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 * | |
fba45db2 | 302 | obsavestring (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 | { | |
309 | register char *p1 = ptr; | |
310 | register char *p2 = p; | |
311 | char *end = ptr + size; | |
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 | ||
c906108c SS |
476 | /* Parse the user's idea of an offset for dynamic linking, into our idea |
477 | of how to represent it for fast symbol reading. This is the default | |
478 | version of the sym_fns.sym_offsets function for symbol readers that | |
479 | don't need to do anything special. It allocates a section_offsets table | |
480 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
481 | ||
d4f3574e | 482 | void |
fba45db2 KB |
483 | default_symfile_offsets (struct objfile *objfile, |
484 | struct section_addr_info *addrs) | |
c906108c | 485 | { |
c906108c | 486 | int i; |
b8fbeb18 | 487 | asection *sect = NULL; |
c906108c SS |
488 | |
489 | objfile->num_sections = SECT_OFF_MAX; | |
d4f3574e | 490 | objfile->section_offsets = (struct section_offsets *) |
c5aa993b | 491 | obstack_alloc (&objfile->psymbol_obstack, SIZEOF_SECTION_OFFSETS); |
d4f3574e | 492 | memset (objfile->section_offsets, 0, SIZEOF_SECTION_OFFSETS); |
c906108c | 493 | |
b8fbeb18 EZ |
494 | /* Now calculate offsets for section that were specified by the |
495 | caller. */ | |
2acceee2 JM |
496 | for (i = 0; i < MAX_SECTIONS && addrs->other[i].name; i++) |
497 | { | |
498 | struct other_sections *osp ; | |
499 | ||
500 | osp = &addrs->other[i] ; | |
b8fbeb18 | 501 | if (osp->addr == 0) |
2acceee2 | 502 | continue; |
b8fbeb18 | 503 | |
2acceee2 | 504 | /* Record all sections in offsets */ |
b8fbeb18 EZ |
505 | /* The section_offsets in the objfile are here filled in using |
506 | the BFD index. */ | |
a4c8257b | 507 | (objfile->section_offsets)->offsets[osp->sectindex] = osp->addr; |
2acceee2 | 508 | } |
c906108c | 509 | |
b8fbeb18 EZ |
510 | /* Remember the bfd indexes for the .text, .data, .bss and |
511 | .rodata sections. */ | |
512 | ||
513 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); | |
514 | if (sect) | |
515 | objfile->sect_index_text = sect->index; | |
516 | ||
517 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
518 | if (sect) | |
519 | objfile->sect_index_data = sect->index; | |
520 | ||
521 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
522 | if (sect) | |
523 | objfile->sect_index_bss = sect->index; | |
524 | ||
525 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
526 | if (sect) | |
527 | objfile->sect_index_rodata = sect->index; | |
528 | ||
bbcd32ad FF |
529 | /* This is where things get really weird... We MUST have valid |
530 | indices for the various sect_index_* members or gdb will abort. | |
531 | So if for example, there is no ".text" section, we have to | |
532 | accomodate that. Except when explicitly adding symbol files at | |
533 | some address, section_offsets contains nothing but zeros, so it | |
534 | doesn't matter which slot in section_offsets the individual | |
535 | sect_index_* members index into. So if they are all zero, it is | |
536 | safe to just point all the currently uninitialized indices to the | |
537 | first slot. */ | |
538 | ||
539 | for (i = 0; i < objfile->num_sections; i++) | |
540 | { | |
541 | if (ANOFFSET (objfile->section_offsets, i) != 0) | |
542 | { | |
543 | break; | |
544 | } | |
545 | } | |
546 | if (i == objfile->num_sections) | |
547 | { | |
548 | if (objfile->sect_index_text == -1) | |
549 | objfile->sect_index_text = 0; | |
550 | if (objfile->sect_index_data == -1) | |
551 | objfile->sect_index_data = 0; | |
552 | if (objfile->sect_index_bss == -1) | |
553 | objfile->sect_index_bss = 0; | |
554 | if (objfile->sect_index_rodata == -1) | |
555 | objfile->sect_index_rodata = 0; | |
556 | } | |
b8fbeb18 | 557 | } |
c906108c SS |
558 | |
559 | /* Process a symbol file, as either the main file or as a dynamically | |
560 | loaded file. | |
561 | ||
96baa820 JM |
562 | OBJFILE is where the symbols are to be read from. |
563 | ||
564 | ADDR is the address where the text segment was loaded, unless the | |
565 | objfile is the main symbol file, in which case it is zero. | |
566 | ||
567 | MAINLINE is nonzero if this is the main symbol file, or zero if | |
568 | it's an extra symbol file such as dynamically loaded code. | |
569 | ||
570 | VERBO is nonzero if the caller has printed a verbose message about | |
571 | the symbol reading (and complaints can be more terse about it). */ | |
c906108c SS |
572 | |
573 | void | |
fba45db2 KB |
574 | syms_from_objfile (struct objfile *objfile, struct section_addr_info *addrs, |
575 | int mainline, int verbo) | |
c906108c | 576 | { |
2acceee2 JM |
577 | asection *lower_sect; |
578 | asection *sect; | |
579 | CORE_ADDR lower_offset; | |
580 | struct section_addr_info local_addr; | |
c906108c | 581 | struct cleanup *old_chain; |
2acceee2 JM |
582 | int i; |
583 | ||
584 | /* If ADDRS is NULL, initialize the local section_addr_info struct and | |
585 | point ADDRS to it. We now establish the convention that an addr of | |
586 | zero means no load address was specified. */ | |
587 | ||
588 | if (addrs == NULL) | |
589 | { | |
590 | memset (&local_addr, 0, sizeof (local_addr)); | |
591 | addrs = &local_addr; | |
592 | } | |
c906108c SS |
593 | |
594 | init_entry_point_info (objfile); | |
595 | find_sym_fns (objfile); | |
596 | ||
75245b24 MS |
597 | if (objfile->sf == NULL) |
598 | return; /* No symbols. */ | |
599 | ||
c906108c SS |
600 | /* Make sure that partially constructed symbol tables will be cleaned up |
601 | if an error occurs during symbol reading. */ | |
74b7792f | 602 | old_chain = make_cleanup_free_objfile (objfile); |
c906108c | 603 | |
c5aa993b | 604 | if (mainline) |
c906108c SS |
605 | { |
606 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 607 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 608 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
609 | |
610 | /* Since no error yet, throw away the old symbol table. */ | |
611 | ||
612 | if (symfile_objfile != NULL) | |
613 | { | |
614 | free_objfile (symfile_objfile); | |
615 | symfile_objfile = NULL; | |
616 | } | |
617 | ||
618 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
619 | If the user wants to get rid of them, they should do "symbol-file" |
620 | without arguments first. Not sure this is the best behavior | |
621 | (PR 2207). */ | |
c906108c | 622 | |
c5aa993b | 623 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
624 | } |
625 | ||
626 | /* Convert addr into an offset rather than an absolute address. | |
627 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 628 | and assume that <addr> is where that got loaded. |
c906108c | 629 | |
53a5351d JM |
630 | We no longer warn if the lowest section is not a text segment (as |
631 | happens for the PA64 port. */ | |
e7cf9df1 | 632 | if (!mainline) |
c906108c | 633 | { |
2acceee2 JM |
634 | /* Find lowest loadable section to be used as starting point for |
635 | continguous sections. FIXME!! won't work without call to find | |
636 | .text first, but this assumes text is lowest section. */ | |
637 | lower_sect = bfd_get_section_by_name (objfile->obfd, ".text"); | |
638 | if (lower_sect == NULL) | |
c906108c | 639 | bfd_map_over_sections (objfile->obfd, find_lowest_section, |
2acceee2 JM |
640 | (PTR) &lower_sect); |
641 | if (lower_sect == NULL) | |
c906108c SS |
642 | warning ("no loadable sections found in added symbol-file %s", |
643 | objfile->name); | |
b8fbeb18 EZ |
644 | else |
645 | if ((bfd_get_section_flags (objfile->obfd, lower_sect) & SEC_CODE) == 0) | |
646 | warning ("Lowest section in %s is %s at %s", | |
647 | objfile->name, | |
648 | bfd_section_name (objfile->obfd, lower_sect), | |
649 | paddr (bfd_section_vma (objfile->obfd, lower_sect))); | |
2acceee2 JM |
650 | if (lower_sect != NULL) |
651 | lower_offset = bfd_section_vma (objfile->obfd, lower_sect); | |
652 | else | |
653 | lower_offset = 0; | |
654 | ||
655 | /* Calculate offsets for the loadable sections. | |
656 | FIXME! Sections must be in order of increasing loadable section | |
657 | so that contiguous sections can use the lower-offset!!! | |
658 | ||
659 | Adjust offsets if the segments are not contiguous. | |
660 | If the section is contiguous, its offset should be set to | |
661 | the offset of the highest loadable section lower than it | |
662 | (the loadable section directly below it in memory). | |
663 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
664 | ||
e7cf9df1 | 665 | /* Calculate offsets for sections. */ |
2acceee2 JM |
666 | for (i=0 ; i < MAX_SECTIONS && addrs->other[i].name; i++) |
667 | { | |
e7cf9df1 | 668 | if (addrs->other[i].addr != 0) |
2acceee2 | 669 | { |
e7cf9df1 | 670 | sect = bfd_get_section_by_name (objfile->obfd, addrs->other[i].name); |
2acceee2 JM |
671 | if (sect) |
672 | { | |
673 | addrs->other[i].addr -= bfd_section_vma (objfile->obfd, sect); | |
674 | lower_offset = addrs->other[i].addr; | |
e7cf9df1 | 675 | /* This is the index used by BFD. */ |
2acceee2 JM |
676 | addrs->other[i].sectindex = sect->index ; |
677 | } | |
678 | else | |
679 | { | |
680 | warning ("section %s not found in %s", addrs->other[i].name, | |
681 | objfile->name); | |
682 | addrs->other[i].addr = 0; | |
683 | } | |
684 | } | |
685 | else | |
686 | addrs->other[i].addr = lower_offset; | |
687 | } | |
c906108c SS |
688 | } |
689 | ||
690 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
691 | appear for this new file, and record how verbose to be, then do the | |
692 | initial symbol reading for this file. */ | |
693 | ||
c5aa993b | 694 | (*objfile->sf->sym_init) (objfile); |
b9caf505 | 695 | clear_complaints (&symfile_complaints, 1, verbo); |
c906108c | 696 | |
2acceee2 | 697 | (*objfile->sf->sym_offsets) (objfile, addrs); |
c906108c SS |
698 | |
699 | #ifndef IBM6000_TARGET | |
700 | /* This is a SVR4/SunOS specific hack, I think. In any event, it | |
701 | screws RS/6000. sym_offsets should be doing this sort of thing, | |
702 | because it knows the mapping between bfd sections and | |
703 | section_offsets. */ | |
704 | /* This is a hack. As far as I can tell, section offsets are not | |
705 | target dependent. They are all set to addr with a couple of | |
706 | exceptions. The exceptions are sysvr4 shared libraries, whose | |
707 | offsets are kept in solib structures anyway and rs6000 xcoff | |
708 | which handles shared libraries in a completely unique way. | |
709 | ||
710 | Section offsets are built similarly, except that they are built | |
711 | by adding addr in all cases because there is no clear mapping | |
712 | from section_offsets into actual sections. Note that solib.c | |
96baa820 | 713 | has a different algorithm for finding section offsets. |
c906108c SS |
714 | |
715 | These should probably all be collapsed into some target | |
716 | independent form of shared library support. FIXME. */ | |
717 | ||
2acceee2 | 718 | if (addrs) |
c906108c SS |
719 | { |
720 | struct obj_section *s; | |
721 | ||
2acceee2 JM |
722 | /* Map section offsets in "addr" back to the object's |
723 | sections by comparing the section names with bfd's | |
724 | section names. Then adjust the section address by | |
725 | the offset. */ /* for gdb/13815 */ | |
726 | ||
96baa820 | 727 | ALL_OBJFILE_OSECTIONS (objfile, s) |
c906108c | 728 | { |
2acceee2 JM |
729 | CORE_ADDR s_addr = 0; |
730 | int i; | |
731 | ||
62557bbc KB |
732 | for (i = 0; |
733 | !s_addr && i < MAX_SECTIONS && addrs->other[i].name; | |
734 | i++) | |
fbd35540 MS |
735 | if (strcmp (bfd_section_name (s->objfile->obfd, |
736 | s->the_bfd_section), | |
737 | addrs->other[i].name) == 0) | |
2acceee2 JM |
738 | s_addr = addrs->other[i].addr; /* end added for gdb/13815 */ |
739 | ||
c906108c | 740 | s->addr -= s->offset; |
2acceee2 | 741 | s->addr += s_addr; |
c906108c | 742 | s->endaddr -= s->offset; |
2acceee2 JM |
743 | s->endaddr += s_addr; |
744 | s->offset += s_addr; | |
c906108c SS |
745 | } |
746 | } | |
747 | #endif /* not IBM6000_TARGET */ | |
748 | ||
96baa820 | 749 | (*objfile->sf->sym_read) (objfile, mainline); |
c906108c SS |
750 | |
751 | if (!have_partial_symbols () && !have_full_symbols ()) | |
752 | { | |
753 | wrap_here (""); | |
754 | printf_filtered ("(no debugging symbols found)..."); | |
755 | wrap_here (""); | |
756 | } | |
757 | ||
758 | /* Don't allow char * to have a typename (else would get caddr_t). | |
759 | Ditto void *. FIXME: Check whether this is now done by all the | |
760 | symbol readers themselves (many of them now do), and if so remove | |
761 | it from here. */ | |
762 | ||
763 | TYPE_NAME (lookup_pointer_type (builtin_type_char)) = 0; | |
764 | TYPE_NAME (lookup_pointer_type (builtin_type_void)) = 0; | |
765 | ||
766 | /* Mark the objfile has having had initial symbol read attempted. Note | |
767 | that this does not mean we found any symbols... */ | |
768 | ||
c5aa993b | 769 | objfile->flags |= OBJF_SYMS; |
c906108c SS |
770 | |
771 | /* Discard cleanups as symbol reading was successful. */ | |
772 | ||
773 | discard_cleanups (old_chain); | |
774 | ||
96baa820 | 775 | /* Call this after reading in a new symbol table to give target |
38c2ef12 | 776 | dependent code a crack at the new symbols. For instance, this |
96baa820 JM |
777 | could be used to update the values of target-specific symbols GDB |
778 | needs to keep track of (such as _sigtramp, or whatever). */ | |
c906108c SS |
779 | |
780 | TARGET_SYMFILE_POSTREAD (objfile); | |
781 | } | |
782 | ||
783 | /* Perform required actions after either reading in the initial | |
784 | symbols for a new objfile, or mapping in the symbols from a reusable | |
785 | objfile. */ | |
c5aa993b | 786 | |
c906108c | 787 | void |
fba45db2 | 788 | new_symfile_objfile (struct objfile *objfile, int mainline, int verbo) |
c906108c SS |
789 | { |
790 | ||
791 | /* If this is the main symbol file we have to clean up all users of the | |
792 | old main symbol file. Otherwise it is sufficient to fixup all the | |
793 | breakpoints that may have been redefined by this symbol file. */ | |
794 | if (mainline) | |
795 | { | |
796 | /* OK, make it the "real" symbol file. */ | |
797 | symfile_objfile = objfile; | |
798 | ||
799 | clear_symtab_users (); | |
800 | } | |
801 | else | |
802 | { | |
803 | breakpoint_re_set (); | |
804 | } | |
805 | ||
806 | /* We're done reading the symbol file; finish off complaints. */ | |
b9caf505 | 807 | clear_complaints (&symfile_complaints, 0, verbo); |
c906108c SS |
808 | } |
809 | ||
810 | /* Process a symbol file, as either the main file or as a dynamically | |
811 | loaded file. | |
812 | ||
813 | NAME is the file name (which will be tilde-expanded and made | |
814 | absolute herein) (but we don't free or modify NAME itself). | |
815 | FROM_TTY says how verbose to be. MAINLINE specifies whether this | |
816 | is the main symbol file, or whether it's an extra symbol file such | |
817 | as dynamically loaded code. If !mainline, ADDR is the address | |
818 | where the text segment was loaded. | |
819 | ||
c906108c SS |
820 | Upon success, returns a pointer to the objfile that was added. |
821 | Upon failure, jumps back to command level (never returns). */ | |
822 | ||
823 | struct objfile * | |
fba45db2 KB |
824 | symbol_file_add (char *name, int from_tty, struct section_addr_info *addrs, |
825 | int mainline, int flags) | |
c906108c SS |
826 | { |
827 | struct objfile *objfile; | |
828 | struct partial_symtab *psymtab; | |
829 | bfd *abfd; | |
830 | ||
831 | /* Open a bfd for the file, and give user a chance to burp if we'd be | |
832 | interactively wiping out any existing symbols. */ | |
833 | ||
834 | abfd = symfile_bfd_open (name); | |
835 | ||
836 | if ((have_full_symbols () || have_partial_symbols ()) | |
837 | && mainline | |
838 | && from_tty | |
839 | && !query ("Load new symbol table from \"%s\"? ", name)) | |
c5aa993b | 840 | error ("Not confirmed."); |
c906108c | 841 | |
2df3850c | 842 | objfile = allocate_objfile (abfd, flags); |
c906108c SS |
843 | |
844 | /* If the objfile uses a mapped symbol file, and we have a psymtab for | |
845 | it, then skip reading any symbols at this time. */ | |
846 | ||
c5aa993b | 847 | if ((objfile->flags & OBJF_MAPPED) && (objfile->flags & OBJF_SYMS)) |
c906108c SS |
848 | { |
849 | /* We mapped in an existing symbol table file that already has had | |
c5aa993b JM |
850 | initial symbol reading performed, so we can skip that part. Notify |
851 | the user that instead of reading the symbols, they have been mapped. | |
852 | */ | |
c906108c SS |
853 | if (from_tty || info_verbose) |
854 | { | |
855 | printf_filtered ("Mapped symbols for %s...", name); | |
856 | wrap_here (""); | |
857 | gdb_flush (gdb_stdout); | |
858 | } | |
859 | init_entry_point_info (objfile); | |
860 | find_sym_fns (objfile); | |
861 | } | |
862 | else | |
863 | { | |
864 | /* We either created a new mapped symbol table, mapped an existing | |
c5aa993b JM |
865 | symbol table file which has not had initial symbol reading |
866 | performed, or need to read an unmapped symbol table. */ | |
c906108c SS |
867 | if (from_tty || info_verbose) |
868 | { | |
869 | if (pre_add_symbol_hook) | |
870 | pre_add_symbol_hook (name); | |
871 | else | |
872 | { | |
873 | printf_filtered ("Reading symbols from %s...", name); | |
874 | wrap_here (""); | |
875 | gdb_flush (gdb_stdout); | |
876 | } | |
877 | } | |
2acceee2 | 878 | syms_from_objfile (objfile, addrs, mainline, from_tty); |
c906108c SS |
879 | } |
880 | ||
881 | /* We now have at least a partial symbol table. Check to see if the | |
882 | user requested that all symbols be read on initial access via either | |
883 | the gdb startup command line or on a per symbol file basis. Expand | |
884 | all partial symbol tables for this objfile if so. */ | |
885 | ||
2acceee2 | 886 | if ((flags & OBJF_READNOW) || readnow_symbol_files) |
c906108c SS |
887 | { |
888 | if (from_tty || info_verbose) | |
889 | { | |
890 | printf_filtered ("expanding to full symbols..."); | |
891 | wrap_here (""); | |
892 | gdb_flush (gdb_stdout); | |
893 | } | |
894 | ||
c5aa993b | 895 | for (psymtab = objfile->psymtabs; |
c906108c | 896 | psymtab != NULL; |
c5aa993b | 897 | psymtab = psymtab->next) |
c906108c SS |
898 | { |
899 | psymtab_to_symtab (psymtab); | |
900 | } | |
901 | } | |
902 | ||
903 | if (from_tty || info_verbose) | |
904 | { | |
905 | if (post_add_symbol_hook) | |
c5aa993b | 906 | post_add_symbol_hook (); |
c906108c | 907 | else |
c5aa993b JM |
908 | { |
909 | printf_filtered ("done.\n"); | |
910 | gdb_flush (gdb_stdout); | |
911 | } | |
c906108c SS |
912 | } |
913 | ||
109f874e MS |
914 | if (objfile->sf == NULL) |
915 | return objfile; /* No symbols. */ | |
916 | ||
c906108c SS |
917 | new_symfile_objfile (objfile, mainline, from_tty); |
918 | ||
11cf8741 JM |
919 | if (target_new_objfile_hook) |
920 | target_new_objfile_hook (objfile); | |
c906108c SS |
921 | |
922 | return (objfile); | |
923 | } | |
924 | ||
d7db6da9 FN |
925 | /* Call symbol_file_add() with default values and update whatever is |
926 | affected by the loading of a new main(). | |
927 | Used when the file is supplied in the gdb command line | |
928 | and by some targets with special loading requirements. | |
929 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
930 | argument for the switches that can only be specified in the symbol_file | |
931 | command itself. */ | |
1adeb98a FN |
932 | |
933 | void | |
934 | symbol_file_add_main (char *args, int from_tty) | |
935 | { | |
d7db6da9 FN |
936 | symbol_file_add_main_1 (args, from_tty, 0); |
937 | } | |
938 | ||
939 | static void | |
940 | symbol_file_add_main_1 (char *args, int from_tty, int flags) | |
941 | { | |
942 | symbol_file_add (args, from_tty, NULL, 1, flags); | |
943 | ||
944 | #ifdef HPUXHPPA | |
945 | RESET_HP_UX_GLOBALS (); | |
946 | #endif | |
947 | ||
948 | /* Getting new symbols may change our opinion about | |
949 | what is frameless. */ | |
950 | reinit_frame_cache (); | |
951 | ||
952 | set_initial_language (); | |
1adeb98a FN |
953 | } |
954 | ||
955 | void | |
956 | symbol_file_clear (int from_tty) | |
957 | { | |
958 | if ((have_full_symbols () || have_partial_symbols ()) | |
959 | && from_tty | |
960 | && !query ("Discard symbol table from `%s'? ", | |
961 | symfile_objfile->name)) | |
962 | error ("Not confirmed."); | |
963 | free_all_objfiles (); | |
964 | ||
965 | /* solib descriptors may have handles to objfiles. Since their | |
966 | storage has just been released, we'd better wipe the solib | |
967 | descriptors as well. | |
968 | */ | |
969 | #if defined(SOLIB_RESTART) | |
970 | SOLIB_RESTART (); | |
971 | #endif | |
972 | ||
973 | symfile_objfile = NULL; | |
974 | if (from_tty) | |
975 | printf_unfiltered ("No symbol file now.\n"); | |
976 | #ifdef HPUXHPPA | |
977 | RESET_HP_UX_GLOBALS (); | |
978 | #endif | |
979 | } | |
980 | ||
c906108c SS |
981 | /* This is the symbol-file command. Read the file, analyze its |
982 | symbols, and add a struct symtab to a symtab list. The syntax of | |
983 | the command is rather bizarre--(1) buildargv implements various | |
984 | quoting conventions which are undocumented and have little or | |
985 | nothing in common with the way things are quoted (or not quoted) | |
986 | elsewhere in GDB, (2) options are used, which are not generally | |
987 | used in GDB (perhaps "set mapped on", "set readnow on" would be | |
988 | better), (3) the order of options matters, which is contrary to GNU | |
989 | conventions (because it is confusing and inconvenient). */ | |
4da95fc4 EZ |
990 | /* Note: ezannoni 2000-04-17. This function used to have support for |
991 | rombug (see remote-os9k.c). It consisted of a call to target_link() | |
992 | (target.c) to get the address of the text segment from the target, | |
993 | and pass that to symbol_file_add(). This is no longer supported. */ | |
c906108c SS |
994 | |
995 | void | |
fba45db2 | 996 | symbol_file_command (char *args, int from_tty) |
c906108c SS |
997 | { |
998 | char **argv; | |
999 | char *name = NULL; | |
c906108c | 1000 | struct cleanup *cleanups; |
2df3850c | 1001 | int flags = OBJF_USERLOADED; |
c906108c SS |
1002 | |
1003 | dont_repeat (); | |
1004 | ||
1005 | if (args == NULL) | |
1006 | { | |
1adeb98a | 1007 | symbol_file_clear (from_tty); |
c906108c SS |
1008 | } |
1009 | else | |
1010 | { | |
1011 | if ((argv = buildargv (args)) == NULL) | |
1012 | { | |
1013 | nomem (0); | |
1014 | } | |
7a292a7a | 1015 | cleanups = make_cleanup_freeargv (argv); |
c906108c SS |
1016 | while (*argv != NULL) |
1017 | { | |
1018 | if (STREQ (*argv, "-mapped")) | |
4da95fc4 EZ |
1019 | flags |= OBJF_MAPPED; |
1020 | else | |
1021 | if (STREQ (*argv, "-readnow")) | |
2acceee2 | 1022 | flags |= OBJF_READNOW; |
4da95fc4 EZ |
1023 | else |
1024 | if (**argv == '-') | |
1025 | error ("unknown option `%s'", *argv); | |
c5aa993b | 1026 | else |
c5aa993b | 1027 | { |
4da95fc4 | 1028 | name = *argv; |
c906108c | 1029 | |
d7db6da9 | 1030 | symbol_file_add_main_1 (name, from_tty, flags); |
4da95fc4 | 1031 | } |
c906108c SS |
1032 | argv++; |
1033 | } | |
1034 | ||
1035 | if (name == NULL) | |
1036 | { | |
1037 | error ("no symbol file name was specified"); | |
1038 | } | |
c906108c SS |
1039 | do_cleanups (cleanups); |
1040 | } | |
1041 | } | |
1042 | ||
1043 | /* Set the initial language. | |
1044 | ||
1045 | A better solution would be to record the language in the psymtab when reading | |
1046 | partial symbols, and then use it (if known) to set the language. This would | |
1047 | be a win for formats that encode the language in an easily discoverable place, | |
1048 | such as DWARF. For stabs, we can jump through hoops looking for specially | |
1049 | named symbols or try to intuit the language from the specific type of stabs | |
1050 | we find, but we can't do that until later when we read in full symbols. | |
1051 | FIXME. */ | |
1052 | ||
1053 | static void | |
fba45db2 | 1054 | set_initial_language (void) |
c906108c SS |
1055 | { |
1056 | struct partial_symtab *pst; | |
c5aa993b | 1057 | enum language lang = language_unknown; |
c906108c SS |
1058 | |
1059 | pst = find_main_psymtab (); | |
1060 | if (pst != NULL) | |
1061 | { | |
c5aa993b | 1062 | if (pst->filename != NULL) |
c906108c | 1063 | { |
c5aa993b JM |
1064 | lang = deduce_language_from_filename (pst->filename); |
1065 | } | |
c906108c SS |
1066 | if (lang == language_unknown) |
1067 | { | |
c5aa993b JM |
1068 | /* Make C the default language */ |
1069 | lang = language_c; | |
c906108c SS |
1070 | } |
1071 | set_language (lang); | |
1072 | expected_language = current_language; /* Don't warn the user */ | |
1073 | } | |
1074 | } | |
1075 | ||
1076 | /* Open file specified by NAME and hand it off to BFD for preliminary | |
1077 | analysis. Result is a newly initialized bfd *, which includes a newly | |
1078 | malloc'd` copy of NAME (tilde-expanded and made absolute). | |
1079 | In case of trouble, error() is called. */ | |
1080 | ||
1081 | bfd * | |
fba45db2 | 1082 | symfile_bfd_open (char *name) |
c906108c SS |
1083 | { |
1084 | bfd *sym_bfd; | |
1085 | int desc; | |
1086 | char *absolute_name; | |
1087 | ||
1088 | ||
1089 | ||
1090 | name = tilde_expand (name); /* Returns 1st new malloc'd copy */ | |
1091 | ||
1092 | /* Look down path for it, allocate 2nd new malloc'd copy. */ | |
1093 | desc = openp (getenv ("PATH"), 1, name, O_RDONLY | O_BINARY, 0, &absolute_name); | |
608506ed | 1094 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
c906108c SS |
1095 | if (desc < 0) |
1096 | { | |
1097 | char *exename = alloca (strlen (name) + 5); | |
1098 | strcat (strcpy (exename, name), ".exe"); | |
1099 | desc = openp (getenv ("PATH"), 1, exename, O_RDONLY | O_BINARY, | |
c5aa993b | 1100 | 0, &absolute_name); |
c906108c SS |
1101 | } |
1102 | #endif | |
1103 | if (desc < 0) | |
1104 | { | |
b8c9b27d | 1105 | make_cleanup (xfree, name); |
c906108c SS |
1106 | perror_with_name (name); |
1107 | } | |
b8c9b27d | 1108 | xfree (name); /* Free 1st new malloc'd copy */ |
c906108c | 1109 | name = absolute_name; /* Keep 2nd malloc'd copy in bfd */ |
c5aa993b | 1110 | /* It'll be freed in free_objfile(). */ |
c906108c SS |
1111 | |
1112 | sym_bfd = bfd_fdopenr (name, gnutarget, desc); | |
1113 | if (!sym_bfd) | |
1114 | { | |
1115 | close (desc); | |
b8c9b27d | 1116 | make_cleanup (xfree, name); |
c906108c SS |
1117 | error ("\"%s\": can't open to read symbols: %s.", name, |
1118 | bfd_errmsg (bfd_get_error ())); | |
1119 | } | |
81a9a963 | 1120 | sym_bfd->cacheable = 1; |
c906108c SS |
1121 | |
1122 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1123 | { | |
1124 | /* FIXME: should be checking for errors from bfd_close (for one thing, | |
c5aa993b JM |
1125 | on error it does not free all the storage associated with the |
1126 | bfd). */ | |
c906108c | 1127 | bfd_close (sym_bfd); /* This also closes desc */ |
b8c9b27d | 1128 | make_cleanup (xfree, name); |
c906108c SS |
1129 | error ("\"%s\": can't read symbols: %s.", name, |
1130 | bfd_errmsg (bfd_get_error ())); | |
1131 | } | |
1132 | return (sym_bfd); | |
1133 | } | |
1134 | ||
0e931cf0 JB |
1135 | /* Return the section index for the given section name. Return -1 if |
1136 | the section was not found. */ | |
1137 | int | |
1138 | get_section_index (struct objfile *objfile, char *section_name) | |
1139 | { | |
1140 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
1141 | if (sect) | |
1142 | return sect->index; | |
1143 | else | |
1144 | return -1; | |
1145 | } | |
1146 | ||
c906108c SS |
1147 | /* Link a new symtab_fns into the global symtab_fns list. Called on gdb |
1148 | startup by the _initialize routine in each object file format reader, | |
1149 | to register information about each format the the reader is prepared | |
1150 | to handle. */ | |
1151 | ||
1152 | void | |
fba45db2 | 1153 | add_symtab_fns (struct sym_fns *sf) |
c906108c SS |
1154 | { |
1155 | sf->next = symtab_fns; | |
1156 | symtab_fns = sf; | |
1157 | } | |
1158 | ||
1159 | ||
1160 | /* Initialize to read symbols from the symbol file sym_bfd. It either | |
1161 | returns or calls error(). The result is an initialized struct sym_fns | |
1162 | in the objfile structure, that contains cached information about the | |
1163 | symbol file. */ | |
1164 | ||
1165 | static void | |
fba45db2 | 1166 | find_sym_fns (struct objfile *objfile) |
c906108c SS |
1167 | { |
1168 | struct sym_fns *sf; | |
c5aa993b JM |
1169 | enum bfd_flavour our_flavour = bfd_get_flavour (objfile->obfd); |
1170 | char *our_target = bfd_get_target (objfile->obfd); | |
c906108c | 1171 | |
75245b24 MS |
1172 | if (our_flavour == bfd_target_srec_flavour |
1173 | || our_flavour == bfd_target_ihex_flavour | |
1174 | || our_flavour == bfd_target_tekhex_flavour) | |
1175 | return; /* No symbols. */ | |
1176 | ||
c906108c SS |
1177 | /* Special kludge for apollo. See dstread.c. */ |
1178 | if (STREQN (our_target, "apollo", 6)) | |
c5aa993b | 1179 | our_flavour = (enum bfd_flavour) -2; |
c906108c | 1180 | |
c5aa993b | 1181 | for (sf = symtab_fns; sf != NULL; sf = sf->next) |
c906108c | 1182 | { |
c5aa993b | 1183 | if (our_flavour == sf->sym_flavour) |
c906108c | 1184 | { |
c5aa993b | 1185 | objfile->sf = sf; |
c906108c SS |
1186 | return; |
1187 | } | |
1188 | } | |
1189 | error ("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown.", | |
c5aa993b | 1190 | bfd_get_target (objfile->obfd)); |
c906108c SS |
1191 | } |
1192 | \f | |
1193 | /* This function runs the load command of our current target. */ | |
1194 | ||
1195 | static void | |
fba45db2 | 1196 | load_command (char *arg, int from_tty) |
c906108c SS |
1197 | { |
1198 | if (arg == NULL) | |
1199 | arg = get_exec_file (1); | |
1200 | target_load (arg, from_tty); | |
2889e661 JB |
1201 | |
1202 | /* After re-loading the executable, we don't really know which | |
1203 | overlays are mapped any more. */ | |
1204 | overlay_cache_invalid = 1; | |
c906108c SS |
1205 | } |
1206 | ||
1207 | /* This version of "load" should be usable for any target. Currently | |
1208 | it is just used for remote targets, not inftarg.c or core files, | |
1209 | on the theory that only in that case is it useful. | |
1210 | ||
1211 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1212 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1213 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1214 | performance compares. */ | |
917317f4 JM |
1215 | |
1216 | static int download_write_size = 512; | |
1217 | static int validate_download = 0; | |
1218 | ||
e4f9b4d5 MS |
1219 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1220 | ||
1221 | static void | |
1222 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1223 | { | |
1224 | bfd_size_type *sum = data; | |
1225 | ||
1226 | *sum += bfd_get_section_size_before_reloc (asec); | |
1227 | } | |
1228 | ||
1229 | /* Opaque data for load_section_callback. */ | |
1230 | struct load_section_data { | |
1231 | unsigned long load_offset; | |
1232 | unsigned long write_count; | |
1233 | unsigned long data_count; | |
1234 | bfd_size_type total_size; | |
1235 | }; | |
1236 | ||
1237 | /* Callback service function for generic_load (bfd_map_over_sections). */ | |
1238 | ||
1239 | static void | |
1240 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
1241 | { | |
1242 | struct load_section_data *args = data; | |
1243 | ||
1244 | if (bfd_get_section_flags (abfd, asec) & SEC_LOAD) | |
1245 | { | |
1246 | bfd_size_type size = bfd_get_section_size_before_reloc (asec); | |
1247 | if (size > 0) | |
1248 | { | |
1249 | char *buffer; | |
1250 | struct cleanup *old_chain; | |
1251 | CORE_ADDR lma = bfd_section_lma (abfd, asec) + args->load_offset; | |
1252 | bfd_size_type block_size; | |
1253 | int err; | |
1254 | const char *sect_name = bfd_get_section_name (abfd, asec); | |
1255 | bfd_size_type sent; | |
1256 | ||
1257 | if (download_write_size > 0 && size > download_write_size) | |
1258 | block_size = download_write_size; | |
1259 | else | |
1260 | block_size = size; | |
1261 | ||
1262 | buffer = xmalloc (size); | |
1263 | old_chain = make_cleanup (xfree, buffer); | |
1264 | ||
1265 | /* Is this really necessary? I guess it gives the user something | |
1266 | to look at during a long download. */ | |
e4f9b4d5 MS |
1267 | ui_out_message (uiout, 0, "Loading section %s, size 0x%s lma 0x%s\n", |
1268 | sect_name, paddr_nz (size), paddr_nz (lma)); | |
e4f9b4d5 MS |
1269 | |
1270 | bfd_get_section_contents (abfd, asec, buffer, 0, size); | |
1271 | ||
1272 | sent = 0; | |
1273 | do | |
1274 | { | |
1275 | int len; | |
1276 | bfd_size_type this_transfer = size - sent; | |
1277 | ||
1278 | if (this_transfer >= block_size) | |
1279 | this_transfer = block_size; | |
1280 | len = target_write_memory_partial (lma, buffer, | |
1281 | this_transfer, &err); | |
1282 | if (err) | |
1283 | break; | |
1284 | if (validate_download) | |
1285 | { | |
1286 | /* Broken memories and broken monitors manifest | |
1287 | themselves here when bring new computers to | |
1288 | life. This doubles already slow downloads. */ | |
1289 | /* NOTE: cagney/1999-10-18: A more efficient | |
1290 | implementation might add a verify_memory() | |
1291 | method to the target vector and then use | |
1292 | that. remote.c could implement that method | |
1293 | using the ``qCRC'' packet. */ | |
1294 | char *check = xmalloc (len); | |
1295 | struct cleanup *verify_cleanups = | |
1296 | make_cleanup (xfree, check); | |
1297 | ||
1298 | if (target_read_memory (lma, check, len) != 0) | |
1299 | error ("Download verify read failed at 0x%s", | |
1300 | paddr (lma)); | |
1301 | if (memcmp (buffer, check, len) != 0) | |
1302 | error ("Download verify compare failed at 0x%s", | |
1303 | paddr (lma)); | |
1304 | do_cleanups (verify_cleanups); | |
1305 | } | |
1306 | args->data_count += len; | |
1307 | lma += len; | |
1308 | buffer += len; | |
1309 | args->write_count += 1; | |
1310 | sent += len; | |
1311 | if (quit_flag | |
1312 | || (ui_load_progress_hook != NULL | |
1313 | && ui_load_progress_hook (sect_name, sent))) | |
1314 | error ("Canceled the download"); | |
1315 | ||
1316 | if (show_load_progress != NULL) | |
1317 | show_load_progress (sect_name, sent, size, | |
1318 | args->data_count, args->total_size); | |
1319 | } | |
1320 | while (sent < size); | |
1321 | ||
1322 | if (err != 0) | |
1323 | error ("Memory access error while loading section %s.", sect_name); | |
1324 | ||
1325 | do_cleanups (old_chain); | |
1326 | } | |
1327 | } | |
1328 | } | |
1329 | ||
c906108c | 1330 | void |
917317f4 | 1331 | generic_load (char *args, int from_tty) |
c906108c | 1332 | { |
c906108c SS |
1333 | asection *s; |
1334 | bfd *loadfile_bfd; | |
1335 | time_t start_time, end_time; /* Start and end times of download */ | |
917317f4 JM |
1336 | char *filename; |
1337 | struct cleanup *old_cleanups; | |
1338 | char *offptr; | |
e4f9b4d5 MS |
1339 | struct load_section_data cbdata; |
1340 | CORE_ADDR entry; | |
1341 | ||
1342 | cbdata.load_offset = 0; /* Offset to add to vma for each section. */ | |
1343 | cbdata.write_count = 0; /* Number of writes needed. */ | |
1344 | cbdata.data_count = 0; /* Number of bytes written to target memory. */ | |
1345 | cbdata.total_size = 0; /* Total size of all bfd sectors. */ | |
917317f4 JM |
1346 | |
1347 | /* Parse the input argument - the user can specify a load offset as | |
1348 | a second argument. */ | |
1349 | filename = xmalloc (strlen (args) + 1); | |
b8c9b27d | 1350 | old_cleanups = make_cleanup (xfree, filename); |
917317f4 JM |
1351 | strcpy (filename, args); |
1352 | offptr = strchr (filename, ' '); | |
1353 | if (offptr != NULL) | |
1354 | { | |
1355 | char *endptr; | |
ba5f2f8a | 1356 | |
e4f9b4d5 | 1357 | cbdata.load_offset = strtoul (offptr, &endptr, 0); |
917317f4 JM |
1358 | if (offptr == endptr) |
1359 | error ("Invalid download offset:%s\n", offptr); | |
1360 | *offptr = '\0'; | |
1361 | } | |
c906108c | 1362 | else |
e4f9b4d5 | 1363 | cbdata.load_offset = 0; |
c906108c | 1364 | |
917317f4 | 1365 | /* Open the file for loading. */ |
c906108c SS |
1366 | loadfile_bfd = bfd_openr (filename, gnutarget); |
1367 | if (loadfile_bfd == NULL) | |
1368 | { | |
1369 | perror_with_name (filename); | |
1370 | return; | |
1371 | } | |
917317f4 | 1372 | |
c906108c SS |
1373 | /* FIXME: should be checking for errors from bfd_close (for one thing, |
1374 | on error it does not free all the storage associated with the | |
1375 | bfd). */ | |
5c65bbb6 | 1376 | make_cleanup_bfd_close (loadfile_bfd); |
c906108c | 1377 | |
c5aa993b | 1378 | if (!bfd_check_format (loadfile_bfd, bfd_object)) |
c906108c SS |
1379 | { |
1380 | error ("\"%s\" is not an object file: %s", filename, | |
1381 | bfd_errmsg (bfd_get_error ())); | |
1382 | } | |
c5aa993b | 1383 | |
e4f9b4d5 MS |
1384 | bfd_map_over_sections (loadfile_bfd, add_section_size_callback, |
1385 | (void *) &cbdata.total_size); | |
c2d11a7d | 1386 | |
c906108c SS |
1387 | start_time = time (NULL); |
1388 | ||
e4f9b4d5 | 1389 | bfd_map_over_sections (loadfile_bfd, load_section_callback, &cbdata); |
c906108c SS |
1390 | |
1391 | end_time = time (NULL); | |
ba5f2f8a | 1392 | |
e4f9b4d5 | 1393 | entry = bfd_get_start_address (loadfile_bfd); |
e4f9b4d5 MS |
1394 | ui_out_text (uiout, "Start address "); |
1395 | ui_out_field_fmt (uiout, "address", "0x%s", paddr_nz (entry)); | |
1396 | ui_out_text (uiout, ", load size "); | |
1397 | ui_out_field_fmt (uiout, "load-size", "%lu", cbdata.data_count); | |
1398 | ui_out_text (uiout, "\n"); | |
e4f9b4d5 MS |
1399 | /* We were doing this in remote-mips.c, I suspect it is right |
1400 | for other targets too. */ | |
1401 | write_pc (entry); | |
c906108c SS |
1402 | |
1403 | /* FIXME: are we supposed to call symbol_file_add or not? According to | |
1404 | a comment from remote-mips.c (where a call to symbol_file_add was | |
1405 | commented out), making the call confuses GDB if more than one file is | |
1406 | loaded in. remote-nindy.c had no call to symbol_file_add, but remote-vx.c | |
1407 | does. */ | |
1408 | ||
e4f9b4d5 MS |
1409 | print_transfer_performance (gdb_stdout, cbdata.data_count, |
1410 | cbdata.write_count, end_time - start_time); | |
c906108c SS |
1411 | |
1412 | do_cleanups (old_cleanups); | |
1413 | } | |
1414 | ||
1415 | /* Report how fast the transfer went. */ | |
1416 | ||
917317f4 JM |
1417 | /* DEPRECATED: cagney/1999-10-18: report_transfer_performance is being |
1418 | replaced by print_transfer_performance (with a very different | |
1419 | function signature). */ | |
1420 | ||
c906108c | 1421 | void |
fba45db2 KB |
1422 | report_transfer_performance (unsigned long data_count, time_t start_time, |
1423 | time_t end_time) | |
c906108c | 1424 | { |
ba5f2f8a MS |
1425 | print_transfer_performance (gdb_stdout, data_count, |
1426 | end_time - start_time, 0); | |
917317f4 JM |
1427 | } |
1428 | ||
1429 | void | |
d9fcf2fb | 1430 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
1431 | unsigned long data_count, |
1432 | unsigned long write_count, | |
1433 | unsigned long time_count) | |
1434 | { | |
8b93c638 JM |
1435 | ui_out_text (uiout, "Transfer rate: "); |
1436 | if (time_count > 0) | |
1437 | { | |
ba5f2f8a | 1438 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", |
8b93c638 JM |
1439 | (data_count * 8) / time_count); |
1440 | ui_out_text (uiout, " bits/sec"); | |
1441 | } | |
1442 | else | |
1443 | { | |
ba5f2f8a | 1444 | ui_out_field_fmt (uiout, "transferred-bits", "%lu", (data_count * 8)); |
8b93c638 JM |
1445 | ui_out_text (uiout, " bits in <1 sec"); |
1446 | } | |
1447 | if (write_count > 0) | |
1448 | { | |
1449 | ui_out_text (uiout, ", "); | |
ba5f2f8a | 1450 | ui_out_field_fmt (uiout, "write-rate", "%lu", data_count / write_count); |
8b93c638 JM |
1451 | ui_out_text (uiout, " bytes/write"); |
1452 | } | |
1453 | ui_out_text (uiout, ".\n"); | |
c906108c SS |
1454 | } |
1455 | ||
1456 | /* This function allows the addition of incrementally linked object files. | |
1457 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
1458 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
1459 | special case syntax for the rombug target (Rombug is the boot | |
1460 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
1461 | rombug case, the user doesn't need to supply a text address, | |
1462 | instead a call to target_link() (in target.c) would supply the | |
1463 | value to use. We are now discontinuing this type of ad hoc syntax. */ | |
c906108c SS |
1464 | |
1465 | /* ARGSUSED */ | |
1466 | static void | |
fba45db2 | 1467 | add_symbol_file_command (char *args, int from_tty) |
c906108c | 1468 | { |
db162d44 | 1469 | char *filename = NULL; |
2df3850c | 1470 | int flags = OBJF_USERLOADED; |
c906108c | 1471 | char *arg; |
2acceee2 | 1472 | int expecting_option = 0; |
db162d44 | 1473 | int section_index = 0; |
2acceee2 JM |
1474 | int argcnt = 0; |
1475 | int sec_num = 0; | |
1476 | int i; | |
db162d44 EZ |
1477 | int expecting_sec_name = 0; |
1478 | int expecting_sec_addr = 0; | |
1479 | ||
2acceee2 JM |
1480 | struct |
1481 | { | |
2acceee2 JM |
1482 | char *name; |
1483 | char *value; | |
db162d44 EZ |
1484 | } sect_opts[SECT_OFF_MAX]; |
1485 | ||
2acceee2 | 1486 | struct section_addr_info section_addrs; |
3017564a | 1487 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); |
c5aa993b | 1488 | |
c906108c SS |
1489 | dont_repeat (); |
1490 | ||
1491 | if (args == NULL) | |
db162d44 | 1492 | error ("add-symbol-file takes a file name and an address"); |
c906108c SS |
1493 | |
1494 | /* Make a copy of the string that we can safely write into. */ | |
c2d11a7d | 1495 | args = xstrdup (args); |
c906108c | 1496 | |
2acceee2 JM |
1497 | /* Ensure section_addrs is initialized */ |
1498 | memset (§ion_addrs, 0, sizeof (section_addrs)); | |
1499 | ||
2acceee2 | 1500 | while (*args != '\000') |
c906108c | 1501 | { |
db162d44 | 1502 | /* Any leading spaces? */ |
c5aa993b | 1503 | while (isspace (*args)) |
db162d44 EZ |
1504 | args++; |
1505 | ||
1506 | /* Point arg to the beginning of the argument. */ | |
c906108c | 1507 | arg = args; |
db162d44 EZ |
1508 | |
1509 | /* Move args pointer over the argument. */ | |
c5aa993b | 1510 | while ((*args != '\000') && !isspace (*args)) |
db162d44 EZ |
1511 | args++; |
1512 | ||
1513 | /* If there are more arguments, terminate arg and | |
1514 | proceed past it. */ | |
c906108c | 1515 | if (*args != '\000') |
db162d44 EZ |
1516 | *args++ = '\000'; |
1517 | ||
1518 | /* Now process the argument. */ | |
1519 | if (argcnt == 0) | |
c906108c | 1520 | { |
db162d44 EZ |
1521 | /* The first argument is the file name. */ |
1522 | filename = tilde_expand (arg); | |
3017564a | 1523 | make_cleanup (xfree, filename); |
c906108c | 1524 | } |
db162d44 | 1525 | else |
7a78ae4e ND |
1526 | if (argcnt == 1) |
1527 | { | |
1528 | /* The second argument is always the text address at which | |
1529 | to load the program. */ | |
1530 | sect_opts[section_index].name = ".text"; | |
1531 | sect_opts[section_index].value = arg; | |
1532 | section_index++; | |
1533 | } | |
1534 | else | |
1535 | { | |
1536 | /* It's an option (starting with '-') or it's an argument | |
1537 | to an option */ | |
1538 | ||
1539 | if (*arg == '-') | |
1540 | { | |
1541 | if (strcmp (arg, "-mapped") == 0) | |
1542 | flags |= OBJF_MAPPED; | |
1543 | else | |
1544 | if (strcmp (arg, "-readnow") == 0) | |
1545 | flags |= OBJF_READNOW; | |
1546 | else | |
1547 | if (strcmp (arg, "-s") == 0) | |
1548 | { | |
1549 | if (section_index >= SECT_OFF_MAX) | |
1550 | error ("Too many sections specified."); | |
1551 | expecting_sec_name = 1; | |
1552 | expecting_sec_addr = 1; | |
1553 | } | |
1554 | } | |
1555 | else | |
1556 | { | |
1557 | if (expecting_sec_name) | |
db162d44 | 1558 | { |
7a78ae4e ND |
1559 | sect_opts[section_index].name = arg; |
1560 | expecting_sec_name = 0; | |
db162d44 EZ |
1561 | } |
1562 | else | |
7a78ae4e ND |
1563 | if (expecting_sec_addr) |
1564 | { | |
1565 | sect_opts[section_index].value = arg; | |
1566 | expecting_sec_addr = 0; | |
1567 | section_index++; | |
1568 | } | |
1569 | else | |
1570 | error ("USAGE: add-symbol-file <filename> <textaddress> [-mapped] [-readnow] [-s <secname> <addr>]*"); | |
1571 | } | |
1572 | } | |
db162d44 | 1573 | argcnt++; |
c906108c | 1574 | } |
c906108c | 1575 | |
db162d44 EZ |
1576 | /* Print the prompt for the query below. And save the arguments into |
1577 | a sect_addr_info structure to be passed around to other | |
1578 | functions. We have to split this up into separate print | |
1579 | statements because local_hex_string returns a local static | |
1580 | string. */ | |
2acceee2 | 1581 | |
db162d44 EZ |
1582 | printf_filtered ("add symbol table from file \"%s\" at\n", filename); |
1583 | for (i = 0; i < section_index; i++) | |
c906108c | 1584 | { |
db162d44 EZ |
1585 | CORE_ADDR addr; |
1586 | char *val = sect_opts[i].value; | |
1587 | char *sec = sect_opts[i].name; | |
1588 | ||
1589 | val = sect_opts[i].value; | |
1590 | if (val[0] == '0' && val[1] == 'x') | |
1591 | addr = strtoul (val+2, NULL, 16); | |
1592 | else | |
1593 | addr = strtoul (val, NULL, 10); | |
1594 | ||
db162d44 EZ |
1595 | /* Here we store the section offsets in the order they were |
1596 | entered on the command line. */ | |
1597 | section_addrs.other[sec_num].name = sec; | |
1598 | section_addrs.other[sec_num].addr = addr; | |
1599 | printf_filtered ("\t%s_addr = %s\n", | |
1600 | sec, | |
1601 | local_hex_string ((unsigned long)addr)); | |
1602 | sec_num++; | |
1603 | ||
1604 | /* The object's sections are initialized when a | |
1605 | call is made to build_objfile_section_table (objfile). | |
1606 | This happens in reread_symbols. | |
1607 | At this point, we don't know what file type this is, | |
1608 | so we can't determine what section names are valid. */ | |
2acceee2 | 1609 | } |
db162d44 | 1610 | |
2acceee2 | 1611 | if (from_tty && (!query ("%s", ""))) |
c906108c SS |
1612 | error ("Not confirmed."); |
1613 | ||
db162d44 | 1614 | symbol_file_add (filename, from_tty, §ion_addrs, 0, flags); |
c906108c SS |
1615 | |
1616 | /* Getting new symbols may change our opinion about what is | |
1617 | frameless. */ | |
1618 | reinit_frame_cache (); | |
db162d44 | 1619 | do_cleanups (my_cleanups); |
c906108c SS |
1620 | } |
1621 | \f | |
1622 | static void | |
fba45db2 | 1623 | add_shared_symbol_files_command (char *args, int from_tty) |
c906108c SS |
1624 | { |
1625 | #ifdef ADD_SHARED_SYMBOL_FILES | |
1626 | ADD_SHARED_SYMBOL_FILES (args, from_tty); | |
1627 | #else | |
1628 | error ("This command is not available in this configuration of GDB."); | |
c5aa993b | 1629 | #endif |
c906108c SS |
1630 | } |
1631 | \f | |
1632 | /* Re-read symbols if a symbol-file has changed. */ | |
1633 | void | |
fba45db2 | 1634 | reread_symbols (void) |
c906108c SS |
1635 | { |
1636 | struct objfile *objfile; | |
1637 | long new_modtime; | |
1638 | int reread_one = 0; | |
1639 | struct stat new_statbuf; | |
1640 | int res; | |
1641 | ||
1642 | /* With the addition of shared libraries, this should be modified, | |
1643 | the load time should be saved in the partial symbol tables, since | |
1644 | different tables may come from different source files. FIXME. | |
1645 | This routine should then walk down each partial symbol table | |
1646 | and see if the symbol table that it originates from has been changed */ | |
1647 | ||
c5aa993b JM |
1648 | for (objfile = object_files; objfile; objfile = objfile->next) |
1649 | { | |
1650 | if (objfile->obfd) | |
1651 | { | |
c906108c | 1652 | #ifdef IBM6000_TARGET |
c5aa993b JM |
1653 | /* If this object is from a shared library, then you should |
1654 | stat on the library name, not member name. */ | |
c906108c | 1655 | |
c5aa993b JM |
1656 | if (objfile->obfd->my_archive) |
1657 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
1658 | else | |
c906108c | 1659 | #endif |
c5aa993b JM |
1660 | res = stat (objfile->name, &new_statbuf); |
1661 | if (res != 0) | |
c906108c | 1662 | { |
c5aa993b JM |
1663 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
1664 | printf_filtered ("`%s' has disappeared; keeping its symbols.\n", | |
1665 | objfile->name); | |
1666 | continue; | |
c906108c | 1667 | } |
c5aa993b JM |
1668 | new_modtime = new_statbuf.st_mtime; |
1669 | if (new_modtime != objfile->mtime) | |
c906108c | 1670 | { |
c5aa993b JM |
1671 | struct cleanup *old_cleanups; |
1672 | struct section_offsets *offsets; | |
1673 | int num_offsets; | |
c5aa993b JM |
1674 | char *obfd_filename; |
1675 | ||
1676 | printf_filtered ("`%s' has changed; re-reading symbols.\n", | |
1677 | objfile->name); | |
1678 | ||
1679 | /* There are various functions like symbol_file_add, | |
1680 | symfile_bfd_open, syms_from_objfile, etc., which might | |
1681 | appear to do what we want. But they have various other | |
1682 | effects which we *don't* want. So we just do stuff | |
1683 | ourselves. We don't worry about mapped files (for one thing, | |
1684 | any mapped file will be out of date). */ | |
1685 | ||
1686 | /* If we get an error, blow away this objfile (not sure if | |
1687 | that is the correct response for things like shared | |
1688 | libraries). */ | |
74b7792f | 1689 | old_cleanups = make_cleanup_free_objfile (objfile); |
c5aa993b | 1690 | /* We need to do this whenever any symbols go away. */ |
74b7792f | 1691 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c5aa993b JM |
1692 | |
1693 | /* Clean up any state BFD has sitting around. We don't need | |
1694 | to close the descriptor but BFD lacks a way of closing the | |
1695 | BFD without closing the descriptor. */ | |
1696 | obfd_filename = bfd_get_filename (objfile->obfd); | |
1697 | if (!bfd_close (objfile->obfd)) | |
1698 | error ("Can't close BFD for %s: %s", objfile->name, | |
1699 | bfd_errmsg (bfd_get_error ())); | |
1700 | objfile->obfd = bfd_openr (obfd_filename, gnutarget); | |
1701 | if (objfile->obfd == NULL) | |
1702 | error ("Can't open %s to read symbols.", objfile->name); | |
1703 | /* bfd_openr sets cacheable to true, which is what we want. */ | |
1704 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
1705 | error ("Can't read symbols from %s: %s.", objfile->name, | |
1706 | bfd_errmsg (bfd_get_error ())); | |
1707 | ||
1708 | /* Save the offsets, we will nuke them with the rest of the | |
1709 | psymbol_obstack. */ | |
1710 | num_offsets = objfile->num_sections; | |
d4f3574e SS |
1711 | offsets = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); |
1712 | memcpy (offsets, objfile->section_offsets, SIZEOF_SECTION_OFFSETS); | |
c5aa993b JM |
1713 | |
1714 | /* Nuke all the state that we will re-read. Much of the following | |
1715 | code which sets things to NULL really is necessary to tell | |
1716 | other parts of GDB that there is nothing currently there. */ | |
1717 | ||
1718 | /* FIXME: Do we have to free a whole linked list, or is this | |
1719 | enough? */ | |
1720 | if (objfile->global_psymbols.list) | |
aac7f4ea | 1721 | xmfree (objfile->md, objfile->global_psymbols.list); |
c5aa993b JM |
1722 | memset (&objfile->global_psymbols, 0, |
1723 | sizeof (objfile->global_psymbols)); | |
1724 | if (objfile->static_psymbols.list) | |
aac7f4ea | 1725 | xmfree (objfile->md, objfile->static_psymbols.list); |
c5aa993b JM |
1726 | memset (&objfile->static_psymbols, 0, |
1727 | sizeof (objfile->static_psymbols)); | |
1728 | ||
1729 | /* Free the obstacks for non-reusable objfiles */ | |
af5f3db6 AC |
1730 | bcache_xfree (objfile->psymbol_cache); |
1731 | objfile->psymbol_cache = bcache_xmalloc (); | |
1732 | bcache_xfree (objfile->macro_cache); | |
1733 | objfile->macro_cache = bcache_xmalloc (); | |
c5aa993b JM |
1734 | obstack_free (&objfile->psymbol_obstack, 0); |
1735 | obstack_free (&objfile->symbol_obstack, 0); | |
1736 | obstack_free (&objfile->type_obstack, 0); | |
1737 | objfile->sections = NULL; | |
1738 | objfile->symtabs = NULL; | |
1739 | objfile->psymtabs = NULL; | |
1740 | objfile->free_psymtabs = NULL; | |
1741 | objfile->msymbols = NULL; | |
1742 | objfile->minimal_symbol_count = 0; | |
0a83117a MS |
1743 | memset (&objfile->msymbol_hash, 0, |
1744 | sizeof (objfile->msymbol_hash)); | |
1745 | memset (&objfile->msymbol_demangled_hash, 0, | |
1746 | sizeof (objfile->msymbol_demangled_hash)); | |
c5aa993b JM |
1747 | objfile->fundamental_types = NULL; |
1748 | if (objfile->sf != NULL) | |
1749 | { | |
1750 | (*objfile->sf->sym_finish) (objfile); | |
1751 | } | |
1752 | ||
1753 | /* We never make this a mapped file. */ | |
1754 | objfile->md = NULL; | |
1755 | /* obstack_specify_allocation also initializes the obstack so | |
1756 | it is empty. */ | |
af5f3db6 AC |
1757 | objfile->psymbol_cache = bcache_xmalloc (); |
1758 | objfile->macro_cache = bcache_xmalloc (); | |
c5aa993b | 1759 | obstack_specify_allocation (&objfile->psymbol_obstack, 0, 0, |
b8c9b27d | 1760 | xmalloc, xfree); |
c5aa993b | 1761 | obstack_specify_allocation (&objfile->symbol_obstack, 0, 0, |
b8c9b27d | 1762 | xmalloc, xfree); |
c5aa993b | 1763 | obstack_specify_allocation (&objfile->type_obstack, 0, 0, |
b8c9b27d | 1764 | xmalloc, xfree); |
c5aa993b JM |
1765 | if (build_objfile_section_table (objfile)) |
1766 | { | |
1767 | error ("Can't find the file sections in `%s': %s", | |
1768 | objfile->name, bfd_errmsg (bfd_get_error ())); | |
1769 | } | |
1770 | ||
1771 | /* We use the same section offsets as from last time. I'm not | |
1772 | sure whether that is always correct for shared libraries. */ | |
1773 | objfile->section_offsets = (struct section_offsets *) | |
d4f3574e SS |
1774 | obstack_alloc (&objfile->psymbol_obstack, SIZEOF_SECTION_OFFSETS); |
1775 | memcpy (objfile->section_offsets, offsets, SIZEOF_SECTION_OFFSETS); | |
c5aa993b JM |
1776 | objfile->num_sections = num_offsets; |
1777 | ||
1778 | /* What the hell is sym_new_init for, anyway? The concept of | |
1779 | distinguishing between the main file and additional files | |
1780 | in this way seems rather dubious. */ | |
1781 | if (objfile == symfile_objfile) | |
1782 | { | |
1783 | (*objfile->sf->sym_new_init) (objfile); | |
c906108c | 1784 | #ifdef HPUXHPPA |
c5aa993b | 1785 | RESET_HP_UX_GLOBALS (); |
c906108c | 1786 | #endif |
c5aa993b JM |
1787 | } |
1788 | ||
1789 | (*objfile->sf->sym_init) (objfile); | |
b9caf505 | 1790 | clear_complaints (&symfile_complaints, 1, 1); |
c5aa993b JM |
1791 | /* The "mainline" parameter is a hideous hack; I think leaving it |
1792 | zero is OK since dbxread.c also does what it needs to do if | |
1793 | objfile->global_psymbols.size is 0. */ | |
96baa820 | 1794 | (*objfile->sf->sym_read) (objfile, 0); |
c5aa993b JM |
1795 | if (!have_partial_symbols () && !have_full_symbols ()) |
1796 | { | |
1797 | wrap_here (""); | |
1798 | printf_filtered ("(no debugging symbols found)\n"); | |
1799 | wrap_here (""); | |
1800 | } | |
1801 | objfile->flags |= OBJF_SYMS; | |
1802 | ||
1803 | /* We're done reading the symbol file; finish off complaints. */ | |
b9caf505 | 1804 | clear_complaints (&symfile_complaints, 0, 1); |
c906108c | 1805 | |
c5aa993b JM |
1806 | /* Getting new symbols may change our opinion about what is |
1807 | frameless. */ | |
c906108c | 1808 | |
c5aa993b | 1809 | reinit_frame_cache (); |
c906108c | 1810 | |
c5aa993b JM |
1811 | /* Discard cleanups as symbol reading was successful. */ |
1812 | discard_cleanups (old_cleanups); | |
c906108c | 1813 | |
c5aa993b JM |
1814 | /* If the mtime has changed between the time we set new_modtime |
1815 | and now, we *want* this to be out of date, so don't call stat | |
1816 | again now. */ | |
1817 | objfile->mtime = new_modtime; | |
1818 | reread_one = 1; | |
c906108c | 1819 | |
c5aa993b | 1820 | /* Call this after reading in a new symbol table to give target |
38c2ef12 | 1821 | dependent code a crack at the new symbols. For instance, this |
c5aa993b JM |
1822 | could be used to update the values of target-specific symbols GDB |
1823 | needs to keep track of (such as _sigtramp, or whatever). */ | |
c906108c | 1824 | |
c5aa993b JM |
1825 | TARGET_SYMFILE_POSTREAD (objfile); |
1826 | } | |
c906108c SS |
1827 | } |
1828 | } | |
c906108c SS |
1829 | |
1830 | if (reread_one) | |
1831 | clear_symtab_users (); | |
1832 | } | |
c906108c SS |
1833 | \f |
1834 | ||
c5aa993b JM |
1835 | |
1836 | typedef struct | |
1837 | { | |
1838 | char *ext; | |
c906108c | 1839 | enum language lang; |
c5aa993b JM |
1840 | } |
1841 | filename_language; | |
c906108c | 1842 | |
c5aa993b | 1843 | static filename_language *filename_language_table; |
c906108c SS |
1844 | static int fl_table_size, fl_table_next; |
1845 | ||
1846 | static void | |
fba45db2 | 1847 | add_filename_language (char *ext, enum language lang) |
c906108c SS |
1848 | { |
1849 | if (fl_table_next >= fl_table_size) | |
1850 | { | |
1851 | fl_table_size += 10; | |
25bf3106 PM |
1852 | filename_language_table = |
1853 | xrealloc (filename_language_table, | |
1854 | fl_table_size * sizeof (*filename_language_table)); | |
c906108c SS |
1855 | } |
1856 | ||
4fcf66da | 1857 | filename_language_table[fl_table_next].ext = xstrdup (ext); |
c906108c SS |
1858 | filename_language_table[fl_table_next].lang = lang; |
1859 | fl_table_next++; | |
1860 | } | |
1861 | ||
1862 | static char *ext_args; | |
1863 | ||
1864 | static void | |
fba45db2 | 1865 | set_ext_lang_command (char *args, int from_tty) |
c906108c SS |
1866 | { |
1867 | int i; | |
1868 | char *cp = ext_args; | |
1869 | enum language lang; | |
1870 | ||
1871 | /* First arg is filename extension, starting with '.' */ | |
1872 | if (*cp != '.') | |
1873 | error ("'%s': Filename extension must begin with '.'", ext_args); | |
1874 | ||
1875 | /* Find end of first arg. */ | |
c5aa993b | 1876 | while (*cp && !isspace (*cp)) |
c906108c SS |
1877 | cp++; |
1878 | ||
1879 | if (*cp == '\0') | |
1880 | error ("'%s': two arguments required -- filename extension and language", | |
1881 | ext_args); | |
1882 | ||
1883 | /* Null-terminate first arg */ | |
c5aa993b | 1884 | *cp++ = '\0'; |
c906108c SS |
1885 | |
1886 | /* Find beginning of second arg, which should be a source language. */ | |
1887 | while (*cp && isspace (*cp)) | |
1888 | cp++; | |
1889 | ||
1890 | if (*cp == '\0') | |
1891 | error ("'%s': two arguments required -- filename extension and language", | |
1892 | ext_args); | |
1893 | ||
1894 | /* Lookup the language from among those we know. */ | |
1895 | lang = language_enum (cp); | |
1896 | ||
1897 | /* Now lookup the filename extension: do we already know it? */ | |
1898 | for (i = 0; i < fl_table_next; i++) | |
1899 | if (0 == strcmp (ext_args, filename_language_table[i].ext)) | |
1900 | break; | |
1901 | ||
1902 | if (i >= fl_table_next) | |
1903 | { | |
1904 | /* new file extension */ | |
1905 | add_filename_language (ext_args, lang); | |
1906 | } | |
1907 | else | |
1908 | { | |
1909 | /* redefining a previously known filename extension */ | |
1910 | ||
1911 | /* if (from_tty) */ | |
1912 | /* query ("Really make files of type %s '%s'?", */ | |
1913 | /* ext_args, language_str (lang)); */ | |
1914 | ||
b8c9b27d | 1915 | xfree (filename_language_table[i].ext); |
4fcf66da | 1916 | filename_language_table[i].ext = xstrdup (ext_args); |
c906108c SS |
1917 | filename_language_table[i].lang = lang; |
1918 | } | |
1919 | } | |
1920 | ||
1921 | static void | |
fba45db2 | 1922 | info_ext_lang_command (char *args, int from_tty) |
c906108c SS |
1923 | { |
1924 | int i; | |
1925 | ||
1926 | printf_filtered ("Filename extensions and the languages they represent:"); | |
1927 | printf_filtered ("\n\n"); | |
1928 | for (i = 0; i < fl_table_next; i++) | |
c5aa993b JM |
1929 | printf_filtered ("\t%s\t- %s\n", |
1930 | filename_language_table[i].ext, | |
c906108c SS |
1931 | language_str (filename_language_table[i].lang)); |
1932 | } | |
1933 | ||
1934 | static void | |
fba45db2 | 1935 | init_filename_language_table (void) |
c906108c SS |
1936 | { |
1937 | if (fl_table_size == 0) /* protect against repetition */ | |
1938 | { | |
1939 | fl_table_size = 20; | |
1940 | fl_table_next = 0; | |
c5aa993b | 1941 | filename_language_table = |
c906108c | 1942 | xmalloc (fl_table_size * sizeof (*filename_language_table)); |
c5aa993b JM |
1943 | add_filename_language (".c", language_c); |
1944 | add_filename_language (".C", language_cplus); | |
1945 | add_filename_language (".cc", language_cplus); | |
1946 | add_filename_language (".cp", language_cplus); | |
1947 | add_filename_language (".cpp", language_cplus); | |
1948 | add_filename_language (".cxx", language_cplus); | |
1949 | add_filename_language (".c++", language_cplus); | |
1950 | add_filename_language (".java", language_java); | |
c906108c | 1951 | add_filename_language (".class", language_java); |
db034ac5 AC |
1952 | /* OBSOLETE add_filename_language (".ch", language_chill); */ |
1953 | /* OBSOLETE add_filename_language (".c186", language_chill); */ | |
1954 | /* OBSOLETE add_filename_language (".c286", language_chill); */ | |
c5aa993b JM |
1955 | add_filename_language (".f", language_fortran); |
1956 | add_filename_language (".F", language_fortran); | |
1957 | add_filename_language (".s", language_asm); | |
1958 | add_filename_language (".S", language_asm); | |
c6fd39cd PM |
1959 | add_filename_language (".pas", language_pascal); |
1960 | add_filename_language (".p", language_pascal); | |
1961 | add_filename_language (".pp", language_pascal); | |
c906108c SS |
1962 | } |
1963 | } | |
1964 | ||
1965 | enum language | |
fba45db2 | 1966 | deduce_language_from_filename (char *filename) |
c906108c SS |
1967 | { |
1968 | int i; | |
1969 | char *cp; | |
1970 | ||
1971 | if (filename != NULL) | |
1972 | if ((cp = strrchr (filename, '.')) != NULL) | |
1973 | for (i = 0; i < fl_table_next; i++) | |
1974 | if (strcmp (cp, filename_language_table[i].ext) == 0) | |
1975 | return filename_language_table[i].lang; | |
1976 | ||
1977 | return language_unknown; | |
1978 | } | |
1979 | \f | |
1980 | /* allocate_symtab: | |
1981 | ||
1982 | Allocate and partly initialize a new symbol table. Return a pointer | |
1983 | to it. error() if no space. | |
1984 | ||
1985 | Caller must set these fields: | |
c5aa993b JM |
1986 | LINETABLE(symtab) |
1987 | symtab->blockvector | |
1988 | symtab->dirname | |
1989 | symtab->free_code | |
1990 | symtab->free_ptr | |
1991 | possibly free_named_symtabs (symtab->filename); | |
c906108c SS |
1992 | */ |
1993 | ||
1994 | struct symtab * | |
fba45db2 | 1995 | allocate_symtab (char *filename, struct objfile *objfile) |
c906108c SS |
1996 | { |
1997 | register struct symtab *symtab; | |
1998 | ||
1999 | symtab = (struct symtab *) | |
c5aa993b | 2000 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct symtab)); |
c906108c | 2001 | memset (symtab, 0, sizeof (*symtab)); |
c5aa993b JM |
2002 | symtab->filename = obsavestring (filename, strlen (filename), |
2003 | &objfile->symbol_obstack); | |
2004 | symtab->fullname = NULL; | |
2005 | symtab->language = deduce_language_from_filename (filename); | |
2006 | symtab->debugformat = obsavestring ("unknown", 7, | |
2007 | &objfile->symbol_obstack); | |
c906108c SS |
2008 | |
2009 | /* Hook it to the objfile it comes from */ | |
2010 | ||
c5aa993b JM |
2011 | symtab->objfile = objfile; |
2012 | symtab->next = objfile->symtabs; | |
2013 | objfile->symtabs = symtab; | |
c906108c SS |
2014 | |
2015 | /* FIXME: This should go away. It is only defined for the Z8000, | |
2016 | and the Z8000 definition of this macro doesn't have anything to | |
2017 | do with the now-nonexistent EXTRA_SYMTAB_INFO macro, it's just | |
2018 | here for convenience. */ | |
2019 | #ifdef INIT_EXTRA_SYMTAB_INFO | |
2020 | INIT_EXTRA_SYMTAB_INFO (symtab); | |
2021 | #endif | |
2022 | ||
2023 | return (symtab); | |
2024 | } | |
2025 | ||
2026 | struct partial_symtab * | |
fba45db2 | 2027 | allocate_psymtab (char *filename, struct objfile *objfile) |
c906108c SS |
2028 | { |
2029 | struct partial_symtab *psymtab; | |
2030 | ||
c5aa993b | 2031 | if (objfile->free_psymtabs) |
c906108c | 2032 | { |
c5aa993b JM |
2033 | psymtab = objfile->free_psymtabs; |
2034 | objfile->free_psymtabs = psymtab->next; | |
c906108c SS |
2035 | } |
2036 | else | |
2037 | psymtab = (struct partial_symtab *) | |
c5aa993b | 2038 | obstack_alloc (&objfile->psymbol_obstack, |
c906108c SS |
2039 | sizeof (struct partial_symtab)); |
2040 | ||
2041 | memset (psymtab, 0, sizeof (struct partial_symtab)); | |
c5aa993b JM |
2042 | psymtab->filename = obsavestring (filename, strlen (filename), |
2043 | &objfile->psymbol_obstack); | |
2044 | psymtab->symtab = NULL; | |
c906108c SS |
2045 | |
2046 | /* Prepend it to the psymtab list for the objfile it belongs to. | |
2047 | Psymtabs are searched in most recent inserted -> least recent | |
2048 | inserted order. */ | |
2049 | ||
c5aa993b JM |
2050 | psymtab->objfile = objfile; |
2051 | psymtab->next = objfile->psymtabs; | |
2052 | objfile->psymtabs = psymtab; | |
c906108c SS |
2053 | #if 0 |
2054 | { | |
2055 | struct partial_symtab **prev_pst; | |
c5aa993b JM |
2056 | psymtab->objfile = objfile; |
2057 | psymtab->next = NULL; | |
2058 | prev_pst = &(objfile->psymtabs); | |
c906108c | 2059 | while ((*prev_pst) != NULL) |
c5aa993b | 2060 | prev_pst = &((*prev_pst)->next); |
c906108c | 2061 | (*prev_pst) = psymtab; |
c5aa993b | 2062 | } |
c906108c | 2063 | #endif |
c5aa993b | 2064 | |
c906108c SS |
2065 | return (psymtab); |
2066 | } | |
2067 | ||
2068 | void | |
fba45db2 | 2069 | discard_psymtab (struct partial_symtab *pst) |
c906108c SS |
2070 | { |
2071 | struct partial_symtab **prev_pst; | |
2072 | ||
2073 | /* From dbxread.c: | |
2074 | Empty psymtabs happen as a result of header files which don't | |
2075 | have any symbols in them. There can be a lot of them. But this | |
2076 | check is wrong, in that a psymtab with N_SLINE entries but | |
2077 | nothing else is not empty, but we don't realize that. Fixing | |
2078 | that without slowing things down might be tricky. */ | |
2079 | ||
2080 | /* First, snip it out of the psymtab chain */ | |
2081 | ||
2082 | prev_pst = &(pst->objfile->psymtabs); | |
2083 | while ((*prev_pst) != pst) | |
2084 | prev_pst = &((*prev_pst)->next); | |
2085 | (*prev_pst) = pst->next; | |
2086 | ||
2087 | /* Next, put it on a free list for recycling */ | |
2088 | ||
2089 | pst->next = pst->objfile->free_psymtabs; | |
2090 | pst->objfile->free_psymtabs = pst; | |
2091 | } | |
c906108c | 2092 | \f |
c5aa993b | 2093 | |
c906108c SS |
2094 | /* Reset all data structures in gdb which may contain references to symbol |
2095 | table data. */ | |
2096 | ||
2097 | void | |
fba45db2 | 2098 | clear_symtab_users (void) |
c906108c SS |
2099 | { |
2100 | /* Someday, we should do better than this, by only blowing away | |
2101 | the things that really need to be blown. */ | |
2102 | clear_value_history (); | |
2103 | clear_displays (); | |
2104 | clear_internalvars (); | |
2105 | breakpoint_re_set (); | |
2106 | set_default_breakpoint (0, 0, 0, 0); | |
0378c332 | 2107 | clear_current_source_symtab_and_line (); |
c906108c | 2108 | clear_pc_function_cache (); |
11cf8741 JM |
2109 | if (target_new_objfile_hook) |
2110 | target_new_objfile_hook (NULL); | |
c906108c SS |
2111 | } |
2112 | ||
74b7792f AC |
2113 | static void |
2114 | clear_symtab_users_cleanup (void *ignore) | |
2115 | { | |
2116 | clear_symtab_users (); | |
2117 | } | |
2118 | ||
c906108c SS |
2119 | /* clear_symtab_users_once: |
2120 | ||
2121 | This function is run after symbol reading, or from a cleanup. | |
2122 | If an old symbol table was obsoleted, the old symbol table | |
2123 | has been blown away, but the other GDB data structures that may | |
2124 | reference it have not yet been cleared or re-directed. (The old | |
2125 | symtab was zapped, and the cleanup queued, in free_named_symtab() | |
2126 | below.) | |
2127 | ||
2128 | This function can be queued N times as a cleanup, or called | |
2129 | directly; it will do all the work the first time, and then will be a | |
2130 | no-op until the next time it is queued. This works by bumping a | |
2131 | counter at queueing time. Much later when the cleanup is run, or at | |
2132 | the end of symbol processing (in case the cleanup is discarded), if | |
2133 | the queued count is greater than the "done-count", we do the work | |
2134 | and set the done-count to the queued count. If the queued count is | |
2135 | less than or equal to the done-count, we just ignore the call. This | |
2136 | is needed because reading a single .o file will often replace many | |
2137 | symtabs (one per .h file, for example), and we don't want to reset | |
2138 | the breakpoints N times in the user's face. | |
2139 | ||
2140 | The reason we both queue a cleanup, and call it directly after symbol | |
2141 | reading, is because the cleanup protects us in case of errors, but is | |
2142 | discarded if symbol reading is successful. */ | |
2143 | ||
2144 | #if 0 | |
2145 | /* FIXME: As free_named_symtabs is currently a big noop this function | |
2146 | is no longer needed. */ | |
a14ed312 | 2147 | static void clear_symtab_users_once (void); |
c906108c SS |
2148 | |
2149 | static int clear_symtab_users_queued; | |
2150 | static int clear_symtab_users_done; | |
2151 | ||
2152 | static void | |
fba45db2 | 2153 | clear_symtab_users_once (void) |
c906108c SS |
2154 | { |
2155 | /* Enforce once-per-`do_cleanups'-semantics */ | |
2156 | if (clear_symtab_users_queued <= clear_symtab_users_done) | |
2157 | return; | |
2158 | clear_symtab_users_done = clear_symtab_users_queued; | |
2159 | ||
2160 | clear_symtab_users (); | |
2161 | } | |
2162 | #endif | |
2163 | ||
2164 | /* Delete the specified psymtab, and any others that reference it. */ | |
2165 | ||
2166 | static void | |
fba45db2 | 2167 | cashier_psymtab (struct partial_symtab *pst) |
c906108c SS |
2168 | { |
2169 | struct partial_symtab *ps, *pprev = NULL; | |
2170 | int i; | |
2171 | ||
2172 | /* Find its previous psymtab in the chain */ | |
c5aa993b JM |
2173 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) |
2174 | { | |
2175 | if (ps == pst) | |
2176 | break; | |
2177 | pprev = ps; | |
2178 | } | |
c906108c | 2179 | |
c5aa993b JM |
2180 | if (ps) |
2181 | { | |
2182 | /* Unhook it from the chain. */ | |
2183 | if (ps == pst->objfile->psymtabs) | |
2184 | pst->objfile->psymtabs = ps->next; | |
2185 | else | |
2186 | pprev->next = ps->next; | |
2187 | ||
2188 | /* FIXME, we can't conveniently deallocate the entries in the | |
2189 | partial_symbol lists (global_psymbols/static_psymbols) that | |
2190 | this psymtab points to. These just take up space until all | |
2191 | the psymtabs are reclaimed. Ditto the dependencies list and | |
2192 | filename, which are all in the psymbol_obstack. */ | |
2193 | ||
2194 | /* We need to cashier any psymtab that has this one as a dependency... */ | |
2195 | again: | |
2196 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) | |
2197 | { | |
2198 | for (i = 0; i < ps->number_of_dependencies; i++) | |
2199 | { | |
2200 | if (ps->dependencies[i] == pst) | |
2201 | { | |
2202 | cashier_psymtab (ps); | |
2203 | goto again; /* Must restart, chain has been munged. */ | |
2204 | } | |
2205 | } | |
c906108c | 2206 | } |
c906108c | 2207 | } |
c906108c SS |
2208 | } |
2209 | ||
2210 | /* If a symtab or psymtab for filename NAME is found, free it along | |
2211 | with any dependent breakpoints, displays, etc. | |
2212 | Used when loading new versions of object modules with the "add-file" | |
2213 | command. This is only called on the top-level symtab or psymtab's name; | |
2214 | it is not called for subsidiary files such as .h files. | |
2215 | ||
2216 | Return value is 1 if we blew away the environment, 0 if not. | |
7e73cedf | 2217 | FIXME. The return value appears to never be used. |
c906108c SS |
2218 | |
2219 | FIXME. I think this is not the best way to do this. We should | |
2220 | work on being gentler to the environment while still cleaning up | |
2221 | all stray pointers into the freed symtab. */ | |
2222 | ||
2223 | int | |
fba45db2 | 2224 | free_named_symtabs (char *name) |
c906108c SS |
2225 | { |
2226 | #if 0 | |
2227 | /* FIXME: With the new method of each objfile having it's own | |
2228 | psymtab list, this function needs serious rethinking. In particular, | |
2229 | why was it ever necessary to toss psymtabs with specific compilation | |
2230 | unit filenames, as opposed to all psymtabs from a particular symbol | |
2231 | file? -- fnf | |
2232 | Well, the answer is that some systems permit reloading of particular | |
2233 | compilation units. We want to blow away any old info about these | |
2234 | compilation units, regardless of which objfiles they arrived in. --gnu. */ | |
2235 | ||
2236 | register struct symtab *s; | |
2237 | register struct symtab *prev; | |
2238 | register struct partial_symtab *ps; | |
2239 | struct blockvector *bv; | |
2240 | int blewit = 0; | |
2241 | ||
2242 | /* We only wack things if the symbol-reload switch is set. */ | |
2243 | if (!symbol_reloading) | |
2244 | return 0; | |
2245 | ||
2246 | /* Some symbol formats have trouble providing file names... */ | |
2247 | if (name == 0 || *name == '\0') | |
2248 | return 0; | |
2249 | ||
2250 | /* Look for a psymtab with the specified name. */ | |
2251 | ||
2252 | again2: | |
c5aa993b JM |
2253 | for (ps = partial_symtab_list; ps; ps = ps->next) |
2254 | { | |
2255 | if (STREQ (name, ps->filename)) | |
2256 | { | |
2257 | cashier_psymtab (ps); /* Blow it away...and its little dog, too. */ | |
2258 | goto again2; /* Must restart, chain has been munged */ | |
2259 | } | |
c906108c | 2260 | } |
c906108c SS |
2261 | |
2262 | /* Look for a symtab with the specified name. */ | |
2263 | ||
2264 | for (s = symtab_list; s; s = s->next) | |
2265 | { | |
2266 | if (STREQ (name, s->filename)) | |
2267 | break; | |
2268 | prev = s; | |
2269 | } | |
2270 | ||
2271 | if (s) | |
2272 | { | |
2273 | if (s == symtab_list) | |
2274 | symtab_list = s->next; | |
2275 | else | |
2276 | prev->next = s->next; | |
2277 | ||
2278 | /* For now, queue a delete for all breakpoints, displays, etc., whether | |
c5aa993b JM |
2279 | or not they depend on the symtab being freed. This should be |
2280 | changed so that only those data structures affected are deleted. */ | |
c906108c SS |
2281 | |
2282 | /* But don't delete anything if the symtab is empty. | |
c5aa993b JM |
2283 | This test is necessary due to a bug in "dbxread.c" that |
2284 | causes empty symtabs to be created for N_SO symbols that | |
2285 | contain the pathname of the object file. (This problem | |
2286 | has been fixed in GDB 3.9x). */ | |
c906108c SS |
2287 | |
2288 | bv = BLOCKVECTOR (s); | |
2289 | if (BLOCKVECTOR_NBLOCKS (bv) > 2 | |
2290 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) | |
2291 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK))) | |
2292 | { | |
b9caf505 AC |
2293 | complaint (&symfile_complaints, "Replacing old symbols for `%s'", |
2294 | name); | |
c906108c SS |
2295 | clear_symtab_users_queued++; |
2296 | make_cleanup (clear_symtab_users_once, 0); | |
2297 | blewit = 1; | |
c5aa993b JM |
2298 | } |
2299 | else | |
2300 | { | |
b9caf505 AC |
2301 | complaint (&symfile_complaints, "Empty symbol table found for `%s'", |
2302 | name); | |
c906108c SS |
2303 | } |
2304 | ||
2305 | free_symtab (s); | |
2306 | } | |
2307 | else | |
2308 | { | |
2309 | /* It is still possible that some breakpoints will be affected | |
c5aa993b JM |
2310 | even though no symtab was found, since the file might have |
2311 | been compiled without debugging, and hence not be associated | |
2312 | with a symtab. In order to handle this correctly, we would need | |
2313 | to keep a list of text address ranges for undebuggable files. | |
2314 | For now, we do nothing, since this is a fairly obscure case. */ | |
c906108c SS |
2315 | ; |
2316 | } | |
2317 | ||
2318 | /* FIXME, what about the minimal symbol table? */ | |
2319 | return blewit; | |
2320 | #else | |
2321 | return (0); | |
2322 | #endif | |
2323 | } | |
2324 | \f | |
2325 | /* Allocate and partially fill a partial symtab. It will be | |
2326 | completely filled at the end of the symbol list. | |
2327 | ||
d4f3574e | 2328 | FILENAME is the name of the symbol-file we are reading from. */ |
c906108c SS |
2329 | |
2330 | struct partial_symtab * | |
fba45db2 KB |
2331 | start_psymtab_common (struct objfile *objfile, |
2332 | struct section_offsets *section_offsets, char *filename, | |
2333 | CORE_ADDR textlow, struct partial_symbol **global_syms, | |
2334 | struct partial_symbol **static_syms) | |
c906108c SS |
2335 | { |
2336 | struct partial_symtab *psymtab; | |
2337 | ||
2338 | psymtab = allocate_psymtab (filename, objfile); | |
c5aa993b JM |
2339 | psymtab->section_offsets = section_offsets; |
2340 | psymtab->textlow = textlow; | |
2341 | psymtab->texthigh = psymtab->textlow; /* default */ | |
2342 | psymtab->globals_offset = global_syms - objfile->global_psymbols.list; | |
2343 | psymtab->statics_offset = static_syms - objfile->static_psymbols.list; | |
c906108c SS |
2344 | return (psymtab); |
2345 | } | |
2346 | \f | |
2347 | /* Add a symbol with a long value to a psymtab. | |
2348 | Since one arg is a struct, we pass in a ptr and deref it (sigh). */ | |
2349 | ||
2350 | void | |
fba45db2 KB |
2351 | add_psymbol_to_list (char *name, int namelength, namespace_enum namespace, |
2352 | enum address_class class, | |
2353 | struct psymbol_allocation_list *list, long val, /* Value as a long */ | |
2354 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ | |
2355 | enum language language, struct objfile *objfile) | |
c906108c SS |
2356 | { |
2357 | register struct partial_symbol *psym; | |
2358 | char *buf = alloca (namelength + 1); | |
2359 | /* psymbol is static so that there will be no uninitialized gaps in the | |
2360 | structure which might contain random data, causing cache misses in | |
2361 | bcache. */ | |
2362 | static struct partial_symbol psymbol; | |
2363 | ||
2364 | /* Create local copy of the partial symbol */ | |
2365 | memcpy (buf, name, namelength); | |
2366 | buf[namelength] = '\0'; | |
af5f3db6 | 2367 | SYMBOL_NAME (&psymbol) = bcache (buf, namelength + 1, objfile->psymbol_cache); |
c906108c SS |
2368 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ |
2369 | if (val != 0) | |
2370 | { | |
2371 | SYMBOL_VALUE (&psymbol) = val; | |
2372 | } | |
2373 | else | |
2374 | { | |
2375 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; | |
2376 | } | |
2377 | SYMBOL_SECTION (&psymbol) = 0; | |
2378 | SYMBOL_LANGUAGE (&psymbol) = language; | |
2379 | PSYMBOL_NAMESPACE (&psymbol) = namespace; | |
2380 | PSYMBOL_CLASS (&psymbol) = class; | |
2381 | SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol, language); | |
2382 | ||
2383 | /* Stash the partial symbol away in the cache */ | |
af5f3db6 | 2384 | psym = bcache (&psymbol, sizeof (struct partial_symbol), objfile->psymbol_cache); |
c906108c SS |
2385 | |
2386 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ | |
2387 | if (list->next >= list->list + list->size) | |
2388 | { | |
2389 | extend_psymbol_list (list, objfile); | |
2390 | } | |
2391 | *list->next++ = psym; | |
2392 | OBJSTAT (objfile, n_psyms++); | |
2393 | } | |
2394 | ||
2395 | /* Add a symbol with a long value to a psymtab. This differs from | |
2396 | * add_psymbol_to_list above in taking both a mangled and a demangled | |
2397 | * name. */ | |
2398 | ||
2399 | void | |
fba45db2 KB |
2400 | add_psymbol_with_dem_name_to_list (char *name, int namelength, char *dem_name, |
2401 | int dem_namelength, namespace_enum namespace, | |
2402 | enum address_class class, | |
2403 | struct psymbol_allocation_list *list, long val, /* Value as a long */ | |
2404 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ | |
2405 | enum language language, | |
2406 | struct objfile *objfile) | |
c906108c SS |
2407 | { |
2408 | register struct partial_symbol *psym; | |
2409 | char *buf = alloca (namelength + 1); | |
2410 | /* psymbol is static so that there will be no uninitialized gaps in the | |
2411 | structure which might contain random data, causing cache misses in | |
2412 | bcache. */ | |
2413 | static struct partial_symbol psymbol; | |
2414 | ||
2415 | /* Create local copy of the partial symbol */ | |
2416 | ||
2417 | memcpy (buf, name, namelength); | |
2418 | buf[namelength] = '\0'; | |
af5f3db6 | 2419 | SYMBOL_NAME (&psymbol) = bcache (buf, namelength + 1, objfile->psymbol_cache); |
c906108c SS |
2420 | |
2421 | buf = alloca (dem_namelength + 1); | |
2422 | memcpy (buf, dem_name, dem_namelength); | |
2423 | buf[dem_namelength] = '\0'; | |
c5aa993b | 2424 | |
c906108c SS |
2425 | switch (language) |
2426 | { | |
c5aa993b JM |
2427 | case language_c: |
2428 | case language_cplus: | |
2429 | SYMBOL_CPLUS_DEMANGLED_NAME (&psymbol) = | |
af5f3db6 | 2430 | bcache (buf, dem_namelength + 1, objfile->psymbol_cache); |
c5aa993b | 2431 | break; |
db034ac5 AC |
2432 | /* OBSOLETE case language_chill: */ |
2433 | /* OBSOLETE SYMBOL_CHILL_DEMANGLED_NAME (&psymbol) = */ | |
2434 | /* OBSOLETE bcache (buf, dem_namelength + 1, objfile->psymbol_cache); */ | |
c5aa993b | 2435 | |
c906108c SS |
2436 | /* FIXME What should be done for the default case? Ignoring for now. */ |
2437 | } | |
2438 | ||
2439 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ | |
2440 | if (val != 0) | |
2441 | { | |
2442 | SYMBOL_VALUE (&psymbol) = val; | |
2443 | } | |
2444 | else | |
2445 | { | |
2446 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; | |
2447 | } | |
2448 | SYMBOL_SECTION (&psymbol) = 0; | |
2449 | SYMBOL_LANGUAGE (&psymbol) = language; | |
2450 | PSYMBOL_NAMESPACE (&psymbol) = namespace; | |
2451 | PSYMBOL_CLASS (&psymbol) = class; | |
2452 | SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol, language); | |
2453 | ||
2454 | /* Stash the partial symbol away in the cache */ | |
af5f3db6 | 2455 | psym = bcache (&psymbol, sizeof (struct partial_symbol), objfile->psymbol_cache); |
c906108c SS |
2456 | |
2457 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ | |
2458 | if (list->next >= list->list + list->size) | |
2459 | { | |
2460 | extend_psymbol_list (list, objfile); | |
2461 | } | |
2462 | *list->next++ = psym; | |
2463 | OBJSTAT (objfile, n_psyms++); | |
2464 | } | |
2465 | ||
2466 | /* Initialize storage for partial symbols. */ | |
2467 | ||
2468 | void | |
fba45db2 | 2469 | init_psymbol_list (struct objfile *objfile, int total_symbols) |
c906108c SS |
2470 | { |
2471 | /* Free any previously allocated psymbol lists. */ | |
c5aa993b JM |
2472 | |
2473 | if (objfile->global_psymbols.list) | |
c906108c | 2474 | { |
aac7f4ea | 2475 | xmfree (objfile->md, (PTR) objfile->global_psymbols.list); |
c906108c | 2476 | } |
c5aa993b | 2477 | if (objfile->static_psymbols.list) |
c906108c | 2478 | { |
aac7f4ea | 2479 | xmfree (objfile->md, (PTR) objfile->static_psymbols.list); |
c906108c | 2480 | } |
c5aa993b | 2481 | |
c906108c SS |
2482 | /* Current best guess is that approximately a twentieth |
2483 | of the total symbols (in a debugging file) are global or static | |
2484 | oriented symbols */ | |
c906108c | 2485 | |
c5aa993b JM |
2486 | objfile->global_psymbols.size = total_symbols / 10; |
2487 | objfile->static_psymbols.size = total_symbols / 10; | |
2488 | ||
2489 | if (objfile->global_psymbols.size > 0) | |
c906108c | 2490 | { |
c5aa993b JM |
2491 | objfile->global_psymbols.next = |
2492 | objfile->global_psymbols.list = (struct partial_symbol **) | |
2493 | xmmalloc (objfile->md, (objfile->global_psymbols.size | |
2494 | * sizeof (struct partial_symbol *))); | |
c906108c | 2495 | } |
c5aa993b | 2496 | if (objfile->static_psymbols.size > 0) |
c906108c | 2497 | { |
c5aa993b JM |
2498 | objfile->static_psymbols.next = |
2499 | objfile->static_psymbols.list = (struct partial_symbol **) | |
2500 | xmmalloc (objfile->md, (objfile->static_psymbols.size | |
2501 | * sizeof (struct partial_symbol *))); | |
c906108c SS |
2502 | } |
2503 | } | |
2504 | ||
2505 | /* OVERLAYS: | |
2506 | The following code implements an abstraction for debugging overlay sections. | |
2507 | ||
2508 | The target model is as follows: | |
2509 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2510 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2511 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2512 | sections, one by one, from the load address into the VMA address. |
c906108c | 2513 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2514 | sections should be considered to be mapped from the VMA to the LMA. |
2515 | This information is used for symbol lookup, and memory read/write. | |
2516 | For instance, if a section has been mapped then its contents | |
2517 | should be read from the VMA, otherwise from the LMA. | |
c906108c SS |
2518 | |
2519 | Two levels of debugger support for overlays are available. One is | |
2520 | "manual", in which the debugger relies on the user to tell it which | |
2521 | overlays are currently mapped. This level of support is | |
2522 | implemented entirely in the core debugger, and the information about | |
2523 | whether a section is mapped is kept in the objfile->obj_section table. | |
2524 | ||
2525 | The second level of support is "automatic", and is only available if | |
2526 | the target-specific code provides functionality to read the target's | |
2527 | overlay mapping table, and translate its contents for the debugger | |
2528 | (by updating the mapped state information in the obj_section tables). | |
2529 | ||
2530 | The interface is as follows: | |
c5aa993b JM |
2531 | User commands: |
2532 | overlay map <name> -- tell gdb to consider this section mapped | |
2533 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2534 | overlay list -- list the sections that GDB thinks are mapped | |
2535 | overlay read-target -- get the target's state of what's mapped | |
2536 | overlay off/manual/auto -- set overlay debugging state | |
2537 | Functional interface: | |
2538 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2539 | section, return that section. | |
2540 | find_pc_overlay(pc): find any overlay section that contains | |
2541 | the pc, either in its VMA or its LMA | |
2542 | overlay_is_mapped(sect): true if overlay is marked as mapped | |
2543 | section_is_overlay(sect): true if section's VMA != LMA | |
2544 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2545 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 2546 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
2547 | overlay_mapped_address(...): map an address from section's LMA to VMA |
2548 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2549 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2550 | either in VMA or LMA depending on whether | |
2551 | the symbol's section is currently mapped | |
c906108c SS |
2552 | */ |
2553 | ||
2554 | /* Overlay debugging state: */ | |
2555 | ||
d874f1e2 | 2556 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c906108c SS |
2557 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state */ |
2558 | ||
2559 | /* Target vector for refreshing overlay mapped state */ | |
a14ed312 | 2560 | static void simple_overlay_update (struct obj_section *); |
507f3c78 | 2561 | void (*target_overlay_update) (struct obj_section *) = simple_overlay_update; |
c906108c SS |
2562 | |
2563 | /* Function: section_is_overlay (SECTION) | |
2564 | Returns true if SECTION has VMA not equal to LMA, ie. | |
2565 | SECTION is loaded at an address different from where it will "run". */ | |
2566 | ||
2567 | int | |
fba45db2 | 2568 | section_is_overlay (asection *section) |
c906108c | 2569 | { |
fbd35540 MS |
2570 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ |
2571 | ||
c906108c SS |
2572 | if (overlay_debugging) |
2573 | if (section && section->lma != 0 && | |
2574 | section->vma != section->lma) | |
2575 | return 1; | |
2576 | ||
2577 | return 0; | |
2578 | } | |
2579 | ||
2580 | /* Function: overlay_invalidate_all (void) | |
2581 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
2582 | ||
2583 | static void | |
fba45db2 | 2584 | overlay_invalidate_all (void) |
c906108c | 2585 | { |
c5aa993b | 2586 | struct objfile *objfile; |
c906108c SS |
2587 | struct obj_section *sect; |
2588 | ||
2589 | ALL_OBJSECTIONS (objfile, sect) | |
2590 | if (section_is_overlay (sect->the_bfd_section)) | |
c5aa993b | 2591 | sect->ovly_mapped = -1; |
c906108c SS |
2592 | } |
2593 | ||
2594 | /* Function: overlay_is_mapped (SECTION) | |
2595 | Returns true if section is an overlay, and is currently mapped. | |
2596 | Private: public access is thru function section_is_mapped. | |
2597 | ||
2598 | Access to the ovly_mapped flag is restricted to this function, so | |
2599 | that we can do automatic update. If the global flag | |
2600 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
2601 | overlay_invalidate_all. If the mapped state of the particular | |
2602 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
2603 | ||
c5aa993b | 2604 | static int |
fba45db2 | 2605 | overlay_is_mapped (struct obj_section *osect) |
c906108c SS |
2606 | { |
2607 | if (osect == 0 || !section_is_overlay (osect->the_bfd_section)) | |
2608 | return 0; | |
2609 | ||
c5aa993b | 2610 | switch (overlay_debugging) |
c906108c SS |
2611 | { |
2612 | default: | |
d874f1e2 | 2613 | case ovly_off: |
c5aa993b | 2614 | return 0; /* overlay debugging off */ |
d874f1e2 | 2615 | case ovly_auto: /* overlay debugging automatic */ |
c906108c | 2616 | /* Unles there is a target_overlay_update function, |
c5aa993b | 2617 | there's really nothing useful to do here (can't really go auto) */ |
c906108c SS |
2618 | if (target_overlay_update) |
2619 | { | |
2620 | if (overlay_cache_invalid) | |
2621 | { | |
2622 | overlay_invalidate_all (); | |
2623 | overlay_cache_invalid = 0; | |
2624 | } | |
2625 | if (osect->ovly_mapped == -1) | |
2626 | (*target_overlay_update) (osect); | |
2627 | } | |
2628 | /* fall thru to manual case */ | |
d874f1e2 | 2629 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
2630 | return osect->ovly_mapped == 1; |
2631 | } | |
2632 | } | |
2633 | ||
2634 | /* Function: section_is_mapped | |
2635 | Returns true if section is an overlay, and is currently mapped. */ | |
2636 | ||
2637 | int | |
fba45db2 | 2638 | section_is_mapped (asection *section) |
c906108c | 2639 | { |
c5aa993b | 2640 | struct objfile *objfile; |
c906108c SS |
2641 | struct obj_section *osect; |
2642 | ||
2643 | if (overlay_debugging) | |
2644 | if (section && section_is_overlay (section)) | |
2645 | ALL_OBJSECTIONS (objfile, osect) | |
2646 | if (osect->the_bfd_section == section) | |
c5aa993b | 2647 | return overlay_is_mapped (osect); |
c906108c SS |
2648 | |
2649 | return 0; | |
2650 | } | |
2651 | ||
2652 | /* Function: pc_in_unmapped_range | |
2653 | If PC falls into the lma range of SECTION, return true, else false. */ | |
2654 | ||
2655 | CORE_ADDR | |
fba45db2 | 2656 | pc_in_unmapped_range (CORE_ADDR pc, asection *section) |
c906108c | 2657 | { |
fbd35540 MS |
2658 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ |
2659 | ||
c906108c SS |
2660 | int size; |
2661 | ||
2662 | if (overlay_debugging) | |
2663 | if (section && section_is_overlay (section)) | |
2664 | { | |
2665 | size = bfd_get_section_size_before_reloc (section); | |
2666 | if (section->lma <= pc && pc < section->lma + size) | |
2667 | return 1; | |
2668 | } | |
2669 | return 0; | |
2670 | } | |
2671 | ||
2672 | /* Function: pc_in_mapped_range | |
2673 | If PC falls into the vma range of SECTION, return true, else false. */ | |
2674 | ||
2675 | CORE_ADDR | |
fba45db2 | 2676 | pc_in_mapped_range (CORE_ADDR pc, asection *section) |
c906108c | 2677 | { |
fbd35540 MS |
2678 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ |
2679 | ||
c906108c SS |
2680 | int size; |
2681 | ||
2682 | if (overlay_debugging) | |
2683 | if (section && section_is_overlay (section)) | |
2684 | { | |
2685 | size = bfd_get_section_size_before_reloc (section); | |
2686 | if (section->vma <= pc && pc < section->vma + size) | |
2687 | return 1; | |
2688 | } | |
2689 | return 0; | |
2690 | } | |
2691 | ||
9ec8e6a0 JB |
2692 | |
2693 | /* Return true if the mapped ranges of sections A and B overlap, false | |
2694 | otherwise. */ | |
2695 | int | |
2696 | sections_overlap (asection *a, asection *b) | |
2697 | { | |
fbd35540 MS |
2698 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ |
2699 | ||
9ec8e6a0 JB |
2700 | CORE_ADDR a_start = a->vma; |
2701 | CORE_ADDR a_end = a->vma + bfd_get_section_size_before_reloc (a); | |
2702 | CORE_ADDR b_start = b->vma; | |
2703 | CORE_ADDR b_end = b->vma + bfd_get_section_size_before_reloc (b); | |
2704 | ||
2705 | return (a_start < b_end && b_start < a_end); | |
2706 | } | |
2707 | ||
c906108c SS |
2708 | /* Function: overlay_unmapped_address (PC, SECTION) |
2709 | Returns the address corresponding to PC in the unmapped (load) range. | |
2710 | May be the same as PC. */ | |
2711 | ||
2712 | CORE_ADDR | |
fba45db2 | 2713 | overlay_unmapped_address (CORE_ADDR pc, asection *section) |
c906108c | 2714 | { |
fbd35540 MS |
2715 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ |
2716 | ||
c906108c SS |
2717 | if (overlay_debugging) |
2718 | if (section && section_is_overlay (section) && | |
2719 | pc_in_mapped_range (pc, section)) | |
2720 | return pc + section->lma - section->vma; | |
2721 | ||
2722 | return pc; | |
2723 | } | |
2724 | ||
2725 | /* Function: overlay_mapped_address (PC, SECTION) | |
2726 | Returns the address corresponding to PC in the mapped (runtime) range. | |
2727 | May be the same as PC. */ | |
2728 | ||
2729 | CORE_ADDR | |
fba45db2 | 2730 | overlay_mapped_address (CORE_ADDR pc, asection *section) |
c906108c | 2731 | { |
fbd35540 MS |
2732 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ |
2733 | ||
c906108c SS |
2734 | if (overlay_debugging) |
2735 | if (section && section_is_overlay (section) && | |
2736 | pc_in_unmapped_range (pc, section)) | |
2737 | return pc + section->vma - section->lma; | |
2738 | ||
2739 | return pc; | |
2740 | } | |
2741 | ||
2742 | ||
2743 | /* Function: symbol_overlayed_address | |
2744 | Return one of two addresses (relative to the VMA or to the LMA), | |
2745 | depending on whether the section is mapped or not. */ | |
2746 | ||
c5aa993b | 2747 | CORE_ADDR |
fba45db2 | 2748 | symbol_overlayed_address (CORE_ADDR address, asection *section) |
c906108c SS |
2749 | { |
2750 | if (overlay_debugging) | |
2751 | { | |
2752 | /* If the symbol has no section, just return its regular address. */ | |
2753 | if (section == 0) | |
2754 | return address; | |
2755 | /* If the symbol's section is not an overlay, just return its address */ | |
2756 | if (!section_is_overlay (section)) | |
2757 | return address; | |
2758 | /* If the symbol's section is mapped, just return its address */ | |
2759 | if (section_is_mapped (section)) | |
2760 | return address; | |
2761 | /* | |
2762 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
2763 | * then return its LOADED address rather than its vma address!! | |
2764 | */ | |
2765 | return overlay_unmapped_address (address, section); | |
2766 | } | |
2767 | return address; | |
2768 | } | |
2769 | ||
2770 | /* Function: find_pc_overlay (PC) | |
2771 | Return the best-match overlay section for PC: | |
2772 | If PC matches a mapped overlay section's VMA, return that section. | |
2773 | Else if PC matches an unmapped section's VMA, return that section. | |
2774 | Else if PC matches an unmapped section's LMA, return that section. */ | |
2775 | ||
2776 | asection * | |
fba45db2 | 2777 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 2778 | { |
c5aa993b | 2779 | struct objfile *objfile; |
c906108c SS |
2780 | struct obj_section *osect, *best_match = NULL; |
2781 | ||
2782 | if (overlay_debugging) | |
2783 | ALL_OBJSECTIONS (objfile, osect) | |
2784 | if (section_is_overlay (osect->the_bfd_section)) | |
c5aa993b JM |
2785 | { |
2786 | if (pc_in_mapped_range (pc, osect->the_bfd_section)) | |
2787 | { | |
2788 | if (overlay_is_mapped (osect)) | |
2789 | return osect->the_bfd_section; | |
2790 | else | |
2791 | best_match = osect; | |
2792 | } | |
2793 | else if (pc_in_unmapped_range (pc, osect->the_bfd_section)) | |
2794 | best_match = osect; | |
2795 | } | |
c906108c SS |
2796 | return best_match ? best_match->the_bfd_section : NULL; |
2797 | } | |
2798 | ||
2799 | /* Function: find_pc_mapped_section (PC) | |
2800 | If PC falls into the VMA address range of an overlay section that is | |
2801 | currently marked as MAPPED, return that section. Else return NULL. */ | |
2802 | ||
2803 | asection * | |
fba45db2 | 2804 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 2805 | { |
c5aa993b | 2806 | struct objfile *objfile; |
c906108c SS |
2807 | struct obj_section *osect; |
2808 | ||
2809 | if (overlay_debugging) | |
2810 | ALL_OBJSECTIONS (objfile, osect) | |
2811 | if (pc_in_mapped_range (pc, osect->the_bfd_section) && | |
2812 | overlay_is_mapped (osect)) | |
c5aa993b | 2813 | return osect->the_bfd_section; |
c906108c SS |
2814 | |
2815 | return NULL; | |
2816 | } | |
2817 | ||
2818 | /* Function: list_overlays_command | |
2819 | Print a list of mapped sections and their PC ranges */ | |
2820 | ||
2821 | void | |
fba45db2 | 2822 | list_overlays_command (char *args, int from_tty) |
c906108c | 2823 | { |
c5aa993b JM |
2824 | int nmapped = 0; |
2825 | struct objfile *objfile; | |
c906108c SS |
2826 | struct obj_section *osect; |
2827 | ||
2828 | if (overlay_debugging) | |
2829 | ALL_OBJSECTIONS (objfile, osect) | |
2830 | if (overlay_is_mapped (osect)) | |
c5aa993b JM |
2831 | { |
2832 | const char *name; | |
2833 | bfd_vma lma, vma; | |
2834 | int size; | |
2835 | ||
2836 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
2837 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
2838 | size = bfd_get_section_size_before_reloc (osect->the_bfd_section); | |
2839 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); | |
2840 | ||
2841 | printf_filtered ("Section %s, loaded at ", name); | |
2842 | print_address_numeric (lma, 1, gdb_stdout); | |
2843 | puts_filtered (" - "); | |
2844 | print_address_numeric (lma + size, 1, gdb_stdout); | |
2845 | printf_filtered (", mapped at "); | |
2846 | print_address_numeric (vma, 1, gdb_stdout); | |
2847 | puts_filtered (" - "); | |
2848 | print_address_numeric (vma + size, 1, gdb_stdout); | |
2849 | puts_filtered ("\n"); | |
2850 | ||
2851 | nmapped++; | |
2852 | } | |
c906108c SS |
2853 | if (nmapped == 0) |
2854 | printf_filtered ("No sections are mapped.\n"); | |
2855 | } | |
2856 | ||
2857 | /* Function: map_overlay_command | |
2858 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
2859 | ||
2860 | void | |
fba45db2 | 2861 | map_overlay_command (char *args, int from_tty) |
c906108c | 2862 | { |
c5aa993b JM |
2863 | struct objfile *objfile, *objfile2; |
2864 | struct obj_section *sec, *sec2; | |
2865 | asection *bfdsec; | |
c906108c SS |
2866 | |
2867 | if (!overlay_debugging) | |
515ad16c EZ |
2868 | error ("\ |
2869 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ | |
2870 | the 'overlay manual' command."); | |
c906108c SS |
2871 | |
2872 | if (args == 0 || *args == 0) | |
2873 | error ("Argument required: name of an overlay section"); | |
2874 | ||
2875 | /* First, find a section matching the user supplied argument */ | |
2876 | ALL_OBJSECTIONS (objfile, sec) | |
2877 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
2878 | { |
2879 | /* Now, check to see if the section is an overlay. */ | |
2880 | bfdsec = sec->the_bfd_section; | |
2881 | if (!section_is_overlay (bfdsec)) | |
2882 | continue; /* not an overlay section */ | |
2883 | ||
2884 | /* Mark the overlay as "mapped" */ | |
2885 | sec->ovly_mapped = 1; | |
2886 | ||
2887 | /* Next, make a pass and unmap any sections that are | |
2888 | overlapped by this new section: */ | |
2889 | ALL_OBJSECTIONS (objfile2, sec2) | |
9ec8e6a0 JB |
2890 | if (sec2->ovly_mapped |
2891 | && sec != sec2 | |
2892 | && sec->the_bfd_section != sec2->the_bfd_section | |
2893 | && sections_overlap (sec->the_bfd_section, | |
2894 | sec2->the_bfd_section)) | |
c5aa993b JM |
2895 | { |
2896 | if (info_verbose) | |
2897 | printf_filtered ("Note: section %s unmapped by overlap\n", | |
2898 | bfd_section_name (objfile->obfd, | |
2899 | sec2->the_bfd_section)); | |
2900 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2 */ | |
2901 | } | |
2902 | return; | |
2903 | } | |
c906108c SS |
2904 | error ("No overlay section called %s", args); |
2905 | } | |
2906 | ||
2907 | /* Function: unmap_overlay_command | |
2908 | Mark the overlay section as unmapped | |
2909 | (ie. resident in its LMA address range, rather than the VMA range). */ | |
2910 | ||
2911 | void | |
fba45db2 | 2912 | unmap_overlay_command (char *args, int from_tty) |
c906108c | 2913 | { |
c5aa993b | 2914 | struct objfile *objfile; |
c906108c SS |
2915 | struct obj_section *sec; |
2916 | ||
2917 | if (!overlay_debugging) | |
515ad16c EZ |
2918 | error ("\ |
2919 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ | |
2920 | the 'overlay manual' command."); | |
c906108c SS |
2921 | |
2922 | if (args == 0 || *args == 0) | |
2923 | error ("Argument required: name of an overlay section"); | |
2924 | ||
2925 | /* First, find a section matching the user supplied argument */ | |
2926 | ALL_OBJSECTIONS (objfile, sec) | |
2927 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
2928 | { |
2929 | if (!sec->ovly_mapped) | |
2930 | error ("Section %s is not mapped", args); | |
2931 | sec->ovly_mapped = 0; | |
2932 | return; | |
2933 | } | |
c906108c SS |
2934 | error ("No overlay section called %s", args); |
2935 | } | |
2936 | ||
2937 | /* Function: overlay_auto_command | |
2938 | A utility command to turn on overlay debugging. | |
2939 | Possibly this should be done via a set/show command. */ | |
2940 | ||
2941 | static void | |
fba45db2 | 2942 | overlay_auto_command (char *args, int from_tty) |
c906108c | 2943 | { |
d874f1e2 | 2944 | overlay_debugging = ovly_auto; |
1900040c | 2945 | enable_overlay_breakpoints (); |
c906108c SS |
2946 | if (info_verbose) |
2947 | printf_filtered ("Automatic overlay debugging enabled."); | |
2948 | } | |
2949 | ||
2950 | /* Function: overlay_manual_command | |
2951 | A utility command to turn on overlay debugging. | |
2952 | Possibly this should be done via a set/show command. */ | |
2953 | ||
2954 | static void | |
fba45db2 | 2955 | overlay_manual_command (char *args, int from_tty) |
c906108c | 2956 | { |
d874f1e2 | 2957 | overlay_debugging = ovly_on; |
1900040c | 2958 | disable_overlay_breakpoints (); |
c906108c SS |
2959 | if (info_verbose) |
2960 | printf_filtered ("Overlay debugging enabled."); | |
2961 | } | |
2962 | ||
2963 | /* Function: overlay_off_command | |
2964 | A utility command to turn on overlay debugging. | |
2965 | Possibly this should be done via a set/show command. */ | |
2966 | ||
2967 | static void | |
fba45db2 | 2968 | overlay_off_command (char *args, int from_tty) |
c906108c | 2969 | { |
d874f1e2 | 2970 | overlay_debugging = ovly_off; |
1900040c | 2971 | disable_overlay_breakpoints (); |
c906108c SS |
2972 | if (info_verbose) |
2973 | printf_filtered ("Overlay debugging disabled."); | |
2974 | } | |
2975 | ||
2976 | static void | |
fba45db2 | 2977 | overlay_load_command (char *args, int from_tty) |
c906108c SS |
2978 | { |
2979 | if (target_overlay_update) | |
2980 | (*target_overlay_update) (NULL); | |
2981 | else | |
2982 | error ("This target does not know how to read its overlay state."); | |
2983 | } | |
2984 | ||
2985 | /* Function: overlay_command | |
2986 | A place-holder for a mis-typed command */ | |
2987 | ||
2988 | /* Command list chain containing all defined "overlay" subcommands. */ | |
2989 | struct cmd_list_element *overlaylist; | |
2990 | ||
2991 | static void | |
fba45db2 | 2992 | overlay_command (char *args, int from_tty) |
c906108c | 2993 | { |
c5aa993b | 2994 | printf_unfiltered |
c906108c SS |
2995 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
2996 | help_list (overlaylist, "overlay ", -1, gdb_stdout); | |
2997 | } | |
2998 | ||
2999 | ||
3000 | /* Target Overlays for the "Simplest" overlay manager: | |
3001 | ||
3002 | This is GDB's default target overlay layer. It works with the | |
3003 | minimal overlay manager supplied as an example by Cygnus. The | |
3004 | entry point is via a function pointer "target_overlay_update", | |
3005 | so targets that use a different runtime overlay manager can | |
3006 | substitute their own overlay_update function and take over the | |
3007 | function pointer. | |
3008 | ||
3009 | The overlay_update function pokes around in the target's data structures | |
3010 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3011 | this information. | |
3012 | ||
3013 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3014 | unsigned _novlys; /# number of overlay sections #/ |
3015 | unsigned _ovly_table[_novlys][4] = { | |
3016 | {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/ | |
3017 | {..., ..., ..., ...}, | |
3018 | } | |
3019 | unsigned _novly_regions; /# number of overlay regions #/ | |
3020 | unsigned _ovly_region_table[_novly_regions][3] = { | |
3021 | {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ | |
3022 | {..., ..., ...}, | |
3023 | } | |
c906108c SS |
3024 | These functions will attempt to update GDB's mappedness state in the |
3025 | symbol section table, based on the target's mappedness state. | |
3026 | ||
3027 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3028 | attempt to detect when the cached copy is invalidated. The main | |
3029 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3030 | the cached table and re-reads only the entry for that section from | |
3031 | the target (whenever possible). | |
3032 | */ | |
3033 | ||
3034 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3035 | static unsigned (*cache_ovly_table)[4] = 0; |
c906108c | 3036 | #if 0 |
c5aa993b | 3037 | static unsigned (*cache_ovly_region_table)[3] = 0; |
c906108c | 3038 | #endif |
c5aa993b | 3039 | static unsigned cache_novlys = 0; |
c906108c | 3040 | #if 0 |
c5aa993b | 3041 | static unsigned cache_novly_regions = 0; |
c906108c SS |
3042 | #endif |
3043 | static CORE_ADDR cache_ovly_table_base = 0; | |
3044 | #if 0 | |
3045 | static CORE_ADDR cache_ovly_region_table_base = 0; | |
3046 | #endif | |
c5aa993b JM |
3047 | enum ovly_index |
3048 | { | |
3049 | VMA, SIZE, LMA, MAPPED | |
3050 | }; | |
c906108c SS |
3051 | #define TARGET_LONG_BYTES (TARGET_LONG_BIT / TARGET_CHAR_BIT) |
3052 | ||
3053 | /* Throw away the cached copy of _ovly_table */ | |
3054 | static void | |
fba45db2 | 3055 | simple_free_overlay_table (void) |
c906108c SS |
3056 | { |
3057 | if (cache_ovly_table) | |
b8c9b27d | 3058 | xfree (cache_ovly_table); |
c5aa993b | 3059 | cache_novlys = 0; |
c906108c SS |
3060 | cache_ovly_table = NULL; |
3061 | cache_ovly_table_base = 0; | |
3062 | } | |
3063 | ||
3064 | #if 0 | |
3065 | /* Throw away the cached copy of _ovly_region_table */ | |
3066 | static void | |
fba45db2 | 3067 | simple_free_overlay_region_table (void) |
c906108c SS |
3068 | { |
3069 | if (cache_ovly_region_table) | |
b8c9b27d | 3070 | xfree (cache_ovly_region_table); |
c5aa993b | 3071 | cache_novly_regions = 0; |
c906108c SS |
3072 | cache_ovly_region_table = NULL; |
3073 | cache_ovly_region_table_base = 0; | |
3074 | } | |
3075 | #endif | |
3076 | ||
3077 | /* Read an array of ints from the target into a local buffer. | |
3078 | Convert to host order. int LEN is number of ints */ | |
3079 | static void | |
fba45db2 | 3080 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, int len) |
c906108c | 3081 | { |
34c0bd93 | 3082 | /* FIXME (alloca): Not safe if array is very large. */ |
c906108c | 3083 | char *buf = alloca (len * TARGET_LONG_BYTES); |
c5aa993b | 3084 | int i; |
c906108c SS |
3085 | |
3086 | read_memory (memaddr, buf, len * TARGET_LONG_BYTES); | |
3087 | for (i = 0; i < len; i++) | |
c5aa993b | 3088 | myaddr[i] = extract_unsigned_integer (TARGET_LONG_BYTES * i + buf, |
c906108c SS |
3089 | TARGET_LONG_BYTES); |
3090 | } | |
3091 | ||
3092 | /* Find and grab a copy of the target _ovly_table | |
3093 | (and _novlys, which is needed for the table's size) */ | |
c5aa993b | 3094 | static int |
fba45db2 | 3095 | simple_read_overlay_table (void) |
c906108c | 3096 | { |
0d43edd1 | 3097 | struct minimal_symbol *novlys_msym, *ovly_table_msym; |
c906108c SS |
3098 | |
3099 | simple_free_overlay_table (); | |
9b27852e | 3100 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
0d43edd1 | 3101 | if (! novlys_msym) |
c906108c | 3102 | { |
0d43edd1 JB |
3103 | error ("Error reading inferior's overlay table: " |
3104 | "couldn't find `_novlys' variable\n" | |
3105 | "in inferior. Use `overlay manual' mode."); | |
3106 | return 0; | |
c906108c | 3107 | } |
0d43edd1 | 3108 | |
9b27852e | 3109 | ovly_table_msym = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
0d43edd1 JB |
3110 | if (! ovly_table_msym) |
3111 | { | |
3112 | error ("Error reading inferior's overlay table: couldn't find " | |
3113 | "`_ovly_table' array\n" | |
3114 | "in inferior. Use `overlay manual' mode."); | |
3115 | return 0; | |
3116 | } | |
3117 | ||
3118 | cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (novlys_msym), 4); | |
3119 | cache_ovly_table | |
3120 | = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); | |
3121 | cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (ovly_table_msym); | |
3122 | read_target_long_array (cache_ovly_table_base, | |
3123 | (int *) cache_ovly_table, | |
3124 | cache_novlys * 4); | |
3125 | ||
c5aa993b | 3126 | return 1; /* SUCCESS */ |
c906108c SS |
3127 | } |
3128 | ||
3129 | #if 0 | |
3130 | /* Find and grab a copy of the target _ovly_region_table | |
3131 | (and _novly_regions, which is needed for the table's size) */ | |
c5aa993b | 3132 | static int |
fba45db2 | 3133 | simple_read_overlay_region_table (void) |
c906108c SS |
3134 | { |
3135 | struct minimal_symbol *msym; | |
3136 | ||
3137 | simple_free_overlay_region_table (); | |
9b27852e | 3138 | msym = lookup_minimal_symbol ("_novly_regions", NULL, NULL); |
c906108c SS |
3139 | if (msym != NULL) |
3140 | cache_novly_regions = read_memory_integer (SYMBOL_VALUE_ADDRESS (msym), 4); | |
c5aa993b JM |
3141 | else |
3142 | return 0; /* failure */ | |
c906108c SS |
3143 | cache_ovly_region_table = (void *) xmalloc (cache_novly_regions * 12); |
3144 | if (cache_ovly_region_table != NULL) | |
3145 | { | |
9b27852e | 3146 | msym = lookup_minimal_symbol ("_ovly_region_table", NULL, NULL); |
c906108c SS |
3147 | if (msym != NULL) |
3148 | { | |
3149 | cache_ovly_region_table_base = SYMBOL_VALUE_ADDRESS (msym); | |
c5aa993b JM |
3150 | read_target_long_array (cache_ovly_region_table_base, |
3151 | (int *) cache_ovly_region_table, | |
c906108c SS |
3152 | cache_novly_regions * 3); |
3153 | } | |
c5aa993b JM |
3154 | else |
3155 | return 0; /* failure */ | |
c906108c | 3156 | } |
c5aa993b JM |
3157 | else |
3158 | return 0; /* failure */ | |
3159 | return 1; /* SUCCESS */ | |
c906108c SS |
3160 | } |
3161 | #endif | |
3162 | ||
3163 | /* Function: simple_overlay_update_1 | |
3164 | A helper function for simple_overlay_update. Assuming a cached copy | |
3165 | of _ovly_table exists, look through it to find an entry whose vma, | |
3166 | lma and size match those of OSECT. Re-read the entry and make sure | |
3167 | it still matches OSECT (else the table may no longer be valid). | |
3168 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3169 | success, 0 for failure. */ | |
3170 | ||
3171 | static int | |
fba45db2 | 3172 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c SS |
3173 | { |
3174 | int i, size; | |
fbd35540 MS |
3175 | bfd *obfd = osect->objfile->obfd; |
3176 | asection *bsect = osect->the_bfd_section; | |
c906108c SS |
3177 | |
3178 | size = bfd_get_section_size_before_reloc (osect->the_bfd_section); | |
3179 | for (i = 0; i < cache_novlys; i++) | |
fbd35540 MS |
3180 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3181 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3182 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3183 | { |
3184 | read_target_long_array (cache_ovly_table_base + i * TARGET_LONG_BYTES, | |
3185 | (int *) cache_ovly_table[i], 4); | |
fbd35540 MS |
3186 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3187 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3188 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3189 | { |
3190 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3191 | return 1; | |
3192 | } | |
fbd35540 | 3193 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3194 | return 0; |
3195 | } | |
3196 | return 0; | |
3197 | } | |
3198 | ||
3199 | /* Function: simple_overlay_update | |
3200 | If OSECT is NULL, then update all sections' mapped state | |
3201 | (after re-reading the entire target _ovly_table). | |
3202 | If OSECT is non-NULL, then try to find a matching entry in the | |
3203 | cached ovly_table and update only OSECT's mapped state. | |
3204 | If a cached entry can't be found or the cache isn't valid, then | |
3205 | re-read the entire cache, and go ahead and update all sections. */ | |
3206 | ||
3207 | static void | |
fba45db2 | 3208 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3209 | { |
c5aa993b | 3210 | struct objfile *objfile; |
c906108c SS |
3211 | |
3212 | /* Were we given an osect to look up? NULL means do all of them. */ | |
3213 | if (osect) | |
3214 | /* Have we got a cached copy of the target's overlay table? */ | |
3215 | if (cache_ovly_table != NULL) | |
3216 | /* Does its cached location match what's currently in the symtab? */ | |
c5aa993b | 3217 | if (cache_ovly_table_base == |
9b27852e | 3218 | SYMBOL_VALUE_ADDRESS (lookup_minimal_symbol ("_ovly_table", NULL, NULL))) |
c906108c SS |
3219 | /* Then go ahead and try to look up this single section in the cache */ |
3220 | if (simple_overlay_update_1 (osect)) | |
3221 | /* Found it! We're done. */ | |
3222 | return; | |
3223 | ||
3224 | /* Cached table no good: need to read the entire table anew. | |
3225 | Or else we want all the sections, in which case it's actually | |
3226 | more efficient to read the whole table in one block anyway. */ | |
3227 | ||
0d43edd1 JB |
3228 | if (! simple_read_overlay_table ()) |
3229 | return; | |
3230 | ||
c906108c SS |
3231 | /* Now may as well update all sections, even if only one was requested. */ |
3232 | ALL_OBJSECTIONS (objfile, osect) | |
3233 | if (section_is_overlay (osect->the_bfd_section)) | |
c5aa993b JM |
3234 | { |
3235 | int i, size; | |
fbd35540 MS |
3236 | bfd *obfd = osect->objfile->obfd; |
3237 | asection *bsect = osect->the_bfd_section; | |
c5aa993b JM |
3238 | |
3239 | size = bfd_get_section_size_before_reloc (osect->the_bfd_section); | |
3240 | for (i = 0; i < cache_novlys; i++) | |
fbd35540 MS |
3241 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3242 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3243 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
3244 | { /* obj_section matches i'th entry in ovly_table */ | |
c5aa993b JM |
3245 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; |
3246 | break; /* finished with inner for loop: break out */ | |
3247 | } | |
3248 | } | |
c906108c SS |
3249 | } |
3250 | ||
3251 | ||
3252 | void | |
fba45db2 | 3253 | _initialize_symfile (void) |
c906108c SS |
3254 | { |
3255 | struct cmd_list_element *c; | |
c5aa993b | 3256 | |
c906108c | 3257 | c = add_cmd ("symbol-file", class_files, symbol_file_command, |
c5aa993b | 3258 | "Load symbol table from executable file FILE.\n\ |
c906108c SS |
3259 | The `file' command can also load symbol tables, as well as setting the file\n\ |
3260 | to execute.", &cmdlist); | |
5ba2abeb | 3261 | set_cmd_completer (c, filename_completer); |
c906108c SS |
3262 | |
3263 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, | |
db162d44 | 3264 | "Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR> ...]\n\ |
c906108c | 3265 | Load the symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
2acceee2 | 3266 | ADDR is the starting address of the file's text.\n\ |
db162d44 EZ |
3267 | The optional arguments are section-name section-address pairs and\n\ |
3268 | should be specified if the data and bss segments are not contiguous\n\ | |
d4654627 | 3269 | with the text. SECT is a section name to be loaded at SECT_ADDR.", |
c906108c | 3270 | &cmdlist); |
5ba2abeb | 3271 | set_cmd_completer (c, filename_completer); |
c906108c SS |
3272 | |
3273 | c = add_cmd ("add-shared-symbol-files", class_files, | |
3274 | add_shared_symbol_files_command, | |
3275 | "Load the symbols from shared objects in the dynamic linker's link map.", | |
c5aa993b | 3276 | &cmdlist); |
c906108c SS |
3277 | c = add_alias_cmd ("assf", "add-shared-symbol-files", class_files, 1, |
3278 | &cmdlist); | |
3279 | ||
3280 | c = add_cmd ("load", class_files, load_command, | |
c5aa993b | 3281 | "Dynamically load FILE into the running program, and record its symbols\n\ |
c906108c | 3282 | for access from GDB.", &cmdlist); |
5ba2abeb | 3283 | set_cmd_completer (c, filename_completer); |
c906108c SS |
3284 | |
3285 | add_show_from_set | |
3286 | (add_set_cmd ("symbol-reloading", class_support, var_boolean, | |
c5aa993b JM |
3287 | (char *) &symbol_reloading, |
3288 | "Set dynamic symbol table reloading multiple times in one run.", | |
c906108c SS |
3289 | &setlist), |
3290 | &showlist); | |
3291 | ||
c5aa993b JM |
3292 | add_prefix_cmd ("overlay", class_support, overlay_command, |
3293 | "Commands for debugging overlays.", &overlaylist, | |
c906108c SS |
3294 | "overlay ", 0, &cmdlist); |
3295 | ||
3296 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3297 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3298 | ||
c5aa993b | 3299 | add_cmd ("map-overlay", class_support, map_overlay_command, |
c906108c SS |
3300 | "Assert that an overlay section is mapped.", &overlaylist); |
3301 | ||
c5aa993b | 3302 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
c906108c SS |
3303 | "Assert that an overlay section is unmapped.", &overlaylist); |
3304 | ||
c5aa993b | 3305 | add_cmd ("list-overlays", class_support, list_overlays_command, |
c906108c SS |
3306 | "List mappings of overlay sections.", &overlaylist); |
3307 | ||
c5aa993b | 3308 | add_cmd ("manual", class_support, overlay_manual_command, |
c906108c | 3309 | "Enable overlay debugging.", &overlaylist); |
c5aa993b | 3310 | add_cmd ("off", class_support, overlay_off_command, |
c906108c | 3311 | "Disable overlay debugging.", &overlaylist); |
c5aa993b | 3312 | add_cmd ("auto", class_support, overlay_auto_command, |
c906108c | 3313 | "Enable automatic overlay debugging.", &overlaylist); |
c5aa993b | 3314 | add_cmd ("load-target", class_support, overlay_load_command, |
c906108c SS |
3315 | "Read the overlay mapping state from the target.", &overlaylist); |
3316 | ||
3317 | /* Filename extension to source language lookup table: */ | |
3318 | init_filename_language_table (); | |
3319 | c = add_set_cmd ("extension-language", class_files, var_string_noescape, | |
c5aa993b | 3320 | (char *) &ext_args, |
c906108c SS |
3321 | "Set mapping between filename extension and source language.\n\ |
3322 | Usage: set extension-language .foo bar", | |
c5aa993b | 3323 | &setlist); |
9f60d481 | 3324 | set_cmd_cfunc (c, set_ext_lang_command); |
c906108c | 3325 | |
c5aa993b | 3326 | add_info ("extensions", info_ext_lang_command, |
c906108c | 3327 | "All filename extensions associated with a source language."); |
917317f4 JM |
3328 | |
3329 | add_show_from_set | |
3330 | (add_set_cmd ("download-write-size", class_obscure, | |
3331 | var_integer, (char *) &download_write_size, | |
3332 | "Set the write size used when downloading a program.\n" | |
3333 | "Only used when downloading a program onto a remote\n" | |
3334 | "target. Specify zero, or a negative value, to disable\n" | |
3335 | "blocked writes. The actual size of each transfer is also\n" | |
3336 | "limited by the size of the target packet and the memory\n" | |
3337 | "cache.\n", | |
3338 | &setlist), | |
3339 | &showlist); | |
c906108c | 3340 | } |