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???
04/22/11 07:19
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 		 #181971 - A question if registers needs to be saved
Responding to: ???'s previous message
Erik Malund said:
I'll reread when I get back from Easter vacation.
the way I read it the tail chaining only applied when an interrupt interrupted an interrupt.

Erik

I don't think that can happen - if an interrupt interrupts an interrupt, then you need to save registers to be able to pop back to the original interrupt again. But when an interrupt is ending, the processor is free to reuse the registers for a new interrupt handler instead of restoring the original registers to return to the main loop.


List of 32 messages in thread
TopicAuthorDate
[ARM] Any good introduction to ARM assembler?            01/01/70 00:00      
   Every experimenters moving to ARM??            01/01/70 00:00      
      Large span of capabilities with same tools etc            01/01/70 00:00      
         Cheaper?            01/01/70 00:00      
            Depends on how to compare            01/01/70 00:00      
               How very true            01/01/70 00:00      
               a caveat            01/01/70 00:00      
                  Picking the right tool for the job.            01/01/70 00:00      
                     sometimes you are not the picker            01/01/70 00:00      
                        Cortex NVIC behavior.            01/01/70 00:00      
                           the way I read it            01/01/70 00:00      
                              A question if registers needs to be saved            01/01/70 00:00      
                              Possible cases:            01/01/70 00:00      
         luckly            01/01/70 00:00      
            Lucky??            01/01/70 00:00      
      don't know about experimenters, but ...            01/01/70 00:00      
         Easier to jump between many architectures now            01/01/70 00:00      
   Have you tried...            01/01/70 00:00      
      Is this a way to say "no"? ;-)            01/01/70 00:00      
         In the absence of a recommendation...            01/01/70 00:00      
   ARM assembly is fairly "plain" ...            01/01/70 00:00      
      RealView            01/01/70 00:00      
      shorter, better...            01/01/70 00:00      
         Just dive right in.            01/01/70 00:00      
            Not trivial either            01/01/70 00:00      
               Valid points, but ...            01/01/70 00:00      
            none, then?            01/01/70 00:00      
   related thread on LPC2000 yahoo group            01/01/70 00:00      
   Erik found something            01/01/70 00:00      
   Re: [ARM] Any good introduction to ARM assembler?            01/01/70 00:00      
   Check this link            01/01/70 00:00      
      Why? How is it relevant?            01/01/70 00:00      

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