tree 9865e21372daae64f705b167a00af979b9ff931f
parent 98dec91fa36a4a74f7c44dd2dfb000203656f4f4
author Ben Dooks <ben.dooks@codethink.co.uk> 1374178256 +0100
committer Ben Dooks <ben.dooks@codethink.co.uk> 1382211994 +0100

ARM: alignment: correctly decode instructions in BE8 mode.

If we are in BE8 mode, we must deal with the instruction stream being
in LE order when data is being loaded in BE order. Ensure the data is
swapped before processing to avoid thre following:

Change to using <asm/opcodes.h> to provide the necessary conversion
functions to change the byte ordering.

This stops the following warning messages from the kernel on a fault:

Unhandled fault: alignment exception (0x001) at 0xbfa09567
Alignment trap: not handling instruction 030091e8 at [<80333e8c>]

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Reviewed-by: Dave Martin <Dave.Martin@arm.com>
Tested-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>