status of amd64

[Petr Salinger]

Hi!

> I've seen lots of amd64-related commits by Petr,
> so I thought that maybe the thing works now.  Does it?

It "cross" compiles. 
Next step is test some static binaries under an amd64 FreeBSD kernel.
I don't have an one.

TODO list:

* decide ld.so location
         It should be unique between all (at least Debian) ports,
         namely not the same as on kfreebsd-i386 (/lib/ld.so.1).
         See also http://www.linuxbase.org/futures/ideas/multiarch/index.html

         Proposed: /lib/ld-kfreebsd-amd64.so.1


* toolchain (gcc, binutils) support
         Write config bits for proper
         ld.so location:         /lib/ld.so.1    /lib/ld-kfreebsd-amd64.so.1
         emulation:              elf_i386_fbsd   elf_x86_64_fbsd
         ...

         Ideally, we should support gcc in variants
                 cross
                 biarch on i386
                 native on amd64
                 biarch on amd64

* biarch capable kfreebsd-kernel-headers
         similarly to linux-kernel-headers,
         all files in /usr/include/machine should be autogenerated in form
         on kfreebsd-i386
                 #ifdef __x86_64__
                 # include <amd64/param.h>
                 #else
                 # include <i386/param.h>
                 #endif
         on kfreebsd-amd64
                 #ifdef __i386__
                 # include <i386/param.h>
                 #else
                 # include <amd64/param.h>
                 #endif

         the first step is to provide content of dir amd64,
         it would be sufficient for test builds of glibc


* prepare kernel


Petr