1 files changed, 98 insertions, 0 deletions
diff --git a/newlib/libc/sys/linux/sigset.c b/newlib/libc/sys/linux/sigset.c
new file mode 100644
index 000000000..b6f2d79e5
--- /dev/null
+++ b/newlib/libc/sys/linux/sigset.c
@@ -0,0 +1,98 @@
+/* sigset.c - signal set manipulation functions */
+
+/* Copyright 2002, Red Hat Inc. */
+
+/* Note: these are currently grouped together in one file so that
+         it will override the default version in the libc/unix 
+         directory which has grouped all functions in one file. */
+
+/* sigaddset function */
+
+#include <signal.h>
+#include <bits/sigset.h>
+#include <errno.h>
+#include <string.h>
+#include <machine/weakalias.h>
+
+int
+sigaddset (sigset_t *set, const int signo)
+{
+  int index, mask;
+  __sigset_t *st = (__sigset_t *)set;
+
+  if (signo > NSIG)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+
+  index = (signo - 1) / (8 * sizeof(long));
+  mask = 1 << ((signo - 1) % (8 * sizeof(long)));
+
+  st->__val[index] |= mask;
+  return 0;
+}
+
+/* sigdelset function */
+
+int
+sigdelset (sigset_t *set, const int signo)
+{
+  int index, mask;
+  __sigset_t *st = (__sigset_t *)set;
+
+  if (signo > NSIG)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+
+  index = (signo - 1) / (8 * sizeof(long));
+  mask = 1 << ((signo - 1) % (8 * sizeof(long)));
+
+  st->__val[index] &= ~mask;
+  return 0;
+}
+
+/* sigemptyset function */
+
+int
+sigemptyset (sigset_t *set)
+{
+  int size = NSIG / 8;
+  __sigset_t *st = (__sigset_t *)set;
+  memset (st->__val, 0, size);
+  return 0;
+}
+
+/* sigfillset function */
+
+int
+sigfillset (sigset_t *set)
+{
+  int size = NSIG / 8;
+  __sigset_t *st = (__sigset_t *)set;
+  memset (st->__val, 0xff, size);
+  return 0;
+}
+
+/* sigismember function */
+
+int
+sigismember (const sigset_t *set, int signo)
+{
+  int index, mask;
+  __sigset_t *st = (__sigset_t *)set;
+
+  if (signo > NSIG)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+
+  index = (signo - 1) / (8 * sizeof(long));
+  mask = 1 << ((signo - 1) % (8 * sizeof(long)));
+
+  return (st->__val[index] & mask) != 0;
+}
+