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.
42 #include <sys/syscall.h>
43 #include <sys/param.h>
47 # define fpq kernel_fpq
49 # define fpu kernel_fpu
61 #ifndef PTRACE_PEEKUSR
62 # define PTRACE_PEEKUSR PTRACE_PEEKUSER
64 #elif defined(HAVE_LINUX_PTRACE_H)
66 #include <linux/ptrace.h>
69 #if defined(LINUX) && defined(IA64)
70 # include <asm/ptrace_offsets.h>
74 #define NR_SYSCALL_BASE 0
77 #define ERESTARTSYS 512
79 #ifndef ERESTARTNOINTR
80 #define ERESTARTNOINTR 513
82 #ifndef ERESTARTNOHAND
83 #define ERESTARTNOHAND 514 /* restart if no handler.. */
86 #define ENOIOCTLCMD 515 /* No ioctl command */
94 #undef NR_SYSCALL_BASE
95 #define NR_SYSCALL_BASE __NR_SYSCALL_BASE
101 /* Define these shorthand notations to simplify the syscallent files. */
102 #define TF TRACE_FILE
104 #define TN TRACE_NETWORK
105 #define TP TRACE_PROCESS
106 #define TS TRACE_SIGNAL
108 struct sysent sysent0[] = {
109 #include "syscallent.h"
111 int nsyscalls0 = sizeof sysent0 / sizeof sysent0[0];
113 #if SUPPORTED_PERSONALITIES >= 2
114 struct sysent sysent1[] = {
115 #include "syscallent1.h"
117 int nsyscalls1 = sizeof sysent1 / sizeof sysent1[0];
118 #endif /* SUPPORTED_PERSONALITIES >= 2 */
120 #if SUPPORTED_PERSONALITIES >= 3
121 struct sysent sysent2[] = {
122 #include "syscallent2.h"
124 int nsyscalls2 = sizeof sysent2 / sizeof sysent2[0];
125 #endif /* SUPPORTED_PERSONALITIES >= 3 */
127 struct sysent *sysent;
130 /* Now undef them since short defines cause wicked namespace pollution. */
137 char *errnoent0[] = {
138 #include "errnoent.h"
140 int nerrnos0 = sizeof errnoent0 / sizeof errnoent0[0];
142 #if SUPPORTED_PERSONALITIES >= 2
143 char *errnoent1[] = {
144 #include "errnoent1.h"
146 int nerrnos1 = sizeof errnoent1 / sizeof errnoent1[0];
147 #endif /* SUPPORTED_PERSONALITIES >= 2 */
149 #if SUPPORTED_PERSONALITIES >= 3
150 char *errnoent2[] = {
151 #include "errnoent2.h"
153 int nerrnos2 = sizeof errnoent2 / sizeof errnoent2[0];
154 #endif /* SUPPORTED_PERSONALITIES >= 3 */
159 int current_personality;
162 set_personality(personality)
165 switch (personality) {
167 errnoent = errnoent0;
170 nsyscalls = nsyscalls0;
171 ioctlent = ioctlent0;
172 nioctlents = nioctlents0;
173 signalent = signalent0;
174 nsignals = nsignals0;
177 #if SUPPORTED_PERSONALITIES >= 2
179 errnoent = errnoent1;
182 nsyscalls = nsyscalls1;
183 ioctlent = ioctlent1;
184 nioctlents = nioctlents1;
185 signalent = signalent1;
186 nsignals = nsignals1;
188 #endif /* SUPPORTED_PERSONALITIES >= 2 */
190 #if SUPPORTED_PERSONALITIES >= 3
192 errnoent = errnoent2;
195 nsyscalls = nsyscalls2;
196 ioctlent = ioctlent2;
197 nioctlents = nioctlents2;
198 signalent = signalent2;
199 nsignals = nsignals2;
201 #endif /* SUPPORTED_PERSONALITIES >= 3 */
207 current_personality = personality;
211 int qual_flags[MAX_QUALS];
213 static int call_count[MAX_QUALS];
214 static int error_count[MAX_QUALS];
215 static struct timeval tv_count[MAX_QUALS];
216 static int sorted_count[MAX_QUALS];
218 static struct timeval shortest = { 1000000, 0 };
220 static int qual_syscall(), qual_signal(), qual_fault(), qual_desc();
222 static struct qual_options {
228 { QUAL_TRACE, "trace", qual_syscall, "system call" },
229 { QUAL_TRACE, "t", qual_syscall, "system call" },
230 { QUAL_ABBREV, "abbrev", qual_syscall, "system call" },
231 { QUAL_ABBREV, "a", qual_syscall, "system call" },
232 { QUAL_VERBOSE, "verbose", qual_syscall, "system call" },
233 { QUAL_VERBOSE, "v", qual_syscall, "system call" },
234 { QUAL_RAW, "raw", qual_syscall, "system call" },
235 { QUAL_RAW, "x", qual_syscall, "system call" },
236 { QUAL_SIGNAL, "signal", qual_signal, "signal" },
237 { QUAL_SIGNAL, "signals", qual_signal, "signal" },
238 { QUAL_SIGNAL, "s", qual_signal, "signal" },
239 { QUAL_FAULT, "fault", qual_fault, "fault" },
240 { QUAL_FAULT, "faults", qual_fault, "fault" },
241 { QUAL_FAULT, "m", qual_fault, "fault" },
242 { QUAL_READ, "read", qual_desc, "descriptor" },
243 { QUAL_READ, "reads", qual_desc, "descriptor" },
244 { QUAL_READ, "r", qual_desc, "descriptor" },
245 { QUAL_WRITE, "write", qual_desc, "descriptor" },
246 { QUAL_WRITE, "writes", qual_desc, "descriptor" },
247 { QUAL_WRITE, "w", qual_desc, "descriptor" },
248 { 0, NULL, NULL, NULL },
252 qualify_one(n, opt, not)
254 struct qual_options *opt;
258 qual_flags[n] &= ~opt->bitflag;
260 qual_flags[n] |= opt->bitflag;
264 qual_syscall(s, opt, not)
266 struct qual_options *opt;
272 for (i = 0; i < nsyscalls; i++) {
273 if (strcmp(s, sysent[i].sys_name) == 0) {
274 qualify_one(i, opt, not);
282 qual_signal(s, opt, not)
284 struct qual_options *opt;
290 if (s && *s && isdigit((unsigned char)*s)) {
291 qualify_one(atoi(s), opt, not);
296 for (i = 0; s[i]; i++)
297 s[i] = toupper((unsigned char)(s[i]));
298 if (strncmp(s, "SIG", 3) == 0)
300 for (i = 0; i <= NSIG; i++)
301 if (strcmp(s, signame(i) + 3) == 0) {
302 qualify_one(atoi(s), opt, not);
309 qual_fault(s, opt, not)
311 struct qual_options *opt;
318 qual_desc(s, opt, not)
320 struct qual_options *opt;
323 if (s && *s && isdigit((unsigned char)*s)) {
324 qualify_one(atoi(s), opt, not);
333 if (strcmp(s, "file") == 0)
335 if (strcmp(s, "ipc") == 0)
337 if (strcmp(s, "network") == 0)
338 return TRACE_NETWORK;
339 if (strcmp(s, "process") == 0)
340 return TRACE_PROCESS;
341 if (strcmp(s, "signal") == 0)
350 struct qual_options *opt;
355 opt = &qual_options[0];
356 for (i = 0; (p = qual_options[i].option_name); i++) {
358 if (strncmp(s, p, n) == 0 && s[n] == '=') {
359 opt = &qual_options[i];
369 if (strcmp(s, "none") == 0) {
373 if (strcmp(s, "all") == 0) {
374 for (i = 0; i < MAX_QUALS; i++) {
376 qual_flags[i] &= ~opt->bitflag;
378 qual_flags[i] |= opt->bitflag;
382 for (i = 0; i < MAX_QUALS; i++) {
384 qual_flags[i] |= opt->bitflag;
386 qual_flags[i] &= ~opt->bitflag;
388 for (p = strtok(s, ","); p; p = strtok(NULL, ",")) {
389 if (opt->bitflag == QUAL_TRACE && (n = lookup_class(p)) > 0) {
390 for (i = 0; i < MAX_QUALS; i++) {
391 if (sysent[i].sys_flags & n) {
393 qual_flags[i] &= ~opt->bitflag;
395 qual_flags[i] |= opt->bitflag;
400 if (opt->qualify(p, opt, not)) {
401 fprintf(stderr, "strace: invalid %s `%s'\n",
402 opt->argument_name, p);
415 if (tcp->u_arg[0] < 0 || tcp->u_arg[0] >= MAX_QUALS)
417 switch (tcp->scno + NR_SYSCALL_BASE) {
425 if (qual_flags[tcp->u_arg[0]] & QUAL_READ)
426 dumpstr(tcp, tcp->u_arg[1], tcp->u_rval);
435 if (qual_flags[tcp->u_arg[0]] & QUAL_WRITE)
436 dumpstr(tcp, tcp->u_arg[1], tcp->u_arg[2]);
440 if (qual_flags[tcp->u_arg[0]] & QUAL_READ)
441 dumpiov(tcp, tcp->u_arg[2], tcp->u_arg[1]);
447 if (qual_flags[tcp->u_arg[0]] & QUAL_WRITE)
448 dumpiov(tcp, tcp->u_arg[2], tcp->u_arg[1]);
455 enum subcall_style { shift_style, deref_style, mask_style, door_style };
457 enum subcall_style { shift_style, deref_style, mask_style, door_style, table_style };
465 const struct subcall subcalls_table[] = {
466 { SYS_shmsys, 5, { SYS_shmat, SYS_shmctl, SYS_shmdt, SYS_shmget, SYS_shmctl } },
468 { SYS_semsys, 4, { SYS___semctl, SYS_semget, SYS_semop, SYS_semconfig } },
470 { SYS_semsys, 3, { SYS___semctl, SYS_semget, SYS_semop } },
472 { SYS_msgsys, 4, { SYS_msgctl, SYS_msgget, SYS_msgsnd, SYS_msgrcv } },
476 #if !(defined(LINUX) && ( defined(ALPHA) || defined(MIPS) ))
478 const int socket_map [] = {
481 /* SYS_CONNECT */ 98,
482 /* SYS_LISTEN */ 106,
484 /* SYS_GETSOCKNAME */ 150,
485 /* SYS_GETPEERNAME */ 141,
486 /* SYS_SOCKETPAIR */ 135,
489 /* SYS_SENDTO */ 133,
490 /* SYS_RECVFROM */ 125,
491 /* SYS_SHUTDOWN */ 134,
492 /* SYS_SETSOCKOPT */ 105,
493 /* SYS_GETSOCKOPT */ 118,
494 /* SYS_SENDMSG */ 114,
495 /* SYS_RECVMSG */ 113
499 sparc_socket_decode (tcp)
505 if (tcp->u_arg [0] < 1 || tcp->u_arg [0] > sizeof(socket_map)/sizeof(int)+1){
508 tcp->scno = socket_map [tcp->u_arg [0]-1];
509 n = tcp->u_nargs = sysent [tcp->scno].nargs;
510 addr = tcp->u_arg [1];
511 for (i = 0; i < n; i++){
513 if (umoven (tcp, addr, sizeof (arg), (void *) &arg) < 0)
515 tcp->u_arg [i] = arg;
516 addr += sizeof (arg);
521 decode_subcall(tcp, subcall, nsubcalls, style)
525 enum subcall_style style;
527 long addr, mask, arg;
532 if (tcp->u_arg[0] < 0 || tcp->u_arg[0] >= nsubcalls)
534 tcp->scno = subcall + tcp->u_arg[0];
535 if (sysent[tcp->scno].nargs != -1)
536 tcp->u_nargs = sysent[tcp->scno].nargs;
539 for (i = 0; i < tcp->u_nargs; i++)
540 tcp->u_arg[i] = tcp->u_arg[i + 1];
543 if (tcp->u_arg[0] < 0 || tcp->u_arg[0] >= nsubcalls)
545 tcp->scno = subcall + tcp->u_arg[0];
546 addr = tcp->u_arg[1];
547 for (i = 0; i < sysent[tcp->scno].nargs; i++) {
548 if (umove(tcp, addr, &arg) < 0)
553 tcp->u_nargs = sysent[tcp->scno].nargs;
556 mask = (tcp->u_arg[0] >> 8) & 0xff;
557 for (i = 0; mask; i++)
561 tcp->u_arg[0] &= 0xff;
562 tcp->scno = subcall + i;
563 if (sysent[tcp->scno].nargs != -1)
564 tcp->u_nargs = sysent[tcp->scno].nargs;
568 * Oh, yuck. The call code is the *sixth* argument.
569 * (don't you mean the *last* argument? - JH)
571 if (tcp->u_arg[5] < 0 || tcp->u_arg[5] >= nsubcalls)
573 tcp->scno = subcall + tcp->u_arg[5];
574 if (sysent[tcp->scno].nargs != -1)
575 tcp->u_nargs = sysent[tcp->scno].nargs;
581 for (i = 0; i < sizeof(subcalls_table) / sizeof(struct subcall); i++)
582 if (subcalls_table[i].call == tcp->scno) break;
583 if (i < sizeof(subcalls_table) / sizeof(struct subcall) &&
584 tcp->u_arg[0] >= 0 && tcp->u_arg[0] < subcalls_table[i].nsubcalls) {
585 tcp->scno = subcalls_table[i].subcalls[tcp->u_arg[0]];
586 for (i = 0; i < tcp->u_nargs; i++)
587 tcp->u_arg[i] = tcp->u_arg[i + 1];
595 struct tcb *tcp_last = NULL;
598 internal_syscall(tcp)
602 * We must always trace a few critical system calls in order to
603 * correctly support following forks in the presence of tracing
606 switch (tcp->scno + NR_SYSCALL_BASE) {
673 #ifdef __NR_exit_group
674 case __NR_exit_group:
689 #elif defined (POWERPC)
690 static long result,flags;
695 #elif defined (ALPHA)
698 #elif defined (SPARC)
699 static struct regs regs;
700 static unsigned long trap;
704 #elif defined(S390) || defined(S390X)
707 static long syscall_mode;
712 #elif defined(X86_64)
730 #if defined(S390) || defined(S390X)
731 if (upeek(pid, PT_GPR2, &syscall_mode) < 0)
733 if (syscall_mode != -ENOSYS){
735 * Since kernel version 2.5.44 the scno gets passed in gpr2.
741 * Old style of "passing" the scno via the SVC instruction.
744 long opcode, offset_reg, tmp;
746 int gpr_offset[16] = {PT_GPR0, PT_GPR1, PT_ORIGGPR2, PT_GPR3,
747 PT_GPR4, PT_GPR5, PT_GPR6, PT_GPR7,
748 PT_GPR8, PT_GPR9, PT_GPR10, PT_GPR11,
749 PT_GPR12, PT_GPR13, PT_GPR14, PT_GPR15};
751 if (upeek(pid, PT_PSWADDR, &pc) < 0)
753 opcode = ptrace(PTRACE_PEEKTEXT, pid, (char *)(pc-sizeof(long)), 0);
758 * We have to check if the SVC got executed directly or via an
759 * EXECUTE instruction. In case of EXECUTE it is necessary to do
760 * instruction decoding to derive the system call number.
761 * Unfortunately the opcode sizes of EXECUTE and SVC are differently,
762 * so that this doesn't work if a SVC opcode is part of an EXECUTE
763 * opcode. Since there is no way to find out the opcode size this
764 * is the best we can do...
767 if ((opcode & 0xff00) == 0x0a00) {
769 scno = opcode & 0xff;
772 /* SVC got executed by EXECUTE instruction */
775 * Do instruction decoding of EXECUTE. If you really want to
776 * understand this, read the Principles of Operations.
778 svc_addr = (void *) (opcode & 0xfff);
781 offset_reg = (opcode & 0x000f0000) >> 16;
782 if (offset_reg && (upeek(pid, gpr_offset[offset_reg], &tmp) < 0))
787 offset_reg = (opcode & 0x0000f000) >> 12;
788 if (offset_reg && (upeek(pid, gpr_offset[offset_reg], &tmp) < 0))
792 scno = ptrace(PTRACE_PEEKTEXT, pid, svc_addr, 0);
801 offset_reg = (opcode & 0x00f00000) >> 20;
802 if (offset_reg && (upeek(pid, gpr_offset[offset_reg], &tmp) < 0))
805 scno = (scno | tmp) & 0xff;
808 #elif defined (POWERPC)
809 if (upeek(pid, 4*PT_R0, &scno) < 0)
811 if (!(tcp->flags & TCB_INSYSCALL)) {
812 /* Check if we return from execve. */
813 if (scno == 0 && (tcp->flags & TCB_WAITEXECVE)) {
814 tcp->flags &= ~TCB_WAITEXECVE;
819 if (upeek(pid, 4*ORIG_EAX, &scno) < 0)
821 #elif defined (X86_64)
822 if (upeek(pid, 8*ORIG_RAX, &scno) < 0)
825 if (!(tcp->flags & TCB_INSYSCALL)) {
826 static int currpers=-1;
829 /* Check CS register value. On x86-64 linux it is:
830 * 0x33 for long mode (64 bit)
831 * 0x23 for compatibility mode (32 bit)
832 * It takes only one ptrace and thus doesn't need
835 if (upeek(pid, 8*CS, &val) < 0)
839 case 0x23: currpers = 1; break;
840 case 0x33: currpers = 0; break;
842 fprintf(stderr, "Unknown value CS=0x%02X while "
843 "detecting personality of process "
844 "PID=%d\n", (int)val, pid);
845 currpers = current_personality;
849 /* This version analyzes the opcode of a syscall instruction.
850 * (int 0x80 on i386 vs. syscall on x86-64)
851 * It works, but is too complicated.
853 unsigned long val, rip, i;
855 if(upeek(pid, 8*RIP, &rip)<0)
856 perror("upeek(RIP)");
858 /* sizeof(syscall) == sizeof(int 0x80) == 2 */
862 call = ptrace(PTRACE_PEEKTEXT,pid,(char *)rip,0);
864 printf("ptrace_peektext failed: %s\n",
866 switch (call & 0xffff)
868 /* x86-64: syscall = 0x0f 0x05 */
869 case 0x050f: currpers = 0; break;
870 /* i386: int 0x80 = 0xcd 0x80 */
871 case 0x80cd: currpers = 1; break;
873 currpers = current_personality;
875 "Unknown syscall opcode (0x%04X) while "
876 "detecting personality of process "
877 "PID=%d\n", (int)call, pid);
881 if(currpers != current_personality)
883 char *names[]={"64 bit", "32 bit"};
884 set_personality(currpers);
885 printf("[ Process PID=%d runs in %s mode. ]\n",
886 pid, names[current_personality]);
890 # define IA64_PSR_IS ((long)1 << 34)
891 if (upeek (pid, PT_CR_IPSR, &psr) >= 0)
892 ia32 = (psr & IA64_PSR_IS) != 0;
893 if (!(tcp->flags & TCB_INSYSCALL)) {
895 if (upeek(pid, PT_R1, &scno) < 0) /* orig eax */
897 /* Check if we return from execve. */
899 if (upeek (pid, PT_R15, &scno) < 0)
903 /* syscall in progress */
904 if (upeek (pid, PT_R8, &r8) < 0)
906 if (upeek (pid, PT_R10, &r10) < 0)
909 if (tcp->flags & TCB_WAITEXECVE) {
910 tcp->flags &= ~TCB_WAITEXECVE;
917 upeek(pid, 4*15, &pc);
918 umoven(tcp, pc-4, 4, (char *)&scno);
922 if (upeek(pid, 4*PT_ORIG_D0, &scno) < 0)
925 if (upeek(pid, REG_A3, &a3) < 0)
928 if(!(tcp->flags & TCB_INSYSCALL)) {
929 if (upeek(pid, REG_V0, &scno) < 0)
932 if (scno < 0 || scno > nsyscalls) {
933 if(a3 == 0 || a3 == -1) {
935 fprintf (stderr, "stray syscall exit: v0 = %ld\n", scno);
940 if (upeek(pid, REG_V0, &r2) < 0)
943 #elif defined (ALPHA)
944 if (upeek(pid, REG_A3, &a3) < 0)
947 if (!(tcp->flags & TCB_INSYSCALL)) {
948 if (upeek(pid, REG_R0, &scno) < 0)
951 /* Check if we return from execve. */
952 if (scno == 0 && tcp->flags & TCB_WAITEXECVE) {
953 tcp->flags &= ~TCB_WAITEXECVE;
958 * Do some sanity checks to figure out if it's
959 * really a syscall entry
961 if (scno < 0 || scno > nsyscalls) {
962 if (a3 == 0 || a3 == -1) {
964 fprintf (stderr, "stray syscall exit: r0 = %ld\n", scno);
970 if (upeek(pid, REG_R0, &r0) < 0)
973 #elif defined (SPARC)
974 /* Everything we need is in the current register set. */
975 if (ptrace(PTRACE_GETREGS,pid,(char *)®s,0) < 0)
978 /* If we are entering, then disassemble the syscall trap. */
979 if (!(tcp->flags & TCB_INSYSCALL)) {
980 /* Retrieve the syscall trap instruction. */
982 trap = ptrace(PTRACE_PEEKTEXT,pid,(char *)regs.r_pc,0);
986 /* Disassemble the trap to see what personality to use. */
989 /* Linux/SPARC syscall trap. */
993 /* Linux/SPARC64 syscall trap. */
994 fprintf(stderr,"syscall: Linux/SPARC64 not supported yet\n");
997 /* SunOS syscall trap. (pers 1) */
998 fprintf(stderr,"syscall: SunOS no support\n");
1001 /* Solaris 2.x syscall trap. (per 2) */
1005 /* NetBSD/FreeBSD syscall trap. */
1006 fprintf(stderr,"syscall: NetBSD/FreeBSD not supported\n");
1009 /* Solaris 2.x gettimeofday */
1013 /* Unknown syscall trap. */
1014 if(tcp->flags & TCB_WAITEXECVE) {
1015 tcp->flags &= ~TCB_WAITEXECVE;
1018 fprintf(stderr,"syscall: unknown syscall trap %08x %08x\n", trap, regs.r_pc);
1022 /* Extract the system call number from the registers. */
1023 if (trap == 0x91d02027)
1029 memmove (®s.r_o0, ®s.r_o1, 7*sizeof(regs.r_o0));
1033 if (upeek(pid, PT_GR20, &scno) < 0)
1035 if (!(tcp->flags & TCB_INSYSCALL)) {
1036 /* Check if we return from execve. */
1037 if ((tcp->flags & TCB_WAITEXECVE)) {
1038 tcp->flags &= ~TCB_WAITEXECVE;
1044 * In the new syscall ABI, the system call number is in R3.
1046 if (upeek(pid, 4*(REG_REG0+3), &scno) < 0)
1050 /* Odd as it may seem, a glibc bug has been known to cause
1051 glibc to issue bogus negative syscall numbers. So for
1052 our purposes, make strace print what it *should* have been */
1053 long correct_scno = (scno & 0xff);
1056 "Detected glibc bug: bogus system call number = %ld, "
1057 "correcting to %ld\n",
1060 scno = correct_scno;
1064 if (!(tcp->flags & TCB_INSYSCALL)) {
1065 /* Check if we return from execve. */
1066 if (scno == 0 && tcp->flags & TCB_WAITEXECVE) {
1067 tcp->flags &= ~TCB_WAITEXECVE;
1074 if (upeek(pid, uoff(u_arg[7]), &scno) < 0)
1077 /* new syscall ABI returns result in R0 */
1078 if (upeek(pid, 4*REG_REG0, (long *)&r0) < 0)
1082 #ifdef HAVE_PR_SYSCALL
1083 scno = tcp->status.PR_SYSCALL;
1084 #else /* !HAVE_PR_SYSCALL */
1086 scno = tcp->status.PR_WHAT;
1088 if (pread(tcp->pfd_reg, ®s, sizeof(regs), 0) < 0) {
1092 switch (regs.r_eax) {
1095 pread(tcp->pfd, &scno, sizeof(scno), regs.r_esp + sizeof(int));
1101 #endif /* FREEBSD */
1102 #endif /* !HAVE_PR_SYSCALL */
1103 #endif /* USE_PROCFS */
1104 if (!(tcp->flags & TCB_INSYSCALL))
1116 #else /* USE_PROCFS */
1117 int scno = tcp->scno;
1119 if (!(tcp->flags & TCB_INSYSCALL)) {
1120 if (tcp->status.PR_WHY != PR_SYSENTRY) {
1124 || scno == SYS_vfork
1125 #endif /* SYS_vfork */
1127 || scno == SYS_fork1
1128 #endif /* SYS_fork1 */
1130 || scno == SYS_forkall
1131 #endif /* SYS_forkall */
1133 || scno == SYS_rfork1
1134 #endif /* SYS_fork1 */
1136 || scno == SYS_rforkall
1137 #endif /* SYS_rforkall */
1139 /* We are returning in the child, fake it. */
1140 tcp->status.PR_WHY = PR_SYSENTRY;
1142 tcp->status.PR_WHY = PR_SYSEXIT;
1145 fprintf(stderr, "syscall: missing entry\n");
1146 tcp->flags |= TCB_INSYSCALL;
1151 if (tcp->status.PR_WHY != PR_SYSEXIT) {
1152 fprintf(stderr, "syscall: missing exit\n");
1153 tcp->flags &= ~TCB_INSYSCALL;
1156 #endif /* USE_PROCFS */
1158 if (!(tcp->flags & TCB_INSYSCALL)) {
1160 fprintf(stderr, "syscall: missing entry\n");
1161 tcp->flags |= TCB_INSYSCALL;
1168 * This happens when a signal handler
1169 * for a signal which interrupted a
1170 * a system call makes another system call.
1172 fprintf(stderr, "syscall: missing exit\n");
1174 tcp->flags &= ~TCB_INSYSCALL;
1180 if (upeek(pid, 4*EAX, &eax) < 0)
1182 if (eax != -ENOSYS && !(tcp->flags & TCB_INSYSCALL)) {
1184 fprintf(stderr, "stray syscall exit: eax = %ld\n", eax);
1187 #elif defined (X86_64)
1188 if (upeek(pid, 8*RAX, &rax) < 0)
1190 if (rax != -ENOSYS && !(tcp->flags & TCB_INSYSCALL)) {
1192 fprintf(stderr, "stray syscall exit: rax = %ld\n", rax);
1195 #elif defined (S390) || defined (S390X)
1196 if (upeek(pid, PT_GPR2, &gpr2) < 0)
1198 if (syscall_mode != -ENOSYS)
1199 syscall_mode = tcp->scno;
1200 if (gpr2 != syscall_mode && !(tcp->flags & TCB_INSYSCALL)) {
1202 fprintf(stderr, "stray syscall exit: gpr2 = %ld\n", gpr2);
1205 #elif defined (POWERPC)
1206 # define SO_MASK 0x10000000
1207 if (upeek(pid, 4*PT_CCR, &flags) < 0)
1209 if (upeek(pid, 4*PT_R3, &result) < 0)
1211 if (flags & SO_MASK)
1213 #elif defined (M68K)
1214 if (upeek(pid, 4*PT_D0, &d0) < 0)
1216 if (d0 != -ENOSYS && !(tcp->flags & TCB_INSYSCALL)) {
1218 fprintf(stderr, "stray syscall exit: d0 = %ld\n", d0);
1222 if (upeek(pid, 4*0, (long *)&r0) < 0)
1224 if ( 0 && r0 != -ENOSYS && !(tcp->flags & TCB_INSYSCALL)) {
1226 fprintf(stderr, "stray syscall exit: d0 = %ld\n", r0);
1229 #elif defined (HPPA)
1230 if (upeek(pid, PT_GR28, &r28) < 0)
1233 if (upeek(pid, PT_R10, &r10) < 0)
1235 if (upeek(pid, PT_R8, &r8) < 0)
1237 if (ia32 && r8 != -ENOSYS && !(tcp->flags & TCB_INSYSCALL)) {
1239 fprintf(stderr, "stray syscall exit: r8 = %ld\n", r8);
1253 #if defined(S390) || defined(S390X)
1254 if (gpr2 && (unsigned) -gpr2 < nerrnos) {
1262 #else /* !S390 && !S390X */
1264 if (eax < 0 && -eax < nerrnos) {
1274 if (rax < 0 && -rax < nerrnos) {
1288 if (err < 0 && -err < nerrnos) {
1316 if (result && (unsigned) -result < nerrnos) {
1321 tcp->u_rval = result;
1324 #else /* !POWERPC */
1326 if (d0 && (unsigned) -d0 < nerrnos) {
1336 if (r0 && (unsigned) -r0 < nerrnos) {
1356 if (regs.r_psr & PSR_C) {
1358 u_error = regs.r_o0;
1361 tcp->u_rval = regs.r_o0;
1366 if (r28 && (unsigned) -r28 < nerrnos) {
1376 /* interpret R0 as return value or error number */
1377 if (r0 && (unsigned) -r0 < nerrnos) {
1391 #endif /* POWERPC */
1396 #endif /* S390 || S390X */
1399 /* get error code from user struct */
1400 if (upeek(pid, uoff(u_error), &u_error) < 0)
1402 u_error >>= 24; /* u_error is a char */
1404 /* get system call return value */
1405 if (upeek(pid, uoff(u_rval1), &tcp->u_rval) < 0)
1410 /* Judicious guessing goes a long way. */
1411 if (tcp->status.pr_reg[R_PSR] & 0x100000) {
1413 u_error = tcp->status.pr_reg[R_O0];
1416 tcp->u_rval = tcp->status.pr_reg[R_O0];
1421 /* Wanna know how to kill an hour single-stepping? */
1422 if (tcp->status.PR_REG[EFL] & 0x1) {
1424 u_error = tcp->status.PR_REG[EAX];
1427 tcp->u_rval = tcp->status.PR_REG[EAX];
1428 #ifdef HAVE_LONG_LONG
1430 ((unsigned long long) tcp->status.PR_REG[EDX] << 32) +
1431 tcp->status.PR_REG[EAX];
1437 /* Wanna know how to kill an hour single-stepping? */
1438 if (tcp->status.PR_REG[EFLAGS] & 0x1) {
1440 u_error = tcp->status.PR_REG[RAX];
1443 tcp->u_rval = tcp->status.PR_REG[RAX];
1448 if (tcp->status.pr_reg[CTX_A3]) {
1450 u_error = tcp->status.pr_reg[CTX_V0];
1453 tcp->u_rval = tcp->status.pr_reg[CTX_V0];
1459 if (regs.r_eflags & PSL_C) {
1461 u_error = regs.r_eax;
1463 tcp->u_rval = regs.r_eax;
1465 ((unsigned long long) regs.r_edx << 32) + regs.r_eax;
1468 #endif /* FREEBSD */
1469 tcp->u_error = u_error;
1474 force_result(tcp, error, rval)
1480 #if defined(S390) || defined(S390X)
1481 gpr2 = error ? -error : rval;
1482 if (upeek(pid, PT_GPR2, &gpr2) < 0)
1484 if (ptrace(PTRACE_POKEUSER, tcp->pid, (char*)PT_GPR2, gpr2) < 0)
1486 #else /* !S390 && !S390X */
1488 eax = error ? -error : rval;
1489 if (ptrace(PTRACE_POKEUSER, tcp->pid, (char*)(EAX * 4), eax) < 0)
1493 rax = error ? -error : rval;
1494 if (ptrace(PTRACE_POKEUSER, tcp->pid, (char*)(RAX * 4), rax) < 0)
1499 r8 = error ? -error : rval;
1500 if (ptrace(PTRACE_POKEUSER, tcp->pid, (char*)(PT_R8), r8) < 0)
1512 if (ptrace(PTRACE_POKEUSER, tcp->pid, (char*)(PT_R8), r8) < 0 ||
1513 ptrace(PTRACE_POKEUSER, tcp->pid, (char*)(PT_R10), r10) < 0)
1526 if (ptrace(PTRACE_POKEUSER, tcp->pid, (char*)(REG_A3), a3) < 0 ||
1527 ptrace(PTRACE_POKEUSER, tcp->pid, (char*)(REG_V0), r2) < 0)
1531 if (upeek(tcp->pid, 4*PT_CCR, &flags) < 0)
1541 if (ptrace(PTRACE_POKEUSER, tcp->pid, (char*)(4*PT_CCR), flags) < 0 ||
1542 ptrace(PTRACE_POKEUSER, tcp->pid, (char*)(4*PT_R3), result) < 0)
1544 #else /* !POWERPC */
1546 d0 = error ? -error : rval;
1547 if (ptrace(PTRACE_POKEUSER, tcp->pid, (char*)(4*PT_D0), d0) < 0)
1551 r0 = error ? -error : rval;
1552 if (ptrace(PTRACE_POKEUSER, tcp->pid, (char*)(4*0), r0) < 0)
1564 if (ptrace(PTRACE_POKEUSER, tcp->pid, (char*)(REG_A3), a3) < 0 ||
1565 ptrace(PTRACE_POKEUSER, tcp->pid, (char*)(REG_R0), r0) < 0)
1569 if (ptrace(PTRACE_GETREGS, tcp->pid, (char *)®s, 0) < 0)
1572 regs.r_psr |= PSR_C;
1576 regs.r_psr &= ~PSR_C;
1579 if (ptrace(PTRACE_SETREGS, tcp->pid, (char *)®s, 0) < 0)
1583 r28 = error ? -error : rval;
1584 if (ptrace(PTRACE_POKEUSER, tcp->pid, (char*)(PT_GR28), r28) < 0)
1588 r0 = error ? -error : rval;
1589 if (ptrace(PTRACE_POKEUSER, tcp->pid, (char*)(4*REG_REG0), r0) < 0)
1597 #endif /* POWERPC */
1602 #endif /* S390 || S390X */
1605 if (ptrace(PTRACE_POKEUSER, tcp->pid, (char*)uoff(u_error),
1607 ptrace(PTRACE_POKEUSER, tcp->pid, (char*)uoff(u_rval1), rval) < 0)
1615 if (pread(tcp->pfd_reg, ®s, sizeof(regs), 0) < 0) {
1620 regs.r_eflags |= PSL_C;
1624 regs.r_eflags &= ~PSL_C;
1627 if (pwrite(tcp->pfd_reg, ®s, sizeof(regs), 0) < 0) {
1631 #endif /* FREEBSD */
1633 /* All branches reach here on success (only). */
1634 tcp->u_error = error;
1639 int syscall_enter(tcp)
1644 #endif /* !USE_PROCFS */
1646 #if defined(S390) || defined(S390X)
1649 if (tcp->scno >= 0 && tcp->scno < nsyscalls && sysent[tcp->scno].nargs != -1)
1650 tcp->u_nargs = sysent[tcp->scno].nargs;
1652 tcp->u_nargs = MAX_ARGS;
1653 for (i = 0; i < tcp->u_nargs; i++) {
1654 if (upeek(pid,i==0 ? PT_ORIGGPR2:PT_GPR2+i*sizeof(long), &tcp->u_arg[i]) < 0)
1658 #elif defined (ALPHA)
1661 if (tcp->scno >= 0 && tcp->scno < nsyscalls && sysent[tcp->scno].nargs != -1)
1662 tcp->u_nargs = sysent[tcp->scno].nargs;
1664 tcp->u_nargs = MAX_ARGS;
1665 for (i = 0; i < tcp->u_nargs; i++) {
1666 /* WTA: if scno is out-of-bounds this will bomb. Add range-check
1667 * for scno somewhere above here!
1669 if (upeek(pid, REG_A0+i, &tcp->u_arg[i]) < 0)
1673 #elif defined (IA64)
1676 unsigned long *out0, *rbs_end, cfm, sof, sol, i;
1677 /* be backwards compatible with kernel < 2.4.4... */
1679 # define PT_RBS_END PT_AR_BSP
1682 if (upeek(pid, PT_RBS_END, (long *) &rbs_end) < 0)
1684 if (upeek(pid, PT_CFM, (long *) &cfm) < 0)
1687 sof = (cfm >> 0) & 0x7f;
1688 sol = (cfm >> 7) & 0x7f;
1689 out0 = ia64_rse_skip_regs(rbs_end, -sof + sol);
1691 if (tcp->scno >= 0 && tcp->scno < nsyscalls
1692 && sysent[tcp->scno].nargs != -1)
1693 tcp->u_nargs = sysent[tcp->scno].nargs;
1695 tcp->u_nargs = MAX_ARGS;
1696 for (i = 0; i < tcp->u_nargs; ++i) {
1697 if (umoven(tcp, (unsigned long) ia64_rse_skip_regs(out0, i),
1698 sizeof(long), (char *) &tcp->u_arg[i]) < 0)
1704 if (/* EBX = out0 */
1705 upeek(pid, PT_R11, (long *) &tcp->u_arg[0]) < 0
1707 || upeek(pid, PT_R9, (long *) &tcp->u_arg[1]) < 0
1709 || upeek(pid, PT_R10, (long *) &tcp->u_arg[2]) < 0
1711 || upeek(pid, PT_R14, (long *) &tcp->u_arg[3]) < 0
1713 || upeek(pid, PT_R15, (long *) &tcp->u_arg[4]) < 0
1715 || upeek(pid, PT_R13, (long *) &tcp->u_arg[5]) < 0)
1718 for (i = 0; i < 6; ++i)
1719 /* truncate away IVE sign-extension */
1720 tcp->u_arg[i] &= 0xffffffff;
1722 if (tcp->scno >= 0 && tcp->scno < nsyscalls
1723 && sysent[tcp->scno].nargs != -1)
1724 tcp->u_nargs = sysent[tcp->scno].nargs;
1729 #elif defined (MIPS)
1734 if (tcp->scno >= 0 && tcp->scno < nsyscalls && sysent[tcp->scno].nargs != -1)
1735 nargs = tcp->u_nargs = sysent[tcp->scno].nargs;
1737 nargs = tcp->u_nargs = MAX_ARGS;
1739 if(upeek(pid, REG_SP, &sp) < 0)
1741 for(i = 0; i < 4; i++) {
1742 if (upeek(pid, REG_A0 + i, &tcp->u_arg[i])<0)
1745 umoven(tcp, sp+16, (nargs-4) * sizeof(tcp->u_arg[0]),
1746 (char *)(tcp->u_arg + 4));
1748 for(i = 0; i < nargs; i++) {
1749 if (upeek(pid, REG_A0 + i, &tcp->u_arg[i]) < 0)
1754 #elif defined (POWERPC)
1756 #define PT_ORIG_R3 34
1760 if (tcp->scno >= 0 && tcp->scno < nsyscalls && sysent[tcp->scno].nargs != -1)
1761 tcp->u_nargs = sysent[tcp->scno].nargs;
1763 tcp->u_nargs = MAX_ARGS;
1764 for (i = 0; i < tcp->u_nargs; i++) {
1765 if (upeek(pid, (i==0) ? (4*PT_ORIG_R3) : ((i+PT_R3)*4), &tcp->u_arg[i]) < 0)
1769 #elif defined (SPARC)
1773 if (tcp->scno >= 0 && tcp->scno < nsyscalls && sysent[tcp->scno].nargs != -1)
1774 tcp->u_nargs = sysent[tcp->scno].nargs;
1776 tcp->u_nargs = MAX_ARGS;
1777 for (i = 0; i < tcp->u_nargs; i++)
1778 tcp->u_arg[i] = *((®s.r_o0) + i);
1780 #elif defined (HPPA)
1784 if (tcp->scno >= 0 && tcp->scno < nsyscalls && sysent[tcp->scno].nargs != -1)
1785 tcp->u_nargs = sysent[tcp->scno].nargs;
1787 tcp->u_nargs = MAX_ARGS;
1788 for (i = 0; i < tcp->u_nargs; i++) {
1789 if (upeek(pid, PT_GR26-4*i, &tcp->u_arg[i]) < 0)
1796 static int syscall_regs[] = {
1797 REG_REG0+4, REG_REG0+5, REG_REG0+6, REG_REG0+7,
1798 REG_REG0, REG_REG0+1, REG_REG0+2
1801 tcp->u_nargs = sysent[tcp->scno].nargs;
1802 for (i = 0; i < tcp->u_nargs; i++) {
1803 if (upeek(pid, 4*syscall_regs[i], &tcp->u_arg[i]) < 0)
1807 #elif defined(X86_64)
1810 static int argreg[SUPPORTED_PERSONALITIES][MAX_ARGS] = {
1811 {RDI,RSI,RDX,R10,R8,R9}, /* x86-64 ABI */
1812 {RBX,RCX,RDX,RDX,RSI,RDI,RBP} /* i386 ABI */
1815 if (tcp->scno >= 0 && tcp->scno < nsyscalls && sysent[tcp->scno].nargs != -1)
1816 tcp->u_nargs = sysent[tcp->scno].nargs;
1818 tcp->u_nargs = MAX_ARGS;
1819 for (i = 0; i < tcp->u_nargs; i++) {
1820 if (upeek(pid, argreg[current_personality][i]*8, &tcp->u_arg[i]) < 0)
1824 #else /* Other architecture (like i386) (32bits specific) */
1827 if (tcp->scno >= 0 && tcp->scno < nsyscalls && sysent[tcp->scno].nargs != -1)
1828 tcp->u_nargs = sysent[tcp->scno].nargs;
1830 tcp->u_nargs = MAX_ARGS;
1831 for (i = 0; i < tcp->u_nargs; i++) {
1832 if (upeek(pid, i*4, &tcp->u_arg[i]) < 0)
1841 if (tcp->scno >= 0 && tcp->scno < nsyscalls && sysent[tcp->scno].nargs != -1)
1842 tcp->u_nargs = sysent[tcp->scno].nargs;
1844 tcp->u_nargs = MAX_ARGS;
1845 for (i = 0; i < tcp->u_nargs; i++) {
1848 if (upeek(pid, uoff(u_arg[0]) +
1849 (i*sizeof(u->u_arg[0])), &tcp->u_arg[i]) < 0)
1857 * SGI is broken: even though it has pr_sysarg, it doesn't
1858 * set them on system call entry. Get a clue.
1860 if (tcp->scno >= 0 && tcp->scno < nsyscalls && sysent[tcp->scno].nargs != -1)
1861 tcp->u_nargs = sysent[tcp->scno].nargs;
1863 tcp->u_nargs = tcp->status.pr_nsysarg;
1864 if (tcp->u_nargs > 4) {
1865 memcpy(tcp->u_arg, &tcp->status.pr_reg[CTX_A0],
1866 4*sizeof(tcp->u_arg[0]));
1867 umoven(tcp, tcp->status.pr_reg[CTX_SP] + 16,
1868 (tcp->u_nargs - 4)*sizeof(tcp->u_arg[0]), (char *) (tcp->u_arg + 4));
1871 memcpy(tcp->u_arg, &tcp->status.pr_reg[CTX_A0],
1872 tcp->u_nargs*sizeof(tcp->u_arg[0]));
1876 * Like SGI, UnixWare doesn't set pr_sysarg until system call exit
1878 if (tcp->scno >= 0 && tcp->scno < nsyscalls && sysent[tcp->scno].nargs != -1)
1879 tcp->u_nargs = sysent[tcp->scno].nargs;
1881 tcp->u_nargs = tcp->status.pr_lwp.pr_nsysarg;
1882 umoven(tcp, tcp->status.PR_REG[UESP] + 4,
1883 tcp->u_nargs*sizeof(tcp->u_arg[0]), (char *) tcp->u_arg);
1884 #elif defined (HAVE_PR_SYSCALL)
1885 if (tcp->scno >= 0 && tcp->scno < nsyscalls && sysent[tcp->scno].nargs != -1)
1886 tcp->u_nargs = sysent[tcp->scno].nargs;
1888 tcp->u_nargs = tcp->status.pr_nsysarg;
1891 for (i = 0; i < tcp->u_nargs; i++)
1892 tcp->u_arg[i] = tcp->status.pr_sysarg[i];
1894 #elif defined (I386)
1895 if (tcp->scno >= 0 && tcp->scno < nsyscalls && sysent[tcp->scno].nargs != -1)
1896 tcp->u_nargs = sysent[tcp->scno].nargs;
1899 umoven(tcp, tcp->status.PR_REG[UESP] + 4,
1900 tcp->u_nargs*sizeof(tcp->u_arg[0]), (char *) tcp->u_arg);
1902 I DONT KNOW WHAT TO DO
1903 #endif /* !HAVE_PR_SYSCALL */
1906 if (tcp->scno >= 0 && tcp->scno < nsyscalls &&
1907 sysent[tcp->scno].nargs > tcp->status.val)
1908 tcp->u_nargs = sysent[tcp->scno].nargs;
1910 tcp->u_nargs = tcp->status.val;
1911 if (tcp->u_nargs < 0)
1913 if (tcp->u_nargs > MAX_ARGS)
1914 tcp->u_nargs = MAX_ARGS;
1915 switch(regs.r_eax) {
1917 pread(tcp->pfd, &tcp->u_arg, tcp->u_nargs * sizeof(unsigned long),
1918 regs.r_esp + sizeof(int) + sizeof(quad_t));
1921 pread(tcp->pfd, &tcp->u_arg, tcp->u_nargs * sizeof(unsigned long),
1922 regs.r_esp + 2 * sizeof(int));
1925 pread(tcp->pfd, &tcp->u_arg, tcp->u_nargs * sizeof(unsigned long),
1926 regs.r_esp + sizeof(int));
1929 #endif /* FREEBSD */
1941 /* Measure the exit time as early as possible to avoid errors. */
1942 if (dtime && (tcp->flags & TCB_INSYSCALL))
1943 gettimeofday(&tv, NULL);
1945 res = get_scno(tcp);
1949 res = syscall_fixup(tcp);
1953 if (tcp->flags & TCB_INSYSCALL) {
1955 res = get_error(tcp);
1959 internal_syscall(tcp);
1960 if (tcp->scno >= 0 && tcp->scno < nsyscalls &&
1961 !(qual_flags[tcp->scno] & QUAL_TRACE)) {
1962 tcp->flags &= ~TCB_INSYSCALL;
1966 if (tcp->flags & TCB_REPRINT) {
1969 if (tcp->scno >= nsyscalls || tcp->scno < 0)
1970 tprintf("syscall_%lu", tcp->scno);
1972 tprintf("%s", sysent[tcp->scno].sys_name);
1973 tprintf(" resumed> ");
1976 if (cflag && tcp->scno < nsyscalls && tcp->scno >= 0) {
1977 call_count[tcp->scno]++;
1979 error_count[tcp->scno]++;
1980 tv_sub(&tv, &tv, &tcp->etime);
1982 if (tv_cmp(&tv, &tcp->dtime) > 0) {
1983 static struct timeval one_tick =
1984 { 0, 1000000 / HZ };
1986 if (tv_nz(&tcp->dtime))
1988 else if (tv_cmp(&tv, &one_tick) > 0) {
1989 if (tv_cmp(&shortest, &one_tick) < 0)
1996 if (tv_cmp(&tv, &shortest) < 0)
1998 tv_add(&tv_count[tcp->scno],
1999 &tv_count[tcp->scno], &tv);
2000 tcp->flags &= ~TCB_INSYSCALL;
2004 if (tcp->scno >= nsyscalls || tcp->scno < 0
2005 || (qual_flags[tcp->scno] & QUAL_RAW))
2006 sys_res = printargs(tcp);
2008 if (not_failing_only && tcp->u_error)
2009 return 0; /* ignore failed syscalls */
2010 sys_res = (*sysent[tcp->scno].sys_func)(tcp);
2012 u_error = tcp->u_error;
2015 if (tcp->scno >= nsyscalls || tcp->scno < 0 ||
2016 qual_flags[tcp->scno] & QUAL_RAW) {
2018 tprintf("= -1 (errno %ld)", u_error);
2020 tprintf("= %#lx", tcp->u_rval);
2022 else if (!(sys_res & RVAL_NONE) && u_error) {
2026 tprintf("= ? ERESTARTSYS (To be restarted)");
2028 case ERESTARTNOINTR:
2029 tprintf("= ? ERESTARTNOINTR (To be restarted)");
2031 case ERESTARTNOHAND:
2032 tprintf("= ? ERESTARTNOHAND (To be restarted)");
2038 tprintf("E??? (errno %ld)", u_error);
2039 else if (u_error < nerrnos)
2040 tprintf("%s (%s)", errnoent[u_error],
2043 tprintf("ERRNO_%ld (%s)", u_error,
2049 if (sys_res & RVAL_NONE)
2052 switch (sys_res & RVAL_MASK) {
2054 tprintf("= %#lx", tcp->u_rval);
2057 tprintf("= %#lo", tcp->u_rval);
2060 tprintf("= %lu", tcp->u_rval);
2063 tprintf("= %ld", tcp->u_rval);
2065 #ifdef HAVE_LONG_LONG
2067 tprintf("= %#llx", tcp->u_lrval);
2070 tprintf("= %#llo", tcp->u_lrval);
2072 case RVAL_LUDECIMAL:
2073 tprintf("= %llu", tcp->u_lrval);
2076 tprintf("= %lld", tcp->u_lrval);
2081 "invalid rval format\n");
2085 if ((sys_res & RVAL_STR) && tcp->auxstr)
2086 tprintf(" (%s)", tcp->auxstr);
2089 tv_sub(&tv, &tv, &tcp->etime);
2090 tprintf(" <%ld.%06ld>",
2091 (long) tv.tv_sec, (long) tv.tv_usec);
2096 if (fflush(tcp->outf) == EOF)
2098 tcp->flags &= ~TCB_INSYSCALL;
2102 /* Entering system call */
2103 res = syscall_enter(tcp);
2107 switch (tcp->scno + NR_SYSCALL_BASE) {
2109 #if !defined (ALPHA) && !defined(SPARC) && !defined(MIPS) && !defined(HPPA) && !defined(X86_64)
2110 case SYS_socketcall:
2111 decode_subcall(tcp, SYS_socket_subcall,
2112 SYS_socket_nsubcalls, deref_style);
2115 decode_subcall(tcp, SYS_ipc_subcall,
2116 SYS_ipc_nsubcalls, shift_style);
2118 #endif /* !ALPHA && !MIPS && !SPARC && !HPPA && !X86_64 */
2120 case SYS_socketcall:
2121 sparc_socket_decode (tcp);
2126 #ifdef SYS_pgrpsys_subcall
2128 decode_subcall(tcp, SYS_pgrpsys_subcall,
2129 SYS_pgrpsys_nsubcalls, shift_style);
2131 #endif /* SYS_pgrpsys_subcall */
2132 #ifdef SYS_sigcall_subcall
2134 decode_subcall(tcp, SYS_sigcall_subcall,
2135 SYS_sigcall_nsubcalls, mask_style);
2137 #endif /* SYS_sigcall_subcall */
2139 decode_subcall(tcp, SYS_msgsys_subcall,
2140 SYS_msgsys_nsubcalls, shift_style);
2143 decode_subcall(tcp, SYS_shmsys_subcall,
2144 SYS_shmsys_nsubcalls, shift_style);
2147 decode_subcall(tcp, SYS_semsys_subcall,
2148 SYS_semsys_nsubcalls, shift_style);
2152 decode_subcall(tcp, SYS_utssys_subcall,
2153 SYS_utssys_nsubcalls, shift_style);
2157 decode_subcall(tcp, SYS_sysfs_subcall,
2158 SYS_sysfs_nsubcalls, shift_style);
2161 decode_subcall(tcp, SYS_spcall_subcall,
2162 SYS_spcall_nsubcalls, shift_style);
2164 #ifdef SYS_context_subcall
2166 decode_subcall(tcp, SYS_context_subcall,
2167 SYS_context_nsubcalls, shift_style);
2169 #endif /* SYS_context_subcall */
2170 #ifdef SYS_door_subcall
2172 decode_subcall(tcp, SYS_door_subcall,
2173 SYS_door_nsubcalls, door_style);
2175 #endif /* SYS_door_subcall */
2176 #ifdef SYS_kaio_subcall
2178 decode_subcall(tcp, SYS_kaio_subcall,
2179 SYS_kaio_nsubcalls, shift_style);
2187 decode_subcall(tcp, 0, 0, table_style);
2192 decode_subcall(tcp, SYS_semsys_subcall,
2193 SYS_semsys_nsubcalls, shift_style);
2196 decode_subcall(tcp, SYS_msgsys_subcall,
2197 SYS_msgsys_nsubcalls, shift_style);
2200 decode_subcall(tcp, SYS_shmsys_subcall,
2201 SYS_shmsys_nsubcalls, shift_style);
2206 internal_syscall(tcp);
2207 if (tcp->scno >=0 && tcp->scno < nsyscalls && !(qual_flags[tcp->scno] & QUAL_TRACE)) {
2208 tcp->flags |= TCB_INSYSCALL;
2213 gettimeofday(&tcp->etime, NULL);
2214 tcp->flags |= TCB_INSYSCALL;
2219 tcp->flags &= ~TCB_REPRINT;
2221 if (tcp->scno >= nsyscalls || tcp->scno < 0)
2222 tprintf("syscall_%lu(", tcp->scno);
2224 tprintf("%s(", sysent[tcp->scno].sys_name);
2225 if (tcp->scno >= nsyscalls || tcp->scno < 0 ||
2226 ((qual_flags[tcp->scno] & QUAL_RAW) && tcp->scno != SYS_exit))
2227 sys_res = printargs(tcp);
2229 sys_res = (*sysent[tcp->scno].sys_func)(tcp);
2230 if (fflush(tcp->outf) == EOF)
2232 tcp->flags |= TCB_INSYSCALL;
2233 /* Measure the entrance time as late as possible to avoid errors. */
2235 gettimeofday(&tcp->etime, NULL);
2243 if (entering(tcp)) {
2246 for (i = 0; i < tcp->u_nargs; i++)
2247 tprintf("%s%#lx", i ? ", " : "", tcp->u_arg[i]);
2261 if (ptrace(PTRACE_GETREGS,tcp->pid,(char *)®s,0) < 0)
2268 if (upeek(tcp->pid, uoff(u_rval2), &val) < 0)
2274 val = tcp->status.PR_REG[R_O1];
2277 val = tcp->status.PR_REG[EDX];
2280 val = tcp->status.PR_REG[RDX];
2283 val = tcp->status.PR_REG[CTX_V1];
2288 pread(tcp->pfd_reg, ®s, sizeof(regs), 0);
2295 * Apparently, indirect system calls have already be converted by ptrace(2),
2296 * so if you see "indir" this program has gone astray.
2304 if (entering(tcp)) {
2305 if ((scno = tcp->u_arg[0]) > nsyscalls) {
2306 fprintf(stderr, "Bogus syscall: %u\n", scno);
2309 nargs = sysent[scno].nargs;
2310 tprintf("%s", sysent[scno].sys_name);
2311 for (i = 0; i < nargs; i++)
2312 tprintf(", %#lx", tcp->u_arg[i+1]);
2322 return -tv_cmp(&tv_count[*((int *) a)], &tv_count[*((int *) b)]);
2330 return strcmp(sysent[*((int *) a)].sys_name,
2331 sysent[*((int *) b)].sys_name);
2339 int m = call_count[*((int *) a)], n = call_count[*((int *) b)];
2341 return (m < n) ? 1 : (m > n) ? -1 : 0;
2344 static int (*sortfun)();
2345 static struct timeval overhead = { -1, -1 };
2351 if (strcmp(sortby, "time") == 0)
2353 else if (strcmp(sortby, "calls") == 0)
2354 sortfun = count_cmp;
2355 else if (strcmp(sortby, "name") == 0)
2356 sortfun = syscall_cmp;
2357 else if (strcmp(sortby, "nothing") == 0)
2360 fprintf(stderr, "invalid sortby: `%s'\n", sortby);
2365 void set_overhead(n)
2368 overhead.tv_sec = n / 1000000;
2369 overhead.tv_usec = n % 1000000;
2377 int call_cum, error_cum;
2378 struct timeval tv_cum, dtv;
2380 char *dashes = "-------------------------";
2383 call_cum = error_cum = tv_cum.tv_sec = tv_cum.tv_usec = 0;
2384 if (overhead.tv_sec == -1) {
2385 tv_mul(&overhead, &shortest, 8);
2386 tv_div(&overhead, &overhead, 10);
2388 for (i = 0; i < nsyscalls; i++) {
2389 sorted_count[i] = i;
2390 if (call_count[i] == 0)
2392 tv_mul(&dtv, &overhead, call_count[i]);
2393 tv_sub(&tv_count[i], &tv_count[i], &dtv);
2394 call_cum += call_count[i];
2395 error_cum += error_count[i];
2396 tv_add(&tv_cum, &tv_cum, &tv_count[i]);
2399 qsort((void *) sorted_count, nsyscalls, sizeof(int), sortfun);
2400 fprintf(outf, "%6.6s %11.11s %11.11s %9.9s %9.9s %s\n",
2401 "% time", "seconds", "usecs/call",
2402 "calls", "errors", "syscall");
2403 fprintf(outf, "%6.6s %11.11s %11.11s %9.9s %9.9s %-16.16s\n",
2404 dashes, dashes, dashes, dashes, dashes, dashes);
2405 for (i = 0; i < nsyscalls; i++) {
2406 j = sorted_count[i];
2407 if (call_count[j] == 0)
2409 tv_div(&dtv, &tv_count[j], call_count[j]);
2411 sprintf(error_str, "%d", error_count[j]);
2413 error_str[0] = '\0';
2414 percent = 100.0*tv_float(&tv_count[j])/tv_float(&tv_cum);
2415 fprintf(outf, "%6.2f %4ld.%06ld %11ld %9d %9.9s %s\n",
2416 percent, (long) tv_count[j].tv_sec,
2417 (long) tv_count[j].tv_usec,
2418 (long) 1000000 * dtv.tv_sec + dtv.tv_usec,
2419 call_count[j], error_str, sysent[j].sys_name);
2421 fprintf(outf, "%6.6s %11.11s %11.11s %9.9s %9.9s %-16.16s\n",
2422 dashes, dashes, dashes, dashes, dashes, dashes);
2424 sprintf(error_str, "%d", error_cum);
2426 error_str[0] = '\0';
2427 fprintf(outf, "%6.6s %4ld.%06ld %11.11s %9d %9.9s %s\n",
2428 "100.00", (long) tv_cum.tv_sec, (long) tv_cum.tv_usec, "",
2429 call_cum, error_str, "total");