diff options
| -rw-r--r-- | arch/sh/Makefile | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/arch/sh/Makefile b/arch/sh/Makefile index 3d211aa33cd..97ac58682d0 100644 --- a/arch/sh/Makefile +++ b/arch/sh/Makefile @@ -34,6 +34,8 @@ isa-y := $(isa-y)-nofpu endif endif +isa-y := $(isa-y)-up + cflags-$(CONFIG_CPU_SH2) := $(call cc-option,-m2,) cflags-$(CONFIG_CPU_SH2A) += $(call cc-option,-m2a,) \ $(call cc-option,-m2a-nofpu,) @@ -46,7 +48,20 @@ cflags-$(CONFIG_CPU_SH4A) += $(call cc-option,-m4a,) \ cflags-$(CONFIG_CPU_BIG_ENDIAN) += -mb cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -ml -cflags-y += $(call as-option,-Wa$(comma)-isa=$(isa-y),) -ffreestanding +# +# -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) + +cflags-y += $(isaflags-y) -ffreestanding cflags-$(CONFIG_MORE_COMPILE_OPTIONS) += \ $(shell echo $(CONFIG_COMPILE_OPTIONS) | sed -e 's/"//g') |