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/* SPDX-License-Identifier: BSD-2-Clause */
/*
* Copyright (c) 2015-2016, Linaro Limited
*/
#include <asm.S>
/* uint32_t atomic_inc32(uint32_t *v); */
FUNC atomic_inc32 , :
ldaxr w1, [x0]
add w1, w1, #1
stxr w2, w1, [x0]
cmp w2, #0
bne atomic_inc32
mov w0, w1
ret
END_FUNC atomic_inc32
/* uint32_t atomic_dec32(uint32_t *v); */
FUNC atomic_dec32 , :
ldaxr w1, [x0]
sub w1, w1, #1
stxr w2, w1, [x0]
cmp w2, #0
bne atomic_dec32
mov w0, w1
ret
END_FUNC atomic_dec32
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