forked from OSchip/llvm-project
34 lines
997 B
C++
34 lines
997 B
C++
//===-- 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
|