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4aa995e1 PA |
1 | /* Target-dependent code for GNU/Linux, architecture independent. |
2 | ||
28e7fd62 | 3 | Copyright (C) 2009-2013 Free Software Foundation, Inc. |
4aa995e1 PA |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include "defs.h" | |
21 | #include "gdbtypes.h" | |
2c0b251b | 22 | #include "linux-tdep.h" |
6c95b8df PA |
23 | #include "auxv.h" |
24 | #include "target.h" | |
6432734d UW |
25 | #include "gdbthread.h" |
26 | #include "gdbcore.h" | |
27 | #include "regcache.h" | |
28 | #include "regset.h" | |
6c95b8df | 29 | #include "elf/common.h" |
6432734d | 30 | #include "elf-bfd.h" /* for elfcore_write_* */ |
a5ee0f0c | 31 | #include "inferior.h" |
3030c96e | 32 | #include "cli/cli-utils.h" |
451b7c33 TT |
33 | #include "arch-utils.h" |
34 | #include "gdb_obstack.h" | |
b3ac9c77 | 35 | #include "cli/cli-utils.h" |
3030c96e UW |
36 | |
37 | #include <ctype.h> | |
4aa995e1 | 38 | |
06253dd3 JK |
39 | static struct gdbarch_data *linux_gdbarch_data_handle; |
40 | ||
41 | struct linux_gdbarch_data | |
42 | { | |
43 | struct type *siginfo_type; | |
44 | }; | |
45 | ||
46 | static void * | |
47 | init_linux_gdbarch_data (struct gdbarch *gdbarch) | |
48 | { | |
49 | return GDBARCH_OBSTACK_ZALLOC (gdbarch, struct linux_gdbarch_data); | |
50 | } | |
51 | ||
52 | static struct linux_gdbarch_data * | |
53 | get_linux_gdbarch_data (struct gdbarch *gdbarch) | |
54 | { | |
55 | return gdbarch_data (gdbarch, linux_gdbarch_data_handle); | |
56 | } | |
57 | ||
4aa995e1 PA |
58 | /* This function is suitable for architectures that don't |
59 | extend/override the standard siginfo structure. */ | |
60 | ||
61 | struct type * | |
62 | linux_get_siginfo_type (struct gdbarch *gdbarch) | |
63 | { | |
06253dd3 | 64 | struct linux_gdbarch_data *linux_gdbarch_data; |
4aa995e1 PA |
65 | struct type *int_type, *uint_type, *long_type, *void_ptr_type; |
66 | struct type *uid_type, *pid_type; | |
67 | struct type *sigval_type, *clock_type; | |
68 | struct type *siginfo_type, *sifields_type; | |
69 | struct type *type; | |
70 | ||
06253dd3 JK |
71 | linux_gdbarch_data = get_linux_gdbarch_data (gdbarch); |
72 | if (linux_gdbarch_data->siginfo_type != NULL) | |
73 | return linux_gdbarch_data->siginfo_type; | |
74 | ||
e9bb382b UW |
75 | int_type = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), |
76 | 0, "int"); | |
77 | uint_type = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), | |
78 | 1, "unsigned int"); | |
79 | long_type = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch), | |
80 | 0, "long"); | |
4aa995e1 PA |
81 | void_ptr_type = lookup_pointer_type (builtin_type (gdbarch)->builtin_void); |
82 | ||
83 | /* sival_t */ | |
e9bb382b | 84 | sigval_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION); |
4aa995e1 PA |
85 | TYPE_NAME (sigval_type) = xstrdup ("sigval_t"); |
86 | append_composite_type_field (sigval_type, "sival_int", int_type); | |
87 | append_composite_type_field (sigval_type, "sival_ptr", void_ptr_type); | |
88 | ||
89 | /* __pid_t */ | |
e3aa49af MS |
90 | pid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF, |
91 | TYPE_LENGTH (int_type), "__pid_t"); | |
4aa995e1 | 92 | TYPE_TARGET_TYPE (pid_type) = int_type; |
e9bb382b | 93 | TYPE_TARGET_STUB (pid_type) = 1; |
4aa995e1 PA |
94 | |
95 | /* __uid_t */ | |
e3aa49af MS |
96 | uid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF, |
97 | TYPE_LENGTH (uint_type), "__uid_t"); | |
4aa995e1 | 98 | TYPE_TARGET_TYPE (uid_type) = uint_type; |
e9bb382b | 99 | TYPE_TARGET_STUB (uid_type) = 1; |
4aa995e1 PA |
100 | |
101 | /* __clock_t */ | |
e3aa49af MS |
102 | clock_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF, |
103 | TYPE_LENGTH (long_type), "__clock_t"); | |
4aa995e1 | 104 | TYPE_TARGET_TYPE (clock_type) = long_type; |
e9bb382b | 105 | TYPE_TARGET_STUB (clock_type) = 1; |
4aa995e1 PA |
106 | |
107 | /* _sifields */ | |
e9bb382b | 108 | sifields_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION); |
4aa995e1 PA |
109 | |
110 | { | |
111 | const int si_max_size = 128; | |
112 | int si_pad_size; | |
113 | int size_of_int = gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT; | |
114 | ||
115 | /* _pad */ | |
116 | if (gdbarch_ptr_bit (gdbarch) == 64) | |
117 | si_pad_size = (si_max_size / size_of_int) - 4; | |
118 | else | |
119 | si_pad_size = (si_max_size / size_of_int) - 3; | |
120 | append_composite_type_field (sifields_type, "_pad", | |
121 | init_vector_type (int_type, si_pad_size)); | |
122 | } | |
123 | ||
124 | /* _kill */ | |
e9bb382b | 125 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
4aa995e1 PA |
126 | append_composite_type_field (type, "si_pid", pid_type); |
127 | append_composite_type_field (type, "si_uid", uid_type); | |
128 | append_composite_type_field (sifields_type, "_kill", type); | |
129 | ||
130 | /* _timer */ | |
e9bb382b | 131 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
4aa995e1 PA |
132 | append_composite_type_field (type, "si_tid", int_type); |
133 | append_composite_type_field (type, "si_overrun", int_type); | |
134 | append_composite_type_field (type, "si_sigval", sigval_type); | |
135 | append_composite_type_field (sifields_type, "_timer", type); | |
136 | ||
137 | /* _rt */ | |
e9bb382b | 138 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
4aa995e1 PA |
139 | append_composite_type_field (type, "si_pid", pid_type); |
140 | append_composite_type_field (type, "si_uid", uid_type); | |
141 | append_composite_type_field (type, "si_sigval", sigval_type); | |
142 | append_composite_type_field (sifields_type, "_rt", type); | |
143 | ||
144 | /* _sigchld */ | |
e9bb382b | 145 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
4aa995e1 PA |
146 | append_composite_type_field (type, "si_pid", pid_type); |
147 | append_composite_type_field (type, "si_uid", uid_type); | |
148 | append_composite_type_field (type, "si_status", int_type); | |
149 | append_composite_type_field (type, "si_utime", clock_type); | |
150 | append_composite_type_field (type, "si_stime", clock_type); | |
151 | append_composite_type_field (sifields_type, "_sigchld", type); | |
152 | ||
153 | /* _sigfault */ | |
e9bb382b | 154 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
4aa995e1 PA |
155 | append_composite_type_field (type, "si_addr", void_ptr_type); |
156 | append_composite_type_field (sifields_type, "_sigfault", type); | |
157 | ||
158 | /* _sigpoll */ | |
e9bb382b | 159 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
4aa995e1 PA |
160 | append_composite_type_field (type, "si_band", long_type); |
161 | append_composite_type_field (type, "si_fd", int_type); | |
162 | append_composite_type_field (sifields_type, "_sigpoll", type); | |
163 | ||
164 | /* struct siginfo */ | |
e9bb382b | 165 | siginfo_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
4aa995e1 PA |
166 | TYPE_NAME (siginfo_type) = xstrdup ("siginfo"); |
167 | append_composite_type_field (siginfo_type, "si_signo", int_type); | |
168 | append_composite_type_field (siginfo_type, "si_errno", int_type); | |
169 | append_composite_type_field (siginfo_type, "si_code", int_type); | |
170 | append_composite_type_field_aligned (siginfo_type, | |
171 | "_sifields", sifields_type, | |
172 | TYPE_LENGTH (long_type)); | |
173 | ||
06253dd3 JK |
174 | linux_gdbarch_data->siginfo_type = siginfo_type; |
175 | ||
4aa995e1 PA |
176 | return siginfo_type; |
177 | } | |
6b3ae818 | 178 | |
33fbcbee PA |
179 | static int |
180 | linux_has_shared_address_space (struct gdbarch *gdbarch) | |
6c95b8df PA |
181 | { |
182 | /* Determine whether we are running on uClinux or normal Linux | |
183 | kernel. */ | |
184 | CORE_ADDR dummy; | |
185 | int target_is_uclinux; | |
186 | ||
187 | target_is_uclinux | |
188 | = (target_auxv_search (¤t_target, AT_NULL, &dummy) > 0 | |
189 | && target_auxv_search (¤t_target, AT_PAGESZ, &dummy) == 0); | |
190 | ||
191 | return target_is_uclinux; | |
192 | } | |
a5ee0f0c PA |
193 | |
194 | /* This is how we want PTIDs from core files to be printed. */ | |
195 | ||
196 | static char * | |
197 | linux_core_pid_to_str (struct gdbarch *gdbarch, ptid_t ptid) | |
198 | { | |
199 | static char buf[80]; | |
200 | ||
201 | if (ptid_get_lwp (ptid) != 0) | |
202 | { | |
203 | snprintf (buf, sizeof (buf), "LWP %ld", ptid_get_lwp (ptid)); | |
204 | return buf; | |
205 | } | |
206 | ||
207 | return normal_pid_to_str (ptid); | |
208 | } | |
209 | ||
3030c96e UW |
210 | /* Service function for corefiles and info proc. */ |
211 | ||
212 | static void | |
213 | read_mapping (const char *line, | |
214 | ULONGEST *addr, ULONGEST *endaddr, | |
215 | const char **permissions, size_t *permissions_len, | |
216 | ULONGEST *offset, | |
217 | const char **device, size_t *device_len, | |
218 | ULONGEST *inode, | |
219 | const char **filename) | |
220 | { | |
221 | const char *p = line; | |
222 | ||
223 | *addr = strtoulst (p, &p, 16); | |
224 | if (*p == '-') | |
225 | p++; | |
226 | *endaddr = strtoulst (p, &p, 16); | |
227 | ||
228 | while (*p && isspace (*p)) | |
229 | p++; | |
230 | *permissions = p; | |
231 | while (*p && !isspace (*p)) | |
232 | p++; | |
233 | *permissions_len = p - *permissions; | |
234 | ||
235 | *offset = strtoulst (p, &p, 16); | |
236 | ||
237 | while (*p && isspace (*p)) | |
238 | p++; | |
239 | *device = p; | |
240 | while (*p && !isspace (*p)) | |
241 | p++; | |
242 | *device_len = p - *device; | |
243 | ||
244 | *inode = strtoulst (p, &p, 10); | |
245 | ||
246 | while (*p && isspace (*p)) | |
247 | p++; | |
248 | *filename = p; | |
249 | } | |
250 | ||
251 | /* Implement the "info proc" command. */ | |
252 | ||
253 | static void | |
254 | linux_info_proc (struct gdbarch *gdbarch, char *args, | |
255 | enum info_proc_what what) | |
256 | { | |
257 | /* A long is used for pid instead of an int to avoid a loss of precision | |
258 | compiler warning from the output of strtoul. */ | |
259 | long pid; | |
260 | int cmdline_f = (what == IP_MINIMAL || what == IP_CMDLINE || what == IP_ALL); | |
261 | int cwd_f = (what == IP_MINIMAL || what == IP_CWD || what == IP_ALL); | |
262 | int exe_f = (what == IP_MINIMAL || what == IP_EXE || what == IP_ALL); | |
263 | int mappings_f = (what == IP_MAPPINGS || what == IP_ALL); | |
264 | int status_f = (what == IP_STATUS || what == IP_ALL); | |
265 | int stat_f = (what == IP_STAT || what == IP_ALL); | |
266 | char filename[100]; | |
267 | gdb_byte *data; | |
268 | int target_errno; | |
269 | ||
270 | if (args && isdigit (args[0])) | |
271 | pid = strtoul (args, &args, 10); | |
272 | else | |
273 | { | |
274 | if (!target_has_execution) | |
275 | error (_("No current process: you must name one.")); | |
276 | if (current_inferior ()->fake_pid_p) | |
277 | error (_("Can't determine the current process's PID: you must name one.")); | |
278 | ||
279 | pid = current_inferior ()->pid; | |
280 | } | |
281 | ||
282 | args = skip_spaces (args); | |
283 | if (args && args[0]) | |
284 | error (_("Too many parameters: %s"), args); | |
285 | ||
286 | printf_filtered (_("process %ld\n"), pid); | |
287 | if (cmdline_f) | |
288 | { | |
289 | xsnprintf (filename, sizeof filename, "/proc/%ld/cmdline", pid); | |
290 | data = target_fileio_read_stralloc (filename); | |
291 | if (data) | |
292 | { | |
293 | struct cleanup *cleanup = make_cleanup (xfree, data); | |
294 | printf_filtered ("cmdline = '%s'\n", data); | |
295 | do_cleanups (cleanup); | |
296 | } | |
297 | else | |
298 | warning (_("unable to open /proc file '%s'"), filename); | |
299 | } | |
300 | if (cwd_f) | |
301 | { | |
302 | xsnprintf (filename, sizeof filename, "/proc/%ld/cwd", pid); | |
303 | data = target_fileio_readlink (filename, &target_errno); | |
304 | if (data) | |
305 | { | |
306 | struct cleanup *cleanup = make_cleanup (xfree, data); | |
307 | printf_filtered ("cwd = '%s'\n", data); | |
308 | do_cleanups (cleanup); | |
309 | } | |
310 | else | |
311 | warning (_("unable to read link '%s'"), filename); | |
312 | } | |
313 | if (exe_f) | |
314 | { | |
315 | xsnprintf (filename, sizeof filename, "/proc/%ld/exe", pid); | |
316 | data = target_fileio_readlink (filename, &target_errno); | |
317 | if (data) | |
318 | { | |
319 | struct cleanup *cleanup = make_cleanup (xfree, data); | |
320 | printf_filtered ("exe = '%s'\n", data); | |
321 | do_cleanups (cleanup); | |
322 | } | |
323 | else | |
324 | warning (_("unable to read link '%s'"), filename); | |
325 | } | |
326 | if (mappings_f) | |
327 | { | |
328 | xsnprintf (filename, sizeof filename, "/proc/%ld/maps", pid); | |
329 | data = target_fileio_read_stralloc (filename); | |
330 | if (data) | |
331 | { | |
332 | struct cleanup *cleanup = make_cleanup (xfree, data); | |
333 | char *line; | |
334 | ||
335 | printf_filtered (_("Mapped address spaces:\n\n")); | |
336 | if (gdbarch_addr_bit (gdbarch) == 32) | |
337 | { | |
338 | printf_filtered ("\t%10s %10s %10s %10s %s\n", | |
339 | "Start Addr", | |
340 | " End Addr", | |
341 | " Size", " Offset", "objfile"); | |
342 | } | |
343 | else | |
344 | { | |
345 | printf_filtered (" %18s %18s %10s %10s %s\n", | |
346 | "Start Addr", | |
347 | " End Addr", | |
348 | " Size", " Offset", "objfile"); | |
349 | } | |
350 | ||
351 | for (line = strtok (data, "\n"); line; line = strtok (NULL, "\n")) | |
352 | { | |
353 | ULONGEST addr, endaddr, offset, inode; | |
354 | const char *permissions, *device, *filename; | |
355 | size_t permissions_len, device_len; | |
356 | ||
357 | read_mapping (line, &addr, &endaddr, | |
358 | &permissions, &permissions_len, | |
359 | &offset, &device, &device_len, | |
360 | &inode, &filename); | |
361 | ||
362 | if (gdbarch_addr_bit (gdbarch) == 32) | |
363 | { | |
364 | printf_filtered ("\t%10s %10s %10s %10s %s\n", | |
365 | paddress (gdbarch, addr), | |
366 | paddress (gdbarch, endaddr), | |
367 | hex_string (endaddr - addr), | |
368 | hex_string (offset), | |
369 | *filename? filename : ""); | |
370 | } | |
371 | else | |
372 | { | |
373 | printf_filtered (" %18s %18s %10s %10s %s\n", | |
374 | paddress (gdbarch, addr), | |
375 | paddress (gdbarch, endaddr), | |
376 | hex_string (endaddr - addr), | |
377 | hex_string (offset), | |
378 | *filename? filename : ""); | |
379 | } | |
380 | } | |
381 | ||
382 | do_cleanups (cleanup); | |
383 | } | |
384 | else | |
385 | warning (_("unable to open /proc file '%s'"), filename); | |
386 | } | |
387 | if (status_f) | |
388 | { | |
389 | xsnprintf (filename, sizeof filename, "/proc/%ld/status", pid); | |
390 | data = target_fileio_read_stralloc (filename); | |
391 | if (data) | |
392 | { | |
393 | struct cleanup *cleanup = make_cleanup (xfree, data); | |
394 | puts_filtered (data); | |
395 | do_cleanups (cleanup); | |
396 | } | |
397 | else | |
398 | warning (_("unable to open /proc file '%s'"), filename); | |
399 | } | |
400 | if (stat_f) | |
401 | { | |
402 | xsnprintf (filename, sizeof filename, "/proc/%ld/stat", pid); | |
403 | data = target_fileio_read_stralloc (filename); | |
404 | if (data) | |
405 | { | |
406 | struct cleanup *cleanup = make_cleanup (xfree, data); | |
407 | const char *p = data; | |
3030c96e UW |
408 | |
409 | printf_filtered (_("Process: %s\n"), | |
410 | pulongest (strtoulst (p, &p, 10))); | |
411 | ||
412 | while (*p && isspace (*p)) | |
413 | p++; | |
a71b5a38 | 414 | if (*p == '(') |
3030c96e | 415 | { |
a71b5a38 UW |
416 | const char *ep = strchr (p, ')'); |
417 | if (ep != NULL) | |
418 | { | |
419 | printf_filtered ("Exec file: %.*s\n", | |
420 | (int) (ep - p - 1), p + 1); | |
421 | p = ep + 1; | |
422 | } | |
3030c96e UW |
423 | } |
424 | ||
425 | while (*p && isspace (*p)) | |
426 | p++; | |
427 | if (*p) | |
428 | printf_filtered (_("State: %c\n"), *p++); | |
429 | ||
430 | if (*p) | |
431 | printf_filtered (_("Parent process: %s\n"), | |
432 | pulongest (strtoulst (p, &p, 10))); | |
433 | if (*p) | |
434 | printf_filtered (_("Process group: %s\n"), | |
435 | pulongest (strtoulst (p, &p, 10))); | |
436 | if (*p) | |
437 | printf_filtered (_("Session id: %s\n"), | |
438 | pulongest (strtoulst (p, &p, 10))); | |
439 | if (*p) | |
440 | printf_filtered (_("TTY: %s\n"), | |
441 | pulongest (strtoulst (p, &p, 10))); | |
442 | if (*p) | |
443 | printf_filtered (_("TTY owner process group: %s\n"), | |
444 | pulongest (strtoulst (p, &p, 10))); | |
445 | ||
446 | if (*p) | |
447 | printf_filtered (_("Flags: %s\n"), | |
448 | hex_string (strtoulst (p, &p, 10))); | |
449 | if (*p) | |
450 | printf_filtered (_("Minor faults (no memory page): %s\n"), | |
451 | pulongest (strtoulst (p, &p, 10))); | |
452 | if (*p) | |
453 | printf_filtered (_("Minor faults, children: %s\n"), | |
454 | pulongest (strtoulst (p, &p, 10))); | |
455 | if (*p) | |
456 | printf_filtered (_("Major faults (memory page faults): %s\n"), | |
457 | pulongest (strtoulst (p, &p, 10))); | |
458 | if (*p) | |
459 | printf_filtered (_("Major faults, children: %s\n"), | |
460 | pulongest (strtoulst (p, &p, 10))); | |
461 | if (*p) | |
462 | printf_filtered (_("utime: %s\n"), | |
463 | pulongest (strtoulst (p, &p, 10))); | |
464 | if (*p) | |
465 | printf_filtered (_("stime: %s\n"), | |
466 | pulongest (strtoulst (p, &p, 10))); | |
467 | if (*p) | |
468 | printf_filtered (_("utime, children: %s\n"), | |
469 | pulongest (strtoulst (p, &p, 10))); | |
470 | if (*p) | |
471 | printf_filtered (_("stime, children: %s\n"), | |
472 | pulongest (strtoulst (p, &p, 10))); | |
473 | if (*p) | |
474 | printf_filtered (_("jiffies remaining in current " | |
475 | "time slice: %s\n"), | |
476 | pulongest (strtoulst (p, &p, 10))); | |
477 | if (*p) | |
478 | printf_filtered (_("'nice' value: %s\n"), | |
479 | pulongest (strtoulst (p, &p, 10))); | |
480 | if (*p) | |
481 | printf_filtered (_("jiffies until next timeout: %s\n"), | |
482 | pulongest (strtoulst (p, &p, 10))); | |
483 | if (*p) | |
484 | printf_filtered (_("jiffies until next SIGALRM: %s\n"), | |
485 | pulongest (strtoulst (p, &p, 10))); | |
486 | if (*p) | |
487 | printf_filtered (_("start time (jiffies since " | |
488 | "system boot): %s\n"), | |
489 | pulongest (strtoulst (p, &p, 10))); | |
490 | if (*p) | |
491 | printf_filtered (_("Virtual memory size: %s\n"), | |
492 | pulongest (strtoulst (p, &p, 10))); | |
493 | if (*p) | |
494 | printf_filtered (_("Resident set size: %s\n"), | |
495 | pulongest (strtoulst (p, &p, 10))); | |
496 | if (*p) | |
497 | printf_filtered (_("rlim: %s\n"), | |
498 | pulongest (strtoulst (p, &p, 10))); | |
499 | if (*p) | |
500 | printf_filtered (_("Start of text: %s\n"), | |
501 | hex_string (strtoulst (p, &p, 10))); | |
502 | if (*p) | |
503 | printf_filtered (_("End of text: %s\n"), | |
504 | hex_string (strtoulst (p, &p, 10))); | |
505 | if (*p) | |
506 | printf_filtered (_("Start of stack: %s\n"), | |
507 | hex_string (strtoulst (p, &p, 10))); | |
508 | #if 0 /* Don't know how architecture-dependent the rest is... | |
509 | Anyway the signal bitmap info is available from "status". */ | |
510 | if (*p) | |
511 | printf_filtered (_("Kernel stack pointer: %s\n"), | |
512 | hex_string (strtoulst (p, &p, 10))); | |
513 | if (*p) | |
514 | printf_filtered (_("Kernel instr pointer: %s\n"), | |
515 | hex_string (strtoulst (p, &p, 10))); | |
516 | if (*p) | |
517 | printf_filtered (_("Pending signals bitmap: %s\n"), | |
518 | hex_string (strtoulst (p, &p, 10))); | |
519 | if (*p) | |
520 | printf_filtered (_("Blocked signals bitmap: %s\n"), | |
521 | hex_string (strtoulst (p, &p, 10))); | |
522 | if (*p) | |
523 | printf_filtered (_("Ignored signals bitmap: %s\n"), | |
524 | hex_string (strtoulst (p, &p, 10))); | |
525 | if (*p) | |
526 | printf_filtered (_("Catched signals bitmap: %s\n"), | |
527 | hex_string (strtoulst (p, &p, 10))); | |
528 | if (*p) | |
529 | printf_filtered (_("wchan (system call): %s\n"), | |
530 | hex_string (strtoulst (p, &p, 10))); | |
531 | #endif | |
532 | do_cleanups (cleanup); | |
533 | } | |
534 | else | |
535 | warning (_("unable to open /proc file '%s'"), filename); | |
536 | } | |
537 | } | |
538 | ||
451b7c33 TT |
539 | /* Implement "info proc mappings" for a corefile. */ |
540 | ||
541 | static void | |
542 | linux_core_info_proc_mappings (struct gdbarch *gdbarch, char *args) | |
543 | { | |
544 | asection *section; | |
545 | ULONGEST count, page_size; | |
546 | unsigned char *descdata, *filenames, *descend, *contents; | |
547 | size_t note_size; | |
548 | unsigned int addr_size_bits, addr_size; | |
549 | struct cleanup *cleanup; | |
550 | struct gdbarch *core_gdbarch = gdbarch_from_bfd (core_bfd); | |
551 | /* We assume this for reading 64-bit core files. */ | |
552 | gdb_static_assert (sizeof (ULONGEST) >= 8); | |
553 | ||
554 | section = bfd_get_section_by_name (core_bfd, ".note.linuxcore.file"); | |
555 | if (section == NULL) | |
556 | { | |
557 | warning (_("unable to find mappings in core file")); | |
558 | return; | |
559 | } | |
560 | ||
561 | addr_size_bits = gdbarch_addr_bit (core_gdbarch); | |
562 | addr_size = addr_size_bits / 8; | |
563 | note_size = bfd_get_section_size (section); | |
564 | ||
565 | if (note_size < 2 * addr_size) | |
566 | error (_("malformed core note - too short for header")); | |
567 | ||
568 | contents = xmalloc (note_size); | |
569 | cleanup = make_cleanup (xfree, contents); | |
570 | if (!bfd_get_section_contents (core_bfd, section, contents, 0, note_size)) | |
571 | error (_("could not get core note contents")); | |
572 | ||
573 | descdata = contents; | |
574 | descend = descdata + note_size; | |
575 | ||
576 | if (descdata[note_size - 1] != '\0') | |
577 | error (_("malformed note - does not end with \\0")); | |
578 | ||
579 | count = bfd_get (addr_size_bits, core_bfd, descdata); | |
580 | descdata += addr_size; | |
581 | ||
582 | page_size = bfd_get (addr_size_bits, core_bfd, descdata); | |
583 | descdata += addr_size; | |
584 | ||
585 | if (note_size < 2 * addr_size + count * 3 * addr_size) | |
586 | error (_("malformed note - too short for supplied file count")); | |
587 | ||
588 | printf_filtered (_("Mapped address spaces:\n\n")); | |
589 | if (gdbarch_addr_bit (gdbarch) == 32) | |
590 | { | |
591 | printf_filtered ("\t%10s %10s %10s %10s %s\n", | |
592 | "Start Addr", | |
593 | " End Addr", | |
594 | " Size", " Offset", "objfile"); | |
595 | } | |
596 | else | |
597 | { | |
598 | printf_filtered (" %18s %18s %10s %10s %s\n", | |
599 | "Start Addr", | |
600 | " End Addr", | |
601 | " Size", " Offset", "objfile"); | |
602 | } | |
603 | ||
604 | filenames = descdata + count * 3 * addr_size; | |
605 | while (--count > 0) | |
606 | { | |
607 | ULONGEST start, end, file_ofs; | |
608 | ||
609 | if (filenames == descend) | |
610 | error (_("malformed note - filenames end too early")); | |
611 | ||
612 | start = bfd_get (addr_size_bits, core_bfd, descdata); | |
613 | descdata += addr_size; | |
614 | end = bfd_get (addr_size_bits, core_bfd, descdata); | |
615 | descdata += addr_size; | |
616 | file_ofs = bfd_get (addr_size_bits, core_bfd, descdata); | |
617 | descdata += addr_size; | |
618 | ||
619 | file_ofs *= page_size; | |
620 | ||
621 | if (gdbarch_addr_bit (gdbarch) == 32) | |
622 | printf_filtered ("\t%10s %10s %10s %10s %s\n", | |
623 | paddress (gdbarch, start), | |
624 | paddress (gdbarch, end), | |
625 | hex_string (end - start), | |
626 | hex_string (file_ofs), | |
627 | filenames); | |
628 | else | |
629 | printf_filtered (" %18s %18s %10s %10s %s\n", | |
630 | paddress (gdbarch, start), | |
631 | paddress (gdbarch, end), | |
632 | hex_string (end - start), | |
633 | hex_string (file_ofs), | |
634 | filenames); | |
635 | ||
636 | filenames += 1 + strlen ((char *) filenames); | |
637 | } | |
638 | ||
639 | do_cleanups (cleanup); | |
640 | } | |
641 | ||
642 | /* Implement "info proc" for a corefile. */ | |
643 | ||
644 | static void | |
645 | linux_core_info_proc (struct gdbarch *gdbarch, char *args, | |
646 | enum info_proc_what what) | |
647 | { | |
648 | int exe_f = (what == IP_MINIMAL || what == IP_EXE || what == IP_ALL); | |
649 | int mappings_f = (what == IP_MAPPINGS || what == IP_ALL); | |
650 | ||
651 | if (exe_f) | |
652 | { | |
653 | const char *exe; | |
654 | ||
655 | exe = bfd_core_file_failing_command (core_bfd); | |
656 | if (exe != NULL) | |
657 | printf_filtered ("exe = '%s'\n", exe); | |
658 | else | |
659 | warning (_("unable to find command name in core file")); | |
660 | } | |
661 | ||
662 | if (mappings_f) | |
663 | linux_core_info_proc_mappings (gdbarch, args); | |
664 | ||
665 | if (!exe_f && !mappings_f) | |
666 | error (_("unable to handle request")); | |
667 | } | |
668 | ||
669 | typedef int linux_find_memory_region_ftype (ULONGEST vaddr, ULONGEST size, | |
670 | ULONGEST offset, ULONGEST inode, | |
671 | int read, int write, | |
672 | int exec, int modified, | |
673 | const char *filename, | |
674 | void *data); | |
675 | ||
35c2fab7 UW |
676 | /* List memory regions in the inferior for a corefile. */ |
677 | ||
678 | static int | |
451b7c33 TT |
679 | linux_find_memory_regions_full (struct gdbarch *gdbarch, |
680 | linux_find_memory_region_ftype *func, | |
681 | void *obfd) | |
35c2fab7 UW |
682 | { |
683 | char filename[100]; | |
684 | gdb_byte *data; | |
685 | ||
686 | /* We need to know the real target PID to access /proc. */ | |
687 | if (current_inferior ()->fake_pid_p) | |
688 | return 1; | |
689 | ||
690 | xsnprintf (filename, sizeof filename, | |
4f69f4c2 | 691 | "/proc/%d/smaps", current_inferior ()->pid); |
35c2fab7 | 692 | data = target_fileio_read_stralloc (filename); |
4f69f4c2 JK |
693 | if (data == NULL) |
694 | { | |
695 | /* Older Linux kernels did not support /proc/PID/smaps. */ | |
696 | xsnprintf (filename, sizeof filename, | |
697 | "/proc/%d/maps", current_inferior ()->pid); | |
698 | data = target_fileio_read_stralloc (filename); | |
699 | } | |
35c2fab7 UW |
700 | if (data) |
701 | { | |
702 | struct cleanup *cleanup = make_cleanup (xfree, data); | |
703 | char *line; | |
704 | ||
4f69f4c2 JK |
705 | line = strtok (data, "\n"); |
706 | while (line) | |
35c2fab7 UW |
707 | { |
708 | ULONGEST addr, endaddr, offset, inode; | |
709 | const char *permissions, *device, *filename; | |
710 | size_t permissions_len, device_len; | |
711 | int read, write, exec; | |
4f69f4c2 | 712 | int modified = 0, has_anonymous = 0; |
35c2fab7 UW |
713 | |
714 | read_mapping (line, &addr, &endaddr, &permissions, &permissions_len, | |
715 | &offset, &device, &device_len, &inode, &filename); | |
716 | ||
717 | /* Decode permissions. */ | |
718 | read = (memchr (permissions, 'r', permissions_len) != 0); | |
719 | write = (memchr (permissions, 'w', permissions_len) != 0); | |
720 | exec = (memchr (permissions, 'x', permissions_len) != 0); | |
721 | ||
4f69f4c2 JK |
722 | /* Try to detect if region was modified by parsing smaps counters. */ |
723 | for (line = strtok (NULL, "\n"); | |
724 | line && line[0] >= 'A' && line[0] <= 'Z'; | |
725 | line = strtok (NULL, "\n")) | |
726 | { | |
727 | char keyword[64 + 1]; | |
728 | unsigned long number; | |
729 | ||
730 | if (sscanf (line, "%64s%lu kB\n", keyword, &number) != 2) | |
731 | { | |
732 | warning (_("Error parsing {s,}maps file '%s'"), filename); | |
733 | break; | |
734 | } | |
735 | if (strcmp (keyword, "Anonymous:") == 0) | |
736 | has_anonymous = 1; | |
737 | if (number != 0 && (strcmp (keyword, "Shared_Dirty:") == 0 | |
738 | || strcmp (keyword, "Private_Dirty:") == 0 | |
739 | || strcmp (keyword, "Swap:") == 0 | |
740 | || strcmp (keyword, "Anonymous:") == 0)) | |
741 | modified = 1; | |
742 | } | |
743 | ||
744 | /* Older Linux kernels did not support the "Anonymous:" counter. | |
745 | If it is missing, we can't be sure - dump all the pages. */ | |
746 | if (!has_anonymous) | |
747 | modified = 1; | |
748 | ||
35c2fab7 | 749 | /* Invoke the callback function to create the corefile segment. */ |
451b7c33 TT |
750 | func (addr, endaddr - addr, offset, inode, |
751 | read, write, exec, modified, filename, obfd); | |
35c2fab7 UW |
752 | } |
753 | ||
754 | do_cleanups (cleanup); | |
755 | return 0; | |
756 | } | |
757 | ||
758 | return 1; | |
759 | } | |
760 | ||
451b7c33 TT |
761 | /* A structure for passing information through |
762 | linux_find_memory_regions_full. */ | |
763 | ||
764 | struct linux_find_memory_regions_data | |
765 | { | |
766 | /* The original callback. */ | |
767 | ||
768 | find_memory_region_ftype func; | |
769 | ||
770 | /* The original datum. */ | |
771 | ||
772 | void *obfd; | |
773 | }; | |
774 | ||
775 | /* A callback for linux_find_memory_regions that converts between the | |
776 | "full"-style callback and find_memory_region_ftype. */ | |
777 | ||
778 | static int | |
779 | linux_find_memory_regions_thunk (ULONGEST vaddr, ULONGEST size, | |
780 | ULONGEST offset, ULONGEST inode, | |
781 | int read, int write, int exec, int modified, | |
782 | const char *filename, void *arg) | |
783 | { | |
784 | struct linux_find_memory_regions_data *data = arg; | |
785 | ||
786 | return data->func (vaddr, size, read, write, exec, modified, data->obfd); | |
787 | } | |
788 | ||
789 | /* A variant of linux_find_memory_regions_full that is suitable as the | |
790 | gdbarch find_memory_regions method. */ | |
791 | ||
792 | static int | |
793 | linux_find_memory_regions (struct gdbarch *gdbarch, | |
794 | find_memory_region_ftype func, void *obfd) | |
795 | { | |
796 | struct linux_find_memory_regions_data data; | |
797 | ||
798 | data.func = func; | |
799 | data.obfd = obfd; | |
800 | ||
801 | return linux_find_memory_regions_full (gdbarch, | |
802 | linux_find_memory_regions_thunk, | |
803 | &data); | |
804 | } | |
805 | ||
6432734d UW |
806 | /* Determine which signal stopped execution. */ |
807 | ||
808 | static int | |
809 | find_signalled_thread (struct thread_info *info, void *data) | |
810 | { | |
a493e3e2 | 811 | if (info->suspend.stop_signal != GDB_SIGNAL_0 |
6432734d UW |
812 | && ptid_get_pid (info->ptid) == ptid_get_pid (inferior_ptid)) |
813 | return 1; | |
814 | ||
815 | return 0; | |
816 | } | |
817 | ||
2ea28649 | 818 | static enum gdb_signal |
6432734d UW |
819 | find_stop_signal (void) |
820 | { | |
821 | struct thread_info *info = | |
822 | iterate_over_threads (find_signalled_thread, NULL); | |
823 | ||
824 | if (info) | |
825 | return info->suspend.stop_signal; | |
826 | else | |
a493e3e2 | 827 | return GDB_SIGNAL_0; |
6432734d UW |
828 | } |
829 | ||
830 | /* Generate corefile notes for SPU contexts. */ | |
831 | ||
832 | static char * | |
833 | linux_spu_make_corefile_notes (bfd *obfd, char *note_data, int *note_size) | |
834 | { | |
835 | static const char *spu_files[] = | |
836 | { | |
837 | "object-id", | |
838 | "mem", | |
839 | "regs", | |
840 | "fpcr", | |
841 | "lslr", | |
842 | "decr", | |
843 | "decr_status", | |
844 | "signal1", | |
845 | "signal1_type", | |
846 | "signal2", | |
847 | "signal2_type", | |
848 | "event_mask", | |
849 | "event_status", | |
850 | "mbox_info", | |
851 | "ibox_info", | |
852 | "wbox_info", | |
853 | "dma_info", | |
854 | "proxydma_info", | |
855 | }; | |
856 | ||
f5656ead | 857 | enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch ()); |
6432734d UW |
858 | gdb_byte *spu_ids; |
859 | LONGEST i, j, size; | |
860 | ||
861 | /* Determine list of SPU ids. */ | |
862 | size = target_read_alloc (¤t_target, TARGET_OBJECT_SPU, | |
863 | NULL, &spu_ids); | |
864 | ||
865 | /* Generate corefile notes for each SPU file. */ | |
866 | for (i = 0; i < size; i += 4) | |
867 | { | |
868 | int fd = extract_unsigned_integer (spu_ids + i, 4, byte_order); | |
869 | ||
870 | for (j = 0; j < sizeof (spu_files) / sizeof (spu_files[0]); j++) | |
871 | { | |
872 | char annex[32], note_name[32]; | |
873 | gdb_byte *spu_data; | |
874 | LONGEST spu_len; | |
875 | ||
876 | xsnprintf (annex, sizeof annex, "%d/%s", fd, spu_files[j]); | |
877 | spu_len = target_read_alloc (¤t_target, TARGET_OBJECT_SPU, | |
878 | annex, &spu_data); | |
879 | if (spu_len > 0) | |
880 | { | |
881 | xsnprintf (note_name, sizeof note_name, "SPU/%s", annex); | |
882 | note_data = elfcore_write_note (obfd, note_data, note_size, | |
883 | note_name, NT_SPU, | |
884 | spu_data, spu_len); | |
885 | xfree (spu_data); | |
886 | ||
887 | if (!note_data) | |
888 | { | |
889 | xfree (spu_ids); | |
890 | return NULL; | |
891 | } | |
892 | } | |
893 | } | |
894 | } | |
895 | ||
896 | if (size > 0) | |
897 | xfree (spu_ids); | |
898 | ||
899 | return note_data; | |
900 | } | |
901 | ||
451b7c33 TT |
902 | /* This is used to pass information from |
903 | linux_make_mappings_corefile_notes through | |
904 | linux_find_memory_regions_full. */ | |
905 | ||
906 | struct linux_make_mappings_data | |
907 | { | |
908 | /* Number of files mapped. */ | |
909 | ULONGEST file_count; | |
910 | ||
911 | /* The obstack for the main part of the data. */ | |
912 | struct obstack *data_obstack; | |
913 | ||
914 | /* The filename obstack. */ | |
915 | struct obstack *filename_obstack; | |
916 | ||
917 | /* The architecture's "long" type. */ | |
918 | struct type *long_type; | |
919 | }; | |
920 | ||
921 | static linux_find_memory_region_ftype linux_make_mappings_callback; | |
922 | ||
923 | /* A callback for linux_find_memory_regions_full that updates the | |
924 | mappings data for linux_make_mappings_corefile_notes. */ | |
925 | ||
926 | static int | |
927 | linux_make_mappings_callback (ULONGEST vaddr, ULONGEST size, | |
928 | ULONGEST offset, ULONGEST inode, | |
929 | int read, int write, int exec, int modified, | |
930 | const char *filename, void *data) | |
931 | { | |
932 | struct linux_make_mappings_data *map_data = data; | |
933 | gdb_byte buf[sizeof (ULONGEST)]; | |
934 | ||
935 | if (*filename == '\0' || inode == 0) | |
936 | return 0; | |
937 | ||
938 | ++map_data->file_count; | |
939 | ||
940 | pack_long (buf, map_data->long_type, vaddr); | |
941 | obstack_grow (map_data->data_obstack, buf, TYPE_LENGTH (map_data->long_type)); | |
942 | pack_long (buf, map_data->long_type, vaddr + size); | |
943 | obstack_grow (map_data->data_obstack, buf, TYPE_LENGTH (map_data->long_type)); | |
944 | pack_long (buf, map_data->long_type, offset); | |
945 | obstack_grow (map_data->data_obstack, buf, TYPE_LENGTH (map_data->long_type)); | |
946 | ||
947 | obstack_grow_str0 (map_data->filename_obstack, filename); | |
948 | ||
949 | return 0; | |
950 | } | |
951 | ||
952 | /* Write the file mapping data to the core file, if possible. OBFD is | |
953 | the output BFD. NOTE_DATA is the current note data, and NOTE_SIZE | |
954 | is a pointer to the note size. Returns the new NOTE_DATA and | |
955 | updates NOTE_SIZE. */ | |
956 | ||
957 | static char * | |
958 | linux_make_mappings_corefile_notes (struct gdbarch *gdbarch, bfd *obfd, | |
959 | char *note_data, int *note_size) | |
960 | { | |
961 | struct cleanup *cleanup; | |
962 | struct obstack data_obstack, filename_obstack; | |
963 | struct linux_make_mappings_data mapping_data; | |
964 | struct type *long_type | |
965 | = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch), 0, "long"); | |
966 | gdb_byte buf[sizeof (ULONGEST)]; | |
967 | ||
968 | obstack_init (&data_obstack); | |
969 | cleanup = make_cleanup_obstack_free (&data_obstack); | |
970 | obstack_init (&filename_obstack); | |
971 | make_cleanup_obstack_free (&filename_obstack); | |
972 | ||
973 | mapping_data.file_count = 0; | |
974 | mapping_data.data_obstack = &data_obstack; | |
975 | mapping_data.filename_obstack = &filename_obstack; | |
976 | mapping_data.long_type = long_type; | |
977 | ||
978 | /* Reserve space for the count. */ | |
979 | obstack_blank (&data_obstack, TYPE_LENGTH (long_type)); | |
980 | /* We always write the page size as 1 since we have no good way to | |
981 | determine the correct value. */ | |
982 | pack_long (buf, long_type, 1); | |
983 | obstack_grow (&data_obstack, buf, TYPE_LENGTH (long_type)); | |
984 | ||
985 | linux_find_memory_regions_full (gdbarch, linux_make_mappings_callback, | |
986 | &mapping_data); | |
987 | ||
988 | if (mapping_data.file_count != 0) | |
989 | { | |
990 | /* Write the count to the obstack. */ | |
991 | pack_long (obstack_base (&data_obstack), long_type, | |
992 | mapping_data.file_count); | |
993 | ||
994 | /* Copy the filenames to the data obstack. */ | |
995 | obstack_grow (&data_obstack, obstack_base (&filename_obstack), | |
996 | obstack_object_size (&filename_obstack)); | |
997 | ||
998 | note_data = elfcore_write_note (obfd, note_data, note_size, | |
999 | "CORE", NT_FILE, | |
1000 | obstack_base (&data_obstack), | |
1001 | obstack_object_size (&data_obstack)); | |
1002 | } | |
1003 | ||
1004 | do_cleanups (cleanup); | |
1005 | return note_data; | |
1006 | } | |
1007 | ||
6432734d UW |
1008 | /* Records the thread's register state for the corefile note |
1009 | section. */ | |
1010 | ||
1011 | static char * | |
1012 | linux_collect_thread_registers (const struct regcache *regcache, | |
1013 | ptid_t ptid, bfd *obfd, | |
1014 | char *note_data, int *note_size, | |
2ea28649 | 1015 | enum gdb_signal stop_signal) |
6432734d UW |
1016 | { |
1017 | struct gdbarch *gdbarch = get_regcache_arch (regcache); | |
1018 | struct core_regset_section *sect_list; | |
1019 | unsigned long lwp; | |
1020 | ||
1021 | sect_list = gdbarch_core_regset_sections (gdbarch); | |
1022 | gdb_assert (sect_list); | |
1023 | ||
1024 | /* For remote targets the LWP may not be available, so use the TID. */ | |
1025 | lwp = ptid_get_lwp (ptid); | |
1026 | if (!lwp) | |
1027 | lwp = ptid_get_tid (ptid); | |
1028 | ||
1029 | while (sect_list->sect_name != NULL) | |
1030 | { | |
1031 | const struct regset *regset; | |
1032 | char *buf; | |
1033 | ||
1034 | regset = gdbarch_regset_from_core_section (gdbarch, | |
1035 | sect_list->sect_name, | |
1036 | sect_list->size); | |
1037 | gdb_assert (regset && regset->collect_regset); | |
1038 | ||
1039 | buf = xmalloc (sect_list->size); | |
1040 | regset->collect_regset (regset, regcache, -1, buf, sect_list->size); | |
1041 | ||
1042 | /* PRSTATUS still needs to be treated specially. */ | |
1043 | if (strcmp (sect_list->sect_name, ".reg") == 0) | |
1044 | note_data = (char *) elfcore_write_prstatus | |
1045 | (obfd, note_data, note_size, lwp, | |
2ea28649 | 1046 | gdb_signal_to_host (stop_signal), buf); |
6432734d UW |
1047 | else |
1048 | note_data = (char *) elfcore_write_register_note | |
1049 | (obfd, note_data, note_size, | |
1050 | sect_list->sect_name, buf, sect_list->size); | |
1051 | xfree (buf); | |
1052 | sect_list++; | |
1053 | ||
1054 | if (!note_data) | |
1055 | return NULL; | |
1056 | } | |
1057 | ||
1058 | return note_data; | |
1059 | } | |
1060 | ||
9015683b TT |
1061 | /* Fetch the siginfo data for the current thread, if it exists. If |
1062 | there is no data, or we could not read it, return NULL. Otherwise, | |
1063 | return a newly malloc'd buffer holding the data and fill in *SIZE | |
1064 | with the size of the data. The caller is responsible for freeing | |
1065 | the data. */ | |
1066 | ||
1067 | static gdb_byte * | |
1068 | linux_get_siginfo_data (struct gdbarch *gdbarch, LONGEST *size) | |
1069 | { | |
1070 | struct type *siginfo_type; | |
1071 | gdb_byte *buf; | |
1072 | LONGEST bytes_read; | |
1073 | struct cleanup *cleanups; | |
1074 | ||
1075 | if (!gdbarch_get_siginfo_type_p (gdbarch)) | |
1076 | return NULL; | |
1077 | ||
1078 | siginfo_type = gdbarch_get_siginfo_type (gdbarch); | |
1079 | ||
1080 | buf = xmalloc (TYPE_LENGTH (siginfo_type)); | |
1081 | cleanups = make_cleanup (xfree, buf); | |
1082 | ||
1083 | bytes_read = target_read (¤t_target, TARGET_OBJECT_SIGNAL_INFO, NULL, | |
1084 | buf, 0, TYPE_LENGTH (siginfo_type)); | |
1085 | if (bytes_read == TYPE_LENGTH (siginfo_type)) | |
1086 | { | |
1087 | discard_cleanups (cleanups); | |
1088 | *size = bytes_read; | |
1089 | } | |
1090 | else | |
1091 | { | |
1092 | do_cleanups (cleanups); | |
1093 | buf = NULL; | |
1094 | } | |
1095 | ||
1096 | return buf; | |
1097 | } | |
1098 | ||
6432734d UW |
1099 | struct linux_corefile_thread_data |
1100 | { | |
1101 | struct gdbarch *gdbarch; | |
1102 | int pid; | |
1103 | bfd *obfd; | |
1104 | char *note_data; | |
1105 | int *note_size; | |
1106 | int num_notes; | |
2ea28649 | 1107 | enum gdb_signal stop_signal; |
6432734d UW |
1108 | linux_collect_thread_registers_ftype collect; |
1109 | }; | |
1110 | ||
1111 | /* Called by gdbthread.c once per thread. Records the thread's | |
1112 | register state for the corefile note section. */ | |
1113 | ||
1114 | static int | |
1115 | linux_corefile_thread_callback (struct thread_info *info, void *data) | |
1116 | { | |
1117 | struct linux_corefile_thread_data *args = data; | |
1118 | ||
1119 | if (ptid_get_pid (info->ptid) == args->pid) | |
1120 | { | |
1121 | struct cleanup *old_chain; | |
1122 | struct regcache *regcache; | |
9015683b TT |
1123 | gdb_byte *siginfo_data; |
1124 | LONGEST siginfo_size; | |
1125 | ||
6432734d UW |
1126 | regcache = get_thread_arch_regcache (info->ptid, args->gdbarch); |
1127 | ||
1128 | old_chain = save_inferior_ptid (); | |
1129 | inferior_ptid = info->ptid; | |
1130 | target_fetch_registers (regcache, -1); | |
9015683b | 1131 | siginfo_data = linux_get_siginfo_data (args->gdbarch, &siginfo_size); |
6432734d UW |
1132 | do_cleanups (old_chain); |
1133 | ||
9015683b TT |
1134 | old_chain = make_cleanup (xfree, siginfo_data); |
1135 | ||
6432734d UW |
1136 | args->note_data = args->collect (regcache, info->ptid, args->obfd, |
1137 | args->note_data, args->note_size, | |
1138 | args->stop_signal); | |
1139 | args->num_notes++; | |
9015683b TT |
1140 | |
1141 | if (siginfo_data != NULL) | |
1142 | { | |
1143 | args->note_data = elfcore_write_note (args->obfd, | |
1144 | args->note_data, | |
1145 | args->note_size, | |
1146 | "CORE", NT_SIGINFO, | |
1147 | siginfo_data, siginfo_size); | |
1148 | args->num_notes++; | |
1149 | } | |
1150 | ||
1151 | do_cleanups (old_chain); | |
6432734d UW |
1152 | } |
1153 | ||
1154 | return !args->note_data; | |
1155 | } | |
1156 | ||
b3ac9c77 SDJ |
1157 | /* Fill the PRPSINFO structure with information about the process being |
1158 | debugged. Returns 1 in case of success, 0 for failures. Please note that | |
1159 | even if the structure cannot be entirely filled (e.g., GDB was unable to | |
1160 | gather information about the process UID/GID), this function will still | |
1161 | return 1 since some information was already recorded. It will only return | |
1162 | 0 iff nothing can be gathered. */ | |
1163 | ||
1164 | static int | |
1165 | linux_fill_prpsinfo (struct elf_internal_linux_prpsinfo *p) | |
1166 | { | |
1167 | /* The filename which we will use to obtain some info about the process. | |
1168 | We will basically use this to store the `/proc/PID/FILENAME' file. */ | |
1169 | char filename[100]; | |
1170 | /* The full name of the program which generated the corefile. */ | |
1171 | char *fname; | |
1172 | /* The basename of the executable. */ | |
1173 | const char *basename; | |
1174 | /* The arguments of the program. */ | |
1175 | char *psargs; | |
1176 | char *infargs; | |
1177 | /* The contents of `/proc/PID/stat' and `/proc/PID/status' files. */ | |
1178 | char *proc_stat, *proc_status; | |
1179 | /* Temporary buffer. */ | |
1180 | char *tmpstr; | |
1181 | /* The valid states of a process, according to the Linux kernel. */ | |
1182 | const char valid_states[] = "RSDTZW"; | |
1183 | /* The program state. */ | |
1184 | const char *prog_state; | |
1185 | /* The state of the process. */ | |
1186 | char pr_sname; | |
1187 | /* The PID of the program which generated the corefile. */ | |
1188 | pid_t pid; | |
1189 | /* Process flags. */ | |
1190 | unsigned int pr_flag; | |
1191 | /* Process nice value. */ | |
1192 | long pr_nice; | |
1193 | /* The number of fields read by `sscanf'. */ | |
1194 | int n_fields = 0; | |
1195 | /* Cleanups. */ | |
1196 | struct cleanup *c; | |
1197 | int i; | |
1198 | ||
1199 | gdb_assert (p != NULL); | |
1200 | ||
1201 | /* Obtaining PID and filename. */ | |
1202 | pid = ptid_get_pid (inferior_ptid); | |
1203 | xsnprintf (filename, sizeof (filename), "/proc/%d/cmdline", (int) pid); | |
1204 | fname = target_fileio_read_stralloc (filename); | |
1205 | ||
1206 | if (fname == NULL || *fname == '\0') | |
1207 | { | |
1208 | /* No program name was read, so we won't be able to retrieve more | |
1209 | information about the process. */ | |
1210 | xfree (fname); | |
1211 | return 0; | |
1212 | } | |
1213 | ||
1214 | c = make_cleanup (xfree, fname); | |
1215 | memset (p, 0, sizeof (*p)); | |
1216 | ||
1217 | /* Defining the PID. */ | |
1218 | p->pr_pid = pid; | |
1219 | ||
1220 | /* Copying the program name. Only the basename matters. */ | |
1221 | basename = lbasename (fname); | |
1222 | strncpy (p->pr_fname, basename, sizeof (p->pr_fname)); | |
1223 | p->pr_fname[sizeof (p->pr_fname) - 1] = '\0'; | |
1224 | ||
1225 | infargs = get_inferior_args (); | |
1226 | ||
1227 | psargs = xstrdup (fname); | |
1228 | if (infargs != NULL) | |
1229 | psargs = reconcat (psargs, psargs, " ", infargs, NULL); | |
1230 | ||
1231 | make_cleanup (xfree, psargs); | |
1232 | ||
1233 | strncpy (p->pr_psargs, psargs, sizeof (p->pr_psargs)); | |
1234 | p->pr_psargs[sizeof (p->pr_psargs) - 1] = '\0'; | |
1235 | ||
1236 | xsnprintf (filename, sizeof (filename), "/proc/%d/stat", (int) pid); | |
1237 | proc_stat = target_fileio_read_stralloc (filename); | |
1238 | make_cleanup (xfree, proc_stat); | |
1239 | ||
1240 | if (proc_stat == NULL || *proc_stat == '\0') | |
1241 | { | |
1242 | /* Despite being unable to read more information about the | |
1243 | process, we return 1 here because at least we have its | |
1244 | command line, PID and arguments. */ | |
1245 | do_cleanups (c); | |
1246 | return 1; | |
1247 | } | |
1248 | ||
1249 | /* Ok, we have the stats. It's time to do a little parsing of the | |
1250 | contents of the buffer, so that we end up reading what we want. | |
1251 | ||
1252 | The following parsing mechanism is strongly based on the | |
1253 | information generated by the `fs/proc/array.c' file, present in | |
1254 | the Linux kernel tree. More details about how the information is | |
1255 | displayed can be obtained by seeing the manpage of proc(5), | |
1256 | specifically under the entry of `/proc/[pid]/stat'. */ | |
1257 | ||
1258 | /* Getting rid of the PID, since we already have it. */ | |
1259 | while (isdigit (*proc_stat)) | |
1260 | ++proc_stat; | |
1261 | ||
1262 | proc_stat = skip_spaces (proc_stat); | |
1263 | ||
1264 | /* Getting rid of the executable name, since we already have it. We | |
1265 | know that this name will be in parentheses, so we can safely look | |
1266 | for the close-paren. */ | |
1267 | while (*proc_stat != ')') | |
1268 | ++proc_stat; | |
1269 | ++proc_stat; | |
1270 | ||
1271 | proc_stat = skip_spaces (proc_stat); | |
1272 | ||
1273 | n_fields = sscanf (proc_stat, | |
1274 | "%c" /* Process state. */ | |
1275 | "%d%d%d" /* Parent PID, group ID, session ID. */ | |
1276 | "%*d%*d" /* tty_nr, tpgid (not used). */ | |
1277 | "%u" /* Flags. */ | |
1278 | "%*s%*s%*s%*s" /* minflt, cminflt, majflt, | |
1279 | cmajflt (not used). */ | |
1280 | "%*s%*s%*s%*s" /* utime, stime, cutime, | |
1281 | cstime (not used). */ | |
1282 | "%*s" /* Priority (not used). */ | |
1283 | "%ld", /* Nice. */ | |
1284 | &pr_sname, | |
1285 | &p->pr_ppid, &p->pr_pgrp, &p->pr_sid, | |
1286 | &pr_flag, | |
1287 | &pr_nice); | |
1288 | ||
1289 | if (n_fields != 6) | |
1290 | { | |
1291 | /* Again, we couldn't read the complementary information about | |
1292 | the process state. However, we already have minimal | |
1293 | information, so we just return 1 here. */ | |
1294 | do_cleanups (c); | |
1295 | return 1; | |
1296 | } | |
1297 | ||
1298 | /* Filling the structure fields. */ | |
1299 | prog_state = strchr (valid_states, pr_sname); | |
1300 | if (prog_state != NULL) | |
1301 | p->pr_state = prog_state - valid_states; | |
1302 | else | |
1303 | { | |
1304 | /* Zero means "Running". */ | |
1305 | p->pr_state = 0; | |
1306 | } | |
1307 | ||
1308 | p->pr_sname = p->pr_state > 5 ? '.' : pr_sname; | |
1309 | p->pr_zomb = p->pr_sname == 'Z'; | |
1310 | p->pr_nice = pr_nice; | |
1311 | p->pr_flag = pr_flag; | |
1312 | ||
1313 | /* Finally, obtaining the UID and GID. For that, we read and parse the | |
1314 | contents of the `/proc/PID/status' file. */ | |
1315 | xsnprintf (filename, sizeof (filename), "/proc/%d/status", (int) pid); | |
1316 | proc_status = target_fileio_read_stralloc (filename); | |
1317 | make_cleanup (xfree, proc_status); | |
1318 | ||
1319 | if (proc_status == NULL || *proc_status == '\0') | |
1320 | { | |
1321 | /* Returning 1 since we already have a bunch of information. */ | |
1322 | do_cleanups (c); | |
1323 | return 1; | |
1324 | } | |
1325 | ||
1326 | /* Extracting the UID. */ | |
1327 | tmpstr = strstr (proc_status, "Uid:"); | |
1328 | if (tmpstr != NULL) | |
1329 | { | |
1330 | /* Advancing the pointer to the beginning of the UID. */ | |
1331 | tmpstr += sizeof ("Uid:"); | |
1332 | while (*tmpstr != '\0' && !isdigit (*tmpstr)) | |
1333 | ++tmpstr; | |
1334 | ||
1335 | if (isdigit (*tmpstr)) | |
1336 | p->pr_uid = strtol (tmpstr, &tmpstr, 10); | |
1337 | } | |
1338 | ||
1339 | /* Extracting the GID. */ | |
1340 | tmpstr = strstr (proc_status, "Gid:"); | |
1341 | if (tmpstr != NULL) | |
1342 | { | |
1343 | /* Advancing the pointer to the beginning of the GID. */ | |
1344 | tmpstr += sizeof ("Gid:"); | |
1345 | while (*tmpstr != '\0' && !isdigit (*tmpstr)) | |
1346 | ++tmpstr; | |
1347 | ||
1348 | if (isdigit (*tmpstr)) | |
1349 | p->pr_gid = strtol (tmpstr, &tmpstr, 10); | |
1350 | } | |
1351 | ||
1352 | do_cleanups (c); | |
1353 | ||
1354 | return 1; | |
1355 | } | |
1356 | ||
6432734d UW |
1357 | /* Fills the "to_make_corefile_note" target vector. Builds the note |
1358 | section for a corefile, and returns it in a malloc buffer. */ | |
1359 | ||
1360 | char * | |
1361 | linux_make_corefile_notes (struct gdbarch *gdbarch, bfd *obfd, int *note_size, | |
1362 | linux_collect_thread_registers_ftype collect) | |
1363 | { | |
1364 | struct linux_corefile_thread_data thread_args; | |
b3ac9c77 | 1365 | struct elf_internal_linux_prpsinfo prpsinfo; |
6432734d UW |
1366 | char *note_data = NULL; |
1367 | gdb_byte *auxv; | |
1368 | int auxv_len; | |
1369 | ||
b3ac9c77 | 1370 | if (linux_fill_prpsinfo (&prpsinfo)) |
6432734d | 1371 | { |
b3ac9c77 SDJ |
1372 | if (gdbarch_elfcore_write_linux_prpsinfo_p (gdbarch)) |
1373 | { | |
1374 | note_data = gdbarch_elfcore_write_linux_prpsinfo (gdbarch, obfd, | |
1375 | note_data, note_size, | |
1376 | &prpsinfo); | |
1377 | } | |
1378 | else | |
1379 | { | |
1380 | if (gdbarch_ptr_bit (gdbarch) == 64) | |
1381 | note_data = elfcore_write_linux_prpsinfo64 (obfd, | |
1382 | note_data, note_size, | |
1383 | &prpsinfo); | |
1384 | else | |
1385 | note_data = elfcore_write_linux_prpsinfo32 (obfd, | |
1386 | note_data, note_size, | |
1387 | &prpsinfo); | |
1388 | } | |
6432734d UW |
1389 | } |
1390 | ||
1391 | /* Thread register information. */ | |
1392 | thread_args.gdbarch = gdbarch; | |
1393 | thread_args.pid = ptid_get_pid (inferior_ptid); | |
1394 | thread_args.obfd = obfd; | |
1395 | thread_args.note_data = note_data; | |
1396 | thread_args.note_size = note_size; | |
1397 | thread_args.num_notes = 0; | |
1398 | thread_args.stop_signal = find_stop_signal (); | |
1399 | thread_args.collect = collect; | |
1400 | iterate_over_threads (linux_corefile_thread_callback, &thread_args); | |
1401 | note_data = thread_args.note_data; | |
1402 | if (!note_data) | |
1403 | return NULL; | |
1404 | ||
1405 | /* Auxillary vector. */ | |
1406 | auxv_len = target_read_alloc (¤t_target, TARGET_OBJECT_AUXV, | |
1407 | NULL, &auxv); | |
1408 | if (auxv_len > 0) | |
1409 | { | |
1410 | note_data = elfcore_write_note (obfd, note_data, note_size, | |
1411 | "CORE", NT_AUXV, auxv, auxv_len); | |
1412 | xfree (auxv); | |
1413 | ||
1414 | if (!note_data) | |
1415 | return NULL; | |
1416 | } | |
1417 | ||
1418 | /* SPU information. */ | |
1419 | note_data = linux_spu_make_corefile_notes (obfd, note_data, note_size); | |
1420 | if (!note_data) | |
1421 | return NULL; | |
1422 | ||
451b7c33 TT |
1423 | /* File mappings. */ |
1424 | note_data = linux_make_mappings_corefile_notes (gdbarch, obfd, | |
1425 | note_data, note_size); | |
1426 | ||
6432734d UW |
1427 | make_cleanup (xfree, note_data); |
1428 | return note_data; | |
1429 | } | |
1430 | ||
1431 | static char * | |
1432 | linux_make_corefile_notes_1 (struct gdbarch *gdbarch, bfd *obfd, int *note_size) | |
1433 | { | |
1434 | /* FIXME: uweigand/2011-10-06: Once all GNU/Linux architectures have been | |
1435 | converted to gdbarch_core_regset_sections, we no longer need to fall back | |
1436 | to the target method at this point. */ | |
1437 | ||
1438 | if (!gdbarch_core_regset_sections (gdbarch)) | |
1439 | return target_make_corefile_notes (obfd, note_size); | |
1440 | else | |
1441 | return linux_make_corefile_notes (gdbarch, obfd, note_size, | |
1442 | linux_collect_thread_registers); | |
1443 | } | |
1444 | ||
a5ee0f0c PA |
1445 | /* To be called from the various GDB_OSABI_LINUX handlers for the |
1446 | various GNU/Linux architectures and machine types. */ | |
1447 | ||
1448 | void | |
1449 | linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) | |
1450 | { | |
1451 | set_gdbarch_core_pid_to_str (gdbarch, linux_core_pid_to_str); | |
3030c96e | 1452 | set_gdbarch_info_proc (gdbarch, linux_info_proc); |
451b7c33 | 1453 | set_gdbarch_core_info_proc (gdbarch, linux_core_info_proc); |
35c2fab7 | 1454 | set_gdbarch_find_memory_regions (gdbarch, linux_find_memory_regions); |
6432734d | 1455 | set_gdbarch_make_corefile_notes (gdbarch, linux_make_corefile_notes_1); |
33fbcbee PA |
1456 | set_gdbarch_has_shared_address_space (gdbarch, |
1457 | linux_has_shared_address_space); | |
a5ee0f0c | 1458 | } |
06253dd3 | 1459 | |
70221824 PA |
1460 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
1461 | extern initialize_file_ftype _initialize_linux_tdep; | |
1462 | ||
06253dd3 JK |
1463 | void |
1464 | _initialize_linux_tdep (void) | |
1465 | { | |
1466 | linux_gdbarch_data_handle = | |
1467 | gdbarch_data_register_post_init (init_linux_gdbarch_data); | |
1468 | } |