1/* U3copy_to_user.S: UltraSparc-III optimized copy to userspace.
2 *
3 * Copyright (C) 1999, 2000, 2004 David S. Miller (davem@redhat.com)
4 */
5
6#define EX_ST(x)		\
798:	x;			\
8	.section __ex_table,"a";\
9	.align 4;		\
10	.word 98b, __retl_one;	\
11	.text;			\
12	.align 4;
13
14#define FUNC_NAME		U3copy_to_user
15#define STORE(type,src,addr)	type##a src, [addr] ASI_AIUS
16#define STORE_BLK(src,addr)	stda src, [addr] ASI_BLK_AIUS
17#define EX_RETVAL(x)		0
18
19	/* Writing to %asi is _expensive_ so we hardcode it.
20	 * Reading %asi to check for KERNEL_DS is comparatively
21	 * cheap.
22	 */
23#define PREAMBLE					\
24	rd		%asi, %g1;			\
25	cmp		%g1, ASI_AIUS;			\
26	bne,pn		%icc, ___copy_in_user;		\
27	 nop;						\
28
29#include "U3memcpy.S"
30