Add support for target switches in simulator

[Richard Earnshaw]

nickc@cambridge.redhat.com said:
> 
>   I would like permission to apply the following patch.  It adds the
>   ability for simulator backends to parse their own command line
>   switches, thus creating target specific simulator options.
>
>   I would like this facility in order to be able to add a new switch
>   to the ARM simulator - a switch to select which set(s) of SWI
>   emulations it should perform.
>
>   I have not worked out how this feature would be accessed from GDB.
>   My guess is that the switches could be added to the arguments passed
>   via sim_open(), but how would a GDB user tell GDB to add these
>   switches ? 

Hmm, I thought there was already a way to tell the simulator what amount 
of memory to use.  Couldn't a similar method be employed.

R.

PS.  I haven't looked at how that was done, but I recall a discussion 
about this recently on the mailing list related to increasing the amount 
of memory for a Java testsuite run.