Hi all,
this patch synces gdb with recent ABI changes in x86-64 kernel, which 
added segment registers to user_regs_struct in corefile and ptrace() 
call. Because it was hard to find all places which could depend on this 
change I also did a cleanup. I joined most of registers information to 
one structure at the beginning of x86-64-tdep.c to make it more readable 
  and maintainable and changed some "anonymous constants" (numbers) to 
derivatives of #defines.
Can I commit?

Index: ChangeLog
	* x86-64-tdep.h (X86_64_NUM_REGS)
	(X86_64_NUM_GREGS): Delete #defines
	(x86_64_num_regs)
	(x86_64_num_gregs): Added extern variables.
	* x86-64-linux-nat.c (x86_64_regmap): Swapped
	RBX <> RDX, added DS, ES, FD, GS
	(x86_64_linux_dr_get_status), (supply_gregset),
	(fill_gregset): Changed X86_64_NUM_GREGS to
	x86_64_num_gregs
	* x86-64-tdep.c (x86_64_register_raw_size_table): Delete
	(x86_64_register_info_table): Add
	(X86_64_NUM_REGS, X86_64_NUM_GREGS): Add
	(x86_64_register_raw_size),
	(x86_64_register_virtual_type),
	(x86_64_register_name),
	(_initialize_x86_64_tdep): Changed to reflect new
	general x86_64_register_info_table.
	(i386_gdbarch_init): gdbarch_register_bytes is now set
	dynamicaly during initialization.

Michal Ludvig
-- 
* SuSE CR, s.r.o     * mludvig@suse.cz
* +420 2 9654 5373   * http://www.suse.cz