Commit | Line | Data |
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c906108c | 1 | /* Generic symbol file reading for the GNU debugger, GDB. |
8926118c AC |
2 | |
3 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, | |
1bac305b | 4 | 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc. |
8926118c | 5 | |
c906108c SS |
6 | Contributed by Cygnus Support, using pieces from other GDB modules. |
7 | ||
c5aa993b | 8 | This file is part of GDB. |
c906108c | 9 | |
c5aa993b JM |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2 of the License, or | |
13 | (at your option) any later version. | |
c906108c | 14 | |
c5aa993b JM |
15 | This program is distributed in the hope that it will be useful, |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
c906108c | 19 | |
c5aa993b JM |
20 | You should have received a copy of the GNU General Public License |
21 | along with this program; if not, write to the Free Software | |
22 | Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
24 | |
25 | #include "defs.h" | |
086df311 | 26 | #include "bfdlink.h" |
c906108c SS |
27 | #include "symtab.h" |
28 | #include "gdbtypes.h" | |
29 | #include "gdbcore.h" | |
30 | #include "frame.h" | |
31 | #include "target.h" | |
32 | #include "value.h" | |
33 | #include "symfile.h" | |
34 | #include "objfiles.h" | |
0378c332 | 35 | #include "source.h" |
c906108c SS |
36 | #include "gdbcmd.h" |
37 | #include "breakpoint.h" | |
38 | #include "language.h" | |
39 | #include "complaints.h" | |
40 | #include "demangle.h" | |
c5aa993b | 41 | #include "inferior.h" /* for write_pc */ |
5b5d99cf | 42 | #include "filenames.h" /* for DOSish file names */ |
c906108c | 43 | #include "gdb-stabs.h" |
04ea0df1 | 44 | #include "gdb_obstack.h" |
d75b5104 | 45 | #include "completer.h" |
af5f3db6 | 46 | #include "bcache.h" |
2de7ced7 | 47 | #include "hashtab.h" |
38017ce8 | 48 | #include <readline/readline.h> |
7e8580c1 | 49 | #include "gdb_assert.h" |
fe898f56 | 50 | #include "block.h" |
c906108c | 51 | |
c906108c SS |
52 | #include <sys/types.h> |
53 | #include <fcntl.h> | |
54 | #include "gdb_string.h" | |
55 | #include "gdb_stat.h" | |
56 | #include <ctype.h> | |
57 | #include <time.h> | |
c906108c SS |
58 | |
59 | #ifndef O_BINARY | |
60 | #define O_BINARY 0 | |
61 | #endif | |
62 | ||
63 | #ifdef HPUXHPPA | |
64 | ||
65 | /* Some HP-UX related globals to clear when a new "main" | |
66 | symbol file is loaded. HP-specific. */ | |
67 | ||
68 | extern int hp_som_som_object_present; | |
69 | extern int hp_cxx_exception_support_initialized; | |
70 | #define RESET_HP_UX_GLOBALS() do {\ | |
71 | hp_som_som_object_present = 0; /* indicates HP-compiled code */ \ | |
72 | hp_cxx_exception_support_initialized = 0; /* must reinitialize exception stuff */ \ | |
73 | } while (0) | |
74 | #endif | |
75 | ||
917317f4 | 76 | int (*ui_load_progress_hook) (const char *section, unsigned long num); |
c2d11a7d JM |
77 | void (*show_load_progress) (const char *section, |
78 | unsigned long section_sent, | |
79 | unsigned long section_size, | |
80 | unsigned long total_sent, | |
81 | unsigned long total_size); | |
507f3c78 KB |
82 | void (*pre_add_symbol_hook) (char *); |
83 | void (*post_add_symbol_hook) (void); | |
84 | void (*target_new_objfile_hook) (struct objfile *); | |
c906108c | 85 | |
74b7792f AC |
86 | static void clear_symtab_users_cleanup (void *ignore); |
87 | ||
c906108c | 88 | /* Global variables owned by this file */ |
c5aa993b | 89 | int readnow_symbol_files; /* Read full symbols immediately */ |
c906108c | 90 | |
c906108c SS |
91 | /* External variables and functions referenced. */ |
92 | ||
a14ed312 | 93 | extern void report_transfer_performance (unsigned long, time_t, time_t); |
c906108c SS |
94 | |
95 | /* Functions this file defines */ | |
96 | ||
97 | #if 0 | |
a14ed312 KB |
98 | static int simple_read_overlay_region_table (void); |
99 | static void simple_free_overlay_region_table (void); | |
c906108c SS |
100 | #endif |
101 | ||
a14ed312 | 102 | static void set_initial_language (void); |
c906108c | 103 | |
a14ed312 | 104 | static void load_command (char *, int); |
c906108c | 105 | |
d7db6da9 FN |
106 | static void symbol_file_add_main_1 (char *args, int from_tty, int flags); |
107 | ||
a14ed312 | 108 | static void add_symbol_file_command (char *, int); |
c906108c | 109 | |
a14ed312 | 110 | static void add_shared_symbol_files_command (char *, int); |
c906108c | 111 | |
5b5d99cf JB |
112 | static void reread_separate_symbols (struct objfile *objfile); |
113 | ||
a14ed312 | 114 | static void cashier_psymtab (struct partial_symtab *); |
c906108c | 115 | |
a14ed312 | 116 | bfd *symfile_bfd_open (char *); |
c906108c | 117 | |
0e931cf0 JB |
118 | int get_section_index (struct objfile *, char *); |
119 | ||
a14ed312 | 120 | static void find_sym_fns (struct objfile *); |
c906108c | 121 | |
a14ed312 | 122 | static void decrement_reading_symtab (void *); |
c906108c | 123 | |
a14ed312 | 124 | static void overlay_invalidate_all (void); |
c906108c | 125 | |
a14ed312 | 126 | static int overlay_is_mapped (struct obj_section *); |
c906108c | 127 | |
a14ed312 | 128 | void list_overlays_command (char *, int); |
c906108c | 129 | |
a14ed312 | 130 | void map_overlay_command (char *, int); |
c906108c | 131 | |
a14ed312 | 132 | void unmap_overlay_command (char *, int); |
c906108c | 133 | |
a14ed312 | 134 | static void overlay_auto_command (char *, int); |
c906108c | 135 | |
a14ed312 | 136 | static void overlay_manual_command (char *, int); |
c906108c | 137 | |
a14ed312 | 138 | static void overlay_off_command (char *, int); |
c906108c | 139 | |
a14ed312 | 140 | static void overlay_load_command (char *, int); |
c906108c | 141 | |
a14ed312 | 142 | static void overlay_command (char *, int); |
c906108c | 143 | |
a14ed312 | 144 | static void simple_free_overlay_table (void); |
c906108c | 145 | |
a14ed312 | 146 | static void read_target_long_array (CORE_ADDR, unsigned int *, int); |
c906108c | 147 | |
a14ed312 | 148 | static int simple_read_overlay_table (void); |
c906108c | 149 | |
a14ed312 | 150 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 151 | |
a14ed312 | 152 | static void add_filename_language (char *ext, enum language lang); |
392a587b | 153 | |
a14ed312 | 154 | static void set_ext_lang_command (char *args, int from_tty); |
392a587b | 155 | |
a14ed312 | 156 | static void info_ext_lang_command (char *args, int from_tty); |
392a587b | 157 | |
5b5d99cf JB |
158 | static char *find_separate_debug_file (struct objfile *objfile); |
159 | ||
a14ed312 | 160 | static void init_filename_language_table (void); |
392a587b | 161 | |
a14ed312 | 162 | void _initialize_symfile (void); |
c906108c SS |
163 | |
164 | /* List of all available sym_fns. On gdb startup, each object file reader | |
165 | calls add_symtab_fns() to register information on each format it is | |
166 | prepared to read. */ | |
167 | ||
168 | static struct sym_fns *symtab_fns = NULL; | |
169 | ||
170 | /* Flag for whether user will be reloading symbols multiple times. | |
171 | Defaults to ON for VxWorks, otherwise OFF. */ | |
172 | ||
173 | #ifdef SYMBOL_RELOADING_DEFAULT | |
174 | int symbol_reloading = SYMBOL_RELOADING_DEFAULT; | |
175 | #else | |
176 | int symbol_reloading = 0; | |
177 | #endif | |
178 | ||
b7209cb4 FF |
179 | /* If non-zero, shared library symbols will be added automatically |
180 | when the inferior is created, new libraries are loaded, or when | |
181 | attaching to the inferior. This is almost always what users will | |
182 | want to have happen; but for very large programs, the startup time | |
183 | will be excessive, and so if this is a problem, the user can clear | |
184 | this flag and then add the shared library symbols as needed. Note | |
185 | that there is a potential for confusion, since if the shared | |
c906108c | 186 | library symbols are not loaded, commands like "info fun" will *not* |
b7209cb4 | 187 | report all the functions that are actually present. */ |
c906108c SS |
188 | |
189 | int auto_solib_add = 1; | |
b7209cb4 FF |
190 | |
191 | /* For systems that support it, a threshold size in megabytes. If | |
192 | automatically adding a new library's symbol table to those already | |
193 | known to the debugger would cause the total shared library symbol | |
194 | size to exceed this threshhold, then the shlib's symbols are not | |
195 | added. The threshold is ignored if the user explicitly asks for a | |
196 | shlib to be added, such as when using the "sharedlibrary" | |
197 | command. */ | |
198 | ||
199 | int auto_solib_limit; | |
c906108c | 200 | \f |
c5aa993b | 201 | |
c906108c SS |
202 | /* Since this function is called from within qsort, in an ANSI environment |
203 | it must conform to the prototype for qsort, which specifies that the | |
204 | comparison function takes two "void *" pointers. */ | |
205 | ||
206 | static int | |
0cd64fe2 | 207 | compare_symbols (const void *s1p, const void *s2p) |
c906108c SS |
208 | { |
209 | register struct symbol **s1, **s2; | |
210 | ||
211 | s1 = (struct symbol **) s1p; | |
212 | s2 = (struct symbol **) s2p; | |
c8be8951 | 213 | return (strcmp (SYMBOL_NATURAL_NAME (*s1), SYMBOL_NATURAL_NAME (*s2))); |
c906108c SS |
214 | } |
215 | ||
0fe19209 DC |
216 | /* This compares two partial symbols by names, using strcmp_iw_ordered |
217 | for the comparison. */ | |
c906108c SS |
218 | |
219 | static int | |
0cd64fe2 | 220 | compare_psymbols (const void *s1p, const void *s2p) |
c906108c | 221 | { |
0fe19209 DC |
222 | struct partial_symbol *const *s1 = s1p; |
223 | struct partial_symbol *const *s2 = s2p; | |
224 | ||
c8be8951 DC |
225 | return strcmp_iw_ordered (SYMBOL_NATURAL_NAME (*s1), |
226 | SYMBOL_NATURAL_NAME (*s2)); | |
c906108c SS |
227 | } |
228 | ||
229 | void | |
fba45db2 | 230 | sort_pst_symbols (struct partial_symtab *pst) |
c906108c SS |
231 | { |
232 | /* Sort the global list; don't sort the static list */ | |
233 | ||
c5aa993b JM |
234 | qsort (pst->objfile->global_psymbols.list + pst->globals_offset, |
235 | pst->n_global_syms, sizeof (struct partial_symbol *), | |
c906108c SS |
236 | compare_psymbols); |
237 | } | |
238 | ||
c906108c SS |
239 | /* Make a null terminated copy of the string at PTR with SIZE characters in |
240 | the obstack pointed to by OBSTACKP . Returns the address of the copy. | |
241 | Note that the string at PTR does not have to be null terminated, I.E. it | |
242 | may be part of a larger string and we are only saving a substring. */ | |
243 | ||
244 | char * | |
63ca651f | 245 | obsavestring (const char *ptr, int size, struct obstack *obstackp) |
c906108c SS |
246 | { |
247 | register char *p = (char *) obstack_alloc (obstackp, size + 1); | |
248 | /* Open-coded memcpy--saves function call time. These strings are usually | |
249 | short. FIXME: Is this really still true with a compiler that can | |
250 | inline memcpy? */ | |
251 | { | |
63ca651f | 252 | register const char *p1 = ptr; |
c906108c | 253 | register char *p2 = p; |
63ca651f | 254 | const char *end = ptr + size; |
c906108c SS |
255 | while (p1 != end) |
256 | *p2++ = *p1++; | |
257 | } | |
258 | p[size] = 0; | |
259 | return p; | |
260 | } | |
261 | ||
262 | /* Concatenate strings S1, S2 and S3; return the new string. Space is found | |
263 | in the obstack pointed to by OBSTACKP. */ | |
264 | ||
265 | char * | |
fba45db2 KB |
266 | obconcat (struct obstack *obstackp, const char *s1, const char *s2, |
267 | const char *s3) | |
c906108c SS |
268 | { |
269 | register int len = strlen (s1) + strlen (s2) + strlen (s3) + 1; | |
270 | register char *val = (char *) obstack_alloc (obstackp, len); | |
271 | strcpy (val, s1); | |
272 | strcat (val, s2); | |
273 | strcat (val, s3); | |
274 | return val; | |
275 | } | |
276 | ||
277 | /* True if we are nested inside psymtab_to_symtab. */ | |
278 | ||
279 | int currently_reading_symtab = 0; | |
280 | ||
281 | static void | |
fba45db2 | 282 | decrement_reading_symtab (void *dummy) |
c906108c SS |
283 | { |
284 | currently_reading_symtab--; | |
285 | } | |
286 | ||
287 | /* Get the symbol table that corresponds to a partial_symtab. | |
288 | This is fast after the first time you do it. In fact, there | |
289 | is an even faster macro PSYMTAB_TO_SYMTAB that does the fast | |
290 | case inline. */ | |
291 | ||
292 | struct symtab * | |
fba45db2 | 293 | psymtab_to_symtab (register struct partial_symtab *pst) |
c906108c SS |
294 | { |
295 | /* If it's been looked up before, return it. */ | |
296 | if (pst->symtab) | |
297 | return pst->symtab; | |
298 | ||
299 | /* If it has not yet been read in, read it. */ | |
300 | if (!pst->readin) | |
c5aa993b | 301 | { |
c906108c SS |
302 | struct cleanup *back_to = make_cleanup (decrement_reading_symtab, NULL); |
303 | currently_reading_symtab++; | |
304 | (*pst->read_symtab) (pst); | |
305 | do_cleanups (back_to); | |
306 | } | |
307 | ||
308 | return pst->symtab; | |
309 | } | |
310 | ||
311 | /* Initialize entry point information for this objfile. */ | |
312 | ||
313 | void | |
fba45db2 | 314 | init_entry_point_info (struct objfile *objfile) |
c906108c SS |
315 | { |
316 | /* Save startup file's range of PC addresses to help blockframe.c | |
317 | decide where the bottom of the stack is. */ | |
318 | ||
c5aa993b | 319 | if (bfd_get_file_flags (objfile->obfd) & EXEC_P) |
c906108c SS |
320 | { |
321 | /* Executable file -- record its entry point so we'll recognize | |
c5aa993b JM |
322 | the startup file because it contains the entry point. */ |
323 | objfile->ei.entry_point = bfd_get_start_address (objfile->obfd); | |
c906108c SS |
324 | } |
325 | else | |
326 | { | |
327 | /* Examination of non-executable.o files. Short-circuit this stuff. */ | |
c5aa993b | 328 | objfile->ei.entry_point = INVALID_ENTRY_POINT; |
c906108c | 329 | } |
c5aa993b JM |
330 | objfile->ei.entry_file_lowpc = INVALID_ENTRY_LOWPC; |
331 | objfile->ei.entry_file_highpc = INVALID_ENTRY_HIGHPC; | |
332 | objfile->ei.entry_func_lowpc = INVALID_ENTRY_LOWPC; | |
333 | objfile->ei.entry_func_highpc = INVALID_ENTRY_HIGHPC; | |
334 | objfile->ei.main_func_lowpc = INVALID_ENTRY_LOWPC; | |
335 | objfile->ei.main_func_highpc = INVALID_ENTRY_HIGHPC; | |
c906108c SS |
336 | } |
337 | ||
338 | /* Get current entry point address. */ | |
339 | ||
340 | CORE_ADDR | |
fba45db2 | 341 | entry_point_address (void) |
c906108c SS |
342 | { |
343 | return symfile_objfile ? symfile_objfile->ei.entry_point : 0; | |
344 | } | |
345 | ||
346 | /* Remember the lowest-addressed loadable section we've seen. | |
347 | This function is called via bfd_map_over_sections. | |
348 | ||
349 | In case of equal vmas, the section with the largest size becomes the | |
350 | lowest-addressed loadable section. | |
351 | ||
352 | If the vmas and sizes are equal, the last section is considered the | |
353 | lowest-addressed loadable section. */ | |
354 | ||
355 | void | |
4efb68b1 | 356 | find_lowest_section (bfd *abfd, asection *sect, void *obj) |
c906108c | 357 | { |
c5aa993b | 358 | asection **lowest = (asection **) obj; |
c906108c SS |
359 | |
360 | if (0 == (bfd_get_section_flags (abfd, sect) & SEC_LOAD)) | |
361 | return; | |
362 | if (!*lowest) | |
363 | *lowest = sect; /* First loadable section */ | |
364 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
365 | *lowest = sect; /* A lower loadable section */ | |
366 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
367 | && (bfd_section_size (abfd, (*lowest)) | |
368 | <= bfd_section_size (abfd, sect))) | |
369 | *lowest = sect; | |
370 | } | |
371 | ||
a39a16c4 MM |
372 | /* Create a new section_addr_info, with room for NUM_SECTIONS. */ |
373 | ||
374 | struct section_addr_info * | |
375 | alloc_section_addr_info (size_t num_sections) | |
376 | { | |
377 | struct section_addr_info *sap; | |
378 | size_t size; | |
379 | ||
380 | size = (sizeof (struct section_addr_info) | |
381 | + sizeof (struct other_sections) * (num_sections - 1)); | |
382 | sap = (struct section_addr_info *) xmalloc (size); | |
383 | memset (sap, 0, size); | |
384 | sap->num_sections = num_sections; | |
385 | ||
386 | return sap; | |
387 | } | |
62557bbc KB |
388 | |
389 | /* Build (allocate and populate) a section_addr_info struct from | |
390 | an existing section table. */ | |
391 | ||
392 | extern struct section_addr_info * | |
393 | build_section_addr_info_from_section_table (const struct section_table *start, | |
394 | const struct section_table *end) | |
395 | { | |
396 | struct section_addr_info *sap; | |
397 | const struct section_table *stp; | |
398 | int oidx; | |
399 | ||
a39a16c4 | 400 | sap = alloc_section_addr_info (end - start); |
62557bbc KB |
401 | |
402 | for (stp = start, oidx = 0; stp != end; stp++) | |
403 | { | |
fbd35540 MS |
404 | if (bfd_get_section_flags (stp->bfd, |
405 | stp->the_bfd_section) & (SEC_ALLOC | SEC_LOAD) | |
a39a16c4 | 406 | && oidx < end - start) |
62557bbc KB |
407 | { |
408 | sap->other[oidx].addr = stp->addr; | |
fbd35540 MS |
409 | sap->other[oidx].name |
410 | = xstrdup (bfd_section_name (stp->bfd, stp->the_bfd_section)); | |
62557bbc KB |
411 | sap->other[oidx].sectindex = stp->the_bfd_section->index; |
412 | oidx++; | |
413 | } | |
414 | } | |
415 | ||
416 | return sap; | |
417 | } | |
418 | ||
419 | ||
420 | /* Free all memory allocated by build_section_addr_info_from_section_table. */ | |
421 | ||
422 | extern void | |
423 | free_section_addr_info (struct section_addr_info *sap) | |
424 | { | |
425 | int idx; | |
426 | ||
a39a16c4 | 427 | for (idx = 0; idx < sap->num_sections; idx++) |
62557bbc | 428 | if (sap->other[idx].name) |
b8c9b27d KB |
429 | xfree (sap->other[idx].name); |
430 | xfree (sap); | |
62557bbc KB |
431 | } |
432 | ||
433 | ||
e8289572 JB |
434 | /* Initialize OBJFILE's sect_index_* members. */ |
435 | static void | |
436 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 437 | { |
e8289572 | 438 | asection *sect; |
c906108c | 439 | int i; |
e8289572 | 440 | |
b8fbeb18 EZ |
441 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
442 | if (sect) | |
443 | objfile->sect_index_text = sect->index; | |
444 | ||
445 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
446 | if (sect) | |
447 | objfile->sect_index_data = sect->index; | |
448 | ||
449 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
450 | if (sect) | |
451 | objfile->sect_index_bss = sect->index; | |
452 | ||
453 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
454 | if (sect) | |
455 | objfile->sect_index_rodata = sect->index; | |
456 | ||
bbcd32ad FF |
457 | /* This is where things get really weird... We MUST have valid |
458 | indices for the various sect_index_* members or gdb will abort. | |
459 | So if for example, there is no ".text" section, we have to | |
460 | accomodate that. Except when explicitly adding symbol files at | |
461 | some address, section_offsets contains nothing but zeros, so it | |
462 | doesn't matter which slot in section_offsets the individual | |
463 | sect_index_* members index into. So if they are all zero, it is | |
464 | safe to just point all the currently uninitialized indices to the | |
465 | first slot. */ | |
466 | ||
467 | for (i = 0; i < objfile->num_sections; i++) | |
468 | { | |
469 | if (ANOFFSET (objfile->section_offsets, i) != 0) | |
470 | { | |
471 | break; | |
472 | } | |
473 | } | |
474 | if (i == objfile->num_sections) | |
475 | { | |
476 | if (objfile->sect_index_text == -1) | |
477 | objfile->sect_index_text = 0; | |
478 | if (objfile->sect_index_data == -1) | |
479 | objfile->sect_index_data = 0; | |
480 | if (objfile->sect_index_bss == -1) | |
481 | objfile->sect_index_bss = 0; | |
482 | if (objfile->sect_index_rodata == -1) | |
483 | objfile->sect_index_rodata = 0; | |
484 | } | |
b8fbeb18 | 485 | } |
c906108c | 486 | |
e8289572 JB |
487 | |
488 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
489 | of how to represent it for fast symbol reading. This is the default | |
490 | version of the sym_fns.sym_offsets function for symbol readers that | |
491 | don't need to do anything special. It allocates a section_offsets table | |
492 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
493 | ||
494 | void | |
495 | default_symfile_offsets (struct objfile *objfile, | |
496 | struct section_addr_info *addrs) | |
497 | { | |
498 | int i; | |
499 | ||
a39a16c4 | 500 | objfile->num_sections = bfd_count_sections (objfile->obfd); |
e8289572 | 501 | objfile->section_offsets = (struct section_offsets *) |
a39a16c4 MM |
502 | obstack_alloc (&objfile->psymbol_obstack, |
503 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); | |
504 | memset (objfile->section_offsets, 0, | |
505 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); | |
e8289572 JB |
506 | |
507 | /* Now calculate offsets for section that were specified by the | |
508 | caller. */ | |
a39a16c4 | 509 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) |
e8289572 JB |
510 | { |
511 | struct other_sections *osp ; | |
512 | ||
513 | osp = &addrs->other[i] ; | |
514 | if (osp->addr == 0) | |
515 | continue; | |
516 | ||
517 | /* Record all sections in offsets */ | |
518 | /* The section_offsets in the objfile are here filled in using | |
519 | the BFD index. */ | |
520 | (objfile->section_offsets)->offsets[osp->sectindex] = osp->addr; | |
521 | } | |
522 | ||
523 | /* Remember the bfd indexes for the .text, .data, .bss and | |
524 | .rodata sections. */ | |
525 | init_objfile_sect_indices (objfile); | |
526 | } | |
527 | ||
528 | ||
c906108c SS |
529 | /* Process a symbol file, as either the main file or as a dynamically |
530 | loaded file. | |
531 | ||
96baa820 JM |
532 | OBJFILE is where the symbols are to be read from. |
533 | ||
7e8580c1 JB |
534 | ADDRS is the list of section load addresses. If the user has given |
535 | an 'add-symbol-file' command, then this is the list of offsets and | |
536 | addresses he or she provided as arguments to the command; or, if | |
537 | we're handling a shared library, these are the actual addresses the | |
538 | sections are loaded at, according to the inferior's dynamic linker | |
539 | (as gleaned by GDB's shared library code). We convert each address | |
540 | into an offset from the section VMA's as it appears in the object | |
541 | file, and then call the file's sym_offsets function to convert this | |
542 | into a format-specific offset table --- a `struct section_offsets'. | |
543 | If ADDRS is non-zero, OFFSETS must be zero. | |
544 | ||
545 | OFFSETS is a table of section offsets already in the right | |
546 | format-specific representation. NUM_OFFSETS is the number of | |
547 | elements present in OFFSETS->offsets. If OFFSETS is non-zero, we | |
548 | assume this is the proper table the call to sym_offsets described | |
549 | above would produce. Instead of calling sym_offsets, we just dump | |
550 | it right into objfile->section_offsets. (When we're re-reading | |
551 | symbols from an objfile, we don't have the original load address | |
552 | list any more; all we have is the section offset table.) If | |
553 | OFFSETS is non-zero, ADDRS must be zero. | |
96baa820 JM |
554 | |
555 | MAINLINE is nonzero if this is the main symbol file, or zero if | |
556 | it's an extra symbol file such as dynamically loaded code. | |
557 | ||
558 | VERBO is nonzero if the caller has printed a verbose message about | |
559 | the symbol reading (and complaints can be more terse about it). */ | |
c906108c SS |
560 | |
561 | void | |
7e8580c1 JB |
562 | syms_from_objfile (struct objfile *objfile, |
563 | struct section_addr_info *addrs, | |
564 | struct section_offsets *offsets, | |
565 | int num_offsets, | |
566 | int mainline, | |
567 | int verbo) | |
c906108c | 568 | { |
a39a16c4 | 569 | struct section_addr_info *local_addr = NULL; |
c906108c | 570 | struct cleanup *old_chain; |
2acceee2 | 571 | |
7e8580c1 | 572 | gdb_assert (! (addrs && offsets)); |
2acceee2 | 573 | |
c906108c SS |
574 | init_entry_point_info (objfile); |
575 | find_sym_fns (objfile); | |
576 | ||
75245b24 MS |
577 | if (objfile->sf == NULL) |
578 | return; /* No symbols. */ | |
579 | ||
c906108c SS |
580 | /* Make sure that partially constructed symbol tables will be cleaned up |
581 | if an error occurs during symbol reading. */ | |
74b7792f | 582 | old_chain = make_cleanup_free_objfile (objfile); |
c906108c | 583 | |
a39a16c4 MM |
584 | /* If ADDRS and OFFSETS are both NULL, put together a dummy address |
585 | list. We now establish the convention that an addr of zero means | |
586 | no load address was specified. */ | |
587 | if (! addrs && ! offsets) | |
588 | { | |
589 | local_addr | |
590 | = alloc_section_addr_info (bfd_count_sections (objfile->obfd)); | |
591 | make_cleanup (xfree, local_addr); | |
592 | addrs = local_addr; | |
593 | } | |
594 | ||
595 | /* Now either addrs or offsets is non-zero. */ | |
596 | ||
c5aa993b | 597 | if (mainline) |
c906108c SS |
598 | { |
599 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 600 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 601 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
602 | |
603 | /* Since no error yet, throw away the old symbol table. */ | |
604 | ||
605 | if (symfile_objfile != NULL) | |
606 | { | |
607 | free_objfile (symfile_objfile); | |
608 | symfile_objfile = NULL; | |
609 | } | |
610 | ||
611 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
612 | If the user wants to get rid of them, they should do "symbol-file" |
613 | without arguments first. Not sure this is the best behavior | |
614 | (PR 2207). */ | |
c906108c | 615 | |
c5aa993b | 616 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
617 | } |
618 | ||
619 | /* Convert addr into an offset rather than an absolute address. | |
620 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 621 | and assume that <addr> is where that got loaded. |
c906108c | 622 | |
53a5351d JM |
623 | We no longer warn if the lowest section is not a text segment (as |
624 | happens for the PA64 port. */ | |
1549f619 | 625 | if (!mainline && addrs && addrs->other[0].name) |
c906108c | 626 | { |
1549f619 EZ |
627 | asection *lower_sect; |
628 | asection *sect; | |
629 | CORE_ADDR lower_offset; | |
630 | int i; | |
631 | ||
2acceee2 JM |
632 | /* Find lowest loadable section to be used as starting point for |
633 | continguous sections. FIXME!! won't work without call to find | |
634 | .text first, but this assumes text is lowest section. */ | |
635 | lower_sect = bfd_get_section_by_name (objfile->obfd, ".text"); | |
636 | if (lower_sect == NULL) | |
c906108c | 637 | bfd_map_over_sections (objfile->obfd, find_lowest_section, |
4efb68b1 | 638 | &lower_sect); |
2acceee2 | 639 | if (lower_sect == NULL) |
c906108c SS |
640 | warning ("no loadable sections found in added symbol-file %s", |
641 | objfile->name); | |
b8fbeb18 EZ |
642 | else |
643 | if ((bfd_get_section_flags (objfile->obfd, lower_sect) & SEC_CODE) == 0) | |
644 | warning ("Lowest section in %s is %s at %s", | |
645 | objfile->name, | |
646 | bfd_section_name (objfile->obfd, lower_sect), | |
647 | paddr (bfd_section_vma (objfile->obfd, lower_sect))); | |
2acceee2 JM |
648 | if (lower_sect != NULL) |
649 | lower_offset = bfd_section_vma (objfile->obfd, lower_sect); | |
650 | else | |
651 | lower_offset = 0; | |
652 | ||
13de58df | 653 | /* Calculate offsets for the loadable sections. |
2acceee2 JM |
654 | FIXME! Sections must be in order of increasing loadable section |
655 | so that contiguous sections can use the lower-offset!!! | |
656 | ||
13de58df JB |
657 | Adjust offsets if the segments are not contiguous. |
658 | If the section is contiguous, its offset should be set to | |
2acceee2 JM |
659 | the offset of the highest loadable section lower than it |
660 | (the loadable section directly below it in memory). | |
661 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
662 | ||
1549f619 | 663 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) |
7e8580c1 JB |
664 | { |
665 | if (addrs->other[i].addr != 0) | |
666 | { | |
667 | sect = bfd_get_section_by_name (objfile->obfd, | |
668 | addrs->other[i].name); | |
669 | if (sect) | |
670 | { | |
671 | addrs->other[i].addr | |
672 | -= bfd_section_vma (objfile->obfd, sect); | |
673 | lower_offset = addrs->other[i].addr; | |
674 | /* This is the index used by BFD. */ | |
675 | addrs->other[i].sectindex = sect->index ; | |
676 | } | |
677 | else | |
678 | { | |
679 | warning ("section %s not found in %s", | |
680 | addrs->other[i].name, | |
681 | objfile->name); | |
682 | addrs->other[i].addr = 0; | |
683 | } | |
684 | } | |
685 | else | |
686 | addrs->other[i].addr = lower_offset; | |
687 | } | |
c906108c SS |
688 | } |
689 | ||
690 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
691 | appear for this new file, and record how verbose to be, then do the | |
692 | initial symbol reading for this file. */ | |
693 | ||
c5aa993b | 694 | (*objfile->sf->sym_init) (objfile); |
b9caf505 | 695 | clear_complaints (&symfile_complaints, 1, verbo); |
c906108c | 696 | |
7e8580c1 JB |
697 | if (addrs) |
698 | (*objfile->sf->sym_offsets) (objfile, addrs); | |
699 | else | |
700 | { | |
701 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_offsets); | |
702 | ||
703 | /* Just copy in the offset table directly as given to us. */ | |
704 | objfile->num_sections = num_offsets; | |
705 | objfile->section_offsets | |
706 | = ((struct section_offsets *) | |
707 | obstack_alloc (&objfile->psymbol_obstack, size)); | |
708 | memcpy (objfile->section_offsets, offsets, size); | |
709 | ||
710 | init_objfile_sect_indices (objfile); | |
711 | } | |
c906108c | 712 | |
52d16ba8 | 713 | #ifndef DEPRECATED_IBM6000_TARGET |
c906108c SS |
714 | /* This is a SVR4/SunOS specific hack, I think. In any event, it |
715 | screws RS/6000. sym_offsets should be doing this sort of thing, | |
716 | because it knows the mapping between bfd sections and | |
717 | section_offsets. */ | |
718 | /* This is a hack. As far as I can tell, section offsets are not | |
719 | target dependent. They are all set to addr with a couple of | |
720 | exceptions. The exceptions are sysvr4 shared libraries, whose | |
721 | offsets are kept in solib structures anyway and rs6000 xcoff | |
722 | which handles shared libraries in a completely unique way. | |
723 | ||
724 | Section offsets are built similarly, except that they are built | |
725 | by adding addr in all cases because there is no clear mapping | |
726 | from section_offsets into actual sections. Note that solib.c | |
96baa820 | 727 | has a different algorithm for finding section offsets. |
c906108c SS |
728 | |
729 | These should probably all be collapsed into some target | |
730 | independent form of shared library support. FIXME. */ | |
731 | ||
2acceee2 | 732 | if (addrs) |
c906108c SS |
733 | { |
734 | struct obj_section *s; | |
735 | ||
2acceee2 JM |
736 | /* Map section offsets in "addr" back to the object's |
737 | sections by comparing the section names with bfd's | |
738 | section names. Then adjust the section address by | |
739 | the offset. */ /* for gdb/13815 */ | |
740 | ||
96baa820 | 741 | ALL_OBJFILE_OSECTIONS (objfile, s) |
c906108c | 742 | { |
2acceee2 JM |
743 | CORE_ADDR s_addr = 0; |
744 | int i; | |
745 | ||
62557bbc | 746 | for (i = 0; |
a39a16c4 | 747 | !s_addr && i < addrs->num_sections && addrs->other[i].name; |
62557bbc | 748 | i++) |
fbd35540 MS |
749 | if (strcmp (bfd_section_name (s->objfile->obfd, |
750 | s->the_bfd_section), | |
751 | addrs->other[i].name) == 0) | |
2acceee2 JM |
752 | s_addr = addrs->other[i].addr; /* end added for gdb/13815 */ |
753 | ||
c906108c | 754 | s->addr -= s->offset; |
2acceee2 | 755 | s->addr += s_addr; |
c906108c | 756 | s->endaddr -= s->offset; |
2acceee2 JM |
757 | s->endaddr += s_addr; |
758 | s->offset += s_addr; | |
c906108c SS |
759 | } |
760 | } | |
52d16ba8 | 761 | #endif /* not DEPRECATED_IBM6000_TARGET */ |
c906108c | 762 | |
96baa820 | 763 | (*objfile->sf->sym_read) (objfile, mainline); |
c906108c | 764 | |
c906108c SS |
765 | /* Don't allow char * to have a typename (else would get caddr_t). |
766 | Ditto void *. FIXME: Check whether this is now done by all the | |
767 | symbol readers themselves (many of them now do), and if so remove | |
768 | it from here. */ | |
769 | ||
770 | TYPE_NAME (lookup_pointer_type (builtin_type_char)) = 0; | |
771 | TYPE_NAME (lookup_pointer_type (builtin_type_void)) = 0; | |
772 | ||
773 | /* Mark the objfile has having had initial symbol read attempted. Note | |
774 | that this does not mean we found any symbols... */ | |
775 | ||
c5aa993b | 776 | objfile->flags |= OBJF_SYMS; |
c906108c SS |
777 | |
778 | /* Discard cleanups as symbol reading was successful. */ | |
779 | ||
780 | discard_cleanups (old_chain); | |
c906108c SS |
781 | } |
782 | ||
783 | /* Perform required actions after either reading in the initial | |
784 | symbols for a new objfile, or mapping in the symbols from a reusable | |
785 | objfile. */ | |
c5aa993b | 786 | |
c906108c | 787 | void |
fba45db2 | 788 | new_symfile_objfile (struct objfile *objfile, int mainline, int verbo) |
c906108c SS |
789 | { |
790 | ||
791 | /* If this is the main symbol file we have to clean up all users of the | |
792 | old main symbol file. Otherwise it is sufficient to fixup all the | |
793 | breakpoints that may have been redefined by this symbol file. */ | |
794 | if (mainline) | |
795 | { | |
796 | /* OK, make it the "real" symbol file. */ | |
797 | symfile_objfile = objfile; | |
798 | ||
799 | clear_symtab_users (); | |
800 | } | |
801 | else | |
802 | { | |
803 | breakpoint_re_set (); | |
804 | } | |
805 | ||
806 | /* We're done reading the symbol file; finish off complaints. */ | |
b9caf505 | 807 | clear_complaints (&symfile_complaints, 0, verbo); |
c906108c SS |
808 | } |
809 | ||
810 | /* Process a symbol file, as either the main file or as a dynamically | |
811 | loaded file. | |
812 | ||
813 | NAME is the file name (which will be tilde-expanded and made | |
814 | absolute herein) (but we don't free or modify NAME itself). | |
7904e09f JB |
815 | |
816 | FROM_TTY says how verbose to be. | |
817 | ||
818 | MAINLINE specifies whether this is the main symbol file, or whether | |
819 | it's an extra symbol file such as dynamically loaded code. | |
820 | ||
821 | ADDRS, OFFSETS, and NUM_OFFSETS are as described for | |
822 | syms_from_objfile, above. ADDRS is ignored when MAINLINE is | |
823 | non-zero. | |
c906108c | 824 | |
c906108c SS |
825 | Upon success, returns a pointer to the objfile that was added. |
826 | Upon failure, jumps back to command level (never returns). */ | |
7904e09f JB |
827 | static struct objfile * |
828 | symbol_file_add_with_addrs_or_offsets (char *name, int from_tty, | |
829 | struct section_addr_info *addrs, | |
830 | struct section_offsets *offsets, | |
831 | int num_offsets, | |
832 | int mainline, int flags) | |
c906108c SS |
833 | { |
834 | struct objfile *objfile; | |
835 | struct partial_symtab *psymtab; | |
5b5d99cf | 836 | char *debugfile; |
c906108c | 837 | bfd *abfd; |
a39a16c4 MM |
838 | struct section_addr_info *orig_addrs; |
839 | struct cleanup *my_cleanups; | |
c906108c SS |
840 | |
841 | /* Open a bfd for the file, and give user a chance to burp if we'd be | |
842 | interactively wiping out any existing symbols. */ | |
843 | ||
844 | abfd = symfile_bfd_open (name); | |
845 | ||
846 | if ((have_full_symbols () || have_partial_symbols ()) | |
847 | && mainline | |
848 | && from_tty | |
849 | && !query ("Load new symbol table from \"%s\"? ", name)) | |
c5aa993b | 850 | error ("Not confirmed."); |
c906108c | 851 | |
2df3850c | 852 | objfile = allocate_objfile (abfd, flags); |
c906108c | 853 | |
a39a16c4 MM |
854 | orig_addrs = alloc_section_addr_info (bfd_count_sections (abfd)); |
855 | my_cleanups = make_cleanup (xfree, orig_addrs); | |
856 | if (addrs) | |
857 | *orig_addrs = *addrs; | |
858 | ||
c906108c SS |
859 | /* If the objfile uses a mapped symbol file, and we have a psymtab for |
860 | it, then skip reading any symbols at this time. */ | |
861 | ||
c5aa993b | 862 | if ((objfile->flags & OBJF_MAPPED) && (objfile->flags & OBJF_SYMS)) |
c906108c SS |
863 | { |
864 | /* We mapped in an existing symbol table file that already has had | |
c5aa993b JM |
865 | initial symbol reading performed, so we can skip that part. Notify |
866 | the user that instead of reading the symbols, they have been mapped. | |
867 | */ | |
c906108c SS |
868 | if (from_tty || info_verbose) |
869 | { | |
870 | printf_filtered ("Mapped symbols for %s...", name); | |
871 | wrap_here (""); | |
872 | gdb_flush (gdb_stdout); | |
873 | } | |
874 | init_entry_point_info (objfile); | |
875 | find_sym_fns (objfile); | |
876 | } | |
877 | else | |
878 | { | |
879 | /* We either created a new mapped symbol table, mapped an existing | |
c5aa993b JM |
880 | symbol table file which has not had initial symbol reading |
881 | performed, or need to read an unmapped symbol table. */ | |
c906108c SS |
882 | if (from_tty || info_verbose) |
883 | { | |
884 | if (pre_add_symbol_hook) | |
885 | pre_add_symbol_hook (name); | |
886 | else | |
887 | { | |
888 | printf_filtered ("Reading symbols from %s...", name); | |
889 | wrap_here (""); | |
890 | gdb_flush (gdb_stdout); | |
891 | } | |
892 | } | |
7904e09f JB |
893 | syms_from_objfile (objfile, addrs, offsets, num_offsets, |
894 | mainline, from_tty); | |
c906108c SS |
895 | } |
896 | ||
897 | /* We now have at least a partial symbol table. Check to see if the | |
898 | user requested that all symbols be read on initial access via either | |
899 | the gdb startup command line or on a per symbol file basis. Expand | |
900 | all partial symbol tables for this objfile if so. */ | |
901 | ||
2acceee2 | 902 | if ((flags & OBJF_READNOW) || readnow_symbol_files) |
c906108c SS |
903 | { |
904 | if (from_tty || info_verbose) | |
905 | { | |
906 | printf_filtered ("expanding to full symbols..."); | |
907 | wrap_here (""); | |
908 | gdb_flush (gdb_stdout); | |
909 | } | |
910 | ||
c5aa993b | 911 | for (psymtab = objfile->psymtabs; |
c906108c | 912 | psymtab != NULL; |
c5aa993b | 913 | psymtab = psymtab->next) |
c906108c SS |
914 | { |
915 | psymtab_to_symtab (psymtab); | |
916 | } | |
917 | } | |
918 | ||
5b5d99cf JB |
919 | debugfile = find_separate_debug_file (objfile); |
920 | if (debugfile) | |
921 | { | |
5b5d99cf JB |
922 | if (addrs != NULL) |
923 | { | |
924 | objfile->separate_debug_objfile | |
a39a16c4 | 925 | = symbol_file_add (debugfile, from_tty, orig_addrs, 0, flags); |
5b5d99cf JB |
926 | } |
927 | else | |
928 | { | |
929 | objfile->separate_debug_objfile | |
930 | = symbol_file_add (debugfile, from_tty, NULL, 0, flags); | |
931 | } | |
932 | objfile->separate_debug_objfile->separate_debug_objfile_backlink | |
933 | = objfile; | |
934 | ||
935 | /* Put the separate debug object before the normal one, this is so that | |
936 | usage of the ALL_OBJFILES_SAFE macro will stay safe. */ | |
937 | put_objfile_before (objfile->separate_debug_objfile, objfile); | |
938 | ||
939 | xfree (debugfile); | |
940 | } | |
941 | ||
cb3c37b2 JB |
942 | if (!have_partial_symbols () && !have_full_symbols ()) |
943 | { | |
944 | wrap_here (""); | |
945 | printf_filtered ("(no debugging symbols found)..."); | |
946 | wrap_here (""); | |
947 | } | |
948 | ||
c906108c SS |
949 | if (from_tty || info_verbose) |
950 | { | |
951 | if (post_add_symbol_hook) | |
c5aa993b | 952 | post_add_symbol_hook (); |
c906108c | 953 | else |
c5aa993b JM |
954 | { |
955 | printf_filtered ("done.\n"); | |
c5aa993b | 956 | } |
c906108c SS |
957 | } |
958 | ||
481d0f41 JB |
959 | /* We print some messages regardless of whether 'from_tty || |
960 | info_verbose' is true, so make sure they go out at the right | |
961 | time. */ | |
962 | gdb_flush (gdb_stdout); | |
963 | ||
a39a16c4 MM |
964 | do_cleanups (my_cleanups); |
965 | ||
109f874e MS |
966 | if (objfile->sf == NULL) |
967 | return objfile; /* No symbols. */ | |
968 | ||
c906108c SS |
969 | new_symfile_objfile (objfile, mainline, from_tty); |
970 | ||
11cf8741 JM |
971 | if (target_new_objfile_hook) |
972 | target_new_objfile_hook (objfile); | |
c906108c SS |
973 | |
974 | return (objfile); | |
975 | } | |
976 | ||
7904e09f JB |
977 | |
978 | /* Process a symbol file, as either the main file or as a dynamically | |
979 | loaded file. See symbol_file_add_with_addrs_or_offsets's comments | |
980 | for details. */ | |
981 | struct objfile * | |
982 | symbol_file_add (char *name, int from_tty, struct section_addr_info *addrs, | |
983 | int mainline, int flags) | |
984 | { | |
985 | return symbol_file_add_with_addrs_or_offsets (name, from_tty, addrs, 0, 0, | |
986 | mainline, flags); | |
987 | } | |
988 | ||
989 | ||
d7db6da9 FN |
990 | /* Call symbol_file_add() with default values and update whatever is |
991 | affected by the loading of a new main(). | |
992 | Used when the file is supplied in the gdb command line | |
993 | and by some targets with special loading requirements. | |
994 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
995 | argument for the switches that can only be specified in the symbol_file | |
996 | command itself. */ | |
1adeb98a FN |
997 | |
998 | void | |
999 | symbol_file_add_main (char *args, int from_tty) | |
1000 | { | |
d7db6da9 FN |
1001 | symbol_file_add_main_1 (args, from_tty, 0); |
1002 | } | |
1003 | ||
1004 | static void | |
1005 | symbol_file_add_main_1 (char *args, int from_tty, int flags) | |
1006 | { | |
1007 | symbol_file_add (args, from_tty, NULL, 1, flags); | |
1008 | ||
1009 | #ifdef HPUXHPPA | |
1010 | RESET_HP_UX_GLOBALS (); | |
1011 | #endif | |
1012 | ||
1013 | /* Getting new symbols may change our opinion about | |
1014 | what is frameless. */ | |
1015 | reinit_frame_cache (); | |
1016 | ||
1017 | set_initial_language (); | |
1adeb98a FN |
1018 | } |
1019 | ||
1020 | void | |
1021 | symbol_file_clear (int from_tty) | |
1022 | { | |
1023 | if ((have_full_symbols () || have_partial_symbols ()) | |
1024 | && from_tty | |
1025 | && !query ("Discard symbol table from `%s'? ", | |
1026 | symfile_objfile->name)) | |
1027 | error ("Not confirmed."); | |
1028 | free_all_objfiles (); | |
1029 | ||
1030 | /* solib descriptors may have handles to objfiles. Since their | |
1031 | storage has just been released, we'd better wipe the solib | |
1032 | descriptors as well. | |
1033 | */ | |
1034 | #if defined(SOLIB_RESTART) | |
1035 | SOLIB_RESTART (); | |
1036 | #endif | |
1037 | ||
1038 | symfile_objfile = NULL; | |
1039 | if (from_tty) | |
1040 | printf_unfiltered ("No symbol file now.\n"); | |
1041 | #ifdef HPUXHPPA | |
1042 | RESET_HP_UX_GLOBALS (); | |
1043 | #endif | |
1044 | } | |
1045 | ||
5b5d99cf JB |
1046 | static char * |
1047 | get_debug_link_info (struct objfile *objfile, unsigned long *crc32_out) | |
1048 | { | |
1049 | asection *sect; | |
1050 | bfd_size_type debuglink_size; | |
1051 | unsigned long crc32; | |
1052 | char *contents; | |
1053 | int crc_offset; | |
1054 | unsigned char *p; | |
1055 | ||
1056 | sect = bfd_get_section_by_name (objfile->obfd, ".gnu_debuglink"); | |
1057 | ||
1058 | if (sect == NULL) | |
1059 | return NULL; | |
1060 | ||
1061 | debuglink_size = bfd_section_size (objfile->obfd, sect); | |
1062 | ||
1063 | contents = xmalloc (debuglink_size); | |
1064 | bfd_get_section_contents (objfile->obfd, sect, contents, | |
1065 | (file_ptr)0, (bfd_size_type)debuglink_size); | |
1066 | ||
1067 | /* Crc value is stored after the filename, aligned up to 4 bytes. */ | |
1068 | crc_offset = strlen (contents) + 1; | |
1069 | crc_offset = (crc_offset + 3) & ~3; | |
1070 | ||
1071 | crc32 = bfd_get_32 (objfile->obfd, (bfd_byte *) (contents + crc_offset)); | |
1072 | ||
1073 | *crc32_out = crc32; | |
1074 | return contents; | |
1075 | } | |
1076 | ||
1077 | static int | |
1078 | separate_debug_file_exists (const char *name, unsigned long crc) | |
1079 | { | |
1080 | unsigned long file_crc = 0; | |
1081 | int fd; | |
1082 | char buffer[8*1024]; | |
1083 | int count; | |
1084 | ||
1085 | fd = open (name, O_RDONLY | O_BINARY); | |
1086 | if (fd < 0) | |
1087 | return 0; | |
1088 | ||
1089 | while ((count = read (fd, buffer, sizeof (buffer))) > 0) | |
1090 | file_crc = gnu_debuglink_crc32 (file_crc, buffer, count); | |
1091 | ||
1092 | close (fd); | |
1093 | ||
1094 | return crc == file_crc; | |
1095 | } | |
1096 | ||
1097 | static char *debug_file_directory = NULL; | |
1098 | ||
1099 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1100 | #define DEBUG_SUBDIRECTORY ".debug" | |
1101 | #endif | |
1102 | ||
1103 | static char * | |
1104 | find_separate_debug_file (struct objfile *objfile) | |
1105 | { | |
1106 | asection *sect; | |
1107 | char *basename; | |
1108 | char *dir; | |
1109 | char *debugfile; | |
1110 | char *name_copy; | |
1111 | bfd_size_type debuglink_size; | |
1112 | unsigned long crc32; | |
1113 | int i; | |
1114 | ||
1115 | basename = get_debug_link_info (objfile, &crc32); | |
1116 | ||
1117 | if (basename == NULL) | |
1118 | return NULL; | |
1119 | ||
1120 | dir = xstrdup (objfile->name); | |
1121 | ||
fe36c4f4 JB |
1122 | /* Strip off the final filename part, leaving the directory name, |
1123 | followed by a slash. Objfile names should always be absolute and | |
1124 | tilde-expanded, so there should always be a slash in there | |
1125 | somewhere. */ | |
5b5d99cf JB |
1126 | for (i = strlen(dir) - 1; i >= 0; i--) |
1127 | { | |
1128 | if (IS_DIR_SEPARATOR (dir[i])) | |
1129 | break; | |
1130 | } | |
fe36c4f4 | 1131 | gdb_assert (i >= 0 && IS_DIR_SEPARATOR (dir[i])); |
5b5d99cf JB |
1132 | dir[i+1] = '\0'; |
1133 | ||
1134 | debugfile = alloca (strlen (debug_file_directory) + 1 | |
1135 | + strlen (dir) | |
1136 | + strlen (DEBUG_SUBDIRECTORY) | |
1137 | + strlen ("/") | |
1138 | + strlen (basename) | |
1139 | + 1); | |
1140 | ||
1141 | /* First try in the same directory as the original file. */ | |
1142 | strcpy (debugfile, dir); | |
1143 | strcat (debugfile, basename); | |
1144 | ||
1145 | if (separate_debug_file_exists (debugfile, crc32)) | |
1146 | { | |
1147 | xfree (basename); | |
1148 | xfree (dir); | |
1149 | return xstrdup (debugfile); | |
1150 | } | |
1151 | ||
1152 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ | |
1153 | strcpy (debugfile, dir); | |
1154 | strcat (debugfile, DEBUG_SUBDIRECTORY); | |
1155 | strcat (debugfile, "/"); | |
1156 | strcat (debugfile, basename); | |
1157 | ||
1158 | if (separate_debug_file_exists (debugfile, crc32)) | |
1159 | { | |
1160 | xfree (basename); | |
1161 | xfree (dir); | |
1162 | return xstrdup (debugfile); | |
1163 | } | |
1164 | ||
1165 | /* Then try in the global debugfile directory. */ | |
1166 | strcpy (debugfile, debug_file_directory); | |
1167 | strcat (debugfile, "/"); | |
1168 | strcat (debugfile, dir); | |
5b5d99cf JB |
1169 | strcat (debugfile, basename); |
1170 | ||
1171 | if (separate_debug_file_exists (debugfile, crc32)) | |
1172 | { | |
1173 | xfree (basename); | |
1174 | xfree (dir); | |
1175 | return xstrdup (debugfile); | |
1176 | } | |
1177 | ||
1178 | xfree (basename); | |
1179 | xfree (dir); | |
1180 | return NULL; | |
1181 | } | |
1182 | ||
1183 | ||
c906108c SS |
1184 | /* This is the symbol-file command. Read the file, analyze its |
1185 | symbols, and add a struct symtab to a symtab list. The syntax of | |
1186 | the command is rather bizarre--(1) buildargv implements various | |
1187 | quoting conventions which are undocumented and have little or | |
1188 | nothing in common with the way things are quoted (or not quoted) | |
1189 | elsewhere in GDB, (2) options are used, which are not generally | |
1190 | used in GDB (perhaps "set mapped on", "set readnow on" would be | |
1191 | better), (3) the order of options matters, which is contrary to GNU | |
1192 | conventions (because it is confusing and inconvenient). */ | |
4da95fc4 EZ |
1193 | /* Note: ezannoni 2000-04-17. This function used to have support for |
1194 | rombug (see remote-os9k.c). It consisted of a call to target_link() | |
1195 | (target.c) to get the address of the text segment from the target, | |
1196 | and pass that to symbol_file_add(). This is no longer supported. */ | |
c906108c SS |
1197 | |
1198 | void | |
fba45db2 | 1199 | symbol_file_command (char *args, int from_tty) |
c906108c SS |
1200 | { |
1201 | char **argv; | |
1202 | char *name = NULL; | |
c906108c | 1203 | struct cleanup *cleanups; |
2df3850c | 1204 | int flags = OBJF_USERLOADED; |
c906108c SS |
1205 | |
1206 | dont_repeat (); | |
1207 | ||
1208 | if (args == NULL) | |
1209 | { | |
1adeb98a | 1210 | symbol_file_clear (from_tty); |
c906108c SS |
1211 | } |
1212 | else | |
1213 | { | |
1214 | if ((argv = buildargv (args)) == NULL) | |
1215 | { | |
1216 | nomem (0); | |
1217 | } | |
7a292a7a | 1218 | cleanups = make_cleanup_freeargv (argv); |
c906108c SS |
1219 | while (*argv != NULL) |
1220 | { | |
1221 | if (STREQ (*argv, "-mapped")) | |
4da95fc4 EZ |
1222 | flags |= OBJF_MAPPED; |
1223 | else | |
1224 | if (STREQ (*argv, "-readnow")) | |
2acceee2 | 1225 | flags |= OBJF_READNOW; |
4da95fc4 EZ |
1226 | else |
1227 | if (**argv == '-') | |
1228 | error ("unknown option `%s'", *argv); | |
c5aa993b | 1229 | else |
c5aa993b | 1230 | { |
4da95fc4 | 1231 | name = *argv; |
c906108c | 1232 | |
d7db6da9 | 1233 | symbol_file_add_main_1 (name, from_tty, flags); |
4da95fc4 | 1234 | } |
c906108c SS |
1235 | argv++; |
1236 | } | |
1237 | ||
1238 | if (name == NULL) | |
1239 | { | |
1240 | error ("no symbol file name was specified"); | |
1241 | } | |
c906108c SS |
1242 | do_cleanups (cleanups); |
1243 | } | |
1244 | } | |
1245 | ||
1246 | /* Set the initial language. | |
1247 | ||
1248 | A better solution would be to record the language in the psymtab when reading | |
1249 | partial symbols, and then use it (if known) to set the language. This would | |
1250 | be a win for formats that encode the language in an easily discoverable place, | |
1251 | such as DWARF. For stabs, we can jump through hoops looking for specially | |
1252 | named symbols or try to intuit the language from the specific type of stabs | |
1253 | we find, but we can't do that until later when we read in full symbols. | |
1254 | FIXME. */ | |
1255 | ||
1256 | static void | |
fba45db2 | 1257 | set_initial_language (void) |
c906108c SS |
1258 | { |
1259 | struct partial_symtab *pst; | |
c5aa993b | 1260 | enum language lang = language_unknown; |
c906108c SS |
1261 | |
1262 | pst = find_main_psymtab (); | |
1263 | if (pst != NULL) | |
1264 | { | |
c5aa993b | 1265 | if (pst->filename != NULL) |
c906108c | 1266 | { |
c5aa993b JM |
1267 | lang = deduce_language_from_filename (pst->filename); |
1268 | } | |
c906108c SS |
1269 | if (lang == language_unknown) |
1270 | { | |
c5aa993b JM |
1271 | /* Make C the default language */ |
1272 | lang = language_c; | |
c906108c SS |
1273 | } |
1274 | set_language (lang); | |
1275 | expected_language = current_language; /* Don't warn the user */ | |
1276 | } | |
1277 | } | |
1278 | ||
1279 | /* Open file specified by NAME and hand it off to BFD for preliminary | |
1280 | analysis. Result is a newly initialized bfd *, which includes a newly | |
1281 | malloc'd` copy of NAME (tilde-expanded and made absolute). | |
1282 | In case of trouble, error() is called. */ | |
1283 | ||
1284 | bfd * | |
fba45db2 | 1285 | symfile_bfd_open (char *name) |
c906108c SS |
1286 | { |
1287 | bfd *sym_bfd; | |
1288 | int desc; | |
1289 | char *absolute_name; | |
1290 | ||
1291 | ||
1292 | ||
1293 | name = tilde_expand (name); /* Returns 1st new malloc'd copy */ | |
1294 | ||
1295 | /* Look down path for it, allocate 2nd new malloc'd copy. */ | |
1296 | desc = openp (getenv ("PATH"), 1, name, O_RDONLY | O_BINARY, 0, &absolute_name); | |
608506ed | 1297 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
c906108c SS |
1298 | if (desc < 0) |
1299 | { | |
1300 | char *exename = alloca (strlen (name) + 5); | |
1301 | strcat (strcpy (exename, name), ".exe"); | |
1302 | desc = openp (getenv ("PATH"), 1, exename, O_RDONLY | O_BINARY, | |
c5aa993b | 1303 | 0, &absolute_name); |
c906108c SS |
1304 | } |
1305 | #endif | |
1306 | if (desc < 0) | |
1307 | { | |
b8c9b27d | 1308 | make_cleanup (xfree, name); |
c906108c SS |
1309 | perror_with_name (name); |
1310 | } | |
b8c9b27d | 1311 | xfree (name); /* Free 1st new malloc'd copy */ |
c906108c | 1312 | name = absolute_name; /* Keep 2nd malloc'd copy in bfd */ |
c5aa993b | 1313 | /* It'll be freed in free_objfile(). */ |
c906108c SS |
1314 | |
1315 | sym_bfd = bfd_fdopenr (name, gnutarget, desc); | |
1316 | if (!sym_bfd) | |
1317 | { | |
1318 | close (desc); | |
b8c9b27d | 1319 | make_cleanup (xfree, name); |
c906108c SS |
1320 | error ("\"%s\": can't open to read symbols: %s.", name, |
1321 | bfd_errmsg (bfd_get_error ())); | |
1322 | } | |
81a9a963 | 1323 | sym_bfd->cacheable = 1; |
c906108c SS |
1324 | |
1325 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1326 | { | |
1327 | /* FIXME: should be checking for errors from bfd_close (for one thing, | |
c5aa993b JM |
1328 | on error it does not free all the storage associated with the |
1329 | bfd). */ | |
c906108c | 1330 | bfd_close (sym_bfd); /* This also closes desc */ |
b8c9b27d | 1331 | make_cleanup (xfree, name); |
c906108c SS |
1332 | error ("\"%s\": can't read symbols: %s.", name, |
1333 | bfd_errmsg (bfd_get_error ())); | |
1334 | } | |
1335 | return (sym_bfd); | |
1336 | } | |
1337 | ||
0e931cf0 JB |
1338 | /* Return the section index for the given section name. Return -1 if |
1339 | the section was not found. */ | |
1340 | int | |
1341 | get_section_index (struct objfile *objfile, char *section_name) | |
1342 | { | |
1343 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
1344 | if (sect) | |
1345 | return sect->index; | |
1346 | else | |
1347 | return -1; | |
1348 | } | |
1349 | ||
c906108c SS |
1350 | /* Link a new symtab_fns into the global symtab_fns list. Called on gdb |
1351 | startup by the _initialize routine in each object file format reader, | |
1352 | to register information about each format the the reader is prepared | |
1353 | to handle. */ | |
1354 | ||
1355 | void | |
fba45db2 | 1356 | add_symtab_fns (struct sym_fns *sf) |
c906108c SS |
1357 | { |
1358 | sf->next = symtab_fns; | |
1359 | symtab_fns = sf; | |
1360 | } | |
1361 | ||
1362 | ||
1363 | /* Initialize to read symbols from the symbol file sym_bfd. It either | |
1364 | returns or calls error(). The result is an initialized struct sym_fns | |
1365 | in the objfile structure, that contains cached information about the | |
1366 | symbol file. */ | |
1367 | ||
1368 | static void | |
fba45db2 | 1369 | find_sym_fns (struct objfile *objfile) |
c906108c SS |
1370 | { |
1371 | struct sym_fns *sf; | |
c5aa993b JM |
1372 | enum bfd_flavour our_flavour = bfd_get_flavour (objfile->obfd); |
1373 | char *our_target = bfd_get_target (objfile->obfd); | |
c906108c | 1374 | |
75245b24 MS |
1375 | if (our_flavour == bfd_target_srec_flavour |
1376 | || our_flavour == bfd_target_ihex_flavour | |
1377 | || our_flavour == bfd_target_tekhex_flavour) | |
1378 | return; /* No symbols. */ | |
1379 | ||
c5aa993b | 1380 | for (sf = symtab_fns; sf != NULL; sf = sf->next) |
c906108c | 1381 | { |
c5aa993b | 1382 | if (our_flavour == sf->sym_flavour) |
c906108c | 1383 | { |
c5aa993b | 1384 | objfile->sf = sf; |
c906108c SS |
1385 | return; |
1386 | } | |
1387 | } | |
1388 | error ("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown.", | |
c5aa993b | 1389 | bfd_get_target (objfile->obfd)); |
c906108c SS |
1390 | } |
1391 | \f | |
1392 | /* This function runs the load command of our current target. */ | |
1393 | ||
1394 | static void | |
fba45db2 | 1395 | load_command (char *arg, int from_tty) |
c906108c SS |
1396 | { |
1397 | if (arg == NULL) | |
1398 | arg = get_exec_file (1); | |
1399 | target_load (arg, from_tty); | |
2889e661 JB |
1400 | |
1401 | /* After re-loading the executable, we don't really know which | |
1402 | overlays are mapped any more. */ | |
1403 | overlay_cache_invalid = 1; | |
c906108c SS |
1404 | } |
1405 | ||
1406 | /* This version of "load" should be usable for any target. Currently | |
1407 | it is just used for remote targets, not inftarg.c or core files, | |
1408 | on the theory that only in that case is it useful. | |
1409 | ||
1410 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1411 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1412 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1413 | performance compares. */ | |
917317f4 JM |
1414 | |
1415 | static int download_write_size = 512; | |
1416 | static int validate_download = 0; | |
1417 | ||
e4f9b4d5 MS |
1418 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1419 | ||
1420 | static void | |
1421 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1422 | { | |
1423 | bfd_size_type *sum = data; | |
1424 | ||
1425 | *sum += bfd_get_section_size_before_reloc (asec); | |
1426 | } | |
1427 | ||
1428 | /* Opaque data for load_section_callback. */ | |
1429 | struct load_section_data { | |
1430 | unsigned long load_offset; | |
1431 | unsigned long write_count; | |
1432 | unsigned long data_count; | |
1433 | bfd_size_type total_size; | |
1434 | }; | |
1435 | ||
1436 | /* Callback service function for generic_load (bfd_map_over_sections). */ | |
1437 | ||
1438 | static void | |
1439 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
1440 | { | |
1441 | struct load_section_data *args = data; | |
1442 | ||
1443 | if (bfd_get_section_flags (abfd, asec) & SEC_LOAD) | |
1444 | { | |
1445 | bfd_size_type size = bfd_get_section_size_before_reloc (asec); | |
1446 | if (size > 0) | |
1447 | { | |
1448 | char *buffer; | |
1449 | struct cleanup *old_chain; | |
1450 | CORE_ADDR lma = bfd_section_lma (abfd, asec) + args->load_offset; | |
1451 | bfd_size_type block_size; | |
1452 | int err; | |
1453 | const char *sect_name = bfd_get_section_name (abfd, asec); | |
1454 | bfd_size_type sent; | |
1455 | ||
1456 | if (download_write_size > 0 && size > download_write_size) | |
1457 | block_size = download_write_size; | |
1458 | else | |
1459 | block_size = size; | |
1460 | ||
1461 | buffer = xmalloc (size); | |
1462 | old_chain = make_cleanup (xfree, buffer); | |
1463 | ||
1464 | /* Is this really necessary? I guess it gives the user something | |
1465 | to look at during a long download. */ | |
e4f9b4d5 MS |
1466 | ui_out_message (uiout, 0, "Loading section %s, size 0x%s lma 0x%s\n", |
1467 | sect_name, paddr_nz (size), paddr_nz (lma)); | |
e4f9b4d5 MS |
1468 | |
1469 | bfd_get_section_contents (abfd, asec, buffer, 0, size); | |
1470 | ||
1471 | sent = 0; | |
1472 | do | |
1473 | { | |
1474 | int len; | |
1475 | bfd_size_type this_transfer = size - sent; | |
1476 | ||
1477 | if (this_transfer >= block_size) | |
1478 | this_transfer = block_size; | |
1479 | len = target_write_memory_partial (lma, buffer, | |
1480 | this_transfer, &err); | |
1481 | if (err) | |
1482 | break; | |
1483 | if (validate_download) | |
1484 | { | |
1485 | /* Broken memories and broken monitors manifest | |
1486 | themselves here when bring new computers to | |
1487 | life. This doubles already slow downloads. */ | |
1488 | /* NOTE: cagney/1999-10-18: A more efficient | |
1489 | implementation might add a verify_memory() | |
1490 | method to the target vector and then use | |
1491 | that. remote.c could implement that method | |
1492 | using the ``qCRC'' packet. */ | |
1493 | char *check = xmalloc (len); | |
1494 | struct cleanup *verify_cleanups = | |
1495 | make_cleanup (xfree, check); | |
1496 | ||
1497 | if (target_read_memory (lma, check, len) != 0) | |
1498 | error ("Download verify read failed at 0x%s", | |
1499 | paddr (lma)); | |
1500 | if (memcmp (buffer, check, len) != 0) | |
1501 | error ("Download verify compare failed at 0x%s", | |
1502 | paddr (lma)); | |
1503 | do_cleanups (verify_cleanups); | |
1504 | } | |
1505 | args->data_count += len; | |
1506 | lma += len; | |
1507 | buffer += len; | |
1508 | args->write_count += 1; | |
1509 | sent += len; | |
1510 | if (quit_flag | |
1511 | || (ui_load_progress_hook != NULL | |
1512 | && ui_load_progress_hook (sect_name, sent))) | |
1513 | error ("Canceled the download"); | |
1514 | ||
1515 | if (show_load_progress != NULL) | |
1516 | show_load_progress (sect_name, sent, size, | |
1517 | args->data_count, args->total_size); | |
1518 | } | |
1519 | while (sent < size); | |
1520 | ||
1521 | if (err != 0) | |
1522 | error ("Memory access error while loading section %s.", sect_name); | |
1523 | ||
1524 | do_cleanups (old_chain); | |
1525 | } | |
1526 | } | |
1527 | } | |
1528 | ||
c906108c | 1529 | void |
917317f4 | 1530 | generic_load (char *args, int from_tty) |
c906108c | 1531 | { |
c906108c SS |
1532 | asection *s; |
1533 | bfd *loadfile_bfd; | |
1534 | time_t start_time, end_time; /* Start and end times of download */ | |
917317f4 JM |
1535 | char *filename; |
1536 | struct cleanup *old_cleanups; | |
1537 | char *offptr; | |
e4f9b4d5 MS |
1538 | struct load_section_data cbdata; |
1539 | CORE_ADDR entry; | |
1540 | ||
1541 | cbdata.load_offset = 0; /* Offset to add to vma for each section. */ | |
1542 | cbdata.write_count = 0; /* Number of writes needed. */ | |
1543 | cbdata.data_count = 0; /* Number of bytes written to target memory. */ | |
1544 | cbdata.total_size = 0; /* Total size of all bfd sectors. */ | |
917317f4 JM |
1545 | |
1546 | /* Parse the input argument - the user can specify a load offset as | |
1547 | a second argument. */ | |
1548 | filename = xmalloc (strlen (args) + 1); | |
b8c9b27d | 1549 | old_cleanups = make_cleanup (xfree, filename); |
917317f4 JM |
1550 | strcpy (filename, args); |
1551 | offptr = strchr (filename, ' '); | |
1552 | if (offptr != NULL) | |
1553 | { | |
1554 | char *endptr; | |
ba5f2f8a | 1555 | |
e4f9b4d5 | 1556 | cbdata.load_offset = strtoul (offptr, &endptr, 0); |
917317f4 JM |
1557 | if (offptr == endptr) |
1558 | error ("Invalid download offset:%s\n", offptr); | |
1559 | *offptr = '\0'; | |
1560 | } | |
c906108c | 1561 | else |
e4f9b4d5 | 1562 | cbdata.load_offset = 0; |
c906108c | 1563 | |
917317f4 | 1564 | /* Open the file for loading. */ |
c906108c SS |
1565 | loadfile_bfd = bfd_openr (filename, gnutarget); |
1566 | if (loadfile_bfd == NULL) | |
1567 | { | |
1568 | perror_with_name (filename); | |
1569 | return; | |
1570 | } | |
917317f4 | 1571 | |
c906108c SS |
1572 | /* FIXME: should be checking for errors from bfd_close (for one thing, |
1573 | on error it does not free all the storage associated with the | |
1574 | bfd). */ | |
5c65bbb6 | 1575 | make_cleanup_bfd_close (loadfile_bfd); |
c906108c | 1576 | |
c5aa993b | 1577 | if (!bfd_check_format (loadfile_bfd, bfd_object)) |
c906108c SS |
1578 | { |
1579 | error ("\"%s\" is not an object file: %s", filename, | |
1580 | bfd_errmsg (bfd_get_error ())); | |
1581 | } | |
c5aa993b | 1582 | |
e4f9b4d5 MS |
1583 | bfd_map_over_sections (loadfile_bfd, add_section_size_callback, |
1584 | (void *) &cbdata.total_size); | |
c2d11a7d | 1585 | |
c906108c SS |
1586 | start_time = time (NULL); |
1587 | ||
e4f9b4d5 | 1588 | bfd_map_over_sections (loadfile_bfd, load_section_callback, &cbdata); |
c906108c SS |
1589 | |
1590 | end_time = time (NULL); | |
ba5f2f8a | 1591 | |
e4f9b4d5 | 1592 | entry = bfd_get_start_address (loadfile_bfd); |
e4f9b4d5 MS |
1593 | ui_out_text (uiout, "Start address "); |
1594 | ui_out_field_fmt (uiout, "address", "0x%s", paddr_nz (entry)); | |
1595 | ui_out_text (uiout, ", load size "); | |
1596 | ui_out_field_fmt (uiout, "load-size", "%lu", cbdata.data_count); | |
1597 | ui_out_text (uiout, "\n"); | |
e4f9b4d5 MS |
1598 | /* We were doing this in remote-mips.c, I suspect it is right |
1599 | for other targets too. */ | |
1600 | write_pc (entry); | |
c906108c | 1601 | |
7ca9f392 AC |
1602 | /* FIXME: are we supposed to call symbol_file_add or not? According |
1603 | to a comment from remote-mips.c (where a call to symbol_file_add | |
1604 | was commented out), making the call confuses GDB if more than one | |
1605 | file is loaded in. Some targets do (e.g., remote-vx.c) but | |
1606 | others don't (or didn't - perhaphs they have all been deleted). */ | |
c906108c | 1607 | |
e4f9b4d5 MS |
1608 | print_transfer_performance (gdb_stdout, cbdata.data_count, |
1609 | cbdata.write_count, end_time - start_time); | |
c906108c SS |
1610 | |
1611 | do_cleanups (old_cleanups); | |
1612 | } | |
1613 | ||
1614 | /* Report how fast the transfer went. */ | |
1615 | ||
917317f4 JM |
1616 | /* DEPRECATED: cagney/1999-10-18: report_transfer_performance is being |
1617 | replaced by print_transfer_performance (with a very different | |
1618 | function signature). */ | |
1619 | ||
c906108c | 1620 | void |
fba45db2 KB |
1621 | report_transfer_performance (unsigned long data_count, time_t start_time, |
1622 | time_t end_time) | |
c906108c | 1623 | { |
ba5f2f8a MS |
1624 | print_transfer_performance (gdb_stdout, data_count, |
1625 | end_time - start_time, 0); | |
917317f4 JM |
1626 | } |
1627 | ||
1628 | void | |
d9fcf2fb | 1629 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
1630 | unsigned long data_count, |
1631 | unsigned long write_count, | |
1632 | unsigned long time_count) | |
1633 | { | |
8b93c638 JM |
1634 | ui_out_text (uiout, "Transfer rate: "); |
1635 | if (time_count > 0) | |
1636 | { | |
ba5f2f8a | 1637 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", |
8b93c638 JM |
1638 | (data_count * 8) / time_count); |
1639 | ui_out_text (uiout, " bits/sec"); | |
1640 | } | |
1641 | else | |
1642 | { | |
ba5f2f8a | 1643 | ui_out_field_fmt (uiout, "transferred-bits", "%lu", (data_count * 8)); |
8b93c638 JM |
1644 | ui_out_text (uiout, " bits in <1 sec"); |
1645 | } | |
1646 | if (write_count > 0) | |
1647 | { | |
1648 | ui_out_text (uiout, ", "); | |
ba5f2f8a | 1649 | ui_out_field_fmt (uiout, "write-rate", "%lu", data_count / write_count); |
8b93c638 JM |
1650 | ui_out_text (uiout, " bytes/write"); |
1651 | } | |
1652 | ui_out_text (uiout, ".\n"); | |
c906108c SS |
1653 | } |
1654 | ||
1655 | /* This function allows the addition of incrementally linked object files. | |
1656 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
1657 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
1658 | special case syntax for the rombug target (Rombug is the boot | |
1659 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
1660 | rombug case, the user doesn't need to supply a text address, | |
1661 | instead a call to target_link() (in target.c) would supply the | |
1662 | value to use. We are now discontinuing this type of ad hoc syntax. */ | |
c906108c SS |
1663 | |
1664 | /* ARGSUSED */ | |
1665 | static void | |
fba45db2 | 1666 | add_symbol_file_command (char *args, int from_tty) |
c906108c | 1667 | { |
db162d44 | 1668 | char *filename = NULL; |
2df3850c | 1669 | int flags = OBJF_USERLOADED; |
c906108c | 1670 | char *arg; |
2acceee2 | 1671 | int expecting_option = 0; |
db162d44 | 1672 | int section_index = 0; |
2acceee2 JM |
1673 | int argcnt = 0; |
1674 | int sec_num = 0; | |
1675 | int i; | |
db162d44 EZ |
1676 | int expecting_sec_name = 0; |
1677 | int expecting_sec_addr = 0; | |
1678 | ||
a39a16c4 | 1679 | struct sect_opt |
2acceee2 | 1680 | { |
2acceee2 JM |
1681 | char *name; |
1682 | char *value; | |
a39a16c4 | 1683 | }; |
db162d44 | 1684 | |
a39a16c4 MM |
1685 | struct section_addr_info *section_addrs; |
1686 | struct sect_opt *sect_opts = NULL; | |
1687 | size_t num_sect_opts = 0; | |
3017564a | 1688 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); |
c5aa993b | 1689 | |
a39a16c4 MM |
1690 | num_sect_opts = 16; |
1691 | sect_opts = (struct sect_opt *) xmalloc (num_sect_opts | |
1692 | * sizeof (struct sect_opt)); | |
1693 | ||
c906108c SS |
1694 | dont_repeat (); |
1695 | ||
1696 | if (args == NULL) | |
db162d44 | 1697 | error ("add-symbol-file takes a file name and an address"); |
c906108c SS |
1698 | |
1699 | /* Make a copy of the string that we can safely write into. */ | |
c2d11a7d | 1700 | args = xstrdup (args); |
c906108c | 1701 | |
2acceee2 | 1702 | while (*args != '\000') |
c906108c | 1703 | { |
db162d44 | 1704 | /* Any leading spaces? */ |
c5aa993b | 1705 | while (isspace (*args)) |
db162d44 EZ |
1706 | args++; |
1707 | ||
1708 | /* Point arg to the beginning of the argument. */ | |
c906108c | 1709 | arg = args; |
db162d44 EZ |
1710 | |
1711 | /* Move args pointer over the argument. */ | |
c5aa993b | 1712 | while ((*args != '\000') && !isspace (*args)) |
db162d44 EZ |
1713 | args++; |
1714 | ||
1715 | /* If there are more arguments, terminate arg and | |
1716 | proceed past it. */ | |
c906108c | 1717 | if (*args != '\000') |
db162d44 EZ |
1718 | *args++ = '\000'; |
1719 | ||
1720 | /* Now process the argument. */ | |
1721 | if (argcnt == 0) | |
c906108c | 1722 | { |
db162d44 EZ |
1723 | /* The first argument is the file name. */ |
1724 | filename = tilde_expand (arg); | |
3017564a | 1725 | make_cleanup (xfree, filename); |
c906108c | 1726 | } |
db162d44 | 1727 | else |
7a78ae4e ND |
1728 | if (argcnt == 1) |
1729 | { | |
1730 | /* The second argument is always the text address at which | |
1731 | to load the program. */ | |
1732 | sect_opts[section_index].name = ".text"; | |
1733 | sect_opts[section_index].value = arg; | |
a39a16c4 MM |
1734 | if (++section_index > num_sect_opts) |
1735 | { | |
1736 | num_sect_opts *= 2; | |
1737 | sect_opts = ((struct sect_opt *) | |
1738 | xrealloc (sect_opts, | |
1739 | num_sect_opts | |
1740 | * sizeof (struct sect_opt))); | |
1741 | } | |
7a78ae4e ND |
1742 | } |
1743 | else | |
1744 | { | |
1745 | /* It's an option (starting with '-') or it's an argument | |
1746 | to an option */ | |
1747 | ||
1748 | if (*arg == '-') | |
1749 | { | |
1750 | if (strcmp (arg, "-mapped") == 0) | |
1751 | flags |= OBJF_MAPPED; | |
1752 | else | |
1753 | if (strcmp (arg, "-readnow") == 0) | |
1754 | flags |= OBJF_READNOW; | |
1755 | else | |
1756 | if (strcmp (arg, "-s") == 0) | |
1757 | { | |
7a78ae4e ND |
1758 | expecting_sec_name = 1; |
1759 | expecting_sec_addr = 1; | |
1760 | } | |
1761 | } | |
1762 | else | |
1763 | { | |
1764 | if (expecting_sec_name) | |
db162d44 | 1765 | { |
7a78ae4e ND |
1766 | sect_opts[section_index].name = arg; |
1767 | expecting_sec_name = 0; | |
db162d44 EZ |
1768 | } |
1769 | else | |
7a78ae4e ND |
1770 | if (expecting_sec_addr) |
1771 | { | |
1772 | sect_opts[section_index].value = arg; | |
1773 | expecting_sec_addr = 0; | |
a39a16c4 MM |
1774 | if (++section_index > num_sect_opts) |
1775 | { | |
1776 | num_sect_opts *= 2; | |
1777 | sect_opts = ((struct sect_opt *) | |
1778 | xrealloc (sect_opts, | |
1779 | num_sect_opts | |
1780 | * sizeof (struct sect_opt))); | |
1781 | } | |
7a78ae4e ND |
1782 | } |
1783 | else | |
1784 | error ("USAGE: add-symbol-file <filename> <textaddress> [-mapped] [-readnow] [-s <secname> <addr>]*"); | |
1785 | } | |
1786 | } | |
db162d44 | 1787 | argcnt++; |
c906108c | 1788 | } |
c906108c | 1789 | |
db162d44 EZ |
1790 | /* Print the prompt for the query below. And save the arguments into |
1791 | a sect_addr_info structure to be passed around to other | |
1792 | functions. We have to split this up into separate print | |
1793 | statements because local_hex_string returns a local static | |
1794 | string. */ | |
2acceee2 | 1795 | |
db162d44 | 1796 | printf_filtered ("add symbol table from file \"%s\" at\n", filename); |
a39a16c4 MM |
1797 | section_addrs = alloc_section_addr_info (section_index); |
1798 | make_cleanup (xfree, section_addrs); | |
db162d44 | 1799 | for (i = 0; i < section_index; i++) |
c906108c | 1800 | { |
db162d44 EZ |
1801 | CORE_ADDR addr; |
1802 | char *val = sect_opts[i].value; | |
1803 | char *sec = sect_opts[i].name; | |
1804 | ||
ae822768 | 1805 | addr = parse_and_eval_address (val); |
db162d44 | 1806 | |
db162d44 EZ |
1807 | /* Here we store the section offsets in the order they were |
1808 | entered on the command line. */ | |
a39a16c4 MM |
1809 | section_addrs->other[sec_num].name = sec; |
1810 | section_addrs->other[sec_num].addr = addr; | |
db162d44 EZ |
1811 | printf_filtered ("\t%s_addr = %s\n", |
1812 | sec, | |
1813 | local_hex_string ((unsigned long)addr)); | |
1814 | sec_num++; | |
1815 | ||
1816 | /* The object's sections are initialized when a | |
1817 | call is made to build_objfile_section_table (objfile). | |
1818 | This happens in reread_symbols. | |
1819 | At this point, we don't know what file type this is, | |
1820 | so we can't determine what section names are valid. */ | |
2acceee2 | 1821 | } |
db162d44 | 1822 | |
2acceee2 | 1823 | if (from_tty && (!query ("%s", ""))) |
c906108c SS |
1824 | error ("Not confirmed."); |
1825 | ||
a39a16c4 | 1826 | symbol_file_add (filename, from_tty, section_addrs, 0, flags); |
c906108c SS |
1827 | |
1828 | /* Getting new symbols may change our opinion about what is | |
1829 | frameless. */ | |
1830 | reinit_frame_cache (); | |
db162d44 | 1831 | do_cleanups (my_cleanups); |
c906108c SS |
1832 | } |
1833 | \f | |
1834 | static void | |
fba45db2 | 1835 | add_shared_symbol_files_command (char *args, int from_tty) |
c906108c SS |
1836 | { |
1837 | #ifdef ADD_SHARED_SYMBOL_FILES | |
1838 | ADD_SHARED_SYMBOL_FILES (args, from_tty); | |
1839 | #else | |
1840 | error ("This command is not available in this configuration of GDB."); | |
c5aa993b | 1841 | #endif |
c906108c SS |
1842 | } |
1843 | \f | |
1844 | /* Re-read symbols if a symbol-file has changed. */ | |
1845 | void | |
fba45db2 | 1846 | reread_symbols (void) |
c906108c SS |
1847 | { |
1848 | struct objfile *objfile; | |
1849 | long new_modtime; | |
1850 | int reread_one = 0; | |
1851 | struct stat new_statbuf; | |
1852 | int res; | |
1853 | ||
1854 | /* With the addition of shared libraries, this should be modified, | |
1855 | the load time should be saved in the partial symbol tables, since | |
1856 | different tables may come from different source files. FIXME. | |
1857 | This routine should then walk down each partial symbol table | |
1858 | and see if the symbol table that it originates from has been changed */ | |
1859 | ||
c5aa993b JM |
1860 | for (objfile = object_files; objfile; objfile = objfile->next) |
1861 | { | |
1862 | if (objfile->obfd) | |
1863 | { | |
52d16ba8 | 1864 | #ifdef DEPRECATED_IBM6000_TARGET |
c5aa993b JM |
1865 | /* If this object is from a shared library, then you should |
1866 | stat on the library name, not member name. */ | |
c906108c | 1867 | |
c5aa993b JM |
1868 | if (objfile->obfd->my_archive) |
1869 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
1870 | else | |
c906108c | 1871 | #endif |
c5aa993b JM |
1872 | res = stat (objfile->name, &new_statbuf); |
1873 | if (res != 0) | |
c906108c | 1874 | { |
c5aa993b JM |
1875 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
1876 | printf_filtered ("`%s' has disappeared; keeping its symbols.\n", | |
1877 | objfile->name); | |
1878 | continue; | |
c906108c | 1879 | } |
c5aa993b JM |
1880 | new_modtime = new_statbuf.st_mtime; |
1881 | if (new_modtime != objfile->mtime) | |
c906108c | 1882 | { |
c5aa993b JM |
1883 | struct cleanup *old_cleanups; |
1884 | struct section_offsets *offsets; | |
1885 | int num_offsets; | |
c5aa993b JM |
1886 | char *obfd_filename; |
1887 | ||
1888 | printf_filtered ("`%s' has changed; re-reading symbols.\n", | |
1889 | objfile->name); | |
1890 | ||
1891 | /* There are various functions like symbol_file_add, | |
1892 | symfile_bfd_open, syms_from_objfile, etc., which might | |
1893 | appear to do what we want. But they have various other | |
1894 | effects which we *don't* want. So we just do stuff | |
1895 | ourselves. We don't worry about mapped files (for one thing, | |
1896 | any mapped file will be out of date). */ | |
1897 | ||
1898 | /* If we get an error, blow away this objfile (not sure if | |
1899 | that is the correct response for things like shared | |
1900 | libraries). */ | |
74b7792f | 1901 | old_cleanups = make_cleanup_free_objfile (objfile); |
c5aa993b | 1902 | /* We need to do this whenever any symbols go away. */ |
74b7792f | 1903 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c5aa993b JM |
1904 | |
1905 | /* Clean up any state BFD has sitting around. We don't need | |
1906 | to close the descriptor but BFD lacks a way of closing the | |
1907 | BFD without closing the descriptor. */ | |
1908 | obfd_filename = bfd_get_filename (objfile->obfd); | |
1909 | if (!bfd_close (objfile->obfd)) | |
1910 | error ("Can't close BFD for %s: %s", objfile->name, | |
1911 | bfd_errmsg (bfd_get_error ())); | |
1912 | objfile->obfd = bfd_openr (obfd_filename, gnutarget); | |
1913 | if (objfile->obfd == NULL) | |
1914 | error ("Can't open %s to read symbols.", objfile->name); | |
1915 | /* bfd_openr sets cacheable to true, which is what we want. */ | |
1916 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
1917 | error ("Can't read symbols from %s: %s.", objfile->name, | |
1918 | bfd_errmsg (bfd_get_error ())); | |
1919 | ||
1920 | /* Save the offsets, we will nuke them with the rest of the | |
1921 | psymbol_obstack. */ | |
1922 | num_offsets = objfile->num_sections; | |
a39a16c4 MM |
1923 | offsets = ((struct section_offsets *) |
1924 | alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))); | |
1925 | memcpy (offsets, objfile->section_offsets, | |
1926 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
c5aa993b JM |
1927 | |
1928 | /* Nuke all the state that we will re-read. Much of the following | |
1929 | code which sets things to NULL really is necessary to tell | |
1930 | other parts of GDB that there is nothing currently there. */ | |
1931 | ||
1932 | /* FIXME: Do we have to free a whole linked list, or is this | |
1933 | enough? */ | |
1934 | if (objfile->global_psymbols.list) | |
aac7f4ea | 1935 | xmfree (objfile->md, objfile->global_psymbols.list); |
c5aa993b JM |
1936 | memset (&objfile->global_psymbols, 0, |
1937 | sizeof (objfile->global_psymbols)); | |
1938 | if (objfile->static_psymbols.list) | |
aac7f4ea | 1939 | xmfree (objfile->md, objfile->static_psymbols.list); |
c5aa993b JM |
1940 | memset (&objfile->static_psymbols, 0, |
1941 | sizeof (objfile->static_psymbols)); | |
1942 | ||
1943 | /* Free the obstacks for non-reusable objfiles */ | |
af5f3db6 AC |
1944 | bcache_xfree (objfile->psymbol_cache); |
1945 | objfile->psymbol_cache = bcache_xmalloc (); | |
1946 | bcache_xfree (objfile->macro_cache); | |
1947 | objfile->macro_cache = bcache_xmalloc (); | |
2de7ced7 DJ |
1948 | if (objfile->demangled_names_hash != NULL) |
1949 | { | |
1950 | htab_delete (objfile->demangled_names_hash); | |
1951 | objfile->demangled_names_hash = NULL; | |
1952 | } | |
c5aa993b JM |
1953 | obstack_free (&objfile->psymbol_obstack, 0); |
1954 | obstack_free (&objfile->symbol_obstack, 0); | |
1955 | obstack_free (&objfile->type_obstack, 0); | |
1956 | objfile->sections = NULL; | |
1957 | objfile->symtabs = NULL; | |
1958 | objfile->psymtabs = NULL; | |
1959 | objfile->free_psymtabs = NULL; | |
1960 | objfile->msymbols = NULL; | |
29239a8f | 1961 | objfile->sym_private = NULL; |
c5aa993b | 1962 | objfile->minimal_symbol_count = 0; |
0a83117a MS |
1963 | memset (&objfile->msymbol_hash, 0, |
1964 | sizeof (objfile->msymbol_hash)); | |
1965 | memset (&objfile->msymbol_demangled_hash, 0, | |
1966 | sizeof (objfile->msymbol_demangled_hash)); | |
c5aa993b JM |
1967 | objfile->fundamental_types = NULL; |
1968 | if (objfile->sf != NULL) | |
1969 | { | |
1970 | (*objfile->sf->sym_finish) (objfile); | |
1971 | } | |
1972 | ||
1973 | /* We never make this a mapped file. */ | |
1974 | objfile->md = NULL; | |
1975 | /* obstack_specify_allocation also initializes the obstack so | |
1976 | it is empty. */ | |
af5f3db6 AC |
1977 | objfile->psymbol_cache = bcache_xmalloc (); |
1978 | objfile->macro_cache = bcache_xmalloc (); | |
c5aa993b | 1979 | obstack_specify_allocation (&objfile->psymbol_obstack, 0, 0, |
b8c9b27d | 1980 | xmalloc, xfree); |
c5aa993b | 1981 | obstack_specify_allocation (&objfile->symbol_obstack, 0, 0, |
b8c9b27d | 1982 | xmalloc, xfree); |
c5aa993b | 1983 | obstack_specify_allocation (&objfile->type_obstack, 0, 0, |
b8c9b27d | 1984 | xmalloc, xfree); |
c5aa993b JM |
1985 | if (build_objfile_section_table (objfile)) |
1986 | { | |
1987 | error ("Can't find the file sections in `%s': %s", | |
1988 | objfile->name, bfd_errmsg (bfd_get_error ())); | |
1989 | } | |
15831452 | 1990 | terminate_minimal_symbol_table (objfile); |
c5aa993b JM |
1991 | |
1992 | /* We use the same section offsets as from last time. I'm not | |
1993 | sure whether that is always correct for shared libraries. */ | |
1994 | objfile->section_offsets = (struct section_offsets *) | |
a39a16c4 MM |
1995 | obstack_alloc (&objfile->psymbol_obstack, |
1996 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
1997 | memcpy (objfile->section_offsets, offsets, | |
1998 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
c5aa993b JM |
1999 | objfile->num_sections = num_offsets; |
2000 | ||
2001 | /* What the hell is sym_new_init for, anyway? The concept of | |
2002 | distinguishing between the main file and additional files | |
2003 | in this way seems rather dubious. */ | |
2004 | if (objfile == symfile_objfile) | |
2005 | { | |
2006 | (*objfile->sf->sym_new_init) (objfile); | |
c906108c | 2007 | #ifdef HPUXHPPA |
c5aa993b | 2008 | RESET_HP_UX_GLOBALS (); |
c906108c | 2009 | #endif |
c5aa993b JM |
2010 | } |
2011 | ||
2012 | (*objfile->sf->sym_init) (objfile); | |
b9caf505 | 2013 | clear_complaints (&symfile_complaints, 1, 1); |
c5aa993b JM |
2014 | /* The "mainline" parameter is a hideous hack; I think leaving it |
2015 | zero is OK since dbxread.c also does what it needs to do if | |
2016 | objfile->global_psymbols.size is 0. */ | |
96baa820 | 2017 | (*objfile->sf->sym_read) (objfile, 0); |
c5aa993b JM |
2018 | if (!have_partial_symbols () && !have_full_symbols ()) |
2019 | { | |
2020 | wrap_here (""); | |
2021 | printf_filtered ("(no debugging symbols found)\n"); | |
2022 | wrap_here (""); | |
2023 | } | |
2024 | objfile->flags |= OBJF_SYMS; | |
2025 | ||
2026 | /* We're done reading the symbol file; finish off complaints. */ | |
b9caf505 | 2027 | clear_complaints (&symfile_complaints, 0, 1); |
c906108c | 2028 | |
c5aa993b JM |
2029 | /* Getting new symbols may change our opinion about what is |
2030 | frameless. */ | |
c906108c | 2031 | |
c5aa993b | 2032 | reinit_frame_cache (); |
c906108c | 2033 | |
c5aa993b JM |
2034 | /* Discard cleanups as symbol reading was successful. */ |
2035 | discard_cleanups (old_cleanups); | |
c906108c | 2036 | |
c5aa993b JM |
2037 | /* If the mtime has changed between the time we set new_modtime |
2038 | and now, we *want* this to be out of date, so don't call stat | |
2039 | again now. */ | |
2040 | objfile->mtime = new_modtime; | |
2041 | reread_one = 1; | |
5b5d99cf | 2042 | reread_separate_symbols (objfile); |
c5aa993b | 2043 | } |
c906108c SS |
2044 | } |
2045 | } | |
c906108c SS |
2046 | |
2047 | if (reread_one) | |
2048 | clear_symtab_users (); | |
2049 | } | |
5b5d99cf JB |
2050 | |
2051 | ||
2052 | /* Handle separate debug info for OBJFILE, which has just been | |
2053 | re-read: | |
2054 | - If we had separate debug info before, but now we don't, get rid | |
2055 | of the separated objfile. | |
2056 | - If we didn't have separated debug info before, but now we do, | |
2057 | read in the new separated debug info file. | |
2058 | - If the debug link points to a different file, toss the old one | |
2059 | and read the new one. | |
2060 | This function does *not* handle the case where objfile is still | |
2061 | using the same separate debug info file, but that file's timestamp | |
2062 | has changed. That case should be handled by the loop in | |
2063 | reread_symbols already. */ | |
2064 | static void | |
2065 | reread_separate_symbols (struct objfile *objfile) | |
2066 | { | |
2067 | char *debug_file; | |
2068 | unsigned long crc32; | |
2069 | ||
2070 | /* Does the updated objfile's debug info live in a | |
2071 | separate file? */ | |
2072 | debug_file = find_separate_debug_file (objfile); | |
2073 | ||
2074 | if (objfile->separate_debug_objfile) | |
2075 | { | |
2076 | /* There are two cases where we need to get rid of | |
2077 | the old separated debug info objfile: | |
2078 | - if the new primary objfile doesn't have | |
2079 | separated debug info, or | |
2080 | - if the new primary objfile has separate debug | |
2081 | info, but it's under a different filename. | |
2082 | ||
2083 | If the old and new objfiles both have separate | |
2084 | debug info, under the same filename, then we're | |
2085 | okay --- if the separated file's contents have | |
2086 | changed, we will have caught that when we | |
2087 | visited it in this function's outermost | |
2088 | loop. */ | |
2089 | if (! debug_file | |
2090 | || strcmp (debug_file, objfile->separate_debug_objfile->name) != 0) | |
2091 | free_objfile (objfile->separate_debug_objfile); | |
2092 | } | |
2093 | ||
2094 | /* If the new objfile has separate debug info, and we | |
2095 | haven't loaded it already, do so now. */ | |
2096 | if (debug_file | |
2097 | && ! objfile->separate_debug_objfile) | |
2098 | { | |
2099 | /* Use the same section offset table as objfile itself. | |
2100 | Preserve the flags from objfile that make sense. */ | |
2101 | objfile->separate_debug_objfile | |
2102 | = (symbol_file_add_with_addrs_or_offsets | |
2103 | (debug_file, | |
2104 | info_verbose, /* from_tty: Don't override the default. */ | |
2105 | 0, /* No addr table. */ | |
2106 | objfile->section_offsets, objfile->num_sections, | |
2107 | 0, /* Not mainline. See comments about this above. */ | |
2108 | objfile->flags & (OBJF_MAPPED | OBJF_REORDERED | |
2109 | | OBJF_SHARED | OBJF_READNOW | |
2110 | | OBJF_USERLOADED))); | |
2111 | objfile->separate_debug_objfile->separate_debug_objfile_backlink | |
2112 | = objfile; | |
2113 | } | |
2114 | } | |
2115 | ||
2116 | ||
c906108c SS |
2117 | \f |
2118 | ||
c5aa993b JM |
2119 | |
2120 | typedef struct | |
2121 | { | |
2122 | char *ext; | |
c906108c | 2123 | enum language lang; |
c5aa993b JM |
2124 | } |
2125 | filename_language; | |
c906108c | 2126 | |
c5aa993b | 2127 | static filename_language *filename_language_table; |
c906108c SS |
2128 | static int fl_table_size, fl_table_next; |
2129 | ||
2130 | static void | |
fba45db2 | 2131 | add_filename_language (char *ext, enum language lang) |
c906108c SS |
2132 | { |
2133 | if (fl_table_next >= fl_table_size) | |
2134 | { | |
2135 | fl_table_size += 10; | |
25bf3106 PM |
2136 | filename_language_table = |
2137 | xrealloc (filename_language_table, | |
2138 | fl_table_size * sizeof (*filename_language_table)); | |
c906108c SS |
2139 | } |
2140 | ||
4fcf66da | 2141 | filename_language_table[fl_table_next].ext = xstrdup (ext); |
c906108c SS |
2142 | filename_language_table[fl_table_next].lang = lang; |
2143 | fl_table_next++; | |
2144 | } | |
2145 | ||
2146 | static char *ext_args; | |
2147 | ||
2148 | static void | |
fba45db2 | 2149 | set_ext_lang_command (char *args, int from_tty) |
c906108c SS |
2150 | { |
2151 | int i; | |
2152 | char *cp = ext_args; | |
2153 | enum language lang; | |
2154 | ||
2155 | /* First arg is filename extension, starting with '.' */ | |
2156 | if (*cp != '.') | |
2157 | error ("'%s': Filename extension must begin with '.'", ext_args); | |
2158 | ||
2159 | /* Find end of first arg. */ | |
c5aa993b | 2160 | while (*cp && !isspace (*cp)) |
c906108c SS |
2161 | cp++; |
2162 | ||
2163 | if (*cp == '\0') | |
2164 | error ("'%s': two arguments required -- filename extension and language", | |
2165 | ext_args); | |
2166 | ||
2167 | /* Null-terminate first arg */ | |
c5aa993b | 2168 | *cp++ = '\0'; |
c906108c SS |
2169 | |
2170 | /* Find beginning of second arg, which should be a source language. */ | |
2171 | while (*cp && isspace (*cp)) | |
2172 | cp++; | |
2173 | ||
2174 | if (*cp == '\0') | |
2175 | error ("'%s': two arguments required -- filename extension and language", | |
2176 | ext_args); | |
2177 | ||
2178 | /* Lookup the language from among those we know. */ | |
2179 | lang = language_enum (cp); | |
2180 | ||
2181 | /* Now lookup the filename extension: do we already know it? */ | |
2182 | for (i = 0; i < fl_table_next; i++) | |
2183 | if (0 == strcmp (ext_args, filename_language_table[i].ext)) | |
2184 | break; | |
2185 | ||
2186 | if (i >= fl_table_next) | |
2187 | { | |
2188 | /* new file extension */ | |
2189 | add_filename_language (ext_args, lang); | |
2190 | } | |
2191 | else | |
2192 | { | |
2193 | /* redefining a previously known filename extension */ | |
2194 | ||
2195 | /* if (from_tty) */ | |
2196 | /* query ("Really make files of type %s '%s'?", */ | |
2197 | /* ext_args, language_str (lang)); */ | |
2198 | ||
b8c9b27d | 2199 | xfree (filename_language_table[i].ext); |
4fcf66da | 2200 | filename_language_table[i].ext = xstrdup (ext_args); |
c906108c SS |
2201 | filename_language_table[i].lang = lang; |
2202 | } | |
2203 | } | |
2204 | ||
2205 | static void | |
fba45db2 | 2206 | info_ext_lang_command (char *args, int from_tty) |
c906108c SS |
2207 | { |
2208 | int i; | |
2209 | ||
2210 | printf_filtered ("Filename extensions and the languages they represent:"); | |
2211 | printf_filtered ("\n\n"); | |
2212 | for (i = 0; i < fl_table_next; i++) | |
c5aa993b JM |
2213 | printf_filtered ("\t%s\t- %s\n", |
2214 | filename_language_table[i].ext, | |
c906108c SS |
2215 | language_str (filename_language_table[i].lang)); |
2216 | } | |
2217 | ||
2218 | static void | |
fba45db2 | 2219 | init_filename_language_table (void) |
c906108c SS |
2220 | { |
2221 | if (fl_table_size == 0) /* protect against repetition */ | |
2222 | { | |
2223 | fl_table_size = 20; | |
2224 | fl_table_next = 0; | |
c5aa993b | 2225 | filename_language_table = |
c906108c | 2226 | xmalloc (fl_table_size * sizeof (*filename_language_table)); |
c5aa993b JM |
2227 | add_filename_language (".c", language_c); |
2228 | add_filename_language (".C", language_cplus); | |
2229 | add_filename_language (".cc", language_cplus); | |
2230 | add_filename_language (".cp", language_cplus); | |
2231 | add_filename_language (".cpp", language_cplus); | |
2232 | add_filename_language (".cxx", language_cplus); | |
2233 | add_filename_language (".c++", language_cplus); | |
2234 | add_filename_language (".java", language_java); | |
c906108c | 2235 | add_filename_language (".class", language_java); |
da2cf7e0 | 2236 | add_filename_language (".m", language_objc); |
c5aa993b JM |
2237 | add_filename_language (".f", language_fortran); |
2238 | add_filename_language (".F", language_fortran); | |
2239 | add_filename_language (".s", language_asm); | |
2240 | add_filename_language (".S", language_asm); | |
c6fd39cd PM |
2241 | add_filename_language (".pas", language_pascal); |
2242 | add_filename_language (".p", language_pascal); | |
2243 | add_filename_language (".pp", language_pascal); | |
c906108c SS |
2244 | } |
2245 | } | |
2246 | ||
2247 | enum language | |
fba45db2 | 2248 | deduce_language_from_filename (char *filename) |
c906108c SS |
2249 | { |
2250 | int i; | |
2251 | char *cp; | |
2252 | ||
2253 | if (filename != NULL) | |
2254 | if ((cp = strrchr (filename, '.')) != NULL) | |
2255 | for (i = 0; i < fl_table_next; i++) | |
2256 | if (strcmp (cp, filename_language_table[i].ext) == 0) | |
2257 | return filename_language_table[i].lang; | |
2258 | ||
2259 | return language_unknown; | |
2260 | } | |
2261 | \f | |
2262 | /* allocate_symtab: | |
2263 | ||
2264 | Allocate and partly initialize a new symbol table. Return a pointer | |
2265 | to it. error() if no space. | |
2266 | ||
2267 | Caller must set these fields: | |
c5aa993b JM |
2268 | LINETABLE(symtab) |
2269 | symtab->blockvector | |
2270 | symtab->dirname | |
2271 | symtab->free_code | |
2272 | symtab->free_ptr | |
2273 | possibly free_named_symtabs (symtab->filename); | |
c906108c SS |
2274 | */ |
2275 | ||
2276 | struct symtab * | |
fba45db2 | 2277 | allocate_symtab (char *filename, struct objfile *objfile) |
c906108c SS |
2278 | { |
2279 | register struct symtab *symtab; | |
2280 | ||
2281 | symtab = (struct symtab *) | |
c5aa993b | 2282 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct symtab)); |
c906108c | 2283 | memset (symtab, 0, sizeof (*symtab)); |
c5aa993b JM |
2284 | symtab->filename = obsavestring (filename, strlen (filename), |
2285 | &objfile->symbol_obstack); | |
2286 | symtab->fullname = NULL; | |
2287 | symtab->language = deduce_language_from_filename (filename); | |
2288 | symtab->debugformat = obsavestring ("unknown", 7, | |
2289 | &objfile->symbol_obstack); | |
c906108c SS |
2290 | |
2291 | /* Hook it to the objfile it comes from */ | |
2292 | ||
c5aa993b JM |
2293 | symtab->objfile = objfile; |
2294 | symtab->next = objfile->symtabs; | |
2295 | objfile->symtabs = symtab; | |
c906108c SS |
2296 | |
2297 | /* FIXME: This should go away. It is only defined for the Z8000, | |
2298 | and the Z8000 definition of this macro doesn't have anything to | |
2299 | do with the now-nonexistent EXTRA_SYMTAB_INFO macro, it's just | |
2300 | here for convenience. */ | |
2301 | #ifdef INIT_EXTRA_SYMTAB_INFO | |
2302 | INIT_EXTRA_SYMTAB_INFO (symtab); | |
2303 | #endif | |
2304 | ||
2305 | return (symtab); | |
2306 | } | |
2307 | ||
2308 | struct partial_symtab * | |
fba45db2 | 2309 | allocate_psymtab (char *filename, struct objfile *objfile) |
c906108c SS |
2310 | { |
2311 | struct partial_symtab *psymtab; | |
2312 | ||
c5aa993b | 2313 | if (objfile->free_psymtabs) |
c906108c | 2314 | { |
c5aa993b JM |
2315 | psymtab = objfile->free_psymtabs; |
2316 | objfile->free_psymtabs = psymtab->next; | |
c906108c SS |
2317 | } |
2318 | else | |
2319 | psymtab = (struct partial_symtab *) | |
c5aa993b | 2320 | obstack_alloc (&objfile->psymbol_obstack, |
c906108c SS |
2321 | sizeof (struct partial_symtab)); |
2322 | ||
2323 | memset (psymtab, 0, sizeof (struct partial_symtab)); | |
c5aa993b JM |
2324 | psymtab->filename = obsavestring (filename, strlen (filename), |
2325 | &objfile->psymbol_obstack); | |
2326 | psymtab->symtab = NULL; | |
c906108c SS |
2327 | |
2328 | /* Prepend it to the psymtab list for the objfile it belongs to. | |
2329 | Psymtabs are searched in most recent inserted -> least recent | |
2330 | inserted order. */ | |
2331 | ||
c5aa993b JM |
2332 | psymtab->objfile = objfile; |
2333 | psymtab->next = objfile->psymtabs; | |
2334 | objfile->psymtabs = psymtab; | |
c906108c SS |
2335 | #if 0 |
2336 | { | |
2337 | struct partial_symtab **prev_pst; | |
c5aa993b JM |
2338 | psymtab->objfile = objfile; |
2339 | psymtab->next = NULL; | |
2340 | prev_pst = &(objfile->psymtabs); | |
c906108c | 2341 | while ((*prev_pst) != NULL) |
c5aa993b | 2342 | prev_pst = &((*prev_pst)->next); |
c906108c | 2343 | (*prev_pst) = psymtab; |
c5aa993b | 2344 | } |
c906108c | 2345 | #endif |
c5aa993b | 2346 | |
c906108c SS |
2347 | return (psymtab); |
2348 | } | |
2349 | ||
2350 | void | |
fba45db2 | 2351 | discard_psymtab (struct partial_symtab *pst) |
c906108c SS |
2352 | { |
2353 | struct partial_symtab **prev_pst; | |
2354 | ||
2355 | /* From dbxread.c: | |
2356 | Empty psymtabs happen as a result of header files which don't | |
2357 | have any symbols in them. There can be a lot of them. But this | |
2358 | check is wrong, in that a psymtab with N_SLINE entries but | |
2359 | nothing else is not empty, but we don't realize that. Fixing | |
2360 | that without slowing things down might be tricky. */ | |
2361 | ||
2362 | /* First, snip it out of the psymtab chain */ | |
2363 | ||
2364 | prev_pst = &(pst->objfile->psymtabs); | |
2365 | while ((*prev_pst) != pst) | |
2366 | prev_pst = &((*prev_pst)->next); | |
2367 | (*prev_pst) = pst->next; | |
2368 | ||
2369 | /* Next, put it on a free list for recycling */ | |
2370 | ||
2371 | pst->next = pst->objfile->free_psymtabs; | |
2372 | pst->objfile->free_psymtabs = pst; | |
2373 | } | |
c906108c | 2374 | \f |
c5aa993b | 2375 | |
c906108c SS |
2376 | /* Reset all data structures in gdb which may contain references to symbol |
2377 | table data. */ | |
2378 | ||
2379 | void | |
fba45db2 | 2380 | clear_symtab_users (void) |
c906108c SS |
2381 | { |
2382 | /* Someday, we should do better than this, by only blowing away | |
2383 | the things that really need to be blown. */ | |
2384 | clear_value_history (); | |
2385 | clear_displays (); | |
2386 | clear_internalvars (); | |
2387 | breakpoint_re_set (); | |
2388 | set_default_breakpoint (0, 0, 0, 0); | |
0378c332 | 2389 | clear_current_source_symtab_and_line (); |
c906108c | 2390 | clear_pc_function_cache (); |
11cf8741 JM |
2391 | if (target_new_objfile_hook) |
2392 | target_new_objfile_hook (NULL); | |
c906108c SS |
2393 | } |
2394 | ||
74b7792f AC |
2395 | static void |
2396 | clear_symtab_users_cleanup (void *ignore) | |
2397 | { | |
2398 | clear_symtab_users (); | |
2399 | } | |
2400 | ||
c906108c SS |
2401 | /* clear_symtab_users_once: |
2402 | ||
2403 | This function is run after symbol reading, or from a cleanup. | |
2404 | If an old symbol table was obsoleted, the old symbol table | |
2405 | has been blown away, but the other GDB data structures that may | |
2406 | reference it have not yet been cleared or re-directed. (The old | |
2407 | symtab was zapped, and the cleanup queued, in free_named_symtab() | |
2408 | below.) | |
2409 | ||
2410 | This function can be queued N times as a cleanup, or called | |
2411 | directly; it will do all the work the first time, and then will be a | |
2412 | no-op until the next time it is queued. This works by bumping a | |
2413 | counter at queueing time. Much later when the cleanup is run, or at | |
2414 | the end of symbol processing (in case the cleanup is discarded), if | |
2415 | the queued count is greater than the "done-count", we do the work | |
2416 | and set the done-count to the queued count. If the queued count is | |
2417 | less than or equal to the done-count, we just ignore the call. This | |
2418 | is needed because reading a single .o file will often replace many | |
2419 | symtabs (one per .h file, for example), and we don't want to reset | |
2420 | the breakpoints N times in the user's face. | |
2421 | ||
2422 | The reason we both queue a cleanup, and call it directly after symbol | |
2423 | reading, is because the cleanup protects us in case of errors, but is | |
2424 | discarded if symbol reading is successful. */ | |
2425 | ||
2426 | #if 0 | |
2427 | /* FIXME: As free_named_symtabs is currently a big noop this function | |
2428 | is no longer needed. */ | |
a14ed312 | 2429 | static void clear_symtab_users_once (void); |
c906108c SS |
2430 | |
2431 | static int clear_symtab_users_queued; | |
2432 | static int clear_symtab_users_done; | |
2433 | ||
2434 | static void | |
fba45db2 | 2435 | clear_symtab_users_once (void) |
c906108c SS |
2436 | { |
2437 | /* Enforce once-per-`do_cleanups'-semantics */ | |
2438 | if (clear_symtab_users_queued <= clear_symtab_users_done) | |
2439 | return; | |
2440 | clear_symtab_users_done = clear_symtab_users_queued; | |
2441 | ||
2442 | clear_symtab_users (); | |
2443 | } | |
2444 | #endif | |
2445 | ||
2446 | /* Delete the specified psymtab, and any others that reference it. */ | |
2447 | ||
2448 | static void | |
fba45db2 | 2449 | cashier_psymtab (struct partial_symtab *pst) |
c906108c SS |
2450 | { |
2451 | struct partial_symtab *ps, *pprev = NULL; | |
2452 | int i; | |
2453 | ||
2454 | /* Find its previous psymtab in the chain */ | |
c5aa993b JM |
2455 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) |
2456 | { | |
2457 | if (ps == pst) | |
2458 | break; | |
2459 | pprev = ps; | |
2460 | } | |
c906108c | 2461 | |
c5aa993b JM |
2462 | if (ps) |
2463 | { | |
2464 | /* Unhook it from the chain. */ | |
2465 | if (ps == pst->objfile->psymtabs) | |
2466 | pst->objfile->psymtabs = ps->next; | |
2467 | else | |
2468 | pprev->next = ps->next; | |
2469 | ||
2470 | /* FIXME, we can't conveniently deallocate the entries in the | |
2471 | partial_symbol lists (global_psymbols/static_psymbols) that | |
2472 | this psymtab points to. These just take up space until all | |
2473 | the psymtabs are reclaimed. Ditto the dependencies list and | |
2474 | filename, which are all in the psymbol_obstack. */ | |
2475 | ||
2476 | /* We need to cashier any psymtab that has this one as a dependency... */ | |
2477 | again: | |
2478 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) | |
2479 | { | |
2480 | for (i = 0; i < ps->number_of_dependencies; i++) | |
2481 | { | |
2482 | if (ps->dependencies[i] == pst) | |
2483 | { | |
2484 | cashier_psymtab (ps); | |
2485 | goto again; /* Must restart, chain has been munged. */ | |
2486 | } | |
2487 | } | |
c906108c | 2488 | } |
c906108c | 2489 | } |
c906108c SS |
2490 | } |
2491 | ||
2492 | /* If a symtab or psymtab for filename NAME is found, free it along | |
2493 | with any dependent breakpoints, displays, etc. | |
2494 | Used when loading new versions of object modules with the "add-file" | |
2495 | command. This is only called on the top-level symtab or psymtab's name; | |
2496 | it is not called for subsidiary files such as .h files. | |
2497 | ||
2498 | Return value is 1 if we blew away the environment, 0 if not. | |
7e73cedf | 2499 | FIXME. The return value appears to never be used. |
c906108c SS |
2500 | |
2501 | FIXME. I think this is not the best way to do this. We should | |
2502 | work on being gentler to the environment while still cleaning up | |
2503 | all stray pointers into the freed symtab. */ | |
2504 | ||
2505 | int | |
fba45db2 | 2506 | free_named_symtabs (char *name) |
c906108c SS |
2507 | { |
2508 | #if 0 | |
2509 | /* FIXME: With the new method of each objfile having it's own | |
2510 | psymtab list, this function needs serious rethinking. In particular, | |
2511 | why was it ever necessary to toss psymtabs with specific compilation | |
2512 | unit filenames, as opposed to all psymtabs from a particular symbol | |
2513 | file? -- fnf | |
2514 | Well, the answer is that some systems permit reloading of particular | |
2515 | compilation units. We want to blow away any old info about these | |
2516 | compilation units, regardless of which objfiles they arrived in. --gnu. */ | |
2517 | ||
2518 | register struct symtab *s; | |
2519 | register struct symtab *prev; | |
2520 | register struct partial_symtab *ps; | |
2521 | struct blockvector *bv; | |
2522 | int blewit = 0; | |
2523 | ||
2524 | /* We only wack things if the symbol-reload switch is set. */ | |
2525 | if (!symbol_reloading) | |
2526 | return 0; | |
2527 | ||
2528 | /* Some symbol formats have trouble providing file names... */ | |
2529 | if (name == 0 || *name == '\0') | |
2530 | return 0; | |
2531 | ||
2532 | /* Look for a psymtab with the specified name. */ | |
2533 | ||
2534 | again2: | |
c5aa993b JM |
2535 | for (ps = partial_symtab_list; ps; ps = ps->next) |
2536 | { | |
2537 | if (STREQ (name, ps->filename)) | |
2538 | { | |
2539 | cashier_psymtab (ps); /* Blow it away...and its little dog, too. */ | |
2540 | goto again2; /* Must restart, chain has been munged */ | |
2541 | } | |
c906108c | 2542 | } |
c906108c SS |
2543 | |
2544 | /* Look for a symtab with the specified name. */ | |
2545 | ||
2546 | for (s = symtab_list; s; s = s->next) | |
2547 | { | |
2548 | if (STREQ (name, s->filename)) | |
2549 | break; | |
2550 | prev = s; | |
2551 | } | |
2552 | ||
2553 | if (s) | |
2554 | { | |
2555 | if (s == symtab_list) | |
2556 | symtab_list = s->next; | |
2557 | else | |
2558 | prev->next = s->next; | |
2559 | ||
2560 | /* For now, queue a delete for all breakpoints, displays, etc., whether | |
c5aa993b JM |
2561 | or not they depend on the symtab being freed. This should be |
2562 | changed so that only those data structures affected are deleted. */ | |
c906108c SS |
2563 | |
2564 | /* But don't delete anything if the symtab is empty. | |
c5aa993b JM |
2565 | This test is necessary due to a bug in "dbxread.c" that |
2566 | causes empty symtabs to be created for N_SO symbols that | |
2567 | contain the pathname of the object file. (This problem | |
2568 | has been fixed in GDB 3.9x). */ | |
c906108c SS |
2569 | |
2570 | bv = BLOCKVECTOR (s); | |
2571 | if (BLOCKVECTOR_NBLOCKS (bv) > 2 | |
2572 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) | |
2573 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK))) | |
2574 | { | |
b9caf505 AC |
2575 | complaint (&symfile_complaints, "Replacing old symbols for `%s'", |
2576 | name); | |
c906108c SS |
2577 | clear_symtab_users_queued++; |
2578 | make_cleanup (clear_symtab_users_once, 0); | |
2579 | blewit = 1; | |
c5aa993b JM |
2580 | } |
2581 | else | |
2582 | { | |
b9caf505 AC |
2583 | complaint (&symfile_complaints, "Empty symbol table found for `%s'", |
2584 | name); | |
c906108c SS |
2585 | } |
2586 | ||
2587 | free_symtab (s); | |
2588 | } | |
2589 | else | |
2590 | { | |
2591 | /* It is still possible that some breakpoints will be affected | |
c5aa993b JM |
2592 | even though no symtab was found, since the file might have |
2593 | been compiled without debugging, and hence not be associated | |
2594 | with a symtab. In order to handle this correctly, we would need | |
2595 | to keep a list of text address ranges for undebuggable files. | |
2596 | For now, we do nothing, since this is a fairly obscure case. */ | |
c906108c SS |
2597 | ; |
2598 | } | |
2599 | ||
2600 | /* FIXME, what about the minimal symbol table? */ | |
2601 | return blewit; | |
2602 | #else | |
2603 | return (0); | |
2604 | #endif | |
2605 | } | |
2606 | \f | |
2607 | /* Allocate and partially fill a partial symtab. It will be | |
2608 | completely filled at the end of the symbol list. | |
2609 | ||
d4f3574e | 2610 | FILENAME is the name of the symbol-file we are reading from. */ |
c906108c SS |
2611 | |
2612 | struct partial_symtab * | |
fba45db2 KB |
2613 | start_psymtab_common (struct objfile *objfile, |
2614 | struct section_offsets *section_offsets, char *filename, | |
2615 | CORE_ADDR textlow, struct partial_symbol **global_syms, | |
2616 | struct partial_symbol **static_syms) | |
c906108c SS |
2617 | { |
2618 | struct partial_symtab *psymtab; | |
2619 | ||
2620 | psymtab = allocate_psymtab (filename, objfile); | |
c5aa993b JM |
2621 | psymtab->section_offsets = section_offsets; |
2622 | psymtab->textlow = textlow; | |
2623 | psymtab->texthigh = psymtab->textlow; /* default */ | |
2624 | psymtab->globals_offset = global_syms - objfile->global_psymbols.list; | |
2625 | psymtab->statics_offset = static_syms - objfile->static_psymbols.list; | |
c906108c SS |
2626 | return (psymtab); |
2627 | } | |
2628 | \f | |
2629 | /* Add a symbol with a long value to a psymtab. | |
2630 | Since one arg is a struct, we pass in a ptr and deref it (sigh). */ | |
2631 | ||
2632 | void | |
176620f1 | 2633 | add_psymbol_to_list (char *name, int namelength, domain_enum domain, |
fba45db2 KB |
2634 | enum address_class class, |
2635 | struct psymbol_allocation_list *list, long val, /* Value as a long */ | |
2636 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ | |
2637 | enum language language, struct objfile *objfile) | |
c906108c SS |
2638 | { |
2639 | register struct partial_symbol *psym; | |
2640 | char *buf = alloca (namelength + 1); | |
2641 | /* psymbol is static so that there will be no uninitialized gaps in the | |
2642 | structure which might contain random data, causing cache misses in | |
2643 | bcache. */ | |
2644 | static struct partial_symbol psymbol; | |
2645 | ||
2646 | /* Create local copy of the partial symbol */ | |
2647 | memcpy (buf, name, namelength); | |
2648 | buf[namelength] = '\0'; | |
c906108c SS |
2649 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ |
2650 | if (val != 0) | |
2651 | { | |
2652 | SYMBOL_VALUE (&psymbol) = val; | |
2653 | } | |
2654 | else | |
2655 | { | |
2656 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; | |
2657 | } | |
2658 | SYMBOL_SECTION (&psymbol) = 0; | |
2659 | SYMBOL_LANGUAGE (&psymbol) = language; | |
176620f1 | 2660 | PSYMBOL_DOMAIN (&psymbol) = domain; |
c906108c | 2661 | PSYMBOL_CLASS (&psymbol) = class; |
2de7ced7 DJ |
2662 | |
2663 | SYMBOL_SET_NAMES (&psymbol, buf, namelength, objfile); | |
c906108c SS |
2664 | |
2665 | /* Stash the partial symbol away in the cache */ | |
af5f3db6 | 2666 | psym = bcache (&psymbol, sizeof (struct partial_symbol), objfile->psymbol_cache); |
c906108c SS |
2667 | |
2668 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ | |
2669 | if (list->next >= list->list + list->size) | |
2670 | { | |
2671 | extend_psymbol_list (list, objfile); | |
2672 | } | |
2673 | *list->next++ = psym; | |
2674 | OBJSTAT (objfile, n_psyms++); | |
2675 | } | |
2676 | ||
2677 | /* Add a symbol with a long value to a psymtab. This differs from | |
2678 | * add_psymbol_to_list above in taking both a mangled and a demangled | |
2679 | * name. */ | |
2680 | ||
2681 | void | |
fba45db2 | 2682 | add_psymbol_with_dem_name_to_list (char *name, int namelength, char *dem_name, |
176620f1 | 2683 | int dem_namelength, domain_enum domain, |
fba45db2 KB |
2684 | enum address_class class, |
2685 | struct psymbol_allocation_list *list, long val, /* Value as a long */ | |
2686 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ | |
2687 | enum language language, | |
2688 | struct objfile *objfile) | |
c906108c SS |
2689 | { |
2690 | register struct partial_symbol *psym; | |
2691 | char *buf = alloca (namelength + 1); | |
2692 | /* psymbol is static so that there will be no uninitialized gaps in the | |
2693 | structure which might contain random data, causing cache misses in | |
2694 | bcache. */ | |
2695 | static struct partial_symbol psymbol; | |
2696 | ||
2697 | /* Create local copy of the partial symbol */ | |
2698 | ||
2699 | memcpy (buf, name, namelength); | |
2700 | buf[namelength] = '\0'; | |
22abf04a | 2701 | DEPRECATED_SYMBOL_NAME (&psymbol) = bcache (buf, namelength + 1, objfile->psymbol_cache); |
c906108c SS |
2702 | |
2703 | buf = alloca (dem_namelength + 1); | |
2704 | memcpy (buf, dem_name, dem_namelength); | |
2705 | buf[dem_namelength] = '\0'; | |
c5aa993b | 2706 | |
c906108c SS |
2707 | switch (language) |
2708 | { | |
c5aa993b JM |
2709 | case language_c: |
2710 | case language_cplus: | |
2711 | SYMBOL_CPLUS_DEMANGLED_NAME (&psymbol) = | |
af5f3db6 | 2712 | bcache (buf, dem_namelength + 1, objfile->psymbol_cache); |
c5aa993b | 2713 | break; |
c906108c SS |
2714 | /* FIXME What should be done for the default case? Ignoring for now. */ |
2715 | } | |
2716 | ||
2717 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ | |
2718 | if (val != 0) | |
2719 | { | |
2720 | SYMBOL_VALUE (&psymbol) = val; | |
2721 | } | |
2722 | else | |
2723 | { | |
2724 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; | |
2725 | } | |
2726 | SYMBOL_SECTION (&psymbol) = 0; | |
2727 | SYMBOL_LANGUAGE (&psymbol) = language; | |
176620f1 | 2728 | PSYMBOL_DOMAIN (&psymbol) = domain; |
c906108c SS |
2729 | PSYMBOL_CLASS (&psymbol) = class; |
2730 | SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol, language); | |
2731 | ||
2732 | /* Stash the partial symbol away in the cache */ | |
af5f3db6 | 2733 | psym = bcache (&psymbol, sizeof (struct partial_symbol), objfile->psymbol_cache); |
c906108c SS |
2734 | |
2735 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ | |
2736 | if (list->next >= list->list + list->size) | |
2737 | { | |
2738 | extend_psymbol_list (list, objfile); | |
2739 | } | |
2740 | *list->next++ = psym; | |
2741 | OBJSTAT (objfile, n_psyms++); | |
2742 | } | |
2743 | ||
2744 | /* Initialize storage for partial symbols. */ | |
2745 | ||
2746 | void | |
fba45db2 | 2747 | init_psymbol_list (struct objfile *objfile, int total_symbols) |
c906108c SS |
2748 | { |
2749 | /* Free any previously allocated psymbol lists. */ | |
c5aa993b JM |
2750 | |
2751 | if (objfile->global_psymbols.list) | |
c906108c | 2752 | { |
4efb68b1 | 2753 | xmfree (objfile->md, objfile->global_psymbols.list); |
c906108c | 2754 | } |
c5aa993b | 2755 | if (objfile->static_psymbols.list) |
c906108c | 2756 | { |
4efb68b1 | 2757 | xmfree (objfile->md, objfile->static_psymbols.list); |
c906108c | 2758 | } |
c5aa993b | 2759 | |
c906108c SS |
2760 | /* Current best guess is that approximately a twentieth |
2761 | of the total symbols (in a debugging file) are global or static | |
2762 | oriented symbols */ | |
c906108c | 2763 | |
c5aa993b JM |
2764 | objfile->global_psymbols.size = total_symbols / 10; |
2765 | objfile->static_psymbols.size = total_symbols / 10; | |
2766 | ||
2767 | if (objfile->global_psymbols.size > 0) | |
c906108c | 2768 | { |
c5aa993b JM |
2769 | objfile->global_psymbols.next = |
2770 | objfile->global_psymbols.list = (struct partial_symbol **) | |
2771 | xmmalloc (objfile->md, (objfile->global_psymbols.size | |
2772 | * sizeof (struct partial_symbol *))); | |
c906108c | 2773 | } |
c5aa993b | 2774 | if (objfile->static_psymbols.size > 0) |
c906108c | 2775 | { |
c5aa993b JM |
2776 | objfile->static_psymbols.next = |
2777 | objfile->static_psymbols.list = (struct partial_symbol **) | |
2778 | xmmalloc (objfile->md, (objfile->static_psymbols.size | |
2779 | * sizeof (struct partial_symbol *))); | |
c906108c SS |
2780 | } |
2781 | } | |
2782 | ||
2783 | /* OVERLAYS: | |
2784 | The following code implements an abstraction for debugging overlay sections. | |
2785 | ||
2786 | The target model is as follows: | |
2787 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2788 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2789 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2790 | sections, one by one, from the load address into the VMA address. |
c906108c | 2791 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2792 | sections should be considered to be mapped from the VMA to the LMA. |
2793 | This information is used for symbol lookup, and memory read/write. | |
2794 | For instance, if a section has been mapped then its contents | |
2795 | should be read from the VMA, otherwise from the LMA. | |
c906108c SS |
2796 | |
2797 | Two levels of debugger support for overlays are available. One is | |
2798 | "manual", in which the debugger relies on the user to tell it which | |
2799 | overlays are currently mapped. This level of support is | |
2800 | implemented entirely in the core debugger, and the information about | |
2801 | whether a section is mapped is kept in the objfile->obj_section table. | |
2802 | ||
2803 | The second level of support is "automatic", and is only available if | |
2804 | the target-specific code provides functionality to read the target's | |
2805 | overlay mapping table, and translate its contents for the debugger | |
2806 | (by updating the mapped state information in the obj_section tables). | |
2807 | ||
2808 | The interface is as follows: | |
c5aa993b JM |
2809 | User commands: |
2810 | overlay map <name> -- tell gdb to consider this section mapped | |
2811 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2812 | overlay list -- list the sections that GDB thinks are mapped | |
2813 | overlay read-target -- get the target's state of what's mapped | |
2814 | overlay off/manual/auto -- set overlay debugging state | |
2815 | Functional interface: | |
2816 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2817 | section, return that section. | |
2818 | find_pc_overlay(pc): find any overlay section that contains | |
2819 | the pc, either in its VMA or its LMA | |
2820 | overlay_is_mapped(sect): true if overlay is marked as mapped | |
2821 | section_is_overlay(sect): true if section's VMA != LMA | |
2822 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2823 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 2824 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
2825 | overlay_mapped_address(...): map an address from section's LMA to VMA |
2826 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2827 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2828 | either in VMA or LMA depending on whether | |
2829 | the symbol's section is currently mapped | |
c906108c SS |
2830 | */ |
2831 | ||
2832 | /* Overlay debugging state: */ | |
2833 | ||
d874f1e2 | 2834 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c906108c SS |
2835 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state */ |
2836 | ||
2837 | /* Target vector for refreshing overlay mapped state */ | |
a14ed312 | 2838 | static void simple_overlay_update (struct obj_section *); |
507f3c78 | 2839 | void (*target_overlay_update) (struct obj_section *) = simple_overlay_update; |
c906108c SS |
2840 | |
2841 | /* Function: section_is_overlay (SECTION) | |
2842 | Returns true if SECTION has VMA not equal to LMA, ie. | |
2843 | SECTION is loaded at an address different from where it will "run". */ | |
2844 | ||
2845 | int | |
fba45db2 | 2846 | section_is_overlay (asection *section) |
c906108c | 2847 | { |
fbd35540 MS |
2848 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ |
2849 | ||
c906108c SS |
2850 | if (overlay_debugging) |
2851 | if (section && section->lma != 0 && | |
2852 | section->vma != section->lma) | |
2853 | return 1; | |
2854 | ||
2855 | return 0; | |
2856 | } | |
2857 | ||
2858 | /* Function: overlay_invalidate_all (void) | |
2859 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
2860 | ||
2861 | static void | |
fba45db2 | 2862 | overlay_invalidate_all (void) |
c906108c | 2863 | { |
c5aa993b | 2864 | struct objfile *objfile; |
c906108c SS |
2865 | struct obj_section *sect; |
2866 | ||
2867 | ALL_OBJSECTIONS (objfile, sect) | |
2868 | if (section_is_overlay (sect->the_bfd_section)) | |
c5aa993b | 2869 | sect->ovly_mapped = -1; |
c906108c SS |
2870 | } |
2871 | ||
2872 | /* Function: overlay_is_mapped (SECTION) | |
2873 | Returns true if section is an overlay, and is currently mapped. | |
2874 | Private: public access is thru function section_is_mapped. | |
2875 | ||
2876 | Access to the ovly_mapped flag is restricted to this function, so | |
2877 | that we can do automatic update. If the global flag | |
2878 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
2879 | overlay_invalidate_all. If the mapped state of the particular | |
2880 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
2881 | ||
c5aa993b | 2882 | static int |
fba45db2 | 2883 | overlay_is_mapped (struct obj_section *osect) |
c906108c SS |
2884 | { |
2885 | if (osect == 0 || !section_is_overlay (osect->the_bfd_section)) | |
2886 | return 0; | |
2887 | ||
c5aa993b | 2888 | switch (overlay_debugging) |
c906108c SS |
2889 | { |
2890 | default: | |
d874f1e2 | 2891 | case ovly_off: |
c5aa993b | 2892 | return 0; /* overlay debugging off */ |
d874f1e2 | 2893 | case ovly_auto: /* overlay debugging automatic */ |
c906108c | 2894 | /* Unles there is a target_overlay_update function, |
c5aa993b | 2895 | there's really nothing useful to do here (can't really go auto) */ |
c906108c SS |
2896 | if (target_overlay_update) |
2897 | { | |
2898 | if (overlay_cache_invalid) | |
2899 | { | |
2900 | overlay_invalidate_all (); | |
2901 | overlay_cache_invalid = 0; | |
2902 | } | |
2903 | if (osect->ovly_mapped == -1) | |
2904 | (*target_overlay_update) (osect); | |
2905 | } | |
2906 | /* fall thru to manual case */ | |
d874f1e2 | 2907 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
2908 | return osect->ovly_mapped == 1; |
2909 | } | |
2910 | } | |
2911 | ||
2912 | /* Function: section_is_mapped | |
2913 | Returns true if section is an overlay, and is currently mapped. */ | |
2914 | ||
2915 | int | |
fba45db2 | 2916 | section_is_mapped (asection *section) |
c906108c | 2917 | { |
c5aa993b | 2918 | struct objfile *objfile; |
c906108c SS |
2919 | struct obj_section *osect; |
2920 | ||
2921 | if (overlay_debugging) | |
2922 | if (section && section_is_overlay (section)) | |
2923 | ALL_OBJSECTIONS (objfile, osect) | |
2924 | if (osect->the_bfd_section == section) | |
c5aa993b | 2925 | return overlay_is_mapped (osect); |
c906108c SS |
2926 | |
2927 | return 0; | |
2928 | } | |
2929 | ||
2930 | /* Function: pc_in_unmapped_range | |
2931 | If PC falls into the lma range of SECTION, return true, else false. */ | |
2932 | ||
2933 | CORE_ADDR | |
fba45db2 | 2934 | pc_in_unmapped_range (CORE_ADDR pc, asection *section) |
c906108c | 2935 | { |
fbd35540 MS |
2936 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ |
2937 | ||
c906108c SS |
2938 | int size; |
2939 | ||
2940 | if (overlay_debugging) | |
2941 | if (section && section_is_overlay (section)) | |
2942 | { | |
2943 | size = bfd_get_section_size_before_reloc (section); | |
2944 | if (section->lma <= pc && pc < section->lma + size) | |
2945 | return 1; | |
2946 | } | |
2947 | return 0; | |
2948 | } | |
2949 | ||
2950 | /* Function: pc_in_mapped_range | |
2951 | If PC falls into the vma range of SECTION, return true, else false. */ | |
2952 | ||
2953 | CORE_ADDR | |
fba45db2 | 2954 | pc_in_mapped_range (CORE_ADDR pc, asection *section) |
c906108c | 2955 | { |
fbd35540 MS |
2956 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ |
2957 | ||
c906108c SS |
2958 | int size; |
2959 | ||
2960 | if (overlay_debugging) | |
2961 | if (section && section_is_overlay (section)) | |
2962 | { | |
2963 | size = bfd_get_section_size_before_reloc (section); | |
2964 | if (section->vma <= pc && pc < section->vma + size) | |
2965 | return 1; | |
2966 | } | |
2967 | return 0; | |
2968 | } | |
2969 | ||
9ec8e6a0 JB |
2970 | |
2971 | /* Return true if the mapped ranges of sections A and B overlap, false | |
2972 | otherwise. */ | |
b9362cc7 | 2973 | static int |
9ec8e6a0 JB |
2974 | sections_overlap (asection *a, asection *b) |
2975 | { | |
fbd35540 MS |
2976 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ |
2977 | ||
9ec8e6a0 JB |
2978 | CORE_ADDR a_start = a->vma; |
2979 | CORE_ADDR a_end = a->vma + bfd_get_section_size_before_reloc (a); | |
2980 | CORE_ADDR b_start = b->vma; | |
2981 | CORE_ADDR b_end = b->vma + bfd_get_section_size_before_reloc (b); | |
2982 | ||
2983 | return (a_start < b_end && b_start < a_end); | |
2984 | } | |
2985 | ||
c906108c SS |
2986 | /* Function: overlay_unmapped_address (PC, SECTION) |
2987 | Returns the address corresponding to PC in the unmapped (load) range. | |
2988 | May be the same as PC. */ | |
2989 | ||
2990 | CORE_ADDR | |
fba45db2 | 2991 | overlay_unmapped_address (CORE_ADDR pc, asection *section) |
c906108c | 2992 | { |
fbd35540 MS |
2993 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ |
2994 | ||
c906108c SS |
2995 | if (overlay_debugging) |
2996 | if (section && section_is_overlay (section) && | |
2997 | pc_in_mapped_range (pc, section)) | |
2998 | return pc + section->lma - section->vma; | |
2999 | ||
3000 | return pc; | |
3001 | } | |
3002 | ||
3003 | /* Function: overlay_mapped_address (PC, SECTION) | |
3004 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3005 | May be the same as PC. */ | |
3006 | ||
3007 | CORE_ADDR | |
fba45db2 | 3008 | overlay_mapped_address (CORE_ADDR pc, asection *section) |
c906108c | 3009 | { |
fbd35540 MS |
3010 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ |
3011 | ||
c906108c SS |
3012 | if (overlay_debugging) |
3013 | if (section && section_is_overlay (section) && | |
3014 | pc_in_unmapped_range (pc, section)) | |
3015 | return pc + section->vma - section->lma; | |
3016 | ||
3017 | return pc; | |
3018 | } | |
3019 | ||
3020 | ||
3021 | /* Function: symbol_overlayed_address | |
3022 | Return one of two addresses (relative to the VMA or to the LMA), | |
3023 | depending on whether the section is mapped or not. */ | |
3024 | ||
c5aa993b | 3025 | CORE_ADDR |
fba45db2 | 3026 | symbol_overlayed_address (CORE_ADDR address, asection *section) |
c906108c SS |
3027 | { |
3028 | if (overlay_debugging) | |
3029 | { | |
3030 | /* If the symbol has no section, just return its regular address. */ | |
3031 | if (section == 0) | |
3032 | return address; | |
3033 | /* If the symbol's section is not an overlay, just return its address */ | |
3034 | if (!section_is_overlay (section)) | |
3035 | return address; | |
3036 | /* If the symbol's section is mapped, just return its address */ | |
3037 | if (section_is_mapped (section)) | |
3038 | return address; | |
3039 | /* | |
3040 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3041 | * then return its LOADED address rather than its vma address!! | |
3042 | */ | |
3043 | return overlay_unmapped_address (address, section); | |
3044 | } | |
3045 | return address; | |
3046 | } | |
3047 | ||
3048 | /* Function: find_pc_overlay (PC) | |
3049 | Return the best-match overlay section for PC: | |
3050 | If PC matches a mapped overlay section's VMA, return that section. | |
3051 | Else if PC matches an unmapped section's VMA, return that section. | |
3052 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3053 | ||
3054 | asection * | |
fba45db2 | 3055 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3056 | { |
c5aa993b | 3057 | struct objfile *objfile; |
c906108c SS |
3058 | struct obj_section *osect, *best_match = NULL; |
3059 | ||
3060 | if (overlay_debugging) | |
3061 | ALL_OBJSECTIONS (objfile, osect) | |
3062 | if (section_is_overlay (osect->the_bfd_section)) | |
c5aa993b JM |
3063 | { |
3064 | if (pc_in_mapped_range (pc, osect->the_bfd_section)) | |
3065 | { | |
3066 | if (overlay_is_mapped (osect)) | |
3067 | return osect->the_bfd_section; | |
3068 | else | |
3069 | best_match = osect; | |
3070 | } | |
3071 | else if (pc_in_unmapped_range (pc, osect->the_bfd_section)) | |
3072 | best_match = osect; | |
3073 | } | |
c906108c SS |
3074 | return best_match ? best_match->the_bfd_section : NULL; |
3075 | } | |
3076 | ||
3077 | /* Function: find_pc_mapped_section (PC) | |
3078 | If PC falls into the VMA address range of an overlay section that is | |
3079 | currently marked as MAPPED, return that section. Else return NULL. */ | |
3080 | ||
3081 | asection * | |
fba45db2 | 3082 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3083 | { |
c5aa993b | 3084 | struct objfile *objfile; |
c906108c SS |
3085 | struct obj_section *osect; |
3086 | ||
3087 | if (overlay_debugging) | |
3088 | ALL_OBJSECTIONS (objfile, osect) | |
3089 | if (pc_in_mapped_range (pc, osect->the_bfd_section) && | |
3090 | overlay_is_mapped (osect)) | |
c5aa993b | 3091 | return osect->the_bfd_section; |
c906108c SS |
3092 | |
3093 | return NULL; | |
3094 | } | |
3095 | ||
3096 | /* Function: list_overlays_command | |
3097 | Print a list of mapped sections and their PC ranges */ | |
3098 | ||
3099 | void | |
fba45db2 | 3100 | list_overlays_command (char *args, int from_tty) |
c906108c | 3101 | { |
c5aa993b JM |
3102 | int nmapped = 0; |
3103 | struct objfile *objfile; | |
c906108c SS |
3104 | struct obj_section *osect; |
3105 | ||
3106 | if (overlay_debugging) | |
3107 | ALL_OBJSECTIONS (objfile, osect) | |
3108 | if (overlay_is_mapped (osect)) | |
c5aa993b JM |
3109 | { |
3110 | const char *name; | |
3111 | bfd_vma lma, vma; | |
3112 | int size; | |
3113 | ||
3114 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
3115 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
3116 | size = bfd_get_section_size_before_reloc (osect->the_bfd_section); | |
3117 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); | |
3118 | ||
3119 | printf_filtered ("Section %s, loaded at ", name); | |
3120 | print_address_numeric (lma, 1, gdb_stdout); | |
3121 | puts_filtered (" - "); | |
3122 | print_address_numeric (lma + size, 1, gdb_stdout); | |
3123 | printf_filtered (", mapped at "); | |
3124 | print_address_numeric (vma, 1, gdb_stdout); | |
3125 | puts_filtered (" - "); | |
3126 | print_address_numeric (vma + size, 1, gdb_stdout); | |
3127 | puts_filtered ("\n"); | |
3128 | ||
3129 | nmapped++; | |
3130 | } | |
c906108c SS |
3131 | if (nmapped == 0) |
3132 | printf_filtered ("No sections are mapped.\n"); | |
3133 | } | |
3134 | ||
3135 | /* Function: map_overlay_command | |
3136 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3137 | ||
3138 | void | |
fba45db2 | 3139 | map_overlay_command (char *args, int from_tty) |
c906108c | 3140 | { |
c5aa993b JM |
3141 | struct objfile *objfile, *objfile2; |
3142 | struct obj_section *sec, *sec2; | |
3143 | asection *bfdsec; | |
c906108c SS |
3144 | |
3145 | if (!overlay_debugging) | |
515ad16c EZ |
3146 | error ("\ |
3147 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ | |
3148 | the 'overlay manual' command."); | |
c906108c SS |
3149 | |
3150 | if (args == 0 || *args == 0) | |
3151 | error ("Argument required: name of an overlay section"); | |
3152 | ||
3153 | /* First, find a section matching the user supplied argument */ | |
3154 | ALL_OBJSECTIONS (objfile, sec) | |
3155 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3156 | { |
3157 | /* Now, check to see if the section is an overlay. */ | |
3158 | bfdsec = sec->the_bfd_section; | |
3159 | if (!section_is_overlay (bfdsec)) | |
3160 | continue; /* not an overlay section */ | |
3161 | ||
3162 | /* Mark the overlay as "mapped" */ | |
3163 | sec->ovly_mapped = 1; | |
3164 | ||
3165 | /* Next, make a pass and unmap any sections that are | |
3166 | overlapped by this new section: */ | |
3167 | ALL_OBJSECTIONS (objfile2, sec2) | |
9ec8e6a0 JB |
3168 | if (sec2->ovly_mapped |
3169 | && sec != sec2 | |
3170 | && sec->the_bfd_section != sec2->the_bfd_section | |
3171 | && sections_overlap (sec->the_bfd_section, | |
3172 | sec2->the_bfd_section)) | |
c5aa993b JM |
3173 | { |
3174 | if (info_verbose) | |
3175 | printf_filtered ("Note: section %s unmapped by overlap\n", | |
3176 | bfd_section_name (objfile->obfd, | |
3177 | sec2->the_bfd_section)); | |
3178 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2 */ | |
3179 | } | |
3180 | return; | |
3181 | } | |
c906108c SS |
3182 | error ("No overlay section called %s", args); |
3183 | } | |
3184 | ||
3185 | /* Function: unmap_overlay_command | |
3186 | Mark the overlay section as unmapped | |
3187 | (ie. resident in its LMA address range, rather than the VMA range). */ | |
3188 | ||
3189 | void | |
fba45db2 | 3190 | unmap_overlay_command (char *args, int from_tty) |
c906108c | 3191 | { |
c5aa993b | 3192 | struct objfile *objfile; |
c906108c SS |
3193 | struct obj_section *sec; |
3194 | ||
3195 | if (!overlay_debugging) | |
515ad16c EZ |
3196 | error ("\ |
3197 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ | |
3198 | the 'overlay manual' command."); | |
c906108c SS |
3199 | |
3200 | if (args == 0 || *args == 0) | |
3201 | error ("Argument required: name of an overlay section"); | |
3202 | ||
3203 | /* First, find a section matching the user supplied argument */ | |
3204 | ALL_OBJSECTIONS (objfile, sec) | |
3205 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3206 | { |
3207 | if (!sec->ovly_mapped) | |
3208 | error ("Section %s is not mapped", args); | |
3209 | sec->ovly_mapped = 0; | |
3210 | return; | |
3211 | } | |
c906108c SS |
3212 | error ("No overlay section called %s", args); |
3213 | } | |
3214 | ||
3215 | /* Function: overlay_auto_command | |
3216 | A utility command to turn on overlay debugging. | |
3217 | Possibly this should be done via a set/show command. */ | |
3218 | ||
3219 | static void | |
fba45db2 | 3220 | overlay_auto_command (char *args, int from_tty) |
c906108c | 3221 | { |
d874f1e2 | 3222 | overlay_debugging = ovly_auto; |
1900040c | 3223 | enable_overlay_breakpoints (); |
c906108c SS |
3224 | if (info_verbose) |
3225 | printf_filtered ("Automatic overlay debugging enabled."); | |
3226 | } | |
3227 | ||
3228 | /* Function: overlay_manual_command | |
3229 | A utility command to turn on overlay debugging. | |
3230 | Possibly this should be done via a set/show command. */ | |
3231 | ||
3232 | static void | |
fba45db2 | 3233 | overlay_manual_command (char *args, int from_tty) |
c906108c | 3234 | { |
d874f1e2 | 3235 | overlay_debugging = ovly_on; |
1900040c | 3236 | disable_overlay_breakpoints (); |
c906108c SS |
3237 | if (info_verbose) |
3238 | printf_filtered ("Overlay debugging enabled."); | |
3239 | } | |
3240 | ||
3241 | /* Function: overlay_off_command | |
3242 | A utility command to turn on overlay debugging. | |
3243 | Possibly this should be done via a set/show command. */ | |
3244 | ||
3245 | static void | |
fba45db2 | 3246 | overlay_off_command (char *args, int from_tty) |
c906108c | 3247 | { |
d874f1e2 | 3248 | overlay_debugging = ovly_off; |
1900040c | 3249 | disable_overlay_breakpoints (); |
c906108c SS |
3250 | if (info_verbose) |
3251 | printf_filtered ("Overlay debugging disabled."); | |
3252 | } | |
3253 | ||
3254 | static void | |
fba45db2 | 3255 | overlay_load_command (char *args, int from_tty) |
c906108c SS |
3256 | { |
3257 | if (target_overlay_update) | |
3258 | (*target_overlay_update) (NULL); | |
3259 | else | |
3260 | error ("This target does not know how to read its overlay state."); | |
3261 | } | |
3262 | ||
3263 | /* Function: overlay_command | |
3264 | A place-holder for a mis-typed command */ | |
3265 | ||
3266 | /* Command list chain containing all defined "overlay" subcommands. */ | |
3267 | struct cmd_list_element *overlaylist; | |
3268 | ||
3269 | static void | |
fba45db2 | 3270 | overlay_command (char *args, int from_tty) |
c906108c | 3271 | { |
c5aa993b | 3272 | printf_unfiltered |
c906108c SS |
3273 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
3274 | help_list (overlaylist, "overlay ", -1, gdb_stdout); | |
3275 | } | |
3276 | ||
3277 | ||
3278 | /* Target Overlays for the "Simplest" overlay manager: | |
3279 | ||
3280 | This is GDB's default target overlay layer. It works with the | |
3281 | minimal overlay manager supplied as an example by Cygnus. The | |
3282 | entry point is via a function pointer "target_overlay_update", | |
3283 | so targets that use a different runtime overlay manager can | |
3284 | substitute their own overlay_update function and take over the | |
3285 | function pointer. | |
3286 | ||
3287 | The overlay_update function pokes around in the target's data structures | |
3288 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3289 | this information. | |
3290 | ||
3291 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3292 | unsigned _novlys; /# number of overlay sections #/ |
3293 | unsigned _ovly_table[_novlys][4] = { | |
3294 | {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/ | |
3295 | {..., ..., ..., ...}, | |
3296 | } | |
3297 | unsigned _novly_regions; /# number of overlay regions #/ | |
3298 | unsigned _ovly_region_table[_novly_regions][3] = { | |
3299 | {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ | |
3300 | {..., ..., ...}, | |
3301 | } | |
c906108c SS |
3302 | These functions will attempt to update GDB's mappedness state in the |
3303 | symbol section table, based on the target's mappedness state. | |
3304 | ||
3305 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3306 | attempt to detect when the cached copy is invalidated. The main | |
3307 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3308 | the cached table and re-reads only the entry for that section from | |
3309 | the target (whenever possible). | |
3310 | */ | |
3311 | ||
3312 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3313 | static unsigned (*cache_ovly_table)[4] = 0; |
c906108c | 3314 | #if 0 |
c5aa993b | 3315 | static unsigned (*cache_ovly_region_table)[3] = 0; |
c906108c | 3316 | #endif |
c5aa993b | 3317 | static unsigned cache_novlys = 0; |
c906108c | 3318 | #if 0 |
c5aa993b | 3319 | static unsigned cache_novly_regions = 0; |
c906108c SS |
3320 | #endif |
3321 | static CORE_ADDR cache_ovly_table_base = 0; | |
3322 | #if 0 | |
3323 | static CORE_ADDR cache_ovly_region_table_base = 0; | |
3324 | #endif | |
c5aa993b JM |
3325 | enum ovly_index |
3326 | { | |
3327 | VMA, SIZE, LMA, MAPPED | |
3328 | }; | |
c906108c SS |
3329 | #define TARGET_LONG_BYTES (TARGET_LONG_BIT / TARGET_CHAR_BIT) |
3330 | ||
3331 | /* Throw away the cached copy of _ovly_table */ | |
3332 | static void | |
fba45db2 | 3333 | simple_free_overlay_table (void) |
c906108c SS |
3334 | { |
3335 | if (cache_ovly_table) | |
b8c9b27d | 3336 | xfree (cache_ovly_table); |
c5aa993b | 3337 | cache_novlys = 0; |
c906108c SS |
3338 | cache_ovly_table = NULL; |
3339 | cache_ovly_table_base = 0; | |
3340 | } | |
3341 | ||
3342 | #if 0 | |
3343 | /* Throw away the cached copy of _ovly_region_table */ | |
3344 | static void | |
fba45db2 | 3345 | simple_free_overlay_region_table (void) |
c906108c SS |
3346 | { |
3347 | if (cache_ovly_region_table) | |
b8c9b27d | 3348 | xfree (cache_ovly_region_table); |
c5aa993b | 3349 | cache_novly_regions = 0; |
c906108c SS |
3350 | cache_ovly_region_table = NULL; |
3351 | cache_ovly_region_table_base = 0; | |
3352 | } | |
3353 | #endif | |
3354 | ||
3355 | /* Read an array of ints from the target into a local buffer. | |
3356 | Convert to host order. int LEN is number of ints */ | |
3357 | static void | |
fba45db2 | 3358 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, int len) |
c906108c | 3359 | { |
34c0bd93 | 3360 | /* FIXME (alloca): Not safe if array is very large. */ |
c906108c | 3361 | char *buf = alloca (len * TARGET_LONG_BYTES); |
c5aa993b | 3362 | int i; |
c906108c SS |
3363 | |
3364 | read_memory (memaddr, buf, len * TARGET_LONG_BYTES); | |
3365 | for (i = 0; i < len; i++) | |
c5aa993b | 3366 | myaddr[i] = extract_unsigned_integer (TARGET_LONG_BYTES * i + buf, |
c906108c SS |
3367 | TARGET_LONG_BYTES); |
3368 | } | |
3369 | ||
3370 | /* Find and grab a copy of the target _ovly_table | |
3371 | (and _novlys, which is needed for the table's size) */ | |
c5aa993b | 3372 | static int |
fba45db2 | 3373 | simple_read_overlay_table (void) |
c906108c | 3374 | { |
0d43edd1 | 3375 | struct minimal_symbol *novlys_msym, *ovly_table_msym; |
c906108c SS |
3376 | |
3377 | simple_free_overlay_table (); | |
9b27852e | 3378 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
0d43edd1 | 3379 | if (! novlys_msym) |
c906108c | 3380 | { |
0d43edd1 JB |
3381 | error ("Error reading inferior's overlay table: " |
3382 | "couldn't find `_novlys' variable\n" | |
3383 | "in inferior. Use `overlay manual' mode."); | |
3384 | return 0; | |
c906108c | 3385 | } |
0d43edd1 | 3386 | |
9b27852e | 3387 | ovly_table_msym = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
0d43edd1 JB |
3388 | if (! ovly_table_msym) |
3389 | { | |
3390 | error ("Error reading inferior's overlay table: couldn't find " | |
3391 | "`_ovly_table' array\n" | |
3392 | "in inferior. Use `overlay manual' mode."); | |
3393 | return 0; | |
3394 | } | |
3395 | ||
3396 | cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (novlys_msym), 4); | |
3397 | cache_ovly_table | |
3398 | = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); | |
3399 | cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (ovly_table_msym); | |
3400 | read_target_long_array (cache_ovly_table_base, | |
3401 | (int *) cache_ovly_table, | |
3402 | cache_novlys * 4); | |
3403 | ||
c5aa993b | 3404 | return 1; /* SUCCESS */ |
c906108c SS |
3405 | } |
3406 | ||
3407 | #if 0 | |
3408 | /* Find and grab a copy of the target _ovly_region_table | |
3409 | (and _novly_regions, which is needed for the table's size) */ | |
c5aa993b | 3410 | static int |
fba45db2 | 3411 | simple_read_overlay_region_table (void) |
c906108c SS |
3412 | { |
3413 | struct minimal_symbol *msym; | |
3414 | ||
3415 | simple_free_overlay_region_table (); | |
9b27852e | 3416 | msym = lookup_minimal_symbol ("_novly_regions", NULL, NULL); |
c906108c SS |
3417 | if (msym != NULL) |
3418 | cache_novly_regions = read_memory_integer (SYMBOL_VALUE_ADDRESS (msym), 4); | |
c5aa993b JM |
3419 | else |
3420 | return 0; /* failure */ | |
c906108c SS |
3421 | cache_ovly_region_table = (void *) xmalloc (cache_novly_regions * 12); |
3422 | if (cache_ovly_region_table != NULL) | |
3423 | { | |
9b27852e | 3424 | msym = lookup_minimal_symbol ("_ovly_region_table", NULL, NULL); |
c906108c SS |
3425 | if (msym != NULL) |
3426 | { | |
3427 | cache_ovly_region_table_base = SYMBOL_VALUE_ADDRESS (msym); | |
c5aa993b JM |
3428 | read_target_long_array (cache_ovly_region_table_base, |
3429 | (int *) cache_ovly_region_table, | |
c906108c SS |
3430 | cache_novly_regions * 3); |
3431 | } | |
c5aa993b JM |
3432 | else |
3433 | return 0; /* failure */ | |
c906108c | 3434 | } |
c5aa993b JM |
3435 | else |
3436 | return 0; /* failure */ | |
3437 | return 1; /* SUCCESS */ | |
c906108c SS |
3438 | } |
3439 | #endif | |
3440 | ||
3441 | /* Function: simple_overlay_update_1 | |
3442 | A helper function for simple_overlay_update. Assuming a cached copy | |
3443 | of _ovly_table exists, look through it to find an entry whose vma, | |
3444 | lma and size match those of OSECT. Re-read the entry and make sure | |
3445 | it still matches OSECT (else the table may no longer be valid). | |
3446 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3447 | success, 0 for failure. */ | |
3448 | ||
3449 | static int | |
fba45db2 | 3450 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c SS |
3451 | { |
3452 | int i, size; | |
fbd35540 MS |
3453 | bfd *obfd = osect->objfile->obfd; |
3454 | asection *bsect = osect->the_bfd_section; | |
c906108c SS |
3455 | |
3456 | size = bfd_get_section_size_before_reloc (osect->the_bfd_section); | |
3457 | for (i = 0; i < cache_novlys; i++) | |
fbd35540 MS |
3458 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3459 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3460 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3461 | { |
3462 | read_target_long_array (cache_ovly_table_base + i * TARGET_LONG_BYTES, | |
3463 | (int *) cache_ovly_table[i], 4); | |
fbd35540 MS |
3464 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3465 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3466 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3467 | { |
3468 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3469 | return 1; | |
3470 | } | |
fbd35540 | 3471 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3472 | return 0; |
3473 | } | |
3474 | return 0; | |
3475 | } | |
3476 | ||
3477 | /* Function: simple_overlay_update | |
3478 | If OSECT is NULL, then update all sections' mapped state | |
3479 | (after re-reading the entire target _ovly_table). | |
3480 | If OSECT is non-NULL, then try to find a matching entry in the | |
3481 | cached ovly_table and update only OSECT's mapped state. | |
3482 | If a cached entry can't be found or the cache isn't valid, then | |
3483 | re-read the entire cache, and go ahead and update all sections. */ | |
3484 | ||
3485 | static void | |
fba45db2 | 3486 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3487 | { |
c5aa993b | 3488 | struct objfile *objfile; |
c906108c SS |
3489 | |
3490 | /* Were we given an osect to look up? NULL means do all of them. */ | |
3491 | if (osect) | |
3492 | /* Have we got a cached copy of the target's overlay table? */ | |
3493 | if (cache_ovly_table != NULL) | |
3494 | /* Does its cached location match what's currently in the symtab? */ | |
c5aa993b | 3495 | if (cache_ovly_table_base == |
9b27852e | 3496 | SYMBOL_VALUE_ADDRESS (lookup_minimal_symbol ("_ovly_table", NULL, NULL))) |
c906108c SS |
3497 | /* Then go ahead and try to look up this single section in the cache */ |
3498 | if (simple_overlay_update_1 (osect)) | |
3499 | /* Found it! We're done. */ | |
3500 | return; | |
3501 | ||
3502 | /* Cached table no good: need to read the entire table anew. | |
3503 | Or else we want all the sections, in which case it's actually | |
3504 | more efficient to read the whole table in one block anyway. */ | |
3505 | ||
0d43edd1 JB |
3506 | if (! simple_read_overlay_table ()) |
3507 | return; | |
3508 | ||
c906108c SS |
3509 | /* Now may as well update all sections, even if only one was requested. */ |
3510 | ALL_OBJSECTIONS (objfile, osect) | |
3511 | if (section_is_overlay (osect->the_bfd_section)) | |
c5aa993b JM |
3512 | { |
3513 | int i, size; | |
fbd35540 MS |
3514 | bfd *obfd = osect->objfile->obfd; |
3515 | asection *bsect = osect->the_bfd_section; | |
c5aa993b JM |
3516 | |
3517 | size = bfd_get_section_size_before_reloc (osect->the_bfd_section); | |
3518 | for (i = 0; i < cache_novlys; i++) | |
fbd35540 MS |
3519 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3520 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3521 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
3522 | { /* obj_section matches i'th entry in ovly_table */ | |
c5aa993b JM |
3523 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; |
3524 | break; /* finished with inner for loop: break out */ | |
3525 | } | |
3526 | } | |
c906108c SS |
3527 | } |
3528 | ||
086df311 DJ |
3529 | /* Set the output sections and output offsets for section SECTP in |
3530 | ABFD. The relocation code in BFD will read these offsets, so we | |
3531 | need to be sure they're initialized. We map each section to itself, | |
3532 | with no offset; this means that SECTP->vma will be honored. */ | |
3533 | ||
3534 | static void | |
3535 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3536 | { | |
3537 | sectp->output_section = sectp; | |
3538 | sectp->output_offset = 0; | |
3539 | } | |
3540 | ||
3541 | /* Relocate the contents of a debug section SECTP in ABFD. The | |
3542 | contents are stored in BUF if it is non-NULL, or returned in a | |
3543 | malloc'd buffer otherwise. | |
3544 | ||
3545 | For some platforms and debug info formats, shared libraries contain | |
3546 | relocations against the debug sections (particularly for DWARF-2; | |
3547 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3548 | the version of the linker in use). Also, ELF object files naturally | |
3549 | have unresolved relocations for their debug sections. We need to apply | |
3550 | the relocations in order to get the locations of symbols correct. */ | |
3551 | ||
3552 | bfd_byte * | |
3553 | symfile_relocate_debug_section (bfd *abfd, asection *sectp, bfd_byte *buf) | |
3554 | { | |
3555 | /* We're only interested in debugging sections with relocation | |
3556 | information. */ | |
3557 | if ((sectp->flags & SEC_RELOC) == 0) | |
3558 | return NULL; | |
3559 | if ((sectp->flags & SEC_DEBUGGING) == 0) | |
3560 | return NULL; | |
3561 | ||
3562 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3563 | all sections begin at 0. */ | |
3564 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3565 | ||
97606a13 | 3566 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); |
086df311 | 3567 | } |
c906108c SS |
3568 | |
3569 | void | |
fba45db2 | 3570 | _initialize_symfile (void) |
c906108c SS |
3571 | { |
3572 | struct cmd_list_element *c; | |
c5aa993b | 3573 | |
c906108c | 3574 | c = add_cmd ("symbol-file", class_files, symbol_file_command, |
c5aa993b | 3575 | "Load symbol table from executable file FILE.\n\ |
c906108c SS |
3576 | The `file' command can also load symbol tables, as well as setting the file\n\ |
3577 | to execute.", &cmdlist); | |
5ba2abeb | 3578 | set_cmd_completer (c, filename_completer); |
c906108c SS |
3579 | |
3580 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, | |
db162d44 | 3581 | "Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR> ...]\n\ |
c906108c | 3582 | Load the symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
2acceee2 | 3583 | ADDR is the starting address of the file's text.\n\ |
db162d44 EZ |
3584 | The optional arguments are section-name section-address pairs and\n\ |
3585 | should be specified if the data and bss segments are not contiguous\n\ | |
d4654627 | 3586 | with the text. SECT is a section name to be loaded at SECT_ADDR.", |
c906108c | 3587 | &cmdlist); |
5ba2abeb | 3588 | set_cmd_completer (c, filename_completer); |
c906108c SS |
3589 | |
3590 | c = add_cmd ("add-shared-symbol-files", class_files, | |
3591 | add_shared_symbol_files_command, | |
3592 | "Load the symbols from shared objects in the dynamic linker's link map.", | |
c5aa993b | 3593 | &cmdlist); |
c906108c SS |
3594 | c = add_alias_cmd ("assf", "add-shared-symbol-files", class_files, 1, |
3595 | &cmdlist); | |
3596 | ||
3597 | c = add_cmd ("load", class_files, load_command, | |
c5aa993b | 3598 | "Dynamically load FILE into the running program, and record its symbols\n\ |
c906108c | 3599 | for access from GDB.", &cmdlist); |
5ba2abeb | 3600 | set_cmd_completer (c, filename_completer); |
c906108c SS |
3601 | |
3602 | add_show_from_set | |
3603 | (add_set_cmd ("symbol-reloading", class_support, var_boolean, | |
c5aa993b JM |
3604 | (char *) &symbol_reloading, |
3605 | "Set dynamic symbol table reloading multiple times in one run.", | |
c906108c SS |
3606 | &setlist), |
3607 | &showlist); | |
3608 | ||
c5aa993b JM |
3609 | add_prefix_cmd ("overlay", class_support, overlay_command, |
3610 | "Commands for debugging overlays.", &overlaylist, | |
c906108c SS |
3611 | "overlay ", 0, &cmdlist); |
3612 | ||
3613 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3614 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3615 | ||
c5aa993b | 3616 | add_cmd ("map-overlay", class_support, map_overlay_command, |
c906108c SS |
3617 | "Assert that an overlay section is mapped.", &overlaylist); |
3618 | ||
c5aa993b | 3619 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
c906108c SS |
3620 | "Assert that an overlay section is unmapped.", &overlaylist); |
3621 | ||
c5aa993b | 3622 | add_cmd ("list-overlays", class_support, list_overlays_command, |
c906108c SS |
3623 | "List mappings of overlay sections.", &overlaylist); |
3624 | ||
c5aa993b | 3625 | add_cmd ("manual", class_support, overlay_manual_command, |
c906108c | 3626 | "Enable overlay debugging.", &overlaylist); |
c5aa993b | 3627 | add_cmd ("off", class_support, overlay_off_command, |
c906108c | 3628 | "Disable overlay debugging.", &overlaylist); |
c5aa993b | 3629 | add_cmd ("auto", class_support, overlay_auto_command, |
c906108c | 3630 | "Enable automatic overlay debugging.", &overlaylist); |
c5aa993b | 3631 | add_cmd ("load-target", class_support, overlay_load_command, |
c906108c SS |
3632 | "Read the overlay mapping state from the target.", &overlaylist); |
3633 | ||
3634 | /* Filename extension to source language lookup table: */ | |
3635 | init_filename_language_table (); | |
3636 | c = add_set_cmd ("extension-language", class_files, var_string_noescape, | |
c5aa993b | 3637 | (char *) &ext_args, |
c906108c SS |
3638 | "Set mapping between filename extension and source language.\n\ |
3639 | Usage: set extension-language .foo bar", | |
c5aa993b | 3640 | &setlist); |
9f60d481 | 3641 | set_cmd_cfunc (c, set_ext_lang_command); |
c906108c | 3642 | |
c5aa993b | 3643 | add_info ("extensions", info_ext_lang_command, |
c906108c | 3644 | "All filename extensions associated with a source language."); |
917317f4 JM |
3645 | |
3646 | add_show_from_set | |
3647 | (add_set_cmd ("download-write-size", class_obscure, | |
3648 | var_integer, (char *) &download_write_size, | |
3649 | "Set the write size used when downloading a program.\n" | |
3650 | "Only used when downloading a program onto a remote\n" | |
3651 | "target. Specify zero, or a negative value, to disable\n" | |
3652 | "blocked writes. The actual size of each transfer is also\n" | |
3653 | "limited by the size of the target packet and the memory\n" | |
3654 | "cache.\n", | |
3655 | &setlist), | |
3656 | &showlist); | |
5b5d99cf JB |
3657 | |
3658 | debug_file_directory = xstrdup (DEBUGDIR); | |
3659 | c = (add_set_cmd | |
3660 | ("debug-file-directory", class_support, var_string, | |
3661 | (char *) &debug_file_directory, | |
3662 | "Set the directory where separate debug symbols are searched for.\n" | |
3663 | "Separate debug symbols are first searched for in the same\n" | |
3664 | "directory as the binary, then in the `" DEBUG_SUBDIRECTORY | |
3665 | "' subdirectory,\n" | |
3666 | "and lastly at the path of the directory of the binary with\n" | |
3667 | "the global debug-file directory prepended\n", | |
3668 | &setlist)); | |
3669 | add_show_from_set (c, &showlist); | |
3670 | set_cmd_completer (c, filename_completer); | |
c906108c | 3671 | } |