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Nicky Dasmijn : FIRE-134 , patch fast timers for 64bit & other builds 

Experimental!
meow-7.2.2
Arrehn 2010-12-29 18:37:56 -05:00
parent 75ca2d1f40
commit 3af95e61fe
1 changed files with 34 additions and 6 deletions
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40
indra/llcommon/llfasttimer.h
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@ -128,20 +128,48 @@ inline U32 LLFastTimer::getCPUClockCount32()
#if (LL_LINUX || LL_SOLARIS || LL_DARWIN) && (defined(__i386__) || defined(__amd64__))
// <ND> 64bit comp patch
#ifdef __amd64__
inline void getRDTSC()
{
__asm volatile( "PUSHQ %RDX\n\t"
"XOR %RAX, %RAX\n\t"
"XOR %RDX, %RDX\n\t"
"RDTSC\n\t"
"SHL $0x20,%RDX\n\t"
"OR %RDX, %RAX\n\t"
"POPQ %RDX" );
}
#else
inline void getRDTSC()
{
__asm volatile( "RDTSC" );
}
#endif
inline U64 getRDTSCImpl()
{
typedef unsigned long long (*tGetRDTSC)();
tGetRDTSC pGetRDTSC( (tGetRDTSC)getRDTSC );
return (*pGetRDTSC)();
}
//
// Mac+Linux+Solaris FAST x86 implementation of CPU clock
inline U32 LLFastTimer::getCPUClockCount32()
{
U64 x;
__asm__ volatile (".byte 0x0f, 0x31": "=A"(x));
return (U32)(x >> 8);
return (U32)(getRDTSCImpl() >> 8 );
}
inline U64 LLFastTimer::getCPUClockCount64()
{
U64 x;
__asm__ volatile (".byte 0x0f, 0x31": "=A"(x));
return x;
return getRDTSCImpl();
}
#endif