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![]() When compiling a MMU kernel with CPU_HAS_ADDRESS_SPACES=n (e.g. "MMU=y allnoconfig": "echo CONFIG_MMU=y > allno.config && make KCONFIG_ALLCONFIG=1 allnoconfig"), we use plain "move" instead of "moves", and I got: CC arch/m68k/lib/uaccess.o {standard input}: Assembler messages: {standard input}:47: Error: operands mismatch -- statement `move.b %a0,(%a1)' ignored This happens because plain "move" doesn't support byte transfers between memory and address registers, while "moves" does. Fix the asm constraints for __generic_copy_from_user(), __generic_copy_to_user(), and __clear_user() to only use data registers when accessing userspace. Also, relax the asm constraints for 16-bit userspace accesses in __put_user() and __get_user(), as both "move" and "moves" do support such transfers between memory and address registers. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> |
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.. | ||
ashldi3.c | ||
ashrdi3.c | ||
checksum.c | ||
divsi3.S | ||
lshrdi3.c | ||
Makefile | ||
memcpy.c | ||
memmove.c | ||
memset.c | ||
modsi3.S | ||
muldi3.c | ||
mulsi3.S | ||
uaccess.c | ||
udivsi3.S | ||
umodsi3.S |