mirror of
https://github.com/dhewm/dhewm3-sdk.git
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afebd7e1e5
Don't include the lazy precompiled.h everywhere, only what's required for the compilation unit. platform.h needs to be included instead to provide all essential defines and types. All includes use the relative path to the neo or the game specific root. Move all idlib related includes from idlib/Lib.h to precompiled.h. precompiled.h still exists for the MFC stuff in tools/. Add some missing header guards.
364 lines
7.5 KiB
C++
364 lines
7.5 KiB
C++
/*
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===========================================================================
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Doom 3 GPL Source Code
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Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company.
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This file is part of the Doom 3 GPL Source Code ("Doom 3 Source Code").
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Doom 3 Source Code 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 3 of the License, or
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(at your option) any later version.
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Doom 3 Source Code 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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You should have received a copy of the GNU General Public License
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along with Doom 3 Source Code. If not, see <http://www.gnu.org/licenses/>.
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In addition, the Doom 3 Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 Source Code. If not, please request a copy in writing from id Software at the address below.
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If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
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===========================================================================
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*/
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#include "sys/platform.h"
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#include "idlib/math/Simd_MMX.h"
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//===============================================================
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//
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// MMX implementation of idSIMDProcessor
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//
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//===============================================================
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#if defined(__GNUC__) && defined(__MMX__)
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/*
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============
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idSIMD_MMX::GetName
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============
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*/
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const char * idSIMD_MMX::GetName( void ) const {
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return "MMX";
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}
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#elif defined(_WIN32)
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#define EMMS_INSTRUCTION __asm emms
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/*
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============
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idSIMD_MMX::GetName
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============
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*/
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const char * idSIMD_MMX::GetName( void ) const {
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return "MMX";
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}
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/*
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================
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MMX_Memcpy8B
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================
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*/
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void MMX_Memcpy8B( void *dest, const void *src, const int count ) {
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_asm {
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mov esi, src
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mov edi, dest
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mov ecx, count
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shr ecx, 3 // 8 bytes per iteration
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loop1:
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movq mm1, 0[ESI] // Read in source data
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movntq 0[EDI], mm1 // Non-temporal stores
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add esi, 8
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add edi, 8
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dec ecx
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jnz loop1
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}
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EMMS_INSTRUCTION
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}
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/*
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================
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MMX_Memcpy64B
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165MB/sec
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================
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*/
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void MMX_Memcpy64B( void *dest, const void *src, const int count ) {
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_asm {
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mov esi, src
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mov edi, dest
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mov ecx, count
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shr ecx, 6 // 64 bytes per iteration
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loop1:
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prefetchnta 64[ESI] // Prefetch next loop, non-temporal
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prefetchnta 96[ESI]
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movq mm1, 0[ESI] // Read in source data
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movq mm2, 8[ESI]
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movq mm3, 16[ESI]
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movq mm4, 24[ESI]
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movq mm5, 32[ESI]
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movq mm6, 40[ESI]
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movq mm7, 48[ESI]
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movq mm0, 56[ESI]
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movntq 0[EDI], mm1 // Non-temporal stores
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movntq 8[EDI], mm2
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movntq 16[EDI], mm3
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movntq 24[EDI], mm4
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movntq 32[EDI], mm5
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movntq 40[EDI], mm6
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movntq 48[EDI], mm7
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movntq 56[EDI], mm0
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add esi, 64
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add edi, 64
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dec ecx
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jnz loop1
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}
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EMMS_INSTRUCTION
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}
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/*
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================
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MMX_Memcpy2kB
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240MB/sec
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================
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*/
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void MMX_Memcpy2kB( void *dest, const void *src, const int count ) {
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byte *tbuf = (byte *)_alloca16(2048);
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__asm {
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push ebx
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mov esi, src
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mov ebx, count
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shr ebx, 11 // 2048 bytes at a time
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mov edi, dest
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loop2k:
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push edi // copy 2k into temporary buffer
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mov edi, tbuf
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mov ecx, 32
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loopMemToL1:
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prefetchnta 64[ESI] // Prefetch next loop, non-temporal
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prefetchnta 96[ESI]
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movq mm1, 0[ESI] // Read in source data
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movq mm2, 8[ESI]
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movq mm3, 16[ESI]
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movq mm4, 24[ESI]
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movq mm5, 32[ESI]
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movq mm6, 40[ESI]
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movq mm7, 48[ESI]
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movq mm0, 56[ESI]
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movq 0[EDI], mm1 // Store into L1
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movq 8[EDI], mm2
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movq 16[EDI], mm3
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movq 24[EDI], mm4
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movq 32[EDI], mm5
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movq 40[EDI], mm6
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movq 48[EDI], mm7
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movq 56[EDI], mm0
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add esi, 64
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add edi, 64
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dec ecx
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jnz loopMemToL1
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pop edi // Now copy from L1 to system memory
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push esi
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mov esi, tbuf
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mov ecx, 32
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loopL1ToMem:
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movq mm1, 0[ESI] // Read in source data from L1
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movq mm2, 8[ESI]
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movq mm3, 16[ESI]
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movq mm4, 24[ESI]
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movq mm5, 32[ESI]
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movq mm6, 40[ESI]
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movq mm7, 48[ESI]
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movq mm0, 56[ESI]
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movntq 0[EDI], mm1 // Non-temporal stores
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movntq 8[EDI], mm2
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movntq 16[EDI], mm3
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movntq 24[EDI], mm4
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movntq 32[EDI], mm5
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movntq 40[EDI], mm6
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movntq 48[EDI], mm7
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movntq 56[EDI], mm0
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add esi, 64
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add edi, 64
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dec ecx
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jnz loopL1ToMem
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pop esi // Do next 2k block
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dec ebx
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jnz loop2k
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pop ebx
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}
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EMMS_INSTRUCTION
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}
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/*
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================
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idSIMD_MMX::Memcpy
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optimized memory copy routine that handles all alignment cases and block sizes efficiently
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================
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*/
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void VPCALL idSIMD_MMX::Memcpy( void *dest0, const void *src0, const int count0 ) {
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// if copying more than 16 bytes and we can copy 8 byte aligned
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if ( count0 > 16 && !( ( (int)dest0 ^ (int)src0 ) & 7 ) ) {
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byte *dest = (byte *)dest0;
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byte *src = (byte *)src0;
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// copy up to the first 8 byte aligned boundary
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int count = ((int)dest) & 7;
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memcpy( dest, src, count );
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dest += count;
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src += count;
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count = count0 - count;
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// if there are multiple blocks of 2kB
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if ( count & ~4095 ) {
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MMX_Memcpy2kB( dest, src, count );
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src += (count & ~2047);
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dest += (count & ~2047);
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count &= 2047;
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}
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// if there are blocks of 64 bytes
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if ( count & ~63 ) {
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MMX_Memcpy64B( dest, src, count );
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src += (count & ~63);
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dest += (count & ~63);
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count &= 63;
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}
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// if there are blocks of 8 bytes
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if ( count & ~7 ) {
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MMX_Memcpy8B( dest, src, count );
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src += (count & ~7);
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dest += (count & ~7);
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count &= 7;
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}
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// copy any remaining bytes
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memcpy( dest, src, count );
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} else {
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// use the regular one if we cannot copy 8 byte aligned
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memcpy( dest0, src0, count0 );
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}
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// the MMX_Memcpy* functions use MOVNTQ, issue a fence operation
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__asm {
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sfence
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}
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}
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/*
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================
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idSIMD_MMX::Memset
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================
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*/
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void VPCALL idSIMD_MMX::Memset( void* dest0, const int val, const int count0 ) {
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union {
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byte bytes[8];
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word words[4];
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dword dwords[2];
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} dat;
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byte *dest = (byte *)dest0;
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int count = count0;
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while ( count > 0 && (((int)dest) & 7) ) {
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*dest = val;
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dest++;
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count--;
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}
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if ( !count ) {
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return;
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}
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dat.bytes[0] = val;
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dat.bytes[1] = val;
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dat.words[1] = dat.words[0];
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dat.dwords[1] = dat.dwords[0];
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if ( count >= 64 ) {
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__asm {
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mov edi, dest
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mov ecx, count
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shr ecx, 6 // 64 bytes per iteration
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movq mm1, dat // Read in source data
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movq mm2, mm1
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movq mm3, mm1
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movq mm4, mm1
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movq mm5, mm1
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movq mm6, mm1
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movq mm7, mm1
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movq mm0, mm1
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loop1:
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movntq 0[EDI], mm1 // Non-temporal stores
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movntq 8[EDI], mm2
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movntq 16[EDI], mm3
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movntq 24[EDI], mm4
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movntq 32[EDI], mm5
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movntq 40[EDI], mm6
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movntq 48[EDI], mm7
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movntq 56[EDI], mm0
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add edi, 64
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dec ecx
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jnz loop1
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}
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dest += ( count & ~63 );
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count &= 63;
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}
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if ( count >= 8 ) {
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__asm {
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mov edi, dest
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mov ecx, count
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shr ecx, 3 // 8 bytes per iteration
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movq mm1, dat // Read in source data
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loop2:
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movntq 0[EDI], mm1 // Non-temporal stores
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add edi, 8
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dec ecx
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jnz loop2
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}
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dest += (count & ~7);
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count &= 7;
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}
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while ( count > 0 ) {
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*dest = val;
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dest++;
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count--;
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}
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EMMS_INSTRUCTION
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// the MMX_Memcpy* functions use MOVNTQ, issue a fence operation
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__asm {
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sfence
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}
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}
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#endif /* _WIN32 */
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