Commit | Line | Data |
---|---|---|
be4d1333 | 1 | /* Generate a core file for the inferior process. |
1bac305b | 2 | |
9b254dd1 | 3 | Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 |
804e0f53 | 4 | Free Software Foundation, Inc. |
be4d1333 MS |
5 | |
6 | This file is part of GDB. | |
7 | ||
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 | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
be4d1333 MS |
11 | (at your option) any later version. |
12 | ||
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. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
be4d1333 MS |
20 | |
21 | #include "defs.h" | |
d3420b2f MK |
22 | #include "elf-bfd.h" |
23 | #include "infcall.h" | |
be4d1333 MS |
24 | #include "inferior.h" |
25 | #include "gdbcore.h" | |
be4d1333 | 26 | #include "objfiles.h" |
d3420b2f MK |
27 | #include "symfile.h" |
28 | ||
29 | #include "cli/cli-decode.h" | |
be4d1333 | 30 | |
d3420b2f | 31 | #include "gdb_assert.h" |
be4d1333 | 32 | |
804e0f53 DJ |
33 | /* The largest amount of memory to read from the target at once. We |
34 | must throttle it to limit the amount of memory used by GDB during | |
35 | generate-core-file for programs with large resident data. */ | |
36 | #define MAX_COPY_BYTES (1024 * 1024) | |
37 | ||
d3420b2f MK |
38 | static char *default_gcore_target (void); |
39 | static enum bfd_architecture default_gcore_arch (void); | |
40 | static unsigned long default_gcore_mach (void); | |
41 | static int gcore_memory_sections (bfd *); | |
42 | ||
43 | /* Generate a core file from the inferior process. */ | |
be4d1333 MS |
44 | |
45 | static void | |
46 | gcore_command (char *args, int from_tty) | |
47 | { | |
48 | struct cleanup *old_chain; | |
49 | char *corefilename, corefilename_buffer[40]; | |
356ae49d | 50 | asection *note_sec = NULL; |
be4d1333 MS |
51 | bfd *obfd; |
52 | void *note_data = NULL; | |
53 | int note_size = 0; | |
54 | ||
55 | /* No use generating a corefile without a target process. */ | |
d3420b2f | 56 | if (!target_has_execution) |
be4d1333 MS |
57 | noprocess (); |
58 | ||
59 | if (args && *args) | |
60 | corefilename = args; | |
61 | else | |
62 | { | |
63 | /* Default corefile name is "core.PID". */ | |
64 | sprintf (corefilename_buffer, "core.%d", PIDGET (inferior_ptid)); | |
65 | corefilename = corefilename_buffer; | |
66 | } | |
67 | ||
68 | if (info_verbose) | |
cbb83bd1 | 69 | fprintf_filtered (gdb_stdout, |
be4d1333 MS |
70 | "Opening corefile '%s' for output.\n", corefilename); |
71 | ||
d3420b2f MK |
72 | /* Open the output file. */ |
73 | obfd = bfd_openw (corefilename, default_gcore_target ()); | |
74 | if (!obfd) | |
8a3fe4f8 | 75 | error (_("Failed to open '%s' for output."), corefilename); |
be4d1333 | 76 | |
d3420b2f | 77 | /* Need a cleanup that will close the file (FIXME: delete it?). */ |
be4d1333 MS |
78 | old_chain = make_cleanup_bfd_close (obfd); |
79 | ||
80 | bfd_set_format (obfd, bfd_core); | |
81 | bfd_set_arch_mach (obfd, default_gcore_arch (), default_gcore_mach ()); | |
82 | ||
d3420b2f MK |
83 | /* An external target method must build the notes section. */ |
84 | note_data = target_make_corefile_notes (obfd, ¬e_size); | |
be4d1333 | 85 | |
d3420b2f | 86 | /* Create the note section. */ |
be4d1333 MS |
87 | if (note_data != NULL && note_size != 0) |
88 | { | |
52b57208 L |
89 | note_sec = bfd_make_section_anyway_with_flags (obfd, "note0", |
90 | SEC_HAS_CONTENTS | |
91 | | SEC_READONLY | |
92 | | SEC_ALLOC); | |
d3420b2f | 93 | if (note_sec == NULL) |
8a3fe4f8 | 94 | error (_("Failed to create 'note' section for corefile: %s"), |
be4d1333 MS |
95 | bfd_errmsg (bfd_get_error ())); |
96 | ||
97 | bfd_set_section_vma (obfd, note_sec, 0); | |
be4d1333 MS |
98 | bfd_set_section_alignment (obfd, note_sec, 0); |
99 | bfd_set_section_size (obfd, note_sec, note_size); | |
100 | } | |
101 | ||
d3420b2f | 102 | /* Now create the memory/load sections. */ |
be4d1333 | 103 | if (gcore_memory_sections (obfd) == 0) |
8a3fe4f8 | 104 | error (_("gcore: failed to get corefile memory sections from target.")); |
be4d1333 | 105 | |
d3420b2f | 106 | /* Write out the contents of the note section. */ |
be4d1333 MS |
107 | if (note_data != NULL && note_size != 0) |
108 | { | |
109 | if (!bfd_set_section_contents (obfd, note_sec, note_data, 0, note_size)) | |
8a3fe4f8 | 110 | warning (_("writing note section (%s)"), bfd_errmsg (bfd_get_error ())); |
be4d1333 MS |
111 | } |
112 | ||
d3420b2f MK |
113 | /* Succeeded. */ |
114 | fprintf_filtered (gdb_stdout, "Saved corefile %s\n", corefilename); | |
be4d1333 | 115 | |
d3420b2f | 116 | /* Clean-ups will close the output file and free malloc memory. */ |
be4d1333 MS |
117 | do_cleanups (old_chain); |
118 | return; | |
119 | } | |
120 | ||
121 | static unsigned long | |
122 | default_gcore_mach (void) | |
123 | { | |
d3420b2f | 124 | #if 1 /* See if this even matters... */ |
6dbdc4a3 MS |
125 | return 0; |
126 | #else | |
1143fffb UW |
127 | |
128 | const struct bfd_arch_info *bfdarch = gdbarch_bfd_arch_info (current_gdbarch); | |
be4d1333 MS |
129 | |
130 | if (bfdarch != NULL) | |
131 | return bfdarch->mach; | |
be4d1333 | 132 | if (exec_bfd == NULL) |
8a3fe4f8 | 133 | error (_("Can't find default bfd machine type (need execfile).")); |
be4d1333 MS |
134 | |
135 | return bfd_get_mach (exec_bfd); | |
6dbdc4a3 | 136 | #endif /* 1 */ |
be4d1333 MS |
137 | } |
138 | ||
139 | static enum bfd_architecture | |
140 | default_gcore_arch (void) | |
141 | { | |
1143fffb UW |
142 | const struct bfd_arch_info * bfdarch = gdbarch_bfd_arch_info |
143 | (current_gdbarch); | |
be4d1333 MS |
144 | |
145 | if (bfdarch != NULL) | |
146 | return bfdarch->arch; | |
be4d1333 | 147 | if (exec_bfd == NULL) |
8a3fe4f8 | 148 | error (_("Can't find bfd architecture for corefile (need execfile).")); |
be4d1333 MS |
149 | |
150 | return bfd_get_arch (exec_bfd); | |
151 | } | |
152 | ||
153 | static char * | |
154 | default_gcore_target (void) | |
155 | { | |
d3420b2f | 156 | /* FIXME: This may only work for ELF targets. */ |
be4d1333 | 157 | if (exec_bfd == NULL) |
6dbdc4a3 MS |
158 | return NULL; |
159 | else | |
160 | return bfd_get_target (exec_bfd); | |
be4d1333 MS |
161 | } |
162 | ||
d3420b2f MK |
163 | /* Derive a reasonable stack segment by unwinding the target stack, |
164 | and store its limits in *BOTTOM and *TOP. Return non-zero if | |
165 | successful. */ | |
be4d1333 | 166 | |
cbb83bd1 | 167 | static int |
69db8bae | 168 | derive_stack_segment (bfd_vma *bottom, bfd_vma *top) |
be4d1333 | 169 | { |
be4d1333 MS |
170 | struct frame_info *fi, *tmp_fi; |
171 | ||
d3420b2f MK |
172 | gdb_assert (bottom); |
173 | gdb_assert (top); | |
be4d1333 | 174 | |
d3420b2f | 175 | /* Can't succeed without stack and registers. */ |
be4d1333 | 176 | if (!target_has_stack || !target_has_registers) |
d3420b2f | 177 | return 0; |
be4d1333 | 178 | |
d3420b2f MK |
179 | /* Can't succeed without current frame. */ |
180 | fi = get_current_frame (); | |
181 | if (fi == NULL) | |
182 | return 0; | |
be4d1333 | 183 | |
d3420b2f | 184 | /* Save frame pointer of TOS frame. */ |
8d357cca | 185 | *top = get_frame_base (fi); |
d3420b2f | 186 | /* If current stack pointer is more "inner", use that instead. */ |
40a6adc1 | 187 | if (gdbarch_inner_than (get_frame_arch (fi), get_frame_sp (fi), *top)) |
fb4443d8 | 188 | *top = get_frame_sp (fi); |
be4d1333 | 189 | |
d3420b2f | 190 | /* Find prev-most frame. */ |
be4d1333 MS |
191 | while ((tmp_fi = get_prev_frame (fi)) != NULL) |
192 | fi = tmp_fi; | |
193 | ||
d3420b2f | 194 | /* Save frame pointer of prev-most frame. */ |
8d357cca | 195 | *bottom = get_frame_base (fi); |
be4d1333 | 196 | |
d3420b2f MK |
197 | /* Now canonicalize their order, so that BOTTOM is a lower address |
198 | (as opposed to a lower stack frame). */ | |
be4d1333 MS |
199 | if (*bottom > *top) |
200 | { | |
d3420b2f MK |
201 | bfd_vma tmp_vma; |
202 | ||
be4d1333 MS |
203 | tmp_vma = *top; |
204 | *top = *bottom; | |
205 | *bottom = tmp_vma; | |
206 | } | |
207 | ||
d3420b2f | 208 | return 1; |
be4d1333 MS |
209 | } |
210 | ||
d3420b2f MK |
211 | /* Derive a reasonable heap segment for ABFD by looking at sbrk and |
212 | the static data sections. Store its limits in *BOTTOM and *TOP. | |
213 | Return non-zero if successful. */ | |
be4d1333 | 214 | |
cbb83bd1 | 215 | static int |
69db8bae | 216 | derive_heap_segment (bfd *abfd, bfd_vma *bottom, bfd_vma *top) |
be4d1333 MS |
217 | { |
218 | bfd_vma top_of_data_memory = 0; | |
219 | bfd_vma top_of_heap = 0; | |
220 | bfd_size_type sec_size; | |
221 | struct value *zero, *sbrk; | |
222 | bfd_vma sec_vaddr; | |
223 | asection *sec; | |
224 | ||
d3420b2f MK |
225 | gdb_assert (bottom); |
226 | gdb_assert (top); | |
be4d1333 | 227 | |
d3420b2f MK |
228 | /* This function depends on being able to call a function in the |
229 | inferior. */ | |
be4d1333 | 230 | if (!target_has_execution) |
d3420b2f MK |
231 | return 0; |
232 | ||
233 | /* The following code assumes that the link map is arranged as | |
234 | follows (low to high addresses): | |
be4d1333 | 235 | |
d3420b2f MK |
236 | --------------------------------- |
237 | | text sections | | |
238 | --------------------------------- | |
239 | | data sections (including bss) | | |
240 | --------------------------------- | |
241 | | heap | | |
242 | --------------------------------- */ | |
be4d1333 MS |
243 | |
244 | for (sec = abfd->sections; sec; sec = sec->next) | |
245 | { | |
d3420b2f MK |
246 | if (bfd_get_section_flags (abfd, sec) & SEC_DATA |
247 | || strcmp (".bss", bfd_section_name (abfd, sec)) == 0) | |
be4d1333 MS |
248 | { |
249 | sec_vaddr = bfd_get_section_vma (abfd, sec); | |
2c500098 | 250 | sec_size = bfd_get_section_size (sec); |
be4d1333 MS |
251 | if (sec_vaddr + sec_size > top_of_data_memory) |
252 | top_of_data_memory = sec_vaddr + sec_size; | |
253 | } | |
254 | } | |
d3420b2f | 255 | |
be4d1333 | 256 | /* Now get the top-of-heap by calling sbrk in the inferior. */ |
20fe79c8 MS |
257 | if (lookup_minimal_symbol ("sbrk", NULL, NULL) != NULL) |
258 | { | |
d3420b2f MK |
259 | sbrk = find_function_in_inferior ("sbrk"); |
260 | if (sbrk == NULL) | |
20fe79c8 MS |
261 | return 0; |
262 | } | |
263 | else if (lookup_minimal_symbol ("_sbrk", NULL, NULL) != NULL) | |
264 | { | |
d3420b2f MK |
265 | sbrk = find_function_in_inferior ("_sbrk"); |
266 | if (sbrk == NULL) | |
20fe79c8 MS |
267 | return 0; |
268 | } | |
269 | else | |
be4d1333 | 270 | return 0; |
20fe79c8 | 271 | |
d3420b2f MK |
272 | zero = value_from_longest (builtin_type_int, 0); |
273 | gdb_assert (zero); | |
274 | sbrk = call_function_by_hand (sbrk, 1, &zero); | |
275 | if (sbrk == NULL) | |
be4d1333 MS |
276 | return 0; |
277 | top_of_heap = value_as_long (sbrk); | |
278 | ||
d3420b2f | 279 | /* Return results. */ |
be4d1333 MS |
280 | if (top_of_heap > top_of_data_memory) |
281 | { | |
282 | *bottom = top_of_data_memory; | |
283 | *top = top_of_heap; | |
d3420b2f | 284 | return 1; |
be4d1333 | 285 | } |
d3420b2f MK |
286 | |
287 | /* No additional heap space needs to be saved. */ | |
288 | return 0; | |
be4d1333 MS |
289 | } |
290 | ||
be4d1333 MS |
291 | static void |
292 | make_output_phdrs (bfd *obfd, asection *osec, void *ignored) | |
293 | { | |
294 | int p_flags = 0; | |
295 | int p_type; | |
296 | ||
297 | /* FIXME: these constants may only be applicable for ELF. */ | |
20fe79c8 | 298 | if (strncmp (bfd_section_name (obfd, osec), "load", 4) == 0) |
be4d1333 MS |
299 | p_type = PT_LOAD; |
300 | else | |
301 | p_type = PT_NOTE; | |
302 | ||
303 | p_flags |= PF_R; /* Segment is readable. */ | |
304 | if (!(bfd_get_section_flags (obfd, osec) & SEC_READONLY)) | |
305 | p_flags |= PF_W; /* Segment is writable. */ | |
306 | if (bfd_get_section_flags (obfd, osec) & SEC_CODE) | |
307 | p_flags |= PF_X; /* Segment is executable. */ | |
308 | ||
d3420b2f | 309 | bfd_record_phdr (obfd, p_type, 1, p_flags, 0, 0, 0, 0, 1, &osec); |
be4d1333 MS |
310 | } |
311 | ||
cbb83bd1 RM |
312 | static int |
313 | gcore_create_callback (CORE_ADDR vaddr, unsigned long size, | |
314 | int read, int write, int exec, void *data) | |
be4d1333 | 315 | { |
cbb83bd1 | 316 | bfd *obfd = data; |
be4d1333 | 317 | asection *osec; |
cbb83bd1 RM |
318 | flagword flags = SEC_ALLOC | SEC_HAS_CONTENTS | SEC_LOAD; |
319 | ||
86fbe6cc EZ |
320 | /* If the memory segment has no permissions set, ignore it, otherwise |
321 | when we later try to access it for read/write, we'll get an error | |
322 | or jam the kernel. */ | |
323 | if (read == 0 && write == 0 && exec == 0) | |
324 | { | |
325 | if (info_verbose) | |
326 | { | |
327 | fprintf_filtered (gdb_stdout, "Ignore segment, %s bytes at 0x%s\n", | |
328 | paddr_d (size), paddr_nz (vaddr)); | |
329 | } | |
330 | ||
331 | return 0; | |
332 | } | |
333 | ||
cbb83bd1 RM |
334 | if (write == 0) |
335 | { | |
336 | /* See if this region of memory lies inside a known file on disk. | |
337 | If so, we can avoid copying its contents by clearing SEC_LOAD. */ | |
338 | struct objfile *objfile; | |
339 | struct obj_section *objsec; | |
340 | ||
341 | ALL_OBJSECTIONS (objfile, objsec) | |
342 | { | |
343 | bfd *abfd = objfile->obfd; | |
344 | asection *asec = objsec->the_bfd_section; | |
345 | bfd_vma align = (bfd_vma) 1 << bfd_get_section_alignment (abfd, | |
346 | asec); | |
f1f6aadf PA |
347 | bfd_vma start = obj_section_addr (objsec) & -align; |
348 | bfd_vma end = (obj_section_endaddr (objsec) + align - 1) & -align; | |
cbb83bd1 RM |
349 | /* Match if either the entire memory region lies inside the |
350 | section (i.e. a mapping covering some pages of a large | |
351 | segment) or the entire section lies inside the memory region | |
352 | (i.e. a mapping covering multiple small sections). | |
353 | ||
354 | This BFD was synthesized from reading target memory, | |
355 | we don't want to omit that. */ | |
356 | if (((vaddr >= start && vaddr + size <= end) | |
357 | || (start >= vaddr && end <= vaddr + size)) | |
358 | && !(bfd_get_file_flags (abfd) & BFD_IN_MEMORY)) | |
359 | { | |
360 | flags &= ~SEC_LOAD; | |
52b57208 | 361 | flags |= SEC_NEVER_LOAD; |
cbb83bd1 RM |
362 | goto keep; /* break out of two nested for loops */ |
363 | } | |
364 | } | |
365 | ||
366 | keep: | |
367 | flags |= SEC_READONLY; | |
368 | } | |
369 | ||
370 | if (exec) | |
371 | flags |= SEC_CODE; | |
372 | else | |
373 | flags |= SEC_DATA; | |
be4d1333 | 374 | |
52b57208 | 375 | osec = bfd_make_section_anyway_with_flags (obfd, "load", flags); |
d3420b2f | 376 | if (osec == NULL) |
be4d1333 | 377 | { |
8a3fe4f8 | 378 | warning (_("Couldn't make gcore segment: %s"), |
be4d1333 | 379 | bfd_errmsg (bfd_get_error ())); |
cbb83bd1 | 380 | return 1; |
be4d1333 MS |
381 | } |
382 | ||
383 | if (info_verbose) | |
384 | { | |
86fbe6cc EZ |
385 | fprintf_filtered (gdb_stdout, "Save segment, %s bytes at 0x%s\n", |
386 | paddr_d (size), paddr_nz (vaddr)); | |
be4d1333 MS |
387 | } |
388 | ||
389 | bfd_set_section_size (obfd, osec, size); | |
cbb83bd1 | 390 | bfd_set_section_vma (obfd, osec, vaddr); |
d3420b2f | 391 | bfd_section_lma (obfd, osec) = 0; /* ??? bfd_set_section_lma? */ |
cbb83bd1 | 392 | return 0; |
be4d1333 MS |
393 | } |
394 | ||
395 | static int | |
d3420b2f MK |
396 | objfile_find_memory_regions (int (*func) (CORE_ADDR, unsigned long, |
397 | int, int, int, void *), | |
be4d1333 MS |
398 | void *obfd) |
399 | { | |
d3420b2f | 400 | /* Use objfile data to create memory sections. */ |
be4d1333 MS |
401 | struct objfile *objfile; |
402 | struct obj_section *objsec; | |
403 | bfd_vma temp_bottom, temp_top; | |
404 | ||
d3420b2f | 405 | /* Call callback function for each objfile section. */ |
be4d1333 MS |
406 | ALL_OBJSECTIONS (objfile, objsec) |
407 | { | |
408 | bfd *ibfd = objfile->obfd; | |
409 | asection *isec = objsec->the_bfd_section; | |
410 | flagword flags = bfd_get_section_flags (ibfd, isec); | |
411 | int ret; | |
412 | ||
413 | if ((flags & SEC_ALLOC) || (flags & SEC_LOAD)) | |
414 | { | |
415 | int size = bfd_section_size (ibfd, isec); | |
416 | int ret; | |
417 | ||
f1f6aadf | 418 | ret = (*func) (obj_section_addr (objsec), bfd_section_size (ibfd, isec), |
d3420b2f MK |
419 | 1, /* All sections will be readable. */ |
420 | (flags & SEC_READONLY) == 0, /* Writable. */ | |
421 | (flags & SEC_CODE) != 0, /* Executable. */ | |
422 | obfd); | |
423 | if (ret != 0) | |
be4d1333 MS |
424 | return ret; |
425 | } | |
426 | } | |
427 | ||
d3420b2f | 428 | /* Make a stack segment. */ |
be4d1333 | 429 | if (derive_stack_segment (&temp_bottom, &temp_top)) |
cbb83bd1 | 430 | (*func) (temp_bottom, temp_top - temp_bottom, |
d3420b2f MK |
431 | 1, /* Stack section will be readable. */ |
432 | 1, /* Stack section will be writable. */ | |
433 | 0, /* Stack section will not be executable. */ | |
be4d1333 MS |
434 | obfd); |
435 | ||
436 | /* Make a heap segment. */ | |
437 | if (derive_heap_segment (exec_bfd, &temp_bottom, &temp_top)) | |
d3420b2f MK |
438 | (*func) (temp_bottom, temp_top - temp_bottom, |
439 | 1, /* Heap section will be readable. */ | |
440 | 1, /* Heap section will be writable. */ | |
441 | 0, /* Heap section will not be executable. */ | |
be4d1333 | 442 | obfd); |
d3420b2f | 443 | |
be4d1333 MS |
444 | return 0; |
445 | } | |
446 | ||
447 | static void | |
448 | gcore_copy_callback (bfd *obfd, asection *osec, void *ignored) | |
449 | { | |
804e0f53 DJ |
450 | bfd_size_type size, total_size = bfd_section_size (obfd, osec); |
451 | file_ptr offset = 0; | |
be4d1333 MS |
452 | struct cleanup *old_chain = NULL; |
453 | void *memhunk; | |
454 | ||
cbb83bd1 RM |
455 | /* Read-only sections are marked; we don't have to copy their contents. */ |
456 | if ((bfd_get_section_flags (obfd, osec) & SEC_LOAD) == 0) | |
d3420b2f MK |
457 | return; |
458 | ||
459 | /* Only interested in "load" sections. */ | |
20fe79c8 | 460 | if (strncmp ("load", bfd_section_name (obfd, osec), 4) != 0) |
d3420b2f | 461 | return; |
be4d1333 | 462 | |
804e0f53 | 463 | size = min (total_size, MAX_COPY_BYTES); |
d3420b2f MK |
464 | memhunk = xmalloc (size); |
465 | /* ??? This is crap since xmalloc should never return NULL. */ | |
466 | if (memhunk == NULL) | |
8a3fe4f8 | 467 | error (_("Not enough memory to create corefile.")); |
be4d1333 MS |
468 | old_chain = make_cleanup (xfree, memhunk); |
469 | ||
804e0f53 DJ |
470 | while (total_size > 0) |
471 | { | |
472 | if (size > total_size) | |
473 | size = total_size; | |
474 | ||
475 | if (target_read_memory (bfd_section_vma (obfd, osec) + offset, | |
476 | memhunk, size) != 0) | |
477 | { | |
478 | warning (_("Memory read failed for corefile section, %s bytes at 0x%s."), | |
479 | paddr_d (size), paddr (bfd_section_vma (obfd, osec))); | |
480 | break; | |
481 | } | |
482 | if (!bfd_set_section_contents (obfd, osec, memhunk, offset, size)) | |
483 | { | |
484 | warning (_("Failed to write corefile contents (%s)."), | |
485 | bfd_errmsg (bfd_get_error ())); | |
486 | break; | |
487 | } | |
488 | ||
489 | total_size -= size; | |
490 | offset += size; | |
491 | } | |
be4d1333 | 492 | |
d3420b2f | 493 | do_cleanups (old_chain); /* Frees MEMHUNK. */ |
be4d1333 MS |
494 | } |
495 | ||
496 | static int | |
497 | gcore_memory_sections (bfd *obfd) | |
498 | { | |
499 | if (target_find_memory_regions (gcore_create_callback, obfd) != 0) | |
d3420b2f | 500 | return 0; /* FIXME: error return/msg? */ |
be4d1333 | 501 | |
d3420b2f | 502 | /* Record phdrs for section-to-segment mapping. */ |
be4d1333 MS |
503 | bfd_map_over_sections (obfd, make_output_phdrs, NULL); |
504 | ||
d3420b2f | 505 | /* Copy memory region contents. */ |
be4d1333 MS |
506 | bfd_map_over_sections (obfd, gcore_copy_callback, NULL); |
507 | ||
d3420b2f | 508 | return 1; |
be4d1333 MS |
509 | } |
510 | ||
511 | void | |
512 | _initialize_gcore (void) | |
513 | { | |
1bedd215 | 514 | add_com ("generate-core-file", class_files, gcore_command, _("\ |
d3420b2f | 515 | Save a core file with the current state of the debugged process.\n\ |
1bedd215 | 516 | Argument is optional filename. Default filename is 'core.<process_id>'.")); |
be4d1333 MS |
517 | |
518 | add_com_alias ("gcore", "generate-core-file", class_files, 1); | |
519 | exec_set_find_memory_regions (objfile_find_memory_regions); | |
520 | } |