blob: b3c475f9110c2df0ce7dc74f7fecda518e6eff55 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
//===-- xray_x86_64.inc -----------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// 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
|
