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
79 #endif /* HAVE_ASM_REG_H */
80 #ifdef HAVE_ASM_SIGCONTEXT_H
87 #include <asm/sigcontext.h>
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 static struct xlat sigact_flags[] = {
179 { SA_RESTORER, "SA_RESTORER" },
182 { SA_STACK, "SA_STACK" },
185 { SA_RESTART, "SA_RESTART" },
188 { SA_INTERRUPT, "SA_INTERRUPT" },
191 { SA_NOMASK, "SA_NOMASK" },
194 { SA_ONESHOT, "SA_ONESHOT" },
197 { SA_SIGINFO, "SA_SIGINFO" },
200 { SA_RESETHAND, "SA_RESETHAND" },
203 { SA_ONSTACK, "SA_ONSTACK" },
206 { SA_NODEFER, "SA_NODEFER" },
209 { SA_NOCLDSTOP, "SA_NOCLDSTOP" },
212 { SA_NOCLDWAIT, "SA_NOCLDWAIT" },
215 { _SA_BSDCALL, "_SA_BSDCALL" },
220 static struct xlat sigprocmaskcmds[] = {
221 { SIG_BLOCK, "SIG_BLOCK" },
222 { SIG_UNBLOCK, "SIG_UNBLOCK" },
223 { SIG_SETMASK, "SIG_SETMASK" },
225 { SIG_SETMASK32,"SIG_SETMASK32" },
230 #endif /* HAVE_SIGACTION */
232 /* Anonymous realtime signals. */
233 /* Under glibc 2.1, SIGRTMIN et al are functions, but __SIGRTMIN is a
234 constant. This is what we want. Otherwise, just use SIGRTMIN. */
237 #define __SIGRTMIN SIGRTMIN
238 #define __SIGRTMAX SIGRTMAX /* likewise */
247 if (sig < nsignals) {
248 return signalent[sig];
250 } else if (sig >= __SIGRTMIN && sig <= __SIGRTMAX) {
251 sprintf(buf, "SIGRT_%ld", (long)(sig - __SIGRTMIN));
253 #endif /* SIGRTMIN */
255 sprintf(buf, "%d", sig);
272 copy_sigset_len(tcp, addr, s, len)
278 if (len > sizeof(*s))
281 if (umoven(tcp, addr, len, (char *)s) < 0)
287 /* Original sigset is unsigned long */
288 #define copy_sigset(tcp, addr, s) copy_sigset_len(tcp, addr, s, sizeof(long))
290 #define copy_sigset(tcp, addr, s) copy_sigset_len(tcp, addr, s, sizeof(sigset_t))
294 sprintsigmask(s, mask, rt)
297 int rt; /* set might include realtime sigs */
302 static char outstr[256];
305 s = outstr + strlen(outstr);
310 maxsigs = __SIGRTMAX; /* instead */
312 for (i = 1; i < maxsigs; i++) {
313 if (sigismember(mask, i) == 1)
316 if (nsigs >= nsignals * 2 / 3) {
318 for (i = 1; i < maxsigs; i++) {
319 switch (sigismember(mask, i)) {
331 for (i = 1; i < maxsigs; i++) {
332 if (sigismember(mask, i) == 1) {
333 /* real-time signals on solaris don't have
337 sprintf(s, format, signalent[i] + 3);
341 sprintf(tsig, "%u", i);
342 sprintf(s, format, tsig);
354 printsigmask(mask, rt)
358 tprintf("%s", sprintsigmask("", mask, rt));
365 tprintf(signame(nr));
371 #define ILL_ILLOPC 1 /* illegal opcode */
372 #define ILL_ILLOPN 2 /* illegal operand */
373 #define ILL_ILLADR 3 /* illegal addressing mode */
374 #define ILL_ILLTRP 4 /* illegal trap */
375 #define ILL_PRVOPC 5 /* privileged opcode */
376 #define ILL_PRVREG 6 /* privileged register */
377 #define ILL_COPROC 7 /* coprocessor error */
378 #define ILL_BADSTK 8 /* internal stack error */
379 #define FPE_INTDIV 1 /* integer divide by zero */
380 #define FPE_INTOVF 2 /* integer overflow */
381 #define FPE_FLTDIV 3 /* floating point divide by zero */
382 #define FPE_FLTOVF 4 /* floating point overflow */
383 #define FPE_FLTUND 5 /* floating point underflow */
384 #define FPE_FLTRES 6 /* floating point inexact result */
385 #define FPE_FLTINV 7 /* floating point invalid operation */
386 #define FPE_FLTSUB 8 /* subscript out of range */
387 #define SEGV_MAPERR 1 /* address not mapped to object */
388 #define SEGV_ACCERR 2 /* invalid permissions for mapped object */
389 #define BUS_ADRALN 1 /* invalid address alignment */
390 #define BUS_ADRERR 2 /* non-existant physical address */
391 #define BUS_OBJERR 3 /* object specific hardware error */
392 #define TRAP_BRKPT 1 /* process breakpoint */
393 #define TRAP_TRACE 2 /* process trace trap */
394 #define CLD_EXITED 1 /* child has exited */
395 #define CLD_KILLED 2 /* child was killed */
396 #define CLD_DUMPED 3 /* child terminated abnormally */
397 #define CLD_TRAPPED 4 /* traced child has trapped */
398 #define CLD_STOPPED 5 /* child has stopped */
399 #define CLD_CONTINUED 6 /* stopped child has continued */
400 #define POLL_IN 1 /* data input available */
401 #define POLL_OUT 2 /* output buffers available */
402 #define POLL_MSG 3 /* input message available */
403 #define POLL_ERR 4 /* i/o error */
404 #define POLL_PRI 5 /* high priority input available */
405 #define POLL_HUP 6 /* device disconnected */
406 #define SI_USER 0 /* sent by kill, sigsend, raise */
407 #define SI_QUEUE -1 /* sent by sigqueue */
408 #define SI_TIMER -2 /* sent by timer expiration */
409 #define SI_MESGQ -3 /* sent by real time mesq state change */
410 #define SI_ASYNCIO -4 /* sent by AIO completion */
413 #if __GLIBC_MINOR__ < 1
414 /* Type for data associated with a signal. */
421 # define __SI_MAX_SIZE 128
422 # define __SI_PAD_SIZE ((__SI_MAX_SIZE / sizeof (int)) - 3)
424 typedef struct siginfo
426 int si_signo; /* Signal number. */
427 int si_errno; /* If non-zero, an errno value associated with
428 this signal, as defined in <errno.h>. */
429 int si_code; /* Signal code. */
433 int _pad[__SI_PAD_SIZE];
438 __pid_t si_pid; /* Sending process ID. */
439 __uid_t si_uid; /* Real user ID of sending process. */
442 /* POSIX.1b timers. */
445 unsigned int _timer1;
446 unsigned int _timer2;
449 /* POSIX.1b signals. */
452 __pid_t si_pid; /* Sending process ID. */
453 __uid_t si_uid; /* Real user ID of sending process. */
454 sigval_t si_sigval; /* Signal value. */
460 __pid_t si_pid; /* Which child. */
461 int si_status; /* Exit value or signal. */
466 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS. */
469 void *si_addr; /* Faulting insn/memory ref. */
475 int si_band; /* Band event for SIGPOLL. */
481 #define si_pid _sifields._kill.si_pid
482 #define si_uid _sifields._kill.si_uid
483 #define si_status _sifields._sigchld.si_status
484 #define si_utime _sifields._sigchld.si_utime
485 #define si_stime _sifields._sigchld.si_stime
486 #define si_value _sifields._rt.si_sigval
487 #define si_int _sifields._rt.si_sigval.sival_int
488 #define si_ptr _sifields._rt.si_sigval.sival_ptr
489 #define si_addr _sifields._sigfault.si_addr
490 #define si_band _sifields._sigpoll.si_band
491 #define si_fd _sifields._sigpoll.si_fd
497 #if defined (SVR4) || defined (LINUX)
499 static struct xlat siginfo_codes[] = {
501 { SI_NOINFO, "SI_NOINFO" },
504 { SI_USER, "SI_USER" },
507 { SI_LWP, "SI_LWP" },
510 { SI_QUEUE, "SI_QUEUE" },
513 { SI_TIMER, "SI_TIMER" },
516 { SI_ASYNCIO, "SI_ASYNCIO" },
519 { SI_MESGQ, "SI_MESGQ" },
524 static struct xlat sigill_codes[] = {
525 { ILL_ILLOPC, "ILL_ILLOPC" },
526 { ILL_ILLOPN, "ILL_ILLOPN" },
527 { ILL_ILLADR, "ILL_ILLADR" },
528 { ILL_ILLTRP, "ILL_ILLTRP" },
529 { ILL_PRVOPC, "ILL_PRVOPC" },
530 { ILL_PRVREG, "ILL_PRVREG" },
531 { ILL_COPROC, "ILL_COPROC" },
532 { ILL_BADSTK, "ILL_BADSTK" },
536 static struct xlat sigfpe_codes[] = {
537 { FPE_INTDIV, "FPE_INTDIV" },
538 { FPE_INTOVF, "FPE_INTOVF" },
539 { FPE_FLTDIV, "FPE_FLTDIV" },
540 { FPE_FLTOVF, "FPE_FLTOVF" },
541 { FPE_FLTUND, "FPE_FLTUND" },
542 { FPE_FLTRES, "FPE_FLTRES" },
543 { FPE_FLTINV, "FPE_FLTINV" },
544 { FPE_FLTSUB, "FPE_FLTSUB" },
548 static struct xlat sigtrap_codes[] = {
549 { TRAP_BRKPT, "TRAP_BRKPT" },
550 { TRAP_TRACE, "TRAP_TRACE" },
554 static struct xlat sigchld_codes[] = {
555 { CLD_EXITED, "CLD_EXITED" },
556 { CLD_KILLED, "CLD_KILLED" },
557 { CLD_DUMPED, "CLD_DUMPED" },
558 { CLD_TRAPPED, "CLD_TRAPPED" },
559 { CLD_STOPPED, "CLD_STOPPED" },
560 { CLD_CONTINUED,"CLD_CONTINUED" },
564 static struct xlat sigpoll_codes[] = {
565 { POLL_IN, "POLL_IN" },
566 { POLL_OUT, "POLL_OUT" },
567 { POLL_MSG, "POLL_MSG" },
568 { POLL_ERR, "POLL_ERR" },
569 { POLL_PRI, "POLL_PRI" },
570 { POLL_HUP, "POLL_HUP" },
574 static struct xlat sigprof_codes[] = {
576 { PROF_SIG, "PROF_SIG" },
582 static struct xlat sigemt_codes[] = {
584 { EMT_TAGOVF, "EMT_TAGOVF" },
590 static struct xlat sigsegv_codes[] = {
591 { SEGV_MAPERR, "SEGV_MAPERR" },
592 { SEGV_ACCERR, "SEGV_ACCERR" },
596 static struct xlat sigbus_codes[] = {
597 { BUS_ADRALN, "BUS_ADRALN" },
598 { BUS_ADRERR, "BUS_ADRERR" },
599 { BUS_OBJERR, "BUS_OBJERR" },
604 printsiginfo(sip, verbose)
610 if (sip->si_signo == 0) {
614 tprintf("{si_signo=");
615 printsignal(sip->si_signo);
616 code = xlookup(siginfo_codes, sip->si_code);
618 switch (sip->si_signo) {
620 code = xlookup(sigtrap_codes, sip->si_code);
623 code = xlookup(sigchld_codes, sip->si_code);
626 code = xlookup(sigpoll_codes, sip->si_code);
629 code = xlookup(sigprof_codes, sip->si_code);
632 code = xlookup(sigill_codes, sip->si_code);
636 code = xlookup(sigemt_codes, sip->si_code);
640 code = xlookup(sigfpe_codes, sip->si_code);
643 code = xlookup(sigsegv_codes, sip->si_code);
646 code = xlookup(sigbus_codes, sip->si_code);
651 tprintf(", si_code=%s", code);
653 tprintf(", si_code=%#x", sip->si_code);
655 if (sip->si_code != SI_NOINFO)
659 if (sip->si_errno < 0 || sip->si_errno >= nerrnos)
660 tprintf(", si_errno=%d", sip->si_errno);
662 tprintf(", si_errno=%s",
663 errnoent[sip->si_errno]);
666 if (SI_FROMUSER(sip)) {
667 tprintf(", si_pid=%ld, si_uid=%ld",
668 sip->si_pid, sip->si_uid);
670 switch (sip->si_code) {
674 #endif /* SI_QUEUE */
678 #endif /* SI_MESGQ */
679 tprintf(", si_value=%d",
680 sip->si_value.sival_int);
683 #endif /* SI_QUEUE */
686 #endif /* SI_FROMUSER */
688 switch (sip->si_signo) {
690 tprintf(", si_pid=%ld, si_status=",
692 if (sip->si_code == CLD_EXITED)
693 tprintf("%d", sip->si_status);
695 printsignal(sip->si_status);
700 tprintf(", si_utime=%lu, si_stime=%lu",
705 case SIGILL: case SIGFPE:
706 case SIGSEGV: case SIGBUS:
707 tprintf(", si_addr=%#lx",
708 (unsigned long) sip->si_addr);
711 switch (sip->si_code) {
712 case POLL_IN: case POLL_OUT: case POLL_MSG:
713 tprintf(", si_band=%ld",
714 (long) sip->si_band);
720 tprintf(", si_pid=%lu, si_uid=%lu, ",
721 (unsigned long) sip->si_pid,
722 (unsigned long) sip->si_uid);
726 tprintf("si_value={int=%u, ptr=%#lx}",
728 (unsigned long) sip->si_ptr);
738 #endif /* SVR4 || LINUX */
743 parse_sigset_t (const char *str, sigset_t *set)
750 for (i = _NSIG - 4; i >= 0; i -= 4, ++str) {
752 digit = (*str - 'a') + 10;
756 sigaddset(set, i + 1);
758 sigaddset(set, i + 2);
760 sigaddset(set, i + 3);
762 sigaddset(set, i + 4);
769 * Check process TCP for the disposition of signal SIG.
770 * Return 1 if the process would somehow manage to survive signal SIG,
771 * else return 0. This routine will never be called with SIGKILL.
774 sigishandled(tcp, sig)
784 sigset_t ignored, caught;
788 * Since procfs doesn't interfere with wait I think it is safe
789 * to punt on this question. If not, the information is there.
801 #if defined(SIGURG) && SIGURG != SIGIO
805 /* Gloria Gaynor says ... */
813 /* This is incredibly costly but it's worth it. */
814 /* NOTE: LinuxThreads internally uses SIGRTMIN, SIGRTMIN + 1 and
815 SIGRTMIN + 2, so we can't use the obsolete /proc/%d/stat which
816 doesn't handle real-time signals). */
817 sprintf(sname, "/proc/%d/status", tcp->pid);
818 if ((sfd = open(sname, O_RDONLY)) == -1) {
822 i = read(sfd, buf, sizeof(buf));
826 * Skip the extraneous fields. We need to skip
827 * command name has any spaces in it. So be it.
829 s = strstr(buf, "SigIgn:\t");
832 fprintf(stderr, "/proc/pid/status format error\n");
835 parse_sigset_t(s + 8, &ignored);
837 s = strstr(buf, "SigCgt:\t");
840 fprintf(stderr, "/proc/pid/status format error\n");
843 parse_sigset_t(s + 8, &caught);
846 fprintf(stderr, "sigs: %016qx %016qx (sig=%d)\n",
847 *(long long *) &ignored, *(long long *) &caught, sig);
849 if (sigismember(&ignored, sig) || sigismember(&caught, sig))
856 if (upeek(tcp->pid, uoff(u_signal[0]) + sig*sizeof(u_signal),
857 (long *) &u_signal) < 0) {
860 if (u_signal != SIG_DFL)
867 #if defined(SUNOS4) || defined(FREEBSD)
877 printsignal(tcp->u_arg[0]);
879 addr = tcp->u_arg[1];
881 addr = tcp->u_arg[2];
885 else if (!verbose(tcp))
886 tprintf("%#lx", addr);
887 else if (umove(tcp, addr, &sv) < 0)
890 switch ((int) sv.sv_handler) {
892 tprintf("{SIG_ERR}");
895 tprintf("{SIG_DFL}");
898 if (tcp->u_arg[0] == SIGTRAP) {
899 tcp->flags |= TCB_SIGTRAPPED;
900 kill(tcp->pid, SIGSTOP);
902 tprintf("{SIG_IGN}");
905 if (tcp->u_arg[0] == SIGTRAP) {
906 tcp->flags |= TCB_SIGTRAPPED;
907 kill(tcp->pid, SIGSTOP);
912 if (tcp->u_arg[0] == SIGTRAP) {
913 tcp->flags |= TCB_SIGTRAPPED;
914 kill(tcp->pid, SIGSTOP);
916 tprintf("{%#lx, ", (unsigned long) sv.sv_handler);
917 printsigmask(&sv.sv_mask, 0);
919 if (!printflags(sigvec_flags, sv.sv_flags))
933 if (entering(tcp)) { /* WTA: UD had a bug here: he forgot the braces */
935 long_to_sigset(tcp->u_arg[0], &sigm);
936 printsigmask(&sigm, 0);
949 addr = tcp->u_arg[0];
951 addr = tcp->u_arg[1];
954 else if (umove(tcp, addr, &ss) < 0)
955 tprintf("%#lx", addr);
957 tprintf("{ss_sp %#lx ", (unsigned long) ss.ss_sp);
958 tprintf("ss_onstack %s}", ss.ss_onstack ? "YES" : "NO");
972 #endif /* SUNOS4 || FREEBSD */
982 long_to_sigset(tcp->u_arg[0], &sigm);
983 printsigmask(&sigm, 0);
985 if ((tcp->u_arg[0] & sigmask(SIGTRAP))) {
986 /* Mark attempt to block SIGTRAP */
987 tcp->flags |= TCB_SIGTRAPPED;
988 /* Send unblockable signal */
989 kill(tcp->pid, SIGSTOP);
991 #endif /* !USE_PROCFS */
993 else if (!syserror(tcp)) {
995 long_to_sigset(tcp->u_rval, &sigm);
996 tcp->auxstr = sprintsigmask("old mask ", &sigm, 0);
998 return RVAL_HEX | RVAL_STR;
1007 return sys_sigsetmask(tcp);
1012 #ifdef HAVE_SIGACTION
1015 struct old_sigaction {
1016 __sighandler_t __sa_handler;
1017 unsigned long sa_mask;
1018 unsigned long sa_flags;
1019 void (*sa_restorer)(void);
1021 #define SA_HANDLER __sa_handler
1025 #define SA_HANDLER sa_handler
1035 struct old_sigaction sa;
1037 struct sigaction sa;
1041 if (entering(tcp)) {
1042 printsignal(tcp->u_arg[0]);
1044 addr = tcp->u_arg[1];
1046 addr = tcp->u_arg[2];
1049 else if (!verbose(tcp))
1050 tprintf("%#lx", addr);
1051 else if (umove(tcp, addr, &sa) < 0)
1054 switch ((long) sa.SA_HANDLER) {
1055 case (long) SIG_ERR:
1056 tprintf("{SIG_ERR}");
1058 case (long) SIG_DFL:
1059 tprintf("{SIG_DFL}");
1061 case (long) SIG_IGN:
1063 if (tcp->u_arg[0] == SIGTRAP) {
1064 tcp->flags |= TCB_SIGTRAPPED;
1065 kill(tcp->pid, SIGSTOP);
1067 #endif /* !USE_PROCFS */
1068 tprintf("{SIG_IGN}");
1072 if (tcp->u_arg[0] == SIGTRAP) {
1073 tcp->flags |= TCB_SIGTRAPPED;
1074 kill(tcp->pid, SIGSTOP);
1076 #endif /* !USE_PROCFS */
1077 tprintf("{%#lx, ", (long) sa.SA_HANDLER);
1079 printsigmask (&sa.sa_mask, 0);
1081 long_to_sigset(sa.sa_mask, &sigset);
1082 printsigmask(&sigset, 0);
1085 if (!printflags(sigact_flags, sa.sa_flags))
1094 tprintf(", %#lx", (unsigned long) sa.sa_restorer);
1103 if (entering(tcp)) {
1104 printsignal(tcp->u_arg[0]);
1106 switch (tcp->u_arg[1]) {
1115 if (tcp->u_arg[0] == SIGTRAP) {
1116 tcp->flags |= TCB_SIGTRAPPED;
1117 kill(tcp->pid, SIGSTOP);
1119 #endif /* !USE_PROCFS */
1124 if (tcp->u_arg[0] == SIGTRAP) {
1125 tcp->flags |= TCB_SIGTRAPPED;
1126 kill(tcp->pid, SIGSTOP);
1128 #endif /* !USE_PROCFS */
1129 tprintf("%#lx", tcp->u_arg[1]);
1134 switch (tcp->u_rval) {
1136 tcp->auxstr = "SIG_ERR"; break;
1138 tcp->auxstr = "SIG_DFL"; break;
1140 tcp->auxstr = "SIG_IGN"; break;
1144 return RVAL_HEX | RVAL_STR;
1152 if (entering(tcp)) {
1153 printsignal(tcp->u_arg[0]);
1158 #endif /* HAVE_SIGACTION */
1168 struct sigcontext_struct sc;
1170 if (entering(tcp)) {
1172 if (upeek(tcp->pid,PT_GPR15,&usp)<0)
1174 if (umove(tcp, usp+__SIGNAL_FRAMESIZE, &sc) < 0)
1177 memcpy(&tcp->u_arg[1],&sc.oldmask[0],sizeof(sigset_t));
1179 tcp->u_rval = tcp->u_error = 0;
1180 if (tcp->u_arg[0] == 0)
1182 tcp->auxstr = sprintsigmask("mask now ",(sigset_t *)&tcp->u_arg[1]);
1183 return RVAL_NONE | RVAL_STR;
1189 struct sigcontext_struct sc;
1191 if (entering(tcp)) {
1193 if (upeek(tcp->pid, 4*UESP, &esp) < 0)
1195 if (umove(tcp, esp, &sc) < 0)
1198 tcp->u_arg[1] = sc.oldmask;
1202 long_to_sigset(tcp->u_arg[1], &sigm);
1203 tcp->u_rval = tcp->u_error = 0;
1204 if (tcp->u_arg[0] == 0)
1206 tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
1207 return RVAL_NONE | RVAL_STR;
1212 struct sigcontext sc;
1215 if (entering(tcp)) {
1216 /* offset of sigcontext in the kernel's sigframe structure: */
1217 # define SIGFRAME_SC_OFFSET 0x90
1219 if (upeek(tcp->pid, PT_R12, &sp) < 0)
1221 if (umove(tcp, sp + 16 + SIGFRAME_SC_OFFSET, &sc) < 0)
1224 memcpy(tcp->u_arg + 1, &sc.sc_mask, sizeof(sc.sc_mask));
1229 memcpy(&sigm, tcp->u_arg + 1, sizeof (sigm));
1230 tcp->u_rval = tcp->u_error = 0;
1231 if (tcp->u_arg[0] == 0)
1233 tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
1234 return RVAL_NONE | RVAL_STR;
1240 struct sigcontext_struct sc;
1242 if (entering(tcp)) {
1244 if (upeek(tcp->pid, 4*PT_R1, &esp) < 0)
1246 if (umove(tcp, esp, &sc) < 0)
1249 tcp->u_arg[1] = sc.oldmask;
1253 long_to_sigset(tcp->u_arg[1], &sigm);
1254 tcp->u_rval = tcp->u_error = 0;
1255 if (tcp->u_arg[0] == 0)
1257 tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
1258 return RVAL_NONE | RVAL_STR;
1261 #else /* !POWERPC */
1264 struct sigcontext sc;
1266 if (entering(tcp)) {
1268 if (upeek(tcp->pid, 4*PT_USP, &usp) < 0)
1270 if (umove(tcp, usp, &sc) < 0)
1273 tcp->u_arg[1] = sc.sc_mask;
1277 long_to_sigset(tcp->u_arg[1], &sigm);
1278 tcp->u_rval = tcp->u_error = 0;
1279 if (tcp->u_arg[0] == 0)
1281 tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
1282 return RVAL_NONE | RVAL_STR;
1288 struct sigcontext_struct sc;
1290 if (entering(tcp)) {
1292 if (upeek(tcp->pid, REG_FP, &fp) < 0)
1294 if (umove(tcp, fp, &sc) < 0)
1297 tcp->u_arg[1] = sc.sc_mask;
1301 long_to_sigset(tcp->u_arg[1], &sigm);
1302 tcp->u_rval = tcp->u_error = 0;
1303 if (tcp->u_arg[0] == 0)
1305 tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
1306 return RVAL_NONE | RVAL_STR;
1315 if(ptrace(PTRACE_GETREGS, tcp->pid, (char *)®s, 0) < 0) {
1316 perror("sigreturn: PTRACE_GETREGS ");
1322 if(umove(tcp, i1, &si) < 0) {
1323 perror("sigreturn: umove ");
1327 tcp->u_arg[1] = si.si_mask;
1330 long_to_sigset(tcp->u_arg[1], &sigm);
1331 tcp->u_rval = tcp->u_error = 0;
1332 if(tcp->u_arg[0] == 0)
1334 tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
1335 return RVAL_NONE | RVAL_STR;
1341 struct sigcontext sc;
1345 if (upeek(tcp->pid, REG_SP, &sp) < 0)
1347 if (umove(tcp, sp, &sc) < 0)
1350 tcp->u_arg[1] = sc.sc_sigset;
1352 tcp->u_rval = tcp->u_error = 0;
1353 if(tcp->u_arg[0] == 0)
1355 tcp->auxstr = sprintsigmask("mask now ", tcp->u_arg[1]);
1356 return RVAL_NONE | RVAL_STR;
1361 #warning NO sys_sigreturn DECODE FOR HPPA
1368 #endif /* !POWERPC */
1380 long_to_sigset(tcp->u_rval, &sigm);
1381 tcp->auxstr = sprintsigmask("mask ", &sigm, 0);
1383 return RVAL_HEX | RVAL_STR;
1390 if (entering(tcp)) {
1392 long_to_sigset(tcp->u_arg[2], &sigm);
1394 /* first two are not really arguments, but print them anyway */
1395 /* nevermind, they are an anachronism now, too bad... */
1396 tprintf("%d, %#x, ", tcp->u_arg[0], tcp->u_arg[1]);
1398 printsigmask(&sigm, 0);
1405 #if defined(SVR4) || defined(FREEBSD)
1413 if (entering(tcp)) {
1414 if (umove(tcp, tcp->u_arg[0], &sigset) < 0)
1417 printsigmask(&sigset, 0);
1422 static struct xlat ucontext_flags[] = {
1423 { UC_SIGMASK, "UC_SIGMASK" },
1424 { UC_STACK, "UC_STACK" },
1425 { UC_CPU, "UC_CPU" },
1427 { UC_FPU, "UC_FPU" },
1430 { UC_INTR, "UC_INTR" },
1434 #endif /* !FREEBSD */
1435 #endif /* SVR4 || FREEBSD */
1437 #if defined SVR4 || defined LINUX || defined FREEBSD
1438 #if defined LINUX && !defined SS_ONSTACK
1439 #define SS_ONSTACK 1
1440 #define SS_DISABLE 2
1441 #if __GLIBC_MINOR__ == 0
1451 #define stack_t struct sigaltstack
1454 static struct xlat sigaltstack_flags[] = {
1455 { SS_ONSTACK, "SS_ONSTACK" },
1456 { SS_DISABLE, "SS_DISABLE" },
1463 printcontext(tcp, ucp)
1469 tprintf("uc_flags=");
1470 if (!printflags(ucontext_flags, ucp->uc_flags))
1472 tprintf(", uc_link=%#lx, ", (unsigned long) ucp->uc_link);
1474 tprintf("uc_sigmask=");
1475 printsigmask(&ucp->uc_sigmask, 0);
1477 tprintf(", uc_stack={ss_sp=%#lx, ss_size=%d, ss_flags=",
1478 (unsigned long) ucp->uc_stack.ss_sp,
1479 ucp->uc_stack.ss_size);
1480 if (!printflags(sigaltstack_flags, ucp->uc_stack.ss_flags))
1495 tprintf("%#lx", tcp->u_arg[0]);
1496 else if (!tcp->u_arg[0])
1498 else if (umove(tcp, tcp->u_arg[0], &uc) < 0)
1501 printcontext(tcp, &uc);
1512 if (entering(tcp)) {
1515 else if (umove(tcp, tcp->u_arg[0], &uc) < 0)
1518 printcontext(tcp, &uc);
1521 tcp->u_rval = tcp->u_error = 0;
1522 if (tcp->u_arg[0] == 0)
1531 #if defined(LINUX) || defined(FREEBSD)
1534 print_stack_t(tcp, addr)
1539 if (umove(tcp, addr, &ss) < 0)
1541 tprintf("{ss_sp=%#lx, ss_flags=", (unsigned long) ss.ss_sp);
1542 if (!printflags(sigaltstack_flags, ss.ss_flags))
1544 tprintf(", ss_size=%lu}", (unsigned long) ss.ss_size);
1549 sys_sigaltstack(tcp)
1552 if (entering(tcp)) {
1553 if (tcp->u_arg[0] == 0)
1555 else if (print_stack_t(tcp, tcp->u_arg[0]) < 0)
1560 if (tcp->u_arg[1] == 0)
1562 else if (print_stack_t(tcp, tcp->u_arg[1]) < 0)
1569 #ifdef HAVE_SIGACTION
1572 sys_sigprocmask(tcp)
1576 if (entering(tcp)) {
1577 printxval(sigprocmaskcmds, tcp->u_arg[0], "SIG_???");
1579 printsigmask(tcp->u_arg[1], 0);
1581 else if (!syserror(tcp)) {
1582 tcp->auxstr = sprintsigmask("old mask ", tcp->u_rval, 0);
1583 return RVAL_HEX | RVAL_STR;
1588 if (entering(tcp)) {
1590 if (tcp->u_arg[0] == 0)
1594 printxval(sigprocmaskcmds, tcp->u_arg[0], "SIG_???");
1598 else if (copy_sigset(tcp, tcp->u_arg[1], &sigset) < 0)
1599 tprintf("%#lx, ", tcp->u_arg[1]);
1601 printsigmask(&sigset, 0);
1608 else if (syserror(tcp))
1609 tprintf("%#lx", tcp->u_arg[2]);
1610 else if (copy_sigset(tcp, tcp->u_arg[2], &sigset) < 0)
1613 printsigmask(&sigset, 0);
1619 #endif /* HAVE_SIGACTION */
1625 if (entering(tcp)) {
1626 tprintf("%ld, %s", tcp->u_arg[0], signame(tcp->u_arg[1]));
1635 return sys_kill(tcp);
1646 tprintf("%#lx", tcp->u_arg[0]);
1647 else if (copy_sigset(tcp, tcp->u_arg[0], &sigset) < 0)
1650 printsigmask(&sigset, 0);
1655 int sys_sigwait(tcp)
1660 if (entering(tcp)) {
1661 if (copy_sigset(tcp, tcp->u_arg[0], &sigset) < 0)
1664 printsigmask(&sigset, 0);
1667 if (!syserror(tcp)) {
1668 tcp->auxstr = signalent[tcp->u_rval];
1669 return RVAL_DECIMAL | RVAL_STR;
1678 sys_rt_sigprocmask(tcp)
1683 /* Note: arg[3] is the length of the sigset. */
1684 if (entering(tcp)) {
1685 printxval(sigprocmaskcmds, tcp->u_arg[0], "SIG_???");
1689 else if (copy_sigset_len(tcp, tcp->u_arg[1], &sigset, tcp->u_arg[3]) < 0)
1690 tprintf("%#lx, ", tcp->u_arg[1]);
1692 printsigmask(&sigset, 1);
1700 else if (syserror(tcp))
1701 tprintf("%#lx", tcp->u_arg[2]);
1702 else if (copy_sigset_len(tcp, tcp->u_arg[2], &sigset, tcp->u_arg[3]) < 0)
1705 printsigmask(&sigset, 1);
1706 tprintf(", %lu", tcp->u_arg[3]);
1712 /* Structure describing the action to be taken when a signal arrives. */
1713 struct new_sigaction
1717 __sighandler_t __sa_handler;
1718 void (*__sa_sigaction) (int, siginfo_t *, void *);
1720 __sigaction_handler;
1721 unsigned long sa_flags;
1722 void (*sa_restorer) (void);
1723 unsigned long int sa_mask[2];
1728 sys_rt_sigaction(tcp)
1731 struct new_sigaction sa;
1735 if (entering(tcp)) {
1736 printsignal(tcp->u_arg[0]);
1738 addr = tcp->u_arg[1];
1740 addr = tcp->u_arg[2];
1743 else if (!verbose(tcp))
1744 tprintf("%#lx", addr);
1745 else if (umove(tcp, addr, &sa) < 0)
1748 switch ((long) sa.__sigaction_handler.__sa_handler) {
1749 case (long) SIG_ERR:
1750 tprintf("{SIG_ERR}");
1752 case (long) SIG_DFL:
1753 tprintf("{SIG_DFL}");
1755 case (long) SIG_IGN:
1756 tprintf("{SIG_IGN}");
1760 (long) sa.__sigaction_handler.__sa_handler);
1761 sigemptyset(&sigset);
1763 if (tcp->u_arg[4] <= sizeof(sigset))
1764 memcpy(&sigset, &sa.sa_mask, tcp->u_arg[4]);
1766 if (tcp->u_arg[3] <= sizeof(sigset))
1767 memcpy(&sigset, &sa.sa_mask, tcp->u_arg[3]);
1770 memcpy(&sigset, &sa.sa_mask, sizeof(sigset));
1771 printsigmask(&sigset, 1);
1773 if (!printflags(sigact_flags, sa.sa_flags))
1782 tprintf(", %#lx, %lu", tcp->u_arg[3], tcp->u_arg[4]);
1783 #elif defined(ALPHA)
1784 tprintf(", %lu, %#lx", tcp->u_arg[3], tcp->u_arg[4]);
1786 tprintf(", %lu", addr = tcp->u_arg[3]);
1792 sys_rt_sigpending(tcp)
1799 tprintf("%#lx", tcp->u_arg[0]);
1800 else if (copy_sigset_len(tcp, tcp->u_arg[0],
1801 &sigset, tcp->u_arg[1]) < 0)
1804 printsigmask(&sigset, 1);
1809 sys_rt_sigsuspend(tcp)
1812 if (entering(tcp)) {
1814 if (copy_sigset_len(tcp, tcp->u_arg[0], &sigm, tcp->u_arg[1]) < 0)
1817 printsigmask(&sigm, 1);
1822 sys_rt_sigqueueinfo(tcp)
1825 if (entering(tcp)) {
1827 tprintf("%lu, ", tcp->u_arg[0]);
1828 printsignal(tcp->u_arg[1]);
1830 if (umove(tcp, tcp->u_arg[2], &si) < 0)
1831 tprintf("%#lx", tcp->u_arg[2]);
1833 printsiginfo(&si, verbose (tcp));
1838 int sys_rt_sigtimedwait(tcp)
1841 if (entering(tcp)) {
1844 if (copy_sigset_len(tcp, tcp->u_arg[0],
1845 &sigset, tcp->u_arg[3]) < 0)
1848 printsigmask(&sigset, 1);
1853 tprintf("%#lx", tcp->u_arg[0]);
1856 if (umove(tcp, tcp->u_arg[1], &si) < 0)
1857 tprintf("%#lx", tcp->u_arg[1]);
1859 printsiginfo(&si, verbose (tcp));
1861 tprintf(", %#lx", tcp->u_arg[2]);
1862 tprintf(", %d", (int) tcp->u_arg[3]);