mirror of
https://gitlab.rtems.org/rtems/rtos/rtems.git
synced 2025-12-26 06:08:20 +00:00
97 lines
2.6 KiB
Ada
97 lines
2.6 KiB
Ada
-- SPDX-License-Identifier: BSD-2-Clause
|
|
|
|
--
|
|
-- Timer_Driver / Specification
|
|
--
|
|
-- Description:
|
|
--
|
|
-- This package is the specification for the Timer Driver.
|
|
--
|
|
-- Dependencies:
|
|
--
|
|
--
|
|
--
|
|
-- COPYRIGHT (c) 1989-1997.
|
|
-- On-Line Applications Research Corporation (OAR).
|
|
--
|
|
-- Redistribution and use in source and binary forms, with or without
|
|
-- modification, are permitted provided that the following conditions
|
|
-- are met:
|
|
-- 1. Redistributions of source code must retain the above copyright
|
|
-- notice, this list of conditions and the following disclaimer.
|
|
-- 2. Redistributions in binary form must reproduce the above copyright
|
|
-- notice, this list of conditions and the following disclaimer in the
|
|
-- documentation and/or other materials provided with the distribution.
|
|
--
|
|
-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
-- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
-- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
-- ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
-- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
-- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
-- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
-- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
-- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
-- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
-- POSSIBILITY OF SUCH DAMAGE.
|
|
--
|
|
|
|
with RTEMS;
|
|
|
|
package Timer_Driver is
|
|
|
|
--
|
|
-- Initialize
|
|
--
|
|
-- Description:
|
|
--
|
|
-- This subprogram initializes the hardware timer to start it.
|
|
--
|
|
|
|
procedure Initialize;
|
|
pragma Import (C, Initialize, "benchmark_timer_initialize");
|
|
|
|
--
|
|
-- Read_Timer
|
|
--
|
|
-- Description:
|
|
--
|
|
-- This subprogram stops the timer, calculates the length of time
|
|
-- in microseconds since the timer was started, and returns that
|
|
-- value.
|
|
--
|
|
|
|
function Read_Timer
|
|
return RTEMS.Unsigned32;
|
|
pragma Import (C, Read_Timer, "benchmark_timer_read");
|
|
|
|
--
|
|
-- Empty_Function
|
|
--
|
|
-- Description:
|
|
--
|
|
-- This subprogram is an empty subprogram. It is used to
|
|
-- insure that a loop will be included in the final executable
|
|
-- so that loop overhead can be subtracted from the directive
|
|
-- times reported.
|
|
--
|
|
|
|
procedure Empty_Function;
|
|
|
|
--
|
|
-- Set_Find_Average_Overhead
|
|
--
|
|
-- Description:
|
|
--
|
|
-- This subprogram sets the Find_Average_Overhead flag to the
|
|
-- the value passed.
|
|
--
|
|
|
|
procedure Set_Find_Average_Overhead (
|
|
Find_Flag : in Standard.Boolean
|
|
);
|
|
|
|
private
|
|
|
|
end Timer_Driver;
|