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80 lines
2.5 KiB
C++
80 lines
2.5 KiB
C++
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/*
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---------------------------------------------------------------------------
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Open Asset Import Library (assimp)
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---------------------------------------------------------------------------
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Copyright (c) 2006-2019, assimp team
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All rights reserved.
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Redistribution and use of this software in source and binary forms,
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with or without modification, are permitted provided that the following
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conditions are met:
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* Redistributions of source code must retain the above
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copyright notice, this list of conditions and the
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following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the
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following disclaimer in the documentation and/or other
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materials provided with the distribution.
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* Neither the name of the assimp team, nor the names of its
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contributors may be used to endorse or promote products
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derived from this software without specific prior
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written permission of the assimp team.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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---------------------------------------------------------------------------
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*/
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#include "simd.h"
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namespace Assimp {
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bool CPUSupportsSSE2() {
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#if defined(__x86_64__) || defined(_M_X64)
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//* x86_64 always has SSE2 instructions */
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return true;
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#elif defined(__GNUC__) && defined(i386)
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// for GCC x86 we check cpuid
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unsigned int d;
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__asm__(
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"pushl %%ebx\n\t"
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"cpuid\n\t"
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"popl %%ebx\n\t"
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: "=d" ( d )
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:"a" ( 1 ) );
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return ( d & 0x04000000 ) != 0;
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#elif (defined(_MSC_VER) && defined(_M_IX86))
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// also check cpuid for MSVC x86
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unsigned int d;
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__asm {
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xor eax, eax
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inc eax
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push ebx
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cpuid
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pop ebx
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mov d, edx
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}
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return ( d & 0x04000000 ) != 0;
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#else
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return false;
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#endif
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}
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} // Namespace Assimp
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