+
+# Stackpointer is addressed different for 32 bit and 64 bit x86
+sp-$(CONFIG_X86_32) := esp
+sp-$(CONFIG_X86_64) := rsp
+
+# do binutils support CFI?
+cfi := $(call as-instr,.cfi_startproc\n.cfi_rel_offset $(sp-y)$(comma)0\n.cfi_endproc,-DCONFIG_AS_CFI=1)
+# is .cfi_signal_frame supported too?
+cfi-sigframe := $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1)
+KBUILD_AFLAGS += $(cfi) $(cfi-sigframe)
+KBUILD_CFLAGS += $(cfi) $(cfi-sigframe)
+
+LDFLAGS := -m elf_$(UTS_MACHINE)
+
+# Speed up the build
+KBUILD_CFLAGS += -pipe
+# Workaround for a gcc prelease that unfortunately was shipped in a suse release
+KBUILD_CFLAGS += -Wno-sign-compare
+#
+KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
+# prevent gcc from generating any FP code by mistake
+KBUILD_CFLAGS += $(call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,)
+
+###
+# Sub architecture support
+# fcore-y is linked before mcore-y files.
+
+# Default subarch .c files
+mcore-y := arch/x86/mach-default/
+
+# Voyager subarch support
+mflags-$(CONFIG_X86_VOYAGER) := -Iinclude/asm-x86/mach-voyager
+mcore-$(CONFIG_X86_VOYAGER) := arch/x86/mach-voyager/
+
+# VISWS subarch support
+mflags-$(CONFIG_X86_VISWS) := -Iinclude/asm-x86/mach-visws
+mcore-$(CONFIG_X86_VISWS) := arch/x86/mach-visws/
+
+# NUMAQ subarch support
+mflags-$(CONFIG_X86_NUMAQ) := -Iinclude/asm-x86/mach-numaq
+mcore-$(CONFIG_X86_NUMAQ) := arch/x86/mach-default/
+
+# BIGSMP subarch support
+mflags-$(CONFIG_X86_BIGSMP) := -Iinclude/asm-x86/mach-bigsmp
+mcore-$(CONFIG_X86_BIGSMP) := arch/x86/mach-default/
+
+#Summit subarch support
+mflags-$(CONFIG_X86_SUMMIT) := -Iinclude/asm-x86/mach-summit
+mcore-$(CONFIG_X86_SUMMIT) := arch/x86/mach-default/
+
+# generic subarchitecture
+mflags-$(CONFIG_X86_GENERICARCH):= -Iinclude/asm-x86/mach-generic
+fcore-$(CONFIG_X86_GENERICARCH) += arch/x86/mach-generic/
+mcore-$(CONFIG_X86_GENERICARCH) := arch/x86/mach-default/
+
+
+# ES7000 subarch support
+mflags-$(CONFIG_X86_ES7000) := -Iinclude/asm-x86/mach-es7000
+fcore-$(CONFIG_X86_ES7000) := arch/x86/mach-es7000/
+mcore-$(CONFIG_X86_ES7000) := arch/x86/mach-default/
+
+# RDC R-321x subarch support
+mflags-$(CONFIG_X86_RDC321X) := -Iinclude/asm-x86/mach-rdc321x
+mcore-$(CONFIG_X86_RDC321X) := arch/x86/mach-default/
+core-$(CONFIG_X86_RDC321X) += arch/x86/mach-rdc321x/
+
+# default subarch .h files
+mflags-y += -Iinclude/asm-x86/mach-default
+
+# 64 bit does not support subarch support - clear sub arch variables
+fcore-$(CONFIG_X86_64) :=
+mcore-$(CONFIG_X86_64) :=
+mflags-$(CONFIG_X86_64) :=
+
+KBUILD_CFLAGS += $(mflags-y)
+KBUILD_AFLAGS += $(mflags-y)
+
+###
+# Kernel objects
+
+head-y := arch/x86/kernel/head_$(BITS).o
+head-$(CONFIG_X86_64) += arch/x86/kernel/head64.o
+head-y += arch/x86/kernel/init_task.o
+
+libs-y += arch/x86/lib/
+
+# Sub architecture files that needs linking first
+core-y += $(fcore-y)
+
+# Xen paravirtualization support
+core-$(CONFIG_XEN) += arch/x86/xen/
+
+# lguest paravirtualization support
+core-$(CONFIG_LGUEST_GUEST) += arch/x86/lguest/
+
+core-y += arch/x86/kernel/
+core-y += arch/x86/mm/
+
+# Remaining sub architecture files
+core-y += $(mcore-y)
+
+core-y += arch/x86/crypto/
+core-y += arch/x86/vdso/
+core-$(CONFIG_IA32_EMULATION) += arch/x86/ia32/
+
+# drivers-y are linked after core-y
+drivers-$(CONFIG_MATH_EMULATION) += arch/x86/math-emu/
+drivers-$(CONFIG_PCI) += arch/x86/pci/
+
+# must be linked after kernel/
+drivers-$(CONFIG_OPROFILE) += arch/x86/oprofile/
+
+ifeq ($(CONFIG_X86_32),y)
+drivers-$(CONFIG_PM) += arch/x86/power/
+drivers-$(CONFIG_FB) += arch/x86/video/
+endif
+
+####
+# boot loader support. Several targets are kept for legacy purposes
+
+boot := arch/x86/boot
+
+PHONY += zImage bzImage compressed zlilo bzlilo \
+ zdisk bzdisk fdimage fdimage144 fdimage288 isoimage install
+
+# Default kernel to build
+all: bzImage
+
+# KBUILD_IMAGE specify target image being built
+ KBUILD_IMAGE := $(boot)/bzImage
+zImage zlilo zdisk: KBUILD_IMAGE := arch/x86/boot/zImage
+
+zImage bzImage: vmlinux
+ $(Q)$(MAKE) $(build)=$(boot) $(KBUILD_IMAGE)
+ $(Q)mkdir -p $(objtree)/arch/$(UTS_MACHINE)/boot
+ $(Q)ln -fsn ../../x86/boot/bzImage $(objtree)/arch/$(UTS_MACHINE)/boot/bzImage
+
+compressed: zImage
+
+zlilo bzlilo: vmlinux
+ $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zlilo
+
+zdisk bzdisk: vmlinux
+ $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zdisk
+
+fdimage fdimage144 fdimage288 isoimage: vmlinux
+ $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) $@
+
+install: vdso_install
+ $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) install
+
+PHONY += vdso_install
+vdso_install:
+ $(Q)$(MAKE) $(build)=arch/x86/vdso $@
+
+archclean:
+ $(Q)rm -rf $(objtree)/arch/i386
+ $(Q)rm -rf $(objtree)/arch/x86_64
+ $(Q)$(MAKE) $(clean)=$(boot)
+
+define archhelp
+ echo '* bzImage - Compressed kernel image (arch/x86/boot/bzImage)'
+ echo ' install - Install kernel using'
+ echo ' (your) ~/bin/installkernel or'
+ echo ' (distribution) /sbin/installkernel or'
+ echo ' install to $$(INSTALL_PATH) and run lilo'
+ echo ' fdimage - Create 1.4MB boot floppy image (arch/x86/boot/fdimage)'
+ echo ' fdimage144 - Create 1.4MB boot floppy image (arch/x86/boot/fdimage)'
+ echo ' fdimage288 - Create 2.8MB boot floppy image (arch/x86/boot/fdimage)'
+ echo ' isoimage - Create a boot CD-ROM image (arch/x86/boot/image.iso)'
+ echo ' bzdisk/fdimage*/isoimage also accept:'
+ echo ' FDARGS="..." arguments for the booted kernel'
+ echo ' FDINITRD=file initrd for the booted kernel'
+endef
+
+CLEAN_FILES += arch/x86/boot/fdimage \
+ arch/x86/boot/image.iso \
+ arch/x86/boot/mtools.conf