1 files changed, 40 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/nds32/sigaction.c b/libc/sysdeps/linux/nds32/sigaction.c
new file mode 100644
index 000000000..1a24c49b4
--- /dev/null
+++ b/libc/sysdeps/linux/nds32/sigaction.c
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2016 Andes Technology, Inc.
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include <errno.h>
+#include <signal.h>
+#include <sys/syscall.h>
+#include <string.h>
+#include <bits/kernel_sigaction.h>
+
+#define SA_RESTORER	0x04000000
+
+extern void __default_sa_restorer(void);
+
+int __libc_sigaction(int sig, const struct sigaction *act,
+					  struct sigaction *oact)
+{
+	struct sigaction kact;
+
+	if (act && !(act->sa_flags & SA_RESTORER)) {
+		memcpy(&kact, act, sizeof(kact));
+		kact.sa_restorer = __default_sa_restorer;
+		kact.sa_flags |= SA_RESTORER;
+		act = &kact;
+	}
+	/* NB: kernel (as of 2.6.25) will return EINVAL
+	 * if sizeof(act->sa_mask) does not match kernel's sizeof(sigset_t) */
+	return __syscall_rt_sigaction(sig, act, oact, sizeof(act->sa_mask));
+}
+
+#ifndef LIBC_SIGACTION
+# ifndef __UCLIBC_HAS_THREADS__
+strong_alias(__libc_sigaction,sigaction)
+libc_hidden_def(sigaction)
+# else
+weak_alias(__libc_sigaction,sigaction)
+libc_hidden_weak(sigaction)
+# endif
+#endif