Commit | Line | Data |
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c906108c | 1 | /* Generic symbol file reading for the GNU debugger, GDB. |
d9fcf2fb | 2 | Copyright 1990-1996, 1998, 2000 Free Software Foundation, Inc. |
c906108c SS |
3 | Contributed by Cygnus Support, using pieces from other GDB modules. |
4 | ||
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b JM |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
21 | |
22 | #include "defs.h" | |
23 | #include "symtab.h" | |
24 | #include "gdbtypes.h" | |
25 | #include "gdbcore.h" | |
26 | #include "frame.h" | |
27 | #include "target.h" | |
28 | #include "value.h" | |
29 | #include "symfile.h" | |
30 | #include "objfiles.h" | |
31 | #include "gdbcmd.h" | |
32 | #include "breakpoint.h" | |
33 | #include "language.h" | |
34 | #include "complaints.h" | |
35 | #include "demangle.h" | |
c5aa993b | 36 | #include "inferior.h" /* for write_pc */ |
c906108c SS |
37 | #include "gdb-stabs.h" |
38 | #include "obstack.h" | |
39 | ||
40 | #include <assert.h> | |
41 | #include <sys/types.h> | |
42 | #include <fcntl.h> | |
43 | #include "gdb_string.h" | |
44 | #include "gdb_stat.h" | |
45 | #include <ctype.h> | |
46 | #include <time.h> | |
c906108c SS |
47 | |
48 | #ifndef O_BINARY | |
49 | #define O_BINARY 0 | |
50 | #endif | |
51 | ||
52 | #ifdef HPUXHPPA | |
53 | ||
54 | /* Some HP-UX related globals to clear when a new "main" | |
55 | symbol file is loaded. HP-specific. */ | |
56 | ||
57 | extern int hp_som_som_object_present; | |
58 | extern int hp_cxx_exception_support_initialized; | |
59 | #define RESET_HP_UX_GLOBALS() do {\ | |
60 | hp_som_som_object_present = 0; /* indicates HP-compiled code */ \ | |
61 | hp_cxx_exception_support_initialized = 0; /* must reinitialize exception stuff */ \ | |
62 | } while (0) | |
63 | #endif | |
64 | ||
917317f4 | 65 | int (*ui_load_progress_hook) (const char *section, unsigned long num); |
c2d11a7d JM |
66 | void (*show_load_progress) (const char *section, |
67 | unsigned long section_sent, | |
68 | unsigned long section_size, | |
69 | unsigned long total_sent, | |
70 | unsigned long total_size); | |
c906108c SS |
71 | void (*pre_add_symbol_hook) PARAMS ((char *)); |
72 | void (*post_add_symbol_hook) PARAMS ((void)); | |
11cf8741 | 73 | void (*target_new_objfile_hook) PARAMS ((struct objfile *)); |
c906108c SS |
74 | |
75 | /* Global variables owned by this file */ | |
c5aa993b | 76 | int readnow_symbol_files; /* Read full symbols immediately */ |
c906108c | 77 | |
c5aa993b JM |
78 | struct complaint oldsyms_complaint = |
79 | { | |
c906108c SS |
80 | "Replacing old symbols for `%s'", 0, 0 |
81 | }; | |
82 | ||
c5aa993b JM |
83 | struct complaint empty_symtab_complaint = |
84 | { | |
c906108c SS |
85 | "Empty symbol table found for `%s'", 0, 0 |
86 | }; | |
87 | ||
2acceee2 JM |
88 | struct complaint unknown_option_complaint = |
89 | { | |
90 | "Unknown option `%s' ignored", 0, 0 | |
91 | }; | |
92 | ||
c906108c SS |
93 | /* External variables and functions referenced. */ |
94 | ||
95 | extern int info_verbose; | |
96 | ||
97 | extern void report_transfer_performance PARAMS ((unsigned long, | |
98 | time_t, time_t)); | |
99 | ||
100 | /* Functions this file defines */ | |
101 | ||
102 | #if 0 | |
103 | static int simple_read_overlay_region_table PARAMS ((void)); | |
104 | static void simple_free_overlay_region_table PARAMS ((void)); | |
105 | #endif | |
106 | ||
107 | static void set_initial_language PARAMS ((void)); | |
108 | ||
109 | static void load_command PARAMS ((char *, int)); | |
110 | ||
111 | static void add_symbol_file_command PARAMS ((char *, int)); | |
112 | ||
113 | static void add_shared_symbol_files_command PARAMS ((char *, int)); | |
114 | ||
115 | static void cashier_psymtab PARAMS ((struct partial_symtab *)); | |
116 | ||
117 | static int compare_psymbols PARAMS ((const void *, const void *)); | |
118 | ||
119 | static int compare_symbols PARAMS ((const void *, const void *)); | |
120 | ||
121 | bfd *symfile_bfd_open PARAMS ((char *)); | |
122 | ||
123 | static void find_sym_fns PARAMS ((struct objfile *)); | |
124 | ||
125 | static void decrement_reading_symtab PARAMS ((void *)); | |
126 | ||
127 | static void overlay_invalidate_all PARAMS ((void)); | |
128 | ||
129 | static int overlay_is_mapped PARAMS ((struct obj_section *)); | |
130 | ||
131 | void list_overlays_command PARAMS ((char *, int)); | |
132 | ||
133 | void map_overlay_command PARAMS ((char *, int)); | |
134 | ||
135 | void unmap_overlay_command PARAMS ((char *, int)); | |
136 | ||
137 | static void overlay_auto_command PARAMS ((char *, int)); | |
138 | ||
139 | static void overlay_manual_command PARAMS ((char *, int)); | |
140 | ||
141 | static void overlay_off_command PARAMS ((char *, int)); | |
142 | ||
143 | static void overlay_load_command PARAMS ((char *, int)); | |
144 | ||
145 | static void overlay_command PARAMS ((char *, int)); | |
146 | ||
147 | static void simple_free_overlay_table PARAMS ((void)); | |
148 | ||
149 | static void read_target_long_array PARAMS ((CORE_ADDR, unsigned int *, int)); | |
150 | ||
151 | static int simple_read_overlay_table PARAMS ((void)); | |
152 | ||
153 | static int simple_overlay_update_1 PARAMS ((struct obj_section *)); | |
154 | ||
392a587b JM |
155 | static void add_filename_language PARAMS ((char *ext, enum language lang)); |
156 | ||
157 | static void set_ext_lang_command PARAMS ((char *args, int from_tty)); | |
158 | ||
159 | static void info_ext_lang_command PARAMS ((char *args, int from_tty)); | |
160 | ||
161 | static void init_filename_language_table PARAMS ((void)); | |
162 | ||
c906108c SS |
163 | void _initialize_symfile PARAMS ((void)); |
164 | ||
165 | /* List of all available sym_fns. On gdb startup, each object file reader | |
166 | calls add_symtab_fns() to register information on each format it is | |
167 | prepared to read. */ | |
168 | ||
169 | static struct sym_fns *symtab_fns = NULL; | |
170 | ||
171 | /* Flag for whether user will be reloading symbols multiple times. | |
172 | Defaults to ON for VxWorks, otherwise OFF. */ | |
173 | ||
174 | #ifdef SYMBOL_RELOADING_DEFAULT | |
175 | int symbol_reloading = SYMBOL_RELOADING_DEFAULT; | |
176 | #else | |
177 | int symbol_reloading = 0; | |
178 | #endif | |
179 | ||
180 | /* If non-zero, then on HP-UX (i.e., platforms that use somsolib.c), | |
181 | this variable is interpreted as a threshhold. If adding a new | |
182 | library's symbol table to those already known to the debugger would | |
183 | exceed this threshhold, then the shlib's symbols are not added. | |
184 | ||
185 | If non-zero on other platforms, shared library symbols will be added | |
186 | automatically when the inferior is created, new libraries are loaded, | |
187 | or when attaching to the inferior. This is almost always what users | |
188 | will want to have happen; but for very large programs, the startup | |
189 | time will be excessive, and so if this is a problem, the user can | |
190 | clear this flag and then add the shared library symbols as needed. | |
191 | Note that there is a potential for confusion, since if the shared | |
192 | library symbols are not loaded, commands like "info fun" will *not* | |
193 | report all the functions that are actually present. | |
194 | ||
195 | Note that HP-UX interprets this variable to mean, "threshhold size | |
196 | in megabytes, where zero means never add". Other platforms interpret | |
197 | this variable to mean, "always add if non-zero, never add if zero." | |
c5aa993b | 198 | */ |
c906108c SS |
199 | |
200 | int auto_solib_add = 1; | |
c906108c | 201 | \f |
c5aa993b | 202 | |
c906108c SS |
203 | /* Since this function is called from within qsort, in an ANSI environment |
204 | it must conform to the prototype for qsort, which specifies that the | |
205 | comparison function takes two "void *" pointers. */ | |
206 | ||
207 | static int | |
208 | compare_symbols (s1p, s2p) | |
209 | const PTR s1p; | |
210 | const PTR s2p; | |
211 | { | |
212 | register struct symbol **s1, **s2; | |
213 | ||
214 | s1 = (struct symbol **) s1p; | |
215 | s2 = (struct symbol **) s2p; | |
216 | ||
217 | return (STRCMP (SYMBOL_NAME (*s1), SYMBOL_NAME (*s2))); | |
218 | } | |
219 | ||
220 | /* | |
221 | ||
c5aa993b | 222 | LOCAL FUNCTION |
c906108c | 223 | |
c5aa993b | 224 | compare_psymbols -- compare two partial symbols by name |
c906108c | 225 | |
c5aa993b | 226 | DESCRIPTION |
c906108c | 227 | |
c5aa993b JM |
228 | Given pointers to pointers to two partial symbol table entries, |
229 | compare them by name and return -N, 0, or +N (ala strcmp). | |
230 | Typically used by sorting routines like qsort(). | |
c906108c | 231 | |
c5aa993b | 232 | NOTES |
c906108c | 233 | |
c5aa993b JM |
234 | Does direct compare of first two characters before punting |
235 | and passing to strcmp for longer compares. Note that the | |
236 | original version had a bug whereby two null strings or two | |
237 | identically named one character strings would return the | |
238 | comparison of memory following the null byte. | |
c906108c SS |
239 | |
240 | */ | |
241 | ||
242 | static int | |
243 | compare_psymbols (s1p, s2p) | |
244 | const PTR s1p; | |
245 | const PTR s2p; | |
246 | { | |
247 | register char *st1 = SYMBOL_NAME (*(struct partial_symbol **) s1p); | |
248 | register char *st2 = SYMBOL_NAME (*(struct partial_symbol **) s2p); | |
249 | ||
250 | if ((st1[0] - st2[0]) || !st1[0]) | |
251 | { | |
252 | return (st1[0] - st2[0]); | |
253 | } | |
254 | else if ((st1[1] - st2[1]) || !st1[1]) | |
255 | { | |
256 | return (st1[1] - st2[1]); | |
257 | } | |
258 | else | |
259 | { | |
260 | /* Note: I replaced the STRCMP line (commented out below) | |
261 | * with a simpler "strcmp()" which compares the 2 strings | |
262 | * from the beginning. (STRCMP is a macro which first compares | |
263 | * the initial characters, then falls back on strcmp). | |
264 | * The reason is that the STRCMP line was tickling a C compiler | |
265 | * bug on HP-UX 10.30, which is avoided with the simpler | |
266 | * code. The performance gain from the more complicated code | |
267 | * is negligible, given that we have already checked the | |
268 | * initial 2 characters above. I reported the compiler bug, | |
269 | * and once it is fixed the original line can be put back. RT | |
270 | */ | |
271 | /* return ( STRCMP (st1 + 2, st2 + 2)); */ | |
c5aa993b | 272 | return (strcmp (st1, st2)); |
c906108c SS |
273 | } |
274 | } | |
275 | ||
276 | void | |
277 | sort_pst_symbols (pst) | |
278 | struct partial_symtab *pst; | |
279 | { | |
280 | /* Sort the global list; don't sort the static list */ | |
281 | ||
c5aa993b JM |
282 | qsort (pst->objfile->global_psymbols.list + pst->globals_offset, |
283 | pst->n_global_syms, sizeof (struct partial_symbol *), | |
c906108c SS |
284 | compare_psymbols); |
285 | } | |
286 | ||
287 | /* Call sort_block_syms to sort alphabetically the symbols of one block. */ | |
288 | ||
289 | void | |
290 | sort_block_syms (b) | |
291 | register struct block *b; | |
292 | { | |
293 | qsort (&BLOCK_SYM (b, 0), BLOCK_NSYMS (b), | |
294 | sizeof (struct symbol *), compare_symbols); | |
295 | } | |
296 | ||
297 | /* Call sort_symtab_syms to sort alphabetically | |
298 | the symbols of each block of one symtab. */ | |
299 | ||
300 | void | |
301 | sort_symtab_syms (s) | |
302 | register struct symtab *s; | |
303 | { | |
304 | register struct blockvector *bv; | |
305 | int nbl; | |
306 | int i; | |
307 | register struct block *b; | |
308 | ||
309 | if (s == 0) | |
310 | return; | |
311 | bv = BLOCKVECTOR (s); | |
312 | nbl = BLOCKVECTOR_NBLOCKS (bv); | |
313 | for (i = 0; i < nbl; i++) | |
314 | { | |
315 | b = BLOCKVECTOR_BLOCK (bv, i); | |
316 | if (BLOCK_SHOULD_SORT (b)) | |
317 | sort_block_syms (b); | |
318 | } | |
319 | } | |
320 | ||
321 | /* Make a null terminated copy of the string at PTR with SIZE characters in | |
322 | the obstack pointed to by OBSTACKP . Returns the address of the copy. | |
323 | Note that the string at PTR does not have to be null terminated, I.E. it | |
324 | may be part of a larger string and we are only saving a substring. */ | |
325 | ||
326 | char * | |
327 | obsavestring (ptr, size, obstackp) | |
328 | char *ptr; | |
329 | int size; | |
330 | struct obstack *obstackp; | |
331 | { | |
332 | register char *p = (char *) obstack_alloc (obstackp, size + 1); | |
333 | /* Open-coded memcpy--saves function call time. These strings are usually | |
334 | short. FIXME: Is this really still true with a compiler that can | |
335 | inline memcpy? */ | |
336 | { | |
337 | register char *p1 = ptr; | |
338 | register char *p2 = p; | |
339 | char *end = ptr + size; | |
340 | while (p1 != end) | |
341 | *p2++ = *p1++; | |
342 | } | |
343 | p[size] = 0; | |
344 | return p; | |
345 | } | |
346 | ||
347 | /* Concatenate strings S1, S2 and S3; return the new string. Space is found | |
348 | in the obstack pointed to by OBSTACKP. */ | |
349 | ||
350 | char * | |
351 | obconcat (obstackp, s1, s2, s3) | |
352 | struct obstack *obstackp; | |
353 | const char *s1, *s2, *s3; | |
354 | { | |
355 | register int len = strlen (s1) + strlen (s2) + strlen (s3) + 1; | |
356 | register char *val = (char *) obstack_alloc (obstackp, len); | |
357 | strcpy (val, s1); | |
358 | strcat (val, s2); | |
359 | strcat (val, s3); | |
360 | return val; | |
361 | } | |
362 | ||
363 | /* True if we are nested inside psymtab_to_symtab. */ | |
364 | ||
365 | int currently_reading_symtab = 0; | |
366 | ||
367 | static void | |
368 | decrement_reading_symtab (dummy) | |
369 | void *dummy; | |
370 | { | |
371 | currently_reading_symtab--; | |
372 | } | |
373 | ||
374 | /* Get the symbol table that corresponds to a partial_symtab. | |
375 | This is fast after the first time you do it. In fact, there | |
376 | is an even faster macro PSYMTAB_TO_SYMTAB that does the fast | |
377 | case inline. */ | |
378 | ||
379 | struct symtab * | |
380 | psymtab_to_symtab (pst) | |
381 | register struct partial_symtab *pst; | |
382 | { | |
383 | /* If it's been looked up before, return it. */ | |
384 | if (pst->symtab) | |
385 | return pst->symtab; | |
386 | ||
387 | /* If it has not yet been read in, read it. */ | |
388 | if (!pst->readin) | |
c5aa993b | 389 | { |
c906108c SS |
390 | struct cleanup *back_to = make_cleanup (decrement_reading_symtab, NULL); |
391 | currently_reading_symtab++; | |
392 | (*pst->read_symtab) (pst); | |
393 | do_cleanups (back_to); | |
394 | } | |
395 | ||
396 | return pst->symtab; | |
397 | } | |
398 | ||
399 | /* Initialize entry point information for this objfile. */ | |
400 | ||
401 | void | |
402 | init_entry_point_info (objfile) | |
403 | struct objfile *objfile; | |
404 | { | |
405 | /* Save startup file's range of PC addresses to help blockframe.c | |
406 | decide where the bottom of the stack is. */ | |
407 | ||
c5aa993b | 408 | if (bfd_get_file_flags (objfile->obfd) & EXEC_P) |
c906108c SS |
409 | { |
410 | /* Executable file -- record its entry point so we'll recognize | |
c5aa993b JM |
411 | the startup file because it contains the entry point. */ |
412 | objfile->ei.entry_point = bfd_get_start_address (objfile->obfd); | |
c906108c SS |
413 | } |
414 | else | |
415 | { | |
416 | /* Examination of non-executable.o files. Short-circuit this stuff. */ | |
c5aa993b | 417 | objfile->ei.entry_point = INVALID_ENTRY_POINT; |
c906108c | 418 | } |
c5aa993b JM |
419 | objfile->ei.entry_file_lowpc = INVALID_ENTRY_LOWPC; |
420 | objfile->ei.entry_file_highpc = INVALID_ENTRY_HIGHPC; | |
421 | objfile->ei.entry_func_lowpc = INVALID_ENTRY_LOWPC; | |
422 | objfile->ei.entry_func_highpc = INVALID_ENTRY_HIGHPC; | |
423 | objfile->ei.main_func_lowpc = INVALID_ENTRY_LOWPC; | |
424 | objfile->ei.main_func_highpc = INVALID_ENTRY_HIGHPC; | |
c906108c SS |
425 | } |
426 | ||
427 | /* Get current entry point address. */ | |
428 | ||
429 | CORE_ADDR | |
c5aa993b | 430 | entry_point_address () |
c906108c SS |
431 | { |
432 | return symfile_objfile ? symfile_objfile->ei.entry_point : 0; | |
433 | } | |
434 | ||
435 | /* Remember the lowest-addressed loadable section we've seen. | |
436 | This function is called via bfd_map_over_sections. | |
437 | ||
438 | In case of equal vmas, the section with the largest size becomes the | |
439 | lowest-addressed loadable section. | |
440 | ||
441 | If the vmas and sizes are equal, the last section is considered the | |
442 | lowest-addressed loadable section. */ | |
443 | ||
444 | void | |
445 | find_lowest_section (abfd, sect, obj) | |
446 | bfd *abfd; | |
447 | asection *sect; | |
448 | PTR obj; | |
449 | { | |
c5aa993b | 450 | asection **lowest = (asection **) obj; |
c906108c SS |
451 | |
452 | if (0 == (bfd_get_section_flags (abfd, sect) & SEC_LOAD)) | |
453 | return; | |
454 | if (!*lowest) | |
455 | *lowest = sect; /* First loadable section */ | |
456 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
457 | *lowest = sect; /* A lower loadable section */ | |
458 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
459 | && (bfd_section_size (abfd, (*lowest)) | |
460 | <= bfd_section_size (abfd, sect))) | |
461 | *lowest = sect; | |
462 | } | |
463 | ||
464 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
465 | of how to represent it for fast symbol reading. This is the default | |
466 | version of the sym_fns.sym_offsets function for symbol readers that | |
467 | don't need to do anything special. It allocates a section_offsets table | |
468 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
469 | ||
d4f3574e | 470 | void |
2acceee2 | 471 | default_symfile_offsets (objfile, addrs) |
c906108c | 472 | struct objfile *objfile; |
2acceee2 | 473 | struct section_addr_info *addrs; |
c906108c | 474 | { |
c906108c SS |
475 | int i; |
476 | ||
477 | objfile->num_sections = SECT_OFF_MAX; | |
d4f3574e | 478 | objfile->section_offsets = (struct section_offsets *) |
c5aa993b | 479 | obstack_alloc (&objfile->psymbol_obstack, SIZEOF_SECTION_OFFSETS); |
d4f3574e | 480 | memset (objfile->section_offsets, 0, SIZEOF_SECTION_OFFSETS); |
c906108c | 481 | |
2acceee2 JM |
482 | /* If user explicitly specified values for data and bss, set them here. */ |
483 | ||
484 | if (addrs->text_addr) | |
485 | ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT) = addrs->text_addr; | |
486 | if (addrs->data_addr) | |
487 | ANOFFSET (objfile->section_offsets, SECT_OFF_DATA) = addrs->data_addr; | |
488 | if (addrs->bss_addr) | |
489 | ANOFFSET (objfile->section_offsets, SECT_OFF_BSS) = addrs->bss_addr; | |
490 | ||
491 | /* Now calculate offsets for other sections. */ | |
492 | for (i = 0; i < MAX_SECTIONS && addrs->other[i].name; i++) | |
493 | { | |
494 | struct other_sections *osp ; | |
495 | ||
496 | osp = &addrs->other[i] ; | |
497 | if (addrs->other[i].addr == 0) | |
498 | continue; | |
499 | #if 0 | |
500 | if (strcmp (".text", osp->name) == 0) | |
501 | SECT_OFF_TEXT = osp->sectindex ; | |
502 | else if (strcmp (".data", osp->name) == 0) | |
503 | SECT_OFF_DATA = osp->sectindex ; | |
504 | else if (strcmp (".bss", osp->name) == 0) | |
505 | SECT_OFF_BSS = osp->sectindex ; | |
506 | #endif | |
507 | /* Record all sections in offsets */ | |
508 | ANOFFSET (objfile->section_offsets, osp->sectindex) = osp->addr; | |
509 | } | |
c906108c SS |
510 | } |
511 | ||
512 | ||
513 | /* Process a symbol file, as either the main file or as a dynamically | |
514 | loaded file. | |
515 | ||
96baa820 JM |
516 | OBJFILE is where the symbols are to be read from. |
517 | ||
518 | ADDR is the address where the text segment was loaded, unless the | |
519 | objfile is the main symbol file, in which case it is zero. | |
520 | ||
521 | MAINLINE is nonzero if this is the main symbol file, or zero if | |
522 | it's an extra symbol file such as dynamically loaded code. | |
523 | ||
524 | VERBO is nonzero if the caller has printed a verbose message about | |
525 | the symbol reading (and complaints can be more terse about it). */ | |
c906108c SS |
526 | |
527 | void | |
2acceee2 | 528 | syms_from_objfile (objfile, addrs, mainline, verbo) |
c906108c | 529 | struct objfile *objfile; |
2acceee2 | 530 | struct section_addr_info *addrs; |
c906108c SS |
531 | int mainline; |
532 | int verbo; | |
533 | { | |
534 | struct section_offsets *section_offsets; | |
2acceee2 JM |
535 | asection *lower_sect; |
536 | asection *sect; | |
537 | CORE_ADDR lower_offset; | |
538 | struct section_addr_info local_addr; | |
c906108c | 539 | struct cleanup *old_chain; |
2acceee2 JM |
540 | int i; |
541 | ||
542 | /* If ADDRS is NULL, initialize the local section_addr_info struct and | |
543 | point ADDRS to it. We now establish the convention that an addr of | |
544 | zero means no load address was specified. */ | |
545 | ||
546 | if (addrs == NULL) | |
547 | { | |
548 | memset (&local_addr, 0, sizeof (local_addr)); | |
549 | addrs = &local_addr; | |
550 | } | |
c906108c SS |
551 | |
552 | init_entry_point_info (objfile); | |
553 | find_sym_fns (objfile); | |
554 | ||
555 | /* Make sure that partially constructed symbol tables will be cleaned up | |
556 | if an error occurs during symbol reading. */ | |
557 | old_chain = make_cleanup ((make_cleanup_func) free_objfile, objfile); | |
558 | ||
c5aa993b | 559 | if (mainline) |
c906108c SS |
560 | { |
561 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 562 | will be cleaned up if an error occurs during symbol reading. */ |
c906108c SS |
563 | make_cleanup ((make_cleanup_func) clear_symtab_users, 0); |
564 | ||
565 | /* Since no error yet, throw away the old symbol table. */ | |
566 | ||
567 | if (symfile_objfile != NULL) | |
568 | { | |
569 | free_objfile (symfile_objfile); | |
570 | symfile_objfile = NULL; | |
571 | } | |
572 | ||
573 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
574 | If the user wants to get rid of them, they should do "symbol-file" |
575 | without arguments first. Not sure this is the best behavior | |
576 | (PR 2207). */ | |
c906108c | 577 | |
c5aa993b | 578 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
579 | } |
580 | ||
581 | /* Convert addr into an offset rather than an absolute address. | |
582 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 583 | and assume that <addr> is where that got loaded. |
c906108c | 584 | |
53a5351d JM |
585 | We no longer warn if the lowest section is not a text segment (as |
586 | happens for the PA64 port. */ | |
c906108c SS |
587 | if (mainline) |
588 | { | |
2acceee2 JM |
589 | /* No offset from objfile addresses. */ |
590 | addrs -> text_addr = 0; | |
591 | addrs -> data_addr = 0; | |
592 | addrs -> bss_addr = 0; | |
c906108c SS |
593 | } |
594 | else | |
595 | { | |
2acceee2 JM |
596 | /* Find lowest loadable section to be used as starting point for |
597 | continguous sections. FIXME!! won't work without call to find | |
598 | .text first, but this assumes text is lowest section. */ | |
599 | lower_sect = bfd_get_section_by_name (objfile->obfd, ".text"); | |
600 | if (lower_sect == NULL) | |
c906108c | 601 | bfd_map_over_sections (objfile->obfd, find_lowest_section, |
2acceee2 JM |
602 | (PTR) &lower_sect); |
603 | if (lower_sect == NULL) | |
c906108c SS |
604 | warning ("no loadable sections found in added symbol-file %s", |
605 | objfile->name); | |
2acceee2 JM |
606 | else if ((bfd_get_section_flags (objfile->obfd, lower_sect) & SEC_CODE) |
607 | == 0) | |
608 | warning ("Lowest section in %s is %s at %s", | |
609 | objfile->name, | |
610 | bfd_section_name (objfile->obfd, lower_sect), | |
611 | paddr (bfd_section_vma (objfile->obfd, lower_sect))); | |
612 | if (lower_sect != NULL) | |
613 | lower_offset = bfd_section_vma (objfile->obfd, lower_sect); | |
614 | else | |
615 | lower_offset = 0; | |
616 | ||
617 | /* Calculate offsets for the loadable sections. | |
618 | FIXME! Sections must be in order of increasing loadable section | |
619 | so that contiguous sections can use the lower-offset!!! | |
620 | ||
621 | Adjust offsets if the segments are not contiguous. | |
622 | If the section is contiguous, its offset should be set to | |
623 | the offset of the highest loadable section lower than it | |
624 | (the loadable section directly below it in memory). | |
625 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
626 | ||
627 | /* FIXME: These sections will not need special treatment because ALL | |
628 | sections are in the other sections table */ | |
629 | ||
630 | if (addrs->text_addr != 0) | |
631 | { | |
632 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); | |
633 | if (sect) | |
634 | { | |
635 | addrs->text_addr -= bfd_section_vma (objfile->obfd, sect); | |
636 | lower_offset = addrs->text_addr; | |
637 | } | |
638 | } | |
639 | else | |
640 | /* ??? who's below me? */ | |
641 | addrs->text_addr = lower_offset; | |
642 | ||
643 | if (addrs->data_addr != 0) | |
644 | { | |
645 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
646 | if (sect) | |
647 | { | |
648 | addrs->data_addr -= bfd_section_vma (objfile->obfd, sect); | |
649 | lower_offset = addrs->data_addr; | |
650 | } | |
651 | } | |
652 | else | |
653 | addrs->data_addr = lower_offset; | |
654 | ||
655 | if (addrs->bss_addr != 0) | |
656 | { | |
657 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
658 | if (sect) | |
659 | { | |
660 | addrs->bss_addr -= bfd_section_vma (objfile->obfd, sect); | |
661 | lower_offset = addrs->bss_addr; | |
662 | } | |
663 | } | |
664 | else | |
665 | addrs->bss_addr = lower_offset; | |
666 | ||
667 | /* Now calculate offsets for other sections. */ | |
668 | for (i=0 ; i < MAX_SECTIONS && addrs->other[i].name; i++) | |
669 | { | |
670 | ||
671 | if (addrs->other[i].addr != 0) | |
672 | { | |
673 | sect=bfd_get_section_by_name(objfile->obfd, addrs->other[i].name); | |
674 | if (sect) | |
675 | { | |
676 | addrs->other[i].addr -= bfd_section_vma (objfile->obfd, sect); | |
677 | lower_offset = addrs->other[i].addr; | |
678 | addrs->other[i].sectindex = sect->index ; | |
679 | } | |
680 | else | |
681 | { | |
682 | warning ("section %s not found in %s", addrs->other[i].name, | |
683 | objfile->name); | |
684 | addrs->other[i].addr = 0; | |
685 | } | |
686 | } | |
687 | else | |
688 | addrs->other[i].addr = lower_offset; | |
689 | } | |
c906108c SS |
690 | } |
691 | ||
692 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
693 | appear for this new file, and record how verbose to be, then do the | |
694 | initial symbol reading for this file. */ | |
695 | ||
c5aa993b | 696 | (*objfile->sf->sym_init) (objfile); |
c906108c SS |
697 | clear_complaints (1, verbo); |
698 | ||
2acceee2 | 699 | (*objfile->sf->sym_offsets) (objfile, addrs); |
c906108c SS |
700 | |
701 | #ifndef IBM6000_TARGET | |
702 | /* This is a SVR4/SunOS specific hack, I think. In any event, it | |
703 | screws RS/6000. sym_offsets should be doing this sort of thing, | |
704 | because it knows the mapping between bfd sections and | |
705 | section_offsets. */ | |
706 | /* This is a hack. As far as I can tell, section offsets are not | |
707 | target dependent. They are all set to addr with a couple of | |
708 | exceptions. The exceptions are sysvr4 shared libraries, whose | |
709 | offsets are kept in solib structures anyway and rs6000 xcoff | |
710 | which handles shared libraries in a completely unique way. | |
711 | ||
712 | Section offsets are built similarly, except that they are built | |
713 | by adding addr in all cases because there is no clear mapping | |
714 | from section_offsets into actual sections. Note that solib.c | |
96baa820 | 715 | has a different algorithm for finding section offsets. |
c906108c SS |
716 | |
717 | These should probably all be collapsed into some target | |
718 | independent form of shared library support. FIXME. */ | |
719 | ||
2acceee2 | 720 | if (addrs) |
c906108c SS |
721 | { |
722 | struct obj_section *s; | |
723 | ||
2acceee2 JM |
724 | /* Map section offsets in "addr" back to the object's |
725 | sections by comparing the section names with bfd's | |
726 | section names. Then adjust the section address by | |
727 | the offset. */ /* for gdb/13815 */ | |
728 | ||
96baa820 | 729 | ALL_OBJFILE_OSECTIONS (objfile, s) |
c906108c | 730 | { |
2acceee2 JM |
731 | CORE_ADDR s_addr = 0; |
732 | int i; | |
733 | ||
734 | if (strcmp (s->the_bfd_section->name, ".text") == 0) | |
735 | s_addr = addrs->text_addr; | |
736 | else if (strcmp (s->the_bfd_section->name, ".data") == 0) | |
737 | s_addr = addrs->data_addr; | |
738 | else if (strcmp (s->the_bfd_section->name, ".bss") == 0) | |
739 | s_addr = addrs->bss_addr; | |
740 | else | |
741 | for (i = 0; !s_addr && addrs->other[i].name; i++) | |
742 | if (strcmp (s->the_bfd_section->name, addrs->other[i].name) == 0) | |
743 | s_addr = addrs->other[i].addr; /* end added for gdb/13815 */ | |
744 | ||
c906108c | 745 | s->addr -= s->offset; |
2acceee2 | 746 | s->addr += s_addr; |
c906108c | 747 | s->endaddr -= s->offset; |
2acceee2 JM |
748 | s->endaddr += s_addr; |
749 | s->offset += s_addr; | |
c906108c SS |
750 | } |
751 | } | |
752 | #endif /* not IBM6000_TARGET */ | |
753 | ||
96baa820 | 754 | (*objfile->sf->sym_read) (objfile, mainline); |
c906108c SS |
755 | |
756 | if (!have_partial_symbols () && !have_full_symbols ()) | |
757 | { | |
758 | wrap_here (""); | |
759 | printf_filtered ("(no debugging symbols found)..."); | |
760 | wrap_here (""); | |
761 | } | |
762 | ||
763 | /* Don't allow char * to have a typename (else would get caddr_t). | |
764 | Ditto void *. FIXME: Check whether this is now done by all the | |
765 | symbol readers themselves (many of them now do), and if so remove | |
766 | it from here. */ | |
767 | ||
768 | TYPE_NAME (lookup_pointer_type (builtin_type_char)) = 0; | |
769 | TYPE_NAME (lookup_pointer_type (builtin_type_void)) = 0; | |
770 | ||
771 | /* Mark the objfile has having had initial symbol read attempted. Note | |
772 | that this does not mean we found any symbols... */ | |
773 | ||
c5aa993b | 774 | objfile->flags |= OBJF_SYMS; |
c906108c SS |
775 | |
776 | /* Discard cleanups as symbol reading was successful. */ | |
777 | ||
778 | discard_cleanups (old_chain); | |
779 | ||
96baa820 JM |
780 | /* Call this after reading in a new symbol table to give target |
781 | dependant code a crack at the new symbols. For instance, this | |
782 | could be used to update the values of target-specific symbols GDB | |
783 | needs to keep track of (such as _sigtramp, or whatever). */ | |
c906108c SS |
784 | |
785 | TARGET_SYMFILE_POSTREAD (objfile); | |
786 | } | |
787 | ||
788 | /* Perform required actions after either reading in the initial | |
789 | symbols for a new objfile, or mapping in the symbols from a reusable | |
790 | objfile. */ | |
c5aa993b | 791 | |
c906108c SS |
792 | void |
793 | new_symfile_objfile (objfile, mainline, verbo) | |
794 | struct objfile *objfile; | |
795 | int mainline; | |
796 | int verbo; | |
797 | { | |
798 | ||
799 | /* If this is the main symbol file we have to clean up all users of the | |
800 | old main symbol file. Otherwise it is sufficient to fixup all the | |
801 | breakpoints that may have been redefined by this symbol file. */ | |
802 | if (mainline) | |
803 | { | |
804 | /* OK, make it the "real" symbol file. */ | |
805 | symfile_objfile = objfile; | |
806 | ||
807 | clear_symtab_users (); | |
808 | } | |
809 | else | |
810 | { | |
811 | breakpoint_re_set (); | |
812 | } | |
813 | ||
814 | /* We're done reading the symbol file; finish off complaints. */ | |
815 | clear_complaints (0, verbo); | |
816 | } | |
817 | ||
818 | /* Process a symbol file, as either the main file or as a dynamically | |
819 | loaded file. | |
820 | ||
821 | NAME is the file name (which will be tilde-expanded and made | |
822 | absolute herein) (but we don't free or modify NAME itself). | |
823 | FROM_TTY says how verbose to be. MAINLINE specifies whether this | |
824 | is the main symbol file, or whether it's an extra symbol file such | |
825 | as dynamically loaded code. If !mainline, ADDR is the address | |
826 | where the text segment was loaded. | |
827 | ||
c906108c SS |
828 | Upon success, returns a pointer to the objfile that was added. |
829 | Upon failure, jumps back to command level (never returns). */ | |
830 | ||
831 | struct objfile * | |
2df3850c | 832 | symbol_file_add (name, from_tty, addrs, mainline, flags) |
c906108c SS |
833 | char *name; |
834 | int from_tty; | |
2acceee2 | 835 | struct section_addr_info *addrs; |
c906108c | 836 | int mainline; |
2acceee2 | 837 | int flags; |
c906108c SS |
838 | { |
839 | struct objfile *objfile; | |
840 | struct partial_symtab *psymtab; | |
841 | bfd *abfd; | |
842 | ||
843 | /* Open a bfd for the file, and give user a chance to burp if we'd be | |
844 | interactively wiping out any existing symbols. */ | |
845 | ||
846 | abfd = symfile_bfd_open (name); | |
847 | ||
848 | if ((have_full_symbols () || have_partial_symbols ()) | |
849 | && mainline | |
850 | && from_tty | |
851 | && !query ("Load new symbol table from \"%s\"? ", name)) | |
c5aa993b | 852 | error ("Not confirmed."); |
c906108c | 853 | |
2df3850c | 854 | objfile = allocate_objfile (abfd, flags); |
c906108c SS |
855 | |
856 | /* If the objfile uses a mapped symbol file, and we have a psymtab for | |
857 | it, then skip reading any symbols at this time. */ | |
858 | ||
c5aa993b | 859 | if ((objfile->flags & OBJF_MAPPED) && (objfile->flags & OBJF_SYMS)) |
c906108c SS |
860 | { |
861 | /* We mapped in an existing symbol table file that already has had | |
c5aa993b JM |
862 | initial symbol reading performed, so we can skip that part. Notify |
863 | the user that instead of reading the symbols, they have been mapped. | |
864 | */ | |
c906108c SS |
865 | if (from_tty || info_verbose) |
866 | { | |
867 | printf_filtered ("Mapped symbols for %s...", name); | |
868 | wrap_here (""); | |
869 | gdb_flush (gdb_stdout); | |
870 | } | |
871 | init_entry_point_info (objfile); | |
872 | find_sym_fns (objfile); | |
873 | } | |
874 | else | |
875 | { | |
876 | /* We either created a new mapped symbol table, mapped an existing | |
c5aa993b JM |
877 | symbol table file which has not had initial symbol reading |
878 | performed, or need to read an unmapped symbol table. */ | |
c906108c SS |
879 | if (from_tty || info_verbose) |
880 | { | |
881 | if (pre_add_symbol_hook) | |
882 | pre_add_symbol_hook (name); | |
883 | else | |
884 | { | |
885 | printf_filtered ("Reading symbols from %s...", name); | |
886 | wrap_here (""); | |
887 | gdb_flush (gdb_stdout); | |
888 | } | |
889 | } | |
2acceee2 | 890 | syms_from_objfile (objfile, addrs, mainline, from_tty); |
c906108c SS |
891 | } |
892 | ||
893 | /* We now have at least a partial symbol table. Check to see if the | |
894 | user requested that all symbols be read on initial access via either | |
895 | the gdb startup command line or on a per symbol file basis. Expand | |
896 | all partial symbol tables for this objfile if so. */ | |
897 | ||
2acceee2 | 898 | if ((flags & OBJF_READNOW) || readnow_symbol_files) |
c906108c SS |
899 | { |
900 | if (from_tty || info_verbose) | |
901 | { | |
902 | printf_filtered ("expanding to full symbols..."); | |
903 | wrap_here (""); | |
904 | gdb_flush (gdb_stdout); | |
905 | } | |
906 | ||
c5aa993b | 907 | for (psymtab = objfile->psymtabs; |
c906108c | 908 | psymtab != NULL; |
c5aa993b | 909 | psymtab = psymtab->next) |
c906108c SS |
910 | { |
911 | psymtab_to_symtab (psymtab); | |
912 | } | |
913 | } | |
914 | ||
915 | if (from_tty || info_verbose) | |
916 | { | |
917 | if (post_add_symbol_hook) | |
c5aa993b | 918 | post_add_symbol_hook (); |
c906108c | 919 | else |
c5aa993b JM |
920 | { |
921 | printf_filtered ("done.\n"); | |
922 | gdb_flush (gdb_stdout); | |
923 | } | |
c906108c SS |
924 | } |
925 | ||
926 | new_symfile_objfile (objfile, mainline, from_tty); | |
927 | ||
11cf8741 JM |
928 | if (target_new_objfile_hook) |
929 | target_new_objfile_hook (objfile); | |
c906108c SS |
930 | |
931 | return (objfile); | |
932 | } | |
933 | ||
934 | /* This is the symbol-file command. Read the file, analyze its | |
935 | symbols, and add a struct symtab to a symtab list. The syntax of | |
936 | the command is rather bizarre--(1) buildargv implements various | |
937 | quoting conventions which are undocumented and have little or | |
938 | nothing in common with the way things are quoted (or not quoted) | |
939 | elsewhere in GDB, (2) options are used, which are not generally | |
940 | used in GDB (perhaps "set mapped on", "set readnow on" would be | |
941 | better), (3) the order of options matters, which is contrary to GNU | |
942 | conventions (because it is confusing and inconvenient). */ | |
943 | ||
944 | void | |
945 | symbol_file_command (args, from_tty) | |
946 | char *args; | |
947 | int from_tty; | |
948 | { | |
949 | char **argv; | |
950 | char *name = NULL; | |
c5aa993b | 951 | CORE_ADDR text_relocation = 0; /* text_relocation */ |
c906108c | 952 | struct cleanup *cleanups; |
2df3850c | 953 | int flags = OBJF_USERLOADED; |
c906108c SS |
954 | |
955 | dont_repeat (); | |
956 | ||
957 | if (args == NULL) | |
958 | { | |
959 | if ((have_full_symbols () || have_partial_symbols ()) | |
960 | && from_tty | |
961 | && !query ("Discard symbol table from `%s'? ", | |
c5aa993b | 962 | symfile_objfile->name)) |
c906108c SS |
963 | error ("Not confirmed."); |
964 | free_all_objfiles (); | |
965 | ||
966 | /* solib descriptors may have handles to objfiles. Since their | |
967 | storage has just been released, we'd better wipe the solib | |
968 | descriptors as well. | |
c5aa993b | 969 | */ |
c906108c SS |
970 | #if defined(SOLIB_RESTART) |
971 | SOLIB_RESTART (); | |
972 | #endif | |
973 | ||
974 | symfile_objfile = NULL; | |
975 | if (from_tty) | |
976 | { | |
977 | printf_unfiltered ("No symbol file now.\n"); | |
978 | } | |
979 | #ifdef HPUXHPPA | |
980 | RESET_HP_UX_GLOBALS (); | |
981 | #endif | |
982 | } | |
983 | else | |
984 | { | |
985 | if ((argv = buildargv (args)) == NULL) | |
986 | { | |
987 | nomem (0); | |
988 | } | |
7a292a7a | 989 | cleanups = make_cleanup_freeargv (argv); |
c906108c SS |
990 | while (*argv != NULL) |
991 | { | |
992 | if (STREQ (*argv, "-mapped")) | |
993 | { | |
2acceee2 | 994 | flags |= OBJF_MAPPED; |
c906108c SS |
995 | } |
996 | else if (STREQ (*argv, "-readnow")) | |
997 | { | |
2acceee2 | 998 | flags |= OBJF_READNOW; |
c906108c SS |
999 | } |
1000 | else if (**argv == '-') | |
1001 | { | |
1002 | error ("unknown option `%s'", *argv); | |
1003 | } | |
1004 | else | |
1005 | { | |
c5aa993b | 1006 | char *p; |
c906108c | 1007 | |
c5aa993b | 1008 | name = *argv; |
c906108c | 1009 | |
c5aa993b JM |
1010 | /* this is for rombug remote only, to get the text relocation by |
1011 | using link command */ | |
1012 | p = strrchr (name, '/'); | |
1013 | if (p != NULL) | |
1014 | p++; | |
1015 | else | |
1016 | p = name; | |
c906108c | 1017 | |
c5aa993b | 1018 | target_link (p, &text_relocation); |
c906108c | 1019 | |
c5aa993b JM |
1020 | if (text_relocation == (CORE_ADDR) 0) |
1021 | return; | |
a0b3c4fd | 1022 | else if (text_relocation == (CORE_ADDR) -1) |
c5aa993b | 1023 | { |
2df3850c | 1024 | symbol_file_add (name, from_tty, NULL, 1, flags); |
c906108c | 1025 | #ifdef HPUXHPPA |
c5aa993b | 1026 | RESET_HP_UX_GLOBALS (); |
c906108c | 1027 | #endif |
c5aa993b JM |
1028 | } |
1029 | else | |
2acceee2 JM |
1030 | { |
1031 | struct section_addr_info section_addrs; | |
1032 | memset (§ion_addrs, 0, sizeof (section_addrs)); | |
1033 | section_addrs.text_addr = (CORE_ADDR) text_relocation; | |
2df3850c | 1034 | symbol_file_add (name, from_tty, §ion_addrs, 0, flags); |
2acceee2 | 1035 | } |
c906108c SS |
1036 | |
1037 | /* Getting new symbols may change our opinion about what is | |
c5aa993b | 1038 | frameless. */ |
c906108c SS |
1039 | reinit_frame_cache (); |
1040 | ||
c5aa993b | 1041 | set_initial_language (); |
c906108c SS |
1042 | } |
1043 | argv++; | |
1044 | } | |
1045 | ||
1046 | if (name == NULL) | |
1047 | { | |
1048 | error ("no symbol file name was specified"); | |
1049 | } | |
c5aa993b | 1050 | TUIDO (((TuiOpaqueFuncPtr) tuiDisplayMainFunction)); |
c906108c SS |
1051 | do_cleanups (cleanups); |
1052 | } | |
1053 | } | |
1054 | ||
1055 | /* Set the initial language. | |
1056 | ||
1057 | A better solution would be to record the language in the psymtab when reading | |
1058 | partial symbols, and then use it (if known) to set the language. This would | |
1059 | be a win for formats that encode the language in an easily discoverable place, | |
1060 | such as DWARF. For stabs, we can jump through hoops looking for specially | |
1061 | named symbols or try to intuit the language from the specific type of stabs | |
1062 | we find, but we can't do that until later when we read in full symbols. | |
1063 | FIXME. */ | |
1064 | ||
1065 | static void | |
1066 | set_initial_language () | |
1067 | { | |
1068 | struct partial_symtab *pst; | |
c5aa993b | 1069 | enum language lang = language_unknown; |
c906108c SS |
1070 | |
1071 | pst = find_main_psymtab (); | |
1072 | if (pst != NULL) | |
1073 | { | |
c5aa993b | 1074 | if (pst->filename != NULL) |
c906108c | 1075 | { |
c5aa993b JM |
1076 | lang = deduce_language_from_filename (pst->filename); |
1077 | } | |
c906108c SS |
1078 | if (lang == language_unknown) |
1079 | { | |
c5aa993b JM |
1080 | /* Make C the default language */ |
1081 | lang = language_c; | |
c906108c SS |
1082 | } |
1083 | set_language (lang); | |
1084 | expected_language = current_language; /* Don't warn the user */ | |
1085 | } | |
1086 | } | |
1087 | ||
1088 | /* Open file specified by NAME and hand it off to BFD for preliminary | |
1089 | analysis. Result is a newly initialized bfd *, which includes a newly | |
1090 | malloc'd` copy of NAME (tilde-expanded and made absolute). | |
1091 | In case of trouble, error() is called. */ | |
1092 | ||
1093 | bfd * | |
1094 | symfile_bfd_open (name) | |
1095 | char *name; | |
1096 | { | |
1097 | bfd *sym_bfd; | |
1098 | int desc; | |
1099 | char *absolute_name; | |
1100 | ||
1101 | ||
1102 | ||
1103 | name = tilde_expand (name); /* Returns 1st new malloc'd copy */ | |
1104 | ||
1105 | /* Look down path for it, allocate 2nd new malloc'd copy. */ | |
1106 | desc = openp (getenv ("PATH"), 1, name, O_RDONLY | O_BINARY, 0, &absolute_name); | |
1107 | #if defined(__GO32__) || defined(_WIN32) | |
1108 | if (desc < 0) | |
1109 | { | |
1110 | char *exename = alloca (strlen (name) + 5); | |
1111 | strcat (strcpy (exename, name), ".exe"); | |
1112 | desc = openp (getenv ("PATH"), 1, exename, O_RDONLY | O_BINARY, | |
c5aa993b | 1113 | 0, &absolute_name); |
c906108c SS |
1114 | } |
1115 | #endif | |
1116 | if (desc < 0) | |
1117 | { | |
1118 | make_cleanup (free, name); | |
1119 | perror_with_name (name); | |
1120 | } | |
1121 | free (name); /* Free 1st new malloc'd copy */ | |
1122 | name = absolute_name; /* Keep 2nd malloc'd copy in bfd */ | |
c5aa993b | 1123 | /* It'll be freed in free_objfile(). */ |
c906108c SS |
1124 | |
1125 | sym_bfd = bfd_fdopenr (name, gnutarget, desc); | |
1126 | if (!sym_bfd) | |
1127 | { | |
1128 | close (desc); | |
1129 | make_cleanup (free, name); | |
1130 | error ("\"%s\": can't open to read symbols: %s.", name, | |
1131 | bfd_errmsg (bfd_get_error ())); | |
1132 | } | |
1133 | sym_bfd->cacheable = true; | |
1134 | ||
1135 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1136 | { | |
1137 | /* FIXME: should be checking for errors from bfd_close (for one thing, | |
c5aa993b JM |
1138 | on error it does not free all the storage associated with the |
1139 | bfd). */ | |
c906108c SS |
1140 | bfd_close (sym_bfd); /* This also closes desc */ |
1141 | make_cleanup (free, name); | |
1142 | error ("\"%s\": can't read symbols: %s.", name, | |
1143 | bfd_errmsg (bfd_get_error ())); | |
1144 | } | |
1145 | return (sym_bfd); | |
1146 | } | |
1147 | ||
1148 | /* Link a new symtab_fns into the global symtab_fns list. Called on gdb | |
1149 | startup by the _initialize routine in each object file format reader, | |
1150 | to register information about each format the the reader is prepared | |
1151 | to handle. */ | |
1152 | ||
1153 | void | |
1154 | add_symtab_fns (sf) | |
1155 | struct sym_fns *sf; | |
1156 | { | |
1157 | sf->next = symtab_fns; | |
1158 | symtab_fns = sf; | |
1159 | } | |
1160 | ||
1161 | ||
1162 | /* Initialize to read symbols from the symbol file sym_bfd. It either | |
1163 | returns or calls error(). The result is an initialized struct sym_fns | |
1164 | in the objfile structure, that contains cached information about the | |
1165 | symbol file. */ | |
1166 | ||
1167 | static void | |
1168 | find_sym_fns (objfile) | |
1169 | struct objfile *objfile; | |
1170 | { | |
1171 | struct sym_fns *sf; | |
c5aa993b JM |
1172 | enum bfd_flavour our_flavour = bfd_get_flavour (objfile->obfd); |
1173 | char *our_target = bfd_get_target (objfile->obfd); | |
c906108c SS |
1174 | |
1175 | /* Special kludge for RS/6000 and PowerMac. See xcoffread.c. */ | |
1176 | if (STREQ (our_target, "aixcoff-rs6000") || | |
1177 | STREQ (our_target, "xcoff-powermac")) | |
c5aa993b | 1178 | our_flavour = (enum bfd_flavour) -1; |
c906108c SS |
1179 | |
1180 | /* Special kludge for apollo. See dstread.c. */ | |
1181 | if (STREQN (our_target, "apollo", 6)) | |
c5aa993b | 1182 | our_flavour = (enum bfd_flavour) -2; |
c906108c | 1183 | |
c5aa993b | 1184 | for (sf = symtab_fns; sf != NULL; sf = sf->next) |
c906108c | 1185 | { |
c5aa993b | 1186 | if (our_flavour == sf->sym_flavour) |
c906108c | 1187 | { |
c5aa993b | 1188 | objfile->sf = sf; |
c906108c SS |
1189 | return; |
1190 | } | |
1191 | } | |
1192 | error ("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown.", | |
c5aa993b | 1193 | bfd_get_target (objfile->obfd)); |
c906108c SS |
1194 | } |
1195 | \f | |
1196 | /* This function runs the load command of our current target. */ | |
1197 | ||
1198 | static void | |
1199 | load_command (arg, from_tty) | |
1200 | char *arg; | |
1201 | int from_tty; | |
1202 | { | |
1203 | if (arg == NULL) | |
1204 | arg = get_exec_file (1); | |
1205 | target_load (arg, from_tty); | |
1206 | } | |
1207 | ||
1208 | /* This version of "load" should be usable for any target. Currently | |
1209 | it is just used for remote targets, not inftarg.c or core files, | |
1210 | on the theory that only in that case is it useful. | |
1211 | ||
1212 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1213 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1214 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1215 | performance compares. */ | |
917317f4 JM |
1216 | |
1217 | static int download_write_size = 512; | |
1218 | static int validate_download = 0; | |
1219 | ||
c906108c | 1220 | void |
917317f4 | 1221 | generic_load (char *args, int from_tty) |
c906108c | 1222 | { |
c906108c SS |
1223 | asection *s; |
1224 | bfd *loadfile_bfd; | |
1225 | time_t start_time, end_time; /* Start and end times of download */ | |
1226 | unsigned long data_count = 0; /* Number of bytes transferred to memory */ | |
917317f4 JM |
1227 | unsigned long write_count = 0; /* Number of writes needed. */ |
1228 | unsigned long load_offset; /* offset to add to vma for each section */ | |
1229 | char *filename; | |
1230 | struct cleanup *old_cleanups; | |
1231 | char *offptr; | |
c2d11a7d JM |
1232 | CORE_ADDR total_size = 0; |
1233 | CORE_ADDR total_sent = 0; | |
917317f4 JM |
1234 | |
1235 | /* Parse the input argument - the user can specify a load offset as | |
1236 | a second argument. */ | |
1237 | filename = xmalloc (strlen (args) + 1); | |
1238 | old_cleanups = make_cleanup (free, filename); | |
1239 | strcpy (filename, args); | |
1240 | offptr = strchr (filename, ' '); | |
1241 | if (offptr != NULL) | |
1242 | { | |
1243 | char *endptr; | |
1244 | load_offset = strtoul (offptr, &endptr, 0); | |
1245 | if (offptr == endptr) | |
1246 | error ("Invalid download offset:%s\n", offptr); | |
1247 | *offptr = '\0'; | |
1248 | } | |
c906108c SS |
1249 | else |
1250 | load_offset = 0; | |
1251 | ||
917317f4 | 1252 | /* Open the file for loading. */ |
c906108c SS |
1253 | loadfile_bfd = bfd_openr (filename, gnutarget); |
1254 | if (loadfile_bfd == NULL) | |
1255 | { | |
1256 | perror_with_name (filename); | |
1257 | return; | |
1258 | } | |
917317f4 | 1259 | |
c906108c SS |
1260 | /* FIXME: should be checking for errors from bfd_close (for one thing, |
1261 | on error it does not free all the storage associated with the | |
1262 | bfd). */ | |
917317f4 | 1263 | make_cleanup ((make_cleanup_func) bfd_close, loadfile_bfd); |
c906108c | 1264 | |
c5aa993b | 1265 | if (!bfd_check_format (loadfile_bfd, bfd_object)) |
c906108c SS |
1266 | { |
1267 | error ("\"%s\" is not an object file: %s", filename, | |
1268 | bfd_errmsg (bfd_get_error ())); | |
1269 | } | |
c5aa993b | 1270 | |
c2d11a7d JM |
1271 | for (s = loadfile_bfd->sections; s; s = s->next) |
1272 | if (s->flags & SEC_LOAD) | |
1273 | total_size += bfd_get_section_size_before_reloc (s); | |
1274 | ||
c906108c SS |
1275 | start_time = time (NULL); |
1276 | ||
c5aa993b JM |
1277 | for (s = loadfile_bfd->sections; s; s = s->next) |
1278 | { | |
1279 | if (s->flags & SEC_LOAD) | |
1280 | { | |
917317f4 | 1281 | CORE_ADDR size = bfd_get_section_size_before_reloc (s); |
c5aa993b JM |
1282 | if (size > 0) |
1283 | { | |
1284 | char *buffer; | |
1285 | struct cleanup *old_chain; | |
917317f4 JM |
1286 | CORE_ADDR lma = s->lma + load_offset; |
1287 | CORE_ADDR block_size; | |
c5aa993b | 1288 | int err; |
917317f4 JM |
1289 | const char *sect_name = bfd_get_section_name (loadfile_bfd, s); |
1290 | CORE_ADDR sent; | |
c5aa993b | 1291 | |
917317f4 JM |
1292 | if (download_write_size > 0 && size > download_write_size) |
1293 | block_size = download_write_size; | |
1294 | else | |
1295 | block_size = size; | |
c5aa993b JM |
1296 | |
1297 | buffer = xmalloc (size); | |
1298 | old_chain = make_cleanup (free, buffer); | |
1299 | ||
c5aa993b JM |
1300 | /* Is this really necessary? I guess it gives the user something |
1301 | to look at during a long download. */ | |
917317f4 JM |
1302 | fprintf_unfiltered (gdb_stdout, |
1303 | "Loading section %s, size 0x%s lma 0x%s\n", | |
1304 | sect_name, paddr_nz (size), paddr_nz (lma)); | |
c5aa993b JM |
1305 | |
1306 | bfd_get_section_contents (loadfile_bfd, s, buffer, 0, size); | |
1307 | ||
c5aa993b JM |
1308 | sent = 0; |
1309 | do | |
1310 | { | |
917317f4 JM |
1311 | CORE_ADDR len; |
1312 | CORE_ADDR this_transfer = size - sent; | |
1313 | if (this_transfer >= block_size) | |
1314 | this_transfer = block_size; | |
1315 | len = target_write_memory_partial (lma, buffer, | |
1316 | this_transfer, &err); | |
c5aa993b JM |
1317 | if (err) |
1318 | break; | |
917317f4 JM |
1319 | if (validate_download) |
1320 | { | |
1321 | /* Broken memories and broken monitors manifest | |
1322 | themselves here when bring new computers to | |
1323 | life. This doubles already slow downloads. */ | |
1324 | /* NOTE: cagney/1999-10-18: A more efficient | |
1325 | implementation might add a verify_memory() | |
1326 | method to the target vector and then use | |
1327 | that. remote.c could implement that method | |
1328 | using the ``qCRC'' packet. */ | |
1329 | char *check = xmalloc (len); | |
1330 | struct cleanup *verify_cleanups = make_cleanup (free, check); | |
1331 | if (target_read_memory (lma, check, len) != 0) | |
1332 | error ("Download verify read failed at 0x%s", | |
1333 | paddr (lma)); | |
1334 | if (memcmp (buffer, check, len) != 0) | |
1335 | error ("Download verify compare failed at 0x%s", | |
1336 | paddr (lma)); | |
1337 | do_cleanups (verify_cleanups); | |
1338 | } | |
c5aa993b JM |
1339 | data_count += len; |
1340 | lma += len; | |
1341 | buffer += len; | |
917317f4 JM |
1342 | write_count += 1; |
1343 | sent += len; | |
c2d11a7d | 1344 | total_sent += len; |
917317f4 JM |
1345 | if (quit_flag |
1346 | || (ui_load_progress_hook != NULL | |
1347 | && ui_load_progress_hook (sect_name, sent))) | |
1348 | error ("Canceled the download"); | |
c2d11a7d JM |
1349 | |
1350 | if (show_load_progress != NULL) | |
1351 | show_load_progress (sect_name, sent, size, total_sent, total_size); | |
917317f4 JM |
1352 | } |
1353 | while (sent < size); | |
c5aa993b JM |
1354 | |
1355 | if (err != 0) | |
917317f4 | 1356 | error ("Memory access error while loading section %s.", sect_name); |
c906108c | 1357 | |
c5aa993b JM |
1358 | do_cleanups (old_chain); |
1359 | } | |
1360 | } | |
c906108c SS |
1361 | } |
1362 | ||
1363 | end_time = time (NULL); | |
1364 | { | |
917317f4 | 1365 | CORE_ADDR entry; |
c5aa993b | 1366 | entry = bfd_get_start_address (loadfile_bfd); |
917317f4 JM |
1367 | fprintf_unfiltered (gdb_stdout, |
1368 | "Start address 0x%s , load size %ld\n", | |
1369 | paddr_nz (entry), data_count); | |
c906108c SS |
1370 | /* We were doing this in remote-mips.c, I suspect it is right |
1371 | for other targets too. */ | |
1372 | write_pc (entry); | |
1373 | } | |
1374 | ||
1375 | /* FIXME: are we supposed to call symbol_file_add or not? According to | |
1376 | a comment from remote-mips.c (where a call to symbol_file_add was | |
1377 | commented out), making the call confuses GDB if more than one file is | |
1378 | loaded in. remote-nindy.c had no call to symbol_file_add, but remote-vx.c | |
1379 | does. */ | |
1380 | ||
917317f4 JM |
1381 | print_transfer_performance (gdb_stdout, data_count, write_count, |
1382 | end_time - start_time); | |
c906108c SS |
1383 | |
1384 | do_cleanups (old_cleanups); | |
1385 | } | |
1386 | ||
1387 | /* Report how fast the transfer went. */ | |
1388 | ||
917317f4 JM |
1389 | /* DEPRECATED: cagney/1999-10-18: report_transfer_performance is being |
1390 | replaced by print_transfer_performance (with a very different | |
1391 | function signature). */ | |
1392 | ||
c906108c SS |
1393 | void |
1394 | report_transfer_performance (data_count, start_time, end_time) | |
c5aa993b JM |
1395 | unsigned long data_count; |
1396 | time_t start_time, end_time; | |
c906108c | 1397 | { |
917317f4 JM |
1398 | print_transfer_performance (gdb_stdout, data_count, end_time - start_time, 0); |
1399 | } | |
1400 | ||
1401 | void | |
d9fcf2fb | 1402 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
1403 | unsigned long data_count, |
1404 | unsigned long write_count, | |
1405 | unsigned long time_count) | |
1406 | { | |
1407 | fprintf_unfiltered (stream, "Transfer rate: "); | |
1408 | if (time_count > 0) | |
1409 | fprintf_unfiltered (stream, "%ld bits/sec", (data_count * 8) / time_count); | |
c906108c | 1410 | else |
917317f4 JM |
1411 | fprintf_unfiltered (stream, "%ld bits in <1 sec", (data_count * 8)); |
1412 | if (write_count > 0) | |
1413 | fprintf_unfiltered (stream, ", %ld bytes/write", data_count / write_count); | |
1414 | fprintf_unfiltered (stream, ".\n"); | |
c906108c SS |
1415 | } |
1416 | ||
1417 | /* This function allows the addition of incrementally linked object files. | |
1418 | It does not modify any state in the target, only in the debugger. */ | |
1419 | ||
1420 | /* ARGSUSED */ | |
1421 | static void | |
1422 | add_symbol_file_command (args, from_tty) | |
1423 | char *args; | |
1424 | int from_tty; | |
1425 | { | |
1426 | char *name = NULL; | |
1427 | CORE_ADDR text_addr; | |
2df3850c | 1428 | int flags = OBJF_USERLOADED; |
c906108c | 1429 | char *arg; |
2acceee2 JM |
1430 | int expecting_option = 0; |
1431 | int option_index = 0; | |
1432 | int argcnt = 0; | |
1433 | int sec_num = 0; | |
1434 | int i; | |
1435 | struct | |
1436 | { | |
1437 | enum { OPT_SECTION } type; | |
1438 | char *name; | |
1439 | char *value; | |
1440 | } opt[SECT_OFF_MAX]; | |
1441 | struct section_addr_info section_addrs; | |
c5aa993b | 1442 | |
c906108c SS |
1443 | dont_repeat (); |
1444 | ||
1445 | if (args == NULL) | |
1446 | { | |
1447 | error ("add-symbol-file takes a file name and an address"); | |
1448 | } | |
1449 | ||
1450 | /* Make a copy of the string that we can safely write into. */ | |
1451 | ||
c2d11a7d | 1452 | args = xstrdup (args); |
c906108c SS |
1453 | make_cleanup (free, args); |
1454 | ||
2acceee2 JM |
1455 | /* Ensure section_addrs is initialized */ |
1456 | memset (§ion_addrs, 0, sizeof (section_addrs)); | |
1457 | ||
c906108c SS |
1458 | /* Pick off any -option args and the file name. */ |
1459 | ||
2acceee2 | 1460 | while (*args != '\000') |
c906108c | 1461 | { |
c5aa993b JM |
1462 | while (isspace (*args)) |
1463 | { | |
1464 | args++; | |
1465 | } | |
c906108c | 1466 | arg = args; |
c5aa993b JM |
1467 | while ((*args != '\000') && !isspace (*args)) |
1468 | { | |
1469 | args++; | |
1470 | } | |
c906108c SS |
1471 | if (*args != '\000') |
1472 | { | |
1473 | *args++ = '\000'; | |
1474 | } | |
1475 | if (*arg != '-') | |
1476 | { | |
2acceee2 JM |
1477 | if (expecting_option) |
1478 | { | |
1479 | opt[option_index++].value = arg; | |
1480 | expecting_option = 0; | |
1481 | } | |
1482 | else | |
1483 | { | |
1484 | switch (argcnt) | |
1485 | { | |
1486 | case 0: | |
1487 | name = arg; | |
1488 | break; | |
1489 | case 1: | |
1490 | opt[option_index].type = OPT_SECTION; | |
1491 | opt[option_index].name = ".text"; | |
1492 | opt[option_index++].value = arg; | |
1493 | break; | |
1494 | case 2: | |
1495 | opt[option_index].type = OPT_SECTION; | |
1496 | opt[option_index].name = ".data"; | |
1497 | opt[option_index++].value = arg; | |
1498 | break; | |
1499 | case 3: | |
1500 | opt[option_index].type = OPT_SECTION; | |
1501 | opt[option_index].name = ".bss"; | |
1502 | opt[option_index++].value = arg; | |
1503 | break; | |
1504 | default: | |
1505 | warning ("Too many arguments entered; see \"help add-symbol-file\" for command syntax."); | |
1506 | } | |
1507 | argcnt++; | |
1508 | } | |
c906108c SS |
1509 | } |
1510 | else if (STREQ (arg, "-mapped")) | |
1511 | { | |
2acceee2 | 1512 | flags |= OBJF_MAPPED; |
c906108c SS |
1513 | } |
1514 | else if (STREQ (arg, "-readnow")) | |
1515 | { | |
2acceee2 | 1516 | flags |= OBJF_READNOW; |
c906108c | 1517 | } |
2acceee2 JM |
1518 | else if (STREQN (arg, "-T", 2)) |
1519 | { | |
1520 | if (option_index >= SECT_OFF_MAX) | |
1521 | { | |
1522 | warning ("Number of options exceeds maximum allowed."); | |
1523 | } | |
1524 | else | |
1525 | { | |
1526 | expecting_option = 1; | |
1527 | opt[option_index].type = OPT_SECTION; | |
1528 | opt[option_index].name = arg + 2; | |
1529 | } | |
1530 | } | |
1531 | else | |
1532 | { | |
1533 | error ("Unknown option `%s'", arg); | |
1534 | } | |
c906108c SS |
1535 | } |
1536 | ||
c906108c SS |
1537 | if (name == NULL) |
1538 | { | |
1539 | error ("add-symbol-file takes a file name"); | |
1540 | } | |
1541 | name = tilde_expand (name); | |
1542 | make_cleanup (free, name); | |
1543 | ||
2acceee2 | 1544 | if (option_index > 0) |
c906108c | 1545 | { |
2acceee2 JM |
1546 | /* Print the prompt for the query below. |
1547 | We have to split this up into 3 print statements because | |
1548 | local_hex_string returns a local static string. */ | |
1549 | ||
1550 | printf_filtered ("add symbol table from file \"%s\" at\n", name); | |
1551 | for (i = 0; i < option_index; i++) | |
1552 | { | |
1553 | switch (opt[i].type) | |
1554 | { | |
1555 | case OPT_SECTION: | |
1556 | { | |
1557 | CORE_ADDR addr; | |
1558 | char *val = opt[i].value; | |
1559 | char *sec = opt[i].name; | |
1560 | ||
1561 | val = opt[i].value; | |
1562 | if (val[0] == '0' && val[1] == 'x') | |
1563 | addr = strtoul (val+2, NULL, 16); | |
1564 | else | |
1565 | addr = strtoul (val, NULL, 10); | |
1566 | ||
1567 | if (strcmp (sec, ".text") == 0) | |
1568 | section_addrs.text_addr = addr; | |
1569 | else if (strcmp (sec, ".data") == 0) | |
1570 | section_addrs.data_addr = addr; | |
1571 | else if (strcmp (sec, ".bss") == 0) | |
1572 | section_addrs.bss_addr = addr; | |
1573 | /* Add the section to the others even if it is a | |
1574 | text data or bss section. This is redundent but | |
1575 | eventually, none will be given special treatment */ | |
1576 | { | |
c2d11a7d | 1577 | section_addrs.other[sec_num].name = xstrdup (sec); |
2acceee2 JM |
1578 | make_cleanup (free, section_addrs.other[sec_num].name); |
1579 | section_addrs.other[sec_num++].addr = addr; | |
1580 | printf_filtered ("\t%s_addr = %s\n", | |
1581 | sec, | |
1582 | local_hex_string ((unsigned long)addr)); | |
1583 | } | |
1584 | ||
1585 | /* The object's sections are initialized when a | |
1586 | call is made to build_objfile_section_table (objfile). | |
1587 | This happens in reread_symbols. | |
1588 | At this point, we don't know what file type this is, | |
1589 | so we can't determine what section names are valid. */ | |
1590 | } | |
1591 | break; | |
1592 | default: | |
1593 | complain (&unknown_option_complaint, opt[i].name); | |
1594 | } | |
1595 | } | |
1596 | /* Eventually, these hard coded names will be obsolete */ | |
1597 | /* All the addresses will be on the others section */ | |
c906108c SS |
1598 | } |
1599 | else | |
1600 | { | |
2acceee2 JM |
1601 | CORE_ADDR text_addr; |
1602 | target_link (name, &text_addr); | |
a0b3c4fd | 1603 | if (text_addr == (CORE_ADDR) -1) |
2acceee2 JM |
1604 | error("Don't know how to get text start location for this file"); |
1605 | section_addrs.text_addr = text_addr; | |
1606 | section_addrs.data_addr = 0; | |
1607 | section_addrs.bss_addr = 0; | |
1608 | printf_filtered("add symbol table from file \"%s\" at text_addr = %s?\n", | |
1609 | name, local_hex_string ((unsigned long)text_addr)); | |
1610 | } | |
1611 | if (from_tty && (!query ("%s", ""))) | |
c906108c SS |
1612 | error ("Not confirmed."); |
1613 | ||
2df3850c | 1614 | symbol_file_add (name, from_tty, §ion_addrs, 0, flags); |
c906108c SS |
1615 | |
1616 | /* Getting new symbols may change our opinion about what is | |
1617 | frameless. */ | |
1618 | reinit_frame_cache (); | |
1619 | } | |
1620 | \f | |
1621 | static void | |
c5aa993b | 1622 | add_shared_symbol_files_command (args, from_tty) |
c906108c SS |
1623 | char *args; |
1624 | int from_tty; | |
1625 | { | |
1626 | #ifdef ADD_SHARED_SYMBOL_FILES | |
1627 | ADD_SHARED_SYMBOL_FILES (args, from_tty); | |
1628 | #else | |
1629 | error ("This command is not available in this configuration of GDB."); | |
c5aa993b | 1630 | #endif |
c906108c SS |
1631 | } |
1632 | \f | |
1633 | /* Re-read symbols if a symbol-file has changed. */ | |
1634 | void | |
1635 | reread_symbols () | |
1636 | { | |
1637 | struct objfile *objfile; | |
1638 | long new_modtime; | |
1639 | int reread_one = 0; | |
1640 | struct stat new_statbuf; | |
1641 | int res; | |
1642 | ||
1643 | /* With the addition of shared libraries, this should be modified, | |
1644 | the load time should be saved in the partial symbol tables, since | |
1645 | different tables may come from different source files. FIXME. | |
1646 | This routine should then walk down each partial symbol table | |
1647 | and see if the symbol table that it originates from has been changed */ | |
1648 | ||
c5aa993b JM |
1649 | for (objfile = object_files; objfile; objfile = objfile->next) |
1650 | { | |
1651 | if (objfile->obfd) | |
1652 | { | |
c906108c | 1653 | #ifdef IBM6000_TARGET |
c5aa993b JM |
1654 | /* If this object is from a shared library, then you should |
1655 | stat on the library name, not member name. */ | |
c906108c | 1656 | |
c5aa993b JM |
1657 | if (objfile->obfd->my_archive) |
1658 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
1659 | else | |
c906108c | 1660 | #endif |
c5aa993b JM |
1661 | res = stat (objfile->name, &new_statbuf); |
1662 | if (res != 0) | |
c906108c | 1663 | { |
c5aa993b JM |
1664 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
1665 | printf_filtered ("`%s' has disappeared; keeping its symbols.\n", | |
1666 | objfile->name); | |
1667 | continue; | |
c906108c | 1668 | } |
c5aa993b JM |
1669 | new_modtime = new_statbuf.st_mtime; |
1670 | if (new_modtime != objfile->mtime) | |
c906108c | 1671 | { |
c5aa993b JM |
1672 | struct cleanup *old_cleanups; |
1673 | struct section_offsets *offsets; | |
1674 | int num_offsets; | |
c5aa993b JM |
1675 | char *obfd_filename; |
1676 | ||
1677 | printf_filtered ("`%s' has changed; re-reading symbols.\n", | |
1678 | objfile->name); | |
1679 | ||
1680 | /* There are various functions like symbol_file_add, | |
1681 | symfile_bfd_open, syms_from_objfile, etc., which might | |
1682 | appear to do what we want. But they have various other | |
1683 | effects which we *don't* want. So we just do stuff | |
1684 | ourselves. We don't worry about mapped files (for one thing, | |
1685 | any mapped file will be out of date). */ | |
1686 | ||
1687 | /* If we get an error, blow away this objfile (not sure if | |
1688 | that is the correct response for things like shared | |
1689 | libraries). */ | |
1690 | old_cleanups = make_cleanup ((make_cleanup_func) free_objfile, | |
1691 | objfile); | |
1692 | /* We need to do this whenever any symbols go away. */ | |
1693 | make_cleanup ((make_cleanup_func) clear_symtab_users, 0); | |
1694 | ||
1695 | /* Clean up any state BFD has sitting around. We don't need | |
1696 | to close the descriptor but BFD lacks a way of closing the | |
1697 | BFD without closing the descriptor. */ | |
1698 | obfd_filename = bfd_get_filename (objfile->obfd); | |
1699 | if (!bfd_close (objfile->obfd)) | |
1700 | error ("Can't close BFD for %s: %s", objfile->name, | |
1701 | bfd_errmsg (bfd_get_error ())); | |
1702 | objfile->obfd = bfd_openr (obfd_filename, gnutarget); | |
1703 | if (objfile->obfd == NULL) | |
1704 | error ("Can't open %s to read symbols.", objfile->name); | |
1705 | /* bfd_openr sets cacheable to true, which is what we want. */ | |
1706 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
1707 | error ("Can't read symbols from %s: %s.", objfile->name, | |
1708 | bfd_errmsg (bfd_get_error ())); | |
1709 | ||
1710 | /* Save the offsets, we will nuke them with the rest of the | |
1711 | psymbol_obstack. */ | |
1712 | num_offsets = objfile->num_sections; | |
d4f3574e SS |
1713 | offsets = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); |
1714 | memcpy (offsets, objfile->section_offsets, SIZEOF_SECTION_OFFSETS); | |
c5aa993b JM |
1715 | |
1716 | /* Nuke all the state that we will re-read. Much of the following | |
1717 | code which sets things to NULL really is necessary to tell | |
1718 | other parts of GDB that there is nothing currently there. */ | |
1719 | ||
1720 | /* FIXME: Do we have to free a whole linked list, or is this | |
1721 | enough? */ | |
1722 | if (objfile->global_psymbols.list) | |
1723 | mfree (objfile->md, objfile->global_psymbols.list); | |
1724 | memset (&objfile->global_psymbols, 0, | |
1725 | sizeof (objfile->global_psymbols)); | |
1726 | if (objfile->static_psymbols.list) | |
1727 | mfree (objfile->md, objfile->static_psymbols.list); | |
1728 | memset (&objfile->static_psymbols, 0, | |
1729 | sizeof (objfile->static_psymbols)); | |
1730 | ||
1731 | /* Free the obstacks for non-reusable objfiles */ | |
c2d11a7d | 1732 | free_bcache (&objfile->psymbol_cache); |
c5aa993b JM |
1733 | obstack_free (&objfile->psymbol_obstack, 0); |
1734 | obstack_free (&objfile->symbol_obstack, 0); | |
1735 | obstack_free (&objfile->type_obstack, 0); | |
1736 | objfile->sections = NULL; | |
1737 | objfile->symtabs = NULL; | |
1738 | objfile->psymtabs = NULL; | |
1739 | objfile->free_psymtabs = NULL; | |
1740 | objfile->msymbols = NULL; | |
1741 | objfile->minimal_symbol_count = 0; | |
1742 | objfile->fundamental_types = NULL; | |
1743 | if (objfile->sf != NULL) | |
1744 | { | |
1745 | (*objfile->sf->sym_finish) (objfile); | |
1746 | } | |
1747 | ||
1748 | /* We never make this a mapped file. */ | |
1749 | objfile->md = NULL; | |
1750 | /* obstack_specify_allocation also initializes the obstack so | |
1751 | it is empty. */ | |
1752 | obstack_specify_allocation (&objfile->psymbol_cache.cache, 0, 0, | |
1753 | xmalloc, free); | |
1754 | obstack_specify_allocation (&objfile->psymbol_obstack, 0, 0, | |
1755 | xmalloc, free); | |
1756 | obstack_specify_allocation (&objfile->symbol_obstack, 0, 0, | |
1757 | xmalloc, free); | |
1758 | obstack_specify_allocation (&objfile->type_obstack, 0, 0, | |
1759 | xmalloc, free); | |
1760 | if (build_objfile_section_table (objfile)) | |
1761 | { | |
1762 | error ("Can't find the file sections in `%s': %s", | |
1763 | objfile->name, bfd_errmsg (bfd_get_error ())); | |
1764 | } | |
1765 | ||
1766 | /* We use the same section offsets as from last time. I'm not | |
1767 | sure whether that is always correct for shared libraries. */ | |
1768 | objfile->section_offsets = (struct section_offsets *) | |
d4f3574e SS |
1769 | obstack_alloc (&objfile->psymbol_obstack, SIZEOF_SECTION_OFFSETS); |
1770 | memcpy (objfile->section_offsets, offsets, SIZEOF_SECTION_OFFSETS); | |
c5aa993b JM |
1771 | objfile->num_sections = num_offsets; |
1772 | ||
1773 | /* What the hell is sym_new_init for, anyway? The concept of | |
1774 | distinguishing between the main file and additional files | |
1775 | in this way seems rather dubious. */ | |
1776 | if (objfile == symfile_objfile) | |
1777 | { | |
1778 | (*objfile->sf->sym_new_init) (objfile); | |
c906108c | 1779 | #ifdef HPUXHPPA |
c5aa993b | 1780 | RESET_HP_UX_GLOBALS (); |
c906108c | 1781 | #endif |
c5aa993b JM |
1782 | } |
1783 | ||
1784 | (*objfile->sf->sym_init) (objfile); | |
1785 | clear_complaints (1, 1); | |
1786 | /* The "mainline" parameter is a hideous hack; I think leaving it | |
1787 | zero is OK since dbxread.c also does what it needs to do if | |
1788 | objfile->global_psymbols.size is 0. */ | |
96baa820 | 1789 | (*objfile->sf->sym_read) (objfile, 0); |
c5aa993b JM |
1790 | if (!have_partial_symbols () && !have_full_symbols ()) |
1791 | { | |
1792 | wrap_here (""); | |
1793 | printf_filtered ("(no debugging symbols found)\n"); | |
1794 | wrap_here (""); | |
1795 | } | |
1796 | objfile->flags |= OBJF_SYMS; | |
1797 | ||
1798 | /* We're done reading the symbol file; finish off complaints. */ | |
1799 | clear_complaints (0, 1); | |
c906108c | 1800 | |
c5aa993b JM |
1801 | /* Getting new symbols may change our opinion about what is |
1802 | frameless. */ | |
c906108c | 1803 | |
c5aa993b | 1804 | reinit_frame_cache (); |
c906108c | 1805 | |
c5aa993b JM |
1806 | /* Discard cleanups as symbol reading was successful. */ |
1807 | discard_cleanups (old_cleanups); | |
c906108c | 1808 | |
c5aa993b JM |
1809 | /* If the mtime has changed between the time we set new_modtime |
1810 | and now, we *want* this to be out of date, so don't call stat | |
1811 | again now. */ | |
1812 | objfile->mtime = new_modtime; | |
1813 | reread_one = 1; | |
c906108c | 1814 | |
c5aa993b JM |
1815 | /* Call this after reading in a new symbol table to give target |
1816 | dependant code a crack at the new symbols. For instance, this | |
1817 | could be used to update the values of target-specific symbols GDB | |
1818 | needs to keep track of (such as _sigtramp, or whatever). */ | |
c906108c | 1819 | |
c5aa993b JM |
1820 | TARGET_SYMFILE_POSTREAD (objfile); |
1821 | } | |
c906108c SS |
1822 | } |
1823 | } | |
c906108c SS |
1824 | |
1825 | if (reread_one) | |
1826 | clear_symtab_users (); | |
1827 | } | |
c906108c SS |
1828 | \f |
1829 | ||
c5aa993b JM |
1830 | |
1831 | typedef struct | |
1832 | { | |
1833 | char *ext; | |
c906108c | 1834 | enum language lang; |
c5aa993b JM |
1835 | } |
1836 | filename_language; | |
c906108c | 1837 | |
c5aa993b | 1838 | static filename_language *filename_language_table; |
c906108c SS |
1839 | static int fl_table_size, fl_table_next; |
1840 | ||
1841 | static void | |
1842 | add_filename_language (ext, lang) | |
c5aa993b | 1843 | char *ext; |
c906108c SS |
1844 | enum language lang; |
1845 | { | |
1846 | if (fl_table_next >= fl_table_size) | |
1847 | { | |
1848 | fl_table_size += 10; | |
c5aa993b | 1849 | filename_language_table = realloc (filename_language_table, |
c906108c SS |
1850 | fl_table_size); |
1851 | } | |
1852 | ||
c5aa993b | 1853 | filename_language_table[fl_table_next].ext = strsave (ext); |
c906108c SS |
1854 | filename_language_table[fl_table_next].lang = lang; |
1855 | fl_table_next++; | |
1856 | } | |
1857 | ||
1858 | static char *ext_args; | |
1859 | ||
1860 | static void | |
1861 | set_ext_lang_command (args, from_tty) | |
1862 | char *args; | |
1863 | int from_tty; | |
1864 | { | |
1865 | int i; | |
1866 | char *cp = ext_args; | |
1867 | enum language lang; | |
1868 | ||
1869 | /* First arg is filename extension, starting with '.' */ | |
1870 | if (*cp != '.') | |
1871 | error ("'%s': Filename extension must begin with '.'", ext_args); | |
1872 | ||
1873 | /* Find end of first arg. */ | |
c5aa993b | 1874 | while (*cp && !isspace (*cp)) |
c906108c SS |
1875 | cp++; |
1876 | ||
1877 | if (*cp == '\0') | |
1878 | error ("'%s': two arguments required -- filename extension and language", | |
1879 | ext_args); | |
1880 | ||
1881 | /* Null-terminate first arg */ | |
c5aa993b | 1882 | *cp++ = '\0'; |
c906108c SS |
1883 | |
1884 | /* Find beginning of second arg, which should be a source language. */ | |
1885 | while (*cp && isspace (*cp)) | |
1886 | cp++; | |
1887 | ||
1888 | if (*cp == '\0') | |
1889 | error ("'%s': two arguments required -- filename extension and language", | |
1890 | ext_args); | |
1891 | ||
1892 | /* Lookup the language from among those we know. */ | |
1893 | lang = language_enum (cp); | |
1894 | ||
1895 | /* Now lookup the filename extension: do we already know it? */ | |
1896 | for (i = 0; i < fl_table_next; i++) | |
1897 | if (0 == strcmp (ext_args, filename_language_table[i].ext)) | |
1898 | break; | |
1899 | ||
1900 | if (i >= fl_table_next) | |
1901 | { | |
1902 | /* new file extension */ | |
1903 | add_filename_language (ext_args, lang); | |
1904 | } | |
1905 | else | |
1906 | { | |
1907 | /* redefining a previously known filename extension */ | |
1908 | ||
1909 | /* if (from_tty) */ | |
1910 | /* query ("Really make files of type %s '%s'?", */ | |
1911 | /* ext_args, language_str (lang)); */ | |
1912 | ||
1913 | free (filename_language_table[i].ext); | |
c5aa993b | 1914 | filename_language_table[i].ext = strsave (ext_args); |
c906108c SS |
1915 | filename_language_table[i].lang = lang; |
1916 | } | |
1917 | } | |
1918 | ||
1919 | static void | |
1920 | info_ext_lang_command (args, from_tty) | |
1921 | char *args; | |
c5aa993b | 1922 | int from_tty; |
c906108c SS |
1923 | { |
1924 | int i; | |
1925 | ||
1926 | printf_filtered ("Filename extensions and the languages they represent:"); | |
1927 | printf_filtered ("\n\n"); | |
1928 | for (i = 0; i < fl_table_next; i++) | |
c5aa993b JM |
1929 | printf_filtered ("\t%s\t- %s\n", |
1930 | filename_language_table[i].ext, | |
c906108c SS |
1931 | language_str (filename_language_table[i].lang)); |
1932 | } | |
1933 | ||
1934 | static void | |
1935 | init_filename_language_table () | |
1936 | { | |
1937 | if (fl_table_size == 0) /* protect against repetition */ | |
1938 | { | |
1939 | fl_table_size = 20; | |
1940 | fl_table_next = 0; | |
c5aa993b | 1941 | filename_language_table = |
c906108c | 1942 | xmalloc (fl_table_size * sizeof (*filename_language_table)); |
c5aa993b JM |
1943 | add_filename_language (".c", language_c); |
1944 | add_filename_language (".C", language_cplus); | |
1945 | add_filename_language (".cc", language_cplus); | |
1946 | add_filename_language (".cp", language_cplus); | |
1947 | add_filename_language (".cpp", language_cplus); | |
1948 | add_filename_language (".cxx", language_cplus); | |
1949 | add_filename_language (".c++", language_cplus); | |
1950 | add_filename_language (".java", language_java); | |
c906108c | 1951 | add_filename_language (".class", language_java); |
c5aa993b JM |
1952 | add_filename_language (".ch", language_chill); |
1953 | add_filename_language (".c186", language_chill); | |
1954 | add_filename_language (".c286", language_chill); | |
1955 | add_filename_language (".f", language_fortran); | |
1956 | add_filename_language (".F", language_fortran); | |
1957 | add_filename_language (".s", language_asm); | |
1958 | add_filename_language (".S", language_asm); | |
c906108c SS |
1959 | } |
1960 | } | |
1961 | ||
1962 | enum language | |
1963 | deduce_language_from_filename (filename) | |
1964 | char *filename; | |
1965 | { | |
1966 | int i; | |
1967 | char *cp; | |
1968 | ||
1969 | if (filename != NULL) | |
1970 | if ((cp = strrchr (filename, '.')) != NULL) | |
1971 | for (i = 0; i < fl_table_next; i++) | |
1972 | if (strcmp (cp, filename_language_table[i].ext) == 0) | |
1973 | return filename_language_table[i].lang; | |
1974 | ||
1975 | return language_unknown; | |
1976 | } | |
1977 | \f | |
1978 | /* allocate_symtab: | |
1979 | ||
1980 | Allocate and partly initialize a new symbol table. Return a pointer | |
1981 | to it. error() if no space. | |
1982 | ||
1983 | Caller must set these fields: | |
c5aa993b JM |
1984 | LINETABLE(symtab) |
1985 | symtab->blockvector | |
1986 | symtab->dirname | |
1987 | symtab->free_code | |
1988 | symtab->free_ptr | |
1989 | possibly free_named_symtabs (symtab->filename); | |
c906108c SS |
1990 | */ |
1991 | ||
1992 | struct symtab * | |
1993 | allocate_symtab (filename, objfile) | |
1994 | char *filename; | |
1995 | struct objfile *objfile; | |
1996 | { | |
1997 | register struct symtab *symtab; | |
1998 | ||
1999 | symtab = (struct symtab *) | |
c5aa993b | 2000 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct symtab)); |
c906108c | 2001 | memset (symtab, 0, sizeof (*symtab)); |
c5aa993b JM |
2002 | symtab->filename = obsavestring (filename, strlen (filename), |
2003 | &objfile->symbol_obstack); | |
2004 | symtab->fullname = NULL; | |
2005 | symtab->language = deduce_language_from_filename (filename); | |
2006 | symtab->debugformat = obsavestring ("unknown", 7, | |
2007 | &objfile->symbol_obstack); | |
c906108c SS |
2008 | |
2009 | /* Hook it to the objfile it comes from */ | |
2010 | ||
c5aa993b JM |
2011 | symtab->objfile = objfile; |
2012 | symtab->next = objfile->symtabs; | |
2013 | objfile->symtabs = symtab; | |
c906108c SS |
2014 | |
2015 | /* FIXME: This should go away. It is only defined for the Z8000, | |
2016 | and the Z8000 definition of this macro doesn't have anything to | |
2017 | do with the now-nonexistent EXTRA_SYMTAB_INFO macro, it's just | |
2018 | here for convenience. */ | |
2019 | #ifdef INIT_EXTRA_SYMTAB_INFO | |
2020 | INIT_EXTRA_SYMTAB_INFO (symtab); | |
2021 | #endif | |
2022 | ||
2023 | return (symtab); | |
2024 | } | |
2025 | ||
2026 | struct partial_symtab * | |
2027 | allocate_psymtab (filename, objfile) | |
2028 | char *filename; | |
2029 | struct objfile *objfile; | |
2030 | { | |
2031 | struct partial_symtab *psymtab; | |
2032 | ||
c5aa993b | 2033 | if (objfile->free_psymtabs) |
c906108c | 2034 | { |
c5aa993b JM |
2035 | psymtab = objfile->free_psymtabs; |
2036 | objfile->free_psymtabs = psymtab->next; | |
c906108c SS |
2037 | } |
2038 | else | |
2039 | psymtab = (struct partial_symtab *) | |
c5aa993b | 2040 | obstack_alloc (&objfile->psymbol_obstack, |
c906108c SS |
2041 | sizeof (struct partial_symtab)); |
2042 | ||
2043 | memset (psymtab, 0, sizeof (struct partial_symtab)); | |
c5aa993b JM |
2044 | psymtab->filename = obsavestring (filename, strlen (filename), |
2045 | &objfile->psymbol_obstack); | |
2046 | psymtab->symtab = NULL; | |
c906108c SS |
2047 | |
2048 | /* Prepend it to the psymtab list for the objfile it belongs to. | |
2049 | Psymtabs are searched in most recent inserted -> least recent | |
2050 | inserted order. */ | |
2051 | ||
c5aa993b JM |
2052 | psymtab->objfile = objfile; |
2053 | psymtab->next = objfile->psymtabs; | |
2054 | objfile->psymtabs = psymtab; | |
c906108c SS |
2055 | #if 0 |
2056 | { | |
2057 | struct partial_symtab **prev_pst; | |
c5aa993b JM |
2058 | psymtab->objfile = objfile; |
2059 | psymtab->next = NULL; | |
2060 | prev_pst = &(objfile->psymtabs); | |
c906108c | 2061 | while ((*prev_pst) != NULL) |
c5aa993b | 2062 | prev_pst = &((*prev_pst)->next); |
c906108c | 2063 | (*prev_pst) = psymtab; |
c5aa993b | 2064 | } |
c906108c | 2065 | #endif |
c5aa993b | 2066 | |
c906108c SS |
2067 | return (psymtab); |
2068 | } | |
2069 | ||
2070 | void | |
2071 | discard_psymtab (pst) | |
2072 | struct partial_symtab *pst; | |
2073 | { | |
2074 | struct partial_symtab **prev_pst; | |
2075 | ||
2076 | /* From dbxread.c: | |
2077 | Empty psymtabs happen as a result of header files which don't | |
2078 | have any symbols in them. There can be a lot of them. But this | |
2079 | check is wrong, in that a psymtab with N_SLINE entries but | |
2080 | nothing else is not empty, but we don't realize that. Fixing | |
2081 | that without slowing things down might be tricky. */ | |
2082 | ||
2083 | /* First, snip it out of the psymtab chain */ | |
2084 | ||
2085 | prev_pst = &(pst->objfile->psymtabs); | |
2086 | while ((*prev_pst) != pst) | |
2087 | prev_pst = &((*prev_pst)->next); | |
2088 | (*prev_pst) = pst->next; | |
2089 | ||
2090 | /* Next, put it on a free list for recycling */ | |
2091 | ||
2092 | pst->next = pst->objfile->free_psymtabs; | |
2093 | pst->objfile->free_psymtabs = pst; | |
2094 | } | |
c906108c | 2095 | \f |
c5aa993b | 2096 | |
c906108c SS |
2097 | /* Reset all data structures in gdb which may contain references to symbol |
2098 | table data. */ | |
2099 | ||
2100 | void | |
2101 | clear_symtab_users () | |
2102 | { | |
2103 | /* Someday, we should do better than this, by only blowing away | |
2104 | the things that really need to be blown. */ | |
2105 | clear_value_history (); | |
2106 | clear_displays (); | |
2107 | clear_internalvars (); | |
2108 | breakpoint_re_set (); | |
2109 | set_default_breakpoint (0, 0, 0, 0); | |
2110 | current_source_symtab = 0; | |
2111 | current_source_line = 0; | |
2112 | clear_pc_function_cache (); | |
11cf8741 JM |
2113 | if (target_new_objfile_hook) |
2114 | target_new_objfile_hook (NULL); | |
c906108c SS |
2115 | } |
2116 | ||
2117 | /* clear_symtab_users_once: | |
2118 | ||
2119 | This function is run after symbol reading, or from a cleanup. | |
2120 | If an old symbol table was obsoleted, the old symbol table | |
2121 | has been blown away, but the other GDB data structures that may | |
2122 | reference it have not yet been cleared or re-directed. (The old | |
2123 | symtab was zapped, and the cleanup queued, in free_named_symtab() | |
2124 | below.) | |
2125 | ||
2126 | This function can be queued N times as a cleanup, or called | |
2127 | directly; it will do all the work the first time, and then will be a | |
2128 | no-op until the next time it is queued. This works by bumping a | |
2129 | counter at queueing time. Much later when the cleanup is run, or at | |
2130 | the end of symbol processing (in case the cleanup is discarded), if | |
2131 | the queued count is greater than the "done-count", we do the work | |
2132 | and set the done-count to the queued count. If the queued count is | |
2133 | less than or equal to the done-count, we just ignore the call. This | |
2134 | is needed because reading a single .o file will often replace many | |
2135 | symtabs (one per .h file, for example), and we don't want to reset | |
2136 | the breakpoints N times in the user's face. | |
2137 | ||
2138 | The reason we both queue a cleanup, and call it directly after symbol | |
2139 | reading, is because the cleanup protects us in case of errors, but is | |
2140 | discarded if symbol reading is successful. */ | |
2141 | ||
2142 | #if 0 | |
2143 | /* FIXME: As free_named_symtabs is currently a big noop this function | |
2144 | is no longer needed. */ | |
2145 | static void | |
2146 | clear_symtab_users_once PARAMS ((void)); | |
2147 | ||
2148 | static int clear_symtab_users_queued; | |
2149 | static int clear_symtab_users_done; | |
2150 | ||
2151 | static void | |
2152 | clear_symtab_users_once () | |
2153 | { | |
2154 | /* Enforce once-per-`do_cleanups'-semantics */ | |
2155 | if (clear_symtab_users_queued <= clear_symtab_users_done) | |
2156 | return; | |
2157 | clear_symtab_users_done = clear_symtab_users_queued; | |
2158 | ||
2159 | clear_symtab_users (); | |
2160 | } | |
2161 | #endif | |
2162 | ||
2163 | /* Delete the specified psymtab, and any others that reference it. */ | |
2164 | ||
2165 | static void | |
2166 | cashier_psymtab (pst) | |
2167 | struct partial_symtab *pst; | |
2168 | { | |
2169 | struct partial_symtab *ps, *pprev = NULL; | |
2170 | int i; | |
2171 | ||
2172 | /* Find its previous psymtab in the chain */ | |
c5aa993b JM |
2173 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) |
2174 | { | |
2175 | if (ps == pst) | |
2176 | break; | |
2177 | pprev = ps; | |
2178 | } | |
c906108c | 2179 | |
c5aa993b JM |
2180 | if (ps) |
2181 | { | |
2182 | /* Unhook it from the chain. */ | |
2183 | if (ps == pst->objfile->psymtabs) | |
2184 | pst->objfile->psymtabs = ps->next; | |
2185 | else | |
2186 | pprev->next = ps->next; | |
2187 | ||
2188 | /* FIXME, we can't conveniently deallocate the entries in the | |
2189 | partial_symbol lists (global_psymbols/static_psymbols) that | |
2190 | this psymtab points to. These just take up space until all | |
2191 | the psymtabs are reclaimed. Ditto the dependencies list and | |
2192 | filename, which are all in the psymbol_obstack. */ | |
2193 | ||
2194 | /* We need to cashier any psymtab that has this one as a dependency... */ | |
2195 | again: | |
2196 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) | |
2197 | { | |
2198 | for (i = 0; i < ps->number_of_dependencies; i++) | |
2199 | { | |
2200 | if (ps->dependencies[i] == pst) | |
2201 | { | |
2202 | cashier_psymtab (ps); | |
2203 | goto again; /* Must restart, chain has been munged. */ | |
2204 | } | |
2205 | } | |
c906108c | 2206 | } |
c906108c | 2207 | } |
c906108c SS |
2208 | } |
2209 | ||
2210 | /* If a symtab or psymtab for filename NAME is found, free it along | |
2211 | with any dependent breakpoints, displays, etc. | |
2212 | Used when loading new versions of object modules with the "add-file" | |
2213 | command. This is only called on the top-level symtab or psymtab's name; | |
2214 | it is not called for subsidiary files such as .h files. | |
2215 | ||
2216 | Return value is 1 if we blew away the environment, 0 if not. | |
2217 | FIXME. The return valu appears to never be used. | |
2218 | ||
2219 | FIXME. I think this is not the best way to do this. We should | |
2220 | work on being gentler to the environment while still cleaning up | |
2221 | all stray pointers into the freed symtab. */ | |
2222 | ||
2223 | int | |
2224 | free_named_symtabs (name) | |
2225 | char *name; | |
2226 | { | |
2227 | #if 0 | |
2228 | /* FIXME: With the new method of each objfile having it's own | |
2229 | psymtab list, this function needs serious rethinking. In particular, | |
2230 | why was it ever necessary to toss psymtabs with specific compilation | |
2231 | unit filenames, as opposed to all psymtabs from a particular symbol | |
2232 | file? -- fnf | |
2233 | Well, the answer is that some systems permit reloading of particular | |
2234 | compilation units. We want to blow away any old info about these | |
2235 | compilation units, regardless of which objfiles they arrived in. --gnu. */ | |
2236 | ||
2237 | register struct symtab *s; | |
2238 | register struct symtab *prev; | |
2239 | register struct partial_symtab *ps; | |
2240 | struct blockvector *bv; | |
2241 | int blewit = 0; | |
2242 | ||
2243 | /* We only wack things if the symbol-reload switch is set. */ | |
2244 | if (!symbol_reloading) | |
2245 | return 0; | |
2246 | ||
2247 | /* Some symbol formats have trouble providing file names... */ | |
2248 | if (name == 0 || *name == '\0') | |
2249 | return 0; | |
2250 | ||
2251 | /* Look for a psymtab with the specified name. */ | |
2252 | ||
2253 | again2: | |
c5aa993b JM |
2254 | for (ps = partial_symtab_list; ps; ps = ps->next) |
2255 | { | |
2256 | if (STREQ (name, ps->filename)) | |
2257 | { | |
2258 | cashier_psymtab (ps); /* Blow it away...and its little dog, too. */ | |
2259 | goto again2; /* Must restart, chain has been munged */ | |
2260 | } | |
c906108c | 2261 | } |
c906108c SS |
2262 | |
2263 | /* Look for a symtab with the specified name. */ | |
2264 | ||
2265 | for (s = symtab_list; s; s = s->next) | |
2266 | { | |
2267 | if (STREQ (name, s->filename)) | |
2268 | break; | |
2269 | prev = s; | |
2270 | } | |
2271 | ||
2272 | if (s) | |
2273 | { | |
2274 | if (s == symtab_list) | |
2275 | symtab_list = s->next; | |
2276 | else | |
2277 | prev->next = s->next; | |
2278 | ||
2279 | /* For now, queue a delete for all breakpoints, displays, etc., whether | |
c5aa993b JM |
2280 | or not they depend on the symtab being freed. This should be |
2281 | changed so that only those data structures affected are deleted. */ | |
c906108c SS |
2282 | |
2283 | /* But don't delete anything if the symtab is empty. | |
c5aa993b JM |
2284 | This test is necessary due to a bug in "dbxread.c" that |
2285 | causes empty symtabs to be created for N_SO symbols that | |
2286 | contain the pathname of the object file. (This problem | |
2287 | has been fixed in GDB 3.9x). */ | |
c906108c SS |
2288 | |
2289 | bv = BLOCKVECTOR (s); | |
2290 | if (BLOCKVECTOR_NBLOCKS (bv) > 2 | |
2291 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) | |
2292 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK))) | |
2293 | { | |
2294 | complain (&oldsyms_complaint, name); | |
2295 | ||
2296 | clear_symtab_users_queued++; | |
2297 | make_cleanup (clear_symtab_users_once, 0); | |
2298 | blewit = 1; | |
c5aa993b JM |
2299 | } |
2300 | else | |
2301 | { | |
c906108c SS |
2302 | complain (&empty_symtab_complaint, name); |
2303 | } | |
2304 | ||
2305 | free_symtab (s); | |
2306 | } | |
2307 | else | |
2308 | { | |
2309 | /* It is still possible that some breakpoints will be affected | |
c5aa993b JM |
2310 | even though no symtab was found, since the file might have |
2311 | been compiled without debugging, and hence not be associated | |
2312 | with a symtab. In order to handle this correctly, we would need | |
2313 | to keep a list of text address ranges for undebuggable files. | |
2314 | For now, we do nothing, since this is a fairly obscure case. */ | |
c906108c SS |
2315 | ; |
2316 | } | |
2317 | ||
2318 | /* FIXME, what about the minimal symbol table? */ | |
2319 | return blewit; | |
2320 | #else | |
2321 | return (0); | |
2322 | #endif | |
2323 | } | |
2324 | \f | |
2325 | /* Allocate and partially fill a partial symtab. It will be | |
2326 | completely filled at the end of the symbol list. | |
2327 | ||
d4f3574e | 2328 | FILENAME is the name of the symbol-file we are reading from. */ |
c906108c SS |
2329 | |
2330 | struct partial_symtab * | |
2331 | start_psymtab_common (objfile, section_offsets, | |
2332 | filename, textlow, global_syms, static_syms) | |
2333 | struct objfile *objfile; | |
2334 | struct section_offsets *section_offsets; | |
2335 | char *filename; | |
2336 | CORE_ADDR textlow; | |
2337 | struct partial_symbol **global_syms; | |
2338 | struct partial_symbol **static_syms; | |
2339 | { | |
2340 | struct partial_symtab *psymtab; | |
2341 | ||
2342 | psymtab = allocate_psymtab (filename, objfile); | |
c5aa993b JM |
2343 | psymtab->section_offsets = section_offsets; |
2344 | psymtab->textlow = textlow; | |
2345 | psymtab->texthigh = psymtab->textlow; /* default */ | |
2346 | psymtab->globals_offset = global_syms - objfile->global_psymbols.list; | |
2347 | psymtab->statics_offset = static_syms - objfile->static_psymbols.list; | |
c906108c SS |
2348 | return (psymtab); |
2349 | } | |
2350 | \f | |
2351 | /* Add a symbol with a long value to a psymtab. | |
2352 | Since one arg is a struct, we pass in a ptr and deref it (sigh). */ | |
2353 | ||
2354 | void | |
2355 | add_psymbol_to_list (name, namelength, namespace, class, list, val, coreaddr, | |
2356 | language, objfile) | |
2357 | char *name; | |
2358 | int namelength; | |
2359 | namespace_enum namespace; | |
2360 | enum address_class class; | |
2361 | struct psymbol_allocation_list *list; | |
c5aa993b JM |
2362 | long val; /* Value as a long */ |
2363 | CORE_ADDR coreaddr; /* Value as a CORE_ADDR */ | |
c906108c SS |
2364 | enum language language; |
2365 | struct objfile *objfile; | |
2366 | { | |
2367 | register struct partial_symbol *psym; | |
2368 | char *buf = alloca (namelength + 1); | |
2369 | /* psymbol is static so that there will be no uninitialized gaps in the | |
2370 | structure which might contain random data, causing cache misses in | |
2371 | bcache. */ | |
2372 | static struct partial_symbol psymbol; | |
2373 | ||
2374 | /* Create local copy of the partial symbol */ | |
2375 | memcpy (buf, name, namelength); | |
2376 | buf[namelength] = '\0'; | |
2377 | SYMBOL_NAME (&psymbol) = bcache (buf, namelength + 1, &objfile->psymbol_cache); | |
2378 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ | |
2379 | if (val != 0) | |
2380 | { | |
2381 | SYMBOL_VALUE (&psymbol) = val; | |
2382 | } | |
2383 | else | |
2384 | { | |
2385 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; | |
2386 | } | |
2387 | SYMBOL_SECTION (&psymbol) = 0; | |
2388 | SYMBOL_LANGUAGE (&psymbol) = language; | |
2389 | PSYMBOL_NAMESPACE (&psymbol) = namespace; | |
2390 | PSYMBOL_CLASS (&psymbol) = class; | |
2391 | SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol, language); | |
2392 | ||
2393 | /* Stash the partial symbol away in the cache */ | |
2394 | psym = bcache (&psymbol, sizeof (struct partial_symbol), &objfile->psymbol_cache); | |
2395 | ||
2396 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ | |
2397 | if (list->next >= list->list + list->size) | |
2398 | { | |
2399 | extend_psymbol_list (list, objfile); | |
2400 | } | |
2401 | *list->next++ = psym; | |
2402 | OBJSTAT (objfile, n_psyms++); | |
2403 | } | |
2404 | ||
2405 | /* Add a symbol with a long value to a psymtab. This differs from | |
2406 | * add_psymbol_to_list above in taking both a mangled and a demangled | |
2407 | * name. */ | |
2408 | ||
2409 | void | |
2410 | add_psymbol_with_dem_name_to_list (name, namelength, dem_name, dem_namelength, | |
c5aa993b | 2411 | namespace, class, list, val, coreaddr, language, objfile) |
c906108c SS |
2412 | char *name; |
2413 | int namelength; | |
2414 | char *dem_name; | |
2415 | int dem_namelength; | |
2416 | namespace_enum namespace; | |
2417 | enum address_class class; | |
2418 | struct psymbol_allocation_list *list; | |
c5aa993b JM |
2419 | long val; /* Value as a long */ |
2420 | CORE_ADDR coreaddr; /* Value as a CORE_ADDR */ | |
c906108c SS |
2421 | enum language language; |
2422 | struct objfile *objfile; | |
2423 | { | |
2424 | register struct partial_symbol *psym; | |
2425 | char *buf = alloca (namelength + 1); | |
2426 | /* psymbol is static so that there will be no uninitialized gaps in the | |
2427 | structure which might contain random data, causing cache misses in | |
2428 | bcache. */ | |
2429 | static struct partial_symbol psymbol; | |
2430 | ||
2431 | /* Create local copy of the partial symbol */ | |
2432 | ||
2433 | memcpy (buf, name, namelength); | |
2434 | buf[namelength] = '\0'; | |
2435 | SYMBOL_NAME (&psymbol) = bcache (buf, namelength + 1, &objfile->psymbol_cache); | |
2436 | ||
2437 | buf = alloca (dem_namelength + 1); | |
2438 | memcpy (buf, dem_name, dem_namelength); | |
2439 | buf[dem_namelength] = '\0'; | |
c5aa993b | 2440 | |
c906108c SS |
2441 | switch (language) |
2442 | { | |
c5aa993b JM |
2443 | case language_c: |
2444 | case language_cplus: | |
2445 | SYMBOL_CPLUS_DEMANGLED_NAME (&psymbol) = | |
2446 | bcache (buf, dem_namelength + 1, &objfile->psymbol_cache); | |
2447 | break; | |
2448 | case language_chill: | |
2449 | SYMBOL_CHILL_DEMANGLED_NAME (&psymbol) = | |
2450 | bcache (buf, dem_namelength + 1, &objfile->psymbol_cache); | |
2451 | ||
c906108c SS |
2452 | /* FIXME What should be done for the default case? Ignoring for now. */ |
2453 | } | |
2454 | ||
2455 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ | |
2456 | if (val != 0) | |
2457 | { | |
2458 | SYMBOL_VALUE (&psymbol) = val; | |
2459 | } | |
2460 | else | |
2461 | { | |
2462 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; | |
2463 | } | |
2464 | SYMBOL_SECTION (&psymbol) = 0; | |
2465 | SYMBOL_LANGUAGE (&psymbol) = language; | |
2466 | PSYMBOL_NAMESPACE (&psymbol) = namespace; | |
2467 | PSYMBOL_CLASS (&psymbol) = class; | |
2468 | SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol, language); | |
2469 | ||
2470 | /* Stash the partial symbol away in the cache */ | |
2471 | psym = bcache (&psymbol, sizeof (struct partial_symbol), &objfile->psymbol_cache); | |
2472 | ||
2473 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ | |
2474 | if (list->next >= list->list + list->size) | |
2475 | { | |
2476 | extend_psymbol_list (list, objfile); | |
2477 | } | |
2478 | *list->next++ = psym; | |
2479 | OBJSTAT (objfile, n_psyms++); | |
2480 | } | |
2481 | ||
2482 | /* Initialize storage for partial symbols. */ | |
2483 | ||
2484 | void | |
2485 | init_psymbol_list (objfile, total_symbols) | |
2486 | struct objfile *objfile; | |
2487 | int total_symbols; | |
2488 | { | |
2489 | /* Free any previously allocated psymbol lists. */ | |
c5aa993b JM |
2490 | |
2491 | if (objfile->global_psymbols.list) | |
c906108c | 2492 | { |
c5aa993b | 2493 | mfree (objfile->md, (PTR) objfile->global_psymbols.list); |
c906108c | 2494 | } |
c5aa993b | 2495 | if (objfile->static_psymbols.list) |
c906108c | 2496 | { |
c5aa993b | 2497 | mfree (objfile->md, (PTR) objfile->static_psymbols.list); |
c906108c | 2498 | } |
c5aa993b | 2499 | |
c906108c SS |
2500 | /* Current best guess is that approximately a twentieth |
2501 | of the total symbols (in a debugging file) are global or static | |
2502 | oriented symbols */ | |
c906108c | 2503 | |
c5aa993b JM |
2504 | objfile->global_psymbols.size = total_symbols / 10; |
2505 | objfile->static_psymbols.size = total_symbols / 10; | |
2506 | ||
2507 | if (objfile->global_psymbols.size > 0) | |
c906108c | 2508 | { |
c5aa993b JM |
2509 | objfile->global_psymbols.next = |
2510 | objfile->global_psymbols.list = (struct partial_symbol **) | |
2511 | xmmalloc (objfile->md, (objfile->global_psymbols.size | |
2512 | * sizeof (struct partial_symbol *))); | |
c906108c | 2513 | } |
c5aa993b | 2514 | if (objfile->static_psymbols.size > 0) |
c906108c | 2515 | { |
c5aa993b JM |
2516 | objfile->static_psymbols.next = |
2517 | objfile->static_psymbols.list = (struct partial_symbol **) | |
2518 | xmmalloc (objfile->md, (objfile->static_psymbols.size | |
2519 | * sizeof (struct partial_symbol *))); | |
c906108c SS |
2520 | } |
2521 | } | |
2522 | ||
2523 | /* OVERLAYS: | |
2524 | The following code implements an abstraction for debugging overlay sections. | |
2525 | ||
2526 | The target model is as follows: | |
2527 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2528 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2529 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2530 | sections, one by one, from the load address into the VMA address. |
c906108c | 2531 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2532 | sections should be considered to be mapped from the VMA to the LMA. |
2533 | This information is used for symbol lookup, and memory read/write. | |
2534 | For instance, if a section has been mapped then its contents | |
2535 | should be read from the VMA, otherwise from the LMA. | |
c906108c SS |
2536 | |
2537 | Two levels of debugger support for overlays are available. One is | |
2538 | "manual", in which the debugger relies on the user to tell it which | |
2539 | overlays are currently mapped. This level of support is | |
2540 | implemented entirely in the core debugger, and the information about | |
2541 | whether a section is mapped is kept in the objfile->obj_section table. | |
2542 | ||
2543 | The second level of support is "automatic", and is only available if | |
2544 | the target-specific code provides functionality to read the target's | |
2545 | overlay mapping table, and translate its contents for the debugger | |
2546 | (by updating the mapped state information in the obj_section tables). | |
2547 | ||
2548 | The interface is as follows: | |
c5aa993b JM |
2549 | User commands: |
2550 | overlay map <name> -- tell gdb to consider this section mapped | |
2551 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2552 | overlay list -- list the sections that GDB thinks are mapped | |
2553 | overlay read-target -- get the target's state of what's mapped | |
2554 | overlay off/manual/auto -- set overlay debugging state | |
2555 | Functional interface: | |
2556 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2557 | section, return that section. | |
2558 | find_pc_overlay(pc): find any overlay section that contains | |
2559 | the pc, either in its VMA or its LMA | |
2560 | overlay_is_mapped(sect): true if overlay is marked as mapped | |
2561 | section_is_overlay(sect): true if section's VMA != LMA | |
2562 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2563 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
2564 | overlay_mapped_address(...): map an address from section's LMA to VMA | |
2565 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2566 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2567 | either in VMA or LMA depending on whether | |
2568 | the symbol's section is currently mapped | |
c906108c SS |
2569 | */ |
2570 | ||
2571 | /* Overlay debugging state: */ | |
2572 | ||
2573 | int overlay_debugging = 0; /* 0 == off, 1 == manual, -1 == auto */ | |
2574 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state */ | |
2575 | ||
2576 | /* Target vector for refreshing overlay mapped state */ | |
2577 | static void simple_overlay_update PARAMS ((struct obj_section *)); | |
c5aa993b JM |
2578 | void (*target_overlay_update) PARAMS ((struct obj_section *)) |
2579 | = simple_overlay_update; | |
c906108c SS |
2580 | |
2581 | /* Function: section_is_overlay (SECTION) | |
2582 | Returns true if SECTION has VMA not equal to LMA, ie. | |
2583 | SECTION is loaded at an address different from where it will "run". */ | |
2584 | ||
2585 | int | |
2586 | section_is_overlay (section) | |
2587 | asection *section; | |
2588 | { | |
2589 | if (overlay_debugging) | |
2590 | if (section && section->lma != 0 && | |
2591 | section->vma != section->lma) | |
2592 | return 1; | |
2593 | ||
2594 | return 0; | |
2595 | } | |
2596 | ||
2597 | /* Function: overlay_invalidate_all (void) | |
2598 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
2599 | ||
2600 | static void | |
2601 | overlay_invalidate_all () | |
2602 | { | |
c5aa993b | 2603 | struct objfile *objfile; |
c906108c SS |
2604 | struct obj_section *sect; |
2605 | ||
2606 | ALL_OBJSECTIONS (objfile, sect) | |
2607 | if (section_is_overlay (sect->the_bfd_section)) | |
c5aa993b | 2608 | sect->ovly_mapped = -1; |
c906108c SS |
2609 | } |
2610 | ||
2611 | /* Function: overlay_is_mapped (SECTION) | |
2612 | Returns true if section is an overlay, and is currently mapped. | |
2613 | Private: public access is thru function section_is_mapped. | |
2614 | ||
2615 | Access to the ovly_mapped flag is restricted to this function, so | |
2616 | that we can do automatic update. If the global flag | |
2617 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
2618 | overlay_invalidate_all. If the mapped state of the particular | |
2619 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
2620 | ||
c5aa993b | 2621 | static int |
c906108c SS |
2622 | overlay_is_mapped (osect) |
2623 | struct obj_section *osect; | |
2624 | { | |
2625 | if (osect == 0 || !section_is_overlay (osect->the_bfd_section)) | |
2626 | return 0; | |
2627 | ||
c5aa993b | 2628 | switch (overlay_debugging) |
c906108c SS |
2629 | { |
2630 | default: | |
c5aa993b JM |
2631 | case 0: |
2632 | return 0; /* overlay debugging off */ | |
c906108c SS |
2633 | case -1: /* overlay debugging automatic */ |
2634 | /* Unles there is a target_overlay_update function, | |
c5aa993b | 2635 | there's really nothing useful to do here (can't really go auto) */ |
c906108c SS |
2636 | if (target_overlay_update) |
2637 | { | |
2638 | if (overlay_cache_invalid) | |
2639 | { | |
2640 | overlay_invalidate_all (); | |
2641 | overlay_cache_invalid = 0; | |
2642 | } | |
2643 | if (osect->ovly_mapped == -1) | |
2644 | (*target_overlay_update) (osect); | |
2645 | } | |
2646 | /* fall thru to manual case */ | |
2647 | case 1: /* overlay debugging manual */ | |
2648 | return osect->ovly_mapped == 1; | |
2649 | } | |
2650 | } | |
2651 | ||
2652 | /* Function: section_is_mapped | |
2653 | Returns true if section is an overlay, and is currently mapped. */ | |
2654 | ||
2655 | int | |
2656 | section_is_mapped (section) | |
2657 | asection *section; | |
2658 | { | |
c5aa993b | 2659 | struct objfile *objfile; |
c906108c SS |
2660 | struct obj_section *osect; |
2661 | ||
2662 | if (overlay_debugging) | |
2663 | if (section && section_is_overlay (section)) | |
2664 | ALL_OBJSECTIONS (objfile, osect) | |
2665 | if (osect->the_bfd_section == section) | |
c5aa993b | 2666 | return overlay_is_mapped (osect); |
c906108c SS |
2667 | |
2668 | return 0; | |
2669 | } | |
2670 | ||
2671 | /* Function: pc_in_unmapped_range | |
2672 | If PC falls into the lma range of SECTION, return true, else false. */ | |
2673 | ||
2674 | CORE_ADDR | |
2675 | pc_in_unmapped_range (pc, section) | |
2676 | CORE_ADDR pc; | |
2677 | asection *section; | |
2678 | { | |
2679 | int size; | |
2680 | ||
2681 | if (overlay_debugging) | |
2682 | if (section && section_is_overlay (section)) | |
2683 | { | |
2684 | size = bfd_get_section_size_before_reloc (section); | |
2685 | if (section->lma <= pc && pc < section->lma + size) | |
2686 | return 1; | |
2687 | } | |
2688 | return 0; | |
2689 | } | |
2690 | ||
2691 | /* Function: pc_in_mapped_range | |
2692 | If PC falls into the vma range of SECTION, return true, else false. */ | |
2693 | ||
2694 | CORE_ADDR | |
2695 | pc_in_mapped_range (pc, section) | |
2696 | CORE_ADDR pc; | |
2697 | asection *section; | |
2698 | { | |
2699 | int size; | |
2700 | ||
2701 | if (overlay_debugging) | |
2702 | if (section && section_is_overlay (section)) | |
2703 | { | |
2704 | size = bfd_get_section_size_before_reloc (section); | |
2705 | if (section->vma <= pc && pc < section->vma + size) | |
2706 | return 1; | |
2707 | } | |
2708 | return 0; | |
2709 | } | |
2710 | ||
2711 | /* Function: overlay_unmapped_address (PC, SECTION) | |
2712 | Returns the address corresponding to PC in the unmapped (load) range. | |
2713 | May be the same as PC. */ | |
2714 | ||
2715 | CORE_ADDR | |
2716 | overlay_unmapped_address (pc, section) | |
2717 | CORE_ADDR pc; | |
2718 | asection *section; | |
2719 | { | |
2720 | if (overlay_debugging) | |
2721 | if (section && section_is_overlay (section) && | |
2722 | pc_in_mapped_range (pc, section)) | |
2723 | return pc + section->lma - section->vma; | |
2724 | ||
2725 | return pc; | |
2726 | } | |
2727 | ||
2728 | /* Function: overlay_mapped_address (PC, SECTION) | |
2729 | Returns the address corresponding to PC in the mapped (runtime) range. | |
2730 | May be the same as PC. */ | |
2731 | ||
2732 | CORE_ADDR | |
2733 | overlay_mapped_address (pc, section) | |
2734 | CORE_ADDR pc; | |
2735 | asection *section; | |
2736 | { | |
2737 | if (overlay_debugging) | |
2738 | if (section && section_is_overlay (section) && | |
2739 | pc_in_unmapped_range (pc, section)) | |
2740 | return pc + section->vma - section->lma; | |
2741 | ||
2742 | return pc; | |
2743 | } | |
2744 | ||
2745 | ||
2746 | /* Function: symbol_overlayed_address | |
2747 | Return one of two addresses (relative to the VMA or to the LMA), | |
2748 | depending on whether the section is mapped or not. */ | |
2749 | ||
c5aa993b | 2750 | CORE_ADDR |
c906108c SS |
2751 | symbol_overlayed_address (address, section) |
2752 | CORE_ADDR address; | |
2753 | asection *section; | |
2754 | { | |
2755 | if (overlay_debugging) | |
2756 | { | |
2757 | /* If the symbol has no section, just return its regular address. */ | |
2758 | if (section == 0) | |
2759 | return address; | |
2760 | /* If the symbol's section is not an overlay, just return its address */ | |
2761 | if (!section_is_overlay (section)) | |
2762 | return address; | |
2763 | /* If the symbol's section is mapped, just return its address */ | |
2764 | if (section_is_mapped (section)) | |
2765 | return address; | |
2766 | /* | |
2767 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
2768 | * then return its LOADED address rather than its vma address!! | |
2769 | */ | |
2770 | return overlay_unmapped_address (address, section); | |
2771 | } | |
2772 | return address; | |
2773 | } | |
2774 | ||
2775 | /* Function: find_pc_overlay (PC) | |
2776 | Return the best-match overlay section for PC: | |
2777 | If PC matches a mapped overlay section's VMA, return that section. | |
2778 | Else if PC matches an unmapped section's VMA, return that section. | |
2779 | Else if PC matches an unmapped section's LMA, return that section. */ | |
2780 | ||
2781 | asection * | |
2782 | find_pc_overlay (pc) | |
2783 | CORE_ADDR pc; | |
2784 | { | |
c5aa993b | 2785 | struct objfile *objfile; |
c906108c SS |
2786 | struct obj_section *osect, *best_match = NULL; |
2787 | ||
2788 | if (overlay_debugging) | |
2789 | ALL_OBJSECTIONS (objfile, osect) | |
2790 | if (section_is_overlay (osect->the_bfd_section)) | |
c5aa993b JM |
2791 | { |
2792 | if (pc_in_mapped_range (pc, osect->the_bfd_section)) | |
2793 | { | |
2794 | if (overlay_is_mapped (osect)) | |
2795 | return osect->the_bfd_section; | |
2796 | else | |
2797 | best_match = osect; | |
2798 | } | |
2799 | else if (pc_in_unmapped_range (pc, osect->the_bfd_section)) | |
2800 | best_match = osect; | |
2801 | } | |
c906108c SS |
2802 | return best_match ? best_match->the_bfd_section : NULL; |
2803 | } | |
2804 | ||
2805 | /* Function: find_pc_mapped_section (PC) | |
2806 | If PC falls into the VMA address range of an overlay section that is | |
2807 | currently marked as MAPPED, return that section. Else return NULL. */ | |
2808 | ||
2809 | asection * | |
2810 | find_pc_mapped_section (pc) | |
2811 | CORE_ADDR pc; | |
2812 | { | |
c5aa993b | 2813 | struct objfile *objfile; |
c906108c SS |
2814 | struct obj_section *osect; |
2815 | ||
2816 | if (overlay_debugging) | |
2817 | ALL_OBJSECTIONS (objfile, osect) | |
2818 | if (pc_in_mapped_range (pc, osect->the_bfd_section) && | |
2819 | overlay_is_mapped (osect)) | |
c5aa993b | 2820 | return osect->the_bfd_section; |
c906108c SS |
2821 | |
2822 | return NULL; | |
2823 | } | |
2824 | ||
2825 | /* Function: list_overlays_command | |
2826 | Print a list of mapped sections and their PC ranges */ | |
2827 | ||
2828 | void | |
2829 | list_overlays_command (args, from_tty) | |
2830 | char *args; | |
2831 | int from_tty; | |
2832 | { | |
c5aa993b JM |
2833 | int nmapped = 0; |
2834 | struct objfile *objfile; | |
c906108c SS |
2835 | struct obj_section *osect; |
2836 | ||
2837 | if (overlay_debugging) | |
2838 | ALL_OBJSECTIONS (objfile, osect) | |
2839 | if (overlay_is_mapped (osect)) | |
c5aa993b JM |
2840 | { |
2841 | const char *name; | |
2842 | bfd_vma lma, vma; | |
2843 | int size; | |
2844 | ||
2845 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
2846 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
2847 | size = bfd_get_section_size_before_reloc (osect->the_bfd_section); | |
2848 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); | |
2849 | ||
2850 | printf_filtered ("Section %s, loaded at ", name); | |
2851 | print_address_numeric (lma, 1, gdb_stdout); | |
2852 | puts_filtered (" - "); | |
2853 | print_address_numeric (lma + size, 1, gdb_stdout); | |
2854 | printf_filtered (", mapped at "); | |
2855 | print_address_numeric (vma, 1, gdb_stdout); | |
2856 | puts_filtered (" - "); | |
2857 | print_address_numeric (vma + size, 1, gdb_stdout); | |
2858 | puts_filtered ("\n"); | |
2859 | ||
2860 | nmapped++; | |
2861 | } | |
c906108c SS |
2862 | if (nmapped == 0) |
2863 | printf_filtered ("No sections are mapped.\n"); | |
2864 | } | |
2865 | ||
2866 | /* Function: map_overlay_command | |
2867 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
2868 | ||
2869 | void | |
2870 | map_overlay_command (args, from_tty) | |
2871 | char *args; | |
c5aa993b | 2872 | int from_tty; |
c906108c | 2873 | { |
c5aa993b JM |
2874 | struct objfile *objfile, *objfile2; |
2875 | struct obj_section *sec, *sec2; | |
2876 | asection *bfdsec; | |
c906108c SS |
2877 | |
2878 | if (!overlay_debugging) | |
2879 | error ("Overlay debugging not enabled. Use the 'OVERLAY ON' command."); | |
2880 | ||
2881 | if (args == 0 || *args == 0) | |
2882 | error ("Argument required: name of an overlay section"); | |
2883 | ||
2884 | /* First, find a section matching the user supplied argument */ | |
2885 | ALL_OBJSECTIONS (objfile, sec) | |
2886 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
2887 | { |
2888 | /* Now, check to see if the section is an overlay. */ | |
2889 | bfdsec = sec->the_bfd_section; | |
2890 | if (!section_is_overlay (bfdsec)) | |
2891 | continue; /* not an overlay section */ | |
2892 | ||
2893 | /* Mark the overlay as "mapped" */ | |
2894 | sec->ovly_mapped = 1; | |
2895 | ||
2896 | /* Next, make a pass and unmap any sections that are | |
2897 | overlapped by this new section: */ | |
2898 | ALL_OBJSECTIONS (objfile2, sec2) | |
2899 | if (sec2->ovly_mapped && | |
2900 | sec != sec2 && | |
2901 | sec->the_bfd_section != sec2->the_bfd_section && | |
2902 | (pc_in_mapped_range (sec2->addr, sec->the_bfd_section) || | |
2903 | pc_in_mapped_range (sec2->endaddr, sec->the_bfd_section))) | |
2904 | { | |
2905 | if (info_verbose) | |
2906 | printf_filtered ("Note: section %s unmapped by overlap\n", | |
2907 | bfd_section_name (objfile->obfd, | |
2908 | sec2->the_bfd_section)); | |
2909 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2 */ | |
2910 | } | |
2911 | return; | |
2912 | } | |
c906108c SS |
2913 | error ("No overlay section called %s", args); |
2914 | } | |
2915 | ||
2916 | /* Function: unmap_overlay_command | |
2917 | Mark the overlay section as unmapped | |
2918 | (ie. resident in its LMA address range, rather than the VMA range). */ | |
2919 | ||
2920 | void | |
2921 | unmap_overlay_command (args, from_tty) | |
2922 | char *args; | |
c5aa993b | 2923 | int from_tty; |
c906108c | 2924 | { |
c5aa993b | 2925 | struct objfile *objfile; |
c906108c SS |
2926 | struct obj_section *sec; |
2927 | ||
2928 | if (!overlay_debugging) | |
2929 | error ("Overlay debugging not enabled. Use the 'OVERLAY ON' command."); | |
2930 | ||
2931 | if (args == 0 || *args == 0) | |
2932 | error ("Argument required: name of an overlay section"); | |
2933 | ||
2934 | /* First, find a section matching the user supplied argument */ | |
2935 | ALL_OBJSECTIONS (objfile, sec) | |
2936 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
2937 | { |
2938 | if (!sec->ovly_mapped) | |
2939 | error ("Section %s is not mapped", args); | |
2940 | sec->ovly_mapped = 0; | |
2941 | return; | |
2942 | } | |
c906108c SS |
2943 | error ("No overlay section called %s", args); |
2944 | } | |
2945 | ||
2946 | /* Function: overlay_auto_command | |
2947 | A utility command to turn on overlay debugging. | |
2948 | Possibly this should be done via a set/show command. */ | |
2949 | ||
2950 | static void | |
2951 | overlay_auto_command (args, from_tty) | |
2952 | char *args; | |
c5aa993b | 2953 | int from_tty; |
c906108c SS |
2954 | { |
2955 | overlay_debugging = -1; | |
2956 | if (info_verbose) | |
2957 | printf_filtered ("Automatic overlay debugging enabled."); | |
2958 | } | |
2959 | ||
2960 | /* Function: overlay_manual_command | |
2961 | A utility command to turn on overlay debugging. | |
2962 | Possibly this should be done via a set/show command. */ | |
2963 | ||
2964 | static void | |
2965 | overlay_manual_command (args, from_tty) | |
2966 | char *args; | |
c5aa993b | 2967 | int from_tty; |
c906108c SS |
2968 | { |
2969 | overlay_debugging = 1; | |
2970 | if (info_verbose) | |
2971 | printf_filtered ("Overlay debugging enabled."); | |
2972 | } | |
2973 | ||
2974 | /* Function: overlay_off_command | |
2975 | A utility command to turn on overlay debugging. | |
2976 | Possibly this should be done via a set/show command. */ | |
2977 | ||
2978 | static void | |
2979 | overlay_off_command (args, from_tty) | |
2980 | char *args; | |
c5aa993b | 2981 | int from_tty; |
c906108c | 2982 | { |
c5aa993b | 2983 | overlay_debugging = 0; |
c906108c SS |
2984 | if (info_verbose) |
2985 | printf_filtered ("Overlay debugging disabled."); | |
2986 | } | |
2987 | ||
2988 | static void | |
2989 | overlay_load_command (args, from_tty) | |
2990 | char *args; | |
c5aa993b | 2991 | int from_tty; |
c906108c SS |
2992 | { |
2993 | if (target_overlay_update) | |
2994 | (*target_overlay_update) (NULL); | |
2995 | else | |
2996 | error ("This target does not know how to read its overlay state."); | |
2997 | } | |
2998 | ||
2999 | /* Function: overlay_command | |
3000 | A place-holder for a mis-typed command */ | |
3001 | ||
3002 | /* Command list chain containing all defined "overlay" subcommands. */ | |
3003 | struct cmd_list_element *overlaylist; | |
3004 | ||
3005 | static void | |
3006 | overlay_command (args, from_tty) | |
3007 | char *args; | |
3008 | int from_tty; | |
3009 | { | |
c5aa993b | 3010 | printf_unfiltered |
c906108c SS |
3011 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
3012 | help_list (overlaylist, "overlay ", -1, gdb_stdout); | |
3013 | } | |
3014 | ||
3015 | ||
3016 | /* Target Overlays for the "Simplest" overlay manager: | |
3017 | ||
3018 | This is GDB's default target overlay layer. It works with the | |
3019 | minimal overlay manager supplied as an example by Cygnus. The | |
3020 | entry point is via a function pointer "target_overlay_update", | |
3021 | so targets that use a different runtime overlay manager can | |
3022 | substitute their own overlay_update function and take over the | |
3023 | function pointer. | |
3024 | ||
3025 | The overlay_update function pokes around in the target's data structures | |
3026 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3027 | this information. | |
3028 | ||
3029 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3030 | unsigned _novlys; /# number of overlay sections #/ |
3031 | unsigned _ovly_table[_novlys][4] = { | |
3032 | {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/ | |
3033 | {..., ..., ..., ...}, | |
3034 | } | |
3035 | unsigned _novly_regions; /# number of overlay regions #/ | |
3036 | unsigned _ovly_region_table[_novly_regions][3] = { | |
3037 | {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ | |
3038 | {..., ..., ...}, | |
3039 | } | |
c906108c SS |
3040 | These functions will attempt to update GDB's mappedness state in the |
3041 | symbol section table, based on the target's mappedness state. | |
3042 | ||
3043 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3044 | attempt to detect when the cached copy is invalidated. The main | |
3045 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3046 | the cached table and re-reads only the entry for that section from | |
3047 | the target (whenever possible). | |
3048 | */ | |
3049 | ||
3050 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3051 | static unsigned (*cache_ovly_table)[4] = 0; |
c906108c | 3052 | #if 0 |
c5aa993b | 3053 | static unsigned (*cache_ovly_region_table)[3] = 0; |
c906108c | 3054 | #endif |
c5aa993b | 3055 | static unsigned cache_novlys = 0; |
c906108c | 3056 | #if 0 |
c5aa993b | 3057 | static unsigned cache_novly_regions = 0; |
c906108c SS |
3058 | #endif |
3059 | static CORE_ADDR cache_ovly_table_base = 0; | |
3060 | #if 0 | |
3061 | static CORE_ADDR cache_ovly_region_table_base = 0; | |
3062 | #endif | |
c5aa993b JM |
3063 | enum ovly_index |
3064 | { | |
3065 | VMA, SIZE, LMA, MAPPED | |
3066 | }; | |
c906108c SS |
3067 | #define TARGET_LONG_BYTES (TARGET_LONG_BIT / TARGET_CHAR_BIT) |
3068 | ||
3069 | /* Throw away the cached copy of _ovly_table */ | |
3070 | static void | |
3071 | simple_free_overlay_table () | |
3072 | { | |
3073 | if (cache_ovly_table) | |
c5aa993b JM |
3074 | free (cache_ovly_table); |
3075 | cache_novlys = 0; | |
c906108c SS |
3076 | cache_ovly_table = NULL; |
3077 | cache_ovly_table_base = 0; | |
3078 | } | |
3079 | ||
3080 | #if 0 | |
3081 | /* Throw away the cached copy of _ovly_region_table */ | |
3082 | static void | |
3083 | simple_free_overlay_region_table () | |
3084 | { | |
3085 | if (cache_ovly_region_table) | |
c5aa993b JM |
3086 | free (cache_ovly_region_table); |
3087 | cache_novly_regions = 0; | |
c906108c SS |
3088 | cache_ovly_region_table = NULL; |
3089 | cache_ovly_region_table_base = 0; | |
3090 | } | |
3091 | #endif | |
3092 | ||
3093 | /* Read an array of ints from the target into a local buffer. | |
3094 | Convert to host order. int LEN is number of ints */ | |
3095 | static void | |
3096 | read_target_long_array (memaddr, myaddr, len) | |
c5aa993b | 3097 | CORE_ADDR memaddr; |
c906108c | 3098 | unsigned int *myaddr; |
c5aa993b | 3099 | int len; |
c906108c SS |
3100 | { |
3101 | char *buf = alloca (len * TARGET_LONG_BYTES); | |
c5aa993b | 3102 | int i; |
c906108c SS |
3103 | |
3104 | read_memory (memaddr, buf, len * TARGET_LONG_BYTES); | |
3105 | for (i = 0; i < len; i++) | |
c5aa993b | 3106 | myaddr[i] = extract_unsigned_integer (TARGET_LONG_BYTES * i + buf, |
c906108c SS |
3107 | TARGET_LONG_BYTES); |
3108 | } | |
3109 | ||
3110 | /* Find and grab a copy of the target _ovly_table | |
3111 | (and _novlys, which is needed for the table's size) */ | |
c5aa993b | 3112 | static int |
c906108c SS |
3113 | simple_read_overlay_table () |
3114 | { | |
3115 | struct minimal_symbol *msym; | |
3116 | ||
3117 | simple_free_overlay_table (); | |
3118 | msym = lookup_minimal_symbol ("_novlys", 0, 0); | |
3119 | if (msym != NULL) | |
3120 | cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (msym), 4); | |
c5aa993b JM |
3121 | else |
3122 | return 0; /* failure */ | |
3123 | cache_ovly_table = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); | |
c906108c SS |
3124 | if (cache_ovly_table != NULL) |
3125 | { | |
3126 | msym = lookup_minimal_symbol ("_ovly_table", 0, 0); | |
3127 | if (msym != NULL) | |
3128 | { | |
3129 | cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (msym); | |
c5aa993b JM |
3130 | read_target_long_array (cache_ovly_table_base, |
3131 | (int *) cache_ovly_table, | |
c906108c SS |
3132 | cache_novlys * 4); |
3133 | } | |
c5aa993b JM |
3134 | else |
3135 | return 0; /* failure */ | |
c906108c | 3136 | } |
c5aa993b JM |
3137 | else |
3138 | return 0; /* failure */ | |
3139 | return 1; /* SUCCESS */ | |
c906108c SS |
3140 | } |
3141 | ||
3142 | #if 0 | |
3143 | /* Find and grab a copy of the target _ovly_region_table | |
3144 | (and _novly_regions, which is needed for the table's size) */ | |
c5aa993b | 3145 | static int |
c906108c SS |
3146 | simple_read_overlay_region_table () |
3147 | { | |
3148 | struct minimal_symbol *msym; | |
3149 | ||
3150 | simple_free_overlay_region_table (); | |
3151 | msym = lookup_minimal_symbol ("_novly_regions", 0, 0); | |
3152 | if (msym != NULL) | |
3153 | cache_novly_regions = read_memory_integer (SYMBOL_VALUE_ADDRESS (msym), 4); | |
c5aa993b JM |
3154 | else |
3155 | return 0; /* failure */ | |
c906108c SS |
3156 | cache_ovly_region_table = (void *) xmalloc (cache_novly_regions * 12); |
3157 | if (cache_ovly_region_table != NULL) | |
3158 | { | |
3159 | msym = lookup_minimal_symbol ("_ovly_region_table", 0, 0); | |
3160 | if (msym != NULL) | |
3161 | { | |
3162 | cache_ovly_region_table_base = SYMBOL_VALUE_ADDRESS (msym); | |
c5aa993b JM |
3163 | read_target_long_array (cache_ovly_region_table_base, |
3164 | (int *) cache_ovly_region_table, | |
c906108c SS |
3165 | cache_novly_regions * 3); |
3166 | } | |
c5aa993b JM |
3167 | else |
3168 | return 0; /* failure */ | |
c906108c | 3169 | } |
c5aa993b JM |
3170 | else |
3171 | return 0; /* failure */ | |
3172 | return 1; /* SUCCESS */ | |
c906108c SS |
3173 | } |
3174 | #endif | |
3175 | ||
3176 | /* Function: simple_overlay_update_1 | |
3177 | A helper function for simple_overlay_update. Assuming a cached copy | |
3178 | of _ovly_table exists, look through it to find an entry whose vma, | |
3179 | lma and size match those of OSECT. Re-read the entry and make sure | |
3180 | it still matches OSECT (else the table may no longer be valid). | |
3181 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3182 | success, 0 for failure. */ | |
3183 | ||
3184 | static int | |
3185 | simple_overlay_update_1 (osect) | |
3186 | struct obj_section *osect; | |
3187 | { | |
3188 | int i, size; | |
3189 | ||
3190 | size = bfd_get_section_size_before_reloc (osect->the_bfd_section); | |
3191 | for (i = 0; i < cache_novlys; i++) | |
c5aa993b JM |
3192 | if (cache_ovly_table[i][VMA] == osect->the_bfd_section->vma && |
3193 | cache_ovly_table[i][LMA] == osect->the_bfd_section->lma /* && | |
3194 | cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3195 | { |
3196 | read_target_long_array (cache_ovly_table_base + i * TARGET_LONG_BYTES, | |
3197 | (int *) cache_ovly_table[i], 4); | |
c5aa993b JM |
3198 | if (cache_ovly_table[i][VMA] == osect->the_bfd_section->vma && |
3199 | cache_ovly_table[i][LMA] == osect->the_bfd_section->lma /* && | |
3200 | cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3201 | { |
3202 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3203 | return 1; | |
3204 | } | |
c5aa993b | 3205 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3206 | return 0; |
3207 | } | |
3208 | return 0; | |
3209 | } | |
3210 | ||
3211 | /* Function: simple_overlay_update | |
3212 | If OSECT is NULL, then update all sections' mapped state | |
3213 | (after re-reading the entire target _ovly_table). | |
3214 | If OSECT is non-NULL, then try to find a matching entry in the | |
3215 | cached ovly_table and update only OSECT's mapped state. | |
3216 | If a cached entry can't be found or the cache isn't valid, then | |
3217 | re-read the entire cache, and go ahead and update all sections. */ | |
3218 | ||
3219 | static void | |
3220 | simple_overlay_update (osect) | |
3221 | struct obj_section *osect; | |
3222 | { | |
c5aa993b | 3223 | struct objfile *objfile; |
c906108c SS |
3224 | |
3225 | /* Were we given an osect to look up? NULL means do all of them. */ | |
3226 | if (osect) | |
3227 | /* Have we got a cached copy of the target's overlay table? */ | |
3228 | if (cache_ovly_table != NULL) | |
3229 | /* Does its cached location match what's currently in the symtab? */ | |
c5aa993b | 3230 | if (cache_ovly_table_base == |
c906108c SS |
3231 | SYMBOL_VALUE_ADDRESS (lookup_minimal_symbol ("_ovly_table", 0, 0))) |
3232 | /* Then go ahead and try to look up this single section in the cache */ | |
3233 | if (simple_overlay_update_1 (osect)) | |
3234 | /* Found it! We're done. */ | |
3235 | return; | |
3236 | ||
3237 | /* Cached table no good: need to read the entire table anew. | |
3238 | Or else we want all the sections, in which case it's actually | |
3239 | more efficient to read the whole table in one block anyway. */ | |
3240 | ||
3241 | if (simple_read_overlay_table () == 0) /* read failed? No table? */ | |
3242 | { | |
3243 | warning ("Failed to read the target overlay mapping table."); | |
3244 | return; | |
3245 | } | |
3246 | /* Now may as well update all sections, even if only one was requested. */ | |
3247 | ALL_OBJSECTIONS (objfile, osect) | |
3248 | if (section_is_overlay (osect->the_bfd_section)) | |
c5aa993b JM |
3249 | { |
3250 | int i, size; | |
3251 | ||
3252 | size = bfd_get_section_size_before_reloc (osect->the_bfd_section); | |
3253 | for (i = 0; i < cache_novlys; i++) | |
3254 | if (cache_ovly_table[i][VMA] == osect->the_bfd_section->vma && | |
3255 | cache_ovly_table[i][LMA] == osect->the_bfd_section->lma /* && | |
3256 | cache_ovly_table[i][SIZE] == size */ ) | |
3257 | { /* obj_section matches i'th entry in ovly_table */ | |
3258 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3259 | break; /* finished with inner for loop: break out */ | |
3260 | } | |
3261 | } | |
c906108c SS |
3262 | } |
3263 | ||
3264 | ||
3265 | void | |
3266 | _initialize_symfile () | |
3267 | { | |
3268 | struct cmd_list_element *c; | |
c5aa993b | 3269 | |
c906108c | 3270 | c = add_cmd ("symbol-file", class_files, symbol_file_command, |
c5aa993b | 3271 | "Load symbol table from executable file FILE.\n\ |
c906108c SS |
3272 | The `file' command can also load symbol tables, as well as setting the file\n\ |
3273 | to execute.", &cmdlist); | |
3274 | c->completer = filename_completer; | |
3275 | ||
3276 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, | |
2acceee2 JM |
3277 | "Usage: add-symbol-file FILE ADDR [DATA_ADDR [BSS_ADDR]]\n\ |
3278 | or: add-symbol-file FILE -T<SECT> <SECT_ADDR> -T<SECT> <SECT_ADDR> ...\n\ | |
c906108c | 3279 | Load the symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
2acceee2 JM |
3280 | ADDR is the starting address of the file's text.\n\ |
3281 | The optional arguments, DATA_ADDR and BSS_ADDR, should be specified\n\ | |
3282 | if the data and bss segments are not contiguous with the text.\n\ | |
3283 | For complicated cases, SECT is a section name to be loaded at SECT_ADDR.", | |
c906108c SS |
3284 | &cmdlist); |
3285 | c->completer = filename_completer; | |
3286 | ||
3287 | c = add_cmd ("add-shared-symbol-files", class_files, | |
3288 | add_shared_symbol_files_command, | |
3289 | "Load the symbols from shared objects in the dynamic linker's link map.", | |
c5aa993b | 3290 | &cmdlist); |
c906108c SS |
3291 | c = add_alias_cmd ("assf", "add-shared-symbol-files", class_files, 1, |
3292 | &cmdlist); | |
3293 | ||
3294 | c = add_cmd ("load", class_files, load_command, | |
c5aa993b | 3295 | "Dynamically load FILE into the running program, and record its symbols\n\ |
c906108c SS |
3296 | for access from GDB.", &cmdlist); |
3297 | c->completer = filename_completer; | |
3298 | ||
3299 | add_show_from_set | |
3300 | (add_set_cmd ("symbol-reloading", class_support, var_boolean, | |
c5aa993b JM |
3301 | (char *) &symbol_reloading, |
3302 | "Set dynamic symbol table reloading multiple times in one run.", | |
c906108c SS |
3303 | &setlist), |
3304 | &showlist); | |
3305 | ||
c5aa993b JM |
3306 | add_prefix_cmd ("overlay", class_support, overlay_command, |
3307 | "Commands for debugging overlays.", &overlaylist, | |
c906108c SS |
3308 | "overlay ", 0, &cmdlist); |
3309 | ||
3310 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3311 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3312 | ||
c5aa993b | 3313 | add_cmd ("map-overlay", class_support, map_overlay_command, |
c906108c SS |
3314 | "Assert that an overlay section is mapped.", &overlaylist); |
3315 | ||
c5aa993b | 3316 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
c906108c SS |
3317 | "Assert that an overlay section is unmapped.", &overlaylist); |
3318 | ||
c5aa993b | 3319 | add_cmd ("list-overlays", class_support, list_overlays_command, |
c906108c SS |
3320 | "List mappings of overlay sections.", &overlaylist); |
3321 | ||
c5aa993b | 3322 | add_cmd ("manual", class_support, overlay_manual_command, |
c906108c | 3323 | "Enable overlay debugging.", &overlaylist); |
c5aa993b | 3324 | add_cmd ("off", class_support, overlay_off_command, |
c906108c | 3325 | "Disable overlay debugging.", &overlaylist); |
c5aa993b | 3326 | add_cmd ("auto", class_support, overlay_auto_command, |
c906108c | 3327 | "Enable automatic overlay debugging.", &overlaylist); |
c5aa993b | 3328 | add_cmd ("load-target", class_support, overlay_load_command, |
c906108c SS |
3329 | "Read the overlay mapping state from the target.", &overlaylist); |
3330 | ||
3331 | /* Filename extension to source language lookup table: */ | |
3332 | init_filename_language_table (); | |
3333 | c = add_set_cmd ("extension-language", class_files, var_string_noescape, | |
c5aa993b | 3334 | (char *) &ext_args, |
c906108c SS |
3335 | "Set mapping between filename extension and source language.\n\ |
3336 | Usage: set extension-language .foo bar", | |
c5aa993b | 3337 | &setlist); |
c906108c SS |
3338 | c->function.cfunc = set_ext_lang_command; |
3339 | ||
c5aa993b | 3340 | add_info ("extensions", info_ext_lang_command, |
c906108c | 3341 | "All filename extensions associated with a source language."); |
917317f4 JM |
3342 | |
3343 | add_show_from_set | |
3344 | (add_set_cmd ("download-write-size", class_obscure, | |
3345 | var_integer, (char *) &download_write_size, | |
3346 | "Set the write size used when downloading a program.\n" | |
3347 | "Only used when downloading a program onto a remote\n" | |
3348 | "target. Specify zero, or a negative value, to disable\n" | |
3349 | "blocked writes. The actual size of each transfer is also\n" | |
3350 | "limited by the size of the target packet and the memory\n" | |
3351 | "cache.\n", | |
3352 | &setlist), | |
3353 | &showlist); | |
c906108c | 3354 | } |