-#include <stdio.h>
-#include <errno.h>
+/*
+ * System call tracing and debugging
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "qemu/osdep.h"
#include <sys/select.h>
-#include <sys/types.h>
-#include <unistd.h>
#include <sys/syscall.h>
+#include <sys/ioccom.h>
+
#include "qemu.h"
-int do_strace=0;
+#include "os-strace.h" /* OS dependent strace print functions */
-struct syscallname {
- int nr;
- const char *name;
- const char *format;
- void (*call)(const struct syscallname *,
- abi_long, abi_long, abi_long,
- abi_long, abi_long, abi_long);
- void (*result)(const struct syscallname *, abi_long);
-};
+int do_strace;
/*
* Utility functions
*/
+static const char *
+get_comma(int last)
+{
+ return (last) ? "" : ",";
+}
+/*
+ * Prints out raw parameter using given format. Caller needs
+ * to do byte swapping if needed.
+ */
static void
-print_execve(const struct syscallname *name,
- abi_long arg1, abi_long arg2, abi_long arg3,
- abi_long arg4, abi_long arg5, abi_long arg6)
+print_raw_param(const char *fmt, abi_long param, int last)
+{
+ char format[64];
+
+ (void)snprintf(format, sizeof(format), "%s%s", fmt, get_comma(last));
+ gemu_log(format, param);
+}
+
+static void print_sysctl(const struct syscallname *name, abi_long arg1,
+ abi_long arg2, abi_long arg3, abi_long arg4, abi_long arg5,
+ abi_long arg6)
+{
+ uint32_t i;
+ int32_t *namep;
+
+ gemu_log("%s({ ", name->name);
+ namep = lock_user(VERIFY_READ, arg1, sizeof(int32_t) * arg2, 1);
+ if (namep) {
+ int32_t *p = namep;
+
+ for (i = 0; i < (uint32_t)arg2; i++) {
+ gemu_log("%d ", tswap32(*p++));
+ }
+ unlock_user(namep, arg1, 0);
+ }
+ gemu_log("}, %u, 0x" TARGET_ABI_FMT_lx ", 0x" TARGET_ABI_FMT_lx ", 0x"
+ TARGET_ABI_FMT_lx ", 0x" TARGET_ABI_FMT_lx ")",
+ (uint32_t)arg2, arg3, arg4, arg5, arg6);
+}
+
+static void print_execve(const struct syscallname *name, abi_long arg1,
+ abi_long arg2, abi_long arg3, abi_long arg4, abi_long arg5,
+ abi_long arg6)
{
abi_ulong arg_ptr_addr;
char *s;
- if (!(s = lock_user_string(arg1)))
+ s = lock_user_string(arg1);
+ if (s == NULL) {
return;
+ }
gemu_log("%s(\"%s\",{", name->name, s);
unlock_user(s, arg1, 0);
for (arg_ptr_addr = arg2; ; arg_ptr_addr += sizeof(abi_ulong)) {
- abi_ulong *arg_ptr, arg_addr, s_addr;
+ abi_ulong *arg_ptr, arg_addr;
arg_ptr = lock_user(VERIFY_READ, arg_ptr_addr, sizeof(abi_ulong), 1);
- if (!arg_ptr)
+ if (!arg_ptr) {
return;
+ }
arg_addr = tswapl(*arg_ptr);
unlock_user(arg_ptr, arg_ptr_addr, 0);
- if (!arg_addr)
+ if (!arg_addr) {
break;
+ }
if ((s = lock_user_string(arg_addr))) {
gemu_log("\"%s\",", s);
- unlock_user(s, s_addr, 0);
+ unlock_user(s, arg_addr, 0);
}
}
-
gemu_log("NULL})");
}
+static void print_ioctl(const struct syscallname *name,
+ abi_long arg1, abi_long arg2, abi_long arg3, abi_long arg4,
+ abi_long arg5, abi_long arg6)
+{
+ /* Decode the ioctl request */
+ gemu_log("%s(%d, 0x%0lx { IO%s%s GRP:0x%x('%c') CMD:%d LEN:%d }, 0x"
+ TARGET_ABI_FMT_lx ", ...)",
+ name->name,
+ (int)arg1,
+ (unsigned long)arg2,
+ arg2 & IOC_OUT ? "R" : "",
+ arg2 & IOC_IN ? "W" : "",
+ (unsigned)IOCGROUP(arg2),
+ isprint(IOCGROUP(arg2)) ? (char)IOCGROUP(arg2) : '?',
+ (int)arg2 & 0xFF,
+ (int)IOCPARM_LEN(arg2),
+ arg3);
+}
+
+static void print_sysarch(const struct syscallname *name, abi_long arg1,
+ abi_long arg2, abi_long arg3, abi_long arg4, abi_long arg5,
+ abi_long arg6)
+{
+ /* This is os dependent. */
+ do_os_print_sysarch(name, arg1, arg2, arg3, arg4, arg5, arg6);
+}
+
/*
* Variants for the return value output function
*/
-static void
-print_syscall_ret_addr(const struct syscallname *name, abi_long ret)
+static void print_syscall_ret_addr(const struct syscallname *name, abi_long ret)
{
-if( ret == -1 ) {
+ if (ret == -1) {
gemu_log(" = -1 errno=%d (%s)\n", errno, strerror(errno));
} else {
gemu_log(" = 0x" TARGET_ABI_FMT_lx "\n", ret);
}
}
-#if 0 /* currently unused */
-static void
-print_syscall_ret_raw(struct syscallname *name, abi_long ret)
-{
- gemu_log(" = 0x" TARGET_ABI_FMT_lx "\n", ret);
-}
-#endif
-
/*
* An array of all of the syscalls we know about
*/
#include "openbsd/strace.list"
};
-static void
-print_syscall(int num, const struct syscallname *scnames, unsigned int nscnames,
- abi_long arg1, abi_long arg2, abi_long arg3,
- abi_long arg4, abi_long arg5, abi_long arg6)
+static void print_syscall(int num, const struct syscallname *scnames,
+ unsigned int nscnames, abi_long arg1, abi_long arg2, abi_long arg3,
+ abi_long arg4, abi_long arg5, abi_long arg6)
{
unsigned int i;
const char *format="%s(" TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld ","
gemu_log("%d ", getpid() );
- for (i = 0; i < nscnames; i++)
+ for (i = 0; i < nscnames; i++) {
if (scnames[i].nr == num) {
if (scnames[i].call != NULL) {
scnames[i].call(&scnames[i], arg1, arg2, arg3, arg4, arg5,
- arg6);
+ arg6);
} else {
/* XXX: this format system is broken because it uses
host types and host pointers for strings */
- if (scnames[i].format != NULL)
+ if (scnames[i].format != NULL) {
format = scnames[i].format;
- gemu_log(format, scnames[i].name, arg1, arg2, arg3, arg4,
- arg5, arg6);
+ }
+ gemu_log(format, scnames[i].name, arg1, arg2, arg3, arg4, arg5,
+ arg6);
}
return;
}
+ }
gemu_log("Unknown syscall %d\n", num);
}
-static void
-print_syscall_ret(int num, abi_long ret, const struct syscallname *scnames,
- unsigned int nscnames)
+static void print_syscall_ret(int num, abi_long ret,
+ const struct syscallname *scnames, unsigned int nscnames)
{
unsigned int i;
- for (i = 0; i < nscnames; i++)
+ for (i = 0; i < nscnames; i++) {
if (scnames[i].nr == num) {
if (scnames[i].result != NULL) {
scnames[i].result(&scnames[i], ret);
} else {
- if( ret < 0 ) {
+ if (ret < 0) {
gemu_log(" = -1 errno=" TARGET_ABI_FMT_ld " (%s)\n", -ret,
strerror(-ret));
} else {
}
break;
}
+ }
}
/*
* The public interface to this module.
*/
-void
-print_freebsd_syscall(int num,
- abi_long arg1, abi_long arg2, abi_long arg3,
- abi_long arg4, abi_long arg5, abi_long arg6)
+void print_freebsd_syscall(int num, abi_long arg1, abi_long arg2, abi_long arg3,
+ abi_long arg4, abi_long arg5, abi_long arg6)
{
- print_syscall(num, freebsd_scnames, ARRAY_SIZE(freebsd_scnames),
- arg1, arg2, arg3, arg4, arg5, arg6);
+
+ print_syscall(num, freebsd_scnames, ARRAY_SIZE(freebsd_scnames), arg1, arg2,
+ arg3, arg4, arg5, arg6);
}
-void
-print_freebsd_syscall_ret(int num, abi_long ret)
+void print_freebsd_syscall_ret(int num, abi_long ret)
{
+
print_syscall_ret(num, ret, freebsd_scnames, ARRAY_SIZE(freebsd_scnames));
}
-void
-print_netbsd_syscall(int num,
- abi_long arg1, abi_long arg2, abi_long arg3,
- abi_long arg4, abi_long arg5, abi_long arg6)
+void print_netbsd_syscall(int num, abi_long arg1, abi_long arg2, abi_long arg3,
+ abi_long arg4, abi_long arg5, abi_long arg6)
{
+
print_syscall(num, netbsd_scnames, ARRAY_SIZE(netbsd_scnames),
arg1, arg2, arg3, arg4, arg5, arg6);
}
-void
-print_netbsd_syscall_ret(int num, abi_long ret)
+void print_netbsd_syscall_ret(int num, abi_long ret)
{
+
print_syscall_ret(num, ret, netbsd_scnames, ARRAY_SIZE(netbsd_scnames));
}
-void
-print_openbsd_syscall(int num,
- abi_long arg1, abi_long arg2, abi_long arg3,
- abi_long arg4, abi_long arg5, abi_long arg6)
+void print_openbsd_syscall(int num, abi_long arg1, abi_long arg2, abi_long arg3,
+ abi_long arg4, abi_long arg5, abi_long arg6)
{
- print_syscall(num, openbsd_scnames, ARRAY_SIZE(openbsd_scnames),
- arg1, arg2, arg3, arg4, arg5, arg6);
+
+ print_syscall(num, openbsd_scnames, ARRAY_SIZE(openbsd_scnames), arg1, arg2,
+ arg3, arg4, arg5, arg6);
}
-void
-print_openbsd_syscall_ret(int num, abi_long ret)
+void print_openbsd_syscall_ret(int num, abi_long ret)
{
+
print_syscall_ret(num, ret, openbsd_scnames, ARRAY_SIZE(openbsd_scnames));
}
+
+static void
+print_signal(abi_ulong arg, int last)
+{
+ const char *signal_name = NULL;
+ switch (arg) {
+ case TARGET_SIGHUP:
+ signal_name = "SIGHUP";
+ break;
+ case TARGET_SIGINT:
+ signal_name = "SIGINT";
+ break;
+ case TARGET_SIGQUIT:
+ signal_name = "SIGQUIT";
+ break;
+ case TARGET_SIGILL:
+ signal_name = "SIGILL";
+ break;
+ case TARGET_SIGABRT:
+ signal_name = "SIGABRT";
+ break;
+ case TARGET_SIGFPE:
+ signal_name = "SIGFPE";
+ break;
+ case TARGET_SIGKILL:
+ signal_name = "SIGKILL";
+ break;
+ case TARGET_SIGSEGV:
+ signal_name = "SIGSEGV";
+ break;
+ case TARGET_SIGPIPE:
+ signal_name = "SIGPIPE";
+ break;
+ case TARGET_SIGALRM:
+ signal_name = "SIGALRM";
+ break;
+ case TARGET_SIGTERM:
+ signal_name = "SIGTERM";
+ break;
+ case TARGET_SIGUSR1:
+ signal_name = "SIGUSR1";
+ break;
+ case TARGET_SIGUSR2:
+ signal_name = "SIGUSR2";
+ break;
+ case TARGET_SIGCHLD:
+ signal_name = "SIGCHLD";
+ break;
+ case TARGET_SIGCONT:
+ signal_name = "SIGCONT";
+ break;
+ case TARGET_SIGSTOP:
+ signal_name = "SIGSTOP";
+ break;
+ case TARGET_SIGTTIN:
+ signal_name = "SIGTTIN";
+ break;
+ case TARGET_SIGTTOU:
+ signal_name = "SIGTTOU";
+ break;
+ }
+ if (signal_name == NULL) {
+ print_raw_param("%ld", arg, last);
+ return;
+ }
+ gemu_log("%s%s", signal_name, get_comma(last));
+}
+
+void print_taken_signal(int target_signum, const target_siginfo_t *tinfo)
+{
+ /*
+ * Print the strace output for a signal being taken:
+ * --- SIGSEGV {si_signo=SIGSEGV, si_code=SI_KERNEL, si_addr=0} ---
+ */
+ gemu_log("%d ", getpid());
+ gemu_log("--- ");
+ print_signal(target_signum, 1);
+ gemu_log(" ---\n");
+}
projects / mirror_qemu.git / blobdiff