2 files changed, 62 insertions, 1 deletions
diff --git a/libc/sysdeps/linux/alpha/Makefile.arch b/libc/sysdeps/linux/alpha/Makefile.arch
index 2a66bc1a4..fddfc0052 100644
--- a/libc/sysdeps/linux/alpha/Makefile.arch
+++ b/libc/sysdeps/linux/alpha/Makefile.arch
@@ -5,7 +5,7 @@
 # Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
 #
 
-CSRC := __syscall_error.c
+CSRC := __syscall_error.c sigprocmask.c
 
 SSRC := \
 	__longjmp.S brk.S bsd-_setjmp.S bsd-setjmp.S clone.S \
diff --git a/libc/sysdeps/linux/alpha/sigprocmask.c b/libc/sysdeps/linux/alpha/sigprocmask.c
new file mode 100644
index 000000000..2ce49da48
--- /dev/null
+++ b/libc/sysdeps/linux/alpha/sigprocmask.c
@@ -0,0 +1,61 @@
+/* Copyright (C) 1993, 1995, 1997, 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by David Mosberger (davidm@azstarnet.com).
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <features.h>
+#include <errno.h>
+#include <sys/syscall.h>
+#include <signal.h>
+
+/* When there is kernel support for more than 64 signals, we'll have to
+   switch to a new system call convention here.  */
+
+static inline _syscall2(int, osf_sigprocmask, int, how, unsigned long int, setval);
+
+int
+__sigprocmask (int how, const sigset_t *set, sigset_t *oset)
+{
+  unsigned long int setval;
+  long result;
+
+  if (set)
+    setval = set->__val[0];
+  else
+    {
+      setval = 0;
+      how = SIG_BLOCK;	/* ensure blocked mask doesn't get changed */
+    }
+
+  result = osf_sigprocmask(how, setval);
+  if (result == -1)
+    /* If there are ever more than 63 signals, we need to recode this
+       in assembler since we wouldn't be able to distinguish a mask of
+       all 1s from -1, but for now, we're doing just fine... */
+    return result;
+
+  if (oset)
+    {
+      oset->__val[0] = result;
+      result = _SIGSET_NWORDS;
+      while (--result > 0)
+	oset->__val[result] = 0;
+    }
+  return 0;
+}
+
+weak_alias (__sigprocmask, sigprocmask);