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.
ARM9 does not support unaligned load/store. Yours is apparently
configured in the round-and-rotate mode. e
Then my code is simply wrong, that is, not allowed? If I have to port code from a PPC (that handles unaligned accesses) to an ARM9 it is painful operation..., isn't it?
Bye, Antonio.