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Re: [avr-gcc-list] When does the Stack Frame Pointer (Y) get setup?
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From: |
Bob Paddock |
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Subject: |
Re: [avr-gcc-list] When does the Stack Frame Pointer (Y) get setup? |
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Date: |
Fri, 6 Jul 2012 13:00:07 -0400 |
On Fri, Jul 6, 2012 at 12:45 PM, Larry Barello wrote:
> I believe xmega automatical disable interrupts for one cycle after anything
> that touches the stack and or int priority registers (it has been a few
> years so I might have some details wrong).
Thank you.
That would be this in the XMega Manual:
To prevent corruption when updating the Stack Pointer from software, a
write to SPL will auto-
matically disable interrupts for up to 4 instructions or until the
next I/O memory write.
Re: [avr-gcc-list] When does the Stack Frame Pointer (Y) get setup?, Joerg Wunsch, 2012/07/04
Re: [avr-gcc-list] When does the Stack Frame Pointer (Y) get setup?, Joerg Wunsch, 2012/07/04
Re: [avr-gcc-list] When does the Stack Frame Pointer (Y) get setup?, Georg-Johann Lay, 2012/07/04