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Diffstat (limited to 'sysdeps/unix/sysv/linux/nios2/syscall.S')
-rw-r--r--sysdeps/unix/sysv/linux/nios2/syscall.S36
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)