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Since the timer and timeout handling is part of the base library (the dynamic linker), it belongs to the base repository. Besides moving the timer and its related infrastructure (alarm, timeout libs, tests) to the base repository, this patch also moves the timer from the 'drivers' subdirectory directly to 'src' and disamibuates the timer's build locations for the various kernels. Otherwise the different timer implementations could interfere with each other when using one build directory with multiple kernels. Note that this patch changes the include paths for the former os/timer, os/alarm.h, os/duration.h, and os/timed_semaphore.h to base/. Issue #3101
34 lines
722 B
C++
34 lines
722 B
C++
/*
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* \brief Trace timestamp
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* \author Stefan Kalkowski
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* \date 2013-08-20
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*
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* Serialized reading of performance counter on ARM.
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*/
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/*
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* Copyright (C) 2013-2017 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_V7__TRACE__TIMESTAMP_H_
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#define _INCLUDE__SPEC__ARM_V7__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 uint32_t Timestamp;
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inline Timestamp timestamp()
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{
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uint32_t t;
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asm volatile("mrc p15, 0, %0, c9, c13, 0" : "=r"(t));
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return t;
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}
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} }
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#endif /* _INCLUDE__SPEC__ARM_V7__TRACE__TIMESTAMP_H_ */
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