[deliverable/linux.git] / arch / sparc / lib / NGcopy_from_user.S

/* NGcopy_from_user.S: Niagara optimized copy from userspace.
 *
 * Copyright (C) 2006, 2007 David S. Miller (davem@davemloft.net)
 */

#define EX_LD(x)		\
98:	x;			\
	.section __ex_table,"a";\
	.align 4;		\
	.word 98b, __ret_one_asi;\
	.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"
Commit	Line	Data
398d1083 DM	1	/* NGcopy_from_user.S: Niagara optimized copy from userspace.
398d1083 DM	2	*
25e5566e	3	* Copyright (C) 2006, 2007 David S. Miller (davem@davemloft.net)
398d1083 DM	4	*/
	5
	6	#define EX_LD(x) \
	7	98: x; \
398d1083 DM	8	.section __ex_table,"a";\
398d1083 DM	9	.align 4; \
40bdac7d	10	.word 98b, __ret_one_asi;\
398d1083 DM	11	.text; \
	12	.align 4;
	13
	14	#ifndef ASI_AIUS
	15	#define ASI_AIUS 0x11
	16	#endif
	17
	18	#define FUNC_NAME NGcopy_from_user
	19	#define LOAD(type,addr,dest) type##a [addr] ASI_AIUS, dest
	20	#define LOAD_TWIN(addr_reg,dest0,dest1) \
	21	ldda [addr_reg] ASI_BLK_INIT_QUAD_LDD_AIUS, dest0
25e5566e	22	#define EX_RETVAL(x) %g0
398d1083 DM	23
	24	#ifdef __KERNEL__
	25	#define PREAMBLE \
	26	rd %asi, %g1; \
	27	cmp %g1, ASI_AIUS; \
aeb39876	28	bne,pn %icc, ___copy_in_user; \
398d1083 DM	29	nop
	30	#endif
	31
	32	#include "NGmemcpy.S"