21 Dec
2010
21 Dec
'10
11:53 a.m.
Dear Albert ARIBAUD,
In message 4D1083B4.2060704@free.fr you wrote:
And I at your suggestion tried modifying the binary changing the extra ldrb to a nop and it works.
Seems like a compiler issue to me, as the preprocessed C source is the same for the register access and does not call for a re-read (that is what I wanted to see in the preprocessed version), yet the ASM sequence does the re-read.
I also tend to think this is a compiler problem. Searching the gcc bugzilla entries for "ldrb" turns up quite a number of hits. I'm not sure which of these we are running into here, but there are enough of them so you can chose freely :-(
Best regards,
Wolfgang Denk
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
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1. It is completely impossible - don't waste my time.
2. It is possible, but it is not worth doing.
3. I said it was a good idea all along.