forked from Imagelibrary/rtems
94 lines
2.6 KiB
C
94 lines
2.6 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
|
|
|
|
/*
|
|
* Support for SuperH Simulator in GDB
|
|
*/
|
|
|
|
/*
|
|
* COPYRIGHT (c) 1989-2008.
|
|
* 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.
|
|
*/
|
|
|
|
#include <rtems/score/cpu.h>
|
|
#include <rtems/score/isr.h>
|
|
#include <rtems/score/percpu.h>
|
|
#include <rtems/score/threaddispatch.h>
|
|
#include <rtems/score/sh.h>
|
|
|
|
unsigned long *_old_stack_ptr;
|
|
|
|
register unsigned long *stack_ptr __asm__ ("r15");
|
|
|
|
void __ISR_Handler(uint32_t vector);
|
|
|
|
/*
|
|
* This routine provides the RTEMS interrupt management.
|
|
*/
|
|
void __ISR_Handler( uint32_t vector)
|
|
{
|
|
ISR_Level level;
|
|
|
|
_ISR_Local_disable( level );
|
|
|
|
_Thread_Dispatch_disable();
|
|
|
|
if ( _ISR_Nest_level == 0 )
|
|
{
|
|
/* Install irq stack */
|
|
_old_stack_ptr = stack_ptr;
|
|
stack_ptr = _CPU_Interrupt_stack_high;
|
|
}
|
|
|
|
_ISR_Nest_level++;
|
|
|
|
_ISR_Local_enable( level );
|
|
|
|
/* call isp */
|
|
if ( _ISR_Vector_table[ vector])
|
|
(*_ISR_Vector_table[ vector ])( vector );
|
|
|
|
_ISR_Local_disable( level );
|
|
|
|
_Thread_Dispatch_unnest( _Per_CPU_Get() );
|
|
|
|
_ISR_Nest_level--;
|
|
|
|
if ( _ISR_Nest_level == 0 )
|
|
/* restore old stack pointer */
|
|
stack_ptr = _old_stack_ptr;
|
|
|
|
_ISR_Local_enable( level );
|
|
|
|
if ( _ISR_Nest_level )
|
|
return;
|
|
|
|
if ( !_Thread_Dispatch_is_enabled() ) {
|
|
return;
|
|
}
|
|
|
|
if ( _Thread_Dispatch_necessary ) {
|
|
_Thread_Dispatch();
|
|
}
|
|
}
|