| /* 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 , : | |
| 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 |