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RE: [avr-libc-dev] [RFC] Sleeping BOD API
From: |
Weddington, Eric |
Subject: |
RE: [avr-libc-dev] [RFC] Sleeping BOD API |
Date: |
Fri, 6 Feb 2009 16:39:21 -0700 |
> -----Original Message-----
> From:
> address@hidden
> [mailto:address@hidden
> org] On Behalf Of Joerg Wunsch
> Sent: Friday, February 06, 2009 4:22 PM
> To: address@hidden
> Subject: Re: [avr-libc-dev] [RFC] Sleeping BOD API
>
> If you feel your version is safe, go ahead, but I've
> got the impression you weren't so confident about its safety, so that
> that triggered your question in the first place.
Well I was hoping that someone (perhaps Anatoly, or Denis or Marek [if they
ever read this list anymore]) would know if GCC knows about the "liveness" of
MCUCR in the register, since it chose the instruction in between the two
__asm__ statements, i.e. I want to make sure that with the macro, gcc won't do
something weird like:
in r24,85-32
/* #APP */
; 61 "test.c" 1
ori r24,96
; 0 "" 2
/* #NOAPP */
out 85-32,r24
/* #APP */
; 61 "test.c" 1
andi r25,-33
; 0 "" 2
/* #NOAPP */
out 85-32,r25
where it chooses a different register for the second __asm__ statement and that
different register has basically invalid data.
Eric
- RE: [avr-libc-dev] [RFC] Sleeping BOD API, (continued)
- Message not available
- RE: [avr-libc-dev] [RFC] Sleeping BOD API, Weddington, Eric, 2009/02/06
- Re: [avr-libc-dev] [RFC] Sleeping BOD API, Joerg Wunsch, 2009/02/06
- RE: [avr-libc-dev] [RFC] Sleeping BOD API, Weddington, Eric, 2009/02/06
- Re: [avr-libc-dev] [RFC] Sleeping BOD API, Joerg Wunsch, 2009/02/06
- Message not available
- RE: [avr-libc-dev] [RFC] Sleeping BOD API, Weddington, Eric, 2009/02/06
- Re: [avr-libc-dev] [RFC] Sleeping BOD API, Joerg Wunsch, 2009/02/06
- RE: [avr-libc-dev] [RFC] Sleeping BOD API, Weddington, Eric, 2009/02/06
- Re: [avr-libc-dev] [RFC] Sleeping BOD API, Joerg Wunsch, 2009/02/06
- RE: [avr-libc-dev] [RFC] Sleeping BOD API, Weddington, Eric, 2009/02/06
- Re: [avr-libc-dev] [RFC] Sleeping BOD API, Joerg Wunsch, 2009/02/06
- RE: [avr-libc-dev] [RFC] Sleeping BOD API,
Weddington, Eric <=
- Re: [avr-libc-dev] [RFC] Sleeping BOD API, Joerg Wunsch, 2009/02/07
- Re: [avr-libc-dev] [RFC] Sleeping BOD API, Joerg Wunsch, 2009/02/07
- Re: [avr-libc-dev] [RFC] Sleeping BOD API, Krzysztof Kościuszkiewicz, 2009/02/09
- Re: [avr-libc-dev] [RFC] Sleeping BOD API, Krzysztof Kościuszkiewicz, 2009/02/09
RE: [avr-libc-dev] [RFC] Sleeping BOD API, Weddington, Eric, 2009/02/06
Re: [avr-libc-dev] [RFC] Sleeping BOD API, Bob Paddock, 2009/02/09
Re: [avr-libc-dev] [RFC] Sleeping BOD API, Bob Paddock, 2009/02/12