mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-11 13:50:06 +00:00
45 lines
1.3 KiB
ArmAsm
45 lines
1.3 KiB
ArmAsm
/* Copyright (C) 2005-2013 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>
|
|
|
|
/* syscall (int nr, ...)
|
|
|
|
AArch64 system calls take between 0 and 7 arguments. On entry here nr
|
|
is in w0 and any other system call arguments are in register x1..x7.
|
|
|
|
For kernel entry we need to move the system call nr to x8 then
|
|
load the remaining arguments to register. */
|
|
|
|
ENTRY (syscall)
|
|
uxtw x8, w0
|
|
mov x0, x1
|
|
mov x1, x2
|
|
mov x2, x3
|
|
mov x3, x4
|
|
mov x4, x5
|
|
mov x5, x6
|
|
mov x6, x7
|
|
svc 0x0
|
|
cmn x0, #4095
|
|
b.cs 1f
|
|
RET
|
|
1:
|
|
b SYSCALL_ERROR
|
|
PSEUDO_END (syscall)
|