genode/repos/os/include/arm_v6/trace/timestamp.h
Norman Feske ca971bbfd8 Move repositories to 'repos/' subdirectory
This patch changes the top-level directory layout as a preparatory
step for improving the tools for managing 3rd-party source codes.
The rationale is described in the issue referenced below.

Issue #1082
2014-05-14 16:08:00 +02:00

34 lines
666 B
C++

/*
* \brief Trace timestamp
* \author Stefan Kalkowski
* \date 2013-08-20
*
* Serialized reading of performance counter on ARM.
*/
/*
* Copyright (C) 2013 Genode Labs GmbH
*
* This file is part of the Genode OS framework, which is distributed
* under the terms of the GNU General Public License version 2.
*/
#ifndef _INCLUDE__TRACE_TIMESTAMP_H_
#define _INCLUDE__TRACE_TIMESTAMP_H_
#include <base/fixed_stdint.h>
namespace Genode { namespace Trace {
typedef uint32_t Timestamp;
inline Timestamp timestamp()
{
uint32_t t;
asm volatile("mrc p15, 0, %0, c15, c12, 1" : "=r"(t));
return t;
}
} }
#endif /* _INCLUDE__TRACE_TIMESTAMP_H_ */