Disable memcmp_mmx for non-msvc compilers and 64-bit. Remove MemcpyFast.S (Linux).

This commit is contained in:
Sacha 2014-08-28 04:47:59 +10:00
parent f287754477
commit bf7c29e4cd
10 changed files with 15 additions and 562 deletions

View File

@ -146,12 +146,6 @@
<ClCompile Include="..\..\src\Utilities\ThreadTools.cpp" />
</ItemGroup>
<ItemGroup>
<CustomBuildStep Include="..\..\src\Utilities\x86\MemcpyFast.S">
<FileType>Document</FileType>
<ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</ExcludedFromBuild>
<ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Devel|Win32'">true</ExcludedFromBuild>
<ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">true</ExcludedFromBuild>
</CustomBuildStep>
<None Include="..\..\include\Utilities\EventSource.inl" />
<None Include="..\..\include\Utilities\TlsVariable.inl" />
</ItemGroup>

View File

@ -223,9 +223,4 @@
<Filter>Header Files</Filter>
</ClInclude>
</ItemGroup>
<ItemGroup>
<CustomBuildStep Include="..\..\src\Utilities\x86\MemcpyFast.S">
<Filter>Source Files\Linux</Filter>
</CustomBuildStep>
</ItemGroup>
</Project>

View File

@ -149,13 +149,6 @@
<ClCompile Include="..\..\src\Utilities\Semaphore.cpp" />
<ClCompile Include="..\..\src\Utilities\ThreadTools.cpp" />
</ItemGroup>
<ItemGroup>
<CustomBuildStep Include="..\..\src\Utilities\x86\MemcpyFast.S">
<FileType>Document</FileType>
<ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</ExcludedFromBuild>
<ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Devel|Win32'">true</ExcludedFromBuild>
<ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">true</ExcludedFromBuild>
</CustomBuildStep>
<None Include="..\..\include\Utilities\EventSource.inl" />
<None Include="..\..\include\Utilities\TlsVariable.inl" />
</ItemGroup>

View File

@ -223,9 +223,4 @@
<Filter>Header Files</Filter>
</ClInclude>
</ItemGroup>
<ItemGroup>
<CustomBuildStep Include="..\..\src\Utilities\x86\MemcpyFast.S">
<Filter>Source Files\Linux</Filter>
</CustomBuildStep>
</ItemGroup>
</Project>

View File

@ -150,12 +150,6 @@
<ClCompile Include="..\..\src\Utilities\ThreadTools.cpp" />
</ItemGroup>
<ItemGroup>
<CustomBuildStep Include="..\..\src\Utilities\x86\MemcpyFast.S">
<FileType>Document</FileType>
<ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</ExcludedFromBuild>
<ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Devel|Win32'">true</ExcludedFromBuild>
<ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">true</ExcludedFromBuild>
</CustomBuildStep>
<None Include="..\..\include\Utilities\EventSource.inl" />
<None Include="..\..\include\Utilities\TlsVariable.inl" />
</ItemGroup>

View File

@ -223,9 +223,4 @@
<Filter>Header Files</Filter>
</ClInclude>
</ItemGroup>
<ItemGroup>
<CustomBuildStep Include="..\..\src\Utilities\x86\MemcpyFast.S">
<Filter>Source Files\Linux</Filter>
</CustomBuildStep>
</ItemGroup>
</Project>

View File

@ -16,23 +16,17 @@
#pragma once
#ifdef __linux__
# include "lnx_memzero.h"
extern "C" void __fastcall memcpy_amd_(void *dest, const void *src, size_t bytes);
extern "C" u8 memcmp_mmx(const void* src1, const void* src2, int cmpsize);
extern "C" void memxor_mmx(void* dst, const void* src1, int cmpsize);
extern void memcpy_amd_qwc(void *dest, const void *src, size_t bytes);
#else
# include "win_memzero.h"
#endif
extern void __fastcall memcpy_amd_(void *dest, const void *src, size_t bytes);
extern void memcpy_amd_qwc(void *dest, const void *src, size_t bytes);
// For 32-bit MSVC compiles, memcmp performs much worse than memcmp_mmx and
// other implementations. So for this combination only, prefer memcmp_mmx
#if defined(_MSC_VER) && !defined(_M_X86_64)
extern u8 memcmp_mmx(const void* src1, const void* src2, int cmpsize);
extern void memxor_mmx(void* dst, const void* src1, int cmpsize);
#else
#define memcmp_mmx memcmp
#endif
// Only used in the Windows version of memzero.h. But it's in Misc.cpp for some reason.

View File

@ -129,13 +129,8 @@ set(UtilitiesSources
wxGuiTools.cpp
wxHelpers.cpp
x86/MemcpyVibes.cpp
# x86/MemcpyFast.cpp
)
# collect .S files
set(UtilitiesSSources
x86/MemcpyFast.S)
# variable with all headers of this library
set(UtilitiesHeaders
../../include/Utilities/Assertions.h
@ -171,13 +166,9 @@ set(UtilitiesHeaders
../../include/Utilities/wxGuiTools.h
PrecompiledHeader.h)
# change language of .S-files to c++
set_source_files_properties(${UtilitiesSSources} PROPERTIES LANGUAGE CXX)
set(UtilitiesFinalSources
${UtilitiesSources}
${UtilitiesHeaders}
${UtilitiesSSources}
)
set(UtilitiesFinalLibs

View File

@ -1,497 +0,0 @@
/* PCSX2 - PS2 Emulator for PCs
* Copyright (C) 2002-2010 PCSX2 Dev Team
*
* PCSX2 is free software: you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* PCSX2 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 PCSX2.
* If not, see <http://www.gnu.org/licenses/>.
*/
#define TINY_BLOCK_COPY 64
#define IN_CACHE_COPY 2 * 1024
#define UNCACHED_COPY 4 * 1024
#define BLOCK_PREFETCH_COPY infinity // no limit for movq/movntq w/block prefetch
#define CACHEBLOCK 80
// Fast assembly routines for x86-64
// zerofrog(@gmail.com)
// and added to by arcum42@gmail.com
.intel_syntax noprefix
.extern _mmx_backup
// mmx memcmp implementation, size has to be a multiple of 8
// returns 0 is equal, nonzero value if not equal
// ~10 times faster than standard memcmp
// (zerofrog)
// u8 memcmp_mmx(const void* src1, const void* src2, int cmpsize)
#define MEMCMP_SRC1 edx
#define MEMCMP_SRC2 esi
#define MEMCMP_SIZE ecx
.global memcmp_mmx
memcmp_mmx:
// make sure mmx regs are stored
// FreezeMMXRegs(1);
//cmp dword ptr [g_EEFreezeRegs], 0
//je memcmp_mmx_begin
//push 1
//call FreezeMMXRegs_
//add esp, 4
memcmp_mmx_begin:
push esi
mov MEMCMP_SRC1, dword ptr [esp+8]
mov MEMCMP_SRC2, dword ptr [esp+12]
mov MEMCMP_SIZE, dword ptr [esp+16]
cmp MEMCMP_SIZE, 32
jl memcmp_Done4
// custom test first 8 to make sure things are ok
movq mm0, [MEMCMP_SRC2]
movq mm1, [MEMCMP_SRC2+8]
pcmpeqd mm0, [MEMCMP_SRC1]
pcmpeqd mm1, [MEMCMP_SRC1+8]
pand mm0, mm1
movq mm2, [MEMCMP_SRC2+16]
pmovmskb eax, mm0
movq mm3, [MEMCMP_SRC2+24]
// check if eq
cmp eax, 0xff
je memcmp_NextComp
mov eax, 1
jmp memcmp_End
memcmp_NextComp:
pcmpeqd mm2, [MEMCMP_SRC1+16]
pcmpeqd mm3, [MEMCMP_SRC1+24]
pand mm2, mm3
pmovmskb eax, mm2
sub MEMCMP_SIZE, 32
add MEMCMP_SRC2, 32
add MEMCMP_SRC1, 32
// check if eq
cmp eax, 0xff
je memcmp_ContinueTest
mov eax, 1
jmp memcmp_End
cmp MEMCMP_SIZE, 64
jl memcmp_Done8
memcmp_Cmp8:
movq mm0, [MEMCMP_SRC2]
movq mm1, [MEMCMP_SRC2+8]
movq mm2, [MEMCMP_SRC2+16]
movq mm3, [MEMCMP_SRC2+24]
movq mm4, [MEMCMP_SRC2+32]
movq mm5, [MEMCMP_SRC2+40]
movq mm6, [MEMCMP_SRC2+48]
movq mm7, [MEMCMP_SRC2+56]
pcmpeqd mm0, [MEMCMP_SRC1]
pcmpeqd mm1, [MEMCMP_SRC1+8]
pcmpeqd mm2, [MEMCMP_SRC1+16]
pcmpeqd mm3, [MEMCMP_SRC1+24]
pand mm0, mm1
pcmpeqd mm4, [MEMCMP_SRC1+32]
pand mm0, mm2
pcmpeqd mm5, [MEMCMP_SRC1+40]
pand mm0, mm3
pcmpeqd mm6, [MEMCMP_SRC1+48]
pand mm0, mm4
pcmpeqd mm7, [MEMCMP_SRC1+56]
pand mm0, mm5
pand mm0, mm6
pand mm0, mm7
pmovmskb eax, mm0
// check if eq
cmp eax, 0xff
je memcmp_Continue
mov eax, 1
jmp memcmp_End
memcmp_Continue:
sub MEMCMP_SIZE, 64
add MEMCMP_SRC2, 64
add MEMCMP_SRC1, 64
memcmp_ContinueTest:
cmp MEMCMP_SIZE, 64
jge memcmp_Cmp8
memcmp_Done8:
test MEMCMP_SIZE, 0x20
jz memcmp_Done4
movq mm0, [MEMCMP_SRC2]
movq mm1, [MEMCMP_SRC2+8]
movq mm2, [MEMCMP_SRC2+16]
movq mm3, [MEMCMP_SRC2+24]
pcmpeqd mm0, [MEMCMP_SRC1]
pcmpeqd mm1, [MEMCMP_SRC1+8]
pcmpeqd mm2, [MEMCMP_SRC1+16]
pcmpeqd mm3, [MEMCMP_SRC1+24]
pand mm0, mm1
pand mm0, mm2
pand mm0, mm3
pmovmskb eax, mm0
sub MEMCMP_SIZE, 32
add MEMCMP_SRC2, 32
add MEMCMP_SRC1, 32
// check if eq
cmp eax, 0xff
je memcmp_Done4
mov eax, 1
jmp memcmp_End
memcmp_Done4:
cmp MEMCMP_SIZE, 24
jne memcmp_Done2
movq mm0, [MEMCMP_SRC2]
movq mm1, [MEMCMP_SRC2+8]
movq mm2, [MEMCMP_SRC2+16]
pcmpeqd mm0, [MEMCMP_SRC1]
pcmpeqd mm1, [MEMCMP_SRC1+8]
pcmpeqd mm2, [MEMCMP_SRC1+16]
pand mm0, mm1
pand mm0, mm2
pmovmskb eax, mm0
// check if eq
cmp eax, 0xff
je memcmp_Done
mov eax, 1
jmp memcmp_End
memcmp_Done2:
cmp MEMCMP_SIZE, 16
jne memcmp_Done1
movq mm0, [MEMCMP_SRC2]
movq mm1, [MEMCMP_SRC2+8]
pcmpeqd mm0, [MEMCMP_SRC1]
pcmpeqd mm1, [MEMCMP_SRC1+8]
pand mm0, mm1
pmovmskb eax, mm0
// check if eq
cmp eax, 0xff
je memcmp_Done
mov eax, 1
jmp memcmp_End
memcmp_Done1:
cmp MEMCMP_SIZE, 8
jne memcmp_Done
mov eax, [MEMCMP_SRC2]
mov MEMCMP_SRC2, [MEMCMP_SRC2+4]
cmp eax, [MEMCMP_SRC1]
je memcmp_Next
mov eax, 1
jmp memcmp_End
memcmp_Next:
cmp MEMCMP_SRC2, [MEMCMP_SRC1+4]
je memcmp_Done
mov eax, 1
jmp memcmp_End
memcmp_Done:
xor eax, eax
memcmp_End:
emms
pop esi
ret
// memxor_mmx
#define MEMXOR_SRC1 edx
#define MEMXOR_SRC2 esi
#define MEMXOR_SIZE ecx
.global memxor_mmx
memxor_mmx:
push esi
mov MEMXOR_SRC1, dword ptr [esp+8]
mov MEMXOR_SRC2, dword ptr [esp+12]
mov MEMXOR_SIZE, dword ptr [esp+16]
cmp MEMXOR_SIZE, 64
jl memxor_Setup4
movq mm0, [MEMXOR_SRC2]
movq mm1, [MEMXOR_SRC2+8]
movq mm2, [MEMXOR_SRC2+16]
movq mm3, [MEMXOR_SRC2+24]
movq mm4, [MEMXOR_SRC2+32]
movq mm5, [MEMXOR_SRC2+40]
movq mm6, [MEMXOR_SRC2+48]
movq mm7, [MEMXOR_SRC2+56]
sub MEMXOR_SIZE, 64
add MEMXOR_SRC2, 64
cmp MEMXOR_SIZE, 64
jl memxor_End8
memxor_Cmp8:
pxor mm0, [MEMXOR_SRC2]
pxor mm1, [MEMXOR_SRC2+8]
pxor mm2, [MEMXOR_SRC2+16]
pxor mm3, [MEMXOR_SRC2+24]
pxor mm4, [MEMXOR_SRC2+32]
pxor mm5, [MEMXOR_SRC2+40]
pxor mm6, [MEMXOR_SRC2+48]
pxor mm7, [MEMXOR_SRC2+56]
sub MEMXOR_SIZE, 64
add MEMXOR_SRC2, 64
cmp MEMXOR_SIZE, 64
jge memxor_Cmp8
memxor_End8:
pxor mm0, mm4
pxor mm1, mm5
pxor mm2, mm6
pxor mm3, mm7
cmp MEMXOR_SIZE, 32
jl memxor_End4
pxor mm0, [MEMXOR_SRC2]
pxor mm1, [MEMXOR_SRC2+8]
pxor mm2, [MEMXOR_SRC2+16]
pxor mm3, [MEMXOR_SRC2+24]
sub MEMXOR_SIZE, 32
add MEMXOR_SRC2, 32
jmp memxor_End4
memxor_Setup4:
cmp MEMXOR_SIZE, 32
jl memxor_Setup2
movq mm0, [MEMXOR_SRC2]
movq mm1, [MEMXOR_SRC2+8]
movq mm2, [MEMXOR_SRC2+16]
movq mm3, [MEMXOR_SRC2+24]
sub MEMXOR_SIZE, 32
add MEMXOR_SRC2, 32
memxor_End4:
pxor mm0, mm2
pxor mm1, mm3
cmp MEMXOR_SIZE, 16
jl memxor_End2
pxor mm0, [MEMXOR_SRC2]
pxor mm1, [MEMXOR_SRC2+8]
sub MEMXOR_SIZE, 16
add MEMXOR_SRC2, 16
jmp memxor_End2
memxor_Setup2:
cmp MEMXOR_SIZE, 16
jl memxor_Setup1
movq mm0, [MEMXOR_SRC2]
movq mm1, [MEMXOR_SRC2+8]
sub MEMXOR_SIZE, 16
add MEMXOR_SRC2, 16
memxor_End2:
pxor mm0, mm1
cmp MEMXOR_SIZE, 8
jl memxor_End1
pxor mm0, [MEMXOR_SRC2]
memxor_End1:
movq [MEMXOR_SRC1], mm0
jmp memxor_End
memxor_Setup1:
movq mm0, [MEMXOR_SRC2]
movq [MEMXOR_SRC1], mm0
memxor_End:
emms
pop esi
ret
// void __fastcall memcpy_amd_(void *dest, const void *src, size_t n)
.global memcpy_amd_
memcpy_amd_:
push edi
push esi
mov edi, ecx // destination
mov esi, edx // source
mov ecx, [esp+12] // number of bytes to copy
mov eax, ecx // keep a copy of count
cld
cmp eax, TINY_BLOCK_COPY
jb $memcpy_ic_3 // tiny? skip mmx copy
cmp eax, 32*1024 // don't align between 32k-64k because
jbe $memcpy_do_align // it appears to be slower
cmp eax, 64*1024
jbe $memcpy_align_done
$memcpy_do_align:
mov eax, 8 // a trick that's faster than rep movsb...
sub eax, edi // align destination to qword
and eax, 0b111 // get the low bits
sub ecx, eax // update copy count
neg eax // set up to jump into the array
add eax, offset $memcpy_align_done
jmp eax // jump to array of movsb's
.align 4
movsb
movsb
movsb
movsb
movsb
movsb
movsb
movsb
$memcpy_align_done: // destination is dword aligned
mov eax, ecx // number of bytes left to copy
shr eax, 6 // get 64-byte block count
jz $memcpy_ic_2 // finish the last few bytes
cmp eax, IN_CACHE_COPY/64 // too big 4 cache? use uncached copy
jae $memcpy_uc_test
// This is small block copy that uses the MMX registers to copy 8 bytes
// at a time. It uses the "unrolled loop" optimization, and also uses
// the software prefetch instruction to get the data into the cache.
.align 16
$memcpy_ic_1: // 64-byte block copies, in-cache copy
prefetchnta [esi + (200*64/34+192)] // start reading ahead
movq mm0, [esi+0] // read 64 bits
movq mm1, [esi+8]
movq [edi+0], mm0 //write 64 bits
movq [edi+8], mm1 // note: the normal movq writes the
movq mm2, [esi+16] // data to cache; a cache line will be
movq mm3, [esi+24] // allocated as needed, to store the data
movq [edi+16], mm2
movq [edi+24], mm3
movq mm0, [esi+32]
movq mm1, [esi+40]
movq [edi+32], mm0
movq [edi+40], mm1
movq mm2, [esi+48]
movq mm3, [esi+56]
movq [edi+48], mm2
movq [edi+56], mm3
add esi, 64 // update source pointer
add edi, 64 // update destination pointer
dec eax // count down
jnz $memcpy_ic_1 // last 64-byte block?
$memcpy_ic_2:
mov eax, ecx // has valid low 6 bits of the byte count
$memcpy_ic_3:
shr eax, 2 // dword count
and eax, 0b1111 // only look at the "remainder" bits
neg eax // set up to jump into the array
add eax, offset $memcpy_last_few
jmp eax // jump to array of movsd's
$memcpy_uc_test:
or eax, eax // tail end of block prefetch will jump here
jz $memcpy_ic_2 // no more 64-byte blocks left
// For larger blocks, which will spill beyond the cache, it's faster to
// use the Streaming Store instruction MOVNTQ. This write instruction
// bypasses the cache and writes straight to main memory. This code also
// uses the software prefetch instruction to pre-read the data.
.align 16
$memcpy_uc_1: // 64-byte blocks, uncached copy
prefetchnta [esi + (200*64/34+192)] // start reading ahead
movq mm0,[esi+0] // read 64 bits
add edi,64 // update destination pointer
movq mm1,[esi+8]
add esi,64 // update source pointer
movq mm2,[esi-48]
movntq [edi-64], mm0 // write 64 bits, bypassing the cache
movq mm0,[esi-40] // note: movntq also prevents the CPU
movntq [edi-56], mm1 // from READING the destination address
movq mm1,[esi-32] // into the cache, only to be over-written
movntq [edi-48], mm2 // so that also helps performance
movq mm2,[esi-24]
movntq [edi-40], mm0
movq mm0,[esi-16]
movntq [edi-32], mm1
movq mm1,[esi-8]
movntq [edi-24], mm2
movntq [edi-16],mm0
dec eax
movntq [edi-8], mm1
jnz $memcpy_uc_1 // last 64-byte block?
jmp $memcpy_ic_2 // almost done (not needed because large copy below was removed)
// For the largest size blocks, a special technique called Block Prefetch
// can be used to accelerate the read operations. Block Prefetch reads
// one address per cache line, for a series of cache lines, in a short loop.
// This is faster than using software prefetch. The technique is great for
// getting maximum read bandwidth, especially in DDR memory systems.
// Note: Pcsx2 rarely invokes large copies, so this mode has been disabled to
// help keep the code cache footprint of memcpy_fast to a minimum.
// <Code removed here>
// The smallest copy uses the X86 "movsd" instruction, in an optimized
// form which is an "unrolled loop". Then it handles the last few bytes.
.align 16
movsd
movsd // perform last 1-15 dword copies
movsd
movsd
movsd
movsd
movsd
movsd
movsd
movsd // perform last 1-7 dword copies
movsd
movsd
movsd
movsd
movsd
movsd
$memcpy_last_few: // dword aligned from before movsd's
and ecx, 0b11 // the last few cows must come home
jz $memcpy_final // no more, let's leave
rep movsb // the last 1, 2, or 3 bytes
$memcpy_final:
emms // clean up the MMX state
sfence // flush the write buffer
//mov eax, [dest] // ret value = destination pointer
pop esi
pop edi
ret 4
#if defined(__linux__) && defined(__ELF__)
.section .note.GNU-stack,"",%progbits
#endif

View File

@ -192,8 +192,7 @@ typedef u32 (__fastcall *mVUCall)(void*, void*);
#else
// Note: GCC builds crash with custom search function, because
// they're not guaranteeing 16-byte alignment on the structs :(
// #define mVUquickSearch(dest, src, size) (!memcmp(dest, src, size))
#define mVUquickSearch(dest, src, size) (!memcmp_mmx(dest, src, size))
#define mVUquickSearch(dest, src, size) (!memcmp(dest, src, size))
#define mVUemitSearch()
#endif
//------------------------------------------------------------------