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