Commit | Line | Data |
---|---|---|
35f5886e | 1 | /* Machine independent support for SVR4 /proc (process file system) for GDB. |
ec8ceca3 | 2 | Copyright 1991, 1992 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 | |
407a8389 | 37 | #include <time.h> |
35f5886e FF |
38 | #include <sys/procfs.h> |
39 | #include <fcntl.h> | |
40 | #include <errno.h> | |
51b57ded | 41 | #include <string.h> |
35f5886e | 42 | |
35f5886e FF |
43 | #include "inferior.h" |
44 | #include "target.h" | |
51b57ded | 45 | #include "command.h" |
3fbdd536 | 46 | #include "gdbcore.h" |
cc221e76 FF |
47 | |
48 | #define MAX_SYSCALLS 256 /* Maximum number of syscalls for table */ | |
35f5886e FF |
49 | |
50 | #ifndef PROC_NAME_FMT | |
6c316cfd | 51 | #define PROC_NAME_FMT "/proc/%05d" |
35f5886e FF |
52 | #endif |
53 | ||
3fbdd536 JG |
54 | extern struct target_ops procfs_ops; /* Forward declaration */ |
55 | ||
35f5886e FF |
56 | #if 1 /* FIXME: Gross and ugly hack to resolve coredep.c global */ |
57 | CORE_ADDR kernel_u_addr; | |
58 | #endif | |
59 | ||
cc221e76 FF |
60 | #ifdef BROKEN_SIGINFO_H /* Workaround broken SGS <sys/siginfo.h> */ |
61 | #undef si_pid | |
62 | #define si_pid _data._proc.pid | |
63 | #undef si_uid | |
64 | #define si_uid _data._proc._pdata._kill.uid | |
65 | #endif /* BROKEN_SIGINFO_H */ | |
66 | ||
35f5886e FF |
67 | /* All access to the inferior, either one started by gdb or one that has |
68 | been attached to, is controlled by an instance of a procinfo structure, | |
69 | defined below. Since gdb currently only handles one inferior at a time, | |
a39ad5ce FF |
70 | the procinfo structure for the inferior is statically allocated and |
71 | only one exists at any given time. There is a separate procinfo | |
72 | structure for use by the "info proc" command, so that we can print | |
73 | useful information about any random process without interfering with | |
74 | the inferior's procinfo information. */ | |
35f5886e FF |
75 | |
76 | struct procinfo { | |
77 | int valid; /* Nonzero if pid, fd, & pathname are valid */ | |
78 | int pid; /* Process ID of inferior */ | |
79 | int fd; /* File descriptor for /proc entry */ | |
80 | char *pathname; /* Pathname to /proc entry */ | |
81 | int was_stopped; /* Nonzero if was stopped prior to attach */ | |
d65eee73 | 82 | int nopass_next_sigstop; /* Don't pass a sigstop on next resume */ |
35f5886e FF |
83 | prrun_t prrun; /* Control state when it is run */ |
84 | prstatus_t prstatus; /* Current process status info */ | |
85 | gregset_t gregset; /* General register set */ | |
86 | fpregset_t fpregset; /* Floating point register set */ | |
87 | fltset_t fltset; /* Current traced hardware fault set */ | |
88 | sigset_t trace; /* Current traced signal set */ | |
89 | sysset_t exitset; /* Current traced system call exit set */ | |
90 | sysset_t entryset; /* Current traced system call entry set */ | |
cc221e76 FF |
91 | fltset_t saved_fltset; /* Saved traced hardware fault set */ |
92 | sigset_t saved_trace; /* Saved traced signal set */ | |
93 | sigset_t saved_sighold; /* Saved held signal set */ | |
94 | sysset_t saved_exitset; /* Saved traced system call exit set */ | |
95 | sysset_t saved_entryset; /* Saved traced system call entry set */ | |
a39ad5ce FF |
96 | }; |
97 | ||
98 | static struct procinfo pi; /* Inferior's process information */ | |
35f5886e | 99 | |
cc221e76 FF |
100 | /* Much of the information used in the /proc interface, particularly for |
101 | printing status information, is kept as tables of structures of the | |
102 | following form. These tables can be used to map numeric values to | |
103 | their symbolic names and to a string that describes their specific use. */ | |
104 | ||
105 | struct trans { | |
106 | int value; /* The numeric value */ | |
107 | char *name; /* The equivalent symbolic value */ | |
108 | char *desc; /* Short description of value */ | |
109 | }; | |
110 | ||
111 | /* Translate bits in the pr_flags member of the prstatus structure, into the | |
112 | names and desc information. */ | |
113 | ||
114 | static struct trans pr_flag_table[] = | |
115 | { | |
116 | #if defined (PR_STOPPED) | |
117 | PR_STOPPED, "PR_STOPPED", "Process is stopped", | |
118 | #endif | |
119 | #if defined (PR_ISTOP) | |
120 | PR_ISTOP, "PR_ISTOP", "Stopped on an event of interest", | |
121 | #endif | |
122 | #if defined (PR_DSTOP) | |
123 | PR_DSTOP, "PR_DSTOP", "A stop directive is in effect", | |
124 | #endif | |
125 | #if defined (PR_ASLEEP) | |
126 | PR_ASLEEP, "PR_ASLEEP", "Sleeping in an interruptible system call", | |
127 | #endif | |
128 | #if defined (PR_FORK) | |
129 | PR_FORK, "PR_FORK", "Inherit-on-fork is in effect", | |
130 | #endif | |
131 | #if defined (PR_RLC) | |
132 | PR_RLC, "PR_RLC", "Run-on-last-close is in effect", | |
133 | #endif | |
134 | #if defined (PR_PTRACE) | |
135 | PR_PTRACE, "PR_PTRACE", "Process is being controlled by ptrace", | |
136 | #endif | |
137 | #if defined (PR_PCINVAL) | |
138 | PR_PCINVAL, "PR_PCINVAL", "PC refers to an invalid virtual address", | |
139 | #endif | |
140 | #if defined (PR_ISSYS) | |
141 | PR_ISSYS, "PR_ISSYS", "Is a system process", | |
5c1c5e67 FF |
142 | #endif |
143 | #if defined (PR_STEP) | |
144 | PR_STEP, "PR_STEP", "Process has single step pending", | |
145 | #endif | |
146 | #if defined (PR_KLC) | |
147 | PR_KLC, "PR_KLC", "Kill-on-last-close is in effect", | |
148 | #endif | |
149 | #if defined (PR_ASYNC) | |
150 | PR_ASYNC, "PR_ASYNC", "Asynchronous stop is in effect", | |
151 | #endif | |
152 | #if defined (PR_PCOMPAT) | |
153 | PR_PCOMPAT, "PR_PCOMPAT", "Ptrace compatibility mode in effect", | |
cc221e76 FF |
154 | #endif |
155 | 0, NULL, NULL | |
156 | }; | |
157 | ||
158 | /* Translate values in the pr_why field of the prstatus struct. */ | |
159 | ||
160 | static struct trans pr_why_table[] = | |
161 | { | |
162 | #if defined (PR_REQUESTED) | |
163 | PR_REQUESTED, "PR_REQUESTED", "Directed to stop via PIOCSTOP/PIOCWSTOP", | |
164 | #endif | |
165 | #if defined (PR_SIGNALLED) | |
166 | PR_SIGNALLED, "PR_SIGNALLED", "Receipt of a traced signal", | |
167 | #endif | |
168 | #if defined (PR_FAULTED) | |
169 | PR_FAULTED, "PR_FAULTED", "Incurred a traced hardware fault", | |
170 | #endif | |
171 | #if defined (PR_SYSENTRY) | |
172 | PR_SYSENTRY, "PR_SYSENTRY", "Entry to a traced system call", | |
173 | #endif | |
174 | #if defined (PR_SYSEXIT) | |
175 | PR_SYSEXIT, "PR_SYSEXIT", "Exit from a traced system call", | |
176 | #endif | |
177 | #if defined (PR_JOBCONTROL) | |
178 | PR_JOBCONTROL, "PR_JOBCONTROL", "Default job control stop signal action", | |
5c1c5e67 FF |
179 | #endif |
180 | #if defined (PR_SUSPENDED) | |
181 | PR_SUSPENDED, "PR_SUSPENDED", "Process suspended", | |
cc221e76 FF |
182 | #endif |
183 | 0, NULL, NULL | |
184 | }; | |
185 | ||
186 | /* Hardware fault translation table. */ | |
187 | ||
188 | static struct trans faults_table[] = | |
189 | { | |
190 | #if defined (FLTILL) | |
191 | FLTILL, "FLTILL", "Illegal instruction", | |
192 | #endif | |
193 | #if defined (FLTPRIV) | |
194 | FLTPRIV, "FLTPRIV", "Privileged instruction", | |
195 | #endif | |
196 | #if defined (FLTBPT) | |
197 | FLTBPT, "FLTBPT", "Breakpoint trap", | |
198 | #endif | |
199 | #if defined (FLTTRACE) | |
200 | FLTTRACE, "FLTTRACE", "Trace trap", | |
201 | #endif | |
202 | #if defined (FLTACCESS) | |
203 | FLTACCESS, "FLTACCESS", "Memory access fault", | |
204 | #endif | |
205 | #if defined (FLTBOUNDS) | |
206 | FLTBOUNDS, "FLTBOUNDS", "Memory bounds violation", | |
207 | #endif | |
208 | #if defined (FLTIOVF) | |
209 | FLTIOVF, "FLTIOVF", "Integer overflow", | |
210 | #endif | |
211 | #if defined (FLTIZDIV) | |
212 | FLTIZDIV, "FLTIZDIV", "Integer zero divide", | |
213 | #endif | |
214 | #if defined (FLTFPE) | |
215 | FLTFPE, "FLTFPE", "Floating-point exception", | |
216 | #endif | |
217 | #if defined (FLTSTACK) | |
218 | FLTSTACK, "FLTSTACK", "Unrecoverable stack fault", | |
219 | #endif | |
220 | #if defined (FLTPAGE) | |
221 | FLTPAGE, "FLTPAGE", "Recoverable page fault", | |
222 | #endif | |
223 | 0, NULL, NULL | |
224 | }; | |
225 | ||
226 | /* Translation table for signal generation information. See UNIX System | |
227 | V Release 4 Programmer's Reference Manual, siginfo(5). */ | |
228 | ||
229 | static struct sigcode { | |
230 | int signo; | |
231 | int code; | |
232 | char *codename; | |
233 | char *desc; | |
234 | } siginfo_table[] = { | |
235 | #if defined (SIGILL) && defined (ILL_ILLOPC) | |
236 | SIGILL, ILL_ILLOPC, "ILL_ILLOPC", "Illegal opcode", | |
237 | #endif | |
238 | #if defined (SIGILL) && defined (ILL_ILLOPN) | |
239 | SIGILL, ILL_ILLOPN, "ILL_ILLOPN", "Illegal operand", | |
240 | #endif | |
241 | #if defined (SIGILL) && defined (ILL_ILLADR) | |
242 | SIGILL, ILL_ILLADR, "ILL_ILLADR", "Illegal addressing mode", | |
243 | #endif | |
244 | #if defined (SIGILL) && defined (ILL_ILLTRP) | |
245 | SIGILL, ILL_ILLTRP, "ILL_ILLTRP", "Illegal trap", | |
246 | #endif | |
247 | #if defined (SIGILL) && defined (ILL_PRVOPC) | |
248 | SIGILL, ILL_PRVOPC, "ILL_PRVOPC", "Privileged opcode", | |
249 | #endif | |
250 | #if defined (SIGILL) && defined (ILL_PRVREG) | |
251 | SIGILL, ILL_PRVREG, "ILL_PRVREG", "Privileged register", | |
252 | #endif | |
253 | #if defined (SIGILL) && defined (ILL_COPROC) | |
254 | SIGILL, ILL_COPROC, "ILL_COPROC", "Coprocessor error", | |
255 | #endif | |
256 | #if defined (SIGILL) && defined (ILL_BADSTK) | |
257 | SIGILL, ILL_BADSTK, "ILL_BADSTK", "Internal stack error", | |
258 | #endif | |
259 | #if defined (SIGFPE) && defined (FPE_INTDIV) | |
260 | SIGFPE, FPE_INTDIV, "FPE_INTDIV", "Integer divide by zero", | |
261 | #endif | |
262 | #if defined (SIGFPE) && defined (FPE_INTOVF) | |
263 | SIGFPE, FPE_INTOVF, "FPE_INTOVF", "Integer overflow", | |
264 | #endif | |
265 | #if defined (SIGFPE) && defined (FPE_FLTDIV) | |
266 | SIGFPE, FPE_FLTDIV, "FPE_FLTDIV", "Floating point divide by zero", | |
267 | #endif | |
268 | #if defined (SIGFPE) && defined (FPE_FLTOVF) | |
269 | SIGFPE, FPE_FLTOVF, "FPE_FLTOVF", "Floating point overflow", | |
270 | #endif | |
271 | #if defined (SIGFPE) && defined (FPE_FLTUND) | |
272 | SIGFPE, FPE_FLTUND, "FPE_FLTUND", "Floating point underflow", | |
273 | #endif | |
274 | #if defined (SIGFPE) && defined (FPE_FLTRES) | |
275 | SIGFPE, FPE_FLTRES, "FPE_FLTRES", "Floating point inexact result", | |
276 | #endif | |
277 | #if defined (SIGFPE) && defined (FPE_FLTINV) | |
278 | SIGFPE, FPE_FLTINV, "FPE_FLTINV", "Invalid floating point operation", | |
279 | #endif | |
280 | #if defined (SIGFPE) && defined (FPE_FLTSUB) | |
281 | SIGFPE, FPE_FLTSUB, "FPE_FLTSUB", "Subscript out of range", | |
282 | #endif | |
283 | #if defined (SIGSEGV) && defined (SEGV_MAPERR) | |
284 | SIGSEGV, SEGV_MAPERR, "SEGV_MAPERR", "Address not mapped to object", | |
285 | #endif | |
286 | #if defined (SIGSEGV) && defined (SEGV_ACCERR) | |
287 | SIGSEGV, SEGV_ACCERR, "SEGV_ACCERR", "Invalid permissions for object", | |
288 | #endif | |
289 | #if defined (SIGBUS) && defined (BUS_ADRALN) | |
290 | SIGBUS, BUS_ADRALN, "BUS_ADRALN", "Invalid address alignment", | |
291 | #endif | |
292 | #if defined (SIGBUS) && defined (BUS_ADRERR) | |
293 | SIGBUS, BUS_ADRERR, "BUS_ADRERR", "Non-existent physical address", | |
294 | #endif | |
295 | #if defined (SIGBUS) && defined (BUS_OBJERR) | |
296 | SIGBUS, BUS_OBJERR, "BUS_OBJERR", "Object specific hardware error", | |
297 | #endif | |
298 | #if defined (SIGTRAP) && defined (TRAP_BRKPT) | |
299 | SIGTRAP, TRAP_BRKPT, "TRAP_BRKPT", "Process breakpoint", | |
300 | #endif | |
301 | #if defined (SIGTRAP) && defined (TRAP_TRACE) | |
302 | SIGTRAP, TRAP_TRACE, "TRAP_TRACE", "Process trace trap", | |
303 | #endif | |
304 | #if defined (SIGCLD) && defined (CLD_EXITED) | |
305 | SIGCLD, CLD_EXITED, "CLD_EXITED", "Child has exited", | |
306 | #endif | |
307 | #if defined (SIGCLD) && defined (CLD_KILLED) | |
308 | SIGCLD, CLD_KILLED, "CLD_KILLED", "Child was killed", | |
309 | #endif | |
310 | #if defined (SIGCLD) && defined (CLD_DUMPED) | |
311 | SIGCLD, CLD_DUMPED, "CLD_DUMPED", "Child has terminated abnormally", | |
312 | #endif | |
313 | #if defined (SIGCLD) && defined (CLD_TRAPPED) | |
314 | SIGCLD, CLD_TRAPPED, "CLD_TRAPPED", "Traced child has trapped", | |
315 | #endif | |
316 | #if defined (SIGCLD) && defined (CLD_STOPPED) | |
317 | SIGCLD, CLD_STOPPED, "CLD_STOPPED", "Child has stopped", | |
318 | #endif | |
319 | #if defined (SIGCLD) && defined (CLD_CONTINUED) | |
320 | SIGCLD, CLD_CONTINUED, "CLD_CONTINUED", "Stopped child had continued", | |
321 | #endif | |
322 | #if defined (SIGPOLL) && defined (POLL_IN) | |
323 | SIGPOLL, POLL_IN, "POLL_IN", "Input input available", | |
324 | #endif | |
325 | #if defined (SIGPOLL) && defined (POLL_OUT) | |
326 | SIGPOLL, POLL_OUT, "POLL_OUT", "Output buffers available", | |
327 | #endif | |
328 | #if defined (SIGPOLL) && defined (POLL_MSG) | |
329 | SIGPOLL, POLL_MSG, "POLL_MSG", "Input message available", | |
330 | #endif | |
331 | #if defined (SIGPOLL) && defined (POLL_ERR) | |
332 | SIGPOLL, POLL_ERR, "POLL_ERR", "I/O error", | |
333 | #endif | |
334 | #if defined (SIGPOLL) && defined (POLL_PRI) | |
335 | SIGPOLL, POLL_PRI, "POLL_PRI", "High priority input available", | |
336 | #endif | |
337 | #if defined (SIGPOLL) && defined (POLL_HUP) | |
338 | SIGPOLL, POLL_HUP, "POLL_HUP", "Device disconnected", | |
339 | #endif | |
340 | 0, 0, NULL, NULL | |
341 | }; | |
342 | ||
cc221e76 FF |
343 | static char *syscall_table[MAX_SYSCALLS]; |
344 | ||
1ab3bf1b JG |
345 | /* Prototypes for local functions */ |
346 | ||
6b801388 FF |
347 | static void |
348 | set_proc_siginfo PARAMS ((struct procinfo *, int)); | |
349 | ||
cc221e76 FF |
350 | static void |
351 | init_syscall_table PARAMS ((void)); | |
352 | ||
353 | static char * | |
354 | syscallname PARAMS ((int)); | |
355 | ||
356 | static char * | |
357 | signalname PARAMS ((int)); | |
358 | ||
4ace50a5 FF |
359 | static char * |
360 | errnoname PARAMS ((int)); | |
361 | ||
1ab3bf1b JG |
362 | static int |
363 | proc_address_to_fd PARAMS ((CORE_ADDR, int)); | |
364 | ||
365 | static int | |
ec8ceca3 | 366 | open_proc_file PARAMS ((int, struct procinfo *, int)); |
1ab3bf1b JG |
367 | |
368 | static void | |
369 | close_proc_file PARAMS ((struct procinfo *)); | |
370 | ||
371 | static void | |
372 | unconditionally_kill_inferior PARAMS ((void)); | |
373 | ||
374 | static void | |
375 | proc_init_failed PARAMS ((char *)); | |
376 | ||
377 | static void | |
cc221e76 FF |
378 | info_proc PARAMS ((char *, int)); |
379 | ||
380 | static void | |
381 | info_proc_flags PARAMS ((struct procinfo *, int)); | |
382 | ||
383 | static void | |
384 | info_proc_stop PARAMS ((struct procinfo *, int)); | |
1ab3bf1b JG |
385 | |
386 | static void | |
cc221e76 FF |
387 | info_proc_siginfo PARAMS ((struct procinfo *, int)); |
388 | ||
389 | static void | |
390 | info_proc_syscalls PARAMS ((struct procinfo *, int)); | |
391 | ||
392 | static void | |
393 | info_proc_mappings PARAMS ((struct procinfo *, int)); | |
394 | ||
395 | static void | |
396 | info_proc_signals PARAMS ((struct procinfo *, int)); | |
397 | ||
398 | static void | |
399 | info_proc_faults PARAMS ((struct procinfo *, int)); | |
1ab3bf1b JG |
400 | |
401 | static char * | |
402 | mappingflags PARAMS ((long)); | |
403 | ||
cc221e76 FF |
404 | static char * |
405 | lookupname PARAMS ((struct trans *, unsigned int, char *)); | |
406 | ||
407 | static char * | |
408 | lookupdesc PARAMS ((struct trans *, unsigned int)); | |
409 | ||
3fbdd536 JG |
410 | static int |
411 | do_attach PARAMS ((int pid)); | |
412 | ||
413 | static void | |
414 | do_detach PARAMS ((int siggnal)); | |
415 | ||
416 | static void | |
417 | procfs_create_inferior PARAMS ((char *, char *, char **)); | |
418 | ||
1ab3bf1b JG |
419 | /* External function prototypes that can't be easily included in any |
420 | header file because the args are typedefs in system include files. */ | |
421 | ||
422 | extern void | |
423 | supply_gregset PARAMS ((gregset_t *)); | |
424 | ||
425 | extern void | |
426 | fill_gregset PARAMS ((gregset_t *, int)); | |
427 | ||
428 | extern void | |
429 | supply_fpregset PARAMS ((fpregset_t *)); | |
430 | ||
431 | extern void | |
432 | fill_fpregset PARAMS ((fpregset_t *, int)); | |
35f5886e | 433 | |
cc221e76 FF |
434 | /* |
435 | ||
436 | LOCAL FUNCTION | |
437 | ||
438 | lookupdesc -- translate a value to a summary desc string | |
439 | ||
440 | SYNOPSIS | |
441 | ||
442 | static char *lookupdesc (struct trans *transp, unsigned int val); | |
443 | ||
444 | DESCRIPTION | |
445 | ||
446 | Given a pointer to a translation table and a value to be translated, | |
447 | lookup the desc string and return it. | |
448 | */ | |
449 | ||
450 | static char * | |
451 | lookupdesc (transp, val) | |
452 | struct trans *transp; | |
453 | unsigned int val; | |
454 | { | |
455 | char *desc; | |
456 | ||
457 | for (desc = NULL; transp -> name != NULL; transp++) | |
458 | { | |
459 | if (transp -> value == val) | |
460 | { | |
461 | desc = transp -> desc; | |
462 | break; | |
463 | } | |
464 | } | |
465 | ||
466 | /* Didn't find a translation for the specified value, set a default one. */ | |
467 | ||
468 | if (desc == NULL) | |
469 | { | |
470 | desc = "Unknown"; | |
471 | } | |
472 | return (desc); | |
473 | } | |
474 | ||
475 | /* | |
476 | ||
477 | LOCAL FUNCTION | |
478 | ||
479 | lookupname -- translate a value to symbolic name | |
480 | ||
481 | SYNOPSIS | |
482 | ||
483 | static char *lookupname (struct trans *transp, unsigned int val, | |
484 | char *prefix); | |
485 | ||
486 | DESCRIPTION | |
487 | ||
488 | Given a pointer to a translation table, a value to be translated, | |
489 | and a default prefix to return if the value can't be translated, | |
490 | match the value with one of the translation table entries and | |
491 | return a pointer to the symbolic name. | |
492 | ||
493 | If no match is found it just returns the value as a printable string, | |
494 | with the given prefix. The previous such value, if any, is freed | |
495 | at this time. | |
496 | */ | |
497 | ||
498 | static char * | |
499 | lookupname (transp, val, prefix) | |
500 | struct trans *transp; | |
501 | unsigned int val; | |
502 | char *prefix; | |
503 | { | |
504 | static char *locbuf; | |
505 | char *name; | |
506 | ||
507 | for (name = NULL; transp -> name != NULL; transp++) | |
508 | { | |
509 | if (transp -> value == val) | |
510 | { | |
511 | name = transp -> name; | |
512 | break; | |
513 | } | |
514 | } | |
515 | ||
516 | /* Didn't find a translation for the specified value, build a default | |
517 | one using the specified prefix and return it. The lifetime of | |
518 | the value is only until the next one is needed. */ | |
519 | ||
520 | if (name == NULL) | |
521 | { | |
522 | if (locbuf != NULL) | |
523 | { | |
524 | free (locbuf); | |
525 | } | |
526 | locbuf = xmalloc (strlen (prefix) + 16); | |
4ed3a9ea | 527 | sprintf (locbuf, "%s %u", prefix, val); |
cc221e76 FF |
528 | name = locbuf; |
529 | } | |
530 | return (name); | |
531 | } | |
532 | ||
533 | static char * | |
534 | sigcodename (sip) | |
535 | siginfo_t *sip; | |
536 | { | |
537 | struct sigcode *scp; | |
538 | char *name = NULL; | |
539 | static char locbuf[32]; | |
540 | ||
541 | for (scp = siginfo_table; scp -> codename != NULL; scp++) | |
542 | { | |
543 | if ((scp -> signo == sip -> si_signo) && | |
544 | (scp -> code == sip -> si_code)) | |
545 | { | |
546 | name = scp -> codename; | |
547 | break; | |
548 | } | |
549 | } | |
550 | if (name == NULL) | |
551 | { | |
4ed3a9ea | 552 | sprintf (locbuf, "sigcode %u", sip -> si_signo); |
cc221e76 FF |
553 | name = locbuf; |
554 | } | |
555 | return (name); | |
556 | } | |
557 | ||
3fbdd536 JG |
558 | static char * |
559 | sigcodedesc (sip) | |
cc221e76 FF |
560 | siginfo_t *sip; |
561 | { | |
562 | struct sigcode *scp; | |
563 | char *desc = NULL; | |
564 | ||
565 | for (scp = siginfo_table; scp -> codename != NULL; scp++) | |
566 | { | |
567 | if ((scp -> signo == sip -> si_signo) && | |
568 | (scp -> code == sip -> si_code)) | |
569 | { | |
570 | desc = scp -> desc; | |
571 | break; | |
572 | } | |
573 | } | |
574 | if (desc == NULL) | |
575 | { | |
576 | desc = "Unrecognized signal or trap use"; | |
577 | } | |
578 | return (desc); | |
579 | } | |
580 | ||
581 | /* | |
582 | ||
583 | LOCAL FUNCTION | |
584 | ||
585 | syscallname - translate a system call number into a system call name | |
586 | ||
587 | SYNOPSIS | |
588 | ||
589 | char *syscallname (int syscallnum) | |
590 | ||
591 | DESCRIPTION | |
592 | ||
593 | Given a system call number, translate it into the printable name | |
594 | of a system call, or into "syscall <num>" if it is an unknown | |
595 | number. | |
596 | */ | |
597 | ||
598 | static char * | |
599 | syscallname (syscallnum) | |
600 | int syscallnum; | |
601 | { | |
602 | static char locbuf[32]; | |
603 | char *rtnval; | |
604 | ||
605 | if (syscallnum >= 0 && syscallnum < MAX_SYSCALLS) | |
606 | { | |
607 | rtnval = syscall_table[syscallnum]; | |
608 | } | |
609 | else | |
610 | { | |
4ed3a9ea | 611 | sprintf (locbuf, "syscall %u", syscallnum); |
cc221e76 FF |
612 | rtnval = locbuf; |
613 | } | |
614 | return (rtnval); | |
615 | } | |
616 | ||
617 | /* | |
618 | ||
619 | LOCAL FUNCTION | |
620 | ||
621 | init_syscall_table - initialize syscall translation table | |
622 | ||
623 | SYNOPSIS | |
624 | ||
625 | void init_syscall_table (void) | |
626 | ||
627 | DESCRIPTION | |
628 | ||
629 | Dynamically initialize the translation table to convert system | |
630 | call numbers into printable system call names. Done once per | |
631 | gdb run, on initialization. | |
632 | ||
633 | NOTES | |
634 | ||
635 | This is awfully ugly, but preprocessor tricks to make it prettier | |
636 | tend to be nonportable. | |
637 | */ | |
638 | ||
639 | static void | |
640 | init_syscall_table () | |
641 | { | |
cc221e76 FF |
642 | #if defined (SYS_exit) |
643 | syscall_table[SYS_exit] = "exit"; | |
644 | #endif | |
645 | #if defined (SYS_fork) | |
646 | syscall_table[SYS_fork] = "fork"; | |
647 | #endif | |
648 | #if defined (SYS_read) | |
649 | syscall_table[SYS_read] = "read"; | |
650 | #endif | |
651 | #if defined (SYS_write) | |
652 | syscall_table[SYS_write] = "write"; | |
653 | #endif | |
654 | #if defined (SYS_open) | |
655 | syscall_table[SYS_open] = "open"; | |
656 | #endif | |
657 | #if defined (SYS_close) | |
658 | syscall_table[SYS_close] = "close"; | |
659 | #endif | |
660 | #if defined (SYS_wait) | |
661 | syscall_table[SYS_wait] = "wait"; | |
662 | #endif | |
663 | #if defined (SYS_creat) | |
664 | syscall_table[SYS_creat] = "creat"; | |
665 | #endif | |
666 | #if defined (SYS_link) | |
667 | syscall_table[SYS_link] = "link"; | |
668 | #endif | |
669 | #if defined (SYS_unlink) | |
670 | syscall_table[SYS_unlink] = "unlink"; | |
671 | #endif | |
672 | #if defined (SYS_exec) | |
673 | syscall_table[SYS_exec] = "exec"; | |
674 | #endif | |
675 | #if defined (SYS_execv) | |
676 | syscall_table[SYS_execv] = "execv"; | |
677 | #endif | |
678 | #if defined (SYS_execve) | |
679 | syscall_table[SYS_execve] = "execve"; | |
680 | #endif | |
681 | #if defined (SYS_chdir) | |
682 | syscall_table[SYS_chdir] = "chdir"; | |
683 | #endif | |
684 | #if defined (SYS_time) | |
685 | syscall_table[SYS_time] = "time"; | |
686 | #endif | |
687 | #if defined (SYS_mknod) | |
688 | syscall_table[SYS_mknod] = "mknod"; | |
689 | #endif | |
690 | #if defined (SYS_chmod) | |
691 | syscall_table[SYS_chmod] = "chmod"; | |
692 | #endif | |
693 | #if defined (SYS_chown) | |
694 | syscall_table[SYS_chown] = "chown"; | |
695 | #endif | |
696 | #if defined (SYS_brk) | |
697 | syscall_table[SYS_brk] = "brk"; | |
698 | #endif | |
699 | #if defined (SYS_stat) | |
700 | syscall_table[SYS_stat] = "stat"; | |
701 | #endif | |
702 | #if defined (SYS_lseek) | |
703 | syscall_table[SYS_lseek] = "lseek"; | |
704 | #endif | |
705 | #if defined (SYS_getpid) | |
706 | syscall_table[SYS_getpid] = "getpid"; | |
707 | #endif | |
708 | #if defined (SYS_mount) | |
709 | syscall_table[SYS_mount] = "mount"; | |
710 | #endif | |
711 | #if defined (SYS_umount) | |
712 | syscall_table[SYS_umount] = "umount"; | |
713 | #endif | |
714 | #if defined (SYS_setuid) | |
715 | syscall_table[SYS_setuid] = "setuid"; | |
716 | #endif | |
717 | #if defined (SYS_getuid) | |
718 | syscall_table[SYS_getuid] = "getuid"; | |
719 | #endif | |
720 | #if defined (SYS_stime) | |
721 | syscall_table[SYS_stime] = "stime"; | |
722 | #endif | |
723 | #if defined (SYS_ptrace) | |
724 | syscall_table[SYS_ptrace] = "ptrace"; | |
725 | #endif | |
726 | #if defined (SYS_alarm) | |
727 | syscall_table[SYS_alarm] = "alarm"; | |
728 | #endif | |
729 | #if defined (SYS_fstat) | |
730 | syscall_table[SYS_fstat] = "fstat"; | |
731 | #endif | |
732 | #if defined (SYS_pause) | |
733 | syscall_table[SYS_pause] = "pause"; | |
734 | #endif | |
735 | #if defined (SYS_utime) | |
736 | syscall_table[SYS_utime] = "utime"; | |
737 | #endif | |
738 | #if defined (SYS_stty) | |
739 | syscall_table[SYS_stty] = "stty"; | |
740 | #endif | |
741 | #if defined (SYS_gtty) | |
742 | syscall_table[SYS_gtty] = "gtty"; | |
743 | #endif | |
744 | #if defined (SYS_access) | |
745 | syscall_table[SYS_access] = "access"; | |
746 | #endif | |
747 | #if defined (SYS_nice) | |
748 | syscall_table[SYS_nice] = "nice"; | |
749 | #endif | |
750 | #if defined (SYS_statfs) | |
751 | syscall_table[SYS_statfs] = "statfs"; | |
752 | #endif | |
753 | #if defined (SYS_sync) | |
754 | syscall_table[SYS_sync] = "sync"; | |
755 | #endif | |
756 | #if defined (SYS_kill) | |
757 | syscall_table[SYS_kill] = "kill"; | |
758 | #endif | |
759 | #if defined (SYS_fstatfs) | |
760 | syscall_table[SYS_fstatfs] = "fstatfs"; | |
761 | #endif | |
762 | #if defined (SYS_pgrpsys) | |
763 | syscall_table[SYS_pgrpsys] = "pgrpsys"; | |
764 | #endif | |
765 | #if defined (SYS_xenix) | |
766 | syscall_table[SYS_xenix] = "xenix"; | |
767 | #endif | |
768 | #if defined (SYS_dup) | |
769 | syscall_table[SYS_dup] = "dup"; | |
770 | #endif | |
771 | #if defined (SYS_pipe) | |
772 | syscall_table[SYS_pipe] = "pipe"; | |
773 | #endif | |
774 | #if defined (SYS_times) | |
775 | syscall_table[SYS_times] = "times"; | |
776 | #endif | |
777 | #if defined (SYS_profil) | |
778 | syscall_table[SYS_profil] = "profil"; | |
779 | #endif | |
780 | #if defined (SYS_plock) | |
781 | syscall_table[SYS_plock] = "plock"; | |
782 | #endif | |
783 | #if defined (SYS_setgid) | |
784 | syscall_table[SYS_setgid] = "setgid"; | |
785 | #endif | |
786 | #if defined (SYS_getgid) | |
787 | syscall_table[SYS_getgid] = "getgid"; | |
788 | #endif | |
789 | #if defined (SYS_signal) | |
790 | syscall_table[SYS_signal] = "signal"; | |
791 | #endif | |
792 | #if defined (SYS_msgsys) | |
793 | syscall_table[SYS_msgsys] = "msgsys"; | |
794 | #endif | |
795 | #if defined (SYS_sys3b) | |
796 | syscall_table[SYS_sys3b] = "sys3b"; | |
797 | #endif | |
798 | #if defined (SYS_acct) | |
799 | syscall_table[SYS_acct] = "acct"; | |
800 | #endif | |
801 | #if defined (SYS_shmsys) | |
802 | syscall_table[SYS_shmsys] = "shmsys"; | |
803 | #endif | |
804 | #if defined (SYS_semsys) | |
805 | syscall_table[SYS_semsys] = "semsys"; | |
806 | #endif | |
807 | #if defined (SYS_ioctl) | |
808 | syscall_table[SYS_ioctl] = "ioctl"; | |
809 | #endif | |
810 | #if defined (SYS_uadmin) | |
811 | syscall_table[SYS_uadmin] = "uadmin"; | |
812 | #endif | |
813 | #if defined (SYS_utssys) | |
814 | syscall_table[SYS_utssys] = "utssys"; | |
815 | #endif | |
816 | #if defined (SYS_fsync) | |
817 | syscall_table[SYS_fsync] = "fsync"; | |
818 | #endif | |
819 | #if defined (SYS_umask) | |
820 | syscall_table[SYS_umask] = "umask"; | |
821 | #endif | |
822 | #if defined (SYS_chroot) | |
823 | syscall_table[SYS_chroot] = "chroot"; | |
824 | #endif | |
825 | #if defined (SYS_fcntl) | |
826 | syscall_table[SYS_fcntl] = "fcntl"; | |
827 | #endif | |
828 | #if defined (SYS_ulimit) | |
829 | syscall_table[SYS_ulimit] = "ulimit"; | |
830 | #endif | |
831 | #if defined (SYS_rfsys) | |
832 | syscall_table[SYS_rfsys] = "rfsys"; | |
833 | #endif | |
834 | #if defined (SYS_rmdir) | |
835 | syscall_table[SYS_rmdir] = "rmdir"; | |
836 | #endif | |
837 | #if defined (SYS_mkdir) | |
838 | syscall_table[SYS_mkdir] = "mkdir"; | |
839 | #endif | |
840 | #if defined (SYS_getdents) | |
841 | syscall_table[SYS_getdents] = "getdents"; | |
842 | #endif | |
843 | #if defined (SYS_sysfs) | |
844 | syscall_table[SYS_sysfs] = "sysfs"; | |
845 | #endif | |
846 | #if defined (SYS_getmsg) | |
847 | syscall_table[SYS_getmsg] = "getmsg"; | |
848 | #endif | |
849 | #if defined (SYS_putmsg) | |
850 | syscall_table[SYS_putmsg] = "putmsg"; | |
851 | #endif | |
852 | #if defined (SYS_poll) | |
853 | syscall_table[SYS_poll] = "poll"; | |
854 | #endif | |
855 | #if defined (SYS_lstat) | |
856 | syscall_table[SYS_lstat] = "lstat"; | |
857 | #endif | |
858 | #if defined (SYS_symlink) | |
859 | syscall_table[SYS_symlink] = "symlink"; | |
860 | #endif | |
861 | #if defined (SYS_readlink) | |
862 | syscall_table[SYS_readlink] = "readlink"; | |
863 | #endif | |
864 | #if defined (SYS_setgroups) | |
865 | syscall_table[SYS_setgroups] = "setgroups"; | |
866 | #endif | |
867 | #if defined (SYS_getgroups) | |
868 | syscall_table[SYS_getgroups] = "getgroups"; | |
869 | #endif | |
870 | #if defined (SYS_fchmod) | |
871 | syscall_table[SYS_fchmod] = "fchmod"; | |
872 | #endif | |
873 | #if defined (SYS_fchown) | |
874 | syscall_table[SYS_fchown] = "fchown"; | |
875 | #endif | |
876 | #if defined (SYS_sigprocmask) | |
877 | syscall_table[SYS_sigprocmask] = "sigprocmask"; | |
878 | #endif | |
879 | #if defined (SYS_sigsuspend) | |
880 | syscall_table[SYS_sigsuspend] = "sigsuspend"; | |
881 | #endif | |
882 | #if defined (SYS_sigaltstack) | |
883 | syscall_table[SYS_sigaltstack] = "sigaltstack"; | |
884 | #endif | |
885 | #if defined (SYS_sigaction) | |
886 | syscall_table[SYS_sigaction] = "sigaction"; | |
887 | #endif | |
888 | #if defined (SYS_sigpending) | |
889 | syscall_table[SYS_sigpending] = "sigpending"; | |
890 | #endif | |
891 | #if defined (SYS_context) | |
892 | syscall_table[SYS_context] = "context"; | |
893 | #endif | |
894 | #if defined (SYS_evsys) | |
895 | syscall_table[SYS_evsys] = "evsys"; | |
896 | #endif | |
897 | #if defined (SYS_evtrapret) | |
898 | syscall_table[SYS_evtrapret] = "evtrapret"; | |
899 | #endif | |
900 | #if defined (SYS_statvfs) | |
901 | syscall_table[SYS_statvfs] = "statvfs"; | |
902 | #endif | |
903 | #if defined (SYS_fstatvfs) | |
904 | syscall_table[SYS_fstatvfs] = "fstatvfs"; | |
905 | #endif | |
906 | #if defined (SYS_nfssys) | |
907 | syscall_table[SYS_nfssys] = "nfssys"; | |
908 | #endif | |
909 | #if defined (SYS_waitsys) | |
910 | syscall_table[SYS_waitsys] = "waitsys"; | |
911 | #endif | |
912 | #if defined (SYS_sigsendsys) | |
913 | syscall_table[SYS_sigsendsys] = "sigsendsys"; | |
914 | #endif | |
915 | #if defined (SYS_hrtsys) | |
916 | syscall_table[SYS_hrtsys] = "hrtsys"; | |
917 | #endif | |
918 | #if defined (SYS_acancel) | |
919 | syscall_table[SYS_acancel] = "acancel"; | |
920 | #endif | |
921 | #if defined (SYS_async) | |
922 | syscall_table[SYS_async] = "async"; | |
923 | #endif | |
924 | #if defined (SYS_priocntlsys) | |
925 | syscall_table[SYS_priocntlsys] = "priocntlsys"; | |
926 | #endif | |
927 | #if defined (SYS_pathconf) | |
928 | syscall_table[SYS_pathconf] = "pathconf"; | |
929 | #endif | |
930 | #if defined (SYS_mincore) | |
931 | syscall_table[SYS_mincore] = "mincore"; | |
932 | #endif | |
933 | #if defined (SYS_mmap) | |
934 | syscall_table[SYS_mmap] = "mmap"; | |
935 | #endif | |
936 | #if defined (SYS_mprotect) | |
937 | syscall_table[SYS_mprotect] = "mprotect"; | |
938 | #endif | |
939 | #if defined (SYS_munmap) | |
940 | syscall_table[SYS_munmap] = "munmap"; | |
941 | #endif | |
942 | #if defined (SYS_fpathconf) | |
943 | syscall_table[SYS_fpathconf] = "fpathconf"; | |
944 | #endif | |
945 | #if defined (SYS_vfork) | |
946 | syscall_table[SYS_vfork] = "vfork"; | |
947 | #endif | |
948 | #if defined (SYS_fchdir) | |
949 | syscall_table[SYS_fchdir] = "fchdir"; | |
950 | #endif | |
951 | #if defined (SYS_readv) | |
952 | syscall_table[SYS_readv] = "readv"; | |
953 | #endif | |
954 | #if defined (SYS_writev) | |
955 | syscall_table[SYS_writev] = "writev"; | |
956 | #endif | |
957 | #if defined (SYS_xstat) | |
958 | syscall_table[SYS_xstat] = "xstat"; | |
959 | #endif | |
960 | #if defined (SYS_lxstat) | |
961 | syscall_table[SYS_lxstat] = "lxstat"; | |
962 | #endif | |
963 | #if defined (SYS_fxstat) | |
964 | syscall_table[SYS_fxstat] = "fxstat"; | |
965 | #endif | |
966 | #if defined (SYS_xmknod) | |
967 | syscall_table[SYS_xmknod] = "xmknod"; | |
968 | #endif | |
969 | #if defined (SYS_clocal) | |
970 | syscall_table[SYS_clocal] = "clocal"; | |
971 | #endif | |
972 | #if defined (SYS_setrlimit) | |
973 | syscall_table[SYS_setrlimit] = "setrlimit"; | |
974 | #endif | |
975 | #if defined (SYS_getrlimit) | |
976 | syscall_table[SYS_getrlimit] = "getrlimit"; | |
977 | #endif | |
978 | #if defined (SYS_lchown) | |
979 | syscall_table[SYS_lchown] = "lchown"; | |
980 | #endif | |
981 | #if defined (SYS_memcntl) | |
982 | syscall_table[SYS_memcntl] = "memcntl"; | |
983 | #endif | |
984 | #if defined (SYS_getpmsg) | |
985 | syscall_table[SYS_getpmsg] = "getpmsg"; | |
986 | #endif | |
987 | #if defined (SYS_putpmsg) | |
988 | syscall_table[SYS_putpmsg] = "putpmsg"; | |
989 | #endif | |
990 | #if defined (SYS_rename) | |
991 | syscall_table[SYS_rename] = "rename"; | |
992 | #endif | |
993 | #if defined (SYS_uname) | |
994 | syscall_table[SYS_uname] = "uname"; | |
995 | #endif | |
996 | #if defined (SYS_setegid) | |
997 | syscall_table[SYS_setegid] = "setegid"; | |
998 | #endif | |
999 | #if defined (SYS_sysconfig) | |
1000 | syscall_table[SYS_sysconfig] = "sysconfig"; | |
1001 | #endif | |
1002 | #if defined (SYS_adjtime) | |
1003 | syscall_table[SYS_adjtime] = "adjtime"; | |
1004 | #endif | |
1005 | #if defined (SYS_systeminfo) | |
1006 | syscall_table[SYS_systeminfo] = "systeminfo"; | |
1007 | #endif | |
1008 | #if defined (SYS_seteuid) | |
1009 | syscall_table[SYS_seteuid] = "seteuid"; | |
1010 | #endif | |
1011 | } | |
35f5886e FF |
1012 | |
1013 | /* | |
1014 | ||
1015 | GLOBAL FUNCTION | |
1016 | ||
1017 | ptrace -- override library version to force errors for /proc version | |
1018 | ||
1019 | SYNOPSIS | |
1020 | ||
e676a15f | 1021 | int ptrace (int request, int pid, PTRACE_ARG3_TYPE arg3, int arg4) |
35f5886e FF |
1022 | |
1023 | DESCRIPTION | |
1024 | ||
1025 | When gdb is configured to use /proc, it should not be calling | |
1026 | or otherwise attempting to use ptrace. In order to catch errors | |
1027 | where use of /proc is configured, but some routine is still calling | |
1028 | ptrace, we provide a local version of a function with that name | |
1029 | that does nothing but issue an error message. | |
1030 | */ | |
1031 | ||
1032 | int | |
1ab3bf1b JG |
1033 | ptrace (request, pid, arg3, arg4) |
1034 | int request; | |
1035 | int pid; | |
e676a15f | 1036 | PTRACE_ARG3_TYPE arg3; |
1ab3bf1b | 1037 | int arg4; |
35f5886e FF |
1038 | { |
1039 | error ("internal error - there is a call to ptrace() somewhere"); | |
1040 | /*NOTREACHED*/ | |
1041 | } | |
1042 | ||
1043 | /* | |
1044 | ||
3fbdd536 | 1045 | LOCAL FUNCTION |
35f5886e | 1046 | |
3fbdd536 | 1047 | procfs_kill_inferior - kill any currently inferior |
35f5886e FF |
1048 | |
1049 | SYNOPSIS | |
1050 | ||
3fbdd536 | 1051 | void procfs_kill_inferior (void) |
35f5886e FF |
1052 | |
1053 | DESCRIPTION | |
1054 | ||
1055 | Kill any current inferior. | |
1056 | ||
1057 | NOTES | |
1058 | ||
1059 | Kills even attached inferiors. Presumably the user has already | |
1060 | been prompted that the inferior is an attached one rather than | |
1061 | one started by gdb. (FIXME?) | |
1062 | ||
1063 | */ | |
1064 | ||
3fbdd536 JG |
1065 | static void |
1066 | procfs_kill_inferior () | |
35f5886e FF |
1067 | { |
1068 | if (inferior_pid != 0) | |
1069 | { | |
1070 | unconditionally_kill_inferior (); | |
1071 | target_mourn_inferior (); | |
1072 | } | |
1073 | } | |
1074 | ||
1075 | /* | |
1076 | ||
1077 | LOCAL FUNCTION | |
1078 | ||
1079 | unconditionally_kill_inferior - terminate the inferior | |
1080 | ||
1081 | SYNOPSIS | |
1082 | ||
1083 | static void unconditionally_kill_inferior (void) | |
1084 | ||
1085 | DESCRIPTION | |
1086 | ||
1087 | Kill the current inferior. Should not be called until it | |
1088 | is at least tested that there is an inferior. | |
1089 | ||
1090 | NOTE | |
1091 | ||
1092 | A possibly useful enhancement would be to first try sending | |
1093 | the inferior a terminate signal, politely asking it to commit | |
1094 | suicide, before we murder it. | |
1095 | ||
1096 | */ | |
1097 | ||
1098 | static void | |
1ab3bf1b | 1099 | unconditionally_kill_inferior () |
35f5886e FF |
1100 | { |
1101 | int signo; | |
1102 | ||
1103 | signo = SIGKILL; | |
4ed3a9ea | 1104 | ioctl (pi.fd, PIOCKILL, &signo); |
a39ad5ce | 1105 | close_proc_file (&pi); |
35f5886e FF |
1106 | wait ((int *) 0); |
1107 | } | |
1108 | ||
1109 | /* | |
1110 | ||
3fbdd536 | 1111 | LOCAL FUNCTION |
35f5886e | 1112 | |
3fbdd536 | 1113 | procfs_xfer_memory -- copy data to or from inferior memory space |
35f5886e FF |
1114 | |
1115 | SYNOPSIS | |
1116 | ||
3fbdd536 | 1117 | int procfs_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, |
35f5886e FF |
1118 | int dowrite, struct target_ops target) |
1119 | ||
1120 | DESCRIPTION | |
1121 | ||
1122 | Copy LEN bytes to/from inferior's memory starting at MEMADDR | |
1123 | from/to debugger memory starting at MYADDR. Copy from inferior | |
1124 | if DOWRITE is zero or to inferior if DOWRITE is nonzero. | |
1125 | ||
1126 | Returns the length copied, which is either the LEN argument or | |
3fbdd536 | 1127 | zero. This xfer function does not do partial moves, since procfs_ops |
35f5886e FF |
1128 | doesn't allow memory operations to cross below us in the target stack |
1129 | anyway. | |
1130 | ||
1131 | NOTES | |
1132 | ||
1133 | The /proc interface makes this an almost trivial task. | |
1134 | */ | |
1135 | ||
3fbdd536 JG |
1136 | static int |
1137 | procfs_xfer_memory (memaddr, myaddr, len, dowrite, target) | |
1ab3bf1b JG |
1138 | CORE_ADDR memaddr; |
1139 | char *myaddr; | |
1140 | int len; | |
1141 | int dowrite; | |
1142 | struct target_ops *target; /* ignored */ | |
35f5886e FF |
1143 | { |
1144 | int nbytes = 0; | |
1145 | ||
1146 | if (lseek (pi.fd, (off_t) memaddr, 0) == (off_t) memaddr) | |
1147 | { | |
1148 | if (dowrite) | |
1149 | { | |
1150 | nbytes = write (pi.fd, myaddr, len); | |
1151 | } | |
1152 | else | |
1153 | { | |
1154 | nbytes = read (pi.fd, myaddr, len); | |
1155 | } | |
1156 | if (nbytes < 0) | |
1157 | { | |
1158 | nbytes = 0; | |
1159 | } | |
1160 | } | |
1161 | return (nbytes); | |
1162 | } | |
1163 | ||
1164 | /* | |
1165 | ||
3fbdd536 | 1166 | LOCAL FUNCTION |
35f5886e | 1167 | |
3fbdd536 | 1168 | procfs_store_registers -- copy register values back to inferior |
35f5886e FF |
1169 | |
1170 | SYNOPSIS | |
1171 | ||
3fbdd536 | 1172 | void procfs_store_registers (int regno) |
35f5886e FF |
1173 | |
1174 | DESCRIPTION | |
1175 | ||
1176 | Store our current register values back into the inferior. If | |
1177 | REGNO is -1 then store all the register, otherwise store just | |
1178 | the value specified by REGNO. | |
1179 | ||
1180 | NOTES | |
1181 | ||
1182 | If we are storing only a single register, we first have to get all | |
1183 | the current values from the process, overwrite the desired register | |
1184 | in the gregset with the one we want from gdb's registers, and then | |
1185 | send the whole set back to the process. For writing all the | |
1186 | registers, all we have to do is generate the gregset and send it to | |
1187 | the process. | |
1188 | ||
1189 | Also note that the process has to be stopped on an event of interest | |
1190 | for this to work, which basically means that it has to have been | |
1191 | run under the control of one of the other /proc ioctl calls and not | |
1192 | ptrace. Since we don't use ptrace anyway, we don't worry about this | |
1193 | fine point, but it is worth noting for future reference. | |
1194 | ||
1195 | Gdb is confused about what this function is supposed to return. | |
1196 | Some versions return a value, others return nothing. Some are | |
1197 | declared to return a value and actually return nothing. Gdb ignores | |
1198 | anything returned. (FIXME) | |
1199 | ||
1200 | */ | |
1201 | ||
3fbdd536 JG |
1202 | static void |
1203 | procfs_store_registers (regno) | |
1ab3bf1b | 1204 | int regno; |
35f5886e FF |
1205 | { |
1206 | if (regno != -1) | |
1207 | { | |
4ed3a9ea | 1208 | ioctl (pi.fd, PIOCGREG, &pi.gregset); |
35f5886e FF |
1209 | } |
1210 | fill_gregset (&pi.gregset, regno); | |
4ed3a9ea | 1211 | ioctl (pi.fd, PIOCSREG, &pi.gregset); |
35f5886e FF |
1212 | |
1213 | #if defined (FP0_REGNUM) | |
1214 | ||
1215 | /* Now repeat everything using the floating point register set, if the | |
1216 | target has floating point hardware. Since we ignore the returned value, | |
1217 | we'll never know whether it worked or not anyway. */ | |
1218 | ||
1219 | if (regno != -1) | |
1220 | { | |
4ed3a9ea | 1221 | ioctl (pi.fd, PIOCGFPREG, &pi.fpregset); |
35f5886e FF |
1222 | } |
1223 | fill_fpregset (&pi.fpregset, regno); | |
4ed3a9ea | 1224 | ioctl (pi.fd, PIOCSFPREG, &pi.fpregset); |
35f5886e FF |
1225 | |
1226 | #endif /* FP0_REGNUM */ | |
1227 | ||
1228 | } | |
1229 | ||
1230 | /* | |
1231 | ||
3fbdd536 | 1232 | LOCAL FUNCTION |
35f5886e | 1233 | |
3fbdd536 | 1234 | procfs_init_inferior - initialize access to a /proc entry |
35f5886e FF |
1235 | |
1236 | SYNOPSIS | |
1237 | ||
3fbdd536 | 1238 | void procfs_init_inferior (int pid) |
35f5886e FF |
1239 | |
1240 | DESCRIPTION | |
1241 | ||
1242 | When gdb starts an inferior, this function is called in the parent | |
1243 | process immediately after the fork. It waits for the child to stop | |
1244 | on the return from the exec system call (the child itself takes care | |
1245 | of ensuring that this is set up), then sets up the set of signals | |
1246 | and faults that are to be traced. | |
1247 | ||
1248 | NOTES | |
1249 | ||
1250 | If proc_init_failed ever gets called, control returns to the command | |
1251 | processing loop via the standard error handling code. | |
cc221e76 | 1252 | |
35f5886e FF |
1253 | */ |
1254 | ||
3fbdd536 JG |
1255 | static void |
1256 | procfs_init_inferior (pid) | |
1ab3bf1b | 1257 | int pid; |
35f5886e | 1258 | { |
3fbdd536 JG |
1259 | |
1260 | push_target (&procfs_ops); | |
1261 | ||
ec8ceca3 | 1262 | if (!open_proc_file (pid, &pi, O_RDWR)) |
35f5886e FF |
1263 | { |
1264 | proc_init_failed ("can't open process file"); | |
1265 | } | |
1266 | else | |
1267 | { | |
4ed3a9ea | 1268 | memset ((char *) &pi.prrun, 0, sizeof (pi.prrun)); |
35f5886e | 1269 | prfillset (&pi.prrun.pr_trace); |
cc221e76 | 1270 | proc_signal_handling_change (); |
35f5886e FF |
1271 | prfillset (&pi.prrun.pr_fault); |
1272 | prdelset (&pi.prrun.pr_fault, FLTPAGE); | |
1273 | if (ioctl (pi.fd, PIOCWSTOP, &pi.prstatus) < 0) | |
1274 | { | |
1275 | proc_init_failed ("PIOCWSTOP failed"); | |
1276 | } | |
35f5886e FF |
1277 | else if (ioctl (pi.fd, PIOCSFAULT, &pi.prrun.pr_fault) < 0) |
1278 | { | |
1279 | proc_init_failed ("PIOCSFAULT failed"); | |
1280 | } | |
1281 | } | |
1282 | } | |
1283 | ||
1284 | /* | |
1285 | ||
cc221e76 FF |
1286 | GLOBAL FUNCTION |
1287 | ||
1288 | proc_signal_handling_change | |
1289 | ||
1290 | SYNOPSIS | |
1291 | ||
1292 | void proc_signal_handling_change (void); | |
1293 | ||
1294 | DESCRIPTION | |
1295 | ||
1296 | When the user changes the state of gdb's signal handling via the | |
1297 | "handle" command, this function gets called to see if any change | |
1298 | in the /proc interface is required. It is also called internally | |
1299 | by other /proc interface functions to initialize the state of | |
1300 | the traced signal set. | |
1301 | ||
1302 | One thing it does is that signals for which the state is "nostop", | |
1303 | "noprint", and "pass", have their trace bits reset in the pr_trace | |
1304 | field, so that they are no longer traced. This allows them to be | |
1305 | delivered directly to the inferior without the debugger ever being | |
1306 | involved. | |
1307 | */ | |
1308 | ||
1309 | void | |
1310 | proc_signal_handling_change () | |
1311 | { | |
1312 | int signo; | |
1313 | ||
1314 | if (pi.valid) | |
1315 | { | |
1316 | for (signo = 0; signo < NSIG; signo++) | |
1317 | { | |
1318 | if (signal_stop_state (signo) == 0 && | |
1319 | signal_print_state (signo) == 0 && | |
1320 | signal_pass_state (signo) == 1) | |
1321 | { | |
1322 | prdelset (&pi.prrun.pr_trace, signo); | |
1323 | } | |
1324 | else | |
1325 | { | |
1326 | praddset (&pi.prrun.pr_trace, signo); | |
1327 | } | |
1328 | } | |
1329 | if (ioctl (pi.fd, PIOCSTRACE, &pi.prrun.pr_trace)) | |
1330 | { | |
1331 | print_sys_errmsg ("PIOCSTRACE failed", errno); | |
1332 | } | |
1333 | } | |
1334 | } | |
1335 | ||
1336 | /* | |
1337 | ||
3fbdd536 | 1338 | LOCAL FUNCTION |
35f5886e FF |
1339 | |
1340 | proc_set_exec_trap -- arrange for exec'd child to halt at startup | |
1341 | ||
1342 | SYNOPSIS | |
1343 | ||
1344 | void proc_set_exec_trap (void) | |
1345 | ||
1346 | DESCRIPTION | |
1347 | ||
1348 | This function is called in the child process when starting up | |
1349 | an inferior, prior to doing the exec of the actual inferior. | |
1350 | It sets the child process's exitset to make exit from the exec | |
1351 | system call an event of interest to stop on, and then simply | |
1352 | returns. The child does the exec, the system call returns, and | |
1353 | the child stops at the first instruction, ready for the gdb | |
1354 | parent process to take control of it. | |
1355 | ||
1356 | NOTE | |
1357 | ||
1358 | We need to use all local variables since the child may be sharing | |
1359 | it's data space with the parent, if vfork was used rather than | |
1360 | fork. | |
cc221e76 FF |
1361 | |
1362 | Also note that we want to turn off the inherit-on-fork flag in | |
1363 | the child process so that any grand-children start with all | |
1364 | tracing flags cleared. | |
35f5886e FF |
1365 | */ |
1366 | ||
3fbdd536 | 1367 | static void |
1ab3bf1b | 1368 | proc_set_exec_trap () |
35f5886e FF |
1369 | { |
1370 | sysset_t exitset; | |
1371 | auto char procname[32]; | |
1372 | int fd; | |
1373 | ||
4ed3a9ea | 1374 | sprintf (procname, PROC_NAME_FMT, getpid ()); |
35f5886e FF |
1375 | if ((fd = open (procname, O_RDWR)) < 0) |
1376 | { | |
1377 | perror (procname); | |
1378 | fflush (stderr); | |
1379 | _exit (127); | |
1380 | } | |
1381 | premptyset (&exitset); | |
407a8389 | 1382 | |
cc221e76 FF |
1383 | /* GW: Rationale... |
1384 | Not all systems with /proc have all the exec* syscalls with the same | |
1385 | names. On the SGI, for example, there is no SYS_exec, but there | |
1386 | *is* a SYS_execv. So, we try to account for that. */ | |
1387 | ||
407a8389 | 1388 | #ifdef SYS_exec |
35f5886e | 1389 | praddset (&exitset, SYS_exec); |
407a8389 SG |
1390 | #endif |
1391 | #ifdef SYS_execve | |
35f5886e | 1392 | praddset (&exitset, SYS_execve); |
407a8389 SG |
1393 | #endif |
1394 | #ifdef SYS_execv | |
1395 | praddset(&exitset, SYS_execv); | |
1396 | #endif | |
1397 | ||
35f5886e FF |
1398 | if (ioctl (fd, PIOCSEXIT, &exitset) < 0) |
1399 | { | |
1400 | perror (procname); | |
1401 | fflush (stderr); | |
1402 | _exit (127); | |
1403 | } | |
cc221e76 FF |
1404 | |
1405 | /* Turn off inherit-on-fork flag so that all grand-children of gdb | |
1406 | start with tracing flags cleared. */ | |
1407 | ||
5c1c5e67 | 1408 | #if defined (PIOCRESET) /* New method */ |
cc221e76 FF |
1409 | { |
1410 | long pr_flags; | |
1411 | pr_flags = PR_FORK; | |
4ed3a9ea | 1412 | ioctl (fd, PIOCRESET, &pr_flags); |
cc221e76 | 1413 | } |
5c1c5e67 FF |
1414 | #else |
1415 | #if defined (PIOCRFORK) /* Original method */ | |
4ed3a9ea | 1416 | ioctl (fd, PIOCRFORK, NULL); |
cc221e76 | 1417 | #endif |
ec8ceca3 JG |
1418 | #endif |
1419 | ||
1420 | /* Turn on run-on-last-close flag so that this process will not hang | |
1421 | if GDB goes away for some reason. */ | |
1422 | ||
1423 | #if defined (PIOCSET) /* New method */ | |
1424 | { | |
1425 | long pr_flags; | |
1426 | pr_flags = PR_RLC; | |
1427 | (void) ioctl (fd, PIOCSET, &pr_flags); | |
1428 | } | |
1429 | #else | |
1430 | #if defined (PIOCSRLC) /* Original method */ | |
1431 | (void) ioctl (fd, PIOCSRLC, 0); | |
1432 | #endif | |
cc221e76 | 1433 | #endif |
35f5886e FF |
1434 | } |
1435 | ||
f8b76e70 FF |
1436 | /* |
1437 | ||
a39ad5ce FF |
1438 | GLOBAL FUNCTION |
1439 | ||
1440 | proc_iterate_over_mappings -- call function for every mapped space | |
1441 | ||
1442 | SYNOPSIS | |
1443 | ||
1444 | int proc_iterate_over_mappings (int (*func)()) | |
1445 | ||
1446 | DESCRIPTION | |
1447 | ||
1448 | Given a pointer to a function, call that function for every | |
1449 | mapped address space, passing it an open file descriptor for | |
1450 | the file corresponding to that mapped address space (if any) | |
1451 | and the base address of the mapped space. Quit when we hit | |
1452 | the end of the mappings or the function returns nonzero. | |
1453 | */ | |
1454 | ||
1455 | int | |
1ab3bf1b JG |
1456 | proc_iterate_over_mappings (func) |
1457 | int (*func) PARAMS ((int, CORE_ADDR)); | |
a39ad5ce FF |
1458 | { |
1459 | int nmap; | |
1460 | int fd; | |
1461 | int funcstat = 0; | |
1462 | struct prmap *prmaps; | |
1463 | struct prmap *prmap; | |
a39ad5ce FF |
1464 | |
1465 | if (pi.valid && (ioctl (pi.fd, PIOCNMAP, &nmap) == 0)) | |
1466 | { | |
1ab3bf1b | 1467 | prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps)); |
a39ad5ce FF |
1468 | if (ioctl (pi.fd, PIOCMAP, prmaps) == 0) |
1469 | { | |
1470 | for (prmap = prmaps; prmap -> pr_size && funcstat == 0; ++prmap) | |
1471 | { | |
1ab3bf1b JG |
1472 | fd = proc_address_to_fd ((CORE_ADDR) prmap -> pr_vaddr, 0); |
1473 | funcstat = (*func) (fd, (CORE_ADDR) prmap -> pr_vaddr); | |
a39ad5ce FF |
1474 | close (fd); |
1475 | } | |
1476 | } | |
1477 | } | |
1478 | return (funcstat); | |
1479 | } | |
1480 | ||
3fbdd536 | 1481 | #if 0 /* Currently unused */ |
a39ad5ce FF |
1482 | /* |
1483 | ||
f8b76e70 FF |
1484 | GLOBAL FUNCTION |
1485 | ||
1486 | proc_base_address -- find base address for segment containing address | |
1487 | ||
1488 | SYNOPSIS | |
1489 | ||
1490 | CORE_ADDR proc_base_address (CORE_ADDR addr) | |
1491 | ||
1492 | DESCRIPTION | |
1493 | ||
1494 | Given an address of a location in the inferior, find and return | |
1495 | the base address of the mapped segment containing that address. | |
1496 | ||
1497 | This is used for example, by the shared library support code, | |
1498 | where we have the pc value for some location in the shared library | |
1499 | where we are stopped, and need to know the base address of the | |
1500 | segment containing that address. | |
1501 | */ | |
1502 | ||
f8b76e70 | 1503 | CORE_ADDR |
1ab3bf1b | 1504 | proc_base_address (addr) |
cc221e76 | 1505 | CORE_ADDR addr; |
f8b76e70 FF |
1506 | { |
1507 | int nmap; | |
1508 | struct prmap *prmaps; | |
1509 | struct prmap *prmap; | |
1510 | CORE_ADDR baseaddr = 0; | |
1511 | ||
a39ad5ce | 1512 | if (pi.valid && (ioctl (pi.fd, PIOCNMAP, &nmap) == 0)) |
f8b76e70 | 1513 | { |
1ab3bf1b | 1514 | prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps)); |
f8b76e70 FF |
1515 | if (ioctl (pi.fd, PIOCMAP, prmaps) == 0) |
1516 | { | |
1517 | for (prmap = prmaps; prmap -> pr_size; ++prmap) | |
1518 | { | |
1519 | if ((prmap -> pr_vaddr <= (caddr_t) addr) && | |
1520 | (prmap -> pr_vaddr + prmap -> pr_size > (caddr_t) addr)) | |
1521 | { | |
1522 | baseaddr = (CORE_ADDR) prmap -> pr_vaddr; | |
1523 | break; | |
1524 | } | |
1525 | } | |
1526 | } | |
1527 | } | |
1528 | return (baseaddr); | |
1529 | } | |
1530 | ||
1ab3bf1b JG |
1531 | #endif /* 0 */ |
1532 | ||
f8b76e70 FF |
1533 | /* |
1534 | ||
cc221e76 | 1535 | LOCAL FUNCTION |
f8b76e70 FF |
1536 | |
1537 | proc_address_to_fd -- return open fd for file mapped to address | |
1538 | ||
1539 | SYNOPSIS | |
1540 | ||
a39ad5ce | 1541 | int proc_address_to_fd (CORE_ADDR addr, complain) |
f8b76e70 FF |
1542 | |
1543 | DESCRIPTION | |
1544 | ||
1545 | Given an address in the current inferior's address space, use the | |
1546 | /proc interface to find an open file descriptor for the file that | |
1547 | this address was mapped in from. Return -1 if there is no current | |
1548 | inferior. Print a warning message if there is an inferior but | |
1549 | the address corresponds to no file (IE a bogus address). | |
1550 | ||
1551 | */ | |
1552 | ||
1ab3bf1b JG |
1553 | static int |
1554 | proc_address_to_fd (addr, complain) | |
1555 | CORE_ADDR addr; | |
1556 | int complain; | |
f8b76e70 FF |
1557 | { |
1558 | int fd = -1; | |
1559 | ||
1560 | if (pi.valid) | |
1561 | { | |
1562 | if ((fd = ioctl (pi.fd, PIOCOPENM, (caddr_t *) &addr)) < 0) | |
1563 | { | |
a39ad5ce FF |
1564 | if (complain) |
1565 | { | |
1566 | print_sys_errmsg (pi.pathname, errno); | |
1567 | warning ("can't find mapped file for address 0x%x", addr); | |
1568 | } | |
f8b76e70 FF |
1569 | } |
1570 | } | |
1571 | return (fd); | |
1572 | } | |
1573 | ||
35f5886e | 1574 | |
3fbdd536 JG |
1575 | /* Attach to process PID, then initialize for debugging it |
1576 | and wait for the trace-trap that results from attaching. */ | |
1577 | ||
1578 | static void | |
1579 | procfs_attach (args, from_tty) | |
1580 | char *args; | |
1581 | int from_tty; | |
1582 | { | |
1583 | char *exec_file; | |
1584 | int pid; | |
1585 | ||
1586 | if (!args) | |
1587 | error_no_arg ("process-id to attach"); | |
1588 | ||
1589 | pid = atoi (args); | |
1590 | ||
1591 | if (pid == getpid()) /* Trying to masturbate? */ | |
1592 | error ("I refuse to debug myself!"); | |
1593 | ||
1594 | if (from_tty) | |
1595 | { | |
1596 | exec_file = (char *) get_exec_file (0); | |
1597 | ||
1598 | if (exec_file) | |
1599 | printf ("Attaching program `%s', pid %d\n", exec_file, pid); | |
1600 | else | |
1601 | printf ("Attaching pid %d\n", pid); | |
1602 | ||
1603 | fflush (stdout); | |
1604 | } | |
1605 | ||
1606 | do_attach (pid); | |
1607 | inferior_pid = pid; | |
1608 | push_target (&procfs_ops); | |
1609 | } | |
1610 | ||
1611 | ||
1612 | /* Take a program previously attached to and detaches it. | |
1613 | The program resumes execution and will no longer stop | |
1614 | on signals, etc. We'd better not have left any breakpoints | |
1615 | in the program or it'll die when it hits one. For this | |
1616 | to work, it may be necessary for the process to have been | |
1617 | previously attached. It *might* work if the program was | |
1618 | started via the normal ptrace (PTRACE_TRACEME). */ | |
1619 | ||
1620 | static void | |
1621 | procfs_detach (args, from_tty) | |
1622 | char *args; | |
1623 | int from_tty; | |
1624 | { | |
1625 | int siggnal = 0; | |
1626 | ||
1627 | if (from_tty) | |
1628 | { | |
1629 | char *exec_file = get_exec_file (0); | |
1630 | if (exec_file == 0) | |
1631 | exec_file = ""; | |
1632 | printf ("Detaching program: %s pid %d\n", | |
1633 | exec_file, inferior_pid); | |
1634 | fflush (stdout); | |
1635 | } | |
1636 | if (args) | |
1637 | siggnal = atoi (args); | |
1638 | ||
1639 | do_detach (siggnal); | |
1640 | inferior_pid = 0; | |
1641 | unpush_target (&procfs_ops); /* Pop out of handling an inferior */ | |
1642 | } | |
1643 | ||
1644 | /* Get ready to modify the registers array. On machines which store | |
1645 | individual registers, this doesn't need to do anything. On machines | |
1646 | which store all the registers in one fell swoop, this makes sure | |
1647 | that registers contains all the registers from the program being | |
1648 | debugged. */ | |
1649 | ||
1650 | static void | |
1651 | procfs_prepare_to_store () | |
1652 | { | |
1653 | #ifdef CHILD_PREPARE_TO_STORE | |
1654 | CHILD_PREPARE_TO_STORE (); | |
1655 | #endif | |
1656 | } | |
1657 | ||
1658 | /* Print status information about what we're accessing. */ | |
1659 | ||
1660 | static void | |
1661 | procfs_files_info (ignore) | |
1662 | struct target_ops *ignore; | |
1663 | { | |
1664 | printf ("\tUsing the running image of %s process %d via /proc.\n", | |
1665 | attach_flag? "attached": "child", inferior_pid); | |
1666 | } | |
1667 | ||
1668 | /* ARGSUSED */ | |
1669 | static void | |
1670 | procfs_open (arg, from_tty) | |
1671 | char *arg; | |
1672 | int from_tty; | |
1673 | { | |
1674 | error ("Use the \"run\" command to start a Unix child process."); | |
1675 | } | |
35f5886e FF |
1676 | |
1677 | /* | |
1678 | ||
3fbdd536 | 1679 | LOCAL FUNCTION |
35f5886e | 1680 | |
3fbdd536 | 1681 | do_attach -- attach to an already existing process |
35f5886e FF |
1682 | |
1683 | SYNOPSIS | |
1684 | ||
3fbdd536 | 1685 | int do_attach (int pid) |
35f5886e FF |
1686 | |
1687 | DESCRIPTION | |
1688 | ||
1689 | Attach to an already existing process with the specified process | |
1690 | id. If the process is not already stopped, query whether to | |
1691 | stop it or not. | |
1692 | ||
1693 | NOTES | |
1694 | ||
1695 | The option of stopping at attach time is specific to the /proc | |
1696 | versions of gdb. Versions using ptrace force the attachee | |
ec8ceca3 JG |
1697 | to stop. (I have changed this version to do so, too. All you |
1698 | have to do is "continue" to make it go on. -- gnu@cygnus.com) | |
35f5886e FF |
1699 | |
1700 | */ | |
1701 | ||
3fbdd536 JG |
1702 | static int |
1703 | do_attach (pid) | |
1ab3bf1b | 1704 | int pid; |
35f5886e | 1705 | { |
ec8ceca3 JG |
1706 | int result; |
1707 | ||
1708 | if (!open_proc_file (pid, &pi, O_RDWR)) | |
35f5886e FF |
1709 | { |
1710 | perror_with_name (pi.pathname); | |
1711 | /* NOTREACHED */ | |
1712 | } | |
1713 | ||
1714 | /* Get current status of process and if it is not already stopped, | |
1715 | then stop it. Remember whether or not it was stopped when we first | |
1716 | examined it. */ | |
1717 | ||
1718 | if (ioctl (pi.fd, PIOCSTATUS, &pi.prstatus) < 0) | |
1719 | { | |
1720 | print_sys_errmsg (pi.pathname, errno); | |
a39ad5ce | 1721 | close_proc_file (&pi); |
35f5886e FF |
1722 | error ("PIOCSTATUS failed"); |
1723 | } | |
1724 | if (pi.prstatus.pr_flags & (PR_STOPPED | PR_ISTOP)) | |
1725 | { | |
1726 | pi.was_stopped = 1; | |
1727 | } | |
1728 | else | |
1729 | { | |
1730 | pi.was_stopped = 0; | |
ec8ceca3 | 1731 | if (1 || query ("Process is currently running, stop it? ")) |
35f5886e | 1732 | { |
ec8ceca3 JG |
1733 | /* Make it run again when we close it. */ |
1734 | #if defined (PIOCSET) /* New method */ | |
1735 | { | |
1736 | long pr_flags; | |
1737 | pr_flags = PR_RLC; | |
1738 | result = ioctl (pi.fd, PIOCSET, &pr_flags); | |
1739 | } | |
1740 | #else | |
1741 | #if defined (PIOCSRLC) /* Original method */ | |
1742 | result = ioctl (pi.fd, PIOCSRLC, 0); | |
1743 | #endif | |
1744 | #endif | |
1745 | if (result < 0) | |
1746 | { | |
1747 | print_sys_errmsg (pi.pathname, errno); | |
1748 | close_proc_file (&pi); | |
1749 | error ("PIOCSRLC or PIOCSET failed"); | |
1750 | } | |
35f5886e FF |
1751 | if (ioctl (pi.fd, PIOCSTOP, &pi.prstatus) < 0) |
1752 | { | |
1753 | print_sys_errmsg (pi.pathname, errno); | |
a39ad5ce | 1754 | close_proc_file (&pi); |
35f5886e FF |
1755 | error ("PIOCSTOP failed"); |
1756 | } | |
d65eee73 FF |
1757 | pi.nopass_next_sigstop = 1; |
1758 | } | |
1759 | else | |
1760 | { | |
1761 | printf ("Ok, gdb will wait for process %u to stop.\n", pid); | |
35f5886e FF |
1762 | } |
1763 | } | |
ec8ceca3 | 1764 | |
35f5886e FF |
1765 | /* Remember some things about the inferior that we will, or might, change |
1766 | so that we can restore them when we detach. */ | |
1767 | ||
4ed3a9ea FF |
1768 | ioctl (pi.fd, PIOCGTRACE, &pi.saved_trace); |
1769 | ioctl (pi.fd, PIOCGHOLD, &pi.saved_sighold); | |
1770 | ioctl (pi.fd, PIOCGFAULT, &pi.saved_fltset); | |
1771 | ioctl (pi.fd, PIOCGENTRY, &pi.saved_entryset); | |
1772 | ioctl (pi.fd, PIOCGEXIT, &pi.saved_exitset); | |
35f5886e FF |
1773 | |
1774 | /* Set up trace and fault sets, as gdb expects them. */ | |
1775 | ||
4ed3a9ea | 1776 | memset (&pi.prrun, 0, sizeof (pi.prrun)); |
35f5886e | 1777 | prfillset (&pi.prrun.pr_trace); |
cc221e76 | 1778 | proc_signal_handling_change (); |
35f5886e FF |
1779 | prfillset (&pi.prrun.pr_fault); |
1780 | prdelset (&pi.prrun.pr_fault, FLTPAGE); | |
1781 | if (ioctl (pi.fd, PIOCSFAULT, &pi.prrun.pr_fault)) | |
1782 | { | |
f66f459f | 1783 | print_sys_errmsg ("PIOCSFAULT failed", errno); |
35f5886e FF |
1784 | } |
1785 | if (ioctl (pi.fd, PIOCSTRACE, &pi.prrun.pr_trace)) | |
1786 | { | |
f66f459f | 1787 | print_sys_errmsg ("PIOCSTRACE failed", errno); |
35f5886e FF |
1788 | } |
1789 | attach_flag = 1; | |
1790 | return (pid); | |
1791 | } | |
1792 | ||
1793 | /* | |
1794 | ||
3fbdd536 | 1795 | LOCAL FUNCTION |
35f5886e | 1796 | |
3fbdd536 | 1797 | do_detach -- detach from an attached-to process |
35f5886e FF |
1798 | |
1799 | SYNOPSIS | |
1800 | ||
3fbdd536 | 1801 | void do_detach (int signal) |
35f5886e FF |
1802 | |
1803 | DESCRIPTION | |
1804 | ||
1805 | Detach from the current attachee. | |
1806 | ||
1807 | If signal is non-zero, the attachee is started running again and sent | |
1808 | the specified signal. | |
1809 | ||
1810 | If signal is zero and the attachee was not already stopped when we | |
1811 | attached to it, then we make it runnable again when we detach. | |
1812 | ||
1813 | Otherwise, we query whether or not to make the attachee runnable | |
1814 | again, since we may simply want to leave it in the state it was in | |
1815 | when we attached. | |
1816 | ||
1817 | We report any problems, but do not consider them errors, since we | |
1818 | MUST detach even if some things don't seem to go right. This may not | |
1819 | be the ideal situation. (FIXME). | |
1820 | */ | |
1821 | ||
3fbdd536 JG |
1822 | static void |
1823 | do_detach (signal) | |
1ab3bf1b | 1824 | int signal; |
35f5886e | 1825 | { |
ec8ceca3 JG |
1826 | int result; |
1827 | ||
35f5886e FF |
1828 | if (signal) |
1829 | { | |
6b801388 | 1830 | set_proc_siginfo (&pi, signal); |
35f5886e | 1831 | } |
cc221e76 | 1832 | if (ioctl (pi.fd, PIOCSEXIT, &pi.saved_exitset) < 0) |
35f5886e FF |
1833 | { |
1834 | print_sys_errmsg (pi.pathname, errno); | |
1835 | printf ("PIOCSEXIT failed.\n"); | |
1836 | } | |
cc221e76 | 1837 | if (ioctl (pi.fd, PIOCSENTRY, &pi.saved_entryset) < 0) |
35f5886e FF |
1838 | { |
1839 | print_sys_errmsg (pi.pathname, errno); | |
1840 | printf ("PIOCSENTRY failed.\n"); | |
1841 | } | |
cc221e76 | 1842 | if (ioctl (pi.fd, PIOCSTRACE, &pi.saved_trace) < 0) |
35f5886e FF |
1843 | { |
1844 | print_sys_errmsg (pi.pathname, errno); | |
1845 | printf ("PIOCSTRACE failed.\n"); | |
1846 | } | |
cc221e76 FF |
1847 | if (ioctl (pi.fd, PIOCSHOLD, &pi.saved_sighold) < 0) |
1848 | { | |
1849 | print_sys_errmsg (pi.pathname, errno); | |
1850 | printf ("PIOSCHOLD failed.\n"); | |
1851 | } | |
1852 | if (ioctl (pi.fd, PIOCSFAULT, &pi.saved_fltset) < 0) | |
35f5886e FF |
1853 | { |
1854 | print_sys_errmsg (pi.pathname, errno); | |
1855 | printf ("PIOCSFAULT failed.\n"); | |
1856 | } | |
1857 | if (ioctl (pi.fd, PIOCSTATUS, &pi.prstatus) < 0) | |
1858 | { | |
1859 | print_sys_errmsg (pi.pathname, errno); | |
1860 | printf ("PIOCSTATUS failed.\n"); | |
1861 | } | |
1862 | else | |
1863 | { | |
1864 | if (signal || (pi.prstatus.pr_flags & (PR_STOPPED | PR_ISTOP))) | |
1865 | { | |
1866 | if (signal || !pi.was_stopped || | |
1867 | query ("Was stopped when attached, make it runnable again? ")) | |
1868 | { | |
ec8ceca3 JG |
1869 | /* Clear any fault that might have stopped it. */ |
1870 | if (ioctl (pi.fd, PIOCCFAULT, 0)) | |
1871 | { | |
1872 | print_sys_errmsg (pi.pathname, errno); | |
1873 | printf ("PIOCCFAULT failed.\n"); | |
1874 | } | |
1875 | ||
1876 | /* Make it run again when we close it. */ | |
1877 | #if defined (PIOCSET) /* New method */ | |
1878 | { | |
1879 | long pr_flags; | |
1880 | pr_flags = PR_RLC; | |
1881 | result = ioctl (pi.fd, PIOCSET, &pr_flags); | |
1882 | } | |
1883 | #else | |
1884 | #if defined (PIOCSRLC) /* Original method */ | |
1885 | result = ioctl (pi.fd, PIOCSRLC, 0); | |
1886 | #endif | |
1887 | #endif | |
1888 | if (result) | |
35f5886e FF |
1889 | { |
1890 | print_sys_errmsg (pi.pathname, errno); | |
ec8ceca3 | 1891 | printf ("PIOCSRLC or PIOCSET failed.\n"); |
35f5886e FF |
1892 | } |
1893 | } | |
1894 | } | |
1895 | } | |
a39ad5ce | 1896 | close_proc_file (&pi); |
35f5886e FF |
1897 | attach_flag = 0; |
1898 | } | |
1899 | ||
1900 | /* | |
1901 | ||
3fbdd536 JG |
1902 | LOCAL FUNCTION |
1903 | ||
1904 | procfs_wait -- emulate wait() as much as possible | |
1905 | Wait for child to do something. Return pid of child, or -1 in case | |
1906 | of error; store status through argument pointer STATUS. | |
35f5886e | 1907 | |
35f5886e FF |
1908 | |
1909 | SYNOPSIS | |
1910 | ||
3fbdd536 | 1911 | int procfs_wait (int *statloc) |
35f5886e FF |
1912 | |
1913 | DESCRIPTION | |
1914 | ||
1915 | Try to emulate wait() as much as possible. Not sure why we can't | |
1916 | just use wait(), but it seems to have problems when applied to a | |
1917 | process being controlled with the /proc interface. | |
1918 | ||
1919 | NOTES | |
1920 | ||
1921 | We have a race problem here with no obvious solution. We need to let | |
1922 | the inferior run until it stops on an event of interest, which means | |
1923 | that we need to use the PIOCWSTOP ioctl. However, we cannot use this | |
1924 | ioctl if the process is already stopped on something that is not an | |
1925 | event of interest, or the call will hang indefinitely. Thus we first | |
1926 | use PIOCSTATUS to see if the process is not stopped. If not, then we | |
1927 | use PIOCWSTOP. But during the window between the two, if the process | |
1928 | stops for any reason that is not an event of interest (such as a job | |
1929 | control signal) then gdb will hang. One possible workaround is to set | |
1930 | an alarm to wake up every minute of so and check to see if the process | |
1931 | is still running, and if so, then reissue the PIOCWSTOP. But this is | |
1932 | a real kludge, so has not been implemented. FIXME: investigate | |
1933 | alternatives. | |
1934 | ||
1935 | FIXME: Investigate why wait() seems to have problems with programs | |
1936 | being control by /proc routines. | |
1937 | ||
1938 | */ | |
1939 | ||
3fbdd536 JG |
1940 | static int |
1941 | procfs_wait (statloc) | |
1ab3bf1b | 1942 | int *statloc; |
35f5886e FF |
1943 | { |
1944 | short what; | |
1945 | short why; | |
1946 | int statval = 0; | |
1947 | int checkerr = 0; | |
1948 | int rtnval = -1; | |
1949 | ||
1950 | if (ioctl (pi.fd, PIOCSTATUS, &pi.prstatus) < 0) | |
1951 | { | |
1952 | checkerr++; | |
1953 | } | |
1954 | else if (!(pi.prstatus.pr_flags & (PR_STOPPED | PR_ISTOP))) | |
1955 | { | |
1956 | if (ioctl (pi.fd, PIOCWSTOP, &pi.prstatus) < 0) | |
1957 | { | |
1958 | checkerr++; | |
1959 | } | |
1960 | } | |
1961 | if (checkerr) | |
1962 | { | |
1963 | if (errno == ENOENT) | |
1964 | { | |
1965 | rtnval = wait (&statval); | |
1966 | if (rtnval != inferior_pid) | |
1967 | { | |
34da3608 | 1968 | print_sys_errmsg (pi.pathname, errno); |
35f5886e FF |
1969 | error ("PIOCWSTOP, wait failed, returned %d", rtnval); |
1970 | /* NOTREACHED */ | |
1971 | } | |
1972 | } | |
1973 | else | |
1974 | { | |
1975 | print_sys_errmsg (pi.pathname, errno); | |
1976 | error ("PIOCSTATUS or PIOCWSTOP failed."); | |
1977 | /* NOTREACHED */ | |
1978 | } | |
1979 | } | |
1980 | else if (pi.prstatus.pr_flags & (PR_STOPPED | PR_ISTOP)) | |
1981 | { | |
1982 | rtnval = pi.prstatus.pr_pid; | |
1983 | why = pi.prstatus.pr_why; | |
1984 | what = pi.prstatus.pr_what; | |
1985 | if (why == PR_SIGNALLED) | |
1986 | { | |
1987 | statval = (what << 8) | 0177; | |
1988 | } | |
407a8389 SG |
1989 | else if ((why == PR_SYSEXIT) |
1990 | && | |
1991 | ( | |
1992 | #ifdef SYS_exec | |
1993 | what == SYS_exec | |
1994 | #else | |
1995 | 0 == 0 | |
1996 | #endif | |
1997 | #ifdef SYS_execve | |
1998 | || what == SYS_execve | |
1999 | #endif | |
2000 | #ifdef SYS_execv | |
2001 | || what == SYS_execv | |
2002 | #endif | |
2003 | )) | |
35f5886e FF |
2004 | { |
2005 | statval = (SIGTRAP << 8) | 0177; | |
2006 | } | |
2007 | else if (why == PR_REQUESTED) | |
2008 | { | |
2009 | statval = (SIGSTOP << 8) | 0177; | |
2010 | } | |
2011 | else if (why == PR_JOBCONTROL) | |
2012 | { | |
2013 | statval = (what << 8) | 0177; | |
2014 | } | |
2015 | else if (why == PR_FAULTED) | |
2016 | { | |
2017 | switch (what) | |
2018 | { | |
2019 | case FLTPRIV: | |
2020 | case FLTILL: | |
2021 | statval = (SIGILL << 8) | 0177; | |
2022 | break; | |
2023 | case FLTBPT: | |
2024 | case FLTTRACE: | |
2025 | statval = (SIGTRAP << 8) | 0177; | |
2026 | break; | |
2027 | case FLTSTACK: | |
2028 | case FLTACCESS: | |
2029 | case FLTBOUNDS: | |
2030 | statval = (SIGSEGV << 8) | 0177; | |
2031 | break; | |
2032 | case FLTIOVF: | |
2033 | case FLTIZDIV: | |
2034 | case FLTFPE: | |
2035 | statval = (SIGFPE << 8) | 0177; | |
2036 | break; | |
2037 | case FLTPAGE: /* Recoverable page fault */ | |
2038 | default: | |
2039 | rtnval = -1; | |
2040 | error ("PIOCWSTOP, unknown why %d, what %d", why, what); | |
2041 | /* NOTREACHED */ | |
2042 | } | |
2043 | } | |
2044 | else | |
2045 | { | |
2046 | rtnval = -1; | |
2047 | error ("PIOCWSTOP, unknown why %d, what %d", why, what); | |
2048 | /* NOTREACHED */ | |
2049 | } | |
2050 | } | |
2051 | else | |
2052 | { | |
2053 | error ("PIOCWSTOP, stopped for unknown/unhandled reason, flags %#x", | |
2054 | pi.prstatus.pr_flags); | |
2055 | /* NOTREACHED */ | |
2056 | } | |
3fbdd536 | 2057 | |
35f5886e FF |
2058 | if (statloc) |
2059 | { | |
2060 | *statloc = statval; | |
2061 | } | |
3fbdd536 JG |
2062 | |
2063 | if (rtnval == -1) /* No more children to wait for */ | |
2064 | { | |
2065 | fprintf (stderr, "Child process unexpectedly missing.\n"); | |
2066 | *statloc = 42; /* Claim it exited with signal 42 */ | |
2067 | return rtnval; | |
2068 | } | |
2069 | ||
35f5886e FF |
2070 | return (rtnval); |
2071 | } | |
2072 | ||
2073 | /* | |
2074 | ||
6b801388 FF |
2075 | LOCAL FUNCTION |
2076 | ||
2077 | set_proc_siginfo - set a process's current signal info | |
2078 | ||
2079 | SYNOPSIS | |
2080 | ||
2081 | void set_proc_siginfo (struct procinfo *pip, int signo); | |
2082 | ||
2083 | DESCRIPTION | |
2084 | ||
2085 | Given a pointer to a process info struct in PIP and a signal number | |
2086 | in SIGNO, set the process's current signal and its associated signal | |
2087 | information. The signal will be delivered to the process immediately | |
2088 | after execution is resumed, even if it is being held. In addition, | |
2089 | this particular delivery will not cause another PR_SIGNALLED stop | |
2090 | even if the signal is being traced. | |
2091 | ||
2092 | If we are not delivering the same signal that the prstatus siginfo | |
2093 | struct contains information about, then synthesize a siginfo struct | |
2094 | to match the signal we are doing to deliver, make it of the type | |
2095 | "generated by a user process", and send this synthesized copy. When | |
2096 | used to set the inferior's signal state, this will be required if we | |
2097 | are not currently stopped because of a traced signal, or if we decide | |
2098 | to continue with a different signal. | |
2099 | ||
2100 | Note that when continuing the inferior from a stop due to receipt | |
2101 | of a traced signal, we either have set PRCSIG to clear the existing | |
2102 | signal, or we have to call this function to do a PIOCSSIG with either | |
2103 | the existing siginfo struct from pr_info, or one we have synthesized | |
2104 | appropriately for the signal we want to deliver. Otherwise if the | |
2105 | signal is still being traced, the inferior will immediately stop | |
2106 | again. | |
2107 | ||
2108 | See siginfo(5) for more details. | |
2109 | */ | |
2110 | ||
2111 | static void | |
2112 | set_proc_siginfo (pip, signo) | |
cc221e76 FF |
2113 | struct procinfo *pip; |
2114 | int signo; | |
6b801388 FF |
2115 | { |
2116 | struct siginfo newsiginfo; | |
2117 | struct siginfo *sip; | |
2118 | ||
2119 | if (pip -> valid) | |
2120 | { | |
2121 | if (signo == pip -> prstatus.pr_info.si_signo) | |
2122 | { | |
2123 | sip = &pip -> prstatus.pr_info; | |
2124 | } | |
2125 | else | |
2126 | { | |
4ed3a9ea | 2127 | memset ((char *) &newsiginfo, 0, sizeof (newsiginfo)); |
6b801388 FF |
2128 | sip = &newsiginfo; |
2129 | sip -> si_signo = signo; | |
2130 | sip -> si_code = 0; | |
2131 | sip -> si_errno = 0; | |
2132 | sip -> si_pid = getpid (); | |
2133 | sip -> si_uid = getuid (); | |
2134 | } | |
2135 | if (ioctl (pip -> fd, PIOCSSIG, sip) < 0) | |
2136 | { | |
2137 | print_sys_errmsg (pip -> pathname, errno); | |
2138 | warning ("PIOCSSIG failed"); | |
2139 | } | |
2140 | } | |
2141 | } | |
2142 | ||
2143 | /* | |
2144 | ||
3fbdd536 | 2145 | LOCAL FUNCTION |
35f5886e | 2146 | |
3fbdd536 | 2147 | procfs_resume -- resume execution of the inferior process |
35f5886e FF |
2148 | |
2149 | SYNOPSIS | |
2150 | ||
3fbdd536 | 2151 | void procfs_resume (int step, int signo) |
35f5886e FF |
2152 | |
2153 | DESCRIPTION | |
2154 | ||
2155 | Resume execution of the inferior process. If STEP is nozero, then | |
2156 | just single step it. If SIGNAL is nonzero, restart it with that | |
2157 | signal activated. | |
2158 | ||
2159 | NOTE | |
2160 | ||
2161 | It may not be absolutely necessary to specify the PC value for | |
2162 | restarting, but to be safe we use the value that gdb considers | |
2163 | to be current. One case where this might be necessary is if the | |
2164 | user explicitly changes the PC value that gdb considers to be | |
2165 | current. FIXME: Investigate if this is necessary or not. | |
d65eee73 FF |
2166 | |
2167 | When attaching to a child process, if we forced it to stop with | |
2168 | a PIOCSTOP, then we will have set the nopass_next_sigstop flag. | |
2169 | Upon resuming the first time after such a stop, we explicitly | |
2170 | inhibit sending it another SIGSTOP, which would be the normal | |
2171 | result of default signal handling. One potential drawback to | |
2172 | this is that we will also ignore any attempt to by the user | |
2173 | to explicitly continue after the attach with a SIGSTOP. Ultimately | |
2174 | this problem should be dealt with by making the routines that | |
2175 | deal with the inferior a little smarter, and possibly even allow | |
2176 | an inferior to continue running at the same time as gdb. (FIXME?) | |
35f5886e FF |
2177 | */ |
2178 | ||
3fbdd536 JG |
2179 | static void |
2180 | procfs_resume (step, signo) | |
1ab3bf1b | 2181 | int step; |
cc221e76 | 2182 | int signo; |
35f5886e FF |
2183 | { |
2184 | errno = 0; | |
99fd9e3e SG |
2185 | pi.prrun.pr_flags = PRSTRACE | PRSFAULT | PRCFAULT; |
2186 | ||
c3192172 | 2187 | #ifdef PRSVADDR_BROKEN |
99fd9e3e SG |
2188 | /* Can't do this under Solaris running on a Sparc, as there seems to be no |
2189 | place to put nPC. In fact, if you use this, nPC seems to be set to some | |
2190 | random garbage. We have to rely on the fact that PC and nPC have been | |
2191 | written previously via PIOCSREG during a register flush. */ | |
2192 | ||
35f5886e | 2193 | pi.prrun.pr_vaddr = (caddr_t) *(int *) ®isters[REGISTER_BYTE (PC_REGNUM)]; |
99fd9e3e SG |
2194 | pi.prrun.pr_flags != PRSVADDR; |
2195 | #endif | |
2196 | ||
d65eee73 | 2197 | if (signo && !(signo == SIGSTOP && pi.nopass_next_sigstop)) |
35f5886e | 2198 | { |
cc221e76 | 2199 | set_proc_siginfo (&pi, signo); |
35f5886e FF |
2200 | } |
2201 | else | |
2202 | { | |
2203 | pi.prrun.pr_flags |= PRCSIG; | |
2204 | } | |
d65eee73 | 2205 | pi.nopass_next_sigstop = 0; |
35f5886e FF |
2206 | if (step) |
2207 | { | |
2208 | pi.prrun.pr_flags |= PRSTEP; | |
2209 | } | |
2210 | if (ioctl (pi.fd, PIOCRUN, &pi.prrun) != 0) | |
2211 | { | |
2212 | perror_with_name (pi.pathname); | |
2213 | /* NOTREACHED */ | |
2214 | } | |
2215 | } | |
2216 | ||
2217 | /* | |
2218 | ||
3fbdd536 | 2219 | LOCAL FUNCTION |
35f5886e | 2220 | |
3fbdd536 | 2221 | procfs_fetch_registers -- fetch current registers from inferior |
35f5886e FF |
2222 | |
2223 | SYNOPSIS | |
2224 | ||
3fbdd536 | 2225 | void procfs_fetch_registers (int regno) |
35f5886e FF |
2226 | |
2227 | DESCRIPTION | |
2228 | ||
2229 | Read the current values of the inferior's registers, both the | |
2230 | general register set and floating point registers (if supported) | |
2231 | and update gdb's idea of their current values. | |
2232 | ||
2233 | */ | |
2234 | ||
3fbdd536 JG |
2235 | static void |
2236 | procfs_fetch_registers (regno) | |
1ab3bf1b | 2237 | int regno; |
35f5886e FF |
2238 | { |
2239 | if (ioctl (pi.fd, PIOCGREG, &pi.gregset) != -1) | |
2240 | { | |
2241 | supply_gregset (&pi.gregset); | |
2242 | } | |
2243 | #if defined (FP0_REGNUM) | |
2244 | if (ioctl (pi.fd, PIOCGFPREG, &pi.fpregset) != -1) | |
2245 | { | |
2246 | supply_fpregset (&pi.fpregset); | |
2247 | } | |
2248 | #endif | |
2249 | } | |
2250 | ||
fb182850 FF |
2251 | /* |
2252 | ||
2253 | GLOBAL FUNCTION | |
2254 | ||
2255 | fetch_core_registers -- fetch current registers from core file data | |
2256 | ||
2257 | SYNOPSIS | |
2258 | ||
2259 | void fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, | |
1ab3bf1b | 2260 | int which, unsigned in reg_addr) |
fb182850 FF |
2261 | |
2262 | DESCRIPTION | |
2263 | ||
2264 | Read the values of either the general register set (WHICH equals 0) | |
2265 | or the floating point register set (WHICH equals 2) from the core | |
2266 | file data (pointed to by CORE_REG_SECT), and update gdb's idea of | |
2267 | their current values. The CORE_REG_SIZE parameter is ignored. | |
2268 | ||
2269 | NOTES | |
2270 | ||
2271 | Use the indicated sizes to validate the gregset and fpregset | |
2272 | structures. | |
2273 | */ | |
2274 | ||
2275 | void | |
1ab3bf1b | 2276 | fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr) |
cc221e76 FF |
2277 | char *core_reg_sect; |
2278 | unsigned core_reg_size; | |
2279 | int which; | |
2280 | unsigned int reg_addr; /* Unused in this version */ | |
fb182850 FF |
2281 | { |
2282 | ||
2283 | if (which == 0) | |
2284 | { | |
2285 | if (core_reg_size != sizeof (pi.gregset)) | |
2286 | { | |
2287 | warning ("wrong size gregset struct in core file"); | |
2288 | } | |
2289 | else | |
2290 | { | |
4ed3a9ea | 2291 | memcpy ((char *) &pi.gregset, core_reg_sect, sizeof (pi.gregset)); |
fb182850 FF |
2292 | supply_gregset (&pi.gregset); |
2293 | } | |
2294 | } | |
2295 | else if (which == 2) | |
2296 | { | |
2297 | if (core_reg_size != sizeof (pi.fpregset)) | |
2298 | { | |
2299 | warning ("wrong size fpregset struct in core file"); | |
2300 | } | |
2301 | else | |
2302 | { | |
4ed3a9ea | 2303 | memcpy ((char *) &pi.fpregset, core_reg_sect, sizeof (pi.fpregset)); |
fb182850 FF |
2304 | #if defined (FP0_REGNUM) |
2305 | supply_fpregset (&pi.fpregset); | |
2306 | #endif | |
2307 | } | |
2308 | } | |
2309 | } | |
35f5886e FF |
2310 | |
2311 | /* | |
2312 | ||
2313 | LOCAL FUNCTION | |
2314 | ||
2315 | proc_init_failed - called whenever /proc access initialization fails | |
2316 | ||
2317 | SYNOPSIS | |
2318 | ||
2319 | static void proc_init_failed (char *why) | |
2320 | ||
2321 | DESCRIPTION | |
2322 | ||
2323 | This function is called whenever initialization of access to a /proc | |
2324 | entry fails. It prints a suitable error message, does some cleanup, | |
2325 | and then invokes the standard error processing routine which dumps | |
2326 | us back into the command loop. | |
2327 | */ | |
2328 | ||
2329 | static void | |
1ab3bf1b JG |
2330 | proc_init_failed (why) |
2331 | char *why; | |
35f5886e FF |
2332 | { |
2333 | print_sys_errmsg (pi.pathname, errno); | |
4ed3a9ea | 2334 | kill (pi.pid, SIGKILL); |
a39ad5ce | 2335 | close_proc_file (&pi); |
35f5886e FF |
2336 | error (why); |
2337 | /* NOTREACHED */ | |
2338 | } | |
2339 | ||
2340 | /* | |
2341 | ||
2342 | LOCAL FUNCTION | |
2343 | ||
2344 | close_proc_file - close any currently open /proc entry | |
2345 | ||
2346 | SYNOPSIS | |
2347 | ||
a39ad5ce | 2348 | static void close_proc_file (struct procinfo *pip) |
35f5886e FF |
2349 | |
2350 | DESCRIPTION | |
2351 | ||
2352 | Close any currently open /proc entry and mark the process information | |
2353 | entry as invalid. In order to ensure that we don't try to reuse any | |
2354 | stale information, the pid, fd, and pathnames are explicitly | |
2355 | invalidated, which may be overkill. | |
2356 | ||
2357 | */ | |
2358 | ||
2359 | static void | |
1ab3bf1b JG |
2360 | close_proc_file (pip) |
2361 | struct procinfo *pip; | |
35f5886e | 2362 | { |
a39ad5ce FF |
2363 | pip -> pid = 0; |
2364 | if (pip -> valid) | |
35f5886e | 2365 | { |
4ed3a9ea | 2366 | close (pip -> fd); |
35f5886e | 2367 | } |
a39ad5ce FF |
2368 | pip -> fd = -1; |
2369 | if (pip -> pathname) | |
35f5886e | 2370 | { |
a39ad5ce FF |
2371 | free (pip -> pathname); |
2372 | pip -> pathname = NULL; | |
35f5886e | 2373 | } |
a39ad5ce | 2374 | pip -> valid = 0; |
35f5886e FF |
2375 | } |
2376 | ||
2377 | /* | |
2378 | ||
2379 | LOCAL FUNCTION | |
2380 | ||
2381 | open_proc_file - open a /proc entry for a given process id | |
2382 | ||
2383 | SYNOPSIS | |
2384 | ||
ec8ceca3 | 2385 | static int open_proc_file (int pid, struct procinfo *pip, int mode) |
35f5886e FF |
2386 | |
2387 | DESCRIPTION | |
2388 | ||
ec8ceca3 JG |
2389 | Given a process id and a mode, close the existing open /proc |
2390 | entry (if any) and open one for the new process id, in the | |
2391 | specified mode. Once it is open, then mark the local process | |
2392 | information structure as valid, which guarantees that the pid, | |
2393 | fd, and pathname fields match an open /proc entry. Returns | |
2394 | zero if the open fails, nonzero otherwise. | |
35f5886e FF |
2395 | |
2396 | Note that the pathname is left intact, even when the open fails, | |
2397 | so that callers can use it to construct meaningful error messages | |
2398 | rather than just "file open failed". | |
2399 | */ | |
2400 | ||
2401 | static int | |
ec8ceca3 | 2402 | open_proc_file (pid, pip, mode) |
1ab3bf1b JG |
2403 | int pid; |
2404 | struct procinfo *pip; | |
ec8ceca3 | 2405 | int mode; |
35f5886e | 2406 | { |
ec8ceca3 | 2407 | pip -> valid = 0; /* FIXME, what is this? ?! */ |
a39ad5ce FF |
2408 | if (pip -> valid) |
2409 | { | |
4ed3a9ea | 2410 | close (pip -> fd); |
a39ad5ce FF |
2411 | } |
2412 | if (pip -> pathname == NULL) | |
2413 | { | |
2414 | pip -> pathname = xmalloc (32); | |
2415 | } | |
2416 | sprintf (pip -> pathname, PROC_NAME_FMT, pid); | |
ec8ceca3 | 2417 | if ((pip -> fd = open (pip -> pathname, mode)) >= 0) |
a39ad5ce FF |
2418 | { |
2419 | pip -> valid = 1; | |
2420 | pip -> pid = pid; | |
2421 | } | |
2422 | return (pip -> valid); | |
2423 | } | |
2424 | ||
f66f459f | 2425 | static char * |
1ab3bf1b JG |
2426 | mappingflags (flags) |
2427 | long flags; | |
a39ad5ce | 2428 | { |
5c1c5e67 | 2429 | static char asciiflags[8]; |
a39ad5ce | 2430 | |
5c1c5e67 FF |
2431 | strcpy (asciiflags, "-------"); |
2432 | #if defined (MA_PHYS) | |
2433 | if (flags & MA_PHYS) asciiflags[0] = 'd'; | |
2434 | #endif | |
2435 | if (flags & MA_STACK) asciiflags[1] = 's'; | |
2436 | if (flags & MA_BREAK) asciiflags[2] = 'b'; | |
2437 | if (flags & MA_SHARED) asciiflags[3] = 's'; | |
2438 | if (flags & MA_READ) asciiflags[4] = 'r'; | |
2439 | if (flags & MA_WRITE) asciiflags[5] = 'w'; | |
2440 | if (flags & MA_EXEC) asciiflags[6] = 'x'; | |
a39ad5ce FF |
2441 | return (asciiflags); |
2442 | } | |
2443 | ||
2444 | static void | |
cc221e76 FF |
2445 | info_proc_flags (pip, summary) |
2446 | struct procinfo *pip; | |
2447 | int summary; | |
2448 | { | |
2449 | struct trans *transp; | |
2450 | ||
2451 | printf_filtered ("%-32s", "Process status flags:"); | |
2452 | if (!summary) | |
2453 | { | |
2454 | printf_filtered ("\n\n"); | |
2455 | } | |
2456 | for (transp = pr_flag_table; transp -> name != NULL; transp++) | |
2457 | { | |
2458 | if (pip -> prstatus.pr_flags & transp -> value) | |
2459 | { | |
2460 | if (summary) | |
2461 | { | |
2462 | printf_filtered ("%s ", transp -> name); | |
2463 | } | |
2464 | else | |
2465 | { | |
2466 | printf_filtered ("\t%-16s %s.\n", transp -> name, transp -> desc); | |
2467 | } | |
2468 | } | |
2469 | } | |
2470 | printf_filtered ("\n"); | |
2471 | } | |
2472 | ||
2473 | static void | |
2474 | info_proc_stop (pip, summary) | |
2475 | struct procinfo *pip; | |
2476 | int summary; | |
2477 | { | |
2478 | struct trans *transp; | |
2479 | int why; | |
2480 | int what; | |
2481 | ||
2482 | why = pip -> prstatus.pr_why; | |
2483 | what = pip -> prstatus.pr_what; | |
2484 | ||
2485 | if (pip -> prstatus.pr_flags & PR_STOPPED) | |
2486 | { | |
2487 | printf_filtered ("%-32s", "Reason for stopping:"); | |
2488 | if (!summary) | |
2489 | { | |
2490 | printf_filtered ("\n\n"); | |
2491 | } | |
2492 | for (transp = pr_why_table; transp -> name != NULL; transp++) | |
2493 | { | |
2494 | if (why == transp -> value) | |
2495 | { | |
2496 | if (summary) | |
2497 | { | |
2498 | printf_filtered ("%s ", transp -> name); | |
2499 | } | |
2500 | else | |
2501 | { | |
2502 | printf_filtered ("\t%-16s %s.\n", | |
2503 | transp -> name, transp -> desc); | |
2504 | } | |
2505 | break; | |
2506 | } | |
2507 | } | |
2508 | ||
2509 | /* Use the pr_why field to determine what the pr_what field means, and | |
2510 | print more information. */ | |
2511 | ||
2512 | switch (why) | |
2513 | { | |
2514 | case PR_REQUESTED: | |
2515 | /* pr_what is unused for this case */ | |
2516 | break; | |
2517 | case PR_JOBCONTROL: | |
2518 | case PR_SIGNALLED: | |
2519 | if (summary) | |
2520 | { | |
2521 | printf_filtered ("%s ", signalname (what)); | |
2522 | } | |
2523 | else | |
2524 | { | |
2525 | printf_filtered ("\t%-16s %s.\n", signalname (what), | |
4ace50a5 | 2526 | safe_strsignal (what)); |
cc221e76 FF |
2527 | } |
2528 | break; | |
2529 | case PR_SYSENTRY: | |
2530 | if (summary) | |
2531 | { | |
2532 | printf_filtered ("%s ", syscallname (what)); | |
2533 | } | |
2534 | else | |
2535 | { | |
2536 | printf_filtered ("\t%-16s %s.\n", syscallname (what), | |
2537 | "Entered this system call"); | |
2538 | } | |
2539 | break; | |
2540 | case PR_SYSEXIT: | |
2541 | if (summary) | |
2542 | { | |
2543 | printf_filtered ("%s ", syscallname (what)); | |
2544 | } | |
2545 | else | |
2546 | { | |
2547 | printf_filtered ("\t%-16s %s.\n", syscallname (what), | |
2548 | "Returned from this system call"); | |
2549 | } | |
2550 | break; | |
2551 | case PR_FAULTED: | |
2552 | if (summary) | |
2553 | { | |
2554 | printf_filtered ("%s ", | |
2555 | lookupname (faults_table, what, "fault")); | |
2556 | } | |
2557 | else | |
2558 | { | |
2559 | printf_filtered ("\t%-16s %s.\n", | |
2560 | lookupname (faults_table, what, "fault"), | |
2561 | lookupdesc (faults_table, what)); | |
2562 | } | |
2563 | break; | |
2564 | } | |
2565 | printf_filtered ("\n"); | |
2566 | } | |
2567 | } | |
2568 | ||
2569 | static void | |
2570 | info_proc_siginfo (pip, summary) | |
2571 | struct procinfo *pip; | |
2572 | int summary; | |
2573 | { | |
2574 | struct siginfo *sip; | |
2575 | ||
2576 | if ((pip -> prstatus.pr_flags & PR_STOPPED) && | |
2577 | (pip -> prstatus.pr_why == PR_SIGNALLED || | |
2578 | pip -> prstatus.pr_why == PR_FAULTED)) | |
2579 | { | |
2580 | printf_filtered ("%-32s", "Additional signal/fault info:"); | |
2581 | sip = &pip -> prstatus.pr_info; | |
2582 | if (summary) | |
2583 | { | |
2584 | printf_filtered ("%s ", signalname (sip -> si_signo)); | |
2585 | if (sip -> si_errno > 0) | |
2586 | { | |
4ace50a5 | 2587 | printf_filtered ("%s ", errnoname (sip -> si_errno)); |
cc221e76 FF |
2588 | } |
2589 | if (sip -> si_code <= 0) | |
2590 | { | |
2591 | printf_filtered ("sent by pid %d, uid %d ", sip -> si_pid, | |
2592 | sip -> si_uid); | |
2593 | } | |
2594 | else | |
2595 | { | |
2596 | printf_filtered ("%s ", sigcodename (sip)); | |
2597 | if ((sip -> si_signo == SIGILL) || | |
2598 | (sip -> si_signo == SIGFPE) || | |
2599 | (sip -> si_signo == SIGSEGV) || | |
2600 | (sip -> si_signo == SIGBUS)) | |
2601 | { | |
2602 | printf_filtered ("addr=%#x ", sip -> si_addr); | |
2603 | } | |
2604 | else if ((sip -> si_signo == SIGCHLD)) | |
2605 | { | |
2606 | printf_filtered ("child pid %u, status %u ", | |
2607 | sip -> si_pid, | |
2608 | sip -> si_status); | |
2609 | } | |
2610 | else if ((sip -> si_signo == SIGPOLL)) | |
2611 | { | |
2612 | printf_filtered ("band %u ", sip -> si_band); | |
2613 | } | |
2614 | } | |
2615 | } | |
2616 | else | |
2617 | { | |
2618 | printf_filtered ("\n\n"); | |
2619 | printf_filtered ("\t%-16s %s.\n", signalname (sip -> si_signo), | |
4ace50a5 | 2620 | safe_strsignal (sip -> si_signo)); |
cc221e76 FF |
2621 | if (sip -> si_errno > 0) |
2622 | { | |
2623 | printf_filtered ("\t%-16s %s.\n", | |
4ace50a5 FF |
2624 | errnoname (sip -> si_errno), |
2625 | safe_strerror (sip -> si_errno)); | |
cc221e76 FF |
2626 | } |
2627 | if (sip -> si_code <= 0) | |
2628 | { | |
2629 | printf_filtered ("\t%-16u %s\n", sip -> si_pid, | |
2630 | "PID of process sending signal"); | |
2631 | printf_filtered ("\t%-16u %s\n", sip -> si_uid, | |
2632 | "UID of process sending signal"); | |
2633 | } | |
2634 | else | |
2635 | { | |
2636 | printf_filtered ("\t%-16s %s.\n", sigcodename (sip), | |
2637 | sigcodedesc (sip)); | |
2638 | if ((sip -> si_signo == SIGILL) || | |
2639 | (sip -> si_signo == SIGFPE)) | |
2640 | { | |
2641 | printf_filtered ("\t%-16#x %s.\n", sip -> si_addr, | |
2642 | "Address of faulting instruction"); | |
2643 | } | |
2644 | else if ((sip -> si_signo == SIGSEGV) || | |
2645 | (sip -> si_signo == SIGBUS)) | |
2646 | { | |
2647 | printf_filtered ("\t%-16#x %s.\n", sip -> si_addr, | |
2648 | "Address of faulting memory reference"); | |
2649 | } | |
2650 | else if ((sip -> si_signo == SIGCHLD)) | |
2651 | { | |
2652 | printf_filtered ("\t%-16u %s.\n", sip -> si_pid, | |
2653 | "Child process ID"); | |
2654 | printf_filtered ("\t%-16u %s.\n", sip -> si_status, | |
2655 | "Child process exit value or signal"); | |
2656 | } | |
2657 | else if ((sip -> si_signo == SIGPOLL)) | |
2658 | { | |
2659 | printf_filtered ("\t%-16u %s.\n", sip -> si_band, | |
2660 | "Band event for POLL_{IN,OUT,MSG}"); | |
2661 | } | |
2662 | } | |
2663 | } | |
2664 | printf_filtered ("\n"); | |
2665 | } | |
2666 | } | |
2667 | ||
2668 | static void | |
2669 | info_proc_syscalls (pip, summary) | |
2670 | struct procinfo *pip; | |
2671 | int summary; | |
2672 | { | |
2673 | int syscallnum; | |
2674 | ||
2675 | if (!summary) | |
2676 | { | |
2677 | ||
2678 | #if 0 /* FIXME: Needs to use gdb-wide configured info about system calls. */ | |
2679 | if (pip -> prstatus.pr_flags & PR_ASLEEP) | |
2680 | { | |
2681 | int syscallnum = pip -> prstatus.pr_reg[R_D0]; | |
2682 | if (summary) | |
2683 | { | |
2684 | printf_filtered ("%-32s", "Sleeping in system call:"); | |
2685 | printf_filtered ("%s", syscallname (syscallnum)); | |
2686 | } | |
2687 | else | |
2688 | { | |
2689 | printf_filtered ("Sleeping in system call '%s'.\n", | |
2690 | syscallname (syscallnum)); | |
2691 | } | |
2692 | } | |
2693 | #endif | |
2694 | ||
2695 | if (ioctl (pip -> fd, PIOCGENTRY, &pip -> entryset) < 0) | |
2696 | { | |
2697 | print_sys_errmsg (pip -> pathname, errno); | |
2698 | error ("PIOCGENTRY failed"); | |
2699 | } | |
2700 | ||
2701 | if (ioctl (pip -> fd, PIOCGEXIT, &pip -> exitset) < 0) | |
2702 | { | |
2703 | print_sys_errmsg (pip -> pathname, errno); | |
2704 | error ("PIOCGEXIT failed"); | |
2705 | } | |
2706 | ||
2707 | printf_filtered ("System call tracing information:\n\n"); | |
2708 | ||
2709 | printf_filtered ("\t%-12s %-8s %-8s\n", | |
2710 | "System call", | |
2711 | "Entry", | |
2712 | "Exit"); | |
2713 | for (syscallnum = 0; syscallnum < MAX_SYSCALLS; syscallnum++) | |
2714 | { | |
2715 | QUIT; | |
2716 | if (syscall_table[syscallnum] != NULL) | |
2717 | { | |
2718 | printf_filtered ("\t%-12s ", syscall_table[syscallnum]); | |
2719 | printf_filtered ("%-8s ", | |
2720 | prismember (&pip -> entryset, syscallnum) | |
2721 | ? "on" : "off"); | |
2722 | printf_filtered ("%-8s ", | |
2723 | prismember (&pip -> exitset, syscallnum) | |
2724 | ? "on" : "off"); | |
2725 | printf_filtered ("\n"); | |
2726 | } | |
2727 | } | |
2728 | printf_filtered ("\n"); | |
2729 | } | |
2730 | } | |
2731 | ||
2732 | static char * | |
2733 | signalname (signo) | |
2734 | int signo; | |
2735 | { | |
4ace50a5 FF |
2736 | char *name; |
2737 | static char locbuf[32]; | |
2738 | ||
2739 | name = strsigno (signo); | |
2740 | if (name == NULL) | |
2741 | { | |
2742 | sprintf (locbuf, "Signal %d", signo); | |
2743 | } | |
2744 | else | |
2745 | { | |
2746 | sprintf (locbuf, "%s (%d)", name, signo); | |
2747 | } | |
2748 | return (locbuf); | |
2749 | } | |
2750 | ||
2751 | static char * | |
2752 | errnoname (errnum) | |
2753 | int errnum; | |
2754 | { | |
2755 | char *name; | |
cc221e76 FF |
2756 | static char locbuf[32]; |
2757 | ||
4ace50a5 FF |
2758 | name = strerrno (errnum); |
2759 | if (name == NULL) | |
cc221e76 | 2760 | { |
4ace50a5 | 2761 | sprintf (locbuf, "Errno %d", errnum); |
cc221e76 FF |
2762 | } |
2763 | else | |
2764 | { | |
4ace50a5 | 2765 | sprintf (locbuf, "%s (%d)", name, errnum); |
cc221e76 FF |
2766 | } |
2767 | return (locbuf); | |
2768 | } | |
2769 | ||
2770 | static void | |
2771 | info_proc_signals (pip, summary) | |
2772 | struct procinfo *pip; | |
2773 | int summary; | |
2774 | { | |
2775 | int signo; | |
2776 | ||
2777 | if (!summary) | |
2778 | { | |
2779 | if (ioctl (pip -> fd, PIOCGTRACE, &pip -> trace) < 0) | |
2780 | { | |
2781 | print_sys_errmsg (pip -> pathname, errno); | |
2782 | error ("PIOCGTRACE failed"); | |
2783 | } | |
2784 | ||
2785 | printf_filtered ("Disposition of signals:\n\n"); | |
2786 | printf_filtered ("\t%-15s %-8s %-8s %-8s %s\n\n", | |
2787 | "Signal", "Trace", "Hold", "Pending", "Description"); | |
2788 | for (signo = 0; signo < NSIG; signo++) | |
2789 | { | |
2790 | QUIT; | |
2791 | printf_filtered ("\t%-15s ", signalname (signo)); | |
2792 | printf_filtered ("%-8s ", | |
2793 | prismember (&pip -> trace, signo) | |
2794 | ? "on" : "off"); | |
2795 | printf_filtered ("%-8s ", | |
2796 | prismember (&pip -> prstatus.pr_sighold, signo) | |
2797 | ? "on" : "off"); | |
2798 | printf_filtered ("%-8s ", | |
2799 | prismember (&pip -> prstatus.pr_sigpend, signo) | |
2800 | ? "yes" : "no"); | |
4ace50a5 | 2801 | printf_filtered (" %s\n", safe_strsignal (signo)); |
cc221e76 FF |
2802 | } |
2803 | printf_filtered ("\n"); | |
2804 | } | |
2805 | } | |
2806 | ||
2807 | static void | |
2808 | info_proc_faults (pip, summary) | |
2809 | struct procinfo *pip; | |
2810 | int summary; | |
2811 | { | |
2812 | struct trans *transp; | |
2813 | ||
2814 | if (!summary) | |
2815 | { | |
2816 | if (ioctl (pip -> fd, PIOCGFAULT, &pip -> fltset) < 0) | |
2817 | { | |
2818 | print_sys_errmsg (pip -> pathname, errno); | |
2819 | error ("PIOCGFAULT failed"); | |
2820 | } | |
2821 | ||
2822 | printf_filtered ("Current traced hardware fault set:\n\n"); | |
2823 | printf_filtered ("\t%-12s %-8s\n", "Fault", "Trace"); | |
2824 | ||
2825 | for (transp = faults_table; transp -> name != NULL; transp++) | |
2826 | { | |
2827 | QUIT; | |
2828 | printf_filtered ("\t%-12s ", transp -> name); | |
2829 | printf_filtered ("%-8s", prismember (&pip -> fltset, transp -> value) | |
2830 | ? "on" : "off"); | |
2831 | printf_filtered ("\n"); | |
2832 | } | |
2833 | printf_filtered ("\n"); | |
2834 | } | |
2835 | } | |
2836 | ||
2837 | static void | |
2838 | info_proc_mappings (pip, summary) | |
1ab3bf1b | 2839 | struct procinfo *pip; |
cc221e76 | 2840 | int summary; |
a39ad5ce FF |
2841 | { |
2842 | int nmap; | |
2843 | struct prmap *prmaps; | |
2844 | struct prmap *prmap; | |
2845 | ||
cc221e76 | 2846 | if (!summary) |
a39ad5ce | 2847 | { |
cc221e76 | 2848 | printf_filtered ("Mapped address spaces:\n\n"); |
5c1c5e67 | 2849 | printf_filtered ("\t%10s %10s %10s %10s %7s\n", |
cc221e76 FF |
2850 | "Start Addr", |
2851 | " End Addr", | |
2852 | " Size", | |
2853 | " Offset", | |
2854 | "Flags"); | |
2855 | if (ioctl (pip -> fd, PIOCNMAP, &nmap) == 0) | |
a39ad5ce | 2856 | { |
cc221e76 FF |
2857 | prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps)); |
2858 | if (ioctl (pip -> fd, PIOCMAP, prmaps) == 0) | |
a39ad5ce | 2859 | { |
cc221e76 FF |
2860 | for (prmap = prmaps; prmap -> pr_size; ++prmap) |
2861 | { | |
5c1c5e67 | 2862 | printf_filtered ("\t%#10x %#10x %#10x %#10x %7s\n", |
cc221e76 FF |
2863 | prmap -> pr_vaddr, |
2864 | prmap -> pr_vaddr + prmap -> pr_size - 1, | |
2865 | prmap -> pr_size, | |
2866 | prmap -> pr_off, | |
2867 | mappingflags (prmap -> pr_mflags)); | |
2868 | } | |
a39ad5ce FF |
2869 | } |
2870 | } | |
cc221e76 | 2871 | printf_filtered ("\n"); |
a39ad5ce | 2872 | } |
a39ad5ce FF |
2873 | } |
2874 | ||
2875 | /* | |
2876 | ||
2877 | LOCAL FUNCTION | |
2878 | ||
cc221e76 | 2879 | info_proc -- implement the "info proc" command |
a39ad5ce FF |
2880 | |
2881 | SYNOPSIS | |
2882 | ||
cc221e76 | 2883 | void info_proc (char *args, int from_tty) |
a39ad5ce FF |
2884 | |
2885 | DESCRIPTION | |
2886 | ||
2887 | Implement gdb's "info proc" command by using the /proc interface | |
2888 | to print status information about any currently running process. | |
2889 | ||
2890 | Examples of the use of "info proc" are: | |
2891 | ||
cc221e76 FF |
2892 | info proc (prints summary info for current inferior) |
2893 | info proc 123 (prints summary info for process with pid 123) | |
2894 | info proc mappings (prints address mappings) | |
2895 | info proc times (prints process/children times) | |
2896 | info proc id (prints pid, ppid, gid, sid, etc) | |
3fbdd536 | 2897 | FIXME: i proc id not implemented. |
cc221e76 | 2898 | info proc status (prints general process state info) |
3fbdd536 | 2899 | FIXME: i proc status not implemented. |
cc221e76 FF |
2900 | info proc signals (prints info about signal handling) |
2901 | info proc all (prints all info) | |
a39ad5ce FF |
2902 | |
2903 | */ | |
2904 | ||
2905 | static void | |
cc221e76 | 2906 | info_proc (args, from_tty) |
1ab3bf1b JG |
2907 | char *args; |
2908 | int from_tty; | |
a39ad5ce | 2909 | { |
a39ad5ce FF |
2910 | int pid; |
2911 | struct procinfo pii; | |
2912 | struct procinfo *pip; | |
2913 | struct cleanup *old_chain; | |
cc221e76 FF |
2914 | char **argv; |
2915 | int argsize; | |
2916 | int summary = 1; | |
2917 | int flags = 0; | |
2918 | int syscalls = 0; | |
2919 | int signals = 0; | |
2920 | int faults = 0; | |
2921 | int mappings = 0; | |
2922 | int times = 0; | |
2923 | int id = 0; | |
2924 | int status = 0; | |
2925 | int all = 0; | |
a39ad5ce FF |
2926 | |
2927 | old_chain = make_cleanup (null_cleanup, 0); | |
2928 | ||
2929 | /* Default to using the current inferior if no pid specified */ | |
2930 | ||
2931 | pip = π | |
2932 | ||
a39ad5ce | 2933 | if (args != NULL) |
35f5886e | 2934 | { |
cc221e76 | 2935 | if ((argv = buildargv (args)) == NULL) |
a39ad5ce | 2936 | { |
cc221e76 FF |
2937 | nomem (0); |
2938 | } | |
2939 | make_cleanup (freeargv, (char *) argv); | |
2940 | ||
2941 | while (*argv != NULL) | |
2942 | { | |
2943 | argsize = strlen (*argv); | |
2944 | if (argsize >= 1 && strncmp (*argv, "all", argsize) == 0) | |
2945 | { | |
2946 | summary = 0; | |
2947 | all = 1; | |
2948 | } | |
2949 | else if (argsize >= 2 && strncmp (*argv, "faults", argsize) == 0) | |
2950 | { | |
2951 | summary = 0; | |
2952 | faults = 1; | |
2953 | } | |
2954 | else if (argsize >= 2 && strncmp (*argv, "flags", argsize) == 0) | |
2955 | { | |
2956 | summary = 0; | |
2957 | flags = 1; | |
2958 | } | |
2959 | else if (argsize >= 1 && strncmp (*argv, "id", argsize) == 0) | |
2960 | { | |
2961 | summary = 0; | |
2962 | id = 1; | |
2963 | } | |
2964 | else if (argsize >= 1 && strncmp (*argv, "mappings", argsize) == 0) | |
2965 | { | |
2966 | summary = 0; | |
2967 | mappings = 1; | |
2968 | } | |
2969 | else if (argsize >= 2 && strncmp (*argv, "signals", argsize) == 0) | |
2970 | { | |
2971 | summary = 0; | |
2972 | signals = 1; | |
2973 | } | |
2974 | else if (argsize >= 2 && strncmp (*argv, "status", argsize) == 0) | |
2975 | { | |
2976 | summary = 0; | |
2977 | status = 1; | |
2978 | } | |
2979 | else if (argsize >= 2 && strncmp (*argv, "syscalls", argsize) == 0) | |
2980 | { | |
2981 | summary = 0; | |
2982 | syscalls = 1; | |
2983 | } | |
2984 | else if (argsize >= 1 && strncmp (*argv, "times", argsize) == 0) | |
a39ad5ce | 2985 | { |
cc221e76 FF |
2986 | summary = 0; |
2987 | times = 1; | |
a39ad5ce | 2988 | } |
cc221e76 | 2989 | else if ((pii.pid = atoi (*argv)) > 0) |
a39ad5ce FF |
2990 | { |
2991 | pid = pii.pid; | |
2992 | pip = &pii; | |
4ed3a9ea | 2993 | memset (&pii, 0, sizeof (pii)); |
ec8ceca3 | 2994 | if (!open_proc_file (pid, pip, O_RDONLY)) |
a39ad5ce FF |
2995 | { |
2996 | perror_with_name (pip -> pathname); | |
2997 | /* NOTREACHED */ | |
2998 | } | |
2999 | make_cleanup (close_proc_file, pip); | |
3000 | } | |
cc221e76 FF |
3001 | else if (**argv != '\000') |
3002 | { | |
3003 | error ("Unrecognized or ambiguous keyword `%s'.", *argv); | |
3004 | } | |
3005 | argv++; | |
a39ad5ce | 3006 | } |
35f5886e | 3007 | } |
a39ad5ce FF |
3008 | |
3009 | /* If we don't have a valid open process at this point, then we have no | |
3010 | inferior or didn't specify a specific pid. */ | |
3011 | ||
3012 | if (!pip -> valid) | |
35f5886e | 3013 | { |
a39ad5ce | 3014 | error ("No process. Run an inferior or specify an explicit pid."); |
35f5886e | 3015 | } |
a39ad5ce | 3016 | if (ioctl (pip -> fd, PIOCSTATUS, &(pip -> prstatus)) < 0) |
35f5886e | 3017 | { |
a39ad5ce FF |
3018 | print_sys_errmsg (pip -> pathname, errno); |
3019 | error ("PIOCSTATUS failed"); | |
35f5886e | 3020 | } |
a39ad5ce | 3021 | |
cc221e76 FF |
3022 | /* Print verbose information of the requested type(s), or just a summary |
3023 | of the information for all types. */ | |
3024 | ||
3025 | printf_filtered ("\nInformation for %s:\n\n", pip -> pathname); | |
3026 | if (summary || all || flags) | |
3027 | { | |
3028 | info_proc_flags (pip, summary); | |
3029 | } | |
3030 | if (summary || all) | |
3031 | { | |
3032 | info_proc_stop (pip, summary); | |
3033 | } | |
3034 | if (summary || all || signals || faults) | |
3035 | { | |
3036 | info_proc_siginfo (pip, summary); | |
3037 | } | |
3038 | if (summary || all || syscalls) | |
3039 | { | |
3040 | info_proc_syscalls (pip, summary); | |
3041 | } | |
3042 | if (summary || all || mappings) | |
3043 | { | |
3044 | info_proc_mappings (pip, summary); | |
3045 | } | |
3046 | if (summary || all || signals) | |
3047 | { | |
3048 | info_proc_signals (pip, summary); | |
3049 | } | |
3050 | if (summary || all || faults) | |
3051 | { | |
3052 | info_proc_faults (pip, summary); | |
3053 | } | |
3054 | printf_filtered ("\n"); | |
a39ad5ce FF |
3055 | |
3056 | /* All done, deal with closing any temporary process info structure, | |
3057 | freeing temporary memory , etc. */ | |
3058 | ||
3059 | do_cleanups (old_chain); | |
3060 | } | |
3061 | ||
3fbdd536 JG |
3062 | /* Fork an inferior process, and start debugging it with /proc. */ |
3063 | ||
3064 | static void | |
3065 | procfs_create_inferior (exec_file, allargs, env) | |
3066 | char *exec_file; | |
3067 | char *allargs; | |
3068 | char **env; | |
3069 | { | |
3070 | fork_inferior (exec_file, allargs, env, | |
3071 | proc_set_exec_trap, procfs_init_inferior); | |
3072 | /* We are at the first instruction we care about. */ | |
3073 | /* Pedal to the metal... */ | |
3074 | proceed ((CORE_ADDR) -1, 0, 0); | |
3075 | } | |
3076 | ||
3077 | /* Clean up after the inferior dies. */ | |
3078 | ||
3079 | static void | |
3080 | procfs_mourn_inferior () | |
3081 | { | |
3082 | unpush_target (&procfs_ops); | |
3083 | generic_mourn_inferior (); | |
3084 | } | |
3085 | ||
3086 | /* Mark our target-struct as eligible for stray "run" and "attach" commands. */ | |
3087 | static int | |
3088 | procfs_can_run () | |
3089 | { | |
3090 | return(1); | |
3091 | } | |
3092 | \f | |
3093 | struct target_ops procfs_ops = { | |
3094 | "procfs", /* to_shortname */ | |
3095 | "Unix /proc child process", /* to_longname */ | |
3096 | "Unix /proc child process (started by the \"run\" command).", /* to_doc */ | |
3097 | procfs_open, /* to_open */ | |
3098 | 0, /* to_close */ | |
3099 | procfs_attach, /* to_attach */ | |
3100 | procfs_detach, /* to_detach */ | |
3101 | procfs_resume, /* to_resume */ | |
3102 | procfs_wait, /* to_wait */ | |
3103 | procfs_fetch_registers, /* to_fetch_registers */ | |
3104 | procfs_store_registers, /* to_store_registers */ | |
3105 | procfs_prepare_to_store, /* to_prepare_to_store */ | |
3106 | procfs_xfer_memory, /* to_xfer_memory */ | |
3107 | procfs_files_info, /* to_files_info */ | |
3108 | memory_insert_breakpoint, /* to_insert_breakpoint */ | |
3109 | memory_remove_breakpoint, /* to_remove_breakpoint */ | |
3110 | terminal_init_inferior, /* to_terminal_init */ | |
3111 | terminal_inferior, /* to_terminal_inferior */ | |
3112 | terminal_ours_for_output, /* to_terminal_ours_for_output */ | |
3113 | terminal_ours, /* to_terminal_ours */ | |
3114 | child_terminal_info, /* to_terminal_info */ | |
3115 | procfs_kill_inferior, /* to_kill */ | |
3116 | 0, /* to_load */ | |
3117 | 0, /* to_lookup_symbol */ | |
3118 | procfs_create_inferior, /* to_create_inferior */ | |
3119 | procfs_mourn_inferior, /* to_mourn_inferior */ | |
3120 | procfs_can_run, /* to_can_run */ | |
3121 | process_stratum, /* to_stratum */ | |
3122 | 0, /* to_next */ | |
3123 | 1, /* to_has_all_memory */ | |
3124 | 1, /* to_has_memory */ | |
3125 | 1, /* to_has_stack */ | |
3126 | 1, /* to_has_registers */ | |
3127 | 1, /* to_has_execution */ | |
3128 | 0, /* sections */ | |
3129 | 0, /* sections_end */ | |
3130 | OPS_MAGIC /* to_magic */ | |
3131 | }; | |
3132 | ||
a39ad5ce FF |
3133 | /* |
3134 | ||
3135 | GLOBAL FUNCTION | |
3136 | ||
3fbdd536 | 3137 | _initialize_procfs -- initialize the process file system stuff |
a39ad5ce FF |
3138 | |
3139 | SYNOPSIS | |
3140 | ||
3fbdd536 | 3141 | void _initialize_procfs (void) |
a39ad5ce FF |
3142 | |
3143 | DESCRIPTION | |
3144 | ||
3145 | Do required initializations during gdb startup for using the | |
3146 | /proc file system interface. | |
3147 | ||
3148 | */ | |
3149 | ||
3fbdd536 JG |
3150 | void |
3151 | _initialize_procfs () | |
3152 | { | |
3153 | add_target (&procfs_ops); | |
3154 | ||
3155 | add_info ("proc", info_proc, | |
cc221e76 FF |
3156 | "Show process status information using /proc entry.\n\ |
3157 | Specify process id or use current inferior by default.\n\ | |
3158 | Specify keywords for detailed information; default is summary.\n\ | |
3159 | Keywords are: `all', `faults', `flags', `id', `mappings', `signals',\n\ | |
3160 | `status', `syscalls', and `times'.\n\ | |
3fbdd536 | 3161 | Unambiguous abbreviations may be used."); |
a39ad5ce | 3162 | |
cc221e76 | 3163 | init_syscall_table (); |
35f5886e | 3164 | } |