From: Aleksandar Rikalo <arik...@wavecomp.com>
Add support for semtimedop() emulation. It is based on invocation
of safe_semtimedop().
Conversion is left out of safe_semtimedop(), since other safe_xxx()
usually don't contain similar conversions.
Signed-off-by: Aleksandar Rikalo <arik...@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarko...@wavecomp.com>
---
linux-user/syscall.c | 40 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 40 insertions(+)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index ee80175..6825458 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -6650,7 +6650,43 @@ static inline abi_long host_to_target_statx(struct
target_statx *host_stx,
return 0;
}
#endif
+#ifdef TARGET_NR_semtimedop
+static inline abi_long do_semtimedop(int semid, abi_long ptr, unsigned nsops,
+ abi_long timeout)
+{
+ struct sembuf *sops;
+ struct timespec ts, *pts;
+ abi_long ret;
+
+ if (timeout) {
+ pts = &ts;
+ if (target_to_host_timespec(pts, timeout)) {
+ return -TARGET_EFAULT;
+ }
+ } else {
+ pts = NULL;
+ }
+ sops = g_malloc(sizeof(struct sembuf) * nsops);
+ if (sops == NULL) {
+ return -TARGET_EFAULT;
+ }
+
+ if (target_to_host_sembuf(sops, ptr, nsops)) {
+ g_free(sops);
+ return -TARGET_EFAULT;
+ }
+
+#ifdef __NR_semtimedop
+ ret = get_errno(safe_semtimedop(semid, sops, nsops, pts));
+#else
+ ret = -TARGET_ENOSYS;
+#endif
+ g_free(sops);
+
+ return ret;
+}
+#endif
/* ??? Using host futex calls even when target atomic operations
are not really atomic probably breaks things. However implementing
@@ -9194,6 +9230,10 @@ static abi_long do_syscall1(void *cpu_env, int num,
abi_long arg1,
case TARGET_NR_semop:
return do_semop(arg1, arg2, arg3);
#endif
+#ifdef TARGET_NR_semtimedop
+ case TARGET_NR_semtimedop:
+ return do_semtimedop(arg1, arg2, arg3, arg4);
+#endif
#ifdef TARGET_NR_semctl
case TARGET_NR_semctl:
return do_semctl(arg1, arg2, arg3, arg4);
--
2.7.4
