genode/repos/os/include/spec/arm_v7/trace/timestamp.h
Stefan Kalkowski ed52d5a211 Introduce 'spec' subdirectories to outline aspects
Instead of holding SPEC-variable dependent files and directories inline
within the repository structure, move them into 'spec' subdirectories
at the corresponding levels, e.g.:

  repos/base/include/spec
  repos/base/mk/spec
  repos/base/lib/mk/spec
  repos/base/src/core/spec
  ...

Moreover, this commit removes the 'platform' directories. That term was
used in an overloaded sense. All SPEC-relative 'platform' directories are
now named 'spec'. Other files, like for instance those related to the
kernel/architecture specific startup library, where moved from 'platform'
directories to explicit, more meaningful places like e.g.: 'src/lib/startup'.

Fix #1673
2015-09-16 13:58:50 +02:00

34 lines
710 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__SPEC__ARM_V7__TRACE__TIMESTAMP_H_
#define _INCLUDE__SPEC__ARM_V7__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, c9, c13, 0" : "=r"(t));
return t;
}
} }
#endif /* _INCLUDE__SPEC__ARM_V7__TRACE__TIMESTAMP_H_ */