1#
2# x86_64/Makefile
3#
4# This file is included by the global makefile so that you can add your own
5# architecture-specific flags and dependencies. Remember to do have actions
6# for "archclean" and "archdep" for cleaning up and making dependencies for
7# this architecture
8#
9# This file is subject to the terms and conditions of the GNU General Public
10# License.  See the file "COPYING" in the main directory of this archive
11# for more details.
12#
13# Copyright (C) 1994 by Linus Torvalds
14#
15# 19990713  Artur Skawina <skawina@geocities.com>
16#           Added '-march' and '-mpreferred-stack-boundary' support
17# 20000913  Pavel Machek <pavel@suse.cz>
18#	    Converted for x86_64 architecture
19# 20010105  Andi Kleen, add IA32 compiler.
20#           ....and later removed it again....
21#
22# $Id: Makefile,v 1.1.1.1 2007-08-03 18:52:22 $
23
24LDFLAGS		:= -m elf_x86_64
25OBJCOPYFLAGS	:= -O binary -R .note -R .comment -S
26LDFLAGS_vmlinux :=
27CHECKFLAGS      += -D__x86_64__ -m64
28
29cflags-y	:=
30cflags-kernel-y	:=
31cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8)
32cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona)
33# gcc doesn't support -march=core2 yet as of gcc 4.3, but I hope it
34# will eventually. Use -mtune=generic as fallback
35cflags-$(CONFIG_MCORE2) += \
36	$(call cc-option,-march=core2,$(call cc-option,-mtune=generic))
37cflags-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=generic)
38
39cflags-y += -m64
40cflags-y += -mno-red-zone
41cflags-y += -mcmodel=kernel
42cflags-y += -pipe
43cflags-y += -Wno-sign-compare
44cflags-y += -fno-asynchronous-unwind-tables
45ifneq ($(CONFIG_DEBUG_INFO),y)
46# -fweb shrinks the kernel a bit, but the difference is very small
47# it also messes up debugging, so don't use it for now.
48#cflags-y += $(call cc-option,-fweb)
49endif
50# -funit-at-a-time shrinks the kernel .text considerably
51# unfortunately it makes reading oopses harder.
52cflags-y += $(call cc-option,-funit-at-a-time)
53# prevent gcc from generating any FP code by mistake
54cflags-y += $(call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,)
55# this works around some issues with generating unwind tables in older gccs
56# newer gccs do it by default
57cflags-y += -maccumulate-outgoing-args
58
59# do binutils support CFI?
60cflags-y += $(call as-instr,.cfi_startproc\n.cfi_endproc,-DCONFIG_AS_CFI=1,)
61AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_endproc,-DCONFIG_AS_CFI=1,)
62
63# is .cfi_signal_frame supported too?
64cflags-y += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,)
65AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,)
66
67cflags-$(CONFIG_CC_STACKPROTECTOR) += $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-x86_64-has-stack-protector.sh "$(CC)" -fstack-protector )
68cflags-$(CONFIG_CC_STACKPROTECTOR_ALL) += $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-x86_64-has-stack-protector.sh "$(CC)" -fstack-protector-all )
69
70CFLAGS += $(cflags-y)
71CFLAGS_KERNEL += $(cflags-kernel-y)
72AFLAGS += -m64
73
74head-y := arch/x86_64/kernel/head.o arch/x86_64/kernel/head64.o arch/x86_64/kernel/init_task.o
75
76libs-y 					+= arch/x86_64/lib/
77core-y					+= arch/x86_64/kernel/ \
78					   arch/x86_64/mm/ \
79					   arch/x86_64/crypto/
80core-$(CONFIG_IA32_EMULATION)		+= arch/x86_64/ia32/
81drivers-$(CONFIG_PCI)			+= arch/x86_64/pci/
82drivers-$(CONFIG_OPROFILE)		+= arch/x86_64/oprofile/
83
84boot := arch/x86_64/boot
85
86PHONY += bzImage bzlilo install archmrproper \
87	 fdimage fdimage144 fdimage288 isoimage archclean
88
89#Default target when executing "make"
90all: bzImage
91
92BOOTIMAGE                     := arch/x86_64/boot/bzImage
93KBUILD_IMAGE                  := $(BOOTIMAGE)
94
95bzImage: vmlinux
96	$(Q)$(MAKE) $(build)=$(boot) $(BOOTIMAGE)
97
98bzlilo: vmlinux
99	$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) zlilo
100
101bzdisk: vmlinux
102	$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) zdisk
103
104fdimage fdimage144 fdimage288 isoimage: vmlinux
105	$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@
106
107install:
108	$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@ 
109
110archclean:
111	$(Q)$(MAKE) $(clean)=$(boot)
112
113define archhelp
114  echo  '* bzImage	- Compressed kernel image (arch/$(ARCH)/boot/bzImage)'
115  echo  '  install	- Install kernel using'
116  echo  '		   (your) ~/bin/installkernel or'
117  echo  '		   (distribution) /sbin/installkernel or'
118  echo  '		   install to $$(INSTALL_PATH) and run lilo'
119  echo  '  bzdisk       - Create a boot floppy in /dev/fd0'
120  echo  '  fdimage      - Create a boot floppy image'
121  echo  '  isoimage     - Create a boot CD-ROM image'
122endef
123
124CLEAN_FILES += arch/$(ARCH)/boot/fdimage \
125	       arch/$(ARCH)/boot/image.iso \
126	       arch/$(ARCH)/boot/mtools.conf
127