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4aa995e1 PA |
1 | /* Target-dependent code for GNU/Linux, architecture independent. |
2 | ||
32d0add0 | 3 | Copyright (C) 2009-2015 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" | |
cdfa0b0a | 35 | #include "observer.h" |
3bc3cebe JK |
36 | #include "objfiles.h" |
37 | #include "infcall.h" | |
3030c96e UW |
38 | |
39 | #include <ctype.h> | |
4aa995e1 | 40 | |
eb14d406 SDJ |
41 | /* This enum represents the signals' numbers on a generic architecture |
42 | running the Linux kernel. The definition of "generic" comes from | |
43 | the file <include/uapi/asm-generic/signal.h>, from the Linux kernel | |
44 | tree, which is the "de facto" implementation of signal numbers to | |
45 | be used by new architecture ports. | |
46 | ||
47 | For those architectures which have differences between the generic | |
48 | standard (e.g., Alpha), we define the different signals (and *only* | |
49 | those) in the specific target-dependent file (e.g., | |
50 | alpha-linux-tdep.c, for Alpha). Please refer to the architecture's | |
51 | tdep file for more information. | |
52 | ||
53 | ARM deserves a special mention here. On the file | |
54 | <arch/arm/include/uapi/asm/signal.h>, it defines only one different | |
55 | (and ARM-only) signal, which is SIGSWI, with the same number as | |
56 | SIGRTMIN. This signal is used only for a very specific target, | |
57 | called ArthurOS (from RISCOS). Therefore, we do not handle it on | |
58 | the ARM-tdep file, and we can safely use the generic signal handler | |
59 | here for ARM targets. | |
60 | ||
61 | As stated above, this enum is derived from | |
62 | <include/uapi/asm-generic/signal.h>, from the Linux kernel | |
63 | tree. */ | |
64 | ||
65 | enum | |
66 | { | |
67 | LINUX_SIGHUP = 1, | |
68 | LINUX_SIGINT = 2, | |
69 | LINUX_SIGQUIT = 3, | |
70 | LINUX_SIGILL = 4, | |
71 | LINUX_SIGTRAP = 5, | |
72 | LINUX_SIGABRT = 6, | |
73 | LINUX_SIGIOT = 6, | |
74 | LINUX_SIGBUS = 7, | |
75 | LINUX_SIGFPE = 8, | |
76 | LINUX_SIGKILL = 9, | |
77 | LINUX_SIGUSR1 = 10, | |
78 | LINUX_SIGSEGV = 11, | |
79 | LINUX_SIGUSR2 = 12, | |
80 | LINUX_SIGPIPE = 13, | |
81 | LINUX_SIGALRM = 14, | |
82 | LINUX_SIGTERM = 15, | |
83 | LINUX_SIGSTKFLT = 16, | |
84 | LINUX_SIGCHLD = 17, | |
85 | LINUX_SIGCONT = 18, | |
86 | LINUX_SIGSTOP = 19, | |
87 | LINUX_SIGTSTP = 20, | |
88 | LINUX_SIGTTIN = 21, | |
89 | LINUX_SIGTTOU = 22, | |
90 | LINUX_SIGURG = 23, | |
91 | LINUX_SIGXCPU = 24, | |
92 | LINUX_SIGXFSZ = 25, | |
93 | LINUX_SIGVTALRM = 26, | |
94 | LINUX_SIGPROF = 27, | |
95 | LINUX_SIGWINCH = 28, | |
96 | LINUX_SIGIO = 29, | |
97 | LINUX_SIGPOLL = LINUX_SIGIO, | |
98 | LINUX_SIGPWR = 30, | |
99 | LINUX_SIGSYS = 31, | |
100 | LINUX_SIGUNUSED = 31, | |
101 | ||
102 | LINUX_SIGRTMIN = 32, | |
103 | LINUX_SIGRTMAX = 64, | |
104 | }; | |
105 | ||
06253dd3 JK |
106 | static struct gdbarch_data *linux_gdbarch_data_handle; |
107 | ||
108 | struct linux_gdbarch_data | |
109 | { | |
110 | struct type *siginfo_type; | |
111 | }; | |
112 | ||
113 | static void * | |
114 | init_linux_gdbarch_data (struct gdbarch *gdbarch) | |
115 | { | |
116 | return GDBARCH_OBSTACK_ZALLOC (gdbarch, struct linux_gdbarch_data); | |
117 | } | |
118 | ||
119 | static struct linux_gdbarch_data * | |
120 | get_linux_gdbarch_data (struct gdbarch *gdbarch) | |
121 | { | |
122 | return gdbarch_data (gdbarch, linux_gdbarch_data_handle); | |
123 | } | |
124 | ||
cdfa0b0a PA |
125 | /* Per-inferior data key. */ |
126 | static const struct inferior_data *linux_inferior_data; | |
127 | ||
128 | /* Linux-specific cached data. This is used by GDB for caching | |
129 | purposes for each inferior. This helps reduce the overhead of | |
130 | transfering data from a remote target to the local host. */ | |
131 | struct linux_info | |
132 | { | |
133 | /* Cache of the inferior's vsyscall/vDSO mapping range. Only valid | |
134 | if VSYSCALL_RANGE_P is positive. This is cached because getting | |
135 | at this info requires an auxv lookup (which is itself cached), | |
136 | and looking through the inferior's mappings (which change | |
137 | throughout execution and therefore cannot be cached). */ | |
138 | struct mem_range vsyscall_range; | |
139 | ||
140 | /* Zero if we haven't tried looking up the vsyscall's range before | |
141 | yet. Positive if we tried looking it up, and found it. Negative | |
142 | if we tried looking it up but failed. */ | |
143 | int vsyscall_range_p; | |
144 | }; | |
145 | ||
146 | /* Frees whatever allocated space there is to be freed and sets INF's | |
147 | linux cache data pointer to NULL. */ | |
148 | ||
149 | static void | |
150 | invalidate_linux_cache_inf (struct inferior *inf) | |
151 | { | |
152 | struct linux_info *info; | |
153 | ||
154 | info = inferior_data (inf, linux_inferior_data); | |
155 | if (info != NULL) | |
156 | { | |
157 | xfree (info); | |
158 | set_inferior_data (inf, linux_inferior_data, NULL); | |
159 | } | |
160 | } | |
161 | ||
162 | /* Handles the cleanup of the linux cache for inferior INF. ARG is | |
163 | ignored. Callback for the inferior_appeared and inferior_exit | |
164 | events. */ | |
165 | ||
166 | static void | |
167 | linux_inferior_data_cleanup (struct inferior *inf, void *arg) | |
168 | { | |
169 | invalidate_linux_cache_inf (inf); | |
170 | } | |
171 | ||
172 | /* Fetch the linux cache info for INF. This function always returns a | |
173 | valid INFO pointer. */ | |
174 | ||
175 | static struct linux_info * | |
176 | get_linux_inferior_data (void) | |
177 | { | |
178 | struct linux_info *info; | |
179 | struct inferior *inf = current_inferior (); | |
180 | ||
181 | info = inferior_data (inf, linux_inferior_data); | |
182 | if (info == NULL) | |
183 | { | |
184 | info = XCNEW (struct linux_info); | |
185 | set_inferior_data (inf, linux_inferior_data, info); | |
186 | } | |
187 | ||
188 | return info; | |
189 | } | |
190 | ||
4aa995e1 PA |
191 | /* This function is suitable for architectures that don't |
192 | extend/override the standard siginfo structure. */ | |
193 | ||
194 | struct type * | |
195 | linux_get_siginfo_type (struct gdbarch *gdbarch) | |
196 | { | |
06253dd3 | 197 | struct linux_gdbarch_data *linux_gdbarch_data; |
4aa995e1 PA |
198 | struct type *int_type, *uint_type, *long_type, *void_ptr_type; |
199 | struct type *uid_type, *pid_type; | |
200 | struct type *sigval_type, *clock_type; | |
201 | struct type *siginfo_type, *sifields_type; | |
202 | struct type *type; | |
203 | ||
06253dd3 JK |
204 | linux_gdbarch_data = get_linux_gdbarch_data (gdbarch); |
205 | if (linux_gdbarch_data->siginfo_type != NULL) | |
206 | return linux_gdbarch_data->siginfo_type; | |
207 | ||
e9bb382b UW |
208 | int_type = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), |
209 | 0, "int"); | |
210 | uint_type = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), | |
211 | 1, "unsigned int"); | |
212 | long_type = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch), | |
213 | 0, "long"); | |
4aa995e1 PA |
214 | void_ptr_type = lookup_pointer_type (builtin_type (gdbarch)->builtin_void); |
215 | ||
216 | /* sival_t */ | |
e9bb382b | 217 | sigval_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION); |
4aa995e1 PA |
218 | TYPE_NAME (sigval_type) = xstrdup ("sigval_t"); |
219 | append_composite_type_field (sigval_type, "sival_int", int_type); | |
220 | append_composite_type_field (sigval_type, "sival_ptr", void_ptr_type); | |
221 | ||
222 | /* __pid_t */ | |
e3aa49af MS |
223 | pid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF, |
224 | TYPE_LENGTH (int_type), "__pid_t"); | |
4aa995e1 | 225 | TYPE_TARGET_TYPE (pid_type) = int_type; |
e9bb382b | 226 | TYPE_TARGET_STUB (pid_type) = 1; |
4aa995e1 PA |
227 | |
228 | /* __uid_t */ | |
e3aa49af MS |
229 | uid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF, |
230 | TYPE_LENGTH (uint_type), "__uid_t"); | |
4aa995e1 | 231 | TYPE_TARGET_TYPE (uid_type) = uint_type; |
e9bb382b | 232 | TYPE_TARGET_STUB (uid_type) = 1; |
4aa995e1 PA |
233 | |
234 | /* __clock_t */ | |
e3aa49af MS |
235 | clock_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF, |
236 | TYPE_LENGTH (long_type), "__clock_t"); | |
4aa995e1 | 237 | TYPE_TARGET_TYPE (clock_type) = long_type; |
e9bb382b | 238 | TYPE_TARGET_STUB (clock_type) = 1; |
4aa995e1 PA |
239 | |
240 | /* _sifields */ | |
e9bb382b | 241 | sifields_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION); |
4aa995e1 PA |
242 | |
243 | { | |
244 | const int si_max_size = 128; | |
245 | int si_pad_size; | |
246 | int size_of_int = gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT; | |
247 | ||
248 | /* _pad */ | |
249 | if (gdbarch_ptr_bit (gdbarch) == 64) | |
250 | si_pad_size = (si_max_size / size_of_int) - 4; | |
251 | else | |
252 | si_pad_size = (si_max_size / size_of_int) - 3; | |
253 | append_composite_type_field (sifields_type, "_pad", | |
254 | init_vector_type (int_type, si_pad_size)); | |
255 | } | |
256 | ||
257 | /* _kill */ | |
e9bb382b | 258 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
4aa995e1 PA |
259 | append_composite_type_field (type, "si_pid", pid_type); |
260 | append_composite_type_field (type, "si_uid", uid_type); | |
261 | append_composite_type_field (sifields_type, "_kill", type); | |
262 | ||
263 | /* _timer */ | |
e9bb382b | 264 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
4aa995e1 PA |
265 | append_composite_type_field (type, "si_tid", int_type); |
266 | append_composite_type_field (type, "si_overrun", int_type); | |
267 | append_composite_type_field (type, "si_sigval", sigval_type); | |
268 | append_composite_type_field (sifields_type, "_timer", type); | |
269 | ||
270 | /* _rt */ | |
e9bb382b | 271 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
4aa995e1 PA |
272 | append_composite_type_field (type, "si_pid", pid_type); |
273 | append_composite_type_field (type, "si_uid", uid_type); | |
274 | append_composite_type_field (type, "si_sigval", sigval_type); | |
275 | append_composite_type_field (sifields_type, "_rt", type); | |
276 | ||
277 | /* _sigchld */ | |
e9bb382b | 278 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
4aa995e1 PA |
279 | append_composite_type_field (type, "si_pid", pid_type); |
280 | append_composite_type_field (type, "si_uid", uid_type); | |
281 | append_composite_type_field (type, "si_status", int_type); | |
282 | append_composite_type_field (type, "si_utime", clock_type); | |
283 | append_composite_type_field (type, "si_stime", clock_type); | |
284 | append_composite_type_field (sifields_type, "_sigchld", type); | |
285 | ||
286 | /* _sigfault */ | |
e9bb382b | 287 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
4aa995e1 PA |
288 | append_composite_type_field (type, "si_addr", void_ptr_type); |
289 | append_composite_type_field (sifields_type, "_sigfault", type); | |
290 | ||
291 | /* _sigpoll */ | |
e9bb382b | 292 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
4aa995e1 PA |
293 | append_composite_type_field (type, "si_band", long_type); |
294 | append_composite_type_field (type, "si_fd", int_type); | |
295 | append_composite_type_field (sifields_type, "_sigpoll", type); | |
296 | ||
297 | /* struct siginfo */ | |
e9bb382b | 298 | siginfo_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
4aa995e1 PA |
299 | TYPE_NAME (siginfo_type) = xstrdup ("siginfo"); |
300 | append_composite_type_field (siginfo_type, "si_signo", int_type); | |
301 | append_composite_type_field (siginfo_type, "si_errno", int_type); | |
302 | append_composite_type_field (siginfo_type, "si_code", int_type); | |
303 | append_composite_type_field_aligned (siginfo_type, | |
304 | "_sifields", sifields_type, | |
305 | TYPE_LENGTH (long_type)); | |
306 | ||
06253dd3 JK |
307 | linux_gdbarch_data->siginfo_type = siginfo_type; |
308 | ||
4aa995e1 PA |
309 | return siginfo_type; |
310 | } | |
6b3ae818 | 311 | |
c01cbb3d YQ |
312 | /* Return true if the target is running on uClinux instead of normal |
313 | Linux kernel. */ | |
314 | ||
315 | int | |
316 | linux_is_uclinux (void) | |
6c95b8df | 317 | { |
6c95b8df | 318 | CORE_ADDR dummy; |
6c95b8df | 319 | |
c01cbb3d YQ |
320 | return (target_auxv_search (¤t_target, AT_NULL, &dummy) > 0 |
321 | && target_auxv_search (¤t_target, AT_PAGESZ, &dummy) == 0); | |
322 | } | |
6c95b8df | 323 | |
c01cbb3d YQ |
324 | static int |
325 | linux_has_shared_address_space (struct gdbarch *gdbarch) | |
326 | { | |
327 | return linux_is_uclinux (); | |
6c95b8df | 328 | } |
a5ee0f0c PA |
329 | |
330 | /* This is how we want PTIDs from core files to be printed. */ | |
331 | ||
332 | static char * | |
333 | linux_core_pid_to_str (struct gdbarch *gdbarch, ptid_t ptid) | |
334 | { | |
335 | static char buf[80]; | |
336 | ||
337 | if (ptid_get_lwp (ptid) != 0) | |
338 | { | |
339 | snprintf (buf, sizeof (buf), "LWP %ld", ptid_get_lwp (ptid)); | |
340 | return buf; | |
341 | } | |
342 | ||
343 | return normal_pid_to_str (ptid); | |
344 | } | |
345 | ||
3030c96e UW |
346 | /* Service function for corefiles and info proc. */ |
347 | ||
348 | static void | |
349 | read_mapping (const char *line, | |
350 | ULONGEST *addr, ULONGEST *endaddr, | |
351 | const char **permissions, size_t *permissions_len, | |
352 | ULONGEST *offset, | |
353 | const char **device, size_t *device_len, | |
354 | ULONGEST *inode, | |
355 | const char **filename) | |
356 | { | |
357 | const char *p = line; | |
358 | ||
359 | *addr = strtoulst (p, &p, 16); | |
360 | if (*p == '-') | |
361 | p++; | |
362 | *endaddr = strtoulst (p, &p, 16); | |
363 | ||
529480d0 | 364 | p = skip_spaces_const (p); |
3030c96e UW |
365 | *permissions = p; |
366 | while (*p && !isspace (*p)) | |
367 | p++; | |
368 | *permissions_len = p - *permissions; | |
369 | ||
370 | *offset = strtoulst (p, &p, 16); | |
371 | ||
529480d0 | 372 | p = skip_spaces_const (p); |
3030c96e UW |
373 | *device = p; |
374 | while (*p && !isspace (*p)) | |
375 | p++; | |
376 | *device_len = p - *device; | |
377 | ||
378 | *inode = strtoulst (p, &p, 10); | |
379 | ||
529480d0 | 380 | p = skip_spaces_const (p); |
3030c96e UW |
381 | *filename = p; |
382 | } | |
383 | ||
384 | /* Implement the "info proc" command. */ | |
385 | ||
386 | static void | |
7bc112c1 | 387 | linux_info_proc (struct gdbarch *gdbarch, const char *args, |
3030c96e UW |
388 | enum info_proc_what what) |
389 | { | |
390 | /* A long is used for pid instead of an int to avoid a loss of precision | |
391 | compiler warning from the output of strtoul. */ | |
392 | long pid; | |
393 | int cmdline_f = (what == IP_MINIMAL || what == IP_CMDLINE || what == IP_ALL); | |
394 | int cwd_f = (what == IP_MINIMAL || what == IP_CWD || what == IP_ALL); | |
395 | int exe_f = (what == IP_MINIMAL || what == IP_EXE || what == IP_ALL); | |
396 | int mappings_f = (what == IP_MAPPINGS || what == IP_ALL); | |
397 | int status_f = (what == IP_STATUS || what == IP_ALL); | |
398 | int stat_f = (what == IP_STAT || what == IP_ALL); | |
399 | char filename[100]; | |
001f13d8 | 400 | char *data; |
3030c96e UW |
401 | int target_errno; |
402 | ||
403 | if (args && isdigit (args[0])) | |
7bc112c1 TT |
404 | { |
405 | char *tem; | |
406 | ||
407 | pid = strtoul (args, &tem, 10); | |
408 | args = tem; | |
409 | } | |
3030c96e UW |
410 | else |
411 | { | |
412 | if (!target_has_execution) | |
413 | error (_("No current process: you must name one.")); | |
414 | if (current_inferior ()->fake_pid_p) | |
415 | error (_("Can't determine the current process's PID: you must name one.")); | |
416 | ||
417 | pid = current_inferior ()->pid; | |
418 | } | |
419 | ||
7bc112c1 | 420 | args = skip_spaces_const (args); |
3030c96e UW |
421 | if (args && args[0]) |
422 | error (_("Too many parameters: %s"), args); | |
423 | ||
424 | printf_filtered (_("process %ld\n"), pid); | |
425 | if (cmdline_f) | |
426 | { | |
427 | xsnprintf (filename, sizeof filename, "/proc/%ld/cmdline", pid); | |
428 | data = target_fileio_read_stralloc (filename); | |
429 | if (data) | |
430 | { | |
431 | struct cleanup *cleanup = make_cleanup (xfree, data); | |
432 | printf_filtered ("cmdline = '%s'\n", data); | |
433 | do_cleanups (cleanup); | |
434 | } | |
435 | else | |
436 | warning (_("unable to open /proc file '%s'"), filename); | |
437 | } | |
438 | if (cwd_f) | |
439 | { | |
440 | xsnprintf (filename, sizeof filename, "/proc/%ld/cwd", pid); | |
441 | data = target_fileio_readlink (filename, &target_errno); | |
442 | if (data) | |
443 | { | |
444 | struct cleanup *cleanup = make_cleanup (xfree, data); | |
445 | printf_filtered ("cwd = '%s'\n", data); | |
446 | do_cleanups (cleanup); | |
447 | } | |
448 | else | |
449 | warning (_("unable to read link '%s'"), filename); | |
450 | } | |
451 | if (exe_f) | |
452 | { | |
453 | xsnprintf (filename, sizeof filename, "/proc/%ld/exe", pid); | |
454 | data = target_fileio_readlink (filename, &target_errno); | |
455 | if (data) | |
456 | { | |
457 | struct cleanup *cleanup = make_cleanup (xfree, data); | |
458 | printf_filtered ("exe = '%s'\n", data); | |
459 | do_cleanups (cleanup); | |
460 | } | |
461 | else | |
462 | warning (_("unable to read link '%s'"), filename); | |
463 | } | |
464 | if (mappings_f) | |
465 | { | |
466 | xsnprintf (filename, sizeof filename, "/proc/%ld/maps", pid); | |
467 | data = target_fileio_read_stralloc (filename); | |
468 | if (data) | |
469 | { | |
470 | struct cleanup *cleanup = make_cleanup (xfree, data); | |
471 | char *line; | |
472 | ||
473 | printf_filtered (_("Mapped address spaces:\n\n")); | |
474 | if (gdbarch_addr_bit (gdbarch) == 32) | |
475 | { | |
476 | printf_filtered ("\t%10s %10s %10s %10s %s\n", | |
477 | "Start Addr", | |
478 | " End Addr", | |
479 | " Size", " Offset", "objfile"); | |
480 | } | |
481 | else | |
482 | { | |
483 | printf_filtered (" %18s %18s %10s %10s %s\n", | |
484 | "Start Addr", | |
485 | " End Addr", | |
486 | " Size", " Offset", "objfile"); | |
487 | } | |
488 | ||
489 | for (line = strtok (data, "\n"); line; line = strtok (NULL, "\n")) | |
490 | { | |
491 | ULONGEST addr, endaddr, offset, inode; | |
492 | const char *permissions, *device, *filename; | |
493 | size_t permissions_len, device_len; | |
494 | ||
495 | read_mapping (line, &addr, &endaddr, | |
496 | &permissions, &permissions_len, | |
497 | &offset, &device, &device_len, | |
498 | &inode, &filename); | |
499 | ||
500 | if (gdbarch_addr_bit (gdbarch) == 32) | |
501 | { | |
502 | printf_filtered ("\t%10s %10s %10s %10s %s\n", | |
503 | paddress (gdbarch, addr), | |
504 | paddress (gdbarch, endaddr), | |
505 | hex_string (endaddr - addr), | |
506 | hex_string (offset), | |
507 | *filename? filename : ""); | |
508 | } | |
509 | else | |
510 | { | |
511 | printf_filtered (" %18s %18s %10s %10s %s\n", | |
512 | paddress (gdbarch, addr), | |
513 | paddress (gdbarch, endaddr), | |
514 | hex_string (endaddr - addr), | |
515 | hex_string (offset), | |
516 | *filename? filename : ""); | |
517 | } | |
518 | } | |
519 | ||
520 | do_cleanups (cleanup); | |
521 | } | |
522 | else | |
523 | warning (_("unable to open /proc file '%s'"), filename); | |
524 | } | |
525 | if (status_f) | |
526 | { | |
527 | xsnprintf (filename, sizeof filename, "/proc/%ld/status", pid); | |
528 | data = target_fileio_read_stralloc (filename); | |
529 | if (data) | |
530 | { | |
531 | struct cleanup *cleanup = make_cleanup (xfree, data); | |
532 | puts_filtered (data); | |
533 | do_cleanups (cleanup); | |
534 | } | |
535 | else | |
536 | warning (_("unable to open /proc file '%s'"), filename); | |
537 | } | |
538 | if (stat_f) | |
539 | { | |
540 | xsnprintf (filename, sizeof filename, "/proc/%ld/stat", pid); | |
541 | data = target_fileio_read_stralloc (filename); | |
542 | if (data) | |
543 | { | |
544 | struct cleanup *cleanup = make_cleanup (xfree, data); | |
545 | const char *p = data; | |
3030c96e UW |
546 | |
547 | printf_filtered (_("Process: %s\n"), | |
548 | pulongest (strtoulst (p, &p, 10))); | |
549 | ||
529480d0 | 550 | p = skip_spaces_const (p); |
a71b5a38 | 551 | if (*p == '(') |
3030c96e | 552 | { |
184cd072 JK |
553 | /* ps command also relies on no trailing fields |
554 | ever contain ')'. */ | |
555 | const char *ep = strrchr (p, ')'); | |
a71b5a38 UW |
556 | if (ep != NULL) |
557 | { | |
558 | printf_filtered ("Exec file: %.*s\n", | |
559 | (int) (ep - p - 1), p + 1); | |
560 | p = ep + 1; | |
561 | } | |
3030c96e UW |
562 | } |
563 | ||
529480d0 | 564 | p = skip_spaces_const (p); |
3030c96e UW |
565 | if (*p) |
566 | printf_filtered (_("State: %c\n"), *p++); | |
567 | ||
568 | if (*p) | |
569 | printf_filtered (_("Parent process: %s\n"), | |
570 | pulongest (strtoulst (p, &p, 10))); | |
571 | if (*p) | |
572 | printf_filtered (_("Process group: %s\n"), | |
573 | pulongest (strtoulst (p, &p, 10))); | |
574 | if (*p) | |
575 | printf_filtered (_("Session id: %s\n"), | |
576 | pulongest (strtoulst (p, &p, 10))); | |
577 | if (*p) | |
578 | printf_filtered (_("TTY: %s\n"), | |
579 | pulongest (strtoulst (p, &p, 10))); | |
580 | if (*p) | |
581 | printf_filtered (_("TTY owner process group: %s\n"), | |
582 | pulongest (strtoulst (p, &p, 10))); | |
583 | ||
584 | if (*p) | |
585 | printf_filtered (_("Flags: %s\n"), | |
586 | hex_string (strtoulst (p, &p, 10))); | |
587 | if (*p) | |
588 | printf_filtered (_("Minor faults (no memory page): %s\n"), | |
589 | pulongest (strtoulst (p, &p, 10))); | |
590 | if (*p) | |
591 | printf_filtered (_("Minor faults, children: %s\n"), | |
592 | pulongest (strtoulst (p, &p, 10))); | |
593 | if (*p) | |
594 | printf_filtered (_("Major faults (memory page faults): %s\n"), | |
595 | pulongest (strtoulst (p, &p, 10))); | |
596 | if (*p) | |
597 | printf_filtered (_("Major faults, children: %s\n"), | |
598 | pulongest (strtoulst (p, &p, 10))); | |
599 | if (*p) | |
600 | printf_filtered (_("utime: %s\n"), | |
601 | pulongest (strtoulst (p, &p, 10))); | |
602 | if (*p) | |
603 | printf_filtered (_("stime: %s\n"), | |
604 | pulongest (strtoulst (p, &p, 10))); | |
605 | if (*p) | |
606 | printf_filtered (_("utime, children: %s\n"), | |
607 | pulongest (strtoulst (p, &p, 10))); | |
608 | if (*p) | |
609 | printf_filtered (_("stime, children: %s\n"), | |
610 | pulongest (strtoulst (p, &p, 10))); | |
611 | if (*p) | |
612 | printf_filtered (_("jiffies remaining in current " | |
613 | "time slice: %s\n"), | |
614 | pulongest (strtoulst (p, &p, 10))); | |
615 | if (*p) | |
616 | printf_filtered (_("'nice' value: %s\n"), | |
617 | pulongest (strtoulst (p, &p, 10))); | |
618 | if (*p) | |
619 | printf_filtered (_("jiffies until next timeout: %s\n"), | |
620 | pulongest (strtoulst (p, &p, 10))); | |
621 | if (*p) | |
622 | printf_filtered (_("jiffies until next SIGALRM: %s\n"), | |
623 | pulongest (strtoulst (p, &p, 10))); | |
624 | if (*p) | |
625 | printf_filtered (_("start time (jiffies since " | |
626 | "system boot): %s\n"), | |
627 | pulongest (strtoulst (p, &p, 10))); | |
628 | if (*p) | |
629 | printf_filtered (_("Virtual memory size: %s\n"), | |
630 | pulongest (strtoulst (p, &p, 10))); | |
631 | if (*p) | |
632 | printf_filtered (_("Resident set size: %s\n"), | |
633 | pulongest (strtoulst (p, &p, 10))); | |
634 | if (*p) | |
635 | printf_filtered (_("rlim: %s\n"), | |
636 | pulongest (strtoulst (p, &p, 10))); | |
637 | if (*p) | |
638 | printf_filtered (_("Start of text: %s\n"), | |
639 | hex_string (strtoulst (p, &p, 10))); | |
640 | if (*p) | |
641 | printf_filtered (_("End of text: %s\n"), | |
642 | hex_string (strtoulst (p, &p, 10))); | |
643 | if (*p) | |
644 | printf_filtered (_("Start of stack: %s\n"), | |
645 | hex_string (strtoulst (p, &p, 10))); | |
646 | #if 0 /* Don't know how architecture-dependent the rest is... | |
647 | Anyway the signal bitmap info is available from "status". */ | |
648 | if (*p) | |
649 | printf_filtered (_("Kernel stack pointer: %s\n"), | |
650 | hex_string (strtoulst (p, &p, 10))); | |
651 | if (*p) | |
652 | printf_filtered (_("Kernel instr pointer: %s\n"), | |
653 | hex_string (strtoulst (p, &p, 10))); | |
654 | if (*p) | |
655 | printf_filtered (_("Pending signals bitmap: %s\n"), | |
656 | hex_string (strtoulst (p, &p, 10))); | |
657 | if (*p) | |
658 | printf_filtered (_("Blocked signals bitmap: %s\n"), | |
659 | hex_string (strtoulst (p, &p, 10))); | |
660 | if (*p) | |
661 | printf_filtered (_("Ignored signals bitmap: %s\n"), | |
662 | hex_string (strtoulst (p, &p, 10))); | |
663 | if (*p) | |
664 | printf_filtered (_("Catched signals bitmap: %s\n"), | |
665 | hex_string (strtoulst (p, &p, 10))); | |
666 | if (*p) | |
667 | printf_filtered (_("wchan (system call): %s\n"), | |
668 | hex_string (strtoulst (p, &p, 10))); | |
669 | #endif | |
670 | do_cleanups (cleanup); | |
671 | } | |
672 | else | |
673 | warning (_("unable to open /proc file '%s'"), filename); | |
674 | } | |
675 | } | |
676 | ||
451b7c33 TT |
677 | /* Implement "info proc mappings" for a corefile. */ |
678 | ||
679 | static void | |
7bc112c1 | 680 | linux_core_info_proc_mappings (struct gdbarch *gdbarch, const char *args) |
451b7c33 TT |
681 | { |
682 | asection *section; | |
683 | ULONGEST count, page_size; | |
684 | unsigned char *descdata, *filenames, *descend, *contents; | |
685 | size_t note_size; | |
686 | unsigned int addr_size_bits, addr_size; | |
687 | struct cleanup *cleanup; | |
688 | struct gdbarch *core_gdbarch = gdbarch_from_bfd (core_bfd); | |
689 | /* We assume this for reading 64-bit core files. */ | |
690 | gdb_static_assert (sizeof (ULONGEST) >= 8); | |
691 | ||
692 | section = bfd_get_section_by_name (core_bfd, ".note.linuxcore.file"); | |
693 | if (section == NULL) | |
694 | { | |
695 | warning (_("unable to find mappings in core file")); | |
696 | return; | |
697 | } | |
698 | ||
699 | addr_size_bits = gdbarch_addr_bit (core_gdbarch); | |
700 | addr_size = addr_size_bits / 8; | |
701 | note_size = bfd_get_section_size (section); | |
702 | ||
703 | if (note_size < 2 * addr_size) | |
704 | error (_("malformed core note - too short for header")); | |
705 | ||
706 | contents = xmalloc (note_size); | |
707 | cleanup = make_cleanup (xfree, contents); | |
708 | if (!bfd_get_section_contents (core_bfd, section, contents, 0, note_size)) | |
709 | error (_("could not get core note contents")); | |
710 | ||
711 | descdata = contents; | |
712 | descend = descdata + note_size; | |
713 | ||
714 | if (descdata[note_size - 1] != '\0') | |
715 | error (_("malformed note - does not end with \\0")); | |
716 | ||
717 | count = bfd_get (addr_size_bits, core_bfd, descdata); | |
718 | descdata += addr_size; | |
719 | ||
720 | page_size = bfd_get (addr_size_bits, core_bfd, descdata); | |
721 | descdata += addr_size; | |
722 | ||
723 | if (note_size < 2 * addr_size + count * 3 * addr_size) | |
724 | error (_("malformed note - too short for supplied file count")); | |
725 | ||
726 | printf_filtered (_("Mapped address spaces:\n\n")); | |
727 | if (gdbarch_addr_bit (gdbarch) == 32) | |
728 | { | |
729 | printf_filtered ("\t%10s %10s %10s %10s %s\n", | |
730 | "Start Addr", | |
731 | " End Addr", | |
732 | " Size", " Offset", "objfile"); | |
733 | } | |
734 | else | |
735 | { | |
736 | printf_filtered (" %18s %18s %10s %10s %s\n", | |
737 | "Start Addr", | |
738 | " End Addr", | |
739 | " Size", " Offset", "objfile"); | |
740 | } | |
741 | ||
742 | filenames = descdata + count * 3 * addr_size; | |
743 | while (--count > 0) | |
744 | { | |
745 | ULONGEST start, end, file_ofs; | |
746 | ||
747 | if (filenames == descend) | |
748 | error (_("malformed note - filenames end too early")); | |
749 | ||
750 | start = bfd_get (addr_size_bits, core_bfd, descdata); | |
751 | descdata += addr_size; | |
752 | end = bfd_get (addr_size_bits, core_bfd, descdata); | |
753 | descdata += addr_size; | |
754 | file_ofs = bfd_get (addr_size_bits, core_bfd, descdata); | |
755 | descdata += addr_size; | |
756 | ||
757 | file_ofs *= page_size; | |
758 | ||
759 | if (gdbarch_addr_bit (gdbarch) == 32) | |
760 | printf_filtered ("\t%10s %10s %10s %10s %s\n", | |
761 | paddress (gdbarch, start), | |
762 | paddress (gdbarch, end), | |
763 | hex_string (end - start), | |
764 | hex_string (file_ofs), | |
765 | filenames); | |
766 | else | |
767 | printf_filtered (" %18s %18s %10s %10s %s\n", | |
768 | paddress (gdbarch, start), | |
769 | paddress (gdbarch, end), | |
770 | hex_string (end - start), | |
771 | hex_string (file_ofs), | |
772 | filenames); | |
773 | ||
774 | filenames += 1 + strlen ((char *) filenames); | |
775 | } | |
776 | ||
777 | do_cleanups (cleanup); | |
778 | } | |
779 | ||
780 | /* Implement "info proc" for a corefile. */ | |
781 | ||
782 | static void | |
7bc112c1 | 783 | linux_core_info_proc (struct gdbarch *gdbarch, const char *args, |
451b7c33 TT |
784 | enum info_proc_what what) |
785 | { | |
786 | int exe_f = (what == IP_MINIMAL || what == IP_EXE || what == IP_ALL); | |
787 | int mappings_f = (what == IP_MAPPINGS || what == IP_ALL); | |
788 | ||
789 | if (exe_f) | |
790 | { | |
791 | const char *exe; | |
792 | ||
793 | exe = bfd_core_file_failing_command (core_bfd); | |
794 | if (exe != NULL) | |
795 | printf_filtered ("exe = '%s'\n", exe); | |
796 | else | |
797 | warning (_("unable to find command name in core file")); | |
798 | } | |
799 | ||
800 | if (mappings_f) | |
801 | linux_core_info_proc_mappings (gdbarch, args); | |
802 | ||
803 | if (!exe_f && !mappings_f) | |
804 | error (_("unable to handle request")); | |
805 | } | |
806 | ||
807 | typedef int linux_find_memory_region_ftype (ULONGEST vaddr, ULONGEST size, | |
808 | ULONGEST offset, ULONGEST inode, | |
809 | int read, int write, | |
810 | int exec, int modified, | |
811 | const char *filename, | |
812 | void *data); | |
813 | ||
35c2fab7 UW |
814 | /* List memory regions in the inferior for a corefile. */ |
815 | ||
816 | static int | |
451b7c33 TT |
817 | linux_find_memory_regions_full (struct gdbarch *gdbarch, |
818 | linux_find_memory_region_ftype *func, | |
819 | void *obfd) | |
35c2fab7 | 820 | { |
d1794952 | 821 | char mapsfilename[100]; |
001f13d8 | 822 | char *data; |
35c2fab7 UW |
823 | |
824 | /* We need to know the real target PID to access /proc. */ | |
825 | if (current_inferior ()->fake_pid_p) | |
826 | return 1; | |
827 | ||
d1794952 | 828 | xsnprintf (mapsfilename, sizeof mapsfilename, |
4f69f4c2 | 829 | "/proc/%d/smaps", current_inferior ()->pid); |
d1794952 | 830 | data = target_fileio_read_stralloc (mapsfilename); |
4f69f4c2 JK |
831 | if (data == NULL) |
832 | { | |
833 | /* Older Linux kernels did not support /proc/PID/smaps. */ | |
d1794952 | 834 | xsnprintf (mapsfilename, sizeof mapsfilename, |
4f69f4c2 | 835 | "/proc/%d/maps", current_inferior ()->pid); |
d1794952 | 836 | data = target_fileio_read_stralloc (mapsfilename); |
4f69f4c2 | 837 | } |
35c2fab7 UW |
838 | if (data) |
839 | { | |
840 | struct cleanup *cleanup = make_cleanup (xfree, data); | |
841 | char *line; | |
842 | ||
4f69f4c2 JK |
843 | line = strtok (data, "\n"); |
844 | while (line) | |
35c2fab7 UW |
845 | { |
846 | ULONGEST addr, endaddr, offset, inode; | |
847 | const char *permissions, *device, *filename; | |
848 | size_t permissions_len, device_len; | |
849 | int read, write, exec; | |
4f69f4c2 | 850 | int modified = 0, has_anonymous = 0; |
35c2fab7 UW |
851 | |
852 | read_mapping (line, &addr, &endaddr, &permissions, &permissions_len, | |
853 | &offset, &device, &device_len, &inode, &filename); | |
854 | ||
855 | /* Decode permissions. */ | |
856 | read = (memchr (permissions, 'r', permissions_len) != 0); | |
857 | write = (memchr (permissions, 'w', permissions_len) != 0); | |
858 | exec = (memchr (permissions, 'x', permissions_len) != 0); | |
859 | ||
4f69f4c2 JK |
860 | /* Try to detect if region was modified by parsing smaps counters. */ |
861 | for (line = strtok (NULL, "\n"); | |
862 | line && line[0] >= 'A' && line[0] <= 'Z'; | |
863 | line = strtok (NULL, "\n")) | |
864 | { | |
865 | char keyword[64 + 1]; | |
4f69f4c2 | 866 | |
9ead1b84 | 867 | if (sscanf (line, "%64s", keyword) != 1) |
4f69f4c2 | 868 | { |
d1794952 | 869 | warning (_("Error parsing {s,}maps file '%s'"), mapsfilename); |
4f69f4c2 JK |
870 | break; |
871 | } | |
872 | if (strcmp (keyword, "Anonymous:") == 0) | |
873 | has_anonymous = 1; | |
9ead1b84 JK |
874 | if (strcmp (keyword, "Shared_Dirty:") == 0 |
875 | || strcmp (keyword, "Private_Dirty:") == 0 | |
876 | || strcmp (keyword, "Swap:") == 0 | |
877 | || strcmp (keyword, "Anonymous:") == 0) | |
878 | { | |
879 | unsigned long number; | |
880 | ||
881 | if (sscanf (line, "%*s%lu", &number) != 1) | |
882 | { | |
883 | warning (_("Error parsing {s,}maps file '%s' number"), | |
884 | mapsfilename); | |
885 | break; | |
886 | } | |
887 | if (number != 0) | |
888 | modified = 1; | |
889 | } | |
4f69f4c2 JK |
890 | } |
891 | ||
892 | /* Older Linux kernels did not support the "Anonymous:" counter. | |
893 | If it is missing, we can't be sure - dump all the pages. */ | |
894 | if (!has_anonymous) | |
895 | modified = 1; | |
896 | ||
35c2fab7 | 897 | /* Invoke the callback function to create the corefile segment. */ |
451b7c33 TT |
898 | func (addr, endaddr - addr, offset, inode, |
899 | read, write, exec, modified, filename, obfd); | |
35c2fab7 UW |
900 | } |
901 | ||
902 | do_cleanups (cleanup); | |
903 | return 0; | |
904 | } | |
905 | ||
906 | return 1; | |
907 | } | |
908 | ||
451b7c33 TT |
909 | /* A structure for passing information through |
910 | linux_find_memory_regions_full. */ | |
911 | ||
912 | struct linux_find_memory_regions_data | |
913 | { | |
914 | /* The original callback. */ | |
915 | ||
916 | find_memory_region_ftype func; | |
917 | ||
918 | /* The original datum. */ | |
919 | ||
920 | void *obfd; | |
921 | }; | |
922 | ||
923 | /* A callback for linux_find_memory_regions that converts between the | |
924 | "full"-style callback and find_memory_region_ftype. */ | |
925 | ||
926 | static int | |
927 | linux_find_memory_regions_thunk (ULONGEST vaddr, ULONGEST size, | |
928 | ULONGEST offset, ULONGEST inode, | |
929 | int read, int write, int exec, int modified, | |
930 | const char *filename, void *arg) | |
931 | { | |
932 | struct linux_find_memory_regions_data *data = arg; | |
933 | ||
934 | return data->func (vaddr, size, read, write, exec, modified, data->obfd); | |
935 | } | |
936 | ||
937 | /* A variant of linux_find_memory_regions_full that is suitable as the | |
938 | gdbarch find_memory_regions method. */ | |
939 | ||
940 | static int | |
941 | linux_find_memory_regions (struct gdbarch *gdbarch, | |
942 | find_memory_region_ftype func, void *obfd) | |
943 | { | |
944 | struct linux_find_memory_regions_data data; | |
945 | ||
946 | data.func = func; | |
947 | data.obfd = obfd; | |
948 | ||
949 | return linux_find_memory_regions_full (gdbarch, | |
950 | linux_find_memory_regions_thunk, | |
951 | &data); | |
952 | } | |
953 | ||
6432734d UW |
954 | /* Determine which signal stopped execution. */ |
955 | ||
956 | static int | |
957 | find_signalled_thread (struct thread_info *info, void *data) | |
958 | { | |
a493e3e2 | 959 | if (info->suspend.stop_signal != GDB_SIGNAL_0 |
6432734d UW |
960 | && ptid_get_pid (info->ptid) == ptid_get_pid (inferior_ptid)) |
961 | return 1; | |
962 | ||
963 | return 0; | |
964 | } | |
965 | ||
2ea28649 | 966 | static enum gdb_signal |
6432734d UW |
967 | find_stop_signal (void) |
968 | { | |
969 | struct thread_info *info = | |
970 | iterate_over_threads (find_signalled_thread, NULL); | |
971 | ||
972 | if (info) | |
973 | return info->suspend.stop_signal; | |
974 | else | |
a493e3e2 | 975 | return GDB_SIGNAL_0; |
6432734d UW |
976 | } |
977 | ||
978 | /* Generate corefile notes for SPU contexts. */ | |
979 | ||
980 | static char * | |
981 | linux_spu_make_corefile_notes (bfd *obfd, char *note_data, int *note_size) | |
982 | { | |
983 | static const char *spu_files[] = | |
984 | { | |
985 | "object-id", | |
986 | "mem", | |
987 | "regs", | |
988 | "fpcr", | |
989 | "lslr", | |
990 | "decr", | |
991 | "decr_status", | |
992 | "signal1", | |
993 | "signal1_type", | |
994 | "signal2", | |
995 | "signal2_type", | |
996 | "event_mask", | |
997 | "event_status", | |
998 | "mbox_info", | |
999 | "ibox_info", | |
1000 | "wbox_info", | |
1001 | "dma_info", | |
1002 | "proxydma_info", | |
1003 | }; | |
1004 | ||
f5656ead | 1005 | enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch ()); |
6432734d UW |
1006 | gdb_byte *spu_ids; |
1007 | LONGEST i, j, size; | |
1008 | ||
1009 | /* Determine list of SPU ids. */ | |
1010 | size = target_read_alloc (¤t_target, TARGET_OBJECT_SPU, | |
1011 | NULL, &spu_ids); | |
1012 | ||
1013 | /* Generate corefile notes for each SPU file. */ | |
1014 | for (i = 0; i < size; i += 4) | |
1015 | { | |
1016 | int fd = extract_unsigned_integer (spu_ids + i, 4, byte_order); | |
1017 | ||
1018 | for (j = 0; j < sizeof (spu_files) / sizeof (spu_files[0]); j++) | |
1019 | { | |
1020 | char annex[32], note_name[32]; | |
1021 | gdb_byte *spu_data; | |
1022 | LONGEST spu_len; | |
1023 | ||
1024 | xsnprintf (annex, sizeof annex, "%d/%s", fd, spu_files[j]); | |
1025 | spu_len = target_read_alloc (¤t_target, TARGET_OBJECT_SPU, | |
1026 | annex, &spu_data); | |
1027 | if (spu_len > 0) | |
1028 | { | |
1029 | xsnprintf (note_name, sizeof note_name, "SPU/%s", annex); | |
1030 | note_data = elfcore_write_note (obfd, note_data, note_size, | |
1031 | note_name, NT_SPU, | |
1032 | spu_data, spu_len); | |
1033 | xfree (spu_data); | |
1034 | ||
1035 | if (!note_data) | |
1036 | { | |
1037 | xfree (spu_ids); | |
1038 | return NULL; | |
1039 | } | |
1040 | } | |
1041 | } | |
1042 | } | |
1043 | ||
1044 | if (size > 0) | |
1045 | xfree (spu_ids); | |
1046 | ||
1047 | return note_data; | |
1048 | } | |
1049 | ||
451b7c33 TT |
1050 | /* This is used to pass information from |
1051 | linux_make_mappings_corefile_notes through | |
1052 | linux_find_memory_regions_full. */ | |
1053 | ||
1054 | struct linux_make_mappings_data | |
1055 | { | |
1056 | /* Number of files mapped. */ | |
1057 | ULONGEST file_count; | |
1058 | ||
1059 | /* The obstack for the main part of the data. */ | |
1060 | struct obstack *data_obstack; | |
1061 | ||
1062 | /* The filename obstack. */ | |
1063 | struct obstack *filename_obstack; | |
1064 | ||
1065 | /* The architecture's "long" type. */ | |
1066 | struct type *long_type; | |
1067 | }; | |
1068 | ||
1069 | static linux_find_memory_region_ftype linux_make_mappings_callback; | |
1070 | ||
1071 | /* A callback for linux_find_memory_regions_full that updates the | |
1072 | mappings data for linux_make_mappings_corefile_notes. */ | |
1073 | ||
1074 | static int | |
1075 | linux_make_mappings_callback (ULONGEST vaddr, ULONGEST size, | |
1076 | ULONGEST offset, ULONGEST inode, | |
1077 | int read, int write, int exec, int modified, | |
1078 | const char *filename, void *data) | |
1079 | { | |
1080 | struct linux_make_mappings_data *map_data = data; | |
1081 | gdb_byte buf[sizeof (ULONGEST)]; | |
1082 | ||
1083 | if (*filename == '\0' || inode == 0) | |
1084 | return 0; | |
1085 | ||
1086 | ++map_data->file_count; | |
1087 | ||
1088 | pack_long (buf, map_data->long_type, vaddr); | |
1089 | obstack_grow (map_data->data_obstack, buf, TYPE_LENGTH (map_data->long_type)); | |
1090 | pack_long (buf, map_data->long_type, vaddr + size); | |
1091 | obstack_grow (map_data->data_obstack, buf, TYPE_LENGTH (map_data->long_type)); | |
1092 | pack_long (buf, map_data->long_type, offset); | |
1093 | obstack_grow (map_data->data_obstack, buf, TYPE_LENGTH (map_data->long_type)); | |
1094 | ||
1095 | obstack_grow_str0 (map_data->filename_obstack, filename); | |
1096 | ||
1097 | return 0; | |
1098 | } | |
1099 | ||
1100 | /* Write the file mapping data to the core file, if possible. OBFD is | |
1101 | the output BFD. NOTE_DATA is the current note data, and NOTE_SIZE | |
1102 | is a pointer to the note size. Returns the new NOTE_DATA and | |
1103 | updates NOTE_SIZE. */ | |
1104 | ||
1105 | static char * | |
1106 | linux_make_mappings_corefile_notes (struct gdbarch *gdbarch, bfd *obfd, | |
1107 | char *note_data, int *note_size) | |
1108 | { | |
1109 | struct cleanup *cleanup; | |
1110 | struct obstack data_obstack, filename_obstack; | |
1111 | struct linux_make_mappings_data mapping_data; | |
1112 | struct type *long_type | |
1113 | = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch), 0, "long"); | |
1114 | gdb_byte buf[sizeof (ULONGEST)]; | |
1115 | ||
1116 | obstack_init (&data_obstack); | |
1117 | cleanup = make_cleanup_obstack_free (&data_obstack); | |
1118 | obstack_init (&filename_obstack); | |
1119 | make_cleanup_obstack_free (&filename_obstack); | |
1120 | ||
1121 | mapping_data.file_count = 0; | |
1122 | mapping_data.data_obstack = &data_obstack; | |
1123 | mapping_data.filename_obstack = &filename_obstack; | |
1124 | mapping_data.long_type = long_type; | |
1125 | ||
1126 | /* Reserve space for the count. */ | |
1127 | obstack_blank (&data_obstack, TYPE_LENGTH (long_type)); | |
1128 | /* We always write the page size as 1 since we have no good way to | |
1129 | determine the correct value. */ | |
1130 | pack_long (buf, long_type, 1); | |
1131 | obstack_grow (&data_obstack, buf, TYPE_LENGTH (long_type)); | |
1132 | ||
1133 | linux_find_memory_regions_full (gdbarch, linux_make_mappings_callback, | |
1134 | &mapping_data); | |
1135 | ||
1136 | if (mapping_data.file_count != 0) | |
1137 | { | |
1138 | /* Write the count to the obstack. */ | |
51a5cd90 PA |
1139 | pack_long ((gdb_byte *) obstack_base (&data_obstack), |
1140 | long_type, mapping_data.file_count); | |
451b7c33 TT |
1141 | |
1142 | /* Copy the filenames to the data obstack. */ | |
1143 | obstack_grow (&data_obstack, obstack_base (&filename_obstack), | |
1144 | obstack_object_size (&filename_obstack)); | |
1145 | ||
1146 | note_data = elfcore_write_note (obfd, note_data, note_size, | |
1147 | "CORE", NT_FILE, | |
1148 | obstack_base (&data_obstack), | |
1149 | obstack_object_size (&data_obstack)); | |
1150 | } | |
1151 | ||
1152 | do_cleanups (cleanup); | |
1153 | return note_data; | |
1154 | } | |
1155 | ||
5aa82d05 AA |
1156 | /* Structure for passing information from |
1157 | linux_collect_thread_registers via an iterator to | |
1158 | linux_collect_regset_section_cb. */ | |
1159 | ||
1160 | struct linux_collect_regset_section_cb_data | |
1161 | { | |
1162 | struct gdbarch *gdbarch; | |
1163 | const struct regcache *regcache; | |
1164 | bfd *obfd; | |
1165 | char *note_data; | |
1166 | int *note_size; | |
1167 | unsigned long lwp; | |
1168 | enum gdb_signal stop_signal; | |
1169 | int abort_iteration; | |
1170 | }; | |
1171 | ||
1172 | /* Callback for iterate_over_regset_sections that records a single | |
1173 | regset in the corefile note section. */ | |
1174 | ||
1175 | static void | |
1176 | linux_collect_regset_section_cb (const char *sect_name, int size, | |
8f0435f7 | 1177 | const struct regset *regset, |
5aa82d05 AA |
1178 | const char *human_name, void *cb_data) |
1179 | { | |
5aa82d05 AA |
1180 | char *buf; |
1181 | struct linux_collect_regset_section_cb_data *data = cb_data; | |
1182 | ||
1183 | if (data->abort_iteration) | |
1184 | return; | |
1185 | ||
5aa82d05 AA |
1186 | gdb_assert (regset && regset->collect_regset); |
1187 | ||
1188 | buf = xmalloc (size); | |
1189 | regset->collect_regset (regset, data->regcache, -1, buf, size); | |
1190 | ||
1191 | /* PRSTATUS still needs to be treated specially. */ | |
1192 | if (strcmp (sect_name, ".reg") == 0) | |
1193 | data->note_data = (char *) elfcore_write_prstatus | |
1194 | (data->obfd, data->note_data, data->note_size, data->lwp, | |
1195 | gdb_signal_to_host (data->stop_signal), buf); | |
1196 | else | |
1197 | data->note_data = (char *) elfcore_write_register_note | |
1198 | (data->obfd, data->note_data, data->note_size, | |
1199 | sect_name, buf, size); | |
1200 | xfree (buf); | |
1201 | ||
1202 | if (data->note_data == NULL) | |
1203 | data->abort_iteration = 1; | |
1204 | } | |
1205 | ||
6432734d UW |
1206 | /* Records the thread's register state for the corefile note |
1207 | section. */ | |
1208 | ||
1209 | static char * | |
1210 | linux_collect_thread_registers (const struct regcache *regcache, | |
1211 | ptid_t ptid, bfd *obfd, | |
1212 | char *note_data, int *note_size, | |
2ea28649 | 1213 | enum gdb_signal stop_signal) |
6432734d UW |
1214 | { |
1215 | struct gdbarch *gdbarch = get_regcache_arch (regcache); | |
5aa82d05 | 1216 | struct linux_collect_regset_section_cb_data data; |
6432734d | 1217 | |
5aa82d05 AA |
1218 | data.gdbarch = gdbarch; |
1219 | data.regcache = regcache; | |
1220 | data.obfd = obfd; | |
1221 | data.note_data = note_data; | |
1222 | data.note_size = note_size; | |
1223 | data.stop_signal = stop_signal; | |
1224 | data.abort_iteration = 0; | |
6432734d UW |
1225 | |
1226 | /* For remote targets the LWP may not be available, so use the TID. */ | |
5aa82d05 AA |
1227 | data.lwp = ptid_get_lwp (ptid); |
1228 | if (!data.lwp) | |
1229 | data.lwp = ptid_get_tid (ptid); | |
1230 | ||
1231 | gdbarch_iterate_over_regset_sections (gdbarch, | |
1232 | linux_collect_regset_section_cb, | |
1233 | &data, regcache); | |
1234 | return data.note_data; | |
6432734d UW |
1235 | } |
1236 | ||
9015683b TT |
1237 | /* Fetch the siginfo data for the current thread, if it exists. If |
1238 | there is no data, or we could not read it, return NULL. Otherwise, | |
1239 | return a newly malloc'd buffer holding the data and fill in *SIZE | |
1240 | with the size of the data. The caller is responsible for freeing | |
1241 | the data. */ | |
1242 | ||
1243 | static gdb_byte * | |
1244 | linux_get_siginfo_data (struct gdbarch *gdbarch, LONGEST *size) | |
1245 | { | |
1246 | struct type *siginfo_type; | |
1247 | gdb_byte *buf; | |
1248 | LONGEST bytes_read; | |
1249 | struct cleanup *cleanups; | |
1250 | ||
1251 | if (!gdbarch_get_siginfo_type_p (gdbarch)) | |
1252 | return NULL; | |
1253 | ||
1254 | siginfo_type = gdbarch_get_siginfo_type (gdbarch); | |
1255 | ||
1256 | buf = xmalloc (TYPE_LENGTH (siginfo_type)); | |
1257 | cleanups = make_cleanup (xfree, buf); | |
1258 | ||
1259 | bytes_read = target_read (¤t_target, TARGET_OBJECT_SIGNAL_INFO, NULL, | |
1260 | buf, 0, TYPE_LENGTH (siginfo_type)); | |
1261 | if (bytes_read == TYPE_LENGTH (siginfo_type)) | |
1262 | { | |
1263 | discard_cleanups (cleanups); | |
1264 | *size = bytes_read; | |
1265 | } | |
1266 | else | |
1267 | { | |
1268 | do_cleanups (cleanups); | |
1269 | buf = NULL; | |
1270 | } | |
1271 | ||
1272 | return buf; | |
1273 | } | |
1274 | ||
6432734d UW |
1275 | struct linux_corefile_thread_data |
1276 | { | |
1277 | struct gdbarch *gdbarch; | |
1278 | int pid; | |
1279 | bfd *obfd; | |
1280 | char *note_data; | |
1281 | int *note_size; | |
2ea28649 | 1282 | enum gdb_signal stop_signal; |
6432734d UW |
1283 | }; |
1284 | ||
1285 | /* Called by gdbthread.c once per thread. Records the thread's | |
1286 | register state for the corefile note section. */ | |
1287 | ||
1288 | static int | |
1289 | linux_corefile_thread_callback (struct thread_info *info, void *data) | |
1290 | { | |
1291 | struct linux_corefile_thread_data *args = data; | |
1292 | ||
22fd09ae JK |
1293 | /* It can be current thread |
1294 | which cannot be removed by update_thread_list. */ | |
1295 | if (info->state == THREAD_EXITED) | |
1296 | return 0; | |
1297 | ||
6432734d UW |
1298 | if (ptid_get_pid (info->ptid) == args->pid) |
1299 | { | |
1300 | struct cleanup *old_chain; | |
1301 | struct regcache *regcache; | |
9015683b | 1302 | gdb_byte *siginfo_data; |
e17aaa33 | 1303 | LONGEST siginfo_size = 0; |
9015683b | 1304 | |
6432734d UW |
1305 | regcache = get_thread_arch_regcache (info->ptid, args->gdbarch); |
1306 | ||
1307 | old_chain = save_inferior_ptid (); | |
1308 | inferior_ptid = info->ptid; | |
1309 | target_fetch_registers (regcache, -1); | |
9015683b | 1310 | siginfo_data = linux_get_siginfo_data (args->gdbarch, &siginfo_size); |
6432734d UW |
1311 | do_cleanups (old_chain); |
1312 | ||
9015683b TT |
1313 | old_chain = make_cleanup (xfree, siginfo_data); |
1314 | ||
f968fe80 AA |
1315 | args->note_data = linux_collect_thread_registers |
1316 | (regcache, info->ptid, args->obfd, args->note_data, | |
1317 | args->note_size, args->stop_signal); | |
9015683b | 1318 | |
bbe769cc MR |
1319 | /* Don't return anything if we got no register information above, |
1320 | such a core file is useless. */ | |
1321 | if (args->note_data != NULL) | |
1322 | if (siginfo_data != NULL) | |
9015683b TT |
1323 | args->note_data = elfcore_write_note (args->obfd, |
1324 | args->note_data, | |
1325 | args->note_size, | |
1326 | "CORE", NT_SIGINFO, | |
1327 | siginfo_data, siginfo_size); | |
9015683b TT |
1328 | |
1329 | do_cleanups (old_chain); | |
6432734d UW |
1330 | } |
1331 | ||
1332 | return !args->note_data; | |
1333 | } | |
1334 | ||
b3ac9c77 SDJ |
1335 | /* Fill the PRPSINFO structure with information about the process being |
1336 | debugged. Returns 1 in case of success, 0 for failures. Please note that | |
1337 | even if the structure cannot be entirely filled (e.g., GDB was unable to | |
1338 | gather information about the process UID/GID), this function will still | |
1339 | return 1 since some information was already recorded. It will only return | |
1340 | 0 iff nothing can be gathered. */ | |
1341 | ||
1342 | static int | |
1343 | linux_fill_prpsinfo (struct elf_internal_linux_prpsinfo *p) | |
1344 | { | |
1345 | /* The filename which we will use to obtain some info about the process. | |
1346 | We will basically use this to store the `/proc/PID/FILENAME' file. */ | |
1347 | char filename[100]; | |
1348 | /* The full name of the program which generated the corefile. */ | |
1349 | char *fname; | |
1350 | /* The basename of the executable. */ | |
1351 | const char *basename; | |
1352 | /* The arguments of the program. */ | |
1353 | char *psargs; | |
1354 | char *infargs; | |
1355 | /* The contents of `/proc/PID/stat' and `/proc/PID/status' files. */ | |
1356 | char *proc_stat, *proc_status; | |
1357 | /* Temporary buffer. */ | |
1358 | char *tmpstr; | |
1359 | /* The valid states of a process, according to the Linux kernel. */ | |
1360 | const char valid_states[] = "RSDTZW"; | |
1361 | /* The program state. */ | |
1362 | const char *prog_state; | |
1363 | /* The state of the process. */ | |
1364 | char pr_sname; | |
1365 | /* The PID of the program which generated the corefile. */ | |
1366 | pid_t pid; | |
1367 | /* Process flags. */ | |
1368 | unsigned int pr_flag; | |
1369 | /* Process nice value. */ | |
1370 | long pr_nice; | |
1371 | /* The number of fields read by `sscanf'. */ | |
1372 | int n_fields = 0; | |
1373 | /* Cleanups. */ | |
1374 | struct cleanup *c; | |
1375 | int i; | |
1376 | ||
1377 | gdb_assert (p != NULL); | |
1378 | ||
1379 | /* Obtaining PID and filename. */ | |
1380 | pid = ptid_get_pid (inferior_ptid); | |
1381 | xsnprintf (filename, sizeof (filename), "/proc/%d/cmdline", (int) pid); | |
1382 | fname = target_fileio_read_stralloc (filename); | |
1383 | ||
1384 | if (fname == NULL || *fname == '\0') | |
1385 | { | |
1386 | /* No program name was read, so we won't be able to retrieve more | |
1387 | information about the process. */ | |
1388 | xfree (fname); | |
1389 | return 0; | |
1390 | } | |
1391 | ||
1392 | c = make_cleanup (xfree, fname); | |
1393 | memset (p, 0, sizeof (*p)); | |
1394 | ||
1395 | /* Defining the PID. */ | |
1396 | p->pr_pid = pid; | |
1397 | ||
1398 | /* Copying the program name. Only the basename matters. */ | |
1399 | basename = lbasename (fname); | |
1400 | strncpy (p->pr_fname, basename, sizeof (p->pr_fname)); | |
1401 | p->pr_fname[sizeof (p->pr_fname) - 1] = '\0'; | |
1402 | ||
1403 | infargs = get_inferior_args (); | |
1404 | ||
1405 | psargs = xstrdup (fname); | |
1406 | if (infargs != NULL) | |
1407 | psargs = reconcat (psargs, psargs, " ", infargs, NULL); | |
1408 | ||
1409 | make_cleanup (xfree, psargs); | |
1410 | ||
1411 | strncpy (p->pr_psargs, psargs, sizeof (p->pr_psargs)); | |
1412 | p->pr_psargs[sizeof (p->pr_psargs) - 1] = '\0'; | |
1413 | ||
1414 | xsnprintf (filename, sizeof (filename), "/proc/%d/stat", (int) pid); | |
1415 | proc_stat = target_fileio_read_stralloc (filename); | |
1416 | make_cleanup (xfree, proc_stat); | |
1417 | ||
1418 | if (proc_stat == NULL || *proc_stat == '\0') | |
1419 | { | |
1420 | /* Despite being unable to read more information about the | |
1421 | process, we return 1 here because at least we have its | |
1422 | command line, PID and arguments. */ | |
1423 | do_cleanups (c); | |
1424 | return 1; | |
1425 | } | |
1426 | ||
1427 | /* Ok, we have the stats. It's time to do a little parsing of the | |
1428 | contents of the buffer, so that we end up reading what we want. | |
1429 | ||
1430 | The following parsing mechanism is strongly based on the | |
1431 | information generated by the `fs/proc/array.c' file, present in | |
1432 | the Linux kernel tree. More details about how the information is | |
1433 | displayed can be obtained by seeing the manpage of proc(5), | |
1434 | specifically under the entry of `/proc/[pid]/stat'. */ | |
1435 | ||
1436 | /* Getting rid of the PID, since we already have it. */ | |
1437 | while (isdigit (*proc_stat)) | |
1438 | ++proc_stat; | |
1439 | ||
1440 | proc_stat = skip_spaces (proc_stat); | |
1441 | ||
184cd072 JK |
1442 | /* ps command also relies on no trailing fields ever contain ')'. */ |
1443 | proc_stat = strrchr (proc_stat, ')'); | |
1444 | if (proc_stat == NULL) | |
1445 | { | |
1446 | do_cleanups (c); | |
1447 | return 1; | |
1448 | } | |
1449 | proc_stat++; | |
b3ac9c77 SDJ |
1450 | |
1451 | proc_stat = skip_spaces (proc_stat); | |
1452 | ||
1453 | n_fields = sscanf (proc_stat, | |
1454 | "%c" /* Process state. */ | |
1455 | "%d%d%d" /* Parent PID, group ID, session ID. */ | |
1456 | "%*d%*d" /* tty_nr, tpgid (not used). */ | |
1457 | "%u" /* Flags. */ | |
1458 | "%*s%*s%*s%*s" /* minflt, cminflt, majflt, | |
1459 | cmajflt (not used). */ | |
1460 | "%*s%*s%*s%*s" /* utime, stime, cutime, | |
1461 | cstime (not used). */ | |
1462 | "%*s" /* Priority (not used). */ | |
1463 | "%ld", /* Nice. */ | |
1464 | &pr_sname, | |
1465 | &p->pr_ppid, &p->pr_pgrp, &p->pr_sid, | |
1466 | &pr_flag, | |
1467 | &pr_nice); | |
1468 | ||
1469 | if (n_fields != 6) | |
1470 | { | |
1471 | /* Again, we couldn't read the complementary information about | |
1472 | the process state. However, we already have minimal | |
1473 | information, so we just return 1 here. */ | |
1474 | do_cleanups (c); | |
1475 | return 1; | |
1476 | } | |
1477 | ||
1478 | /* Filling the structure fields. */ | |
1479 | prog_state = strchr (valid_states, pr_sname); | |
1480 | if (prog_state != NULL) | |
1481 | p->pr_state = prog_state - valid_states; | |
1482 | else | |
1483 | { | |
1484 | /* Zero means "Running". */ | |
1485 | p->pr_state = 0; | |
1486 | } | |
1487 | ||
1488 | p->pr_sname = p->pr_state > 5 ? '.' : pr_sname; | |
1489 | p->pr_zomb = p->pr_sname == 'Z'; | |
1490 | p->pr_nice = pr_nice; | |
1491 | p->pr_flag = pr_flag; | |
1492 | ||
1493 | /* Finally, obtaining the UID and GID. For that, we read and parse the | |
1494 | contents of the `/proc/PID/status' file. */ | |
1495 | xsnprintf (filename, sizeof (filename), "/proc/%d/status", (int) pid); | |
1496 | proc_status = target_fileio_read_stralloc (filename); | |
1497 | make_cleanup (xfree, proc_status); | |
1498 | ||
1499 | if (proc_status == NULL || *proc_status == '\0') | |
1500 | { | |
1501 | /* Returning 1 since we already have a bunch of information. */ | |
1502 | do_cleanups (c); | |
1503 | return 1; | |
1504 | } | |
1505 | ||
1506 | /* Extracting the UID. */ | |
1507 | tmpstr = strstr (proc_status, "Uid:"); | |
1508 | if (tmpstr != NULL) | |
1509 | { | |
1510 | /* Advancing the pointer to the beginning of the UID. */ | |
1511 | tmpstr += sizeof ("Uid:"); | |
1512 | while (*tmpstr != '\0' && !isdigit (*tmpstr)) | |
1513 | ++tmpstr; | |
1514 | ||
1515 | if (isdigit (*tmpstr)) | |
1516 | p->pr_uid = strtol (tmpstr, &tmpstr, 10); | |
1517 | } | |
1518 | ||
1519 | /* Extracting the GID. */ | |
1520 | tmpstr = strstr (proc_status, "Gid:"); | |
1521 | if (tmpstr != NULL) | |
1522 | { | |
1523 | /* Advancing the pointer to the beginning of the GID. */ | |
1524 | tmpstr += sizeof ("Gid:"); | |
1525 | while (*tmpstr != '\0' && !isdigit (*tmpstr)) | |
1526 | ++tmpstr; | |
1527 | ||
1528 | if (isdigit (*tmpstr)) | |
1529 | p->pr_gid = strtol (tmpstr, &tmpstr, 10); | |
1530 | } | |
1531 | ||
1532 | do_cleanups (c); | |
1533 | ||
1534 | return 1; | |
1535 | } | |
1536 | ||
f968fe80 AA |
1537 | /* Build the note section for a corefile, and return it in a malloc |
1538 | buffer. */ | |
6432734d | 1539 | |
f968fe80 AA |
1540 | static char * |
1541 | linux_make_corefile_notes (struct gdbarch *gdbarch, bfd *obfd, int *note_size) | |
6432734d UW |
1542 | { |
1543 | struct linux_corefile_thread_data thread_args; | |
b3ac9c77 | 1544 | struct elf_internal_linux_prpsinfo prpsinfo; |
6432734d UW |
1545 | char *note_data = NULL; |
1546 | gdb_byte *auxv; | |
1547 | int auxv_len; | |
22fd09ae | 1548 | volatile struct gdb_exception e; |
6432734d | 1549 | |
f968fe80 AA |
1550 | if (! gdbarch_iterate_over_regset_sections_p (gdbarch)) |
1551 | return NULL; | |
1552 | ||
b3ac9c77 | 1553 | if (linux_fill_prpsinfo (&prpsinfo)) |
6432734d | 1554 | { |
b3ac9c77 SDJ |
1555 | if (gdbarch_elfcore_write_linux_prpsinfo_p (gdbarch)) |
1556 | { | |
1557 | note_data = gdbarch_elfcore_write_linux_prpsinfo (gdbarch, obfd, | |
1558 | note_data, note_size, | |
1559 | &prpsinfo); | |
1560 | } | |
1561 | else | |
1562 | { | |
1563 | if (gdbarch_ptr_bit (gdbarch) == 64) | |
1564 | note_data = elfcore_write_linux_prpsinfo64 (obfd, | |
1565 | note_data, note_size, | |
1566 | &prpsinfo); | |
1567 | else | |
1568 | note_data = elfcore_write_linux_prpsinfo32 (obfd, | |
1569 | note_data, note_size, | |
1570 | &prpsinfo); | |
1571 | } | |
6432734d UW |
1572 | } |
1573 | ||
1574 | /* Thread register information. */ | |
22fd09ae JK |
1575 | TRY_CATCH (e, RETURN_MASK_ERROR) |
1576 | { | |
1577 | update_thread_list (); | |
1578 | } | |
1579 | if (e.reason < 0) | |
1580 | exception_print (gdb_stderr, e); | |
6432734d UW |
1581 | thread_args.gdbarch = gdbarch; |
1582 | thread_args.pid = ptid_get_pid (inferior_ptid); | |
1583 | thread_args.obfd = obfd; | |
1584 | thread_args.note_data = note_data; | |
1585 | thread_args.note_size = note_size; | |
6432734d | 1586 | thread_args.stop_signal = find_stop_signal (); |
6432734d UW |
1587 | iterate_over_threads (linux_corefile_thread_callback, &thread_args); |
1588 | note_data = thread_args.note_data; | |
1589 | if (!note_data) | |
1590 | return NULL; | |
1591 | ||
1592 | /* Auxillary vector. */ | |
1593 | auxv_len = target_read_alloc (¤t_target, TARGET_OBJECT_AUXV, | |
1594 | NULL, &auxv); | |
1595 | if (auxv_len > 0) | |
1596 | { | |
1597 | note_data = elfcore_write_note (obfd, note_data, note_size, | |
1598 | "CORE", NT_AUXV, auxv, auxv_len); | |
1599 | xfree (auxv); | |
1600 | ||
1601 | if (!note_data) | |
1602 | return NULL; | |
1603 | } | |
1604 | ||
1605 | /* SPU information. */ | |
1606 | note_data = linux_spu_make_corefile_notes (obfd, note_data, note_size); | |
1607 | if (!note_data) | |
1608 | return NULL; | |
1609 | ||
451b7c33 TT |
1610 | /* File mappings. */ |
1611 | note_data = linux_make_mappings_corefile_notes (gdbarch, obfd, | |
1612 | note_data, note_size); | |
1613 | ||
6432734d UW |
1614 | return note_data; |
1615 | } | |
1616 | ||
eb14d406 SDJ |
1617 | /* Implementation of `gdbarch_gdb_signal_from_target', as defined in |
1618 | gdbarch.h. This function is not static because it is exported to | |
1619 | other -tdep files. */ | |
1620 | ||
1621 | enum gdb_signal | |
1622 | linux_gdb_signal_from_target (struct gdbarch *gdbarch, int signal) | |
1623 | { | |
1624 | switch (signal) | |
1625 | { | |
1626 | case 0: | |
1627 | return GDB_SIGNAL_0; | |
1628 | ||
1629 | case LINUX_SIGHUP: | |
1630 | return GDB_SIGNAL_HUP; | |
1631 | ||
1632 | case LINUX_SIGINT: | |
1633 | return GDB_SIGNAL_INT; | |
1634 | ||
1635 | case LINUX_SIGQUIT: | |
1636 | return GDB_SIGNAL_QUIT; | |
1637 | ||
1638 | case LINUX_SIGILL: | |
1639 | return GDB_SIGNAL_ILL; | |
1640 | ||
1641 | case LINUX_SIGTRAP: | |
1642 | return GDB_SIGNAL_TRAP; | |
1643 | ||
1644 | case LINUX_SIGABRT: | |
1645 | return GDB_SIGNAL_ABRT; | |
1646 | ||
1647 | case LINUX_SIGBUS: | |
1648 | return GDB_SIGNAL_BUS; | |
1649 | ||
1650 | case LINUX_SIGFPE: | |
1651 | return GDB_SIGNAL_FPE; | |
1652 | ||
1653 | case LINUX_SIGKILL: | |
1654 | return GDB_SIGNAL_KILL; | |
1655 | ||
1656 | case LINUX_SIGUSR1: | |
1657 | return GDB_SIGNAL_USR1; | |
1658 | ||
1659 | case LINUX_SIGSEGV: | |
1660 | return GDB_SIGNAL_SEGV; | |
1661 | ||
1662 | case LINUX_SIGUSR2: | |
1663 | return GDB_SIGNAL_USR2; | |
1664 | ||
1665 | case LINUX_SIGPIPE: | |
1666 | return GDB_SIGNAL_PIPE; | |
1667 | ||
1668 | case LINUX_SIGALRM: | |
1669 | return GDB_SIGNAL_ALRM; | |
1670 | ||
1671 | case LINUX_SIGTERM: | |
1672 | return GDB_SIGNAL_TERM; | |
1673 | ||
1674 | case LINUX_SIGCHLD: | |
1675 | return GDB_SIGNAL_CHLD; | |
1676 | ||
1677 | case LINUX_SIGCONT: | |
1678 | return GDB_SIGNAL_CONT; | |
1679 | ||
1680 | case LINUX_SIGSTOP: | |
1681 | return GDB_SIGNAL_STOP; | |
1682 | ||
1683 | case LINUX_SIGTSTP: | |
1684 | return GDB_SIGNAL_TSTP; | |
1685 | ||
1686 | case LINUX_SIGTTIN: | |
1687 | return GDB_SIGNAL_TTIN; | |
1688 | ||
1689 | case LINUX_SIGTTOU: | |
1690 | return GDB_SIGNAL_TTOU; | |
1691 | ||
1692 | case LINUX_SIGURG: | |
1693 | return GDB_SIGNAL_URG; | |
1694 | ||
1695 | case LINUX_SIGXCPU: | |
1696 | return GDB_SIGNAL_XCPU; | |
1697 | ||
1698 | case LINUX_SIGXFSZ: | |
1699 | return GDB_SIGNAL_XFSZ; | |
1700 | ||
1701 | case LINUX_SIGVTALRM: | |
1702 | return GDB_SIGNAL_VTALRM; | |
1703 | ||
1704 | case LINUX_SIGPROF: | |
1705 | return GDB_SIGNAL_PROF; | |
1706 | ||
1707 | case LINUX_SIGWINCH: | |
1708 | return GDB_SIGNAL_WINCH; | |
1709 | ||
1710 | /* No way to differentiate between SIGIO and SIGPOLL. | |
1711 | Therefore, we just handle the first one. */ | |
1712 | case LINUX_SIGIO: | |
1713 | return GDB_SIGNAL_IO; | |
1714 | ||
1715 | case LINUX_SIGPWR: | |
1716 | return GDB_SIGNAL_PWR; | |
1717 | ||
1718 | case LINUX_SIGSYS: | |
1719 | return GDB_SIGNAL_SYS; | |
1720 | ||
1721 | /* SIGRTMIN and SIGRTMAX are not continuous in <gdb/signals.def>, | |
1722 | therefore we have to handle them here. */ | |
1723 | case LINUX_SIGRTMIN: | |
1724 | return GDB_SIGNAL_REALTIME_32; | |
1725 | ||
1726 | case LINUX_SIGRTMAX: | |
1727 | return GDB_SIGNAL_REALTIME_64; | |
1728 | } | |
1729 | ||
1730 | if (signal >= LINUX_SIGRTMIN + 1 && signal <= LINUX_SIGRTMAX - 1) | |
1731 | { | |
1732 | int offset = signal - LINUX_SIGRTMIN + 1; | |
1733 | ||
1734 | return (enum gdb_signal) ((int) GDB_SIGNAL_REALTIME_33 + offset); | |
1735 | } | |
1736 | ||
1737 | return GDB_SIGNAL_UNKNOWN; | |
1738 | } | |
1739 | ||
1740 | /* Implementation of `gdbarch_gdb_signal_to_target', as defined in | |
1741 | gdbarch.h. This function is not static because it is exported to | |
1742 | other -tdep files. */ | |
1743 | ||
1744 | int | |
1745 | linux_gdb_signal_to_target (struct gdbarch *gdbarch, | |
1746 | enum gdb_signal signal) | |
1747 | { | |
1748 | switch (signal) | |
1749 | { | |
1750 | case GDB_SIGNAL_0: | |
1751 | return 0; | |
1752 | ||
1753 | case GDB_SIGNAL_HUP: | |
1754 | return LINUX_SIGHUP; | |
1755 | ||
1756 | case GDB_SIGNAL_INT: | |
1757 | return LINUX_SIGINT; | |
1758 | ||
1759 | case GDB_SIGNAL_QUIT: | |
1760 | return LINUX_SIGQUIT; | |
1761 | ||
1762 | case GDB_SIGNAL_ILL: | |
1763 | return LINUX_SIGILL; | |
1764 | ||
1765 | case GDB_SIGNAL_TRAP: | |
1766 | return LINUX_SIGTRAP; | |
1767 | ||
1768 | case GDB_SIGNAL_ABRT: | |
1769 | return LINUX_SIGABRT; | |
1770 | ||
1771 | case GDB_SIGNAL_FPE: | |
1772 | return LINUX_SIGFPE; | |
1773 | ||
1774 | case GDB_SIGNAL_KILL: | |
1775 | return LINUX_SIGKILL; | |
1776 | ||
1777 | case GDB_SIGNAL_BUS: | |
1778 | return LINUX_SIGBUS; | |
1779 | ||
1780 | case GDB_SIGNAL_SEGV: | |
1781 | return LINUX_SIGSEGV; | |
1782 | ||
1783 | case GDB_SIGNAL_SYS: | |
1784 | return LINUX_SIGSYS; | |
1785 | ||
1786 | case GDB_SIGNAL_PIPE: | |
1787 | return LINUX_SIGPIPE; | |
1788 | ||
1789 | case GDB_SIGNAL_ALRM: | |
1790 | return LINUX_SIGALRM; | |
1791 | ||
1792 | case GDB_SIGNAL_TERM: | |
1793 | return LINUX_SIGTERM; | |
1794 | ||
1795 | case GDB_SIGNAL_URG: | |
1796 | return LINUX_SIGURG; | |
1797 | ||
1798 | case GDB_SIGNAL_STOP: | |
1799 | return LINUX_SIGSTOP; | |
1800 | ||
1801 | case GDB_SIGNAL_TSTP: | |
1802 | return LINUX_SIGTSTP; | |
1803 | ||
1804 | case GDB_SIGNAL_CONT: | |
1805 | return LINUX_SIGCONT; | |
1806 | ||
1807 | case GDB_SIGNAL_CHLD: | |
1808 | return LINUX_SIGCHLD; | |
1809 | ||
1810 | case GDB_SIGNAL_TTIN: | |
1811 | return LINUX_SIGTTIN; | |
1812 | ||
1813 | case GDB_SIGNAL_TTOU: | |
1814 | return LINUX_SIGTTOU; | |
1815 | ||
1816 | case GDB_SIGNAL_IO: | |
1817 | return LINUX_SIGIO; | |
1818 | ||
1819 | case GDB_SIGNAL_XCPU: | |
1820 | return LINUX_SIGXCPU; | |
1821 | ||
1822 | case GDB_SIGNAL_XFSZ: | |
1823 | return LINUX_SIGXFSZ; | |
1824 | ||
1825 | case GDB_SIGNAL_VTALRM: | |
1826 | return LINUX_SIGVTALRM; | |
1827 | ||
1828 | case GDB_SIGNAL_PROF: | |
1829 | return LINUX_SIGPROF; | |
1830 | ||
1831 | case GDB_SIGNAL_WINCH: | |
1832 | return LINUX_SIGWINCH; | |
1833 | ||
1834 | case GDB_SIGNAL_USR1: | |
1835 | return LINUX_SIGUSR1; | |
1836 | ||
1837 | case GDB_SIGNAL_USR2: | |
1838 | return LINUX_SIGUSR2; | |
1839 | ||
1840 | case GDB_SIGNAL_PWR: | |
1841 | return LINUX_SIGPWR; | |
1842 | ||
1843 | case GDB_SIGNAL_POLL: | |
1844 | return LINUX_SIGPOLL; | |
1845 | ||
1846 | /* GDB_SIGNAL_REALTIME_32 is not continuous in <gdb/signals.def>, | |
1847 | therefore we have to handle it here. */ | |
1848 | case GDB_SIGNAL_REALTIME_32: | |
1849 | return LINUX_SIGRTMIN; | |
1850 | ||
1851 | /* Same comment applies to _64. */ | |
1852 | case GDB_SIGNAL_REALTIME_64: | |
1853 | return LINUX_SIGRTMAX; | |
1854 | } | |
1855 | ||
1856 | /* GDB_SIGNAL_REALTIME_33 to _64 are continuous. */ | |
1857 | if (signal >= GDB_SIGNAL_REALTIME_33 | |
1858 | && signal <= GDB_SIGNAL_REALTIME_63) | |
1859 | { | |
1860 | int offset = signal - GDB_SIGNAL_REALTIME_33; | |
1861 | ||
1862 | return LINUX_SIGRTMIN + 1 + offset; | |
1863 | } | |
1864 | ||
1865 | return -1; | |
1866 | } | |
1867 | ||
3437254d PA |
1868 | /* Rummage through mappings to find a mapping's size. */ |
1869 | ||
1870 | static int | |
1871 | find_mapping_size (CORE_ADDR vaddr, unsigned long size, | |
1872 | int read, int write, int exec, int modified, | |
1873 | void *data) | |
1874 | { | |
1875 | struct mem_range *range = data; | |
1876 | ||
1877 | if (vaddr == range->start) | |
1878 | { | |
1879 | range->length = size; | |
1880 | return 1; | |
1881 | } | |
1882 | return 0; | |
1883 | } | |
1884 | ||
cdfa0b0a PA |
1885 | /* Helper for linux_vsyscall_range that does the real work of finding |
1886 | the vsyscall's address range. */ | |
3437254d PA |
1887 | |
1888 | static int | |
cdfa0b0a | 1889 | linux_vsyscall_range_raw (struct gdbarch *gdbarch, struct mem_range *range) |
3437254d PA |
1890 | { |
1891 | if (target_auxv_search (¤t_target, AT_SYSINFO_EHDR, &range->start) <= 0) | |
1892 | return 0; | |
1893 | ||
1894 | /* This is installed by linux_init_abi below, so should always be | |
1895 | available. */ | |
1896 | gdb_assert (gdbarch_find_memory_regions_p (target_gdbarch ())); | |
1897 | ||
1898 | range->length = 0; | |
1899 | gdbarch_find_memory_regions (gdbarch, find_mapping_size, range); | |
1900 | return 1; | |
1901 | } | |
1902 | ||
cdfa0b0a PA |
1903 | /* Implementation of the "vsyscall_range" gdbarch hook. Handles |
1904 | caching, and defers the real work to linux_vsyscall_range_raw. */ | |
1905 | ||
1906 | static int | |
1907 | linux_vsyscall_range (struct gdbarch *gdbarch, struct mem_range *range) | |
1908 | { | |
1909 | struct linux_info *info = get_linux_inferior_data (); | |
1910 | ||
1911 | if (info->vsyscall_range_p == 0) | |
1912 | { | |
1913 | if (linux_vsyscall_range_raw (gdbarch, &info->vsyscall_range)) | |
1914 | info->vsyscall_range_p = 1; | |
1915 | else | |
1916 | info->vsyscall_range_p = -1; | |
1917 | } | |
1918 | ||
1919 | if (info->vsyscall_range_p < 0) | |
1920 | return 0; | |
1921 | ||
1922 | *range = info->vsyscall_range; | |
1923 | return 1; | |
1924 | } | |
1925 | ||
3bc3cebe JK |
1926 | /* Symbols for linux_infcall_mmap's ARG_FLAGS; their Linux MAP_* system |
1927 | definitions would be dependent on compilation host. */ | |
1928 | #define GDB_MMAP_MAP_PRIVATE 0x02 /* Changes are private. */ | |
1929 | #define GDB_MMAP_MAP_ANONYMOUS 0x20 /* Don't use a file. */ | |
1930 | ||
1931 | /* See gdbarch.sh 'infcall_mmap'. */ | |
1932 | ||
1933 | static CORE_ADDR | |
1934 | linux_infcall_mmap (CORE_ADDR size, unsigned prot) | |
1935 | { | |
1936 | struct objfile *objf; | |
1937 | /* Do there still exist any Linux systems without "mmap64"? | |
1938 | "mmap" uses 64-bit off_t on x86_64 and 32-bit off_t on i386 and x32. */ | |
1939 | struct value *mmap_val = find_function_in_inferior ("mmap64", &objf); | |
1940 | struct value *addr_val; | |
1941 | struct gdbarch *gdbarch = get_objfile_arch (objf); | |
1942 | CORE_ADDR retval; | |
1943 | enum | |
1944 | { | |
2a546367 | 1945 | ARG_ADDR, ARG_LENGTH, ARG_PROT, ARG_FLAGS, ARG_FD, ARG_OFFSET, ARG_LAST |
3bc3cebe | 1946 | }; |
2a546367 | 1947 | struct value *arg[ARG_LAST]; |
3bc3cebe JK |
1948 | |
1949 | arg[ARG_ADDR] = value_from_pointer (builtin_type (gdbarch)->builtin_data_ptr, | |
1950 | 0); | |
1951 | /* Assuming sizeof (unsigned long) == sizeof (size_t). */ | |
1952 | arg[ARG_LENGTH] = value_from_ulongest | |
1953 | (builtin_type (gdbarch)->builtin_unsigned_long, size); | |
1954 | gdb_assert ((prot & ~(GDB_MMAP_PROT_READ | GDB_MMAP_PROT_WRITE | |
1955 | | GDB_MMAP_PROT_EXEC)) | |
1956 | == 0); | |
1957 | arg[ARG_PROT] = value_from_longest (builtin_type (gdbarch)->builtin_int, prot); | |
1958 | arg[ARG_FLAGS] = value_from_longest (builtin_type (gdbarch)->builtin_int, | |
1959 | GDB_MMAP_MAP_PRIVATE | |
1960 | | GDB_MMAP_MAP_ANONYMOUS); | |
1961 | arg[ARG_FD] = value_from_longest (builtin_type (gdbarch)->builtin_int, -1); | |
1962 | arg[ARG_OFFSET] = value_from_longest (builtin_type (gdbarch)->builtin_int64, | |
1963 | 0); | |
2a546367 | 1964 | addr_val = call_function_by_hand (mmap_val, ARG_LAST, arg); |
3bc3cebe JK |
1965 | retval = value_as_address (addr_val); |
1966 | if (retval == (CORE_ADDR) -1) | |
1967 | error (_("Failed inferior mmap call for %s bytes, errno is changed."), | |
1968 | pulongest (size)); | |
1969 | return retval; | |
1970 | } | |
1971 | ||
a5ee0f0c PA |
1972 | /* To be called from the various GDB_OSABI_LINUX handlers for the |
1973 | various GNU/Linux architectures and machine types. */ | |
1974 | ||
1975 | void | |
1976 | linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) | |
1977 | { | |
1978 | set_gdbarch_core_pid_to_str (gdbarch, linux_core_pid_to_str); | |
3030c96e | 1979 | set_gdbarch_info_proc (gdbarch, linux_info_proc); |
451b7c33 | 1980 | set_gdbarch_core_info_proc (gdbarch, linux_core_info_proc); |
35c2fab7 | 1981 | set_gdbarch_find_memory_regions (gdbarch, linux_find_memory_regions); |
f968fe80 | 1982 | set_gdbarch_make_corefile_notes (gdbarch, linux_make_corefile_notes); |
33fbcbee PA |
1983 | set_gdbarch_has_shared_address_space (gdbarch, |
1984 | linux_has_shared_address_space); | |
eb14d406 SDJ |
1985 | set_gdbarch_gdb_signal_from_target (gdbarch, |
1986 | linux_gdb_signal_from_target); | |
1987 | set_gdbarch_gdb_signal_to_target (gdbarch, | |
1988 | linux_gdb_signal_to_target); | |
3437254d | 1989 | set_gdbarch_vsyscall_range (gdbarch, linux_vsyscall_range); |
3bc3cebe | 1990 | set_gdbarch_infcall_mmap (gdbarch, linux_infcall_mmap); |
a5ee0f0c | 1991 | } |
06253dd3 | 1992 | |
70221824 PA |
1993 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
1994 | extern initialize_file_ftype _initialize_linux_tdep; | |
1995 | ||
06253dd3 JK |
1996 | void |
1997 | _initialize_linux_tdep (void) | |
1998 | { | |
1999 | linux_gdbarch_data_handle = | |
2000 | gdbarch_data_register_post_init (init_linux_gdbarch_data); | |
cdfa0b0a PA |
2001 | |
2002 | /* Set a cache per-inferior. */ | |
2003 | linux_inferior_data | |
2004 | = register_inferior_data_with_cleanup (NULL, linux_inferior_data_cleanup); | |
2005 | /* Observers used to invalidate the cache when needed. */ | |
2006 | observer_attach_inferior_exit (invalidate_linux_cache_inf); | |
2007 | observer_attach_inferior_appeared (invalidate_linux_cache_inf); | |
06253dd3 | 2008 | } |