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30 lines
470 B
C++
30 lines
470 B
C++
#pragma once
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#include "util/types.hpp"
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#ifdef _M_X64
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#ifdef _MSC_VER
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extern "C" u64 __rdtsc();
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#else
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#include <immintrin.h>
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#endif
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#endif
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namespace utils
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{
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inline u64 get_tsc()
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{
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#if defined(ARCH_ARM64)
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u64 r = 0;
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__asm__ volatile("mrs %0, cntvct_el0" : "=r"(r));
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return r;
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#elif defined(_M_X64)
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return __rdtsc();
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#elif defined(ARCH_X64)
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return __builtin_ia32_rdtsc();
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#else
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#error "Missing utils::get_tsc() implementation"
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#endif
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}
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} // namespace utils
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