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/*
* M7copy_to_user.S: SPARC M7 optimized copy to userspace.
*
* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
*/
#define EX_ST(x) \
98: x; \
.section __ex_table,"a"; \
.align 4; \
.word 98b, __restore_asi; \
.text; \
.align 4;
#define EX_ST_FP(x) \
98: x; \
.section __ex_table,"a"; \
.align 4; \
.word 98b, __restore_asi_fp; \
.text; \
.align 4;
#ifndef ASI_AIUS
#define ASI_AIUS 0x11
#endif
#ifndef ASI_BLK_INIT_QUAD_LDD_AIUS
#define ASI_BLK_INIT_QUAD_LDD_AIUS 0x23
#endif
#define FUNC_NAME M7copy_to_user
#define STORE(type,src,addr) type##a src, [addr] %asi
#define STORE_ASI ASI_BLK_INIT_QUAD_LDD_AIUS
#define STORE_MRU_ASI ASI_ST_BLKINIT_MRU_S
#define EX_RETVAL(x) 0
#ifdef __KERNEL__
/* Writing to %asi is _expensive_ so we hardcode it.
* Reading %asi to check for KERNEL_DS is comparatively
* cheap.
*/
#define PREAMBLE \
rd %asi, %g1; \
cmp %g1, ASI_AIUS; \
bne,pn %icc, raw_copy_in_user; \
nop
#endif
#include "M7memcpy.S"
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