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/**
* @file
*
* @brief Atomic Operations CPU API
*/
/*
* COPYRIGHT (c) 2013 Deng Hengyi.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifndef _RTEMS_SCORE_CPUSTDATOMIC_H
#define _RTEMS_SCORE_CPUSTDATOMIC_H
#include <stdint.h>
#if defined(__cplusplus) && __GNUC__ >= 4 && __GNUC_MINOR__ >= 9
/*
* The GCC 4.9 ships its own <stdatomic.h> which is not C++ compatible. The
* suggested solution was to include <atomic> in case C++ is used. This works
* at least with GCC 4.9. See also:
*
* http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60932
* http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60940
*/
#include <atomic>
typedef std::atomic_uint CPU_atomic_Uint;
typedef std::atomic_ulong CPU_atomic_Ulong;
typedef std::atomic_uintptr_t CPU_atomic_Pointer;
typedef std::atomic_flag CPU_atomic_Flag;
#define CPU_ATOMIC_ORDER_RELAXED std::memory_order_relaxed
#define CPU_ATOMIC_ORDER_ACQUIRE std::memory_order_acquire
#define CPU_ATOMIC_ORDER_RELEASE std::memory_order_release
#define CPU_ATOMIC_ORDER_SEQ_CST std::memory_order_seq_cst
#define CPU_ATOMIC_INITIALIZER_UINT( value ) ATOMIC_VAR_INIT( value )
#define CPU_ATOMIC_INITIALIZER_ULONG( value ) ATOMIC_VAR_INIT( value )
#define CPU_ATOMIC_INITIALIZER_PTR( value ) \
ATOMIC_VAR_INIT( (uintptr_t) (value) )
#define CPU_ATOMIC_INITIALIZER_FLAG ATOMIC_FLAG_INIT
#define _CPU_atomic_Fence( order ) atomic_thread_fence( order )
#define _CPU_atomic_Init_uint( obj, desired ) \
(obj)->store( desired )
#define _CPU_atomic_Init_ulong( obj, desired ) \
(obj)->store( desired )
#define _CPU_atomic_Init_ptr( obj, desired ) \
(obj)->store( desired )
#define _CPU_atomic_Load_uint( obj, order ) \
(obj)->load( order )
#define _CPU_atomic_Load_ulong( obj, order ) \
(obj)->load( order )
#define _CPU_atomic_Load_ptr( obj, order ) \
(void *) (obj)->load( order )
#define _CPU_atomic_Store_uint( obj, desr, order ) \
(obj)->store( desr, order )
#define _CPU_atomic_Store_ulong( obj, desr, order ) \
(obj)->store( desr, order )
#define _CPU_atomic_Store_ptr( obj, desr, order ) \
(obj)->store( (uintptr_t) desr, order )
#define _CPU_atomic_Fetch_add_uint( obj, arg, order ) \
(obj)->fetch_add( arg, order )
#define _CPU_atomic_Fetch_add_ulong( obj, arg, order ) \
(obj)->fetch_add( arg, order )
#define _CPU_atomic_Fetch_add_ptr( obj, arg, order ) \
(obj)->fetch_add( arg, (uintptr_t) order )
#define _CPU_atomic_Fetch_sub_uint( obj, arg, order ) \
(obj)->fetch_sub( arg, order )
#define _CPU_atomic_Fetch_sub_ulong( obj, arg, order ) \
(obj)->fetch_sub( arg, order )
#define _CPU_atomic_Fetch_sub_ptr( obj, arg, order ) \
(obj)->fetch_sub( arg, (uintptr_t) order )
#define _CPU_atomic_Fetch_or_uint( obj, arg, order ) \
(obj)->fetch_or( arg, order )
#define _CPU_atomic_Fetch_or_ulong( obj, arg, order ) \
(obj)->fetch_or( arg, order )
#define _CPU_atomic_Fetch_or_ptr( obj, arg, order ) \
(obj)->fetch_or( arg, (uintptr_t) order )
#define _CPU_atomic_Fetch_and_uint( obj, arg, order ) \
(obj)->fetch_and( arg, order )
#define _CPU_atomic_Fetch_and_ulong( obj, arg, order ) \
(obj)->fetch_and( arg, order )
#define _CPU_atomic_Fetch_and_ptr( obj, arg, order ) \
(obj)->fetch_and( arg, (uintptr_t) order )
#define _CPU_atomic_Exchange_uint( obj, desr, order ) \
(obj)->exchange( desr, order )
#define _CPU_atomic_Exchange_ulong( obj, desr, order ) \
(obj)->exchange( desr, order )
#define _CPU_atomic_Exchange_ptr( obj, desr, order ) \
(void *) (obj)->exchange( desr, (uintptr_t) order )
#define _CPU_atomic_Compare_exchange_uint( obj, expected, desired, succ, fail ) \
(obj)->compare_exchange_strong( expected, desired, succ, fail )
#define _CPU_atomic_Compare_exchange_ulong( obj, expected, desired, succ, fail ) \
(obj)->compare_exchange_strong( expected, desired, succ, fail )
#define _CPU_atomic_Compare_exchange_ptr( obj, expected, desired, succ, fail ) \
(obj)->compare_exchange_strong( (void **) expected, (uintptr_t) desired, succ, fail )
#define _CPU_atomic_Flag_clear( obj, order ) \
(obj)->clear( order )
#define _CPU_atomic_Flag_test_and_set( obj, order ) \
(obj)->test_and_set( order )
#else /* __cplusplus */
#include <stdatomic.h>
typedef atomic_uint CPU_atomic_Uint;
typedef atomic_ulong CPU_atomic_Ulong;
typedef atomic_uintptr_t CPU_atomic_Pointer;
typedef atomic_flag CPU_atomic_Flag;
#define CPU_ATOMIC_ORDER_RELAXED memory_order_relaxed
#define CPU_ATOMIC_ORDER_ACQUIRE memory_order_acquire
#define CPU_ATOMIC_ORDER_RELEASE memory_order_release
#define CPU_ATOMIC_ORDER_SEQ_CST memory_order_seq_cst
#define CPU_ATOMIC_INITIALIZER_UINT( value ) ATOMIC_VAR_INIT( value )
#define CPU_ATOMIC_INITIALIZER_ULONG( value ) ATOMIC_VAR_INIT( value )
#define CPU_ATOMIC_INITIALIZER_PTR( value ) \
ATOMIC_VAR_INIT( (uintptr_t) (value) )
#define CPU_ATOMIC_INITIALIZER_FLAG ATOMIC_FLAG_INIT
#define _CPU_atomic_Fence( order ) atomic_thread_fence( order )
#define _CPU_atomic_Init_uint( obj, desired ) \
atomic_init( obj, desired )
#define _CPU_atomic_Init_ulong( obj, desired ) \
atomic_init( obj, desired )
#define _CPU_atomic_Init_ptr( obj, desired ) \
atomic_init( obj, (uintptr_t) desired )
#define _CPU_atomic_Load_uint( obj, order ) \
atomic_load_explicit( obj, order )
#define _CPU_atomic_Load_ulong( obj, order ) \
atomic_load_explicit( obj, order )
#define _CPU_atomic_Load_ptr( obj, order ) \
(void *) atomic_load_explicit( obj, order )
#define _CPU_atomic_Store_uint( obj, desr, order ) \
atomic_store_explicit( obj, desr, order )
#define _CPU_atomic_Store_ulong( obj, desr, order ) \
atomic_store_explicit( obj, desr, order )
#define _CPU_atomic_Store_ptr( obj, desr, order ) \
atomic_store_explicit( obj, desr, order )
#define _CPU_atomic_Fetch_add_uint( obj, arg, order ) \
atomic_fetch_add_explicit( obj, arg, order )
#define _CPU_atomic_Fetch_add_ulong( obj, arg, order ) \
atomic_fetch_add_explicit( obj, arg, order )
#define _CPU_atomic_Fetch_add_ptr( obj, arg, order ) \
atomic_fetch_add_explicit( obj, arg, order )
#define _CPU_atomic_Fetch_sub_uint( obj, arg, order ) \
atomic_fetch_sub_explicit( obj, arg, order )
#define _CPU_atomic_Fetch_sub_ulong( obj, arg, order ) \
atomic_fetch_sub_explicit( obj, arg, order )
#define _CPU_atomic_Fetch_sub_ptr( obj, arg, order ) \
atomic_fetch_sub_explicit( obj, arg, order )
#define _CPU_atomic_Fetch_or_uint( obj, arg, order ) \
atomic_fetch_or_explicit( obj, arg, order )
#define _CPU_atomic_Fetch_or_ulong( obj, arg, order ) \
atomic_fetch_or_explicit( obj, arg, order )
#define _CPU_atomic_Fetch_or_ptr( obj, arg, order ) \
atomic_fetch_or_explicit( obj, arg, order )
#define _CPU_atomic_Fetch_and_uint( obj, arg, order ) \
atomic_fetch_and_explicit( obj, arg, order )
#define _CPU_atomic_Fetch_and_ulong( obj, arg, order ) \
atomic_fetch_and_explicit( obj, arg, order )
#define _CPU_atomic_Fetch_and_ptr( obj, arg, order ) \
atomic_fetch_and_explicit( obj, arg, order )
#define _CPU_atomic_Exchange_uint( obj, desr, order ) \
atomic_exchange_explicit( obj, desr, order )
#define _CPU_atomic_Exchange_ulong( obj, desr, order ) \
atomic_exchange_explicit( obj, desr, order )
#define _CPU_atomic_Exchange_ptr( obj, desr, order ) \
atomic_exchange_explicit( obj, desr, order )
#define _CPU_atomic_Compare_exchange_uint( obj, expected, desired, succ, fail ) \
atomic_compare_exchange_strong_explicit( obj, expected, desired, succ, fail )
#define _CPU_atomic_Compare_exchange_ulong( obj, expected, desired, succ, fail ) \
atomic_compare_exchange_strong_explicit( obj, expected, desired, succ, fail )
#define _CPU_atomic_Compare_exchange_ptr( obj, expected, desired, succ, fail ) \
atomic_compare_exchange_strong_explicit( obj, expected, desired, succ, fail )
#define _CPU_atomic_Flag_clear( obj, order ) \
atomic_flag_clear_explicit( obj, order )
#define _CPU_atomic_Flag_test_and_set( obj, order ) \
atomic_flag_test_and_set_explicit( obj, order )
#endif /* __cplusplus */
#endif /* _RTEMS_SCORE_CPUSTDATOMIC_H */
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