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5bf970f9 AC |
1 | /* Low level Unix child interface to ptrace, for GDB when running under Unix. |
2 | ||
3 | Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, | |
4 | 1998, 1999, 2000, 2001, 2002, 2004 Free Software Foundation, Inc. | |
5 | ||
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
22 | ||
23 | #include "defs.h" | |
24 | #include "observer.h" | |
25 | #include "gdb_ptrace.h" | |
26 | #include "inflow.h" | |
27 | #include "inferior.h" | |
28 | #include "regcache.h" | |
29 | #include "command.h" | |
30 | #include "gdbcore.h" | |
31 | #include "inf-child.h" | |
32 | #include "gdbcmd.h" | |
33 | ||
34 | #include <sys/wait.h> | |
35 | #include <signal.h> | |
36 | ||
37 | /* HACK: Save the ptrace ops returned by ptrace_target. */ | |
38 | static struct target_ops *ptrace_ops_hack; | |
39 | ||
40 | static void | |
41 | inf_ptrace_kill_inferior (void) | |
42 | { | |
43 | int status; | |
44 | int pid = PIDGET (inferior_ptid); | |
45 | ||
46 | if (pid == 0) | |
47 | return; | |
48 | ||
49 | /* This once used to call "kill" to kill the inferior just in case | |
50 | the inferior was still running. As others have noted in the past | |
51 | (kingdon) there shouldn't be any way to get here if the inferior | |
52 | is still running -- else there's a major problem elsewere in gdb | |
53 | and it needs to be fixed. | |
54 | ||
55 | The kill call causes problems under hpux10, so it's been removed; | |
56 | if this causes problems we'll deal with them as they arise. */ | |
57 | call_ptrace (PT_KILL, pid, (PTRACE_TYPE_ARG3) 0, 0); | |
58 | ptrace_wait (null_ptid, &status); | |
59 | target_mourn_inferior (); | |
60 | } | |
61 | ||
62 | /* Resume execution of the inferior process. If STEP is nonzero, | |
63 | single-step it. If SIGNAL is nonzero, give it that signal. */ | |
64 | ||
65 | static void | |
66 | inf_ptrace_resume (ptid_t ptid, int step, enum target_signal signal) | |
67 | { | |
68 | int request = PT_CONTINUE; | |
69 | int pid = PIDGET (ptid); | |
70 | ||
71 | if (pid == -1) | |
72 | /* Resume all threads. */ | |
73 | /* I think this only gets used in the non-threaded case, where | |
74 | "resume all threads" and "resume inferior_ptid" are the | |
75 | same. */ | |
76 | pid = PIDGET (inferior_ptid); | |
77 | ||
78 | if (step) | |
79 | { | |
80 | /* If this system does not support PT_STEP, a higher level | |
81 | function will have called single_step() to transmute the step | |
82 | request into a continue request (by setting breakpoints on | |
83 | all possible successor instructions), so we don't have to | |
84 | worry about that here. */ | |
85 | request = PT_STEP; | |
86 | } | |
87 | ||
88 | /* An address of (PTRACE_TYPE_ARG3)1 tells ptrace to continue from | |
89 | where it was. If GDB wanted it to start some other way, we have | |
90 | already written a new PC value to the child. */ | |
91 | errno = 0; | |
92 | ptrace (request, pid, (PTRACE_TYPE_ARG3) 1, target_signal_to_host (signal)); | |
93 | if (errno != 0) | |
94 | perror_with_name ("ptrace"); | |
95 | } | |
96 | ||
97 | /* Set an upper limit on alloca. */ | |
98 | #define GDB_MAX_ALLOCA 0x1000 | |
99 | ||
100 | /* NOTE! I tried using PTRACE_READDATA, etc., to read and write memory | |
101 | in the NEW_SUN_PTRACE case. It ought to be straightforward. But | |
102 | it appears that writing did not write the data that I specified. I | |
103 | cannot understand where it got the data that it actually did | |
104 | write. */ | |
105 | ||
106 | /* Copy LEN bytes to or from inferior's memory starting at MEMADDR to | |
107 | debugger memory starting at MYADDR. Copy to inferior if WRITE is | |
108 | nonzero. TARGET is ignored. | |
109 | ||
110 | Returns the length copied, which is either the LEN argument or | |
111 | zero. This xfer function does not do partial moves, since | |
112 | ptrace_ops_hack doesn't allow memory operations to cross below us in the | |
113 | target stack anyway. */ | |
114 | ||
115 | int | |
116 | inf_ptrace_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write, | |
117 | struct mem_attrib *attrib, struct target_ops *target) | |
118 | { | |
119 | int i; | |
120 | /* Round starting address down to longword boundary. */ | |
121 | CORE_ADDR addr = memaddr & -(CORE_ADDR) sizeof (PTRACE_TYPE_RET); | |
122 | /* Round ending address up; get number of longwords that makes. */ | |
123 | int count = ((((memaddr + len) - addr) + sizeof (PTRACE_TYPE_RET) - 1) | |
124 | / sizeof (PTRACE_TYPE_RET)); | |
125 | int alloc = count * sizeof (PTRACE_TYPE_RET); | |
126 | PTRACE_TYPE_RET *buffer; | |
127 | struct cleanup *old_chain = NULL; | |
128 | ||
129 | #ifdef PT_IO | |
130 | /* OpenBSD 3.1, NetBSD 1.6 and FreeBSD 5.0 have a new PT_IO request | |
131 | that promises to be much more efficient in reading and writing | |
132 | data in the traced process's address space. */ | |
133 | ||
134 | { | |
135 | struct ptrace_io_desc piod; | |
136 | ||
137 | /* NOTE: We assume that there are no distinct address spaces for | |
138 | instruction and data. */ | |
139 | piod.piod_op = write ? PIOD_WRITE_D : PIOD_READ_D; | |
140 | piod.piod_offs = (void *) memaddr; | |
141 | piod.piod_addr = myaddr; | |
142 | piod.piod_len = len; | |
143 | ||
144 | if (ptrace (PT_IO, PIDGET (inferior_ptid), (caddr_t) & piod, 0) == -1) | |
145 | { | |
146 | /* If the PT_IO request is somehow not supported, fallback on | |
147 | using PT_WRITE_D/PT_READ_D. Otherwise we will return zero | |
148 | to indicate failure. */ | |
149 | if (errno != EINVAL) | |
150 | return 0; | |
151 | } | |
152 | else | |
153 | { | |
154 | /* Return the actual number of bytes read or written. */ | |
155 | return piod.piod_len; | |
156 | } | |
157 | } | |
158 | #endif | |
159 | ||
160 | /* Allocate buffer of that many longwords. */ | |
161 | if (len < GDB_MAX_ALLOCA) | |
162 | { | |
163 | buffer = (PTRACE_TYPE_RET *) alloca (alloc); | |
164 | } | |
165 | else | |
166 | { | |
167 | buffer = (PTRACE_TYPE_RET *) xmalloc (alloc); | |
168 | old_chain = make_cleanup (xfree, buffer); | |
169 | } | |
170 | ||
171 | if (write) | |
172 | { | |
173 | /* Fill start and end extra bytes of buffer with existing memory | |
174 | data. */ | |
175 | if (addr != memaddr || len < (int) sizeof (PTRACE_TYPE_RET)) | |
176 | { | |
177 | /* Need part of initial word -- fetch it. */ | |
178 | buffer[0] = ptrace (PT_READ_I, PIDGET (inferior_ptid), | |
179 | (PTRACE_TYPE_ARG3) addr, 0); | |
180 | } | |
181 | ||
182 | if (count > 1) /* FIXME, avoid if even boundary. */ | |
183 | { | |
184 | buffer[count - 1] = | |
185 | ptrace (PT_READ_I, PIDGET (inferior_ptid), | |
186 | ((PTRACE_TYPE_ARG3) | |
187 | (addr + (count - 1) * sizeof (PTRACE_TYPE_RET))), 0); | |
188 | } | |
189 | ||
190 | /* Copy data to be written over corresponding part of buffer. */ | |
191 | memcpy ((char *) buffer + (memaddr & (sizeof (PTRACE_TYPE_RET) - 1)), | |
192 | myaddr, len); | |
193 | ||
194 | /* Write the entire buffer. */ | |
195 | for (i = 0; i < count; i++, addr += sizeof (PTRACE_TYPE_RET)) | |
196 | { | |
197 | errno = 0; | |
198 | ptrace (PT_WRITE_D, PIDGET (inferior_ptid), | |
199 | (PTRACE_TYPE_ARG3) addr, buffer[i]); | |
200 | if (errno) | |
201 | { | |
202 | /* Using the appropriate one (I or D) is necessary for | |
203 | Gould NP1, at least. */ | |
204 | errno = 0; | |
205 | ptrace (PT_WRITE_I, PIDGET (inferior_ptid), | |
206 | (PTRACE_TYPE_ARG3) addr, buffer[i]); | |
207 | } | |
208 | if (errno) | |
209 | return 0; | |
210 | } | |
211 | } | |
212 | else | |
213 | { | |
214 | /* Read all the longwords. */ | |
215 | for (i = 0; i < count; i++, addr += sizeof (PTRACE_TYPE_RET)) | |
216 | { | |
217 | errno = 0; | |
218 | buffer[i] = ptrace (PT_READ_I, PIDGET (inferior_ptid), | |
219 | (PTRACE_TYPE_ARG3) addr, 0); | |
220 | if (errno) | |
221 | return 0; | |
222 | QUIT; | |
223 | } | |
224 | ||
225 | /* Copy appropriate bytes out of the buffer. */ | |
226 | memcpy (myaddr, | |
227 | (char *) buffer + (memaddr & (sizeof (PTRACE_TYPE_RET) - 1)), | |
228 | len); | |
229 | } | |
230 | ||
231 | if (old_chain != NULL) | |
232 | do_cleanups (old_chain); | |
233 | return len; | |
234 | } | |
235 | ||
236 | /* Wait for child to do something. Return pid of child, or -1 in case | |
237 | of error; store status through argument pointer OURSTATUS. */ | |
238 | ||
239 | static ptid_t | |
240 | inf_ptrace_wait (ptid_t ptid, struct target_waitstatus *ourstatus) | |
241 | { | |
242 | int save_errno; | |
243 | int status; | |
244 | char *execd_pathname = NULL; | |
245 | int exit_status; | |
246 | int related_pid; | |
247 | int syscall_id; | |
248 | enum target_waitkind kind; | |
249 | int pid; | |
250 | ||
251 | do | |
252 | { | |
253 | set_sigint_trap (); /* Causes SIGINT to be passed on to the | |
254 | attached process. */ | |
255 | set_sigio_trap (); | |
256 | ||
257 | pid = ptrace_wait (inferior_ptid, &status); | |
258 | ||
259 | save_errno = errno; | |
260 | ||
261 | clear_sigio_trap (); | |
262 | ||
263 | clear_sigint_trap (); | |
264 | ||
265 | if (pid == -1) | |
266 | { | |
267 | if (save_errno == EINTR) | |
268 | continue; | |
269 | ||
270 | fprintf_unfiltered (gdb_stderr, | |
271 | "Child process unexpectedly missing: %s.\n", | |
272 | safe_strerror (save_errno)); | |
273 | ||
274 | /* Claim it exited with unknown signal. */ | |
275 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
276 | ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN; | |
277 | return pid_to_ptid (-1); | |
278 | } | |
279 | ||
280 | /* Did it exit? | |
281 | */ | |
282 | if (target_has_exited (pid, status, &exit_status)) | |
283 | { | |
284 | /* ??rehrauer: For now, ignore this. */ | |
285 | continue; | |
286 | } | |
287 | ||
288 | if (!target_thread_alive (pid_to_ptid (pid))) | |
289 | { | |
290 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; | |
291 | return pid_to_ptid (pid); | |
292 | } | |
293 | } | |
294 | while (pid != PIDGET (inferior_ptid)); /* Some other child died or stopped */ | |
295 | ||
296 | store_waitstatus (ourstatus, status); | |
297 | return pid_to_ptid (pid); | |
298 | } | |
299 | ||
300 | void | |
301 | inf_ptrace_post_wait (ptid_t ptid, int wait_status) | |
302 | { | |
303 | /* This version of Unix doesn't require a meaningful "post wait" | |
304 | operation. | |
305 | */ | |
306 | } | |
307 | ||
308 | /* Check to see if the given thread is alive. | |
309 | ||
310 | FIXME: Is kill() ever the right way to do this? I doubt it, but | |
311 | for now we're going to try and be compatable with the old thread | |
312 | code. */ | |
313 | ||
314 | static int | |
315 | inf_ptrace_thread_alive (ptid_t ptid) | |
316 | { | |
317 | pid_t pid = PIDGET (ptid); | |
318 | ||
319 | return (kill (pid, 0) != -1); | |
320 | } | |
321 | ||
322 | /* Attach to process PID, then initialize for debugging it. */ | |
323 | ||
324 | static void | |
325 | inf_ptrace_attach (char *args, int from_tty) | |
326 | { | |
327 | char *exec_file; | |
328 | int pid; | |
329 | char *dummy; | |
330 | ||
331 | if (!args) | |
332 | error_no_arg ("process-id to attach"); | |
333 | ||
334 | dummy = args; | |
335 | pid = strtol (args, &dummy, 0); | |
336 | /* Some targets don't set errno on errors, grrr! */ | |
337 | if ((pid == 0) && (args == dummy)) | |
338 | error ("Illegal process-id: %s\n", args); | |
339 | ||
340 | if (pid == getpid ()) /* Trying to masturbate? */ | |
341 | error ("I refuse to debug myself!"); | |
342 | ||
343 | if (from_tty) | |
344 | { | |
345 | exec_file = (char *) get_exec_file (0); | |
346 | ||
347 | if (exec_file) | |
348 | printf_unfiltered ("Attaching to program: %s, %s\n", exec_file, | |
349 | target_pid_to_str (pid_to_ptid (pid))); | |
350 | else | |
351 | printf_unfiltered ("Attaching to %s\n", | |
352 | target_pid_to_str (pid_to_ptid (pid))); | |
353 | ||
354 | gdb_flush (gdb_stdout); | |
355 | } | |
356 | ||
357 | attach (pid); | |
358 | ||
359 | inferior_ptid = pid_to_ptid (pid); | |
360 | push_target (ptrace_ops_hack); | |
361 | } | |
362 | ||
363 | static void | |
364 | inf_ptrace_post_attach (int pid) | |
365 | { | |
366 | /* This version of Unix doesn't require a meaningful "post attach" | |
367 | operation by a debugger. */ | |
368 | } | |
369 | ||
370 | /* Take a program previously attached to and detaches it. The program | |
371 | resumes execution and will no longer stop on signals, etc. We'd | |
372 | better not have left any breakpoints in the program or it'll die | |
373 | when it hits one. For this to work, it may be necessary for the | |
374 | process to have been previously attached. It *might* work if the | |
375 | program was started via the normal ptrace (PTRACE_TRACEME). */ | |
376 | ||
377 | static void | |
378 | inf_ptrace_detach (char *args, int from_tty) | |
379 | { | |
380 | int siggnal = 0; | |
381 | int pid = PIDGET (inferior_ptid); | |
382 | ||
383 | if (from_tty) | |
384 | { | |
385 | char *exec_file = get_exec_file (0); | |
386 | if (exec_file == 0) | |
387 | exec_file = ""; | |
388 | printf_unfiltered ("Detaching from program: %s, %s\n", exec_file, | |
389 | target_pid_to_str (pid_to_ptid (pid))); | |
390 | gdb_flush (gdb_stdout); | |
391 | } | |
392 | if (args) | |
393 | siggnal = atoi (args); | |
394 | ||
395 | detach (siggnal); | |
396 | ||
397 | inferior_ptid = null_ptid; | |
398 | unpush_target (ptrace_ops_hack); | |
399 | } | |
400 | ||
401 | /* Get ready to modify the registers array. On machines which store | |
402 | individual registers, this doesn't need to do anything. On | |
403 | machines which store all the registers in one fell swoop, this | |
404 | makes sure that registers contains all the registers from the | |
405 | program being debugged. */ | |
406 | ||
407 | static void | |
408 | inf_ptrace_prepare_to_store (void) | |
409 | { | |
410 | } | |
411 | ||
412 | /* Print status information about what we're accessing. */ | |
413 | ||
414 | static void | |
415 | inf_ptrace_files_info (struct target_ops *ignore) | |
416 | { | |
417 | printf_unfiltered ("\tUsing the running image of %s %s.\n", | |
418 | attach_flag ? "attached" : "child", | |
419 | target_pid_to_str (inferior_ptid)); | |
420 | } | |
421 | ||
422 | static void | |
423 | inf_ptrace_open (char *arg, int from_tty) | |
424 | { | |
425 | error ("Use the \"run\" command to start a Unix child process."); | |
426 | } | |
427 | ||
428 | /* Stub function which causes the inferior that runs it, to be ptrace-able | |
429 | by its parent process. */ | |
430 | ||
431 | static void | |
432 | inf_ptrace_me (void) | |
433 | { | |
434 | /* "Trace me, Dr. Memory!" */ | |
435 | call_ptrace (0, 0, (PTRACE_TYPE_ARG3) 0, 0); | |
436 | } | |
437 | ||
438 | /* Stub function which causes the GDB that runs it, to start ptrace-ing | |
439 | the child process. */ | |
440 | ||
441 | static void | |
442 | inf_ptrace_him (int pid) | |
443 | { | |
444 | push_target (ptrace_ops_hack); | |
445 | ||
446 | /* On some targets, there must be some explicit synchronization | |
447 | between the parent and child processes after the debugger | |
448 | forks, and before the child execs the debuggee program. This | |
449 | call basically gives permission for the child to exec. | |
450 | */ | |
451 | ||
452 | target_acknowledge_created_inferior (pid); | |
453 | ||
454 | /* START_INFERIOR_TRAPS_EXPECTED is defined in inferior.h, | |
455 | * and will be 1 or 2 depending on whether we're starting | |
456 | * without or with a shell. | |
457 | */ | |
458 | startup_inferior (START_INFERIOR_TRAPS_EXPECTED); | |
459 | ||
460 | /* On some targets, there must be some explicit actions taken after | |
461 | the inferior has been started up. | |
462 | */ | |
463 | target_post_startup_inferior (pid_to_ptid (pid)); | |
464 | } | |
465 | ||
466 | /* Start an inferior Unix child process and sets inferior_ptid to its | |
467 | pid. EXEC_FILE is the file to run. ALLARGS is a string containing | |
468 | the arguments to the program. ENV is the environment vector to | |
469 | pass. Errors reported with error(). */ | |
470 | ||
471 | static void | |
472 | inf_ptrace_create_inferior (char *exec_file, char *allargs, char **env, | |
473 | int from_tty) | |
474 | { | |
475 | fork_inferior (exec_file, allargs, env, inf_ptrace_me, inf_ptrace_him, | |
476 | NULL, NULL); | |
477 | /* We are at the first instruction we care about. */ | |
478 | observer_notify_inferior_created (¤t_target, from_tty); | |
479 | /* Pedal to the metal... */ | |
480 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_0, 0); | |
481 | } | |
482 | ||
483 | static void | |
484 | inf_ptrace_post_startup_inferior (ptid_t ptid) | |
485 | { | |
486 | /* This version of Unix doesn't require a meaningful "post startup inferior" | |
487 | operation by a debugger. | |
488 | */ | |
489 | } | |
490 | ||
491 | static void | |
492 | inf_ptrace_acknowledge_created_inferior (int pid) | |
493 | { | |
494 | /* This version of Unix doesn't require a meaningful "acknowledge created inferior" | |
495 | operation by a debugger. | |
496 | */ | |
497 | } | |
498 | ||
499 | static int | |
500 | inf_ptrace_insert_fork_catchpoint (int pid) | |
501 | { | |
502 | /* This version of Unix doesn't support notification of fork events. */ | |
503 | return 0; | |
504 | } | |
505 | ||
506 | static int | |
507 | inf_ptrace_remove_fork_catchpoint (int pid) | |
508 | { | |
509 | /* This version of Unix doesn't support notification of fork events. */ | |
510 | return 0; | |
511 | } | |
512 | ||
513 | static int | |
514 | inf_ptrace_insert_vfork_catchpoint (int pid) | |
515 | { | |
516 | /* This version of Unix doesn't support notification of vfork events. */ | |
517 | return 0; | |
518 | } | |
519 | ||
520 | static int | |
521 | inf_ptrace_remove_vfork_catchpoint (int pid) | |
522 | { | |
523 | /* This version of Unix doesn't support notification of vfork events. */ | |
524 | return 0; | |
525 | } | |
526 | ||
527 | static int | |
528 | inf_ptrace_follow_fork (int follow_child) | |
529 | { | |
530 | /* This version of Unix doesn't support following fork or vfork events. */ | |
531 | return 0; | |
532 | } | |
533 | ||
534 | static int | |
535 | inf_ptrace_insert_exec_catchpoint (int pid) | |
536 | { | |
537 | /* This version of Unix doesn't support notification of exec events. */ | |
538 | return 0; | |
539 | } | |
540 | ||
541 | static int | |
542 | inf_ptrace_remove_exec_catchpoint (int pid) | |
543 | { | |
544 | /* This version of Unix doesn't support notification of exec events. */ | |
545 | return 0; | |
546 | } | |
547 | ||
548 | static int | |
549 | inf_ptrace_reported_exec_events_per_exec_call (void) | |
550 | { | |
551 | /* This version of Unix doesn't support notification of exec events. | |
552 | */ | |
553 | return 1; | |
554 | } | |
555 | ||
556 | static int | |
557 | inf_ptrace_has_exited (int pid, int wait_status, int *exit_status) | |
558 | { | |
559 | if (WIFEXITED (wait_status)) | |
560 | { | |
561 | *exit_status = WEXITSTATUS (wait_status); | |
562 | return 1; | |
563 | } | |
564 | ||
565 | if (WIFSIGNALED (wait_status)) | |
566 | { | |
567 | *exit_status = 0; /* ?? Don't know what else to say here. */ | |
568 | return 1; | |
569 | } | |
570 | ||
571 | /* ?? Do we really need to consult the event state, too? Assume the | |
572 | wait_state alone suffices. | |
573 | */ | |
574 | return 0; | |
575 | } | |
576 | ||
577 | static void | |
578 | inf_ptrace_mourn_inferior (void) | |
579 | { | |
580 | unpush_target (ptrace_ops_hack); | |
581 | generic_mourn_inferior (); | |
582 | } | |
583 | ||
584 | static int | |
585 | inf_ptrace_can_run (void) | |
586 | { | |
587 | return 1; | |
588 | } | |
589 | ||
590 | /* Send a SIGINT to the process group. This acts just like the user | |
591 | typed a ^C on the controlling terminal. | |
592 | ||
593 | XXX - This may not be correct for all systems. Some may want to | |
594 | use killpg() instead of kill (-pgrp). */ | |
595 | ||
596 | static void | |
597 | inf_ptrace_stop (void) | |
598 | { | |
599 | kill (-inferior_process_group, SIGINT); | |
600 | } | |
601 | ||
602 | /* Perform a partial transfer to/from the specified object. For | |
603 | memory transfers, fall back to the old memory xfer functions. */ | |
604 | ||
605 | static LONGEST | |
606 | inf_ptrace_xfer_partial (struct target_ops *ops, enum target_object object, | |
607 | const char *annex, void *readbuf, | |
608 | const void *writebuf, ULONGEST offset, LONGEST len) | |
609 | { | |
610 | switch (object) | |
611 | { | |
612 | case TARGET_OBJECT_MEMORY: | |
613 | if (readbuf) | |
614 | return inf_ptrace_xfer_memory (offset, readbuf, len, 0 /*write */ , | |
615 | NULL, ops); | |
616 | if (writebuf) | |
617 | return inf_ptrace_xfer_memory (offset, readbuf, len, 1 /*write */ , | |
618 | NULL, ops); | |
619 | return -1; | |
620 | ||
621 | case TARGET_OBJECT_UNWIND_TABLE: | |
622 | return -1; | |
623 | ||
624 | case TARGET_OBJECT_AUXV: | |
625 | return -1; | |
626 | ||
627 | case TARGET_OBJECT_WCOOKIE: | |
628 | return -1; | |
629 | ||
630 | default: | |
631 | return -1; | |
632 | } | |
633 | } | |
634 | ||
635 | static char * | |
636 | inf_ptrace_pid_to_str (ptid_t ptid) | |
637 | { | |
638 | return normal_pid_to_str (ptid); | |
639 | } | |
640 | ||
641 | struct target_ops * | |
642 | inf_ptrace_target (void) | |
643 | { | |
644 | struct target_ops *t = inf_child_target (); | |
645 | t->to_open = inf_ptrace_open; | |
646 | t->to_attach = inf_ptrace_attach; | |
647 | t->to_post_attach = inf_ptrace_post_attach; | |
648 | t->to_detach = inf_ptrace_detach; | |
649 | t->to_resume = inf_ptrace_resume; | |
650 | t->to_wait = inf_ptrace_wait; | |
651 | t->to_post_wait = inf_ptrace_post_wait; | |
652 | t->to_prepare_to_store = inf_ptrace_prepare_to_store; | |
653 | t->to_xfer_memory = inf_ptrace_xfer_memory; | |
654 | t->to_xfer_partial = inf_ptrace_xfer_partial; | |
655 | t->to_files_info = inf_ptrace_files_info; | |
656 | t->to_kill = inf_ptrace_kill_inferior; | |
657 | t->to_create_inferior = inf_ptrace_create_inferior; | |
658 | t->to_post_startup_inferior = inf_ptrace_post_startup_inferior; | |
659 | t->to_acknowledge_created_inferior = | |
660 | inf_ptrace_acknowledge_created_inferior; | |
661 | t->to_insert_fork_catchpoint = inf_ptrace_insert_fork_catchpoint; | |
662 | t->to_remove_fork_catchpoint = inf_ptrace_remove_fork_catchpoint; | |
663 | t->to_insert_vfork_catchpoint = inf_ptrace_insert_vfork_catchpoint; | |
664 | t->to_remove_vfork_catchpoint = inf_ptrace_remove_vfork_catchpoint; | |
665 | t->to_follow_fork = inf_ptrace_follow_fork; | |
666 | t->to_insert_exec_catchpoint = inf_ptrace_insert_exec_catchpoint; | |
667 | t->to_remove_exec_catchpoint = inf_ptrace_remove_exec_catchpoint; | |
668 | t->to_reported_exec_events_per_exec_call = | |
669 | inf_ptrace_reported_exec_events_per_exec_call; | |
670 | t->to_has_exited = inf_ptrace_has_exited; | |
671 | t->to_mourn_inferior = inf_ptrace_mourn_inferior; | |
672 | t->to_can_run = inf_ptrace_can_run; | |
673 | t->to_thread_alive = inf_ptrace_thread_alive; | |
674 | t->to_pid_to_str = inf_ptrace_pid_to_str; | |
675 | t->to_stop = inf_ptrace_stop; | |
676 | t->to_stratum = process_stratum; | |
677 | t->to_has_all_memory = 1; | |
678 | t->to_has_memory = 1; | |
679 | t->to_has_stack = 1; | |
680 | t->to_has_registers = 1; | |
681 | t->to_has_execution = 1; | |
682 | t->to_magic = OPS_MAGIC; | |
683 | ptrace_ops_hack = t; | |
684 | return t; | |
685 | } |