fl_table_size, fl_table_next; |
1859 | ||
1860 | static void | |
fba45db2 | 1861 | add_filename_language (char *ext, enum language lang) |
c906108c SS |
1862 | { |
1863 | if (fl_table_next >= fl_table_size) | |
1864 | { | |
1865 | fl_table_size += 10; | |
25bf3106 PM |
1866 | filename_language_table = |
1867 | xrealloc (filename_language_table, | |
1868 | fl_table_size * sizeof (*filename_language_table)); | |
c906108c SS |
1869 | } |
1870 | ||
4fcf66da | 1871 | filename_language_table[fl_table_next].ext = xstrdup (ext); |
c906108c SS |
1872 | filename_language_table[fl_table_next].lang = lang; |
1873 | fl_table_next++; | |
1874 | } | |
1875 | ||
1876 | static char *ext_args; | |
1877 | ||
1878 | static void | |
fba45db2 | 1879 | set_ext_lang_command (char *args, int from_tty) |
c906108c SS |
1880 | { |
1881 | int i; | |
1882 | char *cp = ext_args; | |
1883 | enum language lang; | |
1884 | ||
1885 | /* First arg is filename extension, starting with '.' */ | |
1886 | if (*cp != '.') | |
1887 | error ("'%s': Filename extension must begin with '.'", ext_args); | |
1888 | ||
1889 | /* Find end of first arg. */ | |
c5aa993b | 1890 | while (*cp && !isspace (*cp)) |
c906108c SS |
1891 | cp++; |
1892 | ||
1893 | if (*cp == '\0') | |
1894 | error ("'%s': two arguments required -- filename extension and language", | |
1895 | ext_args); | |
1896 | ||
1897 | /* Null-terminate first arg */ | |
c5aa993b | 1898 | *cp++ = '\0'; |
c906108c SS |
1899 | |
1900 | /* Find beginning of second arg, which should be a source language. */ | |
1901 | while (*cp && isspace (*cp)) | |
1902 | cp++; | |
1903 | ||
1904 | if (*cp == '\0') | |
1905 | error ("'%s': two arguments required -- filename extension and language", | |
1906 | ext_args); | |
1907 | ||
1908 | /* Lookup the language from among those we know. */ | |
1909 | lang = language_enum (cp); | |
1910 | ||
1911 | /* Now lookup the filename extension: do we already know it? */ | |
1912 | for (i = 0; i < fl_table_next; i++) | |
1913 | if (0 == strcmp (ext_args, filename_language_table[i].ext)) | |
1914 | break; | |
1915 | ||
1916 | if (i >= fl_table_next) | |
1917 | { | |
1918 | /* new file extension */ | |
1919 | add_filename_language (ext_args, lang); | |
1920 | } | |
1921 | else | |
1922 | { | |
1923 | /* redefining a previously known filename extension */ | |
1924 | ||
1925 | /* if (from_tty) */ | |
1926 | /* query ("Really make files of type %s '%s'?", */ | |
1927 | /* ext_args, language_str (lang)); */ | |
1928 | ||
b8c9b27d | 1929 | xfree (filename_language_table[i].ext); |
4fcf66da | 1930 | filename_language_table[i].ext = xstrdup (ext_args); |
c906108c SS |
1931 | filename_language_table[i].lang = lang; |
1932 | } | |
1933 | } | |
1934 | ||
1935 | static void | |
fba45db2 | 1936 | info_ext_lang_command (char *args, int from_tty) |
c906108c SS |
1937 | { |
1938 | int i; | |
1939 | ||
1940 | printf_filtered ("Filename extensions and the languages they represent:"); | |
1941 | printf_filtered ("\n\n"); | |
1942 | for (i = 0; i < fl_table_next; i++) | |
c5aa993b JM |
1943 | printf_filtered ("\t%s\t- %s\n", |
1944 | filename_language_table[i].ext, | |
c906108c SS |
1945 | language_str (filename_language_table[i].lang)); |
1946 | } | |
1947 | ||
1948 | static void | |
fba45db2 | 1949 | init_filename_language_table (void) |
c906108c SS |
1950 | { |
1951 | if (fl_table_size == 0) /* protect against repetition */ | |
1952 | { | |
1953 | fl_table_size = 20; | |
1954 | fl_table_next = 0; | |
c5aa993b | 1955 | filename_language_table = |
c906108c | 1956 | xmalloc (fl_table_size * sizeof (*filename_language_table)); |
c5aa993b JM |
1957 | add_filename_language (".c", language_c); |
1958 | add_filename_language (".C", language_cplus); | |
1959 | add_filename_language (".cc", language_cplus); | |
1960 | add_filename_language (".cp", language_cplus); | |
1961 | add_filename_language (".cpp", language_cplus); | |
1962 | add_filename_language (".cxx", language_cplus); | |
1963 | add_filename_language (".c++", language_cplus); | |
1964 | add_filename_language (".java", language_java); | |
c906108c | 1965 | add_filename_language (".class", language_java); |
c5aa993b JM |
1966 | add_filename_language (".ch", language_chill); |
1967 | add_filename_language (".c186", language_chill); | |
1968 | add_filename_language (".c286", language_chill); | |
1969 | add_filename_language (".f", language_fortran); | |
1970 | add_filename_language (".F", language_fortran); | |
1971 | add_filename_language (".s", language_asm); | |
1972 | add_filename_language (".S", language_asm); | |
c6fd39cd PM |
1973 | add_filename_language (".pas", language_pascal); |
1974 | add_filename_language (".p", language_pascal); | |
1975 | add_filename_language (".pp", language_pascal); | |
c906108c SS |
1976 | } |
1977 | } | |
1978 | ||
1979 | enum language | |
fba45db2 | 1980 | deduce_language_from_filename (char *filename) |
c906108c SS |
1981 | { |
1982 | int i; | |
1983 | char *cp; | |
1984 | ||
1985 | if (filename != NULL) | |
1986 | if ((cp = strrchr (filename, '.')) != NULL) | |
1987 | for (i = 0; i < fl_table_next; i++) | |
1988 | if (strcmp (cp, filename_language_table[i].ext) == 0) | |
1989 | return filename_language_table[i].lang; | |
1990 | ||
1991 | return language_unknown; | |
1992 | } | |
1993 | \f | |
1994 | /* allocate_symtab: | |
1995 | ||
1996 | Allocate and partly initialize a new symbol table. Return a pointer | |
1997 | to it. error() if no space. | |
1998 | ||
1999 | Caller must set these fields: | |
c5aa993b JM |
2000 | LINETABLE(symtab) |
2001 | symtab->blockvector | |
2002 | symtab->dirname | |
2003 | symtab->free_code | |
2004 | symtab->free_ptr | |
2005 | possibly free_named_symtabs (symtab->filename); | |
c906108c SS |
2006 | */ |
2007 | ||
2008 | struct symtab * | |
fba45db2 | 2009 | allocate_symtab (char *filename, struct objfile *objfile) |
c906108c SS |
2010 | { |
2011 | register struct symtab *symtab; | |
2012 | ||
2013 | symtab = (struct symtab *) | |
c5aa993b | 2014 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct symtab)); |
c906108c | 2015 | memset (symtab, 0, sizeof (*symtab)); |
c5aa993b JM |
2016 | symtab->filename = obsavestring (filename, strlen (filename), |
2017 | &objfile->symbol_obstack); | |
2018 | symtab->fullname = NULL; | |
2019 | symtab->language = deduce_language_from_filename (filename); | |
2020 | symtab->debugformat = obsavestring ("unknown", 7, | |
2021 | &objfile->symbol_obstack); | |
c906108c SS |
2022 | |
2023 | /* Hook it to the objfile it comes from */ | |
2024 | ||
c5aa993b JM |
2025 | symtab->objfile = objfile; |
2026 | symtab->next = objfile->symtabs; | |
2027 | objfile->symtabs = symtab; | |
c906108c SS |
2028 | |
2029 | /* FIXME: This should go away. It is only defined for the Z8000, | |
2030 | and the Z8000 definition of this macro doesn't have anything to | |
2031 | do with the now-nonexistent EXTRA_SYMTAB_INFO macro, it's just | |
2032 | here for convenience. */ | |
2033 | #ifdef INIT_EXTRA_SYMTAB_INFO | |
2034 | INIT_EXTRA_SYMTAB_INFO (symtab); | |
2035 | #endif | |
2036 | ||
2037 | return (symtab); | |
2038 | } | |
2039 | ||
2040 | struct partial_symtab * | |
fba45db2 | 2041 | allocate_psymtab (char *filename, struct objfile *objfile) |
c906108c SS |
2042 | { |
2043 | struct partial_symtab *psymtab; | |
2044 | ||
c5aa993b | 2045 | if (objfile->free_psymtabs) |
c906108c | 2046 | { |
c5aa993b JM |
2047 | psymtab = objfile->free_psymtabs; |
2048 | objfile->free_psymtabs = psymtab->next; | |
c906108c SS |
2049 | } |
2050 | else | |
2051 | psymtab = (struct partial_symtab *) | |
c5aa993b | 2052 | obstack_alloc (&objfile->psymbol_obstack, |
c906108c SS |
2053 | sizeof (struct partial_symtab)); |
2054 | ||
2055 | memset (psymtab, 0, sizeof (struct partial_symtab)); | |
c5aa993b JM |
2056 | psymtab->filename = obsavestring (filename, strlen (filename), |
2057 | &objfile->psymbol_obstack); | |
2058 | psymtab->symtab = NULL; | |
c906108c SS |
2059 | |
2060 | /* Prepend it to the psymtab list for the objfile it belongs to. | |
2061 | Psymtabs are searched in most recent inserted -> least recent | |
2062 | inserted order. */ | |
2063 | ||
c5aa993b JM |
2064 | psymtab->objfile = objfile; |
2065 | psymtab->next = objfile->psymtabs; | |
2066 | objfile->psymtabs = psymtab; | |
c906108c SS |
2067 | #if 0 |
2068 | { | |
2069 | struct partial_symtab **prev_pst; | |
c5aa993b JM |
2070 | psymtab->objfile = objfile; |
2071 | psymtab->next = NULL; | |
2072 | prev_pst = &(objfile->psymtabs); | |
c906108c | 2073 | while ((*prev_pst) != NULL) |
c5aa993b | 2074 | prev_pst = &((*prev_pst)->next); |
c906108c | 2075 | (*prev_pst) = psymtab; |
c5aa993b | 2076 | } |
c906108c | 2077 | #endif |
c5aa993b | 2078 | |
c906108c SS |
2079 | return (psymtab); |
2080 | } | |
2081 | ||
2082 | void | |
fba45db2 | 2083 | discard_psymtab (struct partial_symtab *pst) |
c906108c SS |
2084 | { |
2085 | struct partial_symtab **prev_pst; | |
2086 | ||
2087 | /* From dbxread.c: | |
2088 | Empty psymtabs happen as a result of header files which don't | |
2089 | have any symbols in them. There can be a lot of them. But this | |
2090 | check is wrong, in that a psymtab with N_SLINE entries but | |
2091 | nothing else is not empty, but we don't realize that. Fixing | |
2092 | that without slowing things down might be tricky. */ | |
2093 | ||
2094 | /* First, snip it out of the psymtab chain */ | |
2095 | ||
2096 | prev_pst = &(pst->objfile->psymtabs); | |
2097 | while ((*prev_pst) != pst) | |
2098 | prev_pst = &((*prev_pst)->next); | |
2099 | (*prev_pst) = pst->next; | |
2100 | ||
2101 | /* Next, put it on a free list for recycling */ | |
2102 | ||
2103 | pst->next = pst->objfile->free_psymtabs; | |
2104 | pst->objfile->free_psymtabs = pst; | |
2105 | } | |
c906108c | 2106 | \f |
c5aa993b | 2107 | |
c906108c SS |
2108 | /* Reset all data structures in gdb which may contain references to symbol |
2109 | table data. */ | |
2110 | ||
2111 | void | |
fba45db2 | 2112 | clear_symtab_users (void) |
c906108c SS |
2113 | { |
2114 | /* Someday, we should do better than this, by only blowing away | |
2115 | the things that really need to be blown. */ | |
2116 | clear_value_history (); | |
2117 | clear_displays (); | |
2118 | clear_internalvars (); | |
2119 | breakpoint_re_set (); | |
2120 | set_default_breakpoint (0, 0, 0, 0); | |
2121 | current_source_symtab = 0; | |
2122 | current_source_line = 0; | |
2123 | clear_pc_function_cache (); | |
11cf8741 JM |
2124 | if (target_new_objfile_hook) |
2125 | target_new_objfile_hook (NULL); | |
c906108c SS |
2126 | } |
2127 | ||
74b7792f AC |
2128 | static void |
2129 | clear_symtab_users_cleanup (void *ignore) | |
2130 | { | |
2131 | clear_symtab_users (); | |
2132 | } | |
2133 | ||
c906108c SS |
2134 | /* clear_symtab_users_once: |
2135 | ||
2136 | This function is run after symbol reading, or from a cleanup. | |
2137 | If an old symbol table was obsoleted, the old symbol table | |
2138 | has been blown away, but the other GDB data structures that may | |
2139 | reference it have not yet been cleared or re-directed. (The old | |
2140 | symtab was zapped, and the cleanup queued, in free_named_symtab() | |
2141 | below.) | |
2142 | ||
2143 | This function can be queued N times as a cleanup, or called | |
2144 | directly; it will do all the work the first time, and then will be a | |
2145 | no-op until the next time it is queued. This works by bumping a | |
2146 | counter at queueing time. Much later when the cleanup is run, or at | |
2147 | the end of symbol processing (in case the cleanup is discarded), if | |
2148 | the queued count is greater than the "done-count", we do the work | |
2149 | and set the done-count to the queued count. If the queued count is | |
2150 | less than or equal to the done-count, we just ignore the call. This | |
2151 | is needed because reading a single .o file will often replace many | |
2152 | symtabs (one per .h file, for example), and we don't want to reset | |
2153 | the breakpoints N times in the user's face. | |
2154 | ||
2155 | The reason we both queue a cleanup, and call it directly after symbol | |
2156 | reading, is because the cleanup protects us in case of errors, but is | |
2157 | discarded if symbol reading is successful. */ | |
2158 | ||
2159 | #if 0 | |
2160 | /* FIXME: As free_named_symtabs is currently a big noop this function | |
2161 | is no longer needed. */ | |
a14ed312 | 2162 | static void clear_symtab_users_once (void); |
c906108c SS |
2163 | |
2164 | static int clear_symtab_users_queued; | |
2165 | static int clear_symtab_users_done; | |
2166 | ||
2167 | static void | |
fba45db2 | 2168 | clear_symtab_users_once (void) |
c906108c SS |
2169 | { |
2170 | /* Enforce once-per-`do_cleanups'-semantics */ | |
2171 | if (clear_symtab_users_queued <= clear_symtab_users_done) | |
2172 | return; | |
2173 | clear_symtab_users_done = clear_symtab_users_queued; | |
2174 | ||
2175 | clear_symtab_users (); | |
2176 | } | |
2177 | #endif | |
2178 | ||
2179 | /* Delete the specified psymtab, and any others that reference it. */ | |
2180 | ||
2181 | static void | |
fba45db2 | 2182 | cashier_psymtab (struct partial_symtab *pst) |
c906108c SS |
2183 | { |
2184 | struct partial_symtab *ps, *pprev = NULL; | |
2185 | int i; | |
2186 | ||
2187 | /* Find its previous psymtab in the chain */ | |
c5aa993b JM |
2188 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) |
2189 | { | |
2190 | if (ps == pst) | |
2191 | break; | |
2192 | pprev = ps; | |
2193 | } | |
c906108c | 2194 | |
c5aa993b JM |
2195 | if (ps) |
2196 | { | |
2197 | /* Unhook it from the chain. */ | |
2198 | if (ps == pst->objfile->psymtabs) | |
2199 | pst->objfile->psymtabs = ps->next; | |
2200 | else | |
2201 | pprev->next = ps->next; | |
2202 | ||
2203 | /* FIXME, we can't conveniently deallocate the entries in the | |
2204 | partial_symbol lists (global_psymbols/static_psymbols) that | |
2205 | this psymtab points to. These just take up space until all | |
2206 | the psymtabs are reclaimed. Ditto the dependencies list and | |
2207 | filename, which are all in the psymbol_obstack. */ | |
2208 | ||
2209 | /* We need to cashier any psymtab that has this one as a dependency... */ | |
2210 | again: | |
2211 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) | |
2212 | { | |
2213 | for (i = 0; i < ps->number_of_dependencies; i++) | |
2214 | { | |
2215 | if (ps->dependencies[i] == pst) | |
2216 | { | |
2217 | cashier_psymtab (ps); | |
2218 | goto again; /* Must restart, chain has been munged. */ | |
2219 | } | |
2220 | } | |
c906108c | 2221 | } |
c906108c | 2222 | } |
c906108c SS |
2223 | } |
2224 | ||
2225 | /* If a symtab or psymtab for filename NAME is found, free it along | |
2226 | with any dependent breakpoints, displays, etc. | |
2227 | Used when loading new versions of object modules with the "add-file" | |
2228 | command. This is only called on the top-level symtab or psymtab's name; | |
2229 | it is not called for subsidiary files such as .h files. | |
2230 | ||
2231 | Return value is 1 if we blew away the environment, 0 if not. | |
7e73cedf | 2232 | FIXME. The return value appears to never be used. |
c906108c SS |
2233 | |
2234 | FIXME. I think this is not the best way to do this. We should | |
2235 | work on being gentler to the environment while still cleaning up | |
2236 | all stray pointers into the freed symtab. */ | |
2237 | ||
2238 | int | |
fba45db2 | 2239 | free_named_symtabs (char *name) |
c906108c SS |
2240 | { |
2241 | #if 0 | |
2242 | /* FIXME: With the new method of each objfile having it's own | |
2243 | psymtab list, this function needs serious rethinking. In particular, | |
2244 | why was it ever necessary to toss psymtabs with specific compilation | |
2245 | unit filenames, as opposed to all psymtabs from a particular symbol | |
2246 | file? -- fnf | |
2247 | Well, the answer is that some systems permit reloading of particular | |
2248 | compilation units. We want to blow away any old info about these | |
2249 | compilation units, regardless of which objfiles they arrived in. --gnu. */ | |
2250 | ||
2251 | register struct symtab *s; | |
2252 | register struct symtab *prev; | |
2253 | register struct partial_symtab *ps; | |
2254 | struct blockvector *bv; | |
2255 | int blewit = 0; | |
2256 | ||
2257 | /* We only wack things if the symbol-reload switch is set. */ | |
2258 | if (!symbol_reloading) | |
2259 | return 0; | |
2260 | ||
2261 | /* Some symbol formats have trouble providing file names... */ | |
2262 | if (name == 0 || *name == '\0') | |
2263 | return 0; | |
2264 | ||
2265 | /* Look for a psymtab with the specified name. */ | |
2266 | ||
2267 | again2: | |
c5aa993b JM |
2268 | for (ps = partial_symtab_list; ps; ps = ps->next) |
2269 | { | |
2270 | if (STREQ (name, ps->filename)) | |
2271 | { | |
2272 | cashier_psymtab (ps); /* Blow it away...and its little dog, too. */ | |
2273 | goto again2; /* Must restart, chain has been munged */ | |
2274 | } | |
c906108c | 2275 | } |
c906108c SS |
2276 | |
2277 | /* Look for a symtab with the specified name. */ | |
2278 | ||
2279 | for (s = symtab_list; s; s = s->next) | |
2280 | { | |
2281 | if (STREQ (name, s->filename)) | |
2282 | break; | |
2283 | prev = s; | |
2284 | } | |
2285 | ||
2286 | if (s) | |
2287 | { | |
2288 | if (s == symtab_list) | |
2289 | symtab_list = s->next; | |
2290 | else | |
2291 | prev->next = s->next; | |
2292 | ||
2293 | /* For now, queue a delete for all breakpoints, displays, etc., whether | |
c5aa993b JM |
2294 | or not they depend on the symtab being freed. This should be |
2295 | changed so that only those data structures affected are deleted. */ | |
c906108c SS |
2296 | |
2297 | /* But don't delete anything if the symtab is empty. | |
c5aa993b JM |
2298 | This test is necessary due to a bug in "dbxread.c" that |
2299 | causes empty symtabs to be created for N_SO symbols that | |
2300 | contain the pathname of the object file. (This problem | |
2301 | has been fixed in GDB 3.9x). */ | |
c906108c SS |
2302 | |
2303 | bv = BLOCKVECTOR (s); | |
2304 | if (BLOCKVECTOR_NBLOCKS (bv) > 2 | |
2305 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) | |
2306 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK))) | |
2307 | { | |
2308 | complain (&oldsyms_complaint, name); | |
2309 | ||
2310 | clear_symtab_users_queued++; | |
2311 | make_cleanup (clear_symtab_users_once, 0); | |
2312 | blewit = 1; | |
c5aa993b JM |
2313 | } |
2314 | else | |
2315 | { | |
c906108c SS |
2316 | complain (&empty_symtab_complaint, name); |
2317 | } | |
2318 | ||
2319 | free_symtab (s); | |
2320 | } | |
2321 | else | |
2322 | { | |
2323 | /* It is still possible that some breakpoints will be affected | |
c5aa993b JM |
2324 | even though no symtab was found, since the file might have |
2325 | been compiled without debugging, and hence not be associated | |
2326 | with a symtab. In order to handle this correctly, we would need | |
2327 | to keep a list of text address ranges for undebuggable files. | |
2328 | For now, we do nothing, since this is a fairly obscure case. */ | |
c906108c SS |
2329 | ; |
2330 | } | |
2331 | ||
2332 | /* FIXME, what about the minimal symbol table? */ | |
2333 | return blewit; | |
2334 | #else | |
2335 | return (0); | |
2336 | #endif | |
2337 | } | |
2338 | \f | |
2339 | /* Allocate and partially fill a partial symtab. It will be | |
2340 | completely filled at the end of the symbol list. | |
2341 | ||
d4f3574e | 2342 | FILENAME is the name of the symbol-file we are reading from. */ |
c906108c SS |
2343 | |
2344 | struct partial_symtab * | |
fba45db2 KB |
2345 | start_psymtab_common (struct objfile *objfile, |
2346 | struct section_offsets *section_offsets, char *filename, | |
2347 | CORE_ADDR textlow, struct partial_symbol **global_syms, | |
2348 | struct partial_symbol **static_syms) | |
c906108c SS |
2349 | { |
2350 | struct partial_symtab *psymtab; | |
2351 | ||
2352 | psymtab = allocate_psymtab (filename, objfile); | |
c5aa993b JM |
2353 | psymtab->section_offsets = section_offsets; |
2354 | psymtab->textlow = textlow; | |
2355 | psymtab->texthigh = psymtab->textlow; /* default */ | |
2356 | psymtab->globals_offset = global_syms - objfile->global_psymbols.list; | |
2357 | psymtab->statics_offset = static_syms - objfile->static_psymbols.list; | |
c906108c SS |
2358 | return (psymtab); |
2359 | } | |
2360 | \f | |
2361 | /* Add a symbol with a long value to a psymtab. | |
2362 | Since one arg is a struct, we pass in a ptr and deref it (sigh). */ | |
2363 | ||
2364 | void | |
fba45db2 KB |
2365 | add_psymbol_to_list (char *name, int namelength, namespace_enum namespace, |
2366 | enum address_class class, | |
2367 | struct psymbol_allocation_list *list, long val, /* Value as a long */ | |
2368 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ | |
2369 | enum language language, struct objfile *objfile) | |
c906108c SS |
2370 | { |
2371 | register struct partial_symbol *psym; | |
2372 | char *buf = alloca (namelength + 1); | |
2373 | /* psymbol is static so that there will be no uninitialized gaps in the | |
2374 | structure which might contain random data, causing cache misses in | |
2375 | bcache. */ | |
2376 | static struct partial_symbol psymbol; | |
2377 | ||
2378 | /* Create local copy of the partial symbol */ | |
2379 | memcpy (buf, name, namelength); | |
2380 | buf[namelength] = '\0'; | |
af5f3db6 | 2381 | SYMBOL_NAME (&psymbol) = bcache (buf, namelength + 1, objfile->psymbol_cache); |
c906108c SS |
2382 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ |
2383 | if (val != 0) | |
2384 | { | |
2385 | SYMBOL_VALUE (&psymbol) = val; | |
2386 | } | |
2387 | else | |
2388 | { | |
2389 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; | |
2390 | } | |
2391 | SYMBOL_SECTION (&psymbol) = 0; | |
2392 | SYMBOL_LANGUAGE (&psymbol) = language; | |
2393 | PSYMBOL_NAMESPACE (&psymbol) = namespace; | |
2394 | PSYMBOL_CLASS (&psymbol) = class; | |
2395 | SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol, language); | |
2396 | ||
2397 | /* Stash the partial symbol away in the cache */ | |
af5f3db6 | 2398 | psym = bcache (&psymbol, sizeof (struct partial_symbol), objfile->psymbol_cache); |
c906108c SS |
2399 | |
2400 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ | |
2401 | if (list->next >= list->list + list->size) | |
2402 | { | |
2403 | extend_psymbol_list (list, objfile); | |
2404 | } | |
2405 | *list->next++ = psym; | |
2406 | OBJSTAT (objfile, n_psyms++); | |
2407 | } | |
2408 | ||
2409 | /* Add a symbol with a long value to a psymtab. This differs from | |
2410 | * add_psymbol_to_list above in taking both a mangled and a demangled | |
2411 | * name. */ | |
2412 | ||
2413 | void | |
fba45db2 KB |
2414 | add_psymbol_with_dem_name_to_list (char *name, int namelength, char *dem_name, |
2415 | int dem_namelength, namespace_enum namespace, | |
2416 | enum address_class class, | |
2417 | struct psymbol_allocation_list *list, long val, /* Value as a long */ | |
2418 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ | |
2419 | enum language language, | |
2420 | struct objfile *objfile) | |
c906108c SS |
2421 | { |
2422 | register struct partial_symbol *psym; | |
2423 | char *buf = alloca (namelength + 1); | |
2424 | /* psymbol is static so that there will be no uninitialized gaps in the | |
2425 | structure which might contain random data, causing cache misses in | |
2426 | bcache. */ | |
2427 | static struct partial_symbol psymbol; | |
2428 | ||
2429 | /* Create local copy of the partial symbol */ | |
2430 | ||
2431 | memcpy (buf, name, namelength); | |
2432 | buf[namelength] = '\0'; | |
af5f3db6 | 2433 | SYMBOL_NAME (&psymbol) = bcache (buf, namelength + 1, objfile->psymbol_cache); |
c906108c SS |
2434 | |
2435 | buf = alloca (dem_namelength + 1); | |
2436 | memcpy (buf, dem_name, dem_namelength); | |
2437 | buf[dem_namelength] = '\0'; | |
c5aa993b | 2438 | |
c906108c SS |
2439 | switch (language) |
2440 | { | |
c5aa993b JM |
2441 | case language_c: |
2442 | case language_cplus: | |
2443 | SYMBOL_CPLUS_DEMANGLED_NAME (&psymbol) = | |
af5f3db6 | 2444 | bcache (buf, dem_namelength + 1, objfile->psymbol_cache); |
c5aa993b JM |
2445 | break; |
2446 | case language_chill: | |
2447 | SYMBOL_CHILL_DEMANGLED_NAME (&psymbol) = | |
af5f3db6 | 2448 | bcache (buf, dem_namelength + 1, objfile->psymbol_cache); |
c5aa993b | 2449 | |
c906108c SS |
2450 | /* FIXME What should be done for the default case? Ignoring for now. */ |
2451 | } | |
2452 | ||
2453 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ | |
2454 | if (val != 0) | |
2455 | { | |
2456 | SYMBOL_VALUE (&psymbol) = val; | |
2457 | } | |
2458 | else | |
2459 | { | |
2460 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; | |
2461 | } | |
2462 | SYMBOL_SECTION (&psymbol) = 0; | |
2463 | SYMBOL_LANGUAGE (&psymbol) = language; | |
2464 | PSYMBOL_NAMESPACE (&psymbol) = namespace; | |
2465 | PSYMBOL_CLASS (&psymbol) = class; | |
2466 | SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol, language); | |
2467 | ||
2468 | /* Stash the partial symbol away in the cache */ | |
af5f3db6 | 2469 | psym = bcache (&psymbol, sizeof (struct partial_symbol), objfile->psymbol_cache); |
c906108c SS |
2470 | |
2471 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ | |
2472 | if (list->next >= list->list + list->size) | |
2473 | { | |
2474 | extend_psymbol_list (list, objfile); | |
2475 | } | |
2476 | *list->next++ = psym; | |
2477 | OBJSTAT (objfile, n_psyms++); | |
2478 | } | |
2479 | ||
2480 | /* Initialize storage for partial symbols. */ | |
2481 | ||
2482 | void | |
fba45db2 | 2483 | init_psymbol_list (struct objfile *objfile, int total_symbols) |
c906108c SS |
2484 | { |
2485 | /* Free any previously allocated psymbol lists. */ | |
c5aa993b JM |
2486 | |
2487 | if (objfile->global_psymbols.list) | |
c906108c | 2488 | { |
aac7f4ea | 2489 | xmfree (objfile->md, (PTR) objfile->global_psymbols.list); |
c906108c | 2490 | } |
c5aa993b | 2491 | if (objfile->static_psymbols.list) |
c906108c | 2492 | { |
aac7f4ea | 2493 | xmfree (objfile->md, (PTR) objfile->static_psymbols.list); |
c906108c | 2494 | } |
c5aa993b | 2495 | |
c906108c SS |
2496 | /* Current best guess is that approximately a twentieth |
2497 | of the total symbols (in a debugging file) are global or static | |
2498 | oriented symbols */ | |
c906108c | 2499 | |
c5aa993b JM |
2500 | objfile->global_psymbols.size = total_symbols / 10; |
2501 | objfile->static_psymbols.size = total_symbols / 10; | |
2502 | ||
2503 | if (objfile->global_psymbols.size > 0) | |
c906108c | 2504 | { |
c5aa993b JM |
2505 | objfile->global_psymbols.next = |
2506 | objfile->global_psymbols.list = (struct partial_symbol **) | |
2507 | xmmalloc (objfile->md, (objfile->global_psymbols.size | |
2508 | * sizeof (struct partial_symbol *))); | |
c906108c | 2509 | } |
c5aa993b | 2510 | if (objfile->static_psymbols.size > 0) |
c906108c | 2511 | { |
c5aa993b JM |
2512 | objfile->static_psymbols.next = |
2513 | objfile->static_psymbols.list = (struct partial_symbol **) | |
2514 | xmmalloc (objfile->md, (objfile->static_psymbols.size | |
2515 | * sizeof (struct partial_symbol *))); | |
c906108c SS |
2516 | } |
2517 | } | |
2518 | ||
2519 | /* OVERLAYS: | |
2520 | The following code implements an abstraction for debugging overlay sections. | |
2521 | ||
2522 | The target model is as follows: | |
2523 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2524 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2525 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2526 | sections, one by one, from the load address into the VMA address. |
c906108c | 2527 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2528 | sections should be considered to be mapped from the VMA to the LMA. |
2529 | This information is used for symbol lookup, and memory read/write. | |
2530 | For instance, if a section has been mapped then its contents | |
2531 | should be read from the VMA, otherwise from the LMA. | |
c906108c SS |
2532 | |
2533 | Two levels of debugger support for overlays are available. One is | |
2534 | "manual", in which the debugger relies on the user to tell it which | |
2535 | overlays are currently mapped. This level of support is | |
2536 | implemented entirely in the core debugger, and the information about | |
2537 | whether a section is mapped is kept in the objfile->obj_section table. | |
2538 | ||
2539 | The second level of support is "automatic", and is only available if | |
2540 | the target-specific code provides functionality to read the target's | |
2541 | overlay mapping table, and translate its contents for the debugger | |
2542 | (by updating the mapped state information in the obj_section tables). | |
2543 | ||
2544 | The interface is as follows: | |
c5aa993b JM |
2545 | User commands: |
2546 | overlay map <name> -- tell gdb to consider this section mapped | |
2547 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2548 | overlay list -- list the sections that GDB thinks are mapped | |
2549 | overlay read-target -- get the target's state of what's mapped | |
2550 | overlay off/manual/auto -- set overlay debugging state | |
2551 | Functional interface: | |
2552 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2553 | section, return that section. | |
2554 | find_pc_overlay(pc): find any overlay section that contains | |
2555 | the pc, either in its VMA or its LMA | |
2556 | overlay_is_mapped(sect): true if overlay is marked as mapped | |
2557 | section_is_overlay(sect): true if section's VMA != LMA | |
2558 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2559 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 2560 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
2561 | overlay_mapped_address(...): map an address from section's LMA to VMA |
2562 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2563 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2564 | either in VMA or LMA depending on whether | |
2565 | the symbol's section is currently mapped | |
c906108c SS |
2566 | */ |
2567 | ||
2568 | /* Overlay debugging state: */ | |
2569 | ||
d874f1e2 | 2570 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c906108c SS |
2571 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state */ |
2572 | ||
2573 | /* Target vector for refreshing overlay mapped state */ | |
a14ed312 | 2574 | static void simple_overlay_update (struct obj_section *); |
507f3c78 | 2575 | void (*target_overlay_update) (struct obj_section *) = simple_overlay_update; |
c906108c SS |
2576 | |
2577 | /* Function: section_is_overlay (SECTION) | |
2578 | Returns true if SECTION has VMA not equal to LMA, ie. | |
2579 | SECTION is loaded at an address different from where it will "run". */ | |
2580 | ||
2581 | int | |
fba45db2 | 2582 | section_is_overlay (asection *section) |
c906108c | 2583 | { |
fbd35540 MS |
2584 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ |
2585 | ||
c906108c SS |
2586 | if (overlay_debugging) |
2587 | if (section && section->lma != 0 && | |
2588 | section->vma != section->lma) | |
2589 | return 1; | |
2590 | ||
2591 | return 0; | |
2592 | } | |
2593 | ||
2594 | /* Function: overlay_invalidate_all (void) | |
2595 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
2596 | ||
2597 | static void | |
fba45db2 | 2598 | overlay_invalidate_all (void) |
c906108c | 2599 | { |
c5aa993b | 2600 | struct objfile *objfile; |
c906108c SS |
2601 | struct obj_section *sect; |
2602 | ||
2603 | ALL_OBJSECTIONS (objfile, sect) | |
2604 | if (section_is_overlay (sect->the_bfd_section)) | |
c5aa993b | 2605 | sect->ovly_mapped = -1; |
c906108c SS |
2606 | } |
2607 | ||
2608 | /* Function: overlay_is_mapped (SECTION) | |
2609 | Returns true if section is an overlay, and is currently mapped. | |
2610 | Private: public access is thru function section_is_mapped. | |
2611 | ||
2612 | Access to the ovly_mapped flag is restricted to this function, so | |
2613 | that we can do automatic update. If the global flag | |
2614 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
2615 | overlay_invalidate_all. If the mapped state of the particular | |
2616 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
2617 | ||
c5aa993b | 2618 | static int |
fba45db2 | 2619 | overlay_is_mapped (struct obj_section *osect) |
c906108c SS |
2620 | { |
2621 | if (osect == 0 || !section_is_overlay (osect->the_bfd_section)) | |
2622 | return 0; | |
2623 | ||
c5aa993b | 2624 | switch (overlay_debugging) |
c906108c SS |
2625 | { |
2626 | default: | |
d874f1e2 | 2627 | case ovly_off: |
c5aa993b | 2628 | return 0; /* overlay debugging off */ |
d874f1e2 | 2629 | case ovly_auto: /* overlay debugging automatic */ |
c906108c | 2630 | /* Unles there is a target_overlay_update function, |
c5aa993b | 2631 | there's really nothing useful to do here (can't really go auto) */ |
c906108c SS |
2632 | if (target_overlay_update) |
2633 | { | |
2634 | if (overlay_cache_invalid) | |
2635 | { | |
2636 | overlay_invalidate_all (); | |
2637 | overlay_cache_invalid = 0; | |
2638 | } | |
2639 | if (osect->ovly_mapped == -1) | |
2640 | (*target_overlay_update) (osect); | |
2641 | } | |
2642 | /* fall thru to manual case */ | |
d874f1e2 | 2643 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
2644 | return osect->ovly_mapped == 1; |
2645 | } | |
2646 | } | |
2647 | ||
2648 | /* Function: section_is_mapped | |
2649 | Returns true if section is an overlay, and is currently mapped. */ | |
2650 | ||
2651 | int | |
fba45db2 | 2652 | section_is_mapped (asection *section) |
c906108c | 2653 | { |
c5aa993b | 2654 | struct objfile *objfile; |
c906108c SS |
2655 | struct obj_section *osect; |
2656 | ||
2657 | if (overlay_debugging) | |
2658 | if (section && section_is_overlay (section)) | |
2659 | ALL_OBJSECTIONS (objfile, osect) | |
2660 | if (osect->the_bfd_section == section) | |
c5aa993b | 2661 | return overlay_is_mapped (osect); |
c906108c SS |
2662 | |
2663 | return 0; | |
2664 | } | |
2665 | ||
2666 | /* Function: pc_in_unmapped_range | |
2667 | If PC falls into the lma range of SECTION, return true, else false. */ | |
2668 | ||
2669 | CORE_ADDR | |
fba45db2 | 2670 | pc_in_unmapped_range (CORE_ADDR pc, asection *section) |
c906108c | 2671 | { |
fbd35540 MS |
2672 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ |
2673 | ||
c906108c SS |
2674 | int size; |
2675 | ||
2676 | if (overlay_debugging) | |
2677 | if (section && section_is_overlay (section)) | |
2678 | { | |
2679 | size = bfd_get_section_size_before_reloc (section); | |
2680 | if (section->lma <= pc && pc < section->lma + size) | |
2681 | return 1; | |
2682 | } | |
2683 | return 0; | |
2684 | } | |
2685 | ||
2686 | /* Function: pc_in_mapped_range | |
2687 | If PC falls into the vma range of SECTION, return true, else false. */ | |
2688 | ||
2689 | CORE_ADDR | |
fba45db2 | 2690 | pc_in_mapped_range (CORE_ADDR pc, asection *section) |
c906108c | 2691 | { |
fbd35540 MS |
2692 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ |
2693 | ||
c906108c SS |
2694 | int size; |
2695 | ||
2696 | if (overlay_debugging) | |
2697 | if (section && section_is_overlay (section)) | |
2698 | { | |
2699 | size = bfd_get_section_size_before_reloc (section); | |
2700 | if (section->vma <= pc && pc < section->vma + size) | |
2701 | return 1; | |
2702 | } | |
2703 | return 0; | |
2704 | } | |
2705 | ||
9ec8e6a0 JB |
2706 | |
2707 | /* Return true if the mapped ranges of sections A and B overlap, false | |
2708 | otherwise. */ | |
2709 | int | |
2710 | sections_overlap (asection *a, asection *b) | |
2711 | { | |
fbd35540 MS |
2712 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ |
2713 | ||
9ec8e6a0 JB |
2714 | CORE_ADDR a_start = a->vma; |
2715 | CORE_ADDR a_end = a->vma + bfd_get_section_size_before_reloc (a); | |
2716 | CORE_ADDR b_start = b->vma; | |
2717 | CORE_ADDR b_end = b->vma + bfd_get_section_size_before_reloc (b); | |
2718 | ||
2719 | return (a_start < b_end && b_start < a_end); | |
2720 | } | |
2721 | ||
c906108c SS |
2722 | /* Function: overlay_unmapped_address (PC, SECTION) |
2723 | Returns the address corresponding to PC in the unmapped (load) range. | |
2724 | May be the same as PC. */ | |
2725 | ||
2726 | CORE_ADDR | |
fba45db2 | 2727 | overlay_unmapped_address (CORE_ADDR pc, asection *section) |
c906108c | 2728 | { |
fbd35540 MS |
2729 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ |
2730 | ||
c906108c SS |
2731 | if (overlay_debugging) |
2732 | if (section && section_is_overlay (section) && | |
2733 | pc_in_mapped_range (pc, section)) | |
2734 | return pc + section->lma - section->vma; | |
2735 | ||
2736 | return pc; | |
2737 | } | |
2738 | ||
2739 | /* Function: overlay_mapped_address (PC, SECTION) | |
2740 | Returns the address corresponding to PC in the mapped (runtime) range. | |
2741 | May be the same as PC. */ | |
2742 | ||
2743 | CORE_ADDR | |
fba45db2 | 2744 | overlay_mapped_address (CORE_ADDR pc, asection *section) |
c906108c | 2745 | { |
fbd35540 MS |
2746 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ |
2747 | ||
c906108c SS |
2748 | if (overlay_debugging) |
2749 | if (section && section_is_overlay (section) && | |
2750 | pc_in_unmapped_range (pc, section)) | |
2751 | return pc + section->vma - section->lma; | |
2752 | ||
2753 | return pc; | |
2754 | } | |
2755 | ||
2756 | ||
2757 | /* Function: symbol_overlayed_address | |
2758 | Return one of two addresses (relative to the VMA or to the LMA), | |
2759 | depending on whether the section is mapped or not. */ | |
2760 | ||
c5aa993b | 2761 | CORE_ADDR |
fba45db2 | 2762 | symbol_overlayed_address (CORE_ADDR address, asection *section) |
c906108c SS |
2763 | { |
2764 | if (overlay_debugging) | |
2765 | { | |
2766 | /* If the symbol has no section, just return its regular address. */ | |
2767 | if (section == 0) | |
2768 | return address; | |
2769 | /* If the symbol's section is not an overlay, just return its address */ | |
2770 | if (!section_is_overlay (section)) | |
2771 | return address; | |
2772 | /* If the symbol's section is mapped, just return its address */ | |
2773 | if (section_is_mapped (section)) | |
2774 | return address; | |
2775 | /* | |
2776 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
2777 | * then return its LOADED address rather than its vma address!! | |
2778 | */ | |
2779 | return overlay_unmapped_address (address, section); | |
2780 | } | |
2781 | return address; | |
2782 | } | |
2783 | ||
2784 | /* Function: find_pc_overlay (PC) | |
2785 | Return the best-match overlay section for PC: | |
2786 | If PC matches a mapped overlay section's VMA, return that section. | |
2787 | Else if PC matches an unmapped section's VMA, return that section. | |
2788 | Else if PC matches an unmapped section's LMA, return that section. */ | |
2789 | ||
2790 | asection * | |
fba45db2 | 2791 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 2792 | { |
c5aa993b | 2793 | struct objfile *objfile; |
c906108c SS |
2794 | struct obj_section *osect, *best_match = NULL; |
2795 | ||
2796 | if (overlay_debugging) | |
2797 | ALL_OBJSECTIONS (objfile, osect) | |
2798 | if (section_is_overlay (osect->the_bfd_section)) | |
c5aa993b JM |
2799 | { |
2800 | if (pc_in_mapped_range (pc, osect->the_bfd_section)) | |
2801 | { | |
2802 | if (overlay_is_mapped (osect)) | |
2803 | return osect->the_bfd_section; | |
2804 | else | |
2805 | best_match = osect; | |
2806 | } | |
2807 | else if (pc_in_unmapped_range (pc, osect->the_bfd_section)) | |
2808 | best_match = osect; | |
2809 | } | |
c906108c SS |
2810 | return best_match ? best_match->the_bfd_section : NULL; |
2811 | } | |
2812 | ||
2813 | /* Function: find_pc_mapped_section (PC) | |
2814 | If PC falls into the VMA address range of an overlay section that is | |
2815 | currently marked as MAPPED, return that section. Else return NULL. */ | |
2816 | ||
2817 | asection * | |
fba45db2 | 2818 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 2819 | { |
c5aa993b | 2820 | struct objfile *objfile; |
c906108c SS |
2821 | struct obj_section *osect; |
2822 | ||
2823 | if (overlay_debugging) | |
2824 | ALL_OBJSECTIONS (objfile, osect) | |
2825 | if (pc_in_mapped_range (pc, osect->the_bfd_section) && | |
2826 | overlay_is_mapped (osect)) | |
c5aa993b | 2827 | return osect->the_bfd_section; |
c906108c SS |
2828 | |
2829 | return NULL; | |
2830 | } | |
2831 | ||
2832 | /* Function: list_overlays_command | |
2833 | Print a list of mapped sections and their PC ranges */ | |
2834 | ||
2835 | void | |
fba45db2 | 2836 | list_overlays_command (char *args, int from_tty) |
c906108c | 2837 | { |
c5aa993b JM |
2838 | int nmapped = 0; |
2839 | struct objfile *objfile; | |
c906108c SS |
2840 | struct obj_section *osect; |
2841 | ||
2842 | if (overlay_debugging) | |
2843 | ALL_OBJSECTIONS (objfile, osect) | |
2844 | if (overlay_is_mapped (osect)) | |
c5aa993b JM |
2845 | { |
2846 | const char *name; | |
2847 | bfd_vma lma, vma; | |
2848 | int size; | |
2849 | ||
2850 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
2851 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
2852 | size = bfd_get_section_size_before_reloc (osect->the_bfd_section); | |
2853 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); | |
2854 | ||
2855 | printf_filtered ("Section %s, loaded at ", name); | |
2856 | print_address_numeric (lma, 1, gdb_stdout); | |
2857 | puts_filtered (" - "); | |
2858 | print_address_numeric (lma + size, 1, gdb_stdout); | |
2859 | printf_filtered (", mapped at "); | |
2860 | print_address_numeric (vma, 1, gdb_stdout); | |
2861 | puts_filtered (" - "); | |
2862 | print_address_numeric (vma + size, 1, gdb_stdout); | |
2863 | puts_filtered ("\n"); | |
2864 | ||
2865 | nmapped++; | |
2866 | } | |
c906108c SS |
2867 | if (nmapped == 0) |
2868 | printf_filtered ("No sections are mapped.\n"); | |
2869 | } | |
2870 | ||
2871 | /* Function: map_overlay_command | |
2872 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
2873 | ||
2874 | void | |
fba45db2 | 2875 | map_overlay_command (char *args, int from_tty) |
c906108c | 2876 | { |
c5aa993b JM |
2877 | struct objfile *objfile, *objfile2; |
2878 | struct obj_section *sec, *sec2; | |
2879 | asection *bfdsec; | |
c906108c SS |
2880 | |
2881 | if (!overlay_debugging) | |
515ad16c EZ |
2882 | error ("\ |
2883 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ | |
2884 | the 'overlay manual' command."); | |
c906108c SS |
2885 | |
2886 | if (args == 0 || *args == 0) | |
2887 | error ("Argument required: name of an overlay section"); | |
2888 | ||
2889 | /* First, find a section matching the user supplied argument */ | |
2890 | ALL_OBJSECTIONS (objfile, sec) | |
2891 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
2892 | { |
2893 | /* Now, check to see if the section is an overlay. */ | |
2894 | bfdsec = sec->the_bfd_section; | |
2895 | if (!section_is_overlay (bfdsec)) | |
2896 | continue; /* not an overlay section */ | |
2897 | ||
2898 | /* Mark the overlay as "mapped" */ | |
2899 | sec->ovly_mapped = 1; | |
2900 | ||
2901 | /* Next, make a pass and unmap any sections that are | |
2902 | overlapped by this new section: */ | |
2903 | ALL_OBJSECTIONS (objfile2, sec2) | |
9ec8e6a0 JB |
2904 | if (sec2->ovly_mapped |
2905 | && sec != sec2 | |
2906 | && sec->the_bfd_section != sec2->the_bfd_section | |
2907 | && sections_overlap (sec->the_bfd_section, | |
2908 | sec2->the_bfd_section)) | |
c5aa993b JM |
2909 | { |
2910 | if (info_verbose) | |
2911 | printf_filtered ("Note: section %s unmapped by overlap\n", | |
2912 | bfd_section_name (objfile->obfd, | |
2913 | sec2->the_bfd_section)); | |
2914 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2 */ | |
2915 | } | |
2916 | return; | |
2917 | } | |
c906108c SS |
2918 | error ("No overlay section called %s", args); |
2919 | } | |
2920 | ||
2921 | /* Function: unmap_overlay_command | |
2922 | Mark the overlay section as unmapped | |
2923 | (ie. resident in its LMA address range, rather than the VMA range). */ | |
2924 | ||
2925 | void | |
fba45db2 | 2926 | unmap_overlay_command (char *args, int from_tty) |
c906108c | 2927 | { |
c5aa993b | 2928 | struct objfile *objfile; |
c906108c SS |
2929 | struct obj_section *sec; |
2930 | ||
2931 | if (!overlay_debugging) | |
515ad16c EZ |
2932 | error ("\ |
2933 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ | |
2934 | the 'overlay manual' command."); | |
c906108c SS |
2935 | |
2936 | if (args == 0 || *args == 0) | |
2937 | error ("Argument required: name of an overlay section"); | |
2938 | ||
2939 | /* First, find a section matching the user supplied argument */ | |
2940 | ALL_OBJSECTIONS (objfile, sec) | |
2941 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
2942 | { |
2943 | if (!sec->ovly_mapped) | |
2944 | error ("Section %s is not mapped", args); | |
2945 | sec->ovly_mapped = 0; | |
2946 | return; | |
2947 | } | |
c906108c SS |
2948 | error ("No overlay section called %s", args); |
2949 | } | |
2950 | ||
2951 | /* Function: overlay_auto_command | |
2952 | A utility command to turn on overlay debugging. | |
2953 | Possibly this should be done via a set/show command. */ | |
2954 | ||
2955 | static void | |
fba45db2 | 2956 | overlay_auto_command (char *args, int from_tty) |
c906108c | 2957 | { |
d874f1e2 | 2958 | overlay_debugging = ovly_auto; |
1900040c | 2959 | enable_overlay_breakpoints (); |
c906108c SS |
2960 | if (info_verbose) |
2961 | printf_filtered ("Automatic overlay debugging enabled."); | |
2962 | } | |
2963 | ||
2964 | /* Function: overlay_manual_command | |
2965 | A utility command to turn on overlay debugging. | |
2966 | Possibly this should be done via a set/show command. */ | |
2967 | ||
2968 | static void | |
fba45db2 | 2969 | overlay_manual_command (char *args, int from_tty) |
c906108c | 2970 | { |
d874f1e2 | 2971 | overlay_debugging = ovly_on; |
1900040c | 2972 | disable_overlay_breakpoints (); |
c906108c SS |
2973 | if (info_verbose) |
2974 | printf_filtered ("Overlay debugging enabled."); | |
2975 | } | |
2976 | ||
2977 | /* Function: overlay_off_command | |
2978 | A utility command to turn on overlay debugging. | |
2979 | Possibly this should be done via a set/show command. */ | |
2980 | ||
2981 | static void | |
fba45db2 | 2982 | overlay_off_command (char *args, int from_tty) |
c906108c | 2983 | { |
d874f1e2 | 2984 | overlay_debugging = ovly_off; |
1900040c | 2985 | disable_overlay_breakpoints (); |
c906108c SS |
2986 | if (info_verbose) |
2987 | printf_filtered ("Overlay debugging disabled."); | |
2988 | } | |
2989 | ||
2990 | static void | |
fba45db2 | 2991 | overlay_load_command (char *args, int from_tty) |
c906108c SS |
2992 | { |
2993 | if (target_overlay_update) | |
2994 | (*target_overlay_update) (NULL); | |
2995 | else | |
2996 | error ("This target does not know how to read its overlay state."); | |
2997 | } | |
2998 | ||
2999 | /* Function: overlay_command | |
3000 | A place-holder for a mis-typed command */ | |
3001 | ||
3002 | /* Command list chain containing all defined "overlay" subcommands. */ | |
3003 | struct cmd_list_element *overlaylist; | |
3004 | ||
3005 | static void | |
fba45db2 | 3006 | overlay_command (char *args, int from_tty) |
c906108c | 3007 | { |
c5aa993b | 3008 | printf_unfiltered |
c906108c SS |
3009 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
3010 | help_list (overlaylist, "overlay ", -1, gdb_stdout); | |
3011 | } | |
3012 | ||
3013 | ||
3014 | /* Target Overlays for the "Simplest" overlay manager: | |
3015 | ||
3016 | This is GDB's default target overlay layer. It works with the | |
3017 | minimal overlay manager supplied as an example by Cygnus. The | |
3018 | entry point is via a function pointer "target_overlay_update", | |
3019 | so targets that use a different runtime overlay manager can | |
3020 | substitute their own overlay_update function and take over the | |
3021 | function pointer. | |
3022 | ||
3023 | The overlay_update function pokes around in the target's data structures | |
3024 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3025 | this information. | |
3026 | ||
3027 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3028 | unsigned _novlys; /# number of overlay sections #/ |
3029 | unsigned _ovly_table[_novlys][4] = { | |
3030 | {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/ | |
3031 | {..., ..., ..., ...}, | |
3032 | } | |
3033 | unsigned _novly_regions; /# number of overlay regions #/ | |
3034 | unsigned _ovly_region_table[_novly_regions][3] = { | |
3035 | {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ | |
3036 | {..., ..., ...}, | |
3037 | } | |
c906108c SS |
3038 | These functions will attempt to update GDB's mappedness state in the |
3039 | symbol section table, based on the target's mappedness state. | |
3040 | ||
3041 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3042 | attempt to detect when the cached copy is invalidated. The main | |
3043 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3044 | the cached table and re-reads only the entry for that section from | |
3045 | the target (whenever possible). | |
3046 | */ | |
3047 | ||
3048 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3049 | static unsigned (*cache_ovly_table)[4] = 0; |
c906108c | 3050 | #if 0 |
c5aa993b | 3051 | static unsigned (*cache_ovly_region_table)[3] = 0; |
c906108c | 3052 | #endif |
c5aa993b | 3053 | static unsigned cache_novlys = 0; |
c906108c | 3054 | #if 0 |
c5aa993b | 3055 | static unsigned cache_novly_regions = 0; |
c906108c SS |
3056 | #endif |
3057 | static CORE_ADDR cache_ovly_table_base = 0; | |
3058 | #if 0 | |
3059 | static CORE_ADDR cache_ovly_region_table_base = 0; | |
3060 | #endif | |
c5aa993b JM |
3061 | enum ovly_index |
3062 | { | |
3063 | VMA, SIZE, LMA, MAPPED | |
3064 | }; | |
c906108c SS |
3065 | #define TARGET_LONG_BYTES (TARGET_LONG_BIT / TARGET_CHAR_BIT) |
3066 | ||
3067 | /* Throw away the cached copy of _ovly_table */ | |
3068 | static void | |
fba45db2 | 3069 | simple_free_overlay_table (void) |
c906108c SS |
3070 | { |
3071 | if (cache_ovly_table) | |
b8c9b27d | 3072 | xfree (cache_ovly_table); |
c5aa993b | 3073 | cache_novlys = 0; |
c906108c SS |
3074 | cache_ovly_table = NULL; |
3075 | cache_ovly_table_base = 0; | |
3076 | } | |
3077 | ||
3078 | #if 0 | |
3079 | /* Throw away the cached copy of _ovly_region_table */ | |
3080 | static void | |
fba45db2 | 3081 | simple_free_overlay_region_table (void) |
c906108c SS |
3082 | { |
3083 | if (cache_ovly_region_table) | |
b8c9b27d | 3084 | xfree (cache_ovly_region_table); |
c5aa993b | 3085 | cache_novly_regions = 0; |
c906108c SS |
3086 | cache_ovly_region_table = NULL; |
3087 | cache_ovly_region_table_base = 0; | |
3088 | } | |
3089 | #endif | |
3090 | ||
3091 | /* Read an array of ints from the target into a local buffer. | |
3092 | Convert to host order. int LEN is number of ints */ | |
3093 | static void | |
fba45db2 | 3094 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, int len) |
c906108c | 3095 | { |
34c0bd93 | 3096 | /* FIXME (alloca): Not safe if array is very large. */ |
c906108c | 3097 | char *buf = alloca (len * TARGET_LONG_BYTES); |
c5aa993b | 3098 | int i; |
c906108c SS |
3099 | |
3100 | read_memory (memaddr, buf, len * TARGET_LONG_BYTES); | |
3101 | for (i = 0; i < len; i++) | |
c5aa993b | 3102 | myaddr[i] = extract_unsigned_integer (TARGET_LONG_BYTES * i + buf, |
c906108c SS |
3103 | TARGET_LONG_BYTES); |
3104 | } | |
3105 | ||
3106 | /* Find and grab a copy of the target _ovly_table | |
3107 | (and _novlys, which is needed for the table's size) */ | |
c5aa993b | 3108 | static int |
fba45db2 | 3109 | simple_read_overlay_table (void) |
c906108c | 3110 | { |
0d43edd1 | 3111 | struct minimal_symbol *novlys_msym, *ovly_table_msym; |
c906108c SS |
3112 | |
3113 | simple_free_overlay_table (); | |
9b27852e | 3114 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
0d43edd1 | 3115 | if (! novlys_msym) |
c906108c | 3116 | { |
0d43edd1 JB |
3117 | error ("Error reading inferior's overlay table: " |
3118 | "couldn't find `_novlys' variable\n" | |
3119 | "in inferior. Use `overlay manual' mode."); | |
3120 | return 0; | |
c906108c | 3121 | } |
0d43edd1 | 3122 | |
9b27852e | 3123 | ovly_table_msym = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
0d43edd1 JB |
3124 | if (! ovly_table_msym) |
3125 | { | |
3126 | error ("Error reading inferior's overlay table: couldn't find " | |
3127 | "`_ovly_table' array\n" | |
3128 | "in inferior. Use `overlay manual' mode."); | |
3129 | return 0; | |
3130 | } | |
3131 | ||
3132 | cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (novlys_msym), 4); | |
3133 | cache_ovly_table | |
3134 | = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); | |
3135 | cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (ovly_table_msym); | |
3136 | read_target_long_array (cache_ovly_table_base, | |
3137 | (int *) cache_ovly_table, | |
3138 | cache_novlys * 4); | |
3139 | ||
c5aa993b | 3140 | return 1; /* SUCCESS */ |
c906108c SS |
3141 | } |
3142 | ||
3143 | #if 0 | |
3144 | /* Find and grab a copy of the target _ovly_region_table | |
3145 | (and _novly_regions, which is needed for the table's size) */ | |
c5aa993b | 3146 | static int |
fba45db2 | 3147 | simple_read_overlay_region_table (void) |
c906108c SS |
3148 | { |
3149 | struct minimal_symbol *msym; | |
3150 | ||
3151 | simple_free_overlay_region_table (); | |
9b27852e | 3152 | msym = lookup_minimal_symbol ("_novly_regions", NULL, NULL); |
c906108c SS |
3153 | if (msym != NULL) |
3154 | cache_novly_regions = read_memory_integer (SYMBOL_VALUE_ADDRESS (msym), 4); | |
c5aa993b JM |
3155 | else |
3156 | return 0; /* failure */ | |
c906108c SS |
3157 | cache_ovly_region_table = (void *) xmalloc (cache_novly_regions * 12); |
3158 | if (cache_ovly_region_table != NULL) | |
3159 | { | |
9b27852e | 3160 | msym = lookup_minimal_symbol ("_ovly_region_table", NULL, NULL); |
c906108c SS |
3161 | if (msym != NULL) |
3162 | { | |
3163 | cache_ovly_region_table_base = SYMBOL_VALUE_ADDRESS (msym); | |
c5aa993b JM |
3164 | read_target_long_array (cache_ovly_region_table_base, |
3165 | (int *) cache_ovly_region_table, | |
c906108c SS |
3166 | cache_novly_regions * 3); |
3167 | } | |
c5aa993b JM |
3168 | else |
3169 | return 0; /* failure */ | |
c906108c | 3170 | } |
c5aa993b JM |
3171 | else |
3172 | return 0; /* failure */ | |
3173 | return 1; /* SUCCESS */ | |
c906108c SS |
3174 | } |
3175 | #endif | |
3176 | ||
3177 | /* Function: simple_overlay_update_1 | |
3178 | A helper function for simple_overlay_update. Assuming a cached copy | |
3179 | of _ovly_table exists, look through it to find an entry whose vma, | |
3180 | lma and size match those of OSECT. Re-read the entry and make sure | |
3181 | it still matches OSECT (else the table may no longer be valid). | |
3182 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3183 | success, 0 for failure. */ | |
3184 | ||
3185 | static int | |
fba45db2 | 3186 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c SS |
3187 | { |
3188 | int i, size; | |
fbd35540 MS |
3189 | bfd *obfd = osect->objfile->obfd; |
3190 | asection *bsect = osect->the_bfd_section; | |
c906108c SS |
3191 | |
3192 | size = bfd_get_section_size_before_reloc (osect->the_bfd_section); | |
3193 | for (i = 0; i < cache_novlys; i++) | |
fbd35540 MS |
3194 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3195 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3196 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3197 | { |
3198 | read_target_long_array (cache_ovly_table_base + i * TARGET_LONG_BYTES, | |
3199 | (int *) cache_ovly_table[i], 4); | |
fbd35540 MS |
3200 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3201 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3202 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3203 | { |
3204 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3205 | return 1; | |
3206 | } | |
fbd35540 | 3207 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3208 | return 0; |
3209 | } | |
3210 | return 0; | |
3211 | } | |
3212 | ||
3213 | /* Function: simple_overlay_update | |
3214 | If OSECT is NULL, then update all sections' mapped state | |
3215 | (after re-reading the entire target _ovly_table). | |
3216 | If OSECT is non-NULL, then try to find a matching entry in the | |
3217 | cached ovly_table and update only OSECT's mapped state. | |
3218 | If a cached entry can't be found or the cache isn't valid, then | |
3219 | re-read the entire cache, and go ahead and update all sections. */ | |
3220 | ||
3221 | static void | |
fba45db2 | 3222 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3223 | { |
c5aa993b | 3224 | struct objfile *objfile; |
c906108c SS |
3225 | |
3226 | /* Were we given an osect to look up? NULL means do all of them. */ | |
3227 | if (osect) | |
3228 | /* Have we got a cached copy of the target's overlay table? */ | |
3229 | if (cache_ovly_table != NULL) | |
3230 | /* Does its cached location match what's currently in the symtab? */ | |
c5aa993b | 3231 | if (cache_ovly_table_base == |
9b27852e | 3232 | SYMBOL_VALUE_ADDRESS (lookup_minimal_symbol ("_ovly_table", NULL, NULL))) |
c906108c SS |
3233 | /* Then go ahead and try to look up this single section in the cache */ |
3234 | if (simple_overlay_update_1 (osect)) | |
3235 | /* Found it! We're done. */ | |
3236 | return; | |
3237 | ||
3238 | /* Cached table no good: need to read the entire table anew. | |
3239 | Or else we want all the sections, in which case it's actually | |
3240 | more efficient to read the whole table in one block anyway. */ | |
3241 | ||
0d43edd1 JB |
3242 | if (! simple_read_overlay_table ()) |
3243 | return; | |
3244 | ||
c906108c SS |
3245 | /* Now may as well update all sections, even if only one was requested. */ |
3246 | ALL_OBJSECTIONS (objfile, osect) | |
3247 | if (section_is_overlay (osect->the_bfd_section)) | |
c5aa993b JM |
3248 | { |
3249 | int i, size; | |
fbd35540 MS |
3250 | bfd *obfd = osect->objfile->obfd; |
3251 | asection *bsect = osect->the_bfd_section; | |
c5aa993b JM |
3252 | |
3253 | size = bfd_get_section_size_before_reloc (osect->the_bfd_section); | |
3254 | for (i = 0; i < cache_novlys; i++) | |
fbd35540 MS |
3255 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3256 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3257 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
3258 | { /* obj_section matches i'th entry in ovly_table */ | |
c5aa993b JM |
3259 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; |
3260 | break; /* finished with inner for loop: break out */ | |
3261 | } | |
3262 | } | |
c906108c SS |
3263 | } |
3264 | ||
3265 | ||
3266 | void | |
fba45db2 | 3267 | _initialize_symfile (void) |
c906108c SS |
3268 | { |
3269 | struct cmd_list_element *c; | |
c5aa993b | 3270 | |
c906108c | 3271 | c = add_cmd ("symbol-file", class_files, symbol_file_command, |
c5aa993b | 3272 | "Load symbol table from executable file FILE.\n\ |
c906108c SS |
3273 | The `file' command can also load symbol tables, as well as setting the file\n\ |
3274 | to execute.", &cmdlist); | |
5ba2abeb | 3275 | set_cmd_completer (c, filename_completer); |
c906108c SS |
3276 | |
3277 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, | |
db162d44 | 3278 | "Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR> ...]\n\ |
c906108c | 3279 | Load the symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
2acceee2 | 3280 | ADDR is the starting address of the file's text.\n\ |
db162d44 EZ |
3281 | The optional arguments are section-name section-address pairs and\n\ |
3282 | should be specified if the data and bss segments are not contiguous\n\ | |
d4654627 | 3283 | with the text. SECT is a section name to be loaded at SECT_ADDR.", |
c906108c | 3284 | &cmdlist); |
5ba2abeb | 3285 | set_cmd_completer (c, filename_completer); |
c906108c SS |
3286 | |
3287 | c = add_cmd ("add-shared-symbol-files", class_files, | |
3288 | add_shared_symbol_files_command, | |
3289 | "Load the symbols from shared objects in the dynamic linker's link map.", | |
c5aa993b | 3290 | &cmdlist); |
c906108c SS |
3291 | c = add_alias_cmd ("assf", "add-shared-symbol-files", class_files, 1, |
3292 | &cmdlist); | |
3293 | ||
3294 | c = add_cmd ("load", class_files, load_command, | |
c5aa993b | 3295 | "Dynamically load FILE into the running program, and record its symbols\n\ |
c906108c | 3296 | for access from GDB.", &cmdlist); |
5ba2abeb | 3297 | set_cmd_completer (c, filename_completer); |
c906108c SS |
3298 | |
3299 | add_show_from_set | |
3300 | (add_set_cmd ("symbol-reloading", class_support, var_boolean, | |
c5aa993b JM |
3301 | (char *) &symbol_reloading, |
3302 | "Set dynamic symbol table reloading multiple times in one run.", | |
c906108c SS |
3303 | &setlist), |
3304 | &showlist); | |
3305 | ||
c5aa993b JM |
3306 | add_prefix_cmd ("overlay", class_support, overlay_command, |
3307 | "Commands for debugging overlays.", &overlaylist, | |
c906108c SS |
3308 | "overlay ", 0, &cmdlist); |
3309 | ||
3310 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3311 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3312 | ||
c5aa993b | 3313 | add_cmd ("map-overlay", class_support, map_overlay_command, |
c906108c SS |
3314 | "Assert that an overlay section is mapped.", &overlaylist); |
3315 | ||
c5aa993b | 3316 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
c906108c SS |
3317 | "Assert that an overlay section is unmapped.", &overlaylist); |
3318 | ||
c5aa993b | 3319 | add_cmd ("list-overlays", class_support, list_overlays_command, |
c906108c SS |
3320 | "List mappings of overlay sections.", &overlaylist); |
3321 | ||
c5aa993b | 3322 | add_cmd ("manual", class_support, overlay_manual_command, |
c906108c | 3323 | "Enable overlay debugging.", &overlaylist); |
c5aa993b | 3324 | add_cmd ("off", class_support, overlay_off_command, |
c906108c | 3325 | "Disable overlay debugging.", &overlaylist); |
c5aa993b | 3326 | add_cmd ("auto", class_support, overlay_auto_command, |
c906108c | 3327 | "Enable automatic overlay debugging.", &overlaylist); |
c5aa993b | 3328 | add_cmd ("load-target", class_support, overlay_load_command, |
c906108c SS |
3329 | "Read the overlay mapping state from the target.", &overlaylist); |
3330 | ||
3331 | /* Filename extension to source language lookup table: */ | |
3332 | init_filename_language_table (); | |
3333 | c = add_set_cmd ("extension-language", class_files, var_string_noescape, | |
c5aa993b | 3334 | (char *) &ext_args, |
c906108c SS |
3335 | "Set mapping between filename extension and source language.\n\ |
3336 | Usage: set extension-language .foo bar", | |
c5aa993b | 3337 | &setlist); |
9f60d481 | 3338 | set_cmd_cfunc (c, set_ext_lang_command); |
c906108c | 3339 | |
c5aa993b | 3340 | add_info ("extensions", info_ext_lang_command, |
c906108c | 3341 | "All filename extensions associated with a source language."); |
917317f4 JM |
3342 | |
3343 | add_show_from_set | |
3344 | (add_set_cmd ("download-write-size", class_obscure, | |
3345 | var_integer, (char *) &download_write_size, | |
3346 | "Set the write size used when downloading a program.\n" | |
3347 | "Only used when downloading a program onto a remote\n" | |
3348 | "target. Specify zero, or a negative value, to disable\n" | |
3349 | "blocked writes. The actual size of each transfer is also\n" | |
3350 | "limited by the size of the target packet and the memory\n" | |
3351 | "cache.\n", | |
3352 | &setlist), | |
3353 | &showlist); | |
c906108c | 3354 | } |