Merge branch 'sparc64-M7-memcpy'

Babu Moger says:

====================
sparc64: Update memcpy, memset etc. for M7/M8 architectures

This series of patches updates the memcpy, memset, copy_to_user, copy_from_user
etc for SPARC M7/M8 architecture.

New algorithm here takes advantage of the M7/M8 block init store ASIs, with much
more optimized way to improve the performance. More detail are in code comments.

Tested and compared the latency measured in ticks(NG4memcpy vs new M7memcpy).

1. Memset numbers(Aligned memset)

No.of bytes NG4memset M7memset Delta ((B-A)/A)*100
(Avg.Ticks A) (Avg.Ticks B) (latency reduction)
3 77 25 -67.53
7 43 33 -23.25
32 72 68 -5.55
128 164 44 -73.17
256 335 68 -79.70
512 511 220 -56.94
1024 1552 627 -59.60
2048 3515 1322 -62.38
4096 6303 2472 -60.78
8192 13118 4867 -62.89
16384 26206 10371 -60.42
32768 52501 18569 -64.63
65536 100219 35899 -64.17

2. Memcpy numbers(Aligned memcpy)

No.of bytes NG4memcpy M7memcpy Delta ((B-A)/A)*100
(Avg.Ticks A) (Avg.Ticks B) (latency reduction)
3 20 19 -5
7 29 27 -6.89
32 30 28 -6.66
128 89 69 -22.47
256 142 143 0.70
512 341 283 -17.00
1024 1588 655 -58.75
2048 3553 1357 -61.80
4096 7218 2590 -64.11
8192 13701 5231 -61.82
16384 28304 10716 -62.13
32768 56516 22995 -59.31
65536 115443 50840 -55.96

3. Memset numbers(un-aligned memset)

No.of bytes NG4memset M7memset Delta ((B-A)/A)*100
(Avg.Ticks A) (Avg.Ticks B) (latency reduction)
3 40 31 -22.5
7 52 29 -44.2307692308
32 89 86 -3.3707865169
128 201 74 -63.184079602
256 340 154 -54.7058823529
512 961 335 -65.1404786681
1024 1799 686 -61.8677042802
2048 3575 1260 -64.7552447552
4096 6560 2627 -59.9542682927
8192 13161 6018 -54.273991338
16384 26465 10439 -60.5554505951
32768 52119 18649 -64.2184232238
65536 101593 35724 -64.8361599717

4. Memcpy numbers(un-aligned memcpy)

No.of bytes NG4memcpy M7memcpy Delta ((B-A)/A)*100
(Avg.Ticks A) (Avg.Ticks B) (latency reduction)
3 26 19 -26.9230769231
7 48 45 -6.25
32 52 49 -5.7692307692
128 284 334 17.6056338028
256 430 482 12.0930232558
512 646 690 6.8111455108
1024 1051 1016 -3.3301617507
2048 1787 1818 1.7347509793
4096 3309 3376 2.0247809006
8192 8151 7444 -8.673782358
16384 34222 34556 0.9759803635
32768 87851 95044 8.1877269468
65536 158331 159572 0.7838010244

There is not much difference in numbers with Un-aligned copies
between NG4memcpy and M7memcpy because they both mostly use the
same algorithems.

v2:
1. Fixed indentation issues found by David Miller
2. Used ENTRY and ENDPROC for the labels in M7patch.S as suggested by David Miller
3. Now M8 also will use M7memcpy. Also tested on M8 config.
4. These patches are created on top of below M8 patches
https://patchwork.ozlabs.org/patch/792661/
https://patchwork.ozlabs.org/patch/792662/
However, I did not see these patches in sparc-next tree. It may be in queue now.
It is possible these patches might cause some build problems. It will resolve
once all M8 patches are in sparc-next tree.

v0: Initial version
====================

Signed-off-by: David S. Miller <[e-mail]>

arch/sparc/kernel/head_64.S

···
 	be,pt	%xcc, niagara4_patch
 	 nop
 	cmp	%g1, SUN4V_CHIP_SPARC_M7
-	be,pt	%xcc, niagara4_patch
+	be,pt	%xcc, sparc_m7_patch
 	 nop
 	cmp	%g1, SUN4V_CHIP_SPARC_M8
-	be,pt	%xcc, niagara4_patch
+	be,pt	%xcc, sparc_m7_patch
 	 nop
 	cmp	%g1, SUN4V_CHIP_SPARC_SN
 	be,pt	%xcc, niagara4_patch
···
 
 	ba,a,pt	%xcc, 80f
 	 nop
+
+sparc_m7_patch:
+	call	m7_patch_copyops
+	 nop
+	call	m7_patch_bzero
+	 nop
+	call	m7_patch_pageops
+	 nop
+
+	ba,a,pt	%xcc, 80f
+	 nop
+
 niagara4_patch:
 	call	niagara4_patch_copyops
 	 nop

arch/sparc/lib/M7copy_from_user.S

···
+/*
+ * 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"

arch/sparc/lib/M7copy_to_user.S

···
+/*
+ * 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"

arch/sparc/lib/M7memcpy.S

···
+/*
+ * 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

arch/sparc/lib/M7memset.S

···
+/*
+ * 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

arch/sparc/lib/M7patch.S

···
+/*
+ * 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)

arch/sparc/lib/Makefile

···
 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
 

arch/sparc/lib/Memcpy_utils.S

···
+#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

arch/sparc/lib/NG4memcpy.S

···
 	.text
 #ifndef EX_RETVAL
 #define EX_RETVAL(x)	x
-__restore_asi_fp:
-	VISExitHalf
-__restore_asi:
-	retl
-	 wr	%g0, ASI_AIUS, %asi
-
-ENTRY(NG4_retl_o2)
-	ba,pt	%xcc, __restore_asi
-	 mov	%o2, %o0
-ENDPROC(NG4_retl_o2)
-ENTRY(NG4_retl_o2_plus_1)
-	ba,pt	%xcc, __restore_asi
-	 add	%o2, 1, %o0
-ENDPROC(NG4_retl_o2_plus_1)
-ENTRY(NG4_retl_o2_plus_4)
-	ba,pt	%xcc, __restore_asi
-	 add	%o2, 4, %o0
-ENDPROC(NG4_retl_o2_plus_4)
-ENTRY(NG4_retl_o2_plus_o5)
-	ba,pt	%xcc, __restore_asi
-	 add	%o2, %o5, %o0
-ENDPROC(NG4_retl_o2_plus_o5)
-ENTRY(NG4_retl_o2_plus_o5_plus_4)
-	add	%o5, 4, %o5
-	ba,pt	%xcc, __restore_asi
-	 add	%o2, %o5, %o0
-ENDPROC(NG4_retl_o2_plus_o5_plus_4)
-ENTRY(NG4_retl_o2_plus_o5_plus_8)
-	add	%o5, 8, %o5
-	ba,pt	%xcc, __restore_asi
-	 add	%o2, %o5, %o0
-ENDPROC(NG4_retl_o2_plus_o5_plus_8)
-ENTRY(NG4_retl_o2_plus_o5_plus_16)
-	add	%o5, 16, %o5
-	ba,pt	%xcc, __restore_asi
-	 add	%o2, %o5, %o0
-ENDPROC(NG4_retl_o2_plus_o5_plus_16)
-ENTRY(NG4_retl_o2_plus_o5_plus_24)
-	add	%o5, 24, %o5
-	ba,pt	%xcc, __restore_asi
-	 add	%o2, %o5, %o0
-ENDPROC(NG4_retl_o2_plus_o5_plus_24)
-ENTRY(NG4_retl_o2_plus_o5_plus_32)
-	add	%o5, 32, %o5
-	ba,pt	%xcc, __restore_asi
-	 add	%o2, %o5, %o0
-ENDPROC(NG4_retl_o2_plus_o5_plus_32)
-ENTRY(NG4_retl_o2_plus_g1)
-	ba,pt	%xcc, __restore_asi
-	 add	%o2, %g1, %o0
-ENDPROC(NG4_retl_o2_plus_g1)
-ENTRY(NG4_retl_o2_plus_g1_plus_1)
-	add	%g1, 1, %g1
-	ba,pt	%xcc, __restore_asi
-	 add	%o2, %g1, %o0
-ENDPROC(NG4_retl_o2_plus_g1_plus_1)
-ENTRY(NG4_retl_o2_plus_g1_plus_8)
-	add	%g1, 8, %g1
-	ba,pt	%xcc, __restore_asi
-	 add	%o2, %g1, %o0
-ENDPROC(NG4_retl_o2_plus_g1_plus_8)
-ENTRY(NG4_retl_o2_plus_o4)
-	ba,pt	%xcc, __restore_asi
-	 add	%o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4)
-ENTRY(NG4_retl_o2_plus_o4_plus_8)
-	add	%o4, 8, %o4
-	ba,pt	%xcc, __restore_asi
-	 add	%o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_plus_8)
-ENTRY(NG4_retl_o2_plus_o4_plus_16)
-	add	%o4, 16, %o4
-	ba,pt	%xcc, __restore_asi
-	 add	%o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_plus_16)
-ENTRY(NG4_retl_o2_plus_o4_plus_24)
-	add	%o4, 24, %o4
-	ba,pt	%xcc, __restore_asi
-	 add	%o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_plus_24)
-ENTRY(NG4_retl_o2_plus_o4_plus_32)
-	add	%o4, 32, %o4
-	ba,pt	%xcc, __restore_asi
-	 add	%o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_plus_32)
-ENTRY(NG4_retl_o2_plus_o4_plus_40)
-	add	%o4, 40, %o4
-	ba,pt	%xcc, __restore_asi
-	 add	%o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_plus_40)
-ENTRY(NG4_retl_o2_plus_o4_plus_48)
-	add	%o4, 48, %o4
-	ba,pt	%xcc, __restore_asi
-	 add	%o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_plus_48)
-ENTRY(NG4_retl_o2_plus_o4_plus_56)
-	add	%o4, 56, %o4
-	ba,pt	%xcc, __restore_asi
-	 add	%o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_plus_56)
-ENTRY(NG4_retl_o2_plus_o4_plus_64)
-	add	%o4, 64, %o4
-	ba,pt	%xcc, __restore_asi
-	 add	%o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_plus_64)
-ENTRY(NG4_retl_o2_plus_o4_fp)
-	ba,pt	%xcc, __restore_asi_fp
-	 add	%o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_fp)
-ENTRY(NG4_retl_o2_plus_o4_plus_8_fp)
-	add	%o4, 8, %o4
-	ba,pt	%xcc, __restore_asi_fp
-	 add	%o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_plus_8_fp)
-ENTRY(NG4_retl_o2_plus_o4_plus_16_fp)
-	add	%o4, 16, %o4
-	ba,pt	%xcc, __restore_asi_fp
-	 add	%o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_plus_16_fp)
-ENTRY(NG4_retl_o2_plus_o4_plus_24_fp)
-	add	%o4, 24, %o4
-	ba,pt	%xcc, __restore_asi_fp
-	 add	%o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_plus_24_fp)
-ENTRY(NG4_retl_o2_plus_o4_plus_32_fp)
-	add	%o4, 32, %o4
-	ba,pt	%xcc, __restore_asi_fp
-	 add	%o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_plus_32_fp)
-ENTRY(NG4_retl_o2_plus_o4_plus_40_fp)
-	add	%o4, 40, %o4
-	ba,pt	%xcc, __restore_asi_fp
-	 add	%o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_plus_40_fp)
-ENTRY(NG4_retl_o2_plus_o4_plus_48_fp)
-	add	%o4, 48, %o4
-	ba,pt	%xcc, __restore_asi_fp
-	 add	%o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_plus_48_fp)
-ENTRY(NG4_retl_o2_plus_o4_plus_56_fp)
-	add	%o4, 56, %o4
-	ba,pt	%xcc, __restore_asi_fp
-	 add	%o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_plus_56_fp)
-ENTRY(NG4_retl_o2_plus_o4_plus_64_fp)
-	add	%o4, 64, %o4
-	ba,pt	%xcc, __restore_asi_fp
-	 add	%o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_plus_64_fp)
 #endif
 	.align		64
 
···
 	 sub		%o2, %g1, %o2
 
 
-1:	EX_LD(LOAD(ldub, %o1 + 0x00, %g2), NG4_retl_o2_plus_g1)
+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), NG4_retl_o2_plus_g1_plus_1)
+	 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)
···
 	brz,pt		%g1, .Llarge_aligned
 	 sub		%o2, %g1, %o2
 
-1:	EX_LD(LOAD(ldx, %o1 + 0x00, %g2), NG4_retl_o2_plus_g1)
+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), NG4_retl_o2_plus_g1_plus_8)
+	 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), NG4_retl_o2_plus_o4)
+1:	EX_LD(LOAD(ldx, %o1 + 0x00, %g1), memcpy_retl_o2_plus_o4)
 	add		%o1, 0x40, %o1
-	EX_LD(LOAD(ldx, %o1 - 0x38, %g2), NG4_retl_o2_plus_o4)
+	EX_LD(LOAD(ldx, %o1 - 0x38, %g2), memcpy_retl_o2_plus_o4)
 	subcc		%o4, 0x40, %o4
-	EX_LD(LOAD(ldx, %o1 - 0x30, %g3), NG4_retl_o2_plus_o4_plus_64)
-	EX_LD(LOAD(ldx, %o1 - 0x28, GLOBAL_SPARE), NG4_retl_o2_plus_o4_plus_64)
-	EX_LD(LOAD(ldx, %o1 - 0x20, %o5), NG4_retl_o2_plus_o4_plus_64)
-	EX_ST(STORE_INIT(%g1, %o0), NG4_retl_o2_plus_o4_plus_64)
+	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), NG4_retl_o2_plus_o4_plus_56)
+	EX_ST(STORE_INIT(%g2, %o0), memcpy_retl_o2_plus_o4_plus_56)
 	add		%o0, 0x08, %o0
-	EX_LD(LOAD(ldx, %o1 - 0x18, %g2), NG4_retl_o2_plus_o4_plus_48)
-	EX_ST(STORE_INIT(%g3, %o0), NG4_retl_o2_plus_o4_plus_48)
+	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), NG4_retl_o2_plus_o4_plus_40)
-	EX_ST(STORE_INIT(GLOBAL_SPARE, %o0), NG4_retl_o2_plus_o4_plus_40)
+	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), NG4_retl_o2_plus_o4_plus_32)
-	EX_ST(STORE_INIT(%o5, %o0), NG4_retl_o2_plus_o4_plus_32)
+	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), NG4_retl_o2_plus_o4_plus_24)
+	EX_ST(STORE_INIT(%g2, %o0), memcpy_retl_o2_plus_o4_plus_24)
 	add		%o0, 0x08, %o0
-	EX_ST(STORE_INIT(%g3, %o0), NG4_retl_o2_plus_o4_plus_16)
+	EX_ST(STORE_INIT(%g3, %o0), memcpy_retl_o2_plus_o4_plus_16)
 	add		%o0, 0x08, %o0
-	EX_ST(STORE_INIT(GLOBAL_SPARE, %o0), NG4_retl_o2_plus_o4_plus_8)
+	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)
···
 	sub		%o2, %o4, %o2
 	alignaddr	%o1, %g0, %g1
 	add		%o1, %o4, %o1
-	EX_LD_FP(LOAD(ldd, %g1 + 0x00, %f0), NG4_retl_o2_plus_o4)
-1:	EX_LD_FP(LOAD(ldd, %g1 + 0x08, %f2), NG4_retl_o2_plus_o4)
+	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), NG4_retl_o2_plus_o4_plus_64)
-	EX_LD_FP(LOAD(ldd, %g1 + 0x18, %f6), NG4_retl_o2_plus_o4_plus_64)
-	EX_LD_FP(LOAD(ldd, %g1 + 0x20, %f8), NG4_retl_o2_plus_o4_plus_64)
-	EX_LD_FP(LOAD(ldd, %g1 + 0x28, %f10), NG4_retl_o2_plus_o4_plus_64)
-	EX_LD_FP(LOAD(ldd, %g1 + 0x30, %f12), NG4_retl_o2_plus_o4_plus_64)
-	EX_LD_FP(LOAD(ldd, %g1 + 0x38, %f14), NG4_retl_o2_plus_o4_plus_64)
+	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), NG4_retl_o2_plus_o4_plus_64)
+	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	%f10, %f12, %f26
 	faligndata	%f12, %f14, %f28
 	faligndata	%f14, %f0, %f30
-	EX_ST_FP(STORE(std, %f16, %o0 + 0x00), NG4_retl_o2_plus_o4_plus_64)
-	EX_ST_FP(STORE(std, %f18, %o0 + 0x08), NG4_retl_o2_plus_o4_plus_56)
-	EX_ST_FP(STORE(std, %f20, %o0 + 0x10), NG4_retl_o2_plus_o4_plus_48)
-	EX_ST_FP(STORE(std, %f22, %o0 + 0x18), NG4_retl_o2_plus_o4_plus_40)
-	EX_ST_FP(STORE(std, %f24, %o0 + 0x20), NG4_retl_o2_plus_o4_plus_32)
-	EX_ST_FP(STORE(std, %f26, %o0 + 0x28), NG4_retl_o2_plus_o4_plus_24)
-	EX_ST_FP(STORE(std, %f28, %o0 + 0x30), NG4_retl_o2_plus_o4_plus_16)
-	EX_ST_FP(STORE(std, %f30, %o0 + 0x38), NG4_retl_o2_plus_o4_plus_8)
+	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)
···
 	andncc		%o2, 0x20 - 1, %o5
 	be,pn		%icc, 2f
 	 sub		%o2, %o5, %o2
-1:	EX_LD(LOAD(ldx, %o1 + 0x00, %g1), NG4_retl_o2_plus_o5)
-	EX_LD(LOAD(ldx, %o1 + 0x08, %g2), NG4_retl_o2_plus_o5)
-	EX_LD(LOAD(ldx, %o1 + 0x10, GLOBAL_SPARE), NG4_retl_o2_plus_o5)
-	EX_LD(LOAD(ldx, %o1 + 0x18, %o4), NG4_retl_o2_plus_o5)
+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), NG4_retl_o2_plus_o5_plus_32)
-	EX_ST(STORE(stx, %g2, %o0 + 0x08), NG4_retl_o2_plus_o5_plus_24)
-	EX_ST(STORE(stx, GLOBAL_SPARE, %o0 + 0x10), NG4_retl_o2_plus_o5_plus_24)
-	EX_ST(STORE(stx, %o4, %o0 + 0x18), NG4_retl_o2_plus_o5_plus_8)
+	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), NG4_retl_o2_plus_o5)
+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), NG4_retl_o2_plus_o5_plus_8)
+	 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), NG4_retl_o2)
+	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), NG4_retl_o2_plus_4)
+	 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.  */
···
 	brz,pt		%g1, 2f
 	 sub		%o2, %g1, %o2
 
-1:	EX_LD(LOAD(ldub, %o1 + 0x00, %g2), NG4_retl_o2_plus_g1)
+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), NG4_retl_o2_plus_g1_plus_1)
+	 EX_ST(STORE(stb, %g2, %o0 - 0x01), memcpy_retl_o2_plus_g1_plus_1)
 2:
 	and		%o1, 0x7, %g1
 	brz,pn		%g1, .Lmedium_noprefetch
···
 	mov		64, %g2
 	sub		%g2, %g1, %g2
 	andn		%o1, 0x7, %o1
-	EX_LD(LOAD(ldx, %o1 + 0x00, %o4), NG4_retl_o2)
+	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), NG4_retl_o2_plus_o5)
+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), NG4_retl_o2_plus_o5_plus_8)
+	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
···
 	ba,pt		%icc, .Lsmall_unaligned
 
 .Ltiny:
-	EX_LD(LOAD(ldub, %o1 + 0x00, %g1), NG4_retl_o2)
+	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), NG4_retl_o2_plus_1)
-	EX_LD(LOAD(ldub, %o1 + 0x01, %g1), NG4_retl_o2)
+	 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), NG4_retl_o2_plus_1)
-	EX_LD(LOAD(ldub, %o1 + 0x02, %g1), NG4_retl_o2)
+	 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), NG4_retl_o2)
+	 EX_ST(STORE(stb, %g1, %o0 + 0x02), memcpy_retl_o2)
 
 .Lsmall:
 	andcc		%g2, 0x3, %g0
···
 	 andn		%o2, 0x4 - 1, %o5
 	sub		%o2, %o5, %o2
 1:
-	EX_LD(LOAD(lduw, %o1 + 0x00, %g1), NG4_retl_o2_plus_o5)
+	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), NG4_retl_o2_plus_o5_plus_4)
+	 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), NG4_retl_o2)
+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), NG4_retl_o2_plus_1)
+	 EX_ST(STORE(stb, %g1, %o0 - 0x01), memcpy_retl_o2_plus_1)
 	ba,a,pt		%icc, .Lexit
 	 nop
 	.size		FUNC_NAME, .-FUNC_NAME