[parisc-linux] __hp9000s700 predefined

[John David Anglin]

> > John, is there something specific you are concerned about which
> > can't be handled by the above predefined symbols?
> 
> I was just being cautious about __hp9000s[7-8]00.  I looked at some of
> the uses in the hpux 10.X headers, and for usage in gcc and binutils.  I
> don't see any obvious reason why these two symbols need to be defined
> for linux.
> 
> I believe that the compiler only should predefine symbols that are necessary
> for the control of code generation.  Neither CONFIG_XXX or runtime checks
> will help you for this since gcc only has a limited capability to change
> its code generation at runtime.  There appears to be some model dependence
> in the floating point implementations from one pa machine to another.  If
> this can't all be hidden in the kernel, some further specification of the
> hardware might be needed for floating point.  For example, __i686__ is
> defined on the Pentium Pro and is used in bits/mathinline.h.

There is a nice table listing model numbers, architecture and processor
type in /opt/langtools/lib/sched.models under hpux 11.  It still appears
possible to compile and link a PA1.0 app under hpux 11.  I am guessing
but it looks like there are 5 different PA1.1 float implementations (a-e).

Dave
-- 
J. David Anglin                                  dave.anglin@nrc.ca
National Research Council of Canada              (613) 990-0752 (FAX: 952-6605)