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Xash3DArchive/launch/cpuinfo.c

534 lines
15 KiB
C

//=======================================================================
// Copyright XashXT Group 2007 ©
// cpuinfo.c - get cpu information
//=======================================================================
#include "const.h"
#include "launch.h"
// Processor Information:
typedef struct cpuinfo_s
{
bool m_bRDTSC : 1; // Is RDTSC supported?
bool m_bCMOV : 1; // Is CMOV supported?
bool m_bFCMOV : 1; // Is FCMOV supported?
bool m_bSSE : 1; // Is SSE supported?
bool m_bSSE2 : 1; // Is SSE2 Supported?
bool m_b3DNow : 1; // Is 3DNow! Supported?
bool m_bMMX : 1; // Is MMX supported?
bool m_bHT : 1; // Is HyperThreading supported?
byte m_usNumLogicCore; // Number op logical processors.
byte m_usNumPhysCore; // Number of physical processors
int64 m_speed; // In cycles per second.
int m_size; // structure size
char* m_szCPUID; // Processor vendor Identification.
} cpuinfo_t;
typedef struct register_s
{
dword eax;
dword ebx;
dword ecx;
dword edx;
bool retval;
} register_t;
static register_t cpuid(uint function )
{
register_t local;
local.retval = true;
_asm pushad;
__try
{
_asm
{
xor edx, edx // Clue the compiler that EDX is about to be used.
mov eax, function // set up CPUID to return processor version and features
// 0 = vendor string, 1 = version info, 2 = cache info
cpuid // code bytes = 0fh, 0a2h
mov local.eax, eax // features returned in eax
mov local.ebx, ebx // features returned in ebx
mov local.ecx, ecx // features returned in ecx
mov local.edx, edx // features returned in edx
}
}
__except(EXCEPTION_EXECUTE_HANDLER)
{
local.retval = false;
}
_asm popad
return local;
}
bool CheckMMXTechnology(void)
{
register_t mmx = cpuid(1);
if( !mmx.retval ) return false;
return ( mmx.edx & 0x800000 ) != 0;
}
bool CheckSSETechnology(void)
{
register_t sse = cpuid(1);
if( !sse.retval ) return false;
return ( sse.edx & 0x2000000L ) != 0;
}
bool CheckSSE2Technology(void)
{
register_t sse2 = cpuid(1);
if( !sse2.retval ) return false;
return ( sse2.edx & 0x04000000 ) != 0;
}
bool Check3DNowTechnology(void)
{
register_t amd = cpuid( 0x80000000 );
if( !amd.retval ) return false;
if( amd.eax > 0x80000000L )
{
amd = cpuid( 0x80000001 );
if( !amd.retval ) return false;
return ( amd.edx & 1<<31 ) != 0;
}
return false;
}
bool CheckCMOVTechnology()
{
register_t cmov = cpuid(1);
if( !cmov.retval ) return false;
return ( cmov.edx & (1<<15) ) != 0;
}
bool CheckFCMOVTechnology(void)
{
register_t fcmov = cpuid(1);
if( !fcmov.retval ) return false;
return ( fcmov.edx & (1<<16) ) != 0;
}
bool CheckRDTSCTechnology(void)
{
register_t rdtsc = cpuid(1);
if( !rdtsc.retval ) return false;
return rdtsc.edx & 0x10 != 0;
}
/*
================
Return the Processor's vendor identification string, or "Generic_x86" if it doesn't exist on this CPU
================
*/
const char* GetProcessorVendorId()
{
static char VendorID[13];
register_t vendor = cpuid(0);
Mem_Set( VendorID, 0, sizeof( VendorID ));
if( !vendor.retval )
{
com_strcpy( VendorID, "Generic_x86" );
}
else
{
Mem_Copy( VendorID+0, &(vendor.ebx), sizeof( vendor.ebx ) );
Mem_Copy( VendorID+4, &(vendor.edx), sizeof( vendor.edx ) );
Mem_Copy( VendorID+8, &(vendor.ecx), sizeof( vendor.ecx ) );
}
return VendorID;
}
/*
================
Returns non-zero if Hyper-Threading Technology is supported on the processors and zero if not.
This does not mean that Hyper-Threading Technology is necessarily enabled.
================
*/
static bool HTSupported(void)
{
const uint HT_BIT = 0x10000000; // EDX[28] - Bit 28 set indicates Hyper-Threading Technology is supported in hardware.
const uint FAMILY_ID = 0x0f00; // EAX[11:8] - Bit 11 thru 8 contains family processor id
const uint EXT_FAMILY_ID = 0x0f00000; // EAX[23:20] - Bit 23 thru 20 contains extended family processor id
const uint PENTIUM4_ID = 0x0f00; // Pentium 4 family processor id
register_t intel1 = cpuid(0);
register_t intel2 = cpuid(1);
if(!intel1.retval || !intel2.retval ) return false;
// Check to see if this is a Pentium 4 or later processor
if (((intel2.eax & FAMILY_ID) == PENTIUM4_ID) || (intel2.eax & EXT_FAMILY_ID))
if (intel1.ebx == 'uneG' && intel1.edx == 'Ieni' && intel1.ecx == 'letn')
return (intel2.edx & HT_BIT) != 0; // Genuine Intel Processor with Hyper-Threading Technology
return false; // This is not a genuine Intel processor.
}
/*
================
Returns the number of logical processors per physical processors.
================
*/
static byte LogicalProcessorsPerPackage(void)
{
const unsigned NUM_LOGICAL_BITS = 0x00FF0000; // EBX[23:16] indicate number of logical processors per package
register_t core = cpuid(1);
if (!HTSupported()) return 1;
if( !core.retval) return 1;
return (byte)((core.ebx & NUM_LOGICAL_BITS) >> 16);
}
int64 ClockSample( void )
{
static int64 m_time = 0;
dword* pSample = (dword *)&m_time;
__asm
{
mov ecx, pSample
rdtsc
mov [ecx], eax
mov [ecx+4], edx
}
return m_time;
}
/*
================
Measure the processor clock speed by sampling the cycle count, waiting
for some fraction of a second, then measuring the elapsed number of cycles.
================
*/
static int64 CalculateClockSpeed()
{
LARGE_INTEGER waitTime, startCount, curCount;
int scale = 5; // Take 1/32 of a second for the measurement.
int64 start, end;
QueryPerformanceCounter(&startCount);
QueryPerformanceFrequency(&waitTime);
waitTime.QuadPart >>= scale;
start = ClockSample();
do
{
QueryPerformanceCounter(&curCount);
}
while(curCount.QuadPart - startCount.QuadPart < waitTime.QuadPart);
end = ClockSample();
return (end - start) << scale;
}
/*
================
GetCPUInfo
================
*/
cpuinfo_t GetCPUInfo( void )
{
static cpuinfo_t pi;
SYSTEM_INFO si;
if( pi.m_size == sizeof( pi ))
return pi; // has the structure already been initialized and filled out?
Mem_Set( &pi, 0, sizeof( pi )); // redundant, but just in case the user somehow messes with the size.
pi.m_size = sizeof(pi); // fill out the structure, and return it:
pi.m_speed = CalculateClockSpeed(); // grab the processor frequency:
// get the logical and physical processor counts:
pi.m_usNumLogicCore = LogicalProcessorsPerPackage();
Mem_Set( &si, 0, sizeof( si ));
GetSystemInfo( &si );
pi.m_usNumPhysCore = si.dwNumberOfProcessors / pi.m_usNumLogicCore;
pi.m_usNumLogicCore *= pi.m_usNumPhysCore;
// make sure I always report at least one, when running WinXP with the /ONECPU switch,
// it likes to report 0 processors for some reason.
if( pi.m_usNumPhysCore == 0 && pi.m_usNumLogicCore == 0 )
{
pi.m_usNumPhysCore = 1;
pi.m_usNumLogicCore = 1;
}
// Determine Processor Features:
pi.m_bRDTSC = CheckRDTSCTechnology();
pi.m_bCMOV = CheckCMOVTechnology();
pi.m_bFCMOV = CheckFCMOVTechnology();
pi.m_bMMX = CheckMMXTechnology();
pi.m_bSSE = CheckSSETechnology();
pi.m_bSSE2 = CheckSSE2Technology();
pi.m_b3DNow = Check3DNowTechnology();
pi.m_szCPUID = (char*)GetProcessorVendorId();
return pi;
}
void Sys_InitMathlib( cpuinfo_t *cpu )
{
size_t size = 1024 * 1024;
int i, start, min, result[8];
void *buf0 = Malloc( size );
void *buf1 = Malloc( size );
int numchecks = 16; // iterations
float a;
// IMPORTANT! compilers with optimized sqrt, sin cos and another funcs
// may does wrong results !!!
if( Sys.app_name == HOST_NORMAL || Sys.app_name == HOST_DEDICATED )
{
// testing sqrt
start = Sys_Milliseconds();
for( i = 1; i < 800000; i++ ) a = sqrtf( i );
a *= 0.00000001;
result[(int)a] = Sys_Milliseconds() - start;
MsgDev( D_NOTE, "crt_sqrt %i ms\n", result[0] );
start = Sys_Milliseconds();
for( i = 1; i < 800000; i++ ) a = com_sqrt( i );
a *= 0.00000001;
result[(int)a+1] = Sys_Milliseconds() - start;
MsgDev( D_NOTE, "com_sqrt %i ms\n", result[1] );
if( cpu->m_b3DNow )
{
start = Sys_Milliseconds();
for( i = 0; i < 800000; i++ ) a = amd_sqrt( i );
a *= 0.00000001;
result[(int)a+2] = Sys_Milliseconds() - start;
MsgDev( D_NOTE, "amd_sqrt %i ms\n", result[2] );
}
else
{
result[2] = 0x7fffffff;
MsgDev( D_NOTE, "amd_sqrt not supported\n" );
}
if( cpu->m_bSSE )
{
start = Sys_Milliseconds();
for( i = 0; i < 800000; i++ ) a = sse_sqrt( i );
a *= 0.00000001;
result[(int)a+3] = Sys_Milliseconds() - start;
MsgDev( D_NOTE, "sse_sqrt %i ms\n", result[3] );
}
else
{
result[3] = 0x7fffffff;
MsgDev( D_NOTE, "sse_sqrt not supported\n" );
}
min = min( result[0], min( result[1], min( result[2], result[3] )));
if( min == result[0] )
{
MsgDev( D_NOTE, "Sys_InitMathlib: using crt_sqrt\n");
com.sqrt = sqrtf;
}
else if( min == result[1] )
{
MsgDev( D_NOTE, "Sys_InitMathlib: using com_sqrt\n");
com.sqrt = com_sqrt;
}
else if( min == result[2] )
{
MsgDev( D_NOTE, "Sys_InitMathlib: using amd_sqrt\n");
com.sqrt = amd_sqrt;
}
else if( min == result[3] )
{
MsgDev( D_NOTE, "Sys_InitMathlib: using sse_sqrt\n");
com.sqrt = sse_sqrt;
}
}
start = Sys_Milliseconds();
for( i = 0; i < numchecks; i++ ) _crt_mem_copy( buf0, buf1, size, __FILE__, __LINE__ );
result[0] = Sys_Milliseconds() - start;
MsgDev( D_NOTE, "crt_memcpy %i ms\n", result[0] );
start = Sys_Milliseconds();
for( i = 0; i < numchecks; i++ ) _asm_mem_copy( buf0, buf1, size, __FILE__, __LINE__ );
result[1] = Sys_Milliseconds() - start;
MsgDev( D_NOTE, "asm_memcpy %i ms\n", result[1] );
start = Sys_Milliseconds();
for( i = 0; i < numchecks; i++ ) _com_mem_copy( buf0, buf1, size, __FILE__, __LINE__ );
result[2] = Sys_Milliseconds() - start;
MsgDev( D_NOTE, "com_memcpy %i ms\n", result[2] );
if( cpu->m_bMMX )
{
start = Sys_Milliseconds();
for( i = 0; i < numchecks; i++ ) _mmx_mem_copy( buf0, buf1, size, __FILE__, __LINE__ );
result[3] = Sys_Milliseconds() - start;
MsgDev( D_NOTE, "mmx_memcpy %i ms\n", result[3] );
}
else
{
result[3] = 0x7fffffff;
MsgDev( D_NOTE, "mmx_memcpy not supported\n" );
}
if( cpu->m_b3DNow )
{
start = Sys_Milliseconds();
for( i = 0; i < numchecks; i++ ) _amd_mem_copy( buf0, buf1, size, __FILE__, __LINE__ );
result[4] = Sys_Milliseconds() - start;
MsgDev( D_NOTE, "amd_memcpy %i ms\n", result[4] );
}
else
{
result[4] = 0x7fffffff;
MsgDev( D_NOTE, "amd_memcpy not supported\n" );
}
min = min( result[0], min( result[1], min( result[2], min( result[3], result[4] ))));
if( min == result[0] )
{
MsgDev( D_NOTE, "Sys_InitMathlib: using crt_memcpy\n" );
com.memcpy = _crt_mem_copy;
}
else if( min == result[1] )
{
MsgDev( D_NOTE, "Sys_InitMathlib: using asm_memcpy\n" );
com.memcpy = _asm_mem_copy;
}
else if( min == result[2] )
{
MsgDev( D_NOTE, "Sys_InitMathlib: using com_memcpy\n" );
com.memcpy = _com_mem_copy;
}
else if( min == result[3] )
{
MsgDev( D_NOTE, "Sys_InitMathlib: using mmx_memcpy\n" );
com.memcpy = _mmx_mem_copy;
}
else if( min == result[4] )
{
MsgDev( D_NOTE, "Sys_InitMathlib: using amd_memcpy\n" );
com.memcpy = _amd_mem_copy;
}
// memset
start = Sys_Milliseconds();
for( i = 0; i < numchecks; i++ ) _crt_mem_set( buf0, 0, size, __FILE__, __LINE__ );
result[0] = Sys_Milliseconds() - start;
MsgDev( D_NOTE, "crt_memset %i ms\n", result[0] );
start = Sys_Milliseconds();
for( i = 0; i < numchecks; i++ ) _asm_mem_set( buf0, 0, size, __FILE__, __LINE__ );
result[1] = Sys_Milliseconds() - start;
MsgDev( D_NOTE, "asm_memset %i ms\n", result[1] );
start = Sys_Milliseconds();
for( i = 0; i < numchecks; i++ ) _com_mem_set( buf0, 0, size, __FILE__, __LINE__ );
result[2] = Sys_Milliseconds() - start;
MsgDev( D_NOTE, "com_memset %i ms\n", result[2] );
if( cpu->m_bMMX )
{
start = Sys_Milliseconds();
for( i = 0; i < numchecks; i++ ) _mmx_mem_set( buf0, 0, size, __FILE__, __LINE__ );
result[3] = Sys_Milliseconds() - start;
MsgDev( D_NOTE, "mmx_memset %i ms\n", result[3] );
}
else
{
result[3] = 0x7fffffff;
MsgDev( D_NOTE, "mmx_memset not supported\n" );
}
min = min( result[0], min( result[1], min( result[2], result[3] )));
if( min == result[0] )
{
MsgDev( D_NOTE, "Sys_InitMathlib: using crt_memset\n" );
com.memset = _crt_mem_set;
}
else if( min == result[1] )
{
MsgDev( D_NOTE, "Sys_InitMathlib: using asm_memset\n" );
com.memset = _asm_mem_set;
}
else if( min == result[2] )
{
MsgDev( D_NOTE, "Sys_InitMathlib: using com_memset\n" );
com.memset = _com_mem_set;
}
else if( min == result[3] )
{
MsgDev( D_NOTE, "Sys_InitMathlib: using mmx_memset\n" );
com.memset = _mmx_mem_set;
}
// release test memory
if( buf0 ) Mem_Free( buf0 );
if( buf1 ) Mem_Free( buf1 );
}
void Sys_InitCPU( void )
{
cpuinfo_t cpu = GetCPUInfo();
char szFeatureString[256];
// Compute Frequency in Mhz:
char* szFrequencyDenomination = "Mhz";
double fFrequency = cpu.m_speed / 1000000.0;
// copy shared info
SI.cpufreq = (float)fFrequency;
SI.cpunum = cpu.m_usNumLogicCore;
// Adjust to Ghz if nessecary:
if( fFrequency > 1000.0 )
{
fFrequency /= 1000.0;
szFrequencyDenomination = "Ghz";
}
com_strcpy(szFeatureString, "" );
if( cpu.m_bMMX ) com_strcat(szFeatureString, "MMX " );
if( cpu.m_b3DNow ) com_strcat(szFeatureString, "3DNow " );
if( cpu.m_bSSE ) com_strcat(szFeatureString, "SSE " );
if( cpu.m_bSSE2 ) com_strcat(szFeatureString, "SSE2 " );
if( cpu.m_bRDTSC ) com_strcat(szFeatureString, "RDTSC " );
if( cpu.m_bCMOV ) com_strcat(szFeatureString, "CMOV " );
if( cpu.m_bFCMOV ) com_strcat(szFeatureString, "FCMOV " );
// Remove the trailing space. There will always be one.
szFeatureString[com_strlen(szFeatureString)-1] = '\0';
// Dump CPU information:
if( cpu.m_usNumLogicCore == 1 ) MsgDev( D_INFO, "CPU: %s [1 core]. Frequency: %.01f %s\n", cpu.m_szCPUID, fFrequency, szFrequencyDenomination );
else
{
char buffer[256] = "";
if( cpu.m_usNumPhysCore != cpu.m_usNumLogicCore )
com_sprintf(buffer, " (%i physical)", (int) cpu.m_usNumPhysCore );
MsgDev(D_INFO, "CPU: %s [%i core's %s]. Frequency: %.01f %s\n ", cpu.m_szCPUID, (int)cpu.m_usNumLogicCore, buffer, fFrequency, szFrequencyDenomination );
}
MsgDev(D_NOTE, "CPU Features: %s\n", szFeatureString );
Com_BuildSqrtTable();
Com_BuildSinCosTable();
Sys_InitMathlib( &cpu );
}