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1//===-- xray_x86_64.inc -----------------------------------------*- C++ -*-===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8//9// This file is a part of XRay, a dynamic runtime instrumentation system.10//11//===----------------------------------------------------------------------===//12 13#include <cstdint>14 15#include "sanitizer_common/sanitizer_internal_defs.h"16#include "xray_defs.h"17 18namespace __xray {19 20ALWAYS_INLINE uint64_t readTSC(uint8_t &CPU) XRAY_NEVER_INSTRUMENT {21 unsigned LongCPU;22 unsigned long Rax, Rdx;23 __asm__ __volatile__("rdtscp\n" : "=a"(Rax), "=d"(Rdx), "=c"(LongCPU) ::);24 CPU = LongCPU;25 return (Rdx << 32) + Rax;26}27 28uint64_t getTSCFrequency();29 30bool probeRequiredCPUFeatures();31 32} // namespace __xray33