Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Target-vector operations for controlling Unix child processes, for GDB. |
1bac305b AC |
2 | |
3 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, | |
baf92889 | 4 | 2000, 2002, 2003, 2004 Free Software Foundation, Inc. |
1bac305b | 5 | |
c906108c SS |
6 | Contributed by Cygnus Support. |
7 | ||
c5aa993b | 8 | ## Contains temporary hacks.. |
c906108c | 9 | |
c5aa993b | 10 | This file is part of GDB. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is free software; you can redistribute it and/or modify |
13 | it under the terms of the GNU General Public License as published by | |
14 | the Free Software Foundation; either version 2 of the License, or | |
15 | (at your option) any later version. | |
c906108c | 16 | |
c5aa993b JM |
17 | This program is distributed in the hope that it will be useful, |
18 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | GNU General Public License for more details. | |
c906108c | 21 | |
c5aa993b JM |
22 | You should have received a copy of the GNU General Public License |
23 | along with this program; if not, write to the Free Software | |
24 | Foundation, Inc., 59 Temple Place - Suite 330, | |
25 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
26 | |
27 | #include "defs.h" | |
c5aa993b | 28 | #include "frame.h" /* required by inferior.h */ |
c906108c SS |
29 | #include "inferior.h" |
30 | #include "target.h" | |
31 | #include "gdbcore.h" | |
32 | #include "command.h" | |
33 | #include "gdb_stat.h" | |
34 | #include <signal.h> | |
35 | #include <sys/types.h> | |
36 | #include <fcntl.h> | |
20d2ca3e | 37 | #include "observer.h" |
03f2053f | 38 | #include "gdb_wait.h" |
44270758 | 39 | #include "inflow.h" |
c906108c | 40 | |
a14ed312 KB |
41 | extern struct symtab_and_line *child_enable_exception_callback (enum |
42 | exception_event_kind, | |
43 | int); | |
c906108c | 44 | |
a14ed312 KB |
45 | extern struct exception_event_record |
46 | *child_get_current_exception_event (void); | |
c906108c | 47 | |
a14ed312 | 48 | extern void _initialize_inftarg (void); |
c906108c | 49 | |
a14ed312 | 50 | static void child_prepare_to_store (void); |
c906108c SS |
51 | |
52 | #ifndef CHILD_WAIT | |
39f77062 | 53 | static ptid_t child_wait (ptid_t, struct target_waitstatus *); |
c906108c SS |
54 | #endif /* CHILD_WAIT */ |
55 | ||
56 | #if !defined(CHILD_POST_WAIT) | |
39f77062 | 57 | void child_post_wait (ptid_t, int); |
c906108c SS |
58 | #endif |
59 | ||
a14ed312 | 60 | static void child_open (char *, int); |
c906108c | 61 | |
a14ed312 | 62 | static void child_files_info (struct target_ops *); |
c906108c | 63 | |
a14ed312 | 64 | static void child_detach (char *, int); |
c906108c | 65 | |
a14ed312 | 66 | static void child_attach (char *, int); |
c906108c | 67 | |
c906108c | 68 | #if !defined(CHILD_POST_ATTACH) |
a14ed312 | 69 | extern void child_post_attach (int); |
c906108c SS |
70 | #endif |
71 | ||
a14ed312 | 72 | static void ptrace_me (void); |
c906108c | 73 | |
a14ed312 | 74 | static void ptrace_him (int); |
c906108c | 75 | |
c27cda74 | 76 | static void child_create_inferior (char *, char *, char **, int); |
c906108c | 77 | |
a14ed312 | 78 | static void child_mourn_inferior (void); |
c906108c | 79 | |
a14ed312 | 80 | static int child_can_run (void); |
c906108c | 81 | |
a14ed312 | 82 | static void child_stop (void); |
c906108c SS |
83 | |
84 | #ifndef CHILD_THREAD_ALIVE | |
39f77062 | 85 | int child_thread_alive (ptid_t); |
c906108c SS |
86 | #endif |
87 | ||
a14ed312 | 88 | static void init_child_ops (void); |
c906108c SS |
89 | |
90 | extern char **environ; | |
91 | ||
92 | struct target_ops child_ops; | |
93 | ||
94 | int child_suppress_run = 0; /* Non-zero if inftarg should pretend not to | |
95 | be a runnable target. Used by targets | |
96 | that can sit atop inftarg, such as HPUX | |
97 | thread support. */ | |
98 | ||
99 | #ifndef CHILD_WAIT | |
100 | ||
c906108c SS |
101 | /* Wait for child to do something. Return pid of child, or -1 in case |
102 | of error; store status through argument pointer OURSTATUS. */ | |
103 | ||
39f77062 KB |
104 | static ptid_t |
105 | child_wait (ptid_t ptid, struct target_waitstatus *ourstatus) | |
c906108c SS |
106 | { |
107 | int save_errno; | |
108 | int status; | |
7a292a7a | 109 | char *execd_pathname = NULL; |
c5aa993b JM |
110 | int exit_status; |
111 | int related_pid; | |
112 | int syscall_id; | |
113 | enum target_waitkind kind; | |
39f77062 | 114 | int pid; |
c906108c | 115 | |
c5aa993b JM |
116 | do |
117 | { | |
118 | set_sigint_trap (); /* Causes SIGINT to be passed on to the | |
119 | attached process. */ | |
120 | set_sigio_trap (); | |
c906108c | 121 | |
39f77062 | 122 | pid = ptrace_wait (inferior_ptid, &status); |
c906108c | 123 | |
c5aa993b | 124 | save_errno = errno; |
c906108c | 125 | |
c5aa993b | 126 | clear_sigio_trap (); |
c906108c | 127 | |
c5aa993b | 128 | clear_sigint_trap (); |
c906108c | 129 | |
c5aa993b JM |
130 | if (pid == -1) |
131 | { | |
132 | if (save_errno == EINTR) | |
133 | continue; | |
c906108c | 134 | |
c5aa993b JM |
135 | fprintf_unfiltered (gdb_stderr, "Child process unexpectedly missing: %s.\n", |
136 | safe_strerror (save_errno)); | |
c906108c | 137 | |
c5aa993b JM |
138 | /* Claim it exited with unknown signal. */ |
139 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
140 | ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN; | |
39f77062 | 141 | return pid_to_ptid (-1); |
c5aa993b | 142 | } |
c906108c | 143 | |
c5aa993b | 144 | /* Did it exit? |
c906108c | 145 | */ |
c5aa993b JM |
146 | if (target_has_exited (pid, status, &exit_status)) |
147 | { | |
148 | /* ??rehrauer: For now, ignore this. */ | |
149 | continue; | |
150 | } | |
151 | ||
39f77062 | 152 | if (!target_thread_alive (pid_to_ptid (pid))) |
c5aa993b JM |
153 | { |
154 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; | |
39f77062 | 155 | return pid_to_ptid (pid); |
c5aa993b | 156 | } |
47932f85 | 157 | } while (pid != PIDGET (inferior_ptid)); /* Some other child died or stopped */ |
c906108c SS |
158 | |
159 | store_waitstatus (ourstatus, status); | |
39f77062 | 160 | return pid_to_ptid (pid); |
c906108c SS |
161 | } |
162 | #endif /* CHILD_WAIT */ | |
163 | ||
164 | #if !defined(CHILD_POST_WAIT) | |
165 | void | |
39f77062 | 166 | child_post_wait (ptid_t ptid, int wait_status) |
c906108c SS |
167 | { |
168 | /* This version of Unix doesn't require a meaningful "post wait" | |
169 | operation. | |
c5aa993b | 170 | */ |
c906108c SS |
171 | } |
172 | #endif | |
c5aa993b | 173 | |
c906108c SS |
174 | |
175 | #ifndef CHILD_THREAD_ALIVE | |
176 | ||
177 | /* Check to see if the given thread is alive. | |
178 | ||
179 | FIXME: Is kill() ever the right way to do this? I doubt it, but | |
180 | for now we're going to try and be compatable with the old thread | |
181 | code. */ | |
182 | int | |
39f77062 | 183 | child_thread_alive (ptid_t ptid) |
c906108c | 184 | { |
39f77062 KB |
185 | pid_t pid = PIDGET (ptid); |
186 | ||
c906108c SS |
187 | return (kill (pid, 0) != -1); |
188 | } | |
189 | ||
190 | #endif | |
191 | ||
4c9ba7e0 DJ |
192 | /* Attach to process PID, then initialize for debugging it. */ |
193 | ||
c906108c | 194 | static void |
4c9ba7e0 | 195 | child_attach (char *args, int from_tty) |
c906108c SS |
196 | { |
197 | if (!args) | |
198 | error_no_arg ("process-id to attach"); | |
199 | ||
200 | #ifndef ATTACH_DETACH | |
201 | error ("Can't attach to a process on this machine."); | |
202 | #else | |
203 | { | |
204 | char *exec_file; | |
205 | int pid; | |
206 | char *dummy; | |
207 | ||
208 | dummy = args; | |
209 | pid = strtol (args, &dummy, 0); | |
210 | /* Some targets don't set errno on errors, grrr! */ | |
211 | if ((pid == 0) && (args == dummy)) | |
212 | error ("Illegal process-id: %s\n", args); | |
213 | ||
c5aa993b | 214 | if (pid == getpid ()) /* Trying to masturbate? */ |
c906108c SS |
215 | error ("I refuse to debug myself!"); |
216 | ||
217 | if (from_tty) | |
218 | { | |
219 | exec_file = (char *) get_exec_file (0); | |
220 | ||
4c9ba7e0 | 221 | if (exec_file) |
c906108c | 222 | printf_unfiltered ("Attaching to program: %s, %s\n", exec_file, |
39f77062 | 223 | target_pid_to_str (pid_to_ptid (pid))); |
c5aa993b | 224 | else |
2146d243 | 225 | printf_unfiltered ("Attaching to %s\n", |
39f77062 | 226 | target_pid_to_str (pid_to_ptid (pid))); |
c906108c SS |
227 | |
228 | gdb_flush (gdb_stdout); | |
229 | } | |
230 | ||
4c9ba7e0 | 231 | attach (pid); |
c906108c | 232 | |
39f77062 | 233 | inferior_ptid = pid_to_ptid (pid); |
c906108c | 234 | push_target (&child_ops); |
20d2ca3e AC |
235 | |
236 | /* Do this first, before anything has had a chance to query the | |
237 | inferiors symbol table or similar. */ | |
238 | observer_notify_inferior_created (¤t_target, from_tty); | |
c906108c | 239 | } |
c5aa993b | 240 | #endif /* ATTACH_DETACH */ |
c906108c SS |
241 | } |
242 | ||
c906108c SS |
243 | #if !defined(CHILD_POST_ATTACH) |
244 | void | |
fba45db2 | 245 | child_post_attach (int pid) |
c906108c SS |
246 | { |
247 | /* This version of Unix doesn't require a meaningful "post attach" | |
248 | operation by a debugger. */ | |
249 | } | |
250 | #endif | |
251 | ||
4c9ba7e0 DJ |
252 | /* Take a program previously attached to and detaches it. |
253 | The program resumes execution and will no longer stop | |
254 | on signals, etc. We'd better not have left any breakpoints | |
255 | in the program or it'll die when it hits one. For this | |
256 | to work, it may be necessary for the process to have been | |
257 | previously attached. It *might* work if the program was | |
258 | started via the normal ptrace (PTRACE_TRACEME). */ | |
c906108c SS |
259 | |
260 | static void | |
4c9ba7e0 | 261 | child_detach (char *args, int from_tty) |
c906108c SS |
262 | { |
263 | #ifdef ATTACH_DETACH | |
264 | { | |
265 | int siggnal = 0; | |
4c9ba7e0 | 266 | int pid = PIDGET (inferior_ptid); |
c906108c SS |
267 | |
268 | if (from_tty) | |
269 | { | |
270 | char *exec_file = get_exec_file (0); | |
271 | if (exec_file == 0) | |
272 | exec_file = ""; | |
4c9ba7e0 DJ |
273 | printf_unfiltered ("Detaching from program: %s, %s\n", exec_file, |
274 | target_pid_to_str (pid_to_ptid (pid))); | |
c906108c SS |
275 | gdb_flush (gdb_stdout); |
276 | } | |
277 | if (args) | |
278 | siggnal = atoi (args); | |
279 | ||
4c9ba7e0 DJ |
280 | detach (siggnal); |
281 | ||
282 | inferior_ptid = null_ptid; | |
283 | unpush_target (&child_ops); | |
c906108c SS |
284 | } |
285 | #else | |
286 | error ("This version of Unix does not support detaching a process."); | |
287 | #endif | |
288 | } | |
289 | ||
c906108c SS |
290 | /* Get ready to modify the registers array. On machines which store |
291 | individual registers, this doesn't need to do anything. On machines | |
292 | which store all the registers in one fell swoop, this makes sure | |
293 | that registers contains all the registers from the program being | |
294 | debugged. */ | |
295 | ||
296 | static void | |
fba45db2 | 297 | child_prepare_to_store (void) |
c906108c SS |
298 | { |
299 | #ifdef CHILD_PREPARE_TO_STORE | |
300 | CHILD_PREPARE_TO_STORE (); | |
301 | #endif | |
302 | } | |
303 | ||
304 | /* Print status information about what we're accessing. */ | |
305 | ||
306 | static void | |
fba45db2 | 307 | child_files_info (struct target_ops *ignore) |
c906108c SS |
308 | { |
309 | printf_unfiltered ("\tUsing the running image of %s %s.\n", | |
39f77062 | 310 | attach_flag ? "attached" : "child", target_pid_to_str (inferior_ptid)); |
c906108c SS |
311 | } |
312 | ||
c906108c | 313 | static void |
fba45db2 | 314 | child_open (char *arg, int from_tty) |
c906108c SS |
315 | { |
316 | error ("Use the \"run\" command to start a Unix child process."); | |
317 | } | |
318 | ||
319 | /* Stub function which causes the inferior that runs it, to be ptrace-able | |
320 | by its parent process. */ | |
321 | ||
322 | static void | |
fba45db2 | 323 | ptrace_me (void) |
c906108c SS |
324 | { |
325 | /* "Trace me, Dr. Memory!" */ | |
326 | call_ptrace (0, 0, (PTRACE_ARG3_TYPE) 0, 0); | |
327 | } | |
328 | ||
329 | /* Stub function which causes the GDB that runs it, to start ptrace-ing | |
330 | the child process. */ | |
331 | ||
c5aa993b | 332 | static void |
fba45db2 | 333 | ptrace_him (int pid) |
c906108c SS |
334 | { |
335 | push_target (&child_ops); | |
336 | ||
337 | /* On some targets, there must be some explicit synchronization | |
338 | between the parent and child processes after the debugger | |
339 | forks, and before the child execs the debuggee program. This | |
340 | call basically gives permission for the child to exec. | |
c5aa993b | 341 | */ |
c906108c SS |
342 | |
343 | target_acknowledge_created_inferior (pid); | |
344 | ||
345 | /* START_INFERIOR_TRAPS_EXPECTED is defined in inferior.h, | |
346 | * and will be 1 or 2 depending on whether we're starting | |
347 | * without or with a shell. | |
348 | */ | |
349 | startup_inferior (START_INFERIOR_TRAPS_EXPECTED); | |
350 | ||
351 | /* On some targets, there must be some explicit actions taken after | |
352 | the inferior has been started up. | |
c5aa993b | 353 | */ |
39f77062 | 354 | target_post_startup_inferior (pid_to_ptid (pid)); |
c906108c SS |
355 | } |
356 | ||
39f77062 | 357 | /* Start an inferior Unix child process and sets inferior_ptid to its pid. |
c906108c SS |
358 | EXEC_FILE is the file to run. |
359 | ALLARGS is a string containing the arguments to the program. | |
360 | ENV is the environment vector to pass. Errors reported with error(). */ | |
361 | ||
362 | static void | |
c27cda74 AC |
363 | child_create_inferior (char *exec_file, char *allargs, char **env, |
364 | int from_tty) | |
c906108c | 365 | { |
c906108c | 366 | #ifdef HPUXHPPA |
c906108c SS |
367 | fork_inferior (exec_file, allargs, env, ptrace_me, ptrace_him, pre_fork_inferior, NULL); |
368 | #else | |
c5aa993b | 369 | fork_inferior (exec_file, allargs, env, ptrace_me, ptrace_him, NULL, NULL); |
c906108c SS |
370 | #endif |
371 | /* We are at the first instruction we care about. */ | |
20d2ca3e | 372 | observer_notify_inferior_created (¤t_target, from_tty); |
c906108c | 373 | /* Pedal to the metal... */ |
2acceee2 | 374 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_0, 0); |
c906108c SS |
375 | } |
376 | ||
377 | #if !defined(CHILD_POST_STARTUP_INFERIOR) | |
378 | void | |
39f77062 | 379 | child_post_startup_inferior (ptid_t ptid) |
c906108c SS |
380 | { |
381 | /* This version of Unix doesn't require a meaningful "post startup inferior" | |
382 | operation by a debugger. | |
c5aa993b | 383 | */ |
c906108c SS |
384 | } |
385 | #endif | |
386 | ||
387 | #if !defined(CHILD_ACKNOWLEDGE_CREATED_INFERIOR) | |
388 | void | |
fba45db2 | 389 | child_acknowledge_created_inferior (int pid) |
c906108c SS |
390 | { |
391 | /* This version of Unix doesn't require a meaningful "acknowledge created inferior" | |
392 | operation by a debugger. | |
c5aa993b | 393 | */ |
c906108c SS |
394 | } |
395 | #endif | |
396 | ||
397 | ||
c906108c SS |
398 | #if !defined(CHILD_INSERT_FORK_CATCHPOINT) |
399 | int | |
fba45db2 | 400 | child_insert_fork_catchpoint (int pid) |
c906108c SS |
401 | { |
402 | /* This version of Unix doesn't support notification of fork events. */ | |
403 | return 0; | |
404 | } | |
405 | #endif | |
406 | ||
407 | #if !defined(CHILD_REMOVE_FORK_CATCHPOINT) | |
408 | int | |
fba45db2 | 409 | child_remove_fork_catchpoint (int pid) |
c906108c SS |
410 | { |
411 | /* This version of Unix doesn't support notification of fork events. */ | |
412 | return 0; | |
413 | } | |
414 | #endif | |
415 | ||
416 | #if !defined(CHILD_INSERT_VFORK_CATCHPOINT) | |
417 | int | |
fba45db2 | 418 | child_insert_vfork_catchpoint (int pid) |
c906108c SS |
419 | { |
420 | /* This version of Unix doesn't support notification of vfork events. */ | |
421 | return 0; | |
422 | } | |
423 | #endif | |
424 | ||
425 | #if !defined(CHILD_REMOVE_VFORK_CATCHPOINT) | |
426 | int | |
fba45db2 | 427 | child_remove_vfork_catchpoint (int pid) |
c906108c SS |
428 | { |
429 | /* This version of Unix doesn't support notification of vfork events. */ | |
430 | return 0; | |
431 | } | |
432 | #endif | |
433 | ||
6604731b DJ |
434 | #if !defined(CHILD_FOLLOW_FORK) |
435 | int | |
436 | child_follow_fork (int follow_child) | |
c906108c | 437 | { |
6604731b DJ |
438 | /* This version of Unix doesn't support following fork or vfork events. */ |
439 | return 0; | |
c906108c SS |
440 | } |
441 | #endif | |
442 | ||
443 | #if !defined(CHILD_INSERT_EXEC_CATCHPOINT) | |
444 | int | |
fba45db2 | 445 | child_insert_exec_catchpoint (int pid) |
c906108c SS |
446 | { |
447 | /* This version of Unix doesn't support notification of exec events. */ | |
448 | return 0; | |
449 | } | |
450 | #endif | |
451 | ||
452 | #if !defined(CHILD_REMOVE_EXEC_CATCHPOINT) | |
453 | int | |
fba45db2 | 454 | child_remove_exec_catchpoint (int pid) |
c906108c SS |
455 | { |
456 | /* This version of Unix doesn't support notification of exec events. */ | |
457 | return 0; | |
458 | } | |
459 | #endif | |
460 | ||
c906108c SS |
461 | #if !defined(CHILD_REPORTED_EXEC_EVENTS_PER_EXEC_CALL) |
462 | int | |
fba45db2 | 463 | child_reported_exec_events_per_exec_call (void) |
c906108c SS |
464 | { |
465 | /* This version of Unix doesn't support notification of exec events. | |
c5aa993b | 466 | */ |
c906108c SS |
467 | return 1; |
468 | } | |
469 | #endif | |
470 | ||
c906108c SS |
471 | #if !defined(CHILD_HAS_EXITED) |
472 | int | |
fba45db2 | 473 | child_has_exited (int pid, int wait_status, int *exit_status) |
c906108c SS |
474 | { |
475 | if (WIFEXITED (wait_status)) | |
476 | { | |
477 | *exit_status = WEXITSTATUS (wait_status); | |
478 | return 1; | |
479 | } | |
480 | ||
481 | if (WIFSIGNALED (wait_status)) | |
482 | { | |
c5aa993b | 483 | *exit_status = 0; /* ?? Don't know what else to say here. */ |
c906108c SS |
484 | return 1; |
485 | } | |
486 | ||
487 | /* ?? Do we really need to consult the event state, too? Assume the | |
c5aa993b | 488 | wait_state alone suffices. |
c906108c SS |
489 | */ |
490 | return 0; | |
491 | } | |
492 | #endif | |
493 | ||
494 | ||
495 | static void | |
fba45db2 | 496 | child_mourn_inferior (void) |
c906108c | 497 | { |
c906108c | 498 | unpush_target (&child_ops); |
c906108c SS |
499 | generic_mourn_inferior (); |
500 | } | |
501 | ||
502 | static int | |
fba45db2 | 503 | child_can_run (void) |
c906108c SS |
504 | { |
505 | /* This variable is controlled by modules that sit atop inftarg that may layer | |
506 | their own process structure atop that provided here. hpux-thread.c does | |
507 | this because of the Hpux user-mode level thread model. */ | |
508 | ||
509 | return !child_suppress_run; | |
510 | } | |
511 | ||
512 | /* Send a SIGINT to the process group. This acts just like the user typed a | |
513 | ^C on the controlling terminal. | |
514 | ||
515 | XXX - This may not be correct for all systems. Some may want to use | |
516 | killpg() instead of kill (-pgrp). */ | |
517 | ||
518 | static void | |
fba45db2 | 519 | child_stop (void) |
c906108c | 520 | { |
c906108c SS |
521 | kill (-inferior_process_group, SIGINT); |
522 | } | |
523 | ||
524 | #if !defined(CHILD_ENABLE_EXCEPTION_CALLBACK) | |
525 | struct symtab_and_line * | |
fba45db2 | 526 | child_enable_exception_callback (enum exception_event_kind kind, int enable) |
c906108c SS |
527 | { |
528 | return (struct symtab_and_line *) NULL; | |
529 | } | |
530 | #endif | |
531 | ||
532 | #if !defined(CHILD_GET_CURRENT_EXCEPTION_EVENT) | |
533 | struct exception_event_record * | |
fba45db2 | 534 | child_get_current_exception_event (void) |
c906108c SS |
535 | { |
536 | return (struct exception_event_record *) NULL; | |
537 | } | |
538 | #endif | |
539 | ||
540 | ||
541 | #if !defined(CHILD_PID_TO_EXEC_FILE) | |
542 | char * | |
fba45db2 | 543 | child_pid_to_exec_file (int pid) |
c906108c SS |
544 | { |
545 | /* This version of Unix doesn't support translation of a process ID | |
546 | to the filename of the executable file. | |
c5aa993b | 547 | */ |
c906108c SS |
548 | return NULL; |
549 | } | |
550 | #endif | |
551 | ||
552 | char * | |
fba45db2 | 553 | child_core_file_to_sym_file (char *core) |
c906108c SS |
554 | { |
555 | /* The target stratum for a running executable need not support | |
556 | this operation. | |
c5aa993b | 557 | */ |
c906108c SS |
558 | return NULL; |
559 | } | |
f168dd80 AC |
560 | |
561 | /* Perform a partial transfer to/from the specified object. For | |
562 | memory transfers, fall back to the old memory xfer functions. */ | |
563 | ||
564 | static LONGEST | |
8aa91c1e AC |
565 | child_xfer_partial (struct target_ops *ops, enum target_object object, |
566 | const char *annex, void *readbuf, | |
567 | const void *writebuf, ULONGEST offset, LONGEST len) | |
f168dd80 AC |
568 | { |
569 | switch (object) | |
570 | { | |
571 | case TARGET_OBJECT_MEMORY: | |
572 | if (readbuf) | |
573 | return child_xfer_memory (offset, readbuf, len, 0/*write*/, | |
574 | NULL, ops); | |
575 | if (writebuf) | |
576 | return child_xfer_memory (offset, readbuf, len, 1/*write*/, | |
577 | NULL, ops); | |
578 | return -1; | |
579 | ||
f168dd80 AC |
580 | case TARGET_OBJECT_UNWIND_TABLE: |
581 | #ifndef NATIVE_XFER_UNWIND_TABLE | |
582 | #define NATIVE_XFER_UNWIND_TABLE(OPS,OBJECT,ANNEX,WRITEBUF,READBUF,OFFSET,LEN) (-1) | |
583 | #endif | |
8aa91c1e AC |
584 | return NATIVE_XFER_UNWIND_TABLE (ops, object, annex, readbuf, writebuf, |
585 | offset, len); | |
f168dd80 | 586 | |
f168dd80 | 587 | case TARGET_OBJECT_AUXV: |
2146d243 RM |
588 | #ifndef NATIVE_XFER_AUXV |
589 | #define NATIVE_XFER_AUXV(OPS,OBJECT,ANNEX,WRITEBUF,READBUF,OFFSET,LEN) (-1) | |
f168dd80 | 590 | #endif |
2146d243 RM |
591 | return NATIVE_XFER_AUXV (ops, object, annex, readbuf, writebuf, |
592 | offset, len); | |
f168dd80 | 593 | |
baf92889 MK |
594 | case TARGET_OBJECT_WCOOKIE: |
595 | #ifndef NATIVE_XFER_WCOOKIE | |
596 | #define NATIVE_XFER_WCOOKIE(OPS,OBJECT,ANNEX,WRITEBUF,READBUF,OFFSET,LEN) (-1) | |
597 | #endif | |
598 | return NATIVE_XFER_WCOOKIE (ops, object, annex, readbuf, writebuf, | |
599 | offset, len); | |
600 | ||
f168dd80 AC |
601 | default: |
602 | return -1; | |
603 | } | |
604 | } | |
c906108c | 605 | |
ed9a39eb JM |
606 | #if !defined(CHILD_PID_TO_STR) |
607 | char * | |
39f77062 | 608 | child_pid_to_str (ptid_t ptid) |
ed9a39eb | 609 | { |
39f77062 | 610 | return normal_pid_to_str (ptid); |
ed9a39eb JM |
611 | } |
612 | #endif | |
c906108c | 613 | |
c906108c | 614 | static void |
fba45db2 | 615 | init_child_ops (void) |
c906108c SS |
616 | { |
617 | child_ops.to_shortname = "child"; | |
618 | child_ops.to_longname = "Unix child process"; | |
619 | child_ops.to_doc = "Unix child process (started by the \"run\" command)."; | |
620 | child_ops.to_open = child_open; | |
621 | child_ops.to_attach = child_attach; | |
622 | child_ops.to_post_attach = child_post_attach; | |
c906108c | 623 | child_ops.to_detach = child_detach; |
c906108c SS |
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; | |
f168dd80 | 631 | child_ops.to_xfer_partial = child_xfer_partial; |
c906108c SS |
632 | child_ops.to_files_info = child_files_info; |
633 | child_ops.to_insert_breakpoint = memory_insert_breakpoint; | |
634 | child_ops.to_remove_breakpoint = memory_remove_breakpoint; | |
635 | child_ops.to_terminal_init = terminal_init_inferior; | |
636 | child_ops.to_terminal_inferior = terminal_inferior; | |
637 | child_ops.to_terminal_ours_for_output = terminal_ours_for_output; | |
a790ad35 | 638 | child_ops.to_terminal_save_ours = terminal_save_ours; |
c906108c SS |
639 | child_ops.to_terminal_ours = terminal_ours; |
640 | child_ops.to_terminal_info = child_terminal_info; | |
641 | child_ops.to_kill = kill_inferior; | |
642 | child_ops.to_create_inferior = child_create_inferior; | |
643 | child_ops.to_post_startup_inferior = child_post_startup_inferior; | |
644 | child_ops.to_acknowledge_created_inferior = child_acknowledge_created_inferior; | |
c906108c SS |
645 | child_ops.to_insert_fork_catchpoint = child_insert_fork_catchpoint; |
646 | child_ops.to_remove_fork_catchpoint = child_remove_fork_catchpoint; | |
647 | child_ops.to_insert_vfork_catchpoint = child_insert_vfork_catchpoint; | |
648 | child_ops.to_remove_vfork_catchpoint = child_remove_vfork_catchpoint; | |
6604731b | 649 | child_ops.to_follow_fork = child_follow_fork; |
c906108c SS |
650 | child_ops.to_insert_exec_catchpoint = child_insert_exec_catchpoint; |
651 | child_ops.to_remove_exec_catchpoint = child_remove_exec_catchpoint; | |
c906108c | 652 | child_ops.to_reported_exec_events_per_exec_call = child_reported_exec_events_per_exec_call; |
c906108c SS |
653 | child_ops.to_has_exited = child_has_exited; |
654 | child_ops.to_mourn_inferior = child_mourn_inferior; | |
655 | child_ops.to_can_run = child_can_run; | |
656 | child_ops.to_thread_alive = child_thread_alive; | |
ed9a39eb | 657 | child_ops.to_pid_to_str = child_pid_to_str; |
c906108c SS |
658 | child_ops.to_stop = child_stop; |
659 | child_ops.to_enable_exception_callback = child_enable_exception_callback; | |
660 | child_ops.to_get_current_exception_event = child_get_current_exception_event; | |
661 | child_ops.to_pid_to_exec_file = child_pid_to_exec_file; | |
c906108c SS |
662 | child_ops.to_stratum = process_stratum; |
663 | child_ops.to_has_all_memory = 1; | |
664 | child_ops.to_has_memory = 1; | |
665 | child_ops.to_has_stack = 1; | |
666 | child_ops.to_has_registers = 1; | |
667 | child_ops.to_has_execution = 1; | |
668 | child_ops.to_magic = OPS_MAGIC; | |
669 | } | |
670 | ||
be4d1333 | 671 | /* Take over the 'find_mapped_memory' vector from inftarg.c. */ |
2146d243 RM |
672 | extern void |
673 | inftarg_set_find_memory_regions (int (*func) (int (*) (CORE_ADDR, | |
674 | unsigned long, | |
675 | int, int, int, | |
be4d1333 MS |
676 | void *), |
677 | void *)) | |
678 | { | |
679 | child_ops.to_find_memory_regions = func; | |
680 | } | |
681 | ||
682 | /* Take over the 'make_corefile_notes' vector from inftarg.c. */ | |
2146d243 | 683 | extern void |
be4d1333 MS |
684 | inftarg_set_make_corefile_notes (char * (*func) (bfd *, int *)) |
685 | { | |
686 | child_ops.to_make_corefile_notes = func; | |
687 | } | |
688 | ||
c906108c | 689 | void |
fba45db2 | 690 | _initialize_inftarg (void) |
c906108c SS |
691 | { |
692 | #ifdef HAVE_OPTIONAL_PROC_FS | |
693 | char procname[32]; | |
694 | int fd; | |
695 | ||
696 | /* If we have an optional /proc filesystem (e.g. under OSF/1), | |
697 | don't add ptrace support if we can access the running GDB via /proc. */ | |
698 | #ifndef PROC_NAME_FMT | |
699 | #define PROC_NAME_FMT "/proc/%05d" | |
700 | #endif | |
701 | sprintf (procname, PROC_NAME_FMT, getpid ()); | |
bde58177 AC |
702 | fd = open (procname, O_RDONLY); |
703 | if (fd >= 0) | |
c906108c SS |
704 | { |
705 | close (fd); | |
706 | return; | |
707 | } | |
708 | #endif | |
709 | ||
710 | init_child_ops (); | |
711 | add_target (&child_ops); | |
712 | } |