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Commit 53644087 authored by Paul Mundt's avatar Paul Mundt
Browse files

sh: Explicit endian selection support. 



Previously big endian was simply assumed if little endian was
not set, which led to some cflags ordering issues. There's not
much point to not having a big endian option, so shove one in
a choice and wire it up in the Makefile.

This lets us clean up some of the cflags ordering while we're
at it.

Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent 52e27782

arch/sh/Kconfig

+12 −4
Original line number Diff line number Diff line
@@ -294,12 +294,20 @@ config CF_BASE_ADDR 


menu "Processor features"



config CPU_LITTLE_ENDIAN

	bool "Little Endian"

choice

	prompt "Endianess selection" 

	default CPU_LITTLE_ENDIAN

	help

	  Some SuperH machines can be configured for either little or big

	  endian byte order. These modes require different kernels. Say Y if

	  your machine is little endian, N if it's a big endian machine.

	  endian byte order. These modes require different kernels.



config CPU_LITTLE_ENDIAN

	bool "Little Endian"



config CPU_BIG_ENDIAN

	bool "Big Endian"



endchoice



config SH_FPU

	bool "FPU support"

arch/sh/Makefile

+9 −10
Original line number Diff line number Diff line
@@ -13,10 +13,6 @@ 
# for "archclean" and "archdep" for cleaning up and making dependencies for

# this architecture

#



cflags-y				:= -mb

cflags-$(CONFIG_CPU_LITTLE_ENDIAN)	:= -ml



isa-y					:= any

isa-$(CONFIG_SH_DSP)			:= sh

isa-$(CONFIG_CPU_SH2)			:= sh2
@@ -38,13 +34,16 @@ isa-y := $(isa-y)-nofpu 
endif

endif



cflags-y	+= $(call as-option,-Wa$(comma)-isa=$(isa-y),)



cflags-$(CONFIG_CPU_SH2)		+= -m2

cflags-$(CONFIG_CPU_SH3)		+= -m3

cflags-$(CONFIG_CPU_SH4)		+= -m4 \

cflags-$(CONFIG_CPU_SH2)		:= -m2

cflags-$(CONFIG_CPU_SH3)		:= -m3

cflags-$(CONFIG_CPU_SH4)		:= -m4 \

	$(call cc-option,-mno-implicit-fp,-m4-nofpu)

cflags-$(CONFIG_CPU_SH4A)		+= $(call cc-option,-m4a-nofpu,)

cflags-$(CONFIG_CPU_SH4A)		:= -m4a $(call cc-option,-m4a-nofpu,)



cflags-$(CONFIG_CPU_BIG_ENDIAN)		+= -mb

cflags-$(CONFIG_CPU_LITTLE_ENDIAN)	+= -ml



cflags-y	+= $(call as-option,-Wa$(comma)-isa=$(isa-y),)



cflags-$(CONFIG_SH_DSP)			+= -Wa,-dsp

cflags-$(CONFIG_SH_KGDB)		+= -g