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35 lines
900 B
C
35 lines
900 B
C
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/*
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* \brief Trace timestamp
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* \author Norman Feske
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* \date 2021-05-01
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*/
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/*
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* Copyright (C) 2021 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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typedef uint64_t Timestamp;
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/*
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* In Linux/AARCH64, the 'mrs' instruction cannot be executed in user land.
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* It triggers the abort of the program with an illegal-instruction
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* exception.
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*
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* By returning 0, we discharge the timestamp-based interpolation of
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* 'Timer::Connection::curr_time', falling back to a precision of 1 ms.
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*/
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inline Timestamp timestamp() { return 0; }
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} }
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#endif /* _INCLUDE__SPEC__ARM_64__TRACE__TIMESTAMP_H_ */
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