Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

84 files changed, 13132 insertions, 0 deletions

diff --git a/arch/sparc/lib/COPYING.LIB b/arch/sparc/lib/COPYING.LIB
new file mode 100644
index 000000000..eb685a5ec
--- /dev/null
+++ b/arch/sparc/lib/COPYING.LIB
@@ -0,0 +1,481 @@
+		  GNU LIBRARY GENERAL PUBLIC LICENSE
+		       Version 2, June 1991
+
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+That's all there is to it!
diff --git a/arch/sparc/lib/GENbzero.S b/arch/sparc/lib/GENbzero.S
new file mode 100644
index 000000000..63d618857
--- /dev/null
+++ b/arch/sparc/lib/GENbzero.S
@@ -0,0 +1,157 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* GENbzero.S: Generic sparc64 memset/clear_user.
+ *
+ * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
+ */
+#include <asm/asi.h>
+
+#define EX_ST(x,y)		\
+98:	x,y;			\
+	.section __ex_table,"a";\
+	.align 4;		\
+	.word 98b, __retl_o1_asi;\
+	.text;			\
+	.align 4;
+
+	.align	32
+	.text
+
+	.globl		GENmemset
+	.type		GENmemset, #function
+GENmemset:		/* %o0=buf, %o1=pat, %o2=len */
+	and		%o1, 0xff, %o3
+	mov		%o2, %o1
+	sllx		%o3, 8, %g1
+	or		%g1, %o3, %o2
+	sllx		%o2, 16, %g1
+	or		%g1, %o2, %o2
+	sllx		%o2, 32, %g1
+	ba,pt		%xcc, 1f
+	 or		%g1, %o2, %o2
+
+	.globl		GENbzero
+	.type		GENbzero, #function
+GENbzero:
+	clr		%o2
+1:	brz,pn		%o1, GENbzero_return
+	 mov		%o0, %o3
+
+	/* %o5: saved %asi, restored at GENbzero_done
+	 * %o4:	store %asi to use
+	 */
+	rd		%asi, %o5
+	mov		ASI_P, %o4
+	wr		%o4, 0x0, %asi
+
+GENbzero_from_clear_user:
+	cmp		%o1, 15
+	bl,pn		%icc, GENbzero_tiny
+	 andcc		%o0, 0x7, %g1
+	be,pt		%xcc, 2f
+	 mov		8, %g2
+	sub		%g2, %g1, %g1
+	sub		%o1, %g1, %o1
+1:	EX_ST(stba %o2, [%o0 + 0x00] %asi)
+	subcc		%g1, 1, %g1
+	bne,pt		%xcc, 1b
+	 add		%o0, 1, %o0
+2:	cmp		%o1, 128
+	bl,pn		%icc, GENbzero_medium
+	 andcc		%o0, (64 - 1), %g1
+	be,pt		%xcc, GENbzero_pre_loop
+	 mov		64, %g2
+	sub		%g2, %g1, %g1
+	sub		%o1, %g1, %o1
+1:	EX_ST(stxa %o2, [%o0 + 0x00] %asi)
+	subcc		%g1, 8, %g1
+	bne,pt		%xcc, 1b
+	 add		%o0, 8, %o0
+
+GENbzero_pre_loop:
+	andn		%o1, (64 - 1), %g1
+	sub		%o1, %g1, %o1
+GENbzero_loop:
+	EX_ST(stxa %o2, [%o0 + 0x00] %asi)
+	EX_ST(stxa %o2, [%o0 + 0x08] %asi)
+	EX_ST(stxa %o2, [%o0 + 0x10] %asi)
+	EX_ST(stxa %o2, [%o0 + 0x18] %asi)
+	EX_ST(stxa %o2, [%o0 + 0x20] %asi)
+	EX_ST(stxa %o2, [%o0 + 0x28] %asi)
+	EX_ST(stxa %o2, [%o0 + 0x30] %asi)
+	EX_ST(stxa %o2, [%o0 + 0x38] %asi)
+	subcc		%g1, 64, %g1
+	bne,pt		%xcc, GENbzero_loop
+	 add		%o0, 64, %o0
+
+	membar		#Sync
+	wr		%o4, 0x0, %asi
+	brz,pn		%o1, GENbzero_done
+GENbzero_medium:
+	 andncc		%o1, 0x7, %g1
+	be,pn		%xcc, 2f
+	 sub		%o1, %g1, %o1
+1:	EX_ST(stxa %o2, [%o0 + 0x00] %asi)
+	subcc		%g1, 8, %g1
+	bne,pt		%xcc, 1b
+	 add		%o0, 8, %o0
+2:	brz,pt		%o1, GENbzero_done
+	 nop
+
+GENbzero_tiny:
+1:	EX_ST(stba %o2, [%o0 + 0x00] %asi)
+	subcc		%o1, 1, %o1
+	bne,pt		%icc, 1b
+	 add		%o0, 1, %o0
+
+	/* fallthrough */
+
+GENbzero_done:
+	wr		%o5, 0x0, %asi
+
+GENbzero_return:
+	retl
+	 mov		%o3, %o0
+	.size		GENbzero, .-GENbzero
+	.size		GENmemset, .-GENmemset
+
+	.globl		GENclear_user
+	.type		GENclear_user, #function
+GENclear_user:		/* %o0=buf, %o1=len */
+	rd		%asi, %o5
+	brz,pn		%o1, GENbzero_done
+	 clr		%o3
+	cmp		%o5, ASI_AIUS
+	bne,pn		%icc, GENbzero
+	 clr		%o2
+	ba,pt		%xcc, GENbzero_from_clear_user
+	 mov		ASI_AIUS, %o4
+	.size		GENclear_user, .-GENclear_user
+
+#define BRANCH_ALWAYS	0x10680000
+#define NOP		0x01000000
+#define GEN_DO_PATCH(OLD, NEW)	\
+	sethi	%hi(NEW), %g1; \
+	or	%g1, %lo(NEW), %g1; \
+	sethi	%hi(OLD), %g2; \
+	or	%g2, %lo(OLD), %g2; \
+	sub	%g1, %g2, %g1; \
+	sethi	%hi(BRANCH_ALWAYS), %g3; \
+	sll	%g1, 11, %g1; \
+	srl	%g1, 11 + 2, %g1; \
+	or	%g3, %lo(BRANCH_ALWAYS), %g3; \
+	or	%g3, %g1, %g3; \
+	stw	%g3, [%g2]; \
+	sethi	%hi(NOP), %g3; \
+	or	%g3, %lo(NOP), %g3; \
+	stw	%g3, [%g2 + 0x4]; \
+	flush	%g2;
+
+	.globl	generic_patch_bzero
+	.type	generic_patch_bzero,#function
+generic_patch_bzero:
+	GEN_DO_PATCH(memset, GENmemset)
+	GEN_DO_PATCH(__bzero, GENbzero)
+	GEN_DO_PATCH(__clear_user, GENclear_user)
+	retl
+	 nop
+	.size	generic_patch_bzero,.-generic_patch_bzero
diff --git a/arch/sparc/lib/GENcopy_from_user.S b/arch/sparc/lib/GENcopy_from_user.S
new file mode 100644
index 000000000..6891a5678
--- /dev/null
+++ b/arch/sparc/lib/GENcopy_from_user.S
@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* GENcopy_from_user.S: Generic sparc64 copy from userspace.
+ *
+ * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
+ */
+
+#define EX_LD(x,y)		\
+98:	x;			\
+	.section __ex_table,"a";\
+	.align 4;		\
+	.word 98b, y;		\
+	.text;			\
+	.align 4;
+
+#ifndef ASI_AIUS
+#define ASI_AIUS	0x11
+#endif
+
+#define FUNC_NAME		GENcopy_from_user
+#define LOAD(type,addr,dest)	type##a [addr] ASI_AIUS, dest
+#define EX_RETVAL(x)		0
+
+#ifdef __KERNEL__
+#define PREAMBLE					\
+	rd		%asi, %g1;			\
+	cmp		%g1, ASI_AIUS;			\
+	bne,pn		%icc, raw_copy_in_user;		\
+	 nop
+#endif
+
+#include "GENmemcpy.S"
diff --git a/arch/sparc/lib/GENcopy_to_user.S b/arch/sparc/lib/GENcopy_to_user.S
new file mode 100644
index 000000000..df75b532a
--- /dev/null
+++ b/arch/sparc/lib/GENcopy_to_user.S
@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* GENcopy_to_user.S: Generic sparc64 copy to userspace.
+ *
+ * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
+ */
+
+#define EX_ST(x,y)		\
+98:	x;			\
+	.section __ex_table,"a";\
+	.align 4;		\
+	.word 98b, y;		\
+	.text;			\
+	.align 4;
+
+#ifndef ASI_AIUS
+#define ASI_AIUS	0x11
+#endif
+
+#define FUNC_NAME		GENcopy_to_user
+#define STORE(type,src,addr)	type##a src, [addr] ASI_AIUS
+#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 "GENmemcpy.S"
diff --git a/arch/sparc/lib/GENmemcpy.S b/arch/sparc/lib/GENmemcpy.S
new file mode 100644
index 000000000..114340a0d
--- /dev/null
+++ b/arch/sparc/lib/GENmemcpy.S
@@ -0,0 +1,142 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* GENmemcpy.S: Generic sparc64 memcpy.
+ *
+ * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
+ */
+
+#ifdef __KERNEL__
+#include <linux/linkage.h>
+#define GLOBAL_SPARE	%g7
+#else
+#define GLOBAL_SPARE	%g5
+#endif
+
+#ifndef EX_LD
+#define EX_LD(x,y)	x
+#endif
+
+#ifndef EX_ST
+#define EX_ST(x,y)	x
+#endif
+
+#ifndef LOAD
+#define LOAD(type,addr,dest)	type [addr], dest
+#endif
+
+#ifndef STORE
+#define STORE(type,src,addr)	type src, [addr]
+#endif
+
+#ifndef FUNC_NAME
+#define FUNC_NAME	GENmemcpy
+#endif
+
+#ifndef PREAMBLE
+#define PREAMBLE
+#endif
+
+#ifndef XCC
+#define XCC xcc
+#endif
+
+	.register	%g2,#scratch
+	.register	%g3,#scratch
+
+	.text
+
+#ifndef EX_RETVAL
+#define EX_RETVAL(x)	x
+ENTRY(GEN_retl_o4_1)
+	add	%o4, %o2, %o4
+	retl
+	 add	%o4, 1, %o0
+ENDPROC(GEN_retl_o4_1)
+ENTRY(GEN_retl_g1_8)
+	add	%g1, %o2, %g1
+	retl
+	 add	%g1, 8, %o0
+ENDPROC(GEN_retl_g1_8)
+ENTRY(GEN_retl_o2_4)
+	retl
+	 add	%o2, 4, %o0
+ENDPROC(GEN_retl_o2_4)
+ENTRY(GEN_retl_o2_1)
+	retl
+	 add	%o2, 1, %o0
+ENDPROC(GEN_retl_o2_1)
+#endif
+
+	.align		64
+
+	.globl	FUNC_NAME
+	.type	FUNC_NAME,#function
+FUNC_NAME:	/* %o0=dst, %o1=src, %o2=len */
+	srlx		%o2, 31, %g2
+	cmp		%g2, 0
+	tne		%XCC, 5
+	PREAMBLE
+	mov		%o0, GLOBAL_SPARE
+
+	cmp		%o2, 0
+	be,pn		%XCC, 85f
+	 or		%o0, %o1, %o3
+	cmp		%o2, 16
+	blu,a,pn	%XCC, 80f
+	 or		%o3, %o2, %o3
+
+	xor		%o0, %o1, %o4
+	andcc		%o4, 0x7, %g0
+	bne,a,pn	%XCC, 90f
+	 sub		%o0, %o1, %o3
+
+	and		%o0, 0x7, %o4
+	sub		%o4, 0x8, %o4
+	sub		%g0, %o4, %o4
+	sub		%o2, %o4, %o2
+1:	subcc		%o4, 1, %o4
+	EX_LD(LOAD(ldub, %o1, %g1),GEN_retl_o4_1)
+	EX_ST(STORE(stb, %g1, %o0),GEN_retl_o4_1)
+	add		%o1, 1, %o1
+	bne,pt		%XCC, 1b
+	add		%o0, 1, %o0
+
+	andn		%o2, 0x7, %g1
+	sub		%o2, %g1, %o2
+1:	subcc		%g1, 0x8, %g1
+	EX_LD(LOAD(ldx, %o1, %g2),GEN_retl_g1_8)
+	EX_ST(STORE(stx, %g2, %o0),GEN_retl_g1_8)
+	add		%o1, 0x8, %o1
+	bne,pt		%XCC, 1b
+	 add		%o0, 0x8, %o0
+
+	brz,pt		%o2, 85f
+	 sub		%o0, %o1, %o3
+	ba,a,pt		%XCC, 90f
+
+	.align		64
+80: /* 0 < len <= 16 */
+	andcc		%o3, 0x3, %g0
+	bne,pn		%XCC, 90f
+	 sub		%o0, %o1, %o3
+
+1:
+	subcc		%o2, 4, %o2
+	EX_LD(LOAD(lduw, %o1, %g1),GEN_retl_o2_4)
+	EX_ST(STORE(stw, %g1, %o1 + %o3),GEN_retl_o2_4)
+	bgu,pt		%XCC, 1b
+	 add		%o1, 4, %o1
+
+85:	retl
+	 mov		EX_RETVAL(GLOBAL_SPARE), %o0
+
+	.align		32
+90:
+	subcc		%o2, 1, %o2
+	EX_LD(LOAD(ldub, %o1, %g1),GEN_retl_o2_1)
+	EX_ST(STORE(stb, %g1, %o1 + %o3),GEN_retl_o2_1)
+	bgu,pt		%XCC, 90b
+	 add		%o1, 1, %o1
+	retl
+	 mov		EX_RETVAL(GLOBAL_SPARE), %o0
+
+	.size		FUNC_NAME, .-FUNC_NAME
diff --git a/arch/sparc/lib/GENpage.S b/arch/sparc/lib/GENpage.S
new file mode 100644
index 000000000..c143c4d1d
--- /dev/null
+++ b/arch/sparc/lib/GENpage.S
@@ -0,0 +1,78 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* GENpage.S: Generic clear and copy page.
+ *
+ * Copyright (C) 2007 (davem@davemloft.net)
+ */
+#include <asm/page.h>
+
+	.text
+	.align	32
+
+GENcopy_user_page:
+	set	PAGE_SIZE, %g7
+1:	ldx	[%o1 + 0x00], %o2
+	ldx	[%o1 + 0x08], %o3
+	ldx	[%o1 + 0x10], %o4
+	ldx	[%o1 + 0x18], %o5
+	stx	%o2, [%o0 + 0x00]
+	stx	%o3, [%o0 + 0x08]
+	stx	%o4, [%o0 + 0x10]
+	stx	%o5, [%o0 + 0x18]
+	ldx	[%o1 + 0x20], %o2
+	ldx	[%o1 + 0x28], %o3
+	ldx	[%o1 + 0x30], %o4
+	ldx	[%o1 + 0x38], %o5
+	stx	%o2, [%o0 + 0x20]
+	stx	%o3, [%o0 + 0x28]
+	stx	%o4, [%o0 + 0x30]
+	stx	%o5, [%o0 + 0x38]
+	subcc	%g7, 64, %g7
+	add	%o1, 64, %o1
+	bne,pt	%xcc, 1b
+	 add	%o0, 64, %o0
+	retl
+	 nop
+
+GENclear_page:
+GENclear_user_page:
+	set	PAGE_SIZE, %g7
+1:	stx	%g0, [%o0 + 0x00]
+	stx	%g0, [%o0 + 0x08]
+	stx	%g0, [%o0 + 0x10]
+	stx	%g0, [%o0 + 0x18]
+	stx	%g0, [%o0 + 0x20]
+	stx	%g0, [%o0 + 0x28]
+	stx	%g0, [%o0 + 0x30]
+	stx	%g0, [%o0 + 0x38]
+	subcc	%g7, 64, %g7
+	bne,pt	%xcc, 1b
+	 add	%o0, 64, %o0
+
+#define BRANCH_ALWAYS	0x10680000
+#define NOP		0x01000000
+#define GEN_DO_PATCH(OLD, NEW)	\
+	sethi	%hi(NEW), %g1; \
+	or	%g1, %lo(NEW), %g1; \
+	sethi	%hi(OLD), %g2; \
+	or	%g2, %lo(OLD), %g2; \
+	sub	%g1, %g2, %g1; \
+	sethi	%hi(BRANCH_ALWAYS), %g3; \
+	sll	%g1, 11, %g1; \
+	srl	%g1, 11 + 2, %g1; \
+	or	%g3, %lo(BRANCH_ALWAYS), %g3; \
+	or	%g3, %g1, %g3; \
+	stw	%g3, [%g2]; \
+	sethi	%hi(NOP), %g3; \
+	or	%g3, %lo(NOP), %g3; \
+	stw	%g3, [%g2 + 0x4]; \
+	flush	%g2;
+
+	.globl	generic_patch_pageops
+	.type	generic_patch_pageops,#function
+generic_patch_pageops:
+	GEN_DO_PATCH(copy_user_page, GENcopy_user_page)
+	GEN_DO_PATCH(_clear_page, GENclear_page)
+	GEN_DO_PATCH(clear_user_page, GENclear_user_page)
+	retl
+	 nop
+	.size	generic_patch_pageops,.-generic_patch_pageops
diff --git a/arch/sparc/lib/GENpatch.S b/arch/sparc/lib/GENpatch.S
new file mode 100644
index 000000000..1ec1f02c8
--- /dev/null
+++ b/arch/sparc/lib/GENpatch.S
@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* GENpatch.S: Patch Ultra-I routines with generic variant.
+ *
+ * Copyright (C) 2007 David S. Miller <davem@davemloft.net>
+ */
+
+#define BRANCH_ALWAYS	0x10680000
+#define NOP		0x01000000
+#define GEN_DO_PATCH(OLD, NEW)	\
+	sethi	%hi(NEW), %g1; \
+	or	%g1, %lo(NEW), %g1; \
+	sethi	%hi(OLD), %g2; \
+	or	%g2, %lo(OLD), %g2; \
+	sub	%g1, %g2, %g1; \
+	sethi	%hi(BRANCH_ALWAYS), %g3; \
+	sll	%g1, 11, %g1; \
+	srl	%g1, 11 + 2, %g1; \
+	or	%g3, %lo(BRANCH_ALWAYS), %g3; \
+	or	%g3, %g1, %g3; \
+	stw	%g3, [%g2]; \
+	sethi	%hi(NOP), %g3; \
+	or	%g3, %lo(NOP), %g3; \
+	stw	%g3, [%g2 + 0x4]; \
+	flush	%g2;
+
+	.globl	generic_patch_copyops
+	.type	generic_patch_copyops,#function
+generic_patch_copyops:
+	GEN_DO_PATCH(memcpy, GENmemcpy)
+	GEN_DO_PATCH(raw_copy_from_user, GENcopy_from_user)
+	GEN_DO_PATCH(raw_copy_to_user, GENcopy_to_user)
+	retl
+	 nop
+	.size	generic_patch_copyops,.-generic_patch_copyops
diff --git a/arch/sparc/lib/M7copy_from_user.S b/arch/sparc/lib/M7copy_from_user.S
new file mode 100644
index 000000000..66464b3e3
--- /dev/null
+++ b/arch/sparc/lib/M7copy_from_user.S
@@ -0,0 +1,40 @@
+/*
+ * M7copy_from_user.S: SPARC M7 optimized copy from userspace.
+ *
+ * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
+ */
+
+
+#define EX_LD(x, y)			\
+98:	x;				\
+	.section __ex_table,"a";	\
+	.align 4;			\
+	.word 98b, y;			\
+	.text;				\
+	.align 4;
+
+#define EX_LD_FP(x, y)			\
+98:	x;				\
+	.section __ex_table,"a";	\
+	.align 4;			\
+	.word 98b, y##_fp;		\
+	.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;		\
+	 nop
+#endif
+
+#include "M7memcpy.S"
diff --git a/arch/sparc/lib/M7copy_to_user.S b/arch/sparc/lib/M7copy_to_user.S
new file mode 100644
index 000000000..a60ac467f
--- /dev/null
+++ b/arch/sparc/lib/M7copy_to_user.S
@@ -0,0 +1,51 @@
+/*
+ * 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, y)			\
+98:	x;				\
+	.section __ex_table,"a";	\
+	.align 4;			\
+	.word 98b, y;			\
+	.text;				\
+	.align 4;
+
+#define EX_ST_FP(x, y)			\
+98:	x;				\
+	.section __ex_table,"a";	\
+	.align 4;			\
+	.word 98b, y##_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"
diff --git a/arch/sparc/lib/M7memcpy.S b/arch/sparc/lib/M7memcpy.S
new file mode 100644
index 000000000..cbd42ea7c
--- /dev/null
+++ b/arch/sparc/lib/M7memcpy.S
@@ -0,0 +1,923 @@
+/*
+ * M7memcpy: Optimized SPARC M7 memcpy
+ *
+ * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
+ */
+
+	.file	"M7memcpy.S"
+
+/*
+ * memcpy(s1, s2, len)
+ *
+ * Copy s2 to s1, always copy n bytes.
+ * Note: this C code does not work for overlapped copies.
+ *
+ * Fast assembler language version of the following C-program for memcpy
+ * which represents the `standard' for the C-library.
+ *
+ *	void *
+ *	memcpy(void *s, const void *s0, size_t n)
+ *	{
+ *		if (n != 0) {
+ *		    char *s1 = s;
+ *		    const char *s2 = s0;
+ *		    do {
+ *			*s1++ = *s2++;
+ *		    } while (--n != 0);
+ *		}
+ *		return (s);
+ *	}
+ *
+ *
+ * SPARC T7/M7 Flow :
+ *
+ * if (count < SMALL_MAX) {
+ *   if count < SHORTCOPY              (SHORTCOPY=3)
+ *	copy bytes; exit with dst addr
+ *   if src & dst aligned on word boundary but not long word boundary,
+ *     copy with ldw/stw; branch to finish_up
+ *   if src & dst aligned on long word boundary
+ *     copy with ldx/stx; branch to finish_up
+ *   if src & dst not aligned and length <= SHORTCHECK   (SHORTCHECK=14)
+ *     copy bytes; exit with dst addr
+ *   move enough bytes to get src to word boundary
+ *   if dst now on word boundary
+ * move_words:
+ *     copy words; branch to finish_up
+ *   if dst now on half word boundary
+ *     load words, shift half words, store words; branch to finish_up
+ *   if dst on byte 1
+ *     load words, shift 3 bytes, store words; branch to finish_up
+ *   if dst on byte 3
+ *     load words, shift 1 byte, store words; branch to finish_up
+ * finish_up:
+ *     copy bytes; exit with dst addr
+ * } else {                                         More than SMALL_MAX bytes
+ *   move bytes until dst is on long word boundary
+ *   if( src is on long word boundary ) {
+ *     if (count < MED_MAX) {
+ * finish_long:					   src/dst aligned on 8 bytes
+ *       copy with ldx/stx in 8-way unrolled loop;
+ *       copy final 0-63 bytes; exit with dst addr
+ *     } else {				     src/dst aligned; count > MED_MAX
+ *       align dst on 64 byte boundary; for main data movement:
+ *       prefetch src data to L2 cache; let HW prefetch move data to L1 cache
+ *       Use BIS (block initializing store) to avoid copying store cache
+ *       lines from memory. But pre-store first element of each cache line
+ *       ST_CHUNK lines in advance of the rest of that cache line. That
+ *       gives time for replacement cache lines to be written back without
+ *       excess STQ and Miss Buffer filling. Repeat until near the end,
+ *       then finish up storing before going to finish_long.
+ *     }
+ *   } else {                                   src/dst not aligned on 8 bytes
+ *     if src is word aligned and count < MED_WMAX
+ *       move words in 8-way unrolled loop
+ *       move final 0-31 bytes; exit with dst addr
+ *     if count < MED_UMAX
+ *       use alignaddr/faligndata combined with ldd/std in 8-way
+ *       unrolled loop to move data.
+ *       go to unalign_done
+ *     else
+ *       setup alignaddr for faligndata instructions
+ *       align dst on 64 byte boundary; prefetch src data to L1 cache
+ *       loadx8, falign, block-store, prefetch loop
+ *	 (only use block-init-store when src/dst on 8 byte boundaries.)
+ * unalign_done:
+ *       move remaining bytes for unaligned cases. exit with dst addr.
+ * }
+ *
+ */
+
+#include <asm/visasm.h>
+#include <asm/asi.h>
+
+#if !defined(EX_LD) && !defined(EX_ST)
+#define NON_USER_COPY
+#endif
+
+#ifndef EX_LD
+#define EX_LD(x,y)	x
+#endif
+#ifndef EX_LD_FP
+#define EX_LD_FP(x,y)	x
+#endif
+
+#ifndef EX_ST
+#define EX_ST(x,y)	x
+#endif
+#ifndef EX_ST_FP
+#define EX_ST_FP(x,y)	x
+#endif
+
+#ifndef EX_RETVAL
+#define EX_RETVAL(x)    x
+#endif
+
+#ifndef LOAD
+#define LOAD(type,addr,dest)	type [addr], dest
+#endif
+
+#ifndef STORE
+#define STORE(type,src,addr)	type src, [addr]
+#endif
+
+/*
+ * ASI_BLK_INIT_QUAD_LDD_P/ASI_BLK_INIT_QUAD_LDD_S marks the cache
+ * line as "least recently used" which means if many threads are
+ * active, it has a high probability of being pushed out of the cache
+ * between the first initializing store and the final stores.
+ * Thus, we use ASI_ST_BLKINIT_MRU_P/ASI_ST_BLKINIT_MRU_S which
+ * marks the cache line as "most recently used" for all
+ * but the last cache line
+ */
+#ifndef STORE_ASI
+#ifndef SIMULATE_NIAGARA_ON_NON_NIAGARA
+#define STORE_ASI	ASI_BLK_INIT_QUAD_LDD_P
+#else
+#define STORE_ASI	0x80		/* ASI_P */
+#endif
+#endif
+
+#ifndef STORE_MRU_ASI
+#ifndef SIMULATE_NIAGARA_ON_NON_NIAGARA
+#define STORE_MRU_ASI	ASI_ST_BLKINIT_MRU_P
+#else
+#define STORE_MRU_ASI	0x80		/* ASI_P */
+#endif
+#endif
+
+#ifndef STORE_INIT
+#define STORE_INIT(src,addr)	stxa src, [addr] STORE_ASI
+#endif
+
+#ifndef STORE_INIT_MRU
+#define STORE_INIT_MRU(src,addr)	stxa src, [addr] STORE_MRU_ASI
+#endif
+
+#ifndef FUNC_NAME
+#define FUNC_NAME	M7memcpy
+#endif
+
+#ifndef PREAMBLE
+#define PREAMBLE
+#endif
+
+#define	BLOCK_SIZE	64
+#define	SHORTCOPY	3
+#define	SHORTCHECK	14
+#define	SHORT_LONG	64	/* max copy for short longword-aligned case */
+				/* must be at least 64 */
+#define	SMALL_MAX	128
+#define	MED_UMAX	1024	/* max copy for medium un-aligned case */
+#define	MED_WMAX	1024	/* max copy for medium word-aligned case */
+#define	MED_MAX		1024	/* max copy for medium longword-aligned case */
+#define ST_CHUNK	24	/* ST_CHUNK - block of values for BIS Store */
+#define ALIGN_PRE	24	/* distance for aligned prefetch loop */
+
+	.register	%g2,#scratch
+
+	.section	".text"
+	.global		FUNC_NAME
+	.type		FUNC_NAME, #function
+	.align		16
+FUNC_NAME:
+	srlx            %o2, 31, %g2
+	cmp             %g2, 0
+	tne             %xcc, 5
+	PREAMBLE
+	mov		%o0, %g1	! save %o0
+	brz,pn          %o2, .Lsmallx
+	 cmp            %o2, 3
+	ble,pn          %icc, .Ltiny_cp
+	 cmp            %o2, 19
+	ble,pn          %icc, .Lsmall_cp
+	 or             %o0, %o1, %g2
+	cmp             %o2, SMALL_MAX
+	bl,pn           %icc, .Lmedium_cp
+	 nop
+
+.Lmedium:
+	neg	%o0, %o5
+	andcc	%o5, 7, %o5		! bytes till DST 8 byte aligned
+	brz,pt	%o5, .Ldst_aligned_on_8
+
+	! %o5 has the bytes to be written in partial store.
+	 sub	%o2, %o5, %o2
+	sub	%o1, %o0, %o1		! %o1 gets the difference
+7:					! dst aligning loop
+	add	%o1, %o0, %o4
+	EX_LD(LOAD(ldub, %o4, %o4), memcpy_retl_o2_plus_o5)	! load one byte
+	subcc	%o5, 1, %o5
+	EX_ST(STORE(stb, %o4, %o0), memcpy_retl_o2_plus_o5_plus_1)
+	bgu,pt	%xcc, 7b
+	 add	%o0, 1, %o0		! advance dst
+	add	%o1, %o0, %o1		! restore %o1
+.Ldst_aligned_on_8:
+	andcc	%o1, 7, %o5
+	brnz,pt	%o5, .Lsrc_dst_unaligned_on_8
+	 nop
+
+.Lsrc_dst_aligned_on_8:
+	! check if we are copying MED_MAX or more bytes
+	set MED_MAX, %o3
+	cmp %o2, %o3 			! limit to store buffer size
+	bgu,pn	%xcc, .Llarge_align8_copy
+	 nop
+
+/*
+ * Special case for handling when src and dest are both long word aligned
+ * and total data to move is less than MED_MAX bytes
+ */
+.Lmedlong:
+	subcc	%o2, 63, %o2		! adjust length to allow cc test
+	ble,pn	%xcc, .Lmedl63		! skip big loop if less than 64 bytes
+	 nop
+.Lmedl64:
+	EX_LD(LOAD(ldx, %o1, %o4), memcpy_retl_o2_plus_63)	! load
+	subcc	%o2, 64, %o2		! decrement length count
+	EX_ST(STORE(stx, %o4, %o0), memcpy_retl_o2_plus_63_64)	! and store
+	EX_LD(LOAD(ldx, %o1+8, %o3), memcpy_retl_o2_plus_63_56)	! a block of 64
+	EX_ST(STORE(stx, %o3, %o0+8), memcpy_retl_o2_plus_63_56)
+	EX_LD(LOAD(ldx, %o1+16, %o4), memcpy_retl_o2_plus_63_48)
+	EX_ST(STORE(stx, %o4, %o0+16), memcpy_retl_o2_plus_63_48)
+	EX_LD(LOAD(ldx, %o1+24, %o3), memcpy_retl_o2_plus_63_40)
+	EX_ST(STORE(stx, %o3, %o0+24), memcpy_retl_o2_plus_63_40)
+	EX_LD(LOAD(ldx, %o1+32, %o4), memcpy_retl_o2_plus_63_32)! load and store
+	EX_ST(STORE(stx, %o4, %o0+32), memcpy_retl_o2_plus_63_32)
+	EX_LD(LOAD(ldx, %o1+40, %o3), memcpy_retl_o2_plus_63_24)! a block of 64
+	add	%o1, 64, %o1		! increase src ptr by 64
+	EX_ST(STORE(stx, %o3, %o0+40), memcpy_retl_o2_plus_63_24)
+	EX_LD(LOAD(ldx, %o1-16, %o4), memcpy_retl_o2_plus_63_16)
+	add	%o0, 64, %o0		! increase dst ptr by 64
+	EX_ST(STORE(stx, %o4, %o0-16), memcpy_retl_o2_plus_63_16)
+	EX_LD(LOAD(ldx, %o1-8, %o3), memcpy_retl_o2_plus_63_8)
+	bgu,pt	%xcc, .Lmedl64		! repeat if at least 64 bytes left
+	 EX_ST(STORE(stx, %o3, %o0-8), memcpy_retl_o2_plus_63_8)
+.Lmedl63:
+	addcc	%o2, 32, %o2		! adjust remaining count
+	ble,pt	%xcc, .Lmedl31		! to skip if 31 or fewer bytes left
+	 nop
+	EX_LD(LOAD(ldx, %o1, %o4), memcpy_retl_o2_plus_31)	! load
+	sub	%o2, 32, %o2		! decrement length count
+	EX_ST(STORE(stx, %o4, %o0), memcpy_retl_o2_plus_31_32)	! and store
+	EX_LD(LOAD(ldx, %o1+8, %o3), memcpy_retl_o2_plus_31_24)	! a block of 32
+	add	%o1, 32, %o1		! increase src ptr by 32
+	EX_ST(STORE(stx, %o3, %o0+8), memcpy_retl_o2_plus_31_24)
+	EX_LD(LOAD(ldx, %o1-16, %o4), memcpy_retl_o2_plus_31_16)
+	add	%o0, 32, %o0		! increase dst ptr by 32
+	EX_ST(STORE(stx, %o4, %o0-16), memcpy_retl_o2_plus_31_16)
+	EX_LD(LOAD(ldx, %o1-8, %o3), memcpy_retl_o2_plus_31_8)
+	EX_ST(STORE(stx, %o3, %o0-8), memcpy_retl_o2_plus_31_8)
+.Lmedl31:
+	addcc	%o2, 16, %o2		! adjust remaining count
+	ble,pt	%xcc, .Lmedl15		! skip if 15 or fewer bytes left
+	 nop				!
+	EX_LD(LOAD(ldx, %o1, %o4), memcpy_retl_o2_plus_15)
+	add	%o1, 16, %o1		! increase src ptr by 16
+	EX_ST(STORE(stx, %o4, %o0), memcpy_retl_o2_plus_15)
+	sub	%o2, 16, %o2		! decrease count by 16
+	EX_LD(LOAD(ldx, %o1-8, %o3), memcpy_retl_o2_plus_15_8)
+	add	%o0, 16, %o0		! increase dst ptr by 16
+	EX_ST(STORE(stx, %o3, %o0-8), memcpy_retl_o2_plus_15_8)
+.Lmedl15:
+	addcc	%o2, 15, %o2		! restore count
+	bz,pt	%xcc, .Lsmallx	! exit if finished
+	 cmp	%o2, 8
+	blt,pt	%xcc, .Lmedw7		! skip if 7 or fewer bytes left
+	 tst	%o2
+	EX_LD(LOAD(ldx, %o1, %o4), memcpy_retl_o2)	! load 8 bytes
+	add	%o1, 8, %o1		! increase src ptr by 8
+	add	%o0, 8, %o0		! increase dst ptr by 8
+	subcc	%o2, 8, %o2		! decrease count by 8
+	bnz,pn	%xcc, .Lmedw7
+	 EX_ST(STORE(stx, %o4, %o0-8), memcpy_retl_o2_plus_8)	! and store 8
+	retl
+	 mov	EX_RETVAL(%g1), %o0	! restore %o0
+
+	.align 16
+.Lsrc_dst_unaligned_on_8:
+	! DST is 8-byte aligned, src is not
+2:
+	andcc	%o1, 0x3, %o5		! test word alignment
+	bnz,pt	%xcc, .Lunalignsetup	! branch to skip if not word aligned
+	 nop
+
+/*
+ * Handle all cases where src and dest are aligned on word
+ * boundaries. Use unrolled loops for better performance.
+ * This option wins over standard large data move when
+ * source and destination is in cache for.Lmedium
+ * to short data moves.
+ */
+	set MED_WMAX, %o3
+	cmp %o2, %o3 			! limit to store buffer size
+	bge,pt	%xcc, .Lunalignrejoin	! otherwise rejoin main loop
+	 nop
+
+	subcc	%o2, 31, %o2		! adjust length to allow cc test
+					! for end of loop
+	ble,pt	%xcc, .Lmedw31		! skip big loop if less than 16
+.Lmedw32:
+	EX_LD(LOAD(ld, %o1, %o4), memcpy_retl_o2_plus_31)! move a block of 32
+	sllx	%o4, 32, %o5
+	EX_LD(LOAD(ld, %o1+4, %o4), memcpy_retl_o2_plus_31)
+	or	%o4, %o5, %o5
+	EX_ST(STORE(stx, %o5, %o0), memcpy_retl_o2_plus_31)
+	subcc	%o2, 32, %o2		! decrement length count
+	EX_LD(LOAD(ld, %o1+8, %o4), memcpy_retl_o2_plus_31_24)
+	sllx	%o4, 32, %o5
+	EX_LD(LOAD(ld, %o1+12, %o4), memcpy_retl_o2_plus_31_24)
+	or	%o4, %o5, %o5
+	EX_ST(STORE(stx, %o5, %o0+8), memcpy_retl_o2_plus_31_24)
+	add	%o1, 32, %o1		! increase src ptr by 32
+	EX_LD(LOAD(ld, %o1-16, %o4), memcpy_retl_o2_plus_31_16)
+	sllx	%o4, 32, %o5
+	EX_LD(LOAD(ld, %o1-12, %o4), memcpy_retl_o2_plus_31_16)
+	or	%o4, %o5, %o5
+	EX_ST(STORE(stx, %o5, %o0+16), memcpy_retl_o2_plus_31_16)
+	add	%o0, 32, %o0		! increase dst ptr by 32
+	EX_LD(LOAD(ld, %o1-8, %o4), memcpy_retl_o2_plus_31_8)
+	sllx	%o4, 32, %o5
+	EX_LD(LOAD(ld, %o1-4, %o4), memcpy_retl_o2_plus_31_8)
+	or	%o4, %o5, %o5
+	bgu,pt	%xcc, .Lmedw32		! repeat if at least 32 bytes left
+	 EX_ST(STORE(stx, %o5, %o0-8), memcpy_retl_o2_plus_31_8)
+.Lmedw31:
+	addcc	%o2, 31, %o2		! restore count
+
+	bz,pt	%xcc, .Lsmallx	! exit if finished
+	 nop
+	cmp	%o2, 16
+	blt,pt	%xcc, .Lmedw15
+	 nop
+	EX_LD(LOAD(ld, %o1, %o4), memcpy_retl_o2)! move a block of 16 bytes
+	sllx	%o4, 32, %o5
+	subcc	%o2, 16, %o2		! decrement length count
+	EX_LD(LOAD(ld, %o1+4, %o4), memcpy_retl_o2_plus_16)
+	or	%o4, %o5, %o5
+	EX_ST(STORE(stx, %o5, %o0), memcpy_retl_o2_plus_16)
+	add	%o1, 16, %o1		! increase src ptr by 16
+	EX_LD(LOAD(ld, %o1-8, %o4), memcpy_retl_o2_plus_8)
+	add	%o0, 16, %o0		! increase dst ptr by 16
+	sllx	%o4, 32, %o5
+	EX_LD(LOAD(ld, %o1-4, %o4), memcpy_retl_o2_plus_8)
+	or	%o4, %o5, %o5
+	EX_ST(STORE(stx, %o5, %o0-8), memcpy_retl_o2_plus_8)
+.Lmedw15:
+	bz,pt	%xcc, .Lsmallx	! exit if finished
+	 cmp	%o2, 8
+	blt,pn	%xcc, .Lmedw7		! skip if 7 or fewer bytes left
+	 tst	%o2
+	EX_LD(LOAD(ld, %o1, %o4), memcpy_retl_o2)	! load 4 bytes
+	subcc	%o2, 8, %o2		! decrease count by 8
+	EX_ST(STORE(stw, %o4, %o0), memcpy_retl_o2_plus_8)! and store 4 bytes
+	add	%o1, 8, %o1		! increase src ptr by 8
+	EX_LD(LOAD(ld, %o1-4, %o3), memcpy_retl_o2_plus_4)	! load 4 bytes
+	add	%o0, 8, %o0		! increase dst ptr by 8
+	EX_ST(STORE(stw, %o3, %o0-4), memcpy_retl_o2_plus_4)! and store 4 bytes
+	bz,pt	%xcc, .Lsmallx	! exit if finished
+.Lmedw7:				! count is ge 1, less than 8
+	cmp	%o2, 4			! check for 4 bytes left
+	blt,pn	%xcc, .Lsmallleft3	! skip if 3 or fewer bytes left
+	 nop				!
+	EX_LD(LOAD(ld, %o1, %o4), memcpy_retl_o2)	! load 4 bytes
+	add	%o1, 4, %o1		! increase src ptr by 4
+	add	%o0, 4, %o0		! increase dst ptr by 4
+	subcc	%o2, 4, %o2		! decrease count by 4
+	bnz	.Lsmallleft3
+	 EX_ST(STORE(stw, %o4, %o0-4), memcpy_retl_o2_plus_4)! and store 4 bytes
+	retl
+	 mov	EX_RETVAL(%g1), %o0
+
+	.align 16
+.Llarge_align8_copy:			! Src and dst share 8 byte alignment
+	! align dst to 64 byte boundary
+	andcc	%o0, 0x3f, %o3		! %o3 == 0 means dst is 64 byte aligned
+	brz,pn	%o3, .Laligned_to_64
+	 andcc	%o0, 8, %o3		! odd long words to move?
+	brz,pt	%o3, .Laligned_to_16
+	 nop
+	EX_LD(LOAD(ldx, %o1, %o4), memcpy_retl_o2)
+	sub	%o2, 8, %o2
+	add	%o1, 8, %o1		! increment src ptr
+	add	%o0, 8, %o0		! increment dst ptr
+	EX_ST(STORE(stx, %o4, %o0-8), memcpy_retl_o2_plus_8)
+.Laligned_to_16:
+	andcc	%o0, 16, %o3		! pair of long words to move?
+	brz,pt	%o3, .Laligned_to_32
+	 nop
+	EX_LD(LOAD(ldx, %o1, %o4), memcpy_retl_o2)
+	sub	%o2, 16, %o2
+	EX_ST(STORE(stx, %o4, %o0), memcpy_retl_o2_plus_16)
+	add	%o1, 16, %o1		! increment src ptr
+	EX_LD(LOAD(ldx, %o1-8, %o4), memcpy_retl_o2_plus_8)
+	add	%o0, 16, %o0		! increment dst ptr
+	EX_ST(STORE(stx, %o4, %o0-8), memcpy_retl_o2_plus_8)
+.Laligned_to_32:
+	andcc	%o0, 32, %o3		! four long words to move?
+	brz,pt	%o3, .Laligned_to_64
+	 nop
+	EX_LD(LOAD(ldx, %o1, %o4), memcpy_retl_o2)
+	sub	%o2, 32, %o2
+	EX_ST(STORE(stx, %o4, %o0), memcpy_retl_o2_plus_32)
+	EX_LD(LOAD(ldx, %o1+8, %o4), memcpy_retl_o2_plus_24)
+	EX_ST(STORE(stx, %o4, %o0+8), memcpy_retl_o2_plus_24)
+	EX_LD(LOAD(ldx, %o1+16, %o4), memcpy_retl_o2_plus_16)
+	EX_ST(STORE(stx, %o4, %o0+16), memcpy_retl_o2_plus_16)
+	add	%o1, 32, %o1		! increment src ptr
+	EX_LD(LOAD(ldx, %o1-8, %o4), memcpy_retl_o2_plus_8)
+	add	%o0, 32, %o0		! increment dst ptr
+	EX_ST(STORE(stx, %o4, %o0-8), memcpy_retl_o2_plus_8)
+.Laligned_to_64:
+!
+!	Using block init store (BIS) instructions to avoid fetching cache
+!	lines from memory. Use ST_CHUNK stores to first element of each cache
+!	line (similar to prefetching) to avoid overfilling STQ or miss buffers.
+!	Gives existing cache lines time to be moved out of L1/L2/L3 cache.
+!	Initial stores using MRU version of BIS to keep cache line in
+!	cache until we are ready to store final element of cache line.
+!	Then store last element using the LRU version of BIS.
+!
+	andn	%o2, 0x3f, %o5		! %o5 is multiple of block size
+	and	%o2, 0x3f, %o2		! residue bytes in %o2
+!
+!	We use STORE_MRU_ASI for the first seven stores to each cache line
+!	followed by STORE_ASI (mark as LRU) for the last store. That
+!	mixed approach reduces the probability that the cache line is removed
+!	before we finish setting it, while minimizing the effects on
+!	other cached values during a large memcpy
+!
+!	ST_CHUNK batches up initial BIS operations for several cache lines
+!	to allow multiple requests to not be blocked by overflowing the
+!	the store miss buffer. Then the matching stores for all those
+!	BIS operations are executed.
+!
+
+	sub	%o0, 8, %o0		! adjust %o0 for ASI alignment
+.Lalign_loop:
+	cmp	%o5, ST_CHUNK*64
+	blu,pt	%xcc, .Lalign_loop_fin
+	 mov	ST_CHUNK,%o3
+.Lalign_loop_start:
+	prefetch [%o1 + (ALIGN_PRE * BLOCK_SIZE)], 21
+	subcc	%o3, 1, %o3
+	EX_LD(LOAD(ldx, %o1, %o4), memcpy_retl_o2_plus_o5)
+	add	%o1, 64, %o1
+	add	%o0, 8, %o0
+	EX_ST(STORE_INIT_MRU(%o4, %o0), memcpy_retl_o2_plus_o5)
+	bgu	%xcc,.Lalign_loop_start
+	 add	%o0, 56, %o0
+
+	mov	ST_CHUNK,%o3
+	sllx	%o3, 6, %o4		! ST_CHUNK*64
+	sub	%o1, %o4, %o1		! reset %o1
+	sub	%o0, %o4, %o0		! reset %o0
+
+.Lalign_loop_rest:
+	EX_LD(LOAD(ldx, %o1+8, %o4), memcpy_retl_o2_plus_o5)
+	add	%o0, 16, %o0
+	EX_ST(STORE_INIT_MRU(%o4, %o0), memcpy_retl_o2_plus_o5)
+	EX_LD(LOAD(ldx, %o1+16, %o4), memcpy_retl_o2_plus_o5)
+	add	%o0, 8, %o0
+	EX_ST(STORE_INIT_MRU(%o4, %o0), memcpy_retl_o2_plus_o5)
+	subcc	%o3, 1, %o3
+	EX_LD(LOAD(ldx, %o1+24, %o4), memcpy_retl_o2_plus_o5)
+	add	%o0, 8, %o0
+	EX_ST(STORE_INIT_MRU(%o4, %o0), memcpy_retl_o2_plus_o5)
+	EX_LD(LOAD(ldx, %o1+32, %o4), memcpy_retl_o2_plus_o5)
+	add	%o0, 8, %o0
+	EX_ST(STORE_INIT_MRU(%o4, %o0), memcpy_retl_o2_plus_o5)
+	EX_LD(LOAD(ldx, %o1+40, %o4), memcpy_retl_o2_plus_o5)
+	add	%o0, 8, %o0
+	EX_ST(STORE_INIT_MRU(%o4, %o0), memcpy_retl_o2_plus_o5)
+	EX_LD(LOAD(ldx, %o1+48, %o4), memcpy_retl_o2_plus_o5)
+	add	%o1, 64, %o1
+	add	%o0, 8, %o0
+	EX_ST(STORE_INIT_MRU(%o4, %o0), memcpy_retl_o2_plus_o5)
+	add	%o0, 8, %o0
+	EX_LD(LOAD(ldx, %o1-8, %o4), memcpy_retl_o2_plus_o5)
+	sub	%o5, 64, %o5
+	bgu	%xcc,.Lalign_loop_rest
+	! mark cache line as LRU
+	 EX_ST(STORE_INIT(%o4, %o0), memcpy_retl_o2_plus_o5_plus_64)
+
+	cmp	%o5, ST_CHUNK*64
+	bgu,pt	%xcc, .Lalign_loop_start
+	 mov	ST_CHUNK,%o3
+
+	cmp	%o5, 0
+	beq	.Lalign_done
+	 nop
+.Lalign_loop_fin:
+	EX_LD(LOAD(ldx, %o1, %o4), memcpy_retl_o2_plus_o5)
+	EX_ST(STORE(stx, %o4, %o0+8), memcpy_retl_o2_plus_o5)
+	EX_LD(LOAD(ldx, %o1+8, %o4), memcpy_retl_o2_plus_o5)
+	EX_ST(STORE(stx, %o4, %o0+8+8), memcpy_retl_o2_plus_o5)
+	EX_LD(LOAD(ldx, %o1+16, %o4), memcpy_retl_o2_plus_o5)
+	EX_ST(STORE(stx, %o4, %o0+8+16), memcpy_retl_o2_plus_o5)
+	subcc	%o5, 64, %o5
+	EX_LD(LOAD(ldx, %o1+24, %o4), memcpy_retl_o2_plus_o5_64)
+	EX_ST(STORE(stx, %o4, %o0+8+24), memcpy_retl_o2_plus_o5_64)
+	EX_LD(LOAD(ldx, %o1+32, %o4), memcpy_retl_o2_plus_o5_64)
+	EX_ST(STORE(stx, %o4, %o0+8+32), memcpy_retl_o2_plus_o5_64)
+	EX_LD(LOAD(ldx, %o1+40, %o4), memcpy_retl_o2_plus_o5_64)
+	EX_ST(STORE(stx, %o4, %o0+8+40), memcpy_retl_o2_plus_o5_64)
+	EX_LD(LOAD(ldx, %o1+48, %o4), memcpy_retl_o2_plus_o5_64)
+	add	%o1, 64, %o1
+	EX_ST(STORE(stx, %o4, %o0+8+48), memcpy_retl_o2_plus_o5_64)
+	add	%o0, 64, %o0
+	EX_LD(LOAD(ldx, %o1-8, %o4), memcpy_retl_o2_plus_o5_64)
+	bgu	%xcc,.Lalign_loop_fin
+	 EX_ST(STORE(stx, %o4, %o0), memcpy_retl_o2_plus_o5_64)
+
+.Lalign_done:
+	add	%o0, 8, %o0		! restore %o0 from ASI alignment
+	membar	#StoreStore
+	sub	%o2, 63, %o2		! adjust length to allow cc test
+	ba	.Lmedl63		! in .Lmedl63
+	 nop
+
+	.align 16
+	! Dst is on 8 byte boundary; src is not; remaining count > SMALL_MAX
+.Lunalignsetup:
+.Lunalignrejoin:
+	mov	%g1, %o3	! save %g1 as VISEntryHalf clobbers it
+#ifdef NON_USER_COPY
+	VISEntryHalfFast(.Lmedium_vis_entry_fail_cp)
+#else
+	VISEntryHalf
+#endif
+	mov	%o3, %g1	! restore %g1
+
+	set MED_UMAX, %o3
+	cmp %o2, %o3 		! check for.Lmedium unaligned limit
+	bge,pt	%xcc,.Lunalign_large
+	 prefetch [%o1 + (4 * BLOCK_SIZE)], 20
+	andn	%o2, 0x3f, %o5		! %o5 is multiple of block size
+	and	%o2, 0x3f, %o2		! residue bytes in %o2
+	cmp	%o2, 8			! Insure we do not load beyond
+	bgt	.Lunalign_adjust	! end of source buffer
+	 andn	%o1, 0x7, %o4		! %o4 has long word aligned src address
+	add	%o2, 64, %o2		! adjust to leave loop
+	sub	%o5, 64, %o5		! early if necessary
+.Lunalign_adjust:
+	alignaddr %o1, %g0, %g0		! generate %gsr
+	add	%o1, %o5, %o1		! advance %o1 to after blocks
+	EX_LD_FP(LOAD(ldd, %o4, %f0), memcpy_retl_o2_plus_o5)
+.Lunalign_loop:
+	EX_LD_FP(LOAD(ldd, %o4+8, %f2), memcpy_retl_o2_plus_o5)
+	faligndata %f0, %f2, %f16
+	EX_LD_FP(LOAD(ldd, %o4+16, %f4), memcpy_retl_o2_plus_o5)
+	subcc	%o5, BLOCK_SIZE, %o5
+	EX_ST_FP(STORE(std, %f16, %o0), memcpy_retl_o2_plus_o5_plus_64)
+	faligndata %f2, %f4, %f18
+	EX_LD_FP(LOAD(ldd, %o4+24, %f6), memcpy_retl_o2_plus_o5_plus_56)
+	EX_ST_FP(STORE(std, %f18, %o0+8), memcpy_retl_o2_plus_o5_plus_56)
+	faligndata %f4, %f6, %f20
+	EX_LD_FP(LOAD(ldd, %o4+32, %f8), memcpy_retl_o2_plus_o5_plus_48)
+	EX_ST_FP(STORE(std, %f20, %o0+16), memcpy_retl_o2_plus_o5_plus_48)
+	faligndata %f6, %f8, %f22
+	EX_LD_FP(LOAD(ldd, %o4+40, %f10), memcpy_retl_o2_plus_o5_plus_40)
+	EX_ST_FP(STORE(std, %f22, %o0+24), memcpy_retl_o2_plus_o5_plus_40)
+	faligndata %f8, %f10, %f24
+	EX_LD_FP(LOAD(ldd, %o4+48, %f12), memcpy_retl_o2_plus_o5_plus_32)
+	EX_ST_FP(STORE(std, %f24, %o0+32), memcpy_retl_o2_plus_o5_plus_32)
+	faligndata %f10, %f12, %f26
+	EX_LD_FP(LOAD(ldd, %o4+56, %f14), memcpy_retl_o2_plus_o5_plus_24)
+	add	%o4, BLOCK_SIZE, %o4
+	EX_ST_FP(STORE(std, %f26, %o0+40), memcpy_retl_o2_plus_o5_plus_24)
+	faligndata %f12, %f14, %f28
+	EX_LD_FP(LOAD(ldd, %o4, %f0), memcpy_retl_o2_plus_o5_plus_16)
+	EX_ST_FP(STORE(std, %f28, %o0+48), memcpy_retl_o2_plus_o5_plus_16)
+	faligndata %f14, %f0, %f30
+	EX_ST_FP(STORE(std, %f30, %o0+56), memcpy_retl_o2_plus_o5_plus_8)
+	add	%o0, BLOCK_SIZE, %o0
+	bgu,pt	%xcc, .Lunalign_loop
+	 prefetch [%o4 + (5 * BLOCK_SIZE)], 20
+	ba	.Lunalign_done
+	 nop
+
+.Lunalign_large:
+	andcc	%o0, 0x3f, %o3		! is dst 64-byte block aligned?
+	bz	%xcc, .Lunalignsrc
+	 sub	%o3, 64, %o3		! %o3 will be multiple of 8
+	neg	%o3			! bytes until dest is 64 byte aligned
+	sub	%o2, %o3, %o2		! update cnt with bytes to be moved
+	! Move bytes according to source alignment
+	andcc	%o1, 0x1, %o5
+	bnz	%xcc, .Lunalignbyte	! check for byte alignment
+	 nop
+	andcc	%o1, 2, %o5		! check for half word alignment
+	bnz	%xcc, .Lunalignhalf
+	 nop
+	! Src is word aligned
+.Lunalignword:
+	EX_LD_FP(LOAD(ld, %o1, %o4), memcpy_retl_o2_plus_o3)	! load 4 bytes
+	add	%o1, 8, %o1		! increase src ptr by 8
+	EX_ST_FP(STORE(stw, %o4, %o0), memcpy_retl_o2_plus_o3)	! and store 4
+	subcc	%o3, 8, %o3		! decrease count by 8
+	EX_LD_FP(LOAD(ld, %o1-4, %o4), memcpy_retl_o2_plus_o3_plus_4)! load 4
+	add	%o0, 8, %o0		! increase dst ptr by 8
+	bnz	%xcc, .Lunalignword
+	 EX_ST_FP(STORE(stw, %o4, %o0-4), memcpy_retl_o2_plus_o3_plus_4)
+	ba	.Lunalignsrc
+	 nop
+
+	! Src is half-word aligned
+.Lunalignhalf:
+	EX_LD_FP(LOAD(lduh, %o1, %o4), memcpy_retl_o2_plus_o3)	! load 2 bytes
+	sllx	%o4, 32, %o5		! shift left
+	EX_LD_FP(LOAD(lduw, %o1+2, %o4), memcpy_retl_o2_plus_o3)
+	or	%o4, %o5, %o5
+	sllx	%o5, 16, %o5
+	EX_LD_FP(LOAD(lduh, %o1+6, %o4), memcpy_retl_o2_plus_o3)
+	or	%o4, %o5, %o5
+	EX_ST_FP(STORE(stx, %o5, %o0), memcpy_retl_o2_plus_o3)
+	add	%o1, 8, %o1
+	subcc	%o3, 8, %o3
+	bnz	%xcc, .Lunalignhalf
+	 add	%o0, 8, %o0
+	ba	.Lunalignsrc
+	 nop
+
+	! Src is Byte aligned
+.Lunalignbyte:
+	sub	%o0, %o1, %o0		! share pointer advance
+.Lunalignbyte_loop:
+	EX_LD_FP(LOAD(ldub, %o1, %o4), memcpy_retl_o2_plus_o3)
+	sllx	%o4, 56, %o5
+	EX_LD_FP(LOAD(lduh, %o1+1, %o4), memcpy_retl_o2_plus_o3)
+	sllx	%o4, 40, %o4
+	or	%o4, %o5, %o5
+	EX_LD_FP(LOAD(lduh, %o1+3, %o4), memcpy_retl_o2_plus_o3)
+	sllx	%o4, 24, %o4
+	or	%o4, %o5, %o5
+	EX_LD_FP(LOAD(lduh, %o1+5, %o4), memcpy_retl_o2_plus_o3)
+	sllx	%o4,  8, %o4
+	or	%o4, %o5, %o5
+	EX_LD_FP(LOAD(ldub, %o1+7, %o4), memcpy_retl_o2_plus_o3)
+	or	%o4, %o5, %o5
+	add	%o0, %o1, %o0
+	EX_ST_FP(STORE(stx, %o5, %o0), memcpy_retl_o2_plus_o3)
+	sub	%o0, %o1, %o0
+	subcc	%o3, 8, %o3
+	bnz	%xcc, .Lunalignbyte_loop
+	 add	%o1, 8, %o1
+	add	%o0,%o1, %o0 		! restore pointer
+
+	! Destination is now block (64 byte aligned)
+.Lunalignsrc:
+	andn	%o2, 0x3f, %o5		! %o5 is multiple of block size
+	and	%o2, 0x3f, %o2		! residue bytes in %o2
+	add	%o2, 64, %o2		! Insure we do not load beyond
+	sub	%o5, 64, %o5		! end of source buffer
+
+	andn	%o1, 0x7, %o4		! %o4 has long word aligned src address
+	alignaddr %o1, %g0, %g0		! generate %gsr
+	add	%o1, %o5, %o1		! advance %o1 to after blocks
+
+	EX_LD_FP(LOAD(ldd, %o4, %f14), memcpy_retl_o2_plus_o5)
+	add	%o4, 8, %o4
+.Lunalign_sloop:
+	EX_LD_FP(LOAD(ldd, %o4, %f16), memcpy_retl_o2_plus_o5)
+	faligndata %f14, %f16, %f0
+	EX_LD_FP(LOAD(ldd, %o4+8, %f18), memcpy_retl_o2_plus_o5)
+	faligndata %f16, %f18, %f2
+	EX_LD_FP(LOAD(ldd, %o4+16, %f20), memcpy_retl_o2_plus_o5)
+	faligndata %f18, %f20, %f4
+	EX_ST_FP(STORE(std, %f0, %o0), memcpy_retl_o2_plus_o5)
+	subcc	%o5, 64, %o5
+	EX_LD_FP(LOAD(ldd, %o4+24, %f22), memcpy_retl_o2_plus_o5_plus_56)
+	faligndata %f20, %f22, %f6
+	EX_ST_FP(STORE(std, %f2, %o0+8), memcpy_retl_o2_plus_o5_plus_56)
+	EX_LD_FP(LOAD(ldd, %o4+32, %f24), memcpy_retl_o2_plus_o5_plus_48)
+	faligndata %f22, %f24, %f8
+	EX_ST_FP(STORE(std, %f4, %o0+16), memcpy_retl_o2_plus_o5_plus_48)
+	EX_LD_FP(LOAD(ldd, %o4+40, %f26), memcpy_retl_o2_plus_o5_plus_40)
+	faligndata %f24, %f26, %f10
+	EX_ST_FP(STORE(std, %f6, %o0+24), memcpy_retl_o2_plus_o5_plus_40)
+	EX_LD_FP(LOAD(ldd, %o4+48, %f28), memcpy_retl_o2_plus_o5_plus_40)
+	faligndata %f26, %f28, %f12
+	EX_ST_FP(STORE(std, %f8, %o0+32), memcpy_retl_o2_plus_o5_plus_40)
+	add	%o4, 64, %o4
+	EX_LD_FP(LOAD(ldd, %o4-8, %f30), memcpy_retl_o2_plus_o5_plus_40)
+	faligndata %f28, %f30, %f14
+	EX_ST_FP(STORE(std, %f10, %o0+40), memcpy_retl_o2_plus_o5_plus_40)
+	EX_ST_FP(STORE(std, %f12, %o0+48), memcpy_retl_o2_plus_o5_plus_40)
+	add	%o0, 64, %o0
+	EX_ST_FP(STORE(std, %f14, %o0-8), memcpy_retl_o2_plus_o5_plus_40)
+	fsrc2	%f30, %f14
+	bgu,pt	%xcc, .Lunalign_sloop
+	 prefetch [%o4 + (8 * BLOCK_SIZE)], 20
+
+.Lunalign_done:
+	! Handle trailing bytes, 64 to 127
+	! Dest long word aligned, Src not long word aligned
+	cmp	%o2, 15
+	bleu	%xcc, .Lunalign_short
+
+	 andn	%o2, 0x7, %o5		! %o5 is multiple of 8
+	and	%o2, 0x7, %o2		! residue bytes in %o2
+	add	%o2, 8, %o2
+	sub	%o5, 8, %o5		! insure we do not load past end of src
+	andn	%o1, 0x7, %o4		! %o4 has long word aligned src address
+	add	%o1, %o5, %o1		! advance %o1 to after multiple of 8
+	EX_LD_FP(LOAD(ldd, %o4, %f0), memcpy_retl_o2_plus_o5)! fetch partialword
+.Lunalign_by8:
+	EX_LD_FP(LOAD(ldd, %o4+8, %f2), memcpy_retl_o2_plus_o5)
+	add	%o4, 8, %o4
+	faligndata %f0, %f2, %f16
+	subcc	%o5, 8, %o5
+	EX_ST_FP(STORE(std, %f16, %o0), memcpy_retl_o2_plus_o5)
+	fsrc2	%f2, %f0
+	bgu,pt	%xcc, .Lunalign_by8
+	 add	%o0, 8, %o0
+
+.Lunalign_short:
+#ifdef NON_USER_COPY
+	VISExitHalfFast
+#else
+	VISExitHalf
+#endif
+	ba	.Lsmallrest
+	 nop
+
+/*
+ * This is a special case of nested memcpy. This can happen when kernel
+ * calls unaligned memcpy back to back without saving FP registers. We need
+ * traps(context switch) to save/restore FP registers. If the kernel calls
+ * memcpy without this trap sequence we will hit FP corruption. Let's use
+ * the normal integer load/store method in this case.
+ */
+
+#ifdef NON_USER_COPY
+.Lmedium_vis_entry_fail_cp:
+	or	%o0, %o1, %g2
+#endif
+.Lmedium_cp:
+	LOAD(prefetch, %o1 + 0x40, #n_reads_strong)
+	andcc	%g2, 0x7, %g0
+	bne,pn	%xcc, .Lmedium_unaligned_cp
+	 nop
+
+.Lmedium_noprefetch_cp:
+	andncc	%o2, 0x20 - 1, %o5
+	be,pn	%xcc, 2f
+	 sub	%o2, %o5, %o2
+1:	EX_LD(LOAD(ldx, %o1 + 0x00, %o3), memcpy_retl_o2_plus_o5)
+	EX_LD(LOAD(ldx, %o1 + 0x08, %g2), memcpy_retl_o2_plus_o5)
+	EX_LD(LOAD(ldx, %o1 + 0x10, %g7), memcpy_retl_o2_plus_o5)
+	EX_LD(LOAD(ldx, %o1 + 0x18, %o4), memcpy_retl_o2_plus_o5)
+	add	%o1, 0x20, %o1
+	subcc	%o5, 0x20, %o5
+	EX_ST(STORE(stx, %o3, %o0 + 0x00), memcpy_retl_o2_plus_o5_plus_32)
+	EX_ST(STORE(stx, %g2, %o0 + 0x08), memcpy_retl_o2_plus_o5_plus_24)
+	EX_ST(STORE(stx, %g7, %o0 + 0x10), memcpy_retl_o2_plus_o5_plus_24)
+	EX_ST(STORE(stx, %o4, %o0 + 0x18), memcpy_retl_o2_plus_o5_plus_8)
+	bne,pt	%xcc, 1b
+	 add	%o0, 0x20, %o0
+2:	andcc	%o2, 0x18, %o5
+	be,pt	%xcc, 3f
+	 sub	%o2, %o5, %o2
+1:	EX_LD(LOAD(ldx, %o1 + 0x00, %o3), memcpy_retl_o2_plus_o5)
+	add	%o1, 0x08, %o1
+	add	%o0, 0x08, %o0
+	subcc	%o5, 0x08, %o5
+	bne,pt	%xcc, 1b
+	 EX_ST(STORE(stx, %o3, %o0 - 0x08), memcpy_retl_o2_plus_o5_plus_8)
+3:	brz,pt	%o2, .Lexit_cp
+	 cmp	%o2, 0x04
+	bl,pn	%xcc, .Ltiny_cp
+	 nop
+	EX_LD(LOAD(lduw, %o1 + 0x00, %o3), memcpy_retl_o2)
+	add	%o1, 0x04, %o1
+	add	%o0, 0x04, %o0
+	subcc	%o2, 0x04, %o2
+	bne,pn	%xcc, .Ltiny_cp
+	 EX_ST(STORE(stw, %o3, %o0 - 0x04), memcpy_retl_o2_plus_4)
+	ba,a,pt	%xcc, .Lexit_cp
+
+.Lmedium_unaligned_cp:
+	/* First get dest 8 byte aligned.  */
+	sub	%g0, %o0, %o3
+	and	%o3, 0x7, %o3
+	brz,pt	%o3, 2f
+	 sub	%o2, %o3, %o2
+
+1:	EX_LD(LOAD(ldub, %o1 + 0x00, %g2), memcpy_retl_o2_plus_g1)
+	add	%o1, 1, %o1
+	subcc	%o3, 1, %o3
+	add	%o0, 1, %o0
+	bne,pt	%xcc, 1b
+	 EX_ST(STORE(stb, %g2, %o0 - 0x01), memcpy_retl_o2_plus_g1_plus_1)
+2:
+	and	%o1, 0x7, %o3
+	brz,pn	%o3, .Lmedium_noprefetch_cp
+	 sll	%o3, 3, %o3
+	mov	64, %g2
+	sub	%g2, %o3, %g2
+	andn	%o1, 0x7, %o1
+	EX_LD(LOAD(ldx, %o1 + 0x00, %o4), memcpy_retl_o2)
+	sllx	%o4, %o3, %o4
+	andn	%o2, 0x08 - 1, %o5
+	sub	%o2, %o5, %o2
+
+1:	EX_LD(LOAD(ldx, %o1 + 0x08, %g3), memcpy_retl_o2_plus_o5)
+	add	%o1, 0x08, %o1
+	subcc	%o5, 0x08, %o5
+	srlx	%g3, %g2, %g7
+	or	%g7, %o4, %g7
+	EX_ST(STORE(stx, %g7, %o0 + 0x00), memcpy_retl_o2_plus_o5_plus_8)
+	add	%o0, 0x08, %o0
+	bne,pt	%xcc, 1b
+	 sllx	%g3, %o3, %o4
+	srl	%o3, 3, %o3
+	add	%o1, %o3, %o1
+	brz,pn	%o2, .Lexit_cp
+	 nop
+	ba,pt	%xcc, .Lsmall_unaligned_cp
+
+.Ltiny_cp:
+	EX_LD(LOAD(ldub, %o1 + 0x00, %o3), memcpy_retl_o2)
+	subcc	%o2, 1, %o2
+	be,pn	%xcc, .Lexit_cp
+	 EX_ST(STORE(stb, %o3, %o0 + 0x00), memcpy_retl_o2_plus_1)
+	EX_LD(LOAD(ldub, %o1 + 0x01, %o3), memcpy_retl_o2)
+	subcc	%o2, 1, %o2
+	be,pn	%xcc, .Lexit_cp
+	 EX_ST(STORE(stb, %o3, %o0 + 0x01), memcpy_retl_o2_plus_1)
+	EX_LD(LOAD(ldub, %o1 + 0x02, %o3), memcpy_retl_o2)
+	ba,pt	%xcc, .Lexit_cp
+	 EX_ST(STORE(stb, %o3, %o0 + 0x02), memcpy_retl_o2)
+
+.Lsmall_cp:
+	andcc	%g2, 0x3, %g0
+	bne,pn	%xcc, .Lsmall_unaligned_cp
+	 andn	%o2, 0x4 - 1, %o5
+	sub	%o2, %o5, %o2
+1:
+	EX_LD(LOAD(lduw, %o1 + 0x00, %o3), memcpy_retl_o2_plus_o5)
+	add	%o1, 0x04, %o1
+	subcc	%o5, 0x04, %o5
+	add	%o0, 0x04, %o0
+	bne,pt	%xcc, 1b
+	 EX_ST(STORE(stw, %o3, %o0 - 0x04), memcpy_retl_o2_plus_o5_plus_4)
+	brz,pt	%o2, .Lexit_cp
+	 nop
+	ba,a,pt	%xcc, .Ltiny_cp
+
+.Lsmall_unaligned_cp:
+1:	EX_LD(LOAD(ldub, %o1 + 0x00, %o3), memcpy_retl_o2)
+	add	%o1, 1, %o1
+	add	%o0, 1, %o0
+	subcc	%o2, 1, %o2
+	bne,pt	%xcc, 1b
+	 EX_ST(STORE(stb, %o3, %o0 - 0x01), memcpy_retl_o2_plus_1)
+	ba,a,pt	%xcc, .Lexit_cp
+
+.Lsmallrest:
+	tst	%o2
+	bz,pt	%xcc, .Lsmallx
+	 cmp	%o2, 4
+	blt,pn	%xcc, .Lsmallleft3
+	 nop
+	sub	%o2, 3, %o2
+.Lsmallnotalign4:
+	EX_LD(LOAD(ldub, %o1, %o3), memcpy_retl_o2_plus_3)! read byte
+	subcc	%o2, 4, %o2		! reduce count by 4
+	EX_ST(STORE(stb, %o3, %o0), memcpy_retl_o2_plus_7)! write byte & repeat
+	EX_LD(LOAD(ldub, %o1+1, %o3), memcpy_retl_o2_plus_6)! for total of 4
+	add	%o1, 4, %o1		! advance SRC by 4
+	EX_ST(STORE(stb, %o3, %o0+1), memcpy_retl_o2_plus_6)
+	EX_LD(LOAD(ldub, %o1-2, %o3), memcpy_retl_o2_plus_5)
+	add	%o0, 4, %o0		! advance DST by 4
+	EX_ST(STORE(stb, %o3, %o0-2), memcpy_retl_o2_plus_5)
+	EX_LD(LOAD(ldub, %o1-1, %o3), memcpy_retl_o2_plus_4)
+	bgu,pt	%xcc, .Lsmallnotalign4	! loop til 3 or fewer bytes remain
+	EX_ST(STORE(stb, %o3, %o0-1), memcpy_retl_o2_plus_4)
+	addcc	%o2, 3, %o2		! restore count
+	bz,pt	%xcc, .Lsmallx
+.Lsmallleft3:				! 1, 2, or 3 bytes remain
+	subcc	%o2, 1, %o2
+	EX_LD(LOAD(ldub, %o1, %o3), memcpy_retl_o2_plus_1)	! load one byte
+	bz,pt	%xcc, .Lsmallx
+	EX_ST(STORE(stb, %o3, %o0), memcpy_retl_o2_plus_1)	! store one byte
+	EX_LD(LOAD(ldub, %o1+1, %o3), memcpy_retl_o2)	! load second byte
+	subcc	%o2, 1, %o2
+	bz,pt	%xcc, .Lsmallx
+	EX_ST(STORE(stb, %o3, %o0+1), memcpy_retl_o2_plus_1)! store second byte
+	EX_LD(LOAD(ldub, %o1+2, %o3), memcpy_retl_o2)	! load third byte
+	EX_ST(STORE(stb, %o3, %o0+2), memcpy_retl_o2)	! store third byte
+.Lsmallx:
+	retl
+	 mov	EX_RETVAL(%g1), %o0
+.Lsmallfin:
+	tst	%o2
+	bnz,pn	%xcc, .Lsmallleft3
+	 nop
+	retl
+	 mov	EX_RETVAL(%g1), %o0	! restore %o0
+.Lexit_cp:
+	retl
+	 mov	EX_RETVAL(%g1), %o0
+	.size  FUNC_NAME, .-FUNC_NAME
diff --git a/arch/sparc/lib/M7memset.S b/arch/sparc/lib/M7memset.S
new file mode 100644
index 000000000..62ea91b3a
--- /dev/null
+++ b/arch/sparc/lib/M7memset.S
@@ -0,0 +1,352 @@
+/*
+ * M7memset.S: SPARC M7 optimized memset.
+ *
+ * Copyright (c) 2016, Oracle and/or its affiliates.  All rights reserved.
+ */
+
+/*
+ * M7memset.S: M7 optimized memset.
+ *
+ * char *memset(sp, c, n)
+ *
+ * Set an array of n chars starting at sp to the character c.
+ * Return sp.
+ *
+ * Fast assembler language version of the following C-program for memset
+ * which represents the `standard' for the C-library.
+ *
+ *	void *
+ *	memset(void *sp1, int c, size_t n)
+ *	{
+ *	    if (n != 0) {
+ *		char *sp = sp1;
+ *		do {
+ *		    *sp++ = (char)c;
+ *		} while (--n != 0);
+ *	    }
+ *	    return (sp1);
+ *	}
+ *
+ * The algorithm is as follows :
+ *
+ *	For small 6 or fewer bytes stores, bytes will be stored.
+ *
+ *	For less than 32 bytes stores, align the address on 4 byte boundary.
+ *	Then store as many 4-byte chunks, followed by trailing bytes.
+ *
+ *	For sizes greater than 32 bytes, align the address on 8 byte boundary.
+ *	if (count >= 64) {
+ *      	store 8-bytes chunks to align the address on 64 byte boundary
+ *		if (value to be set is zero && count >= MIN_ZERO) {
+ *              	Using BIS stores, set the first long word of each
+ *			64-byte cache line to zero which will also clear the
+ *			other seven long words of the cache line.
+ *       	}
+ *       	else if (count >= MIN_LOOP) {
+ *       		Using BIS stores, set the first long word of each of
+ *              	ST_CHUNK cache lines (64 bytes each) before the main
+ *			loop is entered.
+ *              	In the main loop, continue pre-setting the first long
+ *              	word of each cache line ST_CHUNK lines in advance while
+ *              	setting the other seven long words (56 bytes) of each
+ * 			cache line until fewer than ST_CHUNK*64 bytes remain.
+ *			Then set the remaining seven long words of each cache
+ * 			line that has already had its first long word set.
+ *       	}
+ *       	store remaining data in 64-byte chunks until less than
+ *       	64 bytes remain.
+ *       }
+ *       Store as many 8-byte chunks, followed by trailing bytes.
+ *
+ * BIS = Block Init Store
+ *   Doing the advance store of the first element of the cache line
+ *   initiates the displacement of a cache line while only using a single
+ *   instruction in the pipeline. That avoids various pipeline delays,
+ *   such as filling the miss buffer. The performance effect is
+ *   similar to prefetching for normal stores.
+ *   The special case for zero fills runs faster and uses fewer instruction
+ *   cycles than the normal memset loop.
+ *
+ * We only use BIS for memset of greater than MIN_LOOP bytes because a sequence
+ * BIS stores must be followed by a membar #StoreStore. The benefit of
+ * the BIS store must be balanced against the cost of the membar operation.
+ */
+
+/*
+ * ASI_STBI_P marks the cache line as "least recently used"
+ * which means if many threads are active, it has a high chance
+ * of being pushed out of the cache between the first initializing
+ * store and the final stores.
+ * Thus, we use ASI_STBIMRU_P which marks the cache line as
+ * "most recently used" for all but the last store to the cache line.
+ */
+
+#include <asm/asi.h>
+#include <asm/page.h>
+
+#define ASI_STBI_P      ASI_BLK_INIT_QUAD_LDD_P
+#define ASI_STBIMRU_P   ASI_ST_BLKINIT_MRU_P
+
+
+#define ST_CHUNK        24   /* multiple of 4 due to loop unrolling */
+#define MIN_LOOP        16320
+#define MIN_ZERO        512
+
+	.section	".text"
+	.align		32
+
+/*
+ * Define clear_page(dest) as memset(dest, 0, PAGE_SIZE)
+ * (can create a more optimized version later.)
+ */
+	.globl		M7clear_page
+	.globl		M7clear_user_page
+M7clear_page:		/* clear_page(dest) */
+M7clear_user_page:
+	set	PAGE_SIZE, %o1
+	/* fall through into bzero code */
+
+	.size		M7clear_page,.-M7clear_page
+	.size		M7clear_user_page,.-M7clear_user_page
+
+/*
+ * Define bzero(dest, n) as memset(dest, 0, n)
+ * (can create a more optimized version later.)
+ */
+	.globl		M7bzero
+M7bzero:		/* bzero(dest, size) */
+	mov	%o1, %o2
+	mov	0, %o1
+	/* fall through into memset code */
+
+	.size		M7bzero,.-M7bzero
+
+	.global		M7memset
+	.type		M7memset, #function
+	.register	%g3, #scratch
+M7memset:
+	mov     %o0, %o5                ! copy sp1 before using it
+	cmp     %o2, 7                  ! if small counts, just write bytes
+	bleu,pn %xcc, .wrchar
+	 and     %o1, 0xff, %o1          ! o1 is (char)c
+
+	sll     %o1, 8, %o3
+	or      %o1, %o3, %o1           ! now o1 has 2 bytes of c
+	sll     %o1, 16, %o3
+	cmp     %o2, 32
+	blu,pn  %xcc, .wdalign
+	 or      %o1, %o3, %o1           ! now o1 has 4 bytes of c
+
+	sllx    %o1, 32, %o3
+	or      %o1, %o3, %o1           ! now o1 has 8 bytes of c
+
+.dbalign:
+	andcc   %o5, 7, %o3             ! is sp1 aligned on a 8 byte bound?
+	bz,pt   %xcc, .blkalign         ! already long word aligned
+	 sub     %o3, 8, %o3             ! -(bytes till long word aligned)
+
+	add     %o2, %o3, %o2           ! update o2 with new count
+	! Set -(%o3) bytes till sp1 long word aligned
+1:	stb     %o1, [%o5]              ! there is at least 1 byte to set
+	inccc   %o3                     ! byte clearing loop
+	bl,pt   %xcc, 1b
+	 inc     %o5
+
+	! Now sp1 is long word aligned (sp1 is found in %o5)
+.blkalign:
+	cmp     %o2, 64                 ! check if there are 64 bytes to set
+	blu,pn  %xcc, .wrshort
+	 mov     %o2, %o3
+
+	andcc   %o5, 63, %o3            ! is sp1 block aligned?
+	bz,pt   %xcc, .blkwr            ! now block aligned
+	 sub     %o3, 64, %o3            ! o3 is -(bytes till block aligned)
+	add     %o2, %o3, %o2           ! o2 is the remainder
+
+	! Store -(%o3) bytes till dst is block (64 byte) aligned.
+	! Use long word stores.
+	! Recall that dst is already long word aligned
+1:
+	addcc   %o3, 8, %o3
+	stx     %o1, [%o5]
+	bl,pt   %xcc, 1b
+	 add     %o5, 8, %o5
+
+	! Now sp1 is block aligned
+.blkwr:
+	andn    %o2, 63, %o4            ! calculate size of blocks in bytes
+	brz,pn  %o1, .wrzero            ! special case if c == 0
+	 and     %o2, 63, %o3            ! %o3 = bytes left after blk stores.
+
+	set     MIN_LOOP, %g1
+	cmp     %o4, %g1                ! check there are enough bytes to set
+	blu,pn  %xcc, .short_set        ! to justify cost of membar
+	                                ! must be > pre-cleared lines
+	 nop
+
+	! initial cache-clearing stores
+	! get store pipeline moving
+	rd	%asi, %g3		! save %asi to be restored later
+	wr     %g0, ASI_STBIMRU_P, %asi
+
+	! Primary memset loop for large memsets
+.wr_loop:
+	sub     %o5, 8, %o5		! adjust %o5 for ASI store alignment
+	mov     ST_CHUNK, %g1
+.wr_loop_start:
+	stxa    %o1, [%o5+8]%asi
+	subcc   %g1, 4, %g1
+	stxa    %o1, [%o5+8+64]%asi
+	add     %o5, 256, %o5
+	stxa    %o1, [%o5+8-128]%asi
+	bgu     %xcc, .wr_loop_start
+	 stxa    %o1, [%o5+8-64]%asi
+
+	sub     %o5, ST_CHUNK*64, %o5	! reset %o5
+	mov     ST_CHUNK, %g1
+
+.wr_loop_rest:
+	stxa    %o1, [%o5+8+8]%asi
+	sub     %o4, 64, %o4
+	stxa    %o1, [%o5+16+8]%asi
+	subcc   %g1, 1, %g1
+	stxa    %o1, [%o5+24+8]%asi
+	stxa    %o1, [%o5+32+8]%asi
+	stxa    %o1, [%o5+40+8]%asi
+	add     %o5, 64, %o5
+	stxa    %o1, [%o5-8]%asi
+	bgu     %xcc, .wr_loop_rest
+	 stxa    %o1, [%o5]ASI_STBI_P
+
+	! If more than ST_CHUNK*64 bytes remain to set, continue
+	! setting the first long word of each cache line in advance
+	! to keep the store pipeline moving.
+
+	cmp     %o4, ST_CHUNK*64
+	bge,pt  %xcc, .wr_loop_start
+	 mov     ST_CHUNK, %g1
+
+	brz,a,pn %o4, .asi_done
+	 add     %o5, 8, %o5             ! restore %o5 offset
+
+.wr_loop_small:
+	stxa    %o1, [%o5+8]%asi
+	stxa    %o1, [%o5+8+8]%asi
+	stxa    %o1, [%o5+16+8]%asi
+	stxa    %o1, [%o5+24+8]%asi
+	stxa    %o1, [%o5+32+8]%asi
+	subcc   %o4, 64, %o4
+	stxa    %o1, [%o5+40+8]%asi
+	add     %o5, 64, %o5
+	stxa    %o1, [%o5-8]%asi
+	bgu,pt  %xcc, .wr_loop_small
+	 stxa    %o1, [%o5]ASI_STBI_P
+
+	ba      .asi_done
+	 add     %o5, 8, %o5             ! restore %o5 offset
+
+	! Special case loop for zero fill memsets
+	! For each 64 byte cache line, single STBI to first element
+	! clears line
+.wrzero:
+	cmp     %o4, MIN_ZERO           ! check if enough bytes to set
+					! to pay %asi + membar cost
+	blu     %xcc, .short_set
+	 nop
+	sub     %o4, 256, %o4
+
+.wrzero_loop:
+	mov     64, %g3
+	stxa    %o1, [%o5]ASI_STBI_P
+	subcc   %o4, 256, %o4
+	stxa    %o1, [%o5+%g3]ASI_STBI_P
+	add     %o5, 256, %o5
+	sub     %g3, 192, %g3
+	stxa    %o1, [%o5+%g3]ASI_STBI_P
+	add %g3, 64, %g3
+	bge,pt  %xcc, .wrzero_loop
+	 stxa    %o1, [%o5+%g3]ASI_STBI_P
+	add     %o4, 256, %o4
+
+	brz,pn  %o4, .bsi_done
+	 nop
+
+.wrzero_small:
+	stxa    %o1, [%o5]ASI_STBI_P
+	subcc   %o4, 64, %o4
+	bgu,pt  %xcc, .wrzero_small
+	 add     %o5, 64, %o5
+	ba,a	.bsi_done
+
+.asi_done:
+	wr	%g3, 0x0, %asi		! restored saved %asi
+.bsi_done:
+	membar  #StoreStore             ! required by use of Block Store Init
+
+.short_set:
+	cmp     %o4, 64                 ! check if 64 bytes to set
+	blu     %xcc, 5f
+	 nop
+4:                                      ! set final blocks of 64 bytes
+	stx     %o1, [%o5]
+	stx     %o1, [%o5+8]
+	stx     %o1, [%o5+16]
+	stx     %o1, [%o5+24]
+	subcc   %o4, 64, %o4
+	stx     %o1, [%o5+32]
+	stx     %o1, [%o5+40]
+	add     %o5, 64, %o5
+	stx     %o1, [%o5-16]
+	bgu,pt  %xcc, 4b
+	 stx     %o1, [%o5-8]
+
+5:
+	! Set the remaining long words
+.wrshort:
+	subcc   %o3, 8, %o3             ! Can we store any long words?
+	blu,pn  %xcc, .wrchars
+	 and     %o2, 7, %o2             ! calc bytes left after long words
+6:
+	subcc   %o3, 8, %o3
+	stx     %o1, [%o5]              ! store the long words
+	bgeu,pt %xcc, 6b
+	 add     %o5, 8, %o5
+
+.wrchars:                               ! check for extra chars
+	brnz    %o2, .wrfin
+	 nop
+	retl
+	 nop
+
+.wdalign:
+	andcc   %o5, 3, %o3             ! is sp1 aligned on a word boundary
+	bz,pn   %xcc, .wrword
+	 andn    %o2, 3, %o3             ! create word sized count in %o3
+
+	dec     %o2                     ! decrement count
+	stb     %o1, [%o5]              ! clear a byte
+	b       .wdalign
+	 inc     %o5                     ! next byte
+
+.wrword:
+	subcc   %o3, 4, %o3
+	st      %o1, [%o5]              ! 4-byte writing loop
+	bnz,pt  %xcc, .wrword
+	 add     %o5, 4, %o5
+
+	and     %o2, 3, %o2             ! leftover count, if any
+
+.wrchar:
+	! Set the remaining bytes, if any
+	brz     %o2, .exit
+	 nop
+.wrfin:
+	deccc   %o2
+	stb     %o1, [%o5]
+	bgu,pt  %xcc, .wrfin
+	 inc     %o5
+.exit:
+	retl                            ! %o0 was preserved
+	 nop
+
+	.size		M7memset,.-M7memset
diff --git a/arch/sparc/lib/M7patch.S b/arch/sparc/lib/M7patch.S
new file mode 100644
index 000000000..9000b7bc5
--- /dev/null
+++ b/arch/sparc/lib/M7patch.S
@@ -0,0 +1,51 @@
+/*
+ * M7patch.S: Patch generic routines with M7 variant.
+ *
+ * Copyright (c) 2016, Oracle and/or its affiliates.  All rights reserved.
+ */
+
+#include <linux/linkage.h>
+
+#define BRANCH_ALWAYS	0x10680000
+#define NOP		0x01000000
+#define NG_DO_PATCH(OLD, NEW)	\
+	sethi	%hi(NEW), %g1; \
+	or	%g1, %lo(NEW), %g1; \
+	sethi	%hi(OLD), %g2; \
+	or	%g2, %lo(OLD), %g2; \
+	sub	%g1, %g2, %g1; \
+	sethi	%hi(BRANCH_ALWAYS), %g3; \
+	sll	%g1, 11, %g1; \
+	srl	%g1, 11 + 2, %g1; \
+	or	%g3, %lo(BRANCH_ALWAYS), %g3; \
+	or	%g3, %g1, %g3; \
+	stw	%g3, [%g2]; \
+	sethi	%hi(NOP), %g3; \
+	or	%g3, %lo(NOP), %g3; \
+	stw	%g3, [%g2 + 0x4]; \
+	flush	%g2;
+
+ENTRY(m7_patch_copyops)
+	NG_DO_PATCH(memcpy, M7memcpy)
+	NG_DO_PATCH(raw_copy_from_user, M7copy_from_user)
+	NG_DO_PATCH(raw_copy_to_user, M7copy_to_user)
+	retl
+	 nop
+ENDPROC(m7_patch_copyops)
+
+ENTRY(m7_patch_bzero)
+	NG_DO_PATCH(memset, M7memset)
+	NG_DO_PATCH(__bzero, M7bzero)
+	NG_DO_PATCH(__clear_user, NGclear_user)
+	NG_DO_PATCH(tsb_init, NGtsb_init)
+	retl
+	 nop
+ENDPROC(m7_patch_bzero)
+
+ENTRY(m7_patch_pageops)
+	NG_DO_PATCH(copy_user_page, NG4copy_user_page)
+	NG_DO_PATCH(_clear_page, M7clear_page)
+	NG_DO_PATCH(clear_user_page, M7clear_user_page)
+	retl
+	 nop
+ENDPROC(m7_patch_pageops)
diff --git a/arch/sparc/lib/Makefile b/arch/sparc/lib/Makefile
new file mode 100644
index 000000000..063556fe2
--- /dev/null
+++ b/arch/sparc/lib/Makefile
@@ -0,0 +1,56 @@
+# SPDX-License-Identifier: GPL-2.0
+# Makefile for Sparc library files..
+#
+
+asflags-y := -ansi -DST_DIV0=0x02
+ccflags-y := -Werror
+
+lib-$(CONFIG_SPARC32) += ashrdi3.o
+lib-$(CONFIG_SPARC32) += memcpy.o memset.o
+lib-y                 += strlen.o
+lib-y                 += checksum_$(BITS).o
+lib-$(CONFIG_SPARC32) += blockops.o
+lib-y                 += memscan_$(BITS).o memcmp.o strncmp_$(BITS).o
+lib-$(CONFIG_SPARC32) += divdi3.o udivdi3.o
+lib-$(CONFIG_SPARC32) += copy_user.o locks.o
+lib-$(CONFIG_SPARC64) += atomic_64.o
+lib-$(CONFIG_SPARC32) += lshrdi3.o ashldi3.o
+lib-$(CONFIG_SPARC32) += muldi3.o bitext.o cmpdi2.o
+lib-$(CONFIG_SPARC64) += multi3.o
+lib-$(CONFIG_SPARC64) += fls.o
+lib-$(CONFIG_SPARC64) += fls64.o
+lib-$(CONFIG_SPARC64) += NG4fls.o
+
+lib-$(CONFIG_SPARC64) += copy_page.o clear_page.o bzero.o
+lib-$(CONFIG_SPARC64) += csum_copy.o csum_copy_from_user.o csum_copy_to_user.o
+lib-$(CONFIG_SPARC64) += VISsave.o
+lib-$(CONFIG_SPARC64) += bitops.o
+
+lib-$(CONFIG_SPARC64) += U1memcpy.o U1copy_from_user.o U1copy_to_user.o
+
+lib-$(CONFIG_SPARC64) += U3memcpy.o U3copy_from_user.o U3copy_to_user.o
+lib-$(CONFIG_SPARC64) += U3patch.o
+
+lib-$(CONFIG_SPARC64) += NGmemcpy.o NGcopy_from_user.o NGcopy_to_user.o
+lib-$(CONFIG_SPARC64) += NGpatch.o NGpage.o NGbzero.o
+
+lib-$(CONFIG_SPARC64) += NG2memcpy.o NG2copy_from_user.o NG2copy_to_user.o
+lib-$(CONFIG_SPARC64) +=  NG2patch.o
+
+lib-$(CONFIG_SPARC64) += NG4memcpy.o NG4copy_from_user.o NG4copy_to_user.o
+lib-$(CONFIG_SPARC64) +=  NG4patch.o NG4copy_page.o NG4clear_page.o NG4memset.o
+
+lib-$(CONFIG_SPARC64) += Memcpy_utils.o
+
+lib-$(CONFIG_SPARC64) += M7memcpy.o M7copy_from_user.o M7copy_to_user.o
+lib-$(CONFIG_SPARC64) += M7patch.o M7memset.o
+
+lib-$(CONFIG_SPARC64) += GENmemcpy.o GENcopy_from_user.o GENcopy_to_user.o
+lib-$(CONFIG_SPARC64) += GENpatch.o GENpage.o GENbzero.o
+
+lib-$(CONFIG_SPARC64) += copy_in_user.o memmove.o
+lib-$(CONFIG_SPARC64) += mcount.o ipcsum.o xor.o hweight.o ffs.o
+
+obj-$(CONFIG_SPARC64) += iomap.o
+obj-$(CONFIG_SPARC32) += atomic32.o ucmpdi2.o
+obj-$(CONFIG_SPARC64) += PeeCeeI.o
diff --git a/arch/sparc/lib/Memcpy_utils.S b/arch/sparc/lib/Memcpy_utils.S
new file mode 100644
index 000000000..64fbac28b
--- /dev/null
+++ b/arch/sparc/lib/Memcpy_utils.S
@@ -0,0 +1,345 @@
+#ifndef __ASM_MEMCPY_UTILS
+#define __ASM_MEMCPY_UTILS
+
+#include <linux/linkage.h>
+#include <asm/asi.h>
+#include <asm/visasm.h>
+
+ENTRY(__restore_asi_fp)
+	VISExitHalf
+	retl
+	 wr	%g0, ASI_AIUS, %asi
+ENDPROC(__restore_asi_fp)
+
+ENTRY(__restore_asi)
+	retl
+	 wr	%g0, ASI_AIUS, %asi
+ENDPROC(__restore_asi)
+
+ENTRY(memcpy_retl_o2)
+	ba,pt	%xcc, __restore_asi
+	 mov	%o2, %o0
+ENDPROC(memcpy_retl_o2)
+ENTRY(memcpy_retl_o2_plus_1)
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, 1, %o0
+ENDPROC(memcpy_retl_o2_plus_1)
+ENTRY(memcpy_retl_o2_plus_3)
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, 3, %o0
+ENDPROC(memcpy_retl_o2_plus_3)
+ENTRY(memcpy_retl_o2_plus_4)
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, 4, %o0
+ENDPROC(memcpy_retl_o2_plus_4)
+ENTRY(memcpy_retl_o2_plus_5)
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, 5, %o0
+ENDPROC(memcpy_retl_o2_plus_5)
+ENTRY(memcpy_retl_o2_plus_6)
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, 6, %o0
+ENDPROC(memcpy_retl_o2_plus_6)
+ENTRY(memcpy_retl_o2_plus_7)
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, 7, %o0
+ENDPROC(memcpy_retl_o2_plus_7)
+ENTRY(memcpy_retl_o2_plus_8)
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, 8, %o0
+ENDPROC(memcpy_retl_o2_plus_8)
+ENTRY(memcpy_retl_o2_plus_15)
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, 15, %o0
+ENDPROC(memcpy_retl_o2_plus_15)
+ENTRY(memcpy_retl_o2_plus_15_8)
+	 add	%o2, 15, %o2
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, 8, %o0
+ENDPROC(memcpy_retl_o2_plus_15_8)
+ENTRY(memcpy_retl_o2_plus_16)
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, 16, %o0
+ENDPROC(memcpy_retl_o2_plus_16)
+ENTRY(memcpy_retl_o2_plus_24)
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, 24, %o0
+ENDPROC(memcpy_retl_o2_plus_24)
+ENTRY(memcpy_retl_o2_plus_31)
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, 31, %o0
+ENDPROC(memcpy_retl_o2_plus_31)
+ENTRY(memcpy_retl_o2_plus_32)
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, 32, %o0
+ENDPROC(memcpy_retl_o2_plus_32)
+ENTRY(memcpy_retl_o2_plus_31_32)
+	add	%o2, 31, %o2
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, 32, %o0
+ENDPROC(memcpy_retl_o2_plus_31_32)
+ENTRY(memcpy_retl_o2_plus_31_24)
+	add	%o2, 31, %o2
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, 24, %o0
+ENDPROC(memcpy_retl_o2_plus_31_24)
+ENTRY(memcpy_retl_o2_plus_31_16)
+	add	%o2, 31, %o2
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, 16, %o0
+ENDPROC(memcpy_retl_o2_plus_31_16)
+ENTRY(memcpy_retl_o2_plus_31_8)
+	add	%o2, 31, %o2
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, 8, %o0
+ENDPROC(memcpy_retl_o2_plus_31_8)
+ENTRY(memcpy_retl_o2_plus_63)
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, 63, %o0
+ENDPROC(memcpy_retl_o2_plus_63)
+ENTRY(memcpy_retl_o2_plus_63_64)
+	 add	%o2, 63, %o2
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, 64, %o0
+ENDPROC(memcpy_retl_o2_plus_63_64)
+ENTRY(memcpy_retl_o2_plus_63_56)
+	 add	%o2, 63, %o2
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, 56, %o0
+ENDPROC(memcpy_retl_o2_plus_63_56)
+ENTRY(memcpy_retl_o2_plus_63_48)
+	 add	%o2, 63, %o2
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, 48, %o0
+ENDPROC(memcpy_retl_o2_plus_63_48)
+ENTRY(memcpy_retl_o2_plus_63_40)
+	 add	%o2, 63, %o2
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, 40, %o0
+ENDPROC(memcpy_retl_o2_plus_63_40)
+ENTRY(memcpy_retl_o2_plus_63_32)
+	 add	%o2, 63, %o2
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, 32, %o0
+ENDPROC(memcpy_retl_o2_plus_63_32)
+ENTRY(memcpy_retl_o2_plus_63_24)
+	 add	%o2, 63, %o2
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, 24, %o0
+ENDPROC(memcpy_retl_o2_plus_63_24)
+ENTRY(memcpy_retl_o2_plus_63_16)
+	 add	%o2, 63, %o2
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, 16, %o0
+ENDPROC(memcpy_retl_o2_plus_63_16)
+ENTRY(memcpy_retl_o2_plus_63_8)
+	 add	%o2, 63, %o2
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, 8, %o0
+ENDPROC(memcpy_retl_o2_plus_63_8)
+ENTRY(memcpy_retl_o2_plus_o5)
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5)
+ENTRY(memcpy_retl_o2_plus_o5_plus_1)
+	add	%o5, 1, %o5
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_plus_1)
+ENTRY(memcpy_retl_o2_plus_o5_plus_4)
+	add	%o5, 4, %o5
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_plus_4)
+ENTRY(memcpy_retl_o2_plus_o5_plus_8)
+	add	%o5, 8, %o5
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_plus_8)
+ENTRY(memcpy_retl_o2_plus_o5_plus_16)
+	add	%o5, 16, %o5
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_plus_16)
+ENTRY(memcpy_retl_o2_plus_o5_plus_24)
+	add	%o5, 24, %o5
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_plus_24)
+ENTRY(memcpy_retl_o2_plus_o5_plus_32)
+	add	%o5, 32, %o5
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_plus_32)
+ENTRY(memcpy_retl_o2_plus_o5_64)
+	add	%o5, 32, %o5
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_64)
+ENTRY(memcpy_retl_o2_plus_g1)
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, %g1, %o0
+ENDPROC(memcpy_retl_o2_plus_g1)
+ENTRY(memcpy_retl_o2_plus_g1_plus_1)
+	add	%g1, 1, %g1
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, %g1, %o0
+ENDPROC(memcpy_retl_o2_plus_g1_plus_1)
+ENTRY(memcpy_retl_o2_plus_g1_plus_8)
+	add	%g1, 8, %g1
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, %g1, %o0
+ENDPROC(memcpy_retl_o2_plus_g1_plus_8)
+ENTRY(memcpy_retl_o2_plus_o4)
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4)
+ENTRY(memcpy_retl_o2_plus_o4_plus_8)
+	add	%o4, 8, %o4
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_plus_8)
+ENTRY(memcpy_retl_o2_plus_o4_plus_16)
+	add	%o4, 16, %o4
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_plus_16)
+ENTRY(memcpy_retl_o2_plus_o4_plus_24)
+	add	%o4, 24, %o4
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_plus_24)
+ENTRY(memcpy_retl_o2_plus_o4_plus_32)
+	add	%o4, 32, %o4
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_plus_32)
+ENTRY(memcpy_retl_o2_plus_o4_plus_40)
+	add	%o4, 40, %o4
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_plus_40)
+ENTRY(memcpy_retl_o2_plus_o4_plus_48)
+	add	%o4, 48, %o4
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_plus_48)
+ENTRY(memcpy_retl_o2_plus_o4_plus_56)
+	add	%o4, 56, %o4
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_plus_56)
+ENTRY(memcpy_retl_o2_plus_o4_plus_64)
+	add	%o4, 64, %o4
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_plus_64)
+ENTRY(memcpy_retl_o2_plus_o5_plus_64)
+	add	%o5, 64, %o5
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_plus_64)
+ENTRY(memcpy_retl_o2_plus_o3_fp)
+	ba,pt	%xcc, __restore_asi_fp
+	 add	%o2, %o3, %o0
+ENDPROC(memcpy_retl_o2_plus_o3_fp)
+ENTRY(memcpy_retl_o2_plus_o3_plus_1_fp)
+	add	%o3, 1, %o3
+	ba,pt	%xcc, __restore_asi_fp
+	 add	%o2, %o3, %o0
+ENDPROC(memcpy_retl_o2_plus_o3_plus_1_fp)
+ENTRY(memcpy_retl_o2_plus_o3_plus_4_fp)
+	add	%o3, 4, %o3
+	ba,pt	%xcc, __restore_asi_fp
+	 add	%o2, %o3, %o0
+ENDPROC(memcpy_retl_o2_plus_o3_plus_4_fp)
+ENTRY(memcpy_retl_o2_plus_o4_fp)
+	ba,pt	%xcc, __restore_asi_fp
+	 add	%o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_fp)
+ENTRY(memcpy_retl_o2_plus_o4_plus_8_fp)
+	add	%o4, 8, %o4
+	ba,pt	%xcc, __restore_asi_fp
+	 add	%o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_plus_8_fp)
+ENTRY(memcpy_retl_o2_plus_o4_plus_16_fp)
+	add	%o4, 16, %o4
+	ba,pt	%xcc, __restore_asi_fp
+	 add	%o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_plus_16_fp)
+ENTRY(memcpy_retl_o2_plus_o4_plus_24_fp)
+	add	%o4, 24, %o4
+	ba,pt	%xcc, __restore_asi_fp
+	 add	%o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_plus_24_fp)
+ENTRY(memcpy_retl_o2_plus_o4_plus_32_fp)
+	add	%o4, 32, %o4
+	ba,pt	%xcc, __restore_asi_fp
+	 add	%o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_plus_32_fp)
+ENTRY(memcpy_retl_o2_plus_o4_plus_40_fp)
+	add	%o4, 40, %o4
+	ba,pt	%xcc, __restore_asi_fp
+	 add	%o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_plus_40_fp)
+ENTRY(memcpy_retl_o2_plus_o4_plus_48_fp)
+	add	%o4, 48, %o4
+	ba,pt	%xcc, __restore_asi_fp
+	 add	%o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_plus_48_fp)
+ENTRY(memcpy_retl_o2_plus_o4_plus_56_fp)
+	add	%o4, 56, %o4
+	ba,pt	%xcc, __restore_asi_fp
+	 add	%o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_plus_56_fp)
+ENTRY(memcpy_retl_o2_plus_o4_plus_64_fp)
+	add	%o4, 64, %o4
+	ba,pt	%xcc, __restore_asi_fp
+	 add	%o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_plus_64_fp)
+ENTRY(memcpy_retl_o2_plus_o5_fp)
+	ba,pt	%xcc, __restore_asi_fp
+	 add	%o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_fp)
+ENTRY(memcpy_retl_o2_plus_o5_plus_64_fp)
+	add	%o5, 64, %o5
+	ba,pt	%xcc, __restore_asi_fp
+	 add	%o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_plus_64_fp)
+ENTRY(memcpy_retl_o2_plus_o5_plus_56_fp)
+	add	%o5, 56, %o5
+	ba,pt	%xcc, __restore_asi_fp
+	 add	%o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_plus_56_fp)
+ENTRY(memcpy_retl_o2_plus_o5_plus_48_fp)
+	add	%o5, 48, %o5
+	ba,pt	%xcc, __restore_asi_fp
+	 add	%o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_plus_48_fp)
+ENTRY(memcpy_retl_o2_plus_o5_plus_40_fp)
+	add	%o5, 40, %o5
+	ba,pt	%xcc, __restore_asi_fp
+	 add	%o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_plus_40_fp)
+ENTRY(memcpy_retl_o2_plus_o5_plus_32_fp)
+	add	%o5, 32, %o5
+	ba,pt	%xcc, __restore_asi_fp
+	 add	%o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_plus_32_fp)
+ENTRY(memcpy_retl_o2_plus_o5_plus_24_fp)
+	add	%o5, 24, %o5
+	ba,pt	%xcc, __restore_asi_fp
+	 add	%o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_plus_24_fp)
+ENTRY(memcpy_retl_o2_plus_o5_plus_16_fp)
+	add	%o5, 16, %o5
+	ba,pt	%xcc, __restore_asi_fp
+	 add	%o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_plus_16_fp)
+ENTRY(memcpy_retl_o2_plus_o5_plus_8_fp)
+	add	%o5, 8, %o5
+	ba,pt	%xcc, __restore_asi_fp
+	 add	%o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_plus_8_fp)
+
+#endif
diff --git a/arch/sparc/lib/NG2copy_from_user.S b/arch/sparc/lib/NG2copy_from_user.S
new file mode 100644
index 000000000..e57bc514f
--- /dev/null
+++ b/arch/sparc/lib/NG2copy_from_user.S
@@ -0,0 +1,44 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* NG2copy_from_user.S: Niagara-2 optimized copy from userspace.
+ *
+ * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
+ */
+
+#define EX_LD(x,y)		\
+98:	x;			\
+	.section __ex_table,"a";\
+	.align 4;		\
+	.word 98b, y;		\
+	.text;			\
+	.align 4;
+
+#define EX_LD_FP(x,y)		\
+98:	x;			\
+	.section __ex_table,"a";\
+	.align 4;		\
+	.word 98b, y##_fp;	\
+	.text;			\
+	.align 4;
+
+#ifndef ASI_AIUS
+#define ASI_AIUS	0x11
+#endif
+
+#ifndef ASI_BLK_AIUS_4V
+#define ASI_BLK_AIUS_4V	0x17
+#endif
+
+#define FUNC_NAME		NG2copy_from_user
+#define LOAD(type,addr,dest)	type##a [addr] %asi, dest
+#define LOAD_BLK(addr,dest)	ldda [addr] ASI_BLK_AIUS_4V, dest
+#define EX_RETVAL(x)		0
+
+#ifdef __KERNEL__
+#define PREAMBLE					\
+	rd		%asi, %g1;			\
+	cmp		%g1, ASI_AIUS;			\
+	bne,pn		%icc, raw_copy_in_user;		\
+	 nop
+#endif
+
+#include "NG2memcpy.S"
diff --git a/arch/sparc/lib/NG2copy_to_user.S b/arch/sparc/lib/NG2copy_to_user.S
new file mode 100644
index 000000000..367c0bf01
--- /dev/null
+++ b/arch/sparc/lib/NG2copy_to_user.S
@@ -0,0 +1,53 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* NG2copy_to_user.S: Niagara-2 optimized copy to userspace.
+ *
+ * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
+ */
+
+#define EX_ST(x,y)		\
+98:	x;			\
+	.section __ex_table,"a";\
+	.align 4;		\
+	.word 98b, y;		\
+	.text;			\
+	.align 4;
+
+#define EX_ST_FP(x,y)		\
+98:	x;			\
+	.section __ex_table,"a";\
+	.align 4;		\
+	.word 98b, y##_fp;	\
+	.text;			\
+	.align 4;
+
+#ifndef ASI_AIUS
+#define ASI_AIUS	0x11
+#endif
+
+#ifndef ASI_BLK_AIUS_4V
+#define ASI_BLK_AIUS_4V	0x17
+#endif
+
+#ifndef ASI_BLK_INIT_QUAD_LDD_AIUS
+#define ASI_BLK_INIT_QUAD_LDD_AIUS 0x23
+#endif
+
+#define FUNC_NAME		NG2copy_to_user
+#define STORE(type,src,addr)	type##a src, [addr] ASI_AIUS
+#define STORE_ASI		ASI_BLK_INIT_QUAD_LDD_AIUS
+#define STORE_BLK(src,addr)	stda src, [addr] ASI_BLK_AIUS_4V
+#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 "NG2memcpy.S"
diff --git a/arch/sparc/lib/NG2memcpy.S b/arch/sparc/lib/NG2memcpy.S
new file mode 100644
index 000000000..bcb21b3a8
--- /dev/null
+++ b/arch/sparc/lib/NG2memcpy.S
@@ -0,0 +1,594 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* NG2memcpy.S: Niagara-2 optimized memcpy.
+ *
+ * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
+ */
+
+#ifdef __KERNEL__
+#include <linux/linkage.h>
+#include <asm/visasm.h>
+#include <asm/asi.h>
+#define GLOBAL_SPARE	%g7
+#else
+#define ASI_PNF 0x82
+#define ASI_BLK_P 0xf0
+#define ASI_BLK_INIT_QUAD_LDD_P 0xe2
+#define FPRS_FEF  0x04
+#ifdef MEMCPY_DEBUG
+#define VISEntryHalf rd %fprs, %o5; wr %g0, FPRS_FEF, %fprs; \
+		     clr %g1; clr %g2; clr %g3; clr %g5; subcc %g0, %g0, %g0;
+#define VISExitHalf and %o5, FPRS_FEF, %o5; wr %o5, 0x0, %fprs
+#else
+#define VISEntryHalf rd %fprs, %o5; wr %g0, FPRS_FEF, %fprs
+#define VISExitHalf and %o5, FPRS_FEF, %o5; wr %o5, 0x0, %fprs
+#endif
+#define GLOBAL_SPARE	%g5
+#endif
+
+#ifndef STORE_ASI
+#ifndef SIMULATE_NIAGARA_ON_NON_NIAGARA
+#define STORE_ASI	ASI_BLK_INIT_QUAD_LDD_P
+#else
+#define STORE_ASI	0x80		/* ASI_P */
+#endif
+#endif
+
+#ifndef EX_LD
+#define EX_LD(x,y)	x
+#endif
+#ifndef EX_LD_FP
+#define EX_LD_FP(x,y)	x
+#endif
+
+#ifndef EX_ST
+#define EX_ST(x,y)	x
+#endif
+#ifndef EX_ST_FP
+#define EX_ST_FP(x,y)	x
+#endif
+
+#ifndef LOAD
+#define LOAD(type,addr,dest)	type [addr], dest
+#endif
+
+#ifndef LOAD_BLK
+#define LOAD_BLK(addr,dest)	ldda [addr] ASI_BLK_P, dest
+#endif
+
+#ifndef STORE
+#ifndef MEMCPY_DEBUG
+#define STORE(type,src,addr)	type src, [addr]
+#else
+#define STORE(type,src,addr)	type##a src, [addr] 0x80
+#endif
+#endif
+
+#ifndef STORE_BLK
+#define STORE_BLK(src,addr)	stda src, [addr] ASI_BLK_P
+#endif
+
+#ifndef STORE_INIT
+#define STORE_INIT(src,addr)	stxa src, [addr] STORE_ASI
+#endif
+
+#ifndef FUNC_NAME
+#define FUNC_NAME	NG2memcpy
+#endif
+
+#ifndef PREAMBLE
+#define PREAMBLE
+#endif
+
+#ifndef XCC
+#define XCC xcc
+#endif
+
+#define FREG_FROB(x0, x1, x2, x3, x4, x5, x6, x7, x8) \
+	faligndata	%x0, %x1, %f0; \
+	faligndata	%x1, %x2, %f2; \
+	faligndata	%x2, %x3, %f4; \
+	faligndata	%x3, %x4, %f6; \
+	faligndata	%x4, %x5, %f8; \
+	faligndata	%x5, %x6, %f10; \
+	faligndata	%x6, %x7, %f12; \
+	faligndata	%x7, %x8, %f14;
+
+#define FREG_MOVE_1(x0) \
+	fsrc2		%x0, %f0;
+#define FREG_MOVE_2(x0, x1) \
+	fsrc2		%x0, %f0; \
+	fsrc2		%x1, %f2;
+#define FREG_MOVE_3(x0, x1, x2) \
+	fsrc2		%x0, %f0; \
+	fsrc2		%x1, %f2; \
+	fsrc2		%x2, %f4;
+#define FREG_MOVE_4(x0, x1, x2, x3) \
+	fsrc2		%x0, %f0; \
+	fsrc2		%x1, %f2; \
+	fsrc2		%x2, %f4; \
+	fsrc2		%x3, %f6;
+#define FREG_MOVE_5(x0, x1, x2, x3, x4) \
+	fsrc2		%x0, %f0; \
+	fsrc2		%x1, %f2; \
+	fsrc2		%x2, %f4; \
+	fsrc2		%x3, %f6; \
+	fsrc2		%x4, %f8;
+#define FREG_MOVE_6(x0, x1, x2, x3, x4, x5) \
+	fsrc2		%x0, %f0; \
+	fsrc2		%x1, %f2; \
+	fsrc2		%x2, %f4; \
+	fsrc2		%x3, %f6; \
+	fsrc2		%x4, %f8; \
+	fsrc2		%x5, %f10;
+#define FREG_MOVE_7(x0, x1, x2, x3, x4, x5, x6) \
+	fsrc2		%x0, %f0; \
+	fsrc2		%x1, %f2; \
+	fsrc2		%x2, %f4; \
+	fsrc2		%x3, %f6; \
+	fsrc2		%x4, %f8; \
+	fsrc2		%x5, %f10; \
+	fsrc2		%x6, %f12;
+#define FREG_MOVE_8(x0, x1, x2, x3, x4, x5, x6, x7) \
+	fsrc2		%x0, %f0; \
+	fsrc2		%x1, %f2; \
+	fsrc2		%x2, %f4; \
+	fsrc2		%x3, %f6; \
+	fsrc2		%x4, %f8; \
+	fsrc2		%x5, %f10; \
+	fsrc2		%x6, %f12; \
+	fsrc2		%x7, %f14;
+#define FREG_LOAD_1(base, x0) \
+	EX_LD_FP(LOAD(ldd, base + 0x00, %x0), NG2_retl_o2_plus_g1)
+#define FREG_LOAD_2(base, x0, x1) \
+	EX_LD_FP(LOAD(ldd, base + 0x00, %x0), NG2_retl_o2_plus_g1); \
+	EX_LD_FP(LOAD(ldd, base + 0x08, %x1), NG2_retl_o2_plus_g1);
+#define FREG_LOAD_3(base, x0, x1, x2) \
+	EX_LD_FP(LOAD(ldd, base + 0x00, %x0), NG2_retl_o2_plus_g1); \
+	EX_LD_FP(LOAD(ldd, base + 0x08, %x1), NG2_retl_o2_plus_g1); \
+	EX_LD_FP(LOAD(ldd, base + 0x10, %x2), NG2_retl_o2_plus_g1);
+#define FREG_LOAD_4(base, x0, x1, x2, x3) \
+	EX_LD_FP(LOAD(ldd, base + 0x00, %x0), NG2_retl_o2_plus_g1); \
+	EX_LD_FP(LOAD(ldd, base + 0x08, %x1), NG2_retl_o2_plus_g1); \
+	EX_LD_FP(LOAD(ldd, base + 0x10, %x2), NG2_retl_o2_plus_g1); \
+	EX_LD_FP(LOAD(ldd, base + 0x18, %x3), NG2_retl_o2_plus_g1);
+#define FREG_LOAD_5(base, x0, x1, x2, x3, x4) \
+	EX_LD_FP(LOAD(ldd, base + 0x00, %x0), NG2_retl_o2_plus_g1); \
+	EX_LD_FP(LOAD(ldd, base + 0x08, %x1), NG2_retl_o2_plus_g1); \
+	EX_LD_FP(LOAD(ldd, base + 0x10, %x2), NG2_retl_o2_plus_g1); \
+	EX_LD_FP(LOAD(ldd, base + 0x18, %x3), NG2_retl_o2_plus_g1); \
+	EX_LD_FP(LOAD(ldd, base + 0x20, %x4), NG2_retl_o2_plus_g1);
+#define FREG_LOAD_6(base, x0, x1, x2, x3, x4, x5) \
+	EX_LD_FP(LOAD(ldd, base + 0x00, %x0), NG2_retl_o2_plus_g1); \
+	EX_LD_FP(LOAD(ldd, base + 0x08, %x1), NG2_retl_o2_plus_g1); \
+	EX_LD_FP(LOAD(ldd, base + 0x10, %x2), NG2_retl_o2_plus_g1); \
+	EX_LD_FP(LOAD(ldd, base + 0x18, %x3), NG2_retl_o2_plus_g1); \
+	EX_LD_FP(LOAD(ldd, base + 0x20, %x4), NG2_retl_o2_plus_g1); \
+	EX_LD_FP(LOAD(ldd, base + 0x28, %x5), NG2_retl_o2_plus_g1);
+#define FREG_LOAD_7(base, x0, x1, x2, x3, x4, x5, x6) \
+	EX_LD_FP(LOAD(ldd, base + 0x00, %x0), NG2_retl_o2_plus_g1); \
+	EX_LD_FP(LOAD(ldd, base + 0x08, %x1), NG2_retl_o2_plus_g1); \
+	EX_LD_FP(LOAD(ldd, base + 0x10, %x2), NG2_retl_o2_plus_g1); \
+	EX_LD_FP(LOAD(ldd, base + 0x18, %x3), NG2_retl_o2_plus_g1); \
+	EX_LD_FP(LOAD(ldd, base + 0x20, %x4), NG2_retl_o2_plus_g1); \
+	EX_LD_FP(LOAD(ldd, base + 0x28, %x5), NG2_retl_o2_plus_g1); \
+	EX_LD_FP(LOAD(ldd, base + 0x30, %x6), NG2_retl_o2_plus_g1);
+
+	.register	%g2,#scratch
+	.register	%g3,#scratch
+
+	.text
+#ifndef EX_RETVAL
+#define EX_RETVAL(x)	x
+__restore_fp:
+	VISExitHalf
+__restore_asi:
+	retl
+	 wr	%g0, ASI_AIUS, %asi
+ENTRY(NG2_retl_o2)
+	ba,pt	%xcc, __restore_asi
+	 mov	%o2, %o0
+ENDPROC(NG2_retl_o2)
+ENTRY(NG2_retl_o2_plus_1)
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, 1, %o0
+ENDPROC(NG2_retl_o2_plus_1)
+ENTRY(NG2_retl_o2_plus_4)
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, 4, %o0
+ENDPROC(NG2_retl_o2_plus_4)
+ENTRY(NG2_retl_o2_plus_8)
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, 8, %o0
+ENDPROC(NG2_retl_o2_plus_8)
+ENTRY(NG2_retl_o2_plus_o4_plus_1)
+	add	%o4, 1, %o4
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, %o4, %o0
+ENDPROC(NG2_retl_o2_plus_o4_plus_1)
+ENTRY(NG2_retl_o2_plus_o4_plus_8)
+	add	%o4, 8, %o4
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, %o4, %o0
+ENDPROC(NG2_retl_o2_plus_o4_plus_8)
+ENTRY(NG2_retl_o2_plus_o4_plus_16)
+	add	%o4, 16, %o4
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, %o4, %o0
+ENDPROC(NG2_retl_o2_plus_o4_plus_16)
+ENTRY(NG2_retl_o2_plus_g1_fp)
+	ba,pt	%xcc, __restore_fp
+	 add	%o2, %g1, %o0
+ENDPROC(NG2_retl_o2_plus_g1_fp)
+ENTRY(NG2_retl_o2_plus_g1_plus_64_fp)
+	add	%g1, 64, %g1
+	ba,pt	%xcc, __restore_fp
+	 add	%o2, %g1, %o0
+ENDPROC(NG2_retl_o2_plus_g1_plus_64_fp)
+ENTRY(NG2_retl_o2_plus_g1_plus_1)
+	add	%g1, 1, %g1
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, %g1, %o0
+ENDPROC(NG2_retl_o2_plus_g1_plus_1)
+ENTRY(NG2_retl_o2_and_7_plus_o4)
+	and	%o2, 7, %o2
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, %o4, %o0
+ENDPROC(NG2_retl_o2_and_7_plus_o4)
+ENTRY(NG2_retl_o2_and_7_plus_o4_plus_8)
+	and	%o2, 7, %o2
+	add	%o4, 8, %o4
+	ba,pt	%xcc, __restore_asi
+	 add	%o2, %o4, %o0
+ENDPROC(NG2_retl_o2_and_7_plus_o4_plus_8)
+#endif
+
+	.align		64
+
+	.globl	FUNC_NAME
+	.type	FUNC_NAME,#function
+FUNC_NAME:	/* %o0=dst, %o1=src, %o2=len */
+	srlx		%o2, 31, %g2
+	cmp		%g2, 0
+	tne		%xcc, 5
+	PREAMBLE
+	mov		%o0, %o3
+	cmp		%o2, 0
+	be,pn		%XCC, 85f
+	 or		%o0, %o1, GLOBAL_SPARE
+	cmp		%o2, 16
+	blu,a,pn	%XCC, 80f
+	 or		GLOBAL_SPARE, %o2, GLOBAL_SPARE
+
+	/* 2 blocks (128 bytes) is the minimum we can do the block
+	 * copy with.  We need to ensure that we'll iterate at least
+	 * once in the block copy loop.  At worst we'll need to align
+	 * the destination to a 64-byte boundary which can chew up
+	 * to (64 - 1) bytes from the length before we perform the
+	 * block copy loop.
+	 *
+	 * However, the cut-off point, performance wise, is around
+	 * 4 64-byte blocks.
+	 */
+	cmp		%o2, (4 * 64)
+	blu,pt		%XCC, 75f
+	 andcc		GLOBAL_SPARE, 0x7, %g0
+
+	/* %o0:	dst
+	 * %o1:	src
+	 * %o2:	len  (known to be >= 128)
+	 *
+	 * The block copy loops can use %o4, %g2, %g3 as
+	 * temporaries while copying the data.  %o5 must
+	 * be preserved between VISEntryHalf and VISExitHalf
+	 */
+
+	LOAD(prefetch, %o1 + 0x000, #one_read)
+	LOAD(prefetch, %o1 + 0x040, #one_read)
+	LOAD(prefetch, %o1 + 0x080, #one_read)
+
+	/* Align destination on 64-byte boundary.  */
+	andcc		%o0, (64 - 1), %o4
+	be,pt		%XCC, 2f
+	 sub		%o4, 64, %o4
+	sub		%g0, %o4, %o4	! bytes to align dst
+	sub		%o2, %o4, %o2
+1:	subcc		%o4, 1, %o4
+	EX_LD(LOAD(ldub, %o1, %g1), NG2_retl_o2_plus_o4_plus_1)
+	EX_ST(STORE(stb, %g1, %o0), NG2_retl_o2_plus_o4_plus_1)
+	add		%o1, 1, %o1
+	bne,pt		%XCC, 1b
+	add		%o0, 1, %o0
+
+2:
+	/* Clobbers o5/g1/g2/g3/g7/icc/xcc.  We must preserve
+	 * o5 from here until we hit VISExitHalf.
+	 */
+	VISEntryHalf
+
+	membar		#Sync
+	alignaddr	%o1, %g0, %g0
+
+	add		%o1, (64 - 1), %o4
+	andn		%o4, (64 - 1), %o4
+	andn		%o2, (64 - 1), %g1
+	sub		%o2, %g1, %o2
+
+	and		%o1, (64 - 1), %g2
+	add		%o1, %g1, %o1
+	sub		%o0, %o4, %g3
+	brz,pt		%g2, 190f
+	 cmp		%g2, 32
+	blu,a		5f
+	 cmp		%g2, 16
+	cmp		%g2, 48
+	blu,a		4f
+	 cmp		%g2, 40
+	cmp		%g2, 56
+	blu		170f
+	 nop
+	ba,a,pt		%xcc, 180f
+	 nop
+
+4:	/* 32 <= low bits < 48 */
+	blu		150f
+	 nop
+	ba,a,pt		%xcc, 160f
+	 nop
+5:	/* 0 < low bits < 32 */
+	blu,a		6f
+	 cmp		%g2, 8
+	cmp		%g2, 24
+	blu		130f
+	 nop
+	ba,a,pt		%xcc, 140f
+	 nop
+6:	/* 0 < low bits < 16 */
+	bgeu		120f
+	 nop
+	/* fall through for 0 < low bits < 8 */
+110:	sub		%o4, 64, %g2
+	EX_LD_FP(LOAD_BLK(%g2, %f0), NG2_retl_o2_plus_g1)
+1:	EX_ST_FP(STORE_INIT(%g0, %o4 + %g3), NG2_retl_o2_plus_g1)
+	EX_LD_FP(LOAD_BLK(%o4, %f16), NG2_retl_o2_plus_g1)
+	FREG_FROB(f0, f2, f4, f6, f8, f10, f12, f14, f16)
+	EX_ST_FP(STORE_BLK(%f0, %o4 + %g3), NG2_retl_o2_plus_g1)
+	FREG_MOVE_8(f16, f18, f20, f22, f24, f26, f28, f30)
+	subcc		%g1, 64, %g1
+	add		%o4, 64, %o4
+	bne,pt		%xcc, 1b
+	 LOAD(prefetch, %o4 + 64, #one_read)
+	ba,pt		%xcc, 195f
+	 nop
+
+120:	sub		%o4, 56, %g2
+	FREG_LOAD_7(%g2, f0, f2, f4, f6, f8, f10, f12)
+1:	EX_ST_FP(STORE_INIT(%g0, %o4 + %g3), NG2_retl_o2_plus_g1)
+	EX_LD_FP(LOAD_BLK(%o4, %f16), NG2_retl_o2_plus_g1)
+	FREG_FROB(f0, f2, f4, f6, f8, f10, f12, f16, f18)
+	EX_ST_FP(STORE_BLK(%f0, %o4 + %g3), NG2_retl_o2_plus_g1)
+	FREG_MOVE_7(f18, f20, f22, f24, f26, f28, f30)
+	subcc		%g1, 64, %g1
+	add		%o4, 64, %o4
+	bne,pt		%xcc, 1b
+	 LOAD(prefetch, %o4 + 64, #one_read)
+	ba,pt		%xcc, 195f
+	 nop
+
+130:	sub		%o4, 48, %g2
+	FREG_LOAD_6(%g2, f0, f2, f4, f6, f8, f10)
+1:	EX_ST_FP(STORE_INIT(%g0, %o4 + %g3), NG2_retl_o2_plus_g1)
+	EX_LD_FP(LOAD_BLK(%o4, %f16), NG2_retl_o2_plus_g1)
+	FREG_FROB(f0, f2, f4, f6, f8, f10, f16, f18, f20)
+	EX_ST_FP(STORE_BLK(%f0, %o4 + %g3), NG2_retl_o2_plus_g1)
+	FREG_MOVE_6(f20, f22, f24, f26, f28, f30)
+	subcc		%g1, 64, %g1
+	add		%o4, 64, %o4
+	bne,pt		%xcc, 1b
+	 LOAD(prefetch, %o4 + 64, #one_read)
+	ba,pt		%xcc, 195f
+	 nop
+
+140:	sub		%o4, 40, %g2
+	FREG_LOAD_5(%g2, f0, f2, f4, f6, f8)
+1:	EX_ST_FP(STORE_INIT(%g0, %o4 + %g3), NG2_retl_o2_plus_g1)
+	EX_LD_FP(LOAD_BLK(%o4, %f16), NG2_retl_o2_plus_g1)
+	FREG_FROB(f0, f2, f4, f6, f8, f16, f18, f20, f22)
+	EX_ST_FP(STORE_BLK(%f0, %o4 + %g3), NG2_retl_o2_plus_g1)
+	FREG_MOVE_5(f22, f24, f26, f28, f30)
+	subcc		%g1, 64, %g1
+	add		%o4, 64, %o4
+	bne,pt		%xcc, 1b
+	 LOAD(prefetch, %o4 + 64, #one_read)
+	ba,pt		%xcc, 195f
+	 nop
+
+150:	sub		%o4, 32, %g2
+	FREG_LOAD_4(%g2, f0, f2, f4, f6)
+1:	EX_ST_FP(STORE_INIT(%g0, %o4 + %g3), NG2_retl_o2_plus_g1)
+	EX_LD_FP(LOAD_BLK(%o4, %f16), NG2_retl_o2_plus_g1)
+	FREG_FROB(f0, f2, f4, f6, f16, f18, f20, f22, f24)
+	EX_ST_FP(STORE_BLK(%f0, %o4 + %g3), NG2_retl_o2_plus_g1)
+	FREG_MOVE_4(f24, f26, f28, f30)
+	subcc		%g1, 64, %g1
+	add		%o4, 64, %o4
+	bne,pt		%xcc, 1b
+	 LOAD(prefetch, %o4 + 64, #one_read)
+	ba,pt		%xcc, 195f
+	 nop
+
+160:	sub		%o4, 24, %g2
+	FREG_LOAD_3(%g2, f0, f2, f4)
+1:	EX_ST_FP(STORE_INIT(%g0, %o4 + %g3), NG2_retl_o2_plus_g1)
+	EX_LD_FP(LOAD_BLK(%o4, %f16), NG2_retl_o2_plus_g1)
+	FREG_FROB(f0, f2, f4, f16, f18, f20, f22, f24, f26)
+	EX_ST_FP(STORE_BLK(%f0, %o4 + %g3), NG2_retl_o2_plus_g1)
+	FREG_MOVE_3(f26, f28, f30)
+	subcc		%g1, 64, %g1
+	add		%o4, 64, %o4
+	bne,pt		%xcc, 1b
+	 LOAD(prefetch, %o4 + 64, #one_read)
+	ba,pt		%xcc, 195f
+	 nop
+
+170:	sub		%o4, 16, %g2
+	FREG_LOAD_2(%g2, f0, f2)
+1:	EX_ST_FP(STORE_INIT(%g0, %o4 + %g3), NG2_retl_o2_plus_g1)
+	EX_LD_FP(LOAD_BLK(%o4, %f16), NG2_retl_o2_plus_g1)
+	FREG_FROB(f0, f2, f16, f18, f20, f22, f24, f26, f28)
+	EX_ST_FP(STORE_BLK(%f0, %o4 + %g3), NG2_retl_o2_plus_g1)
+	FREG_MOVE_2(f28, f30)
+	subcc		%g1, 64, %g1
+	add		%o4, 64, %o4
+	bne,pt		%xcc, 1b
+	 LOAD(prefetch, %o4 + 64, #one_read)
+	ba,pt		%xcc, 195f
+	 nop
+
+180:	sub		%o4, 8, %g2
+	FREG_LOAD_1(%g2, f0)
+1:	EX_ST_FP(STORE_INIT(%g0, %o4 + %g3), NG2_retl_o2_plus_g1)
+	EX_LD_FP(LOAD_BLK(%o4, %f16), NG2_retl_o2_plus_g1)
+	FREG_FROB(f0, f16, f18, f20, f22, f24, f26, f28, f30)
+	EX_ST_FP(STORE_BLK(%f0, %o4 + %g3), NG2_retl_o2_plus_g1)
+	FREG_MOVE_1(f30)
+	subcc		%g1, 64, %g1
+	add		%o4, 64, %o4
+	bne,pt		%xcc, 1b
+	 LOAD(prefetch, %o4 + 64, #one_read)
+	ba,pt		%xcc, 195f
+	 nop
+
+190:
+1:	EX_ST_FP(STORE_INIT(%g0, %o4 + %g3), NG2_retl_o2_plus_g1)
+	subcc		%g1, 64, %g1
+	EX_LD_FP(LOAD_BLK(%o4, %f0), NG2_retl_o2_plus_g1_plus_64)
+	EX_ST_FP(STORE_BLK(%f0, %o4 + %g3), NG2_retl_o2_plus_g1_plus_64)
+	add		%o4, 64, %o4
+	bne,pt		%xcc, 1b
+	 LOAD(prefetch, %o4 + 64, #one_read)
+
+195:
+	add		%o4, %g3, %o0
+	membar		#Sync
+
+	VISExitHalf
+
+	/* %o2 contains any final bytes still needed to be copied
+	 * over. If anything is left, we copy it one byte at a time.
+	 */
+	brz,pt		%o2, 85f
+	 sub		%o0, %o1, GLOBAL_SPARE
+	ba,a,pt		%XCC, 90f
+	 nop
+
+	.align		64
+75: /* 16 < len <= 64 */
+	bne,pn		%XCC, 75f
+	 sub		%o0, %o1, GLOBAL_SPARE
+
+72:
+	andn		%o2, 0xf, %o4
+	and		%o2, 0xf, %o2
+1:	subcc		%o4, 0x10, %o4
+	EX_LD(LOAD(ldx, %o1, %o5), NG2_retl_o2_plus_o4_plus_16)
+	add		%o1, 0x08, %o1
+	EX_LD(LOAD(ldx, %o1, %g1), NG2_retl_o2_plus_o4_plus_16)
+	sub		%o1, 0x08, %o1
+	EX_ST(STORE(stx, %o5, %o1 + GLOBAL_SPARE), NG2_retl_o2_plus_o4_plus_16)
+	add		%o1, 0x8, %o1
+	EX_ST(STORE(stx, %g1, %o1 + GLOBAL_SPARE), NG2_retl_o2_plus_o4_plus_8)
+	bgu,pt		%XCC, 1b
+	 add		%o1, 0x8, %o1
+73:	andcc		%o2, 0x8, %g0
+	be,pt		%XCC, 1f
+	 nop
+	sub		%o2, 0x8, %o2
+	EX_LD(LOAD(ldx, %o1, %o5), NG2_retl_o2_plus_8)
+	EX_ST(STORE(stx, %o5, %o1 + GLOBAL_SPARE), NG2_retl_o2_plus_8)
+	add		%o1, 0x8, %o1
+1:	andcc		%o2, 0x4, %g0
+	be,pt		%XCC, 1f
+	 nop
+	sub		%o2, 0x4, %o2
+	EX_LD(LOAD(lduw, %o1, %o5), NG2_retl_o2_plus_4)
+	EX_ST(STORE(stw, %o5, %o1 + GLOBAL_SPARE), NG2_retl_o2_plus_4)
+	add		%o1, 0x4, %o1
+1:	cmp		%o2, 0
+	be,pt		%XCC, 85f
+	 nop
+	ba,pt		%xcc, 90f
+	 nop
+
+75:
+	andcc		%o0, 0x7, %g1
+	sub		%g1, 0x8, %g1
+	be,pn		%icc, 2f
+	 sub		%g0, %g1, %g1
+	sub		%o2, %g1, %o2
+
+1:	subcc		%g1, 1, %g1
+	EX_LD(LOAD(ldub, %o1, %o5), NG2_retl_o2_plus_g1_plus_1)
+	EX_ST(STORE(stb, %o5, %o1 + GLOBAL_SPARE), NG2_retl_o2_plus_g1_plus_1)
+	bgu,pt		%icc, 1b
+	 add		%o1, 1, %o1
+
+2:	add		%o1, GLOBAL_SPARE, %o0
+	andcc		%o1, 0x7, %g1
+	bne,pt		%icc, 8f
+	 sll		%g1, 3, %g1
+
+	cmp		%o2, 16
+	bgeu,pt		%icc, 72b
+	 nop
+	ba,a,pt		%xcc, 73b
+
+8:	mov		64, GLOBAL_SPARE
+	andn		%o1, 0x7, %o1
+	EX_LD(LOAD(ldx, %o1, %g2), NG2_retl_o2)
+	sub		GLOBAL_SPARE, %g1, GLOBAL_SPARE
+	andn		%o2, 0x7, %o4
+	sllx		%g2, %g1, %g2
+1:	add		%o1, 0x8, %o1
+	EX_LD(LOAD(ldx, %o1, %g3), NG2_retl_o2_and_7_plus_o4)
+	subcc		%o4, 0x8, %o4
+	srlx		%g3, GLOBAL_SPARE, %o5
+	or		%o5, %g2, %o5
+	EX_ST(STORE(stx, %o5, %o0), NG2_retl_o2_and_7_plus_o4_plus_8)
+	add		%o0, 0x8, %o0
+	bgu,pt		%icc, 1b
+	 sllx		%g3, %g1, %g2
+
+	srl		%g1, 3, %g1
+	andcc		%o2, 0x7, %o2
+	be,pn		%icc, 85f
+	 add		%o1, %g1, %o1
+	ba,pt		%xcc, 90f
+	 sub		%o0, %o1, GLOBAL_SPARE
+
+	.align		64
+80: /* 0 < len <= 16 */
+	andcc		GLOBAL_SPARE, 0x3, %g0
+	bne,pn		%XCC, 90f
+	 sub		%o0, %o1, GLOBAL_SPARE
+
+1:
+	subcc		%o2, 4, %o2
+	EX_LD(LOAD(lduw, %o1, %g1), NG2_retl_o2_plus_4)
+	EX_ST(STORE(stw, %g1, %o1 + GLOBAL_SPARE), NG2_retl_o2_plus_4)
+	bgu,pt		%XCC, 1b
+	 add		%o1, 4, %o1
+
+85:	retl
+	 mov		EX_RETVAL(%o3), %o0
+
+	.align		32
+90:
+	subcc		%o2, 1, %o2
+	EX_LD(LOAD(ldub, %o1, %g1), NG2_retl_o2_plus_1)
+	EX_ST(STORE(stb, %g1, %o1 + GLOBAL_SPARE), NG2_retl_o2_plus_1)
+	bgu,pt		%XCC, 90b
+	 add		%o1, 1, %o1
+	retl
+	 mov		EX_RETVAL(%o3), %o0
+
+	.size		FUNC_NAME, .-FUNC_NAME
diff --git a/arch/sparc/lib/NG2patch.S b/arch/sparc/lib/NG2patch.S
new file mode 100644
index 000000000..72431b244
--- /dev/null
+++ b/arch/sparc/lib/NG2patch.S
@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* NG2patch.S: Patch Ultra-I routines with Niagara-2 variant.
+ *
+ * Copyright (C) 2007 David S. Miller <davem@davemloft.net>
+ */
+
+#define BRANCH_ALWAYS	0x10680000
+#define NOP		0x01000000
+#define NG_DO_PATCH(OLD, NEW)	\
+	sethi	%hi(NEW), %g1; \
+	or	%g1, %lo(NEW), %g1; \
+	sethi	%hi(OLD), %g2; \
+	or	%g2, %lo(OLD), %g2; \
+	sub	%g1, %g2, %g1; \
+	sethi	%hi(BRANCH_ALWAYS), %g3; \
+	sll	%g1, 11, %g1; \
+	srl	%g1, 11 + 2, %g1; \
+	or	%g3, %lo(BRANCH_ALWAYS), %g3; \
+	or	%g3, %g1, %g3; \
+	stw	%g3, [%g2]; \
+	sethi	%hi(NOP), %g3; \
+	or	%g3, %lo(NOP), %g3; \
+	stw	%g3, [%g2 + 0x4]; \
+	flush	%g2;
+
+	.globl	niagara2_patch_copyops
+	.type	niagara2_patch_copyops,#function
+niagara2_patch_copyops:
+	NG_DO_PATCH(memcpy, NG2memcpy)
+	NG_DO_PATCH(raw_copy_from_user, NG2copy_from_user)
+	NG_DO_PATCH(raw_copy_to_user, NG2copy_to_user)
+	retl
+	 nop
+	.size	niagara2_patch_copyops,.-niagara2_patch_copyops
diff --git a/arch/sparc/lib/NG4clear_page.S b/arch/sparc/lib/NG4clear_page.S
new file mode 100644
index 000000000..97e2678d0
--- /dev/null
+++ b/arch/sparc/lib/NG4clear_page.S
@@ -0,0 +1,30 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* NG4copy_page.S: Niagara-4 optimized clear page.
+ *
+ * Copyright (C) 2012 (davem@davemloft.net)
+ */
+
+#include <asm/asi.h>
+#include <asm/page.h>
+
+	.text
+
+	.register	%g3, #scratch
+
+	.align		32
+	.globl		NG4clear_page
+	.globl		NG4clear_user_page
+NG4clear_page:		/* %o0=dest */
+NG4clear_user_page:	/* %o0=dest, %o1=vaddr */
+	set		PAGE_SIZE, %g7
+	mov		0x20, %g3
+1:	stxa		%g0, [%o0 + %g0] ASI_ST_BLKINIT_MRU_P
+	subcc		%g7, 0x40, %g7
+	stxa		%g0, [%o0 + %g3] ASI_ST_BLKINIT_MRU_P
+	bne,pt		%xcc, 1b
+	 add		%o0, 0x40, %o0
+	membar		#StoreLoad|#StoreStore
+	retl
+	 nop
+	.size		NG4clear_page,.-NG4clear_page
+	.size		NG4clear_user_page,.-NG4clear_user_page
\ No newline at end of file
diff --git a/arch/sparc/lib/NG4copy_from_user.S b/arch/sparc/lib/NG4copy_from_user.S
new file mode 100644
index 000000000..0cac15a6d
--- /dev/null
+++ b/arch/sparc/lib/NG4copy_from_user.S
@@ -0,0 +1,39 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* NG4copy_from_user.S: Niagara-4 optimized copy from userspace.
+ *
+ * Copyright (C) 2012 David S. Miller (davem@davemloft.net)
+ */
+
+#define EX_LD(x, y)		\
+98:	x;			\
+	.section __ex_table,"a";\
+	.align 4;		\
+	.word 98b, y;		\
+	.text;			\
+	.align 4;
+
+#define EX_LD_FP(x,y)		\
+98:	x;			\
+	.section __ex_table,"a";\
+	.align 4;		\
+	.word 98b, y##_fp;	\
+	.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, raw_copy_in_user;		\
+	 nop
+#endif
+
+#include "NG4memcpy.S"
diff --git a/arch/sparc/lib/NG4copy_page.S b/arch/sparc/lib/NG4copy_page.S
new file mode 100644
index 000000000..581062f8b
--- /dev/null
+++ b/arch/sparc/lib/NG4copy_page.S
@@ -0,0 +1,58 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* NG4copy_page.S: Niagara-4 optimized copy page.
+ *
+ * Copyright (C) 2012 (davem@davemloft.net)
+ */
+
+#include <asm/asi.h>
+#include <asm/page.h>
+
+	.text
+	.align		32
+
+	.register	%g2, #scratch
+	.register	%g3, #scratch
+
+	.globl		NG4copy_user_page
+NG4copy_user_page:	/* %o0=dest, %o1=src, %o2=vaddr */
+	prefetch	[%o1 + 0x000], #n_reads_strong
+	prefetch	[%o1 + 0x040], #n_reads_strong
+	prefetch	[%o1 + 0x080], #n_reads_strong
+	prefetch	[%o1 + 0x0c0], #n_reads_strong
+	set		PAGE_SIZE, %g7
+	prefetch	[%o1 + 0x100], #n_reads_strong
+	prefetch	[%o1 + 0x140], #n_reads_strong
+	prefetch	[%o1 + 0x180], #n_reads_strong
+	prefetch	[%o1 + 0x1c0], #n_reads_strong
+1:
+	ldx		[%o1 + 0x00], %o2
+	subcc		%g7, 0x40, %g7
+	ldx		[%o1 + 0x08], %o3
+	ldx		[%o1 + 0x10], %o4
+	ldx		[%o1 + 0x18], %o5
+	ldx		[%o1 + 0x20], %g1
+	stxa		%o2, [%o0] ASI_ST_BLKINIT_MRU_P
+	add		%o0, 0x08, %o0
+	ldx		[%o1 + 0x28], %g2
+	stxa		%o3, [%o0] ASI_ST_BLKINIT_MRU_P
+	add		%o0, 0x08, %o0
+	ldx		[%o1 + 0x30], %g3
+	stxa		%o4, [%o0] ASI_ST_BLKINIT_MRU_P
+	add		%o0, 0x08, %o0
+	ldx		[%o1 + 0x38], %o2
+	add		%o1, 0x40, %o1
+	stxa		%o5, [%o0] ASI_ST_BLKINIT_MRU_P
+	add		%o0, 0x08, %o0
+	stxa		%g1, [%o0] ASI_ST_BLKINIT_MRU_P
+	add		%o0, 0x08, %o0
+	stxa		%g2, [%o0] ASI_ST_BLKINIT_MRU_P
+	add		%o0, 0x08, %o0
+	stxa		%g3, [%o0] ASI_ST_BLKINIT_MRU_P
+	add		%o0, 0x08, %o0
+	stxa		%o2, [%o0] ASI_ST_BLKINIT_MRU_P
+	add		%o0, 0x08, %o0
+	bne,pt		%icc, 1b
+	 prefetch	[%o1 + 0x200], #n_reads_strong
+	retl
+	 membar		#StoreLoad | #StoreStore
+	.size		NG4copy_user_page,.-NG4copy_user_page
diff --git a/arch/sparc/lib/NG4copy_to_user.S b/arch/sparc/lib/NG4copy_to_user.S
new file mode 100644
index 000000000..c5c9abb3c
--- /dev/null
+++ b/arch/sparc/lib/NG4copy_to_user.S
@@ -0,0 +1,48 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* NG4copy_to_user.S: Niagara-4 optimized copy to userspace.
+ *
+ * Copyright (C) 2012 David S. Miller (davem@davemloft.net)
+ */
+
+#define EX_ST(x,y)		\
+98:	x;			\
+	.section __ex_table,"a";\
+	.align 4;		\
+	.word 98b, y;		\
+	.text;			\
+	.align 4;
+
+#define EX_ST_FP(x,y)		\
+98:	x;			\
+	.section __ex_table,"a";\
+	.align 4;		\
+	.word 98b, y##_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		NG4copy_to_user
+#define STORE(type,src,addr)	type##a src, [addr] %asi
+#define STORE_ASI		ASI_BLK_INIT_QUAD_LDD_AIUS
+#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 "NG4memcpy.S"
diff --git a/arch/sparc/lib/NG4fls.S b/arch/sparc/lib/NG4fls.S
new file mode 100644
index 000000000..2d0991e5b
--- /dev/null
+++ b/arch/sparc/lib/NG4fls.S
@@ -0,0 +1,30 @@
+/* NG4fls.S: SPARC optimized fls and __fls for T4 and above.
+ *
+ * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
+ */
+
+#include <linux/linkage.h>
+
+#define LZCNT_O0_G2	\
+	.word	0x85b002e8
+
+	.text
+	.register	%g2, #scratch
+	.register	%g3, #scratch
+
+ENTRY(NG4fls)
+	LZCNT_O0_G2	!lzcnt	%o0, %g2
+	mov	64, %g3
+	retl
+	 sub	%g3, %g2, %o0
+ENDPROC(NG4fls)
+
+ENTRY(__NG4fls)
+	brz,pn	%o0, 1f
+	LZCNT_O0_G2	!lzcnt	%o0, %g2
+	mov	63, %g3
+	sub	%g3, %g2, %o0
+1:
+	retl
+	 nop
+ENDPROC(__NG4fls)
diff --git a/arch/sparc/lib/NG4memcpy.S b/arch/sparc/lib/NG4memcpy.S
new file mode 100644
index 000000000..7ad58ebe0
--- /dev/null
+++ b/arch/sparc/lib/NG4memcpy.S
@@ -0,0 +1,386 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* NG4memcpy.S: Niagara-4 optimized memcpy.
+ *
+ * Copyright (C) 2012 David S. Miller (davem@davemloft.net)
+ */
+
+#ifdef __KERNEL__
+#include <linux/linkage.h>
+#include <asm/visasm.h>
+#include <asm/asi.h>
+#define GLOBAL_SPARE	%g7
+#else
+#define ASI_BLK_INIT_QUAD_LDD_P 0xe2
+#define FPRS_FEF  0x04
+
+/* On T4 it is very expensive to access ASRs like %fprs and
+ * %asi, avoiding a read or a write can save ~50 cycles.
+ */
+#define FPU_ENTER			\
+	rd	%fprs, %o5;		\
+	andcc	%o5, FPRS_FEF, %g0;	\
+	be,a,pn	%icc, 999f;		\
+	 wr	%g0, FPRS_FEF, %fprs;	\
+	999:
+
+#ifdef MEMCPY_DEBUG
+#define VISEntryHalf FPU_ENTER; \
+		     clr %g1; clr %g2; clr %g3; clr %g5; subcc %g0, %g0, %g0;
+#define VISExitHalf and %o5, FPRS_FEF, %o5; wr %o5, 0x0, %fprs
+#else
+#define VISEntryHalf FPU_ENTER
+#define VISExitHalf and %o5, FPRS_FEF, %o5; wr %o5, 0x0, %fprs
+#endif
+
+#define GLOBAL_SPARE	%g5
+#endif
+
+#ifndef STORE_ASI
+#ifndef SIMULATE_NIAGARA_ON_NON_NIAGARA
+#define STORE_ASI	ASI_BLK_INIT_QUAD_LDD_P
+#else
+#define STORE_ASI	0x80		/* ASI_P */
+#endif
+#endif
+
+#if !defined(EX_LD) && !defined(EX_ST)
+#define NON_USER_COPY
+#endif
+
+#ifndef EX_LD
+#define EX_LD(x,y)	x
+#endif
+#ifndef EX_LD_FP
+#define EX_LD_FP(x,y)	x
+#endif
+
+#ifndef EX_ST
+#define EX_ST(x,y)	x
+#endif
+#ifndef EX_ST_FP
+#define EX_ST_FP(x,y)	x
+#endif
+
+
+#ifndef LOAD
+#define LOAD(type,addr,dest)	type [addr], dest
+#endif
+
+#ifndef STORE
+#ifndef MEMCPY_DEBUG
+#define STORE(type,src,addr)	type src, [addr]
+#else
+#define STORE(type,src,addr)	type##a src, [addr] %asi
+#endif
+#endif
+
+#ifndef STORE_INIT
+#define STORE_INIT(src,addr)	stxa src, [addr] STORE_ASI
+#endif
+
+#ifndef FUNC_NAME
+#define FUNC_NAME	NG4memcpy
+#endif
+#ifndef PREAMBLE
+#define PREAMBLE
+#endif
+
+#ifndef XCC
+#define XCC xcc
+#endif
+
+	.register	%g2,#scratch
+	.register	%g3,#scratch
+
+	.text
+#ifndef EX_RETVAL
+#define EX_RETVAL(x)	x
+#endif
+	.align		64
+
+	.globl	FUNC_NAME
+	.type	FUNC_NAME,#function
+FUNC_NAME:	/* %o0=dst, %o1=src, %o2=len */
+#ifdef MEMCPY_DEBUG
+	wr		%g0, 0x80, %asi
+#endif
+	srlx		%o2, 31, %g2
+	cmp		%g2, 0
+	tne		%XCC, 5
+	PREAMBLE
+	mov		%o0, %o3
+	brz,pn		%o2, .Lexit
+	 cmp		%o2, 3
+	ble,pn		%icc, .Ltiny
+	 cmp		%o2, 19
+	ble,pn		%icc, .Lsmall
+	 or		%o0, %o1, %g2
+	cmp		%o2, 128
+	bl,pn		%icc, .Lmedium
+	 nop
+
+.Llarge:/* len >= 0x80 */
+	/* First get dest 8 byte aligned.  */
+	sub		%g0, %o0, %g1
+	and		%g1, 0x7, %g1
+	brz,pt		%g1, 51f
+	 sub		%o2, %g1, %o2
+
+
+1:	EX_LD(LOAD(ldub, %o1 + 0x00, %g2), memcpy_retl_o2_plus_g1)
+	add		%o1, 1, %o1
+	subcc		%g1, 1, %g1
+	add		%o0, 1, %o0
+	bne,pt		%icc, 1b
+	 EX_ST(STORE(stb, %g2, %o0 - 0x01), memcpy_retl_o2_plus_g1_plus_1)
+
+51:	LOAD(prefetch, %o1 + 0x040, #n_reads_strong)
+	LOAD(prefetch, %o1 + 0x080, #n_reads_strong)
+	LOAD(prefetch, %o1 + 0x0c0, #n_reads_strong)
+	LOAD(prefetch, %o1 + 0x100, #n_reads_strong)
+	LOAD(prefetch, %o1 + 0x140, #n_reads_strong)
+	LOAD(prefetch, %o1 + 0x180, #n_reads_strong)
+	LOAD(prefetch, %o1 + 0x1c0, #n_reads_strong)
+	LOAD(prefetch, %o1 + 0x200, #n_reads_strong)
+
+	/* Check if we can use the straight fully aligned
+	 * loop, or we require the alignaddr/faligndata variant.
+	 */
+	andcc		%o1, 0x7, %o5
+	bne,pn		%icc, .Llarge_src_unaligned
+	 sub		%g0, %o0, %g1
+
+	/* Legitimize the use of initializing stores by getting dest
+	 * to be 64-byte aligned.
+	 */
+	and		%g1, 0x3f, %g1
+	brz,pt		%g1, .Llarge_aligned
+	 sub		%o2, %g1, %o2
+
+1:	EX_LD(LOAD(ldx, %o1 + 0x00, %g2), memcpy_retl_o2_plus_g1)
+	add		%o1, 8, %o1
+	subcc		%g1, 8, %g1
+	add		%o0, 8, %o0
+	bne,pt		%icc, 1b
+	 EX_ST(STORE(stx, %g2, %o0 - 0x08), memcpy_retl_o2_plus_g1_plus_8)
+
+.Llarge_aligned:
+	/* len >= 0x80 && src 8-byte aligned && dest 8-byte aligned */
+	andn		%o2, 0x3f, %o4
+	sub		%o2, %o4, %o2
+
+1:	EX_LD(LOAD(ldx, %o1 + 0x00, %g1), memcpy_retl_o2_plus_o4)
+	add		%o1, 0x40, %o1
+	EX_LD(LOAD(ldx, %o1 - 0x38, %g2), memcpy_retl_o2_plus_o4)
+	subcc		%o4, 0x40, %o4
+	EX_LD(LOAD(ldx, %o1 - 0x30, %g3), memcpy_retl_o2_plus_o4_plus_64)
+	EX_LD(LOAD(ldx, %o1 - 0x28, GLOBAL_SPARE), memcpy_retl_o2_plus_o4_plus_64)
+	EX_LD(LOAD(ldx, %o1 - 0x20, %o5), memcpy_retl_o2_plus_o4_plus_64)
+	EX_ST(STORE_INIT(%g1, %o0), memcpy_retl_o2_plus_o4_plus_64)
+	add		%o0, 0x08, %o0
+	EX_ST(STORE_INIT(%g2, %o0), memcpy_retl_o2_plus_o4_plus_56)
+	add		%o0, 0x08, %o0
+	EX_LD(LOAD(ldx, %o1 - 0x18, %g2), memcpy_retl_o2_plus_o4_plus_48)
+	EX_ST(STORE_INIT(%g3, %o0), memcpy_retl_o2_plus_o4_plus_48)
+	add		%o0, 0x08, %o0
+	EX_LD(LOAD(ldx, %o1 - 0x10, %g3), memcpy_retl_o2_plus_o4_plus_40)
+	EX_ST(STORE_INIT(GLOBAL_SPARE, %o0), memcpy_retl_o2_plus_o4_plus_40)
+	add		%o0, 0x08, %o0
+	EX_LD(LOAD(ldx, %o1 - 0x08, GLOBAL_SPARE), memcpy_retl_o2_plus_o4_plus_32)
+	EX_ST(STORE_INIT(%o5, %o0), memcpy_retl_o2_plus_o4_plus_32)
+	add		%o0, 0x08, %o0
+	EX_ST(STORE_INIT(%g2, %o0), memcpy_retl_o2_plus_o4_plus_24)
+	add		%o0, 0x08, %o0
+	EX_ST(STORE_INIT(%g3, %o0), memcpy_retl_o2_plus_o4_plus_16)
+	add		%o0, 0x08, %o0
+	EX_ST(STORE_INIT(GLOBAL_SPARE, %o0), memcpy_retl_o2_plus_o4_plus_8)
+	add		%o0, 0x08, %o0
+	bne,pt		%icc, 1b
+	 LOAD(prefetch, %o1 + 0x200, #n_reads_strong)
+
+	membar		#StoreLoad | #StoreStore
+
+	brz,pn		%o2, .Lexit
+	 cmp		%o2, 19
+	ble,pn		%icc, .Lsmall_unaligned
+	 nop
+	ba,a,pt		%icc, .Lmedium_noprefetch
+
+.Lexit:	retl
+	 mov		EX_RETVAL(%o3), %o0
+
+.Llarge_src_unaligned:
+#ifdef NON_USER_COPY
+	VISEntryHalfFast(.Lmedium_vis_entry_fail)
+#else
+	VISEntryHalf
+#endif
+	andn		%o2, 0x3f, %o4
+	sub		%o2, %o4, %o2
+	alignaddr	%o1, %g0, %g1
+	add		%o1, %o4, %o1
+	EX_LD_FP(LOAD(ldd, %g1 + 0x00, %f0), memcpy_retl_o2_plus_o4)
+1:	EX_LD_FP(LOAD(ldd, %g1 + 0x08, %f2), memcpy_retl_o2_plus_o4)
+	subcc		%o4, 0x40, %o4
+	EX_LD_FP(LOAD(ldd, %g1 + 0x10, %f4), memcpy_retl_o2_plus_o4_plus_64)
+	EX_LD_FP(LOAD(ldd, %g1 + 0x18, %f6), memcpy_retl_o2_plus_o4_plus_64)
+	EX_LD_FP(LOAD(ldd, %g1 + 0x20, %f8), memcpy_retl_o2_plus_o4_plus_64)
+	EX_LD_FP(LOAD(ldd, %g1 + 0x28, %f10), memcpy_retl_o2_plus_o4_plus_64)
+	EX_LD_FP(LOAD(ldd, %g1 + 0x30, %f12), memcpy_retl_o2_plus_o4_plus_64)
+	EX_LD_FP(LOAD(ldd, %g1 + 0x38, %f14), memcpy_retl_o2_plus_o4_plus_64)
+	faligndata	%f0, %f2, %f16
+	EX_LD_FP(LOAD(ldd, %g1 + 0x40, %f0), memcpy_retl_o2_plus_o4_plus_64)
+	faligndata	%f2, %f4, %f18
+	add		%g1, 0x40, %g1
+	faligndata	%f4, %f6, %f20
+	faligndata	%f6, %f8, %f22
+	faligndata	%f8, %f10, %f24
+	faligndata	%f10, %f12, %f26
+	faligndata	%f12, %f14, %f28
+	faligndata	%f14, %f0, %f30
+	EX_ST_FP(STORE(std, %f16, %o0 + 0x00), memcpy_retl_o2_plus_o4_plus_64)
+	EX_ST_FP(STORE(std, %f18, %o0 + 0x08), memcpy_retl_o2_plus_o4_plus_56)
+	EX_ST_FP(STORE(std, %f20, %o0 + 0x10), memcpy_retl_o2_plus_o4_plus_48)
+	EX_ST_FP(STORE(std, %f22, %o0 + 0x18), memcpy_retl_o2_plus_o4_plus_40)
+	EX_ST_FP(STORE(std, %f24, %o0 + 0x20), memcpy_retl_o2_plus_o4_plus_32)
+	EX_ST_FP(STORE(std, %f26, %o0 + 0x28), memcpy_retl_o2_plus_o4_plus_24)
+	EX_ST_FP(STORE(std, %f28, %o0 + 0x30), memcpy_retl_o2_plus_o4_plus_16)
+	EX_ST_FP(STORE(std, %f30, %o0 + 0x38), memcpy_retl_o2_plus_o4_plus_8)
+	add		%o0, 0x40, %o0
+	bne,pt		%icc, 1b
+	 LOAD(prefetch, %g1 + 0x200, #n_reads_strong)
+#ifdef NON_USER_COPY
+	VISExitHalfFast
+#else
+	VISExitHalf
+#endif
+	brz,pn		%o2, .Lexit
+	 cmp		%o2, 19
+	ble,pn		%icc, .Lsmall_unaligned
+	 nop
+	ba,a,pt		%icc, .Lmedium_unaligned
+
+#ifdef NON_USER_COPY
+.Lmedium_vis_entry_fail:
+	 or		%o0, %o1, %g2
+#endif
+.Lmedium:
+	LOAD(prefetch, %o1 + 0x40, #n_reads_strong)
+	andcc		%g2, 0x7, %g0
+	bne,pn		%icc, .Lmedium_unaligned
+	 nop
+.Lmedium_noprefetch:
+	andncc		%o2, 0x20 - 1, %o5
+	be,pn		%icc, 2f
+	 sub		%o2, %o5, %o2
+1:	EX_LD(LOAD(ldx, %o1 + 0x00, %g1), memcpy_retl_o2_plus_o5)
+	EX_LD(LOAD(ldx, %o1 + 0x08, %g2), memcpy_retl_o2_plus_o5)
+	EX_LD(LOAD(ldx, %o1 + 0x10, GLOBAL_SPARE), memcpy_retl_o2_plus_o5)
+	EX_LD(LOAD(ldx, %o1 + 0x18, %o4), memcpy_retl_o2_plus_o5)
+	add		%o1, 0x20, %o1
+	subcc		%o5, 0x20, %o5
+	EX_ST(STORE(stx, %g1, %o0 + 0x00), memcpy_retl_o2_plus_o5_plus_32)
+	EX_ST(STORE(stx, %g2, %o0 + 0x08), memcpy_retl_o2_plus_o5_plus_24)
+	EX_ST(STORE(stx, GLOBAL_SPARE, %o0 + 0x10), memcpy_retl_o2_plus_o5_plus_24)
+	EX_ST(STORE(stx, %o4, %o0 + 0x18), memcpy_retl_o2_plus_o5_plus_8)
+	bne,pt		%icc, 1b
+	 add		%o0, 0x20, %o0
+2:	andcc		%o2, 0x18, %o5
+	be,pt		%icc, 3f
+	 sub		%o2, %o5, %o2
+
+1:	EX_LD(LOAD(ldx, %o1 + 0x00, %g1), memcpy_retl_o2_plus_o5)
+	add		%o1, 0x08, %o1
+	add		%o0, 0x08, %o0
+	subcc		%o5, 0x08, %o5
+	bne,pt		%icc, 1b
+	 EX_ST(STORE(stx, %g1, %o0 - 0x08), memcpy_retl_o2_plus_o5_plus_8)
+3:	brz,pt		%o2, .Lexit
+	 cmp		%o2, 0x04
+	bl,pn		%icc, .Ltiny
+	 nop
+	EX_LD(LOAD(lduw, %o1 + 0x00, %g1), memcpy_retl_o2)
+	add		%o1, 0x04, %o1
+	add		%o0, 0x04, %o0
+	subcc		%o2, 0x04, %o2
+	bne,pn		%icc, .Ltiny
+	 EX_ST(STORE(stw, %g1, %o0 - 0x04), memcpy_retl_o2_plus_4)
+	ba,a,pt		%icc, .Lexit
+.Lmedium_unaligned:
+	/* First get dest 8 byte aligned.  */
+	sub		%g0, %o0, %g1
+	and		%g1, 0x7, %g1
+	brz,pt		%g1, 2f
+	 sub		%o2, %g1, %o2
+
+1:	EX_LD(LOAD(ldub, %o1 + 0x00, %g2), memcpy_retl_o2_plus_g1)
+	add		%o1, 1, %o1
+	subcc		%g1, 1, %g1
+	add		%o0, 1, %o0
+	bne,pt		%icc, 1b
+	 EX_ST(STORE(stb, %g2, %o0 - 0x01), memcpy_retl_o2_plus_g1_plus_1)
+2:
+	and		%o1, 0x7, %g1
+	brz,pn		%g1, .Lmedium_noprefetch
+	 sll		%g1, 3, %g1
+	mov		64, %g2
+	sub		%g2, %g1, %g2
+	andn		%o1, 0x7, %o1
+	EX_LD(LOAD(ldx, %o1 + 0x00, %o4), memcpy_retl_o2)
+	sllx		%o4, %g1, %o4
+	andn		%o2, 0x08 - 1, %o5
+	sub		%o2, %o5, %o2
+1:	EX_LD(LOAD(ldx, %o1 + 0x08, %g3), memcpy_retl_o2_plus_o5)
+	add		%o1, 0x08, %o1
+	subcc		%o5, 0x08, %o5
+	srlx		%g3, %g2, GLOBAL_SPARE
+	or		GLOBAL_SPARE, %o4, GLOBAL_SPARE
+	EX_ST(STORE(stx, GLOBAL_SPARE, %o0 + 0x00), memcpy_retl_o2_plus_o5_plus_8)
+	add		%o0, 0x08, %o0
+	bne,pt		%icc, 1b
+	 sllx		%g3, %g1, %o4
+	srl		%g1, 3, %g1
+	add		%o1, %g1, %o1
+	brz,pn		%o2, .Lexit
+	 nop
+	ba,pt		%icc, .Lsmall_unaligned
+
+.Ltiny:
+	EX_LD(LOAD(ldub, %o1 + 0x00, %g1), memcpy_retl_o2)
+	subcc		%o2, 1, %o2
+	be,pn		%icc, .Lexit
+	 EX_ST(STORE(stb, %g1, %o0 + 0x00), memcpy_retl_o2_plus_1)
+	EX_LD(LOAD(ldub, %o1 + 0x01, %g1), memcpy_retl_o2)
+	subcc		%o2, 1, %o2
+	be,pn		%icc, .Lexit
+	 EX_ST(STORE(stb, %g1, %o0 + 0x01), memcpy_retl_o2_plus_1)
+	EX_LD(LOAD(ldub, %o1 + 0x02, %g1), memcpy_retl_o2)
+	ba,pt		%icc, .Lexit
+	 EX_ST(STORE(stb, %g1, %o0 + 0x02), memcpy_retl_o2)
+
+.Lsmall:
+	andcc		%g2, 0x3, %g0
+	bne,pn		%icc, .Lsmall_unaligned
+	 andn		%o2, 0x4 - 1, %o5
+	sub		%o2, %o5, %o2
+1:
+	EX_LD(LOAD(lduw, %o1 + 0x00, %g1), memcpy_retl_o2_plus_o5)
+	add		%o1, 0x04, %o1
+	subcc		%o5, 0x04, %o5
+	add		%o0, 0x04, %o0
+	bne,pt		%icc, 1b
+	 EX_ST(STORE(stw, %g1, %o0 - 0x04), memcpy_retl_o2_plus_o5_plus_4)
+	brz,pt		%o2, .Lexit
+	 nop
+	ba,a,pt		%icc, .Ltiny
+
+.Lsmall_unaligned:
+1:	EX_LD(LOAD(ldub, %o1 + 0x00, %g1), memcpy_retl_o2)
+	add		%o1, 1, %o1
+	add		%o0, 1, %o0
+	subcc		%o2, 1, %o2
+	bne,pt		%icc, 1b
+	 EX_ST(STORE(stb, %g1, %o0 - 0x01), memcpy_retl_o2_plus_1)
+	ba,a,pt		%icc, .Lexit
+	 nop
+	.size		FUNC_NAME, .-FUNC_NAME
diff --git a/arch/sparc/lib/NG4memset.S b/arch/sparc/lib/NG4memset.S
new file mode 100644
index 000000000..f81ee5419
--- /dev/null
+++ b/arch/sparc/lib/NG4memset.S
@@ -0,0 +1,107 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* NG4memset.S: Niagara-4 optimized memset/bzero.
+ *
+ * Copyright (C) 2012 David S. Miller (davem@davemloft.net)
+ */
+
+#include <asm/asi.h>
+
+	.register	%g2, #scratch
+	.register	%g3, #scratch
+
+	.text
+	.align		32
+	.globl		NG4memset
+NG4memset:
+	andcc		%o1, 0xff, %o4
+	be,pt		%icc, 1f
+	 mov		%o2, %o1
+	sllx		%o4, 8, %g1
+	or		%g1, %o4, %o2
+	sllx		%o2, 16, %g1
+	or		%g1, %o2, %o2
+	sllx		%o2, 32, %g1
+	ba,pt		%icc, 1f
+	 or		%g1, %o2, %o4
+	.size		NG4memset,.-NG4memset
+
+	.align		32
+	.globl		NG4bzero
+NG4bzero:
+	clr		%o4
+1:	cmp		%o1, 16
+	ble		%icc, .Ltiny
+	 mov		%o0, %o3
+	sub		%g0, %o0, %g1
+	and		%g1, 0x7, %g1
+	brz,pt		%g1, .Laligned8
+	 sub		%o1, %g1, %o1
+1:	stb		%o4, [%o0 + 0x00]
+	subcc		%g1, 1, %g1
+	bne,pt		%icc, 1b
+	 add		%o0, 1, %o0
+.Laligned8:
+	cmp		%o1, 64 + (64 - 8)
+	ble		.Lmedium
+	 sub		%g0, %o0, %g1
+	andcc		%g1, (64 - 1), %g1
+	brz,pn		%g1, .Laligned64
+	 sub		%o1, %g1, %o1
+1:	stx		%o4, [%o0 + 0x00]
+	subcc		%g1, 8, %g1
+	bne,pt		%icc, 1b
+	 add		%o0, 0x8, %o0
+.Laligned64:
+	andn		%o1, 64 - 1, %g1
+	sub		%o1, %g1, %o1
+	brnz,pn		%o4, .Lnon_bzero_loop
+	 mov		0x20, %g2
+1:	stxa		%o4, [%o0 + %g0] ASI_BLK_INIT_QUAD_LDD_P
+	subcc		%g1, 0x40, %g1
+	stxa		%o4, [%o0 + %g2] ASI_BLK_INIT_QUAD_LDD_P
+	bne,pt		%icc, 1b
+	 add		%o0, 0x40, %o0
+.Lpostloop:
+	cmp		%o1, 8
+	bl,pn		%icc, .Ltiny
+	 membar		#StoreStore|#StoreLoad
+.Lmedium:
+	andn		%o1, 0x7, %g1
+	sub		%o1, %g1, %o1
+1:	stx		%o4, [%o0 + 0x00]
+	subcc		%g1, 0x8, %g1
+	bne,pt		%icc, 1b
+	 add		%o0, 0x08, %o0
+	andcc		%o1, 0x4, %g1
+	be,pt		%icc, .Ltiny
+	 sub		%o1, %g1, %o1
+	stw		%o4, [%o0 + 0x00]
+	add		%o0, 0x4, %o0
+.Ltiny:
+	cmp		%o1, 0
+	be,pn		%icc, .Lexit
+1:	 subcc		%o1, 1, %o1
+	stb		%o4, [%o0 + 0x00]
+	bne,pt		%icc, 1b
+	 add		%o0, 1, %o0
+.Lexit:
+	retl
+	 mov		%o3, %o0
+.Lnon_bzero_loop:
+	mov		0x08, %g3
+	mov		0x28, %o5
+1:	stxa		%o4, [%o0 + %g0] ASI_BLK_INIT_QUAD_LDD_P
+	subcc		%g1, 0x40, %g1
+	stxa		%o4, [%o0 + %g2] ASI_BLK_INIT_QUAD_LDD_P
+	stxa		%o4, [%o0 + %g3] ASI_BLK_INIT_QUAD_LDD_P
+	stxa		%o4, [%o0 + %o5] ASI_BLK_INIT_QUAD_LDD_P
+	add		%o0, 0x10, %o0
+	stxa		%o4, [%o0 + %g0] ASI_BLK_INIT_QUAD_LDD_P
+	stxa		%o4, [%o0 + %g2] ASI_BLK_INIT_QUAD_LDD_P
+	stxa		%o4, [%o0 + %g3] ASI_BLK_INIT_QUAD_LDD_P
+	stxa		%o4, [%o0 + %o5] ASI_BLK_INIT_QUAD_LDD_P
+	bne,pt		%icc, 1b
+	 add		%o0, 0x30, %o0
+	ba,a,pt		%icc, .Lpostloop
+	 nop
+	.size		NG4bzero,.-NG4bzero
diff --git a/arch/sparc/lib/NG4patch.S b/arch/sparc/lib/NG4patch.S
new file mode 100644
index 000000000..37866175c
--- /dev/null
+++ b/arch/sparc/lib/NG4patch.S
@@ -0,0 +1,64 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* NG4patch.S: Patch Ultra-I routines with Niagara-4 variant.
+ *
+ * Copyright (C) 2012 David S. Miller <davem@davemloft.net>
+ */
+
+#include <linux/linkage.h>
+
+#define BRANCH_ALWAYS	0x10680000
+#define NOP		0x01000000
+#define NG_DO_PATCH(OLD, NEW)	\
+	sethi	%hi(NEW), %g1; \
+	or	%g1, %lo(NEW), %g1; \
+	sethi	%hi(OLD), %g2; \
+	or	%g2, %lo(OLD), %g2; \
+	sub	%g1, %g2, %g1; \
+	sethi	%hi(BRANCH_ALWAYS), %g3; \
+	sll	%g1, 11, %g1; \
+	srl	%g1, 11 + 2, %g1; \
+	or	%g3, %lo(BRANCH_ALWAYS), %g3; \
+	or	%g3, %g1, %g3; \
+	stw	%g3, [%g2]; \
+	sethi	%hi(NOP), %g3; \
+	or	%g3, %lo(NOP), %g3; \
+	stw	%g3, [%g2 + 0x4]; \
+	flush	%g2;
+
+	.globl	niagara4_patch_copyops
+	.type	niagara4_patch_copyops,#function
+niagara4_patch_copyops:
+	NG_DO_PATCH(memcpy, NG4memcpy)
+	NG_DO_PATCH(raw_copy_from_user, NG4copy_from_user)
+	NG_DO_PATCH(raw_copy_to_user, NG4copy_to_user)
+	retl
+	 nop
+	.size	niagara4_patch_copyops,.-niagara4_patch_copyops
+
+	.globl	niagara4_patch_bzero
+	.type	niagara4_patch_bzero,#function
+niagara4_patch_bzero:
+	NG_DO_PATCH(memset, NG4memset)
+	NG_DO_PATCH(__bzero, NG4bzero)
+	NG_DO_PATCH(__clear_user, NGclear_user)
+	NG_DO_PATCH(tsb_init, NGtsb_init)
+	retl
+	 nop
+	.size	niagara4_patch_bzero,.-niagara4_patch_bzero
+
+	.globl	niagara4_patch_pageops
+	.type	niagara4_patch_pageops,#function
+niagara4_patch_pageops:
+	NG_DO_PATCH(copy_user_page, NG4copy_user_page)
+	NG_DO_PATCH(_clear_page, NG4clear_page)
+	NG_DO_PATCH(clear_user_page, NG4clear_user_page)
+	retl
+	 nop
+	.size	niagara4_patch_pageops,.-niagara4_patch_pageops
+
+ENTRY(niagara4_patch_fls)
+	NG_DO_PATCH(fls, NG4fls)
+	NG_DO_PATCH(__fls, __NG4fls)
+	retl
+	 nop
+ENDPROC(niagara4_patch_fls)
diff --git a/arch/sparc/lib/NGbzero.S b/arch/sparc/lib/NGbzero.S
new file mode 100644
index 000000000..19327614d
--- /dev/null
+++ b/arch/sparc/lib/NGbzero.S
@@ -0,0 +1,161 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* NGbzero.S: Niagara optimized memset/clear_user.
+ *
+ * Copyright (C) 2006 David S. Miller (davem@davemloft.net)
+ */
+#include <asm/asi.h>
+
+#define EX_ST(x,y)		\
+98:	x,y;			\
+	.section __ex_table,"a";\
+	.align 4;		\
+	.word 98b, __retl_o1_asi;\
+	.text;			\
+	.align 4;
+
+	.text
+
+	.globl		NGmemset
+	.type		NGmemset, #function
+NGmemset:		/* %o0=buf, %o1=pat, %o2=len */
+	and		%o1, 0xff, %o3
+	mov		%o2, %o1
+	sllx		%o3, 8, %g1
+	or		%g1, %o3, %o2
+	sllx		%o2, 16, %g1
+	or		%g1, %o2, %o2
+	sllx		%o2, 32, %g1
+	ba,pt		%xcc, 1f
+	 or		%g1, %o2, %o2
+
+	.globl		NGbzero
+	.type		NGbzero, #function
+NGbzero:
+	clr		%o2
+1:	brz,pn		%o1, NGbzero_return
+	 mov		%o0, %o3
+
+	/* %o5: saved %asi, restored at NGbzero_done
+	 * %g7: store-init %asi to use
+	 * %o4:	non-store-init %asi to use
+	 */
+	rd		%asi, %o5
+	mov		ASI_BLK_INIT_QUAD_LDD_P, %g7
+	mov		ASI_P, %o4
+	wr		%o4, 0x0, %asi
+
+NGbzero_from_clear_user:
+	cmp		%o1, 15
+	bl,pn		%icc, NGbzero_tiny
+	 andcc		%o0, 0x7, %g1
+	be,pt		%xcc, 2f
+	 mov		8, %g2
+	sub		%g2, %g1, %g1
+	sub		%o1, %g1, %o1
+1:	EX_ST(stba %o2, [%o0 + 0x00] %asi)
+	subcc		%g1, 1, %g1
+	bne,pt		%xcc, 1b
+	 add		%o0, 1, %o0
+2:	cmp		%o1, 128
+	bl,pn		%icc, NGbzero_medium
+	 andcc		%o0, (64 - 1), %g1
+	be,pt		%xcc, NGbzero_pre_loop
+	 mov		64, %g2
+	sub		%g2, %g1, %g1
+	sub		%o1, %g1, %o1
+1:	EX_ST(stxa %o2, [%o0 + 0x00] %asi)
+	subcc		%g1, 8, %g1
+	bne,pt		%xcc, 1b
+	 add		%o0, 8, %o0
+
+NGbzero_pre_loop:
+	wr		%g7, 0x0, %asi
+	andn		%o1, (64 - 1), %g1
+	sub		%o1, %g1, %o1
+NGbzero_loop:
+	EX_ST(stxa %o2, [%o0 + 0x00] %asi)
+	EX_ST(stxa %o2, [%o0 + 0x08] %asi)
+	EX_ST(stxa %o2, [%o0 + 0x10] %asi)
+	EX_ST(stxa %o2, [%o0 + 0x18] %asi)
+	EX_ST(stxa %o2, [%o0 + 0x20] %asi)
+	EX_ST(stxa %o2, [%o0 + 0x28] %asi)
+	EX_ST(stxa %o2, [%o0 + 0x30] %asi)
+	EX_ST(stxa %o2, [%o0 + 0x38] %asi)
+	subcc		%g1, 64, %g1
+	bne,pt		%xcc, NGbzero_loop
+	 add		%o0, 64, %o0
+
+	membar		#Sync
+	wr		%o4, 0x0, %asi
+	brz,pn		%o1, NGbzero_done
+NGbzero_medium:
+	 andncc		%o1, 0x7, %g1
+	be,pn		%xcc, 2f
+	 sub		%o1, %g1, %o1
+1:	EX_ST(stxa %o2, [%o0 + 0x00] %asi)
+	subcc		%g1, 8, %g1
+	bne,pt		%xcc, 1b
+	 add		%o0, 8, %o0
+2:	brz,pt		%o1, NGbzero_done
+	 nop
+
+NGbzero_tiny:
+1:	EX_ST(stba %o2, [%o0 + 0x00] %asi)
+	subcc		%o1, 1, %o1
+	bne,pt		%icc, 1b
+	 add		%o0, 1, %o0
+
+	/* fallthrough */
+
+NGbzero_done:
+	wr		%o5, 0x0, %asi
+
+NGbzero_return:
+	retl
+	 mov		%o3, %o0
+	.size		NGbzero, .-NGbzero
+	.size		NGmemset, .-NGmemset
+
+	.globl		NGclear_user
+	.type		NGclear_user, #function
+NGclear_user:		/* %o0=buf, %o1=len */
+	rd		%asi, %o5
+	brz,pn		%o1, NGbzero_done
+	 clr		%o3
+	cmp		%o5, ASI_AIUS
+	bne,pn		%icc, NGbzero
+	 clr		%o2
+	mov		ASI_BLK_INIT_QUAD_LDD_AIUS, %g7
+	ba,pt		%xcc, NGbzero_from_clear_user
+	 mov		ASI_AIUS, %o4
+	.size		NGclear_user, .-NGclear_user
+
+#define BRANCH_ALWAYS	0x10680000
+#define NOP		0x01000000
+#define NG_DO_PATCH(OLD, NEW)	\
+	sethi	%hi(NEW), %g1; \
+	or	%g1, %lo(NEW), %g1; \
+	sethi	%hi(OLD), %g2; \
+	or	%g2, %lo(OLD), %g2; \
+	sub	%g1, %g2, %g1; \
+	sethi	%hi(BRANCH_ALWAYS), %g3; \
+	sll	%g1, 11, %g1; \
+	srl	%g1, 11 + 2, %g1; \
+	or	%g3, %lo(BRANCH_ALWAYS), %g3; \
+	or	%g3, %g1, %g3; \
+	stw	%g3, [%g2]; \
+	sethi	%hi(NOP), %g3; \
+	or	%g3, %lo(NOP), %g3; \
+	stw	%g3, [%g2 + 0x4]; \
+	flush	%g2;
+
+	.globl	niagara_patch_bzero
+	.type	niagara_patch_bzero,#function
+niagara_patch_bzero:
+	NG_DO_PATCH(memset, NGmemset)
+	NG_DO_PATCH(__bzero, NGbzero)
+	NG_DO_PATCH(__clear_user, NGclear_user)
+	NG_DO_PATCH(tsb_init, NGtsb_init)
+	retl
+	 nop
+	.size	niagara_patch_bzero,.-niagara_patch_bzero
diff --git a/arch/sparc/lib/NGcopy_from_user.S b/arch/sparc/lib/NGcopy_from_user.S
new file mode 100644
index 000000000..9abc49fcd
--- /dev/null
+++ b/arch/sparc/lib/NGcopy_from_user.S
@@ -0,0 +1,33 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* NGcopy_from_user.S: Niagara optimized copy from userspace.
+ *
+ * Copyright (C) 2006, 2007 David S. Miller (davem@davemloft.net)
+ */
+
+#define EX_LD(x,y)		\
+98:	x;			\
+	.section __ex_table,"a";\
+	.align 4;		\
+	.word 98b, y;		\
+	.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, raw_copy_in_user;		\
+	 nop
+#endif
+
+#include "NGmemcpy.S"
diff --git a/arch/sparc/lib/NGcopy_to_user.S b/arch/sparc/lib/NGcopy_to_user.S
new file mode 100644
index 000000000..9cbe2f18e
--- /dev/null
+++ b/arch/sparc/lib/NGcopy_to_user.S
@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* NGcopy_to_user.S: Niagara optimized copy to userspace.
+ *
+ * Copyright (C) 2006, 2007 David S. Miller (davem@davemloft.net)
+ */
+
+#define EX_ST(x,y)		\
+98:	x;			\
+	.section __ex_table,"a";\
+	.align 4;		\
+	.word 98b, y;		\
+	.text;			\
+	.align 4;
+
+#ifndef ASI_AIUS
+#define ASI_AIUS	0x11
+#endif
+
+#define FUNC_NAME		NGcopy_to_user
+#define STORE(type,src,addr)	type##a src, [addr] ASI_AIUS
+#define STORE_ASI		ASI_BLK_INIT_QUAD_LDD_AIUS
+#define EX_RETVAL(x)		%g0
+
+#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 "NGmemcpy.S"
diff --git a/arch/sparc/lib/NGmemcpy.S b/arch/sparc/lib/NGmemcpy.S
new file mode 100644
index 000000000..8e4d22a6b
--- /dev/null
+++ b/arch/sparc/lib/NGmemcpy.S
@@ -0,0 +1,510 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* NGmemcpy.S: Niagara optimized memcpy.
+ *
+ * Copyright (C) 2006, 2007 David S. Miller (davem@davemloft.net)
+ */
+
+#ifdef __KERNEL__
+#include <linux/linkage.h>
+#include <asm/asi.h>
+#include <asm/thread_info.h>
+#define GLOBAL_SPARE	%g7
+#define RESTORE_ASI(TMP)	\
+	ldub	[%g6 + TI_CURRENT_DS], TMP;  \
+	wr	TMP, 0x0, %asi;
+#else
+#define GLOBAL_SPARE	%g5
+#define RESTORE_ASI(TMP)	\
+	wr	%g0, ASI_PNF, %asi
+#endif
+
+#ifdef __sparc_v9__
+#define SAVE_AMOUNT	128
+#else
+#define SAVE_AMOUNT	64
+#endif
+
+#ifndef STORE_ASI
+#define STORE_ASI	ASI_BLK_INIT_QUAD_LDD_P
+#endif
+
+#ifndef EX_LD
+#define EX_LD(x,y)	x
+#endif
+
+#ifndef EX_ST
+#define EX_ST(x,y)	x
+#endif
+
+#ifndef LOAD
+#ifndef MEMCPY_DEBUG
+#define LOAD(type,addr,dest)	type [addr], dest
+#else
+#define LOAD(type,addr,dest)	type##a [addr] 0x80, dest
+#endif
+#endif
+
+#ifndef LOAD_TWIN
+#define LOAD_TWIN(addr_reg,dest0,dest1)	\
+	ldda [addr_reg] ASI_BLK_INIT_QUAD_LDD_P, dest0
+#endif
+
+#ifndef STORE
+#define STORE(type,src,addr)	type src, [addr]
+#endif
+
+#ifndef STORE_INIT
+#ifndef SIMULATE_NIAGARA_ON_NON_NIAGARA
+#define STORE_INIT(src,addr)	stxa src, [addr] %asi
+#else
+#define STORE_INIT(src,addr)	stx src, [addr + 0x00]
+#endif
+#endif
+
+#ifndef FUNC_NAME
+#define FUNC_NAME	NGmemcpy
+#endif
+
+#ifndef PREAMBLE
+#define PREAMBLE
+#endif
+
+#ifndef XCC
+#define XCC xcc
+#endif
+
+	.register	%g2,#scratch
+	.register	%g3,#scratch
+
+	.text
+#ifndef EX_RETVAL
+#define EX_RETVAL(x)	x
+__restore_asi:
+	ret
+	wr	%g0, ASI_AIUS, %asi
+	 restore
+ENTRY(NG_ret_i2_plus_i4_plus_1)
+	ba,pt	%xcc, __restore_asi
+	 add	%i2, %i5, %i0
+ENDPROC(NG_ret_i2_plus_i4_plus_1)
+ENTRY(NG_ret_i2_plus_g1)
+	ba,pt	%xcc, __restore_asi
+	 add	%i2, %g1, %i0
+ENDPROC(NG_ret_i2_plus_g1)
+ENTRY(NG_ret_i2_plus_g1_minus_8)
+	sub	%g1, 8, %g1
+	ba,pt	%xcc, __restore_asi
+	 add	%i2, %g1, %i0
+ENDPROC(NG_ret_i2_plus_g1_minus_8)
+ENTRY(NG_ret_i2_plus_g1_minus_16)
+	sub	%g1, 16, %g1
+	ba,pt	%xcc, __restore_asi
+	 add	%i2, %g1, %i0
+ENDPROC(NG_ret_i2_plus_g1_minus_16)
+ENTRY(NG_ret_i2_plus_g1_minus_24)
+	sub	%g1, 24, %g1
+	ba,pt	%xcc, __restore_asi
+	 add	%i2, %g1, %i0
+ENDPROC(NG_ret_i2_plus_g1_minus_24)
+ENTRY(NG_ret_i2_plus_g1_minus_32)
+	sub	%g1, 32, %g1
+	ba,pt	%xcc, __restore_asi
+	 add	%i2, %g1, %i0
+ENDPROC(NG_ret_i2_plus_g1_minus_32)
+ENTRY(NG_ret_i2_plus_g1_minus_40)
+	sub	%g1, 40, %g1
+	ba,pt	%xcc, __restore_asi
+	 add	%i2, %g1, %i0
+ENDPROC(NG_ret_i2_plus_g1_minus_40)
+ENTRY(NG_ret_i2_plus_g1_minus_48)
+	sub	%g1, 48, %g1
+	ba,pt	%xcc, __restore_asi
+	 add	%i2, %g1, %i0
+ENDPROC(NG_ret_i2_plus_g1_minus_48)
+ENTRY(NG_ret_i2_plus_g1_minus_56)
+	sub	%g1, 56, %g1
+	ba,pt	%xcc, __restore_asi
+	 add	%i2, %g1, %i0
+ENDPROC(NG_ret_i2_plus_g1_minus_56)
+ENTRY(NG_ret_i2_plus_i4)
+	ba,pt	%xcc, __restore_asi
+	 add	%i2, %i4, %i0
+ENDPROC(NG_ret_i2_plus_i4)
+ENTRY(NG_ret_i2_plus_i4_minus_8)
+	sub	%i4, 8, %i4
+	ba,pt	%xcc, __restore_asi
+	 add	%i2, %i4, %i0
+ENDPROC(NG_ret_i2_plus_i4_minus_8)
+ENTRY(NG_ret_i2_plus_8)
+	ba,pt	%xcc, __restore_asi
+	 add	%i2, 8, %i0
+ENDPROC(NG_ret_i2_plus_8)
+ENTRY(NG_ret_i2_plus_4)
+	ba,pt	%xcc, __restore_asi
+	 add	%i2, 4, %i0
+ENDPROC(NG_ret_i2_plus_4)
+ENTRY(NG_ret_i2_plus_1)
+	ba,pt	%xcc, __restore_asi
+	 add	%i2, 1, %i0
+ENDPROC(NG_ret_i2_plus_1)
+ENTRY(NG_ret_i2_plus_g1_plus_1)
+	add	%g1, 1, %g1
+	ba,pt	%xcc, __restore_asi
+	 add	%i2, %g1, %i0
+ENDPROC(NG_ret_i2_plus_g1_plus_1)
+ENTRY(NG_ret_i2)
+	ba,pt	%xcc, __restore_asi
+	 mov	%i2, %i0
+ENDPROC(NG_ret_i2)
+ENTRY(NG_ret_i2_and_7_plus_i4)
+	and	%i2, 7, %i2
+	ba,pt	%xcc, __restore_asi
+	 add	%i2, %i4, %i0
+ENDPROC(NG_ret_i2_and_7_plus_i4)
+#endif
+
+	.align		64
+
+	.globl	FUNC_NAME
+	.type	FUNC_NAME,#function
+FUNC_NAME:	/* %i0=dst, %i1=src, %i2=len */
+	PREAMBLE
+	save		%sp, -SAVE_AMOUNT, %sp
+	srlx		%i2, 31, %g2
+	cmp		%g2, 0
+	tne		%xcc, 5
+	mov		%i0, %o0
+	cmp		%i2, 0
+	be,pn		%XCC, 85f
+	 or		%o0, %i1, %i3
+	cmp		%i2, 16
+	blu,a,pn	%XCC, 80f
+	 or		%i3, %i2, %i3
+
+	/* 2 blocks (128 bytes) is the minimum we can do the block
+	 * copy with.  We need to ensure that we'll iterate at least
+	 * once in the block copy loop.  At worst we'll need to align
+	 * the destination to a 64-byte boundary which can chew up
+	 * to (64 - 1) bytes from the length before we perform the
+	 * block copy loop.
+	 */
+	cmp		%i2, (2 * 64)
+	blu,pt		%XCC, 70f
+	 andcc		%i3, 0x7, %g0
+
+	/* %o0:	dst
+	 * %i1:	src
+	 * %i2:	len  (known to be >= 128)
+	 *
+	 * The block copy loops will use %i4/%i5,%g2/%g3 as
+	 * temporaries while copying the data.
+	 */
+
+	LOAD(prefetch, %i1, #one_read)
+	wr		%g0, STORE_ASI, %asi
+
+	/* Align destination on 64-byte boundary.  */
+	andcc		%o0, (64 - 1), %i4
+	be,pt		%XCC, 2f
+	 sub		%i4, 64, %i4
+	sub		%g0, %i4, %i4	! bytes to align dst
+	sub		%i2, %i4, %i2
+1:	subcc		%i4, 1, %i4
+	EX_LD(LOAD(ldub, %i1, %g1), NG_ret_i2_plus_i4_plus_1)
+	EX_ST(STORE(stb, %g1, %o0), NG_ret_i2_plus_i4_plus_1)
+	add		%i1, 1, %i1
+	bne,pt		%XCC, 1b
+	add		%o0, 1, %o0
+
+	/* If the source is on a 16-byte boundary we can do
+	 * the direct block copy loop.  If it is 8-byte aligned
+	 * we can do the 16-byte loads offset by -8 bytes and the
+	 * init stores offset by one register.
+	 *
+	 * If the source is not even 8-byte aligned, we need to do
+	 * shifting and masking (basically integer faligndata).
+	 *
+	 * The careful bit with init stores is that if we store
+	 * to any part of the cache line we have to store the whole
+	 * cacheline else we can end up with corrupt L2 cache line
+	 * contents.  Since the loop works on 64-bytes of 64-byte
+	 * aligned store data at a time, this is easy to ensure.
+	 */
+2:
+	andcc		%i1, (16 - 1), %i4
+	andn		%i2, (64 - 1), %g1	! block copy loop iterator
+	be,pt		%XCC, 50f
+	 sub		%i2, %g1, %i2		! final sub-block copy bytes
+
+	cmp		%i4, 8
+	be,pt		%XCC, 10f
+	 sub		%i1, %i4, %i1
+
+	/* Neither 8-byte nor 16-byte aligned, shift and mask.  */
+	and		%i4, 0x7, GLOBAL_SPARE
+	sll		GLOBAL_SPARE, 3, GLOBAL_SPARE
+	mov		64, %i5
+	EX_LD(LOAD_TWIN(%i1, %g2, %g3), NG_ret_i2_plus_g1)
+	sub		%i5, GLOBAL_SPARE, %i5
+	mov		16, %o4
+	mov		32, %o5
+	mov		48, %o7
+	mov		64, %i3
+
+	bg,pn	   	%XCC, 9f
+	 nop
+
+#define MIX_THREE_WORDS(WORD1, WORD2, WORD3, PRE_SHIFT, POST_SHIFT, TMP) \
+	sllx		WORD1, POST_SHIFT, WORD1; \
+	srlx		WORD2, PRE_SHIFT, TMP; \
+	sllx		WORD2, POST_SHIFT, WORD2; \
+	or		WORD1, TMP, WORD1; \
+	srlx		WORD3, PRE_SHIFT, TMP; \
+	or		WORD2, TMP, WORD2;
+
+8:	EX_LD(LOAD_TWIN(%i1 + %o4, %o2, %o3), NG_ret_i2_plus_g1)
+	MIX_THREE_WORDS(%g2, %g3, %o2, %i5, GLOBAL_SPARE, %o1)
+	LOAD(prefetch, %i1 + %i3, #one_read)
+
+	EX_ST(STORE_INIT(%g2, %o0 + 0x00), NG_ret_i2_plus_g1)
+	EX_ST(STORE_INIT(%g3, %o0 + 0x08), NG_ret_i2_plus_g1_minus_8)
+
+	EX_LD(LOAD_TWIN(%i1 + %o5, %g2, %g3), NG_ret_i2_plus_g1_minus_16)
+	MIX_THREE_WORDS(%o2, %o3, %g2, %i5, GLOBAL_SPARE, %o1)
+
+	EX_ST(STORE_INIT(%o2, %o0 + 0x10), NG_ret_i2_plus_g1_minus_16)
+	EX_ST(STORE_INIT(%o3, %o0 + 0x18), NG_ret_i2_plus_g1_minus_24)
+
+	EX_LD(LOAD_TWIN(%i1 + %o7, %o2, %o3), NG_ret_i2_plus_g1_minus_32)
+	MIX_THREE_WORDS(%g2, %g3, %o2, %i5, GLOBAL_SPARE, %o1)
+
+	EX_ST(STORE_INIT(%g2, %o0 + 0x20), NG_ret_i2_plus_g1_minus_32)
+	EX_ST(STORE_INIT(%g3, %o0 + 0x28), NG_ret_i2_plus_g1_minus_40)
+
+	EX_LD(LOAD_TWIN(%i1 + %i3, %g2, %g3), NG_ret_i2_plus_g1_minus_48)
+	add		%i1, 64, %i1
+	MIX_THREE_WORDS(%o2, %o3, %g2, %i5, GLOBAL_SPARE, %o1)
+
+	EX_ST(STORE_INIT(%o2, %o0 + 0x30), NG_ret_i2_plus_g1_minus_48)
+	EX_ST(STORE_INIT(%o3, %o0 + 0x38), NG_ret_i2_plus_g1_minus_56)
+
+	subcc		%g1, 64, %g1
+	bne,pt		%XCC, 8b
+	 add		%o0, 64, %o0
+
+	ba,pt		%XCC, 60f
+	 add		%i1, %i4, %i1
+
+9:	EX_LD(LOAD_TWIN(%i1 + %o4, %o2, %o3), NG_ret_i2_plus_g1)
+	MIX_THREE_WORDS(%g3, %o2, %o3, %i5, GLOBAL_SPARE, %o1)
+	LOAD(prefetch, %i1 + %i3, #one_read)
+
+	EX_ST(STORE_INIT(%g3, %o0 + 0x00), NG_ret_i2_plus_g1)
+	EX_ST(STORE_INIT(%o2, %o0 + 0x08), NG_ret_i2_plus_g1_minus_8)
+
+	EX_LD(LOAD_TWIN(%i1 + %o5, %g2, %g3), NG_ret_i2_plus_g1_minus_16)
+	MIX_THREE_WORDS(%o3, %g2, %g3, %i5, GLOBAL_SPARE, %o1)
+
+	EX_ST(STORE_INIT(%o3, %o0 + 0x10), NG_ret_i2_plus_g1_minus_16)
+	EX_ST(STORE_INIT(%g2, %o0 + 0x18), NG_ret_i2_plus_g1_minus_24)
+
+	EX_LD(LOAD_TWIN(%i1 + %o7, %o2, %o3), NG_ret_i2_plus_g1_minus_32)
+	MIX_THREE_WORDS(%g3, %o2, %o3, %i5, GLOBAL_SPARE, %o1)
+
+	EX_ST(STORE_INIT(%g3, %o0 + 0x20), NG_ret_i2_plus_g1_minus_32)
+	EX_ST(STORE_INIT(%o2, %o0 + 0x28), NG_ret_i2_plus_g1_minus_40)
+
+	EX_LD(LOAD_TWIN(%i1 + %i3, %g2, %g3), NG_ret_i2_plus_g1_minus_48)
+	add		%i1, 64, %i1
+	MIX_THREE_WORDS(%o3, %g2, %g3, %i5, GLOBAL_SPARE, %o1)
+
+	EX_ST(STORE_INIT(%o3, %o0 + 0x30), NG_ret_i2_plus_g1_minus_48)
+	EX_ST(STORE_INIT(%g2, %o0 + 0x38), NG_ret_i2_plus_g1_minus_56)
+
+	subcc		%g1, 64, %g1
+	bne,pt		%XCC, 9b
+	 add		%o0, 64, %o0
+
+	ba,pt		%XCC, 60f
+	 add		%i1, %i4, %i1
+
+10:	/* Destination is 64-byte aligned, source was only 8-byte
+	 * aligned but it has been subtracted by 8 and we perform
+	 * one twin load ahead, then add 8 back into source when
+	 * we finish the loop.
+	 */
+	EX_LD(LOAD_TWIN(%i1, %o4, %o5), NG_ret_i2_plus_g1)
+	mov	16, %o7
+	mov	32, %g2
+	mov	48, %g3
+	mov	64, %o1
+1:	EX_LD(LOAD_TWIN(%i1 + %o7, %o2, %o3), NG_ret_i2_plus_g1)
+	LOAD(prefetch, %i1 + %o1, #one_read)
+	EX_ST(STORE_INIT(%o5, %o0 + 0x00), NG_ret_i2_plus_g1)	! initializes cache line
+	EX_ST(STORE_INIT(%o2, %o0 + 0x08), NG_ret_i2_plus_g1_minus_8)
+	EX_LD(LOAD_TWIN(%i1 + %g2, %o4, %o5), NG_ret_i2_plus_g1_minus_16)
+	EX_ST(STORE_INIT(%o3, %o0 + 0x10), NG_ret_i2_plus_g1_minus_16)
+	EX_ST(STORE_INIT(%o4, %o0 + 0x18), NG_ret_i2_plus_g1_minus_24)
+	EX_LD(LOAD_TWIN(%i1 + %g3, %o2, %o3), NG_ret_i2_plus_g1_minus_32)
+	EX_ST(STORE_INIT(%o5, %o0 + 0x20), NG_ret_i2_plus_g1_minus_32)
+	EX_ST(STORE_INIT(%o2, %o0 + 0x28), NG_ret_i2_plus_g1_minus_40)
+	EX_LD(LOAD_TWIN(%i1 + %o1, %o4, %o5), NG_ret_i2_plus_g1_minus_48)
+	add		%i1, 64, %i1
+	EX_ST(STORE_INIT(%o3, %o0 + 0x30), NG_ret_i2_plus_g1_minus_48)
+	EX_ST(STORE_INIT(%o4, %o0 + 0x38), NG_ret_i2_plus_g1_minus_56)
+	subcc		%g1, 64, %g1
+	bne,pt		%XCC, 1b
+	 add		%o0, 64, %o0
+
+	ba,pt		%XCC, 60f
+	 add		%i1, 0x8, %i1
+
+50:	/* Destination is 64-byte aligned, and source is 16-byte
+	 * aligned.
+	 */
+	mov	16, %o7
+	mov	32, %g2
+	mov	48, %g3
+	mov	64, %o1
+1:	EX_LD(LOAD_TWIN(%i1 + %g0, %o4, %o5), NG_ret_i2_plus_g1)
+	EX_LD(LOAD_TWIN(%i1 + %o7, %o2, %o3), NG_ret_i2_plus_g1)
+	LOAD(prefetch, %i1 + %o1, #one_read)
+	EX_ST(STORE_INIT(%o4, %o0 + 0x00), NG_ret_i2_plus_g1)	! initializes cache line
+	EX_ST(STORE_INIT(%o5, %o0 + 0x08), NG_ret_i2_plus_g1_minus_8)
+	EX_LD(LOAD_TWIN(%i1 + %g2, %o4, %o5), NG_ret_i2_plus_g1_minus_16)
+	EX_ST(STORE_INIT(%o2, %o0 + 0x10), NG_ret_i2_plus_g1_minus_16)
+	EX_ST(STORE_INIT(%o3, %o0 + 0x18), NG_ret_i2_plus_g1_minus_24)
+	EX_LD(LOAD_TWIN(%i1 + %g3, %o2, %o3), NG_ret_i2_plus_g1_minus_32)
+	add	%i1, 64, %i1
+	EX_ST(STORE_INIT(%o4, %o0 + 0x20), NG_ret_i2_plus_g1_minus_32)
+	EX_ST(STORE_INIT(%o5, %o0 + 0x28), NG_ret_i2_plus_g1_minus_40)
+	EX_ST(STORE_INIT(%o2, %o0 + 0x30), NG_ret_i2_plus_g1_minus_48)
+	EX_ST(STORE_INIT(%o3, %o0 + 0x38), NG_ret_i2_plus_g1_minus_56)
+	subcc	%g1, 64, %g1
+	bne,pt	%XCC, 1b
+	 add	%o0, 64, %o0
+	/* fall through */
+
+60:	
+	membar		#Sync
+
+	/* %i2 contains any final bytes still needed to be copied
+	 * over. If anything is left, we copy it one byte at a time.
+	 */
+	RESTORE_ASI(%i3)
+	brz,pt		%i2, 85f
+	 sub		%o0, %i1, %i3
+	ba,a,pt		%XCC, 90f
+	 nop
+
+	.align		64
+70: /* 16 < len <= 64 */
+	bne,pn		%XCC, 75f
+	 sub		%o0, %i1, %i3
+
+72:
+	andn		%i2, 0xf, %i4
+	and		%i2, 0xf, %i2
+1:	subcc		%i4, 0x10, %i4
+	EX_LD(LOAD(ldx, %i1, %o4), NG_ret_i2_plus_i4)
+	add		%i1, 0x08, %i1
+	EX_LD(LOAD(ldx, %i1, %g1), NG_ret_i2_plus_i4)
+	sub		%i1, 0x08, %i1
+	EX_ST(STORE(stx, %o4, %i1 + %i3), NG_ret_i2_plus_i4)
+	add		%i1, 0x8, %i1
+	EX_ST(STORE(stx, %g1, %i1 + %i3), NG_ret_i2_plus_i4_minus_8)
+	bgu,pt		%XCC, 1b
+	 add		%i1, 0x8, %i1
+73:	andcc		%i2, 0x8, %g0
+	be,pt		%XCC, 1f
+	 nop
+	sub		%i2, 0x8, %i2
+	EX_LD(LOAD(ldx, %i1, %o4), NG_ret_i2_plus_8)
+	EX_ST(STORE(stx, %o4, %i1 + %i3), NG_ret_i2_plus_8)
+	add		%i1, 0x8, %i1
+1:	andcc		%i2, 0x4, %g0
+	be,pt		%XCC, 1f
+	 nop
+	sub		%i2, 0x4, %i2
+	EX_LD(LOAD(lduw, %i1, %i5), NG_ret_i2_plus_4)
+	EX_ST(STORE(stw, %i5, %i1 + %i3), NG_ret_i2_plus_4)
+	add		%i1, 0x4, %i1
+1:	cmp		%i2, 0
+	be,pt		%XCC, 85f
+	 nop
+	ba,pt		%xcc, 90f
+	 nop
+
+75:
+	andcc		%o0, 0x7, %g1
+	sub		%g1, 0x8, %g1
+	be,pn		%icc, 2f
+	 sub		%g0, %g1, %g1
+	sub		%i2, %g1, %i2
+
+1:	subcc		%g1, 1, %g1
+	EX_LD(LOAD(ldub, %i1, %i5), NG_ret_i2_plus_g1_plus_1)
+	EX_ST(STORE(stb, %i5, %i1 + %i3), NG_ret_i2_plus_g1_plus_1)
+	bgu,pt		%icc, 1b
+	 add		%i1, 1, %i1
+
+2:	add		%i1, %i3, %o0
+	andcc		%i1, 0x7, %g1
+	bne,pt		%icc, 8f
+	 sll		%g1, 3, %g1
+
+	cmp		%i2, 16
+	bgeu,pt		%icc, 72b
+	 nop
+	ba,a,pt		%xcc, 73b
+
+8:	mov		64, %i3
+	andn		%i1, 0x7, %i1
+	EX_LD(LOAD(ldx, %i1, %g2), NG_ret_i2)
+	sub		%i3, %g1, %i3
+	andn		%i2, 0x7, %i4
+	sllx		%g2, %g1, %g2
+1:	add		%i1, 0x8, %i1
+	EX_LD(LOAD(ldx, %i1, %g3), NG_ret_i2_and_7_plus_i4)
+	subcc		%i4, 0x8, %i4
+	srlx		%g3, %i3, %i5
+	or		%i5, %g2, %i5
+	EX_ST(STORE(stx, %i5, %o0), NG_ret_i2_and_7_plus_i4)
+	add		%o0, 0x8, %o0
+	bgu,pt		%icc, 1b
+	 sllx		%g3, %g1, %g2
+
+	srl		%g1, 3, %g1
+	andcc		%i2, 0x7, %i2
+	be,pn		%icc, 85f
+	 add		%i1, %g1, %i1
+	ba,pt		%xcc, 90f
+	 sub		%o0, %i1, %i3
+
+	.align		64
+80: /* 0 < len <= 16 */
+	andcc		%i3, 0x3, %g0
+	bne,pn		%XCC, 90f
+	 sub		%o0, %i1, %i3
+
+1:
+	subcc		%i2, 4, %i2
+	EX_LD(LOAD(lduw, %i1, %g1), NG_ret_i2_plus_4)
+	EX_ST(STORE(stw, %g1, %i1 + %i3), NG_ret_i2_plus_4)
+	bgu,pt		%XCC, 1b
+	 add		%i1, 4, %i1
+
+85:	ret
+	 restore	EX_RETVAL(%i0), %g0, %o0
+
+	.align		32
+90:
+	subcc		%i2, 1, %i2
+	EX_LD(LOAD(ldub, %i1, %g1), NG_ret_i2_plus_1)
+	EX_ST(STORE(stb, %g1, %i1 + %i3), NG_ret_i2_plus_1)
+	bgu,pt		%XCC, 90b
+	 add		%i1, 1, %i1
+	ret
+	 restore	EX_RETVAL(%i0), %g0, %o0
+
+	.size		FUNC_NAME, .-FUNC_NAME
diff --git a/arch/sparc/lib/NGpage.S b/arch/sparc/lib/NGpage.S
new file mode 100644
index 000000000..88fec7818
--- /dev/null
+++ b/arch/sparc/lib/NGpage.S
@@ -0,0 +1,138 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* NGpage.S: Niagara optimize clear and copy page.
+ *
+ * Copyright (C) 2006 (davem@davemloft.net)
+ */
+
+#include <asm/asi.h>
+#include <asm/page.h>
+
+	.text
+	.align	32
+
+	/* This is heavily simplified from the sun4u variants
+	 * because Niagara does not have any D-cache aliasing issues
+	 * and also we don't need to use the FPU in order to implement
+	 * an optimal page copy/clear.
+	 */
+
+NGcopy_user_page:	/* %o0=dest, %o1=src, %o2=vaddr */
+	save		%sp, -192, %sp
+	rd		%asi, %g3
+	wr		%g0, ASI_BLK_INIT_QUAD_LDD_P, %asi
+	set		PAGE_SIZE, %g7
+	prefetch	[%i1 + 0x00], #one_read
+	prefetch	[%i1 + 0x40], #one_read
+
+1:	prefetch	[%i1 + 0x80], #one_read
+	prefetch	[%i1 + 0xc0], #one_read
+	ldda		[%i1 + 0x00] %asi, %o2
+	ldda		[%i1 + 0x10] %asi, %o4
+	ldda		[%i1 + 0x20] %asi, %l2
+	ldda		[%i1 + 0x30] %asi, %l4
+	stxa		%o2, [%i0 + 0x00] %asi
+	stxa		%o3, [%i0 + 0x08] %asi
+	stxa		%o4, [%i0 + 0x10] %asi
+	stxa		%o5, [%i0 + 0x18] %asi
+	stxa		%l2, [%i0 + 0x20] %asi
+	stxa		%l3, [%i0 + 0x28] %asi
+	stxa		%l4, [%i0 + 0x30] %asi
+	stxa		%l5, [%i0 + 0x38] %asi
+	ldda		[%i1 + 0x40] %asi, %o2
+	ldda		[%i1 + 0x50] %asi, %o4
+	ldda		[%i1 + 0x60] %asi, %l2
+	ldda		[%i1 + 0x70] %asi, %l4
+	stxa		%o2, [%i0 + 0x40] %asi
+	stxa		%o3, [%i0 + 0x48] %asi
+	stxa		%o4, [%i0 + 0x50] %asi
+	stxa		%o5, [%i0 + 0x58] %asi
+	stxa		%l2, [%i0 + 0x60] %asi
+	stxa		%l3, [%i0 + 0x68] %asi
+	stxa		%l4, [%i0 + 0x70] %asi
+	stxa		%l5, [%i0 + 0x78] %asi
+	add		%i1, 128, %i1
+	subcc		%g7, 128, %g7
+	bne,pt		%xcc, 1b
+	 add		%i0, 128, %i0
+	wr		%g3, 0x0, %asi
+	membar		#Sync
+	ret
+	 restore
+
+	.align		32
+	.globl		NGclear_page
+	.globl		NGclear_user_page
+NGclear_page:		/* %o0=dest */
+NGclear_user_page:	/* %o0=dest, %o1=vaddr */
+	rd		%asi, %g3
+	wr		%g0, ASI_BLK_INIT_QUAD_LDD_P, %asi
+	set		PAGE_SIZE, %g7
+
+1:	stxa		%g0, [%o0 + 0x00] %asi
+	stxa		%g0, [%o0 + 0x08] %asi
+	stxa		%g0, [%o0 + 0x10] %asi
+	stxa		%g0, [%o0 + 0x18] %asi
+	stxa		%g0, [%o0 + 0x20] %asi
+	stxa		%g0, [%o0 + 0x28] %asi
+	stxa		%g0, [%o0 + 0x30] %asi
+	stxa		%g0, [%o0 + 0x38] %asi
+	stxa		%g0, [%o0 + 0x40] %asi
+	stxa		%g0, [%o0 + 0x48] %asi
+	stxa		%g0, [%o0 + 0x50] %asi
+	stxa		%g0, [%o0 + 0x58] %asi
+	stxa		%g0, [%o0 + 0x60] %asi
+	stxa		%g0, [%o0 + 0x68] %asi
+	stxa		%g0, [%o0 + 0x70] %asi
+	stxa		%g0, [%o0 + 0x78] %asi
+	stxa		%g0, [%o0 + 0x80] %asi
+	stxa		%g0, [%o0 + 0x88] %asi
+	stxa		%g0, [%o0 + 0x90] %asi
+	stxa		%g0, [%o0 + 0x98] %asi
+	stxa		%g0, [%o0 + 0xa0] %asi
+	stxa		%g0, [%o0 + 0xa8] %asi
+	stxa		%g0, [%o0 + 0xb0] %asi
+	stxa		%g0, [%o0 + 0xb8] %asi
+	stxa		%g0, [%o0 + 0xc0] %asi
+	stxa		%g0, [%o0 + 0xc8] %asi
+	stxa		%g0, [%o0 + 0xd0] %asi
+	stxa		%g0, [%o0 + 0xd8] %asi
+	stxa		%g0, [%o0 + 0xe0] %asi
+	stxa		%g0, [%o0 + 0xe8] %asi
+	stxa		%g0, [%o0 + 0xf0] %asi
+	stxa		%g0, [%o0 + 0xf8] %asi
+	subcc		%g7, 256, %g7
+	bne,pt		%xcc, 1b
+	 add		%o0, 256, %o0
+	wr		%g3, 0x0, %asi
+	membar		#Sync
+	retl
+	 nop
+
+#define BRANCH_ALWAYS	0x10680000
+#define NOP		0x01000000
+#define NG_DO_PATCH(OLD, NEW)	\
+	sethi	%hi(NEW), %g1; \
+	or	%g1, %lo(NEW), %g1; \
+	sethi	%hi(OLD), %g2; \
+	or	%g2, %lo(OLD), %g2; \
+	sub	%g1, %g2, %g1; \
+	sethi	%hi(BRANCH_ALWAYS), %g3; \
+	sll	%g1, 11, %g1; \
+	srl	%g1, 11 + 2, %g1; \
+	or	%g3, %lo(BRANCH_ALWAYS), %g3; \
+	or	%g3, %g1, %g3; \
+	stw	%g3, [%g2]; \
+	sethi	%hi(NOP), %g3; \
+	or	%g3, %lo(NOP), %g3; \
+	stw	%g3, [%g2 + 0x4]; \
+	flush	%g2;
+
+	.globl	niagara_patch_pageops
+	.type	niagara_patch_pageops,#function
+niagara_patch_pageops:
+	NG_DO_PATCH(copy_user_page, NGcopy_user_page)
+	NG_DO_PATCH(_clear_page, NGclear_page)
+	NG_DO_PATCH(clear_user_page, NGclear_user_page)
+	retl
+	 nop
+	.size	niagara_patch_pageops,.-niagara_patch_pageops
diff --git a/arch/sparc/lib/NGpatch.S b/arch/sparc/lib/NGpatch.S
new file mode 100644
index 000000000..e9f843f10
--- /dev/null
+++ b/arch/sparc/lib/NGpatch.S
@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* NGpatch.S: Patch Ultra-I routines with Niagara variant.
+ *
+ * Copyright (C) 2006 David S. Miller <davem@davemloft.net>
+ */
+
+#define BRANCH_ALWAYS	0x10680000
+#define NOP		0x01000000
+#define NG_DO_PATCH(OLD, NEW)	\
+	sethi	%hi(NEW), %g1; \
+	or	%g1, %lo(NEW), %g1; \
+	sethi	%hi(OLD), %g2; \
+	or	%g2, %lo(OLD), %g2; \
+	sub	%g1, %g2, %g1; \
+	sethi	%hi(BRANCH_ALWAYS), %g3; \
+	sll	%g1, 11, %g1; \
+	srl	%g1, 11 + 2, %g1; \
+	or	%g3, %lo(BRANCH_ALWAYS), %g3; \
+	or	%g3, %g1, %g3; \
+	stw	%g3, [%g2]; \
+	sethi	%hi(NOP), %g3; \
+	or	%g3, %lo(NOP), %g3; \
+	stw	%g3, [%g2 + 0x4]; \
+	flush	%g2;
+
+	.globl	niagara_patch_copyops
+	.type	niagara_patch_copyops,#function
+niagara_patch_copyops:
+	NG_DO_PATCH(memcpy, NGmemcpy)
+	NG_DO_PATCH(raw_copy_from_user, NGcopy_from_user)
+	NG_DO_PATCH(raw_copy_to_user, NGcopy_to_user)
+	retl
+	 nop
+	.size	niagara_patch_copyops,.-niagara_patch_copyops
diff --git a/arch/sparc/lib/PeeCeeI.c b/arch/sparc/lib/PeeCeeI.c
new file mode 100644
index 000000000..cde4c9a51
--- /dev/null
+++ b/arch/sparc/lib/PeeCeeI.c
@@ -0,0 +1,212 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * PeeCeeI.c: The emerging standard...
+ *
+ * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#include <linux/module.h>
+
+#include <asm/io.h>
+#include <asm/byteorder.h>
+
+void outsb(unsigned long __addr, const void *src, unsigned long count)
+{
+	void __iomem *addr = (void __iomem *) __addr;
+	const u8 *p = src;
+
+	while (count--)
+		__raw_writeb(*p++, addr);
+}
+EXPORT_SYMBOL(outsb);
+
+void outsw(unsigned long __addr, const void *src, unsigned long count)
+{
+	void __iomem *addr = (void __iomem *) __addr;
+
+	while (count--) {
+		__raw_writew(*(u16 *)src, addr);
+		src += sizeof(u16);
+	}
+}
+EXPORT_SYMBOL(outsw);
+
+void outsl(unsigned long __addr, const void *src, unsigned long count)
+{
+	void __iomem *addr = (void __iomem *) __addr;
+	u32 l, l2;
+
+	if (!count)
+		return;
+
+	switch (((unsigned long)src) & 0x3) {
+	case 0x0:
+		/* src is naturally aligned */
+		while (count--) {
+			__raw_writel(*(u32 *)src, addr);
+			src += sizeof(u32);
+		}
+		break;
+	case 0x2:
+		/* 2-byte alignment */
+		while (count--) {
+			l = (*(u16 *)src) << 16;
+			l |= *(u16 *)(src + sizeof(u16));
+			__raw_writel(l, addr);
+			src += sizeof(u32);
+		}
+		break;
+	case 0x1:
+		/* Hold three bytes in l each time, grab a byte from l2 */
+		l = (*(u8 *)src) << 24;
+		l |= (*(u16 *)(src + sizeof(u8))) << 8;
+		src += sizeof(u8) + sizeof(u16);
+		while (count--) {
+			l2 = *(u32 *)src;
+			l |= (l2 >> 24);
+			__raw_writel(l, addr);
+			l = l2 << 8;
+			src += sizeof(u32);
+		}
+		break;
+	case 0x3:
+		/* Hold a byte in l each time, grab 3 bytes from l2 */
+		l = (*(u8 *)src) << 24;
+		src += sizeof(u8);
+		while (count--) {
+			l2 = *(u32 *)src;
+			l |= (l2 >> 8);
+			__raw_writel(l, addr);
+			l = l2 << 24;
+			src += sizeof(u32);
+		}
+		break;
+	}
+}
+EXPORT_SYMBOL(outsl);
+
+void insb(unsigned long __addr, void *dst, unsigned long count)
+{
+	void __iomem *addr = (void __iomem *) __addr;
+
+	if (count) {
+		u32 *pi;
+		u8 *pb = dst;
+
+		while ((((unsigned long)pb) & 0x3) && count--)
+			*pb++ = __raw_readb(addr);
+		pi = (u32 *)pb;
+		while (count >= 4) {
+			u32 w;
+
+			w  = (__raw_readb(addr) << 24);
+			w |= (__raw_readb(addr) << 16);
+			w |= (__raw_readb(addr) << 8);
+			w |= (__raw_readb(addr) << 0);
+			*pi++ = w;
+			count -= 4;
+		}
+		pb = (u8 *)pi;
+		while (count--)
+			*pb++ = __raw_readb(addr);
+	}
+}
+EXPORT_SYMBOL(insb);
+
+void insw(unsigned long __addr, void *dst, unsigned long count)
+{
+	void __iomem *addr = (void __iomem *) __addr;
+
+	if (count) {
+		u16 *ps = dst;
+		u32 *pi;
+
+		if (((unsigned long)ps) & 0x2) {
+			*ps++ = __raw_readw(addr);
+			count--;
+		}
+		pi = (u32 *)ps;
+		while (count >= 2) {
+			u32 w;
+
+			w  = __raw_readw(addr) << 16;
+			w |= __raw_readw(addr) << 0;
+			*pi++ = w;
+			count -= 2;
+		}
+		ps = (u16 *)pi;
+		if (count)
+			*ps = __raw_readw(addr);
+	}
+}
+EXPORT_SYMBOL(insw);
+
+void insl(unsigned long __addr, void *dst, unsigned long count)
+{
+	void __iomem *addr = (void __iomem *) __addr;
+
+	if (count) {
+		if ((((unsigned long)dst) & 0x3) == 0) {
+			u32 *pi = dst;
+			while (count--)
+				*pi++ = __raw_readl(addr);
+		} else {
+			u32 l = 0, l2, *pi;
+			u16 *ps;
+			u8 *pb;
+
+			switch (((unsigned long)dst) & 3) {
+			case 0x2:
+				ps = dst;
+				count -= 1;
+				l = __raw_readl(addr);
+				*ps++ = l;
+				pi = (u32 *)ps;
+				while (count--) {
+					l2 = __raw_readl(addr);
+					*pi++ = (l << 16) | (l2 >> 16);
+					l = l2;
+				}
+				ps = (u16 *)pi;
+				*ps = l;
+				break;
+
+			case 0x1:
+				pb = dst;
+				count -= 1;
+				l = __raw_readl(addr);
+				*pb++ = l >> 24;
+				ps = (u16 *)pb;
+				*ps++ = ((l >> 8) & 0xffff);
+				pi = (u32 *)ps;
+				while (count--) {
+					l2 = __raw_readl(addr);
+					*pi++ = (l << 24) | (l2 >> 8);
+					l = l2;
+				}
+				pb = (u8 *)pi;
+				*pb = l;
+				break;
+
+			case 0x3:
+				pb = (u8 *)dst;
+				count -= 1;
+				l = __raw_readl(addr);
+				*pb++ = l >> 24;
+				pi = (u32 *)pb;
+				while (count--) {
+					l2 = __raw_readl(addr);
+					*pi++ = (l << 8) | (l2 >> 24);
+					l = l2;
+				}
+				ps = (u16 *)pi;
+				*ps++ = ((l >> 8) & 0xffff);
+				pb = (u8 *)ps;
+				*pb = l;
+				break;
+			}
+		}
+	}
+}
+EXPORT_SYMBOL(insl);
+
diff --git a/arch/sparc/lib/U1copy_from_user.S b/arch/sparc/lib/U1copy_from_user.S
new file mode 100644
index 000000000..bf08d1c78
--- /dev/null
+++ b/arch/sparc/lib/U1copy_from_user.S
@@ -0,0 +1,38 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* U1copy_from_user.S: UltraSparc-I/II/IIi/IIe optimized copy from userspace.
+ *
+ * Copyright (C) 1999, 2000, 2004 David S. Miller (davem@redhat.com)
+ */
+
+#define EX_LD(x,y)		\
+98:	x;			\
+	.section __ex_table,"a";\
+	.align 4;		\
+	.word 98b, y;		\
+	.text;			\
+	.align 4;
+
+#define EX_LD_FP(x,y)		\
+98:	x;			\
+	.section __ex_table,"a";\
+	.align 4;		\
+	.word 98b, y;		\
+	.text;			\
+	.align 4;
+
+#define FUNC_NAME		raw_copy_from_user
+#define LOAD(type,addr,dest)	type##a [addr] %asi, dest
+#define LOAD_BLK(addr,dest)	ldda [addr] ASI_BLK_AIUS, dest
+#define EX_RETVAL(x)		0
+
+	/* 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;						\
+
+#include "U1memcpy.S"
diff --git a/arch/sparc/lib/U1copy_to_user.S b/arch/sparc/lib/U1copy_to_user.S
new file mode 100644
index 000000000..15169851e
--- /dev/null
+++ b/arch/sparc/lib/U1copy_to_user.S
@@ -0,0 +1,38 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* U1copy_to_user.S: UltraSparc-I/II/IIi/IIe optimized copy to userspace.
+ *
+ * Copyright (C) 1999, 2000, 2004 David S. Miller (davem@redhat.com)
+ */
+
+#define EX_ST(x,y)		\
+98:	x;			\
+	.section __ex_table,"a";\
+	.align 4;		\
+	.word 98b, y;		\
+	.text;			\
+	.align 4;
+
+#define EX_ST_FP(x,y)		\
+98:	x;			\
+	.section __ex_table,"a";\
+	.align 4;		\
+	.word 98b, y;		\
+	.text;			\
+	.align 4;
+
+#define FUNC_NAME		raw_copy_to_user
+#define STORE(type,src,addr)	type##a src, [addr] ASI_AIUS
+#define STORE_BLK(src,addr)	stda src, [addr] ASI_BLK_AIUS
+#define EX_RETVAL(x)		0
+
+	/* 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;						\
+
+#include "U1memcpy.S"
diff --git a/arch/sparc/lib/U1memcpy.S b/arch/sparc/lib/U1memcpy.S
new file mode 100644
index 000000000..a6f4ee391
--- /dev/null
+++ b/arch/sparc/lib/U1memcpy.S
@@ -0,0 +1,685 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* U1memcpy.S: UltraSPARC-I/II/IIi/IIe optimized memcpy.
+ *
+ * Copyright (C) 1997, 2004 David S. Miller (davem@redhat.com)
+ * Copyright (C) 1996, 1997, 1998, 1999 Jakub Jelinek (jj@ultra.linux.cz)
+ */
+
+#ifdef __KERNEL__
+#include <linux/linkage.h>
+#include <asm/visasm.h>
+#include <asm/asi.h>
+#include <asm/export.h>
+#define GLOBAL_SPARE	g7
+#else
+#define GLOBAL_SPARE	g5
+#define ASI_BLK_P 0xf0
+#define FPRS_FEF  0x04
+#ifdef MEMCPY_DEBUG
+#define VISEntry rd %fprs, %o5; wr %g0, FPRS_FEF, %fprs; \
+		 clr %g1; clr %g2; clr %g3; subcc %g0, %g0, %g0;
+#define VISExit and %o5, FPRS_FEF, %o5; wr %o5, 0x0, %fprs
+#else
+#define VISEntry rd %fprs, %o5; wr %g0, FPRS_FEF, %fprs
+#define VISExit and %o5, FPRS_FEF, %o5; wr %o5, 0x0, %fprs
+#endif
+#endif
+
+#ifndef EX_LD
+#define EX_LD(x,y)	x
+#endif
+#ifndef EX_LD_FP
+#define EX_LD_FP(x,y)	x
+#endif
+
+#ifndef EX_ST
+#define EX_ST(x,y)	x
+#endif
+#ifndef EX_ST_FP
+#define EX_ST_FP(x,y)	x
+#endif
+
+#ifndef LOAD
+#define LOAD(type,addr,dest)	type [addr], dest
+#endif
+
+#ifndef LOAD_BLK
+#define LOAD_BLK(addr,dest)	ldda [addr] ASI_BLK_P, dest
+#endif
+
+#ifndef STORE
+#define STORE(type,src,addr)	type src, [addr]
+#endif
+
+#ifndef STORE_BLK
+#define STORE_BLK(src,addr)	stda src, [addr] ASI_BLK_P
+#endif
+
+#ifndef FUNC_NAME
+#define FUNC_NAME	memcpy
+#endif
+
+#ifndef PREAMBLE
+#define PREAMBLE
+#endif
+
+#ifndef XCC
+#define XCC xcc
+#endif
+
+#define FREG_FROB(f1, f2, f3, f4, f5, f6, f7, f8, f9)		\
+	faligndata		%f1, %f2, %f48;			\
+	faligndata		%f2, %f3, %f50;			\
+	faligndata		%f3, %f4, %f52;			\
+	faligndata		%f4, %f5, %f54;			\
+	faligndata		%f5, %f6, %f56;			\
+	faligndata		%f6, %f7, %f58;			\
+	faligndata		%f7, %f8, %f60;			\
+	faligndata		%f8, %f9, %f62;
+
+#define MAIN_LOOP_CHUNK(src, dest, fdest, fsrc, jmptgt)			\
+	EX_LD_FP(LOAD_BLK(%src, %fdest), U1_gs_80_fp);			\
+	EX_ST_FP(STORE_BLK(%fsrc, %dest), U1_gs_80_fp);			\
+	add			%src, 0x40, %src;			\
+	subcc			%GLOBAL_SPARE, 0x40, %GLOBAL_SPARE;	\
+	be,pn			%xcc, jmptgt;				\
+	 add			%dest, 0x40, %dest;			\
+
+#define LOOP_CHUNK1(src, dest, branch_dest)		\
+	MAIN_LOOP_CHUNK(src, dest, f0,  f48, branch_dest)
+#define LOOP_CHUNK2(src, dest, branch_dest)		\
+	MAIN_LOOP_CHUNK(src, dest, f16, f48, branch_dest)
+#define LOOP_CHUNK3(src, dest, branch_dest)		\
+	MAIN_LOOP_CHUNK(src, dest, f32, f48, branch_dest)
+
+#define DO_SYNC			membar	#Sync;
+#define STORE_SYNC(dest, fsrc)				\
+	EX_ST_FP(STORE_BLK(%fsrc, %dest), U1_gs_80_fp);	\
+	add			%dest, 0x40, %dest;	\
+	DO_SYNC
+
+#define STORE_JUMP(dest, fsrc, target)			\
+	EX_ST_FP(STORE_BLK(%fsrc, %dest), U1_gs_40_fp);	\
+	add			%dest, 0x40, %dest;	\
+	ba,pt			%xcc, target;		\
+	 nop;
+
+#define FINISH_VISCHUNK(dest, f0, f1)			\
+	subcc			%g3, 8, %g3;		\
+	bl,pn			%xcc, 95f;		\
+	 faligndata		%f0, %f1, %f48;		\
+	EX_ST_FP(STORE(std, %f48, %dest), U1_g3_8_fp);	\
+	add			%dest, 8, %dest;
+
+#define UNEVEN_VISCHUNK_LAST(dest, f0, f1)	\
+	subcc			%g3, 8, %g3;	\
+	bl,pn			%xcc, 95f;	\
+	 fsrc2			%f0, %f1;
+
+#define UNEVEN_VISCHUNK(dest, f0, f1)		\
+	UNEVEN_VISCHUNK_LAST(dest, f0, f1)	\
+	ba,a,pt			%xcc, 93f;
+
+	.register	%g2,#scratch
+	.register	%g3,#scratch
+
+	.text
+#ifndef EX_RETVAL
+#define EX_RETVAL(x)	x
+ENTRY(U1_g1_1_fp)
+	VISExitHalf
+	add		%g1, 1, %g1
+	add		%g1, %g2, %g1
+	retl
+	 add		%g1, %o2, %o0
+ENDPROC(U1_g1_1_fp)
+ENTRY(U1_g2_0_fp)
+	VISExitHalf
+	retl
+	 add		%g2, %o2, %o0
+ENDPROC(U1_g2_0_fp)
+ENTRY(U1_g2_8_fp)
+	VISExitHalf
+	add		%g2, 8, %g2
+	retl
+	 add		%g2, %o2, %o0
+ENDPROC(U1_g2_8_fp)
+ENTRY(U1_gs_0_fp)
+	VISExitHalf
+	add		%GLOBAL_SPARE, %g3, %o0
+	retl
+	 add		%o0, %o2, %o0
+ENDPROC(U1_gs_0_fp)
+ENTRY(U1_gs_80_fp)
+	VISExitHalf
+	add		%GLOBAL_SPARE, 0x80, %GLOBAL_SPARE
+	add		%GLOBAL_SPARE, %g3, %o0
+	retl
+	 add		%o0, %o2, %o0
+ENDPROC(U1_gs_80_fp)
+ENTRY(U1_gs_40_fp)
+	VISExitHalf
+	add		%GLOBAL_SPARE, 0x40, %GLOBAL_SPARE
+	add		%GLOBAL_SPARE, %g3, %o0
+	retl
+	 add		%o0, %o2, %o0
+ENDPROC(U1_gs_40_fp)
+ENTRY(U1_g3_0_fp)
+	VISExitHalf
+	retl
+	 add		%g3, %o2, %o0
+ENDPROC(U1_g3_0_fp)
+ENTRY(U1_g3_8_fp)
+	VISExitHalf
+	add		%g3, 8, %g3
+	retl
+	 add		%g3, %o2, %o0
+ENDPROC(U1_g3_8_fp)
+ENTRY(U1_o2_0_fp)
+	VISExitHalf
+	retl
+	 mov		%o2, %o0
+ENDPROC(U1_o2_0_fp)
+ENTRY(U1_o2_1_fp)
+	VISExitHalf
+	retl
+	 add		%o2, 1, %o0
+ENDPROC(U1_o2_1_fp)
+ENTRY(U1_gs_0)
+	VISExitHalf
+	retl
+	 add		%GLOBAL_SPARE, %o2, %o0
+ENDPROC(U1_gs_0)
+ENTRY(U1_gs_8)
+	VISExitHalf
+	add		%GLOBAL_SPARE, %o2, %GLOBAL_SPARE
+	retl
+	 add		%GLOBAL_SPARE, 0x8, %o0
+ENDPROC(U1_gs_8)
+ENTRY(U1_gs_10)
+	VISExitHalf
+	add		%GLOBAL_SPARE, %o2, %GLOBAL_SPARE
+	retl
+	 add		%GLOBAL_SPARE, 0x10, %o0
+ENDPROC(U1_gs_10)
+ENTRY(U1_o2_0)
+	retl
+	 mov		%o2, %o0
+ENDPROC(U1_o2_0)
+ENTRY(U1_o2_8)
+	retl
+	 add		%o2, 8, %o0
+ENDPROC(U1_o2_8)
+ENTRY(U1_o2_4)
+	retl
+	 add		%o2, 4, %o0
+ENDPROC(U1_o2_4)
+ENTRY(U1_o2_1)
+	retl
+	 add		%o2, 1, %o0
+ENDPROC(U1_o2_1)
+ENTRY(U1_g1_0)
+	retl
+	 add		%g1, %o2, %o0
+ENDPROC(U1_g1_0)
+ENTRY(U1_g1_1)
+	add		%g1, 1, %g1
+	retl
+	 add		%g1, %o2, %o0
+ENDPROC(U1_g1_1)
+ENTRY(U1_gs_0_o2_adj)
+	and		%o2, 7, %o2
+	retl
+	 add		%GLOBAL_SPARE, %o2, %o0
+ENDPROC(U1_gs_0_o2_adj)
+ENTRY(U1_gs_8_o2_adj)
+	and		%o2, 7, %o2
+	add		%GLOBAL_SPARE, 8, %GLOBAL_SPARE
+	retl
+	 add		%GLOBAL_SPARE, %o2, %o0
+ENDPROC(U1_gs_8_o2_adj)
+#endif
+
+	.align		64
+
+	.globl		FUNC_NAME
+	.type		FUNC_NAME,#function
+FUNC_NAME:		/* %o0=dst, %o1=src, %o2=len */
+	srlx		%o2, 31, %g2
+	cmp		%g2, 0
+	tne		%xcc, 5
+	PREAMBLE
+	mov		%o0, %o4
+	cmp		%o2, 0
+	be,pn		%XCC, 85f
+	 or		%o0, %o1, %o3
+	cmp		%o2, 16
+	blu,a,pn	%XCC, 80f
+	 or		%o3, %o2, %o3
+
+	cmp		%o2, (5 * 64)
+	blu,pt		%XCC, 70f
+	 andcc		%o3, 0x7, %g0
+
+	/* Clobbers o5/g1/g2/g3/g7/icc/xcc.  */
+	VISEntry
+
+	/* Is 'dst' already aligned on an 64-byte boundary? */
+	andcc		%o0, 0x3f, %g2
+	be,pt		%XCC, 2f
+
+	/* Compute abs((dst & 0x3f) - 0x40) into %g2.  This is the number
+	 * of bytes to copy to make 'dst' 64-byte aligned.  We pre-
+	 * subtract this from 'len'.
+	 */
+	 sub		%o0, %o1, %GLOBAL_SPARE
+	sub		%g2, 0x40, %g2
+	sub		%g0, %g2, %g2
+	sub		%o2, %g2, %o2
+	andcc		%g2, 0x7, %g1
+	be,pt		%icc, 2f
+	 and		%g2, 0x38, %g2
+
+1:	subcc		%g1, 0x1, %g1
+	EX_LD_FP(LOAD(ldub, %o1 + 0x00, %o3), U1_g1_1_fp)
+	EX_ST_FP(STORE(stb, %o3, %o1 + %GLOBAL_SPARE), U1_g1_1_fp)
+	bgu,pt		%XCC, 1b
+	 add		%o1, 0x1, %o1
+
+	add		%o1, %GLOBAL_SPARE, %o0
+
+2:	cmp		%g2, 0x0
+	and		%o1, 0x7, %g1
+	be,pt		%icc, 3f
+	 alignaddr	%o1, %g0, %o1
+
+	EX_LD_FP(LOAD(ldd, %o1, %f4), U1_g2_0_fp)
+1:	EX_LD_FP(LOAD(ldd, %o1 + 0x8, %f6), U1_g2_0_fp)
+	add		%o1, 0x8, %o1
+	subcc		%g2, 0x8, %g2
+	faligndata	%f4, %f6, %f0
+	EX_ST_FP(STORE(std, %f0, %o0), U1_g2_8_fp)
+	be,pn		%icc, 3f
+	 add		%o0, 0x8, %o0
+
+	EX_LD_FP(LOAD(ldd, %o1 + 0x8, %f4), U1_g2_0_fp)
+	add		%o1, 0x8, %o1
+	subcc		%g2, 0x8, %g2
+	faligndata	%f6, %f4, %f0
+	EX_ST_FP(STORE(std, %f0, %o0), U1_g2_8_fp)
+	bne,pt		%icc, 1b
+	 add		%o0, 0x8, %o0
+
+	/* Destination is 64-byte aligned.  */
+3:	
+	membar		  #LoadStore | #StoreStore | #StoreLoad
+
+	subcc		%o2, 0x40, %GLOBAL_SPARE
+	add		%o1, %g1, %g1
+	andncc		%GLOBAL_SPARE, (0x40 - 1), %GLOBAL_SPARE
+	srl		%g1, 3, %g2
+	sub		%o2, %GLOBAL_SPARE, %g3
+	andn		%o1, (0x40 - 1), %o1
+	and		%g2, 7, %g2
+	andncc		%g3, 0x7, %g3
+	fsrc2		%f0, %f2
+	sub		%g3, 0x8, %g3
+	sub		%o2, %GLOBAL_SPARE, %o2
+
+	add		%g1, %GLOBAL_SPARE, %g1
+	subcc		%o2, %g3, %o2
+
+	EX_LD_FP(LOAD_BLK(%o1, %f0), U1_gs_0_fp)
+	add		%o1, 0x40, %o1
+	add		%g1, %g3, %g1
+	EX_LD_FP(LOAD_BLK(%o1, %f16), U1_gs_0_fp)
+	add		%o1, 0x40, %o1
+	sub		%GLOBAL_SPARE, 0x80, %GLOBAL_SPARE
+	EX_LD_FP(LOAD_BLK(%o1, %f32), U1_gs_80_fp)
+	add		%o1, 0x40, %o1
+
+	/* There are 8 instances of the unrolled loop,
+	 * one for each possible alignment of the
+	 * source buffer.  Each loop instance is 452
+	 * bytes.
+	 */
+	sll		%g2, 3, %o3
+	sub		%o3, %g2, %o3
+	sllx		%o3, 4, %o3
+	add		%o3, %g2, %o3
+	sllx		%o3, 2, %g2
+1:	rd		%pc, %o3
+	add		%o3, %lo(1f - 1b), %o3
+	jmpl		%o3 + %g2, %g0
+	 nop
+
+	.align		64
+1:	FREG_FROB(f0, f2, f4, f6, f8, f10,f12,f14,f16)
+	LOOP_CHUNK1(o1, o0, 1f)
+	FREG_FROB(f16,f18,f20,f22,f24,f26,f28,f30,f32)
+	LOOP_CHUNK2(o1, o0, 2f)
+	FREG_FROB(f32,f34,f36,f38,f40,f42,f44,f46,f0)
+	LOOP_CHUNK3(o1, o0, 3f)
+	ba,pt		%xcc, 1b+4
+	 faligndata	%f0, %f2, %f48
+1:	FREG_FROB(f16,f18,f20,f22,f24,f26,f28,f30,f32)
+	STORE_SYNC(o0, f48)
+	FREG_FROB(f32,f34,f36,f38,f40,f42,f44,f46,f0)
+	STORE_JUMP(o0, f48, 40f)
+2:	FREG_FROB(f32,f34,f36,f38,f40,f42,f44,f46,f0)
+	STORE_SYNC(o0, f48)
+	FREG_FROB(f0, f2, f4, f6, f8, f10,f12,f14,f16)
+	STORE_JUMP(o0, f48, 48f)
+3:	FREG_FROB(f0, f2, f4, f6, f8, f10,f12,f14,f16)
+	STORE_SYNC(o0, f48)
+	FREG_FROB(f16,f18,f20,f22,f24,f26,f28,f30,f32)
+	STORE_JUMP(o0, f48, 56f)
+
+1:	FREG_FROB(f2, f4, f6, f8, f10,f12,f14,f16,f18)
+	LOOP_CHUNK1(o1, o0, 1f)
+	FREG_FROB(f18,f20,f22,f24,f26,f28,f30,f32,f34)
+	LOOP_CHUNK2(o1, o0, 2f)
+	FREG_FROB(f34,f36,f38,f40,f42,f44,f46,f0, f2)
+	LOOP_CHUNK3(o1, o0, 3f)
+	ba,pt		%xcc, 1b+4
+	 faligndata	%f2, %f4, %f48
+1:	FREG_FROB(f18,f20,f22,f24,f26,f28,f30,f32,f34)
+	STORE_SYNC(o0, f48)
+	FREG_FROB(f34,f36,f38,f40,f42,f44,f46,f0, f2)
+	STORE_JUMP(o0, f48, 41f)
+2:	FREG_FROB(f34,f36,f38,f40,f42,f44,f46,f0, f2)
+	STORE_SYNC(o0, f48)
+	FREG_FROB(f2, f4, f6, f8, f10,f12,f14,f16,f18)
+	STORE_JUMP(o0, f48, 49f)
+3:	FREG_FROB(f2, f4, f6, f8, f10,f12,f14,f16,f18)
+	STORE_SYNC(o0, f48)
+	FREG_FROB(f18,f20,f22,f24,f26,f28,f30,f32,f34)
+	STORE_JUMP(o0, f48, 57f)
+
+1:	FREG_FROB(f4, f6, f8, f10,f12,f14,f16,f18,f20)
+	LOOP_CHUNK1(o1, o0, 1f)
+	FREG_FROB(f20,f22,f24,f26,f28,f30,f32,f34,f36)
+	LOOP_CHUNK2(o1, o0, 2f)
+	FREG_FROB(f36,f38,f40,f42,f44,f46,f0, f2, f4)
+	LOOP_CHUNK3(o1, o0, 3f)
+	ba,pt		%xcc, 1b+4
+	 faligndata	%f4, %f6, %f48
+1:	FREG_FROB(f20,f22,f24,f26,f28,f30,f32,f34,f36)
+	STORE_SYNC(o0, f48)
+	FREG_FROB(f36,f38,f40,f42,f44,f46,f0, f2, f4)
+	STORE_JUMP(o0, f48, 42f)
+2:	FREG_FROB(f36,f38,f40,f42,f44,f46,f0, f2, f4)
+	STORE_SYNC(o0, f48)
+	FREG_FROB(f4, f6, f8, f10,f12,f14,f16,f18,f20)
+	STORE_JUMP(o0, f48, 50f)
+3:	FREG_FROB(f4, f6, f8, f10,f12,f14,f16,f18,f20)
+	STORE_SYNC(o0, f48)
+	FREG_FROB(f20,f22,f24,f26,f28,f30,f32,f34,f36)
+	STORE_JUMP(o0, f48, 58f)
+
+1:	FREG_FROB(f6, f8, f10,f12,f14,f16,f18,f20,f22)
+	LOOP_CHUNK1(o1, o0, 1f)
+	FREG_FROB(f22,f24,f26,f28,f30,f32,f34,f36,f38)
+	LOOP_CHUNK2(o1, o0, 2f)
+	FREG_FROB(f38,f40,f42,f44,f46,f0, f2, f4, f6) 
+	LOOP_CHUNK3(o1, o0, 3f)
+	ba,pt		%xcc, 1b+4
+	 faligndata	%f6, %f8, %f48
+1:	FREG_FROB(f22,f24,f26,f28,f30,f32,f34,f36,f38)
+	STORE_SYNC(o0, f48)
+	FREG_FROB(f38,f40,f42,f44,f46,f0, f2, f4, f6)
+	STORE_JUMP(o0, f48, 43f)
+2:	FREG_FROB(f38,f40,f42,f44,f46,f0, f2, f4, f6)
+	STORE_SYNC(o0, f48)
+	FREG_FROB(f6, f8, f10,f12,f14,f16,f18,f20,f22)
+	STORE_JUMP(o0, f48, 51f)
+3:	FREG_FROB(f6, f8, f10,f12,f14,f16,f18,f20,f22)
+	STORE_SYNC(o0, f48)
+	FREG_FROB(f22,f24,f26,f28,f30,f32,f34,f36,f38)
+	STORE_JUMP(o0, f48, 59f)
+
+1:	FREG_FROB(f8, f10,f12,f14,f16,f18,f20,f22,f24)
+	LOOP_CHUNK1(o1, o0, 1f)
+	FREG_FROB(f24,f26,f28,f30,f32,f34,f36,f38,f40)
+	LOOP_CHUNK2(o1, o0, 2f)
+	FREG_FROB(f40,f42,f44,f46,f0, f2, f4, f6, f8)
+	LOOP_CHUNK3(o1, o0, 3f)
+	ba,pt		%xcc, 1b+4
+	 faligndata	%f8, %f10, %f48
+1:	FREG_FROB(f24,f26,f28,f30,f32,f34,f36,f38,f40)
+	STORE_SYNC(o0, f48)
+	FREG_FROB(f40,f42,f44,f46,f0, f2, f4, f6, f8)
+	STORE_JUMP(o0, f48, 44f)
+2:	FREG_FROB(f40,f42,f44,f46,f0, f2, f4, f6, f8)
+	STORE_SYNC(o0, f48)
+	FREG_FROB(f8, f10,f12,f14,f16,f18,f20,f22,f24)
+	STORE_JUMP(o0, f48, 52f)
+3:	FREG_FROB(f8, f10,f12,f14,f16,f18,f20,f22,f24)
+	STORE_SYNC(o0, f48)
+	FREG_FROB(f24,f26,f28,f30,f32,f34,f36,f38,f40)
+	STORE_JUMP(o0, f48, 60f)
+
+1:	FREG_FROB(f10,f12,f14,f16,f18,f20,f22,f24,f26)
+	LOOP_CHUNK1(o1, o0, 1f)
+	FREG_FROB(f26,f28,f30,f32,f34,f36,f38,f40,f42)
+	LOOP_CHUNK2(o1, o0, 2f)
+	FREG_FROB(f42,f44,f46,f0, f2, f4, f6, f8, f10)
+	LOOP_CHUNK3(o1, o0, 3f)
+	ba,pt		%xcc, 1b+4
+	 faligndata	%f10, %f12, %f48
+1:	FREG_FROB(f26,f28,f30,f32,f34,f36,f38,f40,f42)
+	STORE_SYNC(o0, f48)
+	FREG_FROB(f42,f44,f46,f0, f2, f4, f6, f8, f10)
+	STORE_JUMP(o0, f48, 45f)
+2:	FREG_FROB(f42,f44,f46,f0, f2, f4, f6, f8, f10)
+	STORE_SYNC(o0, f48)
+	FREG_FROB(f10,f12,f14,f16,f18,f20,f22,f24,f26)
+	STORE_JUMP(o0, f48, 53f)
+3:	FREG_FROB(f10,f12,f14,f16,f18,f20,f22,f24,f26)
+	STORE_SYNC(o0, f48)
+	FREG_FROB(f26,f28,f30,f32,f34,f36,f38,f40,f42)
+	STORE_JUMP(o0, f48, 61f)
+
+1:	FREG_FROB(f12,f14,f16,f18,f20,f22,f24,f26,f28)
+	LOOP_CHUNK1(o1, o0, 1f)
+	FREG_FROB(f28,f30,f32,f34,f36,f38,f40,f42,f44)
+	LOOP_CHUNK2(o1, o0, 2f)
+	FREG_FROB(f44,f46,f0, f2, f4, f6, f8, f10,f12)
+	LOOP_CHUNK3(o1, o0, 3f)
+	ba,pt		%xcc, 1b+4
+	 faligndata	%f12, %f14, %f48
+1:	FREG_FROB(f28,f30,f32,f34,f36,f38,f40,f42,f44)
+	STORE_SYNC(o0, f48)
+	FREG_FROB(f44,f46,f0, f2, f4, f6, f8, f10,f12)
+	STORE_JUMP(o0, f48, 46f)
+2:	FREG_FROB(f44,f46,f0, f2, f4, f6, f8, f10,f12)
+	STORE_SYNC(o0, f48)
+	FREG_FROB(f12,f14,f16,f18,f20,f22,f24,f26,f28)
+	STORE_JUMP(o0, f48, 54f)
+3:	FREG_FROB(f12,f14,f16,f18,f20,f22,f24,f26,f28)
+	STORE_SYNC(o0, f48)
+	FREG_FROB(f28,f30,f32,f34,f36,f38,f40,f42,f44)
+	STORE_JUMP(o0, f48, 62f)
+
+1:	FREG_FROB(f14,f16,f18,f20,f22,f24,f26,f28,f30)
+	LOOP_CHUNK1(o1, o0, 1f)
+	FREG_FROB(f30,f32,f34,f36,f38,f40,f42,f44,f46)
+	LOOP_CHUNK2(o1, o0, 2f)
+	FREG_FROB(f46,f0, f2, f4, f6, f8, f10,f12,f14)
+	LOOP_CHUNK3(o1, o0, 3f)
+	ba,pt		%xcc, 1b+4
+	 faligndata	%f14, %f16, %f48
+1:	FREG_FROB(f30,f32,f34,f36,f38,f40,f42,f44,f46)
+	STORE_SYNC(o0, f48)
+	FREG_FROB(f46,f0, f2, f4, f6, f8, f10,f12,f14)
+	STORE_JUMP(o0, f48, 47f)
+2:	FREG_FROB(f46,f0, f2, f4, f6, f8, f10,f12,f14)
+	STORE_SYNC(o0, f48)
+	FREG_FROB(f14,f16,f18,f20,f22,f24,f26,f28,f30)
+	STORE_JUMP(o0, f48, 55f)
+3:	FREG_FROB(f14,f16,f18,f20,f22,f24,f26,f28,f30)
+	STORE_SYNC(o0, f48)
+	FREG_FROB(f30,f32,f34,f36,f38,f40,f42,f44,f46)
+	STORE_JUMP(o0, f48, 63f)
+
+40:	FINISH_VISCHUNK(o0, f0,  f2)
+41:	FINISH_VISCHUNK(o0, f2,  f4)
+42:	FINISH_VISCHUNK(o0, f4,  f6)
+43:	FINISH_VISCHUNK(o0, f6,  f8)
+44:	FINISH_VISCHUNK(o0, f8,  f10)
+45:	FINISH_VISCHUNK(o0, f10, f12)
+46:	FINISH_VISCHUNK(o0, f12, f14)
+47:	UNEVEN_VISCHUNK(o0, f14, f0)
+48:	FINISH_VISCHUNK(o0, f16, f18)
+49:	FINISH_VISCHUNK(o0, f18, f20)
+50:	FINISH_VISCHUNK(o0, f20, f22)
+51:	FINISH_VISCHUNK(o0, f22, f24)
+52:	FINISH_VISCHUNK(o0, f24, f26)
+53:	FINISH_VISCHUNK(o0, f26, f28)
+54:	FINISH_VISCHUNK(o0, f28, f30)
+55:	UNEVEN_VISCHUNK(o0, f30, f0)
+56:	FINISH_VISCHUNK(o0, f32, f34)
+57:	FINISH_VISCHUNK(o0, f34, f36)
+58:	FINISH_VISCHUNK(o0, f36, f38)
+59:	FINISH_VISCHUNK(o0, f38, f40)
+60:	FINISH_VISCHUNK(o0, f40, f42)
+61:	FINISH_VISCHUNK(o0, f42, f44)
+62:	FINISH_VISCHUNK(o0, f44, f46)
+63:	UNEVEN_VISCHUNK_LAST(o0, f46, f0)
+
+93:	EX_LD_FP(LOAD(ldd, %o1, %f2), U1_g3_0_fp)
+	add		%o1, 8, %o1
+	subcc		%g3, 8, %g3
+	faligndata	%f0, %f2, %f8
+	EX_ST_FP(STORE(std, %f8, %o0), U1_g3_8_fp)
+	bl,pn		%xcc, 95f
+	 add		%o0, 8, %o0
+	EX_LD_FP(LOAD(ldd, %o1, %f0), U1_g3_0_fp)
+	add		%o1, 8, %o1
+	subcc		%g3, 8, %g3
+	faligndata	%f2, %f0, %f8
+	EX_ST_FP(STORE(std, %f8, %o0), U1_g3_8_fp)
+	bge,pt		%xcc, 93b
+	 add		%o0, 8, %o0
+
+95:	brz,pt		%o2, 2f
+	 mov		%g1, %o1
+
+1:	EX_LD_FP(LOAD(ldub, %o1, %o3), U1_o2_0_fp)
+	add		%o1, 1, %o1
+	subcc		%o2, 1, %o2
+	EX_ST_FP(STORE(stb, %o3, %o0), U1_o2_1_fp)
+	bne,pt		%xcc, 1b
+	 add		%o0, 1, %o0
+
+2:	membar		#StoreLoad | #StoreStore
+	VISExit
+	retl
+	 mov		EX_RETVAL(%o4), %o0
+
+	.align		64
+70:	/* 16 < len <= (5 * 64) */
+	bne,pn		%XCC, 75f
+	 sub		%o0, %o1, %o3
+
+72:	andn		%o2, 0xf, %GLOBAL_SPARE
+	and		%o2, 0xf, %o2
+1:	EX_LD(LOAD(ldx, %o1 + 0x00, %o5), U1_gs_0)
+	EX_LD(LOAD(ldx, %o1 + 0x08, %g1), U1_gs_0)
+	subcc		%GLOBAL_SPARE, 0x10, %GLOBAL_SPARE
+	EX_ST(STORE(stx, %o5, %o1 + %o3), U1_gs_10)
+	add		%o1, 0x8, %o1
+	EX_ST(STORE(stx, %g1, %o1 + %o3), U1_gs_8)
+	bgu,pt		%XCC, 1b
+	 add		%o1, 0x8, %o1
+73:	andcc		%o2, 0x8, %g0
+	be,pt		%XCC, 1f
+	 nop
+	EX_LD(LOAD(ldx, %o1, %o5), U1_o2_0)
+	sub		%o2, 0x8, %o2
+	EX_ST(STORE(stx, %o5, %o1 + %o3), U1_o2_8)
+	add		%o1, 0x8, %o1
+1:	andcc		%o2, 0x4, %g0
+	be,pt		%XCC, 1f
+	 nop
+	EX_LD(LOAD(lduw, %o1, %o5), U1_o2_0)
+	sub		%o2, 0x4, %o2
+	EX_ST(STORE(stw, %o5, %o1 + %o3), U1_o2_4)
+	add		%o1, 0x4, %o1
+1:	cmp		%o2, 0
+	be,pt		%XCC, 85f
+	 nop
+	ba,pt		%xcc, 90f
+	 nop
+
+75:	andcc		%o0, 0x7, %g1
+	sub		%g1, 0x8, %g1
+	be,pn		%icc, 2f
+	 sub		%g0, %g1, %g1
+	sub		%o2, %g1, %o2
+
+1:	EX_LD(LOAD(ldub, %o1, %o5), U1_g1_0)
+	subcc		%g1, 1, %g1
+	EX_ST(STORE(stb, %o5, %o1 + %o3), U1_g1_1)
+	bgu,pt		%icc, 1b
+	 add		%o1, 1, %o1
+
+2:	add		%o1, %o3, %o0
+	andcc		%o1, 0x7, %g1
+	bne,pt		%icc, 8f
+	 sll		%g1, 3, %g1
+
+	cmp		%o2, 16
+	bgeu,pt		%icc, 72b
+	 nop
+	ba,a,pt		%xcc, 73b
+
+8:	mov		64, %o3
+	andn		%o1, 0x7, %o1
+	EX_LD(LOAD(ldx, %o1, %g2), U1_o2_0)
+	sub		%o3, %g1, %o3
+	andn		%o2, 0x7, %GLOBAL_SPARE
+	sllx		%g2, %g1, %g2
+1:	EX_LD(LOAD(ldx, %o1 + 0x8, %g3), U1_gs_0_o2_adj)
+	subcc		%GLOBAL_SPARE, 0x8, %GLOBAL_SPARE
+	add		%o1, 0x8, %o1
+	srlx		%g3, %o3, %o5
+	or		%o5, %g2, %o5
+	EX_ST(STORE(stx, %o5, %o0), U1_gs_8_o2_adj)
+	add		%o0, 0x8, %o0
+	bgu,pt		%icc, 1b
+	 sllx		%g3, %g1, %g2
+
+	srl		%g1, 3, %g1
+	andcc		%o2, 0x7, %o2
+	be,pn		%icc, 85f
+	 add		%o1, %g1, %o1
+	ba,pt		%xcc, 90f
+	 sub		%o0, %o1, %o3
+
+	.align		64
+80:	/* 0 < len <= 16 */
+	andcc		%o3, 0x3, %g0
+	bne,pn		%XCC, 90f
+	 sub		%o0, %o1, %o3
+
+1:	EX_LD(LOAD(lduw, %o1, %g1), U1_o2_0)
+	subcc		%o2, 4, %o2
+	EX_ST(STORE(stw, %g1, %o1 + %o3), U1_o2_4)
+	bgu,pt		%XCC, 1b
+	 add		%o1, 4, %o1
+
+85:	retl
+	 mov		EX_RETVAL(%o4), %o0
+
+	.align		32
+90:	EX_LD(LOAD(ldub, %o1, %g1), U1_o2_0)
+	subcc		%o2, 1, %o2
+	EX_ST(STORE(stb, %g1, %o1 + %o3), U1_o2_1)
+	bgu,pt		%XCC, 90b
+	 add		%o1, 1, %o1
+	retl
+	 mov		EX_RETVAL(%o4), %o0
+
+	.size		FUNC_NAME, .-FUNC_NAME
+EXPORT_SYMBOL(FUNC_NAME)
diff --git a/arch/sparc/lib/U3copy_from_user.S b/arch/sparc/lib/U3copy_from_user.S
new file mode 100644
index 000000000..9c891e9ed
--- /dev/null
+++ b/arch/sparc/lib/U3copy_from_user.S
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* U3copy_from_user.S: UltraSparc-III optimized copy from userspace.
+ *
+ * Copyright (C) 1999, 2000, 2004 David S. Miller (davem@redhat.com)
+ */
+
+#define EX_LD(x,y)		\
+98:	x;			\
+	.section __ex_table,"a";\
+	.align 4;		\
+	.word 98b, y;		\
+	.text;			\
+	.align 4;
+
+#define EX_LD_FP(x,y)		\
+98:	x;			\
+	.section __ex_table,"a";\
+	.align 4;		\
+	.word 98b, y##_fp;	\
+	.text;			\
+	.align 4;
+
+#define FUNC_NAME		U3copy_from_user
+#define LOAD(type,addr,dest)	type##a [addr] %asi, dest
+#define EX_RETVAL(x)		0
+
+#include "U3memcpy.S"
diff --git a/arch/sparc/lib/U3copy_to_user.S b/arch/sparc/lib/U3copy_to_user.S
new file mode 100644
index 000000000..da4246082
--- /dev/null
+++ b/arch/sparc/lib/U3copy_to_user.S
@@ -0,0 +1,38 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* U3copy_to_user.S: UltraSparc-III optimized copy to userspace.
+ *
+ * Copyright (C) 1999, 2000, 2004 David S. Miller (davem@redhat.com)
+ */
+
+#define EX_ST(x,y)		\
+98:	x;			\
+	.section __ex_table,"a";\
+	.align 4;		\
+	.word 98b, y;		\
+	.text;			\
+	.align 4;
+
+#define EX_ST_FP(x,y)		\
+98:	x;			\
+	.section __ex_table,"a";\
+	.align 4;		\
+	.word 98b, y##_fp;	\
+	.text;			\
+	.align 4;
+
+#define FUNC_NAME		U3copy_to_user
+#define STORE(type,src,addr)	type##a src, [addr] ASI_AIUS
+#define STORE_BLK(src,addr)	stda src, [addr] ASI_BLK_AIUS
+#define EX_RETVAL(x)		0
+
+	/* 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;						\
+
+#include "U3memcpy.S"
diff --git a/arch/sparc/lib/U3memcpy.S b/arch/sparc/lib/U3memcpy.S
new file mode 100644
index 000000000..9248d59c7
--- /dev/null
+++ b/arch/sparc/lib/U3memcpy.S
@@ -0,0 +1,520 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* U3memcpy.S: UltraSparc-III optimized memcpy.
+ *
+ * Copyright (C) 1999, 2000, 2004 David S. Miller (davem@redhat.com)
+ */
+
+#ifdef __KERNEL__
+#include <linux/linkage.h>
+#include <asm/visasm.h>
+#include <asm/asi.h>
+#define GLOBAL_SPARE	%g7
+#else
+#define ASI_BLK_P 0xf0
+#define FPRS_FEF  0x04
+#ifdef MEMCPY_DEBUG
+#define VISEntryHalf rd %fprs, %o5; wr %g0, FPRS_FEF, %fprs; \
+		     clr %g1; clr %g2; clr %g3; subcc %g0, %g0, %g0;
+#define VISExitHalf and %o5, FPRS_FEF, %o5; wr %o5, 0x0, %fprs
+#else
+#define VISEntryHalf rd %fprs, %o5; wr %g0, FPRS_FEF, %fprs
+#define VISExitHalf and %o5, FPRS_FEF, %o5; wr %o5, 0x0, %fprs
+#endif
+#define GLOBAL_SPARE	%g5
+#endif
+
+#ifndef EX_LD
+#define EX_LD(x,y)	x
+#endif
+#ifndef EX_LD_FP
+#define EX_LD_FP(x,y)	x
+#endif
+
+#ifndef EX_ST
+#define EX_ST(x,y)	x
+#endif
+#ifndef EX_ST_FP
+#define EX_ST_FP(x,y)	x
+#endif
+
+#ifndef LOAD
+#define LOAD(type,addr,dest)	type [addr], dest
+#endif
+
+#ifndef STORE
+#define STORE(type,src,addr)	type src, [addr]
+#endif
+
+#ifndef STORE_BLK
+#define STORE_BLK(src,addr)	stda src, [addr] ASI_BLK_P
+#endif
+
+#ifndef FUNC_NAME
+#define FUNC_NAME	U3memcpy
+#endif
+
+#ifndef PREAMBLE
+#define PREAMBLE
+#endif
+
+#ifndef XCC
+#define XCC xcc
+#endif
+
+	.register	%g2,#scratch
+	.register	%g3,#scratch
+
+	/* Special/non-trivial issues of this code:
+	 *
+	 * 1) %o5 is preserved from VISEntryHalf to VISExitHalf
+	 * 2) Only low 32 FPU registers are used so that only the
+	 *    lower half of the FPU register set is dirtied by this
+	 *    code.  This is especially important in the kernel.
+	 * 3) This code never prefetches cachelines past the end
+	 *    of the source buffer.
+	 */
+
+	.text
+#ifndef EX_RETVAL
+#define EX_RETVAL(x)	x
+__restore_fp:
+	VISExitHalf
+	retl
+	 nop
+ENTRY(U3_retl_o2_plus_g2_plus_g1_plus_1_fp)
+	add	%g1, 1, %g1
+	add	%g2, %g1, %g2
+	ba,pt	%xcc, __restore_fp
+	 add	%o2, %g2, %o0
+ENDPROC(U3_retl_o2_plus_g2_plus_g1_plus_1_fp)
+ENTRY(U3_retl_o2_plus_g2_fp)
+	ba,pt	%xcc, __restore_fp
+	 add	%o2, %g2, %o0
+ENDPROC(U3_retl_o2_plus_g2_fp)
+ENTRY(U3_retl_o2_plus_g2_plus_8_fp)
+	add	%g2, 8, %g2
+	ba,pt	%xcc, __restore_fp
+	 add	%o2, %g2, %o0
+ENDPROC(U3_retl_o2_plus_g2_plus_8_fp)
+ENTRY(U3_retl_o2)
+	retl
+	 mov	%o2, %o0
+ENDPROC(U3_retl_o2)
+ENTRY(U3_retl_o2_plus_1)
+	retl
+	 add	%o2, 1, %o0
+ENDPROC(U3_retl_o2_plus_1)
+ENTRY(U3_retl_o2_plus_4)
+	retl
+	 add	%o2, 4, %o0
+ENDPROC(U3_retl_o2_plus_4)
+ENTRY(U3_retl_o2_plus_8)
+	retl
+	 add	%o2, 8, %o0
+ENDPROC(U3_retl_o2_plus_8)
+ENTRY(U3_retl_o2_plus_g1_plus_1)
+	add	%g1, 1, %g1
+	retl
+	 add	%o2, %g1, %o0
+ENDPROC(U3_retl_o2_plus_g1_plus_1)
+ENTRY(U3_retl_o2_fp)
+	ba,pt	%xcc, __restore_fp
+	 mov	%o2, %o0
+ENDPROC(U3_retl_o2_fp)
+ENTRY(U3_retl_o2_plus_o3_sll_6_plus_0x80_fp)
+	sll	%o3, 6, %o3
+	add	%o3, 0x80, %o3
+	ba,pt	%xcc, __restore_fp
+	 add	%o2, %o3, %o0
+ENDPROC(U3_retl_o2_plus_o3_sll_6_plus_0x80_fp)
+ENTRY(U3_retl_o2_plus_o3_sll_6_plus_0x40_fp)
+	sll	%o3, 6, %o3
+	add	%o3, 0x40, %o3
+	ba,pt	%xcc, __restore_fp
+	 add	%o2, %o3, %o0
+ENDPROC(U3_retl_o2_plus_o3_sll_6_plus_0x40_fp)
+ENTRY(U3_retl_o2_plus_GS_plus_0x10)
+	add	GLOBAL_SPARE, 0x10, GLOBAL_SPARE
+	retl
+	 add	%o2, GLOBAL_SPARE, %o0
+ENDPROC(U3_retl_o2_plus_GS_plus_0x10)
+ENTRY(U3_retl_o2_plus_GS_plus_0x08)
+	add	GLOBAL_SPARE, 0x08, GLOBAL_SPARE
+	retl
+	 add	%o2, GLOBAL_SPARE, %o0
+ENDPROC(U3_retl_o2_plus_GS_plus_0x08)
+ENTRY(U3_retl_o2_and_7_plus_GS)
+	and	%o2, 7, %o2
+	retl
+	 add	%o2, GLOBAL_SPARE, %o0
+ENDPROC(U3_retl_o2_and_7_plus_GS)
+ENTRY(U3_retl_o2_and_7_plus_GS_plus_8)
+	add	GLOBAL_SPARE, 8, GLOBAL_SPARE
+	and	%o2, 7, %o2
+	retl
+	 add	%o2, GLOBAL_SPARE, %o0
+ENDPROC(U3_retl_o2_and_7_plus_GS_plus_8)
+#endif
+
+	.align		64
+
+	/* The cheetah's flexible spine, oversized liver, enlarged heart,
+	 * slender muscular body, and claws make it the swiftest hunter
+	 * in Africa and the fastest animal on land.  Can reach speeds
+	 * of up to 2.4GB per second.
+	 */
+
+	.globl	FUNC_NAME
+	.type	FUNC_NAME,#function
+FUNC_NAME:	/* %o0=dst, %o1=src, %o2=len */
+	srlx		%o2, 31, %g2
+	cmp		%g2, 0
+
+	/* software trap 5 "Range Check" if dst >= 0x80000000 */
+	tne		%xcc, 5
+	PREAMBLE
+	mov		%o0, %o4
+
+	/* if len == 0 */
+	cmp		%o2, 0
+	be,pn		%XCC, end_return
+	 or		%o0, %o1, %o3
+
+	/* if len < 16 */
+	cmp		%o2, 16
+	blu,a,pn	%XCC, less_than_16
+	 or		%o3, %o2, %o3
+
+	/* if len < 192 */
+	cmp		%o2, (3 * 64)
+	blu,pt		%XCC, less_than_192
+	 andcc		%o3, 0x7, %g0
+
+	/* Clobbers o5/g1/g2/g3/g7/icc/xcc.  We must preserve
+	 * o5 from here until we hit VISExitHalf.
+	 */
+	VISEntryHalf
+
+	/* Is 'dst' already aligned on an 64-byte boundary? */
+	andcc		%o0, 0x3f, %g2
+	be,pt		%XCC, 2f
+
+	/* Compute abs((dst & 0x3f) - 0x40) into %g2.  This is the number
+	 * of bytes to copy to make 'dst' 64-byte aligned.  We pre-
+	 * subtract this from 'len'.
+	 */
+	 sub		%o0, %o1, GLOBAL_SPARE
+	sub		%g2, 0x40, %g2
+	sub		%g0, %g2, %g2
+	sub		%o2, %g2, %o2
+	andcc		%g2, 0x7, %g1
+	be,pt		%icc, 2f
+	 and		%g2, 0x38, %g2
+
+1:	subcc		%g1, 0x1, %g1
+	EX_LD_FP(LOAD(ldub, %o1 + 0x00, %o3), U3_retl_o2_plus_g2_plus_g1_plus_1)
+	EX_ST_FP(STORE(stb, %o3, %o1 + GLOBAL_SPARE), U3_retl_o2_plus_g2_plus_g1_plus_1)
+	bgu,pt		%XCC, 1b
+	 add		%o1, 0x1, %o1
+
+	add		%o1, GLOBAL_SPARE, %o0
+
+2:	cmp		%g2, 0x0
+	and		%o1, 0x7, %g1
+	be,pt		%icc, 3f
+	 alignaddr	%o1, %g0, %o1
+
+	EX_LD_FP(LOAD(ldd, %o1, %f4), U3_retl_o2_plus_g2)
+1:	EX_LD_FP(LOAD(ldd, %o1 + 0x8, %f6), U3_retl_o2_plus_g2)
+	add		%o1, 0x8, %o1
+	subcc		%g2, 0x8, %g2
+	faligndata	%f4, %f6, %f0
+	EX_ST_FP(STORE(std, %f0, %o0), U3_retl_o2_plus_g2_plus_8)
+	be,pn		%icc, 3f
+	 add		%o0, 0x8, %o0
+
+	EX_LD_FP(LOAD(ldd, %o1 + 0x8, %f4), U3_retl_o2_plus_g2)
+	add		%o1, 0x8, %o1
+	subcc		%g2, 0x8, %g2
+	faligndata	%f6, %f4, %f2
+	EX_ST_FP(STORE(std, %f2, %o0), U3_retl_o2_plus_g2_plus_8)
+	bne,pt		%icc, 1b
+	 add		%o0, 0x8, %o0
+
+3:	LOAD(prefetch, %o1 + 0x000, #one_read)
+	LOAD(prefetch, %o1 + 0x040, #one_read)
+	andn		%o2, (0x40 - 1), GLOBAL_SPARE
+	LOAD(prefetch, %o1 + 0x080, #one_read)
+	LOAD(prefetch, %o1 + 0x0c0, #one_read)
+	LOAD(prefetch, %o1 + 0x100, #one_read)
+	EX_LD_FP(LOAD(ldd, %o1 + 0x000, %f0), U3_retl_o2)
+	LOAD(prefetch, %o1 + 0x140, #one_read)
+	EX_LD_FP(LOAD(ldd, %o1 + 0x008, %f2), U3_retl_o2)
+	LOAD(prefetch, %o1 + 0x180, #one_read)
+	EX_LD_FP(LOAD(ldd, %o1 + 0x010, %f4), U3_retl_o2)
+	LOAD(prefetch, %o1 + 0x1c0, #one_read)
+	faligndata	%f0, %f2, %f16
+	EX_LD_FP(LOAD(ldd, %o1 + 0x018, %f6), U3_retl_o2)
+	faligndata	%f2, %f4, %f18
+	EX_LD_FP(LOAD(ldd, %o1 + 0x020, %f8), U3_retl_o2)
+	faligndata	%f4, %f6, %f20
+	EX_LD_FP(LOAD(ldd, %o1 + 0x028, %f10), U3_retl_o2)
+	faligndata	%f6, %f8, %f22
+
+	EX_LD_FP(LOAD(ldd, %o1 + 0x030, %f12), U3_retl_o2)
+	faligndata	%f8, %f10, %f24
+	EX_LD_FP(LOAD(ldd, %o1 + 0x038, %f14), U3_retl_o2)
+	faligndata	%f10, %f12, %f26
+	EX_LD_FP(LOAD(ldd, %o1 + 0x040, %f0), U3_retl_o2)
+
+	subcc		GLOBAL_SPARE, 0x80, GLOBAL_SPARE
+	add		%o1, 0x40, %o1
+	bgu,pt		%XCC, 1f
+	 srl		GLOBAL_SPARE, 6, %o3
+	ba,pt		%xcc, 2f
+	 nop
+
+	.align		64
+1:
+	EX_LD_FP(LOAD(ldd, %o1 + 0x008, %f2), U3_retl_o2_plus_o3_sll_6_plus_0x80)
+	faligndata	%f12, %f14, %f28
+	EX_LD_FP(LOAD(ldd, %o1 + 0x010, %f4), U3_retl_o2_plus_o3_sll_6_plus_0x80)
+	faligndata	%f14, %f0, %f30
+	EX_ST_FP(STORE_BLK(%f16, %o0), U3_retl_o2_plus_o3_sll_6_plus_0x80)
+	EX_LD_FP(LOAD(ldd, %o1 + 0x018, %f6), U3_retl_o2_plus_o3_sll_6_plus_0x40)
+	faligndata	%f0, %f2, %f16
+	add		%o0, 0x40, %o0
+
+	EX_LD_FP(LOAD(ldd, %o1 + 0x020, %f8), U3_retl_o2_plus_o3_sll_6_plus_0x40)
+	faligndata	%f2, %f4, %f18
+	EX_LD_FP(LOAD(ldd, %o1 + 0x028, %f10), U3_retl_o2_plus_o3_sll_6_plus_0x40)
+	faligndata	%f4, %f6, %f20
+	EX_LD_FP(LOAD(ldd, %o1 + 0x030, %f12), U3_retl_o2_plus_o3_sll_6_plus_0x40)
+	subcc		%o3, 0x01, %o3
+	faligndata	%f6, %f8, %f22
+	EX_LD_FP(LOAD(ldd, %o1 + 0x038, %f14), U3_retl_o2_plus_o3_sll_6_plus_0x80)
+
+	faligndata	%f8, %f10, %f24
+	EX_LD_FP(LOAD(ldd, %o1 + 0x040, %f0), U3_retl_o2_plus_o3_sll_6_plus_0x80)
+	LOAD(prefetch, %o1 + 0x1c0, #one_read)
+	faligndata	%f10, %f12, %f26
+	bg,pt		%XCC, 1b
+	 add		%o1, 0x40, %o1
+
+	/* Finally we copy the last full 64-byte block. */
+2:
+	EX_LD_FP(LOAD(ldd, %o1 + 0x008, %f2), U3_retl_o2_plus_o3_sll_6_plus_0x80)
+	faligndata	%f12, %f14, %f28
+	EX_LD_FP(LOAD(ldd, %o1 + 0x010, %f4), U3_retl_o2_plus_o3_sll_6_plus_0x80)
+	faligndata	%f14, %f0, %f30
+	EX_ST_FP(STORE_BLK(%f16, %o0), U3_retl_o2_plus_o3_sll_6_plus_0x80)
+	EX_LD_FP(LOAD(ldd, %o1 + 0x018, %f6), U3_retl_o2_plus_o3_sll_6_plus_0x40)
+	faligndata	%f0, %f2, %f16
+	EX_LD_FP(LOAD(ldd, %o1 + 0x020, %f8), U3_retl_o2_plus_o3_sll_6_plus_0x40)
+	faligndata	%f2, %f4, %f18
+	EX_LD_FP(LOAD(ldd, %o1 + 0x028, %f10), U3_retl_o2_plus_o3_sll_6_plus_0x40)
+	faligndata	%f4, %f6, %f20
+	EX_LD_FP(LOAD(ldd, %o1 + 0x030, %f12), U3_retl_o2_plus_o3_sll_6_plus_0x40)
+	faligndata	%f6, %f8, %f22
+	EX_LD_FP(LOAD(ldd, %o1 + 0x038, %f14), U3_retl_o2_plus_o3_sll_6_plus_0x40)
+	faligndata	%f8, %f10, %f24
+	cmp		%g1, 0
+	be,pt		%XCC, 1f
+	 add		%o0, 0x40, %o0
+	EX_LD_FP(LOAD(ldd, %o1 + 0x040, %f0), U3_retl_o2_plus_o3_sll_6_plus_0x40)
+1:	faligndata	%f10, %f12, %f26
+	faligndata	%f12, %f14, %f28
+	faligndata	%f14, %f0, %f30
+	EX_ST_FP(STORE_BLK(%f16, %o0), U3_retl_o2_plus_o3_sll_6_plus_0x40)
+	add		%o0, 0x40, %o0
+	add		%o1, 0x40, %o1
+	membar		#Sync
+
+	/* Now we copy the (len modulo 64) bytes at the end.
+	 * Note how we borrow the %f0 loaded above.
+	 *
+	 * Also notice how this code is careful not to perform a
+	 * load past the end of the src buffer.
+	 */
+	and		%o2, 0x3f, %o2
+	andcc		%o2, 0x38, %g2
+	be,pn		%XCC, 2f
+	 subcc		%g2, 0x8, %g2
+	be,pn		%XCC, 2f
+	 cmp		%g1, 0
+
+	sub		%o2, %g2, %o2
+	be,a,pt		%XCC, 1f
+	 EX_LD_FP(LOAD(ldd, %o1 + 0x00, %f0), U3_retl_o2_plus_g2)
+
+1:	EX_LD_FP(LOAD(ldd, %o1 + 0x08, %f2), U3_retl_o2_plus_g2)
+	add		%o1, 0x8, %o1
+	subcc		%g2, 0x8, %g2
+	faligndata	%f0, %f2, %f8
+	EX_ST_FP(STORE(std, %f8, %o0), U3_retl_o2_plus_g2_plus_8)
+	be,pn		%XCC, 2f
+	 add		%o0, 0x8, %o0
+	EX_LD_FP(LOAD(ldd, %o1 + 0x08, %f0), U3_retl_o2_plus_g2)
+	add		%o1, 0x8, %o1
+	subcc		%g2, 0x8, %g2
+	faligndata	%f2, %f0, %f8
+	EX_ST_FP(STORE(std, %f8, %o0), U3_retl_o2_plus_g2_plus_8)
+	bne,pn		%XCC, 1b
+	 add		%o0, 0x8, %o0
+
+	/* If anything is left, we copy it one byte at a time.
+	 * Note that %g1 is (src & 0x3) saved above before the
+	 * alignaddr was performed.
+	 */
+2:
+	cmp		%o2, 0
+	add		%o1, %g1, %o1
+	VISExitHalf
+	be,pn		%XCC, end_return
+	 sub		%o0, %o1, %o3
+
+	andcc		%g1, 0x7, %g0
+	bne,pn		%icc, 90f
+	 andcc		%o2, 0x8, %g0
+	be,pt		%icc, 1f
+	 nop
+	EX_LD(LOAD(ldx, %o1, %o5), U3_retl_o2)
+	EX_ST(STORE(stx, %o5, %o1 + %o3), U3_retl_o2)
+	add		%o1, 0x8, %o1
+	sub		%o2, 8, %o2
+
+1:	andcc		%o2, 0x4, %g0
+	be,pt		%icc, 1f
+	 nop
+	EX_LD(LOAD(lduw, %o1, %o5), U3_retl_o2)
+	EX_ST(STORE(stw, %o5, %o1 + %o3), U3_retl_o2)
+	add		%o1, 0x4, %o1
+	sub		%o2, 4, %o2
+
+1:	andcc		%o2, 0x2, %g0
+	be,pt		%icc, 1f
+	 nop
+	EX_LD(LOAD(lduh, %o1, %o5), U3_retl_o2)
+	EX_ST(STORE(sth, %o5, %o1 + %o3), U3_retl_o2)
+	add		%o1, 0x2, %o1
+	sub		%o2, 2, %o2
+
+1:	andcc		%o2, 0x1, %g0
+	be,pt		%icc, end_return
+	 nop
+	EX_LD(LOAD(ldub, %o1, %o5), U3_retl_o2)
+	ba,pt		%xcc, end_return
+	 EX_ST(STORE(stb, %o5, %o1 + %o3), U3_retl_o2)
+
+	.align		64
+	/* 16 <= len < 192 */
+less_than_192:
+	bne,pn		%XCC, 75f
+	 sub		%o0, %o1, %o3
+
+72:
+	andn		%o2, 0xf, GLOBAL_SPARE
+	and		%o2, 0xf, %o2
+1:	subcc		GLOBAL_SPARE, 0x10, GLOBAL_SPARE
+	EX_LD(LOAD(ldx, %o1 + 0x00, %o5), U3_retl_o2_plus_GS_plus_0x10)
+	EX_LD(LOAD(ldx, %o1 + 0x08, %g1), U3_retl_o2_plus_GS_plus_0x10)
+	EX_ST(STORE(stx, %o5, %o1 + %o3), U3_retl_o2_plus_GS_plus_0x10)
+	add		%o1, 0x8, %o1
+	EX_ST(STORE(stx, %g1, %o1 + %o3), U3_retl_o2_plus_GS_plus_0x08)
+	bgu,pt		%XCC, 1b
+	 add		%o1, 0x8, %o1
+73:	andcc		%o2, 0x8, %g0
+	be,pt		%XCC, 1f
+	 nop
+	sub		%o2, 0x8, %o2
+	EX_LD(LOAD(ldx, %o1, %o5), U3_retl_o2_plus_8)
+	EX_ST(STORE(stx, %o5, %o1 + %o3), U3_retl_o2_plus_8)
+	add		%o1, 0x8, %o1
+1:	andcc		%o2, 0x4, %g0
+	be,pt		%XCC, 1f
+	 nop
+	sub		%o2, 0x4, %o2
+	EX_LD(LOAD(lduw, %o1, %o5), U3_retl_o2_plus_4)
+	EX_ST(STORE(stw, %o5, %o1 + %o3), U3_retl_o2_plus_4)
+	add		%o1, 0x4, %o1
+1:	cmp		%o2, 0
+	be,pt		%XCC, end_return
+	 nop
+	ba,pt		%xcc, 90f
+	 nop
+
+75:
+	andcc		%o0, 0x7, %g1
+	sub		%g1, 0x8, %g1
+	be,pn		%icc, 2f
+	 sub		%g0, %g1, %g1
+	sub		%o2, %g1, %o2
+
+1:	subcc		%g1, 1, %g1
+	EX_LD(LOAD(ldub, %o1, %o5), U3_retl_o2_plus_g1_plus_1)
+	EX_ST(STORE(stb, %o5, %o1 + %o3), U3_retl_o2_plus_g1_plus_1)
+	bgu,pt		%icc, 1b
+	 add		%o1, 1, %o1
+
+2:	add		%o1, %o3, %o0
+	andcc		%o1, 0x7, %g1
+	bne,pt		%icc, 8f
+	 sll		%g1, 3, %g1
+
+	cmp		%o2, 16
+	bgeu,pt		%icc, 72b
+	 nop
+	ba,a,pt		%xcc, 73b
+
+8:	mov		64, %o3
+	andn		%o1, 0x7, %o1
+	EX_LD(LOAD(ldx, %o1, %g2), U3_retl_o2)
+	sub		%o3, %g1, %o3
+	andn		%o2, 0x7, GLOBAL_SPARE
+	sllx		%g2, %g1, %g2
+1:	EX_LD(LOAD(ldx, %o1 + 0x8, %g3), U3_retl_o2_and_7_plus_GS)
+	subcc		GLOBAL_SPARE, 0x8, GLOBAL_SPARE
+	add		%o1, 0x8, %o1
+	srlx		%g3, %o3, %o5
+	or		%o5, %g2, %o5
+	EX_ST(STORE(stx, %o5, %o0), U3_retl_o2_and_7_plus_GS_plus_8)
+	add		%o0, 0x8, %o0
+	bgu,pt		%icc, 1b
+	 sllx		%g3, %g1, %g2
+
+	srl		%g1, 3, %g1
+	andcc		%o2, 0x7, %o2
+	be,pn		%icc, end_return
+	 add		%o1, %g1, %o1
+	ba,pt		%xcc, 90f
+	 sub		%o0, %o1, %o3
+
+	.align		64
+	/* 0 < len < 16 */
+less_than_16:
+	andcc		%o3, 0x3, %g0
+	bne,pn		%XCC, 90f
+	 sub		%o0, %o1, %o3
+
+1:
+	subcc		%o2, 4, %o2
+	EX_LD(LOAD(lduw, %o1, %g1), U3_retl_o2_plus_4)
+	EX_ST(STORE(stw, %g1, %o1 + %o3), U3_retl_o2_plus_4)
+	bgu,pt		%XCC, 1b
+	 add		%o1, 4, %o1
+
+end_return:
+	retl
+	 mov		EX_RETVAL(%o4), %o0
+
+	.align		32
+90:
+	subcc		%o2, 1, %o2
+	EX_LD(LOAD(ldub, %o1, %g1), U3_retl_o2_plus_1)
+	EX_ST(STORE(stb, %g1, %o1 + %o3), U3_retl_o2_plus_1)
+	bgu,pt		%XCC, 90b
+	 add		%o1, 1, %o1
+	retl
+	 mov		EX_RETVAL(%o4), %o0
+
+	.size		FUNC_NAME, .-FUNC_NAME
diff --git a/arch/sparc/lib/U3patch.S b/arch/sparc/lib/U3patch.S
new file mode 100644
index 000000000..9a888088f
--- /dev/null
+++ b/arch/sparc/lib/U3patch.S
@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* U3patch.S: Patch Ultra-I routines with Ultra-III variant.
+ *
+ * Copyright (C) 2004 David S. Miller <davem@redhat.com>
+ */
+
+#define BRANCH_ALWAYS	0x10680000
+#define NOP		0x01000000
+#define ULTRA3_DO_PATCH(OLD, NEW)	\
+	sethi	%hi(NEW), %g1; \
+	or	%g1, %lo(NEW), %g1; \
+	sethi	%hi(OLD), %g2; \
+	or	%g2, %lo(OLD), %g2; \
+	sub	%g1, %g2, %g1; \
+	sethi	%hi(BRANCH_ALWAYS), %g3; \
+	sll	%g1, 11, %g1; \
+	srl	%g1, 11 + 2, %g1; \
+	or	%g3, %lo(BRANCH_ALWAYS), %g3; \
+	or	%g3, %g1, %g3; \
+	stw	%g3, [%g2]; \
+	sethi	%hi(NOP), %g3; \
+	or	%g3, %lo(NOP), %g3; \
+	stw	%g3, [%g2 + 0x4]; \
+	flush	%g2;
+
+	.globl	cheetah_patch_copyops
+	.type	cheetah_patch_copyops,#function
+cheetah_patch_copyops:
+	ULTRA3_DO_PATCH(memcpy, U3memcpy)
+	ULTRA3_DO_PATCH(raw_copy_from_user, U3copy_from_user)
+	ULTRA3_DO_PATCH(raw_copy_to_user, U3copy_to_user)
+	retl
+	 nop
+	.size	cheetah_patch_copyops,.-cheetah_patch_copyops
diff --git a/arch/sparc/lib/VISsave.S b/arch/sparc/lib/VISsave.S
new file mode 100644
index 000000000..9c8eb2017
--- /dev/null
+++ b/arch/sparc/lib/VISsave.S
@@ -0,0 +1,84 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * VISsave.S: Code for saving FPU register state for
+ *            VIS routines. One should not call this directly,
+ *            but use macros provided in <asm/visasm.h>.
+ *
+ * Copyright (C) 1998 Jakub Jelinek (jj@ultra.linux.cz)
+ */
+
+#include <linux/linkage.h>
+
+#include <asm/asi.h>
+#include <asm/page.h>
+#include <asm/ptrace.h>
+#include <asm/visasm.h>
+#include <asm/thread_info.h>
+#include <asm/export.h>
+
+	/* On entry: %o5=current FPRS value, %g7 is callers address */
+	/* May clobber %o5, %g1, %g2, %g3, %g7, %icc, %xcc */
+
+	/* Nothing special need be done here to handle pre-emption, this
+	 * FPU save/restore mechanism is already preemption safe.
+	 */
+	.text
+	.align		32
+ENTRY(VISenter)
+	ldub		[%g6 + TI_FPDEPTH], %g1
+	brnz,a,pn	%g1, 1f
+	 cmp		%g1, 1
+	stb		%g0, [%g6 + TI_FPSAVED]
+	stx		%fsr, [%g6 + TI_XFSR]
+9:	jmpl		%g7 + %g0, %g0
+	 nop
+1:	bne,pn		%icc, 2f
+
+	 srl		%g1, 1, %g1
+vis1:	ldub		[%g6 + TI_FPSAVED], %g3
+	stx		%fsr, [%g6 + TI_XFSR]
+	or		%g3, %o5, %g3
+	stb		%g3, [%g6 + TI_FPSAVED]
+	rd		%gsr, %g3
+	clr		%g1
+	ba,pt		%xcc, 3f
+
+	 stx		%g3, [%g6 + TI_GSR]
+2:	add		%g6, %g1, %g3
+	mov		FPRS_DU | FPRS_DL | FPRS_FEF, %o5
+	sll		%g1, 3, %g1
+	stb		%o5, [%g3 + TI_FPSAVED]
+	rd		%gsr, %g2
+	add		%g6, %g1, %g3
+	stx		%g2, [%g3 + TI_GSR]
+
+	add		%g6, %g1, %g2
+	stx		%fsr, [%g2 + TI_XFSR]
+	sll		%g1, 5, %g1
+3:	andcc		%o5, FPRS_DL|FPRS_DU, %g0
+	be,pn		%icc, 9b
+	 add		%g6, TI_FPREGS, %g2
+	andcc		%o5, FPRS_DL, %g0
+
+	be,pn		%icc, 4f
+	 add		%g6, TI_FPREGS+0x40, %g3
+	membar		#Sync
+	stda		%f0, [%g2 + %g1] ASI_BLK_P
+	stda		%f16, [%g3 + %g1] ASI_BLK_P
+	membar		#Sync
+	andcc		%o5, FPRS_DU, %g0
+	be,pn		%icc, 5f
+4:	 add		%g1, 128, %g1
+	membar		#Sync
+	stda		%f32, [%g2 + %g1] ASI_BLK_P
+
+	stda		%f48, [%g3 + %g1] ASI_BLK_P
+5:	membar		#Sync
+	ba,pt		%xcc, 80f
+	 nop
+
+	.align		32
+80:	jmpl		%g7 + %g0, %g0
+	 nop
+ENDPROC(VISenter)
+EXPORT_SYMBOL(VISenter)
diff --git a/arch/sparc/lib/ashldi3.S b/arch/sparc/lib/ashldi3.S
new file mode 100644
index 000000000..2d72de88a
--- /dev/null
+++ b/arch/sparc/lib/ashldi3.S
@@ -0,0 +1,38 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * ashldi3.S:	GCC emits these for certain drivers playing
+ *		with long longs.
+ *
+ * Copyright (C) 1999 David S. Miller (davem@redhat.com)
+ */
+
+#include <linux/linkage.h>
+#include <asm/export.h>
+
+	.text
+ENTRY(__ashldi3)
+	cmp	%o2, 0
+	be	9f
+	 mov	0x20, %g2
+
+	sub	%g2, %o2, %g2
+	cmp	%g2, 0
+	bg	7f
+	 sll	%o0, %o2, %g3
+
+	neg	%g2
+	clr	%o5
+	b	8f
+	 sll	%o1, %g2, %o4
+7:
+	srl	%o1, %g2, %g2
+	sll	%o1, %o2, %o5
+	or	%g3, %g2, %o4
+8:
+	mov	%o4, %o0
+	mov	%o5, %o1
+9:
+	retl
+	 nop
+ENDPROC(__ashldi3)
+EXPORT_SYMBOL(__ashldi3)
diff --git a/arch/sparc/lib/ashrdi3.S b/arch/sparc/lib/ashrdi3.S
new file mode 100644
index 000000000..05dfda9f5
--- /dev/null
+++ b/arch/sparc/lib/ashrdi3.S
@@ -0,0 +1,40 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * ashrdi3.S:	The filesystem code creates all kinds of references to
+ *              this little routine on the sparc with gcc.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#include <linux/linkage.h>
+#include <asm/export.h>
+
+	.text
+ENTRY(__ashrdi3)
+	tst	%o2
+	be	3f
+	 or	%g0, 32, %g2
+
+	sub	%g2, %o2, %g2
+
+	tst	%g2
+	bg	1f
+	 sra	%o0, %o2, %o4
+
+	sra	%o0, 31, %o4
+	sub	%g0, %g2, %g2
+	ba	2f
+	 sra	%o0, %g2, %o5
+
+1:
+	sll	%o0, %g2, %g3
+	srl	%o1, %o2, %g2
+	or	%g2, %g3, %o5
+2:
+	or	%g0, %o4, %o0
+	or	%g0, %o5, %o1
+3:
+	jmpl	%o7 + 8, %g0
+	 nop
+ENDPROC(__ashrdi3)
+EXPORT_SYMBOL(__ashrdi3)
diff --git a/arch/sparc/lib/atomic32.c b/arch/sparc/lib/atomic32.c
new file mode 100644
index 000000000..281fa634b
--- /dev/null
+++ b/arch/sparc/lib/atomic32.c
@@ -0,0 +1,202 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * atomic32.c: 32-bit atomic_t implementation
+ *
+ * Copyright (C) 2004 Keith M Wesolowski
+ * Copyright (C) 2007 Kyle McMartin
+ * 
+ * Based on asm-parisc/atomic.h Copyright (C) 2000 Philipp Rumpf
+ */
+
+#include <linux/atomic.h>
+#include <linux/spinlock.h>
+#include <linux/module.h>
+
+#ifdef CONFIG_SMP
+#define ATOMIC_HASH_SIZE	4
+#define ATOMIC_HASH(a)	(&__atomic_hash[(((unsigned long)a)>>8) & (ATOMIC_HASH_SIZE-1)])
+
+spinlock_t __atomic_hash[ATOMIC_HASH_SIZE] = {
+	[0 ... (ATOMIC_HASH_SIZE-1)] = __SPIN_LOCK_UNLOCKED(__atomic_hash)
+};
+
+#else /* SMP */
+
+static DEFINE_SPINLOCK(dummy);
+#define ATOMIC_HASH_SIZE	1
+#define ATOMIC_HASH(a)		(&dummy)
+
+#endif /* SMP */
+
+#define ATOMIC_FETCH_OP(op, c_op)					\
+int atomic_fetch_##op(int i, atomic_t *v)				\
+{									\
+	int ret;							\
+	unsigned long flags;						\
+	spin_lock_irqsave(ATOMIC_HASH(v), flags);			\
+									\
+	ret = v->counter;						\
+	v->counter c_op i;						\
+									\
+	spin_unlock_irqrestore(ATOMIC_HASH(v), flags);			\
+	return ret;							\
+}									\
+EXPORT_SYMBOL(atomic_fetch_##op);
+
+#define ATOMIC_OP_RETURN(op, c_op)					\
+int atomic_##op##_return(int i, atomic_t *v)				\
+{									\
+	int ret;							\
+	unsigned long flags;						\
+	spin_lock_irqsave(ATOMIC_HASH(v), flags);			\
+									\
+	ret = (v->counter c_op i);					\
+									\
+	spin_unlock_irqrestore(ATOMIC_HASH(v), flags);			\
+	return ret;							\
+}									\
+EXPORT_SYMBOL(atomic_##op##_return);
+
+ATOMIC_OP_RETURN(add, +=)
+
+ATOMIC_FETCH_OP(add, +=)
+ATOMIC_FETCH_OP(and, &=)
+ATOMIC_FETCH_OP(or, |=)
+ATOMIC_FETCH_OP(xor, ^=)
+
+#undef ATOMIC_FETCH_OP
+#undef ATOMIC_OP_RETURN
+
+int atomic_xchg(atomic_t *v, int new)
+{
+	int ret;
+	unsigned long flags;
+
+	spin_lock_irqsave(ATOMIC_HASH(v), flags);
+	ret = v->counter;
+	v->counter = new;
+	spin_unlock_irqrestore(ATOMIC_HASH(v), flags);
+	return ret;
+}
+EXPORT_SYMBOL(atomic_xchg);
+
+int atomic_cmpxchg(atomic_t *v, int old, int new)
+{
+	int ret;
+	unsigned long flags;
+
+	spin_lock_irqsave(ATOMIC_HASH(v), flags);
+	ret = v->counter;
+	if (likely(ret == old))
+		v->counter = new;
+
+	spin_unlock_irqrestore(ATOMIC_HASH(v), flags);
+	return ret;
+}
+EXPORT_SYMBOL(atomic_cmpxchg);
+
+int atomic_fetch_add_unless(atomic_t *v, int a, int u)
+{
+	int ret;
+	unsigned long flags;
+
+	spin_lock_irqsave(ATOMIC_HASH(v), flags);
+	ret = v->counter;
+	if (ret != u)
+		v->counter += a;
+	spin_unlock_irqrestore(ATOMIC_HASH(v), flags);
+	return ret;
+}
+EXPORT_SYMBOL(atomic_fetch_add_unless);
+
+/* Atomic operations are already serializing */
+void atomic_set(atomic_t *v, int i)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(ATOMIC_HASH(v), flags);
+	v->counter = i;
+	spin_unlock_irqrestore(ATOMIC_HASH(v), flags);
+}
+EXPORT_SYMBOL(atomic_set);
+
+unsigned long ___set_bit(unsigned long *addr, unsigned long mask)
+{
+	unsigned long old, flags;
+
+	spin_lock_irqsave(ATOMIC_HASH(addr), flags);
+	old = *addr;
+	*addr = old | mask;
+	spin_unlock_irqrestore(ATOMIC_HASH(addr), flags);
+
+	return old & mask;
+}
+EXPORT_SYMBOL(___set_bit);
+
+unsigned long ___clear_bit(unsigned long *addr, unsigned long mask)
+{
+	unsigned long old, flags;
+
+	spin_lock_irqsave(ATOMIC_HASH(addr), flags);
+	old = *addr;
+	*addr = old & ~mask;
+	spin_unlock_irqrestore(ATOMIC_HASH(addr), flags);
+
+	return old & mask;
+}
+EXPORT_SYMBOL(___clear_bit);
+
+unsigned long ___change_bit(unsigned long *addr, unsigned long mask)
+{
+	unsigned long old, flags;
+
+	spin_lock_irqsave(ATOMIC_HASH(addr), flags);
+	old = *addr;
+	*addr = old ^ mask;
+	spin_unlock_irqrestore(ATOMIC_HASH(addr), flags);
+
+	return old & mask;
+}
+EXPORT_SYMBOL(___change_bit);
+
+unsigned long __cmpxchg_u32(volatile u32 *ptr, u32 old, u32 new)
+{
+	unsigned long flags;
+	u32 prev;
+
+	spin_lock_irqsave(ATOMIC_HASH(ptr), flags);
+	if ((prev = *ptr) == old)
+		*ptr = new;
+	spin_unlock_irqrestore(ATOMIC_HASH(ptr), flags);
+
+	return (unsigned long)prev;
+}
+EXPORT_SYMBOL(__cmpxchg_u32);
+
+u64 __cmpxchg_u64(u64 *ptr, u64 old, u64 new)
+{
+	unsigned long flags;
+	u64 prev;
+
+	spin_lock_irqsave(ATOMIC_HASH(ptr), flags);
+	if ((prev = *ptr) == old)
+		*ptr = new;
+	spin_unlock_irqrestore(ATOMIC_HASH(ptr), flags);
+
+	return prev;
+}
+EXPORT_SYMBOL(__cmpxchg_u64);
+
+unsigned long __xchg_u32(volatile u32 *ptr, u32 new)
+{
+	unsigned long flags;
+	u32 prev;
+
+	spin_lock_irqsave(ATOMIC_HASH(ptr), flags);
+	prev = *ptr;
+	*ptr = new;
+	spin_unlock_irqrestore(ATOMIC_HASH(ptr), flags);
+
+	return (unsigned long)prev;
+}
+EXPORT_SYMBOL(__xchg_u32);
diff --git a/arch/sparc/lib/atomic_64.S b/arch/sparc/lib/atomic_64.S
new file mode 100644
index 000000000..456b65a30
--- /dev/null
+++ b/arch/sparc/lib/atomic_64.S
@@ -0,0 +1,166 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* atomic.S: These things are too big to do inline.
+ *
+ * Copyright (C) 1999, 2007 2012 David S. Miller (davem@davemloft.net)
+ */
+
+#include <linux/linkage.h>
+#include <asm/asi.h>
+#include <asm/backoff.h>
+#include <asm/export.h>
+
+	.text
+
+	/* Three versions of the atomic routines, one that
+	 * does not return a value and does not perform
+	 * memory barriers, and a two which return
+	 * a value, the new and old value resp. and does the
+	 * barriers.
+	 */
+
+#define ATOMIC_OP(op)							\
+ENTRY(atomic_##op) /* %o0 = increment, %o1 = atomic_ptr */		\
+	BACKOFF_SETUP(%o2);						\
+1:	lduw	[%o1], %g1;						\
+	op	%g1, %o0, %g7;						\
+	cas	[%o1], %g1, %g7;					\
+	cmp	%g1, %g7;						\
+	bne,pn	%icc, BACKOFF_LABEL(2f, 1b);				\
+	 nop;								\
+	retl;								\
+	 nop;								\
+2:	BACKOFF_SPIN(%o2, %o3, 1b);					\
+ENDPROC(atomic_##op);							\
+EXPORT_SYMBOL(atomic_##op);
+
+#define ATOMIC_OP_RETURN(op)						\
+ENTRY(atomic_##op##_return) /* %o0 = increment, %o1 = atomic_ptr */	\
+	BACKOFF_SETUP(%o2);						\
+1:	lduw	[%o1], %g1;						\
+	op	%g1, %o0, %g7;						\
+	cas	[%o1], %g1, %g7;					\
+	cmp	%g1, %g7;						\
+	bne,pn	%icc, BACKOFF_LABEL(2f, 1b);				\
+	 op	%g1, %o0, %g1;						\
+	retl;								\
+	 sra	%g1, 0, %o0;						\
+2:	BACKOFF_SPIN(%o2, %o3, 1b);					\
+ENDPROC(atomic_##op##_return);						\
+EXPORT_SYMBOL(atomic_##op##_return);
+
+#define ATOMIC_FETCH_OP(op)						\
+ENTRY(atomic_fetch_##op) /* %o0 = increment, %o1 = atomic_ptr */	\
+	BACKOFF_SETUP(%o2);						\
+1:	lduw	[%o1], %g1;						\
+	op	%g1, %o0, %g7;						\
+	cas	[%o1], %g1, %g7;					\
+	cmp	%g1, %g7;						\
+	bne,pn	%icc, BACKOFF_LABEL(2f, 1b);				\
+	 nop;								\
+	retl;								\
+	 sra	%g1, 0, %o0;						\
+2:	BACKOFF_SPIN(%o2, %o3, 1b);					\
+ENDPROC(atomic_fetch_##op);						\
+EXPORT_SYMBOL(atomic_fetch_##op);
+
+ATOMIC_OP(add)
+ATOMIC_OP_RETURN(add)
+ATOMIC_FETCH_OP(add)
+
+ATOMIC_OP(sub)
+ATOMIC_OP_RETURN(sub)
+ATOMIC_FETCH_OP(sub)
+
+ATOMIC_OP(and)
+ATOMIC_FETCH_OP(and)
+
+ATOMIC_OP(or)
+ATOMIC_FETCH_OP(or)
+
+ATOMIC_OP(xor)
+ATOMIC_FETCH_OP(xor)
+
+#undef ATOMIC_FETCH_OP
+#undef ATOMIC_OP_RETURN
+#undef ATOMIC_OP
+
+#define ATOMIC64_OP(op)							\
+ENTRY(atomic64_##op) /* %o0 = increment, %o1 = atomic_ptr */		\
+	BACKOFF_SETUP(%o2);						\
+1:	ldx	[%o1], %g1;						\
+	op	%g1, %o0, %g7;						\
+	casx	[%o1], %g1, %g7;					\
+	cmp	%g1, %g7;						\
+	bne,pn	%xcc, BACKOFF_LABEL(2f, 1b);				\
+	 nop;								\
+	retl;								\
+	 nop;								\
+2:	BACKOFF_SPIN(%o2, %o3, 1b);					\
+ENDPROC(atomic64_##op);							\
+EXPORT_SYMBOL(atomic64_##op);
+
+#define ATOMIC64_OP_RETURN(op)						\
+ENTRY(atomic64_##op##_return) /* %o0 = increment, %o1 = atomic_ptr */	\
+	BACKOFF_SETUP(%o2);						\
+1:	ldx	[%o1], %g1;						\
+	op	%g1, %o0, %g7;						\
+	casx	[%o1], %g1, %g7;					\
+	cmp	%g1, %g7;						\
+	bne,pn	%xcc, BACKOFF_LABEL(2f, 1b);				\
+	 nop;								\
+	retl;								\
+	 op	%g1, %o0, %o0;						\
+2:	BACKOFF_SPIN(%o2, %o3, 1b);					\
+ENDPROC(atomic64_##op##_return);					\
+EXPORT_SYMBOL(atomic64_##op##_return);
+
+#define ATOMIC64_FETCH_OP(op)						\
+ENTRY(atomic64_fetch_##op) /* %o0 = increment, %o1 = atomic_ptr */	\
+	BACKOFF_SETUP(%o2);						\
+1:	ldx	[%o1], %g1;						\
+	op	%g1, %o0, %g7;						\
+	casx	[%o1], %g1, %g7;					\
+	cmp	%g1, %g7;						\
+	bne,pn	%xcc, BACKOFF_LABEL(2f, 1b);				\
+	 nop;								\
+	retl;								\
+	 mov	%g1, %o0;						\
+2:	BACKOFF_SPIN(%o2, %o3, 1b);					\
+ENDPROC(atomic64_fetch_##op);						\
+EXPORT_SYMBOL(atomic64_fetch_##op);
+
+ATOMIC64_OP(add)
+ATOMIC64_OP_RETURN(add)
+ATOMIC64_FETCH_OP(add)
+
+ATOMIC64_OP(sub)
+ATOMIC64_OP_RETURN(sub)
+ATOMIC64_FETCH_OP(sub)
+
+ATOMIC64_OP(and)
+ATOMIC64_FETCH_OP(and)
+
+ATOMIC64_OP(or)
+ATOMIC64_FETCH_OP(or)
+
+ATOMIC64_OP(xor)
+ATOMIC64_FETCH_OP(xor)
+
+#undef ATOMIC64_FETCH_OP
+#undef ATOMIC64_OP_RETURN
+#undef ATOMIC64_OP
+
+ENTRY(atomic64_dec_if_positive) /* %o0 = atomic_ptr */
+	BACKOFF_SETUP(%o2)
+1:	ldx	[%o0], %g1
+	brlez,pn %g1, 3f
+	 sub	%g1, 1, %g7
+	casx	[%o0], %g1, %g7
+	cmp	%g1, %g7
+	bne,pn	%xcc, BACKOFF_LABEL(2f, 1b)
+	 nop
+3:	retl
+	 sub	%g1, 1, %o0
+2:	BACKOFF_SPIN(%o2, %o3, 1b)
+ENDPROC(atomic64_dec_if_positive)
+EXPORT_SYMBOL(atomic64_dec_if_positive)
diff --git a/arch/sparc/lib/bitext.c b/arch/sparc/lib/bitext.c
new file mode 100644
index 000000000..32a5c1d94
--- /dev/null
+++ b/arch/sparc/lib/bitext.c
@@ -0,0 +1,128 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * bitext.c: kernel little helper (of bit shuffling variety).
+ *
+ * Copyright (C) 2002 Pete Zaitcev <zaitcev@yahoo.com>
+ *
+ * The algorithm to search a zero bit string is geared towards its application.
+ * We expect a couple of fixed sizes of requests, so a rotating counter, reset
+ * by align size, should provide fast enough search while maintaining low
+ * fragmentation.
+ */
+
+#include <linux/string.h>
+#include <linux/bitmap.h>
+
+#include <asm/bitext.h>
+
+/**
+ * bit_map_string_get - find and set a bit string in bit map.
+ * @t: the bit map.
+ * @len: requested string length
+ * @align: requested alignment
+ *
+ * Returns offset in the map or -1 if out of space.
+ *
+ * Not safe to call from an interrupt (uses spin_lock).
+ */
+int bit_map_string_get(struct bit_map *t, int len, int align)
+{
+	int offset, count;	/* siamese twins */
+	int off_new;
+	int align1;
+	int i, color;
+
+	if (t->num_colors) {
+		/* align is overloaded to be the page color */
+		color = align;
+		align = t->num_colors;
+	} else {
+		color = 0;
+		if (align == 0)
+			align = 1;
+	}
+	align1 = align - 1;
+	if ((align & align1) != 0)
+		BUG();
+	if (align < 0 || align >= t->size)
+		BUG();
+	if (len <= 0 || len > t->size)
+		BUG();
+	color &= align1;
+
+	spin_lock(&t->lock);
+	if (len < t->last_size)
+		offset = t->first_free;
+	else
+		offset = t->last_off & ~align1;
+	count = 0;
+	for (;;) {
+		off_new = find_next_zero_bit(t->map, t->size, offset);
+		off_new = ((off_new + align1) & ~align1) + color;
+		count += off_new - offset;
+		offset = off_new;
+		if (offset >= t->size)
+			offset = 0;
+		if (count + len > t->size) {
+			spin_unlock(&t->lock);
+/* P3 */ printk(KERN_ERR
+  "bitmap out: size %d used %d off %d len %d align %d count %d\n",
+  t->size, t->used, offset, len, align, count);
+			return -1;
+		}
+
+		if (offset + len > t->size) {
+			count += t->size - offset;
+			offset = 0;
+			continue;
+		}
+
+		i = 0;
+		while (test_bit(offset + i, t->map) == 0) {
+			i++;
+			if (i == len) {
+				bitmap_set(t->map, offset, len);
+				if (offset == t->first_free)
+					t->first_free = find_next_zero_bit
+							(t->map, t->size,
+							 t->first_free + len);
+				if ((t->last_off = offset + len) >= t->size)
+					t->last_off = 0;
+				t->used += len;
+				t->last_size = len;
+				spin_unlock(&t->lock);
+				return offset;
+			}
+		}
+		count += i + 1;
+		if ((offset += i + 1) >= t->size)
+			offset = 0;
+	}
+}
+
+void bit_map_clear(struct bit_map *t, int offset, int len)
+{
+	int i;
+
+	if (t->used < len)
+		BUG();		/* Much too late to do any good, but alas... */
+	spin_lock(&t->lock);
+	for (i = 0; i < len; i++) {
+		if (test_bit(offset + i, t->map) == 0)
+			BUG();
+		__clear_bit(offset + i, t->map);
+	}
+	if (offset < t->first_free)
+		t->first_free = offset;
+	t->used -= len;
+	spin_unlock(&t->lock);
+}
+
+void bit_map_init(struct bit_map *t, unsigned long *map, int size)
+{
+	bitmap_zero(map, size);
+	memset(t, 0, sizeof *t);
+	spin_lock_init(&t->lock);
+	t->map = map;
+	t->size = size;
+}
diff --git a/arch/sparc/lib/bitops.S b/arch/sparc/lib/bitops.S
new file mode 100644
index 000000000..9d647f977
--- /dev/null
+++ b/arch/sparc/lib/bitops.S
@@ -0,0 +1,138 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* bitops.S: Sparc64 atomic bit operations.
+ *
+ * Copyright (C) 2000, 2007 David S. Miller (davem@davemloft.net)
+ */
+
+#include <linux/linkage.h>
+#include <asm/asi.h>
+#include <asm/backoff.h>
+#include <asm/export.h>
+
+	.text
+
+ENTRY(test_and_set_bit)	/* %o0=nr, %o1=addr */
+	BACKOFF_SETUP(%o3)
+	srlx	%o0, 6, %g1
+	mov	1, %o2
+	sllx	%g1, 3, %g3
+	and	%o0, 63, %g2
+	sllx	%o2, %g2, %o2
+	add	%o1, %g3, %o1
+1:	ldx	[%o1], %g7
+	or	%g7, %o2, %g1
+	casx	[%o1], %g7, %g1
+	cmp	%g7, %g1
+	bne,pn	%xcc, BACKOFF_LABEL(2f, 1b)
+	 and	%g7, %o2, %g2
+	clr	%o0
+	movrne	%g2, 1, %o0
+	retl
+	 nop
+2:	BACKOFF_SPIN(%o3, %o4, 1b)
+ENDPROC(test_and_set_bit)
+EXPORT_SYMBOL(test_and_set_bit)
+
+ENTRY(test_and_clear_bit) /* %o0=nr, %o1=addr */
+	BACKOFF_SETUP(%o3)
+	srlx	%o0, 6, %g1
+	mov	1, %o2
+	sllx	%g1, 3, %g3
+	and	%o0, 63, %g2
+	sllx	%o2, %g2, %o2
+	add	%o1, %g3, %o1
+1:	ldx	[%o1], %g7
+	andn	%g7, %o2, %g1
+	casx	[%o1], %g7, %g1
+	cmp	%g7, %g1
+	bne,pn	%xcc, BACKOFF_LABEL(2f, 1b)
+	 and	%g7, %o2, %g2
+	clr	%o0
+	movrne	%g2, 1, %o0
+	retl
+	 nop
+2:	BACKOFF_SPIN(%o3, %o4, 1b)
+ENDPROC(test_and_clear_bit)
+EXPORT_SYMBOL(test_and_clear_bit)
+
+ENTRY(test_and_change_bit) /* %o0=nr, %o1=addr */
+	BACKOFF_SETUP(%o3)
+	srlx	%o0, 6, %g1
+	mov	1, %o2
+	sllx	%g1, 3, %g3
+	and	%o0, 63, %g2
+	sllx	%o2, %g2, %o2
+	add	%o1, %g3, %o1
+1:	ldx	[%o1], %g7
+	xor	%g7, %o2, %g1
+	casx	[%o1], %g7, %g1
+	cmp	%g7, %g1
+	bne,pn	%xcc, BACKOFF_LABEL(2f, 1b)
+	 and	%g7, %o2, %g2
+	clr	%o0
+	movrne	%g2, 1, %o0
+	retl
+	 nop
+2:	BACKOFF_SPIN(%o3, %o4, 1b)
+ENDPROC(test_and_change_bit)
+EXPORT_SYMBOL(test_and_change_bit)
+
+ENTRY(set_bit) /* %o0=nr, %o1=addr */
+	BACKOFF_SETUP(%o3)
+	srlx	%o0, 6, %g1
+	mov	1, %o2
+	sllx	%g1, 3, %g3
+	and	%o0, 63, %g2
+	sllx	%o2, %g2, %o2
+	add	%o1, %g3, %o1
+1:	ldx	[%o1], %g7
+	or	%g7, %o2, %g1
+	casx	[%o1], %g7, %g1
+	cmp	%g7, %g1
+	bne,pn	%xcc, BACKOFF_LABEL(2f, 1b)
+	 nop
+	retl
+	 nop
+2:	BACKOFF_SPIN(%o3, %o4, 1b)
+ENDPROC(set_bit)
+EXPORT_SYMBOL(set_bit)
+
+ENTRY(clear_bit) /* %o0=nr, %o1=addr */
+	BACKOFF_SETUP(%o3)
+	srlx	%o0, 6, %g1
+	mov	1, %o2
+	sllx	%g1, 3, %g3
+	and	%o0, 63, %g2
+	sllx	%o2, %g2, %o2
+	add	%o1, %g3, %o1
+1:	ldx	[%o1], %g7
+	andn	%g7, %o2, %g1
+	casx	[%o1], %g7, %g1
+	cmp	%g7, %g1
+	bne,pn	%xcc, BACKOFF_LABEL(2f, 1b)
+	 nop
+	retl
+	 nop
+2:	BACKOFF_SPIN(%o3, %o4, 1b)
+ENDPROC(clear_bit)
+EXPORT_SYMBOL(clear_bit)
+
+ENTRY(change_bit) /* %o0=nr, %o1=addr */
+	BACKOFF_SETUP(%o3)
+	srlx	%o0, 6, %g1
+	mov	1, %o2
+	sllx	%g1, 3, %g3
+	and	%o0, 63, %g2
+	sllx	%o2, %g2, %o2
+	add	%o1, %g3, %o1
+1:	ldx	[%o1], %g7
+	xor	%g7, %o2, %g1
+	casx	[%o1], %g7, %g1
+	cmp	%g7, %g1
+	bne,pn	%xcc, BACKOFF_LABEL(2f, 1b)
+	 nop
+	retl
+	 nop
+2:	BACKOFF_SPIN(%o3, %o4, 1b)
+ENDPROC(change_bit)
+EXPORT_SYMBOL(change_bit)
diff --git a/arch/sparc/lib/blockops.S b/arch/sparc/lib/blockops.S
new file mode 100644
index 000000000..76ddd1ff6
--- /dev/null
+++ b/arch/sparc/lib/blockops.S
@@ -0,0 +1,93 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * blockops.S: Common block zero optimized routines.
+ *
+ * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#include <linux/linkage.h>
+#include <asm/page.h>
+#include <asm/export.h>
+
+	/* Zero out 64 bytes of memory at (buf + offset).
+	 * Assumes %g1 contains zero.
+	 */
+#define BLAST_BLOCK(buf, offset) \
+	std	%g0, [buf + offset + 0x38]; \
+	std	%g0, [buf + offset + 0x30]; \
+	std	%g0, [buf + offset + 0x28]; \
+	std	%g0, [buf + offset + 0x20]; \
+	std	%g0, [buf + offset + 0x18]; \
+	std	%g0, [buf + offset + 0x10]; \
+	std	%g0, [buf + offset + 0x08]; \
+	std	%g0, [buf + offset + 0x00];
+
+	/* Copy 32 bytes of memory at (src + offset) to
+	 * (dst + offset).
+	 */
+#define MIRROR_BLOCK(dst, src, offset, t0, t1, t2, t3, t4, t5, t6, t7) \
+	ldd	[src + offset + 0x18], t0; \
+	ldd	[src + offset + 0x10], t2; \
+	ldd	[src + offset + 0x08], t4; \
+	ldd	[src + offset + 0x00], t6; \
+	std	t0, [dst + offset + 0x18]; \
+	std	t2, [dst + offset + 0x10]; \
+	std	t4, [dst + offset + 0x08]; \
+	std	t6, [dst + offset + 0x00];
+
+	/* Profiling evidence indicates that memset() is
+	 * commonly called for blocks of size PAGE_SIZE,
+	 * and (2 * PAGE_SIZE) (for kernel stacks)
+	 * and with a second arg of zero.  We assume in
+	 * all of these cases that the buffer is aligned
+	 * on at least an 8 byte boundary.
+	 *
+	 * Therefore we special case them to make them
+	 * as fast as possible.
+	 */
+
+	.text
+ENTRY(bzero_1page)
+/* NOTE: If you change the number of insns of this routine, please check
+ * arch/sparc/mm/hypersparc.S */
+	/* %o0 = buf */
+	or	%g0, %g0, %g1
+	or	%o0, %g0, %o1
+	or	%g0, (PAGE_SIZE >> 8), %g2
+1:
+	BLAST_BLOCK(%o0, 0x00)
+	BLAST_BLOCK(%o0, 0x40)
+	BLAST_BLOCK(%o0, 0x80)
+	BLAST_BLOCK(%o0, 0xc0)
+	subcc	%g2, 1, %g2
+	bne	1b
+	 add	%o0, 0x100, %o0
+
+	retl
+	 nop
+ENDPROC(bzero_1page)
+EXPORT_SYMBOL(bzero_1page)
+
+ENTRY(__copy_1page)
+/* NOTE: If you change the number of insns of this routine, please check
+ * arch/sparc/mm/hypersparc.S */
+	/* %o0 = dst, %o1 = src */
+	or	%g0, (PAGE_SIZE >> 8), %g1
+1:
+	MIRROR_BLOCK(%o0, %o1, 0x00, %o2, %o3, %o4, %o5, %g2, %g3, %g4, %g5)
+	MIRROR_BLOCK(%o0, %o1, 0x20, %o2, %o3, %o4, %o5, %g2, %g3, %g4, %g5)
+	MIRROR_BLOCK(%o0, %o1, 0x40, %o2, %o3, %o4, %o5, %g2, %g3, %g4, %g5)
+	MIRROR_BLOCK(%o0, %o1, 0x60, %o2, %o3, %o4, %o5, %g2, %g3, %g4, %g5)
+	MIRROR_BLOCK(%o0, %o1, 0x80, %o2, %o3, %o4, %o5, %g2, %g3, %g4, %g5)
+	MIRROR_BLOCK(%o0, %o1, 0xa0, %o2, %o3, %o4, %o5, %g2, %g3, %g4, %g5)
+	MIRROR_BLOCK(%o0, %o1, 0xc0, %o2, %o3, %o4, %o5, %g2, %g3, %g4, %g5)
+	MIRROR_BLOCK(%o0, %o1, 0xe0, %o2, %o3, %o4, %o5, %g2, %g3, %g4, %g5)
+	subcc	%g1, 1, %g1
+	add	%o0, 0x100, %o0
+	bne	1b
+	 add	%o1, 0x100, %o1
+
+	retl
+	 nop
+ENDPROC(__copy_1page)
+EXPORT_SYMBOL(__copy_1page)
diff --git a/arch/sparc/lib/bzero.S b/arch/sparc/lib/bzero.S
new file mode 100644
index 000000000..87fec4cbe
--- /dev/null
+++ b/arch/sparc/lib/bzero.S
@@ -0,0 +1,150 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* bzero.S: Simple prefetching memset, bzero, and clear_user
+ *          implementations.
+ *
+ * Copyright (C) 2005 David S. Miller <davem@davemloft.net>
+ */
+
+#include <linux/linkage.h>
+#include <asm/export.h>
+
+	.text
+
+ENTRY(memset) /* %o0=buf, %o1=pat, %o2=len */
+	and		%o1, 0xff, %o3
+	mov		%o2, %o1
+	sllx		%o3, 8, %g1
+	or		%g1, %o3, %o2
+	sllx		%o2, 16, %g1
+	or		%g1, %o2, %o2
+	sllx		%o2, 32, %g1
+	ba,pt		%xcc, 1f
+	 or		%g1, %o2, %o2
+
+ENTRY(__bzero) /* %o0=buf, %o1=len */
+	clr		%o2
+1:	mov		%o0, %o3
+	brz,pn		%o1, __bzero_done
+	 cmp		%o1, 16
+	bl,pn		%icc, __bzero_tiny
+	 prefetch	[%o0 + 0x000], #n_writes
+	andcc		%o0, 0x3, %g0
+	be,pt		%icc, 2f
+1:	 stb		%o2, [%o0 + 0x00]
+	add		%o0, 1, %o0
+	andcc		%o0, 0x3, %g0
+	bne,pn		%icc, 1b
+	 sub		%o1, 1, %o1
+2:	andcc		%o0, 0x7, %g0
+	be,pt		%icc, 3f
+	 stw		%o2, [%o0 + 0x00]
+	sub		%o1, 4, %o1
+	add		%o0, 4, %o0
+3:	and		%o1, 0x38, %g1
+	cmp		%o1, 0x40
+	andn		%o1, 0x3f, %o4
+	bl,pn		%icc, 5f
+	 and		%o1, 0x7, %o1
+	prefetch	[%o0 + 0x040], #n_writes
+	prefetch	[%o0 + 0x080], #n_writes
+	prefetch	[%o0 + 0x0c0], #n_writes
+	prefetch	[%o0 + 0x100], #n_writes
+	prefetch	[%o0 + 0x140], #n_writes
+4:	prefetch	[%o0 + 0x180], #n_writes
+	stx		%o2, [%o0 + 0x00]
+	stx		%o2, [%o0 + 0x08]
+	stx		%o2, [%o0 + 0x10]
+	stx		%o2, [%o0 + 0x18]
+	stx		%o2, [%o0 + 0x20]
+	stx		%o2, [%o0 + 0x28]
+	stx		%o2, [%o0 + 0x30]
+	stx		%o2, [%o0 + 0x38]
+	subcc		%o4, 0x40, %o4
+	bne,pt		%icc, 4b
+	 add		%o0, 0x40, %o0
+	brz,pn		%g1, 6f
+	 nop
+5:	stx		%o2, [%o0 + 0x00]
+	subcc		%g1, 8, %g1
+	bne,pt		%icc, 5b
+	 add		%o0, 0x8, %o0
+6:	brz,pt		%o1, __bzero_done
+	 nop
+__bzero_tiny:
+1:	stb		%o2, [%o0 + 0x00]
+	subcc		%o1, 1, %o1
+	bne,pt		%icc, 1b
+	 add		%o0, 1, %o0
+__bzero_done:
+	retl
+	 mov		%o3, %o0
+ENDPROC(__bzero)
+ENDPROC(memset)
+EXPORT_SYMBOL(__bzero)
+EXPORT_SYMBOL(memset)
+
+#define EX_ST(x,y)		\
+98:	x,y;			\
+	.section __ex_table,"a";\
+	.align 4;		\
+	.word 98b, __retl_o1;	\
+	.text;			\
+	.align 4;
+
+ENTRY(__clear_user) /* %o0=buf, %o1=len */
+	brz,pn		%o1, __clear_user_done
+	 cmp		%o1, 16
+	bl,pn		%icc, __clear_user_tiny
+	 EX_ST(prefetcha [%o0 + 0x00] %asi, #n_writes)
+	andcc		%o0, 0x3, %g0
+	be,pt		%icc, 2f
+1:	 EX_ST(stba	%g0, [%o0 + 0x00] %asi)
+	add		%o0, 1, %o0
+	andcc		%o0, 0x3, %g0
+	bne,pn		%icc, 1b
+	 sub		%o1, 1, %o1
+2:	andcc		%o0, 0x7, %g0
+	be,pt		%icc, 3f
+	 EX_ST(stwa	%g0, [%o0 + 0x00] %asi)
+	sub		%o1, 4, %o1
+	add		%o0, 4, %o0
+3:	and		%o1, 0x38, %g1
+	cmp		%o1, 0x40
+	andn		%o1, 0x3f, %o4
+	bl,pn		%icc, 5f
+	 and		%o1, 0x7, %o1
+	EX_ST(prefetcha	[%o0 + 0x040] %asi, #n_writes)
+	EX_ST(prefetcha	[%o0 + 0x080] %asi, #n_writes)
+	EX_ST(prefetcha	[%o0 + 0x0c0] %asi, #n_writes)
+	EX_ST(prefetcha	[%o0 + 0x100] %asi, #n_writes)
+	EX_ST(prefetcha	[%o0 + 0x140] %asi, #n_writes)
+4:	EX_ST(prefetcha	[%o0 + 0x180] %asi, #n_writes)
+	EX_ST(stxa	%g0, [%o0 + 0x00] %asi)
+	EX_ST(stxa	%g0, [%o0 + 0x08] %asi)
+	EX_ST(stxa	%g0, [%o0 + 0x10] %asi)
+	EX_ST(stxa	%g0, [%o0 + 0x18] %asi)
+	EX_ST(stxa	%g0, [%o0 + 0x20] %asi)
+	EX_ST(stxa	%g0, [%o0 + 0x28] %asi)
+	EX_ST(stxa	%g0, [%o0 + 0x30] %asi)
+	EX_ST(stxa	%g0, [%o0 + 0x38] %asi)
+	subcc		%o4, 0x40, %o4
+	bne,pt		%icc, 4b
+	 add		%o0, 0x40, %o0
+	brz,pn		%g1, 6f
+	 nop
+5:	EX_ST(stxa	%g0, [%o0 + 0x00] %asi)
+	subcc		%g1, 8, %g1
+	bne,pt		%icc, 5b
+	 add		%o0, 0x8, %o0
+6:	brz,pt		%o1, __clear_user_done
+	 nop
+__clear_user_tiny:
+1:	EX_ST(stba	%g0, [%o0 + 0x00] %asi)
+	subcc		%o1, 1, %o1
+	bne,pt		%icc, 1b
+	 add		%o0, 1, %o0
+__clear_user_done:
+	retl
+	 clr		%o0
+ENDPROC(__clear_user)
+EXPORT_SYMBOL(__clear_user)
diff --git a/arch/sparc/lib/checksum_32.S b/arch/sparc/lib/checksum_32.S
new file mode 100644
index 000000000..6a5469c97
--- /dev/null
+++ b/arch/sparc/lib/checksum_32.S
@@ -0,0 +1,593 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* checksum.S: Sparc optimized checksum code.
+ *
+ *  Copyright(C) 1995 Linus Torvalds
+ *  Copyright(C) 1995 Miguel de Icaza
+ *  Copyright(C) 1996 David S. Miller
+ *  Copyright(C) 1997 Jakub Jelinek
+ *
+ * derived from:
+ *	Linux/Alpha checksum c-code
+ *      Linux/ix86 inline checksum assembly
+ *      RFC1071 Computing the Internet Checksum (esp. Jacobsons m68k code)
+ *	David Mosberger-Tang for optimized reference c-code
+ *	BSD4.4 portable checksum routine
+ */
+
+#include <asm/errno.h>
+#include <asm/export.h>
+
+#define CSUM_BIGCHUNK(buf, offset, sum, t0, t1, t2, t3, t4, t5)	\
+	ldd	[buf + offset + 0x00], t0;			\
+	ldd	[buf + offset + 0x08], t2;			\
+	addxcc	t0, sum, sum;					\
+	addxcc	t1, sum, sum;					\
+	ldd	[buf + offset + 0x10], t4;			\
+	addxcc	t2, sum, sum;					\
+	addxcc	t3, sum, sum;					\
+	ldd	[buf + offset + 0x18], t0;			\
+	addxcc	t4, sum, sum;					\
+	addxcc	t5, sum, sum;					\
+	addxcc	t0, sum, sum;					\
+	addxcc	t1, sum, sum;
+
+#define CSUM_LASTCHUNK(buf, offset, sum, t0, t1, t2, t3)	\
+	ldd	[buf - offset - 0x08], t0;			\
+	ldd	[buf - offset - 0x00], t2;			\
+	addxcc	t0, sum, sum;					\
+	addxcc	t1, sum, sum;					\
+	addxcc	t2, sum, sum;					\
+	addxcc	t3, sum, sum;
+
+	/* Do end cruft out of band to get better cache patterns. */
+csum_partial_end_cruft:
+	be	1f				! caller asks %o1 & 0x8
+	 andcc	%o1, 4, %g0			! nope, check for word remaining
+	ldd	[%o0], %g2			! load two
+	addcc	%g2, %o2, %o2			! add first word to sum
+	addxcc	%g3, %o2, %o2			! add second word as well
+	add	%o0, 8, %o0			! advance buf ptr
+	addx	%g0, %o2, %o2			! add in final carry
+	andcc	%o1, 4, %g0			! check again for word remaining
+1:	be	1f				! nope, skip this code
+	 andcc	%o1, 3, %o1			! check for trailing bytes
+	ld	[%o0], %g2			! load it
+	addcc	%g2, %o2, %o2			! add to sum
+	add	%o0, 4, %o0			! advance buf ptr
+	addx	%g0, %o2, %o2			! add in final carry
+	andcc	%o1, 3, %g0			! check again for trailing bytes
+1:	be	1f				! no trailing bytes, return
+	 addcc	%o1, -1, %g0			! only one byte remains?
+	bne	2f				! at least two bytes more
+	 subcc	%o1, 2, %o1			! only two bytes more?
+	b	4f				! only one byte remains
+	 or	%g0, %g0, %o4			! clear fake hword value
+2:	lduh	[%o0], %o4			! get hword
+	be	6f				! jmp if only hword remains
+	 add	%o0, 2, %o0			! advance buf ptr either way
+	sll	%o4, 16, %o4			! create upper hword
+4:	ldub	[%o0], %o5			! get final byte
+	sll	%o5, 8, %o5			! put into place
+	or	%o5, %o4, %o4			! coalese with hword (if any)
+6:	addcc	%o4, %o2, %o2			! add to sum
+1:	retl					! get outta here
+	 addx	%g0, %o2, %o0			! add final carry into retval
+
+	/* Also do alignment out of band to get better cache patterns. */
+csum_partial_fix_alignment:
+	cmp	%o1, 6
+	bl	cpte - 0x4
+	 andcc	%o0, 0x2, %g0
+	be	1f
+	 andcc	%o0, 0x4, %g0
+	lduh	[%o0 + 0x00], %g2
+	sub	%o1, 2, %o1
+	add	%o0, 2, %o0
+	sll	%g2, 16, %g2
+	addcc	%g2, %o2, %o2
+	srl	%o2, 16, %g3
+	addx	%g0, %g3, %g2
+	sll	%o2, 16, %o2
+	sll	%g2, 16, %g3
+	srl	%o2, 16, %o2
+	andcc	%o0, 0x4, %g0
+	or	%g3, %o2, %o2
+1:	be	cpa
+	 andcc	%o1, 0xffffff80, %o3
+	ld	[%o0 + 0x00], %g2
+	sub	%o1, 4, %o1
+	addcc	%g2, %o2, %o2
+	add	%o0, 4, %o0
+	addx	%g0, %o2, %o2
+	b	cpa
+	 andcc	%o1, 0xffffff80, %o3
+
+	/* The common case is to get called with a nicely aligned
+	 * buffer of size 0x20.  Follow the code path for that case.
+	 */
+	.globl	csum_partial
+	EXPORT_SYMBOL(csum_partial)
+csum_partial:			/* %o0=buf, %o1=len, %o2=sum */
+	andcc	%o0, 0x7, %g0				! alignment problems?
+	bne	csum_partial_fix_alignment		! yep, handle it
+	 sethi	%hi(cpte - 8), %g7			! prepare table jmp ptr
+	andcc	%o1, 0xffffff80, %o3			! num loop iterations
+cpa:	be	3f					! none to do
+	 andcc	%o1, 0x70, %g1				! clears carry flag too
+5:	CSUM_BIGCHUNK(%o0, 0x00, %o2, %o4, %o5, %g2, %g3, %g4, %g5)
+	CSUM_BIGCHUNK(%o0, 0x20, %o2, %o4, %o5, %g2, %g3, %g4, %g5)
+	CSUM_BIGCHUNK(%o0, 0x40, %o2, %o4, %o5, %g2, %g3, %g4, %g5)
+	CSUM_BIGCHUNK(%o0, 0x60, %o2, %o4, %o5, %g2, %g3, %g4, %g5)
+	addx	%g0, %o2, %o2				! sink in final carry
+	subcc	%o3, 128, %o3				! detract from loop iters
+	bne	5b					! more to do
+	 add	%o0, 128, %o0				! advance buf ptr
+	andcc	%o1, 0x70, %g1				! clears carry flag too
+3:	be	cpte					! nope
+	 andcc	%o1, 0xf, %g0				! anything left at all?
+	srl	%g1, 1, %o4				! compute offset
+	sub	%g7, %g1, %g7				! adjust jmp ptr
+	sub	%g7, %o4, %g7				! final jmp ptr adjust
+	jmp	%g7 + %lo(cpte - 8)			! enter the table
+	 add	%o0, %g1, %o0				! advance buf ptr
+cptbl:	CSUM_LASTCHUNK(%o0, 0x68, %o2, %g2, %g3, %g4, %g5)
+	CSUM_LASTCHUNK(%o0, 0x58, %o2, %g2, %g3, %g4, %g5)
+	CSUM_LASTCHUNK(%o0, 0x48, %o2, %g2, %g3, %g4, %g5)
+	CSUM_LASTCHUNK(%o0, 0x38, %o2, %g2, %g3, %g4, %g5)
+	CSUM_LASTCHUNK(%o0, 0x28, %o2, %g2, %g3, %g4, %g5)
+	CSUM_LASTCHUNK(%o0, 0x18, %o2, %g2, %g3, %g4, %g5)
+	CSUM_LASTCHUNK(%o0, 0x08, %o2, %g2, %g3, %g4, %g5)
+	addx	%g0, %o2, %o2				! fetch final carry
+	andcc	%o1, 0xf, %g0				! anything left at all?
+cpte:	bne	csum_partial_end_cruft			! yep, handle it
+	 andcc	%o1, 8, %g0				! check how much
+cpout:	retl						! get outta here
+	 mov	%o2, %o0				! return computed csum
+
+	.globl __csum_partial_copy_start, __csum_partial_copy_end
+__csum_partial_copy_start:
+
+/* Work around cpp -rob */
+#define ALLOC #alloc
+#define EXECINSTR #execinstr
+#define EX(x,y,a,b)				\
+98:     x,y;                                    \
+        .section .fixup,ALLOC,EXECINSTR;	\
+        .align  4;                              \
+99:     ba 30f;                                 \
+         a, b, %o3;                             \
+        .section __ex_table,ALLOC;		\
+        .align  4;                              \
+        .word   98b, 99b;                       \
+        .text;                                  \
+        .align  4
+
+#define EX2(x,y)				\
+98:     x,y;                                    \
+        .section __ex_table,ALLOC;		\
+        .align  4;                              \
+        .word   98b, 30f;                       \
+        .text;                                  \
+        .align  4
+
+#define EX3(x,y)				\
+98:     x,y;                                    \
+        .section __ex_table,ALLOC;		\
+        .align  4;                              \
+        .word   98b, 96f;                       \
+        .text;                                  \
+        .align  4
+
+#define EXT(start,end,handler)			\
+        .section __ex_table,ALLOC;		\
+        .align  4;                              \
+        .word   start, 0, end, handler;         \
+        .text;                                  \
+        .align  4
+
+	/* This aligned version executes typically in 8.5 superscalar cycles, this
+	 * is the best I can do.  I say 8.5 because the final add will pair with
+	 * the next ldd in the main unrolled loop.  Thus the pipe is always full.
+	 * If you change these macros (including order of instructions),
+	 * please check the fixup code below as well.
+	 */
+#define CSUMCOPY_BIGCHUNK_ALIGNED(src, dst, sum, off, t0, t1, t2, t3, t4, t5, t6, t7)	\
+	ldd	[src + off + 0x00], t0;							\
+	ldd	[src + off + 0x08], t2;							\
+	addxcc	t0, sum, sum;								\
+	ldd	[src + off + 0x10], t4;							\
+	addxcc	t1, sum, sum;								\
+	ldd	[src + off + 0x18], t6;							\
+	addxcc	t2, sum, sum;								\
+	std	t0, [dst + off + 0x00];							\
+	addxcc	t3, sum, sum;								\
+	std	t2, [dst + off + 0x08];							\
+	addxcc	t4, sum, sum;								\
+	std	t4, [dst + off + 0x10];							\
+	addxcc	t5, sum, sum;								\
+	std	t6, [dst + off + 0x18];							\
+	addxcc	t6, sum, sum;								\
+	addxcc	t7, sum, sum;
+
+	/* 12 superscalar cycles seems to be the limit for this case,
+	 * because of this we thus do all the ldd's together to get
+	 * Viking MXCC into streaming mode.  Ho hum...
+	 */
+#define CSUMCOPY_BIGCHUNK(src, dst, sum, off, t0, t1, t2, t3, t4, t5, t6, t7)	\
+	ldd	[src + off + 0x00], t0;						\
+	ldd	[src + off + 0x08], t2;						\
+	ldd	[src + off + 0x10], t4;						\
+	ldd	[src + off + 0x18], t6;						\
+	st	t0, [dst + off + 0x00];						\
+	addxcc	t0, sum, sum;							\
+	st	t1, [dst + off + 0x04];						\
+	addxcc	t1, sum, sum;							\
+	st	t2, [dst + off + 0x08];						\
+	addxcc	t2, sum, sum;							\
+	st	t3, [dst + off + 0x0c];						\
+	addxcc	t3, sum, sum;							\
+	st	t4, [dst + off + 0x10];						\
+	addxcc	t4, sum, sum;							\
+	st	t5, [dst + off + 0x14];						\
+	addxcc	t5, sum, sum;							\
+	st	t6, [dst + off + 0x18];						\
+	addxcc	t6, sum, sum;							\
+	st	t7, [dst + off + 0x1c];						\
+	addxcc	t7, sum, sum;
+
+	/* Yuck, 6 superscalar cycles... */
+#define CSUMCOPY_LASTCHUNK(src, dst, sum, off, t0, t1, t2, t3)	\
+	ldd	[src - off - 0x08], t0;				\
+	ldd	[src - off - 0x00], t2;				\
+	addxcc	t0, sum, sum;					\
+	st	t0, [dst - off - 0x08];				\
+	addxcc	t1, sum, sum;					\
+	st	t1, [dst - off - 0x04];				\
+	addxcc	t2, sum, sum;					\
+	st	t2, [dst - off - 0x00];				\
+	addxcc	t3, sum, sum;					\
+	st	t3, [dst - off + 0x04];
+
+	/* Handle the end cruft code out of band for better cache patterns. */
+cc_end_cruft:
+	be	1f
+	 andcc	%o3, 4, %g0
+	EX(ldd	[%o0 + 0x00], %g2, and %o3, 0xf)
+	add	%o1, 8, %o1
+	addcc	%g2, %g7, %g7
+	add	%o0, 8, %o0
+	addxcc	%g3, %g7, %g7
+	EX2(st	%g2, [%o1 - 0x08])
+	addx	%g0, %g7, %g7
+	andcc	%o3, 4, %g0
+	EX2(st	%g3, [%o1 - 0x04])
+1:	be	1f
+	 andcc	%o3, 3, %o3
+	EX(ld	[%o0 + 0x00], %g2, add %o3, 4)
+	add	%o1, 4, %o1
+	addcc	%g2, %g7, %g7
+	EX2(st	%g2, [%o1 - 0x04])
+	addx	%g0, %g7, %g7
+	andcc	%o3, 3, %g0
+	add	%o0, 4, %o0
+1:	be	1f
+	 addcc	%o3, -1, %g0
+	bne	2f
+	 subcc	%o3, 2, %o3
+	b	4f
+	 or	%g0, %g0, %o4
+2:	EX(lduh	[%o0 + 0x00], %o4, add %o3, 2)
+	add	%o0, 2, %o0
+	EX2(sth	%o4, [%o1 + 0x00])
+	be	6f
+	 add	%o1, 2, %o1
+	sll	%o4, 16, %o4
+4:	EX(ldub	[%o0 + 0x00], %o5, add %g0, 1)
+	EX2(stb	%o5, [%o1 + 0x00])
+	sll	%o5, 8, %o5
+	or	%o5, %o4, %o4
+6:	addcc	%o4, %g7, %g7
+1:	retl
+	 addx	%g0, %g7, %o0
+
+	/* Also, handle the alignment code out of band. */
+cc_dword_align:
+	cmp	%g1, 16
+	bge	1f
+	 srl	%g1, 1, %o3
+2:	cmp	%o3, 0
+	be,a	ccte
+	 andcc	%g1, 0xf, %o3
+	andcc	%o3, %o0, %g0	! Check %o0 only (%o1 has the same last 2 bits)
+	be,a	2b
+	 srl	%o3, 1, %o3
+1:	andcc	%o0, 0x1, %g0
+	bne	ccslow
+	 andcc	%o0, 0x2, %g0
+	be	1f
+	 andcc	%o0, 0x4, %g0
+	EX(lduh	[%o0 + 0x00], %g4, add %g1, 0)
+	sub	%g1, 2, %g1
+	EX2(sth	%g4, [%o1 + 0x00])
+	add	%o0, 2, %o0
+	sll	%g4, 16, %g4
+	addcc	%g4, %g7, %g7
+	add	%o1, 2, %o1
+	srl	%g7, 16, %g3
+	addx	%g0, %g3, %g4
+	sll	%g7, 16, %g7
+	sll	%g4, 16, %g3
+	srl	%g7, 16, %g7
+	andcc	%o0, 0x4, %g0
+	or	%g3, %g7, %g7
+1:	be	3f
+	 andcc	%g1, 0xffffff80, %g0
+	EX(ld	[%o0 + 0x00], %g4, add %g1, 0)
+	sub	%g1, 4, %g1
+	EX2(st	%g4, [%o1 + 0x00])
+	add	%o0, 4, %o0
+	addcc	%g4, %g7, %g7
+	add	%o1, 4, %o1
+	addx	%g0, %g7, %g7
+	b	3f
+	 andcc	%g1, 0xffffff80, %g0
+
+	/* Sun, you just can't beat me, you just can't.  Stop trying,
+	 * give up.  I'm serious, I am going to kick the living shit
+	 * out of you, game over, lights out.
+	 */
+	.align	8
+	.globl	__csum_partial_copy_sparc_generic
+	EXPORT_SYMBOL(__csum_partial_copy_sparc_generic)
+__csum_partial_copy_sparc_generic:
+					/* %o0=src, %o1=dest, %g1=len, %g7=sum */
+	xor	%o0, %o1, %o4		! get changing bits
+	andcc	%o4, 3, %g0		! check for mismatched alignment
+	bne	ccslow			! better this than unaligned/fixups
+	 andcc	%o0, 7, %g0		! need to align things?
+	bne	cc_dword_align		! yes, we check for short lengths there
+	 andcc	%g1, 0xffffff80, %g0	! can we use unrolled loop?
+3:	be	3f			! nope, less than one loop remains
+	 andcc	%o1, 4, %g0		! dest aligned on 4 or 8 byte boundary?
+	be	ccdbl + 4		! 8 byte aligned, kick ass
+5:	CSUMCOPY_BIGCHUNK(%o0,%o1,%g7,0x00,%o4,%o5,%g2,%g3,%g4,%g5,%o2,%o3)
+	CSUMCOPY_BIGCHUNK(%o0,%o1,%g7,0x20,%o4,%o5,%g2,%g3,%g4,%g5,%o2,%o3)
+	CSUMCOPY_BIGCHUNK(%o0,%o1,%g7,0x40,%o4,%o5,%g2,%g3,%g4,%g5,%o2,%o3)
+	CSUMCOPY_BIGCHUNK(%o0,%o1,%g7,0x60,%o4,%o5,%g2,%g3,%g4,%g5,%o2,%o3)
+10:	EXT(5b, 10b, 20f)		! note for exception handling
+	sub	%g1, 128, %g1		! detract from length
+	addx	%g0, %g7, %g7		! add in last carry bit
+	andcc	%g1, 0xffffff80, %g0	! more to csum?
+	add	%o0, 128, %o0		! advance src ptr
+	bne	5b			! we did not go negative, continue looping
+	 add	%o1, 128, %o1		! advance dest ptr
+3:	andcc	%g1, 0x70, %o2		! can use table?
+ccmerge:be	ccte			! nope, go and check for end cruft
+	 andcc	%g1, 0xf, %o3		! get low bits of length (clears carry btw)
+	srl	%o2, 1, %o4		! begin negative offset computation
+	sethi	%hi(12f), %o5		! set up table ptr end
+	add	%o0, %o2, %o0		! advance src ptr
+	sub	%o5, %o4, %o5		! continue table calculation
+	sll	%o2, 1, %g2		! constant multiplies are fun...
+	sub	%o5, %g2, %o5		! some more adjustments
+	jmp	%o5 + %lo(12f)		! jump into it, duff style, wheee...
+	 add	%o1, %o2, %o1		! advance dest ptr (carry is clear btw)
+cctbl:	CSUMCOPY_LASTCHUNK(%o0,%o1,%g7,0x68,%g2,%g3,%g4,%g5)
+	CSUMCOPY_LASTCHUNK(%o0,%o1,%g7,0x58,%g2,%g3,%g4,%g5)
+	CSUMCOPY_LASTCHUNK(%o0,%o1,%g7,0x48,%g2,%g3,%g4,%g5)
+	CSUMCOPY_LASTCHUNK(%o0,%o1,%g7,0x38,%g2,%g3,%g4,%g5)
+	CSUMCOPY_LASTCHUNK(%o0,%o1,%g7,0x28,%g2,%g3,%g4,%g5)
+	CSUMCOPY_LASTCHUNK(%o0,%o1,%g7,0x18,%g2,%g3,%g4,%g5)
+	CSUMCOPY_LASTCHUNK(%o0,%o1,%g7,0x08,%g2,%g3,%g4,%g5)
+12:	EXT(cctbl, 12b, 22f)		! note for exception table handling
+	addx	%g0, %g7, %g7
+	andcc	%o3, 0xf, %g0		! check for low bits set
+ccte:	bne	cc_end_cruft		! something left, handle it out of band
+	 andcc	%o3, 8, %g0		! begin checks for that code
+	retl				! return
+	 mov	%g7, %o0		! give em the computed checksum
+ccdbl:	CSUMCOPY_BIGCHUNK_ALIGNED(%o0,%o1,%g7,0x00,%o4,%o5,%g2,%g3,%g4,%g5,%o2,%o3)
+	CSUMCOPY_BIGCHUNK_ALIGNED(%o0,%o1,%g7,0x20,%o4,%o5,%g2,%g3,%g4,%g5,%o2,%o3)
+	CSUMCOPY_BIGCHUNK_ALIGNED(%o0,%o1,%g7,0x40,%o4,%o5,%g2,%g3,%g4,%g5,%o2,%o3)
+	CSUMCOPY_BIGCHUNK_ALIGNED(%o0,%o1,%g7,0x60,%o4,%o5,%g2,%g3,%g4,%g5,%o2,%o3)
+11:	EXT(ccdbl, 11b, 21f)		! note for exception table handling
+	sub	%g1, 128, %g1		! detract from length
+	addx	%g0, %g7, %g7		! add in last carry bit
+	andcc	%g1, 0xffffff80, %g0	! more to csum?
+	add	%o0, 128, %o0		! advance src ptr
+	bne	ccdbl			! we did not go negative, continue looping
+	 add	%o1, 128, %o1		! advance dest ptr
+	b	ccmerge			! finish it off, above
+	 andcc	%g1, 0x70, %o2		! can use table? (clears carry btw)
+
+ccslow:	cmp	%g1, 0
+	mov	0, %g5
+	bleu	4f
+	 andcc	%o0, 1, %o5		
+	be,a	1f
+	 srl	%g1, 1, %g4		
+	sub	%g1, 1, %g1	
+	EX(ldub	[%o0], %g5, add %g1, 1)
+	add	%o0, 1, %o0	
+	EX2(stb	%g5, [%o1])
+	srl	%g1, 1, %g4
+	add	%o1, 1, %o1
+1:	cmp	%g4, 0		
+	be,a	3f
+	 andcc	%g1, 1, %g0
+	andcc	%o0, 2, %g0	
+	be,a	1f
+	 srl	%g4, 1, %g4
+	EX(lduh	[%o0], %o4, add %g1, 0)
+	sub	%g1, 2, %g1	
+	srl	%o4, 8, %g2
+	sub	%g4, 1, %g4	
+	EX2(stb	%g2, [%o1])
+	add	%o4, %g5, %g5
+	EX2(stb	%o4, [%o1 + 1])
+	add	%o0, 2, %o0	
+	srl	%g4, 1, %g4
+	add	%o1, 2, %o1
+1:	cmp	%g4, 0		
+	be,a	2f
+	 andcc	%g1, 2, %g0
+	EX3(ld	[%o0], %o4)
+5:	srl	%o4, 24, %g2
+	srl	%o4, 16, %g3
+	EX2(stb	%g2, [%o1])
+	srl	%o4, 8, %g2
+	EX2(stb	%g3, [%o1 + 1])
+	add	%o0, 4, %o0
+	EX2(stb	%g2, [%o1 + 2])
+	addcc	%o4, %g5, %g5
+	EX2(stb	%o4, [%o1 + 3])
+	addx	%g5, %g0, %g5	! I am now to lazy to optimize this (question it
+	add	%o1, 4, %o1	! is worthy). Maybe some day - with the sll/srl
+	subcc	%g4, 1, %g4	! tricks
+	bne,a	5b
+	 EX3(ld	[%o0], %o4)
+	sll	%g5, 16, %g2
+	srl	%g5, 16, %g5
+	srl	%g2, 16, %g2
+	andcc	%g1, 2, %g0
+	add	%g2, %g5, %g5 
+2:	be,a	3f		
+	 andcc	%g1, 1, %g0
+	EX(lduh	[%o0], %o4, and %g1, 3)
+	andcc	%g1, 1, %g0
+	srl	%o4, 8, %g2
+	add	%o0, 2, %o0	
+	EX2(stb	%g2, [%o1])
+	add	%g5, %o4, %g5
+	EX2(stb	%o4, [%o1 + 1])
+	add	%o1, 2, %o1
+3:	be,a	1f		
+	 sll	%g5, 16, %o4
+	EX(ldub	[%o0], %g2, add %g0, 1)
+	sll	%g2, 8, %o4	
+	EX2(stb	%g2, [%o1])
+	add	%g5, %o4, %g5
+	sll	%g5, 16, %o4
+1:	addcc	%o4, %g5, %g5
+	srl	%g5, 16, %o4
+	addx	%g0, %o4, %g5
+	orcc	%o5, %g0, %g0
+	be	4f
+	 srl	%g5, 8, %o4
+	and	%g5, 0xff, %g2
+	and	%o4, 0xff, %o4
+	sll	%g2, 8, %g2
+	or	%g2, %o4, %g5
+4:	addcc	%g7, %g5, %g7
+	retl	
+	 addx	%g0, %g7, %o0
+__csum_partial_copy_end:
+
+/* We do these strange calculations for the csum_*_from_user case only, ie.
+ * we only bother with faults on loads... */
+
+/* o2 = ((g2%20)&3)*8
+ * o3 = g1 - (g2/20)*32 - o2 */
+20:
+	cmp	%g2, 20
+	blu,a	1f
+	 and	%g2, 3, %o2
+	sub	%g1, 32, %g1
+	b	20b
+	 sub	%g2, 20, %g2
+1:
+	sll	%o2, 3, %o2
+	b	31f
+	 sub	%g1, %o2, %o3
+
+/* o2 = (!(g2 & 15) ? 0 : (((g2 & 15) + 1) & ~1)*8)
+ * o3 = g1 - (g2/16)*32 - o2 */
+21:
+	andcc	%g2, 15, %o3
+	srl	%g2, 4, %g2
+	be,a	1f
+	 clr	%o2
+	add	%o3, 1, %o3
+	and	%o3, 14, %o3
+	sll	%o3, 3, %o2
+1:
+	sll	%g2, 5, %g2
+	sub	%g1, %g2, %o3
+	b	31f
+	 sub	%o3, %o2, %o3
+
+/* o0 += (g2/10)*16 - 0x70
+ * 01 += (g2/10)*16 - 0x70
+ * o2 = (g2 % 10) ? 8 : 0
+ * o3 += 0x70 - (g2/10)*16 - o2 */
+22:
+	cmp	%g2, 10
+	blu,a	1f
+	 sub	%o0, 0x70, %o0
+	add	%o0, 16, %o0
+	add	%o1, 16, %o1
+	sub	%o3, 16, %o3
+	b	22b
+	 sub	%g2, 10, %g2
+1:
+	sub	%o1, 0x70, %o1
+	add	%o3, 0x70, %o3
+	clr	%o2
+	tst	%g2
+	bne,a	1f
+	 mov	8, %o2
+1:
+	b	31f
+	 sub	%o3, %o2, %o3
+96:
+	and	%g1, 3, %g1
+	sll	%g4, 2, %g4
+	add	%g1, %g4, %o3
+30:
+/* %o1 is dst
+ * %o3 is # bytes to zero out
+ * %o4 is faulting address
+ * %o5 is %pc where fault occurred */
+	clr	%o2
+31:
+/* %o0 is src
+ * %o1 is dst
+ * %o2 is # of bytes to copy from src to dst
+ * %o3 is # bytes to zero out
+ * %o4 is faulting address
+ * %o5 is %pc where fault occurred */
+	save	%sp, -104, %sp
+        mov     %i5, %o0
+        mov     %i7, %o1
+        mov	%i4, %o2
+        call    lookup_fault
+	 mov	%g7, %i4
+	cmp	%o0, 2
+	bne	1f	
+	 add	%g0, -EFAULT, %i5
+	tst	%i2
+	be	2f
+	 mov	%i0, %o1
+	mov	%i1, %o0
+5:
+	call	memcpy
+	 mov	%i2, %o2
+	tst	%o0
+	bne,a	2f
+	 add	%i3, %i2, %i3
+	add	%i1, %i2, %i1
+2:
+	mov	%i1, %o0
+6:
+	call	__bzero
+	 mov	%i3, %o1
+1:
+	ld	[%sp + 168], %o2		! struct_ptr of parent
+	st	%i5, [%o2]
+	ret
+	 restore
+
+        .section __ex_table,#alloc
+        .align 4
+        .word 5b,2
+	.word 6b,2
diff --git a/arch/sparc/lib/checksum_64.S b/arch/sparc/lib/checksum_64.S
new file mode 100644
index 000000000..9700ef173
--- /dev/null
+++ b/arch/sparc/lib/checksum_64.S
@@ -0,0 +1,177 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* checksum.S: Sparc V9 optimized checksum code.
+ *
+ *  Copyright(C) 1995 Linus Torvalds
+ *  Copyright(C) 1995 Miguel de Icaza
+ *  Copyright(C) 1996, 2000 David S. Miller
+ *  Copyright(C) 1997 Jakub Jelinek
+ *
+ * derived from:
+ *	Linux/Alpha checksum c-code
+ *      Linux/ix86 inline checksum assembly
+ *      RFC1071 Computing the Internet Checksum (esp. Jacobsons m68k code)
+ *	David Mosberger-Tang for optimized reference c-code
+ *	BSD4.4 portable checksum routine
+ */
+
+#include <asm/export.h>
+	.text
+
+csum_partial_fix_alignment:
+	/* We checked for zero length already, so there must be
+	 * at least one byte.
+	 */
+	be,pt		%icc, 1f
+	 nop
+	ldub		[%o0 + 0x00], %o4
+	add		%o0, 1, %o0
+	sub		%o1, 1, %o1
+1:	andcc		%o0, 0x2, %g0
+	be,pn		%icc, csum_partial_post_align
+	 cmp		%o1, 2
+	blu,pn		%icc, csum_partial_end_cruft
+	 nop
+	lduh		[%o0 + 0x00], %o5
+	add		%o0, 2, %o0
+	sub		%o1, 2, %o1
+	ba,pt		%xcc, csum_partial_post_align
+	 add		%o5, %o4, %o4
+
+	.align		32
+	.globl		csum_partial
+	.type		csum_partial,#function
+	EXPORT_SYMBOL(csum_partial)
+csum_partial:		/* %o0=buff, %o1=len, %o2=sum */
+	prefetch	[%o0 + 0x000], #n_reads
+	clr		%o4
+	prefetch	[%o0 + 0x040], #n_reads
+	brz,pn		%o1, csum_partial_finish
+	 andcc		%o0, 0x3, %g0
+
+	/* We "remember" whether the lowest bit in the address
+	 * was set in %g7.  Because if it is, we have to swap
+	 * upper and lower 8 bit fields of the sum we calculate.
+	*/
+	bne,pn		%icc, csum_partial_fix_alignment
+	 andcc		%o0, 0x1, %g7
+
+csum_partial_post_align:
+	prefetch	[%o0 + 0x080], #n_reads
+	andncc		%o1, 0x3f, %o3
+
+	prefetch	[%o0 + 0x0c0], #n_reads
+	sub		%o1, %o3, %o1
+	brz,pn		%o3, 2f
+	 prefetch	[%o0 + 0x100], #n_reads
+
+	/* So that we don't need to use the non-pairing
+	 * add-with-carry instructions we accumulate 32-bit
+	 * values into a 64-bit register.  At the end of the
+	 * loop we fold it down to 32-bits and so on.
+	 */
+	prefetch	[%o0 + 0x140], #n_reads
+1:	lduw		[%o0 + 0x00], %o5
+	lduw		[%o0 + 0x04], %g1
+	lduw		[%o0 + 0x08], %g2
+	add		%o4, %o5, %o4
+	lduw		[%o0 + 0x0c], %g3
+	add		%o4, %g1, %o4
+	lduw		[%o0 + 0x10], %o5
+	add		%o4, %g2, %o4
+	lduw		[%o0 + 0x14], %g1
+	add		%o4, %g3, %o4
+	lduw		[%o0 + 0x18], %g2
+	add		%o4, %o5, %o4
+	lduw		[%o0 + 0x1c], %g3
+	add		%o4, %g1, %o4
+	lduw		[%o0 + 0x20], %o5
+	add		%o4, %g2, %o4
+	lduw		[%o0 + 0x24], %g1
+	add		%o4, %g3, %o4
+	lduw		[%o0 + 0x28], %g2
+	add		%o4, %o5, %o4
+	lduw		[%o0 + 0x2c], %g3
+	add		%o4, %g1, %o4
+	lduw		[%o0 + 0x30], %o5
+	add		%o4, %g2, %o4
+	lduw		[%o0 + 0x34], %g1
+	add		%o4, %g3, %o4
+	lduw		[%o0 + 0x38], %g2
+	add		%o4, %o5, %o4
+	lduw		[%o0 + 0x3c], %g3
+	add		%o4, %g1, %o4
+	prefetch	[%o0 + 0x180], #n_reads
+	add		%o4, %g2, %o4
+	subcc		%o3, 0x40, %o3
+	add		%o0, 0x40, %o0
+	bne,pt		%icc, 1b
+	 add		%o4, %g3, %o4
+
+2:	and		%o1, 0x3c, %o3
+	brz,pn		%o3, 2f
+	 sub		%o1, %o3, %o1
+1:	lduw		[%o0 + 0x00], %o5
+	subcc		%o3, 0x4, %o3
+	add		%o0, 0x4, %o0
+	bne,pt		%icc, 1b
+	 add		%o4, %o5, %o4
+
+2:
+	/* fold 64-->32 */
+	srlx		%o4, 32, %o5
+	srl		%o4, 0, %o4
+	add		%o4, %o5, %o4
+	srlx		%o4, 32, %o5
+	srl		%o4, 0, %o4
+	add		%o4, %o5, %o4
+
+	/* fold 32-->16 */
+	sethi		%hi(0xffff0000), %g1
+	srl		%o4, 16, %o5
+	andn		%o4, %g1, %g2
+	add		%o5, %g2, %o4
+	srl		%o4, 16, %o5
+	andn		%o4, %g1, %g2
+	add		%o5, %g2, %o4
+
+csum_partial_end_cruft:
+	/* %o4 has the 16-bit sum we have calculated so-far.  */
+	cmp		%o1, 2
+	blu,pt		%icc, 1f
+	 nop
+	lduh		[%o0 + 0x00], %o5
+	sub		%o1, 2, %o1
+	add		%o0, 2, %o0
+	add		%o4, %o5, %o4
+1:	brz,pt		%o1, 1f
+	 nop
+	ldub		[%o0 + 0x00], %o5
+	sub		%o1, 1, %o1
+	add		%o0, 1, %o0
+	sllx		%o5, 8, %o5
+	add		%o4, %o5, %o4
+1:
+	/* fold 32-->16 */
+	sethi		%hi(0xffff0000), %g1
+	srl		%o4, 16, %o5
+	andn		%o4, %g1, %g2
+	add		%o5, %g2, %o4
+	srl		%o4, 16, %o5
+	andn		%o4, %g1, %g2
+	add		%o5, %g2, %o4
+
+1:	brz,pt		%g7, 1f
+	 nop
+
+	/* We started with an odd byte, byte-swap the result.  */
+	srl		%o4, 8, %o5
+	and		%o4, 0xff, %g1
+	sll		%g1, 8, %g1
+	or		%o5, %g1, %o4
+
+1:	addcc		%o2, %o4, %o2
+	addc		%g0, %o2, %o2
+
+csum_partial_finish:
+	retl
+	 srl		%o2, 0, %o0
diff --git a/arch/sparc/lib/clear_page.S b/arch/sparc/lib/clear_page.S
new file mode 100644
index 000000000..8a6c783a6
--- /dev/null
+++ b/arch/sparc/lib/clear_page.S
@@ -0,0 +1,107 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* clear_page.S: UltraSparc optimized clear page.
+ *
+ * Copyright (C) 1996, 1998, 1999, 2000, 2004 David S. Miller (davem@redhat.com)
+ * Copyright (C) 1997 Jakub Jelinek (jakub@redhat.com)
+ */
+
+#include <asm/visasm.h>
+#include <asm/thread_info.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/spitfire.h>
+#include <asm/head.h>
+#include <asm/export.h>
+
+	/* What we used to do was lock a TLB entry into a specific
+	 * TLB slot, clear the page with interrupts disabled, then
+	 * restore the original TLB entry.  This was great for
+	 * disturbing the TLB as little as possible, but it meant
+	 * we had to keep interrupts disabled for a long time.
+	 *
+	 * Now, we simply use the normal TLB loading mechanism,
+	 * and this makes the cpu choose a slot all by itself.
+	 * Then we do a normal TLB flush on exit.  We need only
+	 * disable preemption during the clear.
+	 */
+
+	.text
+
+	.globl		_clear_page
+	EXPORT_SYMBOL(_clear_page)
+_clear_page:		/* %o0=dest */
+	ba,pt		%xcc, clear_page_common
+	 clr		%o4
+
+	/* This thing is pretty important, it shows up
+	 * on the profiles via do_anonymous_page().
+	 */
+	.align		32
+	.globl		clear_user_page
+	EXPORT_SYMBOL(clear_user_page)
+clear_user_page:	/* %o0=dest, %o1=vaddr */
+	lduw		[%g6 + TI_PRE_COUNT], %o2
+	sethi		%hi(PAGE_OFFSET), %g2
+	sethi		%hi(PAGE_SIZE), %o4
+
+	ldx		[%g2 + %lo(PAGE_OFFSET)], %g2
+	sethi		%hi(PAGE_KERNEL_LOCKED), %g3
+
+	ldx		[%g3 + %lo(PAGE_KERNEL_LOCKED)], %g3
+	sub		%o0, %g2, %g1		! paddr
+
+	and		%o1, %o4, %o0		! vaddr D-cache alias bit
+
+	or		%g1, %g3, %g1		! TTE data
+	sethi		%hi(TLBTEMP_BASE), %o3
+
+	add		%o2, 1, %o4
+	add		%o0, %o3, %o0		! TTE vaddr
+
+	/* Disable preemption.  */
+	mov		TLB_TAG_ACCESS, %g3
+	stw		%o4, [%g6 + TI_PRE_COUNT]
+
+	/* Load TLB entry.  */
+	rdpr		%pstate, %o4
+	wrpr		%o4, PSTATE_IE, %pstate
+	stxa		%o0, [%g3] ASI_DMMU
+	stxa		%g1, [%g0] ASI_DTLB_DATA_IN
+	sethi		%hi(KERNBASE), %g1
+	flush		%g1
+	wrpr		%o4, 0x0, %pstate
+
+	mov		1, %o4
+
+clear_page_common:
+	VISEntryHalf
+	membar		#StoreLoad | #StoreStore | #LoadStore
+	fzero		%f0
+	sethi		%hi(PAGE_SIZE/64), %o1
+	mov		%o0, %g1		! remember vaddr for tlbflush
+	fzero		%f2
+	or		%o1, %lo(PAGE_SIZE/64), %o1
+	faddd		%f0, %f2, %f4
+	fmuld		%f0, %f2, %f6
+	faddd		%f0, %f2, %f8
+	fmuld		%f0, %f2, %f10
+
+	faddd		%f0, %f2, %f12
+	fmuld		%f0, %f2, %f14
+1:	stda		%f0, [%o0 + %g0] ASI_BLK_P
+	subcc		%o1, 1, %o1
+	bne,pt		%icc, 1b
+	 add		%o0, 0x40, %o0
+	membar		#Sync
+	VISExitHalf
+
+	brz,pn		%o4, out
+	 nop
+
+	stxa		%g0, [%g1] ASI_DMMU_DEMAP
+	membar		#Sync
+	stw		%o2, [%g6 + TI_PRE_COUNT]
+
+out:	retl
+	 nop
+
diff --git a/arch/sparc/lib/cmpdi2.c b/arch/sparc/lib/cmpdi2.c
new file mode 100644
index 000000000..333367fe7
--- /dev/null
+++ b/arch/sparc/lib/cmpdi2.c
@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/module.h>
+
+#include "libgcc.h"
+
+word_type __cmpdi2(long long a, long long b)
+{
+	const DWunion au = {
+		.ll = a
+	};
+	const DWunion bu = {
+		.ll = b
+	};
+
+	if (au.s.high < bu.s.high)
+		return 0;
+	else if (au.s.high > bu.s.high)
+		return 2;
+
+	if ((unsigned int) au.s.low < (unsigned int) bu.s.low)
+		return 0;
+	else if ((unsigned int) au.s.low > (unsigned int) bu.s.low)
+		return 2;
+
+	return 1;
+}
+
+EXPORT_SYMBOL(__cmpdi2);
diff --git a/arch/sparc/lib/copy_in_user.S b/arch/sparc/lib/copy_in_user.S
new file mode 100644
index 000000000..66e90bf52
--- /dev/null
+++ b/arch/sparc/lib/copy_in_user.S
@@ -0,0 +1,110 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* copy_in_user.S: Copy from userspace to userspace.
+ *
+ * Copyright (C) 1999, 2000, 2004 David S. Miller (davem@redhat.com)
+ */
+
+#include <linux/linkage.h>
+#include <asm/asi.h>
+#include <asm/export.h>
+
+#define XCC xcc
+
+#define EX(x,y,z)		\
+98:	x,y;			\
+	.section __ex_table,"a";\
+	.align 4;		\
+	.word 98b, z;		\
+	.text;			\
+	.align 4;
+
+#define EX_O4(x,y) EX(x,y,__retl_o4_plus_8)
+#define EX_O2_4(x,y) EX(x,y,__retl_o2_plus_4)
+#define EX_O2_1(x,y) EX(x,y,__retl_o2_plus_1)
+
+	.register	%g2,#scratch
+	.register	%g3,#scratch
+
+	.text
+__retl_o4_plus_8:
+	add	%o4, %o2, %o4
+	retl
+	 add	%o4, 8, %o0
+__retl_o2_plus_4:
+	retl
+	 add	%o2, 4, %o0
+__retl_o2_plus_1:
+	retl
+	 add	%o2, 1, %o0
+
+	.align	32
+
+	/* Don't try to get too fancy here, just nice and
+	 * simple.  This is predominantly used for well aligned
+	 * small copies in the compat layer.  It is also used
+	 * to copy register windows around during thread cloning.
+	 */
+
+ENTRY(raw_copy_in_user)	/* %o0=dst, %o1=src, %o2=len */
+	cmp		%o2, 0
+	be,pn		%XCC, 85f
+	 or		%o0, %o1, %o3
+	cmp		%o2, 16
+	bleu,a,pn	%XCC, 80f
+	 or		%o3, %o2, %o3
+
+	/* 16 < len <= 64 */
+	andcc		%o3, 0x7, %g0
+	bne,pn		%XCC, 90f
+	 nop
+
+	andn		%o2, 0x7, %o4
+	and		%o2, 0x7, %o2
+1:	subcc		%o4, 0x8, %o4
+	EX_O4(ldxa [%o1] %asi, %o5)
+	EX_O4(stxa %o5, [%o0] %asi)
+	add		%o1, 0x8, %o1
+	bgu,pt		%XCC, 1b
+	 add		%o0, 0x8, %o0
+	andcc		%o2, 0x4, %g0
+	be,pt		%XCC, 1f
+	 nop
+	sub		%o2, 0x4, %o2
+	EX_O2_4(lduwa [%o1] %asi, %o5)
+	EX_O2_4(stwa %o5, [%o0] %asi)
+	add		%o1, 0x4, %o1
+	add		%o0, 0x4, %o0
+1:	cmp		%o2, 0
+	be,pt		%XCC, 85f
+	 nop
+	ba,pt		%xcc, 90f
+	 nop
+
+80:	/* 0 < len <= 16 */
+	andcc		%o3, 0x3, %g0
+	bne,pn		%XCC, 90f
+	 nop
+
+82:
+	subcc		%o2, 4, %o2
+	EX_O2_4(lduwa [%o1] %asi, %g1)
+	EX_O2_4(stwa %g1, [%o0] %asi)
+	add		%o1, 4, %o1
+	bgu,pt		%XCC, 82b
+	 add		%o0, 4, %o0
+
+85:	retl
+	 clr		%o0
+
+	.align	32
+90:
+	subcc		%o2, 1, %o2
+	EX_O2_1(lduba [%o1] %asi, %g1)
+	EX_O2_1(stba %g1, [%o0] %asi)
+	add		%o1, 1, %o1
+	bgu,pt		%XCC, 90b
+	 add		%o0, 1, %o0
+	retl
+	 clr		%o0
+ENDPROC(raw_copy_in_user)
+EXPORT_SYMBOL(raw_copy_in_user)
diff --git a/arch/sparc/lib/copy_page.S b/arch/sparc/lib/copy_page.S
new file mode 100644
index 000000000..c088e871e
--- /dev/null
+++ b/arch/sparc/lib/copy_page.S
@@ -0,0 +1,253 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* clear_page.S: UltraSparc optimized copy page.
+ *
+ * Copyright (C) 1996, 1998, 1999, 2000, 2004 David S. Miller (davem@redhat.com)
+ * Copyright (C) 1997 Jakub Jelinek (jakub@redhat.com)
+ */
+
+#include <asm/visasm.h>
+#include <asm/thread_info.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/spitfire.h>
+#include <asm/head.h>
+#include <asm/export.h>
+
+	/* What we used to do was lock a TLB entry into a specific
+	 * TLB slot, clear the page with interrupts disabled, then
+	 * restore the original TLB entry.  This was great for
+	 * disturbing the TLB as little as possible, but it meant
+	 * we had to keep interrupts disabled for a long time.
+	 *
+	 * Now, we simply use the normal TLB loading mechanism,
+	 * and this makes the cpu choose a slot all by itself.
+	 * Then we do a normal TLB flush on exit.  We need only
+	 * disable preemption during the clear.
+	 */
+
+#define	DCACHE_SIZE	(PAGE_SIZE * 2)
+
+#if (PAGE_SHIFT == 13)
+#define PAGE_SIZE_REM	0x80
+#elif (PAGE_SHIFT == 16)
+#define PAGE_SIZE_REM	0x100
+#else
+#error Wrong PAGE_SHIFT specified
+#endif
+
+#define TOUCH(reg0, reg1, reg2, reg3, reg4, reg5, reg6, reg7)	\
+	fsrc2	%reg0, %f48; 	fsrc2	%reg1, %f50;		\
+	fsrc2	%reg2, %f52; 	fsrc2	%reg3, %f54;		\
+	fsrc2	%reg4, %f56; 	fsrc2	%reg5, %f58;		\
+	fsrc2	%reg6, %f60; 	fsrc2	%reg7, %f62;
+
+	.text
+
+	.align		32
+	.globl		copy_user_page
+	.type		copy_user_page,#function
+	EXPORT_SYMBOL(copy_user_page)
+copy_user_page:		/* %o0=dest, %o1=src, %o2=vaddr */
+	lduw		[%g6 + TI_PRE_COUNT], %o4
+	sethi		%hi(PAGE_OFFSET), %g2
+	sethi		%hi(PAGE_SIZE), %o3
+
+	ldx		[%g2 + %lo(PAGE_OFFSET)], %g2
+	sethi		%hi(PAGE_KERNEL_LOCKED), %g3
+
+	ldx		[%g3 + %lo(PAGE_KERNEL_LOCKED)], %g3
+	sub		%o0, %g2, %g1		! dest paddr
+
+	sub		%o1, %g2, %g2		! src paddr
+
+	and		%o2, %o3, %o0		! vaddr D-cache alias bit
+	or		%g1, %g3, %g1		! dest TTE data
+
+	or		%g2, %g3, %g2		! src TTE data
+	sethi		%hi(TLBTEMP_BASE), %o3
+
+	sethi		%hi(DCACHE_SIZE), %o1
+	add		%o0, %o3, %o0		! dest TTE vaddr
+
+	add		%o4, 1, %o2
+	add		%o0, %o1, %o1		! src TTE vaddr
+
+	/* Disable preemption.  */
+	mov		TLB_TAG_ACCESS, %g3
+	stw		%o2, [%g6 + TI_PRE_COUNT]
+
+	/* Load TLB entries.  */
+	rdpr		%pstate, %o2
+	wrpr		%o2, PSTATE_IE, %pstate
+	stxa		%o0, [%g3] ASI_DMMU
+	stxa		%g1, [%g0] ASI_DTLB_DATA_IN
+	membar		#Sync
+	stxa		%o1, [%g3] ASI_DMMU
+	stxa		%g2, [%g0] ASI_DTLB_DATA_IN
+	membar		#Sync
+	wrpr		%o2, 0x0, %pstate
+
+cheetah_copy_page_insn:
+	ba,pt		%xcc, 9f
+	 nop
+
+1:
+	VISEntryHalf
+	membar		#StoreLoad | #StoreStore | #LoadStore
+	sethi		%hi((PAGE_SIZE/64)-2), %o2
+	mov		%o0, %g1
+	prefetch	[%o1 + 0x000], #one_read
+	or		%o2, %lo((PAGE_SIZE/64)-2), %o2
+	prefetch	[%o1 + 0x040], #one_read
+	prefetch	[%o1 + 0x080], #one_read
+	prefetch	[%o1 + 0x0c0], #one_read
+	ldd		[%o1 + 0x000], %f0
+	prefetch	[%o1 + 0x100], #one_read
+	ldd		[%o1 + 0x008], %f2
+	prefetch	[%o1 + 0x140], #one_read
+	ldd		[%o1 + 0x010], %f4
+	prefetch	[%o1 + 0x180], #one_read
+	fsrc2		%f0, %f16
+	ldd		[%o1 + 0x018], %f6
+	fsrc2		%f2, %f18
+	ldd		[%o1 + 0x020], %f8
+	fsrc2		%f4, %f20
+	ldd		[%o1 + 0x028], %f10
+	fsrc2		%f6, %f22
+	ldd		[%o1 + 0x030], %f12
+	fsrc2		%f8, %f24
+	ldd		[%o1 + 0x038], %f14
+	fsrc2		%f10, %f26
+	ldd		[%o1 + 0x040], %f0
+1:	ldd		[%o1 + 0x048], %f2
+	fsrc2		%f12, %f28
+	ldd		[%o1 + 0x050], %f4
+	fsrc2		%f14, %f30
+	stda		%f16, [%o0] ASI_BLK_P
+	ldd		[%o1 + 0x058], %f6
+	fsrc2		%f0, %f16
+	ldd		[%o1 + 0x060], %f8
+	fsrc2		%f2, %f18
+	ldd		[%o1 + 0x068], %f10
+	fsrc2		%f4, %f20
+	ldd		[%o1 + 0x070], %f12
+	fsrc2		%f6, %f22
+	ldd		[%o1 + 0x078], %f14
+	fsrc2		%f8, %f24
+	ldd		[%o1 + 0x080], %f0
+	prefetch	[%o1 + 0x180], #one_read
+	fsrc2		%f10, %f26
+	subcc		%o2, 1, %o2
+	add		%o0, 0x40, %o0
+	bne,pt		%xcc, 1b
+	 add		%o1, 0x40, %o1
+
+	ldd		[%o1 + 0x048], %f2
+	fsrc2		%f12, %f28
+	ldd		[%o1 + 0x050], %f4
+	fsrc2		%f14, %f30
+	stda		%f16, [%o0] ASI_BLK_P
+	ldd		[%o1 + 0x058], %f6
+	fsrc2		%f0, %f16
+	ldd		[%o1 + 0x060], %f8
+	fsrc2		%f2, %f18
+	ldd		[%o1 + 0x068], %f10
+	fsrc2		%f4, %f20
+	ldd		[%o1 + 0x070], %f12
+	fsrc2		%f6, %f22
+	add		%o0, 0x40, %o0
+	ldd		[%o1 + 0x078], %f14
+	fsrc2		%f8, %f24
+	fsrc2		%f10, %f26
+	fsrc2		%f12, %f28
+	fsrc2		%f14, %f30
+	stda		%f16, [%o0] ASI_BLK_P
+	membar		#Sync
+	VISExitHalf
+	ba,pt		%xcc, 5f
+	 nop
+
+9:
+	VISEntry
+	ldub		[%g6 + TI_FAULT_CODE], %g3
+	mov		%o0, %g1
+	cmp		%g3, 0
+	rd		%asi, %g3
+	be,a,pt		%icc, 1f
+	 wr		%g0, ASI_BLK_P, %asi
+	wr		%g0, ASI_BLK_COMMIT_P, %asi
+1:	ldda		[%o1] ASI_BLK_P, %f0
+	add		%o1, 0x40, %o1
+	ldda		[%o1] ASI_BLK_P, %f16
+	add		%o1, 0x40, %o1
+	sethi		%hi(PAGE_SIZE), %o2
+1:	TOUCH(f0, f2, f4, f6, f8, f10, f12, f14)
+	ldda		[%o1] ASI_BLK_P, %f32
+	stda		%f48, [%o0] %asi
+	add		%o1, 0x40, %o1
+	sub		%o2, 0x40, %o2
+	add		%o0, 0x40, %o0
+	TOUCH(f16, f18, f20, f22, f24, f26, f28, f30)
+	ldda		[%o1] ASI_BLK_P, %f0
+	stda		%f48, [%o0] %asi
+	add		%o1, 0x40, %o1
+	sub		%o2, 0x40, %o2
+	add		%o0, 0x40, %o0
+	TOUCH(f32, f34, f36, f38, f40, f42, f44, f46)
+	ldda		[%o1] ASI_BLK_P, %f16
+	stda		%f48, [%o0] %asi
+	sub		%o2, 0x40, %o2
+	add		%o1, 0x40, %o1
+	cmp		%o2, PAGE_SIZE_REM
+	bne,pt		%xcc, 1b
+	 add		%o0, 0x40, %o0
+#if (PAGE_SHIFT == 16)
+	TOUCH(f0, f2, f4, f6, f8, f10, f12, f14)
+	ldda		[%o1] ASI_BLK_P, %f32
+	stda		%f48, [%o0] %asi
+	add		%o1, 0x40, %o1
+	sub		%o2, 0x40, %o2
+	add		%o0, 0x40, %o0
+	TOUCH(f16, f18, f20, f22, f24, f26, f28, f30)
+	ldda		[%o1] ASI_BLK_P, %f0
+	stda		%f48, [%o0] %asi
+	add		%o1, 0x40, %o1
+	sub		%o2, 0x40, %o2
+	add		%o0, 0x40, %o0
+	membar		#Sync
+	stda		%f32, [%o0] %asi
+	add		%o0, 0x40, %o0
+	stda		%f0, [%o0] %asi
+#else
+	membar		#Sync
+	stda		%f0, [%o0] %asi
+	add		%o0, 0x40, %o0
+	stda		%f16, [%o0] %asi
+#endif
+	membar		#Sync
+	wr		%g3, 0x0, %asi
+	VISExit
+
+5:
+	stxa		%g0, [%g1] ASI_DMMU_DEMAP
+	membar		#Sync
+
+	sethi		%hi(DCACHE_SIZE), %g2
+	stxa		%g0, [%g1 + %g2] ASI_DMMU_DEMAP
+	membar		#Sync
+
+	retl
+	 stw		%o4, [%g6 + TI_PRE_COUNT]
+
+	.size		copy_user_page, .-copy_user_page
+
+	.globl		cheetah_patch_copy_page
+cheetah_patch_copy_page:
+	sethi		%hi(0x01000000), %o1	! NOP
+	sethi		%hi(cheetah_copy_page_insn), %o0
+	or		%o0, %lo(cheetah_copy_page_insn), %o0
+	stw		%o1, [%o0]
+	membar		#StoreStore
+	flush		%o0
+	retl
+	 nop
diff --git a/arch/sparc/lib/copy_user.S b/arch/sparc/lib/copy_user.S
new file mode 100644
index 000000000..dc72f2b97
--- /dev/null
+++ b/arch/sparc/lib/copy_user.S
@@ -0,0 +1,485 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* copy_user.S: Sparc optimized copy_from_user and copy_to_user code.
+ *
+ *  Copyright(C) 1995 Linus Torvalds
+ *  Copyright(C) 1996 David S. Miller
+ *  Copyright(C) 1996 Eddie C. Dost
+ *  Copyright(C) 1996,1998 Jakub Jelinek
+ *
+ * derived from:
+ *	e-mail between David and Eddie.
+ *
+ * Returns 0 if successful, otherwise count of bytes not copied yet
+ */
+
+#include <asm/ptrace.h>
+#include <asm/asmmacro.h>
+#include <asm/page.h>
+#include <asm/thread_info.h>
+#include <asm/export.h>
+
+/* Work around cpp -rob */
+#define ALLOC #alloc
+#define EXECINSTR #execinstr
+#define EX(x,y,a,b) 				\
+98: 	x,y;					\
+	.section .fixup,ALLOC,EXECINSTR;	\
+	.align	4;				\
+99:	ba fixupretl;				\
+	 a, b, %g3;				\
+	.section __ex_table,ALLOC;		\
+	.align	4;				\
+	.word	98b, 99b;			\
+	.text;					\
+	.align	4
+
+#define EX2(x,y,c,d,e,a,b) 			\
+98: 	x,y;					\
+	.section .fixup,ALLOC,EXECINSTR;	\
+	.align	4;				\
+99:	c, d, e;				\
+	ba fixupretl;				\
+	 a, b, %g3;				\
+	.section __ex_table,ALLOC;		\
+	.align	4;				\
+	.word	98b, 99b;			\
+	.text;					\
+	.align	4
+
+#define EXO2(x,y) 				\
+98: 	x, y;					\
+	.section __ex_table,ALLOC;		\
+	.align	4;				\
+	.word	98b, 97f;			\
+	.text;					\
+	.align	4
+
+#define EXT(start,end,handler)			\
+	.section __ex_table,ALLOC;		\
+	.align	4;				\
+	.word	start, 0, end, handler;		\
+	.text;					\
+	.align	4
+
+/* Please do not change following macros unless you change logic used
+ * in .fixup at the end of this file as well
+ */
+
+/* Both these macros have to start with exactly the same insn */
+#define MOVE_BIGCHUNK(src, dst, offset, t0, t1, t2, t3, t4, t5, t6, t7) \
+	ldd	[%src + (offset) + 0x00], %t0; \
+	ldd	[%src + (offset) + 0x08], %t2; \
+	ldd	[%src + (offset) + 0x10], %t4; \
+	ldd	[%src + (offset) + 0x18], %t6; \
+	st	%t0, [%dst + (offset) + 0x00]; \
+	st	%t1, [%dst + (offset) + 0x04]; \
+	st	%t2, [%dst + (offset) + 0x08]; \
+	st	%t3, [%dst + (offset) + 0x0c]; \
+	st	%t4, [%dst + (offset) + 0x10]; \
+	st	%t5, [%dst + (offset) + 0x14]; \
+	st	%t6, [%dst + (offset) + 0x18]; \
+	st	%t7, [%dst + (offset) + 0x1c];
+
+#define MOVE_BIGALIGNCHUNK(src, dst, offset, t0, t1, t2, t3, t4, t5, t6, t7) \
+	ldd	[%src + (offset) + 0x00], %t0; \
+	ldd	[%src + (offset) + 0x08], %t2; \
+	ldd	[%src + (offset) + 0x10], %t4; \
+	ldd	[%src + (offset) + 0x18], %t6; \
+	std	%t0, [%dst + (offset) + 0x00]; \
+	std	%t2, [%dst + (offset) + 0x08]; \
+	std	%t4, [%dst + (offset) + 0x10]; \
+	std	%t6, [%dst + (offset) + 0x18];
+
+#define MOVE_LASTCHUNK(src, dst, offset, t0, t1, t2, t3) \
+	ldd	[%src - (offset) - 0x10], %t0; \
+	ldd	[%src - (offset) - 0x08], %t2; \
+	st	%t0, [%dst - (offset) - 0x10]; \
+	st	%t1, [%dst - (offset) - 0x0c]; \
+	st	%t2, [%dst - (offset) - 0x08]; \
+	st	%t3, [%dst - (offset) - 0x04];
+
+#define MOVE_HALFCHUNK(src, dst, offset, t0, t1, t2, t3) \
+	lduh	[%src + (offset) + 0x00], %t0; \
+	lduh	[%src + (offset) + 0x02], %t1; \
+	lduh	[%src + (offset) + 0x04], %t2; \
+	lduh	[%src + (offset) + 0x06], %t3; \
+	sth	%t0, [%dst + (offset) + 0x00]; \
+	sth	%t1, [%dst + (offset) + 0x02]; \
+	sth	%t2, [%dst + (offset) + 0x04]; \
+	sth	%t3, [%dst + (offset) + 0x06];
+
+#define MOVE_SHORTCHUNK(src, dst, offset, t0, t1) \
+	ldub	[%src - (offset) - 0x02], %t0; \
+	ldub	[%src - (offset) - 0x01], %t1; \
+	stb	%t0, [%dst - (offset) - 0x02]; \
+	stb	%t1, [%dst - (offset) - 0x01];
+
+	.text
+	.align	4
+
+	.globl  __copy_user_begin
+__copy_user_begin:
+
+	.globl	__copy_user
+	EXPORT_SYMBOL(__copy_user)
+dword_align:
+	andcc	%o1, 1, %g0
+	be	4f
+	 andcc	%o1, 2, %g0
+
+	EXO2(ldub [%o1], %g2)
+	add	%o1, 1, %o1
+	EXO2(stb %g2, [%o0])
+	sub	%o2, 1, %o2
+	bne	3f
+	 add	%o0, 1, %o0
+
+	EXO2(lduh [%o1], %g2)
+	add	%o1, 2, %o1
+	EXO2(sth %g2, [%o0])
+	sub	%o2, 2, %o2
+	b	3f
+	 add	%o0, 2, %o0
+4:
+	EXO2(lduh [%o1], %g2)
+	add	%o1, 2, %o1
+	EXO2(sth %g2, [%o0])
+	sub	%o2, 2, %o2
+	b	3f
+	 add	%o0, 2, %o0
+
+__copy_user:	/* %o0=dst %o1=src %o2=len */
+	xor	%o0, %o1, %o4
+1:
+	andcc	%o4, 3, %o5
+2:
+	bne	cannot_optimize
+	 cmp	%o2, 15
+
+	bleu	short_aligned_end
+	 andcc	%o1, 3, %g0
+
+	bne	dword_align
+3:
+	 andcc	%o1, 4, %g0
+
+	be	2f
+	 mov	%o2, %g1
+
+	EXO2(ld [%o1], %o4)
+	sub	%g1, 4, %g1
+	EXO2(st %o4, [%o0])
+	add	%o1, 4, %o1
+	add	%o0, 4, %o0
+2:
+	andcc	%g1, 0xffffff80, %g7
+	be	3f
+	 andcc	%o0, 4, %g0
+
+	be	ldd_std + 4
+5:
+	MOVE_BIGCHUNK(o1, o0, 0x00, o2, o3, o4, o5, g2, g3, g4, g5)
+	MOVE_BIGCHUNK(o1, o0, 0x20, o2, o3, o4, o5, g2, g3, g4, g5)
+	MOVE_BIGCHUNK(o1, o0, 0x40, o2, o3, o4, o5, g2, g3, g4, g5)
+	MOVE_BIGCHUNK(o1, o0, 0x60, o2, o3, o4, o5, g2, g3, g4, g5)
+80:
+	EXT(5b, 80b, 50f)
+	subcc	%g7, 128, %g7
+	add	%o1, 128, %o1
+	bne	5b
+	 add	%o0, 128, %o0
+3:
+	andcc	%g1, 0x70, %g7
+	be	copy_user_table_end
+	 andcc	%g1, 8, %g0
+
+	sethi	%hi(copy_user_table_end), %o5
+	srl	%g7, 1, %o4
+	add	%g7, %o4, %o4
+	add	%o1, %g7, %o1
+	sub	%o5, %o4, %o5
+	jmpl	%o5 + %lo(copy_user_table_end), %g0
+	 add	%o0, %g7, %o0
+
+copy_user_table:
+	MOVE_LASTCHUNK(o1, o0, 0x60, g2, g3, g4, g5)
+	MOVE_LASTCHUNK(o1, o0, 0x50, g2, g3, g4, g5)
+	MOVE_LASTCHUNK(o1, o0, 0x40, g2, g3, g4, g5)
+	MOVE_LASTCHUNK(o1, o0, 0x30, g2, g3, g4, g5)
+	MOVE_LASTCHUNK(o1, o0, 0x20, g2, g3, g4, g5)
+	MOVE_LASTCHUNK(o1, o0, 0x10, g2, g3, g4, g5)
+	MOVE_LASTCHUNK(o1, o0, 0x00, g2, g3, g4, g5)
+copy_user_table_end:
+	EXT(copy_user_table, copy_user_table_end, 51f)
+	be	copy_user_last7
+	 andcc	%g1, 4, %g0
+
+	EX(ldd	[%o1], %g2, and %g1, 0xf)
+	add	%o0, 8, %o0
+	add	%o1, 8, %o1
+	EX(st	%g2, [%o0 - 0x08], and %g1, 0xf)
+	EX2(st	%g3, [%o0 - 0x04], and %g1, 0xf, %g1, sub %g1, 4)
+copy_user_last7:
+	be	1f
+	 andcc	%g1, 2, %g0
+
+	EX(ld	[%o1], %g2, and %g1, 7)
+	add	%o1, 4, %o1
+	EX(st	%g2, [%o0], and %g1, 7)
+	add	%o0, 4, %o0
+1:
+	be	1f
+	 andcc	%g1, 1, %g0
+
+	EX(lduh	[%o1], %g2, and %g1, 3)
+	add	%o1, 2, %o1
+	EX(sth	%g2, [%o0], and %g1, 3)
+	add	%o0, 2, %o0
+1:
+	be	1f
+	 nop
+
+	EX(ldub	[%o1], %g2, add %g0, 1)
+	EX(stb	%g2, [%o0], add %g0, 1)
+1:
+	retl
+ 	 clr	%o0
+
+ldd_std:
+	MOVE_BIGALIGNCHUNK(o1, o0, 0x00, o2, o3, o4, o5, g2, g3, g4, g5)
+	MOVE_BIGALIGNCHUNK(o1, o0, 0x20, o2, o3, o4, o5, g2, g3, g4, g5)
+	MOVE_BIGALIGNCHUNK(o1, o0, 0x40, o2, o3, o4, o5, g2, g3, g4, g5)
+	MOVE_BIGALIGNCHUNK(o1, o0, 0x60, o2, o3, o4, o5, g2, g3, g4, g5)
+81:
+	EXT(ldd_std, 81b, 52f)
+	subcc	%g7, 128, %g7
+	add	%o1, 128, %o1
+	bne	ldd_std
+	 add	%o0, 128, %o0
+
+	andcc	%g1, 0x70, %g7
+	be	copy_user_table_end
+	 andcc	%g1, 8, %g0
+
+	sethi	%hi(copy_user_table_end), %o5
+	srl	%g7, 1, %o4
+	add	%g7, %o4, %o4
+	add	%o1, %g7, %o1
+	sub	%o5, %o4, %o5
+	jmpl	%o5 + %lo(copy_user_table_end), %g0
+	 add	%o0, %g7, %o0
+
+cannot_optimize:
+	bleu	short_end
+	 cmp	%o5, 2
+
+	bne	byte_chunk
+	 and	%o2, 0xfffffff0, %o3
+	 
+	andcc	%o1, 1, %g0
+	be	10f
+	 nop
+
+	EXO2(ldub [%o1], %g2)
+	add	%o1, 1, %o1
+	EXO2(stb %g2, [%o0])
+	sub	%o2, 1, %o2
+	andcc	%o2, 0xfffffff0, %o3
+	be	short_end
+	 add	%o0, 1, %o0
+10:
+	MOVE_HALFCHUNK(o1, o0, 0x00, g2, g3, g4, g5)
+	MOVE_HALFCHUNK(o1, o0, 0x08, g2, g3, g4, g5)
+82:
+	EXT(10b, 82b, 53f)
+	subcc	%o3, 0x10, %o3
+	add	%o1, 0x10, %o1
+	bne	10b
+	 add	%o0, 0x10, %o0
+	b	2f
+	 and	%o2, 0xe, %o3
+	
+byte_chunk:
+	MOVE_SHORTCHUNK(o1, o0, -0x02, g2, g3)
+	MOVE_SHORTCHUNK(o1, o0, -0x04, g2, g3)
+	MOVE_SHORTCHUNK(o1, o0, -0x06, g2, g3)
+	MOVE_SHORTCHUNK(o1, o0, -0x08, g2, g3)
+	MOVE_SHORTCHUNK(o1, o0, -0x0a, g2, g3)
+	MOVE_SHORTCHUNK(o1, o0, -0x0c, g2, g3)
+	MOVE_SHORTCHUNK(o1, o0, -0x0e, g2, g3)
+	MOVE_SHORTCHUNK(o1, o0, -0x10, g2, g3)
+83:
+	EXT(byte_chunk, 83b, 54f)
+	subcc	%o3, 0x10, %o3
+	add	%o1, 0x10, %o1
+	bne	byte_chunk
+	 add	%o0, 0x10, %o0
+
+short_end:
+	and	%o2, 0xe, %o3
+2:
+	sethi	%hi(short_table_end), %o5
+	sll	%o3, 3, %o4
+	add	%o0, %o3, %o0
+	sub	%o5, %o4, %o5
+	add	%o1, %o3, %o1
+	jmpl	%o5 + %lo(short_table_end), %g0
+	 andcc	%o2, 1, %g0
+84:
+	MOVE_SHORTCHUNK(o1, o0, 0x0c, g2, g3)
+	MOVE_SHORTCHUNK(o1, o0, 0x0a, g2, g3)
+	MOVE_SHORTCHUNK(o1, o0, 0x08, g2, g3)
+	MOVE_SHORTCHUNK(o1, o0, 0x06, g2, g3)
+	MOVE_SHORTCHUNK(o1, o0, 0x04, g2, g3)
+	MOVE_SHORTCHUNK(o1, o0, 0x02, g2, g3)
+	MOVE_SHORTCHUNK(o1, o0, 0x00, g2, g3)
+short_table_end:
+	EXT(84b, short_table_end, 55f)
+	be	1f
+	 nop
+	EX(ldub	[%o1], %g2, add %g0, 1)
+	EX(stb	%g2, [%o0], add %g0, 1)
+1:
+	retl
+ 	 clr	%o0
+
+short_aligned_end:
+	bne	short_end
+	 andcc	%o2, 8, %g0
+
+	be	1f
+	 andcc	%o2, 4, %g0
+
+	EXO2(ld	[%o1 + 0x00], %g2)
+	EXO2(ld	[%o1 + 0x04], %g3)
+	add	%o1, 8, %o1
+	EXO2(st	%g2, [%o0 + 0x00])
+	EX(st	%g3, [%o0 + 0x04], sub %o2, 4)
+	add	%o0, 8, %o0
+1:
+	b	copy_user_last7
+	 mov	%o2, %g1
+
+	.section .fixup,#alloc,#execinstr
+	.align	4
+97:
+	mov	%o2, %g3
+fixupretl:
+	retl
+	 mov	%g3, %o0
+
+/* exception routine sets %g2 to (broken_insn - first_insn)>>2 */
+50:
+/* This magic counts how many bytes are left when crash in MOVE_BIGCHUNK
+ * happens. This is derived from the amount ldd reads, st stores, etc.
+ * x = g2 % 12;
+ * g3 = g1 + g7 - ((g2 / 12) * 32 + (x < 4) ? 0 : (x - 4) * 4);
+ * o0 += (g2 / 12) * 32;
+ */
+	cmp	%g2, 12
+	add	%o0, %g7, %o0
+	bcs	1f
+	 cmp	%g2, 24
+	bcs	2f
+	 cmp	%g2, 36
+	bcs	3f
+	 nop
+	sub	%g2, 12, %g2
+	sub	%g7, 32, %g7
+3:	sub	%g2, 12, %g2
+	sub	%g7, 32, %g7
+2:	sub	%g2, 12, %g2
+	sub	%g7, 32, %g7
+1:	cmp	%g2, 4
+	bcs,a	60f
+	 clr	%g2
+	sub	%g2, 4, %g2
+	sll	%g2, 2, %g2
+60:	and	%g1, 0x7f, %g3
+	sub	%o0, %g7, %o0
+	add	%g3, %g7, %g3
+	ba	fixupretl
+	 sub	%g3, %g2, %g3
+51:
+/* i = 41 - g2; j = i % 6;
+ * g3 = (g1 & 15) + (i / 6) * 16 + (j < 4) ? (j + 1) * 4 : 16;
+ * o0 -= (i / 6) * 16 + 16;
+ */
+	neg	%g2
+	and	%g1, 0xf, %g1
+	add	%g2, 41, %g2
+	add	%o0, %g1, %o0
+1:	cmp	%g2, 6
+	bcs,a	2f
+	 cmp	%g2, 4
+	add	%g1, 16, %g1
+	b	1b
+	 sub	%g2, 6, %g2
+2:	bcc,a	2f
+	 mov	16, %g2
+	inc	%g2
+	sll	%g2, 2, %g2
+2:	add	%g1, %g2, %g3
+	ba	fixupretl
+	 sub	%o0, %g3, %o0
+52:
+/* g3 = g1 + g7 - (g2 / 8) * 32 + (g2 & 4) ? (g2 & 3) * 8 : 0;
+   o0 += (g2 / 8) * 32 */
+	andn	%g2, 7, %g4
+	add	%o0, %g7, %o0
+	andcc	%g2, 4, %g0
+	and	%g2, 3, %g2
+	sll	%g4, 2, %g4
+	sll	%g2, 3, %g2
+	bne	60b
+	 sub	%g7, %g4, %g7
+	ba	60b
+	 clr	%g2
+53:
+/* g3 = o3 + (o2 & 15) - (g2 & 8) - (g2 & 4) ? (g2 & 3) * 2 : 0;
+   o0 += (g2 & 8) */
+	and	%g2, 3, %g4
+	andcc	%g2, 4, %g0
+	and	%g2, 8, %g2
+	sll	%g4, 1, %g4
+	be	1f
+	 add	%o0, %g2, %o0
+	add	%g2, %g4, %g2
+1:	and	%o2, 0xf, %g3
+	add	%g3, %o3, %g3
+	ba	fixupretl
+	 sub	%g3, %g2, %g3
+54:
+/* g3 = o3 + (o2 & 15) - (g2 / 4) * 2 - (g2 & 2) ? (g2 & 1) : 0;
+   o0 += (g2 / 4) * 2 */
+	srl	%g2, 2, %o4
+	and	%g2, 1, %o5
+	srl	%g2, 1, %g2
+	add	%o4, %o4, %o4
+	and	%o5, %g2, %o5
+	and	%o2, 0xf, %o2
+	add	%o0, %o4, %o0
+	sub	%o3, %o5, %o3
+	sub	%o2, %o4, %o2
+	ba	fixupretl
+	 add	%o2, %o3, %g3
+55:
+/* i = 27 - g2;
+   g3 = (o2 & 1) + i / 4 * 2 + !(i & 3);
+   o0 -= i / 4 * 2 + 1 */
+	neg	%g2
+	and	%o2, 1, %o2
+	add	%g2, 27, %g2
+	srl	%g2, 2, %o5
+	andcc	%g2, 3, %g0
+	mov	1, %g2
+	add	%o5, %o5, %o5
+	be,a	1f
+	 clr	%g2
+1:	add	%g2, %o5, %g3
+	sub	%o0, %g3, %o0
+	ba	fixupretl
+	 add	%g3, %o2, %g3
+
+	.globl  __copy_user_end
+__copy_user_end:
diff --git a/arch/sparc/lib/csum_copy.S b/arch/sparc/lib/csum_copy.S
new file mode 100644
index 000000000..26c644ba3
--- /dev/null
+++ b/arch/sparc/lib/csum_copy.S
@@ -0,0 +1,314 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* csum_copy.S: Checksum+copy code for sparc64
+ *
+ * Copyright (C) 2005 David S. Miller <davem@davemloft.net>
+ */
+
+#include <asm/export.h>
+
+#ifdef __KERNEL__
+#define GLOBAL_SPARE	%g7
+#else
+#define GLOBAL_SPARE	%g5
+#endif
+
+#ifndef EX_LD
+#define EX_LD(x)	x
+#endif
+
+#ifndef EX_ST
+#define EX_ST(x)	x
+#endif
+
+#ifndef EX_RETVAL
+#define EX_RETVAL(x)	x
+#endif
+
+#ifndef LOAD
+#define LOAD(type,addr,dest)	type [addr], dest
+#endif
+
+#ifndef STORE
+#define STORE(type,src,addr)	type src, [addr]
+#endif
+
+#ifndef FUNC_NAME
+#define FUNC_NAME	csum_partial_copy_nocheck
+#endif
+
+	.register	%g2, #scratch
+	.register	%g3, #scratch
+
+	.text
+
+90:
+	/* We checked for zero length already, so there must be
+	 * at least one byte.
+	 */
+	be,pt		%icc, 1f
+	 nop
+	EX_LD(LOAD(ldub, %o0 + 0x00, %o4))
+	add		%o0, 1, %o0
+	sub		%o2, 1, %o2
+	EX_ST(STORE(stb, %o4, %o1 + 0x00))
+	add		%o1, 1, %o1
+1:	andcc		%o0, 0x2, %g0
+	be,pn		%icc, 80f
+	 cmp		%o2, 2
+	blu,pn		%icc, 60f
+	 nop
+	EX_LD(LOAD(lduh, %o0 + 0x00, %o5))
+	add		%o0, 2, %o0
+	sub		%o2, 2, %o2
+	EX_ST(STORE(sth, %o5, %o1 + 0x00))
+	add		%o1, 2, %o1
+	ba,pt		%xcc, 80f
+	 add		%o5, %o4, %o4
+
+	.globl		FUNC_NAME
+	.type		FUNC_NAME,#function
+	EXPORT_SYMBOL(FUNC_NAME)
+FUNC_NAME:		/* %o0=src, %o1=dst, %o2=len, %o3=sum */
+	LOAD(prefetch, %o0 + 0x000, #n_reads)
+	xor		%o0, %o1, %g1
+	clr		%o4
+	andcc		%g1, 0x3, %g0
+	bne,pn		%icc, 95f
+	 LOAD(prefetch, %o0 + 0x040, #n_reads)
+	
+	brz,pn		%o2, 70f
+	 andcc		%o0, 0x3, %g0
+
+	/* We "remember" whether the lowest bit in the address
+	 * was set in GLOBAL_SPARE.  Because if it is, we have to swap
+	 * upper and lower 8 bit fields of the sum we calculate.
+	*/
+	bne,pn		%icc, 90b
+	 andcc		%o0, 0x1, GLOBAL_SPARE
+
+80:
+	LOAD(prefetch, %o0 + 0x080, #n_reads)
+	andncc		%o2, 0x3f, %g3
+
+	LOAD(prefetch, %o0 + 0x0c0, #n_reads)
+	sub		%o2, %g3, %o2
+	brz,pn		%g3, 2f
+	 LOAD(prefetch, %o0 + 0x100, #n_reads)
+
+	/* So that we don't need to use the non-pairing
+	 * add-with-carry instructions we accumulate 32-bit
+	 * values into a 64-bit register.  At the end of the
+	 * loop we fold it down to 32-bits and so on.
+	 */
+	ba,pt		%xcc, 1f
+	LOAD(prefetch, %o0 + 0x140, #n_reads)
+
+	.align		32
+1:	EX_LD(LOAD(lduw, %o0 + 0x00, %o5))
+	EX_LD(LOAD(lduw, %o0 + 0x04, %g1))
+	EX_LD(LOAD(lduw, %o0 + 0x08, %g2))
+	add		%o4, %o5, %o4
+	EX_ST(STORE(stw, %o5, %o1 + 0x00))
+	EX_LD(LOAD(lduw, %o0 + 0x0c, %o5))
+	add		%o4, %g1, %o4
+	EX_ST(STORE(stw, %g1, %o1 + 0x04))
+	EX_LD(LOAD(lduw, %o0 + 0x10, %g1))
+	add		%o4, %g2, %o4
+	EX_ST(STORE(stw, %g2, %o1 + 0x08))
+	EX_LD(LOAD(lduw, %o0 + 0x14, %g2))
+	add		%o4, %o5, %o4
+	EX_ST(STORE(stw, %o5, %o1 + 0x0c))
+	EX_LD(LOAD(lduw, %o0 + 0x18, %o5))
+	add		%o4, %g1, %o4
+	EX_ST(STORE(stw, %g1, %o1 + 0x10))
+	EX_LD(LOAD(lduw, %o0 + 0x1c, %g1))
+	add		%o4, %g2, %o4
+	EX_ST(STORE(stw, %g2, %o1 + 0x14))
+	EX_LD(LOAD(lduw, %o0 + 0x20, %g2))
+	add		%o4, %o5, %o4
+	EX_ST(STORE(stw, %o5, %o1 + 0x18))
+	EX_LD(LOAD(lduw, %o0 + 0x24, %o5))
+	add		%o4, %g1, %o4
+	EX_ST(STORE(stw, %g1, %o1 + 0x1c))
+	EX_LD(LOAD(lduw, %o0 + 0x28, %g1))
+	add		%o4, %g2, %o4
+	EX_ST(STORE(stw, %g2, %o1 + 0x20))
+	EX_LD(LOAD(lduw, %o0 + 0x2c, %g2))
+	add		%o4, %o5, %o4
+	EX_ST(STORE(stw, %o5, %o1 + 0x24))
+	EX_LD(LOAD(lduw, %o0 + 0x30, %o5))
+	add		%o4, %g1, %o4
+	EX_ST(STORE(stw, %g1, %o1 + 0x28))
+	EX_LD(LOAD(lduw, %o0 + 0x34, %g1))
+	add		%o4, %g2, %o4
+	EX_ST(STORE(stw, %g2, %o1 + 0x2c))
+	EX_LD(LOAD(lduw, %o0 + 0x38, %g2))
+	add		%o4, %o5, %o4
+	EX_ST(STORE(stw, %o5, %o1 + 0x30))
+	EX_LD(LOAD(lduw, %o0 + 0x3c, %o5))
+	add		%o4, %g1, %o4
+	EX_ST(STORE(stw, %g1, %o1 + 0x34))
+	LOAD(prefetch, %o0 + 0x180, #n_reads)
+	add		%o4, %g2, %o4
+	EX_ST(STORE(stw, %g2, %o1 + 0x38))
+	subcc		%g3, 0x40, %g3
+	add		%o0, 0x40, %o0
+	add		%o4, %o5, %o4
+	EX_ST(STORE(stw, %o5, %o1 + 0x3c))
+	bne,pt		%icc, 1b
+	 add		%o1, 0x40, %o1
+
+2:	and		%o2, 0x3c, %g3
+	brz,pn		%g3, 2f
+	 sub		%o2, %g3, %o2
+1:	EX_LD(LOAD(lduw, %o0 + 0x00, %o5))
+	subcc		%g3, 0x4, %g3
+	add		%o0, 0x4, %o0
+	add		%o4, %o5, %o4
+	EX_ST(STORE(stw, %o5, %o1 + 0x00))
+	bne,pt		%icc, 1b
+	 add		%o1, 0x4, %o1
+
+2:
+	/* fold 64-->32 */
+	srlx		%o4, 32, %o5
+	srl		%o4, 0, %o4
+	add		%o4, %o5, %o4
+	srlx		%o4, 32, %o5
+	srl		%o4, 0, %o4
+	add		%o4, %o5, %o4
+
+	/* fold 32-->16 */
+	sethi		%hi(0xffff0000), %g1
+	srl		%o4, 16, %o5
+	andn		%o4, %g1, %g2
+	add		%o5, %g2, %o4
+	srl		%o4, 16, %o5
+	andn		%o4, %g1, %g2
+	add		%o5, %g2, %o4
+
+60:
+	/* %o4 has the 16-bit sum we have calculated so-far.  */
+	cmp		%o2, 2
+	blu,pt		%icc, 1f
+	 nop
+	EX_LD(LOAD(lduh, %o0 + 0x00, %o5))
+	sub		%o2, 2, %o2
+	add		%o0, 2, %o0
+	add		%o4, %o5, %o4
+	EX_ST(STORE(sth, %o5, %o1 + 0x00))
+	add		%o1, 0x2, %o1
+1:	brz,pt		%o2, 1f
+	 nop
+	EX_LD(LOAD(ldub, %o0 + 0x00, %o5))
+	sub		%o2, 1, %o2
+	add		%o0, 1, %o0
+	EX_ST(STORE(stb, %o5, %o1 + 0x00))
+	sllx		%o5, 8, %o5
+	add		%o1, 1, %o1
+	add		%o4, %o5, %o4
+1:
+	/* fold 32-->16 */
+	sethi		%hi(0xffff0000), %g1
+	srl		%o4, 16, %o5
+	andn		%o4, %g1, %g2
+	add		%o5, %g2, %o4
+	srl		%o4, 16, %o5
+	andn		%o4, %g1, %g2
+	add		%o5, %g2, %o4
+
+1:	brz,pt		GLOBAL_SPARE, 1f
+	 nop
+
+	/* We started with an odd byte, byte-swap the result.  */
+	srl		%o4, 8, %o5
+	and		%o4, 0xff, %g1
+	sll		%g1, 8, %g1
+	or		%o5, %g1, %o4
+
+1:	addcc		%o3, %o4, %o3
+	addc		%g0, %o3, %o3
+
+70:
+	retl
+	 srl		%o3, 0, %o0
+
+95:	mov		0, GLOBAL_SPARE
+	brlez,pn	%o2, 4f
+	 andcc		%o0, 1, %o5		
+	be,a,pt		%icc, 1f
+	 srl		%o2, 1, %g1		
+	sub		%o2, 1, %o2	
+	EX_LD(LOAD(ldub, %o0, GLOBAL_SPARE))
+	add		%o0, 1, %o0	
+	EX_ST(STORE(stb, GLOBAL_SPARE, %o1))
+	srl		%o2, 1, %g1
+	add		%o1, 1, %o1
+1:	brz,a,pn	%g1, 3f
+	 andcc		%o2, 1, %g0
+	andcc		%o0, 2, %g0	
+	be,a,pt		%icc, 1f
+	 srl		%g1, 1, %g1
+	EX_LD(LOAD(lduh, %o0, %o4))
+	sub		%o2, 2, %o2	
+	srl		%o4, 8, %g2
+	sub		%g1, 1, %g1	
+	EX_ST(STORE(stb, %g2, %o1))
+	add		%o4, GLOBAL_SPARE, GLOBAL_SPARE
+	EX_ST(STORE(stb, %o4, %o1 + 1))
+	add		%o0, 2, %o0	
+	srl		%g1, 1, %g1
+	add		%o1, 2, %o1
+1:	brz,a,pn	%g1, 2f		
+	 andcc		%o2, 2, %g0
+	EX_LD(LOAD(lduw, %o0, %o4))
+5:	srl		%o4, 24, %g2
+	srl		%o4, 16, %g3
+	EX_ST(STORE(stb, %g2, %o1))
+	srl		%o4, 8, %g2
+	EX_ST(STORE(stb, %g3, %o1 + 1))
+	add		%o0, 4, %o0
+	EX_ST(STORE(stb, %g2, %o1 + 2))
+	addcc		%o4, GLOBAL_SPARE, GLOBAL_SPARE
+	EX_ST(STORE(stb, %o4, %o1 + 3))
+	addc		GLOBAL_SPARE, %g0, GLOBAL_SPARE
+	add		%o1, 4, %o1
+	subcc		%g1, 1, %g1
+	bne,a,pt	%icc, 5b
+	 EX_LD(LOAD(lduw, %o0, %o4))
+	sll		GLOBAL_SPARE, 16, %g2
+	srl		GLOBAL_SPARE, 16, GLOBAL_SPARE
+	srl		%g2, 16, %g2
+	andcc		%o2, 2, %g0
+	add		%g2, GLOBAL_SPARE, GLOBAL_SPARE 
+2:	be,a,pt		%icc, 3f		
+	 andcc		%o2, 1, %g0
+	EX_LD(LOAD(lduh, %o0, %o4))
+	andcc		%o2, 1, %g0
+	srl		%o4, 8, %g2
+	add		%o0, 2, %o0	
+	EX_ST(STORE(stb, %g2, %o1))
+	add		GLOBAL_SPARE, %o4, GLOBAL_SPARE
+	EX_ST(STORE(stb, %o4, %o1 + 1))
+	add		%o1, 2, %o1
+3:	be,a,pt		%icc, 1f		
+	 sll		GLOBAL_SPARE, 16, %o4
+	EX_LD(LOAD(ldub, %o0, %g2))
+	sll		%g2, 8, %o4	
+	EX_ST(STORE(stb, %g2, %o1))
+	add		GLOBAL_SPARE, %o4, GLOBAL_SPARE
+	sll		GLOBAL_SPARE, 16, %o4
+1:	addcc		%o4, GLOBAL_SPARE, GLOBAL_SPARE
+	srl		GLOBAL_SPARE, 16, %o4
+	addc		%g0, %o4, GLOBAL_SPARE
+	brz,pt		%o5, 4f
+	 srl		GLOBAL_SPARE, 8, %o4
+	and		GLOBAL_SPARE, 0xff, %g2
+	and		%o4, 0xff, %o4
+	sll		%g2, 8, %g2
+	or		%g2, %o4, GLOBAL_SPARE
+4:	addcc		%o3, GLOBAL_SPARE, %o3
+	addc		%g0, %o3, %o0
+	retl
+	 srl		%o0, 0, %o0
+	.size		FUNC_NAME, .-FUNC_NAME
diff --git a/arch/sparc/lib/csum_copy_from_user.S b/arch/sparc/lib/csum_copy_from_user.S
new file mode 100644
index 000000000..d20b9594f
--- /dev/null
+++ b/arch/sparc/lib/csum_copy_from_user.S
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* csum_copy_from_user.S: Checksum+copy from userspace.
+ *
+ * Copyright (C) 2005 David S. Miller (davem@davemloft.net)
+ */
+
+#define EX_LD(x)		\
+98:	x;			\
+	.section .fixup, "ax";	\
+	.align 4;		\
+99:	retl;			\
+	 mov	-1, %o0;	\
+	.section __ex_table,"a";\
+	.align 4;		\
+	.word 98b, 99b;		\
+	.text;			\
+	.align 4;
+
+#define FUNC_NAME		__csum_partial_copy_from_user
+#define LOAD(type,addr,dest)	type##a [addr] %asi, dest
+
+#include "csum_copy.S"
diff --git a/arch/sparc/lib/csum_copy_to_user.S b/arch/sparc/lib/csum_copy_to_user.S
new file mode 100644
index 000000000..d71c0c81e
--- /dev/null
+++ b/arch/sparc/lib/csum_copy_to_user.S
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* csum_copy_to_user.S: Checksum+copy to userspace.
+ *
+ * Copyright (C) 2005 David S. Miller (davem@davemloft.net)
+ */
+
+#define EX_ST(x)		\
+98:	x;			\
+	.section .fixup,"ax";	\
+	.align 4;		\
+99:	retl;			\
+	 mov	-1, %o0;	\
+	.section __ex_table,"a";\
+	.align 4;		\
+	.word 98b, 99b;		\
+	.text;			\
+	.align 4;
+
+#define FUNC_NAME		__csum_partial_copy_to_user
+#define STORE(type,src,addr)	type##a src, [addr] %asi
+
+#include "csum_copy.S"
diff --git a/arch/sparc/lib/divdi3.S b/arch/sparc/lib/divdi3.S
new file mode 100644
index 000000000..a2b5a976b
--- /dev/null
+++ b/arch/sparc/lib/divdi3.S
@@ -0,0 +1,283 @@
+/* Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+
+This file is part of GNU CC.
+
+GNU CC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU CC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU CC; see the file COPYING.  If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+#include <asm/export.h>
+	.text
+	.align 4
+	.globl __divdi3
+__divdi3:
+	save %sp,-104,%sp
+	cmp %i0,0
+	bge .LL40
+	mov 0,%l4
+	mov -1,%l4
+	sub %g0,%i1,%o0
+	mov %o0,%o5
+	subcc %g0,%o0,%g0
+	sub %g0,%i0,%o0
+	subx %o0,0,%o4
+	mov %o4,%i0
+	mov %o5,%i1
+.LL40:
+	cmp %i2,0
+	bge .LL84
+	mov %i3,%o4
+	xnor %g0,%l4,%l4
+	sub %g0,%i3,%o0
+	mov %o0,%o3
+	subcc %g0,%o0,%g0
+	sub %g0,%i2,%o0
+	subx %o0,0,%o2
+	mov %o2,%i2
+	mov %o3,%i3
+	mov %i3,%o4
+.LL84:
+	cmp %i2,0
+	bne .LL45
+	mov %i1,%i3
+	cmp %o4,%i0
+	bleu .LL46
+	mov %i3,%o1
+	mov	32,%g1
+	subcc	%i0,%o4,%g0
+1:	bcs	5f
+	 addxcc %o1,%o1,%o1	! shift n1n0 and a q-bit in lsb
+	sub	%i0,%o4,%i0	! this kills msb of n
+	addx	%i0,%i0,%i0	! so this cannot give carry
+	subcc	%g1,1,%g1
+2:	bne	1b
+	 subcc	%i0,%o4,%g0
+	bcs	3f
+	 addxcc %o1,%o1,%o1	! shift n1n0 and a q-bit in lsb
+	b	3f
+	 sub	%i0,%o4,%i0	! this kills msb of n
+4:	sub	%i0,%o4,%i0
+5:	addxcc	%i0,%i0,%i0
+	bcc	2b
+	 subcc	%g1,1,%g1
+! Got carry from n.  Subtract next step to cancel this carry.
+	bne	4b
+	 addcc	%o1,%o1,%o1	! shift n1n0 and a 0-bit in lsb
+	sub	%i0,%o4,%i0
+3:	xnor	%o1,0,%o1
+	b .LL50
+	mov 0,%o2
+.LL46:
+	cmp %o4,0
+	bne .LL85
+	mov %i0,%o2
+	mov 1,%o0
+	mov 0,%o1
+	wr %g0, 0, %y
+	udiv %o0, %o1, %o0
+	mov %o0,%o4
+	mov %i0,%o2
+.LL85:
+	mov 0,%g3
+	mov	32,%g1
+	subcc	%g3,%o4,%g0
+1:	bcs	5f
+	 addxcc %o2,%o2,%o2	! shift n1n0 and a q-bit in lsb
+	sub	%g3,%o4,%g3	! this kills msb of n
+	addx	%g3,%g3,%g3	! so this cannot give carry
+	subcc	%g1,1,%g1
+2:	bne	1b
+	 subcc	%g3,%o4,%g0
+	bcs	3f
+	 addxcc %o2,%o2,%o2	! shift n1n0 and a q-bit in lsb
+	b	3f
+	 sub	%g3,%o4,%g3	! this kills msb of n
+4:	sub	%g3,%o4,%g3
+5:	addxcc	%g3,%g3,%g3
+	bcc	2b
+	 subcc	%g1,1,%g1
+! Got carry from n.  Subtract next step to cancel this carry.
+	bne	4b
+	 addcc	%o2,%o2,%o2	! shift n1n0 and a 0-bit in lsb
+	sub	%g3,%o4,%g3
+3:	xnor	%o2,0,%o2
+	mov %g3,%i0
+	mov %i3,%o1
+	mov	32,%g1
+	subcc	%i0,%o4,%g0
+1:	bcs	5f
+	 addxcc %o1,%o1,%o1	! shift n1n0 and a q-bit in lsb
+	sub	%i0,%o4,%i0	! this kills msb of n
+	addx	%i0,%i0,%i0	! so this cannot give carry
+	subcc	%g1,1,%g1
+2:	bne	1b
+	 subcc	%i0,%o4,%g0
+	bcs	3f
+	 addxcc %o1,%o1,%o1	! shift n1n0 and a q-bit in lsb
+	b	3f
+	 sub	%i0,%o4,%i0	! this kills msb of n
+4:	sub	%i0,%o4,%i0
+5:	addxcc	%i0,%i0,%i0
+	bcc	2b
+	 subcc	%g1,1,%g1
+! Got carry from n.  Subtract next step to cancel this carry.
+	bne	4b
+	 addcc	%o1,%o1,%o1	! shift n1n0 and a 0-bit in lsb
+	sub	%i0,%o4,%i0
+3:	xnor	%o1,0,%o1
+	b .LL86
+	mov %o1,%l1
+.LL45:
+	cmp %i2,%i0
+	bleu .LL51
+	sethi %hi(65535),%o0
+	b .LL78
+	mov 0,%o1
+.LL51:
+	or %o0,%lo(65535),%o0
+	cmp %i2,%o0
+	bgu .LL58
+	mov %i2,%o1
+	cmp %i2,256
+	addx %g0,-1,%o0
+	b .LL64
+	and %o0,8,%o2
+.LL58:
+	sethi %hi(16777215),%o0
+	or %o0,%lo(16777215),%o0
+	cmp %i2,%o0
+	bgu .LL64
+	mov 24,%o2
+	mov 16,%o2
+.LL64:
+	srl %o1,%o2,%o0
+	sethi %hi(__clz_tab),%o1
+	or %o1,%lo(__clz_tab),%o1
+	ldub [%o0+%o1],%o0
+	add %o0,%o2,%o0
+	mov 32,%o1
+	subcc %o1,%o0,%o3
+	bne,a .LL72
+	sub %o1,%o3,%o1
+	cmp %i0,%i2
+	bgu .LL74
+	cmp %i3,%o4
+	blu .LL78
+	mov 0,%o1
+.LL74:
+	b .LL78
+	mov 1,%o1
+.LL72:
+	sll %i2,%o3,%o2
+	srl %o4,%o1,%o0
+	or %o2,%o0,%i2
+	sll %o4,%o3,%o4
+	srl %i0,%o1,%o2
+	sll %i0,%o3,%o0
+	srl %i3,%o1,%o1
+	or %o0,%o1,%i0
+	sll %i3,%o3,%i3
+	mov %i0,%o1
+	mov	32,%g1
+	subcc	%o2,%i2,%g0
+1:	bcs	5f
+	 addxcc %o1,%o1,%o1	! shift n1n0 and a q-bit in lsb
+	sub	%o2,%i2,%o2	! this kills msb of n
+	addx	%o2,%o2,%o2	! so this cannot give carry
+	subcc	%g1,1,%g1
+2:	bne	1b
+	 subcc	%o2,%i2,%g0
+	bcs	3f
+	 addxcc %o1,%o1,%o1	! shift n1n0 and a q-bit in lsb
+	b	3f
+	 sub	%o2,%i2,%o2	! this kills msb of n
+4:	sub	%o2,%i2,%o2
+5:	addxcc	%o2,%o2,%o2
+	bcc	2b
+	 subcc	%g1,1,%g1
+! Got carry from n.  Subtract next step to cancel this carry.
+	bne	4b
+	 addcc	%o1,%o1,%o1	! shift n1n0 and a 0-bit in lsb
+	sub	%o2,%i2,%o2
+3:	xnor	%o1,0,%o1
+	mov %o2,%i0
+	wr	%g0,%o1,%y	! SPARC has 0-3 delay insn after a wr
+	sra	%o4,31,%g2	! Do not move this insn
+	and	%o1,%g2,%g2	! Do not move this insn
+	andcc	%g0,0,%g1	! Do not move this insn
+	mulscc	%g1,%o4,%g1
+	mulscc	%g1,%o4,%g1
+	mulscc	%g1,%o4,%g1
+	mulscc	%g1,%o4,%g1
+	mulscc	%g1,%o4,%g1
+	mulscc	%g1,%o4,%g1
+	mulscc	%g1,%o4,%g1
+	mulscc	%g1,%o4,%g1
+	mulscc	%g1,%o4,%g1
+	mulscc	%g1,%o4,%g1
+	mulscc	%g1,%o4,%g1
+	mulscc	%g1,%o4,%g1
+	mulscc	%g1,%o4,%g1
+	mulscc	%g1,%o4,%g1
+	mulscc	%g1,%o4,%g1
+	mulscc	%g1,%o4,%g1
+	mulscc	%g1,%o4,%g1
+	mulscc	%g1,%o4,%g1
+	mulscc	%g1,%o4,%g1
+	mulscc	%g1,%o4,%g1
+	mulscc	%g1,%o4,%g1
+	mulscc	%g1,%o4,%g1
+	mulscc	%g1,%o4,%g1
+	mulscc	%g1,%o4,%g1
+	mulscc	%g1,%o4,%g1
+	mulscc	%g1,%o4,%g1
+	mulscc	%g1,%o4,%g1
+	mulscc	%g1,%o4,%g1
+	mulscc	%g1,%o4,%g1
+	mulscc	%g1,%o4,%g1
+	mulscc	%g1,%o4,%g1
+	mulscc	%g1,%o4,%g1
+	mulscc	%g1,0,%g1
+	add	%g1,%g2,%o0
+	rd	%y,%o2
+	cmp %o0,%i0
+	bgu,a .LL78
+	add %o1,-1,%o1
+	bne,a .LL50
+	mov 0,%o2
+	cmp %o2,%i3
+	bleu .LL50
+	mov 0,%o2
+	add %o1,-1,%o1
+.LL78:
+	mov 0,%o2
+.LL50:
+	mov %o1,%l1
+.LL86:
+	mov %o2,%l0
+	mov %l0,%i0
+	mov %l1,%i1
+	cmp %l4,0
+	be .LL81
+	sub %g0,%i1,%o0
+	mov %o0,%l3
+	subcc %g0,%o0,%g0
+	sub %g0,%i0,%o0
+	subx %o0,0,%l2
+	mov %l2,%i0
+	mov %l3,%i1
+.LL81:
+	ret
+	restore
+EXPORT_SYMBOL(__divdi3)
diff --git a/arch/sparc/lib/ffs.S b/arch/sparc/lib/ffs.S
new file mode 100644
index 000000000..5a11d864f
--- /dev/null
+++ b/arch/sparc/lib/ffs.S
@@ -0,0 +1,88 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#include <linux/linkage.h>
+#include <asm/export.h>
+
+	.register	%g2,#scratch
+
+	.text
+	.align	32
+
+ENTRY(ffs)
+	brnz,pt	%o0, 1f
+	 mov	1, %o1
+	retl
+	 clr	%o0
+	nop
+	nop
+ENTRY(__ffs)
+	sllx	%o0, 32, %g1		/* 1  */
+	srlx	%o0, 32, %g2
+
+	clr	%o1			/* 2  */
+	movrz	%g1, %g2, %o0
+
+	movrz	%g1, 32, %o1		/* 3  */
+1:	clr	%o2
+
+	sllx	%o0, (64 - 16), %g1	/* 4  */
+	srlx	%o0, 16, %g2
+
+	movrz	%g1, %g2, %o0		/* 5  */
+	clr	%o3
+
+	movrz	%g1, 16, %o2		/* 6  */
+	clr	%o4
+
+	and	%o0, 0xff, %g1		/* 7  */
+	srlx	%o0, 8, %g2
+
+	movrz	%g1, %g2, %o0		/* 8  */
+	clr	%o5
+
+	movrz	%g1, 8, %o3		/* 9  */
+	add	%o2, %o1, %o2
+
+	and	%o0, 0xf, %g1		/* 10 */
+	srlx	%o0, 4, %g2
+
+	movrz	%g1, %g2, %o0		/* 11 */
+	add	%o2, %o3, %o2
+
+	movrz	%g1, 4, %o4		/* 12 */
+
+	and	%o0, 0x3, %g1		/* 13 */
+	srlx	%o0, 2, %g2
+
+	movrz	%g1, %g2, %o0		/* 14 */
+	add	%o2, %o4, %o2
+
+	movrz	%g1, 2, %o5		/* 15 */
+
+	and	%o0, 0x1, %g1		/* 16 */
+
+	add	%o2, %o5, %o2		/* 17 */
+	xor	%g1, 0x1, %g1
+
+	retl				/* 18 */
+	 add	%o2, %g1, %o0
+ENDPROC(ffs)
+ENDPROC(__ffs)
+EXPORT_SYMBOL(__ffs)
+EXPORT_SYMBOL(ffs)
+
+	.section	.popc_6insn_patch, "ax"
+	.word		ffs
+	brz,pn	%o0, 98f
+	 neg	%o0, %g1
+	xnor	%o0, %g1, %o1
+	popc	%o1, %o0
+98:	retl
+	 nop
+	.word		__ffs
+	neg	%o0, %g1
+	xnor	%o0, %g1, %o1
+	popc	%o1, %o0
+	retl
+	 sub	%o0, 1, %o0
+	nop
+	.previous
diff --git a/arch/sparc/lib/fls.S b/arch/sparc/lib/fls.S
new file mode 100644
index 000000000..06b8d300b
--- /dev/null
+++ b/arch/sparc/lib/fls.S
@@ -0,0 +1,67 @@
+/* fls.S: SPARC default fls definition.
+ *
+ * SPARC default fls definition, which follows the same algorithm as
+ * in generic fls(). This function will be boot time patched on T4
+ * and onward.
+ */
+
+#include <linux/linkage.h>
+#include <asm/export.h>
+
+	.text
+	.register	%g2, #scratch
+	.register	%g3, #scratch
+ENTRY(fls)
+	brz,pn	%o0, 6f
+	 mov	0, %o1
+	sethi	%hi(0xffff0000), %g3
+	mov	%o0, %g2
+	andcc	%o0, %g3, %g0
+	be,pt	%icc, 8f
+	 mov	32, %o1
+	sethi	%hi(0xff000000), %g3
+	andcc	%g2, %g3, %g0
+	bne,pt	%icc, 3f
+	 sethi	%hi(0xf0000000), %g3
+	sll	%o0, 8, %o0
+1:
+	add	%o1, -8, %o1
+	sra	%o0, 0, %o0
+	mov	%o0, %g2
+2:
+	sethi	%hi(0xf0000000), %g3
+3:
+	andcc	%g2, %g3, %g0
+	bne,pt	%icc, 4f
+	 sethi	%hi(0xc0000000), %g3
+	sll	%o0, 4, %o0
+	add	%o1, -4, %o1
+	sra	%o0, 0, %o0
+	mov	%o0, %g2
+4:
+	andcc	%g2, %g3, %g0
+	be,a,pt	%icc, 7f
+	 sll	%o0, 2, %o0
+5:
+	xnor	%g0, %o0, %o0
+	srl	%o0, 31, %o0
+	sub	%o1, %o0, %o1
+6:
+	jmp	%o7 + 8
+	 sra	%o1, 0, %o0
+7:
+	add	%o1, -2, %o1
+	ba,pt	%xcc, 5b
+	 sra	%o0, 0, %o0
+8:
+	sll	%o0, 16, %o0
+	sethi	%hi(0xff000000), %g3
+	sra	%o0, 0, %o0
+	mov	%o0, %g2
+	andcc	%g2, %g3, %g0
+	bne,pt	%icc, 2b
+	 mov	16, %o1
+	ba,pt	%xcc, 1b
+	 sll	%o0, 8, %o0
+ENDPROC(fls)
+EXPORT_SYMBOL(fls)
diff --git a/arch/sparc/lib/fls64.S b/arch/sparc/lib/fls64.S
new file mode 100644
index 000000000..c83e22ae9
--- /dev/null
+++ b/arch/sparc/lib/fls64.S
@@ -0,0 +1,61 @@
+/* fls64.S: SPARC default __fls definition.
+ *
+ * SPARC default __fls definition, which follows the same algorithm as
+ * in generic __fls(). This function will be boot time patched on T4
+ * and onward.
+ */
+
+#include <linux/linkage.h>
+#include <asm/export.h>
+
+	.text
+	.register	%g2, #scratch
+	.register	%g3, #scratch
+ENTRY(__fls)
+	mov	-1, %g2
+	sllx	%g2, 32, %g2
+	and	%o0, %g2, %g2
+	brnz,pt	%g2, 1f
+	 mov	63, %g1
+	sllx	%o0, 32, %o0
+	mov	31, %g1
+1:
+	mov	-1, %g2
+	sllx	%g2, 48, %g2
+	and	%o0, %g2, %g2
+	brnz,pt	%g2, 2f
+	 mov	-1, %g2
+	sllx	%o0, 16, %o0
+	add	%g1, -16, %g1
+2:
+	mov	-1, %g2
+	sllx	%g2, 56, %g2
+	and	%o0, %g2, %g2
+	brnz,pt	%g2, 3f
+	 mov	-1, %g2
+	sllx	%o0, 8, %o0
+	add	%g1, -8, %g1
+3:
+	sllx	%g2, 60, %g2
+	and	%o0, %g2, %g2
+	brnz,pt	%g2, 4f
+	 mov	-1, %g2
+	sllx	%o0, 4, %o0
+	add	%g1, -4, %g1
+4:
+	sllx	%g2, 62, %g2
+	and	%o0, %g2, %g2
+	brnz,pt	%g2, 5f
+	 mov	-1, %g3
+	sllx	%o0, 2, %o0
+	add	%g1, -2, %g1
+5:
+	mov	0, %g2
+	sllx	%g3, 63, %g3
+	and	%o0, %g3, %o0
+	movre	%o0, 1, %g2
+	sub	%g1, %g2, %g1
+	jmp	%o7+8
+	 sra	%g1, 0, %o0
+ENDPROC(__fls)
+EXPORT_SYMBOL(__fls)
diff --git a/arch/sparc/lib/hweight.S b/arch/sparc/lib/hweight.S
new file mode 100644
index 000000000..0ddbbb031
--- /dev/null
+++ b/arch/sparc/lib/hweight.S
@@ -0,0 +1,57 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#include <linux/linkage.h>
+#include <asm/export.h>
+
+	.text
+	.align	32
+ENTRY(__arch_hweight8)
+	sethi	%hi(__sw_hweight8), %g1
+	jmpl	%g1 + %lo(__sw_hweight8), %g0
+	 nop
+ENDPROC(__arch_hweight8)
+EXPORT_SYMBOL(__arch_hweight8)
+	.section	.popc_3insn_patch, "ax"
+	.word		__arch_hweight8
+	sllx		%o0, 64-8, %g1
+	retl
+	 popc		%g1, %o0
+	.previous
+
+ENTRY(__arch_hweight16)
+	sethi	%hi(__sw_hweight16), %g1
+	jmpl	%g1 + %lo(__sw_hweight16), %g0
+	 nop
+ENDPROC(__arch_hweight16)
+EXPORT_SYMBOL(__arch_hweight16)
+	.section	.popc_3insn_patch, "ax"
+	.word		__arch_hweight16
+	sllx		%o0, 64-16, %g1
+	retl
+	 popc		%g1, %o0
+	.previous
+
+ENTRY(__arch_hweight32)
+	sethi	%hi(__sw_hweight32), %g1
+	jmpl	%g1 + %lo(__sw_hweight32), %g0
+	 nop
+ENDPROC(__arch_hweight32)
+EXPORT_SYMBOL(__arch_hweight32)
+	.section	.popc_3insn_patch, "ax"
+	.word		__arch_hweight32
+	sllx		%o0, 64-32, %g1
+	retl
+	 popc		%g1, %o0
+	.previous
+
+ENTRY(__arch_hweight64)
+	sethi	%hi(__sw_hweight64), %g1
+	jmpl	%g1 + %lo(__sw_hweight64), %g0
+	 nop
+ENDPROC(__arch_hweight64)
+EXPORT_SYMBOL(__arch_hweight64)
+	.section	.popc_3insn_patch, "ax"
+	.word		__arch_hweight64
+	retl
+	 popc		%o0, %o0
+	nop
+	.previous
diff --git a/arch/sparc/lib/iomap.c b/arch/sparc/lib/iomap.c
new file mode 100644
index 000000000..f3a8cd491
--- /dev/null
+++ b/arch/sparc/lib/iomap.c
@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Implement the sparc iomap interfaces
+ */
+#include <linux/pci.h>
+#include <linux/module.h>
+#include <asm/io.h>
+
+/* Create a virtual mapping cookie for an IO port range */
+void __iomem *ioport_map(unsigned long port, unsigned int nr)
+{
+	return (void __iomem *) (unsigned long) port;
+}
+
+void ioport_unmap(void __iomem *addr)
+{
+	/* Nothing to do */
+}
+EXPORT_SYMBOL(ioport_map);
+EXPORT_SYMBOL(ioport_unmap);
+
+#ifdef CONFIG_PCI
+void pci_iounmap(struct pci_dev *dev, void __iomem * addr)
+{
+	/* nothing to do */
+}
+EXPORT_SYMBOL(pci_iounmap);
+#endif
diff --git a/arch/sparc/lib/ipcsum.S b/arch/sparc/lib/ipcsum.S
new file mode 100644
index 000000000..531d89c9d
--- /dev/null
+++ b/arch/sparc/lib/ipcsum.S
@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#include <linux/linkage.h>
+#include <asm/export.h>
+
+	.text
+ENTRY(ip_fast_csum) /* %o0 = iph, %o1 = ihl */
+	sub	%o1, 4, %g7
+	lduw	[%o0 + 0x00], %o2
+	lduw	[%o0 + 0x04], %g2
+	lduw	[%o0 + 0x08], %g3
+	addcc	%g2, %o2, %o2
+	lduw	[%o0 + 0x0c], %g2
+	addccc	%g3, %o2, %o2
+	lduw	[%o0 + 0x10], %g3
+
+	addccc	%g2, %o2, %o2
+	addc	%o2, %g0, %o2
+1:	addcc	%g3, %o2, %o2
+	add	%o0, 4, %o0
+	addccc	%o2, %g0, %o2
+	subcc	%g7, 1, %g7
+	be,a,pt	%icc, 2f
+	 sll	%o2, 16, %g2
+
+	lduw	[%o0 + 0x10], %g3
+	ba,pt	%xcc, 1b
+	 nop
+2:	addcc	%o2, %g2, %g2
+	srl	%g2, 16, %o2
+	addc	%o2, %g0, %o2
+	xnor	%g0, %o2, %o2
+	set	0xffff, %o1
+	retl
+	 and	%o2, %o1, %o0
+ENDPROC(ip_fast_csum)
+EXPORT_SYMBOL(ip_fast_csum)
diff --git a/arch/sparc/lib/libgcc.h b/arch/sparc/lib/libgcc.h
new file mode 100644
index 000000000..79845c941
--- /dev/null
+++ b/arch/sparc/lib/libgcc.h
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_LIBGCC_H
+#define __ASM_LIBGCC_H
+
+#include <asm/byteorder.h>
+
+typedef int word_type __attribute__ ((mode (__word__)));
+
+struct DWstruct {
+	int high, low;
+};
+
+typedef union
+{
+	struct DWstruct s;
+	long long ll;
+} DWunion;
+
+#endif /* __ASM_LIBGCC_H */
diff --git a/arch/sparc/lib/locks.S b/arch/sparc/lib/locks.S
new file mode 100644
index 000000000..9a1289a3f
--- /dev/null
+++ b/arch/sparc/lib/locks.S
@@ -0,0 +1,98 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * locks.S: SMP low-level lock primitives on Sparc.
+ *
+ * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1998 Anton Blanchard (anton@progsoc.uts.edu.au)
+ * Copyright (C) 1998 Jakub Jelinek   (jj@ultra.linux.cz)
+ */
+
+#include <asm/ptrace.h>
+#include <asm/psr.h>
+#include <asm/smp.h>
+#include <asm/spinlock.h>
+#include <asm/export.h>
+
+	.text
+	.align	4
+
+	/* Read/writer locks, as usual this is overly clever to make it
+	 * as fast as possible.
+	 */
+
+	/* caches... */
+___rw_read_enter_spin_on_wlock:
+	orcc	%g2, 0x0, %g0
+	be,a	___rw_read_enter
+	 ldstub	[%g1 + 3], %g2
+	b	___rw_read_enter_spin_on_wlock
+	 ldub	[%g1 + 3], %g2
+___rw_read_try_spin_on_wlock:
+	andcc	%g2, 0xff, %g0
+	be,a	___rw_read_try
+	 ldstub	[%g1 + 3], %g2
+	xnorcc	%g2, 0x0, %o0	/* if g2 is ~0, set o0 to 0 and bugger off */
+	bne,a	___rw_read_enter_spin_on_wlock
+	 ld	[%g1], %g2
+	retl
+	 mov	%g4, %o7
+___rw_read_exit_spin_on_wlock:
+	orcc	%g2, 0x0, %g0
+	be,a	___rw_read_exit
+	 ldstub	[%g1 + 3], %g2
+	b	___rw_read_exit_spin_on_wlock
+	 ldub	[%g1 + 3], %g2
+___rw_write_enter_spin_on_wlock:
+	orcc	%g2, 0x0, %g0
+	be,a	___rw_write_enter
+	 ldstub	[%g1 + 3], %g2
+	b	___rw_write_enter_spin_on_wlock
+	 ld	[%g1], %g2
+
+	.globl	___rw_read_enter
+EXPORT_SYMBOL(___rw_read_enter)
+___rw_read_enter:
+	orcc	%g2, 0x0, %g0
+	bne,a	___rw_read_enter_spin_on_wlock
+	 ldub	[%g1 + 3], %g2
+	ld	[%g1], %g2
+	add	%g2, 1, %g2
+	st	%g2, [%g1]
+	retl
+	 mov	%g4, %o7
+
+	.globl	___rw_read_exit
+EXPORT_SYMBOL(___rw_read_exit)
+___rw_read_exit:
+	orcc	%g2, 0x0, %g0
+	bne,a	___rw_read_exit_spin_on_wlock
+	 ldub	[%g1 + 3], %g2
+	ld	[%g1], %g2
+	sub	%g2, 0x1ff, %g2
+	st	%g2, [%g1]
+	retl
+	 mov	%g4, %o7
+
+	.globl	___rw_read_try
+EXPORT_SYMBOL(___rw_read_try)
+___rw_read_try:
+	orcc	%g2, 0x0, %g0
+	bne	___rw_read_try_spin_on_wlock
+	 ld	[%g1], %g2
+	add	%g2, 1, %g2
+	st	%g2, [%g1]
+	set	1, %o1
+	retl
+	 mov	%g4, %o7
+
+	.globl	___rw_write_enter
+EXPORT_SYMBOL(___rw_write_enter)
+___rw_write_enter:
+	orcc	%g2, 0x0, %g0
+	bne	___rw_write_enter_spin_on_wlock
+	 ld	[%g1], %g2
+	andncc	%g2, 0xff, %g0
+	bne,a	___rw_write_enter_spin_on_wlock
+	 stb	%g0, [%g1 + 3]
+	retl
+	 mov	%g4, %o7
diff --git a/arch/sparc/lib/lshrdi3.S b/arch/sparc/lib/lshrdi3.S
new file mode 100644
index 000000000..509ca6682
--- /dev/null
+++ b/arch/sparc/lib/lshrdi3.S
@@ -0,0 +1,30 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#include <linux/linkage.h>
+#include <asm/export.h>
+
+ENTRY(__lshrdi3)
+	cmp	%o2, 0
+	be	3f
+	 mov	0x20, %g2
+
+	sub	%g2, %o2, %g2
+	cmp	%g2, 0
+	bg	1f
+	 srl	%o0, %o2, %o4
+
+	clr	%o4
+	neg	%g2
+	b	2f
+	 srl	%o0, %g2, %o5
+1:
+	sll  %o0, %g2, %g3
+	srl  %o1, %o2, %g2
+	or  %g2, %g3, %o5
+2:
+	mov  %o4, %o0
+	mov  %o5, %o1
+3:
+	retl 
+	 nop 
+ENDPROC(__lshrdi3)
+EXPORT_SYMBOL(__lshrdi3)
diff --git a/arch/sparc/lib/mcount.S b/arch/sparc/lib/mcount.S
new file mode 100644
index 000000000..deba6fa0b
--- /dev/null
+++ b/arch/sparc/lib/mcount.S
@@ -0,0 +1,126 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2000 Anton Blanchard (anton@linuxcare.com)
+ *
+ * This file implements mcount(), which is used to collect profiling data.
+ * This can also be tweaked for kernel stack overflow detection.
+ */
+
+#include <linux/linkage.h>
+#include <asm/export.h>
+
+/*
+ * This is the main variant and is called by C code.  GCC's -pg option
+ * automatically instruments every C function with a call to this.
+ */
+
+	.text
+	.align		32
+	.globl		_mcount
+	.type		_mcount,#function
+	EXPORT_SYMBOL(_mcount)
+	.globl		mcount
+	.type		mcount,#function
+_mcount:
+mcount:
+#ifdef CONFIG_FUNCTION_TRACER
+#ifdef CONFIG_DYNAMIC_FTRACE
+	/* Do nothing, the retl/nop below is all we need.  */
+#else
+	sethi		%hi(ftrace_trace_function), %g1
+	sethi		%hi(ftrace_stub), %g2
+	ldx		[%g1 + %lo(ftrace_trace_function)], %g1
+	or		%g2, %lo(ftrace_stub), %g2
+	cmp		%g1, %g2
+	be,pn		%icc, 1f
+	 mov		%i7, %g3
+	save		%sp, -176, %sp
+	mov		%g3, %o1
+	jmpl		%g1, %o7
+	 mov		%i7, %o0
+	ret
+	 restore
+	/* not reached */
+1:
+#ifdef CONFIG_FUNCTION_GRAPH_TRACER
+	sethi		%hi(ftrace_graph_return), %g1
+	ldx		[%g1 + %lo(ftrace_graph_return)], %g3
+	cmp		%g2, %g3
+	bne,pn		%xcc, 5f
+	 sethi		%hi(ftrace_graph_entry_stub), %g2
+	sethi		%hi(ftrace_graph_entry), %g1
+	or		%g2, %lo(ftrace_graph_entry_stub), %g2
+	ldx		[%g1 + %lo(ftrace_graph_entry)], %g1
+	cmp		%g1, %g2
+	be,pt		%xcc, 2f
+	 nop
+5:	mov		%i7, %g2
+	mov		%fp, %g3
+	save		%sp, -176, %sp
+	mov		%g2, %l0
+	ba,pt		%xcc, ftrace_graph_caller
+	 mov		%g3, %l1
+#endif
+2:
+#endif
+#endif
+	retl
+	 nop
+	.size		_mcount,.-_mcount
+	.size		mcount,.-mcount
+
+#ifdef CONFIG_FUNCTION_TRACER
+	.globl		ftrace_stub
+	.type		ftrace_stub,#function
+ftrace_stub:
+	retl
+	 nop
+	.size		ftrace_stub,.-ftrace_stub
+#ifdef CONFIG_DYNAMIC_FTRACE
+	.globl		ftrace_caller
+	.type		ftrace_caller,#function
+ftrace_caller:
+	mov		%i7, %g2
+	mov		%fp, %g3
+	save		%sp, -176, %sp
+	mov		%g2, %o1
+	mov		%g2, %l0
+	mov		%g3, %l1
+	.globl		ftrace_call
+ftrace_call:
+	call		ftrace_stub
+	 mov		%i7, %o0
+#ifdef CONFIG_FUNCTION_GRAPH_TRACER
+	.globl		ftrace_graph_call
+ftrace_graph_call:
+	call		ftrace_stub
+	 nop
+#endif
+	ret
+	 restore
+#ifdef CONFIG_FUNCTION_GRAPH_TRACER
+	.size		ftrace_graph_call,.-ftrace_graph_call
+#endif
+	.size		ftrace_call,.-ftrace_call
+	.size		ftrace_caller,.-ftrace_caller
+#endif
+#endif
+
+#ifdef CONFIG_FUNCTION_GRAPH_TRACER
+ENTRY(ftrace_graph_caller)
+	mov		%l0, %o0
+	mov		%i7, %o1
+	call		prepare_ftrace_return
+	 mov		%l1, %o2
+	ret
+	 restore	%o0, -8, %i7
+END(ftrace_graph_caller)
+
+ENTRY(return_to_handler)
+	save		%sp, -176, %sp
+	call		ftrace_return_to_handler
+	 mov		%fp, %o0
+	jmpl		%o0 + 8, %g0
+	 restore
+END(return_to_handler)
+#endif
diff --git a/arch/sparc/lib/memcmp.S b/arch/sparc/lib/memcmp.S
new file mode 100644
index 000000000..a18076ef5
--- /dev/null
+++ b/arch/sparc/lib/memcmp.S
@@ -0,0 +1,30 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Sparc optimized memcmp code.
+ *
+ * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ * Copyright (C) 2000, 2008 David S. Miller (davem@davemloft.net)
+ */
+
+#include <linux/linkage.h>
+#include <asm/asm.h>
+#include <asm/export.h>
+
+	.text
+ENTRY(memcmp)
+	cmp	%o2, 0
+1:	BRANCH32(be, pn, 2f)
+	 nop
+	ldub	[%o0], %g7
+	ldub	[%o1], %g3
+	sub	%o2, 1, %o2
+	add	%o0, 1, %o0
+	add	%o1, 1, %o1
+	subcc	%g7, %g3, %g3
+	BRANCH32(be, pt, 1b)
+	 cmp	%o2, 0
+	retl
+	 mov	%g3, %o0
+2:	retl
+	 mov	0, %o0
+ENDPROC(memcmp)
+EXPORT_SYMBOL(memcmp)
diff --git a/arch/sparc/lib/memcpy.S b/arch/sparc/lib/memcpy.S
new file mode 100644
index 000000000..ee823d8c9
--- /dev/null
+++ b/arch/sparc/lib/memcpy.S
@@ -0,0 +1,462 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* memcpy.S: Sparc optimized memcpy and memmove code
+ * Hand optimized from GNU libc's memcpy and memmove
+ * Copyright (C) 1991,1996 Free Software Foundation
+ * Copyright (C) 1995 Linus Torvalds (Linus.Torvalds@helsinki.fi)
+ * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
+ * Copyright (C) 1996 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#include <asm/export.h>
+#define FUNC(x) 		\
+	.globl	x;		\
+	.type	x,@function;	\
+	.align	4;		\
+x:
+
+/* Both these macros have to start with exactly the same insn */
+#define MOVE_BIGCHUNK(src, dst, offset, t0, t1, t2, t3, t4, t5, t6, t7) \
+	ldd	[%src + (offset) + 0x00], %t0; \
+	ldd	[%src + (offset) + 0x08], %t2; \
+	ldd	[%src + (offset) + 0x10], %t4; \
+	ldd	[%src + (offset) + 0x18], %t6; \
+	st	%t0, [%dst + (offset) + 0x00]; \
+	st	%t1, [%dst + (offset) + 0x04]; \
+	st	%t2, [%dst + (offset) + 0x08]; \
+	st	%t3, [%dst + (offset) + 0x0c]; \
+	st	%t4, [%dst + (offset) + 0x10]; \
+	st	%t5, [%dst + (offset) + 0x14]; \
+	st	%t6, [%dst + (offset) + 0x18]; \
+	st	%t7, [%dst + (offset) + 0x1c];
+
+#define MOVE_BIGALIGNCHUNK(src, dst, offset, t0, t1, t2, t3, t4, t5, t6, t7) \
+	ldd	[%src + (offset) + 0x00], %t0; \
+	ldd	[%src + (offset) + 0x08], %t2; \
+	ldd	[%src + (offset) + 0x10], %t4; \
+	ldd	[%src + (offset) + 0x18], %t6; \
+	std	%t0, [%dst + (offset) + 0x00]; \
+	std	%t2, [%dst + (offset) + 0x08]; \
+	std	%t4, [%dst + (offset) + 0x10]; \
+	std	%t6, [%dst + (offset) + 0x18];
+
+#define MOVE_LASTCHUNK(src, dst, offset, t0, t1, t2, t3) \
+	ldd	[%src - (offset) - 0x10], %t0; \
+	ldd	[%src - (offset) - 0x08], %t2; \
+	st	%t0, [%dst - (offset) - 0x10]; \
+	st	%t1, [%dst - (offset) - 0x0c]; \
+	st	%t2, [%dst - (offset) - 0x08]; \
+	st	%t3, [%dst - (offset) - 0x04];
+
+#define MOVE_LASTALIGNCHUNK(src, dst, offset, t0, t1, t2, t3) \
+	ldd	[%src - (offset) - 0x10], %t0; \
+	ldd	[%src - (offset) - 0x08], %t2; \
+	std	%t0, [%dst - (offset) - 0x10]; \
+	std	%t2, [%dst - (offset) - 0x08];
+
+#define MOVE_SHORTCHUNK(src, dst, offset, t0, t1) \
+	ldub	[%src - (offset) - 0x02], %t0; \
+	ldub	[%src - (offset) - 0x01], %t1; \
+	stb	%t0, [%dst - (offset) - 0x02]; \
+	stb	%t1, [%dst - (offset) - 0x01];
+
+	.text
+	.align	4
+
+FUNC(memmove)
+EXPORT_SYMBOL(memmove)
+	cmp		%o0, %o1
+	mov		%o0, %g7
+	bleu		9f
+	 sub		%o0, %o1, %o4
+
+	add		%o1, %o2, %o3
+	cmp		%o3, %o0
+	bleu		0f
+	 andcc		%o4, 3, %o5
+
+	add		%o1, %o2, %o1
+	add		%o0, %o2, %o0
+	sub		%o1, 1, %o1
+	sub		%o0, 1, %o0
+	
+1:	/* reverse_bytes */
+
+	ldub		[%o1], %o4
+	subcc		%o2, 1, %o2
+	stb		%o4, [%o0]
+	sub		%o1, 1, %o1
+	bne		1b
+	 sub		%o0, 1, %o0
+
+	retl
+	 mov		%g7, %o0
+
+/* NOTE: This code is executed just for the cases,
+         where %src (=%o1) & 3 is != 0.
+	 We need to align it to 4. So, for (%src & 3)
+	 1 we need to do ldub,lduh
+	 2 lduh
+	 3 just ldub
+         so even if it looks weird, the branches
+         are correct here. -jj
+ */
+78:	/* dword_align */
+
+	andcc		%o1, 1, %g0
+	be		4f
+	 andcc		%o1, 2, %g0
+
+	ldub		[%o1], %g2
+	add		%o1, 1, %o1
+	stb		%g2, [%o0]
+	sub		%o2, 1, %o2
+	bne		3f
+	 add		%o0, 1, %o0
+4:
+	lduh		[%o1], %g2
+	add		%o1, 2, %o1
+	sth		%g2, [%o0]
+	sub		%o2, 2, %o2
+	b		3f
+	 add		%o0, 2, %o0
+
+FUNC(memcpy)	/* %o0=dst %o1=src %o2=len */
+EXPORT_SYMBOL(memcpy)
+
+	sub		%o0, %o1, %o4
+	mov		%o0, %g7
+9:
+	andcc		%o4, 3, %o5
+0:
+	bne		86f
+	 cmp		%o2, 15
+
+	bleu		90f
+	 andcc		%o1, 3, %g0
+
+	bne		78b
+3:
+	 andcc		%o1, 4, %g0
+
+	be		2f
+	 mov		%o2, %g1
+
+	ld		[%o1], %o4
+	sub		%g1, 4, %g1
+	st		%o4, [%o0]
+	add		%o1, 4, %o1
+	add		%o0, 4, %o0
+2:
+	andcc		%g1, 0xffffff80, %g0
+	be		3f
+	 andcc		%o0, 4, %g0
+
+	be		82f + 4
+5:
+	MOVE_BIGCHUNK(o1, o0, 0x00, o2, o3, o4, o5, g2, g3, g4, g5)
+	MOVE_BIGCHUNK(o1, o0, 0x20, o2, o3, o4, o5, g2, g3, g4, g5)
+	MOVE_BIGCHUNK(o1, o0, 0x40, o2, o3, o4, o5, g2, g3, g4, g5)
+	MOVE_BIGCHUNK(o1, o0, 0x60, o2, o3, o4, o5, g2, g3, g4, g5)
+	sub		%g1, 128, %g1
+	add		%o1, 128, %o1
+	cmp		%g1, 128
+	bge		5b
+	 add		%o0, 128, %o0
+3:
+	andcc		%g1, 0x70, %g4
+	be		80f
+	 andcc		%g1, 8, %g0
+
+	sethi		%hi(80f), %o5
+	srl		%g4, 1, %o4
+	add		%g4, %o4, %o4
+	add		%o1, %g4, %o1
+	sub		%o5, %o4, %o5
+	jmpl		%o5 + %lo(80f), %g0
+	 add		%o0, %g4, %o0
+
+79:	/* memcpy_table */
+
+	MOVE_LASTCHUNK(o1, o0, 0x60, g2, g3, g4, g5)
+	MOVE_LASTCHUNK(o1, o0, 0x50, g2, g3, g4, g5)
+	MOVE_LASTCHUNK(o1, o0, 0x40, g2, g3, g4, g5)
+	MOVE_LASTCHUNK(o1, o0, 0x30, g2, g3, g4, g5)
+	MOVE_LASTCHUNK(o1, o0, 0x20, g2, g3, g4, g5)
+	MOVE_LASTCHUNK(o1, o0, 0x10, g2, g3, g4, g5)
+	MOVE_LASTCHUNK(o1, o0, 0x00, g2, g3, g4, g5)
+
+80:	/* memcpy_table_end */
+	be		81f
+	 andcc		%g1, 4, %g0
+
+	ldd		[%o1], %g2
+	add		%o0, 8, %o0
+	st		%g2, [%o0 - 0x08]
+	add		%o1, 8, %o1
+	st		%g3, [%o0 - 0x04]
+
+81:	/* memcpy_last7 */
+
+	be		1f
+	 andcc		%g1, 2, %g0
+
+	ld		[%o1], %g2
+	add		%o1, 4, %o1
+	st		%g2, [%o0]
+	add		%o0, 4, %o0
+1:
+	be		1f
+	 andcc		%g1, 1, %g0
+
+	lduh		[%o1], %g2
+	add		%o1, 2, %o1
+	sth		%g2, [%o0]
+	add		%o0, 2, %o0
+1:
+	be		1f
+	 nop
+
+	ldub		[%o1], %g2
+	stb		%g2, [%o0]
+1:
+	retl
+	 mov		%g7, %o0
+
+82:	/* ldd_std */
+	MOVE_BIGALIGNCHUNK(o1, o0, 0x00, o2, o3, o4, o5, g2, g3, g4, g5)
+	MOVE_BIGALIGNCHUNK(o1, o0, 0x20, o2, o3, o4, o5, g2, g3, g4, g5)
+	MOVE_BIGALIGNCHUNK(o1, o0, 0x40, o2, o3, o4, o5, g2, g3, g4, g5)
+	MOVE_BIGALIGNCHUNK(o1, o0, 0x60, o2, o3, o4, o5, g2, g3, g4, g5)
+	subcc		%g1, 128, %g1
+	add		%o1, 128, %o1
+	cmp		%g1, 128
+	bge		82b
+	 add		%o0, 128, %o0
+
+	andcc		%g1, 0x70, %g4
+	be		84f
+	 andcc		%g1, 8, %g0
+
+	sethi		%hi(84f), %o5
+	add		%o1, %g4, %o1
+	sub		%o5, %g4, %o5
+	jmpl		%o5 + %lo(84f), %g0
+	 add		%o0, %g4, %o0
+
+83:	/* amemcpy_table */
+
+	MOVE_LASTALIGNCHUNK(o1, o0, 0x60, g2, g3, g4, g5)
+	MOVE_LASTALIGNCHUNK(o1, o0, 0x50, g2, g3, g4, g5)
+	MOVE_LASTALIGNCHUNK(o1, o0, 0x40, g2, g3, g4, g5)
+	MOVE_LASTALIGNCHUNK(o1, o0, 0x30, g2, g3, g4, g5)
+	MOVE_LASTALIGNCHUNK(o1, o0, 0x20, g2, g3, g4, g5)
+	MOVE_LASTALIGNCHUNK(o1, o0, 0x10, g2, g3, g4, g5)
+	MOVE_LASTALIGNCHUNK(o1, o0, 0x00, g2, g3, g4, g5)
+
+84:	/* amemcpy_table_end */
+	be		85f
+	 andcc		%g1, 4, %g0
+
+	ldd		[%o1], %g2
+	add		%o0, 8, %o0
+	std		%g2, [%o0 - 0x08]
+	add		%o1, 8, %o1
+85:	/* amemcpy_last7 */
+	be		1f
+	 andcc		%g1, 2, %g0
+
+	ld		[%o1], %g2
+	add		%o1, 4, %o1
+	st		%g2, [%o0]
+	add		%o0, 4, %o0
+1:
+	be		1f
+	 andcc		%g1, 1, %g0
+
+	lduh		[%o1], %g2
+	add		%o1, 2, %o1
+	sth		%g2, [%o0]
+	add		%o0, 2, %o0
+1:
+	be		1f
+	 nop
+
+	ldub		[%o1], %g2
+	stb		%g2, [%o0]
+1:
+	retl
+	 mov		%g7, %o0
+
+86:	/* non_aligned */
+	cmp		%o2, 6
+	bleu		88f
+	 nop
+
+	save		%sp, -96, %sp
+	andcc		%i0, 3, %g0
+	be		61f
+	 andcc		%i0, 1, %g0
+	be		60f
+	 andcc		%i0, 2, %g0
+
+	ldub		[%i1], %g5
+	add		%i1, 1, %i1
+	stb		%g5, [%i0]
+	sub		%i2, 1, %i2
+	bne		61f
+	 add		%i0, 1, %i0
+60:
+	ldub		[%i1], %g3
+	add		%i1, 2, %i1
+	stb		%g3, [%i0]
+	sub		%i2, 2, %i2
+	ldub		[%i1 - 1], %g3
+	add		%i0, 2, %i0
+	stb		%g3, [%i0 - 1]
+61:
+	and		%i1, 3, %g2
+	and		%i2, 0xc, %g3
+	and		%i1, -4, %i1
+	cmp		%g3, 4
+	sll		%g2, 3, %g4
+	mov		32, %g2
+	be		4f
+	 sub		%g2, %g4, %l0
+	
+	blu		3f
+	 cmp		%g3, 0x8
+
+	be		2f
+	 srl		%i2, 2, %g3
+
+	ld		[%i1], %i3
+	add		%i0, -8, %i0
+	ld		[%i1 + 4], %i4
+	b		8f
+	 add		%g3, 1, %g3
+2:
+	ld		[%i1], %i4
+	add		%i0, -12, %i0
+	ld		[%i1 + 4], %i5
+	add		%g3, 2, %g3
+	b		9f
+	 add		%i1, -4, %i1
+3:
+	ld		[%i1], %g1
+	add		%i0, -4, %i0
+	ld		[%i1 + 4], %i3
+	srl		%i2, 2, %g3
+	b		7f
+	 add		%i1, 4, %i1
+4:
+	ld		[%i1], %i5
+	cmp		%i2, 7
+	ld		[%i1 + 4], %g1
+	srl		%i2, 2, %g3
+	bleu		10f
+	 add		%i1, 8, %i1
+
+	ld		[%i1], %i3
+	add		%g3, -1, %g3
+5:
+	sll		%i5, %g4, %g2
+	srl		%g1, %l0, %g5
+	or		%g2, %g5, %g2
+	st		%g2, [%i0]
+7:
+	ld		[%i1 + 4], %i4
+	sll		%g1, %g4, %g2
+	srl		%i3, %l0, %g5
+	or		%g2, %g5, %g2
+	st		%g2, [%i0 + 4]
+8:
+	ld		[%i1 + 8], %i5
+	sll		%i3, %g4, %g2
+	srl		%i4, %l0, %g5
+	or		%g2, %g5, %g2
+	st		%g2, [%i0 + 8]
+9:
+	ld		[%i1 + 12], %g1
+	sll		%i4, %g4, %g2
+	srl		%i5, %l0, %g5
+	addcc		%g3, -4, %g3
+	or		%g2, %g5, %g2
+	add		%i1, 16, %i1
+	st		%g2, [%i0 + 12]
+	add		%i0, 16, %i0
+	bne,a		5b
+	 ld		[%i1], %i3
+10:
+	sll		%i5, %g4, %g2
+	srl		%g1, %l0, %g5
+	srl		%l0, 3, %g3
+	or		%g2, %g5, %g2
+	sub		%i1, %g3, %i1
+	andcc		%i2, 2, %g0
+	st		%g2, [%i0]
+	be		1f
+	 andcc		%i2, 1, %g0
+
+	ldub		[%i1], %g2
+	add		%i1, 2, %i1
+	stb		%g2, [%i0 + 4]
+	add		%i0, 2, %i0
+	ldub		[%i1 - 1], %g2
+	stb		%g2, [%i0 + 3]
+1:
+	be		1f
+	 nop
+	ldub		[%i1], %g2
+	stb		%g2, [%i0 + 4]
+1:
+	ret
+	 restore	%g7, %g0, %o0
+
+88:	/* short_end */
+
+	and		%o2, 0xe, %o3
+20:
+	sethi		%hi(89f), %o5
+	sll		%o3, 3, %o4
+	add		%o0, %o3, %o0
+	sub		%o5, %o4, %o5
+	add		%o1, %o3, %o1
+	jmpl		%o5 + %lo(89f), %g0
+	 andcc		%o2, 1, %g0
+
+	MOVE_SHORTCHUNK(o1, o0, 0x0c, g2, g3)
+	MOVE_SHORTCHUNK(o1, o0, 0x0a, g2, g3)
+	MOVE_SHORTCHUNK(o1, o0, 0x08, g2, g3)
+	MOVE_SHORTCHUNK(o1, o0, 0x06, g2, g3)
+	MOVE_SHORTCHUNK(o1, o0, 0x04, g2, g3)
+	MOVE_SHORTCHUNK(o1, o0, 0x02, g2, g3)
+	MOVE_SHORTCHUNK(o1, o0, 0x00, g2, g3)
+
+89:	/* short_table_end */
+
+	be		1f
+	 nop
+
+	ldub		[%o1], %g2
+	stb		%g2, [%o0]
+1:
+	retl
+	 mov		%g7, %o0
+
+90:	/* short_aligned_end */
+	bne		88b
+	 andcc		%o2, 8, %g0
+
+	be		1f
+	 andcc		%o2, 4, %g0
+
+	ld		[%o1 + 0x00], %g2
+	ld		[%o1 + 0x04], %g3
+	add		%o1, 8, %o1
+	st		%g2, [%o0 + 0x00]
+	st		%g3, [%o0 + 0x04]
+	add		%o0, 8, %o0
+1:
+	b		81b
+	 mov		%o2, %g1
diff --git a/arch/sparc/lib/memmove.S b/arch/sparc/lib/memmove.S
new file mode 100644
index 000000000..3132b6316
--- /dev/null
+++ b/arch/sparc/lib/memmove.S
@@ -0,0 +1,62 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* memmove.S: Simple memmove implementation.
+ *
+ * Copyright (C) 1997, 2004 David S. Miller (davem@redhat.com)
+ * Copyright (C) 1996, 1997, 1998, 1999 Jakub Jelinek (jj@ultra.linux.cz)
+ */
+
+#include <linux/linkage.h>
+#include <asm/export.h>
+
+	.text
+ENTRY(memmove) /* o0=dst o1=src o2=len */
+	brz,pn		%o2, 99f
+	 mov		%o0, %g1
+
+	cmp		%o0, %o1
+	bleu,pt		%xcc, 2f
+	 add		%o1, %o2, %g7
+	cmp		%g7, %o0
+	bleu,pt		%xcc, memcpy
+	 add		%o0, %o2, %o5
+	sub		%g7, 1, %o1
+
+	sub		%o5, 1, %o0
+1:	ldub		[%o1], %g7
+	subcc		%o2, 1, %o2
+	sub		%o1, 1, %o1
+	stb		%g7, [%o0]
+	bne,pt		%icc, 1b
+	 sub		%o0, 1, %o0
+99:
+	retl
+	 mov		%g1, %o0
+
+	/* We can't just call memcpy for these memmove cases.  On some
+	 * chips the memcpy uses cache initializing stores and when dst
+	 * and src are close enough, those can clobber the source data
+	 * before we've loaded it in.
+	 */
+2:	or		%o0, %o1, %g7
+	or		%o2, %g7, %g7
+	andcc		%g7, 0x7, %g0
+	bne,pn		%xcc, 4f
+	 nop
+
+3:	ldx		[%o1], %g7
+	add		%o1, 8, %o1
+	subcc		%o2, 8, %o2
+	add		%o0, 8, %o0
+	bne,pt		%icc, 3b
+	 stx		%g7, [%o0 - 0x8]
+	ba,a,pt		%xcc, 99b
+
+4:	ldub		[%o1], %g7
+	add		%o1, 1, %o1
+	subcc		%o2, 1, %o2
+	add		%o0, 1, %o0
+	bne,pt		%icc, 4b
+	 stb		%g7, [%o0 - 0x1]
+	ba,a,pt		%xcc, 99b
+ENDPROC(memmove)
+EXPORT_SYMBOL(memmove)
diff --git a/arch/sparc/lib/memscan_32.S b/arch/sparc/lib/memscan_32.S
new file mode 100644
index 000000000..c4c2d5b3a
--- /dev/null
+++ b/arch/sparc/lib/memscan_32.S
@@ -0,0 +1,138 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * memscan.S: Optimized memscan for the Sparc.
+ *
+ * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#include <asm/export.h>
+
+/* In essence, this is just a fancy strlen. */
+
+#define LO_MAGIC 0x01010101
+#define HI_MAGIC 0x80808080
+
+	.text
+	.align	4
+	.globl	__memscan_zero, __memscan_generic
+	.globl	memscan
+EXPORT_SYMBOL(__memscan_zero)
+EXPORT_SYMBOL(__memscan_generic)
+__memscan_zero:
+	/* %o0 = addr, %o1 = size */
+	cmp	%o1, 0
+	bne,a	1f
+	 andcc	%o0, 3, %g0
+
+	retl
+	 nop
+
+1:
+	be	mzero_scan_word
+	 sethi	%hi(HI_MAGIC), %g2
+
+	ldsb	[%o0], %g3
+mzero_still_not_word_aligned:
+	cmp	%g3, 0
+	bne	1f
+	 add	%o0, 1, %o0
+
+	retl
+	 sub	%o0, 1, %o0
+
+1:
+	subcc	%o1, 1, %o1
+	bne,a	1f
+	 andcc	%o0, 3, %g0
+
+	retl
+	 nop
+
+1:
+	bne,a	mzero_still_not_word_aligned
+	 ldsb	[%o0], %g3
+
+	sethi	%hi(HI_MAGIC), %g2
+mzero_scan_word:
+	or	%g2, %lo(HI_MAGIC), %o3
+	sethi	%hi(LO_MAGIC), %g3
+	or	%g3, %lo(LO_MAGIC), %o2
+mzero_next_word:
+	ld	[%o0], %g2
+mzero_next_word_preloaded:
+	sub	%g2, %o2, %g2
+mzero_next_word_preloaded_next:
+	andcc	%g2, %o3, %g0
+	bne	mzero_byte_zero
+	 add	%o0, 4, %o0
+
+mzero_check_out_of_fuel:
+	subcc	%o1, 4, %o1
+	bg,a	1f
+	 ld	[%o0], %g2
+
+	retl
+	 nop
+
+1:
+	b	mzero_next_word_preloaded_next
+	 sub	%g2, %o2, %g2
+
+	/* Check every byte. */
+mzero_byte_zero:
+	ldsb	[%o0 - 4], %g2
+	cmp	%g2, 0
+	bne	mzero_byte_one
+	 sub	%o0, 4, %g3
+
+	retl
+	 mov	%g3, %o0
+
+mzero_byte_one:
+	ldsb	[%o0 - 3], %g2
+	cmp	%g2, 0
+	bne,a	mzero_byte_two_and_three
+	 ldsb	[%o0 - 2], %g2
+
+	retl
+	 sub	%o0, 3, %o0
+
+mzero_byte_two_and_three:
+	cmp	%g2, 0
+	bne,a	1f
+	 ldsb	[%o0 - 1], %g2
+
+	retl
+	 sub	%o0, 2, %o0
+
+1:
+	cmp	%g2, 0
+	bne,a	mzero_next_word_preloaded
+	 ld	[%o0], %g2
+
+	retl
+	 sub	%o0, 1, %o0
+
+mzero_found_it:
+	retl
+	 sub	%o0, 2, %o0
+
+memscan:
+__memscan_generic:
+	/* %o0 = addr, %o1 = c, %o2 = size */
+	cmp	%o2, 0
+	bne,a	0f
+	 ldub	[%o0], %g2
+
+	b,a	2f
+1:
+	ldub	[%o0], %g2
+0:
+	cmp	%g2, %o1
+	be	2f
+	 addcc	%o2, -1, %o2
+	bne	1b
+	 add	%o0, 1, %o0
+2:
+	retl
+	 nop
diff --git a/arch/sparc/lib/memscan_64.S b/arch/sparc/lib/memscan_64.S
new file mode 100644
index 000000000..36dd63890
--- /dev/null
+++ b/arch/sparc/lib/memscan_64.S
@@ -0,0 +1,136 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * memscan.S: Optimized memscan for Sparc64.
+ *
+ * Copyright (C) 1997,1998 Jakub Jelinek (jj@ultra.linux.cz)
+ * Copyright (C) 1998 David S. Miller (davem@redhat.com)
+ */
+
+	#include <asm/export.h>
+
+#define HI_MAGIC	0x8080808080808080
+#define LO_MAGIC	0x0101010101010101
+#define ASI_PL		0x88
+
+	.text
+	.align	32
+	.globl		__memscan_zero, __memscan_generic
+	.type		__memscan_zero,#function
+	.type		__memscan_generic,#function
+	.globl		memscan
+	EXPORT_SYMBOL(__memscan_zero)
+	EXPORT_SYMBOL(__memscan_generic)
+
+__memscan_zero:
+	/* %o0 = bufp, %o1 = size */
+	brlez,pn	%o1, szzero
+	 andcc		%o0, 7, %g0
+	be,pt		%icc, we_are_aligned
+	 sethi		%hi(HI_MAGIC), %o4
+	ldub		[%o0], %o5
+1:	subcc		%o1, 1, %o1
+	brz,pn		%o5, 10f
+	 add		%o0, 1, %o0
+
+	be,pn		%xcc, szzero
+	 andcc		%o0, 7, %g0
+	bne,a,pn	%icc, 1b
+	 ldub		[%o0], %o5
+we_are_aligned:
+	ldxa		[%o0] ASI_PL, %o5
+	or		%o4, %lo(HI_MAGIC), %o3
+	sllx		%o3, 32, %o4
+	or		%o4, %o3, %o3
+
+	srlx		%o3, 7, %o2
+msloop:
+	sub		%o1, 8, %o1
+	add		%o0, 8, %o0
+	sub		%o5, %o2, %o4
+	xor		%o4, %o5, %o4
+	andcc		%o4, %o3, %g3
+	bne,pn		%xcc, check_bytes
+	 srlx		%o4, 32, %g3
+
+	brgz,a,pt	%o1, msloop
+	 ldxa		[%o0] ASI_PL, %o5
+check_bytes:
+	bne,a,pn	%icc, 2f
+	 andcc		%o5, 0xff, %g0
+	add		%o0, -5, %g2
+	ba,pt		%xcc, 3f
+	 srlx		%o5, 32, %g7
+
+2:	srlx		%o5, 8, %g7
+	be,pn		%icc, 1f
+	 add		%o0, -8, %g2
+	andcc		%g7, 0xff, %g0
+	srlx		%g7, 8, %g7
+	be,pn		%icc, 1f
+	 inc		%g2
+	andcc		%g7, 0xff, %g0
+
+	srlx		%g7, 8, %g7
+	be,pn		%icc, 1f
+	 inc		%g2
+	andcc		%g7, 0xff, %g0
+	srlx		%g7, 8, %g7
+	be,pn		%icc, 1f
+	 inc		%g2
+	andcc		%g3, %o3, %g0
+
+	be,a,pn		%icc, 2f
+	 mov		%o0, %g2
+3:	andcc		%g7, 0xff, %g0
+	srlx		%g7, 8, %g7
+	be,pn		%icc, 1f
+	 inc		%g2
+	andcc		%g7, 0xff, %g0
+	srlx		%g7, 8, %g7
+
+	be,pn		%icc, 1f
+	 inc		%g2
+	andcc		%g7, 0xff, %g0
+	srlx		%g7, 8, %g7
+	be,pn		%icc, 1f
+	 inc		%g2
+	andcc		%g7, 0xff, %g0
+	srlx		%g7, 8, %g7
+
+	be,pn		%icc, 1f
+	 inc		%g2
+2:	brgz,a,pt	%o1, msloop
+	 ldxa		[%o0] ASI_PL, %o5
+	inc		%g2
+1:	add		%o0, %o1, %o0
+	cmp		%g2, %o0
+	retl
+
+	 movle		%xcc, %g2, %o0
+10:	retl
+	 sub		%o0, 1, %o0
+szzero:	retl
+	 nop
+
+memscan:
+__memscan_generic:
+	/* %o0 = addr, %o1 = c, %o2 = size */
+	brz,pn		%o2, 3f
+	 add		%o0, %o2, %o3
+	ldub		[%o0], %o5
+	sub		%g0, %o2, %o4
+1:
+	cmp		%o5, %o1
+	be,pn		%icc, 2f
+	 addcc		%o4, 1, %o4
+	bne,a,pt 	%xcc, 1b
+	 ldub		[%o3 + %o4], %o5
+	retl
+	/* The delay slot is the same as the next insn, this is just to make it look more awful */
+2:
+	 add		%o3, %o4, %o0
+	retl
+	 sub		%o0, 1, %o0
+3:
+	retl
+	 nop
diff --git a/arch/sparc/lib/memset.S b/arch/sparc/lib/memset.S
new file mode 100644
index 000000000..f427f34b8
--- /dev/null
+++ b/arch/sparc/lib/memset.S
@@ -0,0 +1,218 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* linux/arch/sparc/lib/memset.S: Sparc optimized memset, bzero and clear_user code
+ * Copyright (C) 1991,1996 Free Software Foundation
+ * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
+ *
+ * Calls to memset returns initial %o0. Calls to bzero returns 0, if ok, and
+ * number of bytes not yet set if exception occurs and we were called as
+ * clear_user.
+ */
+
+#include <asm/ptrace.h>
+#include <asm/export.h>
+
+/* Work around cpp -rob */
+#define ALLOC #alloc
+#define EXECINSTR #execinstr
+#define EX(x,y,a,b) 				\
+98: 	x,y;					\
+	.section .fixup,ALLOC,EXECINSTR;	\
+	.align	4;				\
+99:	ba 30f;					\
+	 a, b, %o0;				\
+	.section __ex_table,ALLOC;		\
+	.align	4;				\
+	.word	98b, 99b;			\
+	.text;					\
+	.align	4
+
+#define EXT(start,end,handler) 			\
+	.section __ex_table,ALLOC;		\
+	.align	4;				\
+	.word	start, 0, end, handler;		\
+	.text;					\
+	.align	4
+
+/* Please don't change these macros, unless you change the logic
+ * in the .fixup section below as well.
+ * Store 64 bytes at (BASE + OFFSET) using value SOURCE. */
+#define ZERO_BIG_BLOCK(base, offset, source)    \
+	std	source, [base + offset + 0x00]; \
+	std	source, [base + offset + 0x08]; \
+	std	source, [base + offset + 0x10]; \
+	std	source, [base + offset + 0x18]; \
+	std	source, [base + offset + 0x20]; \
+	std	source, [base + offset + 0x28]; \
+	std	source, [base + offset + 0x30]; \
+	std	source, [base + offset + 0x38];
+
+#define ZERO_LAST_BLOCKS(base, offset, source)	\
+	std	source, [base - offset - 0x38]; \
+	std	source, [base - offset - 0x30]; \
+	std	source, [base - offset - 0x28]; \
+	std	source, [base - offset - 0x20]; \
+	std	source, [base - offset - 0x18]; \
+	std	source, [base - offset - 0x10]; \
+	std	source, [base - offset - 0x08]; \
+	std	source, [base - offset - 0x00];
+
+	.text
+	.align 4
+
+        .globl  __bzero_begin
+__bzero_begin:
+
+	.globl	__bzero
+	.type	__bzero,#function
+	.globl	memset
+	EXPORT_SYMBOL(__bzero)
+	EXPORT_SYMBOL(memset)
+	.globl	__memset_start, __memset_end
+__memset_start:
+memset:
+	mov	%o0, %g1
+	mov	1, %g4
+	and	%o1, 0xff, %g3
+	sll	%g3, 8, %g2
+	or	%g3, %g2, %g3
+	sll	%g3, 16, %g2
+	or	%g3, %g2, %g3
+	b	1f
+	 mov	%o2, %o1
+3:
+	cmp	%o2, 3
+	be	2f
+	 EX(stb	%g3, [%o0], sub %o1, 0)
+
+	cmp	%o2, 2
+	be	2f
+	 EX(stb	%g3, [%o0 + 0x01], sub %o1, 1)
+
+	EX(stb	%g3, [%o0 + 0x02], sub %o1, 2)
+2:
+	sub	%o2, 4, %o2
+	add	%o1, %o2, %o1
+	b	4f
+	 sub	%o0, %o2, %o0
+
+__bzero:
+	clr	%g4
+	mov	%g0, %g3
+1:
+	cmp	%o1, 7
+	bleu	7f
+	 andcc	%o0, 3, %o2
+
+	bne	3b
+4:
+	 andcc	%o0, 4, %g0
+
+	be	2f
+	 mov	%g3, %g2
+
+	EX(st	%g3, [%o0], sub %o1, 0)
+	sub	%o1, 4, %o1
+	add	%o0, 4, %o0
+2:
+	andcc	%o1, 0xffffff80, %o3	! Now everything is 8 aligned and o1 is len to run
+	be	9f
+	 andcc	%o1, 0x78, %o2
+10:
+	ZERO_BIG_BLOCK(%o0, 0x00, %g2)
+	subcc	%o3, 128, %o3
+	ZERO_BIG_BLOCK(%o0, 0x40, %g2)
+11:
+	EXT(10b, 11b, 20f)
+	bne	10b
+	 add	%o0, 128, %o0
+
+	orcc	%o2, %g0, %g0
+9:
+	be	13f
+	 andcc	%o1, 7, %o1
+
+	srl	%o2, 1, %o3
+	set	13f, %o4
+	sub	%o4, %o3, %o4
+	jmp	%o4
+	 add	%o0, %o2, %o0
+
+12:
+	ZERO_LAST_BLOCKS(%o0, 0x48, %g2)
+	ZERO_LAST_BLOCKS(%o0, 0x08, %g2)
+13:
+	EXT(12b, 13b, 21f)
+	be	8f
+	 andcc	%o1, 4, %g0
+
+	be	1f
+	 andcc	%o1, 2, %g0
+
+	EX(st	%g3, [%o0], and %o1, 7)
+	add	%o0, 4, %o0
+1:
+	be	1f
+	 andcc	%o1, 1, %g0
+
+	EX(sth	%g3, [%o0], and %o1, 3)
+	add	%o0, 2, %o0
+1:
+	bne,a	8f
+	 EX(stb	%g3, [%o0], and %o1, 1)
+8:
+	b	0f
+	 nop
+7:
+	be	13b
+	 orcc	%o1, 0, %g0
+
+	be	0f
+8:
+	 add	%o0, 1, %o0
+	subcc	%o1, 1, %o1
+	bne	8b
+	 EX(stb	%g3, [%o0 - 1], add %o1, 1)
+0:
+	andcc	%g4, 1, %g0
+	be	5f
+	 nop
+	retl
+	 mov	%g1, %o0
+5:
+	retl
+	 clr	%o0
+__memset_end:
+
+	.section .fixup,#alloc,#execinstr
+	.align	4
+20:
+	cmp	%g2, 8
+	bleu	1f
+	 and	%o1, 0x7f, %o1
+	sub	%g2, 9, %g2
+	add	%o3, 64, %o3
+1:
+	sll	%g2, 3, %g2
+	add	%o3, %o1, %o0
+	b 30f
+	 sub	%o0, %g2, %o0
+21:
+	mov	8, %o0
+	and	%o1, 7, %o1
+	sub	%o0, %g2, %o0
+	sll	%o0, 3, %o0
+	b 30f
+	 add	%o0, %o1, %o0
+30:
+/* %o4 is faulting address, %o5 is %pc where fault occurred */
+	save	%sp, -104, %sp
+	mov	%i5, %o0
+	mov	%i7, %o1
+	call	lookup_fault
+	 mov	%i4, %o2
+	ret
+	 restore
+
+	.globl __bzero_end
+__bzero_end:
diff --git a/arch/sparc/lib/muldi3.S b/arch/sparc/lib/muldi3.S
new file mode 100644
index 000000000..17a0f49ae
--- /dev/null
+++ b/arch/sparc/lib/muldi3.S
@@ -0,0 +1,78 @@
+/* Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+
+This file is part of GNU CC.
+
+GNU CC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU CC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU CC; see the file COPYING.  If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+#include <asm/export.h>
+	.text
+	.align 4
+	.globl __muldi3
+__muldi3:
+	save  %sp, -104, %sp
+	wr  %g0, %i1, %y
+	sra  %i3, 0x1f, %g2
+	and  %i1, %g2, %g2
+	andcc  %g0, 0, %g1
+	mulscc  %g1, %i3, %g1
+	mulscc  %g1, %i3, %g1
+	mulscc  %g1, %i3, %g1
+	mulscc  %g1, %i3, %g1
+	mulscc  %g1, %i3, %g1
+	mulscc  %g1, %i3, %g1
+	mulscc  %g1, %i3, %g1
+	mulscc  %g1, %i3, %g1
+	mulscc  %g1, %i3, %g1
+	mulscc  %g1, %i3, %g1
+	mulscc  %g1, %i3, %g1
+	mulscc  %g1, %i3, %g1
+	mulscc  %g1, %i3, %g1
+	mulscc  %g1, %i3, %g1
+	mulscc  %g1, %i3, %g1
+	mulscc  %g1, %i3, %g1
+	mulscc  %g1, %i3, %g1
+	mulscc  %g1, %i3, %g1
+	mulscc  %g1, %i3, %g1
+	mulscc  %g1, %i3, %g1
+	mulscc  %g1, %i3, %g1
+	mulscc  %g1, %i3, %g1
+	mulscc  %g1, %i3, %g1
+	mulscc  %g1, %i3, %g1
+	mulscc  %g1, %i3, %g1
+	mulscc  %g1, %i3, %g1
+	mulscc  %g1, %i3, %g1
+	mulscc  %g1, %i3, %g1
+	mulscc  %g1, %i3, %g1
+	mulscc  %g1, %i3, %g1
+	mulscc  %g1, %i3, %g1
+	mulscc  %g1, %i3, %g1
+	mulscc  %g1, 0, %g1
+	add  %g1, %g2, %l2
+	rd  %y, %o1
+	mov  %o1, %l3
+	mov  %i1, %o0
+	mov  %i2, %o1
+	umul %o0, %o1, %o0
+	mov  %o0, %l0
+	mov  %i0, %o0
+	mov  %i3, %o1
+	umul %o0, %o1, %o0
+	add  %l0, %o0, %l0
+	mov  %l2, %i0
+	add  %l2, %l0, %i0
+	ret 
+	restore  %g0, %l3, %o1
+EXPORT_SYMBOL(__muldi3)
diff --git a/arch/sparc/lib/multi3.S b/arch/sparc/lib/multi3.S
new file mode 100644
index 000000000..2f187b299
--- /dev/null
+++ b/arch/sparc/lib/multi3.S
@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#include <linux/linkage.h>
+#include <asm/export.h>
+
+	.text
+	.align	4
+ENTRY(__multi3) /* %o0 = u, %o1 = v */
+	mov	%o1, %g1
+	srl	%o3, 0, %o4
+	mulx	%o4, %g1, %o1
+	srlx	%g1, 0x20, %g3
+	mulx	%g3, %o4, %g7
+	sllx	%g7, 0x20, %o5
+	srl	%g1, 0, %o4
+	sub	%o1, %o5, %o5
+	srlx	%o5, 0x20, %o5
+	addcc	%g7, %o5, %g7
+	srlx	%o3, 0x20, %o5
+	mulx	%o4, %o5, %o4
+	mulx	%g3, %o5, %o5
+	sethi	%hi(0x80000000), %g3
+	addcc	%g7, %o4, %g7
+	srlx	%g7, 0x20, %g7
+	add	%g3, %g3, %g3
+	movcc	%xcc, %g0, %g3
+	addcc	%o5, %g7, %o5
+	sllx	%o4, 0x20, %o4
+	add	%o1, %o4, %o1
+	add	%o5, %g3, %g2
+	mulx	%g1, %o2, %g1
+	add	%g1, %g2, %g1
+	mulx	%o0, %o3, %o0
+	retl
+	 add	%g1, %o0, %o0
+ENDPROC(__multi3)
+EXPORT_SYMBOL(__multi3)
diff --git a/arch/sparc/lib/strlen.S b/arch/sparc/lib/strlen.S
new file mode 100644
index 000000000..dd111bbad
--- /dev/null
+++ b/arch/sparc/lib/strlen.S
@@ -0,0 +1,83 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* strlen.S: Sparc optimized strlen code
+ * Hand optimized from GNU libc's strlen
+ * Copyright (C) 1991,1996 Free Software Foundation
+ * Copyright (C) 1996,2008 David S. Miller (davem@davemloft.net)
+ * Copyright (C) 1996, 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#include <linux/linkage.h>
+#include <asm/asm.h>
+#include <asm/export.h>
+
+#define LO_MAGIC 0x01010101
+#define HI_MAGIC 0x80808080
+
+	.text
+ENTRY(strlen)
+	mov	%o0, %o1
+	andcc	%o0, 3, %g0
+	BRANCH32(be, pt, 9f)
+	 sethi	%hi(HI_MAGIC), %o4
+	ldub	[%o0], %o5
+	BRANCH_REG_ZERO(pn, %o5, 11f)
+	 add	%o0, 1, %o0
+	andcc	%o0, 3, %g0
+	BRANCH32(be, pn, 4f)
+	 or	%o4, %lo(HI_MAGIC), %o3
+	ldub	[%o0], %o5
+	BRANCH_REG_ZERO(pn, %o5, 12f)
+	 add	%o0, 1, %o0
+	andcc	%o0, 3, %g0
+	BRANCH32(be, pt, 5f)
+	 sethi	%hi(LO_MAGIC), %o4
+	ldub	[%o0], %o5
+	BRANCH_REG_ZERO(pn, %o5, 13f)
+	 add	%o0, 1, %o0
+	BRANCH32(ba, pt, 8f)
+	 or	%o4, %lo(LO_MAGIC), %o2
+9:
+	or	%o4, %lo(HI_MAGIC), %o3
+4:
+	sethi	%hi(LO_MAGIC), %o4
+5:
+	or	%o4, %lo(LO_MAGIC), %o2
+8:
+	ld	[%o0], %o5
+2:
+	sub	%o5, %o2, %o4
+	andcc	%o4, %o3, %g0
+	BRANCH32(be, pt, 8b)
+	 add	%o0, 4, %o0
+
+	/* Check every byte. */
+	srl	%o5, 24, %g7
+	andcc	%g7, 0xff, %g0
+	BRANCH32(be, pn, 1f)
+	 add	%o0, -4, %o4
+	srl	%o5, 16, %g7
+	andcc	%g7, 0xff, %g0
+	BRANCH32(be, pn, 1f)
+	 add	%o4, 1, %o4
+	srl	%o5, 8, %g7
+	andcc	%g7, 0xff, %g0
+	BRANCH32(be, pn, 1f)
+	 add	%o4, 1, %o4
+	andcc	%o5, 0xff, %g0
+	BRANCH32_ANNUL(bne, pt, 2b)
+	 ld	[%o0], %o5
+	add	%o4, 1, %o4
+1:
+	retl
+	 sub	%o4, %o1, %o0
+11:
+	retl
+	 mov	0, %o0
+12:
+	retl
+	 mov	1, %o0
+13:
+	retl
+	 mov	2, %o0
+ENDPROC(strlen)
+EXPORT_SYMBOL(strlen)
diff --git a/arch/sparc/lib/strncmp_32.S b/arch/sparc/lib/strncmp_32.S
new file mode 100644
index 000000000..794733f03
--- /dev/null
+++ b/arch/sparc/lib/strncmp_32.S
@@ -0,0 +1,121 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * strncmp.S: Hand optimized Sparc assembly of GCC output from GNU libc
+ *            generic strncmp routine.
+ */
+
+#include <linux/linkage.h>
+#include <asm/export.h>
+
+	.text
+ENTRY(strncmp)
+	mov	%o0, %g3
+	mov	0, %o3
+
+	cmp	%o2, 3
+	ble	7f
+	 mov	0, %g2
+
+	sra	%o2, 2, %o4
+	ldub	[%g3], %o3
+
+0:
+	ldub	[%o1], %g2
+	add	%g3, 1, %g3
+	and	%o3, 0xff, %o0
+
+	cmp	%o0, 0
+	be	8f
+	 add	%o1, 1, %o1
+
+	cmp	%o0, %g2
+	be,a	1f
+	 ldub	[%g3], %o3
+
+	retl
+	 sub	%o0, %g2, %o0
+
+1:
+	ldub	[%o1], %g2
+	add	%g3,1, %g3
+	and	%o3, 0xff, %o0
+
+	cmp	%o0, 0
+	be	8f
+	 add	%o1, 1, %o1
+
+	cmp	%o0, %g2
+	be,a	1f
+	 ldub	[%g3], %o3
+
+	retl
+	 sub	%o0, %g2, %o0
+
+1:
+	ldub	[%o1], %g2
+	add	%g3, 1, %g3
+	and	%o3, 0xff, %o0
+
+	cmp	%o0, 0
+	be	8f
+	 add	%o1, 1, %o1
+
+	cmp	%o0, %g2
+	be,a	1f
+	 ldub	[%g3], %o3
+
+	retl
+	 sub	%o0, %g2, %o0
+
+1:
+	ldub	[%o1], %g2
+	add	%g3, 1, %g3
+	and	%o3, 0xff, %o0
+
+	cmp	%o0, 0
+	be	8f
+	 add	%o1, 1, %o1
+
+	cmp	%o0, %g2
+	be	1f
+	 add	%o4, -1, %o4
+
+	retl
+	 sub	%o0, %g2, %o0
+
+1:
+
+	cmp	%o4, 0
+	bg,a	0b
+	 ldub	[%g3], %o3
+
+	b	7f
+	 and	%o2, 3, %o2
+
+9:
+	ldub	[%o1], %g2
+	add	%g3, 1, %g3
+	and	%o3, 0xff, %o0
+
+	cmp	%o0, 0
+	be	8f
+	 add	%o1, 1, %o1
+
+	cmp	%o0, %g2
+	be	7f
+	 add	%o2, -1, %o2
+
+8:
+	retl
+	 sub	%o0, %g2, %o0
+
+7:
+	cmp	%o2, 0
+	bg,a	9b
+	 ldub	[%g3], %o3
+
+	and	%g2, 0xff, %o0
+	retl
+	 sub	%o3, %o0, %o0
+ENDPROC(strncmp)
+EXPORT_SYMBOL(strncmp)
diff --git a/arch/sparc/lib/strncmp_64.S b/arch/sparc/lib/strncmp_64.S
new file mode 100644
index 000000000..3d37d65f6
--- /dev/null
+++ b/arch/sparc/lib/strncmp_64.S
@@ -0,0 +1,33 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Sparc64 optimized strncmp code.
+ *
+ * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#include <linux/linkage.h>
+#include <asm/asi.h>
+#include <asm/export.h>
+
+	.text
+ENTRY(strncmp)
+	brlez,pn %o2, 3f
+	 lduba	[%o0] (ASI_PNF), %o3
+1:
+	add	%o0, 1, %o0
+	ldub	[%o1], %o4
+	brz,pn	%o3, 2f
+	 add	%o1, 1, %o1
+	cmp	%o3, %o4
+	bne,pn	%icc, 2f
+	 subcc	%o2, 1, %o2
+	bne,a,pt %xcc, 1b
+	 ldub	[%o0], %o3
+2:
+	retl
+	 sub	%o3, %o4, %o0
+3:
+	retl
+	 clr	%o0
+ENDPROC(strncmp)
+EXPORT_SYMBOL(strncmp)
diff --git a/arch/sparc/lib/ucmpdi2.c b/arch/sparc/lib/ucmpdi2.c
new file mode 100644
index 000000000..82c1cccb1
--- /dev/null
+++ b/arch/sparc/lib/ucmpdi2.c
@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/module.h>
+#include "libgcc.h"
+
+word_type __ucmpdi2(unsigned long long a, unsigned long long b)
+{
+	const DWunion au = {.ll = a};
+	const DWunion bu = {.ll = b};
+
+	if ((unsigned int) au.s.high < (unsigned int) bu.s.high)
+		return 0;
+	else if ((unsigned int) au.s.high > (unsigned int) bu.s.high)
+		return 2;
+	if ((unsigned int) au.s.low < (unsigned int) bu.s.low)
+		return 0;
+	else if ((unsigned int) au.s.low > (unsigned int) bu.s.low)
+		return 2;
+	return 1;
+}
+EXPORT_SYMBOL(__ucmpdi2);
diff --git a/arch/sparc/lib/udivdi3.S b/arch/sparc/lib/udivdi3.S
new file mode 100644
index 000000000..24e0a355e
--- /dev/null
+++ b/arch/sparc/lib/udivdi3.S
@@ -0,0 +1,259 @@
+/* Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+
+This file is part of GNU CC.
+
+GNU CC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU CC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU CC; see the file COPYING.  If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+	.text
+	.align 4
+	.globl __udivdi3
+__udivdi3:
+	save %sp,-104,%sp
+	mov %i3,%o3
+	cmp %i2,0
+	bne .LL40
+	mov %i1,%i3
+	cmp %o3,%i0
+	bleu .LL41
+	mov %i3,%o1
+	! Inlined udiv_qrnnd
+	mov	32,%g1
+	subcc	%i0,%o3,%g0
+1:	bcs	5f
+	 addxcc %o1,%o1,%o1	! shift n1n0 and a q-bit in lsb
+	sub	%i0,%o3,%i0	! this kills msb of n
+	addx	%i0,%i0,%i0	! so this cannot give carry
+	subcc	%g1,1,%g1
+2:	bne	1b
+	 subcc	%i0,%o3,%g0
+	bcs	3f
+	 addxcc %o1,%o1,%o1	! shift n1n0 and a q-bit in lsb
+	b	3f
+	 sub	%i0,%o3,%i0	! this kills msb of n
+4:	sub	%i0,%o3,%i0
+5:	addxcc	%i0,%i0,%i0
+	bcc	2b
+	 subcc	%g1,1,%g1
+! Got carry from n.  Subtract next step to cancel this carry.
+	bne	4b
+	 addcc	%o1,%o1,%o1	! shift n1n0 and a 0-bit in lsb
+	sub	%i0,%o3,%i0
+3:	xnor	%o1,0,%o1
+	! End of inline udiv_qrnnd
+	b .LL45
+	mov 0,%o2
+.LL41:
+	cmp %o3,0
+	bne .LL77
+	mov %i0,%o2
+	mov 1,%o0
+	mov 0,%o1
+	wr %g0, 0, %y
+	udiv %o0, %o1, %o0
+	mov %o0,%o3
+	mov %i0,%o2
+.LL77:
+	mov 0,%o4
+	! Inlined udiv_qrnnd
+	mov	32,%g1
+	subcc	%o4,%o3,%g0
+1:	bcs	5f
+	 addxcc %o2,%o2,%o2	! shift n1n0 and a q-bit in lsb
+	sub	%o4,%o3,%o4	! this kills msb of n
+	addx	%o4,%o4,%o4	! so this cannot give carry
+	subcc	%g1,1,%g1
+2:	bne	1b
+	 subcc	%o4,%o3,%g0
+	bcs	3f
+	 addxcc %o2,%o2,%o2	! shift n1n0 and a q-bit in lsb
+	b	3f
+	 sub	%o4,%o3,%o4	! this kills msb of n
+4:	sub	%o4,%o3,%o4
+5:	addxcc	%o4,%o4,%o4
+	bcc	2b
+	 subcc	%g1,1,%g1
+! Got carry from n.  Subtract next step to cancel this carry.
+	bne	4b
+	 addcc	%o2,%o2,%o2	! shift n1n0 and a 0-bit in lsb
+	sub	%o4,%o3,%o4
+3:	xnor	%o2,0,%o2
+	! End of inline udiv_qrnnd
+	mov %o4,%i0
+	mov %i3,%o1
+	! Inlined udiv_qrnnd
+	mov	32,%g1
+	subcc	%i0,%o3,%g0
+1:	bcs	5f
+	 addxcc %o1,%o1,%o1	! shift n1n0 and a q-bit in lsb
+	sub	%i0,%o3,%i0	! this kills msb of n
+	addx	%i0,%i0,%i0	! so this cannot give carry
+	subcc	%g1,1,%g1
+2:	bne	1b
+	 subcc	%i0,%o3,%g0
+	bcs	3f
+	 addxcc %o1,%o1,%o1	! shift n1n0 and a q-bit in lsb
+	b	3f
+	 sub	%i0,%o3,%i0	! this kills msb of n
+4:	sub	%i0,%o3,%i0
+5:	addxcc	%i0,%i0,%i0
+	bcc	2b
+	 subcc	%g1,1,%g1
+! Got carry from n.  Subtract next step to cancel this carry.
+	bne	4b
+	 addcc	%o1,%o1,%o1	! shift n1n0 and a 0-bit in lsb
+	sub	%i0,%o3,%i0
+3:	xnor	%o1,0,%o1
+	! End of inline udiv_qrnnd
+	b .LL78
+	mov %o1,%l1
+.LL40:
+	cmp %i2,%i0
+	bleu .LL46
+	sethi %hi(65535),%o0
+	b .LL73
+	mov 0,%o1
+.LL46:
+	or %o0,%lo(65535),%o0
+	cmp %i2,%o0
+	bgu .LL53
+	mov %i2,%o1
+	cmp %i2,256
+	addx %g0,-1,%o0
+	b .LL59
+	and %o0,8,%o2
+.LL53:
+	sethi %hi(16777215),%o0
+	or %o0,%lo(16777215),%o0
+	cmp %o1,%o0
+	bgu .LL59
+	mov 24,%o2
+	mov 16,%o2
+.LL59:
+	srl %o1,%o2,%o1
+	sethi %hi(__clz_tab),%o0
+	or %o0,%lo(__clz_tab),%o0
+	ldub [%o1+%o0],%o0
+	add %o0,%o2,%o0
+	mov 32,%o1
+	subcc %o1,%o0,%o2
+	bne,a .LL67
+	mov 32,%o0
+	cmp %i0,%i2
+	bgu .LL69
+	cmp %i3,%o3
+	blu .LL73
+	mov 0,%o1
+.LL69:
+	b .LL73
+	mov 1,%o1
+.LL67:
+	sub %o0,%o2,%o0
+	sll %i2,%o2,%i2
+	srl %o3,%o0,%o1
+	or %i2,%o1,%i2
+	sll %o3,%o2,%o3
+	srl %i0,%o0,%o1
+	sll %i0,%o2,%i0
+	srl %i3,%o0,%o0
+	or %i0,%o0,%i0
+	sll %i3,%o2,%i3
+	mov %i0,%o5
+	mov %o1,%o4
+	! Inlined udiv_qrnnd
+	mov	32,%g1
+	subcc	%o4,%i2,%g0
+1:	bcs	5f
+	 addxcc %o5,%o5,%o5	! shift n1n0 and a q-bit in lsb
+	sub	%o4,%i2,%o4	! this kills msb of n
+	addx	%o4,%o4,%o4	! so this cannot give carry
+	subcc	%g1,1,%g1
+2:	bne	1b
+	 subcc	%o4,%i2,%g0
+	bcs	3f
+	 addxcc %o5,%o5,%o5	! shift n1n0 and a q-bit in lsb
+	b	3f
+	 sub	%o4,%i2,%o4	! this kills msb of n
+4:	sub	%o4,%i2,%o4
+5:	addxcc	%o4,%o4,%o4
+	bcc	2b
+	 subcc	%g1,1,%g1
+! Got carry from n.  Subtract next step to cancel this carry.
+	bne	4b
+	 addcc	%o5,%o5,%o5	! shift n1n0 and a 0-bit in lsb
+	sub	%o4,%i2,%o4
+3:	xnor	%o5,0,%o5
+	! End of inline udiv_qrnnd
+	mov %o4,%i0
+	mov %o5,%o1
+	! Inlined umul_ppmm
+	wr	%g0,%o1,%y	! SPARC has 0-3 delay insn after a wr
+	sra	%o3,31,%g2	! Do not move this insn
+	and	%o1,%g2,%g2	! Do not move this insn
+	andcc	%g0,0,%g1	! Do not move this insn
+	mulscc	%g1,%o3,%g1
+	mulscc	%g1,%o3,%g1
+	mulscc	%g1,%o3,%g1
+	mulscc	%g1,%o3,%g1
+	mulscc	%g1,%o3,%g1
+	mulscc	%g1,%o3,%g1
+	mulscc	%g1,%o3,%g1
+	mulscc	%g1,%o3,%g1
+	mulscc	%g1,%o3,%g1
+	mulscc	%g1,%o3,%g1
+	mulscc	%g1,%o3,%g1
+	mulscc	%g1,%o3,%g1
+	mulscc	%g1,%o3,%g1
+	mulscc	%g1,%o3,%g1
+	mulscc	%g1,%o3,%g1
+	mulscc	%g1,%o3,%g1
+	mulscc	%g1,%o3,%g1
+	mulscc	%g1,%o3,%g1
+	mulscc	%g1,%o3,%g1
+	mulscc	%g1,%o3,%g1
+	mulscc	%g1,%o3,%g1
+	mulscc	%g1,%o3,%g1
+	mulscc	%g1,%o3,%g1
+	mulscc	%g1,%o3,%g1
+	mulscc	%g1,%o3,%g1
+	mulscc	%g1,%o3,%g1
+	mulscc	%g1,%o3,%g1
+	mulscc	%g1,%o3,%g1
+	mulscc	%g1,%o3,%g1
+	mulscc	%g1,%o3,%g1
+	mulscc	%g1,%o3,%g1
+	mulscc	%g1,%o3,%g1
+	mulscc	%g1,0,%g1
+	add	%g1,%g2,%o0
+	rd	%y,%o2
+	cmp %o0,%i0
+	bgu,a .LL73
+	add %o1,-1,%o1
+	bne,a .LL45
+	mov 0,%o2
+	cmp %o2,%i3
+	bleu .LL45
+	mov 0,%o2
+	add %o1,-1,%o1
+.LL73:
+	mov 0,%o2
+.LL45:
+	mov %o1,%l1
+.LL78:
+	mov %o2,%l0
+	mov %l0,%i0
+	mov %l1,%i1
+	ret
+	restore
diff --git a/arch/sparc/lib/xor.S b/arch/sparc/lib/xor.S
new file mode 100644
index 000000000..f6af7c7ee
--- /dev/null
+++ b/arch/sparc/lib/xor.S
@@ -0,0 +1,646 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * arch/sparc64/lib/xor.S
+ *
+ * High speed xor_block operation for RAID4/5 utilizing the
+ * UltraSparc Visual Instruction Set and Niagara store-init/twin-load.
+ *
+ * Copyright (C) 1997, 1999 Jakub Jelinek (jj@ultra.linux.cz)
+ * Copyright (C) 2006 David S. Miller <davem@davemloft.net>
+ */
+
+#include <linux/linkage.h>
+#include <asm/visasm.h>
+#include <asm/asi.h>
+#include <asm/dcu.h>
+#include <asm/spitfire.h>
+#include <asm/export.h>
+
+/*
+ *	Requirements:
+ *	!(((long)dest | (long)sourceN) & (64 - 1)) &&
+ *	!(len & 127) && len >= 256
+ */
+	.text
+
+	/* VIS versions. */
+ENTRY(xor_vis_2)
+	rd	%fprs, %o5
+	andcc	%o5, FPRS_FEF|FPRS_DU, %g0
+	be,pt	%icc, 0f
+	 sethi	%hi(VISenter), %g1
+	jmpl	%g1 + %lo(VISenter), %g7
+	 add	%g7, 8, %g7
+0:	wr	%g0, FPRS_FEF, %fprs
+	rd	%asi, %g1
+	wr	%g0, ASI_BLK_P, %asi
+	membar	#LoadStore|#StoreLoad|#StoreStore
+	sub	%o0, 128, %o0
+	ldda	[%o1] %asi, %f0
+	ldda	[%o2] %asi, %f16
+
+2:	ldda	[%o1 + 64] %asi, %f32
+	fxor	%f0, %f16, %f16
+	fxor	%f2, %f18, %f18
+	fxor	%f4, %f20, %f20
+	fxor	%f6, %f22, %f22
+	fxor	%f8, %f24, %f24
+	fxor	%f10, %f26, %f26
+	fxor	%f12, %f28, %f28
+	fxor	%f14, %f30, %f30
+	stda	%f16, [%o1] %asi
+	ldda	[%o2 + 64] %asi, %f48
+	ldda	[%o1 + 128] %asi, %f0
+	fxor	%f32, %f48, %f48
+	fxor	%f34, %f50, %f50
+	add	%o1, 128, %o1
+	fxor	%f36, %f52, %f52
+	add	%o2, 128, %o2
+	fxor	%f38, %f54, %f54
+	subcc	%o0, 128, %o0
+	fxor	%f40, %f56, %f56
+	fxor	%f42, %f58, %f58
+	fxor	%f44, %f60, %f60
+	fxor	%f46, %f62, %f62
+	stda	%f48, [%o1 - 64] %asi
+	bne,pt	%xcc, 2b
+	 ldda	[%o2] %asi, %f16
+
+	ldda	[%o1 + 64] %asi, %f32
+	fxor	%f0, %f16, %f16
+	fxor	%f2, %f18, %f18
+	fxor	%f4, %f20, %f20
+	fxor	%f6, %f22, %f22
+	fxor	%f8, %f24, %f24
+	fxor	%f10, %f26, %f26
+	fxor	%f12, %f28, %f28
+	fxor	%f14, %f30, %f30
+	stda	%f16, [%o1] %asi
+	ldda	[%o2 + 64] %asi, %f48
+	membar	#Sync
+	fxor	%f32, %f48, %f48
+	fxor	%f34, %f50, %f50
+	fxor	%f36, %f52, %f52
+	fxor	%f38, %f54, %f54
+	fxor	%f40, %f56, %f56
+	fxor	%f42, %f58, %f58
+	fxor	%f44, %f60, %f60
+	fxor	%f46, %f62, %f62
+	stda	%f48, [%o1 + 64] %asi
+	membar	#Sync|#StoreStore|#StoreLoad
+	wr	%g1, %g0, %asi
+	retl
+	  wr	%g0, 0, %fprs
+ENDPROC(xor_vis_2)
+EXPORT_SYMBOL(xor_vis_2)
+
+ENTRY(xor_vis_3)
+	rd	%fprs, %o5
+	andcc	%o5, FPRS_FEF|FPRS_DU, %g0
+	be,pt	%icc, 0f
+	 sethi	%hi(VISenter), %g1
+	jmpl	%g1 + %lo(VISenter), %g7
+	 add	%g7, 8, %g7
+0:	wr	%g0, FPRS_FEF, %fprs
+	rd	%asi, %g1
+	wr	%g0, ASI_BLK_P, %asi
+	membar	#LoadStore|#StoreLoad|#StoreStore
+	sub	%o0, 64, %o0
+	ldda	[%o1] %asi, %f0
+	ldda	[%o2] %asi, %f16
+
+3:	ldda	[%o3] %asi, %f32
+	fxor	%f0, %f16, %f48
+	fxor	%f2, %f18, %f50
+	add	%o1, 64, %o1
+	fxor	%f4, %f20, %f52
+	fxor	%f6, %f22, %f54
+	add	%o2, 64, %o2
+	fxor	%f8, %f24, %f56
+	fxor	%f10, %f26, %f58
+	fxor	%f12, %f28, %f60
+	fxor	%f14, %f30, %f62
+	ldda	[%o1] %asi, %f0
+	fxor	%f48, %f32, %f48
+	fxor	%f50, %f34, %f50
+	fxor	%f52, %f36, %f52
+	fxor	%f54, %f38, %f54
+	add	%o3, 64, %o3
+	fxor	%f56, %f40, %f56
+	fxor	%f58, %f42, %f58
+	subcc	%o0, 64, %o0
+	fxor	%f60, %f44, %f60
+	fxor	%f62, %f46, %f62
+	stda	%f48, [%o1 - 64] %asi
+	bne,pt	%xcc, 3b
+	 ldda	[%o2] %asi, %f16
+
+	ldda	[%o3] %asi, %f32
+	fxor	%f0, %f16, %f48
+	fxor	%f2, %f18, %f50
+	fxor	%f4, %f20, %f52
+	fxor	%f6, %f22, %f54
+	fxor	%f8, %f24, %f56
+	fxor	%f10, %f26, %f58
+	fxor	%f12, %f28, %f60
+	fxor	%f14, %f30, %f62
+	membar	#Sync
+	fxor	%f48, %f32, %f48
+	fxor	%f50, %f34, %f50
+	fxor	%f52, %f36, %f52
+	fxor	%f54, %f38, %f54
+	fxor	%f56, %f40, %f56
+	fxor	%f58, %f42, %f58
+	fxor	%f60, %f44, %f60
+	fxor	%f62, %f46, %f62
+	stda	%f48, [%o1] %asi
+	membar	#Sync|#StoreStore|#StoreLoad
+	wr	%g1, %g0, %asi
+	retl
+	 wr	%g0, 0, %fprs
+ENDPROC(xor_vis_3)
+EXPORT_SYMBOL(xor_vis_3)
+
+ENTRY(xor_vis_4)
+	rd	%fprs, %o5
+	andcc	%o5, FPRS_FEF|FPRS_DU, %g0
+	be,pt	%icc, 0f
+	 sethi	%hi(VISenter), %g1
+	jmpl	%g1 + %lo(VISenter), %g7
+	 add	%g7, 8, %g7
+0:	wr	%g0, FPRS_FEF, %fprs
+	rd	%asi, %g1
+	wr	%g0, ASI_BLK_P, %asi
+	membar	#LoadStore|#StoreLoad|#StoreStore
+	sub	%o0, 64, %o0
+	ldda	[%o1] %asi, %f0
+	ldda	[%o2] %asi, %f16
+
+4:	ldda	[%o3] %asi, %f32
+	fxor	%f0, %f16, %f16
+	fxor	%f2, %f18, %f18
+	add	%o1, 64, %o1
+	fxor	%f4, %f20, %f20
+	fxor	%f6, %f22, %f22
+	add	%o2, 64, %o2
+	fxor	%f8, %f24, %f24
+	fxor	%f10, %f26, %f26
+	fxor	%f12, %f28, %f28
+	fxor	%f14, %f30, %f30
+	ldda	[%o4] %asi, %f48
+	fxor	%f16, %f32, %f32
+	fxor	%f18, %f34, %f34
+	fxor	%f20, %f36, %f36
+	fxor	%f22, %f38, %f38
+	add	%o3, 64, %o3
+	fxor	%f24, %f40, %f40
+	fxor	%f26, %f42, %f42
+	fxor	%f28, %f44, %f44
+	fxor	%f30, %f46, %f46
+	ldda	[%o1] %asi, %f0
+	fxor	%f32, %f48, %f48
+	fxor	%f34, %f50, %f50
+	fxor	%f36, %f52, %f52
+	add	%o4, 64, %o4
+	fxor	%f38, %f54, %f54
+	fxor	%f40, %f56, %f56
+	fxor	%f42, %f58, %f58
+	subcc	%o0, 64, %o0
+	fxor	%f44, %f60, %f60
+	fxor	%f46, %f62, %f62
+	stda	%f48, [%o1 - 64] %asi
+	bne,pt	%xcc, 4b
+	 ldda	[%o2] %asi, %f16
+
+	ldda	[%o3] %asi, %f32
+	fxor	%f0, %f16, %f16
+	fxor	%f2, %f18, %f18
+	fxor	%f4, %f20, %f20
+	fxor	%f6, %f22, %f22
+	fxor	%f8, %f24, %f24
+	fxor	%f10, %f26, %f26
+	fxor	%f12, %f28, %f28
+	fxor	%f14, %f30, %f30
+	ldda	[%o4] %asi, %f48
+	fxor	%f16, %f32, %f32
+	fxor	%f18, %f34, %f34
+	fxor	%f20, %f36, %f36
+	fxor	%f22, %f38, %f38
+	fxor	%f24, %f40, %f40
+	fxor	%f26, %f42, %f42
+	fxor	%f28, %f44, %f44
+	fxor	%f30, %f46, %f46
+	membar	#Sync
+	fxor	%f32, %f48, %f48
+	fxor	%f34, %f50, %f50
+	fxor	%f36, %f52, %f52
+	fxor	%f38, %f54, %f54
+	fxor	%f40, %f56, %f56
+	fxor	%f42, %f58, %f58
+	fxor	%f44, %f60, %f60
+	fxor	%f46, %f62, %f62
+	stda	%f48, [%o1] %asi
+	membar	#Sync|#StoreStore|#StoreLoad
+	wr	%g1, %g0, %asi
+	retl
+	 wr	%g0, 0, %fprs
+ENDPROC(xor_vis_4)
+EXPORT_SYMBOL(xor_vis_4)
+
+ENTRY(xor_vis_5)
+	save	%sp, -192, %sp
+	rd	%fprs, %o5
+	andcc	%o5, FPRS_FEF|FPRS_DU, %g0
+	be,pt	%icc, 0f
+	 sethi	%hi(VISenter), %g1
+	jmpl	%g1 + %lo(VISenter), %g7
+	 add	%g7, 8, %g7
+0:	wr	%g0, FPRS_FEF, %fprs
+	rd	%asi, %g1
+	wr	%g0, ASI_BLK_P, %asi
+	membar	#LoadStore|#StoreLoad|#StoreStore
+	sub	%i0, 64, %i0
+	ldda	[%i1] %asi, %f0
+	ldda	[%i2] %asi, %f16
+
+5:	ldda	[%i3] %asi, %f32
+	fxor	%f0, %f16, %f48
+	fxor	%f2, %f18, %f50
+	add	%i1, 64, %i1
+	fxor	%f4, %f20, %f52
+	fxor	%f6, %f22, %f54
+	add	%i2, 64, %i2
+	fxor	%f8, %f24, %f56
+	fxor	%f10, %f26, %f58
+	fxor	%f12, %f28, %f60
+	fxor	%f14, %f30, %f62
+	ldda	[%i4] %asi, %f16
+	fxor	%f48, %f32, %f48
+	fxor	%f50, %f34, %f50
+	fxor	%f52, %f36, %f52
+	fxor	%f54, %f38, %f54
+	add	%i3, 64, %i3
+	fxor	%f56, %f40, %f56
+	fxor	%f58, %f42, %f58
+	fxor	%f60, %f44, %f60
+	fxor	%f62, %f46, %f62
+	ldda	[%i5] %asi, %f32
+	fxor	%f48, %f16, %f48
+	fxor	%f50, %f18, %f50
+	add	%i4, 64, %i4
+	fxor	%f52, %f20, %f52
+	fxor	%f54, %f22, %f54
+	add	%i5, 64, %i5
+	fxor	%f56, %f24, %f56
+	fxor	%f58, %f26, %f58
+	fxor	%f60, %f28, %f60
+	fxor	%f62, %f30, %f62
+	ldda	[%i1] %asi, %f0
+	fxor	%f48, %f32, %f48
+	fxor	%f50, %f34, %f50
+	fxor	%f52, %f36, %f52
+	fxor	%f54, %f38, %f54
+	fxor	%f56, %f40, %f56
+	fxor	%f58, %f42, %f58
+	subcc	%i0, 64, %i0
+	fxor	%f60, %f44, %f60
+	fxor	%f62, %f46, %f62
+	stda	%f48, [%i1 - 64] %asi
+	bne,pt	%xcc, 5b
+	 ldda	[%i2] %asi, %f16
+
+	ldda	[%i3] %asi, %f32
+	fxor	%f0, %f16, %f48
+	fxor	%f2, %f18, %f50
+	fxor	%f4, %f20, %f52
+	fxor	%f6, %f22, %f54
+	fxor	%f8, %f24, %f56
+	fxor	%f10, %f26, %f58
+	fxor	%f12, %f28, %f60
+	fxor	%f14, %f30, %f62
+	ldda	[%i4] %asi, %f16
+	fxor	%f48, %f32, %f48
+	fxor	%f50, %f34, %f50
+	fxor	%f52, %f36, %f52
+	fxor	%f54, %f38, %f54
+	fxor	%f56, %f40, %f56
+	fxor	%f58, %f42, %f58
+	fxor	%f60, %f44, %f60
+	fxor	%f62, %f46, %f62
+	ldda	[%i5] %asi, %f32
+	fxor	%f48, %f16, %f48
+	fxor	%f50, %f18, %f50
+	fxor	%f52, %f20, %f52
+	fxor	%f54, %f22, %f54
+	fxor	%f56, %f24, %f56
+	fxor	%f58, %f26, %f58
+	fxor	%f60, %f28, %f60
+	fxor	%f62, %f30, %f62
+	membar	#Sync
+	fxor	%f48, %f32, %f48
+	fxor	%f50, %f34, %f50
+	fxor	%f52, %f36, %f52
+	fxor	%f54, %f38, %f54
+	fxor	%f56, %f40, %f56
+	fxor	%f58, %f42, %f58
+	fxor	%f60, %f44, %f60
+	fxor	%f62, %f46, %f62
+	stda	%f48, [%i1] %asi
+	membar	#Sync|#StoreStore|#StoreLoad
+	wr	%g1, %g0, %asi
+	wr	%g0, 0, %fprs
+	ret
+	 restore
+ENDPROC(xor_vis_5)
+EXPORT_SYMBOL(xor_vis_5)
+
+	/* Niagara versions. */
+ENTRY(xor_niagara_2) /* %o0=bytes, %o1=dest, %o2=src */
+	save		%sp, -192, %sp
+	prefetch	[%i1], #n_writes
+	prefetch	[%i2], #one_read
+	rd		%asi, %g7
+	wr		%g0, ASI_BLK_INIT_QUAD_LDD_P, %asi
+	srlx		%i0, 6, %g1
+	mov		%i1, %i0
+	mov		%i2, %i1
+1:	ldda		[%i1 + 0x00] %asi, %i2	/* %i2/%i3 = src  + 0x00 */
+	ldda		[%i1 + 0x10] %asi, %i4	/* %i4/%i5 = src  + 0x10 */
+	ldda		[%i1 + 0x20] %asi, %g2	/* %g2/%g3 = src  + 0x20 */
+	ldda		[%i1 + 0x30] %asi, %l0	/* %l0/%l1 = src  + 0x30 */
+	prefetch	[%i1 + 0x40], #one_read
+	ldda		[%i0 + 0x00] %asi, %o0  /* %o0/%o1 = dest + 0x00 */
+	ldda		[%i0 + 0x10] %asi, %o2  /* %o2/%o3 = dest + 0x10 */
+	ldda		[%i0 + 0x20] %asi, %o4  /* %o4/%o5 = dest + 0x20 */
+	ldda		[%i0 + 0x30] %asi, %l2  /* %l2/%l3 = dest + 0x30 */
+	prefetch	[%i0 + 0x40], #n_writes
+	xor		%o0, %i2, %o0
+	xor		%o1, %i3, %o1
+	stxa		%o0, [%i0 + 0x00] %asi
+	stxa		%o1, [%i0 + 0x08] %asi
+	xor		%o2, %i4, %o2
+	xor		%o3, %i5, %o3
+	stxa		%o2, [%i0 + 0x10] %asi
+	stxa		%o3, [%i0 + 0x18] %asi
+	xor		%o4, %g2, %o4
+	xor		%o5, %g3, %o5
+	stxa		%o4, [%i0 + 0x20] %asi
+	stxa		%o5, [%i0 + 0x28] %asi
+	xor		%l2, %l0, %l2
+	xor		%l3, %l1, %l3
+	stxa		%l2, [%i0 + 0x30] %asi
+	stxa		%l3, [%i0 + 0x38] %asi
+	add		%i0, 0x40, %i0
+	subcc		%g1, 1, %g1
+	bne,pt		%xcc, 1b
+	 add		%i1, 0x40, %i1
+	membar		#Sync
+	wr		%g7, 0x0, %asi
+	ret
+	 restore
+ENDPROC(xor_niagara_2)
+EXPORT_SYMBOL(xor_niagara_2)
+
+ENTRY(xor_niagara_3) /* %o0=bytes, %o1=dest, %o2=src1, %o3=src2 */
+	save		%sp, -192, %sp
+	prefetch	[%i1], #n_writes
+	prefetch	[%i2], #one_read
+	prefetch	[%i3], #one_read
+	rd		%asi, %g7
+	wr		%g0, ASI_BLK_INIT_QUAD_LDD_P, %asi
+	srlx		%i0, 6, %g1
+	mov		%i1, %i0
+	mov		%i2, %i1
+	mov		%i3, %l7
+1:	ldda		[%i1 + 0x00] %asi, %i2	/* %i2/%i3 = src1 + 0x00 */
+	ldda		[%i1 + 0x10] %asi, %i4	/* %i4/%i5 = src1 + 0x10 */
+	ldda		[%l7 + 0x00] %asi, %g2	/* %g2/%g3 = src2 + 0x00 */
+	ldda		[%l7 + 0x10] %asi, %l0	/* %l0/%l1 = src2 + 0x10 */
+	ldda		[%i0 + 0x00] %asi, %o0  /* %o0/%o1 = dest + 0x00 */
+	ldda		[%i0 + 0x10] %asi, %o2  /* %o2/%o3 = dest + 0x10 */
+	xor		%g2, %i2, %g2
+	xor		%g3, %i3, %g3
+	xor		%o0, %g2, %o0
+	xor		%o1, %g3, %o1
+	stxa		%o0, [%i0 + 0x00] %asi
+	stxa		%o1, [%i0 + 0x08] %asi
+	ldda		[%i1 + 0x20] %asi, %i2	/* %i2/%i3 = src1 + 0x20 */
+	ldda		[%l7 + 0x20] %asi, %g2	/* %g2/%g3 = src2 + 0x20 */
+	ldda		[%i0 + 0x20] %asi, %o0	/* %o0/%o1 = dest + 0x20 */
+	xor		%l0, %i4, %l0
+	xor		%l1, %i5, %l1
+	xor		%o2, %l0, %o2
+	xor		%o3, %l1, %o3
+	stxa		%o2, [%i0 + 0x10] %asi
+	stxa		%o3, [%i0 + 0x18] %asi
+	ldda		[%i1 + 0x30] %asi, %i4	/* %i4/%i5 = src1 + 0x30 */
+	ldda		[%l7 + 0x30] %asi, %l0	/* %l0/%l1 = src2 + 0x30 */
+	ldda		[%i0 + 0x30] %asi, %o2	/* %o2/%o3 = dest + 0x30 */
+	prefetch	[%i1 + 0x40], #one_read
+	prefetch	[%l7 + 0x40], #one_read
+	prefetch	[%i0 + 0x40], #n_writes
+	xor		%g2, %i2, %g2
+	xor		%g3, %i3, %g3
+	xor		%o0, %g2, %o0
+	xor		%o1, %g3, %o1
+	stxa		%o0, [%i0 + 0x20] %asi
+	stxa		%o1, [%i0 + 0x28] %asi
+	xor		%l0, %i4, %l0
+	xor		%l1, %i5, %l1
+	xor		%o2, %l0, %o2
+	xor		%o3, %l1, %o3
+	stxa		%o2, [%i0 + 0x30] %asi
+	stxa		%o3, [%i0 + 0x38] %asi
+	add		%i0, 0x40, %i0
+	add		%i1, 0x40, %i1
+	subcc		%g1, 1, %g1
+	bne,pt		%xcc, 1b
+	 add		%l7, 0x40, %l7
+	membar		#Sync
+	wr		%g7, 0x0, %asi
+	ret
+	 restore
+ENDPROC(xor_niagara_3)
+EXPORT_SYMBOL(xor_niagara_3)
+
+ENTRY(xor_niagara_4) /* %o0=bytes, %o1=dest, %o2=src1, %o3=src2, %o4=src3 */
+	save		%sp, -192, %sp
+	prefetch	[%i1], #n_writes
+	prefetch	[%i2], #one_read
+	prefetch	[%i3], #one_read
+	prefetch	[%i4], #one_read
+	rd		%asi, %g7
+	wr		%g0, ASI_BLK_INIT_QUAD_LDD_P, %asi
+	srlx		%i0, 6, %g1
+	mov		%i1, %i0
+	mov		%i2, %i1
+	mov		%i3, %l7
+	mov		%i4, %l6
+1:	ldda		[%i1 + 0x00] %asi, %i2	/* %i2/%i3 = src1 + 0x00 */
+	ldda		[%l7 + 0x00] %asi, %i4	/* %i4/%i5 = src2 + 0x00 */
+	ldda		[%l6 + 0x00] %asi, %g2	/* %g2/%g3 = src3 + 0x00 */
+	ldda		[%i0 + 0x00] %asi, %l0	/* %l0/%l1 = dest + 0x00 */
+	xor		%i4, %i2, %i4
+	xor		%i5, %i3, %i5
+	ldda		[%i1 + 0x10] %asi, %i2	/* %i2/%i3 = src1 + 0x10 */
+	xor		%g2, %i4, %g2
+	xor		%g3, %i5, %g3
+	ldda		[%l7 + 0x10] %asi, %i4	/* %i4/%i5 = src2 + 0x10 */
+	xor		%l0, %g2, %l0
+	xor		%l1, %g3, %l1
+	stxa		%l0, [%i0 + 0x00] %asi
+	stxa		%l1, [%i0 + 0x08] %asi
+	ldda		[%l6 + 0x10] %asi, %g2	/* %g2/%g3 = src3 + 0x10 */
+	ldda		[%i0 + 0x10] %asi, %l0	/* %l0/%l1 = dest + 0x10 */
+
+	xor		%i4, %i2, %i4
+	xor		%i5, %i3, %i5
+	ldda		[%i1 + 0x20] %asi, %i2	/* %i2/%i3 = src1 + 0x20 */
+	xor		%g2, %i4, %g2
+	xor		%g3, %i5, %g3
+	ldda		[%l7 + 0x20] %asi, %i4	/* %i4/%i5 = src2 + 0x20 */
+	xor		%l0, %g2, %l0
+	xor		%l1, %g3, %l1
+	stxa		%l0, [%i0 + 0x10] %asi
+	stxa		%l1, [%i0 + 0x18] %asi
+	ldda		[%l6 + 0x20] %asi, %g2	/* %g2/%g3 = src3 + 0x20 */
+	ldda		[%i0 + 0x20] %asi, %l0	/* %l0/%l1 = dest + 0x20 */
+
+	xor		%i4, %i2, %i4
+	xor		%i5, %i3, %i5
+	ldda		[%i1 + 0x30] %asi, %i2	/* %i2/%i3 = src1 + 0x30 */
+	xor		%g2, %i4, %g2
+	xor		%g3, %i5, %g3
+	ldda		[%l7 + 0x30] %asi, %i4	/* %i4/%i5 = src2 + 0x30 */
+	xor		%l0, %g2, %l0
+	xor		%l1, %g3, %l1
+	stxa		%l0, [%i0 + 0x20] %asi
+	stxa		%l1, [%i0 + 0x28] %asi
+	ldda		[%l6 + 0x30] %asi, %g2	/* %g2/%g3 = src3 + 0x30 */
+	ldda		[%i0 + 0x30] %asi, %l0	/* %l0/%l1 = dest + 0x30 */
+
+	prefetch	[%i1 + 0x40], #one_read
+	prefetch	[%l7 + 0x40], #one_read
+	prefetch	[%l6 + 0x40], #one_read
+	prefetch	[%i0 + 0x40], #n_writes
+
+	xor		%i4, %i2, %i4
+	xor		%i5, %i3, %i5
+	xor		%g2, %i4, %g2
+	xor		%g3, %i5, %g3
+	xor		%l0, %g2, %l0
+	xor		%l1, %g3, %l1
+	stxa		%l0, [%i0 + 0x30] %asi
+	stxa		%l1, [%i0 + 0x38] %asi
+
+	add		%i0, 0x40, %i0
+	add		%i1, 0x40, %i1
+	add		%l7, 0x40, %l7
+	subcc		%g1, 1, %g1
+	bne,pt		%xcc, 1b
+	 add		%l6, 0x40, %l6
+	membar		#Sync
+	wr		%g7, 0x0, %asi
+	ret
+	 restore
+ENDPROC(xor_niagara_4)
+EXPORT_SYMBOL(xor_niagara_4)
+
+ENTRY(xor_niagara_5) /* %o0=bytes, %o1=dest, %o2=src1, %o3=src2, %o4=src3, %o5=src4 */
+	save		%sp, -192, %sp
+	prefetch	[%i1], #n_writes
+	prefetch	[%i2], #one_read
+	prefetch	[%i3], #one_read
+	prefetch	[%i4], #one_read
+	prefetch	[%i5], #one_read
+	rd		%asi, %g7
+	wr		%g0, ASI_BLK_INIT_QUAD_LDD_P, %asi
+	srlx		%i0, 6, %g1
+	mov		%i1, %i0
+	mov		%i2, %i1
+	mov		%i3, %l7
+	mov		%i4, %l6
+	mov		%i5, %l5
+1:	ldda		[%i1 + 0x00] %asi, %i2	/* %i2/%i3 = src1 + 0x00 */
+	ldda		[%l7 + 0x00] %asi, %i4	/* %i4/%i5 = src2 + 0x00 */
+	ldda		[%l6 + 0x00] %asi, %g2	/* %g2/%g3 = src3 + 0x00 */
+	ldda		[%l5 + 0x00] %asi, %l0	/* %l0/%l1 = src4 + 0x00 */
+	ldda		[%i0 + 0x00] %asi, %l2	/* %l2/%l3 = dest + 0x00 */
+	xor		%i4, %i2, %i4
+	xor		%i5, %i3, %i5
+	ldda		[%i1 + 0x10] %asi, %i2	/* %i2/%i3 = src1 + 0x10 */
+	xor		%g2, %i4, %g2
+	xor		%g3, %i5, %g3
+	ldda		[%l7 + 0x10] %asi, %i4	/* %i4/%i5 = src2 + 0x10 */
+	xor		%l0, %g2, %l0
+	xor		%l1, %g3, %l1
+	ldda		[%l6 + 0x10] %asi, %g2	/* %g2/%g3 = src3 + 0x10 */
+	xor		%l2, %l0, %l2
+	xor		%l3, %l1, %l3
+	stxa		%l2, [%i0 + 0x00] %asi
+	stxa		%l3, [%i0 + 0x08] %asi
+	ldda		[%l5 + 0x10] %asi, %l0	/* %l0/%l1 = src4 + 0x10 */
+	ldda		[%i0 + 0x10] %asi, %l2	/* %l2/%l3 = dest + 0x10 */
+
+	xor		%i4, %i2, %i4
+	xor		%i5, %i3, %i5
+	ldda		[%i1 + 0x20] %asi, %i2	/* %i2/%i3 = src1 + 0x20 */
+	xor		%g2, %i4, %g2
+	xor		%g3, %i5, %g3
+	ldda		[%l7 + 0x20] %asi, %i4	/* %i4/%i5 = src2 + 0x20 */
+	xor		%l0, %g2, %l0
+	xor		%l1, %g3, %l1
+	ldda		[%l6 + 0x20] %asi, %g2	/* %g2/%g3 = src3 + 0x20 */
+	xor		%l2, %l0, %l2
+	xor		%l3, %l1, %l3
+	stxa		%l2, [%i0 + 0x10] %asi
+	stxa		%l3, [%i0 + 0x18] %asi
+	ldda		[%l5 + 0x20] %asi, %l0	/* %l0/%l1 = src4 + 0x20 */
+	ldda		[%i0 + 0x20] %asi, %l2	/* %l2/%l3 = dest + 0x20 */
+
+	xor		%i4, %i2, %i4
+	xor		%i5, %i3, %i5
+	ldda		[%i1 + 0x30] %asi, %i2	/* %i2/%i3 = src1 + 0x30 */
+	xor		%g2, %i4, %g2
+	xor		%g3, %i5, %g3
+	ldda		[%l7 + 0x30] %asi, %i4	/* %i4/%i5 = src2 + 0x30 */
+	xor		%l0, %g2, %l0
+	xor		%l1, %g3, %l1
+	ldda		[%l6 + 0x30] %asi, %g2	/* %g2/%g3 = src3 + 0x30 */
+	xor		%l2, %l0, %l2
+	xor		%l3, %l1, %l3
+	stxa		%l2, [%i0 + 0x20] %asi
+	stxa		%l3, [%i0 + 0x28] %asi
+	ldda		[%l5 + 0x30] %asi, %l0	/* %l0/%l1 = src4 + 0x30 */
+	ldda		[%i0 + 0x30] %asi, %l2	/* %l2/%l3 = dest + 0x30 */
+
+	prefetch	[%i1 + 0x40], #one_read
+	prefetch	[%l7 + 0x40], #one_read
+	prefetch	[%l6 + 0x40], #one_read
+	prefetch	[%l5 + 0x40], #one_read
+	prefetch	[%i0 + 0x40], #n_writes
+
+	xor		%i4, %i2, %i4
+	xor		%i5, %i3, %i5
+	xor		%g2, %i4, %g2
+	xor		%g3, %i5, %g3
+	xor		%l0, %g2, %l0
+	xor		%l1, %g3, %l1
+	xor		%l2, %l0, %l2
+	xor		%l3, %l1, %l3
+	stxa		%l2, [%i0 + 0x30] %asi
+	stxa		%l3, [%i0 + 0x38] %asi
+
+	add		%i0, 0x40, %i0
+	add		%i1, 0x40, %i1
+	add		%l7, 0x40, %l7
+	add		%l6, 0x40, %l6
+	subcc		%g1, 1, %g1
+	bne,pt		%xcc, 1b
+	 add		%l5, 0x40, %l5
+	membar		#Sync
+	wr		%g7, 0x0, %asi
+	ret
+	 restore
+ENDPROC(xor_niagara_5)
+EXPORT_SYMBOL(xor_niagara_5)