Commit nios2 port to master.

1 files changed, 36 insertions, 0 deletions

diff --git a/sysdeps/unix/sysv/linux/nios2/syscall.S b/sysdeps/unix/sysv/linux/nios2/syscall.S
new file mode 100644
index 0000000000..718db61f03
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/syscall.S
@@ -0,0 +1,36 @@
+/* syscall - indirect system call.
+   Copyright (C) 2005-2015 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sysdep.h>
+
+/* We don't need a special syscall to implement syscall().  It won't work
+   reliably with 64-bit arguments (but that is true on many modern platforms).
+*/
+
+ENTRY (syscall)
+	mov	r2, r4
+	mov	r4, r5
+	mov	r5, r6
+	mov	r6, r7
+	ldw	r7, 0(sp)
+	ldw	r8, 4(sp)
+	ldw	r9, 8(sp)
+	trap
+	bne	r7, zero, SYSCALL_ERROR_LABEL
+        ret
+PSEUDO_END (syscall)