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2003-02-11 Joel Sherrill <joel@OARcorp.com>

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* cpu_asm.c: Rework logic that decides when to call
	_Thread_Dispatch.  Analysis by Sergei Organov <osv@javad.ru>
	determined that _ISR_Signals_to_thread_executing was not being
	honored and/or cleared properly.
This commit is contained in:
Joel Sherrill
2003-02-11 23:43:36 +00:00
parent 4b83378280
commit 3ab9062756
4 changed files with 39 additions and 16 deletions
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7
cpukit/score/cpu/a29k/ChangeLog
View File

@@ -1,3 +1,10 @@
2003-02-11 Joel Sherrill <joel@OARcorp.com>
* cpu_asm.c: Rework logic that decides when to call
_Thread_Dispatch. Analysis by Sergei Organov <osv@javad.ru>
determined that _ISR_Signals_to_thread_executing was not being
honored and/or cleared properly.
2002-12-11 Ralf Corsepius <corsepiu@faw.uni-ulm.de>
* configure.ac: Require autoconf-2.57 + automake-1.7.2.

17
cpukit/score/cpu/a29k/cpu.c
View File

@@ -270,8 +270,17 @@ void a29k_ISR_Handler(unsigned32 vector)
(*_ISR_Vector_table[ vector ])( vector );
--_Thread_Dispatch_disable_level;
--_ISR_Nest_level;
if ( !_Thread_Dispatch_disable_level && !_ISR_Nest_level &&
(_Context_Switch_necessary || _ISR_Signals_to_thread_executing ))
_Thread_Dispatch();
return;
if ( _ISR_Nest_level )
return;
if ( _Thread_Dispatch_disable_level ) {
_ISR_Signals_to_thread_executing = FALSE;
return;
}
if ( _Context_Switch_necessary || _ISR_Signals_to_thread_executing ) {
_ISR_Signals_to_thread_executing = FALSE;
_Thread_Dispatch();
}
}

7
cpukit/score/cpu/no_cpu/ChangeLog
View File

@@ -1,3 +1,10 @@
2003-02-11 Joel Sherrill <joel@OARcorp.com>
* cpu_asm.c: Rework logic that decides when to call
_Thread_Dispatch. Analysis by Sergei Organov <osv@javad.ru>
determined that _ISR_Signals_to_thread_executing was not being
honored and/or cleared properly.
2002-12-11 Ralf Corsepius <corsepiu@faw.uni-ulm.de>
* configure.ac: Require autoconf-2.57 + automake-1.7.2.

24
cpukit/score/cpu/no_cpu/cpu_asm.c
View File

@@ -154,28 +154,28 @@ void _ISR_Handler()
*
* (*_ISR_Vector_table[ vector ])( vector );
*
* _Thread_Dispatch_disable_level--;
*
* --_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 )
* if ( _Thread_Dispatch_disable_level )
* _ISR_Signals_to_thread_executing = FALSE;
* 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 (maybe to _ISR_Dispatch)
* if ( _Context_Switch_necessary || _ISR_Signals_to_thread_executing ) {
* _ISR_Signals_to_thread_executing = FALSE;
* call _Thread_Dispatch() or prepare to return to _ISR_Dispatch
* prepare to get out of interrupt
* return from interrupt (maybe to _ISR_Dispatch)
*
* LABEL "exit interrupt (simple case):
* #if ( CPU_HAS_SOFTWARE_INTERRUPT_STACK == TRUE )
* if outermost interrupt
* restore stack
* #endif
* prepare to get out of interrupt
* return from interrupt
*/