49 lines
865 B
C
49 lines
865 B
C
//========= Copyright c Valve Corporation, All rights reserved. ============//
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#ifndef TIER0_HARDWARE_TIMER
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#define TIER0_HARDWARE_TIMER
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#include "tier0/platform.h"
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#ifdef GNUC
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inline int GetHardwareClockFast( void )
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{
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unsigned long long int nRet;
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__asm__ volatile (".byte 0x0f, 0x31" : "=A" (nRet)); // rdtsc
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return ( int ) nRet;
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}
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#else
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#ifdef _X360
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inline /*__declspec(naked)*/ int GetHardwareClockFast()
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{
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/*__asm
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{
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lis r3,08FFFh
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ld r3,011E0h(r3)
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rldicl r3,r3,32,32
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blr
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} */
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return __mftb32() << 6;
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}
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#elif defined( _PS3 )
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inline int GetHardwareClockFast()
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{
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// The timebase frequency on PS/3 is 79.8 MHz, see sys_time_get_timebase_frequency()
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// this works out to 40.10025 clock ticks per timebase tick
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return __mftb() * 40;
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}
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#else
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#include <intrin.h>
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inline int GetHardwareClockFast()
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{
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return __rdtsc();
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}
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#endif
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#endif
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#endif |