mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-11 13:50:06 +00:00
48 lines
1.5 KiB
ArmAsm
48 lines
1.5 KiB
ArmAsm
/* Copyright (C) 1995, 1996, 1997 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 Library General Public License as
|
|
published by the Free Software Foundation; either version 2 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include <sysdep.h>
|
|
|
|
/* Please consult the file sysdeps/unix/sysv/linux/arm/sysdep.h for
|
|
more information about the value -4095 used below.*/
|
|
|
|
.text
|
|
ENTRY (syscall)
|
|
|
|
/* Normally encoding the system call number in the instruction is
|
|
good. But we pay the price here. */
|
|
|
|
sub sp, sp, $0xc @ get 3 words on the stack
|
|
orr r0, r0, $0xef000000 @ make up a SWI instruction
|
|
orr r0, r0, $SWI_BASE
|
|
str r0, [sp]
|
|
ldr r0, _reti
|
|
str r0, [sp, $4]
|
|
adr r0, _ret
|
|
str r0, [sp, $8]
|
|
mov r0, r1
|
|
mov r1, r2
|
|
mov r2, r3
|
|
mov pc, sp
|
|
_ret: add sp, sp, $0xc
|
|
RETINSTR(mov, pc, r14)
|
|
|
|
_reti: .word 0xe51ff004 @ ldr pc, [pc, $4]
|
|
|
|
PSEUDO_END (syscall)
|