From: Greg Ungerer <gerg@uclinux.org>
Date: Fri, 11 Nov 2011 05:13:08 +0000 (+1000)
Subject: m68k: handle presence of 64bit mul/div instructions cleanly
X-Git-Tag: v3.3-rc1~180^2~42
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=84f3fb7a2aadeda3c0a34e61591a8eccf5e367b4;p=pandora-kernel.git

m68k: handle presence of 64bit mul/div instructions cleanly

The traditional 68000 processors and the newer reduced instruction set
ColdFire processors do not support the 32*32->64 multiply or the 64/32->32
divide instructions. This is not a difference based on the presence of
a hardware MMU or not.

Create a new config symbol to mark that a CPU type doesn't support the
longer multiply/divide instructions. Use this then as a basis for using
the fast 64bit based divide (in div64.h) and for linking in the extra
libgcc functions that may be required (mulsi3, divsi3, etc).

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
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