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/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup RTEMSBSPsSPARC
*
* @brief This header file provides interfaces of the
* _SPARC_Counter and _SPARC_Counter_mutable global variables.
*/
/*
* Copyright (c) 2016, 2018 embedded brains GmbH. All rights reserved.
*
* 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.
*/
#ifndef _RTEMS_SCORE_SPARCIMPL_H
#define _RTEMS_SCORE_SPARCIMPL_H
#include <rtems/score/cpu.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
struct timecounter;
/*
* Provides a mutable alias to _SPARC_Counter for use in
* _SPARC_Counter_initialize(). The _SPARC_Counter and _SPARC_Counter_mutable
* are defined via the SPARC_COUNTER_DEFINITION define.
*/
extern SPARC_Counter _SPARC_Counter_mutable;
void _SPARC_Counter_at_tick_clock( void );
CPU_Counter_ticks _SPARC_Counter_read_default( void );
CPU_Counter_ticks _SPARC_Counter_read_up( void );
CPU_Counter_ticks _SPARC_Counter_read_down( void );
CPU_Counter_ticks _SPARC_Counter_read_clock_isr_disabled( void );
CPU_Counter_ticks _SPARC_Counter_read_clock( void );
CPU_Counter_ticks _SPARC_Counter_read_asr23( void );
uint32_t _SPARC_Get_timecount_up( struct timecounter * );
uint32_t _SPARC_Get_timecount_down( struct timecounter * );
uint32_t _SPARC_Get_timecount_clock( struct timecounter * );
uint32_t _SPARC_Get_timecount_asr23( struct timecounter * );
/*
* Defines the _SPARC_Counter and _SPARC_Counter_mutable global variables.
* Place this define in the global file scope of the CPU counter support file
* of the BSP.
*/
#define SPARC_COUNTER_DEFINITION \
__asm__ ( \
"\t.global\t_SPARC_Counter\n" \
"\t.global\t_SPARC_Counter_mutable\n" \
"\t.section\t.data._SPARC_Counter,\"aw\",@progbits\n" \
"\t.align\t4\n" \
"\t.type\t_SPARC_Counter, #object\n" \
"\t.size\t_SPARC_Counter, 28\n" \
"_SPARC_Counter:\n" \
"_SPARC_Counter_mutable:\n" \
"\t.long\t_SPARC_Counter_read_default\n" \
"\t.long\t_SPARC_Counter_read_default\n" \
"\t.long\t0\n" \
"\t.long\t0\n" \
"\t.long\t0\n" \
"\t.long\t0\n" \
"\t.long\t0\n" \
"\t.previous\n" \
)
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* _RTEMS_SCORE_SPARCIMPL_H */
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