UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

m68knommu: use one exist from execption 

Part of the code that did not make sense to me got removed by Greg.
This is part two:

The first compare is to check whether the interrupts are disabled or not.
Depending on the result we exectute the RESTORE_ALL macro is not only
restoring the stack but also returning to caller.
The test for pending softirq has been removed because it is allready done
in irq_exit().
Since system_call() is allso using the SAVE_ALL macro and returning via
ret_from_exception label I see no reason why we could not do this here
as well. This is also handy because if we return from the timer interrupt
and we need to resched than we check for this :)

Signed-off-by: Sebastian Siewior <bigeasy@linutronix.de>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
This commit is contained in:
Sebastian Siewior 2008-04-28 11:43:16 +02:00 committed by Greg Ungerer
parent 5ee8100721
commit c7bcd0df1f
1 changed files with 2 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
arch/m68knommu/platform/coldfire/entry.S
View File

@ -215,19 +215,8 @@ ENTRY(fasthandler)
RESTORE_LOCAL
ENTRY(ret_from_interrupt)
moveb %sp@(PT_SR),%d0
andl #0x7,%d0
jeq 1f
RESTORE_ALL
1:
/* check if we need to do software interrupts */
movel irq_stat+CPUSTAT_SOFTIRQ_PENDING,%d0
jeq ret_from_exception
pea ret_from_exception
jmp do_softirq
/* the fasthandler is confusing me, haven't seen any user */
jmp ret_from_exception
/*
* Beware - when entering resume, prev (the current task) is