Commit | Line | Data |
---|---|---|
35f5886e | 1 | /* Machine independent support for SVR4 /proc (process file system) for GDB. |
234a732d GN |
2 | Copyright 1991, 1992-96, 1997 Free Software Foundation, Inc. |
3 | Written by Fred Fish at Cygnus Support. Changes for sysv4.2mp procfs | |
4 | compatibility by Geoffrey Noer at Cygnus Solutions. | |
35f5886e FF |
5 | |
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
6c9638b4 | 20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
35f5886e FF |
21 | |
22 | ||
23 | /* N O T E S | |
24 | ||
25 | For information on the details of using /proc consult section proc(4) | |
26 | in the UNIX System V Release 4 System Administrator's Reference Manual. | |
27 | ||
234a732d GN |
28 | The general register and floating point register sets are manipulated |
29 | separately. This file makes the assumption that if FP0_REGNUM is | |
35f5886e FF |
30 | defined, then support for the floating point register set is desired, |
31 | regardless of whether or not the actual target has floating point hardware. | |
32 | ||
33 | */ | |
34 | ||
35 | ||
5129100c | 36 | #include "defs.h" |
35f5886e | 37 | |
08f74b92 | 38 | #include <sys/types.h> |
407a8389 | 39 | #include <time.h> |
2592eef8 PS |
40 | #include <sys/fault.h> |
41 | #include <sys/syscall.h> | |
35f5886e FF |
42 | #include <sys/procfs.h> |
43 | #include <fcntl.h> | |
44 | #include <errno.h> | |
2b576293 | 45 | #include "gdb_string.h" |
de43d7d0 SG |
46 | #include <stropts.h> |
47 | #include <poll.h> | |
08f74b92 | 48 | #include <unistd.h> |
2b576293 | 49 | #include "gdb_stat.h" |
35f5886e | 50 | |
35f5886e FF |
51 | #include "inferior.h" |
52 | #include "target.h" | |
51b57ded | 53 | #include "command.h" |
3fbdd536 | 54 | #include "gdbcore.h" |
fdfa3315 | 55 | #include "gdbthread.h" |
cc221e76 | 56 | |
234a732d GN |
57 | /* the name of the proc status struct depends on the implementation */ |
58 | #ifdef HAVE_PSTATUS_T | |
59 | typedef pstatus_t gdb_prstatus_t; | |
60 | #else | |
61 | typedef prstatus_t gdb_prstatus_t; | |
62 | #endif | |
63 | ||
cc221e76 | 64 | #define MAX_SYSCALLS 256 /* Maximum number of syscalls for table */ |
35f5886e | 65 | |
234a732d GN |
66 | /* proc name formats may vary depending on the proc implementation */ |
67 | #ifdef HAVE_MULTIPLE_PROC_FDS | |
95b71071 PS |
68 | # ifndef CTL_PROC_NAME_FMT |
69 | # define CTL_PROC_NAME_FMT "/proc/%d/ctl" | |
70 | # define AS_PROC_NAME_FMT "/proc/%d/as" | |
71 | # define MAP_PROC_NAME_FMT "/proc/%d/map" | |
72 | # define STATUS_PROC_NAME_FMT "/proc/%d/status" | |
73 | # endif | |
234a732d | 74 | #else /* HAVE_MULTIPLE_PROC_FDS */ |
95b71071 PS |
75 | # ifndef CTL_PROC_NAME_FMT |
76 | # define CTL_PROC_NAME_FMT "/proc/%05d" | |
77 | # define AS_PROC_NAME_FMT "/proc/%05d" | |
78 | # define MAP_PROC_NAME_FMT "/proc/%05d" | |
79 | # define STATUS_PROC_NAME_FMT "/proc/%05d" | |
80 | # endif | |
234a732d GN |
81 | #endif /* HAVE_MULTIPLE_PROC_FDS */ |
82 | ||
83 | #define MAX_PROC_NAME_SIZE sizeof("/proc/1234567890/status") | |
35f5886e | 84 | |
3fbdd536 JG |
85 | extern struct target_ops procfs_ops; /* Forward declaration */ |
86 | ||
8fc2b417 SG |
87 | int procfs_suppress_run = 0; /* Non-zero if procfs should pretend not to |
88 | be a runnable target. Used by targets | |
89 | that can sit atop procfs, such as solaris | |
90 | thread support. */ | |
91 | ||
35f5886e FF |
92 | #if 1 /* FIXME: Gross and ugly hack to resolve coredep.c global */ |
93 | CORE_ADDR kernel_u_addr; | |
94 | #endif | |
95 | ||
cc221e76 FF |
96 | #ifdef BROKEN_SIGINFO_H /* Workaround broken SGS <sys/siginfo.h> */ |
97 | #undef si_pid | |
98 | #define si_pid _data._proc.pid | |
99 | #undef si_uid | |
100 | #define si_uid _data._proc._pdata._kill.uid | |
101 | #endif /* BROKEN_SIGINFO_H */ | |
102 | ||
234a732d GN |
103 | /* Define structures for passing commands to /proc/pid/ctl file. Note that |
104 | while we create these for the PROCFS_USE_READ_WRITE world, we use them | |
105 | and ignore the extra cmd int in other proc schemes. | |
106 | */ | |
107 | /* generic ctl msg */ | |
108 | struct proc_ctl { | |
109 | int cmd; | |
110 | long data; | |
111 | }; | |
112 | ||
113 | /* set general registers */ | |
114 | struct greg_ctl { | |
115 | int cmd; | |
116 | gregset_t gregset; | |
117 | }; | |
118 | ||
119 | /* set fp registers */ | |
120 | struct fpreg_ctl { | |
121 | int cmd; | |
122 | fpregset_t fpregset; | |
123 | }; | |
124 | ||
125 | /* set signals to be traced */ | |
126 | struct sig_ctl { | |
127 | int cmd; | |
128 | sigset_t sigset; | |
129 | }; | |
130 | ||
131 | /* set faults to be traced */ | |
132 | struct flt_ctl { | |
133 | int cmd; | |
134 | fltset_t fltset; | |
135 | }; | |
136 | ||
137 | /* set system calls to be traced */ | |
138 | struct sys_ctl { | |
139 | int cmd; | |
140 | sysset_t sysset; | |
141 | }; | |
142 | ||
143 | /* set current signal to be traced */ | |
144 | struct sigi_ctl { | |
145 | int cmd; | |
146 | siginfo_t siginfo; | |
147 | }; | |
148 | ||
35f5886e FF |
149 | /* All access to the inferior, either one started by gdb or one that has |
150 | been attached to, is controlled by an instance of a procinfo structure, | |
151 | defined below. Since gdb currently only handles one inferior at a time, | |
a39ad5ce FF |
152 | the procinfo structure for the inferior is statically allocated and |
153 | only one exists at any given time. There is a separate procinfo | |
154 | structure for use by the "info proc" command, so that we can print | |
155 | useful information about any random process without interfering with | |
156 | the inferior's procinfo information. */ | |
35f5886e FF |
157 | |
158 | struct procinfo { | |
de43d7d0 | 159 | struct procinfo *next; |
35f5886e | 160 | int pid; /* Process ID of inferior */ |
234a732d GN |
161 | int ctl_fd; /* File descriptor for /proc ctl file */ |
162 | int status_fd; /* File descriptor for /proc status file */ | |
163 | int as_fd; /* File descriptor for /proc as file */ | |
164 | int map_fd; /* File descriptor for /proc map file */ | |
35f5886e | 165 | char *pathname; /* Pathname to /proc entry */ |
de43d7d0 | 166 | int had_event; /* poll/select says something happened */ |
35f5886e | 167 | int was_stopped; /* Nonzero if was stopped prior to attach */ |
d65eee73 | 168 | int nopass_next_sigstop; /* Don't pass a sigstop on next resume */ |
234a732d | 169 | #ifndef HAVE_NO_PRRUN_T |
35f5886e | 170 | prrun_t prrun; /* Control state when it is run */ |
234a732d GN |
171 | #endif |
172 | gdb_prstatus_t prstatus; /* Current process status info */ | |
173 | struct greg_ctl gregset; /* General register set */ | |
174 | struct fpreg_ctl fpregset; /* Floating point register set */ | |
175 | struct flt_ctl fltset; /* Current traced hardware fault set */ | |
176 | struct sig_ctl trace; /* Current traced signal set */ | |
177 | struct sys_ctl exitset; /* Current traced system call exit set */ | |
178 | struct sys_ctl entryset; /* Current traced system call entry set */ | |
179 | struct sig_ctl saved_sighold; /* Saved held signal set */ | |
180 | struct flt_ctl saved_fltset; /* Saved traced hardware fault set */ | |
181 | struct sig_ctl saved_trace; /* Saved traced signal set */ | |
182 | struct sys_ctl saved_exitset; /* Saved traced system call exit set */ | |
183 | struct sys_ctl saved_entryset;/* Saved traced system call entry set */ | |
3780c337 MS |
184 | int num_syscall_handlers; /* Number of syscall trap handlers |
185 | currently installed */ | |
186 | /* Pointer to list of syscall trap handlers */ | |
187 | struct procfs_syscall_handler *syscall_handlers; | |
8fc2b417 | 188 | int new_child; /* Non-zero if it's a new thread */ |
a39ad5ce FF |
189 | }; |
190 | ||
de43d7d0 SG |
191 | /* List of inferior process information */ |
192 | static struct procinfo *procinfo_list = NULL; | |
de43d7d0 SG |
193 | static struct pollfd *poll_list; /* pollfds used for waiting on /proc */ |
194 | ||
195 | static int num_poll_list = 0; /* Number of entries in poll_list */ | |
196 | ||
cc221e76 FF |
197 | /* Much of the information used in the /proc interface, particularly for |
198 | printing status information, is kept as tables of structures of the | |
199 | following form. These tables can be used to map numeric values to | |
200 | their symbolic names and to a string that describes their specific use. */ | |
201 | ||
202 | struct trans { | |
203 | int value; /* The numeric value */ | |
204 | char *name; /* The equivalent symbolic value */ | |
205 | char *desc; /* Short description of value */ | |
206 | }; | |
207 | ||
208 | /* Translate bits in the pr_flags member of the prstatus structure, into the | |
209 | names and desc information. */ | |
210 | ||
211 | static struct trans pr_flag_table[] = | |
212 | { | |
213 | #if defined (PR_STOPPED) | |
e3be225e | 214 | { PR_STOPPED, "PR_STOPPED", "Process is stopped" }, |
cc221e76 FF |
215 | #endif |
216 | #if defined (PR_ISTOP) | |
e3be225e | 217 | { PR_ISTOP, "PR_ISTOP", "Stopped on an event of interest" }, |
cc221e76 FF |
218 | #endif |
219 | #if defined (PR_DSTOP) | |
e3be225e | 220 | { PR_DSTOP, "PR_DSTOP", "A stop directive is in effect" }, |
cc221e76 FF |
221 | #endif |
222 | #if defined (PR_ASLEEP) | |
e3be225e | 223 | { PR_ASLEEP, "PR_ASLEEP", "Sleeping in an interruptible system call" }, |
cc221e76 FF |
224 | #endif |
225 | #if defined (PR_FORK) | |
e3be225e | 226 | { PR_FORK, "PR_FORK", "Inherit-on-fork is in effect" }, |
cc221e76 FF |
227 | #endif |
228 | #if defined (PR_RLC) | |
e3be225e | 229 | { PR_RLC, "PR_RLC", "Run-on-last-close is in effect" }, |
cc221e76 FF |
230 | #endif |
231 | #if defined (PR_PTRACE) | |
e3be225e | 232 | { PR_PTRACE, "PR_PTRACE", "Process is being controlled by ptrace" }, |
cc221e76 FF |
233 | #endif |
234 | #if defined (PR_PCINVAL) | |
e3be225e | 235 | { PR_PCINVAL, "PR_PCINVAL", "PC refers to an invalid virtual address" }, |
cc221e76 FF |
236 | #endif |
237 | #if defined (PR_ISSYS) | |
e3be225e | 238 | { PR_ISSYS, "PR_ISSYS", "Is a system process" }, |
5c1c5e67 FF |
239 | #endif |
240 | #if defined (PR_STEP) | |
e3be225e | 241 | { PR_STEP, "PR_STEP", "Process has single step pending" }, |
5c1c5e67 FF |
242 | #endif |
243 | #if defined (PR_KLC) | |
e3be225e | 244 | { PR_KLC, "PR_KLC", "Kill-on-last-close is in effect" }, |
5c1c5e67 FF |
245 | #endif |
246 | #if defined (PR_ASYNC) | |
e3be225e | 247 | { PR_ASYNC, "PR_ASYNC", "Asynchronous stop is in effect" }, |
5c1c5e67 FF |
248 | #endif |
249 | #if defined (PR_PCOMPAT) | |
e3be225e | 250 | { PR_PCOMPAT, "PR_PCOMPAT", "Ptrace compatibility mode in effect" }, |
3780c337 MS |
251 | #endif |
252 | #if defined (PR_MSACCT) | |
253 | { PR_MSACCT, "PR_MSACCT", "Microstate accounting enabled" }, | |
254 | #endif | |
255 | #if defined (PR_BPTADJ) | |
256 | { PR_BPTADJ, "PR_BPTADJ", "Breakpoint PC adjustment in effect" }, | |
257 | #endif | |
258 | #if defined (PR_ASLWP) | |
259 | { PR_ASLWP, "PR_ASLWP", "Asynchronus signal LWP" }, | |
cc221e76 | 260 | #endif |
e3be225e | 261 | { 0, NULL, NULL } |
cc221e76 FF |
262 | }; |
263 | ||
264 | /* Translate values in the pr_why field of the prstatus struct. */ | |
265 | ||
266 | static struct trans pr_why_table[] = | |
267 | { | |
268 | #if defined (PR_REQUESTED) | |
e3be225e | 269 | { PR_REQUESTED, "PR_REQUESTED", "Directed to stop via PIOCSTOP/PIOCWSTOP" }, |
cc221e76 FF |
270 | #endif |
271 | #if defined (PR_SIGNALLED) | |
e3be225e | 272 | { PR_SIGNALLED, "PR_SIGNALLED", "Receipt of a traced signal" }, |
cc221e76 | 273 | #endif |
cc221e76 | 274 | #if defined (PR_SYSENTRY) |
e3be225e | 275 | { PR_SYSENTRY, "PR_SYSENTRY", "Entry to a traced system call" }, |
cc221e76 FF |
276 | #endif |
277 | #if defined (PR_SYSEXIT) | |
e3be225e | 278 | { PR_SYSEXIT, "PR_SYSEXIT", "Exit from a traced system call" }, |
cc221e76 FF |
279 | #endif |
280 | #if defined (PR_JOBCONTROL) | |
e3be225e | 281 | { PR_JOBCONTROL, "PR_JOBCONTROL", "Default job control stop signal action" }, |
5c1c5e67 | 282 | #endif |
3780c337 MS |
283 | #if defined (PR_FAULTED) |
284 | { PR_FAULTED, "PR_FAULTED", "Incurred a traced hardware fault" }, | |
285 | #endif | |
5c1c5e67 | 286 | #if defined (PR_SUSPENDED) |
e3be225e | 287 | { PR_SUSPENDED, "PR_SUSPENDED", "Process suspended" }, |
3780c337 MS |
288 | #endif |
289 | #if defined (PR_CHECKPOINT) | |
290 | { PR_CHECKPOINT, "PR_CHECKPOINT", "(???)" }, | |
cc221e76 | 291 | #endif |
e3be225e | 292 | { 0, NULL, NULL } |
cc221e76 FF |
293 | }; |
294 | ||
295 | /* Hardware fault translation table. */ | |
296 | ||
297 | static struct trans faults_table[] = | |
298 | { | |
299 | #if defined (FLTILL) | |
e3be225e | 300 | { FLTILL, "FLTILL", "Illegal instruction" }, |
cc221e76 FF |
301 | #endif |
302 | #if defined (FLTPRIV) | |
e3be225e | 303 | { FLTPRIV, "FLTPRIV", "Privileged instruction" }, |
cc221e76 FF |
304 | #endif |
305 | #if defined (FLTBPT) | |
e3be225e | 306 | { FLTBPT, "FLTBPT", "Breakpoint trap" }, |
cc221e76 FF |
307 | #endif |
308 | #if defined (FLTTRACE) | |
e3be225e | 309 | { FLTTRACE, "FLTTRACE", "Trace trap" }, |
cc221e76 FF |
310 | #endif |
311 | #if defined (FLTACCESS) | |
e3be225e | 312 | { FLTACCESS, "FLTACCESS", "Memory access fault" }, |
cc221e76 FF |
313 | #endif |
314 | #if defined (FLTBOUNDS) | |
e3be225e | 315 | { FLTBOUNDS, "FLTBOUNDS", "Memory bounds violation" }, |
cc221e76 FF |
316 | #endif |
317 | #if defined (FLTIOVF) | |
e3be225e | 318 | { FLTIOVF, "FLTIOVF", "Integer overflow" }, |
cc221e76 FF |
319 | #endif |
320 | #if defined (FLTIZDIV) | |
e3be225e | 321 | { FLTIZDIV, "FLTIZDIV", "Integer zero divide" }, |
cc221e76 FF |
322 | #endif |
323 | #if defined (FLTFPE) | |
e3be225e | 324 | { FLTFPE, "FLTFPE", "Floating-point exception" }, |
cc221e76 FF |
325 | #endif |
326 | #if defined (FLTSTACK) | |
e3be225e | 327 | { FLTSTACK, "FLTSTACK", "Unrecoverable stack fault" }, |
cc221e76 FF |
328 | #endif |
329 | #if defined (FLTPAGE) | |
e3be225e | 330 | { FLTPAGE, "FLTPAGE", "Recoverable page fault" }, |
cc221e76 | 331 | #endif |
e3be225e | 332 | { 0, NULL, NULL } |
cc221e76 FF |
333 | }; |
334 | ||
335 | /* Translation table for signal generation information. See UNIX System | |
336 | V Release 4 Programmer's Reference Manual, siginfo(5). */ | |
337 | ||
338 | static struct sigcode { | |
339 | int signo; | |
340 | int code; | |
341 | char *codename; | |
342 | char *desc; | |
343 | } siginfo_table[] = { | |
344 | #if defined (SIGILL) && defined (ILL_ILLOPC) | |
e3be225e | 345 | { SIGILL, ILL_ILLOPC, "ILL_ILLOPC", "Illegal opcode" }, |
cc221e76 FF |
346 | #endif |
347 | #if defined (SIGILL) && defined (ILL_ILLOPN) | |
e3be225e | 348 | { SIGILL, ILL_ILLOPN, "ILL_ILLOPN", "Illegal operand", }, |
cc221e76 FF |
349 | #endif |
350 | #if defined (SIGILL) && defined (ILL_ILLADR) | |
e3be225e | 351 | { SIGILL, ILL_ILLADR, "ILL_ILLADR", "Illegal addressing mode" }, |
cc221e76 FF |
352 | #endif |
353 | #if defined (SIGILL) && defined (ILL_ILLTRP) | |
e3be225e | 354 | { SIGILL, ILL_ILLTRP, "ILL_ILLTRP", "Illegal trap" }, |
cc221e76 FF |
355 | #endif |
356 | #if defined (SIGILL) && defined (ILL_PRVOPC) | |
e3be225e | 357 | { SIGILL, ILL_PRVOPC, "ILL_PRVOPC", "Privileged opcode" }, |
cc221e76 FF |
358 | #endif |
359 | #if defined (SIGILL) && defined (ILL_PRVREG) | |
e3be225e | 360 | { SIGILL, ILL_PRVREG, "ILL_PRVREG", "Privileged register" }, |
cc221e76 FF |
361 | #endif |
362 | #if defined (SIGILL) && defined (ILL_COPROC) | |
e3be225e | 363 | { SIGILL, ILL_COPROC, "ILL_COPROC", "Coprocessor error" }, |
cc221e76 FF |
364 | #endif |
365 | #if defined (SIGILL) && defined (ILL_BADSTK) | |
e3be225e | 366 | { SIGILL, ILL_BADSTK, "ILL_BADSTK", "Internal stack error" }, |
cc221e76 FF |
367 | #endif |
368 | #if defined (SIGFPE) && defined (FPE_INTDIV) | |
e3be225e | 369 | { SIGFPE, FPE_INTDIV, "FPE_INTDIV", "Integer divide by zero" }, |
cc221e76 FF |
370 | #endif |
371 | #if defined (SIGFPE) && defined (FPE_INTOVF) | |
e3be225e | 372 | { SIGFPE, FPE_INTOVF, "FPE_INTOVF", "Integer overflow" }, |
cc221e76 FF |
373 | #endif |
374 | #if defined (SIGFPE) && defined (FPE_FLTDIV) | |
e3be225e | 375 | { SIGFPE, FPE_FLTDIV, "FPE_FLTDIV", "Floating point divide by zero" }, |
cc221e76 FF |
376 | #endif |
377 | #if defined (SIGFPE) && defined (FPE_FLTOVF) | |
e3be225e | 378 | { SIGFPE, FPE_FLTOVF, "FPE_FLTOVF", "Floating point overflow" }, |
cc221e76 FF |
379 | #endif |
380 | #if defined (SIGFPE) && defined (FPE_FLTUND) | |
e3be225e | 381 | { SIGFPE, FPE_FLTUND, "FPE_FLTUND", "Floating point underflow" }, |
cc221e76 FF |
382 | #endif |
383 | #if defined (SIGFPE) && defined (FPE_FLTRES) | |
e3be225e | 384 | { SIGFPE, FPE_FLTRES, "FPE_FLTRES", "Floating point inexact result" }, |
cc221e76 FF |
385 | #endif |
386 | #if defined (SIGFPE) && defined (FPE_FLTINV) | |
e3be225e | 387 | { SIGFPE, FPE_FLTINV, "FPE_FLTINV", "Invalid floating point operation" }, |
cc221e76 FF |
388 | #endif |
389 | #if defined (SIGFPE) && defined (FPE_FLTSUB) | |
e3be225e | 390 | { SIGFPE, FPE_FLTSUB, "FPE_FLTSUB", "Subscript out of range" }, |
cc221e76 FF |
391 | #endif |
392 | #if defined (SIGSEGV) && defined (SEGV_MAPERR) | |
e3be225e | 393 | { SIGSEGV, SEGV_MAPERR, "SEGV_MAPERR", "Address not mapped to object" }, |
cc221e76 FF |
394 | #endif |
395 | #if defined (SIGSEGV) && defined (SEGV_ACCERR) | |
e3be225e | 396 | { SIGSEGV, SEGV_ACCERR, "SEGV_ACCERR", "Invalid permissions for object" }, |
cc221e76 FF |
397 | #endif |
398 | #if defined (SIGBUS) && defined (BUS_ADRALN) | |
e3be225e | 399 | { SIGBUS, BUS_ADRALN, "BUS_ADRALN", "Invalid address alignment" }, |
cc221e76 FF |
400 | #endif |
401 | #if defined (SIGBUS) && defined (BUS_ADRERR) | |
e3be225e | 402 | { SIGBUS, BUS_ADRERR, "BUS_ADRERR", "Non-existent physical address" }, |
cc221e76 FF |
403 | #endif |
404 | #if defined (SIGBUS) && defined (BUS_OBJERR) | |
e3be225e | 405 | { SIGBUS, BUS_OBJERR, "BUS_OBJERR", "Object specific hardware error" }, |
cc221e76 FF |
406 | #endif |
407 | #if defined (SIGTRAP) && defined (TRAP_BRKPT) | |
e3be225e | 408 | { SIGTRAP, TRAP_BRKPT, "TRAP_BRKPT", "Process breakpoint" }, |
cc221e76 FF |
409 | #endif |
410 | #if defined (SIGTRAP) && defined (TRAP_TRACE) | |
e3be225e | 411 | { SIGTRAP, TRAP_TRACE, "TRAP_TRACE", "Process trace trap" }, |
cc221e76 FF |
412 | #endif |
413 | #if defined (SIGCLD) && defined (CLD_EXITED) | |
e3be225e | 414 | { SIGCLD, CLD_EXITED, "CLD_EXITED", "Child has exited" }, |
cc221e76 FF |
415 | #endif |
416 | #if defined (SIGCLD) && defined (CLD_KILLED) | |
e3be225e | 417 | { SIGCLD, CLD_KILLED, "CLD_KILLED", "Child was killed" }, |
cc221e76 FF |
418 | #endif |
419 | #if defined (SIGCLD) && defined (CLD_DUMPED) | |
e3be225e | 420 | { SIGCLD, CLD_DUMPED, "CLD_DUMPED", "Child has terminated abnormally" }, |
cc221e76 FF |
421 | #endif |
422 | #if defined (SIGCLD) && defined (CLD_TRAPPED) | |
e3be225e | 423 | { SIGCLD, CLD_TRAPPED, "CLD_TRAPPED", "Traced child has trapped" }, |
cc221e76 FF |
424 | #endif |
425 | #if defined (SIGCLD) && defined (CLD_STOPPED) | |
e3be225e | 426 | { SIGCLD, CLD_STOPPED, "CLD_STOPPED", "Child has stopped" }, |
cc221e76 FF |
427 | #endif |
428 | #if defined (SIGCLD) && defined (CLD_CONTINUED) | |
e3be225e | 429 | { SIGCLD, CLD_CONTINUED, "CLD_CONTINUED", "Stopped child had continued" }, |
cc221e76 FF |
430 | #endif |
431 | #if defined (SIGPOLL) && defined (POLL_IN) | |
e3be225e | 432 | { SIGPOLL, POLL_IN, "POLL_IN", "Input input available" }, |
cc221e76 FF |
433 | #endif |
434 | #if defined (SIGPOLL) && defined (POLL_OUT) | |
e3be225e | 435 | { SIGPOLL, POLL_OUT, "POLL_OUT", "Output buffers available" }, |
cc221e76 FF |
436 | #endif |
437 | #if defined (SIGPOLL) && defined (POLL_MSG) | |
e3be225e | 438 | { SIGPOLL, POLL_MSG, "POLL_MSG", "Input message available" }, |
cc221e76 FF |
439 | #endif |
440 | #if defined (SIGPOLL) && defined (POLL_ERR) | |
e3be225e | 441 | { SIGPOLL, POLL_ERR, "POLL_ERR", "I/O error" }, |
cc221e76 FF |
442 | #endif |
443 | #if defined (SIGPOLL) && defined (POLL_PRI) | |
e3be225e | 444 | { SIGPOLL, POLL_PRI, "POLL_PRI", "High priority input available" }, |
cc221e76 FF |
445 | #endif |
446 | #if defined (SIGPOLL) && defined (POLL_HUP) | |
e3be225e | 447 | { SIGPOLL, POLL_HUP, "POLL_HUP", "Device disconnected" }, |
cc221e76 | 448 | #endif |
e3be225e | 449 | { 0, 0, NULL, NULL } |
cc221e76 FF |
450 | }; |
451 | ||
cc221e76 FF |
452 | static char *syscall_table[MAX_SYSCALLS]; |
453 | ||
1ab3bf1b JG |
454 | /* Prototypes for local functions */ |
455 | ||
b607efe7 FF |
456 | static void procfs_stop PARAMS ((void)); |
457 | ||
458 | static int procfs_thread_alive PARAMS ((int)); | |
459 | ||
460 | static int procfs_can_run PARAMS ((void)); | |
461 | ||
462 | static void procfs_mourn_inferior PARAMS ((void)); | |
463 | ||
464 | static void procfs_fetch_registers PARAMS ((int)); | |
465 | ||
466 | static int procfs_wait PARAMS ((int, struct target_waitstatus *)); | |
467 | ||
468 | static void procfs_open PARAMS ((char *, int)); | |
469 | ||
470 | static void procfs_files_info PARAMS ((struct target_ops *)); | |
471 | ||
472 | static void procfs_prepare_to_store PARAMS ((void)); | |
473 | ||
474 | static void procfs_detach PARAMS ((char *, int)); | |
475 | ||
476 | static void procfs_attach PARAMS ((char *, int)); | |
477 | ||
478 | static void proc_set_exec_trap PARAMS ((void)); | |
479 | ||
480 | static int procfs_init_inferior PARAMS ((int)); | |
481 | ||
482 | static struct procinfo *create_procinfo PARAMS ((int)); | |
483 | ||
484 | static void procfs_store_registers PARAMS ((int)); | |
485 | ||
486 | static int procfs_xfer_memory PARAMS ((CORE_ADDR, char *, int, int, struct target_ops *)); | |
487 | ||
488 | static void procfs_kill_inferior PARAMS ((void)); | |
489 | ||
490 | static char *sigcodedesc PARAMS ((siginfo_t *)); | |
491 | ||
492 | static char *sigcodename PARAMS ((siginfo_t *)); | |
493 | ||
494 | static struct procinfo *wait_fd PARAMS ((void)); | |
495 | ||
496 | static void remove_fd PARAMS ((struct procinfo *)); | |
497 | ||
498 | static void add_fd PARAMS ((struct procinfo *)); | |
499 | ||
e3be225e | 500 | static void set_proc_siginfo PARAMS ((struct procinfo *, int)); |
6b801388 | 501 | |
e3be225e | 502 | static void init_syscall_table PARAMS ((void)); |
cc221e76 | 503 | |
e3be225e | 504 | static char *syscallname PARAMS ((int)); |
cc221e76 | 505 | |
e3be225e | 506 | static char *signalname PARAMS ((int)); |
cc221e76 | 507 | |
e3be225e | 508 | static char *errnoname PARAMS ((int)); |
4ace50a5 | 509 | |
e3be225e | 510 | static int proc_address_to_fd PARAMS ((struct procinfo *, CORE_ADDR, int)); |
1ab3bf1b | 511 | |
234a732d | 512 | static int open_proc_file PARAMS ((int, struct procinfo *, int, int)); |
1ab3bf1b | 513 | |
e3be225e | 514 | static void close_proc_file PARAMS ((struct procinfo *)); |
1ab3bf1b | 515 | |
e3be225e | 516 | static void unconditionally_kill_inferior PARAMS ((struct procinfo *)); |
1ab3bf1b | 517 | |
3780c337 | 518 | static NORETURN void proc_init_failed PARAMS ((struct procinfo *, char *, int)) ATTR_NORETURN; |
1ab3bf1b | 519 | |
e3be225e | 520 | static void info_proc PARAMS ((char *, int)); |
cc221e76 | 521 | |
e3be225e | 522 | static void info_proc_flags PARAMS ((struct procinfo *, int)); |
cc221e76 | 523 | |
e3be225e | 524 | static void info_proc_stop PARAMS ((struct procinfo *, int)); |
1ab3bf1b | 525 | |
e3be225e | 526 | static void info_proc_siginfo PARAMS ((struct procinfo *, int)); |
cc221e76 | 527 | |
e3be225e | 528 | static void info_proc_syscalls PARAMS ((struct procinfo *, int)); |
cc221e76 | 529 | |
e3be225e | 530 | static void info_proc_mappings PARAMS ((struct procinfo *, int)); |
cc221e76 | 531 | |
e3be225e | 532 | static void info_proc_signals PARAMS ((struct procinfo *, int)); |
cc221e76 | 533 | |
e3be225e | 534 | static void info_proc_faults PARAMS ((struct procinfo *, int)); |
1ab3bf1b | 535 | |
e3be225e | 536 | static char *mappingflags PARAMS ((long)); |
1ab3bf1b | 537 | |
e3be225e | 538 | static char *lookupname PARAMS ((struct trans *, unsigned int, char *)); |
cc221e76 | 539 | |
e3be225e | 540 | static char *lookupdesc PARAMS ((struct trans *, unsigned int)); |
cc221e76 | 541 | |
e3be225e | 542 | static int do_attach PARAMS ((int pid)); |
3fbdd536 | 543 | |
e3be225e | 544 | static void do_detach PARAMS ((int siggnal)); |
3fbdd536 | 545 | |
e3be225e | 546 | static void procfs_create_inferior PARAMS ((char *, char *, char **)); |
3fbdd536 | 547 | |
e3be225e | 548 | static void procfs_notice_signals PARAMS ((int pid)); |
de43d7d0 | 549 | |
234a732d GN |
550 | static void notice_signals PARAMS ((struct procinfo *, struct sig_ctl *)); |
551 | ||
e3be225e | 552 | static struct procinfo *find_procinfo PARAMS ((pid_t pid, int okfail)); |
3950a34e | 553 | |
234a732d | 554 | static int procfs_write_pcwstop PARAMS ((struct procinfo *)); |
3780c337 | 555 | static int procfs_read_status PARAMS ((struct procinfo *)); |
234a732d GN |
556 | static void procfs_write_pckill PARAMS ((struct procinfo *)); |
557 | ||
8fc2b417 SG |
558 | typedef int syscall_func_t PARAMS ((struct procinfo *pi, int syscall_num, |
559 | int why, int *rtnval, int *statval)); | |
560 | ||
561 | static void procfs_set_syscall_trap PARAMS ((struct procinfo *pi, | |
562 | int syscall_num, int flags, | |
563 | syscall_func_t *func)); | |
564 | ||
565 | static void procfs_clear_syscall_trap PARAMS ((struct procinfo *pi, | |
566 | int syscall_num, int errok)); | |
567 | ||
568 | #define PROCFS_SYSCALL_ENTRY 0x1 /* Trap on entry to sys call */ | |
569 | #define PROCFS_SYSCALL_EXIT 0x2 /* Trap on exit from sys call */ | |
570 | ||
571 | static syscall_func_t procfs_exit_handler; | |
572 | ||
573 | static syscall_func_t procfs_exec_handler; | |
574 | ||
575 | #ifdef SYS_sproc | |
576 | static syscall_func_t procfs_sproc_handler; | |
577 | static syscall_func_t procfs_fork_handler; | |
578 | #endif | |
579 | ||
580 | #ifdef SYS_lwp_create | |
581 | static syscall_func_t procfs_lwp_creation_handler; | |
582 | #endif | |
583 | ||
584 | static void modify_inherit_on_fork_flag PARAMS ((int fd, int flag)); | |
585 | static void modify_run_on_last_close_flag PARAMS ((int fd, int flag)); | |
586 | ||
587 | /* */ | |
588 | ||
589 | struct procfs_syscall_handler | |
590 | { | |
591 | int syscall_num; /* The number of the system call being handled */ | |
592 | /* The function to be called */ | |
593 | syscall_func_t *func; | |
594 | }; | |
595 | ||
596 | static void procfs_resume PARAMS ((int pid, int step, | |
597 | enum target_signal signo)); | |
598 | ||
1ab3bf1b JG |
599 | /* External function prototypes that can't be easily included in any |
600 | header file because the args are typedefs in system include files. */ | |
601 | ||
e3be225e | 602 | extern void supply_gregset PARAMS ((gregset_t *)); |
1ab3bf1b | 603 | |
e3be225e | 604 | extern void fill_gregset PARAMS ((gregset_t *, int)); |
1ab3bf1b | 605 | |
234a732d | 606 | #ifdef FP0_REGNUM |
e3be225e | 607 | extern void supply_fpregset PARAMS ((fpregset_t *)); |
1ab3bf1b | 608 | |
e3be225e | 609 | extern void fill_fpregset PARAMS ((fpregset_t *, int)); |
234a732d | 610 | #endif |
35f5886e | 611 | |
cc221e76 FF |
612 | /* |
613 | ||
de43d7d0 SG |
614 | LOCAL FUNCTION |
615 | ||
616 | find_procinfo -- convert a process id to a struct procinfo | |
617 | ||
618 | SYNOPSIS | |
619 | ||
620 | static struct procinfo * find_procinfo (pid_t pid, int okfail); | |
621 | ||
622 | DESCRIPTION | |
623 | ||
624 | Given a process id, look it up in the procinfo chain. Returns | |
625 | a struct procinfo *. If can't find pid, then call error(), | |
626 | unless okfail is set, in which case, return NULL; | |
627 | */ | |
628 | ||
629 | static struct procinfo * | |
630 | find_procinfo (pid, okfail) | |
631 | pid_t pid; | |
632 | int okfail; | |
633 | { | |
634 | struct procinfo *procinfo; | |
635 | ||
636 | for (procinfo = procinfo_list; procinfo; procinfo = procinfo->next) | |
637 | if (procinfo->pid == pid) | |
638 | return procinfo; | |
639 | ||
640 | if (okfail) | |
641 | return NULL; | |
642 | ||
643 | error ("procfs (find_procinfo): Couldn't locate pid %d", pid); | |
644 | } | |
645 | ||
646 | /* | |
647 | ||
7c5d526e SG |
648 | LOCAL MACRO |
649 | ||
650 | current_procinfo -- convert inferior_pid to a struct procinfo | |
651 | ||
652 | SYNOPSIS | |
653 | ||
654 | static struct procinfo * current_procinfo; | |
655 | ||
656 | DESCRIPTION | |
657 | ||
658 | Looks up inferior_pid in the procinfo chain. Always returns a | |
659 | struct procinfo *. If process can't be found, we error() out. | |
660 | */ | |
661 | ||
662 | #define current_procinfo find_procinfo (inferior_pid, 0) | |
663 | ||
664 | /* | |
665 | ||
de43d7d0 SG |
666 | LOCAL FUNCTION |
667 | ||
668 | add_fd -- Add the fd to the poll/select list | |
669 | ||
670 | SYNOPSIS | |
671 | ||
672 | static void add_fd (struct procinfo *); | |
673 | ||
674 | DESCRIPTION | |
675 | ||
676 | Add the fd of the supplied procinfo to the list of fds used for | |
677 | poll/select operations. | |
678 | */ | |
679 | ||
680 | static void | |
681 | add_fd (pi) | |
682 | struct procinfo *pi; | |
683 | { | |
684 | if (num_poll_list <= 0) | |
685 | poll_list = (struct pollfd *) xmalloc (sizeof (struct pollfd)); | |
686 | else | |
687 | poll_list = (struct pollfd *) xrealloc (poll_list, | |
688 | (num_poll_list + 1) | |
689 | * sizeof (struct pollfd)); | |
234a732d GN |
690 | poll_list[num_poll_list].fd = pi->ctl_fd; |
691 | #ifdef UNIXWARE | |
692 | poll_list[num_poll_list].events = POLLWRNORM; | |
693 | #else | |
de43d7d0 | 694 | poll_list[num_poll_list].events = POLLPRI; |
234a732d | 695 | #endif |
de43d7d0 SG |
696 | |
697 | num_poll_list++; | |
698 | } | |
699 | ||
3780c337 MS |
700 | /* |
701 | ||
702 | LOCAL FUNCTION | |
703 | ||
704 | remove_fd -- Remove the fd from the poll/select list | |
705 | ||
706 | SYNOPSIS | |
707 | ||
708 | static void remove_fd (struct procinfo *); | |
709 | ||
710 | DESCRIPTION | |
711 | ||
712 | Remove the fd of the supplied procinfo from the list of fds used | |
713 | for poll/select operations. | |
714 | */ | |
715 | ||
de43d7d0 SG |
716 | static void |
717 | remove_fd (pi) | |
718 | struct procinfo *pi; | |
719 | { | |
720 | int i; | |
721 | ||
722 | for (i = 0; i < num_poll_list; i++) | |
723 | { | |
234a732d | 724 | if (poll_list[i].fd == pi->ctl_fd) |
de43d7d0 SG |
725 | { |
726 | if (i != num_poll_list - 1) | |
8fc2b417 | 727 | memcpy (poll_list + i, poll_list + i + 1, |
de43d7d0 SG |
728 | (num_poll_list - i - 1) * sizeof (struct pollfd)); |
729 | ||
730 | num_poll_list--; | |
731 | ||
732 | if (num_poll_list == 0) | |
733 | free (poll_list); | |
734 | else | |
735 | poll_list = (struct pollfd *) xrealloc (poll_list, | |
736 | num_poll_list | |
737 | * sizeof (struct pollfd)); | |
738 | return; | |
739 | } | |
740 | } | |
741 | } | |
742 | ||
234a732d GN |
743 | /* |
744 | ||
745 | LOCAL FUNCTION | |
746 | ||
747 | procfs_read_status - get procfs fd status | |
748 | ||
749 | SYNOPSIS | |
750 | ||
751 | static int procfs_read_status (pi) struct procinfo *pi; | |
752 | ||
753 | DESCRIPTION | |
754 | ||
755 | Given a pointer to a procinfo struct, get the status of | |
756 | the status_fd in the appropriate way. Returns 0 on failure, | |
757 | 1 on success. | |
758 | */ | |
759 | ||
760 | static int | |
761 | procfs_read_status (pi) | |
762 | struct procinfo *pi; | |
763 | { | |
764 | #ifdef PROCFS_USE_READ_WRITE | |
765 | if ((lseek (pi->status_fd, 0, SEEK_SET) < 0) || | |
766 | (read (pi->status_fd, (char *) &pi->prstatus, | |
767 | sizeof (gdb_prstatus_t)) != sizeof (gdb_prstatus_t))) | |
768 | #else | |
769 | if (ioctl (pi->status_fd, PIOCSTATUS, &pi->prstatus) < 0) | |
770 | #endif | |
771 | return 0; | |
772 | else | |
773 | return 1; | |
774 | } | |
775 | ||
776 | /* | |
777 | ||
778 | LOCAL FUNCTION | |
779 | ||
780 | procfs_write_pcwstop - send a PCWSTOP to procfs fd | |
781 | ||
782 | SYNOPSIS | |
783 | ||
784 | static int procfs_write_pcwstop (pi) struct procinfo *pi; | |
785 | ||
786 | DESCRIPTION | |
787 | ||
788 | Given a pointer to a procinfo struct, send a PCWSTOP to | |
789 | the ctl_fd in the appropriate way. Returns 0 on failure, | |
790 | 1 on success. | |
791 | */ | |
792 | ||
793 | static int | |
794 | procfs_write_pcwstop (pi) | |
795 | struct procinfo *pi; | |
796 | { | |
797 | #ifdef PROCFS_USE_READ_WRITE | |
798 | long cmd = PCWSTOP; | |
799 | if (write (pi->ctl_fd, (char *) &cmd, sizeof (long)) < 0) | |
800 | #else | |
801 | if (ioctl (pi->ctl_fd, PIOCWSTOP, &pi->prstatus) < 0) | |
802 | #endif | |
803 | return 0; | |
804 | else | |
805 | return 1; | |
806 | } | |
807 | ||
808 | /* | |
809 | ||
810 | LOCAL FUNCTION | |
811 | ||
812 | procfs_write_pckill - send a kill to procfs fd | |
813 | ||
814 | SYNOPSIS | |
815 | ||
816 | static void procfs_write_pckill (pi) struct procinfo *pi; | |
817 | ||
818 | DESCRIPTION | |
819 | ||
820 | Given a pointer to a procinfo struct, send a kill to | |
821 | the ctl_fd in the appropriate way. Returns 0 on failure, | |
822 | 1 on success. | |
823 | */ | |
824 | ||
825 | static void | |
826 | procfs_write_pckill (pi) | |
827 | struct procinfo *pi; | |
828 | { | |
829 | #ifdef PROCFS_USE_READ_WRITE | |
830 | struct proc_ctl pctl; | |
831 | pctl.cmd = PCKILL; | |
832 | pctl.data = SIGKILL; | |
833 | write (pi->ctl_fd, &pctl, sizeof (struct proc_ctl)); | |
834 | #else | |
835 | int signo = SIGKILL; | |
836 | ioctl (pi->ctl_fd, PIOCKILL, &signo); | |
837 | #endif | |
838 | } | |
839 | ||
7c5d526e SG |
840 | static struct procinfo * |
841 | wait_fd () | |
842 | { | |
f14465c3 | 843 | struct procinfo *pi, *next_pi; |
b607efe7 | 844 | #ifndef LOSING_POLL |
7c5d526e SG |
845 | int num_fds; |
846 | int i; | |
b607efe7 | 847 | #endif |
de43d7d0 | 848 | |
1e75b5f5 | 849 | set_sigint_trap (); /* Causes SIGINT to be passed on to the |
7c5d526e | 850 | attached process. */ |
429f1c9f | 851 | set_sigio_trap (); |
de43d7d0 | 852 | |
f14465c3 | 853 | wait_again: |
7c5d526e | 854 | #ifndef LOSING_POLL |
e172af81 FF |
855 | while (1) |
856 | { | |
857 | num_fds = poll (poll_list, num_poll_list, -1); | |
858 | if (num_fds > 0) | |
859 | break; | |
860 | if (num_fds < 0 && errno == EINTR) | |
861 | continue; | |
862 | print_sys_errmsg ("poll failed", errno); | |
863 | error ("Poll failed, returned %d", num_fds); | |
864 | } | |
234a732d | 865 | #else /* LOSING_POLL */ |
7c5d526e | 866 | pi = current_procinfo; |
de43d7d0 | 867 | |
234a732d | 868 | while (!procfs_write_pcwstop (pi)) |
7c5d526e | 869 | { |
cef0333e PS |
870 | if (errno == ENOENT) |
871 | { | |
872 | /* Process exited. */ | |
873 | pi->prstatus.pr_flags = 0; | |
874 | break; | |
875 | } | |
876 | else if (errno != EINTR) | |
8afd05c0 JK |
877 | { |
878 | print_sys_errmsg (pi->pathname, errno); | |
234a732d | 879 | error ("procfs_write_pcwstop failed"); |
8afd05c0 | 880 | } |
7c5d526e | 881 | } |
fb63d460 | 882 | pi->had_event = 1; |
234a732d | 883 | #endif /* LOSING_POLL */ |
7c5d526e | 884 | |
1e75b5f5 | 885 | clear_sigint_trap (); |
429f1c9f | 886 | clear_sigio_trap (); |
de43d7d0 | 887 | |
7c5d526e | 888 | #ifndef LOSING_POLL |
de43d7d0 | 889 | |
7c5d526e SG |
890 | for (i = 0; i < num_poll_list && num_fds > 0; i++) |
891 | { | |
3780c337 MS |
892 | if (0 == (poll_list[i].revents & |
893 | (POLLWRNORM | POLLPRI | POLLERR | POLLHUP | POLLNVAL))) | |
7c5d526e | 894 | continue; |
f14465c3 | 895 | for (pi = procinfo_list; pi; pi = next_pi) |
7c5d526e | 896 | { |
f14465c3 | 897 | next_pi = pi->next; |
234a732d | 898 | if (poll_list[i].fd == pi->ctl_fd) |
7c5d526e | 899 | { |
f14465c3 MS |
900 | num_fds--; |
901 | if ((poll_list[i].revents & POLLHUP) != 0 || | |
902 | !procfs_read_status(pi)) | |
903 | { /* The LWP has apparently terminated. */ | |
3780c337 | 904 | if (info_verbose) |
f14465c3 | 905 | printf_filtered ("LWP %d exited.\n", |
3780c337 | 906 | (pi->pid >> 16) & 0xffff); |
f14465c3 MS |
907 | close_proc_file (pi); |
908 | if (num_fds != 0) | |
909 | continue; /* already another event to process */ | |
910 | else | |
911 | goto wait_again; /* wait for another event */ | |
7c5d526e | 912 | } |
7c5d526e SG |
913 | pi->had_event = 1; |
914 | break; | |
915 | } | |
916 | } | |
917 | if (!pi) | |
8fc2b417 | 918 | error ("wait_fd: Couldn't find procinfo for fd %d\n", |
7c5d526e SG |
919 | poll_list[i].fd); |
920 | } | |
921 | #endif /* LOSING_POLL */ | |
922 | ||
923 | return pi; | |
924 | } | |
de43d7d0 SG |
925 | |
926 | /* | |
927 | ||
cc221e76 FF |
928 | LOCAL FUNCTION |
929 | ||
930 | lookupdesc -- translate a value to a summary desc string | |
931 | ||
932 | SYNOPSIS | |
933 | ||
934 | static char *lookupdesc (struct trans *transp, unsigned int val); | |
935 | ||
936 | DESCRIPTION | |
937 | ||
938 | Given a pointer to a translation table and a value to be translated, | |
939 | lookup the desc string and return it. | |
940 | */ | |
941 | ||
942 | static char * | |
943 | lookupdesc (transp, val) | |
944 | struct trans *transp; | |
945 | unsigned int val; | |
946 | { | |
947 | char *desc; | |
948 | ||
949 | for (desc = NULL; transp -> name != NULL; transp++) | |
950 | { | |
951 | if (transp -> value == val) | |
952 | { | |
953 | desc = transp -> desc; | |
954 | break; | |
955 | } | |
956 | } | |
957 | ||
958 | /* Didn't find a translation for the specified value, set a default one. */ | |
959 | ||
960 | if (desc == NULL) | |
961 | { | |
962 | desc = "Unknown"; | |
963 | } | |
964 | return (desc); | |
965 | } | |
966 | ||
967 | /* | |
968 | ||
969 | LOCAL FUNCTION | |
970 | ||
971 | lookupname -- translate a value to symbolic name | |
972 | ||
973 | SYNOPSIS | |
974 | ||
975 | static char *lookupname (struct trans *transp, unsigned int val, | |
976 | char *prefix); | |
977 | ||
978 | DESCRIPTION | |
979 | ||
980 | Given a pointer to a translation table, a value to be translated, | |
981 | and a default prefix to return if the value can't be translated, | |
982 | match the value with one of the translation table entries and | |
983 | return a pointer to the symbolic name. | |
984 | ||
985 | If no match is found it just returns the value as a printable string, | |
986 | with the given prefix. The previous such value, if any, is freed | |
987 | at this time. | |
988 | */ | |
989 | ||
990 | static char * | |
991 | lookupname (transp, val, prefix) | |
992 | struct trans *transp; | |
993 | unsigned int val; | |
994 | char *prefix; | |
995 | { | |
996 | static char *locbuf; | |
997 | char *name; | |
998 | ||
999 | for (name = NULL; transp -> name != NULL; transp++) | |
1000 | { | |
1001 | if (transp -> value == val) | |
1002 | { | |
1003 | name = transp -> name; | |
1004 | break; | |
1005 | } | |
1006 | } | |
1007 | ||
1008 | /* Didn't find a translation for the specified value, build a default | |
1009 | one using the specified prefix and return it. The lifetime of | |
1010 | the value is only until the next one is needed. */ | |
1011 | ||
1012 | if (name == NULL) | |
1013 | { | |
1014 | if (locbuf != NULL) | |
1015 | { | |
1016 | free (locbuf); | |
1017 | } | |
1018 | locbuf = xmalloc (strlen (prefix) + 16); | |
4ed3a9ea | 1019 | sprintf (locbuf, "%s %u", prefix, val); |
cc221e76 FF |
1020 | name = locbuf; |
1021 | } | |
1022 | return (name); | |
1023 | } | |
1024 | ||
1025 | static char * | |
1026 | sigcodename (sip) | |
1027 | siginfo_t *sip; | |
1028 | { | |
1029 | struct sigcode *scp; | |
1030 | char *name = NULL; | |
1031 | static char locbuf[32]; | |
1032 | ||
1033 | for (scp = siginfo_table; scp -> codename != NULL; scp++) | |
1034 | { | |
1035 | if ((scp -> signo == sip -> si_signo) && | |
1036 | (scp -> code == sip -> si_code)) | |
1037 | { | |
1038 | name = scp -> codename; | |
1039 | break; | |
1040 | } | |
1041 | } | |
1042 | if (name == NULL) | |
1043 | { | |
4ed3a9ea | 1044 | sprintf (locbuf, "sigcode %u", sip -> si_signo); |
cc221e76 FF |
1045 | name = locbuf; |
1046 | } | |
1047 | return (name); | |
1048 | } | |
1049 | ||
3fbdd536 JG |
1050 | static char * |
1051 | sigcodedesc (sip) | |
cc221e76 FF |
1052 | siginfo_t *sip; |
1053 | { | |
1054 | struct sigcode *scp; | |
1055 | char *desc = NULL; | |
1056 | ||
1057 | for (scp = siginfo_table; scp -> codename != NULL; scp++) | |
1058 | { | |
1059 | if ((scp -> signo == sip -> si_signo) && | |
1060 | (scp -> code == sip -> si_code)) | |
1061 | { | |
1062 | desc = scp -> desc; | |
1063 | break; | |
1064 | } | |
1065 | } | |
1066 | if (desc == NULL) | |
1067 | { | |
1068 | desc = "Unrecognized signal or trap use"; | |
1069 | } | |
1070 | return (desc); | |
1071 | } | |
1072 | ||
1073 | /* | |
1074 | ||
1075 | LOCAL FUNCTION | |
1076 | ||
1077 | syscallname - translate a system call number into a system call name | |
1078 | ||
1079 | SYNOPSIS | |
1080 | ||
1081 | char *syscallname (int syscallnum) | |
1082 | ||
1083 | DESCRIPTION | |
1084 | ||
1085 | Given a system call number, translate it into the printable name | |
1086 | of a system call, or into "syscall <num>" if it is an unknown | |
1087 | number. | |
1088 | */ | |
1089 | ||
1090 | static char * | |
1091 | syscallname (syscallnum) | |
1092 | int syscallnum; | |
1093 | { | |
1094 | static char locbuf[32]; | |
cc221e76 | 1095 | |
8fc2b417 SG |
1096 | if (syscallnum >= 0 && syscallnum < MAX_SYSCALLS |
1097 | && syscall_table[syscallnum] != NULL) | |
1098 | return syscall_table[syscallnum]; | |
cc221e76 FF |
1099 | else |
1100 | { | |
4ed3a9ea | 1101 | sprintf (locbuf, "syscall %u", syscallnum); |
8fc2b417 | 1102 | return locbuf; |
cc221e76 | 1103 | } |
cc221e76 FF |
1104 | } |
1105 | ||
1106 | /* | |
1107 | ||
1108 | LOCAL FUNCTION | |
1109 | ||
1110 | init_syscall_table - initialize syscall translation table | |
1111 | ||
1112 | SYNOPSIS | |
1113 | ||
1114 | void init_syscall_table (void) | |
1115 | ||
1116 | DESCRIPTION | |
1117 | ||
1118 | Dynamically initialize the translation table to convert system | |
1119 | call numbers into printable system call names. Done once per | |
1120 | gdb run, on initialization. | |
1121 | ||
1122 | NOTES | |
1123 | ||
1124 | This is awfully ugly, but preprocessor tricks to make it prettier | |
1125 | tend to be nonportable. | |
1126 | */ | |
1127 | ||
1128 | static void | |
1129 | init_syscall_table () | |
1130 | { | |
cc221e76 FF |
1131 | #if defined (SYS_exit) |
1132 | syscall_table[SYS_exit] = "exit"; | |
1133 | #endif | |
1134 | #if defined (SYS_fork) | |
1135 | syscall_table[SYS_fork] = "fork"; | |
1136 | #endif | |
1137 | #if defined (SYS_read) | |
1138 | syscall_table[SYS_read] = "read"; | |
1139 | #endif | |
1140 | #if defined (SYS_write) | |
1141 | syscall_table[SYS_write] = "write"; | |
1142 | #endif | |
1143 | #if defined (SYS_open) | |
1144 | syscall_table[SYS_open] = "open"; | |
1145 | #endif | |
1146 | #if defined (SYS_close) | |
1147 | syscall_table[SYS_close] = "close"; | |
1148 | #endif | |
1149 | #if defined (SYS_wait) | |
1150 | syscall_table[SYS_wait] = "wait"; | |
1151 | #endif | |
1152 | #if defined (SYS_creat) | |
1153 | syscall_table[SYS_creat] = "creat"; | |
1154 | #endif | |
1155 | #if defined (SYS_link) | |
1156 | syscall_table[SYS_link] = "link"; | |
1157 | #endif | |
1158 | #if defined (SYS_unlink) | |
1159 | syscall_table[SYS_unlink] = "unlink"; | |
1160 | #endif | |
1161 | #if defined (SYS_exec) | |
1162 | syscall_table[SYS_exec] = "exec"; | |
1163 | #endif | |
1164 | #if defined (SYS_execv) | |
1165 | syscall_table[SYS_execv] = "execv"; | |
1166 | #endif | |
1167 | #if defined (SYS_execve) | |
1168 | syscall_table[SYS_execve] = "execve"; | |
1169 | #endif | |
1170 | #if defined (SYS_chdir) | |
1171 | syscall_table[SYS_chdir] = "chdir"; | |
1172 | #endif | |
1173 | #if defined (SYS_time) | |
1174 | syscall_table[SYS_time] = "time"; | |
1175 | #endif | |
1176 | #if defined (SYS_mknod) | |
1177 | syscall_table[SYS_mknod] = "mknod"; | |
1178 | #endif | |
1179 | #if defined (SYS_chmod) | |
1180 | syscall_table[SYS_chmod] = "chmod"; | |
1181 | #endif | |
1182 | #if defined (SYS_chown) | |
1183 | syscall_table[SYS_chown] = "chown"; | |
1184 | #endif | |
1185 | #if defined (SYS_brk) | |
1186 | syscall_table[SYS_brk] = "brk"; | |
1187 | #endif | |
1188 | #if defined (SYS_stat) | |
1189 | syscall_table[SYS_stat] = "stat"; | |
1190 | #endif | |
1191 | #if defined (SYS_lseek) | |
1192 | syscall_table[SYS_lseek] = "lseek"; | |
1193 | #endif | |
1194 | #if defined (SYS_getpid) | |
1195 | syscall_table[SYS_getpid] = "getpid"; | |
1196 | #endif | |
1197 | #if defined (SYS_mount) | |
1198 | syscall_table[SYS_mount] = "mount"; | |
1199 | #endif | |
1200 | #if defined (SYS_umount) | |
1201 | syscall_table[SYS_umount] = "umount"; | |
1202 | #endif | |
1203 | #if defined (SYS_setuid) | |
1204 | syscall_table[SYS_setuid] = "setuid"; | |
1205 | #endif | |
1206 | #if defined (SYS_getuid) | |
1207 | syscall_table[SYS_getuid] = "getuid"; | |
1208 | #endif | |
1209 | #if defined (SYS_stime) | |
1210 | syscall_table[SYS_stime] = "stime"; | |
1211 | #endif | |
1212 | #if defined (SYS_ptrace) | |
1213 | syscall_table[SYS_ptrace] = "ptrace"; | |
1214 | #endif | |
1215 | #if defined (SYS_alarm) | |
1216 | syscall_table[SYS_alarm] = "alarm"; | |
1217 | #endif | |
1218 | #if defined (SYS_fstat) | |
1219 | syscall_table[SYS_fstat] = "fstat"; | |
1220 | #endif | |
1221 | #if defined (SYS_pause) | |
1222 | syscall_table[SYS_pause] = "pause"; | |
1223 | #endif | |
1224 | #if defined (SYS_utime) | |
1225 | syscall_table[SYS_utime] = "utime"; | |
1226 | #endif | |
1227 | #if defined (SYS_stty) | |
1228 | syscall_table[SYS_stty] = "stty"; | |
1229 | #endif | |
1230 | #if defined (SYS_gtty) | |
1231 | syscall_table[SYS_gtty] = "gtty"; | |
1232 | #endif | |
1233 | #if defined (SYS_access) | |
1234 | syscall_table[SYS_access] = "access"; | |
1235 | #endif | |
1236 | #if defined (SYS_nice) | |
1237 | syscall_table[SYS_nice] = "nice"; | |
1238 | #endif | |
1239 | #if defined (SYS_statfs) | |
1240 | syscall_table[SYS_statfs] = "statfs"; | |
1241 | #endif | |
1242 | #if defined (SYS_sync) | |
1243 | syscall_table[SYS_sync] = "sync"; | |
1244 | #endif | |
1245 | #if defined (SYS_kill) | |
1246 | syscall_table[SYS_kill] = "kill"; | |
1247 | #endif | |
1248 | #if defined (SYS_fstatfs) | |
1249 | syscall_table[SYS_fstatfs] = "fstatfs"; | |
1250 | #endif | |
1251 | #if defined (SYS_pgrpsys) | |
1252 | syscall_table[SYS_pgrpsys] = "pgrpsys"; | |
1253 | #endif | |
1254 | #if defined (SYS_xenix) | |
1255 | syscall_table[SYS_xenix] = "xenix"; | |
1256 | #endif | |
1257 | #if defined (SYS_dup) | |
1258 | syscall_table[SYS_dup] = "dup"; | |
1259 | #endif | |
1260 | #if defined (SYS_pipe) | |
1261 | syscall_table[SYS_pipe] = "pipe"; | |
1262 | #endif | |
1263 | #if defined (SYS_times) | |
1264 | syscall_table[SYS_times] = "times"; | |
1265 | #endif | |
1266 | #if defined (SYS_profil) | |
1267 | syscall_table[SYS_profil] = "profil"; | |
1268 | #endif | |
1269 | #if defined (SYS_plock) | |
1270 | syscall_table[SYS_plock] = "plock"; | |
1271 | #endif | |
1272 | #if defined (SYS_setgid) | |
1273 | syscall_table[SYS_setgid] = "setgid"; | |
1274 | #endif | |
1275 | #if defined (SYS_getgid) | |
1276 | syscall_table[SYS_getgid] = "getgid"; | |
1277 | #endif | |
1278 | #if defined (SYS_signal) | |
1279 | syscall_table[SYS_signal] = "signal"; | |
1280 | #endif | |
1281 | #if defined (SYS_msgsys) | |
1282 | syscall_table[SYS_msgsys] = "msgsys"; | |
1283 | #endif | |
1284 | #if defined (SYS_sys3b) | |
1285 | syscall_table[SYS_sys3b] = "sys3b"; | |
1286 | #endif | |
234a732d GN |
1287 | #if defined (SYS_sysi86) |
1288 | syscall_table[SYS_sysi86] = "sysi86"; | |
1289 | #endif | |
cc221e76 FF |
1290 | #if defined (SYS_acct) |
1291 | syscall_table[SYS_acct] = "acct"; | |
1292 | #endif | |
1293 | #if defined (SYS_shmsys) | |
1294 | syscall_table[SYS_shmsys] = "shmsys"; | |
1295 | #endif | |
1296 | #if defined (SYS_semsys) | |
1297 | syscall_table[SYS_semsys] = "semsys"; | |
1298 | #endif | |
1299 | #if defined (SYS_ioctl) | |
1300 | syscall_table[SYS_ioctl] = "ioctl"; | |
1301 | #endif | |
1302 | #if defined (SYS_uadmin) | |
1303 | syscall_table[SYS_uadmin] = "uadmin"; | |
1304 | #endif | |
1305 | #if defined (SYS_utssys) | |
1306 | syscall_table[SYS_utssys] = "utssys"; | |
1307 | #endif | |
1308 | #if defined (SYS_fsync) | |
1309 | syscall_table[SYS_fsync] = "fsync"; | |
1310 | #endif | |
1311 | #if defined (SYS_umask) | |
1312 | syscall_table[SYS_umask] = "umask"; | |
1313 | #endif | |
1314 | #if defined (SYS_chroot) | |
1315 | syscall_table[SYS_chroot] = "chroot"; | |
1316 | #endif | |
1317 | #if defined (SYS_fcntl) | |
1318 | syscall_table[SYS_fcntl] = "fcntl"; | |
1319 | #endif | |
1320 | #if defined (SYS_ulimit) | |
1321 | syscall_table[SYS_ulimit] = "ulimit"; | |
1322 | #endif | |
1323 | #if defined (SYS_rfsys) | |
1324 | syscall_table[SYS_rfsys] = "rfsys"; | |
1325 | #endif | |
1326 | #if defined (SYS_rmdir) | |
1327 | syscall_table[SYS_rmdir] = "rmdir"; | |
1328 | #endif | |
1329 | #if defined (SYS_mkdir) | |
1330 | syscall_table[SYS_mkdir] = "mkdir"; | |
1331 | #endif | |
1332 | #if defined (SYS_getdents) | |
1333 | syscall_table[SYS_getdents] = "getdents"; | |
1334 | #endif | |
1335 | #if defined (SYS_sysfs) | |
1336 | syscall_table[SYS_sysfs] = "sysfs"; | |
1337 | #endif | |
1338 | #if defined (SYS_getmsg) | |
1339 | syscall_table[SYS_getmsg] = "getmsg"; | |
1340 | #endif | |
1341 | #if defined (SYS_putmsg) | |
1342 | syscall_table[SYS_putmsg] = "putmsg"; | |
1343 | #endif | |
1344 | #if defined (SYS_poll) | |
1345 | syscall_table[SYS_poll] = "poll"; | |
1346 | #endif | |
1347 | #if defined (SYS_lstat) | |
1348 | syscall_table[SYS_lstat] = "lstat"; | |
1349 | #endif | |
1350 | #if defined (SYS_symlink) | |
1351 | syscall_table[SYS_symlink] = "symlink"; | |
1352 | #endif | |
1353 | #if defined (SYS_readlink) | |
1354 | syscall_table[SYS_readlink] = "readlink"; | |
1355 | #endif | |
1356 | #if defined (SYS_setgroups) | |
1357 | syscall_table[SYS_setgroups] = "setgroups"; | |
1358 | #endif | |
1359 | #if defined (SYS_getgroups) | |
1360 | syscall_table[SYS_getgroups] = "getgroups"; | |
1361 | #endif | |
1362 | #if defined (SYS_fchmod) | |
1363 | syscall_table[SYS_fchmod] = "fchmod"; | |
1364 | #endif | |
1365 | #if defined (SYS_fchown) | |
1366 | syscall_table[SYS_fchown] = "fchown"; | |
1367 | #endif | |
1368 | #if defined (SYS_sigprocmask) | |
1369 | syscall_table[SYS_sigprocmask] = "sigprocmask"; | |
1370 | #endif | |
1371 | #if defined (SYS_sigsuspend) | |
1372 | syscall_table[SYS_sigsuspend] = "sigsuspend"; | |
1373 | #endif | |
1374 | #if defined (SYS_sigaltstack) | |
1375 | syscall_table[SYS_sigaltstack] = "sigaltstack"; | |
1376 | #endif | |
1377 | #if defined (SYS_sigaction) | |
1378 | syscall_table[SYS_sigaction] = "sigaction"; | |
1379 | #endif | |
1380 | #if defined (SYS_sigpending) | |
1381 | syscall_table[SYS_sigpending] = "sigpending"; | |
1382 | #endif | |
1383 | #if defined (SYS_context) | |
1384 | syscall_table[SYS_context] = "context"; | |
1385 | #endif | |
1386 | #if defined (SYS_evsys) | |
1387 | syscall_table[SYS_evsys] = "evsys"; | |
1388 | #endif | |
1389 | #if defined (SYS_evtrapret) | |
1390 | syscall_table[SYS_evtrapret] = "evtrapret"; | |
1391 | #endif | |
1392 | #if defined (SYS_statvfs) | |
1393 | syscall_table[SYS_statvfs] = "statvfs"; | |
1394 | #endif | |
1395 | #if defined (SYS_fstatvfs) | |
1396 | syscall_table[SYS_fstatvfs] = "fstatvfs"; | |
1397 | #endif | |
1398 | #if defined (SYS_nfssys) | |
1399 | syscall_table[SYS_nfssys] = "nfssys"; | |
1400 | #endif | |
1401 | #if defined (SYS_waitsys) | |
1402 | syscall_table[SYS_waitsys] = "waitsys"; | |
1403 | #endif | |
1404 | #if defined (SYS_sigsendsys) | |
1405 | syscall_table[SYS_sigsendsys] = "sigsendsys"; | |
1406 | #endif | |
1407 | #if defined (SYS_hrtsys) | |
1408 | syscall_table[SYS_hrtsys] = "hrtsys"; | |
1409 | #endif | |
1410 | #if defined (SYS_acancel) | |
1411 | syscall_table[SYS_acancel] = "acancel"; | |
1412 | #endif | |
1413 | #if defined (SYS_async) | |
1414 | syscall_table[SYS_async] = "async"; | |
1415 | #endif | |
1416 | #if defined (SYS_priocntlsys) | |
1417 | syscall_table[SYS_priocntlsys] = "priocntlsys"; | |
1418 | #endif | |
1419 | #if defined (SYS_pathconf) | |
1420 | syscall_table[SYS_pathconf] = "pathconf"; | |
1421 | #endif | |
1422 | #if defined (SYS_mincore) | |
1423 | syscall_table[SYS_mincore] = "mincore"; | |
1424 | #endif | |
1425 | #if defined (SYS_mmap) | |
1426 | syscall_table[SYS_mmap] = "mmap"; | |
1427 | #endif | |
1428 | #if defined (SYS_mprotect) | |
1429 | syscall_table[SYS_mprotect] = "mprotect"; | |
1430 | #endif | |
1431 | #if defined (SYS_munmap) | |
1432 | syscall_table[SYS_munmap] = "munmap"; | |
1433 | #endif | |
1434 | #if defined (SYS_fpathconf) | |
1435 | syscall_table[SYS_fpathconf] = "fpathconf"; | |
1436 | #endif | |
1437 | #if defined (SYS_vfork) | |
1438 | syscall_table[SYS_vfork] = "vfork"; | |
1439 | #endif | |
1440 | #if defined (SYS_fchdir) | |
1441 | syscall_table[SYS_fchdir] = "fchdir"; | |
1442 | #endif | |
1443 | #if defined (SYS_readv) | |
1444 | syscall_table[SYS_readv] = "readv"; | |
1445 | #endif | |
1446 | #if defined (SYS_writev) | |
1447 | syscall_table[SYS_writev] = "writev"; | |
1448 | #endif | |
1449 | #if defined (SYS_xstat) | |
1450 | syscall_table[SYS_xstat] = "xstat"; | |
1451 | #endif | |
1452 | #if defined (SYS_lxstat) | |
1453 | syscall_table[SYS_lxstat] = "lxstat"; | |
1454 | #endif | |
1455 | #if defined (SYS_fxstat) | |
1456 | syscall_table[SYS_fxstat] = "fxstat"; | |
1457 | #endif | |
1458 | #if defined (SYS_xmknod) | |
1459 | syscall_table[SYS_xmknod] = "xmknod"; | |
1460 | #endif | |
1461 | #if defined (SYS_clocal) | |
1462 | syscall_table[SYS_clocal] = "clocal"; | |
1463 | #endif | |
1464 | #if defined (SYS_setrlimit) | |
1465 | syscall_table[SYS_setrlimit] = "setrlimit"; | |
1466 | #endif | |
1467 | #if defined (SYS_getrlimit) | |
1468 | syscall_table[SYS_getrlimit] = "getrlimit"; | |
1469 | #endif | |
1470 | #if defined (SYS_lchown) | |
1471 | syscall_table[SYS_lchown] = "lchown"; | |
1472 | #endif | |
1473 | #if defined (SYS_memcntl) | |
1474 | syscall_table[SYS_memcntl] = "memcntl"; | |
1475 | #endif | |
1476 | #if defined (SYS_getpmsg) | |
1477 | syscall_table[SYS_getpmsg] = "getpmsg"; | |
1478 | #endif | |
1479 | #if defined (SYS_putpmsg) | |
1480 | syscall_table[SYS_putpmsg] = "putpmsg"; | |
1481 | #endif | |
1482 | #if defined (SYS_rename) | |
1483 | syscall_table[SYS_rename] = "rename"; | |
1484 | #endif | |
1485 | #if defined (SYS_uname) | |
1486 | syscall_table[SYS_uname] = "uname"; | |
1487 | #endif | |
1488 | #if defined (SYS_setegid) | |
1489 | syscall_table[SYS_setegid] = "setegid"; | |
1490 | #endif | |
1491 | #if defined (SYS_sysconfig) | |
1492 | syscall_table[SYS_sysconfig] = "sysconfig"; | |
1493 | #endif | |
1494 | #if defined (SYS_adjtime) | |
1495 | syscall_table[SYS_adjtime] = "adjtime"; | |
1496 | #endif | |
1497 | #if defined (SYS_systeminfo) | |
1498 | syscall_table[SYS_systeminfo] = "systeminfo"; | |
1499 | #endif | |
1500 | #if defined (SYS_seteuid) | |
1501 | syscall_table[SYS_seteuid] = "seteuid"; | |
1502 | #endif | |
de43d7d0 SG |
1503 | #if defined (SYS_sproc) |
1504 | syscall_table[SYS_sproc] = "sproc"; | |
1505 | #endif | |
234a732d GN |
1506 | #if defined (SYS_keyctl) |
1507 | syscall_table[SYS_keyctl] = "keyctl"; | |
1508 | #endif | |
1509 | #if defined (SYS_secsys) | |
1510 | syscall_table[SYS_secsys] = "secsys"; | |
1511 | #endif | |
1512 | #if defined (SYS_filepriv) | |
1513 | syscall_table[SYS_filepriv] = "filepriv"; | |
1514 | #endif | |
1515 | #if defined (SYS_procpriv) | |
1516 | syscall_table[SYS_procpriv] = "procpriv"; | |
1517 | #endif | |
1518 | #if defined (SYS_devstat) | |
1519 | syscall_table[SYS_devstat] = "devstat"; | |
1520 | #endif | |
1521 | #if defined (SYS_aclipc) | |
1522 | syscall_table[SYS_aclipc] = "aclipc"; | |
1523 | #endif | |
1524 | #if defined (SYS_fdevstat) | |
1525 | syscall_table[SYS_fdevstat] = "fdevstat"; | |
1526 | #endif | |
1527 | #if defined (SYS_flvlfile) | |
1528 | syscall_table[SYS_flvlfile] = "flvlfile"; | |
1529 | #endif | |
1530 | #if defined (SYS_lvlfile) | |
1531 | syscall_table[SYS_lvlfile] = "lvlfile"; | |
1532 | #endif | |
1533 | #if defined (SYS_lvlequal) | |
1534 | syscall_table[SYS_lvlequal] = "lvlequal"; | |
1535 | #endif | |
1536 | #if defined (SYS_lvlproc) | |
1537 | syscall_table[SYS_lvlproc] = "lvlproc"; | |
1538 | #endif | |
1539 | #if defined (SYS_lvlipc) | |
1540 | syscall_table[SYS_lvlipc] = "lvlipc"; | |
1541 | #endif | |
1542 | #if defined (SYS_acl) | |
1543 | syscall_table[SYS_acl] = "acl"; | |
1544 | #endif | |
1545 | #if defined (SYS_auditevt) | |
1546 | syscall_table[SYS_auditevt] = "auditevt"; | |
1547 | #endif | |
1548 | #if defined (SYS_auditctl) | |
1549 | syscall_table[SYS_auditctl] = "auditctl"; | |
1550 | #endif | |
1551 | #if defined (SYS_auditdmp) | |
1552 | syscall_table[SYS_auditdmp] = "auditdmp"; | |
1553 | #endif | |
1554 | #if defined (SYS_auditlog) | |
1555 | syscall_table[SYS_auditlog] = "auditlog"; | |
1556 | #endif | |
1557 | #if defined (SYS_auditbuf) | |
1558 | syscall_table[SYS_auditbuf] = "auditbuf"; | |
1559 | #endif | |
1560 | #if defined (SYS_lvldom) | |
1561 | syscall_table[SYS_lvldom] = "lvldom"; | |
1562 | #endif | |
1563 | #if defined (SYS_lvlvfs) | |
1564 | syscall_table[SYS_lvlvfs] = "lvlvfs"; | |
1565 | #endif | |
1566 | #if defined (SYS_mkmld) | |
1567 | syscall_table[SYS_mkmld] = "mkmld"; | |
1568 | #endif | |
1569 | #if defined (SYS_mldmode) | |
1570 | syscall_table[SYS_mldmode] = "mldmode"; | |
1571 | #endif | |
1572 | #if defined (SYS_secadvise) | |
1573 | syscall_table[SYS_secadvise] = "secadvise"; | |
1574 | #endif | |
1575 | #if defined (SYS_online) | |
1576 | syscall_table[SYS_online] = "online"; | |
1577 | #endif | |
1578 | #if defined (SYS_setitimer) | |
1579 | syscall_table[SYS_setitimer] = "setitimer"; | |
1580 | #endif | |
1581 | #if defined (SYS_getitimer) | |
1582 | syscall_table[SYS_getitimer] = "getitimer"; | |
1583 | #endif | |
1584 | #if defined (SYS_gettimeofday) | |
1585 | syscall_table[SYS_gettimeofday] = "gettimeofday"; | |
1586 | #endif | |
1587 | #if defined (SYS_settimeofday) | |
1588 | syscall_table[SYS_settimeofday] = "settimeofday"; | |
1589 | #endif | |
3780c337 MS |
1590 | #if defined (SYS_lwp_create) |
1591 | syscall_table[SYS_lwp_create] = "_lwp_create"; | |
234a732d | 1592 | #endif |
3780c337 MS |
1593 | #if defined (SYS_lwp_exit) |
1594 | syscall_table[SYS_lwp_exit] = "_lwp_exit"; | |
234a732d | 1595 | #endif |
3780c337 MS |
1596 | #if defined (SYS_lwp_wait) |
1597 | syscall_table[SYS_lwp_wait] = "_lwp_wait"; | |
234a732d | 1598 | #endif |
3780c337 MS |
1599 | #if defined (SYS_lwp_self) |
1600 | syscall_table[SYS_lwp_self] = "_lwp_self"; | |
234a732d | 1601 | #endif |
3780c337 MS |
1602 | #if defined (SYS_lwp_info) |
1603 | syscall_table[SYS_lwp_info] = "_lwp_info"; | |
234a732d | 1604 | #endif |
3780c337 MS |
1605 | #if defined (SYS_lwp_private) |
1606 | syscall_table[SYS_lwp_private] = "_lwp_private"; | |
234a732d GN |
1607 | #endif |
1608 | #if defined (SYS_processor_bind) | |
1609 | syscall_table[SYS_processor_bind] = "processor_bind"; | |
1610 | #endif | |
1611 | #if defined (SYS_processor_exbind) | |
1612 | syscall_table[SYS_processor_exbind] = "processor_exbind"; | |
1613 | #endif | |
1614 | #if defined (SYS_prepblock) | |
1615 | syscall_table[SYS_prepblock] = "prepblock"; | |
1616 | #endif | |
1617 | #if defined (SYS_block) | |
1618 | syscall_table[SYS_block] = "block"; | |
1619 | #endif | |
1620 | #if defined (SYS_rdblock) | |
1621 | syscall_table[SYS_rdblock] = "rdblock"; | |
1622 | #endif | |
1623 | #if defined (SYS_unblock) | |
1624 | syscall_table[SYS_unblock] = "unblock"; | |
1625 | #endif | |
1626 | #if defined (SYS_cancelblock) | |
1627 | syscall_table[SYS_cancelblock] = "cancelblock"; | |
1628 | #endif | |
1629 | #if defined (SYS_pread) | |
1630 | syscall_table[SYS_pread] = "pread"; | |
1631 | #endif | |
1632 | #if defined (SYS_pwrite) | |
1633 | syscall_table[SYS_pwrite] = "pwrite"; | |
1634 | #endif | |
1635 | #if defined (SYS_truncate) | |
1636 | syscall_table[SYS_truncate] = "truncate"; | |
1637 | #endif | |
1638 | #if defined (SYS_ftruncate) | |
1639 | syscall_table[SYS_ftruncate] = "ftruncate"; | |
1640 | #endif | |
3780c337 MS |
1641 | #if defined (SYS_lwp_kill) |
1642 | syscall_table[SYS_lwp_kill] = "_lwp_kill"; | |
234a732d GN |
1643 | #endif |
1644 | #if defined (SYS_sigwait) | |
1645 | syscall_table[SYS_sigwait] = "sigwait"; | |
1646 | #endif | |
1647 | #if defined (SYS_fork1) | |
1648 | syscall_table[SYS_fork1] = "fork1"; | |
1649 | #endif | |
1650 | #if defined (SYS_forkall) | |
1651 | syscall_table[SYS_forkall] = "forkall"; | |
1652 | #endif | |
1653 | #if defined (SYS_modload) | |
1654 | syscall_table[SYS_modload] = "modload"; | |
1655 | #endif | |
1656 | #if defined (SYS_moduload) | |
1657 | syscall_table[SYS_moduload] = "moduload"; | |
1658 | #endif | |
1659 | #if defined (SYS_modpath) | |
1660 | syscall_table[SYS_modpath] = "modpath"; | |
1661 | #endif | |
1662 | #if defined (SYS_modstat) | |
1663 | syscall_table[SYS_modstat] = "modstat"; | |
1664 | #endif | |
1665 | #if defined (SYS_modadm) | |
1666 | syscall_table[SYS_modadm] = "modadm"; | |
1667 | #endif | |
1668 | #if defined (SYS_getksym) | |
1669 | syscall_table[SYS_getksym] = "getksym"; | |
1670 | #endif | |
3780c337 MS |
1671 | #if defined (SYS_lwp_suspend) |
1672 | syscall_table[SYS_lwp_suspend] = "_lwp_suspend"; | |
234a732d | 1673 | #endif |
3780c337 MS |
1674 | #if defined (SYS_lwp_continue) |
1675 | syscall_table[SYS_lwp_continue] = "_lwp_continue"; | |
234a732d GN |
1676 | #endif |
1677 | #if defined (SYS_priocntllst) | |
1678 | syscall_table[SYS_priocntllst] = "priocntllst"; | |
1679 | #endif | |
1680 | #if defined (SYS_sleep) | |
1681 | syscall_table[SYS_sleep] = "sleep"; | |
1682 | #endif | |
1683 | #if defined (SYS_lwp_sema_wait) | |
3780c337 | 1684 | syscall_table[SYS_lwp_sema_wait] = "_lwp_sema_wait"; |
234a732d GN |
1685 | #endif |
1686 | #if defined (SYS_lwp_sema_post) | |
3780c337 | 1687 | syscall_table[SYS_lwp_sema_post] = "_lwp_sema_post"; |
234a732d GN |
1688 | #endif |
1689 | #if defined (SYS_lwp_sema_trywait) | |
1690 | syscall_table[SYS_lwp_sema_trywait] = "lwp_sema_trywait"; | |
1691 | #endif | |
cc221e76 | 1692 | } |
35f5886e FF |
1693 | |
1694 | /* | |
1695 | ||
3fbdd536 | 1696 | LOCAL FUNCTION |
35f5886e | 1697 | |
3fbdd536 | 1698 | procfs_kill_inferior - kill any currently inferior |
35f5886e FF |
1699 | |
1700 | SYNOPSIS | |
1701 | ||
3fbdd536 | 1702 | void procfs_kill_inferior (void) |
35f5886e FF |
1703 | |
1704 | DESCRIPTION | |
1705 | ||
1706 | Kill any current inferior. | |
1707 | ||
1708 | NOTES | |
1709 | ||
1710 | Kills even attached inferiors. Presumably the user has already | |
1711 | been prompted that the inferior is an attached one rather than | |
1712 | one started by gdb. (FIXME?) | |
1713 | ||
1714 | */ | |
1715 | ||
3fbdd536 JG |
1716 | static void |
1717 | procfs_kill_inferior () | |
35f5886e | 1718 | { |
de43d7d0 | 1719 | target_mourn_inferior (); |
35f5886e FF |
1720 | } |
1721 | ||
1722 | /* | |
1723 | ||
1724 | LOCAL FUNCTION | |
1725 | ||
1726 | unconditionally_kill_inferior - terminate the inferior | |
1727 | ||
1728 | SYNOPSIS | |
1729 | ||
de43d7d0 | 1730 | static void unconditionally_kill_inferior (struct procinfo *) |
35f5886e FF |
1731 | |
1732 | DESCRIPTION | |
1733 | ||
de43d7d0 | 1734 | Kill the specified inferior. |
35f5886e FF |
1735 | |
1736 | NOTE | |
1737 | ||
1738 | A possibly useful enhancement would be to first try sending | |
1739 | the inferior a terminate signal, politely asking it to commit | |
de43d7d0 SG |
1740 | suicide, before we murder it (we could call that |
1741 | politely_kill_inferior()). | |
35f5886e FF |
1742 | |
1743 | */ | |
1744 | ||
1745 | static void | |
de43d7d0 SG |
1746 | unconditionally_kill_inferior (pi) |
1747 | struct procinfo *pi; | |
35f5886e | 1748 | { |
de43d7d0 | 1749 | int ppid; |
234a732d | 1750 | struct proc_ctl pctl; |
35f5886e | 1751 | |
de43d7d0 SG |
1752 | ppid = pi->prstatus.pr_ppid; |
1753 | ||
b6753b3f PS |
1754 | #ifdef PROCFS_NEED_CLEAR_CURSIG_FOR_KILL |
1755 | /* Alpha OSF/1-3.x procfs needs a clear of the current signal | |
1756 | before the PIOCKILL, otherwise it might generate a corrupted core | |
1757 | file for the inferior. */ | |
234a732d | 1758 | ioctl (pi->ctl_fd, PIOCSSIG, NULL); |
b6753b3f | 1759 | #endif |
2592eef8 | 1760 | #ifdef PROCFS_NEED_PIOCSSIG_FOR_KILL |
b6753b3f | 1761 | /* Alpha OSF/1-2.x procfs needs a PIOCSSIG call with a SIGKILL signal |
f5de4904 PS |
1762 | to kill the inferior, otherwise it might remain stopped with a |
1763 | pending SIGKILL. | |
2592eef8 PS |
1764 | We do not check the result of the PIOCSSIG, the inferior might have |
1765 | died already. */ | |
1766 | { | |
1767 | struct siginfo newsiginfo; | |
1768 | ||
1769 | memset ((char *) &newsiginfo, 0, sizeof (newsiginfo)); | |
234a732d | 1770 | newsiginfo.si_signo = SIGKILL; |
2592eef8 PS |
1771 | newsiginfo.si_code = 0; |
1772 | newsiginfo.si_errno = 0; | |
1773 | newsiginfo.si_pid = getpid (); | |
1774 | newsiginfo.si_uid = getuid (); | |
234a732d | 1775 | ioctl (pi->ctl_fd, PIOCSSIG, &newsiginfo); |
2592eef8 | 1776 | } |
234a732d GN |
1777 | #else /* PROCFS_NEED_PIOCSSIG_FOR_KILL */ |
1778 | procfs_write_pckill (pi); | |
1779 | #endif /* PROCFS_NEED_PIOCSSIG_FOR_KILL */ | |
2592eef8 | 1780 | |
de43d7d0 SG |
1781 | close_proc_file (pi); |
1782 | ||
1783 | /* Only wait() for our direct children. Our grandchildren zombies are killed | |
1784 | by the death of their parents. */ | |
1785 | ||
1786 | if (ppid == getpid()) | |
1787 | wait ((int *) 0); | |
35f5886e FF |
1788 | } |
1789 | ||
1790 | /* | |
1791 | ||
3fbdd536 | 1792 | LOCAL FUNCTION |
35f5886e | 1793 | |
3fbdd536 | 1794 | procfs_xfer_memory -- copy data to or from inferior memory space |
35f5886e FF |
1795 | |
1796 | SYNOPSIS | |
1797 | ||
3fbdd536 | 1798 | int procfs_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, |
35f5886e FF |
1799 | int dowrite, struct target_ops target) |
1800 | ||
1801 | DESCRIPTION | |
1802 | ||
1803 | Copy LEN bytes to/from inferior's memory starting at MEMADDR | |
1804 | from/to debugger memory starting at MYADDR. Copy from inferior | |
1805 | if DOWRITE is zero or to inferior if DOWRITE is nonzero. | |
1806 | ||
1807 | Returns the length copied, which is either the LEN argument or | |
3fbdd536 | 1808 | zero. This xfer function does not do partial moves, since procfs_ops |
35f5886e FF |
1809 | doesn't allow memory operations to cross below us in the target stack |
1810 | anyway. | |
1811 | ||
1812 | NOTES | |
1813 | ||
1814 | The /proc interface makes this an almost trivial task. | |
1815 | */ | |
1816 | ||
3fbdd536 JG |
1817 | static int |
1818 | procfs_xfer_memory (memaddr, myaddr, len, dowrite, target) | |
1ab3bf1b JG |
1819 | CORE_ADDR memaddr; |
1820 | char *myaddr; | |
1821 | int len; | |
1822 | int dowrite; | |
1823 | struct target_ops *target; /* ignored */ | |
35f5886e FF |
1824 | { |
1825 | int nbytes = 0; | |
de43d7d0 | 1826 | struct procinfo *pi; |
35f5886e | 1827 | |
de43d7d0 SG |
1828 | pi = current_procinfo; |
1829 | ||
234a732d | 1830 | if (lseek(pi->as_fd, (off_t) memaddr, SEEK_SET) == (off_t) memaddr) |
35f5886e FF |
1831 | { |
1832 | if (dowrite) | |
1833 | { | |
234a732d | 1834 | nbytes = write (pi->as_fd, myaddr, len); |
35f5886e FF |
1835 | } |
1836 | else | |
1837 | { | |
234a732d | 1838 | nbytes = read (pi->as_fd, myaddr, len); |
35f5886e FF |
1839 | } |
1840 | if (nbytes < 0) | |
1841 | { | |
1842 | nbytes = 0; | |
1843 | } | |
1844 | } | |
1845 | return (nbytes); | |
1846 | } | |
1847 | ||
1848 | /* | |
1849 | ||
3fbdd536 | 1850 | LOCAL FUNCTION |
35f5886e | 1851 | |
3fbdd536 | 1852 | procfs_store_registers -- copy register values back to inferior |
35f5886e FF |
1853 | |
1854 | SYNOPSIS | |
1855 | ||
3fbdd536 | 1856 | void procfs_store_registers (int regno) |
35f5886e FF |
1857 | |
1858 | DESCRIPTION | |
1859 | ||
1860 | Store our current register values back into the inferior. If | |
1861 | REGNO is -1 then store all the register, otherwise store just | |
1862 | the value specified by REGNO. | |
1863 | ||
1864 | NOTES | |
1865 | ||
1866 | If we are storing only a single register, we first have to get all | |
1867 | the current values from the process, overwrite the desired register | |
1868 | in the gregset with the one we want from gdb's registers, and then | |
1869 | send the whole set back to the process. For writing all the | |
1870 | registers, all we have to do is generate the gregset and send it to | |
1871 | the process. | |
1872 | ||
1873 | Also note that the process has to be stopped on an event of interest | |
1874 | for this to work, which basically means that it has to have been | |
1875 | run under the control of one of the other /proc ioctl calls and not | |
1876 | ptrace. Since we don't use ptrace anyway, we don't worry about this | |
1877 | fine point, but it is worth noting for future reference. | |
1878 | ||
1879 | Gdb is confused about what this function is supposed to return. | |
1880 | Some versions return a value, others return nothing. Some are | |
1881 | declared to return a value and actually return nothing. Gdb ignores | |
1882 | anything returned. (FIXME) | |
1883 | ||
1884 | */ | |
1885 | ||
3fbdd536 JG |
1886 | static void |
1887 | procfs_store_registers (regno) | |
1ab3bf1b | 1888 | int regno; |
35f5886e | 1889 | { |
de43d7d0 | 1890 | struct procinfo *pi; |
234a732d GN |
1891 | #ifdef PROCFS_USE_READ_WRITE |
1892 | struct greg_ctl greg; | |
1893 | struct fpreg_ctl fpreg; | |
1894 | #endif | |
de43d7d0 SG |
1895 | |
1896 | pi = current_procinfo; | |
1897 | ||
234a732d | 1898 | #ifdef PROCFS_USE_READ_WRITE |
35f5886e FF |
1899 | if (regno != -1) |
1900 | { | |
234a732d GN |
1901 | procfs_read_status (pi); |
1902 | memcpy ((char *) &greg.gregset, | |
1903 | (char *) &pi->prstatus.pr_lwp.pr_context.uc_mcontext.gregs, | |
1904 | sizeof (gregset_t)); | |
35f5886e | 1905 | } |
234a732d GN |
1906 | fill_gregset (&greg.gregset, regno); |
1907 | greg.cmd = PCSREG; | |
1908 | write (pi->ctl_fd, &greg, sizeof (greg)); | |
1909 | #else /* PROCFS_USE_READ_WRITE */ | |
1910 | if (regno != -1) | |
1911 | { | |
1912 | ioctl (pi->ctl_fd, PIOCGREG, &pi->gregset.gregset); | |
1913 | } | |
1914 | fill_gregset (&pi->gregset.gregset, regno); | |
1915 | ioctl (pi->ctl_fd, PIOCSREG, &pi->gregset.gregset); | |
1916 | #endif /* PROCFS_USE_READ_WRITE */ | |
35f5886e FF |
1917 | |
1918 | #if defined (FP0_REGNUM) | |
1919 | ||
1920 | /* Now repeat everything using the floating point register set, if the | |
1921 | target has floating point hardware. Since we ignore the returned value, | |
1922 | we'll never know whether it worked or not anyway. */ | |
1923 | ||
234a732d | 1924 | #ifdef PROCFS_USE_READ_WRITE |
35f5886e FF |
1925 | if (regno != -1) |
1926 | { | |
234a732d GN |
1927 | procfs_read_status (pi); |
1928 | memcpy ((char *) &fpreg.fpregset, | |
1929 | (char *) &pi->prstatus.pr_lwp.pr_context.uc_mcontext.fpregs, | |
1930 | sizeof (fpregset_t)); | |
35f5886e | 1931 | } |
234a732d GN |
1932 | fill_fpregset (&fpreg.fpregset, regno); |
1933 | fpreg.cmd = PCSFPREG; | |
1934 | write (pi->ctl_fd, &fpreg, sizeof (fpreg)); | |
1935 | #else /* PROCFS_USE_READ_WRITE */ | |
1936 | if (regno != -1) | |
1937 | { | |
1938 | ioctl (pi->ctl_fd, PIOCGFPREG, &pi->fpregset.fpregset); | |
1939 | } | |
1940 | fill_fpregset (&pi->fpregset.fpregset, regno); | |
1941 | ioctl (pi->ctl_fd, PIOCSFPREG, &pi->fpregset.fpregset); | |
1942 | #endif /* PROCFS_USE_READ_WRITE */ | |
35f5886e FF |
1943 | |
1944 | #endif /* FP0_REGNUM */ | |
1945 | ||
1946 | } | |
1947 | ||
1948 | /* | |
1949 | ||
3fbdd536 | 1950 | LOCAL FUNCTION |
35f5886e | 1951 | |
3780c337 | 1952 | init_procinfo - setup a procinfo struct and connect it to a process |
de43d7d0 SG |
1953 | |
1954 | SYNOPSIS | |
1955 | ||
3780c337 | 1956 | struct procinfo * init_procinfo (int pid) |
de43d7d0 SG |
1957 | |
1958 | DESCRIPTION | |
1959 | ||
eca4a350 SG |
1960 | Allocate a procinfo structure, open the /proc file and then set up the |
1961 | set of signals and faults that are to be traced. Returns a pointer to | |
3780c337 | 1962 | the new procinfo structure. |
de43d7d0 SG |
1963 | |
1964 | NOTES | |
1965 | ||
1966 | If proc_init_failed ever gets called, control returns to the command | |
1967 | processing loop via the standard error handling code. | |
1968 | ||
1969 | */ | |
1970 | ||
eca4a350 | 1971 | static struct procinfo * |
3780c337 | 1972 | init_procinfo (pid, kill) |
de43d7d0 | 1973 | int pid; |
3780c337 | 1974 | int kill; |
de43d7d0 | 1975 | { |
3780c337 MS |
1976 | struct procinfo *pi = (struct procinfo *) |
1977 | xmalloc (sizeof (struct procinfo)); | |
de43d7d0 | 1978 | |
3780c337 | 1979 | memset ((char *) pi, 0, sizeof (*pi)); |
234a732d | 1980 | if (!open_proc_file (pid, pi, O_RDWR, 1)) |
3780c337 | 1981 | proc_init_failed (pi, "can't open process file", kill); |
de43d7d0 | 1982 | |
8fc2b417 SG |
1983 | /* open_proc_file may modify pid. */ |
1984 | ||
1985 | pid = pi -> pid; | |
1986 | ||
de43d7d0 SG |
1987 | /* Add new process to process info list */ |
1988 | ||
1989 | pi->next = procinfo_list; | |
1990 | procinfo_list = pi; | |
1991 | ||
1992 | add_fd (pi); /* Add to list for poll/select */ | |
1993 | ||
3780c337 MS |
1994 | /* Remember some things about the inferior that we will, or might, change |
1995 | so that we can restore them when we detach. */ | |
234a732d | 1996 | #ifdef UNIXWARE |
3780c337 MS |
1997 | memcpy ((char *) &pi->saved_trace.sigset, |
1998 | (char *) &pi->prstatus.pr_sigtrace, sizeof (sigset_t)); | |
1999 | memcpy ((char *) &pi->saved_fltset.fltset, | |
2000 | (char *) &pi->prstatus.pr_flttrace, sizeof (fltset_t)); | |
2001 | memcpy ((char *) &pi->saved_entryset.sysset, | |
2002 | (char *) &pi->prstatus.pr_sysentry, sizeof (sysset_t)); | |
2003 | memcpy ((char *) &pi->saved_exitset.sysset, | |
2004 | (char *) &pi->prstatus.pr_sysexit, sizeof (sysset_t)); | |
2005 | ||
2006 | /* Set up trace and fault sets, as gdb expects them. */ | |
2007 | ||
234a732d | 2008 | prfillset (&sctl.sigset); |
3780c337 | 2009 | notice_signals (pi, &sctl); |
234a732d GN |
2010 | prfillset (&fctl.fltset); |
2011 | prdelset (&fctl.fltset, FLTPAGE); | |
3780c337 MS |
2012 | |
2013 | #else /* ! UNIXWARE */ | |
2014 | ioctl (pi->ctl_fd, PIOCGTRACE, &pi->saved_trace.sigset); | |
2015 | ioctl (pi->ctl_fd, PIOCGHOLD, &pi->saved_sighold.sigset); | |
2016 | ioctl (pi->ctl_fd, PIOCGFAULT, &pi->saved_fltset.fltset); | |
2017 | ioctl (pi->ctl_fd, PIOCGENTRY, &pi->saved_entryset.sysset); | |
2018 | ioctl (pi->ctl_fd, PIOCGEXIT, &pi->saved_exitset.sysset); | |
2019 | ||
2020 | /* Set up trace and fault sets, as gdb expects them. */ | |
2021 | ||
de43d7d0 SG |
2022 | memset ((char *) &pi->prrun, 0, sizeof (pi->prrun)); |
2023 | prfillset (&pi->prrun.pr_trace); | |
2024 | procfs_notice_signals (pid); | |
2025 | prfillset (&pi->prrun.pr_fault); | |
2026 | prdelset (&pi->prrun.pr_fault, FLTPAGE); | |
b9e58503 PS |
2027 | #ifdef PROCFS_DONT_TRACE_FAULTS |
2028 | premptyset (&pi->prrun.pr_fault); | |
2592eef8 | 2029 | #endif |
234a732d | 2030 | #endif /* UNIXWARE */ |
2592eef8 | 2031 | |
234a732d | 2032 | if (!procfs_read_status (pi)) |
3780c337 | 2033 | proc_init_failed (pi, "procfs_read_status failed", kill); |
8fc2b417 | 2034 | |
3780c337 MS |
2035 | return pi; |
2036 | } | |
2037 | ||
2038 | /* | |
2039 | ||
2040 | LOCAL FUNCTION | |
2041 | ||
2042 | create_procinfo - initialize access to a /proc entry | |
2043 | ||
2044 | SYNOPSIS | |
2045 | ||
2046 | struct procinfo * create_procinfo (int pid) | |
2047 | ||
2048 | DESCRIPTION | |
2049 | ||
2050 | Allocate a procinfo structure, open the /proc file and then set up the | |
2051 | set of signals and faults that are to be traced. Returns a pointer to | |
2052 | the new procinfo structure. | |
2053 | ||
2054 | NOTES | |
2055 | ||
2056 | If proc_init_failed ever gets called, control returns to the command | |
2057 | processing loop via the standard error handling code. | |
2058 | ||
2059 | */ | |
2060 | ||
2061 | static struct procinfo * | |
2062 | create_procinfo (pid) | |
2063 | int pid; | |
2064 | { | |
2065 | struct procinfo *pi; | |
2066 | struct sig_ctl sctl; | |
2067 | struct flt_ctl fctl; | |
2068 | ||
2069 | pi = find_procinfo (pid, 1); | |
2070 | if (pi != NULL) | |
2071 | return pi; /* All done! It already exists */ | |
2072 | ||
2073 | pi = init_procinfo (pid, 1); | |
8fc2b417 | 2074 | |
234a732d | 2075 | #ifndef UNIXWARE |
3780c337 MS |
2076 | /* A bug in Solaris (2.5 at least) causes PIOCWSTOP to hang on LWPs that are |
2077 | already stopped, even if they all have PR_ASYNC set. */ | |
8fc2b417 | 2078 | if (!(pi->prstatus.pr_flags & PR_STOPPED)) |
234a732d GN |
2079 | #endif |
2080 | if (!procfs_write_pcwstop (pi)) | |
3780c337 | 2081 | proc_init_failed (pi, "procfs_write_pcwstop failed", 1); |
de43d7d0 | 2082 | |
234a732d GN |
2083 | #ifdef PROCFS_USE_READ_WRITE |
2084 | fctl.cmd = PCSFAULT; | |
2085 | if (write (pi->ctl_fd, (char *) &fctl, sizeof (struct flt_ctl)) < 0) | |
3780c337 | 2086 | proc_init_failed (pi, "PCSFAULT failed", 1); |
234a732d GN |
2087 | #else |
2088 | if (ioctl (pi->ctl_fd, PIOCSFAULT, &pi->prrun.pr_fault) < 0) | |
3780c337 | 2089 | proc_init_failed (pi, "PIOCSFAULT failed", 1); |
234a732d | 2090 | #endif |
eca4a350 SG |
2091 | |
2092 | return pi; | |
de43d7d0 SG |
2093 | } |
2094 | ||
2095 | /* | |
2096 | ||
8fc2b417 SG |
2097 | LOCAL FUNCTION |
2098 | ||
2099 | procfs_exit_handler - handle entry into the _exit syscall | |
2100 | ||
2101 | SYNOPSIS | |
2102 | ||
2103 | int procfs_exit_handler (pi, syscall_num, why, rtnvalp, statvalp) | |
2104 | ||
2105 | DESCRIPTION | |
2106 | ||
2107 | This routine is called when an inferior process enters the _exit() | |
2108 | system call. It continues the process, and then collects the exit | |
2109 | status and pid which are returned in *statvalp and *rtnvalp. After | |
2110 | that it returns non-zero to indicate that procfs_wait should wake up. | |
2111 | ||
2112 | NOTES | |
2113 | There is probably a better way to do this. | |
2114 | ||
2115 | */ | |
2116 | ||
2117 | static int | |
2118 | procfs_exit_handler (pi, syscall_num, why, rtnvalp, statvalp) | |
2119 | struct procinfo *pi; | |
2120 | int syscall_num; | |
2121 | int why; | |
2122 | int *rtnvalp; | |
2123 | int *statvalp; | |
2124 | { | |
3780c337 MS |
2125 | struct procinfo *temp_pi, *next_pi; |
2126 | ||
8fc2b417 SG |
2127 | pi->prrun.pr_flags = PRCFAULT; |
2128 | ||
234a732d | 2129 | if (ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0) |
8fc2b417 SG |
2130 | perror_with_name (pi->pathname); |
2131 | ||
3780c337 MS |
2132 | if (attach_flag) |
2133 | { | |
2134 | /* Claim it exited (don't call wait). */ | |
2135 | if (info_verbose) | |
2136 | printf_filtered ("(attached process has exited)\n"); | |
2137 | *statvalp = 0; | |
2138 | *rtnvalp = inferior_pid; | |
2139 | } | |
2140 | else | |
2141 | { | |
2142 | *rtnvalp = wait (statvalp); | |
2143 | if (*rtnvalp >= 0) | |
2144 | *rtnvalp = pi->pid; | |
2145 | } | |
8fc2b417 | 2146 | |
3780c337 MS |
2147 | /* Close ALL open proc file handles, |
2148 | except the one that called SYS_exit. */ | |
2149 | for (temp_pi = procinfo_list; temp_pi; temp_pi = next_pi) | |
2150 | { | |
2151 | next_pi = temp_pi->next; | |
2152 | if (temp_pi == pi) | |
2153 | continue; /* Handled below */ | |
2154 | close_proc_file (temp_pi); | |
2155 | } | |
8fc2b417 SG |
2156 | return 1; |
2157 | } | |
2158 | ||
2159 | /* | |
2160 | ||
2161 | LOCAL FUNCTION | |
2162 | ||
2163 | procfs_exec_handler - handle exit from the exec family of syscalls | |
2164 | ||
2165 | SYNOPSIS | |
2166 | ||
2167 | int procfs_exec_handler (pi, syscall_num, why, rtnvalp, statvalp) | |
2168 | ||
2169 | DESCRIPTION | |
2170 | ||
2171 | This routine is called when an inferior process is about to finish any | |
2172 | of the exec() family of system calls. It pretends that we got a | |
2173 | SIGTRAP (for compatibility with ptrace behavior), and returns non-zero | |
2174 | to tell procfs_wait to wake up. | |
2175 | ||
2176 | NOTES | |
2177 | This need for compatibility with ptrace is questionable. In the | |
2178 | future, it shouldn't be necessary. | |
2179 | ||
2180 | */ | |
2181 | ||
2182 | static int | |
2183 | procfs_exec_handler (pi, syscall_num, why, rtnvalp, statvalp) | |
2184 | struct procinfo *pi; | |
2185 | int syscall_num; | |
2186 | int why; | |
2187 | int *rtnvalp; | |
2188 | int *statvalp; | |
2189 | { | |
2190 | *statvalp = (SIGTRAP << 8) | 0177; | |
2191 | ||
2192 | return 1; | |
2193 | } | |
2194 | ||
234a732d GN |
2195 | #if defined(SYS_sproc) && !defined(UNIXWARE) |
2196 | /* IRIX lwp creation system call */ | |
8fc2b417 SG |
2197 | |
2198 | /* | |
2199 | ||
2200 | LOCAL FUNCTION | |
2201 | ||
2202 | procfs_sproc_handler - handle exit from the sproc syscall | |
2203 | ||
2204 | SYNOPSIS | |
2205 | ||
2206 | int procfs_sproc_handler (pi, syscall_num, why, rtnvalp, statvalp) | |
2207 | ||
2208 | DESCRIPTION | |
2209 | ||
2210 | This routine is called when an inferior process is about to finish an | |
2211 | sproc() system call. This is the system call that IRIX uses to create | |
2212 | a lightweight process. When the target process gets this event, we can | |
2213 | look at rval1 to find the new child processes ID, and create a new | |
2214 | procinfo struct from that. | |
2215 | ||
2216 | After that, it pretends that we got a SIGTRAP, and returns non-zero | |
2217 | to tell procfs_wait to wake up. Subsequently, wait_for_inferior gets | |
2218 | woken up, sees the new process and continues it. | |
2219 | ||
2220 | NOTES | |
2221 | We actually never see the child exiting from sproc because we will | |
2222 | shortly stop the child with PIOCSTOP, which is then registered as the | |
2223 | event of interest. | |
2224 | */ | |
2225 | ||
2226 | static int | |
2227 | procfs_sproc_handler (pi, syscall_num, why, rtnvalp, statvalp) | |
2228 | struct procinfo *pi; | |
2229 | int syscall_num; | |
2230 | int why; | |
2231 | int *rtnvalp; | |
2232 | int *statvalp; | |
2233 | { | |
2234 | /* We've just detected the completion of an sproc system call. Now we need to | |
2235 | setup a procinfo struct for this thread, and notify the thread system of the | |
2236 | new arrival. */ | |
2237 | ||
2238 | /* If sproc failed, then nothing interesting happened. Continue the process | |
2239 | and go back to sleep. */ | |
2240 | ||
2241 | if (pi->prstatus.pr_errno != 0) | |
2242 | { | |
2243 | pi->prrun.pr_flags &= PRSTEP; | |
2244 | pi->prrun.pr_flags |= PRCFAULT; | |
2245 | ||
234a732d | 2246 | if (ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0) |
8fc2b417 SG |
2247 | perror_with_name (pi->pathname); |
2248 | ||
2249 | return 0; | |
2250 | } | |
2251 | ||
2252 | /* At this point, the new thread is stopped at it's first instruction, and | |
2253 | the parent is stopped at the exit from sproc. */ | |
2254 | ||
2255 | /* Notify the caller of the arrival of a new thread. */ | |
2256 | create_procinfo (pi->prstatus.pr_rval1); | |
2257 | ||
2258 | *rtnvalp = pi->prstatus.pr_rval1; | |
2259 | *statvalp = (SIGTRAP << 8) | 0177; | |
2260 | ||
2261 | return 1; | |
2262 | } | |
2263 | ||
2264 | /* | |
2265 | ||
2266 | LOCAL FUNCTION | |
2267 | ||
2268 | procfs_fork_handler - handle exit from the fork syscall | |
2269 | ||
2270 | SYNOPSIS | |
2271 | ||
2272 | int procfs_fork_handler (pi, syscall_num, why, rtnvalp, statvalp) | |
2273 | ||
2274 | DESCRIPTION | |
2275 | ||
2276 | This routine is called when an inferior process is about to finish a | |
2277 | fork() system call. We will open up the new process, and then close | |
2278 | it, which releases it from the clutches of the debugger. | |
2279 | ||
2280 | After that, we continue the target process as though nothing had | |
2281 | happened. | |
2282 | ||
2283 | NOTES | |
2284 | This is necessary for IRIX because we have to set PR_FORK in order | |
2285 | to catch the creation of lwps (via sproc()). When an actual fork | |
2286 | occurs, it becomes necessary to reset the forks debugger flags and | |
2287 | continue it because we can't hack multiple processes yet. | |
2288 | */ | |
2289 | ||
2290 | static int | |
2291 | procfs_fork_handler (pi, syscall_num, why, rtnvalp, statvalp) | |
2292 | struct procinfo *pi; | |
2293 | int syscall_num; | |
2294 | int why; | |
2295 | int *rtnvalp; | |
2296 | int *statvalp; | |
2297 | { | |
2298 | struct procinfo *pitemp; | |
2299 | ||
2300 | /* At this point, we've detected the completion of a fork (or vfork) call in | |
2301 | our child. The grandchild is also stopped because we set inherit-on-fork | |
2302 | earlier. (Note that nobody has the grandchilds' /proc file open at this | |
2303 | point.) We will release the grandchild from the debugger by opening it's | |
2304 | /proc file and then closing it. Since run-on-last-close is set, the | |
2305 | grandchild continues on its' merry way. */ | |
2306 | ||
2307 | ||
2308 | pitemp = create_procinfo (pi->prstatus.pr_rval1); | |
2309 | if (pitemp) | |
2310 | close_proc_file (pitemp); | |
2311 | ||
234a732d | 2312 | if (ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0) |
8fc2b417 SG |
2313 | perror_with_name (pi->pathname); |
2314 | ||
2315 | return 0; | |
2316 | } | |
234a732d | 2317 | #endif /* SYS_sproc && !UNIXWARE */ |
8fc2b417 SG |
2318 | |
2319 | /* | |
2320 | ||
de43d7d0 SG |
2321 | LOCAL FUNCTION |
2322 | ||
3780c337 | 2323 | procfs_set_inferior_syscall_traps - setup the syscall traps |
35f5886e FF |
2324 | |
2325 | SYNOPSIS | |
2326 | ||
3780c337 | 2327 | void procfs_set_inferior_syscall_traps (struct procinfo *pip) |
35f5886e FF |
2328 | |
2329 | DESCRIPTION | |
2330 | ||
3780c337 MS |
2331 | Called for each "procinfo" (process, thread, or LWP) in the |
2332 | inferior, to register for notification of and handlers for | |
2333 | syscall traps in the inferior. | |
cc221e76 | 2334 | |
35f5886e FF |
2335 | */ |
2336 | ||
3780c337 MS |
2337 | static void |
2338 | procfs_set_inferior_syscall_traps (pip) | |
2339 | struct procinfo *pip; | |
35f5886e | 2340 | { |
8fc2b417 SG |
2341 | procfs_set_syscall_trap (pip, SYS_exit, PROCFS_SYSCALL_ENTRY, |
2342 | procfs_exit_handler); | |
2343 | ||
b6823237 | 2344 | #ifndef PRFS_STOPEXEC |
8fc2b417 SG |
2345 | #ifdef SYS_exec |
2346 | procfs_set_syscall_trap (pip, SYS_exec, PROCFS_SYSCALL_EXIT, | |
2347 | procfs_exec_handler); | |
2348 | #endif | |
2349 | #ifdef SYS_execv | |
2350 | procfs_set_syscall_trap (pip, SYS_execv, PROCFS_SYSCALL_EXIT, | |
2351 | procfs_exec_handler); | |
2352 | #endif | |
2353 | #ifdef SYS_execve | |
2354 | procfs_set_syscall_trap (pip, SYS_execve, PROCFS_SYSCALL_EXIT, | |
2355 | procfs_exec_handler); | |
2356 | #endif | |
b6823237 | 2357 | #endif /* PRFS_STOPEXEC */ |
8fc2b417 SG |
2358 | |
2359 | /* Setup traps on exit from sproc() */ | |
2360 | ||
2361 | #ifdef SYS_sproc | |
2362 | procfs_set_syscall_trap (pip, SYS_sproc, PROCFS_SYSCALL_EXIT, | |
2363 | procfs_sproc_handler); | |
2364 | procfs_set_syscall_trap (pip, SYS_fork, PROCFS_SYSCALL_EXIT, | |
2365 | procfs_fork_handler); | |
2366 | #ifdef SYS_vfork | |
2367 | procfs_set_syscall_trap (pip, SYS_vfork, PROCFS_SYSCALL_EXIT, | |
2368 | procfs_fork_handler); | |
2369 | #endif | |
2370 | /* Turn on inherit-on-fork flag so that all children of the target process | |
2371 | start with tracing flags set. This allows us to trap lwp creation. Note | |
2372 | that we also have to trap on fork and vfork in order to disable all tracing | |
2373 | in the targets child processes. */ | |
2374 | ||
234a732d | 2375 | modify_inherit_on_fork_flag (pip->ctl_fd, 1); |
8fc2b417 SG |
2376 | #endif |
2377 | ||
2378 | #ifdef SYS_lwp_create | |
2379 | procfs_set_syscall_trap (pip, SYS_lwp_create, PROCFS_SYSCALL_EXIT, | |
2380 | procfs_lwp_creation_handler); | |
2381 | #endif | |
3780c337 MS |
2382 | } |
2383 | ||
2384 | /* | |
2385 | ||
2386 | LOCAL FUNCTION | |
2387 | ||
2388 | procfs_init_inferior - initialize target vector and access to a | |
2389 | /proc entry | |
2390 | ||
2391 | SYNOPSIS | |
2392 | ||
2393 | int procfs_init_inferior (int pid) | |
2394 | ||
2395 | DESCRIPTION | |
2396 | ||
2397 | When gdb starts an inferior, this function is called in the parent | |
2398 | process immediately after the fork. It waits for the child to stop | |
2399 | on the return from the exec system call (the child itself takes care | |
2400 | of ensuring that this is set up), then sets up the set of signals | |
2401 | and faults that are to be traced. Returns the pid, which may have had | |
2402 | the thread-id added to it. | |
2403 | ||
2404 | NOTES | |
2405 | ||
2406 | If proc_init_failed ever gets called, control returns to the command | |
2407 | processing loop via the standard error handling code. | |
2408 | ||
2409 | */ | |
2410 | ||
2411 | static int | |
2412 | procfs_init_inferior (pid) | |
2413 | int pid; | |
2414 | { | |
2415 | struct procinfo *pip; | |
2416 | ||
2417 | push_target (&procfs_ops); | |
2418 | ||
2419 | pip = create_procinfo (pid); | |
2420 | ||
2421 | procfs_set_inferior_syscall_traps (pip); | |
8fc2b417 SG |
2422 | |
2423 | /* create_procinfo may change the pid, so we have to update inferior_pid | |
2424 | here before calling other gdb routines that need the right pid. */ | |
2425 | ||
2426 | pid = pip -> pid; | |
2427 | inferior_pid = pid; | |
2428 | ||
2429 | add_thread (pip -> pid); /* Setup initial thread */ | |
bc28a06c | 2430 | |
2592eef8 PS |
2431 | #ifdef START_INFERIOR_TRAPS_EXPECTED |
2432 | startup_inferior (START_INFERIOR_TRAPS_EXPECTED); | |
2433 | #else | |
bc28a06c JK |
2434 | /* One trap to exec the shell, one to exec the program being debugged. */ |
2435 | startup_inferior (2); | |
2592eef8 | 2436 | #endif |
8fc2b417 SG |
2437 | |
2438 | return pid; | |
35f5886e FF |
2439 | } |
2440 | ||
2441 | /* | |
2442 | ||
cc221e76 FF |
2443 | GLOBAL FUNCTION |
2444 | ||
3950a34e | 2445 | procfs_notice_signals |
cc221e76 FF |
2446 | |
2447 | SYNOPSIS | |
2448 | ||
952a820e | 2449 | static void procfs_notice_signals (int pid); |
cc221e76 FF |
2450 | |
2451 | DESCRIPTION | |
2452 | ||
2453 | When the user changes the state of gdb's signal handling via the | |
2454 | "handle" command, this function gets called to see if any change | |
2455 | in the /proc interface is required. It is also called internally | |
2456 | by other /proc interface functions to initialize the state of | |
2457 | the traced signal set. | |
2458 | ||
2459 | One thing it does is that signals for which the state is "nostop", | |
2460 | "noprint", and "pass", have their trace bits reset in the pr_trace | |
2461 | field, so that they are no longer traced. This allows them to be | |
2462 | delivered directly to the inferior without the debugger ever being | |
2463 | involved. | |
2464 | */ | |
2465 | ||
3950a34e | 2466 | static void |
de43d7d0 | 2467 | procfs_notice_signals (pid) |
952a820e | 2468 | int pid; |
cc221e76 | 2469 | { |
de43d7d0 | 2470 | struct procinfo *pi; |
234a732d | 2471 | struct sig_ctl sctl; |
cc221e76 | 2472 | |
de43d7d0 SG |
2473 | pi = find_procinfo (pid, 0); |
2474 | ||
234a732d GN |
2475 | #ifdef UNIXWARE |
2476 | premptyset (&sctl.sigset); | |
2477 | #else | |
234c4096 | 2478 | sctl.sigset = pi->prrun.pr_trace; |
234a732d GN |
2479 | #endif |
2480 | ||
2481 | notice_signals (pi, &sctl); | |
95b71071 PS |
2482 | |
2483 | #ifndef UNIXWARE | |
2484 | pi->prrun.pr_trace = sctl.sigset; | |
2485 | #endif | |
234a732d GN |
2486 | } |
2487 | ||
2488 | static void | |
2489 | notice_signals (pi, sctl) | |
2490 | struct procinfo *pi; | |
2491 | struct sig_ctl *sctl; | |
2492 | { | |
2493 | int signo; | |
2494 | ||
de43d7d0 | 2495 | for (signo = 0; signo < NSIG; signo++) |
cc221e76 | 2496 | { |
67ac9759 JK |
2497 | if (signal_stop_state (target_signal_from_host (signo)) == 0 && |
2498 | signal_print_state (target_signal_from_host (signo)) == 0 && | |
2499 | signal_pass_state (target_signal_from_host (signo)) == 1) | |
cc221e76 | 2500 | { |
234a732d | 2501 | prdelset (&sctl->sigset, signo); |
cc221e76 | 2502 | } |
de43d7d0 | 2503 | else |
cc221e76 | 2504 | { |
234a732d | 2505 | praddset (&sctl->sigset, signo); |
cc221e76 FF |
2506 | } |
2507 | } | |
234a732d GN |
2508 | #ifdef PROCFS_USE_READ_WRITE |
2509 | sctl->cmd = PCSTRACE; | |
2510 | if (write (pi->ctl_fd, (char *) sctl, sizeof (struct sig_ctl)) < 0) | |
2511 | #else | |
2512 | if (ioctl (pi->ctl_fd, PIOCSTRACE, &sctl->sigset)) | |
2513 | #endif | |
de43d7d0 SG |
2514 | { |
2515 | print_sys_errmsg ("PIOCSTRACE failed", errno); | |
2516 | } | |
cc221e76 FF |
2517 | } |
2518 | ||
2519 | /* | |
2520 | ||
3fbdd536 | 2521 | LOCAL FUNCTION |
35f5886e FF |
2522 | |
2523 | proc_set_exec_trap -- arrange for exec'd child to halt at startup | |
2524 | ||
2525 | SYNOPSIS | |
2526 | ||
2527 | void proc_set_exec_trap (void) | |
2528 | ||
2529 | DESCRIPTION | |
2530 | ||
2531 | This function is called in the child process when starting up | |
2532 | an inferior, prior to doing the exec of the actual inferior. | |
2533 | It sets the child process's exitset to make exit from the exec | |
2534 | system call an event of interest to stop on, and then simply | |
2535 | returns. The child does the exec, the system call returns, and | |
2536 | the child stops at the first instruction, ready for the gdb | |
2537 | parent process to take control of it. | |
2538 | ||
2539 | NOTE | |
2540 | ||
2541 | We need to use all local variables since the child may be sharing | |
2542 | it's data space with the parent, if vfork was used rather than | |
2543 | fork. | |
cc221e76 FF |
2544 | |
2545 | Also note that we want to turn off the inherit-on-fork flag in | |
2546 | the child process so that any grand-children start with all | |
2547 | tracing flags cleared. | |
35f5886e FF |
2548 | */ |
2549 | ||
3fbdd536 | 2550 | static void |
1ab3bf1b | 2551 | proc_set_exec_trap () |
35f5886e | 2552 | { |
234a732d GN |
2553 | struct sys_ctl exitset; |
2554 | struct sys_ctl entryset; | |
2555 | char procname[MAX_PROC_NAME_SIZE]; | |
35f5886e FF |
2556 | int fd; |
2557 | ||
234a732d GN |
2558 | sprintf (procname, CTL_PROC_NAME_FMT, getpid ()); |
2559 | #ifdef UNIXWARE | |
2560 | if ((fd = open (procname, O_WRONLY)) < 0) | |
2561 | #else | |
35f5886e | 2562 | if ((fd = open (procname, O_RDWR)) < 0) |
234a732d | 2563 | #endif |
35f5886e FF |
2564 | { |
2565 | perror (procname); | |
199b2450 | 2566 | gdb_flush (gdb_stderr); |
35f5886e FF |
2567 | _exit (127); |
2568 | } | |
234a732d GN |
2569 | premptyset (&exitset.sysset); |
2570 | premptyset (&entryset.sysset); | |
407a8389 | 2571 | |
b6823237 | 2572 | #ifdef PRFS_STOPEXEC |
2592eef8 | 2573 | /* Under Alpha OSF/1 we have to use a PIOCSSPCACT ioctl to trace |
b6823237 | 2574 | exits from exec system calls because of the user level loader. */ |
2592eef8 PS |
2575 | { |
2576 | int prfs_flags; | |
2577 | ||
2578 | if (ioctl (fd, PIOCGSPCACT, &prfs_flags) < 0) | |
2579 | { | |
2580 | perror (procname); | |
2581 | gdb_flush (gdb_stderr); | |
2582 | _exit (127); | |
2583 | } | |
b6823237 | 2584 | prfs_flags |= PRFS_STOPEXEC; |
2592eef8 PS |
2585 | if (ioctl (fd, PIOCSSPCACT, &prfs_flags) < 0) |
2586 | { | |
2587 | perror (procname); | |
2588 | gdb_flush (gdb_stderr); | |
2589 | _exit (127); | |
2590 | } | |
2591 | } | |
b6823237 | 2592 | #else /* PRFS_STOPEXEC */ |
cc221e76 FF |
2593 | /* GW: Rationale... |
2594 | Not all systems with /proc have all the exec* syscalls with the same | |
2595 | names. On the SGI, for example, there is no SYS_exec, but there | |
2596 | *is* a SYS_execv. So, we try to account for that. */ | |
2597 | ||
407a8389 | 2598 | #ifdef SYS_exec |
234a732d | 2599 | praddset (&exitset.sysset, SYS_exec); |
407a8389 SG |
2600 | #endif |
2601 | #ifdef SYS_execve | |
234a732d | 2602 | praddset (&exitset.sysset, SYS_execve); |
407a8389 SG |
2603 | #endif |
2604 | #ifdef SYS_execv | |
234a732d | 2605 | praddset (&exitset.sysset, SYS_execv); |
407a8389 SG |
2606 | #endif |
2607 | ||
234a732d GN |
2608 | #ifdef PROCFS_USE_READ_WRITE |
2609 | exitset.cmd = PCSEXIT; | |
2610 | if (write (fd, (char *) &exitset, sizeof (struct sys_ctl)) < 0) | |
2611 | #else | |
2612 | if (ioctl (fd, PIOCSEXIT, &exitset.sysset) < 0) | |
2613 | #endif | |
35f5886e FF |
2614 | { |
2615 | perror (procname); | |
199b2450 | 2616 | gdb_flush (gdb_stderr); |
35f5886e FF |
2617 | _exit (127); |
2618 | } | |
b6823237 | 2619 | #endif /* PRFS_STOPEXEC */ |
cc221e76 | 2620 | |
234a732d | 2621 | praddset (&entryset.sysset, SYS_exit); |
fb63d460 | 2622 | |
234a732d GN |
2623 | #ifdef PROCFS_USE_READ_WRITE |
2624 | entryset.cmd = PCSENTRY; | |
2625 | if (write (fd, (char *) &entryset, sizeof (struct sys_ctl)) < 0) | |
2626 | #else | |
2627 | if (ioctl (fd, PIOCSENTRY, &entryset.sysset) < 0) | |
2628 | #endif | |
fb63d460 SG |
2629 | { |
2630 | perror (procname); | |
199b2450 | 2631 | gdb_flush (gdb_stderr); |
fb63d460 SG |
2632 | _exit (126); |
2633 | } | |
2634 | ||
cc221e76 FF |
2635 | /* Turn off inherit-on-fork flag so that all grand-children of gdb |
2636 | start with tracing flags cleared. */ | |
2637 | ||
8fc2b417 | 2638 | modify_inherit_on_fork_flag (fd, 0); |
ec8ceca3 JG |
2639 | |
2640 | /* Turn on run-on-last-close flag so that this process will not hang | |
2641 | if GDB goes away for some reason. */ | |
2642 | ||
8fc2b417 SG |
2643 | modify_run_on_last_close_flag (fd, 1); |
2644 | ||
2645 | #ifdef PR_ASYNC | |
ec8ceca3 | 2646 | { |
8fc2b417 | 2647 | long pr_flags; |
234a732d | 2648 | struct proc_ctl pctl; |
8fc2b417 SG |
2649 | |
2650 | /* Solaris needs this to make procfs treat all threads seperately. Without | |
2651 | this, all threads halt whenever something happens to any thread. Since | |
2652 | GDB wants to control all this itself, it needs to set PR_ASYNC. */ | |
2653 | ||
2654 | pr_flags = PR_ASYNC; | |
234a732d GN |
2655 | #ifdef PROCFS_USE_READ_WRITE |
2656 | pctl.cmd = PCSET; | |
2657 | pctl.data = PR_FORK|PR_ASYNC; | |
2658 | write (fd, (char *) &pctl, sizeof (struct proc_ctl)); | |
2659 | #else | |
8fc2b417 | 2660 | ioctl (fd, PIOCSET, &pr_flags); |
234a732d | 2661 | #endif |
ec8ceca3 | 2662 | } |
8fc2b417 | 2663 | #endif /* PR_ASYNC */ |
35f5886e FF |
2664 | } |
2665 | ||
f8b76e70 FF |
2666 | /* |
2667 | ||
a39ad5ce FF |
2668 | GLOBAL FUNCTION |
2669 | ||
2670 | proc_iterate_over_mappings -- call function for every mapped space | |
2671 | ||
2672 | SYNOPSIS | |
2673 | ||
2674 | int proc_iterate_over_mappings (int (*func)()) | |
2675 | ||
2676 | DESCRIPTION | |
2677 | ||
2678 | Given a pointer to a function, call that function for every | |
2679 | mapped address space, passing it an open file descriptor for | |
2680 | the file corresponding to that mapped address space (if any) | |
2681 | and the base address of the mapped space. Quit when we hit | |
2682 | the end of the mappings or the function returns nonzero. | |
2683 | */ | |
2684 | ||
234a732d GN |
2685 | #ifdef UNIXWARE |
2686 | int | |
2687 | proc_iterate_over_mappings (func) | |
2688 | int (*func) PARAMS ((int, CORE_ADDR)); | |
2689 | { | |
2690 | int nmap; | |
2691 | int fd; | |
2692 | int funcstat = 0; | |
2693 | prmap_t *prmaps; | |
2694 | prmap_t *prmap; | |
2695 | struct procinfo *pi; | |
2696 | struct stat sbuf; | |
2697 | ||
2698 | pi = current_procinfo; | |
2699 | ||
2700 | if (fstat (pi->map_fd, &sbuf) < 0) | |
2701 | return 0; | |
2702 | ||
2703 | nmap = sbuf.st_size / sizeof (prmap_t); | |
2704 | prmaps = (prmap_t *) alloca (nmap * sizeof(prmap_t)); | |
2705 | if ((lseek (pi->map_fd, 0, SEEK_SET) == 0) && | |
2706 | (read (pi->map_fd, (char *) prmaps, nmap * sizeof (prmap_t)) == | |
2707 | (nmap * sizeof (prmap_t)))) | |
2708 | { | |
2709 | int i = 0; | |
2710 | for (prmap = prmaps; i < nmap && funcstat == 0; ++prmap, ++i) | |
2711 | { | |
2712 | char name[sizeof ("/proc/1234567890/object") + | |
2713 | sizeof (prmap->pr_mapname)]; | |
2714 | sprintf (name, "/proc/%d/object/%s", pi->pid, prmap->pr_mapname); | |
2715 | if ((fd = open (name, O_RDONLY)) == -1) | |
2716 | { | |
2717 | funcstat = 1; | |
2718 | break; | |
2719 | } | |
2720 | funcstat = (*func) (fd, (CORE_ADDR) prmap->pr_vaddr); | |
2721 | close (fd); | |
2722 | } | |
2723 | } | |
2724 | return (funcstat); | |
2725 | } | |
2726 | #else /* UNIXWARE */ | |
a39ad5ce | 2727 | int |
1ab3bf1b JG |
2728 | proc_iterate_over_mappings (func) |
2729 | int (*func) PARAMS ((int, CORE_ADDR)); | |
a39ad5ce FF |
2730 | { |
2731 | int nmap; | |
2732 | int fd; | |
2733 | int funcstat = 0; | |
2734 | struct prmap *prmaps; | |
2735 | struct prmap *prmap; | |
de43d7d0 SG |
2736 | struct procinfo *pi; |
2737 | ||
2738 | pi = current_procinfo; | |
a39ad5ce | 2739 | |
234a732d | 2740 | if (ioctl (pi->map_fd, PIOCNMAP, &nmap) == 0) |
a39ad5ce | 2741 | { |
1ab3bf1b | 2742 | prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps)); |
234a732d | 2743 | if (ioctl (pi->map_fd, PIOCMAP, prmaps) == 0) |
a39ad5ce FF |
2744 | { |
2745 | for (prmap = prmaps; prmap -> pr_size && funcstat == 0; ++prmap) | |
2746 | { | |
de43d7d0 | 2747 | fd = proc_address_to_fd (pi, (CORE_ADDR) prmap -> pr_vaddr, 0); |
1ab3bf1b | 2748 | funcstat = (*func) (fd, (CORE_ADDR) prmap -> pr_vaddr); |
a39ad5ce FF |
2749 | close (fd); |
2750 | } | |
2751 | } | |
2752 | } | |
2753 | return (funcstat); | |
2754 | } | |
234a732d | 2755 | #endif /* UNIXWARE */ |
a39ad5ce | 2756 | |
3fbdd536 | 2757 | #if 0 /* Currently unused */ |
a39ad5ce FF |
2758 | /* |
2759 | ||
f8b76e70 FF |
2760 | GLOBAL FUNCTION |
2761 | ||
2762 | proc_base_address -- find base address for segment containing address | |
2763 | ||
2764 | SYNOPSIS | |
2765 | ||
2766 | CORE_ADDR proc_base_address (CORE_ADDR addr) | |
2767 | ||
2768 | DESCRIPTION | |
2769 | ||
2770 | Given an address of a location in the inferior, find and return | |
2771 | the base address of the mapped segment containing that address. | |
2772 | ||
2773 | This is used for example, by the shared library support code, | |
2774 | where we have the pc value for some location in the shared library | |
2775 | where we are stopped, and need to know the base address of the | |
2776 | segment containing that address. | |
2777 | */ | |
2778 | ||
f8b76e70 | 2779 | CORE_ADDR |
1ab3bf1b | 2780 | proc_base_address (addr) |
cc221e76 | 2781 | CORE_ADDR addr; |
f8b76e70 FF |
2782 | { |
2783 | int nmap; | |
2784 | struct prmap *prmaps; | |
2785 | struct prmap *prmap; | |
2786 | CORE_ADDR baseaddr = 0; | |
de43d7d0 | 2787 | struct procinfo *pi; |
f8b76e70 | 2788 | |
de43d7d0 SG |
2789 | pi = current_procinfo; |
2790 | ||
234a732d | 2791 | if (ioctl (pi->map_fd, PIOCNMAP, &nmap) == 0) |
f8b76e70 | 2792 | { |
1ab3bf1b | 2793 | prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps)); |
234a732d | 2794 | if (ioctl (pi->map_fd, PIOCMAP, prmaps) == 0) |
f8b76e70 FF |
2795 | { |
2796 | for (prmap = prmaps; prmap -> pr_size; ++prmap) | |
2797 | { | |
2798 | if ((prmap -> pr_vaddr <= (caddr_t) addr) && | |
2799 | (prmap -> pr_vaddr + prmap -> pr_size > (caddr_t) addr)) | |
2800 | { | |
2801 | baseaddr = (CORE_ADDR) prmap -> pr_vaddr; | |
2802 | break; | |
2803 | } | |
2804 | } | |
2805 | } | |
2806 | } | |
2807 | return (baseaddr); | |
2808 | } | |
2809 | ||
1ab3bf1b JG |
2810 | #endif /* 0 */ |
2811 | ||
f8b76e70 FF |
2812 | /* |
2813 | ||
cc221e76 | 2814 | LOCAL FUNCTION |
f8b76e70 FF |
2815 | |
2816 | proc_address_to_fd -- return open fd for file mapped to address | |
2817 | ||
2818 | SYNOPSIS | |
2819 | ||
de43d7d0 | 2820 | int proc_address_to_fd (struct procinfo *pi, CORE_ADDR addr, complain) |
f8b76e70 FF |
2821 | |
2822 | DESCRIPTION | |
2823 | ||
2824 | Given an address in the current inferior's address space, use the | |
2825 | /proc interface to find an open file descriptor for the file that | |
2826 | this address was mapped in from. Return -1 if there is no current | |
2827 | inferior. Print a warning message if there is an inferior but | |
2828 | the address corresponds to no file (IE a bogus address). | |
2829 | ||
2830 | */ | |
2831 | ||
1ab3bf1b | 2832 | static int |
de43d7d0 SG |
2833 | proc_address_to_fd (pi, addr, complain) |
2834 | struct procinfo *pi; | |
1ab3bf1b JG |
2835 | CORE_ADDR addr; |
2836 | int complain; | |
f8b76e70 FF |
2837 | { |
2838 | int fd = -1; | |
2839 | ||
234a732d | 2840 | if ((fd = ioctl (pi->ctl_fd, PIOCOPENM, (caddr_t *) &addr)) < 0) |
f8b76e70 | 2841 | { |
de43d7d0 | 2842 | if (complain) |
f8b76e70 | 2843 | { |
de43d7d0 SG |
2844 | print_sys_errmsg (pi->pathname, errno); |
2845 | warning ("can't find mapped file for address 0x%x", addr); | |
f8b76e70 FF |
2846 | } |
2847 | } | |
2848 | return (fd); | |
2849 | } | |
2850 | ||
35f5886e | 2851 | |
3fbdd536 JG |
2852 | /* Attach to process PID, then initialize for debugging it |
2853 | and wait for the trace-trap that results from attaching. */ | |
2854 | ||
2855 | static void | |
2856 | procfs_attach (args, from_tty) | |
2857 | char *args; | |
2858 | int from_tty; | |
2859 | { | |
2860 | char *exec_file; | |
2861 | int pid; | |
2862 | ||
2863 | if (!args) | |
2864 | error_no_arg ("process-id to attach"); | |
2865 | ||
2866 | pid = atoi (args); | |
2867 | ||
2868 | if (pid == getpid()) /* Trying to masturbate? */ | |
2869 | error ("I refuse to debug myself!"); | |
2870 | ||
2871 | if (from_tty) | |
2872 | { | |
2873 | exec_file = (char *) get_exec_file (0); | |
2874 | ||
2875 | if (exec_file) | |
199b2450 | 2876 | printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, target_pid_to_str (pid)); |
3fbdd536 | 2877 | else |
199b2450 | 2878 | printf_unfiltered ("Attaching to %s\n", target_pid_to_str (pid)); |
3fbdd536 | 2879 | |
199b2450 | 2880 | gdb_flush (gdb_stdout); |
3fbdd536 JG |
2881 | } |
2882 | ||
8fc2b417 | 2883 | inferior_pid = pid = do_attach (pid); |
3fbdd536 JG |
2884 | push_target (&procfs_ops); |
2885 | } | |
2886 | ||
2887 | ||
2888 | /* Take a program previously attached to and detaches it. | |
2889 | The program resumes execution and will no longer stop | |
2890 | on signals, etc. We'd better not have left any breakpoints | |
2891 | in the program or it'll die when it hits one. For this | |
2892 | to work, it may be necessary for the process to have been | |
2893 | previously attached. It *might* work if the program was | |
2894 | started via the normal ptrace (PTRACE_TRACEME). */ | |
2895 | ||
2896 | static void | |
2897 | procfs_detach (args, from_tty) | |
2898 | char *args; | |
2899 | int from_tty; | |
2900 | { | |
2901 | int siggnal = 0; | |
2902 | ||
2903 | if (from_tty) | |
2904 | { | |
2905 | char *exec_file = get_exec_file (0); | |
2906 | if (exec_file == 0) | |
2907 | exec_file = ""; | |
199b2450 | 2908 | printf_unfiltered ("Detaching from program: %s %s\n", |
25286543 | 2909 | exec_file, target_pid_to_str (inferior_pid)); |
199b2450 | 2910 | gdb_flush (gdb_stdout); |
3fbdd536 JG |
2911 | } |
2912 | if (args) | |
2913 | siggnal = atoi (args); | |
2914 | ||
2915 | do_detach (siggnal); | |
2916 | inferior_pid = 0; | |
2917 | unpush_target (&procfs_ops); /* Pop out of handling an inferior */ | |
2918 | } | |
2919 | ||
2920 | /* Get ready to modify the registers array. On machines which store | |
2921 | individual registers, this doesn't need to do anything. On machines | |
2922 | which store all the registers in one fell swoop, this makes sure | |
2923 | that registers contains all the registers from the program being | |
2924 | debugged. */ | |
2925 | ||
2926 | static void | |
2927 | procfs_prepare_to_store () | |
2928 | { | |
2929 | #ifdef CHILD_PREPARE_TO_STORE | |
2930 | CHILD_PREPARE_TO_STORE (); | |
2931 | #endif | |
2932 | } | |
2933 | ||
2934 | /* Print status information about what we're accessing. */ | |
2935 | ||
2936 | static void | |
2937 | procfs_files_info (ignore) | |
2938 | struct target_ops *ignore; | |
2939 | { | |
199b2450 | 2940 | printf_unfiltered ("\tUsing the running image of %s %s via /proc.\n", |
25286543 | 2941 | attach_flag? "attached": "child", target_pid_to_str (inferior_pid)); |
3fbdd536 JG |
2942 | } |
2943 | ||
2944 | /* ARGSUSED */ | |
2945 | static void | |
2946 | procfs_open (arg, from_tty) | |
2947 | char *arg; | |
2948 | int from_tty; | |
2949 | { | |
2950 | error ("Use the \"run\" command to start a Unix child process."); | |
2951 | } | |
35f5886e FF |
2952 | |
2953 | /* | |
2954 | ||
3fbdd536 | 2955 | LOCAL FUNCTION |
35f5886e | 2956 | |
3fbdd536 | 2957 | do_attach -- attach to an already existing process |
35f5886e FF |
2958 | |
2959 | SYNOPSIS | |
2960 | ||
3fbdd536 | 2961 | int do_attach (int pid) |
35f5886e FF |
2962 | |
2963 | DESCRIPTION | |
2964 | ||
2965 | Attach to an already existing process with the specified process | |
2966 | id. If the process is not already stopped, query whether to | |
2967 | stop it or not. | |
2968 | ||
2969 | NOTES | |
2970 | ||
2971 | The option of stopping at attach time is specific to the /proc | |
2972 | versions of gdb. Versions using ptrace force the attachee | |
ec8ceca3 JG |
2973 | to stop. (I have changed this version to do so, too. All you |
2974 | have to do is "continue" to make it go on. -- gnu@cygnus.com) | |
35f5886e FF |
2975 | |
2976 | */ | |
2977 | ||
3fbdd536 JG |
2978 | static int |
2979 | do_attach (pid) | |
1ab3bf1b | 2980 | int pid; |
35f5886e | 2981 | { |
de43d7d0 | 2982 | struct procinfo *pi; |
234a732d GN |
2983 | struct sig_ctl sctl; |
2984 | struct flt_ctl fctl; | |
3780c337 | 2985 | int nlwp, *lwps; |
de43d7d0 | 2986 | |
3780c337 | 2987 | pi = init_procinfo (pid, 0); |
de43d7d0 | 2988 | |
3780c337 MS |
2989 | #ifdef PIOCLWPIDS |
2990 | nlwp = pi->prstatus.pr_nlwp; | |
2991 | lwps = alloca ((2 * nlwp + 2) * sizeof (id_t)); | |
de43d7d0 | 2992 | |
3780c337 | 2993 | if (ioctl (pi->ctl_fd, PIOCLWPIDS, lwps)) |
35f5886e | 2994 | { |
3780c337 MS |
2995 | print_sys_errmsg (pi -> pathname, errno); |
2996 | error ("PIOCLWPIDS failed"); | |
35f5886e | 2997 | } |
3780c337 MS |
2998 | #else /* PIOCLWPIDS */ |
2999 | nlwp = 1; | |
3000 | lwps = alloca ((2 * nlwp + 2) * sizeof *lwps); | |
3001 | lwps[0] = 0; | |
3002 | #endif | |
3003 | for (; nlwp > 0; nlwp--, lwps++) | |
3004 | { | |
3005 | /* First one has already been created above. */ | |
3006 | if ((pi = find_procinfo ((*lwps << 16) | pid, 1)) == 0) | |
3007 | pi = init_procinfo ((*lwps << 16) | pid, 0); | |
3008 | ||
234a732d | 3009 | #ifdef UNIXWARE |
3780c337 | 3010 | if (pi->prstatus.pr_lwp.pr_flags & (PR_STOPPED | PR_ISTOP)) |
234a732d | 3011 | #else |
3780c337 | 3012 | if (pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP)) |
234a732d | 3013 | #endif |
35f5886e | 3014 | { |
3780c337 MS |
3015 | pi->was_stopped = 1; |
3016 | } | |
3017 | else | |
3018 | { | |
3019 | pi->was_stopped = 0; | |
3020 | if (1 || query ("Process is currently running, stop it? ")) | |
3021 | { | |
3022 | long cmd; | |
3023 | /* Make it run again when we close it. */ | |
3024 | modify_run_on_last_close_flag (pi->ctl_fd, 1); | |
234a732d | 3025 | #ifdef PROCFS_USE_READ_WRITE |
3780c337 MS |
3026 | cmd = PCSTOP; |
3027 | if (write (pi->ctl_fd, (char *) &cmd, sizeof (long)) < 0) | |
234a732d | 3028 | #else |
3780c337 | 3029 | if (ioctl (pi->ctl_fd, PIOCSTOP, &pi->prstatus) < 0) |
234a732d | 3030 | #endif |
3780c337 MS |
3031 | { |
3032 | print_sys_errmsg (pi->pathname, errno); | |
3033 | close_proc_file (pi); | |
3034 | error ("PIOCSTOP failed"); | |
3035 | } | |
234a732d | 3036 | #ifdef UNIXWARE |
3780c337 MS |
3037 | if (!procfs_read_status (pi)) |
3038 | { | |
3039 | print_sys_errmsg (pi->pathname, errno); | |
3040 | close_proc_file (pi); | |
3041 | error ("procfs_read_status failed"); | |
3042 | } | |
234a732d | 3043 | #endif |
3780c337 MS |
3044 | pi->nopass_next_sigstop = 1; |
3045 | } | |
3046 | else | |
3047 | { | |
3048 | printf_unfiltered ("Ok, gdb will wait for %s to stop.\n", | |
3049 | target_pid_to_str (pi->pid)); | |
3050 | } | |
35f5886e | 3051 | } |
ec8ceca3 | 3052 | |
234a732d | 3053 | #ifdef PROCFS_USE_READ_WRITE |
3780c337 MS |
3054 | fctl.cmd = PCSFAULT; |
3055 | if (write (pi->ctl_fd, (char *) &fctl, sizeof (struct flt_ctl)) < 0) | |
3056 | print_sys_errmsg ("PCSFAULT failed", errno); | |
234a732d | 3057 | #else /* PROCFS_USE_READ_WRITE */ |
3780c337 MS |
3058 | if (ioctl (pi->ctl_fd, PIOCSFAULT, &pi->prrun.pr_fault)) |
3059 | { | |
3060 | print_sys_errmsg ("PIOCSFAULT failed", errno); | |
3061 | } | |
3062 | if (ioctl (pi->ctl_fd, PIOCSTRACE, &pi->prrun.pr_trace)) | |
3063 | { | |
3064 | print_sys_errmsg ("PIOCSTRACE failed", errno); | |
3065 | } | |
3066 | add_thread (pi->pid); | |
3067 | procfs_set_inferior_syscall_traps (pi); | |
35f5886e | 3068 | } |
234a732d | 3069 | #endif /* PROCFS_USE_READ_WRITE */ |
35f5886e | 3070 | attach_flag = 1; |
3780c337 | 3071 | return (pi->pid); |
35f5886e FF |
3072 | } |
3073 | ||
3074 | /* | |
3075 | ||
3fbdd536 | 3076 | LOCAL FUNCTION |
35f5886e | 3077 | |
3fbdd536 | 3078 | do_detach -- detach from an attached-to process |
35f5886e FF |
3079 | |
3080 | SYNOPSIS | |
3081 | ||
3fbdd536 | 3082 | void do_detach (int signal) |
35f5886e FF |
3083 | |
3084 | DESCRIPTION | |
3085 | ||
3086 | Detach from the current attachee. | |
3087 | ||
3088 | If signal is non-zero, the attachee is started running again and sent | |
3089 | the specified signal. | |
3090 | ||
3091 | If signal is zero and the attachee was not already stopped when we | |
3092 | attached to it, then we make it runnable again when we detach. | |
3093 | ||
3094 | Otherwise, we query whether or not to make the attachee runnable | |
3095 | again, since we may simply want to leave it in the state it was in | |
3096 | when we attached. | |
3097 | ||
3098 | We report any problems, but do not consider them errors, since we | |
3099 | MUST detach even if some things don't seem to go right. This may not | |
3100 | be the ideal situation. (FIXME). | |
3101 | */ | |
3102 | ||
3fbdd536 JG |
3103 | static void |
3104 | do_detach (signal) | |
1ab3bf1b | 3105 | int signal; |
35f5886e | 3106 | { |
de43d7d0 SG |
3107 | struct procinfo *pi; |
3108 | ||
3780c337 | 3109 | for (pi = procinfo_list; pi; pi = pi->next) |
35f5886e | 3110 | { |
3780c337 MS |
3111 | if (signal) |
3112 | { | |
3113 | set_proc_siginfo (pi, signal); | |
3114 | } | |
234a732d | 3115 | #ifdef PROCFS_USE_READ_WRITE |
3780c337 MS |
3116 | pi->saved_exitset.cmd = PCSEXIT; |
3117 | if (write (pi->ctl_fd, (char *) &pi->saved_exitset, | |
3118 | sizeof (struct sys_ctl)) < 0) | |
234a732d | 3119 | #else |
3780c337 | 3120 | if (ioctl (pi->ctl_fd, PIOCSEXIT, &pi->saved_exitset.sysset) < 0) |
234a732d | 3121 | #endif |
3780c337 MS |
3122 | { |
3123 | print_sys_errmsg (pi->pathname, errno); | |
3124 | printf_unfiltered ("PIOCSEXIT failed.\n"); | |
3125 | } | |
234a732d | 3126 | #ifdef PROCFS_USE_READ_WRITE |
3780c337 MS |
3127 | pi->saved_entryset.cmd = PCSENTRY; |
3128 | if (write (pi->ctl_fd, (char *) &pi->saved_entryset, | |
3129 | sizeof (struct sys_ctl)) < 0) | |
234a732d | 3130 | #else |
3780c337 | 3131 | if (ioctl (pi->ctl_fd, PIOCSENTRY, &pi->saved_entryset.sysset) < 0) |
234a732d | 3132 | #endif |
3780c337 MS |
3133 | { |
3134 | print_sys_errmsg (pi->pathname, errno); | |
3135 | printf_unfiltered ("PIOCSENTRY failed.\n"); | |
3136 | } | |
234a732d | 3137 | #ifdef PROCFS_USE_READ_WRITE |
3780c337 MS |
3138 | pi->saved_trace.cmd = PCSTRACE; |
3139 | if (write (pi->ctl_fd, (char *) &pi->saved_trace, | |
3140 | sizeof (struct sig_ctl)) < 0) | |
234a732d | 3141 | #else |
3780c337 | 3142 | if (ioctl (pi->ctl_fd, PIOCSTRACE, &pi->saved_trace.sigset) < 0) |
234a732d | 3143 | #endif |
3780c337 MS |
3144 | { |
3145 | print_sys_errmsg (pi->pathname, errno); | |
3146 | printf_unfiltered ("PIOCSTRACE failed.\n"); | |
3147 | } | |
234a732d | 3148 | #ifndef UNIXWARE |
3780c337 MS |
3149 | if (ioctl (pi->ctl_fd, PIOCSHOLD, &pi->saved_sighold.sigset) < 0) |
3150 | { | |
3151 | print_sys_errmsg (pi->pathname, errno); | |
3152 | printf_unfiltered ("PIOSCHOLD failed.\n"); | |
3153 | } | |
234a732d GN |
3154 | #endif |
3155 | #ifdef PROCFS_USE_READ_WRITE | |
3780c337 MS |
3156 | pi->saved_fltset.cmd = PCSFAULT; |
3157 | if (write (pi->ctl_fd, (char *) &pi->saved_fltset, | |
3158 | sizeof (struct flt_ctl)) < 0) | |
234a732d | 3159 | #else |
3780c337 | 3160 | if (ioctl (pi->ctl_fd, PIOCSFAULT, &pi->saved_fltset.fltset) < 0) |
234a732d | 3161 | #endif |
3780c337 MS |
3162 | { |
3163 | print_sys_errmsg (pi->pathname, errno); | |
3164 | printf_unfiltered ("PIOCSFAULT failed.\n"); | |
3165 | } | |
3166 | if (!procfs_read_status (pi)) | |
3167 | { | |
3168 | print_sys_errmsg (pi->pathname, errno); | |
3169 | printf_unfiltered ("procfs_read_status failed.\n"); | |
3170 | } | |
3171 | else | |
3172 | { | |
234a732d | 3173 | #ifdef UNIXWARE |
3780c337 | 3174 | if (signal || (pi->prstatus.pr_lwp.pr_flags & (PR_STOPPED | PR_ISTOP))) |
234a732d | 3175 | #else |
3780c337 | 3176 | if (signal || (pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP))) |
234a732d | 3177 | #endif |
35f5886e | 3178 | { |
3780c337 MS |
3179 | long cmd; |
3180 | struct proc_ctl pctl; | |
2592eef8 | 3181 | |
3780c337 MS |
3182 | if (signal || !pi->was_stopped || |
3183 | query ("Was stopped when attached, make it runnable again? ")) | |
3184 | { | |
3185 | /* Clear any pending signal if we want to detach without | |
3186 | a signal. */ | |
3187 | if (signal == 0) | |
3188 | set_proc_siginfo (pi, signal); | |
3189 | ||
3190 | /* Clear any fault that might have stopped it. */ | |
234a732d | 3191 | #ifdef PROCFS_USE_READ_WRITE |
3780c337 MS |
3192 | cmd = PCCFAULT; |
3193 | if (write (pi->ctl_fd, (char *) &cmd, sizeof (long)) < 0) | |
234a732d | 3194 | #else |
3780c337 | 3195 | if (ioctl (pi->ctl_fd, PIOCCFAULT, 0)) |
234a732d | 3196 | #endif |
3780c337 MS |
3197 | { |
3198 | print_sys_errmsg (pi->pathname, errno); | |
3199 | printf_unfiltered ("PIOCCFAULT failed.\n"); | |
3200 | } | |
ec8ceca3 | 3201 | |
3780c337 | 3202 | /* Make it run again when we close it. */ |
8fc2b417 | 3203 | |
3780c337 MS |
3204 | modify_run_on_last_close_flag (pi->ctl_fd, 1); |
3205 | } | |
35f5886e FF |
3206 | } |
3207 | } | |
3780c337 | 3208 | close_proc_file (pi); |
35f5886e | 3209 | } |
35f5886e FF |
3210 | attach_flag = 0; |
3211 | } | |
3212 | ||
45dc9be3 JK |
3213 | /* emulate wait() as much as possible. |
3214 | Wait for child to do something. Return pid of child, or -1 in case | |
3215 | of error; store status in *OURSTATUS. | |
3216 | ||
3217 | Not sure why we can't | |
3218 | just use wait(), but it seems to have problems when applied to a | |
3219 | process being controlled with the /proc interface. | |
3220 | ||
3221 | We have a race problem here with no obvious solution. We need to let | |
3222 | the inferior run until it stops on an event of interest, which means | |
3223 | that we need to use the PIOCWSTOP ioctl. However, we cannot use this | |
3224 | ioctl if the process is already stopped on something that is not an | |
3225 | event of interest, or the call will hang indefinitely. Thus we first | |
3226 | use PIOCSTATUS to see if the process is not stopped. If not, then we | |
3227 | use PIOCWSTOP. But during the window between the two, if the process | |
3228 | stops for any reason that is not an event of interest (such as a job | |
3229 | control signal) then gdb will hang. One possible workaround is to set | |
3230 | an alarm to wake up every minute of so and check to see if the process | |
3231 | is still running, and if so, then reissue the PIOCWSTOP. But this is | |
3232 | a real kludge, so has not been implemented. FIXME: investigate | |
3233 | alternatives. | |
3234 | ||
3235 | FIXME: Investigate why wait() seems to have problems with programs | |
3236 | being control by /proc routines. */ | |
3fbdd536 | 3237 | static int |
45dc9be3 | 3238 | procfs_wait (pid, ourstatus) |
de43d7d0 | 3239 | int pid; |
67ac9759 | 3240 | struct target_waitstatus *ourstatus; |
35f5886e FF |
3241 | { |
3242 | short what; | |
3243 | short why; | |
3244 | int statval = 0; | |
3245 | int checkerr = 0; | |
3246 | int rtnval = -1; | |
de43d7d0 | 3247 | struct procinfo *pi; |
234a732d | 3248 | struct proc_ctl pctl; |
de43d7d0 | 3249 | |
234a732d | 3250 | #ifndef UNIXWARE |
de43d7d0 SG |
3251 | if (pid != -1) /* Non-specific process? */ |
3252 | pi = NULL; | |
3253 | else | |
3254 | for (pi = procinfo_list; pi; pi = pi->next) | |
3255 | if (pi->had_event) | |
3256 | break; | |
3257 | ||
de43d7d0 | 3258 | if (!pi) |
eca4a350 SG |
3259 | { |
3260 | wait_again: | |
3261 | ||
8fc2b417 SG |
3262 | if (pi) |
3263 | pi->had_event = 0; | |
3264 | ||
eca4a350 SG |
3265 | pi = wait_fd (); |
3266 | } | |
de43d7d0 SG |
3267 | |
3268 | if (pid != -1) | |
3269 | for (pi = procinfo_list; pi; pi = pi->next) | |
3270 | if (pi->pid == pid && pi->had_event) | |
3271 | break; | |
234a732d | 3272 | #endif |
de43d7d0 SG |
3273 | |
3274 | if (!pi && !checkerr) | |
3275 | goto wait_again; | |
3276 | ||
234a732d GN |
3277 | #ifdef UNIXWARE |
3278 | if (!checkerr && !(pi->prstatus.pr_lwp.pr_flags & (PR_STOPPED | PR_ISTOP))) | |
3279 | #else | |
de43d7d0 | 3280 | if (!checkerr && !(pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP))) |
234a732d | 3281 | #endif |
de43d7d0 | 3282 | { |
234a732d | 3283 | if (!procfs_write_pcwstop (pi)) |
de43d7d0 SG |
3284 | { |
3285 | checkerr++; | |
3286 | } | |
3780c337 | 3287 | } |
35f5886e FF |
3288 | if (checkerr) |
3289 | { | |
3290 | if (errno == ENOENT) | |
3291 | { | |
3780c337 | 3292 | /* XXX Fixme -- what to do if attached? Can't call wait... */ |
35f5886e | 3293 | rtnval = wait (&statval); |
3780c337 | 3294 | if ((rtnval) != (inferior_pid)) |
35f5886e | 3295 | { |
de43d7d0 | 3296 | print_sys_errmsg (pi->pathname, errno); |
3780c337 | 3297 | error ("procfs_wait: wait failed, returned %d", rtnval); |
35f5886e FF |
3298 | /* NOTREACHED */ |
3299 | } | |
3300 | } | |
3301 | else | |
3302 | { | |
de43d7d0 | 3303 | print_sys_errmsg (pi->pathname, errno); |
35f5886e FF |
3304 | error ("PIOCSTATUS or PIOCWSTOP failed."); |
3305 | /* NOTREACHED */ | |
3306 | } | |
3307 | } | |
de43d7d0 | 3308 | else if (pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP)) |
35f5886e | 3309 | { |
234a732d GN |
3310 | #ifdef UNIXWARE |
3311 | rtnval = pi->prstatus.pr_pid; | |
3312 | why = pi->prstatus.pr_lwp.pr_why; | |
3313 | what = pi->prstatus.pr_lwp.pr_what; | |
3314 | #else | |
8fc2b417 | 3315 | rtnval = pi->pid; |
de43d7d0 SG |
3316 | why = pi->prstatus.pr_why; |
3317 | what = pi->prstatus.pr_what; | |
234a732d | 3318 | #endif |
de43d7d0 SG |
3319 | |
3320 | switch (why) | |
35f5886e | 3321 | { |
de43d7d0 | 3322 | case PR_SIGNALLED: |
35f5886e | 3323 | statval = (what << 8) | 0177; |
fb63d460 SG |
3324 | break; |
3325 | case PR_SYSENTRY: | |
de43d7d0 | 3326 | case PR_SYSEXIT: |
8fc2b417 SG |
3327 | { |
3328 | int i; | |
3329 | int found_handler = 0; | |
de43d7d0 | 3330 | |
8fc2b417 SG |
3331 | for (i = 0; i < pi->num_syscall_handlers; i++) |
3332 | if (pi->syscall_handlers[i].syscall_num == what) | |
de43d7d0 | 3333 | { |
8fc2b417 SG |
3334 | found_handler = 1; |
3335 | if (!pi->syscall_handlers[i].func (pi, what, why, | |
3336 | &rtnval, &statval)) | |
3337 | goto wait_again; | |
de43d7d0 | 3338 | |
8fc2b417 | 3339 | break; |
de43d7d0 SG |
3340 | } |
3341 | ||
8fc2b417 SG |
3342 | if (!found_handler) |
3343 | if (why == PR_SYSENTRY) | |
3344 | error ("PR_SYSENTRY, unhandled system call %d", what); | |
3345 | else | |
3346 | error ("PR_SYSEXIT, unhandled system call %d", what); | |
3347 | } | |
de43d7d0 SG |
3348 | break; |
3349 | case PR_REQUESTED: | |
35f5886e | 3350 | statval = (SIGSTOP << 8) | 0177; |
de43d7d0 SG |
3351 | break; |
3352 | case PR_JOBCONTROL: | |
35f5886e | 3353 | statval = (what << 8) | 0177; |
de43d7d0 SG |
3354 | break; |
3355 | case PR_FAULTED: | |
35f5886e FF |
3356 | switch (what) |
3357 | { | |
e6b8a171 | 3358 | #ifdef FLTWATCH |
999dd04b | 3359 | case FLTWATCH: |
e6b8a171 JL |
3360 | statval = (SIGTRAP << 8) | 0177; |
3361 | break; | |
3362 | #endif | |
3363 | #ifdef FLTKWATCH | |
999dd04b | 3364 | case FLTKWATCH: |
35f5886e FF |
3365 | statval = (SIGTRAP << 8) | 0177; |
3366 | break; | |
e6b8a171 | 3367 | #endif |
3f5e2fb5 JK |
3368 | #ifndef FAULTED_USE_SIGINFO |
3369 | /* Irix, contrary to the documentation, fills in 0 for si_signo. | |
3370 | Solaris fills in si_signo. I'm not sure about others. */ | |
3371 | case FLTPRIV: | |
3372 | case FLTILL: | |
3373 | statval = (SIGILL << 8) | 0177; | |
3374 | break; | |
3375 | case FLTBPT: | |
3376 | case FLTTRACE: | |
3377 | statval = (SIGTRAP << 8) | 0177; | |
3780c337 | 3378 | break; |
3f5e2fb5 JK |
3379 | case FLTSTACK: |
3380 | case FLTACCESS: | |
3381 | case FLTBOUNDS: | |
3382 | statval = (SIGSEGV << 8) | 0177; | |
3383 | break; | |
3384 | case FLTIOVF: | |
3385 | case FLTIZDIV: | |
3386 | case FLTFPE: | |
3387 | statval = (SIGFPE << 8) | 0177; | |
3388 | break; | |
3389 | case FLTPAGE: /* Recoverable page fault */ | |
3390 | #endif /* not FAULTED_USE_SIGINFO */ | |
35f5886e | 3391 | default: |
890634ed JK |
3392 | /* Use the signal which the kernel assigns. This is better than |
3393 | trying to second-guess it from the fault. In fact, I suspect | |
3394 | that FLTACCESS can be either SIGSEGV or SIGBUS. */ | |
234a732d GN |
3395 | #ifdef UNIXWARE |
3396 | statval = ((pi->prstatus.pr_lwp.pr_info.si_signo) << 8) | 0177; | |
3397 | #else | |
890634ed | 3398 | statval = ((pi->prstatus.pr_info.si_signo) << 8) | 0177; |
234a732d | 3399 | #endif |
890634ed | 3400 | break; |
35f5886e | 3401 | } |
de43d7d0 SG |
3402 | break; |
3403 | default: | |
35f5886e | 3404 | error ("PIOCWSTOP, unknown why %d, what %d", why, what); |
35f5886e | 3405 | } |
f14465c3 | 3406 | /* Stop all the other threads when any of them stops. */ |
de43d7d0 SG |
3407 | |
3408 | { | |
3780c337 | 3409 | struct procinfo *procinfo, *next_pi; |
de43d7d0 | 3410 | |
3780c337 | 3411 | for (procinfo = procinfo_list; procinfo; procinfo = next_pi) |
de43d7d0 | 3412 | { |
3780c337 | 3413 | next_pi = procinfo->next; |
de43d7d0 | 3414 | if (!procinfo->had_event) |
8fc2b417 | 3415 | { |
234a732d GN |
3416 | #ifdef PROCFS_USE_READ_WRITE |
3417 | cmd = PCSTOP; | |
3418 | if (write (pi->ctl_fd, (char *) &cmd, sizeof (long)) < 0) | |
3419 | { | |
3420 | print_sys_errmsg (procinfo->pathname, errno); | |
3421 | error ("PCSTOP failed"); | |
3422 | } | |
3423 | #else | |
8fc2b417 SG |
3424 | /* A bug in Solaris (2.5) causes us to hang when trying to |
3425 | stop a stopped process. So, we have to check first in | |
3426 | order to avoid the hang. */ | |
234a732d | 3427 | if (!procfs_read_status (procinfo)) |
8fc2b417 | 3428 | { |
3780c337 MS |
3429 | /* The LWP has apparently terminated. */ |
3430 | if (info_verbose) | |
3431 | printf_filtered ("LWP %d doesn't respond.\n", | |
3432 | (procinfo->pid >> 16) & 0xffff); | |
3433 | close_proc_file (procinfo); | |
3434 | continue; | |
8fc2b417 | 3435 | } |
234a732d | 3436 | |
8fc2b417 | 3437 | if (!(procinfo->prstatus.pr_flags & PR_STOPPED)) |
3780c337 MS |
3438 | if (ioctl (procinfo->ctl_fd, PIOCSTOP, &procinfo->prstatus) |
3439 | < 0) | |
8fc2b417 SG |
3440 | { |
3441 | print_sys_errmsg (procinfo->pathname, errno); | |
3780c337 | 3442 | warning ("PIOCSTOP failed"); |
8fc2b417 | 3443 | } |
234a732d | 3444 | #endif |
8fc2b417 | 3445 | } |
de43d7d0 SG |
3446 | } |
3447 | } | |
35f5886e FF |
3448 | } |
3449 | else | |
3450 | { | |
3451 | error ("PIOCWSTOP, stopped for unknown/unhandled reason, flags %#x", | |
de43d7d0 | 3452 | pi->prstatus.pr_flags); |
35f5886e | 3453 | } |
3fbdd536 | 3454 | |
67ac9759 | 3455 | store_waitstatus (ourstatus, statval); |
3fbdd536 JG |
3456 | |
3457 | if (rtnval == -1) /* No more children to wait for */ | |
3458 | { | |
3780c337 | 3459 | warning ("Child process unexpectedly missing"); |
67ac9759 JK |
3460 | /* Claim it exited with unknown signal. */ |
3461 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
3462 | ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN; | |
3fbdd536 JG |
3463 | return rtnval; |
3464 | } | |
3465 | ||
de43d7d0 | 3466 | pi->had_event = 0; /* Indicate that we've seen this one */ |
35f5886e FF |
3467 | return (rtnval); |
3468 | } | |
3469 | ||
3470 | /* | |
3471 | ||
6b801388 FF |
3472 | LOCAL FUNCTION |
3473 | ||
3474 | set_proc_siginfo - set a process's current signal info | |
3475 | ||
3476 | SYNOPSIS | |
3477 | ||
3478 | void set_proc_siginfo (struct procinfo *pip, int signo); | |
3479 | ||
3480 | DESCRIPTION | |
3481 | ||
3482 | Given a pointer to a process info struct in PIP and a signal number | |
3483 | in SIGNO, set the process's current signal and its associated signal | |
3484 | information. The signal will be delivered to the process immediately | |
3485 | after execution is resumed, even if it is being held. In addition, | |
3486 | this particular delivery will not cause another PR_SIGNALLED stop | |
3487 | even if the signal is being traced. | |
3488 | ||
3489 | If we are not delivering the same signal that the prstatus siginfo | |
3490 | struct contains information about, then synthesize a siginfo struct | |
3491 | to match the signal we are doing to deliver, make it of the type | |
3492 | "generated by a user process", and send this synthesized copy. When | |
3493 | used to set the inferior's signal state, this will be required if we | |
3494 | are not currently stopped because of a traced signal, or if we decide | |
3495 | to continue with a different signal. | |
3496 | ||
3497 | Note that when continuing the inferior from a stop due to receipt | |
3498 | of a traced signal, we either have set PRCSIG to clear the existing | |
3499 | signal, or we have to call this function to do a PIOCSSIG with either | |
3500 | the existing siginfo struct from pr_info, or one we have synthesized | |
3501 | appropriately for the signal we want to deliver. Otherwise if the | |
3502 | signal is still being traced, the inferior will immediately stop | |
3503 | again. | |
3504 | ||
3505 | See siginfo(5) for more details. | |
3506 | */ | |
3507 | ||
3508 | static void | |
3509 | set_proc_siginfo (pip, signo) | |
cc221e76 FF |
3510 | struct procinfo *pip; |
3511 | int signo; | |
6b801388 FF |
3512 | { |
3513 | struct siginfo newsiginfo; | |
3514 | struct siginfo *sip; | |
234a732d | 3515 | struct sigi_ctl sictl; |
6b801388 | 3516 | |
2592eef8 PS |
3517 | #ifdef PROCFS_DONT_PIOCSSIG_CURSIG |
3518 | /* With Alpha OSF/1 procfs, the kernel gets really confused if it | |
a1a0d974 | 3519 | receives a PIOCSSIG with a signal identical to the current signal, |
2592eef8 | 3520 | it messes up the current signal. Work around the kernel bug. */ |
234a732d GN |
3521 | #ifdef UNIXWARE |
3522 | if (signo == pip -> prstatus.pr_lwp.pr_cursig) | |
3523 | #else | |
2592eef8 | 3524 | if (signo == pip -> prstatus.pr_cursig) |
234a732d | 3525 | #endif |
2592eef8 PS |
3526 | return; |
3527 | #endif | |
3528 | ||
234a732d GN |
3529 | #ifdef UNIXWARE |
3530 | if (signo == pip->prstatus.pr_lwp.pr_info.si_signo) | |
3531 | { | |
3532 | memcpy ((char *) &sictl.siginfo, (char *) &pip->prstatus.pr_lwp.pr_info, | |
3533 | sizeof (siginfo_t)); | |
3534 | } | |
3535 | #else | |
de43d7d0 | 3536 | if (signo == pip -> prstatus.pr_info.si_signo) |
6b801388 | 3537 | { |
de43d7d0 SG |
3538 | sip = &pip -> prstatus.pr_info; |
3539 | } | |
234a732d | 3540 | #endif |
de43d7d0 SG |
3541 | else |
3542 | { | |
234a732d GN |
3543 | #ifdef UNIXWARE |
3544 | siginfo_t *sip = &sictl.siginfo; | |
3545 | memset ((char *) sip, 0, sizeof (siginfo_t)); | |
3546 | #else | |
de43d7d0 SG |
3547 | memset ((char *) &newsiginfo, 0, sizeof (newsiginfo)); |
3548 | sip = &newsiginfo; | |
234a732d | 3549 | #endif |
de43d7d0 SG |
3550 | sip -> si_signo = signo; |
3551 | sip -> si_code = 0; | |
3552 | sip -> si_errno = 0; | |
3553 | sip -> si_pid = getpid (); | |
3554 | sip -> si_uid = getuid (); | |
3555 | } | |
234a732d GN |
3556 | #ifdef PROCFS_USE_READ_WRITE |
3557 | sictl.cmd = PCSSIG; | |
3558 | if (write (pip->ctl_fd, (char *) &sictl, sizeof (struct sigi_ctl)) < 0) | |
3559 | #else | |
3560 | if (ioctl (pip->ctl_fd, PIOCSSIG, sip) < 0) | |
3561 | #endif | |
de43d7d0 SG |
3562 | { |
3563 | print_sys_errmsg (pip -> pathname, errno); | |
3564 | warning ("PIOCSSIG failed"); | |
6b801388 FF |
3565 | } |
3566 | } | |
3567 | ||
25286543 | 3568 | /* Resume execution of process PID. If STEP is nozero, then |
59ba57da JK |
3569 | just single step it. If SIGNAL is nonzero, restart it with that |
3570 | signal activated. */ | |
35f5886e | 3571 | |
3fbdd536 | 3572 | static void |
25286543 SG |
3573 | procfs_resume (pid, step, signo) |
3574 | int pid; | |
1ab3bf1b | 3575 | int step; |
67ac9759 | 3576 | enum target_signal signo; |
35f5886e | 3577 | { |
59ba57da | 3578 | int signal_to_pass; |
3780c337 | 3579 | struct procinfo *pi, *procinfo, *next_pi; |
234a732d | 3580 | struct proc_ctl pctl; |
de43d7d0 SG |
3581 | |
3582 | pi = find_procinfo (pid == -1 ? inferior_pid : pid, 0); | |
59ba57da | 3583 | |
35f5886e | 3584 | errno = 0; |
234a732d GN |
3585 | #ifdef UNIXWARE |
3586 | pctl.cmd = PCRUN; | |
3587 | pctl.data = PRCFAULT; | |
3588 | #else | |
de43d7d0 | 3589 | pi->prrun.pr_flags = PRSTRACE | PRSFAULT | PRCFAULT; |
234a732d | 3590 | #endif |
99fd9e3e | 3591 | |
59ba57da JK |
3592 | #if 0 |
3593 | /* It should not be necessary. If the user explicitly changes the value, | |
3594 | value_assign calls write_register_bytes, which writes it. */ | |
3595 | /* It may not be absolutely necessary to specify the PC value for | |
3596 | restarting, but to be safe we use the value that gdb considers | |
3597 | to be current. One case where this might be necessary is if the | |
3598 | user explicitly changes the PC value that gdb considers to be | |
3599 | current. FIXME: Investigate if this is necessary or not. */ | |
3600 | ||
c3192172 | 3601 | #ifdef PRSVADDR_BROKEN |
99fd9e3e SG |
3602 | /* Can't do this under Solaris running on a Sparc, as there seems to be no |
3603 | place to put nPC. In fact, if you use this, nPC seems to be set to some | |
3604 | random garbage. We have to rely on the fact that PC and nPC have been | |
3605 | written previously via PIOCSREG during a register flush. */ | |
3606 | ||
de43d7d0 SG |
3607 | pi->prrun.pr_vaddr = (caddr_t) *(int *) ®isters[REGISTER_BYTE (PC_REGNUM)]; |
3608 | pi->prrun.pr_flags != PRSVADDR; | |
99fd9e3e | 3609 | #endif |
59ba57da JK |
3610 | #endif |
3611 | ||
67ac9759 | 3612 | if (signo == TARGET_SIGNAL_STOP && pi->nopass_next_sigstop) |
59ba57da JK |
3613 | /* When attaching to a child process, if we forced it to stop with |
3614 | a PIOCSTOP, then we will have set the nopass_next_sigstop flag. | |
3615 | Upon resuming the first time after such a stop, we explicitly | |
3616 | inhibit sending it another SIGSTOP, which would be the normal | |
3617 | result of default signal handling. One potential drawback to | |
3618 | this is that we will also ignore any attempt to by the user | |
3619 | to explicitly continue after the attach with a SIGSTOP. Ultimately | |
3620 | this problem should be dealt with by making the routines that | |
3621 | deal with the inferior a little smarter, and possibly even allow | |
3622 | an inferior to continue running at the same time as gdb. (FIXME?) */ | |
3623 | signal_to_pass = 0; | |
67ac9759 | 3624 | else if (signo == TARGET_SIGNAL_TSTP |
234a732d GN |
3625 | #ifdef UNIXWARE |
3626 | && pi->prstatus.pr_lwp.pr_cursig == SIGTSTP | |
3780c337 | 3627 | && pi->prstatus.pr_lwp.pr_action.sa_handler == SIG_DFL |
234a732d | 3628 | #else |
de43d7d0 | 3629 | && pi->prstatus.pr_cursig == SIGTSTP |
3780c337 | 3630 | && pi->prstatus.pr_action.sa_handler == SIG_DFL |
234a732d | 3631 | #endif |
3780c337 | 3632 | ) |
59ba57da JK |
3633 | |
3634 | /* We are about to pass the inferior a SIGTSTP whose action is | |
3635 | SIG_DFL. The SIG_DFL action for a SIGTSTP is to stop | |
3636 | (notifying the parent via wait()), and then keep going from the | |
3637 | same place when the parent is ready for you to keep going. So | |
3638 | under the debugger, it should do nothing (as if the program had | |
3639 | been stopped and then later resumed. Under ptrace, this | |
3640 | happens for us, but under /proc, the system obligingly stops | |
3641 | the process, and wait_for_inferior would have no way of | |
3642 | distinguishing that type of stop (which indicates that we | |
3643 | should just start it again), with a stop due to the pr_trace | |
3644 | field of the prrun_t struct. | |
3645 | ||
3646 | Note that if the SIGTSTP is being caught, we *do* need to pass it, | |
3647 | because the handler needs to get executed. */ | |
3648 | signal_to_pass = 0; | |
3649 | else | |
67ac9759 | 3650 | signal_to_pass = target_signal_to_host (signo); |
99fd9e3e | 3651 | |
59ba57da | 3652 | if (signal_to_pass) |
35f5886e | 3653 | { |
de43d7d0 | 3654 | set_proc_siginfo (pi, signal_to_pass); |
35f5886e FF |
3655 | } |
3656 | else | |
3657 | { | |
234a732d GN |
3658 | #ifdef UNIXWARE |
3659 | pctl.data |= PRCSIG; | |
3660 | #else | |
de43d7d0 | 3661 | pi->prrun.pr_flags |= PRCSIG; |
234a732d | 3662 | #endif |
35f5886e | 3663 | } |
de43d7d0 | 3664 | pi->nopass_next_sigstop = 0; |
35f5886e FF |
3665 | if (step) |
3666 | { | |
234a732d GN |
3667 | #ifdef UNIXWARE |
3668 | pctl.data |= PRSTEP; | |
3669 | #else | |
de43d7d0 | 3670 | pi->prrun.pr_flags |= PRSTEP; |
234a732d | 3671 | #endif |
35f5886e | 3672 | } |
3780c337 | 3673 | pi->had_event = 0; |
8fc2b417 SG |
3674 | /* Don't try to start a process unless it's stopped on an |
3675 | `event of interest'. Doing so will cause errors. */ | |
3676 | ||
3780c337 MS |
3677 | if (!procfs_read_status (pi)) |
3678 | { | |
3679 | /* The LWP has apparently terminated. */ | |
3680 | if (info_verbose) | |
3681 | printf_filtered ("LWP %d doesn't respond.\n", | |
3682 | (pi->pid >> 16) & 0xffff); | |
3683 | close_proc_file (pi); | |
3684 | } | |
3685 | else | |
3686 | { | |
234a732d | 3687 | #ifdef PROCFS_USE_READ_WRITE |
3780c337 | 3688 | if (write (pi->ctl_fd, (char *) &pctl, sizeof (struct proc_ctl)) < 0) |
234a732d | 3689 | #else |
3780c337 MS |
3690 | if ((pi->prstatus.pr_flags & PR_ISTOP) |
3691 | && ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0) | |
234a732d | 3692 | #endif |
3780c337 MS |
3693 | { |
3694 | /* The LWP has apparently terminated. */ | |
3695 | if (info_verbose) | |
3696 | printf_filtered ("LWP %d doesn't respond.\n", | |
3697 | (pi->pid >> 16) & 0xffff); | |
3698 | close_proc_file (pi); | |
3699 | } | |
35f5886e | 3700 | } |
de43d7d0 | 3701 | |
3780c337 MS |
3702 | /* Continue all the other threads that haven't had an event of interest. |
3703 | Also continue them if they have NOPASS_NEXT_SIGSTOP set; this is only | |
3704 | set by do_attach, and means this is the first resume after an attach. | |
3705 | All threads were CSTOP'd by do_attach, and should be resumed now. */ | |
de43d7d0 SG |
3706 | |
3707 | if (pid == -1) | |
3780c337 | 3708 | for (procinfo = procinfo_list; procinfo; procinfo = next_pi) |
de43d7d0 | 3709 | { |
3780c337 MS |
3710 | next_pi = procinfo->next; |
3711 | if (pi != procinfo) | |
3712 | if (!procinfo->had_event || | |
3713 | (procinfo->nopass_next_sigstop && signo == TARGET_SIGNAL_STOP)) | |
3714 | { | |
3715 | procinfo->had_event = procinfo->nopass_next_sigstop = 0; | |
234a732d | 3716 | #ifdef PROCFS_USE_READ_WRITE |
3780c337 MS |
3717 | pctl.data = PRCFAULT | PRCSIG; |
3718 | if (write (procinfo->ctl_fd, (char *) &pctl, | |
3719 | sizeof (struct proc_ctl)) < 0) | |
3720 | { | |
3721 | if (!procfs_read_status (procinfo)) | |
3722 | fprintf_unfiltered(gdb_stderr, | |
3723 | "procfs_read_status failed, errno=%d\n", | |
3724 | errno); | |
3725 | print_sys_errmsg (procinfo->pathname, errno); | |
3726 | error ("PCRUN failed"); | |
3727 | } | |
3728 | procfs_read_status (procinfo); | |
234a732d | 3729 | #else |
3780c337 MS |
3730 | procinfo->prrun.pr_flags &= PRSTEP; |
3731 | procinfo->prrun.pr_flags |= PRCFAULT | PRCSIG; | |
3732 | if (!procfs_read_status (procinfo)) | |
3733 | { | |
3734 | /* The LWP has apparently terminated. */ | |
3735 | if (info_verbose) | |
3736 | printf_filtered ("LWP %d doesn't respond.\n", | |
3737 | (procinfo->pid >> 16) & 0xffff); | |
3738 | close_proc_file (procinfo); | |
3739 | continue; | |
3740 | } | |
8fc2b417 | 3741 | |
3780c337 MS |
3742 | /* Don't try to start a process unless it's stopped on an |
3743 | `event of interest'. Doing so will cause errors. */ | |
8fc2b417 | 3744 | |
3780c337 MS |
3745 | if ((procinfo->prstatus.pr_flags & PR_ISTOP) |
3746 | && ioctl (procinfo->ctl_fd, PIOCRUN, &procinfo->prrun) < 0) | |
3747 | { | |
3748 | if (!procfs_read_status (procinfo)) | |
3749 | fprintf_unfiltered(gdb_stderr, | |
3750 | "procfs_read_status failed, errno=%d\n", | |
3751 | errno); | |
3752 | print_sys_errmsg (procinfo->pathname, errno); | |
3753 | warning ("PIOCRUN failed"); | |
3754 | } | |
3755 | } | |
3756 | procfs_read_status (procinfo); | |
234a732d | 3757 | #endif |
de43d7d0 | 3758 | } |
35f5886e FF |
3759 | } |
3760 | ||
3761 | /* | |
3762 | ||
3fbdd536 | 3763 | LOCAL FUNCTION |
35f5886e | 3764 | |
3fbdd536 | 3765 | procfs_fetch_registers -- fetch current registers from inferior |
35f5886e FF |
3766 | |
3767 | SYNOPSIS | |
3768 | ||
3fbdd536 | 3769 | void procfs_fetch_registers (int regno) |
35f5886e FF |
3770 | |
3771 | DESCRIPTION | |
3772 | ||
3773 | Read the current values of the inferior's registers, both the | |
3774 | general register set and floating point registers (if supported) | |
3775 | and update gdb's idea of their current values. | |
3776 | ||
3777 | */ | |
3778 | ||
3fbdd536 JG |
3779 | static void |
3780 | procfs_fetch_registers (regno) | |
1ab3bf1b | 3781 | int regno; |
35f5886e | 3782 | { |
de43d7d0 SG |
3783 | struct procinfo *pi; |
3784 | ||
3785 | pi = current_procinfo; | |
3786 | ||
234a732d GN |
3787 | #ifdef UNIXWARE |
3788 | if (procfs_read_status (pi)) | |
3789 | { | |
3790 | supply_gregset (&pi->prstatus.pr_lwp.pr_context.uc_mcontext.gregs); | |
3791 | #if defined (FP0_REGNUM) | |
3792 | supply_fpregset (&pi->prstatus.pr_lwp.pr_context.uc_mcontext.fpregs); | |
3793 | #endif | |
3794 | } | |
3795 | #else /* UNIXWARE */ | |
3796 | if (ioctl (pi->ctl_fd, PIOCGREG, &pi->gregset.gregset) != -1) | |
35f5886e | 3797 | { |
234a732d | 3798 | supply_gregset (&pi->gregset.gregset); |
35f5886e FF |
3799 | } |
3800 | #if defined (FP0_REGNUM) | |
234a732d | 3801 | if (ioctl (pi->ctl_fd, PIOCGFPREG, &pi->fpregset.fpregset) != -1) |
35f5886e | 3802 | { |
234a732d | 3803 | supply_fpregset (&pi->fpregset.fpregset); |
35f5886e FF |
3804 | } |
3805 | #endif | |
234a732d | 3806 | #endif /* UNIXWARE */ |
35f5886e FF |
3807 | } |
3808 | ||
fb182850 FF |
3809 | /* |
3810 | ||
35f5886e FF |
3811 | LOCAL FUNCTION |
3812 | ||
3780c337 | 3813 | proc_init_failed - called when /proc access initialization fails |
de43d7d0 | 3814 | fails |
35f5886e FF |
3815 | |
3816 | SYNOPSIS | |
3817 | ||
3780c337 MS |
3818 | static void proc_init_failed (struct procinfo *pi, |
3819 | char *why, int kill_p) | |
35f5886e FF |
3820 | |
3821 | DESCRIPTION | |
3822 | ||
3823 | This function is called whenever initialization of access to a /proc | |
3824 | entry fails. It prints a suitable error message, does some cleanup, | |
3825 | and then invokes the standard error processing routine which dumps | |
3780c337 | 3826 | us back into the command loop. If KILL_P is true, sends SIGKILL. |
35f5886e FF |
3827 | */ |
3828 | ||
3829 | static void | |
3780c337 | 3830 | proc_init_failed (pi, why, kill_p) |
de43d7d0 | 3831 | struct procinfo *pi; |
1ab3bf1b | 3832 | char *why; |
3780c337 | 3833 | int kill_p; |
35f5886e | 3834 | { |
de43d7d0 | 3835 | print_sys_errmsg (pi->pathname, errno); |
3780c337 MS |
3836 | if (kill_p) |
3837 | kill (pi->pid, SIGKILL); | |
de43d7d0 | 3838 | close_proc_file (pi); |
35f5886e FF |
3839 | error (why); |
3840 | /* NOTREACHED */ | |
3841 | } | |
3842 | ||
3843 | /* | |
3844 | ||
3845 | LOCAL FUNCTION | |
3846 | ||
3847 | close_proc_file - close any currently open /proc entry | |
3848 | ||
3849 | SYNOPSIS | |
3850 | ||
a39ad5ce | 3851 | static void close_proc_file (struct procinfo *pip) |
35f5886e FF |
3852 | |
3853 | DESCRIPTION | |
3854 | ||
3855 | Close any currently open /proc entry and mark the process information | |
3856 | entry as invalid. In order to ensure that we don't try to reuse any | |
3857 | stale information, the pid, fd, and pathnames are explicitly | |
3858 | invalidated, which may be overkill. | |
3859 | ||
3860 | */ | |
3861 | ||
3862 | static void | |
1ab3bf1b JG |
3863 | close_proc_file (pip) |
3864 | struct procinfo *pip; | |
35f5886e | 3865 | { |
de43d7d0 SG |
3866 | struct procinfo *procinfo; |
3867 | ||
3780c337 | 3868 | delete_thread (pip->pid); /* remove thread from GDB's thread list */ |
de43d7d0 SG |
3869 | remove_fd (pip); /* Remove fd from poll/select list */ |
3870 | ||
234a732d GN |
3871 | close (pip->ctl_fd); |
3872 | #ifdef HAVE_MULTIPLE_PROC_FDS | |
3873 | close (pip->as_fd); | |
3874 | close (pip->status_fd); | |
3875 | close (pip->map_fd); | |
3876 | #endif | |
de43d7d0 SG |
3877 | |
3878 | free (pip -> pathname); | |
3879 | ||
3880 | /* Unlink pip from the procinfo chain. Note pip might not be on the list. */ | |
3881 | ||
3882 | if (procinfo_list == pip) | |
3883 | procinfo_list = pip->next; | |
3884 | else | |
234a732d GN |
3885 | { |
3886 | for (procinfo = procinfo_list; procinfo; procinfo = procinfo->next) | |
3887 | { | |
3888 | if (procinfo->next == pip) | |
3889 | { | |
3890 | procinfo->next = pip->next; | |
3891 | break; | |
3892 | } | |
3893 | } | |
3894 | free (pip); | |
3895 | } | |
35f5886e FF |
3896 | } |
3897 | ||
3898 | /* | |
3899 | ||
3900 | LOCAL FUNCTION | |
3901 | ||
3902 | open_proc_file - open a /proc entry for a given process id | |
3903 | ||
3904 | SYNOPSIS | |
3905 | ||
ec8ceca3 | 3906 | static int open_proc_file (int pid, struct procinfo *pip, int mode) |
35f5886e FF |
3907 | |
3908 | DESCRIPTION | |
3909 | ||
ec8ceca3 JG |
3910 | Given a process id and a mode, close the existing open /proc |
3911 | entry (if any) and open one for the new process id, in the | |
3912 | specified mode. Once it is open, then mark the local process | |
3913 | information structure as valid, which guarantees that the pid, | |
3914 | fd, and pathname fields match an open /proc entry. Returns | |
3915 | zero if the open fails, nonzero otherwise. | |
35f5886e FF |
3916 | |
3917 | Note that the pathname is left intact, even when the open fails, | |
3918 | so that callers can use it to construct meaningful error messages | |
3919 | rather than just "file open failed". | |
8fc2b417 SG |
3920 | |
3921 | Note that for Solaris, the process-id also includes an LWP-id, so we | |
3922 | actually attempt to open that. If we are handed a pid with a 0 LWP-id, | |
3923 | then we will ask the kernel what it is and add it to the pid. Hence, | |
3924 | the pid can be changed by us. | |
35f5886e FF |
3925 | */ |
3926 | ||
3927 | static int | |
234a732d | 3928 | open_proc_file (pid, pip, mode, control) |
1ab3bf1b JG |
3929 | int pid; |
3930 | struct procinfo *pip; | |
ec8ceca3 | 3931 | int mode; |
234a732d | 3932 | int control; |
35f5886e | 3933 | { |
8fc2b417 SG |
3934 | int tmp, tmpfd; |
3935 | ||
de43d7d0 SG |
3936 | pip -> next = NULL; |
3937 | pip -> had_event = 0; | |
234a732d | 3938 | pip -> pathname = xmalloc (MAX_PROC_NAME_SIZE); |
de43d7d0 SG |
3939 | pip -> pid = pid; |
3940 | ||
8fc2b417 SG |
3941 | #ifndef PIOCOPENLWP |
3942 | tmp = pid; | |
3943 | #else | |
3944 | tmp = pid & 0xffff; | |
3945 | #endif | |
3946 | ||
234a732d GN |
3947 | #ifdef HAVE_MULTIPLE_PROC_FDS |
3948 | sprintf (pip->pathname, STATUS_PROC_NAME_FMT, tmp); | |
3949 | if ((pip->status_fd = open (pip->pathname, O_RDONLY)) < 0) | |
3950 | { | |
3951 | return 0; | |
3952 | } | |
3953 | ||
3954 | sprintf (pip->pathname, AS_PROC_NAME_FMT, tmp); | |
3955 | if ((pip->as_fd = open (pip->pathname, O_RDWR)) < 0) | |
3956 | { | |
3957 | close (pip->status_fd); | |
3958 | return 0; | |
3959 | } | |
3960 | ||
3961 | sprintf (pip->pathname, MAP_PROC_NAME_FMT, tmp); | |
3962 | if ((pip->map_fd = open (pip->pathname, O_RDONLY)) < 0) | |
3963 | { | |
3964 | close (pip->status_fd); | |
3965 | close (pip->as_fd); | |
3966 | return 0; | |
3967 | } | |
3968 | ||
3969 | sprintf (pip->pathname, MAP_PROC_NAME_FMT, tmp); | |
3970 | if ((pip->map_fd = open (pip->pathname, O_RDONLY)) < 0) | |
3971 | { | |
3972 | close (pip->status_fd); | |
3973 | close (pip->as_fd); | |
3974 | return 0; | |
3975 | } | |
3976 | ||
3977 | if (control) | |
3978 | { | |
3979 | sprintf (pip->pathname, CTL_PROC_NAME_FMT, tmp); | |
3980 | if ((pip->ctl_fd = open (pip->pathname, O_WRONLY)) < 0) | |
3981 | { | |
3982 | close (pip->status_fd); | |
3983 | close (pip->as_fd); | |
3984 | close (pip->map_fd); | |
3985 | return 0; | |
3780c337 | 3986 | } |
234a732d GN |
3987 | } |
3988 | ||
3989 | #else /* HAVE_MULTIPLE_PROC_FDS */ | |
3990 | sprintf (pip -> pathname, CTL_PROC_NAME_FMT, tmp); | |
3991 | ||
8fc2b417 | 3992 | if ((tmpfd = open (pip -> pathname, mode)) < 0) |
de43d7d0 SG |
3993 | return 0; |
3994 | ||
8fc2b417 | 3995 | #ifndef PIOCOPENLWP |
234a732d GN |
3996 | pip -> ctl_fd = tmpfd; |
3997 | pip -> as_fd = tmpfd; | |
3998 | pip -> map_fd = tmpfd; | |
3999 | pip -> status_fd = tmpfd; | |
8fc2b417 SG |
4000 | #else |
4001 | tmp = (pid >> 16) & 0xffff; /* Extract thread id */ | |
4002 | ||
4003 | if (tmp == 0) | |
4004 | { /* Don't know thread id yet */ | |
4005 | if (ioctl (tmpfd, PIOCSTATUS, &pip -> prstatus) < 0) | |
4006 | { | |
4007 | print_sys_errmsg (pip -> pathname, errno); | |
4008 | close (tmpfd); | |
4009 | error ("open_proc_file: PIOCSTATUS failed"); | |
4010 | } | |
4011 | ||
4012 | tmp = pip -> prstatus.pr_who; /* Get thread id from prstatus_t */ | |
4013 | pip -> pid = (tmp << 16) | pid; /* Update pip */ | |
4014 | } | |
4015 | ||
234a732d | 4016 | if ((pip -> ctl_fd = ioctl (tmpfd, PIOCOPENLWP, &tmp)) < 0) |
8fc2b417 SG |
4017 | { |
4018 | close (tmpfd); | |
4019 | return 0; | |
4020 | } | |
4021 | ||
4022 | #ifdef PIOCSET /* New method */ | |
4023 | { | |
4024 | long pr_flags; | |
4025 | pr_flags = PR_ASYNC; | |
234a732d | 4026 | ioctl (pip -> ctl_fd, PIOCSET, &pr_flags); |
8fc2b417 SG |
4027 | } |
4028 | #endif | |
4029 | ||
234a732d GN |
4030 | /* keep extra fds in sync */ |
4031 | pip->as_fd = pip->ctl_fd; | |
4032 | pip->map_fd = pip->ctl_fd; | |
4033 | pip->status_fd = pip->ctl_fd; | |
4034 | ||
8fc2b417 SG |
4035 | close (tmpfd); /* All done with main pid */ |
4036 | #endif /* PIOCOPENLWP */ | |
4037 | ||
234a732d GN |
4038 | #endif /* HAVE_MULTIPLE_PROC_FDS */ |
4039 | ||
de43d7d0 | 4040 | return 1; |
a39ad5ce FF |
4041 | } |
4042 | ||
f66f459f | 4043 | static char * |
1ab3bf1b JG |
4044 | mappingflags (flags) |
4045 | long flags; | |
a39ad5ce | 4046 | { |
5c1c5e67 | 4047 | static char asciiflags[8]; |
a39ad5ce | 4048 | |
5c1c5e67 FF |
4049 | strcpy (asciiflags, "-------"); |
4050 | #if defined (MA_PHYS) | |
4051 | if (flags & MA_PHYS) asciiflags[0] = 'd'; | |
4052 | #endif | |
4053 | if (flags & MA_STACK) asciiflags[1] = 's'; | |
4054 | if (flags & MA_BREAK) asciiflags[2] = 'b'; | |
4055 | if (flags & MA_SHARED) asciiflags[3] = 's'; | |
4056 | if (flags & MA_READ) asciiflags[4] = 'r'; | |
4057 | if (flags & MA_WRITE) asciiflags[5] = 'w'; | |
4058 | if (flags & MA_EXEC) asciiflags[6] = 'x'; | |
a39ad5ce FF |
4059 | return (asciiflags); |
4060 | } | |
4061 | ||
4062 | static void | |
cc221e76 FF |
4063 | info_proc_flags (pip, summary) |
4064 | struct procinfo *pip; | |
4065 | int summary; | |
4066 | { | |
4067 | struct trans *transp; | |
234a732d GN |
4068 | #ifdef UNIXWARE |
4069 | long flags = pip->prstatus.pr_flags | pip->prstatus.pr_lwp.pr_flags; | |
4070 | #else | |
4071 | long flags = pip->prstatus.pr_flags; | |
4072 | #endif | |
cc221e76 FF |
4073 | |
4074 | printf_filtered ("%-32s", "Process status flags:"); | |
4075 | if (!summary) | |
4076 | { | |
4077 | printf_filtered ("\n\n"); | |
4078 | } | |
4079 | for (transp = pr_flag_table; transp -> name != NULL; transp++) | |
4080 | { | |
234a732d | 4081 | if (flags & transp -> value) |
cc221e76 FF |
4082 | { |
4083 | if (summary) | |
4084 | { | |
4085 | printf_filtered ("%s ", transp -> name); | |
4086 | } | |
4087 | else | |
4088 | { | |
4089 | printf_filtered ("\t%-16s %s.\n", transp -> name, transp -> desc); | |
4090 | } | |
4091 | } | |
4092 | } | |
4093 | printf_filtered ("\n"); | |
4094 | } | |
4095 | ||
4096 | static void | |
4097 | info_proc_stop (pip, summary) | |
4098 | struct procinfo *pip; | |
4099 | int summary; | |
4100 | { | |
4101 | struct trans *transp; | |
4102 | int why; | |
4103 | int what; | |
4104 | ||
234a732d GN |
4105 | #ifdef UNIXWARE |
4106 | why = pip -> prstatus.pr_lwp.pr_why; | |
4107 | what = pip -> prstatus.pr_lwp.pr_what; | |
4108 | #else | |
cc221e76 FF |
4109 | why = pip -> prstatus.pr_why; |
4110 | what = pip -> prstatus.pr_what; | |
234a732d | 4111 | #endif |
cc221e76 | 4112 | |
234a732d GN |
4113 | #ifdef UNIXWARE |
4114 | if (pip -> prstatus.pr_lwp.pr_flags & PR_STOPPED) | |
4115 | #else | |
cc221e76 | 4116 | if (pip -> prstatus.pr_flags & PR_STOPPED) |
234a732d | 4117 | #endif |
cc221e76 FF |
4118 | { |
4119 | printf_filtered ("%-32s", "Reason for stopping:"); | |
4120 | if (!summary) | |
4121 | { | |
4122 | printf_filtered ("\n\n"); | |
4123 | } | |
4124 | for (transp = pr_why_table; transp -> name != NULL; transp++) | |
4125 | { | |
4126 | if (why == transp -> value) | |
4127 | { | |
4128 | if (summary) | |
4129 | { | |
4130 | printf_filtered ("%s ", transp -> name); | |
4131 | } | |
4132 | else | |
4133 | { | |
4134 | printf_filtered ("\t%-16s %s.\n", | |
4135 | transp -> name, transp -> desc); | |
4136 | } | |
4137 | break; | |
4138 | } | |
4139 | } | |
4140 | ||
4141 | /* Use the pr_why field to determine what the pr_what field means, and | |
4142 | print more information. */ | |
4143 | ||
4144 | switch (why) | |
4145 | { | |
4146 | case PR_REQUESTED: | |
4147 | /* pr_what is unused for this case */ | |
4148 | break; | |
4149 | case PR_JOBCONTROL: | |
4150 | case PR_SIGNALLED: | |
4151 | if (summary) | |
4152 | { | |
4153 | printf_filtered ("%s ", signalname (what)); | |
4154 | } | |
4155 | else | |
4156 | { | |
4157 | printf_filtered ("\t%-16s %s.\n", signalname (what), | |
4ace50a5 | 4158 | safe_strsignal (what)); |
cc221e76 FF |
4159 | } |
4160 | break; | |
4161 | case PR_SYSENTRY: | |
4162 | if (summary) | |
4163 | { | |
4164 | printf_filtered ("%s ", syscallname (what)); | |
4165 | } | |
4166 | else | |
4167 | { | |
4168 | printf_filtered ("\t%-16s %s.\n", syscallname (what), | |
4169 | "Entered this system call"); | |
4170 | } | |
4171 | break; | |
4172 | case PR_SYSEXIT: | |
4173 | if (summary) | |
4174 | { | |
4175 | printf_filtered ("%s ", syscallname (what)); | |
4176 | } | |
4177 | else | |
4178 | { | |
4179 | printf_filtered ("\t%-16s %s.\n", syscallname (what), | |
4180 | "Returned from this system call"); | |
4181 | } | |
4182 | break; | |
4183 | case PR_FAULTED: | |
4184 | if (summary) | |
4185 | { | |
4186 | printf_filtered ("%s ", | |
4187 | lookupname (faults_table, what, "fault")); | |
4188 | } | |
4189 | else | |
4190 | { | |
4191 | printf_filtered ("\t%-16s %s.\n", | |
4192 | lookupname (faults_table, what, "fault"), | |
4193 | lookupdesc (faults_table, what)); | |
4194 | } | |
4195 | break; | |
4196 | } | |
4197 | printf_filtered ("\n"); | |
4198 | } | |
4199 | } | |
4200 | ||
4201 | static void | |
4202 | info_proc_siginfo (pip, summary) | |
4203 | struct procinfo *pip; | |
4204 | int summary; | |
4205 | { | |
4206 | struct siginfo *sip; | |
4207 | ||
234a732d GN |
4208 | #ifdef UNIXWARE |
4209 | if ((pip -> prstatus.pr_lwp.pr_flags & PR_STOPPED) && | |
4210 | (pip -> prstatus.pr_lwp.pr_why == PR_SIGNALLED || | |
4211 | pip -> prstatus.pr_lwp.pr_why == PR_FAULTED)) | |
4212 | #else | |
cc221e76 FF |
4213 | if ((pip -> prstatus.pr_flags & PR_STOPPED) && |
4214 | (pip -> prstatus.pr_why == PR_SIGNALLED || | |
4215 | pip -> prstatus.pr_why == PR_FAULTED)) | |
234a732d | 4216 | #endif |
cc221e76 FF |
4217 | { |
4218 | printf_filtered ("%-32s", "Additional signal/fault info:"); | |
234a732d GN |
4219 | #ifdef UNIXWARE |
4220 | sip = &pip -> prstatus.pr_lwp.pr_info; | |
4221 | #else | |
cc221e76 | 4222 | sip = &pip -> prstatus.pr_info; |
234a732d | 4223 | #endif |
cc221e76 FF |
4224 | if (summary) |
4225 | { | |
4226 | printf_filtered ("%s ", signalname (sip -> si_signo)); | |
4227 | if (sip -> si_errno > 0) | |
4228 | { | |
4ace50a5 | 4229 | printf_filtered ("%s ", errnoname (sip -> si_errno)); |
cc221e76 FF |
4230 | } |
4231 | if (sip -> si_code <= 0) | |
4232 | { | |
25286543 SG |
4233 | printf_filtered ("sent by %s, uid %d ", |
4234 | target_pid_to_str (sip -> si_pid), | |
cc221e76 FF |
4235 | sip -> si_uid); |
4236 | } | |
4237 | else | |
4238 | { | |
4239 | printf_filtered ("%s ", sigcodename (sip)); | |
4240 | if ((sip -> si_signo == SIGILL) || | |
4241 | (sip -> si_signo == SIGFPE) || | |
4242 | (sip -> si_signo == SIGSEGV) || | |
4243 | (sip -> si_signo == SIGBUS)) | |
4244 | { | |
b9e58503 PS |
4245 | printf_filtered ("addr=%#lx ", |
4246 | (unsigned long) sip -> si_addr); | |
cc221e76 FF |
4247 | } |
4248 | else if ((sip -> si_signo == SIGCHLD)) | |
4249 | { | |
25286543 SG |
4250 | printf_filtered ("child %s, status %u ", |
4251 | target_pid_to_str (sip -> si_pid), | |
cc221e76 FF |
4252 | sip -> si_status); |
4253 | } | |
4254 | else if ((sip -> si_signo == SIGPOLL)) | |
4255 | { | |
4256 | printf_filtered ("band %u ", sip -> si_band); | |
4257 | } | |
4258 | } | |
4259 | } | |
4260 | else | |
4261 | { | |
4262 | printf_filtered ("\n\n"); | |
4263 | printf_filtered ("\t%-16s %s.\n", signalname (sip -> si_signo), | |
4ace50a5 | 4264 | safe_strsignal (sip -> si_signo)); |
cc221e76 FF |
4265 | if (sip -> si_errno > 0) |
4266 | { | |
4267 | printf_filtered ("\t%-16s %s.\n", | |
4ace50a5 FF |
4268 | errnoname (sip -> si_errno), |
4269 | safe_strerror (sip -> si_errno)); | |
cc221e76 FF |
4270 | } |
4271 | if (sip -> si_code <= 0) | |
4272 | { | |
25286543 | 4273 | printf_filtered ("\t%-16u %s\n", sip -> si_pid, /* XXX need target_pid_to_str() */ |
cc221e76 FF |
4274 | "PID of process sending signal"); |
4275 | printf_filtered ("\t%-16u %s\n", sip -> si_uid, | |
4276 | "UID of process sending signal"); | |
4277 | } | |
4278 | else | |
4279 | { | |
4280 | printf_filtered ("\t%-16s %s.\n", sigcodename (sip), | |
4281 | sigcodedesc (sip)); | |
4282 | if ((sip -> si_signo == SIGILL) || | |
4283 | (sip -> si_signo == SIGFPE)) | |
4284 | { | |
b9e58503 PS |
4285 | printf_filtered ("\t%#-16lx %s.\n", |
4286 | (unsigned long) sip -> si_addr, | |
cc221e76 FF |
4287 | "Address of faulting instruction"); |
4288 | } | |
4289 | else if ((sip -> si_signo == SIGSEGV) || | |
4290 | (sip -> si_signo == SIGBUS)) | |
4291 | { | |
b9e58503 PS |
4292 | printf_filtered ("\t%#-16lx %s.\n", |
4293 | (unsigned long) sip -> si_addr, | |
cc221e76 FF |
4294 | "Address of faulting memory reference"); |
4295 | } | |
4296 | else if ((sip -> si_signo == SIGCHLD)) | |
4297 | { | |
25286543 | 4298 | printf_filtered ("\t%-16u %s.\n", sip -> si_pid, /* XXX need target_pid_to_str() */ |
cc221e76 FF |
4299 | "Child process ID"); |
4300 | printf_filtered ("\t%-16u %s.\n", sip -> si_status, | |
4301 | "Child process exit value or signal"); | |
4302 | } | |
4303 | else if ((sip -> si_signo == SIGPOLL)) | |
4304 | { | |
4305 | printf_filtered ("\t%-16u %s.\n", sip -> si_band, | |
4306 | "Band event for POLL_{IN,OUT,MSG}"); | |
4307 | } | |
4308 | } | |
4309 | } | |
4310 | printf_filtered ("\n"); | |
4311 | } | |
4312 | } | |
4313 | ||
4314 | static void | |
4315 | info_proc_syscalls (pip, summary) | |
4316 | struct procinfo *pip; | |
4317 | int summary; | |
4318 | { | |
4319 | int syscallnum; | |
4320 | ||
4321 | if (!summary) | |
4322 | { | |
4323 | ||
4324 | #if 0 /* FIXME: Needs to use gdb-wide configured info about system calls. */ | |
4325 | if (pip -> prstatus.pr_flags & PR_ASLEEP) | |
4326 | { | |
4327 | int syscallnum = pip -> prstatus.pr_reg[R_D0]; | |
4328 | if (summary) | |
4329 | { | |
4330 | printf_filtered ("%-32s", "Sleeping in system call:"); | |
4331 | printf_filtered ("%s", syscallname (syscallnum)); | |
4332 | } | |
4333 | else | |
4334 | { | |
4335 | printf_filtered ("Sleeping in system call '%s'.\n", | |
4336 | syscallname (syscallnum)); | |
4337 | } | |
4338 | } | |
4339 | #endif | |
4340 | ||
234a732d GN |
4341 | #ifndef UNIXWARE |
4342 | if (ioctl (pip -> ctl_fd, PIOCGENTRY, &pip -> entryset) < 0) | |
cc221e76 FF |
4343 | { |
4344 | print_sys_errmsg (pip -> pathname, errno); | |
4345 | error ("PIOCGENTRY failed"); | |
4346 | } | |
4347 | ||
234a732d | 4348 | if (ioctl (pip -> ctl_fd, PIOCGEXIT, &pip -> exitset) < 0) |
cc221e76 FF |
4349 | { |
4350 | print_sys_errmsg (pip -> pathname, errno); | |
4351 | error ("PIOCGEXIT failed"); | |
4352 | } | |
234a732d | 4353 | #endif |
cc221e76 FF |
4354 | |
4355 | printf_filtered ("System call tracing information:\n\n"); | |
4356 | ||
4357 | printf_filtered ("\t%-12s %-8s %-8s\n", | |
4358 | "System call", | |
4359 | "Entry", | |
4360 | "Exit"); | |
4361 | for (syscallnum = 0; syscallnum < MAX_SYSCALLS; syscallnum++) | |
4362 | { | |
4363 | QUIT; | |
4364 | if (syscall_table[syscallnum] != NULL) | |
8fc2b417 SG |
4365 | printf_filtered ("\t%-12s ", syscall_table[syscallnum]); |
4366 | else | |
4367 | printf_filtered ("\t%-12d ", syscallnum); | |
4368 | ||
234a732d GN |
4369 | #ifdef UNIXWARE |
4370 | printf_filtered ("%-8s ", | |
4371 | prismember (&pip->prstatus.pr_sysentry, syscallnum) | |
4372 | ? "on" : "off"); | |
4373 | printf_filtered ("%-8s ", | |
4374 | prismember (&pip->prstatus.pr_sysexit, syscallnum) | |
4375 | ? "on" : "off"); | |
4376 | #else | |
8fc2b417 SG |
4377 | printf_filtered ("%-8s ", |
4378 | prismember (&pip -> entryset, syscallnum) | |
4379 | ? "on" : "off"); | |
4380 | printf_filtered ("%-8s ", | |
4381 | prismember (&pip -> exitset, syscallnum) | |
4382 | ? "on" : "off"); | |
234a732d | 4383 | #endif |
8fc2b417 SG |
4384 | printf_filtered ("\n"); |
4385 | } | |
cc221e76 FF |
4386 | printf_filtered ("\n"); |
4387 | } | |
4388 | } | |
4389 | ||
4390 | static char * | |
4391 | signalname (signo) | |
4392 | int signo; | |
4393 | { | |
26a859ec | 4394 | const char *name; |
4ace50a5 FF |
4395 | static char locbuf[32]; |
4396 | ||
4397 | name = strsigno (signo); | |
4398 | if (name == NULL) | |
4399 | { | |
4400 | sprintf (locbuf, "Signal %d", signo); | |
4401 | } | |
4402 | else | |
4403 | { | |
4404 | sprintf (locbuf, "%s (%d)", name, signo); | |
4405 | } | |
4406 | return (locbuf); | |
4407 | } | |
4408 | ||
4409 | static char * | |
4410 | errnoname (errnum) | |
4411 | int errnum; | |
4412 | { | |
26a859ec | 4413 | const char *name; |
cc221e76 FF |
4414 | static char locbuf[32]; |
4415 | ||
4ace50a5 FF |
4416 | name = strerrno (errnum); |
4417 | if (name == NULL) | |
cc221e76 | 4418 | { |
4ace50a5 | 4419 | sprintf (locbuf, "Errno %d", errnum); |
cc221e76 FF |
4420 | } |
4421 | else | |
4422 | { | |
4ace50a5 | 4423 | sprintf (locbuf, "%s (%d)", name, errnum); |
cc221e76 FF |
4424 | } |
4425 | return (locbuf); | |
4426 | } | |
4427 | ||
4428 | static void | |
4429 | info_proc_signals (pip, summary) | |
4430 | struct procinfo *pip; | |
4431 | int summary; | |
4432 | { | |
4433 | int signo; | |
4434 | ||
4435 | if (!summary) | |
4436 | { | |
234a732d GN |
4437 | #ifndef PROCFS_USE_READ_WRITE |
4438 | if (ioctl (pip -> ctl_fd, PIOCGTRACE, &pip -> trace) < 0) | |
cc221e76 FF |
4439 | { |
4440 | print_sys_errmsg (pip -> pathname, errno); | |
4441 | error ("PIOCGTRACE failed"); | |
4442 | } | |
234a732d | 4443 | #endif |
cc221e76 FF |
4444 | |
4445 | printf_filtered ("Disposition of signals:\n\n"); | |
4446 | printf_filtered ("\t%-15s %-8s %-8s %-8s %s\n\n", | |
4447 | "Signal", "Trace", "Hold", "Pending", "Description"); | |
4448 | for (signo = 0; signo < NSIG; signo++) | |
4449 | { | |
4450 | QUIT; | |
4451 | printf_filtered ("\t%-15s ", signalname (signo)); | |
234a732d GN |
4452 | #ifdef UNIXWARE |
4453 | printf_filtered ("%-8s ", | |
4454 | prismember (&pip -> prstatus.pr_sigtrace, signo) | |
4455 | ? "on" : "off"); | |
4456 | printf_filtered ("%-8s ", | |
4457 | prismember (&pip -> prstatus.pr_lwp.pr_context.uc_sigmask, signo) | |
4458 | ? "on" : "off"); | |
4459 | #else | |
cc221e76 FF |
4460 | printf_filtered ("%-8s ", |
4461 | prismember (&pip -> trace, signo) | |
4462 | ? "on" : "off"); | |
4463 | printf_filtered ("%-8s ", | |
4464 | prismember (&pip -> prstatus.pr_sighold, signo) | |
4465 | ? "on" : "off"); | |
234a732d | 4466 | #endif |
2592eef8 | 4467 | |
234a732d GN |
4468 | #ifdef UNIXWARE |
4469 | if (prismember (&pip->prstatus.pr_sigpend, signo) || | |
4470 | prismember (&pip->prstatus.pr_lwp.pr_lwppend, signo)) | |
4471 | printf_filtered("%-8s ", "yes"); | |
4472 | else | |
4473 | printf_filtered("%-8s ", "no"); | |
4474 | #else /* UNIXWARE */ | |
2592eef8 PS |
4475 | #ifdef PROCFS_SIGPEND_OFFSET |
4476 | /* Alpha OSF/1 numbers the pending signals from 1. */ | |
4477 | printf_filtered ("%-8s ", | |
4478 | (signo ? prismember (&pip -> prstatus.pr_sigpend, | |
4479 | signo - 1) | |
4480 | : 0) | |
4481 | ? "yes" : "no"); | |
4482 | #else | |
cc221e76 FF |
4483 | printf_filtered ("%-8s ", |
4484 | prismember (&pip -> prstatus.pr_sigpend, signo) | |
4485 | ? "yes" : "no"); | |
2592eef8 | 4486 | #endif |
234a732d | 4487 | #endif /* UNIXWARE */ |
4ace50a5 | 4488 | printf_filtered (" %s\n", safe_strsignal (signo)); |
cc221e76 FF |
4489 | } |
4490 | printf_filtered ("\n"); | |
4491 | } | |
4492 | } | |
4493 | ||
4494 | static void | |
4495 | info_proc_faults (pip, summary) | |
4496 | struct procinfo *pip; | |
4497 | int summary; | |
4498 | { | |
4499 | struct trans *transp; | |
4500 | ||
4501 | if (!summary) | |
4502 | { | |
234a732d GN |
4503 | #ifndef UNIXWARE |
4504 | if (ioctl (pip -> ctl_fd, PIOCGFAULT, &pip->fltset.fltset) < 0) | |
cc221e76 FF |
4505 | { |
4506 | print_sys_errmsg (pip -> pathname, errno); | |
4507 | error ("PIOCGFAULT failed"); | |
4508 | } | |
234a732d | 4509 | #endif |
cc221e76 FF |
4510 | |
4511 | printf_filtered ("Current traced hardware fault set:\n\n"); | |
4512 | printf_filtered ("\t%-12s %-8s\n", "Fault", "Trace"); | |
4513 | ||
4514 | for (transp = faults_table; transp -> name != NULL; transp++) | |
4515 | { | |
4516 | QUIT; | |
4517 | printf_filtered ("\t%-12s ", transp -> name); | |
234a732d GN |
4518 | #ifdef UNIXWARE |
4519 | printf_filtered ("%-8s", prismember (&pip->prstatus.pr_flttrace, transp -> value) | |
4520 | ? "on" : "off"); | |
4521 | #else | |
4522 | printf_filtered ("%-8s", prismember (&pip->fltset.fltset, transp -> value) | |
cc221e76 | 4523 | ? "on" : "off"); |
234a732d | 4524 | #endif |
cc221e76 FF |
4525 | printf_filtered ("\n"); |
4526 | } | |
4527 | printf_filtered ("\n"); | |
4528 | } | |
4529 | } | |
4530 | ||
4531 | static void | |
4532 | info_proc_mappings (pip, summary) | |
1ab3bf1b | 4533 | struct procinfo *pip; |
cc221e76 | 4534 | int summary; |
a39ad5ce FF |
4535 | { |
4536 | int nmap; | |
4537 | struct prmap *prmaps; | |
4538 | struct prmap *prmap; | |
234a732d | 4539 | struct stat sbuf; |
a39ad5ce | 4540 | |
cc221e76 | 4541 | if (!summary) |
a39ad5ce | 4542 | { |
cc221e76 | 4543 | printf_filtered ("Mapped address spaces:\n\n"); |
2592eef8 PS |
4544 | #ifdef BFD_HOST_64_BIT |
4545 | printf_filtered (" %18s %18s %10s %10s %7s\n", | |
4546 | #else | |
5c1c5e67 | 4547 | printf_filtered ("\t%10s %10s %10s %10s %7s\n", |
2592eef8 | 4548 | #endif |
cc221e76 FF |
4549 | "Start Addr", |
4550 | " End Addr", | |
4551 | " Size", | |
4552 | " Offset", | |
4553 | "Flags"); | |
234a732d GN |
4554 | #ifdef PROCFS_USE_READ_WRITE |
4555 | if (fstat (pip->map_fd, &sbuf) == 0) | |
4556 | { | |
4557 | nmap = sbuf.st_size / sizeof (prmap_t); | |
4558 | prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps)); | |
4559 | if ((lseek (pip->map_fd, 0, SEEK_SET) == 0) && | |
4560 | (read (pip->map_fd, (char *) prmaps, | |
4561 | nmap * sizeof (*prmaps)) == (nmap * sizeof (*prmaps)))) | |
4562 | { | |
4563 | int i = 0; | |
4564 | for (prmap = prmaps; i < nmap; ++prmap, ++i) | |
4565 | #else | |
4566 | if (ioctl (pip -> ctl_fd, PIOCNMAP, &nmap) == 0) | |
a39ad5ce | 4567 | { |
cc221e76 | 4568 | prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps)); |
234a732d | 4569 | if (ioctl (pip -> ctl_fd, PIOCMAP, prmaps) == 0) |
a39ad5ce | 4570 | { |
cc221e76 | 4571 | for (prmap = prmaps; prmap -> pr_size; ++prmap) |
234a732d | 4572 | #endif /* PROCFS_USE_READ_WRITE */ |
cc221e76 | 4573 | { |
2592eef8 PS |
4574 | #ifdef BFD_HOST_64_BIT |
4575 | printf_filtered (" %#18lx %#18lx %#10x %#10x %7s\n", | |
4576 | #else | |
4577 | printf_filtered ("\t%#10lx %#10lx %#10x %#10x %7s\n", | |
4578 | #endif | |
4579 | (unsigned long)prmap -> pr_vaddr, | |
4580 | (unsigned long)prmap -> pr_vaddr | |
4581 | + prmap -> pr_size - 1, | |
cc221e76 FF |
4582 | prmap -> pr_size, |
4583 | prmap -> pr_off, | |
4584 | mappingflags (prmap -> pr_mflags)); | |
4585 | } | |
a39ad5ce FF |
4586 | } |
4587 | } | |
cc221e76 | 4588 | printf_filtered ("\n"); |
a39ad5ce | 4589 | } |
a39ad5ce FF |
4590 | } |
4591 | ||
4592 | /* | |
4593 | ||
4594 | LOCAL FUNCTION | |
4595 | ||
cc221e76 | 4596 | info_proc -- implement the "info proc" command |
a39ad5ce FF |
4597 | |
4598 | SYNOPSIS | |
4599 | ||
cc221e76 | 4600 | void info_proc (char *args, int from_tty) |
a39ad5ce FF |
4601 | |
4602 | DESCRIPTION | |
4603 | ||
4604 | Implement gdb's "info proc" command by using the /proc interface | |
4605 | to print status information about any currently running process. | |
4606 | ||
4607 | Examples of the use of "info proc" are: | |
4608 | ||
cc221e76 FF |
4609 | info proc (prints summary info for current inferior) |
4610 | info proc 123 (prints summary info for process with pid 123) | |
4611 | info proc mappings (prints address mappings) | |
4612 | info proc times (prints process/children times) | |
4613 | info proc id (prints pid, ppid, gid, sid, etc) | |
3fbdd536 | 4614 | FIXME: i proc id not implemented. |
cc221e76 | 4615 | info proc status (prints general process state info) |
3fbdd536 | 4616 | FIXME: i proc status not implemented. |
cc221e76 FF |
4617 | info proc signals (prints info about signal handling) |
4618 | info proc all (prints all info) | |
a39ad5ce FF |
4619 | |
4620 | */ | |
4621 | ||
4622 | static void | |
cc221e76 | 4623 | info_proc (args, from_tty) |
1ab3bf1b JG |
4624 | char *args; |
4625 | int from_tty; | |
a39ad5ce | 4626 | { |
3780c337 | 4627 | int pid; |
a39ad5ce FF |
4628 | struct procinfo *pip; |
4629 | struct cleanup *old_chain; | |
cc221e76 FF |
4630 | char **argv; |
4631 | int argsize; | |
4632 | int summary = 1; | |
4633 | int flags = 0; | |
4634 | int syscalls = 0; | |
4635 | int signals = 0; | |
4636 | int faults = 0; | |
4637 | int mappings = 0; | |
4638 | int times = 0; | |
4639 | int id = 0; | |
4640 | int status = 0; | |
4641 | int all = 0; | |
8fc2b417 | 4642 | int nlwp; |
47ef0da5 | 4643 | int *lwps; |
a39ad5ce FF |
4644 | |
4645 | old_chain = make_cleanup (null_cleanup, 0); | |
4646 | ||
de43d7d0 SG |
4647 | /* Default to using the current inferior if no pid specified. Note |
4648 | that inferior_pid may be 0, hence we set okerr. */ | |
a39ad5ce | 4649 | |
3780c337 MS |
4650 | pid = inferior_pid & 0x7fffffff; /* strip off sol-thread bit */ |
4651 | if (!(pip = find_procinfo (pid, 1))) /* inferior_pid no good? */ | |
4652 | pip = procinfo_list; /* take first available */ | |
4653 | pid = pid & 0xffff; /* extract "real" pid */ | |
a39ad5ce | 4654 | |
a39ad5ce | 4655 | if (args != NULL) |
35f5886e | 4656 | { |
cc221e76 | 4657 | if ((argv = buildargv (args)) == NULL) |
a39ad5ce | 4658 | { |
cc221e76 FF |
4659 | nomem (0); |
4660 | } | |
4661 | make_cleanup (freeargv, (char *) argv); | |
4662 | ||
4663 | while (*argv != NULL) | |
4664 | { | |
4665 | argsize = strlen (*argv); | |
4666 | if (argsize >= 1 && strncmp (*argv, "all", argsize) == 0) | |
4667 | { | |
4668 | summary = 0; | |
4669 | all = 1; | |
4670 | } | |
4671 | else if (argsize >= 2 && strncmp (*argv, "faults", argsize) == 0) | |
4672 | { | |
4673 | summary = 0; | |
4674 | faults = 1; | |
4675 | } | |
4676 | else if (argsize >= 2 && strncmp (*argv, "flags", argsize) == 0) | |
4677 | { | |
4678 | summary = 0; | |
4679 | flags = 1; | |
4680 | } | |
4681 | else if (argsize >= 1 && strncmp (*argv, "id", argsize) == 0) | |
4682 | { | |
4683 | summary = 0; | |
4684 | id = 1; | |
4685 | } | |
4686 | else if (argsize >= 1 && strncmp (*argv, "mappings", argsize) == 0) | |
4687 | { | |
4688 | summary = 0; | |
4689 | mappings = 1; | |
4690 | } | |
4691 | else if (argsize >= 2 && strncmp (*argv, "signals", argsize) == 0) | |
4692 | { | |
4693 | summary = 0; | |
4694 | signals = 1; | |
4695 | } | |
4696 | else if (argsize >= 2 && strncmp (*argv, "status", argsize) == 0) | |
4697 | { | |
4698 | summary = 0; | |
4699 | status = 1; | |
4700 | } | |
4701 | else if (argsize >= 2 && strncmp (*argv, "syscalls", argsize) == 0) | |
4702 | { | |
4703 | summary = 0; | |
4704 | syscalls = 1; | |
4705 | } | |
4706 | else if (argsize >= 1 && strncmp (*argv, "times", argsize) == 0) | |
a39ad5ce | 4707 | { |
cc221e76 FF |
4708 | summary = 0; |
4709 | times = 1; | |
a39ad5ce | 4710 | } |
de43d7d0 | 4711 | else if ((pid = atoi (*argv)) > 0) |
a39ad5ce | 4712 | { |
de43d7d0 SG |
4713 | pip = (struct procinfo *) xmalloc (sizeof (struct procinfo)); |
4714 | memset (pip, 0, sizeof (*pip)); | |
4715 | ||
4716 | pip->pid = pid; | |
234a732d | 4717 | if (!open_proc_file (pid, pip, O_RDONLY, 0)) |
a39ad5ce FF |
4718 | { |
4719 | perror_with_name (pip -> pathname); | |
4720 | /* NOTREACHED */ | |
4721 | } | |
8fc2b417 | 4722 | pid = pip->pid; |
a39ad5ce FF |
4723 | make_cleanup (close_proc_file, pip); |
4724 | } | |
cc221e76 FF |
4725 | else if (**argv != '\000') |
4726 | { | |
4727 | error ("Unrecognized or ambiguous keyword `%s'.", *argv); | |
4728 | } | |
4729 | argv++; | |
a39ad5ce | 4730 | } |
35f5886e | 4731 | } |
a39ad5ce FF |
4732 | |
4733 | /* If we don't have a valid open process at this point, then we have no | |
4734 | inferior or didn't specify a specific pid. */ | |
4735 | ||
de43d7d0 | 4736 | if (!pip) |
35f5886e | 4737 | { |
6fe90fc8 JK |
4738 | error ("\ |
4739 | No process. Start debugging a program or specify an explicit process ID."); | |
35f5886e | 4740 | } |
234a732d GN |
4741 | |
4742 | if (!procfs_read_status (pip)) | |
35f5886e | 4743 | { |
a39ad5ce | 4744 | print_sys_errmsg (pip -> pathname, errno); |
234a732d | 4745 | error ("procfs_read_status failed"); |
35f5886e | 4746 | } |
a39ad5ce | 4747 | |
234a732d | 4748 | #ifndef PROCFS_USE_READ_WRITE |
8fc2b417 SG |
4749 | #ifdef PIOCLWPIDS |
4750 | nlwp = pip->prstatus.pr_nlwp; | |
3780c337 | 4751 | lwps = alloca ((2 * nlwp + 2) * sizeof (*lwps)); |
cc221e76 | 4752 | |
234a732d | 4753 | if (ioctl (pip->ctl_fd, PIOCLWPIDS, lwps)) |
cc221e76 | 4754 | { |
8fc2b417 | 4755 | print_sys_errmsg (pip -> pathname, errno); |
3780c337 | 4756 | error ("PIOCLWPIDS failed"); |
cc221e76 | 4757 | } |
8fc2b417 SG |
4758 | #else /* PIOCLWPIDS */ |
4759 | nlwp = 1; | |
47ef0da5 | 4760 | lwps = alloca ((2 * nlwp + 2) * sizeof *lwps); |
8fc2b417 SG |
4761 | lwps[0] = 0; |
4762 | #endif /* PIOCLWPIDS */ | |
4763 | ||
4764 | for (; nlwp > 0; nlwp--, lwps++) | |
cc221e76 | 4765 | { |
8fc2b417 SG |
4766 | pip = find_procinfo ((*lwps << 16) | pid, 1); |
4767 | ||
4768 | if (!pip) | |
4769 | { | |
4770 | pip = (struct procinfo *) xmalloc (sizeof (struct procinfo)); | |
4771 | memset (pip, 0, sizeof (*pip)); | |
234a732d | 4772 | if (!open_proc_file ((*lwps << 16) | pid, pip, O_RDONLY, 0)) |
8fc2b417 SG |
4773 | continue; |
4774 | ||
4775 | make_cleanup (close_proc_file, pip); | |
4776 | ||
234a732d | 4777 | if (!procfs_read_status (pip)) |
8fc2b417 SG |
4778 | { |
4779 | print_sys_errmsg (pip -> pathname, errno); | |
234a732d | 4780 | error ("procfs_read_status failed"); |
8fc2b417 SG |
4781 | } |
4782 | } | |
4783 | ||
234a732d GN |
4784 | #endif /* PROCFS_USE_READ_WRITE */ |
4785 | ||
8fc2b417 SG |
4786 | /* Print verbose information of the requested type(s), or just a summary |
4787 | of the information for all types. */ | |
4788 | ||
4789 | printf_filtered ("\nInformation for %s.%d:\n\n", pip -> pathname, *lwps); | |
4790 | if (summary || all || flags) | |
4791 | { | |
4792 | info_proc_flags (pip, summary); | |
4793 | } | |
4794 | if (summary || all) | |
4795 | { | |
4796 | info_proc_stop (pip, summary); | |
3780c337 MS |
4797 | supply_gregset (&pip->prstatus.pr_reg); |
4798 | printf_filtered ("PC: "); | |
4799 | print_address (read_pc (), gdb_stdout); | |
4800 | printf_filtered ("\n"); | |
8fc2b417 SG |
4801 | } |
4802 | if (summary || all || signals || faults) | |
4803 | { | |
4804 | info_proc_siginfo (pip, summary); | |
4805 | } | |
4806 | if (summary || all || syscalls) | |
4807 | { | |
4808 | info_proc_syscalls (pip, summary); | |
4809 | } | |
4810 | if (summary || all || mappings) | |
4811 | { | |
4812 | info_proc_mappings (pip, summary); | |
4813 | } | |
4814 | if (summary || all || signals) | |
4815 | { | |
4816 | info_proc_signals (pip, summary); | |
4817 | } | |
4818 | if (summary || all || faults) | |
4819 | { | |
4820 | info_proc_faults (pip, summary); | |
4821 | } | |
4822 | printf_filtered ("\n"); | |
4823 | ||
4824 | /* All done, deal with closing any temporary process info structure, | |
4825 | freeing temporary memory , etc. */ | |
4826 | ||
4827 | do_cleanups (old_chain); | |
234a732d | 4828 | #ifndef PROCFS_USE_READ_WRITE |
cc221e76 | 4829 | } |
234a732d | 4830 | #endif |
8fc2b417 SG |
4831 | } |
4832 | ||
4833 | /* | |
4834 | ||
4835 | LOCAL FUNCTION | |
4836 | ||
4837 | modify_inherit_on_fork_flag - Change the inherit-on-fork flag | |
4838 | ||
4839 | SYNOPSIS | |
4840 | ||
4841 | void modify_inherit_on_fork_flag (fd, flag) | |
4842 | ||
4843 | DESCRIPTION | |
4844 | ||
4845 | Call this routine to modify the inherit-on-fork flag. This routine is | |
4846 | just a nice wrapper to hide the #ifdefs needed by various systems to | |
4847 | control this flag. | |
4848 | ||
4849 | */ | |
4850 | ||
4851 | static void | |
4852 | modify_inherit_on_fork_flag (fd, flag) | |
4853 | int fd; | |
4854 | int flag; | |
4855 | { | |
234a732d | 4856 | #if defined (PIOCSET) || defined (PCSET) |
8fc2b417 | 4857 | long pr_flags; |
b607efe7 | 4858 | #endif |
234a732d GN |
4859 | int retval = 0; |
4860 | struct proc_ctl pctl; | |
8fc2b417 | 4861 | |
234a732d | 4862 | #if defined (PIOCSET) || defined (PCSET) /* New method */ |
8fc2b417 SG |
4863 | pr_flags = PR_FORK; |
4864 | if (flag) | |
234a732d GN |
4865 | { |
4866 | #ifdef PROCFS_USE_READ_WRITE | |
4867 | pctl.cmd = PCSET; | |
4868 | pctl.data = PR_FORK; | |
4869 | if (write (fd, (char *) &pctl, sizeof (struct proc_ctl)) < 0) | |
4870 | retval = -1; | |
4871 | #else | |
4872 | retval = ioctl (fd, PIOCSET, &pr_flags); | |
4873 | #endif | |
4874 | } | |
8fc2b417 | 4875 | else |
234a732d GN |
4876 | { |
4877 | #ifdef PROCFS_USE_READ_WRITE | |
4878 | pctl.cmd = PCRESET; | |
4879 | pctl.data = PR_FORK; | |
4880 | if (write (fd, (char *) &pctl, sizeof (struct proc_ctl)) < 0) | |
4881 | retval = -1; | |
4882 | #else | |
4883 | retval = ioctl (fd, PIOCRESET, &pr_flags); | |
4884 | #endif | |
4885 | } | |
8fc2b417 SG |
4886 | |
4887 | #else | |
4888 | #ifdef PIOCSFORK /* Original method */ | |
4889 | if (flag) | |
234a732d GN |
4890 | { |
4891 | retval = ioctl (fd, PIOCSFORK, NULL); | |
4892 | } | |
8fc2b417 | 4893 | else |
234a732d GN |
4894 | { |
4895 | retval = ioctl (fd, PIOCRFORK, NULL); | |
4896 | } | |
8fc2b417 SG |
4897 | #else |
4898 | Neither PR_FORK nor PIOCSFORK exist!!! | |
4899 | #endif | |
4900 | #endif | |
4901 | ||
4902 | if (!retval) | |
4903 | return; | |
4904 | ||
4905 | print_sys_errmsg ("modify_inherit_on_fork_flag", errno); | |
4906 | error ("PIOCSFORK or PR_FORK modification failed"); | |
4907 | } | |
4908 | ||
4909 | /* | |
4910 | ||
4911 | LOCAL FUNCTION | |
4912 | ||
4913 | modify_run_on_last_close_flag - Change the run-on-last-close flag | |
4914 | ||
4915 | SYNOPSIS | |
4916 | ||
4917 | void modify_run_on_last_close_flag (fd, flag) | |
4918 | ||
4919 | DESCRIPTION | |
4920 | ||
4921 | Call this routine to modify the run-on-last-close flag. This routine | |
4922 | is just a nice wrapper to hide the #ifdefs needed by various systems to | |
4923 | control this flag. | |
4924 | ||
4925 | */ | |
4926 | ||
4927 | static void | |
4928 | modify_run_on_last_close_flag (fd, flag) | |
4929 | int fd; | |
4930 | int flag; | |
4931 | { | |
234a732d | 4932 | #if defined (PIOCSET) || defined (PCSET) |
8fc2b417 | 4933 | long pr_flags; |
b607efe7 | 4934 | #endif |
234a732d GN |
4935 | int retval = 0; |
4936 | struct proc_ctl pctl; | |
8fc2b417 | 4937 | |
234a732d | 4938 | #if defined (PIOCSET) || defined (PCSET) /* New method */ |
8fc2b417 SG |
4939 | pr_flags = PR_RLC; |
4940 | if (flag) | |
234a732d GN |
4941 | { |
4942 | #ifdef PROCFS_USE_READ_WRITE | |
4943 | pctl.cmd = PCSET; | |
4944 | pctl.data = PR_RLC; | |
4945 | if (write (fd, (char *) &pctl, sizeof (struct proc_ctl)) < 0) | |
4946 | retval = -1; | |
4947 | #else | |
4948 | retval = ioctl (fd, PIOCSET, &pr_flags); | |
4949 | #endif | |
4950 | } | |
8fc2b417 | 4951 | else |
234a732d GN |
4952 | { |
4953 | #ifdef PROCFS_USE_READ_WRITE | |
4954 | pctl.cmd = PCRESET; | |
4955 | pctl.data = PR_RLC; | |
4956 | if (write (fd, (char *) &pctl, sizeof (struct proc_ctl)) < 0) | |
4957 | retval = -1; | |
4958 | #else | |
4959 | retval = ioctl (fd, PIOCRESET, &pr_flags); | |
4960 | #endif | |
4961 | } | |
8fc2b417 SG |
4962 | |
4963 | #else | |
4964 | #ifdef PIOCSRLC /* Original method */ | |
4965 | if (flag) | |
4966 | retval = ioctl (fd, PIOCSRLC, NULL); | |
4967 | else | |
4968 | retval = ioctl (fd, PIOCRRLC, NULL); | |
4969 | #else | |
4970 | Neither PR_RLC nor PIOCSRLC exist!!! | |
4971 | #endif | |
4972 | #endif | |
4973 | ||
4974 | if (!retval) | |
4975 | return; | |
4976 | ||
4977 | print_sys_errmsg ("modify_run_on_last_close_flag", errno); | |
4978 | error ("PIOCSRLC or PR_RLC modification failed"); | |
4979 | } | |
4980 | ||
4981 | /* | |
4982 | ||
4983 | LOCAL FUNCTION | |
4984 | ||
4985 | procfs_clear_syscall_trap -- Deletes the trap for the specified system call. | |
4986 | ||
4987 | SYNOPSIS | |
4988 | ||
4989 | void procfs_clear_syscall_trap (struct procinfo *, int syscall_num, int errok) | |
4990 | ||
4991 | DESCRIPTION | |
4992 | ||
4993 | This function function disables traps for the specified system call. | |
4994 | errok is non-zero if errors should be ignored. | |
4995 | */ | |
4996 | ||
4997 | static void | |
4998 | procfs_clear_syscall_trap (pi, syscall_num, errok) | |
4999 | struct procinfo *pi; | |
5000 | int syscall_num; | |
5001 | int errok; | |
5002 | { | |
5003 | sysset_t sysset; | |
5004 | int goterr, i; | |
5005 | ||
234a732d | 5006 | goterr = ioctl (pi->ctl_fd, PIOCGENTRY, &sysset) < 0; |
8fc2b417 SG |
5007 | |
5008 | if (goterr && !errok) | |
cc221e76 | 5009 | { |
8fc2b417 SG |
5010 | print_sys_errmsg (pi->pathname, errno); |
5011 | error ("PIOCGENTRY failed"); | |
cc221e76 | 5012 | } |
8fc2b417 SG |
5013 | |
5014 | if (!goterr) | |
cc221e76 | 5015 | { |
8fc2b417 SG |
5016 | prdelset (&sysset, syscall_num); |
5017 | ||
234a732d | 5018 | if ((ioctl (pi->ctl_fd, PIOCSENTRY, &sysset) < 0) && !errok) |
8fc2b417 SG |
5019 | { |
5020 | print_sys_errmsg (pi->pathname, errno); | |
5021 | error ("PIOCSENTRY failed"); | |
5022 | } | |
cc221e76 | 5023 | } |
8fc2b417 | 5024 | |
234a732d | 5025 | goterr = ioctl (pi->ctl_fd, PIOCGEXIT, &sysset) < 0; |
8fc2b417 SG |
5026 | |
5027 | if (goterr && !errok) | |
cc221e76 | 5028 | { |
8fc2b417 SG |
5029 | procfs_clear_syscall_trap (pi, syscall_num, 1); |
5030 | print_sys_errmsg (pi->pathname, errno); | |
5031 | error ("PIOCGEXIT failed"); | |
cc221e76 | 5032 | } |
8fc2b417 SG |
5033 | |
5034 | if (!goterr) | |
cc221e76 | 5035 | { |
8fc2b417 SG |
5036 | praddset (&sysset, syscall_num); |
5037 | ||
234a732d | 5038 | if ((ioctl (pi->ctl_fd, PIOCSEXIT, &sysset) < 0) && !errok) |
8fc2b417 SG |
5039 | { |
5040 | procfs_clear_syscall_trap (pi, syscall_num, 1); | |
5041 | print_sys_errmsg (pi->pathname, errno); | |
5042 | error ("PIOCSEXIT failed"); | |
5043 | } | |
cc221e76 | 5044 | } |
8fc2b417 SG |
5045 | |
5046 | if (!pi->syscall_handlers) | |
cc221e76 | 5047 | { |
8fc2b417 SG |
5048 | if (!errok) |
5049 | error ("procfs_clear_syscall_trap: syscall_handlers is empty"); | |
5050 | return; | |
cc221e76 | 5051 | } |
a39ad5ce | 5052 | |
8fc2b417 | 5053 | /* Remove handler func from the handler list */ |
a39ad5ce | 5054 | |
8fc2b417 SG |
5055 | for (i = 0; i < pi->num_syscall_handlers; i++) |
5056 | if (pi->syscall_handlers[i].syscall_num == syscall_num) | |
5057 | { | |
5058 | if (i + 1 != pi->num_syscall_handlers) | |
5059 | { /* Not the last entry. | |
5060 | Move subsequent entries fwd. */ | |
5061 | memcpy (&pi->syscall_handlers[i], &pi->syscall_handlers[i + 1], | |
5062 | (pi->num_syscall_handlers - i - 1) | |
5063 | * sizeof (struct procfs_syscall_handler)); | |
5064 | } | |
5065 | ||
5066 | pi->syscall_handlers = xrealloc (pi->syscall_handlers, | |
5067 | (pi->num_syscall_handlers - 1) | |
5068 | * sizeof (struct procfs_syscall_handler)); | |
5069 | pi->num_syscall_handlers--; | |
5070 | return; | |
5071 | } | |
5072 | ||
5073 | if (!errok) | |
5074 | error ("procfs_clear_syscall_trap: Couldn't find handler for sys call %d", | |
5075 | syscall_num); | |
a39ad5ce FF |
5076 | } |
5077 | ||
de43d7d0 SG |
5078 | /* |
5079 | ||
5080 | LOCAL FUNCTION | |
5081 | ||
8fc2b417 SG |
5082 | procfs_set_syscall_trap -- arrange for a function to be called when the |
5083 | child executes the specified system call. | |
de43d7d0 SG |
5084 | |
5085 | SYNOPSIS | |
5086 | ||
8fc2b417 SG |
5087 | void procfs_set_syscall_trap (struct procinfo *, int syscall_num, int flags, |
5088 | syscall_func_t *function) | |
de43d7d0 SG |
5089 | |
5090 | DESCRIPTION | |
5091 | ||
8fc2b417 SG |
5092 | This function sets up an entry and/or exit trap for the specified system |
5093 | call. When the child executes the specified system call, your function | |
5094 | will be called with the call #, a flag that indicates entry or exit, and | |
5095 | pointers to rtnval and statval (which are used by procfs_wait). The | |
5096 | function should return non-zero if something interesting happened, zero | |
5097 | otherwise. | |
de43d7d0 SG |
5098 | */ |
5099 | ||
5100 | static void | |
8fc2b417 | 5101 | procfs_set_syscall_trap (pi, syscall_num, flags, func) |
de43d7d0 | 5102 | struct procinfo *pi; |
8fc2b417 SG |
5103 | int syscall_num; |
5104 | int flags; | |
5105 | syscall_func_t *func; | |
de43d7d0 | 5106 | { |
8fc2b417 | 5107 | sysset_t sysset; |
3780c337 | 5108 | |
8fc2b417 | 5109 | if (flags & PROCFS_SYSCALL_ENTRY) |
de43d7d0 | 5110 | { |
234a732d | 5111 | if (ioctl (pi->ctl_fd, PIOCGENTRY, &sysset) < 0) |
8fc2b417 SG |
5112 | { |
5113 | print_sys_errmsg (pi->pathname, errno); | |
5114 | error ("PIOCGENTRY failed"); | |
5115 | } | |
5116 | ||
5117 | praddset (&sysset, syscall_num); | |
5118 | ||
234a732d | 5119 | if (ioctl (pi->ctl_fd, PIOCSENTRY, &sysset) < 0) |
8fc2b417 SG |
5120 | { |
5121 | print_sys_errmsg (pi->pathname, errno); | |
5122 | error ("PIOCSENTRY failed"); | |
5123 | } | |
de43d7d0 SG |
5124 | } |
5125 | ||
8fc2b417 SG |
5126 | if (flags & PROCFS_SYSCALL_EXIT) |
5127 | { | |
234a732d | 5128 | if (ioctl (pi->ctl_fd, PIOCGEXIT, &sysset) < 0) |
8fc2b417 SG |
5129 | { |
5130 | procfs_clear_syscall_trap (pi, syscall_num, 1); | |
5131 | print_sys_errmsg (pi->pathname, errno); | |
5132 | error ("PIOCGEXIT failed"); | |
5133 | } | |
de43d7d0 | 5134 | |
8fc2b417 | 5135 | praddset (&sysset, syscall_num); |
eca4a350 | 5136 | |
234a732d | 5137 | if (ioctl (pi->ctl_fd, PIOCSEXIT, &sysset) < 0) |
8fc2b417 SG |
5138 | { |
5139 | procfs_clear_syscall_trap (pi, syscall_num, 1); | |
5140 | print_sys_errmsg (pi->pathname, errno); | |
5141 | error ("PIOCSEXIT failed"); | |
5142 | } | |
5143 | } | |
eca4a350 | 5144 | |
8fc2b417 | 5145 | if (!pi->syscall_handlers) |
de43d7d0 | 5146 | { |
8fc2b417 SG |
5147 | pi->syscall_handlers = xmalloc (sizeof (struct procfs_syscall_handler)); |
5148 | pi->syscall_handlers[0].syscall_num = syscall_num; | |
5149 | pi->syscall_handlers[0].func = func; | |
5150 | pi->num_syscall_handlers = 1; | |
de43d7d0 | 5151 | } |
8fc2b417 SG |
5152 | else |
5153 | { | |
5154 | int i; | |
de43d7d0 | 5155 | |
8fc2b417 SG |
5156 | for (i = 0; i < pi->num_syscall_handlers; i++) |
5157 | if (pi->syscall_handlers[i].syscall_num == syscall_num) | |
5158 | { | |
5159 | pi->syscall_handlers[i].func = func; | |
5160 | return; | |
5161 | } | |
de43d7d0 | 5162 | |
8fc2b417 SG |
5163 | pi->syscall_handlers = xrealloc (pi->syscall_handlers, (i + 1) |
5164 | * sizeof (struct procfs_syscall_handler)); | |
5165 | pi->syscall_handlers[i].syscall_num = syscall_num; | |
5166 | pi->syscall_handlers[i].func = func; | |
5167 | pi->num_syscall_handlers++; | |
5168 | } | |
de43d7d0 | 5169 | } |
8fc2b417 SG |
5170 | |
5171 | #ifdef SYS_lwp_create | |
5172 | ||
5173 | /* | |
5174 | ||
5175 | LOCAL FUNCTION | |
5176 | ||
5177 | procfs_lwp_creation_handler - handle exit from the _lwp_create syscall | |
5178 | ||
5179 | SYNOPSIS | |
5180 | ||
5181 | int procfs_lwp_creation_handler (pi, syscall_num, why, rtnvalp, statvalp) | |
5182 | ||
5183 | DESCRIPTION | |
5184 | ||
5185 | This routine is called both when an inferior process and it's new lwp | |
5186 | are about to finish a _lwp_create() system call. This is the system | |
5187 | call that Solaris uses to create a lightweight process. When the | |
5188 | target process gets this event, we can look at sysarg[2] to find the | |
5189 | new childs lwp ID, and create a procinfo struct from that. After that, | |
5190 | we pretend that we got a SIGTRAP, and return non-zero to tell | |
5191 | procfs_wait to wake up. Subsequently, wait_for_inferior gets woken up, | |
5192 | sees the new process and continues it. | |
5193 | ||
5194 | When we see the child exiting from lwp_create, we just contine it, | |
5195 | since everything was handled when the parent trapped. | |
5196 | ||
5197 | NOTES | |
5198 | In effect, we are only paying attention to the parent's completion of | |
5199 | the lwp_create syscall. If we only paid attention to the child | |
5200 | instead, then we wouldn't detect the creation of a suspended thread. | |
5201 | */ | |
5202 | ||
5203 | static int | |
5204 | procfs_lwp_creation_handler (pi, syscall_num, why, rtnvalp, statvalp) | |
5205 | struct procinfo *pi; | |
5206 | int syscall_num; | |
5207 | int why; | |
5208 | int *rtnvalp; | |
5209 | int *statvalp; | |
5210 | { | |
5211 | int lwp_id; | |
5212 | struct procinfo *childpi; | |
5213 | ||
5214 | /* We've just detected the completion of an lwp_create system call. Now we | |
5215 | need to setup a procinfo struct for this thread, and notify the thread | |
5216 | system of the new arrival. */ | |
5217 | ||
5218 | /* If lwp_create failed, then nothing interesting happened. Continue the | |
5219 | process and go back to sleep. */ | |
5220 | ||
5221 | if (pi->prstatus.pr_reg[R_PSR] & PS_FLAG_CARRY) | |
5222 | { /* _lwp_create failed */ | |
5223 | pi->prrun.pr_flags &= PRSTEP; | |
5224 | pi->prrun.pr_flags |= PRCFAULT; | |
5225 | ||
234a732d | 5226 | if (ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0) |
8fc2b417 SG |
5227 | perror_with_name (pi->pathname); |
5228 | ||
5229 | return 0; | |
5230 | } | |
5231 | ||
5232 | /* At this point, the new thread is stopped at it's first instruction, and | |
5233 | the parent is stopped at the exit from lwp_create. */ | |
5234 | ||
5235 | if (pi->new_child) /* Child? */ | |
5236 | { /* Yes, just continue it */ | |
5237 | pi->prrun.pr_flags &= PRSTEP; | |
5238 | pi->prrun.pr_flags |= PRCFAULT; | |
5239 | ||
5240 | if ((pi->prstatus.pr_flags & PR_ISTOP) | |
234a732d | 5241 | && ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0) |
8fc2b417 SG |
5242 | perror_with_name (pi->pathname); |
5243 | ||
5244 | pi->new_child = 0; /* No longer new */ | |
5245 | ||
5246 | return 0; | |
5247 | } | |
5248 | ||
5249 | /* We're the proud parent of a new thread. Setup an exit trap for lwp_create | |
5250 | in the child and continue the parent. */ | |
3780c337 | 5251 | |
8fc2b417 SG |
5252 | /* Third arg is pointer to new thread id. */ |
5253 | lwp_id = read_memory_integer (pi->prstatus.pr_sysarg[2], sizeof (int)); | |
5254 | ||
5255 | lwp_id = (lwp_id << 16) | PIDGET (pi->pid); | |
5256 | ||
5257 | childpi = create_procinfo (lwp_id); | |
5258 | ||
5259 | /* The new process has actually inherited the lwp_create syscall trap from | |
3780c337 | 5260 | it's parent, but we still have to call this to register handlers for |
8fc2b417 SG |
5261 | that child. */ |
5262 | ||
3780c337 MS |
5263 | procfs_set_inferior_syscall_traps (childpi); |
5264 | add_thread (lwp_id); | |
5265 | printf_filtered ("[New %s]\n", target_pid_to_str (lwp_id)); | |
8fc2b417 | 5266 | |
3780c337 | 5267 | /* Continue the parent */ |
8fc2b417 | 5268 | |
3780c337 MS |
5269 | pi->prrun.pr_flags &= PRSTEP; |
5270 | pi->prrun.pr_flags |= PRCFAULT; | |
5271 | if (ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0) | |
5272 | perror_with_name (pi->pathname); | |
8fc2b417 | 5273 | |
3780c337 MS |
5274 | /* The new child may have been created in one of two states: |
5275 | SUSPENDED or RUNNABLE. If runnable, we will simply signal it to run. | |
5276 | If suspended, we flag it to be continued later, when it has an event. */ | |
5277 | ||
5278 | if (childpi->prstatus.pr_why == PR_SUSPENDED) | |
5279 | childpi->new_child = 1; /* Flag this as an unseen child process */ | |
5280 | else | |
5281 | { | |
5282 | /* Continue the child */ | |
5283 | childpi->prrun.pr_flags &= PRSTEP; | |
5284 | childpi->prrun.pr_flags |= PRCFAULT; | |
5285 | ||
5286 | if (ioctl (childpi->ctl_fd, PIOCRUN, &childpi->prrun) != 0) | |
5287 | perror_with_name (childpi->pathname); | |
5288 | } | |
5289 | return 0; | |
8fc2b417 SG |
5290 | } |
5291 | #endif /* SYS_lwp_create */ | |
de43d7d0 | 5292 | |
3fbdd536 JG |
5293 | /* Fork an inferior process, and start debugging it with /proc. */ |
5294 | ||
5295 | static void | |
5296 | procfs_create_inferior (exec_file, allargs, env) | |
5297 | char *exec_file; | |
5298 | char *allargs; | |
5299 | char **env; | |
5300 | { | |
08f74b92 JK |
5301 | char *shell_file = getenv ("SHELL"); |
5302 | char *tryname; | |
5303 | if (shell_file != NULL && strchr (shell_file, '/') == NULL) | |
5304 | { | |
5305 | ||
5306 | /* We will be looking down the PATH to find shell_file. If we | |
5307 | just do this the normal way (via execlp, which operates by | |
5308 | attempting an exec for each element of the PATH until it | |
5309 | finds one which succeeds), then there will be an exec for | |
5310 | each failed attempt, each of which will cause a PR_SYSEXIT | |
5311 | stop, and we won't know how to distinguish the PR_SYSEXIT's | |
5312 | for these failed execs with the ones for successful execs | |
5313 | (whether the exec has succeeded is stored at that time in the | |
5314 | carry bit or some such architecture-specific and | |
5315 | non-ABI-specified place). | |
5316 | ||
5317 | So I can't think of anything better than to search the PATH | |
5318 | now. This has several disadvantages: (1) There is a race | |
5319 | condition; if we find a file now and it is deleted before we | |
5320 | exec it, we lose, even if the deletion leaves a valid file | |
5321 | further down in the PATH, (2) there is no way to know exactly | |
5322 | what an executable (in the sense of "capable of being | |
5323 | exec'd") file is. Using access() loses because it may lose | |
5324 | if the caller is the superuser; failing to use it loses if | |
5325 | there are ACLs or some such. */ | |
5326 | ||
5327 | char *p; | |
5328 | char *p1; | |
f93b941b JK |
5329 | /* FIXME-maybe: might want "set path" command so user can change what |
5330 | path is used from within GDB. */ | |
08f74b92 JK |
5331 | char *path = getenv ("PATH"); |
5332 | int len; | |
5333 | struct stat statbuf; | |
5334 | ||
5335 | if (path == NULL) | |
5336 | path = "/bin:/usr/bin"; | |
5337 | ||
5338 | tryname = alloca (strlen (path) + strlen (shell_file) + 2); | |
5339 | for (p = path; p != NULL; p = p1 ? p1 + 1: NULL) | |
5340 | { | |
5341 | p1 = strchr (p, ':'); | |
5342 | if (p1 != NULL) | |
5343 | len = p1 - p; | |
5344 | else | |
5345 | len = strlen (p); | |
5346 | strncpy (tryname, p, len); | |
5347 | tryname[len] = '\0'; | |
5348 | strcat (tryname, "/"); | |
5349 | strcat (tryname, shell_file); | |
5350 | if (access (tryname, X_OK) < 0) | |
5351 | continue; | |
5352 | if (stat (tryname, &statbuf) < 0) | |
5353 | continue; | |
5354 | if (!S_ISREG (statbuf.st_mode)) | |
5355 | /* We certainly need to reject directories. I'm not quite | |
5356 | as sure about FIFOs, sockets, etc., but I kind of doubt | |
5357 | that people want to exec() these things. */ | |
5358 | continue; | |
5359 | break; | |
5360 | } | |
5361 | if (p == NULL) | |
5362 | /* Not found. This must be an error rather than merely passing | |
5363 | the file to execlp(), because execlp() would try all the | |
5364 | exec()s, causing GDB to get confused. */ | |
5365 | error ("Can't find shell %s in PATH", shell_file); | |
5366 | ||
5367 | shell_file = tryname; | |
5368 | } | |
5369 | ||
3fbdd536 | 5370 | fork_inferior (exec_file, allargs, env, |
08f74b92 JK |
5371 | proc_set_exec_trap, procfs_init_inferior, shell_file); |
5372 | ||
3fbdd536 JG |
5373 | /* We are at the first instruction we care about. */ |
5374 | /* Pedal to the metal... */ | |
de43d7d0 | 5375 | |
67ac9759 | 5376 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_0, 0); |
3fbdd536 JG |
5377 | } |
5378 | ||
5379 | /* Clean up after the inferior dies. */ | |
5380 | ||
5381 | static void | |
5382 | procfs_mourn_inferior () | |
5383 | { | |
fb63d460 | 5384 | struct procinfo *pi; |
cd4104e0 | 5385 | struct procinfo *next_pi; |
fb63d460 | 5386 | |
cd4104e0 TL |
5387 | for (pi = procinfo_list; pi; pi = next_pi) |
5388 | { | |
5389 | next_pi = pi->next; | |
5390 | unconditionally_kill_inferior (pi); | |
5391 | } | |
fb63d460 | 5392 | |
3fbdd536 JG |
5393 | unpush_target (&procfs_ops); |
5394 | generic_mourn_inferior (); | |
5395 | } | |
5396 | ||
cd4104e0 | 5397 | |
3fbdd536 JG |
5398 | /* Mark our target-struct as eligible for stray "run" and "attach" commands. */ |
5399 | static int | |
5400 | procfs_can_run () | |
5401 | { | |
8fc2b417 SG |
5402 | /* This variable is controlled by modules that sit atop procfs that may layer |
5403 | their own process structure atop that provided here. sol-thread.c does | |
5404 | this because of the Solaris two-level thread model. */ | |
5405 | ||
5406 | return !procfs_suppress_run; | |
3fbdd536 | 5407 | } |
f5a8f1a6 | 5408 | #ifdef TARGET_HAS_HARDWARE_WATCHPOINTS |
999dd04b JL |
5409 | \f |
5410 | /* Insert a watchpoint */ | |
5411 | int | |
5412 | procfs_set_watchpoint(pid, addr, len, rw) | |
5413 | int pid; | |
5414 | CORE_ADDR addr; | |
5415 | int len; | |
5416 | int rw; | |
5417 | { | |
5418 | struct procinfo *pi; | |
5419 | prwatch_t wpt; | |
5420 | ||
5421 | pi = find_procinfo (pid == -1 ? inferior_pid : pid, 0); | |
5422 | wpt.pr_vaddr = (caddr_t)addr; | |
5423 | wpt.pr_size = len; | |
5424 | wpt.pr_wflags = ((rw & 1) ? MA_READ : 0) | ((rw & 2) ? MA_WRITE : 0); | |
234a732d | 5425 | if (ioctl (pi->ctl_fd, PIOCSWATCH, &wpt) < 0) |
999dd04b JL |
5426 | { |
5427 | if (errno == E2BIG) | |
5428 | return -1; | |
5429 | /* Currently it sometimes happens that the same watchpoint gets | |
5430 | deleted twice - don't die in this case (FIXME please) */ | |
5431 | if (errno == ESRCH && len == 0) | |
5432 | return 0; | |
5433 | print_sys_errmsg (pi->pathname, errno); | |
5434 | error ("PIOCSWATCH failed"); | |
5435 | } | |
5436 | return 0; | |
5437 | } | |
5438 | ||
5439 | int | |
5440 | procfs_stopped_by_watchpoint(pid) | |
5441 | int pid; | |
5442 | { | |
5443 | struct procinfo *pi; | |
5444 | short what; | |
5445 | short why; | |
5446 | ||
5447 | pi = find_procinfo (pid == -1 ? inferior_pid : pid, 0); | |
5448 | if (pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP)) | |
5449 | { | |
5450 | why = pi->prstatus.pr_why; | |
5451 | what = pi->prstatus.pr_what; | |
5452 | if (why == PR_FAULTED | |
6bc194d2 | 5453 | #if defined (FLTWATCH) && defined (FLTKWATCH) |
255181a9 | 5454 | && (what == FLTWATCH || what == FLTKWATCH) |
6bc194d2 JL |
5455 | #else |
5456 | #ifdef FLTWATCH | |
5457 | && (what == FLTWATCH) | |
5458 | #endif | |
5459 | #ifdef FLTKWATCH | |
5460 | && (what == FLTKWATCH) | |
5461 | #endif | |
72b8ca51 | 5462 | #endif |
6bc194d2 | 5463 | ) |
999dd04b JL |
5464 | return what; |
5465 | } | |
5466 | return 0; | |
5467 | } | |
234a732d | 5468 | #endif /* TARGET_HAS_HARDWARE_WATCHPOINTS */ |
999dd04b | 5469 | |
8fc2b417 SG |
5470 | /* Why is this necessary? Shouldn't dead threads just be removed from the |
5471 | thread database? */ | |
5472 | ||
9b33e492 | 5473 | static int |
8fc2b417 SG |
5474 | procfs_thread_alive (pid) |
5475 | int pid; | |
5476 | { | |
3780c337 MS |
5477 | struct procinfo *pi, *next_pi; |
5478 | ||
5479 | for (pi = procinfo_list; pi; pi = next_pi) | |
5480 | { | |
5481 | next_pi = pi->next; | |
5482 | if (pi -> pid == pid) | |
5483 | if (procfs_read_status (pi)) /* alive */ | |
5484 | return 1; | |
5485 | else /* defunct (exited) */ | |
5486 | { | |
5487 | close_proc_file (pi); | |
5488 | return 0; | |
5489 | } | |
5490 | } | |
5491 | return 0; | |
5492 | } | |
5493 | ||
5494 | int | |
5495 | procfs_first_available () | |
5496 | { | |
5497 | struct procinfo *pi; | |
5498 | ||
5499 | for (pi = procinfo_list; pi; pi = pi->next) | |
5500 | { | |
5501 | if (procfs_read_status (pi)) | |
5502 | return pi->pid; | |
5503 | } | |
5504 | return -1; | |
8fc2b417 SG |
5505 | } |
5506 | ||
78b459a7 SG |
5507 | /* Send a SIGINT to the process group. This acts just like the user typed a |
5508 | ^C on the controlling terminal. | |
5509 | ||
5510 | XXX - This may not be correct for all systems. Some may want to use | |
5511 | killpg() instead of kill (-pgrp). */ | |
5512 | ||
9b33e492 | 5513 | static void |
2592eef8 | 5514 | procfs_stop () |
78b459a7 SG |
5515 | { |
5516 | extern pid_t inferior_process_group; | |
5517 | ||
5518 | kill (-inferior_process_group, SIGINT); | |
5519 | } | |
9b33e492 SG |
5520 | \f |
5521 | /* Convert a pid to printable form. */ | |
78b459a7 | 5522 | |
9b33e492 SG |
5523 | #ifdef TIDGET |
5524 | char * | |
5525 | procfs_pid_to_str (pid) | |
5526 | int pid; | |
5527 | { | |
5528 | static char buf[100]; | |
5529 | ||
5530 | sprintf (buf, "Kernel thread %d", TIDGET (pid)); | |
5531 | ||
5532 | return buf; | |
5533 | } | |
5534 | #endif /* TIDGET */ | |
3fbdd536 JG |
5535 | \f |
5536 | struct target_ops procfs_ops = { | |
5537 | "procfs", /* to_shortname */ | |
5538 | "Unix /proc child process", /* to_longname */ | |
5539 | "Unix /proc child process (started by the \"run\" command).", /* to_doc */ | |
5540 | procfs_open, /* to_open */ | |
5541 | 0, /* to_close */ | |
5542 | procfs_attach, /* to_attach */ | |
5543 | procfs_detach, /* to_detach */ | |
5544 | procfs_resume, /* to_resume */ | |
5545 | procfs_wait, /* to_wait */ | |
5546 | procfs_fetch_registers, /* to_fetch_registers */ | |
5547 | procfs_store_registers, /* to_store_registers */ | |
5548 | procfs_prepare_to_store, /* to_prepare_to_store */ | |
5549 | procfs_xfer_memory, /* to_xfer_memory */ | |
5550 | procfs_files_info, /* to_files_info */ | |
5551 | memory_insert_breakpoint, /* to_insert_breakpoint */ | |
5552 | memory_remove_breakpoint, /* to_remove_breakpoint */ | |
5553 | terminal_init_inferior, /* to_terminal_init */ | |
5554 | terminal_inferior, /* to_terminal_inferior */ | |
5555 | terminal_ours_for_output, /* to_terminal_ours_for_output */ | |
5556 | terminal_ours, /* to_terminal_ours */ | |
5557 | child_terminal_info, /* to_terminal_info */ | |
5558 | procfs_kill_inferior, /* to_kill */ | |
5559 | 0, /* to_load */ | |
5560 | 0, /* to_lookup_symbol */ | |
5561 | procfs_create_inferior, /* to_create_inferior */ | |
5562 | procfs_mourn_inferior, /* to_mourn_inferior */ | |
5563 | procfs_can_run, /* to_can_run */ | |
3950a34e | 5564 | procfs_notice_signals, /* to_notice_signals */ |
8fc2b417 | 5565 | procfs_thread_alive, /* to_thread_alive */ |
2592eef8 | 5566 | procfs_stop, /* to_stop */ |
3fbdd536 JG |
5567 | process_stratum, /* to_stratum */ |
5568 | 0, /* to_next */ | |
5569 | 1, /* to_has_all_memory */ | |
5570 | 1, /* to_has_memory */ | |
5571 | 1, /* to_has_stack */ | |
5572 | 1, /* to_has_registers */ | |
5573 | 1, /* to_has_execution */ | |
5574 | 0, /* sections */ | |
5575 | 0, /* sections_end */ | |
5576 | OPS_MAGIC /* to_magic */ | |
5577 | }; | |
5578 | ||
3fbdd536 JG |
5579 | void |
5580 | _initialize_procfs () | |
5581 | { | |
2592eef8 | 5582 | #ifdef HAVE_OPTIONAL_PROC_FS |
234a732d | 5583 | char procname[MAX_PROC_NAME_SIZE]; |
2592eef8 PS |
5584 | int fd; |
5585 | ||
5586 | /* If we have an optional /proc filesystem (e.g. under OSF/1), | |
5587 | don't add procfs support if we cannot access the running | |
5588 | GDB via /proc. */ | |
234a732d | 5589 | sprintf (procname, STATUS_PROC_NAME_FMT, getpid ()); |
2592eef8 PS |
5590 | if ((fd = open (procname, O_RDONLY)) < 0) |
5591 | return; | |
5592 | close (fd); | |
5593 | #endif | |
5594 | ||
3fbdd536 JG |
5595 | add_target (&procfs_ops); |
5596 | ||
3780c337 | 5597 | add_info ("processes", info_proc, |
cc221e76 FF |
5598 | "Show process status information using /proc entry.\n\ |
5599 | Specify process id or use current inferior by default.\n\ | |
5600 | Specify keywords for detailed information; default is summary.\n\ | |
5601 | Keywords are: `all', `faults', `flags', `id', `mappings', `signals',\n\ | |
5602 | `status', `syscalls', and `times'.\n\ | |
3fbdd536 | 5603 | Unambiguous abbreviations may be used."); |
a39ad5ce | 5604 | |
cc221e76 | 5605 | init_syscall_table (); |
35f5886e | 5606 | } |