1 files changed, 61 insertions, 0 deletions
diff --git a/newlib/libc/unix/sigset.c b/newlib/libc/unix/sigset.c
new file mode 100644
index 00000000000..ecb3d08001f
--- /dev/null
+++ b/newlib/libc/unix/sigset.c
@@ -0,0 +1,61 @@
+#include <signal.h>
+#include <errno.h>
+
+#ifdef SIG_SETMASK	/* easier than trying to remove from Makefile */
+
+#undef sigemptyset
+int
+sigemptyset (sigset_t * set)
+{
+  *set = (sigset_t) 0;
+  return 0;
+}
+
+int
+sigfillset (sigset_t * set)
+{
+  *set = ~((sigset_t) 0);
+  return 0;
+}
+
+#undef sigaddset
+int
+sigaddset (sigset_t * set, int signo)
+{
+  if (signo >= NSIG || signo <= 0)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+  *set |= 1 << (signo - 1);
+  return 0;
+}
+
+int
+sigdelset (sigset_t * set, int signo)
+{
+  if (signo >= NSIG || signo <= 0)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+  *set &= ~(1 << (signo - 1));
+  return 0;
+}
+
+int
+sigismember (const sigset_t * set, int signo)
+{
+  if (signo >= NSIG || signo <= 0)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+
+  if (*set & (1 << (signo - 1)))
+    return 1;
+  else
+    return 0;
+}
+
+#endif /* SIG_SETMASK */