Register numbers on hppa64

[Randolph Chung]

> If fixing things for GCC means that we break the HP compilers, we
> should do so: GDB is part of the GNU project so its primary job should
> be supporting the GNU compiler, not some proprietary compiler.

While I do not disagree either from a pragmatic (ability to test) and a 
philosophical point of view, if somebody who cares speaks up with the 
required info I think we should try to continue to support the HP 
compilers. Of course if we cannot get to the required information we 
shouldn't hold up progress in supporting gcc.

> It looks like we need some
> GCC_DEVELOPERS_DONT_THINK_BEFORE_THEY_CODE_MAP_REG_TO_REGNUM mapping.
> (sorry Dave) Sigh....
> 
> Well, let's call it dwarf2_frame_reg_to_regnum().

I'll submit a patch to gdb-patches to implement this for hppa64 shortly.

randolph