Victor Kamensky d9981380b4 ARM: 8137/1: fix get_user BE behavior for target variable with size of 8 bytes ... e38361d 'ARM: 8091/2: add get_user() support for 8 byte types' commit broke V7 BE get_user call when target var size is 64 bit, but '*ptr' size is 32 bit or smaller. e38361d changed type of __r2 from 'register unsigned long' to 'register typeof(x) __r2 asm("r2")' i.e before the change even when target variable size was 64 bit, __r2 was still 32 bit. But after e38361d commit, for target var of 64 bit size, __r2 became 64 bit and now it should occupy 2 registers r2, and r3. The issue in BE case that r3 register is least significant word of __r2 and r2 register is most significant word of __r2. But __get_user_4 still copies result into r2 (most significant word of __r2). Subsequent code copies from __r2 into x, but for situation described it will pick up only garbage from r3 register. Special __get_user_64t_(124) functions are introduced. They are similar to corresponding __get_user_(124) function but result stored in r3 register (lsw in case of 64 bit __r2 in BE image). Those function are used by get_user macro in case of BE and target var size is 64bit. Also changed __get_user_lo8 name into __get_user_32t_8 to get consistent naming accross all cases. Signed-off-by: Victor Kamensky <victor.kamensky@linaro.org> Suggested-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>		2014-09-12 17:38:59 +01:00
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ashldi3.S
ashrdi3.S
backtrace.S
bitops.h
bswapsdi2.S
call_with_stack.S
changebit.S
clear_user.S
clearbit.S
copy_from_user.S
copy_page.S
copy_template.S
copy_to_user.S
csumipv6.S
csumpartial.S
csumpartialcopy.S
csumpartialcopygeneric.S
csumpartialcopyuser.S
delay-loop.S
delay.c
div64.S
ecard.S
findbit.S
floppydma.S
getuser.S
io-acorn.S
io-readsb.S
io-readsl.S
io-readsw-armv3.S
io-readsw-armv4.S
io-writesb.S
io-writesl.S
io-writesw-armv3.S
io-writesw-armv4.S
lib1funcs.S
lshrdi3.S
Makefile
memchr.S
memcpy.S
memmove.S
memset.S
memzero.S
muldi3.S
putuser.S
setbit.S
strchr.S
strrchr.S
testchangebit.S
testclearbit.S
testsetbit.S
uaccess_with_memcpy.c
uaccess.S
ucmpdi2.S
xor-neon.c