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-exception 6// 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 __xray 33