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Changed: Use __rdtsc() intrinsics everywhere for Intel CPUs

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This commit is contained in:
kervala 2016-01-04 15:35:02 +01:00
parent b0da68f0d6
commit acb0a5303a
1 changed files with 6 additions and 14 deletions
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20
code/nel/include/nel/misc/common.h
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@ -38,6 +38,10 @@
# include <sys/types.h> # include <sys/types.h>
#endif #endif
#if defined(NL_CPU_INTEL) && defined(NL_COMP_GCC)
#include "x86intrin.h"
#endif
#include "string_common.h" #include "string_common.h"
#ifdef NL_OS_WINDOWS #ifdef NL_OS_WINDOWS
@ -65,20 +69,8 @@ namespace NLMISC
inline uint64 rdtsc() inline uint64 rdtsc()
{ {
uint64 ticks; // __rdtsc() is defined under all platforms
# ifdef NL_OS_WINDOWS return uint64(__rdtsc());
# 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;
} }
#endif // NL_CPU_INTEL #endif // NL_CPU_INTEL