Commit | Line | Data |
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35f5886e | 1 | /* Machine independent support for SVR4 /proc (process file system) for GDB. |
2592eef8 | 2 | Copyright 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc. |
35f5886e FF |
3 | Written by Fred Fish at Cygnus Support. |
4 | ||
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
20 | ||
21 | ||
22 | /* N O T E S | |
23 | ||
24 | For information on the details of using /proc consult section proc(4) | |
25 | in the UNIX System V Release 4 System Administrator's Reference Manual. | |
26 | ||
27 | The general register and floating point register sets are manipulated by | |
28 | separate ioctl's. This file makes the assumption that if FP0_REGNUM is | |
29 | defined, then support for the floating point register set is desired, | |
30 | regardless of whether or not the actual target has floating point hardware. | |
31 | ||
32 | */ | |
33 | ||
34 | ||
5129100c | 35 | #include "defs.h" |
35f5886e | 36 | |
08f74b92 | 37 | #include <sys/types.h> |
407a8389 | 38 | #include <time.h> |
2592eef8 PS |
39 | #include <sys/fault.h> |
40 | #include <sys/syscall.h> | |
35f5886e FF |
41 | #include <sys/procfs.h> |
42 | #include <fcntl.h> | |
43 | #include <errno.h> | |
51b57ded | 44 | #include <string.h> |
de43d7d0 SG |
45 | #include <stropts.h> |
46 | #include <poll.h> | |
08f74b92 JK |
47 | #include <unistd.h> |
48 | #include <sys/stat.h> | |
35f5886e | 49 | |
35f5886e FF |
50 | #include "inferior.h" |
51 | #include "target.h" | |
51b57ded | 52 | #include "command.h" |
3fbdd536 | 53 | #include "gdbcore.h" |
cc221e76 FF |
54 | |
55 | #define MAX_SYSCALLS 256 /* Maximum number of syscalls for table */ | |
35f5886e FF |
56 | |
57 | #ifndef PROC_NAME_FMT | |
6c316cfd | 58 | #define PROC_NAME_FMT "/proc/%05d" |
35f5886e FF |
59 | #endif |
60 | ||
3fbdd536 JG |
61 | extern struct target_ops procfs_ops; /* Forward declaration */ |
62 | ||
35f5886e FF |
63 | #if 1 /* FIXME: Gross and ugly hack to resolve coredep.c global */ |
64 | CORE_ADDR kernel_u_addr; | |
65 | #endif | |
66 | ||
cc221e76 FF |
67 | #ifdef BROKEN_SIGINFO_H /* Workaround broken SGS <sys/siginfo.h> */ |
68 | #undef si_pid | |
69 | #define si_pid _data._proc.pid | |
70 | #undef si_uid | |
71 | #define si_uid _data._proc._pdata._kill.uid | |
72 | #endif /* BROKEN_SIGINFO_H */ | |
73 | ||
35f5886e FF |
74 | /* All access to the inferior, either one started by gdb or one that has |
75 | been attached to, is controlled by an instance of a procinfo structure, | |
76 | defined below. Since gdb currently only handles one inferior at a time, | |
a39ad5ce FF |
77 | the procinfo structure for the inferior is statically allocated and |
78 | only one exists at any given time. There is a separate procinfo | |
79 | structure for use by the "info proc" command, so that we can print | |
80 | useful information about any random process without interfering with | |
81 | the inferior's procinfo information. */ | |
35f5886e FF |
82 | |
83 | struct procinfo { | |
de43d7d0 | 84 | struct procinfo *next; |
35f5886e FF |
85 | int pid; /* Process ID of inferior */ |
86 | int fd; /* File descriptor for /proc entry */ | |
87 | char *pathname; /* Pathname to /proc entry */ | |
de43d7d0 | 88 | int had_event; /* poll/select says something happened */ |
35f5886e | 89 | int was_stopped; /* Nonzero if was stopped prior to attach */ |
d65eee73 | 90 | int nopass_next_sigstop; /* Don't pass a sigstop on next resume */ |
35f5886e FF |
91 | prrun_t prrun; /* Control state when it is run */ |
92 | prstatus_t prstatus; /* Current process status info */ | |
93 | gregset_t gregset; /* General register set */ | |
94 | fpregset_t fpregset; /* Floating point register set */ | |
95 | fltset_t fltset; /* Current traced hardware fault set */ | |
96 | sigset_t trace; /* Current traced signal set */ | |
97 | sysset_t exitset; /* Current traced system call exit set */ | |
98 | sysset_t entryset; /* Current traced system call entry set */ | |
cc221e76 FF |
99 | fltset_t saved_fltset; /* Saved traced hardware fault set */ |
100 | sigset_t saved_trace; /* Saved traced signal set */ | |
101 | sigset_t saved_sighold; /* Saved held signal set */ | |
102 | sysset_t saved_exitset; /* Saved traced system call exit set */ | |
103 | sysset_t saved_entryset; /* Saved traced system call entry set */ | |
a39ad5ce FF |
104 | }; |
105 | ||
de43d7d0 SG |
106 | /* List of inferior process information */ |
107 | static struct procinfo *procinfo_list = NULL; | |
108 | ||
109 | static struct pollfd *poll_list; /* pollfds used for waiting on /proc */ | |
110 | ||
111 | static int num_poll_list = 0; /* Number of entries in poll_list */ | |
112 | ||
113 | static int last_resume_pid = -1; /* Last pid used with procfs_resume */ | |
35f5886e | 114 | |
cc221e76 FF |
115 | /* Much of the information used in the /proc interface, particularly for |
116 | printing status information, is kept as tables of structures of the | |
117 | following form. These tables can be used to map numeric values to | |
118 | their symbolic names and to a string that describes their specific use. */ | |
119 | ||
120 | struct trans { | |
121 | int value; /* The numeric value */ | |
122 | char *name; /* The equivalent symbolic value */ | |
123 | char *desc; /* Short description of value */ | |
124 | }; | |
125 | ||
126 | /* Translate bits in the pr_flags member of the prstatus structure, into the | |
127 | names and desc information. */ | |
128 | ||
129 | static struct trans pr_flag_table[] = | |
130 | { | |
131 | #if defined (PR_STOPPED) | |
132 | PR_STOPPED, "PR_STOPPED", "Process is stopped", | |
133 | #endif | |
134 | #if defined (PR_ISTOP) | |
135 | PR_ISTOP, "PR_ISTOP", "Stopped on an event of interest", | |
136 | #endif | |
137 | #if defined (PR_DSTOP) | |
138 | PR_DSTOP, "PR_DSTOP", "A stop directive is in effect", | |
139 | #endif | |
140 | #if defined (PR_ASLEEP) | |
141 | PR_ASLEEP, "PR_ASLEEP", "Sleeping in an interruptible system call", | |
142 | #endif | |
143 | #if defined (PR_FORK) | |
144 | PR_FORK, "PR_FORK", "Inherit-on-fork is in effect", | |
145 | #endif | |
146 | #if defined (PR_RLC) | |
147 | PR_RLC, "PR_RLC", "Run-on-last-close is in effect", | |
148 | #endif | |
149 | #if defined (PR_PTRACE) | |
150 | PR_PTRACE, "PR_PTRACE", "Process is being controlled by ptrace", | |
151 | #endif | |
152 | #if defined (PR_PCINVAL) | |
153 | PR_PCINVAL, "PR_PCINVAL", "PC refers to an invalid virtual address", | |
154 | #endif | |
155 | #if defined (PR_ISSYS) | |
156 | PR_ISSYS, "PR_ISSYS", "Is a system process", | |
5c1c5e67 FF |
157 | #endif |
158 | #if defined (PR_STEP) | |
159 | PR_STEP, "PR_STEP", "Process has single step pending", | |
160 | #endif | |
161 | #if defined (PR_KLC) | |
162 | PR_KLC, "PR_KLC", "Kill-on-last-close is in effect", | |
163 | #endif | |
164 | #if defined (PR_ASYNC) | |
165 | PR_ASYNC, "PR_ASYNC", "Asynchronous stop is in effect", | |
166 | #endif | |
167 | #if defined (PR_PCOMPAT) | |
168 | PR_PCOMPAT, "PR_PCOMPAT", "Ptrace compatibility mode in effect", | |
cc221e76 FF |
169 | #endif |
170 | 0, NULL, NULL | |
171 | }; | |
172 | ||
173 | /* Translate values in the pr_why field of the prstatus struct. */ | |
174 | ||
175 | static struct trans pr_why_table[] = | |
176 | { | |
177 | #if defined (PR_REQUESTED) | |
178 | PR_REQUESTED, "PR_REQUESTED", "Directed to stop via PIOCSTOP/PIOCWSTOP", | |
179 | #endif | |
180 | #if defined (PR_SIGNALLED) | |
181 | PR_SIGNALLED, "PR_SIGNALLED", "Receipt of a traced signal", | |
182 | #endif | |
183 | #if defined (PR_FAULTED) | |
184 | PR_FAULTED, "PR_FAULTED", "Incurred a traced hardware fault", | |
185 | #endif | |
186 | #if defined (PR_SYSENTRY) | |
187 | PR_SYSENTRY, "PR_SYSENTRY", "Entry to a traced system call", | |
188 | #endif | |
189 | #if defined (PR_SYSEXIT) | |
190 | PR_SYSEXIT, "PR_SYSEXIT", "Exit from a traced system call", | |
191 | #endif | |
192 | #if defined (PR_JOBCONTROL) | |
193 | PR_JOBCONTROL, "PR_JOBCONTROL", "Default job control stop signal action", | |
5c1c5e67 FF |
194 | #endif |
195 | #if defined (PR_SUSPENDED) | |
196 | PR_SUSPENDED, "PR_SUSPENDED", "Process suspended", | |
cc221e76 FF |
197 | #endif |
198 | 0, NULL, NULL | |
199 | }; | |
200 | ||
201 | /* Hardware fault translation table. */ | |
202 | ||
203 | static struct trans faults_table[] = | |
204 | { | |
205 | #if defined (FLTILL) | |
206 | FLTILL, "FLTILL", "Illegal instruction", | |
207 | #endif | |
208 | #if defined (FLTPRIV) | |
209 | FLTPRIV, "FLTPRIV", "Privileged instruction", | |
210 | #endif | |
211 | #if defined (FLTBPT) | |
212 | FLTBPT, "FLTBPT", "Breakpoint trap", | |
213 | #endif | |
214 | #if defined (FLTTRACE) | |
215 | FLTTRACE, "FLTTRACE", "Trace trap", | |
216 | #endif | |
217 | #if defined (FLTACCESS) | |
218 | FLTACCESS, "FLTACCESS", "Memory access fault", | |
219 | #endif | |
220 | #if defined (FLTBOUNDS) | |
221 | FLTBOUNDS, "FLTBOUNDS", "Memory bounds violation", | |
222 | #endif | |
223 | #if defined (FLTIOVF) | |
224 | FLTIOVF, "FLTIOVF", "Integer overflow", | |
225 | #endif | |
226 | #if defined (FLTIZDIV) | |
227 | FLTIZDIV, "FLTIZDIV", "Integer zero divide", | |
228 | #endif | |
229 | #if defined (FLTFPE) | |
230 | FLTFPE, "FLTFPE", "Floating-point exception", | |
231 | #endif | |
232 | #if defined (FLTSTACK) | |
233 | FLTSTACK, "FLTSTACK", "Unrecoverable stack fault", | |
234 | #endif | |
235 | #if defined (FLTPAGE) | |
236 | FLTPAGE, "FLTPAGE", "Recoverable page fault", | |
237 | #endif | |
238 | 0, NULL, NULL | |
239 | }; | |
240 | ||
241 | /* Translation table for signal generation information. See UNIX System | |
242 | V Release 4 Programmer's Reference Manual, siginfo(5). */ | |
243 | ||
244 | static struct sigcode { | |
245 | int signo; | |
246 | int code; | |
247 | char *codename; | |
248 | char *desc; | |
249 | } siginfo_table[] = { | |
250 | #if defined (SIGILL) && defined (ILL_ILLOPC) | |
251 | SIGILL, ILL_ILLOPC, "ILL_ILLOPC", "Illegal opcode", | |
252 | #endif | |
253 | #if defined (SIGILL) && defined (ILL_ILLOPN) | |
254 | SIGILL, ILL_ILLOPN, "ILL_ILLOPN", "Illegal operand", | |
255 | #endif | |
256 | #if defined (SIGILL) && defined (ILL_ILLADR) | |
257 | SIGILL, ILL_ILLADR, "ILL_ILLADR", "Illegal addressing mode", | |
258 | #endif | |
259 | #if defined (SIGILL) && defined (ILL_ILLTRP) | |
260 | SIGILL, ILL_ILLTRP, "ILL_ILLTRP", "Illegal trap", | |
261 | #endif | |
262 | #if defined (SIGILL) && defined (ILL_PRVOPC) | |
263 | SIGILL, ILL_PRVOPC, "ILL_PRVOPC", "Privileged opcode", | |
264 | #endif | |
265 | #if defined (SIGILL) && defined (ILL_PRVREG) | |
266 | SIGILL, ILL_PRVREG, "ILL_PRVREG", "Privileged register", | |
267 | #endif | |
268 | #if defined (SIGILL) && defined (ILL_COPROC) | |
269 | SIGILL, ILL_COPROC, "ILL_COPROC", "Coprocessor error", | |
270 | #endif | |
271 | #if defined (SIGILL) && defined (ILL_BADSTK) | |
272 | SIGILL, ILL_BADSTK, "ILL_BADSTK", "Internal stack error", | |
273 | #endif | |
274 | #if defined (SIGFPE) && defined (FPE_INTDIV) | |
275 | SIGFPE, FPE_INTDIV, "FPE_INTDIV", "Integer divide by zero", | |
276 | #endif | |
277 | #if defined (SIGFPE) && defined (FPE_INTOVF) | |
278 | SIGFPE, FPE_INTOVF, "FPE_INTOVF", "Integer overflow", | |
279 | #endif | |
280 | #if defined (SIGFPE) && defined (FPE_FLTDIV) | |
281 | SIGFPE, FPE_FLTDIV, "FPE_FLTDIV", "Floating point divide by zero", | |
282 | #endif | |
283 | #if defined (SIGFPE) && defined (FPE_FLTOVF) | |
284 | SIGFPE, FPE_FLTOVF, "FPE_FLTOVF", "Floating point overflow", | |
285 | #endif | |
286 | #if defined (SIGFPE) && defined (FPE_FLTUND) | |
287 | SIGFPE, FPE_FLTUND, "FPE_FLTUND", "Floating point underflow", | |
288 | #endif | |
289 | #if defined (SIGFPE) && defined (FPE_FLTRES) | |
290 | SIGFPE, FPE_FLTRES, "FPE_FLTRES", "Floating point inexact result", | |
291 | #endif | |
292 | #if defined (SIGFPE) && defined (FPE_FLTINV) | |
293 | SIGFPE, FPE_FLTINV, "FPE_FLTINV", "Invalid floating point operation", | |
294 | #endif | |
295 | #if defined (SIGFPE) && defined (FPE_FLTSUB) | |
296 | SIGFPE, FPE_FLTSUB, "FPE_FLTSUB", "Subscript out of range", | |
297 | #endif | |
298 | #if defined (SIGSEGV) && defined (SEGV_MAPERR) | |
299 | SIGSEGV, SEGV_MAPERR, "SEGV_MAPERR", "Address not mapped to object", | |
300 | #endif | |
301 | #if defined (SIGSEGV) && defined (SEGV_ACCERR) | |
302 | SIGSEGV, SEGV_ACCERR, "SEGV_ACCERR", "Invalid permissions for object", | |
303 | #endif | |
304 | #if defined (SIGBUS) && defined (BUS_ADRALN) | |
305 | SIGBUS, BUS_ADRALN, "BUS_ADRALN", "Invalid address alignment", | |
306 | #endif | |
307 | #if defined (SIGBUS) && defined (BUS_ADRERR) | |
308 | SIGBUS, BUS_ADRERR, "BUS_ADRERR", "Non-existent physical address", | |
309 | #endif | |
310 | #if defined (SIGBUS) && defined (BUS_OBJERR) | |
311 | SIGBUS, BUS_OBJERR, "BUS_OBJERR", "Object specific hardware error", | |
312 | #endif | |
313 | #if defined (SIGTRAP) && defined (TRAP_BRKPT) | |
314 | SIGTRAP, TRAP_BRKPT, "TRAP_BRKPT", "Process breakpoint", | |
315 | #endif | |
316 | #if defined (SIGTRAP) && defined (TRAP_TRACE) | |
317 | SIGTRAP, TRAP_TRACE, "TRAP_TRACE", "Process trace trap", | |
318 | #endif | |
319 | #if defined (SIGCLD) && defined (CLD_EXITED) | |
320 | SIGCLD, CLD_EXITED, "CLD_EXITED", "Child has exited", | |
321 | #endif | |
322 | #if defined (SIGCLD) && defined (CLD_KILLED) | |
323 | SIGCLD, CLD_KILLED, "CLD_KILLED", "Child was killed", | |
324 | #endif | |
325 | #if defined (SIGCLD) && defined (CLD_DUMPED) | |
326 | SIGCLD, CLD_DUMPED, "CLD_DUMPED", "Child has terminated abnormally", | |
327 | #endif | |
328 | #if defined (SIGCLD) && defined (CLD_TRAPPED) | |
329 | SIGCLD, CLD_TRAPPED, "CLD_TRAPPED", "Traced child has trapped", | |
330 | #endif | |
331 | #if defined (SIGCLD) && defined (CLD_STOPPED) | |
332 | SIGCLD, CLD_STOPPED, "CLD_STOPPED", "Child has stopped", | |
333 | #endif | |
334 | #if defined (SIGCLD) && defined (CLD_CONTINUED) | |
335 | SIGCLD, CLD_CONTINUED, "CLD_CONTINUED", "Stopped child had continued", | |
336 | #endif | |
337 | #if defined (SIGPOLL) && defined (POLL_IN) | |
338 | SIGPOLL, POLL_IN, "POLL_IN", "Input input available", | |
339 | #endif | |
340 | #if defined (SIGPOLL) && defined (POLL_OUT) | |
341 | SIGPOLL, POLL_OUT, "POLL_OUT", "Output buffers available", | |
342 | #endif | |
343 | #if defined (SIGPOLL) && defined (POLL_MSG) | |
344 | SIGPOLL, POLL_MSG, "POLL_MSG", "Input message available", | |
345 | #endif | |
346 | #if defined (SIGPOLL) && defined (POLL_ERR) | |
347 | SIGPOLL, POLL_ERR, "POLL_ERR", "I/O error", | |
348 | #endif | |
349 | #if defined (SIGPOLL) && defined (POLL_PRI) | |
350 | SIGPOLL, POLL_PRI, "POLL_PRI", "High priority input available", | |
351 | #endif | |
352 | #if defined (SIGPOLL) && defined (POLL_HUP) | |
353 | SIGPOLL, POLL_HUP, "POLL_HUP", "Device disconnected", | |
354 | #endif | |
355 | 0, 0, NULL, NULL | |
356 | }; | |
357 | ||
cc221e76 FF |
358 | static char *syscall_table[MAX_SYSCALLS]; |
359 | ||
1ab3bf1b JG |
360 | /* Prototypes for local functions */ |
361 | ||
6b801388 FF |
362 | static void |
363 | set_proc_siginfo PARAMS ((struct procinfo *, int)); | |
364 | ||
cc221e76 FF |
365 | static void |
366 | init_syscall_table PARAMS ((void)); | |
367 | ||
368 | static char * | |
369 | syscallname PARAMS ((int)); | |
370 | ||
371 | static char * | |
372 | signalname PARAMS ((int)); | |
373 | ||
4ace50a5 FF |
374 | static char * |
375 | errnoname PARAMS ((int)); | |
376 | ||
1ab3bf1b | 377 | static int |
de43d7d0 | 378 | proc_address_to_fd PARAMS ((struct procinfo *, CORE_ADDR, int)); |
1ab3bf1b JG |
379 | |
380 | static int | |
ec8ceca3 | 381 | open_proc_file PARAMS ((int, struct procinfo *, int)); |
1ab3bf1b JG |
382 | |
383 | static void | |
384 | close_proc_file PARAMS ((struct procinfo *)); | |
385 | ||
386 | static void | |
de43d7d0 | 387 | unconditionally_kill_inferior PARAMS ((struct procinfo *)); |
1ab3bf1b | 388 | |
de43d7d0 | 389 | static NORETURN void |
6f54efdc | 390 | proc_init_failed PARAMS ((struct procinfo *, char *)) ATTR_NORETURN; |
1ab3bf1b JG |
391 | |
392 | static void | |
cc221e76 FF |
393 | info_proc PARAMS ((char *, int)); |
394 | ||
395 | static void | |
396 | info_proc_flags PARAMS ((struct procinfo *, int)); | |
397 | ||
398 | static void | |
399 | info_proc_stop PARAMS ((struct procinfo *, int)); | |
1ab3bf1b JG |
400 | |
401 | static void | |
cc221e76 FF |
402 | info_proc_siginfo PARAMS ((struct procinfo *, int)); |
403 | ||
404 | static void | |
405 | info_proc_syscalls PARAMS ((struct procinfo *, int)); | |
406 | ||
407 | static void | |
408 | info_proc_mappings PARAMS ((struct procinfo *, int)); | |
409 | ||
410 | static void | |
411 | info_proc_signals PARAMS ((struct procinfo *, int)); | |
412 | ||
413 | static void | |
414 | info_proc_faults PARAMS ((struct procinfo *, int)); | |
1ab3bf1b JG |
415 | |
416 | static char * | |
417 | mappingflags PARAMS ((long)); | |
418 | ||
cc221e76 FF |
419 | static char * |
420 | lookupname PARAMS ((struct trans *, unsigned int, char *)); | |
421 | ||
422 | static char * | |
423 | lookupdesc PARAMS ((struct trans *, unsigned int)); | |
424 | ||
3fbdd536 JG |
425 | static int |
426 | do_attach PARAMS ((int pid)); | |
427 | ||
428 | static void | |
429 | do_detach PARAMS ((int siggnal)); | |
430 | ||
431 | static void | |
432 | procfs_create_inferior PARAMS ((char *, char *, char **)); | |
433 | ||
3950a34e | 434 | static void |
952a820e | 435 | procfs_notice_signals PARAMS ((int pid)); |
de43d7d0 SG |
436 | |
437 | static struct procinfo * | |
438 | find_procinfo PARAMS ((pid_t pid, int okfail)); | |
3950a34e | 439 | |
1ab3bf1b JG |
440 | /* External function prototypes that can't be easily included in any |
441 | header file because the args are typedefs in system include files. */ | |
442 | ||
443 | extern void | |
444 | supply_gregset PARAMS ((gregset_t *)); | |
445 | ||
446 | extern void | |
447 | fill_gregset PARAMS ((gregset_t *, int)); | |
448 | ||
449 | extern void | |
450 | supply_fpregset PARAMS ((fpregset_t *)); | |
451 | ||
452 | extern void | |
453 | fill_fpregset PARAMS ((fpregset_t *, int)); | |
35f5886e | 454 | |
cc221e76 FF |
455 | /* |
456 | ||
de43d7d0 SG |
457 | LOCAL FUNCTION |
458 | ||
459 | find_procinfo -- convert a process id to a struct procinfo | |
460 | ||
461 | SYNOPSIS | |
462 | ||
463 | static struct procinfo * find_procinfo (pid_t pid, int okfail); | |
464 | ||
465 | DESCRIPTION | |
466 | ||
467 | Given a process id, look it up in the procinfo chain. Returns | |
468 | a struct procinfo *. If can't find pid, then call error(), | |
469 | unless okfail is set, in which case, return NULL; | |
470 | */ | |
471 | ||
472 | static struct procinfo * | |
473 | find_procinfo (pid, okfail) | |
474 | pid_t pid; | |
475 | int okfail; | |
476 | { | |
477 | struct procinfo *procinfo; | |
478 | ||
479 | for (procinfo = procinfo_list; procinfo; procinfo = procinfo->next) | |
480 | if (procinfo->pid == pid) | |
481 | return procinfo; | |
482 | ||
483 | if (okfail) | |
484 | return NULL; | |
485 | ||
486 | error ("procfs (find_procinfo): Couldn't locate pid %d", pid); | |
487 | } | |
488 | ||
489 | /* | |
490 | ||
7c5d526e SG |
491 | LOCAL MACRO |
492 | ||
493 | current_procinfo -- convert inferior_pid to a struct procinfo | |
494 | ||
495 | SYNOPSIS | |
496 | ||
497 | static struct procinfo * current_procinfo; | |
498 | ||
499 | DESCRIPTION | |
500 | ||
501 | Looks up inferior_pid in the procinfo chain. Always returns a | |
502 | struct procinfo *. If process can't be found, we error() out. | |
503 | */ | |
504 | ||
505 | #define current_procinfo find_procinfo (inferior_pid, 0) | |
506 | ||
507 | /* | |
508 | ||
de43d7d0 SG |
509 | LOCAL FUNCTION |
510 | ||
511 | add_fd -- Add the fd to the poll/select list | |
512 | ||
513 | SYNOPSIS | |
514 | ||
515 | static void add_fd (struct procinfo *); | |
516 | ||
517 | DESCRIPTION | |
518 | ||
519 | Add the fd of the supplied procinfo to the list of fds used for | |
520 | poll/select operations. | |
521 | */ | |
522 | ||
523 | static void | |
524 | add_fd (pi) | |
525 | struct procinfo *pi; | |
526 | { | |
527 | if (num_poll_list <= 0) | |
528 | poll_list = (struct pollfd *) xmalloc (sizeof (struct pollfd)); | |
529 | else | |
530 | poll_list = (struct pollfd *) xrealloc (poll_list, | |
531 | (num_poll_list + 1) | |
532 | * sizeof (struct pollfd)); | |
533 | poll_list[num_poll_list].fd = pi->fd; | |
534 | poll_list[num_poll_list].events = POLLPRI; | |
535 | ||
536 | num_poll_list++; | |
537 | } | |
538 | ||
539 | static void | |
540 | remove_fd (pi) | |
541 | struct procinfo *pi; | |
542 | { | |
543 | int i; | |
544 | ||
545 | for (i = 0; i < num_poll_list; i++) | |
546 | { | |
547 | if (poll_list[i].fd == pi->fd) | |
548 | { | |
549 | if (i != num_poll_list - 1) | |
550 | memcpy (poll_list, poll_list + i + 1, | |
551 | (num_poll_list - i - 1) * sizeof (struct pollfd)); | |
552 | ||
553 | num_poll_list--; | |
554 | ||
555 | if (num_poll_list == 0) | |
556 | free (poll_list); | |
557 | else | |
558 | poll_list = (struct pollfd *) xrealloc (poll_list, | |
559 | num_poll_list | |
560 | * sizeof (struct pollfd)); | |
561 | return; | |
562 | } | |
563 | } | |
564 | } | |
565 | ||
7c5d526e | 566 | #define LOSING_POLL unixware_sux |
de43d7d0 | 567 | |
7c5d526e SG |
568 | static struct procinfo * |
569 | wait_fd () | |
570 | { | |
571 | struct procinfo *pi; | |
572 | int num_fds; | |
573 | int i; | |
de43d7d0 | 574 | |
1e75b5f5 | 575 | set_sigint_trap (); /* Causes SIGINT to be passed on to the |
7c5d526e | 576 | attached process. */ |
429f1c9f | 577 | set_sigio_trap (); |
de43d7d0 | 578 | |
7c5d526e SG |
579 | #ifndef LOSING_POLL |
580 | num_fds = poll (poll_list, num_poll_list, -1); | |
581 | #else | |
582 | pi = current_procinfo; | |
de43d7d0 | 583 | |
8afd05c0 | 584 | while (ioctl (pi->fd, PIOCWSTOP, &pi->prstatus) < 0) |
7c5d526e | 585 | { |
cef0333e PS |
586 | if (errno == ENOENT) |
587 | { | |
588 | /* Process exited. */ | |
589 | pi->prstatus.pr_flags = 0; | |
590 | break; | |
591 | } | |
592 | else if (errno != EINTR) | |
8afd05c0 JK |
593 | { |
594 | print_sys_errmsg (pi->pathname, errno); | |
595 | error ("PIOCWSTOP failed"); | |
596 | } | |
7c5d526e | 597 | } |
fb63d460 | 598 | pi->had_event = 1; |
7c5d526e SG |
599 | #endif |
600 | ||
1e75b5f5 | 601 | clear_sigint_trap (); |
429f1c9f | 602 | clear_sigio_trap (); |
de43d7d0 | 603 | |
7c5d526e | 604 | #ifndef LOSING_POLL |
de43d7d0 | 605 | |
7c5d526e SG |
606 | if (num_fds <= 0) |
607 | { | |
608 | print_sys_errmsg ("poll failed\n", errno); | |
609 | error ("Poll failed, returned %d", num_fds); | |
610 | } | |
611 | ||
612 | for (i = 0; i < num_poll_list && num_fds > 0; i++) | |
613 | { | |
614 | if ((poll_list[i].revents & (POLLPRI|POLLERR|POLLHUP|POLLNVAL)) == 0) | |
615 | continue; | |
616 | for (pi = procinfo_list; pi; pi = pi->next) | |
617 | { | |
618 | if (poll_list[i].fd == pi->fd) | |
619 | { | |
620 | if (ioctl (pi->fd, PIOCSTATUS, &pi->prstatus) < 0) | |
621 | { | |
622 | print_sys_errmsg (pi->pathname, errno); | |
623 | error ("PIOCSTATUS failed"); | |
624 | } | |
625 | num_fds--; | |
626 | pi->had_event = 1; | |
627 | break; | |
628 | } | |
629 | } | |
630 | if (!pi) | |
631 | error ("procfs_wait: Couldn't find procinfo for fd %d\n", | |
632 | poll_list[i].fd); | |
633 | } | |
634 | #endif /* LOSING_POLL */ | |
635 | ||
636 | return pi; | |
637 | } | |
de43d7d0 SG |
638 | |
639 | /* | |
640 | ||
cc221e76 FF |
641 | LOCAL FUNCTION |
642 | ||
643 | lookupdesc -- translate a value to a summary desc string | |
644 | ||
645 | SYNOPSIS | |
646 | ||
647 | static char *lookupdesc (struct trans *transp, unsigned int val); | |
648 | ||
649 | DESCRIPTION | |
650 | ||
651 | Given a pointer to a translation table and a value to be translated, | |
652 | lookup the desc string and return it. | |
653 | */ | |
654 | ||
655 | static char * | |
656 | lookupdesc (transp, val) | |
657 | struct trans *transp; | |
658 | unsigned int val; | |
659 | { | |
660 | char *desc; | |
661 | ||
662 | for (desc = NULL; transp -> name != NULL; transp++) | |
663 | { | |
664 | if (transp -> value == val) | |
665 | { | |
666 | desc = transp -> desc; | |
667 | break; | |
668 | } | |
669 | } | |
670 | ||
671 | /* Didn't find a translation for the specified value, set a default one. */ | |
672 | ||
673 | if (desc == NULL) | |
674 | { | |
675 | desc = "Unknown"; | |
676 | } | |
677 | return (desc); | |
678 | } | |
679 | ||
680 | /* | |
681 | ||
682 | LOCAL FUNCTION | |
683 | ||
684 | lookupname -- translate a value to symbolic name | |
685 | ||
686 | SYNOPSIS | |
687 | ||
688 | static char *lookupname (struct trans *transp, unsigned int val, | |
689 | char *prefix); | |
690 | ||
691 | DESCRIPTION | |
692 | ||
693 | Given a pointer to a translation table, a value to be translated, | |
694 | and a default prefix to return if the value can't be translated, | |
695 | match the value with one of the translation table entries and | |
696 | return a pointer to the symbolic name. | |
697 | ||
698 | If no match is found it just returns the value as a printable string, | |
699 | with the given prefix. The previous such value, if any, is freed | |
700 | at this time. | |
701 | */ | |
702 | ||
703 | static char * | |
704 | lookupname (transp, val, prefix) | |
705 | struct trans *transp; | |
706 | unsigned int val; | |
707 | char *prefix; | |
708 | { | |
709 | static char *locbuf; | |
710 | char *name; | |
711 | ||
712 | for (name = NULL; transp -> name != NULL; transp++) | |
713 | { | |
714 | if (transp -> value == val) | |
715 | { | |
716 | name = transp -> name; | |
717 | break; | |
718 | } | |
719 | } | |
720 | ||
721 | /* Didn't find a translation for the specified value, build a default | |
722 | one using the specified prefix and return it. The lifetime of | |
723 | the value is only until the next one is needed. */ | |
724 | ||
725 | if (name == NULL) | |
726 | { | |
727 | if (locbuf != NULL) | |
728 | { | |
729 | free (locbuf); | |
730 | } | |
731 | locbuf = xmalloc (strlen (prefix) + 16); | |
4ed3a9ea | 732 | sprintf (locbuf, "%s %u", prefix, val); |
cc221e76 FF |
733 | name = locbuf; |
734 | } | |
735 | return (name); | |
736 | } | |
737 | ||
738 | static char * | |
739 | sigcodename (sip) | |
740 | siginfo_t *sip; | |
741 | { | |
742 | struct sigcode *scp; | |
743 | char *name = NULL; | |
744 | static char locbuf[32]; | |
745 | ||
746 | for (scp = siginfo_table; scp -> codename != NULL; scp++) | |
747 | { | |
748 | if ((scp -> signo == sip -> si_signo) && | |
749 | (scp -> code == sip -> si_code)) | |
750 | { | |
751 | name = scp -> codename; | |
752 | break; | |
753 | } | |
754 | } | |
755 | if (name == NULL) | |
756 | { | |
4ed3a9ea | 757 | sprintf (locbuf, "sigcode %u", sip -> si_signo); |
cc221e76 FF |
758 | name = locbuf; |
759 | } | |
760 | return (name); | |
761 | } | |
762 | ||
3fbdd536 JG |
763 | static char * |
764 | sigcodedesc (sip) | |
cc221e76 FF |
765 | siginfo_t *sip; |
766 | { | |
767 | struct sigcode *scp; | |
768 | char *desc = NULL; | |
769 | ||
770 | for (scp = siginfo_table; scp -> codename != NULL; scp++) | |
771 | { | |
772 | if ((scp -> signo == sip -> si_signo) && | |
773 | (scp -> code == sip -> si_code)) | |
774 | { | |
775 | desc = scp -> desc; | |
776 | break; | |
777 | } | |
778 | } | |
779 | if (desc == NULL) | |
780 | { | |
781 | desc = "Unrecognized signal or trap use"; | |
782 | } | |
783 | return (desc); | |
784 | } | |
785 | ||
786 | /* | |
787 | ||
788 | LOCAL FUNCTION | |
789 | ||
790 | syscallname - translate a system call number into a system call name | |
791 | ||
792 | SYNOPSIS | |
793 | ||
794 | char *syscallname (int syscallnum) | |
795 | ||
796 | DESCRIPTION | |
797 | ||
798 | Given a system call number, translate it into the printable name | |
799 | of a system call, or into "syscall <num>" if it is an unknown | |
800 | number. | |
801 | */ | |
802 | ||
803 | static char * | |
804 | syscallname (syscallnum) | |
805 | int syscallnum; | |
806 | { | |
807 | static char locbuf[32]; | |
808 | char *rtnval; | |
809 | ||
810 | if (syscallnum >= 0 && syscallnum < MAX_SYSCALLS) | |
811 | { | |
812 | rtnval = syscall_table[syscallnum]; | |
813 | } | |
814 | else | |
815 | { | |
4ed3a9ea | 816 | sprintf (locbuf, "syscall %u", syscallnum); |
cc221e76 FF |
817 | rtnval = locbuf; |
818 | } | |
819 | return (rtnval); | |
820 | } | |
821 | ||
822 | /* | |
823 | ||
824 | LOCAL FUNCTION | |
825 | ||
826 | init_syscall_table - initialize syscall translation table | |
827 | ||
828 | SYNOPSIS | |
829 | ||
830 | void init_syscall_table (void) | |
831 | ||
832 | DESCRIPTION | |
833 | ||
834 | Dynamically initialize the translation table to convert system | |
835 | call numbers into printable system call names. Done once per | |
836 | gdb run, on initialization. | |
837 | ||
838 | NOTES | |
839 | ||
840 | This is awfully ugly, but preprocessor tricks to make it prettier | |
841 | tend to be nonportable. | |
842 | */ | |
843 | ||
844 | static void | |
845 | init_syscall_table () | |
846 | { | |
cc221e76 FF |
847 | #if defined (SYS_exit) |
848 | syscall_table[SYS_exit] = "exit"; | |
849 | #endif | |
850 | #if defined (SYS_fork) | |
851 | syscall_table[SYS_fork] = "fork"; | |
852 | #endif | |
853 | #if defined (SYS_read) | |
854 | syscall_table[SYS_read] = "read"; | |
855 | #endif | |
856 | #if defined (SYS_write) | |
857 | syscall_table[SYS_write] = "write"; | |
858 | #endif | |
859 | #if defined (SYS_open) | |
860 | syscall_table[SYS_open] = "open"; | |
861 | #endif | |
862 | #if defined (SYS_close) | |
863 | syscall_table[SYS_close] = "close"; | |
864 | #endif | |
865 | #if defined (SYS_wait) | |
866 | syscall_table[SYS_wait] = "wait"; | |
867 | #endif | |
868 | #if defined (SYS_creat) | |
869 | syscall_table[SYS_creat] = "creat"; | |
870 | #endif | |
871 | #if defined (SYS_link) | |
872 | syscall_table[SYS_link] = "link"; | |
873 | #endif | |
874 | #if defined (SYS_unlink) | |
875 | syscall_table[SYS_unlink] = "unlink"; | |
876 | #endif | |
877 | #if defined (SYS_exec) | |
878 | syscall_table[SYS_exec] = "exec"; | |
879 | #endif | |
880 | #if defined (SYS_execv) | |
881 | syscall_table[SYS_execv] = "execv"; | |
882 | #endif | |
883 | #if defined (SYS_execve) | |
884 | syscall_table[SYS_execve] = "execve"; | |
885 | #endif | |
886 | #if defined (SYS_chdir) | |
887 | syscall_table[SYS_chdir] = "chdir"; | |
888 | #endif | |
889 | #if defined (SYS_time) | |
890 | syscall_table[SYS_time] = "time"; | |
891 | #endif | |
892 | #if defined (SYS_mknod) | |
893 | syscall_table[SYS_mknod] = "mknod"; | |
894 | #endif | |
895 | #if defined (SYS_chmod) | |
896 | syscall_table[SYS_chmod] = "chmod"; | |
897 | #endif | |
898 | #if defined (SYS_chown) | |
899 | syscall_table[SYS_chown] = "chown"; | |
900 | #endif | |
901 | #if defined (SYS_brk) | |
902 | syscall_table[SYS_brk] = "brk"; | |
903 | #endif | |
904 | #if defined (SYS_stat) | |
905 | syscall_table[SYS_stat] = "stat"; | |
906 | #endif | |
907 | #if defined (SYS_lseek) | |
908 | syscall_table[SYS_lseek] = "lseek"; | |
909 | #endif | |
910 | #if defined (SYS_getpid) | |
911 | syscall_table[SYS_getpid] = "getpid"; | |
912 | #endif | |
913 | #if defined (SYS_mount) | |
914 | syscall_table[SYS_mount] = "mount"; | |
915 | #endif | |
916 | #if defined (SYS_umount) | |
917 | syscall_table[SYS_umount] = "umount"; | |
918 | #endif | |
919 | #if defined (SYS_setuid) | |
920 | syscall_table[SYS_setuid] = "setuid"; | |
921 | #endif | |
922 | #if defined (SYS_getuid) | |
923 | syscall_table[SYS_getuid] = "getuid"; | |
924 | #endif | |
925 | #if defined (SYS_stime) | |
926 | syscall_table[SYS_stime] = "stime"; | |
927 | #endif | |
928 | #if defined (SYS_ptrace) | |
929 | syscall_table[SYS_ptrace] = "ptrace"; | |
930 | #endif | |
931 | #if defined (SYS_alarm) | |
932 | syscall_table[SYS_alarm] = "alarm"; | |
933 | #endif | |
934 | #if defined (SYS_fstat) | |
935 | syscall_table[SYS_fstat] = "fstat"; | |
936 | #endif | |
937 | #if defined (SYS_pause) | |
938 | syscall_table[SYS_pause] = "pause"; | |
939 | #endif | |
940 | #if defined (SYS_utime) | |
941 | syscall_table[SYS_utime] = "utime"; | |
942 | #endif | |
943 | #if defined (SYS_stty) | |
944 | syscall_table[SYS_stty] = "stty"; | |
945 | #endif | |
946 | #if defined (SYS_gtty) | |
947 | syscall_table[SYS_gtty] = "gtty"; | |
948 | #endif | |
949 | #if defined (SYS_access) | |
950 | syscall_table[SYS_access] = "access"; | |
951 | #endif | |
952 | #if defined (SYS_nice) | |
953 | syscall_table[SYS_nice] = "nice"; | |
954 | #endif | |
955 | #if defined (SYS_statfs) | |
956 | syscall_table[SYS_statfs] = "statfs"; | |
957 | #endif | |
958 | #if defined (SYS_sync) | |
959 | syscall_table[SYS_sync] = "sync"; | |
960 | #endif | |
961 | #if defined (SYS_kill) | |
962 | syscall_table[SYS_kill] = "kill"; | |
963 | #endif | |
964 | #if defined (SYS_fstatfs) | |
965 | syscall_table[SYS_fstatfs] = "fstatfs"; | |
966 | #endif | |
967 | #if defined (SYS_pgrpsys) | |
968 | syscall_table[SYS_pgrpsys] = "pgrpsys"; | |
969 | #endif | |
970 | #if defined (SYS_xenix) | |
971 | syscall_table[SYS_xenix] = "xenix"; | |
972 | #endif | |
973 | #if defined (SYS_dup) | |
974 | syscall_table[SYS_dup] = "dup"; | |
975 | #endif | |
976 | #if defined (SYS_pipe) | |
977 | syscall_table[SYS_pipe] = "pipe"; | |
978 | #endif | |
979 | #if defined (SYS_times) | |
980 | syscall_table[SYS_times] = "times"; | |
981 | #endif | |
982 | #if defined (SYS_profil) | |
983 | syscall_table[SYS_profil] = "profil"; | |
984 | #endif | |
985 | #if defined (SYS_plock) | |
986 | syscall_table[SYS_plock] = "plock"; | |
987 | #endif | |
988 | #if defined (SYS_setgid) | |
989 | syscall_table[SYS_setgid] = "setgid"; | |
990 | #endif | |
991 | #if defined (SYS_getgid) | |
992 | syscall_table[SYS_getgid] = "getgid"; | |
993 | #endif | |
994 | #if defined (SYS_signal) | |
995 | syscall_table[SYS_signal] = "signal"; | |
996 | #endif | |
997 | #if defined (SYS_msgsys) | |
998 | syscall_table[SYS_msgsys] = "msgsys"; | |
999 | #endif | |
1000 | #if defined (SYS_sys3b) | |
1001 | syscall_table[SYS_sys3b] = "sys3b"; | |
1002 | #endif | |
1003 | #if defined (SYS_acct) | |
1004 | syscall_table[SYS_acct] = "acct"; | |
1005 | #endif | |
1006 | #if defined (SYS_shmsys) | |
1007 | syscall_table[SYS_shmsys] = "shmsys"; | |
1008 | #endif | |
1009 | #if defined (SYS_semsys) | |
1010 | syscall_table[SYS_semsys] = "semsys"; | |
1011 | #endif | |
1012 | #if defined (SYS_ioctl) | |
1013 | syscall_table[SYS_ioctl] = "ioctl"; | |
1014 | #endif | |
1015 | #if defined (SYS_uadmin) | |
1016 | syscall_table[SYS_uadmin] = "uadmin"; | |
1017 | #endif | |
1018 | #if defined (SYS_utssys) | |
1019 | syscall_table[SYS_utssys] = "utssys"; | |
1020 | #endif | |
1021 | #if defined (SYS_fsync) | |
1022 | syscall_table[SYS_fsync] = "fsync"; | |
1023 | #endif | |
1024 | #if defined (SYS_umask) | |
1025 | syscall_table[SYS_umask] = "umask"; | |
1026 | #endif | |
1027 | #if defined (SYS_chroot) | |
1028 | syscall_table[SYS_chroot] = "chroot"; | |
1029 | #endif | |
1030 | #if defined (SYS_fcntl) | |
1031 | syscall_table[SYS_fcntl] = "fcntl"; | |
1032 | #endif | |
1033 | #if defined (SYS_ulimit) | |
1034 | syscall_table[SYS_ulimit] = "ulimit"; | |
1035 | #endif | |
1036 | #if defined (SYS_rfsys) | |
1037 | syscall_table[SYS_rfsys] = "rfsys"; | |
1038 | #endif | |
1039 | #if defined (SYS_rmdir) | |
1040 | syscall_table[SYS_rmdir] = "rmdir"; | |
1041 | #endif | |
1042 | #if defined (SYS_mkdir) | |
1043 | syscall_table[SYS_mkdir] = "mkdir"; | |
1044 | #endif | |
1045 | #if defined (SYS_getdents) | |
1046 | syscall_table[SYS_getdents] = "getdents"; | |
1047 | #endif | |
1048 | #if defined (SYS_sysfs) | |
1049 | syscall_table[SYS_sysfs] = "sysfs"; | |
1050 | #endif | |
1051 | #if defined (SYS_getmsg) | |
1052 | syscall_table[SYS_getmsg] = "getmsg"; | |
1053 | #endif | |
1054 | #if defined (SYS_putmsg) | |
1055 | syscall_table[SYS_putmsg] = "putmsg"; | |
1056 | #endif | |
1057 | #if defined (SYS_poll) | |
1058 | syscall_table[SYS_poll] = "poll"; | |
1059 | #endif | |
1060 | #if defined (SYS_lstat) | |
1061 | syscall_table[SYS_lstat] = "lstat"; | |
1062 | #endif | |
1063 | #if defined (SYS_symlink) | |
1064 | syscall_table[SYS_symlink] = "symlink"; | |
1065 | #endif | |
1066 | #if defined (SYS_readlink) | |
1067 | syscall_table[SYS_readlink] = "readlink"; | |
1068 | #endif | |
1069 | #if defined (SYS_setgroups) | |
1070 | syscall_table[SYS_setgroups] = "setgroups"; | |
1071 | #endif | |
1072 | #if defined (SYS_getgroups) | |
1073 | syscall_table[SYS_getgroups] = "getgroups"; | |
1074 | #endif | |
1075 | #if defined (SYS_fchmod) | |
1076 | syscall_table[SYS_fchmod] = "fchmod"; | |
1077 | #endif | |
1078 | #if defined (SYS_fchown) | |
1079 | syscall_table[SYS_fchown] = "fchown"; | |
1080 | #endif | |
1081 | #if defined (SYS_sigprocmask) | |
1082 | syscall_table[SYS_sigprocmask] = "sigprocmask"; | |
1083 | #endif | |
1084 | #if defined (SYS_sigsuspend) | |
1085 | syscall_table[SYS_sigsuspend] = "sigsuspend"; | |
1086 | #endif | |
1087 | #if defined (SYS_sigaltstack) | |
1088 | syscall_table[SYS_sigaltstack] = "sigaltstack"; | |
1089 | #endif | |
1090 | #if defined (SYS_sigaction) | |
1091 | syscall_table[SYS_sigaction] = "sigaction"; | |
1092 | #endif | |
1093 | #if defined (SYS_sigpending) | |
1094 | syscall_table[SYS_sigpending] = "sigpending"; | |
1095 | #endif | |
1096 | #if defined (SYS_context) | |
1097 | syscall_table[SYS_context] = "context"; | |
1098 | #endif | |
1099 | #if defined (SYS_evsys) | |
1100 | syscall_table[SYS_evsys] = "evsys"; | |
1101 | #endif | |
1102 | #if defined (SYS_evtrapret) | |
1103 | syscall_table[SYS_evtrapret] = "evtrapret"; | |
1104 | #endif | |
1105 | #if defined (SYS_statvfs) | |
1106 | syscall_table[SYS_statvfs] = "statvfs"; | |
1107 | #endif | |
1108 | #if defined (SYS_fstatvfs) | |
1109 | syscall_table[SYS_fstatvfs] = "fstatvfs"; | |
1110 | #endif | |
1111 | #if defined (SYS_nfssys) | |
1112 | syscall_table[SYS_nfssys] = "nfssys"; | |
1113 | #endif | |
1114 | #if defined (SYS_waitsys) | |
1115 | syscall_table[SYS_waitsys] = "waitsys"; | |
1116 | #endif | |
1117 | #if defined (SYS_sigsendsys) | |
1118 | syscall_table[SYS_sigsendsys] = "sigsendsys"; | |
1119 | #endif | |
1120 | #if defined (SYS_hrtsys) | |
1121 | syscall_table[SYS_hrtsys] = "hrtsys"; | |
1122 | #endif | |
1123 | #if defined (SYS_acancel) | |
1124 | syscall_table[SYS_acancel] = "acancel"; | |
1125 | #endif | |
1126 | #if defined (SYS_async) | |
1127 | syscall_table[SYS_async] = "async"; | |
1128 | #endif | |
1129 | #if defined (SYS_priocntlsys) | |
1130 | syscall_table[SYS_priocntlsys] = "priocntlsys"; | |
1131 | #endif | |
1132 | #if defined (SYS_pathconf) | |
1133 | syscall_table[SYS_pathconf] = "pathconf"; | |
1134 | #endif | |
1135 | #if defined (SYS_mincore) | |
1136 | syscall_table[SYS_mincore] = "mincore"; | |
1137 | #endif | |
1138 | #if defined (SYS_mmap) | |
1139 | syscall_table[SYS_mmap] = "mmap"; | |
1140 | #endif | |
1141 | #if defined (SYS_mprotect) | |
1142 | syscall_table[SYS_mprotect] = "mprotect"; | |
1143 | #endif | |
1144 | #if defined (SYS_munmap) | |
1145 | syscall_table[SYS_munmap] = "munmap"; | |
1146 | #endif | |
1147 | #if defined (SYS_fpathconf) | |
1148 | syscall_table[SYS_fpathconf] = "fpathconf"; | |
1149 | #endif | |
1150 | #if defined (SYS_vfork) | |
1151 | syscall_table[SYS_vfork] = "vfork"; | |
1152 | #endif | |
1153 | #if defined (SYS_fchdir) | |
1154 | syscall_table[SYS_fchdir] = "fchdir"; | |
1155 | #endif | |
1156 | #if defined (SYS_readv) | |
1157 | syscall_table[SYS_readv] = "readv"; | |
1158 | #endif | |
1159 | #if defined (SYS_writev) | |
1160 | syscall_table[SYS_writev] = "writev"; | |
1161 | #endif | |
1162 | #if defined (SYS_xstat) | |
1163 | syscall_table[SYS_xstat] = "xstat"; | |
1164 | #endif | |
1165 | #if defined (SYS_lxstat) | |
1166 | syscall_table[SYS_lxstat] = "lxstat"; | |
1167 | #endif | |
1168 | #if defined (SYS_fxstat) | |
1169 | syscall_table[SYS_fxstat] = "fxstat"; | |
1170 | #endif | |
1171 | #if defined (SYS_xmknod) | |
1172 | syscall_table[SYS_xmknod] = "xmknod"; | |
1173 | #endif | |
1174 | #if defined (SYS_clocal) | |
1175 | syscall_table[SYS_clocal] = "clocal"; | |
1176 | #endif | |
1177 | #if defined (SYS_setrlimit) | |
1178 | syscall_table[SYS_setrlimit] = "setrlimit"; | |
1179 | #endif | |
1180 | #if defined (SYS_getrlimit) | |
1181 | syscall_table[SYS_getrlimit] = "getrlimit"; | |
1182 | #endif | |
1183 | #if defined (SYS_lchown) | |
1184 | syscall_table[SYS_lchown] = "lchown"; | |
1185 | #endif | |
1186 | #if defined (SYS_memcntl) | |
1187 | syscall_table[SYS_memcntl] = "memcntl"; | |
1188 | #endif | |
1189 | #if defined (SYS_getpmsg) | |
1190 | syscall_table[SYS_getpmsg] = "getpmsg"; | |
1191 | #endif | |
1192 | #if defined (SYS_putpmsg) | |
1193 | syscall_table[SYS_putpmsg] = "putpmsg"; | |
1194 | #endif | |
1195 | #if defined (SYS_rename) | |
1196 | syscall_table[SYS_rename] = "rename"; | |
1197 | #endif | |
1198 | #if defined (SYS_uname) | |
1199 | syscall_table[SYS_uname] = "uname"; | |
1200 | #endif | |
1201 | #if defined (SYS_setegid) | |
1202 | syscall_table[SYS_setegid] = "setegid"; | |
1203 | #endif | |
1204 | #if defined (SYS_sysconfig) | |
1205 | syscall_table[SYS_sysconfig] = "sysconfig"; | |
1206 | #endif | |
1207 | #if defined (SYS_adjtime) | |
1208 | syscall_table[SYS_adjtime] = "adjtime"; | |
1209 | #endif | |
1210 | #if defined (SYS_systeminfo) | |
1211 | syscall_table[SYS_systeminfo] = "systeminfo"; | |
1212 | #endif | |
1213 | #if defined (SYS_seteuid) | |
1214 | syscall_table[SYS_seteuid] = "seteuid"; | |
1215 | #endif | |
de43d7d0 SG |
1216 | #if defined (SYS_sproc) |
1217 | syscall_table[SYS_sproc] = "sproc"; | |
1218 | #endif | |
cc221e76 | 1219 | } |
35f5886e FF |
1220 | |
1221 | /* | |
1222 | ||
3fbdd536 | 1223 | LOCAL FUNCTION |
35f5886e | 1224 | |
3fbdd536 | 1225 | procfs_kill_inferior - kill any currently inferior |
35f5886e FF |
1226 | |
1227 | SYNOPSIS | |
1228 | ||
3fbdd536 | 1229 | void procfs_kill_inferior (void) |
35f5886e FF |
1230 | |
1231 | DESCRIPTION | |
1232 | ||
1233 | Kill any current inferior. | |
1234 | ||
1235 | NOTES | |
1236 | ||
1237 | Kills even attached inferiors. Presumably the user has already | |
1238 | been prompted that the inferior is an attached one rather than | |
1239 | one started by gdb. (FIXME?) | |
1240 | ||
1241 | */ | |
1242 | ||
3fbdd536 JG |
1243 | static void |
1244 | procfs_kill_inferior () | |
35f5886e | 1245 | { |
de43d7d0 | 1246 | target_mourn_inferior (); |
35f5886e FF |
1247 | } |
1248 | ||
1249 | /* | |
1250 | ||
1251 | LOCAL FUNCTION | |
1252 | ||
1253 | unconditionally_kill_inferior - terminate the inferior | |
1254 | ||
1255 | SYNOPSIS | |
1256 | ||
de43d7d0 | 1257 | static void unconditionally_kill_inferior (struct procinfo *) |
35f5886e FF |
1258 | |
1259 | DESCRIPTION | |
1260 | ||
de43d7d0 | 1261 | Kill the specified inferior. |
35f5886e FF |
1262 | |
1263 | NOTE | |
1264 | ||
1265 | A possibly useful enhancement would be to first try sending | |
1266 | the inferior a terminate signal, politely asking it to commit | |
de43d7d0 SG |
1267 | suicide, before we murder it (we could call that |
1268 | politely_kill_inferior()). | |
35f5886e FF |
1269 | |
1270 | */ | |
1271 | ||
1272 | static void | |
de43d7d0 SG |
1273 | unconditionally_kill_inferior (pi) |
1274 | struct procinfo *pi; | |
35f5886e FF |
1275 | { |
1276 | int signo; | |
de43d7d0 | 1277 | int ppid; |
35f5886e | 1278 | |
de43d7d0 SG |
1279 | ppid = pi->prstatus.pr_ppid; |
1280 | ||
35f5886e | 1281 | signo = SIGKILL; |
de43d7d0 | 1282 | ioctl (pi->fd, PIOCKILL, &signo); |
2592eef8 PS |
1283 | |
1284 | #ifdef PROCFS_NEED_PIOCSSIG_FOR_KILL | |
1285 | /* Alpha OSF/1 procfs needs an additional PIOCSSIG call with | |
1286 | a SIGKILL signal to kill the inferior, otherwise it might remain | |
1287 | stopped with a pending SIGKILL. | |
1288 | We do not check the result of the PIOCSSIG, the inferior might have | |
1289 | died already. */ | |
1290 | { | |
1291 | struct siginfo newsiginfo; | |
1292 | ||
1293 | memset ((char *) &newsiginfo, 0, sizeof (newsiginfo)); | |
1294 | newsiginfo.si_signo = signo; | |
1295 | newsiginfo.si_code = 0; | |
1296 | newsiginfo.si_errno = 0; | |
1297 | newsiginfo.si_pid = getpid (); | |
1298 | newsiginfo.si_uid = getuid (); | |
1299 | ioctl (pi->fd, PIOCSSIG, &newsiginfo); | |
1300 | } | |
1301 | #endif | |
1302 | ||
de43d7d0 SG |
1303 | close_proc_file (pi); |
1304 | ||
1305 | /* Only wait() for our direct children. Our grandchildren zombies are killed | |
1306 | by the death of their parents. */ | |
1307 | ||
1308 | if (ppid == getpid()) | |
1309 | wait ((int *) 0); | |
35f5886e FF |
1310 | } |
1311 | ||
1312 | /* | |
1313 | ||
3fbdd536 | 1314 | LOCAL FUNCTION |
35f5886e | 1315 | |
3fbdd536 | 1316 | procfs_xfer_memory -- copy data to or from inferior memory space |
35f5886e FF |
1317 | |
1318 | SYNOPSIS | |
1319 | ||
3fbdd536 | 1320 | int procfs_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, |
35f5886e FF |
1321 | int dowrite, struct target_ops target) |
1322 | ||
1323 | DESCRIPTION | |
1324 | ||
1325 | Copy LEN bytes to/from inferior's memory starting at MEMADDR | |
1326 | from/to debugger memory starting at MYADDR. Copy from inferior | |
1327 | if DOWRITE is zero or to inferior if DOWRITE is nonzero. | |
1328 | ||
1329 | Returns the length copied, which is either the LEN argument or | |
3fbdd536 | 1330 | zero. This xfer function does not do partial moves, since procfs_ops |
35f5886e FF |
1331 | doesn't allow memory operations to cross below us in the target stack |
1332 | anyway. | |
1333 | ||
1334 | NOTES | |
1335 | ||
1336 | The /proc interface makes this an almost trivial task. | |
1337 | */ | |
1338 | ||
3fbdd536 JG |
1339 | static int |
1340 | procfs_xfer_memory (memaddr, myaddr, len, dowrite, target) | |
1ab3bf1b JG |
1341 | CORE_ADDR memaddr; |
1342 | char *myaddr; | |
1343 | int len; | |
1344 | int dowrite; | |
1345 | struct target_ops *target; /* ignored */ | |
35f5886e FF |
1346 | { |
1347 | int nbytes = 0; | |
de43d7d0 | 1348 | struct procinfo *pi; |
35f5886e | 1349 | |
de43d7d0 SG |
1350 | pi = current_procinfo; |
1351 | ||
1352 | if (lseek(pi->fd, (off_t) memaddr, 0) == (off_t) memaddr) | |
35f5886e FF |
1353 | { |
1354 | if (dowrite) | |
1355 | { | |
de43d7d0 | 1356 | nbytes = write (pi->fd, myaddr, len); |
35f5886e FF |
1357 | } |
1358 | else | |
1359 | { | |
de43d7d0 | 1360 | nbytes = read (pi->fd, myaddr, len); |
35f5886e FF |
1361 | } |
1362 | if (nbytes < 0) | |
1363 | { | |
1364 | nbytes = 0; | |
1365 | } | |
1366 | } | |
1367 | return (nbytes); | |
1368 | } | |
1369 | ||
1370 | /* | |
1371 | ||
3fbdd536 | 1372 | LOCAL FUNCTION |
35f5886e | 1373 | |
3fbdd536 | 1374 | procfs_store_registers -- copy register values back to inferior |
35f5886e FF |
1375 | |
1376 | SYNOPSIS | |
1377 | ||
3fbdd536 | 1378 | void procfs_store_registers (int regno) |
35f5886e FF |
1379 | |
1380 | DESCRIPTION | |
1381 | ||
1382 | Store our current register values back into the inferior. If | |
1383 | REGNO is -1 then store all the register, otherwise store just | |
1384 | the value specified by REGNO. | |
1385 | ||
1386 | NOTES | |
1387 | ||
1388 | If we are storing only a single register, we first have to get all | |
1389 | the current values from the process, overwrite the desired register | |
1390 | in the gregset with the one we want from gdb's registers, and then | |
1391 | send the whole set back to the process. For writing all the | |
1392 | registers, all we have to do is generate the gregset and send it to | |
1393 | the process. | |
1394 | ||
1395 | Also note that the process has to be stopped on an event of interest | |
1396 | for this to work, which basically means that it has to have been | |
1397 | run under the control of one of the other /proc ioctl calls and not | |
1398 | ptrace. Since we don't use ptrace anyway, we don't worry about this | |
1399 | fine point, but it is worth noting for future reference. | |
1400 | ||
1401 | Gdb is confused about what this function is supposed to return. | |
1402 | Some versions return a value, others return nothing. Some are | |
1403 | declared to return a value and actually return nothing. Gdb ignores | |
1404 | anything returned. (FIXME) | |
1405 | ||
1406 | */ | |
1407 | ||
3fbdd536 JG |
1408 | static void |
1409 | procfs_store_registers (regno) | |
1ab3bf1b | 1410 | int regno; |
35f5886e | 1411 | { |
de43d7d0 SG |
1412 | struct procinfo *pi; |
1413 | ||
1414 | pi = current_procinfo; | |
1415 | ||
35f5886e FF |
1416 | if (regno != -1) |
1417 | { | |
de43d7d0 | 1418 | ioctl (pi->fd, PIOCGREG, &pi->gregset); |
35f5886e | 1419 | } |
de43d7d0 SG |
1420 | fill_gregset (&pi->gregset, regno); |
1421 | ioctl (pi->fd, PIOCSREG, &pi->gregset); | |
35f5886e FF |
1422 | |
1423 | #if defined (FP0_REGNUM) | |
1424 | ||
1425 | /* Now repeat everything using the floating point register set, if the | |
1426 | target has floating point hardware. Since we ignore the returned value, | |
1427 | we'll never know whether it worked or not anyway. */ | |
1428 | ||
1429 | if (regno != -1) | |
1430 | { | |
de43d7d0 | 1431 | ioctl (pi->fd, PIOCGFPREG, &pi->fpregset); |
35f5886e | 1432 | } |
de43d7d0 SG |
1433 | fill_fpregset (&pi->fpregset, regno); |
1434 | ioctl (pi->fd, PIOCSFPREG, &pi->fpregset); | |
35f5886e FF |
1435 | |
1436 | #endif /* FP0_REGNUM */ | |
1437 | ||
1438 | } | |
1439 | ||
1440 | /* | |
1441 | ||
3fbdd536 | 1442 | LOCAL FUNCTION |
35f5886e | 1443 | |
de43d7d0 SG |
1444 | create_procinfo - initialize access to a /proc entry |
1445 | ||
1446 | SYNOPSIS | |
1447 | ||
eca4a350 | 1448 | struct procinfo * create_procinfo (int pid) |
de43d7d0 SG |
1449 | |
1450 | DESCRIPTION | |
1451 | ||
eca4a350 SG |
1452 | Allocate a procinfo structure, open the /proc file and then set up the |
1453 | set of signals and faults that are to be traced. Returns a pointer to | |
1454 | the new procinfo structure. | |
de43d7d0 SG |
1455 | |
1456 | NOTES | |
1457 | ||
1458 | If proc_init_failed ever gets called, control returns to the command | |
1459 | processing loop via the standard error handling code. | |
1460 | ||
1461 | */ | |
1462 | ||
eca4a350 | 1463 | static struct procinfo * |
de43d7d0 SG |
1464 | create_procinfo (pid) |
1465 | int pid; | |
1466 | { | |
1467 | struct procinfo *pi; | |
1468 | ||
2592eef8 PS |
1469 | pi = find_procinfo (pid, 1); |
1470 | if (pi != NULL) | |
1471 | return pi; /* All done! It already exists */ | |
de43d7d0 SG |
1472 | |
1473 | pi = (struct procinfo *) xmalloc (sizeof (struct procinfo)); | |
1474 | ||
1475 | if (!open_proc_file (pid, pi, O_RDWR)) | |
1476 | proc_init_failed (pi, "can't open process file"); | |
1477 | ||
1478 | /* Add new process to process info list */ | |
1479 | ||
1480 | pi->next = procinfo_list; | |
1481 | procinfo_list = pi; | |
1482 | ||
1483 | add_fd (pi); /* Add to list for poll/select */ | |
1484 | ||
1485 | memset ((char *) &pi->prrun, 0, sizeof (pi->prrun)); | |
1486 | prfillset (&pi->prrun.pr_trace); | |
1487 | procfs_notice_signals (pid); | |
1488 | prfillset (&pi->prrun.pr_fault); | |
1489 | prdelset (&pi->prrun.pr_fault, FLTPAGE); | |
1490 | ||
2592eef8 PS |
1491 | #ifdef PROCFS_DONT_TRACE_IFAULT |
1492 | /* Tracing T_IFAULT under Alpha OSF/1 causes a `floating point enable' | |
1493 | fault from which we cannot continue (except by disabling the | |
1494 | tracing). We rely on the delivery of a SIGTRAP signal (which is traced) | |
1495 | for the other T_IFAULT faults if tracing them is disabled. */ | |
1496 | prdelset (&pi->prrun.pr_fault, T_IFAULT); | |
1497 | #endif | |
1498 | ||
de43d7d0 SG |
1499 | if (ioctl (pi->fd, PIOCWSTOP, &pi->prstatus) < 0) |
1500 | proc_init_failed (pi, "PIOCWSTOP failed"); | |
1501 | ||
1502 | if (ioctl (pi->fd, PIOCSFAULT, &pi->prrun.pr_fault) < 0) | |
1503 | proc_init_failed (pi, "PIOCSFAULT failed"); | |
eca4a350 SG |
1504 | |
1505 | return pi; | |
de43d7d0 SG |
1506 | } |
1507 | ||
1508 | /* | |
1509 | ||
1510 | LOCAL FUNCTION | |
1511 | ||
1512 | procfs_init_inferior - initialize target vector and access to a | |
1513 | /proc entry | |
35f5886e FF |
1514 | |
1515 | SYNOPSIS | |
1516 | ||
3fbdd536 | 1517 | void procfs_init_inferior (int pid) |
35f5886e FF |
1518 | |
1519 | DESCRIPTION | |
1520 | ||
1521 | When gdb starts an inferior, this function is called in the parent | |
1522 | process immediately after the fork. It waits for the child to stop | |
1523 | on the return from the exec system call (the child itself takes care | |
1524 | of ensuring that this is set up), then sets up the set of signals | |
1525 | and faults that are to be traced. | |
1526 | ||
1527 | NOTES | |
1528 | ||
1529 | If proc_init_failed ever gets called, control returns to the command | |
1530 | processing loop via the standard error handling code. | |
cc221e76 | 1531 | |
35f5886e FF |
1532 | */ |
1533 | ||
3fbdd536 JG |
1534 | static void |
1535 | procfs_init_inferior (pid) | |
1ab3bf1b | 1536 | int pid; |
35f5886e | 1537 | { |
3fbdd536 JG |
1538 | push_target (&procfs_ops); |
1539 | ||
de43d7d0 SG |
1540 | create_procinfo (pid); |
1541 | add_thread (pid); /* Setup initial thread */ | |
bc28a06c | 1542 | |
2592eef8 PS |
1543 | #ifdef START_INFERIOR_TRAPS_EXPECTED |
1544 | startup_inferior (START_INFERIOR_TRAPS_EXPECTED); | |
1545 | #else | |
bc28a06c JK |
1546 | /* One trap to exec the shell, one to exec the program being debugged. */ |
1547 | startup_inferior (2); | |
2592eef8 | 1548 | #endif |
35f5886e FF |
1549 | } |
1550 | ||
1551 | /* | |
1552 | ||
cc221e76 FF |
1553 | GLOBAL FUNCTION |
1554 | ||
3950a34e | 1555 | procfs_notice_signals |
cc221e76 FF |
1556 | |
1557 | SYNOPSIS | |
1558 | ||
952a820e | 1559 | static void procfs_notice_signals (int pid); |
cc221e76 FF |
1560 | |
1561 | DESCRIPTION | |
1562 | ||
1563 | When the user changes the state of gdb's signal handling via the | |
1564 | "handle" command, this function gets called to see if any change | |
1565 | in the /proc interface is required. It is also called internally | |
1566 | by other /proc interface functions to initialize the state of | |
1567 | the traced signal set. | |
1568 | ||
1569 | One thing it does is that signals for which the state is "nostop", | |
1570 | "noprint", and "pass", have their trace bits reset in the pr_trace | |
1571 | field, so that they are no longer traced. This allows them to be | |
1572 | delivered directly to the inferior without the debugger ever being | |
1573 | involved. | |
1574 | */ | |
1575 | ||
3950a34e | 1576 | static void |
de43d7d0 | 1577 | procfs_notice_signals (pid) |
952a820e | 1578 | int pid; |
cc221e76 FF |
1579 | { |
1580 | int signo; | |
de43d7d0 | 1581 | struct procinfo *pi; |
cc221e76 | 1582 | |
de43d7d0 SG |
1583 | pi = find_procinfo (pid, 0); |
1584 | ||
1585 | for (signo = 0; signo < NSIG; signo++) | |
cc221e76 | 1586 | { |
67ac9759 JK |
1587 | if (signal_stop_state (target_signal_from_host (signo)) == 0 && |
1588 | signal_print_state (target_signal_from_host (signo)) == 0 && | |
1589 | signal_pass_state (target_signal_from_host (signo)) == 1) | |
cc221e76 | 1590 | { |
de43d7d0 | 1591 | prdelset (&pi->prrun.pr_trace, signo); |
cc221e76 | 1592 | } |
de43d7d0 | 1593 | else |
cc221e76 | 1594 | { |
de43d7d0 | 1595 | praddset (&pi->prrun.pr_trace, signo); |
cc221e76 FF |
1596 | } |
1597 | } | |
de43d7d0 SG |
1598 | if (ioctl (pi->fd, PIOCSTRACE, &pi->prrun.pr_trace)) |
1599 | { | |
1600 | print_sys_errmsg ("PIOCSTRACE failed", errno); | |
1601 | } | |
cc221e76 FF |
1602 | } |
1603 | ||
1604 | /* | |
1605 | ||
3fbdd536 | 1606 | LOCAL FUNCTION |
35f5886e FF |
1607 | |
1608 | proc_set_exec_trap -- arrange for exec'd child to halt at startup | |
1609 | ||
1610 | SYNOPSIS | |
1611 | ||
1612 | void proc_set_exec_trap (void) | |
1613 | ||
1614 | DESCRIPTION | |
1615 | ||
1616 | This function is called in the child process when starting up | |
1617 | an inferior, prior to doing the exec of the actual inferior. | |
1618 | It sets the child process's exitset to make exit from the exec | |
1619 | system call an event of interest to stop on, and then simply | |
1620 | returns. The child does the exec, the system call returns, and | |
1621 | the child stops at the first instruction, ready for the gdb | |
1622 | parent process to take control of it. | |
1623 | ||
1624 | NOTE | |
1625 | ||
1626 | We need to use all local variables since the child may be sharing | |
1627 | it's data space with the parent, if vfork was used rather than | |
1628 | fork. | |
cc221e76 FF |
1629 | |
1630 | Also note that we want to turn off the inherit-on-fork flag in | |
1631 | the child process so that any grand-children start with all | |
1632 | tracing flags cleared. | |
35f5886e FF |
1633 | */ |
1634 | ||
3fbdd536 | 1635 | static void |
1ab3bf1b | 1636 | proc_set_exec_trap () |
35f5886e FF |
1637 | { |
1638 | sysset_t exitset; | |
fb63d460 | 1639 | sysset_t entryset; |
35f5886e FF |
1640 | auto char procname[32]; |
1641 | int fd; | |
1642 | ||
4ed3a9ea | 1643 | sprintf (procname, PROC_NAME_FMT, getpid ()); |
35f5886e FF |
1644 | if ((fd = open (procname, O_RDWR)) < 0) |
1645 | { | |
1646 | perror (procname); | |
199b2450 | 1647 | gdb_flush (gdb_stderr); |
35f5886e FF |
1648 | _exit (127); |
1649 | } | |
1650 | premptyset (&exitset); | |
fb63d460 | 1651 | premptyset (&entryset); |
407a8389 | 1652 | |
2592eef8 PS |
1653 | #ifdef PIOCSSPCACT |
1654 | /* Under Alpha OSF/1 we have to use a PIOCSSPCACT ioctl to trace | |
1655 | exits from exec system calls because of the user level loader. */ | |
1656 | { | |
1657 | int prfs_flags; | |
1658 | ||
1659 | if (ioctl (fd, PIOCGSPCACT, &prfs_flags) < 0) | |
1660 | { | |
1661 | perror (procname); | |
1662 | gdb_flush (gdb_stderr); | |
1663 | _exit (127); | |
1664 | } | |
1665 | prfs_flags |= PRFS_STOPEXEC; | |
1666 | if (ioctl (fd, PIOCSSPCACT, &prfs_flags) < 0) | |
1667 | { | |
1668 | perror (procname); | |
1669 | gdb_flush (gdb_stderr); | |
1670 | _exit (127); | |
1671 | } | |
1672 | } | |
1673 | #else | |
cc221e76 FF |
1674 | /* GW: Rationale... |
1675 | Not all systems with /proc have all the exec* syscalls with the same | |
1676 | names. On the SGI, for example, there is no SYS_exec, but there | |
1677 | *is* a SYS_execv. So, we try to account for that. */ | |
1678 | ||
407a8389 | 1679 | #ifdef SYS_exec |
35f5886e | 1680 | praddset (&exitset, SYS_exec); |
407a8389 SG |
1681 | #endif |
1682 | #ifdef SYS_execve | |
35f5886e | 1683 | praddset (&exitset, SYS_execve); |
407a8389 SG |
1684 | #endif |
1685 | #ifdef SYS_execv | |
fb63d460 | 1686 | praddset (&exitset, SYS_execv); |
407a8389 SG |
1687 | #endif |
1688 | ||
35f5886e FF |
1689 | if (ioctl (fd, PIOCSEXIT, &exitset) < 0) |
1690 | { | |
1691 | perror (procname); | |
199b2450 | 1692 | gdb_flush (gdb_stderr); |
35f5886e FF |
1693 | _exit (127); |
1694 | } | |
2592eef8 | 1695 | #endif |
cc221e76 | 1696 | |
fb63d460 SG |
1697 | praddset (&entryset, SYS_exit); |
1698 | ||
1699 | if (ioctl (fd, PIOCSENTRY, &entryset) < 0) | |
1700 | { | |
1701 | perror (procname); | |
199b2450 | 1702 | gdb_flush (gdb_stderr); |
fb63d460 SG |
1703 | _exit (126); |
1704 | } | |
1705 | ||
cc221e76 FF |
1706 | /* Turn off inherit-on-fork flag so that all grand-children of gdb |
1707 | start with tracing flags cleared. */ | |
1708 | ||
5c1c5e67 | 1709 | #if defined (PIOCRESET) /* New method */ |
cc221e76 FF |
1710 | { |
1711 | long pr_flags; | |
1712 | pr_flags = PR_FORK; | |
4ed3a9ea | 1713 | ioctl (fd, PIOCRESET, &pr_flags); |
cc221e76 | 1714 | } |
5c1c5e67 FF |
1715 | #else |
1716 | #if defined (PIOCRFORK) /* Original method */ | |
4ed3a9ea | 1717 | ioctl (fd, PIOCRFORK, NULL); |
cc221e76 | 1718 | #endif |
ec8ceca3 JG |
1719 | #endif |
1720 | ||
1721 | /* Turn on run-on-last-close flag so that this process will not hang | |
1722 | if GDB goes away for some reason. */ | |
1723 | ||
1724 | #if defined (PIOCSET) /* New method */ | |
1725 | { | |
1726 | long pr_flags; | |
1727 | pr_flags = PR_RLC; | |
1728 | (void) ioctl (fd, PIOCSET, &pr_flags); | |
1729 | } | |
1730 | #else | |
1731 | #if defined (PIOCSRLC) /* Original method */ | |
1732 | (void) ioctl (fd, PIOCSRLC, 0); | |
1733 | #endif | |
cc221e76 | 1734 | #endif |
35f5886e FF |
1735 | } |
1736 | ||
f8b76e70 FF |
1737 | /* |
1738 | ||
a39ad5ce FF |
1739 | GLOBAL FUNCTION |
1740 | ||
1741 | proc_iterate_over_mappings -- call function for every mapped space | |
1742 | ||
1743 | SYNOPSIS | |
1744 | ||
1745 | int proc_iterate_over_mappings (int (*func)()) | |
1746 | ||
1747 | DESCRIPTION | |
1748 | ||
1749 | Given a pointer to a function, call that function for every | |
1750 | mapped address space, passing it an open file descriptor for | |
1751 | the file corresponding to that mapped address space (if any) | |
1752 | and the base address of the mapped space. Quit when we hit | |
1753 | the end of the mappings or the function returns nonzero. | |
1754 | */ | |
1755 | ||
1756 | int | |
1ab3bf1b JG |
1757 | proc_iterate_over_mappings (func) |
1758 | int (*func) PARAMS ((int, CORE_ADDR)); | |
a39ad5ce FF |
1759 | { |
1760 | int nmap; | |
1761 | int fd; | |
1762 | int funcstat = 0; | |
1763 | struct prmap *prmaps; | |
1764 | struct prmap *prmap; | |
de43d7d0 SG |
1765 | struct procinfo *pi; |
1766 | ||
1767 | pi = current_procinfo; | |
a39ad5ce | 1768 | |
de43d7d0 | 1769 | if (ioctl (pi->fd, PIOCNMAP, &nmap) == 0) |
a39ad5ce | 1770 | { |
1ab3bf1b | 1771 | prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps)); |
de43d7d0 | 1772 | if (ioctl (pi->fd, PIOCMAP, prmaps) == 0) |
a39ad5ce FF |
1773 | { |
1774 | for (prmap = prmaps; prmap -> pr_size && funcstat == 0; ++prmap) | |
1775 | { | |
de43d7d0 | 1776 | fd = proc_address_to_fd (pi, (CORE_ADDR) prmap -> pr_vaddr, 0); |
1ab3bf1b | 1777 | funcstat = (*func) (fd, (CORE_ADDR) prmap -> pr_vaddr); |
a39ad5ce FF |
1778 | close (fd); |
1779 | } | |
1780 | } | |
1781 | } | |
1782 | return (funcstat); | |
1783 | } | |
1784 | ||
3fbdd536 | 1785 | #if 0 /* Currently unused */ |
a39ad5ce FF |
1786 | /* |
1787 | ||
f8b76e70 FF |
1788 | GLOBAL FUNCTION |
1789 | ||
1790 | proc_base_address -- find base address for segment containing address | |
1791 | ||
1792 | SYNOPSIS | |
1793 | ||
1794 | CORE_ADDR proc_base_address (CORE_ADDR addr) | |
1795 | ||
1796 | DESCRIPTION | |
1797 | ||
1798 | Given an address of a location in the inferior, find and return | |
1799 | the base address of the mapped segment containing that address. | |
1800 | ||
1801 | This is used for example, by the shared library support code, | |
1802 | where we have the pc value for some location in the shared library | |
1803 | where we are stopped, and need to know the base address of the | |
1804 | segment containing that address. | |
1805 | */ | |
1806 | ||
f8b76e70 | 1807 | CORE_ADDR |
1ab3bf1b | 1808 | proc_base_address (addr) |
cc221e76 | 1809 | CORE_ADDR addr; |
f8b76e70 FF |
1810 | { |
1811 | int nmap; | |
1812 | struct prmap *prmaps; | |
1813 | struct prmap *prmap; | |
1814 | CORE_ADDR baseaddr = 0; | |
de43d7d0 | 1815 | struct procinfo *pi; |
f8b76e70 | 1816 | |
de43d7d0 SG |
1817 | pi = current_procinfo; |
1818 | ||
1819 | if (ioctl (pi->fd, PIOCNMAP, &nmap) == 0) | |
f8b76e70 | 1820 | { |
1ab3bf1b | 1821 | prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps)); |
de43d7d0 | 1822 | if (ioctl (pi->fd, PIOCMAP, prmaps) == 0) |
f8b76e70 FF |
1823 | { |
1824 | for (prmap = prmaps; prmap -> pr_size; ++prmap) | |
1825 | { | |
1826 | if ((prmap -> pr_vaddr <= (caddr_t) addr) && | |
1827 | (prmap -> pr_vaddr + prmap -> pr_size > (caddr_t) addr)) | |
1828 | { | |
1829 | baseaddr = (CORE_ADDR) prmap -> pr_vaddr; | |
1830 | break; | |
1831 | } | |
1832 | } | |
1833 | } | |
1834 | } | |
1835 | return (baseaddr); | |
1836 | } | |
1837 | ||
1ab3bf1b JG |
1838 | #endif /* 0 */ |
1839 | ||
f8b76e70 FF |
1840 | /* |
1841 | ||
cc221e76 | 1842 | LOCAL FUNCTION |
f8b76e70 FF |
1843 | |
1844 | proc_address_to_fd -- return open fd for file mapped to address | |
1845 | ||
1846 | SYNOPSIS | |
1847 | ||
de43d7d0 | 1848 | int proc_address_to_fd (struct procinfo *pi, CORE_ADDR addr, complain) |
f8b76e70 FF |
1849 | |
1850 | DESCRIPTION | |
1851 | ||
1852 | Given an address in the current inferior's address space, use the | |
1853 | /proc interface to find an open file descriptor for the file that | |
1854 | this address was mapped in from. Return -1 if there is no current | |
1855 | inferior. Print a warning message if there is an inferior but | |
1856 | the address corresponds to no file (IE a bogus address). | |
1857 | ||
1858 | */ | |
1859 | ||
1ab3bf1b | 1860 | static int |
de43d7d0 SG |
1861 | proc_address_to_fd (pi, addr, complain) |
1862 | struct procinfo *pi; | |
1ab3bf1b JG |
1863 | CORE_ADDR addr; |
1864 | int complain; | |
f8b76e70 FF |
1865 | { |
1866 | int fd = -1; | |
1867 | ||
de43d7d0 | 1868 | if ((fd = ioctl (pi->fd, PIOCOPENM, (caddr_t *) &addr)) < 0) |
f8b76e70 | 1869 | { |
de43d7d0 | 1870 | if (complain) |
f8b76e70 | 1871 | { |
de43d7d0 SG |
1872 | print_sys_errmsg (pi->pathname, errno); |
1873 | warning ("can't find mapped file for address 0x%x", addr); | |
f8b76e70 FF |
1874 | } |
1875 | } | |
1876 | return (fd); | |
1877 | } | |
1878 | ||
35f5886e | 1879 | |
3fbdd536 JG |
1880 | /* Attach to process PID, then initialize for debugging it |
1881 | and wait for the trace-trap that results from attaching. */ | |
1882 | ||
1883 | static void | |
1884 | procfs_attach (args, from_tty) | |
1885 | char *args; | |
1886 | int from_tty; | |
1887 | { | |
1888 | char *exec_file; | |
1889 | int pid; | |
1890 | ||
1891 | if (!args) | |
1892 | error_no_arg ("process-id to attach"); | |
1893 | ||
1894 | pid = atoi (args); | |
1895 | ||
1896 | if (pid == getpid()) /* Trying to masturbate? */ | |
1897 | error ("I refuse to debug myself!"); | |
1898 | ||
1899 | if (from_tty) | |
1900 | { | |
1901 | exec_file = (char *) get_exec_file (0); | |
1902 | ||
1903 | if (exec_file) | |
199b2450 | 1904 | printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, target_pid_to_str (pid)); |
3fbdd536 | 1905 | else |
199b2450 | 1906 | printf_unfiltered ("Attaching to %s\n", target_pid_to_str (pid)); |
3fbdd536 | 1907 | |
199b2450 | 1908 | gdb_flush (gdb_stdout); |
3fbdd536 JG |
1909 | } |
1910 | ||
1911 | do_attach (pid); | |
1912 | inferior_pid = pid; | |
1913 | push_target (&procfs_ops); | |
1914 | } | |
1915 | ||
1916 | ||
1917 | /* Take a program previously attached to and detaches it. | |
1918 | The program resumes execution and will no longer stop | |
1919 | on signals, etc. We'd better not have left any breakpoints | |
1920 | in the program or it'll die when it hits one. For this | |
1921 | to work, it may be necessary for the process to have been | |
1922 | previously attached. It *might* work if the program was | |
1923 | started via the normal ptrace (PTRACE_TRACEME). */ | |
1924 | ||
1925 | static void | |
1926 | procfs_detach (args, from_tty) | |
1927 | char *args; | |
1928 | int from_tty; | |
1929 | { | |
1930 | int siggnal = 0; | |
1931 | ||
1932 | if (from_tty) | |
1933 | { | |
1934 | char *exec_file = get_exec_file (0); | |
1935 | if (exec_file == 0) | |
1936 | exec_file = ""; | |
199b2450 | 1937 | printf_unfiltered ("Detaching from program: %s %s\n", |
25286543 | 1938 | exec_file, target_pid_to_str (inferior_pid)); |
199b2450 | 1939 | gdb_flush (gdb_stdout); |
3fbdd536 JG |
1940 | } |
1941 | if (args) | |
1942 | siggnal = atoi (args); | |
1943 | ||
1944 | do_detach (siggnal); | |
1945 | inferior_pid = 0; | |
1946 | unpush_target (&procfs_ops); /* Pop out of handling an inferior */ | |
1947 | } | |
1948 | ||
1949 | /* Get ready to modify the registers array. On machines which store | |
1950 | individual registers, this doesn't need to do anything. On machines | |
1951 | which store all the registers in one fell swoop, this makes sure | |
1952 | that registers contains all the registers from the program being | |
1953 | debugged. */ | |
1954 | ||
1955 | static void | |
1956 | procfs_prepare_to_store () | |
1957 | { | |
1958 | #ifdef CHILD_PREPARE_TO_STORE | |
1959 | CHILD_PREPARE_TO_STORE (); | |
1960 | #endif | |
1961 | } | |
1962 | ||
1963 | /* Print status information about what we're accessing. */ | |
1964 | ||
1965 | static void | |
1966 | procfs_files_info (ignore) | |
1967 | struct target_ops *ignore; | |
1968 | { | |
199b2450 | 1969 | printf_unfiltered ("\tUsing the running image of %s %s via /proc.\n", |
25286543 | 1970 | attach_flag? "attached": "child", target_pid_to_str (inferior_pid)); |
3fbdd536 JG |
1971 | } |
1972 | ||
1973 | /* ARGSUSED */ | |
1974 | static void | |
1975 | procfs_open (arg, from_tty) | |
1976 | char *arg; | |
1977 | int from_tty; | |
1978 | { | |
1979 | error ("Use the \"run\" command to start a Unix child process."); | |
1980 | } | |
35f5886e FF |
1981 | |
1982 | /* | |
1983 | ||
3fbdd536 | 1984 | LOCAL FUNCTION |
35f5886e | 1985 | |
3fbdd536 | 1986 | do_attach -- attach to an already existing process |
35f5886e FF |
1987 | |
1988 | SYNOPSIS | |
1989 | ||
3fbdd536 | 1990 | int do_attach (int pid) |
35f5886e FF |
1991 | |
1992 | DESCRIPTION | |
1993 | ||
1994 | Attach to an already existing process with the specified process | |
1995 | id. If the process is not already stopped, query whether to | |
1996 | stop it or not. | |
1997 | ||
1998 | NOTES | |
1999 | ||
2000 | The option of stopping at attach time is specific to the /proc | |
2001 | versions of gdb. Versions using ptrace force the attachee | |
ec8ceca3 JG |
2002 | to stop. (I have changed this version to do so, too. All you |
2003 | have to do is "continue" to make it go on. -- gnu@cygnus.com) | |
35f5886e FF |
2004 | |
2005 | */ | |
2006 | ||
3fbdd536 JG |
2007 | static int |
2008 | do_attach (pid) | |
1ab3bf1b | 2009 | int pid; |
35f5886e | 2010 | { |
ec8ceca3 | 2011 | int result; |
de43d7d0 SG |
2012 | struct procinfo *pi; |
2013 | ||
2014 | pi = (struct procinfo *) xmalloc (sizeof (struct procinfo)); | |
ec8ceca3 | 2015 | |
de43d7d0 | 2016 | if (!open_proc_file (pid, pi, O_RDWR)) |
35f5886e | 2017 | { |
de43d7d0 SG |
2018 | free (pi); |
2019 | perror_with_name (pi->pathname); | |
35f5886e FF |
2020 | /* NOTREACHED */ |
2021 | } | |
2022 | ||
de43d7d0 SG |
2023 | /* Add new process to process info list */ |
2024 | ||
2025 | pi->next = procinfo_list; | |
2026 | procinfo_list = pi; | |
2027 | ||
2028 | add_fd (pi); /* Add to list for poll/select */ | |
2029 | ||
35f5886e FF |
2030 | /* Get current status of process and if it is not already stopped, |
2031 | then stop it. Remember whether or not it was stopped when we first | |
2032 | examined it. */ | |
2033 | ||
de43d7d0 | 2034 | if (ioctl (pi->fd, PIOCSTATUS, &pi->prstatus) < 0) |
35f5886e | 2035 | { |
de43d7d0 SG |
2036 | print_sys_errmsg (pi->pathname, errno); |
2037 | close_proc_file (pi); | |
35f5886e FF |
2038 | error ("PIOCSTATUS failed"); |
2039 | } | |
de43d7d0 | 2040 | if (pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP)) |
35f5886e | 2041 | { |
de43d7d0 | 2042 | pi->was_stopped = 1; |
35f5886e FF |
2043 | } |
2044 | else | |
2045 | { | |
de43d7d0 | 2046 | pi->was_stopped = 0; |
ec8ceca3 | 2047 | if (1 || query ("Process is currently running, stop it? ")) |
35f5886e | 2048 | { |
ec8ceca3 JG |
2049 | /* Make it run again when we close it. */ |
2050 | #if defined (PIOCSET) /* New method */ | |
2051 | { | |
2052 | long pr_flags; | |
2053 | pr_flags = PR_RLC; | |
de43d7d0 | 2054 | result = ioctl (pi->fd, PIOCSET, &pr_flags); |
ec8ceca3 JG |
2055 | } |
2056 | #else | |
2057 | #if defined (PIOCSRLC) /* Original method */ | |
de43d7d0 | 2058 | result = ioctl (pi->fd, PIOCSRLC, 0); |
ec8ceca3 JG |
2059 | #endif |
2060 | #endif | |
2061 | if (result < 0) | |
2062 | { | |
de43d7d0 SG |
2063 | print_sys_errmsg (pi->pathname, errno); |
2064 | close_proc_file (pi); | |
ec8ceca3 JG |
2065 | error ("PIOCSRLC or PIOCSET failed"); |
2066 | } | |
de43d7d0 | 2067 | if (ioctl (pi->fd, PIOCSTOP, &pi->prstatus) < 0) |
35f5886e | 2068 | { |
de43d7d0 SG |
2069 | print_sys_errmsg (pi->pathname, errno); |
2070 | close_proc_file (pi); | |
35f5886e FF |
2071 | error ("PIOCSTOP failed"); |
2072 | } | |
de43d7d0 | 2073 | pi->nopass_next_sigstop = 1; |
d65eee73 FF |
2074 | } |
2075 | else | |
2076 | { | |
199b2450 | 2077 | printf_unfiltered ("Ok, gdb will wait for %s to stop.\n", target_pid_to_str (pid)); |
35f5886e FF |
2078 | } |
2079 | } | |
ec8ceca3 | 2080 | |
35f5886e FF |
2081 | /* Remember some things about the inferior that we will, or might, change |
2082 | so that we can restore them when we detach. */ | |
2083 | ||
de43d7d0 SG |
2084 | ioctl (pi->fd, PIOCGTRACE, &pi->saved_trace); |
2085 | ioctl (pi->fd, PIOCGHOLD, &pi->saved_sighold); | |
2086 | ioctl (pi->fd, PIOCGFAULT, &pi->saved_fltset); | |
2087 | ioctl (pi->fd, PIOCGENTRY, &pi->saved_entryset); | |
2088 | ioctl (pi->fd, PIOCGEXIT, &pi->saved_exitset); | |
35f5886e FF |
2089 | |
2090 | /* Set up trace and fault sets, as gdb expects them. */ | |
2091 | ||
de43d7d0 SG |
2092 | memset (&pi->prrun, 0, sizeof (pi->prrun)); |
2093 | prfillset (&pi->prrun.pr_trace); | |
2094 | procfs_notice_signals (pid); | |
2095 | prfillset (&pi->prrun.pr_fault); | |
2096 | prdelset (&pi->prrun.pr_fault, FLTPAGE); | |
2592eef8 PS |
2097 | |
2098 | #ifdef PROCFS_DONT_TRACE_IFAULT | |
2099 | /* Tracing T_IFAULT under Alpha OSF/1 causes a `floating point enable' | |
2100 | fault from which we cannot continue (except by disabling the | |
2101 | tracing). We rely on the delivery of a SIGTRAP signal (which is traced) | |
2102 | for the other T_IFAULT faults if tracing them is disabled. */ | |
2103 | prdelset (&pi->prrun.pr_fault, T_IFAULT); | |
2104 | #endif | |
2105 | ||
de43d7d0 | 2106 | if (ioctl (pi->fd, PIOCSFAULT, &pi->prrun.pr_fault)) |
35f5886e | 2107 | { |
f66f459f | 2108 | print_sys_errmsg ("PIOCSFAULT failed", errno); |
35f5886e | 2109 | } |
de43d7d0 | 2110 | if (ioctl (pi->fd, PIOCSTRACE, &pi->prrun.pr_trace)) |
35f5886e | 2111 | { |
f66f459f | 2112 | print_sys_errmsg ("PIOCSTRACE failed", errno); |
35f5886e FF |
2113 | } |
2114 | attach_flag = 1; | |
2115 | return (pid); | |
2116 | } | |
2117 | ||
2118 | /* | |
2119 | ||
3fbdd536 | 2120 | LOCAL FUNCTION |
35f5886e | 2121 | |
3fbdd536 | 2122 | do_detach -- detach from an attached-to process |
35f5886e FF |
2123 | |
2124 | SYNOPSIS | |
2125 | ||
3fbdd536 | 2126 | void do_detach (int signal) |
35f5886e FF |
2127 | |
2128 | DESCRIPTION | |
2129 | ||
2130 | Detach from the current attachee. | |
2131 | ||
2132 | If signal is non-zero, the attachee is started running again and sent | |
2133 | the specified signal. | |
2134 | ||
2135 | If signal is zero and the attachee was not already stopped when we | |
2136 | attached to it, then we make it runnable again when we detach. | |
2137 | ||
2138 | Otherwise, we query whether or not to make the attachee runnable | |
2139 | again, since we may simply want to leave it in the state it was in | |
2140 | when we attached. | |
2141 | ||
2142 | We report any problems, but do not consider them errors, since we | |
2143 | MUST detach even if some things don't seem to go right. This may not | |
2144 | be the ideal situation. (FIXME). | |
2145 | */ | |
2146 | ||
3fbdd536 JG |
2147 | static void |
2148 | do_detach (signal) | |
1ab3bf1b | 2149 | int signal; |
35f5886e | 2150 | { |
ec8ceca3 | 2151 | int result; |
de43d7d0 SG |
2152 | struct procinfo *pi; |
2153 | ||
2154 | pi = current_procinfo; | |
ec8ceca3 | 2155 | |
35f5886e FF |
2156 | if (signal) |
2157 | { | |
de43d7d0 | 2158 | set_proc_siginfo (pi, signal); |
35f5886e | 2159 | } |
de43d7d0 | 2160 | if (ioctl (pi->fd, PIOCSEXIT, &pi->saved_exitset) < 0) |
35f5886e | 2161 | { |
de43d7d0 | 2162 | print_sys_errmsg (pi->pathname, errno); |
199b2450 | 2163 | printf_unfiltered ("PIOCSEXIT failed.\n"); |
35f5886e | 2164 | } |
de43d7d0 | 2165 | if (ioctl (pi->fd, PIOCSENTRY, &pi->saved_entryset) < 0) |
35f5886e | 2166 | { |
de43d7d0 | 2167 | print_sys_errmsg (pi->pathname, errno); |
199b2450 | 2168 | printf_unfiltered ("PIOCSENTRY failed.\n"); |
35f5886e | 2169 | } |
de43d7d0 | 2170 | if (ioctl (pi->fd, PIOCSTRACE, &pi->saved_trace) < 0) |
35f5886e | 2171 | { |
de43d7d0 | 2172 | print_sys_errmsg (pi->pathname, errno); |
199b2450 | 2173 | printf_unfiltered ("PIOCSTRACE failed.\n"); |
35f5886e | 2174 | } |
de43d7d0 | 2175 | if (ioctl (pi->fd, PIOCSHOLD, &pi->saved_sighold) < 0) |
cc221e76 | 2176 | { |
de43d7d0 | 2177 | print_sys_errmsg (pi->pathname, errno); |
199b2450 | 2178 | printf_unfiltered ("PIOSCHOLD failed.\n"); |
cc221e76 | 2179 | } |
de43d7d0 | 2180 | if (ioctl (pi->fd, PIOCSFAULT, &pi->saved_fltset) < 0) |
35f5886e | 2181 | { |
de43d7d0 | 2182 | print_sys_errmsg (pi->pathname, errno); |
199b2450 | 2183 | printf_unfiltered ("PIOCSFAULT failed.\n"); |
35f5886e | 2184 | } |
de43d7d0 | 2185 | if (ioctl (pi->fd, PIOCSTATUS, &pi->prstatus) < 0) |
35f5886e | 2186 | { |
de43d7d0 | 2187 | print_sys_errmsg (pi->pathname, errno); |
199b2450 | 2188 | printf_unfiltered ("PIOCSTATUS failed.\n"); |
35f5886e FF |
2189 | } |
2190 | else | |
2191 | { | |
de43d7d0 | 2192 | if (signal || (pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP))) |
35f5886e | 2193 | { |
de43d7d0 | 2194 | if (signal || !pi->was_stopped || |
35f5886e FF |
2195 | query ("Was stopped when attached, make it runnable again? ")) |
2196 | { | |
2592eef8 PS |
2197 | /* Clear any pending signal if we want to detach without |
2198 | a signal. */ | |
2199 | if (signal == 0) | |
2200 | set_proc_siginfo (pi, signal); | |
2201 | ||
ec8ceca3 | 2202 | /* Clear any fault that might have stopped it. */ |
de43d7d0 | 2203 | if (ioctl (pi->fd, PIOCCFAULT, 0)) |
eca4a350 SG |
2204 | { |
2205 | print_sys_errmsg (pi->pathname, errno); | |
199b2450 | 2206 | printf_unfiltered ("PIOCCFAULT failed.\n"); |
eca4a350 | 2207 | } |
ec8ceca3 JG |
2208 | |
2209 | /* Make it run again when we close it. */ | |
eca4a350 | 2210 | #if defined (PIOCSET) /* New method */ |
ec8ceca3 | 2211 | { |
eca4a350 SG |
2212 | long pr_flags; |
2213 | pr_flags = PR_RLC; | |
2214 | result = ioctl (pi->fd, PIOCSET, &pr_flags); | |
ec8ceca3 JG |
2215 | } |
2216 | #else | |
eca4a350 | 2217 | #if defined (PIOCSRLC) /* Original method */ |
de43d7d0 | 2218 | result = ioctl (pi->fd, PIOCSRLC, 0); |
ec8ceca3 JG |
2219 | #endif |
2220 | #endif | |
2221 | if (result) | |
35f5886e | 2222 | { |
de43d7d0 | 2223 | print_sys_errmsg (pi->pathname, errno); |
199b2450 | 2224 | printf_unfiltered ("PIOCSRLC or PIOCSET failed.\n"); |
35f5886e FF |
2225 | } |
2226 | } | |
2227 | } | |
2228 | } | |
de43d7d0 | 2229 | close_proc_file (pi); |
35f5886e FF |
2230 | attach_flag = 0; |
2231 | } | |
2232 | ||
45dc9be3 JK |
2233 | /* emulate wait() as much as possible. |
2234 | Wait for child to do something. Return pid of child, or -1 in case | |
2235 | of error; store status in *OURSTATUS. | |
2236 | ||
2237 | Not sure why we can't | |
2238 | just use wait(), but it seems to have problems when applied to a | |
2239 | process being controlled with the /proc interface. | |
2240 | ||
2241 | We have a race problem here with no obvious solution. We need to let | |
2242 | the inferior run until it stops on an event of interest, which means | |
2243 | that we need to use the PIOCWSTOP ioctl. However, we cannot use this | |
2244 | ioctl if the process is already stopped on something that is not an | |
2245 | event of interest, or the call will hang indefinitely. Thus we first | |
2246 | use PIOCSTATUS to see if the process is not stopped. If not, then we | |
2247 | use PIOCWSTOP. But during the window between the two, if the process | |
2248 | stops for any reason that is not an event of interest (such as a job | |
2249 | control signal) then gdb will hang. One possible workaround is to set | |
2250 | an alarm to wake up every minute of so and check to see if the process | |
2251 | is still running, and if so, then reissue the PIOCWSTOP. But this is | |
2252 | a real kludge, so has not been implemented. FIXME: investigate | |
2253 | alternatives. | |
2254 | ||
2255 | FIXME: Investigate why wait() seems to have problems with programs | |
2256 | being control by /proc routines. */ | |
35f5886e | 2257 | |
3fbdd536 | 2258 | static int |
45dc9be3 | 2259 | procfs_wait (pid, ourstatus) |
de43d7d0 | 2260 | int pid; |
67ac9759 | 2261 | struct target_waitstatus *ourstatus; |
35f5886e FF |
2262 | { |
2263 | short what; | |
2264 | short why; | |
2265 | int statval = 0; | |
2266 | int checkerr = 0; | |
2267 | int rtnval = -1; | |
de43d7d0 SG |
2268 | struct procinfo *pi; |
2269 | ||
2270 | if (pid != -1) /* Non-specific process? */ | |
2271 | pi = NULL; | |
2272 | else | |
2273 | for (pi = procinfo_list; pi; pi = pi->next) | |
2274 | if (pi->had_event) | |
2275 | break; | |
2276 | ||
de43d7d0 | 2277 | if (!pi) |
eca4a350 SG |
2278 | { |
2279 | wait_again: | |
2280 | ||
2281 | pi = wait_fd (); | |
2282 | } | |
de43d7d0 SG |
2283 | |
2284 | if (pid != -1) | |
2285 | for (pi = procinfo_list; pi; pi = pi->next) | |
2286 | if (pi->pid == pid && pi->had_event) | |
2287 | break; | |
2288 | ||
2289 | if (!pi && !checkerr) | |
2290 | goto wait_again; | |
2291 | ||
2292 | if (!checkerr && !(pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP))) | |
2293 | { | |
2294 | if (ioctl (pi->fd, PIOCWSTOP, &pi->prstatus) < 0) | |
2295 | { | |
2296 | checkerr++; | |
2297 | } | |
35f5886e FF |
2298 | } |
2299 | if (checkerr) | |
2300 | { | |
2301 | if (errno == ENOENT) | |
2302 | { | |
2303 | rtnval = wait (&statval); | |
2304 | if (rtnval != inferior_pid) | |
2305 | { | |
de43d7d0 | 2306 | print_sys_errmsg (pi->pathname, errno); |
35f5886e FF |
2307 | error ("PIOCWSTOP, wait failed, returned %d", rtnval); |
2308 | /* NOTREACHED */ | |
2309 | } | |
2310 | } | |
2311 | else | |
2312 | { | |
de43d7d0 | 2313 | print_sys_errmsg (pi->pathname, errno); |
35f5886e FF |
2314 | error ("PIOCSTATUS or PIOCWSTOP failed."); |
2315 | /* NOTREACHED */ | |
2316 | } | |
2317 | } | |
de43d7d0 | 2318 | else if (pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP)) |
35f5886e | 2319 | { |
de43d7d0 SG |
2320 | rtnval = pi->prstatus.pr_pid; |
2321 | why = pi->prstatus.pr_why; | |
2322 | what = pi->prstatus.pr_what; | |
2323 | ||
2324 | switch (why) | |
35f5886e | 2325 | { |
de43d7d0 | 2326 | case PR_SIGNALLED: |
35f5886e | 2327 | statval = (what << 8) | 0177; |
fb63d460 SG |
2328 | break; |
2329 | case PR_SYSENTRY: | |
2330 | if (what != SYS_exit) | |
2331 | error ("PR_SYSENTRY, unknown system call %d", what); | |
2332 | ||
2333 | pi->prrun.pr_flags = PRCFAULT; | |
2334 | ||
2335 | if (ioctl (pi->fd, PIOCRUN, &pi->prrun) != 0) | |
2336 | perror_with_name (pi->pathname); | |
2337 | ||
2338 | rtnval = wait (&statval); | |
2339 | ||
de43d7d0 SG |
2340 | break; |
2341 | case PR_SYSEXIT: | |
2342 | switch (what) | |
2343 | { | |
407a8389 | 2344 | #ifdef SYS_exec |
de43d7d0 | 2345 | case SYS_exec: |
407a8389 SG |
2346 | #endif |
2347 | #ifdef SYS_execve | |
de43d7d0 | 2348 | case SYS_execve: |
407a8389 SG |
2349 | #endif |
2350 | #ifdef SYS_execv | |
de43d7d0 | 2351 | case SYS_execv: |
407a8389 | 2352 | #endif |
de43d7d0 SG |
2353 | statval = (SIGTRAP << 8) | 0177; |
2354 | break; | |
2355 | #ifdef SYS_sproc | |
2356 | case SYS_sproc: | |
2357 | /* We've just detected the completion of an sproc system call. Now we need to | |
2358 | setup a procinfo struct for this thread, and notify the thread system of the | |
2359 | new arrival. */ | |
2360 | ||
2361 | /* If sproc failed, then nothing interesting happened. Continue the process and | |
2362 | go back to sleep. */ | |
2363 | ||
2364 | if (pi->prstatus.pr_errno != 0) | |
2365 | { | |
2366 | pi->prrun.pr_flags &= PRSTEP; | |
2367 | pi->prrun.pr_flags |= PRCFAULT; | |
2368 | ||
2369 | if (ioctl (pi->fd, PIOCRUN, &pi->prrun) != 0) | |
2370 | perror_with_name (pi->pathname); | |
2371 | ||
2372 | goto wait_again; | |
2373 | } | |
2374 | ||
2375 | /* At this point, the new thread is stopped at it's first instruction, and | |
2376 | the parent is stopped at the exit from sproc. */ | |
2377 | ||
2378 | /* Notify the caller of the arrival of a new thread. */ | |
2379 | create_procinfo (pi->prstatus.pr_rval1); | |
2380 | ||
2381 | rtnval = pi->prstatus.pr_rval1; | |
2382 | statval = (SIGTRAP << 8) | 0177; | |
2383 | ||
2384 | break; | |
eca4a350 SG |
2385 | case SYS_fork: |
2386 | #ifdef SYS_vfork | |
2387 | case SYS_vfork: | |
2388 | #endif | |
2389 | /* At this point, we've detected the completion of a fork (or vfork) call in | |
2390 | our child. The grandchild is also stopped because we set inherit-on-fork | |
2391 | earlier. (Note that nobody has the grandchilds' /proc file open at this | |
2392 | point.) We will release the grandchild from the debugger by opening it's | |
2393 | /proc file and then closing it. Since run-on-last-close is set, the | |
2394 | grandchild continues on its' merry way. */ | |
2395 | ||
2396 | { | |
2397 | struct procinfo *pitemp; | |
2398 | ||
2399 | pitemp = create_procinfo (pi->prstatus.pr_rval1); | |
2400 | if (pitemp) | |
2401 | close_proc_file (pitemp); | |
2402 | ||
2403 | if (ioctl (pi->fd, PIOCRUN, &pi->prrun) != 0) | |
2404 | perror_with_name (pi->pathname); | |
2405 | } | |
2406 | goto wait_again; | |
de43d7d0 SG |
2407 | #endif /* SYS_sproc */ |
2408 | ||
2409 | default: | |
2410 | error ("PIOCSTATUS (PR_SYSEXIT): Unknown system call %d", what); | |
2411 | } | |
2412 | break; | |
2413 | case PR_REQUESTED: | |
35f5886e | 2414 | statval = (SIGSTOP << 8) | 0177; |
de43d7d0 SG |
2415 | break; |
2416 | case PR_JOBCONTROL: | |
35f5886e | 2417 | statval = (what << 8) | 0177; |
de43d7d0 SG |
2418 | break; |
2419 | case PR_FAULTED: | |
35f5886e FF |
2420 | switch (what) |
2421 | { | |
e6b8a171 | 2422 | #ifdef FLTWATCH |
999dd04b | 2423 | case FLTWATCH: |
e6b8a171 JL |
2424 | statval = (SIGTRAP << 8) | 0177; |
2425 | break; | |
2426 | #endif | |
2427 | #ifdef FLTKWATCH | |
999dd04b | 2428 | case FLTKWATCH: |
35f5886e FF |
2429 | statval = (SIGTRAP << 8) | 0177; |
2430 | break; | |
e6b8a171 | 2431 | #endif |
3f5e2fb5 JK |
2432 | #ifndef FAULTED_USE_SIGINFO |
2433 | /* Irix, contrary to the documentation, fills in 0 for si_signo. | |
2434 | Solaris fills in si_signo. I'm not sure about others. */ | |
2435 | case FLTPRIV: | |
2436 | case FLTILL: | |
2437 | statval = (SIGILL << 8) | 0177; | |
2438 | break; | |
2439 | case FLTBPT: | |
2440 | case FLTTRACE: | |
2441 | statval = (SIGTRAP << 8) | 0177; | |
2442 | break; | |
2443 | case FLTSTACK: | |
2444 | case FLTACCESS: | |
2445 | case FLTBOUNDS: | |
2446 | statval = (SIGSEGV << 8) | 0177; | |
2447 | break; | |
2448 | case FLTIOVF: | |
2449 | case FLTIZDIV: | |
2450 | case FLTFPE: | |
2451 | statval = (SIGFPE << 8) | 0177; | |
2452 | break; | |
2453 | case FLTPAGE: /* Recoverable page fault */ | |
2454 | #endif /* not FAULTED_USE_SIGINFO */ | |
35f5886e | 2455 | default: |
890634ed JK |
2456 | /* Use the signal which the kernel assigns. This is better than |
2457 | trying to second-guess it from the fault. In fact, I suspect | |
2458 | that FLTACCESS can be either SIGSEGV or SIGBUS. */ | |
2459 | statval = ((pi->prstatus.pr_info.si_signo) << 8) | 0177; | |
2460 | break; | |
35f5886e | 2461 | } |
de43d7d0 SG |
2462 | break; |
2463 | default: | |
35f5886e | 2464 | error ("PIOCWSTOP, unknown why %d, what %d", why, what); |
35f5886e | 2465 | } |
de43d7d0 SG |
2466 | /* Stop all the other threads when any of them stops. */ |
2467 | ||
2468 | { | |
2469 | struct procinfo *procinfo; | |
2470 | ||
2471 | for (procinfo = procinfo_list; procinfo; procinfo = procinfo->next) | |
2472 | { | |
2473 | if (!procinfo->had_event) | |
2474 | if (ioctl (procinfo->fd, PIOCSTOP, &procinfo->prstatus) < 0) | |
2475 | { | |
2476 | print_sys_errmsg (procinfo->pathname, errno); | |
2477 | error ("PIOCSTOP failed"); | |
2478 | } | |
2479 | } | |
2480 | } | |
35f5886e FF |
2481 | } |
2482 | else | |
2483 | { | |
2484 | error ("PIOCWSTOP, stopped for unknown/unhandled reason, flags %#x", | |
de43d7d0 | 2485 | pi->prstatus.pr_flags); |
35f5886e | 2486 | } |
3fbdd536 | 2487 | |
67ac9759 | 2488 | store_waitstatus (ourstatus, statval); |
3fbdd536 JG |
2489 | |
2490 | if (rtnval == -1) /* No more children to wait for */ | |
2491 | { | |
199b2450 | 2492 | fprintf_unfiltered (gdb_stderr, "Child process unexpectedly missing.\n"); |
67ac9759 JK |
2493 | /* Claim it exited with unknown signal. */ |
2494 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
2495 | ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN; | |
3fbdd536 JG |
2496 | return rtnval; |
2497 | } | |
2498 | ||
de43d7d0 | 2499 | pi->had_event = 0; /* Indicate that we've seen this one */ |
35f5886e FF |
2500 | return (rtnval); |
2501 | } | |
2502 | ||
2503 | /* | |
2504 | ||
6b801388 FF |
2505 | LOCAL FUNCTION |
2506 | ||
2507 | set_proc_siginfo - set a process's current signal info | |
2508 | ||
2509 | SYNOPSIS | |
2510 | ||
2511 | void set_proc_siginfo (struct procinfo *pip, int signo); | |
2512 | ||
2513 | DESCRIPTION | |
2514 | ||
2515 | Given a pointer to a process info struct in PIP and a signal number | |
2516 | in SIGNO, set the process's current signal and its associated signal | |
2517 | information. The signal will be delivered to the process immediately | |
2518 | after execution is resumed, even if it is being held. In addition, | |
2519 | this particular delivery will not cause another PR_SIGNALLED stop | |
2520 | even if the signal is being traced. | |
2521 | ||
2522 | If we are not delivering the same signal that the prstatus siginfo | |
2523 | struct contains information about, then synthesize a siginfo struct | |
2524 | to match the signal we are doing to deliver, make it of the type | |
2525 | "generated by a user process", and send this synthesized copy. When | |
2526 | used to set the inferior's signal state, this will be required if we | |
2527 | are not currently stopped because of a traced signal, or if we decide | |
2528 | to continue with a different signal. | |
2529 | ||
2530 | Note that when continuing the inferior from a stop due to receipt | |
2531 | of a traced signal, we either have set PRCSIG to clear the existing | |
2532 | signal, or we have to call this function to do a PIOCSSIG with either | |
2533 | the existing siginfo struct from pr_info, or one we have synthesized | |
2534 | appropriately for the signal we want to deliver. Otherwise if the | |
2535 | signal is still being traced, the inferior will immediately stop | |
2536 | again. | |
2537 | ||
2538 | See siginfo(5) for more details. | |
2539 | */ | |
2540 | ||
2541 | static void | |
2542 | set_proc_siginfo (pip, signo) | |
cc221e76 FF |
2543 | struct procinfo *pip; |
2544 | int signo; | |
6b801388 FF |
2545 | { |
2546 | struct siginfo newsiginfo; | |
2547 | struct siginfo *sip; | |
2548 | ||
2592eef8 PS |
2549 | #ifdef PROCFS_DONT_PIOCSSIG_CURSIG |
2550 | /* With Alpha OSF/1 procfs, the kernel gets really confused if it | |
2551 | receives a PIOCSSSIG with a signal identical to the current signal, | |
2552 | it messes up the current signal. Work around the kernel bug. */ | |
2553 | if (signo == pip -> prstatus.pr_cursig) | |
2554 | return; | |
2555 | #endif | |
2556 | ||
de43d7d0 | 2557 | if (signo == pip -> prstatus.pr_info.si_signo) |
6b801388 | 2558 | { |
de43d7d0 SG |
2559 | sip = &pip -> prstatus.pr_info; |
2560 | } | |
2561 | else | |
2562 | { | |
2563 | memset ((char *) &newsiginfo, 0, sizeof (newsiginfo)); | |
2564 | sip = &newsiginfo; | |
2565 | sip -> si_signo = signo; | |
2566 | sip -> si_code = 0; | |
2567 | sip -> si_errno = 0; | |
2568 | sip -> si_pid = getpid (); | |
2569 | sip -> si_uid = getuid (); | |
2570 | } | |
2571 | if (ioctl (pip -> fd, PIOCSSIG, sip) < 0) | |
2572 | { | |
2573 | print_sys_errmsg (pip -> pathname, errno); | |
2574 | warning ("PIOCSSIG failed"); | |
6b801388 FF |
2575 | } |
2576 | } | |
2577 | ||
25286543 | 2578 | /* Resume execution of process PID. If STEP is nozero, then |
59ba57da JK |
2579 | just single step it. If SIGNAL is nonzero, restart it with that |
2580 | signal activated. */ | |
35f5886e | 2581 | |
3fbdd536 | 2582 | static void |
25286543 SG |
2583 | procfs_resume (pid, step, signo) |
2584 | int pid; | |
1ab3bf1b | 2585 | int step; |
67ac9759 | 2586 | enum target_signal signo; |
35f5886e | 2587 | { |
59ba57da | 2588 | int signal_to_pass; |
de43d7d0 SG |
2589 | struct procinfo *pi, *procinfo; |
2590 | ||
2591 | pi = find_procinfo (pid == -1 ? inferior_pid : pid, 0); | |
59ba57da | 2592 | |
35f5886e | 2593 | errno = 0; |
de43d7d0 | 2594 | pi->prrun.pr_flags = PRSTRACE | PRSFAULT | PRCFAULT; |
99fd9e3e | 2595 | |
59ba57da JK |
2596 | #if 0 |
2597 | /* It should not be necessary. If the user explicitly changes the value, | |
2598 | value_assign calls write_register_bytes, which writes it. */ | |
2599 | /* It may not be absolutely necessary to specify the PC value for | |
2600 | restarting, but to be safe we use the value that gdb considers | |
2601 | to be current. One case where this might be necessary is if the | |
2602 | user explicitly changes the PC value that gdb considers to be | |
2603 | current. FIXME: Investigate if this is necessary or not. */ | |
2604 | ||
c3192172 | 2605 | #ifdef PRSVADDR_BROKEN |
99fd9e3e SG |
2606 | /* Can't do this under Solaris running on a Sparc, as there seems to be no |
2607 | place to put nPC. In fact, if you use this, nPC seems to be set to some | |
2608 | random garbage. We have to rely on the fact that PC and nPC have been | |
2609 | written previously via PIOCSREG during a register flush. */ | |
2610 | ||
de43d7d0 SG |
2611 | pi->prrun.pr_vaddr = (caddr_t) *(int *) ®isters[REGISTER_BYTE (PC_REGNUM)]; |
2612 | pi->prrun.pr_flags != PRSVADDR; | |
99fd9e3e | 2613 | #endif |
59ba57da JK |
2614 | #endif |
2615 | ||
67ac9759 | 2616 | if (signo == TARGET_SIGNAL_STOP && pi->nopass_next_sigstop) |
59ba57da JK |
2617 | /* When attaching to a child process, if we forced it to stop with |
2618 | a PIOCSTOP, then we will have set the nopass_next_sigstop flag. | |
2619 | Upon resuming the first time after such a stop, we explicitly | |
2620 | inhibit sending it another SIGSTOP, which would be the normal | |
2621 | result of default signal handling. One potential drawback to | |
2622 | this is that we will also ignore any attempt to by the user | |
2623 | to explicitly continue after the attach with a SIGSTOP. Ultimately | |
2624 | this problem should be dealt with by making the routines that | |
2625 | deal with the inferior a little smarter, and possibly even allow | |
2626 | an inferior to continue running at the same time as gdb. (FIXME?) */ | |
2627 | signal_to_pass = 0; | |
67ac9759 | 2628 | else if (signo == TARGET_SIGNAL_TSTP |
de43d7d0 SG |
2629 | && pi->prstatus.pr_cursig == SIGTSTP |
2630 | && pi->prstatus.pr_action.sa_handler == SIG_DFL) | |
59ba57da JK |
2631 | |
2632 | /* We are about to pass the inferior a SIGTSTP whose action is | |
2633 | SIG_DFL. The SIG_DFL action for a SIGTSTP is to stop | |
2634 | (notifying the parent via wait()), and then keep going from the | |
2635 | same place when the parent is ready for you to keep going. So | |
2636 | under the debugger, it should do nothing (as if the program had | |
2637 | been stopped and then later resumed. Under ptrace, this | |
2638 | happens for us, but under /proc, the system obligingly stops | |
2639 | the process, and wait_for_inferior would have no way of | |
2640 | distinguishing that type of stop (which indicates that we | |
2641 | should just start it again), with a stop due to the pr_trace | |
2642 | field of the prrun_t struct. | |
2643 | ||
2644 | Note that if the SIGTSTP is being caught, we *do* need to pass it, | |
2645 | because the handler needs to get executed. */ | |
2646 | signal_to_pass = 0; | |
2647 | else | |
67ac9759 | 2648 | signal_to_pass = target_signal_to_host (signo); |
99fd9e3e | 2649 | |
59ba57da | 2650 | if (signal_to_pass) |
35f5886e | 2651 | { |
de43d7d0 | 2652 | set_proc_siginfo (pi, signal_to_pass); |
35f5886e FF |
2653 | } |
2654 | else | |
2655 | { | |
de43d7d0 | 2656 | pi->prrun.pr_flags |= PRCSIG; |
35f5886e | 2657 | } |
de43d7d0 | 2658 | pi->nopass_next_sigstop = 0; |
35f5886e FF |
2659 | if (step) |
2660 | { | |
de43d7d0 | 2661 | pi->prrun.pr_flags |= PRSTEP; |
35f5886e | 2662 | } |
de43d7d0 | 2663 | if (ioctl (pi->fd, PIOCRUN, &pi->prrun) != 0) |
35f5886e | 2664 | { |
de43d7d0 | 2665 | perror_with_name (pi->pathname); |
35f5886e FF |
2666 | /* NOTREACHED */ |
2667 | } | |
de43d7d0 SG |
2668 | |
2669 | pi->had_event = 0; | |
2670 | ||
2671 | /* Continue all the other threads that haven't had an event of | |
2672 | interest. */ | |
2673 | ||
2674 | if (pid == -1) | |
2675 | for (procinfo = procinfo_list; procinfo; procinfo = procinfo->next) | |
2676 | { | |
2677 | if (pi != procinfo && !procinfo->had_event) | |
2678 | { | |
2679 | procinfo->prrun.pr_flags &= PRSTEP; | |
2680 | procinfo->prrun.pr_flags |= PRCFAULT | PRCSIG; | |
2681 | ioctl (procinfo->fd, PIOCSTATUS, &procinfo->prstatus); | |
2682 | if (ioctl (procinfo->fd, PIOCRUN, &procinfo->prrun) < 0) | |
2683 | { | |
2684 | if (ioctl (procinfo->fd, PIOCSTATUS, &procinfo->prstatus) < 0) | |
2685 | { | |
199b2450 | 2686 | fprintf_unfiltered(gdb_stderr, "PIOCSTATUS failed, errno=%d\n", errno); |
de43d7d0 SG |
2687 | } |
2688 | print_sys_errmsg (procinfo->pathname, errno); | |
2689 | error ("PIOCRUN failed"); | |
2690 | } | |
2691 | ioctl (procinfo->fd, PIOCSTATUS, &procinfo->prstatus); | |
2692 | } | |
2693 | } | |
35f5886e FF |
2694 | } |
2695 | ||
2696 | /* | |
2697 | ||
3fbdd536 | 2698 | LOCAL FUNCTION |
35f5886e | 2699 | |
3fbdd536 | 2700 | procfs_fetch_registers -- fetch current registers from inferior |
35f5886e FF |
2701 | |
2702 | SYNOPSIS | |
2703 | ||
3fbdd536 | 2704 | void procfs_fetch_registers (int regno) |
35f5886e FF |
2705 | |
2706 | DESCRIPTION | |
2707 | ||
2708 | Read the current values of the inferior's registers, both the | |
2709 | general register set and floating point registers (if supported) | |
2710 | and update gdb's idea of their current values. | |
2711 | ||
2712 | */ | |
2713 | ||
3fbdd536 JG |
2714 | static void |
2715 | procfs_fetch_registers (regno) | |
1ab3bf1b | 2716 | int regno; |
35f5886e | 2717 | { |
de43d7d0 SG |
2718 | struct procinfo *pi; |
2719 | ||
2720 | pi = current_procinfo; | |
2721 | ||
2722 | if (ioctl (pi->fd, PIOCGREG, &pi->gregset) != -1) | |
35f5886e | 2723 | { |
de43d7d0 | 2724 | supply_gregset (&pi->gregset); |
35f5886e FF |
2725 | } |
2726 | #if defined (FP0_REGNUM) | |
de43d7d0 | 2727 | if (ioctl (pi->fd, PIOCGFPREG, &pi->fpregset) != -1) |
35f5886e | 2728 | { |
de43d7d0 | 2729 | supply_fpregset (&pi->fpregset); |
35f5886e FF |
2730 | } |
2731 | #endif | |
2732 | } | |
2733 | ||
fb182850 FF |
2734 | /* |
2735 | ||
35f5886e FF |
2736 | LOCAL FUNCTION |
2737 | ||
de43d7d0 SG |
2738 | proc_init_failed - called whenever /proc access initialization |
2739 | fails | |
35f5886e FF |
2740 | |
2741 | SYNOPSIS | |
2742 | ||
de43d7d0 | 2743 | static void proc_init_failed (struct procinfo *pi, char *why) |
35f5886e FF |
2744 | |
2745 | DESCRIPTION | |
2746 | ||
2747 | This function is called whenever initialization of access to a /proc | |
2748 | entry fails. It prints a suitable error message, does some cleanup, | |
2749 | and then invokes the standard error processing routine which dumps | |
2750 | us back into the command loop. | |
2751 | */ | |
2752 | ||
2753 | static void | |
de43d7d0 SG |
2754 | proc_init_failed (pi, why) |
2755 | struct procinfo *pi; | |
1ab3bf1b | 2756 | char *why; |
35f5886e | 2757 | { |
de43d7d0 SG |
2758 | print_sys_errmsg (pi->pathname, errno); |
2759 | kill (pi->pid, SIGKILL); | |
2760 | close_proc_file (pi); | |
35f5886e FF |
2761 | error (why); |
2762 | /* NOTREACHED */ | |
2763 | } | |
2764 | ||
2765 | /* | |
2766 | ||
2767 | LOCAL FUNCTION | |
2768 | ||
2769 | close_proc_file - close any currently open /proc entry | |
2770 | ||
2771 | SYNOPSIS | |
2772 | ||
a39ad5ce | 2773 | static void close_proc_file (struct procinfo *pip) |
35f5886e FF |
2774 | |
2775 | DESCRIPTION | |
2776 | ||
2777 | Close any currently open /proc entry and mark the process information | |
2778 | entry as invalid. In order to ensure that we don't try to reuse any | |
2779 | stale information, the pid, fd, and pathnames are explicitly | |
2780 | invalidated, which may be overkill. | |
2781 | ||
2782 | */ | |
2783 | ||
2784 | static void | |
1ab3bf1b JG |
2785 | close_proc_file (pip) |
2786 | struct procinfo *pip; | |
35f5886e | 2787 | { |
de43d7d0 SG |
2788 | struct procinfo *procinfo; |
2789 | ||
2790 | remove_fd (pip); /* Remove fd from poll/select list */ | |
2791 | ||
2792 | close (pip -> fd); | |
2793 | ||
2794 | free (pip -> pathname); | |
2795 | ||
2796 | /* Unlink pip from the procinfo chain. Note pip might not be on the list. */ | |
2797 | ||
2798 | if (procinfo_list == pip) | |
2799 | procinfo_list = pip->next; | |
2800 | else | |
2801 | for (procinfo = procinfo_list; procinfo; procinfo = procinfo->next) | |
2802 | if (procinfo->next == pip) | |
2803 | procinfo->next = pip->next; | |
2804 | ||
2805 | free (pip); | |
35f5886e FF |
2806 | } |
2807 | ||
2808 | /* | |
2809 | ||
2810 | LOCAL FUNCTION | |
2811 | ||
2812 | open_proc_file - open a /proc entry for a given process id | |
2813 | ||
2814 | SYNOPSIS | |
2815 | ||
ec8ceca3 | 2816 | static int open_proc_file (int pid, struct procinfo *pip, int mode) |
35f5886e FF |
2817 | |
2818 | DESCRIPTION | |
2819 | ||
ec8ceca3 JG |
2820 | Given a process id and a mode, close the existing open /proc |
2821 | entry (if any) and open one for the new process id, in the | |
2822 | specified mode. Once it is open, then mark the local process | |
2823 | information structure as valid, which guarantees that the pid, | |
2824 | fd, and pathname fields match an open /proc entry. Returns | |
2825 | zero if the open fails, nonzero otherwise. | |
35f5886e FF |
2826 | |
2827 | Note that the pathname is left intact, even when the open fails, | |
2828 | so that callers can use it to construct meaningful error messages | |
2829 | rather than just "file open failed". | |
2830 | */ | |
2831 | ||
2832 | static int | |
ec8ceca3 | 2833 | open_proc_file (pid, pip, mode) |
1ab3bf1b JG |
2834 | int pid; |
2835 | struct procinfo *pip; | |
ec8ceca3 | 2836 | int mode; |
35f5886e | 2837 | { |
de43d7d0 SG |
2838 | pip -> next = NULL; |
2839 | pip -> had_event = 0; | |
2840 | pip -> pathname = xmalloc (32); | |
2841 | pip -> pid = pid; | |
2842 | ||
a39ad5ce | 2843 | sprintf (pip -> pathname, PROC_NAME_FMT, pid); |
de43d7d0 SG |
2844 | if ((pip -> fd = open (pip -> pathname, mode)) < 0) |
2845 | return 0; | |
2846 | ||
2847 | return 1; | |
a39ad5ce FF |
2848 | } |
2849 | ||
f66f459f | 2850 | static char * |
1ab3bf1b JG |
2851 | mappingflags (flags) |
2852 | long flags; | |
a39ad5ce | 2853 | { |
5c1c5e67 | 2854 | static char asciiflags[8]; |
a39ad5ce | 2855 | |
5c1c5e67 FF |
2856 | strcpy (asciiflags, "-------"); |
2857 | #if defined (MA_PHYS) | |
2858 | if (flags & MA_PHYS) asciiflags[0] = 'd'; | |
2859 | #endif | |
2860 | if (flags & MA_STACK) asciiflags[1] = 's'; | |
2861 | if (flags & MA_BREAK) asciiflags[2] = 'b'; | |
2862 | if (flags & MA_SHARED) asciiflags[3] = 's'; | |
2863 | if (flags & MA_READ) asciiflags[4] = 'r'; | |
2864 | if (flags & MA_WRITE) asciiflags[5] = 'w'; | |
2865 | if (flags & MA_EXEC) asciiflags[6] = 'x'; | |
a39ad5ce FF |
2866 | return (asciiflags); |
2867 | } | |
2868 | ||
2869 | static void | |
cc221e76 FF |
2870 | info_proc_flags (pip, summary) |
2871 | struct procinfo *pip; | |
2872 | int summary; | |
2873 | { | |
2874 | struct trans *transp; | |
2875 | ||
2876 | printf_filtered ("%-32s", "Process status flags:"); | |
2877 | if (!summary) | |
2878 | { | |
2879 | printf_filtered ("\n\n"); | |
2880 | } | |
2881 | for (transp = pr_flag_table; transp -> name != NULL; transp++) | |
2882 | { | |
2883 | if (pip -> prstatus.pr_flags & transp -> value) | |
2884 | { | |
2885 | if (summary) | |
2886 | { | |
2887 | printf_filtered ("%s ", transp -> name); | |
2888 | } | |
2889 | else | |
2890 | { | |
2891 | printf_filtered ("\t%-16s %s.\n", transp -> name, transp -> desc); | |
2892 | } | |
2893 | } | |
2894 | } | |
2895 | printf_filtered ("\n"); | |
2896 | } | |
2897 | ||
2898 | static void | |
2899 | info_proc_stop (pip, summary) | |
2900 | struct procinfo *pip; | |
2901 | int summary; | |
2902 | { | |
2903 | struct trans *transp; | |
2904 | int why; | |
2905 | int what; | |
2906 | ||
2907 | why = pip -> prstatus.pr_why; | |
2908 | what = pip -> prstatus.pr_what; | |
2909 | ||
2910 | if (pip -> prstatus.pr_flags & PR_STOPPED) | |
2911 | { | |
2912 | printf_filtered ("%-32s", "Reason for stopping:"); | |
2913 | if (!summary) | |
2914 | { | |
2915 | printf_filtered ("\n\n"); | |
2916 | } | |
2917 | for (transp = pr_why_table; transp -> name != NULL; transp++) | |
2918 | { | |
2919 | if (why == transp -> value) | |
2920 | { | |
2921 | if (summary) | |
2922 | { | |
2923 | printf_filtered ("%s ", transp -> name); | |
2924 | } | |
2925 | else | |
2926 | { | |
2927 | printf_filtered ("\t%-16s %s.\n", | |
2928 | transp -> name, transp -> desc); | |
2929 | } | |
2930 | break; | |
2931 | } | |
2932 | } | |
2933 | ||
2934 | /* Use the pr_why field to determine what the pr_what field means, and | |
2935 | print more information. */ | |
2936 | ||
2937 | switch (why) | |
2938 | { | |
2939 | case PR_REQUESTED: | |
2940 | /* pr_what is unused for this case */ | |
2941 | break; | |
2942 | case PR_JOBCONTROL: | |
2943 | case PR_SIGNALLED: | |
2944 | if (summary) | |
2945 | { | |
2946 | printf_filtered ("%s ", signalname (what)); | |
2947 | } | |
2948 | else | |
2949 | { | |
2950 | printf_filtered ("\t%-16s %s.\n", signalname (what), | |
4ace50a5 | 2951 | safe_strsignal (what)); |
cc221e76 FF |
2952 | } |
2953 | break; | |
2954 | case PR_SYSENTRY: | |
2955 | if (summary) | |
2956 | { | |
2957 | printf_filtered ("%s ", syscallname (what)); | |
2958 | } | |
2959 | else | |
2960 | { | |
2961 | printf_filtered ("\t%-16s %s.\n", syscallname (what), | |
2962 | "Entered this system call"); | |
2963 | } | |
2964 | break; | |
2965 | case PR_SYSEXIT: | |
2966 | if (summary) | |
2967 | { | |
2968 | printf_filtered ("%s ", syscallname (what)); | |
2969 | } | |
2970 | else | |
2971 | { | |
2972 | printf_filtered ("\t%-16s %s.\n", syscallname (what), | |
2973 | "Returned from this system call"); | |
2974 | } | |
2975 | break; | |
2976 | case PR_FAULTED: | |
2977 | if (summary) | |
2978 | { | |
2979 | printf_filtered ("%s ", | |
2980 | lookupname (faults_table, what, "fault")); | |
2981 | } | |
2982 | else | |
2983 | { | |
2984 | printf_filtered ("\t%-16s %s.\n", | |
2985 | lookupname (faults_table, what, "fault"), | |
2986 | lookupdesc (faults_table, what)); | |
2987 | } | |
2988 | break; | |
2989 | } | |
2990 | printf_filtered ("\n"); | |
2991 | } | |
2992 | } | |
2993 | ||
2994 | static void | |
2995 | info_proc_siginfo (pip, summary) | |
2996 | struct procinfo *pip; | |
2997 | int summary; | |
2998 | { | |
2999 | struct siginfo *sip; | |
3000 | ||
3001 | if ((pip -> prstatus.pr_flags & PR_STOPPED) && | |
3002 | (pip -> prstatus.pr_why == PR_SIGNALLED || | |
3003 | pip -> prstatus.pr_why == PR_FAULTED)) | |
3004 | { | |
3005 | printf_filtered ("%-32s", "Additional signal/fault info:"); | |
3006 | sip = &pip -> prstatus.pr_info; | |
3007 | if (summary) | |
3008 | { | |
3009 | printf_filtered ("%s ", signalname (sip -> si_signo)); | |
3010 | if (sip -> si_errno > 0) | |
3011 | { | |
4ace50a5 | 3012 | printf_filtered ("%s ", errnoname (sip -> si_errno)); |
cc221e76 FF |
3013 | } |
3014 | if (sip -> si_code <= 0) | |
3015 | { | |
25286543 SG |
3016 | printf_filtered ("sent by %s, uid %d ", |
3017 | target_pid_to_str (sip -> si_pid), | |
cc221e76 FF |
3018 | sip -> si_uid); |
3019 | } | |
3020 | else | |
3021 | { | |
3022 | printf_filtered ("%s ", sigcodename (sip)); | |
3023 | if ((sip -> si_signo == SIGILL) || | |
3024 | (sip -> si_signo == SIGFPE) || | |
3025 | (sip -> si_signo == SIGSEGV) || | |
3026 | (sip -> si_signo == SIGBUS)) | |
3027 | { | |
3028 | printf_filtered ("addr=%#x ", sip -> si_addr); | |
3029 | } | |
3030 | else if ((sip -> si_signo == SIGCHLD)) | |
3031 | { | |
25286543 SG |
3032 | printf_filtered ("child %s, status %u ", |
3033 | target_pid_to_str (sip -> si_pid), | |
cc221e76 FF |
3034 | sip -> si_status); |
3035 | } | |
3036 | else if ((sip -> si_signo == SIGPOLL)) | |
3037 | { | |
3038 | printf_filtered ("band %u ", sip -> si_band); | |
3039 | } | |
3040 | } | |
3041 | } | |
3042 | else | |
3043 | { | |
3044 | printf_filtered ("\n\n"); | |
3045 | printf_filtered ("\t%-16s %s.\n", signalname (sip -> si_signo), | |
4ace50a5 | 3046 | safe_strsignal (sip -> si_signo)); |
cc221e76 FF |
3047 | if (sip -> si_errno > 0) |
3048 | { | |
3049 | printf_filtered ("\t%-16s %s.\n", | |
4ace50a5 FF |
3050 | errnoname (sip -> si_errno), |
3051 | safe_strerror (sip -> si_errno)); | |
cc221e76 FF |
3052 | } |
3053 | if (sip -> si_code <= 0) | |
3054 | { | |
25286543 | 3055 | printf_filtered ("\t%-16u %s\n", sip -> si_pid, /* XXX need target_pid_to_str() */ |
cc221e76 FF |
3056 | "PID of process sending signal"); |
3057 | printf_filtered ("\t%-16u %s\n", sip -> si_uid, | |
3058 | "UID of process sending signal"); | |
3059 | } | |
3060 | else | |
3061 | { | |
3062 | printf_filtered ("\t%-16s %s.\n", sigcodename (sip), | |
3063 | sigcodedesc (sip)); | |
3064 | if ((sip -> si_signo == SIGILL) || | |
3065 | (sip -> si_signo == SIGFPE)) | |
3066 | { | |
3067 | printf_filtered ("\t%-16#x %s.\n", sip -> si_addr, | |
3068 | "Address of faulting instruction"); | |
3069 | } | |
3070 | else if ((sip -> si_signo == SIGSEGV) || | |
3071 | (sip -> si_signo == SIGBUS)) | |
3072 | { | |
3073 | printf_filtered ("\t%-16#x %s.\n", sip -> si_addr, | |
3074 | "Address of faulting memory reference"); | |
3075 | } | |
3076 | else if ((sip -> si_signo == SIGCHLD)) | |
3077 | { | |
25286543 | 3078 | printf_filtered ("\t%-16u %s.\n", sip -> si_pid, /* XXX need target_pid_to_str() */ |
cc221e76 FF |
3079 | "Child process ID"); |
3080 | printf_filtered ("\t%-16u %s.\n", sip -> si_status, | |
3081 | "Child process exit value or signal"); | |
3082 | } | |
3083 | else if ((sip -> si_signo == SIGPOLL)) | |
3084 | { | |
3085 | printf_filtered ("\t%-16u %s.\n", sip -> si_band, | |
3086 | "Band event for POLL_{IN,OUT,MSG}"); | |
3087 | } | |
3088 | } | |
3089 | } | |
3090 | printf_filtered ("\n"); | |
3091 | } | |
3092 | } | |
3093 | ||
3094 | static void | |
3095 | info_proc_syscalls (pip, summary) | |
3096 | struct procinfo *pip; | |
3097 | int summary; | |
3098 | { | |
3099 | int syscallnum; | |
3100 | ||
3101 | if (!summary) | |
3102 | { | |
3103 | ||
3104 | #if 0 /* FIXME: Needs to use gdb-wide configured info about system calls. */ | |
3105 | if (pip -> prstatus.pr_flags & PR_ASLEEP) | |
3106 | { | |
3107 | int syscallnum = pip -> prstatus.pr_reg[R_D0]; | |
3108 | if (summary) | |
3109 | { | |
3110 | printf_filtered ("%-32s", "Sleeping in system call:"); | |
3111 | printf_filtered ("%s", syscallname (syscallnum)); | |
3112 | } | |
3113 | else | |
3114 | { | |
3115 | printf_filtered ("Sleeping in system call '%s'.\n", | |
3116 | syscallname (syscallnum)); | |
3117 | } | |
3118 | } | |
3119 | #endif | |
3120 | ||
3121 | if (ioctl (pip -> fd, PIOCGENTRY, &pip -> entryset) < 0) | |
3122 | { | |
3123 | print_sys_errmsg (pip -> pathname, errno); | |
3124 | error ("PIOCGENTRY failed"); | |
3125 | } | |
3126 | ||
3127 | if (ioctl (pip -> fd, PIOCGEXIT, &pip -> exitset) < 0) | |
3128 | { | |
3129 | print_sys_errmsg (pip -> pathname, errno); | |
3130 | error ("PIOCGEXIT failed"); | |
3131 | } | |
3132 | ||
3133 | printf_filtered ("System call tracing information:\n\n"); | |
3134 | ||
3135 | printf_filtered ("\t%-12s %-8s %-8s\n", | |
3136 | "System call", | |
3137 | "Entry", | |
3138 | "Exit"); | |
3139 | for (syscallnum = 0; syscallnum < MAX_SYSCALLS; syscallnum++) | |
3140 | { | |
3141 | QUIT; | |
3142 | if (syscall_table[syscallnum] != NULL) | |
3143 | { | |
3144 | printf_filtered ("\t%-12s ", syscall_table[syscallnum]); | |
3145 | printf_filtered ("%-8s ", | |
3146 | prismember (&pip -> entryset, syscallnum) | |
3147 | ? "on" : "off"); | |
3148 | printf_filtered ("%-8s ", | |
3149 | prismember (&pip -> exitset, syscallnum) | |
3150 | ? "on" : "off"); | |
3151 | printf_filtered ("\n"); | |
3152 | } | |
3153 | } | |
3154 | printf_filtered ("\n"); | |
3155 | } | |
3156 | } | |
3157 | ||
3158 | static char * | |
3159 | signalname (signo) | |
3160 | int signo; | |
3161 | { | |
26a859ec | 3162 | const char *name; |
4ace50a5 FF |
3163 | static char locbuf[32]; |
3164 | ||
3165 | name = strsigno (signo); | |
3166 | if (name == NULL) | |
3167 | { | |
3168 | sprintf (locbuf, "Signal %d", signo); | |
3169 | } | |
3170 | else | |
3171 | { | |
3172 | sprintf (locbuf, "%s (%d)", name, signo); | |
3173 | } | |
3174 | return (locbuf); | |
3175 | } | |
3176 | ||
3177 | static char * | |
3178 | errnoname (errnum) | |
3179 | int errnum; | |
3180 | { | |
26a859ec | 3181 | const char *name; |
cc221e76 FF |
3182 | static char locbuf[32]; |
3183 | ||
4ace50a5 FF |
3184 | name = strerrno (errnum); |
3185 | if (name == NULL) | |
cc221e76 | 3186 | { |
4ace50a5 | 3187 | sprintf (locbuf, "Errno %d", errnum); |
cc221e76 FF |
3188 | } |
3189 | else | |
3190 | { | |
4ace50a5 | 3191 | sprintf (locbuf, "%s (%d)", name, errnum); |
cc221e76 FF |
3192 | } |
3193 | return (locbuf); | |
3194 | } | |
3195 | ||
3196 | static void | |
3197 | info_proc_signals (pip, summary) | |
3198 | struct procinfo *pip; | |
3199 | int summary; | |
3200 | { | |
3201 | int signo; | |
3202 | ||
3203 | if (!summary) | |
3204 | { | |
3205 | if (ioctl (pip -> fd, PIOCGTRACE, &pip -> trace) < 0) | |
3206 | { | |
3207 | print_sys_errmsg (pip -> pathname, errno); | |
3208 | error ("PIOCGTRACE failed"); | |
3209 | } | |
3210 | ||
3211 | printf_filtered ("Disposition of signals:\n\n"); | |
3212 | printf_filtered ("\t%-15s %-8s %-8s %-8s %s\n\n", | |
3213 | "Signal", "Trace", "Hold", "Pending", "Description"); | |
3214 | for (signo = 0; signo < NSIG; signo++) | |
3215 | { | |
3216 | QUIT; | |
3217 | printf_filtered ("\t%-15s ", signalname (signo)); | |
3218 | printf_filtered ("%-8s ", | |
3219 | prismember (&pip -> trace, signo) | |
3220 | ? "on" : "off"); | |
3221 | printf_filtered ("%-8s ", | |
3222 | prismember (&pip -> prstatus.pr_sighold, signo) | |
3223 | ? "on" : "off"); | |
2592eef8 PS |
3224 | |
3225 | #ifdef PROCFS_SIGPEND_OFFSET | |
3226 | /* Alpha OSF/1 numbers the pending signals from 1. */ | |
3227 | printf_filtered ("%-8s ", | |
3228 | (signo ? prismember (&pip -> prstatus.pr_sigpend, | |
3229 | signo - 1) | |
3230 | : 0) | |
3231 | ? "yes" : "no"); | |
3232 | #else | |
cc221e76 FF |
3233 | printf_filtered ("%-8s ", |
3234 | prismember (&pip -> prstatus.pr_sigpend, signo) | |
3235 | ? "yes" : "no"); | |
2592eef8 | 3236 | #endif |
4ace50a5 | 3237 | printf_filtered (" %s\n", safe_strsignal (signo)); |
cc221e76 FF |
3238 | } |
3239 | printf_filtered ("\n"); | |
3240 | } | |
3241 | } | |
3242 | ||
3243 | static void | |
3244 | info_proc_faults (pip, summary) | |
3245 | struct procinfo *pip; | |
3246 | int summary; | |
3247 | { | |
3248 | struct trans *transp; | |
3249 | ||
3250 | if (!summary) | |
3251 | { | |
3252 | if (ioctl (pip -> fd, PIOCGFAULT, &pip -> fltset) < 0) | |
3253 | { | |
3254 | print_sys_errmsg (pip -> pathname, errno); | |
3255 | error ("PIOCGFAULT failed"); | |
3256 | } | |
3257 | ||
3258 | printf_filtered ("Current traced hardware fault set:\n\n"); | |
3259 | printf_filtered ("\t%-12s %-8s\n", "Fault", "Trace"); | |
3260 | ||
3261 | for (transp = faults_table; transp -> name != NULL; transp++) | |
3262 | { | |
3263 | QUIT; | |
3264 | printf_filtered ("\t%-12s ", transp -> name); | |
3265 | printf_filtered ("%-8s", prismember (&pip -> fltset, transp -> value) | |
3266 | ? "on" : "off"); | |
3267 | printf_filtered ("\n"); | |
3268 | } | |
3269 | printf_filtered ("\n"); | |
3270 | } | |
3271 | } | |
3272 | ||
3273 | static void | |
3274 | info_proc_mappings (pip, summary) | |
1ab3bf1b | 3275 | struct procinfo *pip; |
cc221e76 | 3276 | int summary; |
a39ad5ce FF |
3277 | { |
3278 | int nmap; | |
3279 | struct prmap *prmaps; | |
3280 | struct prmap *prmap; | |
3281 | ||
cc221e76 | 3282 | if (!summary) |
a39ad5ce | 3283 | { |
cc221e76 | 3284 | printf_filtered ("Mapped address spaces:\n\n"); |
2592eef8 PS |
3285 | #ifdef BFD_HOST_64_BIT |
3286 | printf_filtered (" %18s %18s %10s %10s %7s\n", | |
3287 | #else | |
5c1c5e67 | 3288 | printf_filtered ("\t%10s %10s %10s %10s %7s\n", |
2592eef8 | 3289 | #endif |
cc221e76 FF |
3290 | "Start Addr", |
3291 | " End Addr", | |
3292 | " Size", | |
3293 | " Offset", | |
3294 | "Flags"); | |
3295 | if (ioctl (pip -> fd, PIOCNMAP, &nmap) == 0) | |
a39ad5ce | 3296 | { |
cc221e76 FF |
3297 | prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps)); |
3298 | if (ioctl (pip -> fd, PIOCMAP, prmaps) == 0) | |
a39ad5ce | 3299 | { |
cc221e76 FF |
3300 | for (prmap = prmaps; prmap -> pr_size; ++prmap) |
3301 | { | |
2592eef8 PS |
3302 | #ifdef BFD_HOST_64_BIT |
3303 | printf_filtered (" %#18lx %#18lx %#10x %#10x %7s\n", | |
3304 | #else | |
3305 | printf_filtered ("\t%#10lx %#10lx %#10x %#10x %7s\n", | |
3306 | #endif | |
3307 | (unsigned long)prmap -> pr_vaddr, | |
3308 | (unsigned long)prmap -> pr_vaddr | |
3309 | + prmap -> pr_size - 1, | |
cc221e76 FF |
3310 | prmap -> pr_size, |
3311 | prmap -> pr_off, | |
3312 | mappingflags (prmap -> pr_mflags)); | |
3313 | } | |
a39ad5ce FF |
3314 | } |
3315 | } | |
cc221e76 | 3316 | printf_filtered ("\n"); |
a39ad5ce | 3317 | } |
a39ad5ce FF |
3318 | } |
3319 | ||
3320 | /* | |
3321 | ||
3322 | LOCAL FUNCTION | |
3323 | ||
cc221e76 | 3324 | info_proc -- implement the "info proc" command |
a39ad5ce FF |
3325 | |
3326 | SYNOPSIS | |
3327 | ||
cc221e76 | 3328 | void info_proc (char *args, int from_tty) |
a39ad5ce FF |
3329 | |
3330 | DESCRIPTION | |
3331 | ||
3332 | Implement gdb's "info proc" command by using the /proc interface | |
3333 | to print status information about any currently running process. | |
3334 | ||
3335 | Examples of the use of "info proc" are: | |
3336 | ||
cc221e76 FF |
3337 | info proc (prints summary info for current inferior) |
3338 | info proc 123 (prints summary info for process with pid 123) | |
3339 | info proc mappings (prints address mappings) | |
3340 | info proc times (prints process/children times) | |
3341 | info proc id (prints pid, ppid, gid, sid, etc) | |
3fbdd536 | 3342 | FIXME: i proc id not implemented. |
cc221e76 | 3343 | info proc status (prints general process state info) |
3fbdd536 | 3344 | FIXME: i proc status not implemented. |
cc221e76 FF |
3345 | info proc signals (prints info about signal handling) |
3346 | info proc all (prints all info) | |
a39ad5ce FF |
3347 | |
3348 | */ | |
3349 | ||
3350 | static void | |
cc221e76 | 3351 | info_proc (args, from_tty) |
1ab3bf1b JG |
3352 | char *args; |
3353 | int from_tty; | |
a39ad5ce | 3354 | { |
a39ad5ce | 3355 | int pid; |
a39ad5ce FF |
3356 | struct procinfo *pip; |
3357 | struct cleanup *old_chain; | |
cc221e76 FF |
3358 | char **argv; |
3359 | int argsize; | |
3360 | int summary = 1; | |
3361 | int flags = 0; | |
3362 | int syscalls = 0; | |
3363 | int signals = 0; | |
3364 | int faults = 0; | |
3365 | int mappings = 0; | |
3366 | int times = 0; | |
3367 | int id = 0; | |
3368 | int status = 0; | |
3369 | int all = 0; | |
a39ad5ce FF |
3370 | |
3371 | old_chain = make_cleanup (null_cleanup, 0); | |
3372 | ||
de43d7d0 SG |
3373 | /* Default to using the current inferior if no pid specified. Note |
3374 | that inferior_pid may be 0, hence we set okerr. */ | |
a39ad5ce | 3375 | |
de43d7d0 | 3376 | pip = find_procinfo (inferior_pid, 1); |
a39ad5ce | 3377 | |
a39ad5ce | 3378 | if (args != NULL) |
35f5886e | 3379 | { |
cc221e76 | 3380 | if ((argv = buildargv (args)) == NULL) |
a39ad5ce | 3381 | { |
cc221e76 FF |
3382 | nomem (0); |
3383 | } | |
3384 | make_cleanup (freeargv, (char *) argv); | |
3385 | ||
3386 | while (*argv != NULL) | |
3387 | { | |
3388 | argsize = strlen (*argv); | |
3389 | if (argsize >= 1 && strncmp (*argv, "all", argsize) == 0) | |
3390 | { | |
3391 | summary = 0; | |
3392 | all = 1; | |
3393 | } | |
3394 | else if (argsize >= 2 && strncmp (*argv, "faults", argsize) == 0) | |
3395 | { | |
3396 | summary = 0; | |
3397 | faults = 1; | |
3398 | } | |
3399 | else if (argsize >= 2 && strncmp (*argv, "flags", argsize) == 0) | |
3400 | { | |
3401 | summary = 0; | |
3402 | flags = 1; | |
3403 | } | |
3404 | else if (argsize >= 1 && strncmp (*argv, "id", argsize) == 0) | |
3405 | { | |
3406 | summary = 0; | |
3407 | id = 1; | |
3408 | } | |
3409 | else if (argsize >= 1 && strncmp (*argv, "mappings", argsize) == 0) | |
3410 | { | |
3411 | summary = 0; | |
3412 | mappings = 1; | |
3413 | } | |
3414 | else if (argsize >= 2 && strncmp (*argv, "signals", argsize) == 0) | |
3415 | { | |
3416 | summary = 0; | |
3417 | signals = 1; | |
3418 | } | |
3419 | else if (argsize >= 2 && strncmp (*argv, "status", argsize) == 0) | |
3420 | { | |
3421 | summary = 0; | |
3422 | status = 1; | |
3423 | } | |
3424 | else if (argsize >= 2 && strncmp (*argv, "syscalls", argsize) == 0) | |
3425 | { | |
3426 | summary = 0; | |
3427 | syscalls = 1; | |
3428 | } | |
3429 | else if (argsize >= 1 && strncmp (*argv, "times", argsize) == 0) | |
a39ad5ce | 3430 | { |
cc221e76 FF |
3431 | summary = 0; |
3432 | times = 1; | |
a39ad5ce | 3433 | } |
de43d7d0 | 3434 | else if ((pid = atoi (*argv)) > 0) |
a39ad5ce | 3435 | { |
de43d7d0 SG |
3436 | pip = (struct procinfo *) xmalloc (sizeof (struct procinfo)); |
3437 | memset (pip, 0, sizeof (*pip)); | |
3438 | ||
3439 | pip->pid = pid; | |
ec8ceca3 | 3440 | if (!open_proc_file (pid, pip, O_RDONLY)) |
a39ad5ce FF |
3441 | { |
3442 | perror_with_name (pip -> pathname); | |
3443 | /* NOTREACHED */ | |
3444 | } | |
3445 | make_cleanup (close_proc_file, pip); | |
3446 | } | |
cc221e76 FF |
3447 | else if (**argv != '\000') |
3448 | { | |
3449 | error ("Unrecognized or ambiguous keyword `%s'.", *argv); | |
3450 | } | |
3451 | argv++; | |
a39ad5ce | 3452 | } |
35f5886e | 3453 | } |
a39ad5ce FF |
3454 | |
3455 | /* If we don't have a valid open process at this point, then we have no | |
3456 | inferior or didn't specify a specific pid. */ | |
3457 | ||
de43d7d0 | 3458 | if (!pip) |
35f5886e | 3459 | { |
6fe90fc8 JK |
3460 | error ("\ |
3461 | No process. Start debugging a program or specify an explicit process ID."); | |
35f5886e | 3462 | } |
a39ad5ce | 3463 | if (ioctl (pip -> fd, PIOCSTATUS, &(pip -> prstatus)) < 0) |
35f5886e | 3464 | { |
a39ad5ce FF |
3465 | print_sys_errmsg (pip -> pathname, errno); |
3466 | error ("PIOCSTATUS failed"); | |
35f5886e | 3467 | } |
a39ad5ce | 3468 | |
cc221e76 FF |
3469 | /* Print verbose information of the requested type(s), or just a summary |
3470 | of the information for all types. */ | |
3471 | ||
3472 | printf_filtered ("\nInformation for %s:\n\n", pip -> pathname); | |
3473 | if (summary || all || flags) | |
3474 | { | |
3475 | info_proc_flags (pip, summary); | |
3476 | } | |
3477 | if (summary || all) | |
3478 | { | |
3479 | info_proc_stop (pip, summary); | |
3480 | } | |
3481 | if (summary || all || signals || faults) | |
3482 | { | |
3483 | info_proc_siginfo (pip, summary); | |
3484 | } | |
3485 | if (summary || all || syscalls) | |
3486 | { | |
3487 | info_proc_syscalls (pip, summary); | |
3488 | } | |
3489 | if (summary || all || mappings) | |
3490 | { | |
3491 | info_proc_mappings (pip, summary); | |
3492 | } | |
3493 | if (summary || all || signals) | |
3494 | { | |
3495 | info_proc_signals (pip, summary); | |
3496 | } | |
3497 | if (summary || all || faults) | |
3498 | { | |
3499 | info_proc_faults (pip, summary); | |
3500 | } | |
3501 | printf_filtered ("\n"); | |
a39ad5ce FF |
3502 | |
3503 | /* All done, deal with closing any temporary process info structure, | |
3504 | freeing temporary memory , etc. */ | |
3505 | ||
3506 | do_cleanups (old_chain); | |
3507 | } | |
3508 | ||
de43d7d0 SG |
3509 | /* |
3510 | ||
3511 | LOCAL FUNCTION | |
3512 | ||
eca4a350 | 3513 | procfs_set_sproc_trap -- arrange for child to stop on sproc(). |
de43d7d0 SG |
3514 | |
3515 | SYNOPSIS | |
3516 | ||
eca4a350 | 3517 | void procfs_set_sproc_trap (struct procinfo *) |
de43d7d0 SG |
3518 | |
3519 | DESCRIPTION | |
3520 | ||
3521 | This function sets up a trap on sproc system call exits so that we can | |
eca4a350 | 3522 | detect the arrival of a new thread. We are called with the new thread |
de43d7d0 SG |
3523 | stopped prior to it's first instruction. |
3524 | ||
3525 | Also note that we turn on the inherit-on-fork flag in the child process | |
3526 | so that any grand-children start with all tracing flags set. | |
3527 | */ | |
3528 | ||
952a820e SG |
3529 | #ifdef SYS_sproc |
3530 | ||
de43d7d0 SG |
3531 | static void |
3532 | procfs_set_sproc_trap (pi) | |
3533 | struct procinfo *pi; | |
3534 | { | |
3535 | sysset_t exitset; | |
3536 | ||
3537 | if (ioctl (pi->fd, PIOCGEXIT, &exitset) < 0) | |
3538 | { | |
3539 | print_sys_errmsg (pi->pathname, errno); | |
3540 | error ("PIOCGEXIT failed"); | |
3541 | } | |
3542 | ||
de43d7d0 | 3543 | praddset (&exitset, SYS_sproc); |
de43d7d0 | 3544 | |
eca4a350 SG |
3545 | /* We trap on fork() and vfork() in order to disable debugging in our grand- |
3546 | children and descendant processes. At this time, GDB can only handle | |
3547 | threads (multiple processes, one address space). forks (and execs) result | |
3548 | in the creation of multiple address spaces, which GDB can't handle yet. */ | |
3549 | ||
3550 | praddset (&exitset, SYS_fork); | |
3551 | #ifdef SYS_vfork | |
3552 | praddset (&exitset, SYS_vfork); | |
3553 | #endif | |
3554 | ||
de43d7d0 SG |
3555 | if (ioctl (pi->fd, PIOCSEXIT, &exitset) < 0) |
3556 | { | |
3557 | print_sys_errmsg (pi->pathname, errno); | |
3558 | error ("PIOCSEXIT failed"); | |
3559 | } | |
3560 | ||
3561 | /* Turn on inherit-on-fork flag so that all grand-children of gdb start with | |
3562 | tracing flags set. */ | |
3563 | ||
3564 | #ifdef PIOCSET /* New method */ | |
3565 | { | |
3566 | long pr_flags; | |
3567 | pr_flags = PR_FORK; | |
3568 | ioctl (pi->fd, PIOCSET, &pr_flags); | |
3569 | } | |
3570 | #else | |
3571 | #ifdef PIOCSFORK /* Original method */ | |
3572 | ioctl (pi->fd, PIOCSFORK, NULL); | |
3573 | #endif | |
3574 | #endif | |
3575 | } | |
952a820e | 3576 | #endif /* SYS_sproc */ |
de43d7d0 | 3577 | |
3fbdd536 JG |
3578 | /* Fork an inferior process, and start debugging it with /proc. */ |
3579 | ||
3580 | static void | |
3581 | procfs_create_inferior (exec_file, allargs, env) | |
3582 | char *exec_file; | |
3583 | char *allargs; | |
3584 | char **env; | |
3585 | { | |
08f74b92 JK |
3586 | char *shell_file = getenv ("SHELL"); |
3587 | char *tryname; | |
3588 | if (shell_file != NULL && strchr (shell_file, '/') == NULL) | |
3589 | { | |
3590 | ||
3591 | /* We will be looking down the PATH to find shell_file. If we | |
3592 | just do this the normal way (via execlp, which operates by | |
3593 | attempting an exec for each element of the PATH until it | |
3594 | finds one which succeeds), then there will be an exec for | |
3595 | each failed attempt, each of which will cause a PR_SYSEXIT | |
3596 | stop, and we won't know how to distinguish the PR_SYSEXIT's | |
3597 | for these failed execs with the ones for successful execs | |
3598 | (whether the exec has succeeded is stored at that time in the | |
3599 | carry bit or some such architecture-specific and | |
3600 | non-ABI-specified place). | |
3601 | ||
3602 | So I can't think of anything better than to search the PATH | |
3603 | now. This has several disadvantages: (1) There is a race | |
3604 | condition; if we find a file now and it is deleted before we | |
3605 | exec it, we lose, even if the deletion leaves a valid file | |
3606 | further down in the PATH, (2) there is no way to know exactly | |
3607 | what an executable (in the sense of "capable of being | |
3608 | exec'd") file is. Using access() loses because it may lose | |
3609 | if the caller is the superuser; failing to use it loses if | |
3610 | there are ACLs or some such. */ | |
3611 | ||
3612 | char *p; | |
3613 | char *p1; | |
f93b941b JK |
3614 | /* FIXME-maybe: might want "set path" command so user can change what |
3615 | path is used from within GDB. */ | |
08f74b92 JK |
3616 | char *path = getenv ("PATH"); |
3617 | int len; | |
3618 | struct stat statbuf; | |
3619 | ||
3620 | if (path == NULL) | |
3621 | path = "/bin:/usr/bin"; | |
3622 | ||
3623 | tryname = alloca (strlen (path) + strlen (shell_file) + 2); | |
3624 | for (p = path; p != NULL; p = p1 ? p1 + 1: NULL) | |
3625 | { | |
3626 | p1 = strchr (p, ':'); | |
3627 | if (p1 != NULL) | |
3628 | len = p1 - p; | |
3629 | else | |
3630 | len = strlen (p); | |
3631 | strncpy (tryname, p, len); | |
3632 | tryname[len] = '\0'; | |
3633 | strcat (tryname, "/"); | |
3634 | strcat (tryname, shell_file); | |
3635 | if (access (tryname, X_OK) < 0) | |
3636 | continue; | |
3637 | if (stat (tryname, &statbuf) < 0) | |
3638 | continue; | |
3639 | if (!S_ISREG (statbuf.st_mode)) | |
3640 | /* We certainly need to reject directories. I'm not quite | |
3641 | as sure about FIFOs, sockets, etc., but I kind of doubt | |
3642 | that people want to exec() these things. */ | |
3643 | continue; | |
3644 | break; | |
3645 | } | |
3646 | if (p == NULL) | |
3647 | /* Not found. This must be an error rather than merely passing | |
3648 | the file to execlp(), because execlp() would try all the | |
3649 | exec()s, causing GDB to get confused. */ | |
3650 | error ("Can't find shell %s in PATH", shell_file); | |
3651 | ||
3652 | shell_file = tryname; | |
3653 | } | |
3654 | ||
3fbdd536 | 3655 | fork_inferior (exec_file, allargs, env, |
08f74b92 JK |
3656 | proc_set_exec_trap, procfs_init_inferior, shell_file); |
3657 | ||
3fbdd536 JG |
3658 | /* We are at the first instruction we care about. */ |
3659 | /* Pedal to the metal... */ | |
de43d7d0 SG |
3660 | |
3661 | /* Setup traps on exit from sproc() */ | |
3662 | ||
952a820e SG |
3663 | #ifdef SYS_sproc |
3664 | procfs_set_sproc_trap (current_procinfo); | |
3665 | #endif | |
de43d7d0 | 3666 | |
67ac9759 | 3667 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_0, 0); |
3fbdd536 JG |
3668 | } |
3669 | ||
3670 | /* Clean up after the inferior dies. */ | |
3671 | ||
3672 | static void | |
3673 | procfs_mourn_inferior () | |
3674 | { | |
fb63d460 | 3675 | struct procinfo *pi; |
cd4104e0 | 3676 | struct procinfo *next_pi; |
fb63d460 | 3677 | |
cd4104e0 TL |
3678 | for (pi = procinfo_list; pi; pi = next_pi) |
3679 | { | |
3680 | next_pi = pi->next; | |
3681 | unconditionally_kill_inferior (pi); | |
3682 | } | |
fb63d460 | 3683 | |
3fbdd536 JG |
3684 | unpush_target (&procfs_ops); |
3685 | generic_mourn_inferior (); | |
3686 | } | |
3687 | ||
cd4104e0 | 3688 | |
3fbdd536 JG |
3689 | /* Mark our target-struct as eligible for stray "run" and "attach" commands. */ |
3690 | static int | |
3691 | procfs_can_run () | |
3692 | { | |
3693 | return(1); | |
3694 | } | |
6bc194d2 | 3695 | #ifdef TARGET_CAN_USE_HARDWARE_WATCHPOINT |
999dd04b JL |
3696 | \f |
3697 | /* Insert a watchpoint */ | |
3698 | int | |
3699 | procfs_set_watchpoint(pid, addr, len, rw) | |
3700 | int pid; | |
3701 | CORE_ADDR addr; | |
3702 | int len; | |
3703 | int rw; | |
3704 | { | |
3705 | struct procinfo *pi; | |
3706 | prwatch_t wpt; | |
3707 | ||
3708 | pi = find_procinfo (pid == -1 ? inferior_pid : pid, 0); | |
3709 | wpt.pr_vaddr = (caddr_t)addr; | |
3710 | wpt.pr_size = len; | |
3711 | wpt.pr_wflags = ((rw & 1) ? MA_READ : 0) | ((rw & 2) ? MA_WRITE : 0); | |
3712 | if (ioctl (pi->fd, PIOCSWATCH, &wpt) < 0) | |
3713 | { | |
3714 | if (errno == E2BIG) | |
3715 | return -1; | |
3716 | /* Currently it sometimes happens that the same watchpoint gets | |
3717 | deleted twice - don't die in this case (FIXME please) */ | |
3718 | if (errno == ESRCH && len == 0) | |
3719 | return 0; | |
3720 | print_sys_errmsg (pi->pathname, errno); | |
3721 | error ("PIOCSWATCH failed"); | |
3722 | } | |
3723 | return 0; | |
3724 | } | |
3725 | ||
3726 | int | |
3727 | procfs_stopped_by_watchpoint(pid) | |
3728 | int pid; | |
3729 | { | |
3730 | struct procinfo *pi; | |
3731 | short what; | |
3732 | short why; | |
3733 | ||
3734 | pi = find_procinfo (pid == -1 ? inferior_pid : pid, 0); | |
3735 | if (pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP)) | |
3736 | { | |
3737 | why = pi->prstatus.pr_why; | |
3738 | what = pi->prstatus.pr_what; | |
3739 | if (why == PR_FAULTED | |
6bc194d2 JL |
3740 | #if defined (FLTWATCH) && defined (FLTKWATCH) |
3741 | && (what == FLTWATCH) || (what == FLTKWATCH) | |
3742 | #else | |
3743 | #ifdef FLTWATCH | |
3744 | && (what == FLTWATCH) | |
3745 | #endif | |
3746 | #ifdef FLTKWATCH | |
3747 | && (what == FLTKWATCH) | |
3748 | #endif | |
72b8ca51 | 3749 | #endif |
6bc194d2 | 3750 | ) |
999dd04b JL |
3751 | return what; |
3752 | } | |
3753 | return 0; | |
3754 | } | |
6bc194d2 | 3755 | #endif |
999dd04b | 3756 | |
78b459a7 SG |
3757 | /* Send a SIGINT to the process group. This acts just like the user typed a |
3758 | ^C on the controlling terminal. | |
3759 | ||
3760 | XXX - This may not be correct for all systems. Some may want to use | |
3761 | killpg() instead of kill (-pgrp). */ | |
3762 | ||
3763 | void | |
2592eef8 | 3764 | procfs_stop () |
78b459a7 SG |
3765 | { |
3766 | extern pid_t inferior_process_group; | |
3767 | ||
3768 | kill (-inferior_process_group, SIGINT); | |
3769 | } | |
3770 | ||
3fbdd536 JG |
3771 | \f |
3772 | struct target_ops procfs_ops = { | |
3773 | "procfs", /* to_shortname */ | |
3774 | "Unix /proc child process", /* to_longname */ | |
3775 | "Unix /proc child process (started by the \"run\" command).", /* to_doc */ | |
3776 | procfs_open, /* to_open */ | |
3777 | 0, /* to_close */ | |
3778 | procfs_attach, /* to_attach */ | |
3779 | procfs_detach, /* to_detach */ | |
3780 | procfs_resume, /* to_resume */ | |
3781 | procfs_wait, /* to_wait */ | |
3782 | procfs_fetch_registers, /* to_fetch_registers */ | |
3783 | procfs_store_registers, /* to_store_registers */ | |
3784 | procfs_prepare_to_store, /* to_prepare_to_store */ | |
3785 | procfs_xfer_memory, /* to_xfer_memory */ | |
3786 | procfs_files_info, /* to_files_info */ | |
3787 | memory_insert_breakpoint, /* to_insert_breakpoint */ | |
3788 | memory_remove_breakpoint, /* to_remove_breakpoint */ | |
3789 | terminal_init_inferior, /* to_terminal_init */ | |
3790 | terminal_inferior, /* to_terminal_inferior */ | |
3791 | terminal_ours_for_output, /* to_terminal_ours_for_output */ | |
3792 | terminal_ours, /* to_terminal_ours */ | |
3793 | child_terminal_info, /* to_terminal_info */ | |
3794 | procfs_kill_inferior, /* to_kill */ | |
3795 | 0, /* to_load */ | |
3796 | 0, /* to_lookup_symbol */ | |
3797 | procfs_create_inferior, /* to_create_inferior */ | |
3798 | procfs_mourn_inferior, /* to_mourn_inferior */ | |
3799 | procfs_can_run, /* to_can_run */ | |
3950a34e | 3800 | procfs_notice_signals, /* to_notice_signals */ |
2592eef8 | 3801 | procfs_stop, /* to_stop */ |
3fbdd536 JG |
3802 | process_stratum, /* to_stratum */ |
3803 | 0, /* to_next */ | |
3804 | 1, /* to_has_all_memory */ | |
3805 | 1, /* to_has_memory */ | |
3806 | 1, /* to_has_stack */ | |
3807 | 1, /* to_has_registers */ | |
3808 | 1, /* to_has_execution */ | |
3809 | 0, /* sections */ | |
3810 | 0, /* sections_end */ | |
3811 | OPS_MAGIC /* to_magic */ | |
3812 | }; | |
3813 | ||
3fbdd536 JG |
3814 | void |
3815 | _initialize_procfs () | |
3816 | { | |
2592eef8 PS |
3817 | #ifdef HAVE_OPTIONAL_PROC_FS |
3818 | char procname[32]; | |
3819 | int fd; | |
3820 | ||
3821 | /* If we have an optional /proc filesystem (e.g. under OSF/1), | |
3822 | don't add procfs support if we cannot access the running | |
3823 | GDB via /proc. */ | |
3824 | sprintf (procname, PROC_NAME_FMT, getpid ()); | |
3825 | if ((fd = open (procname, O_RDONLY)) < 0) | |
3826 | return; | |
3827 | close (fd); | |
3828 | #endif | |
3829 | ||
3fbdd536 JG |
3830 | add_target (&procfs_ops); |
3831 | ||
3832 | add_info ("proc", info_proc, | |
cc221e76 FF |
3833 | "Show process status information using /proc entry.\n\ |
3834 | Specify process id or use current inferior by default.\n\ | |
3835 | Specify keywords for detailed information; default is summary.\n\ | |
3836 | Keywords are: `all', `faults', `flags', `id', `mappings', `signals',\n\ | |
3837 | `status', `syscalls', and `times'.\n\ | |
3fbdd536 | 3838 | Unambiguous abbreviations may be used."); |
a39ad5ce | 3839 | |
cc221e76 | 3840 | init_syscall_table (); |
35f5886e | 3841 | } |