36 lines
703 B
ArmAsm
36 lines
703 B
ArmAsm
/* NG2copy_from_user.S: Niagara-2 optimized copy from userspace.
|
|
*
|
|
* Copyright (C) 2007 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
|
|
|
|
#ifndef ASI_BLK_AIUS_4V
|
|
#define ASI_BLK_AIUS_4V 0x17
|
|
#endif
|
|
|
|
#define FUNC_NAME NG2copy_from_user
|
|
#define LOAD(type,addr,dest) type##a [addr] %asi, dest
|
|
#define LOAD_BLK(addr,dest) ldda [addr] ASI_BLK_AIUS_4V, 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 "NG2memcpy.S"
|