dca99a38bc
The upcomming gcc 4.2 got a new option -mtune=generic to tune code for both common AMD and Intel CPUs. Use this option when available for generic kernels. On x86-64 it is used with CONFIG_GENERIC_CPU. On i386 it is enabled with CONFIG_X86_GENERIC. It won't affect the base line CPU support in any ways and also not the minimum supported CPU. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
108 lines
3.4 KiB
Makefile
108 lines
3.4 KiB
Makefile
#
|
|
# 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
|
|
LDFLAGS_vmlinux :=
|
|
|
|
CHECKFLAGS += -D__x86_64__ -m64
|
|
|
|
cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8)
|
|
cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona)
|
|
cflags-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=generic)
|
|
CFLAGS += $(cflags-y)
|
|
|
|
CFLAGS += -m64
|
|
CFLAGS += -mno-red-zone
|
|
CFLAGS += -mcmodel=kernel
|
|
CFLAGS += -pipe
|
|
# this makes reading assembly source easier, but produces worse code
|
|
# actually it makes the kernel smaller too.
|
|
CFLAGS += -fno-reorder-blocks
|
|
CFLAGS += -Wno-sign-compare
|
|
ifneq ($(CONFIG_UNWIND_INFO),y)
|
|
CFLAGS += -fno-asynchronous-unwind-tables
|
|
endif
|
|
ifneq ($(CONFIG_DEBUG_INFO),y)
|
|
# -fweb shrinks the kernel a bit, but the difference is very small
|
|
# it also messes up debugging, so don't use it for now.
|
|
#CFLAGS += $(call cc-option,-fweb)
|
|
endif
|
|
# -funit-at-a-time shrinks the kernel .text considerably
|
|
# unfortunately it makes reading oopses harder.
|
|
CFLAGS += $(call cc-option,-funit-at-a-time)
|
|
# prevent gcc from generating any FP code by mistake
|
|
CFLAGS += $(call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,)
|
|
|
|
AFLAGS += -m64
|
|
|
|
head-y := arch/x86_64/kernel/head.o arch/x86_64/kernel/head64.o arch/x86_64/kernel/init_task.o
|
|
|
|
libs-y += arch/x86_64/lib/
|
|
core-y += arch/x86_64/kernel/ \
|
|
arch/x86_64/mm/ \
|
|
arch/x86_64/crypto/
|
|
core-$(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
|
|
|
|
PHONY += bzImage bzlilo install archmrproper \
|
|
fdimage fdimage144 fdimage288 archclean
|
|
|
|
#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
|
|
|
|
fdimage fdimage144 fdimage288: vmlinux
|
|
$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@
|
|
|
|
install:
|
|
$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@
|
|
|
|
archclean:
|
|
$(Q)$(MAKE) $(clean)=$(boot)
|
|
|
|
define archhelp
|
|
echo '* bzImage - Compressed kernel image (arch/$(ARCH)/boot/bzImage)'
|
|
echo ' install - Install kernel using'
|
|
echo ' (your) ~/bin/installkernel or'
|
|
echo ' (distribution) /sbin/installkernel or'
|
|
echo ' install to $$(INSTALL_PATH) and run lilo'
|
|
endef
|
|
|
|
CLEAN_FILES += arch/$(ARCH)/boot/fdimage arch/$(ARCH)/boot/mtools.conf
|
|
|
|
|