xref: /linux/arch/sparc/lib/NG4memcpy.S (revision 1ab326934fa1a16f776b014ba482c1be08a205a1)
1ae2c6ca6SDavid S. Miller/* NG4memcpy.S: Niagara-4 optimized memcpy.
2ae2c6ca6SDavid S. Miller *
3ae2c6ca6SDavid S. Miller * Copyright (C) 2012 David S. Miller (davem@davemloft.net)
4ae2c6ca6SDavid S. Miller */
5ae2c6ca6SDavid S. Miller
6ae2c6ca6SDavid S. Miller#ifdef __KERNEL__
795707704SDavid S. Miller#include <linux/linkage.h>
8ae2c6ca6SDavid S. Miller#include <asm/visasm.h>
9ae2c6ca6SDavid S. Miller#include <asm/asi.h>
10ae2c6ca6SDavid S. Miller#define GLOBAL_SPARE	%g7
11ae2c6ca6SDavid S. Miller#else
12ae2c6ca6SDavid S. Miller#define ASI_BLK_INIT_QUAD_LDD_P 0xe2
13ae2c6ca6SDavid S. Miller#define FPRS_FEF  0x04
14ae2c6ca6SDavid S. Miller
15ae2c6ca6SDavid S. Miller/* On T4 it is very expensive to access ASRs like %fprs and
16ae2c6ca6SDavid S. Miller * %asi, avoiding a read or a write can save ~50 cycles.
17ae2c6ca6SDavid S. Miller */
18ae2c6ca6SDavid S. Miller#define FPU_ENTER			\
19ae2c6ca6SDavid S. Miller	rd	%fprs, %o5;		\
20ae2c6ca6SDavid S. Miller	andcc	%o5, FPRS_FEF, %g0;	\
21ae2c6ca6SDavid S. Miller	be,a,pn	%icc, 999f;		\
22ae2c6ca6SDavid S. Miller	 wr	%g0, FPRS_FEF, %fprs;	\
23ae2c6ca6SDavid S. Miller	999:
24ae2c6ca6SDavid S. Miller
25ae2c6ca6SDavid S. Miller#ifdef MEMCPY_DEBUG
26ae2c6ca6SDavid S. Miller#define VISEntryHalf FPU_ENTER; \
27ae2c6ca6SDavid S. Miller		     clr %g1; clr %g2; clr %g3; clr %g5; subcc %g0, %g0, %g0;
28ae2c6ca6SDavid S. Miller#define VISExitHalf and %o5, FPRS_FEF, %o5; wr %o5, 0x0, %fprs
29ae2c6ca6SDavid S. Miller#else
30ae2c6ca6SDavid S. Miller#define VISEntryHalf FPU_ENTER
31ae2c6ca6SDavid S. Miller#define VISExitHalf and %o5, FPRS_FEF, %o5; wr %o5, 0x0, %fprs
32ae2c6ca6SDavid S. Miller#endif
33ae2c6ca6SDavid S. Miller
34ae2c6ca6SDavid S. Miller#define GLOBAL_SPARE	%g5
35ae2c6ca6SDavid S. Miller#endif
36ae2c6ca6SDavid S. Miller
37ae2c6ca6SDavid S. Miller#ifndef STORE_ASI
38ae2c6ca6SDavid S. Miller#ifndef SIMULATE_NIAGARA_ON_NON_NIAGARA
39ae2c6ca6SDavid S. Miller#define STORE_ASI	ASI_BLK_INIT_QUAD_LDD_P
40ae2c6ca6SDavid S. Miller#else
41ae2c6ca6SDavid S. Miller#define STORE_ASI	0x80		/* ASI_P */
42ae2c6ca6SDavid S. Miller#endif
43ae2c6ca6SDavid S. Miller#endif
44ae2c6ca6SDavid S. Miller
45f4da3628SDavid S. Miller#if !defined(EX_LD) && !defined(EX_ST)
46f4da3628SDavid S. Miller#define NON_USER_COPY
47f4da3628SDavid S. Miller#endif
48f4da3628SDavid S. Miller
49ae2c6ca6SDavid S. Miller#ifndef EX_LD
5095707704SDavid S. Miller#define EX_LD(x,y)	x
51ae2c6ca6SDavid S. Miller#endif
52a7c5724bSRob Gardner#ifndef EX_LD_FP
5395707704SDavid S. Miller#define EX_LD_FP(x,y)	x
54a7c5724bSRob Gardner#endif
55ae2c6ca6SDavid S. Miller
56ae2c6ca6SDavid S. Miller#ifndef EX_ST
5795707704SDavid S. Miller#define EX_ST(x,y)	x
58ae2c6ca6SDavid S. Miller#endif
59a7c5724bSRob Gardner#ifndef EX_ST_FP
6095707704SDavid S. Miller#define EX_ST_FP(x,y)	x
61a7c5724bSRob Gardner#endif
62ae2c6ca6SDavid S. Miller
63ae2c6ca6SDavid S. Miller
64ae2c6ca6SDavid S. Miller#ifndef LOAD
65ae2c6ca6SDavid S. Miller#define LOAD(type,addr,dest)	type [addr], dest
66ae2c6ca6SDavid S. Miller#endif
67ae2c6ca6SDavid S. Miller
68ae2c6ca6SDavid S. Miller#ifndef STORE
69ae2c6ca6SDavid S. Miller#ifndef MEMCPY_DEBUG
70ae2c6ca6SDavid S. Miller#define STORE(type,src,addr)	type src, [addr]
71ae2c6ca6SDavid S. Miller#else
72ae2c6ca6SDavid S. Miller#define STORE(type,src,addr)	type##a src, [addr] %asi
73ae2c6ca6SDavid S. Miller#endif
74ae2c6ca6SDavid S. Miller#endif
75ae2c6ca6SDavid S. Miller
76ae2c6ca6SDavid S. Miller#ifndef STORE_INIT
77ae2c6ca6SDavid S. Miller#define STORE_INIT(src,addr)	stxa src, [addr] STORE_ASI
78ae2c6ca6SDavid S. Miller#endif
79ae2c6ca6SDavid S. Miller
80ae2c6ca6SDavid S. Miller#ifndef FUNC_NAME
81ae2c6ca6SDavid S. Miller#define FUNC_NAME	NG4memcpy
82ae2c6ca6SDavid S. Miller#endif
83ae2c6ca6SDavid S. Miller#ifndef PREAMBLE
84ae2c6ca6SDavid S. Miller#define PREAMBLE
85ae2c6ca6SDavid S. Miller#endif
86ae2c6ca6SDavid S. Miller
87ae2c6ca6SDavid S. Miller#ifndef XCC
88ae2c6ca6SDavid S. Miller#define XCC xcc
89ae2c6ca6SDavid S. Miller#endif
90ae2c6ca6SDavid S. Miller
91ae2c6ca6SDavid S. Miller	.register	%g2,#scratch
92ae2c6ca6SDavid S. Miller	.register	%g3,#scratch
93ae2c6ca6SDavid S. Miller
94ae2c6ca6SDavid S. Miller	.text
9595707704SDavid S. Miller#ifndef EX_RETVAL
9695707704SDavid S. Miller#define EX_RETVAL(x)	x
9795707704SDavid S. Miller#endif
98ae2c6ca6SDavid S. Miller	.align		64
99ae2c6ca6SDavid S. Miller
100ae2c6ca6SDavid S. Miller	.globl	FUNC_NAME
101ae2c6ca6SDavid S. Miller	.type	FUNC_NAME,#function
102ae2c6ca6SDavid S. MillerFUNC_NAME:	/* %o0=dst, %o1=src, %o2=len */
103ae2c6ca6SDavid S. Miller#ifdef MEMCPY_DEBUG
104ae2c6ca6SDavid S. Miller	wr		%g0, 0x80, %asi
105ae2c6ca6SDavid S. Miller#endif
106ae2c6ca6SDavid S. Miller	srlx		%o2, 31, %g2
107ae2c6ca6SDavid S. Miller	cmp		%g2, 0
108ae2c6ca6SDavid S. Miller	tne		%XCC, 5
109ae2c6ca6SDavid S. Miller	PREAMBLE
110ae2c6ca6SDavid S. Miller	mov		%o0, %o3
111ae2c6ca6SDavid S. Miller	brz,pn		%o2, .Lexit
112ae2c6ca6SDavid S. Miller	 cmp		%o2, 3
113ae2c6ca6SDavid S. Miller	ble,pn		%icc, .Ltiny
114ae2c6ca6SDavid S. Miller	 cmp		%o2, 19
115ae2c6ca6SDavid S. Miller	ble,pn		%icc, .Lsmall
116ae2c6ca6SDavid S. Miller	 or		%o0, %o1, %g2
117ae2c6ca6SDavid S. Miller	cmp		%o2, 128
118ae2c6ca6SDavid S. Miller	bl,pn		%icc, .Lmedium
119ae2c6ca6SDavid S. Miller	 nop
120ae2c6ca6SDavid S. Miller
121ae2c6ca6SDavid S. Miller.Llarge:/* len >= 0x80 */
122ae2c6ca6SDavid S. Miller	/* First get dest 8 byte aligned.  */
123ae2c6ca6SDavid S. Miller	sub		%g0, %o0, %g1
124ae2c6ca6SDavid S. Miller	and		%g1, 0x7, %g1
125ae2c6ca6SDavid S. Miller	brz,pt		%g1, 51f
126ae2c6ca6SDavid S. Miller	 sub		%o2, %g1, %o2
127ae2c6ca6SDavid S. Miller
12895707704SDavid S. Miller
129*1ab32693SBabu Moger1:	EX_LD(LOAD(ldub, %o1 + 0x00, %g2), memcpy_retl_o2_plus_g1)
130ae2c6ca6SDavid S. Miller	add		%o1, 1, %o1
131ae2c6ca6SDavid S. Miller	subcc		%g1, 1, %g1
132ae2c6ca6SDavid S. Miller	add		%o0, 1, %o0
133ae2c6ca6SDavid S. Miller	bne,pt		%icc, 1b
134*1ab32693SBabu Moger	 EX_ST(STORE(stb, %g2, %o0 - 0x01), memcpy_retl_o2_plus_g1_plus_1)
135ae2c6ca6SDavid S. Miller
136ae2c6ca6SDavid S. Miller51:	LOAD(prefetch, %o1 + 0x040, #n_reads_strong)
137ae2c6ca6SDavid S. Miller	LOAD(prefetch, %o1 + 0x080, #n_reads_strong)
138ae2c6ca6SDavid S. Miller	LOAD(prefetch, %o1 + 0x0c0, #n_reads_strong)
139ae2c6ca6SDavid S. Miller	LOAD(prefetch, %o1 + 0x100, #n_reads_strong)
140ae2c6ca6SDavid S. Miller	LOAD(prefetch, %o1 + 0x140, #n_reads_strong)
141ae2c6ca6SDavid S. Miller	LOAD(prefetch, %o1 + 0x180, #n_reads_strong)
142ae2c6ca6SDavid S. Miller	LOAD(prefetch, %o1 + 0x1c0, #n_reads_strong)
143ae2c6ca6SDavid S. Miller	LOAD(prefetch, %o1 + 0x200, #n_reads_strong)
144ae2c6ca6SDavid S. Miller
145ae2c6ca6SDavid S. Miller	/* Check if we can use the straight fully aligned
146ae2c6ca6SDavid S. Miller	 * loop, or we require the alignaddr/faligndata variant.
147ae2c6ca6SDavid S. Miller	 */
148ae2c6ca6SDavid S. Miller	andcc		%o1, 0x7, %o5
149ae2c6ca6SDavid S. Miller	bne,pn		%icc, .Llarge_src_unaligned
150ae2c6ca6SDavid S. Miller	 sub		%g0, %o0, %g1
151ae2c6ca6SDavid S. Miller
152ae2c6ca6SDavid S. Miller	/* Legitimize the use of initializing stores by getting dest
153ae2c6ca6SDavid S. Miller	 * to be 64-byte aligned.
154ae2c6ca6SDavid S. Miller	 */
155ae2c6ca6SDavid S. Miller	and		%g1, 0x3f, %g1
156ae2c6ca6SDavid S. Miller	brz,pt		%g1, .Llarge_aligned
157ae2c6ca6SDavid S. Miller	 sub		%o2, %g1, %o2
158ae2c6ca6SDavid S. Miller
159*1ab32693SBabu Moger1:	EX_LD(LOAD(ldx, %o1 + 0x00, %g2), memcpy_retl_o2_plus_g1)
160ae2c6ca6SDavid S. Miller	add		%o1, 8, %o1
161ae2c6ca6SDavid S. Miller	subcc		%g1, 8, %g1
162ae2c6ca6SDavid S. Miller	add		%o0, 8, %o0
163ae2c6ca6SDavid S. Miller	bne,pt		%icc, 1b
164*1ab32693SBabu Moger	 EX_ST(STORE(stx, %g2, %o0 - 0x08), memcpy_retl_o2_plus_g1_plus_8)
165ae2c6ca6SDavid S. Miller
166ae2c6ca6SDavid S. Miller.Llarge_aligned:
167ae2c6ca6SDavid S. Miller	/* len >= 0x80 && src 8-byte aligned && dest 8-byte aligned */
168ae2c6ca6SDavid S. Miller	andn		%o2, 0x3f, %o4
169ae2c6ca6SDavid S. Miller	sub		%o2, %o4, %o2
170ae2c6ca6SDavid S. Miller
171*1ab32693SBabu Moger1:	EX_LD(LOAD(ldx, %o1 + 0x00, %g1), memcpy_retl_o2_plus_o4)
172ae2c6ca6SDavid S. Miller	add		%o1, 0x40, %o1
173*1ab32693SBabu Moger	EX_LD(LOAD(ldx, %o1 - 0x38, %g2), memcpy_retl_o2_plus_o4)
174ae2c6ca6SDavid S. Miller	subcc		%o4, 0x40, %o4
175*1ab32693SBabu Moger	EX_LD(LOAD(ldx, %o1 - 0x30, %g3), memcpy_retl_o2_plus_o4_plus_64)
176*1ab32693SBabu Moger	EX_LD(LOAD(ldx, %o1 - 0x28, GLOBAL_SPARE), memcpy_retl_o2_plus_o4_plus_64)
177*1ab32693SBabu Moger	EX_LD(LOAD(ldx, %o1 - 0x20, %o5), memcpy_retl_o2_plus_o4_plus_64)
178*1ab32693SBabu Moger	EX_ST(STORE_INIT(%g1, %o0), memcpy_retl_o2_plus_o4_plus_64)
179ae2c6ca6SDavid S. Miller	add		%o0, 0x08, %o0
180*1ab32693SBabu Moger	EX_ST(STORE_INIT(%g2, %o0), memcpy_retl_o2_plus_o4_plus_56)
181ae2c6ca6SDavid S. Miller	add		%o0, 0x08, %o0
182*1ab32693SBabu Moger	EX_LD(LOAD(ldx, %o1 - 0x18, %g2), memcpy_retl_o2_plus_o4_plus_48)
183*1ab32693SBabu Moger	EX_ST(STORE_INIT(%g3, %o0), memcpy_retl_o2_plus_o4_plus_48)
184ae2c6ca6SDavid S. Miller	add		%o0, 0x08, %o0
185*1ab32693SBabu Moger	EX_LD(LOAD(ldx, %o1 - 0x10, %g3), memcpy_retl_o2_plus_o4_plus_40)
186*1ab32693SBabu Moger	EX_ST(STORE_INIT(GLOBAL_SPARE, %o0), memcpy_retl_o2_plus_o4_plus_40)
187ae2c6ca6SDavid S. Miller	add		%o0, 0x08, %o0
188*1ab32693SBabu Moger	EX_LD(LOAD(ldx, %o1 - 0x08, GLOBAL_SPARE), memcpy_retl_o2_plus_o4_plus_32)
189*1ab32693SBabu Moger	EX_ST(STORE_INIT(%o5, %o0), memcpy_retl_o2_plus_o4_plus_32)
190ae2c6ca6SDavid S. Miller	add		%o0, 0x08, %o0
191*1ab32693SBabu Moger	EX_ST(STORE_INIT(%g2, %o0), memcpy_retl_o2_plus_o4_plus_24)
192ae2c6ca6SDavid S. Miller	add		%o0, 0x08, %o0
193*1ab32693SBabu Moger	EX_ST(STORE_INIT(%g3, %o0), memcpy_retl_o2_plus_o4_plus_16)
194ae2c6ca6SDavid S. Miller	add		%o0, 0x08, %o0
195*1ab32693SBabu Moger	EX_ST(STORE_INIT(GLOBAL_SPARE, %o0), memcpy_retl_o2_plus_o4_plus_8)
196ae2c6ca6SDavid S. Miller	add		%o0, 0x08, %o0
197ae2c6ca6SDavid S. Miller	bne,pt		%icc, 1b
198ae2c6ca6SDavid S. Miller	 LOAD(prefetch, %o1 + 0x200, #n_reads_strong)
199ae2c6ca6SDavid S. Miller
200ae2c6ca6SDavid S. Miller	membar		#StoreLoad | #StoreStore
201ae2c6ca6SDavid S. Miller
202ae2c6ca6SDavid S. Miller	brz,pn		%o2, .Lexit
203ae2c6ca6SDavid S. Miller	 cmp		%o2, 19
204ae2c6ca6SDavid S. Miller	ble,pn		%icc, .Lsmall_unaligned
205ae2c6ca6SDavid S. Miller	 nop
206ae2c6ca6SDavid S. Miller	ba,a,pt		%icc, .Lmedium_noprefetch
207ae2c6ca6SDavid S. Miller
208ae2c6ca6SDavid S. Miller.Lexit:	retl
209ae2c6ca6SDavid S. Miller	 mov		EX_RETVAL(%o3), %o0
210ae2c6ca6SDavid S. Miller
211ae2c6ca6SDavid S. Miller.Llarge_src_unaligned:
212f4da3628SDavid S. Miller#ifdef NON_USER_COPY
213f4da3628SDavid S. Miller	VISEntryHalfFast(.Lmedium_vis_entry_fail)
214f4da3628SDavid S. Miller#else
215f4da3628SDavid S. Miller	VISEntryHalf
216f4da3628SDavid S. Miller#endif
217ae2c6ca6SDavid S. Miller	andn		%o2, 0x3f, %o4
218ae2c6ca6SDavid S. Miller	sub		%o2, %o4, %o2
219ae2c6ca6SDavid S. Miller	alignaddr	%o1, %g0, %g1
220ae2c6ca6SDavid S. Miller	add		%o1, %o4, %o1
221*1ab32693SBabu Moger	EX_LD_FP(LOAD(ldd, %g1 + 0x00, %f0), memcpy_retl_o2_plus_o4)
222*1ab32693SBabu Moger1:	EX_LD_FP(LOAD(ldd, %g1 + 0x08, %f2), memcpy_retl_o2_plus_o4)
223ae2c6ca6SDavid S. Miller	subcc		%o4, 0x40, %o4
224*1ab32693SBabu Moger	EX_LD_FP(LOAD(ldd, %g1 + 0x10, %f4), memcpy_retl_o2_plus_o4_plus_64)
225*1ab32693SBabu Moger	EX_LD_FP(LOAD(ldd, %g1 + 0x18, %f6), memcpy_retl_o2_plus_o4_plus_64)
226*1ab32693SBabu Moger	EX_LD_FP(LOAD(ldd, %g1 + 0x20, %f8), memcpy_retl_o2_plus_o4_plus_64)
227*1ab32693SBabu Moger	EX_LD_FP(LOAD(ldd, %g1 + 0x28, %f10), memcpy_retl_o2_plus_o4_plus_64)
228*1ab32693SBabu Moger	EX_LD_FP(LOAD(ldd, %g1 + 0x30, %f12), memcpy_retl_o2_plus_o4_plus_64)
229*1ab32693SBabu Moger	EX_LD_FP(LOAD(ldd, %g1 + 0x38, %f14), memcpy_retl_o2_plus_o4_plus_64)
230ae2c6ca6SDavid S. Miller	faligndata	%f0, %f2, %f16
231*1ab32693SBabu Moger	EX_LD_FP(LOAD(ldd, %g1 + 0x40, %f0), memcpy_retl_o2_plus_o4_plus_64)
232ae2c6ca6SDavid S. Miller	faligndata	%f2, %f4, %f18
233ae2c6ca6SDavid S. Miller	add		%g1, 0x40, %g1
234ae2c6ca6SDavid S. Miller	faligndata	%f4, %f6, %f20
235ae2c6ca6SDavid S. Miller	faligndata	%f6, %f8, %f22
236ae2c6ca6SDavid S. Miller	faligndata	%f8, %f10, %f24
237ae2c6ca6SDavid S. Miller	faligndata	%f10, %f12, %f26
238ae2c6ca6SDavid S. Miller	faligndata	%f12, %f14, %f28
239ae2c6ca6SDavid S. Miller	faligndata	%f14, %f0, %f30
240*1ab32693SBabu Moger	EX_ST_FP(STORE(std, %f16, %o0 + 0x00), memcpy_retl_o2_plus_o4_plus_64)
241*1ab32693SBabu Moger	EX_ST_FP(STORE(std, %f18, %o0 + 0x08), memcpy_retl_o2_plus_o4_plus_56)
242*1ab32693SBabu Moger	EX_ST_FP(STORE(std, %f20, %o0 + 0x10), memcpy_retl_o2_plus_o4_plus_48)
243*1ab32693SBabu Moger	EX_ST_FP(STORE(std, %f22, %o0 + 0x18), memcpy_retl_o2_plus_o4_plus_40)
244*1ab32693SBabu Moger	EX_ST_FP(STORE(std, %f24, %o0 + 0x20), memcpy_retl_o2_plus_o4_plus_32)
245*1ab32693SBabu Moger	EX_ST_FP(STORE(std, %f26, %o0 + 0x28), memcpy_retl_o2_plus_o4_plus_24)
246*1ab32693SBabu Moger	EX_ST_FP(STORE(std, %f28, %o0 + 0x30), memcpy_retl_o2_plus_o4_plus_16)
247*1ab32693SBabu Moger	EX_ST_FP(STORE(std, %f30, %o0 + 0x38), memcpy_retl_o2_plus_o4_plus_8)
248ae2c6ca6SDavid S. Miller	add		%o0, 0x40, %o0
249ae2c6ca6SDavid S. Miller	bne,pt		%icc, 1b
250ae2c6ca6SDavid S. Miller	 LOAD(prefetch, %g1 + 0x200, #n_reads_strong)
25144922150SDavid S. Miller#ifdef NON_USER_COPY
25244922150SDavid S. Miller	VISExitHalfFast
25344922150SDavid S. Miller#else
254ae2c6ca6SDavid S. Miller	VISExitHalf
25544922150SDavid S. Miller#endif
256ae2c6ca6SDavid S. Miller	brz,pn		%o2, .Lexit
257ae2c6ca6SDavid S. Miller	 cmp		%o2, 19
258ae2c6ca6SDavid S. Miller	ble,pn		%icc, .Lsmall_unaligned
259ae2c6ca6SDavid S. Miller	 nop
260ae2c6ca6SDavid S. Miller	ba,a,pt		%icc, .Lmedium_unaligned
261ae2c6ca6SDavid S. Miller
262f4da3628SDavid S. Miller#ifdef NON_USER_COPY
263f4da3628SDavid S. Miller.Lmedium_vis_entry_fail:
264f4da3628SDavid S. Miller	 or		%o0, %o1, %g2
265f4da3628SDavid S. Miller#endif
266ae2c6ca6SDavid S. Miller.Lmedium:
267ae2c6ca6SDavid S. Miller	LOAD(prefetch, %o1 + 0x40, #n_reads_strong)
268ae2c6ca6SDavid S. Miller	andcc		%g2, 0x7, %g0
269ae2c6ca6SDavid S. Miller	bne,pn		%icc, .Lmedium_unaligned
270ae2c6ca6SDavid S. Miller	 nop
271ae2c6ca6SDavid S. Miller.Lmedium_noprefetch:
272ae2c6ca6SDavid S. Miller	andncc		%o2, 0x20 - 1, %o5
273ae2c6ca6SDavid S. Miller	be,pn		%icc, 2f
274ae2c6ca6SDavid S. Miller	 sub		%o2, %o5, %o2
275*1ab32693SBabu Moger1:	EX_LD(LOAD(ldx, %o1 + 0x00, %g1), memcpy_retl_o2_plus_o5)
276*1ab32693SBabu Moger	EX_LD(LOAD(ldx, %o1 + 0x08, %g2), memcpy_retl_o2_plus_o5)
277*1ab32693SBabu Moger	EX_LD(LOAD(ldx, %o1 + 0x10, GLOBAL_SPARE), memcpy_retl_o2_plus_o5)
278*1ab32693SBabu Moger	EX_LD(LOAD(ldx, %o1 + 0x18, %o4), memcpy_retl_o2_plus_o5)
279ae2c6ca6SDavid S. Miller	add		%o1, 0x20, %o1
280ae2c6ca6SDavid S. Miller	subcc		%o5, 0x20, %o5
281*1ab32693SBabu Moger	EX_ST(STORE(stx, %g1, %o0 + 0x00), memcpy_retl_o2_plus_o5_plus_32)
282*1ab32693SBabu Moger	EX_ST(STORE(stx, %g2, %o0 + 0x08), memcpy_retl_o2_plus_o5_plus_24)
283*1ab32693SBabu Moger	EX_ST(STORE(stx, GLOBAL_SPARE, %o0 + 0x10), memcpy_retl_o2_plus_o5_plus_24)
284*1ab32693SBabu Moger	EX_ST(STORE(stx, %o4, %o0 + 0x18), memcpy_retl_o2_plus_o5_plus_8)
285ae2c6ca6SDavid S. Miller	bne,pt		%icc, 1b
286ae2c6ca6SDavid S. Miller	 add		%o0, 0x20, %o0
287ae2c6ca6SDavid S. Miller2:	andcc		%o2, 0x18, %o5
288ae2c6ca6SDavid S. Miller	be,pt		%icc, 3f
289ae2c6ca6SDavid S. Miller	 sub		%o2, %o5, %o2
29095707704SDavid S. Miller
291*1ab32693SBabu Moger1:	EX_LD(LOAD(ldx, %o1 + 0x00, %g1), memcpy_retl_o2_plus_o5)
292ae2c6ca6SDavid S. Miller	add		%o1, 0x08, %o1
293ae2c6ca6SDavid S. Miller	add		%o0, 0x08, %o0
294ae2c6ca6SDavid S. Miller	subcc		%o5, 0x08, %o5
295ae2c6ca6SDavid S. Miller	bne,pt		%icc, 1b
296*1ab32693SBabu Moger	 EX_ST(STORE(stx, %g1, %o0 - 0x08), memcpy_retl_o2_plus_o5_plus_8)
297ae2c6ca6SDavid S. Miller3:	brz,pt		%o2, .Lexit
298ae2c6ca6SDavid S. Miller	 cmp		%o2, 0x04
299ae2c6ca6SDavid S. Miller	bl,pn		%icc, .Ltiny
300ae2c6ca6SDavid S. Miller	 nop
301*1ab32693SBabu Moger	EX_LD(LOAD(lduw, %o1 + 0x00, %g1), memcpy_retl_o2)
302ae2c6ca6SDavid S. Miller	add		%o1, 0x04, %o1
303ae2c6ca6SDavid S. Miller	add		%o0, 0x04, %o0
304ae2c6ca6SDavid S. Miller	subcc		%o2, 0x04, %o2
305ae2c6ca6SDavid S. Miller	bne,pn		%icc, .Ltiny
306*1ab32693SBabu Moger	 EX_ST(STORE(stw, %g1, %o0 - 0x04), memcpy_retl_o2_plus_4)
307ae2c6ca6SDavid S. Miller	ba,a,pt		%icc, .Lexit
308ae2c6ca6SDavid S. Miller.Lmedium_unaligned:
309ae2c6ca6SDavid S. Miller	/* First get dest 8 byte aligned.  */
310ae2c6ca6SDavid S. Miller	sub		%g0, %o0, %g1
311ae2c6ca6SDavid S. Miller	and		%g1, 0x7, %g1
312ae2c6ca6SDavid S. Miller	brz,pt		%g1, 2f
313ae2c6ca6SDavid S. Miller	 sub		%o2, %g1, %o2
314ae2c6ca6SDavid S. Miller
315*1ab32693SBabu Moger1:	EX_LD(LOAD(ldub, %o1 + 0x00, %g2), memcpy_retl_o2_plus_g1)
316ae2c6ca6SDavid S. Miller	add		%o1, 1, %o1
317ae2c6ca6SDavid S. Miller	subcc		%g1, 1, %g1
318ae2c6ca6SDavid S. Miller	add		%o0, 1, %o0
319ae2c6ca6SDavid S. Miller	bne,pt		%icc, 1b
320*1ab32693SBabu Moger	 EX_ST(STORE(stb, %g2, %o0 - 0x01), memcpy_retl_o2_plus_g1_plus_1)
321ae2c6ca6SDavid S. Miller2:
322ae2c6ca6SDavid S. Miller	and		%o1, 0x7, %g1
323ae2c6ca6SDavid S. Miller	brz,pn		%g1, .Lmedium_noprefetch
324ae2c6ca6SDavid S. Miller	 sll		%g1, 3, %g1
325ae2c6ca6SDavid S. Miller	mov		64, %g2
326ae2c6ca6SDavid S. Miller	sub		%g2, %g1, %g2
327ae2c6ca6SDavid S. Miller	andn		%o1, 0x7, %o1
328*1ab32693SBabu Moger	EX_LD(LOAD(ldx, %o1 + 0x00, %o4), memcpy_retl_o2)
329ae2c6ca6SDavid S. Miller	sllx		%o4, %g1, %o4
330ae2c6ca6SDavid S. Miller	andn		%o2, 0x08 - 1, %o5
331ae2c6ca6SDavid S. Miller	sub		%o2, %o5, %o2
332*1ab32693SBabu Moger1:	EX_LD(LOAD(ldx, %o1 + 0x08, %g3), memcpy_retl_o2_plus_o5)
333ae2c6ca6SDavid S. Miller	add		%o1, 0x08, %o1
334ae2c6ca6SDavid S. Miller	subcc		%o5, 0x08, %o5
335ae2c6ca6SDavid S. Miller	srlx		%g3, %g2, GLOBAL_SPARE
336ae2c6ca6SDavid S. Miller	or		GLOBAL_SPARE, %o4, GLOBAL_SPARE
337*1ab32693SBabu Moger	EX_ST(STORE(stx, GLOBAL_SPARE, %o0 + 0x00), memcpy_retl_o2_plus_o5_plus_8)
338ae2c6ca6SDavid S. Miller	add		%o0, 0x08, %o0
339ae2c6ca6SDavid S. Miller	bne,pt		%icc, 1b
340ae2c6ca6SDavid S. Miller	 sllx		%g3, %g1, %o4
341ae2c6ca6SDavid S. Miller	srl		%g1, 3, %g1
342ae2c6ca6SDavid S. Miller	add		%o1, %g1, %o1
343ae2c6ca6SDavid S. Miller	brz,pn		%o2, .Lexit
344ae2c6ca6SDavid S. Miller	 nop
345ae2c6ca6SDavid S. Miller	ba,pt		%icc, .Lsmall_unaligned
346ae2c6ca6SDavid S. Miller
347ae2c6ca6SDavid S. Miller.Ltiny:
348*1ab32693SBabu Moger	EX_LD(LOAD(ldub, %o1 + 0x00, %g1), memcpy_retl_o2)
349ae2c6ca6SDavid S. Miller	subcc		%o2, 1, %o2
350ae2c6ca6SDavid S. Miller	be,pn		%icc, .Lexit
351*1ab32693SBabu Moger	 EX_ST(STORE(stb, %g1, %o0 + 0x00), memcpy_retl_o2_plus_1)
352*1ab32693SBabu Moger	EX_LD(LOAD(ldub, %o1 + 0x01, %g1), memcpy_retl_o2)
353ae2c6ca6SDavid S. Miller	subcc		%o2, 1, %o2
354ae2c6ca6SDavid S. Miller	be,pn		%icc, .Lexit
355*1ab32693SBabu Moger	 EX_ST(STORE(stb, %g1, %o0 + 0x01), memcpy_retl_o2_plus_1)
356*1ab32693SBabu Moger	EX_LD(LOAD(ldub, %o1 + 0x02, %g1), memcpy_retl_o2)
357ae2c6ca6SDavid S. Miller	ba,pt		%icc, .Lexit
358*1ab32693SBabu Moger	 EX_ST(STORE(stb, %g1, %o0 + 0x02), memcpy_retl_o2)
359ae2c6ca6SDavid S. Miller
360ae2c6ca6SDavid S. Miller.Lsmall:
361ae2c6ca6SDavid S. Miller	andcc		%g2, 0x3, %g0
362ae2c6ca6SDavid S. Miller	bne,pn		%icc, .Lsmall_unaligned
363ae2c6ca6SDavid S. Miller	 andn		%o2, 0x4 - 1, %o5
364ae2c6ca6SDavid S. Miller	sub		%o2, %o5, %o2
365ae2c6ca6SDavid S. Miller1:
366*1ab32693SBabu Moger	EX_LD(LOAD(lduw, %o1 + 0x00, %g1), memcpy_retl_o2_plus_o5)
367ae2c6ca6SDavid S. Miller	add		%o1, 0x04, %o1
368ae2c6ca6SDavid S. Miller	subcc		%o5, 0x04, %o5
369ae2c6ca6SDavid S. Miller	add		%o0, 0x04, %o0
370ae2c6ca6SDavid S. Miller	bne,pt		%icc, 1b
371*1ab32693SBabu Moger	 EX_ST(STORE(stw, %g1, %o0 - 0x04), memcpy_retl_o2_plus_o5_plus_4)
372ae2c6ca6SDavid S. Miller	brz,pt		%o2, .Lexit
373ae2c6ca6SDavid S. Miller	 nop
374ae2c6ca6SDavid S. Miller	ba,a,pt		%icc, .Ltiny
375ae2c6ca6SDavid S. Miller
376ae2c6ca6SDavid S. Miller.Lsmall_unaligned:
377*1ab32693SBabu Moger1:	EX_LD(LOAD(ldub, %o1 + 0x00, %g1), memcpy_retl_o2)
378ae2c6ca6SDavid S. Miller	add		%o1, 1, %o1
379ae2c6ca6SDavid S. Miller	add		%o0, 1, %o0
380ae2c6ca6SDavid S. Miller	subcc		%o2, 1, %o2
381ae2c6ca6SDavid S. Miller	bne,pt		%icc, 1b
382*1ab32693SBabu Moger	 EX_ST(STORE(stb, %g1, %o0 - 0x01), memcpy_retl_o2_plus_1)
383ae2c6ca6SDavid S. Miller	ba,a,pt		%icc, .Lexit
3840ae2d26fSBabu Moger	 nop
385ae2c6ca6SDavid S. Miller	.size		FUNC_NAME, .-FUNC_NAME
386