a question about rs6k's prologue analysis

[Wu Zhou]

Joel Brobecker wrote:
 >> I knew this sounded familiar.  Here it is:
 >
 > Yes, me too! :-)
 >
 >>   http://sourceware.org/ml/gdb-patches/2004-12/msg00234.html
 >>   http://sourceware.org/ml/gdb-patches/2005-06/msg00242.html
 >>
 >> Joel, things have changed a lot since then - if you have a chance to
 >> respond to my last message there, I'll take another look at it.
 >
 > For the record:
 >
 >     http://www.sourceware.org/ml/gdb-patches/2006-10/msg00119.html
 >

I had a test with your patch, changing the blrl test to be additional.  It works ok in my scenario.

But I don't do any regression test yet (will do that later, having other things for rush).  Also 
that I am now applying your patch to RHEL4's gdb sources (It seems that community gdb has some 
problems on ppc64, which hinders our scenario.).  I will apply that patch to community source later 
to see if there are any regression.

BTW, adapting the first three instructions to be four don't work in some cases.  I see some cases 
where bl_to_blrl occurs at about the 6th or even 8th instruction of the prologue.

Thanks a lot for all your help.  I will return back to regression test a while later.

Regards
- Wu Zhou