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| //===-- xray_x86_64.inc -----------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file is a part of XRay, a dynamic runtime instrumentation system.
//
//===----------------------------------------------------------------------===//
#include <cstdint>
#include <x86intrin.h>
#include "sanitizer_common/sanitizer_internal_defs.h"
#include "xray_defs.h"
namespace __xray {
ALWAYS_INLINE uint64_t readTSC(uint8_t &CPU) XRAY_NEVER_INSTRUMENT {
unsigned LongCPU;
unsigned long Rax, Rdx;
__asm__ __volatile__("rdtscp\n" : "=a"(Rax), "=d"(Rdx), "=c"(LongCPU) ::);
CPU = LongCPU;
return (Rdx << 32) + Rax;
}
uint64_t getTSCFrequency();
bool probeRequiredCPUFeatures();
} // namespace __xray
|