arch/x86/Makefile_64

   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 1.31 2002/03/22 15:56:07 ak Exp $
  23
  24 # BITS is used as extension for files which are available in a 32 bit
  25 # and a 64 bit version to simplify shared Makefiles.
  26 # e.g.: obj-y += foo_$(BITS).o
  27 BITS := 64
  28 export BITS
  29
  30 LDFLAGS         := -m elf_x86_64
  31 OBJCOPYFLAGS    := -O binary -R .note -R .comment -S
  32 LDFLAGS_vmlinux :=
  33 CHECKFLAGS      += -D__x86_64__ -m64
  34
  35 cflags-y        :=
  36 cflags-kernel-y :=
  37 cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8)
  38 cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona)
  39 # gcc doesn't support -march=core2 yet as of gcc 4.3, but I hope it
  40 # will eventually. Use -mtune=generic as fallback
  41 cflags-$(CONFIG_MCORE2) += \
  42         $(call cc-option,-march=core2,$(call cc-option,-mtune=generic))
  43 cflags-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=generic)
  44
  45 cflags-y += -m64
  46 cflags-y += -mno-red-zone
  47 cflags-y += -mcmodel=kernel
  48 cflags-y += -pipe
  49 cflags-y += -Wno-sign-compare
  50 cflags-y += -fno-asynchronous-unwind-tables
  51 ifneq ($(CONFIG_DEBUG_INFO),y)
  52 # -fweb shrinks the kernel a bit, but the difference is very small
  53 # it also messes up debugging, so don't use it for now.
  54 #cflags-y += $(call cc-option,-fweb)
  55 endif
  56 # -funit-at-a-time shrinks the kernel .text considerably
  57 # unfortunately it makes reading oopses harder.
  58 cflags-y += $(call cc-option,-funit-at-a-time)
  59 # prevent gcc from generating any FP code by mistake
  60 cflags-y += $(call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,)
  61 # this works around some issues with generating unwind tables in older gccs
  62 # newer gccs do it by default
  63 cflags-y += -maccumulate-outgoing-args
  64
  65 # do binutils support CFI?
  66 cflags-y += $(call as-instr,.cfi_startproc\n.cfi_rel_offset rsp${comma}0\n.cfi_endproc,-DCONFIG_AS_CFI=1,)
  67 KBUILD_AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_rel_offset rsp${comma}0\n.cfi_endproc,-DCONFIG_AS_CFI=1,)
  68
  69 # is .cfi_signal_frame supported too?
  70 cflags-y += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,)
  71 KBUILD_AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,)
  72
  73 cflags-$(CONFIG_CC_STACKPROTECTOR) += $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-x86_64-has-stack-protector.sh "$(CC)" -fstack-protector )
  74 cflags-$(CONFIG_CC_STACKPROTECTOR_ALL) += $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-x86_64-has-stack-protector.sh "$(CC)" -fstack-protector-all )
  75
  76 KBUILD_CFLAGS += $(cflags-y)
  77 CFLAGS_KERNEL += $(cflags-kernel-y)
  78 KBUILD_AFLAGS += -m64
  79
  80 head-y := arch/x86/kernel/head_64.o arch/x86/kernel/head64.o arch/x86/kernel/init_task.o
  81
  82 libs-y                                  += arch/x86/lib/
  83 core-y                                  += arch/x86/kernel/ \
  84                                            arch/x86/mm/ \
  85                                            arch/x86/crypto/ \
  86                                            arch/x86/vdso/
  87 core-$(CONFIG_IA32_EMULATION)           += arch/x86/ia32/
  88 drivers-$(CONFIG_PCI)                   += arch/x86/pci/
  89 drivers-$(CONFIG_OPROFILE)              += arch/x86/oprofile/
  90
  91 boot := arch/x86/boot
  92
  93 PHONY += bzImage bzlilo install archmrproper \
  94          fdimage fdimage144 fdimage288 isoimage archclean
  95
  96 #Default target when executing "make"
  97 all: bzImage
  98
  99 BOOTIMAGE                     := arch/x86/boot/bzImage
 100 KBUILD_IMAGE                  := $(BOOTIMAGE)
 101
 102 bzImage: vmlinux
 103         $(Q)$(MAKE) $(build)=$(boot) $(BOOTIMAGE)
 104         $(Q)mkdir -p $(objtree)/arch/x86_64/boot
 105         $(Q)ln -fsn ../../x86/boot/bzImage $(objtree)/arch/x86_64/boot/bzImage
 106
 107 bzlilo: vmlinux
 108         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) zlilo
 109
 110 bzdisk: vmlinux
 111         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) zdisk
 112
 113 fdimage fdimage144 fdimage288 isoimage: vmlinux
 114         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@
 115
 116 install: vdso_install
 117         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@
 118
 119 vdso_install:
 120 ifeq ($(CONFIG_IA32_EMULATION),y)
 121         $(Q)$(MAKE) $(build)=arch/x86/ia32 $@
 122 endif
 123         $(Q)$(MAKE) $(build)=arch/x86/vdso $@
 124
 125 archclean:
 126         $(Q)rm -rf $(objtree)/arch/x86_64/boot
 127         $(Q)$(MAKE) $(clean)=$(boot)
 128
 129 define archhelp
 130   echo  '* bzImage      - Compressed kernel image (arch/x86/boot/bzImage)'
 131   echo  '  install      - Install kernel using'
 132   echo  '                  (your) ~/bin/installkernel or'
 133   echo  '                  (distribution) /sbin/installkernel or'
 134   echo  '                  install to $$(INSTALL_PATH) and run lilo'
 135   echo  '  bzdisk       - Create a boot floppy in /dev/fd0'
 136   echo  '  fdimage      - Create a boot floppy image'
 137   echo  '  isoimage     - Create a boot CD-ROM image'
 138 endef
 139
 140 CLEAN_FILES += arch/x86/boot/fdimage \
 141                arch/x86/boot/image.iso \
 142                arch/x86/boot/mtools.conf
 143
 144