SIMLIB/C++
3.07
src
rdtsc.h
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/*
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* rdtsc.h
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* -----------------------------------------------------------------
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* function for reading 64 bit timer (x86: Pentium, K6, etc.)
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* for GNU C/C++ only
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*
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*/
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#ifndef __GNUC__
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#error "Use GNU C, please"
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#endif
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// universal x86, x86-64 code:
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static
__inline__
unsigned
long
long
rdtsc
(
void
)
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{
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unsigned
a, d;
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__asm
volatile
(
"rdtsc"
:
"=a"
(a),
"=d"
(d) );
// compiler-dependent
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return
((
unsigned
long
long
) a) | (((
unsigned
long
long
) d) << 32);
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}
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rdtsc
static __inline__ unsigned long long rdtsc(void)
Definition:
rdtsc.h:13
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