mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
30 lines
580 B
ArmAsm
30 lines
580 B
ArmAsm
/* NG4copy_from_user.S: Niagara-4 optimized copy from userspace.
|
|
*
|
|
* Copyright (C) 2012 David S. Miller (davem@davemloft.net)
|
|
*/
|
|
|
|
#define EX_LD(x) \
|
|
98: x; \
|
|
.section __ex_table,"a";\
|
|
.align 4; \
|
|
.word 98b, __retl_one_asi;\
|
|
.text; \
|
|
.align 4;
|
|
|
|
#ifndef ASI_AIUS
|
|
#define ASI_AIUS 0x11
|
|
#endif
|
|
|
|
#define FUNC_NAME NG4copy_from_user
|
|
#define LOAD(type,addr,dest) type##a [addr] %asi, dest
|
|
#define EX_RETVAL(x) 0
|
|
|
|
#ifdef __KERNEL__
|
|
#define PREAMBLE \
|
|
rd %asi, %g1; \
|
|
cmp %g1, ASI_AIUS; \
|
|
bne,pn %icc, ___copy_in_user; \
|
|
nop
|
|
#endif
|
|
|
|
#include "NG4memcpy.S"
|