linux_dsm_epyc7002/arch/m68k/lib/Makefile
Greg Ungerer 84f3fb7a2a 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>
2011-12-24 21:47:57 +10:00

17 lines
350 B
Makefile

#
# Makefile for m68k-specific library files..
#
lib-y := ashldi3.o ashrdi3.o lshrdi3.o muldi3.o \
memcpy.o memset.o memmove.o
lib-$(CONFIG_MMU) += string.o uaccess.o
lib-$(CONFIG_CPU_HAS_NO_MULDIV64) += mulsi3.o divsi3.o udivsi3.o
lib-$(CONFIG_CPU_HAS_NO_MULDIV64) += modsi3.o umodsi3.o
ifndef CONFIG_GENERIC_CSUM
lib-y += checksum.o
endif