8//===----------------------------------------------------------------------===//
9//
10// This file is a part of XRay, a dynamic runtime instrumentation system.
11//
12//===----------------------------------------------------------------------===//
13
14#include <cstdint>
15#include <x86intrin.h>
16
17#include "sanitizer_common/sanitizer_internal_defs.h"
18#include "xray_defs.h"
19
20namespace __xray {
21
22ALWAYS_INLINE uint64_t readTSC(uint8_t &CPU) XRAY_NEVER_INSTRUMENT {
23 unsigned LongCPU;
24 unsigned long Rax, Rdx;
25 __asm__ __volatile__("rdtscp\n" : "=a"(Rax), "=d"(Rdx), "=c"(LongCPU) ::);
26 CPU = LongCPU;
27 return (Rdx << 32) + Rax;
28}
29
30uint64_t getTSCFrequency();
31
32bool probeRequiredCPUFeatures();
33
34} // namespace __xray
| 7//===----------------------------------------------------------------------===//
8//
9// This file is a part of XRay, a dynamic runtime instrumentation system.
10//
11//===----------------------------------------------------------------------===//
12
13#include <cstdint>
14#include <x86intrin.h>
15
16#include "sanitizer_common/sanitizer_internal_defs.h"
17#include "xray_defs.h"
18
19namespace __xray {
20
21ALWAYS_INLINE uint64_t readTSC(uint8_t &CPU) XRAY_NEVER_INSTRUMENT {
22 unsigned LongCPU;
23 unsigned long Rax, Rdx;
24 __asm__ __volatile__("rdtscp\n" : "=a"(Rax), "=d"(Rdx), "=c"(LongCPU) ::);
25 CPU = LongCPU;
26 return (Rdx << 32) + Rax;
27}
28
29uint64_t getTSCFrequency();
30
31bool probeRequiredCPUFeatures();
32
33} // namespace __xray
|