forked from Imagelibrary/rtems
75 lines
1.4 KiB
C
75 lines
1.4 KiB
C
/*
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* Support for SuperH Simulator in GDB
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*/
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/*
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* COPYRIGHT (c) 1989-2008.
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* On-Line Applications Research Corporation (OAR).
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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#include <rtems/score/cpu.h>
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#include <rtems/score/isr.h>
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#include <rtems/score/percpu.h>
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#include <rtems/score/threaddispatch.h>
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#include <rtems/score/sh.h>
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unsigned long *_old_stack_ptr;
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register unsigned long *stack_ptr __asm__ ("r15");
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void __ISR_Handler(uint32_t vector);
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/*
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* This routine provides the RTEMS interrupt management.
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*/
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void __ISR_Handler( uint32_t vector)
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{
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ISR_Level level;
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_ISR_Local_disable( level );
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_Thread_Dispatch_disable();
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if ( _ISR_Nest_level == 0 )
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{
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/* Install irq stack */
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_old_stack_ptr = stack_ptr;
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stack_ptr = _CPU_Interrupt_stack_high;
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}
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_ISR_Nest_level++;
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_ISR_Local_enable( level );
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/* call isp */
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if ( _ISR_Vector_table[ vector])
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(*_ISR_Vector_table[ vector ])( vector );
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_ISR_Local_disable( level );
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_Thread_Dispatch_unnest( _Per_CPU_Get() );
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_ISR_Nest_level--;
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if ( _ISR_Nest_level == 0 )
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/* restore old stack pointer */
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stack_ptr = _old_stack_ptr;
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_ISR_Local_enable( level );
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if ( _ISR_Nest_level )
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return;
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if ( !_Thread_Dispatch_is_enabled() ) {
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return;
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}
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if ( _Thread_Dispatch_necessary ) {
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_Thread_Dispatch();
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}
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}
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