| 1 | //===-- xray_x86_64.inc -----------------------------------------*- C++ -*-===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | // This file is a part of XRay, a dynamic runtime instrumentation system. |
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| 10 | // |
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| 11 | //===----------------------------------------------------------------------===// |
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| 12 | |
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| 13 | #include <cstdint> |
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| 14 | |
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| 15 | #include "sanitizer_common/sanitizer_internal_defs.h" |
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| 16 | #include "xray_defs.h" |
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| 17 | |
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| 18 | namespace __xray { |
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| 19 | |
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| 20 | ALWAYS_INLINE uint64_t readTSC(uint8_t &CPU) XRAY_NEVER_INSTRUMENT { |
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| 21 | unsigned LongCPU; |
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| 22 | unsigned long Rax, Rdx; |
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| 23 | __asm__ __volatile__("rdtscp\n" : "=a" (Rax), "=d" (Rdx), "=c" (LongCPU) ::); |
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| 24 | CPU = LongCPU; |
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| 25 | return (Rdx << 32) + Rax; |
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| 26 | } |
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| 27 | |
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| 28 | uint64_t getTSCFrequency(); |
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| 29 | |
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| 30 | bool probeRequiredCPUFeatures(); |
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| 31 | |
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| 32 | } // namespace __xray |
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| 33 | |
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