Commit | Line | Data |
---|---|---|
be4d1333 | 1 | /* Generate a core file for the inferior process. |
1bac305b | 2 | |
0fb0cc75 | 3 | Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
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 | ||
a78c2d62 | 38 | static const char *default_gcore_target (void); |
d3420b2f MK |
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 | 127 | |
a78c2d62 | 128 | const struct bfd_arch_info *bfdarch = gdbarch_bfd_arch_info (target_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 | { | |
a78c2d62 | 142 | const struct bfd_arch_info *bfdarch = gdbarch_bfd_arch_info (target_gdbarch); |
be4d1333 MS |
143 | |
144 | if (bfdarch != NULL) | |
145 | return bfdarch->arch; | |
be4d1333 | 146 | if (exec_bfd == NULL) |
8a3fe4f8 | 147 | error (_("Can't find bfd architecture for corefile (need execfile).")); |
be4d1333 MS |
148 | |
149 | return bfd_get_arch (exec_bfd); | |
150 | } | |
151 | ||
a78c2d62 | 152 | static const char * |
be4d1333 MS |
153 | default_gcore_target (void) |
154 | { | |
a78c2d62 UW |
155 | /* The gdbarch may define a target to use for core files. */ |
156 | if (gdbarch_gcore_bfd_target_p (target_gdbarch)) | |
157 | return gdbarch_gcore_bfd_target (target_gdbarch); | |
158 | ||
159 | /* Otherwise, try to fall back to the exec_bfd target. This will probably | |
160 | not work for non-ELF targets. */ | |
be4d1333 | 161 | if (exec_bfd == NULL) |
6dbdc4a3 MS |
162 | return NULL; |
163 | else | |
164 | return bfd_get_target (exec_bfd); | |
be4d1333 MS |
165 | } |
166 | ||
d3420b2f MK |
167 | /* Derive a reasonable stack segment by unwinding the target stack, |
168 | and store its limits in *BOTTOM and *TOP. Return non-zero if | |
169 | successful. */ | |
be4d1333 | 170 | |
cbb83bd1 | 171 | static int |
69db8bae | 172 | derive_stack_segment (bfd_vma *bottom, bfd_vma *top) |
be4d1333 | 173 | { |
be4d1333 MS |
174 | struct frame_info *fi, *tmp_fi; |
175 | ||
d3420b2f MK |
176 | gdb_assert (bottom); |
177 | gdb_assert (top); | |
be4d1333 | 178 | |
d3420b2f | 179 | /* Can't succeed without stack and registers. */ |
be4d1333 | 180 | if (!target_has_stack || !target_has_registers) |
d3420b2f | 181 | return 0; |
be4d1333 | 182 | |
d3420b2f MK |
183 | /* Can't succeed without current frame. */ |
184 | fi = get_current_frame (); | |
185 | if (fi == NULL) | |
186 | return 0; | |
be4d1333 | 187 | |
d3420b2f | 188 | /* Save frame pointer of TOS frame. */ |
8d357cca | 189 | *top = get_frame_base (fi); |
d3420b2f | 190 | /* If current stack pointer is more "inner", use that instead. */ |
40a6adc1 | 191 | if (gdbarch_inner_than (get_frame_arch (fi), get_frame_sp (fi), *top)) |
fb4443d8 | 192 | *top = get_frame_sp (fi); |
be4d1333 | 193 | |
d3420b2f | 194 | /* Find prev-most frame. */ |
be4d1333 MS |
195 | while ((tmp_fi = get_prev_frame (fi)) != NULL) |
196 | fi = tmp_fi; | |
197 | ||
d3420b2f | 198 | /* Save frame pointer of prev-most frame. */ |
8d357cca | 199 | *bottom = get_frame_base (fi); |
be4d1333 | 200 | |
d3420b2f MK |
201 | /* Now canonicalize their order, so that BOTTOM is a lower address |
202 | (as opposed to a lower stack frame). */ | |
be4d1333 MS |
203 | if (*bottom > *top) |
204 | { | |
d3420b2f MK |
205 | bfd_vma tmp_vma; |
206 | ||
be4d1333 MS |
207 | tmp_vma = *top; |
208 | *top = *bottom; | |
209 | *bottom = tmp_vma; | |
210 | } | |
211 | ||
d3420b2f | 212 | return 1; |
be4d1333 MS |
213 | } |
214 | ||
d3420b2f MK |
215 | /* Derive a reasonable heap segment for ABFD by looking at sbrk and |
216 | the static data sections. Store its limits in *BOTTOM and *TOP. | |
217 | Return non-zero if successful. */ | |
be4d1333 | 218 | |
cbb83bd1 | 219 | static int |
69db8bae | 220 | derive_heap_segment (bfd *abfd, bfd_vma *bottom, bfd_vma *top) |
be4d1333 | 221 | { |
3e3b026f UW |
222 | struct objfile *sbrk_objf; |
223 | struct gdbarch *gdbarch; | |
be4d1333 MS |
224 | bfd_vma top_of_data_memory = 0; |
225 | bfd_vma top_of_heap = 0; | |
226 | bfd_size_type sec_size; | |
227 | struct value *zero, *sbrk; | |
228 | bfd_vma sec_vaddr; | |
229 | asection *sec; | |
230 | ||
d3420b2f MK |
231 | gdb_assert (bottom); |
232 | gdb_assert (top); | |
be4d1333 | 233 | |
d3420b2f MK |
234 | /* This function depends on being able to call a function in the |
235 | inferior. */ | |
be4d1333 | 236 | if (!target_has_execution) |
d3420b2f MK |
237 | return 0; |
238 | ||
239 | /* The following code assumes that the link map is arranged as | |
240 | follows (low to high addresses): | |
be4d1333 | 241 | |
d3420b2f MK |
242 | --------------------------------- |
243 | | text sections | | |
244 | --------------------------------- | |
245 | | data sections (including bss) | | |
246 | --------------------------------- | |
247 | | heap | | |
248 | --------------------------------- */ | |
be4d1333 MS |
249 | |
250 | for (sec = abfd->sections; sec; sec = sec->next) | |
251 | { | |
d3420b2f MK |
252 | if (bfd_get_section_flags (abfd, sec) & SEC_DATA |
253 | || strcmp (".bss", bfd_section_name (abfd, sec)) == 0) | |
be4d1333 MS |
254 | { |
255 | sec_vaddr = bfd_get_section_vma (abfd, sec); | |
2c500098 | 256 | sec_size = bfd_get_section_size (sec); |
be4d1333 MS |
257 | if (sec_vaddr + sec_size > top_of_data_memory) |
258 | top_of_data_memory = sec_vaddr + sec_size; | |
259 | } | |
260 | } | |
d3420b2f | 261 | |
be4d1333 | 262 | /* Now get the top-of-heap by calling sbrk in the inferior. */ |
20fe79c8 MS |
263 | if (lookup_minimal_symbol ("sbrk", NULL, NULL) != NULL) |
264 | { | |
3e3b026f | 265 | sbrk = find_function_in_inferior ("sbrk", &sbrk_objf); |
d3420b2f | 266 | if (sbrk == NULL) |
20fe79c8 MS |
267 | return 0; |
268 | } | |
269 | else if (lookup_minimal_symbol ("_sbrk", NULL, NULL) != NULL) | |
270 | { | |
3e3b026f | 271 | sbrk = find_function_in_inferior ("_sbrk", &sbrk_objf); |
d3420b2f | 272 | if (sbrk == NULL) |
20fe79c8 MS |
273 | return 0; |
274 | } | |
275 | else | |
be4d1333 | 276 | return 0; |
20fe79c8 | 277 | |
3e3b026f UW |
278 | gdbarch = get_objfile_arch (sbrk_objf); |
279 | zero = value_from_longest (builtin_type (gdbarch)->builtin_int, 0); | |
d3420b2f MK |
280 | gdb_assert (zero); |
281 | sbrk = call_function_by_hand (sbrk, 1, &zero); | |
282 | if (sbrk == NULL) | |
be4d1333 MS |
283 | return 0; |
284 | top_of_heap = value_as_long (sbrk); | |
285 | ||
d3420b2f | 286 | /* Return results. */ |
be4d1333 MS |
287 | if (top_of_heap > top_of_data_memory) |
288 | { | |
289 | *bottom = top_of_data_memory; | |
290 | *top = top_of_heap; | |
d3420b2f | 291 | return 1; |
be4d1333 | 292 | } |
d3420b2f MK |
293 | |
294 | /* No additional heap space needs to be saved. */ | |
295 | return 0; | |
be4d1333 MS |
296 | } |
297 | ||
be4d1333 MS |
298 | static void |
299 | make_output_phdrs (bfd *obfd, asection *osec, void *ignored) | |
300 | { | |
301 | int p_flags = 0; | |
302 | int p_type; | |
303 | ||
304 | /* FIXME: these constants may only be applicable for ELF. */ | |
20fe79c8 | 305 | if (strncmp (bfd_section_name (obfd, osec), "load", 4) == 0) |
be4d1333 MS |
306 | p_type = PT_LOAD; |
307 | else | |
308 | p_type = PT_NOTE; | |
309 | ||
310 | p_flags |= PF_R; /* Segment is readable. */ | |
311 | if (!(bfd_get_section_flags (obfd, osec) & SEC_READONLY)) | |
312 | p_flags |= PF_W; /* Segment is writable. */ | |
313 | if (bfd_get_section_flags (obfd, osec) & SEC_CODE) | |
314 | p_flags |= PF_X; /* Segment is executable. */ | |
315 | ||
d3420b2f | 316 | bfd_record_phdr (obfd, p_type, 1, p_flags, 0, 0, 0, 0, 1, &osec); |
be4d1333 MS |
317 | } |
318 | ||
cbb83bd1 RM |
319 | static int |
320 | gcore_create_callback (CORE_ADDR vaddr, unsigned long size, | |
321 | int read, int write, int exec, void *data) | |
be4d1333 | 322 | { |
cbb83bd1 | 323 | bfd *obfd = data; |
be4d1333 | 324 | asection *osec; |
cbb83bd1 RM |
325 | flagword flags = SEC_ALLOC | SEC_HAS_CONTENTS | SEC_LOAD; |
326 | ||
86fbe6cc EZ |
327 | /* If the memory segment has no permissions set, ignore it, otherwise |
328 | when we later try to access it for read/write, we'll get an error | |
329 | or jam the kernel. */ | |
330 | if (read == 0 && write == 0 && exec == 0) | |
331 | { | |
332 | if (info_verbose) | |
333 | { | |
5af949e3 UW |
334 | fprintf_filtered (gdb_stdout, "Ignore segment, %s bytes at %s\n", |
335 | plongest (size), paddress (target_gdbarch, vaddr)); | |
86fbe6cc EZ |
336 | } |
337 | ||
338 | return 0; | |
339 | } | |
340 | ||
cbb83bd1 RM |
341 | if (write == 0) |
342 | { | |
343 | /* See if this region of memory lies inside a known file on disk. | |
344 | If so, we can avoid copying its contents by clearing SEC_LOAD. */ | |
345 | struct objfile *objfile; | |
346 | struct obj_section *objsec; | |
347 | ||
348 | ALL_OBJSECTIONS (objfile, objsec) | |
349 | { | |
350 | bfd *abfd = objfile->obfd; | |
351 | asection *asec = objsec->the_bfd_section; | |
352 | bfd_vma align = (bfd_vma) 1 << bfd_get_section_alignment (abfd, | |
353 | asec); | |
f1f6aadf PA |
354 | bfd_vma start = obj_section_addr (objsec) & -align; |
355 | bfd_vma end = (obj_section_endaddr (objsec) + align - 1) & -align; | |
cbb83bd1 RM |
356 | /* Match if either the entire memory region lies inside the |
357 | section (i.e. a mapping covering some pages of a large | |
358 | segment) or the entire section lies inside the memory region | |
359 | (i.e. a mapping covering multiple small sections). | |
360 | ||
361 | This BFD was synthesized from reading target memory, | |
362 | we don't want to omit that. */ | |
363 | if (((vaddr >= start && vaddr + size <= end) | |
364 | || (start >= vaddr && end <= vaddr + size)) | |
365 | && !(bfd_get_file_flags (abfd) & BFD_IN_MEMORY)) | |
366 | { | |
367 | flags &= ~SEC_LOAD; | |
52b57208 | 368 | flags |= SEC_NEVER_LOAD; |
cbb83bd1 RM |
369 | goto keep; /* break out of two nested for loops */ |
370 | } | |
371 | } | |
372 | ||
373 | keep: | |
374 | flags |= SEC_READONLY; | |
375 | } | |
376 | ||
377 | if (exec) | |
378 | flags |= SEC_CODE; | |
379 | else | |
380 | flags |= SEC_DATA; | |
be4d1333 | 381 | |
52b57208 | 382 | osec = bfd_make_section_anyway_with_flags (obfd, "load", flags); |
d3420b2f | 383 | if (osec == NULL) |
be4d1333 | 384 | { |
8a3fe4f8 | 385 | warning (_("Couldn't make gcore segment: %s"), |
be4d1333 | 386 | bfd_errmsg (bfd_get_error ())); |
cbb83bd1 | 387 | return 1; |
be4d1333 MS |
388 | } |
389 | ||
390 | if (info_verbose) | |
391 | { | |
5af949e3 UW |
392 | fprintf_filtered (gdb_stdout, "Save segment, %s bytes at %s\n", |
393 | plongest (size), paddress (target_gdbarch, vaddr)); | |
be4d1333 MS |
394 | } |
395 | ||
396 | bfd_set_section_size (obfd, osec, size); | |
cbb83bd1 | 397 | bfd_set_section_vma (obfd, osec, vaddr); |
d3420b2f | 398 | bfd_section_lma (obfd, osec) = 0; /* ??? bfd_set_section_lma? */ |
cbb83bd1 | 399 | return 0; |
be4d1333 MS |
400 | } |
401 | ||
402 | static int | |
d3420b2f MK |
403 | objfile_find_memory_regions (int (*func) (CORE_ADDR, unsigned long, |
404 | int, int, int, void *), | |
be4d1333 MS |
405 | void *obfd) |
406 | { | |
d3420b2f | 407 | /* Use objfile data to create memory sections. */ |
be4d1333 MS |
408 | struct objfile *objfile; |
409 | struct obj_section *objsec; | |
410 | bfd_vma temp_bottom, temp_top; | |
411 | ||
d3420b2f | 412 | /* Call callback function for each objfile section. */ |
be4d1333 MS |
413 | ALL_OBJSECTIONS (objfile, objsec) |
414 | { | |
415 | bfd *ibfd = objfile->obfd; | |
416 | asection *isec = objsec->the_bfd_section; | |
417 | flagword flags = bfd_get_section_flags (ibfd, isec); | |
418 | int ret; | |
419 | ||
420 | if ((flags & SEC_ALLOC) || (flags & SEC_LOAD)) | |
421 | { | |
422 | int size = bfd_section_size (ibfd, isec); | |
423 | int ret; | |
424 | ||
f1f6aadf | 425 | ret = (*func) (obj_section_addr (objsec), bfd_section_size (ibfd, isec), |
d3420b2f MK |
426 | 1, /* All sections will be readable. */ |
427 | (flags & SEC_READONLY) == 0, /* Writable. */ | |
428 | (flags & SEC_CODE) != 0, /* Executable. */ | |
429 | obfd); | |
430 | if (ret != 0) | |
be4d1333 MS |
431 | return ret; |
432 | } | |
433 | } | |
434 | ||
d3420b2f | 435 | /* Make a stack segment. */ |
be4d1333 | 436 | if (derive_stack_segment (&temp_bottom, &temp_top)) |
cbb83bd1 | 437 | (*func) (temp_bottom, temp_top - temp_bottom, |
d3420b2f MK |
438 | 1, /* Stack section will be readable. */ |
439 | 1, /* Stack section will be writable. */ | |
440 | 0, /* Stack section will not be executable. */ | |
be4d1333 MS |
441 | obfd); |
442 | ||
443 | /* Make a heap segment. */ | |
444 | if (derive_heap_segment (exec_bfd, &temp_bottom, &temp_top)) | |
d3420b2f MK |
445 | (*func) (temp_bottom, temp_top - temp_bottom, |
446 | 1, /* Heap section will be readable. */ | |
447 | 1, /* Heap section will be writable. */ | |
448 | 0, /* Heap section will not be executable. */ | |
be4d1333 | 449 | obfd); |
d3420b2f | 450 | |
be4d1333 MS |
451 | return 0; |
452 | } | |
453 | ||
454 | static void | |
455 | gcore_copy_callback (bfd *obfd, asection *osec, void *ignored) | |
456 | { | |
804e0f53 DJ |
457 | bfd_size_type size, total_size = bfd_section_size (obfd, osec); |
458 | file_ptr offset = 0; | |
be4d1333 MS |
459 | struct cleanup *old_chain = NULL; |
460 | void *memhunk; | |
461 | ||
cbb83bd1 RM |
462 | /* Read-only sections are marked; we don't have to copy their contents. */ |
463 | if ((bfd_get_section_flags (obfd, osec) & SEC_LOAD) == 0) | |
d3420b2f MK |
464 | return; |
465 | ||
466 | /* Only interested in "load" sections. */ | |
20fe79c8 | 467 | if (strncmp ("load", bfd_section_name (obfd, osec), 4) != 0) |
d3420b2f | 468 | return; |
be4d1333 | 469 | |
804e0f53 | 470 | size = min (total_size, MAX_COPY_BYTES); |
d3420b2f MK |
471 | memhunk = xmalloc (size); |
472 | /* ??? This is crap since xmalloc should never return NULL. */ | |
473 | if (memhunk == NULL) | |
8a3fe4f8 | 474 | error (_("Not enough memory to create corefile.")); |
be4d1333 MS |
475 | old_chain = make_cleanup (xfree, memhunk); |
476 | ||
804e0f53 DJ |
477 | while (total_size > 0) |
478 | { | |
479 | if (size > total_size) | |
480 | size = total_size; | |
481 | ||
482 | if (target_read_memory (bfd_section_vma (obfd, osec) + offset, | |
483 | memhunk, size) != 0) | |
484 | { | |
5af949e3 UW |
485 | warning (_("Memory read failed for corefile section, %s bytes at %s."), |
486 | plongest (size), | |
487 | paddress (target_gdbarch, bfd_section_vma (obfd, osec))); | |
804e0f53 DJ |
488 | break; |
489 | } | |
490 | if (!bfd_set_section_contents (obfd, osec, memhunk, offset, size)) | |
491 | { | |
492 | warning (_("Failed to write corefile contents (%s)."), | |
493 | bfd_errmsg (bfd_get_error ())); | |
494 | break; | |
495 | } | |
496 | ||
497 | total_size -= size; | |
498 | offset += size; | |
499 | } | |
be4d1333 | 500 | |
d3420b2f | 501 | do_cleanups (old_chain); /* Frees MEMHUNK. */ |
be4d1333 MS |
502 | } |
503 | ||
504 | static int | |
505 | gcore_memory_sections (bfd *obfd) | |
506 | { | |
507 | if (target_find_memory_regions (gcore_create_callback, obfd) != 0) | |
d3420b2f | 508 | return 0; /* FIXME: error return/msg? */ |
be4d1333 | 509 | |
d3420b2f | 510 | /* Record phdrs for section-to-segment mapping. */ |
be4d1333 MS |
511 | bfd_map_over_sections (obfd, make_output_phdrs, NULL); |
512 | ||
d3420b2f | 513 | /* Copy memory region contents. */ |
be4d1333 MS |
514 | bfd_map_over_sections (obfd, gcore_copy_callback, NULL); |
515 | ||
d3420b2f | 516 | return 1; |
be4d1333 MS |
517 | } |
518 | ||
2c0b251b PA |
519 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
520 | extern initialize_file_ftype _initialize_gcore; | |
521 | ||
be4d1333 MS |
522 | void |
523 | _initialize_gcore (void) | |
524 | { | |
1bedd215 | 525 | add_com ("generate-core-file", class_files, gcore_command, _("\ |
d3420b2f | 526 | Save a core file with the current state of the debugged process.\n\ |
1bedd215 | 527 | Argument is optional filename. Default filename is 'core.<process_id>'.")); |
be4d1333 MS |
528 | |
529 | add_com_alias ("gcore", "generate-core-file", class_files, 1); | |
530 | exec_set_find_memory_regions (objfile_find_memory_regions); | |
531 | } |