Re: [RFA] New bitflags type and eflags on i386/x86-64

At 15:52 30/08/2002 , vous avez écrit:
>Andrew Cagney wrote:
>>Is there any immediate technical problem stopping x86-64 linking in 
>>i386-tdep.c?  (Yes scary, multi-arch).
>
>Yes, if both are linked, the gdbarch initialisation is attempted to be done 
>twice and gdb crashes. I could add an #ifdef to optionally ignore some parts 
>of i386-tdep, but IMHO it's better to introduce a new file as DanielJ 
>proposed. See the patch. I've moved both new builtin types and their 
>initialisation to i386-common-tdep.c and modified all config/i386/*.mt files 
>to require it. This approach shouldn't harm MarkK's effort at all.
>Any objections or can I commit it?

This looks quite good in general,
but I don't have the time to test the patch myself...

I was just afraid of one thing :

   will it still be possible to do arithmetics
on those registers ?

   say that you want to clear on flag 
in the $eflags registers

before your patch you could do
  
  set $eflags &=0xfffe
if you wanted to clear the flag at position zero.
Will this still be possible without typecasting the flag register ?
or willsomething like
   set $eflags = $eflags | [ZF]
be possible ?
  




Pierre Muller
Institut Charles Sadron
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