v2.0.0
stdatomic.h
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1/*
2 * Copyright (c) 2024 Raspberry Pi (Trading) Ltd.
3 * Copyright (c) 2024 Stephen Street (stephen@redrocketcomputing.com).
4 *
5 * SPDX-License-Identifier: BSD-3-Clause
6 */
7
8#ifndef __STDATOMIC_H
9#define __STDATOMIC_H
10
11#ifdef __cplusplus
12extern "C" {
13#endif
14
29#include <stdint.h>
30#include_next <stdatomic.h>
31
32// needed for PICO_C_COMPILER_IS_GNU
33#include "pico.h"
34
35#if PICO_RP2040 && PICO_C_COMPILER_IS_GNU
36// on GNU without exclusive instructions these don't get routed thru _1 functions for some reason
37#undef atomic_flag_test_and_set
38#undef atomic_flag_test_and_set_explicit
39
40extern _Bool __atomic_test_and_set_c(volatile void *mem, int model);
41
42#define atomic_flag_test_and_set(PTR) __atomic_test_and_set_c((PTR), __ATOMIC_SEQ_CST)
43#define atomic_flag_test_and_set_explicit(PTR, MO) __atomic_test_and_set_c((PTR), (MO))
44#endif
45
46#ifdef __cplusplus
47}
48#endif
49#endif
pico.h