1/* U1copy_from_user.S: UltraSparc-I/II/IIi/IIe optimized copy from userspace.
 2 *
 3 * Copyright (C) 1999, 2000, 2004 David S. Miller (davem@redhat.com)
 4 */
 5
 6#define EX_LD(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		___copy_from_user
15#define LOAD(type,addr,dest)	type##a [addr] %asi, dest
16#define LOAD_BLK(addr,dest)	ldda [addr] ASI_BLK_AIUS, dest
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 "U1memcpy.S"

 1/* U1copy_from_user.S: UltraSparc-I/II/IIi/IIe optimized copy from userspace.
 2 *
 3 * Copyright (C) 1999, 2000, 2004 David S. Miller (davem@redhat.com)
 4 */
 5
 6#define EX_LD(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		___copy_from_user
15#define LOAD(type,addr,dest)	type##a [addr] %asi, dest
16#define LOAD_BLK(addr,dest)	ldda [addr] ASI_BLK_AIUS, dest
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 "U1memcpy.S"