[deliverable/linux.git] / arch / x86 / Makefile

# Unified Makefile for i386 and x86_64

# select defconfig based on actual architecture
ifeq ($(ARCH),x86)
        KBUILD_DEFCONFIG := i386_defconfig
else
        KBUILD_DEFCONFIG := $(ARCH)_defconfig
endif

# BITS is used as extension for files which are available in a 32 bit
# and a 64 bit version to simplify shared Makefiles.
# e.g.: obj-y += foo_$(BITS).o
export BITS

ifeq ($(CONFIG_X86_32),y)
        BITS := 32
        UTS_MACHINE := i386
        CHECKFLAGS += -D__i386__

        biarch := $(call cc-option,-m32)
        KBUILD_AFLAGS += $(biarch)
        KBUILD_CFLAGS += $(biarch)

        ifdef CONFIG_RELOCATABLE
                LDFLAGS_vmlinux := --emit-relocs
        endif

        KBUILD_CFLAGS += -msoft-float -mregparm=3 -freg-struct-return

        # Never want PIC in a 32-bit kernel, prevent breakage with GCC built
        # with nonstandard options
        KBUILD_CFLAGS += -fno-pic

        # prevent gcc from keeping the stack 16 byte aligned
        KBUILD_CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2)

        # Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use
        # a lot more stack due to the lack of sharing of stacklots:
        KBUILD_CFLAGS += $(call cc-ifversion, -lt, 0400, \
				$(call cc-option,-fno-unit-at-a-time))

        # CPU-specific tuning. Anything which can be shared with UML should go here.
        include $(srctree)/arch/x86/Makefile_32.cpu
        KBUILD_CFLAGS += $(cflags-y)

        # temporary until string.h is fixed
        KBUILD_CFLAGS += -ffreestanding
else
        BITS := 64
        UTS_MACHINE := x86_64
        CHECKFLAGS += -D__x86_64__ -m64

        KBUILD_AFLAGS += -m64
        KBUILD_CFLAGS += -m64

	# Use -mpreferred-stack-boundary=3 if supported.
	KBUILD_CFLAGS += $(call cc-option,-mno-sse -mpreferred-stack-boundary=3)

        # FIXME - should be integrated in Makefile.cpu (Makefile_32.cpu)
        cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8)
        cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona)

        cflags-$(CONFIG_MCORE2) += \
                $(call cc-option,-march=core2,$(call cc-option,-mtune=generic))
	cflags-$(CONFIG_MATOM) += $(call cc-option,-march=atom) \
		$(call cc-option,-mtune=atom,$(call cc-option,-mtune=generic))
        cflags-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=generic)
        KBUILD_CFLAGS += $(cflags-y)

        KBUILD_CFLAGS += -mno-red-zone
        KBUILD_CFLAGS += -mcmodel=kernel

        # -funit-at-a-time shrinks the kernel .text considerably
        # unfortunately it makes reading oopses harder.
        KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time)

        # this works around some issues with generating unwind tables in older gccs
        # newer gccs do it by default
        KBUILD_CFLAGS += -maccumulate-outgoing-args
endif

ifdef CONFIG_CC_STACKPROTECTOR
	cc_has_sp := $(srctree)/scripts/gcc-x86_$(BITS)-has-stack-protector.sh
        ifeq ($(shell $(CONFIG_SHELL) $(cc_has_sp) $(CC) $(KBUILD_CPPFLAGS) $(biarch)),y)
                stackp-y := -fstack-protector
                KBUILD_CFLAGS += $(stackp-y)
        else
                $(warning stack protector enabled but no compiler support)
        endif
endif

ifdef CONFIG_X86_X32
	x32_ld_ok := $(call try-run,\
			/bin/echo -e '1: .quad 1b' | \
			$(CC) $(KBUILD_AFLAGS) -c -xassembler -o "$$TMP" - && \
			$(OBJCOPY) -O elf32-x86-64 "$$TMP" "$$TMPO" && \
			$(LD) -m elf32_x86_64 "$$TMPO" -o "$$TMP",y,n)
        ifeq ($(x32_ld_ok),y)
                CONFIG_X86_X32_ABI := y
                KBUILD_AFLAGS += -DCONFIG_X86_X32_ABI
                KBUILD_CFLAGS += -DCONFIG_X86_X32_ABI
        else
                $(warning CONFIG_X86_X32 enabled but no binutils support)
        endif
endif
export CONFIG_X86_X32_ABI

# Don't unroll struct assignments with kmemcheck enabled
ifeq ($(CONFIG_KMEMCHECK),y)
	KBUILD_CFLAGS += $(call cc-option,-fno-builtin-memcpy)
endif

# 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)
cfi-sections := $(call as-instr,.cfi_sections .debug_frame,-DCONFIG_AS_CFI_SECTIONS=1)

# does binutils support specific instructions?
asinstr := $(call as-instr,fxsaveq (%rax),-DCONFIG_AS_FXSAVEQ=1)
avx_instr := $(call as-instr,vxorps %ymm0$(comma)%ymm1$(comma)%ymm2,-DCONFIG_AS_AVX=1)

KBUILD_AFLAGS += $(cfi) $(cfi-sigframe) $(cfi-sections) $(asinstr) $(avx_instr)
KBUILD_CFLAGS += $(cfi) $(cfi-sigframe) $(cfi-sections) $(asinstr) $(avx_instr)

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,)
KBUILD_CFLAGS += $(call cc-option,-mno-avx,)

KBUILD_CFLAGS += $(mflags-y)
KBUILD_AFLAGS += $(mflags-y)

archscripts: scripts_basic
	$(Q)$(MAKE) $(build)=arch/x86/tools relocs

###
# Syscall table generation

archheaders:
	$(Q)$(MAKE) $(build)=arch/x86/syscalls all

###
# Kernel objects

head-y := arch/x86/kernel/head_$(BITS).o
head-y += arch/x86/kernel/head$(BITS).o
head-y += arch/x86/kernel/head.o

libs-y  += arch/x86/lib/

# See arch/x86/Kbuild for content of core part of the kernel
core-y += arch/x86/

# 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/

# suspend and hibernation support
drivers-$(CONFIG_PM) += arch/x86/power/

drivers-$(CONFIG_FB) += arch/x86/video/

####
# boot loader support. Several targets are kept for legacy purposes

boot := arch/x86/boot

BOOT_TARGETS = bzlilo bzdisk fdimage fdimage144 fdimage288 isoimage

PHONY += bzImage $(BOOT_TARGETS)

# Default kernel to build
all: bzImage

# KBUILD_IMAGE specify target image being built
KBUILD_IMAGE := $(boot)/bzImage

bzImage: vmlinux
ifeq ($(CONFIG_X86_DECODER_SELFTEST),y)
	$(Q)$(MAKE) $(build)=arch/x86/tools posttest
endif
	$(Q)$(MAKE) $(build)=$(boot) $(KBUILD_IMAGE)
	$(Q)mkdir -p $(objtree)/arch/$(UTS_MACHINE)/boot
	$(Q)ln -fsn ../../x86/boot/bzImage $(objtree)/arch/$(UTS_MACHINE)/boot/$@

$(BOOT_TARGETS): vmlinux
	$(Q)$(MAKE) $(build)=$(boot) $@

PHONY += install
install:
	$(Q)$(MAKE) $(build)=$(boot) $@

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)
	$(Q)$(MAKE) $(clean)=arch/x86/tools

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
Commit	Line	Data
74b469f2 SR	1	# Unified Makefile for i386 and x86_64
74b469f2 SR	2
2266cfd5	3	# select defconfig based on actual architecture
d746d647 SR	4	ifeq ($(ARCH),x86)
	5	KBUILD_DEFCONFIG := i386_defconfig
	6	else
	7	KBUILD_DEFCONFIG := $(ARCH)_defconfig
	8	endif
2266cfd5	9
0a6ef376 SR	10	# BITS is used as extension for files which are available in a 32 bit
	11	# and a 64 bit version to simplify shared Makefiles.
	12	# e.g.: obj-y += foo_$(BITS).o
	13	export BITS
74b469f2	14
d746d647	15	ifeq ($(CONFIG_X86_32),y)
0a6ef376	16	BITS := 32
8c6531f7	17	UTS_MACHINE := i386
4ba7e5cd	18	CHECKFLAGS += -D__i386__
0a6ef376	19
4ba7e5cd SR	20	biarch := $(call cc-option,-m32)
	21	KBUILD_AFLAGS += $(biarch)
	22	KBUILD_CFLAGS += $(biarch)
0a6ef376 SR	23
	24	ifdef CONFIG_RELOCATABLE
	25	LDFLAGS_vmlinux := --emit-relocs
	26	endif
0a6ef376 SR	27
	28	KBUILD_CFLAGS += -msoft-float -mregparm=3 -freg-struct-return
	29
484d90ee AB	30	# Never want PIC in a 32-bit kernel, prevent breakage with GCC built
	31	# with nonstandard options
	32	KBUILD_CFLAGS += -fno-pic
	33
0a6ef376 SR	34	# prevent gcc from keeping the stack 16 byte aligned
	35	KBUILD_CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2)
	36
	37	# Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use
	38	# a lot more stack due to the lack of sharing of stacklots:
c7bd0414 FP	39	KBUILD_CFLAGS += $(call cc-ifversion, -lt, 0400, \
c7bd0414 FP	40	$(call cc-option,-fno-unit-at-a-time))
0a6ef376 SR	41
	42	# CPU-specific tuning. Anything which can be shared with UML should go here.
	43	include $(srctree)/arch/x86/Makefile_32.cpu
	44	KBUILD_CFLAGS += $(cflags-y)
	45
	46	# temporary until string.h is fixed
	47	KBUILD_CFLAGS += -ffreestanding
74b469f2	48	else
0a6ef376	49	BITS := 64
8c6531f7	50	UTS_MACHINE := x86_64
0a6ef376 SR	51	CHECKFLAGS += -D__x86_64__ -m64
	52
	53	KBUILD_AFLAGS += -m64
	54	KBUILD_CFLAGS += -m64
	55
d9b0cde9 L	56	# Use -mpreferred-stack-boundary=3 if supported.
	57	KBUILD_CFLAGS += $(call cc-option,-mno-sse -mpreferred-stack-boundary=3)
	58
0a6ef376 SR	59	# FIXME - should be integrated in Makefile.cpu (Makefile_32.cpu)
	60	cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8)
	61	cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona)
	62
	63	cflags-$(CONFIG_MCORE2) += \
	64	$(call cc-option,-march=core2,$(call cc-option,-mtune=generic))
366d19e1 TD	65	cflags-$(CONFIG_MATOM) += $(call cc-option,-march=atom) \
366d19e1 TD	66	$(call cc-option,-mtune=atom,$(call cc-option,-mtune=generic))
0a6ef376 SR	67	cflags-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=generic)
	68	KBUILD_CFLAGS += $(cflags-y)
	69
	70	KBUILD_CFLAGS += -mno-red-zone
	71	KBUILD_CFLAGS += -mcmodel=kernel
	72
0a6ef376 SR	73	# -funit-at-a-time shrinks the kernel .text considerably
	74	# unfortunately it makes reading oopses harder.
	75	KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time)
	76
0a6ef376 SR	77	# this works around some issues with generating unwind tables in older gccs
	78	# newer gccs do it by default
	79	KBUILD_CFLAGS += -maccumulate-outgoing-args
5d707e9c	80	endif
0a6ef376	81
5d707e9c TH	82	ifdef CONFIG_CC_STACKPROTECTOR
5d707e9c TH	83	cc_has_sp := $(srctree)/scripts/gcc-x86_$(BITS)-has-stack-protector.sh
08c2b394	84	ifeq ($(shell $(CONFIG_SHELL) $(cc_has_sp) $(CC) $(KBUILD_CPPFLAGS) $(biarch)),y)
5d707e9c	85	stackp-y := -fstack-protector
5d707e9c TH	86	KBUILD_CFLAGS += $(stackp-y)
	87	else
	88	$(warning stack protector enabled but no compiler support)
	89	endif
0a6ef376 SR	90	endif
0a6ef376 SR	91
0bf62763 PA	92	ifdef CONFIG_X86_X32
	93	x32_ld_ok := $(call try-run,\
	94	/bin/echo -e '1: .quad 1b' \| \
	95	$(CC) $(KBUILD_AFLAGS) -c -xassembler -o "$$TMP" - && \
	96	$(OBJCOPY) -O elf32-x86-64 "$$TMP" "$$TMPO" && \
	97	$(LD) -m elf32_x86_64 "$$TMPO" -o "$$TMP",y,n)
8bd69c2d IM	98	ifeq ($(x32_ld_ok),y)
	99	CONFIG_X86_X32_ABI := y
	100	KBUILD_AFLAGS += -DCONFIG_X86_X32_ABI
	101	KBUILD_CFLAGS += -DCONFIG_X86_X32_ABI
	102	else
	103	$(warning CONFIG_X86_X32 enabled but no binutils support)
	104	endif
0bf62763 PA	105	endif
	106	export CONFIG_X86_X32_ABI
	107
dfec072e VN	108	# Don't unroll struct assignments with kmemcheck enabled
	109	ifeq ($(CONFIG_KMEMCHECK),y)
	110	KBUILD_CFLAGS += $(call cc-option,-fno-builtin-memcpy)
	111	endif
	112
0a6ef376 SR	113	# Stackpointer is addressed different for 32 bit and 64 bit x86
	114	sp-$(CONFIG_X86_32) := esp
	115	sp-$(CONFIG_X86_64) := rsp
	116
	117	# do binutils support CFI?
	118	cfi := $(call as-instr,.cfi_startproc\n.cfi_rel_offset $(sp-y)$(comma)0\n.cfi_endproc,-DCONFIG_AS_CFI=1)
	119	# is .cfi_signal_frame supported too?
	120	cfi-sigframe := $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1)
9e565292	121	cfi-sections := $(call as-instr,.cfi_sections .debug_frame,-DCONFIG_AS_CFI_SECTIONS=1)
d7acb92f PA	122
	123	# does binutils support specific instructions?
	124	asinstr := $(call as-instr,fxsaveq (%rax),-DCONFIG_AS_FXSAVEQ=1)
ea4d26ae	125	avx_instr := $(call as-instr,vxorps %ymm0$(comma)%ymm1$(comma)%ymm2,-DCONFIG_AS_AVX=1)
d7acb92f	126
ea4d26ae JK	127	KBUILD_AFLAGS += $(cfi) $(cfi-sigframe) $(cfi-sections) $(asinstr) $(avx_instr)
ea4d26ae JK	128	KBUILD_CFLAGS += $(cfi) $(cfi-sigframe) $(cfi-sections) $(asinstr) $(avx_instr)
0a6ef376 SR	129
0a6ef376 SR	130	LDFLAGS := -m elf_$(UTS_MACHINE)
25dfeeb7 SR	131
25dfeeb7 SR	132	# Speed up the build
0a6ef376	133	KBUILD_CFLAGS += -pipe
25dfeeb7 SR	134	# Workaround for a gcc prelease that unfortunately was shipped in a suse release
	135	KBUILD_CFLAGS += -Wno-sign-compare
	136	#
	137	KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
	138	# prevent gcc from generating any FP code by mistake
	139	KBUILD_CFLAGS += $(call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,)
c0e9afc0	140	KBUILD_CFLAGS += $(call cc-option,-mno-avx,)
0a6ef376	141
0a6ef376 SR	142	KBUILD_CFLAGS += $(mflags-y)
	143	KBUILD_AFLAGS += $(mflags-y)
	144
24cc7fb6	145	archscripts: scripts_basic
6520fe55 PA	146	$(Q)$(MAKE) $(build)=arch/x86/tools relocs
6520fe55 PA	147
303395ac PA	148	###
	149	# Syscall table generation
	150
	151	archheaders:
	152	$(Q)$(MAKE) $(build)=arch/x86/syscalls all
	153
0a6ef376 SR	154	###
	155	# Kernel objects
	156
700efc1b EB	157	head-y := arch/x86/kernel/head_$(BITS).o
700efc1b EB	158	head-y += arch/x86/kernel/head$(BITS).o
0c51a965	159	head-y += arch/x86/kernel/head.o
0a6ef376 SR	160
	161	libs-y += arch/x86/lib/
	162
d1f0ae5e SR	163	# See arch/x86/Kbuild for content of core part of the kernel
d1f0ae5e SR	164	core-y += arch/x86/
0a6ef376 SR	165
	166	# drivers-y are linked after core-y
	167	drivers-$(CONFIG_MATH_EMULATION) += arch/x86/math-emu/
	168	drivers-$(CONFIG_PCI) += arch/x86/pci/
	169
	170	# must be linked after kernel/
	171	drivers-$(CONFIG_OPROFILE) += arch/x86/oprofile/
	172
cf7700fe	173	# suspend and hibernation support
0a6ef376	174	drivers-$(CONFIG_PM) += arch/x86/power/
cf7700fe	175
0a6ef376	176	drivers-$(CONFIG_FB) += arch/x86/video/
0a6ef376 SR	177
	178	####
	179	# boot loader support. Several targets are kept for legacy purposes
	180
	181	boot := arch/x86/boot
	182
1648e4f8	183	BOOT_TARGETS = bzlilo bzdisk fdimage fdimage144 fdimage288 isoimage
f9c5107c PA	184
f9c5107c PA	185	PHONY += bzImage $(BOOT_TARGETS)
0a6ef376 SR	186
	187	# Default kernel to build
	188	all: bzImage
	189
	190	# KBUILD_IMAGE specify target image being built
f9c5107c	191	KBUILD_IMAGE := $(boot)/bzImage
0a6ef376	192
f9c5107c	193	bzImage: vmlinux
ca0e9bad MH	194	ifeq ($(CONFIG_X86_DECODER_SELFTEST),y)
	195	$(Q)$(MAKE) $(build)=arch/x86/tools posttest
	196	endif
0a6ef376 SR	197	$(Q)$(MAKE) $(build)=$(boot) $(KBUILD_IMAGE)
0a6ef376 SR	198	$(Q)mkdir -p $(objtree)/arch/$(UTS_MACHINE)/boot
41b3eae6	199	$(Q)ln -fsn ../../x86/boot/bzImage $(objtree)/arch/$(UTS_MACHINE)/boot/$@
0a6ef376	200
f9c5107c PA	201	$(BOOT_TARGETS): vmlinux
f9c5107c PA	202	$(Q)$(MAKE) $(build)=$(boot) $@
0a6ef376	203
1648e4f8 PA	204	PHONY += install
	205	install:
	206	$(Q)$(MAKE) $(build)=$(boot) $@
	207
0a6ef376 SR	208	PHONY += vdso_install
	209	vdso_install:
	210	$(Q)$(MAKE) $(build)=arch/x86/vdso $@
	211
	212	archclean:
	213	$(Q)rm -rf $(objtree)/arch/i386
	214	$(Q)rm -rf $(objtree)/arch/x86_64
	215	$(Q)$(MAKE) $(clean)=$(boot)
b2d668da	216	$(Q)$(MAKE) $(clean)=arch/x86/tools
0a6ef376 SR	217
0a6ef376 SR	218	define archhelp
37f30e21 AK	219	echo '* bzImage - Compressed kernel image (arch/x86/boot/bzImage)'
37f30e21 AK	220	echo ' install - Install kernel using'
caa27b66 SR	221	echo ' (your) ~/bin/$(INSTALLKERNEL) or'
caa27b66 SR	222	echo ' (distribution) /sbin/$(INSTALLKERNEL) or'
37f30e21 AK	223	echo ' install to $$(INSTALL_PATH) and run lilo'
	224	echo ' fdimage - Create 1.4MB boot floppy image (arch/x86/boot/fdimage)'
	225	echo ' fdimage144 - Create 1.4MB boot floppy image (arch/x86/boot/fdimage)'
	226	echo ' fdimage288 - Create 2.8MB boot floppy image (arch/x86/boot/fdimage)'
	227	echo ' isoimage - Create a boot CD-ROM image (arch/x86/boot/image.iso)'
	228	echo ' bzdisk/fdimage*/isoimage also accept:'
	229	echo ' FDARGS="..." arguments for the booted kernel'
	230	echo ' FDINITRD=file initrd for the booted kernel'
0a6ef376	231	endef