mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-21 11:44:01 +08:00
40bdac7dbc
This is an implementation of a suggestion made by Chris Torek:
--------------------
Something else I noticed in passing: the EX and EX_LD/EX_ST macros
scattered throughout the various .S files make a fair bit of .fixup
code, all of which does the same thing. At the cost of one symbol
in copy_in_user.S, you could just have one common two-instruction
retl-and-mov-1 fixup that they all share.
--------------------
The following is with a defconfig build:
text data bss dec hex filename
3972767 344024 584449 4901240 4ac978 vmlinux.orig
3968887 344024 584449 4897360 4aba50 vmlinux
Signed-off-by: David S. Miller <davem@davemloft.net>
19 lines
406 B
ArmAsm
19 lines
406 B
ArmAsm
/* U3copy_from_user.S: UltraSparc-III optimized copy from userspace.
|
|
*
|
|
* Copyright (C) 1999, 2000, 2004 David S. Miller (davem@redhat.com)
|
|
*/
|
|
|
|
#define EX_LD(x) \
|
|
98: x; \
|
|
.section __ex_table,"a";\
|
|
.align 4; \
|
|
.word 98b, __retl_one; \
|
|
.text; \
|
|
.align 4;
|
|
|
|
#define FUNC_NAME U3copy_from_user
|
|
#define LOAD(type,addr,dest) type##a [addr] %asi, dest
|
|
#define EX_RETVAL(x) 0
|
|
|
|
#include "U3memcpy.S"
|