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original_kernel/arch/sparc/lib/M7copy_from_user.S

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arch/sparc: Optimized memcpy, memset, copy_to_user, copy_from_user for M7/M8 New algorithm that takes advantage of the M7/M8 block init store ASI, ie, overlapping pipelines and miss buffer filling. Full details in code comments. Signed-off-by: Babu Moger <babu.moger@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-08 07:52:51 +08:00
/*
* M7copy_from_user.S: SPARC M7 optimized copy from userspace.
*
* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
*/
arch/sparc: Add accurate exception reporting in M7memcpy Add accurate exception reporting in M7memcpy Signed-off-by: Babu Moger <babu.moger@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-08 07:52:52 +08:00
#define EX_LD(x, y) \
arch/sparc: Optimized memcpy, memset, copy_to_user, copy_from_user for M7/M8 New algorithm that takes advantage of the M7/M8 block init store ASI, ie, overlapping pipelines and miss buffer filling. Full details in code comments. Signed-off-by: Babu Moger <babu.moger@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-08 07:52:51 +08:00
98: x; \
.section __ex_table,"a"; \
.align 4; \
arch/sparc: Add accurate exception reporting in M7memcpy Add accurate exception reporting in M7memcpy Signed-off-by: Babu Moger <babu.moger@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-08 07:52:52 +08:00
.word 98b, y; \
arch/sparc: Optimized memcpy, memset, copy_to_user, copy_from_user for M7/M8 New algorithm that takes advantage of the M7/M8 block init store ASI, ie, overlapping pipelines and miss buffer filling. Full details in code comments. Signed-off-by: Babu Moger <babu.moger@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-08 07:52:51 +08:00
.text; \
.align 4;
arch/sparc: Add accurate exception reporting in M7memcpy Add accurate exception reporting in M7memcpy Signed-off-by: Babu Moger <babu.moger@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-08 07:52:52 +08:00
#define EX_LD_FP(x, y) \
arch/sparc: Optimized memcpy, memset, copy_to_user, copy_from_user for M7/M8 New algorithm that takes advantage of the M7/M8 block init store ASI, ie, overlapping pipelines and miss buffer filling. Full details in code comments. Signed-off-by: Babu Moger <babu.moger@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-08 07:52:51 +08:00
98: x; \
.section __ex_table,"a"; \
.align 4; \
arch/sparc: Add accurate exception reporting in M7memcpy Add accurate exception reporting in M7memcpy Signed-off-by: Babu Moger <babu.moger@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-08 07:52:52 +08:00
.word 98b, y##_fp; \
arch/sparc: Optimized memcpy, memset, copy_to_user, copy_from_user for M7/M8 New algorithm that takes advantage of the M7/M8 block init store ASI, ie, overlapping pipelines and miss buffer filling. Full details in code comments. Signed-off-by: Babu Moger <babu.moger@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-08 07:52:51 +08:00
.text; \
.align 4;
#ifndef ASI_AIUS
#define ASI_AIUS 0x11
#endif
#define FUNC_NAME M7copy_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, raw_copy_in_user; \
arch/sparc: Add accurate exception reporting in M7memcpy Add accurate exception reporting in M7memcpy Signed-off-by: Babu Moger <babu.moger@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-08 07:52:52 +08:00
nop
arch/sparc: Optimized memcpy, memset, copy_to_user, copy_from_user for M7/M8 New algorithm that takes advantage of the M7/M8 block init store ASI, ie, overlapping pipelines and miss buffer filling. Full details in code comments. Signed-off-by: Babu Moger <babu.moger@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-08 07:52:51 +08:00
#endif
#include "M7memcpy.S"