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| author | Paul Mundt <lethal@linux-sh.org> | 2007-08-21 16:56:56 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2007-08-21 16:56:56 +0900 |
| commit | da2f5f7bf4a39f9613fc04d7030cffb63e435e1d (patch) | |
| tree | 6f650eb49cb3d308a28fdda38dc79ae82935c0ac /arch | |
| parent | 8eb891fc809b2300137bcd247025628c06c95a63 (diff) | |
| download | talos-obmc-linux-da2f5f7bf4a39f9613fc04d7030cffb63e435e1d.tar.gz talos-obmc-linux-da2f5f7bf4a39f9613fc04d7030cffb63e435e1d.zip | |
sh: Fix DSP opcode regression for SH3-DSP parts.
Older versions of binutils do not support -Wa,-isa= tuning, which is
something we rely on for enabling DSP opcode support on the newer
parts. SH3-DSP parts can still be handled with -Wa,-dsp even if the
newer parts require the newer versions of binutils for supporting the
new opcodes.
This was broken in -rc1 when the SH4AL-DSP support was being reworked,
and is needed to get SH3-DSP working with older toolchains again.
Reported-by: Markus Brunner <super.firetwister@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch')
| -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 3d211aa33cd8..97ac58682d0f 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') |
