[PATCH,sim] properly handle sync instruction variants

[Daniel Jacobowitz]

On Mon, Jan 12, 2009 at 10:09:54AM -0800, Nathan Froyd wrote:
> Recent Power ISAs have included the ability to control the type of
> memory accesses ordered by the `sync' instruction by means of a two-bit
> field.  The patch below modifies the ppc simulator's instruction
> description to take note of this two-bit field.
> 
> Tested on powerpc-none-eabi, where it fixes ~140 g++ testsuite failures
> and a handful of gcc failures.  OK to commit?

OK.

-- 
Daniel Jacobowitz
CodeSourcery