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x86emitter: support AVX2 (linux only?) 

Nah kidding, it is only the cpu detection for the log

x86 Features Detected:
	SSE2.. SSE3.. SSSE3.. SSE4.1.. SSE4.2.. AVX.. AVX2.. FMA
This commit is contained in:
Gregory Hainaut 2015-11-28 23:39:06 +01:00
parent 02186d5a54
commit 9aec4229d5
4 changed files with 14 additions and 1 deletions
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3
common/include/intrin_x86.h
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@ -96,7 +96,8 @@ static __inline__ __attribute__((always_inline)) s32 _InterlockedIncrement(volat
/*** System information ***/
static __inline__ __attribute__((always_inline)) void __cpuid(int CPUInfo[], const int InfoType)
{
__asm__ __volatile__("cpuid" : "=a" (CPUInfo[0]), "=b" (CPUInfo[1]), "=c" (CPUInfo[2]), "=d" (CPUInfo[3]) : "a" (InfoType));
// ECX allow to select the leaf. Leaf 0 is the one that you want to get, so I just xor the register
__asm__ __volatile__("xor %%ecx, %%ecx\n" "cpuid": "=a" (CPUInfo[0]), "=b" (CPUInfo[1]), "=c" (CPUInfo[2]), "=d" (CPUInfo[3]) : "a" (InfoType));
}
static __inline__ __attribute__((always_inline)) unsigned long long __xgetbv(unsigned int index)

2
common/include/x86emitter/tools.h
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@ -44,6 +44,7 @@ public:
u32 Flags2; // More Feature Flags
u32 EFlags; // Extended Feature Flags
u32 EFlags2; // Extended Feature Flags pg2
u32 SEFlag; // Structured Extended Feature Flags Enumeration
char VendorName[16]; // Vendor/Creator ID
char FamilyName[50]; // the original cpu name
@ -88,6 +89,7 @@ public:
u32 hasStreamingSIMD4Extensions :1;
u32 hasStreamingSIMD4Extensions2 :1;
u32 hasAVX :1;
u32 hasAVX2 :1;
u32 hasFMA :1;
// AMD-specific CPU Features

9
common/src/x86emitter/cpudetect.cpp
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@ -208,6 +208,14 @@ void x86capabilities::Identify()
Flags2 = regs[ 2 ];
}
if ( cmds >= 0x00000007 )
{
// Note: ECX must be 0. I did it directly in the __cpuid asm instrinsic
__cpuid( regs, 0x00000007 );
SEFlag = regs[ 1 ];
}
__cpuid( regs, 0x80000000 );
cmds = regs[ 0 ];
if ( cmds >= 0x80000001 )
@ -271,6 +279,7 @@ void x86capabilities::Identify()
{
hasAVX = ( Flags2 >> 28 ) & 1; //avx
hasFMA = ( Flags2 >> 12 ) & 1; //fma
hasAVX2 = ( SEFlag >> 5 ) & 1; //avx2
}
}

1
pcsx2/System.cpp
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@ -267,6 +267,7 @@ void SysLogMachineCaps()
if( x86caps.hasStreamingSIMD4Extensions ) features[0].Add( L"SSE4.1" );
if( x86caps.hasStreamingSIMD4Extensions2 ) features[0].Add( L"SSE4.2" );
if( x86caps.hasAVX ) features[0].Add( L"AVX" );
if( x86caps.hasAVX2 ) features[0].Add( L"AVX2" );
if( x86caps.hasFMA) features[0].Add( L"FMA" );
if( x86caps.hasMultimediaExtensionsExt ) features[1].Add( L"MMX2 " );