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From: dibacco at libero.it <dibacco@libero.it>
To: u-boot@lists.denx.de
Subject: [U-Boot] Strange arm9 behaviour reading long(s) not aligned to 4 bytes boundary
Date: Sat, 24 Jan 2009 17:18:48 +0100 (CET)	[thread overview]
Message-ID: <26134646.40551232813928358.JavaMail.defaultUser@defaultHost> (raw)

Hi,

I have something like this on a 32 bit little endian arm9 board (SAM9 
L9260):

char buffer[] = { 0, 1, 2, 3, 4, 5, 6, 7 };

long A = * ( (long*) 
buffer );
long B = * ( (long*) (buffer + 2) );

printf("A: %08x  B: %08x", A, 
B);

I would expect that A = 0x03020100 and B = 0x05040302
instead I get the 
right value for A but  B is 0x01000302 or something like this but anyway not 
what I expect. 
Is there something wrong on the board? It seems that only 4 
bytes aligned long are read correctly.

Thank you in advance,
Antonio.


 

             reply	other threads:[~2009-01-24 16:18 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-01-24 16:18 dibacco at libero.it [this message]
2009-01-24 17:11 ` [U-Boot] Strange arm9 behaviour reading long(s) not aligned to 4 bytes boundary Måns Rullgård

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