[PATCHv3,Hurd] Add hardware watch support

Thomas Schwinge thomas@codesourcery.com
Wed Sep 17 09:02:00 GMT 2014


Hi Samuel!

On Wed, 17 Sep 2014 01:17:06 +0200, Samuel Thibault <samuel.thibault@gnu.org> wrote:
> Thomas Schwinge, le Tue 16 Sep 2014 10:59:47 +0200, a écrit :
> > On Tue, 16 Sep 2014 01:09:50 +0200, Samuel Thibault <samuel.thibault@gnu.org> wrote:
> > > Thomas Schwinge, le Tue 16 Sep 2014 00:08:01 +0200, a écrit :
> > > > Do you agree that thread_get_state(i386_DEBUG_STATE) should be
> > > > returning the actual DR6,

> --- a/i386/i386/trap.c
> +++ b/i386/i386/trap.c
> @@ -395,6 +395,10 @@ printf("user trap %d error %d sub %08x\n", type, code, subcode);
>  			return 0;
>  		}
>  #endif /* MACH_KDB */
> +		/* Make the content of the debug status register (DR6)
> +		   available to user space.  */
> +		thread->pcb->ims.ids.dr[6] = get_dr6() & 0x600F;
> +		set_dr6(0);
>  		exc = EXC_BREAKPOINT;
>  		code = EXC_I386_SGL;
>  		break;
> 
> Does it fix GDB too?

Yes.


Grüße,
 Thomas
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