diff --git a/linux-user/strace.c b/linux-user/strace.c
index def92c4d73..aa5539f468 100644
--- a/linux-user/strace.c
+++ b/linux-user/strace.c
@@ -78,7 +78,9 @@ UNUSED static void print_string(abi_long, int);
 UNUSED static void print_buf(abi_long addr, abi_long len, int last);
 UNUSED static void print_raw_param(const char *, abi_long, int);
 UNUSED static void print_timeval(abi_ulong, int);
+UNUSED static void print_timespec(abi_ulong, int);
 UNUSED static void print_timezone(abi_ulong, int);
+UNUSED static void print_itimerval(abi_ulong, int);
 UNUSED static void print_number(abi_long, int);
 UNUSED static void print_signal(abi_ulong, int);
 UNUSED static void print_sockaddr(abi_ulong, abi_long, int);
@@ -578,69 +580,6 @@ print_fdset(int n, abi_ulong target_fds_addr)
 }
 #endif
 
-#ifdef TARGET_NR_clock_adjtime
-/* IDs of the various system clocks */
-#define TARGET_CLOCK_REALTIME              0
-#define TARGET_CLOCK_MONOTONIC             1
-#define TARGET_CLOCK_PROCESS_CPUTIME_ID    2
-#define TARGET_CLOCK_THREAD_CPUTIME_ID     3
-#define TARGET_CLOCK_MONOTONIC_RAW         4
-#define TARGET_CLOCK_REALTIME_COARSE       5
-#define TARGET_CLOCK_MONOTONIC_COARSE      6
-#define TARGET_CLOCK_BOOTTIME              7
-#define TARGET_CLOCK_REALTIME_ALARM        8
-#define TARGET_CLOCK_BOOTTIME_ALARM        9
-#define TARGET_CLOCK_SGI_CYCLE             10
-#define TARGET_CLOCK_TAI                   11
-
-static void
-print_clockid(int clockid, int last)
-{
-    switch (clockid) {
-    case TARGET_CLOCK_REALTIME:
-        qemu_log("CLOCK_REALTIME");
-        break;
-    case TARGET_CLOCK_MONOTONIC:
-        qemu_log("CLOCK_MONOTONIC");
-        break;
-    case TARGET_CLOCK_PROCESS_CPUTIME_ID:
-        qemu_log("CLOCK_PROCESS_CPUTIME_ID");
-        break;
-    case TARGET_CLOCK_THREAD_CPUTIME_ID:
-        qemu_log("CLOCK_THREAD_CPUTIME_ID");
-        break;
-    case TARGET_CLOCK_MONOTONIC_RAW:
-        qemu_log("CLOCK_MONOTONIC_RAW");
-        break;
-    case TARGET_CLOCK_REALTIME_COARSE:
-        qemu_log("CLOCK_REALTIME_COARSE");
-        break;
-    case TARGET_CLOCK_MONOTONIC_COARSE:
-        qemu_log("CLOCK_MONOTONIC_COARSE");
-        break;
-    case TARGET_CLOCK_BOOTTIME:
-        qemu_log("CLOCK_BOOTTIME");
-        break;
-    case TARGET_CLOCK_REALTIME_ALARM:
-        qemu_log("CLOCK_REALTIME_ALARM");
-        break;
-    case TARGET_CLOCK_BOOTTIME_ALARM:
-        qemu_log("CLOCK_BOOTTIME_ALARM");
-        break;
-    case TARGET_CLOCK_SGI_CYCLE:
-        qemu_log("CLOCK_SGI_CYCLE");
-        break;
-    case TARGET_CLOCK_TAI:
-        qemu_log("CLOCK_TAI");
-        break;
-    default:
-        qemu_log("%d", clockid);
-        break;
-    }
-    qemu_log("%s", get_comma(last));
-}
-#endif
-
 /*
  * Sysycall specific output functions
  */
@@ -839,6 +778,81 @@ print_syscall_ret_adjtimex(void *cpu_env, const struct syscallname *name,
 }
 #endif
 
+#if defined(TARGET_NR_clock_gettime) || defined(TARGET_NR_clock_getres)
+static void
+print_syscall_ret_clock_gettime(void *cpu_env, const struct syscallname *name,
+                                abi_long ret, abi_long arg0, abi_long arg1,
+                                abi_long arg2, abi_long arg3, abi_long arg4,
+                                abi_long arg5)
+{
+    if (!print_syscall_err(ret)) {
+        qemu_log(TARGET_ABI_FMT_ld, ret);
+        qemu_log(" (");
+        print_timespec(arg1, 1);
+        qemu_log(")");
+    }
+
+    qemu_log("\n");
+}
+#define print_syscall_ret_clock_getres     print_syscall_ret_clock_gettime
+#endif
+
+#ifdef TARGET_NR_gettimeofday
+static void
+print_syscall_ret_gettimeofday(void *cpu_env, const struct syscallname *name,
+                               abi_long ret, abi_long arg0, abi_long arg1,
+                               abi_long arg2, abi_long arg3, abi_long arg4,
+                               abi_long arg5)
+{
+    if (!print_syscall_err(ret)) {
+        qemu_log(TARGET_ABI_FMT_ld, ret);
+        qemu_log(" (");
+        print_timeval(arg0, 0);
+        print_timezone(arg1, 1);
+        qemu_log(")");
+    }
+
+    qemu_log("\n");
+}
+#endif
+
+#ifdef TARGET_NR_getitimer
+static void
+print_syscall_ret_getitimer(void *cpu_env, const struct syscallname *name,
+                            abi_long ret, abi_long arg0, abi_long arg1,
+                            abi_long arg2, abi_long arg3, abi_long arg4,
+                            abi_long arg5)
+{
+    if (!print_syscall_err(ret)) {
+        qemu_log(TARGET_ABI_FMT_ld, ret);
+        qemu_log(" (");
+        print_itimerval(arg1, 1);
+        qemu_log(")");
+    }
+
+    qemu_log("\n");
+}
+#endif
+
+
+#ifdef TARGET_NR_getitimer
+static void
+print_syscall_ret_setitimer(void *cpu_env, const struct syscallname *name,
+                            abi_long ret, abi_long arg0, abi_long arg1,
+                            abi_long arg2, abi_long arg3, abi_long arg4,
+                            abi_long arg5)
+{
+    if (!print_syscall_err(ret)) {
+        qemu_log(TARGET_ABI_FMT_ld, ret);
+        qemu_log(" (old_value = ");
+        print_itimerval(arg2, 1);
+        qemu_log(")");
+    }
+
+    qemu_log("\n");
+}
+#endif
+
 #if defined(TARGET_NR_listxattr) || defined(TARGET_NR_llistxattr) \
  || defined(TARGGET_NR_flistxattr)
 static void
@@ -1217,6 +1231,43 @@ UNUSED static struct flags mlockall_flags[] = {
     FLAG_END,
 };
 
+/* IDs of the various system clocks */
+#define TARGET_CLOCK_REALTIME              0
+#define TARGET_CLOCK_MONOTONIC             1
+#define TARGET_CLOCK_PROCESS_CPUTIME_ID    2
+#define TARGET_CLOCK_THREAD_CPUTIME_ID     3
+#define TARGET_CLOCK_MONOTONIC_RAW         4
+#define TARGET_CLOCK_REALTIME_COARSE       5
+#define TARGET_CLOCK_MONOTONIC_COARSE      6
+#define TARGET_CLOCK_BOOTTIME              7
+#define TARGET_CLOCK_REALTIME_ALARM        8
+#define TARGET_CLOCK_BOOTTIME_ALARM        9
+#define TARGET_CLOCK_SGI_CYCLE             10
+#define TARGET_CLOCK_TAI                   11
+
+UNUSED static struct enums clockids[] = {
+    ENUM_TARGET(CLOCK_REALTIME),
+    ENUM_TARGET(CLOCK_MONOTONIC),
+    ENUM_TARGET(CLOCK_PROCESS_CPUTIME_ID),
+    ENUM_TARGET(CLOCK_THREAD_CPUTIME_ID),
+    ENUM_TARGET(CLOCK_MONOTONIC_RAW),
+    ENUM_TARGET(CLOCK_REALTIME_COARSE),
+    ENUM_TARGET(CLOCK_MONOTONIC_COARSE),
+    ENUM_TARGET(CLOCK_BOOTTIME),
+    ENUM_TARGET(CLOCK_REALTIME_ALARM),
+    ENUM_TARGET(CLOCK_BOOTTIME_ALARM),
+    ENUM_TARGET(CLOCK_SGI_CYCLE),
+    ENUM_TARGET(CLOCK_TAI),
+    ENUM_END,
+};
+
+UNUSED static struct enums itimer_types[] = {
+    ENUM_GENERIC(ITIMER_REAL),
+    ENUM_GENERIC(ITIMER_VIRTUAL),
+    ENUM_GENERIC(ITIMER_PROF),
+    ENUM_END,
+};
+
 /*
  * print_xxx utility functions.  These are used to print syscall
  * parameters in certain format.  All of these have parameter
@@ -1435,13 +1486,34 @@ print_timeval(abi_ulong tv_addr, int last)
             print_pointer(tv_addr, last);
             return;
         }
-        qemu_log("{" TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "}%s",
-            tswapal(tv->tv_sec), tswapal(tv->tv_usec), get_comma(last));
+        qemu_log("{tv_sec = " TARGET_ABI_FMT_ld
+                 ",tv_usec = " TARGET_ABI_FMT_ld "}%s",
+                 tswapal(tv->tv_sec), tswapal(tv->tv_usec), get_comma(last));
         unlock_user(tv, tv_addr, 0);
     } else
         qemu_log("NULL%s", get_comma(last));
 }
 
+static void
+print_timespec(abi_ulong ts_addr, int last)
+{
+    if (ts_addr) {
+        struct target_timespec *ts;
+
+        ts = lock_user(VERIFY_READ, ts_addr, sizeof(*ts), 1);
+        if (!ts) {
+            print_pointer(ts_addr, last);
+            return;
+        }
+        qemu_log("{tv_sec = " TARGET_ABI_FMT_ld
+                 ",tv_nsec = " TARGET_ABI_FMT_ld "}%s",
+                 tswapal(ts->tv_sec), tswapal(ts->tv_nsec), get_comma(last));
+        unlock_user(ts, ts_addr, 0);
+    } else {
+        qemu_log("NULL%s", get_comma(last));
+    }
+}
+
 static void
 print_timezone(abi_ulong tz_addr, int last)
 {
@@ -1461,6 +1533,20 @@ print_timezone(abi_ulong tz_addr, int last)
     }
 }
 
+static void
+print_itimerval(abi_ulong it_addr, int last)
+{
+    if (it_addr) {
+        qemu_log("{it_interval=");
+        print_timeval(it_addr, 0);
+        qemu_log("it_value=");
+        print_timeval(it_addr + sizeof(struct target_timeval), 1);
+        qemu_log("}%s", get_comma(last));
+    } else {
+        qemu_log("NULL%s", get_comma(last));
+    }
+}
+
 #undef UNUSED
 
 #ifdef TARGET_NR_accept
@@ -1573,7 +1659,7 @@ print_clock_adjtime(void *cpu_env, const struct syscallname *name,
                     abi_long arg3, abi_long arg4, abi_long arg5)
 {
     print_syscall_prologue(name);
-    print_clockid(arg0, 0);
+    print_enums(clockids, arg0, 0);
     print_pointer(arg1, 1);
     print_syscall_epilogue(name);
 }
@@ -1903,6 +1989,19 @@ print_futimesat(void *cpu_env, const struct syscallname *name,
 }
 #endif
 
+#ifdef TARGET_NR_gettimeofday
+static void
+print_gettimeofday(void *cpu_env, const struct syscallname *name,
+                   abi_long arg0, abi_long arg1, abi_long arg2,
+                   abi_long arg3, abi_long arg4, abi_long arg5)
+{
+    print_syscall_prologue(name);
+    print_pointer(arg0, 0);
+    print_pointer(arg1, 1);
+    print_syscall_epilogue(name);
+}
+#endif
+
 #ifdef TARGET_NR_settimeofday
 static void
 print_settimeofday(void *cpu_env, const struct syscallname *name,
@@ -1916,6 +2015,60 @@ print_settimeofday(void *cpu_env, const struct syscallname *name,
 }
 #endif
 
+#if defined(TARGET_NR_clock_gettime) || defined(TARGET_NR_clock_getres)
+static void
+print_clock_gettime(void *cpu_env, const struct syscallname *name,
+                    abi_long arg0, abi_long arg1, abi_long arg2,
+                    abi_long arg3, abi_long arg4, abi_long arg5)
+{
+    print_syscall_prologue(name);
+    print_enums(clockids, arg0, 0);
+    print_pointer(arg1, 1);
+    print_syscall_epilogue(name);
+}
+#define print_clock_getres     print_clock_gettime
+#endif
+
+#ifdef TARGET_NR_clock_settime
+static void
+print_clock_settime(void *cpu_env, const struct syscallname *name,
+                    abi_long arg0, abi_long arg1, abi_long arg2,
+                    abi_long arg3, abi_long arg4, abi_long arg5)
+{
+    print_syscall_prologue(name);
+    print_enums(clockids, arg0, 0);
+    print_timespec(arg1, 1);
+    print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_getitimer
+static void
+print_getitimer(void *cpu_env, const struct syscallname *name,
+                abi_long arg0, abi_long arg1, abi_long arg2,
+                abi_long arg3, abi_long arg4, abi_long arg5)
+{
+    print_syscall_prologue(name);
+    print_enums(itimer_types, arg0, 0);
+    print_pointer(arg1, 1);
+    print_syscall_epilogue(name);
+}
+#endif
+
+#ifdef TARGET_NR_setitimer
+static void
+print_setitimer(void *cpu_env, const struct syscallname *name,
+                abi_long arg0, abi_long arg1, abi_long arg2,
+                abi_long arg3, abi_long arg4, abi_long arg5)
+{
+    print_syscall_prologue(name);
+    print_enums(itimer_types, arg0, 0);
+    print_itimerval(arg1, 0);
+    print_pointer(arg2, 1);
+    print_syscall_epilogue(name);
+}
+#endif
+
 #ifdef TARGET_NR_link
 static void
 print_link(void *cpu_env, const struct syscallname *name,
diff --git a/linux-user/strace.list b/linux-user/strace.list
index d0ea7f3464..084048ab96 100644
--- a/linux-user/strace.list
+++ b/linux-user/strace.list
@@ -83,16 +83,18 @@
 { TARGET_NR_clock_adjtime, "clock_adjtime" , NULL, print_clock_adjtime, NULL },
 #endif
 #ifdef TARGET_NR_clock_getres
-{ TARGET_NR_clock_getres, "clock_getres" , NULL, NULL, NULL },
+{ TARGET_NR_clock_getres, "clock_getres" , NULL, print_clock_getres,
+                          print_syscall_ret_clock_getres },
 #endif
 #ifdef TARGET_NR_clock_gettime
-{ TARGET_NR_clock_gettime, "clock_gettime" , NULL, NULL, NULL },
+{ TARGET_NR_clock_gettime, "clock_gettime" , NULL, print_clock_gettime,
+                           print_syscall_ret_clock_gettime },
 #endif
 #ifdef TARGET_NR_clock_nanosleep
 { TARGET_NR_clock_nanosleep, "clock_nanosleep" , NULL, NULL, NULL },
 #endif
 #ifdef TARGET_NR_clock_settime
-{ TARGET_NR_clock_settime, "clock_settime" , NULL, NULL, NULL },
+{ TARGET_NR_clock_settime, "clock_settime" , NULL, print_clock_settime, NULL },
 #endif
 #ifdef TARGET_NR_clone
 { TARGET_NR_clone, "clone" , NULL, print_clone, NULL },
@@ -315,7 +317,8 @@
 { TARGET_NR_gethostname, "gethostname" , NULL, NULL, NULL },
 #endif
 #ifdef TARGET_NR_getitimer
-{ TARGET_NR_getitimer, "getitimer" , NULL, NULL, NULL },
+{ TARGET_NR_getitimer, "getitimer" , NULL, print_getitimer,
+                       print_syscall_ret_getitimer },
 #endif
 #ifdef TARGET_NR_get_kernel_syms
 { TARGET_NR_get_kernel_syms, "get_kernel_syms" , NULL, NULL, NULL },
@@ -388,7 +391,8 @@
 { TARGET_NR_gettid, "gettid" , "%s()", NULL, NULL },
 #endif
 #ifdef TARGET_NR_gettimeofday
-{ TARGET_NR_gettimeofday, "gettimeofday" , NULL, NULL, NULL },
+{ TARGET_NR_gettimeofday, "gettimeofday" , NULL, print_gettimeofday,
+                          print_syscall_ret_gettimeofday },
 #endif
 #ifdef TARGET_NR_getuid
 { TARGET_NR_getuid, "getuid" , "%s()", NULL, NULL },
@@ -1291,7 +1295,8 @@
 { TARGET_NR_sethostname, "sethostname" , NULL, NULL, NULL },
 #endif
 #ifdef TARGET_NR_setitimer
-{ TARGET_NR_setitimer, "setitimer" , NULL, NULL, NULL },
+{ TARGET_NR_setitimer, "setitimer" , NULL, print_setitimer,
+                       print_syscall_ret_setitimer },
 #endif
 #ifdef TARGET_NR_set_mempolicy
 { TARGET_NR_set_mempolicy, "set_mempolicy" , NULL, NULL, NULL },
