[U-Boot] [PATCH] arm: armv7: add compile option -mno-unaligned-access if available

[Mike Frysinger]

On Monday 02 July 2012 12:14:40 Måns Rullgård wrote:
> It's slightly more complicated than that.  Data can be misaligned for a
> variety of reasons:
> 
> 1. Errors in software.
> 2. Specified by a file format or communication protocol.
> 3. Deliberately misaligned by the compiler.
> 
> Misaligned data of type 1 should of course be fixed properly, not worked
> around in any way.

it's also a reliability aspect.  people don't write bug free software, not bug 
free protocols, nor bug free compilers.  when misalignment does happen in the 
field, it's a hell of a lot better if the software continued to execute 
correctly rather than randomly triggered an exception.
-mike
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