mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 12:43:55 +08:00
9641c7cc5a
MMUless systems have only one address space for all threads, so both the usual access_ok() checks, and the exception handling do not make much sense. Hence, discard the fixup and exception tables at link time, use memcpy/memset for the user copy/clearing functions, and define the permission check macros to be constants. Some of this patch was derived from the equivalent patch by Hyok S. Choi. Signed-off-by: Hyok S. Choi <hyok.choi@samsung.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
47 lines
1.4 KiB
Makefile
47 lines
1.4 KiB
Makefile
#
|
|
# linux/arch/arm/lib/Makefile
|
|
#
|
|
# Copyright (C) 1995-2000 Russell King
|
|
#
|
|
|
|
lib-y := backtrace.o changebit.o csumipv6.o csumpartial.o \
|
|
csumpartialcopy.o csumpartialcopyuser.o clearbit.o \
|
|
delay.o findbit.o memchr.o memcpy.o \
|
|
memmove.o memset.o memzero.o setbit.o \
|
|
strncpy_from_user.o strnlen_user.o \
|
|
strchr.o strrchr.o \
|
|
testchangebit.o testclearbit.o testsetbit.o \
|
|
ashldi3.o ashrdi3.o lshrdi3.o muldi3.o \
|
|
ucmpdi2.o lib1funcs.o div64.o sha1.o \
|
|
io-readsb.o io-writesb.o io-readsl.o io-writesl.o
|
|
|
|
mmu-y := clear_user.o copy_page.o getuser.o putuser.o
|
|
|
|
# the code in uaccess.S is not preemption safe and
|
|
# probably faster on ARMv3 only
|
|
ifeq ($(CONFIG_PREEMPT),y)
|
|
mmu-y += copy_from_user.o copy_to_user.o
|
|
else
|
|
ifneq ($(CONFIG_CPU_32v3),y)
|
|
mmu-y += copy_from_user.o copy_to_user.o
|
|
else
|
|
mmu-y += uaccess.o
|
|
endif
|
|
endif
|
|
|
|
lib-$(CONFIG_MMU) += $(mmu-y)
|
|
|
|
ifeq ($(CONFIG_CPU_32v3),y)
|
|
lib-y += io-readsw-armv3.o io-writesw-armv3.o
|
|
else
|
|
lib-y += io-readsw-armv4.o io-writesw-armv4.o
|
|
endif
|
|
|
|
lib-$(CONFIG_ARCH_RPC) += ecard.o io-acorn.o floppydma.o
|
|
lib-$(CONFIG_ARCH_CLPS7500) += io-acorn.o
|
|
lib-$(CONFIG_ARCH_L7200) += io-acorn.o
|
|
lib-$(CONFIG_ARCH_SHARK) += io-shark.o
|
|
|
|
$(obj)/csumpartialcopy.o: $(obj)/csumpartialcopygeneric.S
|
|
$(obj)/csumpartialcopyuser.o: $(obj)/csumpartialcopygeneric.S
|