1 /* Machine independent support for SVR4 /proc (process file system) for GDB.
2 Copyright 1991, 1992-96, 1997 Free Software Foundation, Inc.
3 Written by Fred Fish at Cygnus Support. Changes for sysv4.2mp procfs
4 compatibility by Geoffrey Noer at Cygnus Solutions.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
25 For information on the details of using /proc consult section proc(4)
26 in the UNIX System V Release 4 System Administrator's Reference Manual.
28 The general register and floating point register sets are manipulated
29 separately. This file makes the assumption that if FP0_REGNUM is
30 defined, then support for the floating point register set is desired,
31 regardless of whether or not the actual target has floating point hardware.
38 #include <sys/types.h>
40 #include <sys/fault.h>
41 #include <sys/syscall.h>
42 #include <sys/procfs.h>
45 #include "gdb_string.h"
55 #include "gdbthread.h"
57 /* the name of the proc status struct depends on the implementation */
59 typedef pstatus_t gdb_prstatus_t;
61 typedef prstatus_t gdb_prstatus_t;
64 #define MAX_SYSCALLS 256 /* Maximum number of syscalls for table */
66 /* proc name formats may vary depending on the proc implementation */
67 #ifdef HAVE_MULTIPLE_PROC_FDS
68 # ifndef CTL_PROC_NAME_FMT
69 # define CTL_PROC_NAME_FMT "/proc/%d/ctl"
70 # define AS_PROC_NAME_FMT "/proc/%d/as"
71 # define MAP_PROC_NAME_FMT "/proc/%d/map"
72 # define STATUS_PROC_NAME_FMT "/proc/%d/status"
74 #else /* HAVE_MULTIPLE_PROC_FDS */
75 # ifndef CTL_PROC_NAME_FMT
76 # define CTL_PROC_NAME_FMT "/proc/%05d"
77 # define AS_PROC_NAME_FMT "/proc/%05d"
78 # define MAP_PROC_NAME_FMT "/proc/%05d"
79 # define STATUS_PROC_NAME_FMT "/proc/%05d"
81 #endif /* HAVE_MULTIPLE_PROC_FDS */
83 #define MAX_PROC_NAME_SIZE sizeof("/proc/1234567890/status")
85 extern struct target_ops procfs_ops; /* Forward declaration */
87 int procfs_suppress_run = 0; /* Non-zero if procfs should pretend not to
88 be a runnable target. Used by targets
89 that can sit atop procfs, such as solaris
92 #if 1 /* FIXME: Gross and ugly hack to resolve coredep.c global */
93 CORE_ADDR kernel_u_addr;
96 #ifdef BROKEN_SIGINFO_H /* Workaround broken SGS <sys/siginfo.h> */
98 #define si_pid _data._proc.pid
100 #define si_uid _data._proc._pdata._kill.uid
101 #endif /* BROKEN_SIGINFO_H */
103 /* Define structures for passing commands to /proc/pid/ctl file. Note that
104 while we create these for the PROCFS_USE_READ_WRITE world, we use them
105 and ignore the extra cmd int in other proc schemes.
107 /* generic ctl msg */
113 /* set general registers */
119 /* set fp registers */
125 /* set signals to be traced */
131 /* set faults to be traced */
137 /* set system calls to be traced */
143 /* set current signal to be traced */
149 /* All access to the inferior, either one started by gdb or one that has
150 been attached to, is controlled by an instance of a procinfo structure,
151 defined below. Since gdb currently only handles one inferior at a time,
152 the procinfo structure for the inferior is statically allocated and
153 only one exists at any given time. There is a separate procinfo
154 structure for use by the "info proc" command, so that we can print
155 useful information about any random process without interfering with
156 the inferior's procinfo information. */
159 struct procinfo *next;
160 int pid; /* Process ID of inferior */
161 int ctl_fd; /* File descriptor for /proc ctl file */
162 int status_fd; /* File descriptor for /proc status file */
163 int as_fd; /* File descriptor for /proc as file */
164 int map_fd; /* File descriptor for /proc map file */
165 char *pathname; /* Pathname to /proc entry */
166 int had_event; /* poll/select says something happened */
167 int was_stopped; /* Nonzero if was stopped prior to attach */
168 int nopass_next_sigstop; /* Don't pass a sigstop on next resume */
169 #ifndef HAVE_NO_PRRUN_T
170 prrun_t prrun; /* Control state when it is run */
172 gdb_prstatus_t prstatus; /* Current process status info */
173 struct greg_ctl gregset; /* General register set */
174 struct fpreg_ctl fpregset; /* Floating point register set */
175 struct flt_ctl fltset; /* Current traced hardware fault set */
176 struct sig_ctl trace; /* Current traced signal set */
177 struct sys_ctl exitset; /* Current traced system call exit set */
178 struct sys_ctl entryset; /* Current traced system call entry set */
179 struct sig_ctl saved_sighold; /* Saved held signal set */
180 struct flt_ctl saved_fltset; /* Saved traced hardware fault set */
181 struct sig_ctl saved_trace; /* Saved traced signal set */
182 struct sys_ctl saved_exitset; /* Saved traced system call exit set */
183 struct sys_ctl saved_entryset;/* Saved traced system call entry set */
184 int num_syscall_handlers; /* Number of syscall trap handlers
185 currently installed */
186 /* Pointer to list of syscall trap handlers */
187 struct procfs_syscall_handler *syscall_handlers;
188 int new_child; /* Non-zero if it's a new thread */
191 /* List of inferior process information */
192 static struct procinfo *procinfo_list = NULL;
193 static struct pollfd *poll_list; /* pollfds used for waiting on /proc */
195 static int num_poll_list = 0; /* Number of entries in poll_list */
197 /* Much of the information used in the /proc interface, particularly for
198 printing status information, is kept as tables of structures of the
199 following form. These tables can be used to map numeric values to
200 their symbolic names and to a string that describes their specific use. */
203 int value; /* The numeric value */
204 char *name; /* The equivalent symbolic value */
205 char *desc; /* Short description of value */
208 /* Translate bits in the pr_flags member of the prstatus structure, into the
209 names and desc information. */
211 static struct trans pr_flag_table[] =
213 #if defined (PR_STOPPED)
214 { PR_STOPPED, "PR_STOPPED", "Process is stopped" },
216 #if defined (PR_ISTOP)
217 { PR_ISTOP, "PR_ISTOP", "Stopped on an event of interest" },
219 #if defined (PR_DSTOP)
220 { PR_DSTOP, "PR_DSTOP", "A stop directive is in effect" },
222 #if defined (PR_ASLEEP)
223 { PR_ASLEEP, "PR_ASLEEP", "Sleeping in an interruptible system call" },
225 #if defined (PR_FORK)
226 { PR_FORK, "PR_FORK", "Inherit-on-fork is in effect" },
229 { PR_RLC, "PR_RLC", "Run-on-last-close is in effect" },
231 #if defined (PR_PTRACE)
232 { PR_PTRACE, "PR_PTRACE", "Process is being controlled by ptrace" },
234 #if defined (PR_PCINVAL)
235 { PR_PCINVAL, "PR_PCINVAL", "PC refers to an invalid virtual address" },
237 #if defined (PR_ISSYS)
238 { PR_ISSYS, "PR_ISSYS", "Is a system process" },
240 #if defined (PR_STEP)
241 { PR_STEP, "PR_STEP", "Process has single step pending" },
244 { PR_KLC, "PR_KLC", "Kill-on-last-close is in effect" },
246 #if defined (PR_ASYNC)
247 { PR_ASYNC, "PR_ASYNC", "Asynchronous stop is in effect" },
249 #if defined (PR_PCOMPAT)
250 { PR_PCOMPAT, "PR_PCOMPAT", "Ptrace compatibility mode in effect" },
252 #if defined (PR_MSACCT)
253 { PR_MSACCT, "PR_MSACCT", "Microstate accounting enabled" },
255 #if defined (PR_BPTADJ)
256 { PR_BPTADJ, "PR_BPTADJ", "Breakpoint PC adjustment in effect" },
258 #if defined (PR_ASLWP)
259 { PR_ASLWP, "PR_ASLWP", "Asynchronus signal LWP" },
264 /* Translate values in the pr_why field of the prstatus struct. */
266 static struct trans pr_why_table[] =
268 #if defined (PR_REQUESTED)
269 { PR_REQUESTED, "PR_REQUESTED", "Directed to stop via PIOCSTOP/PIOCWSTOP" },
271 #if defined (PR_SIGNALLED)
272 { PR_SIGNALLED, "PR_SIGNALLED", "Receipt of a traced signal" },
274 #if defined (PR_SYSENTRY)
275 { PR_SYSENTRY, "PR_SYSENTRY", "Entry to a traced system call" },
277 #if defined (PR_SYSEXIT)
278 { PR_SYSEXIT, "PR_SYSEXIT", "Exit from a traced system call" },
280 #if defined (PR_JOBCONTROL)
281 { PR_JOBCONTROL, "PR_JOBCONTROL", "Default job control stop signal action" },
283 #if defined (PR_FAULTED)
284 { PR_FAULTED, "PR_FAULTED", "Incurred a traced hardware fault" },
286 #if defined (PR_SUSPENDED)
287 { PR_SUSPENDED, "PR_SUSPENDED", "Process suspended" },
289 #if defined (PR_CHECKPOINT)
290 { PR_CHECKPOINT, "PR_CHECKPOINT", "(???)" },
295 /* Hardware fault translation table. */
297 static struct trans faults_table[] =
300 { FLTILL, "FLTILL", "Illegal instruction" },
302 #if defined (FLTPRIV)
303 { FLTPRIV, "FLTPRIV", "Privileged instruction" },
306 { FLTBPT, "FLTBPT", "Breakpoint trap" },
308 #if defined (FLTTRACE)
309 { FLTTRACE, "FLTTRACE", "Trace trap" },
311 #if defined (FLTACCESS)
312 { FLTACCESS, "FLTACCESS", "Memory access fault" },
314 #if defined (FLTBOUNDS)
315 { FLTBOUNDS, "FLTBOUNDS", "Memory bounds violation" },
317 #if defined (FLTIOVF)
318 { FLTIOVF, "FLTIOVF", "Integer overflow" },
320 #if defined (FLTIZDIV)
321 { FLTIZDIV, "FLTIZDIV", "Integer zero divide" },
324 { FLTFPE, "FLTFPE", "Floating-point exception" },
326 #if defined (FLTSTACK)
327 { FLTSTACK, "FLTSTACK", "Unrecoverable stack fault" },
329 #if defined (FLTPAGE)
330 { FLTPAGE, "FLTPAGE", "Recoverable page fault" },
335 /* Translation table for signal generation information. See UNIX System
336 V Release 4 Programmer's Reference Manual, siginfo(5). */
338 static struct sigcode {
343 } siginfo_table[] = {
344 #if defined (SIGILL) && defined (ILL_ILLOPC)
345 { SIGILL, ILL_ILLOPC, "ILL_ILLOPC", "Illegal opcode" },
347 #if defined (SIGILL) && defined (ILL_ILLOPN)
348 { SIGILL, ILL_ILLOPN, "ILL_ILLOPN", "Illegal operand", },
350 #if defined (SIGILL) && defined (ILL_ILLADR)
351 { SIGILL, ILL_ILLADR, "ILL_ILLADR", "Illegal addressing mode" },
353 #if defined (SIGILL) && defined (ILL_ILLTRP)
354 { SIGILL, ILL_ILLTRP, "ILL_ILLTRP", "Illegal trap" },
356 #if defined (SIGILL) && defined (ILL_PRVOPC)
357 { SIGILL, ILL_PRVOPC, "ILL_PRVOPC", "Privileged opcode" },
359 #if defined (SIGILL) && defined (ILL_PRVREG)
360 { SIGILL, ILL_PRVREG, "ILL_PRVREG", "Privileged register" },
362 #if defined (SIGILL) && defined (ILL_COPROC)
363 { SIGILL, ILL_COPROC, "ILL_COPROC", "Coprocessor error" },
365 #if defined (SIGILL) && defined (ILL_BADSTK)
366 { SIGILL, ILL_BADSTK, "ILL_BADSTK", "Internal stack error" },
368 #if defined (SIGFPE) && defined (FPE_INTDIV)
369 { SIGFPE, FPE_INTDIV, "FPE_INTDIV", "Integer divide by zero" },
371 #if defined (SIGFPE) && defined (FPE_INTOVF)
372 { SIGFPE, FPE_INTOVF, "FPE_INTOVF", "Integer overflow" },
374 #if defined (SIGFPE) && defined (FPE_FLTDIV)
375 { SIGFPE, FPE_FLTDIV, "FPE_FLTDIV", "Floating point divide by zero" },
377 #if defined (SIGFPE) && defined (FPE_FLTOVF)
378 { SIGFPE, FPE_FLTOVF, "FPE_FLTOVF", "Floating point overflow" },
380 #if defined (SIGFPE) && defined (FPE_FLTUND)
381 { SIGFPE, FPE_FLTUND, "FPE_FLTUND", "Floating point underflow" },
383 #if defined (SIGFPE) && defined (FPE_FLTRES)
384 { SIGFPE, FPE_FLTRES, "FPE_FLTRES", "Floating point inexact result" },
386 #if defined (SIGFPE) && defined (FPE_FLTINV)
387 { SIGFPE, FPE_FLTINV, "FPE_FLTINV", "Invalid floating point operation" },
389 #if defined (SIGFPE) && defined (FPE_FLTSUB)
390 { SIGFPE, FPE_FLTSUB, "FPE_FLTSUB", "Subscript out of range" },
392 #if defined (SIGSEGV) && defined (SEGV_MAPERR)
393 { SIGSEGV, SEGV_MAPERR, "SEGV_MAPERR", "Address not mapped to object" },
395 #if defined (SIGSEGV) && defined (SEGV_ACCERR)
396 { SIGSEGV, SEGV_ACCERR, "SEGV_ACCERR", "Invalid permissions for object" },
398 #if defined (SIGBUS) && defined (BUS_ADRALN)
399 { SIGBUS, BUS_ADRALN, "BUS_ADRALN", "Invalid address alignment" },
401 #if defined (SIGBUS) && defined (BUS_ADRERR)
402 { SIGBUS, BUS_ADRERR, "BUS_ADRERR", "Non-existent physical address" },
404 #if defined (SIGBUS) && defined (BUS_OBJERR)
405 { SIGBUS, BUS_OBJERR, "BUS_OBJERR", "Object specific hardware error" },
407 #if defined (SIGTRAP) && defined (TRAP_BRKPT)
408 { SIGTRAP, TRAP_BRKPT, "TRAP_BRKPT", "Process breakpoint" },
410 #if defined (SIGTRAP) && defined (TRAP_TRACE)
411 { SIGTRAP, TRAP_TRACE, "TRAP_TRACE", "Process trace trap" },
413 #if defined (SIGCLD) && defined (CLD_EXITED)
414 { SIGCLD, CLD_EXITED, "CLD_EXITED", "Child has exited" },
416 #if defined (SIGCLD) && defined (CLD_KILLED)
417 { SIGCLD, CLD_KILLED, "CLD_KILLED", "Child was killed" },
419 #if defined (SIGCLD) && defined (CLD_DUMPED)
420 { SIGCLD, CLD_DUMPED, "CLD_DUMPED", "Child has terminated abnormally" },
422 #if defined (SIGCLD) && defined (CLD_TRAPPED)
423 { SIGCLD, CLD_TRAPPED, "CLD_TRAPPED", "Traced child has trapped" },
425 #if defined (SIGCLD) && defined (CLD_STOPPED)
426 { SIGCLD, CLD_STOPPED, "CLD_STOPPED", "Child has stopped" },
428 #if defined (SIGCLD) && defined (CLD_CONTINUED)
429 { SIGCLD, CLD_CONTINUED, "CLD_CONTINUED", "Stopped child had continued" },
431 #if defined (SIGPOLL) && defined (POLL_IN)
432 { SIGPOLL, POLL_IN, "POLL_IN", "Input input available" },
434 #if defined (SIGPOLL) && defined (POLL_OUT)
435 { SIGPOLL, POLL_OUT, "POLL_OUT", "Output buffers available" },
437 #if defined (SIGPOLL) && defined (POLL_MSG)
438 { SIGPOLL, POLL_MSG, "POLL_MSG", "Input message available" },
440 #if defined (SIGPOLL) && defined (POLL_ERR)
441 { SIGPOLL, POLL_ERR, "POLL_ERR", "I/O error" },
443 #if defined (SIGPOLL) && defined (POLL_PRI)
444 { SIGPOLL, POLL_PRI, "POLL_PRI", "High priority input available" },
446 #if defined (SIGPOLL) && defined (POLL_HUP)
447 { SIGPOLL, POLL_HUP, "POLL_HUP", "Device disconnected" },
452 static char *syscall_table[MAX_SYSCALLS];
454 /* Prototypes for local functions */
456 static void procfs_stop PARAMS ((void));
458 static int procfs_thread_alive PARAMS ((int));
460 static int procfs_can_run PARAMS ((void));
462 static void procfs_mourn_inferior PARAMS ((void));
464 static void procfs_fetch_registers PARAMS ((int));
466 static int procfs_wait PARAMS ((int, struct target_waitstatus *));
468 static void procfs_open PARAMS ((char *, int));
470 static void procfs_files_info PARAMS ((struct target_ops *));
472 static void procfs_prepare_to_store PARAMS ((void));
474 static void procfs_detach PARAMS ((char *, int));
476 static void procfs_attach PARAMS ((char *, int));
478 static void proc_set_exec_trap PARAMS ((void));
480 static int procfs_init_inferior PARAMS ((int));
482 static struct procinfo *create_procinfo PARAMS ((int));
484 static void procfs_store_registers PARAMS ((int));
486 static int procfs_xfer_memory PARAMS ((CORE_ADDR, char *, int, int, struct target_ops *));
488 static void procfs_kill_inferior PARAMS ((void));
490 static char *sigcodedesc PARAMS ((siginfo_t *));
492 static char *sigcodename PARAMS ((siginfo_t *));
494 static struct procinfo *wait_fd PARAMS ((void));
496 static void remove_fd PARAMS ((struct procinfo *));
498 static void add_fd PARAMS ((struct procinfo *));
500 static void set_proc_siginfo PARAMS ((struct procinfo *, int));
502 static void init_syscall_table PARAMS ((void));
504 static char *syscallname PARAMS ((int));
506 static char *signalname PARAMS ((int));
508 static char *errnoname PARAMS ((int));
510 static int proc_address_to_fd PARAMS ((struct procinfo *, CORE_ADDR, int));
512 static int open_proc_file PARAMS ((int, struct procinfo *, int, int));
514 static void close_proc_file PARAMS ((struct procinfo *));
516 static void unconditionally_kill_inferior PARAMS ((struct procinfo *));
518 static NORETURN void proc_init_failed PARAMS ((struct procinfo *, char *, int)) ATTR_NORETURN;
520 static void info_proc PARAMS ((char *, int));
522 static void info_proc_flags PARAMS ((struct procinfo *, int));
524 static void info_proc_stop PARAMS ((struct procinfo *, int));
526 static void info_proc_siginfo PARAMS ((struct procinfo *, int));
528 static void info_proc_syscalls PARAMS ((struct procinfo *, int));
530 static void info_proc_mappings PARAMS ((struct procinfo *, int));
532 static void info_proc_signals PARAMS ((struct procinfo *, int));
534 static void info_proc_faults PARAMS ((struct procinfo *, int));
536 static char *mappingflags PARAMS ((long));
538 static char *lookupname PARAMS ((struct trans *, unsigned int, char *));
540 static char *lookupdesc PARAMS ((struct trans *, unsigned int));
542 static int do_attach PARAMS ((int pid));
544 static void do_detach PARAMS ((int siggnal));
546 static void procfs_create_inferior PARAMS ((char *, char *, char **));
548 static void procfs_notice_signals PARAMS ((int pid));
550 static void notice_signals PARAMS ((struct procinfo *, struct sig_ctl *));
552 static struct procinfo *find_procinfo PARAMS ((pid_t pid, int okfail));
554 static int procfs_write_pcwstop PARAMS ((struct procinfo *));
555 static int procfs_read_status PARAMS ((struct procinfo *));
556 static void procfs_write_pckill PARAMS ((struct procinfo *));
558 typedef int syscall_func_t PARAMS ((struct procinfo *pi, int syscall_num,
559 int why, int *rtnval, int *statval));
561 static void procfs_set_syscall_trap PARAMS ((struct procinfo *pi,
562 int syscall_num, int flags,
563 syscall_func_t *func));
565 static void procfs_clear_syscall_trap PARAMS ((struct procinfo *pi,
566 int syscall_num, int errok));
568 #define PROCFS_SYSCALL_ENTRY 0x1 /* Trap on entry to sys call */
569 #define PROCFS_SYSCALL_EXIT 0x2 /* Trap on exit from sys call */
571 static syscall_func_t procfs_exit_handler;
573 static syscall_func_t procfs_exec_handler;
576 static syscall_func_t procfs_sproc_handler;
577 static syscall_func_t procfs_fork_handler;
580 #ifdef SYS_lwp_create
581 static syscall_func_t procfs_lwp_creation_handler;
584 static void modify_inherit_on_fork_flag PARAMS ((int fd, int flag));
585 static void modify_run_on_last_close_flag PARAMS ((int fd, int flag));
589 struct procfs_syscall_handler
591 int syscall_num; /* The number of the system call being handled */
592 /* The function to be called */
593 syscall_func_t *func;
596 static void procfs_resume PARAMS ((int pid, int step,
597 enum target_signal signo));
599 /* External function prototypes that can't be easily included in any
600 header file because the args are typedefs in system include files. */
602 extern void supply_gregset PARAMS ((gregset_t *));
604 extern void fill_gregset PARAMS ((gregset_t *, int));
607 extern void supply_fpregset PARAMS ((fpregset_t *));
609 extern void fill_fpregset PARAMS ((fpregset_t *, int));
616 find_procinfo -- convert a process id to a struct procinfo
620 static struct procinfo * find_procinfo (pid_t pid, int okfail);
624 Given a process id, look it up in the procinfo chain. Returns
625 a struct procinfo *. If can't find pid, then call error(),
626 unless okfail is set, in which case, return NULL;
629 static struct procinfo *
630 find_procinfo (pid, okfail)
634 struct procinfo *procinfo;
636 for (procinfo = procinfo_list; procinfo; procinfo = procinfo->next)
637 if (procinfo->pid == pid)
643 error ("procfs (find_procinfo): Couldn't locate pid %d", pid);
650 current_procinfo -- convert inferior_pid to a struct procinfo
654 static struct procinfo * current_procinfo;
658 Looks up inferior_pid in the procinfo chain. Always returns a
659 struct procinfo *. If process can't be found, we error() out.
662 #define current_procinfo find_procinfo (inferior_pid, 0)
668 add_fd -- Add the fd to the poll/select list
672 static void add_fd (struct procinfo *);
676 Add the fd of the supplied procinfo to the list of fds used for
677 poll/select operations.
684 if (num_poll_list <= 0)
685 poll_list = (struct pollfd *) xmalloc (sizeof (struct pollfd));
687 poll_list = (struct pollfd *) xrealloc (poll_list,
689 * sizeof (struct pollfd));
690 poll_list[num_poll_list].fd = pi->ctl_fd;
692 poll_list[num_poll_list].events = POLLWRNORM;
694 poll_list[num_poll_list].events = POLLPRI;
704 remove_fd -- Remove the fd from the poll/select list
708 static void remove_fd (struct procinfo *);
712 Remove the fd of the supplied procinfo from the list of fds used
713 for poll/select operations.
722 for (i = 0; i < num_poll_list; i++)
724 if (poll_list[i].fd == pi->ctl_fd)
726 if (i != num_poll_list - 1)
727 memcpy (poll_list + i, poll_list + i + 1,
728 (num_poll_list - i - 1) * sizeof (struct pollfd));
732 if (num_poll_list == 0)
735 poll_list = (struct pollfd *) xrealloc (poll_list,
737 * sizeof (struct pollfd));
747 procfs_read_status - get procfs fd status
751 static int procfs_read_status (pi) struct procinfo *pi;
755 Given a pointer to a procinfo struct, get the status of
756 the status_fd in the appropriate way. Returns 0 on failure,
761 procfs_read_status (pi)
764 #ifdef PROCFS_USE_READ_WRITE
765 if ((lseek (pi->status_fd, 0, SEEK_SET) < 0) ||
766 (read (pi->status_fd, (char *) &pi->prstatus,
767 sizeof (gdb_prstatus_t)) != sizeof (gdb_prstatus_t)))
769 if (ioctl (pi->status_fd, PIOCSTATUS, &pi->prstatus) < 0)
780 procfs_write_pcwstop - send a PCWSTOP to procfs fd
784 static int procfs_write_pcwstop (pi) struct procinfo *pi;
788 Given a pointer to a procinfo struct, send a PCWSTOP to
789 the ctl_fd in the appropriate way. Returns 0 on failure,
794 procfs_write_pcwstop (pi)
797 #ifdef PROCFS_USE_READ_WRITE
799 if (write (pi->ctl_fd, (char *) &cmd, sizeof (long)) < 0)
801 if (ioctl (pi->ctl_fd, PIOCWSTOP, &pi->prstatus) < 0)
812 procfs_write_pckill - send a kill to procfs fd
816 static void procfs_write_pckill (pi) struct procinfo *pi;
820 Given a pointer to a procinfo struct, send a kill to
821 the ctl_fd in the appropriate way. Returns 0 on failure,
826 procfs_write_pckill (pi)
829 #ifdef PROCFS_USE_READ_WRITE
830 struct proc_ctl pctl;
833 write (pi->ctl_fd, &pctl, sizeof (struct proc_ctl));
836 ioctl (pi->ctl_fd, PIOCKILL, &signo);
840 static struct procinfo *
843 struct procinfo *pi, *next_pi;
849 set_sigint_trap (); /* Causes SIGINT to be passed on to the
857 num_fds = poll (poll_list, num_poll_list, -1);
860 if (num_fds < 0 && errno == EINTR)
862 print_sys_errmsg ("poll failed", errno);
863 error ("Poll failed, returned %d", num_fds);
865 #else /* LOSING_POLL */
866 pi = current_procinfo;
868 while (!procfs_write_pcwstop (pi))
872 /* Process exited. */
873 pi->prstatus.pr_flags = 0;
876 else if (errno != EINTR)
878 print_sys_errmsg (pi->pathname, errno);
879 error ("procfs_write_pcwstop failed");
883 #endif /* LOSING_POLL */
885 clear_sigint_trap ();
890 for (i = 0; i < num_poll_list && num_fds > 0; i++)
892 if (0 == (poll_list[i].revents &
893 (POLLWRNORM | POLLPRI | POLLERR | POLLHUP | POLLNVAL)))
895 for (pi = procinfo_list; pi; pi = next_pi)
898 if (poll_list[i].fd == pi->ctl_fd)
901 if ((poll_list[i].revents & POLLHUP) != 0 ||
902 !procfs_read_status(pi))
903 { /* The LWP has apparently terminated. */
905 printf_filtered ("LWP %d exited.\n",
906 (pi->pid >> 16) & 0xffff);
907 close_proc_file (pi);
909 continue; /* already another event to process */
911 goto wait_again; /* wait for another event */
918 error ("wait_fd: Couldn't find procinfo for fd %d\n",
921 #endif /* LOSING_POLL */
930 lookupdesc -- translate a value to a summary desc string
934 static char *lookupdesc (struct trans *transp, unsigned int val);
938 Given a pointer to a translation table and a value to be translated,
939 lookup the desc string and return it.
943 lookupdesc (transp, val)
944 struct trans *transp;
949 for (desc = NULL; transp -> name != NULL; transp++)
951 if (transp -> value == val)
953 desc = transp -> desc;
958 /* Didn't find a translation for the specified value, set a default one. */
971 lookupname -- translate a value to symbolic name
975 static char *lookupname (struct trans *transp, unsigned int val,
980 Given a pointer to a translation table, a value to be translated,
981 and a default prefix to return if the value can't be translated,
982 match the value with one of the translation table entries and
983 return a pointer to the symbolic name.
985 If no match is found it just returns the value as a printable string,
986 with the given prefix. The previous such value, if any, is freed
991 lookupname (transp, val, prefix)
992 struct trans *transp;
999 for (name = NULL; transp -> name != NULL; transp++)
1001 if (transp -> value == val)
1003 name = transp -> name;
1008 /* Didn't find a translation for the specified value, build a default
1009 one using the specified prefix and return it. The lifetime of
1010 the value is only until the next one is needed. */
1018 locbuf = xmalloc (strlen (prefix) + 16);
1019 sprintf (locbuf, "%s %u", prefix, val);
1029 struct sigcode *scp;
1031 static char locbuf[32];
1033 for (scp = siginfo_table; scp -> codename != NULL; scp++)
1035 if ((scp -> signo == sip -> si_signo) &&
1036 (scp -> code == sip -> si_code))
1038 name = scp -> codename;
1044 sprintf (locbuf, "sigcode %u", sip -> si_signo);
1054 struct sigcode *scp;
1057 for (scp = siginfo_table; scp -> codename != NULL; scp++)
1059 if ((scp -> signo == sip -> si_signo) &&
1060 (scp -> code == sip -> si_code))
1068 desc = "Unrecognized signal or trap use";
1077 syscallname - translate a system call number into a system call name
1081 char *syscallname (int syscallnum)
1085 Given a system call number, translate it into the printable name
1086 of a system call, or into "syscall <num>" if it is an unknown
1091 syscallname (syscallnum)
1094 static char locbuf[32];
1096 if (syscallnum >= 0 && syscallnum < MAX_SYSCALLS
1097 && syscall_table[syscallnum] != NULL)
1098 return syscall_table[syscallnum];
1101 sprintf (locbuf, "syscall %u", syscallnum);
1110 init_syscall_table - initialize syscall translation table
1114 void init_syscall_table (void)
1118 Dynamically initialize the translation table to convert system
1119 call numbers into printable system call names. Done once per
1120 gdb run, on initialization.
1124 This is awfully ugly, but preprocessor tricks to make it prettier
1125 tend to be nonportable.
1129 init_syscall_table ()
1131 #if defined (SYS_exit)
1132 syscall_table[SYS_exit] = "exit";
1134 #if defined (SYS_fork)
1135 syscall_table[SYS_fork] = "fork";
1137 #if defined (SYS_read)
1138 syscall_table[SYS_read] = "read";
1140 #if defined (SYS_write)
1141 syscall_table[SYS_write] = "write";
1143 #if defined (SYS_open)
1144 syscall_table[SYS_open] = "open";
1146 #if defined (SYS_close)
1147 syscall_table[SYS_close] = "close";
1149 #if defined (SYS_wait)
1150 syscall_table[SYS_wait] = "wait";
1152 #if defined (SYS_creat)
1153 syscall_table[SYS_creat] = "creat";
1155 #if defined (SYS_link)
1156 syscall_table[SYS_link] = "link";
1158 #if defined (SYS_unlink)
1159 syscall_table[SYS_unlink] = "unlink";
1161 #if defined (SYS_exec)
1162 syscall_table[SYS_exec] = "exec";
1164 #if defined (SYS_execv)
1165 syscall_table[SYS_execv] = "execv";
1167 #if defined (SYS_execve)
1168 syscall_table[SYS_execve] = "execve";
1170 #if defined (SYS_chdir)
1171 syscall_table[SYS_chdir] = "chdir";
1173 #if defined (SYS_time)
1174 syscall_table[SYS_time] = "time";
1176 #if defined (SYS_mknod)
1177 syscall_table[SYS_mknod] = "mknod";
1179 #if defined (SYS_chmod)
1180 syscall_table[SYS_chmod] = "chmod";
1182 #if defined (SYS_chown)
1183 syscall_table[SYS_chown] = "chown";
1185 #if defined (SYS_brk)
1186 syscall_table[SYS_brk] = "brk";
1188 #if defined (SYS_stat)
1189 syscall_table[SYS_stat] = "stat";
1191 #if defined (SYS_lseek)
1192 syscall_table[SYS_lseek] = "lseek";
1194 #if defined (SYS_getpid)
1195 syscall_table[SYS_getpid] = "getpid";
1197 #if defined (SYS_mount)
1198 syscall_table[SYS_mount] = "mount";
1200 #if defined (SYS_umount)
1201 syscall_table[SYS_umount] = "umount";
1203 #if defined (SYS_setuid)
1204 syscall_table[SYS_setuid] = "setuid";
1206 #if defined (SYS_getuid)
1207 syscall_table[SYS_getuid] = "getuid";
1209 #if defined (SYS_stime)
1210 syscall_table[SYS_stime] = "stime";
1212 #if defined (SYS_ptrace)
1213 syscall_table[SYS_ptrace] = "ptrace";
1215 #if defined (SYS_alarm)
1216 syscall_table[SYS_alarm] = "alarm";
1218 #if defined (SYS_fstat)
1219 syscall_table[SYS_fstat] = "fstat";
1221 #if defined (SYS_pause)
1222 syscall_table[SYS_pause] = "pause";
1224 #if defined (SYS_utime)
1225 syscall_table[SYS_utime] = "utime";
1227 #if defined (SYS_stty)
1228 syscall_table[SYS_stty] = "stty";
1230 #if defined (SYS_gtty)
1231 syscall_table[SYS_gtty] = "gtty";
1233 #if defined (SYS_access)
1234 syscall_table[SYS_access] = "access";
1236 #if defined (SYS_nice)
1237 syscall_table[SYS_nice] = "nice";
1239 #if defined (SYS_statfs)
1240 syscall_table[SYS_statfs] = "statfs";
1242 #if defined (SYS_sync)
1243 syscall_table[SYS_sync] = "sync";
1245 #if defined (SYS_kill)
1246 syscall_table[SYS_kill] = "kill";
1248 #if defined (SYS_fstatfs)
1249 syscall_table[SYS_fstatfs] = "fstatfs";
1251 #if defined (SYS_pgrpsys)
1252 syscall_table[SYS_pgrpsys] = "pgrpsys";
1254 #if defined (SYS_xenix)
1255 syscall_table[SYS_xenix] = "xenix";
1257 #if defined (SYS_dup)
1258 syscall_table[SYS_dup] = "dup";
1260 #if defined (SYS_pipe)
1261 syscall_table[SYS_pipe] = "pipe";
1263 #if defined (SYS_times)
1264 syscall_table[SYS_times] = "times";
1266 #if defined (SYS_profil)
1267 syscall_table[SYS_profil] = "profil";
1269 #if defined (SYS_plock)
1270 syscall_table[SYS_plock] = "plock";
1272 #if defined (SYS_setgid)
1273 syscall_table[SYS_setgid] = "setgid";
1275 #if defined (SYS_getgid)
1276 syscall_table[SYS_getgid] = "getgid";
1278 #if defined (SYS_signal)
1279 syscall_table[SYS_signal] = "signal";
1281 #if defined (SYS_msgsys)
1282 syscall_table[SYS_msgsys] = "msgsys";
1284 #if defined (SYS_sys3b)
1285 syscall_table[SYS_sys3b] = "sys3b";
1287 #if defined (SYS_sysi86)
1288 syscall_table[SYS_sysi86] = "sysi86";
1290 #if defined (SYS_acct)
1291 syscall_table[SYS_acct] = "acct";
1293 #if defined (SYS_shmsys)
1294 syscall_table[SYS_shmsys] = "shmsys";
1296 #if defined (SYS_semsys)
1297 syscall_table[SYS_semsys] = "semsys";
1299 #if defined (SYS_ioctl)
1300 syscall_table[SYS_ioctl] = "ioctl";
1302 #if defined (SYS_uadmin)
1303 syscall_table[SYS_uadmin] = "uadmin";
1305 #if defined (SYS_utssys)
1306 syscall_table[SYS_utssys] = "utssys";
1308 #if defined (SYS_fsync)
1309 syscall_table[SYS_fsync] = "fsync";
1311 #if defined (SYS_umask)
1312 syscall_table[SYS_umask] = "umask";
1314 #if defined (SYS_chroot)
1315 syscall_table[SYS_chroot] = "chroot";
1317 #if defined (SYS_fcntl)
1318 syscall_table[SYS_fcntl] = "fcntl";
1320 #if defined (SYS_ulimit)
1321 syscall_table[SYS_ulimit] = "ulimit";
1323 #if defined (SYS_rfsys)
1324 syscall_table[SYS_rfsys] = "rfsys";
1326 #if defined (SYS_rmdir)
1327 syscall_table[SYS_rmdir] = "rmdir";
1329 #if defined (SYS_mkdir)
1330 syscall_table[SYS_mkdir] = "mkdir";
1332 #if defined (SYS_getdents)
1333 syscall_table[SYS_getdents] = "getdents";
1335 #if defined (SYS_sysfs)
1336 syscall_table[SYS_sysfs] = "sysfs";
1338 #if defined (SYS_getmsg)
1339 syscall_table[SYS_getmsg] = "getmsg";
1341 #if defined (SYS_putmsg)
1342 syscall_table[SYS_putmsg] = "putmsg";
1344 #if defined (SYS_poll)
1345 syscall_table[SYS_poll] = "poll";
1347 #if defined (SYS_lstat)
1348 syscall_table[SYS_lstat] = "lstat";
1350 #if defined (SYS_symlink)
1351 syscall_table[SYS_symlink] = "symlink";
1353 #if defined (SYS_readlink)
1354 syscall_table[SYS_readlink] = "readlink";
1356 #if defined (SYS_setgroups)
1357 syscall_table[SYS_setgroups] = "setgroups";
1359 #if defined (SYS_getgroups)
1360 syscall_table[SYS_getgroups] = "getgroups";
1362 #if defined (SYS_fchmod)
1363 syscall_table[SYS_fchmod] = "fchmod";
1365 #if defined (SYS_fchown)
1366 syscall_table[SYS_fchown] = "fchown";
1368 #if defined (SYS_sigprocmask)
1369 syscall_table[SYS_sigprocmask] = "sigprocmask";
1371 #if defined (SYS_sigsuspend)
1372 syscall_table[SYS_sigsuspend] = "sigsuspend";
1374 #if defined (SYS_sigaltstack)
1375 syscall_table[SYS_sigaltstack] = "sigaltstack";
1377 #if defined (SYS_sigaction)
1378 syscall_table[SYS_sigaction] = "sigaction";
1380 #if defined (SYS_sigpending)
1381 syscall_table[SYS_sigpending] = "sigpending";
1383 #if defined (SYS_context)
1384 syscall_table[SYS_context] = "context";
1386 #if defined (SYS_evsys)
1387 syscall_table[SYS_evsys] = "evsys";
1389 #if defined (SYS_evtrapret)
1390 syscall_table[SYS_evtrapret] = "evtrapret";
1392 #if defined (SYS_statvfs)
1393 syscall_table[SYS_statvfs] = "statvfs";
1395 #if defined (SYS_fstatvfs)
1396 syscall_table[SYS_fstatvfs] = "fstatvfs";
1398 #if defined (SYS_nfssys)
1399 syscall_table[SYS_nfssys] = "nfssys";
1401 #if defined (SYS_waitsys)
1402 syscall_table[SYS_waitsys] = "waitsys";
1404 #if defined (SYS_sigsendsys)
1405 syscall_table[SYS_sigsendsys] = "sigsendsys";
1407 #if defined (SYS_hrtsys)
1408 syscall_table[SYS_hrtsys] = "hrtsys";
1410 #if defined (SYS_acancel)
1411 syscall_table[SYS_acancel] = "acancel";
1413 #if defined (SYS_async)
1414 syscall_table[SYS_async] = "async";
1416 #if defined (SYS_priocntlsys)
1417 syscall_table[SYS_priocntlsys] = "priocntlsys";
1419 #if defined (SYS_pathconf)
1420 syscall_table[SYS_pathconf] = "pathconf";
1422 #if defined (SYS_mincore)
1423 syscall_table[SYS_mincore] = "mincore";
1425 #if defined (SYS_mmap)
1426 syscall_table[SYS_mmap] = "mmap";
1428 #if defined (SYS_mprotect)
1429 syscall_table[SYS_mprotect] = "mprotect";
1431 #if defined (SYS_munmap)
1432 syscall_table[SYS_munmap] = "munmap";
1434 #if defined (SYS_fpathconf)
1435 syscall_table[SYS_fpathconf] = "fpathconf";
1437 #if defined (SYS_vfork)
1438 syscall_table[SYS_vfork] = "vfork";
1440 #if defined (SYS_fchdir)
1441 syscall_table[SYS_fchdir] = "fchdir";
1443 #if defined (SYS_readv)
1444 syscall_table[SYS_readv] = "readv";
1446 #if defined (SYS_writev)
1447 syscall_table[SYS_writev] = "writev";
1449 #if defined (SYS_xstat)
1450 syscall_table[SYS_xstat] = "xstat";
1452 #if defined (SYS_lxstat)
1453 syscall_table[SYS_lxstat] = "lxstat";
1455 #if defined (SYS_fxstat)
1456 syscall_table[SYS_fxstat] = "fxstat";
1458 #if defined (SYS_xmknod)
1459 syscall_table[SYS_xmknod] = "xmknod";
1461 #if defined (SYS_clocal)
1462 syscall_table[SYS_clocal] = "clocal";
1464 #if defined (SYS_setrlimit)
1465 syscall_table[SYS_setrlimit] = "setrlimit";
1467 #if defined (SYS_getrlimit)
1468 syscall_table[SYS_getrlimit] = "getrlimit";
1470 #if defined (SYS_lchown)
1471 syscall_table[SYS_lchown] = "lchown";
1473 #if defined (SYS_memcntl)
1474 syscall_table[SYS_memcntl] = "memcntl";
1476 #if defined (SYS_getpmsg)
1477 syscall_table[SYS_getpmsg] = "getpmsg";
1479 #if defined (SYS_putpmsg)
1480 syscall_table[SYS_putpmsg] = "putpmsg";
1482 #if defined (SYS_rename)
1483 syscall_table[SYS_rename] = "rename";
1485 #if defined (SYS_uname)
1486 syscall_table[SYS_uname] = "uname";
1488 #if defined (SYS_setegid)
1489 syscall_table[SYS_setegid] = "setegid";
1491 #if defined (SYS_sysconfig)
1492 syscall_table[SYS_sysconfig] = "sysconfig";
1494 #if defined (SYS_adjtime)
1495 syscall_table[SYS_adjtime] = "adjtime";
1497 #if defined (SYS_systeminfo)
1498 syscall_table[SYS_systeminfo] = "systeminfo";
1500 #if defined (SYS_seteuid)
1501 syscall_table[SYS_seteuid] = "seteuid";
1503 #if defined (SYS_sproc)
1504 syscall_table[SYS_sproc] = "sproc";
1506 #if defined (SYS_keyctl)
1507 syscall_table[SYS_keyctl] = "keyctl";
1509 #if defined (SYS_secsys)
1510 syscall_table[SYS_secsys] = "secsys";
1512 #if defined (SYS_filepriv)
1513 syscall_table[SYS_filepriv] = "filepriv";
1515 #if defined (SYS_procpriv)
1516 syscall_table[SYS_procpriv] = "procpriv";
1518 #if defined (SYS_devstat)
1519 syscall_table[SYS_devstat] = "devstat";
1521 #if defined (SYS_aclipc)
1522 syscall_table[SYS_aclipc] = "aclipc";
1524 #if defined (SYS_fdevstat)
1525 syscall_table[SYS_fdevstat] = "fdevstat";
1527 #if defined (SYS_flvlfile)
1528 syscall_table[SYS_flvlfile] = "flvlfile";
1530 #if defined (SYS_lvlfile)
1531 syscall_table[SYS_lvlfile] = "lvlfile";
1533 #if defined (SYS_lvlequal)
1534 syscall_table[SYS_lvlequal] = "lvlequal";
1536 #if defined (SYS_lvlproc)
1537 syscall_table[SYS_lvlproc] = "lvlproc";
1539 #if defined (SYS_lvlipc)
1540 syscall_table[SYS_lvlipc] = "lvlipc";
1542 #if defined (SYS_acl)
1543 syscall_table[SYS_acl] = "acl";
1545 #if defined (SYS_auditevt)
1546 syscall_table[SYS_auditevt] = "auditevt";
1548 #if defined (SYS_auditctl)
1549 syscall_table[SYS_auditctl] = "auditctl";
1551 #if defined (SYS_auditdmp)
1552 syscall_table[SYS_auditdmp] = "auditdmp";
1554 #if defined (SYS_auditlog)
1555 syscall_table[SYS_auditlog] = "auditlog";
1557 #if defined (SYS_auditbuf)
1558 syscall_table[SYS_auditbuf] = "auditbuf";
1560 #if defined (SYS_lvldom)
1561 syscall_table[SYS_lvldom] = "lvldom";
1563 #if defined (SYS_lvlvfs)
1564 syscall_table[SYS_lvlvfs] = "lvlvfs";
1566 #if defined (SYS_mkmld)
1567 syscall_table[SYS_mkmld] = "mkmld";
1569 #if defined (SYS_mldmode)
1570 syscall_table[SYS_mldmode] = "mldmode";
1572 #if defined (SYS_secadvise)
1573 syscall_table[SYS_secadvise] = "secadvise";
1575 #if defined (SYS_online)
1576 syscall_table[SYS_online] = "online";
1578 #if defined (SYS_setitimer)
1579 syscall_table[SYS_setitimer] = "setitimer";
1581 #if defined (SYS_getitimer)
1582 syscall_table[SYS_getitimer] = "getitimer";
1584 #if defined (SYS_gettimeofday)
1585 syscall_table[SYS_gettimeofday] = "gettimeofday";
1587 #if defined (SYS_settimeofday)
1588 syscall_table[SYS_settimeofday] = "settimeofday";
1590 #if defined (SYS_lwp_create)
1591 syscall_table[SYS_lwp_create] = "_lwp_create";
1593 #if defined (SYS_lwp_exit)
1594 syscall_table[SYS_lwp_exit] = "_lwp_exit";
1596 #if defined (SYS_lwp_wait)
1597 syscall_table[SYS_lwp_wait] = "_lwp_wait";
1599 #if defined (SYS_lwp_self)
1600 syscall_table[SYS_lwp_self] = "_lwp_self";
1602 #if defined (SYS_lwp_info)
1603 syscall_table[SYS_lwp_info] = "_lwp_info";
1605 #if defined (SYS_lwp_private)
1606 syscall_table[SYS_lwp_private] = "_lwp_private";
1608 #if defined (SYS_processor_bind)
1609 syscall_table[SYS_processor_bind] = "processor_bind";
1611 #if defined (SYS_processor_exbind)
1612 syscall_table[SYS_processor_exbind] = "processor_exbind";
1614 #if defined (SYS_prepblock)
1615 syscall_table[SYS_prepblock] = "prepblock";
1617 #if defined (SYS_block)
1618 syscall_table[SYS_block] = "block";
1620 #if defined (SYS_rdblock)
1621 syscall_table[SYS_rdblock] = "rdblock";
1623 #if defined (SYS_unblock)
1624 syscall_table[SYS_unblock] = "unblock";
1626 #if defined (SYS_cancelblock)
1627 syscall_table[SYS_cancelblock] = "cancelblock";
1629 #if defined (SYS_pread)
1630 syscall_table[SYS_pread] = "pread";
1632 #if defined (SYS_pwrite)
1633 syscall_table[SYS_pwrite] = "pwrite";
1635 #if defined (SYS_truncate)
1636 syscall_table[SYS_truncate] = "truncate";
1638 #if defined (SYS_ftruncate)
1639 syscall_table[SYS_ftruncate] = "ftruncate";
1641 #if defined (SYS_lwp_kill)
1642 syscall_table[SYS_lwp_kill] = "_lwp_kill";
1644 #if defined (SYS_sigwait)
1645 syscall_table[SYS_sigwait] = "sigwait";
1647 #if defined (SYS_fork1)
1648 syscall_table[SYS_fork1] = "fork1";
1650 #if defined (SYS_forkall)
1651 syscall_table[SYS_forkall] = "forkall";
1653 #if defined (SYS_modload)
1654 syscall_table[SYS_modload] = "modload";
1656 #if defined (SYS_moduload)
1657 syscall_table[SYS_moduload] = "moduload";
1659 #if defined (SYS_modpath)
1660 syscall_table[SYS_modpath] = "modpath";
1662 #if defined (SYS_modstat)
1663 syscall_table[SYS_modstat] = "modstat";
1665 #if defined (SYS_modadm)
1666 syscall_table[SYS_modadm] = "modadm";
1668 #if defined (SYS_getksym)
1669 syscall_table[SYS_getksym] = "getksym";
1671 #if defined (SYS_lwp_suspend)
1672 syscall_table[SYS_lwp_suspend] = "_lwp_suspend";
1674 #if defined (SYS_lwp_continue)
1675 syscall_table[SYS_lwp_continue] = "_lwp_continue";
1677 #if defined (SYS_priocntllst)
1678 syscall_table[SYS_priocntllst] = "priocntllst";
1680 #if defined (SYS_sleep)
1681 syscall_table[SYS_sleep] = "sleep";
1683 #if defined (SYS_lwp_sema_wait)
1684 syscall_table[SYS_lwp_sema_wait] = "_lwp_sema_wait";
1686 #if defined (SYS_lwp_sema_post)
1687 syscall_table[SYS_lwp_sema_post] = "_lwp_sema_post";
1689 #if defined (SYS_lwp_sema_trywait)
1690 syscall_table[SYS_lwp_sema_trywait] = "lwp_sema_trywait";
1698 procfs_kill_inferior - kill any currently inferior
1702 void procfs_kill_inferior (void)
1706 Kill any current inferior.
1710 Kills even attached inferiors. Presumably the user has already
1711 been prompted that the inferior is an attached one rather than
1712 one started by gdb. (FIXME?)
1717 procfs_kill_inferior ()
1719 target_mourn_inferior ();
1726 unconditionally_kill_inferior - terminate the inferior
1730 static void unconditionally_kill_inferior (struct procinfo *)
1734 Kill the specified inferior.
1738 A possibly useful enhancement would be to first try sending
1739 the inferior a terminate signal, politely asking it to commit
1740 suicide, before we murder it (we could call that
1741 politely_kill_inferior()).
1746 unconditionally_kill_inferior (pi)
1747 struct procinfo *pi;
1750 struct proc_ctl pctl;
1752 ppid = pi->prstatus.pr_ppid;
1754 #ifdef PROCFS_NEED_CLEAR_CURSIG_FOR_KILL
1755 /* Alpha OSF/1-3.x procfs needs a clear of the current signal
1756 before the PIOCKILL, otherwise it might generate a corrupted core
1757 file for the inferior. */
1758 ioctl (pi->ctl_fd, PIOCSSIG, NULL);
1760 #ifdef PROCFS_NEED_PIOCSSIG_FOR_KILL
1761 /* Alpha OSF/1-2.x procfs needs a PIOCSSIG call with a SIGKILL signal
1762 to kill the inferior, otherwise it might remain stopped with a
1764 We do not check the result of the PIOCSSIG, the inferior might have
1767 struct siginfo newsiginfo;
1769 memset ((char *) &newsiginfo, 0, sizeof (newsiginfo));
1770 newsiginfo.si_signo = SIGKILL;
1771 newsiginfo.si_code = 0;
1772 newsiginfo.si_errno = 0;
1773 newsiginfo.si_pid = getpid ();
1774 newsiginfo.si_uid = getuid ();
1775 ioctl (pi->ctl_fd, PIOCSSIG, &newsiginfo);
1777 #else /* PROCFS_NEED_PIOCSSIG_FOR_KILL */
1778 procfs_write_pckill (pi);
1779 #endif /* PROCFS_NEED_PIOCSSIG_FOR_KILL */
1781 close_proc_file (pi);
1783 /* Only wait() for our direct children. Our grandchildren zombies are killed
1784 by the death of their parents. */
1786 if (ppid == getpid())
1794 procfs_xfer_memory -- copy data to or from inferior memory space
1798 int procfs_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len,
1799 int dowrite, struct target_ops target)
1803 Copy LEN bytes to/from inferior's memory starting at MEMADDR
1804 from/to debugger memory starting at MYADDR. Copy from inferior
1805 if DOWRITE is zero or to inferior if DOWRITE is nonzero.
1807 Returns the length copied, which is either the LEN argument or
1808 zero. This xfer function does not do partial moves, since procfs_ops
1809 doesn't allow memory operations to cross below us in the target stack
1814 The /proc interface makes this an almost trivial task.
1818 procfs_xfer_memory (memaddr, myaddr, len, dowrite, target)
1823 struct target_ops *target; /* ignored */
1826 struct procinfo *pi;
1828 pi = current_procinfo;
1830 if (lseek(pi->as_fd, (off_t) memaddr, SEEK_SET) == (off_t) memaddr)
1834 nbytes = write (pi->as_fd, myaddr, len);
1838 nbytes = read (pi->as_fd, myaddr, len);
1852 procfs_store_registers -- copy register values back to inferior
1856 void procfs_store_registers (int regno)
1860 Store our current register values back into the inferior. If
1861 REGNO is -1 then store all the register, otherwise store just
1862 the value specified by REGNO.
1866 If we are storing only a single register, we first have to get all
1867 the current values from the process, overwrite the desired register
1868 in the gregset with the one we want from gdb's registers, and then
1869 send the whole set back to the process. For writing all the
1870 registers, all we have to do is generate the gregset and send it to
1873 Also note that the process has to be stopped on an event of interest
1874 for this to work, which basically means that it has to have been
1875 run under the control of one of the other /proc ioctl calls and not
1876 ptrace. Since we don't use ptrace anyway, we don't worry about this
1877 fine point, but it is worth noting for future reference.
1879 Gdb is confused about what this function is supposed to return.
1880 Some versions return a value, others return nothing. Some are
1881 declared to return a value and actually return nothing. Gdb ignores
1882 anything returned. (FIXME)
1887 procfs_store_registers (regno)
1890 struct procinfo *pi;
1891 #ifdef PROCFS_USE_READ_WRITE
1892 struct greg_ctl greg;
1893 struct fpreg_ctl fpreg;
1896 pi = current_procinfo;
1898 #ifdef PROCFS_USE_READ_WRITE
1901 procfs_read_status (pi);
1902 memcpy ((char *) &greg.gregset,
1903 (char *) &pi->prstatus.pr_lwp.pr_context.uc_mcontext.gregs,
1904 sizeof (gregset_t));
1906 fill_gregset (&greg.gregset, regno);
1908 write (pi->ctl_fd, &greg, sizeof (greg));
1909 #else /* PROCFS_USE_READ_WRITE */
1912 ioctl (pi->ctl_fd, PIOCGREG, &pi->gregset.gregset);
1914 fill_gregset (&pi->gregset.gregset, regno);
1915 ioctl (pi->ctl_fd, PIOCSREG, &pi->gregset.gregset);
1916 #endif /* PROCFS_USE_READ_WRITE */
1918 #if defined (FP0_REGNUM)
1920 /* Now repeat everything using the floating point register set, if the
1921 target has floating point hardware. Since we ignore the returned value,
1922 we'll never know whether it worked or not anyway. */
1924 #ifdef PROCFS_USE_READ_WRITE
1927 procfs_read_status (pi);
1928 memcpy ((char *) &fpreg.fpregset,
1929 (char *) &pi->prstatus.pr_lwp.pr_context.uc_mcontext.fpregs,
1930 sizeof (fpregset_t));
1932 fill_fpregset (&fpreg.fpregset, regno);
1933 fpreg.cmd = PCSFPREG;
1934 write (pi->ctl_fd, &fpreg, sizeof (fpreg));
1935 #else /* PROCFS_USE_READ_WRITE */
1938 ioctl (pi->ctl_fd, PIOCGFPREG, &pi->fpregset.fpregset);
1940 fill_fpregset (&pi->fpregset.fpregset, regno);
1941 ioctl (pi->ctl_fd, PIOCSFPREG, &pi->fpregset.fpregset);
1942 #endif /* PROCFS_USE_READ_WRITE */
1944 #endif /* FP0_REGNUM */
1952 init_procinfo - setup a procinfo struct and connect it to a process
1956 struct procinfo * init_procinfo (int pid)
1960 Allocate a procinfo structure, open the /proc file and then set up the
1961 set of signals and faults that are to be traced. Returns a pointer to
1962 the new procinfo structure.
1966 If proc_init_failed ever gets called, control returns to the command
1967 processing loop via the standard error handling code.
1971 static struct procinfo *
1972 init_procinfo (pid, kill)
1976 struct procinfo *pi = (struct procinfo *)
1977 xmalloc (sizeof (struct procinfo));
1979 memset ((char *) pi, 0, sizeof (*pi));
1980 if (!open_proc_file (pid, pi, O_RDWR, 1))
1981 proc_init_failed (pi, "can't open process file", kill);
1983 /* open_proc_file may modify pid. */
1987 /* Add new process to process info list */
1989 pi->next = procinfo_list;
1992 add_fd (pi); /* Add to list for poll/select */
1994 /* Remember some things about the inferior that we will, or might, change
1995 so that we can restore them when we detach. */
1997 memcpy ((char *) &pi->saved_trace.sigset,
1998 (char *) &pi->prstatus.pr_sigtrace, sizeof (sigset_t));
1999 memcpy ((char *) &pi->saved_fltset.fltset,
2000 (char *) &pi->prstatus.pr_flttrace, sizeof (fltset_t));
2001 memcpy ((char *) &pi->saved_entryset.sysset,
2002 (char *) &pi->prstatus.pr_sysentry, sizeof (sysset_t));
2003 memcpy ((char *) &pi->saved_exitset.sysset,
2004 (char *) &pi->prstatus.pr_sysexit, sizeof (sysset_t));
2006 /* Set up trace and fault sets, as gdb expects them. */
2008 prfillset (&sctl.sigset);
2009 notice_signals (pi, &sctl);
2010 prfillset (&fctl.fltset);
2011 prdelset (&fctl.fltset, FLTPAGE);
2013 #else /* ! UNIXWARE */
2014 ioctl (pi->ctl_fd, PIOCGTRACE, &pi->saved_trace.sigset);
2015 ioctl (pi->ctl_fd, PIOCGHOLD, &pi->saved_sighold.sigset);
2016 ioctl (pi->ctl_fd, PIOCGFAULT, &pi->saved_fltset.fltset);
2017 ioctl (pi->ctl_fd, PIOCGENTRY, &pi->saved_entryset.sysset);
2018 ioctl (pi->ctl_fd, PIOCGEXIT, &pi->saved_exitset.sysset);
2020 /* Set up trace and fault sets, as gdb expects them. */
2022 memset ((char *) &pi->prrun, 0, sizeof (pi->prrun));
2023 prfillset (&pi->prrun.pr_trace);
2024 procfs_notice_signals (pid);
2025 prfillset (&pi->prrun.pr_fault);
2026 prdelset (&pi->prrun.pr_fault, FLTPAGE);
2027 #ifdef PROCFS_DONT_TRACE_FAULTS
2028 premptyset (&pi->prrun.pr_fault);
2030 #endif /* UNIXWARE */
2032 if (!procfs_read_status (pi))
2033 proc_init_failed (pi, "procfs_read_status failed", kill);
2042 create_procinfo - initialize access to a /proc entry
2046 struct procinfo * create_procinfo (int pid)
2050 Allocate a procinfo structure, open the /proc file and then set up the
2051 set of signals and faults that are to be traced. Returns a pointer to
2052 the new procinfo structure.
2056 If proc_init_failed ever gets called, control returns to the command
2057 processing loop via the standard error handling code.
2061 static struct procinfo *
2062 create_procinfo (pid)
2065 struct procinfo *pi;
2066 struct sig_ctl sctl;
2067 struct flt_ctl fctl;
2069 pi = find_procinfo (pid, 1);
2071 return pi; /* All done! It already exists */
2073 pi = init_procinfo (pid, 1);
2076 /* A bug in Solaris (2.5 at least) causes PIOCWSTOP to hang on LWPs that are
2077 already stopped, even if they all have PR_ASYNC set. */
2078 if (!(pi->prstatus.pr_flags & PR_STOPPED))
2080 if (!procfs_write_pcwstop (pi))
2081 proc_init_failed (pi, "procfs_write_pcwstop failed", 1);
2083 #ifdef PROCFS_USE_READ_WRITE
2084 fctl.cmd = PCSFAULT;
2085 if (write (pi->ctl_fd, (char *) &fctl, sizeof (struct flt_ctl)) < 0)
2086 proc_init_failed (pi, "PCSFAULT failed", 1);
2088 if (ioctl (pi->ctl_fd, PIOCSFAULT, &pi->prrun.pr_fault) < 0)
2089 proc_init_failed (pi, "PIOCSFAULT failed", 1);
2099 procfs_exit_handler - handle entry into the _exit syscall
2103 int procfs_exit_handler (pi, syscall_num, why, rtnvalp, statvalp)
2107 This routine is called when an inferior process enters the _exit()
2108 system call. It continues the process, and then collects the exit
2109 status and pid which are returned in *statvalp and *rtnvalp. After
2110 that it returns non-zero to indicate that procfs_wait should wake up.
2113 There is probably a better way to do this.
2118 procfs_exit_handler (pi, syscall_num, why, rtnvalp, statvalp)
2119 struct procinfo *pi;
2125 struct procinfo *temp_pi, *next_pi;
2127 pi->prrun.pr_flags = PRCFAULT;
2129 if (ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0)
2130 perror_with_name (pi->pathname);
2134 /* Claim it exited (don't call wait). */
2136 printf_filtered ("(attached process has exited)\n");
2138 *rtnvalp = inferior_pid;
2142 *rtnvalp = wait (statvalp);
2147 /* Close ALL open proc file handles,
2148 except the one that called SYS_exit. */
2149 for (temp_pi = procinfo_list; temp_pi; temp_pi = next_pi)
2151 next_pi = temp_pi->next;
2153 continue; /* Handled below */
2154 close_proc_file (temp_pi);
2163 procfs_exec_handler - handle exit from the exec family of syscalls
2167 int procfs_exec_handler (pi, syscall_num, why, rtnvalp, statvalp)
2171 This routine is called when an inferior process is about to finish any
2172 of the exec() family of system calls. It pretends that we got a
2173 SIGTRAP (for compatibility with ptrace behavior), and returns non-zero
2174 to tell procfs_wait to wake up.
2177 This need for compatibility with ptrace is questionable. In the
2178 future, it shouldn't be necessary.
2183 procfs_exec_handler (pi, syscall_num, why, rtnvalp, statvalp)
2184 struct procinfo *pi;
2190 *statvalp = (SIGTRAP << 8) | 0177;
2195 #if defined(SYS_sproc) && !defined(UNIXWARE)
2196 /* IRIX lwp creation system call */
2202 procfs_sproc_handler - handle exit from the sproc syscall
2206 int procfs_sproc_handler (pi, syscall_num, why, rtnvalp, statvalp)
2210 This routine is called when an inferior process is about to finish an
2211 sproc() system call. This is the system call that IRIX uses to create
2212 a lightweight process. When the target process gets this event, we can
2213 look at rval1 to find the new child processes ID, and create a new
2214 procinfo struct from that.
2216 After that, it pretends that we got a SIGTRAP, and returns non-zero
2217 to tell procfs_wait to wake up. Subsequently, wait_for_inferior gets
2218 woken up, sees the new process and continues it.
2221 We actually never see the child exiting from sproc because we will
2222 shortly stop the child with PIOCSTOP, which is then registered as the
2227 procfs_sproc_handler (pi, syscall_num, why, rtnvalp, statvalp)
2228 struct procinfo *pi;
2234 /* We've just detected the completion of an sproc system call. Now we need to
2235 setup a procinfo struct for this thread, and notify the thread system of the
2238 /* If sproc failed, then nothing interesting happened. Continue the process
2239 and go back to sleep. */
2241 if (pi->prstatus.pr_errno != 0)
2243 pi->prrun.pr_flags &= PRSTEP;
2244 pi->prrun.pr_flags |= PRCFAULT;
2246 if (ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0)
2247 perror_with_name (pi->pathname);
2252 /* At this point, the new thread is stopped at it's first instruction, and
2253 the parent is stopped at the exit from sproc. */
2255 /* Notify the caller of the arrival of a new thread. */
2256 create_procinfo (pi->prstatus.pr_rval1);
2258 *rtnvalp = pi->prstatus.pr_rval1;
2259 *statvalp = (SIGTRAP << 8) | 0177;
2268 procfs_fork_handler - handle exit from the fork syscall
2272 int procfs_fork_handler (pi, syscall_num, why, rtnvalp, statvalp)
2276 This routine is called when an inferior process is about to finish a
2277 fork() system call. We will open up the new process, and then close
2278 it, which releases it from the clutches of the debugger.
2280 After that, we continue the target process as though nothing had
2284 This is necessary for IRIX because we have to set PR_FORK in order
2285 to catch the creation of lwps (via sproc()). When an actual fork
2286 occurs, it becomes necessary to reset the forks debugger flags and
2287 continue it because we can't hack multiple processes yet.
2291 procfs_fork_handler (pi, syscall_num, why, rtnvalp, statvalp)
2292 struct procinfo *pi;
2298 struct procinfo *pitemp;
2300 /* At this point, we've detected the completion of a fork (or vfork) call in
2301 our child. The grandchild is also stopped because we set inherit-on-fork
2302 earlier. (Note that nobody has the grandchilds' /proc file open at this
2303 point.) We will release the grandchild from the debugger by opening it's
2304 /proc file and then closing it. Since run-on-last-close is set, the
2305 grandchild continues on its' merry way. */
2308 pitemp = create_procinfo (pi->prstatus.pr_rval1);
2310 close_proc_file (pitemp);
2312 if (ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0)
2313 perror_with_name (pi->pathname);
2317 #endif /* SYS_sproc && !UNIXWARE */
2323 procfs_set_inferior_syscall_traps - setup the syscall traps
2327 void procfs_set_inferior_syscall_traps (struct procinfo *pip)
2331 Called for each "procinfo" (process, thread, or LWP) in the
2332 inferior, to register for notification of and handlers for
2333 syscall traps in the inferior.
2338 procfs_set_inferior_syscall_traps (pip)
2339 struct procinfo *pip;
2341 procfs_set_syscall_trap (pip, SYS_exit, PROCFS_SYSCALL_ENTRY,
2342 procfs_exit_handler);
2344 #ifndef PRFS_STOPEXEC
2346 procfs_set_syscall_trap (pip, SYS_exec, PROCFS_SYSCALL_EXIT,
2347 procfs_exec_handler);
2350 procfs_set_syscall_trap (pip, SYS_execv, PROCFS_SYSCALL_EXIT,
2351 procfs_exec_handler);
2354 procfs_set_syscall_trap (pip, SYS_execve, PROCFS_SYSCALL_EXIT,
2355 procfs_exec_handler);
2357 #endif /* PRFS_STOPEXEC */
2359 /* Setup traps on exit from sproc() */
2362 procfs_set_syscall_trap (pip, SYS_sproc, PROCFS_SYSCALL_EXIT,
2363 procfs_sproc_handler);
2364 procfs_set_syscall_trap (pip, SYS_fork, PROCFS_SYSCALL_EXIT,
2365 procfs_fork_handler);
2367 procfs_set_syscall_trap (pip, SYS_vfork, PROCFS_SYSCALL_EXIT,
2368 procfs_fork_handler);
2370 /* Turn on inherit-on-fork flag so that all children of the target process
2371 start with tracing flags set. This allows us to trap lwp creation. Note
2372 that we also have to trap on fork and vfork in order to disable all tracing
2373 in the targets child processes. */
2375 modify_inherit_on_fork_flag (pip->ctl_fd, 1);
2378 #ifdef SYS_lwp_create
2379 procfs_set_syscall_trap (pip, SYS_lwp_create, PROCFS_SYSCALL_EXIT,
2380 procfs_lwp_creation_handler);
2388 procfs_init_inferior - initialize target vector and access to a
2393 int procfs_init_inferior (int pid)
2397 When gdb starts an inferior, this function is called in the parent
2398 process immediately after the fork. It waits for the child to stop
2399 on the return from the exec system call (the child itself takes care
2400 of ensuring that this is set up), then sets up the set of signals
2401 and faults that are to be traced. Returns the pid, which may have had
2402 the thread-id added to it.
2406 If proc_init_failed ever gets called, control returns to the command
2407 processing loop via the standard error handling code.
2412 procfs_init_inferior (pid)
2415 struct procinfo *pip;
2417 push_target (&procfs_ops);
2419 pip = create_procinfo (pid);
2421 procfs_set_inferior_syscall_traps (pip);
2423 /* create_procinfo may change the pid, so we have to update inferior_pid
2424 here before calling other gdb routines that need the right pid. */
2429 add_thread (pip -> pid); /* Setup initial thread */
2431 #ifdef START_INFERIOR_TRAPS_EXPECTED
2432 startup_inferior (START_INFERIOR_TRAPS_EXPECTED);
2434 /* One trap to exec the shell, one to exec the program being debugged. */
2435 startup_inferior (2);
2445 procfs_notice_signals
2449 static void procfs_notice_signals (int pid);
2453 When the user changes the state of gdb's signal handling via the
2454 "handle" command, this function gets called to see if any change
2455 in the /proc interface is required. It is also called internally
2456 by other /proc interface functions to initialize the state of
2457 the traced signal set.
2459 One thing it does is that signals for which the state is "nostop",
2460 "noprint", and "pass", have their trace bits reset in the pr_trace
2461 field, so that they are no longer traced. This allows them to be
2462 delivered directly to the inferior without the debugger ever being
2467 procfs_notice_signals (pid)
2470 struct procinfo *pi;
2471 struct sig_ctl sctl;
2473 pi = find_procinfo (pid, 0);
2476 premptyset (&sctl.sigset);
2478 sctl.sigset = pi->prrun.pr_trace;
2481 notice_signals (pi, &sctl);
2484 pi->prrun.pr_trace = sctl.sigset;
2489 notice_signals (pi, sctl)
2490 struct procinfo *pi;
2491 struct sig_ctl *sctl;
2495 for (signo = 0; signo < NSIG; signo++)
2497 if (signal_stop_state (target_signal_from_host (signo)) == 0 &&
2498 signal_print_state (target_signal_from_host (signo)) == 0 &&
2499 signal_pass_state (target_signal_from_host (signo)) == 1)
2501 prdelset (&sctl->sigset, signo);
2505 praddset (&sctl->sigset, signo);
2508 #ifdef PROCFS_USE_READ_WRITE
2509 sctl->cmd = PCSTRACE;
2510 if (write (pi->ctl_fd, (char *) sctl, sizeof (struct sig_ctl)) < 0)
2512 if (ioctl (pi->ctl_fd, PIOCSTRACE, &sctl->sigset))
2515 print_sys_errmsg ("PIOCSTRACE failed", errno);
2523 proc_set_exec_trap -- arrange for exec'd child to halt at startup
2527 void proc_set_exec_trap (void)
2531 This function is called in the child process when starting up
2532 an inferior, prior to doing the exec of the actual inferior.
2533 It sets the child process's exitset to make exit from the exec
2534 system call an event of interest to stop on, and then simply
2535 returns. The child does the exec, the system call returns, and
2536 the child stops at the first instruction, ready for the gdb
2537 parent process to take control of it.
2541 We need to use all local variables since the child may be sharing
2542 it's data space with the parent, if vfork was used rather than
2545 Also note that we want to turn off the inherit-on-fork flag in
2546 the child process so that any grand-children start with all
2547 tracing flags cleared.
2551 proc_set_exec_trap ()
2553 struct sys_ctl exitset;
2554 struct sys_ctl entryset;
2555 char procname[MAX_PROC_NAME_SIZE];
2558 sprintf (procname, CTL_PROC_NAME_FMT, getpid ());
2560 if ((fd = open (procname, O_WRONLY)) < 0)
2562 if ((fd = open (procname, O_RDWR)) < 0)
2566 gdb_flush (gdb_stderr);
2569 premptyset (&exitset.sysset);
2570 premptyset (&entryset.sysset);
2572 #ifdef PRFS_STOPEXEC
2573 /* Under Alpha OSF/1 we have to use a PIOCSSPCACT ioctl to trace
2574 exits from exec system calls because of the user level loader. */
2578 if (ioctl (fd, PIOCGSPCACT, &prfs_flags) < 0)
2581 gdb_flush (gdb_stderr);
2584 prfs_flags |= PRFS_STOPEXEC;
2585 if (ioctl (fd, PIOCSSPCACT, &prfs_flags) < 0)
2588 gdb_flush (gdb_stderr);
2592 #else /* PRFS_STOPEXEC */
2594 Not all systems with /proc have all the exec* syscalls with the same
2595 names. On the SGI, for example, there is no SYS_exec, but there
2596 *is* a SYS_execv. So, we try to account for that. */
2599 praddset (&exitset.sysset, SYS_exec);
2602 praddset (&exitset.sysset, SYS_execve);
2605 praddset (&exitset.sysset, SYS_execv);
2608 #ifdef PROCFS_USE_READ_WRITE
2609 exitset.cmd = PCSEXIT;
2610 if (write (fd, (char *) &exitset, sizeof (struct sys_ctl)) < 0)
2612 if (ioctl (fd, PIOCSEXIT, &exitset.sysset) < 0)
2616 gdb_flush (gdb_stderr);
2619 #endif /* PRFS_STOPEXEC */
2621 praddset (&entryset.sysset, SYS_exit);
2623 #ifdef PROCFS_USE_READ_WRITE
2624 entryset.cmd = PCSENTRY;
2625 if (write (fd, (char *) &entryset, sizeof (struct sys_ctl)) < 0)
2627 if (ioctl (fd, PIOCSENTRY, &entryset.sysset) < 0)
2631 gdb_flush (gdb_stderr);
2635 /* Turn off inherit-on-fork flag so that all grand-children of gdb
2636 start with tracing flags cleared. */
2638 modify_inherit_on_fork_flag (fd, 0);
2640 /* Turn on run-on-last-close flag so that this process will not hang
2641 if GDB goes away for some reason. */
2643 modify_run_on_last_close_flag (fd, 1);
2648 struct proc_ctl pctl;
2650 /* Solaris needs this to make procfs treat all threads seperately. Without
2651 this, all threads halt whenever something happens to any thread. Since
2652 GDB wants to control all this itself, it needs to set PR_ASYNC. */
2654 pr_flags = PR_ASYNC;
2655 #ifdef PROCFS_USE_READ_WRITE
2657 pctl.data = PR_FORK|PR_ASYNC;
2658 write (fd, (char *) &pctl, sizeof (struct proc_ctl));
2660 ioctl (fd, PIOCSET, &pr_flags);
2663 #endif /* PR_ASYNC */
2670 proc_iterate_over_mappings -- call function for every mapped space
2674 int proc_iterate_over_mappings (int (*func)())
2678 Given a pointer to a function, call that function for every
2679 mapped address space, passing it an open file descriptor for
2680 the file corresponding to that mapped address space (if any)
2681 and the base address of the mapped space. Quit when we hit
2682 the end of the mappings or the function returns nonzero.
2687 proc_iterate_over_mappings (func)
2688 int (*func) PARAMS ((int, CORE_ADDR));
2695 struct procinfo *pi;
2698 pi = current_procinfo;
2700 if (fstat (pi->map_fd, &sbuf) < 0)
2703 nmap = sbuf.st_size / sizeof (prmap_t);
2704 prmaps = (prmap_t *) alloca (nmap * sizeof(prmap_t));
2705 if ((lseek (pi->map_fd, 0, SEEK_SET) == 0) &&
2706 (read (pi->map_fd, (char *) prmaps, nmap * sizeof (prmap_t)) ==
2707 (nmap * sizeof (prmap_t))))
2710 for (prmap = prmaps; i < nmap && funcstat == 0; ++prmap, ++i)
2712 char name[sizeof ("/proc/1234567890/object") +
2713 sizeof (prmap->pr_mapname)];
2714 sprintf (name, "/proc/%d/object/%s", pi->pid, prmap->pr_mapname);
2715 if ((fd = open (name, O_RDONLY)) == -1)
2720 funcstat = (*func) (fd, (CORE_ADDR) prmap->pr_vaddr);
2726 #else /* UNIXWARE */
2728 proc_iterate_over_mappings (func)
2729 int (*func) PARAMS ((int, CORE_ADDR));
2734 struct prmap *prmaps;
2735 struct prmap *prmap;
2736 struct procinfo *pi;
2738 pi = current_procinfo;
2740 if (ioctl (pi->map_fd, PIOCNMAP, &nmap) == 0)
2742 prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps));
2743 if (ioctl (pi->map_fd, PIOCMAP, prmaps) == 0)
2745 for (prmap = prmaps; prmap -> pr_size && funcstat == 0; ++prmap)
2747 fd = proc_address_to_fd (pi, (CORE_ADDR) prmap -> pr_vaddr, 0);
2748 funcstat = (*func) (fd, (CORE_ADDR) prmap -> pr_vaddr);
2755 #endif /* UNIXWARE */
2757 #if 0 /* Currently unused */
2762 proc_base_address -- find base address for segment containing address
2766 CORE_ADDR proc_base_address (CORE_ADDR addr)
2770 Given an address of a location in the inferior, find and return
2771 the base address of the mapped segment containing that address.
2773 This is used for example, by the shared library support code,
2774 where we have the pc value for some location in the shared library
2775 where we are stopped, and need to know the base address of the
2776 segment containing that address.
2780 proc_base_address (addr)
2784 struct prmap *prmaps;
2785 struct prmap *prmap;
2786 CORE_ADDR baseaddr = 0;
2787 struct procinfo *pi;
2789 pi = current_procinfo;
2791 if (ioctl (pi->map_fd, PIOCNMAP, &nmap) == 0)
2793 prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps));
2794 if (ioctl (pi->map_fd, PIOCMAP, prmaps) == 0)
2796 for (prmap = prmaps; prmap -> pr_size; ++prmap)
2798 if ((prmap -> pr_vaddr <= (caddr_t) addr) &&
2799 (prmap -> pr_vaddr + prmap -> pr_size > (caddr_t) addr))
2801 baseaddr = (CORE_ADDR) prmap -> pr_vaddr;
2816 proc_address_to_fd -- return open fd for file mapped to address
2820 int proc_address_to_fd (struct procinfo *pi, CORE_ADDR addr, complain)
2824 Given an address in the current inferior's address space, use the
2825 /proc interface to find an open file descriptor for the file that
2826 this address was mapped in from. Return -1 if there is no current
2827 inferior. Print a warning message if there is an inferior but
2828 the address corresponds to no file (IE a bogus address).
2833 proc_address_to_fd (pi, addr, complain)
2834 struct procinfo *pi;
2840 if ((fd = ioctl (pi->ctl_fd, PIOCOPENM, (caddr_t *) &addr)) < 0)
2844 print_sys_errmsg (pi->pathname, errno);
2845 warning ("can't find mapped file for address 0x%x", addr);
2852 /* Attach to process PID, then initialize for debugging it
2853 and wait for the trace-trap that results from attaching. */
2856 procfs_attach (args, from_tty)
2864 error_no_arg ("process-id to attach");
2868 if (pid == getpid()) /* Trying to masturbate? */
2869 error ("I refuse to debug myself!");
2873 exec_file = (char *) get_exec_file (0);
2876 printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, target_pid_to_str (pid));
2878 printf_unfiltered ("Attaching to %s\n", target_pid_to_str (pid));
2880 gdb_flush (gdb_stdout);
2883 inferior_pid = pid = do_attach (pid);
2884 push_target (&procfs_ops);
2888 /* Take a program previously attached to and detaches it.
2889 The program resumes execution and will no longer stop
2890 on signals, etc. We'd better not have left any breakpoints
2891 in the program or it'll die when it hits one. For this
2892 to work, it may be necessary for the process to have been
2893 previously attached. It *might* work if the program was
2894 started via the normal ptrace (PTRACE_TRACEME). */
2897 procfs_detach (args, from_tty)
2905 char *exec_file = get_exec_file (0);
2908 printf_unfiltered ("Detaching from program: %s %s\n",
2909 exec_file, target_pid_to_str (inferior_pid));
2910 gdb_flush (gdb_stdout);
2913 siggnal = atoi (args);
2915 do_detach (siggnal);
2917 unpush_target (&procfs_ops); /* Pop out of handling an inferior */
2920 /* Get ready to modify the registers array. On machines which store
2921 individual registers, this doesn't need to do anything. On machines
2922 which store all the registers in one fell swoop, this makes sure
2923 that registers contains all the registers from the program being
2927 procfs_prepare_to_store ()
2929 #ifdef CHILD_PREPARE_TO_STORE
2930 CHILD_PREPARE_TO_STORE ();
2934 /* Print status information about what we're accessing. */
2937 procfs_files_info (ignore)
2938 struct target_ops *ignore;
2940 printf_unfiltered ("\tUsing the running image of %s %s via /proc.\n",
2941 attach_flag? "attached": "child", target_pid_to_str (inferior_pid));
2946 procfs_open (arg, from_tty)
2950 error ("Use the \"run\" command to start a Unix child process.");
2957 do_attach -- attach to an already existing process
2961 int do_attach (int pid)
2965 Attach to an already existing process with the specified process
2966 id. If the process is not already stopped, query whether to
2971 The option of stopping at attach time is specific to the /proc
2972 versions of gdb. Versions using ptrace force the attachee
2973 to stop. (I have changed this version to do so, too. All you
2982 struct procinfo *pi;
2983 struct sig_ctl sctl;
2984 struct flt_ctl fctl;
2987 pi = init_procinfo (pid, 0);
2990 nlwp = pi->prstatus.pr_nlwp;
2991 lwps = alloca ((2 * nlwp + 2) * sizeof (id_t));
2993 if (ioctl (pi->ctl_fd, PIOCLWPIDS, lwps))
2995 print_sys_errmsg (pi -> pathname, errno);
2996 error ("PIOCLWPIDS failed");
2998 #else /* PIOCLWPIDS */
3000 lwps = alloca ((2 * nlwp + 2) * sizeof *lwps);
3003 for (; nlwp > 0; nlwp--, lwps++)
3005 /* First one has already been created above. */
3006 if ((pi = find_procinfo ((*lwps << 16) | pid, 1)) == 0)
3007 pi = init_procinfo ((*lwps << 16) | pid, 0);
3010 if (pi->prstatus.pr_lwp.pr_flags & (PR_STOPPED | PR_ISTOP))
3012 if (pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP))
3015 pi->was_stopped = 1;
3019 pi->was_stopped = 0;
3020 if (1 || query ("Process is currently running, stop it? "))
3023 /* Make it run again when we close it. */
3024 modify_run_on_last_close_flag (pi->ctl_fd, 1);
3025 #ifdef PROCFS_USE_READ_WRITE
3027 if (write (pi->ctl_fd, (char *) &cmd, sizeof (long)) < 0)
3029 if (ioctl (pi->ctl_fd, PIOCSTOP, &pi->prstatus) < 0)
3032 print_sys_errmsg (pi->pathname, errno);
3033 close_proc_file (pi);
3034 error ("PIOCSTOP failed");
3037 if (!procfs_read_status (pi))
3039 print_sys_errmsg (pi->pathname, errno);
3040 close_proc_file (pi);
3041 error ("procfs_read_status failed");
3044 pi->nopass_next_sigstop = 1;
3048 printf_unfiltered ("Ok, gdb will wait for %s to stop.\n",
3049 target_pid_to_str (pi->pid));
3053 #ifdef PROCFS_USE_READ_WRITE
3054 fctl.cmd = PCSFAULT;
3055 if (write (pi->ctl_fd, (char *) &fctl, sizeof (struct flt_ctl)) < 0)
3056 print_sys_errmsg ("PCSFAULT failed", errno);
3057 #else /* PROCFS_USE_READ_WRITE */
3058 if (ioctl (pi->ctl_fd, PIOCSFAULT, &pi->prrun.pr_fault))
3060 print_sys_errmsg ("PIOCSFAULT failed", errno);
3062 if (ioctl (pi->ctl_fd, PIOCSTRACE, &pi->prrun.pr_trace))
3064 print_sys_errmsg ("PIOCSTRACE failed", errno);
3066 add_thread (pi->pid);
3067 procfs_set_inferior_syscall_traps (pi);
3069 #endif /* PROCFS_USE_READ_WRITE */
3078 do_detach -- detach from an attached-to process
3082 void do_detach (int signal)
3086 Detach from the current attachee.
3088 If signal is non-zero, the attachee is started running again and sent
3089 the specified signal.
3091 If signal is zero and the attachee was not already stopped when we
3092 attached to it, then we make it runnable again when we detach.
3094 Otherwise, we query whether or not to make the attachee runnable
3095 again, since we may simply want to leave it in the state it was in
3098 We report any problems, but do not consider them errors, since we
3099 MUST detach even if some things don't seem to go right. This may not
3100 be the ideal situation. (FIXME).
3107 struct procinfo *pi;
3109 for (pi = procinfo_list; pi; pi = pi->next)
3113 set_proc_siginfo (pi, signal);
3115 #ifdef PROCFS_USE_READ_WRITE
3116 pi->saved_exitset.cmd = PCSEXIT;
3117 if (write (pi->ctl_fd, (char *) &pi->saved_exitset,
3118 sizeof (struct sys_ctl)) < 0)
3120 if (ioctl (pi->ctl_fd, PIOCSEXIT, &pi->saved_exitset.sysset) < 0)
3123 print_sys_errmsg (pi->pathname, errno);
3124 printf_unfiltered ("PIOCSEXIT failed.\n");
3126 #ifdef PROCFS_USE_READ_WRITE
3127 pi->saved_entryset.cmd = PCSENTRY;
3128 if (write (pi->ctl_fd, (char *) &pi->saved_entryset,
3129 sizeof (struct sys_ctl)) < 0)
3131 if (ioctl (pi->ctl_fd, PIOCSENTRY, &pi->saved_entryset.sysset) < 0)
3134 print_sys_errmsg (pi->pathname, errno);
3135 printf_unfiltered ("PIOCSENTRY failed.\n");
3137 #ifdef PROCFS_USE_READ_WRITE
3138 pi->saved_trace.cmd = PCSTRACE;
3139 if (write (pi->ctl_fd, (char *) &pi->saved_trace,
3140 sizeof (struct sig_ctl)) < 0)
3142 if (ioctl (pi->ctl_fd, PIOCSTRACE, &pi->saved_trace.sigset) < 0)
3145 print_sys_errmsg (pi->pathname, errno);
3146 printf_unfiltered ("PIOCSTRACE failed.\n");
3149 if (ioctl (pi->ctl_fd, PIOCSHOLD, &pi->saved_sighold.sigset) < 0)
3151 print_sys_errmsg (pi->pathname, errno);
3152 printf_unfiltered ("PIOSCHOLD failed.\n");
3155 #ifdef PROCFS_USE_READ_WRITE
3156 pi->saved_fltset.cmd = PCSFAULT;
3157 if (write (pi->ctl_fd, (char *) &pi->saved_fltset,
3158 sizeof (struct flt_ctl)) < 0)
3160 if (ioctl (pi->ctl_fd, PIOCSFAULT, &pi->saved_fltset.fltset) < 0)
3163 print_sys_errmsg (pi->pathname, errno);
3164 printf_unfiltered ("PIOCSFAULT failed.\n");
3166 if (!procfs_read_status (pi))
3168 print_sys_errmsg (pi->pathname, errno);
3169 printf_unfiltered ("procfs_read_status failed.\n");
3174 if (signal || (pi->prstatus.pr_lwp.pr_flags & (PR_STOPPED | PR_ISTOP)))
3176 if (signal || (pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP)))
3180 struct proc_ctl pctl;
3182 if (signal || !pi->was_stopped ||
3183 query ("Was stopped when attached, make it runnable again? "))
3185 /* Clear any pending signal if we want to detach without
3188 set_proc_siginfo (pi, signal);
3190 /* Clear any fault that might have stopped it. */
3191 #ifdef PROCFS_USE_READ_WRITE
3193 if (write (pi->ctl_fd, (char *) &cmd, sizeof (long)) < 0)
3195 if (ioctl (pi->ctl_fd, PIOCCFAULT, 0))
3198 print_sys_errmsg (pi->pathname, errno);
3199 printf_unfiltered ("PIOCCFAULT failed.\n");
3202 /* Make it run again when we close it. */
3204 modify_run_on_last_close_flag (pi->ctl_fd, 1);
3208 close_proc_file (pi);
3213 /* emulate wait() as much as possible.
3214 Wait for child to do something. Return pid of child, or -1 in case
3215 of error; store status in *OURSTATUS.
3217 Not sure why we can't
3218 just use wait(), but it seems to have problems when applied to a
3219 process being controlled with the /proc interface.
3221 We have a race problem here with no obvious solution. We need to let
3222 the inferior run until it stops on an event of interest, which means
3223 that we need to use the PIOCWSTOP ioctl. However, we cannot use this
3224 ioctl if the process is already stopped on something that is not an
3225 event of interest, or the call will hang indefinitely. Thus we first
3226 use PIOCSTATUS to see if the process is not stopped. If not, then we
3227 use PIOCWSTOP. But during the window between the two, if the process
3228 stops for any reason that is not an event of interest (such as a job
3229 control signal) then gdb will hang. One possible workaround is to set
3230 an alarm to wake up every minute of so and check to see if the process
3231 is still running, and if so, then reissue the PIOCWSTOP. But this is
3232 a real kludge, so has not been implemented. FIXME: investigate
3235 FIXME: Investigate why wait() seems to have problems with programs
3236 being control by /proc routines. */
3238 procfs_wait (pid, ourstatus)
3240 struct target_waitstatus *ourstatus;
3247 struct procinfo *pi;
3248 struct proc_ctl pctl;
3251 if (pid != -1) /* Non-specific process? */
3254 for (pi = procinfo_list; pi; pi = pi->next)
3269 for (pi = procinfo_list; pi; pi = pi->next)
3270 if (pi->pid == pid && pi->had_event)
3274 if (!pi && !checkerr)
3278 if (!checkerr && !(pi->prstatus.pr_lwp.pr_flags & (PR_STOPPED | PR_ISTOP)))
3280 if (!checkerr && !(pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP)))
3283 if (!procfs_write_pcwstop (pi))
3290 if (errno == ENOENT)
3292 /* XXX Fixme -- what to do if attached? Can't call wait... */
3293 rtnval = wait (&statval);
3294 if ((rtnval) != (inferior_pid))
3296 print_sys_errmsg (pi->pathname, errno);
3297 error ("procfs_wait: wait failed, returned %d", rtnval);
3303 print_sys_errmsg (pi->pathname, errno);
3304 error ("PIOCSTATUS or PIOCWSTOP failed.");
3308 else if (pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP))
3311 rtnval = pi->prstatus.pr_pid;
3312 why = pi->prstatus.pr_lwp.pr_why;
3313 what = pi->prstatus.pr_lwp.pr_what;
3316 why = pi->prstatus.pr_why;
3317 what = pi->prstatus.pr_what;
3323 statval = (what << 8) | 0177;
3329 int found_handler = 0;
3331 for (i = 0; i < pi->num_syscall_handlers; i++)
3332 if (pi->syscall_handlers[i].syscall_num == what)
3335 if (!pi->syscall_handlers[i].func (pi, what, why,
3343 if (why == PR_SYSENTRY)
3344 error ("PR_SYSENTRY, unhandled system call %d", what);
3346 error ("PR_SYSEXIT, unhandled system call %d", what);
3350 statval = (SIGSTOP << 8) | 0177;
3353 statval = (what << 8) | 0177;
3360 statval = (SIGTRAP << 8) | 0177;
3365 statval = (SIGTRAP << 8) | 0177;
3368 #ifndef FAULTED_USE_SIGINFO
3369 /* Irix, contrary to the documentation, fills in 0 for si_signo.
3370 Solaris fills in si_signo. I'm not sure about others. */
3373 statval = (SIGILL << 8) | 0177;
3377 statval = (SIGTRAP << 8) | 0177;
3382 statval = (SIGSEGV << 8) | 0177;
3387 statval = (SIGFPE << 8) | 0177;
3389 case FLTPAGE: /* Recoverable page fault */
3390 #endif /* not FAULTED_USE_SIGINFO */
3392 /* Use the signal which the kernel assigns. This is better than
3393 trying to second-guess it from the fault. In fact, I suspect
3394 that FLTACCESS can be either SIGSEGV or SIGBUS. */
3396 statval = ((pi->prstatus.pr_lwp.pr_info.si_signo) << 8) | 0177;
3398 statval = ((pi->prstatus.pr_info.si_signo) << 8) | 0177;
3404 error ("PIOCWSTOP, unknown why %d, what %d", why, what);
3406 /* Stop all the other threads when any of them stops. */
3409 struct procinfo *procinfo, *next_pi;
3411 for (procinfo = procinfo_list; procinfo; procinfo = next_pi)
3413 next_pi = procinfo->next;
3414 if (!procinfo->had_event)
3416 #ifdef PROCFS_USE_READ_WRITE
3418 if (write (pi->ctl_fd, (char *) &cmd, sizeof (long)) < 0)
3420 print_sys_errmsg (procinfo->pathname, errno);
3421 error ("PCSTOP failed");
3424 /* A bug in Solaris (2.5) causes us to hang when trying to
3425 stop a stopped process. So, we have to check first in
3426 order to avoid the hang. */
3427 if (!procfs_read_status (procinfo))
3429 /* The LWP has apparently terminated. */
3431 printf_filtered ("LWP %d doesn't respond.\n",
3432 (procinfo->pid >> 16) & 0xffff);
3433 close_proc_file (procinfo);
3437 if (!(procinfo->prstatus.pr_flags & PR_STOPPED))
3438 if (ioctl (procinfo->ctl_fd, PIOCSTOP, &procinfo->prstatus)
3441 print_sys_errmsg (procinfo->pathname, errno);
3442 warning ("PIOCSTOP failed");
3451 error ("PIOCWSTOP, stopped for unknown/unhandled reason, flags %#x",
3452 pi->prstatus.pr_flags);
3455 store_waitstatus (ourstatus, statval);
3457 if (rtnval == -1) /* No more children to wait for */
3459 warning ("Child process unexpectedly missing");
3460 /* Claim it exited with unknown signal. */
3461 ourstatus->kind = TARGET_WAITKIND_SIGNALLED;
3462 ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
3466 pi->had_event = 0; /* Indicate that we've seen this one */
3474 set_proc_siginfo - set a process's current signal info
3478 void set_proc_siginfo (struct procinfo *pip, int signo);
3482 Given a pointer to a process info struct in PIP and a signal number
3483 in SIGNO, set the process's current signal and its associated signal
3484 information. The signal will be delivered to the process immediately
3485 after execution is resumed, even if it is being held. In addition,
3486 this particular delivery will not cause another PR_SIGNALLED stop
3487 even if the signal is being traced.
3489 If we are not delivering the same signal that the prstatus siginfo
3490 struct contains information about, then synthesize a siginfo struct
3491 to match the signal we are doing to deliver, make it of the type
3492 "generated by a user process", and send this synthesized copy. When
3493 used to set the inferior's signal state, this will be required if we
3494 are not currently stopped because of a traced signal, or if we decide
3495 to continue with a different signal.
3497 Note that when continuing the inferior from a stop due to receipt
3498 of a traced signal, we either have set PRCSIG to clear the existing
3499 signal, or we have to call this function to do a PIOCSSIG with either
3500 the existing siginfo struct from pr_info, or one we have synthesized
3501 appropriately for the signal we want to deliver. Otherwise if the
3502 signal is still being traced, the inferior will immediately stop
3505 See siginfo(5) for more details.
3509 set_proc_siginfo (pip, signo)
3510 struct procinfo *pip;
3513 struct siginfo newsiginfo;
3514 struct siginfo *sip;
3515 struct sigi_ctl sictl;
3517 #ifdef PROCFS_DONT_PIOCSSIG_CURSIG
3518 /* With Alpha OSF/1 procfs, the kernel gets really confused if it
3519 receives a PIOCSSIG with a signal identical to the current signal,
3520 it messes up the current signal. Work around the kernel bug. */
3522 if (signo == pip -> prstatus.pr_lwp.pr_cursig)
3524 if (signo == pip -> prstatus.pr_cursig)
3530 if (signo == pip->prstatus.pr_lwp.pr_info.si_signo)
3532 memcpy ((char *) &sictl.siginfo, (char *) &pip->prstatus.pr_lwp.pr_info,
3533 sizeof (siginfo_t));
3536 if (signo == pip -> prstatus.pr_info.si_signo)
3538 sip = &pip -> prstatus.pr_info;
3544 siginfo_t *sip = &sictl.siginfo;
3545 memset ((char *) sip, 0, sizeof (siginfo_t));
3547 memset ((char *) &newsiginfo, 0, sizeof (newsiginfo));
3550 sip -> si_signo = signo;
3552 sip -> si_errno = 0;
3553 sip -> si_pid = getpid ();
3554 sip -> si_uid = getuid ();
3556 #ifdef PROCFS_USE_READ_WRITE
3558 if (write (pip->ctl_fd, (char *) &sictl, sizeof (struct sigi_ctl)) < 0)
3560 if (ioctl (pip->ctl_fd, PIOCSSIG, sip) < 0)
3563 print_sys_errmsg (pip -> pathname, errno);
3564 warning ("PIOCSSIG failed");
3568 /* Resume execution of process PID. If STEP is nozero, then
3569 just single step it. If SIGNAL is nonzero, restart it with that
3570 signal activated. */
3573 procfs_resume (pid, step, signo)
3576 enum target_signal signo;
3579 struct procinfo *pi, *procinfo, *next_pi;
3580 struct proc_ctl pctl;
3582 pi = find_procinfo (pid == -1 ? inferior_pid : pid, 0);
3587 pctl.data = PRCFAULT;
3589 pi->prrun.pr_flags = PRSTRACE | PRSFAULT | PRCFAULT;
3593 /* It should not be necessary. If the user explicitly changes the value,
3594 value_assign calls write_register_bytes, which writes it. */
3595 /* It may not be absolutely necessary to specify the PC value for
3596 restarting, but to be safe we use the value that gdb considers
3597 to be current. One case where this might be necessary is if the
3598 user explicitly changes the PC value that gdb considers to be
3599 current. FIXME: Investigate if this is necessary or not. */
3601 #ifdef PRSVADDR_BROKEN
3602 /* Can't do this under Solaris running on a Sparc, as there seems to be no
3603 place to put nPC. In fact, if you use this, nPC seems to be set to some
3604 random garbage. We have to rely on the fact that PC and nPC have been
3605 written previously via PIOCSREG during a register flush. */
3607 pi->prrun.pr_vaddr = (caddr_t) *(int *) ®isters[REGISTER_BYTE (PC_REGNUM)];
3608 pi->prrun.pr_flags != PRSVADDR;
3612 if (signo == TARGET_SIGNAL_STOP && pi->nopass_next_sigstop)
3613 /* When attaching to a child process, if we forced it to stop with
3614 a PIOCSTOP, then we will have set the nopass_next_sigstop flag.
3615 Upon resuming the first time after such a stop, we explicitly
3616 inhibit sending it another SIGSTOP, which would be the normal
3617 result of default signal handling. One potential drawback to
3618 this is that we will also ignore any attempt to by the user
3619 to explicitly continue after the attach with a SIGSTOP. Ultimately
3620 this problem should be dealt with by making the routines that
3621 deal with the inferior a little smarter, and possibly even allow
3622 an inferior to continue running at the same time as gdb. (FIXME?) */
3624 else if (signo == TARGET_SIGNAL_TSTP
3626 && pi->prstatus.pr_lwp.pr_cursig == SIGTSTP
3627 && pi->prstatus.pr_lwp.pr_action.sa_handler == SIG_DFL
3629 && pi->prstatus.pr_cursig == SIGTSTP
3630 && pi->prstatus.pr_action.sa_handler == SIG_DFL
3634 /* We are about to pass the inferior a SIGTSTP whose action is
3635 SIG_DFL. The SIG_DFL action for a SIGTSTP is to stop
3636 (notifying the parent via wait()), and then keep going from the
3637 same place when the parent is ready for you to keep going. So
3638 under the debugger, it should do nothing (as if the program had
3639 been stopped and then later resumed. Under ptrace, this
3640 happens for us, but under /proc, the system obligingly stops
3641 the process, and wait_for_inferior would have no way of
3642 distinguishing that type of stop (which indicates that we
3643 should just start it again), with a stop due to the pr_trace
3644 field of the prrun_t struct.
3646 Note that if the SIGTSTP is being caught, we *do* need to pass it,
3647 because the handler needs to get executed. */
3650 signal_to_pass = target_signal_to_host (signo);
3654 set_proc_siginfo (pi, signal_to_pass);
3659 pctl.data |= PRCSIG;
3661 pi->prrun.pr_flags |= PRCSIG;
3664 pi->nopass_next_sigstop = 0;
3668 pctl.data |= PRSTEP;
3670 pi->prrun.pr_flags |= PRSTEP;
3674 /* Don't try to start a process unless it's stopped on an
3675 `event of interest'. Doing so will cause errors. */
3677 if (!procfs_read_status (pi))
3679 /* The LWP has apparently terminated. */
3681 printf_filtered ("LWP %d doesn't respond.\n",
3682 (pi->pid >> 16) & 0xffff);
3683 close_proc_file (pi);
3687 #ifdef PROCFS_USE_READ_WRITE
3688 if (write (pi->ctl_fd, (char *) &pctl, sizeof (struct proc_ctl)) < 0)
3690 if ((pi->prstatus.pr_flags & PR_ISTOP)
3691 && ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0)
3694 /* The LWP has apparently terminated. */
3696 printf_filtered ("LWP %d doesn't respond.\n",
3697 (pi->pid >> 16) & 0xffff);
3698 close_proc_file (pi);
3702 /* Continue all the other threads that haven't had an event of interest.
3703 Also continue them if they have NOPASS_NEXT_SIGSTOP set; this is only
3704 set by do_attach, and means this is the first resume after an attach.
3705 All threads were CSTOP'd by do_attach, and should be resumed now. */
3708 for (procinfo = procinfo_list; procinfo; procinfo = next_pi)
3710 next_pi = procinfo->next;
3712 if (!procinfo->had_event ||
3713 (procinfo->nopass_next_sigstop && signo == TARGET_SIGNAL_STOP))
3715 procinfo->had_event = procinfo->nopass_next_sigstop = 0;
3716 #ifdef PROCFS_USE_READ_WRITE
3717 pctl.data = PRCFAULT | PRCSIG;
3718 if (write (procinfo->ctl_fd, (char *) &pctl,
3719 sizeof (struct proc_ctl)) < 0)
3721 if (!procfs_read_status (procinfo))
3722 fprintf_unfiltered(gdb_stderr,
3723 "procfs_read_status failed, errno=%d\n",
3725 print_sys_errmsg (procinfo->pathname, errno);
3726 error ("PCRUN failed");
3728 procfs_read_status (procinfo);
3730 procinfo->prrun.pr_flags &= PRSTEP;
3731 procinfo->prrun.pr_flags |= PRCFAULT | PRCSIG;
3732 if (!procfs_read_status (procinfo))
3734 /* The LWP has apparently terminated. */
3736 printf_filtered ("LWP %d doesn't respond.\n",
3737 (procinfo->pid >> 16) & 0xffff);
3738 close_proc_file (procinfo);
3742 /* Don't try to start a process unless it's stopped on an
3743 `event of interest'. Doing so will cause errors. */
3745 if ((procinfo->prstatus.pr_flags & PR_ISTOP)
3746 && ioctl (procinfo->ctl_fd, PIOCRUN, &procinfo->prrun) < 0)
3748 if (!procfs_read_status (procinfo))
3749 fprintf_unfiltered(gdb_stderr,
3750 "procfs_read_status failed, errno=%d\n",
3752 print_sys_errmsg (procinfo->pathname, errno);
3753 warning ("PIOCRUN failed");
3756 procfs_read_status (procinfo);
3765 procfs_fetch_registers -- fetch current registers from inferior
3769 void procfs_fetch_registers (int regno)
3773 Read the current values of the inferior's registers, both the
3774 general register set and floating point registers (if supported)
3775 and update gdb's idea of their current values.
3780 procfs_fetch_registers (regno)
3783 struct procinfo *pi;
3785 pi = current_procinfo;
3788 if (procfs_read_status (pi))
3790 supply_gregset (&pi->prstatus.pr_lwp.pr_context.uc_mcontext.gregs);
3791 #if defined (FP0_REGNUM)
3792 supply_fpregset (&pi->prstatus.pr_lwp.pr_context.uc_mcontext.fpregs);
3795 #else /* UNIXWARE */
3796 if (ioctl (pi->ctl_fd, PIOCGREG, &pi->gregset.gregset) != -1)
3798 supply_gregset (&pi->gregset.gregset);
3800 #if defined (FP0_REGNUM)
3801 if (ioctl (pi->ctl_fd, PIOCGFPREG, &pi->fpregset.fpregset) != -1)
3803 supply_fpregset (&pi->fpregset.fpregset);
3806 #endif /* UNIXWARE */
3813 proc_init_failed - called when /proc access initialization fails
3818 static void proc_init_failed (struct procinfo *pi,
3819 char *why, int kill_p)
3823 This function is called whenever initialization of access to a /proc
3824 entry fails. It prints a suitable error message, does some cleanup,
3825 and then invokes the standard error processing routine which dumps
3826 us back into the command loop. If KILL_P is true, sends SIGKILL.
3830 proc_init_failed (pi, why, kill_p)
3831 struct procinfo *pi;
3835 print_sys_errmsg (pi->pathname, errno);
3837 kill (pi->pid, SIGKILL);
3838 close_proc_file (pi);
3847 close_proc_file - close any currently open /proc entry
3851 static void close_proc_file (struct procinfo *pip)
3855 Close any currently open /proc entry and mark the process information
3856 entry as invalid. In order to ensure that we don't try to reuse any
3857 stale information, the pid, fd, and pathnames are explicitly
3858 invalidated, which may be overkill.
3863 close_proc_file (pip)
3864 struct procinfo *pip;
3866 struct procinfo *procinfo;
3868 delete_thread (pip->pid); /* remove thread from GDB's thread list */
3869 remove_fd (pip); /* Remove fd from poll/select list */
3871 close (pip->ctl_fd);
3872 #ifdef HAVE_MULTIPLE_PROC_FDS
3874 close (pip->status_fd);
3875 close (pip->map_fd);
3878 free (pip -> pathname);
3880 /* Unlink pip from the procinfo chain. Note pip might not be on the list. */
3882 if (procinfo_list == pip)
3883 procinfo_list = pip->next;
3886 for (procinfo = procinfo_list; procinfo; procinfo = procinfo->next)
3888 if (procinfo->next == pip)
3890 procinfo->next = pip->next;
3902 open_proc_file - open a /proc entry for a given process id
3906 static int open_proc_file (int pid, struct procinfo *pip, int mode)
3910 Given a process id and a mode, close the existing open /proc
3911 entry (if any) and open one for the new process id, in the
3912 specified mode. Once it is open, then mark the local process
3913 information structure as valid, which guarantees that the pid,
3914 fd, and pathname fields match an open /proc entry. Returns
3915 zero if the open fails, nonzero otherwise.
3917 Note that the pathname is left intact, even when the open fails,
3918 so that callers can use it to construct meaningful error messages
3919 rather than just "file open failed".
3921 Note that for Solaris, the process-id also includes an LWP-id, so we
3922 actually attempt to open that. If we are handed a pid with a 0 LWP-id,
3923 then we will ask the kernel what it is and add it to the pid. Hence,
3924 the pid can be changed by us.
3928 open_proc_file (pid, pip, mode, control)
3930 struct procinfo *pip;
3937 pip -> had_event = 0;
3938 pip -> pathname = xmalloc (MAX_PROC_NAME_SIZE);
3947 #ifdef HAVE_MULTIPLE_PROC_FDS
3948 sprintf (pip->pathname, STATUS_PROC_NAME_FMT, tmp);
3949 if ((pip->status_fd = open (pip->pathname, O_RDONLY)) < 0)
3954 sprintf (pip->pathname, AS_PROC_NAME_FMT, tmp);
3955 if ((pip->as_fd = open (pip->pathname, O_RDWR)) < 0)
3957 close (pip->status_fd);
3961 sprintf (pip->pathname, MAP_PROC_NAME_FMT, tmp);
3962 if ((pip->map_fd = open (pip->pathname, O_RDONLY)) < 0)
3964 close (pip->status_fd);
3969 sprintf (pip->pathname, MAP_PROC_NAME_FMT, tmp);
3970 if ((pip->map_fd = open (pip->pathname, O_RDONLY)) < 0)
3972 close (pip->status_fd);
3979 sprintf (pip->pathname, CTL_PROC_NAME_FMT, tmp);
3980 if ((pip->ctl_fd = open (pip->pathname, O_WRONLY)) < 0)
3982 close (pip->status_fd);
3984 close (pip->map_fd);
3989 #else /* HAVE_MULTIPLE_PROC_FDS */
3990 sprintf (pip -> pathname, CTL_PROC_NAME_FMT, tmp);
3992 if ((tmpfd = open (pip -> pathname, mode)) < 0)
3996 pip -> ctl_fd = tmpfd;
3997 pip -> as_fd = tmpfd;
3998 pip -> map_fd = tmpfd;
3999 pip -> status_fd = tmpfd;
4001 tmp = (pid >> 16) & 0xffff; /* Extract thread id */
4004 { /* Don't know thread id yet */
4005 if (ioctl (tmpfd, PIOCSTATUS, &pip -> prstatus) < 0)
4007 print_sys_errmsg (pip -> pathname, errno);
4009 error ("open_proc_file: PIOCSTATUS failed");
4012 tmp = pip -> prstatus.pr_who; /* Get thread id from prstatus_t */
4013 pip -> pid = (tmp << 16) | pid; /* Update pip */
4016 if ((pip -> ctl_fd = ioctl (tmpfd, PIOCOPENLWP, &tmp)) < 0)
4022 #ifdef PIOCSET /* New method */
4025 pr_flags = PR_ASYNC;
4026 ioctl (pip -> ctl_fd, PIOCSET, &pr_flags);
4030 /* keep extra fds in sync */
4031 pip->as_fd = pip->ctl_fd;
4032 pip->map_fd = pip->ctl_fd;
4033 pip->status_fd = pip->ctl_fd;
4035 close (tmpfd); /* All done with main pid */
4036 #endif /* PIOCOPENLWP */
4038 #endif /* HAVE_MULTIPLE_PROC_FDS */
4044 mappingflags (flags)
4047 static char asciiflags[8];
4049 strcpy (asciiflags, "-------");
4050 #if defined (MA_PHYS)
4051 if (flags & MA_PHYS) asciiflags[0] = 'd';
4053 if (flags & MA_STACK) asciiflags[1] = 's';
4054 if (flags & MA_BREAK) asciiflags[2] = 'b';
4055 if (flags & MA_SHARED) asciiflags[3] = 's';
4056 if (flags & MA_READ) asciiflags[4] = 'r';
4057 if (flags & MA_WRITE) asciiflags[5] = 'w';
4058 if (flags & MA_EXEC) asciiflags[6] = 'x';
4059 return (asciiflags);
4063 info_proc_flags (pip, summary)
4064 struct procinfo *pip;
4067 struct trans *transp;
4069 long flags = pip->prstatus.pr_flags | pip->prstatus.pr_lwp.pr_flags;
4071 long flags = pip->prstatus.pr_flags;
4074 printf_filtered ("%-32s", "Process status flags:");
4077 printf_filtered ("\n\n");
4079 for (transp = pr_flag_table; transp -> name != NULL; transp++)
4081 if (flags & transp -> value)
4085 printf_filtered ("%s ", transp -> name);
4089 printf_filtered ("\t%-16s %s.\n", transp -> name, transp -> desc);
4093 printf_filtered ("\n");
4097 info_proc_stop (pip, summary)
4098 struct procinfo *pip;
4101 struct trans *transp;
4106 why = pip -> prstatus.pr_lwp.pr_why;
4107 what = pip -> prstatus.pr_lwp.pr_what;
4109 why = pip -> prstatus.pr_why;
4110 what = pip -> prstatus.pr_what;
4114 if (pip -> prstatus.pr_lwp.pr_flags & PR_STOPPED)
4116 if (pip -> prstatus.pr_flags & PR_STOPPED)
4119 printf_filtered ("%-32s", "Reason for stopping:");
4122 printf_filtered ("\n\n");
4124 for (transp = pr_why_table; transp -> name != NULL; transp++)
4126 if (why == transp -> value)
4130 printf_filtered ("%s ", transp -> name);
4134 printf_filtered ("\t%-16s %s.\n",
4135 transp -> name, transp -> desc);
4141 /* Use the pr_why field to determine what the pr_what field means, and
4142 print more information. */
4147 /* pr_what is unused for this case */
4153 printf_filtered ("%s ", signalname (what));
4157 printf_filtered ("\t%-16s %s.\n", signalname (what),
4158 safe_strsignal (what));
4164 printf_filtered ("%s ", syscallname (what));
4168 printf_filtered ("\t%-16s %s.\n", syscallname (what),
4169 "Entered this system call");
4175 printf_filtered ("%s ", syscallname (what));
4179 printf_filtered ("\t%-16s %s.\n", syscallname (what),
4180 "Returned from this system call");
4186 printf_filtered ("%s ",
4187 lookupname (faults_table, what, "fault"));
4191 printf_filtered ("\t%-16s %s.\n",
4192 lookupname (faults_table, what, "fault"),
4193 lookupdesc (faults_table, what));
4197 printf_filtered ("\n");
4202 info_proc_siginfo (pip, summary)
4203 struct procinfo *pip;
4206 struct siginfo *sip;
4209 if ((pip -> prstatus.pr_lwp.pr_flags & PR_STOPPED) &&
4210 (pip -> prstatus.pr_lwp.pr_why == PR_SIGNALLED ||
4211 pip -> prstatus.pr_lwp.pr_why == PR_FAULTED))
4213 if ((pip -> prstatus.pr_flags & PR_STOPPED) &&
4214 (pip -> prstatus.pr_why == PR_SIGNALLED ||
4215 pip -> prstatus.pr_why == PR_FAULTED))
4218 printf_filtered ("%-32s", "Additional signal/fault info:");
4220 sip = &pip -> prstatus.pr_lwp.pr_info;
4222 sip = &pip -> prstatus.pr_info;
4226 printf_filtered ("%s ", signalname (sip -> si_signo));
4227 if (sip -> si_errno > 0)
4229 printf_filtered ("%s ", errnoname (sip -> si_errno));
4231 if (sip -> si_code <= 0)
4233 printf_filtered ("sent by %s, uid %d ",
4234 target_pid_to_str (sip -> si_pid),
4239 printf_filtered ("%s ", sigcodename (sip));
4240 if ((sip -> si_signo == SIGILL) ||
4241 (sip -> si_signo == SIGFPE) ||
4242 (sip -> si_signo == SIGSEGV) ||
4243 (sip -> si_signo == SIGBUS))
4245 printf_filtered ("addr=%#lx ",
4246 (unsigned long) sip -> si_addr);
4248 else if ((sip -> si_signo == SIGCHLD))
4250 printf_filtered ("child %s, status %u ",
4251 target_pid_to_str (sip -> si_pid),
4254 else if ((sip -> si_signo == SIGPOLL))
4256 printf_filtered ("band %u ", sip -> si_band);
4262 printf_filtered ("\n\n");
4263 printf_filtered ("\t%-16s %s.\n", signalname (sip -> si_signo),
4264 safe_strsignal (sip -> si_signo));
4265 if (sip -> si_errno > 0)
4267 printf_filtered ("\t%-16s %s.\n",
4268 errnoname (sip -> si_errno),
4269 safe_strerror (sip -> si_errno));
4271 if (sip -> si_code <= 0)
4273 printf_filtered ("\t%-16u %s\n", sip -> si_pid, /* XXX need target_pid_to_str() */
4274 "PID of process sending signal");
4275 printf_filtered ("\t%-16u %s\n", sip -> si_uid,
4276 "UID of process sending signal");
4280 printf_filtered ("\t%-16s %s.\n", sigcodename (sip),
4282 if ((sip -> si_signo == SIGILL) ||
4283 (sip -> si_signo == SIGFPE))
4285 printf_filtered ("\t%#-16lx %s.\n",
4286 (unsigned long) sip -> si_addr,
4287 "Address of faulting instruction");
4289 else if ((sip -> si_signo == SIGSEGV) ||
4290 (sip -> si_signo == SIGBUS))
4292 printf_filtered ("\t%#-16lx %s.\n",
4293 (unsigned long) sip -> si_addr,
4294 "Address of faulting memory reference");
4296 else if ((sip -> si_signo == SIGCHLD))
4298 printf_filtered ("\t%-16u %s.\n", sip -> si_pid, /* XXX need target_pid_to_str() */
4299 "Child process ID");
4300 printf_filtered ("\t%-16u %s.\n", sip -> si_status,
4301 "Child process exit value or signal");
4303 else if ((sip -> si_signo == SIGPOLL))
4305 printf_filtered ("\t%-16u %s.\n", sip -> si_band,
4306 "Band event for POLL_{IN,OUT,MSG}");
4310 printf_filtered ("\n");
4315 info_proc_syscalls (pip, summary)
4316 struct procinfo *pip;
4324 #if 0 /* FIXME: Needs to use gdb-wide configured info about system calls. */
4325 if (pip -> prstatus.pr_flags & PR_ASLEEP)
4327 int syscallnum = pip -> prstatus.pr_reg[R_D0];
4330 printf_filtered ("%-32s", "Sleeping in system call:");
4331 printf_filtered ("%s", syscallname (syscallnum));
4335 printf_filtered ("Sleeping in system call '%s'.\n",
4336 syscallname (syscallnum));
4342 if (ioctl (pip -> ctl_fd, PIOCGENTRY, &pip -> entryset) < 0)
4344 print_sys_errmsg (pip -> pathname, errno);
4345 error ("PIOCGENTRY failed");
4348 if (ioctl (pip -> ctl_fd, PIOCGEXIT, &pip -> exitset) < 0)
4350 print_sys_errmsg (pip -> pathname, errno);
4351 error ("PIOCGEXIT failed");
4355 printf_filtered ("System call tracing information:\n\n");
4357 printf_filtered ("\t%-12s %-8s %-8s\n",
4361 for (syscallnum = 0; syscallnum < MAX_SYSCALLS; syscallnum++)
4364 if (syscall_table[syscallnum] != NULL)
4365 printf_filtered ("\t%-12s ", syscall_table[syscallnum]);
4367 printf_filtered ("\t%-12d ", syscallnum);
4370 printf_filtered ("%-8s ",
4371 prismember (&pip->prstatus.pr_sysentry, syscallnum)
4373 printf_filtered ("%-8s ",
4374 prismember (&pip->prstatus.pr_sysexit, syscallnum)
4377 printf_filtered ("%-8s ",
4378 prismember (&pip -> entryset, syscallnum)
4380 printf_filtered ("%-8s ",
4381 prismember (&pip -> exitset, syscallnum)
4384 printf_filtered ("\n");
4386 printf_filtered ("\n");
4395 static char locbuf[32];
4397 name = strsigno (signo);
4400 sprintf (locbuf, "Signal %d", signo);
4404 sprintf (locbuf, "%s (%d)", name, signo);
4414 static char locbuf[32];
4416 name = strerrno (errnum);
4419 sprintf (locbuf, "Errno %d", errnum);
4423 sprintf (locbuf, "%s (%d)", name, errnum);
4429 info_proc_signals (pip, summary)
4430 struct procinfo *pip;
4437 #ifndef PROCFS_USE_READ_WRITE
4438 if (ioctl (pip -> ctl_fd, PIOCGTRACE, &pip -> trace) < 0)
4440 print_sys_errmsg (pip -> pathname, errno);
4441 error ("PIOCGTRACE failed");
4445 printf_filtered ("Disposition of signals:\n\n");
4446 printf_filtered ("\t%-15s %-8s %-8s %-8s %s\n\n",
4447 "Signal", "Trace", "Hold", "Pending", "Description");
4448 for (signo = 0; signo < NSIG; signo++)
4451 printf_filtered ("\t%-15s ", signalname (signo));
4453 printf_filtered ("%-8s ",
4454 prismember (&pip -> prstatus.pr_sigtrace, signo)
4456 printf_filtered ("%-8s ",
4457 prismember (&pip -> prstatus.pr_lwp.pr_context.uc_sigmask, signo)
4460 printf_filtered ("%-8s ",
4461 prismember (&pip -> trace, signo)
4463 printf_filtered ("%-8s ",
4464 prismember (&pip -> prstatus.pr_sighold, signo)
4469 if (prismember (&pip->prstatus.pr_sigpend, signo) ||
4470 prismember (&pip->prstatus.pr_lwp.pr_lwppend, signo))
4471 printf_filtered("%-8s ", "yes");
4473 printf_filtered("%-8s ", "no");
4474 #else /* UNIXWARE */
4475 #ifdef PROCFS_SIGPEND_OFFSET
4476 /* Alpha OSF/1 numbers the pending signals from 1. */
4477 printf_filtered ("%-8s ",
4478 (signo ? prismember (&pip -> prstatus.pr_sigpend,
4483 printf_filtered ("%-8s ",
4484 prismember (&pip -> prstatus.pr_sigpend, signo)
4487 #endif /* UNIXWARE */
4488 printf_filtered (" %s\n", safe_strsignal (signo));
4490 printf_filtered ("\n");
4495 info_proc_faults (pip, summary)
4496 struct procinfo *pip;
4499 struct trans *transp;
4504 if (ioctl (pip -> ctl_fd, PIOCGFAULT, &pip->fltset.fltset) < 0)
4506 print_sys_errmsg (pip -> pathname, errno);
4507 error ("PIOCGFAULT failed");
4511 printf_filtered ("Current traced hardware fault set:\n\n");
4512 printf_filtered ("\t%-12s %-8s\n", "Fault", "Trace");
4514 for (transp = faults_table; transp -> name != NULL; transp++)
4517 printf_filtered ("\t%-12s ", transp -> name);
4519 printf_filtered ("%-8s", prismember (&pip->prstatus.pr_flttrace, transp -> value)
4522 printf_filtered ("%-8s", prismember (&pip->fltset.fltset, transp -> value)
4525 printf_filtered ("\n");
4527 printf_filtered ("\n");
4532 info_proc_mappings (pip, summary)
4533 struct procinfo *pip;
4537 struct prmap *prmaps;
4538 struct prmap *prmap;
4543 printf_filtered ("Mapped address spaces:\n\n");
4544 #ifdef BFD_HOST_64_BIT
4545 printf_filtered (" %18s %18s %10s %10s %7s\n",
4547 printf_filtered ("\t%10s %10s %10s %10s %7s\n",
4554 #ifdef PROCFS_USE_READ_WRITE
4555 if (fstat (pip->map_fd, &sbuf) == 0)
4557 nmap = sbuf.st_size / sizeof (prmap_t);
4558 prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps));
4559 if ((lseek (pip->map_fd, 0, SEEK_SET) == 0) &&
4560 (read (pip->map_fd, (char *) prmaps,
4561 nmap * sizeof (*prmaps)) == (nmap * sizeof (*prmaps))))
4564 for (prmap = prmaps; i < nmap; ++prmap, ++i)
4566 if (ioctl (pip -> ctl_fd, PIOCNMAP, &nmap) == 0)
4568 prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps));
4569 if (ioctl (pip -> ctl_fd, PIOCMAP, prmaps) == 0)
4571 for (prmap = prmaps; prmap -> pr_size; ++prmap)
4572 #endif /* PROCFS_USE_READ_WRITE */
4574 #ifdef BFD_HOST_64_BIT
4575 printf_filtered (" %#18lx %#18lx %#10x %#10x %7s\n",
4577 printf_filtered ("\t%#10lx %#10lx %#10x %#10x %7s\n",
4579 (unsigned long)prmap -> pr_vaddr,
4580 (unsigned long)prmap -> pr_vaddr
4581 + prmap -> pr_size - 1,
4584 mappingflags (prmap -> pr_mflags));
4588 printf_filtered ("\n");
4596 info_proc -- implement the "info proc" command
4600 void info_proc (char *args, int from_tty)
4604 Implement gdb's "info proc" command by using the /proc interface
4605 to print status information about any currently running process.
4607 Examples of the use of "info proc" are:
4609 info proc (prints summary info for current inferior)
4610 info proc 123 (prints summary info for process with pid 123)
4611 info proc mappings (prints address mappings)
4612 info proc times (prints process/children times)
4613 info proc id (prints pid, ppid, gid, sid, etc)
4614 FIXME: i proc id not implemented.
4615 info proc status (prints general process state info)
4616 FIXME: i proc status not implemented.
4617 info proc signals (prints info about signal handling)
4618 info proc all (prints all info)
4623 info_proc (args, from_tty)
4628 struct procinfo *pip;
4629 struct cleanup *old_chain;
4645 old_chain = make_cleanup (null_cleanup, 0);
4647 /* Default to using the current inferior if no pid specified. Note
4648 that inferior_pid may be 0, hence we set okerr. */
4650 pid = inferior_pid & 0x7fffffff; /* strip off sol-thread bit */
4651 if (!(pip = find_procinfo (pid, 1))) /* inferior_pid no good? */
4652 pip = procinfo_list; /* take first available */
4653 pid = pid & 0xffff; /* extract "real" pid */
4657 if ((argv = buildargv (args)) == NULL)
4661 make_cleanup (freeargv, (char *) argv);
4663 while (*argv != NULL)
4665 argsize = strlen (*argv);
4666 if (argsize >= 1 && strncmp (*argv, "all", argsize) == 0)
4671 else if (argsize >= 2 && strncmp (*argv, "faults", argsize) == 0)
4676 else if (argsize >= 2 && strncmp (*argv, "flags", argsize) == 0)
4681 else if (argsize >= 1 && strncmp (*argv, "id", argsize) == 0)
4686 else if (argsize >= 1 && strncmp (*argv, "mappings", argsize) == 0)
4691 else if (argsize >= 2 && strncmp (*argv, "signals", argsize) == 0)
4696 else if (argsize >= 2 && strncmp (*argv, "status", argsize) == 0)
4701 else if (argsize >= 2 && strncmp (*argv, "syscalls", argsize) == 0)
4706 else if (argsize >= 1 && strncmp (*argv, "times", argsize) == 0)
4711 else if ((pid = atoi (*argv)) > 0)
4713 pip = (struct procinfo *) xmalloc (sizeof (struct procinfo));
4714 memset (pip, 0, sizeof (*pip));
4717 if (!open_proc_file (pid, pip, O_RDONLY, 0))
4719 perror_with_name (pip -> pathname);
4723 make_cleanup (close_proc_file, pip);
4725 else if (**argv != '\000')
4727 error ("Unrecognized or ambiguous keyword `%s'.", *argv);
4733 /* If we don't have a valid open process at this point, then we have no
4734 inferior or didn't specify a specific pid. */
4739 No process. Start debugging a program or specify an explicit process ID.");
4742 if (!procfs_read_status (pip))
4744 print_sys_errmsg (pip -> pathname, errno);
4745 error ("procfs_read_status failed");
4748 #ifndef PROCFS_USE_READ_WRITE
4750 nlwp = pip->prstatus.pr_nlwp;
4751 lwps = alloca ((2 * nlwp + 2) * sizeof (*lwps));
4753 if (ioctl (pip->ctl_fd, PIOCLWPIDS, lwps))
4755 print_sys_errmsg (pip -> pathname, errno);
4756 error ("PIOCLWPIDS failed");
4758 #else /* PIOCLWPIDS */
4760 lwps = alloca ((2 * nlwp + 2) * sizeof *lwps);
4762 #endif /* PIOCLWPIDS */
4764 for (; nlwp > 0; nlwp--, lwps++)
4766 pip = find_procinfo ((*lwps << 16) | pid, 1);
4770 pip = (struct procinfo *) xmalloc (sizeof (struct procinfo));
4771 memset (pip, 0, sizeof (*pip));
4772 if (!open_proc_file ((*lwps << 16) | pid, pip, O_RDONLY, 0))
4775 make_cleanup (close_proc_file, pip);
4777 if (!procfs_read_status (pip))
4779 print_sys_errmsg (pip -> pathname, errno);
4780 error ("procfs_read_status failed");
4784 #endif /* PROCFS_USE_READ_WRITE */
4786 /* Print verbose information of the requested type(s), or just a summary
4787 of the information for all types. */
4789 printf_filtered ("\nInformation for %s.%d:\n\n", pip -> pathname, *lwps);
4790 if (summary || all || flags)
4792 info_proc_flags (pip, summary);
4796 info_proc_stop (pip, summary);
4797 supply_gregset (&pip->prstatus.pr_reg);
4798 printf_filtered ("PC: ");
4799 print_address (read_pc (), gdb_stdout);
4800 printf_filtered ("\n");
4802 if (summary || all || signals || faults)
4804 info_proc_siginfo (pip, summary);
4806 if (summary || all || syscalls)
4808 info_proc_syscalls (pip, summary);
4810 if (summary || all || mappings)
4812 info_proc_mappings (pip, summary);
4814 if (summary || all || signals)
4816 info_proc_signals (pip, summary);
4818 if (summary || all || faults)
4820 info_proc_faults (pip, summary);
4822 printf_filtered ("\n");
4824 /* All done, deal with closing any temporary process info structure,
4825 freeing temporary memory , etc. */
4827 do_cleanups (old_chain);
4828 #ifndef PROCFS_USE_READ_WRITE
4837 modify_inherit_on_fork_flag - Change the inherit-on-fork flag
4841 void modify_inherit_on_fork_flag (fd, flag)
4845 Call this routine to modify the inherit-on-fork flag. This routine is
4846 just a nice wrapper to hide the #ifdefs needed by various systems to
4852 modify_inherit_on_fork_flag (fd, flag)
4856 #if defined (PIOCSET) || defined (PCSET)
4860 struct proc_ctl pctl;
4862 #if defined (PIOCSET) || defined (PCSET) /* New method */
4866 #ifdef PROCFS_USE_READ_WRITE
4868 pctl.data = PR_FORK;
4869 if (write (fd, (char *) &pctl, sizeof (struct proc_ctl)) < 0)
4872 retval = ioctl (fd, PIOCSET, &pr_flags);
4877 #ifdef PROCFS_USE_READ_WRITE
4879 pctl.data = PR_FORK;
4880 if (write (fd, (char *) &pctl, sizeof (struct proc_ctl)) < 0)
4883 retval = ioctl (fd, PIOCRESET, &pr_flags);
4888 #ifdef PIOCSFORK /* Original method */
4891 retval = ioctl (fd, PIOCSFORK, NULL);
4895 retval = ioctl (fd, PIOCRFORK, NULL);
4898 Neither PR_FORK nor PIOCSFORK exist!!!
4905 print_sys_errmsg ("modify_inherit_on_fork_flag", errno);
4906 error ("PIOCSFORK or PR_FORK modification failed");
4913 modify_run_on_last_close_flag - Change the run-on-last-close flag
4917 void modify_run_on_last_close_flag (fd, flag)
4921 Call this routine to modify the run-on-last-close flag. This routine
4922 is just a nice wrapper to hide the #ifdefs needed by various systems to
4928 modify_run_on_last_close_flag (fd, flag)
4932 #if defined (PIOCSET) || defined (PCSET)
4936 struct proc_ctl pctl;
4938 #if defined (PIOCSET) || defined (PCSET) /* New method */
4942 #ifdef PROCFS_USE_READ_WRITE
4945 if (write (fd, (char *) &pctl, sizeof (struct proc_ctl)) < 0)
4948 retval = ioctl (fd, PIOCSET, &pr_flags);
4953 #ifdef PROCFS_USE_READ_WRITE
4956 if (write (fd, (char *) &pctl, sizeof (struct proc_ctl)) < 0)
4959 retval = ioctl (fd, PIOCRESET, &pr_flags);
4964 #ifdef PIOCSRLC /* Original method */
4966 retval = ioctl (fd, PIOCSRLC, NULL);
4968 retval = ioctl (fd, PIOCRRLC, NULL);
4970 Neither PR_RLC nor PIOCSRLC exist!!!
4977 print_sys_errmsg ("modify_run_on_last_close_flag", errno);
4978 error ("PIOCSRLC or PR_RLC modification failed");
4985 procfs_clear_syscall_trap -- Deletes the trap for the specified system call.
4989 void procfs_clear_syscall_trap (struct procinfo *, int syscall_num, int errok)
4993 This function function disables traps for the specified system call.
4994 errok is non-zero if errors should be ignored.
4998 procfs_clear_syscall_trap (pi, syscall_num, errok)
4999 struct procinfo *pi;
5006 goterr = ioctl (pi->ctl_fd, PIOCGENTRY, &sysset) < 0;
5008 if (goterr && !errok)
5010 print_sys_errmsg (pi->pathname, errno);
5011 error ("PIOCGENTRY failed");
5016 prdelset (&sysset, syscall_num);
5018 if ((ioctl (pi->ctl_fd, PIOCSENTRY, &sysset) < 0) && !errok)
5020 print_sys_errmsg (pi->pathname, errno);
5021 error ("PIOCSENTRY failed");
5025 goterr = ioctl (pi->ctl_fd, PIOCGEXIT, &sysset) < 0;
5027 if (goterr && !errok)
5029 procfs_clear_syscall_trap (pi, syscall_num, 1);
5030 print_sys_errmsg (pi->pathname, errno);
5031 error ("PIOCGEXIT failed");
5036 praddset (&sysset, syscall_num);
5038 if ((ioctl (pi->ctl_fd, PIOCSEXIT, &sysset) < 0) && !errok)
5040 procfs_clear_syscall_trap (pi, syscall_num, 1);
5041 print_sys_errmsg (pi->pathname, errno);
5042 error ("PIOCSEXIT failed");
5046 if (!pi->syscall_handlers)
5049 error ("procfs_clear_syscall_trap: syscall_handlers is empty");
5053 /* Remove handler func from the handler list */
5055 for (i = 0; i < pi->num_syscall_handlers; i++)
5056 if (pi->syscall_handlers[i].syscall_num == syscall_num)
5058 if (i + 1 != pi->num_syscall_handlers)
5059 { /* Not the last entry.
5060 Move subsequent entries fwd. */
5061 memcpy (&pi->syscall_handlers[i], &pi->syscall_handlers[i + 1],
5062 (pi->num_syscall_handlers - i - 1)
5063 * sizeof (struct procfs_syscall_handler));
5066 pi->syscall_handlers = xrealloc (pi->syscall_handlers,
5067 (pi->num_syscall_handlers - 1)
5068 * sizeof (struct procfs_syscall_handler));
5069 pi->num_syscall_handlers--;
5074 error ("procfs_clear_syscall_trap: Couldn't find handler for sys call %d",
5082 procfs_set_syscall_trap -- arrange for a function to be called when the
5083 child executes the specified system call.
5087 void procfs_set_syscall_trap (struct procinfo *, int syscall_num, int flags,
5088 syscall_func_t *function)
5092 This function sets up an entry and/or exit trap for the specified system
5093 call. When the child executes the specified system call, your function
5094 will be called with the call #, a flag that indicates entry or exit, and
5095 pointers to rtnval and statval (which are used by procfs_wait). The
5096 function should return non-zero if something interesting happened, zero
5101 procfs_set_syscall_trap (pi, syscall_num, flags, func)
5102 struct procinfo *pi;
5105 syscall_func_t *func;
5109 if (flags & PROCFS_SYSCALL_ENTRY)
5111 if (ioctl (pi->ctl_fd, PIOCGENTRY, &sysset) < 0)
5113 print_sys_errmsg (pi->pathname, errno);
5114 error ("PIOCGENTRY failed");
5117 praddset (&sysset, syscall_num);
5119 if (ioctl (pi->ctl_fd, PIOCSENTRY, &sysset) < 0)
5121 print_sys_errmsg (pi->pathname, errno);
5122 error ("PIOCSENTRY failed");
5126 if (flags & PROCFS_SYSCALL_EXIT)
5128 if (ioctl (pi->ctl_fd, PIOCGEXIT, &sysset) < 0)
5130 procfs_clear_syscall_trap (pi, syscall_num, 1);
5131 print_sys_errmsg (pi->pathname, errno);
5132 error ("PIOCGEXIT failed");
5135 praddset (&sysset, syscall_num);
5137 if (ioctl (pi->ctl_fd, PIOCSEXIT, &sysset) < 0)
5139 procfs_clear_syscall_trap (pi, syscall_num, 1);
5140 print_sys_errmsg (pi->pathname, errno);
5141 error ("PIOCSEXIT failed");
5145 if (!pi->syscall_handlers)
5147 pi->syscall_handlers = xmalloc (sizeof (struct procfs_syscall_handler));
5148 pi->syscall_handlers[0].syscall_num = syscall_num;
5149 pi->syscall_handlers[0].func = func;
5150 pi->num_syscall_handlers = 1;
5156 for (i = 0; i < pi->num_syscall_handlers; i++)
5157 if (pi->syscall_handlers[i].syscall_num == syscall_num)
5159 pi->syscall_handlers[i].func = func;
5163 pi->syscall_handlers = xrealloc (pi->syscall_handlers, (i + 1)
5164 * sizeof (struct procfs_syscall_handler));
5165 pi->syscall_handlers[i].syscall_num = syscall_num;
5166 pi->syscall_handlers[i].func = func;
5167 pi->num_syscall_handlers++;
5171 #ifdef SYS_lwp_create
5177 procfs_lwp_creation_handler - handle exit from the _lwp_create syscall
5181 int procfs_lwp_creation_handler (pi, syscall_num, why, rtnvalp, statvalp)
5185 This routine is called both when an inferior process and it's new lwp
5186 are about to finish a _lwp_create() system call. This is the system
5187 call that Solaris uses to create a lightweight process. When the
5188 target process gets this event, we can look at sysarg[2] to find the
5189 new childs lwp ID, and create a procinfo struct from that. After that,
5190 we pretend that we got a SIGTRAP, and return non-zero to tell
5191 procfs_wait to wake up. Subsequently, wait_for_inferior gets woken up,
5192 sees the new process and continues it.
5194 When we see the child exiting from lwp_create, we just contine it,
5195 since everything was handled when the parent trapped.
5198 In effect, we are only paying attention to the parent's completion of
5199 the lwp_create syscall. If we only paid attention to the child
5200 instead, then we wouldn't detect the creation of a suspended thread.
5204 procfs_lwp_creation_handler (pi, syscall_num, why, rtnvalp, statvalp)
5205 struct procinfo *pi;
5212 struct procinfo *childpi;
5214 /* We've just detected the completion of an lwp_create system call. Now we
5215 need to setup a procinfo struct for this thread, and notify the thread
5216 system of the new arrival. */
5218 /* If lwp_create failed, then nothing interesting happened. Continue the
5219 process and go back to sleep. */
5221 if (pi->prstatus.pr_reg[R_PSR] & PS_FLAG_CARRY)
5222 { /* _lwp_create failed */
5223 pi->prrun.pr_flags &= PRSTEP;
5224 pi->prrun.pr_flags |= PRCFAULT;
5226 if (ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0)
5227 perror_with_name (pi->pathname);
5232 /* At this point, the new thread is stopped at it's first instruction, and
5233 the parent is stopped at the exit from lwp_create. */
5235 if (pi->new_child) /* Child? */
5236 { /* Yes, just continue it */
5237 pi->prrun.pr_flags &= PRSTEP;
5238 pi->prrun.pr_flags |= PRCFAULT;
5240 if ((pi->prstatus.pr_flags & PR_ISTOP)
5241 && ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0)
5242 perror_with_name (pi->pathname);
5244 pi->new_child = 0; /* No longer new */
5249 /* We're the proud parent of a new thread. Setup an exit trap for lwp_create
5250 in the child and continue the parent. */
5252 /* Third arg is pointer to new thread id. */
5253 lwp_id = read_memory_integer (pi->prstatus.pr_sysarg[2], sizeof (int));
5255 lwp_id = (lwp_id << 16) | PIDGET (pi->pid);
5257 childpi = create_procinfo (lwp_id);
5259 /* The new process has actually inherited the lwp_create syscall trap from
5260 it's parent, but we still have to call this to register handlers for
5263 procfs_set_inferior_syscall_traps (childpi);
5264 add_thread (lwp_id);
5265 printf_filtered ("[New %s]\n", target_pid_to_str (lwp_id));
5267 /* Continue the parent */
5269 pi->prrun.pr_flags &= PRSTEP;
5270 pi->prrun.pr_flags |= PRCFAULT;
5271 if (ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0)
5272 perror_with_name (pi->pathname);
5274 /* The new child may have been created in one of two states:
5275 SUSPENDED or RUNNABLE. If runnable, we will simply signal it to run.
5276 If suspended, we flag it to be continued later, when it has an event. */
5278 if (childpi->prstatus.pr_why == PR_SUSPENDED)
5279 childpi->new_child = 1; /* Flag this as an unseen child process */
5282 /* Continue the child */
5283 childpi->prrun.pr_flags &= PRSTEP;
5284 childpi->prrun.pr_flags |= PRCFAULT;
5286 if (ioctl (childpi->ctl_fd, PIOCRUN, &childpi->prrun) != 0)
5287 perror_with_name (childpi->pathname);
5291 #endif /* SYS_lwp_create */
5293 /* Fork an inferior process, and start debugging it with /proc. */
5296 procfs_create_inferior (exec_file, allargs, env)
5301 char *shell_file = getenv ("SHELL");
5303 if (shell_file != NULL && strchr (shell_file, '/') == NULL)
5306 /* We will be looking down the PATH to find shell_file. If we
5307 just do this the normal way (via execlp, which operates by
5308 attempting an exec for each element of the PATH until it
5309 finds one which succeeds), then there will be an exec for
5310 each failed attempt, each of which will cause a PR_SYSEXIT
5311 stop, and we won't know how to distinguish the PR_SYSEXIT's
5312 for these failed execs with the ones for successful execs
5313 (whether the exec has succeeded is stored at that time in the
5314 carry bit or some such architecture-specific and
5315 non-ABI-specified place).
5317 So I can't think of anything better than to search the PATH
5318 now. This has several disadvantages: (1) There is a race
5319 condition; if we find a file now and it is deleted before we
5320 exec it, we lose, even if the deletion leaves a valid file
5321 further down in the PATH, (2) there is no way to know exactly
5322 what an executable (in the sense of "capable of being
5323 exec'd") file is. Using access() loses because it may lose
5324 if the caller is the superuser; failing to use it loses if
5325 there are ACLs or some such. */
5329 /* FIXME-maybe: might want "set path" command so user can change what
5330 path is used from within GDB. */
5331 char *path = getenv ("PATH");
5333 struct stat statbuf;
5336 path = "/bin:/usr/bin";
5338 tryname = alloca (strlen (path) + strlen (shell_file) + 2);
5339 for (p = path; p != NULL; p = p1 ? p1 + 1: NULL)
5341 p1 = strchr (p, ':');
5346 strncpy (tryname, p, len);
5347 tryname[len] = '\0';
5348 strcat (tryname, "/");
5349 strcat (tryname, shell_file);
5350 if (access (tryname, X_OK) < 0)
5352 if (stat (tryname, &statbuf) < 0)
5354 if (!S_ISREG (statbuf.st_mode))
5355 /* We certainly need to reject directories. I'm not quite
5356 as sure about FIFOs, sockets, etc., but I kind of doubt
5357 that people want to exec() these things. */
5362 /* Not found. This must be an error rather than merely passing
5363 the file to execlp(), because execlp() would try all the
5364 exec()s, causing GDB to get confused. */
5365 error ("Can't find shell %s in PATH", shell_file);
5367 shell_file = tryname;
5370 fork_inferior (exec_file, allargs, env,
5371 proc_set_exec_trap, procfs_init_inferior, shell_file);
5373 /* We are at the first instruction we care about. */
5374 /* Pedal to the metal... */
5376 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_0, 0);
5379 /* Clean up after the inferior dies. */
5382 procfs_mourn_inferior ()
5384 struct procinfo *pi;
5385 struct procinfo *next_pi;
5387 for (pi = procinfo_list; pi; pi = next_pi)
5390 unconditionally_kill_inferior (pi);
5393 unpush_target (&procfs_ops);
5394 generic_mourn_inferior ();
5398 /* Mark our target-struct as eligible for stray "run" and "attach" commands. */
5402 /* This variable is controlled by modules that sit atop procfs that may layer
5403 their own process structure atop that provided here. sol-thread.c does
5404 this because of the Solaris two-level thread model. */
5406 return !procfs_suppress_run;
5408 #ifdef TARGET_HAS_HARDWARE_WATCHPOINTS
5410 /* Insert a watchpoint */
5412 procfs_set_watchpoint(pid, addr, len, rw)
5418 struct procinfo *pi;
5421 pi = find_procinfo (pid == -1 ? inferior_pid : pid, 0);
5422 wpt.pr_vaddr = (caddr_t)addr;
5424 wpt.pr_wflags = ((rw & 1) ? MA_READ : 0) | ((rw & 2) ? MA_WRITE : 0);
5425 if (ioctl (pi->ctl_fd, PIOCSWATCH, &wpt) < 0)
5429 /* Currently it sometimes happens that the same watchpoint gets
5430 deleted twice - don't die in this case (FIXME please) */
5431 if (errno == ESRCH && len == 0)
5433 print_sys_errmsg (pi->pathname, errno);
5434 error ("PIOCSWATCH failed");
5440 procfs_stopped_by_watchpoint(pid)
5443 struct procinfo *pi;
5447 pi = find_procinfo (pid == -1 ? inferior_pid : pid, 0);
5448 if (pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP))
5450 why = pi->prstatus.pr_why;
5451 what = pi->prstatus.pr_what;
5452 if (why == PR_FAULTED
5453 #if defined (FLTWATCH) && defined (FLTKWATCH)
5454 && (what == FLTWATCH || what == FLTKWATCH)
5457 && (what == FLTWATCH)
5460 && (what == FLTKWATCH)
5468 #endif /* TARGET_HAS_HARDWARE_WATCHPOINTS */
5470 /* Why is this necessary? Shouldn't dead threads just be removed from the
5474 procfs_thread_alive (pid)
5477 struct procinfo *pi, *next_pi;
5479 for (pi = procinfo_list; pi; pi = next_pi)
5482 if (pi -> pid == pid)
5483 if (procfs_read_status (pi)) /* alive */
5485 else /* defunct (exited) */
5487 close_proc_file (pi);
5495 procfs_first_available ()
5497 struct procinfo *pi;
5499 for (pi = procinfo_list; pi; pi = pi->next)
5501 if (procfs_read_status (pi))
5507 /* Send a SIGINT to the process group. This acts just like the user typed a
5508 ^C on the controlling terminal.
5510 XXX - This may not be correct for all systems. Some may want to use
5511 killpg() instead of kill (-pgrp). */
5516 extern pid_t inferior_process_group;
5518 kill (-inferior_process_group, SIGINT);
5521 /* Convert a pid to printable form. */
5525 procfs_pid_to_str (pid)
5528 static char buf[100];
5530 sprintf (buf, "Kernel thread %d", TIDGET (pid));
5536 struct target_ops procfs_ops = {
5537 "procfs", /* to_shortname */
5538 "Unix /proc child process", /* to_longname */
5539 "Unix /proc child process (started by the \"run\" command).", /* to_doc */
5540 procfs_open, /* to_open */
5542 procfs_attach, /* to_attach */
5543 procfs_detach, /* to_detach */
5544 procfs_resume, /* to_resume */
5545 procfs_wait, /* to_wait */
5546 procfs_fetch_registers, /* to_fetch_registers */
5547 procfs_store_registers, /* to_store_registers */
5548 procfs_prepare_to_store, /* to_prepare_to_store */
5549 procfs_xfer_memory, /* to_xfer_memory */
5550 procfs_files_info, /* to_files_info */
5551 memory_insert_breakpoint, /* to_insert_breakpoint */
5552 memory_remove_breakpoint, /* to_remove_breakpoint */
5553 terminal_init_inferior, /* to_terminal_init */
5554 terminal_inferior, /* to_terminal_inferior */
5555 terminal_ours_for_output, /* to_terminal_ours_for_output */
5556 terminal_ours, /* to_terminal_ours */
5557 child_terminal_info, /* to_terminal_info */
5558 procfs_kill_inferior, /* to_kill */
5560 0, /* to_lookup_symbol */
5561 procfs_create_inferior, /* to_create_inferior */
5562 procfs_mourn_inferior, /* to_mourn_inferior */
5563 procfs_can_run, /* to_can_run */
5564 procfs_notice_signals, /* to_notice_signals */
5565 procfs_thread_alive, /* to_thread_alive */
5566 procfs_stop, /* to_stop */
5567 process_stratum, /* to_stratum */
5569 1, /* to_has_all_memory */
5570 1, /* to_has_memory */
5571 1, /* to_has_stack */
5572 1, /* to_has_registers */
5573 1, /* to_has_execution */
5575 0, /* sections_end */
5576 OPS_MAGIC /* to_magic */
5580 _initialize_procfs ()
5582 #ifdef HAVE_OPTIONAL_PROC_FS
5583 char procname[MAX_PROC_NAME_SIZE];
5586 /* If we have an optional /proc filesystem (e.g. under OSF/1),
5587 don't add procfs support if we cannot access the running
5589 sprintf (procname, STATUS_PROC_NAME_FMT, getpid ());
5590 if ((fd = open (procname, O_RDONLY)) < 0)
5595 add_target (&procfs_ops);
5597 add_info ("processes", info_proc,
5598 "Show process status information using /proc entry.\n\
5599 Specify process id or use current inferior by default.\n\
5600 Specify keywords for detailed information; default is summary.\n\
5601 Keywords are: `all', `faults', `flags', `id', `mappings', `signals',\n\
5602 `status', `syscalls', and `times'.\n\
5603 Unambiguous abbreviations may be used.");
5605 init_syscall_table ();