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x86: do not use $(ARCH) when not needed

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For x86 ARCH may say i386 or x86_64 and soon x86.
Rely on CONFIG_X64_32 to select between 32/64 or just
hardcode the value as appropriate.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
This commit is contained in:
Sam Ravnborg 2007-11-12 20:14:19 +01:00
parent 2a113281f5
commit d746d647f3
8 changed files with 30 additions and 18 deletions
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9
Makefile
View File

@ -197,8 +197,13 @@ CROSS_COMPILE ?=
UTS_MACHINE := $(ARCH)
SRCARCH := $(ARCH)
# for i386 and x86_64 we use SRCARCH equal to x86
SRCARCH := $(if $(filter x86_64 i386,$(SRCARCH)),x86,$(SRCARCH))
# Additional ARCH settings for x86
ifeq ($(ARCH),i386)
SRCARCH := x86
endif
ifeq ($(ARCH),x86_64)
SRCARCH := x86
endif
KCONFIG_CONFIG ?= .config

10
arch/x86/Makefile
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@ -1,12 +1,16 @@
# Unified Makefile for i386 and x86_64
# select defconfig based on actual architecture
KBUILD_DEFCONFIG := $(ARCH)_defconfig
ifeq ($(ARCH),x86)
KBUILD_DEFCONFIG := i386_defconfig
else
KBUILD_DEFCONFIG := $(ARCH)_defconfig
endif
# # No need to remake these files
# No need to remake these files
$(srctree)/arch/x86/Makefile%: ;
ifeq ($(ARCH),i386)
ifeq ($(CONFIG_X86_32),y)
include $(srctree)/arch/x86/Makefile_32
else
include $(srctree)/arch/x86/Makefile_64

8
arch/x86/Makefile_32
View File

@ -160,7 +160,7 @@ archclean:
$(Q)$(MAKE) $(clean)=arch/x86/boot
define archhelp
echo '* bzImage - Compressed kernel image (arch/$(ARCH)/boot/bzImage)'
echo '* bzImage - Compressed kernel image (arch/x86/boot/bzImage)'
echo ' install - Install kernel using'
echo ' (your) ~/bin/installkernel or'
echo ' (distribution) /sbin/installkernel or'
@ -170,6 +170,6 @@ define archhelp
echo ' isoimage - Create a boot CD-ROM image'
endef
CLEAN_FILES += arch/$(ARCH)/boot/fdimage \
arch/$(ARCH)/boot/image.iso \
arch/$(ARCH)/boot/mtools.conf
CLEAN_FILES += arch/x86/boot/fdimage \
arch/x86/boot/image.iso \
arch/x86/boot/mtools.conf

8
arch/x86/Makefile_64
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@ -127,7 +127,7 @@ archclean:
$(Q)$(MAKE) $(clean)=$(boot)
define archhelp
echo '* bzImage - Compressed kernel image (arch/$(ARCH)/boot/bzImage)'
echo '* bzImage - Compressed kernel image (arch/x86/boot/bzImage)'
echo ' install - Install kernel using'
echo ' (your) ~/bin/installkernel or'
echo ' (distribution) /sbin/installkernel or'
@ -137,8 +137,8 @@ define archhelp
echo ' isoimage - Create a boot CD-ROM image'
endef
CLEAN_FILES += arch/$(ARCH)/boot/fdimage \
arch/$(ARCH)/boot/image.iso \
arch/$(ARCH)/boot/mtools.conf
CLEAN_FILES += arch/x86/boot/fdimage \
arch/x86/boot/image.iso \
arch/x86/boot/mtools.conf

6
arch/x86/boot/Makefile
View File

@ -49,10 +49,10 @@ HOSTCFLAGS_build.o := $(LINUXINCLUDE)
# How to compile the 16-bit code. Note we always compile for -march=i386,
# that way we can complain to the user if the CPU is insufficient.
cflags-i386 :=
cflags-x86_64 := -m32
cflags-$(CONFIG_X86_32) :=
cflags-$(CONFIG_X86_64) := -m32
KBUILD_CFLAGS := $(LINUXINCLUDE) -g -Os -D_SETUP -D__KERNEL__ \
$(cflags-$(ARCH)) \
$(cflags-y) \
-Wall -Wstrict-prototypes \
-march=i386 -mregparm=3 \
-include $(srctree)/$(src)/code16gcc.h \

3
arch/x86/kernel/Makefile_32
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@ -3,6 +3,7 @@
#
extra-y := head_32.o init_task.o vmlinux.lds
CPPFLAGS_vmlinux.lds += -Ui386
obj-y := process_32.o signal_32.o entry_32.o traps_32.o irq_32.o \
ptrace_32.o time_32.o ioport_32.o ldt_32.o setup_32.o i8259_32.o sys_i386_32.o \
@ -60,7 +61,7 @@ quiet_cmd_syscall = SYSCALL $@
cmd_syscall = $(CC) -m elf_i386 -nostdlib $(SYSCFLAGS_$(@F)) \
-Wl,-T,$(filter-out FORCE,$^) -o $@
export CPPFLAGS_vsyscall_32.lds += -P -C -U$(ARCH)
export CPPFLAGS_vsyscall_32.lds += -P -C -Ui386
vsyscall-flags = -shared -s -Wl,-soname=linux-gate.so.1 \
$(call ld-option, -Wl$(comma)--hash-style=sysv)

2
arch/x86/kernel/Makefile_64
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@ -3,7 +3,9 @@
#
extra-y := head_64.o head64.o init_task.o vmlinux.lds
CPPFLAGS_vmlinux.lds += -Ux86_64
EXTRA_AFLAGS := -traditional
obj-y := process_64.o signal_64.o entry_64.o traps_64.o irq_64.o \
ptrace_64.o time_64.o ioport_64.o ldt_64.o setup_64.o i8259_64.o sys_x86_64.o \
x8664_ksyms_64.o i387_64.o syscall_64.o vsyscall_64.o \

2
arch/x86/vdso/Makefile
View File

@ -20,7 +20,7 @@ quiet_cmd_syscall = SYSCALL $@
cmd_syscall = $(CC) -m elf_x86_64 -nostdlib $(SYSCFLAGS_$(@F)) \
-Wl,-T,$(filter-out FORCE,$^) -o $@
export CPPFLAGS_vdso.lds += -P -C -U$(ARCH)
export CPPFLAGS_vdso.lds += -P -C
vdso-flags = -fPIC -shared -Wl,-soname=linux-vdso.so.1 \
$(call ld-option, -Wl$(comma)--hash-style=sysv) \