forked from OSchip/llvm-project
35 lines
969 B
C++
35 lines
969 B
C++
//===-- xray_x86_64.inc -----------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file is a part of XRay, a dynamic runtime instrumentation system.
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//
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//===----------------------------------------------------------------------===//
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#include <cstdint>
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#include <x86intrin.h>
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#include "sanitizer_common/sanitizer_internal_defs.h"
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#include "xray_defs.h"
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namespace __xray {
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ALWAYS_INLINE uint64_t readTSC(uint8_t &CPU) XRAY_NEVER_INSTRUMENT {
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unsigned LongCPU;
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unsigned long Rax, Rdx;
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__asm__ __volatile__("rdtscp\n" : "=a"(Rax), "=d"(Rdx), "=c"(LongCPU) ::);
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CPU = LongCPU;
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return (Rdx << 32) + Rax;
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}
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uint64_t getTSCFrequency();
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bool probeRequiredCPUFeatures();
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} // namespace __xray
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