#ifdef HAVE_SYS_REG_H
# include <sys/reg.h>
-# ifndef PTRACE_PEEKUSR
-# define PTRACE_PEEKUSR PTRACE_PEEKUSER
-# endif
#elif defined(HAVE_LINUX_PTRACE_H)
# undef PTRACE_SYSCALL
# ifdef HAVE_STRUCT_IA64_FPREG
# ifdef HAVE_STRUCT_PT_ALL_USER_REGS
# define pt_all_user_regs XXX_pt_all_user_regs
# endif
+# ifdef HAVE_STRUCT_PTRACE_PEEKSIGINFO_ARGS
+# define ptrace_peeksiginfo_args XXX_ptrace_peeksiginfo_args
+# endif
# include <linux/ptrace.h>
+# undef ptrace_peeksiginfo_args
# undef ia64_fpreg
# undef pt_all_user_regs
#endif
# include <asm/rse.h>
#endif
-#if defined(AARCH64)
-# include <asm/ptrace.h>
-# include <sys/uio.h>
+/* for struct iovec */
+#include <sys/uio.h>
+/* for NT_PRSTATUS */
+#ifdef HAVE_ELF_H
# include <elf.h>
#endif
-#if defined(TILE)
-# ifndef PT_FLAGS_COMPAT
-# define PT_FLAGS_COMPAT 0x10000 /* from Linux 3.8 on */
-# endif
+#if defined(AARCH64)
+# include <asm/ptrace.h>
#endif
-#ifndef ERESTARTSYS
-# define ERESTARTSYS 512
-#endif
-#ifndef ERESTARTNOINTR
-# define ERESTARTNOINTR 513
-#endif
-#ifndef ERESTARTNOHAND
-# define ERESTARTNOHAND 514 /* restart if no handler */
-#endif
-#ifndef ERESTART_RESTARTBLOCK
-# define ERESTART_RESTARTBLOCK 516 /* restart by calling sys_restart_syscall */
+#if defined(XTENSA)
+# include <asm/ptrace.h>
#endif
#ifndef NSIG
# warning: NSIG is not defined, using 32
# define NSIG 32
#endif
-#ifdef ARM
-/* Ugh. Is this really correct? ARM has no RT signals?! */
-# undef NSIG
-# define NSIG 32
-#endif
#include "syscall.h"
#define TM TRACE_MEMORY
#define NF SYSCALL_NEVER_FAILS
#define MA MAX_ARGS
+#define SI STACKTRACE_INVALIDATE_CACHE
+#define SE STACKTRACE_CAPTURE_ON_ENTER
-static const struct sysent sysent0[] = {
+const struct_sysent sysent0[] = {
#include "syscallent.h"
};
-#if SUPPORTED_PERSONALITIES >= 2
-static const struct sysent sysent1[] = {
+#if SUPPORTED_PERSONALITIES > 1
+static const struct_sysent sysent1[] = {
# include "syscallent1.h"
};
#endif
-#if SUPPORTED_PERSONALITIES >= 3
-static const struct sysent sysent2[] = {
+#if SUPPORTED_PERSONALITIES > 2
+static const struct_sysent sysent2[] = {
# include "syscallent2.h"
};
#endif
#undef TM
#undef NF
#undef MA
+#undef SI
+#undef SE
/*
* `ioctlent.h' may be generated from `ioctlent.raw' by the auxiliary
* in "/usr/include".
*/
-static const char *const errnoent0[] = {
+const char *const errnoent0[] = {
#include "errnoent.h"
};
-static const char *const signalent0[] = {
+const char *const signalent0[] = {
#include "signalent.h"
};
-static const struct ioctlent ioctlent0[] = {
+const struct_ioctlent ioctlent0[] = {
#include "ioctlent.h"
};
-enum { nsyscalls0 = ARRAY_SIZE(sysent0) };
-enum { nerrnos0 = ARRAY_SIZE(errnoent0) };
-enum { nsignals0 = ARRAY_SIZE(signalent0) };
-enum { nioctlents0 = ARRAY_SIZE(ioctlent0) };
-int qual_flags0[MAX_QUALS];
-#if SUPPORTED_PERSONALITIES >= 2
+#if SUPPORTED_PERSONALITIES > 1
static const char *const errnoent1[] = {
# include "errnoent1.h"
};
static const char *const signalent1[] = {
# include "signalent1.h"
};
-static const struct ioctlent ioctlent1[] = {
+static const struct_ioctlent ioctlent1[] = {
# include "ioctlent1.h"
};
-enum { nsyscalls1 = ARRAY_SIZE(sysent1) };
-enum { nerrnos1 = ARRAY_SIZE(errnoent1) };
-enum { nsignals1 = ARRAY_SIZE(signalent1) };
-enum { nioctlents1 = ARRAY_SIZE(ioctlent1) };
-int qual_flags1[MAX_QUALS];
#endif
-#if SUPPORTED_PERSONALITIES >= 3
+#if SUPPORTED_PERSONALITIES > 2
static const char *const errnoent2[] = {
# include "errnoent2.h"
};
static const char *const signalent2[] = {
# include "signalent2.h"
};
-static const struct ioctlent ioctlent2[] = {
+static const struct_ioctlent ioctlent2[] = {
# include "ioctlent2.h"
};
-enum { nsyscalls2 = ARRAY_SIZE(sysent2) };
-enum { nerrnos2 = ARRAY_SIZE(errnoent2) };
-enum { nsignals2 = ARRAY_SIZE(signalent2) };
-enum { nioctlents2 = ARRAY_SIZE(ioctlent2) };
-int qual_flags2[MAX_QUALS];
#endif
-const struct sysent *sysent = sysent0;
+enum {
+ nsyscalls0 = ARRAY_SIZE(sysent0)
+#if SUPPORTED_PERSONALITIES > 1
+ , nsyscalls1 = ARRAY_SIZE(sysent1)
+# if SUPPORTED_PERSONALITIES > 2
+ , nsyscalls2 = ARRAY_SIZE(sysent2)
+# endif
+#endif
+};
+
+enum {
+ nerrnos0 = ARRAY_SIZE(errnoent0)
+#if SUPPORTED_PERSONALITIES > 1
+ , nerrnos1 = ARRAY_SIZE(errnoent1)
+# if SUPPORTED_PERSONALITIES > 2
+ , nerrnos2 = ARRAY_SIZE(errnoent2)
+# endif
+#endif
+};
+
+enum {
+ nsignals0 = ARRAY_SIZE(signalent0)
+#if SUPPORTED_PERSONALITIES > 1
+ , nsignals1 = ARRAY_SIZE(signalent1)
+# if SUPPORTED_PERSONALITIES > 2
+ , nsignals2 = ARRAY_SIZE(signalent2)
+# endif
+#endif
+};
+
+enum {
+ nioctlents0 = ARRAY_SIZE(ioctlent0)
+#if SUPPORTED_PERSONALITIES > 1
+ , nioctlents1 = ARRAY_SIZE(ioctlent1)
+# if SUPPORTED_PERSONALITIES > 2
+ , nioctlents2 = ARRAY_SIZE(ioctlent2)
+# endif
+#endif
+};
+
+#if SUPPORTED_PERSONALITIES > 1
+const struct_sysent *sysent = sysent0;
const char *const *errnoent = errnoent0;
const char *const *signalent = signalent0;
-const struct ioctlent *ioctlent = ioctlent0;
+const struct_ioctlent *ioctlent = ioctlent0;
+#endif
unsigned nsyscalls = nsyscalls0;
unsigned nerrnos = nerrnos0;
unsigned nsignals = nsignals0;
unsigned nioctlents = nioctlents0;
-int *qual_flags = qual_flags0;
+unsigned num_quals;
+qualbits_t *qual_vec[SUPPORTED_PERSONALITIES];
+
+static const unsigned nsyscall_vec[SUPPORTED_PERSONALITIES] = {
+ nsyscalls0,
+#if SUPPORTED_PERSONALITIES > 1
+ nsyscalls1,
+#endif
+#if SUPPORTED_PERSONALITIES > 2
+ nsyscalls2,
+#endif
+};
+static const struct_sysent *const sysent_vec[SUPPORTED_PERSONALITIES] = {
+ sysent0,
#if SUPPORTED_PERSONALITIES > 1
-int current_personality;
+ sysent1,
+#endif
+#if SUPPORTED_PERSONALITIES > 2
+ sysent2,
+#endif
+};
-const int personality_wordsize[SUPPORTED_PERSONALITIES] = {
+enum {
+ MAX_NSYSCALLS1 = (nsyscalls0
+#if SUPPORTED_PERSONALITIES > 1
+ > nsyscalls1 ? nsyscalls0 : nsyscalls1
+#endif
+ ),
+ MAX_NSYSCALLS2 = (MAX_NSYSCALLS1
+#if SUPPORTED_PERSONALITIES > 2
+ > nsyscalls2 ? MAX_NSYSCALLS1 : nsyscalls2
+#endif
+ ),
+ MAX_NSYSCALLS = MAX_NSYSCALLS2,
+ /* We are ready for arches with up to 255 signals,
+ * even though the largest known signo is on MIPS and it is 128.
+ * The number of existing syscalls on all arches is
+ * larger that 255 anyway, so it is just a pedantic matter.
+ */
+ MIN_QUALS = MAX_NSYSCALLS > 255 ? MAX_NSYSCALLS : 255
+};
+
+#if SUPPORTED_PERSONALITIES > 1
+unsigned current_personality;
+
+# ifndef current_wordsize
+unsigned current_wordsize;
+static const int personality_wordsize[SUPPORTED_PERSONALITIES] = {
PERSONALITY0_WORDSIZE,
PERSONALITY1_WORDSIZE,
# if SUPPORTED_PERSONALITIES > 2
PERSONALITY2_WORDSIZE,
# endif
};
+# endif
void
set_personality(int personality)
{
+ nsyscalls = nsyscall_vec[personality];
+ sysent = sysent_vec[personality];
+
switch (personality) {
case 0:
errnoent = errnoent0;
nerrnos = nerrnos0;
- sysent = sysent0;
- nsyscalls = nsyscalls0;
ioctlent = ioctlent0;
nioctlents = nioctlents0;
signalent = signalent0;
nsignals = nsignals0;
- qual_flags = qual_flags0;
break;
case 1:
errnoent = errnoent1;
nerrnos = nerrnos1;
- sysent = sysent1;
- nsyscalls = nsyscalls1;
ioctlent = ioctlent1;
nioctlents = nioctlents1;
signalent = signalent1;
nsignals = nsignals1;
- qual_flags = qual_flags1;
break;
-# if SUPPORTED_PERSONALITIES >= 3
+# if SUPPORTED_PERSONALITIES > 2
case 2:
errnoent = errnoent2;
nerrnos = nerrnos2;
- sysent = sysent2;
- nsyscalls = nsyscalls2;
ioctlent = ioctlent2;
nioctlents = nioctlents2;
signalent = signalent2;
nsignals = nsignals2;
- qual_flags = qual_flags2;
break;
# endif
}
current_personality = personality;
+# ifndef current_wordsize
+ current_wordsize = personality_wordsize[personality];
+# endif
}
static void
-update_personality(struct tcb *tcp, int personality)
+update_personality(struct tcb *tcp, unsigned int personality)
{
if (personality == current_personality)
return;
}
# elif defined(AARCH64)
if (!qflag) {
- static const char *const names[] = {"32-bit ARM", "AArch64"};
+ static const char *const names[] = {"32-bit", "AArch64"};
fprintf(stderr, "[ Process PID=%d runs in %s mode. ]\n",
tcp->pid, names[personality]);
}
}
#endif
-static int qual_syscall(), qual_signal(), qual_fault(), qual_desc();
+static int qual_syscall(), qual_signal(), qual_desc();
static const struct qual_options {
- int bitflag;
+ unsigned int bitflag;
const char *option_name;
int (*qualify)(const char *, int, int);
const char *argument_name;
{ QUAL_SIGNAL, "signal", qual_signal, "signal" },
{ QUAL_SIGNAL, "signals", qual_signal, "signal" },
{ QUAL_SIGNAL, "s", qual_signal, "signal" },
- { QUAL_FAULT, "fault", qual_fault, "fault" },
- { QUAL_FAULT, "faults", qual_fault, "fault" },
- { QUAL_FAULT, "m", qual_fault, "fault" },
{ QUAL_READ, "read", qual_desc, "descriptor" },
{ QUAL_READ, "reads", qual_desc, "descriptor" },
{ QUAL_READ, "r", qual_desc, "descriptor" },
};
static void
-qualify_one(int n, int bitflag, int not, int pers)
+reallocate_qual(const unsigned int n)
{
- if (pers == 0 || pers < 0) {
- if (not)
- qual_flags0[n] &= ~bitflag;
- else
- qual_flags0[n] |= bitflag;
- }
+ unsigned p;
+ qualbits_t *qp;
+ for (p = 0; p < SUPPORTED_PERSONALITIES; p++) {
+ qp = qual_vec[p] = realloc(qual_vec[p], n * sizeof(qualbits_t));
+ if (!qp)
+ die_out_of_memory();
+ memset(&qp[num_quals], 0, (n - num_quals) * sizeof(qualbits_t));
+ }
+ num_quals = n;
+}
-#if SUPPORTED_PERSONALITIES >= 2
- if (pers == 1 || pers < 0) {
- if (not)
- qual_flags1[n] &= ~bitflag;
- else
- qual_flags1[n] |= bitflag;
- }
-#endif
+static void
+qualify_one(const unsigned int n, unsigned int bitflag, const int not, const int pers)
+{
+ int p;
-#if SUPPORTED_PERSONALITIES >= 3
- if (pers == 2 || pers < 0) {
- if (not)
- qual_flags2[n] &= ~bitflag;
- else
- qual_flags2[n] |= bitflag;
+ if (num_quals <= n)
+ reallocate_qual(n + 1);
+
+ for (p = 0; p < SUPPORTED_PERSONALITIES; p++) {
+ if (pers == p || pers < 0) {
+ if (not)
+ qual_vec[p][n] &= ~bitflag;
+ else
+ qual_vec[p][n] |= bitflag;
+ }
}
-#endif
}
static int
-qual_syscall(const char *s, int bitflag, int not)
+qual_syscall(const char *s, const unsigned int bitflag, const int not)
{
- int i;
+ int p;
+ unsigned int i;
int rc = -1;
if (*s >= '0' && *s <= '9') {
- int i = string_to_uint(s);
- if (i < 0 || i >= MAX_QUALS)
+ i = string_to_uint(s);
+ if (i >= MAX_NSYSCALLS)
return -1;
qualify_one(i, bitflag, not, -1);
return 0;
}
- for (i = 0; i < nsyscalls0; i++)
- if (sysent0[i].sys_name &&
- strcmp(s, sysent0[i].sys_name) == 0) {
- qualify_one(i, bitflag, not, 0);
- rc = 0;
- }
-
-#if SUPPORTED_PERSONALITIES >= 2
- for (i = 0; i < nsyscalls1; i++)
- if (sysent1[i].sys_name &&
- strcmp(s, sysent1[i].sys_name) == 0) {
- qualify_one(i, bitflag, not, 1);
- rc = 0;
- }
-#endif
-#if SUPPORTED_PERSONALITIES >= 3
- for (i = 0; i < nsyscalls2; i++)
- if (sysent2[i].sys_name &&
- strcmp(s, sysent2[i].sys_name) == 0) {
- qualify_one(i, bitflag, not, 2);
- rc = 0;
+ for (p = 0; p < SUPPORTED_PERSONALITIES; p++) {
+ for (i = 0; i < nsyscall_vec[p]; i++) {
+ if (sysent_vec[p][i].sys_name
+ && strcmp(s, sysent_vec[p][i].sys_name) == 0
+ ) {
+ qualify_one(i, bitflag, not, p);
+ rc = 0;
+ }
}
-#endif
+ }
return rc;
}
static int
-qual_signal(const char *s, int bitflag, int not)
+qual_signal(const char *s, const unsigned int bitflag, const int not)
{
- int i;
+ unsigned int i;
if (*s >= '0' && *s <= '9') {
int signo = string_to_uint(s);
- if (signo < 0 || signo >= MAX_QUALS)
+ if (signo < 0 || signo > 255)
return -1;
qualify_one(signo, bitflag, not, -1);
return 0;
}
static int
-qual_fault(const char *s, int bitflag, int not)
-{
- return -1;
-}
-
-static int
-qual_desc(const char *s, int bitflag, int not)
+qual_desc(const char *s, const unsigned int bitflag, const int not)
{
if (*s >= '0' && *s <= '9') {
int desc = string_to_uint(s);
- if (desc < 0 || desc >= MAX_QUALS)
+ if (desc < 0 || desc > 0x7fff) /* paranoia */
return -1;
qualify_one(desc, bitflag, not, -1);
return 0;
qualify(const char *s)
{
const struct qual_options *opt;
- int not;
char *copy;
const char *p;
- int i, n;
+ int not;
+ unsigned int i;
+
+ if (num_quals == 0)
+ reallocate_qual(MIN_QUALS);
opt = &qual_options[0];
for (i = 0; (p = qual_options[i].option_name); i++) {
- n = strlen(p);
- if (strncmp(s, p, n) == 0 && s[n] == '=') {
+ unsigned int len = strlen(p);
+ if (strncmp(s, p, len) == 0 && s[len] == '=') {
opt = &qual_options[i];
- s += n + 1;
+ s += len + 1;
break;
}
}
s = "all";
}
if (strcmp(s, "all") == 0) {
- for (i = 0; i < MAX_QUALS; i++) {
+ for (i = 0; i < num_quals; i++) {
qualify_one(i, opt->bitflag, not, -1);
}
return;
}
- for (i = 0; i < MAX_QUALS; i++) {
+ for (i = 0; i < num_quals; i++) {
qualify_one(i, opt->bitflag, !not, -1);
}
copy = strdup(s);
if (!copy)
die_out_of_memory();
for (p = strtok(copy, ","); p; p = strtok(NULL, ",")) {
+ int n;
if (opt->bitflag == QUAL_TRACE && (n = lookup_class(p)) > 0) {
- for (i = 0; i < nsyscalls0; i++)
- if (sysent0[i].sys_flags & n)
- qualify_one(i, opt->bitflag, not, 0);
-
-#if SUPPORTED_PERSONALITIES >= 2
- for (i = 0; i < nsyscalls1; i++)
- if (sysent1[i].sys_flags & n)
- qualify_one(i, opt->bitflag, not, 1);
-#endif
-
-#if SUPPORTED_PERSONALITIES >= 3
- for (i = 0; i < nsyscalls2; i++)
- if (sysent2[i].sys_flags & n)
- qualify_one(i, opt->bitflag, not, 2);
-#endif
-
+ unsigned pers;
+ for (pers = 0; pers < SUPPORTED_PERSONALITIES; pers++) {
+ for (i = 0; i < nsyscall_vec[pers]; i++)
+ if (sysent_vec[pers][i].sys_flags & n)
+ qualify_one(i, opt->bitflag, not, pers);
+ }
continue;
}
if (opt->qualify(p, opt->bitflag, not)) {
decode_socket_subcall(struct tcb *tcp)
{
unsigned long addr;
- unsigned int i, size;
+ unsigned int i, n, size;
if (tcp->u_arg[0] < 0 || tcp->u_arg[0] >= SYS_socket_nsubcalls)
return;
tcp->scno = SYS_socket_subcall + tcp->u_arg[0];
+ tcp->qual_flg = qual_flags[tcp->scno];
+ tcp->s_ent = &sysent[tcp->scno];
addr = tcp->u_arg[1];
- tcp->u_nargs = sysent[tcp->scno].nargs;
size = current_wordsize;
- for (i = 0; i < tcp->u_nargs; ++i) {
+ n = tcp->s_ent->nargs;
+ for (i = 0; i < n; ++i) {
if (size == sizeof(int)) {
unsigned int arg;
if (umove(tcp, addr, &arg) < 0)
static void
decode_ipc_subcall(struct tcb *tcp)
{
- unsigned int i;
+ unsigned int i, n;
if (tcp->u_arg[0] < 0 || tcp->u_arg[0] >= SYS_ipc_nsubcalls)
return;
tcp->scno = SYS_ipc_subcall + tcp->u_arg[0];
- tcp->u_nargs = sysent[tcp->scno].nargs;
- for (i = 0; i < tcp->u_nargs; i++)
+ tcp->qual_flg = qual_flags[tcp->scno];
+ tcp->s_ent = &sysent[tcp->scno];
+ n = tcp->s_ent->nargs;
+ for (i = 0; i < n; i++)
tcp->u_arg[i] = tcp->u_arg[i + 1];
}
#endif
{
if (entering(tcp)) {
int i;
-
- for (i = 0; i < tcp->u_nargs; i++)
+ int n = tcp->s_ent->nargs;
+ for (i = 0; i < n; i++)
tprintf("%s%#lx", i ? ", " : "", tcp->u_arg[i]);
}
return 0;
{
if (entering(tcp)) {
int i;
-
- for (i = 0; i < tcp->u_nargs; i++)
+ int n = tcp->s_ent->nargs;
+ for (i = 0; i < n; i++)
tprintf("%s%lu", i ? ", " : "", tcp->u_arg[i]);
}
return 0;
{
if (entering(tcp)) {
int i;
-
- for (i = 0; i < tcp->u_nargs; i++)
+ int n = tcp->s_ent->nargs;
+ for (i = 0; i < n; i++)
tprintf("%s%ld", i ? ", " : "", tcp->u_arg[i]);
}
return 0;
long val;
# if defined(SPARC) || defined(SPARC64)
- val = regs.u_regs[U_REG_O1];
+ val = sparc_regs.u_regs[U_REG_O1];
# elif defined(SH)
- if (upeek(tcp, 4*(REG_REG0+1), &val) < 0)
+ if (upeek(tcp->pid, 4*(REG_REG0+1), &val) < 0)
return -1;
# elif defined(IA64)
- if (upeek(tcp, PT_R9, &val) < 0)
+ if (upeek(tcp->pid, PT_R9, &val) < 0)
return -1;
# endif
}
#endif
-int
-is_restart_error(struct tcb *tcp)
-{
- switch (tcp->u_error) {
- case ERESTARTSYS:
- case ERESTARTNOINTR:
- case ERESTARTNOHAND:
- case ERESTART_RESTARTBLOCK:
- return 1;
- default:
- break;
- }
- return 0;
-}
-
#if defined(I386)
-struct pt_regs i386_regs;
+static struct user_regs_struct i386_regs;
+/* Cast suppresses signedness warning (.esp is long, not unsigned long) */
+uint32_t *const i386_esp_ptr = (uint32_t*)&i386_regs.esp;
+# define ARCH_REGS_FOR_GETREGSET i386_regs
#elif defined(X86_64) || defined(X32)
/*
- * On 32 bits, pt_regs and user_regs_struct are the same,
- * but on 64 bits, user_regs_struct has six more fields:
+ * On i386, pt_regs and user_regs_struct are the same,
+ * but on 64 bit x86, user_regs_struct has six more fields:
* fs_base, gs_base, ds, es, fs, gs.
* PTRACE_GETREGS fills them too, so struct pt_regs would overflow.
*/
-static struct user_regs_struct x86_64_regs;
+struct i386_user_regs_struct {
+ uint32_t ebx;
+ uint32_t ecx;
+ uint32_t edx;
+ uint32_t esi;
+ uint32_t edi;
+ uint32_t ebp;
+ uint32_t eax;
+ uint32_t xds;
+ uint32_t xes;
+ uint32_t xfs;
+ uint32_t xgs;
+ uint32_t orig_eax;
+ uint32_t eip;
+ uint32_t xcs;
+ uint32_t eflags;
+ uint32_t esp;
+ uint32_t xss;
+};
+static union {
+ struct user_regs_struct x86_64_r;
+ struct i386_user_regs_struct i386_r;
+} x86_regs_union;
+# define x86_64_regs x86_regs_union.x86_64_r
+# define i386_regs x86_regs_union.i386_r
+uint32_t *const i386_esp_ptr = &i386_regs.esp;
+static struct iovec x86_io = {
+ .iov_base = &x86_regs_union
+};
#elif defined(IA64)
-long ia32 = 0; /* not static */
+bool ia64_ia32mode = 0; /* not static */
static long ia64_r8, ia64_r10;
#elif defined(POWERPC)
-static long ppc_result;
+struct pt_regs ppc_regs;
#elif defined(M68K)
static long m68k_d0;
#elif defined(BFIN)
-static long r0;
+static long bfin_r0;
#elif defined(ARM)
struct pt_regs arm_regs; /* not static */
+# define ARCH_REGS_FOR_GETREGSET arm_regs
#elif defined(AARCH64)
-static struct user_pt_regs aarch64_regs;
-static struct arm_pt_regs arm_regs;
+static union {
+ struct user_pt_regs aarch64_r;
+ struct arm_pt_regs arm_r;
+} arm_regs_union;
+# define aarch64_regs arm_regs_union.aarch64_r
+# define arm_regs arm_regs_union.arm_r
static struct iovec aarch64_io = {
- .iov_base = &aarch64_regs
+ .iov_base = &arm_regs_union
};
#elif defined(ALPHA)
-static long r0;
+static long alpha_r0;
static long alpha_a3;
#elif defined(AVR32)
-static struct pt_regs regs;
+static struct pt_regs avr32_regs;
#elif defined(SPARC) || defined(SPARC64)
-struct pt_regs regs; /* not static */
+struct pt_regs sparc_regs; /* not static */
#elif defined(LINUX_MIPSN32)
-static long long a3;
-static long long r2;
+static long long mips_a3;
+static long long mips_r2;
#elif defined(MIPS)
-static long a3;
-static long r2;
+static long mips_a3;
+static long mips_r2;
#elif defined(S390) || defined(S390X)
-static long gpr2;
-static long pc;
-static long syscall_mode;
+static long s390_gpr2;
#elif defined(HPPA)
static long hppa_r28;
#elif defined(SH)
-static long r0;
+static long sh_r0;
#elif defined(SH64)
static long sh64_r9;
#elif defined(CRISV10) || defined(CRISV32)
struct pt_regs tile_regs;
#elif defined(MICROBLAZE)
static long microblaze_r3;
+#elif defined(OR1K)
+static struct user_regs_struct or1k_regs;
+# define ARCH_REGS_FOR_GETREGSET or1k_regs
+#elif defined(METAG)
+static struct user_gp_regs metag_regs;
+# define ARCH_REGS_FOR_GETREGSET metag_regs
+#elif defined(XTENSA)
+static long xtensa_a2;
+# elif defined(ARC)
+static struct user_regs_struct arc_regs;
+# define ARCH_REGS_FOR_GETREGSET arc_regs
#endif
void
-printcall(struct tcb *tcp)
+print_pc(struct tcb *tcp)
{
#define PRINTBADPC tprintf(sizeof(long) == 4 ? "[????????] " : \
sizeof(long) == 8 ? "[????????????????] " : \
tprintf("[%08lx] ", i386_regs.eip);
#elif defined(S390) || defined(S390X)
long psw;
- if (upeek(tcp, PT_PSWADDR, &psw) < 0) {
+ if (upeek(tcp->pid, PT_PSWADDR, &psw) < 0) {
PRINTBADPC;
return;
}
tprintf("[%016lx] ", psw);
# endif
#elif defined(X86_64) || defined(X32)
- tprintf("[%016lx] ", (unsigned long) x86_64_regs.rip);
+ if (x86_io.iov_len == sizeof(i386_regs)) {
+ tprintf("[%08x] ", (unsigned) i386_regs.eip);
+ } else {
+# if defined(X86_64)
+ tprintf("[%016lx] ", (unsigned long) x86_64_regs.rip);
+# elif defined(X32)
+ /* Note: this truncates 64-bit rip to 32 bits */
+ tprintf("[%08lx] ", (unsigned long) x86_64_regs.rip);
+# endif
+ }
#elif defined(IA64)
long ip;
-
- if (upeek(tcp, PT_B0, &ip) < 0) {
+ if (upeek(tcp->pid, PT_B0, &ip) < 0) {
PRINTBADPC;
return;
}
tprintf("[%08lx] ", ip);
#elif defined(POWERPC)
- long pc;
-
- if (upeek(tcp, sizeof(unsigned long)*PT_NIP, &pc) < 0) {
- PRINTBADPC;
- return;
- }
+ long pc = ppc_regs.nip;
# ifdef POWERPC64
tprintf("[%016lx] ", pc);
# else
# endif
#elif defined(M68K)
long pc;
-
- if (upeek(tcp, 4*PT_PC, &pc) < 0) {
+ if (upeek(tcp->pid, 4*PT_PC, &pc) < 0) {
tprints("[????????] ");
return;
}
tprintf("[%08lx] ", pc);
#elif defined(ALPHA)
long pc;
-
- if (upeek(tcp, REG_PC, &pc) < 0) {
+ if (upeek(tcp->pid, REG_PC, &pc) < 0) {
tprints("[????????????????] ");
return;
}
tprintf("[%08lx] ", pc);
#elif defined(SPARC)
- tprintf("[%08lx] ", regs.pc);
+ tprintf("[%08lx] ", sparc_regs.pc);
#elif defined(SPARC64)
- tprintf("[%08lx] ", regs.tpc);
+ tprintf("[%08lx] ", sparc_regs.tpc);
#elif defined(HPPA)
long pc;
-
- if (upeek(tcp, PT_IAOQ0, &pc) < 0) {
+ if (upeek(tcp->pid, PT_IAOQ0, &pc) < 0) {
tprints("[????????] ");
return;
}
tprintf("[%08lx] ", pc);
#elif defined(MIPS)
long pc;
-
- if (upeek(tcp, REG_EPC, &pc) < 0) {
+ if (upeek(tcp->pid, REG_EPC, &pc) < 0) {
tprints("[????????] ");
return;
}
tprintf("[%08lx] ", pc);
#elif defined(SH)
long pc;
-
- if (upeek(tcp, 4*REG_PC, &pc) < 0) {
+ if (upeek(tcp->pid, 4*REG_PC, &pc) < 0) {
tprints("[????????] ");
return;
}
tprintf("[%08lx] ", pc);
#elif defined(SH64)
long pc;
-
- if (upeek(tcp, REG_PC, &pc) < 0) {
+ if (upeek(tcp->pid, REG_PC, &pc) < 0) {
tprints("[????????????????] ");
return;
}
tprintf("[%08lx] ", pc);
#elif defined(ARM)
tprintf("[%08lx] ", arm_regs.ARM_pc);
-/*#elif defined(AARCH64) ??? */
+#elif defined(AARCH64)
+ /* tprintf("[%016lx] ", aarch64_regs.regs[???]); */
#elif defined(AVR32)
- tprintf("[%08lx] ", regs.pc);
+ tprintf("[%08lx] ", avr32_regs.pc);
#elif defined(BFIN)
long pc;
-
- if (upeek(tcp, PT_PC, &pc) < 0) {
+ if (upeek(tcp->pid, PT_PC, &pc) < 0) {
PRINTBADPC;
return;
}
tprintf("[%08lx] ", pc);
#elif defined(CRISV10)
long pc;
-
- if (upeek(tcp, 4*PT_IRP, &pc) < 0) {
+ if (upeek(tcp->pid, 4*PT_IRP, &pc) < 0) {
PRINTBADPC;
return;
}
tprintf("[%08lx] ", pc);
#elif defined(CRISV32)
long pc;
-
- if (upeek(tcp, 4*PT_ERP, &pc) < 0) {
+ if (upeek(tcp->pid, 4*PT_ERP, &pc) < 0) {
PRINTBADPC;
return;
}
# else
tprintf("[%08lx] ", (unsigned long) tile_regs.pc);
# endif
+#elif defined(OR1K)
+ tprintf("[%08lx] ", or1k_regs.pc);
+#elif defined(METAG)
+ tprintf("[%08lx] ", metag_regs.pc);
+#elif defined(XTENSA)
+ long pc;
+ if (upeek(tcp->pid, REG_PC, &pc) < 0) {
+ PRINTBADPC;
+ return;
+ }
+ tprintf("[%08lx] ", pc);
+#elif defined(ARC)
+ tprintf("[%08lx] ", arc_regs.efa);
#endif /* architecture */
}
+/* Shuffle syscall numbers so that we don't have huge gaps in syscall table.
+ * The shuffling should be reversible: shuffle_scno(shuffle_scno(n)) == n.
+ */
+#if defined(ARM) || defined(AARCH64) /* So far only 32-bit ARM needs this */
+static long
+shuffle_scno(unsigned long scno)
+{
+ if (scno <= ARM_LAST_ORDINARY_SYSCALL)
+ return scno;
+
+ /* __ARM_NR_cmpxchg? Swap with LAST_ORDINARY+1 */
+ if (scno == 0x000ffff0)
+ return ARM_LAST_ORDINARY_SYSCALL+1;
+ if (scno == ARM_LAST_ORDINARY_SYSCALL+1)
+ return 0x000ffff0;
+
+ /* Is it ARM specific syscall?
+ * Swap with [LAST_ORDINARY+2, LAST_ORDINARY+2 + LAST_SPECIAL] range.
+ */
+ if (scno >= 0x000f0000
+ && scno <= 0x000f0000 + ARM_LAST_SPECIAL_SYSCALL
+ ) {
+ return scno - 0x000f0000 + (ARM_LAST_ORDINARY_SYSCALL+2);
+ }
+ if (/* scno >= ARM_LAST_ORDINARY_SYSCALL+2 - always true */ 1
+ && scno <= (ARM_LAST_ORDINARY_SYSCALL+2) + ARM_LAST_SPECIAL_SYSCALL
+ ) {
+ return scno + 0x000f0000 - (ARM_LAST_ORDINARY_SYSCALL+2);
+ }
+
+ return scno;
+}
+#else
+# define shuffle_scno(scno) ((long)(scno))
+#endif
+
+static char*
+undefined_scno_name(struct tcb *tcp)
+{
+ static char buf[sizeof("syscall_%lu") + sizeof(long)*3];
+
+ sprintf(buf, "syscall_%lu", shuffle_scno(tcp->scno));
+ return buf;
+}
+
+#ifdef POWERPC
+/*
+ * PTRACE_GETREGS was added to the PowerPC kernel in v2.6.23,
+ * we provide a slow fallback for old kernels.
+ */
+static int powerpc_getregs_old(pid_t pid)
+{
+ int i;
+ long r;
+
+ if (iflag) {
+ r = upeek(pid, sizeof(long) * PT_NIP, (long *)&ppc_regs.nip);
+ if (r)
+ goto out;
+ }
+#ifdef POWERPC64 /* else we never use it */
+ r = upeek(pid, sizeof(long) * PT_MSR, (long *)&ppc_regs.msr);
+ if (r)
+ goto out;
+#endif
+ r = upeek(pid, sizeof(long) * PT_CCR, (long *)&ppc_regs.ccr);
+ if (r)
+ goto out;
+ r = upeek(pid, sizeof(long) * PT_ORIG_R3, (long *)&ppc_regs.orig_gpr3);
+ if (r)
+ goto out;
+ for (i = 0; i <= 8; i++) {
+ r = upeek(pid, sizeof(long) * (PT_R0 + i),
+ (long *)&ppc_regs.gpr[i]);
+ if (r)
+ goto out;
+ }
+ out:
+ return r;
+}
+#endif
+
#ifndef get_regs
long get_regs_error;
-void get_regs(pid_t pid)
+
+#if defined(PTRACE_GETREGSET) && defined(NT_PRSTATUS)
+static void get_regset(pid_t pid)
{
-# if defined(AVR32)
- get_regs_error = ptrace(PTRACE_GETREGS, pid, NULL, ®s);
-# elif defined(I386)
- get_regs_error = ptrace(PTRACE_GETREGS, pid, NULL, (long) &i386_regs);
+/* constant iovec */
+# if defined(ARM) \
+ || defined(I386) \
+ || defined(METAG) \
+ || defined(OR1K) \
+ || defined(ARC)
+ static struct iovec io = {
+ .iov_base = &ARCH_REGS_FOR_GETREGSET,
+ .iov_len = sizeof(ARCH_REGS_FOR_GETREGSET)
+ };
+ get_regs_error = ptrace(PTRACE_GETREGSET, pid, NT_PRSTATUS, &io);
+
+/* variable iovec */
# elif defined(X86_64) || defined(X32)
- get_regs_error = ptrace(PTRACE_GETREGS, pid, NULL, (long) &x86_64_regs);
-# elif defined(ARM)
- get_regs_error = ptrace(PTRACE_GETREGS, pid, NULL, (void *)&arm_regs);
+ /* x86_io.iov_base = &x86_regs_union; - already is */
+ x86_io.iov_len = sizeof(x86_regs_union);
+ get_regs_error = ptrace(PTRACE_GETREGSET, pid, NT_PRSTATUS, &x86_io);
# elif defined(AARCH64)
- /*aarch64_io.iov_base = &aarch64_regs; - already is */
- aarch64_io.iov_len = sizeof(aarch64_regs);
- get_regs_error = ptrace(PTRACE_GETREGSET, pid, NT_PRSTATUS, (void *)&aarch64_io);
- if (get_regs_error)
- return;
- switch (aarch64_io.iov_len) {
- case sizeof(regs):
- /* We are in 32-bit mode */
- memcpy(&arm_regs, &aarch64_regs, sizeof(arm_regs));
- break;
- case sizeof(aarch64_regs):
- /* We are in 64-bit mode */
- /* Data is already in aarch64_regs */
- break;
- default:
- get_regs_error = -1;
- break;
- }
-# elif defined(SPARC) || defined(SPARC64)
- get_regs_error = ptrace(PTRACE_GETREGS, pid, (char *)®s, 0);
+ /* aarch64_io.iov_base = &arm_regs_union; - already is */
+ aarch64_io.iov_len = sizeof(arm_regs_union);
+ get_regs_error = ptrace(PTRACE_GETREGSET, pid, NT_PRSTATUS, &aarch64_io);
+# else
+# warning both PTRACE_GETREGSET and NT_PRSTATUS are available but not yet used
+# endif
+}
+#endif /* PTRACE_GETREGSET && NT_PRSTATUS */
+
+void
+get_regs(pid_t pid)
+{
+/* PTRACE_GETREGSET only */
+# if defined(METAG) || defined(OR1K) || defined(X32) || defined(AARCH64) || defined(ARC)
+ get_regset(pid);
+
+/* PTRACE_GETREGS only */
+# elif defined(AVR32)
+ get_regs_error = ptrace(PTRACE_GETREGS, pid, NULL, &avr32_regs);
# elif defined(TILE)
- get_regs_error = ptrace(PTRACE_GETREGS, pid, NULL, (long) &tile_regs);
+ get_regs_error = ptrace(PTRACE_GETREGS, pid, NULL, &tile_regs);
+# elif defined(SPARC) || defined(SPARC64)
+ get_regs_error = ptrace(PTRACE_GETREGS, pid, (char *)&sparc_regs, 0);
+# elif defined(POWERPC)
+ static bool old_kernel = 0;
+ if (old_kernel)
+ goto old;
+ get_regs_error = ptrace(PTRACE_GETREGS, pid, NULL, (long) &ppc_regs);
+ if (get_regs_error && errno == EIO) {
+ old_kernel = 1;
+ old:
+ get_regs_error = powerpc_getregs_old(pid);
+ }
+
+/* try PTRACE_GETREGSET first, fallback to PTRACE_GETREGS */
+# else
+# if defined(PTRACE_GETREGSET) && defined(NT_PRSTATUS)
+ static int getregset_support;
+
+ if (getregset_support >= 0) {
+ get_regset(pid);
+ if (getregset_support > 0)
+ return;
+ if (get_regs_error >= 0) {
+ getregset_support = 1;
+ return;
+ }
+ if (errno == EPERM || errno == ESRCH)
+ return;
+ getregset_support = -1;
+ }
+# endif /* PTRACE_GETREGSET && NT_PRSTATUS */
+# if defined(ARM)
+ get_regs_error = ptrace(PTRACE_GETREGS, pid, NULL, &arm_regs);
+# elif defined(I386)
+ get_regs_error = ptrace(PTRACE_GETREGS, pid, NULL, &i386_regs);
+# elif defined(X86_64)
+ /* Use old method, with unreliable heuristical detection of 32-bitness. */
+ x86_io.iov_len = sizeof(x86_64_regs);
+ get_regs_error = ptrace(PTRACE_GETREGS, pid, NULL, &x86_64_regs);
+ if (!get_regs_error && x86_64_regs.cs == 0x23) {
+ x86_io.iov_len = sizeof(i386_regs);
+ /*
+ * The order is important: i386_regs and x86_64_regs
+ * are overlaid in memory!
+ */
+ i386_regs.ebx = x86_64_regs.rbx;
+ i386_regs.ecx = x86_64_regs.rcx;
+ i386_regs.edx = x86_64_regs.rdx;
+ i386_regs.esi = x86_64_regs.rsi;
+ i386_regs.edi = x86_64_regs.rdi;
+ i386_regs.ebp = x86_64_regs.rbp;
+ i386_regs.eax = x86_64_regs.rax;
+ /* i386_regs.xds = x86_64_regs.ds; unused by strace */
+ /* i386_regs.xes = x86_64_regs.es; ditto... */
+ /* i386_regs.xfs = x86_64_regs.fs; */
+ /* i386_regs.xgs = x86_64_regs.gs; */
+ i386_regs.orig_eax = x86_64_regs.orig_rax;
+ i386_regs.eip = x86_64_regs.rip;
+ /* i386_regs.xcs = x86_64_regs.cs; */
+ /* i386_regs.eflags = x86_64_regs.eflags; */
+ i386_regs.esp = x86_64_regs.rsp;
+ /* i386_regs.xss = x86_64_regs.ss; */
+ }
+# else
+# error unhandled architecture
+# endif /* ARM || I386 || X86_64 */
# endif
}
-#endif
+#endif /* !get_regs */
/* Returns:
* 0: "ignore this ptrace stop", bail out of trace_syscall_entering() silently.
long scno = 0;
#if defined(S390) || defined(S390X)
- if (upeek(tcp, PT_GPR2, &syscall_mode) < 0)
+ if (upeek(tcp->pid, PT_GPR2, &s390_gpr2) < 0)
return -1;
- if (syscall_mode != -ENOSYS) {
+ if (s390_gpr2 != -ENOSYS) {
/*
* Since kernel version 2.5.44 the scno gets passed in gpr2.
*/
- scno = syscall_mode;
+ scno = s390_gpr2;
} else {
/*
* Old style of "passing" the scno via the SVC instruction.
*/
+ long psw;
long opcode, offset_reg, tmp;
void *svc_addr;
static const int gpr_offset[16] = {
PT_GPR12, PT_GPR13, PT_GPR14, PT_GPR15
};
- if (upeek(tcp, PT_PSWADDR, &pc) < 0)
+ if (upeek(tcp->pid, PT_PSWADDR, &psw) < 0)
return -1;
errno = 0;
- opcode = ptrace(PTRACE_PEEKTEXT, tcp->pid, (char *)(pc-sizeof(long)), 0);
+ opcode = ptrace(PTRACE_PEEKTEXT, tcp->pid, (char *)(psw - sizeof(long)), 0);
if (errno) {
- perror_msg("%s", "peektext(pc-oneword)");
+ perror_msg("peektext(psw-oneword)");
return -1;
}
tmp = 0;
offset_reg = (opcode & 0x000f0000) >> 16;
- if (offset_reg && (upeek(tcp, gpr_offset[offset_reg], &tmp) < 0))
+ if (offset_reg && (upeek(tcp->pid, gpr_offset[offset_reg], &tmp) < 0))
return -1;
svc_addr += tmp;
tmp = 0;
offset_reg = (opcode & 0x0000f000) >> 12;
- if (offset_reg && (upeek(tcp, gpr_offset[offset_reg], &tmp) < 0))
+ if (offset_reg && (upeek(tcp->pid, gpr_offset[offset_reg], &tmp) < 0))
return -1;
svc_addr += tmp;
# endif
tmp = 0;
offset_reg = (opcode & 0x00f00000) >> 20;
- if (offset_reg && (upeek(tcp, gpr_offset[offset_reg], &tmp) < 0))
+ if (offset_reg && (upeek(tcp->pid, gpr_offset[offset_reg], &tmp) < 0))
return -1;
scno = (scno | tmp) & 0xff;
}
}
#elif defined(POWERPC)
- if (upeek(tcp, sizeof(unsigned long)*PT_R0, &scno) < 0)
- return -1;
+ scno = ppc_regs.gpr[0];
# ifdef POWERPC64
- /* TODO: speed up strace by not doing this at every syscall.
- * We only need to do it after execve.
- */
- int currpers;
- long val;
+ unsigned int currpers;
- /* Check for 64/32 bit mode. */
- if (upeek(tcp, sizeof(unsigned long)*PT_MSR, &val) < 0)
- return -1;
- /* SF is bit 0 of MSR */
- if (val < 0)
- currpers = 0;
- else
- currpers = 1;
+ /*
+ * Check for 64/32 bit mode.
+ * Embedded implementations covered by Book E extension of PPC use
+ * bit 0 (CM) of 32-bit Machine state register (MSR).
+ * Other implementations use bit 0 (SF) of 64-bit MSR.
+ */
+ currpers = (ppc_regs.msr & 0x8000000080000000) ? 0 : 1;
update_personality(tcp, currpers);
# endif
#elif defined(AVR32)
- scno = regs.r8;
+ scno = avr32_regs.r8;
#elif defined(BFIN)
- if (upeek(tcp, PT_ORIG_P0, &scno))
+ if (upeek(tcp->pid, PT_ORIG_P0, &scno))
return -1;
#elif defined(I386)
scno = i386_regs.orig_eax;
# ifndef __X32_SYSCALL_BIT
# define __X32_SYSCALL_BIT 0x40000000
# endif
-# ifndef __X32_SYSCALL_MASK
-# define __X32_SYSCALL_MASK __X32_SYSCALL_BIT
-# endif
-
- int currpers;
- scno = x86_64_regs.orig_rax;
-
- /* Check CS register value. On x86-64 linux it is:
- * 0x33 for long mode (64 bit)
- * 0x23 for compatibility mode (32 bit)
- * Check DS register value. On x86-64 linux it is:
- * 0x2b for x32 mode (x86-64 in 32 bit)
+ unsigned int currpers;
+# if 1
+ /* GETREGSET of NT_PRSTATUS tells us regset size,
+ * which unambiguously detects i386.
+ *
+ * Linux kernel distinguishes x86-64 and x32 processes
+ * solely by looking at __X32_SYSCALL_BIT:
+ * arch/x86/include/asm/compat.h::is_x32_task():
+ * if (task_pt_regs(current)->orig_ax & __X32_SYSCALL_BIT)
+ * return true;
+ */
+ if (x86_io.iov_len == sizeof(i386_regs)) {
+ scno = i386_regs.orig_eax;
+ currpers = 1;
+ } else {
+ scno = x86_64_regs.orig_rax;
+ currpers = 0;
+ if (scno & __X32_SYSCALL_BIT) {
+ scno -= __X32_SYSCALL_BIT;
+ currpers = 2;
+ }
+ }
+# elif 0
+ /* cs = 0x33 for long mode (native 64 bit and x32)
+ * cs = 0x23 for compatibility mode (32 bit)
+ * ds = 0x2b for x32 mode (x86-64 in 32 bit)
*/
+ scno = x86_64_regs.orig_rax;
switch (x86_64_regs.cs) {
case 0x23: currpers = 1; break;
case 0x33:
if (x86_64_regs.ds == 0x2b) {
currpers = 2;
- scno &= ~__X32_SYSCALL_MASK;
+ scno &= ~__X32_SYSCALL_BIT;
} else
currpers = 0;
break;
currpers = current_personality;
break;
}
-# if 0
+# elif 0
/* This version analyzes the opcode of a syscall instruction.
* (int 0x80 on i386 vs. syscall on x86-64)
- * It works, but is too complicated.
+ * It works, but is too complicated, and strictly speaking, unreliable.
*/
- unsigned long val, rip, i;
-
- rip = x86_64_regs.rip;
-
+ unsigned long call, rip = x86_64_regs.rip;
/* sizeof(syscall) == sizeof(int 0x80) == 2 */
rip -= 2;
errno = 0;
-
call = ptrace(PTRACE_PEEKTEXT, tcp->pid, (char *)rip, (char *)0);
if (errno)
fprintf(stderr, "ptrace_peektext failed: %s\n",
break;
}
# endif
+
# ifdef X32
- /* Value of currpers:
- * 0: 64 bit
- * 1: 32 bit
- * 2: X32
- * Value of current_personality:
- * 0: X32
- * 1: 32 bit
+ /* If we are built for a x32 system, then personality 0 is x32
+ * (not x86_64), and stracing of x86_64 apps is not supported.
+ * Stracing of i386 apps is still supported.
*/
- switch (currpers) {
- case 0:
- fprintf(stderr, "syscall_%lu (...) in unsupported "
- "64-bit mode of process PID=%d\n",
- scno, tcp->pid);
- return 0;
- case 2:
- currpers = 0;
+ if (currpers == 0) {
+ fprintf(stderr, "syscall_%lu(...) in unsupported "
+ "64-bit mode of process PID=%d\n",
+ scno, tcp->pid);
+ return 0;
}
+ currpers &= ~2; /* map 2,1 to 0,1 */
# endif
update_personality(tcp, currpers);
#elif defined(IA64)
# define IA64_PSR_IS ((long)1 << 34)
long psr;
- if (upeek(tcp, PT_CR_IPSR, &psr) >= 0)
- ia32 = (psr & IA64_PSR_IS) != 0;
- if (ia32) {
- if (upeek(tcp, PT_R1, &scno) < 0)
+ if (upeek(tcp->pid, PT_CR_IPSR, &psr) >= 0)
+ ia64_ia32mode = ((psr & IA64_PSR_IS) != 0);
+ if (ia64_ia32mode) {
+ if (upeek(tcp->pid, PT_R1, &scno) < 0)
return -1;
} else {
- if (upeek(tcp, PT_R15, &scno) < 0)
+ if (upeek(tcp->pid, PT_R15, &scno) < 0)
return -1;
}
#elif defined(AARCH64)
scno = aarch64_regs.regs[8];
update_personality(tcp, 1);
break;
- case sizeof(regs):
+ case sizeof(arm_regs):
/* We are in 32-bit mode */
- scno = arm_regs.uregs[7];
+ /* Note: we don't support OABI, unlike 32-bit ARM build */
+ scno = arm_regs.ARM_r7;
+ scno = shuffle_scno(scno);
update_personality(tcp, 0);
break;
}
#elif defined(ARM)
- /*
- * We only need to grab the syscall number on syscall entry.
- */
- if (arm_regs.ARM_ip == 0) {
- /*
- * Note: we only deal with 32-bit CPUs here
- */
- if (arm_regs.ARM_cpsr & 0x20) {
- /*
- * Get the Thumb-mode system call number
- */
- scno = arm_regs.ARM_r7;
- } else {
- /*
- * Get the ARM-mode system call number
- */
- errno = 0;
- scno = ptrace(PTRACE_PEEKTEXT, tcp->pid, (void *)(arm_regs.ARM_pc - 4), NULL);
- if (errno)
- return -1;
-
- /* Handle the EABI syscall convention. We do not
- bother converting structures between the two
- ABIs, but basic functionality should work even
- if strace and the traced program have different
- ABIs. */
- if (scno == 0xef000000) {
- scno = arm_regs.ARM_r7;
- } else {
- if ((scno & 0x0ff00000) != 0x0f900000) {
- fprintf(stderr, "syscall: unknown syscall trap 0x%08lx\n",
- scno);
- return -1;
- }
+ if (arm_regs.ARM_ip != 0) {
+ /* It is not a syscall entry */
+ fprintf(stderr, "pid %d stray syscall exit\n", tcp->pid);
+ tcp->flags |= TCB_INSYSCALL;
+ return 0;
+ }
+ /* Note: we support only 32-bit CPUs, not 26-bit */
- /*
- * Fixup the syscall number
- */
- scno &= 0x000fffff;
- }
+# if !defined(__ARM_EABI__) || ENABLE_ARM_OABI
+ if (arm_regs.ARM_cpsr & 0x20)
+ /* Thumb mode */
+ goto scno_in_r7;
+ /* ARM mode */
+ /* Check EABI/OABI by examining SVC insn's low 24 bits */
+ errno = 0;
+ scno = ptrace(PTRACE_PEEKTEXT, tcp->pid, (void *)(arm_regs.ARM_pc - 4), NULL);
+ if (errno)
+ return -1;
+ /* EABI syscall convention? */
+ if (scno != 0xef000000) {
+ /* No, it's OABI */
+ if ((scno & 0x0ff00000) != 0x0f900000) {
+ fprintf(stderr, "pid %d unknown syscall trap 0x%08lx\n",
+ tcp->pid, scno);
+ return -1;
}
- if (scno & 0x0f0000) {
- /*
- * Handle ARM specific syscall
- */
- update_personality(tcp, 1);
- scno &= 0x0000ffff;
- } else
- update_personality(tcp, 0);
-
+ /* Fixup the syscall number */
+ scno &= 0x000fffff;
} else {
- fprintf(stderr, "pid %d stray syscall entry\n", tcp->pid);
- tcp->flags |= TCB_INSYSCALL;
+ scno_in_r7:
+ scno = arm_regs.ARM_r7;
}
+# else /* __ARM_EABI__ || !ENABLE_ARM_OABI */
+ scno = arm_regs.ARM_r7;
+# endif
+ scno = shuffle_scno(scno);
#elif defined(M68K)
- if (upeek(tcp, 4*PT_ORIG_D0, &scno) < 0)
+ if (upeek(tcp->pid, 4*PT_ORIG_D0, &scno) < 0)
return -1;
#elif defined(LINUX_MIPSN32)
unsigned long long regs[38];
if (ptrace(PTRACE_GETREGS, tcp->pid, NULL, (long) ®s) < 0)
return -1;
- a3 = regs[REG_A3];
- r2 = regs[REG_V0];
+ mips_a3 = regs[REG_A3];
+ mips_r2 = regs[REG_V0];
- scno = r2;
+ scno = mips_r2;
if (!SCNO_IN_RANGE(scno)) {
- if (a3 == 0 || a3 == -1) {
+ if (mips_a3 == 0 || mips_a3 == -1) {
if (debug_flag)
fprintf(stderr, "stray syscall exit: v0 = %ld\n", scno);
return 0;
}
}
#elif defined(MIPS)
- if (upeek(tcp, REG_A3, &a3) < 0)
+ if (upeek(tcp->pid, REG_A3, &mips_a3) < 0)
return -1;
- if (upeek(tcp, REG_V0, &scno) < 0)
+ if (upeek(tcp->pid, REG_V0, &scno) < 0)
return -1;
if (!SCNO_IN_RANGE(scno)) {
- if (a3 == 0 || a3 == -1) {
+ if (mips_a3 == 0 || mips_a3 == -1) {
if (debug_flag)
fprintf(stderr, "stray syscall exit: v0 = %ld\n", scno);
return 0;
}
}
#elif defined(ALPHA)
- if (upeek(tcp, REG_A3, &alpha_a3) < 0)
+ if (upeek(tcp->pid, REG_A3, &alpha_a3) < 0)
return -1;
- if (upeek(tcp, REG_R0, &scno) < 0)
+ if (upeek(tcp->pid, REG_R0, &scno) < 0)
return -1;
/*
unsigned long trap;
errno = 0;
# if defined(SPARC64)
- trap = ptrace(PTRACE_PEEKTEXT, tcp->pid, (char *)regs.tpc, 0);
+ trap = ptrace(PTRACE_PEEKTEXT, tcp->pid, (char *)sparc_regs.tpc, 0);
trap >>= 32;
# else
- trap = ptrace(PTRACE_PEEKTEXT, tcp->pid, (char *)regs.pc, 0);
+ trap = ptrace(PTRACE_PEEKTEXT, tcp->pid, (char *)sparc_regs.pc, 0);
# endif
if (errno)
return -1;
break;
default:
# if defined(SPARC64)
- fprintf(stderr, "syscall: unknown syscall trap %08lx %016lx\n", trap, regs.tpc);
+ fprintf(stderr, "syscall: unknown syscall trap %08lx %016lx\n", trap, sparc_regs.tpc);
# else
- fprintf(stderr, "syscall: unknown syscall trap %08lx %08lx\n", trap, regs.pc);
+ fprintf(stderr, "syscall: unknown syscall trap %08lx %08lx\n", trap, sparc_regs.pc);
# endif
return -1;
}
if (trap == 0x91d02027)
scno = 156;
else
- scno = regs.u_regs[U_REG_G1];
+ scno = sparc_regs.u_regs[U_REG_G1];
if (scno == 0) {
- scno = regs.u_regs[U_REG_O0];
- memmove(®s.u_regs[U_REG_O0], ®s.u_regs[U_REG_O1], 7*sizeof(regs.u_regs[0]));
+ scno = sparc_regs.u_regs[U_REG_O0];
+ memmove(&sparc_regs.u_regs[U_REG_O0], &sparc_regs.u_regs[U_REG_O1], 7*sizeof(sparc_regs.u_regs[0]));
}
#elif defined(HPPA)
- if (upeek(tcp, PT_GR20, &scno) < 0)
+ if (upeek(tcp->pid, PT_GR20, &scno) < 0)
return -1;
#elif defined(SH)
/*
* In the new syscall ABI, the system call number is in R3.
*/
- if (upeek(tcp, 4*(REG_REG0+3), &scno) < 0)
+ if (upeek(tcp->pid, 4*(REG_REG0+3), &scno) < 0)
return -1;
if (scno < 0) {
scno = correct_scno;
}
#elif defined(SH64)
- if (upeek(tcp, REG_SYSCALL, &scno) < 0)
+ if (upeek(tcp->pid, REG_SYSCALL, &scno) < 0)
return -1;
scno &= 0xFFFF;
#elif defined(CRISV10) || defined(CRISV32)
- if (upeek(tcp, 4*PT_R9, &scno) < 0)
+ if (upeek(tcp->pid, 4*PT_R9, &scno) < 0)
return -1;
#elif defined(TILE)
- int currpers;
+ unsigned int currpers;
scno = tile_regs.regs[10];
# ifdef __tilepro__
currpers = 1;
# else
+# ifndef PT_FLAGS_COMPAT
+# define PT_FLAGS_COMPAT 0x10000 /* from Linux 3.8 on */
+# endif
if (tile_regs.flags & PT_FLAGS_COMPAT)
currpers = 1;
else
currpers = 0;
# endif
update_personality(tcp, currpers);
-
- if (!(tcp->flags & TCB_INSYSCALL)) {
- /* Check if we return from execve. */
- if (tcp->flags & TCB_WAITEXECVE) {
- tcp->flags &= ~TCB_WAITEXECVE;
- return 0;
- }
- }
#elif defined(MICROBLAZE)
- if (upeek(tcp, 0, &scno) < 0)
+ if (upeek(tcp->pid, 0, &scno) < 0)
return -1;
-#endif
-
-#if defined(SH)
- /* new syscall ABI returns result in R0 */
- if (upeek(tcp, 4*REG_REG0, (long *)&r0) < 0)
- return -1;
-#elif defined(SH64)
- /* ABI defines result returned in r9 */
- if (upeek(tcp, REG_GENERAL(9), (long *)&sh64_r9) < 0)
+#elif defined(OR1K)
+ scno = or1k_regs.gpr[11];
+#elif defined(METAG)
+ scno = metag_regs.dx[0][1]; /* syscall number in D1Re0 (D1.0) */
+#elif defined(XTENSA)
+ if (upeek(tcp->pid, SYSCALL_NR, &scno) < 0)
return -1;
+# elif defined(ARC)
+ scno = arc_regs.scratch.r8;
#endif
tcp->scno = scno;
+ if (SCNO_IS_VALID(tcp->scno)) {
+ tcp->s_ent = &sysent[scno];
+ tcp->qual_flg = qual_flags[scno];
+ } else {
+ static const struct_sysent unknown = {
+ .nargs = MAX_ARGS,
+ .sys_flags = 0,
+ .sys_func = printargs,
+ .sys_name = "unknown", /* not used */
+ };
+ tcp->s_ent = &unknown;
+ tcp->qual_flg = UNDEFINED_SCNO | QUAL_RAW | DEFAULT_QUAL_FLAGS;
+ }
return 1;
}
}
#elif defined(X86_64) || defined(X32)
{
- long rax = x86_64_regs.rax;
- if (current_personality == 1)
- rax = (int)rax; /* sign extend from 32 bits */
+ long rax;
+ if (x86_io.iov_len == sizeof(i386_regs)) {
+ /* Sign extend from 32 bits */
+ rax = (int32_t)i386_regs.eax;
+ } else {
+ /* Note: in X32 build, this truncates 64 to 32 bits */
+ rax = x86_64_regs.rax;
+ }
if (rax != -ENOSYS) {
if (debug_flag)
fprintf(stderr, "not a syscall entry (rax = %ld)\n", rax);
return 0;
}
}
-#elif defined(S390) || defined(S390X)
- /* TODO: we already fetched PT_GPR2 in get_scno
- * and stored it in syscall_mode, reuse it here
- * instead of re-fetching?
- */
- if (upeek(tcp, PT_GPR2, &gpr2) < 0)
- return -1;
- if (syscall_mode != -ENOSYS)
- syscall_mode = tcp->scno;
- if (gpr2 != syscall_mode) {
- if (debug_flag)
- fprintf(stderr, "not a syscall entry (gpr2 = %ld)\n", gpr2);
- return 0;
- }
#elif defined(M68K)
/* TODO? Eliminate upeek's in arches below like we did in x86 */
- if (upeek(tcp, 4*PT_D0, &m68k_d0) < 0)
+ if (upeek(tcp->pid, 4*PT_D0, &m68k_d0) < 0)
return -1;
if (m68k_d0 != -ENOSYS) {
if (debug_flag)
return 0;
}
#elif defined(IA64)
- if (upeek(tcp, PT_R10, &ia64_r10) < 0)
+ if (upeek(tcp->pid, PT_R10, &ia64_r10) < 0)
return -1;
- if (upeek(tcp, PT_R8, &ia64_r8) < 0)
+ if (upeek(tcp->pid, PT_R8, &ia64_r8) < 0)
return -1;
- if (ia32 && ia64_r8 != -ENOSYS) {
+ if (ia64_ia32mode && ia64_r8 != -ENOSYS) {
if (debug_flag)
fprintf(stderr, "not a syscall entry (r8 = %ld)\n", ia64_r8);
return 0;
}
#elif defined(CRISV10) || defined(CRISV32)
- if (upeek(tcp, 4*PT_R10, &cris_r10) < 0)
+ if (upeek(tcp->pid, 4*PT_R10, &cris_r10) < 0)
return -1;
if (cris_r10 != -ENOSYS) {
if (debug_flag)
return 0;
}
#elif defined(MICROBLAZE)
- if (upeek(tcp, 3 * 4, µblaze_r3) < 0)
+ if (upeek(tcp->pid, 3 * 4, µblaze_r3) < 0)
return -1;
if (microblaze_r3 != -ENOSYS) {
if (debug_flag)
* CLONE_UNTRACED, so we keep the same logic with that option
* and don't trace it.
*/
- if ((sysent[tcp->scno].sys_func == sys_clone) &&
- (tcp->u_arg[ARG_FLAGS] & CLONE_UNTRACED))
+ if ((tcp->s_ent->sys_func == sys_clone)
+ && (tcp->u_arg[ARG_FLAGS] & CLONE_UNTRACED)
+ )
return;
setbpt(tcp);
} else {
*/
int (*func)();
- if (!SCNO_IN_RANGE(tcp->scno))
- return;
-
- func = sysent[tcp->scno].sys_func;
+ func = tcp->s_ent->sys_func;
if ( sys_fork == func
- || sys_vfork == func
|| sys_clone == func
) {
internal_fork(tcp);
{
int i, nargs;
- if (SCNO_IN_RANGE(tcp->scno))
- nargs = tcp->u_nargs = sysent[tcp->scno].nargs;
- else
- nargs = tcp->u_nargs = MAX_ARGS;
+ nargs = tcp->s_ent->nargs;
#if defined(S390) || defined(S390X)
for (i = 0; i < nargs; ++i)
- if (upeek(tcp, i==0 ? PT_ORIGGPR2 : PT_GPR2 + i*sizeof(long), &tcp->u_arg[i]) < 0)
+ if (upeek(tcp->pid, i==0 ? PT_ORIGGPR2 : PT_GPR2 + i*sizeof(long), &tcp->u_arg[i]) < 0)
return -1;
#elif defined(ALPHA)
for (i = 0; i < nargs; ++i)
- if (upeek(tcp, REG_A0+i, &tcp->u_arg[i]) < 0)
+ if (upeek(tcp->pid, REG_A0+i, &tcp->u_arg[i]) < 0)
return -1;
#elif defined(IA64)
- if (!ia32) {
+ if (!ia64_ia32mode) {
unsigned long *out0, cfm, sof, sol;
long rbs_end;
/* be backwards compatible with kernel < 2.4.4... */
# define PT_RBS_END PT_AR_BSP
# endif
- if (upeek(tcp, PT_RBS_END, &rbs_end) < 0)
+ if (upeek(tcp->pid, PT_RBS_END, &rbs_end) < 0)
return -1;
- if (upeek(tcp, PT_CFM, (long *) &cfm) < 0)
+ if (upeek(tcp->pid, PT_CFM, (long *) &cfm) < 0)
return -1;
sof = (cfm >> 0) & 0x7f;
PT_R13 /* EBP = out5 */};
for (i = 0; i < nargs; ++i) {
- if (upeek(tcp, argreg[i], &tcp->u_arg[i]) < 0)
+ if (upeek(tcp->pid, argreg[i], &tcp->u_arg[i]) < 0)
return -1;
/* truncate away IVE sign-extension */
tcp->u_arg[i] &= 0xffffffff;
if (nargs > 4) {
long sp;
- if (upeek(tcp, REG_SP, &sp) < 0)
+ if (upeek(tcp->pid, REG_SP, &sp) < 0)
return -1;
for (i = 0; i < 4; ++i)
- if (upeek(tcp, REG_A0 + i, &tcp->u_arg[i]) < 0)
+ if (upeek(tcp->pid, REG_A0 + i, &tcp->u_arg[i]) < 0)
return -1;
umoven(tcp, sp + 16, (nargs - 4) * sizeof(tcp->u_arg[0]),
(char *)(tcp->u_arg + 4));
} else {
for (i = 0; i < nargs; ++i)
- if (upeek(tcp, REG_A0 + i, &tcp->u_arg[i]) < 0)
+ if (upeek(tcp->pid, REG_A0 + i, &tcp->u_arg[i]) < 0)
return -1;
}
#elif defined(POWERPC)
-# ifndef PT_ORIG_R3
-# define PT_ORIG_R3 34
-# endif
- for (i = 0; i < nargs; ++i) {
- if (upeek(tcp, (i==0) ?
- (sizeof(unsigned long) * PT_ORIG_R3) :
- ((i+PT_R3) * sizeof(unsigned long)),
- &tcp->u_arg[i]) < 0)
- return -1;
- }
+ (void)i;
+ (void)nargs;
+ tcp->u_arg[0] = ppc_regs.orig_gpr3;
+ tcp->u_arg[1] = ppc_regs.gpr[4];
+ tcp->u_arg[2] = ppc_regs.gpr[5];
+ tcp->u_arg[3] = ppc_regs.gpr[6];
+ tcp->u_arg[4] = ppc_regs.gpr[7];
+ tcp->u_arg[5] = ppc_regs.gpr[8];
#elif defined(SPARC) || defined(SPARC64)
for (i = 0; i < nargs; ++i)
- tcp->u_arg[i] = regs.u_regs[U_REG_O0 + i];
+ tcp->u_arg[i] = sparc_regs.u_regs[U_REG_O0 + i];
#elif defined(HPPA)
for (i = 0; i < nargs; ++i)
- if (upeek(tcp, PT_GR26-4*i, &tcp->u_arg[i]) < 0)
+ if (upeek(tcp->pid, PT_GR26-4*i, &tcp->u_arg[i]) < 0)
return -1;
#elif defined(ARM) || defined(AARCH64)
# if defined(AARCH64)
for (i = 0; i < nargs; ++i)
tcp->u_arg[i] = aarch64_regs.regs[i];
else
-# endif /* AARCH64 */
+# endif
for (i = 0; i < nargs; ++i)
tcp->u_arg[i] = arm_regs.uregs[i];
#elif defined(AVR32)
(void)i;
(void)nargs;
- tcp->u_arg[0] = regs.r12;
- tcp->u_arg[1] = regs.r11;
- tcp->u_arg[2] = regs.r10;
- tcp->u_arg[3] = regs.r9;
- tcp->u_arg[4] = regs.r5;
- tcp->u_arg[5] = regs.r3;
+ tcp->u_arg[0] = avr32_regs.r12;
+ tcp->u_arg[1] = avr32_regs.r11;
+ tcp->u_arg[2] = avr32_regs.r10;
+ tcp->u_arg[3] = avr32_regs.r9;
+ tcp->u_arg[4] = avr32_regs.r5;
+ tcp->u_arg[5] = avr32_regs.r3;
#elif defined(BFIN)
static const int argreg[MAX_ARGS] = { PT_R0, PT_R1, PT_R2, PT_R3, PT_R4, PT_R5 };
for (i = 0; i < nargs; ++i)
- if (upeek(tcp, argreg[i], &tcp->u_arg[i]) < 0)
+ if (upeek(tcp->pid, argreg[i], &tcp->u_arg[i]) < 0)
return -1;
#elif defined(SH)
static const int syscall_regs[MAX_ARGS] = {
};
for (i = 0; i < nargs; ++i)
- if (upeek(tcp, syscall_regs[i], &tcp->u_arg[i]) < 0)
+ if (upeek(tcp->pid, syscall_regs[i], &tcp->u_arg[i]) < 0)
return -1;
#elif defined(SH64)
int i;
static const int syscall_regs[MAX_ARGS] = { 2, 3, 4, 5, 6, 7 };
for (i = 0; i < nargs; ++i)
- if (upeek(tcp, REG_GENERAL(syscall_regs[i]), &tcp->u_arg[i]) < 0)
+ if (upeek(tcp->pid, REG_GENERAL(syscall_regs[i]), &tcp->u_arg[i]) < 0)
return -1;
+#elif defined(I386)
+ (void)i;
+ (void)nargs;
+ tcp->u_arg[0] = i386_regs.ebx;
+ tcp->u_arg[1] = i386_regs.ecx;
+ tcp->u_arg[2] = i386_regs.edx;
+ tcp->u_arg[3] = i386_regs.esi;
+ tcp->u_arg[4] = i386_regs.edi;
+ tcp->u_arg[5] = i386_regs.ebp;
#elif defined(X86_64) || defined(X32)
(void)i;
(void)nargs;
- if (current_personality != 1) { /* x86-64 or x32 ABI */
+ if (x86_io.iov_len != sizeof(i386_regs)) {
+ /* x86-64 or x32 ABI */
tcp->u_arg[0] = x86_64_regs.rdi;
tcp->u_arg[1] = x86_64_regs.rsi;
tcp->u_arg[2] = x86_64_regs.rdx;
tcp->ext_arg[4] = x86_64_regs.r8;
tcp->ext_arg[5] = x86_64_regs.r9;
# endif
- } else { /* i386 ABI */
- /* Sign-extend lower 32 bits */
- tcp->u_arg[0] = (long)(int)x86_64_regs.rbx;
- tcp->u_arg[1] = (long)(int)x86_64_regs.rcx;
- tcp->u_arg[2] = (long)(int)x86_64_regs.rdx;
- tcp->u_arg[3] = (long)(int)x86_64_regs.rsi;
- tcp->u_arg[4] = (long)(int)x86_64_regs.rdi;
- tcp->u_arg[5] = (long)(int)x86_64_regs.rbp;
+ } else {
+ /* i386 ABI */
+ /* Zero-extend from 32 bits */
+ /* Use widen_to_long(tcp->u_arg[N]) in syscall handlers
+ * if you need to use *sign-extended* parameter.
+ */
+ tcp->u_arg[0] = (long)(uint32_t)i386_regs.ebx;
+ tcp->u_arg[1] = (long)(uint32_t)i386_regs.ecx;
+ tcp->u_arg[2] = (long)(uint32_t)i386_regs.edx;
+ tcp->u_arg[3] = (long)(uint32_t)i386_regs.esi;
+ tcp->u_arg[4] = (long)(uint32_t)i386_regs.edi;
+ tcp->u_arg[5] = (long)(uint32_t)i386_regs.ebp;
}
#elif defined(MICROBLAZE)
for (i = 0; i < nargs; ++i)
- if (upeek(tcp, (5 + i) * 4, &tcp->u_arg[i]) < 0)
+ if (upeek(tcp->pid, (5 + i) * 4, &tcp->u_arg[i]) < 0)
return -1;
#elif defined(CRISV10) || defined(CRISV32)
static const int crisregs[MAX_ARGS] = {
};
for (i = 0; i < nargs; ++i)
- if (upeek(tcp, crisregs[i], &tcp->u_arg[i]) < 0)
+ if (upeek(tcp->pid, crisregs[i], &tcp->u_arg[i]) < 0)
return -1;
#elif defined(TILE)
for (i = 0; i < nargs; ++i)
tcp->u_arg[i] = tile_regs.regs[i];
#elif defined(M68K)
for (i = 0; i < nargs; ++i)
- if (upeek(tcp, (i < 5 ? i : i + 2)*4, &tcp->u_arg[i]) < 0)
+ if (upeek(tcp->pid, (i < 5 ? i : i + 2)*4, &tcp->u_arg[i]) < 0)
return -1;
-#elif defined(I386)
- (void)i;
+#elif defined(OR1K)
(void)nargs;
- tcp->u_arg[0] = i386_regs.ebx;
- tcp->u_arg[1] = i386_regs.ecx;
- tcp->u_arg[2] = i386_regs.edx;
- tcp->u_arg[3] = i386_regs.esi;
- tcp->u_arg[4] = i386_regs.edi;
- tcp->u_arg[5] = i386_regs.ebp;
+ for (i = 0; i < 6; ++i)
+ tcp->u_arg[i] = or1k_regs.gpr[3 + i];
+#elif defined(METAG)
+ for (i = 0; i < nargs; i++)
+ /* arguments go backwards from D1Ar1 (D1.3) */
+ tcp->u_arg[i] = ((unsigned long *)&metag_regs.dx[3][1])[-i];
+#elif defined(XTENSA)
+ /* arg0: a6, arg1: a3, arg2: a4, arg3: a5, arg4: a8, arg5: a9 */
+ static const int xtensaregs[MAX_ARGS] = { 6, 3, 4, 5, 8, 9 };
+ for (i = 0; i < nargs; ++i)
+ if (upeek(tcp->pid, REG_A_BASE + xtensaregs[i], &tcp->u_arg[i]) < 0)
+ return -1;
+# elif defined(ARC)
+ long *arc_args = &arc_regs.scratch.r0;
+ for (i = 0; i < nargs; ++i)
+ tcp->u_arg[i] = *arc_args--;
+
#else /* Other architecture (32bits specific) */
for (i = 0; i < nargs; ++i)
- if (upeek(tcp, i*4, &tcp->u_arg[i]) < 0)
+ if (upeek(tcp->pid, i*4, &tcp->u_arg[i]) < 0)
return -1;
#endif
return 1;
printleader(tcp);
if (scno_good != 1)
tprints("????" /* anti-trigraph gap */ "(");
- else if (!SCNO_IN_RANGE(tcp->scno))
- tprintf("syscall_%lu(", tcp->scno);
+ else if (tcp->qual_flg & UNDEFINED_SCNO)
+ tprintf("%s(", undefined_scno_name(tcp));
else
- tprintf("%s(", sysent[tcp->scno].sys_name);
+ tprintf("%s(", tcp->s_ent->sys_name);
/*
* " <unavailable>" will be added later by the code which
* detects ptrace errors.
goto ret;
}
+ if ( sys_execve == tcp->s_ent->sys_func
+# if defined(SPARC) || defined(SPARC64)
+ || sys_execv == tcp->s_ent->sys_func
+# endif
+ ) {
+ hide_log_until_execve = 0;
+ }
+
#if defined(SYS_socket_subcall) || defined(SYS_ipc_subcall)
- while (SCNO_IN_RANGE(tcp->scno)) {
+ while (1) {
# ifdef SYS_socket_subcall
- if (sysent[tcp->scno].sys_func == sys_socketcall) {
+ if (tcp->s_ent->sys_func == sys_socketcall) {
decode_socket_subcall(tcp);
break;
}
# endif
# ifdef SYS_ipc_subcall
- if (sysent[tcp->scno].sys_func == sys_ipc) {
+ if (tcp->s_ent->sys_func == sys_ipc) {
decode_ipc_subcall(tcp);
break;
}
# endif
break;
}
-#endif /* SYS_socket_subcall || SYS_ipc_subcall */
+#endif
if (need_fork_exec_workarounds)
syscall_fixup_for_fork_exec(tcp);
- if ((SCNO_IN_RANGE(tcp->scno) &&
- !(qual_flags[tcp->scno] & QUAL_TRACE)) ||
- (tracing_paths && !pathtrace_match(tcp))) {
+ if (!(tcp->qual_flg & QUAL_TRACE)
+ || (tracing_paths && !pathtrace_match(tcp))
+ ) {
tcp->flags |= TCB_INSYSCALL | TCB_FILTERED;
return 0;
}
tcp->flags &= ~TCB_FILTERED;
- if (cflag == CFLAG_ONLY_STATS) {
+ if (cflag == CFLAG_ONLY_STATS || hide_log_until_execve) {
res = 0;
goto ret;
}
+#ifdef USE_LIBUNWIND
+ if (stack_trace_enabled) {
+ if (tcp->s_ent->sys_flags & STACKTRACE_CAPTURE_ON_ENTER)
+ unwind_capture_stacktrace(tcp);
+ }
+#endif
+
printleader(tcp);
- if (!SCNO_IN_RANGE(tcp->scno))
- tprintf("syscall_%lu(", tcp->scno);
+ if (tcp->qual_flg & UNDEFINED_SCNO)
+ tprintf("%s(", undefined_scno_name(tcp));
else
- tprintf("%s(", sysent[tcp->scno].sys_name);
- if (!SCNO_IN_RANGE(tcp->scno) ||
- ((qual_flags[tcp->scno] & QUAL_RAW) &&
- sysent[tcp->scno].sys_func != sys_exit))
+ tprintf("%s(", tcp->s_ent->sys_name);
+ if ((tcp->qual_flg & QUAL_RAW) && tcp->s_ent->sys_func != sys_exit)
res = printargs(tcp);
else
- res = (*sysent[tcp->scno].sys_func)(tcp);
+ res = tcp->s_ent->sys_func(tcp);
fflush(tcp->outf);
ret:
get_syscall_result(struct tcb *tcp)
{
#if defined(S390) || defined(S390X)
- if (upeek(tcp, PT_GPR2, &gpr2) < 0)
+ if (upeek(tcp->pid, PT_GPR2, &s390_gpr2) < 0)
return -1;
#elif defined(POWERPC)
-# define SO_MASK 0x10000000
- {
- long flags;
- if (upeek(tcp, sizeof(unsigned long)*PT_CCR, &flags) < 0)
- return -1;
- if (upeek(tcp, sizeof(unsigned long)*PT_R3, &ppc_result) < 0)
- return -1;
- if (flags & SO_MASK)
- ppc_result = -ppc_result;
- }
+ /* already done by get_regs */
#elif defined(AVR32)
/* already done by get_regs */
#elif defined(BFIN)
- if (upeek(tcp, PT_R0, &r0) < 0)
+ if (upeek(tcp->pid, PT_R0, &bfin_r0) < 0)
return -1;
#elif defined(I386)
/* already done by get_regs */
#elif defined(IA64)
# define IA64_PSR_IS ((long)1 << 34)
long psr;
- if (upeek(tcp, PT_CR_IPSR, &psr) >= 0)
- ia32 = (psr & IA64_PSR_IS) != 0;
- if (upeek(tcp, PT_R8, &ia64_r8) < 0)
+ if (upeek(tcp->pid, PT_CR_IPSR, &psr) >= 0)
+ ia64_ia32mode = ((psr & IA64_PSR_IS) != 0);
+ if (upeek(tcp->pid, PT_R8, &ia64_r8) < 0)
return -1;
- if (upeek(tcp, PT_R10, &ia64_r10) < 0)
+ if (upeek(tcp->pid, PT_R10, &ia64_r10) < 0)
return -1;
+#elif defined(ARM)
+ /* already done by get_regs */
#elif defined(AARCH64)
-/* FIXME: uh, why do we do it on syscall *exit*? We did it on entry already... */
+ /* register reading already done by get_regs */
+
+ /* Used to do this, but we did it on syscall entry already: */
/* We are in 64-bit mode (personality 1) if register struct is aarch64_regs,
* else it's personality 0.
*/
- update_personality(tcp, aarch64_io.iov_len == sizeof(aarch64_regs));
-#elif defined(ARM)
- /* already done by get_regs */
+ /*update_personality(tcp, aarch64_io.iov_len == sizeof(aarch64_regs));*/
#elif defined(M68K)
- if (upeek(tcp, 4*PT_D0, &m68k_d0) < 0)
+ if (upeek(tcp->pid, 4*PT_D0, &m68k_d0) < 0)
return -1;
#elif defined(LINUX_MIPSN32)
unsigned long long regs[38];
if (ptrace(PTRACE_GETREGS, tcp->pid, NULL, (long) ®s) < 0)
return -1;
- a3 = regs[REG_A3];
- r2 = regs[REG_V0];
+ mips_a3 = regs[REG_A3];
+ mips_r2 = regs[REG_V0];
#elif defined(MIPS)
- if (upeek(tcp, REG_A3, &a3) < 0)
+ if (upeek(tcp->pid, REG_A3, &mips_a3) < 0)
return -1;
- if (upeek(tcp, REG_V0, &r2) < 0)
+ if (upeek(tcp->pid, REG_V0, &mips_r2) < 0)
return -1;
#elif defined(ALPHA)
- if (upeek(tcp, REG_A3, &a3) < 0)
+ if (upeek(tcp->pid, REG_A3, &alpha_a3) < 0)
return -1;
- if (upeek(tcp, REG_R0, &r0) < 0)
+ if (upeek(tcp->pid, REG_R0, &alpha_r0) < 0)
return -1;
#elif defined(SPARC) || defined(SPARC64)
/* already done by get_regs */
#elif defined(HPPA)
- if (upeek(tcp, PT_GR28, &hppa_r28) < 0)
+ if (upeek(tcp->pid, PT_GR28, &hppa_r28) < 0)
return -1;
#elif defined(SH)
/* new syscall ABI returns result in R0 */
- if (upeek(tcp, 4*REG_REG0, (long *)&r0) < 0)
+ if (upeek(tcp->pid, 4*REG_REG0, (long *)&sh_r0) < 0)
return -1;
#elif defined(SH64)
/* ABI defines result returned in r9 */
- if (upeek(tcp, REG_GENERAL(9), (long *)&sh64_r9) < 0)
+ if (upeek(tcp->pid, REG_GENERAL(9), (long *)&sh64_r9) < 0)
return -1;
#elif defined(CRISV10) || defined(CRISV32)
- if (upeek(tcp, 4*PT_R10, &cris_r10) < 0)
+ if (upeek(tcp->pid, 4*PT_R10, &cris_r10) < 0)
return -1;
#elif defined(TILE)
/* already done by get_regs */
#elif defined(MICROBLAZE)
- if (upeek(tcp, 3 * 4, µblaze_r3) < 0)
+ if (upeek(tcp->pid, 3 * 4, µblaze_r3) < 0)
+ return -1;
+#elif defined(OR1K)
+ /* already done by get_regs */
+#elif defined(METAG)
+ /* already done by get_regs */
+#elif defined(XTENSA)
+ if (upeek(tcp->pid, REG_A_BASE + 2, &xtensa_a2) < 0)
return -1;
+#elif defined(ARC)
+ /* already done by get_regs */
#endif
return 1;
}
syscall_fixup_on_sysexit(struct tcb *tcp)
{
#if defined(S390) || defined(S390X)
- if (syscall_mode != -ENOSYS)
- syscall_mode = tcp->scno;
if ((tcp->flags & TCB_WAITEXECVE)
- && (gpr2 == -ENOSYS || gpr2 == tcp->scno)) {
+ && (s390_gpr2 == -ENOSYS || s390_gpr2 == tcp->scno)) {
/*
* Return from execve.
* Fake a return value of zero. We leave the TCB_WAITEXECVE
* flag set for the post-execve SIGTRAP to see and reset.
*/
- gpr2 = 0;
+ s390_gpr2 = 0;
}
#endif
}
is_negated_errno(unsigned long int val)
{
unsigned long int max = -(long int) nerrnos;
-#if SUPPORTED_PERSONALITIES > 1
+#if SUPPORTED_PERSONALITIES > 1 && SIZEOF_LONG > 4
if (current_wordsize < sizeof(val)) {
val = (unsigned int) val;
max = (unsigned int) max;
return val > max;
}
+#if defined(X32)
+static inline int
+is_negated_errno_x32(unsigned long long val)
+{
+ unsigned long long max = -(long long) nerrnos;
+ /*
+ * current_wordsize is 4 even in personality 0 (native X32)
+ * but truncation _must not_ be done in it.
+ * can't check current_wordsize here!
+ */
+ if (current_personality != 0) {
+ val = (uint32_t) val;
+ max = (uint32_t) max;
+ }
+ return val > max;
+}
+#endif
+
/* Returns:
* 1: ok, continue in trace_syscall_exiting().
* -1: error, trace_syscall_exiting() should print error indicator
* ("????" etc) and bail out.
*/
-static int
+static void
get_error(struct tcb *tcp)
{
int u_error = 0;
int check_errno = 1;
- if (SCNO_IN_RANGE(tcp->scno) &&
- sysent[tcp->scno].sys_flags & SYSCALL_NEVER_FAILS) {
+ if (tcp->s_ent->sys_flags & SYSCALL_NEVER_FAILS) {
check_errno = 0;
}
#if defined(S390) || defined(S390X)
- if (check_errno && is_negated_errno(gpr2)) {
+ if (check_errno && is_negated_errno(s390_gpr2)) {
tcp->u_rval = -1;
- u_error = -gpr2;
+ u_error = -s390_gpr2;
}
else {
- tcp->u_rval = gpr2;
+ tcp->u_rval = s390_gpr2;
}
#elif defined(I386)
if (check_errno && is_negated_errno(i386_regs.eax)) {
else {
tcp->u_rval = i386_regs.eax;
}
-#elif defined(X86_64) || defined(X32)
- if (check_errno && is_negated_errno(x86_64_regs.rax)) {
+#elif defined(X86_64)
+ long rax;
+ if (x86_io.iov_len == sizeof(i386_regs)) {
+ /* Sign extend from 32 bits */
+ rax = (int32_t)i386_regs.eax;
+ } else {
+ rax = x86_64_regs.rax;
+ }
+ if (check_errno && is_negated_errno(rax)) {
tcp->u_rval = -1;
- u_error = -x86_64_regs.rax;
+ u_error = -rax;
}
else {
- tcp->u_rval = x86_64_regs.rax;
-# if defined(X32)
- tcp->u_lrval = x86_64_regs.rax;
-# endif
+ tcp->u_rval = rax;
+ }
+#elif defined(X32)
+ /* In X32, return value is 64-bit (llseek uses one).
+ * Using merely "long rax" would not work.
+ */
+ long long rax;
+ if (x86_io.iov_len == sizeof(i386_regs)) {
+ /* Sign extend from 32 bits */
+ rax = (int32_t)i386_regs.eax;
+ } else {
+ rax = x86_64_regs.rax;
+ }
+ /* Careful: is_negated_errno() works only on longs */
+ if (check_errno && is_negated_errno_x32(rax)) {
+ tcp->u_rval = -1;
+ u_error = -rax;
+ }
+ else {
+ tcp->u_rval = rax; /* truncating */
+ tcp->u_lrval = rax;
}
#elif defined(IA64)
- if (ia32) {
+ if (ia64_ia32mode) {
int err;
err = (int)ia64_r8;
}
}
#elif defined(MIPS)
- if (check_errno && a3) {
+ if (check_errno && mips_a3) {
tcp->u_rval = -1;
- u_error = r2;
+ u_error = mips_r2;
} else {
- tcp->u_rval = r2;
+ tcp->u_rval = mips_r2;
# if defined(LINUX_MIPSN32)
- tcp->u_lrval = r2;
+ tcp->u_lrval = mips_r2;
# endif
}
#elif defined(POWERPC)
- if (check_errno && is_negated_errno(ppc_result)) {
+ if (check_errno && (ppc_regs.ccr & 0x10000000)) {
tcp->u_rval = -1;
- u_error = -ppc_result;
+ u_error = ppc_regs.gpr[3];
}
else {
- tcp->u_rval = ppc_result;
+ tcp->u_rval = ppc_regs.gpr[3];
}
#elif defined(M68K)
if (check_errno && is_negated_errno(m68k_d0)) {
}
}
else
-# endif /* AARCH64 */
+# endif
{
if (check_errno && is_negated_errno(arm_regs.ARM_r0)) {
tcp->u_rval = -1;
}
}
#elif defined(AVR32)
- if (check_errno && regs.r12 && (unsigned) -regs.r12 < nerrnos) {
+ if (check_errno && avr32_regs.r12 && (unsigned) -avr32_regs.r12 < nerrnos) {
tcp->u_rval = -1;
- u_error = -regs.r12;
+ u_error = -avr32_regs.r12;
}
else {
- tcp->u_rval = regs.r12;
+ tcp->u_rval = avr32_regs.r12;
}
#elif defined(BFIN)
- if (check_errno && is_negated_errno(r0)) {
+ if (check_errno && is_negated_errno(bfin_r0)) {
tcp->u_rval = -1;
- u_error = -r0;
+ u_error = -bfin_r0;
} else {
- tcp->u_rval = r0;
+ tcp->u_rval = bfin_r0;
}
#elif defined(ALPHA)
if (check_errno && alpha_a3) {
tcp->u_rval = -1;
- u_error = r0;
+ u_error = alpha_r0;
}
else {
- tcp->u_rval = r0;
+ tcp->u_rval = alpha_r0;
}
#elif defined(SPARC)
- if (check_errno && regs.psr & PSR_C) {
+ if (check_errno && sparc_regs.psr & PSR_C) {
tcp->u_rval = -1;
- u_error = regs.u_regs[U_REG_O0];
+ u_error = sparc_regs.u_regs[U_REG_O0];
}
else {
- tcp->u_rval = regs.u_regs[U_REG_O0];
+ tcp->u_rval = sparc_regs.u_regs[U_REG_O0];
}
#elif defined(SPARC64)
- if (check_errno && regs.tstate & 0x1100000000UL) {
+ if (check_errno && sparc_regs.tstate & 0x1100000000UL) {
tcp->u_rval = -1;
- u_error = regs.u_regs[U_REG_O0];
+ u_error = sparc_regs.u_regs[U_REG_O0];
}
else {
- tcp->u_rval = regs.u_regs[U_REG_O0];
+ tcp->u_rval = sparc_regs.u_regs[U_REG_O0];
}
#elif defined(HPPA)
if (check_errno && is_negated_errno(hppa_r28)) {
tcp->u_rval = hppa_r28;
}
#elif defined(SH)
- if (check_errno && is_negated_errno(r0)) {
+ if (check_errno && is_negated_errno(sh_r0)) {
tcp->u_rval = -1;
- u_error = -r0;
+ u_error = -sh_r0;
}
else {
- tcp->u_rval = r0;
+ tcp->u_rval = sh_r0;
}
#elif defined(SH64)
if (check_errno && is_negated_errno(sh64_r9)) {
else {
tcp->u_rval = sh64_r9;
}
+#elif defined(METAG)
+ /* result pointer in D0Re0 (D0.0) */
+ if (check_errno && is_negated_errno(metag_regs.dx[0][0])) {
+ tcp->u_rval = -1;
+ u_error = -metag_regs.dx[0][0];
+ }
+ else {
+ tcp->u_rval = metag_regs.dx[0][0];
+ }
#elif defined(CRISV10) || defined(CRISV32)
if (check_errno && cris_r10 && (unsigned) -cris_r10 < nerrnos) {
tcp->u_rval = -1;
else {
tcp->u_rval = microblaze_r3;
}
+#elif defined(OR1K)
+ if (check_errno && is_negated_errno(or1k_regs.gpr[11])) {
+ tcp->u_rval = -1;
+ u_error = -or1k_regs.gpr[11];
+ }
+ else {
+ tcp->u_rval = or1k_regs.gpr[11];
+ }
+#elif defined(XTENSA)
+ if (check_errno && is_negated_errno(xtensa_a2)) {
+ tcp->u_rval = -1;
+ u_error = -xtensa_a2;
+ }
+ else {
+ tcp->u_rval = xtensa_a2;
+ }
+#elif defined(ARC)
+ if (check_errno && is_negated_errno(arc_regs.scratch.r0)) {
+ tcp->u_rval = -1;
+ u_error = -arc_regs.scratch.r0;
+ }
+ else {
+ tcp->u_rval = arc_regs.scratch.r0;
+ }
#endif
tcp->u_error = u_error;
- return 1;
}
static void
dumpio(struct tcb *tcp)
{
+ int (*func)();
+
if (syserror(tcp))
return;
- if (tcp->u_arg[0] < 0 || tcp->u_arg[0] >= MAX_QUALS)
- return;
- if (!SCNO_IN_RANGE(tcp->scno))
+ if ((unsigned long) tcp->u_arg[0] >= num_quals)
return;
- if (sysent[tcp->scno].sys_func == printargs)
+ func = tcp->s_ent->sys_func;
+ if (func == printargs)
return;
if (qual_flags[tcp->u_arg[0]] & QUAL_READ) {
- if (sysent[tcp->scno].sys_func == sys_read ||
- sysent[tcp->scno].sys_func == sys_pread ||
- sysent[tcp->scno].sys_func == sys_recv ||
- sysent[tcp->scno].sys_func == sys_recvfrom)
+ if (func == sys_read ||
+ func == sys_pread ||
+ func == sys_recv ||
+ func == sys_recvfrom)
dumpstr(tcp, tcp->u_arg[1], tcp->u_rval);
- else if (sysent[tcp->scno].sys_func == sys_readv)
+ else if (func == sys_readv)
dumpiov(tcp, tcp->u_arg[2], tcp->u_arg[1]);
return;
}
if (qual_flags[tcp->u_arg[0]] & QUAL_WRITE) {
- if (sysent[tcp->scno].sys_func == sys_write ||
- sysent[tcp->scno].sys_func == sys_pwrite ||
- sysent[tcp->scno].sys_func == sys_send ||
- sysent[tcp->scno].sys_func == sys_sendto)
+ if (func == sys_write ||
+ func == sys_pwrite ||
+ func == sys_send ||
+ func == sys_sendto)
dumpstr(tcp, tcp->u_arg[1], tcp->u_arg[2]);
- else if (sysent[tcp->scno].sys_func == sys_writev)
+ else if (func == sys_writev)
dumpiov(tcp, tcp->u_arg[2], tcp->u_arg[1]);
return;
}
if (Tflag || cflag)
gettimeofday(&tv, NULL);
+#ifdef USE_LIBUNWIND
+ if (stack_trace_enabled) {
+ if (tcp->s_ent->sys_flags & STACKTRACE_INVALIDATE_CACHE)
+ unwind_cache_invalidate(tcp);
+ }
+#endif
+
#if SUPPORTED_PERSONALITIES > 1
update_personality(tcp, tcp->currpers);
#endif
res = (get_regs_error ? -1 : get_syscall_result(tcp));
if (res == 1) {
syscall_fixup_on_sysexit(tcp); /* never fails */
- res = get_error(tcp); /* returns 1 or -1 */
- if (res == 1) {
- if (need_fork_exec_workarounds)
- syscall_fixup_for_fork_exec(tcp);
- if (filtered(tcp)) {
- goto ret;
- }
- }
+ get_error(tcp); /* never fails */
+ if (need_fork_exec_workarounds)
+ syscall_fixup_for_fork_exec(tcp);
+ if (filtered(tcp) || hide_log_until_execve)
+ goto ret;
}
if (cflag) {
- struct timeval t = tv;
- count_syscall(tcp, &t);
+ count_syscall(tcp, &tv);
if (cflag == CFLAG_ONLY_STATS) {
goto ret;
}
if ((followfork < 2 && printing_tcp != tcp) || (tcp->flags & TCB_REPRINT)) {
tcp->flags &= ~TCB_REPRINT;
printleader(tcp);
- if (!SCNO_IN_RANGE(tcp->scno))
- tprintf("<... syscall_%lu resumed> ", tcp->scno);
+ if (tcp->qual_flg & UNDEFINED_SCNO)
+ tprintf("<... %s resumed> ", undefined_scno_name(tcp));
else
- tprintf("<... %s resumed> ", sysent[tcp->scno].sys_name);
+ tprintf("<... %s resumed> ", tcp->s_ent->sys_name);
}
printing_tcp = tcp;
}
sys_res = 0;
- if (!SCNO_IN_RANGE(tcp->scno)
- || (qual_flags[tcp->scno] & QUAL_RAW)) {
+ if (tcp->qual_flg & QUAL_RAW) {
/* sys_res = printargs(tcp); - but it's nop on sysexit */
} else {
/* FIXME: not_failing_only (IOW, option -z) is broken:
*/
if (not_failing_only && tcp->u_error)
goto ret; /* ignore failed syscalls */
- sys_res = (*sysent[tcp->scno].sys_func)(tcp);
+ sys_res = tcp->s_ent->sys_func(tcp);
}
tprints(") ");
tabto();
u_error = tcp->u_error;
- if (!SCNO_IN_RANGE(tcp->scno) ||
- qual_flags[tcp->scno] & QUAL_RAW) {
+ if (tcp->qual_flg & QUAL_RAW) {
if (u_error)
tprintf("= -1 (errno %ld)", u_error);
else
/* pause(), rt_sigsuspend() etc use this code.
* SA_RESTART is ignored (assumed not set):
* syscall won't restart (will return EINTR instead)
- * even after signal with SA_RESTART set.
- * However, after SIG_IGN or SIG_DFL signal it will.
+ * even after signal with SA_RESTART set. However,
+ * after SIG_IGN or SIG_DFL signal it will restart
+ * (thus the name "restart only if has no handler").
*/
- tprints("= ? ERESTARTNOHAND (Interrupted by signal)");
+ tprints("= ? ERESTARTNOHAND (To be restarted if no handler)");
break;
case ERESTART_RESTARTBLOCK:
/* Syscalls like nanosleep(), poll() which can't be
default:
if (u_error < 0)
tprintf("= -1 E??? (errno %ld)", u_error);
- else if (u_error < nerrnos)
+ else if ((unsigned long) u_error < nerrnos)
tprintf("= -1 %s (%s)", errnoent[u_error],
strerror(u_error));
else
case RVAL_DECIMAL:
tprintf("= %ld", tcp->u_rval);
break;
+ case RVAL_FD:
+ if (show_fd_path) {
+ tprints("= ");
+ printfd(tcp, tcp->u_rval);
+ }
+ else
+ tprintf("= %ld", tcp->u_rval);
+ break;
#if defined(LINUX_MIPSN32) || defined(X32)
/*
case RVAL_LHEX:
dumpio(tcp);
line_ended();
+#ifdef USE_LIBUNWIND
+ if (stack_trace_enabled)
+ unwind_print_stacktrace(tcp);
+#endif
+
ret:
tcp->flags &= ~TCB_INSYSCALL;
return 0;
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