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[deliverable/binutils-gdb.git] / gdb / procfs.c
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35f5886e 1/* Machine independent support for SVR4 /proc (process file system) for GDB.
f0fce3b8 2 Copyright 1991, 1992-97, 1998 Free Software Foundation, Inc.
234a732d
GN		 3 Written by Fred Fish at Cygnus Support. Changes for sysv4.2mp procfs
4 compatibility by Geoffrey Noer at Cygnus Solutions.
35f5886e
FF		 5
6This file is part of GDB.
7
8This program is free software; you can redistribute it and/or modify
9it under the terms of the GNU General Public License as published by
10the Free Software Foundation; either version 2 of the License, or
11(at your option) any later version.
12
13This program is distributed in the hope that it will be useful,
14but WITHOUT ANY WARRANTY; without even the implied warranty of
15MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16GNU General Public License for more details.
17
18You should have received a copy of the GNU General Public License
19along with this program; if not, write to the Free Software
6c9638b4 20Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
35f5886e
FF		 21
22
23/* N O T E S
24
25For information on the details of using /proc consult section proc(4)
26in the UNIX System V Release 4 System Administrator's Reference Manual.
27
234a732d
GN		 28The general register and floating point register sets are manipulated
29separately. This file makes the assumption that if FP0_REGNUM is
35f5886e
FF		 30defined, then support for the floating point register set is desired,
31regardless of whether or not the actual target has floating point hardware.
32
33 */
34
35
5129100c 36#include "defs.h"
35f5886e 37
08f74b92 38#include <sys/types.h>
407a8389 39#include <time.h>
2592eef8
PS		 40#include <sys/fault.h>
41#include <sys/syscall.h>
35f5886e
FF		 42#include <sys/procfs.h>
43#include <fcntl.h>
44#include <errno.h>
2b576293 45#include "gdb_string.h"
de43d7d0
SG		 46#include <stropts.h>
47#include <poll.h>
08f74b92 48#include <unistd.h>
2b576293 49#include "gdb_stat.h"
35f5886e 50
35f5886e
FF		 51#include "inferior.h"
52#include "target.h"
51b57ded 53#include "command.h"
3fbdd536 54#include "gdbcore.h"
fdfa3315 55#include "gdbthread.h"
cc221e76 56
1e50f1b4
JM		 57#if !defined(SYS_lwp_create) && defined(SYS_lwpcreate)
58# define SYS_lwp_create SYS_lwpcreate
59#endif
60
61#if !defined(SYS_lwp_exit) && defined(SYS_lwpexit)
62# define SYS_lwp_exit SYS_lwpexit
63#endif
64
65#if !defined(SYS_lwp_wait) && defined(SYS_lwpwait)
66# define SYS_lwp_wait SYS_lwpwait
67#endif
68
69#if !defined(SYS_lwp_self) && defined(SYS_lwpself)
70# define SYS_lwp_self SYS_lwpself
71#endif
72
73#if !defined(SYS_lwp_info) && defined(SYS_lwpinfo)
74# define SYS_lwp_info SYS_lwpinfo
75#endif
76
77#if !defined(SYS_lwp_private) && defined(SYS_lwpprivate)
78# define SYS_lwp_private SYS_lwpprivate
79#endif
80
81#if !defined(SYS_lwp_kill) && defined(SYS_lwpkill)
82# define SYS_lwp_kill SYS_lwpkill
83#endif
84
85#if !defined(SYS_lwp_suspend) && defined(SYS_lwpsuspend)
86# define SYS_lwp_suspend SYS_lwpsuspend
87#endif
88
89#if !defined(SYS_lwp_continue) && defined(SYS_lwpcontinue)
90# define SYS_lwp_continue SYS_lwpcontinue
91#endif
92
234a732d
GN		 93/* the name of the proc status struct depends on the implementation */
94#ifdef HAVE_PSTATUS_T
95 typedef pstatus_t gdb_prstatus_t;
96#else
97 typedef prstatus_t gdb_prstatus_t;
98#endif
99
cc221e76 100#define MAX_SYSCALLS 256 /* Maximum number of syscalls for table */
35f5886e 101
234a732d
GN		 102/* proc name formats may vary depending on the proc implementation */
103#ifdef HAVE_MULTIPLE_PROC_FDS
95b71071
PS		 104# ifndef CTL_PROC_NAME_FMT
105# define CTL_PROC_NAME_FMT "/proc/%d/ctl"
106# define AS_PROC_NAME_FMT "/proc/%d/as"
107# define MAP_PROC_NAME_FMT "/proc/%d/map"
108# define STATUS_PROC_NAME_FMT "/proc/%d/status"
109# endif
234a732d 110#else /* HAVE_MULTIPLE_PROC_FDS */
95b71071
PS		 111# ifndef CTL_PROC_NAME_FMT
112# define CTL_PROC_NAME_FMT "/proc/%05d"
113# define AS_PROC_NAME_FMT "/proc/%05d"
114# define MAP_PROC_NAME_FMT "/proc/%05d"
115# define STATUS_PROC_NAME_FMT "/proc/%05d"
116# endif
234a732d
GN		 117#endif /* HAVE_MULTIPLE_PROC_FDS */
118
15af627c
FL		 119
120/* These #ifdefs are for sol2.x in particular. sol2.x has
121 both a "gregset_t" and a "prgregset_t", which have
122 similar uses but different layouts. sol2.x gdb tries to
123 use prgregset_t (and prfpregset_t) everywhere. */
124
125#ifdef GDB_GREGSET_TYPE
126 typedef GDB_GREGSET_TYPE gdb_gregset_t;
127#else
128 typedef gregset_t gdb_gregset_t;
129#endif
130
131#ifdef GDB_FPREGSET_TYPE
132 typedef GDB_FPREGSET_TYPE gdb_fpregset_t;
133#else
134 typedef fpregset_t gdb_fpregset_t;
135#endif
136
137
234a732d 138#define MAX_PROC_NAME_SIZE sizeof("/proc/1234567890/status")
35f5886e 139
3fbdd536
JG		 140extern struct target_ops procfs_ops; /* Forward declaration */
141
8fc2b417
SG		 142int procfs_suppress_run = 0; /* Non-zero if procfs should pretend not to
143 be a runnable target. Used by targets
144 that can sit atop procfs, such as solaris
145 thread support. */
146
35f5886e
FF		 147#if 1 /* FIXME: Gross and ugly hack to resolve coredep.c global */
148CORE_ADDR kernel_u_addr;
149#endif
150
cc221e76
FF		 151#ifdef BROKEN_SIGINFO_H /* Workaround broken SGS <sys/siginfo.h> */
152#undef si_pid
153#define si_pid _data._proc.pid
154#undef si_uid
155#define si_uid _data._proc._pdata._kill.uid
156#endif /* BROKEN_SIGINFO_H */
157
234a732d
GN		 158/* Define structures for passing commands to /proc/pid/ctl file. Note that
159 while we create these for the PROCFS_USE_READ_WRITE world, we use them
160 and ignore the extra cmd int in other proc schemes.
161*/
162/* generic ctl msg */
163struct proc_ctl {
164 int cmd;
165 long data;
166};
167
168/* set general registers */
169struct greg_ctl {
170 int cmd;
15af627c 171 gdb_gregset_t gregset;
234a732d
GN		 172};
173
174/* set fp registers */
175struct fpreg_ctl {
176 int cmd;
15af627c 177 gdb_fpregset_t fpregset;
234a732d
GN		 178};
179
180/* set signals to be traced */
181struct sig_ctl {
182 int cmd;
183 sigset_t sigset;
184};
185
186/* set faults to be traced */
187struct flt_ctl {
188 int cmd;
189 fltset_t fltset;
190};
191
192/* set system calls to be traced */
193struct sys_ctl {
194 int cmd;
195 sysset_t sysset;
196};
197
198/* set current signal to be traced */
199struct sigi_ctl {
200 int cmd;
201 siginfo_t siginfo;
202};
203
35f5886e
FF		 204/* All access to the inferior, either one started by gdb or one that has
205 been attached to, is controlled by an instance of a procinfo structure,
206 defined below. Since gdb currently only handles one inferior at a time,
a39ad5ce
FF		 207 the procinfo structure for the inferior is statically allocated and
208 only one exists at any given time. There is a separate procinfo
209 structure for use by the "info proc" command, so that we can print
210 useful information about any random process without interfering with
211 the inferior's procinfo information. */
35f5886e
FF		 212
213struct procinfo {
de43d7d0 214 struct procinfo *next;
35f5886e 215 int pid; /* Process ID of inferior */
234a732d
GN		 216 int ctl_fd; /* File descriptor for /proc ctl file */
217 int status_fd; /* File descriptor for /proc status file */
218 int as_fd; /* File descriptor for /proc as file */
219 int map_fd; /* File descriptor for /proc map file */
35f5886e 220 char *pathname; /* Pathname to /proc entry */
de43d7d0 221 int had_event; /* poll/select says something happened */
35f5886e 222 int was_stopped; /* Nonzero if was stopped prior to attach */
d65eee73 223 int nopass_next_sigstop; /* Don't pass a sigstop on next resume */
234a732d 224#ifndef HAVE_NO_PRRUN_T
35f5886e 225 prrun_t prrun; /* Control state when it is run */
234a732d
GN		 226#endif
227 gdb_prstatus_t prstatus; /* Current process status info */
228 struct greg_ctl gregset; /* General register set */
229 struct fpreg_ctl fpregset; /* Floating point register set */
230 struct flt_ctl fltset; /* Current traced hardware fault set */
231 struct sig_ctl trace; /* Current traced signal set */
232 struct sys_ctl exitset; /* Current traced system call exit set */
233 struct sys_ctl entryset; /* Current traced system call entry set */
234 struct sig_ctl saved_sighold; /* Saved held signal set */
235 struct flt_ctl saved_fltset; /* Saved traced hardware fault set */
236 struct sig_ctl saved_trace; /* Saved traced signal set */
237 struct sys_ctl saved_exitset; /* Saved traced system call exit set */
238 struct sys_ctl saved_entryset;/* Saved traced system call entry set */
3780c337
MS		 239 int num_syscall_handlers; /* Number of syscall trap handlers
240 currently installed */
241 /* Pointer to list of syscall trap handlers */
242 struct procfs_syscall_handler *syscall_handlers;
15af627c
FL		 243 int saved_rtnval; /* return value and status for wait(), */
244 int saved_statval; /* as supplied by a syscall handler. */
8fc2b417 245 int new_child; /* Non-zero if it's a new thread */
a39ad5ce
FF		 246};
247
de43d7d0
SG		 248/* List of inferior process information */
249static struct procinfo *procinfo_list = NULL;
de43d7d0
SG		 250static struct pollfd *poll_list; /* pollfds used for waiting on /proc */
251
252static int num_poll_list = 0; /* Number of entries in poll_list */
253
cc221e76
FF		 254/* Much of the information used in the /proc interface, particularly for
255 printing status information, is kept as tables of structures of the
256 following form. These tables can be used to map numeric values to
257 their symbolic names and to a string that describes their specific use. */
258
259struct trans {
260 int value; /* The numeric value */
261 char *name; /* The equivalent symbolic value */
262 char *desc; /* Short description of value */
263};
264
265/* Translate bits in the pr_flags member of the prstatus structure, into the
266 names and desc information. */
267
268static struct trans pr_flag_table[] =
269{
270#if defined (PR_STOPPED)
e3be225e 271 { PR_STOPPED, "PR_STOPPED", "Process is stopped" },
cc221e76
FF		 272#endif
273#if defined (PR_ISTOP)
e3be225e 274 { PR_ISTOP, "PR_ISTOP", "Stopped on an event of interest" },
cc221e76
FF		 275#endif
276#if defined (PR_DSTOP)
e3be225e 277 { PR_DSTOP, "PR_DSTOP", "A stop directive is in effect" },
cc221e76
FF		 278#endif
279#if defined (PR_ASLEEP)
e3be225e 280 { PR_ASLEEP, "PR_ASLEEP", "Sleeping in an interruptible system call" },
cc221e76
FF		 281#endif
282#if defined (PR_FORK)
e3be225e 283 { PR_FORK, "PR_FORK", "Inherit-on-fork is in effect" },
cc221e76
FF		 284#endif
285#if defined (PR_RLC)
e3be225e 286 { PR_RLC, "PR_RLC", "Run-on-last-close is in effect" },
cc221e76
FF		 287#endif
288#if defined (PR_PTRACE)
e3be225e 289 { PR_PTRACE, "PR_PTRACE", "Process is being controlled by ptrace" },
cc221e76
FF		 290#endif
291#if defined (PR_PCINVAL)
e3be225e 292 { PR_PCINVAL, "PR_PCINVAL", "PC refers to an invalid virtual address" },
cc221e76
FF		 293#endif
294#if defined (PR_ISSYS)
e3be225e 295 { PR_ISSYS, "PR_ISSYS", "Is a system process" },
5c1c5e67
FF		 296#endif
297#if defined (PR_STEP)
e3be225e 298 { PR_STEP, "PR_STEP", "Process has single step pending" },
5c1c5e67
FF		 299#endif
300#if defined (PR_KLC)
e3be225e 301 { PR_KLC, "PR_KLC", "Kill-on-last-close is in effect" },
5c1c5e67
FF		 302#endif
303#if defined (PR_ASYNC)
e3be225e 304 { PR_ASYNC, "PR_ASYNC", "Asynchronous stop is in effect" },
5c1c5e67
FF		 305#endif
306#if defined (PR_PCOMPAT)
e3be225e 307 { PR_PCOMPAT, "PR_PCOMPAT", "Ptrace compatibility mode in effect" },
3780c337
MS		 308#endif
309#if defined (PR_MSACCT)
310 { PR_MSACCT, "PR_MSACCT", "Microstate accounting enabled" },
311#endif
312#if defined (PR_BPTADJ)
313 { PR_BPTADJ, "PR_BPTADJ", "Breakpoint PC adjustment in effect" },
314#endif
315#if defined (PR_ASLWP)
316 { PR_ASLWP, "PR_ASLWP", "Asynchronus signal LWP" },
cc221e76 317#endif
e3be225e 318 { 0, NULL, NULL }
cc221e76
FF		 319};
320
321/* Translate values in the pr_why field of the prstatus struct. */
322
323static struct trans pr_why_table[] =
324{
325#if defined (PR_REQUESTED)
e3be225e 326 { PR_REQUESTED, "PR_REQUESTED", "Directed to stop via PIOCSTOP/PIOCWSTOP" },
cc221e76
FF		 327#endif
328#if defined (PR_SIGNALLED)
e3be225e 329 { PR_SIGNALLED, "PR_SIGNALLED", "Receipt of a traced signal" },
cc221e76 330#endif
cc221e76 331#if defined (PR_SYSENTRY)
e3be225e 332 { PR_SYSENTRY, "PR_SYSENTRY", "Entry to a traced system call" },
cc221e76
FF		 333#endif
334#if defined (PR_SYSEXIT)
e3be225e 335 { PR_SYSEXIT, "PR_SYSEXIT", "Exit from a traced system call" },
cc221e76
FF		 336#endif
337#if defined (PR_JOBCONTROL)
e3be225e 338 { PR_JOBCONTROL, "PR_JOBCONTROL", "Default job control stop signal action" },
5c1c5e67 339#endif
3780c337
MS		 340#if defined (PR_FAULTED)
341 { PR_FAULTED, "PR_FAULTED", "Incurred a traced hardware fault" },
342#endif
5c1c5e67 343#if defined (PR_SUSPENDED)
e3be225e 344 { PR_SUSPENDED, "PR_SUSPENDED", "Process suspended" },
3780c337
MS		 345#endif
346#if defined (PR_CHECKPOINT)
347 { PR_CHECKPOINT, "PR_CHECKPOINT", "(???)" },
cc221e76 348#endif
e3be225e 349 { 0, NULL, NULL }
cc221e76
FF		 350};
351
352/* Hardware fault translation table. */
353
354static struct trans faults_table[] =
355{
356#if defined (FLTILL)
e3be225e 357 { FLTILL, "FLTILL", "Illegal instruction" },
cc221e76
FF		 358#endif
359#if defined (FLTPRIV)
e3be225e 360 { FLTPRIV, "FLTPRIV", "Privileged instruction" },
cc221e76
FF		 361#endif
362#if defined (FLTBPT)
e3be225e 363 { FLTBPT, "FLTBPT", "Breakpoint trap" },
cc221e76
FF		 364#endif
365#if defined (FLTTRACE)
e3be225e 366 { FLTTRACE, "FLTTRACE", "Trace trap" },
cc221e76
FF		 367#endif
368#if defined (FLTACCESS)
e3be225e 369 { FLTACCESS, "FLTACCESS", "Memory access fault" },
cc221e76
FF		 370#endif
371#if defined (FLTBOUNDS)
e3be225e 372 { FLTBOUNDS, "FLTBOUNDS", "Memory bounds violation" },
cc221e76
FF		 373#endif
374#if defined (FLTIOVF)
e3be225e 375 { FLTIOVF, "FLTIOVF", "Integer overflow" },
cc221e76
FF		 376#endif
377#if defined (FLTIZDIV)
e3be225e 378 { FLTIZDIV, "FLTIZDIV", "Integer zero divide" },
cc221e76
FF		 379#endif
380#if defined (FLTFPE)
e3be225e 381 { FLTFPE, "FLTFPE", "Floating-point exception" },
cc221e76
FF		 382#endif
383#if defined (FLTSTACK)
e3be225e 384 { FLTSTACK, "FLTSTACK", "Unrecoverable stack fault" },
cc221e76
FF		 385#endif
386#if defined (FLTPAGE)
e3be225e 387 { FLTPAGE, "FLTPAGE", "Recoverable page fault" },
cc221e76 388#endif
e3be225e 389 { 0, NULL, NULL }
cc221e76
FF		 390};
391
392/* Translation table for signal generation information. See UNIX System
393 V Release 4 Programmer's Reference Manual, siginfo(5). */
394
395static struct sigcode {
396 int signo;
397 int code;
398 char *codename;
399 char *desc;
400} siginfo_table[] = {
401#if defined (SIGILL) && defined (ILL_ILLOPC)
e3be225e 402 { SIGILL, ILL_ILLOPC, "ILL_ILLOPC", "Illegal opcode" },
cc221e76
FF		 403#endif
404#if defined (SIGILL) && defined (ILL_ILLOPN)
e3be225e 405 { SIGILL, ILL_ILLOPN, "ILL_ILLOPN", "Illegal operand", },
cc221e76
FF		 406#endif
407#if defined (SIGILL) && defined (ILL_ILLADR)
e3be225e 408 { SIGILL, ILL_ILLADR, "ILL_ILLADR", "Illegal addressing mode" },
cc221e76
FF		 409#endif
410#if defined (SIGILL) && defined (ILL_ILLTRP)
e3be225e 411 { SIGILL, ILL_ILLTRP, "ILL_ILLTRP", "Illegal trap" },
cc221e76
FF		 412#endif
413#if defined (SIGILL) && defined (ILL_PRVOPC)
e3be225e 414 { SIGILL, ILL_PRVOPC, "ILL_PRVOPC", "Privileged opcode" },
cc221e76
FF		 415#endif
416#if defined (SIGILL) && defined (ILL_PRVREG)
e3be225e 417 { SIGILL, ILL_PRVREG, "ILL_PRVREG", "Privileged register" },
cc221e76
FF		 418#endif
419#if defined (SIGILL) && defined (ILL_COPROC)
e3be225e 420 { SIGILL, ILL_COPROC, "ILL_COPROC", "Coprocessor error" },
cc221e76
FF		 421#endif
422#if defined (SIGILL) && defined (ILL_BADSTK)
e3be225e 423 { SIGILL, ILL_BADSTK, "ILL_BADSTK", "Internal stack error" },
cc221e76
FF		 424#endif
425#if defined (SIGFPE) && defined (FPE_INTDIV)
e3be225e 426 { SIGFPE, FPE_INTDIV, "FPE_INTDIV", "Integer divide by zero" },
cc221e76
FF		 427#endif
428#if defined (SIGFPE) && defined (FPE_INTOVF)
e3be225e 429 { SIGFPE, FPE_INTOVF, "FPE_INTOVF", "Integer overflow" },
cc221e76
FF		 430#endif
431#if defined (SIGFPE) && defined (FPE_FLTDIV)
e3be225e 432 { SIGFPE, FPE_FLTDIV, "FPE_FLTDIV", "Floating point divide by zero" },
cc221e76
FF		 433#endif
434#if defined (SIGFPE) && defined (FPE_FLTOVF)
e3be225e 435 { SIGFPE, FPE_FLTOVF, "FPE_FLTOVF", "Floating point overflow" },
cc221e76
FF		 436#endif
437#if defined (SIGFPE) && defined (FPE_FLTUND)
e3be225e 438 { SIGFPE, FPE_FLTUND, "FPE_FLTUND", "Floating point underflow" },
cc221e76
FF		 439#endif
440#if defined (SIGFPE) && defined (FPE_FLTRES)
e3be225e 441 { SIGFPE, FPE_FLTRES, "FPE_FLTRES", "Floating point inexact result" },
cc221e76
FF		 442#endif
443#if defined (SIGFPE) && defined (FPE_FLTINV)
e3be225e 444 { SIGFPE, FPE_FLTINV, "FPE_FLTINV", "Invalid floating point operation" },
cc221e76
FF		 445#endif
446#if defined (SIGFPE) && defined (FPE_FLTSUB)
e3be225e 447 { SIGFPE, FPE_FLTSUB, "FPE_FLTSUB", "Subscript out of range" },
cc221e76
FF		 448#endif
449#if defined (SIGSEGV) && defined (SEGV_MAPERR)
e3be225e 450 { SIGSEGV, SEGV_MAPERR, "SEGV_MAPERR", "Address not mapped to object" },
cc221e76
FF		 451#endif
452#if defined (SIGSEGV) && defined (SEGV_ACCERR)
e3be225e 453 { SIGSEGV, SEGV_ACCERR, "SEGV_ACCERR", "Invalid permissions for object" },
cc221e76
FF		 454#endif
455#if defined (SIGBUS) && defined (BUS_ADRALN)
e3be225e 456 { SIGBUS, BUS_ADRALN, "BUS_ADRALN", "Invalid address alignment" },
cc221e76
FF		 457#endif
458#if defined (SIGBUS) && defined (BUS_ADRERR)
e3be225e 459 { SIGBUS, BUS_ADRERR, "BUS_ADRERR", "Non-existent physical address" },
cc221e76
FF		 460#endif
461#if defined (SIGBUS) && defined (BUS_OBJERR)
e3be225e 462 { SIGBUS, BUS_OBJERR, "BUS_OBJERR", "Object specific hardware error" },
cc221e76
FF		 463#endif
464#if defined (SIGTRAP) && defined (TRAP_BRKPT)
e3be225e 465 { SIGTRAP, TRAP_BRKPT, "TRAP_BRKPT", "Process breakpoint" },
cc221e76
FF		 466#endif
467#if defined (SIGTRAP) && defined (TRAP_TRACE)
e3be225e 468 { SIGTRAP, TRAP_TRACE, "TRAP_TRACE", "Process trace trap" },
cc221e76
FF		 469#endif
470#if defined (SIGCLD) && defined (CLD_EXITED)
e3be225e 471 { SIGCLD, CLD_EXITED, "CLD_EXITED", "Child has exited" },
cc221e76
FF		 472#endif
473#if defined (SIGCLD) && defined (CLD_KILLED)
e3be225e 474 { SIGCLD, CLD_KILLED, "CLD_KILLED", "Child was killed" },
cc221e76
FF		 475#endif
476#if defined (SIGCLD) && defined (CLD_DUMPED)
e3be225e 477 { SIGCLD, CLD_DUMPED, "CLD_DUMPED", "Child has terminated abnormally" },
cc221e76
FF		 478#endif
479#if defined (SIGCLD) && defined (CLD_TRAPPED)
e3be225e 480 { SIGCLD, CLD_TRAPPED, "CLD_TRAPPED", "Traced child has trapped" },
cc221e76
FF		 481#endif
482#if defined (SIGCLD) && defined (CLD_STOPPED)
e3be225e 483 { SIGCLD, CLD_STOPPED, "CLD_STOPPED", "Child has stopped" },
cc221e76
FF		 484#endif
485#if defined (SIGCLD) && defined (CLD_CONTINUED)
e3be225e 486 { SIGCLD, CLD_CONTINUED, "CLD_CONTINUED", "Stopped child had continued" },
cc221e76
FF		 487#endif
488#if defined (SIGPOLL) && defined (POLL_IN)
e3be225e 489 { SIGPOLL, POLL_IN, "POLL_IN", "Input input available" },
cc221e76
FF		 490#endif
491#if defined (SIGPOLL) && defined (POLL_OUT)
e3be225e 492 { SIGPOLL, POLL_OUT, "POLL_OUT", "Output buffers available" },
cc221e76
FF		 493#endif
494#if defined (SIGPOLL) && defined (POLL_MSG)
e3be225e 495 { SIGPOLL, POLL_MSG, "POLL_MSG", "Input message available" },
cc221e76
FF		 496#endif
497#if defined (SIGPOLL) && defined (POLL_ERR)
e3be225e 498 { SIGPOLL, POLL_ERR, "POLL_ERR", "I/O error" },
cc221e76
FF		 499#endif
500#if defined (SIGPOLL) && defined (POLL_PRI)
e3be225e 501 { SIGPOLL, POLL_PRI, "POLL_PRI", "High priority input available" },
cc221e76
FF		 502#endif
503#if defined (SIGPOLL) && defined (POLL_HUP)
e3be225e 504 { SIGPOLL, POLL_HUP, "POLL_HUP", "Device disconnected" },
cc221e76 505#endif
e3be225e 506 { 0, 0, NULL, NULL }
cc221e76
FF		 507};
508
cc221e76
FF		 509static char *syscall_table[MAX_SYSCALLS];
510
1ab3bf1b
JG		 511/* Prototypes for local functions */
512
b607efe7
FF		 513static void procfs_stop PARAMS ((void));
514
515static int procfs_thread_alive PARAMS ((int));
516
517static int procfs_can_run PARAMS ((void));
518
519static void procfs_mourn_inferior PARAMS ((void));
520
521static void procfs_fetch_registers PARAMS ((int));
522
523static int procfs_wait PARAMS ((int, struct target_waitstatus *));
524
525static void procfs_open PARAMS ((char *, int));
526
527static void procfs_files_info PARAMS ((struct target_ops *));
528
529static void procfs_prepare_to_store PARAMS ((void));
530
531static void procfs_detach PARAMS ((char *, int));
532
533static void procfs_attach PARAMS ((char *, int));
534
535static void proc_set_exec_trap PARAMS ((void));
536
4ef1f467 537static int procfs_init_inferior PARAMS ((int));
b607efe7
FF		 538
539static struct procinfo *create_procinfo PARAMS ((int));
540
541static void procfs_store_registers PARAMS ((int));
542
543static int procfs_xfer_memory PARAMS ((CORE_ADDR, char *, int, int, struct target_ops *));
544
545static void procfs_kill_inferior PARAMS ((void));
546
547static char *sigcodedesc PARAMS ((siginfo_t *));
548
549static char *sigcodename PARAMS ((siginfo_t *));
550
551static struct procinfo *wait_fd PARAMS ((void));
552
553static void remove_fd PARAMS ((struct procinfo *));
554
555static void add_fd PARAMS ((struct procinfo *));
556
e3be225e 557static void set_proc_siginfo PARAMS ((struct procinfo *, int));
6b801388 558
e3be225e 559static void init_syscall_table PARAMS ((void));
cc221e76 560
e3be225e 561static char *syscallname PARAMS ((int));
cc221e76 562
e3be225e 563static char *signalname PARAMS ((int));
cc221e76 564
e3be225e 565static char *errnoname PARAMS ((int));
4ace50a5 566
e3be225e 567static int proc_address_to_fd PARAMS ((struct procinfo *, CORE_ADDR, int));
1ab3bf1b 568
234a732d 569static int open_proc_file PARAMS ((int, struct procinfo *, int, int));
1ab3bf1b 570
e3be225e 571static void close_proc_file PARAMS ((struct procinfo *));
1ab3bf1b 572
e3be225e 573static void unconditionally_kill_inferior PARAMS ((struct procinfo *));
1ab3bf1b 574
3780c337 575static NORETURN void proc_init_failed PARAMS ((struct procinfo *, char *, int)) ATTR_NORETURN;
1ab3bf1b 576
e3be225e 577static void info_proc PARAMS ((char *, int));
cc221e76 578
e3be225e 579static void info_proc_flags PARAMS ((struct procinfo *, int));
cc221e76 580
e3be225e 581static void info_proc_stop PARAMS ((struct procinfo *, int));
1ab3bf1b 582
e3be225e 583static void info_proc_siginfo PARAMS ((struct procinfo *, int));
cc221e76 584
e3be225e 585static void info_proc_syscalls PARAMS ((struct procinfo *, int));
cc221e76 586
e3be225e 587static void info_proc_mappings PARAMS ((struct procinfo *, int));
cc221e76 588
e3be225e 589static void info_proc_signals PARAMS ((struct procinfo *, int));
cc221e76 590
e3be225e 591static void info_proc_faults PARAMS ((struct procinfo *, int));
1ab3bf1b 592
e3be225e 593static char *mappingflags PARAMS ((long));
1ab3bf1b 594
e3be225e 595static char *lookupname PARAMS ((struct trans *, unsigned int, char *));
cc221e76 596
e3be225e 597static char *lookupdesc PARAMS ((struct trans *, unsigned int));
cc221e76 598
e3be225e 599static int do_attach PARAMS ((int pid));
3fbdd536 600
e3be225e 601static void do_detach PARAMS ((int siggnal));
3fbdd536 602
e3be225e 603static void procfs_create_inferior PARAMS ((char *, char *, char **));
3fbdd536 604
e3be225e 605static void procfs_notice_signals PARAMS ((int pid));
de43d7d0 606
234a732d
GN		 607static void notice_signals PARAMS ((struct procinfo *, struct sig_ctl *));
608
e3be225e 609static struct procinfo *find_procinfo PARAMS ((pid_t pid, int okfail));
3950a34e 610
234a732d 611static int procfs_write_pcwstop PARAMS ((struct procinfo *));
3780c337 612static int procfs_read_status PARAMS ((struct procinfo *));
234a732d
GN		 613static void procfs_write_pckill PARAMS ((struct procinfo *));
614
8fc2b417
SG		 615typedef int syscall_func_t PARAMS ((struct procinfo *pi, int syscall_num,
616 int why, int *rtnval, int *statval));
617
618static void procfs_set_syscall_trap PARAMS ((struct procinfo *pi,
619 int syscall_num, int flags,
620 syscall_func_t *func));
621
622static void procfs_clear_syscall_trap PARAMS ((struct procinfo *pi,
623 int syscall_num, int errok));
624
625#define PROCFS_SYSCALL_ENTRY 0x1 /* Trap on entry to sys call */
626#define PROCFS_SYSCALL_EXIT 0x2 /* Trap on exit from sys call */
627
628static syscall_func_t procfs_exit_handler;
629
630static syscall_func_t procfs_exec_handler;
631
632#ifdef SYS_sproc
633static syscall_func_t procfs_sproc_handler;
634static syscall_func_t procfs_fork_handler;
635#endif
636
637#ifdef SYS_lwp_create
638static syscall_func_t procfs_lwp_creation_handler;
639#endif
640
641static void modify_inherit_on_fork_flag PARAMS ((int fd, int flag));
642static void modify_run_on_last_close_flag PARAMS ((int fd, int flag));
643
644/* */
645
646struct procfs_syscall_handler
647{
648 int syscall_num; /* The number of the system call being handled */
649 /* The function to be called */
650 syscall_func_t *func;
651};
652
653static void procfs_resume PARAMS ((int pid, int step,
654 enum target_signal signo));
655
1ab3bf1b
JG		 656/* External function prototypes that can't be easily included in any
657 header file because the args are typedefs in system include files. */
658
15af627c 659extern void supply_gregset PARAMS ((gdb_gregset_t *));
1ab3bf1b 660
15af627c 661extern void fill_gregset PARAMS ((gdb_gregset_t *, int));
1ab3bf1b 662
234a732d 663#ifdef FP0_REGNUM
15af627c 664extern void supply_fpregset PARAMS ((gdb_fpregset_t *));
1ab3bf1b 665
15af627c 666extern void fill_fpregset PARAMS ((gdb_fpregset_t *, int));
234a732d 667#endif
35f5886e 668
cc221e76
FF		 669/*
670
de43d7d0
SG		 671LOCAL FUNCTION
672
673 find_procinfo -- convert a process id to a struct procinfo
674
675SYNOPSIS
676
677 static struct procinfo * find_procinfo (pid_t pid, int okfail);
678
679DESCRIPTION
680
681 Given a process id, look it up in the procinfo chain. Returns
682 a struct procinfo *. If can't find pid, then call error(),
683 unless okfail is set, in which case, return NULL;
684 */
685
686static struct procinfo *
687find_procinfo (pid, okfail)
688 pid_t pid;
689 int okfail;
690{
691 struct procinfo *procinfo;
692
693 for (procinfo = procinfo_list; procinfo; procinfo = procinfo->next)
694 if (procinfo->pid == pid)
695 return procinfo;
696
697 if (okfail)
698 return NULL;
699
700 error ("procfs (find_procinfo): Couldn't locate pid %d", pid);
701}
702
703/*
704
7c5d526e
SG		 705LOCAL MACRO
706
707 current_procinfo -- convert inferior_pid to a struct procinfo
708
709SYNOPSIS
710
711 static struct procinfo * current_procinfo;
712
713DESCRIPTION
714
715 Looks up inferior_pid in the procinfo chain. Always returns a
716 struct procinfo *. If process can't be found, we error() out.
717 */
718
719#define current_procinfo find_procinfo (inferior_pid, 0)
720
721/*
722
de43d7d0
SG		 723LOCAL FUNCTION
724
725 add_fd -- Add the fd to the poll/select list
726
727SYNOPSIS
728
729 static void add_fd (struct procinfo *);
730
731DESCRIPTION
732
733 Add the fd of the supplied procinfo to the list of fds used for
734 poll/select operations.
735 */
736
737static void
738add_fd (pi)
739 struct procinfo *pi;
740{
741 if (num_poll_list <= 0)
742 poll_list = (struct pollfd *) xmalloc (sizeof (struct pollfd));
743 else
744 poll_list = (struct pollfd *) xrealloc (poll_list,
745 (num_poll_list + 1)
746 * sizeof (struct pollfd));
234a732d
GN		 747 poll_list[num_poll_list].fd = pi->ctl_fd;
748#ifdef UNIXWARE
749 poll_list[num_poll_list].events = POLLWRNORM;
750#else
de43d7d0 751 poll_list[num_poll_list].events = POLLPRI;
234a732d 752#endif
de43d7d0
SG		 753
754 num_poll_list++;
755}
756
3780c337
MS		 757/*
758
759LOCAL FUNCTION
760
761 remove_fd -- Remove the fd from the poll/select list
762
763SYNOPSIS
764
765 static void remove_fd (struct procinfo *);
766
767DESCRIPTION
768
769 Remove the fd of the supplied procinfo from the list of fds used
770 for poll/select operations.
771 */
772
de43d7d0
SG		 773static void
774remove_fd (pi)
775 struct procinfo *pi;
776{
777 int i;
778
779 for (i = 0; i < num_poll_list; i++)
780 {
234a732d 781 if (poll_list[i].fd == pi->ctl_fd)
de43d7d0
SG		 782 {
783 if (i != num_poll_list - 1)
8fc2b417 784 memcpy (poll_list + i, poll_list + i + 1,
de43d7d0
SG		 785 (num_poll_list - i - 1) * sizeof (struct pollfd));
786
787 num_poll_list--;
788
789 if (num_poll_list == 0)
790 free (poll_list);
791 else
792 poll_list = (struct pollfd *) xrealloc (poll_list,
793 num_poll_list
794 * sizeof (struct pollfd));
795 return;
796 }
797 }
798}
799
234a732d
GN		 800/*
801
802LOCAL FUNCTION
803
804 procfs_read_status - get procfs fd status
805
806SYNOPSIS
807
808 static int procfs_read_status (pi) struct procinfo *pi;
809
810DESCRIPTION
811
812 Given a pointer to a procinfo struct, get the status of
813 the status_fd in the appropriate way. Returns 0 on failure,
814 1 on success.
815 */
816
817static int
818procfs_read_status (pi)
819 struct procinfo *pi;
820{
821#ifdef PROCFS_USE_READ_WRITE
822 if ((lseek (pi->status_fd, 0, SEEK_SET) < 0) ||
823 (read (pi->status_fd, (char *) &pi->prstatus,
824 sizeof (gdb_prstatus_t)) != sizeof (gdb_prstatus_t)))
825#else
826 if (ioctl (pi->status_fd, PIOCSTATUS, &pi->prstatus) < 0)
827#endif
828 return 0;
829 else
830 return 1;
831}
832
833/*
834
835LOCAL FUNCTION
836
837 procfs_write_pcwstop - send a PCWSTOP to procfs fd
838
839SYNOPSIS
840
841 static int procfs_write_pcwstop (pi) struct procinfo *pi;
842
843DESCRIPTION
844
845 Given a pointer to a procinfo struct, send a PCWSTOP to
846 the ctl_fd in the appropriate way. Returns 0 on failure,
847 1 on success.
848 */
849
850static int
851procfs_write_pcwstop (pi)
852 struct procinfo *pi;
853{
854#ifdef PROCFS_USE_READ_WRITE
855 long cmd = PCWSTOP;
856 if (write (pi->ctl_fd, (char *) &cmd, sizeof (long)) < 0)
857#else
858 if (ioctl (pi->ctl_fd, PIOCWSTOP, &pi->prstatus) < 0)
859#endif
860 return 0;
861 else
862 return 1;
863}
864
865/*
866
867LOCAL FUNCTION
868
869 procfs_write_pckill - send a kill to procfs fd
870
871SYNOPSIS
872
873 static void procfs_write_pckill (pi) struct procinfo *pi;
874
875DESCRIPTION
876
877 Given a pointer to a procinfo struct, send a kill to
878 the ctl_fd in the appropriate way. Returns 0 on failure,
879 1 on success.
880 */
881
882static void
883procfs_write_pckill (pi)
884 struct procinfo *pi;
885{
886#ifdef PROCFS_USE_READ_WRITE
887 struct proc_ctl pctl;
888 pctl.cmd = PCKILL;
889 pctl.data = SIGKILL;
890 write (pi->ctl_fd, &pctl, sizeof (struct proc_ctl));
891#else
892 int signo = SIGKILL;
893 ioctl (pi->ctl_fd, PIOCKILL, &signo);
894#endif
895}
896
7c5d526e
SG		 897static struct procinfo *
898wait_fd ()
899{
f14465c3 900 struct procinfo *pi, *next_pi;
b607efe7 901#ifndef LOSING_POLL
7c5d526e
SG		 902 int num_fds;
903 int i;
b607efe7 904#endif
de43d7d0 905
1e75b5f5 906 set_sigint_trap (); /* Causes SIGINT to be passed on to the
7c5d526e 907 attached process. */
429f1c9f 908 set_sigio_trap ();
de43d7d0 909
f14465c3 910 wait_again:
7c5d526e 911#ifndef LOSING_POLL
e172af81
FF		 912 while (1)
913 {
914 num_fds = poll (poll_list, num_poll_list, -1);
915 if (num_fds > 0)
916 break;
917 if (num_fds < 0 && errno == EINTR)
918 continue;
919 print_sys_errmsg ("poll failed", errno);
920 error ("Poll failed, returned %d", num_fds);
921 }
234a732d 922#else /* LOSING_POLL */
7c5d526e 923 pi = current_procinfo;
de43d7d0 924
234a732d 925 while (!procfs_write_pcwstop (pi))
7c5d526e 926 {
cef0333e
PS		 927 if (errno == ENOENT)
928 {
929 /* Process exited. */
930 pi->prstatus.pr_flags = 0;
931 break;
932 }
933 else if (errno != EINTR)
8afd05c0
JK		 934 {
935 print_sys_errmsg (pi->pathname, errno);
234a732d 936 error ("procfs_write_pcwstop failed");
8afd05c0 937 }
7c5d526e 938 }
fb63d460 939 pi->had_event = 1;
234a732d 940#endif /* LOSING_POLL */
7c5d526e 941
1e75b5f5 942 clear_sigint_trap ();
429f1c9f 943 clear_sigio_trap ();
de43d7d0 944
7c5d526e 945#ifndef LOSING_POLL
de43d7d0 946
7c5d526e
SG		 947 for (i = 0; i < num_poll_list && num_fds > 0; i++)
948 {
3780c337
MS		 949 if (0 == (poll_list[i].revents &
950 (POLLWRNORM | POLLPRI | POLLERR | POLLHUP | POLLNVAL)))
7c5d526e 951 continue;
f14465c3 952 for (pi = procinfo_list; pi; pi = next_pi)
7c5d526e 953 {
f14465c3 954 next_pi = pi->next;
234a732d 955 if (poll_list[i].fd == pi->ctl_fd)
7c5d526e 956 {
f14465c3
MS		 957 num_fds--;
958 if ((poll_list[i].revents & POLLHUP) != 0 ||
959 !procfs_read_status(pi))
960 { /* The LWP has apparently terminated. */
1e50f1b4
JM		 961 if (num_poll_list <= 1)
962 {
963 pi->prstatus.pr_flags = 0;
964 pi->had_event = 1;
965 break;
966 }
3780c337 967 if (info_verbose)
f14465c3 968 printf_filtered ("LWP %d exited.\n",
3780c337 969 (pi->pid >> 16) & 0xffff);
f14465c3
MS		 970 close_proc_file (pi);
971 if (num_fds != 0)
972 continue; /* already another event to process */
973 else
974 goto wait_again; /* wait for another event */
7c5d526e 975 }
7c5d526e
SG		 976 pi->had_event = 1;
977 break;
978 }
979 }
980 if (!pi)
8fc2b417 981 error ("wait_fd: Couldn't find procinfo for fd %d\n",
7c5d526e
SG		 982 poll_list[i].fd);
983 }
984#endif /* LOSING_POLL */
985
986 return pi;
987}
de43d7d0
SG		 988
989/*
990
cc221e76
FF		 991LOCAL FUNCTION
992
993 lookupdesc -- translate a value to a summary desc string
994
995SYNOPSIS
996
997 static char *lookupdesc (struct trans *transp, unsigned int val);
998
999DESCRIPTION
1000
1001 Given a pointer to a translation table and a value to be translated,
1002 lookup the desc string and return it.
1003 */
1004
1005static char *
1006lookupdesc (transp, val)
1007 struct trans *transp;
1008 unsigned int val;
1009{
1010 char *desc;
1011
1012 for (desc = NULL; transp -> name != NULL; transp++)
1013 {
1014 if (transp -> value == val)
1015 {
1016 desc = transp -> desc;
1017 break;
1018 }
1019 }
1020
1021 /* Didn't find a translation for the specified value, set a default one. */
1022
1023 if (desc == NULL)
1024 {
1025 desc = "Unknown";
1026 }
1027 return (desc);
1028}
1029
1030/*
1031
1032LOCAL FUNCTION
1033
1034 lookupname -- translate a value to symbolic name
1035
1036SYNOPSIS
1037
1038 static char *lookupname (struct trans *transp, unsigned int val,
1039 char *prefix);
1040
1041DESCRIPTION
1042
1043 Given a pointer to a translation table, a value to be translated,
1044 and a default prefix to return if the value can't be translated,
1045 match the value with one of the translation table entries and
1046 return a pointer to the symbolic name.
1047
1048 If no match is found it just returns the value as a printable string,
1049 with the given prefix. The previous such value, if any, is freed
1050 at this time.
1051 */
1052
1053static char *
1054lookupname (transp, val, prefix)
1055 struct trans *transp;
1056 unsigned int val;
1057 char *prefix;
1058{
1059 static char *locbuf;
1060 char *name;
1061
1062 for (name = NULL; transp -> name != NULL; transp++)
1063 {
1064 if (transp -> value == val)
1065 {
1066 name = transp -> name;
1067 break;
1068 }
1069 }
1070
1071 /* Didn't find a translation for the specified value, build a default
1072 one using the specified prefix and return it. The lifetime of
1073 the value is only until the next one is needed. */
1074
1075 if (name == NULL)
1076 {
1077 if (locbuf != NULL)
1078 {
1079 free (locbuf);
1080 }
1081 locbuf = xmalloc (strlen (prefix) + 16);
4ed3a9ea 1082 sprintf (locbuf, "%s %u", prefix, val);
cc221e76
FF		 1083 name = locbuf;
1084 }
1085 return (name);
1086}
1087
1088static char *
1089sigcodename (sip)
1090 siginfo_t *sip;
1091{
1092 struct sigcode *scp;
1093 char *name = NULL;
1094 static char locbuf[32];
1095
1096 for (scp = siginfo_table; scp -> codename != NULL; scp++)
1097 {
1098 if ((scp -> signo == sip -> si_signo) &&
1099 (scp -> code == sip -> si_code))
1100 {
1101 name = scp -> codename;
1102 break;
1103 }
1104 }
1105 if (name == NULL)
1106 {
4ed3a9ea 1107 sprintf (locbuf, "sigcode %u", sip -> si_signo);
cc221e76
FF		 1108 name = locbuf;
1109 }
1110 return (name);
1111}
1112
3fbdd536
JG		 1113static char *
1114sigcodedesc (sip)
cc221e76
FF		 1115 siginfo_t *sip;
1116{
1117 struct sigcode *scp;
1118 char *desc = NULL;
1119
1120 for (scp = siginfo_table; scp -> codename != NULL; scp++)
1121 {
1122 if ((scp -> signo == sip -> si_signo) &&
1123 (scp -> code == sip -> si_code))
1124 {
1125 desc = scp -> desc;
1126 break;
1127 }
1128 }
1129 if (desc == NULL)
1130 {
1131 desc = "Unrecognized signal or trap use";
1132 }
1133 return (desc);
1134}
1135
1136/*
1137
1138LOCAL FUNCTION
1139
1140 syscallname - translate a system call number into a system call name
1141
1142SYNOPSIS
1143
1144 char *syscallname (int syscallnum)
1145
1146DESCRIPTION
1147
1148 Given a system call number, translate it into the printable name
1149 of a system call, or into "syscall <num>" if it is an unknown
1150 number.
1151 */
1152
1153static char *
1154syscallname (syscallnum)
1155 int syscallnum;
1156{
1157 static char locbuf[32];
cc221e76 1158
8fc2b417
SG		 1159 if (syscallnum >= 0 && syscallnum < MAX_SYSCALLS
1160 && syscall_table[syscallnum] != NULL)
1161 return syscall_table[syscallnum];
cc221e76
FF		 1162 else
1163 {
4ed3a9ea 1164 sprintf (locbuf, "syscall %u", syscallnum);
8fc2b417 1165 return locbuf;
cc221e76 1166 }
cc221e76
FF		 1167}
1168
1169/*
1170
1171LOCAL FUNCTION
1172
1173 init_syscall_table - initialize syscall translation table
1174
1175SYNOPSIS
1176
1177 void init_syscall_table (void)
1178
1179DESCRIPTION
1180
1181 Dynamically initialize the translation table to convert system
1182 call numbers into printable system call names. Done once per
1183 gdb run, on initialization.
1184
1185NOTES
1186
1187 This is awfully ugly, but preprocessor tricks to make it prettier
1188 tend to be nonportable.
1189 */
1190
1191static void
1192init_syscall_table ()
1193{
cc221e76
FF		 1194#if defined (SYS_exit)
1195 syscall_table[SYS_exit] = "exit";
1196#endif
1197#if defined (SYS_fork)
1198 syscall_table[SYS_fork] = "fork";
1199#endif
1200#if defined (SYS_read)
1201 syscall_table[SYS_read] = "read";
1202#endif
1203#if defined (SYS_write)
1204 syscall_table[SYS_write] = "write";
1205#endif
1206#if defined (SYS_open)
1207 syscall_table[SYS_open] = "open";
1208#endif
1209#if defined (SYS_close)
1210 syscall_table[SYS_close] = "close";
1211#endif
1212#if defined (SYS_wait)
1213 syscall_table[SYS_wait] = "wait";
1214#endif
1215#if defined (SYS_creat)
1216 syscall_table[SYS_creat] = "creat";
1217#endif
1218#if defined (SYS_link)
1219 syscall_table[SYS_link] = "link";
1220#endif
1221#if defined (SYS_unlink)
1222 syscall_table[SYS_unlink] = "unlink";
1223#endif
1224#if defined (SYS_exec)
1225 syscall_table[SYS_exec] = "exec";
1226#endif
1227#if defined (SYS_execv)
1228 syscall_table[SYS_execv] = "execv";
1229#endif
1230#if defined (SYS_execve)
1231 syscall_table[SYS_execve] = "execve";
1232#endif
1233#if defined (SYS_chdir)
1234 syscall_table[SYS_chdir] = "chdir";
1235#endif
1236#if defined (SYS_time)
1237 syscall_table[SYS_time] = "time";
1238#endif
1239#if defined (SYS_mknod)
1240 syscall_table[SYS_mknod] = "mknod";
1241#endif
1242#if defined (SYS_chmod)
1243 syscall_table[SYS_chmod] = "chmod";
1244#endif
1245#if defined (SYS_chown)
1246 syscall_table[SYS_chown] = "chown";
1247#endif
1248#if defined (SYS_brk)
1249 syscall_table[SYS_brk] = "brk";
1250#endif
1251#if defined (SYS_stat)
1252 syscall_table[SYS_stat] = "stat";
1253#endif
1254#if defined (SYS_lseek)
1255 syscall_table[SYS_lseek] = "lseek";
1256#endif
1257#if defined (SYS_getpid)
1258 syscall_table[SYS_getpid] = "getpid";
1259#endif
1260#if defined (SYS_mount)
1261 syscall_table[SYS_mount] = "mount";
1262#endif
1263#if defined (SYS_umount)
1264 syscall_table[SYS_umount] = "umount";
1265#endif
1266#if defined (SYS_setuid)
1267 syscall_table[SYS_setuid] = "setuid";
1268#endif
1269#if defined (SYS_getuid)
1270 syscall_table[SYS_getuid] = "getuid";
1271#endif
1272#if defined (SYS_stime)
1273 syscall_table[SYS_stime] = "stime";
1274#endif
1275#if defined (SYS_ptrace)
1276 syscall_table[SYS_ptrace] = "ptrace";
1277#endif
1278#if defined (SYS_alarm)
1279 syscall_table[SYS_alarm] = "alarm";
1280#endif
1281#if defined (SYS_fstat)
1282 syscall_table[SYS_fstat] = "fstat";
1283#endif
1284#if defined (SYS_pause)
1285 syscall_table[SYS_pause] = "pause";
1286#endif
1287#if defined (SYS_utime)
1288 syscall_table[SYS_utime] = "utime";
1289#endif
1290#if defined (SYS_stty)
1291 syscall_table[SYS_stty] = "stty";
1292#endif
1293#if defined (SYS_gtty)
1294 syscall_table[SYS_gtty] = "gtty";
1295#endif
1296#if defined (SYS_access)
1297 syscall_table[SYS_access] = "access";
1298#endif
1299#if defined (SYS_nice)
1300 syscall_table[SYS_nice] = "nice";
1301#endif
1302#if defined (SYS_statfs)
1303 syscall_table[SYS_statfs] = "statfs";
1304#endif
1305#if defined (SYS_sync)
1306 syscall_table[SYS_sync] = "sync";
1307#endif
1308#if defined (SYS_kill)
1309 syscall_table[SYS_kill] = "kill";
1310#endif
1311#if defined (SYS_fstatfs)
1312 syscall_table[SYS_fstatfs] = "fstatfs";
1313#endif
1314#if defined (SYS_pgrpsys)
1315 syscall_table[SYS_pgrpsys] = "pgrpsys";
1316#endif
1317#if defined (SYS_xenix)
1318 syscall_table[SYS_xenix] = "xenix";
1319#endif
1320#if defined (SYS_dup)
1321 syscall_table[SYS_dup] = "dup";
1322#endif
1323#if defined (SYS_pipe)
1324 syscall_table[SYS_pipe] = "pipe";
1325#endif
1326#if defined (SYS_times)
1327 syscall_table[SYS_times] = "times";
1328#endif
1329#if defined (SYS_profil)
1330 syscall_table[SYS_profil] = "profil";
1331#endif
1332#if defined (SYS_plock)
1333 syscall_table[SYS_plock] = "plock";
1334#endif
1335#if defined (SYS_setgid)
1336 syscall_table[SYS_setgid] = "setgid";
1337#endif
1338#if defined (SYS_getgid)
1339 syscall_table[SYS_getgid] = "getgid";
1340#endif
1341#if defined (SYS_signal)
1342 syscall_table[SYS_signal] = "signal";
1343#endif
1344#if defined (SYS_msgsys)
1345 syscall_table[SYS_msgsys] = "msgsys";
1346#endif
1347#if defined (SYS_sys3b)
1348 syscall_table[SYS_sys3b] = "sys3b";
1349#endif
234a732d
GN		 1350#if defined (SYS_sysi86)
1351 syscall_table[SYS_sysi86] = "sysi86";
1352#endif
cc221e76
FF		 1353#if defined (SYS_acct)
1354 syscall_table[SYS_acct] = "acct";
1355#endif
1356#if defined (SYS_shmsys)
1357 syscall_table[SYS_shmsys] = "shmsys";
1358#endif
1359#if defined (SYS_semsys)
1360 syscall_table[SYS_semsys] = "semsys";
1361#endif
1362#if defined (SYS_ioctl)
1363 syscall_table[SYS_ioctl] = "ioctl";
1364#endif
1365#if defined (SYS_uadmin)
1366 syscall_table[SYS_uadmin] = "uadmin";
1367#endif
1368#if defined (SYS_utssys)
1369 syscall_table[SYS_utssys] = "utssys";
1370#endif
1371#if defined (SYS_fsync)
1372 syscall_table[SYS_fsync] = "fsync";
1373#endif
1374#if defined (SYS_umask)
1375 syscall_table[SYS_umask] = "umask";
1376#endif
1377#if defined (SYS_chroot)
1378 syscall_table[SYS_chroot] = "chroot";
1379#endif
1380#if defined (SYS_fcntl)
1381 syscall_table[SYS_fcntl] = "fcntl";
1382#endif
1383#if defined (SYS_ulimit)
1384 syscall_table[SYS_ulimit] = "ulimit";
1385#endif
1386#if defined (SYS_rfsys)
1387 syscall_table[SYS_rfsys] = "rfsys";
1388#endif
1389#if defined (SYS_rmdir)
1390 syscall_table[SYS_rmdir] = "rmdir";
1391#endif
1392#if defined (SYS_mkdir)
1393 syscall_table[SYS_mkdir] = "mkdir";
1394#endif
1395#if defined (SYS_getdents)
1396 syscall_table[SYS_getdents] = "getdents";
1397#endif
1398#if defined (SYS_sysfs)
1399 syscall_table[SYS_sysfs] = "sysfs";
1400#endif
1401#if defined (SYS_getmsg)
1402 syscall_table[SYS_getmsg] = "getmsg";
1403#endif
1404#if defined (SYS_putmsg)
1405 syscall_table[SYS_putmsg] = "putmsg";
1406#endif
1407#if defined (SYS_poll)
1408 syscall_table[SYS_poll] = "poll";
1409#endif
1410#if defined (SYS_lstat)
1411 syscall_table[SYS_lstat] = "lstat";
1412#endif
1413#if defined (SYS_symlink)
1414 syscall_table[SYS_symlink] = "symlink";
1415#endif
1416#if defined (SYS_readlink)
1417 syscall_table[SYS_readlink] = "readlink";
1418#endif
1419#if defined (SYS_setgroups)
1420 syscall_table[SYS_setgroups] = "setgroups";
1421#endif
1422#if defined (SYS_getgroups)
1423 syscall_table[SYS_getgroups] = "getgroups";
1424#endif
1425#if defined (SYS_fchmod)
1426 syscall_table[SYS_fchmod] = "fchmod";
1427#endif
1428#if defined (SYS_fchown)
1429 syscall_table[SYS_fchown] = "fchown";
1430#endif
1431#if defined (SYS_sigprocmask)
1432 syscall_table[SYS_sigprocmask] = "sigprocmask";
1433#endif
1434#if defined (SYS_sigsuspend)
1435 syscall_table[SYS_sigsuspend] = "sigsuspend";
1436#endif
1437#if defined (SYS_sigaltstack)
1438 syscall_table[SYS_sigaltstack] = "sigaltstack";
1439#endif
1440#if defined (SYS_sigaction)
1441 syscall_table[SYS_sigaction] = "sigaction";
1442#endif
1443#if defined (SYS_sigpending)
1444 syscall_table[SYS_sigpending] = "sigpending";
1445#endif
1446#if defined (SYS_context)
1447 syscall_table[SYS_context] = "context";
1448#endif
1449#if defined (SYS_evsys)
1450 syscall_table[SYS_evsys] = "evsys";
1451#endif
1452#if defined (SYS_evtrapret)
1453 syscall_table[SYS_evtrapret] = "evtrapret";
1454#endif
1455#if defined (SYS_statvfs)
1456 syscall_table[SYS_statvfs] = "statvfs";
1457#endif
1458#if defined (SYS_fstatvfs)
1459 syscall_table[SYS_fstatvfs] = "fstatvfs";
1460#endif
1461#if defined (SYS_nfssys)
1462 syscall_table[SYS_nfssys] = "nfssys";
1463#endif
1464#if defined (SYS_waitsys)
1465 syscall_table[SYS_waitsys] = "waitsys";
1466#endif
1467#if defined (SYS_sigsendsys)
1468 syscall_table[SYS_sigsendsys] = "sigsendsys";
1469#endif
1470#if defined (SYS_hrtsys)
1471 syscall_table[SYS_hrtsys] = "hrtsys";
1472#endif
1473#if defined (SYS_acancel)
1474 syscall_table[SYS_acancel] = "acancel";
1475#endif
1476#if defined (SYS_async)
1477 syscall_table[SYS_async] = "async";
1478#endif
1479#if defined (SYS_priocntlsys)
1480 syscall_table[SYS_priocntlsys] = "priocntlsys";
1481#endif
1482#if defined (SYS_pathconf)
1483 syscall_table[SYS_pathconf] = "pathconf";
1484#endif
1485#if defined (SYS_mincore)
1486 syscall_table[SYS_mincore] = "mincore";
1487#endif
1488#if defined (SYS_mmap)
1489 syscall_table[SYS_mmap] = "mmap";
1490#endif
1491#if defined (SYS_mprotect)
1492 syscall_table[SYS_mprotect] = "mprotect";
1493#endif
1494#if defined (SYS_munmap)
1495 syscall_table[SYS_munmap] = "munmap";
1496#endif
1497#if defined (SYS_fpathconf)
1498 syscall_table[SYS_fpathconf] = "fpathconf";
1499#endif
1500#if defined (SYS_vfork)
1501 syscall_table[SYS_vfork] = "vfork";
1502#endif
1503#if defined (SYS_fchdir)
1504 syscall_table[SYS_fchdir] = "fchdir";
1505#endif
1506#if defined (SYS_readv)
1507 syscall_table[SYS_readv] = "readv";
1508#endif
1509#if defined (SYS_writev)
1510 syscall_table[SYS_writev] = "writev";
1511#endif
1512#if defined (SYS_xstat)
1513 syscall_table[SYS_xstat] = "xstat";
1514#endif
1515#if defined (SYS_lxstat)
1516 syscall_table[SYS_lxstat] = "lxstat";
1517#endif
1518#if defined (SYS_fxstat)
1519 syscall_table[SYS_fxstat] = "fxstat";
1520#endif
1521#if defined (SYS_xmknod)
1522 syscall_table[SYS_xmknod] = "xmknod";
1523#endif
1524#if defined (SYS_clocal)
1525 syscall_table[SYS_clocal] = "clocal";
1526#endif
1527#if defined (SYS_setrlimit)
1528 syscall_table[SYS_setrlimit] = "setrlimit";
1529#endif
1530#if defined (SYS_getrlimit)
1531 syscall_table[SYS_getrlimit] = "getrlimit";
1532#endif
1533#if defined (SYS_lchown)
1534 syscall_table[SYS_lchown] = "lchown";
1535#endif
1536#if defined (SYS_memcntl)
1537 syscall_table[SYS_memcntl] = "memcntl";
1538#endif
1539#if defined (SYS_getpmsg)
1540 syscall_table[SYS_getpmsg] = "getpmsg";
1541#endif
1542#if defined (SYS_putpmsg)
1543 syscall_table[SYS_putpmsg] = "putpmsg";
1544#endif
1545#if defined (SYS_rename)
1546 syscall_table[SYS_rename] = "rename";
1547#endif
1548#if defined (SYS_uname)
1549 syscall_table[SYS_uname] = "uname";
1550#endif
1551#if defined (SYS_setegid)
1552 syscall_table[SYS_setegid] = "setegid";
1553#endif
1554#if defined (SYS_sysconfig)
1555 syscall_table[SYS_sysconfig] = "sysconfig";
1556#endif
1557#if defined (SYS_adjtime)
1558 syscall_table[SYS_adjtime] = "adjtime";
1559#endif
1560#if defined (SYS_systeminfo)
1561 syscall_table[SYS_systeminfo] = "systeminfo";
1562#endif
1563#if defined (SYS_seteuid)
1564 syscall_table[SYS_seteuid] = "seteuid";
1565#endif
de43d7d0
SG		 1566#if defined (SYS_sproc)
1567 syscall_table[SYS_sproc] = "sproc";
1568#endif
234a732d
GN		 1569#if defined (SYS_keyctl)
1570 syscall_table[SYS_keyctl] = "keyctl";
1571#endif
1572#if defined (SYS_secsys)
1573 syscall_table[SYS_secsys] = "secsys";
1574#endif
1575#if defined (SYS_filepriv)
1576 syscall_table[SYS_filepriv] = "filepriv";
1577#endif
1578#if defined (SYS_procpriv)
1579 syscall_table[SYS_procpriv] = "procpriv";
1580#endif
1581#if defined (SYS_devstat)
1582 syscall_table[SYS_devstat] = "devstat";
1583#endif
1584#if defined (SYS_aclipc)
1585 syscall_table[SYS_aclipc] = "aclipc";
1586#endif
1587#if defined (SYS_fdevstat)
1588 syscall_table[SYS_fdevstat] = "fdevstat";
1589#endif
1590#if defined (SYS_flvlfile)
1591 syscall_table[SYS_flvlfile] = "flvlfile";
1592#endif
1593#if defined (SYS_lvlfile)
1594 syscall_table[SYS_lvlfile] = "lvlfile";
1595#endif
1596#if defined (SYS_lvlequal)
1597 syscall_table[SYS_lvlequal] = "lvlequal";
1598#endif
1599#if defined (SYS_lvlproc)
1600 syscall_table[SYS_lvlproc] = "lvlproc";
1601#endif
1602#if defined (SYS_lvlipc)
1603 syscall_table[SYS_lvlipc] = "lvlipc";
1604#endif
1605#if defined (SYS_acl)
1606 syscall_table[SYS_acl] = "acl";
1607#endif
1608#if defined (SYS_auditevt)
1609 syscall_table[SYS_auditevt] = "auditevt";
1610#endif
1611#if defined (SYS_auditctl)
1612 syscall_table[SYS_auditctl] = "auditctl";
1613#endif
1614#if defined (SYS_auditdmp)
1615 syscall_table[SYS_auditdmp] = "auditdmp";
1616#endif
1617#if defined (SYS_auditlog)
1618 syscall_table[SYS_auditlog] = "auditlog";
1619#endif
1620#if defined (SYS_auditbuf)
1621 syscall_table[SYS_auditbuf] = "auditbuf";
1622#endif
1623#if defined (SYS_lvldom)
1624 syscall_table[SYS_lvldom] = "lvldom";
1625#endif
1626#if defined (SYS_lvlvfs)
1627 syscall_table[SYS_lvlvfs] = "lvlvfs";
1628#endif
1629#if defined (SYS_mkmld)
1630 syscall_table[SYS_mkmld] = "mkmld";
1631#endif
1632#if defined (SYS_mldmode)
1633 syscall_table[SYS_mldmode] = "mldmode";
1634#endif
1635#if defined (SYS_secadvise)
1636 syscall_table[SYS_secadvise] = "secadvise";
1637#endif
1638#if defined (SYS_online)
1639 syscall_table[SYS_online] = "online";
1640#endif
1641#if defined (SYS_setitimer)
1642 syscall_table[SYS_setitimer] = "setitimer";
1643#endif
1644#if defined (SYS_getitimer)
1645 syscall_table[SYS_getitimer] = "getitimer";
1646#endif
1647#if defined (SYS_gettimeofday)
1648 syscall_table[SYS_gettimeofday] = "gettimeofday";
1649#endif
1650#if defined (SYS_settimeofday)
1651 syscall_table[SYS_settimeofday] = "settimeofday";
1652#endif
3780c337
MS		 1653#if defined (SYS_lwp_create)
1654 syscall_table[SYS_lwp_create] = "_lwp_create";
234a732d 1655#endif
3780c337
MS		 1656#if defined (SYS_lwp_exit)
1657 syscall_table[SYS_lwp_exit] = "_lwp_exit";
234a732d 1658#endif
3780c337
MS		 1659#if defined (SYS_lwp_wait)
1660 syscall_table[SYS_lwp_wait] = "_lwp_wait";
234a732d 1661#endif
3780c337
MS		 1662#if defined (SYS_lwp_self)
1663 syscall_table[SYS_lwp_self] = "_lwp_self";
234a732d 1664#endif
3780c337
MS		 1665#if defined (SYS_lwp_info)
1666 syscall_table[SYS_lwp_info] = "_lwp_info";
234a732d 1667#endif
3780c337
MS		 1668#if defined (SYS_lwp_private)
1669 syscall_table[SYS_lwp_private] = "_lwp_private";
234a732d
GN		 1670#endif
1671#if defined (SYS_processor_bind)
1672 syscall_table[SYS_processor_bind] = "processor_bind";
1673#endif
1674#if defined (SYS_processor_exbind)
1675 syscall_table[SYS_processor_exbind] = "processor_exbind";
1676#endif
1677#if defined (SYS_prepblock)
1678 syscall_table[SYS_prepblock] = "prepblock";
1679#endif
1680#if defined (SYS_block)
1681 syscall_table[SYS_block] = "block";
1682#endif
1683#if defined (SYS_rdblock)
1684 syscall_table[SYS_rdblock] = "rdblock";
1685#endif
1686#if defined (SYS_unblock)
1687 syscall_table[SYS_unblock] = "unblock";
1688#endif
1689#if defined (SYS_cancelblock)
1690 syscall_table[SYS_cancelblock] = "cancelblock";
1691#endif
1692#if defined (SYS_pread)
1693 syscall_table[SYS_pread] = "pread";
1694#endif
1695#if defined (SYS_pwrite)
1696 syscall_table[SYS_pwrite] = "pwrite";
1697#endif
1698#if defined (SYS_truncate)
1699 syscall_table[SYS_truncate] = "truncate";
1700#endif
1701#if defined (SYS_ftruncate)
1702 syscall_table[SYS_ftruncate] = "ftruncate";
1703#endif
3780c337
MS		 1704#if defined (SYS_lwp_kill)
1705 syscall_table[SYS_lwp_kill] = "_lwp_kill";
234a732d
GN		 1706#endif
1707#if defined (SYS_sigwait)
1708 syscall_table[SYS_sigwait] = "sigwait";
1709#endif
1710#if defined (SYS_fork1)
1711 syscall_table[SYS_fork1] = "fork1";
1712#endif
1713#if defined (SYS_forkall)
1714 syscall_table[SYS_forkall] = "forkall";
1715#endif
1716#if defined (SYS_modload)
1717 syscall_table[SYS_modload] = "modload";
1718#endif
1719#if defined (SYS_moduload)
1720 syscall_table[SYS_moduload] = "moduload";
1721#endif
1722#if defined (SYS_modpath)
1723 syscall_table[SYS_modpath] = "modpath";
1724#endif
1725#if defined (SYS_modstat)
1726 syscall_table[SYS_modstat] = "modstat";
1727#endif
1728#if defined (SYS_modadm)
1729 syscall_table[SYS_modadm] = "modadm";
1730#endif
1731#if defined (SYS_getksym)
1732 syscall_table[SYS_getksym] = "getksym";
1733#endif
3780c337
MS		 1734#if defined (SYS_lwp_suspend)
1735 syscall_table[SYS_lwp_suspend] = "_lwp_suspend";
234a732d 1736#endif
3780c337
MS		 1737#if defined (SYS_lwp_continue)
1738 syscall_table[SYS_lwp_continue] = "_lwp_continue";
234a732d
GN		 1739#endif
1740#if defined (SYS_priocntllst)
1741 syscall_table[SYS_priocntllst] = "priocntllst";
1742#endif
1743#if defined (SYS_sleep)
1744 syscall_table[SYS_sleep] = "sleep";
1745#endif
1746#if defined (SYS_lwp_sema_wait)
3780c337 1747 syscall_table[SYS_lwp_sema_wait] = "_lwp_sema_wait";
234a732d
GN		 1748#endif
1749#if defined (SYS_lwp_sema_post)
3780c337 1750 syscall_table[SYS_lwp_sema_post] = "_lwp_sema_post";
234a732d
GN		 1751#endif
1752#if defined (SYS_lwp_sema_trywait)
1753 syscall_table[SYS_lwp_sema_trywait] = "lwp_sema_trywait";
1754#endif
1e50f1b4
JM		 1755#if defined(SYS_fstatvfs64)
1756 syscall_table[SYS_fstatvfs64] = "fstatvfs64";
1757#endif
1758#if defined(SYS_statvfs64)
1759 syscall_table[SYS_statvfs64] = "statvfs64";
1760#endif
1761#if defined(SYS_ftruncate64)
1762 syscall_table[SYS_ftruncate64] = "ftruncate64";
1763#endif
1764#if defined(SYS_truncate64)
1765 syscall_table[SYS_truncate64] = "truncate64";
1766#endif
1767#if defined(SYS_getrlimit64)
1768 syscall_table[SYS_getrlimit64] = "getrlimit64";
1769#endif
1770#if defined(SYS_setrlimit64)
1771 syscall_table[SYS_setrlimit64] = "setrlimit64";
1772#endif
1773#if defined(SYS_lseek64)
1774 syscall_table[SYS_lseek64] = "lseek64";
1775#endif
1776#if defined(SYS_mmap64)
1777 syscall_table[SYS_mmap64] = "mmap64";
1778#endif
1779#if defined(SYS_pread64)
1780 syscall_table[SYS_pread64] = "pread64";
1781#endif
1782#if defined(SYS_creat64)
1783 syscall_table[SYS_creat64] = "creat64";
1784#endif
1785#if defined(SYS_dshmsys)
1786 syscall_table[SYS_dshmsys] = "dshmsys";
1787#endif
1788#if defined(SYS_invlpg)
1789 syscall_table[SYS_invlpg] = "invlpg";
1790#endif
1791#if defined(SYS_cg_ids)
1792 syscall_table[SYS_cg_ids] = "cg_ids";
1793#endif
1794#if defined(SYS_cg_processors)
1795 syscall_table[SYS_cg_processors] = "cg_processors";
1796#endif
1797#if defined(SYS_cg_info)
1798 syscall_table[SYS_cg_info] = "cg_info";
1799#endif
1800#if defined(SYS_cg_bind)
1801 syscall_table[SYS_cg_bind] = "cg_bind";
1802#endif
1803#if defined(SYS_cg_current)
1804 syscall_table[SYS_cg_current] = "cg_current";
1805#endif
1806#if defined(SYS_cg_memloc)
1807 syscall_table[SYS_cg_memloc] = "cg_memloc";
1808#endif
cc221e76 1809}
35f5886e
FF		 1810
1811/*
1812
3fbdd536 1813LOCAL FUNCTION
35f5886e 1814
3fbdd536 1815 procfs_kill_inferior - kill any currently inferior
35f5886e
FF		 1816
1817SYNOPSIS
1818
3fbdd536 1819 void procfs_kill_inferior (void)
35f5886e
FF		 1820
1821DESCRIPTION
1822
1823 Kill any current inferior.
1824
1825NOTES
1826
1827 Kills even attached inferiors. Presumably the user has already
1828 been prompted that the inferior is an attached one rather than
1829 one started by gdb. (FIXME?)
1830
1831*/
1832
3fbdd536
JG		 1833static void
1834procfs_kill_inferior ()
35f5886e 1835{
de43d7d0 1836 target_mourn_inferior ();
35f5886e
FF		 1837}
1838
1839/*
1840
1841LOCAL FUNCTION
1842
1843 unconditionally_kill_inferior - terminate the inferior
1844
1845SYNOPSIS
1846
de43d7d0 1847 static void unconditionally_kill_inferior (struct procinfo *)
35f5886e
FF		 1848
1849DESCRIPTION
1850
de43d7d0 1851 Kill the specified inferior.
35f5886e
FF		 1852
1853NOTE
1854
1855 A possibly useful enhancement would be to first try sending
1856 the inferior a terminate signal, politely asking it to commit
de43d7d0
SG		 1857 suicide, before we murder it (we could call that
1858 politely_kill_inferior()).
35f5886e
FF		 1859
1860*/
1861
1862static void
de43d7d0
SG		 1863unconditionally_kill_inferior (pi)
1864 struct procinfo *pi;
35f5886e 1865{
de43d7d0 1866 int ppid;
234a732d 1867 struct proc_ctl pctl;
35f5886e 1868
de43d7d0
SG		 1869 ppid = pi->prstatus.pr_ppid;
1870
b6753b3f
PS		 1871#ifdef PROCFS_NEED_CLEAR_CURSIG_FOR_KILL
1872 /* Alpha OSF/1-3.x procfs needs a clear of the current signal
1873 before the PIOCKILL, otherwise it might generate a corrupted core
1874 file for the inferior. */
234a732d 1875 ioctl (pi->ctl_fd, PIOCSSIG, NULL);
b6753b3f 1876#endif
2592eef8 1877#ifdef PROCFS_NEED_PIOCSSIG_FOR_KILL
b6753b3f 1878 /* Alpha OSF/1-2.x procfs needs a PIOCSSIG call with a SIGKILL signal
f5de4904
PS		 1879 to kill the inferior, otherwise it might remain stopped with a
1880 pending SIGKILL.
2592eef8
PS		 1881 We do not check the result of the PIOCSSIG, the inferior might have
1882 died already. */
1883 {
1884 struct siginfo newsiginfo;
1885
1886 memset ((char *) &newsiginfo, 0, sizeof (newsiginfo));
234a732d 1887 newsiginfo.si_signo = SIGKILL;
2592eef8
PS		 1888 newsiginfo.si_code = 0;
1889 newsiginfo.si_errno = 0;
1890 newsiginfo.si_pid = getpid ();
1891 newsiginfo.si_uid = getuid ();
234a732d 1892 ioctl (pi->ctl_fd, PIOCSSIG, &newsiginfo);
2592eef8 1893 }
234a732d
GN		 1894#else /* PROCFS_NEED_PIOCSSIG_FOR_KILL */
1895 procfs_write_pckill (pi);
1896#endif /* PROCFS_NEED_PIOCSSIG_FOR_KILL */
2592eef8 1897
de43d7d0
SG		 1898 close_proc_file (pi);
1899
1900/* Only wait() for our direct children. Our grandchildren zombies are killed
1901 by the death of their parents. */
1902
1903 if (ppid == getpid())
1904 wait ((int *) 0);
35f5886e
FF		 1905}
1906
1907/*
1908
3fbdd536 1909LOCAL FUNCTION
35f5886e 1910
3fbdd536 1911 procfs_xfer_memory -- copy data to or from inferior memory space
35f5886e
FF		 1912
1913SYNOPSIS
1914
3fbdd536 1915 int procfs_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len,
35f5886e
FF		 1916 int dowrite, struct target_ops target)
1917
1918DESCRIPTION
1919
1920 Copy LEN bytes to/from inferior's memory starting at MEMADDR
1921 from/to debugger memory starting at MYADDR. Copy from inferior
1922 if DOWRITE is zero or to inferior if DOWRITE is nonzero.
1923
1924 Returns the length copied, which is either the LEN argument or
3fbdd536 1925 zero. This xfer function does not do partial moves, since procfs_ops
35f5886e
FF		 1926 doesn't allow memory operations to cross below us in the target stack
1927 anyway.
1928
1929NOTES
1930
1931 The /proc interface makes this an almost trivial task.
1932 */
1933
3fbdd536
JG		 1934static int
1935procfs_xfer_memory (memaddr, myaddr, len, dowrite, target)
1ab3bf1b
JG		 1936 CORE_ADDR memaddr;
1937 char *myaddr;
1938 int len;
1939 int dowrite;
1940 struct target_ops *target; /* ignored */
35f5886e
FF		 1941{
1942 int nbytes = 0;
de43d7d0 1943 struct procinfo *pi;
35f5886e 1944
de43d7d0
SG		 1945 pi = current_procinfo;
1946
234a732d 1947 if (lseek(pi->as_fd, (off_t) memaddr, SEEK_SET) == (off_t) memaddr)
35f5886e
FF		 1948 {
1949 if (dowrite)
1950 {
234a732d 1951 nbytes = write (pi->as_fd, myaddr, len);
35f5886e
FF		 1952 }
1953 else
1954 {
234a732d 1955 nbytes = read (pi->as_fd, myaddr, len);
35f5886e
FF		 1956 }
1957 if (nbytes < 0)
1958 {
1959 nbytes = 0;
1960 }
1961 }
1962 return (nbytes);
1963}
1964
1965/*
1966
3fbdd536 1967LOCAL FUNCTION
35f5886e 1968
3fbdd536 1969 procfs_store_registers -- copy register values back to inferior
35f5886e
FF		 1970
1971SYNOPSIS
1972
3fbdd536 1973 void procfs_store_registers (int regno)
35f5886e
FF		 1974
1975DESCRIPTION
1976
1977 Store our current register values back into the inferior. If
1978 REGNO is -1 then store all the register, otherwise store just
1979 the value specified by REGNO.
1980
1981NOTES
1982
1983 If we are storing only a single register, we first have to get all
1984 the current values from the process, overwrite the desired register
1985 in the gregset with the one we want from gdb's registers, and then
1986 send the whole set back to the process. For writing all the
1987 registers, all we have to do is generate the gregset and send it to
1988 the process.
1989
1990 Also note that the process has to be stopped on an event of interest
1991 for this to work, which basically means that it has to have been
1992 run under the control of one of the other /proc ioctl calls and not
1993 ptrace. Since we don't use ptrace anyway, we don't worry about this
1994 fine point, but it is worth noting for future reference.
1995
1996 Gdb is confused about what this function is supposed to return.
1997 Some versions return a value, others return nothing. Some are
1998 declared to return a value and actually return nothing. Gdb ignores
1999 anything returned. (FIXME)
2000
2001 */
2002
3fbdd536
JG		 2003static void
2004procfs_store_registers (regno)
1ab3bf1b 2005 int regno;
35f5886e 2006{
de43d7d0 2007 struct procinfo *pi;
234a732d
GN		 2008#ifdef PROCFS_USE_READ_WRITE
2009 struct greg_ctl greg;
2010 struct fpreg_ctl fpreg;
2011#endif
de43d7d0
SG		 2012
2013 pi = current_procinfo;
2014
234a732d 2015#ifdef PROCFS_USE_READ_WRITE
35f5886e
FF		 2016 if (regno != -1)
2017 {
234a732d
GN		 2018 procfs_read_status (pi);
2019 memcpy ((char *) &greg.gregset,
2020 (char *) &pi->prstatus.pr_lwp.pr_context.uc_mcontext.gregs,
15af627c 2021 sizeof (gdb_gregset_t));
35f5886e 2022 }
234a732d
GN		 2023 fill_gregset (&greg.gregset, regno);
2024 greg.cmd = PCSREG;
2025 write (pi->ctl_fd, &greg, sizeof (greg));
2026#else /* PROCFS_USE_READ_WRITE */
2027 if (regno != -1)
2028 {
2029 ioctl (pi->ctl_fd, PIOCGREG, &pi->gregset.gregset);
2030 }
2031 fill_gregset (&pi->gregset.gregset, regno);
2032 ioctl (pi->ctl_fd, PIOCSREG, &pi->gregset.gregset);
2033#endif /* PROCFS_USE_READ_WRITE */
35f5886e
FF		 2034
2035#if defined (FP0_REGNUM)
2036
2037 /* Now repeat everything using the floating point register set, if the
2038 target has floating point hardware. Since we ignore the returned value,
2039 we'll never know whether it worked or not anyway. */
2040
234a732d 2041#ifdef PROCFS_USE_READ_WRITE
35f5886e
FF		 2042 if (regno != -1)
2043 {
234a732d
GN		 2044 procfs_read_status (pi);
2045 memcpy ((char *) &fpreg.fpregset,
2046 (char *) &pi->prstatus.pr_lwp.pr_context.uc_mcontext.fpregs,
15af627c 2047 sizeof (gdb_fpregset_t));
35f5886e 2048 }
234a732d
GN		 2049 fill_fpregset (&fpreg.fpregset, regno);
2050 fpreg.cmd = PCSFPREG;
2051 write (pi->ctl_fd, &fpreg, sizeof (fpreg));
2052#else /* PROCFS_USE_READ_WRITE */
2053 if (regno != -1)
2054 {
2055 ioctl (pi->ctl_fd, PIOCGFPREG, &pi->fpregset.fpregset);
2056 }
2057 fill_fpregset (&pi->fpregset.fpregset, regno);
2058 ioctl (pi->ctl_fd, PIOCSFPREG, &pi->fpregset.fpregset);
2059#endif /* PROCFS_USE_READ_WRITE */
35f5886e
FF		 2060
2061#endif /* FP0_REGNUM */
2062
2063}
2064
2065/*
2066
3fbdd536 2067LOCAL FUNCTION
35f5886e 2068
3780c337 2069 init_procinfo - setup a procinfo struct and connect it to a process
de43d7d0
SG		 2070
2071SYNOPSIS
2072
3780c337 2073 struct procinfo * init_procinfo (int pid)
de43d7d0
SG		 2074
2075DESCRIPTION
2076
eca4a350
SG		 2077 Allocate a procinfo structure, open the /proc file and then set up the
2078 set of signals and faults that are to be traced. Returns a pointer to
3780c337 2079 the new procinfo structure.
de43d7d0
SG		 2080
2081NOTES
2082
2083 If proc_init_failed ever gets called, control returns to the command
2084 processing loop via the standard error handling code.
2085
2086 */
2087
eca4a350 2088static struct procinfo *
3780c337 2089init_procinfo (pid, kill)
de43d7d0 2090 int pid;
3780c337 2091 int kill;
de43d7d0 2092{
3780c337
MS		 2093 struct procinfo *pi = (struct procinfo *)
2094 xmalloc (sizeof (struct procinfo));
1e50f1b4
JM		 2095 struct sig_ctl sctl;
2096 struct flt_ctl fctl;
de43d7d0 2097
3780c337 2098 memset ((char *) pi, 0, sizeof (*pi));
234a732d 2099 if (!open_proc_file (pid, pi, O_RDWR, 1))
3780c337 2100 proc_init_failed (pi, "can't open process file", kill);
de43d7d0 2101
8fc2b417
SG		 2102 /* open_proc_file may modify pid. */
2103
2104 pid = pi -> pid;
2105
de43d7d0
SG		 2106 /* Add new process to process info list */
2107
2108 pi->next = procinfo_list;
2109 procinfo_list = pi;
2110
2111 add_fd (pi); /* Add to list for poll/select */
2112
3780c337
MS		 2113 /* Remember some things about the inferior that we will, or might, change
2114 so that we can restore them when we detach. */
234a732d 2115#ifdef UNIXWARE
3780c337
MS		 2116 memcpy ((char *) &pi->saved_trace.sigset,
2117 (char *) &pi->prstatus.pr_sigtrace, sizeof (sigset_t));
2118 memcpy ((char *) &pi->saved_fltset.fltset,
2119 (char *) &pi->prstatus.pr_flttrace, sizeof (fltset_t));
2120 memcpy ((char *) &pi->saved_entryset.sysset,
2121 (char *) &pi->prstatus.pr_sysentry, sizeof (sysset_t));
2122 memcpy ((char *) &pi->saved_exitset.sysset,
2123 (char *) &pi->prstatus.pr_sysexit, sizeof (sysset_t));
2124
2125 /* Set up trace and fault sets, as gdb expects them. */
2126
234a732d 2127 prfillset (&sctl.sigset);
3780c337 2128 notice_signals (pi, &sctl);
234a732d
GN		 2129 prfillset (&fctl.fltset);
2130 prdelset (&fctl.fltset, FLTPAGE);
3780c337
MS		 2131
2132#else /* ! UNIXWARE */
2133 ioctl (pi->ctl_fd, PIOCGTRACE, &pi->saved_trace.sigset);
2134 ioctl (pi->ctl_fd, PIOCGHOLD, &pi->saved_sighold.sigset);
2135 ioctl (pi->ctl_fd, PIOCGFAULT, &pi->saved_fltset.fltset);
2136 ioctl (pi->ctl_fd, PIOCGENTRY, &pi->saved_entryset.sysset);
2137 ioctl (pi->ctl_fd, PIOCGEXIT, &pi->saved_exitset.sysset);
2138
2139 /* Set up trace and fault sets, as gdb expects them. */
2140
de43d7d0
SG		 2141 memset ((char *) &pi->prrun, 0, sizeof (pi->prrun));
2142 prfillset (&pi->prrun.pr_trace);
2143 procfs_notice_signals (pid);
2144 prfillset (&pi->prrun.pr_fault);
2145 prdelset (&pi->prrun.pr_fault, FLTPAGE);
b9e58503
PS		 2146#ifdef PROCFS_DONT_TRACE_FAULTS
2147 premptyset (&pi->prrun.pr_fault);
2592eef8 2148#endif
234a732d 2149#endif /* UNIXWARE */
2592eef8 2150
234a732d 2151 if (!procfs_read_status (pi))
3780c337 2152 proc_init_failed (pi, "procfs_read_status failed", kill);
8fc2b417 2153
3780c337
MS		 2154 return pi;
2155}
2156
2157/*
2158
2159LOCAL FUNCTION
2160
2161 create_procinfo - initialize access to a /proc entry
2162
2163SYNOPSIS
2164
2165 struct procinfo * create_procinfo (int pid)
2166
2167DESCRIPTION
2168
2169 Allocate a procinfo structure, open the /proc file and then set up the
2170 set of signals and faults that are to be traced. Returns a pointer to
2171 the new procinfo structure.
2172
2173NOTES
2174
2175 If proc_init_failed ever gets called, control returns to the command
2176 processing loop via the standard error handling code.
2177
2178 */
2179
2180static struct procinfo *
2181create_procinfo (pid)
2182 int pid;
2183{
2184 struct procinfo *pi;
2185 struct sig_ctl sctl;
2186 struct flt_ctl fctl;
2187
2188 pi = find_procinfo (pid, 1);
2189 if (pi != NULL)
2190 return pi; /* All done! It already exists */
2191
2192 pi = init_procinfo (pid, 1);
8fc2b417 2193
234a732d 2194#ifndef UNIXWARE
3780c337
MS		 2195/* A bug in Solaris (2.5 at least) causes PIOCWSTOP to hang on LWPs that are
2196 already stopped, even if they all have PR_ASYNC set. */
8fc2b417 2197 if (!(pi->prstatus.pr_flags & PR_STOPPED))
234a732d
GN		 2198#endif
2199 if (!procfs_write_pcwstop (pi))
3780c337 2200 proc_init_failed (pi, "procfs_write_pcwstop failed", 1);
de43d7d0 2201
234a732d
GN		 2202#ifdef PROCFS_USE_READ_WRITE
2203 fctl.cmd = PCSFAULT;
2204 if (write (pi->ctl_fd, (char *) &fctl, sizeof (struct flt_ctl)) < 0)
3780c337 2205 proc_init_failed (pi, "PCSFAULT failed", 1);
234a732d
GN		 2206#else
2207 if (ioctl (pi->ctl_fd, PIOCSFAULT, &pi->prrun.pr_fault) < 0)
3780c337 2208 proc_init_failed (pi, "PIOCSFAULT failed", 1);
234a732d 2209#endif
eca4a350
SG		 2210
2211 return pi;
de43d7d0
SG		 2212}
2213
2214/*
2215
8fc2b417
SG		 2216LOCAL FUNCTION
2217
2218 procfs_exit_handler - handle entry into the _exit syscall
2219
2220SYNOPSIS
2221
2222 int procfs_exit_handler (pi, syscall_num, why, rtnvalp, statvalp)
2223
2224DESCRIPTION
2225
2226 This routine is called when an inferior process enters the _exit()
2227 system call. It continues the process, and then collects the exit
2228 status and pid which are returned in *statvalp and *rtnvalp. After
2229 that it returns non-zero to indicate that procfs_wait should wake up.
2230
2231NOTES
2232 There is probably a better way to do this.
2233
2234 */
2235
2236static int
2237procfs_exit_handler (pi, syscall_num, why, rtnvalp, statvalp)
2238 struct procinfo *pi;
2239 int syscall_num;
2240 int why;
2241 int *rtnvalp;
2242 int *statvalp;
2243{
3780c337 2244 struct procinfo *temp_pi, *next_pi;
1e50f1b4 2245 struct proc_ctl pctl;
3780c337 2246
1e50f1b4
JM		 2247#ifdef UNIXWARE
2248 pctl.cmd = PCRUN;
2249 pctl.data = PRCFAULT;
2250#else
8fc2b417 2251 pi->prrun.pr_flags = PRCFAULT;
1e50f1b4 2252#endif
8fc2b417 2253
1e50f1b4
JM		 2254#ifdef PROCFS_USE_READ_WRITE
2255 if (write (pi->ctl_fd, (char *)&pctl, sizeof (struct proc_ctl)) < 0)
2256#else
234a732d 2257 if (ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0)
1e50f1b4 2258#endif
8fc2b417
SG		 2259 perror_with_name (pi->pathname);
2260
3780c337
MS		 2261 if (attach_flag)
2262 {
2263 /* Claim it exited (don't call wait). */
2264 if (info_verbose)
2265 printf_filtered ("(attached process has exited)\n");
2266 *statvalp = 0;
2267 *rtnvalp = inferior_pid;
2268 }
2269 else
2270 {
2271 *rtnvalp = wait (statvalp);
2272 if (*rtnvalp >= 0)
2273 *rtnvalp = pi->pid;
2274 }
8fc2b417 2275
3780c337
MS		 2276 /* Close ALL open proc file handles,
2277 except the one that called SYS_exit. */
2278 for (temp_pi = procinfo_list; temp_pi; temp_pi = next_pi)
2279 {
2280 next_pi = temp_pi->next;
2281 if (temp_pi == pi)
2282 continue; /* Handled below */
2283 close_proc_file (temp_pi);
2284 }
8fc2b417
SG		 2285 return 1;
2286}
2287
2288/*
2289
2290LOCAL FUNCTION
2291
2292 procfs_exec_handler - handle exit from the exec family of syscalls
2293
2294SYNOPSIS
2295
2296 int procfs_exec_handler (pi, syscall_num, why, rtnvalp, statvalp)
2297
2298DESCRIPTION
2299
2300 This routine is called when an inferior process is about to finish any
2301 of the exec() family of system calls. It pretends that we got a
2302 SIGTRAP (for compatibility with ptrace behavior), and returns non-zero
2303 to tell procfs_wait to wake up.
2304
2305NOTES
2306 This need for compatibility with ptrace is questionable. In the
2307 future, it shouldn't be necessary.
2308
2309 */
2310
2311static int
2312procfs_exec_handler (pi, syscall_num, why, rtnvalp, statvalp)
2313 struct procinfo *pi;
2314 int syscall_num;
2315 int why;
2316 int *rtnvalp;
2317 int *statvalp;
2318{
2319 *statvalp = (SIGTRAP << 8) | 0177;
2320
2321 return 1;
2322}
2323
234a732d
GN		 2324#if defined(SYS_sproc) && !defined(UNIXWARE)
2325/* IRIX lwp creation system call */
8fc2b417
SG		 2326
2327/*
2328
2329LOCAL FUNCTION
2330
2331 procfs_sproc_handler - handle exit from the sproc syscall
2332
2333SYNOPSIS
2334
2335 int procfs_sproc_handler (pi, syscall_num, why, rtnvalp, statvalp)
2336
2337DESCRIPTION
2338
2339 This routine is called when an inferior process is about to finish an
2340 sproc() system call. This is the system call that IRIX uses to create
2341 a lightweight process. When the target process gets this event, we can
2342 look at rval1 to find the new child processes ID, and create a new
2343 procinfo struct from that.
2344
2345 After that, it pretends that we got a SIGTRAP, and returns non-zero
2346 to tell procfs_wait to wake up. Subsequently, wait_for_inferior gets
2347 woken up, sees the new process and continues it.
2348
2349NOTES
2350 We actually never see the child exiting from sproc because we will
2351 shortly stop the child with PIOCSTOP, which is then registered as the
2352 event of interest.
2353 */
2354
2355static int
2356procfs_sproc_handler (pi, syscall_num, why, rtnvalp, statvalp)
2357 struct procinfo *pi;
2358 int syscall_num;
2359 int why;
2360 int *rtnvalp;
2361 int *statvalp;
2362{
2363/* We've just detected the completion of an sproc system call. Now we need to
2364 setup a procinfo struct for this thread, and notify the thread system of the
2365 new arrival. */
2366
2367/* If sproc failed, then nothing interesting happened. Continue the process
2368 and go back to sleep. */
2369
2370 if (pi->prstatus.pr_errno != 0)
2371 {
2372 pi->prrun.pr_flags &= PRSTEP;
2373 pi->prrun.pr_flags |= PRCFAULT;
2374
234a732d 2375 if (ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0)
8fc2b417
SG		 2376 perror_with_name (pi->pathname);
2377
2378 return 0;
2379 }
2380
2381 /* At this point, the new thread is stopped at it's first instruction, and
2382 the parent is stopped at the exit from sproc. */
2383
2384 /* Notify the caller of the arrival of a new thread. */
2385 create_procinfo (pi->prstatus.pr_rval1);
2386
2387 *rtnvalp = pi->prstatus.pr_rval1;
2388 *statvalp = (SIGTRAP << 8) | 0177;
2389
2390 return 1;
2391}
2392
2393/*
2394
2395LOCAL FUNCTION
2396
2397 procfs_fork_handler - handle exit from the fork syscall
2398
2399SYNOPSIS
2400
2401 int procfs_fork_handler (pi, syscall_num, why, rtnvalp, statvalp)
2402
2403DESCRIPTION
2404
2405 This routine is called when an inferior process is about to finish a
2406 fork() system call. We will open up the new process, and then close
2407 it, which releases it from the clutches of the debugger.
2408
2409 After that, we continue the target process as though nothing had
2410 happened.
2411
2412NOTES
2413 This is necessary for IRIX because we have to set PR_FORK in order
2414 to catch the creation of lwps (via sproc()). When an actual fork
2415 occurs, it becomes necessary to reset the forks debugger flags and
2416 continue it because we can't hack multiple processes yet.
2417 */
2418
2419static int
2420procfs_fork_handler (pi, syscall_num, why, rtnvalp, statvalp)
2421 struct procinfo *pi;
2422 int syscall_num;
2423 int why;
2424 int *rtnvalp;
2425 int *statvalp;
2426{
2427 struct procinfo *pitemp;
2428
2429/* At this point, we've detected the completion of a fork (or vfork) call in
2430 our child. The grandchild is also stopped because we set inherit-on-fork
2431 earlier. (Note that nobody has the grandchilds' /proc file open at this
2432 point.) We will release the grandchild from the debugger by opening it's
2433 /proc file and then closing it. Since run-on-last-close is set, the
2434 grandchild continues on its' merry way. */
2435
2436
2437 pitemp = create_procinfo (pi->prstatus.pr_rval1);
2438 if (pitemp)
2439 close_proc_file (pitemp);
2440
234a732d 2441 if (ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0)
8fc2b417
SG		 2442 perror_with_name (pi->pathname);
2443
2444 return 0;
2445}
234a732d 2446#endif /* SYS_sproc && !UNIXWARE */
8fc2b417
SG		 2447
2448/*
2449
de43d7d0
SG		 2450LOCAL FUNCTION
2451
3780c337 2452 procfs_set_inferior_syscall_traps - setup the syscall traps
35f5886e
FF		 2453
2454SYNOPSIS
2455
3780c337 2456 void procfs_set_inferior_syscall_traps (struct procinfo *pip)
35f5886e
FF		 2457
2458DESCRIPTION
2459
3780c337
MS		 2460 Called for each "procinfo" (process, thread, or LWP) in the
2461 inferior, to register for notification of and handlers for
2462 syscall traps in the inferior.
cc221e76 2463
35f5886e
FF		 2464 */
2465
3780c337
MS		 2466static void
2467procfs_set_inferior_syscall_traps (pip)
2468 struct procinfo *pip;
35f5886e 2469{
8fc2b417
SG		 2470 procfs_set_syscall_trap (pip, SYS_exit, PROCFS_SYSCALL_ENTRY,
2471 procfs_exit_handler);
2472
b6823237 2473#ifndef PRFS_STOPEXEC
8fc2b417
SG		 2474#ifdef SYS_exec
2475 procfs_set_syscall_trap (pip, SYS_exec, PROCFS_SYSCALL_EXIT,
2476 procfs_exec_handler);
2477#endif
2478#ifdef SYS_execv
2479 procfs_set_syscall_trap (pip, SYS_execv, PROCFS_SYSCALL_EXIT,
2480 procfs_exec_handler);
2481#endif
2482#ifdef SYS_execve
2483 procfs_set_syscall_trap (pip, SYS_execve, PROCFS_SYSCALL_EXIT,
2484 procfs_exec_handler);
2485#endif
b6823237 2486#endif /* PRFS_STOPEXEC */
8fc2b417
SG		 2487
2488 /* Setup traps on exit from sproc() */
2489
2490#ifdef SYS_sproc
2491 procfs_set_syscall_trap (pip, SYS_sproc, PROCFS_SYSCALL_EXIT,
2492 procfs_sproc_handler);
2493 procfs_set_syscall_trap (pip, SYS_fork, PROCFS_SYSCALL_EXIT,
2494 procfs_fork_handler);
2495#ifdef SYS_vfork
2496 procfs_set_syscall_trap (pip, SYS_vfork, PROCFS_SYSCALL_EXIT,
2497 procfs_fork_handler);
2498#endif
2499/* Turn on inherit-on-fork flag so that all children of the target process
2500 start with tracing flags set. This allows us to trap lwp creation. Note
2501 that we also have to trap on fork and vfork in order to disable all tracing
2502 in the targets child processes. */
2503
234a732d 2504 modify_inherit_on_fork_flag (pip->ctl_fd, 1);
8fc2b417
SG		 2505#endif
2506
2507#ifdef SYS_lwp_create
2508 procfs_set_syscall_trap (pip, SYS_lwp_create, PROCFS_SYSCALL_EXIT,
2509 procfs_lwp_creation_handler);
2510#endif
3780c337
MS		 2511}
2512
2513/*
2514
2515LOCAL FUNCTION
2516
2517 procfs_init_inferior - initialize target vector and access to a
2518 /proc entry
2519
2520SYNOPSIS
2521
2522 int procfs_init_inferior (int pid)
2523
2524DESCRIPTION
2525
2526 When gdb starts an inferior, this function is called in the parent
2527 process immediately after the fork. It waits for the child to stop
2528 on the return from the exec system call (the child itself takes care
2529 of ensuring that this is set up), then sets up the set of signals
2530 and faults that are to be traced. Returns the pid, which may have had
2531 the thread-id added to it.
2532
2533NOTES
2534
2535 If proc_init_failed ever gets called, control returns to the command
2536 processing loop via the standard error handling code.
2537
2538 */
2539
4ef1f467 2540static int
3780c337
MS		 2541procfs_init_inferior (pid)
2542 int pid;
2543{
2544 struct procinfo *pip;
2545
2546 push_target (&procfs_ops);
2547
2548 pip = create_procinfo (pid);
2549
2550 procfs_set_inferior_syscall_traps (pip);
8fc2b417
SG		 2551
2552 /* create_procinfo may change the pid, so we have to update inferior_pid
2553 here before calling other gdb routines that need the right pid. */
2554
2555 pid = pip -> pid;
2556 inferior_pid = pid;
2557
2558 add_thread (pip -> pid); /* Setup initial thread */
bc28a06c 2559
2592eef8
PS		 2560#ifdef START_INFERIOR_TRAPS_EXPECTED
2561 startup_inferior (START_INFERIOR_TRAPS_EXPECTED);
2562#else
bc28a06c
JK		 2563 /* One trap to exec the shell, one to exec the program being debugged. */
2564 startup_inferior (2);
2592eef8 2565#endif
4ef1f467 2566 return (pid);
35f5886e
FF		 2567}
2568
2569/*
2570
cc221e76
FF		 2571GLOBAL FUNCTION
2572
3950a34e 2573 procfs_notice_signals
cc221e76
FF		 2574
2575SYNOPSIS
2576
952a820e 2577 static void procfs_notice_signals (int pid);
cc221e76
FF		 2578
2579DESCRIPTION
2580
2581 When the user changes the state of gdb's signal handling via the
2582 "handle" command, this function gets called to see if any change
2583 in the /proc interface is required. It is also called internally
2584 by other /proc interface functions to initialize the state of
2585 the traced signal set.
2586
2587 One thing it does is that signals for which the state is "nostop",
2588 "noprint", and "pass", have their trace bits reset in the pr_trace
2589 field, so that they are no longer traced. This allows them to be
2590 delivered directly to the inferior without the debugger ever being
2591 involved.
2592 */
2593
3950a34e 2594static void
de43d7d0 2595procfs_notice_signals (pid)
952a820e 2596 int pid;
cc221e76 2597{
de43d7d0 2598 struct procinfo *pi;
234a732d 2599 struct sig_ctl sctl;
cc221e76 2600
de43d7d0
SG		 2601 pi = find_procinfo (pid, 0);
2602
234a732d
GN		 2603#ifdef UNIXWARE
2604 premptyset (&sctl.sigset);
2605#else
234c4096 2606 sctl.sigset = pi->prrun.pr_trace;
234a732d
GN		 2607#endif
2608
2609 notice_signals (pi, &sctl);
95b71071
PS		 2610
2611#ifndef UNIXWARE
2612 pi->prrun.pr_trace = sctl.sigset;
2613#endif
234a732d
GN		 2614}
2615
2616static void
2617notice_signals (pi, sctl)
2618 struct procinfo *pi;
2619 struct sig_ctl *sctl;
2620{
2621 int signo;
2622
de43d7d0 2623 for (signo = 0; signo < NSIG; signo++)
cc221e76 2624 {
67ac9759
JK		 2625 if (signal_stop_state (target_signal_from_host (signo)) == 0 &&
2626 signal_print_state (target_signal_from_host (signo)) == 0 &&
2627 signal_pass_state (target_signal_from_host (signo)) == 1)
cc221e76 2628 {
234a732d 2629 prdelset (&sctl->sigset, signo);
cc221e76 2630 }
de43d7d0 2631 else
cc221e76 2632 {
234a732d 2633 praddset (&sctl->sigset, signo);
cc221e76
FF		 2634 }
2635 }
234a732d
GN		 2636#ifdef PROCFS_USE_READ_WRITE
2637 sctl->cmd = PCSTRACE;
2638 if (write (pi->ctl_fd, (char *) sctl, sizeof (struct sig_ctl)) < 0)
2639#else
2640 if (ioctl (pi->ctl_fd, PIOCSTRACE, &sctl->sigset))
2641#endif
de43d7d0
SG		 2642 {
2643 print_sys_errmsg ("PIOCSTRACE failed", errno);
2644 }
cc221e76
FF		 2645}
2646
2647/*
2648
3fbdd536 2649LOCAL FUNCTION
35f5886e
FF		 2650
2651 proc_set_exec_trap -- arrange for exec'd child to halt at startup
2652
2653SYNOPSIS
2654
2655 void proc_set_exec_trap (void)
2656
2657DESCRIPTION
2658
2659 This function is called in the child process when starting up
2660 an inferior, prior to doing the exec of the actual inferior.
2661 It sets the child process's exitset to make exit from the exec
2662 system call an event of interest to stop on, and then simply
2663 returns. The child does the exec, the system call returns, and
2664 the child stops at the first instruction, ready for the gdb
2665 parent process to take control of it.
2666
2667NOTE
2668
2669 We need to use all local variables since the child may be sharing
2670 it's data space with the parent, if vfork was used rather than
2671 fork.
cc221e76
FF		 2672
2673 Also note that we want to turn off the inherit-on-fork flag in
2674 the child process so that any grand-children start with all
2675 tracing flags cleared.
35f5886e
FF		 2676 */
2677
3fbdd536 2678static void
1ab3bf1b 2679proc_set_exec_trap ()
35f5886e 2680{
234a732d
GN		 2681 struct sys_ctl exitset;
2682 struct sys_ctl entryset;
2683 char procname[MAX_PROC_NAME_SIZE];
35f5886e
FF		 2684 int fd;
2685
234a732d
GN		 2686 sprintf (procname, CTL_PROC_NAME_FMT, getpid ());
2687#ifdef UNIXWARE
2688 if ((fd = open (procname, O_WRONLY)) < 0)
2689#else
35f5886e 2690 if ((fd = open (procname, O_RDWR)) < 0)
234a732d 2691#endif
35f5886e
FF		 2692 {
2693 perror (procname);
199b2450 2694 gdb_flush (gdb_stderr);
35f5886e
FF		 2695 _exit (127);
2696 }
234a732d
GN		 2697 premptyset (&exitset.sysset);
2698 premptyset (&entryset.sysset);
407a8389 2699
b6823237 2700#ifdef PRFS_STOPEXEC
2592eef8 2701 /* Under Alpha OSF/1 we have to use a PIOCSSPCACT ioctl to trace
b6823237 2702 exits from exec system calls because of the user level loader. */
2592eef8
PS		 2703 {
2704 int prfs_flags;
2705
2706 if (ioctl (fd, PIOCGSPCACT, &prfs_flags) < 0)
2707 {
2708 perror (procname);
2709 gdb_flush (gdb_stderr);
2710 _exit (127);
2711 }
b6823237 2712 prfs_flags |= PRFS_STOPEXEC;
2592eef8
PS		 2713 if (ioctl (fd, PIOCSSPCACT, &prfs_flags) < 0)
2714 {
2715 perror (procname);
2716 gdb_flush (gdb_stderr);
2717 _exit (127);
2718 }
2719 }
b6823237 2720#else /* PRFS_STOPEXEC */
cc221e76
FF		 2721 /* GW: Rationale...
2722 Not all systems with /proc have all the exec* syscalls with the same
2723 names. On the SGI, for example, there is no SYS_exec, but there
2724 *is* a SYS_execv. So, we try to account for that. */
2725
407a8389 2726#ifdef SYS_exec
234a732d 2727 praddset (&exitset.sysset, SYS_exec);
407a8389
SG		 2728#endif
2729#ifdef SYS_execve
234a732d 2730 praddset (&exitset.sysset, SYS_execve);
407a8389
SG		 2731#endif
2732#ifdef SYS_execv
234a732d 2733 praddset (&exitset.sysset, SYS_execv);
407a8389
SG		 2734#endif
2735
234a732d
GN		 2736#ifdef PROCFS_USE_READ_WRITE
2737 exitset.cmd = PCSEXIT;
2738 if (write (fd, (char *) &exitset, sizeof (struct sys_ctl)) < 0)
2739#else
2740 if (ioctl (fd, PIOCSEXIT, &exitset.sysset) < 0)
2741#endif
35f5886e
FF		 2742 {
2743 perror (procname);
199b2450 2744 gdb_flush (gdb_stderr);
35f5886e
FF		 2745 _exit (127);
2746 }
b6823237 2747#endif /* PRFS_STOPEXEC */
cc221e76 2748
234a732d 2749 praddset (&entryset.sysset, SYS_exit);
fb63d460 2750
234a732d
GN		 2751#ifdef PROCFS_USE_READ_WRITE
2752 entryset.cmd = PCSENTRY;
2753 if (write (fd, (char *) &entryset, sizeof (struct sys_ctl)) < 0)
2754#else
2755 if (ioctl (fd, PIOCSENTRY, &entryset.sysset) < 0)
2756#endif
fb63d460
SG		 2757 {
2758 perror (procname);
199b2450 2759 gdb_flush (gdb_stderr);
fb63d460
SG		 2760 _exit (126);
2761 }
2762
cc221e76
FF		 2763 /* Turn off inherit-on-fork flag so that all grand-children of gdb
2764 start with tracing flags cleared. */
2765
8fc2b417 2766 modify_inherit_on_fork_flag (fd, 0);
ec8ceca3
JG		 2767
2768 /* Turn on run-on-last-close flag so that this process will not hang
2769 if GDB goes away for some reason. */
2770
8fc2b417
SG		 2771 modify_run_on_last_close_flag (fd, 1);
2772
1ba38e79
MS		 2773#ifndef UNIXWARE /* since this is a solaris-ism, we don't want it */
2774 /* NOTE: revisit when doing thread support for UW */
8fc2b417 2775#ifdef PR_ASYNC
ec8ceca3 2776 {
8fc2b417 2777 long pr_flags;
234a732d 2778 struct proc_ctl pctl;
8fc2b417
SG		 2779
2780/* Solaris needs this to make procfs treat all threads seperately. Without
2781 this, all threads halt whenever something happens to any thread. Since
2782 GDB wants to control all this itself, it needs to set PR_ASYNC. */
2783
2784 pr_flags = PR_ASYNC;
234a732d
GN		 2785#ifdef PROCFS_USE_READ_WRITE
2786 pctl.cmd = PCSET;
2787 pctl.data = PR_FORK|PR_ASYNC;
2788 write (fd, (char *) &pctl, sizeof (struct proc_ctl));
2789#else
8fc2b417 2790 ioctl (fd, PIOCSET, &pr_flags);
234a732d 2791#endif
ec8ceca3 2792 }
8fc2b417 2793#endif /* PR_ASYNC */
1ba38e79 2794#endif /* !UNIXWARE */
35f5886e
FF		 2795}
2796
f8b76e70
FF		 2797/*
2798
a39ad5ce
FF		 2799GLOBAL FUNCTION
2800
2801 proc_iterate_over_mappings -- call function for every mapped space
2802
2803SYNOPSIS
2804
2805 int proc_iterate_over_mappings (int (*func)())
2806
2807DESCRIPTION
2808
2809 Given a pointer to a function, call that function for every
2810 mapped address space, passing it an open file descriptor for
2811 the file corresponding to that mapped address space (if any)
2812 and the base address of the mapped space. Quit when we hit
2813 the end of the mappings or the function returns nonzero.
2814 */
2815
234a732d
GN		 2816#ifdef UNIXWARE
2817int
2818proc_iterate_over_mappings (func)
2819 int (*func) PARAMS ((int, CORE_ADDR));
2820{
2821 int nmap;
2822 int fd;
2823 int funcstat = 0;
2824 prmap_t *prmaps;
2825 prmap_t *prmap;
2826 struct procinfo *pi;
2827 struct stat sbuf;
2828
2829 pi = current_procinfo;
2830
2831 if (fstat (pi->map_fd, &sbuf) < 0)
2832 return 0;
2833
2834 nmap = sbuf.st_size / sizeof (prmap_t);
2835 prmaps = (prmap_t *) alloca (nmap * sizeof(prmap_t));
2836 if ((lseek (pi->map_fd, 0, SEEK_SET) == 0) &&
2837 (read (pi->map_fd, (char *) prmaps, nmap * sizeof (prmap_t)) ==
2838 (nmap * sizeof (prmap_t))))
2839 {
2840 int i = 0;
2841 for (prmap = prmaps; i < nmap && funcstat == 0; ++prmap, ++i)
2842 {
2843 char name[sizeof ("/proc/1234567890/object") +
2844 sizeof (prmap->pr_mapname)];
2845 sprintf (name, "/proc/%d/object/%s", pi->pid, prmap->pr_mapname);
2846 if ((fd = open (name, O_RDONLY)) == -1)
2847 {
2848 funcstat = 1;
2849 break;
2850 }
2851 funcstat = (*func) (fd, (CORE_ADDR) prmap->pr_vaddr);
2852 close (fd);
2853 }
2854 }
2855 return (funcstat);
2856}
2857#else /* UNIXWARE */
a39ad5ce 2858int
1ab3bf1b
JG		 2859proc_iterate_over_mappings (func)
2860 int (*func) PARAMS ((int, CORE_ADDR));
a39ad5ce
FF		 2861{
2862 int nmap;
2863 int fd;
2864 int funcstat = 0;
2865 struct prmap *prmaps;
2866 struct prmap *prmap;
de43d7d0
SG		 2867 struct procinfo *pi;
2868
2869 pi = current_procinfo;
a39ad5ce 2870
234a732d 2871 if (ioctl (pi->map_fd, PIOCNMAP, &nmap) == 0)
a39ad5ce 2872 {
1ab3bf1b 2873 prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps));
234a732d 2874 if (ioctl (pi->map_fd, PIOCMAP, prmaps) == 0)
a39ad5ce
FF		 2875 {
2876 for (prmap = prmaps; prmap -> pr_size && funcstat == 0; ++prmap)
2877 {
de43d7d0 2878 fd = proc_address_to_fd (pi, (CORE_ADDR) prmap -> pr_vaddr, 0);
1ab3bf1b 2879 funcstat = (*func) (fd, (CORE_ADDR) prmap -> pr_vaddr);
a39ad5ce
FF		 2880 close (fd);
2881 }
2882 }
2883 }
2884 return (funcstat);
2885}
234a732d 2886#endif /* UNIXWARE */
a39ad5ce 2887
3fbdd536 2888#if 0 /* Currently unused */
a39ad5ce
FF		 2889/*
2890
f8b76e70
FF		 2891GLOBAL FUNCTION
2892
2893 proc_base_address -- find base address for segment containing address
2894
2895SYNOPSIS
2896
2897 CORE_ADDR proc_base_address (CORE_ADDR addr)
2898
2899DESCRIPTION
2900
2901 Given an address of a location in the inferior, find and return
2902 the base address of the mapped segment containing that address.
2903
2904 This is used for example, by the shared library support code,
2905 where we have the pc value for some location in the shared library
2906 where we are stopped, and need to know the base address of the
2907 segment containing that address.
2908*/
2909
f8b76e70 2910CORE_ADDR
1ab3bf1b 2911proc_base_address (addr)
cc221e76 2912 CORE_ADDR addr;
f8b76e70
FF		 2913{
2914 int nmap;
2915 struct prmap *prmaps;
2916 struct prmap *prmap;
2917 CORE_ADDR baseaddr = 0;
de43d7d0 2918 struct procinfo *pi;
f8b76e70 2919
de43d7d0
SG		 2920 pi = current_procinfo;
2921
234a732d 2922 if (ioctl (pi->map_fd, PIOCNMAP, &nmap) == 0)
f8b76e70 2923 {
1ab3bf1b 2924 prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps));
234a732d 2925 if (ioctl (pi->map_fd, PIOCMAP, prmaps) == 0)
f8b76e70
FF		 2926 {
2927 for (prmap = prmaps; prmap -> pr_size; ++prmap)
2928 {
2929 if ((prmap -> pr_vaddr <= (caddr_t) addr) &&
2930 (prmap -> pr_vaddr + prmap -> pr_size > (caddr_t) addr))
2931 {
2932 baseaddr = (CORE_ADDR) prmap -> pr_vaddr;
2933 break;
2934 }
2935 }
2936 }
2937 }
2938 return (baseaddr);
2939}
2940
1ab3bf1b
JG		 2941#endif /* 0 */
2942
1e50f1b4 2943#ifndef UNIXWARE
f8b76e70
FF		 2944/*
2945
cc221e76 2946LOCAL FUNCTION
f8b76e70
FF		 2947
2948 proc_address_to_fd -- return open fd for file mapped to address
2949
2950SYNOPSIS
2951
de43d7d0 2952 int proc_address_to_fd (struct procinfo *pi, CORE_ADDR addr, complain)
f8b76e70
FF		 2953
2954DESCRIPTION
2955
2956 Given an address in the current inferior's address space, use the
2957 /proc interface to find an open file descriptor for the file that
2958 this address was mapped in from. Return -1 if there is no current
2959 inferior. Print a warning message if there is an inferior but
2960 the address corresponds to no file (IE a bogus address).
2961
2962*/
2963
1ab3bf1b 2964static int
de43d7d0
SG		 2965proc_address_to_fd (pi, addr, complain)
2966 struct procinfo *pi;
1ab3bf1b
JG		 2967 CORE_ADDR addr;
2968 int complain;
f8b76e70
FF		 2969{
2970 int fd = -1;
2971
234a732d 2972 if ((fd = ioctl (pi->ctl_fd, PIOCOPENM, (caddr_t *) &addr)) < 0)
f8b76e70 2973 {
de43d7d0 2974 if (complain)
f8b76e70 2975 {
de43d7d0
SG		 2976 print_sys_errmsg (pi->pathname, errno);
2977 warning ("can't find mapped file for address 0x%x", addr);
f8b76e70
FF		 2978 }
2979 }
2980 return (fd);
2981}
1e50f1b4 2982#endif /* !UNIXWARE */
35f5886e 2983
3fbdd536
JG		 2984/* Attach to process PID, then initialize for debugging it
2985 and wait for the trace-trap that results from attaching. */
2986
2987static void
2988procfs_attach (args, from_tty)
2989 char *args;
2990 int from_tty;
2991{
2992 char *exec_file;
2993 int pid;
2994
2995 if (!args)
2996 error_no_arg ("process-id to attach");
2997
2998 pid = atoi (args);
2999
3000 if (pid == getpid()) /* Trying to masturbate? */
3001 error ("I refuse to debug myself!");
3002
3003 if (from_tty)
3004 {
3005 exec_file = (char *) get_exec_file (0);
3006
3007 if (exec_file)
199b2450 3008 printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, target_pid_to_str (pid));
3fbdd536 3009 else
199b2450 3010 printf_unfiltered ("Attaching to %s\n", target_pid_to_str (pid));
3fbdd536 3011
199b2450 3012 gdb_flush (gdb_stdout);
3fbdd536
JG		 3013 }
3014
8fc2b417 3015 inferior_pid = pid = do_attach (pid);
3fbdd536
JG		 3016 push_target (&procfs_ops);
3017}
3018
3019
3020/* Take a program previously attached to and detaches it.
3021 The program resumes execution and will no longer stop
3022 on signals, etc. We'd better not have left any breakpoints
3023 in the program or it'll die when it hits one. For this
3024 to work, it may be necessary for the process to have been
3025 previously attached. It *might* work if the program was
3026 started via the normal ptrace (PTRACE_TRACEME). */
3027
3028static void
3029procfs_detach (args, from_tty)
3030 char *args;
3031 int from_tty;
3032{
3033 int siggnal = 0;
3034
3035 if (from_tty)
3036 {
3037 char *exec_file = get_exec_file (0);
3038 if (exec_file == 0)
3039 exec_file = "";
199b2450 3040 printf_unfiltered ("Detaching from program: %s %s\n",
25286543 3041 exec_file, target_pid_to_str (inferior_pid));
199b2450 3042 gdb_flush (gdb_stdout);
3fbdd536
JG		 3043 }
3044 if (args)
3045 siggnal = atoi (args);
3046
3047 do_detach (siggnal);
3048 inferior_pid = 0;
3049 unpush_target (&procfs_ops); /* Pop out of handling an inferior */
3050}
3051
3052/* Get ready to modify the registers array. On machines which store
3053 individual registers, this doesn't need to do anything. On machines
3054 which store all the registers in one fell swoop, this makes sure
3055 that registers contains all the registers from the program being
3056 debugged. */
3057
3058static void
3059procfs_prepare_to_store ()
3060{
3061#ifdef CHILD_PREPARE_TO_STORE
3062 CHILD_PREPARE_TO_STORE ();
3063#endif
3064}
3065
3066/* Print status information about what we're accessing. */
3067
3068static void
3069procfs_files_info (ignore)
3070 struct target_ops *ignore;
3071{
199b2450 3072 printf_unfiltered ("\tUsing the running image of %s %s via /proc.\n",
25286543 3073 attach_flag? "attached": "child", target_pid_to_str (inferior_pid));
3fbdd536
JG		 3074}
3075
3076/* ARGSUSED */
3077static void
3078procfs_open (arg, from_tty)
3079 char *arg;
3080 int from_tty;
3081{
3082 error ("Use the \"run\" command to start a Unix child process.");
3083}
35f5886e
FF		 3084
3085/*
3086
3fbdd536 3087LOCAL FUNCTION
35f5886e 3088
3fbdd536 3089 do_attach -- attach to an already existing process
35f5886e
FF		 3090
3091SYNOPSIS
3092
3fbdd536 3093 int do_attach (int pid)
35f5886e
FF		 3094
3095DESCRIPTION
3096
3097 Attach to an already existing process with the specified process
3098 id. If the process is not already stopped, query whether to
3099 stop it or not.
3100
3101NOTES
3102
3103 The option of stopping at attach time is specific to the /proc
3104 versions of gdb. Versions using ptrace force the attachee
ec8ceca3
JG		 3105 to stop. (I have changed this version to do so, too. All you
3106 have to do is "continue" to make it go on. -- gnu@cygnus.com)
35f5886e
FF		 3107
3108*/
3109
3fbdd536
JG		 3110static int
3111do_attach (pid)
1ab3bf1b 3112 int pid;
35f5886e 3113{
de43d7d0 3114 struct procinfo *pi;
234a732d
GN		 3115 struct sig_ctl sctl;
3116 struct flt_ctl fctl;
3780c337 3117 int nlwp, *lwps;
de43d7d0 3118
3780c337 3119 pi = init_procinfo (pid, 0);
de43d7d0 3120
3780c337
MS		 3121#ifdef PIOCLWPIDS
3122 nlwp = pi->prstatus.pr_nlwp;
3123 lwps = alloca ((2 * nlwp + 2) * sizeof (id_t));
de43d7d0 3124
3780c337 3125 if (ioctl (pi->ctl_fd, PIOCLWPIDS, lwps))
35f5886e 3126 {
3780c337
MS		 3127 print_sys_errmsg (pi -> pathname, errno);
3128 error ("PIOCLWPIDS failed");
35f5886e 3129 }
3780c337
MS		 3130#else /* PIOCLWPIDS */
3131 nlwp = 1;
3132 lwps = alloca ((2 * nlwp + 2) * sizeof *lwps);
3133 lwps[0] = 0;
3134#endif
3135 for (; nlwp > 0; nlwp--, lwps++)
3136 {
3137 /* First one has already been created above. */
3138 if ((pi = find_procinfo ((*lwps << 16) | pid, 1)) == 0)
3139 pi = init_procinfo ((*lwps << 16) | pid, 0);
3140
234a732d 3141#ifdef UNIXWARE
3780c337 3142 if (pi->prstatus.pr_lwp.pr_flags & (PR_STOPPED | PR_ISTOP))
234a732d 3143#else
3780c337 3144 if (pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP))
234a732d 3145#endif
35f5886e 3146 {
3780c337
MS		 3147 pi->was_stopped = 1;
3148 }
3149 else
3150 {
3151 pi->was_stopped = 0;
3152 if (1 || query ("Process is currently running, stop it? "))
3153 {
3154 long cmd;
3155 /* Make it run again when we close it. */
3156 modify_run_on_last_close_flag (pi->ctl_fd, 1);
234a732d 3157#ifdef PROCFS_USE_READ_WRITE
3780c337
MS		 3158 cmd = PCSTOP;
3159 if (write (pi->ctl_fd, (char *) &cmd, sizeof (long)) < 0)
234a732d 3160#else
3780c337 3161 if (ioctl (pi->ctl_fd, PIOCSTOP, &pi->prstatus) < 0)
234a732d 3162#endif
3780c337
MS		 3163 {
3164 print_sys_errmsg (pi->pathname, errno);
3165 close_proc_file (pi);
3166 error ("PIOCSTOP failed");
3167 }
234a732d 3168#ifdef UNIXWARE
3780c337
MS		 3169 if (!procfs_read_status (pi))
3170 {
3171 print_sys_errmsg (pi->pathname, errno);
3172 close_proc_file (pi);
3173 error ("procfs_read_status failed");
3174 }
234a732d 3175#endif
3780c337
MS		 3176 pi->nopass_next_sigstop = 1;
3177 }
3178 else
3179 {
3180 printf_unfiltered ("Ok, gdb will wait for %s to stop.\n",
3181 target_pid_to_str (pi->pid));
3182 }
35f5886e 3183 }
ec8ceca3 3184
234a732d 3185#ifdef PROCFS_USE_READ_WRITE
3780c337
MS		 3186 fctl.cmd = PCSFAULT;
3187 if (write (pi->ctl_fd, (char *) &fctl, sizeof (struct flt_ctl)) < 0)
3188 print_sys_errmsg ("PCSFAULT failed", errno);
234a732d 3189#else /* PROCFS_USE_READ_WRITE */
3780c337
MS		 3190 if (ioctl (pi->ctl_fd, PIOCSFAULT, &pi->prrun.pr_fault))
3191 {
3192 print_sys_errmsg ("PIOCSFAULT failed", errno);
3193 }
3194 if (ioctl (pi->ctl_fd, PIOCSTRACE, &pi->prrun.pr_trace))
3195 {
3196 print_sys_errmsg ("PIOCSTRACE failed", errno);
3197 }
3198 add_thread (pi->pid);
3199 procfs_set_inferior_syscall_traps (pi);
234a732d 3200#endif /* PROCFS_USE_READ_WRITE */
1e50f1b4 3201 }
35f5886e 3202 attach_flag = 1;
3780c337 3203 return (pi->pid);
35f5886e
FF		 3204}
3205
3206/*
3207
3fbdd536 3208LOCAL FUNCTION
35f5886e 3209
3fbdd536 3210 do_detach -- detach from an attached-to process
35f5886e
FF		 3211
3212SYNOPSIS
3213
3fbdd536 3214 void do_detach (int signal)
35f5886e
FF		 3215
3216DESCRIPTION
3217
3218 Detach from the current attachee.
3219
3220 If signal is non-zero, the attachee is started running again and sent
3221 the specified signal.
3222
3223 If signal is zero and the attachee was not already stopped when we
3224 attached to it, then we make it runnable again when we detach.
3225
3226 Otherwise, we query whether or not to make the attachee runnable
3227 again, since we may simply want to leave it in the state it was in
3228 when we attached.
3229
3230 We report any problems, but do not consider them errors, since we
3231 MUST detach even if some things don't seem to go right. This may not
3232 be the ideal situation. (FIXME).
3233 */
3234
3fbdd536
JG		 3235static void
3236do_detach (signal)
1ab3bf1b 3237 int signal;
35f5886e 3238{
de43d7d0
SG		 3239 struct procinfo *pi;
3240
3780c337 3241 for (pi = procinfo_list; pi; pi = pi->next)
35f5886e 3242 {
3780c337
MS		 3243 if (signal)
3244 {
3245 set_proc_siginfo (pi, signal);
3246 }
234a732d 3247#ifdef PROCFS_USE_READ_WRITE
3780c337
MS		 3248 pi->saved_exitset.cmd = PCSEXIT;
3249 if (write (pi->ctl_fd, (char *) &pi->saved_exitset,
3250 sizeof (struct sys_ctl)) < 0)
234a732d 3251#else
3780c337 3252 if (ioctl (pi->ctl_fd, PIOCSEXIT, &pi->saved_exitset.sysset) < 0)
234a732d 3253#endif
3780c337
MS		 3254 {
3255 print_sys_errmsg (pi->pathname, errno);
3256 printf_unfiltered ("PIOCSEXIT failed.\n");
3257 }
234a732d 3258#ifdef PROCFS_USE_READ_WRITE
3780c337
MS		 3259 pi->saved_entryset.cmd = PCSENTRY;
3260 if (write (pi->ctl_fd, (char *) &pi->saved_entryset,
3261 sizeof (struct sys_ctl)) < 0)
234a732d 3262#else
3780c337 3263 if (ioctl (pi->ctl_fd, PIOCSENTRY, &pi->saved_entryset.sysset) < 0)
234a732d 3264#endif
3780c337
MS		 3265 {
3266 print_sys_errmsg (pi->pathname, errno);
3267 printf_unfiltered ("PIOCSENTRY failed.\n");
3268 }
234a732d 3269#ifdef PROCFS_USE_READ_WRITE
3780c337
MS		 3270 pi->saved_trace.cmd = PCSTRACE;
3271 if (write (pi->ctl_fd, (char *) &pi->saved_trace,
3272 sizeof (struct sig_ctl)) < 0)
234a732d 3273#else
3780c337 3274 if (ioctl (pi->ctl_fd, PIOCSTRACE, &pi->saved_trace.sigset) < 0)
234a732d 3275#endif
3780c337
MS		 3276 {
3277 print_sys_errmsg (pi->pathname, errno);
3278 printf_unfiltered ("PIOCSTRACE failed.\n");
3279 }
234a732d 3280#ifndef UNIXWARE
3780c337
MS		 3281 if (ioctl (pi->ctl_fd, PIOCSHOLD, &pi->saved_sighold.sigset) < 0)
3282 {
3283 print_sys_errmsg (pi->pathname, errno);
3284 printf_unfiltered ("PIOSCHOLD failed.\n");
3285 }
234a732d
GN		 3286#endif
3287#ifdef PROCFS_USE_READ_WRITE
3780c337
MS		 3288 pi->saved_fltset.cmd = PCSFAULT;
3289 if (write (pi->ctl_fd, (char *) &pi->saved_fltset,
3290 sizeof (struct flt_ctl)) < 0)
234a732d 3291#else
3780c337 3292 if (ioctl (pi->ctl_fd, PIOCSFAULT, &pi->saved_fltset.fltset) < 0)
234a732d 3293#endif
3780c337
MS		 3294 {
3295 print_sys_errmsg (pi->pathname, errno);
3296 printf_unfiltered ("PIOCSFAULT failed.\n");
3297 }
3298 if (!procfs_read_status (pi))
3299 {
3300 print_sys_errmsg (pi->pathname, errno);
3301 printf_unfiltered ("procfs_read_status failed.\n");
3302 }
3303 else
3304 {
234a732d 3305#ifdef UNIXWARE
3780c337 3306 if (signal || (pi->prstatus.pr_lwp.pr_flags & (PR_STOPPED | PR_ISTOP)))
234a732d 3307#else
3780c337 3308 if (signal || (pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP)))
234a732d 3309#endif
35f5886e 3310 {
3780c337
MS		 3311 long cmd;
3312 struct proc_ctl pctl;
2592eef8 3313
3780c337
MS		 3314 if (signal || !pi->was_stopped ||
3315 query ("Was stopped when attached, make it runnable again? "))
3316 {
3317 /* Clear any pending signal if we want to detach without
3318 a signal. */
3319 if (signal == 0)
3320 set_proc_siginfo (pi, signal);
3321
3322 /* Clear any fault that might have stopped it. */
234a732d 3323#ifdef PROCFS_USE_READ_WRITE
3780c337
MS		 3324 cmd = PCCFAULT;
3325 if (write (pi->ctl_fd, (char *) &cmd, sizeof (long)) < 0)
234a732d 3326#else
3780c337 3327 if (ioctl (pi->ctl_fd, PIOCCFAULT, 0))
234a732d 3328#endif
3780c337
MS		 3329 {
3330 print_sys_errmsg (pi->pathname, errno);
3331 printf_unfiltered ("PIOCCFAULT failed.\n");
3332 }
ec8ceca3 3333
3780c337 3334 /* Make it run again when we close it. */
8fc2b417 3335
3780c337
MS		 3336 modify_run_on_last_close_flag (pi->ctl_fd, 1);
3337 }
35f5886e
FF		 3338 }
3339 }
3780c337 3340 close_proc_file (pi);
35f5886e 3341 }
35f5886e
FF		 3342 attach_flag = 0;
3343}
3344
45dc9be3
JK		 3345/* emulate wait() as much as possible.
3346 Wait for child to do something. Return pid of child, or -1 in case
3347 of error; store status in *OURSTATUS.
3348
3349 Not sure why we can't
3350 just use wait(), but it seems to have problems when applied to a
3351 process being controlled with the /proc interface.
3352
3353 We have a race problem here with no obvious solution. We need to let
3354 the inferior run until it stops on an event of interest, which means
3355 that we need to use the PIOCWSTOP ioctl. However, we cannot use this
3356 ioctl if the process is already stopped on something that is not an
3357 event of interest, or the call will hang indefinitely. Thus we first
3358 use PIOCSTATUS to see if the process is not stopped. If not, then we
3359 use PIOCWSTOP. But during the window between the two, if the process
3360 stops for any reason that is not an event of interest (such as a job
3361 control signal) then gdb will hang. One possible workaround is to set
3362 an alarm to wake up every minute of so and check to see if the process
3363 is still running, and if so, then reissue the PIOCWSTOP. But this is
3364 a real kludge, so has not been implemented. FIXME: investigate
3365 alternatives.
3366
3367 FIXME: Investigate why wait() seems to have problems with programs
3368 being control by /proc routines. */
3fbdd536 3369static int
45dc9be3 3370procfs_wait (pid, ourstatus)
de43d7d0 3371 int pid;
67ac9759 3372 struct target_waitstatus *ourstatus;
35f5886e
FF		 3373{
3374 short what;
3375 short why;
3376 int statval = 0;
3377 int checkerr = 0;
3378 int rtnval = -1;
de43d7d0 3379 struct procinfo *pi;
234a732d 3380 struct proc_ctl pctl;
de43d7d0 3381
15af627c 3382scan_again:
de43d7d0 3383
15af627c
FL		 3384 /* handle all syscall events first, otherwise we might not
3385 notice a thread was created until too late. */
3386
3387 for (pi = procinfo_list; pi; pi = pi->next)
eca4a350 3388 {
15af627c
FL		 3389 if (!pi->had_event)
3390 continue;
eca4a350 3391
15af627c
FL		 3392#ifdef UNIXWARE
3393 if (! (pi->prstatus.pr_lwp.pr_flags & (PR_STOPPED | PR_ISTOP)) )
3394 continue;
8fc2b417 3395
15af627c
FL		 3396 why = pi->prstatus.pr_lwp.pr_why;
3397 what = pi->prstatus.pr_lwp.pr_what;
3398#else
3399 if (! (pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP)) )
3400 continue;
3401
3402 why = pi->prstatus.pr_why;
3403 what = pi->prstatus.pr_what;
3404#endif
3405 if (why == PR_SYSENTRY || why == PR_SYSEXIT)
3406 {
3407 int i;
3408 int found_handler = 0;
3409
3410 for (i = 0; i < pi->num_syscall_handlers; i++)
3411 if (pi->syscall_handlers[i].syscall_num == what)
3412 {
3413 found_handler = 1;
3414 pi->saved_rtnval = pi->pid;
3415 pi->saved_statval = 0;
3416 if (!pi->syscall_handlers[i].func
3417 (pi, what, why, &pi->saved_rtnval, &pi->saved_statval))
3418 pi->had_event = 0;
3419 break;
3420 }
3421
3422 if (!found_handler)
3423 {
3424 if (why == PR_SYSENTRY)
3425 error ("PR_SYSENTRY, unhandled system call %d", what);
3426 else
3427 error ("PR_SYSEXIT, unhandled system call %d", what);
3428 }
3429 }
eca4a350 3430 }
de43d7d0 3431
15af627c
FL		 3432 /* find a relevant process with an event */
3433
3434 for (pi = procinfo_list; pi; pi = pi->next)
3435 if (pi->had_event && (pid == -1 || pi->pid == pid))
3436 break;
de43d7d0 3437
15af627c
FL		 3438 if (!pi)
3439 {
3440 wait_fd ();
3441 goto scan_again;
3442 }
de43d7d0 3443
234a732d
GN		 3444#ifdef UNIXWARE
3445 if (!checkerr && !(pi->prstatus.pr_lwp.pr_flags & (PR_STOPPED | PR_ISTOP)))
3446#else
de43d7d0 3447 if (!checkerr && !(pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP)))
234a732d 3448#endif
de43d7d0 3449 {
234a732d 3450 if (!procfs_write_pcwstop (pi))
de43d7d0
SG		 3451 {
3452 checkerr++;
3453 }
3780c337 3454 }
35f5886e
FF		 3455 if (checkerr)
3456 {
3457 if (errno == ENOENT)
3458 {
3780c337 3459 /* XXX Fixme -- what to do if attached? Can't call wait... */
35f5886e 3460 rtnval = wait (&statval);
1e50f1b4 3461 if ((rtnval) != (PIDGET (inferior_pid)))
35f5886e 3462 {
de43d7d0 3463 print_sys_errmsg (pi->pathname, errno);
3780c337 3464 error ("procfs_wait: wait failed, returned %d", rtnval);
35f5886e
FF		 3465 /* NOTREACHED */
3466 }
3467 }
3468 else
3469 {
de43d7d0 3470 print_sys_errmsg (pi->pathname, errno);
35f5886e
FF		 3471 error ("PIOCSTATUS or PIOCWSTOP failed.");
3472 /* NOTREACHED */
3473 }
3474 }
1e50f1b4
JM		 3475#ifdef UNIXWARE
3476 else if (pi->prstatus.pr_lwp.pr_flags & (PR_STOPPED | PR_ISTOP))
3477#else
de43d7d0 3478 else if (pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP))
1e50f1b4 3479#endif
35f5886e 3480 {
234a732d
GN		 3481#ifdef UNIXWARE
3482 rtnval = pi->prstatus.pr_pid;
3483 why = pi->prstatus.pr_lwp.pr_why;
3484 what = pi->prstatus.pr_lwp.pr_what;
3485#else
8fc2b417 3486 rtnval = pi->pid;
de43d7d0
SG		 3487 why = pi->prstatus.pr_why;
3488 what = pi->prstatus.pr_what;
234a732d 3489#endif
de43d7d0
SG		 3490
3491 switch (why)
35f5886e 3492 {
de43d7d0 3493 case PR_SIGNALLED:
35f5886e 3494 statval = (what << 8) | 0177;
fb63d460
SG		 3495 break;
3496 case PR_SYSENTRY:
de43d7d0 3497 case PR_SYSEXIT:
15af627c
FL		 3498 rtnval = pi->saved_rtnval;
3499 statval = pi->saved_statval;
de43d7d0
SG		 3500 break;
3501 case PR_REQUESTED:
35f5886e 3502 statval = (SIGSTOP << 8) | 0177;
de43d7d0
SG		 3503 break;
3504 case PR_JOBCONTROL:
35f5886e 3505 statval = (what << 8) | 0177;
de43d7d0
SG		 3506 break;
3507 case PR_FAULTED:
35f5886e
FF		 3508 switch (what)
3509 {
e6b8a171 3510#ifdef FLTWATCH
999dd04b 3511 case FLTWATCH:
e6b8a171
JL		 3512 statval = (SIGTRAP << 8) | 0177;
3513 break;
3514#endif
3515#ifdef FLTKWATCH
999dd04b 3516 case FLTKWATCH:
35f5886e
FF		 3517 statval = (SIGTRAP << 8) | 0177;
3518 break;
e6b8a171 3519#endif
3f5e2fb5
JK		 3520#ifndef FAULTED_USE_SIGINFO
3521 /* Irix, contrary to the documentation, fills in 0 for si_signo.
3522 Solaris fills in si_signo. I'm not sure about others. */
3523 case FLTPRIV:
3524 case FLTILL:
3525 statval = (SIGILL << 8) | 0177;
3526 break;
3527 case FLTBPT:
3528 case FLTTRACE:
3529 statval = (SIGTRAP << 8) | 0177;
3780c337 3530 break;
3f5e2fb5
JK		 3531 case FLTSTACK:
3532 case FLTACCESS:
3533 case FLTBOUNDS:
3534 statval = (SIGSEGV << 8) | 0177;
3535 break;
3536 case FLTIOVF:
3537 case FLTIZDIV:
3538 case FLTFPE:
3539 statval = (SIGFPE << 8) | 0177;
3540 break;
3541 case FLTPAGE: /* Recoverable page fault */
3542#endif /* not FAULTED_USE_SIGINFO */
35f5886e 3543 default:
890634ed
JK		 3544 /* Use the signal which the kernel assigns. This is better than
3545 trying to second-guess it from the fault. In fact, I suspect
3546 that FLTACCESS can be either SIGSEGV or SIGBUS. */
234a732d
GN		 3547#ifdef UNIXWARE
3548 statval = ((pi->prstatus.pr_lwp.pr_info.si_signo) << 8) | 0177;
3549#else
890634ed 3550 statval = ((pi->prstatus.pr_info.si_signo) << 8) | 0177;
234a732d 3551#endif
890634ed 3552 break;
35f5886e 3553 }
de43d7d0
SG		 3554 break;
3555 default:
35f5886e 3556 error ("PIOCWSTOP, unknown why %d, what %d", why, what);
35f5886e 3557 }
f14465c3 3558 /* Stop all the other threads when any of them stops. */
de43d7d0
SG		 3559
3560 {
3780c337 3561 struct procinfo *procinfo, *next_pi;
de43d7d0 3562
3780c337 3563 for (procinfo = procinfo_list; procinfo; procinfo = next_pi)
de43d7d0 3564 {
3780c337 3565 next_pi = procinfo->next;
de43d7d0 3566 if (!procinfo->had_event)
8fc2b417 3567 {
234a732d 3568#ifdef PROCFS_USE_READ_WRITE
1e50f1b4 3569 long cmd = PCSTOP;
234a732d
GN		 3570 if (write (pi->ctl_fd, (char *) &cmd, sizeof (long)) < 0)
3571 {
3572 print_sys_errmsg (procinfo->pathname, errno);
3573 error ("PCSTOP failed");
3574 }
3575#else
8fc2b417
SG		 3576 /* A bug in Solaris (2.5) causes us to hang when trying to
3577 stop a stopped process. So, we have to check first in
3578 order to avoid the hang. */
234a732d 3579 if (!procfs_read_status (procinfo))
8fc2b417 3580 {
3780c337
MS		 3581 /* The LWP has apparently terminated. */
3582 if (info_verbose)
3583 printf_filtered ("LWP %d doesn't respond.\n",
3584 (procinfo->pid >> 16) & 0xffff);
3585 close_proc_file (procinfo);
3586 continue;
8fc2b417 3587 }
234a732d 3588
8fc2b417 3589 if (!(procinfo->prstatus.pr_flags & PR_STOPPED))
3780c337
MS		 3590 if (ioctl (procinfo->ctl_fd, PIOCSTOP, &procinfo->prstatus)
3591 < 0)
8fc2b417
SG		 3592 {
3593 print_sys_errmsg (procinfo->pathname, errno);
3780c337 3594 warning ("PIOCSTOP failed");
8fc2b417 3595 }
234a732d 3596#endif
8fc2b417 3597 }
de43d7d0
SG		 3598 }
3599 }
35f5886e
FF		 3600 }
3601 else
3602 {
1e50f1b4
JM		 3603 error ("PIOCWSTOP, stopped for unknown/unhandled reason, flags %#x",
3604#ifdef UNIXWARE
3605 pi->prstatus.pr_lwp.pr_flags);
3606#else
de43d7d0 3607 pi->prstatus.pr_flags);
1e50f1b4 3608#endif
35f5886e 3609 }
3fbdd536 3610
67ac9759 3611 store_waitstatus (ourstatus, statval);
3fbdd536
JG		 3612
3613 if (rtnval == -1) /* No more children to wait for */
3614 {
3780c337 3615 warning ("Child process unexpectedly missing");
67ac9759
JK		 3616 /* Claim it exited with unknown signal. */
3617 ourstatus->kind = TARGET_WAITKIND_SIGNALLED;
3618 ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
3fbdd536
JG		 3619 return rtnval;
3620 }
3621
de43d7d0 3622 pi->had_event = 0; /* Indicate that we've seen this one */
35f5886e
FF		 3623 return (rtnval);
3624}
3625
3626/*
3627
6b801388
FF		 3628LOCAL FUNCTION
3629
3630 set_proc_siginfo - set a process's current signal info
3631
3632SYNOPSIS
3633
3634 void set_proc_siginfo (struct procinfo *pip, int signo);
3635
3636DESCRIPTION
3637
3638 Given a pointer to a process info struct in PIP and a signal number
3639 in SIGNO, set the process's current signal and its associated signal
3640 information. The signal will be delivered to the process immediately
3641 after execution is resumed, even if it is being held. In addition,
3642 this particular delivery will not cause another PR_SIGNALLED stop
3643 even if the signal is being traced.
3644
3645 If we are not delivering the same signal that the prstatus siginfo
3646 struct contains information about, then synthesize a siginfo struct
3647 to match the signal we are doing to deliver, make it of the type
3648 "generated by a user process", and send this synthesized copy. When
3649 used to set the inferior's signal state, this will be required if we
3650 are not currently stopped because of a traced signal, or if we decide
3651 to continue with a different signal.
3652
3653 Note that when continuing the inferior from a stop due to receipt
3654 of a traced signal, we either have set PRCSIG to clear the existing
3655 signal, or we have to call this function to do a PIOCSSIG with either
3656 the existing siginfo struct from pr_info, or one we have synthesized
3657 appropriately for the signal we want to deliver. Otherwise if the
3658 signal is still being traced, the inferior will immediately stop
3659 again.
3660
3661 See siginfo(5) for more details.
3662*/
3663
3664static void
3665set_proc_siginfo (pip, signo)
cc221e76
FF		 3666 struct procinfo *pip;
3667 int signo;
6b801388
FF		 3668{
3669 struct siginfo newsiginfo;
3670 struct siginfo *sip;
234a732d 3671 struct sigi_ctl sictl;
6b801388 3672
2592eef8
PS		 3673#ifdef PROCFS_DONT_PIOCSSIG_CURSIG
3674 /* With Alpha OSF/1 procfs, the kernel gets really confused if it
a1a0d974 3675 receives a PIOCSSIG with a signal identical to the current signal,
2592eef8 3676 it messes up the current signal. Work around the kernel bug. */
234a732d
GN		 3677#ifdef UNIXWARE
3678 if (signo == pip -> prstatus.pr_lwp.pr_cursig)
3679#else
2592eef8 3680 if (signo == pip -> prstatus.pr_cursig)
234a732d 3681#endif
2592eef8
PS		 3682 return;
3683#endif
3684
234a732d
GN		 3685#ifdef UNIXWARE
3686 if (signo == pip->prstatus.pr_lwp.pr_info.si_signo)
3687 {
3688 memcpy ((char *) &sictl.siginfo, (char *) &pip->prstatus.pr_lwp.pr_info,
3689 sizeof (siginfo_t));
3690 }
3691#else
de43d7d0 3692 if (signo == pip -> prstatus.pr_info.si_signo)
6b801388 3693 {
de43d7d0
SG		 3694 sip = &pip -> prstatus.pr_info;
3695 }
234a732d 3696#endif
de43d7d0
SG		 3697 else
3698 {
234a732d
GN		 3699#ifdef UNIXWARE
3700 siginfo_t *sip = &sictl.siginfo;
3701 memset ((char *) sip, 0, sizeof (siginfo_t));
3702#else
de43d7d0
SG		 3703 memset ((char *) &newsiginfo, 0, sizeof (newsiginfo));
3704 sip = &newsiginfo;
234a732d 3705#endif
de43d7d0
SG		 3706 sip -> si_signo = signo;
3707 sip -> si_code = 0;
3708 sip -> si_errno = 0;
3709 sip -> si_pid = getpid ();
3710 sip -> si_uid = getuid ();
3711 }
234a732d
GN		 3712#ifdef PROCFS_USE_READ_WRITE
3713 sictl.cmd = PCSSIG;
3714 if (write (pip->ctl_fd, (char *) &sictl, sizeof (struct sigi_ctl)) < 0)
3715#else
3716 if (ioctl (pip->ctl_fd, PIOCSSIG, sip) < 0)
3717#endif
de43d7d0
SG		 3718 {
3719 print_sys_errmsg (pip -> pathname, errno);
3720 warning ("PIOCSSIG failed");
6b801388
FF		 3721 }
3722}
3723
25286543 3724/* Resume execution of process PID. If STEP is nozero, then
59ba57da
JK		 3725 just single step it. If SIGNAL is nonzero, restart it with that
3726 signal activated. */
35f5886e 3727
3fbdd536 3728static void
25286543
SG		 3729procfs_resume (pid, step, signo)
3730 int pid;
1ab3bf1b 3731 int step;
67ac9759 3732 enum target_signal signo;
35f5886e 3733{
59ba57da 3734 int signal_to_pass;
3780c337 3735 struct procinfo *pi, *procinfo, *next_pi;
234a732d 3736 struct proc_ctl pctl;
de43d7d0
SG		 3737
3738 pi = find_procinfo (pid == -1 ? inferior_pid : pid, 0);
59ba57da 3739
35f5886e 3740 errno = 0;
234a732d
GN		 3741#ifdef UNIXWARE
3742 pctl.cmd = PCRUN;
3743 pctl.data = PRCFAULT;
3744#else
de43d7d0 3745 pi->prrun.pr_flags = PRSTRACE | PRSFAULT | PRCFAULT;
234a732d 3746#endif
99fd9e3e 3747
59ba57da
JK		 3748#if 0
3749 /* It should not be necessary. If the user explicitly changes the value,
3750 value_assign calls write_register_bytes, which writes it. */
3751/* It may not be absolutely necessary to specify the PC value for
3752 restarting, but to be safe we use the value that gdb considers
3753 to be current. One case where this might be necessary is if the
3754 user explicitly changes the PC value that gdb considers to be
3755 current. FIXME: Investigate if this is necessary or not. */
3756
c3192172 3757#ifdef PRSVADDR_BROKEN
99fd9e3e
SG		 3758/* Can't do this under Solaris running on a Sparc, as there seems to be no
3759 place to put nPC. In fact, if you use this, nPC seems to be set to some
3760 random garbage. We have to rely on the fact that PC and nPC have been
3761 written previously via PIOCSREG during a register flush. */
3762
de43d7d0
SG		 3763 pi->prrun.pr_vaddr = (caddr_t) *(int *) &registers[REGISTER_BYTE (PC_REGNUM)];
3764 pi->prrun.pr_flags != PRSVADDR;
99fd9e3e 3765#endif
59ba57da
JK		 3766#endif
3767
67ac9759 3768 if (signo == TARGET_SIGNAL_STOP && pi->nopass_next_sigstop)
59ba57da
JK		 3769 /* When attaching to a child process, if we forced it to stop with
3770 a PIOCSTOP, then we will have set the nopass_next_sigstop flag.
3771 Upon resuming the first time after such a stop, we explicitly
3772 inhibit sending it another SIGSTOP, which would be the normal
3773 result of default signal handling. One potential drawback to
3774 this is that we will also ignore any attempt to by the user
3775 to explicitly continue after the attach with a SIGSTOP. Ultimately
3776 this problem should be dealt with by making the routines that
3777 deal with the inferior a little smarter, and possibly even allow
3778 an inferior to continue running at the same time as gdb. (FIXME?) */
3779 signal_to_pass = 0;
67ac9759 3780 else if (signo == TARGET_SIGNAL_TSTP
234a732d
GN		 3781#ifdef UNIXWARE
3782 && pi->prstatus.pr_lwp.pr_cursig == SIGTSTP
3780c337 3783 && pi->prstatus.pr_lwp.pr_action.sa_handler == SIG_DFL
234a732d 3784#else
de43d7d0 3785 && pi->prstatus.pr_cursig == SIGTSTP
3780c337 3786 && pi->prstatus.pr_action.sa_handler == SIG_DFL
234a732d 3787#endif
3780c337 3788 )
59ba57da
JK		 3789
3790 /* We are about to pass the inferior a SIGTSTP whose action is
3791 SIG_DFL. The SIG_DFL action for a SIGTSTP is to stop
3792 (notifying the parent via wait()), and then keep going from the
3793 same place when the parent is ready for you to keep going. So
3794 under the debugger, it should do nothing (as if the program had
3795 been stopped and then later resumed. Under ptrace, this
3796 happens for us, but under /proc, the system obligingly stops
3797 the process, and wait_for_inferior would have no way of
3798 distinguishing that type of stop (which indicates that we
3799 should just start it again), with a stop due to the pr_trace
3800 field of the prrun_t struct.
3801
3802 Note that if the SIGTSTP is being caught, we *do* need to pass it,
3803 because the handler needs to get executed. */
3804 signal_to_pass = 0;
3805 else
67ac9759 3806 signal_to_pass = target_signal_to_host (signo);
99fd9e3e 3807
59ba57da 3808 if (signal_to_pass)
35f5886e 3809 {
de43d7d0 3810 set_proc_siginfo (pi, signal_to_pass);
35f5886e
FF		 3811 }
3812 else
3813 {
234a732d
GN		 3814#ifdef UNIXWARE
3815 pctl.data |= PRCSIG;
3816#else
de43d7d0 3817 pi->prrun.pr_flags |= PRCSIG;
234a732d 3818#endif
35f5886e 3819 }
de43d7d0 3820 pi->nopass_next_sigstop = 0;
35f5886e
FF		 3821 if (step)
3822 {
234a732d
GN		 3823#ifdef UNIXWARE
3824 pctl.data |= PRSTEP;
3825#else
de43d7d0 3826 pi->prrun.pr_flags |= PRSTEP;
234a732d 3827#endif
35f5886e 3828 }
3780c337 3829 pi->had_event = 0;
8fc2b417
SG		 3830 /* Don't try to start a process unless it's stopped on an
3831 `event of interest'. Doing so will cause errors. */
3832
3780c337
MS		 3833 if (!procfs_read_status (pi))
3834 {
3835 /* The LWP has apparently terminated. */
3836 if (info_verbose)
3837 printf_filtered ("LWP %d doesn't respond.\n",
3838 (pi->pid >> 16) & 0xffff);
3839 close_proc_file (pi);
3840 }
3841 else
3842 {
234a732d 3843#ifdef PROCFS_USE_READ_WRITE
3780c337 3844 if (write (pi->ctl_fd, (char *) &pctl, sizeof (struct proc_ctl)) < 0)
234a732d 3845#else
3780c337
MS		 3846 if ((pi->prstatus.pr_flags & PR_ISTOP)
3847 && ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0)
234a732d 3848#endif
3780c337
MS		 3849 {
3850 /* The LWP has apparently terminated. */
3851 if (info_verbose)
3852 printf_filtered ("LWP %d doesn't respond.\n",
3853 (pi->pid >> 16) & 0xffff);
3854 close_proc_file (pi);
3855 }
35f5886e 3856 }
de43d7d0 3857
3780c337
MS		 3858 /* Continue all the other threads that haven't had an event of interest.
3859 Also continue them if they have NOPASS_NEXT_SIGSTOP set; this is only
3860 set by do_attach, and means this is the first resume after an attach.
3861 All threads were CSTOP'd by do_attach, and should be resumed now. */
de43d7d0
SG		 3862
3863 if (pid == -1)
3780c337 3864 for (procinfo = procinfo_list; procinfo; procinfo = next_pi)
de43d7d0 3865 {
3780c337
MS		 3866 next_pi = procinfo->next;
3867 if (pi != procinfo)
3868 if (!procinfo->had_event ||
3869 (procinfo->nopass_next_sigstop && signo == TARGET_SIGNAL_STOP))
3870 {
3871 procinfo->had_event = procinfo->nopass_next_sigstop = 0;
234a732d 3872#ifdef PROCFS_USE_READ_WRITE
3780c337
MS		 3873 pctl.data = PRCFAULT | PRCSIG;
3874 if (write (procinfo->ctl_fd, (char *) &pctl,
3875 sizeof (struct proc_ctl)) < 0)
3876 {
3877 if (!procfs_read_status (procinfo))
3878 fprintf_unfiltered(gdb_stderr,
3879 "procfs_read_status failed, errno=%d\n",
3880 errno);
3881 print_sys_errmsg (procinfo->pathname, errno);
3882 error ("PCRUN failed");
3883 }
234a732d 3884#else
3780c337
MS		 3885 procinfo->prrun.pr_flags &= PRSTEP;
3886 procinfo->prrun.pr_flags |= PRCFAULT | PRCSIG;
3887 if (!procfs_read_status (procinfo))
3888 {
3889 /* The LWP has apparently terminated. */
3890 if (info_verbose)
3891 printf_filtered ("LWP %d doesn't respond.\n",
3892 (procinfo->pid >> 16) & 0xffff);
3893 close_proc_file (procinfo);
3894 continue;
3895 }
8fc2b417 3896
3780c337
MS		 3897 /* Don't try to start a process unless it's stopped on an
3898 `event of interest'. Doing so will cause errors. */
8fc2b417 3899
3780c337
MS		 3900 if ((procinfo->prstatus.pr_flags & PR_ISTOP)
3901 && ioctl (procinfo->ctl_fd, PIOCRUN, &procinfo->prrun) < 0)
3902 {
3903 if (!procfs_read_status (procinfo))
3904 fprintf_unfiltered(gdb_stderr,
3905 "procfs_read_status failed, errno=%d\n",
3906 errno);
3907 print_sys_errmsg (procinfo->pathname, errno);
3908 warning ("PIOCRUN failed");
3909 }
1e50f1b4 3910#endif
3780c337
MS		 3911 }
3912 procfs_read_status (procinfo);
de43d7d0 3913 }
35f5886e
FF		 3914}
3915
3916/*
3917
3fbdd536 3918LOCAL FUNCTION
35f5886e 3919
3fbdd536 3920 procfs_fetch_registers -- fetch current registers from inferior
35f5886e
FF		 3921
3922SYNOPSIS
3923
3fbdd536 3924 void procfs_fetch_registers (int regno)
35f5886e
FF		 3925
3926DESCRIPTION
3927
3928 Read the current values of the inferior's registers, both the
3929 general register set and floating point registers (if supported)
3930 and update gdb's idea of their current values.
3931
3932*/
3933
3fbdd536
JG		 3934static void
3935procfs_fetch_registers (regno)
1ab3bf1b 3936 int regno;
35f5886e 3937{
de43d7d0
SG		 3938 struct procinfo *pi;
3939
3940 pi = current_procinfo;
3941
234a732d
GN		 3942#ifdef UNIXWARE
3943 if (procfs_read_status (pi))
3944 {
3945 supply_gregset (&pi->prstatus.pr_lwp.pr_context.uc_mcontext.gregs);
3946#if defined (FP0_REGNUM)
3947 supply_fpregset (&pi->prstatus.pr_lwp.pr_context.uc_mcontext.fpregs);
3948#endif
3949 }
3950#else /* UNIXWARE */
3951 if (ioctl (pi->ctl_fd, PIOCGREG, &pi->gregset.gregset) != -1)
35f5886e 3952 {
234a732d 3953 supply_gregset (&pi->gregset.gregset);
35f5886e
FF		 3954 }
3955#if defined (FP0_REGNUM)
234a732d 3956 if (ioctl (pi->ctl_fd, PIOCGFPREG, &pi->fpregset.fpregset) != -1)
35f5886e 3957 {
234a732d 3958 supply_fpregset (&pi->fpregset.fpregset);
35f5886e
FF		 3959 }
3960#endif
234a732d 3961#endif /* UNIXWARE */
35f5886e
FF		 3962}
3963
fb182850
FF		 3964/*
3965
35f5886e
FF		 3966LOCAL FUNCTION
3967
3780c337 3968 proc_init_failed - called when /proc access initialization fails
de43d7d0 3969fails
35f5886e
FF		 3970
3971SYNOPSIS
3972
3780c337
MS		 3973 static void proc_init_failed (struct procinfo *pi,
3974 char *why, int kill_p)
35f5886e
FF		 3975
3976DESCRIPTION
3977
3978 This function is called whenever initialization of access to a /proc
3979 entry fails. It prints a suitable error message, does some cleanup,
3980 and then invokes the standard error processing routine which dumps
3780c337 3981 us back into the command loop. If KILL_P is true, sends SIGKILL.
35f5886e
FF		 3982 */
3983
3984static void
3780c337 3985proc_init_failed (pi, why, kill_p)
de43d7d0 3986 struct procinfo *pi;
1ab3bf1b 3987 char *why;
3780c337 3988 int kill_p;
35f5886e 3989{
de43d7d0 3990 print_sys_errmsg (pi->pathname, errno);
3780c337
MS		 3991 if (kill_p)
3992 kill (pi->pid, SIGKILL);
de43d7d0 3993 close_proc_file (pi);
35f5886e
FF		 3994 error (why);
3995 /* NOTREACHED */
3996}
3997
3998/*
3999
4000LOCAL FUNCTION
4001
4002 close_proc_file - close any currently open /proc entry
4003
4004SYNOPSIS
4005
a39ad5ce 4006 static void close_proc_file (struct procinfo *pip)
35f5886e
FF		 4007
4008DESCRIPTION
4009
4010 Close any currently open /proc entry and mark the process information
4011 entry as invalid. In order to ensure that we don't try to reuse any
4012 stale information, the pid, fd, and pathnames are explicitly
4013 invalidated, which may be overkill.
4014
4015 */
4016
4017static void
1ab3bf1b
JG		 4018close_proc_file (pip)
4019 struct procinfo *pip;
35f5886e 4020{
de43d7d0
SG		 4021 struct procinfo *procinfo;
4022
3780c337 4023 delete_thread (pip->pid); /* remove thread from GDB's thread list */
de43d7d0
SG		 4024 remove_fd (pip); /* Remove fd from poll/select list */
4025
234a732d
GN		 4026 close (pip->ctl_fd);
4027#ifdef HAVE_MULTIPLE_PROC_FDS
4028 close (pip->as_fd);
4029 close (pip->status_fd);
4030 close (pip->map_fd);
4031#endif
de43d7d0
SG		 4032
4033 free (pip -> pathname);
4034
4035 /* Unlink pip from the procinfo chain. Note pip might not be on the list. */
4036
4037 if (procinfo_list == pip)
4038 procinfo_list = pip->next;
4039 else
234a732d
GN		 4040 {
4041 for (procinfo = procinfo_list; procinfo; procinfo = procinfo->next)
4042 {
4043 if (procinfo->next == pip)
4044 {
4045 procinfo->next = pip->next;
4046 break;
4047 }
4048 }
4049 free (pip);
4050 }
35f5886e
FF		 4051}
4052
4053/*
4054
4055LOCAL FUNCTION
4056
4057 open_proc_file - open a /proc entry for a given process id
4058
4059SYNOPSIS
4060
ec8ceca3 4061 static int open_proc_file (int pid, struct procinfo *pip, int mode)
35f5886e
FF		 4062
4063DESCRIPTION
4064
ec8ceca3
JG		 4065 Given a process id and a mode, close the existing open /proc
4066 entry (if any) and open one for the new process id, in the
4067 specified mode. Once it is open, then mark the local process
4068 information structure as valid, which guarantees that the pid,
4069 fd, and pathname fields match an open /proc entry. Returns
4070 zero if the open fails, nonzero otherwise.
35f5886e
FF		 4071
4072 Note that the pathname is left intact, even when the open fails,
4073 so that callers can use it to construct meaningful error messages
4074 rather than just "file open failed".
8fc2b417
SG		 4075
4076 Note that for Solaris, the process-id also includes an LWP-id, so we
4077 actually attempt to open that. If we are handed a pid with a 0 LWP-id,
4078 then we will ask the kernel what it is and add it to the pid. Hence,
4079 the pid can be changed by us.
35f5886e
FF		 4080 */
4081
4082static int
234a732d 4083open_proc_file (pid, pip, mode, control)
1ab3bf1b
JG		 4084 int pid;
4085 struct procinfo *pip;
ec8ceca3 4086 int mode;
234a732d 4087 int control;
35f5886e 4088{
8fc2b417
SG		 4089 int tmp, tmpfd;
4090
de43d7d0
SG		 4091 pip -> next = NULL;
4092 pip -> had_event = 0;
234a732d 4093 pip -> pathname = xmalloc (MAX_PROC_NAME_SIZE);
de43d7d0
SG		 4094 pip -> pid = pid;
4095
8fc2b417
SG		 4096#ifndef PIOCOPENLWP
4097 tmp = pid;
4098#else
4099 tmp = pid & 0xffff;
4100#endif
4101
234a732d
GN		 4102#ifdef HAVE_MULTIPLE_PROC_FDS
4103 sprintf (pip->pathname, STATUS_PROC_NAME_FMT, tmp);
4104 if ((pip->status_fd = open (pip->pathname, O_RDONLY)) < 0)
4105 {
4106 return 0;
4107 }
4108
4109 sprintf (pip->pathname, AS_PROC_NAME_FMT, tmp);
4110 if ((pip->as_fd = open (pip->pathname, O_RDWR)) < 0)
4111 {
4112 close (pip->status_fd);
4113 return 0;
4114 }
4115
4116 sprintf (pip->pathname, MAP_PROC_NAME_FMT, tmp);
4117 if ((pip->map_fd = open (pip->pathname, O_RDONLY)) < 0)
4118 {
4119 close (pip->status_fd);
4120 close (pip->as_fd);
4121 return 0;
4122 }
4123
4124 sprintf (pip->pathname, MAP_PROC_NAME_FMT, tmp);
4125 if ((pip->map_fd = open (pip->pathname, O_RDONLY)) < 0)
4126 {
4127 close (pip->status_fd);
4128 close (pip->as_fd);
4129 return 0;
4130 }
4131
4132 if (control)
4133 {
4134 sprintf (pip->pathname, CTL_PROC_NAME_FMT, tmp);
4135 if ((pip->ctl_fd = open (pip->pathname, O_WRONLY)) < 0)
4136 {
4137 close (pip->status_fd);
4138 close (pip->as_fd);
4139 close (pip->map_fd);
4140 return 0;
3780c337 4141 }
234a732d
GN		 4142 }
4143
4144#else /* HAVE_MULTIPLE_PROC_FDS */
4145 sprintf (pip -> pathname, CTL_PROC_NAME_FMT, tmp);
4146
8fc2b417 4147 if ((tmpfd = open (pip -> pathname, mode)) < 0)
de43d7d0
SG		 4148 return 0;
4149
8fc2b417 4150#ifndef PIOCOPENLWP
234a732d
GN		 4151 pip -> ctl_fd = tmpfd;
4152 pip -> as_fd = tmpfd;
4153 pip -> map_fd = tmpfd;
4154 pip -> status_fd = tmpfd;
8fc2b417
SG		 4155#else
4156 tmp = (pid >> 16) & 0xffff; /* Extract thread id */
4157
4158 if (tmp == 0)
4159 { /* Don't know thread id yet */
4160 if (ioctl (tmpfd, PIOCSTATUS, &pip -> prstatus) < 0)
4161 {
4162 print_sys_errmsg (pip -> pathname, errno);
4163 close (tmpfd);
4164 error ("open_proc_file: PIOCSTATUS failed");
4165 }
4166
4167 tmp = pip -> prstatus.pr_who; /* Get thread id from prstatus_t */
4168 pip -> pid = (tmp << 16) | pid; /* Update pip */
4169 }
4170
234a732d 4171 if ((pip -> ctl_fd = ioctl (tmpfd, PIOCOPENLWP, &tmp)) < 0)
8fc2b417
SG		 4172 {
4173 close (tmpfd);
4174 return 0;
4175 }
4176
4177#ifdef PIOCSET /* New method */
4178 {
4179 long pr_flags;
4180 pr_flags = PR_ASYNC;
234a732d 4181 ioctl (pip -> ctl_fd, PIOCSET, &pr_flags);
8fc2b417
SG		 4182 }
4183#endif
4184
234a732d
GN		 4185 /* keep extra fds in sync */
4186 pip->as_fd = pip->ctl_fd;
4187 pip->map_fd = pip->ctl_fd;
4188 pip->status_fd = pip->ctl_fd;
4189
8fc2b417
SG		 4190 close (tmpfd); /* All done with main pid */
4191#endif /* PIOCOPENLWP */
4192
234a732d
GN		 4193#endif /* HAVE_MULTIPLE_PROC_FDS */
4194
de43d7d0 4195 return 1;
a39ad5ce
FF		 4196}
4197
f66f459f 4198static char *
1ab3bf1b
JG		 4199mappingflags (flags)
4200 long flags;
a39ad5ce 4201{
5c1c5e67 4202 static char asciiflags[8];
a39ad5ce 4203
5c1c5e67
FF		 4204 strcpy (asciiflags, "-------");
4205#if defined (MA_PHYS)
4206 if (flags & MA_PHYS) asciiflags[0] = 'd';
4207#endif
4208 if (flags & MA_STACK) asciiflags[1] = 's';
4209 if (flags & MA_BREAK) asciiflags[2] = 'b';
4210 if (flags & MA_SHARED) asciiflags[3] = 's';
4211 if (flags & MA_READ) asciiflags[4] = 'r';
4212 if (flags & MA_WRITE) asciiflags[5] = 'w';
4213 if (flags & MA_EXEC) asciiflags[6] = 'x';
a39ad5ce
FF		 4214 return (asciiflags);
4215}
4216
4217static void
cc221e76
FF		 4218info_proc_flags (pip, summary)
4219 struct procinfo *pip;
4220 int summary;
4221{
4222 struct trans *transp;
234a732d
GN		 4223#ifdef UNIXWARE
4224 long flags = pip->prstatus.pr_flags | pip->prstatus.pr_lwp.pr_flags;
4225#else
4226 long flags = pip->prstatus.pr_flags;
4227#endif
cc221e76
FF		 4228
4229 printf_filtered ("%-32s", "Process status flags:");
4230 if (!summary)
4231 {
4232 printf_filtered ("\n\n");
4233 }
4234 for (transp = pr_flag_table; transp -> name != NULL; transp++)
4235 {
234a732d 4236 if (flags & transp -> value)
cc221e76
FF		 4237 {
4238 if (summary)
4239 {
4240 printf_filtered ("%s ", transp -> name);
4241 }
4242 else
4243 {
4244 printf_filtered ("\t%-16s %s.\n", transp -> name, transp -> desc);
4245 }
4246 }
4247 }
4248 printf_filtered ("\n");
4249}
4250
4251static void
4252info_proc_stop (pip, summary)
4253 struct procinfo *pip;
4254 int summary;
4255{
4256 struct trans *transp;
4257 int why;
4258 int what;
4259
234a732d
GN		 4260#ifdef UNIXWARE
4261 why = pip -> prstatus.pr_lwp.pr_why;
4262 what = pip -> prstatus.pr_lwp.pr_what;
4263#else
cc221e76
FF		 4264 why = pip -> prstatus.pr_why;
4265 what = pip -> prstatus.pr_what;
234a732d 4266#endif
cc221e76 4267
234a732d
GN		 4268#ifdef UNIXWARE
4269 if (pip -> prstatus.pr_lwp.pr_flags & PR_STOPPED)
4270#else
cc221e76 4271 if (pip -> prstatus.pr_flags & PR_STOPPED)
234a732d 4272#endif
cc221e76
FF		 4273 {
4274 printf_filtered ("%-32s", "Reason for stopping:");
4275 if (!summary)
4276 {
4277 printf_filtered ("\n\n");
4278 }
4279 for (transp = pr_why_table; transp -> name != NULL; transp++)
4280 {
4281 if (why == transp -> value)
4282 {
4283 if (summary)
4284 {
4285 printf_filtered ("%s ", transp -> name);
4286 }
4287 else
4288 {
4289 printf_filtered ("\t%-16s %s.\n",
4290 transp -> name, transp -> desc);
4291 }
4292 break;
4293 }
4294 }
4295
4296 /* Use the pr_why field to determine what the pr_what field means, and
4297 print more information. */
4298
4299 switch (why)
4300 {
4301 case PR_REQUESTED:
4302 /* pr_what is unused for this case */
4303 break;
4304 case PR_JOBCONTROL:
4305 case PR_SIGNALLED:
4306 if (summary)
4307 {
4308 printf_filtered ("%s ", signalname (what));
4309 }
4310 else
4311 {
4312 printf_filtered ("\t%-16s %s.\n", signalname (what),
4ace50a5 4313 safe_strsignal (what));
cc221e76
FF		 4314 }
4315 break;
4316 case PR_SYSENTRY:
4317 if (summary)
4318 {
4319 printf_filtered ("%s ", syscallname (what));
4320 }
4321 else
4322 {
4323 printf_filtered ("\t%-16s %s.\n", syscallname (what),
4324 "Entered this system call");
4325 }
4326 break;
4327 case PR_SYSEXIT:
4328 if (summary)
4329 {
4330 printf_filtered ("%s ", syscallname (what));
4331 }
4332 else
4333 {
4334 printf_filtered ("\t%-16s %s.\n", syscallname (what),
4335 "Returned from this system call");
4336 }
4337 break;
4338 case PR_FAULTED:
4339 if (summary)
4340 {
4341 printf_filtered ("%s ",
4342 lookupname (faults_table, what, "fault"));
4343 }
4344 else
4345 {
4346 printf_filtered ("\t%-16s %s.\n",
4347 lookupname (faults_table, what, "fault"),
4348 lookupdesc (faults_table, what));
4349 }
4350 break;
4351 }
4352 printf_filtered ("\n");
4353 }
4354}
4355
4356static void
4357info_proc_siginfo (pip, summary)
4358 struct procinfo *pip;
4359 int summary;
4360{
4361 struct siginfo *sip;
4362
234a732d
GN		 4363#ifdef UNIXWARE
4364 if ((pip -> prstatus.pr_lwp.pr_flags & PR_STOPPED) &&
4365 (pip -> prstatus.pr_lwp.pr_why == PR_SIGNALLED ||
4366 pip -> prstatus.pr_lwp.pr_why == PR_FAULTED))
4367#else
cc221e76
FF		 4368 if ((pip -> prstatus.pr_flags & PR_STOPPED) &&
4369 (pip -> prstatus.pr_why == PR_SIGNALLED ||
4370 pip -> prstatus.pr_why == PR_FAULTED))
234a732d 4371#endif
cc221e76
FF		 4372 {
4373 printf_filtered ("%-32s", "Additional signal/fault info:");
234a732d
GN		 4374#ifdef UNIXWARE
4375 sip = &pip -> prstatus.pr_lwp.pr_info;
4376#else
cc221e76 4377 sip = &pip -> prstatus.pr_info;
234a732d 4378#endif
cc221e76
FF		 4379 if (summary)
4380 {
4381 printf_filtered ("%s ", signalname (sip -> si_signo));
4382 if (sip -> si_errno > 0)
4383 {
4ace50a5 4384 printf_filtered ("%s ", errnoname (sip -> si_errno));
cc221e76
FF		 4385 }
4386 if (sip -> si_code <= 0)
4387 {
25286543
SG		 4388 printf_filtered ("sent by %s, uid %d ",
4389 target_pid_to_str (sip -> si_pid),
cc221e76
FF		 4390 sip -> si_uid);
4391 }
4392 else
4393 {
4394 printf_filtered ("%s ", sigcodename (sip));
4395 if ((sip -> si_signo == SIGILL) ||
4396 (sip -> si_signo == SIGFPE) ||
4397 (sip -> si_signo == SIGSEGV) ||
4398 (sip -> si_signo == SIGBUS))
4399 {
b9e58503
PS		 4400 printf_filtered ("addr=%#lx ",
4401 (unsigned long) sip -> si_addr);
cc221e76
FF		 4402 }
4403 else if ((sip -> si_signo == SIGCHLD))
4404 {
25286543
SG		 4405 printf_filtered ("child %s, status %u ",
4406 target_pid_to_str (sip -> si_pid),
cc221e76
FF		 4407 sip -> si_status);
4408 }
4409 else if ((sip -> si_signo == SIGPOLL))
4410 {
4411 printf_filtered ("band %u ", sip -> si_band);
4412 }
4413 }
4414 }
4415 else
4416 {
4417 printf_filtered ("\n\n");
4418 printf_filtered ("\t%-16s %s.\n", signalname (sip -> si_signo),
4ace50a5 4419 safe_strsignal (sip -> si_signo));
cc221e76
FF		 4420 if (sip -> si_errno > 0)
4421 {
4422 printf_filtered ("\t%-16s %s.\n",
4ace50a5
FF		 4423 errnoname (sip -> si_errno),
4424 safe_strerror (sip -> si_errno));
cc221e76
FF		 4425 }
4426 if (sip -> si_code <= 0)
4427 {
25286543 4428 printf_filtered ("\t%-16u %s\n", sip -> si_pid, /* XXX need target_pid_to_str() */
cc221e76
FF		 4429 "PID of process sending signal");
4430 printf_filtered ("\t%-16u %s\n", sip -> si_uid,
4431 "UID of process sending signal");
4432 }
4433 else
4434 {
4435 printf_filtered ("\t%-16s %s.\n", sigcodename (sip),
4436 sigcodedesc (sip));
4437 if ((sip -> si_signo == SIGILL) ||
4438 (sip -> si_signo == SIGFPE))
4439 {
b9e58503
PS		 4440 printf_filtered ("\t%#-16lx %s.\n",
4441 (unsigned long) sip -> si_addr,
cc221e76
FF		 4442 "Address of faulting instruction");
4443 }
4444 else if ((sip -> si_signo == SIGSEGV) ||
4445 (sip -> si_signo == SIGBUS))
4446 {
b9e58503
PS		 4447 printf_filtered ("\t%#-16lx %s.\n",
4448 (unsigned long) sip -> si_addr,
cc221e76
FF		 4449 "Address of faulting memory reference");
4450 }
4451 else if ((sip -> si_signo == SIGCHLD))
4452 {
25286543 4453 printf_filtered ("\t%-16u %s.\n", sip -> si_pid, /* XXX need target_pid_to_str() */
cc221e76
FF		 4454 "Child process ID");
4455 printf_filtered ("\t%-16u %s.\n", sip -> si_status,
4456 "Child process exit value or signal");
4457 }
4458 else if ((sip -> si_signo == SIGPOLL))
4459 {
4460 printf_filtered ("\t%-16u %s.\n", sip -> si_band,
4461 "Band event for POLL_{IN,OUT,MSG}");
4462 }
4463 }
4464 }
4465 printf_filtered ("\n");
4466 }
4467}
4468
4469static void
4470info_proc_syscalls (pip, summary)
4471 struct procinfo *pip;
4472 int summary;
4473{
4474 int syscallnum;
4475
4476 if (!summary)
4477 {
4478
4479#if 0 /* FIXME: Needs to use gdb-wide configured info about system calls. */
4480 if (pip -> prstatus.pr_flags & PR_ASLEEP)
4481 {
4482 int syscallnum = pip -> prstatus.pr_reg[R_D0];
4483 if (summary)
4484 {
4485 printf_filtered ("%-32s", "Sleeping in system call:");
4486 printf_filtered ("%s", syscallname (syscallnum));
4487 }
4488 else
4489 {
4490 printf_filtered ("Sleeping in system call '%s'.\n",
4491 syscallname (syscallnum));
4492 }
4493 }
4494#endif
4495
234a732d
GN		 4496#ifndef UNIXWARE
4497 if (ioctl (pip -> ctl_fd, PIOCGENTRY, &pip -> entryset) < 0)
cc221e76
FF		 4498 {
4499 print_sys_errmsg (pip -> pathname, errno);
4500 error ("PIOCGENTRY failed");
4501 }
4502
234a732d 4503 if (ioctl (pip -> ctl_fd, PIOCGEXIT, &pip -> exitset) < 0)
cc221e76
FF		 4504 {
4505 print_sys_errmsg (pip -> pathname, errno);
4506 error ("PIOCGEXIT failed");
4507 }
234a732d 4508#endif
cc221e76
FF		 4509
4510 printf_filtered ("System call tracing information:\n\n");
4511
4512 printf_filtered ("\t%-12s %-8s %-8s\n",
4513 "System call",
4514 "Entry",
4515 "Exit");
4516 for (syscallnum = 0; syscallnum < MAX_SYSCALLS; syscallnum++)
4517 {
4518 QUIT;
4519 if (syscall_table[syscallnum] != NULL)
8fc2b417
SG		 4520 printf_filtered ("\t%-12s ", syscall_table[syscallnum]);
4521 else
4522 printf_filtered ("\t%-12d ", syscallnum);
4523
234a732d
GN		 4524#ifdef UNIXWARE
4525 printf_filtered ("%-8s ",
4526 prismember (&pip->prstatus.pr_sysentry, syscallnum)
4527 ? "on" : "off");
4528 printf_filtered ("%-8s ",
4529 prismember (&pip->prstatus.pr_sysexit, syscallnum)
4530 ? "on" : "off");
4531#else
8fc2b417
SG		 4532 printf_filtered ("%-8s ",
4533 prismember (&pip -> entryset, syscallnum)
4534 ? "on" : "off");
4535 printf_filtered ("%-8s ",
4536 prismember (&pip -> exitset, syscallnum)
4537 ? "on" : "off");
234a732d 4538#endif
8fc2b417
SG		 4539 printf_filtered ("\n");
4540 }
cc221e76
FF		 4541 printf_filtered ("\n");
4542 }
4543}
4544
4545static char *
4546signalname (signo)
4547 int signo;
4548{
26a859ec 4549 const char *name;
4ace50a5
FF		 4550 static char locbuf[32];
4551
4552 name = strsigno (signo);
4553 if (name == NULL)
4554 {
4555 sprintf (locbuf, "Signal %d", signo);
4556 }
4557 else
4558 {
4559 sprintf (locbuf, "%s (%d)", name, signo);
4560 }
4561 return (locbuf);
4562}
4563
4564static char *
4565errnoname (errnum)
4566 int errnum;
4567{
26a859ec 4568 const char *name;
cc221e76
FF		 4569 static char locbuf[32];
4570
4ace50a5
FF		 4571 name = strerrno (errnum);
4572 if (name == NULL)
cc221e76 4573 {
4ace50a5 4574 sprintf (locbuf, "Errno %d", errnum);
cc221e76
FF		 4575 }
4576 else
4577 {
4ace50a5 4578 sprintf (locbuf, "%s (%d)", name, errnum);
cc221e76
FF		 4579 }
4580 return (locbuf);
4581}
4582
4583static void
4584info_proc_signals (pip, summary)
4585 struct procinfo *pip;
4586 int summary;
4587{
4588 int signo;
4589
4590 if (!summary)
4591 {
234a732d
GN		 4592#ifndef PROCFS_USE_READ_WRITE
4593 if (ioctl (pip -> ctl_fd, PIOCGTRACE, &pip -> trace) < 0)
cc221e76
FF		 4594 {
4595 print_sys_errmsg (pip -> pathname, errno);
4596 error ("PIOCGTRACE failed");
4597 }
234a732d 4598#endif
cc221e76
FF		 4599
4600 printf_filtered ("Disposition of signals:\n\n");
4601 printf_filtered ("\t%-15s %-8s %-8s %-8s %s\n\n",
4602 "Signal", "Trace", "Hold", "Pending", "Description");
4603 for (signo = 0; signo < NSIG; signo++)
4604 {
4605 QUIT;
4606 printf_filtered ("\t%-15s ", signalname (signo));
234a732d
GN		 4607#ifdef UNIXWARE
4608 printf_filtered ("%-8s ",
4609 prismember (&pip -> prstatus.pr_sigtrace, signo)
4610 ? "on" : "off");
4611 printf_filtered ("%-8s ",
4612 prismember (&pip -> prstatus.pr_lwp.pr_context.uc_sigmask, signo)
4613 ? "on" : "off");
4614#else
cc221e76
FF		 4615 printf_filtered ("%-8s ",
4616 prismember (&pip -> trace, signo)
4617 ? "on" : "off");
4618 printf_filtered ("%-8s ",
4619 prismember (&pip -> prstatus.pr_sighold, signo)
4620 ? "on" : "off");
234a732d 4621#endif
2592eef8 4622
234a732d
GN		 4623#ifdef UNIXWARE
4624 if (prismember (&pip->prstatus.pr_sigpend, signo) ||
4625 prismember (&pip->prstatus.pr_lwp.pr_lwppend, signo))
4626 printf_filtered("%-8s ", "yes");
4627 else
4628 printf_filtered("%-8s ", "no");
4629#else /* UNIXWARE */
2592eef8
PS		 4630#ifdef PROCFS_SIGPEND_OFFSET
4631 /* Alpha OSF/1 numbers the pending signals from 1. */
4632 printf_filtered ("%-8s ",
4633 (signo ? prismember (&pip -> prstatus.pr_sigpend,
4634 signo - 1)
4635 : 0)
4636 ? "yes" : "no");
4637#else
cc221e76
FF		 4638 printf_filtered ("%-8s ",
4639 prismember (&pip -> prstatus.pr_sigpend, signo)
4640 ? "yes" : "no");
2592eef8 4641#endif
234a732d 4642#endif /* UNIXWARE */
4ace50a5 4643 printf_filtered (" %s\n", safe_strsignal (signo));
cc221e76
FF		 4644 }
4645 printf_filtered ("\n");
4646 }
4647}
4648
4649static void
4650info_proc_faults (pip, summary)
4651 struct procinfo *pip;
4652 int summary;
4653{
4654 struct trans *transp;
4655
4656 if (!summary)
4657 {
234a732d
GN		 4658#ifndef UNIXWARE
4659 if (ioctl (pip -> ctl_fd, PIOCGFAULT, &pip->fltset.fltset) < 0)
cc221e76
FF		 4660 {
4661 print_sys_errmsg (pip -> pathname, errno);
4662 error ("PIOCGFAULT failed");
4663 }
234a732d 4664#endif
cc221e76
FF		 4665
4666 printf_filtered ("Current traced hardware fault set:\n\n");
4667 printf_filtered ("\t%-12s %-8s\n", "Fault", "Trace");
4668
4669 for (transp = faults_table; transp -> name != NULL; transp++)
4670 {
4671 QUIT;
4672 printf_filtered ("\t%-12s ", transp -> name);
234a732d
GN		 4673#ifdef UNIXWARE
4674 printf_filtered ("%-8s", prismember (&pip->prstatus.pr_flttrace, transp -> value)
4675 ? "on" : "off");
4676#else
4677 printf_filtered ("%-8s", prismember (&pip->fltset.fltset, transp -> value)
cc221e76 4678 ? "on" : "off");
234a732d 4679#endif
cc221e76
FF		 4680 printf_filtered ("\n");
4681 }
4682 printf_filtered ("\n");
4683 }
4684}
4685
4686static void
4687info_proc_mappings (pip, summary)
1ab3bf1b 4688 struct procinfo *pip;
cc221e76 4689 int summary;
a39ad5ce
FF		 4690{
4691 int nmap;
4692 struct prmap *prmaps;
4693 struct prmap *prmap;
234a732d 4694 struct stat sbuf;
a39ad5ce 4695
cc221e76 4696 if (!summary)
a39ad5ce 4697 {
cc221e76 4698 printf_filtered ("Mapped address spaces:\n\n");
2592eef8
PS		 4699#ifdef BFD_HOST_64_BIT
4700 printf_filtered (" %18s %18s %10s %10s %7s\n",
4701#else
5c1c5e67 4702 printf_filtered ("\t%10s %10s %10s %10s %7s\n",
2592eef8 4703#endif
cc221e76
FF		 4704 "Start Addr",
4705 " End Addr",
4706 " Size",
4707 " Offset",
4708 "Flags");
234a732d
GN		 4709#ifdef PROCFS_USE_READ_WRITE
4710 if (fstat (pip->map_fd, &sbuf) == 0)
4711 {
4712 nmap = sbuf.st_size / sizeof (prmap_t);
4713 prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps));
4714 if ((lseek (pip->map_fd, 0, SEEK_SET) == 0) &&
4715 (read (pip->map_fd, (char *) prmaps,
4716 nmap * sizeof (*prmaps)) == (nmap * sizeof (*prmaps))))
4717 {
4718 int i = 0;
4719 for (prmap = prmaps; i < nmap; ++prmap, ++i)
4720#else
4721 if (ioctl (pip -> ctl_fd, PIOCNMAP, &nmap) == 0)
a39ad5ce 4722 {
cc221e76 4723 prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps));
234a732d 4724 if (ioctl (pip -> ctl_fd, PIOCMAP, prmaps) == 0)
a39ad5ce 4725 {
cc221e76 4726 for (prmap = prmaps; prmap -> pr_size; ++prmap)
234a732d 4727#endif /* PROCFS_USE_READ_WRITE */
cc221e76 4728 {
2592eef8
PS		 4729#ifdef BFD_HOST_64_BIT
4730 printf_filtered (" %#18lx %#18lx %#10x %#10x %7s\n",
4731#else
4732 printf_filtered ("\t%#10lx %#10lx %#10x %#10x %7s\n",
4733#endif
4734 (unsigned long)prmap -> pr_vaddr,
4735 (unsigned long)prmap -> pr_vaddr
4736 + prmap -> pr_size - 1,
cc221e76
FF		 4737 prmap -> pr_size,
4738 prmap -> pr_off,
4739 mappingflags (prmap -> pr_mflags));
4740 }
a39ad5ce
FF		 4741 }
4742 }
cc221e76 4743 printf_filtered ("\n");
a39ad5ce 4744 }
a39ad5ce
FF		 4745}
4746
4747/*
4748
4749LOCAL FUNCTION
4750
cc221e76 4751 info_proc -- implement the "info proc" command
a39ad5ce
FF		 4752
4753SYNOPSIS
4754
cc221e76 4755 void info_proc (char *args, int from_tty)
a39ad5ce
FF		 4756
4757DESCRIPTION
4758
4759 Implement gdb's "info proc" command by using the /proc interface
4760 to print status information about any currently running process.
4761
4762 Examples of the use of "info proc" are:
4763
cc221e76
FF		 4764 info proc (prints summary info for current inferior)
4765 info proc 123 (prints summary info for process with pid 123)
4766 info proc mappings (prints address mappings)
4767 info proc times (prints process/children times)
4768 info proc id (prints pid, ppid, gid, sid, etc)
3fbdd536 4769 FIXME: i proc id not implemented.
cc221e76 4770 info proc status (prints general process state info)
3fbdd536 4771 FIXME: i proc status not implemented.
cc221e76
FF		 4772 info proc signals (prints info about signal handling)
4773 info proc all (prints all info)
a39ad5ce
FF		 4774
4775 */
4776
4777static void
cc221e76 4778info_proc (args, from_tty)
1ab3bf1b
JG		 4779 char *args;
4780 int from_tty;
a39ad5ce 4781{
3780c337 4782 int pid;
a39ad5ce
FF		 4783 struct procinfo *pip;
4784 struct cleanup *old_chain;
cc221e76
FF		 4785 char **argv;
4786 int argsize;
4787 int summary = 1;
4788 int flags = 0;
4789 int syscalls = 0;
4790 int signals = 0;
4791 int faults = 0;
4792 int mappings = 0;
4793 int times = 0;
4794 int id = 0;
4795 int status = 0;
4796 int all = 0;
8fc2b417 4797 int nlwp;
47ef0da5 4798 int *lwps;
a39ad5ce
FF		 4799
4800 old_chain = make_cleanup (null_cleanup, 0);
4801
de43d7d0
SG		 4802 /* Default to using the current inferior if no pid specified. Note
4803 that inferior_pid may be 0, hence we set okerr. */
a39ad5ce 4804
3780c337
MS		 4805 pid = inferior_pid & 0x7fffffff; /* strip off sol-thread bit */
4806 if (!(pip = find_procinfo (pid, 1))) /* inferior_pid no good? */
4807 pip = procinfo_list; /* take first available */
4808 pid = pid & 0xffff; /* extract "real" pid */
a39ad5ce 4809
a39ad5ce 4810 if (args != NULL)
35f5886e 4811 {
cc221e76 4812 if ((argv = buildargv (args)) == NULL)
a39ad5ce 4813 {
cc221e76
FF		 4814 nomem (0);
4815 }
4816 make_cleanup (freeargv, (char *) argv);
4817
4818 while (*argv != NULL)
4819 {
4820 argsize = strlen (*argv);
4821 if (argsize >= 1 && strncmp (*argv, "all", argsize) == 0)
4822 {
4823 summary = 0;
4824 all = 1;
4825 }
4826 else if (argsize >= 2 && strncmp (*argv, "faults", argsize) == 0)
4827 {
4828 summary = 0;
4829 faults = 1;
4830 }
4831 else if (argsize >= 2 && strncmp (*argv, "flags", argsize) == 0)
4832 {
4833 summary = 0;
4834 flags = 1;
4835 }
4836 else if (argsize >= 1 && strncmp (*argv, "id", argsize) == 0)
4837 {
4838 summary = 0;
4839 id = 1;
4840 }
4841 else if (argsize >= 1 && strncmp (*argv, "mappings", argsize) == 0)
4842 {
4843 summary = 0;
4844 mappings = 1;
4845 }
4846 else if (argsize >= 2 && strncmp (*argv, "signals", argsize) == 0)
4847 {
4848 summary = 0;
4849 signals = 1;
4850 }
4851 else if (argsize >= 2 && strncmp (*argv, "status", argsize) == 0)
4852 {
4853 summary = 0;
4854 status = 1;
4855 }
4856 else if (argsize >= 2 && strncmp (*argv, "syscalls", argsize) == 0)
4857 {
4858 summary = 0;
4859 syscalls = 1;
4860 }
4861 else if (argsize >= 1 && strncmp (*argv, "times", argsize) == 0)
a39ad5ce 4862 {
cc221e76
FF		 4863 summary = 0;
4864 times = 1;
a39ad5ce 4865 }
de43d7d0 4866 else if ((pid = atoi (*argv)) > 0)
a39ad5ce 4867 {
de43d7d0
SG		 4868 pip = (struct procinfo *) xmalloc (sizeof (struct procinfo));
4869 memset (pip, 0, sizeof (*pip));
4870
4871 pip->pid = pid;
234a732d 4872 if (!open_proc_file (pid, pip, O_RDONLY, 0))
a39ad5ce
FF		 4873 {
4874 perror_with_name (pip -> pathname);
4875 /* NOTREACHED */
4876 }
8fc2b417 4877 pid = pip->pid;
a39ad5ce
FF		 4878 make_cleanup (close_proc_file, pip);
4879 }
cc221e76
FF		 4880 else if (**argv != '\000')
4881 {
4882 error ("Unrecognized or ambiguous keyword `%s'.", *argv);
4883 }
4884 argv++;
a39ad5ce 4885 }
35f5886e 4886 }
a39ad5ce
FF		 4887
4888 /* If we don't have a valid open process at this point, then we have no
4889 inferior or didn't specify a specific pid. */
4890
de43d7d0 4891 if (!pip)
35f5886e 4892 {
6fe90fc8
JK		 4893 error ("\
4894No process. Start debugging a program or specify an explicit process ID.");
35f5886e 4895 }
234a732d
GN		 4896
4897 if (!procfs_read_status (pip))
35f5886e 4898 {
a39ad5ce 4899 print_sys_errmsg (pip -> pathname, errno);
234a732d 4900 error ("procfs_read_status failed");
35f5886e 4901 }
a39ad5ce 4902
234a732d 4903#ifndef PROCFS_USE_READ_WRITE
8fc2b417
SG		 4904#ifdef PIOCLWPIDS
4905 nlwp = pip->prstatus.pr_nlwp;
3780c337 4906 lwps = alloca ((2 * nlwp + 2) * sizeof (*lwps));
cc221e76 4907
234a732d 4908 if (ioctl (pip->ctl_fd, PIOCLWPIDS, lwps))
cc221e76 4909 {
8fc2b417 4910 print_sys_errmsg (pip -> pathname, errno);
3780c337 4911 error ("PIOCLWPIDS failed");
cc221e76 4912 }
8fc2b417
SG		 4913#else /* PIOCLWPIDS */
4914 nlwp = 1;
47ef0da5 4915 lwps = alloca ((2 * nlwp + 2) * sizeof *lwps);
8fc2b417
SG		 4916 lwps[0] = 0;
4917#endif /* PIOCLWPIDS */
4918
4919 for (; nlwp > 0; nlwp--, lwps++)
cc221e76 4920 {
8fc2b417
SG		 4921 pip = find_procinfo ((*lwps << 16) | pid, 1);
4922
4923 if (!pip)
4924 {
4925 pip = (struct procinfo *) xmalloc (sizeof (struct procinfo));
4926 memset (pip, 0, sizeof (*pip));
234a732d 4927 if (!open_proc_file ((*lwps << 16) | pid, pip, O_RDONLY, 0))
8fc2b417
SG		 4928 continue;
4929
4930 make_cleanup (close_proc_file, pip);
4931
234a732d 4932 if (!procfs_read_status (pip))
8fc2b417
SG		 4933 {
4934 print_sys_errmsg (pip -> pathname, errno);
234a732d 4935 error ("procfs_read_status failed");
8fc2b417
SG		 4936 }
4937 }
4938
234a732d
GN		 4939#endif /* PROCFS_USE_READ_WRITE */
4940
8fc2b417
SG		 4941 /* Print verbose information of the requested type(s), or just a summary
4942 of the information for all types. */
4943
4944 printf_filtered ("\nInformation for %s.%d:\n\n", pip -> pathname, *lwps);
4945 if (summary || all || flags)
4946 {
4947 info_proc_flags (pip, summary);
4948 }
4949 if (summary || all)
4950 {
4951 info_proc_stop (pip, summary);
1e50f1b4
JM		 4952#ifdef UNIXWARE
4953 supply_gregset (&pip->prstatus.pr_lwp.pr_context.uc_mcontext.gregs);
4954#else
3780c337 4955 supply_gregset (&pip->prstatus.pr_reg);
1e50f1b4 4956#endif
3780c337
MS		 4957 printf_filtered ("PC: ");
4958 print_address (read_pc (), gdb_stdout);
4959 printf_filtered ("\n");
8fc2b417
SG		 4960 }
4961 if (summary || all || signals || faults)
4962 {
4963 info_proc_siginfo (pip, summary);
4964 }
4965 if (summary || all || syscalls)
4966 {
4967 info_proc_syscalls (pip, summary);
4968 }
4969 if (summary || all || mappings)
4970 {
4971 info_proc_mappings (pip, summary);
4972 }
4973 if (summary || all || signals)
4974 {
4975 info_proc_signals (pip, summary);
4976 }
4977 if (summary || all || faults)
4978 {
4979 info_proc_faults (pip, summary);
4980 }
4981 printf_filtered ("\n");
4982
4983 /* All done, deal with closing any temporary process info structure,
4984 freeing temporary memory , etc. */
4985
4986 do_cleanups (old_chain);
234a732d 4987#ifndef PROCFS_USE_READ_WRITE
cc221e76 4988 }
234a732d 4989#endif
8fc2b417
SG		 4990}
4991
4992/*
4993
4994LOCAL FUNCTION
4995
4996 modify_inherit_on_fork_flag - Change the inherit-on-fork flag
4997
4998SYNOPSIS
4999
5000 void modify_inherit_on_fork_flag (fd, flag)
5001
5002DESCRIPTION
5003
5004 Call this routine to modify the inherit-on-fork flag. This routine is
5005 just a nice wrapper to hide the #ifdefs needed by various systems to
5006 control this flag.
5007
5008 */
5009
5010static void
5011modify_inherit_on_fork_flag (fd, flag)
5012 int fd;
5013 int flag;
5014{
234a732d 5015#if defined (PIOCSET) || defined (PCSET)
8fc2b417 5016 long pr_flags;
b607efe7 5017#endif
234a732d
GN		 5018 int retval = 0;
5019 struct proc_ctl pctl;
8fc2b417 5020
234a732d 5021#if defined (PIOCSET) || defined (PCSET) /* New method */
8fc2b417
SG		 5022 pr_flags = PR_FORK;
5023 if (flag)
234a732d
GN		 5024 {
5025#ifdef PROCFS_USE_READ_WRITE
5026 pctl.cmd = PCSET;
5027 pctl.data = PR_FORK;
5028 if (write (fd, (char *) &pctl, sizeof (struct proc_ctl)) < 0)
5029 retval = -1;
5030#else
5031 retval = ioctl (fd, PIOCSET, &pr_flags);
5032#endif
5033 }
8fc2b417 5034 else
234a732d
GN		 5035 {
5036#ifdef PROCFS_USE_READ_WRITE
5037 pctl.cmd = PCRESET;
5038 pctl.data = PR_FORK;
5039 if (write (fd, (char *) &pctl, sizeof (struct proc_ctl)) < 0)
5040 retval = -1;
5041#else
5042 retval = ioctl (fd, PIOCRESET, &pr_flags);
5043#endif
5044 }
8fc2b417
SG		 5045
5046#else
5047#ifdef PIOCSFORK /* Original method */
5048 if (flag)
234a732d
GN		 5049 {
5050 retval = ioctl (fd, PIOCSFORK, NULL);
5051 }
8fc2b417 5052 else
234a732d
GN		 5053 {
5054 retval = ioctl (fd, PIOCRFORK, NULL);
5055 }
8fc2b417
SG		 5056#else
5057 Neither PR_FORK nor PIOCSFORK exist!!!
5058#endif
5059#endif
5060
5061 if (!retval)
5062 return;
5063
5064 print_sys_errmsg ("modify_inherit_on_fork_flag", errno);
5065 error ("PIOCSFORK or PR_FORK modification failed");
5066}
5067
5068/*
5069
5070LOCAL FUNCTION
5071
5072 modify_run_on_last_close_flag - Change the run-on-last-close flag
5073
5074SYNOPSIS
5075
5076 void modify_run_on_last_close_flag (fd, flag)
5077
5078DESCRIPTION
5079
5080 Call this routine to modify the run-on-last-close flag. This routine
5081 is just a nice wrapper to hide the #ifdefs needed by various systems to
5082 control this flag.
5083
5084 */
5085
5086static void
5087modify_run_on_last_close_flag (fd, flag)
5088 int fd;
5089 int flag;
5090{
234a732d 5091#if defined (PIOCSET) || defined (PCSET)
8fc2b417 5092 long pr_flags;
b607efe7 5093#endif
234a732d
GN		 5094 int retval = 0;
5095 struct proc_ctl pctl;
8fc2b417 5096
234a732d 5097#if defined (PIOCSET) || defined (PCSET) /* New method */
8fc2b417
SG		 5098 pr_flags = PR_RLC;
5099 if (flag)
234a732d
GN		 5100 {
5101#ifdef PROCFS_USE_READ_WRITE
5102 pctl.cmd = PCSET;
5103 pctl.data = PR_RLC;
5104 if (write (fd, (char *) &pctl, sizeof (struct proc_ctl)) < 0)
5105 retval = -1;
5106#else
5107 retval = ioctl (fd, PIOCSET, &pr_flags);
5108#endif
5109 }
8fc2b417 5110 else
234a732d
GN		 5111 {
5112#ifdef PROCFS_USE_READ_WRITE
5113 pctl.cmd = PCRESET;
5114 pctl.data = PR_RLC;
5115 if (write (fd, (char *) &pctl, sizeof (struct proc_ctl)) < 0)
5116 retval = -1;
5117#else
5118 retval = ioctl (fd, PIOCRESET, &pr_flags);
5119#endif
5120 }
8fc2b417
SG		 5121
5122#else
5123#ifdef PIOCSRLC /* Original method */
5124 if (flag)
5125 retval = ioctl (fd, PIOCSRLC, NULL);
5126 else
5127 retval = ioctl (fd, PIOCRRLC, NULL);
5128#else
5129 Neither PR_RLC nor PIOCSRLC exist!!!
5130#endif
5131#endif
5132
5133 if (!retval)
5134 return;
5135
5136 print_sys_errmsg ("modify_run_on_last_close_flag", errno);
5137 error ("PIOCSRLC or PR_RLC modification failed");
5138}
5139
5140/*
5141
5142LOCAL FUNCTION
5143
5144 procfs_clear_syscall_trap -- Deletes the trap for the specified system call.
5145
5146SYNOPSIS
5147
5148 void procfs_clear_syscall_trap (struct procinfo *, int syscall_num, int errok)
5149
5150DESCRIPTION
5151
5152 This function function disables traps for the specified system call.
5153 errok is non-zero if errors should be ignored.
5154 */
5155
5156static void
5157procfs_clear_syscall_trap (pi, syscall_num, errok)
5158 struct procinfo *pi;
5159 int syscall_num;
5160 int errok;
5161{
5162 sysset_t sysset;
5163 int goterr, i;
1e50f1b4
JM		 5164
5165#ifndef UNIXWARE
234a732d 5166 goterr = ioctl (pi->ctl_fd, PIOCGENTRY, &sysset) < 0;
8fc2b417
SG		 5167
5168 if (goterr && !errok)
cc221e76 5169 {
8fc2b417
SG		 5170 print_sys_errmsg (pi->pathname, errno);
5171 error ("PIOCGENTRY failed");
cc221e76 5172 }
8fc2b417
SG		 5173
5174 if (!goterr)
cc221e76 5175 {
8fc2b417
SG		 5176 prdelset (&sysset, syscall_num);
5177
234a732d 5178 if ((ioctl (pi->ctl_fd, PIOCSENTRY, &sysset) < 0) && !errok)
8fc2b417
SG		 5179 {
5180 print_sys_errmsg (pi->pathname, errno);
5181 error ("PIOCSENTRY failed");
5182 }
cc221e76 5183 }
8fc2b417 5184
234a732d 5185 goterr = ioctl (pi->ctl_fd, PIOCGEXIT, &sysset) < 0;
8fc2b417
SG		 5186
5187 if (goterr && !errok)
cc221e76 5188 {
8fc2b417
SG		 5189 procfs_clear_syscall_trap (pi, syscall_num, 1);
5190 print_sys_errmsg (pi->pathname, errno);
5191 error ("PIOCGEXIT failed");
cc221e76 5192 }
8fc2b417
SG		 5193
5194 if (!goterr)
cc221e76 5195 {
8fc2b417
SG		 5196 praddset (&sysset, syscall_num);
5197
234a732d 5198 if ((ioctl (pi->ctl_fd, PIOCSEXIT, &sysset) < 0) && !errok)
8fc2b417
SG		 5199 {
5200 procfs_clear_syscall_trap (pi, syscall_num, 1);
5201 print_sys_errmsg (pi->pathname, errno);
5202 error ("PIOCSEXIT failed");
5203 }
cc221e76 5204 }
1e50f1b4 5205#endif
8fc2b417
SG		 5206
5207 if (!pi->syscall_handlers)
cc221e76 5208 {
8fc2b417
SG		 5209 if (!errok)
5210 error ("procfs_clear_syscall_trap: syscall_handlers is empty");
5211 return;
cc221e76 5212 }
a39ad5ce 5213
8fc2b417 5214 /* Remove handler func from the handler list */
a39ad5ce 5215
8fc2b417
SG		 5216 for (i = 0; i < pi->num_syscall_handlers; i++)
5217 if (pi->syscall_handlers[i].syscall_num == syscall_num)
5218 {
5219 if (i + 1 != pi->num_syscall_handlers)
5220 { /* Not the last entry.
5221 Move subsequent entries fwd. */
5222 memcpy (&pi->syscall_handlers[i], &pi->syscall_handlers[i + 1],
5223 (pi->num_syscall_handlers - i - 1)
5224 * sizeof (struct procfs_syscall_handler));
5225 }
5226
5227 pi->syscall_handlers = xrealloc (pi->syscall_handlers,
5228 (pi->num_syscall_handlers - 1)
5229 * sizeof (struct procfs_syscall_handler));
5230 pi->num_syscall_handlers--;
5231 return;
5232 }
5233
5234 if (!errok)
5235 error ("procfs_clear_syscall_trap: Couldn't find handler for sys call %d",
5236 syscall_num);
a39ad5ce
FF		 5237}
5238
de43d7d0
SG		 5239/*
5240
5241LOCAL FUNCTION
5242
8fc2b417
SG		 5243 procfs_set_syscall_trap -- arrange for a function to be called when the
5244 child executes the specified system call.
de43d7d0
SG		 5245
5246SYNOPSIS
5247
8fc2b417
SG		 5248 void procfs_set_syscall_trap (struct procinfo *, int syscall_num, int flags,
5249 syscall_func_t *function)
de43d7d0
SG		 5250
5251DESCRIPTION
5252
8fc2b417
SG		 5253 This function sets up an entry and/or exit trap for the specified system
5254 call. When the child executes the specified system call, your function
5255 will be called with the call #, a flag that indicates entry or exit, and
5256 pointers to rtnval and statval (which are used by procfs_wait). The
5257 function should return non-zero if something interesting happened, zero
5258 otherwise.
de43d7d0
SG		 5259 */
5260
5261static void
8fc2b417 5262procfs_set_syscall_trap (pi, syscall_num, flags, func)
de43d7d0 5263 struct procinfo *pi;
8fc2b417
SG		 5264 int syscall_num;
5265 int flags;
5266 syscall_func_t *func;
de43d7d0 5267{
8fc2b417 5268 sysset_t sysset;
3780c337 5269
1e50f1b4 5270#ifndef UNIXWARE
8fc2b417 5271 if (flags & PROCFS_SYSCALL_ENTRY)
de43d7d0 5272 {
234a732d 5273 if (ioctl (pi->ctl_fd, PIOCGENTRY, &sysset) < 0)
8fc2b417
SG		 5274 {
5275 print_sys_errmsg (pi->pathname, errno);
5276 error ("PIOCGENTRY failed");
5277 }
5278
5279 praddset (&sysset, syscall_num);
5280
234a732d 5281 if (ioctl (pi->ctl_fd, PIOCSENTRY, &sysset) < 0)
8fc2b417
SG		 5282 {
5283 print_sys_errmsg (pi->pathname, errno);
5284 error ("PIOCSENTRY failed");
5285 }
de43d7d0
SG		 5286 }
5287
8fc2b417
SG		 5288 if (flags & PROCFS_SYSCALL_EXIT)
5289 {
234a732d 5290 if (ioctl (pi->ctl_fd, PIOCGEXIT, &sysset) < 0)
8fc2b417
SG		 5291 {
5292 procfs_clear_syscall_trap (pi, syscall_num, 1);
5293 print_sys_errmsg (pi->pathname, errno);
5294 error ("PIOCGEXIT failed");
5295 }
de43d7d0 5296
8fc2b417 5297 praddset (&sysset, syscall_num);
eca4a350 5298
234a732d 5299 if (ioctl (pi->ctl_fd, PIOCSEXIT, &sysset) < 0)
8fc2b417
SG		 5300 {
5301 procfs_clear_syscall_trap (pi, syscall_num, 1);
5302 print_sys_errmsg (pi->pathname, errno);
5303 error ("PIOCSEXIT failed");
5304 }
5305 }
1e50f1b4 5306#endif
eca4a350 5307
8fc2b417 5308 if (!pi->syscall_handlers)
de43d7d0 5309 {
8fc2b417
SG		 5310 pi->syscall_handlers = xmalloc (sizeof (struct procfs_syscall_handler));
5311 pi->syscall_handlers[0].syscall_num = syscall_num;
5312 pi->syscall_handlers[0].func = func;
5313 pi->num_syscall_handlers = 1;
de43d7d0 5314 }
8fc2b417
SG		 5315 else
5316 {
5317 int i;
de43d7d0 5318
8fc2b417
SG		 5319 for (i = 0; i < pi->num_syscall_handlers; i++)
5320 if (pi->syscall_handlers[i].syscall_num == syscall_num)
5321 {
5322 pi->syscall_handlers[i].func = func;
5323 return;
5324 }
de43d7d0 5325
8fc2b417
SG		 5326 pi->syscall_handlers = xrealloc (pi->syscall_handlers, (i + 1)
5327 * sizeof (struct procfs_syscall_handler));
5328 pi->syscall_handlers[i].syscall_num = syscall_num;
5329 pi->syscall_handlers[i].func = func;
5330 pi->num_syscall_handlers++;
5331 }
de43d7d0 5332}
8fc2b417
SG		 5333
5334#ifdef SYS_lwp_create
5335
5336/*
5337
5338LOCAL FUNCTION
5339
5340 procfs_lwp_creation_handler - handle exit from the _lwp_create syscall
5341
5342SYNOPSIS
5343
5344 int procfs_lwp_creation_handler (pi, syscall_num, why, rtnvalp, statvalp)
5345
5346DESCRIPTION
5347
5348 This routine is called both when an inferior process and it's new lwp
5349 are about to finish a _lwp_create() system call. This is the system
5350 call that Solaris uses to create a lightweight process. When the
5351 target process gets this event, we can look at sysarg[2] to find the
5352 new childs lwp ID, and create a procinfo struct from that. After that,
5353 we pretend that we got a SIGTRAP, and return non-zero to tell
5354 procfs_wait to wake up. Subsequently, wait_for_inferior gets woken up,
5355 sees the new process and continues it.
5356
5357 When we see the child exiting from lwp_create, we just contine it,
5358 since everything was handled when the parent trapped.
5359
5360NOTES
5361 In effect, we are only paying attention to the parent's completion of
5362 the lwp_create syscall. If we only paid attention to the child
5363 instead, then we wouldn't detect the creation of a suspended thread.
5364 */
5365
5366static int
5367procfs_lwp_creation_handler (pi, syscall_num, why, rtnvalp, statvalp)
5368 struct procinfo *pi;
5369 int syscall_num;
5370 int why;
5371 int *rtnvalp;
5372 int *statvalp;
5373{
5374 int lwp_id;
5375 struct procinfo *childpi;
1e50f1b4 5376 struct proc_ctl pctl;
8fc2b417
SG		 5377
5378 /* We've just detected the completion of an lwp_create system call. Now we
5379 need to setup a procinfo struct for this thread, and notify the thread
5380 system of the new arrival. */
5381
5382 /* If lwp_create failed, then nothing interesting happened. Continue the
5383 process and go back to sleep. */
5384
1e50f1b4
JM		 5385#ifdef UNIXWARE
5386 /* Joel ... can you check this logic out please? JKJ */
5387 if (pi->prstatus.pr_lwp.pr_context.uc_mcontext.gregs[R_EFL] & 1)
5388 { /* _lwp_create failed */
5389 pctl.cmd = PCRUN;
5390 pctl.data = PRCFAULT;
5391
5392 if (write (pi->ctl_fd, (char *) &pctl, sizeof (struct proc_ctl)) < 0)
5393 perror_with_name (pi->pathname);
5394
5395 return 0;
5396 }
5397#else /* UNIXWARE */
f0fce3b8 5398 if (PROCFS_GET_CARRY (pi->prstatus.pr_reg))
8fc2b417
SG		 5399 { /* _lwp_create failed */
5400 pi->prrun.pr_flags &= PRSTEP;
5401 pi->prrun.pr_flags |= PRCFAULT;
5402
234a732d 5403 if (ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0)
8fc2b417
SG		 5404 perror_with_name (pi->pathname);
5405
5406 return 0;
5407 }
1e50f1b4 5408#endif
8fc2b417
SG		 5409
5410 /* At this point, the new thread is stopped at it's first instruction, and
5411 the parent is stopped at the exit from lwp_create. */
5412
5413 if (pi->new_child) /* Child? */
5414 { /* Yes, just continue it */
1e50f1b4
JM		 5415#ifdef UNIXWARE
5416 pctl.cmd = PCRUN;
5417 pctl.data = PRCFAULT;
5418
5419 if (write(pi->ctl_fd, (char *)&pctl, sizeof (struct proc_ctl)) < 0)
5420#else /* !UNIXWARE */
8fc2b417
SG		 5421 pi->prrun.pr_flags &= PRSTEP;
5422 pi->prrun.pr_flags |= PRCFAULT;
5423
5424 if ((pi->prstatus.pr_flags & PR_ISTOP)
234a732d 5425 && ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0)
1e50f1b4 5426#endif /* !UNIXWARE */
8fc2b417
SG		 5427 perror_with_name (pi->pathname);
5428
5429 pi->new_child = 0; /* No longer new */
5430
5431 return 0;
5432 }
5433
5434 /* We're the proud parent of a new thread. Setup an exit trap for lwp_create
5435 in the child and continue the parent. */
3780c337 5436
8fc2b417 5437 /* Third arg is pointer to new thread id. */
1e50f1b4
JM		 5438#ifdef UNIXWARE
5439 lwp_id = read_memory_integer (pi->prstatus.pr_lwp.pr_sysarg[2], sizeof (int));
5440#else
8fc2b417 5441 lwp_id = read_memory_integer (pi->prstatus.pr_sysarg[2], sizeof (int));
1e50f1b4 5442#endif
8fc2b417
SG		 5443
5444 lwp_id = (lwp_id << 16) | PIDGET (pi->pid);
5445
5446 childpi = create_procinfo (lwp_id);
5447
5448 /* The new process has actually inherited the lwp_create syscall trap from
3780c337 5449 it's parent, but we still have to call this to register handlers for
8fc2b417
SG		 5450 that child. */
5451
3780c337
MS		 5452 procfs_set_inferior_syscall_traps (childpi);
5453 add_thread (lwp_id);
5454 printf_filtered ("[New %s]\n", target_pid_to_str (lwp_id));
8fc2b417 5455
3780c337 5456 /* Continue the parent */
1e50f1b4
JM		 5457#ifdef UNIXWARE
5458 pctl.cmd = PCRUN;
5459 pctl.data = PRCFAULT;
8fc2b417 5460
1e50f1b4
JM		 5461 if (write(pi->ctl_fd, (char *)&pctl, sizeof (struct proc_ctl)) < 0)
5462#else
3780c337
MS		 5463 pi->prrun.pr_flags &= PRSTEP;
5464 pi->prrun.pr_flags |= PRCFAULT;
5465 if (ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0)
1e50f1b4 5466#endif
3780c337 5467 perror_with_name (pi->pathname);
8fc2b417 5468
3780c337
MS		 5469 /* The new child may have been created in one of two states:
5470 SUSPENDED or RUNNABLE. If runnable, we will simply signal it to run.
5471 If suspended, we flag it to be continued later, when it has an event. */
5472
1e50f1b4
JM		 5473#ifdef UNIXWARE
5474 if (childpi->prstatus.pr_lwp.pr_why == PR_SUSPENDED)
5475#else
3780c337 5476 if (childpi->prstatus.pr_why == PR_SUSPENDED)
1e50f1b4 5477#endif
3780c337
MS		 5478 childpi->new_child = 1; /* Flag this as an unseen child process */
5479 else
5480 {
5481 /* Continue the child */
1e50f1b4
JM		 5482#ifdef UNIXWARE
5483 pctl.cmd = PCRUN;
5484 pctl.data = PRCFAULT;
5485
5486 if (write(pi->ctl_fd, (char *)&pctl, sizeof (struct proc_ctl)) < 0)
5487#else
3780c337
MS		 5488 childpi->prrun.pr_flags &= PRSTEP;
5489 childpi->prrun.pr_flags |= PRCFAULT;
5490
5491 if (ioctl (childpi->ctl_fd, PIOCRUN, &childpi->prrun) != 0)
1e50f1b4 5492#endif
3780c337
MS		 5493 perror_with_name (childpi->pathname);
5494 }
5495 return 0;
8fc2b417
SG		 5496}
5497#endif /* SYS_lwp_create */
de43d7d0 5498
3fbdd536
JG		 5499/* Fork an inferior process, and start debugging it with /proc. */
5500
5501static void
5502procfs_create_inferior (exec_file, allargs, env)
5503 char *exec_file;
5504 char *allargs;
5505 char **env;
5506{
08f74b92
JK		 5507 char *shell_file = getenv ("SHELL");
5508 char *tryname;
5509 if (shell_file != NULL && strchr (shell_file, '/') == NULL)
5510 {
5511
5512 /* We will be looking down the PATH to find shell_file. If we
5513 just do this the normal way (via execlp, which operates by
5514 attempting an exec for each element of the PATH until it
5515 finds one which succeeds), then there will be an exec for
5516 each failed attempt, each of which will cause a PR_SYSEXIT
5517 stop, and we won't know how to distinguish the PR_SYSEXIT's
5518 for these failed execs with the ones for successful execs
5519 (whether the exec has succeeded is stored at that time in the
5520 carry bit or some such architecture-specific and
5521 non-ABI-specified place).
5522
5523 So I can't think of anything better than to search the PATH
5524 now. This has several disadvantages: (1) There is a race
5525 condition; if we find a file now and it is deleted before we
5526 exec it, we lose, even if the deletion leaves a valid file
5527 further down in the PATH, (2) there is no way to know exactly
5528 what an executable (in the sense of "capable of being
5529 exec'd") file is. Using access() loses because it may lose
5530 if the caller is the superuser; failing to use it loses if
5531 there are ACLs or some such. */
5532
5533 char *p;
5534 char *p1;
f93b941b
JK		 5535 /* FIXME-maybe: might want "set path" command so user can change what
5536 path is used from within GDB. */
08f74b92
JK		 5537 char *path = getenv ("PATH");
5538 int len;
5539 struct stat statbuf;
5540
5541 if (path == NULL)
5542 path = "/bin:/usr/bin";
5543
5544 tryname = alloca (strlen (path) + strlen (shell_file) + 2);
5545 for (p = path; p != NULL; p = p1 ? p1 + 1: NULL)
5546 {
5547 p1 = strchr (p, ':');
5548 if (p1 != NULL)
5549 len = p1 - p;
5550 else
5551 len = strlen (p);
5552 strncpy (tryname, p, len);
5553 tryname[len] = '\0';
5554 strcat (tryname, "/");
5555 strcat (tryname, shell_file);
5556 if (access (tryname, X_OK) < 0)
5557 continue;
5558 if (stat (tryname, &statbuf) < 0)
5559 continue;
5560 if (!S_ISREG (statbuf.st_mode))
5561 /* We certainly need to reject directories. I'm not quite
5562 as sure about FIFOs, sockets, etc., but I kind of doubt
5563 that people want to exec() these things. */
5564 continue;
5565 break;
5566 }
5567 if (p == NULL)
5568 /* Not found. This must be an error rather than merely passing
5569 the file to execlp(), because execlp() would try all the
5570 exec()s, causing GDB to get confused. */
5571 error ("Can't find shell %s in PATH", shell_file);
5572
5573 shell_file = tryname;
5574 }
5575
3fbdd536 5576 fork_inferior (exec_file, allargs, env,
08f74b92
JK		 5577 proc_set_exec_trap, procfs_init_inferior, shell_file);
5578
3fbdd536
JG		 5579 /* We are at the first instruction we care about. */
5580 /* Pedal to the metal... */
de43d7d0 5581
67ac9759 5582 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_0, 0);
3fbdd536
JG		 5583}
5584
5585/* Clean up after the inferior dies. */
5586
5587static void
5588procfs_mourn_inferior ()
5589{
fb63d460 5590 struct procinfo *pi;
cd4104e0 5591 struct procinfo *next_pi;
fb63d460 5592
cd4104e0
TL		 5593 for (pi = procinfo_list; pi; pi = next_pi)
5594 {
5595 next_pi = pi->next;
5596 unconditionally_kill_inferior (pi);
5597 }
fb63d460 5598
3fbdd536
JG		 5599 unpush_target (&procfs_ops);
5600 generic_mourn_inferior ();
5601}
5602
cd4104e0 5603
3fbdd536
JG		 5604/* Mark our target-struct as eligible for stray "run" and "attach" commands. */
5605static int
5606procfs_can_run ()
5607{
8fc2b417
SG		 5608 /* This variable is controlled by modules that sit atop procfs that may layer
5609 their own process structure atop that provided here. sol-thread.c does
5610 this because of the Solaris two-level thread model. */
5611
5612 return !procfs_suppress_run;
3fbdd536 5613}
f5a8f1a6 5614#ifdef TARGET_HAS_HARDWARE_WATCHPOINTS
1e50f1b4 5615#ifndef UNIXWARE
999dd04b
JL		 5616\f
5617/* Insert a watchpoint */
5618int
5619procfs_set_watchpoint(pid, addr, len, rw)
5620 int pid;
5621 CORE_ADDR addr;
5622 int len;
5623 int rw;
5624{
5625 struct procinfo *pi;
5626 prwatch_t wpt;
5627
5628 pi = find_procinfo (pid == -1 ? inferior_pid : pid, 0);
5629 wpt.pr_vaddr = (caddr_t)addr;
5630 wpt.pr_size = len;
5631 wpt.pr_wflags = ((rw & 1) ? MA_READ : 0) | ((rw & 2) ? MA_WRITE : 0);
234a732d 5632 if (ioctl (pi->ctl_fd, PIOCSWATCH, &wpt) < 0)
999dd04b
JL		 5633 {
5634 if (errno == E2BIG)
5635 return -1;
5636 /* Currently it sometimes happens that the same watchpoint gets
5637 deleted twice - don't die in this case (FIXME please) */
5638 if (errno == ESRCH && len == 0)
5639 return 0;
5640 print_sys_errmsg (pi->pathname, errno);
5641 error ("PIOCSWATCH failed");
5642 }
5643 return 0;
5644}
5645
5646int
5647procfs_stopped_by_watchpoint(pid)
5648 int pid;
5649{
5650 struct procinfo *pi;
5651 short what;
5652 short why;
5653
5654 pi = find_procinfo (pid == -1 ? inferior_pid : pid, 0);
5655 if (pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP))
5656 {
5657 why = pi->prstatus.pr_why;
5658 what = pi->prstatus.pr_what;
5659 if (why == PR_FAULTED
6bc194d2 5660#if defined (FLTWATCH) && defined (FLTKWATCH)
255181a9 5661 && (what == FLTWATCH || what == FLTKWATCH)
6bc194d2
JL		 5662#else
5663#ifdef FLTWATCH
5664 && (what == FLTWATCH)
5665#endif
5666#ifdef FLTKWATCH
5667 && (what == FLTKWATCH)
5668#endif
72b8ca51 5669#endif
6bc194d2 5670 )
999dd04b
JL		 5671 return what;
5672 }
5673 return 0;
5674}
1e50f1b4 5675#endif /* !UNIXWARE */
234a732d 5676#endif /* TARGET_HAS_HARDWARE_WATCHPOINTS */
999dd04b 5677
8fc2b417
SG		 5678/* Why is this necessary? Shouldn't dead threads just be removed from the
5679 thread database? */
5680
9b33e492 5681static int
8fc2b417
SG		 5682procfs_thread_alive (pid)
5683 int pid;
5684{
3780c337
MS		 5685 struct procinfo *pi, *next_pi;
5686
5687 for (pi = procinfo_list; pi; pi = next_pi)
5688 {
5689 next_pi = pi->next;
5690 if (pi -> pid == pid)
5691 if (procfs_read_status (pi)) /* alive */
5692 return 1;
5693 else /* defunct (exited) */
5694 {
5695 close_proc_file (pi);
5696 return 0;
5697 }
5698 }
5699 return 0;
5700}
5701
5702int
5703procfs_first_available ()
5704{
5705 struct procinfo *pi;
5706
5707 for (pi = procinfo_list; pi; pi = pi->next)
5708 {
5709 if (procfs_read_status (pi))
5710 return pi->pid;
5711 }
5712 return -1;
8fc2b417
SG		 5713}
5714
f0fce3b8
JM		 5715int
5716procfs_get_pid_fd (pid)
5717 int pid;
5718{
5719 struct procinfo *pi = find_procinfo (pid, 1);
5720
5721 if (pi == NULL)
5722 return -1;
5723
5724 return pi->ctl_fd;
5725}
5726
78b459a7
SG		 5727/* Send a SIGINT to the process group. This acts just like the user typed a
5728 ^C on the controlling terminal.
5729
5730 XXX - This may not be correct for all systems. Some may want to use
5731 killpg() instead of kill (-pgrp). */
5732
9b33e492 5733static void
2592eef8 5734procfs_stop ()
78b459a7
SG		 5735{
5736 extern pid_t inferior_process_group;
5737
5738 kill (-inferior_process_group, SIGINT);
5739}
9b33e492
SG		 5740\f
5741/* Convert a pid to printable form. */
78b459a7 5742
9b33e492
SG		 5743#ifdef TIDGET
5744char *
5745procfs_pid_to_str (pid)
5746 int pid;
5747{
5748 static char buf[100];
5749
5750 sprintf (buf, "Kernel thread %d", TIDGET (pid));
5751
5752 return buf;
5753}
5754#endif /* TIDGET */
3fbdd536
JG		 5755\f
5756struct target_ops procfs_ops = {
5757 "procfs", /* to_shortname */
5758 "Unix /proc child process", /* to_longname */
5759 "Unix /proc child process (started by the \"run\" command).", /* to_doc */
5760 procfs_open, /* to_open */
5761 0, /* to_close */
4ef1f467
DT		 5762 procfs_attach, /* to_attach */
5763 NULL, /* to_post_attach */
5764 procfs_attach, /* to_require_attach */
3fbdd536 5765 procfs_detach, /* to_detach */
4ef1f467
DT		 5766 procfs_detach, /* to_require_detach */
5767 procfs_resume, /* to_resume */
3fbdd536 5768 procfs_wait, /* to_wait */
4ef1f467 5769 NULL, /* to_post_wait */
3fbdd536
JG		 5770 procfs_fetch_registers, /* to_fetch_registers */
5771 procfs_store_registers, /* to_store_registers */
5772 procfs_prepare_to_store, /* to_prepare_to_store */
5773 procfs_xfer_memory, /* to_xfer_memory */
5774 procfs_files_info, /* to_files_info */
5775 memory_insert_breakpoint, /* to_insert_breakpoint */
5776 memory_remove_breakpoint, /* to_remove_breakpoint */
5777 terminal_init_inferior, /* to_terminal_init */
5778 terminal_inferior, /* to_terminal_inferior */
5779 terminal_ours_for_output, /* to_terminal_ours_for_output */
5780 terminal_ours, /* to_terminal_ours */
5781 child_terminal_info, /* to_terminal_info */
5782 procfs_kill_inferior, /* to_kill */
5783 0, /* to_load */
5784 0, /* to_lookup_symbol */
5785 procfs_create_inferior, /* to_create_inferior */
4ef1f467
DT		 5786 NULL, /* to_post_startup_inferior */
5787 NULL, /* to_acknowledge_created_inferior */
5788 NULL, /* to_clone_and_follow_inferior */
5789 NULL, /* to_post_follow_inferior_by_clone */
5790 NULL, /* to_insert_fork_catchpoint */
5791 NULL, /* to_remove_fork_catchpoint */
5792 NULL, /* to_insert_vfork_catchpoint */
5793 NULL, /* to_remove_vfork_catchpoint */
5794 NULL, /* to_has_forked */
5795 NULL, /* to_has_vforked */
5796 NULL, /* to_can_follow_vfork_prior_to_exec */
5797 NULL, /* to_post_follow_vfork */
5798 NULL, /* to_insert_exec_catchpoint */
5799 NULL, /* to_remove_exec_catchpoint */
5800 NULL, /* to_has_execd */
5801 NULL, /* to_reported_exec_events_per_exec_call */
5802 NULL, /* to_has_syscall_event */
5803 NULL, /* to_has_exited */
3fbdd536
JG		 5804 procfs_mourn_inferior, /* to_mourn_inferior */
5805 procfs_can_run, /* to_can_run */
3950a34e 5806 procfs_notice_signals, /* to_notice_signals */
8fc2b417 5807 procfs_thread_alive, /* to_thread_alive */
2592eef8 5808 procfs_stop, /* to_stop */
4ef1f467
DT		 5809 NULL, /* to_enable_exception_callback */
5810 NULL, /* to_get_current_exception_event */
5811 NULL, /* to_pid_to_exec_file */
5812 NULL, /* to_core_file_to_sym_file */
3fbdd536
JG		 5813 process_stratum, /* to_stratum */
5814 0, /* to_next */
5815 1, /* to_has_all_memory */
5816 1, /* to_has_memory */
5817 1, /* to_has_stack */
5818 1, /* to_has_registers */
5819 1, /* to_has_execution */
5820 0, /* sections */
5821 0, /* sections_end */
5822 OPS_MAGIC /* to_magic */
5823};
5824
3fbdd536
JG		 5825void
5826_initialize_procfs ()
5827{
2592eef8 5828#ifdef HAVE_OPTIONAL_PROC_FS
234a732d 5829 char procname[MAX_PROC_NAME_SIZE];
2592eef8
PS		 5830 int fd;
5831
5832 /* If we have an optional /proc filesystem (e.g. under OSF/1),
5833 don't add procfs support if we cannot access the running
5834 GDB via /proc. */
234a732d 5835 sprintf (procname, STATUS_PROC_NAME_FMT, getpid ());
2592eef8
PS		 5836 if ((fd = open (procname, O_RDONLY)) < 0)
5837 return;
5838 close (fd);
5839#endif
5840
3fbdd536
JG		 5841 add_target (&procfs_ops);
5842
3780c337 5843 add_info ("processes", info_proc,
cc221e76
FF		 5844"Show process status information using /proc entry.\n\
5845Specify process id or use current inferior by default.\n\
5846Specify keywords for detailed information; default is summary.\n\
5847Keywords are: `all', `faults', `flags', `id', `mappings', `signals',\n\
5848`status', `syscalls', and `times'.\n\
3fbdd536 5849Unambiguous abbreviations may be used.");
a39ad5ce 5850
cc221e76 5851 init_syscall_table ();
35f5886e 5852}
GDB Binutils - Deliverables
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