[linux-2.6-block.git] / arch / sparc / lib / NG4copy_from_user.S

/* NG4copy_from_user.S: Niagara-4 optimized copy from userspace.
 *
 * Copyright (C) 2012 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

#define FUNC_NAME		NG4copy_from_user
#define LOAD(type,addr,dest)	type##a [addr] %asi, 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 "NG4memcpy.S"
Commit	Line	Data
90192057	1	/* NG4copy_from_user.S: Niagara-4 optimized copy from userspace.
ae2c6ca6 DM	2	*
	3	* Copyright (C) 2012 David S. Miller (davem@davemloft.net)
	4	*/
	5
	6	#define EX_LD(x) \
	7	98: x; \
	8	.section __ex_table,"a";\
	9	.align 4; \
	10	.word 98b, __retl_one_asi;\
	11	.text; \
	12	.align 4;
	13
	14	#ifndef ASI_AIUS
	15	#define ASI_AIUS 0x11
	16	#endif
	17
	18	#define FUNC_NAME NG4copy_from_user
	19	#define LOAD(type,addr,dest) type##a [addr] %asi, dest
	20	#define EX_RETVAL(x) 0
	21
	22	#ifdef __KERNEL__
	23	#define PREAMBLE \
	24	rd %asi, %g1; \
	25	cmp %g1, ASI_AIUS; \
	26	bne,pn %icc, ___copy_in_user; \
	27	nop
	28	#endif
	29
	30	#include "NG4memcpy.S"