about summary refs log tree commit diff
path: root/sysdeps/i386/i686/multiarch/memcpy-sse2-unaligned.S
blob: ed1f3836a61d31936bc2685dd8a3cb5f70a09f40 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
/* memcpy optimized with SSE2 unaligned memory access instructions.
   Copyright (C) 2014-2022 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

#if IS_IN (libc) \
    && (defined SHARED \
	|| defined USE_AS_MEMMOVE \
	|| !defined USE_MULTIARCH)

# include <sysdep.h>
# include "asm-syntax.h"

# ifndef MEMCPY
#  define MEMCPY	__memcpy_sse2_unaligned
#  define MEMCPY_CHK	__memcpy_chk_sse2_unaligned
# endif

# define DEST		PARMS
# define SRC		DEST+4
# define LEN		SRC+4

# define CFI_PUSH(REG)		\
  cfi_adjust_cfa_offset (4);		\
  cfi_rel_offset (REG, 0)

# define CFI_POP(REG)		\
  cfi_adjust_cfa_offset (-4);		\
  cfi_restore (REG)

# define PUSH(REG)	pushl REG; CFI_PUSH (REG)
# define POP(REG)	popl REG; CFI_POP (REG)

# define PARMS		8		/* Preserve EBX.  */
# define ENTRANCE	PUSH (%ebx);
# define RETURN_END	POP (%ebx); ret
# define RETURN	RETURN_END; CFI_PUSH (%ebx)

	.section .text.sse2,"ax",@progbits
# if defined SHARED
ENTRY (MEMCPY_CHK)
	movl	12(%esp), %eax
	cmpl	%eax, 16(%esp)
	jb	HIDDEN_JUMPTARGET (__chk_fail)
END (MEMCPY_CHK)
# endif

ENTRY (MEMCPY)
	ENTRANCE
	movl	LEN(%esp), %ecx
	movl	SRC(%esp), %eax
	movl	DEST(%esp), %edx
	cmp	%edx, %eax

# ifdef USE_AS_MEMMOVE
	ja	L(check_forward)

L(mm_len_0_or_more_backward):
/* Now do checks for lengths. We do [0..16], [16..32], [32..64], [64..128]
	separately.  */
	cmp	$16, %ecx
	jbe	L(mm_len_0_16_bytes_backward)

	cmpl	$32, %ecx
	ja	L(mm_len_32_or_more_backward)

/* Copy [0..32] and return.  */
	movdqu	(%eax), %xmm0
	movdqu	-16(%eax, %ecx), %xmm1
	movdqu	%xmm0, (%edx)
	movdqu	%xmm1, -16(%edx, %ecx)
	jmp	L(return)

L(mm_len_32_or_more_backward):
	cmpl	$64, %ecx
	ja	L(mm_len_64_or_more_backward)

/* Copy [0..64] and return.  */
	movdqu	(%eax), %xmm0
	movdqu	16(%eax), %xmm1
	movdqu	-16(%eax, %ecx), %xmm2
	movdqu	-32(%eax, %ecx), %xmm3
	movdqu	%xmm0, (%edx)
	movdqu	%xmm1, 16(%edx)
	movdqu	%xmm2, -16(%edx, %ecx)
	movdqu	%xmm3, -32(%edx, %ecx)
	jmp	L(return)

L(mm_len_64_or_more_backward):
	cmpl	$128, %ecx
	ja	L(mm_len_128_or_more_backward)

/* Copy [0..128] and return.  */
	movdqu	(%eax), %xmm0
	movdqu	16(%eax), %xmm1
	movdqu	32(%eax), %xmm2
	movdqu	48(%eax), %xmm3
	movdqu	-64(%eax, %ecx), %xmm4
	movdqu	-48(%eax, %ecx), %xmm5
	movdqu	-32(%eax, %ecx), %xmm6
	movdqu	-16(%eax, %ecx), %xmm7
	movdqu	%xmm0, (%edx)
	movdqu	%xmm1, 16(%edx)
	movdqu	%xmm2, 32(%edx)
	movdqu	%xmm3, 48(%edx)
	movdqu	%xmm4, -64(%edx, %ecx)
	movdqu	%xmm5, -48(%edx, %ecx)
	movdqu	%xmm6, -32(%edx, %ecx)
	movdqu	%xmm7, -16(%edx, %ecx)
	jmp	L(return)

L(mm_len_128_or_more_backward):
	add	%ecx, %eax
	cmp	%edx, %eax
	movl	SRC(%esp), %eax
	jbe	L(forward)
	PUSH (%esi)
	PUSH (%edi)
	PUSH (%ebx)

/* Aligning the address of destination. */
	movdqu	(%eax), %xmm4
	movdqu	16(%eax), %xmm5
	movdqu	32(%eax), %xmm6
	movdqu	48(%eax), %xmm7
	leal	(%edx, %ecx), %esi
	movdqu	-16(%eax, %ecx), %xmm0
	subl	$16, %esp
	movdqu	%xmm0, (%esp)
	mov	%ecx, %edi
	movl	%esi, %ecx
	andl	$-16, %ecx
	leal	(%ecx), %ebx
	subl	%edx, %ebx
	leal	(%eax, %ebx), %eax
	shrl	$6, %ebx

# ifdef SHARED_CACHE_SIZE_HALF
	cmp	$SHARED_CACHE_SIZE_HALF, %edi
# else
#  ifdef PIC
	PUSH (%ebx)
	SETUP_PIC_REG (bx)
	add	$_GLOBAL_OFFSET_TABLE_, %ebx
	cmp	__x86_shared_cache_size_half@GOTOFF(%ebx), %edi
	POP (%ebx)
#  else
	cmp	__x86_shared_cache_size_half, %edi
#  endif
# endif
	jae	L(mm_large_page_loop_backward)

	.p2align 4
L(mm_main_loop_backward):

	prefetcht0 -128(%eax)

	movdqu	-64(%eax), %xmm0
	movdqu	-48(%eax), %xmm1
	movdqu	-32(%eax), %xmm2
	movdqu	-16(%eax), %xmm3
	movaps	%xmm0, -64(%ecx)
	subl	$64, %eax
	movaps	%xmm1, -48(%ecx)
	movaps	%xmm2, -32(%ecx)
	movaps	%xmm3, -16(%ecx)
	subl	$64, %ecx
	sub	$1, %ebx
	jnz	L(mm_main_loop_backward)
	movdqu	(%esp), %xmm0
	addl	$16, %esp
	movdqu	%xmm0, -16(%esi)
	movdqu	%xmm4, (%edx)
	movdqu	%xmm5, 16(%edx)
	movdqu	%xmm6, 32(%edx)
	movdqu	%xmm7, 48(%edx)
	POP (%ebx)
	jmp	L(mm_return_pop_all)

/* Copy [0..16] and return.  */
L(mm_len_0_16_bytes_backward):
	testb	$24, %cl
	jnz	L(mm_len_9_16_bytes_backward)
	testb	$4, %cl
	.p2align 4,,5
	jnz	L(mm_len_5_8_bytes_backward)
	testl	%ecx, %ecx
	.p2align 4,,2
	je	L(return)
	testb	$2, %cl
	.p2align 4,,1
	jne	L(mm_len_3_4_bytes_backward)
	movzbl	-1(%eax,%ecx), %ebx
	movzbl	(%eax), %eax
	movb	%bl, -1(%edx,%ecx)
	movb	%al, (%edx)
	jmp	L(return)

L(mm_len_3_4_bytes_backward):
	movzwl	-2(%eax,%ecx), %ebx
	movzwl	(%eax), %eax
	movw	%bx, -2(%edx,%ecx)
	movw	%ax, (%edx)
	jmp	L(return)

L(mm_len_9_16_bytes_backward):
	PUSH (%esi)
	movl	-4(%eax,%ecx), %ebx
	movl	-8(%eax,%ecx), %esi
	movl	%ebx, -4(%edx,%ecx)
	movl	%esi, -8(%edx,%ecx)
	subl	$8, %ecx
	POP (%esi)
	jmp	L(mm_len_0_16_bytes_backward)

L(mm_len_5_8_bytes_backward):
	movl	(%eax), %ebx
	movl	-4(%eax,%ecx), %eax
	movl	%ebx, (%edx)
	movl	%eax, -4(%edx,%ecx)
	jmp	L(return)

/* Big length copy backward part.  */
	.p2align 4
L(mm_large_page_loop_backward):
	movdqu	-64(%eax), %xmm0
	movdqu	-48(%eax), %xmm1
	movdqu	-32(%eax), %xmm2
	movdqu	-16(%eax), %xmm3
	movntdq	%xmm0, -64(%ecx)
	subl	$64, %eax
	movntdq	%xmm1, -48(%ecx)
	movntdq	%xmm2, -32(%ecx)
	movntdq	%xmm3, -16(%ecx)
	subl	$64, %ecx
	sub	$1, %ebx
	jnz	L(mm_large_page_loop_backward)
	sfence
	movdqu	(%esp), %xmm0
	addl	$16, %esp
	movdqu	%xmm0, -16(%esi)
	movdqu	%xmm4, (%edx)
	movdqu	%xmm5, 16(%edx)
	movdqu	%xmm6, 32(%edx)
	movdqu	%xmm7, 48(%edx)
	POP (%ebx)
	jmp	L(mm_return_pop_all)

L(check_forward):
	add	%edx, %ecx
	cmp	%eax, %ecx
	movl	LEN(%esp), %ecx
	jbe	L(forward)

/* Now do checks for lengths. We do [0..16], [0..32], [0..64], [0..128]
	separately.  */
	cmp	$16, %ecx
	jbe	L(mm_len_0_16_bytes_forward)

	cmpl	$32, %ecx
	ja	L(mm_len_32_or_more_forward)

/* Copy [0..32] and return.  */
	movdqu	(%eax), %xmm0
	movdqu	-16(%eax, %ecx), %xmm1
	movdqu	%xmm0, (%edx)
	movdqu	%xmm1, -16(%edx, %ecx)
	jmp	L(return)

L(mm_len_32_or_more_forward):
	cmpl	$64, %ecx
	ja	L(mm_len_64_or_more_forward)

/* Copy [0..64] and return.  */
	movdqu	(%eax), %xmm0
	movdqu	16(%eax), %xmm1
	movdqu	-16(%eax, %ecx), %xmm2
	movdqu	-32(%eax, %ecx), %xmm3
	movdqu	%xmm0, (%edx)
	movdqu	%xmm1, 16(%edx)
	movdqu	%xmm2, -16(%edx, %ecx)
	movdqu	%xmm3, -32(%edx, %ecx)
	jmp	L(return)

L(mm_len_64_or_more_forward):
	cmpl	$128, %ecx
	ja	L(mm_len_128_or_more_forward)

/* Copy [0..128] and return.  */
	movdqu	(%eax), %xmm0
	movdqu	16(%eax), %xmm1
	movdqu	32(%eax), %xmm2
	movdqu	48(%eax), %xmm3
	movdqu	-64(%eax, %ecx), %xmm4
	movdqu	-48(%eax, %ecx), %xmm5
	movdqu	-32(%eax, %ecx), %xmm6
	movdqu	-16(%eax, %ecx), %xmm7
	movdqu	%xmm0, (%edx)
	movdqu	%xmm1, 16(%edx)
	movdqu	%xmm2, 32(%edx)
	movdqu	%xmm3, 48(%edx)
	movdqu	%xmm4, -64(%edx, %ecx)
	movdqu	%xmm5, -48(%edx, %ecx)
	movdqu	%xmm6, -32(%edx, %ecx)
	movdqu	%xmm7, -16(%edx, %ecx)
	jmp	L(return)

L(mm_len_128_or_more_forward):
	PUSH (%esi)
	PUSH (%edi)
	PUSH (%ebx)

/* Aligning the address of destination. */
	movdqu	-16(%eax, %ecx), %xmm4
	movdqu	-32(%eax, %ecx), %xmm5
	movdqu	-48(%eax, %ecx), %xmm6
	movdqu	-64(%eax, %ecx), %xmm7
	leal	(%edx, %ecx), %esi
	movdqu	(%eax), %xmm0
	subl	$16, %esp
	movdqu	%xmm0, (%esp)
	mov	%ecx, %edi
	leal	16(%edx), %ecx
	andl	$-16, %ecx
	movl	%ecx, %ebx
	subl	%edx, %ebx
	addl	%ebx, %eax
	movl	%esi, %ebx
	subl	%ecx, %ebx
	shrl	$6, %ebx

# ifdef SHARED_CACHE_SIZE_HALF
	cmp	$SHARED_CACHE_SIZE_HALF, %edi
# else
#  ifdef PIC
	PUSH (%ebx)
	SETUP_PIC_REG(bx)
	add	$_GLOBAL_OFFSET_TABLE_, %ebx
	cmp	__x86_shared_cache_size_half@GOTOFF(%ebx), %edi
	POP (%ebx)
#  else
	cmp	__x86_shared_cache_size_half, %edi
#  endif
# endif
	jae	L(mm_large_page_loop_forward)

	.p2align 4
L(mm_main_loop_forward):

	prefetcht0 128(%eax)

	movdqu	(%eax), %xmm0
	movdqu	16(%eax), %xmm1
	movdqu	32(%eax), %xmm2
	movdqu	48(%eax), %xmm3
	movdqa	%xmm0, (%ecx)
	addl	$64, %eax
	movaps	%xmm1, 16(%ecx)
	movaps	%xmm2, 32(%ecx)
	movaps	%xmm3, 48(%ecx)
	addl	$64, %ecx
	sub	$1, %ebx
	jnz	L(mm_main_loop_forward)
	movdqu	(%esp), %xmm0
	addl	$16, %esp
	movdqu	%xmm0, (%edx)
	movdqu	%xmm4, -16(%esi)
	movdqu	%xmm5, -32(%esi)
	movdqu	%xmm6, -48(%esi)
	movdqu	%xmm7, -64(%esi)
	POP (%ebx)
	jmp	L(mm_return_pop_all)

L(mm_len_0_16_bytes_forward):
	testb	$24, %cl
	jne	L(mm_len_9_16_bytes_forward)
	testb	$4, %cl
	.p2align 4,,5
	jne	L(mm_len_5_8_bytes_forward)
	testl	%ecx, %ecx
	.p2align 4,,2
	je	L(return)
	testb	$2, %cl
	.p2align 4,,1
	jne	L(mm_len_2_4_bytes_forward)
	movzbl	-1(%eax,%ecx), %ebx
	movzbl	(%eax), %eax
	movb	%bl, -1(%edx,%ecx)
	movb	%al, (%edx)
	jmp	L(return)

L(mm_len_2_4_bytes_forward):
	movzwl	-2(%eax,%ecx), %ebx
	movzwl	(%eax), %eax
	movw	%bx, -2(%edx,%ecx)
	movw	%ax, (%edx)
	jmp	L(return)

L(mm_len_5_8_bytes_forward):
	movl	(%eax), %ebx
	movl	-4(%eax,%ecx), %eax
	movl	%ebx, (%edx)
	movl	%eax, -4(%edx,%ecx)
	jmp	L(return)

L(mm_len_9_16_bytes_forward):
	movq	(%eax), %xmm0
	movq	-8(%eax, %ecx), %xmm1
	movq	%xmm0, (%edx)
	movq	%xmm1, -8(%edx, %ecx)
	jmp	L(return)

L(mm_return_pop_all):
	movl	%edx, %eax
	POP (%edi)
	POP (%esi)
	RETURN

/* Big length copy forward part.  */
	.p2align 4
L(mm_large_page_loop_forward):
	movdqu	(%eax), %xmm0
	movdqu	16(%eax), %xmm1
	movdqu	32(%eax), %xmm2
	movdqu	48(%eax), %xmm3
	movntdq	%xmm0, (%ecx)
	addl	$64, %eax
	movntdq	%xmm1, 16(%ecx)
	movntdq	%xmm2, 32(%ecx)
	movntdq	%xmm3, 48(%ecx)
	addl	$64, %ecx
	sub	$1, %ebx
	jnz	L(mm_large_page_loop_forward)
	sfence
	movdqu	(%esp), %xmm0
	addl	$16, %esp
	movdqu	%xmm0, (%edx)
	movdqu	%xmm4, -16(%esi)
	movdqu	%xmm5, -32(%esi)
	movdqu	%xmm6, -48(%esi)
	movdqu	%xmm7, -64(%esi)
	POP (%ebx)
	jmp	L(mm_return_pop_all)
# endif

L(forward):
	cmp	$16, %ecx
	jbe	L(len_0_16_bytes)

# ifdef SHARED_CACHE_SIZE_HALF
	cmp	$SHARED_CACHE_SIZE_HALF, %ecx
# else
#  ifdef PIC
	SETUP_PIC_REG(bx)
	add	$_GLOBAL_OFFSET_TABLE_, %ebx
	cmp	__x86_shared_cache_size_half@GOTOFF(%ebx), %ecx
#  else
	cmp	__x86_shared_cache_size_half, %ecx
#  endif
# endif
	jae     L(large_page)

	movdqu	(%eax), %xmm0
	movdqu	-16(%eax, %ecx), %xmm1
	cmpl    $32, %ecx
	movdqu	%xmm0, (%edx)
	movdqu	%xmm1, -16(%edx, %ecx)
	jbe	L(return)

	movdqu	16(%eax), %xmm0
	movdqu	-32(%eax, %ecx), %xmm1
	cmpl    $64, %ecx
	movdqu	%xmm0, 16(%edx)
	movdqu	%xmm1, -32(%edx, %ecx)
	jbe	L(return)

	movdqu	32(%eax), %xmm0
	movdqu	48(%eax), %xmm1
	movdqu	-48(%eax, %ecx), %xmm2
	movdqu	-64(%eax, %ecx), %xmm3
	cmpl    $128, %ecx
	movdqu	%xmm0, 32(%edx)
	movdqu	%xmm1, 48(%edx)
	movdqu	%xmm2, -48(%edx, %ecx)
	movdqu	%xmm3, -64(%edx, %ecx)
	jbe	L(return)

/* Now the main loop: we align the address of the destination.  */
	leal	64(%edx), %ebx
	andl	$-64, %ebx

	addl	%edx, %ecx
	andl	$-64, %ecx

	subl	%edx, %eax

/* We should stop two iterations before the termination
	(in order not to misprefetch).  */
	subl	$64, %ecx
	cmpl	%ebx, %ecx
	je	L(main_loop_just_one_iteration)

	subl	$64, %ecx
	cmpl	%ebx, %ecx
	je	L(main_loop_last_two_iterations)

	.p2align 4
L(main_loop_cache):

	prefetcht0 128(%ebx, %eax)

	movdqu	(%ebx, %eax), %xmm0
	movdqu	16(%ebx, %eax), %xmm1
	movdqu	32(%ebx, %eax), %xmm2
	movdqu	48(%ebx, %eax), %xmm3
	movdqa	%xmm0, (%ebx)
	movaps	%xmm1, 16(%ebx)
	movaps	%xmm2, 32(%ebx)
	movaps	%xmm3, 48(%ebx)
	lea	64(%ebx), %ebx
	cmpl	%ebx, %ecx
	jne	L(main_loop_cache)

L(main_loop_last_two_iterations):
	movdqu	(%ebx, %eax), %xmm0
	movdqu	16(%ebx, %eax), %xmm1
	movdqu	32(%ebx, %eax), %xmm2
	movdqu	48(%ebx, %eax), %xmm3
	movdqu	64(%ebx, %eax), %xmm4
	movdqu	80(%ebx, %eax), %xmm5
	movdqu	96(%ebx, %eax), %xmm6
	movdqu	112(%ebx, %eax), %xmm7
	movdqa	%xmm0, (%ebx)
	movaps	%xmm1, 16(%ebx)
	movaps	%xmm2, 32(%ebx)
	movaps	%xmm3, 48(%ebx)
	movaps	%xmm4, 64(%ebx)
	movaps	%xmm5, 80(%ebx)
	movaps	%xmm6, 96(%ebx)
	movaps	%xmm7, 112(%ebx)
	jmp	L(return)

L(main_loop_just_one_iteration):
	movdqu	(%ebx, %eax), %xmm0
	movdqu	16(%ebx, %eax), %xmm1
	movdqu	32(%ebx, %eax), %xmm2
	movdqu	48(%ebx, %eax), %xmm3
	movdqa	%xmm0, (%ebx)
	movaps	%xmm1, 16(%ebx)
	movaps	%xmm2, 32(%ebx)
	movaps	%xmm3, 48(%ebx)
	jmp	L(return)

L(large_page):
	movdqu	(%eax), %xmm0
	movdqu	16(%eax), %xmm1
	movdqu	32(%eax), %xmm2
	movdqu	48(%eax), %xmm3
	movdqu	-64(%eax, %ecx), %xmm4
	movdqu	-48(%eax, %ecx), %xmm5
	movdqu	-32(%eax, %ecx), %xmm6
	movdqu	-16(%eax, %ecx), %xmm7
	movdqu	%xmm0, (%edx)
	movdqu	%xmm1, 16(%edx)
	movdqu	%xmm2, 32(%edx)
	movdqu	%xmm3, 48(%edx)
	movdqu	%xmm4, -64(%edx, %ecx)
	movdqu	%xmm5, -48(%edx, %ecx)
	movdqu	%xmm6, -32(%edx, %ecx)
	movdqu	%xmm7, -16(%edx, %ecx)

	movdqu	64(%eax), %xmm0
	movdqu	80(%eax), %xmm1
	movdqu	96(%eax), %xmm2
	movdqu	112(%eax), %xmm3
	movdqu	-128(%eax, %ecx), %xmm4
	movdqu	-112(%eax, %ecx), %xmm5
	movdqu	-96(%eax, %ecx), %xmm6
	movdqu	-80(%eax, %ecx), %xmm7
	movdqu	%xmm0, 64(%edx)
	movdqu	%xmm1, 80(%edx)
	movdqu	%xmm2, 96(%edx)
	movdqu	%xmm3, 112(%edx)
	movdqu	%xmm4, -128(%edx, %ecx)
	movdqu	%xmm5, -112(%edx, %ecx)
	movdqu	%xmm6, -96(%edx, %ecx)
	movdqu	%xmm7, -80(%edx, %ecx)

/* Now the main loop with non temporal stores. We align
	the address of the destination.  */
	leal	128(%edx), %ebx
	andl	$-128, %ebx

	addl	%edx, %ecx
	andl	$-128, %ecx

	subl	%edx, %eax

	.p2align 4
L(main_loop_large_page):
	movdqu	(%ebx, %eax), %xmm0
	movdqu	16(%ebx, %eax), %xmm1
	movdqu	32(%ebx, %eax), %xmm2
	movdqu	48(%ebx, %eax), %xmm3
	movdqu	64(%ebx, %eax), %xmm4
	movdqu	80(%ebx, %eax), %xmm5
	movdqu	96(%ebx, %eax), %xmm6
	movdqu	112(%ebx, %eax), %xmm7
	movntdq	%xmm0, (%ebx)
	movntdq	%xmm1, 16(%ebx)
	movntdq	%xmm2, 32(%ebx)
	movntdq	%xmm3, 48(%ebx)
	movntdq	%xmm4, 64(%ebx)
	movntdq	%xmm5, 80(%ebx)
	movntdq	%xmm6, 96(%ebx)
	movntdq	%xmm7, 112(%ebx)
	lea	128(%ebx), %ebx
	cmpl	%ebx, %ecx
	jne	L(main_loop_large_page)
	sfence
	jmp	L(return)

L(len_0_16_bytes):
	testb	$24, %cl
	jne	L(len_9_16_bytes)
	testb	$4, %cl
	.p2align 4,,5
	jne	L(len_5_8_bytes)
	testl	%ecx, %ecx
	.p2align 4,,2
	je	L(return)
	movzbl	(%eax), %ebx
	testb	$2, %cl
	movb	%bl, (%edx)
	je	L(return)
	movzwl	-2(%eax,%ecx), %ebx
	movw	%bx, -2(%edx,%ecx)
	jmp	L(return)

L(len_9_16_bytes):
	movq	(%eax), %xmm0
	movq	-8(%eax, %ecx), %xmm1
	movq	%xmm0, (%edx)
	movq	%xmm1, -8(%edx, %ecx)
	jmp	L(return)

L(len_5_8_bytes):
	movl	(%eax), %ebx
	movl	%ebx, (%edx)
	movl	-4(%eax,%ecx), %ebx
	movl	%ebx, -4(%edx,%ecx)

L(return):
	movl	%edx, %eax
# ifdef USE_AS_MEMPCPY
	movl	LEN(%esp), %ecx
	add	%ecx, %eax
# endif
	RETURN

END (MEMCPY)
#endif