granicus.if.org Git - strace/blob - signal.c

   1 /*
   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>
   9  * All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  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.
  21  *
  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.
  32  *
  33  *      $Id$
  34  */
  35
  36 #include "defs.h"
  37
  38 #include <signal.h>
  39 #include <sys/user.h>
  40 #include <fcntl.h>
  41
  42 #ifdef SVR4
  43 #include <sys/ucontext.h>
  44 #endif /* SVR4 */
  45
  46 #if HAVE_LINUX_PTRACE_H
  47 #undef PTRACE_SYSCALL
  48 #include <linux/ptrace.h>
  49 #endif
  50
  51 #ifdef HAVE_SYS_REG_H
  52 # include <sys/reg.h>
  53 #ifndef PTRACE_PEEKUSR
  54 # define PTRACE_PEEKUSR PTRACE_PEEKUSER
  55 #endif
  56 #ifndef PTRACE_POKEUSR
  57 # define PTRACE_POKEUSR PTRACE_POKEUSER
  58 #endif
  59 #endif
  60
  61 #ifdef LINUX
  62
  63 #ifdef HAVE_ASM_SIGCONTEXT_H
  64 #include <asm/sigcontext.h>
  65 #ifdef SPARC
  66 #include <asm/reg.h>
  67 typedef struct {
  68         struct regs             si_regs;
  69         int                     si_mask;
  70 } m_siginfo_t;
  71 #endif
  72 #else /* !HAVE_ASM_SIGCONTEXT_H */
  73 #ifdef I386
  74 struct sigcontext_struct {
  75         unsigned short gs, __gsh;
  76         unsigned short fs, __fsh;
  77         unsigned short es, __esh;
  78         unsigned short ds, __dsh;
  79         unsigned long edi;
  80         unsigned long esi;
  81         unsigned long ebp;
  82         unsigned long esp;
  83         unsigned long ebx;
  84         unsigned long edx;
  85         unsigned long ecx;
  86         unsigned long eax;
  87         unsigned long trapno;
  88         unsigned long err;
  89         unsigned long eip;
  90         unsigned short cs, __csh;
  91         unsigned long eflags;
  92         unsigned long esp_at_signal;
  93         unsigned short ss, __ssh;
  94         unsigned long i387;
  95         unsigned long oldmask;
  96         unsigned long cr2;
  97 };
  98 #else /* !I386 */
  99 #ifdef M68K
 100 struct sigcontext
 101 {
 102         unsigned long sc_mask;
 103         unsigned long sc_usp;
 104         unsigned long sc_d0;
 105         unsigned long sc_d1;
 106         unsigned long sc_a0;
 107         unsigned long sc_a1;
 108         unsigned short sc_sr;
 109         unsigned long sc_pc;
 110         unsigned short sc_formatvec;
 111 };
 112 #endif /* M68K */
 113 #endif /* !I386 */
 114 #endif /* !HAVE_ASM_SIGCONTEXT_H */
 115 #ifndef NSIG
 116 #define NSIG 32
 117 #endif
 118 #ifdef ARM
 119 #undef NSIG
 120 #define NSIG 32
 121 #endif
 122 #endif /* LINUX */
 123
 124 char *signalent0[] = {
 125 #include "signalent.h"
 126 };
 127 int nsignals0 = sizeof signalent0 / sizeof signalent0[0];
 128
 129 #if SUPPORTED_PERSONALITIES >= 2
 130 char *signalent1[] = {
 131 #include "signalent1.h"
 132 };
 133 int nsignals1 = sizeof signalent1 / sizeof signalent1[0];
 134 #endif /* SUPPORTED_PERSONALITIES >= 2 */
 135
 136 #if SUPPORTED_PERSONALITIES >= 3
 137 char *signalent2[] = {
 138 #include "signalent2.h"
 139 };
 140 int nsignals2 = sizeof signalent2 / sizeof signalent2[0];
 141 #endif /* SUPPORTED_PERSONALITIES >= 3 */
 142
 143 char **signalent;
 144 int nsignals;
 145
 146 #ifdef SUNOS4
 147
 148 static struct xlat sigvec_flags[] = {
 149         { SV_ONSTACK,   "SV_ONSTACK"    },
 150         { SV_INTERRUPT, "SV_INTERRUPT"  },
 151         { SV_RESETHAND, "SV_RESETHAND"  },
 152         { SA_NOCLDSTOP, "SA_NOCLDSTOP"  },
 153         { 0,            NULL            },
 154 };
 155
 156 #endif /* SUNOS4 */
 157
 158 #ifdef HAVE_SIGACTION
 159
 160 static struct xlat sigact_flags[] = {
 161 #ifdef SA_STACK
 162         { SA_STACK,     "SA_STACK"      },
 163 #endif
 164 #ifdef SA_RESTART
 165         { SA_RESTART,   "SA_RESTART"    },
 166 #endif
 167 #ifdef SA_INTERRUPT
 168         { SA_INTERRUPT, "SA_INTERRUPT"  },
 169 #endif
 170 #ifdef SA_NOMASK
 171         { SA_NOMASK,    "SA_NOMASK"     },
 172 #endif
 173 #ifdef SA_ONESHOT
 174         { SA_ONESHOT,   "SA_ONESHOT"    },
 175 #endif
 176 #ifdef SA_SIGINFO
 177         { SA_SIGINFO,   "SA_SIGINFO"    },
 178 #endif
 179 #ifdef SA_RESETHAND
 180         { SA_RESETHAND, "SA_RESETHAND"  },
 181 #endif
 182 #ifdef SA_ONSTACK
 183         { SA_ONSTACK,   "SA_ONSTACK"    },
 184 #endif
 185 #ifdef SA_NODEFER
 186         { SA_NODEFER,   "SA_NODEFER"    },
 187 #endif
 188 #ifdef SA_NOCLDSTOP
 189         { SA_NOCLDSTOP, "SA_NOCLDSTOP"  },
 190 #endif
 191 #ifdef SA_NOCLDWAIT
 192         { SA_NOCLDWAIT, "SA_NOCLDWAIT"  },
 193 #endif
 194 #ifdef _SA_BSDCALL
 195         { _SA_BSDCALL,  "_SA_BSDCALL"   },
 196 #endif
 197         { 0,            NULL            },
 198 };
 199
 200 static struct xlat sigprocmaskcmds[] = {
 201         { SIG_BLOCK,    "SIG_BLOCK"     },
 202         { SIG_UNBLOCK,  "SIG_UNBLOCK"   },
 203         { SIG_SETMASK,  "SIG_SETMASK"   },
 204 #ifdef SIG_SETMASK32
 205         { SIG_SETMASK32,"SIG_SETMASK32" },
 206 #endif
 207         { 0,            NULL            },
 208 };
 209
 210 #endif /* HAVE_SIGACTION */
 211
 212 /* Anonymous realtime signals. */
 213 /* Under glibc 2.1, SIGRTMIN et al are functions, but __SIGRTMIN is a
 214    constant.  This is what we want.  Otherwise, just use SIGRTMIN. */
 215 #ifdef SIGRTMIN
 216 #ifndef __SIGRTMIN
 217 #define __SIGRTMIN SIGRTMIN
 218 #define __SIGRTMAX SIGRTMAX /* likewise */
 219 #endif
 220 #endif
 221
 222 char *
 223 signame(sig)
 224 int sig;
 225 {
 226         static char buf[30];
 227         if (sig < nsignals) {
 228                 return signalent[sig];
 229 #ifdef SIGRTMIN
 230         } else if (sig >= __SIGRTMIN && sig <= __SIGRTMAX) {
 231                 sprintf(buf, "SIGRT_%ld", (long)(sig - __SIGRTMIN));
 232                 return buf;
 233 #endif /* SIGRTMIN */
 234         } else {
 235                 sprintf(buf, "%d", sig);
 236                 return buf;
 237         }
 238 }
 239
 240 #ifndef UNIXWARE
 241 static void
 242 long_to_sigset(l, s)
 243 long l;
 244 sigset_t *s;
 245 {
 246         sigemptyset(s);
 247         *(long *)s = l;
 248 }
 249 #endif
 250
 251 static int
 252 copy_sigset_len(tcp, addr, s, len)
 253 struct tcb *tcp;
 254 int addr;
 255 sigset_t *s;
 256 int len;
 257 {
 258         if (len > sizeof(*s))
 259                 len = sizeof(*s);
 260         sigemptyset(s);
 261         if (umoven(tcp, addr, len, (char *)s) < 0)
 262                 return -1;
 263         return 0;
 264 }
 265
 266 #ifdef LINUX
 267 /* Original sigset is unsigned long */
 268 #define copy_sigset(tcp, addr, s) copy_sigset_len(tcp, addr, s, sizeof(long))
 269 #else
 270 #define copy_sigset(tcp, addr, s) copy_sigset_len(tcp, addr, s, sizeof(sigset_t))
 271 #endif
 272
 273 static char *
 274 sprintsigmask(s, mask, rt)
 275 char *s;
 276 sigset_t *mask;
 277 int rt; /* set might include realtime sigs */
 278 {
 279         int i, nsigs;
 280         int maxsigs;
 281         char *format;
 282         static char outstr[256];
 283
 284         strcpy(outstr, s);
 285         s = outstr + strlen(outstr);
 286         nsigs = 0;
 287         maxsigs = nsignals;
 288 #ifdef __SIGRTMAX
 289         if (rt)
 290                 maxsigs = __SIGRTMAX; /* instead */
 291 #endif
 292         for (i = 1; i < maxsigs; i++) {
 293                 if (sigismember(mask, i) == 1)
 294                         nsigs++;
 295         }
 296         if (nsigs >= nsignals * 2 / 3) {
 297                 *s++ = '~';
 298                 for (i = 1; i < maxsigs; i++) {
 299                         switch (sigismember(mask, i)) {
 300                         case 1:
 301                                 sigdelset(mask, i);
 302                                 break;
 303                         case 0:
 304                                 sigaddset(mask, i);
 305                                 break;
 306                         }
 307                 }
 308         }
 309         format = "%s";
 310         *s++ = '[';
 311         for (i = 1; i < maxsigs; i++) {
 312                 if (sigismember(mask, i) == 1) {
 313                         sprintf(s, format, signame(i) + 3); s += strlen(s);
 314                         format = " %s";
 315                 }
 316         }
 317         *s++ = ']';
 318         *s = '\0';
 319         return outstr;
 320 }
 321
 322 static void
 323 printsigmask(mask, rt)
 324 sigset_t *mask;
 325 int rt;
 326 {
 327         tprintf("%s", sprintsigmask("", mask, rt));
 328 }
 329
 330 void
 331 printsignal(nr)
 332 int nr;
 333 {
 334         tprintf(signame(nr));
 335 }
 336
 337 /*
 338  * Check process TCP for the disposition of signal SIG.
 339  * Return 1 if the process would somehow manage to  survive signal SIG,
 340  * else return 0.  This routine will never be called with SIGKILL.
 341  */
 342 int
 343 sigishandled(tcp, sig)
 344 struct tcb *tcp;
 345 int sig;
 346 {
 347 #ifdef LINUX
 348         int sfd;
 349         char sname[32];
 350         char buf[1024];
 351         char *s;
 352         int i;
 353         unsigned int signalled, blocked, ignored, caught;
 354
 355         /* This is incredibly costly but it's worth it. */
 356         sprintf(sname, "/proc/%d/stat", tcp->pid);
 357         if ((sfd = open(sname, O_RDONLY)) == -1) {
 358                 perror(sname);
 359                 return 1;
 360         }
 361         i = read(sfd, buf, 1024);
 362         buf[i] = '\0';
 363         close(sfd);
 364         /*
 365          * Skip the extraneous fields. This loses if the
 366          * command name has any spaces in it.  So be it.
 367          */
 368         for (i = 0, s = buf; i < 30; i++) {
 369                 while (*++s != ' ') {
 370                         if (!*s)
 371                                 break;
 372                 }
 373         }
 374         if (sscanf(s, "%u%u%u%u",
 375                    &signalled, &blocked, &ignored, &caught) != 4) {
 376                 fprintf(stderr, "/proc/pid/stat format error\n");
 377                 return 1;
 378         }
 379 #ifdef DEBUG
 380         fprintf(stderr, "sigs: %08x %08x %08x %08x\n",
 381                 signalled, blocked, ignored, caught);
 382 #endif
 383         if ((ignored & sigmask(sig)) || (caught & sigmask(sig)))
 384                 return 1;
 385 #endif /* LINUX */
 386
 387 #ifdef SUNOS4
 388         void (*u_signal)();
 389
 390         if (upeek(tcp->pid, uoff(u_signal[0]) + sig*sizeof(u_signal),
 391             (long *) &u_signal) < 0) {
 392                 return 0;
 393         }
 394         if (u_signal != SIG_DFL)
 395                 return 1;
 396 #endif /* SUNOS4 */
 397
 398 #ifdef SVR4
 399         /*
 400          * Since procfs doesn't interfere with wait I think it is safe
 401          * to punt on this question.  If not, the information is there.
 402          */
 403         return 1;
 404 #else /* !SVR4 */
 405         switch (sig) {
 406         case SIGCONT:
 407         case SIGSTOP:
 408         case SIGTSTP:
 409         case SIGTTIN:
 410         case SIGTTOU:
 411         case SIGCHLD:
 412         case SIGIO:
 413 #if defined(SIGURG) && SIGURG != SIGIO
 414         case SIGURG:
 415 #endif
 416         case SIGWINCH:
 417                 /* Gloria Gaynor says ... */
 418                 return 1;
 419         default:
 420                 break;
 421         }
 422         return 0;
 423 #endif /* !SVR4 */
 424 }
 425
 426 #if defined(SUNOS4)
 427
 428 int
 429 sys_sigvec(tcp)
 430 struct tcb *tcp;
 431 {
 432         struct sigvec sv;
 433         long addr;
 434
 435         if (entering(tcp)) {
 436                 printsignal(tcp->u_arg[0]);
 437                 tprintf(", ");
 438                 addr = tcp->u_arg[1];
 439         } else {
 440                 addr = tcp->u_arg[2];
 441         }
 442         if (addr == 0)
 443                 tprintf("NULL");
 444         else if (!verbose(tcp))
 445                 tprintf("%#lx", addr);
 446         else if (umove(tcp, addr, &sv) < 0)
 447                 tprintf("{...}");
 448         else {
 449                 switch ((int) sv.sv_handler) {
 450                 case (int) SIG_ERR:
 451                         tprintf("{SIG_ERR}");
 452                         break;
 453                 case (int) SIG_DFL:
 454                         tprintf("{SIG_DFL}");
 455                         break;
 456                 case (int) SIG_IGN:
 457                         if (tcp->u_arg[0] == SIGTRAP) {
 458                                 tcp->flags |= TCB_SIGTRAPPED;
 459                                 kill(tcp->pid, SIGSTOP);
 460                         }
 461                         tprintf("{SIG_IGN}");
 462                         break;
 463                 case (int) SIG_HOLD:
 464                         if (tcp->u_arg[0] == SIGTRAP) {
 465                                 tcp->flags |= TCB_SIGTRAPPED;
 466                                 kill(tcp->pid, SIGSTOP);
 467                         }
 468                         tprintf("SIG_HOLD");
 469                         break;
 470                 default:
 471                         if (tcp->u_arg[0] == SIGTRAP) {
 472                                 tcp->flags |= TCB_SIGTRAPPED;
 473                                 kill(tcp->pid, SIGSTOP);
 474                         }
 475                         tprintf("{%#lx, ", (unsigned long) sv.sv_handler);
 476                         printsigmask(&sv.sv_mask, 0);
 477                         tprintf(", ");
 478                         if (!printflags(sigvec_flags, sv.sv_flags))
 479                                 tprintf("0");
 480                         tprintf("}");
 481                 }
 482         }
 483         if (entering(tcp))
 484                 tprintf(", ");
 485         return 0;
 486 }
 487
 488 int
 489 sys_sigpause(tcp)
 490 struct tcb *tcp;
 491 {
 492         if (entering(tcp)) {    /* WTA: UD had a bug here: he forgot the braces */
 493                 sigset_t sigm;
 494                 long_to_sigset(tcp->u_arg[0], &sigm);
 495                 printsigmask(&sigm, 0);
 496         }
 497         return 0;
 498 }
 499
 500 int
 501 sys_sigstack(tcp)
 502 struct tcb *tcp;
 503 {
 504         struct sigstack ss;
 505         long addr;
 506
 507         if (entering(tcp))
 508                 addr = tcp->u_arg[0];
 509         else
 510                 addr = tcp->u_arg[1];
 511         if (addr == 0)
 512                 tprintf("NULL");
 513         else if (umove(tcp, addr, &ss) < 0)
 514                 tprintf("%#lx", addr);
 515         else {
 516                 tprintf("{ss_sp %#lx ", (unsigned long) ss.ss_sp);
 517                 tprintf("ss_onstack %s}", ss.ss_onstack ? "YES" : "NO");
 518         }
 519         if (entering(tcp))
 520                 tprintf(", ");
 521         return 0;
 522 }
 523
 524 int
 525 sys_sigcleanup(tcp)
 526 struct tcb *tcp;
 527 {
 528         return 0;
 529 }
 530
 531 #endif /* SUNOS4 */
 532
 533 #ifndef SVR4
 534
 535 int
 536 sys_sigsetmask(tcp)
 537 struct tcb *tcp;
 538 {
 539         if (entering(tcp)) {
 540                 sigset_t sigm;
 541                 long_to_sigset(tcp->u_arg[0], &sigm);
 542                 printsigmask(&sigm, 0);
 543                 if ((tcp->u_arg[0] & sigmask(SIGTRAP))) {
 544                         /* Mark attempt to block SIGTRAP */
 545                         tcp->flags |= TCB_SIGTRAPPED;
 546                         /* Send unblockable signal */
 547                         kill(tcp->pid, SIGSTOP);
 548                 }
 549         }
 550         else if (!syserror(tcp)) {
 551                 sigset_t sigm;
 552                 long_to_sigset(tcp->u_rval, &sigm);
 553                 tcp->auxstr = sprintsigmask("old mask ", &sigm, 0);
 554
 555                 return RVAL_HEX | RVAL_STR;
 556         }
 557         return 0;
 558 }
 559
 560 int
 561 sys_sigblock(tcp)
 562 struct tcb *tcp;
 563 {
 564         return sys_sigsetmask(tcp);
 565 }
 566
 567 #endif /* !SVR4 */
 568
 569 #ifdef HAVE_SIGACTION
 570
 571 #ifdef LINUX
 572 struct old_sigaction {
 573         __sighandler_t __sa_handler;
 574         unsigned long sa_mask;
 575         unsigned long sa_flags;
 576         void (*sa_restorer)(void);
 577 };
 578 #define SA_HANDLER __sa_handler
 579 #endif /* LINUX */
 580
 581 #ifndef SA_HANDLER
 582 #define SA_HANDLER sa_handler
 583 #endif
 584
 585 int
 586 sys_sigaction(tcp)
 587 struct tcb *tcp;
 588 {
 589         long addr;
 590         sigset_t sigset;
 591 #ifdef LINUX
 592         struct old_sigaction sa;
 593 #else
 594         struct sigaction sa;
 595 #endif
 596
 597
 598         if (entering(tcp)) {
 599                 printsignal(tcp->u_arg[0]);
 600                 tprintf(", ");
 601                 addr = tcp->u_arg[1];
 602         } else
 603                 addr = tcp->u_arg[2];
 604         if (addr == 0)
 605                 tprintf("NULL");
 606         else if (!verbose(tcp))
 607                 tprintf("%#lx", addr);
 608         else if (umove(tcp, addr, &sa) < 0)
 609                 tprintf("{...}");
 610         else {
 611                 switch ((long) sa.SA_HANDLER) {
 612                 case (long) SIG_ERR:
 613                         tprintf("{SIG_ERR}");
 614                         break;
 615                 case (long) SIG_DFL:
 616                         tprintf("{SIG_DFL}");
 617                         break;
 618                 case (long) SIG_IGN:
 619 #ifndef SVR4
 620                         if (tcp->u_arg[0] == SIGTRAP) {
 621                                 tcp->flags |= TCB_SIGTRAPPED;
 622                                 kill(tcp->pid, SIGSTOP);
 623                         }
 624 #endif /* !SVR4 */
 625                         tprintf("{SIG_IGN}");
 626                         break;
 627                 default:
 628 #ifndef SVR4
 629                         if (tcp->u_arg[0] == SIGTRAP) {
 630                                 tcp->flags |= TCB_SIGTRAPPED;
 631                                 kill(tcp->pid, SIGSTOP);
 632                         }
 633 #endif /* !SVR4 */
 634                         tprintf("{%#lx, ", (long) sa.SA_HANDLER);
 635 #ifndef LINUX
 636                         printsigmask (&sa.sa_mask, 0);
 637 #else
 638                         long_to_sigset(sa.sa_mask, &sigset);
 639                         printsigmask(&sigset, 0);
 640 #endif
 641                         tprintf(", ");
 642                         if (!printflags(sigact_flags, sa.sa_flags))
 643                                 tprintf("0");
 644                         tprintf("}");
 645                 }
 646         }
 647         if (entering(tcp))
 648                 tprintf(", ");
 649 #ifdef LINUX
 650         else
 651                 tprintf(", %#lx", (unsigned long) sa.sa_restorer);
 652 #endif
 653         return 0;
 654 }
 655
 656 int
 657 sys_signal(tcp)
 658 struct tcb *tcp;
 659 {
 660         if (entering(tcp)) {
 661                 printsignal(tcp->u_arg[0]);
 662                 switch (tcp->u_arg[1]) {
 663                 case (int) SIG_ERR:
 664                         tprintf("SIG_ERR");
 665                         break;
 666                 case (int) SIG_DFL:
 667                         tprintf("SIG_DFL");
 668                         break;
 669                 case (int) SIG_IGN:
 670 #ifndef SVR4
 671                         if (tcp->u_arg[0] == SIGTRAP) {
 672                                 tcp->flags |= TCB_SIGTRAPPED;
 673                                 kill(tcp->pid, SIGSTOP);
 674                         }
 675 #endif /* !SVR4 */
 676                         tprintf("SIG_IGN");
 677                         break;
 678                 default:
 679 #ifndef SVR4
 680                         if (tcp->u_arg[0] == SIGTRAP) {
 681                                 tcp->flags |= TCB_SIGTRAPPED;
 682                                 kill(tcp->pid, SIGSTOP);
 683                         }
 684 #endif /* !SVR4 */
 685                         tprintf("%#lx", tcp->u_arg[1]);
 686                 }
 687         }
 688         return 0;
 689 }
 690
 691 #endif /* HAVE_SIGACTION */
 692
 693 #ifdef LINUX
 694
 695 int
 696 sys_sigreturn(tcp)
 697 struct tcb *tcp;
 698 {
 699 #ifdef S390
 700     long usp;
 701     struct sigcontext_struct sc;
 702
 703     if (entering(tcp)) {
 704             tcp->u_arg[0] = 0;
 705             if (upeek(tcp->pid,PT_GPR15,&usp)<0)
 706                     return 0;
 707             if (umove(tcp, usp+__SIGNAL_FRAMESIZE, &sc) < 0)
 708                     return 0;
 709             tcp->u_arg[0] = 1;
 710             memcpy(&tcp->u_arg[1],&sc.oldmask[0],sizeof(sigset_t));
 711     } else {
 712             tcp->u_rval = tcp->u_error = 0;
 713             if (tcp->u_arg[0] == 0)
 714                     return 0;
 715             tcp->auxstr = sprintsigmask("mask now ",(sigset_t *)&tcp->u_arg[1]);
 716             return RVAL_NONE | RVAL_STR;
 717     }
 718     return 0;
 719 #else
 720 #ifdef I386
 721         long esp;
 722         struct sigcontext_struct sc;
 723
 724         if (entering(tcp)) {
 725                 tcp->u_arg[0] = 0;
 726                 if (upeek(tcp->pid, 4*UESP, &esp) < 0)
 727                         return 0;
 728                 if (umove(tcp, esp, &sc) < 0)
 729                         return 0;
 730                 tcp->u_arg[0] = 1;
 731                 tcp->u_arg[1] = sc.oldmask;
 732         }
 733         else {
 734                 sigset_t sigm;
 735                 long_to_sigset(tcp->u_arg[1], &sigm);
 736                 tcp->u_rval = tcp->u_error = 0;
 737                 if (tcp->u_arg[0] == 0)
 738                         return 0;
 739                 tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
 740                 return RVAL_NONE | RVAL_STR;
 741         }
 742         return 0;
 743 #else /* !I386 */
 744 #ifdef POWERPC
 745        long esp;
 746        struct sigcontext_struct sc;
 747
 748        if (entering(tcp)) {
 749                    tcp->u_arg[0] = 0;
 750                    if (upeek(tcp->pid, 4*PT_R1, &esp) < 0)
 751                            return 0;
 752                    if (umove(tcp, esp, &sc) < 0)
 753                            return 0;
 754                    tcp->u_arg[0] = 1;
 755                    tcp->u_arg[1] = sc.oldmask;
 756        }
 757        else {
 758                    sigset_t sigm;
 759                    long_to_sigset(tcp->u_arg[1], &sigm);
 760                    tcp->u_rval = tcp->u_error = 0;
 761                    if (tcp->u_arg[0] == 0)
 762                            return 0;
 763                    tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
 764                    return RVAL_NONE | RVAL_STR;
 765        }
 766        return 0;
 767 #else /* !POWERPC */
 768 #ifdef M68K
 769         long usp;
 770         struct sigcontext sc;
 771
 772         if (entering(tcp)) {
 773             tcp->u_arg[0] = 0;
 774             if (upeek(tcp->pid, 4*PT_USP, &usp) < 0)
 775                         return 0;
 776             if (umove(tcp, usp, &sc) < 0)
 777                         return 0;
 778             tcp->u_arg[0] = 1;
 779             tcp->u_arg[1] = sc.sc_mask;
 780         }
 781         else {
 782             sigset_t sigm;
 783             long_to_sigset(tcp->u_arg[1], &sigm);
 784             tcp->u_rval = tcp->u_error = 0;
 785             if (tcp->u_arg[0] == 0)
 786                         return 0;
 787             tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
 788             return RVAL_NONE | RVAL_STR;
 789         }
 790         return 0;
 791 #else /* !M68K */
 792 #ifdef ALPHA
 793         long fp;
 794         struct sigcontext_struct sc;
 795
 796         if (entering(tcp)) {
 797             tcp->u_arg[0] = 0;
 798             if (upeek(tcp->pid, REG_FP, &fp) < 0)
 799                         return 0;
 800             if (umove(tcp, fp, &sc) < 0)
 801                         return 0;
 802             tcp->u_arg[0] = 1;
 803             tcp->u_arg[1] = sc.sc_mask;
 804         }
 805         else {
 806             sigset_t sigm;
 807             long_to_sigset(tcp->u_arg[1], &sigm);
 808             tcp->u_rval = tcp->u_error = 0;
 809             if (tcp->u_arg[0] == 0)
 810                         return 0;
 811             tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
 812             return RVAL_NONE | RVAL_STR;
 813         }
 814         return 0;
 815 #else
 816 #ifdef SPARC
 817         long i1;
 818         struct regs regs;
 819         m_siginfo_t si;
 820
 821         if(ptrace(PTRACE_GETREGS, tcp->pid, (char *)&regs, 0) < 0) {
 822             perror("sigreturn: PTRACE_GETREGS ");
 823             return 0;
 824         }
 825         if(entering(tcp)) {
 826                 tcp->u_arg[0] = 0;
 827                 i1 = regs.r_o1;
 828                 if(umove(tcp, i1, &si) < 0) {
 829                         perror("sigreturn: umove ");
 830                         return 0;
 831                 }
 832                 tcp->u_arg[0] = 1;
 833                 tcp->u_arg[1] = si.si_mask;
 834         } else {
 835                 sigset_t sigm;
 836                 long_to_sigset(tcp->u_arg[1], &sigm);
 837                 tcp->u_rval = tcp->u_error = 0;
 838                 if(tcp->u_arg[0] == 0)
 839                         return 0;
 840                 tcp->auxstr = sprintsigmask("mask now ", &sigm, 0);
 841                 return RVAL_NONE | RVAL_STR;
 842         }
 843         return 0;
 844 #else
 845 #ifdef MIPS
 846         long sp;
 847         struct sigcontext sc;
 848
 849         if(entering(tcp)) {
 850                 tcp->u_arg[0] = 0;
 851                 if (upeek(tcp->pid, REG_SP, &sp) < 0)
 852                         return 0;
 853                 if (umove(tcp, sp, &sc) < 0)
 854                         return 0;
 855                 tcp->u_arg[0] = 1;
 856                 tcp->u_arg[1] = sc.sc_sigset;
 857         } else {
 858                 tcp->u_rval = tcp->u_error = 0;
 859                 if(tcp->u_arg[0] == 0)
 860                         return 0;
 861                 tcp->auxstr = sprintsigmask("mask now ", tcp->u_arg[1]);
 862                 return RVAL_NONE | RVAL_STR;
 863         }
 864         return 0;
 865 #endif /* MIPS */
 866 #endif /* SPARC */
 867 #endif /* ALPHA */
 868 #endif /* !M68K */
 869 #endif /* !POWERPC */
 870 #endif /* !I386 */
 871 #endif /* S390 */
 872 }
 873
 874 int
 875 sys_siggetmask(tcp)
 876 struct tcb *tcp;
 877 {
 878         if (exiting(tcp)) {
 879                 sigset_t sigm;
 880                 long_to_sigset(tcp->u_rval, &sigm);
 881                 tcp->auxstr = sprintsigmask("mask ", &sigm, 0);
 882         }
 883         return RVAL_HEX | RVAL_STR;
 884 }
 885
 886 int
 887 sys_sigsuspend(tcp)
 888 struct tcb *tcp;
 889 {
 890         if (entering(tcp)) {
 891                 sigset_t sigm;
 892                 long_to_sigset(tcp->u_arg[2], &sigm);
 893 #if 0
 894                 /* first two are not really arguments, but print them anyway */
 895                 /* nevermind, they are an anachronism now, too bad... */
 896                 tprintf("%d, %#x, ", tcp->u_arg[0], tcp->u_arg[1]);
 897 #endif
 898                 printsigmask(&sigm, 0);
 899         }
 900         return 0;
 901 }
 902
 903 #endif /* LINUX */
 904
 905 #ifdef SVR4
 906
 907 int
 908 sys_sigsuspend(tcp)
 909 struct tcb *tcp;
 910 {
 911         sigset_t sigset;
 912
 913         if (entering(tcp)) {
 914                 if (umove(tcp, tcp->u_arg[0], &sigset) < 0)
 915                         tprintf("[?]");
 916                 else
 917                         printsigmask(&sigset, 0);
 918         }
 919         return 0;
 920 }
 921 static struct xlat ucontext_flags[] = {
 922         { UC_SIGMASK,   "UC_SIGMASK"    },
 923         { UC_STACK,     "UC_STACK"      },
 924         { UC_CPU,       "UC_CPU"        },
 925 #ifdef UC_FPU
 926         { UC_FPU,       "UC_FPU"        },
 927 #endif
 928 #ifdef UC_INTR
 929         { UC_INTR,      "UC_INTR"       },
 930 #endif
 931         { 0,            NULL            },
 932 };
 933
 934 #endif
 935
 936 #if defined SVR4 || defined LINUX
 937 #if defined LINUX && !defined SS_ONSTACK
 938 #define SS_ONSTACK      1
 939 #define SS_DISABLE      2
 940 #if __GLIBC_MINOR__ == 0
 941 typedef struct
 942 {
 943         __ptr_t ss_sp;
 944         int ss_flags;
 945         size_t ss_size;
 946 } stack_t;
 947 #endif
 948 #endif
 949
 950 static struct xlat sigaltstack_flags[] = {
 951         { SS_ONSTACK,   "SS_ONSTACK"    },
 952         { SS_DISABLE,   "SS_DISABLE"    },
 953         { 0,            NULL            },
 954 };
 955 #endif
 956
 957 #ifdef SVR4
 958 static void
 959 printcontext(tcp, ucp)
 960 struct tcb *tcp;
 961 ucontext_t *ucp;
 962 {
 963         tprintf("{");
 964         if (!abbrev(tcp)) {
 965                 tprintf("uc_flags=");
 966                 if (!printflags(ucontext_flags, ucp->uc_flags))
 967                         tprintf("0");
 968                 tprintf(", uc_link=%#lx, ", (unsigned long) ucp->uc_link);
 969         }
 970         tprintf("uc_sigmask=");
 971         printsigmask(ucp->uc_sigmask, 0);
 972         if (!abbrev(tcp)) {
 973                 tprintf(", uc_stack={ss_sp=%#lx, ss_size=%d, ss_flags=",
 974                         (unsigned long) ucp->uc_stack.ss_sp,
 975                         ucp->uc_stack.ss_size);
 976                 if (!printflags(sigaltstack_flags, ucp->uc_stack.ss_flags))
 977                         tprintf("0");
 978                 tprintf("}");
 979         }
 980         tprintf(", ...}");
 981 }
 982
 983 int
 984 sys_getcontext(tcp)
 985 struct tcb *tcp;
 986 {
 987         ucontext_t uc;
 988
 989         if (entering(tcp)) {
 990                 if (!tcp->u_arg[0])
 991                         tprintf("NULL");
 992                 else if (umove(tcp, tcp->u_arg[0], &uc) < 0)
 993                         tprintf("{...}");
 994                 else
 995                         printcontext(tcp, &uc);
 996         }
 997         return 0;
 998 }
 999
1000 int
1001 sys_setcontext(tcp)
1002 struct tcb *tcp;
1003 {
1004         ucontext_t uc;
1005
1006         if (entering(tcp)) {
1007                 if (!tcp->u_arg[0])
1008                         tprintf("NULL");
1009                 else if (umove(tcp, tcp->u_arg[0], &uc) < 0)
1010                         tprintf("{...}");
1011                 else
1012                         printcontext(tcp, &uc);
1013         }
1014         else {
1015                 tcp->u_rval = tcp->u_error = 0;
1016                 if (tcp->u_arg[0] == 0)
1017                         return 0;
1018                 return RVAL_NONE;
1019         }
1020         return 0;
1021 }
1022
1023 #endif /* SVR4 */
1024
1025 #ifdef LINUX
1026
1027 static int
1028 print_stack_t(tcp, addr)
1029 struct tcb *tcp;
1030 unsigned long addr;
1031 {
1032         stack_t ss;
1033         if (umove(tcp, addr, &ss) < 0)
1034                 return -1;
1035         tprintf("{ss_sp=%#lx, ss_flags=", (unsigned long) ss.ss_sp);
1036         if (!printflags(sigaltstack_flags, ss.ss_flags))
1037                 tprintf("0");
1038         tprintf(", ss_size=%lu}", (unsigned long) ss.ss_size);
1039         return 0;
1040 }
1041
1042 int
1043 sys_sigaltstack(tcp)
1044         struct tcb *tcp;
1045 {
1046         if (entering(tcp)) {
1047                 if (tcp->u_arg[0] == 0)
1048                         tprintf("NULL");
1049                 else if (print_stack_t(tcp, tcp->u_arg[0]) < 0)
1050                         return -1;
1051         }
1052         else {
1053                 tprintf(", ");
1054                 if (tcp->u_arg[1] == 0)
1055                         tprintf("NULL");
1056                 else if (print_stack_t(tcp, tcp->u_arg[1]) < 0)
1057                         return -1;
1058         }
1059         return 0;
1060 }
1061 #endif
1062
1063 #ifdef HAVE_SIGACTION
1064
1065 int
1066 sys_sigprocmask(tcp)
1067 struct tcb *tcp;
1068 {
1069 #ifdef ALPHA
1070         if (entering(tcp)) {
1071                 printxval(sigprocmaskcmds, tcp->u_arg[0], "SIG_???");
1072                 tprintf(", ");
1073                 printsigmask(tcp->u_arg[1], 0);
1074         }
1075         else if (!syserror(tcp)) {
1076                 tcp->auxstr = sprintsigmask("old mask ", tcp->u_rval, 0);
1077                 return RVAL_HEX | RVAL_STR;
1078         }
1079 #else /* !ALPHA */
1080         sigset_t sigset;
1081
1082         if (entering(tcp)) {
1083 #ifdef SVR4
1084                 if (tcp->u_arg[0] == 0)
1085                         tprintf("0");
1086                 else
1087 #endif /* SVR4 */
1088                 printxval(sigprocmaskcmds, tcp->u_arg[0], "SIG_???");
1089                 tprintf(", ");
1090                 if (!tcp->u_arg[1])
1091                         tprintf("NULL, ");
1092                 else if (copy_sigset(tcp, tcp->u_arg[1], &sigset) < 0)
1093                         tprintf("%#lx, ", tcp->u_arg[1]);
1094                 else {
1095                         printsigmask(&sigset, 0);
1096                         tprintf(", ");
1097                 }
1098         }
1099         else {
1100                 if (!tcp->u_arg[2])
1101                         tprintf("NULL");
1102                 else if (syserror(tcp))
1103                         tprintf("%#lx", tcp->u_arg[2]);
1104                 else if (copy_sigset(tcp, tcp->u_arg[2], &sigset) < 0)
1105                         tprintf("[?]");
1106                 else
1107                         printsigmask(&sigset, 0);
1108         }
1109 #endif /* !ALPHA */
1110         return 0;
1111 }
1112
1113 #endif /* HAVE_SIGACTION */
1114
1115 int
1116 sys_kill(tcp)
1117 struct tcb *tcp;
1118 {
1119         if (entering(tcp)) {
1120                 tprintf("%ld, %s", tcp->u_arg[0], signame(tcp->u_arg[1]));
1121         }
1122         return 0;
1123 }
1124
1125 int
1126 sys_killpg(tcp)
1127 struct tcb *tcp;
1128 {
1129         return sys_kill(tcp);
1130 }
1131
1132 int
1133 sys_sigpending(tcp)
1134 struct tcb *tcp;
1135 {
1136         sigset_t sigset;
1137
1138         if (exiting(tcp)) {
1139                 if (syserror(tcp))
1140                         tprintf("%#lx", tcp->u_arg[0]);
1141                 else if (copy_sigset(tcp, tcp->u_arg[0], &sigset) < 0)
1142                         tprintf("[?]");
1143                 else
1144                         printsigmask(&sigset, 0);
1145         }
1146         return 0;
1147 }
1148
1149 #ifdef LINUX
1150
1151         int
1152 sys_rt_sigprocmask(tcp)
1153         struct tcb *tcp;
1154 {
1155         sigset_t sigset;
1156
1157         /* Note: arg[3] is the length of the sigset. */
1158         if (entering(tcp)) {
1159                 printxval(sigprocmaskcmds, tcp->u_arg[0], "SIG_???");
1160                 tprintf(", ");
1161                 if (!tcp->u_arg[1])
1162                         tprintf("NULL, ");
1163                 else if (copy_sigset_len(tcp, tcp->u_arg[1], &sigset, tcp->u_arg[3]) < 0)
1164                         tprintf("%#lx, ", tcp->u_arg[1]);
1165                 else {
1166                         printsigmask(&sigset, 1);
1167                         tprintf(", ");
1168                 }
1169         }
1170         else {
1171                 if (!tcp->u_arg[2])
1172
1173                         tprintf("NULL");
1174                 else if (syserror(tcp))
1175                         tprintf("%#lx", tcp->u_arg[2]);
1176                 else if (copy_sigset_len(tcp, tcp->u_arg[2], &sigset, tcp->u_arg[3]) < 0)
1177                         tprintf("[?]");
1178                 else
1179                         printsigmask(&sigset, 1);
1180                 tprintf(", %lu", tcp->u_arg[3]);
1181         }
1182         return 0;
1183 }
1184
1185 #if __GLIBC_MINOR__ < 1
1186 /* Type for data associated with a signal.  */
1187 typedef union sigval
1188 {
1189         int sival_int;
1190         void *sival_ptr;
1191 } sigval_t;
1192
1193 # define __SI_MAX_SIZE     128
1194 # define __SI_PAD_SIZE     ((__SI_MAX_SIZE / sizeof (int)) - 3)
1195
1196 typedef struct siginfo
1197 {
1198         int si_signo;               /* Signal number.  */
1199         int si_errno;               /* If non-zero, an errno value associated with
1200                                                                    this signal, as defined in <errno.h>.  */
1201         int si_code;                /* Signal code.  */
1202
1203         union
1204         {
1205                 int _pad[__SI_PAD_SIZE];
1206
1207                 /* kill().  */
1208                 struct
1209                 {
1210                         __pid_t si_pid;     /* Sending process ID.  */
1211                         __uid_t si_uid;     /* Real user ID of sending process.  */
1212                 } _kill;
1213
1214                 /* POSIX.1b timers.  */
1215                 struct
1216                 {
1217                         unsigned int _timer1;
1218                         unsigned int _timer2;
1219                 } _timer;
1220
1221                 /* POSIX.1b signals.  */
1222                 struct
1223                 {
1224                         __pid_t si_pid;     /* Sending process ID.  */
1225                         __uid_t si_uid;     /* Real user ID of sending process.  */
1226                         sigval_t si_sigval; /* Signal value.  */
1227                 } _rt;
1228
1229                 /* SIGCHLD.  */
1230                 struct
1231                 {
1232                         __pid_t si_pid;     /* Which child.  */
1233                         int si_status;      /* Exit value or signal.  */
1234                         __clock_t si_utime;
1235                         __clock_t si_stime;
1236                 } _sigchld;
1237
1238                 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS.  */
1239                 struct
1240                 {
1241                         void *si_addr;      /* Faulting insn/memory ref.  */
1242                 } _sigfault;
1243
1244                 /* SIGPOLL.  */
1245                 struct
1246                 {
1247                         int si_band;        /* Band event for SIGPOLL.  */
1248                         int si_fd;
1249                 } _sigpoll;
1250         } _sifields;
1251 } siginfo_t;
1252 #endif
1253
1254 /* Structure describing the action to be taken when a signal arrives.  */
1255 struct new_sigaction
1256 {
1257         union
1258         {
1259                 __sighandler_t __sa_handler;
1260                 void (*__sa_sigaction) (int, siginfo_t *, void *);
1261         }
1262         __sigaction_handler;
1263         unsigned long sa_flags;
1264         void (*sa_restorer) (void);
1265         unsigned long int sa_mask[2];
1266 };
1267
1268
1269         int
1270 sys_rt_sigaction(tcp)
1271         struct tcb *tcp;
1272 {
1273         struct new_sigaction sa;
1274         sigset_t sigset;
1275         long addr;
1276
1277         if (entering(tcp)) {
1278                 printsignal(tcp->u_arg[0]);
1279                 tprintf(", ");
1280                 addr = tcp->u_arg[1];
1281         } else
1282                 addr = tcp->u_arg[2];
1283         if (addr == 0)
1284                 tprintf("NULL");
1285         else if (!verbose(tcp))
1286                 tprintf("%#lx", addr);
1287         else if (umove(tcp, addr, &sa) < 0)
1288                 tprintf("{...}");
1289         else {
1290                 switch ((long) sa.__sigaction_handler.__sa_handler) {
1291                         case (long) SIG_ERR:
1292                                 tprintf("{SIG_ERR}");
1293                                 break;
1294                         case (long) SIG_DFL:
1295                                 tprintf("{SIG_DFL}");
1296                                 break;
1297                         case (long) SIG_IGN:
1298                                 tprintf("{SIG_IGN}");
1299                                 break;
1300                         default:
1301                                 tprintf("{%#lx, ",
1302                                                 (long) sa.__sigaction_handler.__sa_handler);
1303                                 sigemptyset(&sigset);
1304 #ifdef LINUXSPARC
1305                                 if (tcp->u_arg[4] <= sizeof(sigset))
1306                                         memcpy(&sigset, &sa.sa_mask, tcp->u_arg[4]);
1307 #else
1308                                 if (tcp->u_arg[3] <= sizeof(sigset))
1309                                         memcpy(&sigset, &sa.sa_mask, tcp->u_arg[3]);
1310 #endif
1311                                 else
1312                                         memcpy(&sigset, &sa.sa_mask, sizeof(sigset));
1313                                 printsigmask(&sigset, 1);
1314                                 tprintf(", ");
1315                                 if (!printflags(sigact_flags, sa.sa_flags))
1316                                         tprintf("0");
1317                                 tprintf("}");
1318                 }
1319         }
1320         if (entering(tcp))
1321                 tprintf(", ");
1322         else
1323 #ifdef LINUXSPARC
1324                 tprintf(", %#lx, %lu", tcp->u_arg[3], tcp->u_arg[4]);
1325 #elif defined(ALPHA)
1326                 tprintf(", %lu, %#lx", tcp->u_arg[3], tcp->u_arg[4]);
1327 #else
1328                 tprintf(", %lu", addr = tcp->u_arg[3]);
1329 #endif
1330         return 0;
1331 }
1332
1333         int
1334 sys_rt_sigpending(tcp)
1335         struct tcb *tcp;
1336 {
1337         sigset_t sigset;
1338
1339         if (exiting(tcp)) {
1340                 if (syserror(tcp))
1341                         tprintf("%#lx", tcp->u_arg[0]);
1342                 else if (copy_sigset_len(tcp, tcp->u_arg[0],
1343                                          &sigset, tcp->u_arg[1]) < 0)
1344                         tprintf("[?]");
1345                 else
1346                         printsigmask(&sigset, 1);
1347         }
1348         return 0;
1349 }
1350         int
1351 sys_rt_sigsuspend(tcp)
1352         struct tcb *tcp;
1353 {
1354         if (entering(tcp)) {
1355                 sigset_t sigm;
1356                 if (copy_sigset_len(tcp, tcp->u_arg[0], &sigm, tcp->u_arg[1]) < 0)
1357                         tprintf("[?]");
1358                 else
1359                         printsigmask(&sigm, 1);
1360         }
1361         return 0;
1362 }
1363 #ifndef ILL_ILLOPC
1364 #define ILL_ILLOPC      1       /* illegal opcode */
1365 #define ILL_ILLOPN      2       /* illegal operand */
1366 #define ILL_ILLADR      3       /* illegal addressing mode */
1367 #define ILL_ILLTRP      4       /* illegal trap */
1368 #define ILL_PRVOPC      5       /* privileged opcode */
1369 #define ILL_PRVREG      6       /* privileged register */
1370 #define ILL_COPROC      7       /* coprocessor error */
1371 #define ILL_BADSTK      8       /* internal stack error */
1372 #define FPE_INTDIV      1       /* integer divide by zero */
1373 #define FPE_INTOVF      2       /* integer overflow */
1374 #define FPE_FLTDIV      3       /* floating point divide by zero */
1375 #define FPE_FLTOVF      4       /* floating point overflow */
1376 #define FPE_FLTUND      5       /* floating point underflow */
1377 #define FPE_FLTRES      6       /* floating point inexact result */
1378 #define FPE_FLTINV      7       /* floating point invalid operation */
1379 #define FPE_FLTSUB      8       /* subscript out of range */
1380 #define SEGV_MAPERR     1       /* address not mapped to object */
1381 #define SEGV_ACCERR     2       /* invalid permissions for mapped object */
1382 #define BUS_ADRALN      1       /* invalid address alignment */
1383 #define BUS_ADRERR      2       /* non-existant physical address */
1384 #define BUS_OBJERR      3       /* object specific hardware error */
1385 #define TRAP_BRKPT      1       /* process breakpoint */
1386 #define TRAP_TRACE      2       /* process trace trap */
1387 #define CLD_EXITED      1       /* child has exited */
1388 #define CLD_KILLED      2       /* child was killed */
1389 #define CLD_DUMPED      3       /* child terminated abnormally */
1390 #define CLD_TRAPPED     4       /* traced child has trapped */
1391 #define CLD_STOPPED     5       /* child has stopped */
1392 #define CLD_CONTINUED   6       /* stopped child has continued */
1393 #define POLL_IN         1       /* data input available */
1394 #define POLL_OUT        2       /* output buffers available */
1395 #define POLL_MSG        3       /* input message available */
1396 #define POLL_ERR        4       /* i/o error */
1397 #define POLL_PRI        5       /* high priority input available */
1398 #define POLL_HUP        6       /* device disconnected */
1399 #define SI_USER         0       /* sent by kill, sigsend, raise */
1400 #define SI_QUEUE        -1      /* sent by sigqueue */
1401 #define SI_TIMER        -2      /* sent by timer expiration */
1402 #define SI_MESGQ        -3      /* sent by real time mesq state change */
1403 #define SI_ASYNCIO      -4      /* sent by AIO completion */
1404 #else
1405 #undef si_pid
1406 #undef si_uid
1407 #undef si_status
1408 #undef si_utime
1409 #undef si_stime
1410 #undef si_value
1411 #undef si_int
1412 #undef si_ptr
1413 #undef si_addr
1414 #undef si_band
1415 #undef si_fd
1416 #endif
1417
1418 static struct xlat sigill_flags[] = {
1419         {ILL_ILLOPC, "ILL_ILLOPC"},
1420         {ILL_ILLOPN, "ILL_ILLOPN"},
1421         {ILL_ILLADR, "ILL_ILLADR"},
1422         {ILL_ILLTRP, "ILL_ILLTRP"},
1423         {ILL_PRVOPC, "ILL_PRVOPC"},
1424         {ILL_PRVREG, "ILL_PRVREG"},
1425         {ILL_COPROC, "ILL_COPROC"},
1426         {ILL_BADSTK, "ILL_BADSTK"},
1427         {0, NULL}
1428 };
1429
1430 static struct xlat sigfpe_flags[] = {
1431         {FPE_INTDIV, "FPE_INTDIV"},
1432         {FPE_INTOVF, "FPE_INTOVF"},
1433         {FPE_FLTDIV, "FPE_FLTDIV"},
1434         {FPE_FLTOVF, "FPE_FLTOVF"},
1435         {FPE_FLTUND, "FPE_FLTUND"},
1436         {FPE_FLTRES, "FPE_FLTRES"},
1437         {FPE_FLTINV, "FPE_FLTINV"},
1438         {FPE_FLTSUB, "FPE_FLTSUB"},
1439         {0, NULL}
1440 };
1441
1442 static struct xlat sigsegv_flags[] = {
1443         {SEGV_MAPERR, "SEGV_MAPERR"},
1444         {SEGV_ACCERR, "SEGV_ACCERR"},
1445         {0, NULL}
1446 };
1447
1448 static struct xlat sigbus_flags[] = {
1449         {BUS_ADRALN, "BUS_ADRALN"},
1450         {BUS_ADRERR, "BUS_ADRERR"},
1451         {BUS_OBJERR, "BUS_OBJERR"},
1452         {0, NULL}
1453 };
1454
1455 static struct xlat sigtrap_flags[] = {
1456         {TRAP_BRKPT, "TRAP_BRKPT"},
1457         {TRAP_TRACE, "TRAP_TRACE"},
1458         {0, NULL}
1459 };
1460
1461 static struct xlat sigchld_flags[] = {
1462         {CLD_EXITED, "CLD_EXITED"},
1463         {CLD_KILLED, "CLD_KILLED"},
1464         {CLD_DUMPED, "CLD_DUMPED"},
1465         {CLD_TRAPPED, "CLD_TRAPPED"},
1466         {CLD_STOPPED, "CLD_STOPPED"},
1467         {CLD_CONTINUED, "CLD_CONTINUED"},
1468         {0, NULL}
1469 };
1470
1471 static struct xlat sigpoll_flags[] = {
1472         {POLL_IN, "POLL_IN"},
1473         {POLL_OUT, "POLL_OUT"},
1474         {POLL_MSG, "POLL_MSG"},
1475         {POLL_ERR, "POLL_ERR"},
1476         {POLL_PRI, "POLL_PRI"},
1477         {POLL_HUP, "POLL_HUP"},
1478         {0, NULL}
1479 };
1480
1481 static struct xlat siginfo_flags[] = {
1482         {SI_USER, "SI_USER"},
1483         {SI_QUEUE, "SI_QUEUE"},
1484         {SI_TIMER, "SI_TIMER"},
1485         {SI_MESGQ, "SI_MESGQ"},
1486         {SI_ASYNCIO, "SI_ASYNCIO"},
1487         {0, NULL}
1488 };
1489
1490         static void
1491 printsiginfo(tcp, si)
1492         struct tcb *tcp;
1493         siginfo_t *si;
1494 {
1495         tprintf("{si_signo=");
1496         printsignal(si->si_signo);
1497         tprintf(", si_errno=%d, si_code=", si->si_errno);
1498         switch(si->si_signo)
1499         {
1500                 case SIGILL:
1501                         if (!printflags(sigill_flags, si->si_code))
1502                                 tprintf("%d /* ILL_??? */", si->si_code);
1503                         tprintf(", si_addr=%lx",
1504                                         (unsigned long) si->_sifields._sigfault.si_addr);
1505                         break;
1506                 case SIGFPE:
1507                         if (!printflags(sigfpe_flags, si->si_code))
1508                                 tprintf("%d /* FPE_??? */", si->si_code);
1509                         tprintf(", si_addr=%lx",
1510                                         (unsigned long) si->_sifields._sigfault.si_addr);
1511                         break;
1512                 case SIGSEGV:
1513                         if (!printflags(sigsegv_flags, si->si_code))
1514                                 tprintf("%d /* SEGV_??? */", si->si_code);
1515                         tprintf(", si_addr=%lx",
1516                                         (unsigned long) si->_sifields._sigfault.si_addr);
1517                         break;
1518                 case SIGBUS:
1519                         if (!printflags(sigbus_flags, si->si_code))
1520                                 tprintf("%d /* BUS_??? */", si->si_code);
1521                         tprintf(", si_addr=%lx",
1522                                         (unsigned long) si->_sifields._sigfault.si_addr);
1523                         break;
1524                 case SIGTRAP:
1525                         if (!printflags(sigtrap_flags, si->si_code))
1526                                 tprintf("%d /* TRAP_??? */", si->si_code);
1527                         break;
1528                 case SIGCHLD:
1529                         if (!printflags(sigchld_flags, si->si_code))
1530                                 tprintf("%d /* CLD_??? */", si->si_code);
1531                         if (!verbose(tcp))
1532                                 tprintf(", ...");
1533                         else
1534                                 tprintf(", si_pid=%d, si_uid=%d, si_status=%d, si_utime=%lu, si_stime=%lu",
1535                                                 si->_sifields._kill.si_pid,
1536                                                 si->_sifields._kill.si_uid,
1537                                                 si->_sifields._sigchld.si_status,
1538                                                 si->_sifields._sigchld.si_utime,
1539                                                 si->_sifields._sigchld.si_stime);
1540                         break;
1541                 case SIGPOLL:
1542                         if (!printflags(sigpoll_flags, si->si_code))
1543                                 tprintf("%d /* POLL_??? */", si->si_code);
1544                         if (si->si_code == POLL_IN
1545                                         || si->si_code == POLL_OUT
1546                                         || si->si_code == POLL_MSG)
1547                                 tprintf(", si_bind=%lu, si_fd=%d",
1548                                                 (unsigned long) si->_sifields._sigpoll.si_band,
1549                                                 si->_sifields._sigpoll.si_fd);
1550                         break;
1551                 default:
1552                         if (!printflags(siginfo_flags, si->si_code))
1553                                 tprintf("%d /* SI_??? */", si->si_code);
1554                         tprintf(", si_pid=%lu, si_uid=%lu, si_value={",
1555                                         (unsigned long) si->_sifields._rt.si_pid,
1556                                         (unsigned long) si->_sifields._rt.si_uid);
1557                         if (!verbose(tcp))
1558                                 tprintf("...");
1559                         else {
1560                                 tprintf("sival_int=%u, sival_ptr=%#lx",
1561                                                 si->_sifields._rt.si_sigval.sival_int,
1562                                                 (unsigned long) si->_sifields._rt.si_sigval.sival_ptr);
1563                         }
1564                         tprintf("}");
1565                         break;
1566         }
1567         tprintf("}");
1568 }
1569
1570         int
1571 sys_rt_sigqueueinfo(tcp)
1572         struct tcb *tcp;
1573 {
1574         if (entering(tcp)) {
1575                 siginfo_t si;
1576                 tprintf("%lu, ", tcp->u_arg[0]);
1577                 printsignal(tcp->u_arg[1]);
1578                 tprintf(", ");
1579                 if (umove(tcp, tcp->u_arg[2], &si) < 0)
1580                         tprintf("%#lx", tcp->u_arg[2]);
1581                 else
1582                         printsiginfo(&si);
1583         }
1584         return 0;
1585 }
1586
1587 int sys_rt_sigtimedwait(tcp)
1588         struct tcb *tcp;
1589 {
1590         if (entering(tcp)) {
1591                 sigset_t sigset;
1592
1593                 if (copy_sigset_len(tcp, tcp->u_arg[0],
1594                                     &sigset, tcp->u_arg[3]) < 0)
1595                         tprintf("[?]");
1596                 else
1597                         printsigmask(&sigset, 1);
1598                 tprintf(", ");
1599         }
1600         else {
1601                 if (syserror(tcp))
1602                         tprintf("%#lx", tcp->u_arg[0]);
1603                 else {
1604                         siginfo_t si;
1605                         if (umove(tcp, tcp->u_arg[1], &si) < 0)
1606                                 tprintf("%#lx", tcp->u_arg[1]);
1607                         else
1608                                 printsiginfo(&si);
1609                         /* XXX For now */
1610                         tprintf(", %#lx", tcp->u_arg[2]);
1611                         tprintf(", %d", (int) tcp->u_arg[3]);
1612                 }
1613         }
1614         return 0;
1615 };
1616
1617 #endif /* LINUX */
1618