/*
    Copyright 2005-2013 Intel Corporation.  All Rights Reserved.

    This file is part of Threading Building Blocks.

    Threading Building Blocks is free software; you can redistribute it
    and/or modify it under the terms of the GNU General Public License
    version 2 as published by the Free Software Foundation.

    Threading Building Blocks is distributed in the hope that it will be
    useful, but WITHOUT ANY WARRANTY; without even the implied warranty
    of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with Threading Building Blocks; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    As a special exception, you may use this file as part of a free software
    library without restriction.  Specifically, if other files instantiate
    templates or use macros or inline functions from this file, or you compile
    this file and link it with other files to produce an executable, this
    file does not by itself cause the resulting executable to be covered by
    the GNU General Public License.  This exception does not however
    invalidate any other reasons why the executable file might be covered by
    the GNU General Public License.
*/

#if !defined(__TBB_machine_H) || defined(__TBB_machine_linux_intel64_H)
#error Do not #include this internal file directly; use public TBB headers instead.
#endif

#define __TBB_machine_linux_intel64_H

#include <stdint.h>
#include "gcc_ia32_common.h"

#define __TBB_WORDSIZE 8
#define __TBB_BIG_ENDIAN 0

#define __TBB_compiler_fence() __asm__ __volatile__("": : :"memory")
#define __TBB_control_consistency_helper() __TBB_compiler_fence()
#define __TBB_acquire_consistency_helper() __TBB_compiler_fence()
#define __TBB_release_consistency_helper() __TBB_compiler_fence()

#ifndef __TBB_full_memory_fence
#define __TBB_full_memory_fence() __asm__ __volatile__("mfence": : :"memory")
#endif

#define __TBB_MACHINE_DEFINE_ATOMICS(S,T,X)                                          \
static inline T __TBB_machine_cmpswp##S (volatile void *ptr, T value, T comparand )  \
{                                                                                    \
    T result;                                                                        \
                                                                                     \
    __asm__ __volatile__("lock\ncmpxchg" X " %2,%1"                                  \
                          : "=a"(result), "=m"(*(volatile T*)ptr)                    \
                          : "q"(value), "0"(comparand), "m"(*(volatile T*)ptr)       \
                          : "memory");                                               \
    return result;                                                                   \
}                                                                                    \
                                                                                     \
static inline T __TBB_machine_fetchadd##S(volatile void *ptr, T addend)              \
{                                                                                    \
    T result;                                                                        \
    __asm__ __volatile__("lock\nxadd" X " %0,%1"                                     \
                          : "=r"(result),"=m"(*(volatile T*)ptr)                     \
                          : "0"(addend), "m"(*(volatile T*)ptr)                      \
                          : "memory");                                               \
    return result;                                                                   \
}                                                                                    \
                                                                                     \
static inline  T __TBB_machine_fetchstore##S(volatile void *ptr, T value)            \
{                                                                                    \
    T result;                                                                        \
    __asm__ __volatile__("lock\nxchg" X " %0,%1"                                     \
                          : "=r"(result),"=m"(*(volatile T*)ptr)                     \
                          : "0"(value), "m"(*(volatile T*)ptr)                       \
                          : "memory");                                               \
    return result;                                                                   \
}                                                                                    \

__TBB_MACHINE_DEFINE_ATOMICS(1,int8_t,"")
__TBB_MACHINE_DEFINE_ATOMICS(2,int16_t,"")
__TBB_MACHINE_DEFINE_ATOMICS(4,int32_t,"")
__TBB_MACHINE_DEFINE_ATOMICS(8,int64_t,"q")

#undef __TBB_MACHINE_DEFINE_ATOMICS

static inline void __TBB_machine_or( volatile void *ptr, uint64_t value ) {
    __asm__ __volatile__("lock\norq %1,%0" : "=m"(*(volatile uint64_t*)ptr) : "r"(value), "m"(*(volatile uint64_t*)ptr) : "memory");
}

static inline void __TBB_machine_and( volatile void *ptr, uint64_t value ) {
    __asm__ __volatile__("lock\nandq %1,%0" : "=m"(*(volatile uint64_t*)ptr) : "r"(value), "m"(*(volatile uint64_t*)ptr) : "memory");
}

#define __TBB_AtomicOR(P,V) __TBB_machine_or(P,V)
#define __TBB_AtomicAND(P,V) __TBB_machine_and(P,V)

#define __TBB_USE_FETCHSTORE_AS_FULL_FENCED_STORE           1
#define __TBB_USE_GENERIC_HALF_FENCED_LOAD_STORE            1
#define __TBB_USE_GENERIC_RELAXED_LOAD_STORE                1
#define __TBB_USE_GENERIC_SEQUENTIAL_CONSISTENCY_LOAD_STORE 1
