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 archprepare:
  28         @mkdir -p ${objtree}/arch/x86/kernel
  29
  30
  31 LDFLAGS         := -m elf_x86_64
  32 OBJCOPYFLAGS    := -O binary -R .note -R .comment -S
  33 LDFLAGS_vmlinux :=
  34 CHECKFLAGS      += -D__x86_64__ -m64
  35
  36 cflags-y        :=
  37 cflags-kernel-y :=
  38 cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8)
  39 cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona)
  40 # gcc doesn't support -march=core2 yet as of gcc 4.3, but I hope it
  41 # will eventually. Use -mtune=generic as fallback
  42 cflags-$(CONFIG_MCORE2) += \
  43         $(call cc-option,-march=core2,$(call cc-option,-mtune=generic))
  44 cflags-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=generic)
  45
  46 cflags-y += -m64
  47 cflags-y += -mno-red-zone
  48 cflags-y += -mcmodel=kernel
  49 cflags-y += -pipe
  50 cflags-y += -Wno-sign-compare
  51 cflags-y += -fno-asynchronous-unwind-tables
  52 ifneq ($(CONFIG_DEBUG_INFO),y)
  53 # -fweb shrinks the kernel a bit, but the difference is very small
  54 # it also messes up debugging, so don't use it for now.
  55 #cflags-y += $(call cc-option,-fweb)
  56 endif
  57 # -funit-at-a-time shrinks the kernel .text considerably
  58 # unfortunately it makes reading oopses harder.
  59 cflags-y += $(call cc-option,-funit-at-a-time)
  60 # prevent gcc from generating any FP code by mistake
  61 cflags-y += $(call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,)
  62 # this works around some issues with generating unwind tables in older gccs
  63 # newer gccs do it by default
  64 cflags-y += -maccumulate-outgoing-args
  65
  66 # do binutils support CFI?
  67 cflags-y += $(call as-instr,.cfi_startproc\n.cfi_rel_offset rsp${comma}0\n.cfi_endproc,-DCONFIG_AS_CFI=1,)
  68 AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_rel_offset rsp${comma}0\n.cfi_endproc,-DCONFIG_AS_CFI=1,)
  69
  70 # is .cfi_signal_frame supported too?
  71 cflags-y += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,)
  72 AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,)
  73
  74 cflags-$(CONFIG_CC_STACKPROTECTOR) += $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-x86_64-has-stack-protector.sh "$(CC)" -fstack-protector )
  75 cflags-$(CONFIG_CC_STACKPROTECTOR_ALL) += $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-x86_64-has-stack-protector.sh "$(CC)" -fstack-protector-all )
  76
  77 CFLAGS += $(cflags-y)
  78 CFLAGS_KERNEL += $(cflags-kernel-y)
  79 AFLAGS += -m64
  80
  81 head-y := arch/x86/kernel/head_64.o arch/x86/kernel/head64.o arch/x86/kernel/init_task_64.o
  82
  83 libs-y                                  += arch/x86/lib/
  84 core-y                                  += arch/x86/kernel/ \
  85                                            arch/x86/mm/ \
  86                                            arch/x86/crypto/ \
  87                                            arch/x86/vdso/
  88 core-$(CONFIG_IA32_EMULATION)           += arch/x86/ia32/
  89 drivers-$(CONFIG_PCI)                   += arch/x86/pci/
  90 drivers-$(CONFIG_OPROFILE)              += arch/x86/oprofile/
  91
  92 boot := arch/x86/boot
  93
  94 PHONY += bzImage bzlilo install archmrproper \
  95          fdimage fdimage144 fdimage288 isoimage archclean
  96
  97 #Default target when executing "make"
  98 all: bzImage
  99
 100 BOOTIMAGE                     := arch/x86/boot/bzImage
 101 KBUILD_IMAGE                  := $(BOOTIMAGE)
 102
 103 bzImage: vmlinux
 104         $(Q)mkdir -p $(objtree)/arch/x86_64/boot
 105         $(Q)ln -fsn $(objtree)/arch/x86/boot/bzImage $(objtree)/arch/x86_64/boot/bzImage
 106         $(Q)$(MAKE) $(build)=$(boot) $(BOOTIMAGE)
 107
 108 bzlilo: vmlinux
 109         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) zlilo
 110
 111 bzdisk: vmlinux
 112         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) zdisk
 113
 114 fdimage fdimage144 fdimage288 isoimage: vmlinux
 115         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@
 116
 117 install:
 118         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@
 119
 120 archclean:
 121         $(Q)rm -rf $(objtree)/arch/x86_64/boot
 122         $(Q)$(MAKE) $(clean)=$(boot)
 123
 124 define archhelp
 125   echo  '* bzImage      - Compressed kernel image (arch/$(ARCH)/boot/bzImage)'
 126   echo  '  install      - Install kernel using'
 127   echo  '                  (your) ~/bin/installkernel or'
 128   echo  '                  (distribution) /sbin/installkernel or'
 129   echo  '                  install to $$(INSTALL_PATH) and run lilo'
 130   echo  '  bzdisk       - Create a boot floppy in /dev/fd0'
 131   echo  '  fdimage      - Create a boot floppy image'
 132   echo  '  isoimage     - Create a boot CD-ROM image'
 133 endef
 134
 135 CLEAN_FILES += arch/$(ARCH)/boot/fdimage \
 136                arch/$(ARCH)/boot/image.iso \
 137                arch/$(ARCH)/boot/mtools.conf
 138
 139