linux/arch/alpha/lib/Makefile
Linus Torvalds d4d016caa4 alpha: move __udiv_qrnnd library function to arch/alpha/lib/
We already had the implementation for __udiv_qrnnd (unsigned divide for
multi-precision arithmetic) as part of the alpha math emulation code.

But you can disable the math emulation code - even if you shouldn't -
and then the MPI code that actually wants this functionality (and is
needed by various crypto functions) will fail to build.

So move the extended-precision divide code to be a regular library
function, just like all the regular division code is.  That way ie is
available regardless of math-emulation.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-09-18 14:45:48 -07:00

62 lines
1.6 KiB
Makefile

# SPDX-License-Identifier: GPL-2.0
#
# Makefile for alpha-specific library files..
#
asflags-y := $(KBUILD_CFLAGS)
ccflags-y := -Werror
# Many of these routines have implementations tuned for ev6.
# Choose them iff we're targeting ev6 specifically.
ev6-$(CONFIG_ALPHA_EV6) := ev6-
# Several make use of the cttz instruction introduced in ev67.
ev67-$(CONFIG_ALPHA_EV67) := ev67-
lib-y = __divqu.o __remqu.o __divlu.o __remlu.o \
udiv-qrnnd.o \
udelay.o \
$(ev6-y)memset.o \
$(ev6-y)memcpy.o \
memmove.o \
checksum.o \
csum_partial_copy.o \
$(ev67-y)strlen.o \
stycpy.o \
styncpy.o \
$(ev67-y)strchr.o \
$(ev67-y)strrchr.o \
$(ev6-y)memchr.o \
$(ev6-y)copy_user.o \
$(ev6-y)clear_user.o \
$(ev6-y)csum_ipv6_magic.o \
$(ev6-y)clear_page.o \
$(ev6-y)copy_page.o \
fpreg.o \
callback_srm.o srm_puts.o srm_printk.o \
fls.o
# The division routines are built from single source, with different defines.
AFLAGS___divqu.o = -DDIV
AFLAGS___remqu.o = -DREM
AFLAGS___divlu.o = -DDIV -DINTSIZE
AFLAGS___remlu.o = -DREM -DINTSIZE
$(addprefix $(obj)/,__divqu.o __remqu.o __divlu.o __remlu.o): \
$(src)/$(ev6-y)divide.S FORCE
$(call if_changed_rule,as_o_S)
# There are direct branches between {str*cpy,str*cat} and stx*cpy.
# Ensure the branches are within range by merging these objects.
LDFLAGS_stycpy.o := -r
LDFLAGS_styncpy.o := -r
$(obj)/stycpy.o: $(obj)/strcpy.o $(obj)/$(ev67-y)strcat.o \
$(obj)/$(ev6-y)stxcpy.o FORCE
$(call if_changed,ld)
$(obj)/styncpy.o: $(obj)/strncpy.o $(obj)/$(ev67-y)strncat.o \
$(obj)/$(ev6-y)stxncpy.o FORCE
$(call if_changed,ld)