[uClinux-dev] about interrupts

From: Marcelo Götz (gotz@delet.ufrgs.br)
Date: Tue Jan 23 2001 - 10:57:07 EST

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Hi all,
	Does anyone know if the another interrupt (from  hardware) can
preempt a executing system_call?
	
	My question means that i am not using a cli() instruction, only if the
CPU disable other interrupts until the current has finished. This is
because i saw in the source code
(/arch/m68knommu/platform/68332/entry.S) this piece just after a
hardware interrupt:

"
...
SYMBOL_NAME_LABEL(inthandler)
	SAVE_ALL
	oriw #0x700,%sr
	....
	..
"


The intention is reenable the interrupts?
At the system_call header, this don't appears.


	I am working whit a 68332 architecture.

Thanks,

Marcelo Gotz

-------------------------------------------------
Federal University of Rio Grande do Sul - Brazil
www.ufrgs.br

Department:
www.delet.ufrgs.br

e-mail: gotz@delet.ufrgs.br
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