Commit | Line | Data |
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c906108c | 1 | /* Core dump and executable file functions below target vector, for GDB. |
4646aa9d | 2 | |
42a4f53d | 3 | Copyright (C) 1986-2019 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
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 | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
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. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
0e24ac5d | 21 | #include "arch-utils.h" |
c906108c SS |
22 | #include <signal.h> |
23 | #include <fcntl.h> | |
c5aa993b | 24 | #include "frame.h" /* required by inferior.h */ |
c906108c | 25 | #include "inferior.h" |
45741a9c | 26 | #include "infrun.h" |
c906108c SS |
27 | #include "symtab.h" |
28 | #include "command.h" | |
29 | #include "bfd.h" | |
30 | #include "target.h" | |
3b3dac9b | 31 | #include "process-stratum-target.h" |
c906108c SS |
32 | #include "gdbcore.h" |
33 | #include "gdbthread.h" | |
4e052eda | 34 | #include "regcache.h" |
0e24ac5d | 35 | #include "regset.h" |
990f9fe3 | 36 | #include "symfile.h" |
4646aa9d | 37 | #include "exec.h" |
dbda9972 | 38 | #include "readline/readline.h" |
a77053c2 | 39 | #include "solib.h" |
f90c07ac | 40 | #include "filenames.h" |
6c95b8df | 41 | #include "progspace.h" |
516ba659 | 42 | #include "objfiles.h" |
cbb099e8 | 43 | #include "gdb_bfd.h" |
9852c492 | 44 | #include "completer.h" |
0747795c | 45 | #include "common/filestuff.h" |
8e860359 | 46 | |
ee28ca0f AC |
47 | #ifndef O_LARGEFILE |
48 | #define O_LARGEFILE 0 | |
49 | #endif | |
50 | ||
15244507 PA |
51 | static core_fns *sniff_core_bfd (gdbarch *core_gdbarch, |
52 | bfd *abfd); | |
53 | ||
f6ac5f3d PA |
54 | /* The core file target. */ |
55 | ||
d9f719f1 PA |
56 | static const target_info core_target_info = { |
57 | "core", | |
58 | N_("Local core dump file"), | |
59 | N_("Use a core file as a target. Specify the filename of the core file.") | |
60 | }; | |
61 | ||
3b3dac9b | 62 | class core_target final : public process_stratum_target |
f6ac5f3d PA |
63 | { |
64 | public: | |
15244507 PA |
65 | core_target (); |
66 | ~core_target () override; | |
f6ac5f3d | 67 | |
d9f719f1 PA |
68 | const target_info &info () const override |
69 | { return core_target_info; } | |
f6ac5f3d | 70 | |
f6ac5f3d PA |
71 | void close () override; |
72 | void detach (inferior *, int) override; | |
73 | void fetch_registers (struct regcache *, int) override; | |
74 | ||
75 | enum target_xfer_status xfer_partial (enum target_object object, | |
76 | const char *annex, | |
77 | gdb_byte *readbuf, | |
78 | const gdb_byte *writebuf, | |
79 | ULONGEST offset, ULONGEST len, | |
80 | ULONGEST *xfered_len) override; | |
81 | void files_info () override; | |
82 | ||
57810aa7 | 83 | bool thread_alive (ptid_t ptid) override; |
f6ac5f3d PA |
84 | const struct target_desc *read_description () override; |
85 | ||
86 | const char *pid_to_str (ptid_t) override; | |
87 | ||
88 | const char *thread_name (struct thread_info *) override; | |
89 | ||
f3d11a9a | 90 | bool has_all_memory () override { return false; } |
57810aa7 PA |
91 | bool has_memory () override; |
92 | bool has_stack () override; | |
93 | bool has_registers () override; | |
f3d11a9a PA |
94 | bool has_execution (ptid_t) override { return false; } |
95 | ||
f6ac5f3d | 96 | bool info_proc (const char *, enum info_proc_what) override; |
f6ac5f3d | 97 | |
15244507 PA |
98 | /* A few helpers. */ |
99 | ||
100 | /* Getter, see variable definition. */ | |
101 | struct gdbarch *core_gdbarch () | |
102 | { | |
103 | return m_core_gdbarch; | |
104 | } | |
105 | ||
106 | /* See definition. */ | |
107 | void get_core_register_section (struct regcache *regcache, | |
108 | const struct regset *regset, | |
109 | const char *name, | |
dbd534fe | 110 | int section_min_size, |
15244507 PA |
111 | int which, |
112 | const char *human_name, | |
113 | bool required); | |
114 | ||
115 | private: /* per-core data */ | |
116 | ||
117 | /* The core's section table. Note that these target sections are | |
118 | *not* mapped in the current address spaces' set of target | |
119 | sections --- those should come only from pure executable or | |
120 | shared library bfds. The core bfd sections are an implementation | |
121 | detail of the core target, just like ptrace is for unix child | |
122 | targets. */ | |
123 | target_section_table m_core_section_table {}; | |
124 | ||
125 | /* The core_fns for a core file handler that is prepared to read the | |
126 | core file currently open on core_bfd. */ | |
127 | core_fns *m_core_vec = NULL; | |
128 | ||
129 | /* FIXME: kettenis/20031023: Eventually this field should | |
130 | disappear. */ | |
131 | struct gdbarch *m_core_gdbarch = NULL; | |
132 | }; | |
c906108c | 133 | |
15244507 PA |
134 | core_target::core_target () |
135 | { | |
15244507 | 136 | m_core_gdbarch = gdbarch_from_bfd (core_bfd); |
2acceee2 | 137 | |
15244507 PA |
138 | /* Find a suitable core file handler to munch on core_bfd */ |
139 | m_core_vec = sniff_core_bfd (m_core_gdbarch, core_bfd); | |
2acceee2 | 140 | |
15244507 PA |
141 | /* Find the data section */ |
142 | if (build_section_table (core_bfd, | |
143 | &m_core_section_table.sections, | |
144 | &m_core_section_table.sections_end)) | |
145 | error (_("\"%s\": Can't find sections: %s"), | |
146 | bfd_get_filename (core_bfd), bfd_errmsg (bfd_get_error ())); | |
147 | } | |
0e24ac5d | 148 | |
15244507 PA |
149 | core_target::~core_target () |
150 | { | |
151 | xfree (m_core_section_table.sections); | |
152 | } | |
0e24ac5d | 153 | |
15244507 PA |
154 | /* List of all available core_fns. On gdb startup, each core file |
155 | register reader calls deprecated_add_core_fns() to register | |
156 | information on each core format it is prepared to read. */ | |
07b82ea5 | 157 | |
15244507 | 158 | static struct core_fns *core_file_fns = NULL; |
2acceee2 | 159 | |
020cc13c | 160 | static int gdb_check_format (bfd *); |
2acceee2 | 161 | |
4efb68b1 | 162 | static void add_to_thread_list (bfd *, asection *, void *); |
c906108c | 163 | |
7f9f62ba PA |
164 | /* An arbitrary identifier for the core inferior. */ |
165 | #define CORELOW_PID 1 | |
166 | ||
aff410f1 MS |
167 | /* Link a new core_fns into the global core_file_fns list. Called on |
168 | gdb startup by the _initialize routine in each core file register | |
b021a221 | 169 | reader, to register information about each format the reader is |
aff410f1 | 170 | prepared to handle. */ |
c906108c SS |
171 | |
172 | void | |
00e32a35 | 173 | deprecated_add_core_fns (struct core_fns *cf) |
c906108c | 174 | { |
c5aa993b | 175 | cf->next = core_file_fns; |
c906108c SS |
176 | core_file_fns = cf; |
177 | } | |
178 | ||
2acceee2 JM |
179 | /* The default function that core file handlers can use to examine a |
180 | core file BFD and decide whether or not to accept the job of | |
aff410f1 | 181 | reading the core file. */ |
2acceee2 JM |
182 | |
183 | int | |
fba45db2 | 184 | default_core_sniffer (struct core_fns *our_fns, bfd *abfd) |
2acceee2 JM |
185 | { |
186 | int result; | |
187 | ||
188 | result = (bfd_get_flavour (abfd) == our_fns -> core_flavour); | |
189 | return (result); | |
190 | } | |
191 | ||
192 | /* Walk through the list of core functions to find a set that can | |
06b9f45f | 193 | handle the core file open on ABFD. Returns pointer to set that is |
aff410f1 | 194 | selected. */ |
2acceee2 JM |
195 | |
196 | static struct core_fns * | |
15244507 | 197 | sniff_core_bfd (struct gdbarch *core_gdbarch, bfd *abfd) |
2acceee2 JM |
198 | { |
199 | struct core_fns *cf; | |
200 | struct core_fns *yummy = NULL; | |
45eba0ab | 201 | int matches = 0; |
2acceee2 | 202 | |
aff410f1 MS |
203 | /* Don't sniff if we have support for register sets in |
204 | CORE_GDBARCH. */ | |
29082443 | 205 | if (core_gdbarch && gdbarch_iterate_over_regset_sections_p (core_gdbarch)) |
0e24ac5d MK |
206 | return NULL; |
207 | ||
2acceee2 JM |
208 | for (cf = core_file_fns; cf != NULL; cf = cf->next) |
209 | { | |
210 | if (cf->core_sniffer (cf, abfd)) | |
211 | { | |
212 | yummy = cf; | |
213 | matches++; | |
214 | } | |
215 | } | |
216 | if (matches > 1) | |
217 | { | |
8a3fe4f8 | 218 | warning (_("\"%s\": ambiguous core format, %d handlers match"), |
2acceee2 JM |
219 | bfd_get_filename (abfd), matches); |
220 | } | |
221 | else if (matches == 0) | |
06b9f45f JK |
222 | error (_("\"%s\": no core file handler recognizes format"), |
223 | bfd_get_filename (abfd)); | |
224 | ||
2acceee2 JM |
225 | return (yummy); |
226 | } | |
227 | ||
228 | /* The default is to reject every core file format we see. Either | |
229 | BFD has to recognize it, or we have to provide a function in the | |
aff410f1 | 230 | core file handler that recognizes it. */ |
2acceee2 JM |
231 | |
232 | int | |
fba45db2 | 233 | default_check_format (bfd *abfd) |
2acceee2 JM |
234 | { |
235 | return (0); | |
236 | } | |
237 | ||
aff410f1 | 238 | /* Attempt to recognize core file formats that BFD rejects. */ |
2acceee2 | 239 | |
020cc13c | 240 | static int |
fba45db2 | 241 | gdb_check_format (bfd *abfd) |
2acceee2 JM |
242 | { |
243 | struct core_fns *cf; | |
244 | ||
245 | for (cf = core_file_fns; cf != NULL; cf = cf->next) | |
246 | { | |
247 | if (cf->check_format (abfd)) | |
248 | { | |
81a9a963 | 249 | return (1); |
2acceee2 JM |
250 | } |
251 | } | |
81a9a963 | 252 | return (0); |
2acceee2 | 253 | } |
c906108c | 254 | |
15244507 | 255 | /* Close the core target. */ |
c906108c | 256 | |
15244507 PA |
257 | void |
258 | core_target::close () | |
c906108c | 259 | { |
c906108c SS |
260 | if (core_bfd) |
261 | { | |
aff410f1 MS |
262 | inferior_ptid = null_ptid; /* Avoid confusion from thread |
263 | stuff. */ | |
00431a78 | 264 | exit_inferior_silent (current_inferior ()); |
c906108c | 265 | |
aff410f1 MS |
266 | /* Clear out solib state while the bfd is still open. See |
267 | comments in clear_solib in solib.c. */ | |
a77053c2 | 268 | clear_solib (); |
7a292a7a | 269 | |
06333fea | 270 | current_program_space->cbfd.reset (nullptr); |
c906108c | 271 | } |
c906108c | 272 | |
15244507 PA |
273 | /* Core targets are heap-allocated (see core_target_open), so here |
274 | we delete ourselves. */ | |
275 | delete this; | |
74b7792f AC |
276 | } |
277 | ||
aff410f1 MS |
278 | /* Look for sections whose names start with `.reg/' so that we can |
279 | extract the list of threads in a core file. */ | |
c906108c SS |
280 | |
281 | static void | |
4efb68b1 | 282 | add_to_thread_list (bfd *abfd, asection *asect, void *reg_sect_arg) |
c906108c | 283 | { |
0de3b513 | 284 | ptid_t ptid; |
3cdd9356 PA |
285 | int core_tid; |
286 | int pid, lwpid; | |
c906108c | 287 | asection *reg_sect = (asection *) reg_sect_arg; |
88f38a04 PA |
288 | int fake_pid_p = 0; |
289 | struct inferior *inf; | |
c906108c | 290 | |
61012eef | 291 | if (!startswith (bfd_section_name (abfd, asect), ".reg/")) |
c906108c SS |
292 | return; |
293 | ||
3cdd9356 | 294 | core_tid = atoi (bfd_section_name (abfd, asect) + 5); |
c906108c | 295 | |
261b8d08 PA |
296 | pid = bfd_core_file_pid (core_bfd); |
297 | if (pid == 0) | |
3cdd9356 | 298 | { |
88f38a04 | 299 | fake_pid_p = 1; |
3cdd9356 | 300 | pid = CORELOW_PID; |
3cdd9356 | 301 | } |
0de3b513 | 302 | |
261b8d08 PA |
303 | lwpid = core_tid; |
304 | ||
88f38a04 PA |
305 | inf = current_inferior (); |
306 | if (inf->pid == 0) | |
307 | { | |
308 | inferior_appeared (inf, pid); | |
309 | inf->fake_pid_p = fake_pid_p; | |
310 | } | |
3cdd9356 | 311 | |
fd79271b | 312 | ptid = ptid_t (pid, lwpid, 0); |
3cdd9356 PA |
313 | |
314 | add_thread (ptid); | |
c906108c SS |
315 | |
316 | /* Warning, Will Robinson, looking at BFD private data! */ | |
317 | ||
318 | if (reg_sect != NULL | |
aff410f1 MS |
319 | && asect->filepos == reg_sect->filepos) /* Did we find .reg? */ |
320 | inferior_ptid = ptid; /* Yes, make it current. */ | |
c906108c SS |
321 | } |
322 | ||
451953fa PA |
323 | /* Issue a message saying we have no core to debug, if FROM_TTY. */ |
324 | ||
325 | static void | |
326 | maybe_say_no_core_file_now (int from_tty) | |
327 | { | |
328 | if (from_tty) | |
329 | printf_filtered (_("No core file now.\n")); | |
330 | } | |
331 | ||
332 | /* Backward compatability with old way of specifying core files. */ | |
333 | ||
334 | void | |
335 | core_file_command (const char *filename, int from_tty) | |
336 | { | |
337 | dont_repeat (); /* Either way, seems bogus. */ | |
338 | ||
339 | if (filename == NULL) | |
340 | { | |
341 | if (core_bfd != NULL) | |
342 | { | |
343 | target_detach (current_inferior (), from_tty); | |
344 | gdb_assert (core_bfd == NULL); | |
345 | } | |
346 | else | |
347 | maybe_say_no_core_file_now (from_tty); | |
348 | } | |
349 | else | |
350 | core_target_open (filename, from_tty); | |
351 | } | |
352 | ||
d9f719f1 | 353 | /* See gdbcore.h. */ |
c906108c | 354 | |
f6ac5f3d | 355 | void |
d9f719f1 | 356 | core_target_open (const char *arg, int from_tty) |
c906108c SS |
357 | { |
358 | const char *p; | |
359 | int siggy; | |
c906108c | 360 | int scratch_chan; |
ee28ca0f | 361 | int flags; |
c906108c SS |
362 | |
363 | target_preopen (from_tty); | |
014f9477 | 364 | if (!arg) |
c906108c | 365 | { |
8a3fe4f8 | 366 | if (core_bfd) |
3e43a32a MS |
367 | error (_("No core file specified. (Use `detach' " |
368 | "to stop debugging a core file.)")); | |
8a3fe4f8 AC |
369 | else |
370 | error (_("No core file specified.")); | |
c906108c SS |
371 | } |
372 | ||
ee0c3293 TT |
373 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (arg)); |
374 | if (!IS_ABSOLUTE_PATH (filename.get ())) | |
375 | filename.reset (concat (current_directory, "/", | |
376 | filename.get (), (char *) NULL)); | |
c906108c | 377 | |
ee28ca0f AC |
378 | flags = O_BINARY | O_LARGEFILE; |
379 | if (write_files) | |
380 | flags |= O_RDWR; | |
381 | else | |
382 | flags |= O_RDONLY; | |
ee0c3293 | 383 | scratch_chan = gdb_open_cloexec (filename.get (), flags, 0); |
c906108c | 384 | if (scratch_chan < 0) |
ee0c3293 | 385 | perror_with_name (filename.get ()); |
c906108c | 386 | |
ee0c3293 | 387 | gdb_bfd_ref_ptr temp_bfd (gdb_bfd_fopen (filename.get (), gnutarget, |
192b62ce TT |
388 | write_files ? FOPEN_RUB : FOPEN_RB, |
389 | scratch_chan)); | |
c906108c | 390 | if (temp_bfd == NULL) |
ee0c3293 | 391 | perror_with_name (filename.get ()); |
c906108c | 392 | |
192b62ce TT |
393 | if (!bfd_check_format (temp_bfd.get (), bfd_core) |
394 | && !gdb_check_format (temp_bfd.get ())) | |
c906108c SS |
395 | { |
396 | /* Do it after the err msg */ | |
aff410f1 MS |
397 | /* FIXME: should be checking for errors from bfd_close (for one |
398 | thing, on error it does not free all the storage associated | |
399 | with the bfd). */ | |
8a3fe4f8 | 400 | error (_("\"%s\" is not a core dump: %s"), |
ee0c3293 | 401 | filename.get (), bfd_errmsg (bfd_get_error ())); |
c906108c SS |
402 | } |
403 | ||
06333fea | 404 | current_program_space->cbfd = std::move (temp_bfd); |
c906108c | 405 | |
15244507 | 406 | core_target *target = new core_target (); |
0e24ac5d | 407 | |
15244507 PA |
408 | /* Own the target until it is successfully pushed. */ |
409 | target_ops_up target_holder (target); | |
2acceee2 | 410 | |
c906108c SS |
411 | validate_files (); |
412 | ||
2f1b5984 MK |
413 | /* If we have no exec file, try to set the architecture from the |
414 | core file. We don't do this unconditionally since an exec file | |
415 | typically contains more information that helps us determine the | |
416 | architecture than a core file. */ | |
417 | if (!exec_bfd) | |
418 | set_gdbarch_from_file (core_bfd); | |
cbda0a99 | 419 | |
15244507 PA |
420 | push_target (target); |
421 | target_holder.release (); | |
c906108c | 422 | |
3cdd9356 | 423 | inferior_ptid = null_ptid; |
0de3b513 | 424 | |
739fc47a PA |
425 | /* Need to flush the register cache (and the frame cache) from a |
426 | previous debug session. If inferior_ptid ends up the same as the | |
427 | last debug session --- e.g., b foo; run; gcore core1; step; gcore | |
428 | core2; core core1; core core2 --- then there's potential for | |
429 | get_current_regcache to return the cached regcache of the | |
430 | previous session, and the frame cache being stale. */ | |
431 | registers_changed (); | |
432 | ||
0de3b513 PA |
433 | /* Build up thread list from BFD sections, and possibly set the |
434 | current thread to the .reg/NN section matching the .reg | |
aff410f1 | 435 | section. */ |
0de3b513 PA |
436 | bfd_map_over_sections (core_bfd, add_to_thread_list, |
437 | bfd_get_section_by_name (core_bfd, ".reg")); | |
438 | ||
d7e15655 | 439 | if (inferior_ptid == null_ptid) |
3cdd9356 PA |
440 | { |
441 | /* Either we found no .reg/NN section, and hence we have a | |
442 | non-threaded core (single-threaded, from gdb's perspective), | |
443 | or for some reason add_to_thread_list couldn't determine | |
444 | which was the "main" thread. The latter case shouldn't | |
445 | usually happen, but we're dealing with input here, which can | |
446 | always be broken in different ways. */ | |
00431a78 | 447 | thread_info *thread = first_thread_of_inferior (current_inferior ()); |
c5504eaf | 448 | |
3cdd9356 PA |
449 | if (thread == NULL) |
450 | { | |
c45ceae0 | 451 | inferior_appeared (current_inferior (), CORELOW_PID); |
f2907e49 | 452 | inferior_ptid = ptid_t (CORELOW_PID); |
3cdd9356 PA |
453 | add_thread_silent (inferior_ptid); |
454 | } | |
455 | else | |
00431a78 | 456 | switch_to_thread (thread); |
3cdd9356 PA |
457 | } |
458 | ||
15244507 | 459 | post_create_inferior (target, from_tty); |
959b8724 | 460 | |
0de3b513 PA |
461 | /* Now go through the target stack looking for threads since there |
462 | may be a thread_stratum target loaded on top of target core by | |
463 | now. The layer above should claim threads found in the BFD | |
464 | sections. */ | |
492d29ea | 465 | TRY |
8e7b59a5 | 466 | { |
e8032dde | 467 | target_update_thread_list (); |
8e7b59a5 KS |
468 | } |
469 | ||
492d29ea PA |
470 | CATCH (except, RETURN_MASK_ERROR) |
471 | { | |
472 | exception_print (gdb_stderr, except); | |
473 | } | |
474 | END_CATCH | |
0de3b513 | 475 | |
c906108c SS |
476 | p = bfd_core_file_failing_command (core_bfd); |
477 | if (p) | |
a3f17187 | 478 | printf_filtered (_("Core was generated by `%s'.\n"), p); |
c906108c | 479 | |
0c557179 SDJ |
480 | /* Clearing any previous state of convenience variables. */ |
481 | clear_exit_convenience_vars (); | |
482 | ||
c906108c SS |
483 | siggy = bfd_core_file_failing_signal (core_bfd); |
484 | if (siggy > 0) | |
423ec54c | 485 | { |
15244507 PA |
486 | gdbarch *core_gdbarch = target->core_gdbarch (); |
487 | ||
22203bbf | 488 | /* If we don't have a CORE_GDBARCH to work with, assume a native |
1f8cf220 PA |
489 | core (map gdb_signal from host signals). If we do have |
490 | CORE_GDBARCH to work with, but no gdb_signal_from_target | |
491 | implementation for that gdbarch, as a fallback measure, | |
492 | assume the host signal mapping. It'll be correct for native | |
493 | cores, but most likely incorrect for cross-cores. */ | |
2ea28649 | 494 | enum gdb_signal sig = (core_gdbarch != NULL |
1f8cf220 PA |
495 | && gdbarch_gdb_signal_from_target_p (core_gdbarch) |
496 | ? gdbarch_gdb_signal_from_target (core_gdbarch, | |
497 | siggy) | |
498 | : gdb_signal_from_host (siggy)); | |
423ec54c | 499 | |
2d503272 PM |
500 | printf_filtered (_("Program terminated with signal %s, %s.\n"), |
501 | gdb_signal_to_name (sig), gdb_signal_to_string (sig)); | |
0c557179 SDJ |
502 | |
503 | /* Set the value of the internal variable $_exitsignal, | |
504 | which holds the signal uncaught by the inferior. */ | |
505 | set_internalvar_integer (lookup_internalvar ("_exitsignal"), | |
506 | siggy); | |
423ec54c | 507 | } |
c906108c | 508 | |
87ab71f0 PA |
509 | /* Fetch all registers from core file. */ |
510 | target_fetch_registers (get_current_regcache (), -1); | |
c906108c | 511 | |
87ab71f0 PA |
512 | /* Now, set up the frame cache, and print the top of stack. */ |
513 | reinit_frame_cache (); | |
08d72866 | 514 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
f0e8c4c5 JK |
515 | |
516 | /* Current thread should be NUM 1 but the user does not know that. | |
517 | If a program is single threaded gdb in general does not mention | |
518 | anything about threads. That is why the test is >= 2. */ | |
519 | if (thread_count () >= 2) | |
520 | { | |
492d29ea | 521 | TRY |
f0e8c4c5 JK |
522 | { |
523 | thread_command (NULL, from_tty); | |
524 | } | |
492d29ea PA |
525 | CATCH (except, RETURN_MASK_ERROR) |
526 | { | |
527 | exception_print (gdb_stderr, except); | |
528 | } | |
529 | END_CATCH | |
f0e8c4c5 | 530 | } |
c906108c SS |
531 | } |
532 | ||
f6ac5f3d PA |
533 | void |
534 | core_target::detach (inferior *inf, int from_tty) | |
c906108c | 535 | { |
15244507 PA |
536 | /* Note that 'this' is dangling after this call. unpush_target |
537 | closes the target, and our close implementation deletes | |
538 | 'this'. */ | |
f6ac5f3d | 539 | unpush_target (this); |
15244507 | 540 | |
c906108c | 541 | reinit_frame_cache (); |
451953fa | 542 | maybe_say_no_core_file_now (from_tty); |
c906108c SS |
543 | } |
544 | ||
de57eccd | 545 | /* Try to retrieve registers from a section in core_bfd, and supply |
15244507 PA |
546 | them to m_core_vec->core_read_registers, as the register set |
547 | numbered WHICH. | |
de57eccd | 548 | |
11a33714 SM |
549 | If ptid's lwp member is zero, do the single-threaded |
550 | thing: look for a section named NAME. If ptid's lwp | |
0de3b513 PA |
551 | member is non-zero, do the multi-threaded thing: look for a section |
552 | named "NAME/LWP", where LWP is the shortest ASCII decimal | |
11a33714 | 553 | representation of ptid's lwp member. |
de57eccd JM |
554 | |
555 | HUMAN_NAME is a human-readable name for the kind of registers the | |
556 | NAME section contains, for use in error messages. | |
557 | ||
15244507 PA |
558 | If REQUIRED is true, print an error if the core file doesn't have a |
559 | section by the appropriate name. Otherwise, just do nothing. */ | |
de57eccd | 560 | |
15244507 PA |
561 | void |
562 | core_target::get_core_register_section (struct regcache *regcache, | |
563 | const struct regset *regset, | |
564 | const char *name, | |
dbd534fe | 565 | int section_min_size, |
15244507 PA |
566 | int which, |
567 | const char *human_name, | |
568 | bool required) | |
de57eccd | 569 | { |
7be0c536 | 570 | struct bfd_section *section; |
de57eccd JM |
571 | bfd_size_type size; |
572 | char *contents; | |
874a1c8c AT |
573 | bool variable_size_section = (regset != NULL |
574 | && regset->flags & REGSET_VARIABLE_SIZE); | |
de57eccd | 575 | |
3c3ae77e | 576 | thread_section_name section_name (name, regcache->ptid ()); |
de57eccd | 577 | |
3c3ae77e | 578 | section = bfd_get_section_by_name (core_bfd, section_name.c_str ()); |
de57eccd JM |
579 | if (! section) |
580 | { | |
581 | if (required) | |
aff410f1 MS |
582 | warning (_("Couldn't find %s registers in core file."), |
583 | human_name); | |
de57eccd JM |
584 | return; |
585 | } | |
586 | ||
587 | size = bfd_section_size (core_bfd, section); | |
dbd534fe | 588 | if (size < section_min_size) |
8f0435f7 | 589 | { |
3c3ae77e PA |
590 | warning (_("Section `%s' in core file too small."), |
591 | section_name.c_str ()); | |
8f0435f7 AA |
592 | return; |
593 | } | |
dbd534fe | 594 | if (size != section_min_size && !variable_size_section) |
f962539a AA |
595 | { |
596 | warning (_("Unexpected size of section `%s' in core file."), | |
3c3ae77e | 597 | section_name.c_str ()); |
f962539a | 598 | } |
8f0435f7 | 599 | |
224c3ddb | 600 | contents = (char *) alloca (size); |
de57eccd JM |
601 | if (! bfd_get_section_contents (core_bfd, section, contents, |
602 | (file_ptr) 0, size)) | |
603 | { | |
8a3fe4f8 | 604 | warning (_("Couldn't read %s registers from `%s' section in core file."), |
3c3ae77e | 605 | human_name, section_name.c_str ()); |
de57eccd JM |
606 | return; |
607 | } | |
608 | ||
8f0435f7 AA |
609 | if (regset != NULL) |
610 | { | |
9eefc95f | 611 | regset->supply_regset (regset, regcache, -1, contents, size); |
0e24ac5d MK |
612 | return; |
613 | } | |
614 | ||
15244507 PA |
615 | gdb_assert (m_core_vec != nullptr); |
616 | m_core_vec->core_read_registers (regcache, contents, size, which, | |
617 | ((CORE_ADDR) | |
618 | bfd_section_vma (core_bfd, section))); | |
de57eccd JM |
619 | } |
620 | ||
15244507 PA |
621 | /* Data passed to gdbarch_iterate_over_regset_sections's callback. */ |
622 | struct get_core_registers_cb_data | |
623 | { | |
624 | core_target *target; | |
625 | struct regcache *regcache; | |
626 | }; | |
627 | ||
5aa82d05 AA |
628 | /* Callback for get_core_registers that handles a single core file |
629 | register note section. */ | |
630 | ||
631 | static void | |
a616bb94 | 632 | get_core_registers_cb (const char *sect_name, int supply_size, int collect_size, |
8f0435f7 | 633 | const struct regset *regset, |
5aa82d05 AA |
634 | const char *human_name, void *cb_data) |
635 | { | |
15244507 PA |
636 | auto *data = (get_core_registers_cb_data *) cb_data; |
637 | bool required = false; | |
a616bb94 AH |
638 | bool variable_size_section = (regset != NULL |
639 | && regset->flags & REGSET_VARIABLE_SIZE); | |
640 | ||
641 | if (!variable_size_section) | |
642 | gdb_assert (supply_size == collect_size); | |
5aa82d05 AA |
643 | |
644 | if (strcmp (sect_name, ".reg") == 0) | |
8f0435f7 | 645 | { |
15244507 | 646 | required = true; |
8f0435f7 AA |
647 | if (human_name == NULL) |
648 | human_name = "general-purpose"; | |
649 | } | |
5aa82d05 | 650 | else if (strcmp (sect_name, ".reg2") == 0) |
8f0435f7 AA |
651 | { |
652 | if (human_name == NULL) | |
653 | human_name = "floating-point"; | |
654 | } | |
655 | ||
656 | /* The 'which' parameter is only used when no regset is provided. | |
657 | Thus we just set it to -1. */ | |
15244507 | 658 | data->target->get_core_register_section (data->regcache, regset, sect_name, |
a616bb94 AH |
659 | supply_size, -1, human_name, |
660 | required); | |
5aa82d05 | 661 | } |
de57eccd | 662 | |
c906108c SS |
663 | /* Get the registers out of a core file. This is the machine- |
664 | independent part. Fetch_core_registers is the machine-dependent | |
aff410f1 MS |
665 | part, typically implemented in the xm-file for each |
666 | architecture. */ | |
c906108c SS |
667 | |
668 | /* We just get all the registers, so we don't use regno. */ | |
669 | ||
f6ac5f3d PA |
670 | void |
671 | core_target::fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 672 | { |
9c5ea4d9 | 673 | int i; |
5aa82d05 | 674 | struct gdbarch *gdbarch; |
c906108c | 675 | |
15244507 PA |
676 | if (!(m_core_gdbarch != nullptr |
677 | && gdbarch_iterate_over_regset_sections_p (m_core_gdbarch)) | |
678 | && (m_core_vec == NULL || m_core_vec->core_read_registers == NULL)) | |
c906108c SS |
679 | { |
680 | fprintf_filtered (gdb_stderr, | |
c5aa993b | 681 | "Can't fetch registers from this type of core file\n"); |
c906108c SS |
682 | return; |
683 | } | |
684 | ||
ac7936df | 685 | gdbarch = regcache->arch (); |
5aa82d05 | 686 | if (gdbarch_iterate_over_regset_sections_p (gdbarch)) |
15244507 PA |
687 | { |
688 | get_core_registers_cb_data data = { this, regcache }; | |
689 | gdbarch_iterate_over_regset_sections (gdbarch, | |
690 | get_core_registers_cb, | |
691 | (void *) &data, NULL); | |
692 | } | |
1b1818e4 UW |
693 | else |
694 | { | |
8f0435f7 AA |
695 | get_core_register_section (regcache, NULL, |
696 | ".reg", 0, 0, "general-purpose", 1); | |
697 | get_core_register_section (regcache, NULL, | |
698 | ".reg2", 0, 2, "floating-point", 0); | |
1b1818e4 | 699 | } |
c906108c | 700 | |
ee99023e | 701 | /* Mark all registers not found in the core as unavailable. */ |
ac7936df | 702 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
0ec9f114 | 703 | if (regcache->get_register_status (i) == REG_UNKNOWN) |
73e1c03f | 704 | regcache->raw_supply (i, NULL); |
c906108c SS |
705 | } |
706 | ||
f6ac5f3d PA |
707 | void |
708 | core_target::files_info () | |
c906108c | 709 | { |
15244507 | 710 | print_section_info (&m_core_section_table, core_bfd); |
c906108c | 711 | } |
e2544d02 | 712 | \f |
efcbbd14 UW |
713 | struct spuid_list |
714 | { | |
715 | gdb_byte *buf; | |
716 | ULONGEST offset; | |
717 | LONGEST len; | |
718 | ULONGEST pos; | |
719 | ULONGEST written; | |
720 | }; | |
721 | ||
722 | static void | |
723 | add_to_spuid_list (bfd *abfd, asection *asect, void *list_p) | |
724 | { | |
9a3c8263 | 725 | struct spuid_list *list = (struct spuid_list *) list_p; |
efcbbd14 | 726 | enum bfd_endian byte_order |
aff410f1 | 727 | = bfd_big_endian (abfd) ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; |
efcbbd14 UW |
728 | int fd, pos = 0; |
729 | ||
730 | sscanf (bfd_section_name (abfd, asect), "SPU/%d/regs%n", &fd, &pos); | |
731 | if (pos == 0) | |
732 | return; | |
733 | ||
734 | if (list->pos >= list->offset && list->pos + 4 <= list->offset + list->len) | |
735 | { | |
736 | store_unsigned_integer (list->buf + list->pos - list->offset, | |
737 | 4, byte_order, fd); | |
738 | list->written += 4; | |
739 | } | |
740 | list->pos += 4; | |
741 | } | |
742 | ||
f6ac5f3d PA |
743 | enum target_xfer_status |
744 | core_target::xfer_partial (enum target_object object, const char *annex, | |
745 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
746 | ULONGEST offset, ULONGEST len, ULONGEST *xfered_len) | |
e2544d02 RM |
747 | { |
748 | switch (object) | |
749 | { | |
750 | case TARGET_OBJECT_MEMORY: | |
15244507 PA |
751 | return (section_table_xfer_memory_partial |
752 | (readbuf, writebuf, | |
753 | offset, len, xfered_len, | |
754 | m_core_section_table.sections, | |
755 | m_core_section_table.sections_end, | |
756 | NULL)); | |
e2544d02 RM |
757 | |
758 | case TARGET_OBJECT_AUXV: | |
759 | if (readbuf) | |
760 | { | |
761 | /* When the aux vector is stored in core file, BFD | |
762 | represents this with a fake section called ".auxv". */ | |
763 | ||
c4c5b7ba | 764 | struct bfd_section *section; |
e2544d02 | 765 | bfd_size_type size; |
e2544d02 RM |
766 | |
767 | section = bfd_get_section_by_name (core_bfd, ".auxv"); | |
768 | if (section == NULL) | |
2ed4b548 | 769 | return TARGET_XFER_E_IO; |
e2544d02 RM |
770 | |
771 | size = bfd_section_size (core_bfd, section); | |
772 | if (offset >= size) | |
9b409511 | 773 | return TARGET_XFER_EOF; |
e2544d02 RM |
774 | size -= offset; |
775 | if (size > len) | |
776 | size = len; | |
9b409511 YQ |
777 | |
778 | if (size == 0) | |
779 | return TARGET_XFER_EOF; | |
780 | if (!bfd_get_section_contents (core_bfd, section, readbuf, | |
781 | (file_ptr) offset, size)) | |
e2544d02 | 782 | { |
8a3fe4f8 | 783 | warning (_("Couldn't read NT_AUXV note in core file.")); |
2ed4b548 | 784 | return TARGET_XFER_E_IO; |
e2544d02 RM |
785 | } |
786 | ||
9b409511 YQ |
787 | *xfered_len = (ULONGEST) size; |
788 | return TARGET_XFER_OK; | |
e2544d02 | 789 | } |
2ed4b548 | 790 | return TARGET_XFER_E_IO; |
e2544d02 | 791 | |
403e1656 MK |
792 | case TARGET_OBJECT_WCOOKIE: |
793 | if (readbuf) | |
794 | { | |
795 | /* When the StackGhost cookie is stored in core file, BFD | |
aff410f1 MS |
796 | represents this with a fake section called |
797 | ".wcookie". */ | |
403e1656 MK |
798 | |
799 | struct bfd_section *section; | |
800 | bfd_size_type size; | |
403e1656 MK |
801 | |
802 | section = bfd_get_section_by_name (core_bfd, ".wcookie"); | |
803 | if (section == NULL) | |
2ed4b548 | 804 | return TARGET_XFER_E_IO; |
403e1656 MK |
805 | |
806 | size = bfd_section_size (core_bfd, section); | |
807 | if (offset >= size) | |
96c4f946 | 808 | return TARGET_XFER_EOF; |
403e1656 MK |
809 | size -= offset; |
810 | if (size > len) | |
811 | size = len; | |
9b409511 YQ |
812 | |
813 | if (size == 0) | |
814 | return TARGET_XFER_EOF; | |
815 | if (!bfd_get_section_contents (core_bfd, section, readbuf, | |
816 | (file_ptr) offset, size)) | |
403e1656 | 817 | { |
8a3fe4f8 | 818 | warning (_("Couldn't read StackGhost cookie in core file.")); |
2ed4b548 | 819 | return TARGET_XFER_E_IO; |
403e1656 MK |
820 | } |
821 | ||
9b409511 YQ |
822 | *xfered_len = (ULONGEST) size; |
823 | return TARGET_XFER_OK; | |
824 | ||
403e1656 | 825 | } |
2ed4b548 | 826 | return TARGET_XFER_E_IO; |
403e1656 | 827 | |
de584861 | 828 | case TARGET_OBJECT_LIBRARIES: |
15244507 PA |
829 | if (m_core_gdbarch != nullptr |
830 | && gdbarch_core_xfer_shared_libraries_p (m_core_gdbarch)) | |
de584861 PA |
831 | { |
832 | if (writebuf) | |
2ed4b548 | 833 | return TARGET_XFER_E_IO; |
9b409511 YQ |
834 | else |
835 | { | |
15244507 | 836 | *xfered_len = gdbarch_core_xfer_shared_libraries (m_core_gdbarch, |
9b409511 YQ |
837 | readbuf, |
838 | offset, len); | |
839 | ||
840 | if (*xfered_len == 0) | |
841 | return TARGET_XFER_EOF; | |
842 | else | |
843 | return TARGET_XFER_OK; | |
844 | } | |
de584861 PA |
845 | } |
846 | /* FALL THROUGH */ | |
847 | ||
356a5233 | 848 | case TARGET_OBJECT_LIBRARIES_AIX: |
15244507 PA |
849 | if (m_core_gdbarch != nullptr |
850 | && gdbarch_core_xfer_shared_libraries_aix_p (m_core_gdbarch)) | |
356a5233 JB |
851 | { |
852 | if (writebuf) | |
2ed4b548 | 853 | return TARGET_XFER_E_IO; |
9b409511 YQ |
854 | else |
855 | { | |
856 | *xfered_len | |
15244507 | 857 | = gdbarch_core_xfer_shared_libraries_aix (m_core_gdbarch, |
9b409511 YQ |
858 | readbuf, offset, |
859 | len); | |
860 | ||
861 | if (*xfered_len == 0) | |
862 | return TARGET_XFER_EOF; | |
863 | else | |
864 | return TARGET_XFER_OK; | |
865 | } | |
356a5233 JB |
866 | } |
867 | /* FALL THROUGH */ | |
868 | ||
efcbbd14 UW |
869 | case TARGET_OBJECT_SPU: |
870 | if (readbuf && annex) | |
871 | { | |
872 | /* When the SPU contexts are stored in a core file, BFD | |
aff410f1 MS |
873 | represents this with a fake section called |
874 | "SPU/<annex>". */ | |
efcbbd14 UW |
875 | |
876 | struct bfd_section *section; | |
877 | bfd_size_type size; | |
efcbbd14 | 878 | char sectionstr[100]; |
c5504eaf | 879 | |
efcbbd14 UW |
880 | xsnprintf (sectionstr, sizeof sectionstr, "SPU/%s", annex); |
881 | ||
882 | section = bfd_get_section_by_name (core_bfd, sectionstr); | |
883 | if (section == NULL) | |
2ed4b548 | 884 | return TARGET_XFER_E_IO; |
efcbbd14 UW |
885 | |
886 | size = bfd_section_size (core_bfd, section); | |
887 | if (offset >= size) | |
9b409511 | 888 | return TARGET_XFER_EOF; |
efcbbd14 UW |
889 | size -= offset; |
890 | if (size > len) | |
891 | size = len; | |
9b409511 YQ |
892 | |
893 | if (size == 0) | |
894 | return TARGET_XFER_EOF; | |
895 | if (!bfd_get_section_contents (core_bfd, section, readbuf, | |
896 | (file_ptr) offset, size)) | |
efcbbd14 UW |
897 | { |
898 | warning (_("Couldn't read SPU section in core file.")); | |
2ed4b548 | 899 | return TARGET_XFER_E_IO; |
efcbbd14 UW |
900 | } |
901 | ||
9b409511 YQ |
902 | *xfered_len = (ULONGEST) size; |
903 | return TARGET_XFER_OK; | |
efcbbd14 UW |
904 | } |
905 | else if (readbuf) | |
906 | { | |
907 | /* NULL annex requests list of all present spuids. */ | |
908 | struct spuid_list list; | |
c5504eaf | 909 | |
efcbbd14 UW |
910 | list.buf = readbuf; |
911 | list.offset = offset; | |
912 | list.len = len; | |
913 | list.pos = 0; | |
914 | list.written = 0; | |
915 | bfd_map_over_sections (core_bfd, add_to_spuid_list, &list); | |
9b409511 YQ |
916 | |
917 | if (list.written == 0) | |
918 | return TARGET_XFER_EOF; | |
919 | else | |
920 | { | |
921 | *xfered_len = (ULONGEST) list.written; | |
922 | return TARGET_XFER_OK; | |
923 | } | |
efcbbd14 | 924 | } |
2ed4b548 | 925 | return TARGET_XFER_E_IO; |
efcbbd14 | 926 | |
9015683b TT |
927 | case TARGET_OBJECT_SIGNAL_INFO: |
928 | if (readbuf) | |
9b409511 | 929 | { |
15244507 PA |
930 | if (m_core_gdbarch != nullptr |
931 | && gdbarch_core_xfer_siginfo_p (m_core_gdbarch)) | |
9b409511 | 932 | { |
15244507 | 933 | LONGEST l = gdbarch_core_xfer_siginfo (m_core_gdbarch, readbuf, |
382b69bb JB |
934 | offset, len); |
935 | ||
936 | if (l >= 0) | |
937 | { | |
938 | *xfered_len = l; | |
939 | if (l == 0) | |
940 | return TARGET_XFER_EOF; | |
941 | else | |
942 | return TARGET_XFER_OK; | |
943 | } | |
9b409511 YQ |
944 | } |
945 | } | |
2ed4b548 | 946 | return TARGET_XFER_E_IO; |
9015683b | 947 | |
e2544d02 | 948 | default: |
b6a8c27b PA |
949 | return this->beneath ()->xfer_partial (object, annex, readbuf, |
950 | writebuf, offset, len, | |
951 | xfered_len); | |
e2544d02 RM |
952 | } |
953 | } | |
954 | ||
c906108c | 955 | \f |
c906108c SS |
956 | |
957 | /* Okay, let's be honest: threads gleaned from a core file aren't | |
958 | exactly lively, are they? On the other hand, if we don't claim | |
959 | that each & every one is alive, then we don't get any of them | |
960 | to appear in an "info thread" command, which is quite a useful | |
961 | behaviour. | |
c5aa993b | 962 | */ |
57810aa7 | 963 | bool |
f6ac5f3d | 964 | core_target::thread_alive (ptid_t ptid) |
c906108c | 965 | { |
57810aa7 | 966 | return true; |
c906108c SS |
967 | } |
968 | ||
4eb0ad19 DJ |
969 | /* Ask the current architecture what it knows about this core file. |
970 | That will be used, in turn, to pick a better architecture. This | |
971 | wrapper could be avoided if targets got a chance to specialize | |
15244507 | 972 | core_target. */ |
4eb0ad19 | 973 | |
f6ac5f3d PA |
974 | const struct target_desc * |
975 | core_target::read_description () | |
4eb0ad19 | 976 | { |
15244507 | 977 | if (m_core_gdbarch && gdbarch_core_read_description_p (m_core_gdbarch)) |
2117c711 TT |
978 | { |
979 | const struct target_desc *result; | |
980 | ||
15244507 | 981 | result = gdbarch_core_read_description (m_core_gdbarch, this, core_bfd); |
2117c711 TT |
982 | if (result != NULL) |
983 | return result; | |
984 | } | |
4eb0ad19 | 985 | |
b6a8c27b | 986 | return this->beneath ()->read_description (); |
4eb0ad19 DJ |
987 | } |
988 | ||
f6ac5f3d PA |
989 | const char * |
990 | core_target::pid_to_str (ptid_t ptid) | |
0de3b513 PA |
991 | { |
992 | static char buf[64]; | |
88f38a04 | 993 | struct inferior *inf; |
a5ee0f0c | 994 | int pid; |
0de3b513 | 995 | |
a5ee0f0c PA |
996 | /* The preferred way is to have a gdbarch/OS specific |
997 | implementation. */ | |
15244507 PA |
998 | if (m_core_gdbarch != nullptr |
999 | && gdbarch_core_pid_to_str_p (m_core_gdbarch)) | |
1000 | return gdbarch_core_pid_to_str (m_core_gdbarch, ptid); | |
c5504eaf | 1001 | |
a5ee0f0c PA |
1002 | /* Otherwise, if we don't have one, we'll just fallback to |
1003 | "process", with normal_pid_to_str. */ | |
28439f5e | 1004 | |
a5ee0f0c | 1005 | /* Try the LWPID field first. */ |
e38504b3 | 1006 | pid = ptid.lwp (); |
a5ee0f0c | 1007 | if (pid != 0) |
f2907e49 | 1008 | return normal_pid_to_str (ptid_t (pid)); |
a5ee0f0c PA |
1009 | |
1010 | /* Otherwise, this isn't a "threaded" core -- use the PID field, but | |
1011 | only if it isn't a fake PID. */ | |
c9657e70 | 1012 | inf = find_inferior_ptid (ptid); |
88f38a04 | 1013 | if (inf != NULL && !inf->fake_pid_p) |
a5ee0f0c | 1014 | return normal_pid_to_str (ptid); |
0de3b513 | 1015 | |
a5ee0f0c PA |
1016 | /* No luck. We simply don't have a valid PID to print. */ |
1017 | xsnprintf (buf, sizeof buf, "<main task>"); | |
0de3b513 PA |
1018 | return buf; |
1019 | } | |
1020 | ||
f6ac5f3d PA |
1021 | const char * |
1022 | core_target::thread_name (struct thread_info *thr) | |
4dfc5dbc | 1023 | { |
15244507 PA |
1024 | if (m_core_gdbarch != nullptr |
1025 | && gdbarch_core_thread_name_p (m_core_gdbarch)) | |
1026 | return gdbarch_core_thread_name (m_core_gdbarch, thr); | |
4dfc5dbc JB |
1027 | return NULL; |
1028 | } | |
1029 | ||
57810aa7 | 1030 | bool |
f6ac5f3d | 1031 | core_target::has_memory () |
c35b1492 PA |
1032 | { |
1033 | return (core_bfd != NULL); | |
1034 | } | |
1035 | ||
57810aa7 | 1036 | bool |
f6ac5f3d | 1037 | core_target::has_stack () |
c35b1492 PA |
1038 | { |
1039 | return (core_bfd != NULL); | |
1040 | } | |
1041 | ||
57810aa7 | 1042 | bool |
f6ac5f3d | 1043 | core_target::has_registers () |
c35b1492 PA |
1044 | { |
1045 | return (core_bfd != NULL); | |
1046 | } | |
1047 | ||
451b7c33 TT |
1048 | /* Implement the to_info_proc method. */ |
1049 | ||
f6ac5f3d PA |
1050 | bool |
1051 | core_target::info_proc (const char *args, enum info_proc_what request) | |
451b7c33 TT |
1052 | { |
1053 | struct gdbarch *gdbarch = get_current_arch (); | |
1054 | ||
1055 | /* Since this is the core file target, call the 'core_info_proc' | |
1056 | method on gdbarch, not 'info_proc'. */ | |
1057 | if (gdbarch_core_info_proc_p (gdbarch)) | |
1058 | gdbarch_core_info_proc (gdbarch, args, request); | |
c906108c | 1059 | |
f6ac5f3d | 1060 | return true; |
c906108c SS |
1061 | } |
1062 | ||
c906108c | 1063 | void |
fba45db2 | 1064 | _initialize_corelow (void) |
c906108c | 1065 | { |
d9f719f1 | 1066 | add_target (core_target_info, core_target_open, filename_completer); |
c906108c | 1067 | } |