tree a1d64dd3c6da8726cb74bb206d4da15228cfdae2
parent 7f73bafc4630a450ebe8b021efa14781ffd992b1
author Greg Ungerer <gerg@uclinux.org> 1320988388 +1000
committer Greg Ungerer <gerg@uclinux.org> 1324727277 +1000

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>