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#
# x86_64/Makefile
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies. Remember to do have actions
# for "archclean" and "archdep" for cleaning up and making dependencies for
# this architecture
#
# This file is subject to the terms and conditions of the GNU General Public
# License. See the file "COPYING" in the main directory of this archive
# for more details.
#
# Copyright (C) 1994 by Linus Torvalds
#
# 19990713 Artur Skawina <skawina@geocities.com>
# Added '-march' and '-mpreferred-stack-boundary' support
# 20000913 Pavel Machek <pavel@suse.cz>
# Converted for x86_64 architecture
# 20010105 Andi Kleen, add IA32 compiler.
# ....and later removed it again....
#
# $Id: Makefile,v 1.31 2002/03/22 15:56:07 ak Exp $
LDFLAGS := -m elf_x86_64
OBJCOPYFLAGS := -O binary -R .note -R .comment -S
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LDFLAGS_vmlinux :=
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CHECKFLAGS += -D__x86_64__ -m64
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cflags-y :=
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cflags-kernel-y :=
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cflags-$(CONFIG_MK8) += $( call cc-option,-march= k8)
cflags-$(CONFIG_MPSC) += $( call cc-option,-march= nocona)
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# gcc doesn't support -march=core2 yet as of gcc 4.3, but I hope it
# will eventually. Use -mtune=generic as fallback
cflags-$(CONFIG_MCORE2) += \
$( call cc-option,-march= core2,$( call cc-option,-mtune= generic) )
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cflags-$(CONFIG_GENERIC_CPU) += $( call cc-option,-mtune= generic)
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cflags-y += -m64
cflags-y += -mno-red-zone
cflags-y += -mcmodel= kernel
cflags-y += -pipe
cflags-y += -Wno-sign-compare
cflags-y += -fno-asynchronous-unwind-tables
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i f n e q ( $( CONFIG_DEBUG_INFO ) , y )
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# -fweb shrinks the kernel a bit, but the difference is very small
# it also messes up debugging, so don't use it for now.
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#cflags-y += $(call cc-option,-fweb)
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e n d i f
# -funit-at-a-time shrinks the kernel .text considerably
# unfortunately it makes reading oopses harder.
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cflags-y += $( call cc-option,-funit-at-a-time)
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# prevent gcc from generating any FP code by mistake
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cflags-y += $( call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,)
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# this works around some issues with generating unwind tables in older gccs
# newer gccs do it by default
cflags-y += -maccumulate-outgoing-args
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# do binutils support CFI?
cflags-y += $( call as-instr,.cfi_startproc\n .cfi_endproc,-DCONFIG_AS_CFI= 1,)
AFLAGS += $( call as-instr,.cfi_startproc\n .cfi_endproc,-DCONFIG_AS_CFI= 1,)
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# is .cfi_signal_frame supported too?
cflags-y += $( call as-instr,.cfi_startproc\n .cfi_signal_frame\n .cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME= 1,)
AFLAGS += $( call as-instr,.cfi_startproc\n .cfi_signal_frame\n .cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME= 1,)
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cflags-$(CONFIG_CC_STACKPROTECTOR) += $( shell $( CONFIG_SHELL) $( srctree) /scripts/gcc-x86_64-has-stack-protector.sh " $( CC) " -fstack-protector )
cflags-$(CONFIG_CC_STACKPROTECTOR_ALL) += $( shell $( CONFIG_SHELL) $( srctree) /scripts/gcc-x86_64-has-stack-protector.sh " $( CC) " -fstack-protector-all )
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CFLAGS += $( cflags-y)
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CFLAGS_KERNEL += $( cflags-kernel-y)
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AFLAGS += -m64
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head-y := arch/x86_64/kernel/head.o arch/x86_64/kernel/head64.o arch/x86_64/kernel/init_task.o
libs-y += arch/x86_64/lib/
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core-y += arch/x86_64/kernel/ \
arch/x86_64/mm/ \
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arch/x86_64/crypto/ \
arch/x86_64/vdso/
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core-$(CONFIG_IA32_EMULATION) += arch/x86_64/ia32/
drivers-$(CONFIG_PCI) += arch/x86_64/pci/
drivers-$(CONFIG_OPROFILE) += arch/x86_64/oprofile/
boot := arch/x86_64/boot
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PHONY += bzImage bzlilo install archmrproper \
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fdimage fdimage144 fdimage288 isoimage archclean
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#Default target when executing "make"
all : bzImage
BOOTIMAGE := arch/x86_64/boot/bzImage
KBUILD_IMAGE := $( BOOTIMAGE)
bzImage : vmlinux
$( Q) $( MAKE) $( build) = $( boot) $( BOOTIMAGE)
bzlilo : vmlinux
$( Q) $( MAKE) $( build) = $( boot) BOOTIMAGE = $( BOOTIMAGE) zlilo
bzdisk : vmlinux
$( Q) $( MAKE) $( build) = $( boot) BOOTIMAGE = $( BOOTIMAGE) zdisk
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fdimage fdimage144 fdimage288 isoimage : vmlinux
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$( Q) $( MAKE) $( build) = $( boot) BOOTIMAGE = $( BOOTIMAGE) $@
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install :
$( Q) $( MAKE) $( build) = $( boot) BOOTIMAGE = $( BOOTIMAGE) $@
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archclean :
$( Q) $( MAKE) $( clean) = $( boot)
d e f i n e a r c h h e l p
echo '* bzImage - Compressed kernel image (arch/$(ARCH)/boot/bzImage)'
echo ' install - Install kernel using'
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echo ' (your) ~/bin/installkernel or'
echo ' (distribution) /sbin/installkernel or'
echo ' install to $$(INSTALL_PATH) and run lilo'
echo ' bzdisk - Create a boot floppy in /dev/fd0'
echo ' fdimage - Create a boot floppy image'
echo ' isoimage - Create a boot CD-ROM image'
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e n d e f
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CLEAN_FILES += arch/$( ARCH) /boot/fdimage \
arch/$( ARCH) /boot/image.iso \
arch/$( ARCH) /boot/mtools.conf
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