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linux-stable/arch/sh/Makefile
Paul Mundt 5dd614761f sh: Re-add support for best fit ISA tuning if none is available. 
This was removed in the libgcc integration, but there are still some
compilers that need this. We also relax the rules on the ISA tuning in
the cases where there are no matches for the CPU tuning and adopt the
-any default, which matches the intent of the isa-y target list. This
compensates for mismatches where binutils supports a wide array of
targets whilst the compiler is much more restricted.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-12-22 18:43:49 +09:00

238 lines
7.6 KiB
Makefile
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#
# arch/sh/Makefile
#
# Copyright (C) 1999 Kaz Kojima
# Copyright (C) 2002 - 2008 Paul Mundt
# Copyright (C) 2002 M. R. Brown
#
# 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.
#
isa-y := any
isa-$(CONFIG_SH_DSP) := sh
isa-$(CONFIG_CPU_SH2) := sh2
isa-$(CONFIG_CPU_SH2A) := sh2a
isa-$(CONFIG_CPU_SH3) := sh3
isa-$(CONFIG_CPU_SH4) := sh4
isa-$(CONFIG_CPU_SH4A) := sh4a
isa-$(CONFIG_CPU_SH4AL_DSP) := sh4al
isa-$(CONFIG_CPU_SH5) := shmedia
ifeq ($(CONFIG_SUPERH32),y)
isa-$(CONFIG_SH_DSP) := $(isa-y)-dsp
isa-y := $(isa-y)-up
endif
cflags-$(CONFIG_CPU_SH2) := $(call cc-option,-m2,)
cflags-$(CONFIG_CPU_SH2A) += $(call cc-option,-m2a,) \
$(call cc-option,-m2a-nofpu,)
cflags-$(CONFIG_CPU_SH3) := $(call cc-option,-m3,)
cflags-$(CONFIG_CPU_SH4) := $(call cc-option,-m4,) \
$(call cc-option,-mno-implicit-fp,-m4-nofpu)
cflags-$(CONFIG_CPU_SH4A) += $(call cc-option,-m4a,) \
$(call cc-option,-m4a-nofpu,)
cflags-$(CONFIG_CPU_SH4AL_DSP) += $(call cc-option,-m4al,)
cflags-$(CONFIG_CPU_SH5) := $(call cc-option,-m5-32media-nofpu,)
ifeq ($(cflags-y),)
#
# In the case where we are stuck with a compiler that has been uselessly
# restricted to a particular ISA, a favourite default of newer GCCs when
# extensive multilib targets are not provided, ensure we get the best fit
# regarding FP generation. This is intentionally stupid (albeit many
# orders of magnitude less than GCC's default behaviour), as anything
# with a large number of multilib targets better have been built
# correctly for the target in mind.
#
cflags-y += $(shell $(CC) $(KBUILD_CFLAGS) -print-multi-lib | \
grep nofpu | sed q | sed -e 's/^/-/;s/;.*$$//')
# At this point, anything goes.
isaflags-y := $(call as-option,-Wa$(comma)-isa=any,)
else
#
# -Wa,-isa= tuning implies -Wa,-dsp for the versions of binutils that
# support it, while -Wa,-dsp by itself limits the range of usable opcodes
# on certain CPU subtypes. Try the ISA variant first, and if that fails,
# fall back on -Wa,-dsp for the old binutils versions. Even without DSP
# opcodes, we always want the best ISA tuning the version of binutils
# will provide.
#
isaflags-y := $(call as-option,-Wa$(comma)-isa=$(isa-y),)
isaflags-$(CONFIG_SH_DSP) := \
$(call as-option,-Wa$(comma)-isa=$(isa-y),-Wa$(comma)-dsp)
endif
cflags-$(CONFIG_CPU_BIG_ENDIAN) += -mb
cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -ml
cflags-y += $(call cc-option,-mno-fdpic)
cflags-y += $(isaflags-y) -ffreestanding
cflags-$(CONFIG_MORE_COMPILE_OPTIONS) += \
$(shell echo $(CONFIG_COMPILE_OPTIONS) | sed -e 's/"//g')
OBJCOPYFLAGS := -O binary -R .note -R .note.gnu.build-id -R .comment \
-R .stab -R .stabstr -S
# Give the various platforms the opportunity to set default image types
defaultimage-$(CONFIG_SUPERH32) := zImage
defaultimage-$(CONFIG_SH_SH7785LCR) := uImage
defaultimage-$(CONFIG_SH_RSK7203) := uImage
defaultimage-$(CONFIG_SH_7206_SOLUTION_ENGINE) := vmlinux
defaultimage-$(CONFIG_SH_7619_SOLUTION_ENGINE) := vmlinux
# Set some sensible Kbuild defaults
KBUILD_DEFCONFIG := shx3_defconfig
KBUILD_IMAGE := $(defaultimage-y)
#
# Choosing incompatible machines durings configuration will result in
# error messages during linking.
#
ifdef CONFIG_SUPERH32
UTS_MACHINE := sh
LDFLAGS_vmlinux += -e _stext
else
UTS_MACHINE := sh64
LDFLAGS_vmlinux += --defsym phys_stext=_stext-$(CONFIG_PAGE_OFFSET) \
--defsym phys_stext_shmedia=phys_stext+1 \
-e phys_stext_shmedia
endif
ifdef CONFIG_CPU_LITTLE_ENDIAN
LDFLAGS_vmlinux += --defsym 'jiffies=jiffies_64'
LDFLAGS += -EL
else
LDFLAGS_vmlinux += --defsym 'jiffies=jiffies_64+4'
LDFLAGS += -EB
endif
head-y := arch/sh/kernel/init_task.o
head-$(CONFIG_SUPERH32) += arch/sh/kernel/head_32.o
head-$(CONFIG_SUPERH64) += arch/sh/kernel/head_64.o
core-y += arch/sh/kernel/ arch/sh/mm/ arch/sh/boards/
core-$(CONFIG_SH_FPU_EMU) += arch/sh/math-emu/
# Mach groups
machdir-$(CONFIG_SOLUTION_ENGINE) += mach-se
machdir-$(CONFIG_SH_HP6XX) += mach-hp6xx
machdir-$(CONFIG_SH_DREAMCAST) += mach-dreamcast
machdir-$(CONFIG_SH_SH03) += mach-sh03
machdir-$(CONFIG_SH_SECUREEDGE5410) += mach-snapgear
machdir-$(CONFIG_SH_RTS7751R2D) += mach-r2d
machdir-$(CONFIG_SH_7751_SYSTEMH) += mach-systemh
machdir-$(CONFIG_SH_EDOSK7705) += mach-edosk7705
machdir-$(CONFIG_SH_HIGHLANDER) += mach-highlander
machdir-$(CONFIG_SH_MIGOR) += mach-migor
machdir-$(CONFIG_SH_SDK7780) += mach-sdk7780
machdir-$(CONFIG_SH_X3PROTO) += mach-x3proto
machdir-$(CONFIG_SH_SH7763RDP) += mach-sh7763rdp
machdir-$(CONFIG_SH_SH4202_MICRODEV) += mach-microdev
machdir-$(CONFIG_SH_LANDISK) += mach-landisk
machdir-$(CONFIG_SH_TITAN) += mach-titan
machdir-$(CONFIG_SH_LBOX_RE2) += mach-lboxre2
machdir-$(CONFIG_SH_CAYMAN) += mach-cayman
ifneq ($(machdir-y),)
core-y += $(addprefix arch/sh/boards/, \
$(filter-out ., $(patsubst %,%/,$(machdir-y))))
endif
# Common machine type headers. Not part of the arch/sh/boards/ hierarchy.
machdir-y += mach-common
# Companion chips
core-$(CONFIG_HD6446X_SERIES) += arch/sh/cchips/hd6446x/
#
# CPU header paths
#
# These are ordered by optimization level. A CPU family that is a subset
# of another (ie, SH-2A / SH-2), is picked up first, with increasing
# levels of genericness if nothing more suitable is situated in the
# hierarchy.
#
# As an example, in order of preference, SH-2A > SH-2 > common definitions.
#
cpuincdir-$(CONFIG_CPU_SH2A) += cpu-sh2a
cpuincdir-$(CONFIG_CPU_SH2) += cpu-sh2
cpuincdir-$(CONFIG_CPU_SH3) += cpu-sh3
cpuincdir-$(CONFIG_CPU_SH4) += cpu-sh4
cpuincdir-$(CONFIG_CPU_SH5) += cpu-sh5
cpuincdir-y += cpu-common # Must be last
drivers-y += arch/sh/drivers/
drivers-$(CONFIG_OPROFILE) += arch/sh/oprofile/
boot := arch/sh/boot
cflags-y += $(foreach d, $(cpuincdir-y), -Iarch/sh/include/$(d)) \
$(foreach d, $(machdir-y), -Iarch/sh/include/$(d))
KBUILD_CFLAGS += -pipe $(cflags-y)
KBUILD_CPPFLAGS += $(cflags-y)
KBUILD_AFLAGS += $(cflags-y)
LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
libs-$(CONFIG_SUPERH32) := arch/sh/lib/ $(libs-y)
libs-$(CONFIG_SUPERH64) := arch/sh/lib64/ $(libs-y) $(LIBGCC)
PHONY += maketools FORCE
maketools: include/linux/version.h FORCE
$(Q)$(MAKE) $(build)=arch/sh/tools include/asm-sh/machtypes.h
all: $(KBUILD_IMAGE)
zImage uImage uImage.srec vmlinux.srec: vmlinux
$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
compressed: zImage
archprepare: maketools arch/sh/lib64/syscalltab.h
archclean:
$(Q)$(MAKE) $(clean)=$(boot)
define archhelp
@echo '* zImage - Compressed kernel image'
@echo ' vmlinux.srec - Create an ELF S-record'
@echo ' uImage - Create a bootable image for U-Boot'
@echo ' uImage.srec - Create an S-record for U-Boot'
endef
define filechk_gen-syscalltab
(set -e; \
echo "/*"; \
echo " * DO NOT MODIFY."; \
echo " *"; \
echo " * This file was generated by arch/sh/Makefile"; \
echo " * Any changes will be reverted at build time."; \
echo " */"; \
echo ""; \
echo "#ifndef __SYSCALLTAB_H"; \
echo "#define __SYSCALLTAB_H"; \
echo ""; \
echo "#include <linux/kernel.h>"; \
echo ""; \
echo "struct syscall_info {"; \
echo " const char *name;"; \
echo "} syscall_info_table[] = {"; \
sed -e '/^.*\.long /!d;s// { "/;s/\(\([^/]*\)\/\)\{1\}.*/\2/; \
s/[ \t]*$$//g;s/$$/" },/;s/\("\)sys_/\1/g'; \
echo "};"; \
echo ""; \
echo "#define NUM_SYSCALL_INFO_ENTRIES ARRAY_SIZE(syscall_info_table)";\
echo ""; \
echo "#endif /* __SYSCALLTAB_H */" )
endef
arch/sh/lib64/syscalltab.h: arch/sh/kernel/syscalls_64.S
$(call filechk,gen-syscalltab)
CLEAN_FILES += arch/sh/lib64/syscalltab.h \
include/asm-sh/machtypes.h
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