RFC/Patch more xmon additions

[will schmidt]

Hi All,
   here's a revised version of my initial patch.

- I've removed the try_spinlock code;
- As an alternative to duplicating lots of function to add mread calls 
in place of references, I've added setjmp(bus_error_jmp) {} around what 
seem more likely to be critical areas.
- cleaned up spacing
- changed most of the function names to be xmon_xxx instead of wm_xxx.

these functions show up under a submenu 'w'.   use "w?" at xmon> prompt 
to get the help blurb.

-Will

will schmidt wrote:
> 
> Hi Folks,
> Am looking for comments on this additional function i've added to xmon 
> on the side..
> 
> the bulk of my intent was to make it easier for me to poke at memory 
> within a particular user process.
> 
> I realize that the spacing is a bit screwed up, and the function names 
> should eventually change.   Because i couldnt decide on letters for the 
> new functions, i put them under a submenu 'w'.
> 
> wP will dump info on all processes.
> 
> wp 0xabc  will make process with pid 0xabc the active pid. <- active 
> only with respect to xmon poking into memory.
> 
> wd 0xabcd1234 - will call through the pdg/pmd functions and return the 
> kernel address corresponding to 0xabcd1234 within the processes memory 
> space location.
> 
> wg  will dump gprs of the process/thread.
> 
> -Will
> 
> 
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> 
> 
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