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Diffstat (limited to 'js/src/zydis/Zycore/Atomic.h')
-rw-r--r-- | js/src/zydis/Zycore/Atomic.h | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/js/src/zydis/Zycore/Atomic.h b/js/src/zydis/Zycore/Atomic.h new file mode 100644 index 0000000000..6f5073087d --- /dev/null +++ b/js/src/zydis/Zycore/Atomic.h @@ -0,0 +1,236 @@ +/*************************************************************************************************** + + 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 */ |