1/* SPDX-License-Identifier: BSD-2-Clause */ 2/* 3 * Copyright (c) 2015-2016, Linaro Limited 4 */ 5 6#include <asm.S> 7 8 .section .note.GNU-stack,"",%progbits 9 10/* uint32_t atomic_inc32(uint32_t *v); */ 11FUNC atomic_inc32 , : 12 ldrex r1, [r0] 13 add r1, r1, #1 14 strex r2, r1, [r0] 15 cmp r2, #0 16 bne atomic_inc32 17 mov r0, r1 18 bx lr 19END_FUNC atomic_inc32 20 21/* uint32_t atomic_dec32(uint32_t *v); */ 22FUNC atomic_dec32 , : 23 ldrex r1, [r0] 24 sub r1, r1, #1 25 strex r2, r1, [r0] 26 cmp r2, #0 27 bne atomic_dec32 28 mov r0, r1 29 bx lr 30END_FUNC atomic_dec32 31