| blob | cad6e1bfa7d5f237559655b2b12d3070300972c6 |
1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * Implement AES algorithm in Intel AES-NI instructions.
4 *
5 * The white paper of AES-NI instructions can be downloaded from:
6 * http://softwarecommunity.intel.com/isn/downloads/intelavx/AES-Instructions-Set_WP.pdf
7 *
8 * Copyright (C) 2008, Intel Corp.
9 * Author: Huang Ying <ying.huang@intel.com>
10 * Vinodh Gopal <vinodh.gopal@intel.com>
11 * Kahraman Akdemir
12 *
13 * Added RFC4106 AES-GCM support for 128-bit keys under the AEAD
14 * interface for 64-bit kernels.
15 * Authors: Erdinc Ozturk (erdinc.ozturk@intel.com)
16 * Aidan O'Mahony (aidan.o.mahony@intel.com)
17 * Adrian Hoban <adrian.hoban@intel.com>
18 * James Guilford (james.guilford@intel.com)
19 * Gabriele Paoloni <gabriele.paoloni@intel.com>
20 * Tadeusz Struk (tadeusz.struk@intel.com)
21 * Wajdi Feghali (wajdi.k.feghali@intel.com)
22 * Copyright (c) 2010, Intel Corporation.
23 *
24 * Ported x86_64 version to x86:
25 * Author: Mathias Krause <minipli@googlemail.com>
26 */
28 #include <linux/linkage.h>
29 #include <asm/inst.h>
30 #include <asm/frame.h>
31 #include <asm/nospec-branch.h>
33 /*
34 * The following macros are used to move an (un)aligned 16 byte value to/from
35 * an XMM register. This can done for either FP or integer values, for FP use
36 * movaps (move aligned packed single) or integer use movdqa (move double quad
37 * aligned). It doesn't make a performance difference which instruction is used
38 * since Nehalem (original Core i7) was released. However, the movaps is a byte
39 * shorter, so that is the one we'll use for now. (same for unaligned).
40 */
41 #define MOVADQ movaps
42 #define MOVUDQ movups
44 #ifdef __x86_64__
46 # constants in mergeable sections, linker can reorder and merge
47 .section .rodata.cst16.gf128mul_x_ble_mask, "aM", @progbits, 16
48 .align 16
49 .Lgf128mul_x_ble_mask:
50 .octa 0x00000000000000010000000000000087
51 .section .rodata.cst16.POLY, "aM", @progbits, 16
52 .align 16
53 POLY: .octa 0xC2000000000000000000000000000001
54 .section .rodata.cst16.TWOONE, "aM", @progbits, 16
55 .align 16
56 TWOONE: .octa 0x00000001000000000000000000000001
58 .section .rodata.cst16.SHUF_MASK, "aM", @progbits, 16
59 .align 16
60 SHUF_MASK: .octa 0x000102030405060708090A0B0C0D0E0F
61 .section .rodata.cst16.MASK1, "aM", @progbits, 16
62 .align 16
63 MASK1: .octa 0x0000000000000000ffffffffffffffff
64 .section .rodata.cst16.MASK2, "aM", @progbits, 16
65 .align 16
66 MASK2: .octa 0xffffffffffffffff0000000000000000
67 .section .rodata.cst16.ONE, "aM", @progbits, 16
68 .align 16
69 ONE: .octa 0x00000000000000000000000000000001
70 .section .rodata.cst16.F_MIN_MASK, "aM", @progbits, 16
71 .align 16
72 F_MIN_MASK: .octa 0xf1f2f3f4f5f6f7f8f9fafbfcfdfeff0
73 .section .rodata.cst16.dec, "aM", @progbits, 16
74 .align 16
75 dec: .octa 0x1
76 .section .rodata.cst16.enc, "aM", @progbits, 16
77 .align 16
78 enc: .octa 0x2
80 # order of these constants should not change.
81 # more specifically, ALL_F should follow SHIFT_MASK,
82 # and zero should follow ALL_F
83 .section .rodata, "a", @progbits
84 .align 16
85 SHIFT_MASK: .octa 0x0f0e0d0c0b0a09080706050403020100
86 ALL_F: .octa 0xffffffffffffffffffffffffffffffff
87 .octa 0x00000000000000000000000000000000
89 .text
92 #define STACK_OFFSET 8*3
94 #define AadHash 16*0
95 #define AadLen 16*1
96 #define InLen (16*1)+8
97 #define PBlockEncKey 16*2
98 #define OrigIV 16*3
99 #define CurCount 16*4
100 #define PBlockLen 16*5
101 #define HashKey 16*6 // store HashKey <<1 mod poly here
102 #define HashKey_2 16*7 // store HashKey^2 <<1 mod poly here
103 #define HashKey_3 16*8 // store HashKey^3 <<1 mod poly here
104 #define HashKey_4 16*9 // store HashKey^4 <<1 mod poly here
105 #define HashKey_k 16*10 // store XOR of High 64 bits and Low 64
106 // bits of HashKey <<1 mod poly here
107 //(for Karatsuba purposes)
108 #define HashKey_2_k 16*11 // store XOR of High 64 bits and Low 64
109 // bits of HashKey^2 <<1 mod poly here
110 // (for Karatsuba purposes)
111 #define HashKey_3_k 16*12 // store XOR of High 64 bits and Low 64
112 // bits of HashKey^3 <<1 mod poly here
113 // (for Karatsuba purposes)
114 #define HashKey_4_k 16*13 // store XOR of High 64 bits and Low 64
115 // bits of HashKey^4 <<1 mod poly here
116 // (for Karatsuba purposes)
118 #define arg1 rdi
119 #define arg2 rsi
120 #define arg3 rdx
121 #define arg4 rcx
122 #define arg5 r8
123 #define arg6 r9
124 #define arg7 STACK_OFFSET+8(%rsp)
125 #define arg8 STACK_OFFSET+16(%rsp)
126 #define arg9 STACK_OFFSET+24(%rsp)
127 #define arg10 STACK_OFFSET+32(%rsp)
128 #define arg11 STACK_OFFSET+40(%rsp)
129 #define keysize 2*15*16(%arg1)
130 #endif
133 #define STATE1 %xmm0
134 #define STATE2 %xmm4
135 #define STATE3 %xmm5
136 #define STATE4 %xmm6
137 #define STATE STATE1
138 #define IN1 %xmm1
139 #define IN2 %xmm7
140 #define IN3 %xmm8
141 #define IN4 %xmm9
142 #define IN IN1
143 #define KEY %xmm2
144 #define IV %xmm3
146 #define BSWAP_MASK %xmm10
147 #define CTR %xmm11
148 #define INC %xmm12
150 #define GF128MUL_MASK %xmm10
152 #ifdef __x86_64__
153 #define AREG %rax
154 #define KEYP %rdi
155 #define OUTP %rsi
156 #define UKEYP OUTP
157 #define INP %rdx
158 #define LEN %rcx
159 #define IVP %r8
160 #define KLEN %r9d
161 #define T1 %r10
162 #define TKEYP T1
163 #define T2 %r11
164 #define TCTR_LOW T2
165 #else
166 #define AREG %eax
167 #define KEYP %edi
168 #define OUTP AREG
169 #define UKEYP OUTP
170 #define INP %edx
171 #define LEN %esi
172 #define IVP %ebp
173 #define KLEN %ebx
174 #define T1 %ecx
175 #define TKEYP T1
176 #endif
178 .macro FUNC_SAVE
179 push %r12
180 push %r13
181 push %r14
182 #
183 # states of %xmm registers %xmm6:%xmm15 not saved
184 # all %xmm registers are clobbered
185 #
186 .endm
189 .macro FUNC_RESTORE
190 pop %r14
191 pop %r13
192 pop %r12
193 .endm
195 # Precompute hashkeys.
196 # Input: Hash subkey.
197 # Output: HashKeys stored in gcm_context_data. Only needs to be called
198 # once per key.
199 # clobbers r12, and tmp xmm registers.
200 .macro PRECOMPUTE SUBKEY TMP1 TMP2 TMP3 TMP4 TMP5 TMP6 TMP7
201 mov \SUBKEY, %r12
202 movdqu (%r12), \TMP3
203 movdqa SHUF_MASK(%rip), \TMP2
204 PSHUFB_XMM \TMP2, \TMP3
206 # precompute HashKey<<1 mod poly from the HashKey (required for GHASH)
208 movdqa \TMP3, \TMP2
209 psllq $1, \TMP3
210 psrlq $63, \TMP2
211 movdqa \TMP2, \TMP1
212 pslldq $8, \TMP2
213 psrldq $8, \TMP1
214 por \TMP2, \TMP3
216 # reduce HashKey<<1
218 pshufd $0x24, \TMP1, \TMP2
219 pcmpeqd TWOONE(%rip), \TMP2
220 pand POLY(%rip), \TMP2
221 pxor \TMP2, \TMP3
222 movdqu \TMP3, HashKey(%arg2)
224 movdqa \TMP3, \TMP5
225 pshufd $78, \TMP3, \TMP1
226 pxor \TMP3, \TMP1
227 movdqu \TMP1, HashKey_k(%arg2)
229 GHASH_MUL \TMP5, \TMP3, \TMP1, \TMP2, \TMP4, \TMP6, \TMP7
230 # TMP5 = HashKey^2<<1 (mod poly)
231 movdqu \TMP5, HashKey_2(%arg2)
232 # HashKey_2 = HashKey^2<<1 (mod poly)
233 pshufd $78, \TMP5, \TMP1
234 pxor \TMP5, \TMP1
235 movdqu \TMP1, HashKey_2_k(%arg2)
237 GHASH_MUL \TMP5, \TMP3, \TMP1, \TMP2, \TMP4, \TMP6, \TMP7
238 # TMP5 = HashKey^3<<1 (mod poly)
239 movdqu \TMP5, HashKey_3(%arg2)
240 pshufd $78, \TMP5, \TMP1
241 pxor \TMP5, \TMP1
242 movdqu \TMP1, HashKey_3_k(%arg2)
244 GHASH_MUL \TMP5, \TMP3, \TMP1, \TMP2, \TMP4, \TMP6, \TMP7
245 # TMP5 = HashKey^3<<1 (mod poly)
246 movdqu \TMP5, HashKey_4(%arg2)
247 pshufd $78, \TMP5, \TMP1
248 pxor \TMP5, \TMP1
249 movdqu \TMP1, HashKey_4_k(%arg2)
250 .endm
252 # GCM_INIT initializes a gcm_context struct to prepare for encoding/decoding.
253 # Clobbers rax, r10-r13 and xmm0-xmm6, %xmm13
254 .macro GCM_INIT Iv SUBKEY AAD AADLEN
255 mov \AADLEN, %r11
256 mov %r11, AadLen(%arg2) # ctx_data.aad_length = aad_length
257 xor %r11d, %r11d
258 mov %r11, InLen(%arg2) # ctx_data.in_length = 0
259 mov %r11, PBlockLen(%arg2) # ctx_data.partial_block_length = 0
260 mov %r11, PBlockEncKey(%arg2) # ctx_data.partial_block_enc_key = 0
261 mov \Iv, %rax
262 movdqu (%rax), %xmm0
263 movdqu %xmm0, OrigIV(%arg2) # ctx_data.orig_IV = iv
265 movdqa SHUF_MASK(%rip), %xmm2
266 PSHUFB_XMM %xmm2, %xmm0
267 movdqu %xmm0, CurCount(%arg2) # ctx_data.current_counter = iv
269 PRECOMPUTE \SUBKEY, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7,
270 movdqu HashKey(%arg2), %xmm13
272 CALC_AAD_HASH %xmm13, \AAD, \AADLEN, %xmm0, %xmm1, %xmm2, %xmm3, \
273 %xmm4, %xmm5, %xmm6
274 .endm
276 # GCM_ENC_DEC Encodes/Decodes given data. Assumes that the passed gcm_context
277 # struct has been initialized by GCM_INIT.
278 # Requires the input data be at least 1 byte long because of READ_PARTIAL_BLOCK
279 # Clobbers rax, r10-r13, and xmm0-xmm15
280 .macro GCM_ENC_DEC operation
281 movdqu AadHash(%arg2), %xmm8
282 movdqu HashKey(%arg2), %xmm13
283 add %arg5, InLen(%arg2)
285 xor %r11d, %r11d # initialise the data pointer offset as zero
286 PARTIAL_BLOCK %arg3 %arg4 %arg5 %r11 %xmm8 \operation
288 sub %r11, %arg5 # sub partial block data used
289 mov %arg5, %r13 # save the number of bytes
291 and $-16, %r13 # %r13 = %r13 - (%r13 mod 16)
292 mov %r13, %r12
293 # Encrypt/Decrypt first few blocks
295 and $(3<<4), %r12
296 jz _initial_num_blocks_is_0_\@
297 cmp $(2<<4), %r12
298 jb _initial_num_blocks_is_1_\@
299 je _initial_num_blocks_is_2_\@
300 _initial_num_blocks_is_3_\@:
301 INITIAL_BLOCKS_ENC_DEC %xmm9, %xmm10, %xmm13, %xmm11, %xmm12, %xmm0, \
302 %xmm1, %xmm2, %xmm3, %xmm4, %xmm8, %xmm5, %xmm6, 5, 678, \operation
303 sub $48, %r13
304 jmp _initial_blocks_\@
305 _initial_num_blocks_is_2_\@:
306 INITIAL_BLOCKS_ENC_DEC %xmm9, %xmm10, %xmm13, %xmm11, %xmm12, %xmm0, \
307 %xmm1, %xmm2, %xmm3, %xmm4, %xmm8, %xmm5, %xmm6, 6, 78, \operation
308 sub $32, %r13
309 jmp _initial_blocks_\@
310 _initial_num_blocks_is_1_\@:
311 INITIAL_BLOCKS_ENC_DEC %xmm9, %xmm10, %xmm13, %xmm11, %xmm12, %xmm0, \
312 %xmm1, %xmm2, %xmm3, %xmm4, %xmm8, %xmm5, %xmm6, 7, 8, \operation
313 sub $16, %r13
314 jmp _initial_blocks_\@
315 _initial_num_blocks_is_0_\@:
316 INITIAL_BLOCKS_ENC_DEC %xmm9, %xmm10, %xmm13, %xmm11, %xmm12, %xmm0, \
317 %xmm1, %xmm2, %xmm3, %xmm4, %xmm8, %xmm5, %xmm6, 8, 0, \operation
318 _initial_blocks_\@:
320 # Main loop - Encrypt/Decrypt remaining blocks
322 cmp $0, %r13
323 je _zero_cipher_left_\@
324 sub $64, %r13
325 je _four_cipher_left_\@
326 _crypt_by_4_\@:
327 GHASH_4_ENCRYPT_4_PARALLEL_\operation %xmm9, %xmm10, %xmm11, %xmm12, \
328 %xmm13, %xmm14, %xmm0, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, \
329 %xmm7, %xmm8, enc
330 add $64, %r11
331 sub $64, %r13
332 jne _crypt_by_4_\@
333 _four_cipher_left_\@:
334 GHASH_LAST_4 %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14, \
335 %xmm15, %xmm1, %xmm2, %xmm3, %xmm4, %xmm8
336 _zero_cipher_left_\@:
337 movdqu %xmm8, AadHash(%arg2)
338 movdqu %xmm0, CurCount(%arg2)
340 mov %arg5, %r13
341 and $15, %r13 # %r13 = arg5 (mod 16)
342 je _multiple_of_16_bytes_\@
344 mov %r13, PBlockLen(%arg2)
346 # Handle the last <16 Byte block separately
347 paddd ONE(%rip), %xmm0 # INCR CNT to get Yn
348 movdqu %xmm0, CurCount(%arg2)
349 movdqa SHUF_MASK(%rip), %xmm10
350 PSHUFB_XMM %xmm10, %xmm0
352 ENCRYPT_SINGLE_BLOCK %xmm0, %xmm1 # Encrypt(K, Yn)
353 movdqu %xmm0, PBlockEncKey(%arg2)
355 cmp $16, %arg5
356 jge _large_enough_update_\@
358 lea (%arg4,%r11,1), %r10
359 mov %r13, %r12
360 READ_PARTIAL_BLOCK %r10 %r12 %xmm2 %xmm1
361 jmp _data_read_\@
363 _large_enough_update_\@:
364 sub $16, %r11
365 add %r13, %r11
367 # receive the last <16 Byte block
368 movdqu (%arg4, %r11, 1), %xmm1
370 sub %r13, %r11
371 add $16, %r11
373 lea SHIFT_MASK+16(%rip), %r12
374 # adjust the shuffle mask pointer to be able to shift 16-r13 bytes
375 # (r13 is the number of bytes in plaintext mod 16)
376 sub %r13, %r12
377 # get the appropriate shuffle mask
378 movdqu (%r12), %xmm2
379 # shift right 16-r13 bytes
380 PSHUFB_XMM %xmm2, %xmm1
382 _data_read_\@:
383 lea ALL_F+16(%rip), %r12
384 sub %r13, %r12
386 .ifc \operation, dec
387 movdqa %xmm1, %xmm2
388 .endif
389 pxor %xmm1, %xmm0 # XOR Encrypt(K, Yn)
390 movdqu (%r12), %xmm1
391 # get the appropriate mask to mask out top 16-r13 bytes of xmm0
392 pand %xmm1, %xmm0 # mask out top 16-r13 bytes of xmm0
393 .ifc \operation, dec
394 pand %xmm1, %xmm2
395 movdqa SHUF_MASK(%rip), %xmm10
396 PSHUFB_XMM %xmm10 ,%xmm2
398 pxor %xmm2, %xmm8
399 .else
400 movdqa SHUF_MASK(%rip), %xmm10
401 PSHUFB_XMM %xmm10,%xmm0
403 pxor %xmm0, %xmm8
404 .endif
406 movdqu %xmm8, AadHash(%arg2)
407 .ifc \operation, enc
408 # GHASH computation for the last <16 byte block
409 movdqa SHUF_MASK(%rip), %xmm10
410 # shuffle xmm0 back to output as ciphertext
411 PSHUFB_XMM %xmm10, %xmm0
412 .endif
414 # Output %r13 bytes
415 MOVQ_R64_XMM %xmm0, %rax
416 cmp $8, %r13
417 jle _less_than_8_bytes_left_\@
418 mov %rax, (%arg3 , %r11, 1)
419 add $8, %r11
420 psrldq $8, %xmm0
421 MOVQ_R64_XMM %xmm0, %rax
422 sub $8, %r13
423 _less_than_8_bytes_left_\@:
424 mov %al, (%arg3, %r11, 1)
425 add $1, %r11
426 shr $8, %rax
427 sub $1, %r13
428 jne _less_than_8_bytes_left_\@
429 _multiple_of_16_bytes_\@:
430 .endm
432 # GCM_COMPLETE Finishes update of tag of last partial block
433 # Output: Authorization Tag (AUTH_TAG)
434 # Clobbers rax, r10-r12, and xmm0, xmm1, xmm5-xmm15
435 .macro GCM_COMPLETE AUTHTAG AUTHTAGLEN
436 movdqu AadHash(%arg2), %xmm8
437 movdqu HashKey(%arg2), %xmm13
439 mov PBlockLen(%arg2), %r12
441 cmp $0, %r12
442 je _partial_done\@
444 GHASH_MUL %xmm8, %xmm13, %xmm9, %xmm10, %xmm11, %xmm5, %xmm6
446 _partial_done\@:
447 mov AadLen(%arg2), %r12 # %r13 = aadLen (number of bytes)
448 shl $3, %r12 # convert into number of bits
449 movd %r12d, %xmm15 # len(A) in %xmm15
450 mov InLen(%arg2), %r12
451 shl $3, %r12 # len(C) in bits (*128)
452 MOVQ_R64_XMM %r12, %xmm1
454 pslldq $8, %xmm15 # %xmm15 = len(A)||0x0000000000000000
455 pxor %xmm1, %xmm15 # %xmm15 = len(A)||len(C)
456 pxor %xmm15, %xmm8
457 GHASH_MUL %xmm8, %xmm13, %xmm9, %xmm10, %xmm11, %xmm5, %xmm6
458 # final GHASH computation
459 movdqa SHUF_MASK(%rip), %xmm10
460 PSHUFB_XMM %xmm10, %xmm8
462 movdqu OrigIV(%arg2), %xmm0 # %xmm0 = Y0
463 ENCRYPT_SINGLE_BLOCK %xmm0, %xmm1 # E(K, Y0)
464 pxor %xmm8, %xmm0
465 _return_T_\@:
466 mov \AUTHTAG, %r10 # %r10 = authTag
467 mov \AUTHTAGLEN, %r11 # %r11 = auth_tag_len
468 cmp $16, %r11
469 je _T_16_\@
470 cmp $8, %r11
471 jl _T_4_\@
472 _T_8_\@:
473 MOVQ_R64_XMM %xmm0, %rax
474 mov %rax, (%r10)
475 add $8, %r10
476 sub $8, %r11
477 psrldq $8, %xmm0
478 cmp $0, %r11
479 je _return_T_done_\@
480 _T_4_\@:
481 movd %xmm0, %eax
482 mov %eax, (%r10)
483 add $4, %r10
484 sub $4, %r11
485 psrldq $4, %xmm0
486 cmp $0, %r11
487 je _return_T_done_\@
488 _T_123_\@:
489 movd %xmm0, %eax
490 cmp $2, %r11
491 jl _T_1_\@
492 mov %ax, (%r10)
493 cmp $2, %r11
494 je _return_T_done_\@
495 add $2, %r10
496 sar $16, %eax
497 _T_1_\@:
498 mov %al, (%r10)
499 jmp _return_T_done_\@
500 _T_16_\@:
501 movdqu %xmm0, (%r10)
502 _return_T_done_\@:
503 .endm
505 #ifdef __x86_64__
506 /* GHASH_MUL MACRO to implement: Data*HashKey mod (128,127,126,121,0)
507 *
508 *
509 * Input: A and B (128-bits each, bit-reflected)
510 * Output: C = A*B*x mod poly, (i.e. >>1 )
511 * To compute GH = GH*HashKey mod poly, give HK = HashKey<<1 mod poly as input
512 * GH = GH * HK * x mod poly which is equivalent to GH*HashKey mod poly.
513 *
514 */
515 .macro GHASH_MUL GH HK TMP1 TMP2 TMP3 TMP4 TMP5
516 movdqa \GH, \TMP1
517 pshufd $78, \GH, \TMP2
518 pshufd $78, \HK, \TMP3
519 pxor \GH, \TMP2 # TMP2 = a1+a0
520 pxor \HK, \TMP3 # TMP3 = b1+b0
521 PCLMULQDQ 0x11, \HK, \TMP1 # TMP1 = a1*b1
522 PCLMULQDQ 0x00, \HK, \GH # GH = a0*b0
523 PCLMULQDQ 0x00, \TMP3, \TMP2 # TMP2 = (a0+a1)*(b1+b0)
524 pxor \GH, \TMP2
525 pxor \TMP1, \TMP2 # TMP2 = (a0*b0)+(a1*b0)
526 movdqa \TMP2, \TMP3
527 pslldq $8, \TMP3 # left shift TMP3 2 DWs
528 psrldq $8, \TMP2 # right shift TMP2 2 DWs
529 pxor \TMP3, \GH
530 pxor \TMP2, \TMP1 # TMP2:GH holds the result of GH*HK
532 # first phase of the reduction
534 movdqa \GH, \TMP2
535 movdqa \GH, \TMP3
536 movdqa \GH, \TMP4 # copy GH into TMP2,TMP3 and TMP4
537 # in in order to perform
538 # independent shifts
539 pslld $31, \TMP2 # packed right shift <<31
540 pslld $30, \TMP3 # packed right shift <<30
541 pslld $25, \TMP4 # packed right shift <<25
542 pxor \TMP3, \TMP2 # xor the shifted versions
543 pxor \TMP4, \TMP2
544 movdqa \TMP2, \TMP5
545 psrldq $4, \TMP5 # right shift TMP5 1 DW
546 pslldq $12, \TMP2 # left shift TMP2 3 DWs
547 pxor \TMP2, \GH
549 # second phase of the reduction
551 movdqa \GH,\TMP2 # copy GH into TMP2,TMP3 and TMP4
552 # in in order to perform
553 # independent shifts
554 movdqa \GH,\TMP3
555 movdqa \GH,\TMP4
556 psrld $1,\TMP2 # packed left shift >>1
557 psrld $2,\TMP3 # packed left shift >>2
558 psrld $7,\TMP4 # packed left shift >>7
559 pxor \TMP3,\TMP2 # xor the shifted versions
560 pxor \TMP4,\TMP2
561 pxor \TMP5, \TMP2
562 pxor \TMP2, \GH
563 pxor \TMP1, \GH # result is in TMP1
564 .endm
566 # Reads DLEN bytes starting at DPTR and stores in XMMDst
567 # where 0 < DLEN < 16
568 # Clobbers %rax, DLEN and XMM1
569 .macro READ_PARTIAL_BLOCK DPTR DLEN XMM1 XMMDst
570 cmp $8, \DLEN
571 jl _read_lt8_\@
572 mov (\DPTR), %rax
573 MOVQ_R64_XMM %rax, \XMMDst
574 sub $8, \DLEN
575 jz _done_read_partial_block_\@
576 xor %eax, %eax
577 _read_next_byte_\@:
578 shl $8, %rax
579 mov 7(\DPTR, \DLEN, 1), %al
580 dec \DLEN
581 jnz _read_next_byte_\@
582 MOVQ_R64_XMM %rax, \XMM1
583 pslldq $8, \XMM1
584 por \XMM1, \XMMDst
585 jmp _done_read_partial_block_\@
586 _read_lt8_\@:
587 xor %eax, %eax
588 _read_next_byte_lt8_\@:
589 shl $8, %rax
590 mov -1(\DPTR, \DLEN, 1), %al
591 dec \DLEN
592 jnz _read_next_byte_lt8_\@
593 MOVQ_R64_XMM %rax, \XMMDst
594 _done_read_partial_block_\@:
595 .endm
597 # CALC_AAD_HASH: Calculates the hash of the data which will not be encrypted.
598 # clobbers r10-11, xmm14
599 .macro CALC_AAD_HASH HASHKEY AAD AADLEN TMP1 TMP2 TMP3 TMP4 TMP5 \
600 TMP6 TMP7
601 MOVADQ SHUF_MASK(%rip), %xmm14
602 mov \AAD, %r10 # %r10 = AAD
603 mov \AADLEN, %r11 # %r11 = aadLen
604 pxor \TMP7, \TMP7
605 pxor \TMP6, \TMP6
607 cmp $16, %r11
608 jl _get_AAD_rest\@
609 _get_AAD_blocks\@:
610 movdqu (%r10), \TMP7
611 PSHUFB_XMM %xmm14, \TMP7 # byte-reflect the AAD data
612 pxor \TMP7, \TMP6
613 GHASH_MUL \TMP6, \HASHKEY, \TMP1, \TMP2, \TMP3, \TMP4, \TMP5
614 add $16, %r10
615 sub $16, %r11
616 cmp $16, %r11
617 jge _get_AAD_blocks\@
619 movdqu \TMP6, \TMP7
621 /* read the last <16B of AAD */
622 _get_AAD_rest\@:
623 cmp $0, %r11
624 je _get_AAD_done\@
626 READ_PARTIAL_BLOCK %r10, %r11, \TMP1, \TMP7
627 PSHUFB_XMM %xmm14, \TMP7 # byte-reflect the AAD data
628 pxor \TMP6, \TMP7
629 GHASH_MUL \TMP7, \HASHKEY, \TMP1, \TMP2, \TMP3, \TMP4, \TMP5
630 movdqu \TMP7, \TMP6
632 _get_AAD_done\@:
633 movdqu \TMP6, AadHash(%arg2)
634 .endm
636 # PARTIAL_BLOCK: Handles encryption/decryption and the tag partial blocks
637 # between update calls.
638 # Requires the input data be at least 1 byte long due to READ_PARTIAL_BLOCK
639 # Outputs encrypted bytes, and updates hash and partial info in gcm_data_context
640 # Clobbers rax, r10, r12, r13, xmm0-6, xmm9-13
641 .macro PARTIAL_BLOCK CYPH_PLAIN_OUT PLAIN_CYPH_IN PLAIN_CYPH_LEN DATA_OFFSET \
642 AAD_HASH operation
643 mov PBlockLen(%arg2), %r13
644 cmp $0, %r13
645 je _partial_block_done_\@ # Leave Macro if no partial blocks
646 # Read in input data without over reading
647 cmp $16, \PLAIN_CYPH_LEN
648 jl _fewer_than_16_bytes_\@
649 movups (\PLAIN_CYPH_IN), %xmm1 # If more than 16 bytes, just fill xmm
650 jmp _data_read_\@
652 _fewer_than_16_bytes_\@:
653 lea (\PLAIN_CYPH_IN, \DATA_OFFSET, 1), %r10
654 mov \PLAIN_CYPH_LEN, %r12
655 READ_PARTIAL_BLOCK %r10 %r12 %xmm0 %xmm1
657 mov PBlockLen(%arg2), %r13
659 _data_read_\@: # Finished reading in data
661 movdqu PBlockEncKey(%arg2), %xmm9
662 movdqu HashKey(%arg2), %xmm13
664 lea SHIFT_MASK(%rip), %r12
666 # adjust the shuffle mask pointer to be able to shift r13 bytes
667 # r16-r13 is the number of bytes in plaintext mod 16)
668 add %r13, %r12
669 movdqu (%r12), %xmm2 # get the appropriate shuffle mask
670 PSHUFB_XMM %xmm2, %xmm9 # shift right r13 bytes
672 .ifc \operation, dec
673 movdqa %xmm1, %xmm3
674 pxor %xmm1, %xmm9 # Cyphertext XOR E(K, Yn)
676 mov \PLAIN_CYPH_LEN, %r10
677 add %r13, %r10
678 # Set r10 to be the amount of data left in CYPH_PLAIN_IN after filling
679 sub $16, %r10
680 # Determine if if partial block is not being filled and
681 # shift mask accordingly
682 jge _no_extra_mask_1_\@
683 sub %r10, %r12
684 _no_extra_mask_1_\@:
686 movdqu ALL_F-SHIFT_MASK(%r12), %xmm1
687 # get the appropriate mask to mask out bottom r13 bytes of xmm9
688 pand %xmm1, %xmm9 # mask out bottom r13 bytes of xmm9
690 pand %xmm1, %xmm3
691 movdqa SHUF_MASK(%rip), %xmm10
692 PSHUFB_XMM %xmm10, %xmm3
693 PSHUFB_XMM %xmm2, %xmm3
694 pxor %xmm3, \AAD_HASH
696 cmp $0, %r10
697 jl _partial_incomplete_1_\@
699 # GHASH computation for the last <16 Byte block
700 GHASH_MUL \AAD_HASH, %xmm13, %xmm0, %xmm10, %xmm11, %xmm5, %xmm6
701 xor %eax, %eax
703 mov %rax, PBlockLen(%arg2)
704 jmp _dec_done_\@
705 _partial_incomplete_1_\@:
706 add \PLAIN_CYPH_LEN, PBlockLen(%arg2)
707 _dec_done_\@:
708 movdqu \AAD_HASH, AadHash(%arg2)
709 .else
710 pxor %xmm1, %xmm9 # Plaintext XOR E(K, Yn)
712 mov \PLAIN_CYPH_LEN, %r10
713 add %r13, %r10
714 # Set r10 to be the amount of data left in CYPH_PLAIN_IN after filling
715 sub $16, %r10
716 # Determine if if partial block is not being filled and
717 # shift mask accordingly
718 jge _no_extra_mask_2_\@
719 sub %r10, %r12
720 _no_extra_mask_2_\@:
722 movdqu ALL_F-SHIFT_MASK(%r12), %xmm1
723 # get the appropriate mask to mask out bottom r13 bytes of xmm9
724 pand %xmm1, %xmm9
726 movdqa SHUF_MASK(%rip), %xmm1
727 PSHUFB_XMM %xmm1, %xmm9
728 PSHUFB_XMM %xmm2, %xmm9
729 pxor %xmm9, \AAD_HASH
731 cmp $0, %r10
732 jl _partial_incomplete_2_\@
734 # GHASH computation for the last <16 Byte block
735 GHASH_MUL \AAD_HASH, %xmm13, %xmm0, %xmm10, %xmm11, %xmm5, %xmm6
736 xor %eax, %eax
738 mov %rax, PBlockLen(%arg2)
739 jmp _encode_done_\@
740 _partial_incomplete_2_\@:
741 add \PLAIN_CYPH_LEN, PBlockLen(%arg2)
742 _encode_done_\@:
743 movdqu \AAD_HASH, AadHash(%arg2)
745 movdqa SHUF_MASK(%rip), %xmm10
746 # shuffle xmm9 back to output as ciphertext
747 PSHUFB_XMM %xmm10, %xmm9
748 PSHUFB_XMM %xmm2, %xmm9
749 .endif
750 # output encrypted Bytes
751 cmp $0, %r10
752 jl _partial_fill_\@
753 mov %r13, %r12
754 mov $16, %r13
755 # Set r13 to be the number of bytes to write out
756 sub %r12, %r13
757 jmp _count_set_\@
758 _partial_fill_\@:
759 mov \PLAIN_CYPH_LEN, %r13
760 _count_set_\@:
761 movdqa %xmm9, %xmm0
762 MOVQ_R64_XMM %xmm0, %rax
763 cmp $8, %r13
764 jle _less_than_8_bytes_left_\@
766 mov %rax, (\CYPH_PLAIN_OUT, \DATA_OFFSET, 1)
767 add $8, \DATA_OFFSET
768 psrldq $8, %xmm0
769 MOVQ_R64_XMM %xmm0, %rax
770 sub $8, %r13
771 _less_than_8_bytes_left_\@:
772 movb %al, (\CYPH_PLAIN_OUT, \DATA_OFFSET, 1)
773 add $1, \DATA_OFFSET
774 shr $8, %rax
775 sub $1, %r13
776 jne _less_than_8_bytes_left_\@
777 _partial_block_done_\@:
778 .endm # PARTIAL_BLOCK
780 /*
781 * if a = number of total plaintext bytes
782 * b = floor(a/16)
783 * num_initial_blocks = b mod 4
784 * encrypt the initial num_initial_blocks blocks and apply ghash on
785 * the ciphertext
786 * %r10, %r11, %r12, %rax, %xmm5, %xmm6, %xmm7, %xmm8, %xmm9 registers
787 * are clobbered
788 * arg1, %arg2, %arg3 are used as a pointer only, not modified
789 */
792 .macro INITIAL_BLOCKS_ENC_DEC TMP1 TMP2 TMP3 TMP4 TMP5 XMM0 XMM1 \
793 XMM2 XMM3 XMM4 XMMDst TMP6 TMP7 i i_seq operation
794 MOVADQ SHUF_MASK(%rip), %xmm14
796 movdqu AadHash(%arg2), %xmm\i # XMM0 = Y0
798 # start AES for num_initial_blocks blocks
800 movdqu CurCount(%arg2), \XMM0 # XMM0 = Y0
802 .if (\i == 5) || (\i == 6) || (\i == 7)
804 MOVADQ ONE(%RIP),\TMP1
805 MOVADQ 0(%arg1),\TMP2
806 .irpc index, \i_seq
807 paddd \TMP1, \XMM0 # INCR Y0
808 .ifc \operation, dec
809 movdqa \XMM0, %xmm\index
810 .else
811 MOVADQ \XMM0, %xmm\index
812 .endif
813 PSHUFB_XMM %xmm14, %xmm\index # perform a 16 byte swap
814 pxor \TMP2, %xmm\index
815 .endr
816 lea 0x10(%arg1),%r10
817 mov keysize,%eax
818 shr $2,%eax # 128->4, 192->6, 256->8
819 add $5,%eax # 128->9, 192->11, 256->13
821 aes_loop_initial_\@:
822 MOVADQ (%r10),\TMP1
823 .irpc index, \i_seq
824 AESENC \TMP1, %xmm\index
825 .endr
826 add $16,%r10
827 sub $1,%eax
828 jnz aes_loop_initial_\@
830 MOVADQ (%r10), \TMP1
831 .irpc index, \i_seq
832 AESENCLAST \TMP1, %xmm\index # Last Round
833 .endr
834 .irpc index, \i_seq
835 movdqu (%arg4 , %r11, 1), \TMP1
836 pxor \TMP1, %xmm\index
837 movdqu %xmm\index, (%arg3 , %r11, 1)
838 # write back plaintext/ciphertext for num_initial_blocks
839 add $16, %r11
841 .ifc \operation, dec
842 movdqa \TMP1, %xmm\index
843 .endif
844 PSHUFB_XMM %xmm14, %xmm\index
846 # prepare plaintext/ciphertext for GHASH computation
847 .endr
848 .endif
850 # apply GHASH on num_initial_blocks blocks
852 .if \i == 5
853 pxor %xmm5, %xmm6
854 GHASH_MUL %xmm6, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1
855 pxor %xmm6, %xmm7
856 GHASH_MUL %xmm7, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1
857 pxor %xmm7, %xmm8
858 GHASH_MUL %xmm8, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1
859 .elseif \i == 6
860 pxor %xmm6, %xmm7
861 GHASH_MUL %xmm7, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1
862 pxor %xmm7, %xmm8
863 GHASH_MUL %xmm8, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1
864 .elseif \i == 7
865 pxor %xmm7, %xmm8
866 GHASH_MUL %xmm8, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1
867 .endif
868 cmp $64, %r13
869 jl _initial_blocks_done\@
870 # no need for precomputed values
871 /*
872 *
873 * Precomputations for HashKey parallel with encryption of first 4 blocks.
874 * Haskey_i_k holds XORed values of the low and high parts of the Haskey_i
875 */
876 MOVADQ ONE(%RIP),\TMP1
877 paddd \TMP1, \XMM0 # INCR Y0
878 MOVADQ \XMM0, \XMM1
879 PSHUFB_XMM %xmm14, \XMM1 # perform a 16 byte swap
881 paddd \TMP1, \XMM0 # INCR Y0
882 MOVADQ \XMM0, \XMM2
883 PSHUFB_XMM %xmm14, \XMM2 # perform a 16 byte swap
885 paddd \TMP1, \XMM0 # INCR Y0
886 MOVADQ \XMM0, \XMM3
887 PSHUFB_XMM %xmm14, \XMM3 # perform a 16 byte swap
889 paddd \TMP1, \XMM0 # INCR Y0
890 MOVADQ \XMM0, \XMM4
891 PSHUFB_XMM %xmm14, \XMM4 # perform a 16 byte swap
893 MOVADQ 0(%arg1),\TMP1
894 pxor \TMP1, \XMM1
895 pxor \TMP1, \XMM2
896 pxor \TMP1, \XMM3
897 pxor \TMP1, \XMM4
898 .irpc index, 1234 # do 4 rounds
899 movaps 0x10*\index(%arg1), \TMP1
900 AESENC \TMP1, \XMM1
901 AESENC \TMP1, \XMM2
902 AESENC \TMP1, \XMM3
903 AESENC \TMP1, \XMM4
904 .endr
905 .irpc index, 56789 # do next 5 rounds
906 movaps 0x10*\index(%arg1), \TMP1
907 AESENC \TMP1, \XMM1
908 AESENC \TMP1, \XMM2
909 AESENC \TMP1, \XMM3
910 AESENC \TMP1, \XMM4
911 .endr
912 lea 0xa0(%arg1),%r10
913 mov keysize,%eax
914 shr $2,%eax # 128->4, 192->6, 256->8
915 sub $4,%eax # 128->0, 192->2, 256->4
916 jz aes_loop_pre_done\@
918 aes_loop_pre_\@:
919 MOVADQ (%r10),\TMP2
920 .irpc index, 1234
921 AESENC \TMP2, %xmm\index
922 .endr
923 add $16,%r10
924 sub $1,%eax
925 jnz aes_loop_pre_\@
927 aes_loop_pre_done\@:
928 MOVADQ (%r10), \TMP2
929 AESENCLAST \TMP2, \XMM1
930 AESENCLAST \TMP2, \XMM2
931 AESENCLAST \TMP2, \XMM3
932 AESENCLAST \TMP2, \XMM4
933 movdqu 16*0(%arg4 , %r11 , 1), \TMP1
934 pxor \TMP1, \XMM1
935 .ifc \operation, dec
936 movdqu \XMM1, 16*0(%arg3 , %r11 , 1)
937 movdqa \TMP1, \XMM1
938 .endif
939 movdqu 16*1(%arg4 , %r11 , 1), \TMP1
940 pxor \TMP1, \XMM2
941 .ifc \operation, dec
942 movdqu \XMM2, 16*1(%arg3 , %r11 , 1)
943 movdqa \TMP1, \XMM2
944 .endif
945 movdqu 16*2(%arg4 , %r11 , 1), \TMP1
946 pxor \TMP1, \XMM3
947 .ifc \operation, dec
948 movdqu \XMM3, 16*2(%arg3 , %r11 , 1)
949 movdqa \TMP1, \XMM3
950 .endif
951 movdqu 16*3(%arg4 , %r11 , 1), \TMP1
952 pxor \TMP1, \XMM4
953 .ifc \operation, dec
954 movdqu \XMM4, 16*3(%arg3 , %r11 , 1)
955 movdqa \TMP1, \XMM4
956 .else
957 movdqu \XMM1, 16*0(%arg3 , %r11 , 1)
958 movdqu \XMM2, 16*1(%arg3 , %r11 , 1)
959 movdqu \XMM3, 16*2(%arg3 , %r11 , 1)
960 movdqu \XMM4, 16*3(%arg3 , %r11 , 1)
961 .endif
963 add $64, %r11
964 PSHUFB_XMM %xmm14, \XMM1 # perform a 16 byte swap
965 pxor \XMMDst, \XMM1
966 # combine GHASHed value with the corresponding ciphertext
967 PSHUFB_XMM %xmm14, \XMM2 # perform a 16 byte swap
968 PSHUFB_XMM %xmm14, \XMM3 # perform a 16 byte swap
969 PSHUFB_XMM %xmm14, \XMM4 # perform a 16 byte swap
971 _initial_blocks_done\@:
973 .endm
975 /*
976 * encrypt 4 blocks at a time
977 * ghash the 4 previously encrypted ciphertext blocks
978 * arg1, %arg3, %arg4 are used as pointers only, not modified
979 * %r11 is the data offset value
980 */
981 .macro GHASH_4_ENCRYPT_4_PARALLEL_ENC TMP1 TMP2 TMP3 TMP4 TMP5 \
982 TMP6 XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 XMM8 operation
984 movdqa \XMM1, \XMM5
985 movdqa \XMM2, \XMM6
986 movdqa \XMM3, \XMM7
987 movdqa \XMM4, \XMM8
989 movdqa SHUF_MASK(%rip), %xmm15
990 # multiply TMP5 * HashKey using karatsuba
992 movdqa \XMM5, \TMP4
993 pshufd $78, \XMM5, \TMP6
994 pxor \XMM5, \TMP6
995 paddd ONE(%rip), \XMM0 # INCR CNT
996 movdqu HashKey_4(%arg2), \TMP5
997 PCLMULQDQ 0x11, \TMP5, \TMP4 # TMP4 = a1*b1
998 movdqa \XMM0, \XMM1
999 paddd ONE(%rip), \XMM0 # INCR CNT
1000 movdqa \XMM0, \XMM2
1001 paddd ONE(%rip), \XMM0 # INCR CNT
1002 movdqa \XMM0, \XMM3
1003 paddd ONE(%rip), \XMM0 # INCR CNT
1004 movdqa \XMM0, \XMM4
1005 PSHUFB_XMM %xmm15, \XMM1 # perform a 16 byte swap
1006 PCLMULQDQ 0x00, \TMP5, \XMM5 # XMM5 = a0*b0
1007 PSHUFB_XMM %xmm15, \XMM2 # perform a 16 byte swap
1008 PSHUFB_XMM %xmm15, \XMM3 # perform a 16 byte swap
1009 PSHUFB_XMM %xmm15, \XMM4 # perform a 16 byte swap
1011 pxor (%arg1), \XMM1
1012 pxor (%arg1), \XMM2
1013 pxor (%arg1), \XMM3
1014 pxor (%arg1), \XMM4
1015 movdqu HashKey_4_k(%arg2), \TMP5
1016 PCLMULQDQ 0x00, \TMP5, \TMP6 # TMP6 = (a1+a0)*(b1+b0)
1017 movaps 0x10(%arg1), \TMP1
1018 AESENC \TMP1, \XMM1 # Round 1
1019 AESENC \TMP1, \XMM2
1020 AESENC \TMP1, \XMM3
1021 AESENC \TMP1, \XMM4
1022 movaps 0x20(%arg1), \TMP1
1023 AESENC \TMP1, \XMM1 # Round 2
1024 AESENC \TMP1, \XMM2
1025 AESENC \TMP1, \XMM3
1026 AESENC \TMP1, \XMM4
1027 movdqa \XMM6, \TMP1
1028 pshufd $78, \XMM6, \TMP2
1029 pxor \XMM6, \TMP2
1030 movdqu HashKey_3(%arg2), \TMP5
1031 PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1 * b1
1032 movaps 0x30(%arg1), \TMP3
1033 AESENC \TMP3, \XMM1 # Round 3
1034 AESENC \TMP3, \XMM2
1035 AESENC \TMP3, \XMM3
1036 AESENC \TMP3, \XMM4
1037 PCLMULQDQ 0x00, \TMP5, \XMM6 # XMM6 = a0*b0
1038 movaps 0x40(%arg1), \TMP3
1039 AESENC \TMP3, \XMM1 # Round 4
1040 AESENC \TMP3, \XMM2
1041 AESENC \TMP3, \XMM3
1042 AESENC \TMP3, \XMM4
1043 movdqu HashKey_3_k(%arg2), \TMP5
1044 PCLMULQDQ 0x00, \TMP5, \TMP2 # TMP2 = (a1+a0)*(b1+b0)
1045 movaps 0x50(%arg1), \TMP3
1046 AESENC \TMP3, \XMM1 # Round 5
1047 AESENC \TMP3, \XMM2
1048 AESENC \TMP3, \XMM3
1049 AESENC \TMP3, \XMM4
1050 pxor \TMP1, \TMP4
1051 # accumulate the results in TMP4:XMM5, TMP6 holds the middle part
1052 pxor \XMM6, \XMM5
1053 pxor \TMP2, \TMP6
1054 movdqa \XMM7, \TMP1
1055 pshufd $78, \XMM7, \TMP2
1056 pxor \XMM7, \TMP2
1057 movdqu HashKey_2(%arg2), \TMP5
1059 # Multiply TMP5 * HashKey using karatsuba
1061 PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1*b1
1062 movaps 0x60(%arg1), \TMP3
1063 AESENC \TMP3, \XMM1 # Round 6
1064 AESENC \TMP3, \XMM2
1065 AESENC \TMP3, \XMM3
1066 AESENC \TMP3, \XMM4
1067 PCLMULQDQ 0x00, \TMP5, \XMM7 # XMM7 = a0*b0
1068 movaps 0x70(%arg1), \TMP3
1069 AESENC \TMP3, \XMM1 # Round 7
1070 AESENC \TMP3, \XMM2
1071 AESENC \TMP3, \XMM3
1072 AESENC \TMP3, \XMM4
1073 movdqu HashKey_2_k(%arg2), \TMP5
1074 PCLMULQDQ 0x00, \TMP5, \TMP2 # TMP2 = (a1+a0)*(b1+b0)
1075 movaps 0x80(%arg1), \TMP3
1076 AESENC \TMP3, \XMM1 # Round 8
1077 AESENC \TMP3, \XMM2
1078 AESENC \TMP3, \XMM3
1079 AESENC \TMP3, \XMM4
1080 pxor \TMP1, \TMP4
1081 # accumulate the results in TMP4:XMM5, TMP6 holds the middle part
1082 pxor \XMM7, \XMM5
1083 pxor \TMP2, \TMP6
1085 # Multiply XMM8 * HashKey
1086 # XMM8 and TMP5 hold the values for the two operands
1088 movdqa \XMM8, \TMP1
1089 pshufd $78, \XMM8, \TMP2
1090 pxor \XMM8, \TMP2
1091 movdqu HashKey(%arg2), \TMP5
1092 PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1*b1
1093 movaps 0x90(%arg1), \TMP3
1094 AESENC \TMP3, \XMM1 # Round 9
1095 AESENC \TMP3, \XMM2
1096 AESENC \TMP3, \XMM3
1097 AESENC \TMP3, \XMM4
1098 PCLMULQDQ 0x00, \TMP5, \XMM8 # XMM8 = a0*b0
1099 lea 0xa0(%arg1),%r10
1100 mov keysize,%eax
1101 shr $2,%eax # 128->4, 192->6, 256->8
1102 sub $4,%eax # 128->0, 192->2, 256->4
1103 jz aes_loop_par_enc_done\@
1105 aes_loop_par_enc\@:
1106 MOVADQ (%r10),\TMP3
1107 .irpc index, 1234
1108 AESENC \TMP3, %xmm\index
1109 .endr
1110 add $16,%r10
1111 sub $1,%eax
1112 jnz aes_loop_par_enc\@
1114 aes_loop_par_enc_done\@:
1115 MOVADQ (%r10), \TMP3
1116 AESENCLAST \TMP3, \XMM1 # Round 10
1117 AESENCLAST \TMP3, \XMM2
1118 AESENCLAST \TMP3, \XMM3
1119 AESENCLAST \TMP3, \XMM4
1120 movdqu HashKey_k(%arg2), \TMP5
1121 PCLMULQDQ 0x00, \TMP5, \TMP2 # TMP2 = (a1+a0)*(b1+b0)
1122 movdqu (%arg4,%r11,1), \TMP3
1123 pxor \TMP3, \XMM1 # Ciphertext/Plaintext XOR EK
1124 movdqu 16(%arg4,%r11,1), \TMP3
1125 pxor \TMP3, \XMM2 # Ciphertext/Plaintext XOR EK
1126 movdqu 32(%arg4,%r11,1), \TMP3
1127 pxor \TMP3, \XMM3 # Ciphertext/Plaintext XOR EK
1128 movdqu 48(%arg4,%r11,1), \TMP3
1129 pxor \TMP3, \XMM4 # Ciphertext/Plaintext XOR EK
1130 movdqu \XMM1, (%arg3,%r11,1) # Write to the ciphertext buffer
1131 movdqu \XMM2, 16(%arg3,%r11,1) # Write to the ciphertext buffer
1132 movdqu \XMM3, 32(%arg3,%r11,1) # Write to the ciphertext buffer
1133 movdqu \XMM4, 48(%arg3,%r11,1) # Write to the ciphertext buffer
1134 PSHUFB_XMM %xmm15, \XMM1 # perform a 16 byte swap
1135 PSHUFB_XMM %xmm15, \XMM2 # perform a 16 byte swap
1136 PSHUFB_XMM %xmm15, \XMM3 # perform a 16 byte swap
1137 PSHUFB_XMM %xmm15, \XMM4 # perform a 16 byte swap
1139 pxor \TMP4, \TMP1
1140 pxor \XMM8, \XMM5
1141 pxor \TMP6, \TMP2
1142 pxor \TMP1, \TMP2
1143 pxor \XMM5, \TMP2
1144 movdqa \TMP2, \TMP3
1145 pslldq $8, \TMP3 # left shift TMP3 2 DWs
1146 psrldq $8, \TMP2 # right shift TMP2 2 DWs
1147 pxor \TMP3, \XMM5
1148 pxor \TMP2, \TMP1 # accumulate the results in TMP1:XMM5
1150 # first phase of reduction
1152 movdqa \XMM5, \TMP2
1153 movdqa \XMM5, \TMP3
1154 movdqa \XMM5, \TMP4
1155 # move XMM5 into TMP2, TMP3, TMP4 in order to perform shifts independently
1156 pslld $31, \TMP2 # packed right shift << 31
1157 pslld $30, \TMP3 # packed right shift << 30
1158 pslld $25, \TMP4 # packed right shift << 25
1159 pxor \TMP3, \TMP2 # xor the shifted versions
1160 pxor \TMP4, \TMP2
1161 movdqa \TMP2, \TMP5
1162 psrldq $4, \TMP5 # right shift T5 1 DW
1163 pslldq $12, \TMP2 # left shift T2 3 DWs
1164 pxor \TMP2, \XMM5
1166 # second phase of reduction
1168 movdqa \XMM5,\TMP2 # make 3 copies of XMM5 into TMP2, TMP3, TMP4
1169 movdqa \XMM5,\TMP3
1170 movdqa \XMM5,\TMP4
1171 psrld $1, \TMP2 # packed left shift >>1
1172 psrld $2, \TMP3 # packed left shift >>2
1173 psrld $7, \TMP4 # packed left shift >>7
1174 pxor \TMP3,\TMP2 # xor the shifted versions
1175 pxor \TMP4,\TMP2
1176 pxor \TMP5, \TMP2
1177 pxor \TMP2, \XMM5
1178 pxor \TMP1, \XMM5 # result is in TMP1
1180 pxor \XMM5, \XMM1
1181 .endm
1183 /*
1184 * decrypt 4 blocks at a time
1185 * ghash the 4 previously decrypted ciphertext blocks
1186 * arg1, %arg3, %arg4 are used as pointers only, not modified
1187 * %r11 is the data offset value
1188 */
1189 .macro GHASH_4_ENCRYPT_4_PARALLEL_DEC TMP1 TMP2 TMP3 TMP4 TMP5 \
1190 TMP6 XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 XMM8 operation
1192 movdqa \XMM1, \XMM5
1193 movdqa \XMM2, \XMM6
1194 movdqa \XMM3, \XMM7
1195 movdqa \XMM4, \XMM8
1197 movdqa SHUF_MASK(%rip), %xmm15
1198 # multiply TMP5 * HashKey using karatsuba
1200 movdqa \XMM5, \TMP4
1201 pshufd $78, \XMM5, \TMP6
1202 pxor \XMM5, \TMP6
1203 paddd ONE(%rip), \XMM0 # INCR CNT
1204 movdqu HashKey_4(%arg2), \TMP5
1205 PCLMULQDQ 0x11, \TMP5, \TMP4 # TMP4 = a1*b1
1206 movdqa \XMM0, \XMM1
1207 paddd ONE(%rip), \XMM0 # INCR CNT
1208 movdqa \XMM0, \XMM2
1209 paddd ONE(%rip), \XMM0 # INCR CNT
1210 movdqa \XMM0, \XMM3
1211 paddd ONE(%rip), \XMM0 # INCR CNT
1212 movdqa \XMM0, \XMM4
1213 PSHUFB_XMM %xmm15, \XMM1 # perform a 16 byte swap
1214 PCLMULQDQ 0x00, \TMP5, \XMM5 # XMM5 = a0*b0
1215 PSHUFB_XMM %xmm15, \XMM2 # perform a 16 byte swap
1216 PSHUFB_XMM %xmm15, \XMM3 # perform a 16 byte swap
1217 PSHUFB_XMM %xmm15, \XMM4 # perform a 16 byte swap
1219 pxor (%arg1), \XMM1
1220 pxor (%arg1), \XMM2
1221 pxor (%arg1), \XMM3
1222 pxor (%arg1), \XMM4
1223 movdqu HashKey_4_k(%arg2), \TMP5
1224 PCLMULQDQ 0x00, \TMP5, \TMP6 # TMP6 = (a1+a0)*(b1+b0)
1225 movaps 0x10(%arg1), \TMP1
1226 AESENC \TMP1, \XMM1 # Round 1
1227 AESENC \TMP1, \XMM2
1228 AESENC \TMP1, \XMM3
1229 AESENC \TMP1, \XMM4
1230 movaps 0x20(%arg1), \TMP1
1231 AESENC \TMP1, \XMM1 # Round 2
1232 AESENC \TMP1, \XMM2
1233 AESENC \TMP1, \XMM3
1234 AESENC \TMP1, \XMM4
1235 movdqa \XMM6, \TMP1
1236 pshufd $78, \XMM6, \TMP2
1237 pxor \XMM6, \TMP2
1238 movdqu HashKey_3(%arg2), \TMP5
1239 PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1 * b1
1240 movaps 0x30(%arg1), \TMP3
1241 AESENC \TMP3, \XMM1 # Round 3
1242 AESENC \TMP3, \XMM2
1243 AESENC \TMP3, \XMM3
1244 AESENC \TMP3, \XMM4
1245 PCLMULQDQ 0x00, \TMP5, \XMM6 # XMM6 = a0*b0
1246 movaps 0x40(%arg1), \TMP3
1247 AESENC \TMP3, \XMM1 # Round 4
1248 AESENC \TMP3, \XMM2
1249 AESENC \TMP3, \XMM3
1250 AESENC \TMP3, \XMM4
1251 movdqu HashKey_3_k(%arg2), \TMP5
1252 PCLMULQDQ 0x00, \TMP5, \TMP2 # TMP2 = (a1+a0)*(b1+b0)
1253 movaps 0x50(%arg1), \TMP3
1254 AESENC \TMP3, \XMM1 # Round 5
1255 AESENC \TMP3, \XMM2
1256 AESENC \TMP3, \XMM3
1257 AESENC \TMP3, \XMM4
1258 pxor \TMP1, \TMP4
1259 # accumulate the results in TMP4:XMM5, TMP6 holds the middle part
1260 pxor \XMM6, \XMM5
1261 pxor \TMP2, \TMP6
1262 movdqa \XMM7, \TMP1
1263 pshufd $78, \XMM7, \TMP2
1264 pxor \XMM7, \TMP2
1265 movdqu HashKey_2(%arg2), \TMP5
1267 # Multiply TMP5 * HashKey using karatsuba
1269 PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1*b1
1270 movaps 0x60(%arg1), \TMP3
1271 AESENC \TMP3, \XMM1 # Round 6
1272 AESENC \TMP3, \XMM2
1273 AESENC \TMP3, \XMM3
1274 AESENC \TMP3, \XMM4
1275 PCLMULQDQ 0x00, \TMP5, \XMM7 # XMM7 = a0*b0
1276 movaps 0x70(%arg1), \TMP3
1277 AESENC \TMP3, \XMM1 # Round 7
1278 AESENC \TMP3, \XMM2
1279 AESENC \TMP3, \XMM3
1280 AESENC \TMP3, \XMM4
1281 movdqu HashKey_2_k(%arg2), \TMP5
1282 PCLMULQDQ 0x00, \TMP5, \TMP2 # TMP2 = (a1+a0)*(b1+b0)
1283 movaps 0x80(%arg1), \TMP3
1284 AESENC \TMP3, \XMM1 # Round 8
1285 AESENC \TMP3, \XMM2
1286 AESENC \TMP3, \XMM3
1287 AESENC \TMP3, \XMM4
1288 pxor \TMP1, \TMP4
1289 # accumulate the results in TMP4:XMM5, TMP6 holds the middle part
1290 pxor \XMM7, \XMM5
1291 pxor \TMP2, \TMP6
1293 # Multiply XMM8 * HashKey
1294 # XMM8 and TMP5 hold the values for the two operands
1296 movdqa \XMM8, \TMP1
1297 pshufd $78, \XMM8, \TMP2
1298 pxor \XMM8, \TMP2
1299 movdqu HashKey(%arg2), \TMP5
1300 PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1*b1
1301 movaps 0x90(%arg1), \TMP3
1302 AESENC \TMP3, \XMM1 # Round 9
1303 AESENC \TMP3, \XMM2
1304 AESENC \TMP3, \XMM3
1305 AESENC \TMP3, \XMM4
1306 PCLMULQDQ 0x00, \TMP5, \XMM8 # XMM8 = a0*b0
1307 lea 0xa0(%arg1),%r10
1308 mov keysize,%eax
1309 shr $2,%eax # 128->4, 192->6, 256->8
1310 sub $4,%eax # 128->0, 192->2, 256->4
1311 jz aes_loop_par_dec_done\@
1313 aes_loop_par_dec\@:
1314 MOVADQ (%r10),\TMP3
1315 .irpc index, 1234
1316 AESENC \TMP3, %xmm\index
1317 .endr
1318 add $16,%r10
1319 sub $1,%eax
1320 jnz aes_loop_par_dec\@
1322 aes_loop_par_dec_done\@:
1323 MOVADQ (%r10), \TMP3
1324 AESENCLAST \TMP3, \XMM1 # last round
1325 AESENCLAST \TMP3, \XMM2
1326 AESENCLAST \TMP3, \XMM3
1327 AESENCLAST \TMP3, \XMM4
1328 movdqu HashKey_k(%arg2), \TMP5
1329 PCLMULQDQ 0x00, \TMP5, \TMP2 # TMP2 = (a1+a0)*(b1+b0)
1330 movdqu (%arg4,%r11,1), \TMP3
1331 pxor \TMP3, \XMM1 # Ciphertext/Plaintext XOR EK
1332 movdqu \XMM1, (%arg3,%r11,1) # Write to plaintext buffer
1333 movdqa \TMP3, \XMM1
1334 movdqu 16(%arg4,%r11,1), \TMP3
1335 pxor \TMP3, \XMM2 # Ciphertext/Plaintext XOR EK
1336 movdqu \XMM2, 16(%arg3,%r11,1) # Write to plaintext buffer
1337 movdqa \TMP3, \XMM2
1338 movdqu 32(%arg4,%r11,1), \TMP3
1339 pxor \TMP3, \XMM3 # Ciphertext/Plaintext XOR EK
1340 movdqu \XMM3, 32(%arg3,%r11,1) # Write to plaintext buffer
1341 movdqa \TMP3, \XMM3
1342 movdqu 48(%arg4,%r11,1), \TMP3
1343 pxor \TMP3, \XMM4 # Ciphertext/Plaintext XOR EK
1344 movdqu \XMM4, 48(%arg3,%r11,1) # Write to plaintext buffer
1345 movdqa \TMP3, \XMM4
1346 PSHUFB_XMM %xmm15, \XMM1 # perform a 16 byte swap
1347 PSHUFB_XMM %xmm15, \XMM2 # perform a 16 byte swap
1348 PSHUFB_XMM %xmm15, \XMM3 # perform a 16 byte swap
1349 PSHUFB_XMM %xmm15, \XMM4 # perform a 16 byte swap
1351 pxor \TMP4, \TMP1
1352 pxor \XMM8, \XMM5
1353 pxor \TMP6, \TMP2
1354 pxor \TMP1, \TMP2
1355 pxor \XMM5, \TMP2
1356 movdqa \TMP2, \TMP3
1357 pslldq $8, \TMP3 # left shift TMP3 2 DWs
1358 psrldq $8, \TMP2 # right shift TMP2 2 DWs
1359 pxor \TMP3, \XMM5
1360 pxor \TMP2, \TMP1 # accumulate the results in TMP1:XMM5
1362 # first phase of reduction
1364 movdqa \XMM5, \TMP2
1365 movdqa \XMM5, \TMP3
1366 movdqa \XMM5, \TMP4
1367 # move XMM5 into TMP2, TMP3, TMP4 in order to perform shifts independently
1368 pslld $31, \TMP2 # packed right shift << 31
1369 pslld $30, \TMP3 # packed right shift << 30
1370 pslld $25, \TMP4 # packed right shift << 25
1371 pxor \TMP3, \TMP2 # xor the shifted versions
1372 pxor \TMP4, \TMP2
1373 movdqa \TMP2, \TMP5
1374 psrldq $4, \TMP5 # right shift T5 1 DW
1375 pslldq $12, \TMP2 # left shift T2 3 DWs
1376 pxor \TMP2, \XMM5
1378 # second phase of reduction
1380 movdqa \XMM5,\TMP2 # make 3 copies of XMM5 into TMP2, TMP3, TMP4
1381 movdqa \XMM5,\TMP3
1382 movdqa \XMM5,\TMP4
1383 psrld $1, \TMP2 # packed left shift >>1
1384 psrld $2, \TMP3 # packed left shift >>2
1385 psrld $7, \TMP4 # packed left shift >>7
1386 pxor \TMP3,\TMP2 # xor the shifted versions
1387 pxor \TMP4,\TMP2
1388 pxor \TMP5, \TMP2
1389 pxor \TMP2, \XMM5
1390 pxor \TMP1, \XMM5 # result is in TMP1
1392 pxor \XMM5, \XMM1
1393 .endm
1395 /* GHASH the last 4 ciphertext blocks. */
1396 .macro GHASH_LAST_4 TMP1 TMP2 TMP3 TMP4 TMP5 TMP6 \
1397 TMP7 XMM1 XMM2 XMM3 XMM4 XMMDst
1399 # Multiply TMP6 * HashKey (using Karatsuba)
1401 movdqa \XMM1, \TMP6
1402 pshufd $78, \XMM1, \TMP2
1403 pxor \XMM1, \TMP2
1404 movdqu HashKey_4(%arg2), \TMP5
1405 PCLMULQDQ 0x11, \TMP5, \TMP6 # TMP6 = a1*b1
1406 PCLMULQDQ 0x00, \TMP5, \XMM1 # XMM1 = a0*b0
1407 movdqu HashKey_4_k(%arg2), \TMP4
1408 PCLMULQDQ 0x00, \TMP4, \TMP2 # TMP2 = (a1+a0)*(b1+b0)
1409 movdqa \XMM1, \XMMDst
1410 movdqa \TMP2, \XMM1 # result in TMP6, XMMDst, XMM1
1412 # Multiply TMP1 * HashKey (using Karatsuba)
1414 movdqa \XMM2, \TMP1
1415 pshufd $78, \XMM2, \TMP2
1416 pxor \XMM2, \TMP2
1417 movdqu HashKey_3(%arg2), \TMP5
1418 PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1*b1
1419 PCLMULQDQ 0x00, \TMP5, \XMM2 # XMM2 = a0*b0
1420 movdqu HashKey_3_k(%arg2), \TMP4
1421 PCLMULQDQ 0x00, \TMP4, \TMP2 # TMP2 = (a1+a0)*(b1+b0)
1422 pxor \TMP1, \TMP6
1423 pxor \XMM2, \XMMDst
1424 pxor \TMP2, \XMM1
1425 # results accumulated in TMP6, XMMDst, XMM1
1427 # Multiply TMP1 * HashKey (using Karatsuba)
1429 movdqa \XMM3, \TMP1
1430 pshufd $78, \XMM3, \TMP2
1431 pxor \XMM3, \TMP2
1432 movdqu HashKey_2(%arg2), \TMP5
1433 PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1*b1
1434 PCLMULQDQ 0x00, \TMP5, \XMM3 # XMM3 = a0*b0
1435 movdqu HashKey_2_k(%arg2), \TMP4
1436 PCLMULQDQ 0x00, \TMP4, \TMP2 # TMP2 = (a1+a0)*(b1+b0)
1437 pxor \TMP1, \TMP6
1438 pxor \XMM3, \XMMDst
1439 pxor \TMP2, \XMM1 # results accumulated in TMP6, XMMDst, XMM1
1441 # Multiply TMP1 * HashKey (using Karatsuba)
1442 movdqa \XMM4, \TMP1
1443 pshufd $78, \XMM4, \TMP2
1444 pxor \XMM4, \TMP2
1445 movdqu HashKey(%arg2), \TMP5
1446 PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1*b1
1447 PCLMULQDQ 0x00, \TMP5, \XMM4 # XMM4 = a0*b0
1448 movdqu HashKey_k(%arg2), \TMP4
1449 PCLMULQDQ 0x00, \TMP4, \TMP2 # TMP2 = (a1+a0)*(b1+b0)
1450 pxor \TMP1, \TMP6
1451 pxor \XMM4, \XMMDst
1452 pxor \XMM1, \TMP2
1453 pxor \TMP6, \TMP2
1454 pxor \XMMDst, \TMP2
1455 # middle section of the temp results combined as in karatsuba algorithm
1456 movdqa \TMP2, \TMP4
1457 pslldq $8, \TMP4 # left shift TMP4 2 DWs
1458 psrldq $8, \TMP2 # right shift TMP2 2 DWs
1459 pxor \TMP4, \XMMDst
1460 pxor \TMP2, \TMP6
1461 # TMP6:XMMDst holds the result of the accumulated carry-less multiplications
1462 # first phase of the reduction
1463 movdqa \XMMDst, \TMP2
1464 movdqa \XMMDst, \TMP3
1465 movdqa \XMMDst, \TMP4
1466 # move XMMDst into TMP2, TMP3, TMP4 in order to perform 3 shifts independently
1467 pslld $31, \TMP2 # packed right shifting << 31
1468 pslld $30, \TMP3 # packed right shifting << 30
1469 pslld $25, \TMP4 # packed right shifting << 25
1470 pxor \TMP3, \TMP2 # xor the shifted versions
1471 pxor \TMP4, \TMP2
1472 movdqa \TMP2, \TMP7
1473 psrldq $4, \TMP7 # right shift TMP7 1 DW
1474 pslldq $12, \TMP2 # left shift TMP2 3 DWs
1475 pxor \TMP2, \XMMDst
1477 # second phase of the reduction
1478 movdqa \XMMDst, \TMP2
1479 # make 3 copies of XMMDst for doing 3 shift operations
1480 movdqa \XMMDst, \TMP3
1481 movdqa \XMMDst, \TMP4
1482 psrld $1, \TMP2 # packed left shift >> 1
1483 psrld $2, \TMP3 # packed left shift >> 2
1484 psrld $7, \TMP4 # packed left shift >> 7
1485 pxor \TMP3, \TMP2 # xor the shifted versions
1486 pxor \TMP4, \TMP2
1487 pxor \TMP7, \TMP2
1488 pxor \TMP2, \XMMDst
1489 pxor \TMP6, \XMMDst # reduced result is in XMMDst
1490 .endm
1493 /* Encryption of a single block
1494 * uses eax & r10
1495 */
1497 .macro ENCRYPT_SINGLE_BLOCK XMM0 TMP1
1499 pxor (%arg1), \XMM0
1500 mov keysize,%eax
1501 shr $2,%eax # 128->4, 192->6, 256->8
1502 add $5,%eax # 128->9, 192->11, 256->13
1503 lea 16(%arg1), %r10 # get first expanded key address
1505 _esb_loop_\@:
1506 MOVADQ (%r10),\TMP1
1507 AESENC \TMP1,\XMM0
1508 add $16,%r10
1509 sub $1,%eax
1510 jnz _esb_loop_\@
1512 MOVADQ (%r10),\TMP1
1513 AESENCLAST \TMP1,\XMM0
1514 .endm
1515 /*****************************************************************************
1516 * void aesni_gcm_dec(void *aes_ctx, // AES Key schedule. Starts on a 16 byte boundary.
1517 * struct gcm_context_data *data
1518 * // Context data
1519 * u8 *out, // Plaintext output. Encrypt in-place is allowed.
1520 * const u8 *in, // Ciphertext input
1521 * u64 plaintext_len, // Length of data in bytes for decryption.
1522 * u8 *iv, // Pre-counter block j0: 4 byte salt (from Security Association)
1523 * // concatenated with 8 byte Initialisation Vector (from IPSec ESP Payload)
1524 * // concatenated with 0x00000001. 16-byte aligned pointer.
1525 * u8 *hash_subkey, // H, the Hash sub key input. Data starts on a 16-byte boundary.
1526 * const u8 *aad, // Additional Authentication Data (AAD)
1527 * u64 aad_len, // Length of AAD in bytes. With RFC4106 this is going to be 8 or 12 bytes
1528 * u8 *auth_tag, // Authenticated Tag output. The driver will compare this to the
1529 * // given authentication tag and only return the plaintext if they match.
1530 * u64 auth_tag_len); // Authenticated Tag Length in bytes. Valid values are 16
1531 * // (most likely), 12 or 8.
1532 *
1533 * Assumptions:
1534 *
1535 * keys:
1536 * keys are pre-expanded and aligned to 16 bytes. we are using the first
1537 * set of 11 keys in the data structure void *aes_ctx
1538 *
1539 * iv:
1540 * 0 1 2 3
1541 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
1542 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1543 * | Salt (From the SA) |
1544 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1545 * | Initialization Vector |
1546 * | (This is the sequence number from IPSec header) |
1547 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1548 * | 0x1 |
1549 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1550 *
1551 *
1552 *
1553 * AAD:
1554 * AAD padded to 128 bits with 0
1555 * for example, assume AAD is a u32 vector
1556 *
1557 * if AAD is 8 bytes:
1558 * AAD[3] = {A0, A1};
1559 * padded AAD in xmm register = {A1 A0 0 0}
1560 *
1561 * 0 1 2 3
1562 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
1563 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1564 * | SPI (A1) |
1565 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1566 * | 32-bit Sequence Number (A0) |
1567 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1568 * | 0x0 |
1569 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1570 *
1571 * AAD Format with 32-bit Sequence Number
1572 *
1573 * if AAD is 12 bytes:
1574 * AAD[3] = {A0, A1, A2};
1575 * padded AAD in xmm register = {A2 A1 A0 0}
1576 *
1577 * 0 1 2 3
1578 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
1579 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1580 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
1581 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1582 * | SPI (A2) |
1583 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1584 * | 64-bit Extended Sequence Number {A1,A0} |
1585 * | |
1586 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1587 * | 0x0 |
1588 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1589 *
1590 * AAD Format with 64-bit Extended Sequence Number
1591 *
1592 * poly = x^128 + x^127 + x^126 + x^121 + 1
1593 *
1594 *****************************************************************************/
1595 SYM_FUNC_START(aesni_gcm_dec)
1596 FUNC_SAVE
1598 GCM_INIT %arg6, arg7, arg8, arg9
1599 GCM_ENC_DEC dec
1600 GCM_COMPLETE arg10, arg11
1601 FUNC_RESTORE
1602 ret
1603 SYM_FUNC_END(aesni_gcm_dec)
1606 /*****************************************************************************
1607 * void aesni_gcm_enc(void *aes_ctx, // AES Key schedule. Starts on a 16 byte boundary.
1608 * struct gcm_context_data *data
1609 * // Context data
1610 * u8 *out, // Ciphertext output. Encrypt in-place is allowed.
1611 * const u8 *in, // Plaintext input
1612 * u64 plaintext_len, // Length of data in bytes for encryption.
1613 * u8 *iv, // Pre-counter block j0: 4 byte salt (from Security Association)
1614 * // concatenated with 8 byte Initialisation Vector (from IPSec ESP Payload)
1615 * // concatenated with 0x00000001. 16-byte aligned pointer.
1616 * u8 *hash_subkey, // H, the Hash sub key input. Data starts on a 16-byte boundary.
1617 * const u8 *aad, // Additional Authentication Data (AAD)
1618 * u64 aad_len, // Length of AAD in bytes. With RFC4106 this is going to be 8 or 12 bytes
1619 * u8 *auth_tag, // Authenticated Tag output.
1620 * u64 auth_tag_len); // Authenticated Tag Length in bytes. Valid values are 16 (most likely),
1621 * // 12 or 8.
1622 *
1623 * Assumptions:
1624 *
1625 * keys:
1626 * keys are pre-expanded and aligned to 16 bytes. we are using the
1627 * first set of 11 keys in the data structure void *aes_ctx
1628 *
1629 *
1630 * iv:
1631 * 0 1 2 3
1632 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
1633 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1634 * | Salt (From the SA) |
1635 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1636 * | Initialization Vector |
1637 * | (This is the sequence number from IPSec header) |
1638 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1639 * | 0x1 |
1640 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1641 *
1642 *
1643 *
1644 * AAD:
1645 * AAD padded to 128 bits with 0
1646 * for example, assume AAD is a u32 vector
1647 *
1648 * if AAD is 8 bytes:
1649 * AAD[3] = {A0, A1};
1650 * padded AAD in xmm register = {A1 A0 0 0}
1651 *
1652 * 0 1 2 3
1653 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
1654 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1655 * | SPI (A1) |
1656 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1657 * | 32-bit Sequence Number (A0) |
1658 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1659 * | 0x0 |
1660 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1661 *
1662 * AAD Format with 32-bit Sequence Number
1663 *
1664 * if AAD is 12 bytes:
1665 * AAD[3] = {A0, A1, A2};
1666 * padded AAD in xmm register = {A2 A1 A0 0}
1667 *
1668 * 0 1 2 3
1669 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
1670 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1671 * | SPI (A2) |
1672 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1673 * | 64-bit Extended Sequence Number {A1,A0} |
1674 * | |
1675 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1676 * | 0x0 |
1677 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1678 *
1679 * AAD Format with 64-bit Extended Sequence Number
1680 *
1681 * poly = x^128 + x^127 + x^126 + x^121 + 1
1682 ***************************************************************************/
1683 SYM_FUNC_START(aesni_gcm_enc)
1684 FUNC_SAVE
1686 GCM_INIT %arg6, arg7, arg8, arg9
1687 GCM_ENC_DEC enc
1689 GCM_COMPLETE arg10, arg11
1690 FUNC_RESTORE
1691 ret
1692 SYM_FUNC_END(aesni_gcm_enc)
1694 /*****************************************************************************
1695 * void aesni_gcm_init(void *aes_ctx, // AES Key schedule. Starts on a 16 byte boundary.
1696 * struct gcm_context_data *data,
1697 * // context data
1698 * u8 *iv, // Pre-counter block j0: 4 byte salt (from Security Association)
1699 * // concatenated with 8 byte Initialisation Vector (from IPSec ESP Payload)
1700 * // concatenated with 0x00000001. 16-byte aligned pointer.
1701 * u8 *hash_subkey, // H, the Hash sub key input. Data starts on a 16-byte boundary.
1702 * const u8 *aad, // Additional Authentication Data (AAD)
1703 * u64 aad_len) // Length of AAD in bytes.
1704 */
1705 SYM_FUNC_START(aesni_gcm_init)
1706 FUNC_SAVE
1707 GCM_INIT %arg3, %arg4,%arg5, %arg6
1708 FUNC_RESTORE
1709 ret
1710 SYM_FUNC_END(aesni_gcm_init)
1712 /*****************************************************************************
1713 * void aesni_gcm_enc_update(void *aes_ctx, // AES Key schedule. Starts on a 16 byte boundary.
1714 * struct gcm_context_data *data,
1715 * // context data
1716 * u8 *out, // Ciphertext output. Encrypt in-place is allowed.
1717 * const u8 *in, // Plaintext input
1718 * u64 plaintext_len, // Length of data in bytes for encryption.
1719 */
1720 SYM_FUNC_START(aesni_gcm_enc_update)
1721 FUNC_SAVE
1722 GCM_ENC_DEC enc
1723 FUNC_RESTORE
1724 ret
1725 SYM_FUNC_END(aesni_gcm_enc_update)
1727 /*****************************************************************************
1728 * void aesni_gcm_dec_update(void *aes_ctx, // AES Key schedule. Starts on a 16 byte boundary.
1729 * struct gcm_context_data *data,
1730 * // context data
1731 * u8 *out, // Ciphertext output. Encrypt in-place is allowed.
1732 * const u8 *in, // Plaintext input
1733 * u64 plaintext_len, // Length of data in bytes for encryption.
1734 */
1735 SYM_FUNC_START(aesni_gcm_dec_update)
1736 FUNC_SAVE
1737 GCM_ENC_DEC dec
1738 FUNC_RESTORE
1739 ret
1740 SYM_FUNC_END(aesni_gcm_dec_update)
1742 /*****************************************************************************
1743 * void aesni_gcm_finalize(void *aes_ctx, // AES Key schedule. Starts on a 16 byte boundary.
1744 * struct gcm_context_data *data,
1745 * // context data
1746 * u8 *auth_tag, // Authenticated Tag output.
1747 * u64 auth_tag_len); // Authenticated Tag Length in bytes. Valid values are 16 (most likely),
1748 * // 12 or 8.
1749 */
1750 SYM_FUNC_START(aesni_gcm_finalize)
1751 FUNC_SAVE
1752 GCM_COMPLETE %arg3 %arg4
1753 FUNC_RESTORE
1754 ret
1755 SYM_FUNC_END(aesni_gcm_finalize)
1757 #endif
1760 SYM_FUNC_START_LOCAL_ALIAS(_key_expansion_128)
1761 SYM_FUNC_START_LOCAL(_key_expansion_256a)
1762 pshufd $0b11111111, %xmm1, %xmm1
1763 shufps $0b00010000, %xmm0, %xmm4
1764 pxor %xmm4, %xmm0
1765 shufps $0b10001100, %xmm0, %xmm4
1766 pxor %xmm4, %xmm0
1767 pxor %xmm1, %xmm0
1768 movaps %xmm0, (TKEYP)
1769 add $0x10, TKEYP
1770 ret
1771 SYM_FUNC_END(_key_expansion_256a)
1772 SYM_FUNC_END_ALIAS(_key_expansion_128)
1774 SYM_FUNC_START_LOCAL(_key_expansion_192a)
1775 pshufd $0b01010101, %xmm1, %xmm1
1776 shufps $0b00010000, %xmm0, %xmm4
1777 pxor %xmm4, %xmm0
1778 shufps $0b10001100, %xmm0, %xmm4
1779 pxor %xmm4, %xmm0
1780 pxor %xmm1, %xmm0
1782 movaps %xmm2, %xmm5
1783 movaps %xmm2, %xmm6
1784 pslldq $4, %xmm5
1785 pshufd $0b11111111, %xmm0, %xmm3
1786 pxor %xmm3, %xmm2
1787 pxor %xmm5, %xmm2
1789 movaps %xmm0, %xmm1
1790 shufps $0b01000100, %xmm0, %xmm6
1791 movaps %xmm6, (TKEYP)
1792 shufps $0b01001110, %xmm2, %xmm1
1793 movaps %xmm1, 0x10(TKEYP)
1794 add $0x20, TKEYP
1795 ret
1796 SYM_FUNC_END(_key_expansion_192a)
1798 SYM_FUNC_START_LOCAL(_key_expansion_192b)
1799 pshufd $0b01010101, %xmm1, %xmm1
1800 shufps $0b00010000, %xmm0, %xmm4
1801 pxor %xmm4, %xmm0
1802 shufps $0b10001100, %xmm0, %xmm4
1803 pxor %xmm4, %xmm0
1804 pxor %xmm1, %xmm0
1806 movaps %xmm2, %xmm5
1807 pslldq $4, %xmm5
1808 pshufd $0b11111111, %xmm0, %xmm3
1809 pxor %xmm3, %xmm2
1810 pxor %xmm5, %xmm2
1812 movaps %xmm0, (TKEYP)
1813 add $0x10, TKEYP
1814 ret
1815 SYM_FUNC_END(_key_expansion_192b)
1817 SYM_FUNC_START_LOCAL(_key_expansion_256b)
1818 pshufd $0b10101010, %xmm1, %xmm1
1819 shufps $0b00010000, %xmm2, %xmm4
1820 pxor %xmm4, %xmm2
1821 shufps $0b10001100, %xmm2, %xmm4
1822 pxor %xmm4, %xmm2
1823 pxor %xmm1, %xmm2
1824 movaps %xmm2, (TKEYP)
1825 add $0x10, TKEYP
1826 ret
1827 SYM_FUNC_END(_key_expansion_256b)
1829 /*
1830 * int aesni_set_key(struct crypto_aes_ctx *ctx, const u8 *in_key,
1831 * unsigned int key_len)
1832 */
1833 SYM_FUNC_START(aesni_set_key)
1834 FRAME_BEGIN
1835 #ifndef __x86_64__
1836 pushl KEYP
1837 movl (FRAME_OFFSET+8)(%esp), KEYP # ctx
1838 movl (FRAME_OFFSET+12)(%esp), UKEYP # in_key
1839 movl (FRAME_OFFSET+16)(%esp), %edx # key_len
1840 #endif
1841 movups (UKEYP), %xmm0 # user key (first 16 bytes)
1842 movaps %xmm0, (KEYP)
1843 lea 0x10(KEYP), TKEYP # key addr
1844 movl %edx, 480(KEYP)
1845 pxor %xmm4, %xmm4 # xmm4 is assumed 0 in _key_expansion_x
1846 cmp $24, %dl
1847 jb .Lenc_key128
1848 je .Lenc_key192
1849 movups 0x10(UKEYP), %xmm2 # other user key
1850 movaps %xmm2, (TKEYP)
1851 add $0x10, TKEYP
1852 AESKEYGENASSIST 0x1 %xmm2 %xmm1 # round 1
1853 call _key_expansion_256a
1854 AESKEYGENASSIST 0x1 %xmm0 %xmm1
1855 call _key_expansion_256b
1856 AESKEYGENASSIST 0x2 %xmm2 %xmm1 # round 2
1857 call _key_expansion_256a
1858 AESKEYGENASSIST 0x2 %xmm0 %xmm1
1859 call _key_expansion_256b
1860 AESKEYGENASSIST 0x4 %xmm2 %xmm1 # round 3
1861 call _key_expansion_256a
1862 AESKEYGENASSIST 0x4 %xmm0 %xmm1
1863 call _key_expansion_256b
1864 AESKEYGENASSIST 0x8 %xmm2 %xmm1 # round 4
1865 call _key_expansion_256a
1866 AESKEYGENASSIST 0x8 %xmm0 %xmm1
1867 call _key_expansion_256b
1868 AESKEYGENASSIST 0x10 %xmm2 %xmm1 # round 5
1869 call _key_expansion_256a
1870 AESKEYGENASSIST 0x10 %xmm0 %xmm1
1871 call _key_expansion_256b
1872 AESKEYGENASSIST 0x20 %xmm2 %xmm1 # round 6
1873 call _key_expansion_256a
1874 AESKEYGENASSIST 0x20 %xmm0 %xmm1
1875 call _key_expansion_256b
1876 AESKEYGENASSIST 0x40 %xmm2 %xmm1 # round 7
1877 call _key_expansion_256a
1878 jmp .Ldec_key
1879 .Lenc_key192:
1880 movq 0x10(UKEYP), %xmm2 # other user key
1881 AESKEYGENASSIST 0x1 %xmm2 %xmm1 # round 1
1882 call _key_expansion_192a
1883 AESKEYGENASSIST 0x2 %xmm2 %xmm1 # round 2
1884 call _key_expansion_192b
1885 AESKEYGENASSIST 0x4 %xmm2 %xmm1 # round 3
1886 call _key_expansion_192a
1887 AESKEYGENASSIST 0x8 %xmm2 %xmm1 # round 4
1888 call _key_expansion_192b
1889 AESKEYGENASSIST 0x10 %xmm2 %xmm1 # round 5
1890 call _key_expansion_192a
1891 AESKEYGENASSIST 0x20 %xmm2 %xmm1 # round 6
1892 call _key_expansion_192b
1893 AESKEYGENASSIST 0x40 %xmm2 %xmm1 # round 7
1894 call _key_expansion_192a
1895 AESKEYGENASSIST 0x80 %xmm2 %xmm1 # round 8
1896 call _key_expansion_192b
1897 jmp .Ldec_key
1898 .Lenc_key128:
1899 AESKEYGENASSIST 0x1 %xmm0 %xmm1 # round 1
1900 call _key_expansion_128
1901 AESKEYGENASSIST 0x2 %xmm0 %xmm1 # round 2
1902 call _key_expansion_128
1903 AESKEYGENASSIST 0x4 %xmm0 %xmm1 # round 3
1904 call _key_expansion_128
1905 AESKEYGENASSIST 0x8 %xmm0 %xmm1 # round 4
1906 call _key_expansion_128
1907 AESKEYGENASSIST 0x10 %xmm0 %xmm1 # round 5
1908 call _key_expansion_128
1909 AESKEYGENASSIST 0x20 %xmm0 %xmm1 # round 6
1910 call _key_expansion_128
1911 AESKEYGENASSIST 0x40 %xmm0 %xmm1 # round 7
1912 call _key_expansion_128
1913 AESKEYGENASSIST 0x80 %xmm0 %xmm1 # round 8
1914 call _key_expansion_128
1915 AESKEYGENASSIST 0x1b %xmm0 %xmm1 # round 9
1916 call _key_expansion_128
1917 AESKEYGENASSIST 0x36 %xmm0 %xmm1 # round 10
1918 call _key_expansion_128
1919 .Ldec_key:
1920 sub $0x10, TKEYP
1921 movaps (KEYP), %xmm0
1922 movaps (TKEYP), %xmm1
1923 movaps %xmm0, 240(TKEYP)
1924 movaps %xmm1, 240(KEYP)
1925 add $0x10, KEYP
1926 lea 240-16(TKEYP), UKEYP
1927 .align 4
1928 .Ldec_key_loop:
1929 movaps (KEYP), %xmm0
1930 AESIMC %xmm0 %xmm1
1931 movaps %xmm1, (UKEYP)
1932 add $0x10, KEYP
1933 sub $0x10, UKEYP
1934 cmp TKEYP, KEYP
1935 jb .Ldec_key_loop
1936 xor AREG, AREG
1937 #ifndef __x86_64__
1938 popl KEYP
1939 #endif
1940 FRAME_END
1941 ret
1942 SYM_FUNC_END(aesni_set_key)
1944 /*
1945 * void aesni_enc(const void *ctx, u8 *dst, const u8 *src)
1946 */
1947 SYM_FUNC_START(aesni_enc)
1948 FRAME_BEGIN
1949 #ifndef __x86_64__
1950 pushl KEYP
1951 pushl KLEN
1952 movl (FRAME_OFFSET+12)(%esp), KEYP # ctx
1953 movl (FRAME_OFFSET+16)(%esp), OUTP # dst
1954 movl (FRAME_OFFSET+20)(%esp), INP # src
1955 #endif
1956 movl 480(KEYP), KLEN # key length
1957 movups (INP), STATE # input
1958 call _aesni_enc1
1959 movups STATE, (OUTP) # output
1960 #ifndef __x86_64__
1961 popl KLEN
1962 popl KEYP
1963 #endif
1964 FRAME_END
1965 ret
1966 SYM_FUNC_END(aesni_enc)
1968 /*
1969 * _aesni_enc1: internal ABI
1970 * input:
1971 * KEYP: key struct pointer
1972 * KLEN: round count
1973 * STATE: initial state (input)
1974 * output:
1975 * STATE: finial state (output)
1976 * changed:
1977 * KEY
1978 * TKEYP (T1)
1979 */
1980 SYM_FUNC_START_LOCAL(_aesni_enc1)
1981 movaps (KEYP), KEY # key
1982 mov KEYP, TKEYP
1983 pxor KEY, STATE # round 0
1984 add $0x30, TKEYP
1985 cmp $24, KLEN
1986 jb .Lenc128
1987 lea 0x20(TKEYP), TKEYP
1988 je .Lenc192
1989 add $0x20, TKEYP
1990 movaps -0x60(TKEYP), KEY
1991 AESENC KEY STATE
1992 movaps -0x50(TKEYP), KEY
1993 AESENC KEY STATE
1994 .align 4
1995 .Lenc192:
1996 movaps -0x40(TKEYP), KEY
1997 AESENC KEY STATE
1998 movaps -0x30(TKEYP), KEY
1999 AESENC KEY STATE
2000 .align 4
2001 .Lenc128:
2002 movaps -0x20(TKEYP), KEY
2003 AESENC KEY STATE
2004 movaps -0x10(TKEYP), KEY
2005 AESENC KEY STATE
2006 movaps (TKEYP), KEY
2007 AESENC KEY STATE
2008 movaps 0x10(TKEYP), KEY
2009 AESENC KEY STATE
2010 movaps 0x20(TKEYP), KEY
2011 AESENC KEY STATE
2012 movaps 0x30(TKEYP), KEY
2013 AESENC KEY STATE
2014 movaps 0x40(TKEYP), KEY
2015 AESENC KEY STATE
2016 movaps 0x50(TKEYP), KEY
2017 AESENC KEY STATE
2018 movaps 0x60(TKEYP), KEY
2019 AESENC KEY STATE
2020 movaps 0x70(TKEYP), KEY
2021 AESENCLAST KEY STATE
2022 ret
2023 SYM_FUNC_END(_aesni_enc1)
2025 /*
2026 * _aesni_enc4: internal ABI
2027 * input:
2028 * KEYP: key struct pointer
2029 * KLEN: round count
2030 * STATE1: initial state (input)
2031 * STATE2
2032 * STATE3
2033 * STATE4
2034 * output:
2035 * STATE1: finial state (output)
2036 * STATE2
2037 * STATE3
2038 * STATE4
2039 * changed:
2040 * KEY
2041 * TKEYP (T1)
2042 */
2043 SYM_FUNC_START_LOCAL(_aesni_enc4)
2044 movaps (KEYP), KEY # key
2045 mov KEYP, TKEYP
2046 pxor KEY, STATE1 # round 0
2047 pxor KEY, STATE2
2048 pxor KEY, STATE3
2049 pxor KEY, STATE4
2050 add $0x30, TKEYP
2051 cmp $24, KLEN
2052 jb .L4enc128
2053 lea 0x20(TKEYP), TKEYP
2054 je .L4enc192
2055 add $0x20, TKEYP
2056 movaps -0x60(TKEYP), KEY
2057 AESENC KEY STATE1
2058 AESENC KEY STATE2
2059 AESENC KEY STATE3
2060 AESENC KEY STATE4
2061 movaps -0x50(TKEYP), KEY
2062 AESENC KEY STATE1
2063 AESENC KEY STATE2
2064 AESENC KEY STATE3
2065 AESENC KEY STATE4
2066 #.align 4
2067 .L4enc192:
2068 movaps -0x40(TKEYP), KEY
2069 AESENC KEY STATE1
2070 AESENC KEY STATE2
2071 AESENC KEY STATE3
2072 AESENC KEY STATE4
2073 movaps -0x30(TKEYP), KEY
2074 AESENC KEY STATE1
2075 AESENC KEY STATE2
2076 AESENC KEY STATE3
2077 AESENC KEY STATE4
2078 #.align 4
2079 .L4enc128:
2080 movaps -0x20(TKEYP), KEY
2081 AESENC KEY STATE1
2082 AESENC KEY STATE2
2083 AESENC KEY STATE3
2084 AESENC KEY STATE4
2085 movaps -0x10(TKEYP), KEY
2086 AESENC KEY STATE1
2087 AESENC KEY STATE2
2088 AESENC KEY STATE3
2089 AESENC KEY STATE4
2090 movaps (TKEYP), KEY
2091 AESENC KEY STATE1
2092 AESENC KEY STATE2
2093 AESENC KEY STATE3
2094 AESENC KEY STATE4
2095 movaps 0x10(TKEYP), KEY
2096 AESENC KEY STATE1
2097 AESENC KEY STATE2
2098 AESENC KEY STATE3
2099 AESENC KEY STATE4
2100 movaps 0x20(TKEYP), KEY
2101 AESENC KEY STATE1
2102 AESENC KEY STATE2
2103 AESENC KEY STATE3
2104 AESENC KEY STATE4
2105 movaps 0x30(TKEYP), KEY
2106 AESENC KEY STATE1
2107 AESENC KEY STATE2
2108 AESENC KEY STATE3
2109 AESENC KEY STATE4
2110 movaps 0x40(TKEYP), KEY
2111 AESENC KEY STATE1
2112 AESENC KEY STATE2
2113 AESENC KEY STATE3
2114 AESENC KEY STATE4
2115 movaps 0x50(TKEYP), KEY
2116 AESENC KEY STATE1
2117 AESENC KEY STATE2
2118 AESENC KEY STATE3
2119 AESENC KEY STATE4
2120 movaps 0x60(TKEYP), KEY
2121 AESENC KEY STATE1
2122 AESENC KEY STATE2
2123 AESENC KEY STATE3
2124 AESENC KEY STATE4
2125 movaps 0x70(TKEYP), KEY
2126 AESENCLAST KEY STATE1 # last round
2127 AESENCLAST KEY STATE2
2128 AESENCLAST KEY STATE3
2129 AESENCLAST KEY STATE4
2130 ret
2131 SYM_FUNC_END(_aesni_enc4)
2133 /*
2134 * void aesni_dec (const void *ctx, u8 *dst, const u8 *src)
2135 */
2136 SYM_FUNC_START(aesni_dec)
2137 FRAME_BEGIN
2138 #ifndef __x86_64__
2139 pushl KEYP
2140 pushl KLEN
2141 movl (FRAME_OFFSET+12)(%esp), KEYP # ctx
2142 movl (FRAME_OFFSET+16)(%esp), OUTP # dst
2143 movl (FRAME_OFFSET+20)(%esp), INP # src
2144 #endif
2145 mov 480(KEYP), KLEN # key length
2146 add $240, KEYP
2147 movups (INP), STATE # input
2148 call _aesni_dec1
2149 movups STATE, (OUTP) #output
2150 #ifndef __x86_64__
2151 popl KLEN
2152 popl KEYP
2153 #endif
2154 FRAME_END
2155 ret
2156 SYM_FUNC_END(aesni_dec)
2158 /*
2159 * _aesni_dec1: internal ABI
2160 * input:
2161 * KEYP: key struct pointer
2162 * KLEN: key length
2163 * STATE: initial state (input)
2164 * output:
2165 * STATE: finial state (output)
2166 * changed:
2167 * KEY
2168 * TKEYP (T1)
2169 */
2170 SYM_FUNC_START_LOCAL(_aesni_dec1)
2171 movaps (KEYP), KEY # key
2172 mov KEYP, TKEYP
2173 pxor KEY, STATE # round 0
2174 add $0x30, TKEYP
2175 cmp $24, KLEN
2176 jb .Ldec128
2177 lea 0x20(TKEYP), TKEYP
2178 je .Ldec192
2179 add $0x20, TKEYP
2180 movaps -0x60(TKEYP), KEY
2181 AESDEC KEY STATE
2182 movaps -0x50(TKEYP), KEY
2183 AESDEC KEY STATE
2184 .align 4
2185 .Ldec192:
2186 movaps -0x40(TKEYP), KEY
2187 AESDEC KEY STATE
2188 movaps -0x30(TKEYP), KEY
2189 AESDEC KEY STATE
2190 .align 4
2191 .Ldec128:
2192 movaps -0x20(TKEYP), KEY
2193 AESDEC KEY STATE
2194 movaps -0x10(TKEYP), KEY
2195 AESDEC KEY STATE
2196 movaps (TKEYP), KEY
2197 AESDEC KEY STATE
2198 movaps 0x10(TKEYP), KEY
2199 AESDEC KEY STATE
2200 movaps 0x20(TKEYP), KEY
2201 AESDEC KEY STATE
2202 movaps 0x30(TKEYP), KEY
2203 AESDEC KEY STATE
2204 movaps 0x40(TKEYP), KEY
2205 AESDEC KEY STATE
2206 movaps 0x50(TKEYP), KEY
2207 AESDEC KEY STATE
2208 movaps 0x60(TKEYP), KEY
2209 AESDEC KEY STATE
2210 movaps 0x70(TKEYP), KEY
2211 AESDECLAST KEY STATE
2212 ret
2213 SYM_FUNC_END(_aesni_dec1)
2215 /*
2216 * _aesni_dec4: internal ABI
2217 * input:
2218 * KEYP: key struct pointer
2219 * KLEN: key length
2220 * STATE1: initial state (input)
2221 * STATE2
2222 * STATE3
2223 * STATE4
2224 * output:
2225 * STATE1: finial state (output)
2226 * STATE2
2227 * STATE3
2228 * STATE4
2229 * changed:
2230 * KEY
2231 * TKEYP (T1)
2232 */
2233 SYM_FUNC_START_LOCAL(_aesni_dec4)
2234 movaps (KEYP), KEY # key
2235 mov KEYP, TKEYP
2236 pxor KEY, STATE1 # round 0
2237 pxor KEY, STATE2
2238 pxor KEY, STATE3
2239 pxor KEY, STATE4
2240 add $0x30, TKEYP
2241 cmp $24, KLEN
2242 jb .L4dec128
2243 lea 0x20(TKEYP), TKEYP
2244 je .L4dec192
2245 add $0x20, TKEYP
2246 movaps -0x60(TKEYP), KEY
2247 AESDEC KEY STATE1
2248 AESDEC KEY STATE2
2249 AESDEC KEY STATE3
2250 AESDEC KEY STATE4
2251 movaps -0x50(TKEYP), KEY
2252 AESDEC KEY STATE1
2253 AESDEC KEY STATE2
2254 AESDEC KEY STATE3
2255 AESDEC KEY STATE4
2256 .align 4
2257 .L4dec192:
2258 movaps -0x40(TKEYP), KEY
2259 AESDEC KEY STATE1
2260 AESDEC KEY STATE2
2261 AESDEC KEY STATE3
2262 AESDEC KEY STATE4
2263 movaps -0x30(TKEYP), KEY
2264 AESDEC KEY STATE1
2265 AESDEC KEY STATE2
2266 AESDEC KEY STATE3
2267 AESDEC KEY STATE4
2268 .align 4
2269 .L4dec128:
2270 movaps -0x20(TKEYP), KEY
2271 AESDEC KEY STATE1
2272 AESDEC KEY STATE2
2273 AESDEC KEY STATE3
2274 AESDEC KEY STATE4
2275 movaps -0x10(TKEYP), KEY
2276 AESDEC KEY STATE1
2277 AESDEC KEY STATE2
2278 AESDEC KEY STATE3
2279 AESDEC KEY STATE4
2280 movaps (TKEYP), KEY
2281 AESDEC KEY STATE1
2282 AESDEC KEY STATE2
2283 AESDEC KEY STATE3
2284 AESDEC KEY STATE4
2285 movaps 0x10(TKEYP), KEY
2286 AESDEC KEY STATE1
2287 AESDEC KEY STATE2
2288 AESDEC KEY STATE3
2289 AESDEC KEY STATE4
2290 movaps 0x20(TKEYP), KEY
2291 AESDEC KEY STATE1
2292 AESDEC KEY STATE2
2293 AESDEC KEY STATE3
2294 AESDEC KEY STATE4
2295 movaps 0x30(TKEYP), KEY
2296 AESDEC KEY STATE1
2297 AESDEC KEY STATE2
2298 AESDEC KEY STATE3
2299 AESDEC KEY STATE4
2300 movaps 0x40(TKEYP), KEY
2301 AESDEC KEY STATE1
2302 AESDEC KEY STATE2
2303 AESDEC KEY STATE3
2304 AESDEC KEY STATE4
2305 movaps 0x50(TKEYP), KEY
2306 AESDEC KEY STATE1
2307 AESDEC KEY STATE2
2308 AESDEC KEY STATE3
2309 AESDEC KEY STATE4
2310 movaps 0x60(TKEYP), KEY
2311 AESDEC KEY STATE1
2312 AESDEC KEY STATE2
2313 AESDEC KEY STATE3
2314 AESDEC KEY STATE4
2315 movaps 0x70(TKEYP), KEY
2316 AESDECLAST KEY STATE1 # last round
2317 AESDECLAST KEY STATE2
2318 AESDECLAST KEY STATE3
2319 AESDECLAST KEY STATE4
2320 ret
2321 SYM_FUNC_END(_aesni_dec4)
2323 /*
2324 * void aesni_ecb_enc(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src,
2325 * size_t len)
2326 */
2327 SYM_FUNC_START(aesni_ecb_enc)
2328 FRAME_BEGIN
2329 #ifndef __x86_64__
2330 pushl LEN
2331 pushl KEYP
2332 pushl KLEN
2333 movl (FRAME_OFFSET+16)(%esp), KEYP # ctx
2334 movl (FRAME_OFFSET+20)(%esp), OUTP # dst
2335 movl (FRAME_OFFSET+24)(%esp), INP # src
2336 movl (FRAME_OFFSET+28)(%esp), LEN # len
2337 #endif
2338 test LEN, LEN # check length
2339 jz .Lecb_enc_ret
2340 mov 480(KEYP), KLEN
2341 cmp $16, LEN
2342 jb .Lecb_enc_ret
2343 cmp $64, LEN
2344 jb .Lecb_enc_loop1
2345 .align 4
2346 .Lecb_enc_loop4:
2347 movups (INP), STATE1
2348 movups 0x10(INP), STATE2
2349 movups 0x20(INP), STATE3
2350 movups 0x30(INP), STATE4
2351 call _aesni_enc4
2352 movups STATE1, (OUTP)
2353 movups STATE2, 0x10(OUTP)
2354 movups STATE3, 0x20(OUTP)
2355 movups STATE4, 0x30(OUTP)
2356 sub $64, LEN
2357 add $64, INP
2358 add $64, OUTP
2359 cmp $64, LEN
2360 jge .Lecb_enc_loop4
2361 cmp $16, LEN
2362 jb .Lecb_enc_ret
2363 .align 4
2364 .Lecb_enc_loop1:
2365 movups (INP), STATE1
2366 call _aesni_enc1
2367 movups STATE1, (OUTP)
2368 sub $16, LEN
2369 add $16, INP
2370 add $16, OUTP
2371 cmp $16, LEN
2372 jge .Lecb_enc_loop1
2373 .Lecb_enc_ret:
2374 #ifndef __x86_64__
2375 popl KLEN
2376 popl KEYP
2377 popl LEN
2378 #endif
2379 FRAME_END
2380 ret
2381 SYM_FUNC_END(aesni_ecb_enc)
2383 /*
2384 * void aesni_ecb_dec(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src,
2385 * size_t len);
2386 */
2387 SYM_FUNC_START(aesni_ecb_dec)
2388 FRAME_BEGIN
2389 #ifndef __x86_64__
2390 pushl LEN
2391 pushl KEYP
2392 pushl KLEN
2393 movl (FRAME_OFFSET+16)(%esp), KEYP # ctx
2394 movl (FRAME_OFFSET+20)(%esp), OUTP # dst
2395 movl (FRAME_OFFSET+24)(%esp), INP # src
2396 movl (FRAME_OFFSET+28)(%esp), LEN # len
2397 #endif
2398 test LEN, LEN
2399 jz .Lecb_dec_ret
2400 mov 480(KEYP), KLEN
2401 add $240, KEYP
2402 cmp $16, LEN
2403 jb .Lecb_dec_ret
2404 cmp $64, LEN
2405 jb .Lecb_dec_loop1
2406 .align 4
2407 .Lecb_dec_loop4:
2408 movups (INP), STATE1
2409 movups 0x10(INP), STATE2
2410 movups 0x20(INP), STATE3
2411 movups 0x30(INP), STATE4
2412 call _aesni_dec4
2413 movups STATE1, (OUTP)
2414 movups STATE2, 0x10(OUTP)
2415 movups STATE3, 0x20(OUTP)
2416 movups STATE4, 0x30(OUTP)
2417 sub $64, LEN
2418 add $64, INP
2419 add $64, OUTP
2420 cmp $64, LEN
2421 jge .Lecb_dec_loop4
2422 cmp $16, LEN
2423 jb .Lecb_dec_ret
2424 .align 4
2425 .Lecb_dec_loop1:
2426 movups (INP), STATE1
2427 call _aesni_dec1
2428 movups STATE1, (OUTP)
2429 sub $16, LEN
2430 add $16, INP
2431 add $16, OUTP
2432 cmp $16, LEN
2433 jge .Lecb_dec_loop1
2434 .Lecb_dec_ret:
2435 #ifndef __x86_64__
2436 popl KLEN
2437 popl KEYP
2438 popl LEN
2439 #endif
2440 FRAME_END
2441 ret
2442 SYM_FUNC_END(aesni_ecb_dec)
2444 /*
2445 * void aesni_cbc_enc(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src,
2446 * size_t len, u8 *iv)
2447 */
2448 SYM_FUNC_START(aesni_cbc_enc)
2449 FRAME_BEGIN
2450 #ifndef __x86_64__
2451 pushl IVP
2452 pushl LEN
2453 pushl KEYP
2454 pushl KLEN
2455 movl (FRAME_OFFSET+20)(%esp), KEYP # ctx
2456 movl (FRAME_OFFSET+24)(%esp), OUTP # dst
2457 movl (FRAME_OFFSET+28)(%esp), INP # src
2458 movl (FRAME_OFFSET+32)(%esp), LEN # len
2459 movl (FRAME_OFFSET+36)(%esp), IVP # iv
2460 #endif
2461 cmp $16, LEN
2462 jb .Lcbc_enc_ret
2463 mov 480(KEYP), KLEN
2464 movups (IVP), STATE # load iv as initial state
2465 .align 4
2466 .Lcbc_enc_loop:
2467 movups (INP), IN # load input
2468 pxor IN, STATE
2469 call _aesni_enc1
2470 movups STATE, (OUTP) # store output
2471 sub $16, LEN
2472 add $16, INP
2473 add $16, OUTP
2474 cmp $16, LEN
2475 jge .Lcbc_enc_loop
2476 movups STATE, (IVP)
2477 .Lcbc_enc_ret:
2478 #ifndef __x86_64__
2479 popl KLEN
2480 popl KEYP
2481 popl LEN
2482 popl IVP
2483 #endif
2484 FRAME_END
2485 ret
2486 SYM_FUNC_END(aesni_cbc_enc)
2488 /*
2489 * void aesni_cbc_dec(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src,
2490 * size_t len, u8 *iv)
2491 */
2492 SYM_FUNC_START(aesni_cbc_dec)
2493 FRAME_BEGIN
2494 #ifndef __x86_64__
2495 pushl IVP
2496 pushl LEN
2497 pushl KEYP
2498 pushl KLEN
2499 movl (FRAME_OFFSET+20)(%esp), KEYP # ctx
2500 movl (FRAME_OFFSET+24)(%esp), OUTP # dst
2501 movl (FRAME_OFFSET+28)(%esp), INP # src
2502 movl (FRAME_OFFSET+32)(%esp), LEN # len
2503 movl (FRAME_OFFSET+36)(%esp), IVP # iv
2504 #endif
2505 cmp $16, LEN
2506 jb .Lcbc_dec_just_ret
2507 mov 480(KEYP), KLEN
2508 add $240, KEYP
2509 movups (IVP), IV
2510 cmp $64, LEN
2511 jb .Lcbc_dec_loop1
2512 .align 4
2513 .Lcbc_dec_loop4:
2514 movups (INP), IN1
2515 movaps IN1, STATE1
2516 movups 0x10(INP), IN2
2517 movaps IN2, STATE2
2518 #ifdef __x86_64__
2519 movups 0x20(INP), IN3
2520 movaps IN3, STATE3
2521 movups 0x30(INP), IN4
2522 movaps IN4, STATE4
2523 #else
2524 movups 0x20(INP), IN1
2525 movaps IN1, STATE3
2526 movups 0x30(INP), IN2
2527 movaps IN2, STATE4
2528 #endif
2529 call _aesni_dec4
2530 pxor IV, STATE1
2531 #ifdef __x86_64__
2532 pxor IN1, STATE2
2533 pxor IN2, STATE3
2534 pxor IN3, STATE4
2535 movaps IN4, IV
2536 #else
2537 pxor IN1, STATE4
2538 movaps IN2, IV
2539 movups (INP), IN1
2540 pxor IN1, STATE2
2541 movups 0x10(INP), IN2
2542 pxor IN2, STATE3
2543 #endif
2544 movups STATE1, (OUTP)
2545 movups STATE2, 0x10(OUTP)
2546 movups STATE3, 0x20(OUTP)
2547 movups STATE4, 0x30(OUTP)
2548 sub $64, LEN
2549 add $64, INP
2550 add $64, OUTP
2551 cmp $64, LEN
2552 jge .Lcbc_dec_loop4
2553 cmp $16, LEN
2554 jb .Lcbc_dec_ret
2555 .align 4
2556 .Lcbc_dec_loop1:
2557 movups (INP), IN
2558 movaps IN, STATE
2559 call _aesni_dec1
2560 pxor IV, STATE
2561 movups STATE, (OUTP)
2562 movaps IN, IV
2563 sub $16, LEN
2564 add $16, INP
2565 add $16, OUTP
2566 cmp $16, LEN
2567 jge .Lcbc_dec_loop1
2568 .Lcbc_dec_ret:
2569 movups IV, (IVP)
2570 .Lcbc_dec_just_ret:
2571 #ifndef __x86_64__
2572 popl KLEN
2573 popl KEYP
2574 popl LEN
2575 popl IVP
2576 #endif
2577 FRAME_END
2578 ret
2579 SYM_FUNC_END(aesni_cbc_dec)
2581 #ifdef __x86_64__
2582 .pushsection .rodata
2583 .align 16
2584 .Lbswap_mask:
2585 .byte 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0
2586 .popsection
2588 /*
2589 * _aesni_inc_init: internal ABI
2590 * setup registers used by _aesni_inc
2591 * input:
2592 * IV
2593 * output:
2594 * CTR: == IV, in little endian
2595 * TCTR_LOW: == lower qword of CTR
2596 * INC: == 1, in little endian
2597 * BSWAP_MASK == endian swapping mask
2598 */
2599 SYM_FUNC_START_LOCAL(_aesni_inc_init)
2600 movaps .Lbswap_mask, BSWAP_MASK
2601 movaps IV, CTR
2602 PSHUFB_XMM BSWAP_MASK CTR
2603 mov $1, TCTR_LOW
2604 MOVQ_R64_XMM TCTR_LOW INC
2605 MOVQ_R64_XMM CTR TCTR_LOW
2606 ret
2607 SYM_FUNC_END(_aesni_inc_init)
2609 /*
2610 * _aesni_inc: internal ABI
2611 * Increase IV by 1, IV is in big endian
2612 * input:
2613 * IV
2614 * CTR: == IV, in little endian
2615 * TCTR_LOW: == lower qword of CTR
2616 * INC: == 1, in little endian
2617 * BSWAP_MASK == endian swapping mask
2618 * output:
2619 * IV: Increase by 1
2620 * changed:
2621 * CTR: == output IV, in little endian
2622 * TCTR_LOW: == lower qword of CTR
2623 */
2624 SYM_FUNC_START_LOCAL(_aesni_inc)
2625 paddq INC, CTR
2626 add $1, TCTR_LOW
2627 jnc .Linc_low
2628 pslldq $8, INC
2629 paddq INC, CTR
2630 psrldq $8, INC
2631 .Linc_low:
2632 movaps CTR, IV
2633 PSHUFB_XMM BSWAP_MASK IV
2634 ret
2635 SYM_FUNC_END(_aesni_inc)
2637 /*
2638 * void aesni_ctr_enc(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src,
2639 * size_t len, u8 *iv)
2640 */
2641 SYM_FUNC_START(aesni_ctr_enc)
2642 FRAME_BEGIN
2643 cmp $16, LEN
2644 jb .Lctr_enc_just_ret
2645 mov 480(KEYP), KLEN
2646 movups (IVP), IV
2647 call _aesni_inc_init
2648 cmp $64, LEN
2649 jb .Lctr_enc_loop1
2650 .align 4
2651 .Lctr_enc_loop4:
2652 movaps IV, STATE1
2653 call _aesni_inc
2654 movups (INP), IN1
2655 movaps IV, STATE2
2656 call _aesni_inc
2657 movups 0x10(INP), IN2
2658 movaps IV, STATE3
2659 call _aesni_inc
2660 movups 0x20(INP), IN3
2661 movaps IV, STATE4
2662 call _aesni_inc
2663 movups 0x30(INP), IN4
2664 call _aesni_enc4
2665 pxor IN1, STATE1
2666 movups STATE1, (OUTP)
2667 pxor IN2, STATE2
2668 movups STATE2, 0x10(OUTP)
2669 pxor IN3, STATE3
2670 movups STATE3, 0x20(OUTP)
2671 pxor IN4, STATE4
2672 movups STATE4, 0x30(OUTP)
2673 sub $64, LEN
2674 add $64, INP
2675 add $64, OUTP
2676 cmp $64, LEN
2677 jge .Lctr_enc_loop4
2678 cmp $16, LEN
2679 jb .Lctr_enc_ret
2680 .align 4
2681 .Lctr_enc_loop1:
2682 movaps IV, STATE
2683 call _aesni_inc
2684 movups (INP), IN
2685 call _aesni_enc1
2686 pxor IN, STATE
2687 movups STATE, (OUTP)
2688 sub $16, LEN
2689 add $16, INP
2690 add $16, OUTP
2691 cmp $16, LEN
2692 jge .Lctr_enc_loop1
2693 .Lctr_enc_ret:
2694 movups IV, (IVP)
2695 .Lctr_enc_just_ret:
2696 FRAME_END
2697 ret
2698 SYM_FUNC_END(aesni_ctr_enc)
2700 /*
2701 * _aesni_gf128mul_x_ble: internal ABI
2702 * Multiply in GF(2^128) for XTS IVs
2703 * input:
2704 * IV: current IV
2705 * GF128MUL_MASK == mask with 0x87 and 0x01
2706 * output:
2707 * IV: next IV
2708 * changed:
2709 * CTR: == temporary value
2710 */
2711 #define _aesni_gf128mul_x_ble() \
2712 pshufd $0x13, IV, CTR; \
2713 paddq IV, IV; \
2714 psrad $31, CTR; \
2715 pand GF128MUL_MASK, CTR; \
2716 pxor CTR, IV;
2718 /*
2719 * void aesni_xts_crypt8(const struct crypto_aes_ctx *ctx, u8 *dst,
2720 * const u8 *src, bool enc, le128 *iv)
2721 */
2722 SYM_FUNC_START(aesni_xts_crypt8)
2723 FRAME_BEGIN
2724 cmpb $0, %cl
2725 movl $0, %ecx
2726 movl $240, %r10d
2727 leaq _aesni_enc4, %r11
2728 leaq _aesni_dec4, %rax
2729 cmovel %r10d, %ecx
2730 cmoveq %rax, %r11
2732 movdqa .Lgf128mul_x_ble_mask, GF128MUL_MASK
2733 movups (IVP), IV
2735 mov 480(KEYP), KLEN
2736 addq %rcx, KEYP
2738 movdqa IV, STATE1
2739 movdqu 0x00(INP), INC
2740 pxor INC, STATE1
2741 movdqu IV, 0x00(OUTP)
2743 _aesni_gf128mul_x_ble()
2744 movdqa IV, STATE2
2745 movdqu 0x10(INP), INC
2746 pxor INC, STATE2
2747 movdqu IV, 0x10(OUTP)
2749 _aesni_gf128mul_x_ble()
2750 movdqa IV, STATE3
2751 movdqu 0x20(INP), INC
2752 pxor INC, STATE3
2753 movdqu IV, 0x20(OUTP)
2755 _aesni_gf128mul_x_ble()
2756 movdqa IV, STATE4
2757 movdqu 0x30(INP), INC
2758 pxor INC, STATE4
2759 movdqu IV, 0x30(OUTP)
2761 CALL_NOSPEC %r11
2763 movdqu 0x00(OUTP), INC
2764 pxor INC, STATE1
2765 movdqu STATE1, 0x00(OUTP)
2767 _aesni_gf128mul_x_ble()
2768 movdqa IV, STATE1
2769 movdqu 0x40(INP), INC
2770 pxor INC, STATE1
2771 movdqu IV, 0x40(OUTP)
2773 movdqu 0x10(OUTP), INC
2774 pxor INC, STATE2
2775 movdqu STATE2, 0x10(OUTP)
2777 _aesni_gf128mul_x_ble()
2778 movdqa IV, STATE2
2779 movdqu 0x50(INP), INC
2780 pxor INC, STATE2
2781 movdqu IV, 0x50(OUTP)
2783 movdqu 0x20(OUTP), INC
2784 pxor INC, STATE3
2785 movdqu STATE3, 0x20(OUTP)
2787 _aesni_gf128mul_x_ble()
2788 movdqa IV, STATE3
2789 movdqu 0x60(INP), INC
2790 pxor INC, STATE3
2791 movdqu IV, 0x60(OUTP)
2793 movdqu 0x30(OUTP), INC
2794 pxor INC, STATE4
2795 movdqu STATE4, 0x30(OUTP)
2797 _aesni_gf128mul_x_ble()
2798 movdqa IV, STATE4
2799 movdqu 0x70(INP), INC
2800 pxor INC, STATE4
2801 movdqu IV, 0x70(OUTP)
2803 _aesni_gf128mul_x_ble()
2804 movups IV, (IVP)
2806 CALL_NOSPEC %r11
2808 movdqu 0x40(OUTP), INC
2809 pxor INC, STATE1
2810 movdqu STATE1, 0x40(OUTP)
2812 movdqu 0x50(OUTP), INC
2813 pxor INC, STATE2
2814 movdqu STATE2, 0x50(OUTP)
2816 movdqu 0x60(OUTP), INC
2817 pxor INC, STATE3
2818 movdqu STATE3, 0x60(OUTP)
2820 movdqu 0x70(OUTP), INC
2821 pxor INC, STATE4
2822 movdqu STATE4, 0x70(OUTP)
2824 FRAME_END
2825 ret
2826 SYM_FUNC_END(aesni_xts_crypt8)
2828 #endif