Add new files fir strace support, missed in earlier commit.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3504 c046a42c-6fe2-441c-8c8c-71466251a162

linux-user/strace.c

@@ -0,0 +1,299 @@
+#include <stdio.h>
+#include <errno.h>
+#include <sys/ipc.h>
+#include <sys/msg.h>
+#include <sys/sem.h>
+#include <sys/shm.h>
+#include <sys/select.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include "qemu.h"
+
+int do_strace=0;
+
+struct syscallname {
+    int nr;
+    char *name;
+    char *format;
+    void (*call)(struct syscallname *,
+                 target_long, target_long, target_long,
+                 target_long, target_long, target_long);
+    void (*result)(struct syscallname *, target_long);
+};
+
+/*
+ * Utility functions
+ */
+static void
+print_ipc_cmd(int cmd)
+{
+#define output_cmd(val) \
+if( cmd == val ) { \
+    gemu_log(#val); \
+    return; \
+}
+
+    cmd &= 0xff;
+
+    /* General IPC commands */
+    output_cmd( IPC_RMID );
+    output_cmd( IPC_SET );
+    output_cmd( IPC_STAT );
+    output_cmd( IPC_INFO );
+    /* msgctl() commands */
+    #ifdef __USER_MISC
+    output_cmd( MSG_STAT );
+    output_cmd( MSG_INFO );
+    #endif
+    /* shmctl() commands */
+    output_cmd( SHM_LOCK );
+    output_cmd( SHM_UNLOCK );
+    output_cmd( SHM_STAT );
+    output_cmd( SHM_INFO );
+    /* semctl() commands */
+    output_cmd( GETPID );
+    output_cmd( GETVAL );
+    output_cmd( GETALL );
+    output_cmd( GETNCNT );
+    output_cmd( GETZCNT );
+    output_cmd( SETVAL );
+    output_cmd( SETALL );
+    output_cmd( SEM_STAT );
+    output_cmd( SEM_INFO );
+    output_cmd( IPC_RMID );
+    output_cmd( IPC_RMID );
+    output_cmd( IPC_RMID );
+    output_cmd( IPC_RMID );
+    output_cmd( IPC_RMID );
+    output_cmd( IPC_RMID );
+    output_cmd( IPC_RMID );
+    output_cmd( IPC_RMID );
+    output_cmd( IPC_RMID );
+
+    /* Some value we don't recognize */
+    gemu_log("%d",cmd);
+}
+
+static void
+print_fdset(int n, target_ulong target_fds_addr)
+{
+    int i;
+
+    gemu_log("[");
+    if( target_fds_addr ) {
+        target_long *target_fds;
+
+        if (!access_ok(VERIFY_READ, target_fds_addr, sizeof(*target_fds)*(n / TARGET_LONG_BITS + 1)))
+            return;
+
+        target_fds = lock_user(target_fds_addr, sizeof(*target_fds)*(n / TARGET_LONG_BITS + 1), 1);
+        for (i=n; i>=0; i--) {
+            if ((tswapl(target_fds[i / TARGET_LONG_BITS]) >> (i & (TARGET_LONG_BITS - 1))) & 1)
+                gemu_log("%d,", i );
+            }
+        unlock_user(target_fds, target_fds_addr, 0);
+    }
+    gemu_log("]");
+}
+
+static void
+print_timeval(target_ulong tv_addr)
+{
+    if( tv_addr ) {
+        struct target_timeval *tv;
+
+	if (!access_ok(VERIFY_READ, tv_addr, sizeof(*tv)))
+            return;
+
+	tv = lock_user(tv_addr, sizeof(*tv), 1);
+        gemu_log("{%d,%d}", tv->tv_sec, tv->tv_usec);
+        unlock_user(tv, tv_addr, 0);
+    } else
+        gemu_log("NULL");
+}
+
+/*
+ * Sysycall specific output functions
+ */
+
+/* select */
+static long newselect_arg1 = 0;
+static long newselect_arg2 = 0;
+static long newselect_arg3 = 0;
+static long newselect_arg4 = 0;
+static long newselect_arg5 = 0;
+
+static void
+print_newselect(struct syscallname *name,
+                target_long arg1, target_long arg2, target_long arg3,
+                target_long arg4, target_long arg5, target_long arg6)
+{
+    gemu_log("%s(" TARGET_FMT_ld ",", name->name, arg1);
+    print_fdset(arg1, arg2);
+    gemu_log(",");
+    print_fdset(arg1, arg3);
+    gemu_log(",");
+    print_fdset(arg1, arg4);
+    gemu_log(",");
+    print_timeval(arg5);
+    gemu_log(")");
+
+    /* save for use in the return output function below */
+    newselect_arg1=arg1;
+    newselect_arg2=arg2;
+    newselect_arg3=arg3;
+    newselect_arg4=arg4;
+    newselect_arg5=arg5;
+}
+
+static void
+print_semctl(struct syscallname *name,
+             target_long arg1, target_long arg2, target_long arg3,
+             target_long arg4, target_long arg5, target_long arg6)
+{
+    gemu_log("%s(" TARGET_FMT_ld "," TARGET_FMT_ld ",", name->name, arg1, arg2);
+    print_ipc_cmd(arg3);
+    gemu_log(",0x" TARGET_FMT_lx ")", arg4);
+}
+
+static void
+print_execve(struct syscallname *name,
+             target_long arg1, target_long arg2, target_long arg3,
+             target_long arg4, target_long arg5, target_long arg6)
+{
+    target_ulong arg_ptr_addr;
+    char *s;
+
+    if (!access_ok(VERIFY_READ, arg1, 1))
+        return;
+
+    s = lock_user_string(arg1);
+    gemu_log("%s(\"%s\",{", name->name, s);
+    unlock_user(s, arg1, 0);
+
+    for (arg_ptr_addr = arg2; ; arg_ptr_addr += sizeof(target_ulong)) {
+        target_ulong *arg_ptr, arg_addr, s_addr;
+
+        if (!access_ok(VERIFY_READ, arg_ptr_addr, sizeof(target_ulong)))
+            return;
+
+	arg_ptr = lock_user(arg_ptr_addr, sizeof(target_ulong), 1);
+	arg_addr = tswapl(*arg_ptr);
+	unlock_user(arg_ptr, arg_ptr_addr, 0);
+        if (!arg_addr)
+            break;
+        s = lock_user_string(arg_addr);
+        gemu_log("\"%s\",", s);
+        unlock_user(s, s_addr, 0);
+    }
+
+    gemu_log("NULL})");
+}
+
+static void
+print_ipc(struct syscallname *name,
+          target_long arg1, target_long arg2, target_long arg3,
+          target_long arg4, target_long arg5, target_long arg6)
+{
+    switch(arg1) {
+    case IPCOP_semctl:
+        name->name = "semctl";
+        print_semctl(name,arg2,arg3,arg4,arg5,arg6,0);
+        break;
+    default:
+        gemu_log("%s(" TARGET_FMT_ld "," TARGET_FMT_ld "," TARGET_FMT_ld "," TARGET_FMT_ld ")",
+                 name->name, arg1, arg2, arg3, arg4);
+    }
+}
+
+/*
+ * Variants for the return value output function
+ */
+
+static void
+print_syscall_ret_addr(struct syscallname *name, target_long ret)
+{
+if( ret == -1 ) {
+        gemu_log(" = -1 errno=%d (%s)\n", errno, target_strerror(errno));
+    } else {
+        gemu_log(" = " TARGET_FMT_lx "\n", ret);
+    }
+}
+
+static void
+print_syscall_ret_raw(struct syscallname *name, target_long ret)
+{
+        gemu_log(" = " TARGET_FMT_lx "\n", ret);
+}
+
+static void
+print_syscall_ret_newselect(struct syscallname *name, target_long ret)
+{
+    gemu_log(" = " TARGET_FMT_lx " (", ret);
+    print_fdset(newselect_arg1,newselect_arg2);
+    gemu_log(",");
+    print_fdset(newselect_arg1,newselect_arg3);
+    gemu_log(",");
+    print_fdset(newselect_arg1,newselect_arg4);
+    gemu_log(",");
+    print_timeval(newselect_arg5);
+    gemu_log(")\n");
+}
+
+/*
+ * An array of all of the syscalls we know about
+ */
+
+static struct syscallname scnames[] = {
+#include "strace.list"
+};
+
+static int nsyscalls = sizeof(scnames)/sizeof(struct syscallname);
+
+/*
+ * The public interface to this module.
+ */
+void
+print_syscall(int num,
+              target_long arg1, target_long arg2, target_long arg3,
+              target_long arg4, target_long arg5, target_long arg6)
+{
+    int i;
+    char *format="%s(%ld,%ld,%ld,%ld,%ld,%ld)";
+
+    gemu_log("%d ", getpid() );
+
+    for(i=0;i<nsyscalls;i++)
+        if( scnames[i].nr == num ) {
+            if( scnames[i].call != NULL ) {
+                scnames[i].call(&scnames[i],arg1,arg2,arg3,arg4,arg5,arg6);
+            } else {
+                if( scnames[i].format != NULL )
+                    format = scnames[i].format;
+                gemu_log(format,scnames[i].name, arg1,arg2,arg3,arg4,arg5,arg6);
+            }
+            break;
+        }
+}
+
+
+void
+print_syscall_ret(int num, target_long ret)
+{
+    int i;
+
+    for(i=0;i<nsyscalls;i++)
+        if( scnames[i].nr == num ) {
+            if( scnames[i].result != NULL ) {
+                scnames[i].result(&scnames[i],ret);
+            } else {
+                if( ret < 0 ) {
+                    gemu_log(" = -1 errno=%d (%s)\n", -ret, target_strerror(-ret));
+                } else {
+                    gemu_log(" = %d\n", ret);
+                }
+            }
+            break;
+        }
+}
+