x86-64 fixes: Part 4

[Kevin Ryde]

Andreas Jaeger <aj@suse.de> writes:
>
> +dnl  m4 macros for x86-64 assembler.

Hmm.  Yes, I think that can be separate.  Most of the nonsense in
x86-defs.m4 should be irrelevant to x86_64.

> +define(`call_mcount',

That will probably be completely different.  I haven't had a chance to
look at the ABI spec, if mcount is standardized then hopefully most of
the conditional nonsense can disappear for a start.

(Of course support for profiling the asm routines is not essential,
just nice to have if it can be done without too much trouble.)

> +dnl  Usage: shldl(count,src,dst)

That's purely an i386 syntax workaround, should be unnecessary for
x86_64.