x86_64: prepare shared kernel/head.S

CFLAGS_KERNEL += $(cflags-kernel-y)

AFLAGS += -m64

head-y := arch/x86_64/kernel/head.o arch/x86_64/kernel/head64.o arch/x86_64/kernel/init_task_64.o

head-y := arch/x86_64/kernel/head_64.o arch/x86_64/kernel/head64.o arch/x86_64/kernel/init_task_64.o

libs-y 					+= arch/x86_64/lib/

core-y					+= arch/x86_64/kernel/ \

# Makefile for the linux kernel.

#

extra-y 	:= head.o head64.o init_task_64.o vmlinux.lds

extra-y 	:= head_64.o head64.o init_task_64.o vmlinux.lds

EXTRA_AFLAGS	:= -traditional

obj-y	:= process_64.o signal_64.o entry_64.o traps_64.o irq_64.o \

		ptrace_64.o time_64.o ioport_64.o ldt_64.o setup_64.o i8259_64.o sys_x86_64.o \