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xtensa: move CONFIG_CPU_*_ENDIAN defines to Kconfig

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Move the definition of CONFIG_CPU_*_ENDIAN to Kconfig, the best place
for CONFIG options.

I slightly simplified the test code. You can use the -P option to suppress
linemarker generation. The grep command is unneeded.

  $ echo __XTENSA_EB__ | xtensa-linux-gcc -E -
  # 1 "<stdin>"
  # 1 "<built-in>"
  # 1 "<command-line>"
  # 1 "<stdin>"
  1

  $ echo __XTENSA_EB__ | xtensa-linux-gcc -E -P -
  1

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Message-Id: <20210313122342.69995-1-masahiroy@kernel.org>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
This commit is contained in:
Masahiro Yamada 2021-03-13 21:23:41 +09:00 committed by Max Filippov
parent 9aa44cd2c2
commit c425c546c0
5 changed files with 9 additions and 22 deletions
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6
arch/xtensa/Kconfig
View file

@ -84,6 +84,12 @@ config KASAN_SHADOW_OFFSET
hex
default 0x6e400000
config CPU_BIG_ENDIAN
def_bool $(success,test "$(shell,echo __XTENSA_EB__ | $(CC) -E -P -)" = 1)
config CPU_LITTLE_ENDIAN
def_bool !CPU_BIG_ENDIAN
menu "Processor type and features"
choice

9
arch/xtensa/Makefile
View file

@ -52,14 +52,7 @@ ifneq ($(CONFIG_LD_NO_RELAX),)
KBUILD_LDFLAGS := --no-relax
endif
ifeq ($(shell echo __XTENSA_EB__ | $(CC) -E - | grep -v "\#"),1)
CHECKFLAGS += -D__XTENSA_EB__
KBUILD_CPPFLAGS += -DCONFIG_CPU_BIG_ENDIAN
endif
ifeq ($(shell echo __XTENSA_EL__ | $(CC) -E - | grep -v "\#"),1)
CHECKFLAGS += -D__XTENSA_EL__
KBUILD_CPPFLAGS += -DCONFIG_CPU_LITTLE_ENDIAN
endif
CHECKFLAGS += -D$(if $(CONFIG_CPU_BIG_ENDIAN),__XTENSA_EB__,__XTENSA_EL__)
vardirs := $(patsubst %,arch/xtensa/variants/%/,$(variant-y))
plfdirs := $(patsubst %,arch/xtensa/platforms/%/,$(platform-y))

4
arch/xtensa/boot/Makefile
View file

@ -12,10 +12,6 @@
KBUILD_CFLAGS += -fno-builtin -Iarch/$(ARCH)/boot/include
HOSTFLAGS += -Iarch/$(ARCH)/boot/include
BIG_ENDIAN := $(shell echo __XTENSA_EB__ | $(CC) -E - | grep -v "\#")
export BIG_ENDIAN
subdir-y := lib
targets += vmlinux.bin vmlinux.bin.gz
targets += uImage xipImage

6
arch/xtensa/boot/boot-elf/Makefile
View file

@ -4,11 +4,7 @@
# for more details.
#
ifeq ($(BIG_ENDIAN),1)
OBJCOPY_ARGS := -O elf32-xtensa-be
else
OBJCOPY_ARGS := -O elf32-xtensa-le
endif
OBJCOPY_ARGS := -O $(if $(CONFIG_CPU_BIG_ENDIAN),elf32-xtensa-be,elf32-xtensa-le)
export OBJCOPY_ARGS
export CPPFLAGS_boot.lds += -P -C

6
arch/xtensa/boot/boot-redboot/Makefile
View file

@ -4,11 +4,7 @@
# for more details.
#
ifeq ($(BIG_ENDIAN),1)
OBJCOPY_ARGS := -O elf32-xtensa-be
else
OBJCOPY_ARGS := -O elf32-xtensa-le
endif
OBJCOPY_ARGS := -O $(if $(CONFIG_CPU_BIG_ENDIAN),elf32-xtensa-be,elf32-xtensa-le)
LD_ARGS = -T $(srctree)/$(obj)/boot.ld