This is the mail archive of the
gcc@gcc.gnu.org
mailing list for the GCC project.
Re: Segment register support for the i386
- To: Denis Chertykov <denisc at overta dot ru>
- Subject: Re: Segment register support for the i386
- From: Jeffrey A Law <law at cygnus dot com>
- Date: Thu, 06 Jan 2000 12:48:32 -0700
- cc: Sergey Larin <larin at overta dot ru>, gcc at gcc dot gnu dot org
- Reply-To: law at cygnus dot com
In message <4scrrp55.fsf@localhost.localdomain>you write:
> Sergey Larin <larin@overta.ru> writes:
>
>
> [...]
>
> > Porting would be much more easier if all that we need is *.h file and
> > instructions description file (*.id) that contains
> > all kinds of machine instructions description of particular target
> > look like RTL expressions.
>
> Really I think only about something like this:
>
> (define-address "VOID" ; for any mode
> (match_operand:HI 0 "immediate_operand" "")
> "/* remain C condition */"
> "%0"
> [(set_attr "cost" "4")])
You should search the 1997 archives -- I believe Michael Hayes started a
discussion about how to describe addressing modes in the md file.
jeff