1/* NGcopy_to_user.S: Niagara optimized copy to userspace.
2 *
3 * Copyright (C) 2006, 2007 David S. Miller (davem@davemloft.net)
4 */
5
6#define EX_ST(x)		\
798:	x;			\
8	.section __ex_table,"a";\
9	.align 4;		\
10	.word 98b, __ret_one_asi;\
11	.text;			\
12	.align 4;
13
14#ifndef ASI_AIUS
15#define ASI_AIUS	0x11
16#endif
17
18#define FUNC_NAME		NGcopy_to_user
19#define STORE(type,src,addr)	type##a src, [addr] ASI_AIUS
20#define STORE_ASI		ASI_BLK_INIT_QUAD_LDD_AIUS
21#define EX_RETVAL(x)		%g0
22
23#ifdef __KERNEL__
24	/* Writing to %asi is _expensive_ so we hardcode it.
25	 * Reading %asi to check for KERNEL_DS is comparatively
26	 * cheap.
27	 */
28#define PREAMBLE					\
29	rd		%asi, %g1;			\
30	cmp		%g1, ASI_AIUS;			\
31	bne,pn		%icc, ___copy_in_user;		\
32	 nop
33#endif
34
35#include "NGmemcpy.S"
36