1/* SPDX-License-Identifier: BSD-2-Clause */ 2/* 3 * Copyright (c) 2015-2016, Linaro Limited 4 */ 5 6#include <asm.S> 7 8/* uint32_t atomic_inc32(uint32_t *v); */ 9FUNC atomic_inc32 , : 10 ldrex r1, [r0] 11 add r1, r1, #1 12 strex r2, r1, [r0] 13 cmp r2, #0 14 bne atomic_inc32 15 mov r0, r1 16 bx lr 17END_FUNC atomic_inc32 18 19/* uint32_t atomic_dec32(uint32_t *v); */ 20FUNC atomic_dec32 , : 21 ldrex r1, [r0] 22 sub r1, r1, #1 23 strex r2, r1, [r0] 24 cmp r2, #0 25 bne atomic_dec32 26 mov r0, r1 27 bx lr 28END_FUNC atomic_dec32 29