33 lines
671 B
ArmAsm
33 lines
671 B
ArmAsm
|
/* NGcopy_from_user.S: Niagara optimized copy from userspace.
|
||
|
|
*
|
||
|
|
* Copyright (C) 2006, 2007 David S. Miller (davem@davemloft.net)
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define EX_LD(x,y) \
|
||
|
|
98: x; \
|
||
|
|
.section __ex_table,"a";\
|
||
|
|
.align 4; \
|
||
|
|
.word 98b, y; \
|
||
|
|
.text; \
|
||
|
|
.align 4;
|
||
|
|
|
||
|
|
#ifndef ASI_AIUS
|
||
|
|
#define ASI_AIUS 0x11
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#define FUNC_NAME NGcopy_from_user
|
||
|
|
#define LOAD(type,addr,dest) type##a [addr] ASI_AIUS, dest
|
||
|
|
#define LOAD_TWIN(addr_reg,dest0,dest1) \
|
||
|
|
ldda [addr_reg] ASI_BLK_INIT_QUAD_LDD_AIUS, dest0
|
||
|
|
#define EX_RETVAL(x) %g0
|
||
|
|
|
||
|
|
#ifdef __KERNEL__
|
||
|
|
#define PREAMBLE \
|
||
|
|
rd %asi, %g1; \
|
||
|
|
cmp %g1, ASI_AIUS; \
|
||
|
|
bne,pn %icc, ___copy_in_user; \
|
||
|
|
nop
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#include "NGmemcpy.S"
|