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authorDavid Woodhouse <dwmw2@infradead.org>2007-10-13 14:43:54 +0100
committerDavid Woodhouse <dwmw2@infradead.org>2007-10-13 14:43:54 +0100
commitb160292cc216a50fd0cd386b0bda2cd48352c73b (patch)
treeef07cf98f91353ee4c9ec1e1ca7a2a5d9d4b538a /arch/sh/Makefile
parentb37bde147890c8fea8369a5a4e230dabdea4ebfb (diff)
parentbbf25010f1a6b761914430f5fca081ec8c7accd1 (diff)
Merge Linux 2.6.23
Diffstat (limited to 'arch/sh/Makefile')
-rw-r--r--arch/sh/Makefile17
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')