Re: [RFA] Fix recent compilation errors in alpha-nat.c on alpha-osf

[Andrew Cagney <ac131313 at cygnus dot com>]

>  From: Joel Brobecker <brobecker@ACT-Europe.FR>
> Date: Tue, 23 Apr 2002 12:14:42 +0200
> 
>    Thanks for the help. I relaunched the testsuite, and here are the
>    results on our Tru64 5.1A machine. They should be identical to
>    yesterday's results: 
>    
>    # of unexpected failures        791
> 
> This reminds me of an issue Richard Henderson mentioned to
> me.  At least at one point in time gdb got really confused when gcc
> used float regs for integer values.  This happens quite often on
> Alpha, and can happen on other systems too (Sparc when usage of
> VIS instructions is enabled).
> 
> Does GDB still have a problem with this situation?

The *CONVERT* stuff should be capable of handling this.  For the Alpha, 
PeterS added:

Tue Nov  2 13:42:30 1993  Peter Schauer 
(pes@regent.e-technik.tu-muenchen.de)

         * alpha-tdep.c (alpha_register_convert_to_raw,
         alpha_register_convert_to_virtual):  New routines to handle
         the different raw formats in alpha floating point registers.
         * config/alpha/tm-alpha.h (REGISTER_CONVERTIBLE,
         REGISTER_CONVERT_TO_VIRTUAL, REGISTER_CONVERT_TO_RAW):  Use them.

So it is certanly using the correct mechanism.  Perhaphs if you can give 
a concrete example it can be fixed.

enjoy,
Andrew

(A word of caution - the CONVERT stuff is overloaded, the above use is 
ok but the second use as seen in the MIPS isn't).