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