Changed: Use __rdtsc() intrinsics everywhere for Intel CPUs

This commit is contained in:
kervala 2016-01-04 15:35:02 +01:00
parent b0da68f0d6
commit acb0a5303a

View file

@ -38,6 +38,10 @@
# include <sys/types.h>
#endif
#if defined(NL_CPU_INTEL) && defined(NL_COMP_GCC)
#include "x86intrin.h"
#endif
#include "string_common.h"
#ifdef NL_OS_WINDOWS
@ -65,20 +69,8 @@ namespace NLMISC
inline uint64 rdtsc()
{
uint64 ticks;
# ifdef NL_OS_WINDOWS
# ifdef NL_NO_ASM
ticks = uint64(__rdtsc());
# else
// We should use the intrinsic code now. ticks = uint64(__rdtsc());
__asm rdtsc
__asm mov DWORD PTR [ticks], eax
__asm mov DWORD PTR [ticks + 4], edx
# endif // NL_NO_ASM
# else
__asm__ volatile(".byte 0x0f, 0x31" : "=a" (ticks.low), "=d" (ticks.high));
# endif // NL_OS_WINDOWS
return ticks;
// __rdtsc() is defined under all platforms
return uint64(__rdtsc());
}
#endif // NL_CPU_INTEL