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
|
/* memcpy with AVX
Copyright (C) 2014 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
<http://www.gnu.org/licenses/>. */
#include <sysdep.h>
#if !defined NOT_IN_libc \
&& (defined SHARED \
|| defined USE_AS_MEMMOVE \
|| !defined USE_MULTIARCH)
#include "asm-syntax.h"
#ifndef MEMCPY
# define MEMCPY __memcpy_avx_unaligned
# define MEMCPY_CHK __memcpy_chk_avx_unaligned
#endif
.section .text.avx,"ax",@progbits
#if !defined USE_AS_BCOPY
ENTRY (MEMCPY_CHK)
cmpq %rdx, %rcx
jb HIDDEN_JUMPTARGET (__chk_fail)
END (MEMCPY_CHK)
#endif
ENTRY (MEMCPY)
mov %rdi, %rax
#ifdef USE_AS_MEMPCPY
add %rdx, %rax
#endif
cmp $256, %rdx
jae L(256bytesormore)
cmp $16, %dl
jb L(less_16bytes)
cmp $128, %dl
jb L(less_128bytes)
vmovdqu (%rsi), %xmm0
lea (%rsi, %rdx), %rcx
vmovdqu 0x10(%rsi), %xmm1
vmovdqu 0x20(%rsi), %xmm2
vmovdqu 0x30(%rsi), %xmm3
vmovdqu 0x40(%rsi), %xmm4
vmovdqu 0x50(%rsi), %xmm5
vmovdqu 0x60(%rsi), %xmm6
vmovdqu 0x70(%rsi), %xmm7
vmovdqu -0x80(%rcx), %xmm8
vmovdqu -0x70(%rcx), %xmm9
vmovdqu -0x60(%rcx), %xmm10
vmovdqu -0x50(%rcx), %xmm11
vmovdqu -0x40(%rcx), %xmm12
vmovdqu -0x30(%rcx), %xmm13
vmovdqu -0x20(%rcx), %xmm14
vmovdqu -0x10(%rcx), %xmm15
lea (%rdi, %rdx), %rdx
vmovdqu %xmm0, (%rdi)
vmovdqu %xmm1, 0x10(%rdi)
vmovdqu %xmm2, 0x20(%rdi)
vmovdqu %xmm3, 0x30(%rdi)
vmovdqu %xmm4, 0x40(%rdi)
vmovdqu %xmm5, 0x50(%rdi)
vmovdqu %xmm6, 0x60(%rdi)
vmovdqu %xmm7, 0x70(%rdi)
vmovdqu %xmm8, -0x80(%rdx)
vmovdqu %xmm9, -0x70(%rdx)
vmovdqu %xmm10, -0x60(%rdx)
vmovdqu %xmm11, -0x50(%rdx)
vmovdqu %xmm12, -0x40(%rdx)
vmovdqu %xmm13, -0x30(%rdx)
vmovdqu %xmm14, -0x20(%rdx)
vmovdqu %xmm15, -0x10(%rdx)
ret
.p2align 4
L(less_128bytes):
cmp $64, %dl
jb L(less_64bytes)
vmovdqu (%rsi), %xmm0
lea (%rsi, %rdx), %rcx
vmovdqu 0x10(%rsi), %xmm1
vmovdqu 0x20(%rsi), %xmm2
lea (%rdi, %rdx), %rdx
vmovdqu 0x30(%rsi), %xmm3
vmovdqu -0x40(%rcx), %xmm4
vmovdqu -0x30(%rcx), %xmm5
vmovdqu -0x20(%rcx), %xmm6
vmovdqu -0x10(%rcx), %xmm7
vmovdqu %xmm0, (%rdi)
vmovdqu %xmm1, 0x10(%rdi)
vmovdqu %xmm2, 0x20(%rdi)
vmovdqu %xmm3, 0x30(%rdi)
vmovdqu %xmm4, -0x40(%rdx)
vmovdqu %xmm5, -0x30(%rdx)
vmovdqu %xmm6, -0x20(%rdx)
vmovdqu %xmm7, -0x10(%rdx)
ret
.p2align 4
L(less_64bytes):
cmp $32, %dl
jb L(less_32bytes)
vmovdqu (%rsi), %xmm0
vmovdqu 0x10(%rsi), %xmm1
vmovdqu -0x20(%rsi, %rdx), %xmm6
vmovdqu -0x10(%rsi, %rdx), %xmm7
vmovdqu %xmm0, (%rdi)
vmovdqu %xmm1, 0x10(%rdi)
vmovdqu %xmm6, -0x20(%rdi, %rdx)
vmovdqu %xmm7, -0x10(%rdi, %rdx)
ret
.p2align 4
L(less_32bytes):
vmovdqu (%rsi), %xmm0
vmovdqu -0x10(%rsi, %rdx), %xmm7
vmovdqu %xmm0, (%rdi)
vmovdqu %xmm7, -0x10(%rdi, %rdx)
ret
.p2align 4
L(less_16bytes):
cmp $8, %dl
jb L(less_8bytes)
movq -0x08(%rsi, %rdx), %rcx
movq (%rsi), %rsi
movq %rsi, (%rdi)
movq %rcx, -0x08(%rdi, %rdx)
ret
.p2align 4
L(less_8bytes):
cmp $4, %dl
jb L(less_4bytes)
mov -0x04(%rsi, %rdx), %ecx
mov (%rsi), %esi
mov %esi, (%rdi)
mov %ecx, -0x04(%rdi, %rdx)
ret
L(less_4bytes):
cmp $1, %dl
jbe L(less_2bytes)
mov -0x02(%rsi, %rdx), %cx
mov (%rsi), %si
mov %si, (%rdi)
mov %cx, -0x02(%rdi, %rdx)
ret
L(less_2bytes):
jb L(less_0bytes)
mov (%rsi), %cl
mov %cl, (%rdi)
L(less_0bytes):
ret
.p2align 4
L(256bytesormore):
#ifdef USE_AS_MEMMOVE
mov %rdi, %rcx
sub %rsi, %rcx
cmp %rdx, %rcx
jc L(copy_backward)
#endif
cmp $2048, %rdx
jae L(gobble_data_movsb)
mov %rax, %r8
lea (%rsi, %rdx), %rcx
mov %rdi, %r10
vmovdqu -0x80(%rcx), %xmm5
vmovdqu -0x70(%rcx), %xmm6
mov $0x80, %rax
and $-32, %rdi
add $32, %rdi
vmovdqu -0x60(%rcx), %xmm7
vmovdqu -0x50(%rcx), %xmm8
mov %rdi, %r11
sub %r10, %r11
vmovdqu -0x40(%rcx), %xmm9
vmovdqu -0x30(%rcx), %xmm10
sub %r11, %rdx
vmovdqu -0x20(%rcx), %xmm11
vmovdqu -0x10(%rcx), %xmm12
vmovdqu (%rsi), %ymm4
add %r11, %rsi
sub %eax, %edx
L(goble_128_loop):
vmovdqu (%rsi), %ymm0
vmovdqu 0x20(%rsi), %ymm1
vmovdqu 0x40(%rsi), %ymm2
vmovdqu 0x60(%rsi), %ymm3
add %rax, %rsi
vmovdqa %ymm0, (%rdi)
vmovdqa %ymm1, 0x20(%rdi)
vmovdqa %ymm2, 0x40(%rdi)
vmovdqa %ymm3, 0x60(%rdi)
add %rax, %rdi
sub %eax, %edx
jae L(goble_128_loop)
add %eax, %edx
add %rdi, %rdx
vmovdqu %ymm4, (%r10)
vzeroupper
vmovdqu %xmm5, -0x80(%rdx)
vmovdqu %xmm6, -0x70(%rdx)
vmovdqu %xmm7, -0x60(%rdx)
vmovdqu %xmm8, -0x50(%rdx)
vmovdqu %xmm9, -0x40(%rdx)
vmovdqu %xmm10, -0x30(%rdx)
vmovdqu %xmm11, -0x20(%rdx)
vmovdqu %xmm12, -0x10(%rdx)
mov %r8, %rax
ret
.p2align 4
L(gobble_data_movsb):
#ifdef SHARED_CACHE_SIZE_HALF
mov $SHARED_CACHE_SIZE_HALF, %rcx
#else
mov __x86_shared_cache_size_half(%rip), %rcx
#endif
shl $3, %rcx
cmp %rcx, %rdx
jae L(gobble_big_data_fwd)
mov %rdx, %rcx
mov %rdx, %rcx
rep movsb
ret
.p2align 4
L(gobble_big_data_fwd):
lea (%rsi, %rdx), %rcx
vmovdqu (%rsi), %ymm4
vmovdqu -0x80(%rsi,%rdx), %xmm5
vmovdqu -0x70(%rcx), %xmm6
vmovdqu -0x60(%rcx), %xmm7
vmovdqu -0x50(%rcx), %xmm8
vmovdqu -0x40(%rcx), %xmm9
vmovdqu -0x30(%rcx), %xmm10
vmovdqu -0x20(%rcx), %xmm11
vmovdqu -0x10(%rcx), %xmm12
mov %rdi, %r8
and $-32, %rdi
add $32, %rdi
mov %rdi, %r10
sub %r8, %r10
sub %r10, %rdx
add %r10, %rsi
lea (%rdi, %rdx), %rcx
add $-0x80, %rdx
L(gobble_mem_fwd_loop):
prefetchnta 0x1c0(%rsi)
prefetchnta 0x280(%rsi)
vmovdqu (%rsi), %ymm0
vmovdqu 0x20(%rsi), %ymm1
vmovdqu 0x40(%rsi), %ymm2
vmovdqu 0x60(%rsi), %ymm3
sub $-0x80, %rsi
vmovntdq %ymm0, (%rdi)
vmovntdq %ymm1, 0x20(%rdi)
vmovntdq %ymm2, 0x40(%rdi)
vmovntdq %ymm3, 0x60(%rdi)
sub $-0x80, %rdi
add $-0x80, %rdx
jb L(gobble_mem_fwd_loop)
sfence
vmovdqu %ymm4, (%r8)
vzeroupper
vmovdqu %xmm5, -0x80(%rcx)
vmovdqu %xmm6, -0x70(%rcx)
vmovdqu %xmm7, -0x60(%rcx)
vmovdqu %xmm8, -0x50(%rcx)
vmovdqu %xmm9, -0x40(%rcx)
vmovdqu %xmm10, -0x30(%rcx)
vmovdqu %xmm11, -0x20(%rcx)
vmovdqu %xmm12, -0x10(%rcx)
ret
#ifdef USE_AS_MEMMOVE
.p2align 4
L(copy_backward):
#ifdef SHARED_CACHE_SIZE_HALF
mov $SHARED_CACHE_SIZE_HALF, %rcx
#else
mov __x86_shared_cache_size_half(%rip), %rcx
#endif
shl $3, %rcx
vmovdqu (%rsi), %xmm5
vmovdqu 0x10(%rsi), %xmm6
add %rdx, %rdi
vmovdqu 0x20(%rsi), %xmm7
vmovdqu 0x30(%rsi), %xmm8
lea -0x20(%rdi), %r10
mov %rdi, %r11
vmovdqu 0x40(%rsi), %xmm9
vmovdqu 0x50(%rsi), %xmm10
and $0x1f, %r11
vmovdqu 0x60(%rsi), %xmm11
vmovdqu 0x70(%rsi), %xmm12
xor %r11, %rdi
add %rdx, %rsi
vmovdqu -0x20(%rsi), %ymm4
sub %r11, %rsi
sub %r11, %rdx
cmp %rcx, %rdx
ja L(gobble_big_data_bwd)
add $-0x80, %rdx
L(gobble_mem_bwd_llc):
vmovdqu -0x20(%rsi), %ymm0
vmovdqu -0x40(%rsi), %ymm1
vmovdqu -0x60(%rsi), %ymm2
vmovdqu -0x80(%rsi), %ymm3
lea -0x80(%rsi), %rsi
vmovdqa %ymm0, -0x20(%rdi)
vmovdqa %ymm1, -0x40(%rdi)
vmovdqa %ymm2, -0x60(%rdi)
vmovdqa %ymm3, -0x80(%rdi)
lea -0x80(%rdi), %rdi
add $-0x80, %rdx
jb L(gobble_mem_bwd_llc)
vmovdqu %ymm4, (%r10)
vzeroupper
vmovdqu %xmm5, (%rax)
vmovdqu %xmm6, 0x10(%rax)
vmovdqu %xmm7, 0x20(%rax)
vmovdqu %xmm8, 0x30(%rax)
vmovdqu %xmm9, 0x40(%rax)
vmovdqu %xmm10, 0x50(%rax)
vmovdqu %xmm11, 0x60(%rax)
vmovdqu %xmm12, 0x70(%rax)
ret
.p2align 4
L(gobble_big_data_bwd):
add $-0x80, %rdx
L(gobble_mem_bwd_loop):
prefetchnta -0x1c0(%rsi)
prefetchnta -0x280(%rsi)
vmovdqu -0x20(%rsi), %ymm0
vmovdqu -0x40(%rsi), %ymm1
vmovdqu -0x60(%rsi), %ymm2
vmovdqu -0x80(%rsi), %ymm3
lea -0x80(%rsi), %rsi
vmovntdq %ymm0, -0x20(%rdi)
vmovntdq %ymm1, -0x40(%rdi)
vmovntdq %ymm2, -0x60(%rdi)
vmovntdq %ymm3, -0x80(%rdi)
lea -0x80(%rdi), %rdi
add $-0x80, %rdx
jb L(gobble_mem_bwd_loop)
sfence
vmovdqu %ymm4, (%r10)
vzeroupper
vmovdqu %xmm5, (%rax)
vmovdqu %xmm6, 0x10(%rax)
vmovdqu %xmm7, 0x20(%rax)
vmovdqu %xmm8, 0x30(%rax)
vmovdqu %xmm9, 0x40(%rax)
vmovdqu %xmm10, 0x50(%rax)
vmovdqu %xmm11, 0x60(%rax)
vmovdqu %xmm12, 0x70(%rax)
ret
#endif
END (MEMCPY)
#endif
|
