34 lines
666 B
C++
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_ */
|