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35f5886e | 1 | /* Machine independent support for SVR4 /proc (process file system) for GDB. |
2592eef8 | 2 | Copyright 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc. |
35f5886e FF |
3 | Written by Fred Fish at Cygnus Support. |
4 | ||
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
20 | ||
21 | ||
22 | /* N O T E S | |
23 | ||
24 | For information on the details of using /proc consult section proc(4) | |
25 | in the UNIX System V Release 4 System Administrator's Reference Manual. | |
26 | ||
27 | The general register and floating point register sets are manipulated by | |
28 | separate ioctl's. This file makes the assumption that if FP0_REGNUM is | |
29 | defined, then support for the floating point register set is desired, | |
30 | regardless of whether or not the actual target has floating point hardware. | |
31 | ||
32 | */ | |
33 | ||
34 | ||
5129100c | 35 | #include "defs.h" |
35f5886e | 36 | |
08f74b92 | 37 | #include <sys/types.h> |
407a8389 | 38 | #include <time.h> |
2592eef8 PS |
39 | #include <sys/fault.h> |
40 | #include <sys/syscall.h> | |
35f5886e FF |
41 | #include <sys/procfs.h> |
42 | #include <fcntl.h> | |
43 | #include <errno.h> | |
51b57ded | 44 | #include <string.h> |
de43d7d0 SG |
45 | #include <stropts.h> |
46 | #include <poll.h> | |
08f74b92 JK |
47 | #include <unistd.h> |
48 | #include <sys/stat.h> | |
35f5886e | 49 | |
35f5886e FF |
50 | #include "inferior.h" |
51 | #include "target.h" | |
51b57ded | 52 | #include "command.h" |
3fbdd536 | 53 | #include "gdbcore.h" |
e3be225e | 54 | #include "thread.h" |
cc221e76 FF |
55 | |
56 | #define MAX_SYSCALLS 256 /* Maximum number of syscalls for table */ | |
35f5886e FF |
57 | |
58 | #ifndef PROC_NAME_FMT | |
6c316cfd | 59 | #define PROC_NAME_FMT "/proc/%05d" |
35f5886e FF |
60 | #endif |
61 | ||
3fbdd536 JG |
62 | extern struct target_ops procfs_ops; /* Forward declaration */ |
63 | ||
35f5886e FF |
64 | #if 1 /* FIXME: Gross and ugly hack to resolve coredep.c global */ |
65 | CORE_ADDR kernel_u_addr; | |
66 | #endif | |
67 | ||
cc221e76 FF |
68 | #ifdef BROKEN_SIGINFO_H /* Workaround broken SGS <sys/siginfo.h> */ |
69 | #undef si_pid | |
70 | #define si_pid _data._proc.pid | |
71 | #undef si_uid | |
72 | #define si_uid _data._proc._pdata._kill.uid | |
73 | #endif /* BROKEN_SIGINFO_H */ | |
74 | ||
35f5886e FF |
75 | /* All access to the inferior, either one started by gdb or one that has |
76 | been attached to, is controlled by an instance of a procinfo structure, | |
77 | defined below. Since gdb currently only handles one inferior at a time, | |
a39ad5ce FF |
78 | the procinfo structure for the inferior is statically allocated and |
79 | only one exists at any given time. There is a separate procinfo | |
80 | structure for use by the "info proc" command, so that we can print | |
81 | useful information about any random process without interfering with | |
82 | the inferior's procinfo information. */ | |
35f5886e FF |
83 | |
84 | struct procinfo { | |
de43d7d0 | 85 | struct procinfo *next; |
35f5886e FF |
86 | int pid; /* Process ID of inferior */ |
87 | int fd; /* File descriptor for /proc entry */ | |
88 | char *pathname; /* Pathname to /proc entry */ | |
de43d7d0 | 89 | int had_event; /* poll/select says something happened */ |
35f5886e | 90 | int was_stopped; /* Nonzero if was stopped prior to attach */ |
d65eee73 | 91 | int nopass_next_sigstop; /* Don't pass a sigstop on next resume */ |
35f5886e FF |
92 | prrun_t prrun; /* Control state when it is run */ |
93 | prstatus_t prstatus; /* Current process status info */ | |
94 | gregset_t gregset; /* General register set */ | |
95 | fpregset_t fpregset; /* Floating point register set */ | |
96 | fltset_t fltset; /* Current traced hardware fault set */ | |
97 | sigset_t trace; /* Current traced signal set */ | |
98 | sysset_t exitset; /* Current traced system call exit set */ | |
99 | sysset_t entryset; /* Current traced system call entry set */ | |
cc221e76 FF |
100 | fltset_t saved_fltset; /* Saved traced hardware fault set */ |
101 | sigset_t saved_trace; /* Saved traced signal set */ | |
102 | sigset_t saved_sighold; /* Saved held signal set */ | |
103 | sysset_t saved_exitset; /* Saved traced system call exit set */ | |
104 | sysset_t saved_entryset; /* Saved traced system call entry set */ | |
a39ad5ce FF |
105 | }; |
106 | ||
de43d7d0 SG |
107 | /* List of inferior process information */ |
108 | static struct procinfo *procinfo_list = NULL; | |
109 | ||
110 | static struct pollfd *poll_list; /* pollfds used for waiting on /proc */ | |
111 | ||
112 | static int num_poll_list = 0; /* Number of entries in poll_list */ | |
113 | ||
114 | static int last_resume_pid = -1; /* Last pid used with procfs_resume */ | |
35f5886e | 115 | |
cc221e76 FF |
116 | /* Much of the information used in the /proc interface, particularly for |
117 | printing status information, is kept as tables of structures of the | |
118 | following form. These tables can be used to map numeric values to | |
119 | their symbolic names and to a string that describes their specific use. */ | |
120 | ||
121 | struct trans { | |
122 | int value; /* The numeric value */ | |
123 | char *name; /* The equivalent symbolic value */ | |
124 | char *desc; /* Short description of value */ | |
125 | }; | |
126 | ||
127 | /* Translate bits in the pr_flags member of the prstatus structure, into the | |
128 | names and desc information. */ | |
129 | ||
130 | static struct trans pr_flag_table[] = | |
131 | { | |
132 | #if defined (PR_STOPPED) | |
e3be225e | 133 | { PR_STOPPED, "PR_STOPPED", "Process is stopped" }, |
cc221e76 FF |
134 | #endif |
135 | #if defined (PR_ISTOP) | |
e3be225e | 136 | { PR_ISTOP, "PR_ISTOP", "Stopped on an event of interest" }, |
cc221e76 FF |
137 | #endif |
138 | #if defined (PR_DSTOP) | |
e3be225e | 139 | { PR_DSTOP, "PR_DSTOP", "A stop directive is in effect" }, |
cc221e76 FF |
140 | #endif |
141 | #if defined (PR_ASLEEP) | |
e3be225e | 142 | { PR_ASLEEP, "PR_ASLEEP", "Sleeping in an interruptible system call" }, |
cc221e76 FF |
143 | #endif |
144 | #if defined (PR_FORK) | |
e3be225e | 145 | { PR_FORK, "PR_FORK", "Inherit-on-fork is in effect" }, |
cc221e76 FF |
146 | #endif |
147 | #if defined (PR_RLC) | |
e3be225e | 148 | { PR_RLC, "PR_RLC", "Run-on-last-close is in effect" }, |
cc221e76 FF |
149 | #endif |
150 | #if defined (PR_PTRACE) | |
e3be225e | 151 | { PR_PTRACE, "PR_PTRACE", "Process is being controlled by ptrace" }, |
cc221e76 FF |
152 | #endif |
153 | #if defined (PR_PCINVAL) | |
e3be225e | 154 | { PR_PCINVAL, "PR_PCINVAL", "PC refers to an invalid virtual address" }, |
cc221e76 FF |
155 | #endif |
156 | #if defined (PR_ISSYS) | |
e3be225e | 157 | { PR_ISSYS, "PR_ISSYS", "Is a system process" }, |
5c1c5e67 FF |
158 | #endif |
159 | #if defined (PR_STEP) | |
e3be225e | 160 | { PR_STEP, "PR_STEP", "Process has single step pending" }, |
5c1c5e67 FF |
161 | #endif |
162 | #if defined (PR_KLC) | |
e3be225e | 163 | { PR_KLC, "PR_KLC", "Kill-on-last-close is in effect" }, |
5c1c5e67 FF |
164 | #endif |
165 | #if defined (PR_ASYNC) | |
e3be225e | 166 | { PR_ASYNC, "PR_ASYNC", "Asynchronous stop is in effect" }, |
5c1c5e67 FF |
167 | #endif |
168 | #if defined (PR_PCOMPAT) | |
e3be225e | 169 | { PR_PCOMPAT, "PR_PCOMPAT", "Ptrace compatibility mode in effect" }, |
cc221e76 | 170 | #endif |
e3be225e | 171 | { 0, NULL, NULL } |
cc221e76 FF |
172 | }; |
173 | ||
174 | /* Translate values in the pr_why field of the prstatus struct. */ | |
175 | ||
176 | static struct trans pr_why_table[] = | |
177 | { | |
178 | #if defined (PR_REQUESTED) | |
e3be225e | 179 | { PR_REQUESTED, "PR_REQUESTED", "Directed to stop via PIOCSTOP/PIOCWSTOP" }, |
cc221e76 FF |
180 | #endif |
181 | #if defined (PR_SIGNALLED) | |
e3be225e | 182 | { PR_SIGNALLED, "PR_SIGNALLED", "Receipt of a traced signal" }, |
cc221e76 FF |
183 | #endif |
184 | #if defined (PR_FAULTED) | |
e3be225e | 185 | { PR_FAULTED, "PR_FAULTED", "Incurred a traced hardware fault" }, |
cc221e76 FF |
186 | #endif |
187 | #if defined (PR_SYSENTRY) | |
e3be225e | 188 | { PR_SYSENTRY, "PR_SYSENTRY", "Entry to a traced system call" }, |
cc221e76 FF |
189 | #endif |
190 | #if defined (PR_SYSEXIT) | |
e3be225e | 191 | { PR_SYSEXIT, "PR_SYSEXIT", "Exit from a traced system call" }, |
cc221e76 FF |
192 | #endif |
193 | #if defined (PR_JOBCONTROL) | |
e3be225e | 194 | { PR_JOBCONTROL, "PR_JOBCONTROL", "Default job control stop signal action" }, |
5c1c5e67 FF |
195 | #endif |
196 | #if defined (PR_SUSPENDED) | |
e3be225e | 197 | { PR_SUSPENDED, "PR_SUSPENDED", "Process suspended" }, |
cc221e76 | 198 | #endif |
e3be225e | 199 | { 0, NULL, NULL } |
cc221e76 FF |
200 | }; |
201 | ||
202 | /* Hardware fault translation table. */ | |
203 | ||
204 | static struct trans faults_table[] = | |
205 | { | |
206 | #if defined (FLTILL) | |
e3be225e | 207 | { FLTILL, "FLTILL", "Illegal instruction" }, |
cc221e76 FF |
208 | #endif |
209 | #if defined (FLTPRIV) | |
e3be225e | 210 | { FLTPRIV, "FLTPRIV", "Privileged instruction" }, |
cc221e76 FF |
211 | #endif |
212 | #if defined (FLTBPT) | |
e3be225e | 213 | { FLTBPT, "FLTBPT", "Breakpoint trap" }, |
cc221e76 FF |
214 | #endif |
215 | #if defined (FLTTRACE) | |
e3be225e | 216 | { FLTTRACE, "FLTTRACE", "Trace trap" }, |
cc221e76 FF |
217 | #endif |
218 | #if defined (FLTACCESS) | |
e3be225e | 219 | { FLTACCESS, "FLTACCESS", "Memory access fault" }, |
cc221e76 FF |
220 | #endif |
221 | #if defined (FLTBOUNDS) | |
e3be225e | 222 | { FLTBOUNDS, "FLTBOUNDS", "Memory bounds violation" }, |
cc221e76 FF |
223 | #endif |
224 | #if defined (FLTIOVF) | |
e3be225e | 225 | { FLTIOVF, "FLTIOVF", "Integer overflow" }, |
cc221e76 FF |
226 | #endif |
227 | #if defined (FLTIZDIV) | |
e3be225e | 228 | { FLTIZDIV, "FLTIZDIV", "Integer zero divide" }, |
cc221e76 FF |
229 | #endif |
230 | #if defined (FLTFPE) | |
e3be225e | 231 | { FLTFPE, "FLTFPE", "Floating-point exception" }, |
cc221e76 FF |
232 | #endif |
233 | #if defined (FLTSTACK) | |
e3be225e | 234 | { FLTSTACK, "FLTSTACK", "Unrecoverable stack fault" }, |
cc221e76 FF |
235 | #endif |
236 | #if defined (FLTPAGE) | |
e3be225e | 237 | { FLTPAGE, "FLTPAGE", "Recoverable page fault" }, |
cc221e76 | 238 | #endif |
e3be225e | 239 | { 0, NULL, NULL } |
cc221e76 FF |
240 | }; |
241 | ||
242 | /* Translation table for signal generation information. See UNIX System | |
243 | V Release 4 Programmer's Reference Manual, siginfo(5). */ | |
244 | ||
245 | static struct sigcode { | |
246 | int signo; | |
247 | int code; | |
248 | char *codename; | |
249 | char *desc; | |
250 | } siginfo_table[] = { | |
251 | #if defined (SIGILL) && defined (ILL_ILLOPC) | |
e3be225e | 252 | { SIGILL, ILL_ILLOPC, "ILL_ILLOPC", "Illegal opcode" }, |
cc221e76 FF |
253 | #endif |
254 | #if defined (SIGILL) && defined (ILL_ILLOPN) | |
e3be225e | 255 | { SIGILL, ILL_ILLOPN, "ILL_ILLOPN", "Illegal operand", }, |
cc221e76 FF |
256 | #endif |
257 | #if defined (SIGILL) && defined (ILL_ILLADR) | |
e3be225e | 258 | { SIGILL, ILL_ILLADR, "ILL_ILLADR", "Illegal addressing mode" }, |
cc221e76 FF |
259 | #endif |
260 | #if defined (SIGILL) && defined (ILL_ILLTRP) | |
e3be225e | 261 | { SIGILL, ILL_ILLTRP, "ILL_ILLTRP", "Illegal trap" }, |
cc221e76 FF |
262 | #endif |
263 | #if defined (SIGILL) && defined (ILL_PRVOPC) | |
e3be225e | 264 | { SIGILL, ILL_PRVOPC, "ILL_PRVOPC", "Privileged opcode" }, |
cc221e76 FF |
265 | #endif |
266 | #if defined (SIGILL) && defined (ILL_PRVREG) | |
e3be225e | 267 | { SIGILL, ILL_PRVREG, "ILL_PRVREG", "Privileged register" }, |
cc221e76 FF |
268 | #endif |
269 | #if defined (SIGILL) && defined (ILL_COPROC) | |
e3be225e | 270 | { SIGILL, ILL_COPROC, "ILL_COPROC", "Coprocessor error" }, |
cc221e76 FF |
271 | #endif |
272 | #if defined (SIGILL) && defined (ILL_BADSTK) | |
e3be225e | 273 | { SIGILL, ILL_BADSTK, "ILL_BADSTK", "Internal stack error" }, |
cc221e76 FF |
274 | #endif |
275 | #if defined (SIGFPE) && defined (FPE_INTDIV) | |
e3be225e | 276 | { SIGFPE, FPE_INTDIV, "FPE_INTDIV", "Integer divide by zero" }, |
cc221e76 FF |
277 | #endif |
278 | #if defined (SIGFPE) && defined (FPE_INTOVF) | |
e3be225e | 279 | { SIGFPE, FPE_INTOVF, "FPE_INTOVF", "Integer overflow" }, |
cc221e76 FF |
280 | #endif |
281 | #if defined (SIGFPE) && defined (FPE_FLTDIV) | |
e3be225e | 282 | { SIGFPE, FPE_FLTDIV, "FPE_FLTDIV", "Floating point divide by zero" }, |
cc221e76 FF |
283 | #endif |
284 | #if defined (SIGFPE) && defined (FPE_FLTOVF) | |
e3be225e | 285 | { SIGFPE, FPE_FLTOVF, "FPE_FLTOVF", "Floating point overflow" }, |
cc221e76 FF |
286 | #endif |
287 | #if defined (SIGFPE) && defined (FPE_FLTUND) | |
e3be225e | 288 | { SIGFPE, FPE_FLTUND, "FPE_FLTUND", "Floating point underflow" }, |
cc221e76 FF |
289 | #endif |
290 | #if defined (SIGFPE) && defined (FPE_FLTRES) | |
e3be225e | 291 | { SIGFPE, FPE_FLTRES, "FPE_FLTRES", "Floating point inexact result" }, |
cc221e76 FF |
292 | #endif |
293 | #if defined (SIGFPE) && defined (FPE_FLTINV) | |
e3be225e | 294 | { SIGFPE, FPE_FLTINV, "FPE_FLTINV", "Invalid floating point operation" }, |
cc221e76 FF |
295 | #endif |
296 | #if defined (SIGFPE) && defined (FPE_FLTSUB) | |
e3be225e | 297 | { SIGFPE, FPE_FLTSUB, "FPE_FLTSUB", "Subscript out of range" }, |
cc221e76 FF |
298 | #endif |
299 | #if defined (SIGSEGV) && defined (SEGV_MAPERR) | |
e3be225e | 300 | { SIGSEGV, SEGV_MAPERR, "SEGV_MAPERR", "Address not mapped to object" }, |
cc221e76 FF |
301 | #endif |
302 | #if defined (SIGSEGV) && defined (SEGV_ACCERR) | |
e3be225e | 303 | { SIGSEGV, SEGV_ACCERR, "SEGV_ACCERR", "Invalid permissions for object" }, |
cc221e76 FF |
304 | #endif |
305 | #if defined (SIGBUS) && defined (BUS_ADRALN) | |
e3be225e | 306 | { SIGBUS, BUS_ADRALN, "BUS_ADRALN", "Invalid address alignment" }, |
cc221e76 FF |
307 | #endif |
308 | #if defined (SIGBUS) && defined (BUS_ADRERR) | |
e3be225e | 309 | { SIGBUS, BUS_ADRERR, "BUS_ADRERR", "Non-existent physical address" }, |
cc221e76 FF |
310 | #endif |
311 | #if defined (SIGBUS) && defined (BUS_OBJERR) | |
e3be225e | 312 | { SIGBUS, BUS_OBJERR, "BUS_OBJERR", "Object specific hardware error" }, |
cc221e76 FF |
313 | #endif |
314 | #if defined (SIGTRAP) && defined (TRAP_BRKPT) | |
e3be225e | 315 | { SIGTRAP, TRAP_BRKPT, "TRAP_BRKPT", "Process breakpoint" }, |
cc221e76 FF |
316 | #endif |
317 | #if defined (SIGTRAP) && defined (TRAP_TRACE) | |
e3be225e | 318 | { SIGTRAP, TRAP_TRACE, "TRAP_TRACE", "Process trace trap" }, |
cc221e76 FF |
319 | #endif |
320 | #if defined (SIGCLD) && defined (CLD_EXITED) | |
e3be225e | 321 | { SIGCLD, CLD_EXITED, "CLD_EXITED", "Child has exited" }, |
cc221e76 FF |
322 | #endif |
323 | #if defined (SIGCLD) && defined (CLD_KILLED) | |
e3be225e | 324 | { SIGCLD, CLD_KILLED, "CLD_KILLED", "Child was killed" }, |
cc221e76 FF |
325 | #endif |
326 | #if defined (SIGCLD) && defined (CLD_DUMPED) | |
e3be225e | 327 | { SIGCLD, CLD_DUMPED, "CLD_DUMPED", "Child has terminated abnormally" }, |
cc221e76 FF |
328 | #endif |
329 | #if defined (SIGCLD) && defined (CLD_TRAPPED) | |
e3be225e | 330 | { SIGCLD, CLD_TRAPPED, "CLD_TRAPPED", "Traced child has trapped" }, |
cc221e76 FF |
331 | #endif |
332 | #if defined (SIGCLD) && defined (CLD_STOPPED) | |
e3be225e | 333 | { SIGCLD, CLD_STOPPED, "CLD_STOPPED", "Child has stopped" }, |
cc221e76 FF |
334 | #endif |
335 | #if defined (SIGCLD) && defined (CLD_CONTINUED) | |
e3be225e | 336 | { SIGCLD, CLD_CONTINUED, "CLD_CONTINUED", "Stopped child had continued" }, |
cc221e76 FF |
337 | #endif |
338 | #if defined (SIGPOLL) && defined (POLL_IN) | |
e3be225e | 339 | { SIGPOLL, POLL_IN, "POLL_IN", "Input input available" }, |
cc221e76 FF |
340 | #endif |
341 | #if defined (SIGPOLL) && defined (POLL_OUT) | |
e3be225e | 342 | { SIGPOLL, POLL_OUT, "POLL_OUT", "Output buffers available" }, |
cc221e76 FF |
343 | #endif |
344 | #if defined (SIGPOLL) && defined (POLL_MSG) | |
e3be225e | 345 | { SIGPOLL, POLL_MSG, "POLL_MSG", "Input message available" }, |
cc221e76 FF |
346 | #endif |
347 | #if defined (SIGPOLL) && defined (POLL_ERR) | |
e3be225e | 348 | { SIGPOLL, POLL_ERR, "POLL_ERR", "I/O error" }, |
cc221e76 FF |
349 | #endif |
350 | #if defined (SIGPOLL) && defined (POLL_PRI) | |
e3be225e | 351 | { SIGPOLL, POLL_PRI, "POLL_PRI", "High priority input available" }, |
cc221e76 FF |
352 | #endif |
353 | #if defined (SIGPOLL) && defined (POLL_HUP) | |
e3be225e | 354 | { SIGPOLL, POLL_HUP, "POLL_HUP", "Device disconnected" }, |
cc221e76 | 355 | #endif |
e3be225e | 356 | { 0, 0, NULL, NULL } |
cc221e76 FF |
357 | }; |
358 | ||
cc221e76 FF |
359 | static char *syscall_table[MAX_SYSCALLS]; |
360 | ||
1ab3bf1b JG |
361 | /* Prototypes for local functions */ |
362 | ||
e3be225e | 363 | static void set_proc_siginfo PARAMS ((struct procinfo *, int)); |
6b801388 | 364 | |
e3be225e | 365 | static void init_syscall_table PARAMS ((void)); |
cc221e76 | 366 | |
e3be225e | 367 | static char *syscallname PARAMS ((int)); |
cc221e76 | 368 | |
e3be225e | 369 | static char *signalname PARAMS ((int)); |
cc221e76 | 370 | |
e3be225e | 371 | static char *errnoname PARAMS ((int)); |
4ace50a5 | 372 | |
e3be225e | 373 | static int proc_address_to_fd PARAMS ((struct procinfo *, CORE_ADDR, int)); |
1ab3bf1b | 374 | |
e3be225e | 375 | static int open_proc_file PARAMS ((int, struct procinfo *, int)); |
1ab3bf1b | 376 | |
e3be225e | 377 | static void close_proc_file PARAMS ((struct procinfo *)); |
1ab3bf1b | 378 | |
e3be225e | 379 | static void unconditionally_kill_inferior PARAMS ((struct procinfo *)); |
1ab3bf1b | 380 | |
e3be225e | 381 | static NORETURN void proc_init_failed PARAMS ((struct procinfo *, char *)) ATTR_NORETURN; |
1ab3bf1b | 382 | |
e3be225e | 383 | static void info_proc PARAMS ((char *, int)); |
cc221e76 | 384 | |
e3be225e | 385 | static void info_proc_flags PARAMS ((struct procinfo *, int)); |
cc221e76 | 386 | |
e3be225e | 387 | static void info_proc_stop PARAMS ((struct procinfo *, int)); |
1ab3bf1b | 388 | |
e3be225e | 389 | static void info_proc_siginfo PARAMS ((struct procinfo *, int)); |
cc221e76 | 390 | |
e3be225e | 391 | static void info_proc_syscalls PARAMS ((struct procinfo *, int)); |
cc221e76 | 392 | |
e3be225e | 393 | static void info_proc_mappings PARAMS ((struct procinfo *, int)); |
cc221e76 | 394 | |
e3be225e | 395 | static void info_proc_signals PARAMS ((struct procinfo *, int)); |
cc221e76 | 396 | |
e3be225e | 397 | static void info_proc_faults PARAMS ((struct procinfo *, int)); |
1ab3bf1b | 398 | |
e3be225e | 399 | static char *mappingflags PARAMS ((long)); |
1ab3bf1b | 400 | |
e3be225e | 401 | static char *lookupname PARAMS ((struct trans *, unsigned int, char *)); |
cc221e76 | 402 | |
e3be225e | 403 | static char *lookupdesc PARAMS ((struct trans *, unsigned int)); |
cc221e76 | 404 | |
e3be225e | 405 | static int do_attach PARAMS ((int pid)); |
3fbdd536 | 406 | |
e3be225e | 407 | static void do_detach PARAMS ((int siggnal)); |
3fbdd536 | 408 | |
e3be225e | 409 | static void procfs_create_inferior PARAMS ((char *, char *, char **)); |
3fbdd536 | 410 | |
e3be225e | 411 | static void procfs_notice_signals PARAMS ((int pid)); |
de43d7d0 | 412 | |
e3be225e | 413 | static struct procinfo *find_procinfo PARAMS ((pid_t pid, int okfail)); |
3950a34e | 414 | |
1ab3bf1b JG |
415 | /* External function prototypes that can't be easily included in any |
416 | header file because the args are typedefs in system include files. */ | |
417 | ||
e3be225e | 418 | extern void supply_gregset PARAMS ((gregset_t *)); |
1ab3bf1b | 419 | |
e3be225e | 420 | extern void fill_gregset PARAMS ((gregset_t *, int)); |
1ab3bf1b | 421 | |
e3be225e | 422 | extern void supply_fpregset PARAMS ((fpregset_t *)); |
1ab3bf1b | 423 | |
e3be225e | 424 | extern void fill_fpregset PARAMS ((fpregset_t *, int)); |
35f5886e | 425 | |
cc221e76 FF |
426 | /* |
427 | ||
de43d7d0 SG |
428 | LOCAL FUNCTION |
429 | ||
430 | find_procinfo -- convert a process id to a struct procinfo | |
431 | ||
432 | SYNOPSIS | |
433 | ||
434 | static struct procinfo * find_procinfo (pid_t pid, int okfail); | |
435 | ||
436 | DESCRIPTION | |
437 | ||
438 | Given a process id, look it up in the procinfo chain. Returns | |
439 | a struct procinfo *. If can't find pid, then call error(), | |
440 | unless okfail is set, in which case, return NULL; | |
441 | */ | |
442 | ||
443 | static struct procinfo * | |
444 | find_procinfo (pid, okfail) | |
445 | pid_t pid; | |
446 | int okfail; | |
447 | { | |
448 | struct procinfo *procinfo; | |
449 | ||
450 | for (procinfo = procinfo_list; procinfo; procinfo = procinfo->next) | |
451 | if (procinfo->pid == pid) | |
452 | return procinfo; | |
453 | ||
454 | if (okfail) | |
455 | return NULL; | |
456 | ||
457 | error ("procfs (find_procinfo): Couldn't locate pid %d", pid); | |
458 | } | |
459 | ||
460 | /* | |
461 | ||
7c5d526e SG |
462 | LOCAL MACRO |
463 | ||
464 | current_procinfo -- convert inferior_pid to a struct procinfo | |
465 | ||
466 | SYNOPSIS | |
467 | ||
468 | static struct procinfo * current_procinfo; | |
469 | ||
470 | DESCRIPTION | |
471 | ||
472 | Looks up inferior_pid in the procinfo chain. Always returns a | |
473 | struct procinfo *. If process can't be found, we error() out. | |
474 | */ | |
475 | ||
476 | #define current_procinfo find_procinfo (inferior_pid, 0) | |
477 | ||
478 | /* | |
479 | ||
de43d7d0 SG |
480 | LOCAL FUNCTION |
481 | ||
482 | add_fd -- Add the fd to the poll/select list | |
483 | ||
484 | SYNOPSIS | |
485 | ||
486 | static void add_fd (struct procinfo *); | |
487 | ||
488 | DESCRIPTION | |
489 | ||
490 | Add the fd of the supplied procinfo to the list of fds used for | |
491 | poll/select operations. | |
492 | */ | |
493 | ||
494 | static void | |
495 | add_fd (pi) | |
496 | struct procinfo *pi; | |
497 | { | |
498 | if (num_poll_list <= 0) | |
499 | poll_list = (struct pollfd *) xmalloc (sizeof (struct pollfd)); | |
500 | else | |
501 | poll_list = (struct pollfd *) xrealloc (poll_list, | |
502 | (num_poll_list + 1) | |
503 | * sizeof (struct pollfd)); | |
504 | poll_list[num_poll_list].fd = pi->fd; | |
505 | poll_list[num_poll_list].events = POLLPRI; | |
506 | ||
507 | num_poll_list++; | |
508 | } | |
509 | ||
510 | static void | |
511 | remove_fd (pi) | |
512 | struct procinfo *pi; | |
513 | { | |
514 | int i; | |
515 | ||
516 | for (i = 0; i < num_poll_list; i++) | |
517 | { | |
518 | if (poll_list[i].fd == pi->fd) | |
519 | { | |
520 | if (i != num_poll_list - 1) | |
521 | memcpy (poll_list, poll_list + i + 1, | |
522 | (num_poll_list - i - 1) * sizeof (struct pollfd)); | |
523 | ||
524 | num_poll_list--; | |
525 | ||
526 | if (num_poll_list == 0) | |
527 | free (poll_list); | |
528 | else | |
529 | poll_list = (struct pollfd *) xrealloc (poll_list, | |
530 | num_poll_list | |
531 | * sizeof (struct pollfd)); | |
532 | return; | |
533 | } | |
534 | } | |
535 | } | |
536 | ||
7c5d526e | 537 | #define LOSING_POLL unixware_sux |
de43d7d0 | 538 | |
7c5d526e SG |
539 | static struct procinfo * |
540 | wait_fd () | |
541 | { | |
542 | struct procinfo *pi; | |
543 | int num_fds; | |
544 | int i; | |
de43d7d0 | 545 | |
1e75b5f5 | 546 | set_sigint_trap (); /* Causes SIGINT to be passed on to the |
7c5d526e | 547 | attached process. */ |
429f1c9f | 548 | set_sigio_trap (); |
de43d7d0 | 549 | |
7c5d526e SG |
550 | #ifndef LOSING_POLL |
551 | num_fds = poll (poll_list, num_poll_list, -1); | |
552 | #else | |
553 | pi = current_procinfo; | |
de43d7d0 | 554 | |
8afd05c0 | 555 | while (ioctl (pi->fd, PIOCWSTOP, &pi->prstatus) < 0) |
7c5d526e | 556 | { |
cef0333e PS |
557 | if (errno == ENOENT) |
558 | { | |
559 | /* Process exited. */ | |
560 | pi->prstatus.pr_flags = 0; | |
561 | break; | |
562 | } | |
563 | else if (errno != EINTR) | |
8afd05c0 JK |
564 | { |
565 | print_sys_errmsg (pi->pathname, errno); | |
566 | error ("PIOCWSTOP failed"); | |
567 | } | |
7c5d526e | 568 | } |
fb63d460 | 569 | pi->had_event = 1; |
7c5d526e SG |
570 | #endif |
571 | ||
1e75b5f5 | 572 | clear_sigint_trap (); |
429f1c9f | 573 | clear_sigio_trap (); |
de43d7d0 | 574 | |
7c5d526e | 575 | #ifndef LOSING_POLL |
de43d7d0 | 576 | |
7c5d526e SG |
577 | if (num_fds <= 0) |
578 | { | |
579 | print_sys_errmsg ("poll failed\n", errno); | |
580 | error ("Poll failed, returned %d", num_fds); | |
581 | } | |
582 | ||
583 | for (i = 0; i < num_poll_list && num_fds > 0; i++) | |
584 | { | |
585 | if ((poll_list[i].revents & (POLLPRI|POLLERR|POLLHUP|POLLNVAL)) == 0) | |
586 | continue; | |
587 | for (pi = procinfo_list; pi; pi = pi->next) | |
588 | { | |
589 | if (poll_list[i].fd == pi->fd) | |
590 | { | |
591 | if (ioctl (pi->fd, PIOCSTATUS, &pi->prstatus) < 0) | |
592 | { | |
593 | print_sys_errmsg (pi->pathname, errno); | |
594 | error ("PIOCSTATUS failed"); | |
595 | } | |
596 | num_fds--; | |
597 | pi->had_event = 1; | |
598 | break; | |
599 | } | |
600 | } | |
601 | if (!pi) | |
602 | error ("procfs_wait: Couldn't find procinfo for fd %d\n", | |
603 | poll_list[i].fd); | |
604 | } | |
605 | #endif /* LOSING_POLL */ | |
606 | ||
607 | return pi; | |
608 | } | |
de43d7d0 SG |
609 | |
610 | /* | |
611 | ||
cc221e76 FF |
612 | LOCAL FUNCTION |
613 | ||
614 | lookupdesc -- translate a value to a summary desc string | |
615 | ||
616 | SYNOPSIS | |
617 | ||
618 | static char *lookupdesc (struct trans *transp, unsigned int val); | |
619 | ||
620 | DESCRIPTION | |
621 | ||
622 | Given a pointer to a translation table and a value to be translated, | |
623 | lookup the desc string and return it. | |
624 | */ | |
625 | ||
626 | static char * | |
627 | lookupdesc (transp, val) | |
628 | struct trans *transp; | |
629 | unsigned int val; | |
630 | { | |
631 | char *desc; | |
632 | ||
633 | for (desc = NULL; transp -> name != NULL; transp++) | |
634 | { | |
635 | if (transp -> value == val) | |
636 | { | |
637 | desc = transp -> desc; | |
638 | break; | |
639 | } | |
640 | } | |
641 | ||
642 | /* Didn't find a translation for the specified value, set a default one. */ | |
643 | ||
644 | if (desc == NULL) | |
645 | { | |
646 | desc = "Unknown"; | |
647 | } | |
648 | return (desc); | |
649 | } | |
650 | ||
651 | /* | |
652 | ||
653 | LOCAL FUNCTION | |
654 | ||
655 | lookupname -- translate a value to symbolic name | |
656 | ||
657 | SYNOPSIS | |
658 | ||
659 | static char *lookupname (struct trans *transp, unsigned int val, | |
660 | char *prefix); | |
661 | ||
662 | DESCRIPTION | |
663 | ||
664 | Given a pointer to a translation table, a value to be translated, | |
665 | and a default prefix to return if the value can't be translated, | |
666 | match the value with one of the translation table entries and | |
667 | return a pointer to the symbolic name. | |
668 | ||
669 | If no match is found it just returns the value as a printable string, | |
670 | with the given prefix. The previous such value, if any, is freed | |
671 | at this time. | |
672 | */ | |
673 | ||
674 | static char * | |
675 | lookupname (transp, val, prefix) | |
676 | struct trans *transp; | |
677 | unsigned int val; | |
678 | char *prefix; | |
679 | { | |
680 | static char *locbuf; | |
681 | char *name; | |
682 | ||
683 | for (name = NULL; transp -> name != NULL; transp++) | |
684 | { | |
685 | if (transp -> value == val) | |
686 | { | |
687 | name = transp -> name; | |
688 | break; | |
689 | } | |
690 | } | |
691 | ||
692 | /* Didn't find a translation for the specified value, build a default | |
693 | one using the specified prefix and return it. The lifetime of | |
694 | the value is only until the next one is needed. */ | |
695 | ||
696 | if (name == NULL) | |
697 | { | |
698 | if (locbuf != NULL) | |
699 | { | |
700 | free (locbuf); | |
701 | } | |
702 | locbuf = xmalloc (strlen (prefix) + 16); | |
4ed3a9ea | 703 | sprintf (locbuf, "%s %u", prefix, val); |
cc221e76 FF |
704 | name = locbuf; |
705 | } | |
706 | return (name); | |
707 | } | |
708 | ||
709 | static char * | |
710 | sigcodename (sip) | |
711 | siginfo_t *sip; | |
712 | { | |
713 | struct sigcode *scp; | |
714 | char *name = NULL; | |
715 | static char locbuf[32]; | |
716 | ||
717 | for (scp = siginfo_table; scp -> codename != NULL; scp++) | |
718 | { | |
719 | if ((scp -> signo == sip -> si_signo) && | |
720 | (scp -> code == sip -> si_code)) | |
721 | { | |
722 | name = scp -> codename; | |
723 | break; | |
724 | } | |
725 | } | |
726 | if (name == NULL) | |
727 | { | |
4ed3a9ea | 728 | sprintf (locbuf, "sigcode %u", sip -> si_signo); |
cc221e76 FF |
729 | name = locbuf; |
730 | } | |
731 | return (name); | |
732 | } | |
733 | ||
3fbdd536 JG |
734 | static char * |
735 | sigcodedesc (sip) | |
cc221e76 FF |
736 | siginfo_t *sip; |
737 | { | |
738 | struct sigcode *scp; | |
739 | char *desc = NULL; | |
740 | ||
741 | for (scp = siginfo_table; scp -> codename != NULL; scp++) | |
742 | { | |
743 | if ((scp -> signo == sip -> si_signo) && | |
744 | (scp -> code == sip -> si_code)) | |
745 | { | |
746 | desc = scp -> desc; | |
747 | break; | |
748 | } | |
749 | } | |
750 | if (desc == NULL) | |
751 | { | |
752 | desc = "Unrecognized signal or trap use"; | |
753 | } | |
754 | return (desc); | |
755 | } | |
756 | ||
757 | /* | |
758 | ||
759 | LOCAL FUNCTION | |
760 | ||
761 | syscallname - translate a system call number into a system call name | |
762 | ||
763 | SYNOPSIS | |
764 | ||
765 | char *syscallname (int syscallnum) | |
766 | ||
767 | DESCRIPTION | |
768 | ||
769 | Given a system call number, translate it into the printable name | |
770 | of a system call, or into "syscall <num>" if it is an unknown | |
771 | number. | |
772 | */ | |
773 | ||
774 | static char * | |
775 | syscallname (syscallnum) | |
776 | int syscallnum; | |
777 | { | |
778 | static char locbuf[32]; | |
779 | char *rtnval; | |
780 | ||
781 | if (syscallnum >= 0 && syscallnum < MAX_SYSCALLS) | |
782 | { | |
783 | rtnval = syscall_table[syscallnum]; | |
784 | } | |
785 | else | |
786 | { | |
4ed3a9ea | 787 | sprintf (locbuf, "syscall %u", syscallnum); |
cc221e76 FF |
788 | rtnval = locbuf; |
789 | } | |
790 | return (rtnval); | |
791 | } | |
792 | ||
793 | /* | |
794 | ||
795 | LOCAL FUNCTION | |
796 | ||
797 | init_syscall_table - initialize syscall translation table | |
798 | ||
799 | SYNOPSIS | |
800 | ||
801 | void init_syscall_table (void) | |
802 | ||
803 | DESCRIPTION | |
804 | ||
805 | Dynamically initialize the translation table to convert system | |
806 | call numbers into printable system call names. Done once per | |
807 | gdb run, on initialization. | |
808 | ||
809 | NOTES | |
810 | ||
811 | This is awfully ugly, but preprocessor tricks to make it prettier | |
812 | tend to be nonportable. | |
813 | */ | |
814 | ||
815 | static void | |
816 | init_syscall_table () | |
817 | { | |
cc221e76 FF |
818 | #if defined (SYS_exit) |
819 | syscall_table[SYS_exit] = "exit"; | |
820 | #endif | |
821 | #if defined (SYS_fork) | |
822 | syscall_table[SYS_fork] = "fork"; | |
823 | #endif | |
824 | #if defined (SYS_read) | |
825 | syscall_table[SYS_read] = "read"; | |
826 | #endif | |
827 | #if defined (SYS_write) | |
828 | syscall_table[SYS_write] = "write"; | |
829 | #endif | |
830 | #if defined (SYS_open) | |
831 | syscall_table[SYS_open] = "open"; | |
832 | #endif | |
833 | #if defined (SYS_close) | |
834 | syscall_table[SYS_close] = "close"; | |
835 | #endif | |
836 | #if defined (SYS_wait) | |
837 | syscall_table[SYS_wait] = "wait"; | |
838 | #endif | |
839 | #if defined (SYS_creat) | |
840 | syscall_table[SYS_creat] = "creat"; | |
841 | #endif | |
842 | #if defined (SYS_link) | |
843 | syscall_table[SYS_link] = "link"; | |
844 | #endif | |
845 | #if defined (SYS_unlink) | |
846 | syscall_table[SYS_unlink] = "unlink"; | |
847 | #endif | |
848 | #if defined (SYS_exec) | |
849 | syscall_table[SYS_exec] = "exec"; | |
850 | #endif | |
851 | #if defined (SYS_execv) | |
852 | syscall_table[SYS_execv] = "execv"; | |
853 | #endif | |
854 | #if defined (SYS_execve) | |
855 | syscall_table[SYS_execve] = "execve"; | |
856 | #endif | |
857 | #if defined (SYS_chdir) | |
858 | syscall_table[SYS_chdir] = "chdir"; | |
859 | #endif | |
860 | #if defined (SYS_time) | |
861 | syscall_table[SYS_time] = "time"; | |
862 | #endif | |
863 | #if defined (SYS_mknod) | |
864 | syscall_table[SYS_mknod] = "mknod"; | |
865 | #endif | |
866 | #if defined (SYS_chmod) | |
867 | syscall_table[SYS_chmod] = "chmod"; | |
868 | #endif | |
869 | #if defined (SYS_chown) | |
870 | syscall_table[SYS_chown] = "chown"; | |
871 | #endif | |
872 | #if defined (SYS_brk) | |
873 | syscall_table[SYS_brk] = "brk"; | |
874 | #endif | |
875 | #if defined (SYS_stat) | |
876 | syscall_table[SYS_stat] = "stat"; | |
877 | #endif | |
878 | #if defined (SYS_lseek) | |
879 | syscall_table[SYS_lseek] = "lseek"; | |
880 | #endif | |
881 | #if defined (SYS_getpid) | |
882 | syscall_table[SYS_getpid] = "getpid"; | |
883 | #endif | |
884 | #if defined (SYS_mount) | |
885 | syscall_table[SYS_mount] = "mount"; | |
886 | #endif | |
887 | #if defined (SYS_umount) | |
888 | syscall_table[SYS_umount] = "umount"; | |
889 | #endif | |
890 | #if defined (SYS_setuid) | |
891 | syscall_table[SYS_setuid] = "setuid"; | |
892 | #endif | |
893 | #if defined (SYS_getuid) | |
894 | syscall_table[SYS_getuid] = "getuid"; | |
895 | #endif | |
896 | #if defined (SYS_stime) | |
897 | syscall_table[SYS_stime] = "stime"; | |
898 | #endif | |
899 | #if defined (SYS_ptrace) | |
900 | syscall_table[SYS_ptrace] = "ptrace"; | |
901 | #endif | |
902 | #if defined (SYS_alarm) | |
903 | syscall_table[SYS_alarm] = "alarm"; | |
904 | #endif | |
905 | #if defined (SYS_fstat) | |
906 | syscall_table[SYS_fstat] = "fstat"; | |
907 | #endif | |
908 | #if defined (SYS_pause) | |
909 | syscall_table[SYS_pause] = "pause"; | |
910 | #endif | |
911 | #if defined (SYS_utime) | |
912 | syscall_table[SYS_utime] = "utime"; | |
913 | #endif | |
914 | #if defined (SYS_stty) | |
915 | syscall_table[SYS_stty] = "stty"; | |
916 | #endif | |
917 | #if defined (SYS_gtty) | |
918 | syscall_table[SYS_gtty] = "gtty"; | |
919 | #endif | |
920 | #if defined (SYS_access) | |
921 | syscall_table[SYS_access] = "access"; | |
922 | #endif | |
923 | #if defined (SYS_nice) | |
924 | syscall_table[SYS_nice] = "nice"; | |
925 | #endif | |
926 | #if defined (SYS_statfs) | |
927 | syscall_table[SYS_statfs] = "statfs"; | |
928 | #endif | |
929 | #if defined (SYS_sync) | |
930 | syscall_table[SYS_sync] = "sync"; | |
931 | #endif | |
932 | #if defined (SYS_kill) | |
933 | syscall_table[SYS_kill] = "kill"; | |
934 | #endif | |
935 | #if defined (SYS_fstatfs) | |
936 | syscall_table[SYS_fstatfs] = "fstatfs"; | |
937 | #endif | |
938 | #if defined (SYS_pgrpsys) | |
939 | syscall_table[SYS_pgrpsys] = "pgrpsys"; | |
940 | #endif | |
941 | #if defined (SYS_xenix) | |
942 | syscall_table[SYS_xenix] = "xenix"; | |
943 | #endif | |
944 | #if defined (SYS_dup) | |
945 | syscall_table[SYS_dup] = "dup"; | |
946 | #endif | |
947 | #if defined (SYS_pipe) | |
948 | syscall_table[SYS_pipe] = "pipe"; | |
949 | #endif | |
950 | #if defined (SYS_times) | |
951 | syscall_table[SYS_times] = "times"; | |
952 | #endif | |
953 | #if defined (SYS_profil) | |
954 | syscall_table[SYS_profil] = "profil"; | |
955 | #endif | |
956 | #if defined (SYS_plock) | |
957 | syscall_table[SYS_plock] = "plock"; | |
958 | #endif | |
959 | #if defined (SYS_setgid) | |
960 | syscall_table[SYS_setgid] = "setgid"; | |
961 | #endif | |
962 | #if defined (SYS_getgid) | |
963 | syscall_table[SYS_getgid] = "getgid"; | |
964 | #endif | |
965 | #if defined (SYS_signal) | |
966 | syscall_table[SYS_signal] = "signal"; | |
967 | #endif | |
968 | #if defined (SYS_msgsys) | |
969 | syscall_table[SYS_msgsys] = "msgsys"; | |
970 | #endif | |
971 | #if defined (SYS_sys3b) | |
972 | syscall_table[SYS_sys3b] = "sys3b"; | |
973 | #endif | |
974 | #if defined (SYS_acct) | |
975 | syscall_table[SYS_acct] = "acct"; | |
976 | #endif | |
977 | #if defined (SYS_shmsys) | |
978 | syscall_table[SYS_shmsys] = "shmsys"; | |
979 | #endif | |
980 | #if defined (SYS_semsys) | |
981 | syscall_table[SYS_semsys] = "semsys"; | |
982 | #endif | |
983 | #if defined (SYS_ioctl) | |
984 | syscall_table[SYS_ioctl] = "ioctl"; | |
985 | #endif | |
986 | #if defined (SYS_uadmin) | |
987 | syscall_table[SYS_uadmin] = "uadmin"; | |
988 | #endif | |
989 | #if defined (SYS_utssys) | |
990 | syscall_table[SYS_utssys] = "utssys"; | |
991 | #endif | |
992 | #if defined (SYS_fsync) | |
993 | syscall_table[SYS_fsync] = "fsync"; | |
994 | #endif | |
995 | #if defined (SYS_umask) | |
996 | syscall_table[SYS_umask] = "umask"; | |
997 | #endif | |
998 | #if defined (SYS_chroot) | |
999 | syscall_table[SYS_chroot] = "chroot"; | |
1000 | #endif | |
1001 | #if defined (SYS_fcntl) | |
1002 | syscall_table[SYS_fcntl] = "fcntl"; | |
1003 | #endif | |
1004 | #if defined (SYS_ulimit) | |
1005 | syscall_table[SYS_ulimit] = "ulimit"; | |
1006 | #endif | |
1007 | #if defined (SYS_rfsys) | |
1008 | syscall_table[SYS_rfsys] = "rfsys"; | |
1009 | #endif | |
1010 | #if defined (SYS_rmdir) | |
1011 | syscall_table[SYS_rmdir] = "rmdir"; | |
1012 | #endif | |
1013 | #if defined (SYS_mkdir) | |
1014 | syscall_table[SYS_mkdir] = "mkdir"; | |
1015 | #endif | |
1016 | #if defined (SYS_getdents) | |
1017 | syscall_table[SYS_getdents] = "getdents"; | |
1018 | #endif | |
1019 | #if defined (SYS_sysfs) | |
1020 | syscall_table[SYS_sysfs] = "sysfs"; | |
1021 | #endif | |
1022 | #if defined (SYS_getmsg) | |
1023 | syscall_table[SYS_getmsg] = "getmsg"; | |
1024 | #endif | |
1025 | #if defined (SYS_putmsg) | |
1026 | syscall_table[SYS_putmsg] = "putmsg"; | |
1027 | #endif | |
1028 | #if defined (SYS_poll) | |
1029 | syscall_table[SYS_poll] = "poll"; | |
1030 | #endif | |
1031 | #if defined (SYS_lstat) | |
1032 | syscall_table[SYS_lstat] = "lstat"; | |
1033 | #endif | |
1034 | #if defined (SYS_symlink) | |
1035 | syscall_table[SYS_symlink] = "symlink"; | |
1036 | #endif | |
1037 | #if defined (SYS_readlink) | |
1038 | syscall_table[SYS_readlink] = "readlink"; | |
1039 | #endif | |
1040 | #if defined (SYS_setgroups) | |
1041 | syscall_table[SYS_setgroups] = "setgroups"; | |
1042 | #endif | |
1043 | #if defined (SYS_getgroups) | |
1044 | syscall_table[SYS_getgroups] = "getgroups"; | |
1045 | #endif | |
1046 | #if defined (SYS_fchmod) | |
1047 | syscall_table[SYS_fchmod] = "fchmod"; | |
1048 | #endif | |
1049 | #if defined (SYS_fchown) | |
1050 | syscall_table[SYS_fchown] = "fchown"; | |
1051 | #endif | |
1052 | #if defined (SYS_sigprocmask) | |
1053 | syscall_table[SYS_sigprocmask] = "sigprocmask"; | |
1054 | #endif | |
1055 | #if defined (SYS_sigsuspend) | |
1056 | syscall_table[SYS_sigsuspend] = "sigsuspend"; | |
1057 | #endif | |
1058 | #if defined (SYS_sigaltstack) | |
1059 | syscall_table[SYS_sigaltstack] = "sigaltstack"; | |
1060 | #endif | |
1061 | #if defined (SYS_sigaction) | |
1062 | syscall_table[SYS_sigaction] = "sigaction"; | |
1063 | #endif | |
1064 | #if defined (SYS_sigpending) | |
1065 | syscall_table[SYS_sigpending] = "sigpending"; | |
1066 | #endif | |
1067 | #if defined (SYS_context) | |
1068 | syscall_table[SYS_context] = "context"; | |
1069 | #endif | |
1070 | #if defined (SYS_evsys) | |
1071 | syscall_table[SYS_evsys] = "evsys"; | |
1072 | #endif | |
1073 | #if defined (SYS_evtrapret) | |
1074 | syscall_table[SYS_evtrapret] = "evtrapret"; | |
1075 | #endif | |
1076 | #if defined (SYS_statvfs) | |
1077 | syscall_table[SYS_statvfs] = "statvfs"; | |
1078 | #endif | |
1079 | #if defined (SYS_fstatvfs) | |
1080 | syscall_table[SYS_fstatvfs] = "fstatvfs"; | |
1081 | #endif | |
1082 | #if defined (SYS_nfssys) | |
1083 | syscall_table[SYS_nfssys] = "nfssys"; | |
1084 | #endif | |
1085 | #if defined (SYS_waitsys) | |
1086 | syscall_table[SYS_waitsys] = "waitsys"; | |
1087 | #endif | |
1088 | #if defined (SYS_sigsendsys) | |
1089 | syscall_table[SYS_sigsendsys] = "sigsendsys"; | |
1090 | #endif | |
1091 | #if defined (SYS_hrtsys) | |
1092 | syscall_table[SYS_hrtsys] = "hrtsys"; | |
1093 | #endif | |
1094 | #if defined (SYS_acancel) | |
1095 | syscall_table[SYS_acancel] = "acancel"; | |
1096 | #endif | |
1097 | #if defined (SYS_async) | |
1098 | syscall_table[SYS_async] = "async"; | |
1099 | #endif | |
1100 | #if defined (SYS_priocntlsys) | |
1101 | syscall_table[SYS_priocntlsys] = "priocntlsys"; | |
1102 | #endif | |
1103 | #if defined (SYS_pathconf) | |
1104 | syscall_table[SYS_pathconf] = "pathconf"; | |
1105 | #endif | |
1106 | #if defined (SYS_mincore) | |
1107 | syscall_table[SYS_mincore] = "mincore"; | |
1108 | #endif | |
1109 | #if defined (SYS_mmap) | |
1110 | syscall_table[SYS_mmap] = "mmap"; | |
1111 | #endif | |
1112 | #if defined (SYS_mprotect) | |
1113 | syscall_table[SYS_mprotect] = "mprotect"; | |
1114 | #endif | |
1115 | #if defined (SYS_munmap) | |
1116 | syscall_table[SYS_munmap] = "munmap"; | |
1117 | #endif | |
1118 | #if defined (SYS_fpathconf) | |
1119 | syscall_table[SYS_fpathconf] = "fpathconf"; | |
1120 | #endif | |
1121 | #if defined (SYS_vfork) | |
1122 | syscall_table[SYS_vfork] = "vfork"; | |
1123 | #endif | |
1124 | #if defined (SYS_fchdir) | |
1125 | syscall_table[SYS_fchdir] = "fchdir"; | |
1126 | #endif | |
1127 | #if defined (SYS_readv) | |
1128 | syscall_table[SYS_readv] = "readv"; | |
1129 | #endif | |
1130 | #if defined (SYS_writev) | |
1131 | syscall_table[SYS_writev] = "writev"; | |
1132 | #endif | |
1133 | #if defined (SYS_xstat) | |
1134 | syscall_table[SYS_xstat] = "xstat"; | |
1135 | #endif | |
1136 | #if defined (SYS_lxstat) | |
1137 | syscall_table[SYS_lxstat] = "lxstat"; | |
1138 | #endif | |
1139 | #if defined (SYS_fxstat) | |
1140 | syscall_table[SYS_fxstat] = "fxstat"; | |
1141 | #endif | |
1142 | #if defined (SYS_xmknod) | |
1143 | syscall_table[SYS_xmknod] = "xmknod"; | |
1144 | #endif | |
1145 | #if defined (SYS_clocal) | |
1146 | syscall_table[SYS_clocal] = "clocal"; | |
1147 | #endif | |
1148 | #if defined (SYS_setrlimit) | |
1149 | syscall_table[SYS_setrlimit] = "setrlimit"; | |
1150 | #endif | |
1151 | #if defined (SYS_getrlimit) | |
1152 | syscall_table[SYS_getrlimit] = "getrlimit"; | |
1153 | #endif | |
1154 | #if defined (SYS_lchown) | |
1155 | syscall_table[SYS_lchown] = "lchown"; | |
1156 | #endif | |
1157 | #if defined (SYS_memcntl) | |
1158 | syscall_table[SYS_memcntl] = "memcntl"; | |
1159 | #endif | |
1160 | #if defined (SYS_getpmsg) | |
1161 | syscall_table[SYS_getpmsg] = "getpmsg"; | |
1162 | #endif | |
1163 | #if defined (SYS_putpmsg) | |
1164 | syscall_table[SYS_putpmsg] = "putpmsg"; | |
1165 | #endif | |
1166 | #if defined (SYS_rename) | |
1167 | syscall_table[SYS_rename] = "rename"; | |
1168 | #endif | |
1169 | #if defined (SYS_uname) | |
1170 | syscall_table[SYS_uname] = "uname"; | |
1171 | #endif | |
1172 | #if defined (SYS_setegid) | |
1173 | syscall_table[SYS_setegid] = "setegid"; | |
1174 | #endif | |
1175 | #if defined (SYS_sysconfig) | |
1176 | syscall_table[SYS_sysconfig] = "sysconfig"; | |
1177 | #endif | |
1178 | #if defined (SYS_adjtime) | |
1179 | syscall_table[SYS_adjtime] = "adjtime"; | |
1180 | #endif | |
1181 | #if defined (SYS_systeminfo) | |
1182 | syscall_table[SYS_systeminfo] = "systeminfo"; | |
1183 | #endif | |
1184 | #if defined (SYS_seteuid) | |
1185 | syscall_table[SYS_seteuid] = "seteuid"; | |
1186 | #endif | |
de43d7d0 SG |
1187 | #if defined (SYS_sproc) |
1188 | syscall_table[SYS_sproc] = "sproc"; | |
1189 | #endif | |
cc221e76 | 1190 | } |
35f5886e FF |
1191 | |
1192 | /* | |
1193 | ||
3fbdd536 | 1194 | LOCAL FUNCTION |
35f5886e | 1195 | |
3fbdd536 | 1196 | procfs_kill_inferior - kill any currently inferior |
35f5886e FF |
1197 | |
1198 | SYNOPSIS | |
1199 | ||
3fbdd536 | 1200 | void procfs_kill_inferior (void) |
35f5886e FF |
1201 | |
1202 | DESCRIPTION | |
1203 | ||
1204 | Kill any current inferior. | |
1205 | ||
1206 | NOTES | |
1207 | ||
1208 | Kills even attached inferiors. Presumably the user has already | |
1209 | been prompted that the inferior is an attached one rather than | |
1210 | one started by gdb. (FIXME?) | |
1211 | ||
1212 | */ | |
1213 | ||
3fbdd536 JG |
1214 | static void |
1215 | procfs_kill_inferior () | |
35f5886e | 1216 | { |
de43d7d0 | 1217 | target_mourn_inferior (); |
35f5886e FF |
1218 | } |
1219 | ||
1220 | /* | |
1221 | ||
1222 | LOCAL FUNCTION | |
1223 | ||
1224 | unconditionally_kill_inferior - terminate the inferior | |
1225 | ||
1226 | SYNOPSIS | |
1227 | ||
de43d7d0 | 1228 | static void unconditionally_kill_inferior (struct procinfo *) |
35f5886e FF |
1229 | |
1230 | DESCRIPTION | |
1231 | ||
de43d7d0 | 1232 | Kill the specified inferior. |
35f5886e FF |
1233 | |
1234 | NOTE | |
1235 | ||
1236 | A possibly useful enhancement would be to first try sending | |
1237 | the inferior a terminate signal, politely asking it to commit | |
de43d7d0 SG |
1238 | suicide, before we murder it (we could call that |
1239 | politely_kill_inferior()). | |
35f5886e FF |
1240 | |
1241 | */ | |
1242 | ||
1243 | static void | |
de43d7d0 SG |
1244 | unconditionally_kill_inferior (pi) |
1245 | struct procinfo *pi; | |
35f5886e FF |
1246 | { |
1247 | int signo; | |
de43d7d0 | 1248 | int ppid; |
35f5886e | 1249 | |
de43d7d0 SG |
1250 | ppid = pi->prstatus.pr_ppid; |
1251 | ||
35f5886e | 1252 | signo = SIGKILL; |
2592eef8 PS |
1253 | |
1254 | #ifdef PROCFS_NEED_PIOCSSIG_FOR_KILL | |
f5de4904 PS |
1255 | /* Alpha OSF/1 procfs needs a PIOCSSIG call with a SIGKILL signal |
1256 | to kill the inferior, otherwise it might remain stopped with a | |
1257 | pending SIGKILL. | |
2592eef8 PS |
1258 | We do not check the result of the PIOCSSIG, the inferior might have |
1259 | died already. */ | |
1260 | { | |
1261 | struct siginfo newsiginfo; | |
1262 | ||
1263 | memset ((char *) &newsiginfo, 0, sizeof (newsiginfo)); | |
1264 | newsiginfo.si_signo = signo; | |
1265 | newsiginfo.si_code = 0; | |
1266 | newsiginfo.si_errno = 0; | |
1267 | newsiginfo.si_pid = getpid (); | |
1268 | newsiginfo.si_uid = getuid (); | |
1269 | ioctl (pi->fd, PIOCSSIG, &newsiginfo); | |
1270 | } | |
f5de4904 PS |
1271 | #else |
1272 | ioctl (pi->fd, PIOCKILL, &signo); | |
2592eef8 PS |
1273 | #endif |
1274 | ||
de43d7d0 SG |
1275 | close_proc_file (pi); |
1276 | ||
1277 | /* Only wait() for our direct children. Our grandchildren zombies are killed | |
1278 | by the death of their parents. */ | |
1279 | ||
1280 | if (ppid == getpid()) | |
1281 | wait ((int *) 0); | |
35f5886e FF |
1282 | } |
1283 | ||
1284 | /* | |
1285 | ||
3fbdd536 | 1286 | LOCAL FUNCTION |
35f5886e | 1287 | |
3fbdd536 | 1288 | procfs_xfer_memory -- copy data to or from inferior memory space |
35f5886e FF |
1289 | |
1290 | SYNOPSIS | |
1291 | ||
3fbdd536 | 1292 | int procfs_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, |
35f5886e FF |
1293 | int dowrite, struct target_ops target) |
1294 | ||
1295 | DESCRIPTION | |
1296 | ||
1297 | Copy LEN bytes to/from inferior's memory starting at MEMADDR | |
1298 | from/to debugger memory starting at MYADDR. Copy from inferior | |
1299 | if DOWRITE is zero or to inferior if DOWRITE is nonzero. | |
1300 | ||
1301 | Returns the length copied, which is either the LEN argument or | |
3fbdd536 | 1302 | zero. This xfer function does not do partial moves, since procfs_ops |
35f5886e FF |
1303 | doesn't allow memory operations to cross below us in the target stack |
1304 | anyway. | |
1305 | ||
1306 | NOTES | |
1307 | ||
1308 | The /proc interface makes this an almost trivial task. | |
1309 | */ | |
1310 | ||
3fbdd536 JG |
1311 | static int |
1312 | procfs_xfer_memory (memaddr, myaddr, len, dowrite, target) | |
1ab3bf1b JG |
1313 | CORE_ADDR memaddr; |
1314 | char *myaddr; | |
1315 | int len; | |
1316 | int dowrite; | |
1317 | struct target_ops *target; /* ignored */ | |
35f5886e FF |
1318 | { |
1319 | int nbytes = 0; | |
de43d7d0 | 1320 | struct procinfo *pi; |
35f5886e | 1321 | |
de43d7d0 SG |
1322 | pi = current_procinfo; |
1323 | ||
1324 | if (lseek(pi->fd, (off_t) memaddr, 0) == (off_t) memaddr) | |
35f5886e FF |
1325 | { |
1326 | if (dowrite) | |
1327 | { | |
de43d7d0 | 1328 | nbytes = write (pi->fd, myaddr, len); |
35f5886e FF |
1329 | } |
1330 | else | |
1331 | { | |
de43d7d0 | 1332 | nbytes = read (pi->fd, myaddr, len); |
35f5886e FF |
1333 | } |
1334 | if (nbytes < 0) | |
1335 | { | |
1336 | nbytes = 0; | |
1337 | } | |
1338 | } | |
1339 | return (nbytes); | |
1340 | } | |
1341 | ||
1342 | /* | |
1343 | ||
3fbdd536 | 1344 | LOCAL FUNCTION |
35f5886e | 1345 | |
3fbdd536 | 1346 | procfs_store_registers -- copy register values back to inferior |
35f5886e FF |
1347 | |
1348 | SYNOPSIS | |
1349 | ||
3fbdd536 | 1350 | void procfs_store_registers (int regno) |
35f5886e FF |
1351 | |
1352 | DESCRIPTION | |
1353 | ||
1354 | Store our current register values back into the inferior. If | |
1355 | REGNO is -1 then store all the register, otherwise store just | |
1356 | the value specified by REGNO. | |
1357 | ||
1358 | NOTES | |
1359 | ||
1360 | If we are storing only a single register, we first have to get all | |
1361 | the current values from the process, overwrite the desired register | |
1362 | in the gregset with the one we want from gdb's registers, and then | |
1363 | send the whole set back to the process. For writing all the | |
1364 | registers, all we have to do is generate the gregset and send it to | |
1365 | the process. | |
1366 | ||
1367 | Also note that the process has to be stopped on an event of interest | |
1368 | for this to work, which basically means that it has to have been | |
1369 | run under the control of one of the other /proc ioctl calls and not | |
1370 | ptrace. Since we don't use ptrace anyway, we don't worry about this | |
1371 | fine point, but it is worth noting for future reference. | |
1372 | ||
1373 | Gdb is confused about what this function is supposed to return. | |
1374 | Some versions return a value, others return nothing. Some are | |
1375 | declared to return a value and actually return nothing. Gdb ignores | |
1376 | anything returned. (FIXME) | |
1377 | ||
1378 | */ | |
1379 | ||
3fbdd536 JG |
1380 | static void |
1381 | procfs_store_registers (regno) | |
1ab3bf1b | 1382 | int regno; |
35f5886e | 1383 | { |
de43d7d0 SG |
1384 | struct procinfo *pi; |
1385 | ||
1386 | pi = current_procinfo; | |
1387 | ||
35f5886e FF |
1388 | if (regno != -1) |
1389 | { | |
de43d7d0 | 1390 | ioctl (pi->fd, PIOCGREG, &pi->gregset); |
35f5886e | 1391 | } |
de43d7d0 SG |
1392 | fill_gregset (&pi->gregset, regno); |
1393 | ioctl (pi->fd, PIOCSREG, &pi->gregset); | |
35f5886e FF |
1394 | |
1395 | #if defined (FP0_REGNUM) | |
1396 | ||
1397 | /* Now repeat everything using the floating point register set, if the | |
1398 | target has floating point hardware. Since we ignore the returned value, | |
1399 | we'll never know whether it worked or not anyway. */ | |
1400 | ||
1401 | if (regno != -1) | |
1402 | { | |
de43d7d0 | 1403 | ioctl (pi->fd, PIOCGFPREG, &pi->fpregset); |
35f5886e | 1404 | } |
de43d7d0 SG |
1405 | fill_fpregset (&pi->fpregset, regno); |
1406 | ioctl (pi->fd, PIOCSFPREG, &pi->fpregset); | |
35f5886e FF |
1407 | |
1408 | #endif /* FP0_REGNUM */ | |
1409 | ||
1410 | } | |
1411 | ||
1412 | /* | |
1413 | ||
3fbdd536 | 1414 | LOCAL FUNCTION |
35f5886e | 1415 | |
de43d7d0 SG |
1416 | create_procinfo - initialize access to a /proc entry |
1417 | ||
1418 | SYNOPSIS | |
1419 | ||
eca4a350 | 1420 | struct procinfo * create_procinfo (int pid) |
de43d7d0 SG |
1421 | |
1422 | DESCRIPTION | |
1423 | ||
eca4a350 SG |
1424 | Allocate a procinfo structure, open the /proc file and then set up the |
1425 | set of signals and faults that are to be traced. Returns a pointer to | |
1426 | the new procinfo structure. | |
de43d7d0 SG |
1427 | |
1428 | NOTES | |
1429 | ||
1430 | If proc_init_failed ever gets called, control returns to the command | |
1431 | processing loop via the standard error handling code. | |
1432 | ||
1433 | */ | |
1434 | ||
eca4a350 | 1435 | static struct procinfo * |
de43d7d0 SG |
1436 | create_procinfo (pid) |
1437 | int pid; | |
1438 | { | |
1439 | struct procinfo *pi; | |
1440 | ||
2592eef8 PS |
1441 | pi = find_procinfo (pid, 1); |
1442 | if (pi != NULL) | |
1443 | return pi; /* All done! It already exists */ | |
de43d7d0 SG |
1444 | |
1445 | pi = (struct procinfo *) xmalloc (sizeof (struct procinfo)); | |
1446 | ||
1447 | if (!open_proc_file (pid, pi, O_RDWR)) | |
1448 | proc_init_failed (pi, "can't open process file"); | |
1449 | ||
1450 | /* Add new process to process info list */ | |
1451 | ||
1452 | pi->next = procinfo_list; | |
1453 | procinfo_list = pi; | |
1454 | ||
1455 | add_fd (pi); /* Add to list for poll/select */ | |
1456 | ||
1457 | memset ((char *) &pi->prrun, 0, sizeof (pi->prrun)); | |
1458 | prfillset (&pi->prrun.pr_trace); | |
1459 | procfs_notice_signals (pid); | |
1460 | prfillset (&pi->prrun.pr_fault); | |
1461 | prdelset (&pi->prrun.pr_fault, FLTPAGE); | |
1462 | ||
b9e58503 PS |
1463 | #ifdef PROCFS_DONT_TRACE_FAULTS |
1464 | premptyset (&pi->prrun.pr_fault); | |
2592eef8 PS |
1465 | #endif |
1466 | ||
de43d7d0 SG |
1467 | if (ioctl (pi->fd, PIOCWSTOP, &pi->prstatus) < 0) |
1468 | proc_init_failed (pi, "PIOCWSTOP failed"); | |
1469 | ||
1470 | if (ioctl (pi->fd, PIOCSFAULT, &pi->prrun.pr_fault) < 0) | |
1471 | proc_init_failed (pi, "PIOCSFAULT failed"); | |
eca4a350 SG |
1472 | |
1473 | return pi; | |
de43d7d0 SG |
1474 | } |
1475 | ||
1476 | /* | |
1477 | ||
1478 | LOCAL FUNCTION | |
1479 | ||
1480 | procfs_init_inferior - initialize target vector and access to a | |
1481 | /proc entry | |
35f5886e FF |
1482 | |
1483 | SYNOPSIS | |
1484 | ||
3fbdd536 | 1485 | void procfs_init_inferior (int pid) |
35f5886e FF |
1486 | |
1487 | DESCRIPTION | |
1488 | ||
1489 | When gdb starts an inferior, this function is called in the parent | |
1490 | process immediately after the fork. It waits for the child to stop | |
1491 | on the return from the exec system call (the child itself takes care | |
1492 | of ensuring that this is set up), then sets up the set of signals | |
1493 | and faults that are to be traced. | |
1494 | ||
1495 | NOTES | |
1496 | ||
1497 | If proc_init_failed ever gets called, control returns to the command | |
1498 | processing loop via the standard error handling code. | |
cc221e76 | 1499 | |
35f5886e FF |
1500 | */ |
1501 | ||
3fbdd536 JG |
1502 | static void |
1503 | procfs_init_inferior (pid) | |
1ab3bf1b | 1504 | int pid; |
35f5886e | 1505 | { |
3fbdd536 JG |
1506 | push_target (&procfs_ops); |
1507 | ||
de43d7d0 SG |
1508 | create_procinfo (pid); |
1509 | add_thread (pid); /* Setup initial thread */ | |
bc28a06c | 1510 | |
2592eef8 PS |
1511 | #ifdef START_INFERIOR_TRAPS_EXPECTED |
1512 | startup_inferior (START_INFERIOR_TRAPS_EXPECTED); | |
1513 | #else | |
bc28a06c JK |
1514 | /* One trap to exec the shell, one to exec the program being debugged. */ |
1515 | startup_inferior (2); | |
2592eef8 | 1516 | #endif |
35f5886e FF |
1517 | } |
1518 | ||
1519 | /* | |
1520 | ||
cc221e76 FF |
1521 | GLOBAL FUNCTION |
1522 | ||
3950a34e | 1523 | procfs_notice_signals |
cc221e76 FF |
1524 | |
1525 | SYNOPSIS | |
1526 | ||
952a820e | 1527 | static void procfs_notice_signals (int pid); |
cc221e76 FF |
1528 | |
1529 | DESCRIPTION | |
1530 | ||
1531 | When the user changes the state of gdb's signal handling via the | |
1532 | "handle" command, this function gets called to see if any change | |
1533 | in the /proc interface is required. It is also called internally | |
1534 | by other /proc interface functions to initialize the state of | |
1535 | the traced signal set. | |
1536 | ||
1537 | One thing it does is that signals for which the state is "nostop", | |
1538 | "noprint", and "pass", have their trace bits reset in the pr_trace | |
1539 | field, so that they are no longer traced. This allows them to be | |
1540 | delivered directly to the inferior without the debugger ever being | |
1541 | involved. | |
1542 | */ | |
1543 | ||
3950a34e | 1544 | static void |
de43d7d0 | 1545 | procfs_notice_signals (pid) |
952a820e | 1546 | int pid; |
cc221e76 FF |
1547 | { |
1548 | int signo; | |
de43d7d0 | 1549 | struct procinfo *pi; |
cc221e76 | 1550 | |
de43d7d0 SG |
1551 | pi = find_procinfo (pid, 0); |
1552 | ||
1553 | for (signo = 0; signo < NSIG; signo++) | |
cc221e76 | 1554 | { |
67ac9759 JK |
1555 | if (signal_stop_state (target_signal_from_host (signo)) == 0 && |
1556 | signal_print_state (target_signal_from_host (signo)) == 0 && | |
1557 | signal_pass_state (target_signal_from_host (signo)) == 1) | |
cc221e76 | 1558 | { |
de43d7d0 | 1559 | prdelset (&pi->prrun.pr_trace, signo); |
cc221e76 | 1560 | } |
de43d7d0 | 1561 | else |
cc221e76 | 1562 | { |
de43d7d0 | 1563 | praddset (&pi->prrun.pr_trace, signo); |
cc221e76 FF |
1564 | } |
1565 | } | |
de43d7d0 SG |
1566 | if (ioctl (pi->fd, PIOCSTRACE, &pi->prrun.pr_trace)) |
1567 | { | |
1568 | print_sys_errmsg ("PIOCSTRACE failed", errno); | |
1569 | } | |
cc221e76 FF |
1570 | } |
1571 | ||
1572 | /* | |
1573 | ||
3fbdd536 | 1574 | LOCAL FUNCTION |
35f5886e FF |
1575 | |
1576 | proc_set_exec_trap -- arrange for exec'd child to halt at startup | |
1577 | ||
1578 | SYNOPSIS | |
1579 | ||
1580 | void proc_set_exec_trap (void) | |
1581 | ||
1582 | DESCRIPTION | |
1583 | ||
1584 | This function is called in the child process when starting up | |
1585 | an inferior, prior to doing the exec of the actual inferior. | |
1586 | It sets the child process's exitset to make exit from the exec | |
1587 | system call an event of interest to stop on, and then simply | |
1588 | returns. The child does the exec, the system call returns, and | |
1589 | the child stops at the first instruction, ready for the gdb | |
1590 | parent process to take control of it. | |
1591 | ||
1592 | NOTE | |
1593 | ||
1594 | We need to use all local variables since the child may be sharing | |
1595 | it's data space with the parent, if vfork was used rather than | |
1596 | fork. | |
cc221e76 FF |
1597 | |
1598 | Also note that we want to turn off the inherit-on-fork flag in | |
1599 | the child process so that any grand-children start with all | |
1600 | tracing flags cleared. | |
35f5886e FF |
1601 | */ |
1602 | ||
3fbdd536 | 1603 | static void |
1ab3bf1b | 1604 | proc_set_exec_trap () |
35f5886e FF |
1605 | { |
1606 | sysset_t exitset; | |
fb63d460 | 1607 | sysset_t entryset; |
35f5886e FF |
1608 | auto char procname[32]; |
1609 | int fd; | |
1610 | ||
4ed3a9ea | 1611 | sprintf (procname, PROC_NAME_FMT, getpid ()); |
35f5886e FF |
1612 | if ((fd = open (procname, O_RDWR)) < 0) |
1613 | { | |
1614 | perror (procname); | |
199b2450 | 1615 | gdb_flush (gdb_stderr); |
35f5886e FF |
1616 | _exit (127); |
1617 | } | |
1618 | premptyset (&exitset); | |
fb63d460 | 1619 | premptyset (&entryset); |
407a8389 | 1620 | |
2592eef8 PS |
1621 | #ifdef PIOCSSPCACT |
1622 | /* Under Alpha OSF/1 we have to use a PIOCSSPCACT ioctl to trace | |
1623 | exits from exec system calls because of the user level loader. */ | |
1624 | { | |
1625 | int prfs_flags; | |
1626 | ||
1627 | if (ioctl (fd, PIOCGSPCACT, &prfs_flags) < 0) | |
1628 | { | |
1629 | perror (procname); | |
1630 | gdb_flush (gdb_stderr); | |
1631 | _exit (127); | |
1632 | } | |
1633 | prfs_flags |= PRFS_STOPEXEC; | |
1634 | if (ioctl (fd, PIOCSSPCACT, &prfs_flags) < 0) | |
1635 | { | |
1636 | perror (procname); | |
1637 | gdb_flush (gdb_stderr); | |
1638 | _exit (127); | |
1639 | } | |
1640 | } | |
1641 | #else | |
cc221e76 FF |
1642 | /* GW: Rationale... |
1643 | Not all systems with /proc have all the exec* syscalls with the same | |
1644 | names. On the SGI, for example, there is no SYS_exec, but there | |
1645 | *is* a SYS_execv. So, we try to account for that. */ | |
1646 | ||
407a8389 | 1647 | #ifdef SYS_exec |
35f5886e | 1648 | praddset (&exitset, SYS_exec); |
407a8389 SG |
1649 | #endif |
1650 | #ifdef SYS_execve | |
35f5886e | 1651 | praddset (&exitset, SYS_execve); |
407a8389 SG |
1652 | #endif |
1653 | #ifdef SYS_execv | |
fb63d460 | 1654 | praddset (&exitset, SYS_execv); |
407a8389 SG |
1655 | #endif |
1656 | ||
35f5886e FF |
1657 | if (ioctl (fd, PIOCSEXIT, &exitset) < 0) |
1658 | { | |
1659 | perror (procname); | |
199b2450 | 1660 | gdb_flush (gdb_stderr); |
35f5886e FF |
1661 | _exit (127); |
1662 | } | |
2592eef8 | 1663 | #endif |
cc221e76 | 1664 | |
fb63d460 SG |
1665 | praddset (&entryset, SYS_exit); |
1666 | ||
1667 | if (ioctl (fd, PIOCSENTRY, &entryset) < 0) | |
1668 | { | |
1669 | perror (procname); | |
199b2450 | 1670 | gdb_flush (gdb_stderr); |
fb63d460 SG |
1671 | _exit (126); |
1672 | } | |
1673 | ||
cc221e76 FF |
1674 | /* Turn off inherit-on-fork flag so that all grand-children of gdb |
1675 | start with tracing flags cleared. */ | |
1676 | ||
5c1c5e67 | 1677 | #if defined (PIOCRESET) /* New method */ |
cc221e76 FF |
1678 | { |
1679 | long pr_flags; | |
1680 | pr_flags = PR_FORK; | |
4ed3a9ea | 1681 | ioctl (fd, PIOCRESET, &pr_flags); |
cc221e76 | 1682 | } |
5c1c5e67 FF |
1683 | #else |
1684 | #if defined (PIOCRFORK) /* Original method */ | |
4ed3a9ea | 1685 | ioctl (fd, PIOCRFORK, NULL); |
cc221e76 | 1686 | #endif |
ec8ceca3 JG |
1687 | #endif |
1688 | ||
1689 | /* Turn on run-on-last-close flag so that this process will not hang | |
1690 | if GDB goes away for some reason. */ | |
1691 | ||
1692 | #if defined (PIOCSET) /* New method */ | |
1693 | { | |
1694 | long pr_flags; | |
1695 | pr_flags = PR_RLC; | |
1696 | (void) ioctl (fd, PIOCSET, &pr_flags); | |
1697 | } | |
1698 | #else | |
1699 | #if defined (PIOCSRLC) /* Original method */ | |
1700 | (void) ioctl (fd, PIOCSRLC, 0); | |
1701 | #endif | |
cc221e76 | 1702 | #endif |
35f5886e FF |
1703 | } |
1704 | ||
f8b76e70 FF |
1705 | /* |
1706 | ||
a39ad5ce FF |
1707 | GLOBAL FUNCTION |
1708 | ||
1709 | proc_iterate_over_mappings -- call function for every mapped space | |
1710 | ||
1711 | SYNOPSIS | |
1712 | ||
1713 | int proc_iterate_over_mappings (int (*func)()) | |
1714 | ||
1715 | DESCRIPTION | |
1716 | ||
1717 | Given a pointer to a function, call that function for every | |
1718 | mapped address space, passing it an open file descriptor for | |
1719 | the file corresponding to that mapped address space (if any) | |
1720 | and the base address of the mapped space. Quit when we hit | |
1721 | the end of the mappings or the function returns nonzero. | |
1722 | */ | |
1723 | ||
1724 | int | |
1ab3bf1b JG |
1725 | proc_iterate_over_mappings (func) |
1726 | int (*func) PARAMS ((int, CORE_ADDR)); | |
a39ad5ce FF |
1727 | { |
1728 | int nmap; | |
1729 | int fd; | |
1730 | int funcstat = 0; | |
1731 | struct prmap *prmaps; | |
1732 | struct prmap *prmap; | |
de43d7d0 SG |
1733 | struct procinfo *pi; |
1734 | ||
1735 | pi = current_procinfo; | |
a39ad5ce | 1736 | |
de43d7d0 | 1737 | if (ioctl (pi->fd, PIOCNMAP, &nmap) == 0) |
a39ad5ce | 1738 | { |
1ab3bf1b | 1739 | prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps)); |
de43d7d0 | 1740 | if (ioctl (pi->fd, PIOCMAP, prmaps) == 0) |
a39ad5ce FF |
1741 | { |
1742 | for (prmap = prmaps; prmap -> pr_size && funcstat == 0; ++prmap) | |
1743 | { | |
de43d7d0 | 1744 | fd = proc_address_to_fd (pi, (CORE_ADDR) prmap -> pr_vaddr, 0); |
1ab3bf1b | 1745 | funcstat = (*func) (fd, (CORE_ADDR) prmap -> pr_vaddr); |
a39ad5ce FF |
1746 | close (fd); |
1747 | } | |
1748 | } | |
1749 | } | |
1750 | return (funcstat); | |
1751 | } | |
1752 | ||
3fbdd536 | 1753 | #if 0 /* Currently unused */ |
a39ad5ce FF |
1754 | /* |
1755 | ||
f8b76e70 FF |
1756 | GLOBAL FUNCTION |
1757 | ||
1758 | proc_base_address -- find base address for segment containing address | |
1759 | ||
1760 | SYNOPSIS | |
1761 | ||
1762 | CORE_ADDR proc_base_address (CORE_ADDR addr) | |
1763 | ||
1764 | DESCRIPTION | |
1765 | ||
1766 | Given an address of a location in the inferior, find and return | |
1767 | the base address of the mapped segment containing that address. | |
1768 | ||
1769 | This is used for example, by the shared library support code, | |
1770 | where we have the pc value for some location in the shared library | |
1771 | where we are stopped, and need to know the base address of the | |
1772 | segment containing that address. | |
1773 | */ | |
1774 | ||
f8b76e70 | 1775 | CORE_ADDR |
1ab3bf1b | 1776 | proc_base_address (addr) |
cc221e76 | 1777 | CORE_ADDR addr; |
f8b76e70 FF |
1778 | { |
1779 | int nmap; | |
1780 | struct prmap *prmaps; | |
1781 | struct prmap *prmap; | |
1782 | CORE_ADDR baseaddr = 0; | |
de43d7d0 | 1783 | struct procinfo *pi; |
f8b76e70 | 1784 | |
de43d7d0 SG |
1785 | pi = current_procinfo; |
1786 | ||
1787 | if (ioctl (pi->fd, PIOCNMAP, &nmap) == 0) | |
f8b76e70 | 1788 | { |
1ab3bf1b | 1789 | prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps)); |
de43d7d0 | 1790 | if (ioctl (pi->fd, PIOCMAP, prmaps) == 0) |
f8b76e70 FF |
1791 | { |
1792 | for (prmap = prmaps; prmap -> pr_size; ++prmap) | |
1793 | { | |
1794 | if ((prmap -> pr_vaddr <= (caddr_t) addr) && | |
1795 | (prmap -> pr_vaddr + prmap -> pr_size > (caddr_t) addr)) | |
1796 | { | |
1797 | baseaddr = (CORE_ADDR) prmap -> pr_vaddr; | |
1798 | break; | |
1799 | } | |
1800 | } | |
1801 | } | |
1802 | } | |
1803 | return (baseaddr); | |
1804 | } | |
1805 | ||
1ab3bf1b JG |
1806 | #endif /* 0 */ |
1807 | ||
f8b76e70 FF |
1808 | /* |
1809 | ||
cc221e76 | 1810 | LOCAL FUNCTION |
f8b76e70 FF |
1811 | |
1812 | proc_address_to_fd -- return open fd for file mapped to address | |
1813 | ||
1814 | SYNOPSIS | |
1815 | ||
de43d7d0 | 1816 | int proc_address_to_fd (struct procinfo *pi, CORE_ADDR addr, complain) |
f8b76e70 FF |
1817 | |
1818 | DESCRIPTION | |
1819 | ||
1820 | Given an address in the current inferior's address space, use the | |
1821 | /proc interface to find an open file descriptor for the file that | |
1822 | this address was mapped in from. Return -1 if there is no current | |
1823 | inferior. Print a warning message if there is an inferior but | |
1824 | the address corresponds to no file (IE a bogus address). | |
1825 | ||
1826 | */ | |
1827 | ||
1ab3bf1b | 1828 | static int |
de43d7d0 SG |
1829 | proc_address_to_fd (pi, addr, complain) |
1830 | struct procinfo *pi; | |
1ab3bf1b JG |
1831 | CORE_ADDR addr; |
1832 | int complain; | |
f8b76e70 FF |
1833 | { |
1834 | int fd = -1; | |
1835 | ||
de43d7d0 | 1836 | if ((fd = ioctl (pi->fd, PIOCOPENM, (caddr_t *) &addr)) < 0) |
f8b76e70 | 1837 | { |
de43d7d0 | 1838 | if (complain) |
f8b76e70 | 1839 | { |
de43d7d0 SG |
1840 | print_sys_errmsg (pi->pathname, errno); |
1841 | warning ("can't find mapped file for address 0x%x", addr); | |
f8b76e70 FF |
1842 | } |
1843 | } | |
1844 | return (fd); | |
1845 | } | |
1846 | ||
35f5886e | 1847 | |
3fbdd536 JG |
1848 | /* Attach to process PID, then initialize for debugging it |
1849 | and wait for the trace-trap that results from attaching. */ | |
1850 | ||
1851 | static void | |
1852 | procfs_attach (args, from_tty) | |
1853 | char *args; | |
1854 | int from_tty; | |
1855 | { | |
1856 | char *exec_file; | |
1857 | int pid; | |
1858 | ||
1859 | if (!args) | |
1860 | error_no_arg ("process-id to attach"); | |
1861 | ||
1862 | pid = atoi (args); | |
1863 | ||
1864 | if (pid == getpid()) /* Trying to masturbate? */ | |
1865 | error ("I refuse to debug myself!"); | |
1866 | ||
1867 | if (from_tty) | |
1868 | { | |
1869 | exec_file = (char *) get_exec_file (0); | |
1870 | ||
1871 | if (exec_file) | |
199b2450 | 1872 | printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, target_pid_to_str (pid)); |
3fbdd536 | 1873 | else |
199b2450 | 1874 | printf_unfiltered ("Attaching to %s\n", target_pid_to_str (pid)); |
3fbdd536 | 1875 | |
199b2450 | 1876 | gdb_flush (gdb_stdout); |
3fbdd536 JG |
1877 | } |
1878 | ||
1879 | do_attach (pid); | |
1880 | inferior_pid = pid; | |
1881 | push_target (&procfs_ops); | |
1882 | } | |
1883 | ||
1884 | ||
1885 | /* Take a program previously attached to and detaches it. | |
1886 | The program resumes execution and will no longer stop | |
1887 | on signals, etc. We'd better not have left any breakpoints | |
1888 | in the program or it'll die when it hits one. For this | |
1889 | to work, it may be necessary for the process to have been | |
1890 | previously attached. It *might* work if the program was | |
1891 | started via the normal ptrace (PTRACE_TRACEME). */ | |
1892 | ||
1893 | static void | |
1894 | procfs_detach (args, from_tty) | |
1895 | char *args; | |
1896 | int from_tty; | |
1897 | { | |
1898 | int siggnal = 0; | |
1899 | ||
1900 | if (from_tty) | |
1901 | { | |
1902 | char *exec_file = get_exec_file (0); | |
1903 | if (exec_file == 0) | |
1904 | exec_file = ""; | |
199b2450 | 1905 | printf_unfiltered ("Detaching from program: %s %s\n", |
25286543 | 1906 | exec_file, target_pid_to_str (inferior_pid)); |
199b2450 | 1907 | gdb_flush (gdb_stdout); |
3fbdd536 JG |
1908 | } |
1909 | if (args) | |
1910 | siggnal = atoi (args); | |
1911 | ||
1912 | do_detach (siggnal); | |
1913 | inferior_pid = 0; | |
1914 | unpush_target (&procfs_ops); /* Pop out of handling an inferior */ | |
1915 | } | |
1916 | ||
1917 | /* Get ready to modify the registers array. On machines which store | |
1918 | individual registers, this doesn't need to do anything. On machines | |
1919 | which store all the registers in one fell swoop, this makes sure | |
1920 | that registers contains all the registers from the program being | |
1921 | debugged. */ | |
1922 | ||
1923 | static void | |
1924 | procfs_prepare_to_store () | |
1925 | { | |
1926 | #ifdef CHILD_PREPARE_TO_STORE | |
1927 | CHILD_PREPARE_TO_STORE (); | |
1928 | #endif | |
1929 | } | |
1930 | ||
1931 | /* Print status information about what we're accessing. */ | |
1932 | ||
1933 | static void | |
1934 | procfs_files_info (ignore) | |
1935 | struct target_ops *ignore; | |
1936 | { | |
199b2450 | 1937 | printf_unfiltered ("\tUsing the running image of %s %s via /proc.\n", |
25286543 | 1938 | attach_flag? "attached": "child", target_pid_to_str (inferior_pid)); |
3fbdd536 JG |
1939 | } |
1940 | ||
1941 | /* ARGSUSED */ | |
1942 | static void | |
1943 | procfs_open (arg, from_tty) | |
1944 | char *arg; | |
1945 | int from_tty; | |
1946 | { | |
1947 | error ("Use the \"run\" command to start a Unix child process."); | |
1948 | } | |
35f5886e FF |
1949 | |
1950 | /* | |
1951 | ||
3fbdd536 | 1952 | LOCAL FUNCTION |
35f5886e | 1953 | |
3fbdd536 | 1954 | do_attach -- attach to an already existing process |
35f5886e FF |
1955 | |
1956 | SYNOPSIS | |
1957 | ||
3fbdd536 | 1958 | int do_attach (int pid) |
35f5886e FF |
1959 | |
1960 | DESCRIPTION | |
1961 | ||
1962 | Attach to an already existing process with the specified process | |
1963 | id. If the process is not already stopped, query whether to | |
1964 | stop it or not. | |
1965 | ||
1966 | NOTES | |
1967 | ||
1968 | The option of stopping at attach time is specific to the /proc | |
1969 | versions of gdb. Versions using ptrace force the attachee | |
ec8ceca3 JG |
1970 | to stop. (I have changed this version to do so, too. All you |
1971 | have to do is "continue" to make it go on. -- gnu@cygnus.com) | |
35f5886e FF |
1972 | |
1973 | */ | |
1974 | ||
3fbdd536 JG |
1975 | static int |
1976 | do_attach (pid) | |
1ab3bf1b | 1977 | int pid; |
35f5886e | 1978 | { |
ec8ceca3 | 1979 | int result; |
de43d7d0 SG |
1980 | struct procinfo *pi; |
1981 | ||
1982 | pi = (struct procinfo *) xmalloc (sizeof (struct procinfo)); | |
ec8ceca3 | 1983 | |
de43d7d0 | 1984 | if (!open_proc_file (pid, pi, O_RDWR)) |
35f5886e | 1985 | { |
de43d7d0 SG |
1986 | free (pi); |
1987 | perror_with_name (pi->pathname); | |
35f5886e FF |
1988 | /* NOTREACHED */ |
1989 | } | |
1990 | ||
de43d7d0 SG |
1991 | /* Add new process to process info list */ |
1992 | ||
1993 | pi->next = procinfo_list; | |
1994 | procinfo_list = pi; | |
1995 | ||
1996 | add_fd (pi); /* Add to list for poll/select */ | |
1997 | ||
35f5886e FF |
1998 | /* Get current status of process and if it is not already stopped, |
1999 | then stop it. Remember whether or not it was stopped when we first | |
2000 | examined it. */ | |
2001 | ||
de43d7d0 | 2002 | if (ioctl (pi->fd, PIOCSTATUS, &pi->prstatus) < 0) |
35f5886e | 2003 | { |
de43d7d0 SG |
2004 | print_sys_errmsg (pi->pathname, errno); |
2005 | close_proc_file (pi); | |
35f5886e FF |
2006 | error ("PIOCSTATUS failed"); |
2007 | } | |
de43d7d0 | 2008 | if (pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP)) |
35f5886e | 2009 | { |
de43d7d0 | 2010 | pi->was_stopped = 1; |
35f5886e FF |
2011 | } |
2012 | else | |
2013 | { | |
de43d7d0 | 2014 | pi->was_stopped = 0; |
ec8ceca3 | 2015 | if (1 || query ("Process is currently running, stop it? ")) |
35f5886e | 2016 | { |
ec8ceca3 JG |
2017 | /* Make it run again when we close it. */ |
2018 | #if defined (PIOCSET) /* New method */ | |
2019 | { | |
2020 | long pr_flags; | |
2021 | pr_flags = PR_RLC; | |
de43d7d0 | 2022 | result = ioctl (pi->fd, PIOCSET, &pr_flags); |
ec8ceca3 JG |
2023 | } |
2024 | #else | |
2025 | #if defined (PIOCSRLC) /* Original method */ | |
de43d7d0 | 2026 | result = ioctl (pi->fd, PIOCSRLC, 0); |
ec8ceca3 JG |
2027 | #endif |
2028 | #endif | |
2029 | if (result < 0) | |
2030 | { | |
de43d7d0 SG |
2031 | print_sys_errmsg (pi->pathname, errno); |
2032 | close_proc_file (pi); | |
ec8ceca3 JG |
2033 | error ("PIOCSRLC or PIOCSET failed"); |
2034 | } | |
de43d7d0 | 2035 | if (ioctl (pi->fd, PIOCSTOP, &pi->prstatus) < 0) |
35f5886e | 2036 | { |
de43d7d0 SG |
2037 | print_sys_errmsg (pi->pathname, errno); |
2038 | close_proc_file (pi); | |
35f5886e FF |
2039 | error ("PIOCSTOP failed"); |
2040 | } | |
de43d7d0 | 2041 | pi->nopass_next_sigstop = 1; |
d65eee73 FF |
2042 | } |
2043 | else | |
2044 | { | |
199b2450 | 2045 | printf_unfiltered ("Ok, gdb will wait for %s to stop.\n", target_pid_to_str (pid)); |
35f5886e FF |
2046 | } |
2047 | } | |
ec8ceca3 | 2048 | |
35f5886e FF |
2049 | /* Remember some things about the inferior that we will, or might, change |
2050 | so that we can restore them when we detach. */ | |
2051 | ||
de43d7d0 SG |
2052 | ioctl (pi->fd, PIOCGTRACE, &pi->saved_trace); |
2053 | ioctl (pi->fd, PIOCGHOLD, &pi->saved_sighold); | |
2054 | ioctl (pi->fd, PIOCGFAULT, &pi->saved_fltset); | |
2055 | ioctl (pi->fd, PIOCGENTRY, &pi->saved_entryset); | |
2056 | ioctl (pi->fd, PIOCGEXIT, &pi->saved_exitset); | |
35f5886e FF |
2057 | |
2058 | /* Set up trace and fault sets, as gdb expects them. */ | |
2059 | ||
de43d7d0 SG |
2060 | memset (&pi->prrun, 0, sizeof (pi->prrun)); |
2061 | prfillset (&pi->prrun.pr_trace); | |
2062 | procfs_notice_signals (pid); | |
2063 | prfillset (&pi->prrun.pr_fault); | |
2064 | prdelset (&pi->prrun.pr_fault, FLTPAGE); | |
2592eef8 | 2065 | |
b9e58503 PS |
2066 | #ifdef PROCFS_DONT_TRACE_FAULTS |
2067 | premptyset (&pi->prrun.pr_fault); | |
2592eef8 PS |
2068 | #endif |
2069 | ||
de43d7d0 | 2070 | if (ioctl (pi->fd, PIOCSFAULT, &pi->prrun.pr_fault)) |
35f5886e | 2071 | { |
f66f459f | 2072 | print_sys_errmsg ("PIOCSFAULT failed", errno); |
35f5886e | 2073 | } |
de43d7d0 | 2074 | if (ioctl (pi->fd, PIOCSTRACE, &pi->prrun.pr_trace)) |
35f5886e | 2075 | { |
f66f459f | 2076 | print_sys_errmsg ("PIOCSTRACE failed", errno); |
35f5886e FF |
2077 | } |
2078 | attach_flag = 1; | |
2079 | return (pid); | |
2080 | } | |
2081 | ||
2082 | /* | |
2083 | ||
3fbdd536 | 2084 | LOCAL FUNCTION |
35f5886e | 2085 | |
3fbdd536 | 2086 | do_detach -- detach from an attached-to process |
35f5886e FF |
2087 | |
2088 | SYNOPSIS | |
2089 | ||
3fbdd536 | 2090 | void do_detach (int signal) |
35f5886e FF |
2091 | |
2092 | DESCRIPTION | |
2093 | ||
2094 | Detach from the current attachee. | |
2095 | ||
2096 | If signal is non-zero, the attachee is started running again and sent | |
2097 | the specified signal. | |
2098 | ||
2099 | If signal is zero and the attachee was not already stopped when we | |
2100 | attached to it, then we make it runnable again when we detach. | |
2101 | ||
2102 | Otherwise, we query whether or not to make the attachee runnable | |
2103 | again, since we may simply want to leave it in the state it was in | |
2104 | when we attached. | |
2105 | ||
2106 | We report any problems, but do not consider them errors, since we | |
2107 | MUST detach even if some things don't seem to go right. This may not | |
2108 | be the ideal situation. (FIXME). | |
2109 | */ | |
2110 | ||
3fbdd536 JG |
2111 | static void |
2112 | do_detach (signal) | |
1ab3bf1b | 2113 | int signal; |
35f5886e | 2114 | { |
ec8ceca3 | 2115 | int result; |
de43d7d0 SG |
2116 | struct procinfo *pi; |
2117 | ||
2118 | pi = current_procinfo; | |
ec8ceca3 | 2119 | |
35f5886e FF |
2120 | if (signal) |
2121 | { | |
de43d7d0 | 2122 | set_proc_siginfo (pi, signal); |
35f5886e | 2123 | } |
de43d7d0 | 2124 | if (ioctl (pi->fd, PIOCSEXIT, &pi->saved_exitset) < 0) |
35f5886e | 2125 | { |
de43d7d0 | 2126 | print_sys_errmsg (pi->pathname, errno); |
199b2450 | 2127 | printf_unfiltered ("PIOCSEXIT failed.\n"); |
35f5886e | 2128 | } |
de43d7d0 | 2129 | if (ioctl (pi->fd, PIOCSENTRY, &pi->saved_entryset) < 0) |
35f5886e | 2130 | { |
de43d7d0 | 2131 | print_sys_errmsg (pi->pathname, errno); |
199b2450 | 2132 | printf_unfiltered ("PIOCSENTRY failed.\n"); |
35f5886e | 2133 | } |
de43d7d0 | 2134 | if (ioctl (pi->fd, PIOCSTRACE, &pi->saved_trace) < 0) |
35f5886e | 2135 | { |
de43d7d0 | 2136 | print_sys_errmsg (pi->pathname, errno); |
199b2450 | 2137 | printf_unfiltered ("PIOCSTRACE failed.\n"); |
35f5886e | 2138 | } |
de43d7d0 | 2139 | if (ioctl (pi->fd, PIOCSHOLD, &pi->saved_sighold) < 0) |
cc221e76 | 2140 | { |
de43d7d0 | 2141 | print_sys_errmsg (pi->pathname, errno); |
199b2450 | 2142 | printf_unfiltered ("PIOSCHOLD failed.\n"); |
cc221e76 | 2143 | } |
de43d7d0 | 2144 | if (ioctl (pi->fd, PIOCSFAULT, &pi->saved_fltset) < 0) |
35f5886e | 2145 | { |
de43d7d0 | 2146 | print_sys_errmsg (pi->pathname, errno); |
199b2450 | 2147 | printf_unfiltered ("PIOCSFAULT failed.\n"); |
35f5886e | 2148 | } |
de43d7d0 | 2149 | if (ioctl (pi->fd, PIOCSTATUS, &pi->prstatus) < 0) |
35f5886e | 2150 | { |
de43d7d0 | 2151 | print_sys_errmsg (pi->pathname, errno); |
199b2450 | 2152 | printf_unfiltered ("PIOCSTATUS failed.\n"); |
35f5886e FF |
2153 | } |
2154 | else | |
2155 | { | |
de43d7d0 | 2156 | if (signal || (pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP))) |
35f5886e | 2157 | { |
de43d7d0 | 2158 | if (signal || !pi->was_stopped || |
35f5886e FF |
2159 | query ("Was stopped when attached, make it runnable again? ")) |
2160 | { | |
2592eef8 PS |
2161 | /* Clear any pending signal if we want to detach without |
2162 | a signal. */ | |
2163 | if (signal == 0) | |
2164 | set_proc_siginfo (pi, signal); | |
2165 | ||
ec8ceca3 | 2166 | /* Clear any fault that might have stopped it. */ |
de43d7d0 | 2167 | if (ioctl (pi->fd, PIOCCFAULT, 0)) |
eca4a350 SG |
2168 | { |
2169 | print_sys_errmsg (pi->pathname, errno); | |
199b2450 | 2170 | printf_unfiltered ("PIOCCFAULT failed.\n"); |
eca4a350 | 2171 | } |
ec8ceca3 JG |
2172 | |
2173 | /* Make it run again when we close it. */ | |
eca4a350 | 2174 | #if defined (PIOCSET) /* New method */ |
ec8ceca3 | 2175 | { |
eca4a350 SG |
2176 | long pr_flags; |
2177 | pr_flags = PR_RLC; | |
2178 | result = ioctl (pi->fd, PIOCSET, &pr_flags); | |
ec8ceca3 JG |
2179 | } |
2180 | #else | |
eca4a350 | 2181 | #if defined (PIOCSRLC) /* Original method */ |
de43d7d0 | 2182 | result = ioctl (pi->fd, PIOCSRLC, 0); |
ec8ceca3 JG |
2183 | #endif |
2184 | #endif | |
2185 | if (result) | |
35f5886e | 2186 | { |
de43d7d0 | 2187 | print_sys_errmsg (pi->pathname, errno); |
199b2450 | 2188 | printf_unfiltered ("PIOCSRLC or PIOCSET failed.\n"); |
35f5886e FF |
2189 | } |
2190 | } | |
2191 | } | |
2192 | } | |
de43d7d0 | 2193 | close_proc_file (pi); |
35f5886e FF |
2194 | attach_flag = 0; |
2195 | } | |
2196 | ||
45dc9be3 JK |
2197 | /* emulate wait() as much as possible. |
2198 | Wait for child to do something. Return pid of child, or -1 in case | |
2199 | of error; store status in *OURSTATUS. | |
2200 | ||
2201 | Not sure why we can't | |
2202 | just use wait(), but it seems to have problems when applied to a | |
2203 | process being controlled with the /proc interface. | |
2204 | ||
2205 | We have a race problem here with no obvious solution. We need to let | |
2206 | the inferior run until it stops on an event of interest, which means | |
2207 | that we need to use the PIOCWSTOP ioctl. However, we cannot use this | |
2208 | ioctl if the process is already stopped on something that is not an | |
2209 | event of interest, or the call will hang indefinitely. Thus we first | |
2210 | use PIOCSTATUS to see if the process is not stopped. If not, then we | |
2211 | use PIOCWSTOP. But during the window between the two, if the process | |
2212 | stops for any reason that is not an event of interest (such as a job | |
2213 | control signal) then gdb will hang. One possible workaround is to set | |
2214 | an alarm to wake up every minute of so and check to see if the process | |
2215 | is still running, and if so, then reissue the PIOCWSTOP. But this is | |
2216 | a real kludge, so has not been implemented. FIXME: investigate | |
2217 | alternatives. | |
2218 | ||
2219 | FIXME: Investigate why wait() seems to have problems with programs | |
2220 | being control by /proc routines. */ | |
35f5886e | 2221 | |
3fbdd536 | 2222 | static int |
45dc9be3 | 2223 | procfs_wait (pid, ourstatus) |
de43d7d0 | 2224 | int pid; |
67ac9759 | 2225 | struct target_waitstatus *ourstatus; |
35f5886e FF |
2226 | { |
2227 | short what; | |
2228 | short why; | |
2229 | int statval = 0; | |
2230 | int checkerr = 0; | |
2231 | int rtnval = -1; | |
de43d7d0 SG |
2232 | struct procinfo *pi; |
2233 | ||
2234 | if (pid != -1) /* Non-specific process? */ | |
2235 | pi = NULL; | |
2236 | else | |
2237 | for (pi = procinfo_list; pi; pi = pi->next) | |
2238 | if (pi->had_event) | |
2239 | break; | |
2240 | ||
de43d7d0 | 2241 | if (!pi) |
eca4a350 SG |
2242 | { |
2243 | wait_again: | |
2244 | ||
2245 | pi = wait_fd (); | |
2246 | } | |
de43d7d0 SG |
2247 | |
2248 | if (pid != -1) | |
2249 | for (pi = procinfo_list; pi; pi = pi->next) | |
2250 | if (pi->pid == pid && pi->had_event) | |
2251 | break; | |
2252 | ||
2253 | if (!pi && !checkerr) | |
2254 | goto wait_again; | |
2255 | ||
2256 | if (!checkerr && !(pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP))) | |
2257 | { | |
2258 | if (ioctl (pi->fd, PIOCWSTOP, &pi->prstatus) < 0) | |
2259 | { | |
2260 | checkerr++; | |
2261 | } | |
35f5886e FF |
2262 | } |
2263 | if (checkerr) | |
2264 | { | |
2265 | if (errno == ENOENT) | |
2266 | { | |
2267 | rtnval = wait (&statval); | |
2268 | if (rtnval != inferior_pid) | |
2269 | { | |
de43d7d0 | 2270 | print_sys_errmsg (pi->pathname, errno); |
35f5886e FF |
2271 | error ("PIOCWSTOP, wait failed, returned %d", rtnval); |
2272 | /* NOTREACHED */ | |
2273 | } | |
2274 | } | |
2275 | else | |
2276 | { | |
de43d7d0 | 2277 | print_sys_errmsg (pi->pathname, errno); |
35f5886e FF |
2278 | error ("PIOCSTATUS or PIOCWSTOP failed."); |
2279 | /* NOTREACHED */ | |
2280 | } | |
2281 | } | |
de43d7d0 | 2282 | else if (pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP)) |
35f5886e | 2283 | { |
de43d7d0 SG |
2284 | rtnval = pi->prstatus.pr_pid; |
2285 | why = pi->prstatus.pr_why; | |
2286 | what = pi->prstatus.pr_what; | |
2287 | ||
2288 | switch (why) | |
35f5886e | 2289 | { |
de43d7d0 | 2290 | case PR_SIGNALLED: |
35f5886e | 2291 | statval = (what << 8) | 0177; |
fb63d460 SG |
2292 | break; |
2293 | case PR_SYSENTRY: | |
2294 | if (what != SYS_exit) | |
2295 | error ("PR_SYSENTRY, unknown system call %d", what); | |
2296 | ||
2297 | pi->prrun.pr_flags = PRCFAULT; | |
2298 | ||
2299 | if (ioctl (pi->fd, PIOCRUN, &pi->prrun) != 0) | |
2300 | perror_with_name (pi->pathname); | |
2301 | ||
2302 | rtnval = wait (&statval); | |
2303 | ||
de43d7d0 SG |
2304 | break; |
2305 | case PR_SYSEXIT: | |
2306 | switch (what) | |
2307 | { | |
407a8389 | 2308 | #ifdef SYS_exec |
de43d7d0 | 2309 | case SYS_exec: |
407a8389 SG |
2310 | #endif |
2311 | #ifdef SYS_execve | |
de43d7d0 | 2312 | case SYS_execve: |
407a8389 SG |
2313 | #endif |
2314 | #ifdef SYS_execv | |
de43d7d0 | 2315 | case SYS_execv: |
407a8389 | 2316 | #endif |
de43d7d0 SG |
2317 | statval = (SIGTRAP << 8) | 0177; |
2318 | break; | |
2319 | #ifdef SYS_sproc | |
2320 | case SYS_sproc: | |
2321 | /* We've just detected the completion of an sproc system call. Now we need to | |
2322 | setup a procinfo struct for this thread, and notify the thread system of the | |
2323 | new arrival. */ | |
2324 | ||
2325 | /* If sproc failed, then nothing interesting happened. Continue the process and | |
2326 | go back to sleep. */ | |
2327 | ||
2328 | if (pi->prstatus.pr_errno != 0) | |
2329 | { | |
2330 | pi->prrun.pr_flags &= PRSTEP; | |
2331 | pi->prrun.pr_flags |= PRCFAULT; | |
2332 | ||
2333 | if (ioctl (pi->fd, PIOCRUN, &pi->prrun) != 0) | |
2334 | perror_with_name (pi->pathname); | |
2335 | ||
2336 | goto wait_again; | |
2337 | } | |
2338 | ||
2339 | /* At this point, the new thread is stopped at it's first instruction, and | |
2340 | the parent is stopped at the exit from sproc. */ | |
2341 | ||
2342 | /* Notify the caller of the arrival of a new thread. */ | |
2343 | create_procinfo (pi->prstatus.pr_rval1); | |
2344 | ||
2345 | rtnval = pi->prstatus.pr_rval1; | |
2346 | statval = (SIGTRAP << 8) | 0177; | |
2347 | ||
2348 | break; | |
eca4a350 SG |
2349 | case SYS_fork: |
2350 | #ifdef SYS_vfork | |
2351 | case SYS_vfork: | |
2352 | #endif | |
2353 | /* At this point, we've detected the completion of a fork (or vfork) call in | |
2354 | our child. The grandchild is also stopped because we set inherit-on-fork | |
2355 | earlier. (Note that nobody has the grandchilds' /proc file open at this | |
2356 | point.) We will release the grandchild from the debugger by opening it's | |
2357 | /proc file and then closing it. Since run-on-last-close is set, the | |
2358 | grandchild continues on its' merry way. */ | |
2359 | ||
2360 | { | |
2361 | struct procinfo *pitemp; | |
2362 | ||
2363 | pitemp = create_procinfo (pi->prstatus.pr_rval1); | |
2364 | if (pitemp) | |
2365 | close_proc_file (pitemp); | |
2366 | ||
2367 | if (ioctl (pi->fd, PIOCRUN, &pi->prrun) != 0) | |
2368 | perror_with_name (pi->pathname); | |
2369 | } | |
2370 | goto wait_again; | |
de43d7d0 SG |
2371 | #endif /* SYS_sproc */ |
2372 | ||
2373 | default: | |
2374 | error ("PIOCSTATUS (PR_SYSEXIT): Unknown system call %d", what); | |
2375 | } | |
2376 | break; | |
2377 | case PR_REQUESTED: | |
35f5886e | 2378 | statval = (SIGSTOP << 8) | 0177; |
de43d7d0 SG |
2379 | break; |
2380 | case PR_JOBCONTROL: | |
35f5886e | 2381 | statval = (what << 8) | 0177; |
de43d7d0 SG |
2382 | break; |
2383 | case PR_FAULTED: | |
35f5886e FF |
2384 | switch (what) |
2385 | { | |
e6b8a171 | 2386 | #ifdef FLTWATCH |
999dd04b | 2387 | case FLTWATCH: |
e6b8a171 JL |
2388 | statval = (SIGTRAP << 8) | 0177; |
2389 | break; | |
2390 | #endif | |
2391 | #ifdef FLTKWATCH | |
999dd04b | 2392 | case FLTKWATCH: |
35f5886e FF |
2393 | statval = (SIGTRAP << 8) | 0177; |
2394 | break; | |
e6b8a171 | 2395 | #endif |
3f5e2fb5 JK |
2396 | #ifndef FAULTED_USE_SIGINFO |
2397 | /* Irix, contrary to the documentation, fills in 0 for si_signo. | |
2398 | Solaris fills in si_signo. I'm not sure about others. */ | |
2399 | case FLTPRIV: | |
2400 | case FLTILL: | |
2401 | statval = (SIGILL << 8) | 0177; | |
2402 | break; | |
2403 | case FLTBPT: | |
2404 | case FLTTRACE: | |
2405 | statval = (SIGTRAP << 8) | 0177; | |
2406 | break; | |
2407 | case FLTSTACK: | |
2408 | case FLTACCESS: | |
2409 | case FLTBOUNDS: | |
2410 | statval = (SIGSEGV << 8) | 0177; | |
2411 | break; | |
2412 | case FLTIOVF: | |
2413 | case FLTIZDIV: | |
2414 | case FLTFPE: | |
2415 | statval = (SIGFPE << 8) | 0177; | |
2416 | break; | |
2417 | case FLTPAGE: /* Recoverable page fault */ | |
2418 | #endif /* not FAULTED_USE_SIGINFO */ | |
35f5886e | 2419 | default: |
890634ed JK |
2420 | /* Use the signal which the kernel assigns. This is better than |
2421 | trying to second-guess it from the fault. In fact, I suspect | |
2422 | that FLTACCESS can be either SIGSEGV or SIGBUS. */ | |
2423 | statval = ((pi->prstatus.pr_info.si_signo) << 8) | 0177; | |
2424 | break; | |
35f5886e | 2425 | } |
de43d7d0 SG |
2426 | break; |
2427 | default: | |
35f5886e | 2428 | error ("PIOCWSTOP, unknown why %d, what %d", why, what); |
35f5886e | 2429 | } |
de43d7d0 SG |
2430 | /* Stop all the other threads when any of them stops. */ |
2431 | ||
2432 | { | |
2433 | struct procinfo *procinfo; | |
2434 | ||
2435 | for (procinfo = procinfo_list; procinfo; procinfo = procinfo->next) | |
2436 | { | |
2437 | if (!procinfo->had_event) | |
2438 | if (ioctl (procinfo->fd, PIOCSTOP, &procinfo->prstatus) < 0) | |
2439 | { | |
2440 | print_sys_errmsg (procinfo->pathname, errno); | |
2441 | error ("PIOCSTOP failed"); | |
2442 | } | |
2443 | } | |
2444 | } | |
35f5886e FF |
2445 | } |
2446 | else | |
2447 | { | |
2448 | error ("PIOCWSTOP, stopped for unknown/unhandled reason, flags %#x", | |
de43d7d0 | 2449 | pi->prstatus.pr_flags); |
35f5886e | 2450 | } |
3fbdd536 | 2451 | |
67ac9759 | 2452 | store_waitstatus (ourstatus, statval); |
3fbdd536 JG |
2453 | |
2454 | if (rtnval == -1) /* No more children to wait for */ | |
2455 | { | |
199b2450 | 2456 | fprintf_unfiltered (gdb_stderr, "Child process unexpectedly missing.\n"); |
67ac9759 JK |
2457 | /* Claim it exited with unknown signal. */ |
2458 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
2459 | ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN; | |
3fbdd536 JG |
2460 | return rtnval; |
2461 | } | |
2462 | ||
de43d7d0 | 2463 | pi->had_event = 0; /* Indicate that we've seen this one */ |
35f5886e FF |
2464 | return (rtnval); |
2465 | } | |
2466 | ||
2467 | /* | |
2468 | ||
6b801388 FF |
2469 | LOCAL FUNCTION |
2470 | ||
2471 | set_proc_siginfo - set a process's current signal info | |
2472 | ||
2473 | SYNOPSIS | |
2474 | ||
2475 | void set_proc_siginfo (struct procinfo *pip, int signo); | |
2476 | ||
2477 | DESCRIPTION | |
2478 | ||
2479 | Given a pointer to a process info struct in PIP and a signal number | |
2480 | in SIGNO, set the process's current signal and its associated signal | |
2481 | information. The signal will be delivered to the process immediately | |
2482 | after execution is resumed, even if it is being held. In addition, | |
2483 | this particular delivery will not cause another PR_SIGNALLED stop | |
2484 | even if the signal is being traced. | |
2485 | ||
2486 | If we are not delivering the same signal that the prstatus siginfo | |
2487 | struct contains information about, then synthesize a siginfo struct | |
2488 | to match the signal we are doing to deliver, make it of the type | |
2489 | "generated by a user process", and send this synthesized copy. When | |
2490 | used to set the inferior's signal state, this will be required if we | |
2491 | are not currently stopped because of a traced signal, or if we decide | |
2492 | to continue with a different signal. | |
2493 | ||
2494 | Note that when continuing the inferior from a stop due to receipt | |
2495 | of a traced signal, we either have set PRCSIG to clear the existing | |
2496 | signal, or we have to call this function to do a PIOCSSIG with either | |
2497 | the existing siginfo struct from pr_info, or one we have synthesized | |
2498 | appropriately for the signal we want to deliver. Otherwise if the | |
2499 | signal is still being traced, the inferior will immediately stop | |
2500 | again. | |
2501 | ||
2502 | See siginfo(5) for more details. | |
2503 | */ | |
2504 | ||
2505 | static void | |
2506 | set_proc_siginfo (pip, signo) | |
cc221e76 FF |
2507 | struct procinfo *pip; |
2508 | int signo; | |
6b801388 FF |
2509 | { |
2510 | struct siginfo newsiginfo; | |
2511 | struct siginfo *sip; | |
2512 | ||
2592eef8 PS |
2513 | #ifdef PROCFS_DONT_PIOCSSIG_CURSIG |
2514 | /* With Alpha OSF/1 procfs, the kernel gets really confused if it | |
a1a0d974 | 2515 | receives a PIOCSSIG with a signal identical to the current signal, |
2592eef8 PS |
2516 | it messes up the current signal. Work around the kernel bug. */ |
2517 | if (signo == pip -> prstatus.pr_cursig) | |
2518 | return; | |
2519 | #endif | |
2520 | ||
de43d7d0 | 2521 | if (signo == pip -> prstatus.pr_info.si_signo) |
6b801388 | 2522 | { |
de43d7d0 SG |
2523 | sip = &pip -> prstatus.pr_info; |
2524 | } | |
2525 | else | |
2526 | { | |
2527 | memset ((char *) &newsiginfo, 0, sizeof (newsiginfo)); | |
2528 | sip = &newsiginfo; | |
2529 | sip -> si_signo = signo; | |
2530 | sip -> si_code = 0; | |
2531 | sip -> si_errno = 0; | |
2532 | sip -> si_pid = getpid (); | |
2533 | sip -> si_uid = getuid (); | |
2534 | } | |
2535 | if (ioctl (pip -> fd, PIOCSSIG, sip) < 0) | |
2536 | { | |
2537 | print_sys_errmsg (pip -> pathname, errno); | |
2538 | warning ("PIOCSSIG failed"); | |
6b801388 FF |
2539 | } |
2540 | } | |
2541 | ||
25286543 | 2542 | /* Resume execution of process PID. If STEP is nozero, then |
59ba57da JK |
2543 | just single step it. If SIGNAL is nonzero, restart it with that |
2544 | signal activated. */ | |
35f5886e | 2545 | |
3fbdd536 | 2546 | static void |
25286543 SG |
2547 | procfs_resume (pid, step, signo) |
2548 | int pid; | |
1ab3bf1b | 2549 | int step; |
67ac9759 | 2550 | enum target_signal signo; |
35f5886e | 2551 | { |
59ba57da | 2552 | int signal_to_pass; |
de43d7d0 SG |
2553 | struct procinfo *pi, *procinfo; |
2554 | ||
2555 | pi = find_procinfo (pid == -1 ? inferior_pid : pid, 0); | |
59ba57da | 2556 | |
35f5886e | 2557 | errno = 0; |
de43d7d0 | 2558 | pi->prrun.pr_flags = PRSTRACE | PRSFAULT | PRCFAULT; |
99fd9e3e | 2559 | |
59ba57da JK |
2560 | #if 0 |
2561 | /* It should not be necessary. If the user explicitly changes the value, | |
2562 | value_assign calls write_register_bytes, which writes it. */ | |
2563 | /* It may not be absolutely necessary to specify the PC value for | |
2564 | restarting, but to be safe we use the value that gdb considers | |
2565 | to be current. One case where this might be necessary is if the | |
2566 | user explicitly changes the PC value that gdb considers to be | |
2567 | current. FIXME: Investigate if this is necessary or not. */ | |
2568 | ||
c3192172 | 2569 | #ifdef PRSVADDR_BROKEN |
99fd9e3e SG |
2570 | /* Can't do this under Solaris running on a Sparc, as there seems to be no |
2571 | place to put nPC. In fact, if you use this, nPC seems to be set to some | |
2572 | random garbage. We have to rely on the fact that PC and nPC have been | |
2573 | written previously via PIOCSREG during a register flush. */ | |
2574 | ||
de43d7d0 SG |
2575 | pi->prrun.pr_vaddr = (caddr_t) *(int *) ®isters[REGISTER_BYTE (PC_REGNUM)]; |
2576 | pi->prrun.pr_flags != PRSVADDR; | |
99fd9e3e | 2577 | #endif |
59ba57da JK |
2578 | #endif |
2579 | ||
67ac9759 | 2580 | if (signo == TARGET_SIGNAL_STOP && pi->nopass_next_sigstop) |
59ba57da JK |
2581 | /* When attaching to a child process, if we forced it to stop with |
2582 | a PIOCSTOP, then we will have set the nopass_next_sigstop flag. | |
2583 | Upon resuming the first time after such a stop, we explicitly | |
2584 | inhibit sending it another SIGSTOP, which would be the normal | |
2585 | result of default signal handling. One potential drawback to | |
2586 | this is that we will also ignore any attempt to by the user | |
2587 | to explicitly continue after the attach with a SIGSTOP. Ultimately | |
2588 | this problem should be dealt with by making the routines that | |
2589 | deal with the inferior a little smarter, and possibly even allow | |
2590 | an inferior to continue running at the same time as gdb. (FIXME?) */ | |
2591 | signal_to_pass = 0; | |
67ac9759 | 2592 | else if (signo == TARGET_SIGNAL_TSTP |
de43d7d0 SG |
2593 | && pi->prstatus.pr_cursig == SIGTSTP |
2594 | && pi->prstatus.pr_action.sa_handler == SIG_DFL) | |
59ba57da JK |
2595 | |
2596 | /* We are about to pass the inferior a SIGTSTP whose action is | |
2597 | SIG_DFL. The SIG_DFL action for a SIGTSTP is to stop | |
2598 | (notifying the parent via wait()), and then keep going from the | |
2599 | same place when the parent is ready for you to keep going. So | |
2600 | under the debugger, it should do nothing (as if the program had | |
2601 | been stopped and then later resumed. Under ptrace, this | |
2602 | happens for us, but under /proc, the system obligingly stops | |
2603 | the process, and wait_for_inferior would have no way of | |
2604 | distinguishing that type of stop (which indicates that we | |
2605 | should just start it again), with a stop due to the pr_trace | |
2606 | field of the prrun_t struct. | |
2607 | ||
2608 | Note that if the SIGTSTP is being caught, we *do* need to pass it, | |
2609 | because the handler needs to get executed. */ | |
2610 | signal_to_pass = 0; | |
2611 | else | |
67ac9759 | 2612 | signal_to_pass = target_signal_to_host (signo); |
99fd9e3e | 2613 | |
59ba57da | 2614 | if (signal_to_pass) |
35f5886e | 2615 | { |
de43d7d0 | 2616 | set_proc_siginfo (pi, signal_to_pass); |
35f5886e FF |
2617 | } |
2618 | else | |
2619 | { | |
de43d7d0 | 2620 | pi->prrun.pr_flags |= PRCSIG; |
35f5886e | 2621 | } |
de43d7d0 | 2622 | pi->nopass_next_sigstop = 0; |
35f5886e FF |
2623 | if (step) |
2624 | { | |
de43d7d0 | 2625 | pi->prrun.pr_flags |= PRSTEP; |
35f5886e | 2626 | } |
de43d7d0 | 2627 | if (ioctl (pi->fd, PIOCRUN, &pi->prrun) != 0) |
35f5886e | 2628 | { |
de43d7d0 | 2629 | perror_with_name (pi->pathname); |
35f5886e FF |
2630 | /* NOTREACHED */ |
2631 | } | |
de43d7d0 SG |
2632 | |
2633 | pi->had_event = 0; | |
2634 | ||
2635 | /* Continue all the other threads that haven't had an event of | |
2636 | interest. */ | |
2637 | ||
2638 | if (pid == -1) | |
2639 | for (procinfo = procinfo_list; procinfo; procinfo = procinfo->next) | |
2640 | { | |
2641 | if (pi != procinfo && !procinfo->had_event) | |
2642 | { | |
2643 | procinfo->prrun.pr_flags &= PRSTEP; | |
2644 | procinfo->prrun.pr_flags |= PRCFAULT | PRCSIG; | |
2645 | ioctl (procinfo->fd, PIOCSTATUS, &procinfo->prstatus); | |
2646 | if (ioctl (procinfo->fd, PIOCRUN, &procinfo->prrun) < 0) | |
2647 | { | |
2648 | if (ioctl (procinfo->fd, PIOCSTATUS, &procinfo->prstatus) < 0) | |
2649 | { | |
199b2450 | 2650 | fprintf_unfiltered(gdb_stderr, "PIOCSTATUS failed, errno=%d\n", errno); |
de43d7d0 SG |
2651 | } |
2652 | print_sys_errmsg (procinfo->pathname, errno); | |
2653 | error ("PIOCRUN failed"); | |
2654 | } | |
2655 | ioctl (procinfo->fd, PIOCSTATUS, &procinfo->prstatus); | |
2656 | } | |
2657 | } | |
35f5886e FF |
2658 | } |
2659 | ||
2660 | /* | |
2661 | ||
3fbdd536 | 2662 | LOCAL FUNCTION |
35f5886e | 2663 | |
3fbdd536 | 2664 | procfs_fetch_registers -- fetch current registers from inferior |
35f5886e FF |
2665 | |
2666 | SYNOPSIS | |
2667 | ||
3fbdd536 | 2668 | void procfs_fetch_registers (int regno) |
35f5886e FF |
2669 | |
2670 | DESCRIPTION | |
2671 | ||
2672 | Read the current values of the inferior's registers, both the | |
2673 | general register set and floating point registers (if supported) | |
2674 | and update gdb's idea of their current values. | |
2675 | ||
2676 | */ | |
2677 | ||
3fbdd536 JG |
2678 | static void |
2679 | procfs_fetch_registers (regno) | |
1ab3bf1b | 2680 | int regno; |
35f5886e | 2681 | { |
de43d7d0 SG |
2682 | struct procinfo *pi; |
2683 | ||
2684 | pi = current_procinfo; | |
2685 | ||
2686 | if (ioctl (pi->fd, PIOCGREG, &pi->gregset) != -1) | |
35f5886e | 2687 | { |
de43d7d0 | 2688 | supply_gregset (&pi->gregset); |
35f5886e FF |
2689 | } |
2690 | #if defined (FP0_REGNUM) | |
de43d7d0 | 2691 | if (ioctl (pi->fd, PIOCGFPREG, &pi->fpregset) != -1) |
35f5886e | 2692 | { |
de43d7d0 | 2693 | supply_fpregset (&pi->fpregset); |
35f5886e FF |
2694 | } |
2695 | #endif | |
2696 | } | |
2697 | ||
fb182850 FF |
2698 | /* |
2699 | ||
35f5886e FF |
2700 | LOCAL FUNCTION |
2701 | ||
de43d7d0 SG |
2702 | proc_init_failed - called whenever /proc access initialization |
2703 | fails | |
35f5886e FF |
2704 | |
2705 | SYNOPSIS | |
2706 | ||
de43d7d0 | 2707 | static void proc_init_failed (struct procinfo *pi, char *why) |
35f5886e FF |
2708 | |
2709 | DESCRIPTION | |
2710 | ||
2711 | This function is called whenever initialization of access to a /proc | |
2712 | entry fails. It prints a suitable error message, does some cleanup, | |
2713 | and then invokes the standard error processing routine which dumps | |
2714 | us back into the command loop. | |
2715 | */ | |
2716 | ||
2717 | static void | |
de43d7d0 SG |
2718 | proc_init_failed (pi, why) |
2719 | struct procinfo *pi; | |
1ab3bf1b | 2720 | char *why; |
35f5886e | 2721 | { |
de43d7d0 SG |
2722 | print_sys_errmsg (pi->pathname, errno); |
2723 | kill (pi->pid, SIGKILL); | |
2724 | close_proc_file (pi); | |
35f5886e FF |
2725 | error (why); |
2726 | /* NOTREACHED */ | |
2727 | } | |
2728 | ||
2729 | /* | |
2730 | ||
2731 | LOCAL FUNCTION | |
2732 | ||
2733 | close_proc_file - close any currently open /proc entry | |
2734 | ||
2735 | SYNOPSIS | |
2736 | ||
a39ad5ce | 2737 | static void close_proc_file (struct procinfo *pip) |
35f5886e FF |
2738 | |
2739 | DESCRIPTION | |
2740 | ||
2741 | Close any currently open /proc entry and mark the process information | |
2742 | entry as invalid. In order to ensure that we don't try to reuse any | |
2743 | stale information, the pid, fd, and pathnames are explicitly | |
2744 | invalidated, which may be overkill. | |
2745 | ||
2746 | */ | |
2747 | ||
2748 | static void | |
1ab3bf1b JG |
2749 | close_proc_file (pip) |
2750 | struct procinfo *pip; | |
35f5886e | 2751 | { |
de43d7d0 SG |
2752 | struct procinfo *procinfo; |
2753 | ||
2754 | remove_fd (pip); /* Remove fd from poll/select list */ | |
2755 | ||
2756 | close (pip -> fd); | |
2757 | ||
2758 | free (pip -> pathname); | |
2759 | ||
2760 | /* Unlink pip from the procinfo chain. Note pip might not be on the list. */ | |
2761 | ||
2762 | if (procinfo_list == pip) | |
2763 | procinfo_list = pip->next; | |
2764 | else | |
2765 | for (procinfo = procinfo_list; procinfo; procinfo = procinfo->next) | |
2766 | if (procinfo->next == pip) | |
2767 | procinfo->next = pip->next; | |
2768 | ||
2769 | free (pip); | |
35f5886e FF |
2770 | } |
2771 | ||
2772 | /* | |
2773 | ||
2774 | LOCAL FUNCTION | |
2775 | ||
2776 | open_proc_file - open a /proc entry for a given process id | |
2777 | ||
2778 | SYNOPSIS | |
2779 | ||
ec8ceca3 | 2780 | static int open_proc_file (int pid, struct procinfo *pip, int mode) |
35f5886e FF |
2781 | |
2782 | DESCRIPTION | |
2783 | ||
ec8ceca3 JG |
2784 | Given a process id and a mode, close the existing open /proc |
2785 | entry (if any) and open one for the new process id, in the | |
2786 | specified mode. Once it is open, then mark the local process | |
2787 | information structure as valid, which guarantees that the pid, | |
2788 | fd, and pathname fields match an open /proc entry. Returns | |
2789 | zero if the open fails, nonzero otherwise. | |
35f5886e FF |
2790 | |
2791 | Note that the pathname is left intact, even when the open fails, | |
2792 | so that callers can use it to construct meaningful error messages | |
2793 | rather than just "file open failed". | |
2794 | */ | |
2795 | ||
2796 | static int | |
ec8ceca3 | 2797 | open_proc_file (pid, pip, mode) |
1ab3bf1b JG |
2798 | int pid; |
2799 | struct procinfo *pip; | |
ec8ceca3 | 2800 | int mode; |
35f5886e | 2801 | { |
de43d7d0 SG |
2802 | pip -> next = NULL; |
2803 | pip -> had_event = 0; | |
2804 | pip -> pathname = xmalloc (32); | |
2805 | pip -> pid = pid; | |
2806 | ||
a39ad5ce | 2807 | sprintf (pip -> pathname, PROC_NAME_FMT, pid); |
de43d7d0 SG |
2808 | if ((pip -> fd = open (pip -> pathname, mode)) < 0) |
2809 | return 0; | |
2810 | ||
2811 | return 1; | |
a39ad5ce FF |
2812 | } |
2813 | ||
f66f459f | 2814 | static char * |
1ab3bf1b JG |
2815 | mappingflags (flags) |
2816 | long flags; | |
a39ad5ce | 2817 | { |
5c1c5e67 | 2818 | static char asciiflags[8]; |
a39ad5ce | 2819 | |
5c1c5e67 FF |
2820 | strcpy (asciiflags, "-------"); |
2821 | #if defined (MA_PHYS) | |
2822 | if (flags & MA_PHYS) asciiflags[0] = 'd'; | |
2823 | #endif | |
2824 | if (flags & MA_STACK) asciiflags[1] = 's'; | |
2825 | if (flags & MA_BREAK) asciiflags[2] = 'b'; | |
2826 | if (flags & MA_SHARED) asciiflags[3] = 's'; | |
2827 | if (flags & MA_READ) asciiflags[4] = 'r'; | |
2828 | if (flags & MA_WRITE) asciiflags[5] = 'w'; | |
2829 | if (flags & MA_EXEC) asciiflags[6] = 'x'; | |
a39ad5ce FF |
2830 | return (asciiflags); |
2831 | } | |
2832 | ||
2833 | static void | |
cc221e76 FF |
2834 | info_proc_flags (pip, summary) |
2835 | struct procinfo *pip; | |
2836 | int summary; | |
2837 | { | |
2838 | struct trans *transp; | |
2839 | ||
2840 | printf_filtered ("%-32s", "Process status flags:"); | |
2841 | if (!summary) | |
2842 | { | |
2843 | printf_filtered ("\n\n"); | |
2844 | } | |
2845 | for (transp = pr_flag_table; transp -> name != NULL; transp++) | |
2846 | { | |
2847 | if (pip -> prstatus.pr_flags & transp -> value) | |
2848 | { | |
2849 | if (summary) | |
2850 | { | |
2851 | printf_filtered ("%s ", transp -> name); | |
2852 | } | |
2853 | else | |
2854 | { | |
2855 | printf_filtered ("\t%-16s %s.\n", transp -> name, transp -> desc); | |
2856 | } | |
2857 | } | |
2858 | } | |
2859 | printf_filtered ("\n"); | |
2860 | } | |
2861 | ||
2862 | static void | |
2863 | info_proc_stop (pip, summary) | |
2864 | struct procinfo *pip; | |
2865 | int summary; | |
2866 | { | |
2867 | struct trans *transp; | |
2868 | int why; | |
2869 | int what; | |
2870 | ||
2871 | why = pip -> prstatus.pr_why; | |
2872 | what = pip -> prstatus.pr_what; | |
2873 | ||
2874 | if (pip -> prstatus.pr_flags & PR_STOPPED) | |
2875 | { | |
2876 | printf_filtered ("%-32s", "Reason for stopping:"); | |
2877 | if (!summary) | |
2878 | { | |
2879 | printf_filtered ("\n\n"); | |
2880 | } | |
2881 | for (transp = pr_why_table; transp -> name != NULL; transp++) | |
2882 | { | |
2883 | if (why == transp -> value) | |
2884 | { | |
2885 | if (summary) | |
2886 | { | |
2887 | printf_filtered ("%s ", transp -> name); | |
2888 | } | |
2889 | else | |
2890 | { | |
2891 | printf_filtered ("\t%-16s %s.\n", | |
2892 | transp -> name, transp -> desc); | |
2893 | } | |
2894 | break; | |
2895 | } | |
2896 | } | |
2897 | ||
2898 | /* Use the pr_why field to determine what the pr_what field means, and | |
2899 | print more information. */ | |
2900 | ||
2901 | switch (why) | |
2902 | { | |
2903 | case PR_REQUESTED: | |
2904 | /* pr_what is unused for this case */ | |
2905 | break; | |
2906 | case PR_JOBCONTROL: | |
2907 | case PR_SIGNALLED: | |
2908 | if (summary) | |
2909 | { | |
2910 | printf_filtered ("%s ", signalname (what)); | |
2911 | } | |
2912 | else | |
2913 | { | |
2914 | printf_filtered ("\t%-16s %s.\n", signalname (what), | |
4ace50a5 | 2915 | safe_strsignal (what)); |
cc221e76 FF |
2916 | } |
2917 | break; | |
2918 | case PR_SYSENTRY: | |
2919 | if (summary) | |
2920 | { | |
2921 | printf_filtered ("%s ", syscallname (what)); | |
2922 | } | |
2923 | else | |
2924 | { | |
2925 | printf_filtered ("\t%-16s %s.\n", syscallname (what), | |
2926 | "Entered this system call"); | |
2927 | } | |
2928 | break; | |
2929 | case PR_SYSEXIT: | |
2930 | if (summary) | |
2931 | { | |
2932 | printf_filtered ("%s ", syscallname (what)); | |
2933 | } | |
2934 | else | |
2935 | { | |
2936 | printf_filtered ("\t%-16s %s.\n", syscallname (what), | |
2937 | "Returned from this system call"); | |
2938 | } | |
2939 | break; | |
2940 | case PR_FAULTED: | |
2941 | if (summary) | |
2942 | { | |
2943 | printf_filtered ("%s ", | |
2944 | lookupname (faults_table, what, "fault")); | |
2945 | } | |
2946 | else | |
2947 | { | |
2948 | printf_filtered ("\t%-16s %s.\n", | |
2949 | lookupname (faults_table, what, "fault"), | |
2950 | lookupdesc (faults_table, what)); | |
2951 | } | |
2952 | break; | |
2953 | } | |
2954 | printf_filtered ("\n"); | |
2955 | } | |
2956 | } | |
2957 | ||
2958 | static void | |
2959 | info_proc_siginfo (pip, summary) | |
2960 | struct procinfo *pip; | |
2961 | int summary; | |
2962 | { | |
2963 | struct siginfo *sip; | |
2964 | ||
2965 | if ((pip -> prstatus.pr_flags & PR_STOPPED) && | |
2966 | (pip -> prstatus.pr_why == PR_SIGNALLED || | |
2967 | pip -> prstatus.pr_why == PR_FAULTED)) | |
2968 | { | |
2969 | printf_filtered ("%-32s", "Additional signal/fault info:"); | |
2970 | sip = &pip -> prstatus.pr_info; | |
2971 | if (summary) | |
2972 | { | |
2973 | printf_filtered ("%s ", signalname (sip -> si_signo)); | |
2974 | if (sip -> si_errno > 0) | |
2975 | { | |
4ace50a5 | 2976 | printf_filtered ("%s ", errnoname (sip -> si_errno)); |
cc221e76 FF |
2977 | } |
2978 | if (sip -> si_code <= 0) | |
2979 | { | |
25286543 SG |
2980 | printf_filtered ("sent by %s, uid %d ", |
2981 | target_pid_to_str (sip -> si_pid), | |
cc221e76 FF |
2982 | sip -> si_uid); |
2983 | } | |
2984 | else | |
2985 | { | |
2986 | printf_filtered ("%s ", sigcodename (sip)); | |
2987 | if ((sip -> si_signo == SIGILL) || | |
2988 | (sip -> si_signo == SIGFPE) || | |
2989 | (sip -> si_signo == SIGSEGV) || | |
2990 | (sip -> si_signo == SIGBUS)) | |
2991 | { | |
b9e58503 PS |
2992 | printf_filtered ("addr=%#lx ", |
2993 | (unsigned long) sip -> si_addr); | |
cc221e76 FF |
2994 | } |
2995 | else if ((sip -> si_signo == SIGCHLD)) | |
2996 | { | |
25286543 SG |
2997 | printf_filtered ("child %s, status %u ", |
2998 | target_pid_to_str (sip -> si_pid), | |
cc221e76 FF |
2999 | sip -> si_status); |
3000 | } | |
3001 | else if ((sip -> si_signo == SIGPOLL)) | |
3002 | { | |
3003 | printf_filtered ("band %u ", sip -> si_band); | |
3004 | } | |
3005 | } | |
3006 | } | |
3007 | else | |
3008 | { | |
3009 | printf_filtered ("\n\n"); | |
3010 | printf_filtered ("\t%-16s %s.\n", signalname (sip -> si_signo), | |
4ace50a5 | 3011 | safe_strsignal (sip -> si_signo)); |
cc221e76 FF |
3012 | if (sip -> si_errno > 0) |
3013 | { | |
3014 | printf_filtered ("\t%-16s %s.\n", | |
4ace50a5 FF |
3015 | errnoname (sip -> si_errno), |
3016 | safe_strerror (sip -> si_errno)); | |
cc221e76 FF |
3017 | } |
3018 | if (sip -> si_code <= 0) | |
3019 | { | |
25286543 | 3020 | printf_filtered ("\t%-16u %s\n", sip -> si_pid, /* XXX need target_pid_to_str() */ |
cc221e76 FF |
3021 | "PID of process sending signal"); |
3022 | printf_filtered ("\t%-16u %s\n", sip -> si_uid, | |
3023 | "UID of process sending signal"); | |
3024 | } | |
3025 | else | |
3026 | { | |
3027 | printf_filtered ("\t%-16s %s.\n", sigcodename (sip), | |
3028 | sigcodedesc (sip)); | |
3029 | if ((sip -> si_signo == SIGILL) || | |
3030 | (sip -> si_signo == SIGFPE)) | |
3031 | { | |
b9e58503 PS |
3032 | printf_filtered ("\t%#-16lx %s.\n", |
3033 | (unsigned long) sip -> si_addr, | |
cc221e76 FF |
3034 | "Address of faulting instruction"); |
3035 | } | |
3036 | else if ((sip -> si_signo == SIGSEGV) || | |
3037 | (sip -> si_signo == SIGBUS)) | |
3038 | { | |
b9e58503 PS |
3039 | printf_filtered ("\t%#-16lx %s.\n", |
3040 | (unsigned long) sip -> si_addr, | |
cc221e76 FF |
3041 | "Address of faulting memory reference"); |
3042 | } | |
3043 | else if ((sip -> si_signo == SIGCHLD)) | |
3044 | { | |
25286543 | 3045 | printf_filtered ("\t%-16u %s.\n", sip -> si_pid, /* XXX need target_pid_to_str() */ |
cc221e76 FF |
3046 | "Child process ID"); |
3047 | printf_filtered ("\t%-16u %s.\n", sip -> si_status, | |
3048 | "Child process exit value or signal"); | |
3049 | } | |
3050 | else if ((sip -> si_signo == SIGPOLL)) | |
3051 | { | |
3052 | printf_filtered ("\t%-16u %s.\n", sip -> si_band, | |
3053 | "Band event for POLL_{IN,OUT,MSG}"); | |
3054 | } | |
3055 | } | |
3056 | } | |
3057 | printf_filtered ("\n"); | |
3058 | } | |
3059 | } | |
3060 | ||
3061 | static void | |
3062 | info_proc_syscalls (pip, summary) | |
3063 | struct procinfo *pip; | |
3064 | int summary; | |
3065 | { | |
3066 | int syscallnum; | |
3067 | ||
3068 | if (!summary) | |
3069 | { | |
3070 | ||
3071 | #if 0 /* FIXME: Needs to use gdb-wide configured info about system calls. */ | |
3072 | if (pip -> prstatus.pr_flags & PR_ASLEEP) | |
3073 | { | |
3074 | int syscallnum = pip -> prstatus.pr_reg[R_D0]; | |
3075 | if (summary) | |
3076 | { | |
3077 | printf_filtered ("%-32s", "Sleeping in system call:"); | |
3078 | printf_filtered ("%s", syscallname (syscallnum)); | |
3079 | } | |
3080 | else | |
3081 | { | |
3082 | printf_filtered ("Sleeping in system call '%s'.\n", | |
3083 | syscallname (syscallnum)); | |
3084 | } | |
3085 | } | |
3086 | #endif | |
3087 | ||
3088 | if (ioctl (pip -> fd, PIOCGENTRY, &pip -> entryset) < 0) | |
3089 | { | |
3090 | print_sys_errmsg (pip -> pathname, errno); | |
3091 | error ("PIOCGENTRY failed"); | |
3092 | } | |
3093 | ||
3094 | if (ioctl (pip -> fd, PIOCGEXIT, &pip -> exitset) < 0) | |
3095 | { | |
3096 | print_sys_errmsg (pip -> pathname, errno); | |
3097 | error ("PIOCGEXIT failed"); | |
3098 | } | |
3099 | ||
3100 | printf_filtered ("System call tracing information:\n\n"); | |
3101 | ||
3102 | printf_filtered ("\t%-12s %-8s %-8s\n", | |
3103 | "System call", | |
3104 | "Entry", | |
3105 | "Exit"); | |
3106 | for (syscallnum = 0; syscallnum < MAX_SYSCALLS; syscallnum++) | |
3107 | { | |
3108 | QUIT; | |
3109 | if (syscall_table[syscallnum] != NULL) | |
3110 | { | |
3111 | printf_filtered ("\t%-12s ", syscall_table[syscallnum]); | |
3112 | printf_filtered ("%-8s ", | |
3113 | prismember (&pip -> entryset, syscallnum) | |
3114 | ? "on" : "off"); | |
3115 | printf_filtered ("%-8s ", | |
3116 | prismember (&pip -> exitset, syscallnum) | |
3117 | ? "on" : "off"); | |
3118 | printf_filtered ("\n"); | |
3119 | } | |
3120 | } | |
3121 | printf_filtered ("\n"); | |
3122 | } | |
3123 | } | |
3124 | ||
3125 | static char * | |
3126 | signalname (signo) | |
3127 | int signo; | |
3128 | { | |
26a859ec | 3129 | const char *name; |
4ace50a5 FF |
3130 | static char locbuf[32]; |
3131 | ||
3132 | name = strsigno (signo); | |
3133 | if (name == NULL) | |
3134 | { | |
3135 | sprintf (locbuf, "Signal %d", signo); | |
3136 | } | |
3137 | else | |
3138 | { | |
3139 | sprintf (locbuf, "%s (%d)", name, signo); | |
3140 | } | |
3141 | return (locbuf); | |
3142 | } | |
3143 | ||
3144 | static char * | |
3145 | errnoname (errnum) | |
3146 | int errnum; | |
3147 | { | |
26a859ec | 3148 | const char *name; |
cc221e76 FF |
3149 | static char locbuf[32]; |
3150 | ||
4ace50a5 FF |
3151 | name = strerrno (errnum); |
3152 | if (name == NULL) | |
cc221e76 | 3153 | { |
4ace50a5 | 3154 | sprintf (locbuf, "Errno %d", errnum); |
cc221e76 FF |
3155 | } |
3156 | else | |
3157 | { | |
4ace50a5 | 3158 | sprintf (locbuf, "%s (%d)", name, errnum); |
cc221e76 FF |
3159 | } |
3160 | return (locbuf); | |
3161 | } | |
3162 | ||
3163 | static void | |
3164 | info_proc_signals (pip, summary) | |
3165 | struct procinfo *pip; | |
3166 | int summary; | |
3167 | { | |
3168 | int signo; | |
3169 | ||
3170 | if (!summary) | |
3171 | { | |
3172 | if (ioctl (pip -> fd, PIOCGTRACE, &pip -> trace) < 0) | |
3173 | { | |
3174 | print_sys_errmsg (pip -> pathname, errno); | |
3175 | error ("PIOCGTRACE failed"); | |
3176 | } | |
3177 | ||
3178 | printf_filtered ("Disposition of signals:\n\n"); | |
3179 | printf_filtered ("\t%-15s %-8s %-8s %-8s %s\n\n", | |
3180 | "Signal", "Trace", "Hold", "Pending", "Description"); | |
3181 | for (signo = 0; signo < NSIG; signo++) | |
3182 | { | |
3183 | QUIT; | |
3184 | printf_filtered ("\t%-15s ", signalname (signo)); | |
3185 | printf_filtered ("%-8s ", | |
3186 | prismember (&pip -> trace, signo) | |
3187 | ? "on" : "off"); | |
3188 | printf_filtered ("%-8s ", | |
3189 | prismember (&pip -> prstatus.pr_sighold, signo) | |
3190 | ? "on" : "off"); | |
2592eef8 PS |
3191 | |
3192 | #ifdef PROCFS_SIGPEND_OFFSET | |
3193 | /* Alpha OSF/1 numbers the pending signals from 1. */ | |
3194 | printf_filtered ("%-8s ", | |
3195 | (signo ? prismember (&pip -> prstatus.pr_sigpend, | |
3196 | signo - 1) | |
3197 | : 0) | |
3198 | ? "yes" : "no"); | |
3199 | #else | |
cc221e76 FF |
3200 | printf_filtered ("%-8s ", |
3201 | prismember (&pip -> prstatus.pr_sigpend, signo) | |
3202 | ? "yes" : "no"); | |
2592eef8 | 3203 | #endif |
4ace50a5 | 3204 | printf_filtered (" %s\n", safe_strsignal (signo)); |
cc221e76 FF |
3205 | } |
3206 | printf_filtered ("\n"); | |
3207 | } | |
3208 | } | |
3209 | ||
3210 | static void | |
3211 | info_proc_faults (pip, summary) | |
3212 | struct procinfo *pip; | |
3213 | int summary; | |
3214 | { | |
3215 | struct trans *transp; | |
3216 | ||
3217 | if (!summary) | |
3218 | { | |
3219 | if (ioctl (pip -> fd, PIOCGFAULT, &pip -> fltset) < 0) | |
3220 | { | |
3221 | print_sys_errmsg (pip -> pathname, errno); | |
3222 | error ("PIOCGFAULT failed"); | |
3223 | } | |
3224 | ||
3225 | printf_filtered ("Current traced hardware fault set:\n\n"); | |
3226 | printf_filtered ("\t%-12s %-8s\n", "Fault", "Trace"); | |
3227 | ||
3228 | for (transp = faults_table; transp -> name != NULL; transp++) | |
3229 | { | |
3230 | QUIT; | |
3231 | printf_filtered ("\t%-12s ", transp -> name); | |
3232 | printf_filtered ("%-8s", prismember (&pip -> fltset, transp -> value) | |
3233 | ? "on" : "off"); | |
3234 | printf_filtered ("\n"); | |
3235 | } | |
3236 | printf_filtered ("\n"); | |
3237 | } | |
3238 | } | |
3239 | ||
3240 | static void | |
3241 | info_proc_mappings (pip, summary) | |
1ab3bf1b | 3242 | struct procinfo *pip; |
cc221e76 | 3243 | int summary; |
a39ad5ce FF |
3244 | { |
3245 | int nmap; | |
3246 | struct prmap *prmaps; | |
3247 | struct prmap *prmap; | |
3248 | ||
cc221e76 | 3249 | if (!summary) |
a39ad5ce | 3250 | { |
cc221e76 | 3251 | printf_filtered ("Mapped address spaces:\n\n"); |
2592eef8 PS |
3252 | #ifdef BFD_HOST_64_BIT |
3253 | printf_filtered (" %18s %18s %10s %10s %7s\n", | |
3254 | #else | |
5c1c5e67 | 3255 | printf_filtered ("\t%10s %10s %10s %10s %7s\n", |
2592eef8 | 3256 | #endif |
cc221e76 FF |
3257 | "Start Addr", |
3258 | " End Addr", | |
3259 | " Size", | |
3260 | " Offset", | |
3261 | "Flags"); | |
3262 | if (ioctl (pip -> fd, PIOCNMAP, &nmap) == 0) | |
a39ad5ce | 3263 | { |
cc221e76 FF |
3264 | prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps)); |
3265 | if (ioctl (pip -> fd, PIOCMAP, prmaps) == 0) | |
a39ad5ce | 3266 | { |
cc221e76 FF |
3267 | for (prmap = prmaps; prmap -> pr_size; ++prmap) |
3268 | { | |
2592eef8 PS |
3269 | #ifdef BFD_HOST_64_BIT |
3270 | printf_filtered (" %#18lx %#18lx %#10x %#10x %7s\n", | |
3271 | #else | |
3272 | printf_filtered ("\t%#10lx %#10lx %#10x %#10x %7s\n", | |
3273 | #endif | |
3274 | (unsigned long)prmap -> pr_vaddr, | |
3275 | (unsigned long)prmap -> pr_vaddr | |
3276 | + prmap -> pr_size - 1, | |
cc221e76 FF |
3277 | prmap -> pr_size, |
3278 | prmap -> pr_off, | |
3279 | mappingflags (prmap -> pr_mflags)); | |
3280 | } | |
a39ad5ce FF |
3281 | } |
3282 | } | |
cc221e76 | 3283 | printf_filtered ("\n"); |
a39ad5ce | 3284 | } |
a39ad5ce FF |
3285 | } |
3286 | ||
3287 | /* | |
3288 | ||
3289 | LOCAL FUNCTION | |
3290 | ||
cc221e76 | 3291 | info_proc -- implement the "info proc" command |
a39ad5ce FF |
3292 | |
3293 | SYNOPSIS | |
3294 | ||
cc221e76 | 3295 | void info_proc (char *args, int from_tty) |
a39ad5ce FF |
3296 | |
3297 | DESCRIPTION | |
3298 | ||
3299 | Implement gdb's "info proc" command by using the /proc interface | |
3300 | to print status information about any currently running process. | |
3301 | ||
3302 | Examples of the use of "info proc" are: | |
3303 | ||
cc221e76 FF |
3304 | info proc (prints summary info for current inferior) |
3305 | info proc 123 (prints summary info for process with pid 123) | |
3306 | info proc mappings (prints address mappings) | |
3307 | info proc times (prints process/children times) | |
3308 | info proc id (prints pid, ppid, gid, sid, etc) | |
3fbdd536 | 3309 | FIXME: i proc id not implemented. |
cc221e76 | 3310 | info proc status (prints general process state info) |
3fbdd536 | 3311 | FIXME: i proc status not implemented. |
cc221e76 FF |
3312 | info proc signals (prints info about signal handling) |
3313 | info proc all (prints all info) | |
a39ad5ce FF |
3314 | |
3315 | */ | |
3316 | ||
3317 | static void | |
cc221e76 | 3318 | info_proc (args, from_tty) |
1ab3bf1b JG |
3319 | char *args; |
3320 | int from_tty; | |
a39ad5ce | 3321 | { |
a39ad5ce | 3322 | int pid; |
a39ad5ce FF |
3323 | struct procinfo *pip; |
3324 | struct cleanup *old_chain; | |
cc221e76 FF |
3325 | char **argv; |
3326 | int argsize; | |
3327 | int summary = 1; | |
3328 | int flags = 0; | |
3329 | int syscalls = 0; | |
3330 | int signals = 0; | |
3331 | int faults = 0; | |
3332 | int mappings = 0; | |
3333 | int times = 0; | |
3334 | int id = 0; | |
3335 | int status = 0; | |
3336 | int all = 0; | |
a39ad5ce FF |
3337 | |
3338 | old_chain = make_cleanup (null_cleanup, 0); | |
3339 | ||
de43d7d0 SG |
3340 | /* Default to using the current inferior if no pid specified. Note |
3341 | that inferior_pid may be 0, hence we set okerr. */ | |
a39ad5ce | 3342 | |
de43d7d0 | 3343 | pip = find_procinfo (inferior_pid, 1); |
a39ad5ce | 3344 | |
a39ad5ce | 3345 | if (args != NULL) |
35f5886e | 3346 | { |
cc221e76 | 3347 | if ((argv = buildargv (args)) == NULL) |
a39ad5ce | 3348 | { |
cc221e76 FF |
3349 | nomem (0); |
3350 | } | |
3351 | make_cleanup (freeargv, (char *) argv); | |
3352 | ||
3353 | while (*argv != NULL) | |
3354 | { | |
3355 | argsize = strlen (*argv); | |
3356 | if (argsize >= 1 && strncmp (*argv, "all", argsize) == 0) | |
3357 | { | |
3358 | summary = 0; | |
3359 | all = 1; | |
3360 | } | |
3361 | else if (argsize >= 2 && strncmp (*argv, "faults", argsize) == 0) | |
3362 | { | |
3363 | summary = 0; | |
3364 | faults = 1; | |
3365 | } | |
3366 | else if (argsize >= 2 && strncmp (*argv, "flags", argsize) == 0) | |
3367 | { | |
3368 | summary = 0; | |
3369 | flags = 1; | |
3370 | } | |
3371 | else if (argsize >= 1 && strncmp (*argv, "id", argsize) == 0) | |
3372 | { | |
3373 | summary = 0; | |
3374 | id = 1; | |
3375 | } | |
3376 | else if (argsize >= 1 && strncmp (*argv, "mappings", argsize) == 0) | |
3377 | { | |
3378 | summary = 0; | |
3379 | mappings = 1; | |
3380 | } | |
3381 | else if (argsize >= 2 && strncmp (*argv, "signals", argsize) == 0) | |
3382 | { | |
3383 | summary = 0; | |
3384 | signals = 1; | |
3385 | } | |
3386 | else if (argsize >= 2 && strncmp (*argv, "status", argsize) == 0) | |
3387 | { | |
3388 | summary = 0; | |
3389 | status = 1; | |
3390 | } | |
3391 | else if (argsize >= 2 && strncmp (*argv, "syscalls", argsize) == 0) | |
3392 | { | |
3393 | summary = 0; | |
3394 | syscalls = 1; | |
3395 | } | |
3396 | else if (argsize >= 1 && strncmp (*argv, "times", argsize) == 0) | |
a39ad5ce | 3397 | { |
cc221e76 FF |
3398 | summary = 0; |
3399 | times = 1; | |
a39ad5ce | 3400 | } |
de43d7d0 | 3401 | else if ((pid = atoi (*argv)) > 0) |
a39ad5ce | 3402 | { |
de43d7d0 SG |
3403 | pip = (struct procinfo *) xmalloc (sizeof (struct procinfo)); |
3404 | memset (pip, 0, sizeof (*pip)); | |
3405 | ||
3406 | pip->pid = pid; | |
ec8ceca3 | 3407 | if (!open_proc_file (pid, pip, O_RDONLY)) |
a39ad5ce FF |
3408 | { |
3409 | perror_with_name (pip -> pathname); | |
3410 | /* NOTREACHED */ | |
3411 | } | |
3412 | make_cleanup (close_proc_file, pip); | |
3413 | } | |
cc221e76 FF |
3414 | else if (**argv != '\000') |
3415 | { | |
3416 | error ("Unrecognized or ambiguous keyword `%s'.", *argv); | |
3417 | } | |
3418 | argv++; | |
a39ad5ce | 3419 | } |
35f5886e | 3420 | } |
a39ad5ce FF |
3421 | |
3422 | /* If we don't have a valid open process at this point, then we have no | |
3423 | inferior or didn't specify a specific pid. */ | |
3424 | ||
de43d7d0 | 3425 | if (!pip) |
35f5886e | 3426 | { |
6fe90fc8 JK |
3427 | error ("\ |
3428 | No process. Start debugging a program or specify an explicit process ID."); | |
35f5886e | 3429 | } |
a39ad5ce | 3430 | if (ioctl (pip -> fd, PIOCSTATUS, &(pip -> prstatus)) < 0) |
35f5886e | 3431 | { |
a39ad5ce FF |
3432 | print_sys_errmsg (pip -> pathname, errno); |
3433 | error ("PIOCSTATUS failed"); | |
35f5886e | 3434 | } |
a39ad5ce | 3435 | |
cc221e76 FF |
3436 | /* Print verbose information of the requested type(s), or just a summary |
3437 | of the information for all types. */ | |
3438 | ||
3439 | printf_filtered ("\nInformation for %s:\n\n", pip -> pathname); | |
3440 | if (summary || all || flags) | |
3441 | { | |
3442 | info_proc_flags (pip, summary); | |
3443 | } | |
3444 | if (summary || all) | |
3445 | { | |
3446 | info_proc_stop (pip, summary); | |
3447 | } | |
3448 | if (summary || all || signals || faults) | |
3449 | { | |
3450 | info_proc_siginfo (pip, summary); | |
3451 | } | |
3452 | if (summary || all || syscalls) | |
3453 | { | |
3454 | info_proc_syscalls (pip, summary); | |
3455 | } | |
3456 | if (summary || all || mappings) | |
3457 | { | |
3458 | info_proc_mappings (pip, summary); | |
3459 | } | |
3460 | if (summary || all || signals) | |
3461 | { | |
3462 | info_proc_signals (pip, summary); | |
3463 | } | |
3464 | if (summary || all || faults) | |
3465 | { | |
3466 | info_proc_faults (pip, summary); | |
3467 | } | |
3468 | printf_filtered ("\n"); | |
a39ad5ce FF |
3469 | |
3470 | /* All done, deal with closing any temporary process info structure, | |
3471 | freeing temporary memory , etc. */ | |
3472 | ||
3473 | do_cleanups (old_chain); | |
3474 | } | |
3475 | ||
de43d7d0 SG |
3476 | /* |
3477 | ||
3478 | LOCAL FUNCTION | |
3479 | ||
eca4a350 | 3480 | procfs_set_sproc_trap -- arrange for child to stop on sproc(). |
de43d7d0 SG |
3481 | |
3482 | SYNOPSIS | |
3483 | ||
eca4a350 | 3484 | void procfs_set_sproc_trap (struct procinfo *) |
de43d7d0 SG |
3485 | |
3486 | DESCRIPTION | |
3487 | ||
3488 | This function sets up a trap on sproc system call exits so that we can | |
eca4a350 | 3489 | detect the arrival of a new thread. We are called with the new thread |
de43d7d0 SG |
3490 | stopped prior to it's first instruction. |
3491 | ||
3492 | Also note that we turn on the inherit-on-fork flag in the child process | |
3493 | so that any grand-children start with all tracing flags set. | |
3494 | */ | |
3495 | ||
952a820e SG |
3496 | #ifdef SYS_sproc |
3497 | ||
de43d7d0 SG |
3498 | static void |
3499 | procfs_set_sproc_trap (pi) | |
3500 | struct procinfo *pi; | |
3501 | { | |
3502 | sysset_t exitset; | |
3503 | ||
3504 | if (ioctl (pi->fd, PIOCGEXIT, &exitset) < 0) | |
3505 | { | |
3506 | print_sys_errmsg (pi->pathname, errno); | |
3507 | error ("PIOCGEXIT failed"); | |
3508 | } | |
3509 | ||
de43d7d0 | 3510 | praddset (&exitset, SYS_sproc); |
de43d7d0 | 3511 | |
eca4a350 SG |
3512 | /* We trap on fork() and vfork() in order to disable debugging in our grand- |
3513 | children and descendant processes. At this time, GDB can only handle | |
3514 | threads (multiple processes, one address space). forks (and execs) result | |
3515 | in the creation of multiple address spaces, which GDB can't handle yet. */ | |
3516 | ||
3517 | praddset (&exitset, SYS_fork); | |
3518 | #ifdef SYS_vfork | |
3519 | praddset (&exitset, SYS_vfork); | |
3520 | #endif | |
3521 | ||
de43d7d0 SG |
3522 | if (ioctl (pi->fd, PIOCSEXIT, &exitset) < 0) |
3523 | { | |
3524 | print_sys_errmsg (pi->pathname, errno); | |
3525 | error ("PIOCSEXIT failed"); | |
3526 | } | |
3527 | ||
3528 | /* Turn on inherit-on-fork flag so that all grand-children of gdb start with | |
3529 | tracing flags set. */ | |
3530 | ||
3531 | #ifdef PIOCSET /* New method */ | |
3532 | { | |
3533 | long pr_flags; | |
3534 | pr_flags = PR_FORK; | |
3535 | ioctl (pi->fd, PIOCSET, &pr_flags); | |
3536 | } | |
3537 | #else | |
3538 | #ifdef PIOCSFORK /* Original method */ | |
3539 | ioctl (pi->fd, PIOCSFORK, NULL); | |
3540 | #endif | |
3541 | #endif | |
3542 | } | |
952a820e | 3543 | #endif /* SYS_sproc */ |
de43d7d0 | 3544 | |
3fbdd536 JG |
3545 | /* Fork an inferior process, and start debugging it with /proc. */ |
3546 | ||
3547 | static void | |
3548 | procfs_create_inferior (exec_file, allargs, env) | |
3549 | char *exec_file; | |
3550 | char *allargs; | |
3551 | char **env; | |
3552 | { | |
08f74b92 JK |
3553 | char *shell_file = getenv ("SHELL"); |
3554 | char *tryname; | |
3555 | if (shell_file != NULL && strchr (shell_file, '/') == NULL) | |
3556 | { | |
3557 | ||
3558 | /* We will be looking down the PATH to find shell_file. If we | |
3559 | just do this the normal way (via execlp, which operates by | |
3560 | attempting an exec for each element of the PATH until it | |
3561 | finds one which succeeds), then there will be an exec for | |
3562 | each failed attempt, each of which will cause a PR_SYSEXIT | |
3563 | stop, and we won't know how to distinguish the PR_SYSEXIT's | |
3564 | for these failed execs with the ones for successful execs | |
3565 | (whether the exec has succeeded is stored at that time in the | |
3566 | carry bit or some such architecture-specific and | |
3567 | non-ABI-specified place). | |
3568 | ||
3569 | So I can't think of anything better than to search the PATH | |
3570 | now. This has several disadvantages: (1) There is a race | |
3571 | condition; if we find a file now and it is deleted before we | |
3572 | exec it, we lose, even if the deletion leaves a valid file | |
3573 | further down in the PATH, (2) there is no way to know exactly | |
3574 | what an executable (in the sense of "capable of being | |
3575 | exec'd") file is. Using access() loses because it may lose | |
3576 | if the caller is the superuser; failing to use it loses if | |
3577 | there are ACLs or some such. */ | |
3578 | ||
3579 | char *p; | |
3580 | char *p1; | |
f93b941b JK |
3581 | /* FIXME-maybe: might want "set path" command so user can change what |
3582 | path is used from within GDB. */ | |
08f74b92 JK |
3583 | char *path = getenv ("PATH"); |
3584 | int len; | |
3585 | struct stat statbuf; | |
3586 | ||
3587 | if (path == NULL) | |
3588 | path = "/bin:/usr/bin"; | |
3589 | ||
3590 | tryname = alloca (strlen (path) + strlen (shell_file) + 2); | |
3591 | for (p = path; p != NULL; p = p1 ? p1 + 1: NULL) | |
3592 | { | |
3593 | p1 = strchr (p, ':'); | |
3594 | if (p1 != NULL) | |
3595 | len = p1 - p; | |
3596 | else | |
3597 | len = strlen (p); | |
3598 | strncpy (tryname, p, len); | |
3599 | tryname[len] = '\0'; | |
3600 | strcat (tryname, "/"); | |
3601 | strcat (tryname, shell_file); | |
3602 | if (access (tryname, X_OK) < 0) | |
3603 | continue; | |
3604 | if (stat (tryname, &statbuf) < 0) | |
3605 | continue; | |
3606 | if (!S_ISREG (statbuf.st_mode)) | |
3607 | /* We certainly need to reject directories. I'm not quite | |
3608 | as sure about FIFOs, sockets, etc., but I kind of doubt | |
3609 | that people want to exec() these things. */ | |
3610 | continue; | |
3611 | break; | |
3612 | } | |
3613 | if (p == NULL) | |
3614 | /* Not found. This must be an error rather than merely passing | |
3615 | the file to execlp(), because execlp() would try all the | |
3616 | exec()s, causing GDB to get confused. */ | |
3617 | error ("Can't find shell %s in PATH", shell_file); | |
3618 | ||
3619 | shell_file = tryname; | |
3620 | } | |
3621 | ||
3fbdd536 | 3622 | fork_inferior (exec_file, allargs, env, |
08f74b92 JK |
3623 | proc_set_exec_trap, procfs_init_inferior, shell_file); |
3624 | ||
3fbdd536 JG |
3625 | /* We are at the first instruction we care about. */ |
3626 | /* Pedal to the metal... */ | |
de43d7d0 SG |
3627 | |
3628 | /* Setup traps on exit from sproc() */ | |
3629 | ||
952a820e SG |
3630 | #ifdef SYS_sproc |
3631 | procfs_set_sproc_trap (current_procinfo); | |
3632 | #endif | |
de43d7d0 | 3633 | |
67ac9759 | 3634 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_0, 0); |
3fbdd536 JG |
3635 | } |
3636 | ||
3637 | /* Clean up after the inferior dies. */ | |
3638 | ||
3639 | static void | |
3640 | procfs_mourn_inferior () | |
3641 | { | |
fb63d460 | 3642 | struct procinfo *pi; |
cd4104e0 | 3643 | struct procinfo *next_pi; |
fb63d460 | 3644 | |
cd4104e0 TL |
3645 | for (pi = procinfo_list; pi; pi = next_pi) |
3646 | { | |
3647 | next_pi = pi->next; | |
3648 | unconditionally_kill_inferior (pi); | |
3649 | } | |
fb63d460 | 3650 | |
3fbdd536 JG |
3651 | unpush_target (&procfs_ops); |
3652 | generic_mourn_inferior (); | |
3653 | } | |
3654 | ||
cd4104e0 | 3655 | |
3fbdd536 JG |
3656 | /* Mark our target-struct as eligible for stray "run" and "attach" commands. */ |
3657 | static int | |
3658 | procfs_can_run () | |
3659 | { | |
3660 | return(1); | |
3661 | } | |
f5a8f1a6 | 3662 | #ifdef TARGET_HAS_HARDWARE_WATCHPOINTS |
999dd04b JL |
3663 | \f |
3664 | /* Insert a watchpoint */ | |
3665 | int | |
3666 | procfs_set_watchpoint(pid, addr, len, rw) | |
3667 | int pid; | |
3668 | CORE_ADDR addr; | |
3669 | int len; | |
3670 | int rw; | |
3671 | { | |
3672 | struct procinfo *pi; | |
3673 | prwatch_t wpt; | |
3674 | ||
3675 | pi = find_procinfo (pid == -1 ? inferior_pid : pid, 0); | |
3676 | wpt.pr_vaddr = (caddr_t)addr; | |
3677 | wpt.pr_size = len; | |
3678 | wpt.pr_wflags = ((rw & 1) ? MA_READ : 0) | ((rw & 2) ? MA_WRITE : 0); | |
3679 | if (ioctl (pi->fd, PIOCSWATCH, &wpt) < 0) | |
3680 | { | |
3681 | if (errno == E2BIG) | |
3682 | return -1; | |
3683 | /* Currently it sometimes happens that the same watchpoint gets | |
3684 | deleted twice - don't die in this case (FIXME please) */ | |
3685 | if (errno == ESRCH && len == 0) | |
3686 | return 0; | |
3687 | print_sys_errmsg (pi->pathname, errno); | |
3688 | error ("PIOCSWATCH failed"); | |
3689 | } | |
3690 | return 0; | |
3691 | } | |
3692 | ||
3693 | int | |
3694 | procfs_stopped_by_watchpoint(pid) | |
3695 | int pid; | |
3696 | { | |
3697 | struct procinfo *pi; | |
3698 | short what; | |
3699 | short why; | |
3700 | ||
3701 | pi = find_procinfo (pid == -1 ? inferior_pid : pid, 0); | |
3702 | if (pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP)) | |
3703 | { | |
3704 | why = pi->prstatus.pr_why; | |
3705 | what = pi->prstatus.pr_what; | |
3706 | if (why == PR_FAULTED | |
6bc194d2 JL |
3707 | #if defined (FLTWATCH) && defined (FLTKWATCH) |
3708 | && (what == FLTWATCH) || (what == FLTKWATCH) | |
3709 | #else | |
3710 | #ifdef FLTWATCH | |
3711 | && (what == FLTWATCH) | |
3712 | #endif | |
3713 | #ifdef FLTKWATCH | |
3714 | && (what == FLTKWATCH) | |
3715 | #endif | |
72b8ca51 | 3716 | #endif |
6bc194d2 | 3717 | ) |
999dd04b JL |
3718 | return what; |
3719 | } | |
3720 | return 0; | |
3721 | } | |
6bc194d2 | 3722 | #endif |
999dd04b | 3723 | |
78b459a7 SG |
3724 | /* Send a SIGINT to the process group. This acts just like the user typed a |
3725 | ^C on the controlling terminal. | |
3726 | ||
3727 | XXX - This may not be correct for all systems. Some may want to use | |
3728 | killpg() instead of kill (-pgrp). */ | |
3729 | ||
3730 | void | |
2592eef8 | 3731 | procfs_stop () |
78b459a7 SG |
3732 | { |
3733 | extern pid_t inferior_process_group; | |
3734 | ||
3735 | kill (-inferior_process_group, SIGINT); | |
3736 | } | |
3737 | ||
3fbdd536 JG |
3738 | \f |
3739 | struct target_ops procfs_ops = { | |
3740 | "procfs", /* to_shortname */ | |
3741 | "Unix /proc child process", /* to_longname */ | |
3742 | "Unix /proc child process (started by the \"run\" command).", /* to_doc */ | |
3743 | procfs_open, /* to_open */ | |
3744 | 0, /* to_close */ | |
3745 | procfs_attach, /* to_attach */ | |
3746 | procfs_detach, /* to_detach */ | |
3747 | procfs_resume, /* to_resume */ | |
3748 | procfs_wait, /* to_wait */ | |
3749 | procfs_fetch_registers, /* to_fetch_registers */ | |
3750 | procfs_store_registers, /* to_store_registers */ | |
3751 | procfs_prepare_to_store, /* to_prepare_to_store */ | |
3752 | procfs_xfer_memory, /* to_xfer_memory */ | |
3753 | procfs_files_info, /* to_files_info */ | |
3754 | memory_insert_breakpoint, /* to_insert_breakpoint */ | |
3755 | memory_remove_breakpoint, /* to_remove_breakpoint */ | |
3756 | terminal_init_inferior, /* to_terminal_init */ | |
3757 | terminal_inferior, /* to_terminal_inferior */ | |
3758 | terminal_ours_for_output, /* to_terminal_ours_for_output */ | |
3759 | terminal_ours, /* to_terminal_ours */ | |
3760 | child_terminal_info, /* to_terminal_info */ | |
3761 | procfs_kill_inferior, /* to_kill */ | |
3762 | 0, /* to_load */ | |
3763 | 0, /* to_lookup_symbol */ | |
3764 | procfs_create_inferior, /* to_create_inferior */ | |
3765 | procfs_mourn_inferior, /* to_mourn_inferior */ | |
3766 | procfs_can_run, /* to_can_run */ | |
3950a34e | 3767 | procfs_notice_signals, /* to_notice_signals */ |
10f644eb | 3768 | 0, /* to_thread_alive */ |
2592eef8 | 3769 | procfs_stop, /* to_stop */ |
3fbdd536 JG |
3770 | process_stratum, /* to_stratum */ |
3771 | 0, /* to_next */ | |
3772 | 1, /* to_has_all_memory */ | |
3773 | 1, /* to_has_memory */ | |
3774 | 1, /* to_has_stack */ | |
3775 | 1, /* to_has_registers */ | |
3776 | 1, /* to_has_execution */ | |
3777 | 0, /* sections */ | |
3778 | 0, /* sections_end */ | |
3779 | OPS_MAGIC /* to_magic */ | |
3780 | }; | |
3781 | ||
3fbdd536 JG |
3782 | void |
3783 | _initialize_procfs () | |
3784 | { | |
2592eef8 PS |
3785 | #ifdef HAVE_OPTIONAL_PROC_FS |
3786 | char procname[32]; | |
3787 | int fd; | |
3788 | ||
3789 | /* If we have an optional /proc filesystem (e.g. under OSF/1), | |
3790 | don't add procfs support if we cannot access the running | |
3791 | GDB via /proc. */ | |
3792 | sprintf (procname, PROC_NAME_FMT, getpid ()); | |
3793 | if ((fd = open (procname, O_RDONLY)) < 0) | |
3794 | return; | |
3795 | close (fd); | |
3796 | #endif | |
3797 | ||
3fbdd536 JG |
3798 | add_target (&procfs_ops); |
3799 | ||
3800 | add_info ("proc", info_proc, | |
cc221e76 FF |
3801 | "Show process status information using /proc entry.\n\ |
3802 | Specify process id or use current inferior by default.\n\ | |
3803 | Specify keywords for detailed information; default is summary.\n\ | |
3804 | Keywords are: `all', `faults', `flags', `id', `mappings', `signals',\n\ | |
3805 | `status', `syscalls', and `times'.\n\ | |
3fbdd536 | 3806 | Unambiguous abbreviations may be used."); |
a39ad5ce | 3807 | |
cc221e76 | 3808 | init_syscall_table (); |
35f5886e | 3809 | } |