mirror of
https://github.com/dhewm/dhewm3-sdk.git
synced 2024-11-27 23:02:32 +00:00
364 lines
7.5 KiB
C++
364 lines
7.5 KiB
C++
/*
|
|
===========================================================================
|
|
|
|
Doom 3 GPL Source Code
|
|
Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company.
|
|
|
|
This file is part of the Doom 3 GPL Source Code ("Doom 3 Source Code").
|
|
|
|
Doom 3 Source Code is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
Doom 3 Source Code 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 Doom 3 Source Code. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
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.
|
|
|
|
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.
|
|
|
|
===========================================================================
|
|
*/
|
|
|
|
#include "sys/platform.h"
|
|
|
|
#include "idlib/math/Simd_MMX.h"
|
|
|
|
//===============================================================
|
|
//
|
|
// MMX implementation of idSIMDProcessor
|
|
//
|
|
//===============================================================
|
|
|
|
#if defined(__GNUC__) && defined(__MMX__)
|
|
/*
|
|
============
|
|
idSIMD_MMX::GetName
|
|
============
|
|
*/
|
|
const char * idSIMD_MMX::GetName( void ) const {
|
|
return "MMX";
|
|
}
|
|
|
|
#elif defined(_MSC_VER) && defined(_M_IX86)
|
|
|
|
#define EMMS_INSTRUCTION __asm emms
|
|
|
|
/*
|
|
============
|
|
idSIMD_MMX::GetName
|
|
============
|
|
*/
|
|
const char * idSIMD_MMX::GetName( void ) const {
|
|
return "MMX";
|
|
}
|
|
|
|
/*
|
|
================
|
|
MMX_Memcpy8B
|
|
================
|
|
*/
|
|
void MMX_Memcpy8B( void *dest, const void *src, const int count ) {
|
|
_asm {
|
|
mov esi, src
|
|
mov edi, dest
|
|
mov ecx, count
|
|
shr ecx, 3 // 8 bytes per iteration
|
|
|
|
loop1:
|
|
movq mm1, 0[ESI] // Read in source data
|
|
movntq 0[EDI], mm1 // Non-temporal stores
|
|
|
|
add esi, 8
|
|
add edi, 8
|
|
dec ecx
|
|
jnz loop1
|
|
|
|
}
|
|
EMMS_INSTRUCTION
|
|
}
|
|
|
|
/*
|
|
================
|
|
MMX_Memcpy64B
|
|
|
|
165MB/sec
|
|
================
|
|
*/
|
|
void MMX_Memcpy64B( void *dest, const void *src, const int count ) {
|
|
_asm {
|
|
mov esi, src
|
|
mov edi, dest
|
|
mov ecx, count
|
|
shr ecx, 6 // 64 bytes per iteration
|
|
|
|
loop1:
|
|
prefetchnta 64[ESI] // Prefetch next loop, non-temporal
|
|
prefetchnta 96[ESI]
|
|
|
|
movq mm1, 0[ESI] // Read in source data
|
|
movq mm2, 8[ESI]
|
|
movq mm3, 16[ESI]
|
|
movq mm4, 24[ESI]
|
|
movq mm5, 32[ESI]
|
|
movq mm6, 40[ESI]
|
|
movq mm7, 48[ESI]
|
|
movq mm0, 56[ESI]
|
|
|
|
movntq 0[EDI], mm1 // Non-temporal stores
|
|
movntq 8[EDI], mm2
|
|
movntq 16[EDI], mm3
|
|
movntq 24[EDI], mm4
|
|
movntq 32[EDI], mm5
|
|
movntq 40[EDI], mm6
|
|
movntq 48[EDI], mm7
|
|
movntq 56[EDI], mm0
|
|
|
|
add esi, 64
|
|
add edi, 64
|
|
dec ecx
|
|
jnz loop1
|
|
}
|
|
EMMS_INSTRUCTION
|
|
}
|
|
|
|
/*
|
|
================
|
|
MMX_Memcpy2kB
|
|
|
|
240MB/sec
|
|
================
|
|
*/
|
|
void MMX_Memcpy2kB( void *dest, const void *src, const int count ) {
|
|
byte *tbuf = (byte *)_alloca16(2048);
|
|
__asm {
|
|
push ebx
|
|
mov esi, src
|
|
mov ebx, count
|
|
shr ebx, 11 // 2048 bytes at a time
|
|
mov edi, dest
|
|
|
|
loop2k:
|
|
push edi // copy 2k into temporary buffer
|
|
mov edi, tbuf
|
|
mov ecx, 32
|
|
|
|
loopMemToL1:
|
|
prefetchnta 64[ESI] // Prefetch next loop, non-temporal
|
|
prefetchnta 96[ESI]
|
|
|
|
movq mm1, 0[ESI] // Read in source data
|
|
movq mm2, 8[ESI]
|
|
movq mm3, 16[ESI]
|
|
movq mm4, 24[ESI]
|
|
movq mm5, 32[ESI]
|
|
movq mm6, 40[ESI]
|
|
movq mm7, 48[ESI]
|
|
movq mm0, 56[ESI]
|
|
|
|
movq 0[EDI], mm1 // Store into L1
|
|
movq 8[EDI], mm2
|
|
movq 16[EDI], mm3
|
|
movq 24[EDI], mm4
|
|
movq 32[EDI], mm5
|
|
movq 40[EDI], mm6
|
|
movq 48[EDI], mm7
|
|
movq 56[EDI], mm0
|
|
add esi, 64
|
|
add edi, 64
|
|
dec ecx
|
|
jnz loopMemToL1
|
|
|
|
pop edi // Now copy from L1 to system memory
|
|
push esi
|
|
mov esi, tbuf
|
|
mov ecx, 32
|
|
|
|
loopL1ToMem:
|
|
movq mm1, 0[ESI] // Read in source data from L1
|
|
movq mm2, 8[ESI]
|
|
movq mm3, 16[ESI]
|
|
movq mm4, 24[ESI]
|
|
movq mm5, 32[ESI]
|
|
movq mm6, 40[ESI]
|
|
movq mm7, 48[ESI]
|
|
movq mm0, 56[ESI]
|
|
|
|
movntq 0[EDI], mm1 // Non-temporal stores
|
|
movntq 8[EDI], mm2
|
|
movntq 16[EDI], mm3
|
|
movntq 24[EDI], mm4
|
|
movntq 32[EDI], mm5
|
|
movntq 40[EDI], mm6
|
|
movntq 48[EDI], mm7
|
|
movntq 56[EDI], mm0
|
|
|
|
add esi, 64
|
|
add edi, 64
|
|
dec ecx
|
|
jnz loopL1ToMem
|
|
|
|
pop esi // Do next 2k block
|
|
dec ebx
|
|
jnz loop2k
|
|
pop ebx
|
|
}
|
|
EMMS_INSTRUCTION
|
|
}
|
|
|
|
|
|
/*
|
|
================
|
|
idSIMD_MMX::Memcpy
|
|
|
|
optimized memory copy routine that handles all alignment cases and block sizes efficiently
|
|
================
|
|
*/
|
|
void VPCALL idSIMD_MMX::Memcpy( void *dest0, const void *src0, const int count0 ) {
|
|
// if copying more than 16 bytes and we can copy 8 byte aligned
|
|
if ( count0 > 16 && !( ( (int)dest0 ^ (int)src0 ) & 7 ) ) {
|
|
byte *dest = (byte *)dest0;
|
|
byte *src = (byte *)src0;
|
|
|
|
// copy up to the first 8 byte aligned boundary
|
|
int count = ((int)dest) & 7;
|
|
memcpy( dest, src, count );
|
|
dest += count;
|
|
src += count;
|
|
count = count0 - count;
|
|
|
|
// if there are multiple blocks of 2kB
|
|
if ( count & ~4095 ) {
|
|
MMX_Memcpy2kB( dest, src, count );
|
|
src += (count & ~2047);
|
|
dest += (count & ~2047);
|
|
count &= 2047;
|
|
}
|
|
|
|
// if there are blocks of 64 bytes
|
|
if ( count & ~63 ) {
|
|
MMX_Memcpy64B( dest, src, count );
|
|
src += (count & ~63);
|
|
dest += (count & ~63);
|
|
count &= 63;
|
|
}
|
|
|
|
// if there are blocks of 8 bytes
|
|
if ( count & ~7 ) {
|
|
MMX_Memcpy8B( dest, src, count );
|
|
src += (count & ~7);
|
|
dest += (count & ~7);
|
|
count &= 7;
|
|
}
|
|
|
|
// copy any remaining bytes
|
|
memcpy( dest, src, count );
|
|
} else {
|
|
// use the regular one if we cannot copy 8 byte aligned
|
|
memcpy( dest0, src0, count0 );
|
|
}
|
|
|
|
// the MMX_Memcpy* functions use MOVNTQ, issue a fence operation
|
|
__asm {
|
|
sfence
|
|
}
|
|
}
|
|
|
|
/*
|
|
================
|
|
idSIMD_MMX::Memset
|
|
================
|
|
*/
|
|
void VPCALL idSIMD_MMX::Memset( void* dest0, const int val, const int count0 ) {
|
|
union {
|
|
byte bytes[8];
|
|
word words[4];
|
|
dword dwords[2];
|
|
} dat;
|
|
|
|
byte *dest = (byte *)dest0;
|
|
int count = count0;
|
|
|
|
while ( count > 0 && (((int)dest) & 7) ) {
|
|
*dest = val;
|
|
dest++;
|
|
count--;
|
|
}
|
|
if ( !count ) {
|
|
return;
|
|
}
|
|
|
|
dat.bytes[0] = val;
|
|
dat.bytes[1] = val;
|
|
dat.words[1] = dat.words[0];
|
|
dat.dwords[1] = dat.dwords[0];
|
|
|
|
if ( count >= 64 ) {
|
|
__asm {
|
|
mov edi, dest
|
|
mov ecx, count
|
|
shr ecx, 6 // 64 bytes per iteration
|
|
movq mm1, dat // Read in source data
|
|
movq mm2, mm1
|
|
movq mm3, mm1
|
|
movq mm4, mm1
|
|
movq mm5, mm1
|
|
movq mm6, mm1
|
|
movq mm7, mm1
|
|
movq mm0, mm1
|
|
loop1:
|
|
movntq 0[EDI], mm1 // Non-temporal stores
|
|
movntq 8[EDI], mm2
|
|
movntq 16[EDI], mm3
|
|
movntq 24[EDI], mm4
|
|
movntq 32[EDI], mm5
|
|
movntq 40[EDI], mm6
|
|
movntq 48[EDI], mm7
|
|
movntq 56[EDI], mm0
|
|
|
|
add edi, 64
|
|
dec ecx
|
|
jnz loop1
|
|
}
|
|
dest += ( count & ~63 );
|
|
count &= 63;
|
|
}
|
|
|
|
if ( count >= 8 ) {
|
|
__asm {
|
|
mov edi, dest
|
|
mov ecx, count
|
|
shr ecx, 3 // 8 bytes per iteration
|
|
movq mm1, dat // Read in source data
|
|
loop2:
|
|
movntq 0[EDI], mm1 // Non-temporal stores
|
|
|
|
add edi, 8
|
|
dec ecx
|
|
jnz loop2
|
|
}
|
|
dest += (count & ~7);
|
|
count &= 7;
|
|
}
|
|
|
|
while ( count > 0 ) {
|
|
*dest = val;
|
|
dest++;
|
|
count--;
|
|
}
|
|
|
|
EMMS_INSTRUCTION
|
|
|
|
// the MMX_Memcpy* functions use MOVNTQ, issue a fence operation
|
|
__asm {
|
|
sfence
|
|
}
|
|
}
|
|
|
|
#endif /* _MSC_VER */
|