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RIOT/cpu/arm_common/atomic.s
2014-05-27 11:54:55 +02:00

26 lines
474 B
ArmAsm

/*
* Copyright (C) 2014 Freie Universität Berlin
*
* This file is subject to the terms and conditions of the GNU Lesser General
* Public License. See the file LICENSE in the top level directory for more
* details.
*/
/* GCC ARM assembler */
.text
.code 32
.align 4 /* 0 */
/* .extern sched_run*/
/* Public functions declared in this file */
.global atomic_set_return
.func
atomic_set_return:
SWP r2,r1,[r0]
MOV r0, r2
mov pc, lr
.endfunc