49 lines
1.3 KiB
ArmAsm
49 lines
1.3 KiB
ArmAsm
/*
|
|
* $QNXLicenseC:
|
|
* Copyright 2007, QNX Software Systems. All Rights Reserved.
|
|
*
|
|
* You must obtain a written license from and pay applicable license fees to QNX
|
|
* Software Systems before you may reproduce, modify or distribute this software,
|
|
* or any work that includes all or part of this software. Free development
|
|
* licenses are available for evaluation and non-commercial purposes. For more
|
|
* information visit http://licensing.qnx.com or email licensing@qnx.com.
|
|
*
|
|
* This file may contain contributions from others. Please review this entire
|
|
* file for other proprietary rights or license notices, as well as the QNX
|
|
* Development Suite License Guide at http://licensing.qnx.com/license-guide/
|
|
* for other information.
|
|
* $
|
|
*/
|
|
|
|
|
|
|
|
|
|
/*
|
|
* atomic_set.S
|
|
* atomicly set bit(s) in a memory location
|
|
*/
|
|
#include <mips/asm.h>
|
|
|
|
#
|
|
# void atomic_set( volatile unsigned *loc, unsigned bits )
|
|
# unsigned atomic_set_value( volatile unsigned *loc, unsigned bits )
|
|
#
|
|
FRAME(atomic_set,sp,0,ra)
|
|
atomic_set_value:
|
|
.set noreorder
|
|
.set mips3
|
|
|
|
1: ll v0,0(a0)
|
|
nop
|
|
or t0,v0,a1
|
|
sc t0,0(a0)
|
|
beq t0,zero,1b
|
|
nop
|
|
j ra
|
|
sync
|
|
ENDFRAME(atomic_set)
|
|
|
|
.globl atomic_set_value
|
|
.type atomic_set_value,@function
|
|
.size atomic_set_value,.-atomic_set_value
|