diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/nios2/syscall.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/nios2/syscall.S | 36 |
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) |