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c906108c SS |
1 | /* Generic symbol file reading for the GNU debugger, GDB. |
2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998 | |
3 | Free Software Foundation, Inc. | |
4 | Contributed by Cygnus Support, using pieces from other GDB modules. | |
5 | ||
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
c906108c | 12 | |
c5aa993b JM |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
c906108c | 17 | |
c5aa993b JM |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
22 | |
23 | #include "defs.h" | |
24 | #include "symtab.h" | |
25 | #include "gdbtypes.h" | |
26 | #include "gdbcore.h" | |
27 | #include "frame.h" | |
28 | #include "target.h" | |
29 | #include "value.h" | |
30 | #include "symfile.h" | |
31 | #include "objfiles.h" | |
32 | #include "gdbcmd.h" | |
33 | #include "breakpoint.h" | |
34 | #include "language.h" | |
35 | #include "complaints.h" | |
36 | #include "demangle.h" | |
c5aa993b | 37 | #include "inferior.h" /* for write_pc */ |
c906108c SS |
38 | #include "gdb-stabs.h" |
39 | #include "obstack.h" | |
40 | ||
41 | #include <assert.h> | |
42 | #include <sys/types.h> | |
43 | #include <fcntl.h> | |
44 | #include "gdb_string.h" | |
45 | #include "gdb_stat.h" | |
46 | #include <ctype.h> | |
47 | #include <time.h> | |
c906108c SS |
48 | |
49 | #ifndef O_BINARY | |
50 | #define O_BINARY 0 | |
51 | #endif | |
52 | ||
53 | #ifdef HPUXHPPA | |
54 | ||
55 | /* Some HP-UX related globals to clear when a new "main" | |
56 | symbol file is loaded. HP-specific. */ | |
57 | ||
58 | extern int hp_som_som_object_present; | |
59 | extern int hp_cxx_exception_support_initialized; | |
60 | #define RESET_HP_UX_GLOBALS() do {\ | |
61 | hp_som_som_object_present = 0; /* indicates HP-compiled code */ \ | |
62 | hp_cxx_exception_support_initialized = 0; /* must reinitialize exception stuff */ \ | |
63 | } while (0) | |
64 | #endif | |
65 | ||
917317f4 | 66 | int (*ui_load_progress_hook) (const char *section, unsigned long num); |
c906108c SS |
67 | void (*pre_add_symbol_hook) PARAMS ((char *)); |
68 | void (*post_add_symbol_hook) PARAMS ((void)); | |
69 | ||
70 | /* Global variables owned by this file */ | |
c5aa993b | 71 | int readnow_symbol_files; /* Read full symbols immediately */ |
c906108c | 72 | |
c5aa993b JM |
73 | struct complaint oldsyms_complaint = |
74 | { | |
c906108c SS |
75 | "Replacing old symbols for `%s'", 0, 0 |
76 | }; | |
77 | ||
c5aa993b JM |
78 | struct complaint empty_symtab_complaint = |
79 | { | |
c906108c SS |
80 | "Empty symbol table found for `%s'", 0, 0 |
81 | }; | |
82 | ||
2acceee2 JM |
83 | struct complaint unknown_option_complaint = |
84 | { | |
85 | "Unknown option `%s' ignored", 0, 0 | |
86 | }; | |
87 | ||
c906108c SS |
88 | /* External variables and functions referenced. */ |
89 | ||
90 | extern int info_verbose; | |
91 | ||
92 | extern void report_transfer_performance PARAMS ((unsigned long, | |
93 | time_t, time_t)); | |
94 | ||
95 | /* Functions this file defines */ | |
96 | ||
97 | #if 0 | |
98 | static int simple_read_overlay_region_table PARAMS ((void)); | |
99 | static void simple_free_overlay_region_table PARAMS ((void)); | |
100 | #endif | |
101 | ||
102 | static void set_initial_language PARAMS ((void)); | |
103 | ||
104 | static void load_command PARAMS ((char *, int)); | |
105 | ||
106 | static void add_symbol_file_command PARAMS ((char *, int)); | |
107 | ||
108 | static void add_shared_symbol_files_command PARAMS ((char *, int)); | |
109 | ||
110 | static void cashier_psymtab PARAMS ((struct partial_symtab *)); | |
111 | ||
112 | static int compare_psymbols PARAMS ((const void *, const void *)); | |
113 | ||
114 | static int compare_symbols PARAMS ((const void *, const void *)); | |
115 | ||
116 | bfd *symfile_bfd_open PARAMS ((char *)); | |
117 | ||
118 | static void find_sym_fns PARAMS ((struct objfile *)); | |
119 | ||
120 | static void decrement_reading_symtab PARAMS ((void *)); | |
121 | ||
122 | static void overlay_invalidate_all PARAMS ((void)); | |
123 | ||
124 | static int overlay_is_mapped PARAMS ((struct obj_section *)); | |
125 | ||
126 | void list_overlays_command PARAMS ((char *, int)); | |
127 | ||
128 | void map_overlay_command PARAMS ((char *, int)); | |
129 | ||
130 | void unmap_overlay_command PARAMS ((char *, int)); | |
131 | ||
132 | static void overlay_auto_command PARAMS ((char *, int)); | |
133 | ||
134 | static void overlay_manual_command PARAMS ((char *, int)); | |
135 | ||
136 | static void overlay_off_command PARAMS ((char *, int)); | |
137 | ||
138 | static void overlay_load_command PARAMS ((char *, int)); | |
139 | ||
140 | static void overlay_command PARAMS ((char *, int)); | |
141 | ||
142 | static void simple_free_overlay_table PARAMS ((void)); | |
143 | ||
144 | static void read_target_long_array PARAMS ((CORE_ADDR, unsigned int *, int)); | |
145 | ||
146 | static int simple_read_overlay_table PARAMS ((void)); | |
147 | ||
148 | static int simple_overlay_update_1 PARAMS ((struct obj_section *)); | |
149 | ||
392a587b JM |
150 | static void add_filename_language PARAMS ((char *ext, enum language lang)); |
151 | ||
152 | static void set_ext_lang_command PARAMS ((char *args, int from_tty)); | |
153 | ||
154 | static void info_ext_lang_command PARAMS ((char *args, int from_tty)); | |
155 | ||
156 | static void init_filename_language_table PARAMS ((void)); | |
157 | ||
c906108c SS |
158 | void _initialize_symfile PARAMS ((void)); |
159 | ||
160 | /* List of all available sym_fns. On gdb startup, each object file reader | |
161 | calls add_symtab_fns() to register information on each format it is | |
162 | prepared to read. */ | |
163 | ||
164 | static struct sym_fns *symtab_fns = NULL; | |
165 | ||
166 | /* Flag for whether user will be reloading symbols multiple times. | |
167 | Defaults to ON for VxWorks, otherwise OFF. */ | |
168 | ||
169 | #ifdef SYMBOL_RELOADING_DEFAULT | |
170 | int symbol_reloading = SYMBOL_RELOADING_DEFAULT; | |
171 | #else | |
172 | int symbol_reloading = 0; | |
173 | #endif | |
174 | ||
175 | /* If non-zero, then on HP-UX (i.e., platforms that use somsolib.c), | |
176 | this variable is interpreted as a threshhold. If adding a new | |
177 | library's symbol table to those already known to the debugger would | |
178 | exceed this threshhold, then the shlib's symbols are not added. | |
179 | ||
180 | If non-zero on other platforms, shared library symbols will be added | |
181 | automatically when the inferior is created, new libraries are loaded, | |
182 | or when attaching to the inferior. This is almost always what users | |
183 | will want to have happen; but for very large programs, the startup | |
184 | time will be excessive, and so if this is a problem, the user can | |
185 | clear this flag and then add the shared library symbols as needed. | |
186 | Note that there is a potential for confusion, since if the shared | |
187 | library symbols are not loaded, commands like "info fun" will *not* | |
188 | report all the functions that are actually present. | |
189 | ||
190 | Note that HP-UX interprets this variable to mean, "threshhold size | |
191 | in megabytes, where zero means never add". Other platforms interpret | |
192 | this variable to mean, "always add if non-zero, never add if zero." | |
c5aa993b | 193 | */ |
c906108c SS |
194 | |
195 | int auto_solib_add = 1; | |
c906108c | 196 | \f |
c5aa993b | 197 | |
c906108c SS |
198 | /* Since this function is called from within qsort, in an ANSI environment |
199 | it must conform to the prototype for qsort, which specifies that the | |
200 | comparison function takes two "void *" pointers. */ | |
201 | ||
202 | static int | |
203 | compare_symbols (s1p, s2p) | |
204 | const PTR s1p; | |
205 | const PTR s2p; | |
206 | { | |
207 | register struct symbol **s1, **s2; | |
208 | ||
209 | s1 = (struct symbol **) s1p; | |
210 | s2 = (struct symbol **) s2p; | |
211 | ||
212 | return (STRCMP (SYMBOL_NAME (*s1), SYMBOL_NAME (*s2))); | |
213 | } | |
214 | ||
215 | /* | |
216 | ||
c5aa993b | 217 | LOCAL FUNCTION |
c906108c | 218 | |
c5aa993b | 219 | compare_psymbols -- compare two partial symbols by name |
c906108c | 220 | |
c5aa993b | 221 | DESCRIPTION |
c906108c | 222 | |
c5aa993b JM |
223 | Given pointers to pointers to two partial symbol table entries, |
224 | compare them by name and return -N, 0, or +N (ala strcmp). | |
225 | Typically used by sorting routines like qsort(). | |
c906108c | 226 | |
c5aa993b | 227 | NOTES |
c906108c | 228 | |
c5aa993b JM |
229 | Does direct compare of first two characters before punting |
230 | and passing to strcmp for longer compares. Note that the | |
231 | original version had a bug whereby two null strings or two | |
232 | identically named one character strings would return the | |
233 | comparison of memory following the null byte. | |
c906108c SS |
234 | |
235 | */ | |
236 | ||
237 | static int | |
238 | compare_psymbols (s1p, s2p) | |
239 | const PTR s1p; | |
240 | const PTR s2p; | |
241 | { | |
242 | register char *st1 = SYMBOL_NAME (*(struct partial_symbol **) s1p); | |
243 | register char *st2 = SYMBOL_NAME (*(struct partial_symbol **) s2p); | |
244 | ||
245 | if ((st1[0] - st2[0]) || !st1[0]) | |
246 | { | |
247 | return (st1[0] - st2[0]); | |
248 | } | |
249 | else if ((st1[1] - st2[1]) || !st1[1]) | |
250 | { | |
251 | return (st1[1] - st2[1]); | |
252 | } | |
253 | else | |
254 | { | |
255 | /* Note: I replaced the STRCMP line (commented out below) | |
256 | * with a simpler "strcmp()" which compares the 2 strings | |
257 | * from the beginning. (STRCMP is a macro which first compares | |
258 | * the initial characters, then falls back on strcmp). | |
259 | * The reason is that the STRCMP line was tickling a C compiler | |
260 | * bug on HP-UX 10.30, which is avoided with the simpler | |
261 | * code. The performance gain from the more complicated code | |
262 | * is negligible, given that we have already checked the | |
263 | * initial 2 characters above. I reported the compiler bug, | |
264 | * and once it is fixed the original line can be put back. RT | |
265 | */ | |
266 | /* return ( STRCMP (st1 + 2, st2 + 2)); */ | |
c5aa993b | 267 | return (strcmp (st1, st2)); |
c906108c SS |
268 | } |
269 | } | |
270 | ||
271 | void | |
272 | sort_pst_symbols (pst) | |
273 | struct partial_symtab *pst; | |
274 | { | |
275 | /* Sort the global list; don't sort the static list */ | |
276 | ||
c5aa993b JM |
277 | qsort (pst->objfile->global_psymbols.list + pst->globals_offset, |
278 | pst->n_global_syms, sizeof (struct partial_symbol *), | |
c906108c SS |
279 | compare_psymbols); |
280 | } | |
281 | ||
282 | /* Call sort_block_syms to sort alphabetically the symbols of one block. */ | |
283 | ||
284 | void | |
285 | sort_block_syms (b) | |
286 | register struct block *b; | |
287 | { | |
288 | qsort (&BLOCK_SYM (b, 0), BLOCK_NSYMS (b), | |
289 | sizeof (struct symbol *), compare_symbols); | |
290 | } | |
291 | ||
292 | /* Call sort_symtab_syms to sort alphabetically | |
293 | the symbols of each block of one symtab. */ | |
294 | ||
295 | void | |
296 | sort_symtab_syms (s) | |
297 | register struct symtab *s; | |
298 | { | |
299 | register struct blockvector *bv; | |
300 | int nbl; | |
301 | int i; | |
302 | register struct block *b; | |
303 | ||
304 | if (s == 0) | |
305 | return; | |
306 | bv = BLOCKVECTOR (s); | |
307 | nbl = BLOCKVECTOR_NBLOCKS (bv); | |
308 | for (i = 0; i < nbl; i++) | |
309 | { | |
310 | b = BLOCKVECTOR_BLOCK (bv, i); | |
311 | if (BLOCK_SHOULD_SORT (b)) | |
312 | sort_block_syms (b); | |
313 | } | |
314 | } | |
315 | ||
316 | /* Make a null terminated copy of the string at PTR with SIZE characters in | |
317 | the obstack pointed to by OBSTACKP . Returns the address of the copy. | |
318 | Note that the string at PTR does not have to be null terminated, I.E. it | |
319 | may be part of a larger string and we are only saving a substring. */ | |
320 | ||
321 | char * | |
322 | obsavestring (ptr, size, obstackp) | |
323 | char *ptr; | |
324 | int size; | |
325 | struct obstack *obstackp; | |
326 | { | |
327 | register char *p = (char *) obstack_alloc (obstackp, size + 1); | |
328 | /* Open-coded memcpy--saves function call time. These strings are usually | |
329 | short. FIXME: Is this really still true with a compiler that can | |
330 | inline memcpy? */ | |
331 | { | |
332 | register char *p1 = ptr; | |
333 | register char *p2 = p; | |
334 | char *end = ptr + size; | |
335 | while (p1 != end) | |
336 | *p2++ = *p1++; | |
337 | } | |
338 | p[size] = 0; | |
339 | return p; | |
340 | } | |
341 | ||
342 | /* Concatenate strings S1, S2 and S3; return the new string. Space is found | |
343 | in the obstack pointed to by OBSTACKP. */ | |
344 | ||
345 | char * | |
346 | obconcat (obstackp, s1, s2, s3) | |
347 | struct obstack *obstackp; | |
348 | const char *s1, *s2, *s3; | |
349 | { | |
350 | register int len = strlen (s1) + strlen (s2) + strlen (s3) + 1; | |
351 | register char *val = (char *) obstack_alloc (obstackp, len); | |
352 | strcpy (val, s1); | |
353 | strcat (val, s2); | |
354 | strcat (val, s3); | |
355 | return val; | |
356 | } | |
357 | ||
358 | /* True if we are nested inside psymtab_to_symtab. */ | |
359 | ||
360 | int currently_reading_symtab = 0; | |
361 | ||
362 | static void | |
363 | decrement_reading_symtab (dummy) | |
364 | void *dummy; | |
365 | { | |
366 | currently_reading_symtab--; | |
367 | } | |
368 | ||
369 | /* Get the symbol table that corresponds to a partial_symtab. | |
370 | This is fast after the first time you do it. In fact, there | |
371 | is an even faster macro PSYMTAB_TO_SYMTAB that does the fast | |
372 | case inline. */ | |
373 | ||
374 | struct symtab * | |
375 | psymtab_to_symtab (pst) | |
376 | register struct partial_symtab *pst; | |
377 | { | |
378 | /* If it's been looked up before, return it. */ | |
379 | if (pst->symtab) | |
380 | return pst->symtab; | |
381 | ||
382 | /* If it has not yet been read in, read it. */ | |
383 | if (!pst->readin) | |
c5aa993b | 384 | { |
c906108c SS |
385 | struct cleanup *back_to = make_cleanup (decrement_reading_symtab, NULL); |
386 | currently_reading_symtab++; | |
387 | (*pst->read_symtab) (pst); | |
388 | do_cleanups (back_to); | |
389 | } | |
390 | ||
391 | return pst->symtab; | |
392 | } | |
393 | ||
394 | /* Initialize entry point information for this objfile. */ | |
395 | ||
396 | void | |
397 | init_entry_point_info (objfile) | |
398 | struct objfile *objfile; | |
399 | { | |
400 | /* Save startup file's range of PC addresses to help blockframe.c | |
401 | decide where the bottom of the stack is. */ | |
402 | ||
c5aa993b | 403 | if (bfd_get_file_flags (objfile->obfd) & EXEC_P) |
c906108c SS |
404 | { |
405 | /* Executable file -- record its entry point so we'll recognize | |
c5aa993b JM |
406 | the startup file because it contains the entry point. */ |
407 | objfile->ei.entry_point = bfd_get_start_address (objfile->obfd); | |
c906108c SS |
408 | } |
409 | else | |
410 | { | |
411 | /* Examination of non-executable.o files. Short-circuit this stuff. */ | |
c5aa993b | 412 | objfile->ei.entry_point = INVALID_ENTRY_POINT; |
c906108c | 413 | } |
c5aa993b JM |
414 | objfile->ei.entry_file_lowpc = INVALID_ENTRY_LOWPC; |
415 | objfile->ei.entry_file_highpc = INVALID_ENTRY_HIGHPC; | |
416 | objfile->ei.entry_func_lowpc = INVALID_ENTRY_LOWPC; | |
417 | objfile->ei.entry_func_highpc = INVALID_ENTRY_HIGHPC; | |
418 | objfile->ei.main_func_lowpc = INVALID_ENTRY_LOWPC; | |
419 | objfile->ei.main_func_highpc = INVALID_ENTRY_HIGHPC; | |
c906108c SS |
420 | } |
421 | ||
422 | /* Get current entry point address. */ | |
423 | ||
424 | CORE_ADDR | |
c5aa993b | 425 | entry_point_address () |
c906108c SS |
426 | { |
427 | return symfile_objfile ? symfile_objfile->ei.entry_point : 0; | |
428 | } | |
429 | ||
430 | /* Remember the lowest-addressed loadable section we've seen. | |
431 | This function is called via bfd_map_over_sections. | |
432 | ||
433 | In case of equal vmas, the section with the largest size becomes the | |
434 | lowest-addressed loadable section. | |
435 | ||
436 | If the vmas and sizes are equal, the last section is considered the | |
437 | lowest-addressed loadable section. */ | |
438 | ||
439 | void | |
440 | find_lowest_section (abfd, sect, obj) | |
441 | bfd *abfd; | |
442 | asection *sect; | |
443 | PTR obj; | |
444 | { | |
c5aa993b | 445 | asection **lowest = (asection **) obj; |
c906108c SS |
446 | |
447 | if (0 == (bfd_get_section_flags (abfd, sect) & SEC_LOAD)) | |
448 | return; | |
449 | if (!*lowest) | |
450 | *lowest = sect; /* First loadable section */ | |
451 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
452 | *lowest = sect; /* A lower loadable section */ | |
453 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
454 | && (bfd_section_size (abfd, (*lowest)) | |
455 | <= bfd_section_size (abfd, sect))) | |
456 | *lowest = sect; | |
457 | } | |
458 | ||
459 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
460 | of how to represent it for fast symbol reading. This is the default | |
461 | version of the sym_fns.sym_offsets function for symbol readers that | |
462 | don't need to do anything special. It allocates a section_offsets table | |
463 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
464 | ||
d4f3574e | 465 | void |
2acceee2 | 466 | default_symfile_offsets (objfile, addrs) |
c906108c | 467 | struct objfile *objfile; |
2acceee2 | 468 | struct section_addr_info *addrs; |
c906108c | 469 | { |
c906108c SS |
470 | int i; |
471 | ||
472 | objfile->num_sections = SECT_OFF_MAX; | |
d4f3574e | 473 | objfile->section_offsets = (struct section_offsets *) |
c5aa993b | 474 | obstack_alloc (&objfile->psymbol_obstack, SIZEOF_SECTION_OFFSETS); |
d4f3574e | 475 | memset (objfile->section_offsets, 0, SIZEOF_SECTION_OFFSETS); |
c906108c | 476 | |
2acceee2 JM |
477 | /* If user explicitly specified values for data and bss, set them here. */ |
478 | ||
479 | if (addrs->text_addr) | |
480 | ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT) = addrs->text_addr; | |
481 | if (addrs->data_addr) | |
482 | ANOFFSET (objfile->section_offsets, SECT_OFF_DATA) = addrs->data_addr; | |
483 | if (addrs->bss_addr) | |
484 | ANOFFSET (objfile->section_offsets, SECT_OFF_BSS) = addrs->bss_addr; | |
485 | ||
486 | /* Now calculate offsets for other sections. */ | |
487 | for (i = 0; i < MAX_SECTIONS && addrs->other[i].name; i++) | |
488 | { | |
489 | struct other_sections *osp ; | |
490 | ||
491 | osp = &addrs->other[i] ; | |
492 | if (addrs->other[i].addr == 0) | |
493 | continue; | |
494 | #if 0 | |
495 | if (strcmp (".text", osp->name) == 0) | |
496 | SECT_OFF_TEXT = osp->sectindex ; | |
497 | else if (strcmp (".data", osp->name) == 0) | |
498 | SECT_OFF_DATA = osp->sectindex ; | |
499 | else if (strcmp (".bss", osp->name) == 0) | |
500 | SECT_OFF_BSS = osp->sectindex ; | |
501 | #endif | |
502 | /* Record all sections in offsets */ | |
503 | ANOFFSET (objfile->section_offsets, osp->sectindex) = osp->addr; | |
504 | } | |
c906108c SS |
505 | } |
506 | ||
507 | ||
508 | /* Process a symbol file, as either the main file or as a dynamically | |
509 | loaded file. | |
510 | ||
96baa820 JM |
511 | OBJFILE is where the symbols are to be read from. |
512 | ||
513 | ADDR is the address where the text segment was loaded, unless the | |
514 | objfile is the main symbol file, in which case it is zero. | |
515 | ||
516 | MAINLINE is nonzero if this is the main symbol file, or zero if | |
517 | it's an extra symbol file such as dynamically loaded code. | |
518 | ||
519 | VERBO is nonzero if the caller has printed a verbose message about | |
520 | the symbol reading (and complaints can be more terse about it). */ | |
c906108c SS |
521 | |
522 | void | |
2acceee2 | 523 | syms_from_objfile (objfile, addrs, mainline, verbo) |
c906108c | 524 | struct objfile *objfile; |
2acceee2 | 525 | struct section_addr_info *addrs; |
c906108c SS |
526 | int mainline; |
527 | int verbo; | |
528 | { | |
529 | struct section_offsets *section_offsets; | |
2acceee2 JM |
530 | asection *lower_sect; |
531 | asection *sect; | |
532 | CORE_ADDR lower_offset; | |
533 | struct section_addr_info local_addr; | |
c906108c | 534 | struct cleanup *old_chain; |
2acceee2 JM |
535 | int i; |
536 | ||
537 | /* If ADDRS is NULL, initialize the local section_addr_info struct and | |
538 | point ADDRS to it. We now establish the convention that an addr of | |
539 | zero means no load address was specified. */ | |
540 | ||
541 | if (addrs == NULL) | |
542 | { | |
543 | memset (&local_addr, 0, sizeof (local_addr)); | |
544 | addrs = &local_addr; | |
545 | } | |
c906108c SS |
546 | |
547 | init_entry_point_info (objfile); | |
548 | find_sym_fns (objfile); | |
549 | ||
550 | /* Make sure that partially constructed symbol tables will be cleaned up | |
551 | if an error occurs during symbol reading. */ | |
552 | old_chain = make_cleanup ((make_cleanup_func) free_objfile, objfile); | |
553 | ||
c5aa993b | 554 | if (mainline) |
c906108c SS |
555 | { |
556 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 557 | will be cleaned up if an error occurs during symbol reading. */ |
c906108c SS |
558 | make_cleanup ((make_cleanup_func) clear_symtab_users, 0); |
559 | ||
560 | /* Since no error yet, throw away the old symbol table. */ | |
561 | ||
562 | if (symfile_objfile != NULL) | |
563 | { | |
564 | free_objfile (symfile_objfile); | |
565 | symfile_objfile = NULL; | |
566 | } | |
567 | ||
568 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
569 | If the user wants to get rid of them, they should do "symbol-file" |
570 | without arguments first. Not sure this is the best behavior | |
571 | (PR 2207). */ | |
c906108c | 572 | |
c5aa993b | 573 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
574 | } |
575 | ||
576 | /* Convert addr into an offset rather than an absolute address. | |
577 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 578 | and assume that <addr> is where that got loaded. |
c906108c | 579 | |
53a5351d JM |
580 | We no longer warn if the lowest section is not a text segment (as |
581 | happens for the PA64 port. */ | |
c906108c SS |
582 | if (mainline) |
583 | { | |
2acceee2 JM |
584 | /* No offset from objfile addresses. */ |
585 | addrs -> text_addr = 0; | |
586 | addrs -> data_addr = 0; | |
587 | addrs -> bss_addr = 0; | |
c906108c SS |
588 | } |
589 | else | |
590 | { | |
2acceee2 JM |
591 | /* Find lowest loadable section to be used as starting point for |
592 | continguous sections. FIXME!! won't work without call to find | |
593 | .text first, but this assumes text is lowest section. */ | |
594 | lower_sect = bfd_get_section_by_name (objfile->obfd, ".text"); | |
595 | if (lower_sect == NULL) | |
c906108c | 596 | bfd_map_over_sections (objfile->obfd, find_lowest_section, |
2acceee2 JM |
597 | (PTR) &lower_sect); |
598 | if (lower_sect == NULL) | |
c906108c SS |
599 | warning ("no loadable sections found in added symbol-file %s", |
600 | objfile->name); | |
2acceee2 JM |
601 | else if ((bfd_get_section_flags (objfile->obfd, lower_sect) & SEC_CODE) |
602 | == 0) | |
603 | warning ("Lowest section in %s is %s at %s", | |
604 | objfile->name, | |
605 | bfd_section_name (objfile->obfd, lower_sect), | |
606 | paddr (bfd_section_vma (objfile->obfd, lower_sect))); | |
607 | if (lower_sect != NULL) | |
608 | lower_offset = bfd_section_vma (objfile->obfd, lower_sect); | |
609 | else | |
610 | lower_offset = 0; | |
611 | ||
612 | /* Calculate offsets for the loadable sections. | |
613 | FIXME! Sections must be in order of increasing loadable section | |
614 | so that contiguous sections can use the lower-offset!!! | |
615 | ||
616 | Adjust offsets if the segments are not contiguous. | |
617 | If the section is contiguous, its offset should be set to | |
618 | the offset of the highest loadable section lower than it | |
619 | (the loadable section directly below it in memory). | |
620 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
621 | ||
622 | /* FIXME: These sections will not need special treatment because ALL | |
623 | sections are in the other sections table */ | |
624 | ||
625 | if (addrs->text_addr != 0) | |
626 | { | |
627 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); | |
628 | if (sect) | |
629 | { | |
630 | addrs->text_addr -= bfd_section_vma (objfile->obfd, sect); | |
631 | lower_offset = addrs->text_addr; | |
632 | } | |
633 | } | |
634 | else | |
635 | /* ??? who's below me? */ | |
636 | addrs->text_addr = lower_offset; | |
637 | ||
638 | if (addrs->data_addr != 0) | |
639 | { | |
640 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
641 | if (sect) | |
642 | { | |
643 | addrs->data_addr -= bfd_section_vma (objfile->obfd, sect); | |
644 | lower_offset = addrs->data_addr; | |
645 | } | |
646 | } | |
647 | else | |
648 | addrs->data_addr = lower_offset; | |
649 | ||
650 | if (addrs->bss_addr != 0) | |
651 | { | |
652 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
653 | if (sect) | |
654 | { | |
655 | addrs->bss_addr -= bfd_section_vma (objfile->obfd, sect); | |
656 | lower_offset = addrs->bss_addr; | |
657 | } | |
658 | } | |
659 | else | |
660 | addrs->bss_addr = lower_offset; | |
661 | ||
662 | /* Now calculate offsets for other sections. */ | |
663 | for (i=0 ; i < MAX_SECTIONS && addrs->other[i].name; i++) | |
664 | { | |
665 | ||
666 | if (addrs->other[i].addr != 0) | |
667 | { | |
668 | sect=bfd_get_section_by_name(objfile->obfd, addrs->other[i].name); | |
669 | if (sect) | |
670 | { | |
671 | addrs->other[i].addr -= bfd_section_vma (objfile->obfd, sect); | |
672 | lower_offset = addrs->other[i].addr; | |
673 | addrs->other[i].sectindex = sect->index ; | |
674 | } | |
675 | else | |
676 | { | |
677 | warning ("section %s not found in %s", addrs->other[i].name, | |
678 | objfile->name); | |
679 | addrs->other[i].addr = 0; | |
680 | } | |
681 | } | |
682 | else | |
683 | addrs->other[i].addr = lower_offset; | |
684 | } | |
c906108c SS |
685 | } |
686 | ||
687 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
688 | appear for this new file, and record how verbose to be, then do the | |
689 | initial symbol reading for this file. */ | |
690 | ||
c5aa993b | 691 | (*objfile->sf->sym_init) (objfile); |
c906108c SS |
692 | clear_complaints (1, verbo); |
693 | ||
2acceee2 | 694 | (*objfile->sf->sym_offsets) (objfile, addrs); |
c906108c SS |
695 | |
696 | #ifndef IBM6000_TARGET | |
697 | /* This is a SVR4/SunOS specific hack, I think. In any event, it | |
698 | screws RS/6000. sym_offsets should be doing this sort of thing, | |
699 | because it knows the mapping between bfd sections and | |
700 | section_offsets. */ | |
701 | /* This is a hack. As far as I can tell, section offsets are not | |
702 | target dependent. They are all set to addr with a couple of | |
703 | exceptions. The exceptions are sysvr4 shared libraries, whose | |
704 | offsets are kept in solib structures anyway and rs6000 xcoff | |
705 | which handles shared libraries in a completely unique way. | |
706 | ||
707 | Section offsets are built similarly, except that they are built | |
708 | by adding addr in all cases because there is no clear mapping | |
709 | from section_offsets into actual sections. Note that solib.c | |
96baa820 | 710 | has a different algorithm for finding section offsets. |
c906108c SS |
711 | |
712 | These should probably all be collapsed into some target | |
713 | independent form of shared library support. FIXME. */ | |
714 | ||
2acceee2 | 715 | if (addrs) |
c906108c SS |
716 | { |
717 | struct obj_section *s; | |
718 | ||
2acceee2 JM |
719 | /* Map section offsets in "addr" back to the object's |
720 | sections by comparing the section names with bfd's | |
721 | section names. Then adjust the section address by | |
722 | the offset. */ /* for gdb/13815 */ | |
723 | ||
96baa820 | 724 | ALL_OBJFILE_OSECTIONS (objfile, s) |
c906108c | 725 | { |
2acceee2 JM |
726 | CORE_ADDR s_addr = 0; |
727 | int i; | |
728 | ||
729 | if (strcmp (s->the_bfd_section->name, ".text") == 0) | |
730 | s_addr = addrs->text_addr; | |
731 | else if (strcmp (s->the_bfd_section->name, ".data") == 0) | |
732 | s_addr = addrs->data_addr; | |
733 | else if (strcmp (s->the_bfd_section->name, ".bss") == 0) | |
734 | s_addr = addrs->bss_addr; | |
735 | else | |
736 | for (i = 0; !s_addr && addrs->other[i].name; i++) | |
737 | if (strcmp (s->the_bfd_section->name, addrs->other[i].name) == 0) | |
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 JM |
775 | /* Call this after reading in a new symbol table to give target |
776 | dependant code a crack at the new symbols. For instance, this | |
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 SS |
787 | void |
788 | new_symfile_objfile (objfile, mainline, verbo) | |
789 | struct objfile *objfile; | |
790 | int mainline; | |
791 | int verbo; | |
792 | { | |
793 | ||
794 | /* If this is the main symbol file we have to clean up all users of the | |
795 | old main symbol file. Otherwise it is sufficient to fixup all the | |
796 | breakpoints that may have been redefined by this symbol file. */ | |
797 | if (mainline) | |
798 | { | |
799 | /* OK, make it the "real" symbol file. */ | |
800 | symfile_objfile = objfile; | |
801 | ||
802 | clear_symtab_users (); | |
803 | } | |
804 | else | |
805 | { | |
806 | breakpoint_re_set (); | |
807 | } | |
808 | ||
809 | /* We're done reading the symbol file; finish off complaints. */ | |
810 | clear_complaints (0, verbo); | |
811 | } | |
812 | ||
813 | /* Process a symbol file, as either the main file or as a dynamically | |
814 | loaded file. | |
815 | ||
816 | NAME is the file name (which will be tilde-expanded and made | |
817 | absolute herein) (but we don't free or modify NAME itself). | |
818 | FROM_TTY says how verbose to be. MAINLINE specifies whether this | |
819 | is the main symbol file, or whether it's an extra symbol file such | |
820 | as dynamically loaded code. If !mainline, ADDR is the address | |
821 | where the text segment was loaded. | |
822 | ||
c906108c SS |
823 | Upon success, returns a pointer to the objfile that was added. |
824 | Upon failure, jumps back to command level (never returns). */ | |
825 | ||
826 | struct objfile * | |
2df3850c | 827 | symbol_file_add (name, from_tty, addrs, mainline, flags) |
c906108c SS |
828 | char *name; |
829 | int from_tty; | |
2acceee2 | 830 | struct section_addr_info *addrs; |
c906108c | 831 | int mainline; |
2acceee2 | 832 | int flags; |
c906108c SS |
833 | { |
834 | struct objfile *objfile; | |
835 | struct partial_symtab *psymtab; | |
836 | bfd *abfd; | |
837 | ||
838 | /* Open a bfd for the file, and give user a chance to burp if we'd be | |
839 | interactively wiping out any existing symbols. */ | |
840 | ||
841 | abfd = symfile_bfd_open (name); | |
842 | ||
843 | if ((have_full_symbols () || have_partial_symbols ()) | |
844 | && mainline | |
845 | && from_tty | |
846 | && !query ("Load new symbol table from \"%s\"? ", name)) | |
c5aa993b | 847 | error ("Not confirmed."); |
c906108c | 848 | |
2df3850c | 849 | objfile = allocate_objfile (abfd, flags); |
c906108c SS |
850 | |
851 | /* If the objfile uses a mapped symbol file, and we have a psymtab for | |
852 | it, then skip reading any symbols at this time. */ | |
853 | ||
c5aa993b | 854 | if ((objfile->flags & OBJF_MAPPED) && (objfile->flags & OBJF_SYMS)) |
c906108c SS |
855 | { |
856 | /* We mapped in an existing symbol table file that already has had | |
c5aa993b JM |
857 | initial symbol reading performed, so we can skip that part. Notify |
858 | the user that instead of reading the symbols, they have been mapped. | |
859 | */ | |
c906108c SS |
860 | if (from_tty || info_verbose) |
861 | { | |
862 | printf_filtered ("Mapped symbols for %s...", name); | |
863 | wrap_here (""); | |
864 | gdb_flush (gdb_stdout); | |
865 | } | |
866 | init_entry_point_info (objfile); | |
867 | find_sym_fns (objfile); | |
868 | } | |
869 | else | |
870 | { | |
871 | /* We either created a new mapped symbol table, mapped an existing | |
c5aa993b JM |
872 | symbol table file which has not had initial symbol reading |
873 | performed, or need to read an unmapped symbol table. */ | |
c906108c SS |
874 | if (from_tty || info_verbose) |
875 | { | |
876 | if (pre_add_symbol_hook) | |
877 | pre_add_symbol_hook (name); | |
878 | else | |
879 | { | |
880 | printf_filtered ("Reading symbols from %s...", name); | |
881 | wrap_here (""); | |
882 | gdb_flush (gdb_stdout); | |
883 | } | |
884 | } | |
2acceee2 | 885 | syms_from_objfile (objfile, addrs, mainline, from_tty); |
c906108c SS |
886 | } |
887 | ||
888 | /* We now have at least a partial symbol table. Check to see if the | |
889 | user requested that all symbols be read on initial access via either | |
890 | the gdb startup command line or on a per symbol file basis. Expand | |
891 | all partial symbol tables for this objfile if so. */ | |
892 | ||
2acceee2 | 893 | if ((flags & OBJF_READNOW) || readnow_symbol_files) |
c906108c SS |
894 | { |
895 | if (from_tty || info_verbose) | |
896 | { | |
897 | printf_filtered ("expanding to full symbols..."); | |
898 | wrap_here (""); | |
899 | gdb_flush (gdb_stdout); | |
900 | } | |
901 | ||
c5aa993b | 902 | for (psymtab = objfile->psymtabs; |
c906108c | 903 | psymtab != NULL; |
c5aa993b | 904 | psymtab = psymtab->next) |
c906108c SS |
905 | { |
906 | psymtab_to_symtab (psymtab); | |
907 | } | |
908 | } | |
909 | ||
910 | if (from_tty || info_verbose) | |
911 | { | |
912 | if (post_add_symbol_hook) | |
c5aa993b | 913 | post_add_symbol_hook (); |
c906108c | 914 | else |
c5aa993b JM |
915 | { |
916 | printf_filtered ("done.\n"); | |
917 | gdb_flush (gdb_stdout); | |
918 | } | |
c906108c SS |
919 | } |
920 | ||
921 | new_symfile_objfile (objfile, mainline, from_tty); | |
922 | ||
923 | target_new_objfile (objfile); | |
924 | ||
925 | return (objfile); | |
926 | } | |
927 | ||
928 | /* This is the symbol-file command. Read the file, analyze its | |
929 | symbols, and add a struct symtab to a symtab list. The syntax of | |
930 | the command is rather bizarre--(1) buildargv implements various | |
931 | quoting conventions which are undocumented and have little or | |
932 | nothing in common with the way things are quoted (or not quoted) | |
933 | elsewhere in GDB, (2) options are used, which are not generally | |
934 | used in GDB (perhaps "set mapped on", "set readnow on" would be | |
935 | better), (3) the order of options matters, which is contrary to GNU | |
936 | conventions (because it is confusing and inconvenient). */ | |
937 | ||
938 | void | |
939 | symbol_file_command (args, from_tty) | |
940 | char *args; | |
941 | int from_tty; | |
942 | { | |
943 | char **argv; | |
944 | char *name = NULL; | |
c5aa993b | 945 | CORE_ADDR text_relocation = 0; /* text_relocation */ |
c906108c | 946 | struct cleanup *cleanups; |
2df3850c | 947 | int flags = OBJF_USERLOADED; |
c906108c SS |
948 | |
949 | dont_repeat (); | |
950 | ||
951 | if (args == NULL) | |
952 | { | |
953 | if ((have_full_symbols () || have_partial_symbols ()) | |
954 | && from_tty | |
955 | && !query ("Discard symbol table from `%s'? ", | |
c5aa993b | 956 | symfile_objfile->name)) |
c906108c SS |
957 | error ("Not confirmed."); |
958 | free_all_objfiles (); | |
959 | ||
960 | /* solib descriptors may have handles to objfiles. Since their | |
961 | storage has just been released, we'd better wipe the solib | |
962 | descriptors as well. | |
c5aa993b | 963 | */ |
c906108c SS |
964 | #if defined(SOLIB_RESTART) |
965 | SOLIB_RESTART (); | |
966 | #endif | |
967 | ||
968 | symfile_objfile = NULL; | |
969 | if (from_tty) | |
970 | { | |
971 | printf_unfiltered ("No symbol file now.\n"); | |
972 | } | |
973 | #ifdef HPUXHPPA | |
974 | RESET_HP_UX_GLOBALS (); | |
975 | #endif | |
976 | } | |
977 | else | |
978 | { | |
979 | if ((argv = buildargv (args)) == NULL) | |
980 | { | |
981 | nomem (0); | |
982 | } | |
7a292a7a | 983 | cleanups = make_cleanup_freeargv (argv); |
c906108c SS |
984 | while (*argv != NULL) |
985 | { | |
986 | if (STREQ (*argv, "-mapped")) | |
987 | { | |
2acceee2 | 988 | flags |= OBJF_MAPPED; |
c906108c SS |
989 | } |
990 | else if (STREQ (*argv, "-readnow")) | |
991 | { | |
2acceee2 | 992 | flags |= OBJF_READNOW; |
c906108c SS |
993 | } |
994 | else if (**argv == '-') | |
995 | { | |
996 | error ("unknown option `%s'", *argv); | |
997 | } | |
998 | else | |
999 | { | |
c5aa993b | 1000 | char *p; |
c906108c | 1001 | |
c5aa993b | 1002 | name = *argv; |
c906108c | 1003 | |
c5aa993b JM |
1004 | /* this is for rombug remote only, to get the text relocation by |
1005 | using link command */ | |
1006 | p = strrchr (name, '/'); | |
1007 | if (p != NULL) | |
1008 | p++; | |
1009 | else | |
1010 | p = name; | |
c906108c | 1011 | |
c5aa993b | 1012 | target_link (p, &text_relocation); |
c906108c | 1013 | |
c5aa993b JM |
1014 | if (text_relocation == (CORE_ADDR) 0) |
1015 | return; | |
a0b3c4fd | 1016 | else if (text_relocation == (CORE_ADDR) -1) |
c5aa993b | 1017 | { |
2df3850c | 1018 | symbol_file_add (name, from_tty, NULL, 1, flags); |
c906108c | 1019 | #ifdef HPUXHPPA |
c5aa993b | 1020 | RESET_HP_UX_GLOBALS (); |
c906108c | 1021 | #endif |
c5aa993b JM |
1022 | } |
1023 | else | |
2acceee2 JM |
1024 | { |
1025 | struct section_addr_info section_addrs; | |
1026 | memset (§ion_addrs, 0, sizeof (section_addrs)); | |
1027 | section_addrs.text_addr = (CORE_ADDR) text_relocation; | |
2df3850c | 1028 | symbol_file_add (name, from_tty, §ion_addrs, 0, flags); |
2acceee2 | 1029 | } |
c906108c SS |
1030 | |
1031 | /* Getting new symbols may change our opinion about what is | |
c5aa993b | 1032 | frameless. */ |
c906108c SS |
1033 | reinit_frame_cache (); |
1034 | ||
c5aa993b | 1035 | set_initial_language (); |
c906108c SS |
1036 | } |
1037 | argv++; | |
1038 | } | |
1039 | ||
1040 | if (name == NULL) | |
1041 | { | |
1042 | error ("no symbol file name was specified"); | |
1043 | } | |
c5aa993b | 1044 | TUIDO (((TuiOpaqueFuncPtr) tuiDisplayMainFunction)); |
c906108c SS |
1045 | do_cleanups (cleanups); |
1046 | } | |
1047 | } | |
1048 | ||
1049 | /* Set the initial language. | |
1050 | ||
1051 | A better solution would be to record the language in the psymtab when reading | |
1052 | partial symbols, and then use it (if known) to set the language. This would | |
1053 | be a win for formats that encode the language in an easily discoverable place, | |
1054 | such as DWARF. For stabs, we can jump through hoops looking for specially | |
1055 | named symbols or try to intuit the language from the specific type of stabs | |
1056 | we find, but we can't do that until later when we read in full symbols. | |
1057 | FIXME. */ | |
1058 | ||
1059 | static void | |
1060 | set_initial_language () | |
1061 | { | |
1062 | struct partial_symtab *pst; | |
c5aa993b | 1063 | enum language lang = language_unknown; |
c906108c SS |
1064 | |
1065 | pst = find_main_psymtab (); | |
1066 | if (pst != NULL) | |
1067 | { | |
c5aa993b | 1068 | if (pst->filename != NULL) |
c906108c | 1069 | { |
c5aa993b JM |
1070 | lang = deduce_language_from_filename (pst->filename); |
1071 | } | |
c906108c SS |
1072 | if (lang == language_unknown) |
1073 | { | |
c5aa993b JM |
1074 | /* Make C the default language */ |
1075 | lang = language_c; | |
c906108c SS |
1076 | } |
1077 | set_language (lang); | |
1078 | expected_language = current_language; /* Don't warn the user */ | |
1079 | } | |
1080 | } | |
1081 | ||
1082 | /* Open file specified by NAME and hand it off to BFD for preliminary | |
1083 | analysis. Result is a newly initialized bfd *, which includes a newly | |
1084 | malloc'd` copy of NAME (tilde-expanded and made absolute). | |
1085 | In case of trouble, error() is called. */ | |
1086 | ||
1087 | bfd * | |
1088 | symfile_bfd_open (name) | |
1089 | char *name; | |
1090 | { | |
1091 | bfd *sym_bfd; | |
1092 | int desc; | |
1093 | char *absolute_name; | |
1094 | ||
1095 | ||
1096 | ||
1097 | name = tilde_expand (name); /* Returns 1st new malloc'd copy */ | |
1098 | ||
1099 | /* Look down path for it, allocate 2nd new malloc'd copy. */ | |
1100 | desc = openp (getenv ("PATH"), 1, name, O_RDONLY | O_BINARY, 0, &absolute_name); | |
1101 | #if defined(__GO32__) || defined(_WIN32) | |
1102 | if (desc < 0) | |
1103 | { | |
1104 | char *exename = alloca (strlen (name) + 5); | |
1105 | strcat (strcpy (exename, name), ".exe"); | |
1106 | desc = openp (getenv ("PATH"), 1, exename, O_RDONLY | O_BINARY, | |
c5aa993b | 1107 | 0, &absolute_name); |
c906108c SS |
1108 | } |
1109 | #endif | |
1110 | if (desc < 0) | |
1111 | { | |
1112 | make_cleanup (free, name); | |
1113 | perror_with_name (name); | |
1114 | } | |
1115 | free (name); /* Free 1st new malloc'd copy */ | |
1116 | name = absolute_name; /* Keep 2nd malloc'd copy in bfd */ | |
c5aa993b | 1117 | /* It'll be freed in free_objfile(). */ |
c906108c SS |
1118 | |
1119 | sym_bfd = bfd_fdopenr (name, gnutarget, desc); | |
1120 | if (!sym_bfd) | |
1121 | { | |
1122 | close (desc); | |
1123 | make_cleanup (free, name); | |
1124 | error ("\"%s\": can't open to read symbols: %s.", name, | |
1125 | bfd_errmsg (bfd_get_error ())); | |
1126 | } | |
1127 | sym_bfd->cacheable = true; | |
1128 | ||
1129 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1130 | { | |
1131 | /* FIXME: should be checking for errors from bfd_close (for one thing, | |
c5aa993b JM |
1132 | on error it does not free all the storage associated with the |
1133 | bfd). */ | |
c906108c SS |
1134 | bfd_close (sym_bfd); /* This also closes desc */ |
1135 | make_cleanup (free, name); | |
1136 | error ("\"%s\": can't read symbols: %s.", name, | |
1137 | bfd_errmsg (bfd_get_error ())); | |
1138 | } | |
1139 | return (sym_bfd); | |
1140 | } | |
1141 | ||
1142 | /* Link a new symtab_fns into the global symtab_fns list. Called on gdb | |
1143 | startup by the _initialize routine in each object file format reader, | |
1144 | to register information about each format the the reader is prepared | |
1145 | to handle. */ | |
1146 | ||
1147 | void | |
1148 | add_symtab_fns (sf) | |
1149 | struct sym_fns *sf; | |
1150 | { | |
1151 | sf->next = symtab_fns; | |
1152 | symtab_fns = sf; | |
1153 | } | |
1154 | ||
1155 | ||
1156 | /* Initialize to read symbols from the symbol file sym_bfd. It either | |
1157 | returns or calls error(). The result is an initialized struct sym_fns | |
1158 | in the objfile structure, that contains cached information about the | |
1159 | symbol file. */ | |
1160 | ||
1161 | static void | |
1162 | find_sym_fns (objfile) | |
1163 | struct objfile *objfile; | |
1164 | { | |
1165 | struct sym_fns *sf; | |
c5aa993b JM |
1166 | enum bfd_flavour our_flavour = bfd_get_flavour (objfile->obfd); |
1167 | char *our_target = bfd_get_target (objfile->obfd); | |
c906108c SS |
1168 | |
1169 | /* Special kludge for RS/6000 and PowerMac. See xcoffread.c. */ | |
1170 | if (STREQ (our_target, "aixcoff-rs6000") || | |
1171 | STREQ (our_target, "xcoff-powermac")) | |
c5aa993b | 1172 | our_flavour = (enum bfd_flavour) -1; |
c906108c SS |
1173 | |
1174 | /* Special kludge for apollo. See dstread.c. */ | |
1175 | if (STREQN (our_target, "apollo", 6)) | |
c5aa993b | 1176 | our_flavour = (enum bfd_flavour) -2; |
c906108c | 1177 | |
c5aa993b | 1178 | for (sf = symtab_fns; sf != NULL; sf = sf->next) |
c906108c | 1179 | { |
c5aa993b | 1180 | if (our_flavour == sf->sym_flavour) |
c906108c | 1181 | { |
c5aa993b | 1182 | objfile->sf = sf; |
c906108c SS |
1183 | return; |
1184 | } | |
1185 | } | |
1186 | error ("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown.", | |
c5aa993b | 1187 | bfd_get_target (objfile->obfd)); |
c906108c SS |
1188 | } |
1189 | \f | |
1190 | /* This function runs the load command of our current target. */ | |
1191 | ||
1192 | static void | |
1193 | load_command (arg, from_tty) | |
1194 | char *arg; | |
1195 | int from_tty; | |
1196 | { | |
1197 | if (arg == NULL) | |
1198 | arg = get_exec_file (1); | |
1199 | target_load (arg, from_tty); | |
1200 | } | |
1201 | ||
1202 | /* This version of "load" should be usable for any target. Currently | |
1203 | it is just used for remote targets, not inftarg.c or core files, | |
1204 | on the theory that only in that case is it useful. | |
1205 | ||
1206 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1207 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1208 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1209 | performance compares. */ | |
917317f4 JM |
1210 | |
1211 | static int download_write_size = 512; | |
1212 | static int validate_download = 0; | |
1213 | ||
c906108c | 1214 | void |
917317f4 | 1215 | generic_load (char *args, int from_tty) |
c906108c | 1216 | { |
c906108c SS |
1217 | asection *s; |
1218 | bfd *loadfile_bfd; | |
1219 | time_t start_time, end_time; /* Start and end times of download */ | |
1220 | unsigned long data_count = 0; /* Number of bytes transferred to memory */ | |
917317f4 JM |
1221 | unsigned long write_count = 0; /* Number of writes needed. */ |
1222 | unsigned long load_offset; /* offset to add to vma for each section */ | |
1223 | char *filename; | |
1224 | struct cleanup *old_cleanups; | |
1225 | char *offptr; | |
1226 | ||
1227 | /* Parse the input argument - the user can specify a load offset as | |
1228 | a second argument. */ | |
1229 | filename = xmalloc (strlen (args) + 1); | |
1230 | old_cleanups = make_cleanup (free, filename); | |
1231 | strcpy (filename, args); | |
1232 | offptr = strchr (filename, ' '); | |
1233 | if (offptr != NULL) | |
1234 | { | |
1235 | char *endptr; | |
1236 | load_offset = strtoul (offptr, &endptr, 0); | |
1237 | if (offptr == endptr) | |
1238 | error ("Invalid download offset:%s\n", offptr); | |
1239 | *offptr = '\0'; | |
1240 | } | |
c906108c SS |
1241 | else |
1242 | load_offset = 0; | |
1243 | ||
917317f4 | 1244 | /* Open the file for loading. */ |
c906108c SS |
1245 | loadfile_bfd = bfd_openr (filename, gnutarget); |
1246 | if (loadfile_bfd == NULL) | |
1247 | { | |
1248 | perror_with_name (filename); | |
1249 | return; | |
1250 | } | |
917317f4 | 1251 | |
c906108c SS |
1252 | /* FIXME: should be checking for errors from bfd_close (for one thing, |
1253 | on error it does not free all the storage associated with the | |
1254 | bfd). */ | |
917317f4 | 1255 | make_cleanup ((make_cleanup_func) bfd_close, loadfile_bfd); |
c906108c | 1256 | |
c5aa993b | 1257 | if (!bfd_check_format (loadfile_bfd, bfd_object)) |
c906108c SS |
1258 | { |
1259 | error ("\"%s\" is not an object file: %s", filename, | |
1260 | bfd_errmsg (bfd_get_error ())); | |
1261 | } | |
c5aa993b | 1262 | |
c906108c SS |
1263 | start_time = time (NULL); |
1264 | ||
c5aa993b JM |
1265 | for (s = loadfile_bfd->sections; s; s = s->next) |
1266 | { | |
1267 | if (s->flags & SEC_LOAD) | |
1268 | { | |
917317f4 | 1269 | CORE_ADDR size = bfd_get_section_size_before_reloc (s); |
c5aa993b JM |
1270 | if (size > 0) |
1271 | { | |
1272 | char *buffer; | |
1273 | struct cleanup *old_chain; | |
917317f4 JM |
1274 | CORE_ADDR lma = s->lma + load_offset; |
1275 | CORE_ADDR block_size; | |
c5aa993b | 1276 | int err; |
917317f4 JM |
1277 | const char *sect_name = bfd_get_section_name (loadfile_bfd, s); |
1278 | CORE_ADDR sent; | |
c5aa993b | 1279 | |
917317f4 JM |
1280 | if (download_write_size > 0 && size > download_write_size) |
1281 | block_size = download_write_size; | |
1282 | else | |
1283 | block_size = size; | |
c5aa993b JM |
1284 | |
1285 | buffer = xmalloc (size); | |
1286 | old_chain = make_cleanup (free, buffer); | |
1287 | ||
c5aa993b JM |
1288 | /* Is this really necessary? I guess it gives the user something |
1289 | to look at during a long download. */ | |
917317f4 JM |
1290 | fprintf_unfiltered (gdb_stdout, |
1291 | "Loading section %s, size 0x%s lma 0x%s\n", | |
1292 | sect_name, paddr_nz (size), paddr_nz (lma)); | |
c5aa993b JM |
1293 | |
1294 | bfd_get_section_contents (loadfile_bfd, s, buffer, 0, size); | |
1295 | ||
c5aa993b JM |
1296 | sent = 0; |
1297 | do | |
1298 | { | |
917317f4 JM |
1299 | CORE_ADDR len; |
1300 | CORE_ADDR this_transfer = size - sent; | |
1301 | if (this_transfer >= block_size) | |
1302 | this_transfer = block_size; | |
1303 | len = target_write_memory_partial (lma, buffer, | |
1304 | this_transfer, &err); | |
c5aa993b JM |
1305 | if (err) |
1306 | break; | |
917317f4 JM |
1307 | if (validate_download) |
1308 | { | |
1309 | /* Broken memories and broken monitors manifest | |
1310 | themselves here when bring new computers to | |
1311 | life. This doubles already slow downloads. */ | |
1312 | /* NOTE: cagney/1999-10-18: A more efficient | |
1313 | implementation might add a verify_memory() | |
1314 | method to the target vector and then use | |
1315 | that. remote.c could implement that method | |
1316 | using the ``qCRC'' packet. */ | |
1317 | char *check = xmalloc (len); | |
1318 | struct cleanup *verify_cleanups = make_cleanup (free, check); | |
1319 | if (target_read_memory (lma, check, len) != 0) | |
1320 | error ("Download verify read failed at 0x%s", | |
1321 | paddr (lma)); | |
1322 | if (memcmp (buffer, check, len) != 0) | |
1323 | error ("Download verify compare failed at 0x%s", | |
1324 | paddr (lma)); | |
1325 | do_cleanups (verify_cleanups); | |
1326 | } | |
c5aa993b JM |
1327 | data_count += len; |
1328 | lma += len; | |
1329 | buffer += len; | |
917317f4 JM |
1330 | write_count += 1; |
1331 | sent += len; | |
1332 | if (quit_flag | |
1333 | || (ui_load_progress_hook != NULL | |
1334 | && ui_load_progress_hook (sect_name, sent))) | |
1335 | error ("Canceled the download"); | |
1336 | } | |
1337 | while (sent < size); | |
c5aa993b JM |
1338 | |
1339 | if (err != 0) | |
917317f4 | 1340 | error ("Memory access error while loading section %s.", sect_name); |
c906108c | 1341 | |
c5aa993b JM |
1342 | do_cleanups (old_chain); |
1343 | } | |
1344 | } | |
c906108c SS |
1345 | } |
1346 | ||
1347 | end_time = time (NULL); | |
1348 | { | |
917317f4 | 1349 | CORE_ADDR entry; |
c5aa993b | 1350 | entry = bfd_get_start_address (loadfile_bfd); |
917317f4 JM |
1351 | fprintf_unfiltered (gdb_stdout, |
1352 | "Start address 0x%s , load size %ld\n", | |
1353 | paddr_nz (entry), data_count); | |
c906108c SS |
1354 | /* We were doing this in remote-mips.c, I suspect it is right |
1355 | for other targets too. */ | |
1356 | write_pc (entry); | |
1357 | } | |
1358 | ||
1359 | /* FIXME: are we supposed to call symbol_file_add or not? According to | |
1360 | a comment from remote-mips.c (where a call to symbol_file_add was | |
1361 | commented out), making the call confuses GDB if more than one file is | |
1362 | loaded in. remote-nindy.c had no call to symbol_file_add, but remote-vx.c | |
1363 | does. */ | |
1364 | ||
917317f4 JM |
1365 | print_transfer_performance (gdb_stdout, data_count, write_count, |
1366 | end_time - start_time); | |
c906108c SS |
1367 | |
1368 | do_cleanups (old_cleanups); | |
1369 | } | |
1370 | ||
1371 | /* Report how fast the transfer went. */ | |
1372 | ||
917317f4 JM |
1373 | /* DEPRECATED: cagney/1999-10-18: report_transfer_performance is being |
1374 | replaced by print_transfer_performance (with a very different | |
1375 | function signature). */ | |
1376 | ||
c906108c SS |
1377 | void |
1378 | report_transfer_performance (data_count, start_time, end_time) | |
c5aa993b JM |
1379 | unsigned long data_count; |
1380 | time_t start_time, end_time; | |
c906108c | 1381 | { |
917317f4 JM |
1382 | print_transfer_performance (gdb_stdout, data_count, end_time - start_time, 0); |
1383 | } | |
1384 | ||
1385 | void | |
1386 | print_transfer_performance (struct gdb_file *stream, | |
1387 | unsigned long data_count, | |
1388 | unsigned long write_count, | |
1389 | unsigned long time_count) | |
1390 | { | |
1391 | fprintf_unfiltered (stream, "Transfer rate: "); | |
1392 | if (time_count > 0) | |
1393 | fprintf_unfiltered (stream, "%ld bits/sec", (data_count * 8) / time_count); | |
c906108c | 1394 | else |
917317f4 JM |
1395 | fprintf_unfiltered (stream, "%ld bits in <1 sec", (data_count * 8)); |
1396 | if (write_count > 0) | |
1397 | fprintf_unfiltered (stream, ", %ld bytes/write", data_count / write_count); | |
1398 | fprintf_unfiltered (stream, ".\n"); | |
c906108c SS |
1399 | } |
1400 | ||
1401 | /* This function allows the addition of incrementally linked object files. | |
1402 | It does not modify any state in the target, only in the debugger. */ | |
1403 | ||
1404 | /* ARGSUSED */ | |
1405 | static void | |
1406 | add_symbol_file_command (args, from_tty) | |
1407 | char *args; | |
1408 | int from_tty; | |
1409 | { | |
1410 | char *name = NULL; | |
1411 | CORE_ADDR text_addr; | |
2df3850c | 1412 | int flags = OBJF_USERLOADED; |
c906108c | 1413 | char *arg; |
2acceee2 JM |
1414 | int expecting_option = 0; |
1415 | int option_index = 0; | |
1416 | int argcnt = 0; | |
1417 | int sec_num = 0; | |
1418 | int i; | |
1419 | struct | |
1420 | { | |
1421 | enum { OPT_SECTION } type; | |
1422 | char *name; | |
1423 | char *value; | |
1424 | } opt[SECT_OFF_MAX]; | |
1425 | struct section_addr_info section_addrs; | |
c5aa993b | 1426 | |
c906108c SS |
1427 | dont_repeat (); |
1428 | ||
1429 | if (args == NULL) | |
1430 | { | |
1431 | error ("add-symbol-file takes a file name and an address"); | |
1432 | } | |
1433 | ||
1434 | /* Make a copy of the string that we can safely write into. */ | |
1435 | ||
1436 | args = strdup (args); | |
1437 | make_cleanup (free, args); | |
1438 | ||
2acceee2 JM |
1439 | /* Ensure section_addrs is initialized */ |
1440 | memset (§ion_addrs, 0, sizeof (section_addrs)); | |
1441 | ||
c906108c SS |
1442 | /* Pick off any -option args and the file name. */ |
1443 | ||
2acceee2 | 1444 | while (*args != '\000') |
c906108c | 1445 | { |
c5aa993b JM |
1446 | while (isspace (*args)) |
1447 | { | |
1448 | args++; | |
1449 | } | |
c906108c | 1450 | arg = args; |
c5aa993b JM |
1451 | while ((*args != '\000') && !isspace (*args)) |
1452 | { | |
1453 | args++; | |
1454 | } | |
c906108c SS |
1455 | if (*args != '\000') |
1456 | { | |
1457 | *args++ = '\000'; | |
1458 | } | |
1459 | if (*arg != '-') | |
1460 | { | |
2acceee2 JM |
1461 | if (expecting_option) |
1462 | { | |
1463 | opt[option_index++].value = arg; | |
1464 | expecting_option = 0; | |
1465 | } | |
1466 | else | |
1467 | { | |
1468 | switch (argcnt) | |
1469 | { | |
1470 | case 0: | |
1471 | name = arg; | |
1472 | break; | |
1473 | case 1: | |
1474 | opt[option_index].type = OPT_SECTION; | |
1475 | opt[option_index].name = ".text"; | |
1476 | opt[option_index++].value = arg; | |
1477 | break; | |
1478 | case 2: | |
1479 | opt[option_index].type = OPT_SECTION; | |
1480 | opt[option_index].name = ".data"; | |
1481 | opt[option_index++].value = arg; | |
1482 | break; | |
1483 | case 3: | |
1484 | opt[option_index].type = OPT_SECTION; | |
1485 | opt[option_index].name = ".bss"; | |
1486 | opt[option_index++].value = arg; | |
1487 | break; | |
1488 | default: | |
1489 | warning ("Too many arguments entered; see \"help add-symbol-file\" for command syntax."); | |
1490 | } | |
1491 | argcnt++; | |
1492 | } | |
c906108c SS |
1493 | } |
1494 | else if (STREQ (arg, "-mapped")) | |
1495 | { | |
2acceee2 | 1496 | flags |= OBJF_MAPPED; |
c906108c SS |
1497 | } |
1498 | else if (STREQ (arg, "-readnow")) | |
1499 | { | |
2acceee2 | 1500 | flags |= OBJF_READNOW; |
c906108c | 1501 | } |
2acceee2 JM |
1502 | else if (STREQN (arg, "-T", 2)) |
1503 | { | |
1504 | if (option_index >= SECT_OFF_MAX) | |
1505 | { | |
1506 | warning ("Number of options exceeds maximum allowed."); | |
1507 | } | |
1508 | else | |
1509 | { | |
1510 | expecting_option = 1; | |
1511 | opt[option_index].type = OPT_SECTION; | |
1512 | opt[option_index].name = arg + 2; | |
1513 | } | |
1514 | } | |
1515 | else | |
1516 | { | |
1517 | error ("Unknown option `%s'", arg); | |
1518 | } | |
c906108c SS |
1519 | } |
1520 | ||
c906108c SS |
1521 | if (name == NULL) |
1522 | { | |
1523 | error ("add-symbol-file takes a file name"); | |
1524 | } | |
1525 | name = tilde_expand (name); | |
1526 | make_cleanup (free, name); | |
1527 | ||
2acceee2 | 1528 | if (option_index > 0) |
c906108c | 1529 | { |
2acceee2 JM |
1530 | /* Print the prompt for the query below. |
1531 | We have to split this up into 3 print statements because | |
1532 | local_hex_string returns a local static string. */ | |
1533 | ||
1534 | printf_filtered ("add symbol table from file \"%s\" at\n", name); | |
1535 | for (i = 0; i < option_index; i++) | |
1536 | { | |
1537 | switch (opt[i].type) | |
1538 | { | |
1539 | case OPT_SECTION: | |
1540 | { | |
1541 | CORE_ADDR addr; | |
1542 | char *val = opt[i].value; | |
1543 | char *sec = opt[i].name; | |
1544 | ||
1545 | val = opt[i].value; | |
1546 | if (val[0] == '0' && val[1] == 'x') | |
1547 | addr = strtoul (val+2, NULL, 16); | |
1548 | else | |
1549 | addr = strtoul (val, NULL, 10); | |
1550 | ||
1551 | if (strcmp (sec, ".text") == 0) | |
1552 | section_addrs.text_addr = addr; | |
1553 | else if (strcmp (sec, ".data") == 0) | |
1554 | section_addrs.data_addr = addr; | |
1555 | else if (strcmp (sec, ".bss") == 0) | |
1556 | section_addrs.bss_addr = addr; | |
1557 | /* Add the section to the others even if it is a | |
1558 | text data or bss section. This is redundent but | |
1559 | eventually, none will be given special treatment */ | |
1560 | { | |
1561 | section_addrs.other[sec_num].name = strdup (sec); | |
1562 | make_cleanup (free, section_addrs.other[sec_num].name); | |
1563 | section_addrs.other[sec_num++].addr = addr; | |
1564 | printf_filtered ("\t%s_addr = %s\n", | |
1565 | sec, | |
1566 | local_hex_string ((unsigned long)addr)); | |
1567 | } | |
1568 | ||
1569 | /* The object's sections are initialized when a | |
1570 | call is made to build_objfile_section_table (objfile). | |
1571 | This happens in reread_symbols. | |
1572 | At this point, we don't know what file type this is, | |
1573 | so we can't determine what section names are valid. */ | |
1574 | } | |
1575 | break; | |
1576 | default: | |
1577 | complain (&unknown_option_complaint, opt[i].name); | |
1578 | } | |
1579 | } | |
1580 | /* Eventually, these hard coded names will be obsolete */ | |
1581 | /* All the addresses will be on the others section */ | |
c906108c SS |
1582 | } |
1583 | else | |
1584 | { | |
2acceee2 JM |
1585 | CORE_ADDR text_addr; |
1586 | target_link (name, &text_addr); | |
a0b3c4fd | 1587 | if (text_addr == (CORE_ADDR) -1) |
2acceee2 JM |
1588 | error("Don't know how to get text start location for this file"); |
1589 | section_addrs.text_addr = text_addr; | |
1590 | section_addrs.data_addr = 0; | |
1591 | section_addrs.bss_addr = 0; | |
1592 | printf_filtered("add symbol table from file \"%s\" at text_addr = %s?\n", | |
1593 | name, local_hex_string ((unsigned long)text_addr)); | |
1594 | } | |
1595 | if (from_tty && (!query ("%s", ""))) | |
c906108c SS |
1596 | error ("Not confirmed."); |
1597 | ||
2df3850c | 1598 | symbol_file_add (name, from_tty, §ion_addrs, 0, flags); |
c906108c SS |
1599 | |
1600 | /* Getting new symbols may change our opinion about what is | |
1601 | frameless. */ | |
1602 | reinit_frame_cache (); | |
1603 | } | |
1604 | \f | |
1605 | static void | |
c5aa993b | 1606 | add_shared_symbol_files_command (args, from_tty) |
c906108c SS |
1607 | char *args; |
1608 | int from_tty; | |
1609 | { | |
1610 | #ifdef ADD_SHARED_SYMBOL_FILES | |
1611 | ADD_SHARED_SYMBOL_FILES (args, from_tty); | |
1612 | #else | |
1613 | error ("This command is not available in this configuration of GDB."); | |
c5aa993b | 1614 | #endif |
c906108c SS |
1615 | } |
1616 | \f | |
1617 | /* Re-read symbols if a symbol-file has changed. */ | |
1618 | void | |
1619 | reread_symbols () | |
1620 | { | |
1621 | struct objfile *objfile; | |
1622 | long new_modtime; | |
1623 | int reread_one = 0; | |
1624 | struct stat new_statbuf; | |
1625 | int res; | |
1626 | ||
1627 | /* With the addition of shared libraries, this should be modified, | |
1628 | the load time should be saved in the partial symbol tables, since | |
1629 | different tables may come from different source files. FIXME. | |
1630 | This routine should then walk down each partial symbol table | |
1631 | and see if the symbol table that it originates from has been changed */ | |
1632 | ||
c5aa993b JM |
1633 | for (objfile = object_files; objfile; objfile = objfile->next) |
1634 | { | |
1635 | if (objfile->obfd) | |
1636 | { | |
c906108c | 1637 | #ifdef IBM6000_TARGET |
c5aa993b JM |
1638 | /* If this object is from a shared library, then you should |
1639 | stat on the library name, not member name. */ | |
c906108c | 1640 | |
c5aa993b JM |
1641 | if (objfile->obfd->my_archive) |
1642 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
1643 | else | |
c906108c | 1644 | #endif |
c5aa993b JM |
1645 | res = stat (objfile->name, &new_statbuf); |
1646 | if (res != 0) | |
c906108c | 1647 | { |
c5aa993b JM |
1648 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
1649 | printf_filtered ("`%s' has disappeared; keeping its symbols.\n", | |
1650 | objfile->name); | |
1651 | continue; | |
c906108c | 1652 | } |
c5aa993b JM |
1653 | new_modtime = new_statbuf.st_mtime; |
1654 | if (new_modtime != objfile->mtime) | |
c906108c | 1655 | { |
c5aa993b JM |
1656 | struct cleanup *old_cleanups; |
1657 | struct section_offsets *offsets; | |
1658 | int num_offsets; | |
c5aa993b JM |
1659 | char *obfd_filename; |
1660 | ||
1661 | printf_filtered ("`%s' has changed; re-reading symbols.\n", | |
1662 | objfile->name); | |
1663 | ||
1664 | /* There are various functions like symbol_file_add, | |
1665 | symfile_bfd_open, syms_from_objfile, etc., which might | |
1666 | appear to do what we want. But they have various other | |
1667 | effects which we *don't* want. So we just do stuff | |
1668 | ourselves. We don't worry about mapped files (for one thing, | |
1669 | any mapped file will be out of date). */ | |
1670 | ||
1671 | /* If we get an error, blow away this objfile (not sure if | |
1672 | that is the correct response for things like shared | |
1673 | libraries). */ | |
1674 | old_cleanups = make_cleanup ((make_cleanup_func) free_objfile, | |
1675 | objfile); | |
1676 | /* We need to do this whenever any symbols go away. */ | |
1677 | make_cleanup ((make_cleanup_func) clear_symtab_users, 0); | |
1678 | ||
1679 | /* Clean up any state BFD has sitting around. We don't need | |
1680 | to close the descriptor but BFD lacks a way of closing the | |
1681 | BFD without closing the descriptor. */ | |
1682 | obfd_filename = bfd_get_filename (objfile->obfd); | |
1683 | if (!bfd_close (objfile->obfd)) | |
1684 | error ("Can't close BFD for %s: %s", objfile->name, | |
1685 | bfd_errmsg (bfd_get_error ())); | |
1686 | objfile->obfd = bfd_openr (obfd_filename, gnutarget); | |
1687 | if (objfile->obfd == NULL) | |
1688 | error ("Can't open %s to read symbols.", objfile->name); | |
1689 | /* bfd_openr sets cacheable to true, which is what we want. */ | |
1690 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
1691 | error ("Can't read symbols from %s: %s.", objfile->name, | |
1692 | bfd_errmsg (bfd_get_error ())); | |
1693 | ||
1694 | /* Save the offsets, we will nuke them with the rest of the | |
1695 | psymbol_obstack. */ | |
1696 | num_offsets = objfile->num_sections; | |
d4f3574e SS |
1697 | offsets = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); |
1698 | memcpy (offsets, objfile->section_offsets, SIZEOF_SECTION_OFFSETS); | |
c5aa993b JM |
1699 | |
1700 | /* Nuke all the state that we will re-read. Much of the following | |
1701 | code which sets things to NULL really is necessary to tell | |
1702 | other parts of GDB that there is nothing currently there. */ | |
1703 | ||
1704 | /* FIXME: Do we have to free a whole linked list, or is this | |
1705 | enough? */ | |
1706 | if (objfile->global_psymbols.list) | |
1707 | mfree (objfile->md, objfile->global_psymbols.list); | |
1708 | memset (&objfile->global_psymbols, 0, | |
1709 | sizeof (objfile->global_psymbols)); | |
1710 | if (objfile->static_psymbols.list) | |
1711 | mfree (objfile->md, objfile->static_psymbols.list); | |
1712 | memset (&objfile->static_psymbols, 0, | |
1713 | sizeof (objfile->static_psymbols)); | |
1714 | ||
1715 | /* Free the obstacks for non-reusable objfiles */ | |
1716 | obstack_free (&objfile->psymbol_cache.cache, 0); | |
1717 | memset (&objfile->psymbol_cache, 0, | |
1718 | sizeof (objfile->psymbol_cache)); | |
1719 | obstack_free (&objfile->psymbol_obstack, 0); | |
1720 | obstack_free (&objfile->symbol_obstack, 0); | |
1721 | obstack_free (&objfile->type_obstack, 0); | |
1722 | objfile->sections = NULL; | |
1723 | objfile->symtabs = NULL; | |
1724 | objfile->psymtabs = NULL; | |
1725 | objfile->free_psymtabs = NULL; | |
1726 | objfile->msymbols = NULL; | |
1727 | objfile->minimal_symbol_count = 0; | |
1728 | objfile->fundamental_types = NULL; | |
1729 | if (objfile->sf != NULL) | |
1730 | { | |
1731 | (*objfile->sf->sym_finish) (objfile); | |
1732 | } | |
1733 | ||
1734 | /* We never make this a mapped file. */ | |
1735 | objfile->md = NULL; | |
1736 | /* obstack_specify_allocation also initializes the obstack so | |
1737 | it is empty. */ | |
1738 | obstack_specify_allocation (&objfile->psymbol_cache.cache, 0, 0, | |
1739 | xmalloc, free); | |
1740 | obstack_specify_allocation (&objfile->psymbol_obstack, 0, 0, | |
1741 | xmalloc, free); | |
1742 | obstack_specify_allocation (&objfile->symbol_obstack, 0, 0, | |
1743 | xmalloc, free); | |
1744 | obstack_specify_allocation (&objfile->type_obstack, 0, 0, | |
1745 | xmalloc, free); | |
1746 | if (build_objfile_section_table (objfile)) | |
1747 | { | |
1748 | error ("Can't find the file sections in `%s': %s", | |
1749 | objfile->name, bfd_errmsg (bfd_get_error ())); | |
1750 | } | |
1751 | ||
1752 | /* We use the same section offsets as from last time. I'm not | |
1753 | sure whether that is always correct for shared libraries. */ | |
1754 | objfile->section_offsets = (struct section_offsets *) | |
d4f3574e SS |
1755 | obstack_alloc (&objfile->psymbol_obstack, SIZEOF_SECTION_OFFSETS); |
1756 | memcpy (objfile->section_offsets, offsets, SIZEOF_SECTION_OFFSETS); | |
c5aa993b JM |
1757 | objfile->num_sections = num_offsets; |
1758 | ||
1759 | /* What the hell is sym_new_init for, anyway? The concept of | |
1760 | distinguishing between the main file and additional files | |
1761 | in this way seems rather dubious. */ | |
1762 | if (objfile == symfile_objfile) | |
1763 | { | |
1764 | (*objfile->sf->sym_new_init) (objfile); | |
c906108c | 1765 | #ifdef HPUXHPPA |
c5aa993b | 1766 | RESET_HP_UX_GLOBALS (); |
c906108c | 1767 | #endif |
c5aa993b JM |
1768 | } |
1769 | ||
1770 | (*objfile->sf->sym_init) (objfile); | |
1771 | clear_complaints (1, 1); | |
1772 | /* The "mainline" parameter is a hideous hack; I think leaving it | |
1773 | zero is OK since dbxread.c also does what it needs to do if | |
1774 | objfile->global_psymbols.size is 0. */ | |
96baa820 | 1775 | (*objfile->sf->sym_read) (objfile, 0); |
c5aa993b JM |
1776 | if (!have_partial_symbols () && !have_full_symbols ()) |
1777 | { | |
1778 | wrap_here (""); | |
1779 | printf_filtered ("(no debugging symbols found)\n"); | |
1780 | wrap_here (""); | |
1781 | } | |
1782 | objfile->flags |= OBJF_SYMS; | |
1783 | ||
1784 | /* We're done reading the symbol file; finish off complaints. */ | |
1785 | clear_complaints (0, 1); | |
c906108c | 1786 | |
c5aa993b JM |
1787 | /* Getting new symbols may change our opinion about what is |
1788 | frameless. */ | |
c906108c | 1789 | |
c5aa993b | 1790 | reinit_frame_cache (); |
c906108c | 1791 | |
c5aa993b JM |
1792 | /* Discard cleanups as symbol reading was successful. */ |
1793 | discard_cleanups (old_cleanups); | |
c906108c | 1794 | |
c5aa993b JM |
1795 | /* If the mtime has changed between the time we set new_modtime |
1796 | and now, we *want* this to be out of date, so don't call stat | |
1797 | again now. */ | |
1798 | objfile->mtime = new_modtime; | |
1799 | reread_one = 1; | |
c906108c | 1800 | |
c5aa993b JM |
1801 | /* Call this after reading in a new symbol table to give target |
1802 | dependant code a crack at the new symbols. For instance, this | |
1803 | could be used to update the values of target-specific symbols GDB | |
1804 | needs to keep track of (such as _sigtramp, or whatever). */ | |
c906108c | 1805 | |
c5aa993b JM |
1806 | TARGET_SYMFILE_POSTREAD (objfile); |
1807 | } | |
c906108c SS |
1808 | } |
1809 | } | |
c906108c SS |
1810 | |
1811 | if (reread_one) | |
1812 | clear_symtab_users (); | |
1813 | } | |
c906108c SS |
1814 | \f |
1815 | ||
c5aa993b JM |
1816 | |
1817 | typedef struct | |
1818 | { | |
1819 | char *ext; | |
c906108c | 1820 | enum language lang; |
c5aa993b JM |
1821 | } |
1822 | filename_language; | |
c906108c | 1823 | |
c5aa993b | 1824 | static filename_language *filename_language_table; |
c906108c SS |
1825 | static int fl_table_size, fl_table_next; |
1826 | ||
1827 | static void | |
1828 | add_filename_language (ext, lang) | |
c5aa993b | 1829 | char *ext; |
c906108c SS |
1830 | enum language lang; |
1831 | { | |
1832 | if (fl_table_next >= fl_table_size) | |
1833 | { | |
1834 | fl_table_size += 10; | |
c5aa993b | 1835 | filename_language_table = realloc (filename_language_table, |
c906108c SS |
1836 | fl_table_size); |
1837 | } | |
1838 | ||
c5aa993b | 1839 | filename_language_table[fl_table_next].ext = strsave (ext); |
c906108c SS |
1840 | filename_language_table[fl_table_next].lang = lang; |
1841 | fl_table_next++; | |
1842 | } | |
1843 | ||
1844 | static char *ext_args; | |
1845 | ||
1846 | static void | |
1847 | set_ext_lang_command (args, from_tty) | |
1848 | char *args; | |
1849 | int from_tty; | |
1850 | { | |
1851 | int i; | |
1852 | char *cp = ext_args; | |
1853 | enum language lang; | |
1854 | ||
1855 | /* First arg is filename extension, starting with '.' */ | |
1856 | if (*cp != '.') | |
1857 | error ("'%s': Filename extension must begin with '.'", ext_args); | |
1858 | ||
1859 | /* Find end of first arg. */ | |
c5aa993b | 1860 | while (*cp && !isspace (*cp)) |
c906108c SS |
1861 | cp++; |
1862 | ||
1863 | if (*cp == '\0') | |
1864 | error ("'%s': two arguments required -- filename extension and language", | |
1865 | ext_args); | |
1866 | ||
1867 | /* Null-terminate first arg */ | |
c5aa993b | 1868 | *cp++ = '\0'; |
c906108c SS |
1869 | |
1870 | /* Find beginning of second arg, which should be a source language. */ | |
1871 | while (*cp && isspace (*cp)) | |
1872 | cp++; | |
1873 | ||
1874 | if (*cp == '\0') | |
1875 | error ("'%s': two arguments required -- filename extension and language", | |
1876 | ext_args); | |
1877 | ||
1878 | /* Lookup the language from among those we know. */ | |
1879 | lang = language_enum (cp); | |
1880 | ||
1881 | /* Now lookup the filename extension: do we already know it? */ | |
1882 | for (i = 0; i < fl_table_next; i++) | |
1883 | if (0 == strcmp (ext_args, filename_language_table[i].ext)) | |
1884 | break; | |
1885 | ||
1886 | if (i >= fl_table_next) | |
1887 | { | |
1888 | /* new file extension */ | |
1889 | add_filename_language (ext_args, lang); | |
1890 | } | |
1891 | else | |
1892 | { | |
1893 | /* redefining a previously known filename extension */ | |
1894 | ||
1895 | /* if (from_tty) */ | |
1896 | /* query ("Really make files of type %s '%s'?", */ | |
1897 | /* ext_args, language_str (lang)); */ | |
1898 | ||
1899 | free (filename_language_table[i].ext); | |
c5aa993b | 1900 | filename_language_table[i].ext = strsave (ext_args); |
c906108c SS |
1901 | filename_language_table[i].lang = lang; |
1902 | } | |
1903 | } | |
1904 | ||
1905 | static void | |
1906 | info_ext_lang_command (args, from_tty) | |
1907 | char *args; | |
c5aa993b | 1908 | int from_tty; |
c906108c SS |
1909 | { |
1910 | int i; | |
1911 | ||
1912 | printf_filtered ("Filename extensions and the languages they represent:"); | |
1913 | printf_filtered ("\n\n"); | |
1914 | for (i = 0; i < fl_table_next; i++) | |
c5aa993b JM |
1915 | printf_filtered ("\t%s\t- %s\n", |
1916 | filename_language_table[i].ext, | |
c906108c SS |
1917 | language_str (filename_language_table[i].lang)); |
1918 | } | |
1919 | ||
1920 | static void | |
1921 | init_filename_language_table () | |
1922 | { | |
1923 | if (fl_table_size == 0) /* protect against repetition */ | |
1924 | { | |
1925 | fl_table_size = 20; | |
1926 | fl_table_next = 0; | |
c5aa993b | 1927 | filename_language_table = |
c906108c | 1928 | xmalloc (fl_table_size * sizeof (*filename_language_table)); |
c5aa993b JM |
1929 | add_filename_language (".c", language_c); |
1930 | add_filename_language (".C", language_cplus); | |
1931 | add_filename_language (".cc", language_cplus); | |
1932 | add_filename_language (".cp", language_cplus); | |
1933 | add_filename_language (".cpp", language_cplus); | |
1934 | add_filename_language (".cxx", language_cplus); | |
1935 | add_filename_language (".c++", language_cplus); | |
1936 | add_filename_language (".java", language_java); | |
c906108c | 1937 | add_filename_language (".class", language_java); |
c5aa993b JM |
1938 | add_filename_language (".ch", language_chill); |
1939 | add_filename_language (".c186", language_chill); | |
1940 | add_filename_language (".c286", language_chill); | |
1941 | add_filename_language (".f", language_fortran); | |
1942 | add_filename_language (".F", language_fortran); | |
1943 | add_filename_language (".s", language_asm); | |
1944 | add_filename_language (".S", language_asm); | |
c906108c SS |
1945 | } |
1946 | } | |
1947 | ||
1948 | enum language | |
1949 | deduce_language_from_filename (filename) | |
1950 | char *filename; | |
1951 | { | |
1952 | int i; | |
1953 | char *cp; | |
1954 | ||
1955 | if (filename != NULL) | |
1956 | if ((cp = strrchr (filename, '.')) != NULL) | |
1957 | for (i = 0; i < fl_table_next; i++) | |
1958 | if (strcmp (cp, filename_language_table[i].ext) == 0) | |
1959 | return filename_language_table[i].lang; | |
1960 | ||
1961 | return language_unknown; | |
1962 | } | |
1963 | \f | |
1964 | /* allocate_symtab: | |
1965 | ||
1966 | Allocate and partly initialize a new symbol table. Return a pointer | |
1967 | to it. error() if no space. | |
1968 | ||
1969 | Caller must set these fields: | |
c5aa993b JM |
1970 | LINETABLE(symtab) |
1971 | symtab->blockvector | |
1972 | symtab->dirname | |
1973 | symtab->free_code | |
1974 | symtab->free_ptr | |
1975 | possibly free_named_symtabs (symtab->filename); | |
c906108c SS |
1976 | */ |
1977 | ||
1978 | struct symtab * | |
1979 | allocate_symtab (filename, objfile) | |
1980 | char *filename; | |
1981 | struct objfile *objfile; | |
1982 | { | |
1983 | register struct symtab *symtab; | |
1984 | ||
1985 | symtab = (struct symtab *) | |
c5aa993b | 1986 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct symtab)); |
c906108c | 1987 | memset (symtab, 0, sizeof (*symtab)); |
c5aa993b JM |
1988 | symtab->filename = obsavestring (filename, strlen (filename), |
1989 | &objfile->symbol_obstack); | |
1990 | symtab->fullname = NULL; | |
1991 | symtab->language = deduce_language_from_filename (filename); | |
1992 | symtab->debugformat = obsavestring ("unknown", 7, | |
1993 | &objfile->symbol_obstack); | |
c906108c SS |
1994 | |
1995 | /* Hook it to the objfile it comes from */ | |
1996 | ||
c5aa993b JM |
1997 | symtab->objfile = objfile; |
1998 | symtab->next = objfile->symtabs; | |
1999 | objfile->symtabs = symtab; | |
c906108c SS |
2000 | |
2001 | /* FIXME: This should go away. It is only defined for the Z8000, | |
2002 | and the Z8000 definition of this macro doesn't have anything to | |
2003 | do with the now-nonexistent EXTRA_SYMTAB_INFO macro, it's just | |
2004 | here for convenience. */ | |
2005 | #ifdef INIT_EXTRA_SYMTAB_INFO | |
2006 | INIT_EXTRA_SYMTAB_INFO (symtab); | |
2007 | #endif | |
2008 | ||
2009 | return (symtab); | |
2010 | } | |
2011 | ||
2012 | struct partial_symtab * | |
2013 | allocate_psymtab (filename, objfile) | |
2014 | char *filename; | |
2015 | struct objfile *objfile; | |
2016 | { | |
2017 | struct partial_symtab *psymtab; | |
2018 | ||
c5aa993b | 2019 | if (objfile->free_psymtabs) |
c906108c | 2020 | { |
c5aa993b JM |
2021 | psymtab = objfile->free_psymtabs; |
2022 | objfile->free_psymtabs = psymtab->next; | |
c906108c SS |
2023 | } |
2024 | else | |
2025 | psymtab = (struct partial_symtab *) | |
c5aa993b | 2026 | obstack_alloc (&objfile->psymbol_obstack, |
c906108c SS |
2027 | sizeof (struct partial_symtab)); |
2028 | ||
2029 | memset (psymtab, 0, sizeof (struct partial_symtab)); | |
c5aa993b JM |
2030 | psymtab->filename = obsavestring (filename, strlen (filename), |
2031 | &objfile->psymbol_obstack); | |
2032 | psymtab->symtab = NULL; | |
c906108c SS |
2033 | |
2034 | /* Prepend it to the psymtab list for the objfile it belongs to. | |
2035 | Psymtabs are searched in most recent inserted -> least recent | |
2036 | inserted order. */ | |
2037 | ||
c5aa993b JM |
2038 | psymtab->objfile = objfile; |
2039 | psymtab->next = objfile->psymtabs; | |
2040 | objfile->psymtabs = psymtab; | |
c906108c SS |
2041 | #if 0 |
2042 | { | |
2043 | struct partial_symtab **prev_pst; | |
c5aa993b JM |
2044 | psymtab->objfile = objfile; |
2045 | psymtab->next = NULL; | |
2046 | prev_pst = &(objfile->psymtabs); | |
c906108c | 2047 | while ((*prev_pst) != NULL) |
c5aa993b | 2048 | prev_pst = &((*prev_pst)->next); |
c906108c | 2049 | (*prev_pst) = psymtab; |
c5aa993b | 2050 | } |
c906108c | 2051 | #endif |
c5aa993b | 2052 | |
c906108c SS |
2053 | return (psymtab); |
2054 | } | |
2055 | ||
2056 | void | |
2057 | discard_psymtab (pst) | |
2058 | struct partial_symtab *pst; | |
2059 | { | |
2060 | struct partial_symtab **prev_pst; | |
2061 | ||
2062 | /* From dbxread.c: | |
2063 | Empty psymtabs happen as a result of header files which don't | |
2064 | have any symbols in them. There can be a lot of them. But this | |
2065 | check is wrong, in that a psymtab with N_SLINE entries but | |
2066 | nothing else is not empty, but we don't realize that. Fixing | |
2067 | that without slowing things down might be tricky. */ | |
2068 | ||
2069 | /* First, snip it out of the psymtab chain */ | |
2070 | ||
2071 | prev_pst = &(pst->objfile->psymtabs); | |
2072 | while ((*prev_pst) != pst) | |
2073 | prev_pst = &((*prev_pst)->next); | |
2074 | (*prev_pst) = pst->next; | |
2075 | ||
2076 | /* Next, put it on a free list for recycling */ | |
2077 | ||
2078 | pst->next = pst->objfile->free_psymtabs; | |
2079 | pst->objfile->free_psymtabs = pst; | |
2080 | } | |
c906108c | 2081 | \f |
c5aa993b | 2082 | |
c906108c SS |
2083 | /* Reset all data structures in gdb which may contain references to symbol |
2084 | table data. */ | |
2085 | ||
2086 | void | |
2087 | clear_symtab_users () | |
2088 | { | |
2089 | /* Someday, we should do better than this, by only blowing away | |
2090 | the things that really need to be blown. */ | |
2091 | clear_value_history (); | |
2092 | clear_displays (); | |
2093 | clear_internalvars (); | |
2094 | breakpoint_re_set (); | |
2095 | set_default_breakpoint (0, 0, 0, 0); | |
2096 | current_source_symtab = 0; | |
2097 | current_source_line = 0; | |
2098 | clear_pc_function_cache (); | |
2099 | target_new_objfile (NULL); | |
2100 | } | |
2101 | ||
2102 | /* clear_symtab_users_once: | |
2103 | ||
2104 | This function is run after symbol reading, or from a cleanup. | |
2105 | If an old symbol table was obsoleted, the old symbol table | |
2106 | has been blown away, but the other GDB data structures that may | |
2107 | reference it have not yet been cleared or re-directed. (The old | |
2108 | symtab was zapped, and the cleanup queued, in free_named_symtab() | |
2109 | below.) | |
2110 | ||
2111 | This function can be queued N times as a cleanup, or called | |
2112 | directly; it will do all the work the first time, and then will be a | |
2113 | no-op until the next time it is queued. This works by bumping a | |
2114 | counter at queueing time. Much later when the cleanup is run, or at | |
2115 | the end of symbol processing (in case the cleanup is discarded), if | |
2116 | the queued count is greater than the "done-count", we do the work | |
2117 | and set the done-count to the queued count. If the queued count is | |
2118 | less than or equal to the done-count, we just ignore the call. This | |
2119 | is needed because reading a single .o file will often replace many | |
2120 | symtabs (one per .h file, for example), and we don't want to reset | |
2121 | the breakpoints N times in the user's face. | |
2122 | ||
2123 | The reason we both queue a cleanup, and call it directly after symbol | |
2124 | reading, is because the cleanup protects us in case of errors, but is | |
2125 | discarded if symbol reading is successful. */ | |
2126 | ||
2127 | #if 0 | |
2128 | /* FIXME: As free_named_symtabs is currently a big noop this function | |
2129 | is no longer needed. */ | |
2130 | static void | |
2131 | clear_symtab_users_once PARAMS ((void)); | |
2132 | ||
2133 | static int clear_symtab_users_queued; | |
2134 | static int clear_symtab_users_done; | |
2135 | ||
2136 | static void | |
2137 | clear_symtab_users_once () | |
2138 | { | |
2139 | /* Enforce once-per-`do_cleanups'-semantics */ | |
2140 | if (clear_symtab_users_queued <= clear_symtab_users_done) | |
2141 | return; | |
2142 | clear_symtab_users_done = clear_symtab_users_queued; | |
2143 | ||
2144 | clear_symtab_users (); | |
2145 | } | |
2146 | #endif | |
2147 | ||
2148 | /* Delete the specified psymtab, and any others that reference it. */ | |
2149 | ||
2150 | static void | |
2151 | cashier_psymtab (pst) | |
2152 | struct partial_symtab *pst; | |
2153 | { | |
2154 | struct partial_symtab *ps, *pprev = NULL; | |
2155 | int i; | |
2156 | ||
2157 | /* Find its previous psymtab in the chain */ | |
c5aa993b JM |
2158 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) |
2159 | { | |
2160 | if (ps == pst) | |
2161 | break; | |
2162 | pprev = ps; | |
2163 | } | |
c906108c | 2164 | |
c5aa993b JM |
2165 | if (ps) |
2166 | { | |
2167 | /* Unhook it from the chain. */ | |
2168 | if (ps == pst->objfile->psymtabs) | |
2169 | pst->objfile->psymtabs = ps->next; | |
2170 | else | |
2171 | pprev->next = ps->next; | |
2172 | ||
2173 | /* FIXME, we can't conveniently deallocate the entries in the | |
2174 | partial_symbol lists (global_psymbols/static_psymbols) that | |
2175 | this psymtab points to. These just take up space until all | |
2176 | the psymtabs are reclaimed. Ditto the dependencies list and | |
2177 | filename, which are all in the psymbol_obstack. */ | |
2178 | ||
2179 | /* We need to cashier any psymtab that has this one as a dependency... */ | |
2180 | again: | |
2181 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) | |
2182 | { | |
2183 | for (i = 0; i < ps->number_of_dependencies; i++) | |
2184 | { | |
2185 | if (ps->dependencies[i] == pst) | |
2186 | { | |
2187 | cashier_psymtab (ps); | |
2188 | goto again; /* Must restart, chain has been munged. */ | |
2189 | } | |
2190 | } | |
c906108c | 2191 | } |
c906108c | 2192 | } |
c906108c SS |
2193 | } |
2194 | ||
2195 | /* If a symtab or psymtab for filename NAME is found, free it along | |
2196 | with any dependent breakpoints, displays, etc. | |
2197 | Used when loading new versions of object modules with the "add-file" | |
2198 | command. This is only called on the top-level symtab or psymtab's name; | |
2199 | it is not called for subsidiary files such as .h files. | |
2200 | ||
2201 | Return value is 1 if we blew away the environment, 0 if not. | |
2202 | FIXME. The return valu appears to never be used. | |
2203 | ||
2204 | FIXME. I think this is not the best way to do this. We should | |
2205 | work on being gentler to the environment while still cleaning up | |
2206 | all stray pointers into the freed symtab. */ | |
2207 | ||
2208 | int | |
2209 | free_named_symtabs (name) | |
2210 | char *name; | |
2211 | { | |
2212 | #if 0 | |
2213 | /* FIXME: With the new method of each objfile having it's own | |
2214 | psymtab list, this function needs serious rethinking. In particular, | |
2215 | why was it ever necessary to toss psymtabs with specific compilation | |
2216 | unit filenames, as opposed to all psymtabs from a particular symbol | |
2217 | file? -- fnf | |
2218 | Well, the answer is that some systems permit reloading of particular | |
2219 | compilation units. We want to blow away any old info about these | |
2220 | compilation units, regardless of which objfiles they arrived in. --gnu. */ | |
2221 | ||
2222 | register struct symtab *s; | |
2223 | register struct symtab *prev; | |
2224 | register struct partial_symtab *ps; | |
2225 | struct blockvector *bv; | |
2226 | int blewit = 0; | |
2227 | ||
2228 | /* We only wack things if the symbol-reload switch is set. */ | |
2229 | if (!symbol_reloading) | |
2230 | return 0; | |
2231 | ||
2232 | /* Some symbol formats have trouble providing file names... */ | |
2233 | if (name == 0 || *name == '\0') | |
2234 | return 0; | |
2235 | ||
2236 | /* Look for a psymtab with the specified name. */ | |
2237 | ||
2238 | again2: | |
c5aa993b JM |
2239 | for (ps = partial_symtab_list; ps; ps = ps->next) |
2240 | { | |
2241 | if (STREQ (name, ps->filename)) | |
2242 | { | |
2243 | cashier_psymtab (ps); /* Blow it away...and its little dog, too. */ | |
2244 | goto again2; /* Must restart, chain has been munged */ | |
2245 | } | |
c906108c | 2246 | } |
c906108c SS |
2247 | |
2248 | /* Look for a symtab with the specified name. */ | |
2249 | ||
2250 | for (s = symtab_list; s; s = s->next) | |
2251 | { | |
2252 | if (STREQ (name, s->filename)) | |
2253 | break; | |
2254 | prev = s; | |
2255 | } | |
2256 | ||
2257 | if (s) | |
2258 | { | |
2259 | if (s == symtab_list) | |
2260 | symtab_list = s->next; | |
2261 | else | |
2262 | prev->next = s->next; | |
2263 | ||
2264 | /* For now, queue a delete for all breakpoints, displays, etc., whether | |
c5aa993b JM |
2265 | or not they depend on the symtab being freed. This should be |
2266 | changed so that only those data structures affected are deleted. */ | |
c906108c SS |
2267 | |
2268 | /* But don't delete anything if the symtab is empty. | |
c5aa993b JM |
2269 | This test is necessary due to a bug in "dbxread.c" that |
2270 | causes empty symtabs to be created for N_SO symbols that | |
2271 | contain the pathname of the object file. (This problem | |
2272 | has been fixed in GDB 3.9x). */ | |
c906108c SS |
2273 | |
2274 | bv = BLOCKVECTOR (s); | |
2275 | if (BLOCKVECTOR_NBLOCKS (bv) > 2 | |
2276 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) | |
2277 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK))) | |
2278 | { | |
2279 | complain (&oldsyms_complaint, name); | |
2280 | ||
2281 | clear_symtab_users_queued++; | |
2282 | make_cleanup (clear_symtab_users_once, 0); | |
2283 | blewit = 1; | |
c5aa993b JM |
2284 | } |
2285 | else | |
2286 | { | |
c906108c SS |
2287 | complain (&empty_symtab_complaint, name); |
2288 | } | |
2289 | ||
2290 | free_symtab (s); | |
2291 | } | |
2292 | else | |
2293 | { | |
2294 | /* It is still possible that some breakpoints will be affected | |
c5aa993b JM |
2295 | even though no symtab was found, since the file might have |
2296 | been compiled without debugging, and hence not be associated | |
2297 | with a symtab. In order to handle this correctly, we would need | |
2298 | to keep a list of text address ranges for undebuggable files. | |
2299 | For now, we do nothing, since this is a fairly obscure case. */ | |
c906108c SS |
2300 | ; |
2301 | } | |
2302 | ||
2303 | /* FIXME, what about the minimal symbol table? */ | |
2304 | return blewit; | |
2305 | #else | |
2306 | return (0); | |
2307 | #endif | |
2308 | } | |
2309 | \f | |
2310 | /* Allocate and partially fill a partial symtab. It will be | |
2311 | completely filled at the end of the symbol list. | |
2312 | ||
d4f3574e | 2313 | FILENAME is the name of the symbol-file we are reading from. */ |
c906108c SS |
2314 | |
2315 | struct partial_symtab * | |
2316 | start_psymtab_common (objfile, section_offsets, | |
2317 | filename, textlow, global_syms, static_syms) | |
2318 | struct objfile *objfile; | |
2319 | struct section_offsets *section_offsets; | |
2320 | char *filename; | |
2321 | CORE_ADDR textlow; | |
2322 | struct partial_symbol **global_syms; | |
2323 | struct partial_symbol **static_syms; | |
2324 | { | |
2325 | struct partial_symtab *psymtab; | |
2326 | ||
2327 | psymtab = allocate_psymtab (filename, objfile); | |
c5aa993b JM |
2328 | psymtab->section_offsets = section_offsets; |
2329 | psymtab->textlow = textlow; | |
2330 | psymtab->texthigh = psymtab->textlow; /* default */ | |
2331 | psymtab->globals_offset = global_syms - objfile->global_psymbols.list; | |
2332 | psymtab->statics_offset = static_syms - objfile->static_psymbols.list; | |
c906108c SS |
2333 | return (psymtab); |
2334 | } | |
2335 | \f | |
2336 | /* Add a symbol with a long value to a psymtab. | |
2337 | Since one arg is a struct, we pass in a ptr and deref it (sigh). */ | |
2338 | ||
2339 | void | |
2340 | add_psymbol_to_list (name, namelength, namespace, class, list, val, coreaddr, | |
2341 | language, objfile) | |
2342 | char *name; | |
2343 | int namelength; | |
2344 | namespace_enum namespace; | |
2345 | enum address_class class; | |
2346 | struct psymbol_allocation_list *list; | |
c5aa993b JM |
2347 | long val; /* Value as a long */ |
2348 | CORE_ADDR coreaddr; /* Value as a CORE_ADDR */ | |
c906108c SS |
2349 | enum language language; |
2350 | struct objfile *objfile; | |
2351 | { | |
2352 | register struct partial_symbol *psym; | |
2353 | char *buf = alloca (namelength + 1); | |
2354 | /* psymbol is static so that there will be no uninitialized gaps in the | |
2355 | structure which might contain random data, causing cache misses in | |
2356 | bcache. */ | |
2357 | static struct partial_symbol psymbol; | |
2358 | ||
2359 | /* Create local copy of the partial symbol */ | |
2360 | memcpy (buf, name, namelength); | |
2361 | buf[namelength] = '\0'; | |
2362 | SYMBOL_NAME (&psymbol) = bcache (buf, namelength + 1, &objfile->psymbol_cache); | |
2363 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ | |
2364 | if (val != 0) | |
2365 | { | |
2366 | SYMBOL_VALUE (&psymbol) = val; | |
2367 | } | |
2368 | else | |
2369 | { | |
2370 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; | |
2371 | } | |
2372 | SYMBOL_SECTION (&psymbol) = 0; | |
2373 | SYMBOL_LANGUAGE (&psymbol) = language; | |
2374 | PSYMBOL_NAMESPACE (&psymbol) = namespace; | |
2375 | PSYMBOL_CLASS (&psymbol) = class; | |
2376 | SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol, language); | |
2377 | ||
2378 | /* Stash the partial symbol away in the cache */ | |
2379 | psym = bcache (&psymbol, sizeof (struct partial_symbol), &objfile->psymbol_cache); | |
2380 | ||
2381 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ | |
2382 | if (list->next >= list->list + list->size) | |
2383 | { | |
2384 | extend_psymbol_list (list, objfile); | |
2385 | } | |
2386 | *list->next++ = psym; | |
2387 | OBJSTAT (objfile, n_psyms++); | |
2388 | } | |
2389 | ||
2390 | /* Add a symbol with a long value to a psymtab. This differs from | |
2391 | * add_psymbol_to_list above in taking both a mangled and a demangled | |
2392 | * name. */ | |
2393 | ||
2394 | void | |
2395 | add_psymbol_with_dem_name_to_list (name, namelength, dem_name, dem_namelength, | |
c5aa993b | 2396 | namespace, class, list, val, coreaddr, language, objfile) |
c906108c SS |
2397 | char *name; |
2398 | int namelength; | |
2399 | char *dem_name; | |
2400 | int dem_namelength; | |
2401 | namespace_enum namespace; | |
2402 | enum address_class class; | |
2403 | struct psymbol_allocation_list *list; | |
c5aa993b JM |
2404 | long val; /* Value as a long */ |
2405 | CORE_ADDR coreaddr; /* Value as a CORE_ADDR */ | |
c906108c SS |
2406 | enum language language; |
2407 | struct objfile *objfile; | |
2408 | { | |
2409 | register struct partial_symbol *psym; | |
2410 | char *buf = alloca (namelength + 1); | |
2411 | /* psymbol is static so that there will be no uninitialized gaps in the | |
2412 | structure which might contain random data, causing cache misses in | |
2413 | bcache. */ | |
2414 | static struct partial_symbol psymbol; | |
2415 | ||
2416 | /* Create local copy of the partial symbol */ | |
2417 | ||
2418 | memcpy (buf, name, namelength); | |
2419 | buf[namelength] = '\0'; | |
2420 | SYMBOL_NAME (&psymbol) = bcache (buf, namelength + 1, &objfile->psymbol_cache); | |
2421 | ||
2422 | buf = alloca (dem_namelength + 1); | |
2423 | memcpy (buf, dem_name, dem_namelength); | |
2424 | buf[dem_namelength] = '\0'; | |
c5aa993b | 2425 | |
c906108c SS |
2426 | switch (language) |
2427 | { | |
c5aa993b JM |
2428 | case language_c: |
2429 | case language_cplus: | |
2430 | SYMBOL_CPLUS_DEMANGLED_NAME (&psymbol) = | |
2431 | bcache (buf, dem_namelength + 1, &objfile->psymbol_cache); | |
2432 | break; | |
2433 | case language_chill: | |
2434 | SYMBOL_CHILL_DEMANGLED_NAME (&psymbol) = | |
2435 | bcache (buf, dem_namelength + 1, &objfile->psymbol_cache); | |
2436 | ||
c906108c SS |
2437 | /* FIXME What should be done for the default case? Ignoring for now. */ |
2438 | } | |
2439 | ||
2440 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ | |
2441 | if (val != 0) | |
2442 | { | |
2443 | SYMBOL_VALUE (&psymbol) = val; | |
2444 | } | |
2445 | else | |
2446 | { | |
2447 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; | |
2448 | } | |
2449 | SYMBOL_SECTION (&psymbol) = 0; | |
2450 | SYMBOL_LANGUAGE (&psymbol) = language; | |
2451 | PSYMBOL_NAMESPACE (&psymbol) = namespace; | |
2452 | PSYMBOL_CLASS (&psymbol) = class; | |
2453 | SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol, language); | |
2454 | ||
2455 | /* Stash the partial symbol away in the cache */ | |
2456 | psym = bcache (&psymbol, sizeof (struct partial_symbol), &objfile->psymbol_cache); | |
2457 | ||
2458 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ | |
2459 | if (list->next >= list->list + list->size) | |
2460 | { | |
2461 | extend_psymbol_list (list, objfile); | |
2462 | } | |
2463 | *list->next++ = psym; | |
2464 | OBJSTAT (objfile, n_psyms++); | |
2465 | } | |
2466 | ||
2467 | /* Initialize storage for partial symbols. */ | |
2468 | ||
2469 | void | |
2470 | init_psymbol_list (objfile, total_symbols) | |
2471 | struct objfile *objfile; | |
2472 | int total_symbols; | |
2473 | { | |
2474 | /* Free any previously allocated psymbol lists. */ | |
c5aa993b JM |
2475 | |
2476 | if (objfile->global_psymbols.list) | |
c906108c | 2477 | { |
c5aa993b | 2478 | mfree (objfile->md, (PTR) objfile->global_psymbols.list); |
c906108c | 2479 | } |
c5aa993b | 2480 | if (objfile->static_psymbols.list) |
c906108c | 2481 | { |
c5aa993b | 2482 | mfree (objfile->md, (PTR) objfile->static_psymbols.list); |
c906108c | 2483 | } |
c5aa993b | 2484 | |
c906108c SS |
2485 | /* Current best guess is that approximately a twentieth |
2486 | of the total symbols (in a debugging file) are global or static | |
2487 | oriented symbols */ | |
c906108c | 2488 | |
c5aa993b JM |
2489 | objfile->global_psymbols.size = total_symbols / 10; |
2490 | objfile->static_psymbols.size = total_symbols / 10; | |
2491 | ||
2492 | if (objfile->global_psymbols.size > 0) | |
c906108c | 2493 | { |
c5aa993b JM |
2494 | objfile->global_psymbols.next = |
2495 | objfile->global_psymbols.list = (struct partial_symbol **) | |
2496 | xmmalloc (objfile->md, (objfile->global_psymbols.size | |
2497 | * sizeof (struct partial_symbol *))); | |
c906108c | 2498 | } |
c5aa993b | 2499 | if (objfile->static_psymbols.size > 0) |
c906108c | 2500 | { |
c5aa993b JM |
2501 | objfile->static_psymbols.next = |
2502 | objfile->static_psymbols.list = (struct partial_symbol **) | |
2503 | xmmalloc (objfile->md, (objfile->static_psymbols.size | |
2504 | * sizeof (struct partial_symbol *))); | |
c906108c SS |
2505 | } |
2506 | } | |
2507 | ||
2508 | /* OVERLAYS: | |
2509 | The following code implements an abstraction for debugging overlay sections. | |
2510 | ||
2511 | The target model is as follows: | |
2512 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2513 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2514 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2515 | sections, one by one, from the load address into the VMA address. |
c906108c | 2516 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2517 | sections should be considered to be mapped from the VMA to the LMA. |
2518 | This information is used for symbol lookup, and memory read/write. | |
2519 | For instance, if a section has been mapped then its contents | |
2520 | should be read from the VMA, otherwise from the LMA. | |
c906108c SS |
2521 | |
2522 | Two levels of debugger support for overlays are available. One is | |
2523 | "manual", in which the debugger relies on the user to tell it which | |
2524 | overlays are currently mapped. This level of support is | |
2525 | implemented entirely in the core debugger, and the information about | |
2526 | whether a section is mapped is kept in the objfile->obj_section table. | |
2527 | ||
2528 | The second level of support is "automatic", and is only available if | |
2529 | the target-specific code provides functionality to read the target's | |
2530 | overlay mapping table, and translate its contents for the debugger | |
2531 | (by updating the mapped state information in the obj_section tables). | |
2532 | ||
2533 | The interface is as follows: | |
c5aa993b JM |
2534 | User commands: |
2535 | overlay map <name> -- tell gdb to consider this section mapped | |
2536 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2537 | overlay list -- list the sections that GDB thinks are mapped | |
2538 | overlay read-target -- get the target's state of what's mapped | |
2539 | overlay off/manual/auto -- set overlay debugging state | |
2540 | Functional interface: | |
2541 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2542 | section, return that section. | |
2543 | find_pc_overlay(pc): find any overlay section that contains | |
2544 | the pc, either in its VMA or its LMA | |
2545 | overlay_is_mapped(sect): true if overlay is marked as mapped | |
2546 | section_is_overlay(sect): true if section's VMA != LMA | |
2547 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2548 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
2549 | overlay_mapped_address(...): map an address from section's LMA to VMA | |
2550 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2551 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2552 | either in VMA or LMA depending on whether | |
2553 | the symbol's section is currently mapped | |
c906108c SS |
2554 | */ |
2555 | ||
2556 | /* Overlay debugging state: */ | |
2557 | ||
2558 | int overlay_debugging = 0; /* 0 == off, 1 == manual, -1 == auto */ | |
2559 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state */ | |
2560 | ||
2561 | /* Target vector for refreshing overlay mapped state */ | |
2562 | static void simple_overlay_update PARAMS ((struct obj_section *)); | |
c5aa993b JM |
2563 | void (*target_overlay_update) PARAMS ((struct obj_section *)) |
2564 | = simple_overlay_update; | |
c906108c SS |
2565 | |
2566 | /* Function: section_is_overlay (SECTION) | |
2567 | Returns true if SECTION has VMA not equal to LMA, ie. | |
2568 | SECTION is loaded at an address different from where it will "run". */ | |
2569 | ||
2570 | int | |
2571 | section_is_overlay (section) | |
2572 | asection *section; | |
2573 | { | |
2574 | if (overlay_debugging) | |
2575 | if (section && section->lma != 0 && | |
2576 | section->vma != section->lma) | |
2577 | return 1; | |
2578 | ||
2579 | return 0; | |
2580 | } | |
2581 | ||
2582 | /* Function: overlay_invalidate_all (void) | |
2583 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
2584 | ||
2585 | static void | |
2586 | overlay_invalidate_all () | |
2587 | { | |
c5aa993b | 2588 | struct objfile *objfile; |
c906108c SS |
2589 | struct obj_section *sect; |
2590 | ||
2591 | ALL_OBJSECTIONS (objfile, sect) | |
2592 | if (section_is_overlay (sect->the_bfd_section)) | |
c5aa993b | 2593 | sect->ovly_mapped = -1; |
c906108c SS |
2594 | } |
2595 | ||
2596 | /* Function: overlay_is_mapped (SECTION) | |
2597 | Returns true if section is an overlay, and is currently mapped. | |
2598 | Private: public access is thru function section_is_mapped. | |
2599 | ||
2600 | Access to the ovly_mapped flag is restricted to this function, so | |
2601 | that we can do automatic update. If the global flag | |
2602 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
2603 | overlay_invalidate_all. If the mapped state of the particular | |
2604 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
2605 | ||
c5aa993b | 2606 | static int |
c906108c SS |
2607 | overlay_is_mapped (osect) |
2608 | struct obj_section *osect; | |
2609 | { | |
2610 | if (osect == 0 || !section_is_overlay (osect->the_bfd_section)) | |
2611 | return 0; | |
2612 | ||
c5aa993b | 2613 | switch (overlay_debugging) |
c906108c SS |
2614 | { |
2615 | default: | |
c5aa993b JM |
2616 | case 0: |
2617 | return 0; /* overlay debugging off */ | |
c906108c SS |
2618 | case -1: /* overlay debugging automatic */ |
2619 | /* Unles there is a target_overlay_update function, | |
c5aa993b | 2620 | there's really nothing useful to do here (can't really go auto) */ |
c906108c SS |
2621 | if (target_overlay_update) |
2622 | { | |
2623 | if (overlay_cache_invalid) | |
2624 | { | |
2625 | overlay_invalidate_all (); | |
2626 | overlay_cache_invalid = 0; | |
2627 | } | |
2628 | if (osect->ovly_mapped == -1) | |
2629 | (*target_overlay_update) (osect); | |
2630 | } | |
2631 | /* fall thru to manual case */ | |
2632 | case 1: /* overlay debugging manual */ | |
2633 | return osect->ovly_mapped == 1; | |
2634 | } | |
2635 | } | |
2636 | ||
2637 | /* Function: section_is_mapped | |
2638 | Returns true if section is an overlay, and is currently mapped. */ | |
2639 | ||
2640 | int | |
2641 | section_is_mapped (section) | |
2642 | asection *section; | |
2643 | { | |
c5aa993b | 2644 | struct objfile *objfile; |
c906108c SS |
2645 | struct obj_section *osect; |
2646 | ||
2647 | if (overlay_debugging) | |
2648 | if (section && section_is_overlay (section)) | |
2649 | ALL_OBJSECTIONS (objfile, osect) | |
2650 | if (osect->the_bfd_section == section) | |
c5aa993b | 2651 | return overlay_is_mapped (osect); |
c906108c SS |
2652 | |
2653 | return 0; | |
2654 | } | |
2655 | ||
2656 | /* Function: pc_in_unmapped_range | |
2657 | If PC falls into the lma range of SECTION, return true, else false. */ | |
2658 | ||
2659 | CORE_ADDR | |
2660 | pc_in_unmapped_range (pc, section) | |
2661 | CORE_ADDR pc; | |
2662 | asection *section; | |
2663 | { | |
2664 | int size; | |
2665 | ||
2666 | if (overlay_debugging) | |
2667 | if (section && section_is_overlay (section)) | |
2668 | { | |
2669 | size = bfd_get_section_size_before_reloc (section); | |
2670 | if (section->lma <= pc && pc < section->lma + size) | |
2671 | return 1; | |
2672 | } | |
2673 | return 0; | |
2674 | } | |
2675 | ||
2676 | /* Function: pc_in_mapped_range | |
2677 | If PC falls into the vma range of SECTION, return true, else false. */ | |
2678 | ||
2679 | CORE_ADDR | |
2680 | pc_in_mapped_range (pc, section) | |
2681 | CORE_ADDR pc; | |
2682 | asection *section; | |
2683 | { | |
2684 | int size; | |
2685 | ||
2686 | if (overlay_debugging) | |
2687 | if (section && section_is_overlay (section)) | |
2688 | { | |
2689 | size = bfd_get_section_size_before_reloc (section); | |
2690 | if (section->vma <= pc && pc < section->vma + size) | |
2691 | return 1; | |
2692 | } | |
2693 | return 0; | |
2694 | } | |
2695 | ||
2696 | /* Function: overlay_unmapped_address (PC, SECTION) | |
2697 | Returns the address corresponding to PC in the unmapped (load) range. | |
2698 | May be the same as PC. */ | |
2699 | ||
2700 | CORE_ADDR | |
2701 | overlay_unmapped_address (pc, section) | |
2702 | CORE_ADDR pc; | |
2703 | asection *section; | |
2704 | { | |
2705 | if (overlay_debugging) | |
2706 | if (section && section_is_overlay (section) && | |
2707 | pc_in_mapped_range (pc, section)) | |
2708 | return pc + section->lma - section->vma; | |
2709 | ||
2710 | return pc; | |
2711 | } | |
2712 | ||
2713 | /* Function: overlay_mapped_address (PC, SECTION) | |
2714 | Returns the address corresponding to PC in the mapped (runtime) range. | |
2715 | May be the same as PC. */ | |
2716 | ||
2717 | CORE_ADDR | |
2718 | overlay_mapped_address (pc, section) | |
2719 | CORE_ADDR pc; | |
2720 | asection *section; | |
2721 | { | |
2722 | if (overlay_debugging) | |
2723 | if (section && section_is_overlay (section) && | |
2724 | pc_in_unmapped_range (pc, section)) | |
2725 | return pc + section->vma - section->lma; | |
2726 | ||
2727 | return pc; | |
2728 | } | |
2729 | ||
2730 | ||
2731 | /* Function: symbol_overlayed_address | |
2732 | Return one of two addresses (relative to the VMA or to the LMA), | |
2733 | depending on whether the section is mapped or not. */ | |
2734 | ||
c5aa993b | 2735 | CORE_ADDR |
c906108c SS |
2736 | symbol_overlayed_address (address, section) |
2737 | CORE_ADDR address; | |
2738 | asection *section; | |
2739 | { | |
2740 | if (overlay_debugging) | |
2741 | { | |
2742 | /* If the symbol has no section, just return its regular address. */ | |
2743 | if (section == 0) | |
2744 | return address; | |
2745 | /* If the symbol's section is not an overlay, just return its address */ | |
2746 | if (!section_is_overlay (section)) | |
2747 | return address; | |
2748 | /* If the symbol's section is mapped, just return its address */ | |
2749 | if (section_is_mapped (section)) | |
2750 | return address; | |
2751 | /* | |
2752 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
2753 | * then return its LOADED address rather than its vma address!! | |
2754 | */ | |
2755 | return overlay_unmapped_address (address, section); | |
2756 | } | |
2757 | return address; | |
2758 | } | |
2759 | ||
2760 | /* Function: find_pc_overlay (PC) | |
2761 | Return the best-match overlay section for PC: | |
2762 | If PC matches a mapped overlay section's VMA, return that section. | |
2763 | Else if PC matches an unmapped section's VMA, return that section. | |
2764 | Else if PC matches an unmapped section's LMA, return that section. */ | |
2765 | ||
2766 | asection * | |
2767 | find_pc_overlay (pc) | |
2768 | CORE_ADDR pc; | |
2769 | { | |
c5aa993b | 2770 | struct objfile *objfile; |
c906108c SS |
2771 | struct obj_section *osect, *best_match = NULL; |
2772 | ||
2773 | if (overlay_debugging) | |
2774 | ALL_OBJSECTIONS (objfile, osect) | |
2775 | if (section_is_overlay (osect->the_bfd_section)) | |
c5aa993b JM |
2776 | { |
2777 | if (pc_in_mapped_range (pc, osect->the_bfd_section)) | |
2778 | { | |
2779 | if (overlay_is_mapped (osect)) | |
2780 | return osect->the_bfd_section; | |
2781 | else | |
2782 | best_match = osect; | |
2783 | } | |
2784 | else if (pc_in_unmapped_range (pc, osect->the_bfd_section)) | |
2785 | best_match = osect; | |
2786 | } | |
c906108c SS |
2787 | return best_match ? best_match->the_bfd_section : NULL; |
2788 | } | |
2789 | ||
2790 | /* Function: find_pc_mapped_section (PC) | |
2791 | If PC falls into the VMA address range of an overlay section that is | |
2792 | currently marked as MAPPED, return that section. Else return NULL. */ | |
2793 | ||
2794 | asection * | |
2795 | find_pc_mapped_section (pc) | |
2796 | CORE_ADDR pc; | |
2797 | { | |
c5aa993b | 2798 | struct objfile *objfile; |
c906108c SS |
2799 | struct obj_section *osect; |
2800 | ||
2801 | if (overlay_debugging) | |
2802 | ALL_OBJSECTIONS (objfile, osect) | |
2803 | if (pc_in_mapped_range (pc, osect->the_bfd_section) && | |
2804 | overlay_is_mapped (osect)) | |
c5aa993b | 2805 | return osect->the_bfd_section; |
c906108c SS |
2806 | |
2807 | return NULL; | |
2808 | } | |
2809 | ||
2810 | /* Function: list_overlays_command | |
2811 | Print a list of mapped sections and their PC ranges */ | |
2812 | ||
2813 | void | |
2814 | list_overlays_command (args, from_tty) | |
2815 | char *args; | |
2816 | int from_tty; | |
2817 | { | |
c5aa993b JM |
2818 | int nmapped = 0; |
2819 | struct objfile *objfile; | |
c906108c SS |
2820 | struct obj_section *osect; |
2821 | ||
2822 | if (overlay_debugging) | |
2823 | ALL_OBJSECTIONS (objfile, osect) | |
2824 | if (overlay_is_mapped (osect)) | |
c5aa993b JM |
2825 | { |
2826 | const char *name; | |
2827 | bfd_vma lma, vma; | |
2828 | int size; | |
2829 | ||
2830 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
2831 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
2832 | size = bfd_get_section_size_before_reloc (osect->the_bfd_section); | |
2833 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); | |
2834 | ||
2835 | printf_filtered ("Section %s, loaded at ", name); | |
2836 | print_address_numeric (lma, 1, gdb_stdout); | |
2837 | puts_filtered (" - "); | |
2838 | print_address_numeric (lma + size, 1, gdb_stdout); | |
2839 | printf_filtered (", mapped at "); | |
2840 | print_address_numeric (vma, 1, gdb_stdout); | |
2841 | puts_filtered (" - "); | |
2842 | print_address_numeric (vma + size, 1, gdb_stdout); | |
2843 | puts_filtered ("\n"); | |
2844 | ||
2845 | nmapped++; | |
2846 | } | |
c906108c SS |
2847 | if (nmapped == 0) |
2848 | printf_filtered ("No sections are mapped.\n"); | |
2849 | } | |
2850 | ||
2851 | /* Function: map_overlay_command | |
2852 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
2853 | ||
2854 | void | |
2855 | map_overlay_command (args, from_tty) | |
2856 | char *args; | |
c5aa993b | 2857 | int from_tty; |
c906108c | 2858 | { |
c5aa993b JM |
2859 | struct objfile *objfile, *objfile2; |
2860 | struct obj_section *sec, *sec2; | |
2861 | asection *bfdsec; | |
c906108c SS |
2862 | |
2863 | if (!overlay_debugging) | |
2864 | error ("Overlay debugging not enabled. Use the 'OVERLAY ON' command."); | |
2865 | ||
2866 | if (args == 0 || *args == 0) | |
2867 | error ("Argument required: name of an overlay section"); | |
2868 | ||
2869 | /* First, find a section matching the user supplied argument */ | |
2870 | ALL_OBJSECTIONS (objfile, sec) | |
2871 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
2872 | { |
2873 | /* Now, check to see if the section is an overlay. */ | |
2874 | bfdsec = sec->the_bfd_section; | |
2875 | if (!section_is_overlay (bfdsec)) | |
2876 | continue; /* not an overlay section */ | |
2877 | ||
2878 | /* Mark the overlay as "mapped" */ | |
2879 | sec->ovly_mapped = 1; | |
2880 | ||
2881 | /* Next, make a pass and unmap any sections that are | |
2882 | overlapped by this new section: */ | |
2883 | ALL_OBJSECTIONS (objfile2, sec2) | |
2884 | if (sec2->ovly_mapped && | |
2885 | sec != sec2 && | |
2886 | sec->the_bfd_section != sec2->the_bfd_section && | |
2887 | (pc_in_mapped_range (sec2->addr, sec->the_bfd_section) || | |
2888 | pc_in_mapped_range (sec2->endaddr, sec->the_bfd_section))) | |
2889 | { | |
2890 | if (info_verbose) | |
2891 | printf_filtered ("Note: section %s unmapped by overlap\n", | |
2892 | bfd_section_name (objfile->obfd, | |
2893 | sec2->the_bfd_section)); | |
2894 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2 */ | |
2895 | } | |
2896 | return; | |
2897 | } | |
c906108c SS |
2898 | error ("No overlay section called %s", args); |
2899 | } | |
2900 | ||
2901 | /* Function: unmap_overlay_command | |
2902 | Mark the overlay section as unmapped | |
2903 | (ie. resident in its LMA address range, rather than the VMA range). */ | |
2904 | ||
2905 | void | |
2906 | unmap_overlay_command (args, from_tty) | |
2907 | char *args; | |
c5aa993b | 2908 | int from_tty; |
c906108c | 2909 | { |
c5aa993b | 2910 | struct objfile *objfile; |
c906108c SS |
2911 | struct obj_section *sec; |
2912 | ||
2913 | if (!overlay_debugging) | |
2914 | error ("Overlay debugging not enabled. Use the 'OVERLAY ON' command."); | |
2915 | ||
2916 | if (args == 0 || *args == 0) | |
2917 | error ("Argument required: name of an overlay section"); | |
2918 | ||
2919 | /* First, find a section matching the user supplied argument */ | |
2920 | ALL_OBJSECTIONS (objfile, sec) | |
2921 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
2922 | { |
2923 | if (!sec->ovly_mapped) | |
2924 | error ("Section %s is not mapped", args); | |
2925 | sec->ovly_mapped = 0; | |
2926 | return; | |
2927 | } | |
c906108c SS |
2928 | error ("No overlay section called %s", args); |
2929 | } | |
2930 | ||
2931 | /* Function: overlay_auto_command | |
2932 | A utility command to turn on overlay debugging. | |
2933 | Possibly this should be done via a set/show command. */ | |
2934 | ||
2935 | static void | |
2936 | overlay_auto_command (args, from_tty) | |
2937 | char *args; | |
c5aa993b | 2938 | int from_tty; |
c906108c SS |
2939 | { |
2940 | overlay_debugging = -1; | |
2941 | if (info_verbose) | |
2942 | printf_filtered ("Automatic overlay debugging enabled."); | |
2943 | } | |
2944 | ||
2945 | /* Function: overlay_manual_command | |
2946 | A utility command to turn on overlay debugging. | |
2947 | Possibly this should be done via a set/show command. */ | |
2948 | ||
2949 | static void | |
2950 | overlay_manual_command (args, from_tty) | |
2951 | char *args; | |
c5aa993b | 2952 | int from_tty; |
c906108c SS |
2953 | { |
2954 | overlay_debugging = 1; | |
2955 | if (info_verbose) | |
2956 | printf_filtered ("Overlay debugging enabled."); | |
2957 | } | |
2958 | ||
2959 | /* Function: overlay_off_command | |
2960 | A utility command to turn on overlay debugging. | |
2961 | Possibly this should be done via a set/show command. */ | |
2962 | ||
2963 | static void | |
2964 | overlay_off_command (args, from_tty) | |
2965 | char *args; | |
c5aa993b | 2966 | int from_tty; |
c906108c | 2967 | { |
c5aa993b | 2968 | overlay_debugging = 0; |
c906108c SS |
2969 | if (info_verbose) |
2970 | printf_filtered ("Overlay debugging disabled."); | |
2971 | } | |
2972 | ||
2973 | static void | |
2974 | overlay_load_command (args, from_tty) | |
2975 | char *args; | |
c5aa993b | 2976 | int from_tty; |
c906108c SS |
2977 | { |
2978 | if (target_overlay_update) | |
2979 | (*target_overlay_update) (NULL); | |
2980 | else | |
2981 | error ("This target does not know how to read its overlay state."); | |
2982 | } | |
2983 | ||
2984 | /* Function: overlay_command | |
2985 | A place-holder for a mis-typed command */ | |
2986 | ||
2987 | /* Command list chain containing all defined "overlay" subcommands. */ | |
2988 | struct cmd_list_element *overlaylist; | |
2989 | ||
2990 | static void | |
2991 | overlay_command (args, from_tty) | |
2992 | char *args; | |
2993 | int from_tty; | |
2994 | { | |
c5aa993b | 2995 | printf_unfiltered |
c906108c SS |
2996 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
2997 | help_list (overlaylist, "overlay ", -1, gdb_stdout); | |
2998 | } | |
2999 | ||
3000 | ||
3001 | /* Target Overlays for the "Simplest" overlay manager: | |
3002 | ||
3003 | This is GDB's default target overlay layer. It works with the | |
3004 | minimal overlay manager supplied as an example by Cygnus. The | |
3005 | entry point is via a function pointer "target_overlay_update", | |
3006 | so targets that use a different runtime overlay manager can | |
3007 | substitute their own overlay_update function and take over the | |
3008 | function pointer. | |
3009 | ||
3010 | The overlay_update function pokes around in the target's data structures | |
3011 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3012 | this information. | |
3013 | ||
3014 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3015 | unsigned _novlys; /# number of overlay sections #/ |
3016 | unsigned _ovly_table[_novlys][4] = { | |
3017 | {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/ | |
3018 | {..., ..., ..., ...}, | |
3019 | } | |
3020 | unsigned _novly_regions; /# number of overlay regions #/ | |
3021 | unsigned _ovly_region_table[_novly_regions][3] = { | |
3022 | {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ | |
3023 | {..., ..., ...}, | |
3024 | } | |
c906108c SS |
3025 | These functions will attempt to update GDB's mappedness state in the |
3026 | symbol section table, based on the target's mappedness state. | |
3027 | ||
3028 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3029 | attempt to detect when the cached copy is invalidated. The main | |
3030 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3031 | the cached table and re-reads only the entry for that section from | |
3032 | the target (whenever possible). | |
3033 | */ | |
3034 | ||
3035 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3036 | static unsigned (*cache_ovly_table)[4] = 0; |
c906108c | 3037 | #if 0 |
c5aa993b | 3038 | static unsigned (*cache_ovly_region_table)[3] = 0; |
c906108c | 3039 | #endif |
c5aa993b | 3040 | static unsigned cache_novlys = 0; |
c906108c | 3041 | #if 0 |
c5aa993b | 3042 | static unsigned cache_novly_regions = 0; |
c906108c SS |
3043 | #endif |
3044 | static CORE_ADDR cache_ovly_table_base = 0; | |
3045 | #if 0 | |
3046 | static CORE_ADDR cache_ovly_region_table_base = 0; | |
3047 | #endif | |
c5aa993b JM |
3048 | enum ovly_index |
3049 | { | |
3050 | VMA, SIZE, LMA, MAPPED | |
3051 | }; | |
c906108c SS |
3052 | #define TARGET_LONG_BYTES (TARGET_LONG_BIT / TARGET_CHAR_BIT) |
3053 | ||
3054 | /* Throw away the cached copy of _ovly_table */ | |
3055 | static void | |
3056 | simple_free_overlay_table () | |
3057 | { | |
3058 | if (cache_ovly_table) | |
c5aa993b JM |
3059 | free (cache_ovly_table); |
3060 | cache_novlys = 0; | |
c906108c SS |
3061 | cache_ovly_table = NULL; |
3062 | cache_ovly_table_base = 0; | |
3063 | } | |
3064 | ||
3065 | #if 0 | |
3066 | /* Throw away the cached copy of _ovly_region_table */ | |
3067 | static void | |
3068 | simple_free_overlay_region_table () | |
3069 | { | |
3070 | if (cache_ovly_region_table) | |
c5aa993b JM |
3071 | free (cache_ovly_region_table); |
3072 | cache_novly_regions = 0; | |
c906108c SS |
3073 | cache_ovly_region_table = NULL; |
3074 | cache_ovly_region_table_base = 0; | |
3075 | } | |
3076 | #endif | |
3077 | ||
3078 | /* Read an array of ints from the target into a local buffer. | |
3079 | Convert to host order. int LEN is number of ints */ | |
3080 | static void | |
3081 | read_target_long_array (memaddr, myaddr, len) | |
c5aa993b | 3082 | CORE_ADDR memaddr; |
c906108c | 3083 | unsigned int *myaddr; |
c5aa993b | 3084 | int len; |
c906108c SS |
3085 | { |
3086 | char *buf = alloca (len * TARGET_LONG_BYTES); | |
c5aa993b | 3087 | int i; |
c906108c SS |
3088 | |
3089 | read_memory (memaddr, buf, len * TARGET_LONG_BYTES); | |
3090 | for (i = 0; i < len; i++) | |
c5aa993b | 3091 | myaddr[i] = extract_unsigned_integer (TARGET_LONG_BYTES * i + buf, |
c906108c SS |
3092 | TARGET_LONG_BYTES); |
3093 | } | |
3094 | ||
3095 | /* Find and grab a copy of the target _ovly_table | |
3096 | (and _novlys, which is needed for the table's size) */ | |
c5aa993b | 3097 | static int |
c906108c SS |
3098 | simple_read_overlay_table () |
3099 | { | |
3100 | struct minimal_symbol *msym; | |
3101 | ||
3102 | simple_free_overlay_table (); | |
3103 | msym = lookup_minimal_symbol ("_novlys", 0, 0); | |
3104 | if (msym != NULL) | |
3105 | cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (msym), 4); | |
c5aa993b JM |
3106 | else |
3107 | return 0; /* failure */ | |
3108 | cache_ovly_table = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); | |
c906108c SS |
3109 | if (cache_ovly_table != NULL) |
3110 | { | |
3111 | msym = lookup_minimal_symbol ("_ovly_table", 0, 0); | |
3112 | if (msym != NULL) | |
3113 | { | |
3114 | cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (msym); | |
c5aa993b JM |
3115 | read_target_long_array (cache_ovly_table_base, |
3116 | (int *) cache_ovly_table, | |
c906108c SS |
3117 | cache_novlys * 4); |
3118 | } | |
c5aa993b JM |
3119 | else |
3120 | return 0; /* failure */ | |
c906108c | 3121 | } |
c5aa993b JM |
3122 | else |
3123 | return 0; /* failure */ | |
3124 | return 1; /* SUCCESS */ | |
c906108c SS |
3125 | } |
3126 | ||
3127 | #if 0 | |
3128 | /* Find and grab a copy of the target _ovly_region_table | |
3129 | (and _novly_regions, which is needed for the table's size) */ | |
c5aa993b | 3130 | static int |
c906108c SS |
3131 | simple_read_overlay_region_table () |
3132 | { | |
3133 | struct minimal_symbol *msym; | |
3134 | ||
3135 | simple_free_overlay_region_table (); | |
3136 | msym = lookup_minimal_symbol ("_novly_regions", 0, 0); | |
3137 | if (msym != NULL) | |
3138 | cache_novly_regions = read_memory_integer (SYMBOL_VALUE_ADDRESS (msym), 4); | |
c5aa993b JM |
3139 | else |
3140 | return 0; /* failure */ | |
c906108c SS |
3141 | cache_ovly_region_table = (void *) xmalloc (cache_novly_regions * 12); |
3142 | if (cache_ovly_region_table != NULL) | |
3143 | { | |
3144 | msym = lookup_minimal_symbol ("_ovly_region_table", 0, 0); | |
3145 | if (msym != NULL) | |
3146 | { | |
3147 | cache_ovly_region_table_base = SYMBOL_VALUE_ADDRESS (msym); | |
c5aa993b JM |
3148 | read_target_long_array (cache_ovly_region_table_base, |
3149 | (int *) cache_ovly_region_table, | |
c906108c SS |
3150 | cache_novly_regions * 3); |
3151 | } | |
c5aa993b JM |
3152 | else |
3153 | return 0; /* failure */ | |
c906108c | 3154 | } |
c5aa993b JM |
3155 | else |
3156 | return 0; /* failure */ | |
3157 | return 1; /* SUCCESS */ | |
c906108c SS |
3158 | } |
3159 | #endif | |
3160 | ||
3161 | /* Function: simple_overlay_update_1 | |
3162 | A helper function for simple_overlay_update. Assuming a cached copy | |
3163 | of _ovly_table exists, look through it to find an entry whose vma, | |
3164 | lma and size match those of OSECT. Re-read the entry and make sure | |
3165 | it still matches OSECT (else the table may no longer be valid). | |
3166 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3167 | success, 0 for failure. */ | |
3168 | ||
3169 | static int | |
3170 | simple_overlay_update_1 (osect) | |
3171 | struct obj_section *osect; | |
3172 | { | |
3173 | int i, size; | |
3174 | ||
3175 | size = bfd_get_section_size_before_reloc (osect->the_bfd_section); | |
3176 | for (i = 0; i < cache_novlys; i++) | |
c5aa993b JM |
3177 | if (cache_ovly_table[i][VMA] == osect->the_bfd_section->vma && |
3178 | cache_ovly_table[i][LMA] == osect->the_bfd_section->lma /* && | |
3179 | cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3180 | { |
3181 | read_target_long_array (cache_ovly_table_base + i * TARGET_LONG_BYTES, | |
3182 | (int *) cache_ovly_table[i], 4); | |
c5aa993b JM |
3183 | if (cache_ovly_table[i][VMA] == osect->the_bfd_section->vma && |
3184 | cache_ovly_table[i][LMA] == osect->the_bfd_section->lma /* && | |
3185 | cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3186 | { |
3187 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3188 | return 1; | |
3189 | } | |
c5aa993b | 3190 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3191 | return 0; |
3192 | } | |
3193 | return 0; | |
3194 | } | |
3195 | ||
3196 | /* Function: simple_overlay_update | |
3197 | If OSECT is NULL, then update all sections' mapped state | |
3198 | (after re-reading the entire target _ovly_table). | |
3199 | If OSECT is non-NULL, then try to find a matching entry in the | |
3200 | cached ovly_table and update only OSECT's mapped state. | |
3201 | If a cached entry can't be found or the cache isn't valid, then | |
3202 | re-read the entire cache, and go ahead and update all sections. */ | |
3203 | ||
3204 | static void | |
3205 | simple_overlay_update (osect) | |
3206 | struct obj_section *osect; | |
3207 | { | |
c5aa993b | 3208 | struct objfile *objfile; |
c906108c SS |
3209 | |
3210 | /* Were we given an osect to look up? NULL means do all of them. */ | |
3211 | if (osect) | |
3212 | /* Have we got a cached copy of the target's overlay table? */ | |
3213 | if (cache_ovly_table != NULL) | |
3214 | /* Does its cached location match what's currently in the symtab? */ | |
c5aa993b | 3215 | if (cache_ovly_table_base == |
c906108c SS |
3216 | SYMBOL_VALUE_ADDRESS (lookup_minimal_symbol ("_ovly_table", 0, 0))) |
3217 | /* Then go ahead and try to look up this single section in the cache */ | |
3218 | if (simple_overlay_update_1 (osect)) | |
3219 | /* Found it! We're done. */ | |
3220 | return; | |
3221 | ||
3222 | /* Cached table no good: need to read the entire table anew. | |
3223 | Or else we want all the sections, in which case it's actually | |
3224 | more efficient to read the whole table in one block anyway. */ | |
3225 | ||
3226 | if (simple_read_overlay_table () == 0) /* read failed? No table? */ | |
3227 | { | |
3228 | warning ("Failed to read the target overlay mapping table."); | |
3229 | return; | |
3230 | } | |
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; | |
3236 | ||
3237 | size = bfd_get_section_size_before_reloc (osect->the_bfd_section); | |
3238 | for (i = 0; i < cache_novlys; i++) | |
3239 | if (cache_ovly_table[i][VMA] == osect->the_bfd_section->vma && | |
3240 | cache_ovly_table[i][LMA] == osect->the_bfd_section->lma /* && | |
3241 | cache_ovly_table[i][SIZE] == size */ ) | |
3242 | { /* obj_section matches i'th entry in ovly_table */ | |
3243 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3244 | break; /* finished with inner for loop: break out */ | |
3245 | } | |
3246 | } | |
c906108c SS |
3247 | } |
3248 | ||
3249 | ||
3250 | void | |
3251 | _initialize_symfile () | |
3252 | { | |
3253 | struct cmd_list_element *c; | |
c5aa993b | 3254 | |
c906108c | 3255 | c = add_cmd ("symbol-file", class_files, symbol_file_command, |
c5aa993b | 3256 | "Load symbol table from executable file FILE.\n\ |
c906108c SS |
3257 | The `file' command can also load symbol tables, as well as setting the file\n\ |
3258 | to execute.", &cmdlist); | |
3259 | c->completer = filename_completer; | |
3260 | ||
3261 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, | |
2acceee2 JM |
3262 | "Usage: add-symbol-file FILE ADDR [DATA_ADDR [BSS_ADDR]]\n\ |
3263 | or: add-symbol-file FILE -T<SECT> <SECT_ADDR> -T<SECT> <SECT_ADDR> ...\n\ | |
c906108c | 3264 | Load the symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
2acceee2 JM |
3265 | ADDR is the starting address of the file's text.\n\ |
3266 | The optional arguments, DATA_ADDR and BSS_ADDR, should be specified\n\ | |
3267 | if the data and bss segments are not contiguous with the text.\n\ | |
3268 | For complicated cases, SECT is a section name to be loaded at SECT_ADDR.", | |
c906108c SS |
3269 | &cmdlist); |
3270 | c->completer = filename_completer; | |
3271 | ||
3272 | c = add_cmd ("add-shared-symbol-files", class_files, | |
3273 | add_shared_symbol_files_command, | |
3274 | "Load the symbols from shared objects in the dynamic linker's link map.", | |
c5aa993b | 3275 | &cmdlist); |
c906108c SS |
3276 | c = add_alias_cmd ("assf", "add-shared-symbol-files", class_files, 1, |
3277 | &cmdlist); | |
3278 | ||
3279 | c = add_cmd ("load", class_files, load_command, | |
c5aa993b | 3280 | "Dynamically load FILE into the running program, and record its symbols\n\ |
c906108c SS |
3281 | for access from GDB.", &cmdlist); |
3282 | c->completer = filename_completer; | |
3283 | ||
3284 | add_show_from_set | |
3285 | (add_set_cmd ("symbol-reloading", class_support, var_boolean, | |
c5aa993b JM |
3286 | (char *) &symbol_reloading, |
3287 | "Set dynamic symbol table reloading multiple times in one run.", | |
c906108c SS |
3288 | &setlist), |
3289 | &showlist); | |
3290 | ||
c5aa993b JM |
3291 | add_prefix_cmd ("overlay", class_support, overlay_command, |
3292 | "Commands for debugging overlays.", &overlaylist, | |
c906108c SS |
3293 | "overlay ", 0, &cmdlist); |
3294 | ||
3295 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3296 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3297 | ||
c5aa993b | 3298 | add_cmd ("map-overlay", class_support, map_overlay_command, |
c906108c SS |
3299 | "Assert that an overlay section is mapped.", &overlaylist); |
3300 | ||
c5aa993b | 3301 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
c906108c SS |
3302 | "Assert that an overlay section is unmapped.", &overlaylist); |
3303 | ||
c5aa993b | 3304 | add_cmd ("list-overlays", class_support, list_overlays_command, |
c906108c SS |
3305 | "List mappings of overlay sections.", &overlaylist); |
3306 | ||
c5aa993b | 3307 | add_cmd ("manual", class_support, overlay_manual_command, |
c906108c | 3308 | "Enable overlay debugging.", &overlaylist); |
c5aa993b | 3309 | add_cmd ("off", class_support, overlay_off_command, |
c906108c | 3310 | "Disable overlay debugging.", &overlaylist); |
c5aa993b | 3311 | add_cmd ("auto", class_support, overlay_auto_command, |
c906108c | 3312 | "Enable automatic overlay debugging.", &overlaylist); |
c5aa993b | 3313 | add_cmd ("load-target", class_support, overlay_load_command, |
c906108c SS |
3314 | "Read the overlay mapping state from the target.", &overlaylist); |
3315 | ||
3316 | /* Filename extension to source language lookup table: */ | |
3317 | init_filename_language_table (); | |
3318 | c = add_set_cmd ("extension-language", class_files, var_string_noescape, | |
c5aa993b | 3319 | (char *) &ext_args, |
c906108c SS |
3320 | "Set mapping between filename extension and source language.\n\ |
3321 | Usage: set extension-language .foo bar", | |
c5aa993b | 3322 | &setlist); |
c906108c SS |
3323 | c->function.cfunc = set_ext_lang_command; |
3324 | ||
c5aa993b | 3325 | add_info ("extensions", info_ext_lang_command, |
c906108c | 3326 | "All filename extensions associated with a source language."); |
917317f4 JM |
3327 | |
3328 | add_show_from_set | |
3329 | (add_set_cmd ("download-write-size", class_obscure, | |
3330 | var_integer, (char *) &download_write_size, | |
3331 | "Set the write size used when downloading a program.\n" | |
3332 | "Only used when downloading a program onto a remote\n" | |
3333 | "target. Specify zero, or a negative value, to disable\n" | |
3334 | "blocked writes. The actual size of each transfer is also\n" | |
3335 | "limited by the size of the target packet and the memory\n" | |
3336 | "cache.\n", | |
3337 | &setlist), | |
3338 | &showlist); | |
c906108c | 3339 | } |