mirror of
https://gitea.wildfiregames.com/0ad/0ad
synced 2026-07-08 07:55:47 -07:00
68 lines
1.8 KiB
C++
68 lines
1.8 KiB
C++
/* Copyright (C) 2009 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* 0 A.D. is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "precompiled.h"
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#if ARCH_AMD64
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#include "amd64.h"
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#include "amd64_asm.h"
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#include "lib/sysdep/cpu.h"
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#if MSC_VERSION
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#include <intrin.h>
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#endif
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void cpu_ConfigureFloatingPoint()
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{
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// 64-bit CPU:s apparently use SSE2 for all floating-point operations, so I
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// *guess* we don't need to do anything...
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}
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void* cpu_memcpy(void* RESTRICT dst, const void* RESTRICT src, size_t size)
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{
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return memcpy(dst, src, size);
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}
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#if MSC_VERSION
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bool cpu_CAS(volatile uintptr_t* location, uintptr_t expected, uintptr_t newValue)
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{
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const uintptr_t initial = _InterlockedCompareExchange64((volatile __int64*)location, newValue, expected);
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return initial == expected;
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}
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void cpu_AtomicAdd(volatile intptr_t* location, intptr_t increment)
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{
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(void)_InterlockedExchangeAdd64(location, increment);
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}
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#elif GCC_VERSION
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void cpu_AtomicAdd(volatile intptr_t* location, intptr_t increment)
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{
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amd64_AtomicAdd(location, increment);
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}
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bool cpu_CAS(volatile uintptr_t* location, uintptr_t expected, uintptr_t newValue)
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{
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return amd64_CAS(location, expected, newValue) ? true : false;
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}
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#endif
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#endif // ARCH_AMD64
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