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54b6a1bd HY |
1 | /* |
2 | * Implement AES algorithm in Intel AES-NI instructions. | |
3 | * | |
4 | * The white paper of AES-NI instructions can be downloaded from: | |
5 | * http://softwarecommunity.intel.com/isn/downloads/intelavx/AES-Instructions-Set_WP.pdf | |
6 | * | |
7 | * Copyright (C) 2008, Intel Corp. | |
8 | * Author: Huang Ying <ying.huang@intel.com> | |
9 | * Vinodh Gopal <vinodh.gopal@intel.com> | |
10 | * Kahraman Akdemir | |
11 | * | |
0bd82f5f TS |
12 | * Added RFC4106 AES-GCM support for 128-bit keys under the AEAD |
13 | * interface for 64-bit kernels. | |
14 | * Authors: Erdinc Ozturk (erdinc.ozturk@intel.com) | |
15 | * Aidan O'Mahony (aidan.o.mahony@intel.com) | |
16 | * Adrian Hoban <adrian.hoban@intel.com> | |
17 | * James Guilford (james.guilford@intel.com) | |
18 | * Gabriele Paoloni <gabriele.paoloni@intel.com> | |
19 | * Tadeusz Struk (tadeusz.struk@intel.com) | |
20 | * Wajdi Feghali (wajdi.k.feghali@intel.com) | |
21 | * Copyright (c) 2010, Intel Corporation. | |
22 | * | |
0d258efb MK |
23 | * Ported x86_64 version to x86: |
24 | * Author: Mathias Krause <minipli@googlemail.com> | |
25 | * | |
54b6a1bd HY |
26 | * This program is free software; you can redistribute it and/or modify |
27 | * it under the terms of the GNU General Public License as published by | |
28 | * the Free Software Foundation; either version 2 of the License, or | |
29 | * (at your option) any later version. | |
30 | */ | |
31 | ||
32 | #include <linux/linkage.h> | |
b369e521 | 33 | #include <asm/inst.h> |
8691ccd7 | 34 | #include <asm/frame.h> |
9697fa39 | 35 | #include <asm/nospec-branch.h> |
54b6a1bd | 36 | |
e31ac32d TM |
37 | /* |
38 | * The following macros are used to move an (un)aligned 16 byte value to/from | |
39 | * an XMM register. This can done for either FP or integer values, for FP use | |
40 | * movaps (move aligned packed single) or integer use movdqa (move double quad | |
41 | * aligned). It doesn't make a performance difference which instruction is used | |
42 | * since Nehalem (original Core i7) was released. However, the movaps is a byte | |
43 | * shorter, so that is the one we'll use for now. (same for unaligned). | |
44 | */ | |
45 | #define MOVADQ movaps | |
46 | #define MOVUDQ movups | |
47 | ||
559ad0ff | 48 | #ifdef __x86_64__ |
e31ac32d | 49 | |
e183914a DV |
50 | # constants in mergeable sections, linker can reorder and merge |
51 | .section .rodata.cst16.gf128mul_x_ble_mask, "aM", @progbits, 16 | |
c456a9cd JK |
52 | .align 16 |
53 | .Lgf128mul_x_ble_mask: | |
54 | .octa 0x00000000000000010000000000000087 | |
e183914a DV |
55 | .section .rodata.cst16.POLY, "aM", @progbits, 16 |
56 | .align 16 | |
0bd82f5f | 57 | POLY: .octa 0xC2000000000000000000000000000001 |
e183914a DV |
58 | .section .rodata.cst16.TWOONE, "aM", @progbits, 16 |
59 | .align 16 | |
0bd82f5f TS |
60 | TWOONE: .octa 0x00000001000000000000000000000001 |
61 | ||
e183914a DV |
62 | .section .rodata.cst16.SHUF_MASK, "aM", @progbits, 16 |
63 | .align 16 | |
0bd82f5f | 64 | SHUF_MASK: .octa 0x000102030405060708090A0B0C0D0E0F |
e183914a DV |
65 | .section .rodata.cst16.MASK1, "aM", @progbits, 16 |
66 | .align 16 | |
0bd82f5f | 67 | MASK1: .octa 0x0000000000000000ffffffffffffffff |
e183914a DV |
68 | .section .rodata.cst16.MASK2, "aM", @progbits, 16 |
69 | .align 16 | |
0bd82f5f | 70 | MASK2: .octa 0xffffffffffffffff0000000000000000 |
e183914a DV |
71 | .section .rodata.cst16.ONE, "aM", @progbits, 16 |
72 | .align 16 | |
0bd82f5f | 73 | ONE: .octa 0x00000000000000000000000000000001 |
e183914a DV |
74 | .section .rodata.cst16.F_MIN_MASK, "aM", @progbits, 16 |
75 | .align 16 | |
0bd82f5f | 76 | F_MIN_MASK: .octa 0xf1f2f3f4f5f6f7f8f9fafbfcfdfeff0 |
e183914a DV |
77 | .section .rodata.cst16.dec, "aM", @progbits, 16 |
78 | .align 16 | |
0bd82f5f | 79 | dec: .octa 0x1 |
e183914a DV |
80 | .section .rodata.cst16.enc, "aM", @progbits, 16 |
81 | .align 16 | |
0bd82f5f TS |
82 | enc: .octa 0x2 |
83 | ||
e183914a DV |
84 | # order of these constants should not change. |
85 | # more specifically, ALL_F should follow SHIFT_MASK, | |
86 | # and zero should follow ALL_F | |
87 | .section .rodata, "a", @progbits | |
88 | .align 16 | |
89 | SHIFT_MASK: .octa 0x0f0e0d0c0b0a09080706050403020100 | |
90 | ALL_F: .octa 0xffffffffffffffffffffffffffffffff | |
91 | .octa 0x00000000000000000000000000000000 | |
92 | ||
54b6a1bd HY |
93 | .text |
94 | ||
0bd82f5f TS |
95 | |
96 | #define STACK_OFFSET 8*3 | |
97 | #define HashKey 16*0 // store HashKey <<1 mod poly here | |
98 | #define HashKey_2 16*1 // store HashKey^2 <<1 mod poly here | |
99 | #define HashKey_3 16*2 // store HashKey^3 <<1 mod poly here | |
100 | #define HashKey_4 16*3 // store HashKey^4 <<1 mod poly here | |
101 | #define HashKey_k 16*4 // store XOR of High 64 bits and Low 64 | |
102 | // bits of HashKey <<1 mod poly here | |
103 | //(for Karatsuba purposes) | |
104 | #define HashKey_2_k 16*5 // store XOR of High 64 bits and Low 64 | |
105 | // bits of HashKey^2 <<1 mod poly here | |
106 | // (for Karatsuba purposes) | |
107 | #define HashKey_3_k 16*6 // store XOR of High 64 bits and Low 64 | |
108 | // bits of HashKey^3 <<1 mod poly here | |
109 | // (for Karatsuba purposes) | |
110 | #define HashKey_4_k 16*7 // store XOR of High 64 bits and Low 64 | |
111 | // bits of HashKey^4 <<1 mod poly here | |
112 | // (for Karatsuba purposes) | |
113 | #define VARIABLE_OFFSET 16*8 | |
114 | ||
115 | #define arg1 rdi | |
116 | #define arg2 rsi | |
117 | #define arg3 rdx | |
118 | #define arg4 rcx | |
119 | #define arg5 r8 | |
120 | #define arg6 r9 | |
121 | #define arg7 STACK_OFFSET+8(%r14) | |
122 | #define arg8 STACK_OFFSET+16(%r14) | |
123 | #define arg9 STACK_OFFSET+24(%r14) | |
124 | #define arg10 STACK_OFFSET+32(%r14) | |
e31ac32d | 125 | #define keysize 2*15*16(%arg1) |
559ad0ff | 126 | #endif |
0bd82f5f TS |
127 | |
128 | ||
54b6a1bd HY |
129 | #define STATE1 %xmm0 |
130 | #define STATE2 %xmm4 | |
131 | #define STATE3 %xmm5 | |
132 | #define STATE4 %xmm6 | |
133 | #define STATE STATE1 | |
134 | #define IN1 %xmm1 | |
135 | #define IN2 %xmm7 | |
136 | #define IN3 %xmm8 | |
137 | #define IN4 %xmm9 | |
138 | #define IN IN1 | |
139 | #define KEY %xmm2 | |
140 | #define IV %xmm3 | |
0d258efb | 141 | |
12387a46 HY |
142 | #define BSWAP_MASK %xmm10 |
143 | #define CTR %xmm11 | |
144 | #define INC %xmm12 | |
54b6a1bd | 145 | |
c456a9cd JK |
146 | #define GF128MUL_MASK %xmm10 |
147 | ||
0d258efb MK |
148 | #ifdef __x86_64__ |
149 | #define AREG %rax | |
54b6a1bd HY |
150 | #define KEYP %rdi |
151 | #define OUTP %rsi | |
0d258efb | 152 | #define UKEYP OUTP |
54b6a1bd HY |
153 | #define INP %rdx |
154 | #define LEN %rcx | |
155 | #define IVP %r8 | |
156 | #define KLEN %r9d | |
157 | #define T1 %r10 | |
158 | #define TKEYP T1 | |
159 | #define T2 %r11 | |
12387a46 | 160 | #define TCTR_LOW T2 |
0d258efb MK |
161 | #else |
162 | #define AREG %eax | |
163 | #define KEYP %edi | |
164 | #define OUTP AREG | |
165 | #define UKEYP OUTP | |
166 | #define INP %edx | |
167 | #define LEN %esi | |
168 | #define IVP %ebp | |
169 | #define KLEN %ebx | |
170 | #define T1 %ecx | |
171 | #define TKEYP T1 | |
172 | #endif | |
54b6a1bd | 173 | |
6c2c86b3 DW |
174 | .macro FUNC_SAVE |
175 | push %r12 | |
176 | push %r13 | |
177 | push %r14 | |
178 | mov %rsp, %r14 | |
179 | # | |
180 | # states of %xmm registers %xmm6:%xmm15 not saved | |
181 | # all %xmm registers are clobbered | |
182 | # | |
183 | sub $VARIABLE_OFFSET, %rsp | |
184 | and $~63, %rsp | |
185 | .endm | |
186 | ||
187 | ||
188 | .macro FUNC_RESTORE | |
189 | mov %r14, %rsp | |
190 | pop %r14 | |
191 | pop %r13 | |
192 | pop %r12 | |
193 | .endm | |
0bd82f5f | 194 | |
7af964c2 DW |
195 | |
196 | # GCM_INIT initializes a gcm_context struct to prepare for encoding/decoding. | |
197 | # Clobbers rax, r10-r13 and xmm0-xmm6, %xmm13 | |
198 | .macro GCM_INIT | |
199 | mov %arg6, %r12 | |
200 | movdqu (%r12), %xmm13 | |
201 | movdqa SHUF_MASK(%rip), %xmm2 | |
202 | PSHUFB_XMM %xmm2, %xmm13 | |
203 | ||
204 | # precompute HashKey<<1 mod poly from the HashKey (required for GHASH) | |
205 | ||
206 | movdqa %xmm13, %xmm2 | |
207 | psllq $1, %xmm13 | |
208 | psrlq $63, %xmm2 | |
209 | movdqa %xmm2, %xmm1 | |
210 | pslldq $8, %xmm2 | |
211 | psrldq $8, %xmm1 | |
212 | por %xmm2, %xmm13 | |
213 | ||
214 | # reduce HashKey<<1 | |
215 | ||
216 | pshufd $0x24, %xmm1, %xmm2 | |
217 | pcmpeqd TWOONE(%rip), %xmm2 | |
218 | pand POLY(%rip), %xmm2 | |
219 | pxor %xmm2, %xmm13 | |
220 | movdqa %xmm13, HashKey(%rsp) | |
221 | mov %arg4, %r13 # %xmm13 holds HashKey<<1 (mod poly) | |
222 | and $-16, %r13 | |
223 | mov %r13, %r12 | |
224 | .endm | |
225 | ||
559ad0ff | 226 | #ifdef __x86_64__ |
0bd82f5f TS |
227 | /* GHASH_MUL MACRO to implement: Data*HashKey mod (128,127,126,121,0) |
228 | * | |
229 | * | |
230 | * Input: A and B (128-bits each, bit-reflected) | |
231 | * Output: C = A*B*x mod poly, (i.e. >>1 ) | |
232 | * To compute GH = GH*HashKey mod poly, give HK = HashKey<<1 mod poly as input | |
233 | * GH = GH * HK * x mod poly which is equivalent to GH*HashKey mod poly. | |
234 | * | |
235 | */ | |
236 | .macro GHASH_MUL GH HK TMP1 TMP2 TMP3 TMP4 TMP5 | |
237 | movdqa \GH, \TMP1 | |
238 | pshufd $78, \GH, \TMP2 | |
239 | pshufd $78, \HK, \TMP3 | |
240 | pxor \GH, \TMP2 # TMP2 = a1+a0 | |
241 | pxor \HK, \TMP3 # TMP3 = b1+b0 | |
242 | PCLMULQDQ 0x11, \HK, \TMP1 # TMP1 = a1*b1 | |
243 | PCLMULQDQ 0x00, \HK, \GH # GH = a0*b0 | |
244 | PCLMULQDQ 0x00, \TMP3, \TMP2 # TMP2 = (a0+a1)*(b1+b0) | |
245 | pxor \GH, \TMP2 | |
246 | pxor \TMP1, \TMP2 # TMP2 = (a0*b0)+(a1*b0) | |
247 | movdqa \TMP2, \TMP3 | |
248 | pslldq $8, \TMP3 # left shift TMP3 2 DWs | |
249 | psrldq $8, \TMP2 # right shift TMP2 2 DWs | |
250 | pxor \TMP3, \GH | |
251 | pxor \TMP2, \TMP1 # TMP2:GH holds the result of GH*HK | |
252 | ||
253 | # first phase of the reduction | |
254 | ||
255 | movdqa \GH, \TMP2 | |
256 | movdqa \GH, \TMP3 | |
257 | movdqa \GH, \TMP4 # copy GH into TMP2,TMP3 and TMP4 | |
258 | # in in order to perform | |
259 | # independent shifts | |
260 | pslld $31, \TMP2 # packed right shift <<31 | |
261 | pslld $30, \TMP3 # packed right shift <<30 | |
262 | pslld $25, \TMP4 # packed right shift <<25 | |
263 | pxor \TMP3, \TMP2 # xor the shifted versions | |
264 | pxor \TMP4, \TMP2 | |
265 | movdqa \TMP2, \TMP5 | |
266 | psrldq $4, \TMP5 # right shift TMP5 1 DW | |
267 | pslldq $12, \TMP2 # left shift TMP2 3 DWs | |
268 | pxor \TMP2, \GH | |
269 | ||
270 | # second phase of the reduction | |
271 | ||
272 | movdqa \GH,\TMP2 # copy GH into TMP2,TMP3 and TMP4 | |
273 | # in in order to perform | |
274 | # independent shifts | |
275 | movdqa \GH,\TMP3 | |
276 | movdqa \GH,\TMP4 | |
277 | psrld $1,\TMP2 # packed left shift >>1 | |
278 | psrld $2,\TMP3 # packed left shift >>2 | |
279 | psrld $7,\TMP4 # packed left shift >>7 | |
280 | pxor \TMP3,\TMP2 # xor the shifted versions | |
281 | pxor \TMP4,\TMP2 | |
282 | pxor \TMP5, \TMP2 | |
283 | pxor \TMP2, \GH | |
284 | pxor \TMP1, \GH # result is in TMP1 | |
285 | .endm | |
286 | ||
b20209c9 JS |
287 | # Reads DLEN bytes starting at DPTR and stores in XMMDst |
288 | # where 0 < DLEN < 16 | |
289 | # Clobbers %rax, DLEN and XMM1 | |
290 | .macro READ_PARTIAL_BLOCK DPTR DLEN XMM1 XMMDst | |
291 | cmp $8, \DLEN | |
292 | jl _read_lt8_\@ | |
293 | mov (\DPTR), %rax | |
294 | MOVQ_R64_XMM %rax, \XMMDst | |
295 | sub $8, \DLEN | |
296 | jz _done_read_partial_block_\@ | |
297 | xor %eax, %eax | |
298 | _read_next_byte_\@: | |
299 | shl $8, %rax | |
300 | mov 7(\DPTR, \DLEN, 1), %al | |
301 | dec \DLEN | |
302 | jnz _read_next_byte_\@ | |
303 | MOVQ_R64_XMM %rax, \XMM1 | |
304 | pslldq $8, \XMM1 | |
305 | por \XMM1, \XMMDst | |
306 | jmp _done_read_partial_block_\@ | |
307 | _read_lt8_\@: | |
308 | xor %eax, %eax | |
309 | _read_next_byte_lt8_\@: | |
310 | shl $8, %rax | |
311 | mov -1(\DPTR, \DLEN, 1), %al | |
312 | dec \DLEN | |
313 | jnz _read_next_byte_lt8_\@ | |
314 | MOVQ_R64_XMM %rax, \XMMDst | |
315 | _done_read_partial_block_\@: | |
316 | .endm | |
317 | ||
0bd82f5f TS |
318 | /* |
319 | * if a = number of total plaintext bytes | |
320 | * b = floor(a/16) | |
321 | * num_initial_blocks = b mod 4 | |
322 | * encrypt the initial num_initial_blocks blocks and apply ghash on | |
323 | * the ciphertext | |
324 | * %r10, %r11, %r12, %rax, %xmm5, %xmm6, %xmm7, %xmm8, %xmm9 registers | |
325 | * are clobbered | |
326 | * arg1, %arg2, %arg3, %r14 are used as a pointer only, not modified | |
327 | */ | |
328 | ||
0bd82f5f | 329 | |
e1fd316f | 330 | .macro INITIAL_BLOCKS_ENC_DEC TMP1 TMP2 TMP3 TMP4 TMP5 XMM0 XMM1 \ |
3c097b80 | 331 | XMM2 XMM3 XMM4 XMMDst TMP6 TMP7 i i_seq operation |
e31ac32d | 332 | MOVADQ SHUF_MASK(%rip), %xmm14 |
3c097b80 | 333 | mov arg7, %r10 # %r10 = AAD |
1ecdd37e | 334 | mov arg8, %r11 # %r11 = aadLen |
3c097b80 | 335 | pxor %xmm\i, %xmm\i |
0487ccac SD |
336 | pxor \XMM2, \XMM2 |
337 | ||
338 | cmp $16, %r11 | |
e1fd316f DW |
339 | jl _get_AAD_rest\@ |
340 | _get_AAD_blocks\@: | |
0487ccac SD |
341 | movdqu (%r10), %xmm\i |
342 | PSHUFB_XMM %xmm14, %xmm\i # byte-reflect the AAD data | |
343 | pxor %xmm\i, \XMM2 | |
344 | GHASH_MUL \XMM2, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
345 | add $16, %r10 | |
0487ccac SD |
346 | sub $16, %r11 |
347 | cmp $16, %r11 | |
e1fd316f | 348 | jge _get_AAD_blocks\@ |
0487ccac SD |
349 | |
350 | movdqu \XMM2, %xmm\i | |
1ecdd37e JS |
351 | |
352 | /* read the last <16B of AAD */ | |
e1fd316f | 353 | _get_AAD_rest\@: |
0487ccac | 354 | cmp $0, %r11 |
e1fd316f | 355 | je _get_AAD_done\@ |
0487ccac | 356 | |
1ecdd37e | 357 | READ_PARTIAL_BLOCK %r10, %r11, \TMP1, %xmm\i |
3c097b80 | 358 | PSHUFB_XMM %xmm14, %xmm\i # byte-reflect the AAD data |
0487ccac SD |
359 | pxor \XMM2, %xmm\i |
360 | GHASH_MUL %xmm\i, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
3c097b80 | 361 | |
e1fd316f | 362 | _get_AAD_done\@: |
3c097b80 | 363 | xor %r11, %r11 # initialise the data pointer offset as zero |
0487ccac | 364 | # start AES for num_initial_blocks blocks |
3c097b80 TS |
365 | |
366 | mov %arg5, %rax # %rax = *Y0 | |
367 | movdqu (%rax), \XMM0 # XMM0 = Y0 | |
3c097b80 TS |
368 | PSHUFB_XMM %xmm14, \XMM0 |
369 | ||
370 | .if (\i == 5) || (\i == 6) || (\i == 7) | |
3c097b80 | 371 | |
e31ac32d TM |
372 | MOVADQ ONE(%RIP),\TMP1 |
373 | MOVADQ 0(%arg1),\TMP2 | |
3c097b80 | 374 | .irpc index, \i_seq |
e31ac32d | 375 | paddd \TMP1, \XMM0 # INCR Y0 |
e1fd316f DW |
376 | .ifc \operation, dec |
377 | movdqa \XMM0, %xmm\index | |
378 | .else | |
e31ac32d | 379 | MOVADQ \XMM0, %xmm\index |
e1fd316f | 380 | .endif |
e31ac32d TM |
381 | PSHUFB_XMM %xmm14, %xmm\index # perform a 16 byte swap |
382 | pxor \TMP2, %xmm\index | |
3c097b80 | 383 | .endr |
e31ac32d TM |
384 | lea 0x10(%arg1),%r10 |
385 | mov keysize,%eax | |
386 | shr $2,%eax # 128->4, 192->6, 256->8 | |
387 | add $5,%eax # 128->9, 192->11, 256->13 | |
388 | ||
e1fd316f | 389 | aes_loop_initial_\@: |
e31ac32d TM |
390 | MOVADQ (%r10),\TMP1 |
391 | .irpc index, \i_seq | |
392 | AESENC \TMP1, %xmm\index | |
3c097b80 | 393 | .endr |
e31ac32d TM |
394 | add $16,%r10 |
395 | sub $1,%eax | |
e1fd316f | 396 | jnz aes_loop_initial_\@ |
e31ac32d TM |
397 | |
398 | MOVADQ (%r10), \TMP1 | |
3c097b80 | 399 | .irpc index, \i_seq |
e31ac32d | 400 | AESENCLAST \TMP1, %xmm\index # Last Round |
3c097b80 TS |
401 | .endr |
402 | .irpc index, \i_seq | |
403 | movdqu (%arg3 , %r11, 1), \TMP1 | |
404 | pxor \TMP1, %xmm\index | |
405 | movdqu %xmm\index, (%arg2 , %r11, 1) | |
406 | # write back plaintext/ciphertext for num_initial_blocks | |
407 | add $16, %r11 | |
e1fd316f DW |
408 | |
409 | .ifc \operation, dec | |
410 | movdqa \TMP1, %xmm\index | |
411 | .endif | |
3c097b80 TS |
412 | PSHUFB_XMM %xmm14, %xmm\index |
413 | ||
414 | # prepare plaintext/ciphertext for GHASH computation | |
415 | .endr | |
416 | .endif | |
0487ccac | 417 | |
3c097b80 TS |
418 | # apply GHASH on num_initial_blocks blocks |
419 | ||
420 | .if \i == 5 | |
421 | pxor %xmm5, %xmm6 | |
422 | GHASH_MUL %xmm6, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
423 | pxor %xmm6, %xmm7 | |
424 | GHASH_MUL %xmm7, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
425 | pxor %xmm7, %xmm8 | |
426 | GHASH_MUL %xmm8, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
427 | .elseif \i == 6 | |
428 | pxor %xmm6, %xmm7 | |
429 | GHASH_MUL %xmm7, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
430 | pxor %xmm7, %xmm8 | |
431 | GHASH_MUL %xmm8, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
432 | .elseif \i == 7 | |
433 | pxor %xmm7, %xmm8 | |
434 | GHASH_MUL %xmm8, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
435 | .endif | |
436 | cmp $64, %r13 | |
e1fd316f | 437 | jl _initial_blocks_done\@ |
3c097b80 TS |
438 | # no need for precomputed values |
439 | /* | |
440 | * | |
441 | * Precomputations for HashKey parallel with encryption of first 4 blocks. | |
442 | * Haskey_i_k holds XORed values of the low and high parts of the Haskey_i | |
443 | */ | |
e31ac32d TM |
444 | MOVADQ ONE(%RIP),\TMP1 |
445 | paddd \TMP1, \XMM0 # INCR Y0 | |
446 | MOVADQ \XMM0, \XMM1 | |
3c097b80 TS |
447 | PSHUFB_XMM %xmm14, \XMM1 # perform a 16 byte swap |
448 | ||
e31ac32d TM |
449 | paddd \TMP1, \XMM0 # INCR Y0 |
450 | MOVADQ \XMM0, \XMM2 | |
3c097b80 TS |
451 | PSHUFB_XMM %xmm14, \XMM2 # perform a 16 byte swap |
452 | ||
e31ac32d TM |
453 | paddd \TMP1, \XMM0 # INCR Y0 |
454 | MOVADQ \XMM0, \XMM3 | |
3c097b80 TS |
455 | PSHUFB_XMM %xmm14, \XMM3 # perform a 16 byte swap |
456 | ||
e31ac32d TM |
457 | paddd \TMP1, \XMM0 # INCR Y0 |
458 | MOVADQ \XMM0, \XMM4 | |
3c097b80 TS |
459 | PSHUFB_XMM %xmm14, \XMM4 # perform a 16 byte swap |
460 | ||
e31ac32d TM |
461 | MOVADQ 0(%arg1),\TMP1 |
462 | pxor \TMP1, \XMM1 | |
463 | pxor \TMP1, \XMM2 | |
464 | pxor \TMP1, \XMM3 | |
465 | pxor \TMP1, \XMM4 | |
3c097b80 TS |
466 | movdqa \TMP3, \TMP5 |
467 | pshufd $78, \TMP3, \TMP1 | |
468 | pxor \TMP3, \TMP1 | |
469 | movdqa \TMP1, HashKey_k(%rsp) | |
470 | GHASH_MUL \TMP5, \TMP3, \TMP1, \TMP2, \TMP4, \TMP6, \TMP7 | |
471 | # TMP5 = HashKey^2<<1 (mod poly) | |
472 | movdqa \TMP5, HashKey_2(%rsp) | |
473 | # HashKey_2 = HashKey^2<<1 (mod poly) | |
474 | pshufd $78, \TMP5, \TMP1 | |
475 | pxor \TMP5, \TMP1 | |
476 | movdqa \TMP1, HashKey_2_k(%rsp) | |
477 | .irpc index, 1234 # do 4 rounds | |
478 | movaps 0x10*\index(%arg1), \TMP1 | |
479 | AESENC \TMP1, \XMM1 | |
480 | AESENC \TMP1, \XMM2 | |
481 | AESENC \TMP1, \XMM3 | |
482 | AESENC \TMP1, \XMM4 | |
483 | .endr | |
484 | GHASH_MUL \TMP5, \TMP3, \TMP1, \TMP2, \TMP4, \TMP6, \TMP7 | |
485 | # TMP5 = HashKey^3<<1 (mod poly) | |
486 | movdqa \TMP5, HashKey_3(%rsp) | |
487 | pshufd $78, \TMP5, \TMP1 | |
488 | pxor \TMP5, \TMP1 | |
489 | movdqa \TMP1, HashKey_3_k(%rsp) | |
490 | .irpc index, 56789 # do next 5 rounds | |
491 | movaps 0x10*\index(%arg1), \TMP1 | |
492 | AESENC \TMP1, \XMM1 | |
493 | AESENC \TMP1, \XMM2 | |
494 | AESENC \TMP1, \XMM3 | |
495 | AESENC \TMP1, \XMM4 | |
496 | .endr | |
497 | GHASH_MUL \TMP5, \TMP3, \TMP1, \TMP2, \TMP4, \TMP6, \TMP7 | |
498 | # TMP5 = HashKey^3<<1 (mod poly) | |
499 | movdqa \TMP5, HashKey_4(%rsp) | |
500 | pshufd $78, \TMP5, \TMP1 | |
501 | pxor \TMP5, \TMP1 | |
502 | movdqa \TMP1, HashKey_4_k(%rsp) | |
e31ac32d TM |
503 | lea 0xa0(%arg1),%r10 |
504 | mov keysize,%eax | |
505 | shr $2,%eax # 128->4, 192->6, 256->8 | |
506 | sub $4,%eax # 128->0, 192->2, 256->4 | |
e1fd316f | 507 | jz aes_loop_pre_done\@ |
e31ac32d | 508 | |
e1fd316f | 509 | aes_loop_pre_\@: |
e31ac32d TM |
510 | MOVADQ (%r10),\TMP2 |
511 | .irpc index, 1234 | |
512 | AESENC \TMP2, %xmm\index | |
513 | .endr | |
514 | add $16,%r10 | |
515 | sub $1,%eax | |
e1fd316f | 516 | jnz aes_loop_pre_\@ |
e31ac32d | 517 | |
e1fd316f | 518 | aes_loop_pre_done\@: |
e31ac32d | 519 | MOVADQ (%r10), \TMP2 |
3c097b80 TS |
520 | AESENCLAST \TMP2, \XMM1 |
521 | AESENCLAST \TMP2, \XMM2 | |
522 | AESENCLAST \TMP2, \XMM3 | |
523 | AESENCLAST \TMP2, \XMM4 | |
524 | movdqu 16*0(%arg3 , %r11 , 1), \TMP1 | |
525 | pxor \TMP1, \XMM1 | |
e1fd316f DW |
526 | .ifc \operation, dec |
527 | movdqu \XMM1, 16*0(%arg2 , %r11 , 1) | |
528 | movdqa \TMP1, \XMM1 | |
529 | .endif | |
3c097b80 TS |
530 | movdqu 16*1(%arg3 , %r11 , 1), \TMP1 |
531 | pxor \TMP1, \XMM2 | |
e1fd316f DW |
532 | .ifc \operation, dec |
533 | movdqu \XMM2, 16*1(%arg2 , %r11 , 1) | |
534 | movdqa \TMP1, \XMM2 | |
535 | .endif | |
3c097b80 TS |
536 | movdqu 16*2(%arg3 , %r11 , 1), \TMP1 |
537 | pxor \TMP1, \XMM3 | |
e1fd316f DW |
538 | .ifc \operation, dec |
539 | movdqu \XMM3, 16*2(%arg2 , %r11 , 1) | |
540 | movdqa \TMP1, \XMM3 | |
541 | .endif | |
3c097b80 TS |
542 | movdqu 16*3(%arg3 , %r11 , 1), \TMP1 |
543 | pxor \TMP1, \XMM4 | |
e1fd316f DW |
544 | .ifc \operation, dec |
545 | movdqu \XMM4, 16*3(%arg2 , %r11 , 1) | |
546 | movdqa \TMP1, \XMM4 | |
547 | .else | |
0bd82f5f TS |
548 | movdqu \XMM1, 16*0(%arg2 , %r11 , 1) |
549 | movdqu \XMM2, 16*1(%arg2 , %r11 , 1) | |
550 | movdqu \XMM3, 16*2(%arg2 , %r11 , 1) | |
551 | movdqu \XMM4, 16*3(%arg2 , %r11 , 1) | |
e1fd316f | 552 | .endif |
3c097b80 | 553 | |
0bd82f5f | 554 | add $64, %r11 |
3c097b80 | 555 | PSHUFB_XMM %xmm14, \XMM1 # perform a 16 byte swap |
0bd82f5f TS |
556 | pxor \XMMDst, \XMM1 |
557 | # combine GHASHed value with the corresponding ciphertext | |
3c097b80 | 558 | PSHUFB_XMM %xmm14, \XMM2 # perform a 16 byte swap |
3c097b80 | 559 | PSHUFB_XMM %xmm14, \XMM3 # perform a 16 byte swap |
3c097b80 TS |
560 | PSHUFB_XMM %xmm14, \XMM4 # perform a 16 byte swap |
561 | ||
e1fd316f | 562 | _initial_blocks_done\@: |
3c097b80 | 563 | |
0bd82f5f TS |
564 | .endm |
565 | ||
566 | /* | |
567 | * encrypt 4 blocks at a time | |
568 | * ghash the 4 previously encrypted ciphertext blocks | |
569 | * arg1, %arg2, %arg3 are used as pointers only, not modified | |
570 | * %r11 is the data offset value | |
571 | */ | |
3c097b80 TS |
572 | .macro GHASH_4_ENCRYPT_4_PARALLEL_ENC TMP1 TMP2 TMP3 TMP4 TMP5 \ |
573 | TMP6 XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 XMM8 operation | |
574 | ||
575 | movdqa \XMM1, \XMM5 | |
576 | movdqa \XMM2, \XMM6 | |
577 | movdqa \XMM3, \XMM7 | |
578 | movdqa \XMM4, \XMM8 | |
579 | ||
580 | movdqa SHUF_MASK(%rip), %xmm15 | |
581 | # multiply TMP5 * HashKey using karatsuba | |
582 | ||
583 | movdqa \XMM5, \TMP4 | |
584 | pshufd $78, \XMM5, \TMP6 | |
585 | pxor \XMM5, \TMP6 | |
586 | paddd ONE(%rip), \XMM0 # INCR CNT | |
587 | movdqa HashKey_4(%rsp), \TMP5 | |
588 | PCLMULQDQ 0x11, \TMP5, \TMP4 # TMP4 = a1*b1 | |
589 | movdqa \XMM0, \XMM1 | |
590 | paddd ONE(%rip), \XMM0 # INCR CNT | |
591 | movdqa \XMM0, \XMM2 | |
592 | paddd ONE(%rip), \XMM0 # INCR CNT | |
593 | movdqa \XMM0, \XMM3 | |
594 | paddd ONE(%rip), \XMM0 # INCR CNT | |
595 | movdqa \XMM0, \XMM4 | |
596 | PSHUFB_XMM %xmm15, \XMM1 # perform a 16 byte swap | |
597 | PCLMULQDQ 0x00, \TMP5, \XMM5 # XMM5 = a0*b0 | |
598 | PSHUFB_XMM %xmm15, \XMM2 # perform a 16 byte swap | |
599 | PSHUFB_XMM %xmm15, \XMM3 # perform a 16 byte swap | |
600 | PSHUFB_XMM %xmm15, \XMM4 # perform a 16 byte swap | |
601 | ||
602 | pxor (%arg1), \XMM1 | |
603 | pxor (%arg1), \XMM2 | |
604 | pxor (%arg1), \XMM3 | |
605 | pxor (%arg1), \XMM4 | |
606 | movdqa HashKey_4_k(%rsp), \TMP5 | |
607 | PCLMULQDQ 0x00, \TMP5, \TMP6 # TMP6 = (a1+a0)*(b1+b0) | |
608 | movaps 0x10(%arg1), \TMP1 | |
609 | AESENC \TMP1, \XMM1 # Round 1 | |
610 | AESENC \TMP1, \XMM2 | |
611 | AESENC \TMP1, \XMM3 | |
612 | AESENC \TMP1, \XMM4 | |
613 | movaps 0x20(%arg1), \TMP1 | |
614 | AESENC \TMP1, \XMM1 # Round 2 | |
615 | AESENC \TMP1, \XMM2 | |
616 | AESENC \TMP1, \XMM3 | |
617 | AESENC \TMP1, \XMM4 | |
618 | movdqa \XMM6, \TMP1 | |
619 | pshufd $78, \XMM6, \TMP2 | |
620 | pxor \XMM6, \TMP2 | |
621 | movdqa HashKey_3(%rsp), \TMP5 | |
622 | PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1 * b1 | |
623 | movaps 0x30(%arg1), \TMP3 | |
624 | AESENC \TMP3, \XMM1 # Round 3 | |
625 | AESENC \TMP3, \XMM2 | |
626 | AESENC \TMP3, \XMM3 | |
627 | AESENC \TMP3, \XMM4 | |
628 | PCLMULQDQ 0x00, \TMP5, \XMM6 # XMM6 = a0*b0 | |
629 | movaps 0x40(%arg1), \TMP3 | |
630 | AESENC \TMP3, \XMM1 # Round 4 | |
631 | AESENC \TMP3, \XMM2 | |
632 | AESENC \TMP3, \XMM3 | |
633 | AESENC \TMP3, \XMM4 | |
634 | movdqa HashKey_3_k(%rsp), \TMP5 | |
635 | PCLMULQDQ 0x00, \TMP5, \TMP2 # TMP2 = (a1+a0)*(b1+b0) | |
636 | movaps 0x50(%arg1), \TMP3 | |
637 | AESENC \TMP3, \XMM1 # Round 5 | |
638 | AESENC \TMP3, \XMM2 | |
639 | AESENC \TMP3, \XMM3 | |
640 | AESENC \TMP3, \XMM4 | |
641 | pxor \TMP1, \TMP4 | |
642 | # accumulate the results in TMP4:XMM5, TMP6 holds the middle part | |
643 | pxor \XMM6, \XMM5 | |
644 | pxor \TMP2, \TMP6 | |
645 | movdqa \XMM7, \TMP1 | |
646 | pshufd $78, \XMM7, \TMP2 | |
647 | pxor \XMM7, \TMP2 | |
648 | movdqa HashKey_2(%rsp ), \TMP5 | |
649 | ||
650 | # Multiply TMP5 * HashKey using karatsuba | |
651 | ||
652 | PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1*b1 | |
653 | movaps 0x60(%arg1), \TMP3 | |
654 | AESENC \TMP3, \XMM1 # Round 6 | |
655 | AESENC \TMP3, \XMM2 | |
656 | AESENC \TMP3, \XMM3 | |
657 | AESENC \TMP3, \XMM4 | |
658 | PCLMULQDQ 0x00, \TMP5, \XMM7 # XMM7 = a0*b0 | |
659 | movaps 0x70(%arg1), \TMP3 | |
660 | AESENC \TMP3, \XMM1 # Round 7 | |
661 | AESENC \TMP3, \XMM2 | |
662 | AESENC \TMP3, \XMM3 | |
663 | AESENC \TMP3, \XMM4 | |
664 | movdqa HashKey_2_k(%rsp), \TMP5 | |
665 | PCLMULQDQ 0x00, \TMP5, \TMP2 # TMP2 = (a1+a0)*(b1+b0) | |
666 | movaps 0x80(%arg1), \TMP3 | |
667 | AESENC \TMP3, \XMM1 # Round 8 | |
668 | AESENC \TMP3, \XMM2 | |
669 | AESENC \TMP3, \XMM3 | |
670 | AESENC \TMP3, \XMM4 | |
671 | pxor \TMP1, \TMP4 | |
672 | # accumulate the results in TMP4:XMM5, TMP6 holds the middle part | |
673 | pxor \XMM7, \XMM5 | |
674 | pxor \TMP2, \TMP6 | |
675 | ||
676 | # Multiply XMM8 * HashKey | |
677 | # XMM8 and TMP5 hold the values for the two operands | |
678 | ||
679 | movdqa \XMM8, \TMP1 | |
680 | pshufd $78, \XMM8, \TMP2 | |
681 | pxor \XMM8, \TMP2 | |
682 | movdqa HashKey(%rsp), \TMP5 | |
683 | PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1*b1 | |
684 | movaps 0x90(%arg1), \TMP3 | |
685 | AESENC \TMP3, \XMM1 # Round 9 | |
686 | AESENC \TMP3, \XMM2 | |
687 | AESENC \TMP3, \XMM3 | |
688 | AESENC \TMP3, \XMM4 | |
689 | PCLMULQDQ 0x00, \TMP5, \XMM8 # XMM8 = a0*b0 | |
e31ac32d TM |
690 | lea 0xa0(%arg1),%r10 |
691 | mov keysize,%eax | |
692 | shr $2,%eax # 128->4, 192->6, 256->8 | |
693 | sub $4,%eax # 128->0, 192->2, 256->4 | |
694 | jz aes_loop_par_enc_done | |
695 | ||
696 | aes_loop_par_enc: | |
697 | MOVADQ (%r10),\TMP3 | |
698 | .irpc index, 1234 | |
699 | AESENC \TMP3, %xmm\index | |
700 | .endr | |
701 | add $16,%r10 | |
702 | sub $1,%eax | |
703 | jnz aes_loop_par_enc | |
704 | ||
705 | aes_loop_par_enc_done: | |
706 | MOVADQ (%r10), \TMP3 | |
3c097b80 TS |
707 | AESENCLAST \TMP3, \XMM1 # Round 10 |
708 | AESENCLAST \TMP3, \XMM2 | |
709 | AESENCLAST \TMP3, \XMM3 | |
710 | AESENCLAST \TMP3, \XMM4 | |
711 | movdqa HashKey_k(%rsp), \TMP5 | |
712 | PCLMULQDQ 0x00, \TMP5, \TMP2 # TMP2 = (a1+a0)*(b1+b0) | |
713 | movdqu (%arg3,%r11,1), \TMP3 | |
714 | pxor \TMP3, \XMM1 # Ciphertext/Plaintext XOR EK | |
715 | movdqu 16(%arg3,%r11,1), \TMP3 | |
716 | pxor \TMP3, \XMM2 # Ciphertext/Plaintext XOR EK | |
717 | movdqu 32(%arg3,%r11,1), \TMP3 | |
718 | pxor \TMP3, \XMM3 # Ciphertext/Plaintext XOR EK | |
719 | movdqu 48(%arg3,%r11,1), \TMP3 | |
720 | pxor \TMP3, \XMM4 # Ciphertext/Plaintext XOR EK | |
721 | movdqu \XMM1, (%arg2,%r11,1) # Write to the ciphertext buffer | |
722 | movdqu \XMM2, 16(%arg2,%r11,1) # Write to the ciphertext buffer | |
723 | movdqu \XMM3, 32(%arg2,%r11,1) # Write to the ciphertext buffer | |
724 | movdqu \XMM4, 48(%arg2,%r11,1) # Write to the ciphertext buffer | |
725 | PSHUFB_XMM %xmm15, \XMM1 # perform a 16 byte swap | |
726 | PSHUFB_XMM %xmm15, \XMM2 # perform a 16 byte swap | |
727 | PSHUFB_XMM %xmm15, \XMM3 # perform a 16 byte swap | |
728 | PSHUFB_XMM %xmm15, \XMM4 # perform a 16 byte swap | |
729 | ||
730 | pxor \TMP4, \TMP1 | |
731 | pxor \XMM8, \XMM5 | |
732 | pxor \TMP6, \TMP2 | |
733 | pxor \TMP1, \TMP2 | |
734 | pxor \XMM5, \TMP2 | |
735 | movdqa \TMP2, \TMP3 | |
736 | pslldq $8, \TMP3 # left shift TMP3 2 DWs | |
737 | psrldq $8, \TMP2 # right shift TMP2 2 DWs | |
738 | pxor \TMP3, \XMM5 | |
739 | pxor \TMP2, \TMP1 # accumulate the results in TMP1:XMM5 | |
740 | ||
741 | # first phase of reduction | |
742 | ||
743 | movdqa \XMM5, \TMP2 | |
744 | movdqa \XMM5, \TMP3 | |
745 | movdqa \XMM5, \TMP4 | |
746 | # move XMM5 into TMP2, TMP3, TMP4 in order to perform shifts independently | |
747 | pslld $31, \TMP2 # packed right shift << 31 | |
748 | pslld $30, \TMP3 # packed right shift << 30 | |
749 | pslld $25, \TMP4 # packed right shift << 25 | |
750 | pxor \TMP3, \TMP2 # xor the shifted versions | |
751 | pxor \TMP4, \TMP2 | |
752 | movdqa \TMP2, \TMP5 | |
753 | psrldq $4, \TMP5 # right shift T5 1 DW | |
754 | pslldq $12, \TMP2 # left shift T2 3 DWs | |
755 | pxor \TMP2, \XMM5 | |
756 | ||
757 | # second phase of reduction | |
758 | ||
759 | movdqa \XMM5,\TMP2 # make 3 copies of XMM5 into TMP2, TMP3, TMP4 | |
760 | movdqa \XMM5,\TMP3 | |
761 | movdqa \XMM5,\TMP4 | |
762 | psrld $1, \TMP2 # packed left shift >>1 | |
763 | psrld $2, \TMP3 # packed left shift >>2 | |
764 | psrld $7, \TMP4 # packed left shift >>7 | |
765 | pxor \TMP3,\TMP2 # xor the shifted versions | |
766 | pxor \TMP4,\TMP2 | |
767 | pxor \TMP5, \TMP2 | |
768 | pxor \TMP2, \XMM5 | |
769 | pxor \TMP1, \XMM5 # result is in TMP1 | |
770 | ||
771 | pxor \XMM5, \XMM1 | |
772 | .endm | |
773 | ||
774 | /* | |
775 | * decrypt 4 blocks at a time | |
776 | * ghash the 4 previously decrypted ciphertext blocks | |
777 | * arg1, %arg2, %arg3 are used as pointers only, not modified | |
778 | * %r11 is the data offset value | |
779 | */ | |
780 | .macro GHASH_4_ENCRYPT_4_PARALLEL_DEC TMP1 TMP2 TMP3 TMP4 TMP5 \ | |
0bd82f5f TS |
781 | TMP6 XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 XMM8 operation |
782 | ||
783 | movdqa \XMM1, \XMM5 | |
784 | movdqa \XMM2, \XMM6 | |
785 | movdqa \XMM3, \XMM7 | |
786 | movdqa \XMM4, \XMM8 | |
787 | ||
3c097b80 | 788 | movdqa SHUF_MASK(%rip), %xmm15 |
0bd82f5f TS |
789 | # multiply TMP5 * HashKey using karatsuba |
790 | ||
791 | movdqa \XMM5, \TMP4 | |
792 | pshufd $78, \XMM5, \TMP6 | |
793 | pxor \XMM5, \TMP6 | |
794 | paddd ONE(%rip), \XMM0 # INCR CNT | |
795 | movdqa HashKey_4(%rsp), \TMP5 | |
796 | PCLMULQDQ 0x11, \TMP5, \TMP4 # TMP4 = a1*b1 | |
797 | movdqa \XMM0, \XMM1 | |
798 | paddd ONE(%rip), \XMM0 # INCR CNT | |
799 | movdqa \XMM0, \XMM2 | |
800 | paddd ONE(%rip), \XMM0 # INCR CNT | |
801 | movdqa \XMM0, \XMM3 | |
802 | paddd ONE(%rip), \XMM0 # INCR CNT | |
803 | movdqa \XMM0, \XMM4 | |
3c097b80 | 804 | PSHUFB_XMM %xmm15, \XMM1 # perform a 16 byte swap |
0bd82f5f | 805 | PCLMULQDQ 0x00, \TMP5, \XMM5 # XMM5 = a0*b0 |
3c097b80 TS |
806 | PSHUFB_XMM %xmm15, \XMM2 # perform a 16 byte swap |
807 | PSHUFB_XMM %xmm15, \XMM3 # perform a 16 byte swap | |
808 | PSHUFB_XMM %xmm15, \XMM4 # perform a 16 byte swap | |
809 | ||
0bd82f5f TS |
810 | pxor (%arg1), \XMM1 |
811 | pxor (%arg1), \XMM2 | |
812 | pxor (%arg1), \XMM3 | |
813 | pxor (%arg1), \XMM4 | |
814 | movdqa HashKey_4_k(%rsp), \TMP5 | |
815 | PCLMULQDQ 0x00, \TMP5, \TMP6 # TMP6 = (a1+a0)*(b1+b0) | |
816 | movaps 0x10(%arg1), \TMP1 | |
817 | AESENC \TMP1, \XMM1 # Round 1 | |
818 | AESENC \TMP1, \XMM2 | |
819 | AESENC \TMP1, \XMM3 | |
820 | AESENC \TMP1, \XMM4 | |
821 | movaps 0x20(%arg1), \TMP1 | |
822 | AESENC \TMP1, \XMM1 # Round 2 | |
823 | AESENC \TMP1, \XMM2 | |
824 | AESENC \TMP1, \XMM3 | |
825 | AESENC \TMP1, \XMM4 | |
826 | movdqa \XMM6, \TMP1 | |
827 | pshufd $78, \XMM6, \TMP2 | |
828 | pxor \XMM6, \TMP2 | |
829 | movdqa HashKey_3(%rsp), \TMP5 | |
830 | PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1 * b1 | |
831 | movaps 0x30(%arg1), \TMP3 | |
832 | AESENC \TMP3, \XMM1 # Round 3 | |
833 | AESENC \TMP3, \XMM2 | |
834 | AESENC \TMP3, \XMM3 | |
835 | AESENC \TMP3, \XMM4 | |
836 | PCLMULQDQ 0x00, \TMP5, \XMM6 # XMM6 = a0*b0 | |
837 | movaps 0x40(%arg1), \TMP3 | |
838 | AESENC \TMP3, \XMM1 # Round 4 | |
839 | AESENC \TMP3, \XMM2 | |
840 | AESENC \TMP3, \XMM3 | |
841 | AESENC \TMP3, \XMM4 | |
842 | movdqa HashKey_3_k(%rsp), \TMP5 | |
843 | PCLMULQDQ 0x00, \TMP5, \TMP2 # TMP2 = (a1+a0)*(b1+b0) | |
844 | movaps 0x50(%arg1), \TMP3 | |
845 | AESENC \TMP3, \XMM1 # Round 5 | |
846 | AESENC \TMP3, \XMM2 | |
847 | AESENC \TMP3, \XMM3 | |
848 | AESENC \TMP3, \XMM4 | |
849 | pxor \TMP1, \TMP4 | |
850 | # accumulate the results in TMP4:XMM5, TMP6 holds the middle part | |
851 | pxor \XMM6, \XMM5 | |
852 | pxor \TMP2, \TMP6 | |
853 | movdqa \XMM7, \TMP1 | |
854 | pshufd $78, \XMM7, \TMP2 | |
855 | pxor \XMM7, \TMP2 | |
856 | movdqa HashKey_2(%rsp ), \TMP5 | |
857 | ||
858 | # Multiply TMP5 * HashKey using karatsuba | |
859 | ||
860 | PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1*b1 | |
861 | movaps 0x60(%arg1), \TMP3 | |
862 | AESENC \TMP3, \XMM1 # Round 6 | |
863 | AESENC \TMP3, \XMM2 | |
864 | AESENC \TMP3, \XMM3 | |
865 | AESENC \TMP3, \XMM4 | |
866 | PCLMULQDQ 0x00, \TMP5, \XMM7 # XMM7 = a0*b0 | |
867 | movaps 0x70(%arg1), \TMP3 | |
868 | AESENC \TMP3, \XMM1 # Round 7 | |
869 | AESENC \TMP3, \XMM2 | |
870 | AESENC \TMP3, \XMM3 | |
871 | AESENC \TMP3, \XMM4 | |
872 | movdqa HashKey_2_k(%rsp), \TMP5 | |
873 | PCLMULQDQ 0x00, \TMP5, \TMP2 # TMP2 = (a1+a0)*(b1+b0) | |
874 | movaps 0x80(%arg1), \TMP3 | |
875 | AESENC \TMP3, \XMM1 # Round 8 | |
876 | AESENC \TMP3, \XMM2 | |
877 | AESENC \TMP3, \XMM3 | |
878 | AESENC \TMP3, \XMM4 | |
879 | pxor \TMP1, \TMP4 | |
880 | # accumulate the results in TMP4:XMM5, TMP6 holds the middle part | |
881 | pxor \XMM7, \XMM5 | |
882 | pxor \TMP2, \TMP6 | |
883 | ||
884 | # Multiply XMM8 * HashKey | |
885 | # XMM8 and TMP5 hold the values for the two operands | |
886 | ||
887 | movdqa \XMM8, \TMP1 | |
888 | pshufd $78, \XMM8, \TMP2 | |
889 | pxor \XMM8, \TMP2 | |
890 | movdqa HashKey(%rsp), \TMP5 | |
891 | PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1*b1 | |
892 | movaps 0x90(%arg1), \TMP3 | |
893 | AESENC \TMP3, \XMM1 # Round 9 | |
894 | AESENC \TMP3, \XMM2 | |
895 | AESENC \TMP3, \XMM3 | |
896 | AESENC \TMP3, \XMM4 | |
897 | PCLMULQDQ 0x00, \TMP5, \XMM8 # XMM8 = a0*b0 | |
e31ac32d TM |
898 | lea 0xa0(%arg1),%r10 |
899 | mov keysize,%eax | |
900 | shr $2,%eax # 128->4, 192->6, 256->8 | |
901 | sub $4,%eax # 128->0, 192->2, 256->4 | |
902 | jz aes_loop_par_dec_done | |
903 | ||
904 | aes_loop_par_dec: | |
905 | MOVADQ (%r10),\TMP3 | |
906 | .irpc index, 1234 | |
907 | AESENC \TMP3, %xmm\index | |
908 | .endr | |
909 | add $16,%r10 | |
910 | sub $1,%eax | |
911 | jnz aes_loop_par_dec | |
912 | ||
913 | aes_loop_par_dec_done: | |
914 | MOVADQ (%r10), \TMP3 | |
915 | AESENCLAST \TMP3, \XMM1 # last round | |
0bd82f5f TS |
916 | AESENCLAST \TMP3, \XMM2 |
917 | AESENCLAST \TMP3, \XMM3 | |
918 | AESENCLAST \TMP3, \XMM4 | |
919 | movdqa HashKey_k(%rsp), \TMP5 | |
920 | PCLMULQDQ 0x00, \TMP5, \TMP2 # TMP2 = (a1+a0)*(b1+b0) | |
921 | movdqu (%arg3,%r11,1), \TMP3 | |
922 | pxor \TMP3, \XMM1 # Ciphertext/Plaintext XOR EK | |
0bd82f5f TS |
923 | movdqu \XMM1, (%arg2,%r11,1) # Write to plaintext buffer |
924 | movdqa \TMP3, \XMM1 | |
0bd82f5f TS |
925 | movdqu 16(%arg3,%r11,1), \TMP3 |
926 | pxor \TMP3, \XMM2 # Ciphertext/Plaintext XOR EK | |
0bd82f5f TS |
927 | movdqu \XMM2, 16(%arg2,%r11,1) # Write to plaintext buffer |
928 | movdqa \TMP3, \XMM2 | |
0bd82f5f TS |
929 | movdqu 32(%arg3,%r11,1), \TMP3 |
930 | pxor \TMP3, \XMM3 # Ciphertext/Plaintext XOR EK | |
0bd82f5f TS |
931 | movdqu \XMM3, 32(%arg2,%r11,1) # Write to plaintext buffer |
932 | movdqa \TMP3, \XMM3 | |
0bd82f5f TS |
933 | movdqu 48(%arg3,%r11,1), \TMP3 |
934 | pxor \TMP3, \XMM4 # Ciphertext/Plaintext XOR EK | |
0bd82f5f TS |
935 | movdqu \XMM4, 48(%arg2,%r11,1) # Write to plaintext buffer |
936 | movdqa \TMP3, \XMM4 | |
3c097b80 TS |
937 | PSHUFB_XMM %xmm15, \XMM1 # perform a 16 byte swap |
938 | PSHUFB_XMM %xmm15, \XMM2 # perform a 16 byte swap | |
939 | PSHUFB_XMM %xmm15, \XMM3 # perform a 16 byte swap | |
940 | PSHUFB_XMM %xmm15, \XMM4 # perform a 16 byte swap | |
0bd82f5f TS |
941 | |
942 | pxor \TMP4, \TMP1 | |
943 | pxor \XMM8, \XMM5 | |
944 | pxor \TMP6, \TMP2 | |
945 | pxor \TMP1, \TMP2 | |
946 | pxor \XMM5, \TMP2 | |
947 | movdqa \TMP2, \TMP3 | |
948 | pslldq $8, \TMP3 # left shift TMP3 2 DWs | |
949 | psrldq $8, \TMP2 # right shift TMP2 2 DWs | |
950 | pxor \TMP3, \XMM5 | |
951 | pxor \TMP2, \TMP1 # accumulate the results in TMP1:XMM5 | |
952 | ||
953 | # first phase of reduction | |
954 | ||
955 | movdqa \XMM5, \TMP2 | |
956 | movdqa \XMM5, \TMP3 | |
957 | movdqa \XMM5, \TMP4 | |
958 | # move XMM5 into TMP2, TMP3, TMP4 in order to perform shifts independently | |
959 | pslld $31, \TMP2 # packed right shift << 31 | |
960 | pslld $30, \TMP3 # packed right shift << 30 | |
961 | pslld $25, \TMP4 # packed right shift << 25 | |
962 | pxor \TMP3, \TMP2 # xor the shifted versions | |
963 | pxor \TMP4, \TMP2 | |
964 | movdqa \TMP2, \TMP5 | |
965 | psrldq $4, \TMP5 # right shift T5 1 DW | |
966 | pslldq $12, \TMP2 # left shift T2 3 DWs | |
967 | pxor \TMP2, \XMM5 | |
968 | ||
969 | # second phase of reduction | |
970 | ||
971 | movdqa \XMM5,\TMP2 # make 3 copies of XMM5 into TMP2, TMP3, TMP4 | |
972 | movdqa \XMM5,\TMP3 | |
973 | movdqa \XMM5,\TMP4 | |
974 | psrld $1, \TMP2 # packed left shift >>1 | |
975 | psrld $2, \TMP3 # packed left shift >>2 | |
976 | psrld $7, \TMP4 # packed left shift >>7 | |
977 | pxor \TMP3,\TMP2 # xor the shifted versions | |
978 | pxor \TMP4,\TMP2 | |
979 | pxor \TMP5, \TMP2 | |
980 | pxor \TMP2, \XMM5 | |
981 | pxor \TMP1, \XMM5 # result is in TMP1 | |
982 | ||
983 | pxor \XMM5, \XMM1 | |
984 | .endm | |
985 | ||
986 | /* GHASH the last 4 ciphertext blocks. */ | |
987 | .macro GHASH_LAST_4 TMP1 TMP2 TMP3 TMP4 TMP5 TMP6 \ | |
988 | TMP7 XMM1 XMM2 XMM3 XMM4 XMMDst | |
989 | ||
990 | # Multiply TMP6 * HashKey (using Karatsuba) | |
991 | ||
992 | movdqa \XMM1, \TMP6 | |
993 | pshufd $78, \XMM1, \TMP2 | |
994 | pxor \XMM1, \TMP2 | |
995 | movdqa HashKey_4(%rsp), \TMP5 | |
996 | PCLMULQDQ 0x11, \TMP5, \TMP6 # TMP6 = a1*b1 | |
997 | PCLMULQDQ 0x00, \TMP5, \XMM1 # XMM1 = a0*b0 | |
998 | movdqa HashKey_4_k(%rsp), \TMP4 | |
999 | PCLMULQDQ 0x00, \TMP4, \TMP2 # TMP2 = (a1+a0)*(b1+b0) | |
1000 | movdqa \XMM1, \XMMDst | |
1001 | movdqa \TMP2, \XMM1 # result in TMP6, XMMDst, XMM1 | |
1002 | ||
1003 | # Multiply TMP1 * HashKey (using Karatsuba) | |
1004 | ||
1005 | movdqa \XMM2, \TMP1 | |
1006 | pshufd $78, \XMM2, \TMP2 | |
1007 | pxor \XMM2, \TMP2 | |
1008 | movdqa HashKey_3(%rsp), \TMP5 | |
1009 | PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1*b1 | |
1010 | PCLMULQDQ 0x00, \TMP5, \XMM2 # XMM2 = a0*b0 | |
1011 | movdqa HashKey_3_k(%rsp), \TMP4 | |
1012 | PCLMULQDQ 0x00, \TMP4, \TMP2 # TMP2 = (a1+a0)*(b1+b0) | |
1013 | pxor \TMP1, \TMP6 | |
1014 | pxor \XMM2, \XMMDst | |
1015 | pxor \TMP2, \XMM1 | |
1016 | # results accumulated in TMP6, XMMDst, XMM1 | |
1017 | ||
1018 | # Multiply TMP1 * HashKey (using Karatsuba) | |
1019 | ||
1020 | movdqa \XMM3, \TMP1 | |
1021 | pshufd $78, \XMM3, \TMP2 | |
1022 | pxor \XMM3, \TMP2 | |
1023 | movdqa HashKey_2(%rsp), \TMP5 | |
1024 | PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1*b1 | |
1025 | PCLMULQDQ 0x00, \TMP5, \XMM3 # XMM3 = a0*b0 | |
1026 | movdqa HashKey_2_k(%rsp), \TMP4 | |
1027 | PCLMULQDQ 0x00, \TMP4, \TMP2 # TMP2 = (a1+a0)*(b1+b0) | |
1028 | pxor \TMP1, \TMP6 | |
1029 | pxor \XMM3, \XMMDst | |
1030 | pxor \TMP2, \XMM1 # results accumulated in TMP6, XMMDst, XMM1 | |
1031 | ||
1032 | # Multiply TMP1 * HashKey (using Karatsuba) | |
1033 | movdqa \XMM4, \TMP1 | |
1034 | pshufd $78, \XMM4, \TMP2 | |
1035 | pxor \XMM4, \TMP2 | |
1036 | movdqa HashKey(%rsp), \TMP5 | |
1037 | PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1*b1 | |
1038 | PCLMULQDQ 0x00, \TMP5, \XMM4 # XMM4 = a0*b0 | |
1039 | movdqa HashKey_k(%rsp), \TMP4 | |
1040 | PCLMULQDQ 0x00, \TMP4, \TMP2 # TMP2 = (a1+a0)*(b1+b0) | |
1041 | pxor \TMP1, \TMP6 | |
1042 | pxor \XMM4, \XMMDst | |
1043 | pxor \XMM1, \TMP2 | |
1044 | pxor \TMP6, \TMP2 | |
1045 | pxor \XMMDst, \TMP2 | |
1046 | # middle section of the temp results combined as in karatsuba algorithm | |
1047 | movdqa \TMP2, \TMP4 | |
1048 | pslldq $8, \TMP4 # left shift TMP4 2 DWs | |
1049 | psrldq $8, \TMP2 # right shift TMP2 2 DWs | |
1050 | pxor \TMP4, \XMMDst | |
1051 | pxor \TMP2, \TMP6 | |
1052 | # TMP6:XMMDst holds the result of the accumulated carry-less multiplications | |
1053 | # first phase of the reduction | |
1054 | movdqa \XMMDst, \TMP2 | |
1055 | movdqa \XMMDst, \TMP3 | |
1056 | movdqa \XMMDst, \TMP4 | |
1057 | # move XMMDst into TMP2, TMP3, TMP4 in order to perform 3 shifts independently | |
1058 | pslld $31, \TMP2 # packed right shifting << 31 | |
1059 | pslld $30, \TMP3 # packed right shifting << 30 | |
1060 | pslld $25, \TMP4 # packed right shifting << 25 | |
1061 | pxor \TMP3, \TMP2 # xor the shifted versions | |
1062 | pxor \TMP4, \TMP2 | |
1063 | movdqa \TMP2, \TMP7 | |
1064 | psrldq $4, \TMP7 # right shift TMP7 1 DW | |
1065 | pslldq $12, \TMP2 # left shift TMP2 3 DWs | |
1066 | pxor \TMP2, \XMMDst | |
1067 | ||
1068 | # second phase of the reduction | |
1069 | movdqa \XMMDst, \TMP2 | |
1070 | # make 3 copies of XMMDst for doing 3 shift operations | |
1071 | movdqa \XMMDst, \TMP3 | |
1072 | movdqa \XMMDst, \TMP4 | |
1073 | psrld $1, \TMP2 # packed left shift >> 1 | |
1074 | psrld $2, \TMP3 # packed left shift >> 2 | |
1075 | psrld $7, \TMP4 # packed left shift >> 7 | |
1076 | pxor \TMP3, \TMP2 # xor the shifted versions | |
1077 | pxor \TMP4, \TMP2 | |
1078 | pxor \TMP7, \TMP2 | |
1079 | pxor \TMP2, \XMMDst | |
1080 | pxor \TMP6, \XMMDst # reduced result is in XMMDst | |
1081 | .endm | |
1082 | ||
0bd82f5f | 1083 | |
e31ac32d TM |
1084 | /* Encryption of a single block |
1085 | * uses eax & r10 | |
1086 | */ | |
0bd82f5f | 1087 | |
e31ac32d | 1088 | .macro ENCRYPT_SINGLE_BLOCK XMM0 TMP1 |
0bd82f5f | 1089 | |
e31ac32d TM |
1090 | pxor (%arg1), \XMM0 |
1091 | mov keysize,%eax | |
1092 | shr $2,%eax # 128->4, 192->6, 256->8 | |
1093 | add $5,%eax # 128->9, 192->11, 256->13 | |
1094 | lea 16(%arg1), %r10 # get first expanded key address | |
1095 | ||
1096 | _esb_loop_\@: | |
1097 | MOVADQ (%r10),\TMP1 | |
1098 | AESENC \TMP1,\XMM0 | |
1099 | add $16,%r10 | |
1100 | sub $1,%eax | |
1101 | jnz _esb_loop_\@ | |
1102 | ||
1103 | MOVADQ (%r10),\TMP1 | |
1104 | AESENCLAST \TMP1,\XMM0 | |
1105 | .endm | |
0bd82f5f TS |
1106 | /***************************************************************************** |
1107 | * void aesni_gcm_dec(void *aes_ctx, // AES Key schedule. Starts on a 16 byte boundary. | |
1108 | * u8 *out, // Plaintext output. Encrypt in-place is allowed. | |
1109 | * const u8 *in, // Ciphertext input | |
1110 | * u64 plaintext_len, // Length of data in bytes for decryption. | |
1111 | * u8 *iv, // Pre-counter block j0: 4 byte salt (from Security Association) | |
1112 | * // concatenated with 8 byte Initialisation Vector (from IPSec ESP Payload) | |
1113 | * // concatenated with 0x00000001. 16-byte aligned pointer. | |
1114 | * u8 *hash_subkey, // H, the Hash sub key input. Data starts on a 16-byte boundary. | |
1115 | * const u8 *aad, // Additional Authentication Data (AAD) | |
1116 | * u64 aad_len, // Length of AAD in bytes. With RFC4106 this is going to be 8 or 12 bytes | |
1117 | * u8 *auth_tag, // Authenticated Tag output. The driver will compare this to the | |
1118 | * // given authentication tag and only return the plaintext if they match. | |
1119 | * u64 auth_tag_len); // Authenticated Tag Length in bytes. Valid values are 16 | |
1120 | * // (most likely), 12 or 8. | |
1121 | * | |
1122 | * Assumptions: | |
1123 | * | |
1124 | * keys: | |
1125 | * keys are pre-expanded and aligned to 16 bytes. we are using the first | |
1126 | * set of 11 keys in the data structure void *aes_ctx | |
1127 | * | |
1128 | * iv: | |
1129 | * 0 1 2 3 | |
1130 | * 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 | |
1131 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1132 | * | Salt (From the SA) | | |
1133 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1134 | * | Initialization Vector | | |
1135 | * | (This is the sequence number from IPSec header) | | |
1136 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1137 | * | 0x1 | | |
1138 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1139 | * | |
1140 | * | |
1141 | * | |
1142 | * AAD: | |
1143 | * AAD padded to 128 bits with 0 | |
1144 | * for example, assume AAD is a u32 vector | |
1145 | * | |
1146 | * if AAD is 8 bytes: | |
1147 | * AAD[3] = {A0, A1}; | |
1148 | * padded AAD in xmm register = {A1 A0 0 0} | |
1149 | * | |
1150 | * 0 1 2 3 | |
1151 | * 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 | |
1152 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1153 | * | SPI (A1) | | |
1154 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1155 | * | 32-bit Sequence Number (A0) | | |
1156 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1157 | * | 0x0 | | |
1158 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1159 | * | |
1160 | * AAD Format with 32-bit Sequence Number | |
1161 | * | |
1162 | * if AAD is 12 bytes: | |
1163 | * AAD[3] = {A0, A1, A2}; | |
1164 | * padded AAD in xmm register = {A2 A1 A0 0} | |
1165 | * | |
1166 | * 0 1 2 3 | |
1167 | * 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 | |
1168 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1169 | * 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 | |
1170 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1171 | * | SPI (A2) | | |
1172 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1173 | * | 64-bit Extended Sequence Number {A1,A0} | | |
1174 | * | | | |
1175 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1176 | * | 0x0 | | |
1177 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1178 | * | |
1179 | * AAD Format with 64-bit Extended Sequence Number | |
1180 | * | |
0bd82f5f TS |
1181 | * poly = x^128 + x^127 + x^126 + x^121 + 1 |
1182 | * | |
1183 | *****************************************************************************/ | |
0bd82f5f | 1184 | ENTRY(aesni_gcm_dec) |
6c2c86b3 | 1185 | FUNC_SAVE |
0bd82f5f | 1186 | |
7af964c2 | 1187 | GCM_INIT |
0bd82f5f TS |
1188 | |
1189 | # Decrypt first few blocks | |
1190 | ||
0bd82f5f TS |
1191 | and $(3<<4), %r12 |
1192 | jz _initial_num_blocks_is_0_decrypt | |
1193 | cmp $(2<<4), %r12 | |
1194 | jb _initial_num_blocks_is_1_decrypt | |
1195 | je _initial_num_blocks_is_2_decrypt | |
1196 | _initial_num_blocks_is_3_decrypt: | |
e1fd316f | 1197 | INITIAL_BLOCKS_ENC_DEC %xmm9, %xmm10, %xmm13, %xmm11, %xmm12, %xmm0, \ |
0bd82f5f TS |
1198 | %xmm1, %xmm2, %xmm3, %xmm4, %xmm8, %xmm5, %xmm6, 5, 678, dec |
1199 | sub $48, %r13 | |
1200 | jmp _initial_blocks_decrypted | |
1201 | _initial_num_blocks_is_2_decrypt: | |
e1fd316f | 1202 | INITIAL_BLOCKS_ENC_DEC %xmm9, %xmm10, %xmm13, %xmm11, %xmm12, %xmm0, \ |
0bd82f5f TS |
1203 | %xmm1, %xmm2, %xmm3, %xmm4, %xmm8, %xmm5, %xmm6, 6, 78, dec |
1204 | sub $32, %r13 | |
1205 | jmp _initial_blocks_decrypted | |
1206 | _initial_num_blocks_is_1_decrypt: | |
e1fd316f | 1207 | INITIAL_BLOCKS_ENC_DEC %xmm9, %xmm10, %xmm13, %xmm11, %xmm12, %xmm0, \ |
0bd82f5f TS |
1208 | %xmm1, %xmm2, %xmm3, %xmm4, %xmm8, %xmm5, %xmm6, 7, 8, dec |
1209 | sub $16, %r13 | |
1210 | jmp _initial_blocks_decrypted | |
1211 | _initial_num_blocks_is_0_decrypt: | |
e1fd316f | 1212 | INITIAL_BLOCKS_ENC_DEC %xmm9, %xmm10, %xmm13, %xmm11, %xmm12, %xmm0, \ |
0bd82f5f TS |
1213 | %xmm1, %xmm2, %xmm3, %xmm4, %xmm8, %xmm5, %xmm6, 8, 0, dec |
1214 | _initial_blocks_decrypted: | |
1215 | cmp $0, %r13 | |
1216 | je _zero_cipher_left_decrypt | |
1217 | sub $64, %r13 | |
1218 | je _four_cipher_left_decrypt | |
1219 | _decrypt_by_4: | |
3c097b80 | 1220 | GHASH_4_ENCRYPT_4_PARALLEL_DEC %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, \ |
0bd82f5f TS |
1221 | %xmm14, %xmm0, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7, %xmm8, dec |
1222 | add $64, %r11 | |
1223 | sub $64, %r13 | |
1224 | jne _decrypt_by_4 | |
1225 | _four_cipher_left_decrypt: | |
1226 | GHASH_LAST_4 %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14, \ | |
1227 | %xmm15, %xmm1, %xmm2, %xmm3, %xmm4, %xmm8 | |
1228 | _zero_cipher_left_decrypt: | |
1229 | mov %arg4, %r13 | |
1230 | and $15, %r13 # %r13 = arg4 (mod 16) | |
1231 | je _multiple_of_16_bytes_decrypt | |
1232 | ||
0d2eb44f | 1233 | # Handle the last <16 byte block separately |
0bd82f5f TS |
1234 | |
1235 | paddd ONE(%rip), %xmm0 # increment CNT to get Yn | |
3c097b80 TS |
1236 | movdqa SHUF_MASK(%rip), %xmm10 |
1237 | PSHUFB_XMM %xmm10, %xmm0 | |
1238 | ||
0bd82f5f | 1239 | ENCRYPT_SINGLE_BLOCK %xmm0, %xmm1 # E(K, Yn) |
3c097b80 | 1240 | |
b20209c9 JS |
1241 | lea (%arg3,%r11,1), %r10 |
1242 | mov %r13, %r12 | |
1243 | READ_PARTIAL_BLOCK %r10 %r12 %xmm2 %xmm1 | |
1244 | ||
1245 | lea ALL_F+16(%rip), %r12 | |
1246 | sub %r13, %r12 | |
0bd82f5f TS |
1247 | movdqa %xmm1, %xmm2 |
1248 | pxor %xmm1, %xmm0 # Ciphertext XOR E(K, Yn) | |
b20209c9 | 1249 | movdqu (%r12), %xmm1 |
0bd82f5f TS |
1250 | # get the appropriate mask to mask out top 16-%r13 bytes of %xmm0 |
1251 | pand %xmm1, %xmm0 # mask out top 16-%r13 bytes of %xmm0 | |
1252 | pand %xmm1, %xmm2 | |
3c097b80 TS |
1253 | movdqa SHUF_MASK(%rip), %xmm10 |
1254 | PSHUFB_XMM %xmm10 ,%xmm2 | |
1255 | ||
0bd82f5f TS |
1256 | pxor %xmm2, %xmm8 |
1257 | GHASH_MUL %xmm8, %xmm13, %xmm9, %xmm10, %xmm11, %xmm5, %xmm6 | |
0bd82f5f TS |
1258 | |
1259 | # output %r13 bytes | |
3c097b80 | 1260 | MOVQ_R64_XMM %xmm0, %rax |
0bd82f5f TS |
1261 | cmp $8, %r13 |
1262 | jle _less_than_8_bytes_left_decrypt | |
1263 | mov %rax, (%arg2 , %r11, 1) | |
1264 | add $8, %r11 | |
1265 | psrldq $8, %xmm0 | |
3c097b80 | 1266 | MOVQ_R64_XMM %xmm0, %rax |
0bd82f5f TS |
1267 | sub $8, %r13 |
1268 | _less_than_8_bytes_left_decrypt: | |
1269 | mov %al, (%arg2, %r11, 1) | |
1270 | add $1, %r11 | |
1271 | shr $8, %rax | |
1272 | sub $1, %r13 | |
1273 | jne _less_than_8_bytes_left_decrypt | |
1274 | _multiple_of_16_bytes_decrypt: | |
1275 | mov arg8, %r12 # %r13 = aadLen (number of bytes) | |
1276 | shl $3, %r12 # convert into number of bits | |
1277 | movd %r12d, %xmm15 # len(A) in %xmm15 | |
1278 | shl $3, %arg4 # len(C) in bits (*128) | |
3c097b80 | 1279 | MOVQ_R64_XMM %arg4, %xmm1 |
0bd82f5f TS |
1280 | pslldq $8, %xmm15 # %xmm15 = len(A)||0x0000000000000000 |
1281 | pxor %xmm1, %xmm15 # %xmm15 = len(A)||len(C) | |
1282 | pxor %xmm15, %xmm8 | |
1283 | GHASH_MUL %xmm8, %xmm13, %xmm9, %xmm10, %xmm11, %xmm5, %xmm6 | |
1284 | # final GHASH computation | |
3c097b80 TS |
1285 | movdqa SHUF_MASK(%rip), %xmm10 |
1286 | PSHUFB_XMM %xmm10, %xmm8 | |
1287 | ||
0bd82f5f TS |
1288 | mov %arg5, %rax # %rax = *Y0 |
1289 | movdqu (%rax), %xmm0 # %xmm0 = Y0 | |
1290 | ENCRYPT_SINGLE_BLOCK %xmm0, %xmm1 # E(K, Y0) | |
1291 | pxor %xmm8, %xmm0 | |
1292 | _return_T_decrypt: | |
1293 | mov arg9, %r10 # %r10 = authTag | |
1294 | mov arg10, %r11 # %r11 = auth_tag_len | |
1295 | cmp $16, %r11 | |
1296 | je _T_16_decrypt | |
38d9deec SD |
1297 | cmp $8, %r11 |
1298 | jl _T_4_decrypt | |
0bd82f5f | 1299 | _T_8_decrypt: |
3c097b80 | 1300 | MOVQ_R64_XMM %xmm0, %rax |
0bd82f5f | 1301 | mov %rax, (%r10) |
38d9deec SD |
1302 | add $8, %r10 |
1303 | sub $8, %r11 | |
0bd82f5f | 1304 | psrldq $8, %xmm0 |
38d9deec SD |
1305 | cmp $0, %r11 |
1306 | je _return_T_done_decrypt | |
1307 | _T_4_decrypt: | |
1308 | movd %xmm0, %eax | |
1309 | mov %eax, (%r10) | |
1310 | add $4, %r10 | |
1311 | sub $4, %r11 | |
1312 | psrldq $4, %xmm0 | |
1313 | cmp $0, %r11 | |
1314 | je _return_T_done_decrypt | |
1315 | _T_123_decrypt: | |
0bd82f5f | 1316 | movd %xmm0, %eax |
38d9deec SD |
1317 | cmp $2, %r11 |
1318 | jl _T_1_decrypt | |
1319 | mov %ax, (%r10) | |
1320 | cmp $2, %r11 | |
1321 | je _return_T_done_decrypt | |
1322 | add $2, %r10 | |
1323 | sar $16, %eax | |
1324 | _T_1_decrypt: | |
1325 | mov %al, (%r10) | |
0bd82f5f TS |
1326 | jmp _return_T_done_decrypt |
1327 | _T_16_decrypt: | |
1328 | movdqu %xmm0, (%r10) | |
1329 | _return_T_done_decrypt: | |
6c2c86b3 | 1330 | FUNC_RESTORE |
0bd82f5f | 1331 | ret |
8309b745 | 1332 | ENDPROC(aesni_gcm_dec) |
0bd82f5f TS |
1333 | |
1334 | ||
1335 | /***************************************************************************** | |
1336 | * void aesni_gcm_enc(void *aes_ctx, // AES Key schedule. Starts on a 16 byte boundary. | |
1337 | * u8 *out, // Ciphertext output. Encrypt in-place is allowed. | |
1338 | * const u8 *in, // Plaintext input | |
1339 | * u64 plaintext_len, // Length of data in bytes for encryption. | |
1340 | * u8 *iv, // Pre-counter block j0: 4 byte salt (from Security Association) | |
1341 | * // concatenated with 8 byte Initialisation Vector (from IPSec ESP Payload) | |
1342 | * // concatenated with 0x00000001. 16-byte aligned pointer. | |
1343 | * u8 *hash_subkey, // H, the Hash sub key input. Data starts on a 16-byte boundary. | |
1344 | * const u8 *aad, // Additional Authentication Data (AAD) | |
1345 | * u64 aad_len, // Length of AAD in bytes. With RFC4106 this is going to be 8 or 12 bytes | |
1346 | * u8 *auth_tag, // Authenticated Tag output. | |
1347 | * u64 auth_tag_len); // Authenticated Tag Length in bytes. Valid values are 16 (most likely), | |
1348 | * // 12 or 8. | |
1349 | * | |
1350 | * Assumptions: | |
1351 | * | |
1352 | * keys: | |
1353 | * keys are pre-expanded and aligned to 16 bytes. we are using the | |
1354 | * first set of 11 keys in the data structure void *aes_ctx | |
1355 | * | |
1356 | * | |
1357 | * iv: | |
1358 | * 0 1 2 3 | |
1359 | * 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 | |
1360 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1361 | * | Salt (From the SA) | | |
1362 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1363 | * | Initialization Vector | | |
1364 | * | (This is the sequence number from IPSec header) | | |
1365 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1366 | * | 0x1 | | |
1367 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1368 | * | |
1369 | * | |
1370 | * | |
1371 | * AAD: | |
1372 | * AAD padded to 128 bits with 0 | |
1373 | * for example, assume AAD is a u32 vector | |
1374 | * | |
1375 | * if AAD is 8 bytes: | |
1376 | * AAD[3] = {A0, A1}; | |
1377 | * padded AAD in xmm register = {A1 A0 0 0} | |
1378 | * | |
1379 | * 0 1 2 3 | |
1380 | * 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 | |
1381 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1382 | * | SPI (A1) | | |
1383 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1384 | * | 32-bit Sequence Number (A0) | | |
1385 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1386 | * | 0x0 | | |
1387 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1388 | * | |
1389 | * AAD Format with 32-bit Sequence Number | |
1390 | * | |
1391 | * if AAD is 12 bytes: | |
1392 | * AAD[3] = {A0, A1, A2}; | |
1393 | * padded AAD in xmm register = {A2 A1 A0 0} | |
1394 | * | |
1395 | * 0 1 2 3 | |
1396 | * 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 | |
1397 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1398 | * | SPI (A2) | | |
1399 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1400 | * | 64-bit Extended Sequence Number {A1,A0} | | |
1401 | * | | | |
1402 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1403 | * | 0x0 | | |
1404 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1405 | * | |
1406 | * AAD Format with 64-bit Extended Sequence Number | |
1407 | * | |
0bd82f5f TS |
1408 | * poly = x^128 + x^127 + x^126 + x^121 + 1 |
1409 | ***************************************************************************/ | |
1410 | ENTRY(aesni_gcm_enc) | |
6c2c86b3 | 1411 | FUNC_SAVE |
0bd82f5f | 1412 | |
7af964c2 | 1413 | GCM_INIT |
0bd82f5f TS |
1414 | # Encrypt first few blocks |
1415 | ||
1416 | and $(3<<4), %r12 | |
1417 | jz _initial_num_blocks_is_0_encrypt | |
1418 | cmp $(2<<4), %r12 | |
1419 | jb _initial_num_blocks_is_1_encrypt | |
1420 | je _initial_num_blocks_is_2_encrypt | |
1421 | _initial_num_blocks_is_3_encrypt: | |
e1fd316f | 1422 | INITIAL_BLOCKS_ENC_DEC %xmm9, %xmm10, %xmm13, %xmm11, %xmm12, %xmm0, \ |
0bd82f5f TS |
1423 | %xmm1, %xmm2, %xmm3, %xmm4, %xmm8, %xmm5, %xmm6, 5, 678, enc |
1424 | sub $48, %r13 | |
1425 | jmp _initial_blocks_encrypted | |
1426 | _initial_num_blocks_is_2_encrypt: | |
e1fd316f | 1427 | INITIAL_BLOCKS_ENC_DEC %xmm9, %xmm10, %xmm13, %xmm11, %xmm12, %xmm0, \ |
0bd82f5f TS |
1428 | %xmm1, %xmm2, %xmm3, %xmm4, %xmm8, %xmm5, %xmm6, 6, 78, enc |
1429 | sub $32, %r13 | |
1430 | jmp _initial_blocks_encrypted | |
1431 | _initial_num_blocks_is_1_encrypt: | |
e1fd316f | 1432 | INITIAL_BLOCKS_ENC_DEC %xmm9, %xmm10, %xmm13, %xmm11, %xmm12, %xmm0, \ |
0bd82f5f TS |
1433 | %xmm1, %xmm2, %xmm3, %xmm4, %xmm8, %xmm5, %xmm6, 7, 8, enc |
1434 | sub $16, %r13 | |
1435 | jmp _initial_blocks_encrypted | |
1436 | _initial_num_blocks_is_0_encrypt: | |
e1fd316f | 1437 | INITIAL_BLOCKS_ENC_DEC %xmm9, %xmm10, %xmm13, %xmm11, %xmm12, %xmm0, \ |
0bd82f5f TS |
1438 | %xmm1, %xmm2, %xmm3, %xmm4, %xmm8, %xmm5, %xmm6, 8, 0, enc |
1439 | _initial_blocks_encrypted: | |
1440 | ||
1441 | # Main loop - Encrypt remaining blocks | |
1442 | ||
1443 | cmp $0, %r13 | |
1444 | je _zero_cipher_left_encrypt | |
1445 | sub $64, %r13 | |
1446 | je _four_cipher_left_encrypt | |
1447 | _encrypt_by_4_encrypt: | |
3c097b80 | 1448 | GHASH_4_ENCRYPT_4_PARALLEL_ENC %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, \ |
0bd82f5f TS |
1449 | %xmm14, %xmm0, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7, %xmm8, enc |
1450 | add $64, %r11 | |
1451 | sub $64, %r13 | |
1452 | jne _encrypt_by_4_encrypt | |
1453 | _four_cipher_left_encrypt: | |
1454 | GHASH_LAST_4 %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14, \ | |
1455 | %xmm15, %xmm1, %xmm2, %xmm3, %xmm4, %xmm8 | |
1456 | _zero_cipher_left_encrypt: | |
1457 | mov %arg4, %r13 | |
1458 | and $15, %r13 # %r13 = arg4 (mod 16) | |
1459 | je _multiple_of_16_bytes_encrypt | |
1460 | ||
0d2eb44f | 1461 | # Handle the last <16 Byte block separately |
0bd82f5f | 1462 | paddd ONE(%rip), %xmm0 # INCR CNT to get Yn |
3c097b80 TS |
1463 | movdqa SHUF_MASK(%rip), %xmm10 |
1464 | PSHUFB_XMM %xmm10, %xmm0 | |
1465 | ||
0bd82f5f | 1466 | ENCRYPT_SINGLE_BLOCK %xmm0, %xmm1 # Encrypt(K, Yn) |
b20209c9 JS |
1467 | |
1468 | lea (%arg3,%r11,1), %r10 | |
1469 | mov %r13, %r12 | |
1470 | READ_PARTIAL_BLOCK %r10 %r12 %xmm2 %xmm1 | |
1471 | ||
1472 | lea ALL_F+16(%rip), %r12 | |
0bd82f5f | 1473 | sub %r13, %r12 |
0bd82f5f | 1474 | pxor %xmm1, %xmm0 # Plaintext XOR Encrypt(K, Yn) |
b20209c9 | 1475 | movdqu (%r12), %xmm1 |
0bd82f5f TS |
1476 | # get the appropriate mask to mask out top 16-r13 bytes of xmm0 |
1477 | pand %xmm1, %xmm0 # mask out top 16-r13 bytes of xmm0 | |
3c097b80 TS |
1478 | movdqa SHUF_MASK(%rip), %xmm10 |
1479 | PSHUFB_XMM %xmm10,%xmm0 | |
0bd82f5f | 1480 | |
0bd82f5f TS |
1481 | pxor %xmm0, %xmm8 |
1482 | GHASH_MUL %xmm8, %xmm13, %xmm9, %xmm10, %xmm11, %xmm5, %xmm6 | |
1483 | # GHASH computation for the last <16 byte block | |
60af520c TS |
1484 | movdqa SHUF_MASK(%rip), %xmm10 |
1485 | PSHUFB_XMM %xmm10, %xmm0 | |
3c097b80 | 1486 | |
0bd82f5f TS |
1487 | # shuffle xmm0 back to output as ciphertext |
1488 | ||
1489 | # Output %r13 bytes | |
3c097b80 | 1490 | MOVQ_R64_XMM %xmm0, %rax |
0bd82f5f TS |
1491 | cmp $8, %r13 |
1492 | jle _less_than_8_bytes_left_encrypt | |
1493 | mov %rax, (%arg2 , %r11, 1) | |
1494 | add $8, %r11 | |
1495 | psrldq $8, %xmm0 | |
3c097b80 | 1496 | MOVQ_R64_XMM %xmm0, %rax |
0bd82f5f TS |
1497 | sub $8, %r13 |
1498 | _less_than_8_bytes_left_encrypt: | |
1499 | mov %al, (%arg2, %r11, 1) | |
1500 | add $1, %r11 | |
1501 | shr $8, %rax | |
1502 | sub $1, %r13 | |
1503 | jne _less_than_8_bytes_left_encrypt | |
1504 | _multiple_of_16_bytes_encrypt: | |
1505 | mov arg8, %r12 # %r12 = addLen (number of bytes) | |
1506 | shl $3, %r12 | |
1507 | movd %r12d, %xmm15 # len(A) in %xmm15 | |
1508 | shl $3, %arg4 # len(C) in bits (*128) | |
3c097b80 | 1509 | MOVQ_R64_XMM %arg4, %xmm1 |
0bd82f5f TS |
1510 | pslldq $8, %xmm15 # %xmm15 = len(A)||0x0000000000000000 |
1511 | pxor %xmm1, %xmm15 # %xmm15 = len(A)||len(C) | |
1512 | pxor %xmm15, %xmm8 | |
1513 | GHASH_MUL %xmm8, %xmm13, %xmm9, %xmm10, %xmm11, %xmm5, %xmm6 | |
1514 | # final GHASH computation | |
3c097b80 TS |
1515 | movdqa SHUF_MASK(%rip), %xmm10 |
1516 | PSHUFB_XMM %xmm10, %xmm8 # perform a 16 byte swap | |
0bd82f5f | 1517 | |
0bd82f5f TS |
1518 | mov %arg5, %rax # %rax = *Y0 |
1519 | movdqu (%rax), %xmm0 # %xmm0 = Y0 | |
1520 | ENCRYPT_SINGLE_BLOCK %xmm0, %xmm15 # Encrypt(K, Y0) | |
1521 | pxor %xmm8, %xmm0 | |
1522 | _return_T_encrypt: | |
1523 | mov arg9, %r10 # %r10 = authTag | |
1524 | mov arg10, %r11 # %r11 = auth_tag_len | |
1525 | cmp $16, %r11 | |
1526 | je _T_16_encrypt | |
38d9deec SD |
1527 | cmp $8, %r11 |
1528 | jl _T_4_encrypt | |
0bd82f5f | 1529 | _T_8_encrypt: |
3c097b80 | 1530 | MOVQ_R64_XMM %xmm0, %rax |
0bd82f5f | 1531 | mov %rax, (%r10) |
38d9deec SD |
1532 | add $8, %r10 |
1533 | sub $8, %r11 | |
0bd82f5f | 1534 | psrldq $8, %xmm0 |
38d9deec SD |
1535 | cmp $0, %r11 |
1536 | je _return_T_done_encrypt | |
1537 | _T_4_encrypt: | |
1538 | movd %xmm0, %eax | |
1539 | mov %eax, (%r10) | |
1540 | add $4, %r10 | |
1541 | sub $4, %r11 | |
1542 | psrldq $4, %xmm0 | |
1543 | cmp $0, %r11 | |
1544 | je _return_T_done_encrypt | |
1545 | _T_123_encrypt: | |
0bd82f5f | 1546 | movd %xmm0, %eax |
38d9deec SD |
1547 | cmp $2, %r11 |
1548 | jl _T_1_encrypt | |
1549 | mov %ax, (%r10) | |
1550 | cmp $2, %r11 | |
1551 | je _return_T_done_encrypt | |
1552 | add $2, %r10 | |
1553 | sar $16, %eax | |
1554 | _T_1_encrypt: | |
1555 | mov %al, (%r10) | |
0bd82f5f TS |
1556 | jmp _return_T_done_encrypt |
1557 | _T_16_encrypt: | |
1558 | movdqu %xmm0, (%r10) | |
1559 | _return_T_done_encrypt: | |
6c2c86b3 | 1560 | FUNC_RESTORE |
0bd82f5f | 1561 | ret |
8309b745 | 1562 | ENDPROC(aesni_gcm_enc) |
3c097b80 | 1563 | |
559ad0ff | 1564 | #endif |
0bd82f5f TS |
1565 | |
1566 | ||
8309b745 | 1567 | .align 4 |
54b6a1bd HY |
1568 | _key_expansion_128: |
1569 | _key_expansion_256a: | |
1570 | pshufd $0b11111111, %xmm1, %xmm1 | |
1571 | shufps $0b00010000, %xmm0, %xmm4 | |
1572 | pxor %xmm4, %xmm0 | |
1573 | shufps $0b10001100, %xmm0, %xmm4 | |
1574 | pxor %xmm4, %xmm0 | |
1575 | pxor %xmm1, %xmm0 | |
0d258efb MK |
1576 | movaps %xmm0, (TKEYP) |
1577 | add $0x10, TKEYP | |
54b6a1bd | 1578 | ret |
8309b745 JK |
1579 | ENDPROC(_key_expansion_128) |
1580 | ENDPROC(_key_expansion_256a) | |
54b6a1bd | 1581 | |
0d258efb | 1582 | .align 4 |
54b6a1bd HY |
1583 | _key_expansion_192a: |
1584 | pshufd $0b01010101, %xmm1, %xmm1 | |
1585 | shufps $0b00010000, %xmm0, %xmm4 | |
1586 | pxor %xmm4, %xmm0 | |
1587 | shufps $0b10001100, %xmm0, %xmm4 | |
1588 | pxor %xmm4, %xmm0 | |
1589 | pxor %xmm1, %xmm0 | |
1590 | ||
1591 | movaps %xmm2, %xmm5 | |
1592 | movaps %xmm2, %xmm6 | |
1593 | pslldq $4, %xmm5 | |
1594 | pshufd $0b11111111, %xmm0, %xmm3 | |
1595 | pxor %xmm3, %xmm2 | |
1596 | pxor %xmm5, %xmm2 | |
1597 | ||
1598 | movaps %xmm0, %xmm1 | |
1599 | shufps $0b01000100, %xmm0, %xmm6 | |
0d258efb | 1600 | movaps %xmm6, (TKEYP) |
54b6a1bd | 1601 | shufps $0b01001110, %xmm2, %xmm1 |
0d258efb MK |
1602 | movaps %xmm1, 0x10(TKEYP) |
1603 | add $0x20, TKEYP | |
54b6a1bd | 1604 | ret |
8309b745 | 1605 | ENDPROC(_key_expansion_192a) |
54b6a1bd | 1606 | |
0d258efb | 1607 | .align 4 |
54b6a1bd HY |
1608 | _key_expansion_192b: |
1609 | pshufd $0b01010101, %xmm1, %xmm1 | |
1610 | shufps $0b00010000, %xmm0, %xmm4 | |
1611 | pxor %xmm4, %xmm0 | |
1612 | shufps $0b10001100, %xmm0, %xmm4 | |
1613 | pxor %xmm4, %xmm0 | |
1614 | pxor %xmm1, %xmm0 | |
1615 | ||
1616 | movaps %xmm2, %xmm5 | |
1617 | pslldq $4, %xmm5 | |
1618 | pshufd $0b11111111, %xmm0, %xmm3 | |
1619 | pxor %xmm3, %xmm2 | |
1620 | pxor %xmm5, %xmm2 | |
1621 | ||
0d258efb MK |
1622 | movaps %xmm0, (TKEYP) |
1623 | add $0x10, TKEYP | |
54b6a1bd | 1624 | ret |
8309b745 | 1625 | ENDPROC(_key_expansion_192b) |
54b6a1bd | 1626 | |
0d258efb | 1627 | .align 4 |
54b6a1bd HY |
1628 | _key_expansion_256b: |
1629 | pshufd $0b10101010, %xmm1, %xmm1 | |
1630 | shufps $0b00010000, %xmm2, %xmm4 | |
1631 | pxor %xmm4, %xmm2 | |
1632 | shufps $0b10001100, %xmm2, %xmm4 | |
1633 | pxor %xmm4, %xmm2 | |
1634 | pxor %xmm1, %xmm2 | |
0d258efb MK |
1635 | movaps %xmm2, (TKEYP) |
1636 | add $0x10, TKEYP | |
54b6a1bd | 1637 | ret |
8309b745 | 1638 | ENDPROC(_key_expansion_256b) |
54b6a1bd HY |
1639 | |
1640 | /* | |
1641 | * int aesni_set_key(struct crypto_aes_ctx *ctx, const u8 *in_key, | |
1642 | * unsigned int key_len) | |
1643 | */ | |
1644 | ENTRY(aesni_set_key) | |
8691ccd7 | 1645 | FRAME_BEGIN |
0d258efb MK |
1646 | #ifndef __x86_64__ |
1647 | pushl KEYP | |
8691ccd7 JP |
1648 | movl (FRAME_OFFSET+8)(%esp), KEYP # ctx |
1649 | movl (FRAME_OFFSET+12)(%esp), UKEYP # in_key | |
1650 | movl (FRAME_OFFSET+16)(%esp), %edx # key_len | |
0d258efb MK |
1651 | #endif |
1652 | movups (UKEYP), %xmm0 # user key (first 16 bytes) | |
1653 | movaps %xmm0, (KEYP) | |
1654 | lea 0x10(KEYP), TKEYP # key addr | |
1655 | movl %edx, 480(KEYP) | |
54b6a1bd HY |
1656 | pxor %xmm4, %xmm4 # xmm4 is assumed 0 in _key_expansion_x |
1657 | cmp $24, %dl | |
1658 | jb .Lenc_key128 | |
1659 | je .Lenc_key192 | |
0d258efb MK |
1660 | movups 0x10(UKEYP), %xmm2 # other user key |
1661 | movaps %xmm2, (TKEYP) | |
1662 | add $0x10, TKEYP | |
b369e521 | 1663 | AESKEYGENASSIST 0x1 %xmm2 %xmm1 # round 1 |
54b6a1bd | 1664 | call _key_expansion_256a |
b369e521 | 1665 | AESKEYGENASSIST 0x1 %xmm0 %xmm1 |
54b6a1bd | 1666 | call _key_expansion_256b |
b369e521 | 1667 | AESKEYGENASSIST 0x2 %xmm2 %xmm1 # round 2 |
54b6a1bd | 1668 | call _key_expansion_256a |
b369e521 | 1669 | AESKEYGENASSIST 0x2 %xmm0 %xmm1 |
54b6a1bd | 1670 | call _key_expansion_256b |
b369e521 | 1671 | AESKEYGENASSIST 0x4 %xmm2 %xmm1 # round 3 |
54b6a1bd | 1672 | call _key_expansion_256a |
b369e521 | 1673 | AESKEYGENASSIST 0x4 %xmm0 %xmm1 |
54b6a1bd | 1674 | call _key_expansion_256b |
b369e521 | 1675 | AESKEYGENASSIST 0x8 %xmm2 %xmm1 # round 4 |
54b6a1bd | 1676 | call _key_expansion_256a |
b369e521 | 1677 | AESKEYGENASSIST 0x8 %xmm0 %xmm1 |
54b6a1bd | 1678 | call _key_expansion_256b |
b369e521 | 1679 | AESKEYGENASSIST 0x10 %xmm2 %xmm1 # round 5 |
54b6a1bd | 1680 | call _key_expansion_256a |
b369e521 | 1681 | AESKEYGENASSIST 0x10 %xmm0 %xmm1 |
54b6a1bd | 1682 | call _key_expansion_256b |
b369e521 | 1683 | AESKEYGENASSIST 0x20 %xmm2 %xmm1 # round 6 |
54b6a1bd | 1684 | call _key_expansion_256a |
b369e521 | 1685 | AESKEYGENASSIST 0x20 %xmm0 %xmm1 |
54b6a1bd | 1686 | call _key_expansion_256b |
b369e521 | 1687 | AESKEYGENASSIST 0x40 %xmm2 %xmm1 # round 7 |
54b6a1bd HY |
1688 | call _key_expansion_256a |
1689 | jmp .Ldec_key | |
1690 | .Lenc_key192: | |
0d258efb | 1691 | movq 0x10(UKEYP), %xmm2 # other user key |
b369e521 | 1692 | AESKEYGENASSIST 0x1 %xmm2 %xmm1 # round 1 |
54b6a1bd | 1693 | call _key_expansion_192a |
b369e521 | 1694 | AESKEYGENASSIST 0x2 %xmm2 %xmm1 # round 2 |
54b6a1bd | 1695 | call _key_expansion_192b |
b369e521 | 1696 | AESKEYGENASSIST 0x4 %xmm2 %xmm1 # round 3 |
54b6a1bd | 1697 | call _key_expansion_192a |
b369e521 | 1698 | AESKEYGENASSIST 0x8 %xmm2 %xmm1 # round 4 |
54b6a1bd | 1699 | call _key_expansion_192b |
b369e521 | 1700 | AESKEYGENASSIST 0x10 %xmm2 %xmm1 # round 5 |
54b6a1bd | 1701 | call _key_expansion_192a |
b369e521 | 1702 | AESKEYGENASSIST 0x20 %xmm2 %xmm1 # round 6 |
54b6a1bd | 1703 | call _key_expansion_192b |
b369e521 | 1704 | AESKEYGENASSIST 0x40 %xmm2 %xmm1 # round 7 |
54b6a1bd | 1705 | call _key_expansion_192a |
b369e521 | 1706 | AESKEYGENASSIST 0x80 %xmm2 %xmm1 # round 8 |
54b6a1bd HY |
1707 | call _key_expansion_192b |
1708 | jmp .Ldec_key | |
1709 | .Lenc_key128: | |
b369e521 | 1710 | AESKEYGENASSIST 0x1 %xmm0 %xmm1 # round 1 |
54b6a1bd | 1711 | call _key_expansion_128 |
b369e521 | 1712 | AESKEYGENASSIST 0x2 %xmm0 %xmm1 # round 2 |
54b6a1bd | 1713 | call _key_expansion_128 |
b369e521 | 1714 | AESKEYGENASSIST 0x4 %xmm0 %xmm1 # round 3 |
54b6a1bd | 1715 | call _key_expansion_128 |
b369e521 | 1716 | AESKEYGENASSIST 0x8 %xmm0 %xmm1 # round 4 |
54b6a1bd | 1717 | call _key_expansion_128 |
b369e521 | 1718 | AESKEYGENASSIST 0x10 %xmm0 %xmm1 # round 5 |
54b6a1bd | 1719 | call _key_expansion_128 |
b369e521 | 1720 | AESKEYGENASSIST 0x20 %xmm0 %xmm1 # round 6 |
54b6a1bd | 1721 | call _key_expansion_128 |
b369e521 | 1722 | AESKEYGENASSIST 0x40 %xmm0 %xmm1 # round 7 |
54b6a1bd | 1723 | call _key_expansion_128 |
b369e521 | 1724 | AESKEYGENASSIST 0x80 %xmm0 %xmm1 # round 8 |
54b6a1bd | 1725 | call _key_expansion_128 |
b369e521 | 1726 | AESKEYGENASSIST 0x1b %xmm0 %xmm1 # round 9 |
54b6a1bd | 1727 | call _key_expansion_128 |
b369e521 | 1728 | AESKEYGENASSIST 0x36 %xmm0 %xmm1 # round 10 |
54b6a1bd HY |
1729 | call _key_expansion_128 |
1730 | .Ldec_key: | |
0d258efb MK |
1731 | sub $0x10, TKEYP |
1732 | movaps (KEYP), %xmm0 | |
1733 | movaps (TKEYP), %xmm1 | |
1734 | movaps %xmm0, 240(TKEYP) | |
1735 | movaps %xmm1, 240(KEYP) | |
1736 | add $0x10, KEYP | |
1737 | lea 240-16(TKEYP), UKEYP | |
54b6a1bd HY |
1738 | .align 4 |
1739 | .Ldec_key_loop: | |
0d258efb | 1740 | movaps (KEYP), %xmm0 |
b369e521 | 1741 | AESIMC %xmm0 %xmm1 |
0d258efb MK |
1742 | movaps %xmm1, (UKEYP) |
1743 | add $0x10, KEYP | |
1744 | sub $0x10, UKEYP | |
1745 | cmp TKEYP, KEYP | |
54b6a1bd | 1746 | jb .Ldec_key_loop |
0d258efb MK |
1747 | xor AREG, AREG |
1748 | #ifndef __x86_64__ | |
1749 | popl KEYP | |
1750 | #endif | |
8691ccd7 | 1751 | FRAME_END |
54b6a1bd | 1752 | ret |
8309b745 | 1753 | ENDPROC(aesni_set_key) |
54b6a1bd HY |
1754 | |
1755 | /* | |
1756 | * void aesni_enc(struct crypto_aes_ctx *ctx, u8 *dst, const u8 *src) | |
1757 | */ | |
1758 | ENTRY(aesni_enc) | |
8691ccd7 | 1759 | FRAME_BEGIN |
0d258efb MK |
1760 | #ifndef __x86_64__ |
1761 | pushl KEYP | |
1762 | pushl KLEN | |
8691ccd7 JP |
1763 | movl (FRAME_OFFSET+12)(%esp), KEYP # ctx |
1764 | movl (FRAME_OFFSET+16)(%esp), OUTP # dst | |
1765 | movl (FRAME_OFFSET+20)(%esp), INP # src | |
0d258efb | 1766 | #endif |
54b6a1bd HY |
1767 | movl 480(KEYP), KLEN # key length |
1768 | movups (INP), STATE # input | |
1769 | call _aesni_enc1 | |
1770 | movups STATE, (OUTP) # output | |
0d258efb MK |
1771 | #ifndef __x86_64__ |
1772 | popl KLEN | |
1773 | popl KEYP | |
1774 | #endif | |
8691ccd7 | 1775 | FRAME_END |
54b6a1bd | 1776 | ret |
8309b745 | 1777 | ENDPROC(aesni_enc) |
54b6a1bd HY |
1778 | |
1779 | /* | |
1780 | * _aesni_enc1: internal ABI | |
1781 | * input: | |
1782 | * KEYP: key struct pointer | |
1783 | * KLEN: round count | |
1784 | * STATE: initial state (input) | |
1785 | * output: | |
1786 | * STATE: finial state (output) | |
1787 | * changed: | |
1788 | * KEY | |
1789 | * TKEYP (T1) | |
1790 | */ | |
0d258efb | 1791 | .align 4 |
54b6a1bd HY |
1792 | _aesni_enc1: |
1793 | movaps (KEYP), KEY # key | |
1794 | mov KEYP, TKEYP | |
1795 | pxor KEY, STATE # round 0 | |
1796 | add $0x30, TKEYP | |
1797 | cmp $24, KLEN | |
1798 | jb .Lenc128 | |
1799 | lea 0x20(TKEYP), TKEYP | |
1800 | je .Lenc192 | |
1801 | add $0x20, TKEYP | |
1802 | movaps -0x60(TKEYP), KEY | |
b369e521 | 1803 | AESENC KEY STATE |
54b6a1bd | 1804 | movaps -0x50(TKEYP), KEY |
b369e521 | 1805 | AESENC KEY STATE |
54b6a1bd HY |
1806 | .align 4 |
1807 | .Lenc192: | |
1808 | movaps -0x40(TKEYP), KEY | |
b369e521 | 1809 | AESENC KEY STATE |
54b6a1bd | 1810 | movaps -0x30(TKEYP), KEY |
b369e521 | 1811 | AESENC KEY STATE |
54b6a1bd HY |
1812 | .align 4 |
1813 | .Lenc128: | |
1814 | movaps -0x20(TKEYP), KEY | |
b369e521 | 1815 | AESENC KEY STATE |
54b6a1bd | 1816 | movaps -0x10(TKEYP), KEY |
b369e521 | 1817 | AESENC KEY STATE |
54b6a1bd | 1818 | movaps (TKEYP), KEY |
b369e521 | 1819 | AESENC KEY STATE |
54b6a1bd | 1820 | movaps 0x10(TKEYP), KEY |
b369e521 | 1821 | AESENC KEY STATE |
54b6a1bd | 1822 | movaps 0x20(TKEYP), KEY |
b369e521 | 1823 | AESENC KEY STATE |
54b6a1bd | 1824 | movaps 0x30(TKEYP), KEY |
b369e521 | 1825 | AESENC KEY STATE |
54b6a1bd | 1826 | movaps 0x40(TKEYP), KEY |
b369e521 | 1827 | AESENC KEY STATE |
54b6a1bd | 1828 | movaps 0x50(TKEYP), KEY |
b369e521 | 1829 | AESENC KEY STATE |
54b6a1bd | 1830 | movaps 0x60(TKEYP), KEY |
b369e521 | 1831 | AESENC KEY STATE |
54b6a1bd | 1832 | movaps 0x70(TKEYP), KEY |
b369e521 | 1833 | AESENCLAST KEY STATE |
54b6a1bd | 1834 | ret |
8309b745 | 1835 | ENDPROC(_aesni_enc1) |
54b6a1bd HY |
1836 | |
1837 | /* | |
1838 | * _aesni_enc4: internal ABI | |
1839 | * input: | |
1840 | * KEYP: key struct pointer | |
1841 | * KLEN: round count | |
1842 | * STATE1: initial state (input) | |
1843 | * STATE2 | |
1844 | * STATE3 | |
1845 | * STATE4 | |
1846 | * output: | |
1847 | * STATE1: finial state (output) | |
1848 | * STATE2 | |
1849 | * STATE3 | |
1850 | * STATE4 | |
1851 | * changed: | |
1852 | * KEY | |
1853 | * TKEYP (T1) | |
1854 | */ | |
0d258efb | 1855 | .align 4 |
54b6a1bd HY |
1856 | _aesni_enc4: |
1857 | movaps (KEYP), KEY # key | |
1858 | mov KEYP, TKEYP | |
1859 | pxor KEY, STATE1 # round 0 | |
1860 | pxor KEY, STATE2 | |
1861 | pxor KEY, STATE3 | |
1862 | pxor KEY, STATE4 | |
1863 | add $0x30, TKEYP | |
1864 | cmp $24, KLEN | |
1865 | jb .L4enc128 | |
1866 | lea 0x20(TKEYP), TKEYP | |
1867 | je .L4enc192 | |
1868 | add $0x20, TKEYP | |
1869 | movaps -0x60(TKEYP), KEY | |
b369e521 HY |
1870 | AESENC KEY STATE1 |
1871 | AESENC KEY STATE2 | |
1872 | AESENC KEY STATE3 | |
1873 | AESENC KEY STATE4 | |
54b6a1bd | 1874 | movaps -0x50(TKEYP), KEY |
b369e521 HY |
1875 | AESENC KEY STATE1 |
1876 | AESENC KEY STATE2 | |
1877 | AESENC KEY STATE3 | |
1878 | AESENC KEY STATE4 | |
54b6a1bd HY |
1879 | #.align 4 |
1880 | .L4enc192: | |
1881 | movaps -0x40(TKEYP), KEY | |
b369e521 HY |
1882 | AESENC KEY STATE1 |
1883 | AESENC KEY STATE2 | |
1884 | AESENC KEY STATE3 | |
1885 | AESENC KEY STATE4 | |
54b6a1bd | 1886 | movaps -0x30(TKEYP), KEY |
b369e521 HY |
1887 | AESENC KEY STATE1 |
1888 | AESENC KEY STATE2 | |
1889 | AESENC KEY STATE3 | |
1890 | AESENC KEY STATE4 | |
54b6a1bd HY |
1891 | #.align 4 |
1892 | .L4enc128: | |
1893 | movaps -0x20(TKEYP), KEY | |
b369e521 HY |
1894 | AESENC KEY STATE1 |
1895 | AESENC KEY STATE2 | |
1896 | AESENC KEY STATE3 | |
1897 | AESENC KEY STATE4 | |
54b6a1bd | 1898 | movaps -0x10(TKEYP), KEY |
b369e521 HY |
1899 | AESENC KEY STATE1 |
1900 | AESENC KEY STATE2 | |
1901 | AESENC KEY STATE3 | |
1902 | AESENC KEY STATE4 | |
54b6a1bd | 1903 | movaps (TKEYP), KEY |
b369e521 HY |
1904 | AESENC KEY STATE1 |
1905 | AESENC KEY STATE2 | |
1906 | AESENC KEY STATE3 | |
1907 | AESENC KEY STATE4 | |
54b6a1bd | 1908 | movaps 0x10(TKEYP), KEY |
b369e521 HY |
1909 | AESENC KEY STATE1 |
1910 | AESENC KEY STATE2 | |
1911 | AESENC KEY STATE3 | |
1912 | AESENC KEY STATE4 | |
54b6a1bd | 1913 | movaps 0x20(TKEYP), KEY |
b369e521 HY |
1914 | AESENC KEY STATE1 |
1915 | AESENC KEY STATE2 | |
1916 | AESENC KEY STATE3 | |
1917 | AESENC KEY STATE4 | |
54b6a1bd | 1918 | movaps 0x30(TKEYP), KEY |
b369e521 HY |
1919 | AESENC KEY STATE1 |
1920 | AESENC KEY STATE2 | |
1921 | AESENC KEY STATE3 | |
1922 | AESENC KEY STATE4 | |
54b6a1bd | 1923 | movaps 0x40(TKEYP), KEY |
b369e521 HY |
1924 | AESENC KEY STATE1 |
1925 | AESENC KEY STATE2 | |
1926 | AESENC KEY STATE3 | |
1927 | AESENC KEY STATE4 | |
54b6a1bd | 1928 | movaps 0x50(TKEYP), KEY |
b369e521 HY |
1929 | AESENC KEY STATE1 |
1930 | AESENC KEY STATE2 | |
1931 | AESENC KEY STATE3 | |
1932 | AESENC KEY STATE4 | |
54b6a1bd | 1933 | movaps 0x60(TKEYP), KEY |
b369e521 HY |
1934 | AESENC KEY STATE1 |
1935 | AESENC KEY STATE2 | |
1936 | AESENC KEY STATE3 | |
1937 | AESENC KEY STATE4 | |
54b6a1bd | 1938 | movaps 0x70(TKEYP), KEY |
b369e521 HY |
1939 | AESENCLAST KEY STATE1 # last round |
1940 | AESENCLAST KEY STATE2 | |
1941 | AESENCLAST KEY STATE3 | |
1942 | AESENCLAST KEY STATE4 | |
54b6a1bd | 1943 | ret |
8309b745 | 1944 | ENDPROC(_aesni_enc4) |
54b6a1bd HY |
1945 | |
1946 | /* | |
1947 | * void aesni_dec (struct crypto_aes_ctx *ctx, u8 *dst, const u8 *src) | |
1948 | */ | |
1949 | ENTRY(aesni_dec) | |
8691ccd7 | 1950 | FRAME_BEGIN |
0d258efb MK |
1951 | #ifndef __x86_64__ |
1952 | pushl KEYP | |
1953 | pushl KLEN | |
8691ccd7 JP |
1954 | movl (FRAME_OFFSET+12)(%esp), KEYP # ctx |
1955 | movl (FRAME_OFFSET+16)(%esp), OUTP # dst | |
1956 | movl (FRAME_OFFSET+20)(%esp), INP # src | |
0d258efb | 1957 | #endif |
54b6a1bd HY |
1958 | mov 480(KEYP), KLEN # key length |
1959 | add $240, KEYP | |
1960 | movups (INP), STATE # input | |
1961 | call _aesni_dec1 | |
1962 | movups STATE, (OUTP) #output | |
0d258efb MK |
1963 | #ifndef __x86_64__ |
1964 | popl KLEN | |
1965 | popl KEYP | |
1966 | #endif | |
8691ccd7 | 1967 | FRAME_END |
54b6a1bd | 1968 | ret |
8309b745 | 1969 | ENDPROC(aesni_dec) |
54b6a1bd HY |
1970 | |
1971 | /* | |
1972 | * _aesni_dec1: internal ABI | |
1973 | * input: | |
1974 | * KEYP: key struct pointer | |
1975 | * KLEN: key length | |
1976 | * STATE: initial state (input) | |
1977 | * output: | |
1978 | * STATE: finial state (output) | |
1979 | * changed: | |
1980 | * KEY | |
1981 | * TKEYP (T1) | |
1982 | */ | |
0d258efb | 1983 | .align 4 |
54b6a1bd HY |
1984 | _aesni_dec1: |
1985 | movaps (KEYP), KEY # key | |
1986 | mov KEYP, TKEYP | |
1987 | pxor KEY, STATE # round 0 | |
1988 | add $0x30, TKEYP | |
1989 | cmp $24, KLEN | |
1990 | jb .Ldec128 | |
1991 | lea 0x20(TKEYP), TKEYP | |
1992 | je .Ldec192 | |
1993 | add $0x20, TKEYP | |
1994 | movaps -0x60(TKEYP), KEY | |
b369e521 | 1995 | AESDEC KEY STATE |
54b6a1bd | 1996 | movaps -0x50(TKEYP), KEY |
b369e521 | 1997 | AESDEC KEY STATE |
54b6a1bd HY |
1998 | .align 4 |
1999 | .Ldec192: | |
2000 | movaps -0x40(TKEYP), KEY | |
b369e521 | 2001 | AESDEC KEY STATE |
54b6a1bd | 2002 | movaps -0x30(TKEYP), KEY |
b369e521 | 2003 | AESDEC KEY STATE |
54b6a1bd HY |
2004 | .align 4 |
2005 | .Ldec128: | |
2006 | movaps -0x20(TKEYP), KEY | |
b369e521 | 2007 | AESDEC KEY STATE |
54b6a1bd | 2008 | movaps -0x10(TKEYP), KEY |
b369e521 | 2009 | AESDEC KEY STATE |
54b6a1bd | 2010 | movaps (TKEYP), KEY |
b369e521 | 2011 | AESDEC KEY STATE |
54b6a1bd | 2012 | movaps 0x10(TKEYP), KEY |
b369e521 | 2013 | AESDEC KEY STATE |
54b6a1bd | 2014 | movaps 0x20(TKEYP), KEY |
b369e521 | 2015 | AESDEC KEY STATE |
54b6a1bd | 2016 | movaps 0x30(TKEYP), KEY |
b369e521 | 2017 | AESDEC KEY STATE |
54b6a1bd | 2018 | movaps 0x40(TKEYP), KEY |
b369e521 | 2019 | AESDEC KEY STATE |
54b6a1bd | 2020 | movaps 0x50(TKEYP), KEY |
b369e521 | 2021 | AESDEC KEY STATE |
54b6a1bd | 2022 | movaps 0x60(TKEYP), KEY |
b369e521 | 2023 | AESDEC KEY STATE |
54b6a1bd | 2024 | movaps 0x70(TKEYP), KEY |
b369e521 | 2025 | AESDECLAST KEY STATE |
54b6a1bd | 2026 | ret |
8309b745 | 2027 | ENDPROC(_aesni_dec1) |
54b6a1bd HY |
2028 | |
2029 | /* | |
2030 | * _aesni_dec4: internal ABI | |
2031 | * input: | |
2032 | * KEYP: key struct pointer | |
2033 | * KLEN: key length | |
2034 | * STATE1: initial state (input) | |
2035 | * STATE2 | |
2036 | * STATE3 | |
2037 | * STATE4 | |
2038 | * output: | |
2039 | * STATE1: finial state (output) | |
2040 | * STATE2 | |
2041 | * STATE3 | |
2042 | * STATE4 | |
2043 | * changed: | |
2044 | * KEY | |
2045 | * TKEYP (T1) | |
2046 | */ | |
0d258efb | 2047 | .align 4 |
54b6a1bd HY |
2048 | _aesni_dec4: |
2049 | movaps (KEYP), KEY # key | |
2050 | mov KEYP, TKEYP | |
2051 | pxor KEY, STATE1 # round 0 | |
2052 | pxor KEY, STATE2 | |
2053 | pxor KEY, STATE3 | |
2054 | pxor KEY, STATE4 | |
2055 | add $0x30, TKEYP | |
2056 | cmp $24, KLEN | |
2057 | jb .L4dec128 | |
2058 | lea 0x20(TKEYP), TKEYP | |
2059 | je .L4dec192 | |
2060 | add $0x20, TKEYP | |
2061 | movaps -0x60(TKEYP), KEY | |
b369e521 HY |
2062 | AESDEC KEY STATE1 |
2063 | AESDEC KEY STATE2 | |
2064 | AESDEC KEY STATE3 | |
2065 | AESDEC KEY STATE4 | |
54b6a1bd | 2066 | movaps -0x50(TKEYP), KEY |
b369e521 HY |
2067 | AESDEC KEY STATE1 |
2068 | AESDEC KEY STATE2 | |
2069 | AESDEC KEY STATE3 | |
2070 | AESDEC KEY STATE4 | |
54b6a1bd HY |
2071 | .align 4 |
2072 | .L4dec192: | |
2073 | movaps -0x40(TKEYP), KEY | |
b369e521 HY |
2074 | AESDEC KEY STATE1 |
2075 | AESDEC KEY STATE2 | |
2076 | AESDEC KEY STATE3 | |
2077 | AESDEC KEY STATE4 | |
54b6a1bd | 2078 | movaps -0x30(TKEYP), KEY |
b369e521 HY |
2079 | AESDEC KEY STATE1 |
2080 | AESDEC KEY STATE2 | |
2081 | AESDEC KEY STATE3 | |
2082 | AESDEC KEY STATE4 | |
54b6a1bd HY |
2083 | .align 4 |
2084 | .L4dec128: | |
2085 | movaps -0x20(TKEYP), KEY | |
b369e521 HY |
2086 | AESDEC KEY STATE1 |
2087 | AESDEC KEY STATE2 | |
2088 | AESDEC KEY STATE3 | |
2089 | AESDEC KEY STATE4 | |
54b6a1bd | 2090 | movaps -0x10(TKEYP), KEY |
b369e521 HY |
2091 | AESDEC KEY STATE1 |
2092 | AESDEC KEY STATE2 | |
2093 | AESDEC KEY STATE3 | |
2094 | AESDEC KEY STATE4 | |
54b6a1bd | 2095 | movaps (TKEYP), KEY |
b369e521 HY |
2096 | AESDEC KEY STATE1 |
2097 | AESDEC KEY STATE2 | |
2098 | AESDEC KEY STATE3 | |
2099 | AESDEC KEY STATE4 | |
54b6a1bd | 2100 | movaps 0x10(TKEYP), KEY |
b369e521 HY |
2101 | AESDEC KEY STATE1 |
2102 | AESDEC KEY STATE2 | |
2103 | AESDEC KEY STATE3 | |
2104 | AESDEC KEY STATE4 | |
54b6a1bd | 2105 | movaps 0x20(TKEYP), KEY |
b369e521 HY |
2106 | AESDEC KEY STATE1 |
2107 | AESDEC KEY STATE2 | |
2108 | AESDEC KEY STATE3 | |
2109 | AESDEC KEY STATE4 | |
54b6a1bd | 2110 | movaps 0x30(TKEYP), KEY |
b369e521 HY |
2111 | AESDEC KEY STATE1 |
2112 | AESDEC KEY STATE2 | |
2113 | AESDEC KEY STATE3 | |
2114 | AESDEC KEY STATE4 | |
54b6a1bd | 2115 | movaps 0x40(TKEYP), KEY |
b369e521 HY |
2116 | AESDEC KEY STATE1 |
2117 | AESDEC KEY STATE2 | |
2118 | AESDEC KEY STATE3 | |
2119 | AESDEC KEY STATE4 | |
54b6a1bd | 2120 | movaps 0x50(TKEYP), KEY |
b369e521 HY |
2121 | AESDEC KEY STATE1 |
2122 | AESDEC KEY STATE2 | |
2123 | AESDEC KEY STATE3 | |
2124 | AESDEC KEY STATE4 | |
54b6a1bd | 2125 | movaps 0x60(TKEYP), KEY |
b369e521 HY |
2126 | AESDEC KEY STATE1 |
2127 | AESDEC KEY STATE2 | |
2128 | AESDEC KEY STATE3 | |
2129 | AESDEC KEY STATE4 | |
54b6a1bd | 2130 | movaps 0x70(TKEYP), KEY |
b369e521 HY |
2131 | AESDECLAST KEY STATE1 # last round |
2132 | AESDECLAST KEY STATE2 | |
2133 | AESDECLAST KEY STATE3 | |
2134 | AESDECLAST KEY STATE4 | |
54b6a1bd | 2135 | ret |
8309b745 | 2136 | ENDPROC(_aesni_dec4) |
54b6a1bd HY |
2137 | |
2138 | /* | |
2139 | * void aesni_ecb_enc(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src, | |
2140 | * size_t len) | |
2141 | */ | |
2142 | ENTRY(aesni_ecb_enc) | |
8691ccd7 | 2143 | FRAME_BEGIN |
0d258efb MK |
2144 | #ifndef __x86_64__ |
2145 | pushl LEN | |
2146 | pushl KEYP | |
2147 | pushl KLEN | |
8691ccd7 JP |
2148 | movl (FRAME_OFFSET+16)(%esp), KEYP # ctx |
2149 | movl (FRAME_OFFSET+20)(%esp), OUTP # dst | |
2150 | movl (FRAME_OFFSET+24)(%esp), INP # src | |
2151 | movl (FRAME_OFFSET+28)(%esp), LEN # len | |
0d258efb | 2152 | #endif |
54b6a1bd HY |
2153 | test LEN, LEN # check length |
2154 | jz .Lecb_enc_ret | |
2155 | mov 480(KEYP), KLEN | |
2156 | cmp $16, LEN | |
2157 | jb .Lecb_enc_ret | |
2158 | cmp $64, LEN | |
2159 | jb .Lecb_enc_loop1 | |
2160 | .align 4 | |
2161 | .Lecb_enc_loop4: | |
2162 | movups (INP), STATE1 | |
2163 | movups 0x10(INP), STATE2 | |
2164 | movups 0x20(INP), STATE3 | |
2165 | movups 0x30(INP), STATE4 | |
2166 | call _aesni_enc4 | |
2167 | movups STATE1, (OUTP) | |
2168 | movups STATE2, 0x10(OUTP) | |
2169 | movups STATE3, 0x20(OUTP) | |
2170 | movups STATE4, 0x30(OUTP) | |
2171 | sub $64, LEN | |
2172 | add $64, INP | |
2173 | add $64, OUTP | |
2174 | cmp $64, LEN | |
2175 | jge .Lecb_enc_loop4 | |
2176 | cmp $16, LEN | |
2177 | jb .Lecb_enc_ret | |
2178 | .align 4 | |
2179 | .Lecb_enc_loop1: | |
2180 | movups (INP), STATE1 | |
2181 | call _aesni_enc1 | |
2182 | movups STATE1, (OUTP) | |
2183 | sub $16, LEN | |
2184 | add $16, INP | |
2185 | add $16, OUTP | |
2186 | cmp $16, LEN | |
2187 | jge .Lecb_enc_loop1 | |
2188 | .Lecb_enc_ret: | |
0d258efb MK |
2189 | #ifndef __x86_64__ |
2190 | popl KLEN | |
2191 | popl KEYP | |
2192 | popl LEN | |
2193 | #endif | |
8691ccd7 | 2194 | FRAME_END |
54b6a1bd | 2195 | ret |
8309b745 | 2196 | ENDPROC(aesni_ecb_enc) |
54b6a1bd HY |
2197 | |
2198 | /* | |
2199 | * void aesni_ecb_dec(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src, | |
2200 | * size_t len); | |
2201 | */ | |
2202 | ENTRY(aesni_ecb_dec) | |
8691ccd7 | 2203 | FRAME_BEGIN |
0d258efb MK |
2204 | #ifndef __x86_64__ |
2205 | pushl LEN | |
2206 | pushl KEYP | |
2207 | pushl KLEN | |
8691ccd7 JP |
2208 | movl (FRAME_OFFSET+16)(%esp), KEYP # ctx |
2209 | movl (FRAME_OFFSET+20)(%esp), OUTP # dst | |
2210 | movl (FRAME_OFFSET+24)(%esp), INP # src | |
2211 | movl (FRAME_OFFSET+28)(%esp), LEN # len | |
0d258efb | 2212 | #endif |
54b6a1bd HY |
2213 | test LEN, LEN |
2214 | jz .Lecb_dec_ret | |
2215 | mov 480(KEYP), KLEN | |
2216 | add $240, KEYP | |
2217 | cmp $16, LEN | |
2218 | jb .Lecb_dec_ret | |
2219 | cmp $64, LEN | |
2220 | jb .Lecb_dec_loop1 | |
2221 | .align 4 | |
2222 | .Lecb_dec_loop4: | |
2223 | movups (INP), STATE1 | |
2224 | movups 0x10(INP), STATE2 | |
2225 | movups 0x20(INP), STATE3 | |
2226 | movups 0x30(INP), STATE4 | |
2227 | call _aesni_dec4 | |
2228 | movups STATE1, (OUTP) | |
2229 | movups STATE2, 0x10(OUTP) | |
2230 | movups STATE3, 0x20(OUTP) | |
2231 | movups STATE4, 0x30(OUTP) | |
2232 | sub $64, LEN | |
2233 | add $64, INP | |
2234 | add $64, OUTP | |
2235 | cmp $64, LEN | |
2236 | jge .Lecb_dec_loop4 | |
2237 | cmp $16, LEN | |
2238 | jb .Lecb_dec_ret | |
2239 | .align 4 | |
2240 | .Lecb_dec_loop1: | |
2241 | movups (INP), STATE1 | |
2242 | call _aesni_dec1 | |
2243 | movups STATE1, (OUTP) | |
2244 | sub $16, LEN | |
2245 | add $16, INP | |
2246 | add $16, OUTP | |
2247 | cmp $16, LEN | |
2248 | jge .Lecb_dec_loop1 | |
2249 | .Lecb_dec_ret: | |
0d258efb MK |
2250 | #ifndef __x86_64__ |
2251 | popl KLEN | |
2252 | popl KEYP | |
2253 | popl LEN | |
2254 | #endif | |
8691ccd7 | 2255 | FRAME_END |
54b6a1bd | 2256 | ret |
8309b745 | 2257 | ENDPROC(aesni_ecb_dec) |
54b6a1bd HY |
2258 | |
2259 | /* | |
2260 | * void aesni_cbc_enc(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src, | |
2261 | * size_t len, u8 *iv) | |
2262 | */ | |
2263 | ENTRY(aesni_cbc_enc) | |
8691ccd7 | 2264 | FRAME_BEGIN |
0d258efb MK |
2265 | #ifndef __x86_64__ |
2266 | pushl IVP | |
2267 | pushl LEN | |
2268 | pushl KEYP | |
2269 | pushl KLEN | |
8691ccd7 JP |
2270 | movl (FRAME_OFFSET+20)(%esp), KEYP # ctx |
2271 | movl (FRAME_OFFSET+24)(%esp), OUTP # dst | |
2272 | movl (FRAME_OFFSET+28)(%esp), INP # src | |
2273 | movl (FRAME_OFFSET+32)(%esp), LEN # len | |
2274 | movl (FRAME_OFFSET+36)(%esp), IVP # iv | |
0d258efb | 2275 | #endif |
54b6a1bd HY |
2276 | cmp $16, LEN |
2277 | jb .Lcbc_enc_ret | |
2278 | mov 480(KEYP), KLEN | |
2279 | movups (IVP), STATE # load iv as initial state | |
2280 | .align 4 | |
2281 | .Lcbc_enc_loop: | |
2282 | movups (INP), IN # load input | |
2283 | pxor IN, STATE | |
2284 | call _aesni_enc1 | |
2285 | movups STATE, (OUTP) # store output | |
2286 | sub $16, LEN | |
2287 | add $16, INP | |
2288 | add $16, OUTP | |
2289 | cmp $16, LEN | |
2290 | jge .Lcbc_enc_loop | |
2291 | movups STATE, (IVP) | |
2292 | .Lcbc_enc_ret: | |
0d258efb MK |
2293 | #ifndef __x86_64__ |
2294 | popl KLEN | |
2295 | popl KEYP | |
2296 | popl LEN | |
2297 | popl IVP | |
2298 | #endif | |
8691ccd7 | 2299 | FRAME_END |
54b6a1bd | 2300 | ret |
8309b745 | 2301 | ENDPROC(aesni_cbc_enc) |
54b6a1bd HY |
2302 | |
2303 | /* | |
2304 | * void aesni_cbc_dec(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src, | |
2305 | * size_t len, u8 *iv) | |
2306 | */ | |
2307 | ENTRY(aesni_cbc_dec) | |
8691ccd7 | 2308 | FRAME_BEGIN |
0d258efb MK |
2309 | #ifndef __x86_64__ |
2310 | pushl IVP | |
2311 | pushl LEN | |
2312 | pushl KEYP | |
2313 | pushl KLEN | |
8691ccd7 JP |
2314 | movl (FRAME_OFFSET+20)(%esp), KEYP # ctx |
2315 | movl (FRAME_OFFSET+24)(%esp), OUTP # dst | |
2316 | movl (FRAME_OFFSET+28)(%esp), INP # src | |
2317 | movl (FRAME_OFFSET+32)(%esp), LEN # len | |
2318 | movl (FRAME_OFFSET+36)(%esp), IVP # iv | |
0d258efb | 2319 | #endif |
54b6a1bd | 2320 | cmp $16, LEN |
e6efaa02 | 2321 | jb .Lcbc_dec_just_ret |
54b6a1bd HY |
2322 | mov 480(KEYP), KLEN |
2323 | add $240, KEYP | |
2324 | movups (IVP), IV | |
2325 | cmp $64, LEN | |
2326 | jb .Lcbc_dec_loop1 | |
2327 | .align 4 | |
2328 | .Lcbc_dec_loop4: | |
2329 | movups (INP), IN1 | |
2330 | movaps IN1, STATE1 | |
2331 | movups 0x10(INP), IN2 | |
2332 | movaps IN2, STATE2 | |
0d258efb | 2333 | #ifdef __x86_64__ |
54b6a1bd HY |
2334 | movups 0x20(INP), IN3 |
2335 | movaps IN3, STATE3 | |
2336 | movups 0x30(INP), IN4 | |
2337 | movaps IN4, STATE4 | |
0d258efb MK |
2338 | #else |
2339 | movups 0x20(INP), IN1 | |
2340 | movaps IN1, STATE3 | |
2341 | movups 0x30(INP), IN2 | |
2342 | movaps IN2, STATE4 | |
2343 | #endif | |
54b6a1bd HY |
2344 | call _aesni_dec4 |
2345 | pxor IV, STATE1 | |
0d258efb | 2346 | #ifdef __x86_64__ |
54b6a1bd HY |
2347 | pxor IN1, STATE2 |
2348 | pxor IN2, STATE3 | |
2349 | pxor IN3, STATE4 | |
2350 | movaps IN4, IV | |
0d258efb | 2351 | #else |
0d258efb MK |
2352 | pxor IN1, STATE4 |
2353 | movaps IN2, IV | |
7c8d5184 MK |
2354 | movups (INP), IN1 |
2355 | pxor IN1, STATE2 | |
2356 | movups 0x10(INP), IN2 | |
2357 | pxor IN2, STATE3 | |
0d258efb | 2358 | #endif |
54b6a1bd HY |
2359 | movups STATE1, (OUTP) |
2360 | movups STATE2, 0x10(OUTP) | |
2361 | movups STATE3, 0x20(OUTP) | |
2362 | movups STATE4, 0x30(OUTP) | |
2363 | sub $64, LEN | |
2364 | add $64, INP | |
2365 | add $64, OUTP | |
2366 | cmp $64, LEN | |
2367 | jge .Lcbc_dec_loop4 | |
2368 | cmp $16, LEN | |
2369 | jb .Lcbc_dec_ret | |
2370 | .align 4 | |
2371 | .Lcbc_dec_loop1: | |
2372 | movups (INP), IN | |
2373 | movaps IN, STATE | |
2374 | call _aesni_dec1 | |
2375 | pxor IV, STATE | |
2376 | movups STATE, (OUTP) | |
2377 | movaps IN, IV | |
2378 | sub $16, LEN | |
2379 | add $16, INP | |
2380 | add $16, OUTP | |
2381 | cmp $16, LEN | |
2382 | jge .Lcbc_dec_loop1 | |
54b6a1bd | 2383 | .Lcbc_dec_ret: |
e6efaa02 HY |
2384 | movups IV, (IVP) |
2385 | .Lcbc_dec_just_ret: | |
0d258efb MK |
2386 | #ifndef __x86_64__ |
2387 | popl KLEN | |
2388 | popl KEYP | |
2389 | popl LEN | |
2390 | popl IVP | |
2391 | #endif | |
8691ccd7 | 2392 | FRAME_END |
54b6a1bd | 2393 | ret |
8309b745 | 2394 | ENDPROC(aesni_cbc_dec) |
12387a46 | 2395 | |
0d258efb | 2396 | #ifdef __x86_64__ |
1253cab8 | 2397 | .pushsection .rodata |
12387a46 HY |
2398 | .align 16 |
2399 | .Lbswap_mask: | |
2400 | .byte 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0 | |
1253cab8 | 2401 | .popsection |
12387a46 HY |
2402 | |
2403 | /* | |
2404 | * _aesni_inc_init: internal ABI | |
2405 | * setup registers used by _aesni_inc | |
2406 | * input: | |
2407 | * IV | |
2408 | * output: | |
2409 | * CTR: == IV, in little endian | |
2410 | * TCTR_LOW: == lower qword of CTR | |
2411 | * INC: == 1, in little endian | |
2412 | * BSWAP_MASK == endian swapping mask | |
2413 | */ | |
0d258efb | 2414 | .align 4 |
12387a46 HY |
2415 | _aesni_inc_init: |
2416 | movaps .Lbswap_mask, BSWAP_MASK | |
2417 | movaps IV, CTR | |
2418 | PSHUFB_XMM BSWAP_MASK CTR | |
2419 | mov $1, TCTR_LOW | |
32cbd7df HY |
2420 | MOVQ_R64_XMM TCTR_LOW INC |
2421 | MOVQ_R64_XMM CTR TCTR_LOW | |
12387a46 | 2422 | ret |
8309b745 | 2423 | ENDPROC(_aesni_inc_init) |
12387a46 HY |
2424 | |
2425 | /* | |
2426 | * _aesni_inc: internal ABI | |
2427 | * Increase IV by 1, IV is in big endian | |
2428 | * input: | |
2429 | * IV | |
2430 | * CTR: == IV, in little endian | |
2431 | * TCTR_LOW: == lower qword of CTR | |
2432 | * INC: == 1, in little endian | |
2433 | * BSWAP_MASK == endian swapping mask | |
2434 | * output: | |
2435 | * IV: Increase by 1 | |
2436 | * changed: | |
2437 | * CTR: == output IV, in little endian | |
2438 | * TCTR_LOW: == lower qword of CTR | |
2439 | */ | |
0d258efb | 2440 | .align 4 |
12387a46 HY |
2441 | _aesni_inc: |
2442 | paddq INC, CTR | |
2443 | add $1, TCTR_LOW | |
2444 | jnc .Linc_low | |
2445 | pslldq $8, INC | |
2446 | paddq INC, CTR | |
2447 | psrldq $8, INC | |
2448 | .Linc_low: | |
2449 | movaps CTR, IV | |
2450 | PSHUFB_XMM BSWAP_MASK IV | |
2451 | ret | |
8309b745 | 2452 | ENDPROC(_aesni_inc) |
12387a46 HY |
2453 | |
2454 | /* | |
2455 | * void aesni_ctr_enc(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src, | |
2456 | * size_t len, u8 *iv) | |
2457 | */ | |
2458 | ENTRY(aesni_ctr_enc) | |
8691ccd7 | 2459 | FRAME_BEGIN |
12387a46 HY |
2460 | cmp $16, LEN |
2461 | jb .Lctr_enc_just_ret | |
2462 | mov 480(KEYP), KLEN | |
2463 | movups (IVP), IV | |
2464 | call _aesni_inc_init | |
2465 | cmp $64, LEN | |
2466 | jb .Lctr_enc_loop1 | |
2467 | .align 4 | |
2468 | .Lctr_enc_loop4: | |
2469 | movaps IV, STATE1 | |
2470 | call _aesni_inc | |
2471 | movups (INP), IN1 | |
2472 | movaps IV, STATE2 | |
2473 | call _aesni_inc | |
2474 | movups 0x10(INP), IN2 | |
2475 | movaps IV, STATE3 | |
2476 | call _aesni_inc | |
2477 | movups 0x20(INP), IN3 | |
2478 | movaps IV, STATE4 | |
2479 | call _aesni_inc | |
2480 | movups 0x30(INP), IN4 | |
2481 | call _aesni_enc4 | |
2482 | pxor IN1, STATE1 | |
2483 | movups STATE1, (OUTP) | |
2484 | pxor IN2, STATE2 | |
2485 | movups STATE2, 0x10(OUTP) | |
2486 | pxor IN3, STATE3 | |
2487 | movups STATE3, 0x20(OUTP) | |
2488 | pxor IN4, STATE4 | |
2489 | movups STATE4, 0x30(OUTP) | |
2490 | sub $64, LEN | |
2491 | add $64, INP | |
2492 | add $64, OUTP | |
2493 | cmp $64, LEN | |
2494 | jge .Lctr_enc_loop4 | |
2495 | cmp $16, LEN | |
2496 | jb .Lctr_enc_ret | |
2497 | .align 4 | |
2498 | .Lctr_enc_loop1: | |
2499 | movaps IV, STATE | |
2500 | call _aesni_inc | |
2501 | movups (INP), IN | |
2502 | call _aesni_enc1 | |
2503 | pxor IN, STATE | |
2504 | movups STATE, (OUTP) | |
2505 | sub $16, LEN | |
2506 | add $16, INP | |
2507 | add $16, OUTP | |
2508 | cmp $16, LEN | |
2509 | jge .Lctr_enc_loop1 | |
2510 | .Lctr_enc_ret: | |
2511 | movups IV, (IVP) | |
2512 | .Lctr_enc_just_ret: | |
8691ccd7 | 2513 | FRAME_END |
12387a46 | 2514 | ret |
8309b745 | 2515 | ENDPROC(aesni_ctr_enc) |
c456a9cd JK |
2516 | |
2517 | /* | |
2518 | * _aesni_gf128mul_x_ble: internal ABI | |
2519 | * Multiply in GF(2^128) for XTS IVs | |
2520 | * input: | |
2521 | * IV: current IV | |
2522 | * GF128MUL_MASK == mask with 0x87 and 0x01 | |
2523 | * output: | |
2524 | * IV: next IV | |
2525 | * changed: | |
2526 | * CTR: == temporary value | |
2527 | */ | |
2528 | #define _aesni_gf128mul_x_ble() \ | |
2529 | pshufd $0x13, IV, CTR; \ | |
2530 | paddq IV, IV; \ | |
2531 | psrad $31, CTR; \ | |
2532 | pand GF128MUL_MASK, CTR; \ | |
2533 | pxor CTR, IV; | |
2534 | ||
2535 | /* | |
2536 | * void aesni_xts_crypt8(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src, | |
2537 | * bool enc, u8 *iv) | |
2538 | */ | |
2539 | ENTRY(aesni_xts_crypt8) | |
8691ccd7 | 2540 | FRAME_BEGIN |
c456a9cd JK |
2541 | cmpb $0, %cl |
2542 | movl $0, %ecx | |
2543 | movl $240, %r10d | |
2544 | leaq _aesni_enc4, %r11 | |
2545 | leaq _aesni_dec4, %rax | |
2546 | cmovel %r10d, %ecx | |
2547 | cmoveq %rax, %r11 | |
2548 | ||
2549 | movdqa .Lgf128mul_x_ble_mask, GF128MUL_MASK | |
2550 | movups (IVP), IV | |
2551 | ||
2552 | mov 480(KEYP), KLEN | |
2553 | addq %rcx, KEYP | |
2554 | ||
2555 | movdqa IV, STATE1 | |
fe6510b5 JK |
2556 | movdqu 0x00(INP), INC |
2557 | pxor INC, STATE1 | |
c456a9cd JK |
2558 | movdqu IV, 0x00(OUTP) |
2559 | ||
2560 | _aesni_gf128mul_x_ble() | |
2561 | movdqa IV, STATE2 | |
fe6510b5 JK |
2562 | movdqu 0x10(INP), INC |
2563 | pxor INC, STATE2 | |
c456a9cd JK |
2564 | movdqu IV, 0x10(OUTP) |
2565 | ||
2566 | _aesni_gf128mul_x_ble() | |
2567 | movdqa IV, STATE3 | |
fe6510b5 JK |
2568 | movdqu 0x20(INP), INC |
2569 | pxor INC, STATE3 | |
c456a9cd JK |
2570 | movdqu IV, 0x20(OUTP) |
2571 | ||
2572 | _aesni_gf128mul_x_ble() | |
2573 | movdqa IV, STATE4 | |
fe6510b5 JK |
2574 | movdqu 0x30(INP), INC |
2575 | pxor INC, STATE4 | |
c456a9cd JK |
2576 | movdqu IV, 0x30(OUTP) |
2577 | ||
9697fa39 | 2578 | CALL_NOSPEC %r11 |
c456a9cd | 2579 | |
fe6510b5 JK |
2580 | movdqu 0x00(OUTP), INC |
2581 | pxor INC, STATE1 | |
c456a9cd JK |
2582 | movdqu STATE1, 0x00(OUTP) |
2583 | ||
2584 | _aesni_gf128mul_x_ble() | |
2585 | movdqa IV, STATE1 | |
fe6510b5 JK |
2586 | movdqu 0x40(INP), INC |
2587 | pxor INC, STATE1 | |
c456a9cd JK |
2588 | movdqu IV, 0x40(OUTP) |
2589 | ||
fe6510b5 JK |
2590 | movdqu 0x10(OUTP), INC |
2591 | pxor INC, STATE2 | |
c456a9cd JK |
2592 | movdqu STATE2, 0x10(OUTP) |
2593 | ||
2594 | _aesni_gf128mul_x_ble() | |
2595 | movdqa IV, STATE2 | |
fe6510b5 JK |
2596 | movdqu 0x50(INP), INC |
2597 | pxor INC, STATE2 | |
c456a9cd JK |
2598 | movdqu IV, 0x50(OUTP) |
2599 | ||
fe6510b5 JK |
2600 | movdqu 0x20(OUTP), INC |
2601 | pxor INC, STATE3 | |
c456a9cd JK |
2602 | movdqu STATE3, 0x20(OUTP) |
2603 | ||
2604 | _aesni_gf128mul_x_ble() | |
2605 | movdqa IV, STATE3 | |
fe6510b5 JK |
2606 | movdqu 0x60(INP), INC |
2607 | pxor INC, STATE3 | |
c456a9cd JK |
2608 | movdqu IV, 0x60(OUTP) |
2609 | ||
fe6510b5 JK |
2610 | movdqu 0x30(OUTP), INC |
2611 | pxor INC, STATE4 | |
c456a9cd JK |
2612 | movdqu STATE4, 0x30(OUTP) |
2613 | ||
2614 | _aesni_gf128mul_x_ble() | |
2615 | movdqa IV, STATE4 | |
fe6510b5 JK |
2616 | movdqu 0x70(INP), INC |
2617 | pxor INC, STATE4 | |
c456a9cd JK |
2618 | movdqu IV, 0x70(OUTP) |
2619 | ||
2620 | _aesni_gf128mul_x_ble() | |
2621 | movups IV, (IVP) | |
2622 | ||
9697fa39 | 2623 | CALL_NOSPEC %r11 |
c456a9cd | 2624 | |
fe6510b5 JK |
2625 | movdqu 0x40(OUTP), INC |
2626 | pxor INC, STATE1 | |
c456a9cd JK |
2627 | movdqu STATE1, 0x40(OUTP) |
2628 | ||
fe6510b5 JK |
2629 | movdqu 0x50(OUTP), INC |
2630 | pxor INC, STATE2 | |
c456a9cd JK |
2631 | movdqu STATE2, 0x50(OUTP) |
2632 | ||
fe6510b5 JK |
2633 | movdqu 0x60(OUTP), INC |
2634 | pxor INC, STATE3 | |
c456a9cd JK |
2635 | movdqu STATE3, 0x60(OUTP) |
2636 | ||
fe6510b5 JK |
2637 | movdqu 0x70(OUTP), INC |
2638 | pxor INC, STATE4 | |
c456a9cd JK |
2639 | movdqu STATE4, 0x70(OUTP) |
2640 | ||
8691ccd7 | 2641 | FRAME_END |
c456a9cd JK |
2642 | ret |
2643 | ENDPROC(aesni_xts_crypt8) | |
2644 | ||
0d258efb | 2645 | #endif |