[PATCH v2] ARM: Use udiv/sdiv for __aeabi_{u}idiv library functions

On 11/10/13 23:46, Uwe Kleine-K?nig wrote:

Hello,

On Fri, Nov 08, 2013 at 03:00:32PM -0800, Stephen Boyd wrote:

quoted

diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile
index bd454b0..38621729 100644
--- a/arch/arm/lib/Makefile
+++ b/arch/arm/lib/Makefile

@@ -15,6 +15,12 @@ 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

CPU_V7M could make use of that, too.
(If you follow Nico's advice to use runtime patching I cannot test it
for you on v7-M though as my machine has to use an XIP kernel.)

It already is runtime patching so I suspect you won't be able to test it
anyway. I suppose we need another config like MIGHT_HAVE_IDIV or
something that both v7 and v7M select?

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