[ARM PATCH] 1545/1: correct compiler flags for ARMv5TE/XScale

Patch from Nicolas Pitre

The -march=armv5te issue looks to be fixed in gcc-3.3.
Since gcc-3.3 is the only gcc version >= 3 that seems to correctly
compile kernels out of the box I think it would be reasonable to
apply this patch and no bother with older gcc versions.

Yet gcc-3.3 emits V5TE instructions only when -mcpu=xscale is used,
but that seems to have been fixed in current CVS so next gcc release
will use all available instructions properly with -march=armv5te.

arch/arm/Makefile

@@ -40,10 +40,7 @@ apcs-$(CONFIG_CPU_26)		:=-mapcs-26 -mcpu=arm3
 # Note that GCC does not numerically define an architecture version
 # macro, but instead defines a whole series of macros which makes
 # testing for a specific architecture or later rather impossible.
-#
-# Note - GCC does accept -march=armv5te, but someone messed up the assembler or the
-# gcc specs file - this needs fixing properly - ie in gcc and/or binutils.
-arch-$(CONFIG_CPU_32v5)		:=-D__LINUX_ARM_ARCH__=5 -march=armv5t
+arch-$(CONFIG_CPU_32v5)		:=-D__LINUX_ARM_ARCH__=5 -march=armv5te
 arch-$(CONFIG_CPU_32v4)		:=-D__LINUX_ARM_ARCH__=4 -march=armv4
 arch-$(CONFIG_CPU_32v3)		:=-D__LINUX_ARM_ARCH__=3 -march=armv3
 
@@ -56,7 +53,7 @@ tune-$(CONFIG_CPU_ARM922T)	:=-mtune=arm9tdmi
 tune-$(CONFIG_CPU_ARM926T)	:=-mtune=arm9tdmi
 tune-$(CONFIG_CPU_SA110)	:=-mtune=strongarm110
 tune-$(CONFIG_CPU_SA1100)	:=-mtune=strongarm1100
-tune-$(CONFIG_CPU_XSCALE)	:=-mtune=strongarm -Wa,-mxscale #-mtune=xscale
+tune-$(CONFIG_CPU_XSCALE)	:=-mtune=xscale
 
 # Force -mno-fpu to be passed to the assembler.  Some versions of gcc don't
 # do this with -msoft-float