Re: [RFA] frv-sim: don't abort on illegal instruction

[Dave Brolley <brolley at redhat dot com>]

OK -- approved. Please also look at the other interrupts to see if there 
are other candidates for this treatment.

Dave

Michael Snyder wrote:

> This will make debugging easier -- treat an illegal instruction
> as a SIGILL rather than aborting.
>
> ------------------------------------------------------------------------
>
> 2003-09-11  Michael Snyder  <msnyder@redhat.com>
>
> 	* interrupts.c (frv_non_operating_interrupt): Call 
> 	sim_engine_halt instead of sim_engine_abort.  It's a 
> 	sigill, we want to be able to debug it.
>
> Index: interrupts.c
> ===================================================================
> RCS file: /cvs/src/src/sim/frv/interrupts.c,v
> retrieving revision 1.1
> diff -p -r1.1 interrupts.c
> *** interrupts.c	29 Aug 2003 16:35:46 -0000	1.1
> --- interrupts.c	11 Sep 2003 20:41:24 -0000
> *************** frv_non_operating_interrupt (
> *** 1020,1027 ****
>  			"interrupt: privileged_instruction\n");
>        break;
>      case FRV_ILLEGAL_INSTRUCTION:
> !       sim_engine_abort (sd, current_cpu, pc,
> ! 			"interrupt: illegal_instruction\n");
>        break;
>      case FRV_INSTRUCTION_ACCESS_EXCEPTION:
>        sim_engine_abort (sd, current_cpu, pc,
> --- 1020,1026 ----
>  			"interrupt: privileged_instruction\n");
>        break;
>      case FRV_ILLEGAL_INSTRUCTION:
> !       sim_engine_halt (sd, current_cpu, NULL, pc, sim_stopped, SIM_SIGILL);
>        break;
>      case FRV_INSTRUCTION_ACCESS_EXCEPTION:
>        sim_engine_abort (sd, current_cpu, pc,
>