This is the patch to which Kevin refers below. I've committed it.

Dave

Kevin Buettner wrote:

>The patch below depends on some work that Dave Brolley has done on the
>simulator.  I'll commit the change below after Dave commits his patch.
>
>I'll eventually provide a pseudo-register for obtaining access iacc0
>as a unit (instead of separate upper and lower halves).  But, before
>that happens, I have some more de-deprecation to do first.
>
>Of all the SPRs the FR-V has, the simulator had only implemented
>support for fetching / setting the link register.  Dave's patch will
>provide GDB with the ability to access all of them, making it very
>easy to add support for other SPRs from GDB.  The patch below (in
>conjunction with Dave's patch) will enable support for all of the
>SPRs presently known to GDB (including iacc0).
>
>I had considered (attempting) to provide support for all known FR-V
>SPRs from GDB, but there were a number of drawbacks with doing this:
>1) The g/G packet would get very large.  2) There are a lot of "holes"
>in the register set do to reserved registers, unimplemented registers,
>and the like.  3) I don't think it makes sense for all of the remaining
>registers to be fetched/set via g/G packets.
>
>Kevin
>
>  
>