Commit | Line | Data |
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c906108c | 1 | /* Generic symbol file reading for the GNU debugger, GDB. |
b6ba6518 KB |
2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
3 | 2000, 2001 Free Software Foundation, Inc. | |
c906108c SS |
4 | Contributed by Cygnus Support, using pieces from other GDB modules. |
5 | ||
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
c906108c | 12 | |
c5aa993b JM |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
c906108c | 17 | |
c5aa993b JM |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
22 | |
23 | #include "defs.h" | |
24 | #include "symtab.h" | |
25 | #include "gdbtypes.h" | |
26 | #include "gdbcore.h" | |
27 | #include "frame.h" | |
28 | #include "target.h" | |
29 | #include "value.h" | |
30 | #include "symfile.h" | |
31 | #include "objfiles.h" | |
32 | #include "gdbcmd.h" | |
33 | #include "breakpoint.h" | |
34 | #include "language.h" | |
35 | #include "complaints.h" | |
36 | #include "demangle.h" | |
c5aa993b | 37 | #include "inferior.h" /* for write_pc */ |
c906108c SS |
38 | #include "gdb-stabs.h" |
39 | #include "obstack.h" | |
d75b5104 | 40 | #include "completer.h" |
c906108c | 41 | |
c906108c SS |
42 | #include <sys/types.h> |
43 | #include <fcntl.h> | |
44 | #include "gdb_string.h" | |
45 | #include "gdb_stat.h" | |
46 | #include <ctype.h> | |
47 | #include <time.h> | |
c906108c SS |
48 | |
49 | #ifndef O_BINARY | |
50 | #define O_BINARY 0 | |
51 | #endif | |
52 | ||
53 | #ifdef HPUXHPPA | |
54 | ||
55 | /* Some HP-UX related globals to clear when a new "main" | |
56 | symbol file is loaded. HP-specific. */ | |
57 | ||
58 | extern int hp_som_som_object_present; | |
59 | extern int hp_cxx_exception_support_initialized; | |
60 | #define RESET_HP_UX_GLOBALS() do {\ | |
61 | hp_som_som_object_present = 0; /* indicates HP-compiled code */ \ | |
62 | hp_cxx_exception_support_initialized = 0; /* must reinitialize exception stuff */ \ | |
63 | } while (0) | |
64 | #endif | |
65 | ||
917317f4 | 66 | int (*ui_load_progress_hook) (const char *section, unsigned long num); |
c2d11a7d JM |
67 | void (*show_load_progress) (const char *section, |
68 | unsigned long section_sent, | |
69 | unsigned long section_size, | |
70 | unsigned long total_sent, | |
71 | unsigned long total_size); | |
507f3c78 KB |
72 | void (*pre_add_symbol_hook) (char *); |
73 | void (*post_add_symbol_hook) (void); | |
74 | void (*target_new_objfile_hook) (struct objfile *); | |
c906108c | 75 | |
74b7792f AC |
76 | static void clear_symtab_users_cleanup (void *ignore); |
77 | ||
c906108c | 78 | /* Global variables owned by this file */ |
c5aa993b | 79 | int readnow_symbol_files; /* Read full symbols immediately */ |
c906108c | 80 | |
c5aa993b JM |
81 | struct complaint oldsyms_complaint = |
82 | { | |
c906108c SS |
83 | "Replacing old symbols for `%s'", 0, 0 |
84 | }; | |
85 | ||
c5aa993b JM |
86 | struct complaint empty_symtab_complaint = |
87 | { | |
c906108c SS |
88 | "Empty symbol table found for `%s'", 0, 0 |
89 | }; | |
90 | ||
2acceee2 JM |
91 | struct complaint unknown_option_complaint = |
92 | { | |
93 | "Unknown option `%s' ignored", 0, 0 | |
94 | }; | |
95 | ||
c906108c SS |
96 | /* External variables and functions referenced. */ |
97 | ||
98 | extern int info_verbose; | |
99 | ||
a14ed312 | 100 | extern void report_transfer_performance (unsigned long, time_t, time_t); |
c906108c SS |
101 | |
102 | /* Functions this file defines */ | |
103 | ||
104 | #if 0 | |
a14ed312 KB |
105 | static int simple_read_overlay_region_table (void); |
106 | static void simple_free_overlay_region_table (void); | |
c906108c SS |
107 | #endif |
108 | ||
a14ed312 | 109 | static void set_initial_language (void); |
c906108c | 110 | |
a14ed312 | 111 | static void load_command (char *, int); |
c906108c | 112 | |
d7db6da9 FN |
113 | static void symbol_file_add_main_1 (char *args, int from_tty, int flags); |
114 | ||
a14ed312 | 115 | static void add_symbol_file_command (char *, int); |
c906108c | 116 | |
a14ed312 | 117 | static void add_shared_symbol_files_command (char *, int); |
c906108c | 118 | |
a14ed312 | 119 | static void cashier_psymtab (struct partial_symtab *); |
c906108c | 120 | |
a14ed312 | 121 | bfd *symfile_bfd_open (char *); |
c906108c | 122 | |
a14ed312 | 123 | static void find_sym_fns (struct objfile *); |
c906108c | 124 | |
a14ed312 | 125 | static void decrement_reading_symtab (void *); |
c906108c | 126 | |
a14ed312 | 127 | static void overlay_invalidate_all (void); |
c906108c | 128 | |
a14ed312 | 129 | static int overlay_is_mapped (struct obj_section *); |
c906108c | 130 | |
a14ed312 | 131 | void list_overlays_command (char *, int); |
c906108c | 132 | |
a14ed312 | 133 | void map_overlay_command (char *, int); |
c906108c | 134 | |
a14ed312 | 135 | void unmap_overlay_command (char *, int); |
c906108c | 136 | |
a14ed312 | 137 | static void overlay_auto_command (char *, int); |
c906108c | 138 | |
a14ed312 | 139 | static void overlay_manual_command (char *, int); |
c906108c | 140 | |
a14ed312 | 141 | static void overlay_off_command (char *, int); |
c906108c | 142 | |
a14ed312 | 143 | static void overlay_load_command (char *, int); |
c906108c | 144 | |
a14ed312 | 145 | static void overlay_command (char *, int); |
c906108c | 146 | |
a14ed312 | 147 | static void simple_free_overlay_table (void); |
c906108c | 148 | |
a14ed312 | 149 | static void read_target_long_array (CORE_ADDR, unsigned int *, int); |
c906108c | 150 | |
a14ed312 | 151 | static int simple_read_overlay_table (void); |
c906108c | 152 | |
a14ed312 | 153 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 154 | |
a14ed312 | 155 | static void add_filename_language (char *ext, enum language lang); |
392a587b | 156 | |
a14ed312 | 157 | static void set_ext_lang_command (char *args, int from_tty); |
392a587b | 158 | |
a14ed312 | 159 | static void info_ext_lang_command (char *args, int from_tty); |
392a587b | 160 | |
a14ed312 | 161 | static void init_filename_language_table (void); |
392a587b | 162 | |
a14ed312 | 163 | void _initialize_symfile (void); |
c906108c SS |
164 | |
165 | /* List of all available sym_fns. On gdb startup, each object file reader | |
166 | calls add_symtab_fns() to register information on each format it is | |
167 | prepared to read. */ | |
168 | ||
169 | static struct sym_fns *symtab_fns = NULL; | |
170 | ||
171 | /* Flag for whether user will be reloading symbols multiple times. | |
172 | Defaults to ON for VxWorks, otherwise OFF. */ | |
173 | ||
174 | #ifdef SYMBOL_RELOADING_DEFAULT | |
175 | int symbol_reloading = SYMBOL_RELOADING_DEFAULT; | |
176 | #else | |
177 | int symbol_reloading = 0; | |
178 | #endif | |
179 | ||
180 | /* If non-zero, then on HP-UX (i.e., platforms that use somsolib.c), | |
181 | this variable is interpreted as a threshhold. If adding a new | |
182 | library's symbol table to those already known to the debugger would | |
183 | exceed this threshhold, then the shlib's symbols are not added. | |
184 | ||
185 | If non-zero on other platforms, shared library symbols will be added | |
186 | automatically when the inferior is created, new libraries are loaded, | |
187 | or when attaching to the inferior. This is almost always what users | |
188 | will want to have happen; but for very large programs, the startup | |
189 | time will be excessive, and so if this is a problem, the user can | |
190 | clear this flag and then add the shared library symbols as needed. | |
191 | Note that there is a potential for confusion, since if the shared | |
192 | library symbols are not loaded, commands like "info fun" will *not* | |
193 | report all the functions that are actually present. | |
194 | ||
195 | Note that HP-UX interprets this variable to mean, "threshhold size | |
196 | in megabytes, where zero means never add". Other platforms interpret | |
197 | this variable to mean, "always add if non-zero, never add if zero." | |
c5aa993b | 198 | */ |
c906108c SS |
199 | |
200 | int auto_solib_add = 1; | |
c906108c | 201 | \f |
c5aa993b | 202 | |
c906108c SS |
203 | /* Since this function is called from within qsort, in an ANSI environment |
204 | it must conform to the prototype for qsort, which specifies that the | |
205 | comparison function takes two "void *" pointers. */ | |
206 | ||
207 | static int | |
0cd64fe2 | 208 | compare_symbols (const void *s1p, const void *s2p) |
c906108c SS |
209 | { |
210 | register struct symbol **s1, **s2; | |
211 | ||
212 | s1 = (struct symbol **) s1p; | |
213 | s2 = (struct symbol **) s2p; | |
494b7ec9 | 214 | return (strcmp (SYMBOL_SOURCE_NAME (*s1), SYMBOL_SOURCE_NAME (*s2))); |
c906108c SS |
215 | } |
216 | ||
217 | /* | |
218 | ||
c5aa993b | 219 | LOCAL FUNCTION |
c906108c | 220 | |
c5aa993b | 221 | compare_psymbols -- compare two partial symbols by name |
c906108c | 222 | |
c5aa993b | 223 | DESCRIPTION |
c906108c | 224 | |
c5aa993b JM |
225 | Given pointers to pointers to two partial symbol table entries, |
226 | compare them by name and return -N, 0, or +N (ala strcmp). | |
227 | Typically used by sorting routines like qsort(). | |
c906108c | 228 | |
c5aa993b | 229 | NOTES |
c906108c | 230 | |
c5aa993b JM |
231 | Does direct compare of first two characters before punting |
232 | and passing to strcmp for longer compares. Note that the | |
233 | original version had a bug whereby two null strings or two | |
234 | identically named one character strings would return the | |
235 | comparison of memory following the null byte. | |
c906108c SS |
236 | |
237 | */ | |
238 | ||
239 | static int | |
0cd64fe2 | 240 | compare_psymbols (const void *s1p, const void *s2p) |
c906108c | 241 | { |
fba7f19c EZ |
242 | register struct partial_symbol **s1, **s2; |
243 | register char *st1, *st2; | |
244 | ||
245 | s1 = (struct partial_symbol **) s1p; | |
246 | s2 = (struct partial_symbol **) s2p; | |
247 | st1 = SYMBOL_SOURCE_NAME (*s1); | |
248 | st2 = SYMBOL_SOURCE_NAME (*s2); | |
249 | ||
c906108c SS |
250 | |
251 | if ((st1[0] - st2[0]) || !st1[0]) | |
252 | { | |
253 | return (st1[0] - st2[0]); | |
254 | } | |
255 | else if ((st1[1] - st2[1]) || !st1[1]) | |
256 | { | |
257 | return (st1[1] - st2[1]); | |
258 | } | |
259 | else | |
260 | { | |
c5aa993b | 261 | return (strcmp (st1, st2)); |
c906108c SS |
262 | } |
263 | } | |
264 | ||
265 | void | |
fba45db2 | 266 | sort_pst_symbols (struct partial_symtab *pst) |
c906108c SS |
267 | { |
268 | /* Sort the global list; don't sort the static list */ | |
269 | ||
c5aa993b JM |
270 | qsort (pst->objfile->global_psymbols.list + pst->globals_offset, |
271 | pst->n_global_syms, sizeof (struct partial_symbol *), | |
c906108c SS |
272 | compare_psymbols); |
273 | } | |
274 | ||
275 | /* Call sort_block_syms to sort alphabetically the symbols of one block. */ | |
276 | ||
277 | void | |
fba45db2 | 278 | sort_block_syms (register struct block *b) |
c906108c SS |
279 | { |
280 | qsort (&BLOCK_SYM (b, 0), BLOCK_NSYMS (b), | |
281 | sizeof (struct symbol *), compare_symbols); | |
282 | } | |
283 | ||
284 | /* Call sort_symtab_syms to sort alphabetically | |
285 | the symbols of each block of one symtab. */ | |
286 | ||
287 | void | |
fba45db2 | 288 | sort_symtab_syms (register struct symtab *s) |
c906108c SS |
289 | { |
290 | register struct blockvector *bv; | |
291 | int nbl; | |
292 | int i; | |
293 | register struct block *b; | |
294 | ||
295 | if (s == 0) | |
296 | return; | |
297 | bv = BLOCKVECTOR (s); | |
298 | nbl = BLOCKVECTOR_NBLOCKS (bv); | |
299 | for (i = 0; i < nbl; i++) | |
300 | { | |
301 | b = BLOCKVECTOR_BLOCK (bv, i); | |
302 | if (BLOCK_SHOULD_SORT (b)) | |
303 | sort_block_syms (b); | |
304 | } | |
305 | } | |
306 | ||
307 | /* Make a null terminated copy of the string at PTR with SIZE characters in | |
308 | the obstack pointed to by OBSTACKP . Returns the address of the copy. | |
309 | Note that the string at PTR does not have to be null terminated, I.E. it | |
310 | may be part of a larger string and we are only saving a substring. */ | |
311 | ||
312 | char * | |
fba45db2 | 313 | obsavestring (char *ptr, int size, struct obstack *obstackp) |
c906108c SS |
314 | { |
315 | register char *p = (char *) obstack_alloc (obstackp, size + 1); | |
316 | /* Open-coded memcpy--saves function call time. These strings are usually | |
317 | short. FIXME: Is this really still true with a compiler that can | |
318 | inline memcpy? */ | |
319 | { | |
320 | register char *p1 = ptr; | |
321 | register char *p2 = p; | |
322 | char *end = ptr + size; | |
323 | while (p1 != end) | |
324 | *p2++ = *p1++; | |
325 | } | |
326 | p[size] = 0; | |
327 | return p; | |
328 | } | |
329 | ||
330 | /* Concatenate strings S1, S2 and S3; return the new string. Space is found | |
331 | in the obstack pointed to by OBSTACKP. */ | |
332 | ||
333 | char * | |
fba45db2 KB |
334 | obconcat (struct obstack *obstackp, const char *s1, const char *s2, |
335 | const char *s3) | |
c906108c SS |
336 | { |
337 | register int len = strlen (s1) + strlen (s2) + strlen (s3) + 1; | |
338 | register char *val = (char *) obstack_alloc (obstackp, len); | |
339 | strcpy (val, s1); | |
340 | strcat (val, s2); | |
341 | strcat (val, s3); | |
342 | return val; | |
343 | } | |
344 | ||
345 | /* True if we are nested inside psymtab_to_symtab. */ | |
346 | ||
347 | int currently_reading_symtab = 0; | |
348 | ||
349 | static void | |
fba45db2 | 350 | decrement_reading_symtab (void *dummy) |
c906108c SS |
351 | { |
352 | currently_reading_symtab--; | |
353 | } | |
354 | ||
355 | /* Get the symbol table that corresponds to a partial_symtab. | |
356 | This is fast after the first time you do it. In fact, there | |
357 | is an even faster macro PSYMTAB_TO_SYMTAB that does the fast | |
358 | case inline. */ | |
359 | ||
360 | struct symtab * | |
fba45db2 | 361 | psymtab_to_symtab (register struct partial_symtab *pst) |
c906108c SS |
362 | { |
363 | /* If it's been looked up before, return it. */ | |
364 | if (pst->symtab) | |
365 | return pst->symtab; | |
366 | ||
367 | /* If it has not yet been read in, read it. */ | |
368 | if (!pst->readin) | |
c5aa993b | 369 | { |
c906108c SS |
370 | struct cleanup *back_to = make_cleanup (decrement_reading_symtab, NULL); |
371 | currently_reading_symtab++; | |
372 | (*pst->read_symtab) (pst); | |
373 | do_cleanups (back_to); | |
374 | } | |
375 | ||
376 | return pst->symtab; | |
377 | } | |
378 | ||
379 | /* Initialize entry point information for this objfile. */ | |
380 | ||
381 | void | |
fba45db2 | 382 | init_entry_point_info (struct objfile *objfile) |
c906108c SS |
383 | { |
384 | /* Save startup file's range of PC addresses to help blockframe.c | |
385 | decide where the bottom of the stack is. */ | |
386 | ||
c5aa993b | 387 | if (bfd_get_file_flags (objfile->obfd) & EXEC_P) |
c906108c SS |
388 | { |
389 | /* Executable file -- record its entry point so we'll recognize | |
c5aa993b JM |
390 | the startup file because it contains the entry point. */ |
391 | objfile->ei.entry_point = bfd_get_start_address (objfile->obfd); | |
c906108c SS |
392 | } |
393 | else | |
394 | { | |
395 | /* Examination of non-executable.o files. Short-circuit this stuff. */ | |
c5aa993b | 396 | objfile->ei.entry_point = INVALID_ENTRY_POINT; |
c906108c | 397 | } |
c5aa993b JM |
398 | objfile->ei.entry_file_lowpc = INVALID_ENTRY_LOWPC; |
399 | objfile->ei.entry_file_highpc = INVALID_ENTRY_HIGHPC; | |
400 | objfile->ei.entry_func_lowpc = INVALID_ENTRY_LOWPC; | |
401 | objfile->ei.entry_func_highpc = INVALID_ENTRY_HIGHPC; | |
402 | objfile->ei.main_func_lowpc = INVALID_ENTRY_LOWPC; | |
403 | objfile->ei.main_func_highpc = INVALID_ENTRY_HIGHPC; | |
c906108c SS |
404 | } |
405 | ||
406 | /* Get current entry point address. */ | |
407 | ||
408 | CORE_ADDR | |
fba45db2 | 409 | entry_point_address (void) |
c906108c SS |
410 | { |
411 | return symfile_objfile ? symfile_objfile->ei.entry_point : 0; | |
412 | } | |
413 | ||
414 | /* Remember the lowest-addressed loadable section we've seen. | |
415 | This function is called via bfd_map_over_sections. | |
416 | ||
417 | In case of equal vmas, the section with the largest size becomes the | |
418 | lowest-addressed loadable section. | |
419 | ||
420 | If the vmas and sizes are equal, the last section is considered the | |
421 | lowest-addressed loadable section. */ | |
422 | ||
423 | void | |
fba45db2 | 424 | find_lowest_section (bfd *abfd, asection *sect, PTR obj) |
c906108c | 425 | { |
c5aa993b | 426 | asection **lowest = (asection **) obj; |
c906108c SS |
427 | |
428 | if (0 == (bfd_get_section_flags (abfd, sect) & SEC_LOAD)) | |
429 | return; | |
430 | if (!*lowest) | |
431 | *lowest = sect; /* First loadable section */ | |
432 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
433 | *lowest = sect; /* A lower loadable section */ | |
434 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
435 | && (bfd_section_size (abfd, (*lowest)) | |
436 | <= bfd_section_size (abfd, sect))) | |
437 | *lowest = sect; | |
438 | } | |
439 | ||
62557bbc KB |
440 | |
441 | /* Build (allocate and populate) a section_addr_info struct from | |
442 | an existing section table. */ | |
443 | ||
444 | extern struct section_addr_info * | |
445 | build_section_addr_info_from_section_table (const struct section_table *start, | |
446 | const struct section_table *end) | |
447 | { | |
448 | struct section_addr_info *sap; | |
449 | const struct section_table *stp; | |
450 | int oidx; | |
451 | ||
452 | sap = xmalloc (sizeof (struct section_addr_info)); | |
453 | memset (sap, 0, sizeof (struct section_addr_info)); | |
454 | ||
455 | for (stp = start, oidx = 0; stp != end; stp++) | |
456 | { | |
62557bbc KB |
457 | if (stp->the_bfd_section->flags & (SEC_ALLOC | SEC_LOAD) |
458 | && oidx < MAX_SECTIONS) | |
459 | { | |
460 | sap->other[oidx].addr = stp->addr; | |
461 | sap->other[oidx].name = xstrdup (stp->the_bfd_section->name); | |
462 | sap->other[oidx].sectindex = stp->the_bfd_section->index; | |
463 | oidx++; | |
464 | } | |
465 | } | |
466 | ||
467 | return sap; | |
468 | } | |
469 | ||
470 | ||
471 | /* Free all memory allocated by build_section_addr_info_from_section_table. */ | |
472 | ||
473 | extern void | |
474 | free_section_addr_info (struct section_addr_info *sap) | |
475 | { | |
476 | int idx; | |
477 | ||
478 | for (idx = 0; idx < MAX_SECTIONS; idx++) | |
479 | if (sap->other[idx].name) | |
b8c9b27d KB |
480 | xfree (sap->other[idx].name); |
481 | xfree (sap); | |
62557bbc KB |
482 | } |
483 | ||
484 | ||
c906108c SS |
485 | /* Parse the user's idea of an offset for dynamic linking, into our idea |
486 | of how to represent it for fast symbol reading. This is the default | |
487 | version of the sym_fns.sym_offsets function for symbol readers that | |
488 | don't need to do anything special. It allocates a section_offsets table | |
489 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
490 | ||
d4f3574e | 491 | void |
fba45db2 KB |
492 | default_symfile_offsets (struct objfile *objfile, |
493 | struct section_addr_info *addrs) | |
c906108c | 494 | { |
c906108c | 495 | int i; |
b8fbeb18 | 496 | asection *sect = NULL; |
c906108c SS |
497 | |
498 | objfile->num_sections = SECT_OFF_MAX; | |
d4f3574e | 499 | objfile->section_offsets = (struct section_offsets *) |
c5aa993b | 500 | obstack_alloc (&objfile->psymbol_obstack, SIZEOF_SECTION_OFFSETS); |
d4f3574e | 501 | memset (objfile->section_offsets, 0, SIZEOF_SECTION_OFFSETS); |
c906108c | 502 | |
b8fbeb18 EZ |
503 | /* Now calculate offsets for section that were specified by the |
504 | caller. */ | |
2acceee2 JM |
505 | for (i = 0; i < MAX_SECTIONS && addrs->other[i].name; i++) |
506 | { | |
507 | struct other_sections *osp ; | |
508 | ||
509 | osp = &addrs->other[i] ; | |
b8fbeb18 | 510 | if (osp->addr == 0) |
2acceee2 | 511 | continue; |
b8fbeb18 | 512 | |
2acceee2 | 513 | /* Record all sections in offsets */ |
b8fbeb18 EZ |
514 | /* The section_offsets in the objfile are here filled in using |
515 | the BFD index. */ | |
a4c8257b | 516 | (objfile->section_offsets)->offsets[osp->sectindex] = osp->addr; |
2acceee2 | 517 | } |
c906108c | 518 | |
b8fbeb18 EZ |
519 | /* Remember the bfd indexes for the .text, .data, .bss and |
520 | .rodata sections. */ | |
521 | ||
522 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); | |
523 | if (sect) | |
524 | objfile->sect_index_text = sect->index; | |
525 | ||
526 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
527 | if (sect) | |
528 | objfile->sect_index_data = sect->index; | |
529 | ||
530 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
531 | if (sect) | |
532 | objfile->sect_index_bss = sect->index; | |
533 | ||
534 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
535 | if (sect) | |
536 | objfile->sect_index_rodata = sect->index; | |
537 | ||
538 | } | |
c906108c SS |
539 | |
540 | /* Process a symbol file, as either the main file or as a dynamically | |
541 | loaded file. | |
542 | ||
96baa820 JM |
543 | OBJFILE is where the symbols are to be read from. |
544 | ||
545 | ADDR is the address where the text segment was loaded, unless the | |
546 | objfile is the main symbol file, in which case it is zero. | |
547 | ||
548 | MAINLINE is nonzero if this is the main symbol file, or zero if | |
549 | it's an extra symbol file such as dynamically loaded code. | |
550 | ||
551 | VERBO is nonzero if the caller has printed a verbose message about | |
552 | the symbol reading (and complaints can be more terse about it). */ | |
c906108c SS |
553 | |
554 | void | |
fba45db2 KB |
555 | syms_from_objfile (struct objfile *objfile, struct section_addr_info *addrs, |
556 | int mainline, int verbo) | |
c906108c | 557 | { |
2acceee2 JM |
558 | asection *lower_sect; |
559 | asection *sect; | |
560 | CORE_ADDR lower_offset; | |
561 | struct section_addr_info local_addr; | |
c906108c | 562 | struct cleanup *old_chain; |
2acceee2 JM |
563 | int i; |
564 | ||
565 | /* If ADDRS is NULL, initialize the local section_addr_info struct and | |
566 | point ADDRS to it. We now establish the convention that an addr of | |
567 | zero means no load address was specified. */ | |
568 | ||
569 | if (addrs == NULL) | |
570 | { | |
571 | memset (&local_addr, 0, sizeof (local_addr)); | |
572 | addrs = &local_addr; | |
573 | } | |
c906108c SS |
574 | |
575 | init_entry_point_info (objfile); | |
576 | find_sym_fns (objfile); | |
577 | ||
578 | /* Make sure that partially constructed symbol tables will be cleaned up | |
579 | if an error occurs during symbol reading. */ | |
74b7792f | 580 | old_chain = make_cleanup_free_objfile (objfile); |
c906108c | 581 | |
c5aa993b | 582 | if (mainline) |
c906108c SS |
583 | { |
584 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 585 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 586 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
587 | |
588 | /* Since no error yet, throw away the old symbol table. */ | |
589 | ||
590 | if (symfile_objfile != NULL) | |
591 | { | |
592 | free_objfile (symfile_objfile); | |
593 | symfile_objfile = NULL; | |
594 | } | |
595 | ||
596 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
597 | If the user wants to get rid of them, they should do "symbol-file" |
598 | without arguments first. Not sure this is the best behavior | |
599 | (PR 2207). */ | |
c906108c | 600 | |
c5aa993b | 601 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
602 | } |
603 | ||
604 | /* Convert addr into an offset rather than an absolute address. | |
605 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 606 | and assume that <addr> is where that got loaded. |
c906108c | 607 | |
53a5351d JM |
608 | We no longer warn if the lowest section is not a text segment (as |
609 | happens for the PA64 port. */ | |
e7cf9df1 | 610 | if (!mainline) |
c906108c | 611 | { |
2acceee2 JM |
612 | /* Find lowest loadable section to be used as starting point for |
613 | continguous sections. FIXME!! won't work without call to find | |
614 | .text first, but this assumes text is lowest section. */ | |
615 | lower_sect = bfd_get_section_by_name (objfile->obfd, ".text"); | |
616 | if (lower_sect == NULL) | |
c906108c | 617 | bfd_map_over_sections (objfile->obfd, find_lowest_section, |
2acceee2 JM |
618 | (PTR) &lower_sect); |
619 | if (lower_sect == NULL) | |
c906108c SS |
620 | warning ("no loadable sections found in added symbol-file %s", |
621 | objfile->name); | |
b8fbeb18 EZ |
622 | else |
623 | if ((bfd_get_section_flags (objfile->obfd, lower_sect) & SEC_CODE) == 0) | |
624 | warning ("Lowest section in %s is %s at %s", | |
625 | objfile->name, | |
626 | bfd_section_name (objfile->obfd, lower_sect), | |
627 | paddr (bfd_section_vma (objfile->obfd, lower_sect))); | |
2acceee2 JM |
628 | if (lower_sect != NULL) |
629 | lower_offset = bfd_section_vma (objfile->obfd, lower_sect); | |
630 | else | |
631 | lower_offset = 0; | |
632 | ||
633 | /* Calculate offsets for the loadable sections. | |
634 | FIXME! Sections must be in order of increasing loadable section | |
635 | so that contiguous sections can use the lower-offset!!! | |
636 | ||
637 | Adjust offsets if the segments are not contiguous. | |
638 | If the section is contiguous, its offset should be set to | |
639 | the offset of the highest loadable section lower than it | |
640 | (the loadable section directly below it in memory). | |
641 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
642 | ||
e7cf9df1 | 643 | /* Calculate offsets for sections. */ |
2acceee2 JM |
644 | for (i=0 ; i < MAX_SECTIONS && addrs->other[i].name; i++) |
645 | { | |
e7cf9df1 | 646 | if (addrs->other[i].addr != 0) |
2acceee2 | 647 | { |
e7cf9df1 | 648 | sect = bfd_get_section_by_name (objfile->obfd, addrs->other[i].name); |
2acceee2 JM |
649 | if (sect) |
650 | { | |
651 | addrs->other[i].addr -= bfd_section_vma (objfile->obfd, sect); | |
652 | lower_offset = addrs->other[i].addr; | |
e7cf9df1 | 653 | /* This is the index used by BFD. */ |
2acceee2 JM |
654 | addrs->other[i].sectindex = sect->index ; |
655 | } | |
656 | else | |
657 | { | |
658 | warning ("section %s not found in %s", addrs->other[i].name, | |
659 | objfile->name); | |
660 | addrs->other[i].addr = 0; | |
661 | } | |
662 | } | |
663 | else | |
664 | addrs->other[i].addr = lower_offset; | |
665 | } | |
c906108c SS |
666 | } |
667 | ||
668 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
669 | appear for this new file, and record how verbose to be, then do the | |
670 | initial symbol reading for this file. */ | |
671 | ||
c5aa993b | 672 | (*objfile->sf->sym_init) (objfile); |
c906108c SS |
673 | clear_complaints (1, verbo); |
674 | ||
2acceee2 | 675 | (*objfile->sf->sym_offsets) (objfile, addrs); |
c906108c SS |
676 | |
677 | #ifndef IBM6000_TARGET | |
678 | /* This is a SVR4/SunOS specific hack, I think. In any event, it | |
679 | screws RS/6000. sym_offsets should be doing this sort of thing, | |
680 | because it knows the mapping between bfd sections and | |
681 | section_offsets. */ | |
682 | /* This is a hack. As far as I can tell, section offsets are not | |
683 | target dependent. They are all set to addr with a couple of | |
684 | exceptions. The exceptions are sysvr4 shared libraries, whose | |
685 | offsets are kept in solib structures anyway and rs6000 xcoff | |
686 | which handles shared libraries in a completely unique way. | |
687 | ||
688 | Section offsets are built similarly, except that they are built | |
689 | by adding addr in all cases because there is no clear mapping | |
690 | from section_offsets into actual sections. Note that solib.c | |
96baa820 | 691 | has a different algorithm for finding section offsets. |
c906108c SS |
692 | |
693 | These should probably all be collapsed into some target | |
694 | independent form of shared library support. FIXME. */ | |
695 | ||
2acceee2 | 696 | if (addrs) |
c906108c SS |
697 | { |
698 | struct obj_section *s; | |
699 | ||
2acceee2 JM |
700 | /* Map section offsets in "addr" back to the object's |
701 | sections by comparing the section names with bfd's | |
702 | section names. Then adjust the section address by | |
703 | the offset. */ /* for gdb/13815 */ | |
704 | ||
96baa820 | 705 | ALL_OBJFILE_OSECTIONS (objfile, s) |
c906108c | 706 | { |
2acceee2 JM |
707 | CORE_ADDR s_addr = 0; |
708 | int i; | |
709 | ||
62557bbc KB |
710 | for (i = 0; |
711 | !s_addr && i < MAX_SECTIONS && addrs->other[i].name; | |
712 | i++) | |
2acceee2 JM |
713 | if (strcmp (s->the_bfd_section->name, addrs->other[i].name) == 0) |
714 | s_addr = addrs->other[i].addr; /* end added for gdb/13815 */ | |
715 | ||
c906108c | 716 | s->addr -= s->offset; |
2acceee2 | 717 | s->addr += s_addr; |
c906108c | 718 | s->endaddr -= s->offset; |
2acceee2 JM |
719 | s->endaddr += s_addr; |
720 | s->offset += s_addr; | |
c906108c SS |
721 | } |
722 | } | |
723 | #endif /* not IBM6000_TARGET */ | |
724 | ||
96baa820 | 725 | (*objfile->sf->sym_read) (objfile, mainline); |
c906108c SS |
726 | |
727 | if (!have_partial_symbols () && !have_full_symbols ()) | |
728 | { | |
729 | wrap_here (""); | |
730 | printf_filtered ("(no debugging symbols found)..."); | |
731 | wrap_here (""); | |
732 | } | |
733 | ||
734 | /* Don't allow char * to have a typename (else would get caddr_t). | |
735 | Ditto void *. FIXME: Check whether this is now done by all the | |
736 | symbol readers themselves (many of them now do), and if so remove | |
737 | it from here. */ | |
738 | ||
739 | TYPE_NAME (lookup_pointer_type (builtin_type_char)) = 0; | |
740 | TYPE_NAME (lookup_pointer_type (builtin_type_void)) = 0; | |
741 | ||
742 | /* Mark the objfile has having had initial symbol read attempted. Note | |
743 | that this does not mean we found any symbols... */ | |
744 | ||
c5aa993b | 745 | objfile->flags |= OBJF_SYMS; |
c906108c SS |
746 | |
747 | /* Discard cleanups as symbol reading was successful. */ | |
748 | ||
749 | discard_cleanups (old_chain); | |
750 | ||
96baa820 | 751 | /* Call this after reading in a new symbol table to give target |
38c2ef12 | 752 | dependent code a crack at the new symbols. For instance, this |
96baa820 JM |
753 | could be used to update the values of target-specific symbols GDB |
754 | needs to keep track of (such as _sigtramp, or whatever). */ | |
c906108c SS |
755 | |
756 | TARGET_SYMFILE_POSTREAD (objfile); | |
757 | } | |
758 | ||
759 | /* Perform required actions after either reading in the initial | |
760 | symbols for a new objfile, or mapping in the symbols from a reusable | |
761 | objfile. */ | |
c5aa993b | 762 | |
c906108c | 763 | void |
fba45db2 | 764 | new_symfile_objfile (struct objfile *objfile, int mainline, int verbo) |
c906108c SS |
765 | { |
766 | ||
767 | /* If this is the main symbol file we have to clean up all users of the | |
768 | old main symbol file. Otherwise it is sufficient to fixup all the | |
769 | breakpoints that may have been redefined by this symbol file. */ | |
770 | if (mainline) | |
771 | { | |
772 | /* OK, make it the "real" symbol file. */ | |
773 | symfile_objfile = objfile; | |
774 | ||
775 | clear_symtab_users (); | |
776 | } | |
777 | else | |
778 | { | |
779 | breakpoint_re_set (); | |
780 | } | |
781 | ||
782 | /* We're done reading the symbol file; finish off complaints. */ | |
783 | clear_complaints (0, verbo); | |
784 | } | |
785 | ||
786 | /* Process a symbol file, as either the main file or as a dynamically | |
787 | loaded file. | |
788 | ||
789 | NAME is the file name (which will be tilde-expanded and made | |
790 | absolute herein) (but we don't free or modify NAME itself). | |
791 | FROM_TTY says how verbose to be. MAINLINE specifies whether this | |
792 | is the main symbol file, or whether it's an extra symbol file such | |
793 | as dynamically loaded code. If !mainline, ADDR is the address | |
794 | where the text segment was loaded. | |
795 | ||
c906108c SS |
796 | Upon success, returns a pointer to the objfile that was added. |
797 | Upon failure, jumps back to command level (never returns). */ | |
798 | ||
799 | struct objfile * | |
fba45db2 KB |
800 | symbol_file_add (char *name, int from_tty, struct section_addr_info *addrs, |
801 | int mainline, int flags) | |
c906108c SS |
802 | { |
803 | struct objfile *objfile; | |
804 | struct partial_symtab *psymtab; | |
805 | bfd *abfd; | |
806 | ||
807 | /* Open a bfd for the file, and give user a chance to burp if we'd be | |
808 | interactively wiping out any existing symbols. */ | |
809 | ||
810 | abfd = symfile_bfd_open (name); | |
811 | ||
812 | if ((have_full_symbols () || have_partial_symbols ()) | |
813 | && mainline | |
814 | && from_tty | |
815 | && !query ("Load new symbol table from \"%s\"? ", name)) | |
c5aa993b | 816 | error ("Not confirmed."); |
c906108c | 817 | |
2df3850c | 818 | objfile = allocate_objfile (abfd, flags); |
c906108c SS |
819 | |
820 | /* If the objfile uses a mapped symbol file, and we have a psymtab for | |
821 | it, then skip reading any symbols at this time. */ | |
822 | ||
c5aa993b | 823 | if ((objfile->flags & OBJF_MAPPED) && (objfile->flags & OBJF_SYMS)) |
c906108c SS |
824 | { |
825 | /* We mapped in an existing symbol table file that already has had | |
c5aa993b JM |
826 | initial symbol reading performed, so we can skip that part. Notify |
827 | the user that instead of reading the symbols, they have been mapped. | |
828 | */ | |
c906108c SS |
829 | if (from_tty || info_verbose) |
830 | { | |
831 | printf_filtered ("Mapped symbols for %s...", name); | |
832 | wrap_here (""); | |
833 | gdb_flush (gdb_stdout); | |
834 | } | |
835 | init_entry_point_info (objfile); | |
836 | find_sym_fns (objfile); | |
837 | } | |
838 | else | |
839 | { | |
840 | /* We either created a new mapped symbol table, mapped an existing | |
c5aa993b JM |
841 | symbol table file which has not had initial symbol reading |
842 | performed, or need to read an unmapped symbol table. */ | |
c906108c SS |
843 | if (from_tty || info_verbose) |
844 | { | |
845 | if (pre_add_symbol_hook) | |
846 | pre_add_symbol_hook (name); | |
847 | else | |
848 | { | |
849 | printf_filtered ("Reading symbols from %s...", name); | |
850 | wrap_here (""); | |
851 | gdb_flush (gdb_stdout); | |
852 | } | |
853 | } | |
2acceee2 | 854 | syms_from_objfile (objfile, addrs, mainline, from_tty); |
c906108c SS |
855 | } |
856 | ||
857 | /* We now have at least a partial symbol table. Check to see if the | |
858 | user requested that all symbols be read on initial access via either | |
859 | the gdb startup command line or on a per symbol file basis. Expand | |
860 | all partial symbol tables for this objfile if so. */ | |
861 | ||
2acceee2 | 862 | if ((flags & OBJF_READNOW) || readnow_symbol_files) |
c906108c SS |
863 | { |
864 | if (from_tty || info_verbose) | |
865 | { | |
866 | printf_filtered ("expanding to full symbols..."); | |
867 | wrap_here (""); | |
868 | gdb_flush (gdb_stdout); | |
869 | } | |
870 | ||
c5aa993b | 871 | for (psymtab = objfile->psymtabs; |
c906108c | 872 | psymtab != NULL; |
c5aa993b | 873 | psymtab = psymtab->next) |
c906108c SS |
874 | { |
875 | psymtab_to_symtab (psymtab); | |
876 | } | |
877 | } | |
878 | ||
879 | if (from_tty || info_verbose) | |
880 | { | |
881 | if (post_add_symbol_hook) | |
c5aa993b | 882 | post_add_symbol_hook (); |
c906108c | 883 | else |
c5aa993b JM |
884 | { |
885 | printf_filtered ("done.\n"); | |
886 | gdb_flush (gdb_stdout); | |
887 | } | |
c906108c SS |
888 | } |
889 | ||
890 | new_symfile_objfile (objfile, mainline, from_tty); | |
891 | ||
11cf8741 JM |
892 | if (target_new_objfile_hook) |
893 | target_new_objfile_hook (objfile); | |
c906108c SS |
894 | |
895 | return (objfile); | |
896 | } | |
897 | ||
d7db6da9 FN |
898 | /* Call symbol_file_add() with default values and update whatever is |
899 | affected by the loading of a new main(). | |
900 | Used when the file is supplied in the gdb command line | |
901 | and by some targets with special loading requirements. | |
902 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
903 | argument for the switches that can only be specified in the symbol_file | |
904 | command itself. */ | |
1adeb98a FN |
905 | |
906 | void | |
907 | symbol_file_add_main (char *args, int from_tty) | |
908 | { | |
d7db6da9 FN |
909 | symbol_file_add_main_1 (args, from_tty, 0); |
910 | } | |
911 | ||
912 | static void | |
913 | symbol_file_add_main_1 (char *args, int from_tty, int flags) | |
914 | { | |
915 | symbol_file_add (args, from_tty, NULL, 1, flags); | |
916 | ||
917 | #ifdef HPUXHPPA | |
918 | RESET_HP_UX_GLOBALS (); | |
919 | #endif | |
920 | ||
921 | /* Getting new symbols may change our opinion about | |
922 | what is frameless. */ | |
923 | reinit_frame_cache (); | |
924 | ||
925 | set_initial_language (); | |
1adeb98a FN |
926 | } |
927 | ||
928 | void | |
929 | symbol_file_clear (int from_tty) | |
930 | { | |
931 | if ((have_full_symbols () || have_partial_symbols ()) | |
932 | && from_tty | |
933 | && !query ("Discard symbol table from `%s'? ", | |
934 | symfile_objfile->name)) | |
935 | error ("Not confirmed."); | |
936 | free_all_objfiles (); | |
937 | ||
938 | /* solib descriptors may have handles to objfiles. Since their | |
939 | storage has just been released, we'd better wipe the solib | |
940 | descriptors as well. | |
941 | */ | |
942 | #if defined(SOLIB_RESTART) | |
943 | SOLIB_RESTART (); | |
944 | #endif | |
945 | ||
946 | symfile_objfile = NULL; | |
947 | if (from_tty) | |
948 | printf_unfiltered ("No symbol file now.\n"); | |
949 | #ifdef HPUXHPPA | |
950 | RESET_HP_UX_GLOBALS (); | |
951 | #endif | |
952 | } | |
953 | ||
c906108c SS |
954 | /* This is the symbol-file command. Read the file, analyze its |
955 | symbols, and add a struct symtab to a symtab list. The syntax of | |
956 | the command is rather bizarre--(1) buildargv implements various | |
957 | quoting conventions which are undocumented and have little or | |
958 | nothing in common with the way things are quoted (or not quoted) | |
959 | elsewhere in GDB, (2) options are used, which are not generally | |
960 | used in GDB (perhaps "set mapped on", "set readnow on" would be | |
961 | better), (3) the order of options matters, which is contrary to GNU | |
962 | conventions (because it is confusing and inconvenient). */ | |
4da95fc4 EZ |
963 | /* Note: ezannoni 2000-04-17. This function used to have support for |
964 | rombug (see remote-os9k.c). It consisted of a call to target_link() | |
965 | (target.c) to get the address of the text segment from the target, | |
966 | and pass that to symbol_file_add(). This is no longer supported. */ | |
c906108c SS |
967 | |
968 | void | |
fba45db2 | 969 | symbol_file_command (char *args, int from_tty) |
c906108c SS |
970 | { |
971 | char **argv; | |
972 | char *name = NULL; | |
c906108c | 973 | struct cleanup *cleanups; |
2df3850c | 974 | int flags = OBJF_USERLOADED; |
c906108c SS |
975 | |
976 | dont_repeat (); | |
977 | ||
978 | if (args == NULL) | |
979 | { | |
1adeb98a | 980 | symbol_file_clear (from_tty); |
c906108c SS |
981 | } |
982 | else | |
983 | { | |
984 | if ((argv = buildargv (args)) == NULL) | |
985 | { | |
986 | nomem (0); | |
987 | } | |
7a292a7a | 988 | cleanups = make_cleanup_freeargv (argv); |
c906108c SS |
989 | while (*argv != NULL) |
990 | { | |
991 | if (STREQ (*argv, "-mapped")) | |
4da95fc4 EZ |
992 | flags |= OBJF_MAPPED; |
993 | else | |
994 | if (STREQ (*argv, "-readnow")) | |
2acceee2 | 995 | flags |= OBJF_READNOW; |
4da95fc4 EZ |
996 | else |
997 | if (**argv == '-') | |
998 | error ("unknown option `%s'", *argv); | |
c5aa993b | 999 | else |
c5aa993b | 1000 | { |
4da95fc4 | 1001 | name = *argv; |
c906108c | 1002 | |
d7db6da9 | 1003 | symbol_file_add_main_1 (name, from_tty, flags); |
4da95fc4 | 1004 | } |
c906108c SS |
1005 | argv++; |
1006 | } | |
1007 | ||
1008 | if (name == NULL) | |
1009 | { | |
1010 | error ("no symbol file name was specified"); | |
1011 | } | |
c906108c SS |
1012 | do_cleanups (cleanups); |
1013 | } | |
1014 | } | |
1015 | ||
1016 | /* Set the initial language. | |
1017 | ||
1018 | A better solution would be to record the language in the psymtab when reading | |
1019 | partial symbols, and then use it (if known) to set the language. This would | |
1020 | be a win for formats that encode the language in an easily discoverable place, | |
1021 | such as DWARF. For stabs, we can jump through hoops looking for specially | |
1022 | named symbols or try to intuit the language from the specific type of stabs | |
1023 | we find, but we can't do that until later when we read in full symbols. | |
1024 | FIXME. */ | |
1025 | ||
1026 | static void | |
fba45db2 | 1027 | set_initial_language (void) |
c906108c SS |
1028 | { |
1029 | struct partial_symtab *pst; | |
c5aa993b | 1030 | enum language lang = language_unknown; |
c906108c SS |
1031 | |
1032 | pst = find_main_psymtab (); | |
1033 | if (pst != NULL) | |
1034 | { | |
c5aa993b | 1035 | if (pst->filename != NULL) |
c906108c | 1036 | { |
c5aa993b JM |
1037 | lang = deduce_language_from_filename (pst->filename); |
1038 | } | |
c906108c SS |
1039 | if (lang == language_unknown) |
1040 | { | |
c5aa993b JM |
1041 | /* Make C the default language */ |
1042 | lang = language_c; | |
c906108c SS |
1043 | } |
1044 | set_language (lang); | |
1045 | expected_language = current_language; /* Don't warn the user */ | |
1046 | } | |
1047 | } | |
1048 | ||
1049 | /* Open file specified by NAME and hand it off to BFD for preliminary | |
1050 | analysis. Result is a newly initialized bfd *, which includes a newly | |
1051 | malloc'd` copy of NAME (tilde-expanded and made absolute). | |
1052 | In case of trouble, error() is called. */ | |
1053 | ||
1054 | bfd * | |
fba45db2 | 1055 | symfile_bfd_open (char *name) |
c906108c SS |
1056 | { |
1057 | bfd *sym_bfd; | |
1058 | int desc; | |
1059 | char *absolute_name; | |
1060 | ||
1061 | ||
1062 | ||
1063 | name = tilde_expand (name); /* Returns 1st new malloc'd copy */ | |
1064 | ||
1065 | /* Look down path for it, allocate 2nd new malloc'd copy. */ | |
1066 | desc = openp (getenv ("PATH"), 1, name, O_RDONLY | O_BINARY, 0, &absolute_name); | |
608506ed | 1067 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
c906108c SS |
1068 | if (desc < 0) |
1069 | { | |
1070 | char *exename = alloca (strlen (name) + 5); | |
1071 | strcat (strcpy (exename, name), ".exe"); | |
1072 | desc = openp (getenv ("PATH"), 1, exename, O_RDONLY | O_BINARY, | |
c5aa993b | 1073 | 0, &absolute_name); |
c906108c SS |
1074 | } |
1075 | #endif | |
1076 | if (desc < 0) | |
1077 | { | |
b8c9b27d | 1078 | make_cleanup (xfree, name); |
c906108c SS |
1079 | perror_with_name (name); |
1080 | } | |
b8c9b27d | 1081 | xfree (name); /* Free 1st new malloc'd copy */ |
c906108c | 1082 | name = absolute_name; /* Keep 2nd malloc'd copy in bfd */ |
c5aa993b | 1083 | /* It'll be freed in free_objfile(). */ |
c906108c SS |
1084 | |
1085 | sym_bfd = bfd_fdopenr (name, gnutarget, desc); | |
1086 | if (!sym_bfd) | |
1087 | { | |
1088 | close (desc); | |
b8c9b27d | 1089 | make_cleanup (xfree, name); |
c906108c SS |
1090 | error ("\"%s\": can't open to read symbols: %s.", name, |
1091 | bfd_errmsg (bfd_get_error ())); | |
1092 | } | |
1093 | sym_bfd->cacheable = true; | |
1094 | ||
1095 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1096 | { | |
1097 | /* FIXME: should be checking for errors from bfd_close (for one thing, | |
c5aa993b JM |
1098 | on error it does not free all the storage associated with the |
1099 | bfd). */ | |
c906108c | 1100 | bfd_close (sym_bfd); /* This also closes desc */ |
b8c9b27d | 1101 | make_cleanup (xfree, name); |
c906108c SS |
1102 | error ("\"%s\": can't read symbols: %s.", name, |
1103 | bfd_errmsg (bfd_get_error ())); | |
1104 | } | |
1105 | return (sym_bfd); | |
1106 | } | |
1107 | ||
1108 | /* Link a new symtab_fns into the global symtab_fns list. Called on gdb | |
1109 | startup by the _initialize routine in each object file format reader, | |
1110 | to register information about each format the the reader is prepared | |
1111 | to handle. */ | |
1112 | ||
1113 | void | |
fba45db2 | 1114 | add_symtab_fns (struct sym_fns *sf) |
c906108c SS |
1115 | { |
1116 | sf->next = symtab_fns; | |
1117 | symtab_fns = sf; | |
1118 | } | |
1119 | ||
1120 | ||
1121 | /* Initialize to read symbols from the symbol file sym_bfd. It either | |
1122 | returns or calls error(). The result is an initialized struct sym_fns | |
1123 | in the objfile structure, that contains cached information about the | |
1124 | symbol file. */ | |
1125 | ||
1126 | static void | |
fba45db2 | 1127 | find_sym_fns (struct objfile *objfile) |
c906108c SS |
1128 | { |
1129 | struct sym_fns *sf; | |
c5aa993b JM |
1130 | enum bfd_flavour our_flavour = bfd_get_flavour (objfile->obfd); |
1131 | char *our_target = bfd_get_target (objfile->obfd); | |
c906108c | 1132 | |
c906108c SS |
1133 | /* Special kludge for apollo. See dstread.c. */ |
1134 | if (STREQN (our_target, "apollo", 6)) | |
c5aa993b | 1135 | our_flavour = (enum bfd_flavour) -2; |
c906108c | 1136 | |
c5aa993b | 1137 | for (sf = symtab_fns; sf != NULL; sf = sf->next) |
c906108c | 1138 | { |
c5aa993b | 1139 | if (our_flavour == sf->sym_flavour) |
c906108c | 1140 | { |
c5aa993b | 1141 | objfile->sf = sf; |
c906108c SS |
1142 | return; |
1143 | } | |
1144 | } | |
1145 | error ("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown.", | |
c5aa993b | 1146 | bfd_get_target (objfile->obfd)); |
c906108c SS |
1147 | } |
1148 | \f | |
1149 | /* This function runs the load command of our current target. */ | |
1150 | ||
1151 | static void | |
fba45db2 | 1152 | load_command (char *arg, int from_tty) |
c906108c SS |
1153 | { |
1154 | if (arg == NULL) | |
1155 | arg = get_exec_file (1); | |
1156 | target_load (arg, from_tty); | |
1157 | } | |
1158 | ||
1159 | /* This version of "load" should be usable for any target. Currently | |
1160 | it is just used for remote targets, not inftarg.c or core files, | |
1161 | on the theory that only in that case is it useful. | |
1162 | ||
1163 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1164 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1165 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1166 | performance compares. */ | |
917317f4 JM |
1167 | |
1168 | static int download_write_size = 512; | |
1169 | static int validate_download = 0; | |
1170 | ||
c906108c | 1171 | void |
917317f4 | 1172 | generic_load (char *args, int from_tty) |
c906108c | 1173 | { |
c906108c SS |
1174 | asection *s; |
1175 | bfd *loadfile_bfd; | |
1176 | time_t start_time, end_time; /* Start and end times of download */ | |
1177 | unsigned long data_count = 0; /* Number of bytes transferred to memory */ | |
917317f4 JM |
1178 | unsigned long write_count = 0; /* Number of writes needed. */ |
1179 | unsigned long load_offset; /* offset to add to vma for each section */ | |
1180 | char *filename; | |
1181 | struct cleanup *old_cleanups; | |
1182 | char *offptr; | |
c2d11a7d JM |
1183 | CORE_ADDR total_size = 0; |
1184 | CORE_ADDR total_sent = 0; | |
917317f4 JM |
1185 | |
1186 | /* Parse the input argument - the user can specify a load offset as | |
1187 | a second argument. */ | |
1188 | filename = xmalloc (strlen (args) + 1); | |
b8c9b27d | 1189 | old_cleanups = make_cleanup (xfree, filename); |
917317f4 JM |
1190 | strcpy (filename, args); |
1191 | offptr = strchr (filename, ' '); | |
1192 | if (offptr != NULL) | |
1193 | { | |
1194 | char *endptr; | |
1195 | load_offset = strtoul (offptr, &endptr, 0); | |
1196 | if (offptr == endptr) | |
1197 | error ("Invalid download offset:%s\n", offptr); | |
1198 | *offptr = '\0'; | |
1199 | } | |
c906108c SS |
1200 | else |
1201 | load_offset = 0; | |
1202 | ||
917317f4 | 1203 | /* Open the file for loading. */ |
c906108c SS |
1204 | loadfile_bfd = bfd_openr (filename, gnutarget); |
1205 | if (loadfile_bfd == NULL) | |
1206 | { | |
1207 | perror_with_name (filename); | |
1208 | return; | |
1209 | } | |
917317f4 | 1210 | |
c906108c SS |
1211 | /* FIXME: should be checking for errors from bfd_close (for one thing, |
1212 | on error it does not free all the storage associated with the | |
1213 | bfd). */ | |
5c65bbb6 | 1214 | make_cleanup_bfd_close (loadfile_bfd); |
c906108c | 1215 | |
c5aa993b | 1216 | if (!bfd_check_format (loadfile_bfd, bfd_object)) |
c906108c SS |
1217 | { |
1218 | error ("\"%s\" is not an object file: %s", filename, | |
1219 | bfd_errmsg (bfd_get_error ())); | |
1220 | } | |
c5aa993b | 1221 | |
c2d11a7d JM |
1222 | for (s = loadfile_bfd->sections; s; s = s->next) |
1223 | if (s->flags & SEC_LOAD) | |
1224 | total_size += bfd_get_section_size_before_reloc (s); | |
1225 | ||
c906108c SS |
1226 | start_time = time (NULL); |
1227 | ||
c5aa993b JM |
1228 | for (s = loadfile_bfd->sections; s; s = s->next) |
1229 | { | |
1230 | if (s->flags & SEC_LOAD) | |
1231 | { | |
917317f4 | 1232 | CORE_ADDR size = bfd_get_section_size_before_reloc (s); |
c5aa993b JM |
1233 | if (size > 0) |
1234 | { | |
1235 | char *buffer; | |
1236 | struct cleanup *old_chain; | |
917317f4 JM |
1237 | CORE_ADDR lma = s->lma + load_offset; |
1238 | CORE_ADDR block_size; | |
c5aa993b | 1239 | int err; |
917317f4 JM |
1240 | const char *sect_name = bfd_get_section_name (loadfile_bfd, s); |
1241 | CORE_ADDR sent; | |
c5aa993b | 1242 | |
917317f4 JM |
1243 | if (download_write_size > 0 && size > download_write_size) |
1244 | block_size = download_write_size; | |
1245 | else | |
1246 | block_size = size; | |
c5aa993b JM |
1247 | |
1248 | buffer = xmalloc (size); | |
b8c9b27d | 1249 | old_chain = make_cleanup (xfree, buffer); |
c5aa993b | 1250 | |
c5aa993b JM |
1251 | /* Is this really necessary? I guess it gives the user something |
1252 | to look at during a long download. */ | |
8b93c638 JM |
1253 | #ifdef UI_OUT |
1254 | ui_out_message (uiout, 0, "Loading section %s, size 0x%s lma 0x%s\n", | |
1255 | sect_name, paddr_nz (size), paddr_nz (lma)); | |
1256 | #else | |
917317f4 JM |
1257 | fprintf_unfiltered (gdb_stdout, |
1258 | "Loading section %s, size 0x%s lma 0x%s\n", | |
1259 | sect_name, paddr_nz (size), paddr_nz (lma)); | |
8b93c638 | 1260 | #endif |
c5aa993b JM |
1261 | |
1262 | bfd_get_section_contents (loadfile_bfd, s, buffer, 0, size); | |
1263 | ||
c5aa993b JM |
1264 | sent = 0; |
1265 | do | |
1266 | { | |
917317f4 JM |
1267 | CORE_ADDR len; |
1268 | CORE_ADDR this_transfer = size - sent; | |
1269 | if (this_transfer >= block_size) | |
1270 | this_transfer = block_size; | |
1271 | len = target_write_memory_partial (lma, buffer, | |
1272 | this_transfer, &err); | |
c5aa993b JM |
1273 | if (err) |
1274 | break; | |
917317f4 JM |
1275 | if (validate_download) |
1276 | { | |
1277 | /* Broken memories and broken monitors manifest | |
1278 | themselves here when bring new computers to | |
1279 | life. This doubles already slow downloads. */ | |
1280 | /* NOTE: cagney/1999-10-18: A more efficient | |
1281 | implementation might add a verify_memory() | |
1282 | method to the target vector and then use | |
1283 | that. remote.c could implement that method | |
1284 | using the ``qCRC'' packet. */ | |
1285 | char *check = xmalloc (len); | |
b8c9b27d | 1286 | struct cleanup *verify_cleanups = make_cleanup (xfree, check); |
917317f4 JM |
1287 | if (target_read_memory (lma, check, len) != 0) |
1288 | error ("Download verify read failed at 0x%s", | |
1289 | paddr (lma)); | |
1290 | if (memcmp (buffer, check, len) != 0) | |
1291 | error ("Download verify compare failed at 0x%s", | |
1292 | paddr (lma)); | |
1293 | do_cleanups (verify_cleanups); | |
1294 | } | |
c5aa993b JM |
1295 | data_count += len; |
1296 | lma += len; | |
1297 | buffer += len; | |
917317f4 JM |
1298 | write_count += 1; |
1299 | sent += len; | |
c2d11a7d | 1300 | total_sent += len; |
917317f4 JM |
1301 | if (quit_flag |
1302 | || (ui_load_progress_hook != NULL | |
1303 | && ui_load_progress_hook (sect_name, sent))) | |
1304 | error ("Canceled the download"); | |
c2d11a7d JM |
1305 | |
1306 | if (show_load_progress != NULL) | |
1307 | show_load_progress (sect_name, sent, size, total_sent, total_size); | |
917317f4 JM |
1308 | } |
1309 | while (sent < size); | |
c5aa993b JM |
1310 | |
1311 | if (err != 0) | |
917317f4 | 1312 | error ("Memory access error while loading section %s.", sect_name); |
c906108c | 1313 | |
c5aa993b JM |
1314 | do_cleanups (old_chain); |
1315 | } | |
1316 | } | |
c906108c SS |
1317 | } |
1318 | ||
1319 | end_time = time (NULL); | |
1320 | { | |
917317f4 | 1321 | CORE_ADDR entry; |
c5aa993b | 1322 | entry = bfd_get_start_address (loadfile_bfd); |
8b93c638 JM |
1323 | #ifdef UI_OUT |
1324 | ui_out_text (uiout, "Start address "); | |
1325 | ui_out_field_fmt (uiout, "address", "0x%s" , paddr_nz (entry)); | |
1326 | ui_out_text (uiout, ", load size "); | |
1327 | ui_out_field_fmt (uiout, "load-size", "%ld" , data_count); | |
1328 | ui_out_text (uiout, "\n"); | |
1329 | ||
1330 | #else | |
917317f4 JM |
1331 | fprintf_unfiltered (gdb_stdout, |
1332 | "Start address 0x%s , load size %ld\n", | |
1333 | paddr_nz (entry), data_count); | |
8b93c638 | 1334 | #endif |
c906108c SS |
1335 | /* We were doing this in remote-mips.c, I suspect it is right |
1336 | for other targets too. */ | |
1337 | write_pc (entry); | |
1338 | } | |
1339 | ||
1340 | /* FIXME: are we supposed to call symbol_file_add or not? According to | |
1341 | a comment from remote-mips.c (where a call to symbol_file_add was | |
1342 | commented out), making the call confuses GDB if more than one file is | |
1343 | loaded in. remote-nindy.c had no call to symbol_file_add, but remote-vx.c | |
1344 | does. */ | |
1345 | ||
917317f4 JM |
1346 | print_transfer_performance (gdb_stdout, data_count, write_count, |
1347 | end_time - start_time); | |
c906108c SS |
1348 | |
1349 | do_cleanups (old_cleanups); | |
1350 | } | |
1351 | ||
1352 | /* Report how fast the transfer went. */ | |
1353 | ||
917317f4 JM |
1354 | /* DEPRECATED: cagney/1999-10-18: report_transfer_performance is being |
1355 | replaced by print_transfer_performance (with a very different | |
1356 | function signature). */ | |
1357 | ||
c906108c | 1358 | void |
fba45db2 KB |
1359 | report_transfer_performance (unsigned long data_count, time_t start_time, |
1360 | time_t end_time) | |
c906108c | 1361 | { |
917317f4 JM |
1362 | print_transfer_performance (gdb_stdout, data_count, end_time - start_time, 0); |
1363 | } | |
1364 | ||
1365 | void | |
d9fcf2fb | 1366 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
1367 | unsigned long data_count, |
1368 | unsigned long write_count, | |
1369 | unsigned long time_count) | |
1370 | { | |
8b93c638 JM |
1371 | #ifdef UI_OUT |
1372 | ui_out_text (uiout, "Transfer rate: "); | |
1373 | if (time_count > 0) | |
1374 | { | |
1375 | ui_out_field_fmt (uiout, "transfer-rate", "%ld", | |
1376 | (data_count * 8) / time_count); | |
1377 | ui_out_text (uiout, " bits/sec"); | |
1378 | } | |
1379 | else | |
1380 | { | |
1381 | ui_out_field_fmt (uiout, "transferred-bits", "%ld", (data_count * 8)); | |
1382 | ui_out_text (uiout, " bits in <1 sec"); | |
1383 | } | |
1384 | if (write_count > 0) | |
1385 | { | |
1386 | ui_out_text (uiout, ", "); | |
1387 | ui_out_field_fmt (uiout, "write-rate", "%ld", data_count / write_count); | |
1388 | ui_out_text (uiout, " bytes/write"); | |
1389 | } | |
1390 | ui_out_text (uiout, ".\n"); | |
1391 | #else | |
917317f4 JM |
1392 | fprintf_unfiltered (stream, "Transfer rate: "); |
1393 | if (time_count > 0) | |
1394 | fprintf_unfiltered (stream, "%ld bits/sec", (data_count * 8) / time_count); | |
c906108c | 1395 | else |
917317f4 JM |
1396 | fprintf_unfiltered (stream, "%ld bits in <1 sec", (data_count * 8)); |
1397 | if (write_count > 0) | |
1398 | fprintf_unfiltered (stream, ", %ld bytes/write", data_count / write_count); | |
1399 | fprintf_unfiltered (stream, ".\n"); | |
8b93c638 | 1400 | #endif |
c906108c SS |
1401 | } |
1402 | ||
1403 | /* This function allows the addition of incrementally linked object files. | |
1404 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
1405 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
1406 | special case syntax for the rombug target (Rombug is the boot | |
1407 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
1408 | rombug case, the user doesn't need to supply a text address, | |
1409 | instead a call to target_link() (in target.c) would supply the | |
1410 | value to use. We are now discontinuing this type of ad hoc syntax. */ | |
c906108c SS |
1411 | |
1412 | /* ARGSUSED */ | |
1413 | static void | |
fba45db2 | 1414 | add_symbol_file_command (char *args, int from_tty) |
c906108c | 1415 | { |
db162d44 | 1416 | char *filename = NULL; |
2df3850c | 1417 | int flags = OBJF_USERLOADED; |
c906108c | 1418 | char *arg; |
2acceee2 | 1419 | int expecting_option = 0; |
db162d44 | 1420 | int section_index = 0; |
2acceee2 JM |
1421 | int argcnt = 0; |
1422 | int sec_num = 0; | |
1423 | int i; | |
db162d44 EZ |
1424 | int expecting_sec_name = 0; |
1425 | int expecting_sec_addr = 0; | |
1426 | ||
2acceee2 JM |
1427 | struct |
1428 | { | |
2acceee2 JM |
1429 | char *name; |
1430 | char *value; | |
db162d44 EZ |
1431 | } sect_opts[SECT_OFF_MAX]; |
1432 | ||
2acceee2 | 1433 | struct section_addr_info section_addrs; |
3017564a | 1434 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); |
c5aa993b | 1435 | |
c906108c SS |
1436 | dont_repeat (); |
1437 | ||
1438 | if (args == NULL) | |
db162d44 | 1439 | error ("add-symbol-file takes a file name and an address"); |
c906108c SS |
1440 | |
1441 | /* Make a copy of the string that we can safely write into. */ | |
c2d11a7d | 1442 | args = xstrdup (args); |
c906108c | 1443 | |
2acceee2 JM |
1444 | /* Ensure section_addrs is initialized */ |
1445 | memset (§ion_addrs, 0, sizeof (section_addrs)); | |
1446 | ||
2acceee2 | 1447 | while (*args != '\000') |
c906108c | 1448 | { |
db162d44 | 1449 | /* Any leading spaces? */ |
c5aa993b | 1450 | while (isspace (*args)) |
db162d44 EZ |
1451 | args++; |
1452 | ||
1453 | /* Point arg to the beginning of the argument. */ | |
c906108c | 1454 | arg = args; |
db162d44 EZ |
1455 | |
1456 | /* Move args pointer over the argument. */ | |
c5aa993b | 1457 | while ((*args != '\000') && !isspace (*args)) |
db162d44 EZ |
1458 | args++; |
1459 | ||
1460 | /* If there are more arguments, terminate arg and | |
1461 | proceed past it. */ | |
c906108c | 1462 | if (*args != '\000') |
db162d44 EZ |
1463 | *args++ = '\000'; |
1464 | ||
1465 | /* Now process the argument. */ | |
1466 | if (argcnt == 0) | |
c906108c | 1467 | { |
db162d44 EZ |
1468 | /* The first argument is the file name. */ |
1469 | filename = tilde_expand (arg); | |
3017564a | 1470 | make_cleanup (xfree, filename); |
c906108c | 1471 | } |
db162d44 | 1472 | else |
7a78ae4e ND |
1473 | if (argcnt == 1) |
1474 | { | |
1475 | /* The second argument is always the text address at which | |
1476 | to load the program. */ | |
1477 | sect_opts[section_index].name = ".text"; | |
1478 | sect_opts[section_index].value = arg; | |
1479 | section_index++; | |
1480 | } | |
1481 | else | |
1482 | { | |
1483 | /* It's an option (starting with '-') or it's an argument | |
1484 | to an option */ | |
1485 | ||
1486 | if (*arg == '-') | |
1487 | { | |
1488 | if (strcmp (arg, "-mapped") == 0) | |
1489 | flags |= OBJF_MAPPED; | |
1490 | else | |
1491 | if (strcmp (arg, "-readnow") == 0) | |
1492 | flags |= OBJF_READNOW; | |
1493 | else | |
1494 | if (strcmp (arg, "-s") == 0) | |
1495 | { | |
1496 | if (section_index >= SECT_OFF_MAX) | |
1497 | error ("Too many sections specified."); | |
1498 | expecting_sec_name = 1; | |
1499 | expecting_sec_addr = 1; | |
1500 | } | |
1501 | } | |
1502 | else | |
1503 | { | |
1504 | if (expecting_sec_name) | |
db162d44 | 1505 | { |
7a78ae4e ND |
1506 | sect_opts[section_index].name = arg; |
1507 | expecting_sec_name = 0; | |
db162d44 EZ |
1508 | } |
1509 | else | |
7a78ae4e ND |
1510 | if (expecting_sec_addr) |
1511 | { | |
1512 | sect_opts[section_index].value = arg; | |
1513 | expecting_sec_addr = 0; | |
1514 | section_index++; | |
1515 | } | |
1516 | else | |
1517 | error ("USAGE: add-symbol-file <filename> <textaddress> [-mapped] [-readnow] [-s <secname> <addr>]*"); | |
1518 | } | |
1519 | } | |
db162d44 | 1520 | argcnt++; |
c906108c | 1521 | } |
c906108c | 1522 | |
db162d44 EZ |
1523 | /* Print the prompt for the query below. And save the arguments into |
1524 | a sect_addr_info structure to be passed around to other | |
1525 | functions. We have to split this up into separate print | |
1526 | statements because local_hex_string returns a local static | |
1527 | string. */ | |
2acceee2 | 1528 | |
db162d44 EZ |
1529 | printf_filtered ("add symbol table from file \"%s\" at\n", filename); |
1530 | for (i = 0; i < section_index; i++) | |
c906108c | 1531 | { |
db162d44 EZ |
1532 | CORE_ADDR addr; |
1533 | char *val = sect_opts[i].value; | |
1534 | char *sec = sect_opts[i].name; | |
1535 | ||
1536 | val = sect_opts[i].value; | |
1537 | if (val[0] == '0' && val[1] == 'x') | |
1538 | addr = strtoul (val+2, NULL, 16); | |
1539 | else | |
1540 | addr = strtoul (val, NULL, 10); | |
1541 | ||
db162d44 EZ |
1542 | /* Here we store the section offsets in the order they were |
1543 | entered on the command line. */ | |
1544 | section_addrs.other[sec_num].name = sec; | |
1545 | section_addrs.other[sec_num].addr = addr; | |
1546 | printf_filtered ("\t%s_addr = %s\n", | |
1547 | sec, | |
1548 | local_hex_string ((unsigned long)addr)); | |
1549 | sec_num++; | |
1550 | ||
1551 | /* The object's sections are initialized when a | |
1552 | call is made to build_objfile_section_table (objfile). | |
1553 | This happens in reread_symbols. | |
1554 | At this point, we don't know what file type this is, | |
1555 | so we can't determine what section names are valid. */ | |
2acceee2 | 1556 | } |
db162d44 | 1557 | |
2acceee2 | 1558 | if (from_tty && (!query ("%s", ""))) |
c906108c SS |
1559 | error ("Not confirmed."); |
1560 | ||
db162d44 | 1561 | symbol_file_add (filename, from_tty, §ion_addrs, 0, flags); |
c906108c SS |
1562 | |
1563 | /* Getting new symbols may change our opinion about what is | |
1564 | frameless. */ | |
1565 | reinit_frame_cache (); | |
db162d44 | 1566 | do_cleanups (my_cleanups); |
c906108c SS |
1567 | } |
1568 | \f | |
1569 | static void | |
fba45db2 | 1570 | add_shared_symbol_files_command (char *args, int from_tty) |
c906108c SS |
1571 | { |
1572 | #ifdef ADD_SHARED_SYMBOL_FILES | |
1573 | ADD_SHARED_SYMBOL_FILES (args, from_tty); | |
1574 | #else | |
1575 | error ("This command is not available in this configuration of GDB."); | |
c5aa993b | 1576 | #endif |
c906108c SS |
1577 | } |
1578 | \f | |
1579 | /* Re-read symbols if a symbol-file has changed. */ | |
1580 | void | |
fba45db2 | 1581 | reread_symbols (void) |
c906108c SS |
1582 | { |
1583 | struct objfile *objfile; | |
1584 | long new_modtime; | |
1585 | int reread_one = 0; | |
1586 | struct stat new_statbuf; | |
1587 | int res; | |
1588 | ||
1589 | /* With the addition of shared libraries, this should be modified, | |
1590 | the load time should be saved in the partial symbol tables, since | |
1591 | different tables may come from different source files. FIXME. | |
1592 | This routine should then walk down each partial symbol table | |
1593 | and see if the symbol table that it originates from has been changed */ | |
1594 | ||
c5aa993b JM |
1595 | for (objfile = object_files; objfile; objfile = objfile->next) |
1596 | { | |
1597 | if (objfile->obfd) | |
1598 | { | |
c906108c | 1599 | #ifdef IBM6000_TARGET |
c5aa993b JM |
1600 | /* If this object is from a shared library, then you should |
1601 | stat on the library name, not member name. */ | |
c906108c | 1602 | |
c5aa993b JM |
1603 | if (objfile->obfd->my_archive) |
1604 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
1605 | else | |
c906108c | 1606 | #endif |
c5aa993b JM |
1607 | res = stat (objfile->name, &new_statbuf); |
1608 | if (res != 0) | |
c906108c | 1609 | { |
c5aa993b JM |
1610 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
1611 | printf_filtered ("`%s' has disappeared; keeping its symbols.\n", | |
1612 | objfile->name); | |
1613 | continue; | |
c906108c | 1614 | } |
c5aa993b JM |
1615 | new_modtime = new_statbuf.st_mtime; |
1616 | if (new_modtime != objfile->mtime) | |
c906108c | 1617 | { |
c5aa993b JM |
1618 | struct cleanup *old_cleanups; |
1619 | struct section_offsets *offsets; | |
1620 | int num_offsets; | |
c5aa993b JM |
1621 | char *obfd_filename; |
1622 | ||
1623 | printf_filtered ("`%s' has changed; re-reading symbols.\n", | |
1624 | objfile->name); | |
1625 | ||
1626 | /* There are various functions like symbol_file_add, | |
1627 | symfile_bfd_open, syms_from_objfile, etc., which might | |
1628 | appear to do what we want. But they have various other | |
1629 | effects which we *don't* want. So we just do stuff | |
1630 | ourselves. We don't worry about mapped files (for one thing, | |
1631 | any mapped file will be out of date). */ | |
1632 | ||
1633 | /* If we get an error, blow away this objfile (not sure if | |
1634 | that is the correct response for things like shared | |
1635 | libraries). */ | |
74b7792f | 1636 | old_cleanups = make_cleanup_free_objfile (objfile); |
c5aa993b | 1637 | /* We need to do this whenever any symbols go away. */ |
74b7792f | 1638 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c5aa993b JM |
1639 | |
1640 | /* Clean up any state BFD has sitting around. We don't need | |
1641 | to close the descriptor but BFD lacks a way of closing the | |
1642 | BFD without closing the descriptor. */ | |
1643 | obfd_filename = bfd_get_filename (objfile->obfd); | |
1644 | if (!bfd_close (objfile->obfd)) | |
1645 | error ("Can't close BFD for %s: %s", objfile->name, | |
1646 | bfd_errmsg (bfd_get_error ())); | |
1647 | objfile->obfd = bfd_openr (obfd_filename, gnutarget); | |
1648 | if (objfile->obfd == NULL) | |
1649 | error ("Can't open %s to read symbols.", objfile->name); | |
1650 | /* bfd_openr sets cacheable to true, which is what we want. */ | |
1651 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
1652 | error ("Can't read symbols from %s: %s.", objfile->name, | |
1653 | bfd_errmsg (bfd_get_error ())); | |
1654 | ||
1655 | /* Save the offsets, we will nuke them with the rest of the | |
1656 | psymbol_obstack. */ | |
1657 | num_offsets = objfile->num_sections; | |
d4f3574e SS |
1658 | offsets = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); |
1659 | memcpy (offsets, objfile->section_offsets, SIZEOF_SECTION_OFFSETS); | |
c5aa993b JM |
1660 | |
1661 | /* Nuke all the state that we will re-read. Much of the following | |
1662 | code which sets things to NULL really is necessary to tell | |
1663 | other parts of GDB that there is nothing currently there. */ | |
1664 | ||
1665 | /* FIXME: Do we have to free a whole linked list, or is this | |
1666 | enough? */ | |
1667 | if (objfile->global_psymbols.list) | |
1668 | mfree (objfile->md, objfile->global_psymbols.list); | |
1669 | memset (&objfile->global_psymbols, 0, | |
1670 | sizeof (objfile->global_psymbols)); | |
1671 | if (objfile->static_psymbols.list) | |
1672 | mfree (objfile->md, objfile->static_psymbols.list); | |
1673 | memset (&objfile->static_psymbols, 0, | |
1674 | sizeof (objfile->static_psymbols)); | |
1675 | ||
1676 | /* Free the obstacks for non-reusable objfiles */ | |
c2d11a7d | 1677 | free_bcache (&objfile->psymbol_cache); |
c5aa993b JM |
1678 | obstack_free (&objfile->psymbol_obstack, 0); |
1679 | obstack_free (&objfile->symbol_obstack, 0); | |
1680 | obstack_free (&objfile->type_obstack, 0); | |
1681 | objfile->sections = NULL; | |
1682 | objfile->symtabs = NULL; | |
1683 | objfile->psymtabs = NULL; | |
1684 | objfile->free_psymtabs = NULL; | |
1685 | objfile->msymbols = NULL; | |
1686 | objfile->minimal_symbol_count = 0; | |
0a83117a MS |
1687 | memset (&objfile->msymbol_hash, 0, |
1688 | sizeof (objfile->msymbol_hash)); | |
1689 | memset (&objfile->msymbol_demangled_hash, 0, | |
1690 | sizeof (objfile->msymbol_demangled_hash)); | |
c5aa993b JM |
1691 | objfile->fundamental_types = NULL; |
1692 | if (objfile->sf != NULL) | |
1693 | { | |
1694 | (*objfile->sf->sym_finish) (objfile); | |
1695 | } | |
1696 | ||
1697 | /* We never make this a mapped file. */ | |
1698 | objfile->md = NULL; | |
1699 | /* obstack_specify_allocation also initializes the obstack so | |
1700 | it is empty. */ | |
1701 | obstack_specify_allocation (&objfile->psymbol_cache.cache, 0, 0, | |
b8c9b27d | 1702 | xmalloc, xfree); |
c5aa993b | 1703 | obstack_specify_allocation (&objfile->psymbol_obstack, 0, 0, |
b8c9b27d | 1704 | xmalloc, xfree); |
c5aa993b | 1705 | obstack_specify_allocation (&objfile->symbol_obstack, 0, 0, |
b8c9b27d | 1706 | xmalloc, xfree); |
c5aa993b | 1707 | obstack_specify_allocation (&objfile->type_obstack, 0, 0, |
b8c9b27d | 1708 | xmalloc, xfree); |
c5aa993b JM |
1709 | if (build_objfile_section_table (objfile)) |
1710 | { | |
1711 | error ("Can't find the file sections in `%s': %s", | |
1712 | objfile->name, bfd_errmsg (bfd_get_error ())); | |
1713 | } | |
1714 | ||
1715 | /* We use the same section offsets as from last time. I'm not | |
1716 | sure whether that is always correct for shared libraries. */ | |
1717 | objfile->section_offsets = (struct section_offsets *) | |
d4f3574e SS |
1718 | obstack_alloc (&objfile->psymbol_obstack, SIZEOF_SECTION_OFFSETS); |
1719 | memcpy (objfile->section_offsets, offsets, SIZEOF_SECTION_OFFSETS); | |
c5aa993b JM |
1720 | objfile->num_sections = num_offsets; |
1721 | ||
1722 | /* What the hell is sym_new_init for, anyway? The concept of | |
1723 | distinguishing between the main file and additional files | |
1724 | in this way seems rather dubious. */ | |
1725 | if (objfile == symfile_objfile) | |
1726 | { | |
1727 | (*objfile->sf->sym_new_init) (objfile); | |
c906108c | 1728 | #ifdef HPUXHPPA |
c5aa993b | 1729 | RESET_HP_UX_GLOBALS (); |
c906108c | 1730 | #endif |
c5aa993b JM |
1731 | } |
1732 | ||
1733 | (*objfile->sf->sym_init) (objfile); | |
1734 | clear_complaints (1, 1); | |
1735 | /* The "mainline" parameter is a hideous hack; I think leaving it | |
1736 | zero is OK since dbxread.c also does what it needs to do if | |
1737 | objfile->global_psymbols.size is 0. */ | |
96baa820 | 1738 | (*objfile->sf->sym_read) (objfile, 0); |
c5aa993b JM |
1739 | if (!have_partial_symbols () && !have_full_symbols ()) |
1740 | { | |
1741 | wrap_here (""); | |
1742 | printf_filtered ("(no debugging symbols found)\n"); | |
1743 | wrap_here (""); | |
1744 | } | |
1745 | objfile->flags |= OBJF_SYMS; | |
1746 | ||
1747 | /* We're done reading the symbol file; finish off complaints. */ | |
1748 | clear_complaints (0, 1); | |
c906108c | 1749 | |
c5aa993b JM |
1750 | /* Getting new symbols may change our opinion about what is |
1751 | frameless. */ | |
c906108c | 1752 | |
c5aa993b | 1753 | reinit_frame_cache (); |
c906108c | 1754 | |
c5aa993b JM |
1755 | /* Discard cleanups as symbol reading was successful. */ |
1756 | discard_cleanups (old_cleanups); | |
c906108c | 1757 | |
c5aa993b JM |
1758 | /* If the mtime has changed between the time we set new_modtime |
1759 | and now, we *want* this to be out of date, so don't call stat | |
1760 | again now. */ | |
1761 | objfile->mtime = new_modtime; | |
1762 | reread_one = 1; | |
c906108c | 1763 | |
c5aa993b | 1764 | /* Call this after reading in a new symbol table to give target |
38c2ef12 | 1765 | dependent code a crack at the new symbols. For instance, this |
c5aa993b JM |
1766 | could be used to update the values of target-specific symbols GDB |
1767 | needs to keep track of (such as _sigtramp, or whatever). */ | |
c906108c | 1768 | |
c5aa993b JM |
1769 | TARGET_SYMFILE_POSTREAD (objfile); |
1770 | } | |
c906108c SS |
1771 | } |
1772 | } | |
c906108c SS |
1773 | |
1774 | if (reread_one) | |
1775 | clear_symtab_users (); | |
1776 | } | |
c906108c SS |
1777 | \f |
1778 | ||
c5aa993b JM |
1779 | |
1780 | typedef struct | |
1781 | { | |
1782 | char *ext; | |
c906108c | 1783 | enum language lang; |
c5aa993b JM |
1784 | } |
1785 | filename_language; | |
c906108c | 1786 | |
c5aa993b | 1787 | static filename_language *filename_language_table; |
c906108c SS |
1788 | static int fl_table_size, fl_table_next; |
1789 | ||
1790 | static void | |
fba45db2 | 1791 | add_filename_language (char *ext, enum language lang) |
c906108c SS |
1792 | { |
1793 | if (fl_table_next >= fl_table_size) | |
1794 | { | |
1795 | fl_table_size += 10; | |
0e52036f AC |
1796 | filename_language_table = xrealloc (filename_language_table, |
1797 | fl_table_size); | |
c906108c SS |
1798 | } |
1799 | ||
4fcf66da | 1800 | filename_language_table[fl_table_next].ext = xstrdup (ext); |
c906108c SS |
1801 | filename_language_table[fl_table_next].lang = lang; |
1802 | fl_table_next++; | |
1803 | } | |
1804 | ||
1805 | static char *ext_args; | |
1806 | ||
1807 | static void | |
fba45db2 | 1808 | set_ext_lang_command (char *args, int from_tty) |
c906108c SS |
1809 | { |
1810 | int i; | |
1811 | char *cp = ext_args; | |
1812 | enum language lang; | |
1813 | ||
1814 | /* First arg is filename extension, starting with '.' */ | |
1815 | if (*cp != '.') | |
1816 | error ("'%s': Filename extension must begin with '.'", ext_args); | |
1817 | ||
1818 | /* Find end of first arg. */ | |
c5aa993b | 1819 | while (*cp && !isspace (*cp)) |
c906108c SS |
1820 | cp++; |
1821 | ||
1822 | if (*cp == '\0') | |
1823 | error ("'%s': two arguments required -- filename extension and language", | |
1824 | ext_args); | |
1825 | ||
1826 | /* Null-terminate first arg */ | |
c5aa993b | 1827 | *cp++ = '\0'; |
c906108c SS |
1828 | |
1829 | /* Find beginning of second arg, which should be a source language. */ | |
1830 | while (*cp && isspace (*cp)) | |
1831 | cp++; | |
1832 | ||
1833 | if (*cp == '\0') | |
1834 | error ("'%s': two arguments required -- filename extension and language", | |
1835 | ext_args); | |
1836 | ||
1837 | /* Lookup the language from among those we know. */ | |
1838 | lang = language_enum (cp); | |
1839 | ||
1840 | /* Now lookup the filename extension: do we already know it? */ | |
1841 | for (i = 0; i < fl_table_next; i++) | |
1842 | if (0 == strcmp (ext_args, filename_language_table[i].ext)) | |
1843 | break; | |
1844 | ||
1845 | if (i >= fl_table_next) | |
1846 | { | |
1847 | /* new file extension */ | |
1848 | add_filename_language (ext_args, lang); | |
1849 | } | |
1850 | else | |
1851 | { | |
1852 | /* redefining a previously known filename extension */ | |
1853 | ||
1854 | /* if (from_tty) */ | |
1855 | /* query ("Really make files of type %s '%s'?", */ | |
1856 | /* ext_args, language_str (lang)); */ | |
1857 | ||
b8c9b27d | 1858 | xfree (filename_language_table[i].ext); |
4fcf66da | 1859 | filename_language_table[i].ext = xstrdup (ext_args); |
c906108c SS |
1860 | filename_language_table[i].lang = lang; |
1861 | } | |
1862 | } | |
1863 | ||
1864 | static void | |
fba45db2 | 1865 | info_ext_lang_command (char *args, int from_tty) |
c906108c SS |
1866 | { |
1867 | int i; | |
1868 | ||
1869 | printf_filtered ("Filename extensions and the languages they represent:"); | |
1870 | printf_filtered ("\n\n"); | |
1871 | for (i = 0; i < fl_table_next; i++) | |
c5aa993b JM |
1872 | printf_filtered ("\t%s\t- %s\n", |
1873 | filename_language_table[i].ext, | |
c906108c SS |
1874 | language_str (filename_language_table[i].lang)); |
1875 | } | |
1876 | ||
1877 | static void | |
fba45db2 | 1878 | init_filename_language_table (void) |
c906108c SS |
1879 | { |
1880 | if (fl_table_size == 0) /* protect against repetition */ | |
1881 | { | |
1882 | fl_table_size = 20; | |
1883 | fl_table_next = 0; | |
c5aa993b | 1884 | filename_language_table = |
c906108c | 1885 | xmalloc (fl_table_size * sizeof (*filename_language_table)); |
c5aa993b JM |
1886 | add_filename_language (".c", language_c); |
1887 | add_filename_language (".C", language_cplus); | |
1888 | add_filename_language (".cc", language_cplus); | |
1889 | add_filename_language (".cp", language_cplus); | |
1890 | add_filename_language (".cpp", language_cplus); | |
1891 | add_filename_language (".cxx", language_cplus); | |
1892 | add_filename_language (".c++", language_cplus); | |
1893 | add_filename_language (".java", language_java); | |
c906108c | 1894 | add_filename_language (".class", language_java); |
c5aa993b JM |
1895 | add_filename_language (".ch", language_chill); |
1896 | add_filename_language (".c186", language_chill); | |
1897 | add_filename_language (".c286", language_chill); | |
1898 | add_filename_language (".f", language_fortran); | |
1899 | add_filename_language (".F", language_fortran); | |
1900 | add_filename_language (".s", language_asm); | |
1901 | add_filename_language (".S", language_asm); | |
c6fd39cd PM |
1902 | add_filename_language (".pas", language_pascal); |
1903 | add_filename_language (".p", language_pascal); | |
1904 | add_filename_language (".pp", language_pascal); | |
c906108c SS |
1905 | } |
1906 | } | |
1907 | ||
1908 | enum language | |
fba45db2 | 1909 | deduce_language_from_filename (char *filename) |
c906108c SS |
1910 | { |
1911 | int i; | |
1912 | char *cp; | |
1913 | ||
1914 | if (filename != NULL) | |
1915 | if ((cp = strrchr (filename, '.')) != NULL) | |
1916 | for (i = 0; i < fl_table_next; i++) | |
1917 | if (strcmp (cp, filename_language_table[i].ext) == 0) | |
1918 | return filename_language_table[i].lang; | |
1919 | ||
1920 | return language_unknown; | |
1921 | } | |
1922 | \f | |
1923 | /* allocate_symtab: | |
1924 | ||
1925 | Allocate and partly initialize a new symbol table. Return a pointer | |
1926 | to it. error() if no space. | |
1927 | ||
1928 | Caller must set these fields: | |
c5aa993b JM |
1929 | LINETABLE(symtab) |
1930 | symtab->blockvector | |
1931 | symtab->dirname | |
1932 | symtab->free_code | |
1933 | symtab->free_ptr | |
1934 | possibly free_named_symtabs (symtab->filename); | |
c906108c SS |
1935 | */ |
1936 | ||
1937 | struct symtab * | |
fba45db2 | 1938 | allocate_symtab (char *filename, struct objfile *objfile) |
c906108c SS |
1939 | { |
1940 | register struct symtab *symtab; | |
1941 | ||
1942 | symtab = (struct symtab *) | |
c5aa993b | 1943 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct symtab)); |
c906108c | 1944 | memset (symtab, 0, sizeof (*symtab)); |
c5aa993b JM |
1945 | symtab->filename = obsavestring (filename, strlen (filename), |
1946 | &objfile->symbol_obstack); | |
1947 | symtab->fullname = NULL; | |
1948 | symtab->language = deduce_language_from_filename (filename); | |
1949 | symtab->debugformat = obsavestring ("unknown", 7, | |
1950 | &objfile->symbol_obstack); | |
c906108c SS |
1951 | |
1952 | /* Hook it to the objfile it comes from */ | |
1953 | ||
c5aa993b JM |
1954 | symtab->objfile = objfile; |
1955 | symtab->next = objfile->symtabs; | |
1956 | objfile->symtabs = symtab; | |
c906108c SS |
1957 | |
1958 | /* FIXME: This should go away. It is only defined for the Z8000, | |
1959 | and the Z8000 definition of this macro doesn't have anything to | |
1960 | do with the now-nonexistent EXTRA_SYMTAB_INFO macro, it's just | |
1961 | here for convenience. */ | |
1962 | #ifdef INIT_EXTRA_SYMTAB_INFO | |
1963 | INIT_EXTRA_SYMTAB_INFO (symtab); | |
1964 | #endif | |
1965 | ||
1966 | return (symtab); | |
1967 | } | |
1968 | ||
1969 | struct partial_symtab * | |
fba45db2 | 1970 | allocate_psymtab (char *filename, struct objfile *objfile) |
c906108c SS |
1971 | { |
1972 | struct partial_symtab *psymtab; | |
1973 | ||
c5aa993b | 1974 | if (objfile->free_psymtabs) |
c906108c | 1975 | { |
c5aa993b JM |
1976 | psymtab = objfile->free_psymtabs; |
1977 | objfile->free_psymtabs = psymtab->next; | |
c906108c SS |
1978 | } |
1979 | else | |
1980 | psymtab = (struct partial_symtab *) | |
c5aa993b | 1981 | obstack_alloc (&objfile->psymbol_obstack, |
c906108c SS |
1982 | sizeof (struct partial_symtab)); |
1983 | ||
1984 | memset (psymtab, 0, sizeof (struct partial_symtab)); | |
c5aa993b JM |
1985 | psymtab->filename = obsavestring (filename, strlen (filename), |
1986 | &objfile->psymbol_obstack); | |
1987 | psymtab->symtab = NULL; | |
c906108c SS |
1988 | |
1989 | /* Prepend it to the psymtab list for the objfile it belongs to. | |
1990 | Psymtabs are searched in most recent inserted -> least recent | |
1991 | inserted order. */ | |
1992 | ||
c5aa993b JM |
1993 | psymtab->objfile = objfile; |
1994 | psymtab->next = objfile->psymtabs; | |
1995 | objfile->psymtabs = psymtab; | |
c906108c SS |
1996 | #if 0 |
1997 | { | |
1998 | struct partial_symtab **prev_pst; | |
c5aa993b JM |
1999 | psymtab->objfile = objfile; |
2000 | psymtab->next = NULL; | |
2001 | prev_pst = &(objfile->psymtabs); | |
c906108c | 2002 | while ((*prev_pst) != NULL) |
c5aa993b | 2003 | prev_pst = &((*prev_pst)->next); |
c906108c | 2004 | (*prev_pst) = psymtab; |
c5aa993b | 2005 | } |
c906108c | 2006 | #endif |
c5aa993b | 2007 | |
c906108c SS |
2008 | return (psymtab); |
2009 | } | |
2010 | ||
2011 | void | |
fba45db2 | 2012 | discard_psymtab (struct partial_symtab *pst) |
c906108c SS |
2013 | { |
2014 | struct partial_symtab **prev_pst; | |
2015 | ||
2016 | /* From dbxread.c: | |
2017 | Empty psymtabs happen as a result of header files which don't | |
2018 | have any symbols in them. There can be a lot of them. But this | |
2019 | check is wrong, in that a psymtab with N_SLINE entries but | |
2020 | nothing else is not empty, but we don't realize that. Fixing | |
2021 | that without slowing things down might be tricky. */ | |
2022 | ||
2023 | /* First, snip it out of the psymtab chain */ | |
2024 | ||
2025 | prev_pst = &(pst->objfile->psymtabs); | |
2026 | while ((*prev_pst) != pst) | |
2027 | prev_pst = &((*prev_pst)->next); | |
2028 | (*prev_pst) = pst->next; | |
2029 | ||
2030 | /* Next, put it on a free list for recycling */ | |
2031 | ||
2032 | pst->next = pst->objfile->free_psymtabs; | |
2033 | pst->objfile->free_psymtabs = pst; | |
2034 | } | |
c906108c | 2035 | \f |
c5aa993b | 2036 | |
c906108c SS |
2037 | /* Reset all data structures in gdb which may contain references to symbol |
2038 | table data. */ | |
2039 | ||
2040 | void | |
fba45db2 | 2041 | clear_symtab_users (void) |
c906108c SS |
2042 | { |
2043 | /* Someday, we should do better than this, by only blowing away | |
2044 | the things that really need to be blown. */ | |
2045 | clear_value_history (); | |
2046 | clear_displays (); | |
2047 | clear_internalvars (); | |
2048 | breakpoint_re_set (); | |
2049 | set_default_breakpoint (0, 0, 0, 0); | |
2050 | current_source_symtab = 0; | |
2051 | current_source_line = 0; | |
2052 | clear_pc_function_cache (); | |
11cf8741 JM |
2053 | if (target_new_objfile_hook) |
2054 | target_new_objfile_hook (NULL); | |
c906108c SS |
2055 | } |
2056 | ||
74b7792f AC |
2057 | static void |
2058 | clear_symtab_users_cleanup (void *ignore) | |
2059 | { | |
2060 | clear_symtab_users (); | |
2061 | } | |
2062 | ||
c906108c SS |
2063 | /* clear_symtab_users_once: |
2064 | ||
2065 | This function is run after symbol reading, or from a cleanup. | |
2066 | If an old symbol table was obsoleted, the old symbol table | |
2067 | has been blown away, but the other GDB data structures that may | |
2068 | reference it have not yet been cleared or re-directed. (The old | |
2069 | symtab was zapped, and the cleanup queued, in free_named_symtab() | |
2070 | below.) | |
2071 | ||
2072 | This function can be queued N times as a cleanup, or called | |
2073 | directly; it will do all the work the first time, and then will be a | |
2074 | no-op until the next time it is queued. This works by bumping a | |
2075 | counter at queueing time. Much later when the cleanup is run, or at | |
2076 | the end of symbol processing (in case the cleanup is discarded), if | |
2077 | the queued count is greater than the "done-count", we do the work | |
2078 | and set the done-count to the queued count. If the queued count is | |
2079 | less than or equal to the done-count, we just ignore the call. This | |
2080 | is needed because reading a single .o file will often replace many | |
2081 | symtabs (one per .h file, for example), and we don't want to reset | |
2082 | the breakpoints N times in the user's face. | |
2083 | ||
2084 | The reason we both queue a cleanup, and call it directly after symbol | |
2085 | reading, is because the cleanup protects us in case of errors, but is | |
2086 | discarded if symbol reading is successful. */ | |
2087 | ||
2088 | #if 0 | |
2089 | /* FIXME: As free_named_symtabs is currently a big noop this function | |
2090 | is no longer needed. */ | |
a14ed312 | 2091 | static void clear_symtab_users_once (void); |
c906108c SS |
2092 | |
2093 | static int clear_symtab_users_queued; | |
2094 | static int clear_symtab_users_done; | |
2095 | ||
2096 | static void | |
fba45db2 | 2097 | clear_symtab_users_once (void) |
c906108c SS |
2098 | { |
2099 | /* Enforce once-per-`do_cleanups'-semantics */ | |
2100 | if (clear_symtab_users_queued <= clear_symtab_users_done) | |
2101 | return; | |
2102 | clear_symtab_users_done = clear_symtab_users_queued; | |
2103 | ||
2104 | clear_symtab_users (); | |
2105 | } | |
2106 | #endif | |
2107 | ||
2108 | /* Delete the specified psymtab, and any others that reference it. */ | |
2109 | ||
2110 | static void | |
fba45db2 | 2111 | cashier_psymtab (struct partial_symtab *pst) |
c906108c SS |
2112 | { |
2113 | struct partial_symtab *ps, *pprev = NULL; | |
2114 | int i; | |
2115 | ||
2116 | /* Find its previous psymtab in the chain */ | |
c5aa993b JM |
2117 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) |
2118 | { | |
2119 | if (ps == pst) | |
2120 | break; | |
2121 | pprev = ps; | |
2122 | } | |
c906108c | 2123 | |
c5aa993b JM |
2124 | if (ps) |
2125 | { | |
2126 | /* Unhook it from the chain. */ | |
2127 | if (ps == pst->objfile->psymtabs) | |
2128 | pst->objfile->psymtabs = ps->next; | |
2129 | else | |
2130 | pprev->next = ps->next; | |
2131 | ||
2132 | /* FIXME, we can't conveniently deallocate the entries in the | |
2133 | partial_symbol lists (global_psymbols/static_psymbols) that | |
2134 | this psymtab points to. These just take up space until all | |
2135 | the psymtabs are reclaimed. Ditto the dependencies list and | |
2136 | filename, which are all in the psymbol_obstack. */ | |
2137 | ||
2138 | /* We need to cashier any psymtab that has this one as a dependency... */ | |
2139 | again: | |
2140 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) | |
2141 | { | |
2142 | for (i = 0; i < ps->number_of_dependencies; i++) | |
2143 | { | |
2144 | if (ps->dependencies[i] == pst) | |
2145 | { | |
2146 | cashier_psymtab (ps); | |
2147 | goto again; /* Must restart, chain has been munged. */ | |
2148 | } | |
2149 | } | |
c906108c | 2150 | } |
c906108c | 2151 | } |
c906108c SS |
2152 | } |
2153 | ||
2154 | /* If a symtab or psymtab for filename NAME is found, free it along | |
2155 | with any dependent breakpoints, displays, etc. | |
2156 | Used when loading new versions of object modules with the "add-file" | |
2157 | command. This is only called on the top-level symtab or psymtab's name; | |
2158 | it is not called for subsidiary files such as .h files. | |
2159 | ||
2160 | Return value is 1 if we blew away the environment, 0 if not. | |
7e73cedf | 2161 | FIXME. The return value appears to never be used. |
c906108c SS |
2162 | |
2163 | FIXME. I think this is not the best way to do this. We should | |
2164 | work on being gentler to the environment while still cleaning up | |
2165 | all stray pointers into the freed symtab. */ | |
2166 | ||
2167 | int | |
fba45db2 | 2168 | free_named_symtabs (char *name) |
c906108c SS |
2169 | { |
2170 | #if 0 | |
2171 | /* FIXME: With the new method of each objfile having it's own | |
2172 | psymtab list, this function needs serious rethinking. In particular, | |
2173 | why was it ever necessary to toss psymtabs with specific compilation | |
2174 | unit filenames, as opposed to all psymtabs from a particular symbol | |
2175 | file? -- fnf | |
2176 | Well, the answer is that some systems permit reloading of particular | |
2177 | compilation units. We want to blow away any old info about these | |
2178 | compilation units, regardless of which objfiles they arrived in. --gnu. */ | |
2179 | ||
2180 | register struct symtab *s; | |
2181 | register struct symtab *prev; | |
2182 | register struct partial_symtab *ps; | |
2183 | struct blockvector *bv; | |
2184 | int blewit = 0; | |
2185 | ||
2186 | /* We only wack things if the symbol-reload switch is set. */ | |
2187 | if (!symbol_reloading) | |
2188 | return 0; | |
2189 | ||
2190 | /* Some symbol formats have trouble providing file names... */ | |
2191 | if (name == 0 || *name == '\0') | |
2192 | return 0; | |
2193 | ||
2194 | /* Look for a psymtab with the specified name. */ | |
2195 | ||
2196 | again2: | |
c5aa993b JM |
2197 | for (ps = partial_symtab_list; ps; ps = ps->next) |
2198 | { | |
2199 | if (STREQ (name, ps->filename)) | |
2200 | { | |
2201 | cashier_psymtab (ps); /* Blow it away...and its little dog, too. */ | |
2202 | goto again2; /* Must restart, chain has been munged */ | |
2203 | } | |
c906108c | 2204 | } |
c906108c SS |
2205 | |
2206 | /* Look for a symtab with the specified name. */ | |
2207 | ||
2208 | for (s = symtab_list; s; s = s->next) | |
2209 | { | |
2210 | if (STREQ (name, s->filename)) | |
2211 | break; | |
2212 | prev = s; | |
2213 | } | |
2214 | ||
2215 | if (s) | |
2216 | { | |
2217 | if (s == symtab_list) | |
2218 | symtab_list = s->next; | |
2219 | else | |
2220 | prev->next = s->next; | |
2221 | ||
2222 | /* For now, queue a delete for all breakpoints, displays, etc., whether | |
c5aa993b JM |
2223 | or not they depend on the symtab being freed. This should be |
2224 | changed so that only those data structures affected are deleted. */ | |
c906108c SS |
2225 | |
2226 | /* But don't delete anything if the symtab is empty. | |
c5aa993b JM |
2227 | This test is necessary due to a bug in "dbxread.c" that |
2228 | causes empty symtabs to be created for N_SO symbols that | |
2229 | contain the pathname of the object file. (This problem | |
2230 | has been fixed in GDB 3.9x). */ | |
c906108c SS |
2231 | |
2232 | bv = BLOCKVECTOR (s); | |
2233 | if (BLOCKVECTOR_NBLOCKS (bv) > 2 | |
2234 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) | |
2235 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK))) | |
2236 | { | |
2237 | complain (&oldsyms_complaint, name); | |
2238 | ||
2239 | clear_symtab_users_queued++; | |
2240 | make_cleanup (clear_symtab_users_once, 0); | |
2241 | blewit = 1; | |
c5aa993b JM |
2242 | } |
2243 | else | |
2244 | { | |
c906108c SS |
2245 | complain (&empty_symtab_complaint, name); |
2246 | } | |
2247 | ||
2248 | free_symtab (s); | |
2249 | } | |
2250 | else | |
2251 | { | |
2252 | /* It is still possible that some breakpoints will be affected | |
c5aa993b JM |
2253 | even though no symtab was found, since the file might have |
2254 | been compiled without debugging, and hence not be associated | |
2255 | with a symtab. In order to handle this correctly, we would need | |
2256 | to keep a list of text address ranges for undebuggable files. | |
2257 | For now, we do nothing, since this is a fairly obscure case. */ | |
c906108c SS |
2258 | ; |
2259 | } | |
2260 | ||
2261 | /* FIXME, what about the minimal symbol table? */ | |
2262 | return blewit; | |
2263 | #else | |
2264 | return (0); | |
2265 | #endif | |
2266 | } | |
2267 | \f | |
2268 | /* Allocate and partially fill a partial symtab. It will be | |
2269 | completely filled at the end of the symbol list. | |
2270 | ||
d4f3574e | 2271 | FILENAME is the name of the symbol-file we are reading from. */ |
c906108c SS |
2272 | |
2273 | struct partial_symtab * | |
fba45db2 KB |
2274 | start_psymtab_common (struct objfile *objfile, |
2275 | struct section_offsets *section_offsets, char *filename, | |
2276 | CORE_ADDR textlow, struct partial_symbol **global_syms, | |
2277 | struct partial_symbol **static_syms) | |
c906108c SS |
2278 | { |
2279 | struct partial_symtab *psymtab; | |
2280 | ||
2281 | psymtab = allocate_psymtab (filename, objfile); | |
c5aa993b JM |
2282 | psymtab->section_offsets = section_offsets; |
2283 | psymtab->textlow = textlow; | |
2284 | psymtab->texthigh = psymtab->textlow; /* default */ | |
2285 | psymtab->globals_offset = global_syms - objfile->global_psymbols.list; | |
2286 | psymtab->statics_offset = static_syms - objfile->static_psymbols.list; | |
c906108c SS |
2287 | return (psymtab); |
2288 | } | |
2289 | \f | |
2290 | /* Add a symbol with a long value to a psymtab. | |
2291 | Since one arg is a struct, we pass in a ptr and deref it (sigh). */ | |
2292 | ||
2293 | void | |
fba45db2 KB |
2294 | add_psymbol_to_list (char *name, int namelength, namespace_enum namespace, |
2295 | enum address_class class, | |
2296 | struct psymbol_allocation_list *list, long val, /* Value as a long */ | |
2297 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ | |
2298 | enum language language, struct objfile *objfile) | |
c906108c SS |
2299 | { |
2300 | register struct partial_symbol *psym; | |
2301 | char *buf = alloca (namelength + 1); | |
2302 | /* psymbol is static so that there will be no uninitialized gaps in the | |
2303 | structure which might contain random data, causing cache misses in | |
2304 | bcache. */ | |
2305 | static struct partial_symbol psymbol; | |
2306 | ||
2307 | /* Create local copy of the partial symbol */ | |
2308 | memcpy (buf, name, namelength); | |
2309 | buf[namelength] = '\0'; | |
2310 | SYMBOL_NAME (&psymbol) = bcache (buf, namelength + 1, &objfile->psymbol_cache); | |
2311 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ | |
2312 | if (val != 0) | |
2313 | { | |
2314 | SYMBOL_VALUE (&psymbol) = val; | |
2315 | } | |
2316 | else | |
2317 | { | |
2318 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; | |
2319 | } | |
2320 | SYMBOL_SECTION (&psymbol) = 0; | |
2321 | SYMBOL_LANGUAGE (&psymbol) = language; | |
2322 | PSYMBOL_NAMESPACE (&psymbol) = namespace; | |
2323 | PSYMBOL_CLASS (&psymbol) = class; | |
2324 | SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol, language); | |
2325 | ||
2326 | /* Stash the partial symbol away in the cache */ | |
2327 | psym = bcache (&psymbol, sizeof (struct partial_symbol), &objfile->psymbol_cache); | |
2328 | ||
2329 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ | |
2330 | if (list->next >= list->list + list->size) | |
2331 | { | |
2332 | extend_psymbol_list (list, objfile); | |
2333 | } | |
2334 | *list->next++ = psym; | |
2335 | OBJSTAT (objfile, n_psyms++); | |
2336 | } | |
2337 | ||
2338 | /* Add a symbol with a long value to a psymtab. This differs from | |
2339 | * add_psymbol_to_list above in taking both a mangled and a demangled | |
2340 | * name. */ | |
2341 | ||
2342 | void | |
fba45db2 KB |
2343 | add_psymbol_with_dem_name_to_list (char *name, int namelength, char *dem_name, |
2344 | int dem_namelength, namespace_enum namespace, | |
2345 | enum address_class class, | |
2346 | struct psymbol_allocation_list *list, long val, /* Value as a long */ | |
2347 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ | |
2348 | enum language language, | |
2349 | struct objfile *objfile) | |
c906108c SS |
2350 | { |
2351 | register struct partial_symbol *psym; | |
2352 | char *buf = alloca (namelength + 1); | |
2353 | /* psymbol is static so that there will be no uninitialized gaps in the | |
2354 | structure which might contain random data, causing cache misses in | |
2355 | bcache. */ | |
2356 | static struct partial_symbol psymbol; | |
2357 | ||
2358 | /* Create local copy of the partial symbol */ | |
2359 | ||
2360 | memcpy (buf, name, namelength); | |
2361 | buf[namelength] = '\0'; | |
2362 | SYMBOL_NAME (&psymbol) = bcache (buf, namelength + 1, &objfile->psymbol_cache); | |
2363 | ||
2364 | buf = alloca (dem_namelength + 1); | |
2365 | memcpy (buf, dem_name, dem_namelength); | |
2366 | buf[dem_namelength] = '\0'; | |
c5aa993b | 2367 | |
c906108c SS |
2368 | switch (language) |
2369 | { | |
c5aa993b JM |
2370 | case language_c: |
2371 | case language_cplus: | |
2372 | SYMBOL_CPLUS_DEMANGLED_NAME (&psymbol) = | |
2373 | bcache (buf, dem_namelength + 1, &objfile->psymbol_cache); | |
2374 | break; | |
2375 | case language_chill: | |
2376 | SYMBOL_CHILL_DEMANGLED_NAME (&psymbol) = | |
2377 | bcache (buf, dem_namelength + 1, &objfile->psymbol_cache); | |
2378 | ||
c906108c SS |
2379 | /* FIXME What should be done for the default case? Ignoring for now. */ |
2380 | } | |
2381 | ||
2382 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ | |
2383 | if (val != 0) | |
2384 | { | |
2385 | SYMBOL_VALUE (&psymbol) = val; | |
2386 | } | |
2387 | else | |
2388 | { | |
2389 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; | |
2390 | } | |
2391 | SYMBOL_SECTION (&psymbol) = 0; | |
2392 | SYMBOL_LANGUAGE (&psymbol) = language; | |
2393 | PSYMBOL_NAMESPACE (&psymbol) = namespace; | |
2394 | PSYMBOL_CLASS (&psymbol) = class; | |
2395 | SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol, language); | |
2396 | ||
2397 | /* Stash the partial symbol away in the cache */ | |
2398 | psym = bcache (&psymbol, sizeof (struct partial_symbol), &objfile->psymbol_cache); | |
2399 | ||
2400 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ | |
2401 | if (list->next >= list->list + list->size) | |
2402 | { | |
2403 | extend_psymbol_list (list, objfile); | |
2404 | } | |
2405 | *list->next++ = psym; | |
2406 | OBJSTAT (objfile, n_psyms++); | |
2407 | } | |
2408 | ||
2409 | /* Initialize storage for partial symbols. */ | |
2410 | ||
2411 | void | |
fba45db2 | 2412 | init_psymbol_list (struct objfile *objfile, int total_symbols) |
c906108c SS |
2413 | { |
2414 | /* Free any previously allocated psymbol lists. */ | |
c5aa993b JM |
2415 | |
2416 | if (objfile->global_psymbols.list) | |
c906108c | 2417 | { |
c5aa993b | 2418 | mfree (objfile->md, (PTR) objfile->global_psymbols.list); |
c906108c | 2419 | } |
c5aa993b | 2420 | if (objfile->static_psymbols.list) |
c906108c | 2421 | { |
c5aa993b | 2422 | mfree (objfile->md, (PTR) objfile->static_psymbols.list); |
c906108c | 2423 | } |
c5aa993b | 2424 | |
c906108c SS |
2425 | /* Current best guess is that approximately a twentieth |
2426 | of the total symbols (in a debugging file) are global or static | |
2427 | oriented symbols */ | |
c906108c | 2428 | |
c5aa993b JM |
2429 | objfile->global_psymbols.size = total_symbols / 10; |
2430 | objfile->static_psymbols.size = total_symbols / 10; | |
2431 | ||
2432 | if (objfile->global_psymbols.size > 0) | |
c906108c | 2433 | { |
c5aa993b JM |
2434 | objfile->global_psymbols.next = |
2435 | objfile->global_psymbols.list = (struct partial_symbol **) | |
2436 | xmmalloc (objfile->md, (objfile->global_psymbols.size | |
2437 | * sizeof (struct partial_symbol *))); | |
c906108c | 2438 | } |
c5aa993b | 2439 | if (objfile->static_psymbols.size > 0) |
c906108c | 2440 | { |
c5aa993b JM |
2441 | objfile->static_psymbols.next = |
2442 | objfile->static_psymbols.list = (struct partial_symbol **) | |
2443 | xmmalloc (objfile->md, (objfile->static_psymbols.size | |
2444 | * sizeof (struct partial_symbol *))); | |
c906108c SS |
2445 | } |
2446 | } | |
2447 | ||
2448 | /* OVERLAYS: | |
2449 | The following code implements an abstraction for debugging overlay sections. | |
2450 | ||
2451 | The target model is as follows: | |
2452 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2453 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2454 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2455 | sections, one by one, from the load address into the VMA address. |
c906108c | 2456 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2457 | sections should be considered to be mapped from the VMA to the LMA. |
2458 | This information is used for symbol lookup, and memory read/write. | |
2459 | For instance, if a section has been mapped then its contents | |
2460 | should be read from the VMA, otherwise from the LMA. | |
c906108c SS |
2461 | |
2462 | Two levels of debugger support for overlays are available. One is | |
2463 | "manual", in which the debugger relies on the user to tell it which | |
2464 | overlays are currently mapped. This level of support is | |
2465 | implemented entirely in the core debugger, and the information about | |
2466 | whether a section is mapped is kept in the objfile->obj_section table. | |
2467 | ||
2468 | The second level of support is "automatic", and is only available if | |
2469 | the target-specific code provides functionality to read the target's | |
2470 | overlay mapping table, and translate its contents for the debugger | |
2471 | (by updating the mapped state information in the obj_section tables). | |
2472 | ||
2473 | The interface is as follows: | |
c5aa993b JM |
2474 | User commands: |
2475 | overlay map <name> -- tell gdb to consider this section mapped | |
2476 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2477 | overlay list -- list the sections that GDB thinks are mapped | |
2478 | overlay read-target -- get the target's state of what's mapped | |
2479 | overlay off/manual/auto -- set overlay debugging state | |
2480 | Functional interface: | |
2481 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2482 | section, return that section. | |
2483 | find_pc_overlay(pc): find any overlay section that contains | |
2484 | the pc, either in its VMA or its LMA | |
2485 | overlay_is_mapped(sect): true if overlay is marked as mapped | |
2486 | section_is_overlay(sect): true if section's VMA != LMA | |
2487 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2488 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
2489 | overlay_mapped_address(...): map an address from section's LMA to VMA | |
2490 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2491 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2492 | either in VMA or LMA depending on whether | |
2493 | the symbol's section is currently mapped | |
c906108c SS |
2494 | */ |
2495 | ||
2496 | /* Overlay debugging state: */ | |
2497 | ||
2498 | int overlay_debugging = 0; /* 0 == off, 1 == manual, -1 == auto */ | |
2499 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state */ | |
2500 | ||
2501 | /* Target vector for refreshing overlay mapped state */ | |
a14ed312 | 2502 | static void simple_overlay_update (struct obj_section *); |
507f3c78 | 2503 | void (*target_overlay_update) (struct obj_section *) = simple_overlay_update; |
c906108c SS |
2504 | |
2505 | /* Function: section_is_overlay (SECTION) | |
2506 | Returns true if SECTION has VMA not equal to LMA, ie. | |
2507 | SECTION is loaded at an address different from where it will "run". */ | |
2508 | ||
2509 | int | |
fba45db2 | 2510 | section_is_overlay (asection *section) |
c906108c SS |
2511 | { |
2512 | if (overlay_debugging) | |
2513 | if (section && section->lma != 0 && | |
2514 | section->vma != section->lma) | |
2515 | return 1; | |
2516 | ||
2517 | return 0; | |
2518 | } | |
2519 | ||
2520 | /* Function: overlay_invalidate_all (void) | |
2521 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
2522 | ||
2523 | static void | |
fba45db2 | 2524 | overlay_invalidate_all (void) |
c906108c | 2525 | { |
c5aa993b | 2526 | struct objfile *objfile; |
c906108c SS |
2527 | struct obj_section *sect; |
2528 | ||
2529 | ALL_OBJSECTIONS (objfile, sect) | |
2530 | if (section_is_overlay (sect->the_bfd_section)) | |
c5aa993b | 2531 | sect->ovly_mapped = -1; |
c906108c SS |
2532 | } |
2533 | ||
2534 | /* Function: overlay_is_mapped (SECTION) | |
2535 | Returns true if section is an overlay, and is currently mapped. | |
2536 | Private: public access is thru function section_is_mapped. | |
2537 | ||
2538 | Access to the ovly_mapped flag is restricted to this function, so | |
2539 | that we can do automatic update. If the global flag | |
2540 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
2541 | overlay_invalidate_all. If the mapped state of the particular | |
2542 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
2543 | ||
c5aa993b | 2544 | static int |
fba45db2 | 2545 | overlay_is_mapped (struct obj_section *osect) |
c906108c SS |
2546 | { |
2547 | if (osect == 0 || !section_is_overlay (osect->the_bfd_section)) | |
2548 | return 0; | |
2549 | ||
c5aa993b | 2550 | switch (overlay_debugging) |
c906108c SS |
2551 | { |
2552 | default: | |
c5aa993b JM |
2553 | case 0: |
2554 | return 0; /* overlay debugging off */ | |
c906108c SS |
2555 | case -1: /* overlay debugging automatic */ |
2556 | /* Unles there is a target_overlay_update function, | |
c5aa993b | 2557 | there's really nothing useful to do here (can't really go auto) */ |
c906108c SS |
2558 | if (target_overlay_update) |
2559 | { | |
2560 | if (overlay_cache_invalid) | |
2561 | { | |
2562 | overlay_invalidate_all (); | |
2563 | overlay_cache_invalid = 0; | |
2564 | } | |
2565 | if (osect->ovly_mapped == -1) | |
2566 | (*target_overlay_update) (osect); | |
2567 | } | |
2568 | /* fall thru to manual case */ | |
2569 | case 1: /* overlay debugging manual */ | |
2570 | return osect->ovly_mapped == 1; | |
2571 | } | |
2572 | } | |
2573 | ||
2574 | /* Function: section_is_mapped | |
2575 | Returns true if section is an overlay, and is currently mapped. */ | |
2576 | ||
2577 | int | |
fba45db2 | 2578 | section_is_mapped (asection *section) |
c906108c | 2579 | { |
c5aa993b | 2580 | struct objfile *objfile; |
c906108c SS |
2581 | struct obj_section *osect; |
2582 | ||
2583 | if (overlay_debugging) | |
2584 | if (section && section_is_overlay (section)) | |
2585 | ALL_OBJSECTIONS (objfile, osect) | |
2586 | if (osect->the_bfd_section == section) | |
c5aa993b | 2587 | return overlay_is_mapped (osect); |
c906108c SS |
2588 | |
2589 | return 0; | |
2590 | } | |
2591 | ||
2592 | /* Function: pc_in_unmapped_range | |
2593 | If PC falls into the lma range of SECTION, return true, else false. */ | |
2594 | ||
2595 | CORE_ADDR | |
fba45db2 | 2596 | pc_in_unmapped_range (CORE_ADDR pc, asection *section) |
c906108c SS |
2597 | { |
2598 | int size; | |
2599 | ||
2600 | if (overlay_debugging) | |
2601 | if (section && section_is_overlay (section)) | |
2602 | { | |
2603 | size = bfd_get_section_size_before_reloc (section); | |
2604 | if (section->lma <= pc && pc < section->lma + size) | |
2605 | return 1; | |
2606 | } | |
2607 | return 0; | |
2608 | } | |
2609 | ||
2610 | /* Function: pc_in_mapped_range | |
2611 | If PC falls into the vma range of SECTION, return true, else false. */ | |
2612 | ||
2613 | CORE_ADDR | |
fba45db2 | 2614 | pc_in_mapped_range (CORE_ADDR pc, asection *section) |
c906108c SS |
2615 | { |
2616 | int size; | |
2617 | ||
2618 | if (overlay_debugging) | |
2619 | if (section && section_is_overlay (section)) | |
2620 | { | |
2621 | size = bfd_get_section_size_before_reloc (section); | |
2622 | if (section->vma <= pc && pc < section->vma + size) | |
2623 | return 1; | |
2624 | } | |
2625 | return 0; | |
2626 | } | |
2627 | ||
2628 | /* Function: overlay_unmapped_address (PC, SECTION) | |
2629 | Returns the address corresponding to PC in the unmapped (load) range. | |
2630 | May be the same as PC. */ | |
2631 | ||
2632 | CORE_ADDR | |
fba45db2 | 2633 | overlay_unmapped_address (CORE_ADDR pc, asection *section) |
c906108c SS |
2634 | { |
2635 | if (overlay_debugging) | |
2636 | if (section && section_is_overlay (section) && | |
2637 | pc_in_mapped_range (pc, section)) | |
2638 | return pc + section->lma - section->vma; | |
2639 | ||
2640 | return pc; | |
2641 | } | |
2642 | ||
2643 | /* Function: overlay_mapped_address (PC, SECTION) | |
2644 | Returns the address corresponding to PC in the mapped (runtime) range. | |
2645 | May be the same as PC. */ | |
2646 | ||
2647 | CORE_ADDR | |
fba45db2 | 2648 | overlay_mapped_address (CORE_ADDR pc, asection *section) |
c906108c SS |
2649 | { |
2650 | if (overlay_debugging) | |
2651 | if (section && section_is_overlay (section) && | |
2652 | pc_in_unmapped_range (pc, section)) | |
2653 | return pc + section->vma - section->lma; | |
2654 | ||
2655 | return pc; | |
2656 | } | |
2657 | ||
2658 | ||
2659 | /* Function: symbol_overlayed_address | |
2660 | Return one of two addresses (relative to the VMA or to the LMA), | |
2661 | depending on whether the section is mapped or not. */ | |
2662 | ||
c5aa993b | 2663 | CORE_ADDR |
fba45db2 | 2664 | symbol_overlayed_address (CORE_ADDR address, asection *section) |
c906108c SS |
2665 | { |
2666 | if (overlay_debugging) | |
2667 | { | |
2668 | /* If the symbol has no section, just return its regular address. */ | |
2669 | if (section == 0) | |
2670 | return address; | |
2671 | /* If the symbol's section is not an overlay, just return its address */ | |
2672 | if (!section_is_overlay (section)) | |
2673 | return address; | |
2674 | /* If the symbol's section is mapped, just return its address */ | |
2675 | if (section_is_mapped (section)) | |
2676 | return address; | |
2677 | /* | |
2678 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
2679 | * then return its LOADED address rather than its vma address!! | |
2680 | */ | |
2681 | return overlay_unmapped_address (address, section); | |
2682 | } | |
2683 | return address; | |
2684 | } | |
2685 | ||
2686 | /* Function: find_pc_overlay (PC) | |
2687 | Return the best-match overlay section for PC: | |
2688 | If PC matches a mapped overlay section's VMA, return that section. | |
2689 | Else if PC matches an unmapped section's VMA, return that section. | |
2690 | Else if PC matches an unmapped section's LMA, return that section. */ | |
2691 | ||
2692 | asection * | |
fba45db2 | 2693 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 2694 | { |
c5aa993b | 2695 | struct objfile *objfile; |
c906108c SS |
2696 | struct obj_section *osect, *best_match = NULL; |
2697 | ||
2698 | if (overlay_debugging) | |
2699 | ALL_OBJSECTIONS (objfile, osect) | |
2700 | if (section_is_overlay (osect->the_bfd_section)) | |
c5aa993b JM |
2701 | { |
2702 | if (pc_in_mapped_range (pc, osect->the_bfd_section)) | |
2703 | { | |
2704 | if (overlay_is_mapped (osect)) | |
2705 | return osect->the_bfd_section; | |
2706 | else | |
2707 | best_match = osect; | |
2708 | } | |
2709 | else if (pc_in_unmapped_range (pc, osect->the_bfd_section)) | |
2710 | best_match = osect; | |
2711 | } | |
c906108c SS |
2712 | return best_match ? best_match->the_bfd_section : NULL; |
2713 | } | |
2714 | ||
2715 | /* Function: find_pc_mapped_section (PC) | |
2716 | If PC falls into the VMA address range of an overlay section that is | |
2717 | currently marked as MAPPED, return that section. Else return NULL. */ | |
2718 | ||
2719 | asection * | |
fba45db2 | 2720 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 2721 | { |
c5aa993b | 2722 | struct objfile *objfile; |
c906108c SS |
2723 | struct obj_section *osect; |
2724 | ||
2725 | if (overlay_debugging) | |
2726 | ALL_OBJSECTIONS (objfile, osect) | |
2727 | if (pc_in_mapped_range (pc, osect->the_bfd_section) && | |
2728 | overlay_is_mapped (osect)) | |
c5aa993b | 2729 | return osect->the_bfd_section; |
c906108c SS |
2730 | |
2731 | return NULL; | |
2732 | } | |
2733 | ||
2734 | /* Function: list_overlays_command | |
2735 | Print a list of mapped sections and their PC ranges */ | |
2736 | ||
2737 | void | |
fba45db2 | 2738 | list_overlays_command (char *args, int from_tty) |
c906108c | 2739 | { |
c5aa993b JM |
2740 | int nmapped = 0; |
2741 | struct objfile *objfile; | |
c906108c SS |
2742 | struct obj_section *osect; |
2743 | ||
2744 | if (overlay_debugging) | |
2745 | ALL_OBJSECTIONS (objfile, osect) | |
2746 | if (overlay_is_mapped (osect)) | |
c5aa993b JM |
2747 | { |
2748 | const char *name; | |
2749 | bfd_vma lma, vma; | |
2750 | int size; | |
2751 | ||
2752 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
2753 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
2754 | size = bfd_get_section_size_before_reloc (osect->the_bfd_section); | |
2755 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); | |
2756 | ||
2757 | printf_filtered ("Section %s, loaded at ", name); | |
2758 | print_address_numeric (lma, 1, gdb_stdout); | |
2759 | puts_filtered (" - "); | |
2760 | print_address_numeric (lma + size, 1, gdb_stdout); | |
2761 | printf_filtered (", mapped at "); | |
2762 | print_address_numeric (vma, 1, gdb_stdout); | |
2763 | puts_filtered (" - "); | |
2764 | print_address_numeric (vma + size, 1, gdb_stdout); | |
2765 | puts_filtered ("\n"); | |
2766 | ||
2767 | nmapped++; | |
2768 | } | |
c906108c SS |
2769 | if (nmapped == 0) |
2770 | printf_filtered ("No sections are mapped.\n"); | |
2771 | } | |
2772 | ||
2773 | /* Function: map_overlay_command | |
2774 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
2775 | ||
2776 | void | |
fba45db2 | 2777 | map_overlay_command (char *args, int from_tty) |
c906108c | 2778 | { |
c5aa993b JM |
2779 | struct objfile *objfile, *objfile2; |
2780 | struct obj_section *sec, *sec2; | |
2781 | asection *bfdsec; | |
c906108c SS |
2782 | |
2783 | if (!overlay_debugging) | |
515ad16c EZ |
2784 | error ("\ |
2785 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ | |
2786 | the 'overlay manual' command."); | |
c906108c SS |
2787 | |
2788 | if (args == 0 || *args == 0) | |
2789 | error ("Argument required: name of an overlay section"); | |
2790 | ||
2791 | /* First, find a section matching the user supplied argument */ | |
2792 | ALL_OBJSECTIONS (objfile, sec) | |
2793 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
2794 | { |
2795 | /* Now, check to see if the section is an overlay. */ | |
2796 | bfdsec = sec->the_bfd_section; | |
2797 | if (!section_is_overlay (bfdsec)) | |
2798 | continue; /* not an overlay section */ | |
2799 | ||
2800 | /* Mark the overlay as "mapped" */ | |
2801 | sec->ovly_mapped = 1; | |
2802 | ||
2803 | /* Next, make a pass and unmap any sections that are | |
2804 | overlapped by this new section: */ | |
2805 | ALL_OBJSECTIONS (objfile2, sec2) | |
2806 | if (sec2->ovly_mapped && | |
2807 | sec != sec2 && | |
2808 | sec->the_bfd_section != sec2->the_bfd_section && | |
2809 | (pc_in_mapped_range (sec2->addr, sec->the_bfd_section) || | |
2810 | pc_in_mapped_range (sec2->endaddr, sec->the_bfd_section))) | |
2811 | { | |
2812 | if (info_verbose) | |
2813 | printf_filtered ("Note: section %s unmapped by overlap\n", | |
2814 | bfd_section_name (objfile->obfd, | |
2815 | sec2->the_bfd_section)); | |
2816 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2 */ | |
2817 | } | |
2818 | return; | |
2819 | } | |
c906108c SS |
2820 | error ("No overlay section called %s", args); |
2821 | } | |
2822 | ||
2823 | /* Function: unmap_overlay_command | |
2824 | Mark the overlay section as unmapped | |
2825 | (ie. resident in its LMA address range, rather than the VMA range). */ | |
2826 | ||
2827 | void | |
fba45db2 | 2828 | unmap_overlay_command (char *args, int from_tty) |
c906108c | 2829 | { |
c5aa993b | 2830 | struct objfile *objfile; |
c906108c SS |
2831 | struct obj_section *sec; |
2832 | ||
2833 | if (!overlay_debugging) | |
515ad16c EZ |
2834 | error ("\ |
2835 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ | |
2836 | the 'overlay manual' command."); | |
c906108c SS |
2837 | |
2838 | if (args == 0 || *args == 0) | |
2839 | error ("Argument required: name of an overlay section"); | |
2840 | ||
2841 | /* First, find a section matching the user supplied argument */ | |
2842 | ALL_OBJSECTIONS (objfile, sec) | |
2843 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
2844 | { |
2845 | if (!sec->ovly_mapped) | |
2846 | error ("Section %s is not mapped", args); | |
2847 | sec->ovly_mapped = 0; | |
2848 | return; | |
2849 | } | |
c906108c SS |
2850 | error ("No overlay section called %s", args); |
2851 | } | |
2852 | ||
2853 | /* Function: overlay_auto_command | |
2854 | A utility command to turn on overlay debugging. | |
2855 | Possibly this should be done via a set/show command. */ | |
2856 | ||
2857 | static void | |
fba45db2 | 2858 | overlay_auto_command (char *args, int from_tty) |
c906108c SS |
2859 | { |
2860 | overlay_debugging = -1; | |
2861 | if (info_verbose) | |
2862 | printf_filtered ("Automatic overlay debugging enabled."); | |
2863 | } | |
2864 | ||
2865 | /* Function: overlay_manual_command | |
2866 | A utility command to turn on overlay debugging. | |
2867 | Possibly this should be done via a set/show command. */ | |
2868 | ||
2869 | static void | |
fba45db2 | 2870 | overlay_manual_command (char *args, int from_tty) |
c906108c SS |
2871 | { |
2872 | overlay_debugging = 1; | |
2873 | if (info_verbose) | |
2874 | printf_filtered ("Overlay debugging enabled."); | |
2875 | } | |
2876 | ||
2877 | /* Function: overlay_off_command | |
2878 | A utility command to turn on overlay debugging. | |
2879 | Possibly this should be done via a set/show command. */ | |
2880 | ||
2881 | static void | |
fba45db2 | 2882 | overlay_off_command (char *args, int from_tty) |
c906108c | 2883 | { |
c5aa993b | 2884 | overlay_debugging = 0; |
c906108c SS |
2885 | if (info_verbose) |
2886 | printf_filtered ("Overlay debugging disabled."); | |
2887 | } | |
2888 | ||
2889 | static void | |
fba45db2 | 2890 | overlay_load_command (char *args, int from_tty) |
c906108c SS |
2891 | { |
2892 | if (target_overlay_update) | |
2893 | (*target_overlay_update) (NULL); | |
2894 | else | |
2895 | error ("This target does not know how to read its overlay state."); | |
2896 | } | |
2897 | ||
2898 | /* Function: overlay_command | |
2899 | A place-holder for a mis-typed command */ | |
2900 | ||
2901 | /* Command list chain containing all defined "overlay" subcommands. */ | |
2902 | struct cmd_list_element *overlaylist; | |
2903 | ||
2904 | static void | |
fba45db2 | 2905 | overlay_command (char *args, int from_tty) |
c906108c | 2906 | { |
c5aa993b | 2907 | printf_unfiltered |
c906108c SS |
2908 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
2909 | help_list (overlaylist, "overlay ", -1, gdb_stdout); | |
2910 | } | |
2911 | ||
2912 | ||
2913 | /* Target Overlays for the "Simplest" overlay manager: | |
2914 | ||
2915 | This is GDB's default target overlay layer. It works with the | |
2916 | minimal overlay manager supplied as an example by Cygnus. The | |
2917 | entry point is via a function pointer "target_overlay_update", | |
2918 | so targets that use a different runtime overlay manager can | |
2919 | substitute their own overlay_update function and take over the | |
2920 | function pointer. | |
2921 | ||
2922 | The overlay_update function pokes around in the target's data structures | |
2923 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
2924 | this information. | |
2925 | ||
2926 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
2927 | unsigned _novlys; /# number of overlay sections #/ |
2928 | unsigned _ovly_table[_novlys][4] = { | |
2929 | {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/ | |
2930 | {..., ..., ..., ...}, | |
2931 | } | |
2932 | unsigned _novly_regions; /# number of overlay regions #/ | |
2933 | unsigned _ovly_region_table[_novly_regions][3] = { | |
2934 | {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ | |
2935 | {..., ..., ...}, | |
2936 | } | |
c906108c SS |
2937 | These functions will attempt to update GDB's mappedness state in the |
2938 | symbol section table, based on the target's mappedness state. | |
2939 | ||
2940 | To do this, we keep a cached copy of the target's _ovly_table, and | |
2941 | attempt to detect when the cached copy is invalidated. The main | |
2942 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
2943 | the cached table and re-reads only the entry for that section from | |
2944 | the target (whenever possible). | |
2945 | */ | |
2946 | ||
2947 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 2948 | static unsigned (*cache_ovly_table)[4] = 0; |
c906108c | 2949 | #if 0 |
c5aa993b | 2950 | static unsigned (*cache_ovly_region_table)[3] = 0; |
c906108c | 2951 | #endif |
c5aa993b | 2952 | static unsigned cache_novlys = 0; |
c906108c | 2953 | #if 0 |
c5aa993b | 2954 | static unsigned cache_novly_regions = 0; |
c906108c SS |
2955 | #endif |
2956 | static CORE_ADDR cache_ovly_table_base = 0; | |
2957 | #if 0 | |
2958 | static CORE_ADDR cache_ovly_region_table_base = 0; | |
2959 | #endif | |
c5aa993b JM |
2960 | enum ovly_index |
2961 | { | |
2962 | VMA, SIZE, LMA, MAPPED | |
2963 | }; | |
c906108c SS |
2964 | #define TARGET_LONG_BYTES (TARGET_LONG_BIT / TARGET_CHAR_BIT) |
2965 | ||
2966 | /* Throw away the cached copy of _ovly_table */ | |
2967 | static void | |
fba45db2 | 2968 | simple_free_overlay_table (void) |
c906108c SS |
2969 | { |
2970 | if (cache_ovly_table) | |
b8c9b27d | 2971 | xfree (cache_ovly_table); |
c5aa993b | 2972 | cache_novlys = 0; |
c906108c SS |
2973 | cache_ovly_table = NULL; |
2974 | cache_ovly_table_base = 0; | |
2975 | } | |
2976 | ||
2977 | #if 0 | |
2978 | /* Throw away the cached copy of _ovly_region_table */ | |
2979 | static void | |
fba45db2 | 2980 | simple_free_overlay_region_table (void) |
c906108c SS |
2981 | { |
2982 | if (cache_ovly_region_table) | |
b8c9b27d | 2983 | xfree (cache_ovly_region_table); |
c5aa993b | 2984 | cache_novly_regions = 0; |
c906108c SS |
2985 | cache_ovly_region_table = NULL; |
2986 | cache_ovly_region_table_base = 0; | |
2987 | } | |
2988 | #endif | |
2989 | ||
2990 | /* Read an array of ints from the target into a local buffer. | |
2991 | Convert to host order. int LEN is number of ints */ | |
2992 | static void | |
fba45db2 | 2993 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, int len) |
c906108c SS |
2994 | { |
2995 | char *buf = alloca (len * TARGET_LONG_BYTES); | |
c5aa993b | 2996 | int i; |
c906108c SS |
2997 | |
2998 | read_memory (memaddr, buf, len * TARGET_LONG_BYTES); | |
2999 | for (i = 0; i < len; i++) | |
c5aa993b | 3000 | myaddr[i] = extract_unsigned_integer (TARGET_LONG_BYTES * i + buf, |
c906108c SS |
3001 | TARGET_LONG_BYTES); |
3002 | } | |
3003 | ||
3004 | /* Find and grab a copy of the target _ovly_table | |
3005 | (and _novlys, which is needed for the table's size) */ | |
c5aa993b | 3006 | static int |
fba45db2 | 3007 | simple_read_overlay_table (void) |
c906108c SS |
3008 | { |
3009 | struct minimal_symbol *msym; | |
3010 | ||
3011 | simple_free_overlay_table (); | |
3012 | msym = lookup_minimal_symbol ("_novlys", 0, 0); | |
3013 | if (msym != NULL) | |
3014 | cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (msym), 4); | |
c5aa993b JM |
3015 | else |
3016 | return 0; /* failure */ | |
3017 | cache_ovly_table = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); | |
c906108c SS |
3018 | if (cache_ovly_table != NULL) |
3019 | { | |
3020 | msym = lookup_minimal_symbol ("_ovly_table", 0, 0); | |
3021 | if (msym != NULL) | |
3022 | { | |
3023 | cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (msym); | |
c5aa993b JM |
3024 | read_target_long_array (cache_ovly_table_base, |
3025 | (int *) cache_ovly_table, | |
c906108c SS |
3026 | cache_novlys * 4); |
3027 | } | |
c5aa993b JM |
3028 | else |
3029 | return 0; /* failure */ | |
c906108c | 3030 | } |
c5aa993b JM |
3031 | else |
3032 | return 0; /* failure */ | |
3033 | return 1; /* SUCCESS */ | |
c906108c SS |
3034 | } |
3035 | ||
3036 | #if 0 | |
3037 | /* Find and grab a copy of the target _ovly_region_table | |
3038 | (and _novly_regions, which is needed for the table's size) */ | |
c5aa993b | 3039 | static int |
fba45db2 | 3040 | simple_read_overlay_region_table (void) |
c906108c SS |
3041 | { |
3042 | struct minimal_symbol *msym; | |
3043 | ||
3044 | simple_free_overlay_region_table (); | |
3045 | msym = lookup_minimal_symbol ("_novly_regions", 0, 0); | |
3046 | if (msym != NULL) | |
3047 | cache_novly_regions = read_memory_integer (SYMBOL_VALUE_ADDRESS (msym), 4); | |
c5aa993b JM |
3048 | else |
3049 | return 0; /* failure */ | |
c906108c SS |
3050 | cache_ovly_region_table = (void *) xmalloc (cache_novly_regions * 12); |
3051 | if (cache_ovly_region_table != NULL) | |
3052 | { | |
3053 | msym = lookup_minimal_symbol ("_ovly_region_table", 0, 0); | |
3054 | if (msym != NULL) | |
3055 | { | |
3056 | cache_ovly_region_table_base = SYMBOL_VALUE_ADDRESS (msym); | |
c5aa993b JM |
3057 | read_target_long_array (cache_ovly_region_table_base, |
3058 | (int *) cache_ovly_region_table, | |
c906108c SS |
3059 | cache_novly_regions * 3); |
3060 | } | |
c5aa993b JM |
3061 | else |
3062 | return 0; /* failure */ | |
c906108c | 3063 | } |
c5aa993b JM |
3064 | else |
3065 | return 0; /* failure */ | |
3066 | return 1; /* SUCCESS */ | |
c906108c SS |
3067 | } |
3068 | #endif | |
3069 | ||
3070 | /* Function: simple_overlay_update_1 | |
3071 | A helper function for simple_overlay_update. Assuming a cached copy | |
3072 | of _ovly_table exists, look through it to find an entry whose vma, | |
3073 | lma and size match those of OSECT. Re-read the entry and make sure | |
3074 | it still matches OSECT (else the table may no longer be valid). | |
3075 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3076 | success, 0 for failure. */ | |
3077 | ||
3078 | static int | |
fba45db2 | 3079 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c SS |
3080 | { |
3081 | int i, size; | |
3082 | ||
3083 | size = bfd_get_section_size_before_reloc (osect->the_bfd_section); | |
3084 | for (i = 0; i < cache_novlys; i++) | |
c5aa993b JM |
3085 | if (cache_ovly_table[i][VMA] == osect->the_bfd_section->vma && |
3086 | cache_ovly_table[i][LMA] == osect->the_bfd_section->lma /* && | |
3087 | cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3088 | { |
3089 | read_target_long_array (cache_ovly_table_base + i * TARGET_LONG_BYTES, | |
3090 | (int *) cache_ovly_table[i], 4); | |
c5aa993b JM |
3091 | if (cache_ovly_table[i][VMA] == osect->the_bfd_section->vma && |
3092 | cache_ovly_table[i][LMA] == osect->the_bfd_section->lma /* && | |
3093 | cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3094 | { |
3095 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3096 | return 1; | |
3097 | } | |
c5aa993b | 3098 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3099 | return 0; |
3100 | } | |
3101 | return 0; | |
3102 | } | |
3103 | ||
3104 | /* Function: simple_overlay_update | |
3105 | If OSECT is NULL, then update all sections' mapped state | |
3106 | (after re-reading the entire target _ovly_table). | |
3107 | If OSECT is non-NULL, then try to find a matching entry in the | |
3108 | cached ovly_table and update only OSECT's mapped state. | |
3109 | If a cached entry can't be found or the cache isn't valid, then | |
3110 | re-read the entire cache, and go ahead and update all sections. */ | |
3111 | ||
3112 | static void | |
fba45db2 | 3113 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3114 | { |
c5aa993b | 3115 | struct objfile *objfile; |
c906108c SS |
3116 | |
3117 | /* Were we given an osect to look up? NULL means do all of them. */ | |
3118 | if (osect) | |
3119 | /* Have we got a cached copy of the target's overlay table? */ | |
3120 | if (cache_ovly_table != NULL) | |
3121 | /* Does its cached location match what's currently in the symtab? */ | |
c5aa993b | 3122 | if (cache_ovly_table_base == |
c906108c SS |
3123 | SYMBOL_VALUE_ADDRESS (lookup_minimal_symbol ("_ovly_table", 0, 0))) |
3124 | /* Then go ahead and try to look up this single section in the cache */ | |
3125 | if (simple_overlay_update_1 (osect)) | |
3126 | /* Found it! We're done. */ | |
3127 | return; | |
3128 | ||
3129 | /* Cached table no good: need to read the entire table anew. | |
3130 | Or else we want all the sections, in which case it's actually | |
3131 | more efficient to read the whole table in one block anyway. */ | |
3132 | ||
3133 | if (simple_read_overlay_table () == 0) /* read failed? No table? */ | |
3134 | { | |
3135 | warning ("Failed to read the target overlay mapping table."); | |
3136 | return; | |
3137 | } | |
3138 | /* Now may as well update all sections, even if only one was requested. */ | |
3139 | ALL_OBJSECTIONS (objfile, osect) | |
3140 | if (section_is_overlay (osect->the_bfd_section)) | |
c5aa993b JM |
3141 | { |
3142 | int i, size; | |
3143 | ||
3144 | size = bfd_get_section_size_before_reloc (osect->the_bfd_section); | |
3145 | for (i = 0; i < cache_novlys; i++) | |
3146 | if (cache_ovly_table[i][VMA] == osect->the_bfd_section->vma && | |
3147 | cache_ovly_table[i][LMA] == osect->the_bfd_section->lma /* && | |
3148 | cache_ovly_table[i][SIZE] == size */ ) | |
3149 | { /* obj_section matches i'th entry in ovly_table */ | |
3150 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3151 | break; /* finished with inner for loop: break out */ | |
3152 | } | |
3153 | } | |
c906108c SS |
3154 | } |
3155 | ||
3156 | ||
3157 | void | |
fba45db2 | 3158 | _initialize_symfile (void) |
c906108c SS |
3159 | { |
3160 | struct cmd_list_element *c; | |
c5aa993b | 3161 | |
c906108c | 3162 | c = add_cmd ("symbol-file", class_files, symbol_file_command, |
c5aa993b | 3163 | "Load symbol table from executable file FILE.\n\ |
c906108c SS |
3164 | The `file' command can also load symbol tables, as well as setting the file\n\ |
3165 | to execute.", &cmdlist); | |
3166 | c->completer = filename_completer; | |
3167 | ||
3168 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, | |
db162d44 | 3169 | "Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR> ...]\n\ |
c906108c | 3170 | Load the symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
2acceee2 | 3171 | ADDR is the starting address of the file's text.\n\ |
db162d44 EZ |
3172 | The optional arguments are section-name section-address pairs and\n\ |
3173 | should be specified if the data and bss segments are not contiguous\n\ | |
3174 | with the text. SECT is a section name to be loaded at SECT_ADDR.", | |
c906108c SS |
3175 | &cmdlist); |
3176 | c->completer = filename_completer; | |
3177 | ||
3178 | c = add_cmd ("add-shared-symbol-files", class_files, | |
3179 | add_shared_symbol_files_command, | |
3180 | "Load the symbols from shared objects in the dynamic linker's link map.", | |
c5aa993b | 3181 | &cmdlist); |
c906108c SS |
3182 | c = add_alias_cmd ("assf", "add-shared-symbol-files", class_files, 1, |
3183 | &cmdlist); | |
3184 | ||
3185 | c = add_cmd ("load", class_files, load_command, | |
c5aa993b | 3186 | "Dynamically load FILE into the running program, and record its symbols\n\ |
c906108c SS |
3187 | for access from GDB.", &cmdlist); |
3188 | c->completer = filename_completer; | |
3189 | ||
3190 | add_show_from_set | |
3191 | (add_set_cmd ("symbol-reloading", class_support, var_boolean, | |
c5aa993b JM |
3192 | (char *) &symbol_reloading, |
3193 | "Set dynamic symbol table reloading multiple times in one run.", | |
c906108c SS |
3194 | &setlist), |
3195 | &showlist); | |
3196 | ||
c5aa993b JM |
3197 | add_prefix_cmd ("overlay", class_support, overlay_command, |
3198 | "Commands for debugging overlays.", &overlaylist, | |
c906108c SS |
3199 | "overlay ", 0, &cmdlist); |
3200 | ||
3201 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3202 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3203 | ||
c5aa993b | 3204 | add_cmd ("map-overlay", class_support, map_overlay_command, |
c906108c SS |
3205 | "Assert that an overlay section is mapped.", &overlaylist); |
3206 | ||
c5aa993b | 3207 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
c906108c SS |
3208 | "Assert that an overlay section is unmapped.", &overlaylist); |
3209 | ||
c5aa993b | 3210 | add_cmd ("list-overlays", class_support, list_overlays_command, |
c906108c SS |
3211 | "List mappings of overlay sections.", &overlaylist); |
3212 | ||
c5aa993b | 3213 | add_cmd ("manual", class_support, overlay_manual_command, |
c906108c | 3214 | "Enable overlay debugging.", &overlaylist); |
c5aa993b | 3215 | add_cmd ("off", class_support, overlay_off_command, |
c906108c | 3216 | "Disable overlay debugging.", &overlaylist); |
c5aa993b | 3217 | add_cmd ("auto", class_support, overlay_auto_command, |
c906108c | 3218 | "Enable automatic overlay debugging.", &overlaylist); |
c5aa993b | 3219 | add_cmd ("load-target", class_support, overlay_load_command, |
c906108c SS |
3220 | "Read the overlay mapping state from the target.", &overlaylist); |
3221 | ||
3222 | /* Filename extension to source language lookup table: */ | |
3223 | init_filename_language_table (); | |
3224 | c = add_set_cmd ("extension-language", class_files, var_string_noescape, | |
c5aa993b | 3225 | (char *) &ext_args, |
c906108c SS |
3226 | "Set mapping between filename extension and source language.\n\ |
3227 | Usage: set extension-language .foo bar", | |
c5aa993b | 3228 | &setlist); |
c906108c SS |
3229 | c->function.cfunc = set_ext_lang_command; |
3230 | ||
c5aa993b | 3231 | add_info ("extensions", info_ext_lang_command, |
c906108c | 3232 | "All filename extensions associated with a source language."); |
917317f4 JM |
3233 | |
3234 | add_show_from_set | |
3235 | (add_set_cmd ("download-write-size", class_obscure, | |
3236 | var_integer, (char *) &download_write_size, | |
3237 | "Set the write size used when downloading a program.\n" | |
3238 | "Only used when downloading a program onto a remote\n" | |
3239 | "target. Specify zero, or a negative value, to disable\n" | |
3240 | "blocked writes. The actual size of each transfer is also\n" | |
3241 | "limited by the size of the target packet and the memory\n" | |
3242 | "cache.\n", | |
3243 | &setlist), | |
3244 | &showlist); | |
c906108c | 3245 | } |