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KWSys 2020-04-21 (44086372)

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Code extracted from:

    https://gitlab.kitware.com/utils/kwsys.git

at commit 4408637212fe1ddf09425beba97e105009734e31 (master).

Upstream Shortlog
-----------------

Hernan Martinez (1):
      00629420 SystemInformation: Add support for Windows on ARM64
This commit is contained in:
KWSys Upstream
2020-04-21 07:05:16 -04:00
committed by Brad King
parent 363ec4f585
commit e833e660ef
1 changed files with 8 additions and 1 deletions
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9
SystemInformation.cxx
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@@ -204,7 +204,8 @@ typedef struct rlimit ResourceLimitType;
# define USE_ASM_INSTRUCTIONS 0 # define USE_ASM_INSTRUCTIONS 0
#endif #endif
#if defined(_MSC_VER) && (_MSC_VER >= 1400) && !defined(__clang__) #if defined(_MSC_VER) && (_MSC_VER >= 1400) && !defined(__clang__) && \
!defined(_M_ARM64)
# include <intrin.h> # include <intrin.h>
# define USE_CPUID_INTRINSICS 1 # define USE_CPUID_INTRINSICS 1
#else #else
@@ -4322,9 +4323,15 @@ SystemInformationImplementation::GetCyclesDifference(DELAY_FUNC DelayFunction,
#if defined(_MSC_VER) && (_MSC_VER >= 1400) #if defined(_MSC_VER) && (_MSC_VER >= 1400)
unsigned __int64 stamp1, stamp2; unsigned __int64 stamp1, stamp2;
# ifdef _M_ARM64
stamp1 = _ReadStatusReg(ARM64_PMCCNTR_EL0);
DelayFunction(uiParameter);
stamp2 = _ReadStatusReg(ARM64_PMCCNTR_EL0);
# else
stamp1 = __rdtsc(); stamp1 = __rdtsc();
DelayFunction(uiParameter); DelayFunction(uiParameter);
stamp2 = __rdtsc(); stamp2 = __rdtsc();
# endif
return stamp2 - stamp1; return stamp2 - stamp1;
#elif USE_ASM_INSTRUCTIONS #elif USE_ASM_INSTRUCTIONS