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" | |
0378c332 | 34 | #include "source.h" |
c906108c SS |
35 | #include "gdbcmd.h" |
36 | #include "breakpoint.h" | |
37 | #include "language.h" | |
38 | #include "complaints.h" | |
39 | #include "demangle.h" | |
c5aa993b | 40 | #include "inferior.h" /* for write_pc */ |
c906108c | 41 | #include "gdb-stabs.h" |
04ea0df1 | 42 | #include "gdb_obstack.h" |
d75b5104 | 43 | #include "completer.h" |
af5f3db6 | 44 | #include "bcache.h" |
c906108c | 45 | |
c906108c SS |
46 | #include <sys/types.h> |
47 | #include <fcntl.h> | |
48 | #include "gdb_string.h" | |
49 | #include "gdb_stat.h" | |
50 | #include <ctype.h> | |
51 | #include <time.h> | |
c906108c SS |
52 | |
53 | #ifndef O_BINARY | |
54 | #define O_BINARY 0 | |
55 | #endif | |
56 | ||
57 | #ifdef HPUXHPPA | |
58 | ||
59 | /* Some HP-UX related globals to clear when a new "main" | |
60 | symbol file is loaded. HP-specific. */ | |
61 | ||
62 | extern int hp_som_som_object_present; | |
63 | extern int hp_cxx_exception_support_initialized; | |
64 | #define RESET_HP_UX_GLOBALS() do {\ | |
65 | hp_som_som_object_present = 0; /* indicates HP-compiled code */ \ | |
66 | hp_cxx_exception_support_initialized = 0; /* must reinitialize exception stuff */ \ | |
67 | } while (0) | |
68 | #endif | |
69 | ||
917317f4 | 70 | int (*ui_load_progress_hook) (const char *section, unsigned long num); |
c2d11a7d JM |
71 | void (*show_load_progress) (const char *section, |
72 | unsigned long section_sent, | |
73 | unsigned long section_size, | |
74 | unsigned long total_sent, | |
75 | unsigned long total_size); | |
507f3c78 KB |
76 | void (*pre_add_symbol_hook) (char *); |
77 | void (*post_add_symbol_hook) (void); | |
78 | void (*target_new_objfile_hook) (struct objfile *); | |
c906108c | 79 | |
74b7792f AC |
80 | static void clear_symtab_users_cleanup (void *ignore); |
81 | ||
c906108c | 82 | /* Global variables owned by this file */ |
c5aa993b | 83 | int readnow_symbol_files; /* Read full symbols immediately */ |
c906108c | 84 | |
c906108c SS |
85 | /* External variables and functions referenced. */ |
86 | ||
a14ed312 | 87 | extern void report_transfer_performance (unsigned long, time_t, time_t); |
c906108c SS |
88 | |
89 | /* Functions this file defines */ | |
90 | ||
91 | #if 0 | |
a14ed312 KB |
92 | static int simple_read_overlay_region_table (void); |
93 | static void simple_free_overlay_region_table (void); | |
c906108c SS |
94 | #endif |
95 | ||
a14ed312 | 96 | static void set_initial_language (void); |
c906108c | 97 | |
a14ed312 | 98 | static void load_command (char *, int); |
c906108c | 99 | |
d7db6da9 FN |
100 | static void symbol_file_add_main_1 (char *args, int from_tty, int flags); |
101 | ||
a14ed312 | 102 | static void add_symbol_file_command (char *, int); |
c906108c | 103 | |
a14ed312 | 104 | static void add_shared_symbol_files_command (char *, int); |
c906108c | 105 | |
a14ed312 | 106 | static void cashier_psymtab (struct partial_symtab *); |
c906108c | 107 | |
a14ed312 | 108 | bfd *symfile_bfd_open (char *); |
c906108c | 109 | |
0e931cf0 JB |
110 | int get_section_index (struct objfile *, char *); |
111 | ||
a14ed312 | 112 | static void find_sym_fns (struct objfile *); |
c906108c | 113 | |
a14ed312 | 114 | static void decrement_reading_symtab (void *); |
c906108c | 115 | |
a14ed312 | 116 | static void overlay_invalidate_all (void); |
c906108c | 117 | |
a14ed312 | 118 | static int overlay_is_mapped (struct obj_section *); |
c906108c | 119 | |
a14ed312 | 120 | void list_overlays_command (char *, int); |
c906108c | 121 | |
a14ed312 | 122 | void map_overlay_command (char *, int); |
c906108c | 123 | |
a14ed312 | 124 | void unmap_overlay_command (char *, int); |
c906108c | 125 | |
a14ed312 | 126 | static void overlay_auto_command (char *, int); |
c906108c | 127 | |
a14ed312 | 128 | static void overlay_manual_command (char *, int); |
c906108c | 129 | |
a14ed312 | 130 | static void overlay_off_command (char *, int); |
c906108c | 131 | |
a14ed312 | 132 | static void overlay_load_command (char *, int); |
c906108c | 133 | |
a14ed312 | 134 | static void overlay_command (char *, int); |
c906108c | 135 | |
a14ed312 | 136 | static void simple_free_overlay_table (void); |
c906108c | 137 | |
a14ed312 | 138 | static void read_target_long_array (CORE_ADDR, unsigned int *, int); |
c906108c | 139 | |
a14ed312 | 140 | static int simple_read_overlay_table (void); |
c906108c | 141 | |
a14ed312 | 142 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 143 | |
a14ed312 | 144 | static void add_filename_language (char *ext, enum language lang); |
392a587b | 145 | |
a14ed312 | 146 | static void set_ext_lang_command (char *args, int from_tty); |
392a587b | 147 | |
a14ed312 | 148 | static void info_ext_lang_command (char *args, int from_tty); |
392a587b | 149 | |
a14ed312 | 150 | static void init_filename_language_table (void); |
392a587b | 151 | |
a14ed312 | 152 | void _initialize_symfile (void); |
c906108c SS |
153 | |
154 | /* List of all available sym_fns. On gdb startup, each object file reader | |
155 | calls add_symtab_fns() to register information on each format it is | |
156 | prepared to read. */ | |
157 | ||
158 | static struct sym_fns *symtab_fns = NULL; | |
159 | ||
160 | /* Flag for whether user will be reloading symbols multiple times. | |
161 | Defaults to ON for VxWorks, otherwise OFF. */ | |
162 | ||
163 | #ifdef SYMBOL_RELOADING_DEFAULT | |
164 | int symbol_reloading = SYMBOL_RELOADING_DEFAULT; | |
165 | #else | |
166 | int symbol_reloading = 0; | |
167 | #endif | |
168 | ||
b7209cb4 FF |
169 | /* If non-zero, shared library symbols will be added automatically |
170 | when the inferior is created, new libraries are loaded, or when | |
171 | attaching to the inferior. This is almost always what users will | |
172 | want to have happen; but for very large programs, the startup time | |
173 | will be excessive, and so if this is a problem, the user can clear | |
174 | this flag and then add the shared library symbols as needed. Note | |
175 | that there is a potential for confusion, since if the shared | |
c906108c | 176 | library symbols are not loaded, commands like "info fun" will *not* |
b7209cb4 | 177 | report all the functions that are actually present. */ |
c906108c SS |
178 | |
179 | int auto_solib_add = 1; | |
b7209cb4 FF |
180 | |
181 | /* For systems that support it, a threshold size in megabytes. If | |
182 | automatically adding a new library's symbol table to those already | |
183 | known to the debugger would cause the total shared library symbol | |
184 | size to exceed this threshhold, then the shlib's symbols are not | |
185 | added. The threshold is ignored if the user explicitly asks for a | |
186 | shlib to be added, such as when using the "sharedlibrary" | |
187 | command. */ | |
188 | ||
189 | int auto_solib_limit; | |
c906108c | 190 | \f |
c5aa993b | 191 | |
c906108c SS |
192 | /* Since this function is called from within qsort, in an ANSI environment |
193 | it must conform to the prototype for qsort, which specifies that the | |
194 | comparison function takes two "void *" pointers. */ | |
195 | ||
196 | static int | |
0cd64fe2 | 197 | compare_symbols (const void *s1p, const void *s2p) |
c906108c SS |
198 | { |
199 | register struct symbol **s1, **s2; | |
200 | ||
201 | s1 = (struct symbol **) s1p; | |
202 | s2 = (struct symbol **) s2p; | |
494b7ec9 | 203 | return (strcmp (SYMBOL_SOURCE_NAME (*s1), SYMBOL_SOURCE_NAME (*s2))); |
c906108c SS |
204 | } |
205 | ||
206 | /* | |
207 | ||
c5aa993b | 208 | LOCAL FUNCTION |
c906108c | 209 | |
c5aa993b | 210 | compare_psymbols -- compare two partial symbols by name |
c906108c | 211 | |
c5aa993b | 212 | DESCRIPTION |
c906108c | 213 | |
c5aa993b JM |
214 | Given pointers to pointers to two partial symbol table entries, |
215 | compare them by name and return -N, 0, or +N (ala strcmp). | |
216 | Typically used by sorting routines like qsort(). | |
c906108c | 217 | |
c5aa993b | 218 | NOTES |
c906108c | 219 | |
c5aa993b JM |
220 | Does direct compare of first two characters before punting |
221 | and passing to strcmp for longer compares. Note that the | |
222 | original version had a bug whereby two null strings or two | |
223 | identically named one character strings would return the | |
224 | comparison of memory following the null byte. | |
c906108c SS |
225 | |
226 | */ | |
227 | ||
228 | static int | |
0cd64fe2 | 229 | compare_psymbols (const void *s1p, const void *s2p) |
c906108c | 230 | { |
fba7f19c EZ |
231 | register struct partial_symbol **s1, **s2; |
232 | register char *st1, *st2; | |
233 | ||
234 | s1 = (struct partial_symbol **) s1p; | |
235 | s2 = (struct partial_symbol **) s2p; | |
236 | st1 = SYMBOL_SOURCE_NAME (*s1); | |
237 | st2 = SYMBOL_SOURCE_NAME (*s2); | |
238 | ||
c906108c SS |
239 | |
240 | if ((st1[0] - st2[0]) || !st1[0]) | |
241 | { | |
242 | return (st1[0] - st2[0]); | |
243 | } | |
244 | else if ((st1[1] - st2[1]) || !st1[1]) | |
245 | { | |
246 | return (st1[1] - st2[1]); | |
247 | } | |
248 | else | |
249 | { | |
c5aa993b | 250 | return (strcmp (st1, st2)); |
c906108c SS |
251 | } |
252 | } | |
253 | ||
254 | void | |
fba45db2 | 255 | sort_pst_symbols (struct partial_symtab *pst) |
c906108c SS |
256 | { |
257 | /* Sort the global list; don't sort the static list */ | |
258 | ||
c5aa993b JM |
259 | qsort (pst->objfile->global_psymbols.list + pst->globals_offset, |
260 | pst->n_global_syms, sizeof (struct partial_symbol *), | |
c906108c SS |
261 | compare_psymbols); |
262 | } | |
263 | ||
264 | /* Call sort_block_syms to sort alphabetically the symbols of one block. */ | |
265 | ||
266 | void | |
fba45db2 | 267 | sort_block_syms (register struct block *b) |
c906108c SS |
268 | { |
269 | qsort (&BLOCK_SYM (b, 0), BLOCK_NSYMS (b), | |
270 | sizeof (struct symbol *), compare_symbols); | |
271 | } | |
272 | ||
273 | /* Call sort_symtab_syms to sort alphabetically | |
274 | the symbols of each block of one symtab. */ | |
275 | ||
276 | void | |
fba45db2 | 277 | sort_symtab_syms (register struct symtab *s) |
c906108c SS |
278 | { |
279 | register struct blockvector *bv; | |
280 | int nbl; | |
281 | int i; | |
282 | register struct block *b; | |
283 | ||
284 | if (s == 0) | |
285 | return; | |
286 | bv = BLOCKVECTOR (s); | |
287 | nbl = BLOCKVECTOR_NBLOCKS (bv); | |
288 | for (i = 0; i < nbl; i++) | |
289 | { | |
290 | b = BLOCKVECTOR_BLOCK (bv, i); | |
291 | if (BLOCK_SHOULD_SORT (b)) | |
292 | sort_block_syms (b); | |
293 | } | |
294 | } | |
295 | ||
296 | /* Make a null terminated copy of the string at PTR with SIZE characters in | |
297 | the obstack pointed to by OBSTACKP . Returns the address of the copy. | |
298 | Note that the string at PTR does not have to be null terminated, I.E. it | |
299 | may be part of a larger string and we are only saving a substring. */ | |
300 | ||
301 | char * | |
63ca651f | 302 | obsavestring (const char *ptr, int size, struct obstack *obstackp) |
c906108c SS |
303 | { |
304 | register char *p = (char *) obstack_alloc (obstackp, size + 1); | |
305 | /* Open-coded memcpy--saves function call time. These strings are usually | |
306 | short. FIXME: Is this really still true with a compiler that can | |
307 | inline memcpy? */ | |
308 | { | |
63ca651f | 309 | register const char *p1 = ptr; |
c906108c | 310 | register char *p2 = p; |
63ca651f | 311 | const char *end = ptr + size; |
c906108c SS |
312 | while (p1 != end) |
313 | *p2++ = *p1++; | |
314 | } | |
315 | p[size] = 0; | |
316 | return p; | |
317 | } | |
318 | ||
319 | /* Concatenate strings S1, S2 and S3; return the new string. Space is found | |
320 | in the obstack pointed to by OBSTACKP. */ | |
321 | ||
322 | char * | |
fba45db2 KB |
323 | obconcat (struct obstack *obstackp, const char *s1, const char *s2, |
324 | const char *s3) | |
c906108c SS |
325 | { |
326 | register int len = strlen (s1) + strlen (s2) + strlen (s3) + 1; | |
327 | register char *val = (char *) obstack_alloc (obstackp, len); | |
328 | strcpy (val, s1); | |
329 | strcat (val, s2); | |
330 | strcat (val, s3); | |
331 | return val; | |
332 | } | |
333 | ||
334 | /* True if we are nested inside psymtab_to_symtab. */ | |
335 | ||
336 | int currently_reading_symtab = 0; | |
337 | ||
338 | static void | |
fba45db2 | 339 | decrement_reading_symtab (void *dummy) |
c906108c SS |
340 | { |
341 | currently_reading_symtab--; | |
342 | } | |
343 | ||
344 | /* Get the symbol table that corresponds to a partial_symtab. | |
345 | This is fast after the first time you do it. In fact, there | |
346 | is an even faster macro PSYMTAB_TO_SYMTAB that does the fast | |
347 | case inline. */ | |
348 | ||
349 | struct symtab * | |
fba45db2 | 350 | psymtab_to_symtab (register struct partial_symtab *pst) |
c906108c SS |
351 | { |
352 | /* If it's been looked up before, return it. */ | |
353 | if (pst->symtab) | |
354 | return pst->symtab; | |
355 | ||
356 | /* If it has not yet been read in, read it. */ | |
357 | if (!pst->readin) | |
c5aa993b | 358 | { |
c906108c SS |
359 | struct cleanup *back_to = make_cleanup (decrement_reading_symtab, NULL); |
360 | currently_reading_symtab++; | |
361 | (*pst->read_symtab) (pst); | |
362 | do_cleanups (back_to); | |
363 | } | |
364 | ||
365 | return pst->symtab; | |
366 | } | |
367 | ||
368 | /* Initialize entry point information for this objfile. */ | |
369 | ||
370 | void | |
fba45db2 | 371 | init_entry_point_info (struct objfile *objfile) |
c906108c SS |
372 | { |
373 | /* Save startup file's range of PC addresses to help blockframe.c | |
374 | decide where the bottom of the stack is. */ | |
375 | ||
c5aa993b | 376 | if (bfd_get_file_flags (objfile->obfd) & EXEC_P) |
c906108c SS |
377 | { |
378 | /* Executable file -- record its entry point so we'll recognize | |
c5aa993b JM |
379 | the startup file because it contains the entry point. */ |
380 | objfile->ei.entry_point = bfd_get_start_address (objfile->obfd); | |
c906108c SS |
381 | } |
382 | else | |
383 | { | |
384 | /* Examination of non-executable.o files. Short-circuit this stuff. */ | |
c5aa993b | 385 | objfile->ei.entry_point = INVALID_ENTRY_POINT; |
c906108c | 386 | } |
c5aa993b JM |
387 | objfile->ei.entry_file_lowpc = INVALID_ENTRY_LOWPC; |
388 | objfile->ei.entry_file_highpc = INVALID_ENTRY_HIGHPC; | |
389 | objfile->ei.entry_func_lowpc = INVALID_ENTRY_LOWPC; | |
390 | objfile->ei.entry_func_highpc = INVALID_ENTRY_HIGHPC; | |
391 | objfile->ei.main_func_lowpc = INVALID_ENTRY_LOWPC; | |
392 | objfile->ei.main_func_highpc = INVALID_ENTRY_HIGHPC; | |
c906108c SS |
393 | } |
394 | ||
395 | /* Get current entry point address. */ | |
396 | ||
397 | CORE_ADDR | |
fba45db2 | 398 | entry_point_address (void) |
c906108c SS |
399 | { |
400 | return symfile_objfile ? symfile_objfile->ei.entry_point : 0; | |
401 | } | |
402 | ||
403 | /* Remember the lowest-addressed loadable section we've seen. | |
404 | This function is called via bfd_map_over_sections. | |
405 | ||
406 | In case of equal vmas, the section with the largest size becomes the | |
407 | lowest-addressed loadable section. | |
408 | ||
409 | If the vmas and sizes are equal, the last section is considered the | |
410 | lowest-addressed loadable section. */ | |
411 | ||
412 | void | |
fba45db2 | 413 | find_lowest_section (bfd *abfd, asection *sect, PTR obj) |
c906108c | 414 | { |
c5aa993b | 415 | asection **lowest = (asection **) obj; |
c906108c SS |
416 | |
417 | if (0 == (bfd_get_section_flags (abfd, sect) & SEC_LOAD)) | |
418 | return; | |
419 | if (!*lowest) | |
420 | *lowest = sect; /* First loadable section */ | |
421 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
422 | *lowest = sect; /* A lower loadable section */ | |
423 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
424 | && (bfd_section_size (abfd, (*lowest)) | |
425 | <= bfd_section_size (abfd, sect))) | |
426 | *lowest = sect; | |
427 | } | |
428 | ||
62557bbc KB |
429 | |
430 | /* Build (allocate and populate) a section_addr_info struct from | |
431 | an existing section table. */ | |
432 | ||
433 | extern struct section_addr_info * | |
434 | build_section_addr_info_from_section_table (const struct section_table *start, | |
435 | const struct section_table *end) | |
436 | { | |
437 | struct section_addr_info *sap; | |
438 | const struct section_table *stp; | |
439 | int oidx; | |
440 | ||
441 | sap = xmalloc (sizeof (struct section_addr_info)); | |
442 | memset (sap, 0, sizeof (struct section_addr_info)); | |
443 | ||
444 | for (stp = start, oidx = 0; stp != end; stp++) | |
445 | { | |
fbd35540 MS |
446 | if (bfd_get_section_flags (stp->bfd, |
447 | stp->the_bfd_section) & (SEC_ALLOC | SEC_LOAD) | |
62557bbc KB |
448 | && oidx < MAX_SECTIONS) |
449 | { | |
450 | sap->other[oidx].addr = stp->addr; | |
fbd35540 MS |
451 | sap->other[oidx].name |
452 | = xstrdup (bfd_section_name (stp->bfd, stp->the_bfd_section)); | |
62557bbc KB |
453 | sap->other[oidx].sectindex = stp->the_bfd_section->index; |
454 | oidx++; | |
455 | } | |
456 | } | |
457 | ||
458 | return sap; | |
459 | } | |
460 | ||
461 | ||
462 | /* Free all memory allocated by build_section_addr_info_from_section_table. */ | |
463 | ||
464 | extern void | |
465 | free_section_addr_info (struct section_addr_info *sap) | |
466 | { | |
467 | int idx; | |
468 | ||
469 | for (idx = 0; idx < MAX_SECTIONS; idx++) | |
470 | if (sap->other[idx].name) | |
b8c9b27d KB |
471 | xfree (sap->other[idx].name); |
472 | xfree (sap); | |
62557bbc KB |
473 | } |
474 | ||
475 | ||
e8289572 JB |
476 | /* Initialize OBJFILE's sect_index_* members. */ |
477 | static void | |
478 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 479 | { |
e8289572 | 480 | asection *sect; |
c906108c | 481 | int i; |
e8289572 | 482 | |
b8fbeb18 EZ |
483 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
484 | if (sect) | |
485 | objfile->sect_index_text = sect->index; | |
486 | ||
487 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
488 | if (sect) | |
489 | objfile->sect_index_data = sect->index; | |
490 | ||
491 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
492 | if (sect) | |
493 | objfile->sect_index_bss = sect->index; | |
494 | ||
495 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
496 | if (sect) | |
497 | objfile->sect_index_rodata = sect->index; | |
498 | ||
bbcd32ad FF |
499 | /* This is where things get really weird... We MUST have valid |
500 | indices for the various sect_index_* members or gdb will abort. | |
501 | So if for example, there is no ".text" section, we have to | |
502 | accomodate that. Except when explicitly adding symbol files at | |
503 | some address, section_offsets contains nothing but zeros, so it | |
504 | doesn't matter which slot in section_offsets the individual | |
505 | sect_index_* members index into. So if they are all zero, it is | |
506 | safe to just point all the currently uninitialized indices to the | |
507 | first slot. */ | |
508 | ||
509 | for (i = 0; i < objfile->num_sections; i++) | |
510 | { | |
511 | if (ANOFFSET (objfile->section_offsets, i) != 0) | |
512 | { | |
513 | break; | |
514 | } | |
515 | } | |
516 | if (i == objfile->num_sections) | |
517 | { | |
518 | if (objfile->sect_index_text == -1) | |
519 | objfile->sect_index_text = 0; | |
520 | if (objfile->sect_index_data == -1) | |
521 | objfile->sect_index_data = 0; | |
522 | if (objfile->sect_index_bss == -1) | |
523 | objfile->sect_index_bss = 0; | |
524 | if (objfile->sect_index_rodata == -1) | |
525 | objfile->sect_index_rodata = 0; | |
526 | } | |
b8fbeb18 | 527 | } |
c906108c | 528 | |
e8289572 JB |
529 | |
530 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
531 | of how to represent it for fast symbol reading. This is the default | |
532 | version of the sym_fns.sym_offsets function for symbol readers that | |
533 | don't need to do anything special. It allocates a section_offsets table | |
534 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
535 | ||
536 | void | |
537 | default_symfile_offsets (struct objfile *objfile, | |
538 | struct section_addr_info *addrs) | |
539 | { | |
540 | int i; | |
541 | ||
542 | objfile->num_sections = SECT_OFF_MAX; | |
543 | objfile->section_offsets = (struct section_offsets *) | |
544 | obstack_alloc (&objfile->psymbol_obstack, SIZEOF_SECTION_OFFSETS); | |
545 | memset (objfile->section_offsets, 0, SIZEOF_SECTION_OFFSETS); | |
546 | ||
547 | /* Now calculate offsets for section that were specified by the | |
548 | caller. */ | |
549 | for (i = 0; i < MAX_SECTIONS && addrs->other[i].name; i++) | |
550 | { | |
551 | struct other_sections *osp ; | |
552 | ||
553 | osp = &addrs->other[i] ; | |
554 | if (osp->addr == 0) | |
555 | continue; | |
556 | ||
557 | /* Record all sections in offsets */ | |
558 | /* The section_offsets in the objfile are here filled in using | |
559 | the BFD index. */ | |
560 | (objfile->section_offsets)->offsets[osp->sectindex] = osp->addr; | |
561 | } | |
562 | ||
563 | /* Remember the bfd indexes for the .text, .data, .bss and | |
564 | .rodata sections. */ | |
565 | init_objfile_sect_indices (objfile); | |
566 | } | |
567 | ||
568 | ||
c906108c SS |
569 | /* Process a symbol file, as either the main file or as a dynamically |
570 | loaded file. | |
571 | ||
96baa820 JM |
572 | OBJFILE is where the symbols are to be read from. |
573 | ||
574 | ADDR is the address where the text segment was loaded, unless the | |
575 | objfile is the main symbol file, in which case it is zero. | |
576 | ||
577 | MAINLINE is nonzero if this is the main symbol file, or zero if | |
578 | it's an extra symbol file such as dynamically loaded code. | |
579 | ||
580 | VERBO is nonzero if the caller has printed a verbose message about | |
581 | the symbol reading (and complaints can be more terse about it). */ | |
c906108c SS |
582 | |
583 | void | |
fba45db2 KB |
584 | syms_from_objfile (struct objfile *objfile, struct section_addr_info *addrs, |
585 | int mainline, int verbo) | |
c906108c | 586 | { |
2acceee2 JM |
587 | asection *lower_sect; |
588 | asection *sect; | |
589 | CORE_ADDR lower_offset; | |
590 | struct section_addr_info local_addr; | |
c906108c | 591 | struct cleanup *old_chain; |
2acceee2 JM |
592 | int i; |
593 | ||
594 | /* If ADDRS is NULL, initialize the local section_addr_info struct and | |
595 | point ADDRS to it. We now establish the convention that an addr of | |
596 | zero means no load address was specified. */ | |
597 | ||
598 | if (addrs == NULL) | |
599 | { | |
600 | memset (&local_addr, 0, sizeof (local_addr)); | |
601 | addrs = &local_addr; | |
602 | } | |
c906108c SS |
603 | |
604 | init_entry_point_info (objfile); | |
605 | find_sym_fns (objfile); | |
606 | ||
75245b24 MS |
607 | if (objfile->sf == NULL) |
608 | return; /* No symbols. */ | |
609 | ||
c906108c SS |
610 | /* Make sure that partially constructed symbol tables will be cleaned up |
611 | if an error occurs during symbol reading. */ | |
74b7792f | 612 | old_chain = make_cleanup_free_objfile (objfile); |
c906108c | 613 | |
c5aa993b | 614 | if (mainline) |
c906108c SS |
615 | { |
616 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 617 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 618 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
619 | |
620 | /* Since no error yet, throw away the old symbol table. */ | |
621 | ||
622 | if (symfile_objfile != NULL) | |
623 | { | |
624 | free_objfile (symfile_objfile); | |
625 | symfile_objfile = NULL; | |
626 | } | |
627 | ||
628 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
629 | If the user wants to get rid of them, they should do "symbol-file" |
630 | without arguments first. Not sure this is the best behavior | |
631 | (PR 2207). */ | |
c906108c | 632 | |
c5aa993b | 633 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
634 | } |
635 | ||
636 | /* Convert addr into an offset rather than an absolute address. | |
637 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 638 | and assume that <addr> is where that got loaded. |
c906108c | 639 | |
53a5351d JM |
640 | We no longer warn if the lowest section is not a text segment (as |
641 | happens for the PA64 port. */ | |
e7cf9df1 | 642 | if (!mainline) |
c906108c | 643 | { |
2acceee2 JM |
644 | /* Find lowest loadable section to be used as starting point for |
645 | continguous sections. FIXME!! won't work without call to find | |
646 | .text first, but this assumes text is lowest section. */ | |
647 | lower_sect = bfd_get_section_by_name (objfile->obfd, ".text"); | |
648 | if (lower_sect == NULL) | |
c906108c | 649 | bfd_map_over_sections (objfile->obfd, find_lowest_section, |
2acceee2 JM |
650 | (PTR) &lower_sect); |
651 | if (lower_sect == NULL) | |
c906108c SS |
652 | warning ("no loadable sections found in added symbol-file %s", |
653 | objfile->name); | |
b8fbeb18 EZ |
654 | else |
655 | if ((bfd_get_section_flags (objfile->obfd, lower_sect) & SEC_CODE) == 0) | |
656 | warning ("Lowest section in %s is %s at %s", | |
657 | objfile->name, | |
658 | bfd_section_name (objfile->obfd, lower_sect), | |
659 | paddr (bfd_section_vma (objfile->obfd, lower_sect))); | |
2acceee2 JM |
660 | if (lower_sect != NULL) |
661 | lower_offset = bfd_section_vma (objfile->obfd, lower_sect); | |
662 | else | |
663 | lower_offset = 0; | |
664 | ||
13de58df | 665 | /* Calculate offsets for the loadable sections. |
2acceee2 JM |
666 | FIXME! Sections must be in order of increasing loadable section |
667 | so that contiguous sections can use the lower-offset!!! | |
668 | ||
13de58df JB |
669 | Adjust offsets if the segments are not contiguous. |
670 | If the section is contiguous, its offset should be set to | |
2acceee2 JM |
671 | the offset of the highest loadable section lower than it |
672 | (the loadable section directly below it in memory). | |
673 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
674 | ||
13de58df | 675 | /* Calculate offsets for sections. */ |
2acceee2 JM |
676 | for (i=0 ; i < MAX_SECTIONS && addrs->other[i].name; i++) |
677 | { | |
e7cf9df1 | 678 | if (addrs->other[i].addr != 0) |
2acceee2 | 679 | { |
13de58df JB |
680 | sect = bfd_get_section_by_name (objfile->obfd, |
681 | addrs->other[i].name); | |
2acceee2 JM |
682 | if (sect) |
683 | { | |
13de58df JB |
684 | addrs->other[i].addr |
685 | -= bfd_section_vma (objfile->obfd, sect); | |
2acceee2 | 686 | lower_offset = addrs->other[i].addr; |
e7cf9df1 | 687 | /* This is the index used by BFD. */ |
2acceee2 JM |
688 | addrs->other[i].sectindex = sect->index ; |
689 | } | |
690 | else | |
691 | { | |
692 | warning ("section %s not found in %s", addrs->other[i].name, | |
693 | objfile->name); | |
694 | addrs->other[i].addr = 0; | |
695 | } | |
696 | } | |
697 | else | |
698 | addrs->other[i].addr = lower_offset; | |
699 | } | |
c906108c SS |
700 | } |
701 | ||
702 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
703 | appear for this new file, and record how verbose to be, then do the | |
704 | initial symbol reading for this file. */ | |
705 | ||
c5aa993b | 706 | (*objfile->sf->sym_init) (objfile); |
b9caf505 | 707 | clear_complaints (&symfile_complaints, 1, verbo); |
c906108c | 708 | |
2acceee2 | 709 | (*objfile->sf->sym_offsets) (objfile, addrs); |
c906108c SS |
710 | |
711 | #ifndef IBM6000_TARGET | |
712 | /* This is a SVR4/SunOS specific hack, I think. In any event, it | |
713 | screws RS/6000. sym_offsets should be doing this sort of thing, | |
714 | because it knows the mapping between bfd sections and | |
715 | section_offsets. */ | |
716 | /* This is a hack. As far as I can tell, section offsets are not | |
717 | target dependent. They are all set to addr with a couple of | |
718 | exceptions. The exceptions are sysvr4 shared libraries, whose | |
719 | offsets are kept in solib structures anyway and rs6000 xcoff | |
720 | which handles shared libraries in a completely unique way. | |
721 | ||
722 | Section offsets are built similarly, except that they are built | |
723 | by adding addr in all cases because there is no clear mapping | |
724 | from section_offsets into actual sections. Note that solib.c | |
96baa820 | 725 | has a different algorithm for finding section offsets. |
c906108c SS |
726 | |
727 | These should probably all be collapsed into some target | |
728 | independent form of shared library support. FIXME. */ | |
729 | ||
2acceee2 | 730 | if (addrs) |
c906108c SS |
731 | { |
732 | struct obj_section *s; | |
733 | ||
2acceee2 JM |
734 | /* Map section offsets in "addr" back to the object's |
735 | sections by comparing the section names with bfd's | |
736 | section names. Then adjust the section address by | |
737 | the offset. */ /* for gdb/13815 */ | |
738 | ||
96baa820 | 739 | ALL_OBJFILE_OSECTIONS (objfile, s) |
c906108c | 740 | { |
2acceee2 JM |
741 | CORE_ADDR s_addr = 0; |
742 | int i; | |
743 | ||
62557bbc KB |
744 | for (i = 0; |
745 | !s_addr && i < MAX_SECTIONS && addrs->other[i].name; | |
746 | i++) | |
fbd35540 MS |
747 | if (strcmp (bfd_section_name (s->objfile->obfd, |
748 | s->the_bfd_section), | |
749 | addrs->other[i].name) == 0) | |
2acceee2 JM |
750 | s_addr = addrs->other[i].addr; /* end added for gdb/13815 */ |
751 | ||
c906108c | 752 | s->addr -= s->offset; |
2acceee2 | 753 | s->addr += s_addr; |
c906108c | 754 | s->endaddr -= s->offset; |
2acceee2 JM |
755 | s->endaddr += s_addr; |
756 | s->offset += s_addr; | |
c906108c SS |
757 | } |
758 | } | |
759 | #endif /* not IBM6000_TARGET */ | |
760 | ||
96baa820 | 761 | (*objfile->sf->sym_read) (objfile, mainline); |
c906108c SS |
762 | |
763 | if (!have_partial_symbols () && !have_full_symbols ()) | |
764 | { | |
765 | wrap_here (""); | |
766 | printf_filtered ("(no debugging symbols found)..."); | |
767 | wrap_here (""); | |
768 | } | |
769 | ||
770 | /* Don't allow char * to have a typename (else would get caddr_t). | |
771 | Ditto void *. FIXME: Check whether this is now done by all the | |
772 | symbol readers themselves (many of them now do), and if so remove | |
773 | it from here. */ | |
774 | ||
775 | TYPE_NAME (lookup_pointer_type (builtin_type_char)) = 0; | |
776 | TYPE_NAME (lookup_pointer_type (builtin_type_void)) = 0; | |
777 | ||
778 | /* Mark the objfile has having had initial symbol read attempted. Note | |
779 | that this does not mean we found any symbols... */ | |
780 | ||
c5aa993b | 781 | objfile->flags |= OBJF_SYMS; |
c906108c SS |
782 | |
783 | /* Discard cleanups as symbol reading was successful. */ | |
784 | ||
785 | discard_cleanups (old_chain); | |
786 | ||
96baa820 | 787 | /* Call this after reading in a new symbol table to give target |
38c2ef12 | 788 | dependent code a crack at the new symbols. For instance, this |
96baa820 JM |
789 | could be used to update the values of target-specific symbols GDB |
790 | needs to keep track of (such as _sigtramp, or whatever). */ | |
c906108c SS |
791 | |
792 | TARGET_SYMFILE_POSTREAD (objfile); | |
793 | } | |
794 | ||
795 | /* Perform required actions after either reading in the initial | |
796 | symbols for a new objfile, or mapping in the symbols from a reusable | |
797 | objfile. */ | |
c5aa993b | 798 | |
c906108c | 799 | void |
fba45db2 | 800 | new_symfile_objfile (struct objfile *objfile, int mainline, int verbo) |
c906108c SS |
801 | { |
802 | ||
803 | /* If this is the main symbol file we have to clean up all users of the | |
804 | old main symbol file. Otherwise it is sufficient to fixup all the | |
805 | breakpoints that may have been redefined by this symbol file. */ | |
806 | if (mainline) | |
807 | { | |
808 | /* OK, make it the "real" symbol file. */ | |
809 | symfile_objfile = objfile; | |
810 | ||
811 | clear_symtab_users (); | |
812 | } | |
813 | else | |
814 | { | |
815 | breakpoint_re_set (); | |
816 | } | |
817 | ||
818 | /* We're done reading the symbol file; finish off complaints. */ | |
b9caf505 | 819 | clear_complaints (&symfile_complaints, 0, verbo); |
c906108c SS |
820 | } |
821 | ||
822 | /* Process a symbol file, as either the main file or as a dynamically | |
823 | loaded file. | |
824 | ||
825 | NAME is the file name (which will be tilde-expanded and made | |
826 | absolute herein) (but we don't free or modify NAME itself). | |
827 | FROM_TTY says how verbose to be. MAINLINE specifies whether this | |
828 | is the main symbol file, or whether it's an extra symbol file such | |
829 | as dynamically loaded code. If !mainline, ADDR is the address | |
830 | where the text segment was loaded. | |
831 | ||
c906108c SS |
832 | Upon success, returns a pointer to the objfile that was added. |
833 | Upon failure, jumps back to command level (never returns). */ | |
834 | ||
835 | struct objfile * | |
fba45db2 KB |
836 | symbol_file_add (char *name, int from_tty, struct section_addr_info *addrs, |
837 | int mainline, int flags) | |
c906108c SS |
838 | { |
839 | struct objfile *objfile; | |
840 | struct partial_symtab *psymtab; | |
841 | bfd *abfd; | |
842 | ||
843 | /* Open a bfd for the file, and give user a chance to burp if we'd be | |
844 | interactively wiping out any existing symbols. */ | |
845 | ||
846 | abfd = symfile_bfd_open (name); | |
847 | ||
848 | if ((have_full_symbols () || have_partial_symbols ()) | |
849 | && mainline | |
850 | && from_tty | |
851 | && !query ("Load new symbol table from \"%s\"? ", name)) | |
c5aa993b | 852 | error ("Not confirmed."); |
c906108c | 853 | |
2df3850c | 854 | objfile = allocate_objfile (abfd, flags); |
c906108c SS |
855 | |
856 | /* If the objfile uses a mapped symbol file, and we have a psymtab for | |
857 | it, then skip reading any symbols at this time. */ | |
858 | ||
c5aa993b | 859 | if ((objfile->flags & OBJF_MAPPED) && (objfile->flags & OBJF_SYMS)) |
c906108c SS |
860 | { |
861 | /* We mapped in an existing symbol table file that already has had | |
c5aa993b JM |
862 | initial symbol reading performed, so we can skip that part. Notify |
863 | the user that instead of reading the symbols, they have been mapped. | |
864 | */ | |
c906108c SS |
865 | if (from_tty || info_verbose) |
866 | { | |
867 | printf_filtered ("Mapped symbols for %s...", name); | |
868 | wrap_here (""); | |
869 | gdb_flush (gdb_stdout); | |
870 | } | |
871 | init_entry_point_info (objfile); | |
872 | find_sym_fns (objfile); | |
873 | } | |
874 | else | |
875 | { | |
876 | /* We either created a new mapped symbol table, mapped an existing | |
c5aa993b JM |
877 | symbol table file which has not had initial symbol reading |
878 | performed, or need to read an unmapped symbol table. */ | |
c906108c SS |
879 | if (from_tty || info_verbose) |
880 | { | |
881 | if (pre_add_symbol_hook) | |
882 | pre_add_symbol_hook (name); | |
883 | else | |
884 | { | |
885 | printf_filtered ("Reading symbols from %s...", name); | |
886 | wrap_here (""); | |
887 | gdb_flush (gdb_stdout); | |
888 | } | |
889 | } | |
2acceee2 | 890 | syms_from_objfile (objfile, addrs, mainline, from_tty); |
c906108c SS |
891 | } |
892 | ||
893 | /* We now have at least a partial symbol table. Check to see if the | |
894 | user requested that all symbols be read on initial access via either | |
895 | the gdb startup command line or on a per symbol file basis. Expand | |
896 | all partial symbol tables for this objfile if so. */ | |
897 | ||
2acceee2 | 898 | if ((flags & OBJF_READNOW) || readnow_symbol_files) |
c906108c SS |
899 | { |
900 | if (from_tty || info_verbose) | |
901 | { | |
902 | printf_filtered ("expanding to full symbols..."); | |
903 | wrap_here (""); | |
904 | gdb_flush (gdb_stdout); | |
905 | } | |
906 | ||
c5aa993b | 907 | for (psymtab = objfile->psymtabs; |
c906108c | 908 | psymtab != NULL; |
c5aa993b | 909 | psymtab = psymtab->next) |
c906108c SS |
910 | { |
911 | psymtab_to_symtab (psymtab); | |
912 | } | |
913 | } | |
914 | ||
915 | if (from_tty || info_verbose) | |
916 | { | |
917 | if (post_add_symbol_hook) | |
c5aa993b | 918 | post_add_symbol_hook (); |
c906108c | 919 | else |
c5aa993b JM |
920 | { |
921 | printf_filtered ("done.\n"); | |
c5aa993b | 922 | } |
c906108c SS |
923 | } |
924 | ||
481d0f41 JB |
925 | /* We print some messages regardless of whether 'from_tty || |
926 | info_verbose' is true, so make sure they go out at the right | |
927 | time. */ | |
928 | gdb_flush (gdb_stdout); | |
929 | ||
109f874e MS |
930 | if (objfile->sf == NULL) |
931 | return objfile; /* No symbols. */ | |
932 | ||
c906108c SS |
933 | new_symfile_objfile (objfile, mainline, from_tty); |
934 | ||
11cf8741 JM |
935 | if (target_new_objfile_hook) |
936 | target_new_objfile_hook (objfile); | |
c906108c SS |
937 | |
938 | return (objfile); | |
939 | } | |
940 | ||
d7db6da9 FN |
941 | /* Call symbol_file_add() with default values and update whatever is |
942 | affected by the loading of a new main(). | |
943 | Used when the file is supplied in the gdb command line | |
944 | and by some targets with special loading requirements. | |
945 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
946 | argument for the switches that can only be specified in the symbol_file | |
947 | command itself. */ | |
1adeb98a FN |
948 | |
949 | void | |
950 | symbol_file_add_main (char *args, int from_tty) | |
951 | { | |
d7db6da9 FN |
952 | symbol_file_add_main_1 (args, from_tty, 0); |
953 | } | |
954 | ||
955 | static void | |
956 | symbol_file_add_main_1 (char *args, int from_tty, int flags) | |
957 | { | |
958 | symbol_file_add (args, from_tty, NULL, 1, flags); | |
959 | ||
960 | #ifdef HPUXHPPA | |
961 | RESET_HP_UX_GLOBALS (); | |
962 | #endif | |
963 | ||
964 | /* Getting new symbols may change our opinion about | |
965 | what is frameless. */ | |
966 | reinit_frame_cache (); | |
967 | ||
968 | set_initial_language (); | |
1adeb98a FN |
969 | } |
970 | ||
971 | void | |
972 | symbol_file_clear (int from_tty) | |
973 | { | |
974 | if ((have_full_symbols () || have_partial_symbols ()) | |
975 | && from_tty | |
976 | && !query ("Discard symbol table from `%s'? ", | |
977 | symfile_objfile->name)) | |
978 | error ("Not confirmed."); | |
979 | free_all_objfiles (); | |
980 | ||
981 | /* solib descriptors may have handles to objfiles. Since their | |
982 | storage has just been released, we'd better wipe the solib | |
983 | descriptors as well. | |
984 | */ | |
985 | #if defined(SOLIB_RESTART) | |
986 | SOLIB_RESTART (); | |
987 | #endif | |
988 | ||
989 | symfile_objfile = NULL; | |
990 | if (from_tty) | |
991 | printf_unfiltered ("No symbol file now.\n"); | |
992 | #ifdef HPUXHPPA | |
993 | RESET_HP_UX_GLOBALS (); | |
994 | #endif | |
995 | } | |
996 | ||
c906108c SS |
997 | /* This is the symbol-file command. Read the file, analyze its |
998 | symbols, and add a struct symtab to a symtab list. The syntax of | |
999 | the command is rather bizarre--(1) buildargv implements various | |
1000 | quoting conventions which are undocumented and have little or | |
1001 | nothing in common with the way things are quoted (or not quoted) | |
1002 | elsewhere in GDB, (2) options are used, which are not generally | |
1003 | used in GDB (perhaps "set mapped on", "set readnow on" would be | |
1004 | better), (3) the order of options matters, which is contrary to GNU | |
1005 | conventions (because it is confusing and inconvenient). */ | |
4da95fc4 EZ |
1006 | /* Note: ezannoni 2000-04-17. This function used to have support for |
1007 | rombug (see remote-os9k.c). It consisted of a call to target_link() | |
1008 | (target.c) to get the address of the text segment from the target, | |
1009 | and pass that to symbol_file_add(). This is no longer supported. */ | |
c906108c SS |
1010 | |
1011 | void | |
fba45db2 | 1012 | symbol_file_command (char *args, int from_tty) |
c906108c SS |
1013 | { |
1014 | char **argv; | |
1015 | char *name = NULL; | |
c906108c | 1016 | struct cleanup *cleanups; |
2df3850c | 1017 | int flags = OBJF_USERLOADED; |
c906108c SS |
1018 | |
1019 | dont_repeat (); | |
1020 | ||
1021 | if (args == NULL) | |
1022 | { | |
1adeb98a | 1023 | symbol_file_clear (from_tty); |
c906108c SS |
1024 | } |
1025 | else | |
1026 | { | |
1027 | if ((argv = buildargv (args)) == NULL) | |
1028 | { | |
1029 | nomem (0); | |
1030 | } | |
7a292a7a | 1031 | cleanups = make_cleanup_freeargv (argv); |
c906108c SS |
1032 | while (*argv != NULL) |
1033 | { | |
1034 | if (STREQ (*argv, "-mapped")) | |
4da95fc4 EZ |
1035 | flags |= OBJF_MAPPED; |
1036 | else | |
1037 | if (STREQ (*argv, "-readnow")) | |
2acceee2 | 1038 | flags |= OBJF_READNOW; |
4da95fc4 EZ |
1039 | else |
1040 | if (**argv == '-') | |
1041 | error ("unknown option `%s'", *argv); | |
c5aa993b | 1042 | else |
c5aa993b | 1043 | { |
4da95fc4 | 1044 | name = *argv; |
c906108c | 1045 | |
d7db6da9 | 1046 | symbol_file_add_main_1 (name, from_tty, flags); |
4da95fc4 | 1047 | } |
c906108c SS |
1048 | argv++; |
1049 | } | |
1050 | ||
1051 | if (name == NULL) | |
1052 | { | |
1053 | error ("no symbol file name was specified"); | |
1054 | } | |
c906108c SS |
1055 | do_cleanups (cleanups); |
1056 | } | |
1057 | } | |
1058 | ||
1059 | /* Set the initial language. | |
1060 | ||
1061 | A better solution would be to record the language in the psymtab when reading | |
1062 | partial symbols, and then use it (if known) to set the language. This would | |
1063 | be a win for formats that encode the language in an easily discoverable place, | |
1064 | such as DWARF. For stabs, we can jump through hoops looking for specially | |
1065 | named symbols or try to intuit the language from the specific type of stabs | |
1066 | we find, but we can't do that until later when we read in full symbols. | |
1067 | FIXME. */ | |
1068 | ||
1069 | static void | |
fba45db2 | 1070 | set_initial_language (void) |
c906108c SS |
1071 | { |
1072 | struct partial_symtab *pst; | |
c5aa993b | 1073 | enum language lang = language_unknown; |
c906108c SS |
1074 | |
1075 | pst = find_main_psymtab (); | |
1076 | if (pst != NULL) | |
1077 | { | |
c5aa993b | 1078 | if (pst->filename != NULL) |
c906108c | 1079 | { |
c5aa993b JM |
1080 | lang = deduce_language_from_filename (pst->filename); |
1081 | } | |
c906108c SS |
1082 | if (lang == language_unknown) |
1083 | { | |
c5aa993b JM |
1084 | /* Make C the default language */ |
1085 | lang = language_c; | |
c906108c SS |
1086 | } |
1087 | set_language (lang); | |
1088 | expected_language = current_language; /* Don't warn the user */ | |
1089 | } | |
1090 | } | |
1091 | ||
1092 | /* Open file specified by NAME and hand it off to BFD for preliminary | |
1093 | analysis. Result is a newly initialized bfd *, which includes a newly | |
1094 | malloc'd` copy of NAME (tilde-expanded and made absolute). | |
1095 | In case of trouble, error() is called. */ | |
1096 | ||
1097 | bfd * | |
fba45db2 | 1098 | symfile_bfd_open (char *name) |
c906108c SS |
1099 | { |
1100 | bfd *sym_bfd; | |
1101 | int desc; | |
1102 | char *absolute_name; | |
1103 | ||
1104 | ||
1105 | ||
1106 | name = tilde_expand (name); /* Returns 1st new malloc'd copy */ | |
1107 | ||
1108 | /* Look down path for it, allocate 2nd new malloc'd copy. */ | |
1109 | desc = openp (getenv ("PATH"), 1, name, O_RDONLY | O_BINARY, 0, &absolute_name); | |
608506ed | 1110 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
c906108c SS |
1111 | if (desc < 0) |
1112 | { | |
1113 | char *exename = alloca (strlen (name) + 5); | |
1114 | strcat (strcpy (exename, name), ".exe"); | |
1115 | desc = openp (getenv ("PATH"), 1, exename, O_RDONLY | O_BINARY, | |
c5aa993b | 1116 | 0, &absolute_name); |
c906108c SS |
1117 | } |
1118 | #endif | |
1119 | if (desc < 0) | |
1120 | { | |
b8c9b27d | 1121 | make_cleanup (xfree, name); |
c906108c SS |
1122 | perror_with_name (name); |
1123 | } | |
b8c9b27d | 1124 | xfree (name); /* Free 1st new malloc'd copy */ |
c906108c | 1125 | name = absolute_name; /* Keep 2nd malloc'd copy in bfd */ |
c5aa993b | 1126 | /* It'll be freed in free_objfile(). */ |
c906108c SS |
1127 | |
1128 | sym_bfd = bfd_fdopenr (name, gnutarget, desc); | |
1129 | if (!sym_bfd) | |
1130 | { | |
1131 | close (desc); | |
b8c9b27d | 1132 | make_cleanup (xfree, name); |
c906108c SS |
1133 | error ("\"%s\": can't open to read symbols: %s.", name, |
1134 | bfd_errmsg (bfd_get_error ())); | |
1135 | } | |
81a9a963 | 1136 | sym_bfd->cacheable = 1; |
c906108c SS |
1137 | |
1138 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1139 | { | |
1140 | /* FIXME: should be checking for errors from bfd_close (for one thing, | |
c5aa993b JM |
1141 | on error it does not free all the storage associated with the |
1142 | bfd). */ | |
c906108c | 1143 | bfd_close (sym_bfd); /* This also closes desc */ |
b8c9b27d | 1144 | make_cleanup (xfree, name); |
c906108c SS |
1145 | error ("\"%s\": can't read symbols: %s.", name, |
1146 | bfd_errmsg (bfd_get_error ())); | |
1147 | } | |
1148 | return (sym_bfd); | |
1149 | } | |
1150 | ||
0e931cf0 JB |
1151 | /* Return the section index for the given section name. Return -1 if |
1152 | the section was not found. */ | |
1153 | int | |
1154 | get_section_index (struct objfile *objfile, char *section_name) | |
1155 | { | |
1156 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
1157 | if (sect) | |
1158 | return sect->index; | |
1159 | else | |
1160 | return -1; | |
1161 | } | |
1162 | ||
c906108c SS |
1163 | /* Link a new symtab_fns into the global symtab_fns list. Called on gdb |
1164 | startup by the _initialize routine in each object file format reader, | |
1165 | to register information about each format the the reader is prepared | |
1166 | to handle. */ | |
1167 | ||
1168 | void | |
fba45db2 | 1169 | add_symtab_fns (struct sym_fns *sf) |
c906108c SS |
1170 | { |
1171 | sf->next = symtab_fns; | |
1172 | symtab_fns = sf; | |
1173 | } | |
1174 | ||
1175 | ||
1176 | /* Initialize to read symbols from the symbol file sym_bfd. It either | |
1177 | returns or calls error(). The result is an initialized struct sym_fns | |
1178 | in the objfile structure, that contains cached information about the | |
1179 | symbol file. */ | |
1180 | ||
1181 | static void | |
fba45db2 | 1182 | find_sym_fns (struct objfile *objfile) |
c906108c SS |
1183 | { |
1184 | struct sym_fns *sf; | |
c5aa993b JM |
1185 | enum bfd_flavour our_flavour = bfd_get_flavour (objfile->obfd); |
1186 | char *our_target = bfd_get_target (objfile->obfd); | |
c906108c | 1187 | |
75245b24 MS |
1188 | if (our_flavour == bfd_target_srec_flavour |
1189 | || our_flavour == bfd_target_ihex_flavour | |
1190 | || our_flavour == bfd_target_tekhex_flavour) | |
1191 | return; /* No symbols. */ | |
1192 | ||
c906108c SS |
1193 | /* Special kludge for apollo. See dstread.c. */ |
1194 | if (STREQN (our_target, "apollo", 6)) | |
c5aa993b | 1195 | our_flavour = (enum bfd_flavour) -2; |
c906108c | 1196 | |
c5aa993b | 1197 | for (sf = symtab_fns; sf != NULL; sf = sf->next) |
c906108c | 1198 | { |
c5aa993b | 1199 | if (our_flavour == sf->sym_flavour) |
c906108c | 1200 | { |
c5aa993b | 1201 | objfile->sf = sf; |
c906108c SS |
1202 | return; |
1203 | } | |
1204 | } | |
1205 | error ("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown.", | |
c5aa993b | 1206 | bfd_get_target (objfile->obfd)); |
c906108c SS |
1207 | } |
1208 | \f | |
1209 | /* This function runs the load command of our current target. */ | |
1210 | ||
1211 | static void | |
fba45db2 | 1212 | load_command (char *arg, int from_tty) |
c906108c SS |
1213 | { |
1214 | if (arg == NULL) | |
1215 | arg = get_exec_file (1); | |
1216 | target_load (arg, from_tty); | |
2889e661 JB |
1217 | |
1218 | /* After re-loading the executable, we don't really know which | |
1219 | overlays are mapped any more. */ | |
1220 | overlay_cache_invalid = 1; | |
c906108c SS |
1221 | } |
1222 | ||
1223 | /* This version of "load" should be usable for any target. Currently | |
1224 | it is just used for remote targets, not inftarg.c or core files, | |
1225 | on the theory that only in that case is it useful. | |
1226 | ||
1227 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1228 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1229 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1230 | performance compares. */ | |
917317f4 JM |
1231 | |
1232 | static int download_write_size = 512; | |
1233 | static int validate_download = 0; | |
1234 | ||
e4f9b4d5 MS |
1235 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1236 | ||
1237 | static void | |
1238 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1239 | { | |
1240 | bfd_size_type *sum = data; | |
1241 | ||
1242 | *sum += bfd_get_section_size_before_reloc (asec); | |
1243 | } | |
1244 | ||
1245 | /* Opaque data for load_section_callback. */ | |
1246 | struct load_section_data { | |
1247 | unsigned long load_offset; | |
1248 | unsigned long write_count; | |
1249 | unsigned long data_count; | |
1250 | bfd_size_type total_size; | |
1251 | }; | |
1252 | ||
1253 | /* Callback service function for generic_load (bfd_map_over_sections). */ | |
1254 | ||
1255 | static void | |
1256 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
1257 | { | |
1258 | struct load_section_data *args = data; | |
1259 | ||
1260 | if (bfd_get_section_flags (abfd, asec) & SEC_LOAD) | |
1261 | { | |
1262 | bfd_size_type size = bfd_get_section_size_before_reloc (asec); | |
1263 | if (size > 0) | |
1264 | { | |
1265 | char *buffer; | |
1266 | struct cleanup *old_chain; | |
1267 | CORE_ADDR lma = bfd_section_lma (abfd, asec) + args->load_offset; | |
1268 | bfd_size_type block_size; | |
1269 | int err; | |
1270 | const char *sect_name = bfd_get_section_name (abfd, asec); | |
1271 | bfd_size_type sent; | |
1272 | ||
1273 | if (download_write_size > 0 && size > download_write_size) | |
1274 | block_size = download_write_size; | |
1275 | else | |
1276 | block_size = size; | |
1277 | ||
1278 | buffer = xmalloc (size); | |
1279 | old_chain = make_cleanup (xfree, buffer); | |
1280 | ||
1281 | /* Is this really necessary? I guess it gives the user something | |
1282 | to look at during a long download. */ | |
e4f9b4d5 MS |
1283 | ui_out_message (uiout, 0, "Loading section %s, size 0x%s lma 0x%s\n", |
1284 | sect_name, paddr_nz (size), paddr_nz (lma)); | |
e4f9b4d5 MS |
1285 | |
1286 | bfd_get_section_contents (abfd, asec, buffer, 0, size); | |
1287 | ||
1288 | sent = 0; | |
1289 | do | |
1290 | { | |
1291 | int len; | |
1292 | bfd_size_type this_transfer = size - sent; | |
1293 | ||
1294 | if (this_transfer >= block_size) | |
1295 | this_transfer = block_size; | |
1296 | len = target_write_memory_partial (lma, buffer, | |
1297 | this_transfer, &err); | |
1298 | if (err) | |
1299 | break; | |
1300 | if (validate_download) | |
1301 | { | |
1302 | /* Broken memories and broken monitors manifest | |
1303 | themselves here when bring new computers to | |
1304 | life. This doubles already slow downloads. */ | |
1305 | /* NOTE: cagney/1999-10-18: A more efficient | |
1306 | implementation might add a verify_memory() | |
1307 | method to the target vector and then use | |
1308 | that. remote.c could implement that method | |
1309 | using the ``qCRC'' packet. */ | |
1310 | char *check = xmalloc (len); | |
1311 | struct cleanup *verify_cleanups = | |
1312 | make_cleanup (xfree, check); | |
1313 | ||
1314 | if (target_read_memory (lma, check, len) != 0) | |
1315 | error ("Download verify read failed at 0x%s", | |
1316 | paddr (lma)); | |
1317 | if (memcmp (buffer, check, len) != 0) | |
1318 | error ("Download verify compare failed at 0x%s", | |
1319 | paddr (lma)); | |
1320 | do_cleanups (verify_cleanups); | |
1321 | } | |
1322 | args->data_count += len; | |
1323 | lma += len; | |
1324 | buffer += len; | |
1325 | args->write_count += 1; | |
1326 | sent += len; | |
1327 | if (quit_flag | |
1328 | || (ui_load_progress_hook != NULL | |
1329 | && ui_load_progress_hook (sect_name, sent))) | |
1330 | error ("Canceled the download"); | |
1331 | ||
1332 | if (show_load_progress != NULL) | |
1333 | show_load_progress (sect_name, sent, size, | |
1334 | args->data_count, args->total_size); | |
1335 | } | |
1336 | while (sent < size); | |
1337 | ||
1338 | if (err != 0) | |
1339 | error ("Memory access error while loading section %s.", sect_name); | |
1340 | ||
1341 | do_cleanups (old_chain); | |
1342 | } | |
1343 | } | |
1344 | } | |
1345 | ||
c906108c | 1346 | void |
917317f4 | 1347 | generic_load (char *args, int from_tty) |
c906108c | 1348 | { |
c906108c SS |
1349 | asection *s; |
1350 | bfd *loadfile_bfd; | |
1351 | time_t start_time, end_time; /* Start and end times of download */ | |
917317f4 JM |
1352 | char *filename; |
1353 | struct cleanup *old_cleanups; | |
1354 | char *offptr; | |
e4f9b4d5 MS |
1355 | struct load_section_data cbdata; |
1356 | CORE_ADDR entry; | |
1357 | ||
1358 | cbdata.load_offset = 0; /* Offset to add to vma for each section. */ | |
1359 | cbdata.write_count = 0; /* Number of writes needed. */ | |
1360 | cbdata.data_count = 0; /* Number of bytes written to target memory. */ | |
1361 | cbdata.total_size = 0; /* Total size of all bfd sectors. */ | |
917317f4 JM |
1362 | |
1363 | /* Parse the input argument - the user can specify a load offset as | |
1364 | a second argument. */ | |
1365 | filename = xmalloc (strlen (args) + 1); | |
b8c9b27d | 1366 | old_cleanups = make_cleanup (xfree, filename); |
917317f4 JM |
1367 | strcpy (filename, args); |
1368 | offptr = strchr (filename, ' '); | |
1369 | if (offptr != NULL) | |
1370 | { | |
1371 | char *endptr; | |
ba5f2f8a | 1372 | |
e4f9b4d5 | 1373 | cbdata.load_offset = strtoul (offptr, &endptr, 0); |
917317f4 JM |
1374 | if (offptr == endptr) |
1375 | error ("Invalid download offset:%s\n", offptr); | |
1376 | *offptr = '\0'; | |
1377 | } | |
c906108c | 1378 | else |
e4f9b4d5 | 1379 | cbdata.load_offset = 0; |
c906108c | 1380 | |
917317f4 | 1381 | /* Open the file for loading. */ |
c906108c SS |
1382 | loadfile_bfd = bfd_openr (filename, gnutarget); |
1383 | if (loadfile_bfd == NULL) | |
1384 | { | |
1385 | perror_with_name (filename); | |
1386 | return; | |
1387 | } | |
917317f4 | 1388 | |
c906108c SS |
1389 | /* FIXME: should be checking for errors from bfd_close (for one thing, |
1390 | on error it does not free all the storage associated with the | |
1391 | bfd). */ | |
5c65bbb6 | 1392 | make_cleanup_bfd_close (loadfile_bfd); |
c906108c | 1393 | |
c5aa993b | 1394 | if (!bfd_check_format (loadfile_bfd, bfd_object)) |
c906108c SS |
1395 | { |
1396 | error ("\"%s\" is not an object file: %s", filename, | |
1397 | bfd_errmsg (bfd_get_error ())); | |
1398 | } | |
c5aa993b | 1399 | |
e4f9b4d5 MS |
1400 | bfd_map_over_sections (loadfile_bfd, add_section_size_callback, |
1401 | (void *) &cbdata.total_size); | |
c2d11a7d | 1402 | |
c906108c SS |
1403 | start_time = time (NULL); |
1404 | ||
e4f9b4d5 | 1405 | bfd_map_over_sections (loadfile_bfd, load_section_callback, &cbdata); |
c906108c SS |
1406 | |
1407 | end_time = time (NULL); | |
ba5f2f8a | 1408 | |
e4f9b4d5 | 1409 | entry = bfd_get_start_address (loadfile_bfd); |
e4f9b4d5 MS |
1410 | ui_out_text (uiout, "Start address "); |
1411 | ui_out_field_fmt (uiout, "address", "0x%s", paddr_nz (entry)); | |
1412 | ui_out_text (uiout, ", load size "); | |
1413 | ui_out_field_fmt (uiout, "load-size", "%lu", cbdata.data_count); | |
1414 | ui_out_text (uiout, "\n"); | |
e4f9b4d5 MS |
1415 | /* We were doing this in remote-mips.c, I suspect it is right |
1416 | for other targets too. */ | |
1417 | write_pc (entry); | |
c906108c SS |
1418 | |
1419 | /* FIXME: are we supposed to call symbol_file_add or not? According to | |
1420 | a comment from remote-mips.c (where a call to symbol_file_add was | |
1421 | commented out), making the call confuses GDB if more than one file is | |
1422 | loaded in. remote-nindy.c had no call to symbol_file_add, but remote-vx.c | |
1423 | does. */ | |
1424 | ||
e4f9b4d5 MS |
1425 | print_transfer_performance (gdb_stdout, cbdata.data_count, |
1426 | cbdata.write_count, end_time - start_time); | |
c906108c SS |
1427 | |
1428 | do_cleanups (old_cleanups); | |
1429 | } | |
1430 | ||
1431 | /* Report how fast the transfer went. */ | |
1432 | ||
917317f4 JM |
1433 | /* DEPRECATED: cagney/1999-10-18: report_transfer_performance is being |
1434 | replaced by print_transfer_performance (with a very different | |
1435 | function signature). */ | |
1436 | ||
c906108c | 1437 | void |
fba45db2 KB |
1438 | report_transfer_performance (unsigned long data_count, time_t start_time, |
1439 | time_t end_time) | |
c906108c | 1440 | { |
ba5f2f8a MS |
1441 | print_transfer_performance (gdb_stdout, data_count, |
1442 | end_time - start_time, 0); | |
917317f4 JM |
1443 | } |
1444 | ||
1445 | void | |
d9fcf2fb | 1446 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
1447 | unsigned long data_count, |
1448 | unsigned long write_count, | |
1449 | unsigned long time_count) | |
1450 | { | |
8b93c638 JM |
1451 | ui_out_text (uiout, "Transfer rate: "); |
1452 | if (time_count > 0) | |
1453 | { | |
ba5f2f8a | 1454 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", |
8b93c638 JM |
1455 | (data_count * 8) / time_count); |
1456 | ui_out_text (uiout, " bits/sec"); | |
1457 | } | |
1458 | else | |
1459 | { | |
ba5f2f8a | 1460 | ui_out_field_fmt (uiout, "transferred-bits", "%lu", (data_count * 8)); |
8b93c638 JM |
1461 | ui_out_text (uiout, " bits in <1 sec"); |
1462 | } | |
1463 | if (write_count > 0) | |
1464 | { | |
1465 | ui_out_text (uiout, ", "); | |
ba5f2f8a | 1466 | ui_out_field_fmt (uiout, "write-rate", "%lu", data_count / write_count); |
8b93c638 JM |
1467 | ui_out_text (uiout, " bytes/write"); |
1468 | } | |
1469 | ui_out_text (uiout, ".\n"); | |
c906108c SS |
1470 | } |
1471 | ||
1472 | /* This function allows the addition of incrementally linked object files. | |
1473 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
1474 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
1475 | special case syntax for the rombug target (Rombug is the boot | |
1476 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
1477 | rombug case, the user doesn't need to supply a text address, | |
1478 | instead a call to target_link() (in target.c) would supply the | |
1479 | value to use. We are now discontinuing this type of ad hoc syntax. */ | |
c906108c SS |
1480 | |
1481 | /* ARGSUSED */ | |
1482 | static void | |
fba45db2 | 1483 | add_symbol_file_command (char *args, int from_tty) |
c906108c | 1484 | { |
db162d44 | 1485 | char *filename = NULL; |
2df3850c | 1486 | int flags = OBJF_USERLOADED; |
c906108c | 1487 | char *arg; |
2acceee2 | 1488 | int expecting_option = 0; |
db162d44 | 1489 | int section_index = 0; |
2acceee2 JM |
1490 | int argcnt = 0; |
1491 | int sec_num = 0; | |
1492 | int i; | |
db162d44 EZ |
1493 | int expecting_sec_name = 0; |
1494 | int expecting_sec_addr = 0; | |
1495 | ||
2acceee2 JM |
1496 | struct |
1497 | { | |
2acceee2 JM |
1498 | char *name; |
1499 | char *value; | |
db162d44 EZ |
1500 | } sect_opts[SECT_OFF_MAX]; |
1501 | ||
2acceee2 | 1502 | struct section_addr_info section_addrs; |
3017564a | 1503 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); |
c5aa993b | 1504 | |
c906108c SS |
1505 | dont_repeat (); |
1506 | ||
1507 | if (args == NULL) | |
db162d44 | 1508 | error ("add-symbol-file takes a file name and an address"); |
c906108c SS |
1509 | |
1510 | /* Make a copy of the string that we can safely write into. */ | |
c2d11a7d | 1511 | args = xstrdup (args); |
c906108c | 1512 | |
2acceee2 JM |
1513 | /* Ensure section_addrs is initialized */ |
1514 | memset (§ion_addrs, 0, sizeof (section_addrs)); | |
1515 | ||
2acceee2 | 1516 | while (*args != '\000') |
c906108c | 1517 | { |
db162d44 | 1518 | /* Any leading spaces? */ |
c5aa993b | 1519 | while (isspace (*args)) |
db162d44 EZ |
1520 | args++; |
1521 | ||
1522 | /* Point arg to the beginning of the argument. */ | |
c906108c | 1523 | arg = args; |
db162d44 EZ |
1524 | |
1525 | /* Move args pointer over the argument. */ | |
c5aa993b | 1526 | while ((*args != '\000') && !isspace (*args)) |
db162d44 EZ |
1527 | args++; |
1528 | ||
1529 | /* If there are more arguments, terminate arg and | |
1530 | proceed past it. */ | |
c906108c | 1531 | if (*args != '\000') |
db162d44 EZ |
1532 | *args++ = '\000'; |
1533 | ||
1534 | /* Now process the argument. */ | |
1535 | if (argcnt == 0) | |
c906108c | 1536 | { |
db162d44 EZ |
1537 | /* The first argument is the file name. */ |
1538 | filename = tilde_expand (arg); | |
3017564a | 1539 | make_cleanup (xfree, filename); |
c906108c | 1540 | } |
db162d44 | 1541 | else |
7a78ae4e ND |
1542 | if (argcnt == 1) |
1543 | { | |
1544 | /* The second argument is always the text address at which | |
1545 | to load the program. */ | |
1546 | sect_opts[section_index].name = ".text"; | |
1547 | sect_opts[section_index].value = arg; | |
1548 | section_index++; | |
1549 | } | |
1550 | else | |
1551 | { | |
1552 | /* It's an option (starting with '-') or it's an argument | |
1553 | to an option */ | |
1554 | ||
1555 | if (*arg == '-') | |
1556 | { | |
1557 | if (strcmp (arg, "-mapped") == 0) | |
1558 | flags |= OBJF_MAPPED; | |
1559 | else | |
1560 | if (strcmp (arg, "-readnow") == 0) | |
1561 | flags |= OBJF_READNOW; | |
1562 | else | |
1563 | if (strcmp (arg, "-s") == 0) | |
1564 | { | |
1565 | if (section_index >= SECT_OFF_MAX) | |
1566 | error ("Too many sections specified."); | |
1567 | expecting_sec_name = 1; | |
1568 | expecting_sec_addr = 1; | |
1569 | } | |
1570 | } | |
1571 | else | |
1572 | { | |
1573 | if (expecting_sec_name) | |
db162d44 | 1574 | { |
7a78ae4e ND |
1575 | sect_opts[section_index].name = arg; |
1576 | expecting_sec_name = 0; | |
db162d44 EZ |
1577 | } |
1578 | else | |
7a78ae4e ND |
1579 | if (expecting_sec_addr) |
1580 | { | |
1581 | sect_opts[section_index].value = arg; | |
1582 | expecting_sec_addr = 0; | |
1583 | section_index++; | |
1584 | } | |
1585 | else | |
1586 | error ("USAGE: add-symbol-file <filename> <textaddress> [-mapped] [-readnow] [-s <secname> <addr>]*"); | |
1587 | } | |
1588 | } | |
db162d44 | 1589 | argcnt++; |
c906108c | 1590 | } |
c906108c | 1591 | |
db162d44 EZ |
1592 | /* Print the prompt for the query below. And save the arguments into |
1593 | a sect_addr_info structure to be passed around to other | |
1594 | functions. We have to split this up into separate print | |
1595 | statements because local_hex_string returns a local static | |
1596 | string. */ | |
2acceee2 | 1597 | |
db162d44 EZ |
1598 | printf_filtered ("add symbol table from file \"%s\" at\n", filename); |
1599 | for (i = 0; i < section_index; i++) | |
c906108c | 1600 | { |
db162d44 EZ |
1601 | CORE_ADDR addr; |
1602 | char *val = sect_opts[i].value; | |
1603 | char *sec = sect_opts[i].name; | |
1604 | ||
1605 | val = sect_opts[i].value; | |
1606 | if (val[0] == '0' && val[1] == 'x') | |
1607 | addr = strtoul (val+2, NULL, 16); | |
1608 | else | |
1609 | addr = strtoul (val, NULL, 10); | |
1610 | ||
db162d44 EZ |
1611 | /* Here we store the section offsets in the order they were |
1612 | entered on the command line. */ | |
1613 | section_addrs.other[sec_num].name = sec; | |
1614 | section_addrs.other[sec_num].addr = addr; | |
1615 | printf_filtered ("\t%s_addr = %s\n", | |
1616 | sec, | |
1617 | local_hex_string ((unsigned long)addr)); | |
1618 | sec_num++; | |
1619 | ||
1620 | /* The object's sections are initialized when a | |
1621 | call is made to build_objfile_section_table (objfile). | |
1622 | This happens in reread_symbols. | |
1623 | At this point, we don't know what file type this is, | |
1624 | so we can't determine what section names are valid. */ | |
2acceee2 | 1625 | } |
db162d44 | 1626 | |
2acceee2 | 1627 | if (from_tty && (!query ("%s", ""))) |
c906108c SS |
1628 | error ("Not confirmed."); |
1629 | ||
db162d44 | 1630 | symbol_file_add (filename, from_tty, §ion_addrs, 0, flags); |
c906108c SS |
1631 | |
1632 | /* Getting new symbols may change our opinion about what is | |
1633 | frameless. */ | |
1634 | reinit_frame_cache (); | |
db162d44 | 1635 | do_cleanups (my_cleanups); |
c906108c SS |
1636 | } |
1637 | \f | |
1638 | static void | |
fba45db2 | 1639 | add_shared_symbol_files_command (char *args, int from_tty) |
c906108c SS |
1640 | { |
1641 | #ifdef ADD_SHARED_SYMBOL_FILES | |
1642 | ADD_SHARED_SYMBOL_FILES (args, from_tty); | |
1643 | #else | |
1644 | error ("This command is not available in this configuration of GDB."); | |
c5aa993b | 1645 | #endif |
c906108c SS |
1646 | } |
1647 | \f | |
1648 | /* Re-read symbols if a symbol-file has changed. */ | |
1649 | void | |
fba45db2 | 1650 | reread_symbols (void) |
c906108c SS |
1651 | { |
1652 | struct objfile *objfile; | |
1653 | long new_modtime; | |
1654 | int reread_one = 0; | |
1655 | struct stat new_statbuf; | |
1656 | int res; | |
1657 | ||
1658 | /* With the addition of shared libraries, this should be modified, | |
1659 | the load time should be saved in the partial symbol tables, since | |
1660 | different tables may come from different source files. FIXME. | |
1661 | This routine should then walk down each partial symbol table | |
1662 | and see if the symbol table that it originates from has been changed */ | |
1663 | ||
c5aa993b JM |
1664 | for (objfile = object_files; objfile; objfile = objfile->next) |
1665 | { | |
1666 | if (objfile->obfd) | |
1667 | { | |
c906108c | 1668 | #ifdef IBM6000_TARGET |
c5aa993b JM |
1669 | /* If this object is from a shared library, then you should |
1670 | stat on the library name, not member name. */ | |
c906108c | 1671 | |
c5aa993b JM |
1672 | if (objfile->obfd->my_archive) |
1673 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
1674 | else | |
c906108c | 1675 | #endif |
c5aa993b JM |
1676 | res = stat (objfile->name, &new_statbuf); |
1677 | if (res != 0) | |
c906108c | 1678 | { |
c5aa993b JM |
1679 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
1680 | printf_filtered ("`%s' has disappeared; keeping its symbols.\n", | |
1681 | objfile->name); | |
1682 | continue; | |
c906108c | 1683 | } |
c5aa993b JM |
1684 | new_modtime = new_statbuf.st_mtime; |
1685 | if (new_modtime != objfile->mtime) | |
c906108c | 1686 | { |
c5aa993b JM |
1687 | struct cleanup *old_cleanups; |
1688 | struct section_offsets *offsets; | |
1689 | int num_offsets; | |
c5aa993b JM |
1690 | char *obfd_filename; |
1691 | ||
1692 | printf_filtered ("`%s' has changed; re-reading symbols.\n", | |
1693 | objfile->name); | |
1694 | ||
1695 | /* There are various functions like symbol_file_add, | |
1696 | symfile_bfd_open, syms_from_objfile, etc., which might | |
1697 | appear to do what we want. But they have various other | |
1698 | effects which we *don't* want. So we just do stuff | |
1699 | ourselves. We don't worry about mapped files (for one thing, | |
1700 | any mapped file will be out of date). */ | |
1701 | ||
1702 | /* If we get an error, blow away this objfile (not sure if | |
1703 | that is the correct response for things like shared | |
1704 | libraries). */ | |
74b7792f | 1705 | old_cleanups = make_cleanup_free_objfile (objfile); |
c5aa993b | 1706 | /* We need to do this whenever any symbols go away. */ |
74b7792f | 1707 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c5aa993b JM |
1708 | |
1709 | /* Clean up any state BFD has sitting around. We don't need | |
1710 | to close the descriptor but BFD lacks a way of closing the | |
1711 | BFD without closing the descriptor. */ | |
1712 | obfd_filename = bfd_get_filename (objfile->obfd); | |
1713 | if (!bfd_close (objfile->obfd)) | |
1714 | error ("Can't close BFD for %s: %s", objfile->name, | |
1715 | bfd_errmsg (bfd_get_error ())); | |
1716 | objfile->obfd = bfd_openr (obfd_filename, gnutarget); | |
1717 | if (objfile->obfd == NULL) | |
1718 | error ("Can't open %s to read symbols.", objfile->name); | |
1719 | /* bfd_openr sets cacheable to true, which is what we want. */ | |
1720 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
1721 | error ("Can't read symbols from %s: %s.", objfile->name, | |
1722 | bfd_errmsg (bfd_get_error ())); | |
1723 | ||
1724 | /* Save the offsets, we will nuke them with the rest of the | |
1725 | psymbol_obstack. */ | |
1726 | num_offsets = objfile->num_sections; | |
d4f3574e SS |
1727 | offsets = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); |
1728 | memcpy (offsets, objfile->section_offsets, SIZEOF_SECTION_OFFSETS); | |
c5aa993b JM |
1729 | |
1730 | /* Nuke all the state that we will re-read. Much of the following | |
1731 | code which sets things to NULL really is necessary to tell | |
1732 | other parts of GDB that there is nothing currently there. */ | |
1733 | ||
1734 | /* FIXME: Do we have to free a whole linked list, or is this | |
1735 | enough? */ | |
1736 | if (objfile->global_psymbols.list) | |
aac7f4ea | 1737 | xmfree (objfile->md, objfile->global_psymbols.list); |
c5aa993b JM |
1738 | memset (&objfile->global_psymbols, 0, |
1739 | sizeof (objfile->global_psymbols)); | |
1740 | if (objfile->static_psymbols.list) | |
aac7f4ea | 1741 | xmfree (objfile->md, objfile->static_psymbols.list); |
c5aa993b JM |
1742 | memset (&objfile->static_psymbols, 0, |
1743 | sizeof (objfile->static_psymbols)); | |
1744 | ||
1745 | /* Free the obstacks for non-reusable objfiles */ | |
af5f3db6 AC |
1746 | bcache_xfree (objfile->psymbol_cache); |
1747 | objfile->psymbol_cache = bcache_xmalloc (); | |
1748 | bcache_xfree (objfile->macro_cache); | |
1749 | objfile->macro_cache = bcache_xmalloc (); | |
c5aa993b JM |
1750 | obstack_free (&objfile->psymbol_obstack, 0); |
1751 | obstack_free (&objfile->symbol_obstack, 0); | |
1752 | obstack_free (&objfile->type_obstack, 0); | |
1753 | objfile->sections = NULL; | |
1754 | objfile->symtabs = NULL; | |
1755 | objfile->psymtabs = NULL; | |
1756 | objfile->free_psymtabs = NULL; | |
1757 | objfile->msymbols = NULL; | |
1758 | objfile->minimal_symbol_count = 0; | |
0a83117a MS |
1759 | memset (&objfile->msymbol_hash, 0, |
1760 | sizeof (objfile->msymbol_hash)); | |
1761 | memset (&objfile->msymbol_demangled_hash, 0, | |
1762 | sizeof (objfile->msymbol_demangled_hash)); | |
c5aa993b JM |
1763 | objfile->fundamental_types = NULL; |
1764 | if (objfile->sf != NULL) | |
1765 | { | |
1766 | (*objfile->sf->sym_finish) (objfile); | |
1767 | } | |
1768 | ||
1769 | /* We never make this a mapped file. */ | |
1770 | objfile->md = NULL; | |
1771 | /* obstack_specify_allocation also initializes the obstack so | |
1772 | it is empty. */ | |
af5f3db6 AC |
1773 | objfile->psymbol_cache = bcache_xmalloc (); |
1774 | objfile->macro_cache = bcache_xmalloc (); | |
c5aa993b | 1775 | obstack_specify_allocation (&objfile->psymbol_obstack, 0, 0, |
b8c9b27d | 1776 | xmalloc, xfree); |
c5aa993b | 1777 | obstack_specify_allocation (&objfile->symbol_obstack, 0, 0, |
b8c9b27d | 1778 | xmalloc, xfree); |
c5aa993b | 1779 | obstack_specify_allocation (&objfile->type_obstack, 0, 0, |
b8c9b27d | 1780 | xmalloc, xfree); |
c5aa993b JM |
1781 | if (build_objfile_section_table (objfile)) |
1782 | { | |
1783 | error ("Can't find the file sections in `%s': %s", | |
1784 | objfile->name, bfd_errmsg (bfd_get_error ())); | |
1785 | } | |
1786 | ||
1787 | /* We use the same section offsets as from last time. I'm not | |
1788 | sure whether that is always correct for shared libraries. */ | |
1789 | objfile->section_offsets = (struct section_offsets *) | |
d4f3574e SS |
1790 | obstack_alloc (&objfile->psymbol_obstack, SIZEOF_SECTION_OFFSETS); |
1791 | memcpy (objfile->section_offsets, offsets, SIZEOF_SECTION_OFFSETS); | |
c5aa993b JM |
1792 | objfile->num_sections = num_offsets; |
1793 | ||
1794 | /* What the hell is sym_new_init for, anyway? The concept of | |
1795 | distinguishing between the main file and additional files | |
1796 | in this way seems rather dubious. */ | |
1797 | if (objfile == symfile_objfile) | |
1798 | { | |
1799 | (*objfile->sf->sym_new_init) (objfile); | |
c906108c | 1800 | #ifdef HPUXHPPA |
c5aa993b | 1801 | RESET_HP_UX_GLOBALS (); |
c906108c | 1802 | #endif |
c5aa993b JM |
1803 | } |
1804 | ||
1805 | (*objfile->sf->sym_init) (objfile); | |
b9caf505 | 1806 | clear_complaints (&symfile_complaints, 1, 1); |
c5aa993b JM |
1807 | /* The "mainline" parameter is a hideous hack; I think leaving it |
1808 | zero is OK since dbxread.c also does what it needs to do if | |
1809 | objfile->global_psymbols.size is 0. */ | |
96baa820 | 1810 | (*objfile->sf->sym_read) (objfile, 0); |
c5aa993b JM |
1811 | if (!have_partial_symbols () && !have_full_symbols ()) |
1812 | { | |
1813 | wrap_here (""); | |
1814 | printf_filtered ("(no debugging symbols found)\n"); | |
1815 | wrap_here (""); | |
1816 | } | |
1817 | objfile->flags |= OBJF_SYMS; | |
1818 | ||
1819 | /* We're done reading the symbol file; finish off complaints. */ | |
b9caf505 | 1820 | clear_complaints (&symfile_complaints, 0, 1); |
c906108c | 1821 | |
c5aa993b JM |
1822 | /* Getting new symbols may change our opinion about what is |
1823 | frameless. */ | |
c906108c | 1824 | |
c5aa993b | 1825 | reinit_frame_cache (); |
c906108c | 1826 | |
c5aa993b JM |
1827 | /* Discard cleanups as symbol reading was successful. */ |
1828 | discard_cleanups (old_cleanups); | |
c906108c | 1829 | |
c5aa993b JM |
1830 | /* If the mtime has changed between the time we set new_modtime |
1831 | and now, we *want* this to be out of date, so don't call stat | |
1832 | again now. */ | |
1833 | objfile->mtime = new_modtime; | |
1834 | reread_one = 1; | |
c906108c | 1835 | |
c5aa993b | 1836 | /* Call this after reading in a new symbol table to give target |
38c2ef12 | 1837 | dependent code a crack at the new symbols. For instance, this |
c5aa993b JM |
1838 | could be used to update the values of target-specific symbols GDB |
1839 | needs to keep track of (such as _sigtramp, or whatever). */ | |
c906108c | 1840 | |
c5aa993b JM |
1841 | TARGET_SYMFILE_POSTREAD (objfile); |
1842 | } | |
c906108c SS |
1843 | } |
1844 | } | |
c906108c SS |
1845 | |
1846 | if (reread_one) | |
1847 | clear_symtab_users (); | |
1848 | } | |
c906108c SS |
1849 | \f |
1850 | ||
c5aa993b JM |
1851 | |
1852 | typedef struct | |
1853 | { | |
1854 | char *ext; | |
c906108c | 1855 | enum language lang; |
c5aa993b JM |
1856 | } |
1857 | filename_language; | |
c906108c | 1858 | |
c5aa993b | 1859 | static filename_language *filename_language_table; |
c906108c SS |
1860 | static int fl_table_size, fl_table_next; |
1861 | ||
1862 | static void | |
fba45db2 | 1863 | add_filename_language (char *ext, enum language lang) |
c906108c SS |
1864 | { |
1865 | if (fl_table_next >= fl_table_size) | |
1866 | { | |
1867 | fl_table_size += 10; | |
25bf3106 PM |
1868 | filename_language_table = |
1869 | xrealloc (filename_language_table, | |
1870 | fl_table_size * sizeof (*filename_language_table)); | |
c906108c SS |
1871 | } |
1872 | ||
4fcf66da | 1873 | filename_language_table[fl_table_next].ext = xstrdup (ext); |
c906108c SS |
1874 | filename_language_table[fl_table_next].lang = lang; |
1875 | fl_table_next++; | |
1876 | } | |
1877 | ||
1878 | static char *ext_args; | |
1879 | ||
1880 | static void | |
fba45db2 | 1881 | set_ext_lang_command (char *args, int from_tty) |
c906108c SS |
1882 | { |
1883 | int i; | |
1884 | char *cp = ext_args; | |
1885 | enum language lang; | |
1886 | ||
1887 | /* First arg is filename extension, starting with '.' */ | |
1888 | if (*cp != '.') | |
1889 | error ("'%s': Filename extension must begin with '.'", ext_args); | |
1890 | ||
1891 | /* Find end of first arg. */ | |
c5aa993b | 1892 | while (*cp && !isspace (*cp)) |
c906108c SS |
1893 | cp++; |
1894 | ||
1895 | if (*cp == '\0') | |
1896 | error ("'%s': two arguments required -- filename extension and language", | |
1897 | ext_args); | |
1898 | ||
1899 | /* Null-terminate first arg */ | |
c5aa993b | 1900 | *cp++ = '\0'; |
c906108c SS |
1901 | |
1902 | /* Find beginning of second arg, which should be a source language. */ | |
1903 | while (*cp && isspace (*cp)) | |
1904 | cp++; | |
1905 | ||
1906 | if (*cp == '\0') | |
1907 | error ("'%s': two arguments required -- filename extension and language", | |
1908 | ext_args); | |
1909 | ||
1910 | /* Lookup the language from among those we know. */ | |
1911 | lang = language_enum (cp); | |
1912 | ||
1913 | /* Now lookup the filename extension: do we already know it? */ | |
1914 | for (i = 0; i < fl_table_next; i++) | |
1915 | if (0 == strcmp (ext_args, filename_language_table[i].ext)) | |
1916 | break; | |
1917 | ||
1918 | if (i >= fl_table_next) | |
1919 | { | |
1920 | /* new file extension */ | |
1921 | add_filename_language (ext_args, lang); | |
1922 | } | |
1923 | else | |
1924 | { | |
1925 | /* redefining a previously known filename extension */ | |
1926 | ||
1927 | /* if (from_tty) */ | |
1928 | /* query ("Really make files of type %s '%s'?", */ | |
1929 | /* ext_args, language_str (lang)); */ | |
1930 | ||
b8c9b27d | 1931 | xfree (filename_language_table[i].ext); |
4fcf66da | 1932 | filename_language_table[i].ext = xstrdup (ext_args); |
c906108c SS |
1933 | filename_language_table[i].lang = lang; |
1934 | } | |
1935 | } | |
1936 | ||
1937 | static void | |
fba45db2 | 1938 | info_ext_lang_command (char *args, int from_tty) |
c906108c SS |
1939 | { |
1940 | int i; | |
1941 | ||
1942 | printf_filtered ("Filename extensions and the languages they represent:"); | |
1943 | printf_filtered ("\n\n"); | |
1944 | for (i = 0; i < fl_table_next; i++) | |
c5aa993b JM |
1945 | printf_filtered ("\t%s\t- %s\n", |
1946 | filename_language_table[i].ext, | |
c906108c SS |
1947 | language_str (filename_language_table[i].lang)); |
1948 | } | |
1949 | ||
1950 | static void | |
fba45db2 | 1951 | init_filename_language_table (void) |
c906108c SS |
1952 | { |
1953 | if (fl_table_size == 0) /* protect against repetition */ | |
1954 | { | |
1955 | fl_table_size = 20; | |
1956 | fl_table_next = 0; | |
c5aa993b | 1957 | filename_language_table = |
c906108c | 1958 | xmalloc (fl_table_size * sizeof (*filename_language_table)); |
c5aa993b JM |
1959 | add_filename_language (".c", language_c); |
1960 | add_filename_language (".C", language_cplus); | |
1961 | add_filename_language (".cc", language_cplus); | |
1962 | add_filename_language (".cp", language_cplus); | |
1963 | add_filename_language (".cpp", language_cplus); | |
1964 | add_filename_language (".cxx", language_cplus); | |
1965 | add_filename_language (".c++", language_cplus); | |
1966 | add_filename_language (".java", language_java); | |
c906108c | 1967 | add_filename_language (".class", language_java); |
db034ac5 AC |
1968 | /* OBSOLETE add_filename_language (".ch", language_chill); */ |
1969 | /* OBSOLETE add_filename_language (".c186", language_chill); */ | |
1970 | /* OBSOLETE add_filename_language (".c286", language_chill); */ | |
da2cf7e0 | 1971 | add_filename_language (".m", language_objc); |
c5aa993b JM |
1972 | add_filename_language (".f", language_fortran); |
1973 | add_filename_language (".F", language_fortran); | |
1974 | add_filename_language (".s", language_asm); | |
1975 | add_filename_language (".S", language_asm); | |
c6fd39cd PM |
1976 | add_filename_language (".pas", language_pascal); |
1977 | add_filename_language (".p", language_pascal); | |
1978 | add_filename_language (".pp", language_pascal); | |
c906108c SS |
1979 | } |
1980 | } | |
1981 | ||
1982 | enum language | |
fba45db2 | 1983 | deduce_language_from_filename (char *filename) |
c906108c SS |
1984 | { |
1985 | int i; | |
1986 | char *cp; | |
1987 | ||
1988 | if (filename != NULL) | |
1989 | if ((cp = strrchr (filename, '.')) != NULL) | |
1990 | for (i = 0; i < fl_table_next; i++) | |
1991 | if (strcmp (cp, filename_language_table[i].ext) == 0) | |
1992 | return filename_language_table[i].lang; | |
1993 | ||
1994 | return language_unknown; | |
1995 | } | |
1996 | \f | |
1997 | /* allocate_symtab: | |
1998 | ||
1999 | Allocate and partly initialize a new symbol table. Return a pointer | |
2000 | to it. error() if no space. | |
2001 | ||
2002 | Caller must set these fields: | |
c5aa993b JM |
2003 | LINETABLE(symtab) |
2004 | symtab->blockvector | |
2005 | symtab->dirname | |
2006 | symtab->free_code | |
2007 | symtab->free_ptr | |
2008 | possibly free_named_symtabs (symtab->filename); | |
c906108c SS |
2009 | */ |
2010 | ||
2011 | struct symtab * | |
fba45db2 | 2012 | allocate_symtab (char *filename, struct objfile *objfile) |
c906108c SS |
2013 | { |
2014 | register struct symtab *symtab; | |
2015 | ||
2016 | symtab = (struct symtab *) | |
c5aa993b | 2017 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct symtab)); |
c906108c | 2018 | memset (symtab, 0, sizeof (*symtab)); |
c5aa993b JM |
2019 | symtab->filename = obsavestring (filename, strlen (filename), |
2020 | &objfile->symbol_obstack); | |
2021 | symtab->fullname = NULL; | |
2022 | symtab->language = deduce_language_from_filename (filename); | |
2023 | symtab->debugformat = obsavestring ("unknown", 7, | |
2024 | &objfile->symbol_obstack); | |
c906108c SS |
2025 | |
2026 | /* Hook it to the objfile it comes from */ | |
2027 | ||
c5aa993b JM |
2028 | symtab->objfile = objfile; |
2029 | symtab->next = objfile->symtabs; | |
2030 | objfile->symtabs = symtab; | |
c906108c SS |
2031 | |
2032 | /* FIXME: This should go away. It is only defined for the Z8000, | |
2033 | and the Z8000 definition of this macro doesn't have anything to | |
2034 | do with the now-nonexistent EXTRA_SYMTAB_INFO macro, it's just | |
2035 | here for convenience. */ | |
2036 | #ifdef INIT_EXTRA_SYMTAB_INFO | |
2037 | INIT_EXTRA_SYMTAB_INFO (symtab); | |
2038 | #endif | |
2039 | ||
2040 | return (symtab); | |
2041 | } | |
2042 | ||
2043 | struct partial_symtab * | |
fba45db2 | 2044 | allocate_psymtab (char *filename, struct objfile *objfile) |
c906108c SS |
2045 | { |
2046 | struct partial_symtab *psymtab; | |
2047 | ||
c5aa993b | 2048 | if (objfile->free_psymtabs) |
c906108c | 2049 | { |
c5aa993b JM |
2050 | psymtab = objfile->free_psymtabs; |
2051 | objfile->free_psymtabs = psymtab->next; | |
c906108c SS |
2052 | } |
2053 | else | |
2054 | psymtab = (struct partial_symtab *) | |
c5aa993b | 2055 | obstack_alloc (&objfile->psymbol_obstack, |
c906108c SS |
2056 | sizeof (struct partial_symtab)); |
2057 | ||
2058 | memset (psymtab, 0, sizeof (struct partial_symtab)); | |
c5aa993b JM |
2059 | psymtab->filename = obsavestring (filename, strlen (filename), |
2060 | &objfile->psymbol_obstack); | |
2061 | psymtab->symtab = NULL; | |
c906108c SS |
2062 | |
2063 | /* Prepend it to the psymtab list for the objfile it belongs to. | |
2064 | Psymtabs are searched in most recent inserted -> least recent | |
2065 | inserted order. */ | |
2066 | ||
c5aa993b JM |
2067 | psymtab->objfile = objfile; |
2068 | psymtab->next = objfile->psymtabs; | |
2069 | objfile->psymtabs = psymtab; | |
c906108c SS |
2070 | #if 0 |
2071 | { | |
2072 | struct partial_symtab **prev_pst; | |
c5aa993b JM |
2073 | psymtab->objfile = objfile; |
2074 | psymtab->next = NULL; | |
2075 | prev_pst = &(objfile->psymtabs); | |
c906108c | 2076 | while ((*prev_pst) != NULL) |
c5aa993b | 2077 | prev_pst = &((*prev_pst)->next); |
c906108c | 2078 | (*prev_pst) = psymtab; |
c5aa993b | 2079 | } |
c906108c | 2080 | #endif |
c5aa993b | 2081 | |
c906108c SS |
2082 | return (psymtab); |
2083 | } | |
2084 | ||
2085 | void | |
fba45db2 | 2086 | discard_psymtab (struct partial_symtab *pst) |
c906108c SS |
2087 | { |
2088 | struct partial_symtab **prev_pst; | |
2089 | ||
2090 | /* From dbxread.c: | |
2091 | Empty psymtabs happen as a result of header files which don't | |
2092 | have any symbols in them. There can be a lot of them. But this | |
2093 | check is wrong, in that a psymtab with N_SLINE entries but | |
2094 | nothing else is not empty, but we don't realize that. Fixing | |
2095 | that without slowing things down might be tricky. */ | |
2096 | ||
2097 | /* First, snip it out of the psymtab chain */ | |
2098 | ||
2099 | prev_pst = &(pst->objfile->psymtabs); | |
2100 | while ((*prev_pst) != pst) | |
2101 | prev_pst = &((*prev_pst)->next); | |
2102 | (*prev_pst) = pst->next; | |
2103 | ||
2104 | /* Next, put it on a free list for recycling */ | |
2105 | ||
2106 | pst->next = pst->objfile->free_psymtabs; | |
2107 | pst->objfile->free_psymtabs = pst; | |
2108 | } | |
c906108c | 2109 | \f |
c5aa993b | 2110 | |
c906108c SS |
2111 | /* Reset all data structures in gdb which may contain references to symbol |
2112 | table data. */ | |
2113 | ||
2114 | void | |
fba45db2 | 2115 | clear_symtab_users (void) |
c906108c SS |
2116 | { |
2117 | /* Someday, we should do better than this, by only blowing away | |
2118 | the things that really need to be blown. */ | |
2119 | clear_value_history (); | |
2120 | clear_displays (); | |
2121 | clear_internalvars (); | |
2122 | breakpoint_re_set (); | |
2123 | set_default_breakpoint (0, 0, 0, 0); | |
0378c332 | 2124 | clear_current_source_symtab_and_line (); |
c906108c | 2125 | clear_pc_function_cache (); |
11cf8741 JM |
2126 | if (target_new_objfile_hook) |
2127 | target_new_objfile_hook (NULL); | |
c906108c SS |
2128 | } |
2129 | ||
74b7792f AC |
2130 | static void |
2131 | clear_symtab_users_cleanup (void *ignore) | |
2132 | { | |
2133 | clear_symtab_users (); | |
2134 | } | |
2135 | ||
c906108c SS |
2136 | /* clear_symtab_users_once: |
2137 | ||
2138 | This function is run after symbol reading, or from a cleanup. | |
2139 | If an old symbol table was obsoleted, the old symbol table | |
2140 | has been blown away, but the other GDB data structures that may | |
2141 | reference it have not yet been cleared or re-directed. (The old | |
2142 | symtab was zapped, and the cleanup queued, in free_named_symtab() | |
2143 | below.) | |
2144 | ||
2145 | This function can be queued N times as a cleanup, or called | |
2146 | directly; it will do all the work the first time, and then will be a | |
2147 | no-op until the next time it is queued. This works by bumping a | |
2148 | counter at queueing time. Much later when the cleanup is run, or at | |
2149 | the end of symbol processing (in case the cleanup is discarded), if | |
2150 | the queued count is greater than the "done-count", we do the work | |
2151 | and set the done-count to the queued count. If the queued count is | |
2152 | less than or equal to the done-count, we just ignore the call. This | |
2153 | is needed because reading a single .o file will often replace many | |
2154 | symtabs (one per .h file, for example), and we don't want to reset | |
2155 | the breakpoints N times in the user's face. | |
2156 | ||
2157 | The reason we both queue a cleanup, and call it directly after symbol | |
2158 | reading, is because the cleanup protects us in case of errors, but is | |
2159 | discarded if symbol reading is successful. */ | |
2160 | ||
2161 | #if 0 | |
2162 | /* FIXME: As free_named_symtabs is currently a big noop this function | |
2163 | is no longer needed. */ | |
a14ed312 | 2164 | static void clear_symtab_users_once (void); |
c906108c SS |
2165 | |
2166 | static int clear_symtab_users_queued; | |
2167 | static int clear_symtab_users_done; | |
2168 | ||
2169 | static void | |
fba45db2 | 2170 | clear_symtab_users_once (void) |
c906108c SS |
2171 | { |
2172 | /* Enforce once-per-`do_cleanups'-semantics */ | |
2173 | if (clear_symtab_users_queued <= clear_symtab_users_done) | |
2174 | return; | |
2175 | clear_symtab_users_done = clear_symtab_users_queued; | |
2176 | ||
2177 | clear_symtab_users (); | |
2178 | } | |
2179 | #endif | |
2180 | ||
2181 | /* Delete the specified psymtab, and any others that reference it. */ | |
2182 | ||
2183 | static void | |
fba45db2 | 2184 | cashier_psymtab (struct partial_symtab *pst) |
c906108c SS |
2185 | { |
2186 | struct partial_symtab *ps, *pprev = NULL; | |
2187 | int i; | |
2188 | ||
2189 | /* Find its previous psymtab in the chain */ | |
c5aa993b JM |
2190 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) |
2191 | { | |
2192 | if (ps == pst) | |
2193 | break; | |
2194 | pprev = ps; | |
2195 | } | |
c906108c | 2196 | |
c5aa993b JM |
2197 | if (ps) |
2198 | { | |
2199 | /* Unhook it from the chain. */ | |
2200 | if (ps == pst->objfile->psymtabs) | |
2201 | pst->objfile->psymtabs = ps->next; | |
2202 | else | |
2203 | pprev->next = ps->next; | |
2204 | ||
2205 | /* FIXME, we can't conveniently deallocate the entries in the | |
2206 | partial_symbol lists (global_psymbols/static_psymbols) that | |
2207 | this psymtab points to. These just take up space until all | |
2208 | the psymtabs are reclaimed. Ditto the dependencies list and | |
2209 | filename, which are all in the psymbol_obstack. */ | |
2210 | ||
2211 | /* We need to cashier any psymtab that has this one as a dependency... */ | |
2212 | again: | |
2213 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) | |
2214 | { | |
2215 | for (i = 0; i < ps->number_of_dependencies; i++) | |
2216 | { | |
2217 | if (ps->dependencies[i] == pst) | |
2218 | { | |
2219 | cashier_psymtab (ps); | |
2220 | goto again; /* Must restart, chain has been munged. */ | |
2221 | } | |
2222 | } | |
c906108c | 2223 | } |
c906108c | 2224 | } |
c906108c SS |
2225 | } |
2226 | ||
2227 | /* If a symtab or psymtab for filename NAME is found, free it along | |
2228 | with any dependent breakpoints, displays, etc. | |
2229 | Used when loading new versions of object modules with the "add-file" | |
2230 | command. This is only called on the top-level symtab or psymtab's name; | |
2231 | it is not called for subsidiary files such as .h files. | |
2232 | ||
2233 | Return value is 1 if we blew away the environment, 0 if not. | |
7e73cedf | 2234 | FIXME. The return value appears to never be used. |
c906108c SS |
2235 | |
2236 | FIXME. I think this is not the best way to do this. We should | |
2237 | work on being gentler to the environment while still cleaning up | |
2238 | all stray pointers into the freed symtab. */ | |
2239 | ||
2240 | int | |
fba45db2 | 2241 | free_named_symtabs (char *name) |
c906108c SS |
2242 | { |
2243 | #if 0 | |
2244 | /* FIXME: With the new method of each objfile having it's own | |
2245 | psymtab list, this function needs serious rethinking. In particular, | |
2246 | why was it ever necessary to toss psymtabs with specific compilation | |
2247 | unit filenames, as opposed to all psymtabs from a particular symbol | |
2248 | file? -- fnf | |
2249 | Well, the answer is that some systems permit reloading of particular | |
2250 | compilation units. We want to blow away any old info about these | |
2251 | compilation units, regardless of which objfiles they arrived in. --gnu. */ | |
2252 | ||
2253 | register struct symtab *s; | |
2254 | register struct symtab *prev; | |
2255 | register struct partial_symtab *ps; | |
2256 | struct blockvector *bv; | |
2257 | int blewit = 0; | |
2258 | ||
2259 | /* We only wack things if the symbol-reload switch is set. */ | |
2260 | if (!symbol_reloading) | |
2261 | return 0; | |
2262 | ||
2263 | /* Some symbol formats have trouble providing file names... */ | |
2264 | if (name == 0 || *name == '\0') | |
2265 | return 0; | |
2266 | ||
2267 | /* Look for a psymtab with the specified name. */ | |
2268 | ||
2269 | again2: | |
c5aa993b JM |
2270 | for (ps = partial_symtab_list; ps; ps = ps->next) |
2271 | { | |
2272 | if (STREQ (name, ps->filename)) | |
2273 | { | |
2274 | cashier_psymtab (ps); /* Blow it away...and its little dog, too. */ | |
2275 | goto again2; /* Must restart, chain has been munged */ | |
2276 | } | |
c906108c | 2277 | } |
c906108c SS |
2278 | |
2279 | /* Look for a symtab with the specified name. */ | |
2280 | ||
2281 | for (s = symtab_list; s; s = s->next) | |
2282 | { | |
2283 | if (STREQ (name, s->filename)) | |
2284 | break; | |
2285 | prev = s; | |
2286 | } | |
2287 | ||
2288 | if (s) | |
2289 | { | |
2290 | if (s == symtab_list) | |
2291 | symtab_list = s->next; | |
2292 | else | |
2293 | prev->next = s->next; | |
2294 | ||
2295 | /* For now, queue a delete for all breakpoints, displays, etc., whether | |
c5aa993b JM |
2296 | or not they depend on the symtab being freed. This should be |
2297 | changed so that only those data structures affected are deleted. */ | |
c906108c SS |
2298 | |
2299 | /* But don't delete anything if the symtab is empty. | |
c5aa993b JM |
2300 | This test is necessary due to a bug in "dbxread.c" that |
2301 | causes empty symtabs to be created for N_SO symbols that | |
2302 | contain the pathname of the object file. (This problem | |
2303 | has been fixed in GDB 3.9x). */ | |
c906108c SS |
2304 | |
2305 | bv = BLOCKVECTOR (s); | |
2306 | if (BLOCKVECTOR_NBLOCKS (bv) > 2 | |
2307 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) | |
2308 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK))) | |
2309 | { | |
b9caf505 AC |
2310 | complaint (&symfile_complaints, "Replacing old symbols for `%s'", |
2311 | name); | |
c906108c SS |
2312 | clear_symtab_users_queued++; |
2313 | make_cleanup (clear_symtab_users_once, 0); | |
2314 | blewit = 1; | |
c5aa993b JM |
2315 | } |
2316 | else | |
2317 | { | |
b9caf505 AC |
2318 | complaint (&symfile_complaints, "Empty symbol table found for `%s'", |
2319 | name); | |
c906108c SS |
2320 | } |
2321 | ||
2322 | free_symtab (s); | |
2323 | } | |
2324 | else | |
2325 | { | |
2326 | /* It is still possible that some breakpoints will be affected | |
c5aa993b JM |
2327 | even though no symtab was found, since the file might have |
2328 | been compiled without debugging, and hence not be associated | |
2329 | with a symtab. In order to handle this correctly, we would need | |
2330 | to keep a list of text address ranges for undebuggable files. | |
2331 | For now, we do nothing, since this is a fairly obscure case. */ | |
c906108c SS |
2332 | ; |
2333 | } | |
2334 | ||
2335 | /* FIXME, what about the minimal symbol table? */ | |
2336 | return blewit; | |
2337 | #else | |
2338 | return (0); | |
2339 | #endif | |
2340 | } | |
2341 | \f | |
2342 | /* Allocate and partially fill a partial symtab. It will be | |
2343 | completely filled at the end of the symbol list. | |
2344 | ||
d4f3574e | 2345 | FILENAME is the name of the symbol-file we are reading from. */ |
c906108c SS |
2346 | |
2347 | struct partial_symtab * | |
fba45db2 KB |
2348 | start_psymtab_common (struct objfile *objfile, |
2349 | struct section_offsets *section_offsets, char *filename, | |
2350 | CORE_ADDR textlow, struct partial_symbol **global_syms, | |
2351 | struct partial_symbol **static_syms) | |
c906108c SS |
2352 | { |
2353 | struct partial_symtab *psymtab; | |
2354 | ||
2355 | psymtab = allocate_psymtab (filename, objfile); | |
c5aa993b JM |
2356 | psymtab->section_offsets = section_offsets; |
2357 | psymtab->textlow = textlow; | |
2358 | psymtab->texthigh = psymtab->textlow; /* default */ | |
2359 | psymtab->globals_offset = global_syms - objfile->global_psymbols.list; | |
2360 | psymtab->statics_offset = static_syms - objfile->static_psymbols.list; | |
c906108c SS |
2361 | return (psymtab); |
2362 | } | |
2363 | \f | |
2364 | /* Add a symbol with a long value to a psymtab. | |
2365 | Since one arg is a struct, we pass in a ptr and deref it (sigh). */ | |
2366 | ||
2367 | void | |
fba45db2 KB |
2368 | add_psymbol_to_list (char *name, int namelength, namespace_enum namespace, |
2369 | enum address_class class, | |
2370 | struct psymbol_allocation_list *list, long val, /* Value as a long */ | |
2371 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ | |
2372 | enum language language, struct objfile *objfile) | |
c906108c SS |
2373 | { |
2374 | register struct partial_symbol *psym; | |
2375 | char *buf = alloca (namelength + 1); | |
2376 | /* psymbol is static so that there will be no uninitialized gaps in the | |
2377 | structure which might contain random data, causing cache misses in | |
2378 | bcache. */ | |
2379 | static struct partial_symbol psymbol; | |
2380 | ||
2381 | /* Create local copy of the partial symbol */ | |
2382 | memcpy (buf, name, namelength); | |
2383 | buf[namelength] = '\0'; | |
af5f3db6 | 2384 | SYMBOL_NAME (&psymbol) = bcache (buf, namelength + 1, objfile->psymbol_cache); |
c906108c SS |
2385 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ |
2386 | if (val != 0) | |
2387 | { | |
2388 | SYMBOL_VALUE (&psymbol) = val; | |
2389 | } | |
2390 | else | |
2391 | { | |
2392 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; | |
2393 | } | |
2394 | SYMBOL_SECTION (&psymbol) = 0; | |
2395 | SYMBOL_LANGUAGE (&psymbol) = language; | |
2396 | PSYMBOL_NAMESPACE (&psymbol) = namespace; | |
2397 | PSYMBOL_CLASS (&psymbol) = class; | |
2398 | SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol, language); | |
2399 | ||
2400 | /* Stash the partial symbol away in the cache */ | |
af5f3db6 | 2401 | psym = bcache (&psymbol, sizeof (struct partial_symbol), objfile->psymbol_cache); |
c906108c SS |
2402 | |
2403 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ | |
2404 | if (list->next >= list->list + list->size) | |
2405 | { | |
2406 | extend_psymbol_list (list, objfile); | |
2407 | } | |
2408 | *list->next++ = psym; | |
2409 | OBJSTAT (objfile, n_psyms++); | |
2410 | } | |
2411 | ||
2412 | /* Add a symbol with a long value to a psymtab. This differs from | |
2413 | * add_psymbol_to_list above in taking both a mangled and a demangled | |
2414 | * name. */ | |
2415 | ||
2416 | void | |
fba45db2 KB |
2417 | add_psymbol_with_dem_name_to_list (char *name, int namelength, char *dem_name, |
2418 | int dem_namelength, namespace_enum namespace, | |
2419 | enum address_class class, | |
2420 | struct psymbol_allocation_list *list, long val, /* Value as a long */ | |
2421 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ | |
2422 | enum language language, | |
2423 | struct objfile *objfile) | |
c906108c SS |
2424 | { |
2425 | register struct partial_symbol *psym; | |
2426 | char *buf = alloca (namelength + 1); | |
2427 | /* psymbol is static so that there will be no uninitialized gaps in the | |
2428 | structure which might contain random data, causing cache misses in | |
2429 | bcache. */ | |
2430 | static struct partial_symbol psymbol; | |
2431 | ||
2432 | /* Create local copy of the partial symbol */ | |
2433 | ||
2434 | memcpy (buf, name, namelength); | |
2435 | buf[namelength] = '\0'; | |
af5f3db6 | 2436 | SYMBOL_NAME (&psymbol) = bcache (buf, namelength + 1, objfile->psymbol_cache); |
c906108c SS |
2437 | |
2438 | buf = alloca (dem_namelength + 1); | |
2439 | memcpy (buf, dem_name, dem_namelength); | |
2440 | buf[dem_namelength] = '\0'; | |
c5aa993b | 2441 | |
c906108c SS |
2442 | switch (language) |
2443 | { | |
c5aa993b JM |
2444 | case language_c: |
2445 | case language_cplus: | |
2446 | SYMBOL_CPLUS_DEMANGLED_NAME (&psymbol) = | |
af5f3db6 | 2447 | bcache (buf, dem_namelength + 1, objfile->psymbol_cache); |
c5aa993b | 2448 | break; |
db034ac5 AC |
2449 | /* OBSOLETE case language_chill: */ |
2450 | /* OBSOLETE SYMBOL_CHILL_DEMANGLED_NAME (&psymbol) = */ | |
2451 | /* OBSOLETE bcache (buf, dem_namelength + 1, objfile->psymbol_cache); */ | |
c5aa993b | 2452 | |
c906108c SS |
2453 | /* FIXME What should be done for the default case? Ignoring for now. */ |
2454 | } | |
2455 | ||
2456 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ | |
2457 | if (val != 0) | |
2458 | { | |
2459 | SYMBOL_VALUE (&psymbol) = val; | |
2460 | } | |
2461 | else | |
2462 | { | |
2463 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; | |
2464 | } | |
2465 | SYMBOL_SECTION (&psymbol) = 0; | |
2466 | SYMBOL_LANGUAGE (&psymbol) = language; | |
2467 | PSYMBOL_NAMESPACE (&psymbol) = namespace; | |
2468 | PSYMBOL_CLASS (&psymbol) = class; | |
2469 | SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol, language); | |
2470 | ||
2471 | /* Stash the partial symbol away in the cache */ | |
af5f3db6 | 2472 | psym = bcache (&psymbol, sizeof (struct partial_symbol), objfile->psymbol_cache); |
c906108c SS |
2473 | |
2474 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ | |
2475 | if (list->next >= list->list + list->size) | |
2476 | { | |
2477 | extend_psymbol_list (list, objfile); | |
2478 | } | |
2479 | *list->next++ = psym; | |
2480 | OBJSTAT (objfile, n_psyms++); | |
2481 | } | |
2482 | ||
2483 | /* Initialize storage for partial symbols. */ | |
2484 | ||
2485 | void | |
fba45db2 | 2486 | init_psymbol_list (struct objfile *objfile, int total_symbols) |
c906108c SS |
2487 | { |
2488 | /* Free any previously allocated psymbol lists. */ | |
c5aa993b JM |
2489 | |
2490 | if (objfile->global_psymbols.list) | |
c906108c | 2491 | { |
aac7f4ea | 2492 | xmfree (objfile->md, (PTR) objfile->global_psymbols.list); |
c906108c | 2493 | } |
c5aa993b | 2494 | if (objfile->static_psymbols.list) |
c906108c | 2495 | { |
aac7f4ea | 2496 | xmfree (objfile->md, (PTR) objfile->static_psymbols.list); |
c906108c | 2497 | } |
c5aa993b | 2498 | |
c906108c SS |
2499 | /* Current best guess is that approximately a twentieth |
2500 | of the total symbols (in a debugging file) are global or static | |
2501 | oriented symbols */ | |
c906108c | 2502 | |
c5aa993b JM |
2503 | objfile->global_psymbols.size = total_symbols / 10; |
2504 | objfile->static_psymbols.size = total_symbols / 10; | |
2505 | ||
2506 | if (objfile->global_psymbols.size > 0) | |
c906108c | 2507 | { |
c5aa993b JM |
2508 | objfile->global_psymbols.next = |
2509 | objfile->global_psymbols.list = (struct partial_symbol **) | |
2510 | xmmalloc (objfile->md, (objfile->global_psymbols.size | |
2511 | * sizeof (struct partial_symbol *))); | |
c906108c | 2512 | } |
c5aa993b | 2513 | if (objfile->static_psymbols.size > 0) |
c906108c | 2514 | { |
c5aa993b JM |
2515 | objfile->static_psymbols.next = |
2516 | objfile->static_psymbols.list = (struct partial_symbol **) | |
2517 | xmmalloc (objfile->md, (objfile->static_psymbols.size | |
2518 | * sizeof (struct partial_symbol *))); | |
c906108c SS |
2519 | } |
2520 | } | |
2521 | ||
2522 | /* OVERLAYS: | |
2523 | The following code implements an abstraction for debugging overlay sections. | |
2524 | ||
2525 | The target model is as follows: | |
2526 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2527 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2528 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2529 | sections, one by one, from the load address into the VMA address. |
c906108c | 2530 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2531 | sections should be considered to be mapped from the VMA to the LMA. |
2532 | This information is used for symbol lookup, and memory read/write. | |
2533 | For instance, if a section has been mapped then its contents | |
2534 | should be read from the VMA, otherwise from the LMA. | |
c906108c SS |
2535 | |
2536 | Two levels of debugger support for overlays are available. One is | |
2537 | "manual", in which the debugger relies on the user to tell it which | |
2538 | overlays are currently mapped. This level of support is | |
2539 | implemented entirely in the core debugger, and the information about | |
2540 | whether a section is mapped is kept in the objfile->obj_section table. | |
2541 | ||
2542 | The second level of support is "automatic", and is only available if | |
2543 | the target-specific code provides functionality to read the target's | |
2544 | overlay mapping table, and translate its contents for the debugger | |
2545 | (by updating the mapped state information in the obj_section tables). | |
2546 | ||
2547 | The interface is as follows: | |
c5aa993b JM |
2548 | User commands: |
2549 | overlay map <name> -- tell gdb to consider this section mapped | |
2550 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2551 | overlay list -- list the sections that GDB thinks are mapped | |
2552 | overlay read-target -- get the target's state of what's mapped | |
2553 | overlay off/manual/auto -- set overlay debugging state | |
2554 | Functional interface: | |
2555 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2556 | section, return that section. | |
2557 | find_pc_overlay(pc): find any overlay section that contains | |
2558 | the pc, either in its VMA or its LMA | |
2559 | overlay_is_mapped(sect): true if overlay is marked as mapped | |
2560 | section_is_overlay(sect): true if section's VMA != LMA | |
2561 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2562 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 2563 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
2564 | overlay_mapped_address(...): map an address from section's LMA to VMA |
2565 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2566 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2567 | either in VMA or LMA depending on whether | |
2568 | the symbol's section is currently mapped | |
c906108c SS |
2569 | */ |
2570 | ||
2571 | /* Overlay debugging state: */ | |
2572 | ||
d874f1e2 | 2573 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c906108c SS |
2574 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state */ |
2575 | ||
2576 | /* Target vector for refreshing overlay mapped state */ | |
a14ed312 | 2577 | static void simple_overlay_update (struct obj_section *); |
507f3c78 | 2578 | void (*target_overlay_update) (struct obj_section *) = simple_overlay_update; |
c906108c SS |
2579 | |
2580 | /* Function: section_is_overlay (SECTION) | |
2581 | Returns true if SECTION has VMA not equal to LMA, ie. | |
2582 | SECTION is loaded at an address different from where it will "run". */ | |
2583 | ||
2584 | int | |
fba45db2 | 2585 | section_is_overlay (asection *section) |
c906108c | 2586 | { |
fbd35540 MS |
2587 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ |
2588 | ||
c906108c SS |
2589 | if (overlay_debugging) |
2590 | if (section && section->lma != 0 && | |
2591 | section->vma != section->lma) | |
2592 | return 1; | |
2593 | ||
2594 | return 0; | |
2595 | } | |
2596 | ||
2597 | /* Function: overlay_invalidate_all (void) | |
2598 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
2599 | ||
2600 | static void | |
fba45db2 | 2601 | overlay_invalidate_all (void) |
c906108c | 2602 | { |
c5aa993b | 2603 | struct objfile *objfile; |
c906108c SS |
2604 | struct obj_section *sect; |
2605 | ||
2606 | ALL_OBJSECTIONS (objfile, sect) | |
2607 | if (section_is_overlay (sect->the_bfd_section)) | |
c5aa993b | 2608 | sect->ovly_mapped = -1; |
c906108c SS |
2609 | } |
2610 | ||
2611 | /* Function: overlay_is_mapped (SECTION) | |
2612 | Returns true if section is an overlay, and is currently mapped. | |
2613 | Private: public access is thru function section_is_mapped. | |
2614 | ||
2615 | Access to the ovly_mapped flag is restricted to this function, so | |
2616 | that we can do automatic update. If the global flag | |
2617 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
2618 | overlay_invalidate_all. If the mapped state of the particular | |
2619 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
2620 | ||
c5aa993b | 2621 | static int |
fba45db2 | 2622 | overlay_is_mapped (struct obj_section *osect) |
c906108c SS |
2623 | { |
2624 | if (osect == 0 || !section_is_overlay (osect->the_bfd_section)) | |
2625 | return 0; | |
2626 | ||
c5aa993b | 2627 | switch (overlay_debugging) |
c906108c SS |
2628 | { |
2629 | default: | |
d874f1e2 | 2630 | case ovly_off: |
c5aa993b | 2631 | return 0; /* overlay debugging off */ |
d874f1e2 | 2632 | case ovly_auto: /* overlay debugging automatic */ |
c906108c | 2633 | /* Unles there is a target_overlay_update function, |
c5aa993b | 2634 | there's really nothing useful to do here (can't really go auto) */ |
c906108c SS |
2635 | if (target_overlay_update) |
2636 | { | |
2637 | if (overlay_cache_invalid) | |
2638 | { | |
2639 | overlay_invalidate_all (); | |
2640 | overlay_cache_invalid = 0; | |
2641 | } | |
2642 | if (osect->ovly_mapped == -1) | |
2643 | (*target_overlay_update) (osect); | |
2644 | } | |
2645 | /* fall thru to manual case */ | |
d874f1e2 | 2646 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
2647 | return osect->ovly_mapped == 1; |
2648 | } | |
2649 | } | |
2650 | ||
2651 | /* Function: section_is_mapped | |
2652 | Returns true if section is an overlay, and is currently mapped. */ | |
2653 | ||
2654 | int | |
fba45db2 | 2655 | section_is_mapped (asection *section) |
c906108c | 2656 | { |
c5aa993b | 2657 | struct objfile *objfile; |
c906108c SS |
2658 | struct obj_section *osect; |
2659 | ||
2660 | if (overlay_debugging) | |
2661 | if (section && section_is_overlay (section)) | |
2662 | ALL_OBJSECTIONS (objfile, osect) | |
2663 | if (osect->the_bfd_section == section) | |
c5aa993b | 2664 | return overlay_is_mapped (osect); |
c906108c SS |
2665 | |
2666 | return 0; | |
2667 | } | |
2668 | ||
2669 | /* Function: pc_in_unmapped_range | |
2670 | If PC falls into the lma range of SECTION, return true, else false. */ | |
2671 | ||
2672 | CORE_ADDR | |
fba45db2 | 2673 | pc_in_unmapped_range (CORE_ADDR pc, asection *section) |
c906108c | 2674 | { |
fbd35540 MS |
2675 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ |
2676 | ||
c906108c SS |
2677 | int size; |
2678 | ||
2679 | if (overlay_debugging) | |
2680 | if (section && section_is_overlay (section)) | |
2681 | { | |
2682 | size = bfd_get_section_size_before_reloc (section); | |
2683 | if (section->lma <= pc && pc < section->lma + size) | |
2684 | return 1; | |
2685 | } | |
2686 | return 0; | |
2687 | } | |
2688 | ||
2689 | /* Function: pc_in_mapped_range | |
2690 | If PC falls into the vma range of SECTION, return true, else false. */ | |
2691 | ||
2692 | CORE_ADDR | |
fba45db2 | 2693 | pc_in_mapped_range (CORE_ADDR pc, asection *section) |
c906108c | 2694 | { |
fbd35540 MS |
2695 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ |
2696 | ||
c906108c SS |
2697 | int size; |
2698 | ||
2699 | if (overlay_debugging) | |
2700 | if (section && section_is_overlay (section)) | |
2701 | { | |
2702 | size = bfd_get_section_size_before_reloc (section); | |
2703 | if (section->vma <= pc && pc < section->vma + size) | |
2704 | return 1; | |
2705 | } | |
2706 | return 0; | |
2707 | } | |
2708 | ||
9ec8e6a0 JB |
2709 | |
2710 | /* Return true if the mapped ranges of sections A and B overlap, false | |
2711 | otherwise. */ | |
2712 | int | |
2713 | sections_overlap (asection *a, asection *b) | |
2714 | { | |
fbd35540 MS |
2715 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ |
2716 | ||
9ec8e6a0 JB |
2717 | CORE_ADDR a_start = a->vma; |
2718 | CORE_ADDR a_end = a->vma + bfd_get_section_size_before_reloc (a); | |
2719 | CORE_ADDR b_start = b->vma; | |
2720 | CORE_ADDR b_end = b->vma + bfd_get_section_size_before_reloc (b); | |
2721 | ||
2722 | return (a_start < b_end && b_start < a_end); | |
2723 | } | |
2724 | ||
c906108c SS |
2725 | /* Function: overlay_unmapped_address (PC, SECTION) |
2726 | Returns the address corresponding to PC in the unmapped (load) range. | |
2727 | May be the same as PC. */ | |
2728 | ||
2729 | CORE_ADDR | |
fba45db2 | 2730 | overlay_unmapped_address (CORE_ADDR pc, asection *section) |
c906108c | 2731 | { |
fbd35540 MS |
2732 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ |
2733 | ||
c906108c SS |
2734 | if (overlay_debugging) |
2735 | if (section && section_is_overlay (section) && | |
2736 | pc_in_mapped_range (pc, section)) | |
2737 | return pc + section->lma - section->vma; | |
2738 | ||
2739 | return pc; | |
2740 | } | |
2741 | ||
2742 | /* Function: overlay_mapped_address (PC, SECTION) | |
2743 | Returns the address corresponding to PC in the mapped (runtime) range. | |
2744 | May be the same as PC. */ | |
2745 | ||
2746 | CORE_ADDR | |
fba45db2 | 2747 | overlay_mapped_address (CORE_ADDR pc, asection *section) |
c906108c | 2748 | { |
fbd35540 MS |
2749 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ |
2750 | ||
c906108c SS |
2751 | if (overlay_debugging) |
2752 | if (section && section_is_overlay (section) && | |
2753 | pc_in_unmapped_range (pc, section)) | |
2754 | return pc + section->vma - section->lma; | |
2755 | ||
2756 | return pc; | |
2757 | } | |
2758 | ||
2759 | ||
2760 | /* Function: symbol_overlayed_address | |
2761 | Return one of two addresses (relative to the VMA or to the LMA), | |
2762 | depending on whether the section is mapped or not. */ | |
2763 | ||
c5aa993b | 2764 | CORE_ADDR |
fba45db2 | 2765 | symbol_overlayed_address (CORE_ADDR address, asection *section) |
c906108c SS |
2766 | { |
2767 | if (overlay_debugging) | |
2768 | { | |
2769 | /* If the symbol has no section, just return its regular address. */ | |
2770 | if (section == 0) | |
2771 | return address; | |
2772 | /* If the symbol's section is not an overlay, just return its address */ | |
2773 | if (!section_is_overlay (section)) | |
2774 | return address; | |
2775 | /* If the symbol's section is mapped, just return its address */ | |
2776 | if (section_is_mapped (section)) | |
2777 | return address; | |
2778 | /* | |
2779 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
2780 | * then return its LOADED address rather than its vma address!! | |
2781 | */ | |
2782 | return overlay_unmapped_address (address, section); | |
2783 | } | |
2784 | return address; | |
2785 | } | |
2786 | ||
2787 | /* Function: find_pc_overlay (PC) | |
2788 | Return the best-match overlay section for PC: | |
2789 | If PC matches a mapped overlay section's VMA, return that section. | |
2790 | Else if PC matches an unmapped section's VMA, return that section. | |
2791 | Else if PC matches an unmapped section's LMA, return that section. */ | |
2792 | ||
2793 | asection * | |
fba45db2 | 2794 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 2795 | { |
c5aa993b | 2796 | struct objfile *objfile; |
c906108c SS |
2797 | struct obj_section *osect, *best_match = NULL; |
2798 | ||
2799 | if (overlay_debugging) | |
2800 | ALL_OBJSECTIONS (objfile, osect) | |
2801 | if (section_is_overlay (osect->the_bfd_section)) | |
c5aa993b JM |
2802 | { |
2803 | if (pc_in_mapped_range (pc, osect->the_bfd_section)) | |
2804 | { | |
2805 | if (overlay_is_mapped (osect)) | |
2806 | return osect->the_bfd_section; | |
2807 | else | |
2808 | best_match = osect; | |
2809 | } | |
2810 | else if (pc_in_unmapped_range (pc, osect->the_bfd_section)) | |
2811 | best_match = osect; | |
2812 | } | |
c906108c SS |
2813 | return best_match ? best_match->the_bfd_section : NULL; |
2814 | } | |
2815 | ||
2816 | /* Function: find_pc_mapped_section (PC) | |
2817 | If PC falls into the VMA address range of an overlay section that is | |
2818 | currently marked as MAPPED, return that section. Else return NULL. */ | |
2819 | ||
2820 | asection * | |
fba45db2 | 2821 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 2822 | { |
c5aa993b | 2823 | struct objfile *objfile; |
c906108c SS |
2824 | struct obj_section *osect; |
2825 | ||
2826 | if (overlay_debugging) | |
2827 | ALL_OBJSECTIONS (objfile, osect) | |
2828 | if (pc_in_mapped_range (pc, osect->the_bfd_section) && | |
2829 | overlay_is_mapped (osect)) | |
c5aa993b | 2830 | return osect->the_bfd_section; |
c906108c SS |
2831 | |
2832 | return NULL; | |
2833 | } | |
2834 | ||
2835 | /* Function: list_overlays_command | |
2836 | Print a list of mapped sections and their PC ranges */ | |
2837 | ||
2838 | void | |
fba45db2 | 2839 | list_overlays_command (char *args, int from_tty) |
c906108c | 2840 | { |
c5aa993b JM |
2841 | int nmapped = 0; |
2842 | struct objfile *objfile; | |
c906108c SS |
2843 | struct obj_section *osect; |
2844 | ||
2845 | if (overlay_debugging) | |
2846 | ALL_OBJSECTIONS (objfile, osect) | |
2847 | if (overlay_is_mapped (osect)) | |
c5aa993b JM |
2848 | { |
2849 | const char *name; | |
2850 | bfd_vma lma, vma; | |
2851 | int size; | |
2852 | ||
2853 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
2854 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
2855 | size = bfd_get_section_size_before_reloc (osect->the_bfd_section); | |
2856 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); | |
2857 | ||
2858 | printf_filtered ("Section %s, loaded at ", name); | |
2859 | print_address_numeric (lma, 1, gdb_stdout); | |
2860 | puts_filtered (" - "); | |
2861 | print_address_numeric (lma + size, 1, gdb_stdout); | |
2862 | printf_filtered (", mapped at "); | |
2863 | print_address_numeric (vma, 1, gdb_stdout); | |
2864 | puts_filtered (" - "); | |
2865 | print_address_numeric (vma + size, 1, gdb_stdout); | |
2866 | puts_filtered ("\n"); | |
2867 | ||
2868 | nmapped++; | |
2869 | } | |
c906108c SS |
2870 | if (nmapped == 0) |
2871 | printf_filtered ("No sections are mapped.\n"); | |
2872 | } | |
2873 | ||
2874 | /* Function: map_overlay_command | |
2875 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
2876 | ||
2877 | void | |
fba45db2 | 2878 | map_overlay_command (char *args, int from_tty) |
c906108c | 2879 | { |
c5aa993b JM |
2880 | struct objfile *objfile, *objfile2; |
2881 | struct obj_section *sec, *sec2; | |
2882 | asection *bfdsec; | |
c906108c SS |
2883 | |
2884 | if (!overlay_debugging) | |
515ad16c EZ |
2885 | error ("\ |
2886 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ | |
2887 | the 'overlay manual' command."); | |
c906108c SS |
2888 | |
2889 | if (args == 0 || *args == 0) | |
2890 | error ("Argument required: name of an overlay section"); | |
2891 | ||
2892 | /* First, find a section matching the user supplied argument */ | |
2893 | ALL_OBJSECTIONS (objfile, sec) | |
2894 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
2895 | { |
2896 | /* Now, check to see if the section is an overlay. */ | |
2897 | bfdsec = sec->the_bfd_section; | |
2898 | if (!section_is_overlay (bfdsec)) | |
2899 | continue; /* not an overlay section */ | |
2900 | ||
2901 | /* Mark the overlay as "mapped" */ | |
2902 | sec->ovly_mapped = 1; | |
2903 | ||
2904 | /* Next, make a pass and unmap any sections that are | |
2905 | overlapped by this new section: */ | |
2906 | ALL_OBJSECTIONS (objfile2, sec2) | |
9ec8e6a0 JB |
2907 | if (sec2->ovly_mapped |
2908 | && sec != sec2 | |
2909 | && sec->the_bfd_section != sec2->the_bfd_section | |
2910 | && sections_overlap (sec->the_bfd_section, | |
2911 | sec2->the_bfd_section)) | |
c5aa993b JM |
2912 | { |
2913 | if (info_verbose) | |
2914 | printf_filtered ("Note: section %s unmapped by overlap\n", | |
2915 | bfd_section_name (objfile->obfd, | |
2916 | sec2->the_bfd_section)); | |
2917 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2 */ | |
2918 | } | |
2919 | return; | |
2920 | } | |
c906108c SS |
2921 | error ("No overlay section called %s", args); |
2922 | } | |
2923 | ||
2924 | /* Function: unmap_overlay_command | |
2925 | Mark the overlay section as unmapped | |
2926 | (ie. resident in its LMA address range, rather than the VMA range). */ | |
2927 | ||
2928 | void | |
fba45db2 | 2929 | unmap_overlay_command (char *args, int from_tty) |
c906108c | 2930 | { |
c5aa993b | 2931 | struct objfile *objfile; |
c906108c SS |
2932 | struct obj_section *sec; |
2933 | ||
2934 | if (!overlay_debugging) | |
515ad16c EZ |
2935 | error ("\ |
2936 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ | |
2937 | the 'overlay manual' command."); | |
c906108c SS |
2938 | |
2939 | if (args == 0 || *args == 0) | |
2940 | error ("Argument required: name of an overlay section"); | |
2941 | ||
2942 | /* First, find a section matching the user supplied argument */ | |
2943 | ALL_OBJSECTIONS (objfile, sec) | |
2944 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
2945 | { |
2946 | if (!sec->ovly_mapped) | |
2947 | error ("Section %s is not mapped", args); | |
2948 | sec->ovly_mapped = 0; | |
2949 | return; | |
2950 | } | |
c906108c SS |
2951 | error ("No overlay section called %s", args); |
2952 | } | |
2953 | ||
2954 | /* Function: overlay_auto_command | |
2955 | A utility command to turn on overlay debugging. | |
2956 | Possibly this should be done via a set/show command. */ | |
2957 | ||
2958 | static void | |
fba45db2 | 2959 | overlay_auto_command (char *args, int from_tty) |
c906108c | 2960 | { |
d874f1e2 | 2961 | overlay_debugging = ovly_auto; |
1900040c | 2962 | enable_overlay_breakpoints (); |
c906108c SS |
2963 | if (info_verbose) |
2964 | printf_filtered ("Automatic overlay debugging enabled."); | |
2965 | } | |
2966 | ||
2967 | /* Function: overlay_manual_command | |
2968 | A utility command to turn on overlay debugging. | |
2969 | Possibly this should be done via a set/show command. */ | |
2970 | ||
2971 | static void | |
fba45db2 | 2972 | overlay_manual_command (char *args, int from_tty) |
c906108c | 2973 | { |
d874f1e2 | 2974 | overlay_debugging = ovly_on; |
1900040c | 2975 | disable_overlay_breakpoints (); |
c906108c SS |
2976 | if (info_verbose) |
2977 | printf_filtered ("Overlay debugging enabled."); | |
2978 | } | |
2979 | ||
2980 | /* Function: overlay_off_command | |
2981 | A utility command to turn on overlay debugging. | |
2982 | Possibly this should be done via a set/show command. */ | |
2983 | ||
2984 | static void | |
fba45db2 | 2985 | overlay_off_command (char *args, int from_tty) |
c906108c | 2986 | { |
d874f1e2 | 2987 | overlay_debugging = ovly_off; |
1900040c | 2988 | disable_overlay_breakpoints (); |
c906108c SS |
2989 | if (info_verbose) |
2990 | printf_filtered ("Overlay debugging disabled."); | |
2991 | } | |
2992 | ||
2993 | static void | |
fba45db2 | 2994 | overlay_load_command (char *args, int from_tty) |
c906108c SS |
2995 | { |
2996 | if (target_overlay_update) | |
2997 | (*target_overlay_update) (NULL); | |
2998 | else | |
2999 | error ("This target does not know how to read its overlay state."); | |
3000 | } | |
3001 | ||
3002 | /* Function: overlay_command | |
3003 | A place-holder for a mis-typed command */ | |
3004 | ||
3005 | /* Command list chain containing all defined "overlay" subcommands. */ | |
3006 | struct cmd_list_element *overlaylist; | |
3007 | ||
3008 | static void | |
fba45db2 | 3009 | overlay_command (char *args, int from_tty) |
c906108c | 3010 | { |
c5aa993b | 3011 | printf_unfiltered |
c906108c SS |
3012 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
3013 | help_list (overlaylist, "overlay ", -1, gdb_stdout); | |
3014 | } | |
3015 | ||
3016 | ||
3017 | /* Target Overlays for the "Simplest" overlay manager: | |
3018 | ||
3019 | This is GDB's default target overlay layer. It works with the | |
3020 | minimal overlay manager supplied as an example by Cygnus. The | |
3021 | entry point is via a function pointer "target_overlay_update", | |
3022 | so targets that use a different runtime overlay manager can | |
3023 | substitute their own overlay_update function and take over the | |
3024 | function pointer. | |
3025 | ||
3026 | The overlay_update function pokes around in the target's data structures | |
3027 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3028 | this information. | |
3029 | ||
3030 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3031 | unsigned _novlys; /# number of overlay sections #/ |
3032 | unsigned _ovly_table[_novlys][4] = { | |
3033 | {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/ | |
3034 | {..., ..., ..., ...}, | |
3035 | } | |
3036 | unsigned _novly_regions; /# number of overlay regions #/ | |
3037 | unsigned _ovly_region_table[_novly_regions][3] = { | |
3038 | {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ | |
3039 | {..., ..., ...}, | |
3040 | } | |
c906108c SS |
3041 | These functions will attempt to update GDB's mappedness state in the |
3042 | symbol section table, based on the target's mappedness state. | |
3043 | ||
3044 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3045 | attempt to detect when the cached copy is invalidated. The main | |
3046 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3047 | the cached table and re-reads only the entry for that section from | |
3048 | the target (whenever possible). | |
3049 | */ | |
3050 | ||
3051 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3052 | static unsigned (*cache_ovly_table)[4] = 0; |
c906108c | 3053 | #if 0 |
c5aa993b | 3054 | static unsigned (*cache_ovly_region_table)[3] = 0; |
c906108c | 3055 | #endif |
c5aa993b | 3056 | static unsigned cache_novlys = 0; |
c906108c | 3057 | #if 0 |
c5aa993b | 3058 | static unsigned cache_novly_regions = 0; |
c906108c SS |
3059 | #endif |
3060 | static CORE_ADDR cache_ovly_table_base = 0; | |
3061 | #if 0 | |
3062 | static CORE_ADDR cache_ovly_region_table_base = 0; | |
3063 | #endif | |
c5aa993b JM |
3064 | enum ovly_index |
3065 | { | |
3066 | VMA, SIZE, LMA, MAPPED | |
3067 | }; | |
c906108c SS |
3068 | #define TARGET_LONG_BYTES (TARGET_LONG_BIT / TARGET_CHAR_BIT) |
3069 | ||
3070 | /* Throw away the cached copy of _ovly_table */ | |
3071 | static void | |
fba45db2 | 3072 | simple_free_overlay_table (void) |
c906108c SS |
3073 | { |
3074 | if (cache_ovly_table) | |
b8c9b27d | 3075 | xfree (cache_ovly_table); |
c5aa993b | 3076 | cache_novlys = 0; |
c906108c SS |
3077 | cache_ovly_table = NULL; |
3078 | cache_ovly_table_base = 0; | |
3079 | } | |
3080 | ||
3081 | #if 0 | |
3082 | /* Throw away the cached copy of _ovly_region_table */ | |
3083 | static void | |
fba45db2 | 3084 | simple_free_overlay_region_table (void) |
c906108c SS |
3085 | { |
3086 | if (cache_ovly_region_table) | |
b8c9b27d | 3087 | xfree (cache_ovly_region_table); |
c5aa993b | 3088 | cache_novly_regions = 0; |
c906108c SS |
3089 | cache_ovly_region_table = NULL; |
3090 | cache_ovly_region_table_base = 0; | |
3091 | } | |
3092 | #endif | |
3093 | ||
3094 | /* Read an array of ints from the target into a local buffer. | |
3095 | Convert to host order. int LEN is number of ints */ | |
3096 | static void | |
fba45db2 | 3097 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, int len) |
c906108c | 3098 | { |
34c0bd93 | 3099 | /* FIXME (alloca): Not safe if array is very large. */ |
c906108c | 3100 | char *buf = alloca (len * TARGET_LONG_BYTES); |
c5aa993b | 3101 | int i; |
c906108c SS |
3102 | |
3103 | read_memory (memaddr, buf, len * TARGET_LONG_BYTES); | |
3104 | for (i = 0; i < len; i++) | |
c5aa993b | 3105 | myaddr[i] = extract_unsigned_integer (TARGET_LONG_BYTES * i + buf, |
c906108c SS |
3106 | TARGET_LONG_BYTES); |
3107 | } | |
3108 | ||
3109 | /* Find and grab a copy of the target _ovly_table | |
3110 | (and _novlys, which is needed for the table's size) */ | |
c5aa993b | 3111 | static int |
fba45db2 | 3112 | simple_read_overlay_table (void) |
c906108c | 3113 | { |
0d43edd1 | 3114 | struct minimal_symbol *novlys_msym, *ovly_table_msym; |
c906108c SS |
3115 | |
3116 | simple_free_overlay_table (); | |
9b27852e | 3117 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
0d43edd1 | 3118 | if (! novlys_msym) |
c906108c | 3119 | { |
0d43edd1 JB |
3120 | error ("Error reading inferior's overlay table: " |
3121 | "couldn't find `_novlys' variable\n" | |
3122 | "in inferior. Use `overlay manual' mode."); | |
3123 | return 0; | |
c906108c | 3124 | } |
0d43edd1 | 3125 | |
9b27852e | 3126 | ovly_table_msym = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
0d43edd1 JB |
3127 | if (! ovly_table_msym) |
3128 | { | |
3129 | error ("Error reading inferior's overlay table: couldn't find " | |
3130 | "`_ovly_table' array\n" | |
3131 | "in inferior. Use `overlay manual' mode."); | |
3132 | return 0; | |
3133 | } | |
3134 | ||
3135 | cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (novlys_msym), 4); | |
3136 | cache_ovly_table | |
3137 | = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); | |
3138 | cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (ovly_table_msym); | |
3139 | read_target_long_array (cache_ovly_table_base, | |
3140 | (int *) cache_ovly_table, | |
3141 | cache_novlys * 4); | |
3142 | ||
c5aa993b | 3143 | return 1; /* SUCCESS */ |
c906108c SS |
3144 | } |
3145 | ||
3146 | #if 0 | |
3147 | /* Find and grab a copy of the target _ovly_region_table | |
3148 | (and _novly_regions, which is needed for the table's size) */ | |
c5aa993b | 3149 | static int |
fba45db2 | 3150 | simple_read_overlay_region_table (void) |
c906108c SS |
3151 | { |
3152 | struct minimal_symbol *msym; | |
3153 | ||
3154 | simple_free_overlay_region_table (); | |
9b27852e | 3155 | msym = lookup_minimal_symbol ("_novly_regions", NULL, NULL); |
c906108c SS |
3156 | if (msym != NULL) |
3157 | cache_novly_regions = read_memory_integer (SYMBOL_VALUE_ADDRESS (msym), 4); | |
c5aa993b JM |
3158 | else |
3159 | return 0; /* failure */ | |
c906108c SS |
3160 | cache_ovly_region_table = (void *) xmalloc (cache_novly_regions * 12); |
3161 | if (cache_ovly_region_table != NULL) | |
3162 | { | |
9b27852e | 3163 | msym = lookup_minimal_symbol ("_ovly_region_table", NULL, NULL); |
c906108c SS |
3164 | if (msym != NULL) |
3165 | { | |
3166 | cache_ovly_region_table_base = SYMBOL_VALUE_ADDRESS (msym); | |
c5aa993b JM |
3167 | read_target_long_array (cache_ovly_region_table_base, |
3168 | (int *) cache_ovly_region_table, | |
c906108c SS |
3169 | cache_novly_regions * 3); |
3170 | } | |
c5aa993b JM |
3171 | else |
3172 | return 0; /* failure */ | |
c906108c | 3173 | } |
c5aa993b JM |
3174 | else |
3175 | return 0; /* failure */ | |
3176 | return 1; /* SUCCESS */ | |
c906108c SS |
3177 | } |
3178 | #endif | |
3179 | ||
3180 | /* Function: simple_overlay_update_1 | |
3181 | A helper function for simple_overlay_update. Assuming a cached copy | |
3182 | of _ovly_table exists, look through it to find an entry whose vma, | |
3183 | lma and size match those of OSECT. Re-read the entry and make sure | |
3184 | it still matches OSECT (else the table may no longer be valid). | |
3185 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3186 | success, 0 for failure. */ | |
3187 | ||
3188 | static int | |
fba45db2 | 3189 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c SS |
3190 | { |
3191 | int i, size; | |
fbd35540 MS |
3192 | bfd *obfd = osect->objfile->obfd; |
3193 | asection *bsect = osect->the_bfd_section; | |
c906108c SS |
3194 | |
3195 | size = bfd_get_section_size_before_reloc (osect->the_bfd_section); | |
3196 | for (i = 0; i < cache_novlys; i++) | |
fbd35540 MS |
3197 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3198 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3199 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3200 | { |
3201 | read_target_long_array (cache_ovly_table_base + i * TARGET_LONG_BYTES, | |
3202 | (int *) cache_ovly_table[i], 4); | |
fbd35540 MS |
3203 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3204 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3205 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3206 | { |
3207 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3208 | return 1; | |
3209 | } | |
fbd35540 | 3210 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3211 | return 0; |
3212 | } | |
3213 | return 0; | |
3214 | } | |
3215 | ||
3216 | /* Function: simple_overlay_update | |
3217 | If OSECT is NULL, then update all sections' mapped state | |
3218 | (after re-reading the entire target _ovly_table). | |
3219 | If OSECT is non-NULL, then try to find a matching entry in the | |
3220 | cached ovly_table and update only OSECT's mapped state. | |
3221 | If a cached entry can't be found or the cache isn't valid, then | |
3222 | re-read the entire cache, and go ahead and update all sections. */ | |
3223 | ||
3224 | static void | |
fba45db2 | 3225 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3226 | { |
c5aa993b | 3227 | struct objfile *objfile; |
c906108c SS |
3228 | |
3229 | /* Were we given an osect to look up? NULL means do all of them. */ | |
3230 | if (osect) | |
3231 | /* Have we got a cached copy of the target's overlay table? */ | |
3232 | if (cache_ovly_table != NULL) | |
3233 | /* Does its cached location match what's currently in the symtab? */ | |
c5aa993b | 3234 | if (cache_ovly_table_base == |
9b27852e | 3235 | SYMBOL_VALUE_ADDRESS (lookup_minimal_symbol ("_ovly_table", NULL, NULL))) |
c906108c SS |
3236 | /* Then go ahead and try to look up this single section in the cache */ |
3237 | if (simple_overlay_update_1 (osect)) | |
3238 | /* Found it! We're done. */ | |
3239 | return; | |
3240 | ||
3241 | /* Cached table no good: need to read the entire table anew. | |
3242 | Or else we want all the sections, in which case it's actually | |
3243 | more efficient to read the whole table in one block anyway. */ | |
3244 | ||
0d43edd1 JB |
3245 | if (! simple_read_overlay_table ()) |
3246 | return; | |
3247 | ||
c906108c SS |
3248 | /* Now may as well update all sections, even if only one was requested. */ |
3249 | ALL_OBJSECTIONS (objfile, osect) | |
3250 | if (section_is_overlay (osect->the_bfd_section)) | |
c5aa993b JM |
3251 | { |
3252 | int i, size; | |
fbd35540 MS |
3253 | bfd *obfd = osect->objfile->obfd; |
3254 | asection *bsect = osect->the_bfd_section; | |
c5aa993b JM |
3255 | |
3256 | size = bfd_get_section_size_before_reloc (osect->the_bfd_section); | |
3257 | for (i = 0; i < cache_novlys; i++) | |
fbd35540 MS |
3258 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3259 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3260 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
3261 | { /* obj_section matches i'th entry in ovly_table */ | |
c5aa993b JM |
3262 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; |
3263 | break; /* finished with inner for loop: break out */ | |
3264 | } | |
3265 | } | |
c906108c SS |
3266 | } |
3267 | ||
3268 | ||
3269 | void | |
fba45db2 | 3270 | _initialize_symfile (void) |
c906108c SS |
3271 | { |
3272 | struct cmd_list_element *c; | |
c5aa993b | 3273 | |
c906108c | 3274 | c = add_cmd ("symbol-file", class_files, symbol_file_command, |
c5aa993b | 3275 | "Load symbol table from executable file FILE.\n\ |
c906108c SS |
3276 | The `file' command can also load symbol tables, as well as setting the file\n\ |
3277 | to execute.", &cmdlist); | |
5ba2abeb | 3278 | set_cmd_completer (c, filename_completer); |
c906108c SS |
3279 | |
3280 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, | |
db162d44 | 3281 | "Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR> ...]\n\ |
c906108c | 3282 | Load the symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
2acceee2 | 3283 | ADDR is the starting address of the file's text.\n\ |
db162d44 EZ |
3284 | The optional arguments are section-name section-address pairs and\n\ |
3285 | should be specified if the data and bss segments are not contiguous\n\ | |
d4654627 | 3286 | with the text. SECT is a section name to be loaded at SECT_ADDR.", |
c906108c | 3287 | &cmdlist); |
5ba2abeb | 3288 | set_cmd_completer (c, filename_completer); |
c906108c SS |
3289 | |
3290 | c = add_cmd ("add-shared-symbol-files", class_files, | |
3291 | add_shared_symbol_files_command, | |
3292 | "Load the symbols from shared objects in the dynamic linker's link map.", | |
c5aa993b | 3293 | &cmdlist); |
c906108c SS |
3294 | c = add_alias_cmd ("assf", "add-shared-symbol-files", class_files, 1, |
3295 | &cmdlist); | |
3296 | ||
3297 | c = add_cmd ("load", class_files, load_command, | |
c5aa993b | 3298 | "Dynamically load FILE into the running program, and record its symbols\n\ |
c906108c | 3299 | for access from GDB.", &cmdlist); |
5ba2abeb | 3300 | set_cmd_completer (c, filename_completer); |
c906108c SS |
3301 | |
3302 | add_show_from_set | |
3303 | (add_set_cmd ("symbol-reloading", class_support, var_boolean, | |
c5aa993b JM |
3304 | (char *) &symbol_reloading, |
3305 | "Set dynamic symbol table reloading multiple times in one run.", | |
c906108c SS |
3306 | &setlist), |
3307 | &showlist); | |
3308 | ||
c5aa993b JM |
3309 | add_prefix_cmd ("overlay", class_support, overlay_command, |
3310 | "Commands for debugging overlays.", &overlaylist, | |
c906108c SS |
3311 | "overlay ", 0, &cmdlist); |
3312 | ||
3313 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3314 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3315 | ||
c5aa993b | 3316 | add_cmd ("map-overlay", class_support, map_overlay_command, |
c906108c SS |
3317 | "Assert that an overlay section is mapped.", &overlaylist); |
3318 | ||
c5aa993b | 3319 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
c906108c SS |
3320 | "Assert that an overlay section is unmapped.", &overlaylist); |
3321 | ||
c5aa993b | 3322 | add_cmd ("list-overlays", class_support, list_overlays_command, |
c906108c SS |
3323 | "List mappings of overlay sections.", &overlaylist); |
3324 | ||
c5aa993b | 3325 | add_cmd ("manual", class_support, overlay_manual_command, |
c906108c | 3326 | "Enable overlay debugging.", &overlaylist); |
c5aa993b | 3327 | add_cmd ("off", class_support, overlay_off_command, |
c906108c | 3328 | "Disable overlay debugging.", &overlaylist); |
c5aa993b | 3329 | add_cmd ("auto", class_support, overlay_auto_command, |
c906108c | 3330 | "Enable automatic overlay debugging.", &overlaylist); |
c5aa993b | 3331 | add_cmd ("load-target", class_support, overlay_load_command, |
c906108c SS |
3332 | "Read the overlay mapping state from the target.", &overlaylist); |
3333 | ||
3334 | /* Filename extension to source language lookup table: */ | |
3335 | init_filename_language_table (); | |
3336 | c = add_set_cmd ("extension-language", class_files, var_string_noescape, | |
c5aa993b | 3337 | (char *) &ext_args, |
c906108c SS |
3338 | "Set mapping between filename extension and source language.\n\ |
3339 | Usage: set extension-language .foo bar", | |
c5aa993b | 3340 | &setlist); |
9f60d481 | 3341 | set_cmd_cfunc (c, set_ext_lang_command); |
c906108c | 3342 | |
c5aa993b | 3343 | add_info ("extensions", info_ext_lang_command, |
c906108c | 3344 | "All filename extensions associated with a source language."); |
917317f4 JM |
3345 | |
3346 | add_show_from_set | |
3347 | (add_set_cmd ("download-write-size", class_obscure, | |
3348 | var_integer, (char *) &download_write_size, | |
3349 | "Set the write size used when downloading a program.\n" | |
3350 | "Only used when downloading a program onto a remote\n" | |
3351 | "target. Specify zero, or a negative value, to disable\n" | |
3352 | "blocked writes. The actual size of each transfer is also\n" | |
3353 | "limited by the size of the target packet and the memory\n" | |
3354 | "cache.\n", | |
3355 | &setlist), | |
3356 | &showlist); | |
c906108c | 3357 | } |