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" | |
c5f0f3d0 | 39 | #include "completer.h" |
c906108c SS |
40 | |
41 | #include <assert.h> | |
42 | #include <sys/types.h> | |
43 | #include <fcntl.h> | |
44 | #include "gdb_string.h" | |
45 | #include "gdb_stat.h" | |
46 | #include <ctype.h> | |
47 | #include <time.h> | |
c906108c SS |
48 | |
49 | #ifndef O_BINARY | |
50 | #define O_BINARY 0 | |
51 | #endif | |
52 | ||
53 | #ifdef HPUXHPPA | |
54 | ||
55 | /* Some HP-UX related globals to clear when a new "main" | |
56 | symbol file is loaded. HP-specific. */ | |
57 | ||
58 | extern int hp_som_som_object_present; | |
59 | extern int hp_cxx_exception_support_initialized; | |
60 | #define RESET_HP_UX_GLOBALS() do {\ | |
61 | hp_som_som_object_present = 0; /* indicates HP-compiled code */ \ | |
62 | hp_cxx_exception_support_initialized = 0; /* must reinitialize exception stuff */ \ | |
63 | } while (0) | |
64 | #endif | |
65 | ||
917317f4 | 66 | int (*ui_load_progress_hook) (const char *section, unsigned long num); |
c2d11a7d JM |
67 | void (*show_load_progress) (const char *section, |
68 | unsigned long section_sent, | |
69 | unsigned long section_size, | |
70 | unsigned long total_sent, | |
71 | unsigned long total_size); | |
507f3c78 KB |
72 | void (*pre_add_symbol_hook) (char *); |
73 | void (*post_add_symbol_hook) (void); | |
74 | void (*target_new_objfile_hook) (struct objfile *); | |
c906108c | 75 | |
74b7792f AC |
76 | static void clear_symtab_users_cleanup (void *ignore); |
77 | ||
c906108c | 78 | /* Global variables owned by this file */ |
c5aa993b | 79 | int readnow_symbol_files; /* Read full symbols immediately */ |
c906108c | 80 | |
c5aa993b JM |
81 | struct complaint oldsyms_complaint = |
82 | { | |
c906108c SS |
83 | "Replacing old symbols for `%s'", 0, 0 |
84 | }; | |
85 | ||
c5aa993b JM |
86 | struct complaint empty_symtab_complaint = |
87 | { | |
c906108c SS |
88 | "Empty symbol table found for `%s'", 0, 0 |
89 | }; | |
90 | ||
2acceee2 JM |
91 | struct complaint unknown_option_complaint = |
92 | { | |
93 | "Unknown option `%s' ignored", 0, 0 | |
94 | }; | |
95 | ||
c906108c SS |
96 | /* External variables and functions referenced. */ |
97 | ||
98 | extern int info_verbose; | |
99 | ||
a14ed312 | 100 | extern void report_transfer_performance (unsigned long, time_t, time_t); |
c906108c SS |
101 | |
102 | /* Functions this file defines */ | |
103 | ||
104 | #if 0 | |
a14ed312 KB |
105 | static int simple_read_overlay_region_table (void); |
106 | static void simple_free_overlay_region_table (void); | |
c906108c SS |
107 | #endif |
108 | ||
a14ed312 | 109 | static void set_initial_language (void); |
c906108c | 110 | |
a14ed312 | 111 | static void load_command (char *, int); |
c906108c | 112 | |
a14ed312 | 113 | static void add_symbol_file_command (char *, int); |
c906108c | 114 | |
a14ed312 | 115 | static void add_shared_symbol_files_command (char *, int); |
c906108c | 116 | |
a14ed312 | 117 | static void cashier_psymtab (struct partial_symtab *); |
c906108c | 118 | |
a14ed312 | 119 | static int compare_psymbols (const void *, const void *); |
c906108c | 120 | |
a14ed312 | 121 | static int compare_symbols (const void *, const void *); |
c906108c | 122 | |
a14ed312 | 123 | bfd *symfile_bfd_open (char *); |
c906108c | 124 | |
a14ed312 | 125 | static void find_sym_fns (struct objfile *); |
c906108c | 126 | |
a14ed312 | 127 | static void decrement_reading_symtab (void *); |
c906108c | 128 | |
a14ed312 | 129 | static void overlay_invalidate_all (void); |
c906108c | 130 | |
a14ed312 | 131 | static int overlay_is_mapped (struct obj_section *); |
c906108c | 132 | |
a14ed312 | 133 | void list_overlays_command (char *, int); |
c906108c | 134 | |
a14ed312 | 135 | void map_overlay_command (char *, int); |
c906108c | 136 | |
a14ed312 | 137 | void unmap_overlay_command (char *, int); |
c906108c | 138 | |
a14ed312 | 139 | static void overlay_auto_command (char *, int); |
c906108c | 140 | |
a14ed312 | 141 | static void overlay_manual_command (char *, int); |
c906108c | 142 | |
a14ed312 | 143 | static void overlay_off_command (char *, int); |
c906108c | 144 | |
a14ed312 | 145 | static void overlay_load_command (char *, int); |
c906108c | 146 | |
a14ed312 | 147 | static void overlay_command (char *, int); |
c906108c | 148 | |
a14ed312 | 149 | static void simple_free_overlay_table (void); |
c906108c | 150 | |
a14ed312 | 151 | static void read_target_long_array (CORE_ADDR, unsigned int *, int); |
c906108c | 152 | |
a14ed312 | 153 | static int simple_read_overlay_table (void); |
c906108c | 154 | |
a14ed312 | 155 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 156 | |
a14ed312 | 157 | static void add_filename_language (char *ext, enum language lang); |
392a587b | 158 | |
a14ed312 | 159 | static void set_ext_lang_command (char *args, int from_tty); |
392a587b | 160 | |
a14ed312 | 161 | static void info_ext_lang_command (char *args, int from_tty); |
392a587b | 162 | |
a14ed312 | 163 | static void init_filename_language_table (void); |
392a587b | 164 | |
a14ed312 | 165 | void _initialize_symfile (void); |
c906108c SS |
166 | |
167 | /* List of all available sym_fns. On gdb startup, each object file reader | |
168 | calls add_symtab_fns() to register information on each format it is | |
169 | prepared to read. */ | |
170 | ||
171 | static struct sym_fns *symtab_fns = NULL; | |
172 | ||
173 | /* Flag for whether user will be reloading symbols multiple times. | |
174 | Defaults to ON for VxWorks, otherwise OFF. */ | |
175 | ||
176 | #ifdef SYMBOL_RELOADING_DEFAULT | |
177 | int symbol_reloading = SYMBOL_RELOADING_DEFAULT; | |
178 | #else | |
179 | int symbol_reloading = 0; | |
180 | #endif | |
181 | ||
182 | /* If non-zero, then on HP-UX (i.e., platforms that use somsolib.c), | |
183 | this variable is interpreted as a threshhold. If adding a new | |
184 | library's symbol table to those already known to the debugger would | |
185 | exceed this threshhold, then the shlib's symbols are not added. | |
186 | ||
187 | If non-zero on other platforms, shared library symbols will be added | |
188 | automatically when the inferior is created, new libraries are loaded, | |
189 | or when attaching to the inferior. This is almost always what users | |
190 | will want to have happen; but for very large programs, the startup | |
191 | time will be excessive, and so if this is a problem, the user can | |
192 | clear this flag and then add the shared library symbols as needed. | |
193 | Note that there is a potential for confusion, since if the shared | |
194 | library symbols are not loaded, commands like "info fun" will *not* | |
195 | report all the functions that are actually present. | |
196 | ||
197 | Note that HP-UX interprets this variable to mean, "threshhold size | |
198 | in megabytes, where zero means never add". Other platforms interpret | |
199 | this variable to mean, "always add if non-zero, never add if zero." | |
c5aa993b | 200 | */ |
c906108c SS |
201 | |
202 | int auto_solib_add = 1; | |
c906108c | 203 | \f |
c5aa993b | 204 | |
c906108c SS |
205 | /* Since this function is called from within qsort, in an ANSI environment |
206 | it must conform to the prototype for qsort, which specifies that the | |
207 | comparison function takes two "void *" pointers. */ | |
208 | ||
209 | static int | |
fba45db2 | 210 | compare_symbols (const PTR s1p, const PTR s2p) |
c906108c SS |
211 | { |
212 | register struct symbol **s1, **s2; | |
213 | ||
214 | s1 = (struct symbol **) s1p; | |
215 | s2 = (struct symbol **) s2p; | |
fba7f19c | 216 | return (STRCMP (SYMBOL_SOURCE_NAME (*s1), SYMBOL_SOURCE_NAME (*s2))); |
c906108c SS |
217 | } |
218 | ||
219 | /* | |
220 | ||
c5aa993b | 221 | LOCAL FUNCTION |
c906108c | 222 | |
c5aa993b | 223 | compare_psymbols -- compare two partial symbols by name |
c906108c | 224 | |
c5aa993b | 225 | DESCRIPTION |
c906108c | 226 | |
c5aa993b JM |
227 | Given pointers to pointers to two partial symbol table entries, |
228 | compare them by name and return -N, 0, or +N (ala strcmp). | |
229 | Typically used by sorting routines like qsort(). | |
c906108c | 230 | |
c5aa993b | 231 | NOTES |
c906108c | 232 | |
c5aa993b JM |
233 | Does direct compare of first two characters before punting |
234 | and passing to strcmp for longer compares. Note that the | |
235 | original version had a bug whereby two null strings or two | |
236 | identically named one character strings would return the | |
237 | comparison of memory following the null byte. | |
c906108c SS |
238 | |
239 | */ | |
240 | ||
241 | static int | |
fba45db2 | 242 | compare_psymbols (const PTR s1p, const PTR s2p) |
c906108c | 243 | { |
fba7f19c EZ |
244 | register struct partial_symbol **s1, **s2; |
245 | register char *st1, *st2; | |
246 | ||
247 | s1 = (struct partial_symbol **) s1p; | |
248 | s2 = (struct partial_symbol **) s2p; | |
249 | st1 = SYMBOL_SOURCE_NAME (*s1); | |
250 | st2 = SYMBOL_SOURCE_NAME (*s2); | |
251 | ||
c906108c SS |
252 | |
253 | if ((st1[0] - st2[0]) || !st1[0]) | |
254 | { | |
255 | return (st1[0] - st2[0]); | |
256 | } | |
257 | else if ((st1[1] - st2[1]) || !st1[1]) | |
258 | { | |
259 | return (st1[1] - st2[1]); | |
260 | } | |
261 | else | |
262 | { | |
263 | /* Note: I replaced the STRCMP line (commented out below) | |
264 | * with a simpler "strcmp()" which compares the 2 strings | |
265 | * from the beginning. (STRCMP is a macro which first compares | |
266 | * the initial characters, then falls back on strcmp). | |
267 | * The reason is that the STRCMP line was tickling a C compiler | |
268 | * bug on HP-UX 10.30, which is avoided with the simpler | |
269 | * code. The performance gain from the more complicated code | |
270 | * is negligible, given that we have already checked the | |
271 | * initial 2 characters above. I reported the compiler bug, | |
272 | * and once it is fixed the original line can be put back. RT | |
273 | */ | |
274 | /* return ( STRCMP (st1 + 2, st2 + 2)); */ | |
c5aa993b | 275 | return (strcmp (st1, st2)); |
c906108c SS |
276 | } |
277 | } | |
278 | ||
279 | void | |
fba45db2 | 280 | sort_pst_symbols (struct partial_symtab *pst) |
c906108c SS |
281 | { |
282 | /* Sort the global list; don't sort the static list */ | |
283 | ||
c5aa993b JM |
284 | qsort (pst->objfile->global_psymbols.list + pst->globals_offset, |
285 | pst->n_global_syms, sizeof (struct partial_symbol *), | |
c906108c SS |
286 | compare_psymbols); |
287 | } | |
288 | ||
289 | /* Call sort_block_syms to sort alphabetically the symbols of one block. */ | |
290 | ||
291 | void | |
fba45db2 | 292 | sort_block_syms (register struct block *b) |
c906108c SS |
293 | { |
294 | qsort (&BLOCK_SYM (b, 0), BLOCK_NSYMS (b), | |
295 | sizeof (struct symbol *), compare_symbols); | |
296 | } | |
297 | ||
298 | /* Call sort_symtab_syms to sort alphabetically | |
299 | the symbols of each block of one symtab. */ | |
300 | ||
301 | void | |
fba45db2 | 302 | sort_symtab_syms (register struct symtab *s) |
c906108c SS |
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 * | |
fba45db2 | 327 | obsavestring (char *ptr, int size, struct obstack *obstackp) |
c906108c SS |
328 | { |
329 | register char *p = (char *) obstack_alloc (obstackp, size + 1); | |
330 | /* Open-coded memcpy--saves function call time. These strings are usually | |
331 | short. FIXME: Is this really still true with a compiler that can | |
332 | inline memcpy? */ | |
333 | { | |
334 | register char *p1 = ptr; | |
335 | register char *p2 = p; | |
336 | char *end = ptr + size; | |
337 | while (p1 != end) | |
338 | *p2++ = *p1++; | |
339 | } | |
340 | p[size] = 0; | |
341 | return p; | |
342 | } | |
343 | ||
344 | /* Concatenate strings S1, S2 and S3; return the new string. Space is found | |
345 | in the obstack pointed to by OBSTACKP. */ | |
346 | ||
347 | char * | |
fba45db2 KB |
348 | obconcat (struct obstack *obstackp, const char *s1, const char *s2, |
349 | const char *s3) | |
c906108c SS |
350 | { |
351 | register int len = strlen (s1) + strlen (s2) + strlen (s3) + 1; | |
352 | register char *val = (char *) obstack_alloc (obstackp, len); | |
353 | strcpy (val, s1); | |
354 | strcat (val, s2); | |
355 | strcat (val, s3); | |
356 | return val; | |
357 | } | |
358 | ||
359 | /* True if we are nested inside psymtab_to_symtab. */ | |
360 | ||
361 | int currently_reading_symtab = 0; | |
362 | ||
363 | static void | |
fba45db2 | 364 | decrement_reading_symtab (void *dummy) |
c906108c SS |
365 | { |
366 | currently_reading_symtab--; | |
367 | } | |
368 | ||
369 | /* Get the symbol table that corresponds to a partial_symtab. | |
370 | This is fast after the first time you do it. In fact, there | |
371 | is an even faster macro PSYMTAB_TO_SYMTAB that does the fast | |
372 | case inline. */ | |
373 | ||
374 | struct symtab * | |
fba45db2 | 375 | psymtab_to_symtab (register struct partial_symtab *pst) |
c906108c SS |
376 | { |
377 | /* If it's been looked up before, return it. */ | |
378 | if (pst->symtab) | |
379 | return pst->symtab; | |
380 | ||
381 | /* If it has not yet been read in, read it. */ | |
382 | if (!pst->readin) | |
c5aa993b | 383 | { |
c906108c SS |
384 | struct cleanup *back_to = make_cleanup (decrement_reading_symtab, NULL); |
385 | currently_reading_symtab++; | |
386 | (*pst->read_symtab) (pst); | |
387 | do_cleanups (back_to); | |
388 | } | |
389 | ||
390 | return pst->symtab; | |
391 | } | |
392 | ||
393 | /* Initialize entry point information for this objfile. */ | |
394 | ||
395 | void | |
fba45db2 | 396 | init_entry_point_info (struct objfile *objfile) |
c906108c SS |
397 | { |
398 | /* Save startup file's range of PC addresses to help blockframe.c | |
399 | decide where the bottom of the stack is. */ | |
400 | ||
c5aa993b | 401 | if (bfd_get_file_flags (objfile->obfd) & EXEC_P) |
c906108c SS |
402 | { |
403 | /* Executable file -- record its entry point so we'll recognize | |
c5aa993b JM |
404 | the startup file because it contains the entry point. */ |
405 | objfile->ei.entry_point = bfd_get_start_address (objfile->obfd); | |
c906108c SS |
406 | } |
407 | else | |
408 | { | |
409 | /* Examination of non-executable.o files. Short-circuit this stuff. */ | |
c5aa993b | 410 | objfile->ei.entry_point = INVALID_ENTRY_POINT; |
c906108c | 411 | } |
c5aa993b JM |
412 | objfile->ei.entry_file_lowpc = INVALID_ENTRY_LOWPC; |
413 | objfile->ei.entry_file_highpc = INVALID_ENTRY_HIGHPC; | |
414 | objfile->ei.entry_func_lowpc = INVALID_ENTRY_LOWPC; | |
415 | objfile->ei.entry_func_highpc = INVALID_ENTRY_HIGHPC; | |
416 | objfile->ei.main_func_lowpc = INVALID_ENTRY_LOWPC; | |
417 | objfile->ei.main_func_highpc = INVALID_ENTRY_HIGHPC; | |
c906108c SS |
418 | } |
419 | ||
420 | /* Get current entry point address. */ | |
421 | ||
422 | CORE_ADDR | |
fba45db2 | 423 | entry_point_address (void) |
c906108c SS |
424 | { |
425 | return symfile_objfile ? symfile_objfile->ei.entry_point : 0; | |
426 | } | |
427 | ||
428 | /* Remember the lowest-addressed loadable section we've seen. | |
429 | This function is called via bfd_map_over_sections. | |
430 | ||
431 | In case of equal vmas, the section with the largest size becomes the | |
432 | lowest-addressed loadable section. | |
433 | ||
434 | If the vmas and sizes are equal, the last section is considered the | |
435 | lowest-addressed loadable section. */ | |
436 | ||
437 | void | |
fba45db2 | 438 | find_lowest_section (bfd *abfd, asection *sect, PTR obj) |
c906108c | 439 | { |
c5aa993b | 440 | asection **lowest = (asection **) obj; |
c906108c SS |
441 | |
442 | if (0 == (bfd_get_section_flags (abfd, sect) & SEC_LOAD)) | |
443 | return; | |
444 | if (!*lowest) | |
445 | *lowest = sect; /* First loadable section */ | |
446 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
447 | *lowest = sect; /* A lower loadable section */ | |
448 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
449 | && (bfd_section_size (abfd, (*lowest)) | |
450 | <= bfd_section_size (abfd, sect))) | |
451 | *lowest = sect; | |
452 | } | |
453 | ||
62557bbc KB |
454 | |
455 | /* Build (allocate and populate) a section_addr_info struct from | |
456 | an existing section table. */ | |
457 | ||
458 | extern struct section_addr_info * | |
459 | build_section_addr_info_from_section_table (const struct section_table *start, | |
460 | const struct section_table *end) | |
461 | { | |
462 | struct section_addr_info *sap; | |
463 | const struct section_table *stp; | |
464 | int oidx; | |
465 | ||
466 | sap = xmalloc (sizeof (struct section_addr_info)); | |
467 | memset (sap, 0, sizeof (struct section_addr_info)); | |
468 | ||
469 | for (stp = start, oidx = 0; stp != end; stp++) | |
470 | { | |
62557bbc KB |
471 | if (stp->the_bfd_section->flags & (SEC_ALLOC | SEC_LOAD) |
472 | && oidx < MAX_SECTIONS) | |
473 | { | |
474 | sap->other[oidx].addr = stp->addr; | |
475 | sap->other[oidx].name = xstrdup (stp->the_bfd_section->name); | |
476 | sap->other[oidx].sectindex = stp->the_bfd_section->index; | |
477 | oidx++; | |
478 | } | |
479 | } | |
480 | ||
481 | return sap; | |
482 | } | |
483 | ||
484 | ||
485 | /* Free all memory allocated by build_section_addr_info_from_section_table. */ | |
486 | ||
487 | extern void | |
488 | free_section_addr_info (struct section_addr_info *sap) | |
489 | { | |
490 | int idx; | |
491 | ||
492 | for (idx = 0; idx < MAX_SECTIONS; idx++) | |
493 | if (sap->other[idx].name) | |
494 | free (sap->other[idx].name); | |
495 | free (sap); | |
496 | } | |
497 | ||
498 | ||
c906108c SS |
499 | /* Parse the user's idea of an offset for dynamic linking, into our idea |
500 | of how to represent it for fast symbol reading. This is the default | |
501 | version of the sym_fns.sym_offsets function for symbol readers that | |
502 | don't need to do anything special. It allocates a section_offsets table | |
503 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
504 | ||
d4f3574e | 505 | void |
fba45db2 KB |
506 | default_symfile_offsets (struct objfile *objfile, |
507 | struct section_addr_info *addrs) | |
c906108c | 508 | { |
c906108c | 509 | int i; |
b8fbeb18 | 510 | asection *sect = NULL; |
c906108c SS |
511 | |
512 | objfile->num_sections = SECT_OFF_MAX; | |
d4f3574e | 513 | objfile->section_offsets = (struct section_offsets *) |
c5aa993b | 514 | obstack_alloc (&objfile->psymbol_obstack, SIZEOF_SECTION_OFFSETS); |
d4f3574e | 515 | memset (objfile->section_offsets, 0, SIZEOF_SECTION_OFFSETS); |
c906108c | 516 | |
b8fbeb18 EZ |
517 | /* Now calculate offsets for section that were specified by the |
518 | caller. */ | |
2acceee2 JM |
519 | for (i = 0; i < MAX_SECTIONS && addrs->other[i].name; i++) |
520 | { | |
521 | struct other_sections *osp ; | |
522 | ||
523 | osp = &addrs->other[i] ; | |
b8fbeb18 | 524 | if (osp->addr == 0) |
2acceee2 | 525 | continue; |
b8fbeb18 | 526 | |
2acceee2 | 527 | /* Record all sections in offsets */ |
b8fbeb18 EZ |
528 | /* The section_offsets in the objfile are here filled in using |
529 | the BFD index. */ | |
a4c8257b | 530 | (objfile->section_offsets)->offsets[osp->sectindex] = osp->addr; |
2acceee2 | 531 | } |
c906108c | 532 | |
b8fbeb18 EZ |
533 | /* Remember the bfd indexes for the .text, .data, .bss and |
534 | .rodata sections. */ | |
535 | ||
536 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); | |
537 | if (sect) | |
538 | objfile->sect_index_text = sect->index; | |
539 | ||
540 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
541 | if (sect) | |
542 | objfile->sect_index_data = sect->index; | |
543 | ||
544 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
545 | if (sect) | |
546 | objfile->sect_index_bss = sect->index; | |
547 | ||
548 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
549 | if (sect) | |
550 | objfile->sect_index_rodata = sect->index; | |
551 | ||
552 | } | |
c906108c SS |
553 | |
554 | /* Process a symbol file, as either the main file or as a dynamically | |
555 | loaded file. | |
556 | ||
96baa820 JM |
557 | OBJFILE is where the symbols are to be read from. |
558 | ||
559 | ADDR is the address where the text segment was loaded, unless the | |
560 | objfile is the main symbol file, in which case it is zero. | |
561 | ||
562 | MAINLINE is nonzero if this is the main symbol file, or zero if | |
563 | it's an extra symbol file such as dynamically loaded code. | |
564 | ||
565 | VERBO is nonzero if the caller has printed a verbose message about | |
566 | the symbol reading (and complaints can be more terse about it). */ | |
c906108c SS |
567 | |
568 | void | |
fba45db2 KB |
569 | syms_from_objfile (struct objfile *objfile, struct section_addr_info *addrs, |
570 | int mainline, int verbo) | |
c906108c | 571 | { |
2acceee2 JM |
572 | asection *lower_sect; |
573 | asection *sect; | |
574 | CORE_ADDR lower_offset; | |
575 | struct section_addr_info local_addr; | |
c906108c | 576 | struct cleanup *old_chain; |
2acceee2 JM |
577 | int i; |
578 | ||
579 | /* If ADDRS is NULL, initialize the local section_addr_info struct and | |
580 | point ADDRS to it. We now establish the convention that an addr of | |
581 | zero means no load address was specified. */ | |
582 | ||
583 | if (addrs == NULL) | |
584 | { | |
585 | memset (&local_addr, 0, sizeof (local_addr)); | |
586 | addrs = &local_addr; | |
587 | } | |
c906108c SS |
588 | |
589 | init_entry_point_info (objfile); | |
590 | find_sym_fns (objfile); | |
591 | ||
592 | /* Make sure that partially constructed symbol tables will be cleaned up | |
593 | if an error occurs during symbol reading. */ | |
74b7792f | 594 | old_chain = make_cleanup_free_objfile (objfile); |
c906108c | 595 | |
c5aa993b | 596 | if (mainline) |
c906108c SS |
597 | { |
598 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 599 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 600 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
601 | |
602 | /* Since no error yet, throw away the old symbol table. */ | |
603 | ||
604 | if (symfile_objfile != NULL) | |
605 | { | |
606 | free_objfile (symfile_objfile); | |
607 | symfile_objfile = NULL; | |
608 | } | |
609 | ||
610 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
611 | If the user wants to get rid of them, they should do "symbol-file" |
612 | without arguments first. Not sure this is the best behavior | |
613 | (PR 2207). */ | |
c906108c | 614 | |
c5aa993b | 615 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
616 | } |
617 | ||
618 | /* Convert addr into an offset rather than an absolute address. | |
619 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 620 | and assume that <addr> is where that got loaded. |
c906108c | 621 | |
53a5351d JM |
622 | We no longer warn if the lowest section is not a text segment (as |
623 | happens for the PA64 port. */ | |
e7cf9df1 | 624 | if (!mainline) |
c906108c | 625 | { |
2acceee2 JM |
626 | /* Find lowest loadable section to be used as starting point for |
627 | continguous sections. FIXME!! won't work without call to find | |
628 | .text first, but this assumes text is lowest section. */ | |
629 | lower_sect = bfd_get_section_by_name (objfile->obfd, ".text"); | |
630 | if (lower_sect == NULL) | |
c906108c | 631 | bfd_map_over_sections (objfile->obfd, find_lowest_section, |
2acceee2 JM |
632 | (PTR) &lower_sect); |
633 | if (lower_sect == NULL) | |
c906108c SS |
634 | warning ("no loadable sections found in added symbol-file %s", |
635 | objfile->name); | |
b8fbeb18 EZ |
636 | else |
637 | if ((bfd_get_section_flags (objfile->obfd, lower_sect) & SEC_CODE) == 0) | |
638 | warning ("Lowest section in %s is %s at %s", | |
639 | objfile->name, | |
640 | bfd_section_name (objfile->obfd, lower_sect), | |
641 | paddr (bfd_section_vma (objfile->obfd, lower_sect))); | |
2acceee2 JM |
642 | if (lower_sect != NULL) |
643 | lower_offset = bfd_section_vma (objfile->obfd, lower_sect); | |
644 | else | |
645 | lower_offset = 0; | |
646 | ||
647 | /* Calculate offsets for the loadable sections. | |
648 | FIXME! Sections must be in order of increasing loadable section | |
649 | so that contiguous sections can use the lower-offset!!! | |
650 | ||
651 | Adjust offsets if the segments are not contiguous. | |
652 | If the section is contiguous, its offset should be set to | |
653 | the offset of the highest loadable section lower than it | |
654 | (the loadable section directly below it in memory). | |
655 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
656 | ||
e7cf9df1 | 657 | /* Calculate offsets for sections. */ |
2acceee2 JM |
658 | for (i=0 ; i < MAX_SECTIONS && addrs->other[i].name; i++) |
659 | { | |
e7cf9df1 | 660 | if (addrs->other[i].addr != 0) |
2acceee2 | 661 | { |
e7cf9df1 | 662 | sect = bfd_get_section_by_name (objfile->obfd, addrs->other[i].name); |
2acceee2 JM |
663 | if (sect) |
664 | { | |
665 | addrs->other[i].addr -= bfd_section_vma (objfile->obfd, sect); | |
666 | lower_offset = addrs->other[i].addr; | |
e7cf9df1 | 667 | /* This is the index used by BFD. */ |
2acceee2 JM |
668 | addrs->other[i].sectindex = sect->index ; |
669 | } | |
670 | else | |
671 | { | |
672 | warning ("section %s not found in %s", addrs->other[i].name, | |
673 | objfile->name); | |
674 | addrs->other[i].addr = 0; | |
675 | } | |
676 | } | |
677 | else | |
678 | addrs->other[i].addr = lower_offset; | |
679 | } | |
c906108c SS |
680 | } |
681 | ||
682 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
683 | appear for this new file, and record how verbose to be, then do the | |
684 | initial symbol reading for this file. */ | |
685 | ||
c5aa993b | 686 | (*objfile->sf->sym_init) (objfile); |
c906108c SS |
687 | clear_complaints (1, verbo); |
688 | ||
2acceee2 | 689 | (*objfile->sf->sym_offsets) (objfile, addrs); |
c906108c SS |
690 | |
691 | #ifndef IBM6000_TARGET | |
692 | /* This is a SVR4/SunOS specific hack, I think. In any event, it | |
693 | screws RS/6000. sym_offsets should be doing this sort of thing, | |
694 | because it knows the mapping between bfd sections and | |
695 | section_offsets. */ | |
696 | /* This is a hack. As far as I can tell, section offsets are not | |
697 | target dependent. They are all set to addr with a couple of | |
698 | exceptions. The exceptions are sysvr4 shared libraries, whose | |
699 | offsets are kept in solib structures anyway and rs6000 xcoff | |
700 | which handles shared libraries in a completely unique way. | |
701 | ||
702 | Section offsets are built similarly, except that they are built | |
703 | by adding addr in all cases because there is no clear mapping | |
704 | from section_offsets into actual sections. Note that solib.c | |
96baa820 | 705 | has a different algorithm for finding section offsets. |
c906108c SS |
706 | |
707 | These should probably all be collapsed into some target | |
708 | independent form of shared library support. FIXME. */ | |
709 | ||
2acceee2 | 710 | if (addrs) |
c906108c SS |
711 | { |
712 | struct obj_section *s; | |
713 | ||
2acceee2 JM |
714 | /* Map section offsets in "addr" back to the object's |
715 | sections by comparing the section names with bfd's | |
716 | section names. Then adjust the section address by | |
717 | the offset. */ /* for gdb/13815 */ | |
718 | ||
96baa820 | 719 | ALL_OBJFILE_OSECTIONS (objfile, s) |
c906108c | 720 | { |
2acceee2 JM |
721 | CORE_ADDR s_addr = 0; |
722 | int i; | |
723 | ||
62557bbc KB |
724 | for (i = 0; |
725 | !s_addr && i < MAX_SECTIONS && addrs->other[i].name; | |
726 | i++) | |
2acceee2 JM |
727 | if (strcmp (s->the_bfd_section->name, addrs->other[i].name) == 0) |
728 | s_addr = addrs->other[i].addr; /* end added for gdb/13815 */ | |
729 | ||
c906108c | 730 | s->addr -= s->offset; |
2acceee2 | 731 | s->addr += s_addr; |
c906108c | 732 | s->endaddr -= s->offset; |
2acceee2 JM |
733 | s->endaddr += s_addr; |
734 | s->offset += s_addr; | |
c906108c SS |
735 | } |
736 | } | |
737 | #endif /* not IBM6000_TARGET */ | |
738 | ||
96baa820 | 739 | (*objfile->sf->sym_read) (objfile, mainline); |
c906108c SS |
740 | |
741 | if (!have_partial_symbols () && !have_full_symbols ()) | |
742 | { | |
743 | wrap_here (""); | |
744 | printf_filtered ("(no debugging symbols found)..."); | |
745 | wrap_here (""); | |
746 | } | |
747 | ||
748 | /* Don't allow char * to have a typename (else would get caddr_t). | |
749 | Ditto void *. FIXME: Check whether this is now done by all the | |
750 | symbol readers themselves (many of them now do), and if so remove | |
751 | it from here. */ | |
752 | ||
753 | TYPE_NAME (lookup_pointer_type (builtin_type_char)) = 0; | |
754 | TYPE_NAME (lookup_pointer_type (builtin_type_void)) = 0; | |
755 | ||
756 | /* Mark the objfile has having had initial symbol read attempted. Note | |
757 | that this does not mean we found any symbols... */ | |
758 | ||
c5aa993b | 759 | objfile->flags |= OBJF_SYMS; |
c906108c SS |
760 | |
761 | /* Discard cleanups as symbol reading was successful. */ | |
762 | ||
763 | discard_cleanups (old_chain); | |
764 | ||
96baa820 | 765 | /* Call this after reading in a new symbol table to give target |
38c2ef12 | 766 | dependent code a crack at the new symbols. For instance, this |
96baa820 JM |
767 | could be used to update the values of target-specific symbols GDB |
768 | needs to keep track of (such as _sigtramp, or whatever). */ | |
c906108c SS |
769 | |
770 | TARGET_SYMFILE_POSTREAD (objfile); | |
771 | } | |
772 | ||
773 | /* Perform required actions after either reading in the initial | |
774 | symbols for a new objfile, or mapping in the symbols from a reusable | |
775 | objfile. */ | |
c5aa993b | 776 | |
c906108c | 777 | void |
fba45db2 | 778 | new_symfile_objfile (struct objfile *objfile, int mainline, int verbo) |
c906108c SS |
779 | { |
780 | ||
781 | /* If this is the main symbol file we have to clean up all users of the | |
782 | old main symbol file. Otherwise it is sufficient to fixup all the | |
783 | breakpoints that may have been redefined by this symbol file. */ | |
784 | if (mainline) | |
785 | { | |
786 | /* OK, make it the "real" symbol file. */ | |
787 | symfile_objfile = objfile; | |
788 | ||
789 | clear_symtab_users (); | |
790 | } | |
791 | else | |
792 | { | |
793 | breakpoint_re_set (); | |
794 | } | |
795 | ||
796 | /* We're done reading the symbol file; finish off complaints. */ | |
797 | clear_complaints (0, verbo); | |
798 | } | |
799 | ||
800 | /* Process a symbol file, as either the main file or as a dynamically | |
801 | loaded file. | |
802 | ||
803 | NAME is the file name (which will be tilde-expanded and made | |
804 | absolute herein) (but we don't free or modify NAME itself). | |
805 | FROM_TTY says how verbose to be. MAINLINE specifies whether this | |
806 | is the main symbol file, or whether it's an extra symbol file such | |
807 | as dynamically loaded code. If !mainline, ADDR is the address | |
808 | where the text segment was loaded. | |
809 | ||
c906108c SS |
810 | Upon success, returns a pointer to the objfile that was added. |
811 | Upon failure, jumps back to command level (never returns). */ | |
812 | ||
813 | struct objfile * | |
fba45db2 KB |
814 | symbol_file_add (char *name, int from_tty, struct section_addr_info *addrs, |
815 | int mainline, int flags) | |
c906108c SS |
816 | { |
817 | struct objfile *objfile; | |
818 | struct partial_symtab *psymtab; | |
819 | bfd *abfd; | |
820 | ||
821 | /* Open a bfd for the file, and give user a chance to burp if we'd be | |
822 | interactively wiping out any existing symbols. */ | |
823 | ||
824 | abfd = symfile_bfd_open (name); | |
825 | ||
826 | if ((have_full_symbols () || have_partial_symbols ()) | |
827 | && mainline | |
828 | && from_tty | |
829 | && !query ("Load new symbol table from \"%s\"? ", name)) | |
c5aa993b | 830 | error ("Not confirmed."); |
c906108c | 831 | |
2df3850c | 832 | objfile = allocate_objfile (abfd, flags); |
c906108c SS |
833 | |
834 | /* If the objfile uses a mapped symbol file, and we have a psymtab for | |
835 | it, then skip reading any symbols at this time. */ | |
836 | ||
c5aa993b | 837 | if ((objfile->flags & OBJF_MAPPED) && (objfile->flags & OBJF_SYMS)) |
c906108c SS |
838 | { |
839 | /* We mapped in an existing symbol table file that already has had | |
c5aa993b JM |
840 | initial symbol reading performed, so we can skip that part. Notify |
841 | the user that instead of reading the symbols, they have been mapped. | |
842 | */ | |
c906108c SS |
843 | if (from_tty || info_verbose) |
844 | { | |
845 | printf_filtered ("Mapped symbols for %s...", name); | |
846 | wrap_here (""); | |
847 | gdb_flush (gdb_stdout); | |
848 | } | |
849 | init_entry_point_info (objfile); | |
850 | find_sym_fns (objfile); | |
851 | } | |
852 | else | |
853 | { | |
854 | /* We either created a new mapped symbol table, mapped an existing | |
c5aa993b JM |
855 | symbol table file which has not had initial symbol reading |
856 | performed, or need to read an unmapped symbol table. */ | |
c906108c SS |
857 | if (from_tty || info_verbose) |
858 | { | |
859 | if (pre_add_symbol_hook) | |
860 | pre_add_symbol_hook (name); | |
861 | else | |
862 | { | |
863 | printf_filtered ("Reading symbols from %s...", name); | |
864 | wrap_here (""); | |
865 | gdb_flush (gdb_stdout); | |
866 | } | |
867 | } | |
2acceee2 | 868 | syms_from_objfile (objfile, addrs, mainline, from_tty); |
c906108c SS |
869 | } |
870 | ||
871 | /* We now have at least a partial symbol table. Check to see if the | |
872 | user requested that all symbols be read on initial access via either | |
873 | the gdb startup command line or on a per symbol file basis. Expand | |
874 | all partial symbol tables for this objfile if so. */ | |
875 | ||
2acceee2 | 876 | if ((flags & OBJF_READNOW) || readnow_symbol_files) |
c906108c SS |
877 | { |
878 | if (from_tty || info_verbose) | |
879 | { | |
880 | printf_filtered ("expanding to full symbols..."); | |
881 | wrap_here (""); | |
882 | gdb_flush (gdb_stdout); | |
883 | } | |
884 | ||
c5aa993b | 885 | for (psymtab = objfile->psymtabs; |
c906108c | 886 | psymtab != NULL; |
c5aa993b | 887 | psymtab = psymtab->next) |
c906108c SS |
888 | { |
889 | psymtab_to_symtab (psymtab); | |
890 | } | |
891 | } | |
892 | ||
893 | if (from_tty || info_verbose) | |
894 | { | |
895 | if (post_add_symbol_hook) | |
c5aa993b | 896 | post_add_symbol_hook (); |
c906108c | 897 | else |
c5aa993b JM |
898 | { |
899 | printf_filtered ("done.\n"); | |
900 | gdb_flush (gdb_stdout); | |
901 | } | |
c906108c SS |
902 | } |
903 | ||
904 | new_symfile_objfile (objfile, mainline, from_tty); | |
905 | ||
11cf8741 JM |
906 | if (target_new_objfile_hook) |
907 | target_new_objfile_hook (objfile); | |
c906108c SS |
908 | |
909 | return (objfile); | |
910 | } | |
911 | ||
912 | /* This is the symbol-file command. Read the file, analyze its | |
913 | symbols, and add a struct symtab to a symtab list. The syntax of | |
914 | the command is rather bizarre--(1) buildargv implements various | |
915 | quoting conventions which are undocumented and have little or | |
916 | nothing in common with the way things are quoted (or not quoted) | |
917 | elsewhere in GDB, (2) options are used, which are not generally | |
918 | used in GDB (perhaps "set mapped on", "set readnow on" would be | |
919 | better), (3) the order of options matters, which is contrary to GNU | |
920 | conventions (because it is confusing and inconvenient). */ | |
4da95fc4 EZ |
921 | /* Note: ezannoni 2000-04-17. This function used to have support for |
922 | rombug (see remote-os9k.c). It consisted of a call to target_link() | |
923 | (target.c) to get the address of the text segment from the target, | |
924 | and pass that to symbol_file_add(). This is no longer supported. */ | |
c906108c SS |
925 | |
926 | void | |
fba45db2 | 927 | symbol_file_command (char *args, int from_tty) |
c906108c SS |
928 | { |
929 | char **argv; | |
930 | char *name = NULL; | |
c906108c | 931 | struct cleanup *cleanups; |
2df3850c | 932 | int flags = OBJF_USERLOADED; |
c906108c SS |
933 | |
934 | dont_repeat (); | |
935 | ||
936 | if (args == NULL) | |
937 | { | |
938 | if ((have_full_symbols () || have_partial_symbols ()) | |
939 | && from_tty | |
940 | && !query ("Discard symbol table from `%s'? ", | |
c5aa993b | 941 | symfile_objfile->name)) |
c906108c SS |
942 | error ("Not confirmed."); |
943 | free_all_objfiles (); | |
944 | ||
945 | /* solib descriptors may have handles to objfiles. Since their | |
946 | storage has just been released, we'd better wipe the solib | |
947 | descriptors as well. | |
c5aa993b | 948 | */ |
c906108c SS |
949 | #if defined(SOLIB_RESTART) |
950 | SOLIB_RESTART (); | |
951 | #endif | |
952 | ||
953 | symfile_objfile = NULL; | |
954 | if (from_tty) | |
c906108c | 955 | printf_unfiltered ("No symbol file now.\n"); |
c906108c SS |
956 | #ifdef HPUXHPPA |
957 | RESET_HP_UX_GLOBALS (); | |
958 | #endif | |
959 | } | |
960 | else | |
961 | { | |
962 | if ((argv = buildargv (args)) == NULL) | |
963 | { | |
964 | nomem (0); | |
965 | } | |
7a292a7a | 966 | cleanups = make_cleanup_freeargv (argv); |
c906108c SS |
967 | while (*argv != NULL) |
968 | { | |
969 | if (STREQ (*argv, "-mapped")) | |
4da95fc4 EZ |
970 | flags |= OBJF_MAPPED; |
971 | else | |
972 | if (STREQ (*argv, "-readnow")) | |
2acceee2 | 973 | flags |= OBJF_READNOW; |
4da95fc4 EZ |
974 | else |
975 | if (**argv == '-') | |
976 | error ("unknown option `%s'", *argv); | |
c5aa993b | 977 | else |
c5aa993b | 978 | { |
4da95fc4 | 979 | name = *argv; |
2df3850c | 980 | symbol_file_add (name, from_tty, NULL, 1, flags); |
c906108c | 981 | #ifdef HPUXHPPA |
c5aa993b | 982 | RESET_HP_UX_GLOBALS (); |
c906108c | 983 | #endif |
4da95fc4 EZ |
984 | /* Getting new symbols may change our opinion about |
985 | what is frameless. */ | |
986 | reinit_frame_cache (); | |
c906108c | 987 | |
4da95fc4 EZ |
988 | set_initial_language (); |
989 | } | |
c906108c SS |
990 | argv++; |
991 | } | |
992 | ||
993 | if (name == NULL) | |
994 | { | |
995 | error ("no symbol file name was specified"); | |
996 | } | |
c5aa993b | 997 | TUIDO (((TuiOpaqueFuncPtr) tuiDisplayMainFunction)); |
c906108c SS |
998 | do_cleanups (cleanups); |
999 | } | |
1000 | } | |
1001 | ||
1002 | /* Set the initial language. | |
1003 | ||
1004 | A better solution would be to record the language in the psymtab when reading | |
1005 | partial symbols, and then use it (if known) to set the language. This would | |
1006 | be a win for formats that encode the language in an easily discoverable place, | |
1007 | such as DWARF. For stabs, we can jump through hoops looking for specially | |
1008 | named symbols or try to intuit the language from the specific type of stabs | |
1009 | we find, but we can't do that until later when we read in full symbols. | |
1010 | FIXME. */ | |
1011 | ||
1012 | static void | |
fba45db2 | 1013 | set_initial_language (void) |
c906108c SS |
1014 | { |
1015 | struct partial_symtab *pst; | |
c5aa993b | 1016 | enum language lang = language_unknown; |
c906108c SS |
1017 | |
1018 | pst = find_main_psymtab (); | |
1019 | if (pst != NULL) | |
1020 | { | |
c5aa993b | 1021 | if (pst->filename != NULL) |
c906108c | 1022 | { |
c5aa993b JM |
1023 | lang = deduce_language_from_filename (pst->filename); |
1024 | } | |
c906108c SS |
1025 | if (lang == language_unknown) |
1026 | { | |
c5aa993b JM |
1027 | /* Make C the default language */ |
1028 | lang = language_c; | |
c906108c SS |
1029 | } |
1030 | set_language (lang); | |
1031 | expected_language = current_language; /* Don't warn the user */ | |
1032 | } | |
1033 | } | |
1034 | ||
1035 | /* Open file specified by NAME and hand it off to BFD for preliminary | |
1036 | analysis. Result is a newly initialized bfd *, which includes a newly | |
1037 | malloc'd` copy of NAME (tilde-expanded and made absolute). | |
1038 | In case of trouble, error() is called. */ | |
1039 | ||
1040 | bfd * | |
fba45db2 | 1041 | symfile_bfd_open (char *name) |
c906108c SS |
1042 | { |
1043 | bfd *sym_bfd; | |
1044 | int desc; | |
1045 | char *absolute_name; | |
1046 | ||
1047 | ||
1048 | ||
1049 | name = tilde_expand (name); /* Returns 1st new malloc'd copy */ | |
1050 | ||
1051 | /* Look down path for it, allocate 2nd new malloc'd copy. */ | |
1052 | desc = openp (getenv ("PATH"), 1, name, O_RDONLY | O_BINARY, 0, &absolute_name); | |
1053 | #if defined(__GO32__) || defined(_WIN32) | |
1054 | if (desc < 0) | |
1055 | { | |
1056 | char *exename = alloca (strlen (name) + 5); | |
1057 | strcat (strcpy (exename, name), ".exe"); | |
1058 | desc = openp (getenv ("PATH"), 1, exename, O_RDONLY | O_BINARY, | |
c5aa993b | 1059 | 0, &absolute_name); |
c906108c SS |
1060 | } |
1061 | #endif | |
1062 | if (desc < 0) | |
1063 | { | |
1064 | make_cleanup (free, name); | |
1065 | perror_with_name (name); | |
1066 | } | |
1067 | free (name); /* Free 1st new malloc'd copy */ | |
1068 | name = absolute_name; /* Keep 2nd malloc'd copy in bfd */ | |
c5aa993b | 1069 | /* It'll be freed in free_objfile(). */ |
c906108c SS |
1070 | |
1071 | sym_bfd = bfd_fdopenr (name, gnutarget, desc); | |
1072 | if (!sym_bfd) | |
1073 | { | |
1074 | close (desc); | |
1075 | make_cleanup (free, name); | |
1076 | error ("\"%s\": can't open to read symbols: %s.", name, | |
1077 | bfd_errmsg (bfd_get_error ())); | |
1078 | } | |
1079 | sym_bfd->cacheable = true; | |
1080 | ||
1081 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1082 | { | |
1083 | /* FIXME: should be checking for errors from bfd_close (for one thing, | |
c5aa993b JM |
1084 | on error it does not free all the storage associated with the |
1085 | bfd). */ | |
c906108c SS |
1086 | bfd_close (sym_bfd); /* This also closes desc */ |
1087 | make_cleanup (free, name); | |
1088 | error ("\"%s\": can't read symbols: %s.", name, | |
1089 | bfd_errmsg (bfd_get_error ())); | |
1090 | } | |
1091 | return (sym_bfd); | |
1092 | } | |
1093 | ||
1094 | /* Link a new symtab_fns into the global symtab_fns list. Called on gdb | |
1095 | startup by the _initialize routine in each object file format reader, | |
1096 | to register information about each format the the reader is prepared | |
1097 | to handle. */ | |
1098 | ||
1099 | void | |
fba45db2 | 1100 | add_symtab_fns (struct sym_fns *sf) |
c906108c SS |
1101 | { |
1102 | sf->next = symtab_fns; | |
1103 | symtab_fns = sf; | |
1104 | } | |
1105 | ||
1106 | ||
1107 | /* Initialize to read symbols from the symbol file sym_bfd. It either | |
1108 | returns or calls error(). The result is an initialized struct sym_fns | |
1109 | in the objfile structure, that contains cached information about the | |
1110 | symbol file. */ | |
1111 | ||
1112 | static void | |
fba45db2 | 1113 | find_sym_fns (struct objfile *objfile) |
c906108c SS |
1114 | { |
1115 | struct sym_fns *sf; | |
c5aa993b JM |
1116 | enum bfd_flavour our_flavour = bfd_get_flavour (objfile->obfd); |
1117 | char *our_target = bfd_get_target (objfile->obfd); | |
c906108c | 1118 | |
c906108c SS |
1119 | /* Special kludge for apollo. See dstread.c. */ |
1120 | if (STREQN (our_target, "apollo", 6)) | |
c5aa993b | 1121 | our_flavour = (enum bfd_flavour) -2; |
c906108c | 1122 | |
c5aa993b | 1123 | for (sf = symtab_fns; sf != NULL; sf = sf->next) |
c906108c | 1124 | { |
c5aa993b | 1125 | if (our_flavour == sf->sym_flavour) |
c906108c | 1126 | { |
c5aa993b | 1127 | objfile->sf = sf; |
c906108c SS |
1128 | return; |
1129 | } | |
1130 | } | |
1131 | error ("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown.", | |
c5aa993b | 1132 | bfd_get_target (objfile->obfd)); |
c906108c SS |
1133 | } |
1134 | \f | |
1135 | /* This function runs the load command of our current target. */ | |
1136 | ||
1137 | static void | |
fba45db2 | 1138 | load_command (char *arg, int from_tty) |
c906108c SS |
1139 | { |
1140 | if (arg == NULL) | |
1141 | arg = get_exec_file (1); | |
1142 | target_load (arg, from_tty); | |
1143 | } | |
1144 | ||
1145 | /* This version of "load" should be usable for any target. Currently | |
1146 | it is just used for remote targets, not inftarg.c or core files, | |
1147 | on the theory that only in that case is it useful. | |
1148 | ||
1149 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1150 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1151 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1152 | performance compares. */ | |
917317f4 JM |
1153 | |
1154 | static int download_write_size = 512; | |
1155 | static int validate_download = 0; | |
1156 | ||
c906108c | 1157 | void |
917317f4 | 1158 | generic_load (char *args, int from_tty) |
c906108c | 1159 | { |
c906108c SS |
1160 | asection *s; |
1161 | bfd *loadfile_bfd; | |
1162 | time_t start_time, end_time; /* Start and end times of download */ | |
1163 | unsigned long data_count = 0; /* Number of bytes transferred to memory */ | |
917317f4 JM |
1164 | unsigned long write_count = 0; /* Number of writes needed. */ |
1165 | unsigned long load_offset; /* offset to add to vma for each section */ | |
1166 | char *filename; | |
1167 | struct cleanup *old_cleanups; | |
1168 | char *offptr; | |
c2d11a7d JM |
1169 | CORE_ADDR total_size = 0; |
1170 | CORE_ADDR total_sent = 0; | |
917317f4 JM |
1171 | |
1172 | /* Parse the input argument - the user can specify a load offset as | |
1173 | a second argument. */ | |
1174 | filename = xmalloc (strlen (args) + 1); | |
1175 | old_cleanups = make_cleanup (free, filename); | |
1176 | strcpy (filename, args); | |
1177 | offptr = strchr (filename, ' '); | |
1178 | if (offptr != NULL) | |
1179 | { | |
1180 | char *endptr; | |
1181 | load_offset = strtoul (offptr, &endptr, 0); | |
1182 | if (offptr == endptr) | |
1183 | error ("Invalid download offset:%s\n", offptr); | |
1184 | *offptr = '\0'; | |
1185 | } | |
c906108c SS |
1186 | else |
1187 | load_offset = 0; | |
1188 | ||
917317f4 | 1189 | /* Open the file for loading. */ |
c906108c SS |
1190 | loadfile_bfd = bfd_openr (filename, gnutarget); |
1191 | if (loadfile_bfd == NULL) | |
1192 | { | |
1193 | perror_with_name (filename); | |
1194 | return; | |
1195 | } | |
917317f4 | 1196 | |
c906108c SS |
1197 | /* FIXME: should be checking for errors from bfd_close (for one thing, |
1198 | on error it does not free all the storage associated with the | |
1199 | bfd). */ | |
5c65bbb6 | 1200 | make_cleanup_bfd_close (loadfile_bfd); |
c906108c | 1201 | |
c5aa993b | 1202 | if (!bfd_check_format (loadfile_bfd, bfd_object)) |
c906108c SS |
1203 | { |
1204 | error ("\"%s\" is not an object file: %s", filename, | |
1205 | bfd_errmsg (bfd_get_error ())); | |
1206 | } | |
c5aa993b | 1207 | |
c2d11a7d JM |
1208 | for (s = loadfile_bfd->sections; s; s = s->next) |
1209 | if (s->flags & SEC_LOAD) | |
1210 | total_size += bfd_get_section_size_before_reloc (s); | |
1211 | ||
c906108c SS |
1212 | start_time = time (NULL); |
1213 | ||
c5aa993b JM |
1214 | for (s = loadfile_bfd->sections; s; s = s->next) |
1215 | { | |
1216 | if (s->flags & SEC_LOAD) | |
1217 | { | |
917317f4 | 1218 | CORE_ADDR size = bfd_get_section_size_before_reloc (s); |
c5aa993b JM |
1219 | if (size > 0) |
1220 | { | |
1221 | char *buffer; | |
1222 | struct cleanup *old_chain; | |
917317f4 JM |
1223 | CORE_ADDR lma = s->lma + load_offset; |
1224 | CORE_ADDR block_size; | |
c5aa993b | 1225 | int err; |
917317f4 JM |
1226 | const char *sect_name = bfd_get_section_name (loadfile_bfd, s); |
1227 | CORE_ADDR sent; | |
c5aa993b | 1228 | |
917317f4 JM |
1229 | if (download_write_size > 0 && size > download_write_size) |
1230 | block_size = download_write_size; | |
1231 | else | |
1232 | block_size = size; | |
c5aa993b JM |
1233 | |
1234 | buffer = xmalloc (size); | |
1235 | old_chain = make_cleanup (free, buffer); | |
1236 | ||
c5aa993b JM |
1237 | /* Is this really necessary? I guess it gives the user something |
1238 | to look at during a long download. */ | |
8b93c638 JM |
1239 | #ifdef UI_OUT |
1240 | ui_out_message (uiout, 0, "Loading section %s, size 0x%s lma 0x%s\n", | |
1241 | sect_name, paddr_nz (size), paddr_nz (lma)); | |
1242 | #else | |
917317f4 JM |
1243 | fprintf_unfiltered (gdb_stdout, |
1244 | "Loading section %s, size 0x%s lma 0x%s\n", | |
1245 | sect_name, paddr_nz (size), paddr_nz (lma)); | |
8b93c638 | 1246 | #endif |
c5aa993b JM |
1247 | |
1248 | bfd_get_section_contents (loadfile_bfd, s, buffer, 0, size); | |
1249 | ||
c5aa993b JM |
1250 | sent = 0; |
1251 | do | |
1252 | { | |
917317f4 JM |
1253 | CORE_ADDR len; |
1254 | CORE_ADDR this_transfer = size - sent; | |
1255 | if (this_transfer >= block_size) | |
1256 | this_transfer = block_size; | |
1257 | len = target_write_memory_partial (lma, buffer, | |
1258 | this_transfer, &err); | |
c5aa993b JM |
1259 | if (err) |
1260 | break; | |
917317f4 JM |
1261 | if (validate_download) |
1262 | { | |
1263 | /* Broken memories and broken monitors manifest | |
1264 | themselves here when bring new computers to | |
1265 | life. This doubles already slow downloads. */ | |
1266 | /* NOTE: cagney/1999-10-18: A more efficient | |
1267 | implementation might add a verify_memory() | |
1268 | method to the target vector and then use | |
1269 | that. remote.c could implement that method | |
1270 | using the ``qCRC'' packet. */ | |
1271 | char *check = xmalloc (len); | |
1272 | struct cleanup *verify_cleanups = make_cleanup (free, check); | |
1273 | if (target_read_memory (lma, check, len) != 0) | |
1274 | error ("Download verify read failed at 0x%s", | |
1275 | paddr (lma)); | |
1276 | if (memcmp (buffer, check, len) != 0) | |
1277 | error ("Download verify compare failed at 0x%s", | |
1278 | paddr (lma)); | |
1279 | do_cleanups (verify_cleanups); | |
1280 | } | |
c5aa993b JM |
1281 | data_count += len; |
1282 | lma += len; | |
1283 | buffer += len; | |
917317f4 JM |
1284 | write_count += 1; |
1285 | sent += len; | |
c2d11a7d | 1286 | total_sent += len; |
917317f4 JM |
1287 | if (quit_flag |
1288 | || (ui_load_progress_hook != NULL | |
1289 | && ui_load_progress_hook (sect_name, sent))) | |
1290 | error ("Canceled the download"); | |
c2d11a7d JM |
1291 | |
1292 | if (show_load_progress != NULL) | |
1293 | show_load_progress (sect_name, sent, size, total_sent, total_size); | |
917317f4 JM |
1294 | } |
1295 | while (sent < size); | |
c5aa993b JM |
1296 | |
1297 | if (err != 0) | |
917317f4 | 1298 | error ("Memory access error while loading section %s.", sect_name); |
c906108c | 1299 | |
c5aa993b JM |
1300 | do_cleanups (old_chain); |
1301 | } | |
1302 | } | |
c906108c SS |
1303 | } |
1304 | ||
1305 | end_time = time (NULL); | |
1306 | { | |
917317f4 | 1307 | CORE_ADDR entry; |
c5aa993b | 1308 | entry = bfd_get_start_address (loadfile_bfd); |
8b93c638 JM |
1309 | #ifdef UI_OUT |
1310 | ui_out_text (uiout, "Start address "); | |
1311 | ui_out_field_fmt (uiout, "address", "0x%s" , paddr_nz (entry)); | |
1312 | ui_out_text (uiout, ", load size "); | |
1313 | ui_out_field_fmt (uiout, "load-size", "%ld" , data_count); | |
1314 | ui_out_text (uiout, "\n"); | |
1315 | ||
1316 | #else | |
917317f4 JM |
1317 | fprintf_unfiltered (gdb_stdout, |
1318 | "Start address 0x%s , load size %ld\n", | |
1319 | paddr_nz (entry), data_count); | |
8b93c638 | 1320 | #endif |
c906108c SS |
1321 | /* We were doing this in remote-mips.c, I suspect it is right |
1322 | for other targets too. */ | |
1323 | write_pc (entry); | |
1324 | } | |
1325 | ||
1326 | /* FIXME: are we supposed to call symbol_file_add or not? According to | |
1327 | a comment from remote-mips.c (where a call to symbol_file_add was | |
1328 | commented out), making the call confuses GDB if more than one file is | |
1329 | loaded in. remote-nindy.c had no call to symbol_file_add, but remote-vx.c | |
1330 | does. */ | |
1331 | ||
917317f4 JM |
1332 | print_transfer_performance (gdb_stdout, data_count, write_count, |
1333 | end_time - start_time); | |
c906108c SS |
1334 | |
1335 | do_cleanups (old_cleanups); | |
1336 | } | |
1337 | ||
1338 | /* Report how fast the transfer went. */ | |
1339 | ||
917317f4 JM |
1340 | /* DEPRECATED: cagney/1999-10-18: report_transfer_performance is being |
1341 | replaced by print_transfer_performance (with a very different | |
1342 | function signature). */ | |
1343 | ||
c906108c | 1344 | void |
fba45db2 KB |
1345 | report_transfer_performance (unsigned long data_count, time_t start_time, |
1346 | time_t end_time) | |
c906108c | 1347 | { |
917317f4 JM |
1348 | print_transfer_performance (gdb_stdout, data_count, end_time - start_time, 0); |
1349 | } | |
1350 | ||
1351 | void | |
d9fcf2fb | 1352 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
1353 | unsigned long data_count, |
1354 | unsigned long write_count, | |
1355 | unsigned long time_count) | |
1356 | { | |
8b93c638 JM |
1357 | #ifdef UI_OUT |
1358 | ui_out_text (uiout, "Transfer rate: "); | |
1359 | if (time_count > 0) | |
1360 | { | |
1361 | ui_out_field_fmt (uiout, "transfer-rate", "%ld", | |
1362 | (data_count * 8) / time_count); | |
1363 | ui_out_text (uiout, " bits/sec"); | |
1364 | } | |
1365 | else | |
1366 | { | |
1367 | ui_out_field_fmt (uiout, "transferred-bits", "%ld", (data_count * 8)); | |
1368 | ui_out_text (uiout, " bits in <1 sec"); | |
1369 | } | |
1370 | if (write_count > 0) | |
1371 | { | |
1372 | ui_out_text (uiout, ", "); | |
1373 | ui_out_field_fmt (uiout, "write-rate", "%ld", data_count / write_count); | |
1374 | ui_out_text (uiout, " bytes/write"); | |
1375 | } | |
1376 | ui_out_text (uiout, ".\n"); | |
1377 | #else | |
917317f4 JM |
1378 | fprintf_unfiltered (stream, "Transfer rate: "); |
1379 | if (time_count > 0) | |
1380 | fprintf_unfiltered (stream, "%ld bits/sec", (data_count * 8) / time_count); | |
c906108c | 1381 | else |
917317f4 JM |
1382 | fprintf_unfiltered (stream, "%ld bits in <1 sec", (data_count * 8)); |
1383 | if (write_count > 0) | |
1384 | fprintf_unfiltered (stream, ", %ld bytes/write", data_count / write_count); | |
1385 | fprintf_unfiltered (stream, ".\n"); | |
8b93c638 | 1386 | #endif |
c906108c SS |
1387 | } |
1388 | ||
1389 | /* This function allows the addition of incrementally linked object files. | |
1390 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
1391 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
1392 | special case syntax for the rombug target (Rombug is the boot | |
1393 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
1394 | rombug case, the user doesn't need to supply a text address, | |
1395 | instead a call to target_link() (in target.c) would supply the | |
1396 | value to use. We are now discontinuing this type of ad hoc syntax. */ | |
c906108c SS |
1397 | |
1398 | /* ARGSUSED */ | |
1399 | static void | |
fba45db2 | 1400 | add_symbol_file_command (char *args, int from_tty) |
c906108c | 1401 | { |
db162d44 | 1402 | char *filename = NULL; |
2df3850c | 1403 | int flags = OBJF_USERLOADED; |
c906108c | 1404 | char *arg; |
2acceee2 | 1405 | int expecting_option = 0; |
db162d44 | 1406 | int section_index = 0; |
2acceee2 JM |
1407 | int argcnt = 0; |
1408 | int sec_num = 0; | |
1409 | int i; | |
db162d44 EZ |
1410 | int expecting_sec_name = 0; |
1411 | int expecting_sec_addr = 0; | |
1412 | ||
2acceee2 JM |
1413 | struct |
1414 | { | |
2acceee2 JM |
1415 | char *name; |
1416 | char *value; | |
db162d44 EZ |
1417 | } sect_opts[SECT_OFF_MAX]; |
1418 | ||
2acceee2 | 1419 | struct section_addr_info section_addrs; |
db162d44 | 1420 | struct cleanup *my_cleanups; |
c5aa993b | 1421 | |
c906108c SS |
1422 | dont_repeat (); |
1423 | ||
1424 | if (args == NULL) | |
db162d44 | 1425 | error ("add-symbol-file takes a file name and an address"); |
c906108c SS |
1426 | |
1427 | /* Make a copy of the string that we can safely write into. */ | |
c2d11a7d | 1428 | args = xstrdup (args); |
c906108c | 1429 | |
2acceee2 JM |
1430 | /* Ensure section_addrs is initialized */ |
1431 | memset (§ion_addrs, 0, sizeof (section_addrs)); | |
1432 | ||
2acceee2 | 1433 | while (*args != '\000') |
c906108c | 1434 | { |
db162d44 | 1435 | /* Any leading spaces? */ |
c5aa993b | 1436 | while (isspace (*args)) |
db162d44 EZ |
1437 | args++; |
1438 | ||
1439 | /* Point arg to the beginning of the argument. */ | |
c906108c | 1440 | arg = args; |
db162d44 EZ |
1441 | |
1442 | /* Move args pointer over the argument. */ | |
c5aa993b | 1443 | while ((*args != '\000') && !isspace (*args)) |
db162d44 EZ |
1444 | args++; |
1445 | ||
1446 | /* If there are more arguments, terminate arg and | |
1447 | proceed past it. */ | |
c906108c | 1448 | if (*args != '\000') |
db162d44 EZ |
1449 | *args++ = '\000'; |
1450 | ||
1451 | /* Now process the argument. */ | |
1452 | if (argcnt == 0) | |
c906108c | 1453 | { |
db162d44 EZ |
1454 | /* The first argument is the file name. */ |
1455 | filename = tilde_expand (arg); | |
1456 | my_cleanups = make_cleanup (free, filename); | |
c906108c | 1457 | } |
db162d44 | 1458 | else |
7a78ae4e ND |
1459 | if (argcnt == 1) |
1460 | { | |
1461 | /* The second argument is always the text address at which | |
1462 | to load the program. */ | |
1463 | sect_opts[section_index].name = ".text"; | |
1464 | sect_opts[section_index].value = arg; | |
1465 | section_index++; | |
1466 | } | |
1467 | else | |
1468 | { | |
1469 | /* It's an option (starting with '-') or it's an argument | |
1470 | to an option */ | |
1471 | ||
1472 | if (*arg == '-') | |
1473 | { | |
1474 | if (strcmp (arg, "-mapped") == 0) | |
1475 | flags |= OBJF_MAPPED; | |
1476 | else | |
1477 | if (strcmp (arg, "-readnow") == 0) | |
1478 | flags |= OBJF_READNOW; | |
1479 | else | |
1480 | if (strcmp (arg, "-s") == 0) | |
1481 | { | |
1482 | if (section_index >= SECT_OFF_MAX) | |
1483 | error ("Too many sections specified."); | |
1484 | expecting_sec_name = 1; | |
1485 | expecting_sec_addr = 1; | |
1486 | } | |
1487 | } | |
1488 | else | |
1489 | { | |
1490 | if (expecting_sec_name) | |
db162d44 | 1491 | { |
7a78ae4e ND |
1492 | sect_opts[section_index].name = arg; |
1493 | expecting_sec_name = 0; | |
db162d44 EZ |
1494 | } |
1495 | else | |
7a78ae4e ND |
1496 | if (expecting_sec_addr) |
1497 | { | |
1498 | sect_opts[section_index].value = arg; | |
1499 | expecting_sec_addr = 0; | |
1500 | section_index++; | |
1501 | } | |
1502 | else | |
1503 | error ("USAGE: add-symbol-file <filename> <textaddress> [-mapped] [-readnow] [-s <secname> <addr>]*"); | |
1504 | } | |
1505 | } | |
db162d44 | 1506 | argcnt++; |
c906108c | 1507 | } |
c906108c | 1508 | |
db162d44 EZ |
1509 | /* Print the prompt for the query below. And save the arguments into |
1510 | a sect_addr_info structure to be passed around to other | |
1511 | functions. We have to split this up into separate print | |
1512 | statements because local_hex_string returns a local static | |
1513 | string. */ | |
2acceee2 | 1514 | |
db162d44 EZ |
1515 | printf_filtered ("add symbol table from file \"%s\" at\n", filename); |
1516 | for (i = 0; i < section_index; i++) | |
c906108c | 1517 | { |
db162d44 EZ |
1518 | CORE_ADDR addr; |
1519 | char *val = sect_opts[i].value; | |
1520 | char *sec = sect_opts[i].name; | |
1521 | ||
1522 | val = sect_opts[i].value; | |
1523 | if (val[0] == '0' && val[1] == 'x') | |
1524 | addr = strtoul (val+2, NULL, 16); | |
1525 | else | |
1526 | addr = strtoul (val, NULL, 10); | |
1527 | ||
db162d44 EZ |
1528 | /* Here we store the section offsets in the order they were |
1529 | entered on the command line. */ | |
1530 | section_addrs.other[sec_num].name = sec; | |
1531 | section_addrs.other[sec_num].addr = addr; | |
1532 | printf_filtered ("\t%s_addr = %s\n", | |
1533 | sec, | |
1534 | local_hex_string ((unsigned long)addr)); | |
1535 | sec_num++; | |
1536 | ||
1537 | /* The object's sections are initialized when a | |
1538 | call is made to build_objfile_section_table (objfile). | |
1539 | This happens in reread_symbols. | |
1540 | At this point, we don't know what file type this is, | |
1541 | so we can't determine what section names are valid. */ | |
2acceee2 | 1542 | } |
db162d44 | 1543 | |
2acceee2 | 1544 | if (from_tty && (!query ("%s", ""))) |
c906108c SS |
1545 | error ("Not confirmed."); |
1546 | ||
db162d44 | 1547 | symbol_file_add (filename, from_tty, §ion_addrs, 0, flags); |
c906108c SS |
1548 | |
1549 | /* Getting new symbols may change our opinion about what is | |
1550 | frameless. */ | |
1551 | reinit_frame_cache (); | |
db162d44 | 1552 | do_cleanups (my_cleanups); |
c906108c SS |
1553 | } |
1554 | \f | |
1555 | static void | |
fba45db2 | 1556 | add_shared_symbol_files_command (char *args, int from_tty) |
c906108c SS |
1557 | { |
1558 | #ifdef ADD_SHARED_SYMBOL_FILES | |
1559 | ADD_SHARED_SYMBOL_FILES (args, from_tty); | |
1560 | #else | |
1561 | error ("This command is not available in this configuration of GDB."); | |
c5aa993b | 1562 | #endif |
c906108c SS |
1563 | } |
1564 | \f | |
1565 | /* Re-read symbols if a symbol-file has changed. */ | |
1566 | void | |
fba45db2 | 1567 | reread_symbols (void) |
c906108c SS |
1568 | { |
1569 | struct objfile *objfile; | |
1570 | long new_modtime; | |
1571 | int reread_one = 0; | |
1572 | struct stat new_statbuf; | |
1573 | int res; | |
1574 | ||
1575 | /* With the addition of shared libraries, this should be modified, | |
1576 | the load time should be saved in the partial symbol tables, since | |
1577 | different tables may come from different source files. FIXME. | |
1578 | This routine should then walk down each partial symbol table | |
1579 | and see if the symbol table that it originates from has been changed */ | |
1580 | ||
c5aa993b JM |
1581 | for (objfile = object_files; objfile; objfile = objfile->next) |
1582 | { | |
1583 | if (objfile->obfd) | |
1584 | { | |
c906108c | 1585 | #ifdef IBM6000_TARGET |
c5aa993b JM |
1586 | /* If this object is from a shared library, then you should |
1587 | stat on the library name, not member name. */ | |
c906108c | 1588 | |
c5aa993b JM |
1589 | if (objfile->obfd->my_archive) |
1590 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
1591 | else | |
c906108c | 1592 | #endif |
c5aa993b JM |
1593 | res = stat (objfile->name, &new_statbuf); |
1594 | if (res != 0) | |
c906108c | 1595 | { |
c5aa993b JM |
1596 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
1597 | printf_filtered ("`%s' has disappeared; keeping its symbols.\n", | |
1598 | objfile->name); | |
1599 | continue; | |
c906108c | 1600 | } |
c5aa993b JM |
1601 | new_modtime = new_statbuf.st_mtime; |
1602 | if (new_modtime != objfile->mtime) | |
c906108c | 1603 | { |
c5aa993b JM |
1604 | struct cleanup *old_cleanups; |
1605 | struct section_offsets *offsets; | |
1606 | int num_offsets; | |
c5aa993b JM |
1607 | char *obfd_filename; |
1608 | ||
1609 | printf_filtered ("`%s' has changed; re-reading symbols.\n", | |
1610 | objfile->name); | |
1611 | ||
1612 | /* There are various functions like symbol_file_add, | |
1613 | symfile_bfd_open, syms_from_objfile, etc., which might | |
1614 | appear to do what we want. But they have various other | |
1615 | effects which we *don't* want. So we just do stuff | |
1616 | ourselves. We don't worry about mapped files (for one thing, | |
1617 | any mapped file will be out of date). */ | |
1618 | ||
1619 | /* If we get an error, blow away this objfile (not sure if | |
1620 | that is the correct response for things like shared | |
1621 | libraries). */ | |
74b7792f | 1622 | old_cleanups = make_cleanup_free_objfile (objfile); |
c5aa993b | 1623 | /* We need to do this whenever any symbols go away. */ |
74b7792f | 1624 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c5aa993b JM |
1625 | |
1626 | /* Clean up any state BFD has sitting around. We don't need | |
1627 | to close the descriptor but BFD lacks a way of closing the | |
1628 | BFD without closing the descriptor. */ | |
1629 | obfd_filename = bfd_get_filename (objfile->obfd); | |
1630 | if (!bfd_close (objfile->obfd)) | |
1631 | error ("Can't close BFD for %s: %s", objfile->name, | |
1632 | bfd_errmsg (bfd_get_error ())); | |
1633 | objfile->obfd = bfd_openr (obfd_filename, gnutarget); | |
1634 | if (objfile->obfd == NULL) | |
1635 | error ("Can't open %s to read symbols.", objfile->name); | |
1636 | /* bfd_openr sets cacheable to true, which is what we want. */ | |
1637 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
1638 | error ("Can't read symbols from %s: %s.", objfile->name, | |
1639 | bfd_errmsg (bfd_get_error ())); | |
1640 | ||
1641 | /* Save the offsets, we will nuke them with the rest of the | |
1642 | psymbol_obstack. */ | |
1643 | num_offsets = objfile->num_sections; | |
d4f3574e SS |
1644 | offsets = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); |
1645 | memcpy (offsets, objfile->section_offsets, SIZEOF_SECTION_OFFSETS); | |
c5aa993b JM |
1646 | |
1647 | /* Nuke all the state that we will re-read. Much of the following | |
1648 | code which sets things to NULL really is necessary to tell | |
1649 | other parts of GDB that there is nothing currently there. */ | |
1650 | ||
1651 | /* FIXME: Do we have to free a whole linked list, or is this | |
1652 | enough? */ | |
1653 | if (objfile->global_psymbols.list) | |
1654 | mfree (objfile->md, objfile->global_psymbols.list); | |
1655 | memset (&objfile->global_psymbols, 0, | |
1656 | sizeof (objfile->global_psymbols)); | |
1657 | if (objfile->static_psymbols.list) | |
1658 | mfree (objfile->md, objfile->static_psymbols.list); | |
1659 | memset (&objfile->static_psymbols, 0, | |
1660 | sizeof (objfile->static_psymbols)); | |
1661 | ||
1662 | /* Free the obstacks for non-reusable objfiles */ | |
c2d11a7d | 1663 | free_bcache (&objfile->psymbol_cache); |
c5aa993b JM |
1664 | obstack_free (&objfile->psymbol_obstack, 0); |
1665 | obstack_free (&objfile->symbol_obstack, 0); | |
1666 | obstack_free (&objfile->type_obstack, 0); | |
1667 | objfile->sections = NULL; | |
1668 | objfile->symtabs = NULL; | |
1669 | objfile->psymtabs = NULL; | |
1670 | objfile->free_psymtabs = NULL; | |
1671 | objfile->msymbols = NULL; | |
1672 | objfile->minimal_symbol_count = 0; | |
0a83117a MS |
1673 | memset (&objfile->msymbol_hash, 0, |
1674 | sizeof (objfile->msymbol_hash)); | |
1675 | memset (&objfile->msymbol_demangled_hash, 0, | |
1676 | sizeof (objfile->msymbol_demangled_hash)); | |
c5aa993b JM |
1677 | objfile->fundamental_types = NULL; |
1678 | if (objfile->sf != NULL) | |
1679 | { | |
1680 | (*objfile->sf->sym_finish) (objfile); | |
1681 | } | |
1682 | ||
1683 | /* We never make this a mapped file. */ | |
1684 | objfile->md = NULL; | |
1685 | /* obstack_specify_allocation also initializes the obstack so | |
1686 | it is empty. */ | |
1687 | obstack_specify_allocation (&objfile->psymbol_cache.cache, 0, 0, | |
1688 | xmalloc, free); | |
1689 | obstack_specify_allocation (&objfile->psymbol_obstack, 0, 0, | |
1690 | xmalloc, free); | |
1691 | obstack_specify_allocation (&objfile->symbol_obstack, 0, 0, | |
1692 | xmalloc, free); | |
1693 | obstack_specify_allocation (&objfile->type_obstack, 0, 0, | |
1694 | xmalloc, free); | |
1695 | if (build_objfile_section_table (objfile)) | |
1696 | { | |
1697 | error ("Can't find the file sections in `%s': %s", | |
1698 | objfile->name, bfd_errmsg (bfd_get_error ())); | |
1699 | } | |
1700 | ||
1701 | /* We use the same section offsets as from last time. I'm not | |
1702 | sure whether that is always correct for shared libraries. */ | |
1703 | objfile->section_offsets = (struct section_offsets *) | |
d4f3574e SS |
1704 | obstack_alloc (&objfile->psymbol_obstack, SIZEOF_SECTION_OFFSETS); |
1705 | memcpy (objfile->section_offsets, offsets, SIZEOF_SECTION_OFFSETS); | |
c5aa993b JM |
1706 | objfile->num_sections = num_offsets; |
1707 | ||
1708 | /* What the hell is sym_new_init for, anyway? The concept of | |
1709 | distinguishing between the main file and additional files | |
1710 | in this way seems rather dubious. */ | |
1711 | if (objfile == symfile_objfile) | |
1712 | { | |
1713 | (*objfile->sf->sym_new_init) (objfile); | |
c906108c | 1714 | #ifdef HPUXHPPA |
c5aa993b | 1715 | RESET_HP_UX_GLOBALS (); |
c906108c | 1716 | #endif |
c5aa993b JM |
1717 | } |
1718 | ||
1719 | (*objfile->sf->sym_init) (objfile); | |
1720 | clear_complaints (1, 1); | |
1721 | /* The "mainline" parameter is a hideous hack; I think leaving it | |
1722 | zero is OK since dbxread.c also does what it needs to do if | |
1723 | objfile->global_psymbols.size is 0. */ | |
96baa820 | 1724 | (*objfile->sf->sym_read) (objfile, 0); |
c5aa993b JM |
1725 | if (!have_partial_symbols () && !have_full_symbols ()) |
1726 | { | |
1727 | wrap_here (""); | |
1728 | printf_filtered ("(no debugging symbols found)\n"); | |
1729 | wrap_here (""); | |
1730 | } | |
1731 | objfile->flags |= OBJF_SYMS; | |
1732 | ||
1733 | /* We're done reading the symbol file; finish off complaints. */ | |
1734 | clear_complaints (0, 1); | |
c906108c | 1735 | |
c5aa993b JM |
1736 | /* Getting new symbols may change our opinion about what is |
1737 | frameless. */ | |
c906108c | 1738 | |
c5aa993b | 1739 | reinit_frame_cache (); |
c906108c | 1740 | |
c5aa993b JM |
1741 | /* Discard cleanups as symbol reading was successful. */ |
1742 | discard_cleanups (old_cleanups); | |
c906108c | 1743 | |
c5aa993b JM |
1744 | /* If the mtime has changed between the time we set new_modtime |
1745 | and now, we *want* this to be out of date, so don't call stat | |
1746 | again now. */ | |
1747 | objfile->mtime = new_modtime; | |
1748 | reread_one = 1; | |
c906108c | 1749 | |
c5aa993b | 1750 | /* Call this after reading in a new symbol table to give target |
38c2ef12 | 1751 | dependent code a crack at the new symbols. For instance, this |
c5aa993b JM |
1752 | could be used to update the values of target-specific symbols GDB |
1753 | needs to keep track of (such as _sigtramp, or whatever). */ | |
c906108c | 1754 | |
c5aa993b JM |
1755 | TARGET_SYMFILE_POSTREAD (objfile); |
1756 | } | |
c906108c SS |
1757 | } |
1758 | } | |
c906108c SS |
1759 | |
1760 | if (reread_one) | |
1761 | clear_symtab_users (); | |
1762 | } | |
c906108c SS |
1763 | \f |
1764 | ||
c5aa993b JM |
1765 | |
1766 | typedef struct | |
1767 | { | |
1768 | char *ext; | |
c906108c | 1769 | enum language lang; |
c5aa993b JM |
1770 | } |
1771 | filename_language; | |
c906108c | 1772 | |
c5aa993b | 1773 | static filename_language *filename_language_table; |
c906108c SS |
1774 | static int fl_table_size, fl_table_next; |
1775 | ||
1776 | static void | |
fba45db2 | 1777 | add_filename_language (char *ext, enum language lang) |
c906108c SS |
1778 | { |
1779 | if (fl_table_next >= fl_table_size) | |
1780 | { | |
1781 | fl_table_size += 10; | |
c5aa993b | 1782 | filename_language_table = realloc (filename_language_table, |
c906108c SS |
1783 | fl_table_size); |
1784 | } | |
1785 | ||
c5aa993b | 1786 | filename_language_table[fl_table_next].ext = strsave (ext); |
c906108c SS |
1787 | filename_language_table[fl_table_next].lang = lang; |
1788 | fl_table_next++; | |
1789 | } | |
1790 | ||
1791 | static char *ext_args; | |
1792 | ||
1793 | static void | |
fba45db2 | 1794 | set_ext_lang_command (char *args, int from_tty) |
c906108c SS |
1795 | { |
1796 | int i; | |
1797 | char *cp = ext_args; | |
1798 | enum language lang; | |
1799 | ||
1800 | /* First arg is filename extension, starting with '.' */ | |
1801 | if (*cp != '.') | |
1802 | error ("'%s': Filename extension must begin with '.'", ext_args); | |
1803 | ||
1804 | /* Find end of first arg. */ | |
c5aa993b | 1805 | while (*cp && !isspace (*cp)) |
c906108c SS |
1806 | cp++; |
1807 | ||
1808 | if (*cp == '\0') | |
1809 | error ("'%s': two arguments required -- filename extension and language", | |
1810 | ext_args); | |
1811 | ||
1812 | /* Null-terminate first arg */ | |
c5aa993b | 1813 | *cp++ = '\0'; |
c906108c SS |
1814 | |
1815 | /* Find beginning of second arg, which should be a source language. */ | |
1816 | while (*cp && isspace (*cp)) | |
1817 | cp++; | |
1818 | ||
1819 | if (*cp == '\0') | |
1820 | error ("'%s': two arguments required -- filename extension and language", | |
1821 | ext_args); | |
1822 | ||
1823 | /* Lookup the language from among those we know. */ | |
1824 | lang = language_enum (cp); | |
1825 | ||
1826 | /* Now lookup the filename extension: do we already know it? */ | |
1827 | for (i = 0; i < fl_table_next; i++) | |
1828 | if (0 == strcmp (ext_args, filename_language_table[i].ext)) | |
1829 | break; | |
1830 | ||
1831 | if (i >= fl_table_next) | |
1832 | { | |
1833 | /* new file extension */ | |
1834 | add_filename_language (ext_args, lang); | |
1835 | } | |
1836 | else | |
1837 | { | |
1838 | /* redefining a previously known filename extension */ | |
1839 | ||
1840 | /* if (from_tty) */ | |
1841 | /* query ("Really make files of type %s '%s'?", */ | |
1842 | /* ext_args, language_str (lang)); */ | |
1843 | ||
1844 | free (filename_language_table[i].ext); | |
c5aa993b | 1845 | filename_language_table[i].ext = strsave (ext_args); |
c906108c SS |
1846 | filename_language_table[i].lang = lang; |
1847 | } | |
1848 | } | |
1849 | ||
1850 | static void | |
fba45db2 | 1851 | info_ext_lang_command (char *args, int from_tty) |
c906108c SS |
1852 | { |
1853 | int i; | |
1854 | ||
1855 | printf_filtered ("Filename extensions and the languages they represent:"); | |
1856 | printf_filtered ("\n\n"); | |
1857 | for (i = 0; i < fl_table_next; i++) | |
c5aa993b JM |
1858 | printf_filtered ("\t%s\t- %s\n", |
1859 | filename_language_table[i].ext, | |
c906108c SS |
1860 | language_str (filename_language_table[i].lang)); |
1861 | } | |
1862 | ||
1863 | static void | |
fba45db2 | 1864 | init_filename_language_table (void) |
c906108c SS |
1865 | { |
1866 | if (fl_table_size == 0) /* protect against repetition */ | |
1867 | { | |
1868 | fl_table_size = 20; | |
1869 | fl_table_next = 0; | |
c5aa993b | 1870 | filename_language_table = |
c906108c | 1871 | xmalloc (fl_table_size * sizeof (*filename_language_table)); |
c5aa993b JM |
1872 | add_filename_language (".c", language_c); |
1873 | add_filename_language (".C", language_cplus); | |
1874 | add_filename_language (".cc", language_cplus); | |
1875 | add_filename_language (".cp", language_cplus); | |
1876 | add_filename_language (".cpp", language_cplus); | |
1877 | add_filename_language (".cxx", language_cplus); | |
1878 | add_filename_language (".c++", language_cplus); | |
1879 | add_filename_language (".java", language_java); | |
c906108c | 1880 | add_filename_language (".class", language_java); |
c5aa993b JM |
1881 | add_filename_language (".ch", language_chill); |
1882 | add_filename_language (".c186", language_chill); | |
1883 | add_filename_language (".c286", language_chill); | |
1884 | add_filename_language (".f", language_fortran); | |
1885 | add_filename_language (".F", language_fortran); | |
1886 | add_filename_language (".s", language_asm); | |
1887 | add_filename_language (".S", language_asm); | |
c6fd39cd PM |
1888 | add_filename_language (".pas", language_pascal); |
1889 | add_filename_language (".p", language_pascal); | |
1890 | add_filename_language (".pp", language_pascal); | |
c906108c SS |
1891 | } |
1892 | } | |
1893 | ||
1894 | enum language | |
fba45db2 | 1895 | deduce_language_from_filename (char *filename) |
c906108c SS |
1896 | { |
1897 | int i; | |
1898 | char *cp; | |
1899 | ||
1900 | if (filename != NULL) | |
1901 | if ((cp = strrchr (filename, '.')) != NULL) | |
1902 | for (i = 0; i < fl_table_next; i++) | |
1903 | if (strcmp (cp, filename_language_table[i].ext) == 0) | |
1904 | return filename_language_table[i].lang; | |
1905 | ||
1906 | return language_unknown; | |
1907 | } | |
1908 | \f | |
1909 | /* allocate_symtab: | |
1910 | ||
1911 | Allocate and partly initialize a new symbol table. Return a pointer | |
1912 | to it. error() if no space. | |
1913 | ||
1914 | Caller must set these fields: | |
c5aa993b JM |
1915 | LINETABLE(symtab) |
1916 | symtab->blockvector | |
1917 | symtab->dirname | |
1918 | symtab->free_code | |
1919 | symtab->free_ptr | |
1920 | possibly free_named_symtabs (symtab->filename); | |
c906108c SS |
1921 | */ |
1922 | ||
1923 | struct symtab * | |
fba45db2 | 1924 | allocate_symtab (char *filename, struct objfile *objfile) |
c906108c SS |
1925 | { |
1926 | register struct symtab *symtab; | |
1927 | ||
1928 | symtab = (struct symtab *) | |
c5aa993b | 1929 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct symtab)); |
c906108c | 1930 | memset (symtab, 0, sizeof (*symtab)); |
c5aa993b JM |
1931 | symtab->filename = obsavestring (filename, strlen (filename), |
1932 | &objfile->symbol_obstack); | |
1933 | symtab->fullname = NULL; | |
1934 | symtab->language = deduce_language_from_filename (filename); | |
1935 | symtab->debugformat = obsavestring ("unknown", 7, | |
1936 | &objfile->symbol_obstack); | |
c906108c SS |
1937 | |
1938 | /* Hook it to the objfile it comes from */ | |
1939 | ||
c5aa993b JM |
1940 | symtab->objfile = objfile; |
1941 | symtab->next = objfile->symtabs; | |
1942 | objfile->symtabs = symtab; | |
c906108c SS |
1943 | |
1944 | /* FIXME: This should go away. It is only defined for the Z8000, | |
1945 | and the Z8000 definition of this macro doesn't have anything to | |
1946 | do with the now-nonexistent EXTRA_SYMTAB_INFO macro, it's just | |
1947 | here for convenience. */ | |
1948 | #ifdef INIT_EXTRA_SYMTAB_INFO | |
1949 | INIT_EXTRA_SYMTAB_INFO (symtab); | |
1950 | #endif | |
1951 | ||
1952 | return (symtab); | |
1953 | } | |
1954 | ||
1955 | struct partial_symtab * | |
fba45db2 | 1956 | allocate_psymtab (char *filename, struct objfile *objfile) |
c906108c SS |
1957 | { |
1958 | struct partial_symtab *psymtab; | |
1959 | ||
c5aa993b | 1960 | if (objfile->free_psymtabs) |
c906108c | 1961 | { |
c5aa993b JM |
1962 | psymtab = objfile->free_psymtabs; |
1963 | objfile->free_psymtabs = psymtab->next; | |
c906108c SS |
1964 | } |
1965 | else | |
1966 | psymtab = (struct partial_symtab *) | |
c5aa993b | 1967 | obstack_alloc (&objfile->psymbol_obstack, |
c906108c SS |
1968 | sizeof (struct partial_symtab)); |
1969 | ||
1970 | memset (psymtab, 0, sizeof (struct partial_symtab)); | |
c5aa993b JM |
1971 | psymtab->filename = obsavestring (filename, strlen (filename), |
1972 | &objfile->psymbol_obstack); | |
1973 | psymtab->symtab = NULL; | |
c906108c SS |
1974 | |
1975 | /* Prepend it to the psymtab list for the objfile it belongs to. | |
1976 | Psymtabs are searched in most recent inserted -> least recent | |
1977 | inserted order. */ | |
1978 | ||
c5aa993b JM |
1979 | psymtab->objfile = objfile; |
1980 | psymtab->next = objfile->psymtabs; | |
1981 | objfile->psymtabs = psymtab; | |
c906108c SS |
1982 | #if 0 |
1983 | { | |
1984 | struct partial_symtab **prev_pst; | |
c5aa993b JM |
1985 | psymtab->objfile = objfile; |
1986 | psymtab->next = NULL; | |
1987 | prev_pst = &(objfile->psymtabs); | |
c906108c | 1988 | while ((*prev_pst) != NULL) |
c5aa993b | 1989 | prev_pst = &((*prev_pst)->next); |
c906108c | 1990 | (*prev_pst) = psymtab; |
c5aa993b | 1991 | } |
c906108c | 1992 | #endif |
c5aa993b | 1993 | |
c906108c SS |
1994 | return (psymtab); |
1995 | } | |
1996 | ||
1997 | void | |
fba45db2 | 1998 | discard_psymtab (struct partial_symtab *pst) |
c906108c SS |
1999 | { |
2000 | struct partial_symtab **prev_pst; | |
2001 | ||
2002 | /* From dbxread.c: | |
2003 | Empty psymtabs happen as a result of header files which don't | |
2004 | have any symbols in them. There can be a lot of them. But this | |
2005 | check is wrong, in that a psymtab with N_SLINE entries but | |
2006 | nothing else is not empty, but we don't realize that. Fixing | |
2007 | that without slowing things down might be tricky. */ | |
2008 | ||
2009 | /* First, snip it out of the psymtab chain */ | |
2010 | ||
2011 | prev_pst = &(pst->objfile->psymtabs); | |
2012 | while ((*prev_pst) != pst) | |
2013 | prev_pst = &((*prev_pst)->next); | |
2014 | (*prev_pst) = pst->next; | |
2015 | ||
2016 | /* Next, put it on a free list for recycling */ | |
2017 | ||
2018 | pst->next = pst->objfile->free_psymtabs; | |
2019 | pst->objfile->free_psymtabs = pst; | |
2020 | } | |
c906108c | 2021 | \f |
c5aa993b | 2022 | |
c906108c SS |
2023 | /* Reset all data structures in gdb which may contain references to symbol |
2024 | table data. */ | |
2025 | ||
2026 | void | |
fba45db2 | 2027 | clear_symtab_users (void) |
c906108c SS |
2028 | { |
2029 | /* Someday, we should do better than this, by only blowing away | |
2030 | the things that really need to be blown. */ | |
2031 | clear_value_history (); | |
2032 | clear_displays (); | |
2033 | clear_internalvars (); | |
2034 | breakpoint_re_set (); | |
2035 | set_default_breakpoint (0, 0, 0, 0); | |
2036 | current_source_symtab = 0; | |
2037 | current_source_line = 0; | |
2038 | clear_pc_function_cache (); | |
11cf8741 JM |
2039 | if (target_new_objfile_hook) |
2040 | target_new_objfile_hook (NULL); | |
c906108c SS |
2041 | } |
2042 | ||
74b7792f AC |
2043 | static void |
2044 | clear_symtab_users_cleanup (void *ignore) | |
2045 | { | |
2046 | clear_symtab_users (); | |
2047 | } | |
2048 | ||
c906108c SS |
2049 | /* clear_symtab_users_once: |
2050 | ||
2051 | This function is run after symbol reading, or from a cleanup. | |
2052 | If an old symbol table was obsoleted, the old symbol table | |
2053 | has been blown away, but the other GDB data structures that may | |
2054 | reference it have not yet been cleared or re-directed. (The old | |
2055 | symtab was zapped, and the cleanup queued, in free_named_symtab() | |
2056 | below.) | |
2057 | ||
2058 | This function can be queued N times as a cleanup, or called | |
2059 | directly; it will do all the work the first time, and then will be a | |
2060 | no-op until the next time it is queued. This works by bumping a | |
2061 | counter at queueing time. Much later when the cleanup is run, or at | |
2062 | the end of symbol processing (in case the cleanup is discarded), if | |
2063 | the queued count is greater than the "done-count", we do the work | |
2064 | and set the done-count to the queued count. If the queued count is | |
2065 | less than or equal to the done-count, we just ignore the call. This | |
2066 | is needed because reading a single .o file will often replace many | |
2067 | symtabs (one per .h file, for example), and we don't want to reset | |
2068 | the breakpoints N times in the user's face. | |
2069 | ||
2070 | The reason we both queue a cleanup, and call it directly after symbol | |
2071 | reading, is because the cleanup protects us in case of errors, but is | |
2072 | discarded if symbol reading is successful. */ | |
2073 | ||
2074 | #if 0 | |
2075 | /* FIXME: As free_named_symtabs is currently a big noop this function | |
2076 | is no longer needed. */ | |
a14ed312 | 2077 | static void clear_symtab_users_once (void); |
c906108c SS |
2078 | |
2079 | static int clear_symtab_users_queued; | |
2080 | static int clear_symtab_users_done; | |
2081 | ||
2082 | static void | |
fba45db2 | 2083 | clear_symtab_users_once (void) |
c906108c SS |
2084 | { |
2085 | /* Enforce once-per-`do_cleanups'-semantics */ | |
2086 | if (clear_symtab_users_queued <= clear_symtab_users_done) | |
2087 | return; | |
2088 | clear_symtab_users_done = clear_symtab_users_queued; | |
2089 | ||
2090 | clear_symtab_users (); | |
2091 | } | |
2092 | #endif | |
2093 | ||
2094 | /* Delete the specified psymtab, and any others that reference it. */ | |
2095 | ||
2096 | static void | |
fba45db2 | 2097 | cashier_psymtab (struct partial_symtab *pst) |
c906108c SS |
2098 | { |
2099 | struct partial_symtab *ps, *pprev = NULL; | |
2100 | int i; | |
2101 | ||
2102 | /* Find its previous psymtab in the chain */ | |
c5aa993b JM |
2103 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) |
2104 | { | |
2105 | if (ps == pst) | |
2106 | break; | |
2107 | pprev = ps; | |
2108 | } | |
c906108c | 2109 | |
c5aa993b JM |
2110 | if (ps) |
2111 | { | |
2112 | /* Unhook it from the chain. */ | |
2113 | if (ps == pst->objfile->psymtabs) | |
2114 | pst->objfile->psymtabs = ps->next; | |
2115 | else | |
2116 | pprev->next = ps->next; | |
2117 | ||
2118 | /* FIXME, we can't conveniently deallocate the entries in the | |
2119 | partial_symbol lists (global_psymbols/static_psymbols) that | |
2120 | this psymtab points to. These just take up space until all | |
2121 | the psymtabs are reclaimed. Ditto the dependencies list and | |
2122 | filename, which are all in the psymbol_obstack. */ | |
2123 | ||
2124 | /* We need to cashier any psymtab that has this one as a dependency... */ | |
2125 | again: | |
2126 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) | |
2127 | { | |
2128 | for (i = 0; i < ps->number_of_dependencies; i++) | |
2129 | { | |
2130 | if (ps->dependencies[i] == pst) | |
2131 | { | |
2132 | cashier_psymtab (ps); | |
2133 | goto again; /* Must restart, chain has been munged. */ | |
2134 | } | |
2135 | } | |
c906108c | 2136 | } |
c906108c | 2137 | } |
c906108c SS |
2138 | } |
2139 | ||
2140 | /* If a symtab or psymtab for filename NAME is found, free it along | |
2141 | with any dependent breakpoints, displays, etc. | |
2142 | Used when loading new versions of object modules with the "add-file" | |
2143 | command. This is only called on the top-level symtab or psymtab's name; | |
2144 | it is not called for subsidiary files such as .h files. | |
2145 | ||
2146 | Return value is 1 if we blew away the environment, 0 if not. | |
7e73cedf | 2147 | FIXME. The return value appears to never be used. |
c906108c SS |
2148 | |
2149 | FIXME. I think this is not the best way to do this. We should | |
2150 | work on being gentler to the environment while still cleaning up | |
2151 | all stray pointers into the freed symtab. */ | |
2152 | ||
2153 | int | |
fba45db2 | 2154 | free_named_symtabs (char *name) |
c906108c SS |
2155 | { |
2156 | #if 0 | |
2157 | /* FIXME: With the new method of each objfile having it's own | |
2158 | psymtab list, this function needs serious rethinking. In particular, | |
2159 | why was it ever necessary to toss psymtabs with specific compilation | |
2160 | unit filenames, as opposed to all psymtabs from a particular symbol | |
2161 | file? -- fnf | |
2162 | Well, the answer is that some systems permit reloading of particular | |
2163 | compilation units. We want to blow away any old info about these | |
2164 | compilation units, regardless of which objfiles they arrived in. --gnu. */ | |
2165 | ||
2166 | register struct symtab *s; | |
2167 | register struct symtab *prev; | |
2168 | register struct partial_symtab *ps; | |
2169 | struct blockvector *bv; | |
2170 | int blewit = 0; | |
2171 | ||
2172 | /* We only wack things if the symbol-reload switch is set. */ | |
2173 | if (!symbol_reloading) | |
2174 | return 0; | |
2175 | ||
2176 | /* Some symbol formats have trouble providing file names... */ | |
2177 | if (name == 0 || *name == '\0') | |
2178 | return 0; | |
2179 | ||
2180 | /* Look for a psymtab with the specified name. */ | |
2181 | ||
2182 | again2: | |
c5aa993b JM |
2183 | for (ps = partial_symtab_list; ps; ps = ps->next) |
2184 | { | |
2185 | if (STREQ (name, ps->filename)) | |
2186 | { | |
2187 | cashier_psymtab (ps); /* Blow it away...and its little dog, too. */ | |
2188 | goto again2; /* Must restart, chain has been munged */ | |
2189 | } | |
c906108c | 2190 | } |
c906108c SS |
2191 | |
2192 | /* Look for a symtab with the specified name. */ | |
2193 | ||
2194 | for (s = symtab_list; s; s = s->next) | |
2195 | { | |
2196 | if (STREQ (name, s->filename)) | |
2197 | break; | |
2198 | prev = s; | |
2199 | } | |
2200 | ||
2201 | if (s) | |
2202 | { | |
2203 | if (s == symtab_list) | |
2204 | symtab_list = s->next; | |
2205 | else | |
2206 | prev->next = s->next; | |
2207 | ||
2208 | /* For now, queue a delete for all breakpoints, displays, etc., whether | |
c5aa993b JM |
2209 | or not they depend on the symtab being freed. This should be |
2210 | changed so that only those data structures affected are deleted. */ | |
c906108c SS |
2211 | |
2212 | /* But don't delete anything if the symtab is empty. | |
c5aa993b JM |
2213 | This test is necessary due to a bug in "dbxread.c" that |
2214 | causes empty symtabs to be created for N_SO symbols that | |
2215 | contain the pathname of the object file. (This problem | |
2216 | has been fixed in GDB 3.9x). */ | |
c906108c SS |
2217 | |
2218 | bv = BLOCKVECTOR (s); | |
2219 | if (BLOCKVECTOR_NBLOCKS (bv) > 2 | |
2220 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) | |
2221 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK))) | |
2222 | { | |
2223 | complain (&oldsyms_complaint, name); | |
2224 | ||
2225 | clear_symtab_users_queued++; | |
2226 | make_cleanup (clear_symtab_users_once, 0); | |
2227 | blewit = 1; | |
c5aa993b JM |
2228 | } |
2229 | else | |
2230 | { | |
c906108c SS |
2231 | complain (&empty_symtab_complaint, name); |
2232 | } | |
2233 | ||
2234 | free_symtab (s); | |
2235 | } | |
2236 | else | |
2237 | { | |
2238 | /* It is still possible that some breakpoints will be affected | |
c5aa993b JM |
2239 | even though no symtab was found, since the file might have |
2240 | been compiled without debugging, and hence not be associated | |
2241 | with a symtab. In order to handle this correctly, we would need | |
2242 | to keep a list of text address ranges for undebuggable files. | |
2243 | For now, we do nothing, since this is a fairly obscure case. */ | |
c906108c SS |
2244 | ; |
2245 | } | |
2246 | ||
2247 | /* FIXME, what about the minimal symbol table? */ | |
2248 | return blewit; | |
2249 | #else | |
2250 | return (0); | |
2251 | #endif | |
2252 | } | |
2253 | \f | |
2254 | /* Allocate and partially fill a partial symtab. It will be | |
2255 | completely filled at the end of the symbol list. | |
2256 | ||
d4f3574e | 2257 | FILENAME is the name of the symbol-file we are reading from. */ |
c906108c SS |
2258 | |
2259 | struct partial_symtab * | |
fba45db2 KB |
2260 | start_psymtab_common (struct objfile *objfile, |
2261 | struct section_offsets *section_offsets, char *filename, | |
2262 | CORE_ADDR textlow, struct partial_symbol **global_syms, | |
2263 | struct partial_symbol **static_syms) | |
c906108c SS |
2264 | { |
2265 | struct partial_symtab *psymtab; | |
2266 | ||
2267 | psymtab = allocate_psymtab (filename, objfile); | |
c5aa993b JM |
2268 | psymtab->section_offsets = section_offsets; |
2269 | psymtab->textlow = textlow; | |
2270 | psymtab->texthigh = psymtab->textlow; /* default */ | |
2271 | psymtab->globals_offset = global_syms - objfile->global_psymbols.list; | |
2272 | psymtab->statics_offset = static_syms - objfile->static_psymbols.list; | |
c906108c SS |
2273 | return (psymtab); |
2274 | } | |
2275 | \f | |
2276 | /* Add a symbol with a long value to a psymtab. | |
2277 | Since one arg is a struct, we pass in a ptr and deref it (sigh). */ | |
2278 | ||
2279 | void | |
fba45db2 KB |
2280 | add_psymbol_to_list (char *name, int namelength, namespace_enum namespace, |
2281 | enum address_class class, | |
2282 | struct psymbol_allocation_list *list, long val, /* Value as a long */ | |
2283 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ | |
2284 | enum language language, struct objfile *objfile) | |
c906108c SS |
2285 | { |
2286 | register struct partial_symbol *psym; | |
2287 | char *buf = alloca (namelength + 1); | |
2288 | /* psymbol is static so that there will be no uninitialized gaps in the | |
2289 | structure which might contain random data, causing cache misses in | |
2290 | bcache. */ | |
2291 | static struct partial_symbol psymbol; | |
2292 | ||
2293 | /* Create local copy of the partial symbol */ | |
2294 | memcpy (buf, name, namelength); | |
2295 | buf[namelength] = '\0'; | |
2296 | SYMBOL_NAME (&psymbol) = bcache (buf, namelength + 1, &objfile->psymbol_cache); | |
2297 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ | |
2298 | if (val != 0) | |
2299 | { | |
2300 | SYMBOL_VALUE (&psymbol) = val; | |
2301 | } | |
2302 | else | |
2303 | { | |
2304 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; | |
2305 | } | |
2306 | SYMBOL_SECTION (&psymbol) = 0; | |
2307 | SYMBOL_LANGUAGE (&psymbol) = language; | |
2308 | PSYMBOL_NAMESPACE (&psymbol) = namespace; | |
2309 | PSYMBOL_CLASS (&psymbol) = class; | |
2310 | SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol, language); | |
2311 | ||
2312 | /* Stash the partial symbol away in the cache */ | |
2313 | psym = bcache (&psymbol, sizeof (struct partial_symbol), &objfile->psymbol_cache); | |
2314 | ||
2315 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ | |
2316 | if (list->next >= list->list + list->size) | |
2317 | { | |
2318 | extend_psymbol_list (list, objfile); | |
2319 | } | |
2320 | *list->next++ = psym; | |
2321 | OBJSTAT (objfile, n_psyms++); | |
2322 | } | |
2323 | ||
2324 | /* Add a symbol with a long value to a psymtab. This differs from | |
2325 | * add_psymbol_to_list above in taking both a mangled and a demangled | |
2326 | * name. */ | |
2327 | ||
2328 | void | |
fba45db2 KB |
2329 | add_psymbol_with_dem_name_to_list (char *name, int namelength, char *dem_name, |
2330 | int dem_namelength, namespace_enum namespace, | |
2331 | enum address_class class, | |
2332 | struct psymbol_allocation_list *list, long val, /* Value as a long */ | |
2333 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ | |
2334 | enum language language, | |
2335 | struct objfile *objfile) | |
c906108c SS |
2336 | { |
2337 | register struct partial_symbol *psym; | |
2338 | char *buf = alloca (namelength + 1); | |
2339 | /* psymbol is static so that there will be no uninitialized gaps in the | |
2340 | structure which might contain random data, causing cache misses in | |
2341 | bcache. */ | |
2342 | static struct partial_symbol psymbol; | |
2343 | ||
2344 | /* Create local copy of the partial symbol */ | |
2345 | ||
2346 | memcpy (buf, name, namelength); | |
2347 | buf[namelength] = '\0'; | |
2348 | SYMBOL_NAME (&psymbol) = bcache (buf, namelength + 1, &objfile->psymbol_cache); | |
2349 | ||
2350 | buf = alloca (dem_namelength + 1); | |
2351 | memcpy (buf, dem_name, dem_namelength); | |
2352 | buf[dem_namelength] = '\0'; | |
c5aa993b | 2353 | |
c906108c SS |
2354 | switch (language) |
2355 | { | |
c5aa993b JM |
2356 | case language_c: |
2357 | case language_cplus: | |
2358 | SYMBOL_CPLUS_DEMANGLED_NAME (&psymbol) = | |
2359 | bcache (buf, dem_namelength + 1, &objfile->psymbol_cache); | |
2360 | break; | |
2361 | case language_chill: | |
2362 | SYMBOL_CHILL_DEMANGLED_NAME (&psymbol) = | |
2363 | bcache (buf, dem_namelength + 1, &objfile->psymbol_cache); | |
2364 | ||
c906108c SS |
2365 | /* FIXME What should be done for the default case? Ignoring for now. */ |
2366 | } | |
2367 | ||
2368 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ | |
2369 | if (val != 0) | |
2370 | { | |
2371 | SYMBOL_VALUE (&psymbol) = val; | |
2372 | } | |
2373 | else | |
2374 | { | |
2375 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; | |
2376 | } | |
2377 | SYMBOL_SECTION (&psymbol) = 0; | |
2378 | SYMBOL_LANGUAGE (&psymbol) = language; | |
2379 | PSYMBOL_NAMESPACE (&psymbol) = namespace; | |
2380 | PSYMBOL_CLASS (&psymbol) = class; | |
2381 | SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol, language); | |
2382 | ||
2383 | /* Stash the partial symbol away in the cache */ | |
2384 | psym = bcache (&psymbol, sizeof (struct partial_symbol), &objfile->psymbol_cache); | |
2385 | ||
2386 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ | |
2387 | if (list->next >= list->list + list->size) | |
2388 | { | |
2389 | extend_psymbol_list (list, objfile); | |
2390 | } | |
2391 | *list->next++ = psym; | |
2392 | OBJSTAT (objfile, n_psyms++); | |
2393 | } | |
2394 | ||
2395 | /* Initialize storage for partial symbols. */ | |
2396 | ||
2397 | void | |
fba45db2 | 2398 | init_psymbol_list (struct objfile *objfile, int total_symbols) |
c906108c SS |
2399 | { |
2400 | /* Free any previously allocated psymbol lists. */ | |
c5aa993b JM |
2401 | |
2402 | if (objfile->global_psymbols.list) | |
c906108c | 2403 | { |
c5aa993b | 2404 | mfree (objfile->md, (PTR) objfile->global_psymbols.list); |
c906108c | 2405 | } |
c5aa993b | 2406 | if (objfile->static_psymbols.list) |
c906108c | 2407 | { |
c5aa993b | 2408 | mfree (objfile->md, (PTR) objfile->static_psymbols.list); |
c906108c | 2409 | } |
c5aa993b | 2410 | |
c906108c SS |
2411 | /* Current best guess is that approximately a twentieth |
2412 | of the total symbols (in a debugging file) are global or static | |
2413 | oriented symbols */ | |
c906108c | 2414 | |
c5aa993b JM |
2415 | objfile->global_psymbols.size = total_symbols / 10; |
2416 | objfile->static_psymbols.size = total_symbols / 10; | |
2417 | ||
2418 | if (objfile->global_psymbols.size > 0) | |
c906108c | 2419 | { |
c5aa993b JM |
2420 | objfile->global_psymbols.next = |
2421 | objfile->global_psymbols.list = (struct partial_symbol **) | |
2422 | xmmalloc (objfile->md, (objfile->global_psymbols.size | |
2423 | * sizeof (struct partial_symbol *))); | |
c906108c | 2424 | } |
c5aa993b | 2425 | if (objfile->static_psymbols.size > 0) |
c906108c | 2426 | { |
c5aa993b JM |
2427 | objfile->static_psymbols.next = |
2428 | objfile->static_psymbols.list = (struct partial_symbol **) | |
2429 | xmmalloc (objfile->md, (objfile->static_psymbols.size | |
2430 | * sizeof (struct partial_symbol *))); | |
c906108c SS |
2431 | } |
2432 | } | |
2433 | ||
2434 | /* OVERLAYS: | |
2435 | The following code implements an abstraction for debugging overlay sections. | |
2436 | ||
2437 | The target model is as follows: | |
2438 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2439 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2440 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2441 | sections, one by one, from the load address into the VMA address. |
c906108c | 2442 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2443 | sections should be considered to be mapped from the VMA to the LMA. |
2444 | This information is used for symbol lookup, and memory read/write. | |
2445 | For instance, if a section has been mapped then its contents | |
2446 | should be read from the VMA, otherwise from the LMA. | |
c906108c SS |
2447 | |
2448 | Two levels of debugger support for overlays are available. One is | |
2449 | "manual", in which the debugger relies on the user to tell it which | |
2450 | overlays are currently mapped. This level of support is | |
2451 | implemented entirely in the core debugger, and the information about | |
2452 | whether a section is mapped is kept in the objfile->obj_section table. | |
2453 | ||
2454 | The second level of support is "automatic", and is only available if | |
2455 | the target-specific code provides functionality to read the target's | |
2456 | overlay mapping table, and translate its contents for the debugger | |
2457 | (by updating the mapped state information in the obj_section tables). | |
2458 | ||
2459 | The interface is as follows: | |
c5aa993b JM |
2460 | User commands: |
2461 | overlay map <name> -- tell gdb to consider this section mapped | |
2462 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2463 | overlay list -- list the sections that GDB thinks are mapped | |
2464 | overlay read-target -- get the target's state of what's mapped | |
2465 | overlay off/manual/auto -- set overlay debugging state | |
2466 | Functional interface: | |
2467 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2468 | section, return that section. | |
2469 | find_pc_overlay(pc): find any overlay section that contains | |
2470 | the pc, either in its VMA or its LMA | |
2471 | overlay_is_mapped(sect): true if overlay is marked as mapped | |
2472 | section_is_overlay(sect): true if section's VMA != LMA | |
2473 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2474 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
2475 | overlay_mapped_address(...): map an address from section's LMA to VMA | |
2476 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2477 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2478 | either in VMA or LMA depending on whether | |
2479 | the symbol's section is currently mapped | |
c906108c SS |
2480 | */ |
2481 | ||
2482 | /* Overlay debugging state: */ | |
2483 | ||
2484 | int overlay_debugging = 0; /* 0 == off, 1 == manual, -1 == auto */ | |
2485 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state */ | |
2486 | ||
2487 | /* Target vector for refreshing overlay mapped state */ | |
a14ed312 | 2488 | static void simple_overlay_update (struct obj_section *); |
507f3c78 | 2489 | void (*target_overlay_update) (struct obj_section *) = simple_overlay_update; |
c906108c SS |
2490 | |
2491 | /* Function: section_is_overlay (SECTION) | |
2492 | Returns true if SECTION has VMA not equal to LMA, ie. | |
2493 | SECTION is loaded at an address different from where it will "run". */ | |
2494 | ||
2495 | int | |
fba45db2 | 2496 | section_is_overlay (asection *section) |
c906108c SS |
2497 | { |
2498 | if (overlay_debugging) | |
2499 | if (section && section->lma != 0 && | |
2500 | section->vma != section->lma) | |
2501 | return 1; | |
2502 | ||
2503 | return 0; | |
2504 | } | |
2505 | ||
2506 | /* Function: overlay_invalidate_all (void) | |
2507 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
2508 | ||
2509 | static void | |
fba45db2 | 2510 | overlay_invalidate_all (void) |
c906108c | 2511 | { |
c5aa993b | 2512 | struct objfile *objfile; |
c906108c SS |
2513 | struct obj_section *sect; |
2514 | ||
2515 | ALL_OBJSECTIONS (objfile, sect) | |
2516 | if (section_is_overlay (sect->the_bfd_section)) | |
c5aa993b | 2517 | sect->ovly_mapped = -1; |
c906108c SS |
2518 | } |
2519 | ||
2520 | /* Function: overlay_is_mapped (SECTION) | |
2521 | Returns true if section is an overlay, and is currently mapped. | |
2522 | Private: public access is thru function section_is_mapped. | |
2523 | ||
2524 | Access to the ovly_mapped flag is restricted to this function, so | |
2525 | that we can do automatic update. If the global flag | |
2526 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
2527 | overlay_invalidate_all. If the mapped state of the particular | |
2528 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
2529 | ||
c5aa993b | 2530 | static int |
fba45db2 | 2531 | overlay_is_mapped (struct obj_section *osect) |
c906108c SS |
2532 | { |
2533 | if (osect == 0 || !section_is_overlay (osect->the_bfd_section)) | |
2534 | return 0; | |
2535 | ||
c5aa993b | 2536 | switch (overlay_debugging) |
c906108c SS |
2537 | { |
2538 | default: | |
c5aa993b JM |
2539 | case 0: |
2540 | return 0; /* overlay debugging off */ | |
c906108c SS |
2541 | case -1: /* overlay debugging automatic */ |
2542 | /* Unles there is a target_overlay_update function, | |
c5aa993b | 2543 | there's really nothing useful to do here (can't really go auto) */ |
c906108c SS |
2544 | if (target_overlay_update) |
2545 | { | |
2546 | if (overlay_cache_invalid) | |
2547 | { | |
2548 | overlay_invalidate_all (); | |
2549 | overlay_cache_invalid = 0; | |
2550 | } | |
2551 | if (osect->ovly_mapped == -1) | |
2552 | (*target_overlay_update) (osect); | |
2553 | } | |
2554 | /* fall thru to manual case */ | |
2555 | case 1: /* overlay debugging manual */ | |
2556 | return osect->ovly_mapped == 1; | |
2557 | } | |
2558 | } | |
2559 | ||
2560 | /* Function: section_is_mapped | |
2561 | Returns true if section is an overlay, and is currently mapped. */ | |
2562 | ||
2563 | int | |
fba45db2 | 2564 | section_is_mapped (asection *section) |
c906108c | 2565 | { |
c5aa993b | 2566 | struct objfile *objfile; |
c906108c SS |
2567 | struct obj_section *osect; |
2568 | ||
2569 | if (overlay_debugging) | |
2570 | if (section && section_is_overlay (section)) | |
2571 | ALL_OBJSECTIONS (objfile, osect) | |
2572 | if (osect->the_bfd_section == section) | |
c5aa993b | 2573 | return overlay_is_mapped (osect); |
c906108c SS |
2574 | |
2575 | return 0; | |
2576 | } | |
2577 | ||
2578 | /* Function: pc_in_unmapped_range | |
2579 | If PC falls into the lma range of SECTION, return true, else false. */ | |
2580 | ||
2581 | CORE_ADDR | |
fba45db2 | 2582 | pc_in_unmapped_range (CORE_ADDR pc, asection *section) |
c906108c SS |
2583 | { |
2584 | int size; | |
2585 | ||
2586 | if (overlay_debugging) | |
2587 | if (section && section_is_overlay (section)) | |
2588 | { | |
2589 | size = bfd_get_section_size_before_reloc (section); | |
2590 | if (section->lma <= pc && pc < section->lma + size) | |
2591 | return 1; | |
2592 | } | |
2593 | return 0; | |
2594 | } | |
2595 | ||
2596 | /* Function: pc_in_mapped_range | |
2597 | If PC falls into the vma range of SECTION, return true, else false. */ | |
2598 | ||
2599 | CORE_ADDR | |
fba45db2 | 2600 | pc_in_mapped_range (CORE_ADDR pc, asection *section) |
c906108c SS |
2601 | { |
2602 | int size; | |
2603 | ||
2604 | if (overlay_debugging) | |
2605 | if (section && section_is_overlay (section)) | |
2606 | { | |
2607 | size = bfd_get_section_size_before_reloc (section); | |
2608 | if (section->vma <= pc && pc < section->vma + size) | |
2609 | return 1; | |
2610 | } | |
2611 | return 0; | |
2612 | } | |
2613 | ||
2614 | /* Function: overlay_unmapped_address (PC, SECTION) | |
2615 | Returns the address corresponding to PC in the unmapped (load) range. | |
2616 | May be the same as PC. */ | |
2617 | ||
2618 | CORE_ADDR | |
fba45db2 | 2619 | overlay_unmapped_address (CORE_ADDR pc, asection *section) |
c906108c SS |
2620 | { |
2621 | if (overlay_debugging) | |
2622 | if (section && section_is_overlay (section) && | |
2623 | pc_in_mapped_range (pc, section)) | |
2624 | return pc + section->lma - section->vma; | |
2625 | ||
2626 | return pc; | |
2627 | } | |
2628 | ||
2629 | /* Function: overlay_mapped_address (PC, SECTION) | |
2630 | Returns the address corresponding to PC in the mapped (runtime) range. | |
2631 | May be the same as PC. */ | |
2632 | ||
2633 | CORE_ADDR | |
fba45db2 | 2634 | overlay_mapped_address (CORE_ADDR pc, asection *section) |
c906108c SS |
2635 | { |
2636 | if (overlay_debugging) | |
2637 | if (section && section_is_overlay (section) && | |
2638 | pc_in_unmapped_range (pc, section)) | |
2639 | return pc + section->vma - section->lma; | |
2640 | ||
2641 | return pc; | |
2642 | } | |
2643 | ||
2644 | ||
2645 | /* Function: symbol_overlayed_address | |
2646 | Return one of two addresses (relative to the VMA or to the LMA), | |
2647 | depending on whether the section is mapped or not. */ | |
2648 | ||
c5aa993b | 2649 | CORE_ADDR |
fba45db2 | 2650 | symbol_overlayed_address (CORE_ADDR address, asection *section) |
c906108c SS |
2651 | { |
2652 | if (overlay_debugging) | |
2653 | { | |
2654 | /* If the symbol has no section, just return its regular address. */ | |
2655 | if (section == 0) | |
2656 | return address; | |
2657 | /* If the symbol's section is not an overlay, just return its address */ | |
2658 | if (!section_is_overlay (section)) | |
2659 | return address; | |
2660 | /* If the symbol's section is mapped, just return its address */ | |
2661 | if (section_is_mapped (section)) | |
2662 | return address; | |
2663 | /* | |
2664 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
2665 | * then return its LOADED address rather than its vma address!! | |
2666 | */ | |
2667 | return overlay_unmapped_address (address, section); | |
2668 | } | |
2669 | return address; | |
2670 | } | |
2671 | ||
2672 | /* Function: find_pc_overlay (PC) | |
2673 | Return the best-match overlay section for PC: | |
2674 | If PC matches a mapped overlay section's VMA, return that section. | |
2675 | Else if PC matches an unmapped section's VMA, return that section. | |
2676 | Else if PC matches an unmapped section's LMA, return that section. */ | |
2677 | ||
2678 | asection * | |
fba45db2 | 2679 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 2680 | { |
c5aa993b | 2681 | struct objfile *objfile; |
c906108c SS |
2682 | struct obj_section *osect, *best_match = NULL; |
2683 | ||
2684 | if (overlay_debugging) | |
2685 | ALL_OBJSECTIONS (objfile, osect) | |
2686 | if (section_is_overlay (osect->the_bfd_section)) | |
c5aa993b JM |
2687 | { |
2688 | if (pc_in_mapped_range (pc, osect->the_bfd_section)) | |
2689 | { | |
2690 | if (overlay_is_mapped (osect)) | |
2691 | return osect->the_bfd_section; | |
2692 | else | |
2693 | best_match = osect; | |
2694 | } | |
2695 | else if (pc_in_unmapped_range (pc, osect->the_bfd_section)) | |
2696 | best_match = osect; | |
2697 | } | |
c906108c SS |
2698 | return best_match ? best_match->the_bfd_section : NULL; |
2699 | } | |
2700 | ||
2701 | /* Function: find_pc_mapped_section (PC) | |
2702 | If PC falls into the VMA address range of an overlay section that is | |
2703 | currently marked as MAPPED, return that section. Else return NULL. */ | |
2704 | ||
2705 | asection * | |
fba45db2 | 2706 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 2707 | { |
c5aa993b | 2708 | struct objfile *objfile; |
c906108c SS |
2709 | struct obj_section *osect; |
2710 | ||
2711 | if (overlay_debugging) | |
2712 | ALL_OBJSECTIONS (objfile, osect) | |
2713 | if (pc_in_mapped_range (pc, osect->the_bfd_section) && | |
2714 | overlay_is_mapped (osect)) | |
c5aa993b | 2715 | return osect->the_bfd_section; |
c906108c SS |
2716 | |
2717 | return NULL; | |
2718 | } | |
2719 | ||
2720 | /* Function: list_overlays_command | |
2721 | Print a list of mapped sections and their PC ranges */ | |
2722 | ||
2723 | void | |
fba45db2 | 2724 | list_overlays_command (char *args, int from_tty) |
c906108c | 2725 | { |
c5aa993b JM |
2726 | int nmapped = 0; |
2727 | struct objfile *objfile; | |
c906108c SS |
2728 | struct obj_section *osect; |
2729 | ||
2730 | if (overlay_debugging) | |
2731 | ALL_OBJSECTIONS (objfile, osect) | |
2732 | if (overlay_is_mapped (osect)) | |
c5aa993b JM |
2733 | { |
2734 | const char *name; | |
2735 | bfd_vma lma, vma; | |
2736 | int size; | |
2737 | ||
2738 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
2739 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
2740 | size = bfd_get_section_size_before_reloc (osect->the_bfd_section); | |
2741 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); | |
2742 | ||
2743 | printf_filtered ("Section %s, loaded at ", name); | |
2744 | print_address_numeric (lma, 1, gdb_stdout); | |
2745 | puts_filtered (" - "); | |
2746 | print_address_numeric (lma + size, 1, gdb_stdout); | |
2747 | printf_filtered (", mapped at "); | |
2748 | print_address_numeric (vma, 1, gdb_stdout); | |
2749 | puts_filtered (" - "); | |
2750 | print_address_numeric (vma + size, 1, gdb_stdout); | |
2751 | puts_filtered ("\n"); | |
2752 | ||
2753 | nmapped++; | |
2754 | } | |
c906108c SS |
2755 | if (nmapped == 0) |
2756 | printf_filtered ("No sections are mapped.\n"); | |
2757 | } | |
2758 | ||
2759 | /* Function: map_overlay_command | |
2760 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
2761 | ||
2762 | void | |
fba45db2 | 2763 | map_overlay_command (char *args, int from_tty) |
c906108c | 2764 | { |
c5aa993b JM |
2765 | struct objfile *objfile, *objfile2; |
2766 | struct obj_section *sec, *sec2; | |
2767 | asection *bfdsec; | |
c906108c SS |
2768 | |
2769 | if (!overlay_debugging) | |
515ad16c EZ |
2770 | error ("\ |
2771 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ | |
2772 | the 'overlay manual' command."); | |
c906108c SS |
2773 | |
2774 | if (args == 0 || *args == 0) | |
2775 | error ("Argument required: name of an overlay section"); | |
2776 | ||
2777 | /* First, find a section matching the user supplied argument */ | |
2778 | ALL_OBJSECTIONS (objfile, sec) | |
2779 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
2780 | { |
2781 | /* Now, check to see if the section is an overlay. */ | |
2782 | bfdsec = sec->the_bfd_section; | |
2783 | if (!section_is_overlay (bfdsec)) | |
2784 | continue; /* not an overlay section */ | |
2785 | ||
2786 | /* Mark the overlay as "mapped" */ | |
2787 | sec->ovly_mapped = 1; | |
2788 | ||
2789 | /* Next, make a pass and unmap any sections that are | |
2790 | overlapped by this new section: */ | |
2791 | ALL_OBJSECTIONS (objfile2, sec2) | |
2792 | if (sec2->ovly_mapped && | |
2793 | sec != sec2 && | |
2794 | sec->the_bfd_section != sec2->the_bfd_section && | |
2795 | (pc_in_mapped_range (sec2->addr, sec->the_bfd_section) || | |
2796 | pc_in_mapped_range (sec2->endaddr, sec->the_bfd_section))) | |
2797 | { | |
2798 | if (info_verbose) | |
2799 | printf_filtered ("Note: section %s unmapped by overlap\n", | |
2800 | bfd_section_name (objfile->obfd, | |
2801 | sec2->the_bfd_section)); | |
2802 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2 */ | |
2803 | } | |
2804 | return; | |
2805 | } | |
c906108c SS |
2806 | error ("No overlay section called %s", args); |
2807 | } | |
2808 | ||
2809 | /* Function: unmap_overlay_command | |
2810 | Mark the overlay section as unmapped | |
2811 | (ie. resident in its LMA address range, rather than the VMA range). */ | |
2812 | ||
2813 | void | |
fba45db2 | 2814 | unmap_overlay_command (char *args, int from_tty) |
c906108c | 2815 | { |
c5aa993b | 2816 | struct objfile *objfile; |
c906108c SS |
2817 | struct obj_section *sec; |
2818 | ||
2819 | if (!overlay_debugging) | |
515ad16c EZ |
2820 | error ("\ |
2821 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ | |
2822 | the 'overlay manual' command."); | |
c906108c SS |
2823 | |
2824 | if (args == 0 || *args == 0) | |
2825 | error ("Argument required: name of an overlay section"); | |
2826 | ||
2827 | /* First, find a section matching the user supplied argument */ | |
2828 | ALL_OBJSECTIONS (objfile, sec) | |
2829 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
2830 | { |
2831 | if (!sec->ovly_mapped) | |
2832 | error ("Section %s is not mapped", args); | |
2833 | sec->ovly_mapped = 0; | |
2834 | return; | |
2835 | } | |
c906108c SS |
2836 | error ("No overlay section called %s", args); |
2837 | } | |
2838 | ||
2839 | /* Function: overlay_auto_command | |
2840 | A utility command to turn on overlay debugging. | |
2841 | Possibly this should be done via a set/show command. */ | |
2842 | ||
2843 | static void | |
fba45db2 | 2844 | overlay_auto_command (char *args, int from_tty) |
c906108c SS |
2845 | { |
2846 | overlay_debugging = -1; | |
2847 | if (info_verbose) | |
2848 | printf_filtered ("Automatic overlay debugging enabled."); | |
2849 | } | |
2850 | ||
2851 | /* Function: overlay_manual_command | |
2852 | A utility command to turn on overlay debugging. | |
2853 | Possibly this should be done via a set/show command. */ | |
2854 | ||
2855 | static void | |
fba45db2 | 2856 | overlay_manual_command (char *args, int from_tty) |
c906108c SS |
2857 | { |
2858 | overlay_debugging = 1; | |
2859 | if (info_verbose) | |
2860 | printf_filtered ("Overlay debugging enabled."); | |
2861 | } | |
2862 | ||
2863 | /* Function: overlay_off_command | |
2864 | A utility command to turn on overlay debugging. | |
2865 | Possibly this should be done via a set/show command. */ | |
2866 | ||
2867 | static void | |
fba45db2 | 2868 | overlay_off_command (char *args, int from_tty) |
c906108c | 2869 | { |
c5aa993b | 2870 | overlay_debugging = 0; |
c906108c SS |
2871 | if (info_verbose) |
2872 | printf_filtered ("Overlay debugging disabled."); | |
2873 | } | |
2874 | ||
2875 | static void | |
fba45db2 | 2876 | overlay_load_command (char *args, int from_tty) |
c906108c SS |
2877 | { |
2878 | if (target_overlay_update) | |
2879 | (*target_overlay_update) (NULL); | |
2880 | else | |
2881 | error ("This target does not know how to read its overlay state."); | |
2882 | } | |
2883 | ||
2884 | /* Function: overlay_command | |
2885 | A place-holder for a mis-typed command */ | |
2886 | ||
2887 | /* Command list chain containing all defined "overlay" subcommands. */ | |
2888 | struct cmd_list_element *overlaylist; | |
2889 | ||
2890 | static void | |
fba45db2 | 2891 | overlay_command (char *args, int from_tty) |
c906108c | 2892 | { |
c5aa993b | 2893 | printf_unfiltered |
c906108c SS |
2894 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
2895 | help_list (overlaylist, "overlay ", -1, gdb_stdout); | |
2896 | } | |
2897 | ||
2898 | ||
2899 | /* Target Overlays for the "Simplest" overlay manager: | |
2900 | ||
2901 | This is GDB's default target overlay layer. It works with the | |
2902 | minimal overlay manager supplied as an example by Cygnus. The | |
2903 | entry point is via a function pointer "target_overlay_update", | |
2904 | so targets that use a different runtime overlay manager can | |
2905 | substitute their own overlay_update function and take over the | |
2906 | function pointer. | |
2907 | ||
2908 | The overlay_update function pokes around in the target's data structures | |
2909 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
2910 | this information. | |
2911 | ||
2912 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
2913 | unsigned _novlys; /# number of overlay sections #/ |
2914 | unsigned _ovly_table[_novlys][4] = { | |
2915 | {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/ | |
2916 | {..., ..., ..., ...}, | |
2917 | } | |
2918 | unsigned _novly_regions; /# number of overlay regions #/ | |
2919 | unsigned _ovly_region_table[_novly_regions][3] = { | |
2920 | {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ | |
2921 | {..., ..., ...}, | |
2922 | } | |
c906108c SS |
2923 | These functions will attempt to update GDB's mappedness state in the |
2924 | symbol section table, based on the target's mappedness state. | |
2925 | ||
2926 | To do this, we keep a cached copy of the target's _ovly_table, and | |
2927 | attempt to detect when the cached copy is invalidated. The main | |
2928 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
2929 | the cached table and re-reads only the entry for that section from | |
2930 | the target (whenever possible). | |
2931 | */ | |
2932 | ||
2933 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 2934 | static unsigned (*cache_ovly_table)[4] = 0; |
c906108c | 2935 | #if 0 |
c5aa993b | 2936 | static unsigned (*cache_ovly_region_table)[3] = 0; |
c906108c | 2937 | #endif |
c5aa993b | 2938 | static unsigned cache_novlys = 0; |
c906108c | 2939 | #if 0 |
c5aa993b | 2940 | static unsigned cache_novly_regions = 0; |
c906108c SS |
2941 | #endif |
2942 | static CORE_ADDR cache_ovly_table_base = 0; | |
2943 | #if 0 | |
2944 | static CORE_ADDR cache_ovly_region_table_base = 0; | |
2945 | #endif | |
c5aa993b JM |
2946 | enum ovly_index |
2947 | { | |
2948 | VMA, SIZE, LMA, MAPPED | |
2949 | }; | |
c906108c SS |
2950 | #define TARGET_LONG_BYTES (TARGET_LONG_BIT / TARGET_CHAR_BIT) |
2951 | ||
2952 | /* Throw away the cached copy of _ovly_table */ | |
2953 | static void | |
fba45db2 | 2954 | simple_free_overlay_table (void) |
c906108c SS |
2955 | { |
2956 | if (cache_ovly_table) | |
c5aa993b JM |
2957 | free (cache_ovly_table); |
2958 | cache_novlys = 0; | |
c906108c SS |
2959 | cache_ovly_table = NULL; |
2960 | cache_ovly_table_base = 0; | |
2961 | } | |
2962 | ||
2963 | #if 0 | |
2964 | /* Throw away the cached copy of _ovly_region_table */ | |
2965 | static void | |
fba45db2 | 2966 | simple_free_overlay_region_table (void) |
c906108c SS |
2967 | { |
2968 | if (cache_ovly_region_table) | |
c5aa993b JM |
2969 | free (cache_ovly_region_table); |
2970 | cache_novly_regions = 0; | |
c906108c SS |
2971 | cache_ovly_region_table = NULL; |
2972 | cache_ovly_region_table_base = 0; | |
2973 | } | |
2974 | #endif | |
2975 | ||
2976 | /* Read an array of ints from the target into a local buffer. | |
2977 | Convert to host order. int LEN is number of ints */ | |
2978 | static void | |
fba45db2 | 2979 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, int len) |
c906108c SS |
2980 | { |
2981 | char *buf = alloca (len * TARGET_LONG_BYTES); | |
c5aa993b | 2982 | int i; |
c906108c SS |
2983 | |
2984 | read_memory (memaddr, buf, len * TARGET_LONG_BYTES); | |
2985 | for (i = 0; i < len; i++) | |
c5aa993b | 2986 | myaddr[i] = extract_unsigned_integer (TARGET_LONG_BYTES * i + buf, |
c906108c SS |
2987 | TARGET_LONG_BYTES); |
2988 | } | |
2989 | ||
2990 | /* Find and grab a copy of the target _ovly_table | |
2991 | (and _novlys, which is needed for the table's size) */ | |
c5aa993b | 2992 | static int |
fba45db2 | 2993 | simple_read_overlay_table (void) |
c906108c SS |
2994 | { |
2995 | struct minimal_symbol *msym; | |
2996 | ||
2997 | simple_free_overlay_table (); | |
2998 | msym = lookup_minimal_symbol ("_novlys", 0, 0); | |
2999 | if (msym != NULL) | |
3000 | cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (msym), 4); | |
c5aa993b JM |
3001 | else |
3002 | return 0; /* failure */ | |
3003 | cache_ovly_table = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); | |
c906108c SS |
3004 | if (cache_ovly_table != NULL) |
3005 | { | |
3006 | msym = lookup_minimal_symbol ("_ovly_table", 0, 0); | |
3007 | if (msym != NULL) | |
3008 | { | |
3009 | cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (msym); | |
c5aa993b JM |
3010 | read_target_long_array (cache_ovly_table_base, |
3011 | (int *) cache_ovly_table, | |
c906108c SS |
3012 | cache_novlys * 4); |
3013 | } | |
c5aa993b JM |
3014 | else |
3015 | return 0; /* failure */ | |
c906108c | 3016 | } |
c5aa993b JM |
3017 | else |
3018 | return 0; /* failure */ | |
3019 | return 1; /* SUCCESS */ | |
c906108c SS |
3020 | } |
3021 | ||
3022 | #if 0 | |
3023 | /* Find and grab a copy of the target _ovly_region_table | |
3024 | (and _novly_regions, which is needed for the table's size) */ | |
c5aa993b | 3025 | static int |
fba45db2 | 3026 | simple_read_overlay_region_table (void) |
c906108c SS |
3027 | { |
3028 | struct minimal_symbol *msym; | |
3029 | ||
3030 | simple_free_overlay_region_table (); | |
3031 | msym = lookup_minimal_symbol ("_novly_regions", 0, 0); | |
3032 | if (msym != NULL) | |
3033 | cache_novly_regions = read_memory_integer (SYMBOL_VALUE_ADDRESS (msym), 4); | |
c5aa993b JM |
3034 | else |
3035 | return 0; /* failure */ | |
c906108c SS |
3036 | cache_ovly_region_table = (void *) xmalloc (cache_novly_regions * 12); |
3037 | if (cache_ovly_region_table != NULL) | |
3038 | { | |
3039 | msym = lookup_minimal_symbol ("_ovly_region_table", 0, 0); | |
3040 | if (msym != NULL) | |
3041 | { | |
3042 | cache_ovly_region_table_base = SYMBOL_VALUE_ADDRESS (msym); | |
c5aa993b JM |
3043 | read_target_long_array (cache_ovly_region_table_base, |
3044 | (int *) cache_ovly_region_table, | |
c906108c SS |
3045 | cache_novly_regions * 3); |
3046 | } | |
c5aa993b JM |
3047 | else |
3048 | return 0; /* failure */ | |
c906108c | 3049 | } |
c5aa993b JM |
3050 | else |
3051 | return 0; /* failure */ | |
3052 | return 1; /* SUCCESS */ | |
c906108c SS |
3053 | } |
3054 | #endif | |
3055 | ||
3056 | /* Function: simple_overlay_update_1 | |
3057 | A helper function for simple_overlay_update. Assuming a cached copy | |
3058 | of _ovly_table exists, look through it to find an entry whose vma, | |
3059 | lma and size match those of OSECT. Re-read the entry and make sure | |
3060 | it still matches OSECT (else the table may no longer be valid). | |
3061 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3062 | success, 0 for failure. */ | |
3063 | ||
3064 | static int | |
fba45db2 | 3065 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c SS |
3066 | { |
3067 | int i, size; | |
3068 | ||
3069 | size = bfd_get_section_size_before_reloc (osect->the_bfd_section); | |
3070 | for (i = 0; i < cache_novlys; i++) | |
c5aa993b JM |
3071 | if (cache_ovly_table[i][VMA] == osect->the_bfd_section->vma && |
3072 | cache_ovly_table[i][LMA] == osect->the_bfd_section->lma /* && | |
3073 | cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3074 | { |
3075 | read_target_long_array (cache_ovly_table_base + i * TARGET_LONG_BYTES, | |
3076 | (int *) cache_ovly_table[i], 4); | |
c5aa993b JM |
3077 | if (cache_ovly_table[i][VMA] == osect->the_bfd_section->vma && |
3078 | cache_ovly_table[i][LMA] == osect->the_bfd_section->lma /* && | |
3079 | cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3080 | { |
3081 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3082 | return 1; | |
3083 | } | |
c5aa993b | 3084 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3085 | return 0; |
3086 | } | |
3087 | return 0; | |
3088 | } | |
3089 | ||
3090 | /* Function: simple_overlay_update | |
3091 | If OSECT is NULL, then update all sections' mapped state | |
3092 | (after re-reading the entire target _ovly_table). | |
3093 | If OSECT is non-NULL, then try to find a matching entry in the | |
3094 | cached ovly_table and update only OSECT's mapped state. | |
3095 | If a cached entry can't be found or the cache isn't valid, then | |
3096 | re-read the entire cache, and go ahead and update all sections. */ | |
3097 | ||
3098 | static void | |
fba45db2 | 3099 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3100 | { |
c5aa993b | 3101 | struct objfile *objfile; |
c906108c SS |
3102 | |
3103 | /* Were we given an osect to look up? NULL means do all of them. */ | |
3104 | if (osect) | |
3105 | /* Have we got a cached copy of the target's overlay table? */ | |
3106 | if (cache_ovly_table != NULL) | |
3107 | /* Does its cached location match what's currently in the symtab? */ | |
c5aa993b | 3108 | if (cache_ovly_table_base == |
c906108c SS |
3109 | SYMBOL_VALUE_ADDRESS (lookup_minimal_symbol ("_ovly_table", 0, 0))) |
3110 | /* Then go ahead and try to look up this single section in the cache */ | |
3111 | if (simple_overlay_update_1 (osect)) | |
3112 | /* Found it! We're done. */ | |
3113 | return; | |
3114 | ||
3115 | /* Cached table no good: need to read the entire table anew. | |
3116 | Or else we want all the sections, in which case it's actually | |
3117 | more efficient to read the whole table in one block anyway. */ | |
3118 | ||
3119 | if (simple_read_overlay_table () == 0) /* read failed? No table? */ | |
3120 | { | |
3121 | warning ("Failed to read the target overlay mapping table."); | |
3122 | return; | |
3123 | } | |
3124 | /* Now may as well update all sections, even if only one was requested. */ | |
3125 | ALL_OBJSECTIONS (objfile, osect) | |
3126 | if (section_is_overlay (osect->the_bfd_section)) | |
c5aa993b JM |
3127 | { |
3128 | int i, size; | |
3129 | ||
3130 | size = bfd_get_section_size_before_reloc (osect->the_bfd_section); | |
3131 | for (i = 0; i < cache_novlys; i++) | |
3132 | if (cache_ovly_table[i][VMA] == osect->the_bfd_section->vma && | |
3133 | cache_ovly_table[i][LMA] == osect->the_bfd_section->lma /* && | |
3134 | cache_ovly_table[i][SIZE] == size */ ) | |
3135 | { /* obj_section matches i'th entry in ovly_table */ | |
3136 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3137 | break; /* finished with inner for loop: break out */ | |
3138 | } | |
3139 | } | |
c906108c SS |
3140 | } |
3141 | ||
3142 | ||
3143 | void | |
fba45db2 | 3144 | _initialize_symfile (void) |
c906108c SS |
3145 | { |
3146 | struct cmd_list_element *c; | |
c5aa993b | 3147 | |
c906108c | 3148 | c = add_cmd ("symbol-file", class_files, symbol_file_command, |
c5aa993b | 3149 | "Load symbol table from executable file FILE.\n\ |
c906108c SS |
3150 | The `file' command can also load symbol tables, as well as setting the file\n\ |
3151 | to execute.", &cmdlist); | |
3152 | c->completer = filename_completer; | |
3153 | ||
3154 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, | |
db162d44 | 3155 | "Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR> ...]\n\ |
c906108c | 3156 | Load the symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
2acceee2 | 3157 | ADDR is the starting address of the file's text.\n\ |
db162d44 EZ |
3158 | The optional arguments are section-name section-address pairs and\n\ |
3159 | should be specified if the data and bss segments are not contiguous\n\ | |
3160 | with the text. SECT is a section name to be loaded at SECT_ADDR.", | |
c906108c SS |
3161 | &cmdlist); |
3162 | c->completer = filename_completer; | |
3163 | ||
3164 | c = add_cmd ("add-shared-symbol-files", class_files, | |
3165 | add_shared_symbol_files_command, | |
3166 | "Load the symbols from shared objects in the dynamic linker's link map.", | |
c5aa993b | 3167 | &cmdlist); |
c906108c SS |
3168 | c = add_alias_cmd ("assf", "add-shared-symbol-files", class_files, 1, |
3169 | &cmdlist); | |
3170 | ||
3171 | c = add_cmd ("load", class_files, load_command, | |
c5aa993b | 3172 | "Dynamically load FILE into the running program, and record its symbols\n\ |
c906108c SS |
3173 | for access from GDB.", &cmdlist); |
3174 | c->completer = filename_completer; | |
3175 | ||
3176 | add_show_from_set | |
3177 | (add_set_cmd ("symbol-reloading", class_support, var_boolean, | |
c5aa993b JM |
3178 | (char *) &symbol_reloading, |
3179 | "Set dynamic symbol table reloading multiple times in one run.", | |
c906108c SS |
3180 | &setlist), |
3181 | &showlist); | |
3182 | ||
c5aa993b JM |
3183 | add_prefix_cmd ("overlay", class_support, overlay_command, |
3184 | "Commands for debugging overlays.", &overlaylist, | |
c906108c SS |
3185 | "overlay ", 0, &cmdlist); |
3186 | ||
3187 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3188 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3189 | ||
c5aa993b | 3190 | add_cmd ("map-overlay", class_support, map_overlay_command, |
c906108c SS |
3191 | "Assert that an overlay section is mapped.", &overlaylist); |
3192 | ||
c5aa993b | 3193 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
c906108c SS |
3194 | "Assert that an overlay section is unmapped.", &overlaylist); |
3195 | ||
c5aa993b | 3196 | add_cmd ("list-overlays", class_support, list_overlays_command, |
c906108c SS |
3197 | "List mappings of overlay sections.", &overlaylist); |
3198 | ||
c5aa993b | 3199 | add_cmd ("manual", class_support, overlay_manual_command, |
c906108c | 3200 | "Enable overlay debugging.", &overlaylist); |
c5aa993b | 3201 | add_cmd ("off", class_support, overlay_off_command, |
c906108c | 3202 | "Disable overlay debugging.", &overlaylist); |
c5aa993b | 3203 | add_cmd ("auto", class_support, overlay_auto_command, |
c906108c | 3204 | "Enable automatic overlay debugging.", &overlaylist); |
c5aa993b | 3205 | add_cmd ("load-target", class_support, overlay_load_command, |
c906108c SS |
3206 | "Read the overlay mapping state from the target.", &overlaylist); |
3207 | ||
3208 | /* Filename extension to source language lookup table: */ | |
3209 | init_filename_language_table (); | |
3210 | c = add_set_cmd ("extension-language", class_files, var_string_noescape, | |
c5aa993b | 3211 | (char *) &ext_args, |
c906108c SS |
3212 | "Set mapping between filename extension and source language.\n\ |
3213 | Usage: set extension-language .foo bar", | |
c5aa993b | 3214 | &setlist); |
c906108c SS |
3215 | c->function.cfunc = set_ext_lang_command; |
3216 | ||
c5aa993b | 3217 | add_info ("extensions", info_ext_lang_command, |
c906108c | 3218 | "All filename extensions associated with a source language."); |
917317f4 JM |
3219 | |
3220 | add_show_from_set | |
3221 | (add_set_cmd ("download-write-size", class_obscure, | |
3222 | var_integer, (char *) &download_write_size, | |
3223 | "Set the write size used when downloading a program.\n" | |
3224 | "Only used when downloading a program onto a remote\n" | |
3225 | "target. Specify zero, or a negative value, to disable\n" | |
3226 | "blocked writes. The actual size of each transfer is also\n" | |
3227 | "limited by the size of the target packet and the memory\n" | |
3228 | "cache.\n", | |
3229 | &setlist), | |
3230 | &showlist); | |
c906108c | 3231 | } |