Messages in this thread | | | Date | Thu, 7 Nov 2013 19:34:13 -0600 | Subject | Re: [PATCH] ARM: Use udiv/sdiv for __aeabi_{u}idiv library functions | From | Rob Herring <> |
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On Thu, Nov 7, 2013 at 1:20 PM, Stephen Boyd <sboyd@codeaurora.org> wrote: > If we're running on a v7 ARM CPU, detect if the CPU supports the > sdiv/udiv instructions and replace the signed and unsigned > division library functions with an sdiv/udiv instruction.
[snip]
> diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile > index bd454b0..6ed6496 100644 > --- a/arch/arm/lib/Makefile > +++ b/arch/arm/lib/Makefile > @@ -15,6 +15,9 @@ lib-y := backtrace.o changebit.o csumipv6.o csumpartial.o \ > io-readsb.o io-writesb.o io-readsl.o io-writesl.o \ > call_with_stack.o > > +lib-$(CONFIG_CPU_V7) += div-v7.o > +CFLAGS_div-v7.o := -march=armv7-a
Won't this fail to build if the compiler doesn't have armv7-a support. Perhaps we don't care about compilers that old.
Rob
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