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 # Fill in SRCARCH
  25 SRCARCH := x86
  26
  27 LDFLAGS         := -m elf_x86_64
  28 OBJCOPYFLAGS    := -O binary -R .note -R .comment -S
  29 LDFLAGS_vmlinux :=
  30 CHECKFLAGS      += -D__x86_64__ -m64
  31
  32 cflags-y        :=
  33 cflags-kernel-y :=
  34 cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8)
  35 cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona)
  36 # gcc doesn't support -march=core2 yet as of gcc 4.3, but I hope it
  37 # will eventually. Use -mtune=generic as fallback
  38 cflags-$(CONFIG_MCORE2) += \
  39         $(call cc-option,-march=core2,$(call cc-option,-mtune=generic))
  40 cflags-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=generic)
  41
  42 cflags-y += -m64
  43 cflags-y += -mno-red-zone
  44 cflags-y += -mcmodel=kernel
  45 cflags-y += -pipe
  46 cflags-y += -Wno-sign-compare
  47 cflags-y += -fno-asynchronous-unwind-tables
  48 ifneq ($(CONFIG_DEBUG_INFO),y)
  49 # -fweb shrinks the kernel a bit, but the difference is very small
  50 # it also messes up debugging, so don't use it for now.
  51 #cflags-y += $(call cc-option,-fweb)
  52 endif
  53 # -funit-at-a-time shrinks the kernel .text considerably
  54 # unfortunately it makes reading oopses harder.
  55 cflags-y += $(call cc-option,-funit-at-a-time)
  56 # prevent gcc from generating any FP code by mistake
  57 cflags-y += $(call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,)
  58 # this works around some issues with generating unwind tables in older gccs
  59 # newer gccs do it by default
  60 cflags-y += -maccumulate-outgoing-args
  61
  62 # do binutils support CFI?
  63 cflags-y += $(call as-instr,.cfi_startproc\n.cfi_rel_offset rsp${comma}0\n.cfi_endproc,-DCONFIG_AS_CFI=1,)
  64 AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_rel_offset rsp${comma}0\n.cfi_endproc,-DCONFIG_AS_CFI=1,)
  65
  66 # is .cfi_signal_frame supported too?
  67 cflags-y += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,)
  68 AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,)
  69
  70 cflags-$(CONFIG_CC_STACKPROTECTOR) += $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-x86_64-has-stack-protector.sh "$(CC)" -fstack-protector )
  71 cflags-$(CONFIG_CC_STACKPROTECTOR_ALL) += $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-x86_64-has-stack-protector.sh "$(CC)" -fstack-protector-all )
  72
  73 CFLAGS += $(cflags-y)
  74 CFLAGS_KERNEL += $(cflags-kernel-y)
  75 AFLAGS += -m64
  76
  77 head-y := arch/x86/kernel/head_64.o arch/x86/kernel/head64.o arch/x86/kernel/init_task_64.o
  78
  79 libs-y                                  += arch/x86/lib/
  80 core-y                                  += arch/x86/kernel/ \
  81                                            arch/x86/mm/ \
  82                                            arch/x86/crypto/ \
  83                                            arch/x86/vdso/
  84 core-$(CONFIG_IA32_EMULATION)           += arch/x86/ia32/
  85 drivers-$(CONFIG_PCI)                   += arch/x86/pci/
  86 drivers-$(CONFIG_OPROFILE)              += arch/x86/oprofile/
  87
  88 boot := arch/x86/boot
  89
  90 PHONY += bzImage bzlilo install archmrproper \
  91          fdimage fdimage144 fdimage288 isoimage archclean
  92
  93 #Default target when executing "make"
  94 all: bzImage
  95
  96 BOOTIMAGE                     := arch/x86/boot/bzImage
  97 KBUILD_IMAGE                  := $(BOOTIMAGE)
  98
  99 bzImage: vmlinux
 100         $(Q)mkdir -p $(objtree)/arch/x86_64/boot
 101         $(Q)ln -fsn $(objtree)/arch/x86/boot/bzImage $(objtree)/arch/x86_64/boot/bzImage
 102         $(Q)$(MAKE) $(build)=$(boot) $(BOOTIMAGE)
 103
 104 bzlilo: vmlinux
 105         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) zlilo
 106
 107 bzdisk: vmlinux
 108         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) zdisk
 109
 110 fdimage fdimage144 fdimage288 isoimage: vmlinux
 111         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@
 112
 113 install:
 114         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@
 115
 116 archclean:
 117         $(Q)rm -rf $(objtree)/arch/x86_64/boot
 118         $(Q)$(MAKE) $(clean)=$(boot)
 119
 120 define archhelp
 121   echo  '* bzImage      - Compressed kernel image (arch/$(ARCH)/boot/bzImage)'
 122   echo  '  install      - Install kernel using'
 123   echo  '                  (your) ~/bin/installkernel or'
 124   echo  '                  (distribution) /sbin/installkernel or'
 125   echo  '                  install to $$(INSTALL_PATH) and run lilo'
 126   echo  '  bzdisk       - Create a boot floppy in /dev/fd0'
 127   echo  '  fdimage      - Create a boot floppy image'
 128   echo  '  isoimage     - Create a boot CD-ROM image'
 129 endef
 130
 131 CLEAN_FILES += arch/$(ARCH)/boot/fdimage \
 132                arch/$(ARCH)/boot/image.iso \
 133                arch/$(ARCH)/boot/mtools.conf
 134
 135