x86-64 support for gas part I

[Geoff Keating]

> From: Alexandre Oliva <aoliva@redhat.com>
> Date: 20 Dec 2000 01:56:36 -0200

> This compiler:
> 
> acomp: SC3.0.1 13 Jul 1994 Sun C 3.0.1
> 
> does support 64-bit long longs, but it sign-extended 0x[8-f]XXXXXXX
> instead of taking it as an unsigned type and zero-extending it.

That's OK, since GCC works just fine on Sun machines anyone can build
GCC to compile their cross binutils.  I don't think we support people
building cross binutils or cross GCC with bizzare compilers; it pretty
much has to be ISO C plus a 64-bit type for 64-bit targets.

-- 
- Geoffrey Keating <geoffk@geoffk.org>