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/***************************************************************************************************
Zyan Core Library (Zyan-C)
Original Author : Florian Bernd
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
***************************************************************************************************/
/**
* @file
* Cross compiler atomic intrinsics.
*/
#ifndef ZYCORE_ATOMIC_H
#define ZYCORE_ATOMIC_H
#ifdef __cplusplus
extern "C" {
#endif
#include "zydis/Zycore/Defines.h"
#include "zydis/Zycore/Types.h"
/* ============================================================================================== */
/* Enums and Types */
/* ============================================================================================== */
/*
* Wraps a 32-bit value to provide atomic access.
*/
typedef struct ZyanAtomic32_
{
ZyanU32 volatile value;
} ZyanAtomic32;
/*
* Wraps a 64-bit value to provide atomic access.
*/
typedef struct ZyanAtomic64_
{
ZyanU64 volatile value;
} ZyanAtomic64;
/*
* Wraps a pointer-sized value to provide atomic access.
*/
typedef struct ZyanAtomicPointer_
{
ZyanVoidPointer volatile value;
} ZyanAtomicPointer;
/* ============================================================================================== */
/* Macros */
/* ============================================================================================== */
/* ---------------------------------------------------------------------------------------------- */
/* Pointer sized */
/* ---------------------------------------------------------------------------------------------- */
/**
* @copydoc ZyanAtomicCompareExchange
*/
#define ZYAN_ATOMIC_COMPARE_EXCHANGE(destination, comparand, value) \
ZyanAtomicCompareExchange((ZyanAtomicPointer*)&(destination), (comparand), (value))
/**
* @copydoc ZyanAtomicIncrement
*/
#define ZYAN_ATOMIC_INCREMENT(destination) \
ZyanAtomicIncrement((ZyanAtomicPointer*)&(destination));
/**
* @copydoc ZyanAtomicDecrement
*/
#define ZYAN_ATOMIC_DECREMENT(destination) \
ZyanAtomicDecrement((ZyanAtomicPointer*)&(destination));
/* ---------------------------------------------------------------------------------------------- */
/* 32-bit */
/* ---------------------------------------------------------------------------------------------- */
/**
* @copydoc ZyanAtomicCompareExchange
*/
#define ZYAN_ATOMIC_COMPARE_EXCHANGE32(destination, comparand, value) \
ZyanAtomicCompareExchange32((ZyanAtomic32*)&(destination), (comparand), (value))
/**
* @copydoc ZyanAtomicIncrement
*/
#define ZYAN_ATOMIC_INCREMENT32(destination) \
ZyanAtomicIncrement32((ZyanAtomic32*)&(destination));
/**
* @copydoc ZyanAtomicDecrement
*/
#define ZYAN_ATOMIC_DECREMENT32(destination) \
ZyanAtomicDecrement32((ZyanAtomic32*)&(destination));
/* ---------------------------------------------------------------------------------------------- */
/* 64-bit */
/* ---------------------------------------------------------------------------------------------- */
/**
* @copydoc ZyanAtomicCompareExchange
*/
#define ZYAN_ATOMIC_COMPARE_EXCHANGE64(destination, comparand, value) \
ZyanAtomicCompareExchange64((ZyanAtomic64*)&(destination), (comparand), (value))
/**
* @copydoc ZyanAtomicIncrement
*/
#define ZYAN_ATOMIC_INCREMENT64(destination) \
ZyanAtomicIncrement64((ZyanAtomic64*)&(destination));
/**
* @copydoc ZyanAtomicDecrement
*/
#define ZYAN_ATOMIC_DECREMENT64(destination) \
ZyanAtomicDecrement64((ZyanAtomic64*)&(destination));
/* ---------------------------------------------------------------------------------------------- */
/* ============================================================================================== */
/* Functions */
/* ============================================================================================== */
/* ---------------------------------------------------------------------------------------------- */
/* Pointer sized */
/* ---------------------------------------------------------------------------------------------- */
/**
* Compares two values for equality and, if they are equal, replaces the first value.
*
* @param destination A pointer to the destination value.
* @param comparand The value to compare with.
* @param value The replacement value.
*
* @return The original value.
*/
static ZyanUPointer ZyanAtomicCompareExchange(ZyanAtomicPointer* destination,
ZyanUPointer comparand, ZyanUPointer value);
/**
* Increments the given value and stores the result, as an atomic operation.
*
* @param destination A pointer to the destination value.
*
* @return The incremented value.
*/
static ZyanUPointer ZyanAtomicIncrement(ZyanAtomicPointer* destination);
/**
* Decrements the given value and stores the result, as an atomic operation.
*
* @param destination A pointer to the destination value.
*
* @return The decremented value.
*/
static ZyanUPointer ZyanAtomicDecrement(ZyanAtomicPointer* destination);
/* ---------------------------------------------------------------------------------------------- */
/* 32-bit */
/* ---------------------------------------------------------------------------------------------- */
/**
* @copydoc ZyanAtomicCompareExchange
*/
static ZyanU32 ZyanAtomicCompareExchange32(ZyanAtomic32* destination,
ZyanU32 comparand, ZyanU32 value);
/**
* @copydoc ZyanAtomicIncrement
*/
static ZyanU32 ZyanAtomicIncrement32(ZyanAtomic32* destination);
/**
* @copydoc ZyanAtomicDecrement
*/
static ZyanU32 ZyanAtomicDecrement32(ZyanAtomic32* destination);
/* ---------------------------------------------------------------------------------------------- */
/* 64-bit */
/* ---------------------------------------------------------------------------------------------- */
/**
* @copydoc ZyanAtomicCompareExchange
*/
static ZyanU64 ZyanAtomicCompareExchange64(ZyanAtomic64* destination,
ZyanU64 comparand, ZyanU64 value);
/**
* @copydoc ZyanAtomicIncrement
*/
static ZyanU64 ZyanAtomicIncrement64(ZyanAtomic64* destination);
/**
* @copydoc ZyanAtomicDecrement
*/
static ZyanU64 ZyanAtomicDecrement64(ZyanAtomic64* destination);
/* ---------------------------------------------------------------------------------------------- */
/* ============================================================================================== */
#if defined(ZYAN_CLANG) || defined(ZYAN_GCC) || defined(ZYAN_ICC)
# include "zydis/Zycore/Internal/AtomicGNU.h"
#elif defined(ZYAN_MSVC)
# include "zydis/Zycore/Internal/AtomicMSVC.h"
#else
# error "Unsupported compiler detected"
#endif
#ifdef __cplusplus
}
#endif
#endif /* ZYCORE_ATOMIC_H */