Re: [Gems-users] Ruby magic instructions interference: Warning: in fn void magic_instruction_callback

[Dan Gibson <degibson@xxxxxxxx>]

Ruby handles assumes magic instructions are directives passed to Ruby to 
perform various tasks (eg. begin_transaction, etc.). Its actually a 
*good* thing that you're seeing warnings -- its because Ruby doesn't 
know how to interpret the magic number, and therefore isn't doing anything.
You should have a look at commands.C to see what values Ruby associates 
with various actions. So long as you don't use Ruby's magic numbers, you 
will not incur any Ruby-strangeness due to magic calls.
Since you're using magic number 0, you can safely ignore these warnings. 
You can trivially modify commands.C to recognize "0" as a null command 
and not print the warning at all.
Regards,
Dan

Thomas De Schampheleire wrote:
> Hi,
>
> I am using Simics 2.2.19 and Ruby release 1.2.
> I have added some magic instructions to the OpenSolaris kernel
> (UltraSPARC architecture), which are handled by my own callback
> function. This works as I expect.
>
> However, when adding Ruby to the simulation, I get warnings on every
> magic instruction:
>
> cpu0 [ cycle 56876262505L ]: [ magic 1021 ] disp_getwork()
> Warning: in fn void magic_instruction_callback(void*, void*,
> integer_t) in simics/commands.C:158: val is 0
> Warning: in fn void magic_instruction_callback(void*, void*,
> integer_t) in simics/commands.C:158: val is 0
> Warning: in fn void magic_instruction_callback(void*, void*,
> integer_t) in simics/commands.C:159: Unexpected magic call
> Warning: in fn void magic_instruction_callback(void*, void*,
> integer_t) in simics/commands.C:159: Unexpected magic call
>
> The first line is the line that is printed out by my own handler, and
> the subsequent four lines seem to come from Ruby code.
>
> Can I avoid having these warnings by using other numbers for my magic
> instructions? (which range of magic instructions is used by Ruby?)
> Can my magic instructions interfere with Ruby?
> Can I possibly turn off these warnings?
>
> Thank you,
> Thomas
> _______________________________________________
> Gems-users mailing list
> Gems-users@xxxxxxxxxxx
> https://lists.cs.wisc.edu/mailman/listinfo/gems-users
> Use Google to search the GEMS Users mailing list by adding "site:https://lists.cs.wisc.edu/archive/gems-users/"; to your search.
>
>   
--
http://www.cs.wisc.edu/~gibson [esc]:wq!