linux-user/syscall.c

@@ -259,9 +259,15 @@ static inline type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5,
 #define TARGET_NR__llseek TARGET_NR_llseek
 #endif
 
-#define __NR_sys_gettid __NR_gettid
-_syscall0(int, sys_gettid)
-
+#ifdef __NR_gettid
+_syscall0(int, gettid)
+#else
+/* This is a replacement for the host gettid() and must return a host
+   errno. */
+static int gettid(void) {
+    return -ENOSYS;
+}
+#endif
 #if defined(TARGET_NR_getdents) && defined(__NR_getdents)
 _syscall3(int, sys_getdents, uint, fd, struct linux_dirent *, dirp, uint, count);
 #endif
@@ -6442,7 +6448,7 @@ static void *clone_func(void *arg)
     cpu = ENV_GET_CPU(env);
     thread_cpu = cpu;
     ts = (TaskState *)cpu->opaque;
-    info->tid = sys_gettid();
+    info->tid = gettid();
     task_settid(ts);
 #ifdef TARGET_ABI_IRIX
     /* TODO: which fields in the PRDA are filled in by the IRIX kernel? */
@@ -6604,9 +6610,9 @@ static int do_fork(CPUArchState *env, unsigned int flags, abi_ulong newsp,
                mapping.  We can't repeat the spinlock hack used above because
                the child process gets its own copy of the lock.  */
             if (flags & CLONE_CHILD_SETTID)
-                put_user_u32(sys_gettid(), child_tidptr);
+                put_user_u32(gettid(), child_tidptr);
             if (flags & CLONE_PARENT_SETTID)
-                put_user_u32(sys_gettid(), parent_tidptr);
+                put_user_u32(gettid(), parent_tidptr);
             if (flags & CLONE_SETTLS)
                 cpu_set_tls (env, newtls);
             if (flags & CLONE_CHILD_CLEARTID)
@@ -8861,11 +8867,10 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
 #ifdef TARGET_NR_stime /* not on alpha */
     case TARGET_NR_stime:
         {
-            struct timespec ts;
-            ts.tv_nsec = 0;
-            if (get_user_sal(ts.tv_sec, arg1))
+            time_t host_time;
+            if (get_user_sal(host_time, arg1))
                 goto efault;
-            ret = get_errno(clock_settime(CLOCK_REALTIME, &ts));
+            ret = get_errno(stime(&host_time));
         }
         break;
 #endif
@@ -12584,7 +12589,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
 #endif
 #ifdef TARGET_NR_gettid
     case TARGET_NR_gettid:
-        ret = get_errno(sys_gettid());
+        ret = get_errno(gettid());
         break;
 #endif
 #ifdef TARGET_NR_readahead