Commit | Line | Data |
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c906108c | 1 | /* Target-vector operations for controlling Unix child processes, for GDB. |
be4d1333 MS |
2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, |
3 | 2000, 2002 | |
b6ba6518 | 4 | Free Software Foundation, Inc. |
c906108c SS |
5 | Contributed by Cygnus Support. |
6 | ||
c5aa993b | 7 | ## Contains temporary hacks.. |
c906108c | 8 | |
c5aa993b | 9 | This file is part of GDB. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is free software; you can redistribute it and/or modify |
12 | it under the terms of the GNU General Public License as published by | |
13 | the Free Software Foundation; either version 2 of the License, or | |
14 | (at your option) any later version. | |
c906108c | 15 | |
c5aa993b JM |
16 | This program is distributed in the hope that it will be useful, |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
c906108c | 20 | |
c5aa993b JM |
21 | You should have received a copy of the GNU General Public License |
22 | along with this program; if not, write to the Free Software | |
23 | Foundation, Inc., 59 Temple Place - Suite 330, | |
24 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
25 | |
26 | #include "defs.h" | |
c5aa993b | 27 | #include "frame.h" /* required by inferior.h */ |
c906108c SS |
28 | #include "inferior.h" |
29 | #include "target.h" | |
30 | #include "gdbcore.h" | |
31 | #include "command.h" | |
32 | #include "gdb_stat.h" | |
33 | #include <signal.h> | |
34 | #include <sys/types.h> | |
35 | #include <fcntl.h> | |
36 | ||
03f2053f | 37 | #include "gdb_wait.h" |
c906108c | 38 | |
a14ed312 KB |
39 | extern struct symtab_and_line *child_enable_exception_callback (enum |
40 | exception_event_kind, | |
41 | int); | |
c906108c | 42 | |
a14ed312 KB |
43 | extern struct exception_event_record |
44 | *child_get_current_exception_event (void); | |
c906108c | 45 | |
a14ed312 | 46 | extern void _initialize_inftarg (void); |
c906108c | 47 | |
a14ed312 | 48 | static void child_prepare_to_store (void); |
c906108c SS |
49 | |
50 | #ifndef CHILD_WAIT | |
39f77062 | 51 | static ptid_t child_wait (ptid_t, struct target_waitstatus *); |
c906108c SS |
52 | #endif /* CHILD_WAIT */ |
53 | ||
54 | #if !defined(CHILD_POST_WAIT) | |
39f77062 | 55 | void child_post_wait (ptid_t, int); |
c906108c SS |
56 | #endif |
57 | ||
a14ed312 | 58 | static void child_open (char *, int); |
c906108c | 59 | |
a14ed312 | 60 | static void child_files_info (struct target_ops *); |
c906108c | 61 | |
a14ed312 | 62 | static void child_detach (char *, int); |
c906108c | 63 | |
a14ed312 | 64 | static void child_detach_from_process (int, char *, int, int); |
c906108c | 65 | |
a14ed312 | 66 | static void child_attach (char *, int); |
c906108c | 67 | |
a14ed312 | 68 | static void child_attach_to_process (char *, int, int); |
c906108c SS |
69 | |
70 | #if !defined(CHILD_POST_ATTACH) | |
a14ed312 | 71 | extern void child_post_attach (int); |
c906108c SS |
72 | #endif |
73 | ||
a14ed312 | 74 | static void child_require_attach (char *, int); |
c906108c | 75 | |
a14ed312 | 76 | static void child_require_detach (int, char *, int); |
c906108c | 77 | |
a14ed312 | 78 | static void ptrace_me (void); |
c906108c | 79 | |
a14ed312 | 80 | static void ptrace_him (int); |
c906108c | 81 | |
a14ed312 | 82 | static void child_create_inferior (char *, char *, char **); |
c906108c | 83 | |
a14ed312 | 84 | static void child_mourn_inferior (void); |
c906108c | 85 | |
a14ed312 | 86 | static int child_can_run (void); |
c906108c | 87 | |
a14ed312 | 88 | static void child_stop (void); |
c906108c SS |
89 | |
90 | #ifndef CHILD_THREAD_ALIVE | |
39f77062 | 91 | int child_thread_alive (ptid_t); |
c906108c SS |
92 | #endif |
93 | ||
a14ed312 | 94 | static void init_child_ops (void); |
c906108c SS |
95 | |
96 | extern char **environ; | |
97 | ||
98 | struct target_ops child_ops; | |
99 | ||
100 | int child_suppress_run = 0; /* Non-zero if inftarg should pretend not to | |
101 | be a runnable target. Used by targets | |
102 | that can sit atop inftarg, such as HPUX | |
103 | thread support. */ | |
104 | ||
105 | #ifndef CHILD_WAIT | |
106 | ||
c906108c SS |
107 | /* Wait for child to do something. Return pid of child, or -1 in case |
108 | of error; store status through argument pointer OURSTATUS. */ | |
109 | ||
39f77062 KB |
110 | static ptid_t |
111 | child_wait (ptid_t ptid, struct target_waitstatus *ourstatus) | |
c906108c SS |
112 | { |
113 | int save_errno; | |
114 | int status; | |
7a292a7a | 115 | char *execd_pathname = NULL; |
c5aa993b JM |
116 | int exit_status; |
117 | int related_pid; | |
118 | int syscall_id; | |
119 | enum target_waitkind kind; | |
39f77062 | 120 | int pid; |
c906108c | 121 | |
c5aa993b JM |
122 | do |
123 | { | |
124 | set_sigint_trap (); /* Causes SIGINT to be passed on to the | |
125 | attached process. */ | |
126 | set_sigio_trap (); | |
c906108c | 127 | |
39f77062 | 128 | pid = ptrace_wait (inferior_ptid, &status); |
c906108c | 129 | |
c5aa993b | 130 | save_errno = errno; |
c906108c | 131 | |
c5aa993b | 132 | clear_sigio_trap (); |
c906108c | 133 | |
c5aa993b | 134 | clear_sigint_trap (); |
c906108c | 135 | |
c5aa993b JM |
136 | if (pid == -1) |
137 | { | |
138 | if (save_errno == EINTR) | |
139 | continue; | |
c906108c | 140 | |
c5aa993b JM |
141 | fprintf_unfiltered (gdb_stderr, "Child process unexpectedly missing: %s.\n", |
142 | safe_strerror (save_errno)); | |
c906108c | 143 | |
c5aa993b JM |
144 | /* Claim it exited with unknown signal. */ |
145 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
146 | ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN; | |
39f77062 | 147 | return pid_to_ptid (-1); |
c5aa993b | 148 | } |
c906108c | 149 | |
c5aa993b | 150 | /* Did it exit? |
c906108c | 151 | */ |
c5aa993b JM |
152 | if (target_has_exited (pid, status, &exit_status)) |
153 | { | |
154 | /* ??rehrauer: For now, ignore this. */ | |
155 | continue; | |
156 | } | |
157 | ||
39f77062 | 158 | if (!target_thread_alive (pid_to_ptid (pid))) |
c5aa993b JM |
159 | { |
160 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; | |
39f77062 | 161 | return pid_to_ptid (pid); |
c5aa993b | 162 | } |
47932f85 | 163 | } while (pid != PIDGET (inferior_ptid)); /* Some other child died or stopped */ |
c906108c SS |
164 | |
165 | store_waitstatus (ourstatus, status); | |
39f77062 | 166 | return pid_to_ptid (pid); |
c906108c SS |
167 | } |
168 | #endif /* CHILD_WAIT */ | |
169 | ||
170 | #if !defined(CHILD_POST_WAIT) | |
171 | void | |
39f77062 | 172 | child_post_wait (ptid_t ptid, int wait_status) |
c906108c SS |
173 | { |
174 | /* This version of Unix doesn't require a meaningful "post wait" | |
175 | operation. | |
c5aa993b | 176 | */ |
c906108c SS |
177 | } |
178 | #endif | |
c5aa993b | 179 | |
c906108c SS |
180 | |
181 | #ifndef CHILD_THREAD_ALIVE | |
182 | ||
183 | /* Check to see if the given thread is alive. | |
184 | ||
185 | FIXME: Is kill() ever the right way to do this? I doubt it, but | |
186 | for now we're going to try and be compatable with the old thread | |
187 | code. */ | |
188 | int | |
39f77062 | 189 | child_thread_alive (ptid_t ptid) |
c906108c | 190 | { |
39f77062 KB |
191 | pid_t pid = PIDGET (ptid); |
192 | ||
c906108c SS |
193 | return (kill (pid, 0) != -1); |
194 | } | |
195 | ||
196 | #endif | |
197 | ||
198 | static void | |
fba45db2 | 199 | child_attach_to_process (char *args, int from_tty, int after_fork) |
c906108c SS |
200 | { |
201 | if (!args) | |
202 | error_no_arg ("process-id to attach"); | |
203 | ||
204 | #ifndef ATTACH_DETACH | |
205 | error ("Can't attach to a process on this machine."); | |
206 | #else | |
207 | { | |
208 | char *exec_file; | |
209 | int pid; | |
210 | char *dummy; | |
211 | ||
212 | dummy = args; | |
213 | pid = strtol (args, &dummy, 0); | |
214 | /* Some targets don't set errno on errors, grrr! */ | |
215 | if ((pid == 0) && (args == dummy)) | |
216 | error ("Illegal process-id: %s\n", args); | |
217 | ||
c5aa993b | 218 | if (pid == getpid ()) /* Trying to masturbate? */ |
c906108c SS |
219 | error ("I refuse to debug myself!"); |
220 | ||
221 | if (from_tty) | |
222 | { | |
223 | exec_file = (char *) get_exec_file (0); | |
224 | ||
225 | if (after_fork) | |
c5aa993b | 226 | printf_unfiltered ("Attaching after fork to %s\n", |
39f77062 | 227 | target_pid_to_str (pid_to_ptid (pid))); |
c906108c SS |
228 | else if (exec_file) |
229 | printf_unfiltered ("Attaching to program: %s, %s\n", exec_file, | |
39f77062 | 230 | target_pid_to_str (pid_to_ptid (pid))); |
c5aa993b | 231 | else |
39f77062 KB |
232 | printf_unfiltered ("Attaching to %s\n", |
233 | target_pid_to_str (pid_to_ptid (pid))); | |
c906108c SS |
234 | |
235 | gdb_flush (gdb_stdout); | |
236 | } | |
237 | ||
238 | if (!after_fork) | |
239 | attach (pid); | |
240 | else | |
241 | REQUIRE_ATTACH (pid); | |
242 | ||
39f77062 | 243 | inferior_ptid = pid_to_ptid (pid); |
c906108c SS |
244 | push_target (&child_ops); |
245 | } | |
c5aa993b | 246 | #endif /* ATTACH_DETACH */ |
c906108c SS |
247 | } |
248 | ||
249 | ||
250 | /* Attach to process PID, then initialize for debugging it. */ | |
251 | ||
252 | static void | |
fba45db2 | 253 | child_attach (char *args, int from_tty) |
c906108c SS |
254 | { |
255 | child_attach_to_process (args, from_tty, 0); | |
256 | } | |
257 | ||
258 | #if !defined(CHILD_POST_ATTACH) | |
259 | void | |
fba45db2 | 260 | child_post_attach (int pid) |
c906108c SS |
261 | { |
262 | /* This version of Unix doesn't require a meaningful "post attach" | |
263 | operation by a debugger. */ | |
264 | } | |
265 | #endif | |
266 | ||
267 | static void | |
fba45db2 | 268 | child_require_attach (char *args, int from_tty) |
c906108c SS |
269 | { |
270 | child_attach_to_process (args, from_tty, 1); | |
c5aa993b | 271 | } |
c906108c SS |
272 | |
273 | static void | |
fba45db2 | 274 | child_detach_from_process (int pid, char *args, int from_tty, int after_fork) |
c906108c SS |
275 | { |
276 | #ifdef ATTACH_DETACH | |
277 | { | |
278 | int siggnal = 0; | |
279 | ||
280 | if (from_tty) | |
281 | { | |
282 | char *exec_file = get_exec_file (0); | |
283 | if (exec_file == 0) | |
284 | exec_file = ""; | |
c5aa993b JM |
285 | if (after_fork) |
286 | printf_unfiltered ("Detaching after fork from %s\n", | |
39f77062 | 287 | target_pid_to_str (pid_to_ptid (pid))); |
c5aa993b | 288 | else |
c906108c | 289 | printf_unfiltered ("Detaching from program: %s, %s\n", exec_file, |
39f77062 | 290 | target_pid_to_str (pid_to_ptid (pid))); |
c906108c SS |
291 | gdb_flush (gdb_stdout); |
292 | } | |
293 | if (args) | |
294 | siggnal = atoi (args); | |
295 | ||
296 | if (!after_fork) | |
297 | detach (siggnal); | |
298 | else | |
299 | REQUIRE_DETACH (pid, siggnal); | |
300 | } | |
301 | #else | |
302 | error ("This version of Unix does not support detaching a process."); | |
303 | #endif | |
304 | } | |
305 | ||
306 | /* Take a program previously attached to and detaches it. | |
307 | The program resumes execution and will no longer stop | |
308 | on signals, etc. We'd better not have left any breakpoints | |
309 | in the program or it'll die when it hits one. For this | |
310 | to work, it may be necessary for the process to have been | |
311 | previously attached. It *might* work if the program was | |
312 | started via the normal ptrace (PTRACE_TRACEME). */ | |
313 | ||
314 | static void | |
fba45db2 | 315 | child_detach (char *args, int from_tty) |
c906108c | 316 | { |
39f77062 KB |
317 | child_detach_from_process (PIDGET (inferior_ptid), args, from_tty, 0); |
318 | inferior_ptid = null_ptid; | |
c906108c SS |
319 | unpush_target (&child_ops); |
320 | } | |
321 | ||
322 | static void | |
fba45db2 | 323 | child_require_detach (int pid, char *args, int from_tty) |
c906108c SS |
324 | { |
325 | child_detach_from_process (pid, args, from_tty, 1); | |
326 | } | |
327 | ||
328 | ||
329 | /* Get ready to modify the registers array. On machines which store | |
330 | individual registers, this doesn't need to do anything. On machines | |
331 | which store all the registers in one fell swoop, this makes sure | |
332 | that registers contains all the registers from the program being | |
333 | debugged. */ | |
334 | ||
335 | static void | |
fba45db2 | 336 | child_prepare_to_store (void) |
c906108c SS |
337 | { |
338 | #ifdef CHILD_PREPARE_TO_STORE | |
339 | CHILD_PREPARE_TO_STORE (); | |
340 | #endif | |
341 | } | |
342 | ||
343 | /* Print status information about what we're accessing. */ | |
344 | ||
345 | static void | |
fba45db2 | 346 | child_files_info (struct target_ops *ignore) |
c906108c SS |
347 | { |
348 | printf_unfiltered ("\tUsing the running image of %s %s.\n", | |
39f77062 | 349 | attach_flag ? "attached" : "child", target_pid_to_str (inferior_ptid)); |
c906108c SS |
350 | } |
351 | ||
352 | /* ARGSUSED */ | |
353 | static void | |
fba45db2 | 354 | child_open (char *arg, int from_tty) |
c906108c SS |
355 | { |
356 | error ("Use the \"run\" command to start a Unix child process."); | |
357 | } | |
358 | ||
359 | /* Stub function which causes the inferior that runs it, to be ptrace-able | |
360 | by its parent process. */ | |
361 | ||
362 | static void | |
fba45db2 | 363 | ptrace_me (void) |
c906108c SS |
364 | { |
365 | /* "Trace me, Dr. Memory!" */ | |
366 | call_ptrace (0, 0, (PTRACE_ARG3_TYPE) 0, 0); | |
367 | } | |
368 | ||
369 | /* Stub function which causes the GDB that runs it, to start ptrace-ing | |
370 | the child process. */ | |
371 | ||
c5aa993b | 372 | static void |
fba45db2 | 373 | ptrace_him (int pid) |
c906108c SS |
374 | { |
375 | push_target (&child_ops); | |
376 | ||
377 | /* On some targets, there must be some explicit synchronization | |
378 | between the parent and child processes after the debugger | |
379 | forks, and before the child execs the debuggee program. This | |
380 | call basically gives permission for the child to exec. | |
c5aa993b | 381 | */ |
c906108c SS |
382 | |
383 | target_acknowledge_created_inferior (pid); | |
384 | ||
385 | /* START_INFERIOR_TRAPS_EXPECTED is defined in inferior.h, | |
386 | * and will be 1 or 2 depending on whether we're starting | |
387 | * without or with a shell. | |
388 | */ | |
389 | startup_inferior (START_INFERIOR_TRAPS_EXPECTED); | |
390 | ||
391 | /* On some targets, there must be some explicit actions taken after | |
392 | the inferior has been started up. | |
c5aa993b | 393 | */ |
39f77062 | 394 | target_post_startup_inferior (pid_to_ptid (pid)); |
c906108c SS |
395 | } |
396 | ||
39f77062 | 397 | /* Start an inferior Unix child process and sets inferior_ptid to its pid. |
c906108c SS |
398 | EXEC_FILE is the file to run. |
399 | ALLARGS is a string containing the arguments to the program. | |
400 | ENV is the environment vector to pass. Errors reported with error(). */ | |
401 | ||
402 | static void | |
fba45db2 | 403 | child_create_inferior (char *exec_file, char *allargs, char **env) |
c906108c | 404 | { |
c906108c | 405 | #ifdef HPUXHPPA |
c906108c SS |
406 | fork_inferior (exec_file, allargs, env, ptrace_me, ptrace_him, pre_fork_inferior, NULL); |
407 | #else | |
c5aa993b | 408 | fork_inferior (exec_file, allargs, env, ptrace_me, ptrace_him, NULL, NULL); |
c906108c SS |
409 | #endif |
410 | /* We are at the first instruction we care about. */ | |
411 | /* Pedal to the metal... */ | |
2acceee2 | 412 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_0, 0); |
c906108c SS |
413 | } |
414 | ||
415 | #if !defined(CHILD_POST_STARTUP_INFERIOR) | |
416 | void | |
39f77062 | 417 | child_post_startup_inferior (ptid_t ptid) |
c906108c SS |
418 | { |
419 | /* This version of Unix doesn't require a meaningful "post startup inferior" | |
420 | operation by a debugger. | |
c5aa993b | 421 | */ |
c906108c SS |
422 | } |
423 | #endif | |
424 | ||
425 | #if !defined(CHILD_ACKNOWLEDGE_CREATED_INFERIOR) | |
426 | void | |
fba45db2 | 427 | child_acknowledge_created_inferior (int pid) |
c906108c SS |
428 | { |
429 | /* This version of Unix doesn't require a meaningful "acknowledge created inferior" | |
430 | operation by a debugger. | |
c5aa993b | 431 | */ |
c906108c SS |
432 | } |
433 | #endif | |
434 | ||
435 | ||
c906108c SS |
436 | #if !defined(CHILD_INSERT_FORK_CATCHPOINT) |
437 | int | |
fba45db2 | 438 | child_insert_fork_catchpoint (int pid) |
c906108c SS |
439 | { |
440 | /* This version of Unix doesn't support notification of fork events. */ | |
441 | return 0; | |
442 | } | |
443 | #endif | |
444 | ||
445 | #if !defined(CHILD_REMOVE_FORK_CATCHPOINT) | |
446 | int | |
fba45db2 | 447 | child_remove_fork_catchpoint (int pid) |
c906108c SS |
448 | { |
449 | /* This version of Unix doesn't support notification of fork events. */ | |
450 | return 0; | |
451 | } | |
452 | #endif | |
453 | ||
454 | #if !defined(CHILD_INSERT_VFORK_CATCHPOINT) | |
455 | int | |
fba45db2 | 456 | child_insert_vfork_catchpoint (int pid) |
c906108c SS |
457 | { |
458 | /* This version of Unix doesn't support notification of vfork events. */ | |
459 | return 0; | |
460 | } | |
461 | #endif | |
462 | ||
463 | #if !defined(CHILD_REMOVE_VFORK_CATCHPOINT) | |
464 | int | |
fba45db2 | 465 | child_remove_vfork_catchpoint (int pid) |
c906108c SS |
466 | { |
467 | /* This version of Unix doesn't support notification of vfork events. */ | |
468 | return 0; | |
469 | } | |
470 | #endif | |
471 | ||
c906108c SS |
472 | #if !defined(CHILD_POST_FOLLOW_VFORK) |
473 | void | |
fba45db2 KB |
474 | child_post_follow_vfork (int parent_pid, int followed_parent, int child_pid, |
475 | int followed_child) | |
c906108c SS |
476 | { |
477 | /* This version of Unix doesn't require a meaningful "post follow vfork" | |
478 | operation by a clone debugger. | |
c5aa993b | 479 | */ |
c906108c SS |
480 | } |
481 | #endif | |
482 | ||
483 | #if !defined(CHILD_INSERT_EXEC_CATCHPOINT) | |
484 | int | |
fba45db2 | 485 | child_insert_exec_catchpoint (int pid) |
c906108c SS |
486 | { |
487 | /* This version of Unix doesn't support notification of exec events. */ | |
488 | return 0; | |
489 | } | |
490 | #endif | |
491 | ||
492 | #if !defined(CHILD_REMOVE_EXEC_CATCHPOINT) | |
493 | int | |
fba45db2 | 494 | child_remove_exec_catchpoint (int pid) |
c906108c SS |
495 | { |
496 | /* This version of Unix doesn't support notification of exec events. */ | |
497 | return 0; | |
498 | } | |
499 | #endif | |
500 | ||
c906108c SS |
501 | #if !defined(CHILD_REPORTED_EXEC_EVENTS_PER_EXEC_CALL) |
502 | int | |
fba45db2 | 503 | child_reported_exec_events_per_exec_call (void) |
c906108c SS |
504 | { |
505 | /* This version of Unix doesn't support notification of exec events. | |
c5aa993b | 506 | */ |
c906108c SS |
507 | return 1; |
508 | } | |
509 | #endif | |
510 | ||
c906108c SS |
511 | #if !defined(CHILD_HAS_EXITED) |
512 | int | |
fba45db2 | 513 | child_has_exited (int pid, int wait_status, int *exit_status) |
c906108c SS |
514 | { |
515 | if (WIFEXITED (wait_status)) | |
516 | { | |
517 | *exit_status = WEXITSTATUS (wait_status); | |
518 | return 1; | |
519 | } | |
520 | ||
521 | if (WIFSIGNALED (wait_status)) | |
522 | { | |
c5aa993b | 523 | *exit_status = 0; /* ?? Don't know what else to say here. */ |
c906108c SS |
524 | return 1; |
525 | } | |
526 | ||
527 | /* ?? Do we really need to consult the event state, too? Assume the | |
c5aa993b | 528 | wait_state alone suffices. |
c906108c SS |
529 | */ |
530 | return 0; | |
531 | } | |
532 | #endif | |
533 | ||
534 | ||
535 | static void | |
fba45db2 | 536 | child_mourn_inferior (void) |
c906108c | 537 | { |
c906108c | 538 | unpush_target (&child_ops); |
c906108c SS |
539 | generic_mourn_inferior (); |
540 | } | |
541 | ||
542 | static int | |
fba45db2 | 543 | child_can_run (void) |
c906108c SS |
544 | { |
545 | /* This variable is controlled by modules that sit atop inftarg that may layer | |
546 | their own process structure atop that provided here. hpux-thread.c does | |
547 | this because of the Hpux user-mode level thread model. */ | |
548 | ||
549 | return !child_suppress_run; | |
550 | } | |
551 | ||
552 | /* Send a SIGINT to the process group. This acts just like the user typed a | |
553 | ^C on the controlling terminal. | |
554 | ||
555 | XXX - This may not be correct for all systems. Some may want to use | |
556 | killpg() instead of kill (-pgrp). */ | |
557 | ||
558 | static void | |
fba45db2 | 559 | child_stop (void) |
c906108c SS |
560 | { |
561 | extern pid_t inferior_process_group; | |
562 | ||
563 | kill (-inferior_process_group, SIGINT); | |
564 | } | |
565 | ||
566 | #if !defined(CHILD_ENABLE_EXCEPTION_CALLBACK) | |
567 | struct symtab_and_line * | |
fba45db2 | 568 | child_enable_exception_callback (enum exception_event_kind kind, int enable) |
c906108c SS |
569 | { |
570 | return (struct symtab_and_line *) NULL; | |
571 | } | |
572 | #endif | |
573 | ||
574 | #if !defined(CHILD_GET_CURRENT_EXCEPTION_EVENT) | |
575 | struct exception_event_record * | |
fba45db2 | 576 | child_get_current_exception_event (void) |
c906108c SS |
577 | { |
578 | return (struct exception_event_record *) NULL; | |
579 | } | |
580 | #endif | |
581 | ||
582 | ||
583 | #if !defined(CHILD_PID_TO_EXEC_FILE) | |
584 | char * | |
fba45db2 | 585 | child_pid_to_exec_file (int pid) |
c906108c SS |
586 | { |
587 | /* This version of Unix doesn't support translation of a process ID | |
588 | to the filename of the executable file. | |
c5aa993b | 589 | */ |
c906108c SS |
590 | return NULL; |
591 | } | |
592 | #endif | |
593 | ||
594 | char * | |
fba45db2 | 595 | child_core_file_to_sym_file (char *core) |
c906108c SS |
596 | { |
597 | /* The target stratum for a running executable need not support | |
598 | this operation. | |
c5aa993b | 599 | */ |
c906108c SS |
600 | return NULL; |
601 | } | |
c5aa993b | 602 | \f |
c906108c | 603 | |
ed9a39eb JM |
604 | #if !defined(CHILD_PID_TO_STR) |
605 | char * | |
39f77062 | 606 | child_pid_to_str (ptid_t ptid) |
ed9a39eb | 607 | { |
39f77062 | 608 | return normal_pid_to_str (ptid); |
ed9a39eb JM |
609 | } |
610 | #endif | |
c906108c | 611 | |
c906108c | 612 | static void |
fba45db2 | 613 | init_child_ops (void) |
c906108c SS |
614 | { |
615 | child_ops.to_shortname = "child"; | |
616 | child_ops.to_longname = "Unix child process"; | |
617 | child_ops.to_doc = "Unix child process (started by the \"run\" command)."; | |
618 | child_ops.to_open = child_open; | |
619 | child_ops.to_attach = child_attach; | |
620 | child_ops.to_post_attach = child_post_attach; | |
621 | child_ops.to_require_attach = child_require_attach; | |
622 | child_ops.to_detach = child_detach; | |
623 | child_ops.to_require_detach = child_require_detach; | |
624 | child_ops.to_resume = child_resume; | |
625 | child_ops.to_wait = child_wait; | |
626 | child_ops.to_post_wait = child_post_wait; | |
627 | child_ops.to_fetch_registers = fetch_inferior_registers; | |
628 | child_ops.to_store_registers = store_inferior_registers; | |
629 | child_ops.to_prepare_to_store = child_prepare_to_store; | |
630 | child_ops.to_xfer_memory = child_xfer_memory; | |
631 | child_ops.to_files_info = child_files_info; | |
632 | child_ops.to_insert_breakpoint = memory_insert_breakpoint; | |
633 | child_ops.to_remove_breakpoint = memory_remove_breakpoint; | |
634 | child_ops.to_terminal_init = terminal_init_inferior; | |
635 | child_ops.to_terminal_inferior = terminal_inferior; | |
636 | child_ops.to_terminal_ours_for_output = terminal_ours_for_output; | |
a790ad35 | 637 | child_ops.to_terminal_save_ours = terminal_save_ours; |
c906108c SS |
638 | child_ops.to_terminal_ours = terminal_ours; |
639 | child_ops.to_terminal_info = child_terminal_info; | |
640 | child_ops.to_kill = kill_inferior; | |
641 | child_ops.to_create_inferior = child_create_inferior; | |
642 | child_ops.to_post_startup_inferior = child_post_startup_inferior; | |
643 | child_ops.to_acknowledge_created_inferior = child_acknowledge_created_inferior; | |
c906108c SS |
644 | child_ops.to_insert_fork_catchpoint = child_insert_fork_catchpoint; |
645 | child_ops.to_remove_fork_catchpoint = child_remove_fork_catchpoint; | |
646 | child_ops.to_insert_vfork_catchpoint = child_insert_vfork_catchpoint; | |
647 | child_ops.to_remove_vfork_catchpoint = child_remove_vfork_catchpoint; | |
c906108c SS |
648 | child_ops.to_post_follow_vfork = child_post_follow_vfork; |
649 | child_ops.to_insert_exec_catchpoint = child_insert_exec_catchpoint; | |
650 | child_ops.to_remove_exec_catchpoint = child_remove_exec_catchpoint; | |
c906108c | 651 | child_ops.to_reported_exec_events_per_exec_call = child_reported_exec_events_per_exec_call; |
c906108c SS |
652 | child_ops.to_has_exited = child_has_exited; |
653 | child_ops.to_mourn_inferior = child_mourn_inferior; | |
654 | child_ops.to_can_run = child_can_run; | |
655 | child_ops.to_thread_alive = child_thread_alive; | |
ed9a39eb | 656 | child_ops.to_pid_to_str = child_pid_to_str; |
c906108c SS |
657 | child_ops.to_stop = child_stop; |
658 | child_ops.to_enable_exception_callback = child_enable_exception_callback; | |
659 | child_ops.to_get_current_exception_event = child_get_current_exception_event; | |
660 | child_ops.to_pid_to_exec_file = child_pid_to_exec_file; | |
c906108c SS |
661 | child_ops.to_stratum = process_stratum; |
662 | child_ops.to_has_all_memory = 1; | |
663 | child_ops.to_has_memory = 1; | |
664 | child_ops.to_has_stack = 1; | |
665 | child_ops.to_has_registers = 1; | |
666 | child_ops.to_has_execution = 1; | |
667 | child_ops.to_magic = OPS_MAGIC; | |
668 | } | |
669 | ||
be4d1333 MS |
670 | /* Take over the 'find_mapped_memory' vector from inftarg.c. */ |
671 | extern void | |
672 | inftarg_set_find_memory_regions (int (*func) (int (*) (CORE_ADDR, | |
673 | unsigned long, | |
674 | int, int, int, | |
675 | void *), | |
676 | void *)) | |
677 | { | |
678 | child_ops.to_find_memory_regions = func; | |
679 | } | |
680 | ||
681 | /* Take over the 'make_corefile_notes' vector from inftarg.c. */ | |
682 | extern void | |
683 | inftarg_set_make_corefile_notes (char * (*func) (bfd *, int *)) | |
684 | { | |
685 | child_ops.to_make_corefile_notes = func; | |
686 | } | |
687 | ||
c906108c | 688 | void |
fba45db2 | 689 | _initialize_inftarg (void) |
c906108c SS |
690 | { |
691 | #ifdef HAVE_OPTIONAL_PROC_FS | |
692 | char procname[32]; | |
693 | int fd; | |
694 | ||
695 | /* If we have an optional /proc filesystem (e.g. under OSF/1), | |
696 | don't add ptrace support if we can access the running GDB via /proc. */ | |
697 | #ifndef PROC_NAME_FMT | |
698 | #define PROC_NAME_FMT "/proc/%05d" | |
699 | #endif | |
700 | sprintf (procname, PROC_NAME_FMT, getpid ()); | |
701 | if ((fd = open (procname, O_RDONLY)) >= 0) | |
702 | { | |
703 | close (fd); | |
704 | return; | |
705 | } | |
706 | #endif | |
707 | ||
708 | init_child_ops (); | |
709 | add_target (&child_ops); | |
710 | } |