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34 lines
704 B
C++
34 lines
704 B
C++
/*
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* \brief Trace timestamp
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* \author Stefan Kalkowski
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* \author Sebastian Sumpf
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* \date 2019-03-25
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*/
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/*
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* Copyright (C) 2019 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU Affero General Public License version 3.
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*/
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#ifndef _INCLUDE__SPEC__ARM_64__TRACE__TIMESTAMP_H_
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#define _INCLUDE__SPEC__ARM_64__TRACE__TIMESTAMP_H_
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#include <base/fixed_stdint.h>
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namespace Genode { namespace Trace {
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using Timestamp = uint64_t;
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inline Timestamp timestamp()
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{
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uint64_t t;
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/* cycle counter */
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asm volatile("mrs %0, pmccntr_el0" : "=r" (t));
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return t;
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}
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} }
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#endif /* _INCLUDE__SPEC__ARM_64__TRACE__TIMESTAMP_H_ */
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