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corrected pseudo-code for _ISR_Handler

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This commit is contained in:
Joel Sherrill
1995-06-07 02:40:23 +00:00
parent 9526d2176e
commit 34d877ec46
2 changed files with 34 additions and 10 deletions
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22
c/src/exec/score/cpu/no_cpu/cpu_asm.c
View File

@@ -136,17 +136,29 @@ void _ISR_Handler()
*
* (*_ISR_Vector_table[ vector ])( vector );
*
* if ( --__ISR_Nest_level == 0 ) {
* if ( _Context_Switch_necessary || _ISR_Signals_to_thread_executing )
* call _Thread_Dispatch() or prepare to return to _ISR_Dispatch
* --_ISR_Nest_level;
*
* if ( _ISR_Nest_level )
* goto the label "exit interrupt (simple case)"
*
* #if ( CPU_HAS_SOFTWARE_INTERRUPT_STACK == TRUE )
* restore stack
* #endif
* }
*
* if ( !_Context_Switch_necessary )
* goto the label "exit interrupt (simple case)"
*
* if ( !_ISR_Signals_to_thread_executing )
* goto the label "exit interrupt (simple case)"
*
* call _Thread_Dispatch() or prepare to return to _ISR_Dispatch
*
* prepare to get out of interrupt
* return from interrupt
* return from interrupt (maybe to _ISR_Dispatch)
*
* LABEL "exit interrupt (simple case):
* prepare to get out of interrupt
* return from interrupt
*/
}

22
cpukit/score/cpu/no_cpu/cpu_asm.c
View File

@@ -136,17 +136,29 @@ void _ISR_Handler()
*
* (*_ISR_Vector_table[ vector ])( vector );
*
* if ( --__ISR_Nest_level == 0 ) {
* if ( _Context_Switch_necessary || _ISR_Signals_to_thread_executing )
* call _Thread_Dispatch() or prepare to return to _ISR_Dispatch
* --_ISR_Nest_level;
*
* if ( _ISR_Nest_level )
* goto the label "exit interrupt (simple case)"
*
* #if ( CPU_HAS_SOFTWARE_INTERRUPT_STACK == TRUE )
* restore stack
* #endif
* }
*
* if ( !_Context_Switch_necessary )
* goto the label "exit interrupt (simple case)"
*
* if ( !_ISR_Signals_to_thread_executing )
* goto the label "exit interrupt (simple case)"
*
* call _Thread_Dispatch() or prepare to return to _ISR_Dispatch
*
* prepare to get out of interrupt
* return from interrupt
* return from interrupt (maybe to _ISR_Dispatch)
*
* LABEL "exit interrupt (simple case):
* prepare to get out of interrupt
* return from interrupt
*/
}