ISR-support in ARM

Philip Blundell pb@nexus.co.uk
Mon Oct 8 10:10:00 GMT 2001


> The clause in the comment:
>
>       Interrupt routines have their own banked link register,
>       so they never need to save it.
>
>sounds more than weird when the link-register is one of the registers to be
>used as workspace... Or is the 'lr' in the opcode :

Oh, I see.  Yes, I think you're right.  It looks like the person who wrote the 
comment (and the code) misunderstood how ARM banked registers work.

p.


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