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* [Bug 1000660] ARM HAL breaks on spurious interrupt
[not found] <bug-1000660-776@http.bugs.ecos.sourceware.org/>
@ 2011-02-23 15:39 ` bugzilla-daemon
0 siblings, 0 replies; 2+ messages in thread
From: bugzilla-daemon @ 2011-02-23 15:39 UTC (permalink / raw)
To: backlog
Please do not reply to this email. Use the web interface provided at:
http://bugs.ecos.sourceware.org/show_bug.cgi?id=1000660
Morten Lave <ml@tctechnologies.tc> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ml@tctechnologies.tc
--- Comment #4 from Morten Lave <ml@tctechnologies.tc> 2011-02-23 15:39:22 GMT ---
I have seen the same problem and it is in both eCos 2.x and 3.0. We have
created a fix which has worked well for 2.x and this as far as i can see works
for 3.0 as well. The fix seems to be along the same lines as what has allegedly
been done in eCosPro.
We have replaced:
// The return value from the handler (in r0) will indicate whether a
// DSR is to be posted. Pass this together with a pointer to the
// interrupt object we have just used to the interrupt tidy up routine.
// don't run this for spurious interrupts!
cmp v1,#CYGNUM_HAL_INTERRUPT_NONE
beq 17f
ldr r1,.hal_interrupt_objects
With
// The return value from the handler (in r0) will indicate whether a
// DSR is to be posted. Pass this together with a pointer to the
// interrupt object we have just used to the interrupt tidy up routine.
// don't run this for spurious interrupts!
cmp v1,#CYGNUM_HAL_INTERRUPT_NONE
//ML23-02-2011, even spurious interrupts must unlock scheduler
moveq r0,#0
ldr r1,.hal_interrupt_objects
This will make sure that interrupt_end is called even for a spurious interrupt
but no DSR is posted as r0 is zero and therefore the vector is ignored.
This fix replaces a conditional branch with a conditional move so it would not
add any latency to regular interrupt processing.
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^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug 1000660] ARM HAL breaks on spurious interrupt
2008-12-11 22:19 [Bug 1000660] New: " bugzilla-daemon
@ 2011-02-23 15:39 ` bugzilla-daemon
0 siblings, 0 replies; 2+ messages in thread
From: bugzilla-daemon @ 2011-02-23 15:39 UTC (permalink / raw)
To: ecos-bugs
Please do not reply to this email. Use the web interface provided at:
http://bugs.ecos.sourceware.org/show_bug.cgi?id=1000660
Morten Lave <ml@tctechnologies.tc> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ml@tctechnologies.tc
--- Comment #4 from Morten Lave <ml@tctechnologies.tc> 2011-02-23 15:39:22 GMT ---
I have seen the same problem and it is in both eCos 2.x and 3.0. We have
created a fix which has worked well for 2.x and this as far as i can see works
for 3.0 as well. The fix seems to be along the same lines as what has allegedly
been done in eCosPro.
We have replaced:
// The return value from the handler (in r0) will indicate whether a
// DSR is to be posted. Pass this together with a pointer to the
// interrupt object we have just used to the interrupt tidy up routine.
// don't run this for spurious interrupts!
cmp v1,#CYGNUM_HAL_INTERRUPT_NONE
beq 17f
ldr r1,.hal_interrupt_objects
With
// The return value from the handler (in r0) will indicate whether a
// DSR is to be posted. Pass this together with a pointer to the
// interrupt object we have just used to the interrupt tidy up routine.
// don't run this for spurious interrupts!
cmp v1,#CYGNUM_HAL_INTERRUPT_NONE
//ML23-02-2011, even spurious interrupts must unlock scheduler
moveq r0,#0
ldr r1,.hal_interrupt_objects
This will make sure that interrupt_end is called even for a spurious interrupt
but no DSR is posted as r0 is zero and therefore the vector is ignored.
This fix replaces a conditional branch with a conditional move so it would not
add any latency to regular interrupt processing.
--
Configure bugmail: http://bugs.ecos.sourceware.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2011-02-23 15:39 ` [Bug 1000660] ARM HAL breaks on spurious interrupt bugzilla-daemon
2008-12-11 22:19 [Bug 1000660] New: " bugzilla-daemon
2011-02-23 15:39 ` [Bug 1000660] " bugzilla-daemon
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