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