[PATCH v4 01/14] eal: use rdtsc intrinsic

[Konstantin Ananyev]

> Inline assembly is not supported for MSVC x64. Convert code to use
> __rdtsc intrinsic.
> 
> Signed-off-by: Tyler Retzlaff <roretzla at linux.microsoft.com>
> ---
>  lib/eal/x86/include/rte_cycles.h | 14 ++++++++------
>  1 file changed, 8 insertions(+), 6 deletions(-)
> 
> diff --git a/lib/eal/x86/include/rte_cycles.h b/lib/eal/x86/include/rte_cycles.h
> index a461a4d..cca5122 100644
> --- a/lib/eal/x86/include/rte_cycles.h
> +++ b/lib/eal/x86/include/rte_cycles.h
> @@ -6,6 +6,12 @@
>  #ifndef _RTE_CYCLES_X86_64_H_
>  #define _RTE_CYCLES_X86_64_H_
> 
> +#ifndef RTE_TOOLCHAIN_MSVC
> +#include <x86intrin.h>
> +#else
> +#include <intrin.h>
> +#endif
> +
>  #ifdef __cplusplus
>  extern "C" {
>  #endif
> @@ -23,6 +29,7 @@
>  static inline uint64_t
>  rte_rdtsc(void)
>  {
> +#ifdef RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT
>  	union {
>  		uint64_t tsc_64;
>  		RTE_STD_C11
> @@ -32,7 +39,6 @@
>  		};
>  	} tsc;
> 
> -#ifdef RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT
>  	if (unlikely(rte_cycles_vmware_tsc_map)) {
>  		/* ecx = 0x10000 corresponds to the physical TSC for VMware */
>  		asm volatile("rdpmc" :
> @@ -42,11 +48,7 @@
>  		return tsc.tsc_64;
>  	}
>  #endif
> -
> -	asm volatile("rdtsc" :
> -		     "=a" (tsc.lo_32),
> -		     "=d" (tsc.hi_32));
> -	return tsc.tsc_64;
> +	return __rdtsc();
>  }
> 
>  static inline uint64_t
> --

Acked-by: Konstantin Ananyev <konstantin.ananyev at huawei.com>
 

> 1.8.3.1