arch/x86_64/Makefile

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