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.
35 #include <sys/param.h>
37 /* for struct iovec */
44 # undef PTRACE_GETREGS
45 # define PTRACE_GETREGS PTRACE_GETREGS64
46 # undef PTRACE_SETREGS
47 # define PTRACE_SETREGS PTRACE_SETREGS64
51 # include <asm/psrcompat.h>
57 # define NT_PRSTATUS 1
61 # warning: NSIG is not defined, using 32
67 /* Define these shorthand notations to simplify the syscallent files. */
71 #define TN TRACE_NETWORK
72 #define TP TRACE_PROCESS
73 #define TS TRACE_SIGNAL
74 #define TM TRACE_MEMORY
75 #define NF SYSCALL_NEVER_FAILS
77 #define SI STACKTRACE_INVALIDATE_CACHE
78 #define SE STACKTRACE_CAPTURE_ON_ENTER
80 const struct_sysent sysent0[] = {
81 #include "syscallent.h"
84 #if SUPPORTED_PERSONALITIES > 1
85 static const struct_sysent sysent1[] = {
86 # include "syscallent1.h"
90 #if SUPPORTED_PERSONALITIES > 2
91 static const struct_sysent sysent2[] = {
92 # include "syscallent2.h"
96 /* Now undef them since short defines cause wicked namespace pollution. */
110 * `ioctlent[012].h' files are automatically generated by the auxiliary
111 * program `ioctlsort', such that the list is sorted by the `code' field.
112 * This has the side-effect of resolving the _IO.. macros into
113 * plain integers, eliminating the need to include here everything
117 const char *const errnoent0[] = {
118 #include "errnoent.h"
120 const char *const signalent0[] = {
121 #include "signalent.h"
123 const struct_ioctlent ioctlent0[] = {
124 #include "ioctlent0.h"
127 #if SUPPORTED_PERSONALITIES > 1
128 static const char *const errnoent1[] = {
129 # include "errnoent1.h"
131 static const char *const signalent1[] = {
132 # include "signalent1.h"
134 static const struct_ioctlent ioctlent1[] = {
135 # include "ioctlent1.h"
139 #if SUPPORTED_PERSONALITIES > 2
140 static const char *const errnoent2[] = {
141 # include "errnoent2.h"
143 static const char *const signalent2[] = {
144 # include "signalent2.h"
146 static const struct_ioctlent ioctlent2[] = {
147 # include "ioctlent2.h"
152 nsyscalls0 = ARRAY_SIZE(sysent0)
153 #if SUPPORTED_PERSONALITIES > 1
154 , nsyscalls1 = ARRAY_SIZE(sysent1)
155 # if SUPPORTED_PERSONALITIES > 2
156 , nsyscalls2 = ARRAY_SIZE(sysent2)
162 nerrnos0 = ARRAY_SIZE(errnoent0)
163 #if SUPPORTED_PERSONALITIES > 1
164 , nerrnos1 = ARRAY_SIZE(errnoent1)
165 # if SUPPORTED_PERSONALITIES > 2
166 , nerrnos2 = ARRAY_SIZE(errnoent2)
172 nsignals0 = ARRAY_SIZE(signalent0)
173 #if SUPPORTED_PERSONALITIES > 1
174 , nsignals1 = ARRAY_SIZE(signalent1)
175 # if SUPPORTED_PERSONALITIES > 2
176 , nsignals2 = ARRAY_SIZE(signalent2)
182 nioctlents0 = ARRAY_SIZE(ioctlent0)
183 #if SUPPORTED_PERSONALITIES > 1
184 , nioctlents1 = ARRAY_SIZE(ioctlent1)
185 # if SUPPORTED_PERSONALITIES > 2
186 , nioctlents2 = ARRAY_SIZE(ioctlent2)
191 #if SUPPORTED_PERSONALITIES > 1
192 const struct_sysent *sysent = sysent0;
193 const char *const *errnoent = errnoent0;
194 const char *const *signalent = signalent0;
195 const struct_ioctlent *ioctlent = ioctlent0;
197 unsigned nsyscalls = nsyscalls0;
198 unsigned nerrnos = nerrnos0;
199 unsigned nsignals = nsignals0;
200 unsigned nioctlents = nioctlents0;
203 qualbits_t *qual_vec[SUPPORTED_PERSONALITIES];
205 static const unsigned nsyscall_vec[SUPPORTED_PERSONALITIES] = {
207 #if SUPPORTED_PERSONALITIES > 1
210 #if SUPPORTED_PERSONALITIES > 2
214 static const struct_sysent *const sysent_vec[SUPPORTED_PERSONALITIES] = {
216 #if SUPPORTED_PERSONALITIES > 1
219 #if SUPPORTED_PERSONALITIES > 2
225 MAX_NSYSCALLS1 = (nsyscalls0
226 #if SUPPORTED_PERSONALITIES > 1
227 > nsyscalls1 ? nsyscalls0 : nsyscalls1
230 MAX_NSYSCALLS2 = (MAX_NSYSCALLS1
231 #if SUPPORTED_PERSONALITIES > 2
232 > nsyscalls2 ? MAX_NSYSCALLS1 : nsyscalls2
235 MAX_NSYSCALLS = MAX_NSYSCALLS2,
236 /* We are ready for arches with up to 255 signals,
237 * even though the largest known signo is on MIPS and it is 128.
238 * The number of existing syscalls on all arches is
239 * larger that 255 anyway, so it is just a pedantic matter.
241 MIN_QUALS = MAX_NSYSCALLS > 255 ? MAX_NSYSCALLS : 255
244 #if SUPPORTED_PERSONALITIES > 1
245 unsigned current_personality;
247 # ifndef current_wordsize
248 unsigned current_wordsize;
249 static const int personality_wordsize[SUPPORTED_PERSONALITIES] = {
250 PERSONALITY0_WORDSIZE,
251 PERSONALITY1_WORDSIZE,
252 # if SUPPORTED_PERSONALITIES > 2
253 PERSONALITY2_WORDSIZE,
259 set_personality(int personality)
261 nsyscalls = nsyscall_vec[personality];
262 sysent = sysent_vec[personality];
264 switch (personality) {
266 errnoent = errnoent0;
268 ioctlent = ioctlent0;
269 nioctlents = nioctlents0;
270 signalent = signalent0;
271 nsignals = nsignals0;
275 errnoent = errnoent1;
277 ioctlent = ioctlent1;
278 nioctlents = nioctlents1;
279 signalent = signalent1;
280 nsignals = nsignals1;
283 # if SUPPORTED_PERSONALITIES > 2
285 errnoent = errnoent2;
287 ioctlent = ioctlent2;
288 nioctlents = nioctlents2;
289 signalent = signalent2;
290 nsignals = nsignals2;
295 current_personality = personality;
296 # ifndef current_wordsize
297 current_wordsize = personality_wordsize[personality];
302 update_personality(struct tcb *tcp, unsigned int personality)
304 if (personality == current_personality)
306 set_personality(personality);
308 if (personality == tcp->currpers)
310 tcp->currpers = personality;
312 # if defined(POWERPC64)
314 static const char *const names[] = {"64 bit", "32 bit"};
315 fprintf(stderr, "[ Process PID=%d runs in %s mode. ]\n",
316 tcp->pid, names[personality]);
318 # elif defined(X86_64)
320 static const char *const names[] = {"64 bit", "32 bit", "x32"};
321 fprintf(stderr, "[ Process PID=%d runs in %s mode. ]\n",
322 tcp->pid, names[personality]);
326 static const char *const names[] = {"x32", "32 bit"};
327 fprintf(stderr, "[ Process PID=%d runs in %s mode. ]\n",
328 tcp->pid, names[personality]);
330 # elif defined(AARCH64)
332 static const char *const names[] = {"32-bit", "AArch64"};
333 fprintf(stderr, "[ Process PID=%d runs in %s mode. ]\n",
334 tcp->pid, names[personality]);
338 static const char *const names[] = {"64-bit", "32-bit"};
339 fprintf(stderr, "[ Process PID=%d runs in %s mode. ]\n",
340 tcp->pid, names[personality]);
346 static int qual_syscall(), qual_signal(), qual_desc();
348 static const struct qual_options {
349 unsigned int bitflag;
350 const char *option_name;
351 int (*qualify)(const char *, int, int);
352 const char *argument_name;
354 { QUAL_TRACE, "trace", qual_syscall, "system call" },
355 { QUAL_TRACE, "t", qual_syscall, "system call" },
356 { QUAL_ABBREV, "abbrev", qual_syscall, "system call" },
357 { QUAL_ABBREV, "a", qual_syscall, "system call" },
358 { QUAL_VERBOSE, "verbose", qual_syscall, "system call" },
359 { QUAL_VERBOSE, "v", qual_syscall, "system call" },
360 { QUAL_RAW, "raw", qual_syscall, "system call" },
361 { QUAL_RAW, "x", qual_syscall, "system call" },
362 { QUAL_SIGNAL, "signal", qual_signal, "signal" },
363 { QUAL_SIGNAL, "signals", qual_signal, "signal" },
364 { QUAL_SIGNAL, "s", qual_signal, "signal" },
365 { QUAL_READ, "read", qual_desc, "descriptor" },
366 { QUAL_READ, "reads", qual_desc, "descriptor" },
367 { QUAL_READ, "r", qual_desc, "descriptor" },
368 { QUAL_WRITE, "write", qual_desc, "descriptor" },
369 { QUAL_WRITE, "writes", qual_desc, "descriptor" },
370 { QUAL_WRITE, "w", qual_desc, "descriptor" },
371 { 0, NULL, NULL, NULL },
375 reallocate_qual(const unsigned int n)
379 for (p = 0; p < SUPPORTED_PERSONALITIES; p++) {
380 qp = qual_vec[p] = realloc(qual_vec[p], n * sizeof(qualbits_t));
383 memset(&qp[num_quals], 0, (n - num_quals) * sizeof(qualbits_t));
389 qualify_one(const unsigned int n, unsigned int bitflag, const int not, const int pers)
394 reallocate_qual(n + 1);
396 for (p = 0; p < SUPPORTED_PERSONALITIES; p++) {
397 if (pers == p || pers < 0) {
399 qual_vec[p][n] &= ~bitflag;
401 qual_vec[p][n] |= bitflag;
407 qual_syscall(const char *s, const unsigned int bitflag, const int not)
413 if (*s >= '0' && *s <= '9') {
414 i = string_to_uint(s);
415 if (i >= MAX_NSYSCALLS)
417 qualify_one(i, bitflag, not, -1);
421 for (p = 0; p < SUPPORTED_PERSONALITIES; p++) {
422 for (i = 0; i < nsyscall_vec[p]; i++) {
423 if (sysent_vec[p][i].sys_name
424 && strcmp(s, sysent_vec[p][i].sys_name) == 0
426 qualify_one(i, bitflag, not, p);
436 qual_signal(const char *s, const unsigned int bitflag, const int not)
440 if (*s >= '0' && *s <= '9') {
441 int signo = string_to_uint(s);
442 if (signo < 0 || signo > 255)
444 qualify_one(signo, bitflag, not, -1);
447 if (strncasecmp(s, "SIG", 3) == 0)
449 for (i = 0; i <= NSIG; i++) {
450 if (strcasecmp(s, signame(i) + 3) == 0) {
451 qualify_one(i, bitflag, not, -1);
459 qual_desc(const char *s, const unsigned int bitflag, const int not)
461 if (*s >= '0' && *s <= '9') {
462 int desc = string_to_uint(s);
463 if (desc < 0 || desc > 0x7fff) /* paranoia */
465 qualify_one(desc, bitflag, not, -1);
472 lookup_class(const char *s)
474 if (strcmp(s, "file") == 0)
476 if (strcmp(s, "ipc") == 0)
478 if (strcmp(s, "network") == 0)
479 return TRACE_NETWORK;
480 if (strcmp(s, "process") == 0)
481 return TRACE_PROCESS;
482 if (strcmp(s, "signal") == 0)
484 if (strcmp(s, "desc") == 0)
486 if (strcmp(s, "memory") == 0)
492 qualify(const char *s)
494 const struct qual_options *opt;
501 reallocate_qual(MIN_QUALS);
503 opt = &qual_options[0];
504 for (i = 0; (p = qual_options[i].option_name); i++) {
505 unsigned int len = strlen(p);
506 if (strncmp(s, p, len) == 0 && s[len] == '=') {
507 opt = &qual_options[i];
517 if (strcmp(s, "none") == 0) {
521 if (strcmp(s, "all") == 0) {
522 for (i = 0; i < num_quals; i++) {
523 qualify_one(i, opt->bitflag, not, -1);
527 for (i = 0; i < num_quals; i++) {
528 qualify_one(i, opt->bitflag, !not, -1);
533 for (p = strtok(copy, ","); p; p = strtok(NULL, ",")) {
535 if (opt->bitflag == QUAL_TRACE && (n = lookup_class(p)) > 0) {
537 for (pers = 0; pers < SUPPORTED_PERSONALITIES; pers++) {
538 for (i = 0; i < nsyscall_vec[pers]; i++)
539 if (sysent_vec[pers][i].sys_flags & n)
540 qualify_one(i, opt->bitflag, not, pers);
544 if (opt->qualify(p, opt->bitflag, not)) {
545 error_msg_and_die("invalid %s '%s'",
546 opt->argument_name, p);
553 #ifdef SYS_socket_subcall
555 decode_socket_subcall(struct tcb *tcp)
558 unsigned int i, n, size;
560 if (tcp->u_arg[0] < 0 || tcp->u_arg[0] >= SYS_socket_nsubcalls)
563 tcp->scno = SYS_socket_subcall + tcp->u_arg[0];
564 tcp->qual_flg = qual_flags[tcp->scno];
565 tcp->s_ent = &sysent[tcp->scno];
566 addr = tcp->u_arg[1];
567 size = current_wordsize;
568 n = tcp->s_ent->nargs;
569 for (i = 0; i < n; ++i) {
570 if (size == sizeof(int)) {
572 if (umove(tcp, addr, &arg) < 0)
578 if (umove(tcp, addr, &arg) < 0)
587 #ifdef SYS_ipc_subcall
589 decode_ipc_subcall(struct tcb *tcp)
593 if (tcp->u_arg[0] < 0 || tcp->u_arg[0] >= SYS_ipc_nsubcalls)
596 tcp->scno = SYS_ipc_subcall + tcp->u_arg[0];
597 tcp->qual_flg = qual_flags[tcp->scno];
598 tcp->s_ent = &sysent[tcp->scno];
599 n = tcp->s_ent->nargs;
600 for (i = 0; i < n; i++)
601 tcp->u_arg[i] = tcp->u_arg[i + 1];
606 printargs(struct tcb *tcp)
610 int n = tcp->s_ent->nargs;
611 for (i = 0; i < n; i++)
612 tprintf("%s%#lx", i ? ", " : "", tcp->u_arg[i]);
618 printargs_lu(struct tcb *tcp)
622 int n = tcp->s_ent->nargs;
623 for (i = 0; i < n; i++)
624 tprintf("%s%lu", i ? ", " : "", tcp->u_arg[i]);
630 printargs_ld(struct tcb *tcp)
634 int n = tcp->s_ent->nargs;
635 for (i = 0; i < n; i++)
636 tprintf("%s%ld", i ? ", " : "", tcp->u_arg[i]);
641 #if defined(SPARC) || defined(SPARC64) || defined(IA64) || defined(SH)
643 getrval2(struct tcb *tcp)
647 # if defined(SPARC) || defined(SPARC64)
648 val = sparc_regs.u_regs[U_REG_O1];
650 if (upeek(tcp->pid, 4*(REG_REG0+1), &val) < 0)
653 if (upeek(tcp->pid, PT_R9, &val) < 0)
662 static struct user_regs_struct i386_regs;
663 long *const i386_esp_ptr = &i386_regs.esp;
664 # define ARCH_REGS_FOR_GETREGS i386_regs
665 #elif defined(X86_64) || defined(X32)
667 * On i386, pt_regs and user_regs_struct are the same,
668 * but on 64 bit x86, user_regs_struct has six more fields:
669 * fs_base, gs_base, ds, es, fs, gs.
670 * PTRACE_GETREGS fills them too, so struct pt_regs would overflow.
672 struct i386_user_regs_struct {
692 struct user_regs_struct x86_64_r;
693 struct i386_user_regs_struct i386_r;
695 # define x86_64_regs x86_regs_union.x86_64_r
696 # define i386_regs x86_regs_union.i386_r
697 uint32_t *const i386_esp_ptr = &i386_regs.esp;
698 static struct iovec x86_io = {
699 .iov_base = &x86_regs_union
701 # define ARCH_REGS_FOR_GETREGSET x86_regs_union
702 # define ARCH_IOVEC_FOR_GETREGSET x86_io
704 static bool ia64_ia32mode;
705 static long ia64_r8, ia64_r10;
706 #elif defined(POWERPC)
707 struct pt_regs ppc_regs; /* not static */
708 # define ARCH_REGS_FOR_GETREGS ppc_regs
714 struct pt_regs arm_regs; /* not static */
715 # define ARCH_REGS_FOR_GETREGS arm_regs
716 #elif defined(AARCH64)
720 # define ARM_cpsr uregs[16]
721 # define ARM_pc uregs[15]
722 # define ARM_lr uregs[14]
723 # define ARM_sp uregs[13]
724 # define ARM_ip uregs[12]
725 # define ARM_fp uregs[11]
726 # define ARM_r10 uregs[10]
727 # define ARM_r9 uregs[9]
728 # define ARM_r8 uregs[8]
729 # define ARM_r7 uregs[7]
730 # define ARM_r6 uregs[6]
731 # define ARM_r5 uregs[5]
732 # define ARM_r4 uregs[4]
733 # define ARM_r3 uregs[3]
734 # define ARM_r2 uregs[2]
735 # define ARM_r1 uregs[1]
736 # define ARM_r0 uregs[0]
737 # define ARM_ORIG_r0 uregs[17]
739 struct user_pt_regs aarch64_r;
740 struct arm_pt_regs arm_r;
742 # define aarch64_regs arm_regs_union.aarch64_r
743 # define arm_regs arm_regs_union.arm_r
744 static struct iovec aarch64_io = {
745 .iov_base = &arm_regs_union
747 # define ARCH_REGS_FOR_GETREGSET arm_regs_union
748 # define ARCH_IOVEC_FOR_GETREGSET aarch64_io
750 static long alpha_r0;
751 static long alpha_a3;
753 static struct pt_regs avr32_regs;
754 # define ARCH_REGS_FOR_GETREGS avr32_regs
755 #elif defined(SPARC) || defined(SPARC64)
756 struct pt_regs sparc_regs; /* not static */
757 # define ARCH_REGS_FOR_GETREGS sparc_regs
759 struct mips_regs mips_regs; /* not static */
760 /* PTRACE_GETREGS on MIPS is available since linux v2.6.15. */
761 # define ARCH_REGS_FOR_GETREGS mips_regs
762 #elif defined(S390) || defined(S390X)
763 static long s390_gpr2;
765 static long hppa_r28;
770 #elif defined(CRISV10) || defined(CRISV32)
771 static long cris_r10;
773 struct pt_regs tile_regs; /* not static */
774 # define ARCH_REGS_FOR_GETREGS tile_regs
775 #elif defined(MICROBLAZE)
776 static long microblaze_r3;
778 static struct user_regs_struct or1k_regs;
779 # define ARCH_REGS_FOR_GETREGSET or1k_regs
781 static struct user_gp_regs metag_regs;
782 # define ARCH_REGS_FOR_GETREGSET metag_regs
783 #elif defined(XTENSA)
784 static long xtensa_a2;
786 static struct user_regs_struct arc_regs;
787 # define ARCH_REGS_FOR_GETREGSET arc_regs
790 static long get_regs_error;
793 print_pc(struct tcb *tcp)
798 #ifdef current_wordsize
799 # define pc_wordsize current_wordsize
801 # define pc_wordsize personality_wordsize[tcp->currpers]
804 if (pc_wordsize == 4) {
809 bad = "[????????????????] ";
813 #define PRINTBADPC tprints(bad)
815 if (get_regs_error) {
821 tprintf(fmt, i386_regs.eip);
822 #elif defined(X86_64) || defined(X32)
823 if (x86_io.iov_len == sizeof(i386_regs))
824 tprintf(fmt, (unsigned long) i386_regs.eip);
826 tprintf(fmt, (unsigned long) x86_64_regs.rip);
827 #elif defined(S390) || defined(S390X)
829 if (upeek(tcp->pid, PT_PSWADDR, &psw) < 0) {
836 if (upeek(tcp->pid, PT_B0, &ip) < 0) {
841 #elif defined(POWERPC)
842 tprintf(fmt, ppc_regs.nip);
845 if (upeek(tcp->pid, 4*PT_PC, &pc) < 0) {
852 if (upeek(tcp->pid, REG_PC, &pc) < 0) {
858 tprintf(fmt, sparc_regs.pc);
859 #elif defined(SPARC64)
860 tprintf(fmt, sparc_regs.tpc);
863 if (upeek(tcp->pid, PT_IAOQ0, &pc) < 0) {
869 tprintf(fmt, (unsigned long) mips_REG_EPC);
872 if (upeek(tcp->pid, 4*REG_PC, &pc) < 0) {
879 if (upeek(tcp->pid, REG_PC, &pc) < 0) {
885 tprintf(fmt, arm_regs.ARM_pc);
887 tprintf(fmt, avr32_regs.pc);
890 if (upeek(tcp->pid, PT_PC, &pc) < 0) {
895 #elif defined(CRISV10)
897 if (upeek(tcp->pid, 4*PT_IRP, &pc) < 0) {
902 #elif defined(CRISV32)
904 if (upeek(tcp->pid, 4*PT_ERP, &pc) < 0) {
910 tprintf(fmt, (unsigned long) tile_regs.pc);
912 tprintf(fmt, or1k_regs.pc);
914 tprintf(fmt, metag_regs.pc);
915 #elif defined(XTENSA)
917 if (upeek(tcp->pid, REG_PC, &pc) < 0) {
923 tprintf(fmt, arc_regs.efa);
925 # warning print_pc is not implemented for this architecture
927 #endif /* architecture */
931 * Shuffle syscall numbers so that we don't have huge gaps in syscall table.
932 * The shuffling should be an involution: shuffle_scno(shuffle_scno(n)) == n.
934 #if defined(ARM) || defined(AARCH64) /* So far only 32-bit ARM needs this */
936 shuffle_scno(unsigned long scno)
938 if (scno < ARM_FIRST_SHUFFLED_SYSCALL)
941 /* __ARM_NR_cmpxchg? Swap with LAST_ORDINARY+1 */
942 if (scno == ARM_FIRST_SHUFFLED_SYSCALL)
944 if (scno == 0x000ffff0)
945 return ARM_FIRST_SHUFFLED_SYSCALL;
947 #define ARM_SECOND_SHUFFLED_SYSCALL (ARM_FIRST_SHUFFLED_SYSCALL + 1)
949 * Is it ARM specific syscall?
950 * Swap [0x000f0000, 0x000f0000 + LAST_SPECIAL] range
951 * with [SECOND_SHUFFLED, SECOND_SHUFFLED + LAST_SPECIAL] range.
953 if (scno >= 0x000f0000 &&
954 scno <= 0x000f0000 + ARM_LAST_SPECIAL_SYSCALL) {
955 return scno - 0x000f0000 + ARM_SECOND_SHUFFLED_SYSCALL;
957 if (scno <= ARM_SECOND_SHUFFLED_SYSCALL + ARM_LAST_SPECIAL_SYSCALL) {
958 return scno + 0x000f0000 - ARM_SECOND_SHUFFLED_SYSCALL;
964 # define shuffle_scno(scno) ((long)(scno))
968 undefined_scno_name(struct tcb *tcp)
970 static char buf[sizeof("syscall_%lu") + sizeof(long)*3];
972 sprintf(buf, "syscall_%lu", shuffle_scno(tcp->scno));
978 * PTRACE_GETREGS was added to the PowerPC kernel in v2.6.23,
979 * we provide a slow fallback for old kernels.
981 static int powerpc_getregs_old(pid_t pid)
987 r = upeek(pid, sizeof(long) * PT_NIP, (long *)&ppc_regs.nip);
991 #ifdef POWERPC64 /* else we never use it */
992 r = upeek(pid, sizeof(long) * PT_MSR, (long *)&ppc_regs.msr);
996 r = upeek(pid, sizeof(long) * PT_CCR, (long *)&ppc_regs.ccr);
999 r = upeek(pid, sizeof(long) * PT_ORIG_R3, (long *)&ppc_regs.orig_gpr3);
1002 for (i = 0; i <= 8; i++) {
1003 r = upeek(pid, sizeof(long) * (PT_R0 + i),
1004 (long *)&ppc_regs.gpr[i]);
1016 get_regs_error = -1;
1019 #if defined ARCH_REGS_FOR_GETREGSET
1021 get_regset(pid_t pid)
1023 # ifdef ARCH_IOVEC_FOR_GETREGSET
1024 /* variable iovec */
1025 ARCH_IOVEC_FOR_GETREGSET.iov_len = sizeof(ARCH_REGS_FOR_GETREGSET);
1026 return ptrace(PTRACE_GETREGSET, pid, NT_PRSTATUS,
1027 &ARCH_IOVEC_FOR_GETREGSET);
1029 /* constant iovec */
1030 static struct iovec io = {
1031 .iov_base = &ARCH_REGS_FOR_GETREGSET,
1032 .iov_len = sizeof(ARCH_REGS_FOR_GETREGSET)
1034 return ptrace(PTRACE_GETREGSET, pid, NT_PRSTATUS, &io);
1038 #endif /* ARCH_REGS_FOR_GETREGSET */
1043 #ifdef ARCH_REGS_FOR_GETREGSET
1045 /* Try PTRACE_GETREGSET first, fallback to PTRACE_GETREGS. */
1046 static int getregset_support;
1048 if (getregset_support >= 0) {
1049 get_regs_error = get_regset(pid);
1050 if (getregset_support > 0)
1052 if (get_regs_error >= 0) {
1053 getregset_support = 1;
1056 if (errno == EPERM || errno == ESRCH)
1058 getregset_support = -1;
1060 /* Use old method, with unreliable heuristical detection of 32-bitness. */
1061 x86_io.iov_len = sizeof(x86_64_regs);
1062 get_regs_error = ptrace(PTRACE_GETREGS, pid, NULL, &x86_64_regs);
1063 if (!get_regs_error && x86_64_regs.cs == 0x23) {
1064 x86_io.iov_len = sizeof(i386_regs);
1066 * The order is important: i386_regs and x86_64_regs
1067 * are overlaid in memory!
1069 i386_regs.ebx = x86_64_regs.rbx;
1070 i386_regs.ecx = x86_64_regs.rcx;
1071 i386_regs.edx = x86_64_regs.rdx;
1072 i386_regs.esi = x86_64_regs.rsi;
1073 i386_regs.edi = x86_64_regs.rdi;
1074 i386_regs.ebp = x86_64_regs.rbp;
1075 i386_regs.eax = x86_64_regs.rax;
1076 /* i386_regs.xds = x86_64_regs.ds; unused by strace */
1077 /* i386_regs.xes = x86_64_regs.es; ditto... */
1078 /* i386_regs.xfs = x86_64_regs.fs; */
1079 /* i386_regs.xgs = x86_64_regs.gs; */
1080 i386_regs.orig_eax = x86_64_regs.orig_rax;
1081 i386_regs.eip = x86_64_regs.rip;
1082 /* i386_regs.xcs = x86_64_regs.cs; */
1083 /* i386_regs.eflags = x86_64_regs.eflags; */
1084 i386_regs.esp = x86_64_regs.rsp;
1085 /* i386_regs.xss = x86_64_regs.ss; */
1087 # else /* !X86_64 */
1088 /* Assume that PTRACE_GETREGSET works. */
1089 get_regs_error = get_regset(pid);
1091 #elif defined ARCH_REGS_FOR_GETREGS
1092 # if defined SPARC || defined SPARC64
1093 /* SPARC systems have the meaning of data and addr reversed */
1094 get_regs_error = ptrace(PTRACE_GETREGS, pid, (char *)&ARCH_REGS_FOR_GETREGS, 0);
1095 # elif defined POWERPC
1096 static bool old_kernel = 0;
1099 get_regs_error = ptrace(PTRACE_GETREGS, pid, NULL, &ARCH_REGS_FOR_GETREGS);
1100 if (get_regs_error && errno == EIO) {
1103 get_regs_error = powerpc_getregs_old(pid);
1106 /* Assume that PTRACE_GETREGS works. */
1107 get_regs_error = ptrace(PTRACE_GETREGS, pid, NULL, &ARCH_REGS_FOR_GETREGS);
1110 #else /* !ARCH_REGS_FOR_GETREGSET && !ARCH_REGS_FOR_GETREGS */
1111 # warning get_regs is not implemented for this architecture yet
1117 * 0: "ignore this ptrace stop", bail out of trace_syscall_entering() silently.
1118 * 1: ok, continue in trace_syscall_entering().
1119 * other: error, trace_syscall_entering() should print error indicator
1120 * ("????" etc) and bail out.
1123 get_scno(struct tcb *tcp)
1127 #if defined(S390) || defined(S390X)
1128 if (upeek(tcp->pid, PT_GPR2, &s390_gpr2) < 0)
1131 if (s390_gpr2 != -ENOSYS) {
1133 * Since kernel version 2.5.44 the scno gets passed in gpr2.
1138 * Old style of "passing" the scno via the SVC instruction.
1141 long opcode, offset_reg, tmp;
1143 static const int gpr_offset[16] = {
1144 PT_GPR0, PT_GPR1, PT_ORIGGPR2, PT_GPR3,
1145 PT_GPR4, PT_GPR5, PT_GPR6, PT_GPR7,
1146 PT_GPR8, PT_GPR9, PT_GPR10, PT_GPR11,
1147 PT_GPR12, PT_GPR13, PT_GPR14, PT_GPR15
1150 if (upeek(tcp->pid, PT_PSWADDR, &psw) < 0)
1153 opcode = ptrace(PTRACE_PEEKTEXT, tcp->pid, (char *)(psw - sizeof(long)), 0);
1155 perror_msg("peektext(psw-oneword)");
1160 * We have to check if the SVC got executed directly or via an
1161 * EXECUTE instruction. In case of EXECUTE it is necessary to do
1162 * instruction decoding to derive the system call number.
1163 * Unfortunately the opcode sizes of EXECUTE and SVC are differently,
1164 * so that this doesn't work if a SVC opcode is part of an EXECUTE
1165 * opcode. Since there is no way to find out the opcode size this
1166 * is the best we can do...
1168 if ((opcode & 0xff00) == 0x0a00) {
1170 scno = opcode & 0xff;
1173 /* SVC got executed by EXECUTE instruction */
1176 * Do instruction decoding of EXECUTE. If you really want to
1177 * understand this, read the Principles of Operations.
1179 svc_addr = (void *) (opcode & 0xfff);
1182 offset_reg = (opcode & 0x000f0000) >> 16;
1183 if (offset_reg && (upeek(tcp->pid, gpr_offset[offset_reg], &tmp) < 0))
1188 offset_reg = (opcode & 0x0000f000) >> 12;
1189 if (offset_reg && (upeek(tcp->pid, gpr_offset[offset_reg], &tmp) < 0))
1193 scno = ptrace(PTRACE_PEEKTEXT, tcp->pid, svc_addr, 0);
1202 offset_reg = (opcode & 0x00f00000) >> 20;
1203 if (offset_reg && (upeek(tcp->pid, gpr_offset[offset_reg], &tmp) < 0))
1206 scno = (scno | tmp) & 0xff;
1209 #elif defined(POWERPC)
1210 scno = ppc_regs.gpr[0];
1212 unsigned int currpers;
1215 * Check for 64/32 bit mode.
1216 * Embedded implementations covered by Book E extension of PPC use
1217 * bit 0 (CM) of 32-bit Machine state register (MSR).
1218 * Other implementations use bit 0 (SF) of 64-bit MSR.
1220 currpers = (ppc_regs.msr & 0x8000000080000000) ? 0 : 1;
1221 update_personality(tcp, currpers);
1223 #elif defined(AVR32)
1224 scno = avr32_regs.r8;
1226 if (upeek(tcp->pid, PT_ORIG_P0, &scno))
1229 scno = i386_regs.orig_eax;
1230 #elif defined(X86_64) || defined(X32)
1231 # ifndef __X32_SYSCALL_BIT
1232 # define __X32_SYSCALL_BIT 0x40000000
1234 unsigned int currpers;
1236 /* GETREGSET of NT_PRSTATUS tells us regset size,
1237 * which unambiguously detects i386.
1239 * Linux kernel distinguishes x86-64 and x32 processes
1240 * solely by looking at __X32_SYSCALL_BIT:
1241 * arch/x86/include/asm/compat.h::is_x32_task():
1242 * if (task_pt_regs(current)->orig_ax & __X32_SYSCALL_BIT)
1245 if (x86_io.iov_len == sizeof(i386_regs)) {
1246 scno = i386_regs.orig_eax;
1249 scno = x86_64_regs.orig_rax;
1251 if (scno & __X32_SYSCALL_BIT) {
1253 * Syscall number -1 requires special treatment:
1254 * it might be a side effect of SECCOMP_RET_ERRNO
1255 * filtering that sets orig_rax to -1
1256 * in some versions of linux kernel.
1257 * If that is the case, then
1258 * __X32_SYSCALL_BIT logic does not apply.
1260 if ((long long) x86_64_regs.orig_rax != -1) {
1261 scno -= __X32_SYSCALL_BIT;
1271 /* cs = 0x33 for long mode (native 64 bit and x32)
1272 * cs = 0x23 for compatibility mode (32 bit)
1273 * ds = 0x2b for x32 mode (x86-64 in 32 bit)
1275 scno = x86_64_regs.orig_rax;
1276 switch (x86_64_regs.cs) {
1277 case 0x23: currpers = 1; break;
1279 if (x86_64_regs.ds == 0x2b) {
1281 scno &= ~__X32_SYSCALL_BIT;
1286 fprintf(stderr, "Unknown value CS=0x%08X while "
1287 "detecting personality of process "
1288 "PID=%d\n", (int)x86_64_regs.cs, tcp->pid);
1289 currpers = current_personality;
1293 /* This version analyzes the opcode of a syscall instruction.
1294 * (int 0x80 on i386 vs. syscall on x86-64)
1295 * It works, but is too complicated, and strictly speaking, unreliable.
1297 unsigned long call, rip = x86_64_regs.rip;
1298 /* sizeof(syscall) == sizeof(int 0x80) == 2 */
1301 call = ptrace(PTRACE_PEEKTEXT, tcp->pid, (char *)rip, (char *)0);
1303 fprintf(stderr, "ptrace_peektext failed: %s\n",
1305 switch (call & 0xffff) {
1306 /* x86-64: syscall = 0x0f 0x05 */
1307 case 0x050f: currpers = 0; break;
1308 /* i386: int 0x80 = 0xcd 0x80 */
1309 case 0x80cd: currpers = 1; break;
1311 currpers = current_personality;
1313 "Unknown syscall opcode (0x%04X) while "
1314 "detecting personality of process "
1315 "PID=%d\n", (int)call, tcp->pid);
1321 /* If we are built for a x32 system, then personality 0 is x32
1322 * (not x86_64), and stracing of x86_64 apps is not supported.
1323 * Stracing of i386 apps is still supported.
1325 if (currpers == 0) {
1326 fprintf(stderr, "syscall_%lu(...) in unsupported "
1327 "64-bit mode of process PID=%d\n",
1331 currpers &= ~2; /* map 2,1 to 0,1 */
1333 update_personality(tcp, currpers);
1335 # define IA64_PSR_IS ((long)1 << 34)
1337 if (upeek(tcp->pid, PT_CR_IPSR, &psr) >= 0)
1338 ia64_ia32mode = ((psr & IA64_PSR_IS) != 0);
1339 if (ia64_ia32mode) {
1340 if (upeek(tcp->pid, PT_R1, &scno) < 0)
1343 if (upeek(tcp->pid, PT_R15, &scno) < 0)
1346 #elif defined(AARCH64)
1347 switch (aarch64_io.iov_len) {
1348 case sizeof(aarch64_regs):
1349 /* We are in 64-bit mode */
1350 scno = aarch64_regs.regs[8];
1351 update_personality(tcp, 1);
1353 case sizeof(arm_regs):
1354 /* We are in 32-bit mode */
1355 /* Note: we don't support OABI, unlike 32-bit ARM build */
1356 scno = arm_regs.ARM_r7;
1357 scno = shuffle_scno(scno);
1358 update_personality(tcp, 0);
1362 if (arm_regs.ARM_ip != 0) {
1363 /* It is not a syscall entry */
1364 fprintf(stderr, "pid %d stray syscall exit\n", tcp->pid);
1365 tcp->flags |= TCB_INSYSCALL;
1368 /* Note: we support only 32-bit CPUs, not 26-bit */
1370 # if !defined(__ARM_EABI__) || ENABLE_ARM_OABI
1371 if (arm_regs.ARM_cpsr & 0x20)
1375 /* Check EABI/OABI by examining SVC insn's low 24 bits */
1377 scno = ptrace(PTRACE_PEEKTEXT, tcp->pid, (void *)(arm_regs.ARM_pc - 4), NULL);
1380 /* EABI syscall convention? */
1381 if ((unsigned long) scno != 0xef000000) {
1383 if ((scno & 0x0ff00000) != 0x0f900000) {
1384 fprintf(stderr, "pid %d unknown syscall trap 0x%08lx\n",
1388 /* Fixup the syscall number */
1392 scno = arm_regs.ARM_r7;
1394 # else /* __ARM_EABI__ || !ENABLE_ARM_OABI */
1395 scno = arm_regs.ARM_r7;
1397 scno = shuffle_scno(scno);
1399 if (upeek(tcp->pid, 4*PT_ORIG_D0, &scno) < 0)
1404 if (!SCNO_IN_RANGE(scno)) {
1405 if (mips_REG_A3 == 0 || mips_REG_A3 == -1) {
1407 fprintf(stderr, "stray syscall exit: v0 = %ld\n", scno);
1411 #elif defined(ALPHA)
1412 if (upeek(tcp->pid, REG_A3, &alpha_a3) < 0)
1414 if (upeek(tcp->pid, REG_R0, &scno) < 0)
1418 * Do some sanity checks to figure out if it's
1419 * really a syscall entry
1421 if (!SCNO_IN_RANGE(scno)) {
1422 if (alpha_a3 == 0 || alpha_a3 == -1) {
1424 fprintf(stderr, "stray syscall exit: r0 = %ld\n", scno);
1428 #elif defined(SPARC) || defined(SPARC64)
1429 /* Disassemble the syscall trap. */
1430 /* Retrieve the syscall trap instruction. */
1433 # if defined(SPARC64)
1434 trap = ptrace(PTRACE_PEEKTEXT, tcp->pid, (char *)sparc_regs.tpc, 0);
1437 trap = ptrace(PTRACE_PEEKTEXT, tcp->pid, (char *)sparc_regs.pc, 0);
1442 /* Disassemble the trap to see what personality to use. */
1445 /* Linux/SPARC syscall trap. */
1446 update_personality(tcp, 0);
1449 /* Linux/SPARC64 syscall trap. */
1450 update_personality(tcp, 2);
1453 /* SunOS syscall trap. (pers 1) */
1454 fprintf(stderr, "syscall: SunOS no support\n");
1457 /* Solaris 2.x syscall trap. (per 2) */
1458 update_personality(tcp, 1);
1461 /* NetBSD/FreeBSD syscall trap. */
1462 fprintf(stderr, "syscall: NetBSD/FreeBSD not supported\n");
1465 /* Solaris 2.x gettimeofday */
1466 update_personality(tcp, 1);
1469 # if defined(SPARC64)
1470 fprintf(stderr, "syscall: unknown syscall trap %08lx %016lx\n", trap, sparc_regs.tpc);
1472 fprintf(stderr, "syscall: unknown syscall trap %08lx %08lx\n", trap, sparc_regs.pc);
1477 /* Extract the system call number from the registers. */
1478 if (trap == 0x91d02027)
1481 scno = sparc_regs.u_regs[U_REG_G1];
1483 scno = sparc_regs.u_regs[U_REG_O0];
1484 memmove(&sparc_regs.u_regs[U_REG_O0], &sparc_regs.u_regs[U_REG_O1], 7*sizeof(sparc_regs.u_regs[0]));
1487 if (upeek(tcp->pid, PT_GR20, &scno) < 0)
1491 * In the new syscall ABI, the system call number is in R3.
1493 if (upeek(tcp->pid, 4*(REG_REG0+3), &scno) < 0)
1497 /* Odd as it may seem, a glibc bug has been known to cause
1498 glibc to issue bogus negative syscall numbers. So for
1499 our purposes, make strace print what it *should* have been */
1500 long correct_scno = (scno & 0xff);
1503 "Detected glibc bug: bogus system call"
1504 " number = %ld, correcting to %ld\n",
1507 scno = correct_scno;
1510 if (upeek(tcp->pid, REG_SYSCALL, &scno) < 0)
1513 #elif defined(CRISV10) || defined(CRISV32)
1514 if (upeek(tcp->pid, 4*PT_R9, &scno) < 0)
1517 unsigned int currpers;
1518 scno = tile_regs.regs[10];
1522 # ifndef PT_FLAGS_COMPAT
1523 # define PT_FLAGS_COMPAT 0x10000 /* from Linux 3.8 on */
1525 if (tile_regs.flags & PT_FLAGS_COMPAT)
1530 update_personality(tcp, currpers);
1531 #elif defined(MICROBLAZE)
1532 if (upeek(tcp->pid, 0, &scno) < 0)
1535 scno = or1k_regs.gpr[11];
1536 #elif defined(METAG)
1537 scno = metag_regs.dx[0][1]; /* syscall number in D1Re0 (D1.0) */
1538 #elif defined(XTENSA)
1539 if (upeek(tcp->pid, SYSCALL_NR, &scno) < 0)
1542 scno = arc_regs.scratch.r8;
1546 if (SCNO_IS_VALID(tcp->scno)) {
1547 tcp->s_ent = &sysent[scno];
1548 tcp->qual_flg = qual_flags[scno];
1550 static const struct_sysent unknown = {
1553 .sys_func = printargs,
1554 .sys_name = "unknown", /* not used */
1556 tcp->s_ent = &unknown;
1557 tcp->qual_flg = UNDEFINED_SCNO | QUAL_RAW | DEFAULT_QUAL_FLAGS;
1563 * Cannot rely on __kernel_[u]long_t being defined,
1564 * it is quite a recent feature of <asm/posix_types.h>.
1566 #ifdef __kernel_long_t
1567 typedef __kernel_long_t kernel_long_t;
1568 typedef __kernel_ulong_t kernel_ulong_t;
1571 typedef long long kernel_long_t;
1572 typedef unsigned long long kernel_ulong_t;
1574 typedef long kernel_long_t;
1575 typedef unsigned long kernel_ulong_t;
1580 * Check the syscall return value register value for whether it is
1581 * a negated errno code indicating an error, or a success return value.
1584 is_negated_errno(kernel_ulong_t val)
1586 /* Linux kernel defines MAX_ERRNO to 4095. */
1587 kernel_ulong_t max = -(kernel_long_t) 4095;
1589 #if SUPPORTED_PERSONALITIES > 1 && SIZEOF_LONG > 4
1590 if (current_wordsize < sizeof(val)) {
1591 val = (uint32_t) val;
1592 max = (uint32_t) max;
1596 * current_wordsize is 4 even in personality 0 (native X32)
1597 * but truncation _must not_ be done in it.
1598 * can't check current_wordsize here!
1600 if (current_personality != 0) {
1601 val = (uint32_t) val;
1602 max = (uint32_t) max;
1609 /* Return -1 on error or 1 on success (never 0!) */
1611 get_syscall_args(struct tcb *tcp)
1615 nargs = tcp->s_ent->nargs;
1617 #if defined(S390) || defined(S390X)
1618 for (i = 0; i < nargs; ++i)
1619 if (upeek(tcp->pid, i==0 ? PT_ORIGGPR2 : PT_GPR2 + i*sizeof(long), &tcp->u_arg[i]) < 0)
1621 #elif defined(ALPHA)
1622 for (i = 0; i < nargs; ++i)
1623 if (upeek(tcp->pid, REG_A0+i, &tcp->u_arg[i]) < 0)
1626 if (!ia64_ia32mode) {
1627 unsigned long *out0, cfm, sof, sol;
1629 /* be backwards compatible with kernel < 2.4.4... */
1631 # define PT_RBS_END PT_AR_BSP
1634 if (upeek(tcp->pid, PT_RBS_END, &rbs_end) < 0)
1636 if (upeek(tcp->pid, PT_CFM, (long *) &cfm) < 0)
1639 sof = (cfm >> 0) & 0x7f;
1640 sol = (cfm >> 7) & 0x7f;
1641 out0 = ia64_rse_skip_regs((unsigned long *) rbs_end, -sof + sol);
1643 for (i = 0; i < nargs; ++i) {
1644 if (umoven(tcp, (unsigned long) ia64_rse_skip_regs(out0, i),
1645 sizeof(long), (char *) &tcp->u_arg[i]) < 0)
1649 static const int argreg[MAX_ARGS] = { PT_R11 /* EBX = out0 */,
1650 PT_R9 /* ECX = out1 */,
1651 PT_R10 /* EDX = out2 */,
1652 PT_R14 /* ESI = out3 */,
1653 PT_R15 /* EDI = out4 */,
1654 PT_R13 /* EBP = out5 */};
1656 for (i = 0; i < nargs; ++i) {
1657 if (upeek(tcp->pid, argreg[i], &tcp->u_arg[i]) < 0)
1659 /* truncate away IVE sign-extension */
1660 tcp->u_arg[i] &= 0xffffffff;
1663 #elif defined LINUX_MIPSN64
1666 tcp->u_arg[0] = mips_REG_A0;
1667 tcp->u_arg[1] = mips_REG_A1;
1668 tcp->u_arg[2] = mips_REG_A2;
1669 tcp->u_arg[3] = mips_REG_A3;
1670 tcp->u_arg[4] = mips_REG_A4;
1671 tcp->u_arg[5] = mips_REG_A5;
1672 #elif defined LINUX_MIPSN32
1675 tcp->u_arg[0] = tcp->ext_arg[0] = mips_REG_A0;
1676 tcp->u_arg[1] = tcp->ext_arg[1] = mips_REG_A1;
1677 tcp->u_arg[2] = tcp->ext_arg[2] = mips_REG_A2;
1678 tcp->u_arg[3] = tcp->ext_arg[3] = mips_REG_A3;
1679 tcp->u_arg[4] = tcp->ext_arg[4] = mips_REG_A4;
1680 tcp->u_arg[5] = tcp->ext_arg[5] = mips_REG_A5;
1681 #elif defined LINUX_MIPSO32
1684 tcp->u_arg[0] = mips_REG_A0;
1685 tcp->u_arg[1] = mips_REG_A1;
1686 tcp->u_arg[2] = mips_REG_A2;
1687 tcp->u_arg[3] = mips_REG_A3;
1689 umoven(tcp, mips_REG_SP + 4 * 4,
1690 (nargs - 4) * sizeof(tcp->u_arg[0]),
1691 (char *)(tcp->u_arg + 4));
1693 #elif defined(POWERPC)
1696 tcp->u_arg[0] = ppc_regs.orig_gpr3;
1697 tcp->u_arg[1] = ppc_regs.gpr[4];
1698 tcp->u_arg[2] = ppc_regs.gpr[5];
1699 tcp->u_arg[3] = ppc_regs.gpr[6];
1700 tcp->u_arg[4] = ppc_regs.gpr[7];
1701 tcp->u_arg[5] = ppc_regs.gpr[8];
1702 #elif defined(SPARC) || defined(SPARC64)
1703 for (i = 0; i < nargs; ++i)
1704 tcp->u_arg[i] = sparc_regs.u_regs[U_REG_O0 + i];
1706 for (i = 0; i < nargs; ++i)
1707 if (upeek(tcp->pid, PT_GR26-4*i, &tcp->u_arg[i]) < 0)
1709 #elif defined(ARM) || defined(AARCH64)
1710 # if defined(AARCH64)
1711 if (tcp->currpers == 1)
1712 for (i = 0; i < nargs; ++i)
1713 tcp->u_arg[i] = aarch64_regs.regs[i];
1716 for (i = 0; i < nargs; ++i)
1717 tcp->u_arg[i] = arm_regs.uregs[i];
1718 #elif defined(AVR32)
1721 tcp->u_arg[0] = avr32_regs.r12;
1722 tcp->u_arg[1] = avr32_regs.r11;
1723 tcp->u_arg[2] = avr32_regs.r10;
1724 tcp->u_arg[3] = avr32_regs.r9;
1725 tcp->u_arg[4] = avr32_regs.r5;
1726 tcp->u_arg[5] = avr32_regs.r3;
1728 static const int argreg[MAX_ARGS] = { PT_R0, PT_R1, PT_R2, PT_R3, PT_R4, PT_R5 };
1730 for (i = 0; i < nargs; ++i)
1731 if (upeek(tcp->pid, argreg[i], &tcp->u_arg[i]) < 0)
1734 static const int syscall_regs[MAX_ARGS] = {
1735 4 * (REG_REG0+4), 4 * (REG_REG0+5), 4 * (REG_REG0+6),
1736 4 * (REG_REG0+7), 4 * (REG_REG0 ), 4 * (REG_REG0+1)
1739 for (i = 0; i < nargs; ++i)
1740 if (upeek(tcp->pid, syscall_regs[i], &tcp->u_arg[i]) < 0)
1744 /* Registers used by SH5 Linux system calls for parameters */
1745 static const int syscall_regs[MAX_ARGS] = { 2, 3, 4, 5, 6, 7 };
1747 for (i = 0; i < nargs; ++i)
1748 if (upeek(tcp->pid, REG_GENERAL(syscall_regs[i]), &tcp->u_arg[i]) < 0)
1753 tcp->u_arg[0] = i386_regs.ebx;
1754 tcp->u_arg[1] = i386_regs.ecx;
1755 tcp->u_arg[2] = i386_regs.edx;
1756 tcp->u_arg[3] = i386_regs.esi;
1757 tcp->u_arg[4] = i386_regs.edi;
1758 tcp->u_arg[5] = i386_regs.ebp;
1759 #elif defined(X86_64) || defined(X32)
1762 if (x86_io.iov_len != sizeof(i386_regs)) {
1763 /* x86-64 or x32 ABI */
1764 tcp->u_arg[0] = x86_64_regs.rdi;
1765 tcp->u_arg[1] = x86_64_regs.rsi;
1766 tcp->u_arg[2] = x86_64_regs.rdx;
1767 tcp->u_arg[3] = x86_64_regs.r10;
1768 tcp->u_arg[4] = x86_64_regs.r8;
1769 tcp->u_arg[5] = x86_64_regs.r9;
1771 tcp->ext_arg[0] = x86_64_regs.rdi;
1772 tcp->ext_arg[1] = x86_64_regs.rsi;
1773 tcp->ext_arg[2] = x86_64_regs.rdx;
1774 tcp->ext_arg[3] = x86_64_regs.r10;
1775 tcp->ext_arg[4] = x86_64_regs.r8;
1776 tcp->ext_arg[5] = x86_64_regs.r9;
1780 /* Zero-extend from 32 bits */
1781 /* Use widen_to_long(tcp->u_arg[N]) in syscall handlers
1782 * if you need to use *sign-extended* parameter.
1784 tcp->u_arg[0] = (long)(uint32_t)i386_regs.ebx;
1785 tcp->u_arg[1] = (long)(uint32_t)i386_regs.ecx;
1786 tcp->u_arg[2] = (long)(uint32_t)i386_regs.edx;
1787 tcp->u_arg[3] = (long)(uint32_t)i386_regs.esi;
1788 tcp->u_arg[4] = (long)(uint32_t)i386_regs.edi;
1789 tcp->u_arg[5] = (long)(uint32_t)i386_regs.ebp;
1791 #elif defined(MICROBLAZE)
1792 for (i = 0; i < nargs; ++i)
1793 if (upeek(tcp->pid, (5 + i) * 4, &tcp->u_arg[i]) < 0)
1795 #elif defined(CRISV10) || defined(CRISV32)
1796 static const int crisregs[MAX_ARGS] = {
1797 4*PT_ORIG_R10, 4*PT_R11, 4*PT_R12,
1798 4*PT_R13 , 4*PT_MOF, 4*PT_SRP
1801 for (i = 0; i < nargs; ++i)
1802 if (upeek(tcp->pid, crisregs[i], &tcp->u_arg[i]) < 0)
1805 for (i = 0; i < nargs; ++i)
1806 tcp->u_arg[i] = tile_regs.regs[i];
1808 for (i = 0; i < nargs; ++i)
1809 if (upeek(tcp->pid, (i < 5 ? i : i + 2)*4, &tcp->u_arg[i]) < 0)
1813 for (i = 0; i < 6; ++i)
1814 tcp->u_arg[i] = or1k_regs.gpr[3 + i];
1815 #elif defined(METAG)
1816 for (i = 0; i < nargs; i++)
1817 /* arguments go backwards from D1Ar1 (D1.3) */
1818 tcp->u_arg[i] = ((unsigned long *)&metag_regs.dx[3][1])[-i];
1819 #elif defined(XTENSA)
1820 /* arg0: a6, arg1: a3, arg2: a4, arg3: a5, arg4: a8, arg5: a9 */
1821 static const int xtensaregs[MAX_ARGS] = { 6, 3, 4, 5, 8, 9 };
1822 for (i = 0; i < nargs; ++i)
1823 if (upeek(tcp->pid, REG_A_BASE + xtensaregs[i], &tcp->u_arg[i]) < 0)
1826 long *arc_args = &arc_regs.scratch.r0;
1827 for (i = 0; i < nargs; ++i)
1828 tcp->u_arg[i] = *arc_args--;
1830 #else /* Other architecture (32bits specific) */
1831 for (i = 0; i < nargs; ++i)
1832 if (upeek(tcp->pid, i*4, &tcp->u_arg[i]) < 0)
1839 trace_syscall_entering(struct tcb *tcp)
1843 scno_good = res = (get_regs_error ? -1 : get_scno(tcp));
1847 res = get_syscall_args(tcp);
1852 tprints("????" /* anti-trigraph gap */ "(");
1853 else if (tcp->qual_flg & UNDEFINED_SCNO)
1854 tprintf("%s(", undefined_scno_name(tcp));
1856 tprintf("%s(", tcp->s_ent->sys_name);
1858 * " <unavailable>" will be added later by the code which
1859 * detects ptrace errors.
1864 if ( sys_execve == tcp->s_ent->sys_func
1865 # if defined(SPARC) || defined(SPARC64)
1866 || sys_execv == tcp->s_ent->sys_func
1869 hide_log_until_execve = 0;
1872 #if defined(SYS_socket_subcall) || defined(SYS_ipc_subcall)
1874 # ifdef SYS_socket_subcall
1875 if (tcp->s_ent->sys_func == sys_socketcall) {
1876 decode_socket_subcall(tcp);
1880 # ifdef SYS_ipc_subcall
1881 if (tcp->s_ent->sys_func == sys_ipc) {
1882 decode_ipc_subcall(tcp);
1890 if (!(tcp->qual_flg & QUAL_TRACE)
1891 || (tracing_paths && !pathtrace_match(tcp))
1893 tcp->flags |= TCB_INSYSCALL | TCB_FILTERED;
1897 tcp->flags &= ~TCB_FILTERED;
1899 if (cflag == CFLAG_ONLY_STATS || hide_log_until_execve) {
1904 #ifdef USE_LIBUNWIND
1905 if (stack_trace_enabled) {
1906 if (tcp->s_ent->sys_flags & STACKTRACE_CAPTURE_ON_ENTER)
1907 unwind_capture_stacktrace(tcp);
1912 if (tcp->qual_flg & UNDEFINED_SCNO)
1913 tprintf("%s(", undefined_scno_name(tcp));
1915 tprintf("%s(", tcp->s_ent->sys_name);
1916 if ((tcp->qual_flg & QUAL_RAW) && tcp->s_ent->sys_func != sys_exit)
1917 res = printargs(tcp);
1919 res = tcp->s_ent->sys_func(tcp);
1923 tcp->flags |= TCB_INSYSCALL;
1924 /* Measure the entrance time as late as possible to avoid errors. */
1926 gettimeofday(&tcp->etime, NULL);
1931 * 1: ok, continue in trace_syscall_exiting().
1932 * -1: error, trace_syscall_exiting() should print error indicator
1933 * ("????" etc) and bail out.
1936 get_syscall_result(struct tcb *tcp)
1938 #if defined ARCH_REGS_FOR_GETREGSET || defined ARCH_REGS_FOR_GETREGS
1939 /* already done by get_regs */
1940 #elif defined(S390) || defined(S390X)
1941 if (upeek(tcp->pid, PT_GPR2, &s390_gpr2) < 0)
1944 if (upeek(tcp->pid, PT_R0, &bfin_r0) < 0)
1947 # define IA64_PSR_IS ((long)1 << 34)
1949 if (upeek(tcp->pid, PT_CR_IPSR, &psr) >= 0)
1950 ia64_ia32mode = ((psr & IA64_PSR_IS) != 0);
1951 if (upeek(tcp->pid, PT_R8, &ia64_r8) < 0)
1953 if (upeek(tcp->pid, PT_R10, &ia64_r10) < 0)
1956 if (upeek(tcp->pid, 4*PT_D0, &m68k_d0) < 0)
1958 #elif defined(ALPHA)
1959 if (upeek(tcp->pid, REG_A3, &alpha_a3) < 0)
1961 if (upeek(tcp->pid, REG_R0, &alpha_r0) < 0)
1964 if (upeek(tcp->pid, PT_GR28, &hppa_r28) < 0)
1967 /* new syscall ABI returns result in R0 */
1968 if (upeek(tcp->pid, 4*REG_REG0, (long *)&sh_r0) < 0)
1971 /* ABI defines result returned in r9 */
1972 if (upeek(tcp->pid, REG_GENERAL(9), (long *)&sh64_r9) < 0)
1974 #elif defined(CRISV10) || defined(CRISV32)
1975 if (upeek(tcp->pid, 4*PT_R10, &cris_r10) < 0)
1977 #elif defined(MICROBLAZE)
1978 if (upeek(tcp->pid, 3 * 4, µblaze_r3) < 0)
1980 #elif defined(XTENSA)
1981 if (upeek(tcp->pid, REG_A_BASE + 2, &xtensa_a2) < 0)
1984 # error get_syscall_result is not implemented for this architecture
1990 * 1: ok, continue in trace_syscall_exiting().
1991 * -1: error, trace_syscall_exiting() should print error indicator
1992 * ("????" etc) and bail out.
1995 get_error(struct tcb *tcp)
1998 int check_errno = 1;
1999 if (tcp->s_ent->sys_flags & SYSCALL_NEVER_FAILS) {
2002 #if defined(S390) || defined(S390X)
2003 if (check_errno && is_negated_errno(s390_gpr2)) {
2005 u_error = -s390_gpr2;
2008 tcp->u_rval = s390_gpr2;
2011 if (check_errno && is_negated_errno(i386_regs.eax)) {
2013 u_error = -i386_regs.eax;
2016 tcp->u_rval = i386_regs.eax;
2018 #elif defined(X86_64) || defined(X32)
2020 * In X32, return value is 64-bit (llseek uses one).
2021 * Using merely "long rax" would not work.
2025 if (x86_io.iov_len == sizeof(i386_regs)) {
2026 /* Sign extend from 32 bits */
2027 rax = (int32_t) i386_regs.eax;
2029 rax = x86_64_regs.rax;
2031 if (check_errno && is_negated_errno(rax)) {
2038 /* tcp->u_rval contains a truncated value */
2043 if (ia64_ia32mode) {
2047 if (check_errno && is_negated_errno(err)) {
2055 if (check_errno && ia64_r10) {
2059 tcp->u_rval = ia64_r8;
2063 if (check_errno && mips_REG_A3) {
2065 u_error = mips_REG_V0;
2067 # if defined LINUX_MIPSN32
2068 tcp->u_lrval = mips_REG_V0;
2070 tcp->u_rval = mips_REG_V0;
2072 #elif defined(POWERPC)
2073 if (check_errno && (ppc_regs.ccr & 0x10000000)) {
2075 u_error = ppc_regs.gpr[3];
2078 tcp->u_rval = ppc_regs.gpr[3];
2081 if (check_errno && is_negated_errno(m68k_d0)) {
2086 tcp->u_rval = m68k_d0;
2088 #elif defined(ARM) || defined(AARCH64)
2089 # if defined(AARCH64)
2090 if (tcp->currpers == 1) {
2091 if (check_errno && is_negated_errno(aarch64_regs.regs[0])) {
2093 u_error = -aarch64_regs.regs[0];
2096 tcp->u_rval = aarch64_regs.regs[0];
2102 if (check_errno && is_negated_errno(arm_regs.ARM_r0)) {
2104 u_error = -arm_regs.ARM_r0;
2107 tcp->u_rval = arm_regs.ARM_r0;
2110 #elif defined(AVR32)
2111 if (check_errno && avr32_regs.r12 && (unsigned) -avr32_regs.r12 < nerrnos) {
2113 u_error = -avr32_regs.r12;
2116 tcp->u_rval = avr32_regs.r12;
2119 if (check_errno && is_negated_errno(bfin_r0)) {
2123 tcp->u_rval = bfin_r0;
2125 #elif defined(ALPHA)
2126 if (check_errno && alpha_a3) {
2131 tcp->u_rval = alpha_r0;
2133 #elif defined(SPARC)
2134 if (check_errno && sparc_regs.psr & PSR_C) {
2136 u_error = sparc_regs.u_regs[U_REG_O0];
2139 tcp->u_rval = sparc_regs.u_regs[U_REG_O0];
2141 #elif defined(SPARC64)
2142 if (check_errno && sparc_regs.tstate & 0x1100000000UL) {
2144 u_error = sparc_regs.u_regs[U_REG_O0];
2147 tcp->u_rval = sparc_regs.u_regs[U_REG_O0];
2150 if (check_errno && is_negated_errno(hppa_r28)) {
2152 u_error = -hppa_r28;
2155 tcp->u_rval = hppa_r28;
2158 if (check_errno && is_negated_errno(sh_r0)) {
2163 tcp->u_rval = sh_r0;
2166 if (check_errno && is_negated_errno(sh64_r9)) {
2171 tcp->u_rval = sh64_r9;
2173 #elif defined(METAG)
2174 /* result pointer in D0Re0 (D0.0) */
2175 if (check_errno && is_negated_errno(metag_regs.dx[0][0])) {
2177 u_error = -metag_regs.dx[0][0];
2180 tcp->u_rval = metag_regs.dx[0][0];
2182 #elif defined(CRISV10) || defined(CRISV32)
2183 if (check_errno && cris_r10 && (unsigned) -cris_r10 < nerrnos) {
2185 u_error = -cris_r10;
2188 tcp->u_rval = cris_r10;
2192 * The standard tile calling convention returns the value (or negative
2193 * errno) in r0, and zero (or positive errno) in r1.
2194 * Until at least kernel 3.8, however, the r1 value is not reflected
2195 * in ptregs at this point, so we use r0 here.
2197 if (check_errno && is_negated_errno(tile_regs.regs[0])) {
2199 u_error = -tile_regs.regs[0];
2201 tcp->u_rval = tile_regs.regs[0];
2203 #elif defined(MICROBLAZE)
2204 if (check_errno && is_negated_errno(microblaze_r3)) {
2206 u_error = -microblaze_r3;
2209 tcp->u_rval = microblaze_r3;
2212 if (check_errno && is_negated_errno(or1k_regs.gpr[11])) {
2214 u_error = -or1k_regs.gpr[11];
2217 tcp->u_rval = or1k_regs.gpr[11];
2219 #elif defined(XTENSA)
2220 if (check_errno && is_negated_errno(xtensa_a2)) {
2222 u_error = -xtensa_a2;
2225 tcp->u_rval = xtensa_a2;
2228 if (check_errno && is_negated_errno(arc_regs.scratch.r0)) {
2230 u_error = -arc_regs.scratch.r0;
2233 tcp->u_rval = arc_regs.scratch.r0;
2236 tcp->u_error = u_error;
2240 dumpio(struct tcb *tcp)
2246 if ((unsigned long) tcp->u_arg[0] >= num_quals)
2248 func = tcp->s_ent->sys_func;
2249 if (func == printargs)
2251 if (qual_flags[tcp->u_arg[0]] & QUAL_READ) {
2252 if (func == sys_read ||
2253 func == sys_pread ||
2255 func == sys_recvfrom) {
2256 dumpstr(tcp, tcp->u_arg[1], tcp->u_rval);
2258 } else if (func == sys_readv) {
2259 dumpiov(tcp, tcp->u_arg[2], tcp->u_arg[1]);
2262 } else if (func == sys_recvmsg) {
2263 dumpiov_in_msghdr(tcp, tcp->u_arg[1]);
2265 } else if (func == sys_recvmmsg) {
2266 dumpiov_in_mmsghdr(tcp, tcp->u_arg[1]);
2271 if (qual_flags[tcp->u_arg[0]] & QUAL_WRITE) {
2272 if (func == sys_write ||
2273 func == sys_pwrite ||
2276 dumpstr(tcp, tcp->u_arg[1], tcp->u_arg[2]);
2277 else if (func == sys_writev)
2278 dumpiov(tcp, tcp->u_arg[2], tcp->u_arg[1]);
2280 else if (func == sys_sendmsg)
2281 dumpiov_in_msghdr(tcp, tcp->u_arg[1]);
2282 else if (func == sys_sendmmsg)
2283 dumpiov_in_mmsghdr(tcp, tcp->u_arg[1]);
2289 trace_syscall_exiting(struct tcb *tcp)
2296 /* Measure the exit time as early as possible to avoid errors. */
2298 gettimeofday(&tv, NULL);
2300 #ifdef USE_LIBUNWIND
2301 if (stack_trace_enabled) {
2302 if (tcp->s_ent->sys_flags & STACKTRACE_INVALIDATE_CACHE)
2303 unwind_cache_invalidate(tcp);
2307 #if SUPPORTED_PERSONALITIES > 1
2308 update_personality(tcp, tcp->currpers);
2310 res = (get_regs_error ? -1 : get_syscall_result(tcp));
2312 get_error(tcp); /* never fails */
2313 if (filtered(tcp) || hide_log_until_execve)
2318 count_syscall(tcp, &tv);
2319 if (cflag == CFLAG_ONLY_STATS) {
2324 /* If not in -ff mode, and printing_tcp != tcp,
2325 * then the log currently does not end with output
2326 * of _our syscall entry_, but with something else.
2327 * We need to say which syscall's return is this.
2329 * Forced reprinting via TCB_REPRINT is used only by
2330 * "strace -ff -oLOG test/threaded_execve" corner case.
2331 * It's the only case when -ff mode needs reprinting.
2333 if ((followfork < 2 && printing_tcp != tcp) || (tcp->flags & TCB_REPRINT)) {
2334 tcp->flags &= ~TCB_REPRINT;
2336 if (tcp->qual_flg & UNDEFINED_SCNO)
2337 tprintf("<... %s resumed> ", undefined_scno_name(tcp));
2339 tprintf("<... %s resumed> ", tcp->s_ent->sys_name);
2344 /* There was error in one of prior ptrace ops */
2347 tprints("= ? <unavailable>\n");
2349 tcp->flags &= ~TCB_INSYSCALL;
2354 if (tcp->qual_flg & QUAL_RAW) {
2355 /* sys_res = printargs(tcp); - but it's nop on sysexit */
2357 /* FIXME: not_failing_only (IOW, option -z) is broken:
2358 * failure of syscall is known only after syscall return.
2359 * Thus we end up with something like this on, say, ENOENT:
2360 * open("doesnt_exist", O_RDONLY <unfinished ...>
2361 * {next syscall decode}
2362 * whereas the intended result is that open(...) line
2363 * is not shown at all.
2365 if (not_failing_only && tcp->u_error)
2366 goto ret; /* ignore failed syscalls */
2367 sys_res = tcp->s_ent->sys_func(tcp);
2372 u_error = tcp->u_error;
2373 if (tcp->qual_flg & QUAL_RAW) {
2375 tprintf("= -1 (errno %ld)", u_error);
2377 tprintf("= %#lx", tcp->u_rval);
2379 else if (!(sys_res & RVAL_NONE) && u_error) {
2381 /* Blocked signals do not interrupt any syscalls.
2382 * In this case syscalls don't return ERESTARTfoo codes.
2384 * Deadly signals set to SIG_DFL interrupt syscalls
2385 * and kill the process regardless of which of the codes below
2386 * is returned by the interrupted syscall.
2387 * In some cases, kernel forces a kernel-generated deadly
2388 * signal to be unblocked and set to SIG_DFL (and thus cause
2389 * death) if it is blocked or SIG_IGNed: for example, SIGSEGV
2390 * or SIGILL. (The alternative is to leave process spinning
2391 * forever on the faulty instruction - not useful).
2393 * SIG_IGNed signals and non-deadly signals set to SIG_DFL
2394 * (for example, SIGCHLD, SIGWINCH) interrupt syscalls,
2395 * but kernel will always restart them.
2398 /* Most common type of signal-interrupted syscall exit code.
2399 * The system call will be restarted with the same arguments
2400 * if SA_RESTART is set; otherwise, it will fail with EINTR.
2402 tprints("= ? ERESTARTSYS (To be restarted if SA_RESTART is set)");
2404 case ERESTARTNOINTR:
2405 /* Rare. For example, fork() returns this if interrupted.
2406 * SA_RESTART is ignored (assumed set): the restart is unconditional.
2408 tprints("= ? ERESTARTNOINTR (To be restarted)");
2410 case ERESTARTNOHAND:
2411 /* pause(), rt_sigsuspend() etc use this code.
2412 * SA_RESTART is ignored (assumed not set):
2413 * syscall won't restart (will return EINTR instead)
2414 * even after signal with SA_RESTART set. However,
2415 * after SIG_IGN or SIG_DFL signal it will restart
2416 * (thus the name "restart only if has no handler").
2418 tprints("= ? ERESTARTNOHAND (To be restarted if no handler)");
2420 case ERESTART_RESTARTBLOCK:
2421 /* Syscalls like nanosleep(), poll() which can't be
2422 * restarted with their original arguments use this
2423 * code. Kernel will execute restart_syscall() instead,
2424 * which changes arguments before restarting syscall.
2425 * SA_RESTART is ignored (assumed not set) similarly
2426 * to ERESTARTNOHAND. (Kernel can't honor SA_RESTART
2427 * since restart data is saved in "restart block"
2428 * in task struct, and if signal handler uses a syscall
2429 * which in turn saves another such restart block,
2430 * old data is lost and restart becomes impossible)
2432 tprints("= ? ERESTART_RESTARTBLOCK (Interrupted by signal)");
2435 if ((unsigned long) u_error < nerrnos
2436 && errnoent[u_error])
2437 tprintf("= -1 %s (%s)", errnoent[u_error],
2440 tprintf("= -1 ERRNO_%lu (%s)", u_error,
2444 if ((sys_res & RVAL_STR) && tcp->auxstr)
2445 tprintf(" (%s)", tcp->auxstr);
2448 if (sys_res & RVAL_NONE)
2451 switch (sys_res & RVAL_MASK) {
2453 #if SUPPORTED_PERSONALITIES > 1
2454 if (current_wordsize < sizeof(long))
2456 (unsigned int) tcp->u_rval);
2459 tprintf("= %#lx", tcp->u_rval);
2462 tprintf("= %#lo", tcp->u_rval);
2465 tprintf("= %lu", tcp->u_rval);
2468 tprintf("= %ld", tcp->u_rval);
2473 printfd(tcp, tcp->u_rval);
2476 tprintf("= %ld", tcp->u_rval);
2478 #if defined(LINUX_MIPSN32) || defined(X32)
2481 tprintf("= %#llx", tcp->u_lrval);
2484 tprintf("= %#llo", tcp->u_lrval);
2487 case RVAL_LUDECIMAL:
2488 tprintf("= %llu", tcp->u_lrval);
2492 tprintf("= %lld", tcp->u_lrval);
2498 "invalid rval format\n");
2502 if ((sys_res & RVAL_STR) && tcp->auxstr)
2503 tprintf(" (%s)", tcp->auxstr);
2506 tv_sub(&tv, &tv, &tcp->etime);
2507 tprintf(" <%ld.%06ld>",
2508 (long) tv.tv_sec, (long) tv.tv_usec);
2514 #ifdef USE_LIBUNWIND
2515 if (stack_trace_enabled)
2516 unwind_print_stacktrace(tcp);
2520 tcp->flags &= ~TCB_INSYSCALL;
2525 trace_syscall(struct tcb *tcp)
2527 return exiting(tcp) ?
2528 trace_syscall_exiting(tcp) : trace_syscall_entering(tcp);