2 * Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
3 * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
4 * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
5 * Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
6 * Copyright (c) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
7 * Linux for s390 port by D.J. Barrow
8 * <barrow_dj@mail.yahoo.com,djbarrow@de.ibm.com>
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. The name of the author may not be used to endorse or promote products
20 * derived from this software without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
43 #include <sys/ucontext.h>
48 #ifndef PTRACE_PEEKUSR
49 # define PTRACE_PEEKUSR PTRACE_PEEKUSER
51 #ifndef PTRACE_POKEUSR
52 # define PTRACE_POKEUSR PTRACE_POKEUSER
54 #elif defined(HAVE_LINUX_PTRACE_H)
56 #include <linux/ptrace.h>
63 # include <asm/ptrace_offsets.h>
68 # define fpq kernel_fpq
70 # define fpu kernel_fpu
78 #endif /* HAVE_ASM_REG_H */
85 #elif defined HAVE_ASM_SIGCONTEXT_H
86 #if !defined(IA64) && !defined(X86_64)
87 #include <asm/sigcontext.h>
88 #endif /* !IA64 && !X86_64 */
89 #else /* !HAVE_ASM_SIGCONTEXT_H */
91 struct sigcontext_struct {
92 unsigned short gs, __gsh;
93 unsigned short fs, __fsh;
94 unsigned short es, __esh;
95 unsigned short ds, __dsh;
104 unsigned long trapno;
107 unsigned short cs, __csh;
108 unsigned long eflags;
109 unsigned long esp_at_signal;
110 unsigned short ss, __ssh;
112 unsigned long oldmask;
119 unsigned long sc_mask;
120 unsigned long sc_usp;
125 unsigned short sc_sr;
127 unsigned short sc_formatvec;
131 #endif /* !HAVE_ASM_SIGCONTEXT_H */
141 char *signalent0[] = {
142 #include "signalent.h"
144 int nsignals0 = sizeof signalent0 / sizeof signalent0[0];
146 #if SUPPORTED_PERSONALITIES >= 2
147 char *signalent1[] = {
148 #include "signalent1.h"
150 int nsignals1 = sizeof signalent1 / sizeof signalent1[0];
151 #endif /* SUPPORTED_PERSONALITIES >= 2 */
153 #if SUPPORTED_PERSONALITIES >= 3
154 char *signalent2[] = {
155 #include "signalent2.h"
157 int nsignals2 = sizeof signalent2 / sizeof signalent2[0];
158 #endif /* SUPPORTED_PERSONALITIES >= 3 */
163 #if defined(SUNOS4) || defined(FREEBSD)
165 static struct xlat sigvec_flags[] = {
166 { SV_ONSTACK, "SV_ONSTACK" },
167 { SV_INTERRUPT, "SV_INTERRUPT" },
168 { SV_RESETHAND, "SV_RESETHAND" },
169 { SA_NOCLDSTOP, "SA_NOCLDSTOP" },
173 #endif /* SUNOS4 || FREEBSD */
175 #ifdef HAVE_SIGACTION
177 #if defined LINUX && defined I386
178 /* The libc headers do not define this constant since it should only be
179 used by the implementation. So wwe define it here. */
181 # define SA_RESTORER 0x04000000
185 static struct xlat sigact_flags[] = {
187 { SA_RESTORER, "SA_RESTORER" },
190 { SA_STACK, "SA_STACK" },
193 { SA_RESTART, "SA_RESTART" },
196 { SA_INTERRUPT, "SA_INTERRUPT" },
199 { SA_NOMASK, "SA_NOMASK" },
202 { SA_ONESHOT, "SA_ONESHOT" },
205 { SA_SIGINFO, "SA_SIGINFO" },
208 { SA_RESETHAND, "SA_RESETHAND" },
211 { SA_ONSTACK, "SA_ONSTACK" },
214 { SA_NODEFER, "SA_NODEFER" },
217 { SA_NOCLDSTOP, "SA_NOCLDSTOP" },
220 { SA_NOCLDWAIT, "SA_NOCLDWAIT" },
223 { _SA_BSDCALL, "_SA_BSDCALL" },
228 static struct xlat sigprocmaskcmds[] = {
229 { SIG_BLOCK, "SIG_BLOCK" },
230 { SIG_UNBLOCK, "SIG_UNBLOCK" },
231 { SIG_SETMASK, "SIG_SETMASK" },
233 { SIG_SETMASK32,"SIG_SETMASK32" },
238 #endif /* HAVE_SIGACTION */
240 /* Anonymous realtime signals. */
241 /* Under glibc 2.1, SIGRTMIN et al are functions, but __SIGRTMIN is a
242 constant. This is what we want. Otherwise, just use SIGRTMIN. */
245 #define __SIGRTMIN SIGRTMIN
246 #define __SIGRTMAX SIGRTMAX /* likewise */
255 if (sig < nsignals) {
256 return signalent[sig];
258 } else if (sig >= __SIGRTMIN && sig <= __SIGRTMAX) {
259 sprintf(buf, "SIGRT_%ld", (long)(sig - __SIGRTMIN));
261 #endif /* SIGRTMIN */
263 sprintf(buf, "%d", sig);
280 copy_sigset_len(tcp, addr, s, len)
286 if (len > sizeof(*s))
289 if (umoven(tcp, addr, len, (char *)s) < 0)
295 /* Original sigset is unsigned long */
296 #define copy_sigset(tcp, addr, s) copy_sigset_len(tcp, addr, s, sizeof(long))
298 #define copy_sigset(tcp, addr, s) copy_sigset_len(tcp, addr, s, sizeof(sigset_t))
302 sprintsigmask(s, mask, rt)
305 int rt; /* set might include realtime sigs */
310 static char outstr[8 * sizeof(sigset_t) * 8];
313 s = outstr + strlen(outstr);
318 maxsigs = __SIGRTMAX; /* instead */
320 for (i = 1; i < maxsigs; i++) {
321 if (sigismember(mask, i) == 1)
324 if (nsigs >= nsignals * 2 / 3) {
326 for (i = 1; i < maxsigs; i++) {
327 switch (sigismember(mask, i)) {
339 for (i = 1; i < maxsigs; i++) {
340 if (sigismember(mask, i) == 1) {
341 /* real-time signals on solaris don't have
345 sprintf(s, format, signalent[i] + 3);
349 sprintf(tsig, "%u", i);
350 sprintf(s, format, tsig);
362 printsigmask(mask, rt)
366 tprintf("%s", sprintsigmask("", mask, rt));
373 tprintf(signame(nr));
379 #define ILL_ILLOPC 1 /* illegal opcode */
380 #define ILL_ILLOPN 2 /* illegal operand */
381 #define ILL_ILLADR 3 /* illegal addressing mode */
382 #define ILL_ILLTRP 4 /* illegal trap */
383 #define ILL_PRVOPC 5 /* privileged opcode */
384 #define ILL_PRVREG 6 /* privileged register */
385 #define ILL_COPROC 7 /* coprocessor error */
386 #define ILL_BADSTK 8 /* internal stack error */
387 #define FPE_INTDIV 1 /* integer divide by zero */
388 #define FPE_INTOVF 2 /* integer overflow */
389 #define FPE_FLTDIV 3 /* floating point divide by zero */
390 #define FPE_FLTOVF 4 /* floating point overflow */
391 #define FPE_FLTUND 5 /* floating point underflow */
392 #define FPE_FLTRES 6 /* floating point inexact result */
393 #define FPE_FLTINV 7 /* floating point invalid operation */
394 #define FPE_FLTSUB 8 /* subscript out of range */
395 #define SEGV_MAPERR 1 /* address not mapped to object */
396 #define SEGV_ACCERR 2 /* invalid permissions for mapped object */
397 #define BUS_ADRALN 1 /* invalid address alignment */
398 #define BUS_ADRERR 2 /* non-existant physical address */
399 #define BUS_OBJERR 3 /* object specific hardware error */
400 #define TRAP_BRKPT 1 /* process breakpoint */
401 #define TRAP_TRACE 2 /* process trace trap */
402 #define CLD_EXITED 1 /* child has exited */
403 #define CLD_KILLED 2 /* child was killed */
404 #define CLD_DUMPED 3 /* child terminated abnormally */
405 #define CLD_TRAPPED 4 /* traced child has trapped */
406 #define CLD_STOPPED 5 /* child has stopped */
407 #define CLD_CONTINUED 6 /* stopped child has continued */
408 #define POLL_IN 1 /* data input available */
409 #define POLL_OUT 2 /* output buffers available */
410 #define POLL_MSG 3 /* input message available */
411 #define POLL_ERR 4 /* i/o error */
412 #define POLL_PRI 5 /* high priority input available */
413 #define POLL_HUP 6 /* device disconnected */
414 #define SI_USER 0 /* sent by kill, sigsend, raise */
415 #define SI_QUEUE -1 /* sent by sigqueue */
416 #define SI_TIMER -2 /* sent by timer expiration */
417 #define SI_MESGQ -3 /* sent by real time mesq state change */
418 #define SI_ASYNCIO -4 /* sent by AIO completion */
419 #define SI_SIGIO -5 /* Sent by SIGIO */
420 #define SI_TKILL -6 /* Sent by tkill */
423 #if __GLIBC_MINOR__ < 1
424 /* Type for data associated with a signal. */
431 # define __SI_MAX_SIZE 128
432 # define __SI_PAD_SIZE ((__SI_MAX_SIZE / sizeof (int)) - 3)
434 typedef struct siginfo
436 int si_signo; /* Signal number. */
437 int si_errno; /* If non-zero, an errno value associated with
438 this signal, as defined in <errno.h>. */
439 int si_code; /* Signal code. */
443 int _pad[__SI_PAD_SIZE];
448 __pid_t si_pid; /* Sending process ID. */
449 __uid_t si_uid; /* Real user ID of sending process. */
452 /* POSIX.1b timers. */
455 unsigned int _timer1;
456 unsigned int _timer2;
459 /* POSIX.1b signals. */
462 __pid_t si_pid; /* Sending process ID. */
463 __uid_t si_uid; /* Real user ID of sending process. */
464 sigval_t si_sigval; /* Signal value. */
470 __pid_t si_pid; /* Which child. */
471 int si_status; /* Exit value or signal. */
476 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS. */
479 void *si_addr; /* Faulting insn/memory ref. */
485 int si_band; /* Band event for SIGPOLL. */
491 #define si_pid _sifields._kill.si_pid
492 #define si_uid _sifields._kill.si_uid
493 #define si_status _sifields._sigchld.si_status
494 #define si_utime _sifields._sigchld.si_utime
495 #define si_stime _sifields._sigchld.si_stime
496 #define si_value _sifields._rt.si_sigval
497 #define si_int _sifields._rt.si_sigval.sival_int
498 #define si_ptr _sifields._rt.si_sigval.sival_ptr
499 #define si_addr _sifields._sigfault.si_addr
500 #define si_band _sifields._sigpoll.si_band
501 #define si_fd _sifields._sigpoll.si_fd
507 #if defined (SVR4) || defined (LINUX)
509 static struct xlat siginfo_codes[] = {
511 { SI_NOINFO, "SI_NOINFO" },
514 { SI_USER, "SI_USER" },
517 { SI_LWP, "SI_LWP" },
520 { SI_QUEUE, "SI_QUEUE" },
523 { SI_TIMER, "SI_TIMER" },
526 { SI_ASYNCIO, "SI_ASYNCIO" },
529 { SI_MESGQ, "SI_MESGQ" },
532 { SI_SIGIO, "SI_SIGIO" },
535 { SI_TKILL, "SI_TKILL" },
540 static struct xlat sigill_codes[] = {
541 { ILL_ILLOPC, "ILL_ILLOPC" },
542 { ILL_ILLOPN, "ILL_ILLOPN" },
543 { ILL_ILLADR, "ILL_ILLADR" },
544 { ILL_ILLTRP, "ILL_ILLTRP" },
545 { ILL_PRVOPC, "ILL_PRVOPC" },
546 { ILL_PRVREG, "ILL_PRVREG" },
547 { ILL_COPROC, "ILL_COPROC" },
548 { ILL_BADSTK, "ILL_BADSTK" },
552 static struct xlat sigfpe_codes[] = {
553 { FPE_INTDIV, "FPE_INTDIV" },
554 { FPE_INTOVF, "FPE_INTOVF" },
555 { FPE_FLTDIV, "FPE_FLTDIV" },
556 { FPE_FLTOVF, "FPE_FLTOVF" },
557 { FPE_FLTUND, "FPE_FLTUND" },
558 { FPE_FLTRES, "FPE_FLTRES" },
559 { FPE_FLTINV, "FPE_FLTINV" },
560 { FPE_FLTSUB, "FPE_FLTSUB" },
564 static struct xlat sigtrap_codes[] = {
565 { TRAP_BRKPT, "TRAP_BRKPT" },
566 { TRAP_TRACE, "TRAP_TRACE" },
570 static struct xlat sigchld_codes[] = {
571 { CLD_EXITED, "CLD_EXITED" },
572 { CLD_KILLED, "CLD_KILLED" },
573 { CLD_DUMPED, "CLD_DUMPED" },
574 { CLD_TRAPPED, "CLD_TRAPPED" },
575 { CLD_STOPPED, "CLD_STOPPED" },
576 { CLD_CONTINUED,"CLD_CONTINUED" },
580 static struct xlat sigpoll_codes[] = {
581 { POLL_IN, "POLL_IN" },
582 { POLL_OUT, "POLL_OUT" },
583 { POLL_MSG, "POLL_MSG" },
584 { POLL_ERR, "POLL_ERR" },
585 { POLL_PRI, "POLL_PRI" },
586 { POLL_HUP, "POLL_HUP" },
590 static struct xlat sigprof_codes[] = {
592 { PROF_SIG, "PROF_SIG" },
598 static struct xlat sigemt_codes[] = {
600 { EMT_TAGOVF, "EMT_TAGOVF" },
606 static struct xlat sigsegv_codes[] = {
607 { SEGV_MAPERR, "SEGV_MAPERR" },
608 { SEGV_ACCERR, "SEGV_ACCERR" },
612 static struct xlat sigbus_codes[] = {
613 { BUS_ADRALN, "BUS_ADRALN" },
614 { BUS_ADRERR, "BUS_ADRERR" },
615 { BUS_OBJERR, "BUS_OBJERR" },
620 printsiginfo(sip, verbose)
626 if (sip->si_signo == 0) {
630 tprintf("{si_signo=");
631 printsignal(sip->si_signo);
632 code = xlookup(siginfo_codes, sip->si_code);
634 switch (sip->si_signo) {
636 code = xlookup(sigtrap_codes, sip->si_code);
639 code = xlookup(sigchld_codes, sip->si_code);
642 code = xlookup(sigpoll_codes, sip->si_code);
645 code = xlookup(sigprof_codes, sip->si_code);
648 code = xlookup(sigill_codes, sip->si_code);
652 code = xlookup(sigemt_codes, sip->si_code);
656 code = xlookup(sigfpe_codes, sip->si_code);
659 code = xlookup(sigsegv_codes, sip->si_code);
662 code = xlookup(sigbus_codes, sip->si_code);
667 tprintf(", si_code=%s", code);
669 tprintf(", si_code=%#x", sip->si_code);
671 if (sip->si_code != SI_NOINFO)
675 if (sip->si_errno < 0 || sip->si_errno >= nerrnos)
676 tprintf(", si_errno=%d", sip->si_errno);
678 tprintf(", si_errno=%s",
679 errnoent[sip->si_errno]);
682 if (SI_FROMUSER(sip)) {
683 tprintf(", si_pid=%ld, si_uid=%ld",
684 sip->si_pid, sip->si_uid);
686 switch (sip->si_code) {
690 #endif /* SI_QUEUE */
694 #endif /* SI_MESGQ */
695 tprintf(", si_value=%d",
696 sip->si_value.sival_int);
699 #endif /* SI_QUEUE */
702 #endif /* SI_FROMUSER */
704 switch (sip->si_signo) {
706 tprintf(", si_pid=%ld, si_status=",
708 if (sip->si_code == CLD_EXITED)
709 tprintf("%d", sip->si_status);
711 printsignal(sip->si_status);
716 tprintf(", si_utime=%lu, si_stime=%lu",
721 case SIGILL: case SIGFPE:
722 case SIGSEGV: case SIGBUS:
723 tprintf(", si_addr=%#lx",
724 (unsigned long) sip->si_addr);
727 switch (sip->si_code) {
728 case POLL_IN: case POLL_OUT: case POLL_MSG:
729 tprintf(", si_band=%ld",
730 (long) sip->si_band);
736 tprintf(", si_pid=%lu, si_uid=%lu, ",
737 (unsigned long) sip->si_pid,
738 (unsigned long) sip->si_uid);
742 tprintf("si_value={int=%u, ptr=%#lx}",
744 (unsigned long) sip->si_ptr);
754 #endif /* SVR4 || LINUX */
759 parse_sigset_t (const char *str, sigset_t *set)
766 for (i = _NSIG - 4; i >= 0; i -= 4, ++str) {
768 digit = (*str - 'a') + 10;
772 sigaddset(set, i + 1);
774 sigaddset(set, i + 2);
776 sigaddset(set, i + 3);
778 sigaddset(set, i + 4);
785 * Check process TCP for the disposition of signal SIG.
786 * Return 1 if the process would somehow manage to survive signal SIG,
787 * else return 0. This routine will never be called with SIGKILL.
790 sigishandled(tcp, sig)
800 sigset_t ignored, caught;
804 * Since procfs doesn't interfere with wait I think it is safe
805 * to punt on this question. If not, the information is there.
817 #if defined(SIGURG) && SIGURG != SIGIO
821 /* Gloria Gaynor says ... */
829 /* This is incredibly costly but it's worth it. */
830 /* NOTE: LinuxThreads internally uses SIGRTMIN, SIGRTMIN + 1 and
831 SIGRTMIN + 2, so we can't use the obsolete /proc/%d/stat which
832 doesn't handle real-time signals). */
833 sprintf(sname, "/proc/%d/status", tcp->pid);
834 if ((sfd = open(sname, O_RDONLY)) == -1) {
838 i = read(sfd, buf, sizeof(buf));
842 * Skip the extraneous fields. We need to skip
843 * command name has any spaces in it. So be it.
845 s = strstr(buf, "SigIgn:\t");
848 fprintf(stderr, "/proc/pid/status format error\n");
851 parse_sigset_t(s + 8, &ignored);
853 s = strstr(buf, "SigCgt:\t");
856 fprintf(stderr, "/proc/pid/status format error\n");
859 parse_sigset_t(s + 8, &caught);
862 fprintf(stderr, "sigs: %016qx %016qx (sig=%d)\n",
863 *(long long *) &ignored, *(long long *) &caught, sig);
865 if (sigismember(&ignored, sig) || sigismember(&caught, sig))
872 if (upeek(tcp->pid, uoff(u_signal[0]) + sig*sizeof(u_signal),
873 (long *) &u_signal) < 0) {
876 if (u_signal != SIG_DFL)
883 #if defined(SUNOS4) || defined(FREEBSD)
893 printsignal(tcp->u_arg[0]);
895 addr = tcp->u_arg[1];
897 addr = tcp->u_arg[2];
901 else if (!verbose(tcp))
902 tprintf("%#lx", addr);
903 else if (umove(tcp, addr, &sv) < 0)
906 switch ((int) sv.sv_handler) {
908 tprintf("{SIG_ERR}");
911 tprintf("{SIG_DFL}");
914 if (tcp->u_arg[0] == SIGTRAP) {
915 tcp->flags |= TCB_SIGTRAPPED;
916 kill(tcp->pid, SIGSTOP);
918 tprintf("{SIG_IGN}");
921 if (tcp->u_arg[0] == SIGTRAP) {
922 tcp->flags |= TCB_SIGTRAPPED;
923 kill(tcp->pid, SIGSTOP);
928 if (tcp->u_arg[0] == SIGTRAP) {
929 tcp->flags |= TCB_SIGTRAPPED;
930 kill(tcp->pid, SIGSTOP);
932 tprintf("{%#lx, ", (unsigned long) sv.sv_handler);
933 printsigmask(&sv.sv_mask, 0);
935 if (!printflags(sigvec_flags, sv.sv_flags))
949 if (entering(tcp)) { /* WTA: UD had a bug here: he forgot the braces */
951 long_to_sigset(tcp->u_arg[0], &sigm);
952 printsigmask(&sigm, 0);
965 addr = tcp->u_arg[0];
967 addr = tcp->u_arg[1];
970 else if (umove(tcp, addr, &ss) < 0)
971 tprintf("%#lx", addr);
973 tprintf("{ss_sp %#lx ", (unsigned long) ss.ss_sp);
974 tprintf("ss_onstack %s}", ss.ss_onstack ? "YES" : "NO");
988 #endif /* SUNOS4 || FREEBSD */
998 long_to_sigset(tcp->u_arg[0], &sigm);
999 printsigmask(&sigm, 0);
1001 if ((tcp->u_arg[0] & sigmask(SIGTRAP))) {
1002 /* Mark attempt to block SIGTRAP */
1003 tcp->flags |= TCB_SIGTRAPPED;
1004 /* Send unblockable signal */
1005 kill(tcp->pid, SIGSTOP);
1007 #endif /* !USE_PROCFS */
1009 else if (!syserror(tcp)) {
1011 long_to_sigset(tcp->u_rval, &sigm);
1012 tcp->auxstr = sprintsigmask("old mask ", &sigm, 0);
1014 return RVAL_HEX | RVAL_STR;
1023 return sys_sigsetmask(tcp);
1028 #ifdef HAVE_SIGACTION
1031 struct old_sigaction {
1032 __sighandler_t __sa_handler;
1033 unsigned long sa_mask;
1034 unsigned long sa_flags;
1035 void (*sa_restorer)(void);
1037 #define SA_HANDLER __sa_handler
1041 #define SA_HANDLER sa_handler
1051 struct old_sigaction sa;
1053 struct sigaction sa;
1057 if (entering(tcp)) {
1058 printsignal(tcp->u_arg[0]);
1060 addr = tcp->u_arg[1];
1062 addr = tcp->u_arg[2];
1065 else if (!verbose(tcp))
1066 tprintf("%#lx", addr);
1067 else if (umove(tcp, addr, &sa) < 0)
1070 switch ((long) sa.SA_HANDLER) {
1071 case (long) SIG_ERR:
1072 tprintf("{SIG_ERR}");
1074 case (long) SIG_DFL:
1075 tprintf("{SIG_DFL}");
1077 case (long) SIG_IGN:
1079 if (tcp->u_arg[0] == SIGTRAP) {
1080 tcp->flags |= TCB_SIGTRAPPED;
1081 kill(tcp->pid, SIGSTOP);
1083 #endif /* !USE_PROCFS */
1084 tprintf("{SIG_IGN}");
1088 if (tcp->u_arg[0] == SIGTRAP) {
1089 tcp->flags |= TCB_SIGTRAPPED;
1090 kill(tcp->pid, SIGSTOP);
1092 #endif /* !USE_PROCFS */
1093 tprintf("{%#lx, ", (long) sa.SA_HANDLER);
1095 printsigmask (&sa.sa_mask, 0);
1097 long_to_sigset(sa.sa_mask, &sigset);
1098 printsigmask(&sigset, 0);
1101 if (!printflags(sigact_flags, sa.sa_flags))
1104 if (sa.sa_flags & SA_RESTORER)
1105 tprintf(", %p", sa.sa_restorer);
1114 tprintf(", %#lx", (unsigned long) sa.sa_restorer);
1123 if (entering(tcp)) {
1124 printsignal(tcp->u_arg[0]);
1126 switch (tcp->u_arg[1]) {
1135 if (tcp->u_arg[0] == SIGTRAP) {
1136 tcp->flags |= TCB_SIGTRAPPED;
1137 kill(tcp->pid, SIGSTOP);
1139 #endif /* !USE_PROCFS */
1144 if (tcp->u_arg[0] == SIGTRAP) {
1145 tcp->flags |= TCB_SIGTRAPPED;
1146 kill(tcp->pid, SIGSTOP);
1148 #endif /* !USE_PROCFS */
1149 tprintf("%#lx", tcp->u_arg[1]);
1154 switch (tcp->u_rval) {
1156 tcp->auxstr = "SIG_ERR"; break;
1158 tcp->auxstr = "SIG_DFL"; break;
1160 tcp->auxstr = "SIG_IGN"; break;
1164 return RVAL_HEX | RVAL_STR;
1172 if (entering(tcp)) {
1173 printsignal(tcp->u_arg[0]);
1178 #endif /* HAVE_SIGACTION */
1187 struct pt_regs regs;
1188 struct sigcontext_struct sc;
1190 if (entering(tcp)) {
1193 if (ptrace(PTRACE_GETREGS, tcp->pid, NULL, (void *)®s) == -1)
1196 if (umove(tcp, regs.ARM_sp, &sc) < 0)
1200 tcp->u_arg[1] = sc.oldmask;
1203 long_to_sigset(tcp->u_arg[1], &sigm);
1204 tcp->u_rval = tcp->u_error = 0;
1205 if (tcp->u_arg[0] == 0)
1207 tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
1208 return RVAL_NONE | RVAL_STR;
1211 #elif defined(S390) || defined(S390X)
1213 struct sigcontext_struct sc;
1215 if (entering(tcp)) {
1217 if (upeek(tcp->pid,PT_GPR15,&usp)<0)
1219 if (umove(tcp, usp+__SIGNAL_FRAMESIZE, &sc) < 0)
1222 memcpy(&tcp->u_arg[1],&sc.oldmask[0],sizeof(sigset_t));
1224 tcp->u_rval = tcp->u_error = 0;
1225 if (tcp->u_arg[0] == 0)
1227 tcp->auxstr = sprintsigmask("mask now ",(sigset_t *)&tcp->u_arg[1],0);
1228 return RVAL_NONE | RVAL_STR;
1234 struct sigcontext_struct sc;
1236 if (entering(tcp)) {
1238 if (upeek(tcp->pid, 4*UESP, &esp) < 0)
1240 if (umove(tcp, esp, &sc) < 0)
1243 tcp->u_arg[1] = sc.oldmask;
1247 long_to_sigset(tcp->u_arg[1], &sigm);
1248 tcp->u_rval = tcp->u_error = 0;
1249 if (tcp->u_arg[0] == 0)
1251 tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
1252 return RVAL_NONE | RVAL_STR;
1257 struct sigcontext sc;
1260 if (entering(tcp)) {
1261 /* offset of sigcontext in the kernel's sigframe structure: */
1262 # define SIGFRAME_SC_OFFSET 0x90
1264 if (upeek(tcp->pid, PT_R12, &sp) < 0)
1266 if (umove(tcp, sp + 16 + SIGFRAME_SC_OFFSET, &sc) < 0)
1269 memcpy(tcp->u_arg + 1, &sc.sc_mask, sizeof(sc.sc_mask));
1274 memcpy(&sigm, tcp->u_arg + 1, sizeof (sigm));
1275 tcp->u_rval = tcp->u_error = 0;
1276 if (tcp->u_arg[0] == 0)
1278 tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
1279 return RVAL_NONE | RVAL_STR;
1285 struct sigcontext_struct sc;
1287 if (entering(tcp)) {
1289 if (upeek(tcp->pid, sizeof(unsigned long)*PT_R1, &esp) < 0)
1291 if (umove(tcp, esp, &sc) < 0)
1294 tcp->u_arg[1] = sc.oldmask;
1298 long_to_sigset(tcp->u_arg[1], &sigm);
1299 tcp->u_rval = tcp->u_error = 0;
1300 if (tcp->u_arg[0] == 0)
1302 tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
1303 return RVAL_NONE | RVAL_STR;
1306 #else /* !POWERPC */
1309 struct sigcontext sc;
1311 if (entering(tcp)) {
1313 if (upeek(tcp->pid, 4*PT_USP, &usp) < 0)
1315 if (umove(tcp, usp, &sc) < 0)
1318 tcp->u_arg[1] = sc.sc_mask;
1322 long_to_sigset(tcp->u_arg[1], &sigm);
1323 tcp->u_rval = tcp->u_error = 0;
1324 if (tcp->u_arg[0] == 0)
1326 tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
1327 return RVAL_NONE | RVAL_STR;
1333 struct sigcontext_struct sc;
1335 if (entering(tcp)) {
1337 if (upeek(tcp->pid, REG_FP, &fp) < 0)
1339 if (umove(tcp, fp, &sc) < 0)
1342 tcp->u_arg[1] = sc.sc_mask;
1346 long_to_sigset(tcp->u_arg[1], &sigm);
1347 tcp->u_rval = tcp->u_error = 0;
1348 if (tcp->u_arg[0] == 0)
1350 tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
1351 return RVAL_NONE | RVAL_STR;
1360 if(ptrace(PTRACE_GETREGS, tcp->pid, (char *)®s, 0) < 0) {
1361 perror("sigreturn: PTRACE_GETREGS ");
1367 if(umove(tcp, i1, &si) < 0) {
1368 perror("sigreturn: umove ");
1372 tcp->u_arg[1] = si.si_mask;
1375 long_to_sigset(tcp->u_arg[1], &sigm);
1376 tcp->u_rval = tcp->u_error = 0;
1377 if(tcp->u_arg[0] == 0)
1379 tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
1380 return RVAL_NONE | RVAL_STR;
1386 struct sigcontext sc;
1390 if (upeek(tcp->pid, REG_SP, &sp) < 0)
1392 if (umove(tcp, sp, &sc) < 0)
1395 tcp->u_arg[1] = sc.sc_sigset;
1397 tcp->u_rval = tcp->u_error = 0;
1398 if(tcp->u_arg[0] == 0)
1400 tcp->auxstr = sprintsigmask("mask now ", tcp->u_arg[1]);
1401 return RVAL_NONE | RVAL_STR;
1405 #warning No sys_sigreturn() for this architecture
1406 #warning (no problem, just a reminder :-)
1412 #endif /* !POWERPC */
1424 long_to_sigset(tcp->u_rval, &sigm);
1425 tcp->auxstr = sprintsigmask("mask ", &sigm, 0);
1427 return RVAL_HEX | RVAL_STR;
1434 if (entering(tcp)) {
1436 long_to_sigset(tcp->u_arg[2], &sigm);
1438 /* first two are not really arguments, but print them anyway */
1439 /* nevermind, they are an anachronism now, too bad... */
1440 tprintf("%d, %#x, ", tcp->u_arg[0], tcp->u_arg[1]);
1442 printsigmask(&sigm, 0);
1449 #if defined(SVR4) || defined(FREEBSD)
1457 if (entering(tcp)) {
1458 if (umove(tcp, tcp->u_arg[0], &sigset) < 0)
1461 printsigmask(&sigset, 0);
1466 static struct xlat ucontext_flags[] = {
1467 { UC_SIGMASK, "UC_SIGMASK" },
1468 { UC_STACK, "UC_STACK" },
1469 { UC_CPU, "UC_CPU" },
1471 { UC_FPU, "UC_FPU" },
1474 { UC_INTR, "UC_INTR" },
1478 #endif /* !FREEBSD */
1479 #endif /* SVR4 || FREEBSD */
1481 #if defined SVR4 || defined LINUX || defined FREEBSD
1482 #if defined LINUX && !defined SS_ONSTACK
1483 #define SS_ONSTACK 1
1484 #define SS_DISABLE 2
1485 #if __GLIBC_MINOR__ == 0
1495 #define stack_t struct sigaltstack
1498 static struct xlat sigaltstack_flags[] = {
1499 { SS_ONSTACK, "SS_ONSTACK" },
1500 { SS_DISABLE, "SS_DISABLE" },
1507 printcontext(tcp, ucp)
1513 tprintf("uc_flags=");
1514 if (!printflags(ucontext_flags, ucp->uc_flags))
1516 tprintf(", uc_link=%#lx, ", (unsigned long) ucp->uc_link);
1518 tprintf("uc_sigmask=");
1519 printsigmask(&ucp->uc_sigmask, 0);
1521 tprintf(", uc_stack={ss_sp=%#lx, ss_size=%d, ss_flags=",
1522 (unsigned long) ucp->uc_stack.ss_sp,
1523 ucp->uc_stack.ss_size);
1524 if (!printflags(sigaltstack_flags, ucp->uc_stack.ss_flags))
1539 tprintf("%#lx", tcp->u_arg[0]);
1540 else if (!tcp->u_arg[0])
1542 else if (umove(tcp, tcp->u_arg[0], &uc) < 0)
1545 printcontext(tcp, &uc);
1556 if (entering(tcp)) {
1559 else if (umove(tcp, tcp->u_arg[0], &uc) < 0)
1562 printcontext(tcp, &uc);
1565 tcp->u_rval = tcp->u_error = 0;
1566 if (tcp->u_arg[0] == 0)
1575 #if defined(LINUX) || defined(FREEBSD)
1578 print_stack_t(tcp, addr)
1583 if (umove(tcp, addr, &ss) < 0)
1585 tprintf("{ss_sp=%#lx, ss_flags=", (unsigned long) ss.ss_sp);
1586 if (!printflags(sigaltstack_flags, ss.ss_flags))
1588 tprintf(", ss_size=%lu}", (unsigned long) ss.ss_size);
1593 sys_sigaltstack(tcp)
1596 if (entering(tcp)) {
1597 if (tcp->u_arg[0] == 0)
1599 else if (print_stack_t(tcp, tcp->u_arg[0]) < 0)
1604 if (tcp->u_arg[1] == 0)
1606 else if (print_stack_t(tcp, tcp->u_arg[1]) < 0)
1613 #ifdef HAVE_SIGACTION
1616 sys_sigprocmask(tcp)
1620 if (entering(tcp)) {
1621 printxval(sigprocmaskcmds, tcp->u_arg[0], "SIG_???");
1623 printsigmask(tcp->u_arg[1], 0);
1625 else if (!syserror(tcp)) {
1626 tcp->auxstr = sprintsigmask("old mask ", tcp->u_rval, 0);
1627 return RVAL_HEX | RVAL_STR;
1632 if (entering(tcp)) {
1634 if (tcp->u_arg[0] == 0)
1638 printxval(sigprocmaskcmds, tcp->u_arg[0], "SIG_???");
1642 else if (copy_sigset(tcp, tcp->u_arg[1], &sigset) < 0)
1643 tprintf("%#lx, ", tcp->u_arg[1]);
1645 printsigmask(&sigset, 0);
1652 else if (syserror(tcp))
1653 tprintf("%#lx", tcp->u_arg[2]);
1654 else if (copy_sigset(tcp, tcp->u_arg[2], &sigset) < 0)
1657 printsigmask(&sigset, 0);
1663 #endif /* HAVE_SIGACTION */
1669 if (entering(tcp)) {
1670 tprintf("%ld, %s", tcp->u_arg[0], signame(tcp->u_arg[1]));
1679 return sys_kill(tcp);
1690 tprintf("%#lx", tcp->u_arg[0]);
1691 else if (copy_sigset(tcp, tcp->u_arg[0], &sigset) < 0)
1694 printsigmask(&sigset, 0);
1699 int sys_sigwait(tcp)
1704 if (entering(tcp)) {
1705 if (copy_sigset(tcp, tcp->u_arg[0], &sigset) < 0)
1708 printsigmask(&sigset, 0);
1711 if (!syserror(tcp)) {
1712 tcp->auxstr = signalent[tcp->u_rval];
1713 return RVAL_DECIMAL | RVAL_STR;
1722 sys_rt_sigprocmask(tcp)
1727 /* Note: arg[3] is the length of the sigset. */
1728 if (entering(tcp)) {
1729 printxval(sigprocmaskcmds, tcp->u_arg[0], "SIG_???");
1733 else if (copy_sigset_len(tcp, tcp->u_arg[1], &sigset, tcp->u_arg[3]) < 0)
1734 tprintf("%#lx, ", tcp->u_arg[1]);
1736 printsigmask(&sigset, 1);
1744 else if (syserror(tcp))
1745 tprintf("%#lx", tcp->u_arg[2]);
1746 else if (copy_sigset_len(tcp, tcp->u_arg[2], &sigset, tcp->u_arg[3]) < 0)
1749 printsigmask(&sigset, 1);
1750 tprintf(", %lu", tcp->u_arg[3]);
1756 /* Structure describing the action to be taken when a signal arrives. */
1757 struct new_sigaction
1761 __sighandler_t __sa_handler;
1762 void (*__sa_sigaction) (int, siginfo_t *, void *);
1764 __sigaction_handler;
1765 unsigned long sa_flags;
1766 void (*sa_restorer) (void);
1767 unsigned long int sa_mask[2];
1772 sys_rt_sigaction(tcp)
1775 struct new_sigaction sa;
1779 if (entering(tcp)) {
1780 printsignal(tcp->u_arg[0]);
1782 addr = tcp->u_arg[1];
1784 addr = tcp->u_arg[2];
1787 else if (!verbose(tcp))
1788 tprintf("%#lx", addr);
1789 else if (umove(tcp, addr, &sa) < 0)
1792 switch ((long) sa.__sigaction_handler.__sa_handler) {
1793 case (long) SIG_ERR:
1794 tprintf("{SIG_ERR}");
1796 case (long) SIG_DFL:
1797 tprintf("{SIG_DFL}");
1799 case (long) SIG_IGN:
1800 tprintf("{SIG_IGN}");
1804 (long) sa.__sigaction_handler.__sa_handler);
1805 sigemptyset(&sigset);
1807 if (tcp->u_arg[4] <= sizeof(sigset))
1808 memcpy(&sigset, &sa.sa_mask, tcp->u_arg[4]);
1810 if (tcp->u_arg[3] <= sizeof(sigset))
1811 memcpy(&sigset, &sa.sa_mask, tcp->u_arg[3]);
1814 memcpy(&sigset, &sa.sa_mask, sizeof(sigset));
1815 printsigmask(&sigset, 1);
1817 if (!printflags(sigact_flags, sa.sa_flags))
1820 if (sa.sa_flags & SA_RESTORER)
1821 tprintf(", %p", sa.sa_restorer);
1830 tprintf(", %#lx, %lu", tcp->u_arg[3], tcp->u_arg[4]);
1831 #elif defined(ALPHA)
1832 tprintf(", %lu, %#lx", tcp->u_arg[3], tcp->u_arg[4]);
1834 tprintf(", %lu", addr = tcp->u_arg[3]);
1840 sys_rt_sigpending(tcp)
1847 tprintf("%#lx", tcp->u_arg[0]);
1848 else if (copy_sigset_len(tcp, tcp->u_arg[0],
1849 &sigset, tcp->u_arg[1]) < 0)
1852 printsigmask(&sigset, 1);
1857 sys_rt_sigsuspend(tcp)
1860 if (entering(tcp)) {
1862 if (copy_sigset_len(tcp, tcp->u_arg[0], &sigm, tcp->u_arg[1]) < 0)
1865 printsigmask(&sigm, 1);
1870 sys_rt_sigqueueinfo(tcp)
1873 if (entering(tcp)) {
1875 tprintf("%lu, ", tcp->u_arg[0]);
1876 printsignal(tcp->u_arg[1]);
1878 if (umove(tcp, tcp->u_arg[2], &si) < 0)
1879 tprintf("%#lx", tcp->u_arg[2]);
1881 printsiginfo(&si, verbose (tcp));
1886 int sys_rt_sigtimedwait(tcp)
1889 if (entering(tcp)) {
1892 if (copy_sigset_len(tcp, tcp->u_arg[0],
1893 &sigset, tcp->u_arg[3]) < 0)
1896 printsigmask(&sigset, 1);
1901 tprintf("%#lx", tcp->u_arg[0]);
1904 if (umove(tcp, tcp->u_arg[1], &si) < 0)
1905 tprintf("%#lx", tcp->u_arg[1]);
1907 printsiginfo(&si, verbose (tcp));
1909 tprintf(", %#lx", tcp->u_arg[2]);
1910 tprintf(", %d", (int) tcp->u_arg[3]);