Re: vhpt_miss handler question?

Keith Owens
2003-09-26T14:54:23Z

On Fri, 26 Sep 2003 09:43:55 -0500,
Mario Smarduch <cms063@email.mot.com> wrote:
>Some work I'm doing has taken me to the vhpt_miss
>handler. I've been looking at the following snippet just
>wondering what happens in the case where the present
>bit is 0 and p10,p11 predicates are not set anotherwords
>they retain their application values. Would this not
>cause an errant insertion if either p10 or p11 were
>true in the application prior to the VHPT handler?

>(p7) tbit.nz.unc p10,p11=r19,32 // is it an instruction

tbit.xx.unc sets both predicates to 0 if the controlling predicate is
false. See the 'else' clause on page 3:229 of Document Number:
245319-004 (ia64 Volume 3: Instruction Set Reference).