1 /* Machine independent support for SVR4 /proc (process file system) for GDB.
2 Copyright 1991, 1992 Free Software Foundation, Inc.
3 Written by Fred Fish at Cygnus Support.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
24 For information on the details of using /proc consult section proc(4)
25 in the UNIX System V Release 4 System Administrator's Reference Manual.
27 The general register and floating point register sets are manipulated by
28 separate ioctl's. This file makes the assumption that if FP0_REGNUM is
29 defined, then support for the floating point register set is desired,
30 regardless of whether or not the actual target has floating point hardware.
38 #include <sys/procfs.h>
48 #define MAX_SYSCALLS 256 /* Maximum number of syscalls for table */
51 #define PROC_NAME_FMT "/proc/%05d"
54 extern struct target_ops procfs_ops
; /* Forward declaration */
56 #if 1 /* FIXME: Gross and ugly hack to resolve coredep.c global */
57 CORE_ADDR kernel_u_addr
;
60 #ifdef BROKEN_SIGINFO_H /* Workaround broken SGS <sys/siginfo.h> */
62 #define si_pid _data._proc.pid
64 #define si_uid _data._proc._pdata._kill.uid
65 #endif /* BROKEN_SIGINFO_H */
67 /* All access to the inferior, either one started by gdb or one that has
68 been attached to, is controlled by an instance of a procinfo structure,
69 defined below. Since gdb currently only handles one inferior at a time,
70 the procinfo structure for the inferior is statically allocated and
71 only one exists at any given time. There is a separate procinfo
72 structure for use by the "info proc" command, so that we can print
73 useful information about any random process without interfering with
74 the inferior's procinfo information. */
77 int valid
; /* Nonzero if pid, fd, & pathname are valid */
78 int pid
; /* Process ID of inferior */
79 int fd
; /* File descriptor for /proc entry */
80 char *pathname
; /* Pathname to /proc entry */
81 int was_stopped
; /* Nonzero if was stopped prior to attach */
82 int nopass_next_sigstop
; /* Don't pass a sigstop on next resume */
83 prrun_t prrun
; /* Control state when it is run */
84 prstatus_t prstatus
; /* Current process status info */
85 gregset_t gregset
; /* General register set */
86 fpregset_t fpregset
; /* Floating point register set */
87 fltset_t fltset
; /* Current traced hardware fault set */
88 sigset_t trace
; /* Current traced signal set */
89 sysset_t exitset
; /* Current traced system call exit set */
90 sysset_t entryset
; /* Current traced system call entry set */
91 fltset_t saved_fltset
; /* Saved traced hardware fault set */
92 sigset_t saved_trace
; /* Saved traced signal set */
93 sigset_t saved_sighold
; /* Saved held signal set */
94 sysset_t saved_exitset
; /* Saved traced system call exit set */
95 sysset_t saved_entryset
; /* Saved traced system call entry set */
98 static struct procinfo pi
; /* Inferior's process information */
100 /* Much of the information used in the /proc interface, particularly for
101 printing status information, is kept as tables of structures of the
102 following form. These tables can be used to map numeric values to
103 their symbolic names and to a string that describes their specific use. */
106 int value
; /* The numeric value */
107 char *name
; /* The equivalent symbolic value */
108 char *desc
; /* Short description of value */
111 /* Translate bits in the pr_flags member of the prstatus structure, into the
112 names and desc information. */
114 static struct trans pr_flag_table
[] =
116 #if defined (PR_STOPPED)
117 PR_STOPPED
, "PR_STOPPED", "Process is stopped",
119 #if defined (PR_ISTOP)
120 PR_ISTOP
, "PR_ISTOP", "Stopped on an event of interest",
122 #if defined (PR_DSTOP)
123 PR_DSTOP
, "PR_DSTOP", "A stop directive is in effect",
125 #if defined (PR_ASLEEP)
126 PR_ASLEEP
, "PR_ASLEEP", "Sleeping in an interruptible system call",
128 #if defined (PR_FORK)
129 PR_FORK
, "PR_FORK", "Inherit-on-fork is in effect",
132 PR_RLC
, "PR_RLC", "Run-on-last-close is in effect",
134 #if defined (PR_PTRACE)
135 PR_PTRACE
, "PR_PTRACE", "Process is being controlled by ptrace",
137 #if defined (PR_PCINVAL)
138 PR_PCINVAL
, "PR_PCINVAL", "PC refers to an invalid virtual address",
140 #if defined (PR_ISSYS)
141 PR_ISSYS
, "PR_ISSYS", "Is a system process",
143 #if defined (PR_STEP)
144 PR_STEP
, "PR_STEP", "Process has single step pending",
147 PR_KLC
, "PR_KLC", "Kill-on-last-close is in effect",
149 #if defined (PR_ASYNC)
150 PR_ASYNC
, "PR_ASYNC", "Asynchronous stop is in effect",
152 #if defined (PR_PCOMPAT)
153 PR_PCOMPAT
, "PR_PCOMPAT", "Ptrace compatibility mode in effect",
158 /* Translate values in the pr_why field of the prstatus struct. */
160 static struct trans pr_why_table
[] =
162 #if defined (PR_REQUESTED)
163 PR_REQUESTED
, "PR_REQUESTED", "Directed to stop via PIOCSTOP/PIOCWSTOP",
165 #if defined (PR_SIGNALLED)
166 PR_SIGNALLED
, "PR_SIGNALLED", "Receipt of a traced signal",
168 #if defined (PR_FAULTED)
169 PR_FAULTED
, "PR_FAULTED", "Incurred a traced hardware fault",
171 #if defined (PR_SYSENTRY)
172 PR_SYSENTRY
, "PR_SYSENTRY", "Entry to a traced system call",
174 #if defined (PR_SYSEXIT)
175 PR_SYSEXIT
, "PR_SYSEXIT", "Exit from a traced system call",
177 #if defined (PR_JOBCONTROL)
178 PR_JOBCONTROL
, "PR_JOBCONTROL", "Default job control stop signal action",
180 #if defined (PR_SUSPENDED)
181 PR_SUSPENDED
, "PR_SUSPENDED", "Process suspended",
186 /* Hardware fault translation table. */
188 static struct trans faults_table
[] =
191 FLTILL
, "FLTILL", "Illegal instruction",
193 #if defined (FLTPRIV)
194 FLTPRIV
, "FLTPRIV", "Privileged instruction",
197 FLTBPT
, "FLTBPT", "Breakpoint trap",
199 #if defined (FLTTRACE)
200 FLTTRACE
, "FLTTRACE", "Trace trap",
202 #if defined (FLTACCESS)
203 FLTACCESS
, "FLTACCESS", "Memory access fault",
205 #if defined (FLTBOUNDS)
206 FLTBOUNDS
, "FLTBOUNDS", "Memory bounds violation",
208 #if defined (FLTIOVF)
209 FLTIOVF
, "FLTIOVF", "Integer overflow",
211 #if defined (FLTIZDIV)
212 FLTIZDIV
, "FLTIZDIV", "Integer zero divide",
215 FLTFPE
, "FLTFPE", "Floating-point exception",
217 #if defined (FLTSTACK)
218 FLTSTACK
, "FLTSTACK", "Unrecoverable stack fault",
220 #if defined (FLTPAGE)
221 FLTPAGE
, "FLTPAGE", "Recoverable page fault",
226 /* Translation table for signal generation information. See UNIX System
227 V Release 4 Programmer's Reference Manual, siginfo(5). */
229 static struct sigcode
{
234 } siginfo_table
[] = {
235 #if defined (SIGILL) && defined (ILL_ILLOPC)
236 SIGILL
, ILL_ILLOPC
, "ILL_ILLOPC", "Illegal opcode",
238 #if defined (SIGILL) && defined (ILL_ILLOPN)
239 SIGILL
, ILL_ILLOPN
, "ILL_ILLOPN", "Illegal operand",
241 #if defined (SIGILL) && defined (ILL_ILLADR)
242 SIGILL
, ILL_ILLADR
, "ILL_ILLADR", "Illegal addressing mode",
244 #if defined (SIGILL) && defined (ILL_ILLTRP)
245 SIGILL
, ILL_ILLTRP
, "ILL_ILLTRP", "Illegal trap",
247 #if defined (SIGILL) && defined (ILL_PRVOPC)
248 SIGILL
, ILL_PRVOPC
, "ILL_PRVOPC", "Privileged opcode",
250 #if defined (SIGILL) && defined (ILL_PRVREG)
251 SIGILL
, ILL_PRVREG
, "ILL_PRVREG", "Privileged register",
253 #if defined (SIGILL) && defined (ILL_COPROC)
254 SIGILL
, ILL_COPROC
, "ILL_COPROC", "Coprocessor error",
256 #if defined (SIGILL) && defined (ILL_BADSTK)
257 SIGILL
, ILL_BADSTK
, "ILL_BADSTK", "Internal stack error",
259 #if defined (SIGFPE) && defined (FPE_INTDIV)
260 SIGFPE
, FPE_INTDIV
, "FPE_INTDIV", "Integer divide by zero",
262 #if defined (SIGFPE) && defined (FPE_INTOVF)
263 SIGFPE
, FPE_INTOVF
, "FPE_INTOVF", "Integer overflow",
265 #if defined (SIGFPE) && defined (FPE_FLTDIV)
266 SIGFPE
, FPE_FLTDIV
, "FPE_FLTDIV", "Floating point divide by zero",
268 #if defined (SIGFPE) && defined (FPE_FLTOVF)
269 SIGFPE
, FPE_FLTOVF
, "FPE_FLTOVF", "Floating point overflow",
271 #if defined (SIGFPE) && defined (FPE_FLTUND)
272 SIGFPE
, FPE_FLTUND
, "FPE_FLTUND", "Floating point underflow",
274 #if defined (SIGFPE) && defined (FPE_FLTRES)
275 SIGFPE
, FPE_FLTRES
, "FPE_FLTRES", "Floating point inexact result",
277 #if defined (SIGFPE) && defined (FPE_FLTINV)
278 SIGFPE
, FPE_FLTINV
, "FPE_FLTINV", "Invalid floating point operation",
280 #if defined (SIGFPE) && defined (FPE_FLTSUB)
281 SIGFPE
, FPE_FLTSUB
, "FPE_FLTSUB", "Subscript out of range",
283 #if defined (SIGSEGV) && defined (SEGV_MAPERR)
284 SIGSEGV
, SEGV_MAPERR
, "SEGV_MAPERR", "Address not mapped to object",
286 #if defined (SIGSEGV) && defined (SEGV_ACCERR)
287 SIGSEGV
, SEGV_ACCERR
, "SEGV_ACCERR", "Invalid permissions for object",
289 #if defined (SIGBUS) && defined (BUS_ADRALN)
290 SIGBUS
, BUS_ADRALN
, "BUS_ADRALN", "Invalid address alignment",
292 #if defined (SIGBUS) && defined (BUS_ADRERR)
293 SIGBUS
, BUS_ADRERR
, "BUS_ADRERR", "Non-existent physical address",
295 #if defined (SIGBUS) && defined (BUS_OBJERR)
296 SIGBUS
, BUS_OBJERR
, "BUS_OBJERR", "Object specific hardware error",
298 #if defined (SIGTRAP) && defined (TRAP_BRKPT)
299 SIGTRAP
, TRAP_BRKPT
, "TRAP_BRKPT", "Process breakpoint",
301 #if defined (SIGTRAP) && defined (TRAP_TRACE)
302 SIGTRAP
, TRAP_TRACE
, "TRAP_TRACE", "Process trace trap",
304 #if defined (SIGCLD) && defined (CLD_EXITED)
305 SIGCLD
, CLD_EXITED
, "CLD_EXITED", "Child has exited",
307 #if defined (SIGCLD) && defined (CLD_KILLED)
308 SIGCLD
, CLD_KILLED
, "CLD_KILLED", "Child was killed",
310 #if defined (SIGCLD) && defined (CLD_DUMPED)
311 SIGCLD
, CLD_DUMPED
, "CLD_DUMPED", "Child has terminated abnormally",
313 #if defined (SIGCLD) && defined (CLD_TRAPPED)
314 SIGCLD
, CLD_TRAPPED
, "CLD_TRAPPED", "Traced child has trapped",
316 #if defined (SIGCLD) && defined (CLD_STOPPED)
317 SIGCLD
, CLD_STOPPED
, "CLD_STOPPED", "Child has stopped",
319 #if defined (SIGCLD) && defined (CLD_CONTINUED)
320 SIGCLD
, CLD_CONTINUED
, "CLD_CONTINUED", "Stopped child had continued",
322 #if defined (SIGPOLL) && defined (POLL_IN)
323 SIGPOLL
, POLL_IN
, "POLL_IN", "Input input available",
325 #if defined (SIGPOLL) && defined (POLL_OUT)
326 SIGPOLL
, POLL_OUT
, "POLL_OUT", "Output buffers available",
328 #if defined (SIGPOLL) && defined (POLL_MSG)
329 SIGPOLL
, POLL_MSG
, "POLL_MSG", "Input message available",
331 #if defined (SIGPOLL) && defined (POLL_ERR)
332 SIGPOLL
, POLL_ERR
, "POLL_ERR", "I/O error",
334 #if defined (SIGPOLL) && defined (POLL_PRI)
335 SIGPOLL
, POLL_PRI
, "POLL_PRI", "High priority input available",
337 #if defined (SIGPOLL) && defined (POLL_HUP)
338 SIGPOLL
, POLL_HUP
, "POLL_HUP", "Device disconnected",
343 static char *syscall_table
[MAX_SYSCALLS
];
345 /* Prototypes for local functions */
348 set_proc_siginfo
PARAMS ((struct procinfo
*, int));
351 init_syscall_table
PARAMS ((void));
354 syscallname
PARAMS ((int));
357 signalname
PARAMS ((int));
360 errnoname
PARAMS ((int));
363 proc_address_to_fd
PARAMS ((CORE_ADDR
, int));
366 open_proc_file
PARAMS ((int, struct procinfo
*, int));
369 close_proc_file
PARAMS ((struct procinfo
*));
372 unconditionally_kill_inferior
PARAMS ((void));
375 proc_init_failed
PARAMS ((char *));
378 info_proc
PARAMS ((char *, int));
381 info_proc_flags
PARAMS ((struct procinfo
*, int));
384 info_proc_stop
PARAMS ((struct procinfo
*, int));
387 info_proc_siginfo
PARAMS ((struct procinfo
*, int));
390 info_proc_syscalls
PARAMS ((struct procinfo
*, int));
393 info_proc_mappings
PARAMS ((struct procinfo
*, int));
396 info_proc_signals
PARAMS ((struct procinfo
*, int));
399 info_proc_faults
PARAMS ((struct procinfo
*, int));
402 mappingflags
PARAMS ((long));
405 lookupname
PARAMS ((struct trans
*, unsigned int, char *));
408 lookupdesc
PARAMS ((struct trans
*, unsigned int));
411 do_attach
PARAMS ((int pid
));
414 do_detach
PARAMS ((int siggnal
));
417 procfs_create_inferior
PARAMS ((char *, char *, char **));
420 procfs_notice_signals
PARAMS ((void));
422 /* External function prototypes that can't be easily included in any
423 header file because the args are typedefs in system include files. */
426 supply_gregset
PARAMS ((gregset_t
*));
429 fill_gregset
PARAMS ((gregset_t
*, int));
432 supply_fpregset
PARAMS ((fpregset_t
*));
435 fill_fpregset
PARAMS ((fpregset_t
*, int));
441 lookupdesc -- translate a value to a summary desc string
445 static char *lookupdesc (struct trans *transp, unsigned int val);
449 Given a pointer to a translation table and a value to be translated,
450 lookup the desc string and return it.
454 lookupdesc (transp
, val
)
455 struct trans
*transp
;
460 for (desc
= NULL
; transp
-> name
!= NULL
; transp
++)
462 if (transp
-> value
== val
)
464 desc
= transp
-> desc
;
469 /* Didn't find a translation for the specified value, set a default one. */
482 lookupname -- translate a value to symbolic name
486 static char *lookupname (struct trans *transp, unsigned int val,
491 Given a pointer to a translation table, a value to be translated,
492 and a default prefix to return if the value can't be translated,
493 match the value with one of the translation table entries and
494 return a pointer to the symbolic name.
496 If no match is found it just returns the value as a printable string,
497 with the given prefix. The previous such value, if any, is freed
502 lookupname (transp
, val
, prefix
)
503 struct trans
*transp
;
510 for (name
= NULL
; transp
-> name
!= NULL
; transp
++)
512 if (transp
-> value
== val
)
514 name
= transp
-> name
;
519 /* Didn't find a translation for the specified value, build a default
520 one using the specified prefix and return it. The lifetime of
521 the value is only until the next one is needed. */
529 locbuf
= xmalloc (strlen (prefix
) + 16);
530 sprintf (locbuf
, "%s %u", prefix
, val
);
542 static char locbuf
[32];
544 for (scp
= siginfo_table
; scp
-> codename
!= NULL
; scp
++)
546 if ((scp
-> signo
== sip
-> si_signo
) &&
547 (scp
-> code
== sip
-> si_code
))
549 name
= scp
-> codename
;
555 sprintf (locbuf
, "sigcode %u", sip
-> si_signo
);
568 for (scp
= siginfo_table
; scp
-> codename
!= NULL
; scp
++)
570 if ((scp
-> signo
== sip
-> si_signo
) &&
571 (scp
-> code
== sip
-> si_code
))
579 desc
= "Unrecognized signal or trap use";
588 syscallname - translate a system call number into a system call name
592 char *syscallname (int syscallnum)
596 Given a system call number, translate it into the printable name
597 of a system call, or into "syscall <num>" if it is an unknown
602 syscallname (syscallnum
)
605 static char locbuf
[32];
608 if (syscallnum
>= 0 && syscallnum
< MAX_SYSCALLS
)
610 rtnval
= syscall_table
[syscallnum
];
614 sprintf (locbuf
, "syscall %u", syscallnum
);
624 init_syscall_table - initialize syscall translation table
628 void init_syscall_table (void)
632 Dynamically initialize the translation table to convert system
633 call numbers into printable system call names. Done once per
634 gdb run, on initialization.
638 This is awfully ugly, but preprocessor tricks to make it prettier
639 tend to be nonportable.
643 init_syscall_table ()
645 #if defined (SYS_exit)
646 syscall_table
[SYS_exit
] = "exit";
648 #if defined (SYS_fork)
649 syscall_table
[SYS_fork
] = "fork";
651 #if defined (SYS_read)
652 syscall_table
[SYS_read
] = "read";
654 #if defined (SYS_write)
655 syscall_table
[SYS_write
] = "write";
657 #if defined (SYS_open)
658 syscall_table
[SYS_open
] = "open";
660 #if defined (SYS_close)
661 syscall_table
[SYS_close
] = "close";
663 #if defined (SYS_wait)
664 syscall_table
[SYS_wait
] = "wait";
666 #if defined (SYS_creat)
667 syscall_table
[SYS_creat
] = "creat";
669 #if defined (SYS_link)
670 syscall_table
[SYS_link
] = "link";
672 #if defined (SYS_unlink)
673 syscall_table
[SYS_unlink
] = "unlink";
675 #if defined (SYS_exec)
676 syscall_table
[SYS_exec
] = "exec";
678 #if defined (SYS_execv)
679 syscall_table
[SYS_execv
] = "execv";
681 #if defined (SYS_execve)
682 syscall_table
[SYS_execve
] = "execve";
684 #if defined (SYS_chdir)
685 syscall_table
[SYS_chdir
] = "chdir";
687 #if defined (SYS_time)
688 syscall_table
[SYS_time
] = "time";
690 #if defined (SYS_mknod)
691 syscall_table
[SYS_mknod
] = "mknod";
693 #if defined (SYS_chmod)
694 syscall_table
[SYS_chmod
] = "chmod";
696 #if defined (SYS_chown)
697 syscall_table
[SYS_chown
] = "chown";
699 #if defined (SYS_brk)
700 syscall_table
[SYS_brk
] = "brk";
702 #if defined (SYS_stat)
703 syscall_table
[SYS_stat
] = "stat";
705 #if defined (SYS_lseek)
706 syscall_table
[SYS_lseek
] = "lseek";
708 #if defined (SYS_getpid)
709 syscall_table
[SYS_getpid
] = "getpid";
711 #if defined (SYS_mount)
712 syscall_table
[SYS_mount
] = "mount";
714 #if defined (SYS_umount)
715 syscall_table
[SYS_umount
] = "umount";
717 #if defined (SYS_setuid)
718 syscall_table
[SYS_setuid
] = "setuid";
720 #if defined (SYS_getuid)
721 syscall_table
[SYS_getuid
] = "getuid";
723 #if defined (SYS_stime)
724 syscall_table
[SYS_stime
] = "stime";
726 #if defined (SYS_ptrace)
727 syscall_table
[SYS_ptrace
] = "ptrace";
729 #if defined (SYS_alarm)
730 syscall_table
[SYS_alarm
] = "alarm";
732 #if defined (SYS_fstat)
733 syscall_table
[SYS_fstat
] = "fstat";
735 #if defined (SYS_pause)
736 syscall_table
[SYS_pause
] = "pause";
738 #if defined (SYS_utime)
739 syscall_table
[SYS_utime
] = "utime";
741 #if defined (SYS_stty)
742 syscall_table
[SYS_stty
] = "stty";
744 #if defined (SYS_gtty)
745 syscall_table
[SYS_gtty
] = "gtty";
747 #if defined (SYS_access)
748 syscall_table
[SYS_access
] = "access";
750 #if defined (SYS_nice)
751 syscall_table
[SYS_nice
] = "nice";
753 #if defined (SYS_statfs)
754 syscall_table
[SYS_statfs
] = "statfs";
756 #if defined (SYS_sync)
757 syscall_table
[SYS_sync
] = "sync";
759 #if defined (SYS_kill)
760 syscall_table
[SYS_kill
] = "kill";
762 #if defined (SYS_fstatfs)
763 syscall_table
[SYS_fstatfs
] = "fstatfs";
765 #if defined (SYS_pgrpsys)
766 syscall_table
[SYS_pgrpsys
] = "pgrpsys";
768 #if defined (SYS_xenix)
769 syscall_table
[SYS_xenix
] = "xenix";
771 #if defined (SYS_dup)
772 syscall_table
[SYS_dup
] = "dup";
774 #if defined (SYS_pipe)
775 syscall_table
[SYS_pipe
] = "pipe";
777 #if defined (SYS_times)
778 syscall_table
[SYS_times
] = "times";
780 #if defined (SYS_profil)
781 syscall_table
[SYS_profil
] = "profil";
783 #if defined (SYS_plock)
784 syscall_table
[SYS_plock
] = "plock";
786 #if defined (SYS_setgid)
787 syscall_table
[SYS_setgid
] = "setgid";
789 #if defined (SYS_getgid)
790 syscall_table
[SYS_getgid
] = "getgid";
792 #if defined (SYS_signal)
793 syscall_table
[SYS_signal
] = "signal";
795 #if defined (SYS_msgsys)
796 syscall_table
[SYS_msgsys
] = "msgsys";
798 #if defined (SYS_sys3b)
799 syscall_table
[SYS_sys3b
] = "sys3b";
801 #if defined (SYS_acct)
802 syscall_table
[SYS_acct
] = "acct";
804 #if defined (SYS_shmsys)
805 syscall_table
[SYS_shmsys
] = "shmsys";
807 #if defined (SYS_semsys)
808 syscall_table
[SYS_semsys
] = "semsys";
810 #if defined (SYS_ioctl)
811 syscall_table
[SYS_ioctl
] = "ioctl";
813 #if defined (SYS_uadmin)
814 syscall_table
[SYS_uadmin
] = "uadmin";
816 #if defined (SYS_utssys)
817 syscall_table
[SYS_utssys
] = "utssys";
819 #if defined (SYS_fsync)
820 syscall_table
[SYS_fsync
] = "fsync";
822 #if defined (SYS_umask)
823 syscall_table
[SYS_umask
] = "umask";
825 #if defined (SYS_chroot)
826 syscall_table
[SYS_chroot
] = "chroot";
828 #if defined (SYS_fcntl)
829 syscall_table
[SYS_fcntl
] = "fcntl";
831 #if defined (SYS_ulimit)
832 syscall_table
[SYS_ulimit
] = "ulimit";
834 #if defined (SYS_rfsys)
835 syscall_table
[SYS_rfsys
] = "rfsys";
837 #if defined (SYS_rmdir)
838 syscall_table
[SYS_rmdir
] = "rmdir";
840 #if defined (SYS_mkdir)
841 syscall_table
[SYS_mkdir
] = "mkdir";
843 #if defined (SYS_getdents)
844 syscall_table
[SYS_getdents
] = "getdents";
846 #if defined (SYS_sysfs)
847 syscall_table
[SYS_sysfs
] = "sysfs";
849 #if defined (SYS_getmsg)
850 syscall_table
[SYS_getmsg
] = "getmsg";
852 #if defined (SYS_putmsg)
853 syscall_table
[SYS_putmsg
] = "putmsg";
855 #if defined (SYS_poll)
856 syscall_table
[SYS_poll
] = "poll";
858 #if defined (SYS_lstat)
859 syscall_table
[SYS_lstat
] = "lstat";
861 #if defined (SYS_symlink)
862 syscall_table
[SYS_symlink
] = "symlink";
864 #if defined (SYS_readlink)
865 syscall_table
[SYS_readlink
] = "readlink";
867 #if defined (SYS_setgroups)
868 syscall_table
[SYS_setgroups
] = "setgroups";
870 #if defined (SYS_getgroups)
871 syscall_table
[SYS_getgroups
] = "getgroups";
873 #if defined (SYS_fchmod)
874 syscall_table
[SYS_fchmod
] = "fchmod";
876 #if defined (SYS_fchown)
877 syscall_table
[SYS_fchown
] = "fchown";
879 #if defined (SYS_sigprocmask)
880 syscall_table
[SYS_sigprocmask
] = "sigprocmask";
882 #if defined (SYS_sigsuspend)
883 syscall_table
[SYS_sigsuspend
] = "sigsuspend";
885 #if defined (SYS_sigaltstack)
886 syscall_table
[SYS_sigaltstack
] = "sigaltstack";
888 #if defined (SYS_sigaction)
889 syscall_table
[SYS_sigaction
] = "sigaction";
891 #if defined (SYS_sigpending)
892 syscall_table
[SYS_sigpending
] = "sigpending";
894 #if defined (SYS_context)
895 syscall_table
[SYS_context
] = "context";
897 #if defined (SYS_evsys)
898 syscall_table
[SYS_evsys
] = "evsys";
900 #if defined (SYS_evtrapret)
901 syscall_table
[SYS_evtrapret
] = "evtrapret";
903 #if defined (SYS_statvfs)
904 syscall_table
[SYS_statvfs
] = "statvfs";
906 #if defined (SYS_fstatvfs)
907 syscall_table
[SYS_fstatvfs
] = "fstatvfs";
909 #if defined (SYS_nfssys)
910 syscall_table
[SYS_nfssys
] = "nfssys";
912 #if defined (SYS_waitsys)
913 syscall_table
[SYS_waitsys
] = "waitsys";
915 #if defined (SYS_sigsendsys)
916 syscall_table
[SYS_sigsendsys
] = "sigsendsys";
918 #if defined (SYS_hrtsys)
919 syscall_table
[SYS_hrtsys
] = "hrtsys";
921 #if defined (SYS_acancel)
922 syscall_table
[SYS_acancel
] = "acancel";
924 #if defined (SYS_async)
925 syscall_table
[SYS_async
] = "async";
927 #if defined (SYS_priocntlsys)
928 syscall_table
[SYS_priocntlsys
] = "priocntlsys";
930 #if defined (SYS_pathconf)
931 syscall_table
[SYS_pathconf
] = "pathconf";
933 #if defined (SYS_mincore)
934 syscall_table
[SYS_mincore
] = "mincore";
936 #if defined (SYS_mmap)
937 syscall_table
[SYS_mmap
] = "mmap";
939 #if defined (SYS_mprotect)
940 syscall_table
[SYS_mprotect
] = "mprotect";
942 #if defined (SYS_munmap)
943 syscall_table
[SYS_munmap
] = "munmap";
945 #if defined (SYS_fpathconf)
946 syscall_table
[SYS_fpathconf
] = "fpathconf";
948 #if defined (SYS_vfork)
949 syscall_table
[SYS_vfork
] = "vfork";
951 #if defined (SYS_fchdir)
952 syscall_table
[SYS_fchdir
] = "fchdir";
954 #if defined (SYS_readv)
955 syscall_table
[SYS_readv
] = "readv";
957 #if defined (SYS_writev)
958 syscall_table
[SYS_writev
] = "writev";
960 #if defined (SYS_xstat)
961 syscall_table
[SYS_xstat
] = "xstat";
963 #if defined (SYS_lxstat)
964 syscall_table
[SYS_lxstat
] = "lxstat";
966 #if defined (SYS_fxstat)
967 syscall_table
[SYS_fxstat
] = "fxstat";
969 #if defined (SYS_xmknod)
970 syscall_table
[SYS_xmknod
] = "xmknod";
972 #if defined (SYS_clocal)
973 syscall_table
[SYS_clocal
] = "clocal";
975 #if defined (SYS_setrlimit)
976 syscall_table
[SYS_setrlimit
] = "setrlimit";
978 #if defined (SYS_getrlimit)
979 syscall_table
[SYS_getrlimit
] = "getrlimit";
981 #if defined (SYS_lchown)
982 syscall_table
[SYS_lchown
] = "lchown";
984 #if defined (SYS_memcntl)
985 syscall_table
[SYS_memcntl
] = "memcntl";
987 #if defined (SYS_getpmsg)
988 syscall_table
[SYS_getpmsg
] = "getpmsg";
990 #if defined (SYS_putpmsg)
991 syscall_table
[SYS_putpmsg
] = "putpmsg";
993 #if defined (SYS_rename)
994 syscall_table
[SYS_rename
] = "rename";
996 #if defined (SYS_uname)
997 syscall_table
[SYS_uname
] = "uname";
999 #if defined (SYS_setegid)
1000 syscall_table
[SYS_setegid
] = "setegid";
1002 #if defined (SYS_sysconfig)
1003 syscall_table
[SYS_sysconfig
] = "sysconfig";
1005 #if defined (SYS_adjtime)
1006 syscall_table
[SYS_adjtime
] = "adjtime";
1008 #if defined (SYS_systeminfo)
1009 syscall_table
[SYS_systeminfo
] = "systeminfo";
1011 #if defined (SYS_seteuid)
1012 syscall_table
[SYS_seteuid
] = "seteuid";
1020 ptrace -- override library version to force errors for /proc version
1024 int ptrace (int request, int pid, PTRACE_ARG3_TYPE arg3, int arg4)
1028 When gdb is configured to use /proc, it should not be calling
1029 or otherwise attempting to use ptrace. In order to catch errors
1030 where use of /proc is configured, but some routine is still calling
1031 ptrace, we provide a local version of a function with that name
1032 that does nothing but issue an error message.
1036 ptrace (request
, pid
, arg3
, arg4
)
1039 PTRACE_ARG3_TYPE arg3
;
1042 error ("internal error - there is a call to ptrace() somewhere");
1050 procfs_kill_inferior - kill any currently inferior
1054 void procfs_kill_inferior (void)
1058 Kill any current inferior.
1062 Kills even attached inferiors. Presumably the user has already
1063 been prompted that the inferior is an attached one rather than
1064 one started by gdb. (FIXME?)
1069 procfs_kill_inferior ()
1071 if (inferior_pid
!= 0)
1073 unconditionally_kill_inferior ();
1074 target_mourn_inferior ();
1082 unconditionally_kill_inferior - terminate the inferior
1086 static void unconditionally_kill_inferior (void)
1090 Kill the current inferior. Should not be called until it
1091 is at least tested that there is an inferior.
1095 A possibly useful enhancement would be to first try sending
1096 the inferior a terminate signal, politely asking it to commit
1097 suicide, before we murder it.
1102 unconditionally_kill_inferior ()
1107 ioctl (pi
.fd
, PIOCKILL
, &signo
);
1108 close_proc_file (&pi
);
1116 procfs_xfer_memory -- copy data to or from inferior memory space
1120 int procfs_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len,
1121 int dowrite, struct target_ops target)
1125 Copy LEN bytes to/from inferior's memory starting at MEMADDR
1126 from/to debugger memory starting at MYADDR. Copy from inferior
1127 if DOWRITE is zero or to inferior if DOWRITE is nonzero.
1129 Returns the length copied, which is either the LEN argument or
1130 zero. This xfer function does not do partial moves, since procfs_ops
1131 doesn't allow memory operations to cross below us in the target stack
1136 The /proc interface makes this an almost trivial task.
1140 procfs_xfer_memory (memaddr
, myaddr
, len
, dowrite
, target
)
1145 struct target_ops
*target
; /* ignored */
1149 if (lseek (pi
.fd
, (off_t
) memaddr
, 0) == (off_t
) memaddr
)
1153 nbytes
= write (pi
.fd
, myaddr
, len
);
1157 nbytes
= read (pi
.fd
, myaddr
, len
);
1171 procfs_store_registers -- copy register values back to inferior
1175 void procfs_store_registers (int regno)
1179 Store our current register values back into the inferior. If
1180 REGNO is -1 then store all the register, otherwise store just
1181 the value specified by REGNO.
1185 If we are storing only a single register, we first have to get all
1186 the current values from the process, overwrite the desired register
1187 in the gregset with the one we want from gdb's registers, and then
1188 send the whole set back to the process. For writing all the
1189 registers, all we have to do is generate the gregset and send it to
1192 Also note that the process has to be stopped on an event of interest
1193 for this to work, which basically means that it has to have been
1194 run under the control of one of the other /proc ioctl calls and not
1195 ptrace. Since we don't use ptrace anyway, we don't worry about this
1196 fine point, but it is worth noting for future reference.
1198 Gdb is confused about what this function is supposed to return.
1199 Some versions return a value, others return nothing. Some are
1200 declared to return a value and actually return nothing. Gdb ignores
1201 anything returned. (FIXME)
1206 procfs_store_registers (regno
)
1211 ioctl (pi
.fd
, PIOCGREG
, &pi
.gregset
);
1213 fill_gregset (&pi
.gregset
, regno
);
1214 ioctl (pi
.fd
, PIOCSREG
, &pi
.gregset
);
1216 #if defined (FP0_REGNUM)
1218 /* Now repeat everything using the floating point register set, if the
1219 target has floating point hardware. Since we ignore the returned value,
1220 we'll never know whether it worked or not anyway. */
1224 ioctl (pi
.fd
, PIOCGFPREG
, &pi
.fpregset
);
1226 fill_fpregset (&pi
.fpregset
, regno
);
1227 ioctl (pi
.fd
, PIOCSFPREG
, &pi
.fpregset
);
1229 #endif /* FP0_REGNUM */
1237 procfs_init_inferior - initialize access to a /proc entry
1241 void procfs_init_inferior (int pid)
1245 When gdb starts an inferior, this function is called in the parent
1246 process immediately after the fork. It waits for the child to stop
1247 on the return from the exec system call (the child itself takes care
1248 of ensuring that this is set up), then sets up the set of signals
1249 and faults that are to be traced.
1253 If proc_init_failed ever gets called, control returns to the command
1254 processing loop via the standard error handling code.
1259 procfs_init_inferior (pid
)
1263 push_target (&procfs_ops
);
1265 if (!open_proc_file (pid
, &pi
, O_RDWR
))
1267 proc_init_failed ("can't open process file");
1271 memset ((char *) &pi
.prrun
, 0, sizeof (pi
.prrun
));
1272 prfillset (&pi
.prrun
.pr_trace
);
1273 procfs_notice_signals ();
1274 prfillset (&pi
.prrun
.pr_fault
);
1275 prdelset (&pi
.prrun
.pr_fault
, FLTPAGE
);
1276 if (ioctl (pi
.fd
, PIOCWSTOP
, &pi
.prstatus
) < 0)
1278 proc_init_failed ("PIOCWSTOP failed");
1280 else if (ioctl (pi
.fd
, PIOCSFAULT
, &pi
.prrun
.pr_fault
) < 0)
1282 proc_init_failed ("PIOCSFAULT failed");
1291 procfs_notice_signals
1295 static void procfs_notice_signals (void);
1299 When the user changes the state of gdb's signal handling via the
1300 "handle" command, this function gets called to see if any change
1301 in the /proc interface is required. It is also called internally
1302 by other /proc interface functions to initialize the state of
1303 the traced signal set.
1305 One thing it does is that signals for which the state is "nostop",
1306 "noprint", and "pass", have their trace bits reset in the pr_trace
1307 field, so that they are no longer traced. This allows them to be
1308 delivered directly to the inferior without the debugger ever being
1313 procfs_notice_signals ()
1319 for (signo
= 0; signo
< NSIG
; signo
++)
1321 if (signal_stop_state (signo
) == 0 &&
1322 signal_print_state (signo
) == 0 &&
1323 signal_pass_state (signo
) == 1)
1325 prdelset (&pi
.prrun
.pr_trace
, signo
);
1329 praddset (&pi
.prrun
.pr_trace
, signo
);
1332 if (ioctl (pi
.fd
, PIOCSTRACE
, &pi
.prrun
.pr_trace
))
1334 print_sys_errmsg ("PIOCSTRACE failed", errno
);
1343 proc_set_exec_trap -- arrange for exec'd child to halt at startup
1347 void proc_set_exec_trap (void)
1351 This function is called in the child process when starting up
1352 an inferior, prior to doing the exec of the actual inferior.
1353 It sets the child process's exitset to make exit from the exec
1354 system call an event of interest to stop on, and then simply
1355 returns. The child does the exec, the system call returns, and
1356 the child stops at the first instruction, ready for the gdb
1357 parent process to take control of it.
1361 We need to use all local variables since the child may be sharing
1362 it's data space with the parent, if vfork was used rather than
1365 Also note that we want to turn off the inherit-on-fork flag in
1366 the child process so that any grand-children start with all
1367 tracing flags cleared.
1371 proc_set_exec_trap ()
1374 auto char procname
[32];
1377 sprintf (procname
, PROC_NAME_FMT
, getpid ());
1378 if ((fd
= open (procname
, O_RDWR
)) < 0)
1384 premptyset (&exitset
);
1387 Not all systems with /proc have all the exec* syscalls with the same
1388 names. On the SGI, for example, there is no SYS_exec, but there
1389 *is* a SYS_execv. So, we try to account for that. */
1392 praddset (&exitset
, SYS_exec
);
1395 praddset (&exitset
, SYS_execve
);
1398 praddset(&exitset
, SYS_execv
);
1401 if (ioctl (fd
, PIOCSEXIT
, &exitset
) < 0)
1408 /* Turn off inherit-on-fork flag so that all grand-children of gdb
1409 start with tracing flags cleared. */
1411 #if defined (PIOCRESET) /* New method */
1415 ioctl (fd
, PIOCRESET
, &pr_flags
);
1418 #if defined (PIOCRFORK) /* Original method */
1419 ioctl (fd
, PIOCRFORK
, NULL
);
1423 /* Turn on run-on-last-close flag so that this process will not hang
1424 if GDB goes away for some reason. */
1426 #if defined (PIOCSET) /* New method */
1430 (void) ioctl (fd
, PIOCSET
, &pr_flags
);
1433 #if defined (PIOCSRLC) /* Original method */
1434 (void) ioctl (fd
, PIOCSRLC
, 0);
1443 proc_iterate_over_mappings -- call function for every mapped space
1447 int proc_iterate_over_mappings (int (*func)())
1451 Given a pointer to a function, call that function for every
1452 mapped address space, passing it an open file descriptor for
1453 the file corresponding to that mapped address space (if any)
1454 and the base address of the mapped space. Quit when we hit
1455 the end of the mappings or the function returns nonzero.
1459 proc_iterate_over_mappings (func
)
1460 int (*func
) PARAMS ((int, CORE_ADDR
));
1465 struct prmap
*prmaps
;
1466 struct prmap
*prmap
;
1468 if (pi
.valid
&& (ioctl (pi
.fd
, PIOCNMAP
, &nmap
) == 0))
1470 prmaps
= (struct prmap
*) alloca ((nmap
+ 1) * sizeof (*prmaps
));
1471 if (ioctl (pi
.fd
, PIOCMAP
, prmaps
) == 0)
1473 for (prmap
= prmaps
; prmap
-> pr_size
&& funcstat
== 0; ++prmap
)
1475 fd
= proc_address_to_fd ((CORE_ADDR
) prmap
-> pr_vaddr
, 0);
1476 funcstat
= (*func
) (fd
, (CORE_ADDR
) prmap
-> pr_vaddr
);
1484 #if 0 /* Currently unused */
1489 proc_base_address -- find base address for segment containing address
1493 CORE_ADDR proc_base_address (CORE_ADDR addr)
1497 Given an address of a location in the inferior, find and return
1498 the base address of the mapped segment containing that address.
1500 This is used for example, by the shared library support code,
1501 where we have the pc value for some location in the shared library
1502 where we are stopped, and need to know the base address of the
1503 segment containing that address.
1507 proc_base_address (addr
)
1511 struct prmap
*prmaps
;
1512 struct prmap
*prmap
;
1513 CORE_ADDR baseaddr
= 0;
1515 if (pi
.valid
&& (ioctl (pi
.fd
, PIOCNMAP
, &nmap
) == 0))
1517 prmaps
= (struct prmap
*) alloca ((nmap
+ 1) * sizeof (*prmaps
));
1518 if (ioctl (pi
.fd
, PIOCMAP
, prmaps
) == 0)
1520 for (prmap
= prmaps
; prmap
-> pr_size
; ++prmap
)
1522 if ((prmap
-> pr_vaddr
<= (caddr_t
) addr
) &&
1523 (prmap
-> pr_vaddr
+ prmap
-> pr_size
> (caddr_t
) addr
))
1525 baseaddr
= (CORE_ADDR
) prmap
-> pr_vaddr
;
1540 proc_address_to_fd -- return open fd for file mapped to address
1544 int proc_address_to_fd (CORE_ADDR addr, complain)
1548 Given an address in the current inferior's address space, use the
1549 /proc interface to find an open file descriptor for the file that
1550 this address was mapped in from. Return -1 if there is no current
1551 inferior. Print a warning message if there is an inferior but
1552 the address corresponds to no file (IE a bogus address).
1557 proc_address_to_fd (addr
, complain
)
1565 if ((fd
= ioctl (pi
.fd
, PIOCOPENM
, (caddr_t
*) &addr
)) < 0)
1569 print_sys_errmsg (pi
.pathname
, errno
);
1570 warning ("can't find mapped file for address 0x%x", addr
);
1578 /* Attach to process PID, then initialize for debugging it
1579 and wait for the trace-trap that results from attaching. */
1582 procfs_attach (args
, from_tty
)
1590 error_no_arg ("process-id to attach");
1594 if (pid
== getpid()) /* Trying to masturbate? */
1595 error ("I refuse to debug myself!");
1599 exec_file
= (char *) get_exec_file (0);
1602 printf ("Attaching program `%s', pid %d\n", exec_file
, pid
);
1604 printf ("Attaching pid %d\n", pid
);
1611 push_target (&procfs_ops
);
1615 /* Take a program previously attached to and detaches it.
1616 The program resumes execution and will no longer stop
1617 on signals, etc. We'd better not have left any breakpoints
1618 in the program or it'll die when it hits one. For this
1619 to work, it may be necessary for the process to have been
1620 previously attached. It *might* work if the program was
1621 started via the normal ptrace (PTRACE_TRACEME). */
1624 procfs_detach (args
, from_tty
)
1632 char *exec_file
= get_exec_file (0);
1635 printf ("Detaching program: %s pid %d\n",
1636 exec_file
, inferior_pid
);
1640 siggnal
= atoi (args
);
1642 do_detach (siggnal
);
1644 unpush_target (&procfs_ops
); /* Pop out of handling an inferior */
1647 /* Get ready to modify the registers array. On machines which store
1648 individual registers, this doesn't need to do anything. On machines
1649 which store all the registers in one fell swoop, this makes sure
1650 that registers contains all the registers from the program being
1654 procfs_prepare_to_store ()
1656 #ifdef CHILD_PREPARE_TO_STORE
1657 CHILD_PREPARE_TO_STORE ();
1661 /* Print status information about what we're accessing. */
1664 procfs_files_info (ignore
)
1665 struct target_ops
*ignore
;
1667 printf ("\tUsing the running image of %s process %d via /proc.\n",
1668 attach_flag
? "attached": "child", inferior_pid
);
1673 procfs_open (arg
, from_tty
)
1677 error ("Use the \"run\" command to start a Unix child process.");
1684 do_attach -- attach to an already existing process
1688 int do_attach (int pid)
1692 Attach to an already existing process with the specified process
1693 id. If the process is not already stopped, query whether to
1698 The option of stopping at attach time is specific to the /proc
1699 versions of gdb. Versions using ptrace force the attachee
1700 to stop. (I have changed this version to do so, too. All you
1701 have to do is "continue" to make it go on. -- gnu@cygnus.com)
1711 if (!open_proc_file (pid
, &pi
, O_RDWR
))
1713 perror_with_name (pi
.pathname
);
1717 /* Get current status of process and if it is not already stopped,
1718 then stop it. Remember whether or not it was stopped when we first
1721 if (ioctl (pi
.fd
, PIOCSTATUS
, &pi
.prstatus
) < 0)
1723 print_sys_errmsg (pi
.pathname
, errno
);
1724 close_proc_file (&pi
);
1725 error ("PIOCSTATUS failed");
1727 if (pi
.prstatus
.pr_flags
& (PR_STOPPED
| PR_ISTOP
))
1734 if (1 || query ("Process is currently running, stop it? "))
1736 /* Make it run again when we close it. */
1737 #if defined (PIOCSET) /* New method */
1741 result
= ioctl (pi
.fd
, PIOCSET
, &pr_flags
);
1744 #if defined (PIOCSRLC) /* Original method */
1745 result
= ioctl (pi
.fd
, PIOCSRLC
, 0);
1750 print_sys_errmsg (pi
.pathname
, errno
);
1751 close_proc_file (&pi
);
1752 error ("PIOCSRLC or PIOCSET failed");
1754 if (ioctl (pi
.fd
, PIOCSTOP
, &pi
.prstatus
) < 0)
1756 print_sys_errmsg (pi
.pathname
, errno
);
1757 close_proc_file (&pi
);
1758 error ("PIOCSTOP failed");
1760 pi
.nopass_next_sigstop
= 1;
1764 printf ("Ok, gdb will wait for process %u to stop.\n", pid
);
1768 /* Remember some things about the inferior that we will, or might, change
1769 so that we can restore them when we detach. */
1771 ioctl (pi
.fd
, PIOCGTRACE
, &pi
.saved_trace
);
1772 ioctl (pi
.fd
, PIOCGHOLD
, &pi
.saved_sighold
);
1773 ioctl (pi
.fd
, PIOCGFAULT
, &pi
.saved_fltset
);
1774 ioctl (pi
.fd
, PIOCGENTRY
, &pi
.saved_entryset
);
1775 ioctl (pi
.fd
, PIOCGEXIT
, &pi
.saved_exitset
);
1777 /* Set up trace and fault sets, as gdb expects them. */
1779 memset (&pi
.prrun
, 0, sizeof (pi
.prrun
));
1780 prfillset (&pi
.prrun
.pr_trace
);
1781 procfs_notice_signals ();
1782 prfillset (&pi
.prrun
.pr_fault
);
1783 prdelset (&pi
.prrun
.pr_fault
, FLTPAGE
);
1784 if (ioctl (pi
.fd
, PIOCSFAULT
, &pi
.prrun
.pr_fault
))
1786 print_sys_errmsg ("PIOCSFAULT failed", errno
);
1788 if (ioctl (pi
.fd
, PIOCSTRACE
, &pi
.prrun
.pr_trace
))
1790 print_sys_errmsg ("PIOCSTRACE failed", errno
);
1800 do_detach -- detach from an attached-to process
1804 void do_detach (int signal)
1808 Detach from the current attachee.
1810 If signal is non-zero, the attachee is started running again and sent
1811 the specified signal.
1813 If signal is zero and the attachee was not already stopped when we
1814 attached to it, then we make it runnable again when we detach.
1816 Otherwise, we query whether or not to make the attachee runnable
1817 again, since we may simply want to leave it in the state it was in
1820 We report any problems, but do not consider them errors, since we
1821 MUST detach even if some things don't seem to go right. This may not
1822 be the ideal situation. (FIXME).
1833 set_proc_siginfo (&pi
, signal
);
1835 if (ioctl (pi
.fd
, PIOCSEXIT
, &pi
.saved_exitset
) < 0)
1837 print_sys_errmsg (pi
.pathname
, errno
);
1838 printf ("PIOCSEXIT failed.\n");
1840 if (ioctl (pi
.fd
, PIOCSENTRY
, &pi
.saved_entryset
) < 0)
1842 print_sys_errmsg (pi
.pathname
, errno
);
1843 printf ("PIOCSENTRY failed.\n");
1845 if (ioctl (pi
.fd
, PIOCSTRACE
, &pi
.saved_trace
) < 0)
1847 print_sys_errmsg (pi
.pathname
, errno
);
1848 printf ("PIOCSTRACE failed.\n");
1850 if (ioctl (pi
.fd
, PIOCSHOLD
, &pi
.saved_sighold
) < 0)
1852 print_sys_errmsg (pi
.pathname
, errno
);
1853 printf ("PIOSCHOLD failed.\n");
1855 if (ioctl (pi
.fd
, PIOCSFAULT
, &pi
.saved_fltset
) < 0)
1857 print_sys_errmsg (pi
.pathname
, errno
);
1858 printf ("PIOCSFAULT failed.\n");
1860 if (ioctl (pi
.fd
, PIOCSTATUS
, &pi
.prstatus
) < 0)
1862 print_sys_errmsg (pi
.pathname
, errno
);
1863 printf ("PIOCSTATUS failed.\n");
1867 if (signal
|| (pi
.prstatus
.pr_flags
& (PR_STOPPED
| PR_ISTOP
)))
1869 if (signal
|| !pi
.was_stopped
||
1870 query ("Was stopped when attached, make it runnable again? "))
1872 /* Clear any fault that might have stopped it. */
1873 if (ioctl (pi
.fd
, PIOCCFAULT
, 0))
1875 print_sys_errmsg (pi
.pathname
, errno
);
1876 printf ("PIOCCFAULT failed.\n");
1879 /* Make it run again when we close it. */
1880 #if defined (PIOCSET) /* New method */
1884 result
= ioctl (pi
.fd
, PIOCSET
, &pr_flags
);
1887 #if defined (PIOCSRLC) /* Original method */
1888 result
= ioctl (pi
.fd
, PIOCSRLC
, 0);
1893 print_sys_errmsg (pi
.pathname
, errno
);
1894 printf ("PIOCSRLC or PIOCSET failed.\n");
1899 close_proc_file (&pi
);
1907 procfs_wait -- emulate wait() as much as possible
1908 Wait for child to do something. Return pid of child, or -1 in case
1909 of error; store status through argument pointer STATUS.
1914 int procfs_wait (int *statloc)
1918 Try to emulate wait() as much as possible. Not sure why we can't
1919 just use wait(), but it seems to have problems when applied to a
1920 process being controlled with the /proc interface.
1924 We have a race problem here with no obvious solution. We need to let
1925 the inferior run until it stops on an event of interest, which means
1926 that we need to use the PIOCWSTOP ioctl. However, we cannot use this
1927 ioctl if the process is already stopped on something that is not an
1928 event of interest, or the call will hang indefinitely. Thus we first
1929 use PIOCSTATUS to see if the process is not stopped. If not, then we
1930 use PIOCWSTOP. But during the window between the two, if the process
1931 stops for any reason that is not an event of interest (such as a job
1932 control signal) then gdb will hang. One possible workaround is to set
1933 an alarm to wake up every minute of so and check to see if the process
1934 is still running, and if so, then reissue the PIOCWSTOP. But this is
1935 a real kludge, so has not been implemented. FIXME: investigate
1938 FIXME: Investigate why wait() seems to have problems with programs
1939 being control by /proc routines.
1944 procfs_wait (statloc
)
1953 if (ioctl (pi
.fd
, PIOCSTATUS
, &pi
.prstatus
) < 0)
1957 else if (!(pi
.prstatus
.pr_flags
& (PR_STOPPED
| PR_ISTOP
)))
1960 set_sigint_trap(); /* Causes SIGINT to be passed on to the
1961 attached process. */
1963 if (ioctl (pi
.fd
, PIOCWSTOP
, &pi
.prstatus
) < 0)
1969 clear_sigint_trap();
1973 if (errno
== ENOENT
)
1975 rtnval
= wait (&statval
);
1976 if (rtnval
!= inferior_pid
)
1978 print_sys_errmsg (pi
.pathname
, errno
);
1979 error ("PIOCWSTOP, wait failed, returned %d", rtnval
);
1985 print_sys_errmsg (pi
.pathname
, errno
);
1986 error ("PIOCSTATUS or PIOCWSTOP failed.");
1990 else if (pi
.prstatus
.pr_flags
& (PR_STOPPED
| PR_ISTOP
))
1992 rtnval
= pi
.prstatus
.pr_pid
;
1993 why
= pi
.prstatus
.pr_why
;
1994 what
= pi
.prstatus
.pr_what
;
1995 if (why
== PR_SIGNALLED
)
1997 statval
= (what
<< 8) | 0177;
1999 else if ((why
== PR_SYSEXIT
)
2008 || what
== SYS_execve
2011 || what
== SYS_execv
2015 statval
= (SIGTRAP
<< 8) | 0177;
2017 else if (why
== PR_REQUESTED
)
2019 statval
= (SIGSTOP
<< 8) | 0177;
2021 else if (why
== PR_JOBCONTROL
)
2023 statval
= (what
<< 8) | 0177;
2025 else if (why
== PR_FAULTED
)
2031 statval
= (SIGILL
<< 8) | 0177;
2035 statval
= (SIGTRAP
<< 8) | 0177;
2040 statval
= (SIGSEGV
<< 8) | 0177;
2045 statval
= (SIGFPE
<< 8) | 0177;
2047 case FLTPAGE
: /* Recoverable page fault */
2050 error ("PIOCWSTOP, unknown why %d, what %d", why
, what
);
2057 error ("PIOCWSTOP, unknown why %d, what %d", why
, what
);
2063 error ("PIOCWSTOP, stopped for unknown/unhandled reason, flags %#x",
2064 pi
.prstatus
.pr_flags
);
2073 if (rtnval
== -1) /* No more children to wait for */
2075 fprintf (stderr
, "Child process unexpectedly missing.\n");
2076 *statloc
= 42; /* Claim it exited with signal 42 */
2087 set_proc_siginfo - set a process's current signal info
2091 void set_proc_siginfo (struct procinfo *pip, int signo);
2095 Given a pointer to a process info struct in PIP and a signal number
2096 in SIGNO, set the process's current signal and its associated signal
2097 information. The signal will be delivered to the process immediately
2098 after execution is resumed, even if it is being held. In addition,
2099 this particular delivery will not cause another PR_SIGNALLED stop
2100 even if the signal is being traced.
2102 If we are not delivering the same signal that the prstatus siginfo
2103 struct contains information about, then synthesize a siginfo struct
2104 to match the signal we are doing to deliver, make it of the type
2105 "generated by a user process", and send this synthesized copy. When
2106 used to set the inferior's signal state, this will be required if we
2107 are not currently stopped because of a traced signal, or if we decide
2108 to continue with a different signal.
2110 Note that when continuing the inferior from a stop due to receipt
2111 of a traced signal, we either have set PRCSIG to clear the existing
2112 signal, or we have to call this function to do a PIOCSSIG with either
2113 the existing siginfo struct from pr_info, or one we have synthesized
2114 appropriately for the signal we want to deliver. Otherwise if the
2115 signal is still being traced, the inferior will immediately stop
2118 See siginfo(5) for more details.
2122 set_proc_siginfo (pip
, signo
)
2123 struct procinfo
*pip
;
2126 struct siginfo newsiginfo
;
2127 struct siginfo
*sip
;
2131 if (signo
== pip
-> prstatus
.pr_info
.si_signo
)
2133 sip
= &pip
-> prstatus
.pr_info
;
2137 memset ((char *) &newsiginfo
, 0, sizeof (newsiginfo
));
2139 sip
-> si_signo
= signo
;
2141 sip
-> si_errno
= 0;
2142 sip
-> si_pid
= getpid ();
2143 sip
-> si_uid
= getuid ();
2145 if (ioctl (pip
-> fd
, PIOCSSIG
, sip
) < 0)
2147 print_sys_errmsg (pip
-> pathname
, errno
);
2148 warning ("PIOCSSIG failed");
2153 /* Resume execution of the inferior process. If STEP is nozero, then
2154 just single step it. If SIGNAL is nonzero, restart it with that
2155 signal activated. */
2158 procfs_resume (step
, signo
)
2165 pi
.prrun
.pr_flags
= PRSTRACE
| PRSFAULT
| PRCFAULT
;
2168 /* It should not be necessary. If the user explicitly changes the value,
2169 value_assign calls write_register_bytes, which writes it. */
2170 /* It may not be absolutely necessary to specify the PC value for
2171 restarting, but to be safe we use the value that gdb considers
2172 to be current. One case where this might be necessary is if the
2173 user explicitly changes the PC value that gdb considers to be
2174 current. FIXME: Investigate if this is necessary or not. */
2176 #ifdef PRSVADDR_BROKEN
2177 /* Can't do this under Solaris running on a Sparc, as there seems to be no
2178 place to put nPC. In fact, if you use this, nPC seems to be set to some
2179 random garbage. We have to rely on the fact that PC and nPC have been
2180 written previously via PIOCSREG during a register flush. */
2182 pi
.prrun
.pr_vaddr
= (caddr_t
) *(int *) ®isters
[REGISTER_BYTE (PC_REGNUM
)];
2183 pi
.prrun
.pr_flags
!= PRSVADDR
;
2187 if (signo
== SIGSTOP
&& pi
.nopass_next_sigstop
)
2188 /* When attaching to a child process, if we forced it to stop with
2189 a PIOCSTOP, then we will have set the nopass_next_sigstop flag.
2190 Upon resuming the first time after such a stop, we explicitly
2191 inhibit sending it another SIGSTOP, which would be the normal
2192 result of default signal handling. One potential drawback to
2193 this is that we will also ignore any attempt to by the user
2194 to explicitly continue after the attach with a SIGSTOP. Ultimately
2195 this problem should be dealt with by making the routines that
2196 deal with the inferior a little smarter, and possibly even allow
2197 an inferior to continue running at the same time as gdb. (FIXME?) */
2199 else if (signo
== SIGTSTP
2200 && pi
.prstatus
.pr_cursig
== SIGTSTP
2201 && pi
.prstatus
.pr_action
.sa_handler
== SIG_DFL
)
2203 /* We are about to pass the inferior a SIGTSTP whose action is
2204 SIG_DFL. The SIG_DFL action for a SIGTSTP is to stop
2205 (notifying the parent via wait()), and then keep going from the
2206 same place when the parent is ready for you to keep going. So
2207 under the debugger, it should do nothing (as if the program had
2208 been stopped and then later resumed. Under ptrace, this
2209 happens for us, but under /proc, the system obligingly stops
2210 the process, and wait_for_inferior would have no way of
2211 distinguishing that type of stop (which indicates that we
2212 should just start it again), with a stop due to the pr_trace
2213 field of the prrun_t struct.
2215 Note that if the SIGTSTP is being caught, we *do* need to pass it,
2216 because the handler needs to get executed. */
2219 signal_to_pass
= signo
;
2223 set_proc_siginfo (&pi
, signal_to_pass
);
2227 pi
.prrun
.pr_flags
|= PRCSIG
;
2229 pi
.nopass_next_sigstop
= 0;
2232 pi
.prrun
.pr_flags
|= PRSTEP
;
2234 if (ioctl (pi
.fd
, PIOCRUN
, &pi
.prrun
) != 0)
2236 perror_with_name (pi
.pathname
);
2245 procfs_fetch_registers -- fetch current registers from inferior
2249 void procfs_fetch_registers (int regno)
2253 Read the current values of the inferior's registers, both the
2254 general register set and floating point registers (if supported)
2255 and update gdb's idea of their current values.
2260 procfs_fetch_registers (regno
)
2263 if (ioctl (pi
.fd
, PIOCGREG
, &pi
.gregset
) != -1)
2265 supply_gregset (&pi
.gregset
);
2267 #if defined (FP0_REGNUM)
2268 if (ioctl (pi
.fd
, PIOCGFPREG
, &pi
.fpregset
) != -1)
2270 supply_fpregset (&pi
.fpregset
);
2279 proc_init_failed - called whenever /proc access initialization fails
2283 static void proc_init_failed (char *why)
2287 This function is called whenever initialization of access to a /proc
2288 entry fails. It prints a suitable error message, does some cleanup,
2289 and then invokes the standard error processing routine which dumps
2290 us back into the command loop.
2294 proc_init_failed (why
)
2297 print_sys_errmsg (pi
.pathname
, errno
);
2298 kill (pi
.pid
, SIGKILL
);
2299 close_proc_file (&pi
);
2308 close_proc_file - close any currently open /proc entry
2312 static void close_proc_file (struct procinfo *pip)
2316 Close any currently open /proc entry and mark the process information
2317 entry as invalid. In order to ensure that we don't try to reuse any
2318 stale information, the pid, fd, and pathnames are explicitly
2319 invalidated, which may be overkill.
2324 close_proc_file (pip
)
2325 struct procinfo
*pip
;
2333 if (pip
-> pathname
)
2335 free (pip
-> pathname
);
2336 pip
-> pathname
= NULL
;
2345 open_proc_file - open a /proc entry for a given process id
2349 static int open_proc_file (int pid, struct procinfo *pip, int mode)
2353 Given a process id and a mode, close the existing open /proc
2354 entry (if any) and open one for the new process id, in the
2355 specified mode. Once it is open, then mark the local process
2356 information structure as valid, which guarantees that the pid,
2357 fd, and pathname fields match an open /proc entry. Returns
2358 zero if the open fails, nonzero otherwise.
2360 Note that the pathname is left intact, even when the open fails,
2361 so that callers can use it to construct meaningful error messages
2362 rather than just "file open failed".
2366 open_proc_file (pid
, pip
, mode
)
2368 struct procinfo
*pip
;
2371 pip
-> valid
= 0; /* FIXME, what is this? ?! */
2376 if (pip
-> pathname
== NULL
)
2378 pip
-> pathname
= xmalloc (32);
2380 sprintf (pip
-> pathname
, PROC_NAME_FMT
, pid
);
2381 if ((pip
-> fd
= open (pip
-> pathname
, mode
)) >= 0)
2386 return (pip
-> valid
);
2390 mappingflags (flags
)
2393 static char asciiflags
[8];
2395 strcpy (asciiflags
, "-------");
2396 #if defined (MA_PHYS)
2397 if (flags
& MA_PHYS
) asciiflags
[0] = 'd';
2399 if (flags
& MA_STACK
) asciiflags
[1] = 's';
2400 if (flags
& MA_BREAK
) asciiflags
[2] = 'b';
2401 if (flags
& MA_SHARED
) asciiflags
[3] = 's';
2402 if (flags
& MA_READ
) asciiflags
[4] = 'r';
2403 if (flags
& MA_WRITE
) asciiflags
[5] = 'w';
2404 if (flags
& MA_EXEC
) asciiflags
[6] = 'x';
2405 return (asciiflags
);
2409 info_proc_flags (pip
, summary
)
2410 struct procinfo
*pip
;
2413 struct trans
*transp
;
2415 printf_filtered ("%-32s", "Process status flags:");
2418 printf_filtered ("\n\n");
2420 for (transp
= pr_flag_table
; transp
-> name
!= NULL
; transp
++)
2422 if (pip
-> prstatus
.pr_flags
& transp
-> value
)
2426 printf_filtered ("%s ", transp
-> name
);
2430 printf_filtered ("\t%-16s %s.\n", transp
-> name
, transp
-> desc
);
2434 printf_filtered ("\n");
2438 info_proc_stop (pip
, summary
)
2439 struct procinfo
*pip
;
2442 struct trans
*transp
;
2446 why
= pip
-> prstatus
.pr_why
;
2447 what
= pip
-> prstatus
.pr_what
;
2449 if (pip
-> prstatus
.pr_flags
& PR_STOPPED
)
2451 printf_filtered ("%-32s", "Reason for stopping:");
2454 printf_filtered ("\n\n");
2456 for (transp
= pr_why_table
; transp
-> name
!= NULL
; transp
++)
2458 if (why
== transp
-> value
)
2462 printf_filtered ("%s ", transp
-> name
);
2466 printf_filtered ("\t%-16s %s.\n",
2467 transp
-> name
, transp
-> desc
);
2473 /* Use the pr_why field to determine what the pr_what field means, and
2474 print more information. */
2479 /* pr_what is unused for this case */
2485 printf_filtered ("%s ", signalname (what
));
2489 printf_filtered ("\t%-16s %s.\n", signalname (what
),
2490 safe_strsignal (what
));
2496 printf_filtered ("%s ", syscallname (what
));
2500 printf_filtered ("\t%-16s %s.\n", syscallname (what
),
2501 "Entered this system call");
2507 printf_filtered ("%s ", syscallname (what
));
2511 printf_filtered ("\t%-16s %s.\n", syscallname (what
),
2512 "Returned from this system call");
2518 printf_filtered ("%s ",
2519 lookupname (faults_table
, what
, "fault"));
2523 printf_filtered ("\t%-16s %s.\n",
2524 lookupname (faults_table
, what
, "fault"),
2525 lookupdesc (faults_table
, what
));
2529 printf_filtered ("\n");
2534 info_proc_siginfo (pip
, summary
)
2535 struct procinfo
*pip
;
2538 struct siginfo
*sip
;
2540 if ((pip
-> prstatus
.pr_flags
& PR_STOPPED
) &&
2541 (pip
-> prstatus
.pr_why
== PR_SIGNALLED
||
2542 pip
-> prstatus
.pr_why
== PR_FAULTED
))
2544 printf_filtered ("%-32s", "Additional signal/fault info:");
2545 sip
= &pip
-> prstatus
.pr_info
;
2548 printf_filtered ("%s ", signalname (sip
-> si_signo
));
2549 if (sip
-> si_errno
> 0)
2551 printf_filtered ("%s ", errnoname (sip
-> si_errno
));
2553 if (sip
-> si_code
<= 0)
2555 printf_filtered ("sent by pid %d, uid %d ", sip
-> si_pid
,
2560 printf_filtered ("%s ", sigcodename (sip
));
2561 if ((sip
-> si_signo
== SIGILL
) ||
2562 (sip
-> si_signo
== SIGFPE
) ||
2563 (sip
-> si_signo
== SIGSEGV
) ||
2564 (sip
-> si_signo
== SIGBUS
))
2566 printf_filtered ("addr=%#x ", sip
-> si_addr
);
2568 else if ((sip
-> si_signo
== SIGCHLD
))
2570 printf_filtered ("child pid %u, status %u ",
2574 else if ((sip
-> si_signo
== SIGPOLL
))
2576 printf_filtered ("band %u ", sip
-> si_band
);
2582 printf_filtered ("\n\n");
2583 printf_filtered ("\t%-16s %s.\n", signalname (sip
-> si_signo
),
2584 safe_strsignal (sip
-> si_signo
));
2585 if (sip
-> si_errno
> 0)
2587 printf_filtered ("\t%-16s %s.\n",
2588 errnoname (sip
-> si_errno
),
2589 safe_strerror (sip
-> si_errno
));
2591 if (sip
-> si_code
<= 0)
2593 printf_filtered ("\t%-16u %s\n", sip
-> si_pid
,
2594 "PID of process sending signal");
2595 printf_filtered ("\t%-16u %s\n", sip
-> si_uid
,
2596 "UID of process sending signal");
2600 printf_filtered ("\t%-16s %s.\n", sigcodename (sip
),
2602 if ((sip
-> si_signo
== SIGILL
) ||
2603 (sip
-> si_signo
== SIGFPE
))
2605 printf_filtered ("\t%-16#x %s.\n", sip
-> si_addr
,
2606 "Address of faulting instruction");
2608 else if ((sip
-> si_signo
== SIGSEGV
) ||
2609 (sip
-> si_signo
== SIGBUS
))
2611 printf_filtered ("\t%-16#x %s.\n", sip
-> si_addr
,
2612 "Address of faulting memory reference");
2614 else if ((sip
-> si_signo
== SIGCHLD
))
2616 printf_filtered ("\t%-16u %s.\n", sip
-> si_pid
,
2617 "Child process ID");
2618 printf_filtered ("\t%-16u %s.\n", sip
-> si_status
,
2619 "Child process exit value or signal");
2621 else if ((sip
-> si_signo
== SIGPOLL
))
2623 printf_filtered ("\t%-16u %s.\n", sip
-> si_band
,
2624 "Band event for POLL_{IN,OUT,MSG}");
2628 printf_filtered ("\n");
2633 info_proc_syscalls (pip
, summary
)
2634 struct procinfo
*pip
;
2642 #if 0 /* FIXME: Needs to use gdb-wide configured info about system calls. */
2643 if (pip
-> prstatus
.pr_flags
& PR_ASLEEP
)
2645 int syscallnum
= pip
-> prstatus
.pr_reg
[R_D0
];
2648 printf_filtered ("%-32s", "Sleeping in system call:");
2649 printf_filtered ("%s", syscallname (syscallnum
));
2653 printf_filtered ("Sleeping in system call '%s'.\n",
2654 syscallname (syscallnum
));
2659 if (ioctl (pip
-> fd
, PIOCGENTRY
, &pip
-> entryset
) < 0)
2661 print_sys_errmsg (pip
-> pathname
, errno
);
2662 error ("PIOCGENTRY failed");
2665 if (ioctl (pip
-> fd
, PIOCGEXIT
, &pip
-> exitset
) < 0)
2667 print_sys_errmsg (pip
-> pathname
, errno
);
2668 error ("PIOCGEXIT failed");
2671 printf_filtered ("System call tracing information:\n\n");
2673 printf_filtered ("\t%-12s %-8s %-8s\n",
2677 for (syscallnum
= 0; syscallnum
< MAX_SYSCALLS
; syscallnum
++)
2680 if (syscall_table
[syscallnum
] != NULL
)
2682 printf_filtered ("\t%-12s ", syscall_table
[syscallnum
]);
2683 printf_filtered ("%-8s ",
2684 prismember (&pip
-> entryset
, syscallnum
)
2686 printf_filtered ("%-8s ",
2687 prismember (&pip
-> exitset
, syscallnum
)
2689 printf_filtered ("\n");
2692 printf_filtered ("\n");
2701 static char locbuf
[32];
2703 name
= strsigno (signo
);
2706 sprintf (locbuf
, "Signal %d", signo
);
2710 sprintf (locbuf
, "%s (%d)", name
, signo
);
2720 static char locbuf
[32];
2722 name
= strerrno (errnum
);
2725 sprintf (locbuf
, "Errno %d", errnum
);
2729 sprintf (locbuf
, "%s (%d)", name
, errnum
);
2735 info_proc_signals (pip
, summary
)
2736 struct procinfo
*pip
;
2743 if (ioctl (pip
-> fd
, PIOCGTRACE
, &pip
-> trace
) < 0)
2745 print_sys_errmsg (pip
-> pathname
, errno
);
2746 error ("PIOCGTRACE failed");
2749 printf_filtered ("Disposition of signals:\n\n");
2750 printf_filtered ("\t%-15s %-8s %-8s %-8s %s\n\n",
2751 "Signal", "Trace", "Hold", "Pending", "Description");
2752 for (signo
= 0; signo
< NSIG
; signo
++)
2755 printf_filtered ("\t%-15s ", signalname (signo
));
2756 printf_filtered ("%-8s ",
2757 prismember (&pip
-> trace
, signo
)
2759 printf_filtered ("%-8s ",
2760 prismember (&pip
-> prstatus
.pr_sighold
, signo
)
2762 printf_filtered ("%-8s ",
2763 prismember (&pip
-> prstatus
.pr_sigpend
, signo
)
2765 printf_filtered (" %s\n", safe_strsignal (signo
));
2767 printf_filtered ("\n");
2772 info_proc_faults (pip
, summary
)
2773 struct procinfo
*pip
;
2776 struct trans
*transp
;
2780 if (ioctl (pip
-> fd
, PIOCGFAULT
, &pip
-> fltset
) < 0)
2782 print_sys_errmsg (pip
-> pathname
, errno
);
2783 error ("PIOCGFAULT failed");
2786 printf_filtered ("Current traced hardware fault set:\n\n");
2787 printf_filtered ("\t%-12s %-8s\n", "Fault", "Trace");
2789 for (transp
= faults_table
; transp
-> name
!= NULL
; transp
++)
2792 printf_filtered ("\t%-12s ", transp
-> name
);
2793 printf_filtered ("%-8s", prismember (&pip
-> fltset
, transp
-> value
)
2795 printf_filtered ("\n");
2797 printf_filtered ("\n");
2802 info_proc_mappings (pip
, summary
)
2803 struct procinfo
*pip
;
2807 struct prmap
*prmaps
;
2808 struct prmap
*prmap
;
2812 printf_filtered ("Mapped address spaces:\n\n");
2813 printf_filtered ("\t%10s %10s %10s %10s %7s\n",
2819 if (ioctl (pip
-> fd
, PIOCNMAP
, &nmap
) == 0)
2821 prmaps
= (struct prmap
*) alloca ((nmap
+ 1) * sizeof (*prmaps
));
2822 if (ioctl (pip
-> fd
, PIOCMAP
, prmaps
) == 0)
2824 for (prmap
= prmaps
; prmap
-> pr_size
; ++prmap
)
2826 printf_filtered ("\t%#10x %#10x %#10x %#10x %7s\n",
2828 prmap
-> pr_vaddr
+ prmap
-> pr_size
- 1,
2831 mappingflags (prmap
-> pr_mflags
));
2835 printf_filtered ("\n");
2843 info_proc -- implement the "info proc" command
2847 void info_proc (char *args, int from_tty)
2851 Implement gdb's "info proc" command by using the /proc interface
2852 to print status information about any currently running process.
2854 Examples of the use of "info proc" are:
2856 info proc (prints summary info for current inferior)
2857 info proc 123 (prints summary info for process with pid 123)
2858 info proc mappings (prints address mappings)
2859 info proc times (prints process/children times)
2860 info proc id (prints pid, ppid, gid, sid, etc)
2861 FIXME: i proc id not implemented.
2862 info proc status (prints general process state info)
2863 FIXME: i proc status not implemented.
2864 info proc signals (prints info about signal handling)
2865 info proc all (prints all info)
2870 info_proc (args
, from_tty
)
2875 struct procinfo pii
;
2876 struct procinfo
*pip
;
2877 struct cleanup
*old_chain
;
2891 old_chain
= make_cleanup (null_cleanup
, 0);
2893 /* Default to using the current inferior if no pid specified */
2899 if ((argv
= buildargv (args
)) == NULL
)
2903 make_cleanup (freeargv
, (char *) argv
);
2905 while (*argv
!= NULL
)
2907 argsize
= strlen (*argv
);
2908 if (argsize
>= 1 && strncmp (*argv
, "all", argsize
) == 0)
2913 else if (argsize
>= 2 && strncmp (*argv
, "faults", argsize
) == 0)
2918 else if (argsize
>= 2 && strncmp (*argv
, "flags", argsize
) == 0)
2923 else if (argsize
>= 1 && strncmp (*argv
, "id", argsize
) == 0)
2928 else if (argsize
>= 1 && strncmp (*argv
, "mappings", argsize
) == 0)
2933 else if (argsize
>= 2 && strncmp (*argv
, "signals", argsize
) == 0)
2938 else if (argsize
>= 2 && strncmp (*argv
, "status", argsize
) == 0)
2943 else if (argsize
>= 2 && strncmp (*argv
, "syscalls", argsize
) == 0)
2948 else if (argsize
>= 1 && strncmp (*argv
, "times", argsize
) == 0)
2953 else if ((pii
.pid
= atoi (*argv
)) > 0)
2957 memset (&pii
, 0, sizeof (pii
));
2958 if (!open_proc_file (pid
, pip
, O_RDONLY
))
2960 perror_with_name (pip
-> pathname
);
2963 make_cleanup (close_proc_file
, pip
);
2965 else if (**argv
!= '\000')
2967 error ("Unrecognized or ambiguous keyword `%s'.", *argv
);
2973 /* If we don't have a valid open process at this point, then we have no
2974 inferior or didn't specify a specific pid. */
2979 No process. Start debugging a program or specify an explicit process ID.");
2981 if (ioctl (pip
-> fd
, PIOCSTATUS
, &(pip
-> prstatus
)) < 0)
2983 print_sys_errmsg (pip
-> pathname
, errno
);
2984 error ("PIOCSTATUS failed");
2987 /* Print verbose information of the requested type(s), or just a summary
2988 of the information for all types. */
2990 printf_filtered ("\nInformation for %s:\n\n", pip
-> pathname
);
2991 if (summary
|| all
|| flags
)
2993 info_proc_flags (pip
, summary
);
2997 info_proc_stop (pip
, summary
);
2999 if (summary
|| all
|| signals
|| faults
)
3001 info_proc_siginfo (pip
, summary
);
3003 if (summary
|| all
|| syscalls
)
3005 info_proc_syscalls (pip
, summary
);
3007 if (summary
|| all
|| mappings
)
3009 info_proc_mappings (pip
, summary
);
3011 if (summary
|| all
|| signals
)
3013 info_proc_signals (pip
, summary
);
3015 if (summary
|| all
|| faults
)
3017 info_proc_faults (pip
, summary
);
3019 printf_filtered ("\n");
3021 /* All done, deal with closing any temporary process info structure,
3022 freeing temporary memory , etc. */
3024 do_cleanups (old_chain
);
3027 /* Fork an inferior process, and start debugging it with /proc. */
3030 procfs_create_inferior (exec_file
, allargs
, env
)
3035 fork_inferior (exec_file
, allargs
, env
,
3036 proc_set_exec_trap
, procfs_init_inferior
);
3037 /* We are at the first instruction we care about. */
3038 /* Pedal to the metal... */
3039 proceed ((CORE_ADDR
) -1, 0, 0);
3042 /* Clean up after the inferior dies. */
3045 procfs_mourn_inferior ()
3047 unpush_target (&procfs_ops
);
3048 generic_mourn_inferior ();
3051 /* Mark our target-struct as eligible for stray "run" and "attach" commands. */
3058 struct target_ops procfs_ops
= {
3059 "procfs", /* to_shortname */
3060 "Unix /proc child process", /* to_longname */
3061 "Unix /proc child process (started by the \"run\" command).", /* to_doc */
3062 procfs_open
, /* to_open */
3064 procfs_attach
, /* to_attach */
3065 procfs_detach
, /* to_detach */
3066 procfs_resume
, /* to_resume */
3067 procfs_wait
, /* to_wait */
3068 procfs_fetch_registers
, /* to_fetch_registers */
3069 procfs_store_registers
, /* to_store_registers */
3070 procfs_prepare_to_store
, /* to_prepare_to_store */
3071 procfs_xfer_memory
, /* to_xfer_memory */
3072 procfs_files_info
, /* to_files_info */
3073 memory_insert_breakpoint
, /* to_insert_breakpoint */
3074 memory_remove_breakpoint
, /* to_remove_breakpoint */
3075 terminal_init_inferior
, /* to_terminal_init */
3076 terminal_inferior
, /* to_terminal_inferior */
3077 terminal_ours_for_output
, /* to_terminal_ours_for_output */
3078 terminal_ours
, /* to_terminal_ours */
3079 child_terminal_info
, /* to_terminal_info */
3080 procfs_kill_inferior
, /* to_kill */
3082 0, /* to_lookup_symbol */
3083 procfs_create_inferior
, /* to_create_inferior */
3084 procfs_mourn_inferior
, /* to_mourn_inferior */
3085 procfs_can_run
, /* to_can_run */
3086 procfs_notice_signals
, /* to_notice_signals */
3087 process_stratum
, /* to_stratum */
3089 1, /* to_has_all_memory */
3090 1, /* to_has_memory */
3091 1, /* to_has_stack */
3092 1, /* to_has_registers */
3093 1, /* to_has_execution */
3095 0, /* sections_end */
3096 OPS_MAGIC
/* to_magic */
3103 _initialize_procfs -- initialize the process file system stuff
3107 void _initialize_procfs (void)
3111 Do required initializations during gdb startup for using the
3112 /proc file system interface.
3117 _initialize_procfs ()
3119 add_target (&procfs_ops
);
3121 add_info ("proc", info_proc
,
3122 "Show process status information using /proc entry.\n\
3123 Specify process id or use current inferior by default.\n\
3124 Specify keywords for detailed information; default is summary.\n\
3125 Keywords are: `all', `faults', `flags', `id', `mappings', `signals',\n\
3126 `status', `syscalls', and `times'.\n\
3127 Unambiguous abbreviations may be used.");
3129 init_syscall_table ();