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/* SPDX-License-Identifier: BSD-2-Clause */
/*
* Copyright (c) 2015-2016, Linaro Limited
* All rights reserved.
*/
#include <asm.S>
/* uint32_t atomic_inc32(uint32_t *v); */
FUNC atomic_inc32 , :
ldrex r1, [r0]
add r1, r1, #1
strex r2, r1, [r0]
cmp r2, #0
bne atomic_inc32
mov r0, r1
bx lr
END_FUNC atomic_inc32
/* uint32_t atomic_dec32(uint32_t *v); */
FUNC atomic_dec32 , :
ldrex r1, [r0]
sub r1, r1, #1
strex r2, r1, [r0]
cmp r2, #0
bne atomic_dec32
mov r0, r1
bx lr
END_FUNC atomic_dec32
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