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c4a52a6d AP |
1 | #!/usr/bin/env perl |
2 | ||
3 | # ==================================================================== | |
358c372d | 4 | # Written by Andy Polyakov <appro@openssl.org> for the OpenSSL |
c4a52a6d AP |
5 | # project. The module is, however, dual licensed under OpenSSL and |
6 | # CRYPTOGAMS licenses depending on where you obtain it. For further | |
7 | # details see http://www.openssl.org/~appro/cryptogams/. | |
e0202d94 AP |
8 | # |
9 | # Specific modes and adaptation for Linux kernel by Ard Biesheuvel | |
10 | # <ard.biesheuvel@linaro.org>. Permission to use under GPL terms is | |
11 | # granted. | |
c4a52a6d AP |
12 | # ==================================================================== |
13 | ||
14 | # Bit-sliced AES for ARM NEON | |
15 | # | |
16 | # February 2012. | |
17 | # | |
18 | # This implementation is direct adaptation of bsaes-x86_64 module for | |
19 | # ARM NEON. Except that this module is endian-neutral [in sense that | |
20 | # it can be compiled for either endianness] by courtesy of vld1.8's | |
21 | # neutrality. Initial version doesn't implement interface to OpenSSL, | |
22 | # only low-level primitives and unsupported entry points, just enough | |
23 | # to collect performance results, which for Cortex-A8 core are: | |
24 | # | |
e7db9896 | 25 | # encrypt 19.5 cycles per byte processed with 128-bit key |
6f6a6130 | 26 | # decrypt 22.1 cycles per byte processed with 128-bit key |
e7db9896 | 27 | # key conv. 440 cycles per 128-bit key/0.18 of 8x block |
c4a52a6d | 28 | # |
6f6a6130 | 29 | # Snapdragon S4 encrypts byte in 17.6 cycles and decrypts in 19.7, |
e7db9896 AP |
30 | # which is [much] worse than anticipated (for further details see |
31 | # http://www.openssl.org/~appro/Snapdragon-S4.html). | |
a903e691 | 32 | # |
6f6a6130 | 33 | # Cortex-A15 manages in 14.2/16.1 cycles [when integer-only code |
75fe4223 AP |
34 | # manages in 20.0 cycles]. |
35 | # | |
c4a52a6d | 36 | # When comparing to x86_64 results keep in mind that NEON unit is |
a903e691 AP |
37 | # [mostly] single-issue and thus can't [fully] benefit from |
38 | # instruction-level parallelism. And when comparing to aes-armv4 | |
39 | # results keep in mind key schedule conversion overhead (see | |
40 | # bsaes-x86_64.pl for further details)... | |
c4a52a6d AP |
41 | # |
42 | # <appro@openssl.org> | |
43 | ||
e0202d94 AP |
44 | # April-August 2013 |
45 | # | |
46 | # Add CBC, CTR and XTS subroutines, adapt for kernel use. | |
47 | # | |
48 | # <ard.biesheuvel@linaro.org> | |
49 | ||
c4a52a6d AP |
50 | while (($output=shift) && ($output!~/^\w[\w\-]*\.\w+$/)) {} |
51 | open STDOUT,">$output"; | |
52 | ||
53 | my ($inp,$out,$len,$key)=("r0","r1","r2","r3"); | |
54 | my @XMM=map("q$_",(0..15)); | |
55 | ||
56 | { | |
57 | my ($key,$rounds,$const)=("r4","r5","r6"); | |
58 | ||
59 | sub Dlo() { shift=~m|q([1]?[0-9])|?"d".($1*2):""; } | |
60 | sub Dhi() { shift=~m|q([1]?[0-9])|?"d".($1*2+1):""; } | |
61 | ||
62 | sub Sbox { | |
63 | # input in lsb > [b0, b1, b2, b3, b4, b5, b6, b7] < msb | |
64 | # output in lsb > [b0, b1, b4, b6, b3, b7, b2, b5] < msb | |
65 | my @b=@_[0..7]; | |
66 | my @t=@_[8..11]; | |
67 | my @s=@_[12..15]; | |
68 | &InBasisChange (@b); | |
69 | &Inv_GF256 (@b[6,5,0,3,7,1,4,2],@t,@s); | |
70 | &OutBasisChange (@b[7,1,4,2,6,5,0,3]); | |
71 | } | |
72 | ||
73 | sub InBasisChange { | |
74 | # input in lsb > [b0, b1, b2, b3, b4, b5, b6, b7] < msb | |
75 | # output in lsb > [b6, b5, b0, b3, b7, b1, b4, b2] < msb | |
76 | my @b=@_[0..7]; | |
77 | $code.=<<___; | |
c4a52a6d | 78 | veor @b[2], @b[2], @b[1] |
a903e691 | 79 | veor @b[5], @b[5], @b[6] |
c4a52a6d AP |
80 | veor @b[3], @b[3], @b[0] |
81 | veor @b[6], @b[6], @b[2] | |
82 | veor @b[5], @b[5], @b[0] | |
83 | ||
84 | veor @b[6], @b[6], @b[3] | |
85 | veor @b[3], @b[3], @b[7] | |
86 | veor @b[7], @b[7], @b[5] | |
87 | veor @b[3], @b[3], @b[4] | |
88 | veor @b[4], @b[4], @b[5] | |
c4a52a6d AP |
89 | |
90 | veor @b[2], @b[2], @b[7] | |
a903e691 | 91 | veor @b[3], @b[3], @b[1] |
c4a52a6d AP |
92 | veor @b[1], @b[1], @b[5] |
93 | ___ | |
94 | } | |
95 | ||
96 | sub OutBasisChange { | |
97 | # input in lsb > [b0, b1, b2, b3, b4, b5, b6, b7] < msb | |
98 | # output in lsb > [b6, b1, b2, b4, b7, b0, b3, b5] < msb | |
99 | my @b=@_[0..7]; | |
100 | $code.=<<___; | |
101 | veor @b[0], @b[0], @b[6] | |
102 | veor @b[1], @b[1], @b[4] | |
c4a52a6d | 103 | veor @b[4], @b[4], @b[6] |
a903e691 | 104 | veor @b[2], @b[2], @b[0] |
c4a52a6d AP |
105 | veor @b[6], @b[6], @b[1] |
106 | ||
107 | veor @b[1], @b[1], @b[5] | |
108 | veor @b[5], @b[5], @b[3] | |
109 | veor @b[3], @b[3], @b[7] | |
110 | veor @b[7], @b[7], @b[5] | |
111 | veor @b[2], @b[2], @b[5] | |
112 | ||
113 | veor @b[4], @b[4], @b[7] | |
114 | ___ | |
115 | } | |
116 | ||
117 | sub InvSbox { | |
118 | # input in lsb > [b0, b1, b2, b3, b4, b5, b6, b7] < msb | |
119 | # output in lsb > [b0, b1, b6, b4, b2, b7, b3, b5] < msb | |
120 | my @b=@_[0..7]; | |
121 | my @t=@_[8..11]; | |
122 | my @s=@_[12..15]; | |
123 | &InvInBasisChange (@b); | |
124 | &Inv_GF256 (@b[5,1,2,6,3,7,0,4],@t,@s); | |
125 | &InvOutBasisChange (@b[3,7,0,4,5,1,2,6]); | |
126 | } | |
127 | ||
a903e691 | 128 | sub InvInBasisChange { # OutBasisChange in reverse (with twist) |
c4a52a6d AP |
129 | my @b=@_[5,1,2,6,3,7,0,4]; |
130 | $code.=<<___ | |
a903e691 | 131 | veor @b[1], @b[1], @b[7] |
c4a52a6d AP |
132 | veor @b[4], @b[4], @b[7] |
133 | ||
134 | veor @b[7], @b[7], @b[5] | |
a903e691 | 135 | veor @b[1], @b[1], @b[3] |
c4a52a6d AP |
136 | veor @b[2], @b[2], @b[5] |
137 | veor @b[3], @b[3], @b[7] | |
c4a52a6d AP |
138 | |
139 | veor @b[6], @b[6], @b[1] | |
140 | veor @b[2], @b[2], @b[0] | |
a903e691 | 141 | veor @b[5], @b[5], @b[3] |
c4a52a6d AP |
142 | veor @b[4], @b[4], @b[6] |
143 | veor @b[0], @b[0], @b[6] | |
144 | veor @b[1], @b[1], @b[4] | |
145 | ___ | |
146 | } | |
147 | ||
148 | sub InvOutBasisChange { # InBasisChange in reverse | |
149 | my @b=@_[2,5,7,3,6,1,0,4]; | |
150 | $code.=<<___; | |
151 | veor @b[1], @b[1], @b[5] | |
152 | veor @b[2], @b[2], @b[7] | |
153 | ||
154 | veor @b[3], @b[3], @b[1] | |
155 | veor @b[4], @b[4], @b[5] | |
156 | veor @b[7], @b[7], @b[5] | |
157 | veor @b[3], @b[3], @b[4] | |
158 | veor @b[5], @b[5], @b[0] | |
159 | veor @b[3], @b[3], @b[7] | |
160 | veor @b[6], @b[6], @b[2] | |
161 | veor @b[2], @b[2], @b[1] | |
162 | veor @b[6], @b[6], @b[3] | |
163 | ||
164 | veor @b[3], @b[3], @b[0] | |
165 | veor @b[5], @b[5], @b[6] | |
166 | ___ | |
167 | } | |
168 | ||
169 | sub Mul_GF4 { | |
170 | #;************************************************************* | |
171 | #;* Mul_GF4: Input x0-x1,y0-y1 Output x0-x1 Temp t0 (8) * | |
172 | #;************************************************************* | |
a903e691 | 173 | my ($x0,$x1,$y0,$y1,$t0,$t1)=@_; |
c4a52a6d AP |
174 | $code.=<<___; |
175 | veor $t0, $y0, $y1 | |
176 | vand $t0, $t0, $x0 | |
177 | veor $x0, $x0, $x1 | |
a903e691 | 178 | vand $t1, $x1, $y0 |
c4a52a6d | 179 | vand $x0, $x0, $y1 |
a903e691 AP |
180 | veor $x1, $t1, $t0 |
181 | veor $x0, $x0, $t1 | |
c4a52a6d AP |
182 | ___ |
183 | } | |
184 | ||
185 | sub Mul_GF4_N { # not used, see next subroutine | |
186 | # multiply and scale by N | |
187 | my ($x0,$x1,$y0,$y1,$t0)=@_; | |
188 | $code.=<<___; | |
189 | veor $t0, $y0, $y1 | |
190 | vand $t0, $t0, $x0 | |
191 | veor $x0, $x0, $x1 | |
192 | vand $x1, $x1, $y0 | |
193 | vand $x0, $x0, $y1 | |
194 | veor $x1, $x1, $x0 | |
195 | veor $x0, $x0, $t0 | |
196 | ___ | |
197 | } | |
198 | ||
199 | sub Mul_GF4_N_GF4 { | |
200 | # interleaved Mul_GF4_N and Mul_GF4 | |
201 | my ($x0,$x1,$y0,$y1,$t0, | |
202 | $x2,$x3,$y2,$y3,$t1)=@_; | |
203 | $code.=<<___; | |
204 | veor $t0, $y0, $y1 | |
205 | veor $t1, $y2, $y3 | |
206 | vand $t0, $t0, $x0 | |
207 | vand $t1, $t1, $x2 | |
208 | veor $x0, $x0, $x1 | |
209 | veor $x2, $x2, $x3 | |
210 | vand $x1, $x1, $y0 | |
211 | vand $x3, $x3, $y2 | |
212 | vand $x0, $x0, $y1 | |
213 | vand $x2, $x2, $y3 | |
214 | veor $x1, $x1, $x0 | |
215 | veor $x2, $x2, $x3 | |
216 | veor $x0, $x0, $t0 | |
217 | veor $x3, $x3, $t1 | |
218 | ___ | |
219 | } | |
220 | sub Mul_GF16_2 { | |
221 | my @x=@_[0..7]; | |
222 | my @y=@_[8..11]; | |
223 | my @t=@_[12..15]; | |
224 | $code.=<<___; | |
a903e691 AP |
225 | veor @t[0], @x[0], @x[2] |
226 | veor @t[1], @x[1], @x[3] | |
c4a52a6d | 227 | ___ |
a903e691 | 228 | &Mul_GF4 (@x[0], @x[1], @y[0], @y[1], @t[2..3]); |
c4a52a6d | 229 | $code.=<<___; |
c4a52a6d AP |
230 | veor @y[0], @y[0], @y[2] |
231 | veor @y[1], @y[1], @y[3] | |
232 | ___ | |
233 | Mul_GF4_N_GF4 (@t[0], @t[1], @y[0], @y[1], @t[3], | |
234 | @x[2], @x[3], @y[2], @y[3], @t[2]); | |
235 | $code.=<<___; | |
236 | veor @x[0], @x[0], @t[0] | |
237 | veor @x[2], @x[2], @t[0] | |
238 | veor @x[1], @x[1], @t[1] | |
239 | veor @x[3], @x[3], @t[1] | |
240 | ||
241 | veor @t[0], @x[4], @x[6] | |
242 | veor @t[1], @x[5], @x[7] | |
243 | ___ | |
244 | &Mul_GF4_N_GF4 (@t[0], @t[1], @y[0], @y[1], @t[3], | |
245 | @x[6], @x[7], @y[2], @y[3], @t[2]); | |
246 | $code.=<<___; | |
247 | veor @y[0], @y[0], @y[2] | |
248 | veor @y[1], @y[1], @y[3] | |
249 | ___ | |
a903e691 | 250 | &Mul_GF4 (@x[4], @x[5], @y[0], @y[1], @t[2..3]); |
c4a52a6d AP |
251 | $code.=<<___; |
252 | veor @x[4], @x[4], @t[0] | |
253 | veor @x[6], @x[6], @t[0] | |
254 | veor @x[5], @x[5], @t[1] | |
255 | veor @x[7], @x[7], @t[1] | |
256 | ___ | |
257 | } | |
258 | sub Inv_GF256 { | |
259 | #;******************************************************************** | |
260 | #;* Inv_GF256: Input x0-x7 Output x0-x7 Temp t0-t3,s0-s3 (144) * | |
261 | #;******************************************************************** | |
262 | my @x=@_[0..7]; | |
263 | my @t=@_[8..11]; | |
264 | my @s=@_[12..15]; | |
265 | # direct optimizations from hardware | |
266 | $code.=<<___; | |
267 | veor @t[3], @x[4], @x[6] | |
268 | veor @t[2], @x[5], @x[7] | |
269 | veor @t[1], @x[1], @x[3] | |
270 | veor @s[1], @x[7], @x[6] | |
271 | vmov @t[0], @t[2] | |
272 | veor @s[0], @x[0], @x[2] | |
273 | ||
274 | vorr @t[2], @t[2], @t[1] | |
275 | veor @s[3], @t[3], @t[0] | |
276 | vand @s[2], @t[3], @s[0] | |
277 | vorr @t[3], @t[3], @s[0] | |
278 | veor @s[0], @s[0], @t[1] | |
279 | vand @t[0], @t[0], @t[1] | |
4f16215b | 280 | veor @t[1], @x[3], @x[2] |
c4a52a6d | 281 | vand @s[3], @s[3], @s[0] |
4f16215b AP |
282 | vand @s[1], @s[1], @t[1] |
283 | veor @t[1], @x[4], @x[5] | |
284 | veor @s[0], @x[1], @x[0] | |
c4a52a6d AP |
285 | veor @t[3], @t[3], @s[1] |
286 | veor @t[2], @t[2], @s[1] | |
4f16215b AP |
287 | vand @s[1], @t[1], @s[0] |
288 | vorr @t[1], @t[1], @s[0] | |
c4a52a6d | 289 | veor @t[3], @t[3], @s[3] |
4f16215b | 290 | veor @t[0], @t[0], @s[1] |
c4a52a6d AP |
291 | veor @t[2], @t[2], @s[2] |
292 | veor @t[1], @t[1], @s[3] | |
293 | veor @t[0], @t[0], @s[2] | |
c4a52a6d | 294 | vand @s[0], @x[7], @x[3] |
4f16215b | 295 | veor @t[1], @t[1], @s[2] |
c4a52a6d AP |
296 | vand @s[1], @x[6], @x[2] |
297 | vand @s[2], @x[5], @x[1] | |
298 | vorr @s[3], @x[4], @x[0] | |
299 | veor @t[3], @t[3], @s[0] | |
c4a52a6d AP |
300 | veor @t[1], @t[1], @s[2] |
301 | veor @t[0], @t[0], @s[3] | |
e7db9896 | 302 | veor @t[2], @t[2], @s[1] |
c4a52a6d AP |
303 | |
304 | @ Inv_GF16 \t0, \t1, \t2, \t3, \s0, \s1, \s2, \s3 | |
305 | ||
306 | @ new smaller inversion | |
307 | ||
e7db9896 AP |
308 | vand @s[2], @t[3], @t[1] |
309 | vmov @s[0], @t[0] | |
c4a52a6d | 310 | |
e7db9896 AP |
311 | veor @s[1], @t[2], @s[2] |
312 | veor @s[3], @t[0], @s[2] | |
313 | veor @s[2], @t[0], @s[2] @ @s[2]=@s[3] | |
442c9f13 | 314 | |
442c9f13 | 315 | vbsl @s[1], @t[1], @t[0] |
e7db9896 AP |
316 | vbsl @s[3], @t[3], @t[2] |
317 | veor @t[3], @t[3], @t[2] | |
c4a52a6d | 318 | |
e7db9896 | 319 | vbsl @s[0], @s[1], @s[2] |
442c9f13 | 320 | vbsl @t[0], @s[2], @s[1] |
c4a52a6d | 321 | |
e7db9896 | 322 | vand @s[2], @s[0], @s[3] |
442c9f13 | 323 | veor @t[1], @t[1], @t[0] |
c4a52a6d | 324 | |
e7db9896 | 325 | veor @s[2], @s[2], @t[3] |
c4a52a6d AP |
326 | ___ |
327 | # output in s3, s2, s1, t1 | |
328 | ||
329 | # Mul_GF16_2 \x0, \x1, \x2, \x3, \x4, \x5, \x6, \x7, \t2, \t3, \t0, \t1, \s0, \s1, \s2, \s3 | |
330 | ||
331 | # Mul_GF16_2 \x0, \x1, \x2, \x3, \x4, \x5, \x6, \x7, \s3, \s2, \s1, \t1, \s0, \t0, \t2, \t3 | |
332 | &Mul_GF16_2(@x,@s[3,2,1],@t[1],@s[0],@t[0,2,3]); | |
333 | ||
334 | ### output msb > [x3,x2,x1,x0,x7,x6,x5,x4] < lsb | |
335 | } | |
336 | ||
337 | # AES linear components | |
338 | ||
339 | sub ShiftRows { | |
340 | my @x=@_[0..7]; | |
341 | my @t=@_[8..11]; | |
342 | my $mask=pop; | |
343 | $code.=<<___; | |
344 | vldmia $key!, {@t[0]-@t[3]} | |
345 | veor @t[0], @t[0], @x[0] | |
346 | veor @t[1], @t[1], @x[1] | |
347 | vtbl.8 `&Dlo(@x[0])`, {@t[0]}, `&Dlo($mask)` | |
348 | vtbl.8 `&Dhi(@x[0])`, {@t[0]}, `&Dhi($mask)` | |
349 | vldmia $key!, {@t[0]} | |
350 | veor @t[2], @t[2], @x[2] | |
351 | vtbl.8 `&Dlo(@x[1])`, {@t[1]}, `&Dlo($mask)` | |
352 | vtbl.8 `&Dhi(@x[1])`, {@t[1]}, `&Dhi($mask)` | |
353 | vldmia $key!, {@t[1]} | |
354 | veor @t[3], @t[3], @x[3] | |
355 | vtbl.8 `&Dlo(@x[2])`, {@t[2]}, `&Dlo($mask)` | |
356 | vtbl.8 `&Dhi(@x[2])`, {@t[2]}, `&Dhi($mask)` | |
357 | vldmia $key!, {@t[2]} | |
358 | vtbl.8 `&Dlo(@x[3])`, {@t[3]}, `&Dlo($mask)` | |
359 | vtbl.8 `&Dhi(@x[3])`, {@t[3]}, `&Dhi($mask)` | |
360 | vldmia $key!, {@t[3]} | |
361 | veor @t[0], @t[0], @x[4] | |
362 | veor @t[1], @t[1], @x[5] | |
363 | vtbl.8 `&Dlo(@x[4])`, {@t[0]}, `&Dlo($mask)` | |
364 | vtbl.8 `&Dhi(@x[4])`, {@t[0]}, `&Dhi($mask)` | |
365 | veor @t[2], @t[2], @x[6] | |
366 | vtbl.8 `&Dlo(@x[5])`, {@t[1]}, `&Dlo($mask)` | |
367 | vtbl.8 `&Dhi(@x[5])`, {@t[1]}, `&Dhi($mask)` | |
368 | veor @t[3], @t[3], @x[7] | |
369 | vtbl.8 `&Dlo(@x[6])`, {@t[2]}, `&Dlo($mask)` | |
370 | vtbl.8 `&Dhi(@x[6])`, {@t[2]}, `&Dhi($mask)` | |
371 | vtbl.8 `&Dlo(@x[7])`, {@t[3]}, `&Dlo($mask)` | |
372 | vtbl.8 `&Dhi(@x[7])`, {@t[3]}, `&Dhi($mask)` | |
373 | ___ | |
374 | } | |
375 | ||
376 | sub MixColumns { | |
377 | # modified to emit output in order suitable for feeding back to aesenc[last] | |
378 | my @x=@_[0..7]; | |
379 | my @t=@_[8..15]; | |
6f6a6130 | 380 | my $inv=@_[16]; # optional |
c4a52a6d AP |
381 | $code.=<<___; |
382 | vext.8 @t[0], @x[0], @x[0], #12 @ x0 <<< 32 | |
383 | vext.8 @t[1], @x[1], @x[1], #12 | |
384 | veor @x[0], @x[0], @t[0] @ x0 ^ (x0 <<< 32) | |
385 | vext.8 @t[2], @x[2], @x[2], #12 | |
386 | veor @x[1], @x[1], @t[1] | |
387 | vext.8 @t[3], @x[3], @x[3], #12 | |
388 | veor @x[2], @x[2], @t[2] | |
389 | vext.8 @t[4], @x[4], @x[4], #12 | |
390 | veor @x[3], @x[3], @t[3] | |
391 | vext.8 @t[5], @x[5], @x[5], #12 | |
392 | veor @x[4], @x[4], @t[4] | |
393 | vext.8 @t[6], @x[6], @x[6], #12 | |
394 | veor @x[5], @x[5], @t[5] | |
395 | vext.8 @t[7], @x[7], @x[7], #12 | |
396 | veor @x[6], @x[6], @t[6] | |
c4a52a6d AP |
397 | |
398 | veor @t[1], @t[1], @x[0] | |
4f16215b | 399 | veor @x[7], @x[7], @t[7] |
c4a52a6d | 400 | vext.8 @x[0], @x[0], @x[0], #8 @ (x0 ^ (x0 <<< 32)) <<< 64) |
4f16215b | 401 | veor @t[2], @t[2], @x[1] |
c4a52a6d AP |
402 | veor @t[0], @t[0], @x[7] |
403 | veor @t[1], @t[1], @x[7] | |
c4a52a6d AP |
404 | vext.8 @x[1], @x[1], @x[1], #8 |
405 | veor @t[5], @t[5], @x[4] | |
406 | veor @x[0], @x[0], @t[0] | |
407 | veor @t[6], @t[6], @x[5] | |
408 | veor @x[1], @x[1], @t[1] | |
409 | vext.8 @t[0], @x[4], @x[4], #8 | |
410 | veor @t[4], @t[4], @x[3] | |
411 | vext.8 @t[1], @x[5], @x[5], #8 | |
412 | veor @t[7], @t[7], @x[6] | |
413 | vext.8 @x[4], @x[3], @x[3], #8 | |
414 | veor @t[3], @t[3], @x[2] | |
415 | vext.8 @x[5], @x[7], @x[7], #8 | |
c4a52a6d | 416 | veor @t[4], @t[4], @x[7] |
4f16215b AP |
417 | vext.8 @x[3], @x[6], @x[6], #8 |
418 | veor @t[3], @t[3], @x[7] | |
c4a52a6d | 419 | vext.8 @x[6], @x[2], @x[2], #8 |
c4a52a6d | 420 | veor @x[7], @t[1], @t[5] |
6f6a6130 AP |
421 | ___ |
422 | $code.=<<___ if (!$inv); | |
a903e691 | 423 | veor @x[2], @t[0], @t[4] |
c4a52a6d AP |
424 | veor @x[4], @x[4], @t[3] |
425 | veor @x[5], @x[5], @t[7] | |
426 | veor @x[3], @x[3], @t[6] | |
427 | @ vmov @x[2], @t[0] | |
428 | veor @x[6], @x[6], @t[2] | |
429 | @ vmov @x[7], @t[1] | |
430 | ___ | |
6f6a6130 AP |
431 | $code.=<<___ if ($inv); |
432 | veor @t[3], @t[3], @x[4] | |
433 | veor @x[5], @x[5], @t[7] | |
434 | veor @x[2], @x[3], @t[6] | |
435 | veor @x[3], @t[0], @t[4] | |
436 | veor @x[4], @x[6], @t[2] | |
437 | vmov @x[6], @t[3] | |
438 | @ vmov @x[7], @t[1] | |
439 | ___ | |
c4a52a6d AP |
440 | } |
441 | ||
6f6a6130 | 442 | sub InvMixColumns_orig { |
c4a52a6d AP |
443 | my @x=@_[0..7]; |
444 | my @t=@_[8..15]; | |
445 | ||
446 | $code.=<<___; | |
447 | @ multiplication by 0x0e | |
448 | vext.8 @t[7], @x[7], @x[7], #12 | |
449 | vmov @t[2], @x[2] | |
c4a52a6d | 450 | veor @x[2], @x[2], @x[5] @ 2 5 |
a903e691 | 451 | veor @x[7], @x[7], @x[5] @ 7 5 |
c4a52a6d AP |
452 | vext.8 @t[0], @x[0], @x[0], #12 |
453 | vmov @t[5], @x[5] | |
454 | veor @x[5], @x[5], @x[0] @ 5 0 [1] | |
455 | veor @x[0], @x[0], @x[1] @ 0 1 | |
456 | vext.8 @t[1], @x[1], @x[1], #12 | |
457 | veor @x[1], @x[1], @x[2] @ 1 25 | |
458 | veor @x[0], @x[0], @x[6] @ 01 6 [2] | |
c4a52a6d | 459 | vext.8 @t[3], @x[3], @x[3], #12 |
a903e691 | 460 | veor @x[1], @x[1], @x[3] @ 125 3 [4] |
c4a52a6d AP |
461 | veor @x[2], @x[2], @x[0] @ 25 016 [3] |
462 | veor @x[3], @x[3], @x[7] @ 3 75 | |
463 | veor @x[7], @x[7], @x[6] @ 75 6 [0] | |
464 | vext.8 @t[6], @x[6], @x[6], #12 | |
465 | vmov @t[4], @x[4] | |
466 | veor @x[6], @x[6], @x[4] @ 6 4 | |
467 | veor @x[4], @x[4], @x[3] @ 4 375 [6] | |
468 | veor @x[3], @x[3], @x[7] @ 375 756=36 | |
469 | veor @x[6], @x[6], @t[5] @ 64 5 [7] | |
470 | veor @x[3], @x[3], @t[2] @ 36 2 | |
471 | vext.8 @t[5], @t[5], @t[5], #12 | |
472 | veor @x[3], @x[3], @t[4] @ 362 4 [5] | |
473 | ___ | |
474 | my @y = @x[7,5,0,2,1,3,4,6]; | |
475 | $code.=<<___; | |
476 | @ multiplication by 0x0b | |
477 | veor @y[1], @y[1], @y[0] | |
478 | veor @y[0], @y[0], @t[0] | |
c4a52a6d | 479 | vext.8 @t[2], @t[2], @t[2], #12 |
a903e691 | 480 | veor @y[1], @y[1], @t[1] |
c4a52a6d | 481 | veor @y[0], @y[0], @t[5] |
a903e691 | 482 | vext.8 @t[4], @t[4], @t[4], #12 |
c4a52a6d AP |
483 | veor @y[1], @y[1], @t[6] |
484 | veor @y[0], @y[0], @t[7] | |
c4a52a6d | 485 | veor @t[7], @t[7], @t[6] @ clobber t[7] |
c4a52a6d AP |
486 | |
487 | veor @y[3], @y[3], @t[0] | |
a903e691 | 488 | veor @y[1], @y[1], @y[0] |
c4a52a6d AP |
489 | vext.8 @t[0], @t[0], @t[0], #12 |
490 | veor @y[2], @y[2], @t[1] | |
491 | veor @y[4], @y[4], @t[1] | |
c4a52a6d | 492 | vext.8 @t[1], @t[1], @t[1], #12 |
a903e691 | 493 | veor @y[2], @y[2], @t[2] |
c4a52a6d AP |
494 | veor @y[3], @y[3], @t[2] |
495 | veor @y[5], @y[5], @t[2] | |
496 | veor @y[2], @y[2], @t[7] | |
497 | vext.8 @t[2], @t[2], @t[2], #12 | |
498 | veor @y[3], @y[3], @t[3] | |
499 | veor @y[6], @y[6], @t[3] | |
500 | veor @y[4], @y[4], @t[3] | |
c4a52a6d | 501 | veor @y[7], @y[7], @t[4] |
a903e691 | 502 | vext.8 @t[3], @t[3], @t[3], #12 |
c4a52a6d AP |
503 | veor @y[5], @y[5], @t[4] |
504 | veor @y[7], @y[7], @t[7] | |
4f16215b | 505 | veor @t[7], @t[7], @t[5] @ clobber t[7] even more |
c4a52a6d AP |
506 | veor @y[3], @y[3], @t[5] |
507 | veor @y[4], @y[4], @t[4] | |
c4a52a6d AP |
508 | |
509 | veor @y[5], @y[5], @t[7] | |
510 | vext.8 @t[4], @t[4], @t[4], #12 | |
511 | veor @y[6], @y[6], @t[7] | |
512 | veor @y[4], @y[4], @t[7] | |
513 | ||
514 | veor @t[7], @t[7], @t[5] | |
515 | vext.8 @t[5], @t[5], @t[5], #12 | |
c4a52a6d AP |
516 | |
517 | @ multiplication by 0x0d | |
518 | veor @y[4], @y[4], @y[7] | |
a903e691 | 519 | veor @t[7], @t[7], @t[6] @ restore t[7] |
c4a52a6d AP |
520 | veor @y[7], @y[7], @t[4] |
521 | vext.8 @t[6], @t[6], @t[6], #12 | |
522 | veor @y[2], @y[2], @t[0] | |
523 | veor @y[7], @y[7], @t[5] | |
c4a52a6d | 524 | vext.8 @t[7], @t[7], @t[7], #12 |
a903e691 | 525 | veor @y[2], @y[2], @t[2] |
c4a52a6d AP |
526 | |
527 | veor @y[3], @y[3], @y[1] | |
528 | veor @y[1], @y[1], @t[1] | |
529 | veor @y[0], @y[0], @t[0] | |
530 | veor @y[3], @y[3], @t[0] | |
531 | veor @y[1], @y[1], @t[5] | |
532 | veor @y[0], @y[0], @t[5] | |
c4a52a6d | 533 | vext.8 @t[0], @t[0], @t[0], #12 |
a903e691 | 534 | veor @y[1], @y[1], @t[7] |
c4a52a6d AP |
535 | veor @y[0], @y[0], @t[6] |
536 | veor @y[3], @y[3], @y[1] | |
537 | veor @y[4], @y[4], @t[1] | |
538 | vext.8 @t[1], @t[1], @t[1], #12 | |
539 | ||
540 | veor @y[7], @y[7], @t[7] | |
541 | veor @y[4], @y[4], @t[2] | |
542 | veor @y[5], @y[5], @t[2] | |
c4a52a6d AP |
543 | veor @y[2], @y[2], @t[6] |
544 | veor @t[6], @t[6], @t[3] @ clobber t[6] | |
a903e691 | 545 | vext.8 @t[2], @t[2], @t[2], #12 |
c4a52a6d AP |
546 | veor @y[4], @y[4], @y[7] |
547 | veor @y[3], @y[3], @t[6] | |
548 | ||
549 | veor @y[6], @y[6], @t[6] | |
550 | veor @y[5], @y[5], @t[5] | |
551 | vext.8 @t[5], @t[5], @t[5], #12 | |
552 | veor @y[6], @y[6], @t[4] | |
553 | vext.8 @t[4], @t[4], @t[4], #12 | |
554 | veor @y[5], @y[5], @t[6] | |
555 | veor @y[6], @y[6], @t[7] | |
556 | vext.8 @t[7], @t[7], @t[7], #12 | |
557 | veor @t[6], @t[6], @t[3] @ restore t[6] | |
558 | vext.8 @t[3], @t[3], @t[3], #12 | |
559 | ||
560 | @ multiplication by 0x09 | |
561 | veor @y[4], @y[4], @y[1] | |
562 | veor @t[1], @t[1], @y[1] @ t[1]=y[1] | |
563 | veor @t[0], @t[0], @t[5] @ clobber t[0] | |
564 | vext.8 @t[6], @t[6], @t[6], #12 | |
565 | veor @t[1], @t[1], @t[5] | |
566 | veor @y[3], @y[3], @t[0] | |
567 | veor @t[0], @t[0], @y[0] @ t[0]=y[0] | |
568 | veor @t[1], @t[1], @t[6] | |
569 | veor @t[6], @t[6], @t[7] @ clobber t[6] | |
570 | veor @y[4], @y[4], @t[1] | |
571 | veor @y[7], @y[7], @t[4] | |
c4a52a6d | 572 | veor @y[6], @y[6], @t[3] |
c4a52a6d | 573 | veor @y[5], @y[5], @t[2] |
a903e691 AP |
574 | veor @t[4], @t[4], @y[4] @ t[4]=y[4] |
575 | veor @t[3], @t[3], @y[3] @ t[3]=y[3] | |
576 | veor @t[5], @t[5], @y[5] @ t[5]=y[5] | |
c4a52a6d AP |
577 | veor @t[2], @t[2], @y[2] @ t[2]=y[2] |
578 | veor @t[3], @t[3], @t[7] | |
c4a52a6d AP |
579 | veor @XMM[5], @t[5], @t[6] |
580 | veor @XMM[6], @t[6], @y[6] @ t[6]=y[6] | |
581 | veor @XMM[2], @t[2], @t[6] | |
582 | veor @XMM[7], @t[7], @y[7] @ t[7]=y[7] | |
583 | ||
584 | vmov @XMM[0], @t[0] | |
585 | vmov @XMM[1], @t[1] | |
586 | @ vmov @XMM[2], @t[2] | |
587 | vmov @XMM[3], @t[3] | |
588 | vmov @XMM[4], @t[4] | |
589 | @ vmov @XMM[5], @t[5] | |
590 | @ vmov @XMM[6], @t[6] | |
591 | @ vmov @XMM[7], @t[7] | |
592 | ___ | |
593 | } | |
594 | ||
6f6a6130 AP |
595 | sub InvMixColumns { |
596 | my @x=@_[0..7]; | |
597 | my @t=@_[8..15]; | |
598 | ||
599 | # Thanks to Jussi Kivilinna for providing pointer to | |
600 | # | |
601 | # | 0e 0b 0d 09 | | 02 03 01 01 | | 05 00 04 00 | | |
602 | # | 09 0e 0b 0d | = | 01 02 03 01 | x | 00 05 00 04 | | |
603 | # | 0d 09 0e 0b | | 01 01 02 03 | | 04 00 05 00 | | |
604 | # | 0b 0d 09 0e | | 03 01 01 02 | | 00 04 00 05 | | |
605 | ||
606 | $code.=<<___; | |
607 | @ multiplication by 0x05-0x00-0x04-0x00 | |
608 | vext.8 @t[0], @x[0], @x[0], #8 | |
609 | vext.8 @t[6], @x[6], @x[6], #8 | |
610 | vext.8 @t[7], @x[7], @x[7], #8 | |
611 | veor @t[0], @t[0], @x[0] | |
612 | vext.8 @t[1], @x[1], @x[1], #8 | |
613 | veor @t[6], @t[6], @x[6] | |
614 | vext.8 @t[2], @x[2], @x[2], #8 | |
615 | veor @t[7], @t[7], @x[7] | |
616 | vext.8 @t[3], @x[3], @x[3], #8 | |
617 | veor @t[1], @t[1], @x[1] | |
618 | vext.8 @t[4], @x[4], @x[4], #8 | |
619 | veor @t[2], @t[2], @x[2] | |
620 | vext.8 @t[5], @x[5], @x[5], #8 | |
621 | veor @t[3], @t[3], @x[3] | |
622 | veor @t[4], @t[4], @x[4] | |
623 | veor @t[5], @t[5], @x[5] | |
624 | ||
625 | veor @x[0], @x[0], @t[6] | |
626 | veor @x[1], @x[1], @t[6] | |
627 | veor @x[2], @x[2], @t[0] | |
628 | veor @x[4], @x[4], @t[2] | |
629 | veor @x[3], @x[3], @t[1] | |
630 | veor @x[1], @x[1], @t[7] | |
631 | veor @x[2], @x[2], @t[7] | |
632 | veor @x[4], @x[4], @t[6] | |
633 | veor @x[5], @x[5], @t[3] | |
634 | veor @x[3], @x[3], @t[6] | |
635 | veor @x[6], @x[6], @t[4] | |
636 | veor @x[4], @x[4], @t[7] | |
637 | veor @x[5], @x[5], @t[7] | |
638 | veor @x[7], @x[7], @t[5] | |
639 | ___ | |
640 | &MixColumns (@x,@t,1); # flipped 2<->3 and 4<->6 | |
641 | } | |
642 | ||
c4a52a6d AP |
643 | sub swapmove { |
644 | my ($a,$b,$n,$mask,$t)=@_; | |
645 | $code.=<<___; | |
646 | vshr.u64 $t, $b, #$n | |
647 | veor $t, $t, $a | |
648 | vand $t, $t, $mask | |
649 | veor $a, $a, $t | |
650 | vshl.u64 $t, $t, #$n | |
651 | veor $b, $b, $t | |
652 | ___ | |
653 | } | |
654 | sub swapmove2x { | |
655 | my ($a0,$b0,$a1,$b1,$n,$mask,$t0,$t1)=@_; | |
656 | $code.=<<___; | |
657 | vshr.u64 $t0, $b0, #$n | |
658 | vshr.u64 $t1, $b1, #$n | |
659 | veor $t0, $t0, $a0 | |
660 | veor $t1, $t1, $a1 | |
661 | vand $t0, $t0, $mask | |
662 | vand $t1, $t1, $mask | |
663 | veor $a0, $a0, $t0 | |
664 | vshl.u64 $t0, $t0, #$n | |
665 | veor $a1, $a1, $t1 | |
666 | vshl.u64 $t1, $t1, #$n | |
667 | veor $b0, $b0, $t0 | |
668 | veor $b1, $b1, $t1 | |
669 | ___ | |
670 | } | |
671 | ||
672 | sub bitslice { | |
673 | my @x=reverse(@_[0..7]); | |
674 | my ($t0,$t1,$t2,$t3)=@_[8..11]; | |
675 | $code.=<<___; | |
676 | vmov.i8 $t0,#0x55 @ compose .LBS0 | |
677 | vmov.i8 $t1,#0x33 @ compose .LBS1 | |
678 | ___ | |
679 | &swapmove2x(@x[0,1,2,3],1,$t0,$t2,$t3); | |
680 | &swapmove2x(@x[4,5,6,7],1,$t0,$t2,$t3); | |
681 | $code.=<<___; | |
682 | vmov.i8 $t0,#0x0f @ compose .LBS2 | |
683 | ___ | |
684 | &swapmove2x(@x[0,2,1,3],2,$t1,$t2,$t3); | |
685 | &swapmove2x(@x[4,6,5,7],2,$t1,$t2,$t3); | |
686 | ||
687 | &swapmove2x(@x[0,4,1,5],4,$t0,$t2,$t3); | |
688 | &swapmove2x(@x[2,6,3,7],4,$t0,$t2,$t3); | |
689 | } | |
690 | ||
691 | $code.=<<___; | |
e0202d94 AP |
692 | #ifndef __KERNEL__ |
693 | # include "arm_arch.h" | |
694 | ||
695 | # define VFP_ABI_PUSH vstmdb sp!,{d8-d15} | |
696 | # define VFP_ABI_POP vldmia sp!,{d8-d15} | |
697 | # define VFP_ABI_FRAME 0x40 | |
698 | #else | |
699 | # define VFP_ABI_PUSH | |
700 | # define VFP_ABI_POP | |
701 | # define VFP_ABI_FRAME 0 | |
702 | # define BSAES_ASM_EXTENDED_KEY | |
703 | # define XTS_CHAIN_TWEAK | |
704 | # define __ARM_ARCH__ __LINUX_ARM_ARCH__ | |
c1669e1c | 705 | # define __ARM_MAX_ARCH__ __LINUX_ARM_ARCH__ |
e0202d94 AP |
706 | #endif |
707 | ||
708 | #ifdef __thumb__ | |
709 | # define adrl adr | |
710 | #endif | |
75fe4223 | 711 | |
c1669e1c AP |
712 | #if __ARM_MAX_ARCH__>=7 |
713 | .arch armv7-a | |
714 | .fpu neon | |
715 | ||
c4a52a6d | 716 | .text |
e0202d94 | 717 | .syntax unified @ ARMv7-capable assembler is expected to handle this |
066caf05 AP |
718 | #ifdef __thumb2__ |
719 | .thumb | |
720 | #else | |
721 | .code 32 | |
722 | #endif | |
723 | ||
c4a52a6d AP |
724 | .type _bsaes_decrypt8,%function |
725 | .align 4 | |
726 | _bsaes_decrypt8: | |
e0202d94 | 727 | adr $const,_bsaes_decrypt8 |
c4a52a6d AP |
728 | vldmia $key!, {@XMM[9]} @ round 0 key |
729 | add $const,$const,#.LM0ISR-_bsaes_decrypt8 | |
730 | ||
731 | vldmia $const!, {@XMM[8]} @ .LM0ISR | |
732 | veor @XMM[10], @XMM[0], @XMM[9] @ xor with round0 key | |
733 | veor @XMM[11], @XMM[1], @XMM[9] | |
734 | vtbl.8 `&Dlo(@XMM[0])`, {@XMM[10]}, `&Dlo(@XMM[8])` | |
735 | vtbl.8 `&Dhi(@XMM[0])`, {@XMM[10]}, `&Dhi(@XMM[8])` | |
736 | veor @XMM[12], @XMM[2], @XMM[9] | |
737 | vtbl.8 `&Dlo(@XMM[1])`, {@XMM[11]}, `&Dlo(@XMM[8])` | |
738 | vtbl.8 `&Dhi(@XMM[1])`, {@XMM[11]}, `&Dhi(@XMM[8])` | |
739 | veor @XMM[13], @XMM[3], @XMM[9] | |
740 | vtbl.8 `&Dlo(@XMM[2])`, {@XMM[12]}, `&Dlo(@XMM[8])` | |
741 | vtbl.8 `&Dhi(@XMM[2])`, {@XMM[12]}, `&Dhi(@XMM[8])` | |
742 | veor @XMM[14], @XMM[4], @XMM[9] | |
743 | vtbl.8 `&Dlo(@XMM[3])`, {@XMM[13]}, `&Dlo(@XMM[8])` | |
744 | vtbl.8 `&Dhi(@XMM[3])`, {@XMM[13]}, `&Dhi(@XMM[8])` | |
745 | veor @XMM[15], @XMM[5], @XMM[9] | |
746 | vtbl.8 `&Dlo(@XMM[4])`, {@XMM[14]}, `&Dlo(@XMM[8])` | |
747 | vtbl.8 `&Dhi(@XMM[4])`, {@XMM[14]}, `&Dhi(@XMM[8])` | |
748 | veor @XMM[10], @XMM[6], @XMM[9] | |
749 | vtbl.8 `&Dlo(@XMM[5])`, {@XMM[15]}, `&Dlo(@XMM[8])` | |
750 | vtbl.8 `&Dhi(@XMM[5])`, {@XMM[15]}, `&Dhi(@XMM[8])` | |
751 | veor @XMM[11], @XMM[7], @XMM[9] | |
752 | vtbl.8 `&Dlo(@XMM[6])`, {@XMM[10]}, `&Dlo(@XMM[8])` | |
753 | vtbl.8 `&Dhi(@XMM[6])`, {@XMM[10]}, `&Dhi(@XMM[8])` | |
754 | vtbl.8 `&Dlo(@XMM[7])`, {@XMM[11]}, `&Dlo(@XMM[8])` | |
755 | vtbl.8 `&Dhi(@XMM[7])`, {@XMM[11]}, `&Dhi(@XMM[8])` | |
756 | ___ | |
757 | &bitslice (@XMM[0..7, 8..11]); | |
758 | $code.=<<___; | |
759 | sub $rounds,$rounds,#1 | |
760 | b .Ldec_sbox | |
761 | .align 4 | |
762 | .Ldec_loop: | |
763 | ___ | |
764 | &ShiftRows (@XMM[0..7, 8..12]); | |
765 | $code.=".Ldec_sbox:\n"; | |
766 | &InvSbox (@XMM[0..7, 8..15]); | |
767 | $code.=<<___; | |
768 | subs $rounds,$rounds,#1 | |
769 | bcc .Ldec_done | |
770 | ___ | |
771 | &InvMixColumns (@XMM[0,1,6,4,2,7,3,5, 8..15]); | |
772 | $code.=<<___; | |
773 | vldmia $const, {@XMM[12]} @ .LISR | |
e0202d94 | 774 | ite eq @ Thumb2 thing, sanity check in ARM |
c4a52a6d AP |
775 | addeq $const,$const,#0x10 |
776 | bne .Ldec_loop | |
777 | vldmia $const, {@XMM[12]} @ .LISRM0 | |
778 | b .Ldec_loop | |
779 | .align 4 | |
780 | .Ldec_done: | |
781 | ___ | |
782 | &bitslice (@XMM[0,1,6,4,2,7,3,5, 8..11]); | |
783 | $code.=<<___; | |
784 | vldmia $key, {@XMM[8]} @ last round key | |
785 | veor @XMM[6], @XMM[6], @XMM[8] | |
786 | veor @XMM[4], @XMM[4], @XMM[8] | |
787 | veor @XMM[2], @XMM[2], @XMM[8] | |
788 | veor @XMM[7], @XMM[7], @XMM[8] | |
789 | veor @XMM[3], @XMM[3], @XMM[8] | |
790 | veor @XMM[5], @XMM[5], @XMM[8] | |
791 | veor @XMM[0], @XMM[0], @XMM[8] | |
792 | veor @XMM[1], @XMM[1], @XMM[8] | |
793 | bx lr | |
794 | .size _bsaes_decrypt8,.-_bsaes_decrypt8 | |
795 | ||
796 | .type _bsaes_const,%object | |
797 | .align 6 | |
798 | _bsaes_const: | |
799 | .LM0ISR: @ InvShiftRows constants | |
800 | .quad 0x0a0e0206070b0f03, 0x0004080c0d010509 | |
801 | .LISR: | |
802 | .quad 0x0504070602010003, 0x0f0e0d0c080b0a09 | |
803 | .LISRM0: | |
804 | .quad 0x01040b0e0205080f, 0x0306090c00070a0d | |
805 | .LM0SR: @ ShiftRows constants | |
806 | .quad 0x0a0e02060f03070b, 0x0004080c05090d01 | |
807 | .LSR: | |
808 | .quad 0x0504070600030201, 0x0f0e0d0c0a09080b | |
809 | .LSRM0: | |
810 | .quad 0x0304090e00050a0f, 0x01060b0c0207080d | |
811 | .LM0: | |
812 | .quad 0x02060a0e03070b0f, 0x0004080c0105090d | |
9575d1a9 | 813 | .LREVM0SR: |
612f4e23 | 814 | .quad 0x090d01050c000408, 0x03070b0f060a0e02 |
c4a52a6d AP |
815 | .asciz "Bit-sliced AES for NEON, CRYPTOGAMS by <appro\@openssl.org>" |
816 | .align 6 | |
817 | .size _bsaes_const,.-_bsaes_const | |
818 | ||
819 | .type _bsaes_encrypt8,%function | |
820 | .align 4 | |
821 | _bsaes_encrypt8: | |
e0202d94 | 822 | adr $const,_bsaes_encrypt8 |
c4a52a6d AP |
823 | vldmia $key!, {@XMM[9]} @ round 0 key |
824 | sub $const,$const,#_bsaes_encrypt8-.LM0SR | |
825 | ||
826 | vldmia $const!, {@XMM[8]} @ .LM0SR | |
9575d1a9 | 827 | _bsaes_encrypt8_alt: |
c4a52a6d AP |
828 | veor @XMM[10], @XMM[0], @XMM[9] @ xor with round0 key |
829 | veor @XMM[11], @XMM[1], @XMM[9] | |
830 | vtbl.8 `&Dlo(@XMM[0])`, {@XMM[10]}, `&Dlo(@XMM[8])` | |
831 | vtbl.8 `&Dhi(@XMM[0])`, {@XMM[10]}, `&Dhi(@XMM[8])` | |
832 | veor @XMM[12], @XMM[2], @XMM[9] | |
833 | vtbl.8 `&Dlo(@XMM[1])`, {@XMM[11]}, `&Dlo(@XMM[8])` | |
834 | vtbl.8 `&Dhi(@XMM[1])`, {@XMM[11]}, `&Dhi(@XMM[8])` | |
835 | veor @XMM[13], @XMM[3], @XMM[9] | |
836 | vtbl.8 `&Dlo(@XMM[2])`, {@XMM[12]}, `&Dlo(@XMM[8])` | |
837 | vtbl.8 `&Dhi(@XMM[2])`, {@XMM[12]}, `&Dhi(@XMM[8])` | |
838 | veor @XMM[14], @XMM[4], @XMM[9] | |
839 | vtbl.8 `&Dlo(@XMM[3])`, {@XMM[13]}, `&Dlo(@XMM[8])` | |
840 | vtbl.8 `&Dhi(@XMM[3])`, {@XMM[13]}, `&Dhi(@XMM[8])` | |
841 | veor @XMM[15], @XMM[5], @XMM[9] | |
842 | vtbl.8 `&Dlo(@XMM[4])`, {@XMM[14]}, `&Dlo(@XMM[8])` | |
843 | vtbl.8 `&Dhi(@XMM[4])`, {@XMM[14]}, `&Dhi(@XMM[8])` | |
844 | veor @XMM[10], @XMM[6], @XMM[9] | |
845 | vtbl.8 `&Dlo(@XMM[5])`, {@XMM[15]}, `&Dlo(@XMM[8])` | |
846 | vtbl.8 `&Dhi(@XMM[5])`, {@XMM[15]}, `&Dhi(@XMM[8])` | |
847 | veor @XMM[11], @XMM[7], @XMM[9] | |
848 | vtbl.8 `&Dlo(@XMM[6])`, {@XMM[10]}, `&Dlo(@XMM[8])` | |
849 | vtbl.8 `&Dhi(@XMM[6])`, {@XMM[10]}, `&Dhi(@XMM[8])` | |
850 | vtbl.8 `&Dlo(@XMM[7])`, {@XMM[11]}, `&Dlo(@XMM[8])` | |
851 | vtbl.8 `&Dhi(@XMM[7])`, {@XMM[11]}, `&Dhi(@XMM[8])` | |
852 | _bsaes_encrypt8_bitslice: | |
853 | ___ | |
854 | &bitslice (@XMM[0..7, 8..11]); | |
855 | $code.=<<___; | |
856 | sub $rounds,$rounds,#1 | |
857 | b .Lenc_sbox | |
858 | .align 4 | |
859 | .Lenc_loop: | |
860 | ___ | |
861 | &ShiftRows (@XMM[0..7, 8..12]); | |
862 | $code.=".Lenc_sbox:\n"; | |
863 | &Sbox (@XMM[0..7, 8..15]); | |
864 | $code.=<<___; | |
865 | subs $rounds,$rounds,#1 | |
866 | bcc .Lenc_done | |
867 | ___ | |
868 | &MixColumns (@XMM[0,1,4,6,3,7,2,5, 8..15]); | |
869 | $code.=<<___; | |
870 | vldmia $const, {@XMM[12]} @ .LSR | |
e0202d94 | 871 | ite eq @ Thumb2 thing, samity check in ARM |
c4a52a6d AP |
872 | addeq $const,$const,#0x10 |
873 | bne .Lenc_loop | |
874 | vldmia $const, {@XMM[12]} @ .LSRM0 | |
875 | b .Lenc_loop | |
876 | .align 4 | |
877 | .Lenc_done: | |
878 | ___ | |
879 | # output in lsb > [t0, t1, t4, t6, t3, t7, t2, t5] < msb | |
880 | &bitslice (@XMM[0,1,4,6,3,7,2,5, 8..11]); | |
881 | $code.=<<___; | |
882 | vldmia $key, {@XMM[8]} @ last round key | |
883 | veor @XMM[4], @XMM[4], @XMM[8] | |
884 | veor @XMM[6], @XMM[6], @XMM[8] | |
885 | veor @XMM[3], @XMM[3], @XMM[8] | |
886 | veor @XMM[7], @XMM[7], @XMM[8] | |
887 | veor @XMM[2], @XMM[2], @XMM[8] | |
888 | veor @XMM[5], @XMM[5], @XMM[8] | |
889 | veor @XMM[0], @XMM[0], @XMM[8] | |
890 | veor @XMM[1], @XMM[1], @XMM[8] | |
891 | bx lr | |
892 | .size _bsaes_encrypt8,.-_bsaes_encrypt8 | |
893 | ___ | |
894 | } | |
895 | { | |
896 | my ($out,$inp,$rounds,$const)=("r12","r4","r5","r6"); | |
897 | ||
898 | sub bitslice_key { | |
899 | my @x=reverse(@_[0..7]); | |
900 | my ($bs0,$bs1,$bs2,$t2,$t3)=@_[8..12]; | |
901 | ||
902 | &swapmove (@x[0,1],1,$bs0,$t2,$t3); | |
903 | $code.=<<___; | |
904 | @ &swapmove(@x[2,3],1,$t0,$t2,$t3); | |
905 | vmov @x[2], @x[0] | |
906 | vmov @x[3], @x[1] | |
907 | ___ | |
908 | #&swapmove2x(@x[4,5,6,7],1,$t0,$t2,$t3); | |
909 | ||
910 | &swapmove2x (@x[0,2,1,3],2,$bs1,$t2,$t3); | |
911 | $code.=<<___; | |
912 | @ &swapmove2x(@x[4,6,5,7],2,$t1,$t2,$t3); | |
913 | vmov @x[4], @x[0] | |
914 | vmov @x[6], @x[2] | |
915 | vmov @x[5], @x[1] | |
916 | vmov @x[7], @x[3] | |
917 | ___ | |
918 | &swapmove2x (@x[0,4,1,5],4,$bs2,$t2,$t3); | |
919 | &swapmove2x (@x[2,6,3,7],4,$bs2,$t2,$t3); | |
920 | } | |
921 | ||
922 | $code.=<<___; | |
923 | .type _bsaes_key_convert,%function | |
924 | .align 4 | |
925 | _bsaes_key_convert: | |
e0202d94 | 926 | adr $const,_bsaes_key_convert |
c4a52a6d AP |
927 | vld1.8 {@XMM[7]}, [$inp]! @ load round 0 key |
928 | sub $const,$const,#_bsaes_key_convert-.LM0 | |
929 | vld1.8 {@XMM[15]}, [$inp]! @ load round 1 key | |
930 | ||
442c9f13 AP |
931 | vmov.i8 @XMM[8], #0x01 @ bit masks |
932 | vmov.i8 @XMM[9], #0x02 | |
933 | vmov.i8 @XMM[10], #0x04 | |
934 | vmov.i8 @XMM[11], #0x08 | |
935 | vmov.i8 @XMM[12], #0x10 | |
936 | vmov.i8 @XMM[13], #0x20 | |
937 | vldmia $const, {@XMM[14]} @ .LM0 | |
c4a52a6d AP |
938 | |
939 | #ifdef __ARMEL__ | |
940 | vrev32.8 @XMM[7], @XMM[7] | |
941 | vrev32.8 @XMM[15], @XMM[15] | |
942 | #endif | |
943 | sub $rounds,$rounds,#1 | |
944 | vstmia $out!, {@XMM[7]} @ save round 0 key | |
945 | b .Lkey_loop | |
946 | ||
947 | .align 4 | |
948 | .Lkey_loop: | |
442c9f13 AP |
949 | vtbl.8 `&Dlo(@XMM[7])`,{@XMM[15]},`&Dlo(@XMM[14])` |
950 | vtbl.8 `&Dhi(@XMM[7])`,{@XMM[15]},`&Dhi(@XMM[14])` | |
951 | vmov.i8 @XMM[6], #0x40 | |
952 | vmov.i8 @XMM[15], #0x80 | |
953 | ||
954 | vtst.8 @XMM[0], @XMM[7], @XMM[8] | |
955 | vtst.8 @XMM[1], @XMM[7], @XMM[9] | |
956 | vtst.8 @XMM[2], @XMM[7], @XMM[10] | |
957 | vtst.8 @XMM[3], @XMM[7], @XMM[11] | |
958 | vtst.8 @XMM[4], @XMM[7], @XMM[12] | |
959 | vtst.8 @XMM[5], @XMM[7], @XMM[13] | |
960 | vtst.8 @XMM[6], @XMM[7], @XMM[6] | |
961 | vtst.8 @XMM[7], @XMM[7], @XMM[15] | |
c4a52a6d | 962 | vld1.8 {@XMM[15]}, [$inp]! @ load next round key |
442c9f13 | 963 | vmvn @XMM[0], @XMM[0] @ "pnot" |
c4a52a6d | 964 | vmvn @XMM[1], @XMM[1] |
442c9f13 AP |
965 | vmvn @XMM[5], @XMM[5] |
966 | vmvn @XMM[6], @XMM[6] | |
c4a52a6d AP |
967 | #ifdef __ARMEL__ |
968 | vrev32.8 @XMM[15], @XMM[15] | |
969 | #endif | |
970 | subs $rounds,$rounds,#1 | |
971 | vstmia $out!,{@XMM[0]-@XMM[7]} @ write bit-sliced round key | |
972 | bne .Lkey_loop | |
973 | ||
974 | vmov.i8 @XMM[7],#0x63 @ compose .L63 | |
975 | @ don't save last round key | |
976 | bx lr | |
977 | .size _bsaes_key_convert,.-_bsaes_key_convert | |
978 | ___ | |
979 | } | |
980 | ||
9575d1a9 | 981 | if (0) { # following four functions are unsupported interface |
c4a52a6d AP |
982 | # used for benchmarking... |
983 | $code.=<<___; | |
984 | .globl bsaes_enc_key_convert | |
985 | .type bsaes_enc_key_convert,%function | |
986 | .align 4 | |
987 | bsaes_enc_key_convert: | |
988 | stmdb sp!,{r4-r6,lr} | |
989 | vstmdb sp!,{d8-d15} @ ABI specification says so | |
990 | ||
991 | ldr r5,[$inp,#240] @ pass rounds | |
992 | mov r4,$inp @ pass key | |
993 | mov r12,$out @ pass key schedule | |
994 | bl _bsaes_key_convert | |
995 | veor @XMM[7],@XMM[7],@XMM[15] @ fix up last round key | |
996 | vstmia r12, {@XMM[7]} @ save last round key | |
997 | ||
998 | vldmia sp!,{d8-d15} | |
999 | ldmia sp!,{r4-r6,pc} | |
1000 | .size bsaes_enc_key_convert,.-bsaes_enc_key_convert | |
1001 | ||
1002 | .globl bsaes_encrypt_128 | |
1003 | .type bsaes_encrypt_128,%function | |
1004 | .align 4 | |
1005 | bsaes_encrypt_128: | |
1006 | stmdb sp!,{r4-r6,lr} | |
1007 | vstmdb sp!,{d8-d15} @ ABI specification says so | |
1008 | .Lenc128_loop: | |
442c9f13 AP |
1009 | vld1.8 {@XMM[0]-@XMM[1]}, [$inp]! @ load input |
1010 | vld1.8 {@XMM[2]-@XMM[3]}, [$inp]! | |
c4a52a6d | 1011 | mov r4,$key @ pass the key |
442c9f13 | 1012 | vld1.8 {@XMM[4]-@XMM[5]}, [$inp]! |
c4a52a6d | 1013 | mov r5,#10 @ pass rounds |
442c9f13 | 1014 | vld1.8 {@XMM[6]-@XMM[7]}, [$inp]! |
c4a52a6d AP |
1015 | |
1016 | bl _bsaes_encrypt8 | |
1017 | ||
442c9f13 | 1018 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! @ write output |
c4a52a6d AP |
1019 | vst1.8 {@XMM[4]}, [$out]! |
1020 | vst1.8 {@XMM[6]}, [$out]! | |
1021 | vst1.8 {@XMM[3]}, [$out]! | |
1022 | vst1.8 {@XMM[7]}, [$out]! | |
1023 | vst1.8 {@XMM[2]}, [$out]! | |
1024 | subs $len,$len,#0x80 | |
1025 | vst1.8 {@XMM[5]}, [$out]! | |
1026 | bhi .Lenc128_loop | |
1027 | ||
1028 | vldmia sp!,{d8-d15} | |
1029 | ldmia sp!,{r4-r6,pc} | |
1030 | .size bsaes_encrypt_128,.-bsaes_encrypt_128 | |
1031 | ||
1032 | .globl bsaes_dec_key_convert | |
1033 | .type bsaes_dec_key_convert,%function | |
1034 | .align 4 | |
1035 | bsaes_dec_key_convert: | |
1036 | stmdb sp!,{r4-r6,lr} | |
1037 | vstmdb sp!,{d8-d15} @ ABI specification says so | |
1038 | ||
1039 | ldr r5,[$inp,#240] @ pass rounds | |
1040 | mov r4,$inp @ pass key | |
1041 | mov r12,$out @ pass key schedule | |
1042 | bl _bsaes_key_convert | |
1043 | vldmia $out, {@XMM[6]} | |
1044 | vstmia r12, {@XMM[15]} @ save last round key | |
1045 | veor @XMM[7], @XMM[7], @XMM[6] @ fix up round 0 key | |
1046 | vstmia $out, {@XMM[7]} | |
1047 | ||
1048 | vldmia sp!,{d8-d15} | |
1049 | ldmia sp!,{r4-r6,pc} | |
1050 | .size bsaes_dec_key_convert,.-bsaes_dec_key_convert | |
1051 | ||
1052 | .globl bsaes_decrypt_128 | |
1053 | .type bsaes_decrypt_128,%function | |
1054 | .align 4 | |
1055 | bsaes_decrypt_128: | |
1056 | stmdb sp!,{r4-r6,lr} | |
1057 | vstmdb sp!,{d8-d15} @ ABI specification says so | |
1058 | .Ldec128_loop: | |
442c9f13 AP |
1059 | vld1.8 {@XMM[0]-@XMM[1]}, [$inp]! @ load input |
1060 | vld1.8 {@XMM[2]-@XMM[3]}, [$inp]! | |
c4a52a6d | 1061 | mov r4,$key @ pass the key |
442c9f13 | 1062 | vld1.8 {@XMM[4]-@XMM[5]}, [$inp]! |
c4a52a6d | 1063 | mov r5,#10 @ pass rounds |
442c9f13 | 1064 | vld1.8 {@XMM[6]-@XMM[7]}, [$inp]! |
c4a52a6d AP |
1065 | |
1066 | bl _bsaes_decrypt8 | |
1067 | ||
442c9f13 | 1068 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! @ write output |
c4a52a6d AP |
1069 | vst1.8 {@XMM[6]}, [$out]! |
1070 | vst1.8 {@XMM[4]}, [$out]! | |
1071 | vst1.8 {@XMM[2]}, [$out]! | |
1072 | vst1.8 {@XMM[7]}, [$out]! | |
1073 | vst1.8 {@XMM[3]}, [$out]! | |
1074 | subs $len,$len,#0x80 | |
1075 | vst1.8 {@XMM[5]}, [$out]! | |
1076 | bhi .Ldec128_loop | |
1077 | ||
1078 | vldmia sp!,{d8-d15} | |
1079 | ldmia sp!,{r4-r6,pc} | |
1080 | .size bsaes_decrypt_128,.-bsaes_decrypt_128 | |
1081 | ___ | |
1082 | } | |
9575d1a9 AP |
1083 | { |
1084 | my ($inp,$out,$len,$key, $ivp,$fp,$rounds)=map("r$_",(0..3,8..10)); | |
1085 | my ($keysched)=("sp"); | |
1086 | ||
1087 | $code.=<<___; | |
1088 | .extern AES_cbc_encrypt | |
1089 | .extern AES_decrypt | |
1090 | ||
1091 | .global bsaes_cbc_encrypt | |
1092 | .type bsaes_cbc_encrypt,%function | |
1093 | .align 5 | |
1094 | bsaes_cbc_encrypt: | |
e0202d94 | 1095 | #ifndef __KERNEL__ |
9575d1a9 | 1096 | cmp $len, #128 |
e0202d94 | 1097 | #ifndef __thumb__ |
9575d1a9 | 1098 | blo AES_cbc_encrypt |
e0202d94 AP |
1099 | #else |
1100 | bhs 1f | |
1101 | b AES_cbc_encrypt | |
1102 | 1: | |
1103 | #endif | |
1104 | #endif | |
9575d1a9 AP |
1105 | |
1106 | @ it is up to the caller to make sure we are called with enc == 0 | |
1107 | ||
e0202d94 | 1108 | mov ip, sp |
9575d1a9 | 1109 | stmdb sp!, {r4-r10, lr} |
e0202d94 AP |
1110 | VFP_ABI_PUSH |
1111 | ldr $ivp, [ip] @ IV is 1st arg on the stack | |
9575d1a9 AP |
1112 | mov $len, $len, lsr#4 @ len in 16 byte blocks |
1113 | sub sp, #0x10 @ scratch space to carry over the IV | |
1114 | mov $fp, sp @ save sp | |
1115 | ||
9575d1a9 | 1116 | ldr $rounds, [$key, #240] @ get # of rounds |
e0202d94 AP |
1117 | #ifndef BSAES_ASM_EXTENDED_KEY |
1118 | @ allocate the key schedule on the stack | |
1119 | sub r12, sp, $rounds, lsl#7 @ 128 bytes per inner round key | |
1120 | add r12, #`128-32` @ sifze of bit-slices key schedule | |
9575d1a9 AP |
1121 | |
1122 | @ populate the key schedule | |
1123 | mov r4, $key @ pass key | |
1124 | mov r5, $rounds @ pass # of rounds | |
e0202d94 | 1125 | mov sp, r12 @ sp is $keysched |
9575d1a9 AP |
1126 | bl _bsaes_key_convert |
1127 | vldmia $keysched, {@XMM[6]} | |
1128 | vstmia r12, {@XMM[15]} @ save last round key | |
1129 | veor @XMM[7], @XMM[7], @XMM[6] @ fix up round 0 key | |
1130 | vstmia $keysched, {@XMM[7]} | |
e0202d94 AP |
1131 | #else |
1132 | ldr r12, [$key, #244] | |
1133 | eors r12, #1 | |
1134 | beq 0f | |
1135 | ||
1136 | @ populate the key schedule | |
1137 | str r12, [$key, #244] | |
1138 | mov r4, $key @ pass key | |
1139 | mov r5, $rounds @ pass # of rounds | |
1140 | add r12, $key, #248 @ pass key schedule | |
1141 | bl _bsaes_key_convert | |
1142 | add r4, $key, #248 | |
1143 | vldmia r4, {@XMM[6]} | |
1144 | vstmia r12, {@XMM[15]} @ save last round key | |
1145 | veor @XMM[7], @XMM[7], @XMM[6] @ fix up round 0 key | |
1146 | vstmia r4, {@XMM[7]} | |
1147 | ||
1148 | .align 2 | |
1149 | 0: | |
1150 | #endif | |
9575d1a9 AP |
1151 | |
1152 | vld1.8 {@XMM[15]}, [$ivp] @ load IV | |
1153 | b .Lcbc_dec_loop | |
1154 | ||
1155 | .align 4 | |
1156 | .Lcbc_dec_loop: | |
1157 | subs $len, $len, #0x8 | |
1158 | bmi .Lcbc_dec_loop_finish | |
1159 | ||
1160 | vld1.8 {@XMM[0]-@XMM[1]}, [$inp]! @ load input | |
1161 | vld1.8 {@XMM[2]-@XMM[3]}, [$inp]! | |
e0202d94 | 1162 | #ifndef BSAES_ASM_EXTENDED_KEY |
9575d1a9 | 1163 | mov r4, $keysched @ pass the key |
e0202d94 AP |
1164 | #else |
1165 | add r4, $key, #248 | |
1166 | #endif | |
9575d1a9 AP |
1167 | vld1.8 {@XMM[4]-@XMM[5]}, [$inp]! |
1168 | mov r5, $rounds | |
1169 | vld1.8 {@XMM[6]-@XMM[7]}, [$inp] | |
1170 | sub $inp, $inp, #0x60 | |
1171 | vstmia $fp, {@XMM[15]} @ put aside IV | |
1172 | ||
1173 | bl _bsaes_decrypt8 | |
1174 | ||
1175 | vldmia $fp, {@XMM[14]} @ reload IV | |
1176 | vld1.8 {@XMM[8]-@XMM[9]}, [$inp]! @ reload input | |
1177 | veor @XMM[0], @XMM[0], @XMM[14] @ ^= IV | |
1178 | vld1.8 {@XMM[10]-@XMM[11]}, [$inp]! | |
1179 | veor @XMM[1], @XMM[1], @XMM[8] | |
1180 | veor @XMM[6], @XMM[6], @XMM[9] | |
1181 | vld1.8 {@XMM[12]-@XMM[13]}, [$inp]! | |
1182 | veor @XMM[4], @XMM[4], @XMM[10] | |
1183 | veor @XMM[2], @XMM[2], @XMM[11] | |
1184 | vld1.8 {@XMM[14]-@XMM[15]}, [$inp]! | |
1185 | veor @XMM[7], @XMM[7], @XMM[12] | |
1186 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! @ write output | |
1187 | veor @XMM[3], @XMM[3], @XMM[13] | |
1188 | vst1.8 {@XMM[6]}, [$out]! | |
1189 | veor @XMM[5], @XMM[5], @XMM[14] | |
1190 | vst1.8 {@XMM[4]}, [$out]! | |
1191 | vst1.8 {@XMM[2]}, [$out]! | |
1192 | vst1.8 {@XMM[7]}, [$out]! | |
1193 | vst1.8 {@XMM[3]}, [$out]! | |
1194 | vst1.8 {@XMM[5]}, [$out]! | |
1195 | ||
1196 | b .Lcbc_dec_loop | |
1197 | ||
1198 | .Lcbc_dec_loop_finish: | |
1199 | adds $len, $len, #8 | |
1200 | beq .Lcbc_dec_done | |
1201 | ||
1202 | vld1.8 {@XMM[0]}, [$inp]! @ load input | |
1203 | cmp $len, #2 | |
1204 | blo .Lcbc_dec_one | |
1205 | vld1.8 {@XMM[1]}, [$inp]! | |
e0202d94 | 1206 | #ifndef BSAES_ASM_EXTENDED_KEY |
9575d1a9 | 1207 | mov r4, $keysched @ pass the key |
e0202d94 AP |
1208 | #else |
1209 | add r4, $key, #248 | |
1210 | #endif | |
9575d1a9 AP |
1211 | mov r5, $rounds |
1212 | vstmia $fp, {@XMM[15]} @ put aside IV | |
1213 | beq .Lcbc_dec_two | |
1214 | vld1.8 {@XMM[2]}, [$inp]! | |
1215 | cmp $len, #4 | |
1216 | blo .Lcbc_dec_three | |
1217 | vld1.8 {@XMM[3]}, [$inp]! | |
1218 | beq .Lcbc_dec_four | |
1219 | vld1.8 {@XMM[4]}, [$inp]! | |
1220 | cmp $len, #6 | |
1221 | blo .Lcbc_dec_five | |
1222 | vld1.8 {@XMM[5]}, [$inp]! | |
1223 | beq .Lcbc_dec_six | |
1224 | vld1.8 {@XMM[6]}, [$inp]! | |
1225 | sub $inp, $inp, #0x70 | |
1226 | ||
1227 | bl _bsaes_decrypt8 | |
1228 | ||
1229 | vldmia $fp, {@XMM[14]} @ reload IV | |
1230 | vld1.8 {@XMM[8]-@XMM[9]}, [$inp]! @ reload input | |
1231 | veor @XMM[0], @XMM[0], @XMM[14] @ ^= IV | |
1232 | vld1.8 {@XMM[10]-@XMM[11]}, [$inp]! | |
1233 | veor @XMM[1], @XMM[1], @XMM[8] | |
1234 | veor @XMM[6], @XMM[6], @XMM[9] | |
1235 | vld1.8 {@XMM[12]-@XMM[13]}, [$inp]! | |
1236 | veor @XMM[4], @XMM[4], @XMM[10] | |
1237 | veor @XMM[2], @XMM[2], @XMM[11] | |
1238 | vld1.8 {@XMM[15]}, [$inp]! | |
1239 | veor @XMM[7], @XMM[7], @XMM[12] | |
1240 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! @ write output | |
1241 | veor @XMM[3], @XMM[3], @XMM[13] | |
1242 | vst1.8 {@XMM[6]}, [$out]! | |
1243 | vst1.8 {@XMM[4]}, [$out]! | |
1244 | vst1.8 {@XMM[2]}, [$out]! | |
1245 | vst1.8 {@XMM[7]}, [$out]! | |
1246 | vst1.8 {@XMM[3]}, [$out]! | |
1247 | b .Lcbc_dec_done | |
1248 | .align 4 | |
1249 | .Lcbc_dec_six: | |
1250 | sub $inp, $inp, #0x60 | |
1251 | bl _bsaes_decrypt8 | |
1252 | vldmia $fp,{@XMM[14]} @ reload IV | |
1253 | vld1.8 {@XMM[8]-@XMM[9]}, [$inp]! @ reload input | |
1254 | veor @XMM[0], @XMM[0], @XMM[14] @ ^= IV | |
1255 | vld1.8 {@XMM[10]-@XMM[11]}, [$inp]! | |
1256 | veor @XMM[1], @XMM[1], @XMM[8] | |
1257 | veor @XMM[6], @XMM[6], @XMM[9] | |
1258 | vld1.8 {@XMM[12]}, [$inp]! | |
1259 | veor @XMM[4], @XMM[4], @XMM[10] | |
1260 | veor @XMM[2], @XMM[2], @XMM[11] | |
1261 | vld1.8 {@XMM[15]}, [$inp]! | |
1262 | veor @XMM[7], @XMM[7], @XMM[12] | |
1263 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! @ write output | |
1264 | vst1.8 {@XMM[6]}, [$out]! | |
1265 | vst1.8 {@XMM[4]}, [$out]! | |
1266 | vst1.8 {@XMM[2]}, [$out]! | |
1267 | vst1.8 {@XMM[7]}, [$out]! | |
1268 | b .Lcbc_dec_done | |
1269 | .align 4 | |
1270 | .Lcbc_dec_five: | |
1271 | sub $inp, $inp, #0x50 | |
1272 | bl _bsaes_decrypt8 | |
1273 | vldmia $fp, {@XMM[14]} @ reload IV | |
1274 | vld1.8 {@XMM[8]-@XMM[9]}, [$inp]! @ reload input | |
1275 | veor @XMM[0], @XMM[0], @XMM[14] @ ^= IV | |
1276 | vld1.8 {@XMM[10]-@XMM[11]}, [$inp]! | |
1277 | veor @XMM[1], @XMM[1], @XMM[8] | |
1278 | veor @XMM[6], @XMM[6], @XMM[9] | |
1279 | vld1.8 {@XMM[15]}, [$inp]! | |
1280 | veor @XMM[4], @XMM[4], @XMM[10] | |
1281 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! @ write output | |
1282 | veor @XMM[2], @XMM[2], @XMM[11] | |
1283 | vst1.8 {@XMM[6]}, [$out]! | |
1284 | vst1.8 {@XMM[4]}, [$out]! | |
1285 | vst1.8 {@XMM[2]}, [$out]! | |
1286 | b .Lcbc_dec_done | |
1287 | .align 4 | |
1288 | .Lcbc_dec_four: | |
1289 | sub $inp, $inp, #0x40 | |
1290 | bl _bsaes_decrypt8 | |
1291 | vldmia $fp, {@XMM[14]} @ reload IV | |
1292 | vld1.8 {@XMM[8]-@XMM[9]}, [$inp]! @ reload input | |
1293 | veor @XMM[0], @XMM[0], @XMM[14] @ ^= IV | |
1294 | vld1.8 {@XMM[10]}, [$inp]! | |
1295 | veor @XMM[1], @XMM[1], @XMM[8] | |
1296 | veor @XMM[6], @XMM[6], @XMM[9] | |
1297 | vld1.8 {@XMM[15]}, [$inp]! | |
1298 | veor @XMM[4], @XMM[4], @XMM[10] | |
1299 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! @ write output | |
1300 | vst1.8 {@XMM[6]}, [$out]! | |
1301 | vst1.8 {@XMM[4]}, [$out]! | |
1302 | b .Lcbc_dec_done | |
1303 | .align 4 | |
1304 | .Lcbc_dec_three: | |
1305 | sub $inp, $inp, #0x30 | |
1306 | bl _bsaes_decrypt8 | |
1307 | vldmia $fp, {@XMM[14]} @ reload IV | |
1308 | vld1.8 {@XMM[8]-@XMM[9]}, [$inp]! @ reload input | |
1309 | veor @XMM[0], @XMM[0], @XMM[14] @ ^= IV | |
1310 | vld1.8 {@XMM[15]}, [$inp]! | |
1311 | veor @XMM[1], @XMM[1], @XMM[8] | |
1312 | veor @XMM[6], @XMM[6], @XMM[9] | |
1313 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! @ write output | |
1314 | vst1.8 {@XMM[6]}, [$out]! | |
1315 | b .Lcbc_dec_done | |
1316 | .align 4 | |
1317 | .Lcbc_dec_two: | |
1318 | sub $inp, $inp, #0x20 | |
1319 | bl _bsaes_decrypt8 | |
1320 | vldmia $fp, {@XMM[14]} @ reload IV | |
1321 | vld1.8 {@XMM[8]}, [$inp]! @ reload input | |
1322 | veor @XMM[0], @XMM[0], @XMM[14] @ ^= IV | |
1323 | vld1.8 {@XMM[15]}, [$inp]! @ reload input | |
1324 | veor @XMM[1], @XMM[1], @XMM[8] | |
1325 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! @ write output | |
1326 | b .Lcbc_dec_done | |
1327 | .align 4 | |
1328 | .Lcbc_dec_one: | |
1329 | sub $inp, $inp, #0x10 | |
1330 | mov $rounds, $out @ save original out pointer | |
1331 | mov $out, $fp @ use the iv scratch space as out buffer | |
1332 | mov r2, $key | |
1333 | vmov @XMM[4],@XMM[15] @ just in case ensure that IV | |
1334 | vmov @XMM[5],@XMM[0] @ and input are preserved | |
1335 | bl AES_decrypt | |
1336 | vld1.8 {@XMM[0]}, [$fp,:64] @ load result | |
1337 | veor @XMM[0], @XMM[0], @XMM[4] @ ^= IV | |
1338 | vmov @XMM[15], @XMM[5] @ @XMM[5] holds input | |
1339 | vst1.8 {@XMM[0]}, [$rounds] @ write output | |
1340 | ||
1341 | .Lcbc_dec_done: | |
e0202d94 | 1342 | #ifndef BSAES_ASM_EXTENDED_KEY |
9575d1a9 AP |
1343 | vmov.i32 q0, #0 |
1344 | vmov.i32 q1, #0 | |
1345 | .Lcbc_dec_bzero: @ wipe key schedule [if any] | |
1346 | vstmia $keysched!, {q0-q1} | |
e0202d94 | 1347 | cmp $keysched, $fp |
9575d1a9 | 1348 | bne .Lcbc_dec_bzero |
e0202d94 | 1349 | #endif |
9575d1a9 | 1350 | |
e0202d94 AP |
1351 | mov sp, $fp |
1352 | add sp, #0x10 @ add sp,$fp,#0x10 is no good for thumb | |
9575d1a9 | 1353 | vst1.8 {@XMM[15]}, [$ivp] @ return IV |
e0202d94 | 1354 | VFP_ABI_POP |
9575d1a9 AP |
1355 | ldmia sp!, {r4-r10, pc} |
1356 | .size bsaes_cbc_encrypt,.-bsaes_cbc_encrypt | |
1357 | ___ | |
1358 | } | |
1359 | { | |
1360 | my ($inp,$out,$len,$key, $ctr,$fp,$rounds)=(map("r$_",(0..3,8..10))); | |
1361 | my $const = "r6"; # shared with _bsaes_encrypt8_alt | |
1362 | my $keysched = "sp"; | |
1363 | ||
1364 | $code.=<<___; | |
1365 | .extern AES_encrypt | |
1366 | .global bsaes_ctr32_encrypt_blocks | |
1367 | .type bsaes_ctr32_encrypt_blocks,%function | |
1368 | .align 5 | |
1369 | bsaes_ctr32_encrypt_blocks: | |
1370 | cmp $len, #8 @ use plain AES for | |
1371 | blo .Lctr_enc_short @ small sizes | |
1372 | ||
e0202d94 | 1373 | mov ip, sp |
9575d1a9 | 1374 | stmdb sp!, {r4-r10, lr} |
e0202d94 AP |
1375 | VFP_ABI_PUSH |
1376 | ldr $ctr, [ip] @ ctr is 1st arg on the stack | |
9575d1a9 AP |
1377 | sub sp, sp, #0x10 @ scratch space to carry over the ctr |
1378 | mov $fp, sp @ save sp | |
1379 | ||
9575d1a9 | 1380 | ldr $rounds, [$key, #240] @ get # of rounds |
e0202d94 AP |
1381 | #ifndef BSAES_ASM_EXTENDED_KEY |
1382 | @ allocate the key schedule on the stack | |
1383 | sub r12, sp, $rounds, lsl#7 @ 128 bytes per inner round key | |
1384 | add r12, #`128-32` @ size of bit-sliced key schedule | |
9575d1a9 AP |
1385 | |
1386 | @ populate the key schedule | |
1387 | mov r4, $key @ pass key | |
1388 | mov r5, $rounds @ pass # of rounds | |
e0202d94 | 1389 | mov sp, r12 @ sp is $keysched |
9575d1a9 AP |
1390 | bl _bsaes_key_convert |
1391 | veor @XMM[7],@XMM[7],@XMM[15] @ fix up last round key | |
1392 | vstmia r12, {@XMM[7]} @ save last round key | |
1393 | ||
1394 | vld1.8 {@XMM[0]}, [$ctr] @ load counter | |
1395 | add $ctr, $const, #.LREVM0SR-.LM0 @ borrow $ctr | |
1396 | vldmia $keysched, {@XMM[4]} @ load round0 key | |
e0202d94 AP |
1397 | #else |
1398 | ldr r12, [$key, #244] | |
1399 | eors r12, #1 | |
1400 | beq 0f | |
1401 | ||
1402 | @ populate the key schedule | |
1403 | str r12, [$key, #244] | |
1404 | mov r4, $key @ pass key | |
1405 | mov r5, $rounds @ pass # of rounds | |
1406 | add r12, $key, #248 @ pass key schedule | |
1407 | bl _bsaes_key_convert | |
1408 | veor @XMM[7],@XMM[7],@XMM[15] @ fix up last round key | |
1409 | vstmia r12, {@XMM[7]} @ save last round key | |
1410 | ||
1411 | .align 2 | |
1412 | 0: add r12, $key, #248 | |
1413 | vld1.8 {@XMM[0]}, [$ctr] @ load counter | |
1414 | adrl $ctr, .LREVM0SR @ borrow $ctr | |
1415 | vldmia r12, {@XMM[4]} @ load round0 key | |
1416 | sub sp, #0x10 @ place for adjusted round0 key | |
1417 | #endif | |
9575d1a9 | 1418 | |
612f4e23 AP |
1419 | vmov.i32 @XMM[8],#1 @ compose 1<<96 |
1420 | veor @XMM[9],@XMM[9],@XMM[9] | |
1421 | vrev32.8 @XMM[0],@XMM[0] | |
1422 | vext.8 @XMM[8],@XMM[9],@XMM[8],#4 | |
1423 | vrev32.8 @XMM[4],@XMM[4] | |
9575d1a9 AP |
1424 | vadd.u32 @XMM[9],@XMM[8],@XMM[8] @ compose 2<<96 |
1425 | vstmia $keysched, {@XMM[4]} @ save adjusted round0 key | |
1426 | b .Lctr_enc_loop | |
1427 | ||
1428 | .align 4 | |
1429 | .Lctr_enc_loop: | |
1430 | vadd.u32 @XMM[10], @XMM[8], @XMM[9] @ compose 3<<96 | |
1431 | vadd.u32 @XMM[1], @XMM[0], @XMM[8] @ +1 | |
1432 | vadd.u32 @XMM[2], @XMM[0], @XMM[9] @ +2 | |
1433 | vadd.u32 @XMM[3], @XMM[0], @XMM[10] @ +3 | |
1434 | vadd.u32 @XMM[4], @XMM[1], @XMM[10] | |
1435 | vadd.u32 @XMM[5], @XMM[2], @XMM[10] | |
1436 | vadd.u32 @XMM[6], @XMM[3], @XMM[10] | |
1437 | vadd.u32 @XMM[7], @XMM[4], @XMM[10] | |
1438 | vadd.u32 @XMM[10], @XMM[5], @XMM[10] @ next counter | |
1439 | ||
1440 | @ Borrow prologue from _bsaes_encrypt8 to use the opportunity | |
1441 | @ to flip byte order in 32-bit counter | |
1442 | ||
1443 | vldmia $keysched, {@XMM[9]} @ load round0 key | |
e0202d94 | 1444 | #ifndef BSAES_ASM_EXTENDED_KEY |
9575d1a9 | 1445 | add r4, $keysched, #0x10 @ pass next round key |
e0202d94 AP |
1446 | #else |
1447 | add r4, $key, #`248+16` | |
1448 | #endif | |
9575d1a9 AP |
1449 | vldmia $ctr, {@XMM[8]} @ .LREVM0SR |
1450 | mov r5, $rounds @ pass rounds | |
1451 | vstmia $fp, {@XMM[10]} @ save next counter | |
1452 | sub $const, $ctr, #.LREVM0SR-.LSR @ pass constants | |
1453 | ||
1454 | bl _bsaes_encrypt8_alt | |
1455 | ||
1456 | subs $len, $len, #8 | |
1457 | blo .Lctr_enc_loop_done | |
1458 | ||
1459 | vld1.8 {@XMM[8]-@XMM[9]}, [$inp]! @ load input | |
1460 | vld1.8 {@XMM[10]-@XMM[11]}, [$inp]! | |
1461 | veor @XMM[0], @XMM[8] | |
1462 | veor @XMM[1], @XMM[9] | |
1463 | vld1.8 {@XMM[12]-@XMM[13]}, [$inp]! | |
1464 | veor @XMM[4], @XMM[10] | |
1465 | veor @XMM[6], @XMM[11] | |
1466 | vld1.8 {@XMM[14]-@XMM[15]}, [$inp]! | |
1467 | veor @XMM[3], @XMM[12] | |
1468 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! @ write output | |
1469 | veor @XMM[7], @XMM[13] | |
1470 | veor @XMM[2], @XMM[14] | |
1471 | vst1.8 {@XMM[4]}, [$out]! | |
1472 | veor @XMM[5], @XMM[15] | |
1473 | vst1.8 {@XMM[6]}, [$out]! | |
612f4e23 | 1474 | vmov.i32 @XMM[8], #1 @ compose 1<<96 |
9575d1a9 | 1475 | vst1.8 {@XMM[3]}, [$out]! |
612f4e23 | 1476 | veor @XMM[9], @XMM[9], @XMM[9] |
9575d1a9 | 1477 | vst1.8 {@XMM[7]}, [$out]! |
612f4e23 | 1478 | vext.8 @XMM[8], @XMM[9], @XMM[8], #4 |
9575d1a9 AP |
1479 | vst1.8 {@XMM[2]}, [$out]! |
1480 | vadd.u32 @XMM[9],@XMM[8],@XMM[8] @ compose 2<<96 | |
1481 | vst1.8 {@XMM[5]}, [$out]! | |
1482 | vldmia $fp, {@XMM[0]} @ load counter | |
1483 | ||
1484 | bne .Lctr_enc_loop | |
1485 | b .Lctr_enc_done | |
1486 | ||
1487 | .align 4 | |
1488 | .Lctr_enc_loop_done: | |
1489 | add $len, $len, #8 | |
1490 | vld1.8 {@XMM[8]}, [$inp]! @ load input | |
1491 | veor @XMM[0], @XMM[8] | |
1492 | vst1.8 {@XMM[0]}, [$out]! @ write output | |
1493 | cmp $len, #2 | |
1494 | blo .Lctr_enc_done | |
1495 | vld1.8 {@XMM[9]}, [$inp]! | |
1496 | veor @XMM[1], @XMM[9] | |
1497 | vst1.8 {@XMM[1]}, [$out]! | |
1498 | beq .Lctr_enc_done | |
1499 | vld1.8 {@XMM[10]}, [$inp]! | |
1500 | veor @XMM[4], @XMM[10] | |
1501 | vst1.8 {@XMM[4]}, [$out]! | |
1502 | cmp $len, #4 | |
1503 | blo .Lctr_enc_done | |
1504 | vld1.8 {@XMM[11]}, [$inp]! | |
1505 | veor @XMM[6], @XMM[11] | |
1506 | vst1.8 {@XMM[6]}, [$out]! | |
1507 | beq .Lctr_enc_done | |
1508 | vld1.8 {@XMM[12]}, [$inp]! | |
1509 | veor @XMM[3], @XMM[12] | |
1510 | vst1.8 {@XMM[3]}, [$out]! | |
1511 | cmp $len, #6 | |
1512 | blo .Lctr_enc_done | |
1513 | vld1.8 {@XMM[13]}, [$inp]! | |
1514 | veor @XMM[7], @XMM[13] | |
1515 | vst1.8 {@XMM[7]}, [$out]! | |
1516 | beq .Lctr_enc_done | |
1517 | vld1.8 {@XMM[14]}, [$inp] | |
1518 | veor @XMM[2], @XMM[14] | |
1519 | vst1.8 {@XMM[2]}, [$out]! | |
1520 | ||
1521 | .Lctr_enc_done: | |
1522 | vmov.i32 q0, #0 | |
1523 | vmov.i32 q1, #0 | |
e0202d94 | 1524 | #ifndef BSAES_ASM_EXTENDED_KEY |
9575d1a9 AP |
1525 | .Lctr_enc_bzero: @ wipe key schedule [if any] |
1526 | vstmia $keysched!, {q0-q1} | |
e0202d94 | 1527 | cmp $keysched, $fp |
9575d1a9 | 1528 | bne .Lctr_enc_bzero |
e0202d94 AP |
1529 | #else |
1530 | vstmia $keysched, {q0-q1} | |
1531 | #endif | |
9575d1a9 | 1532 | |
e0202d94 AP |
1533 | mov sp, $fp |
1534 | add sp, #0x10 @ add sp,$fp,#0x10 is no good for thumb | |
1535 | VFP_ABI_POP | |
9575d1a9 AP |
1536 | ldmia sp!, {r4-r10, pc} @ return |
1537 | ||
1538 | .align 4 | |
1539 | .Lctr_enc_short: | |
1540 | ldr ip, [sp] @ ctr pointer is passed on stack | |
1541 | stmdb sp!, {r4-r8, lr} | |
1542 | ||
1543 | mov r4, $inp @ copy arguments | |
1544 | mov r5, $out | |
1545 | mov r6, $len | |
1546 | mov r7, $key | |
1547 | ldr r8, [ip, #12] @ load counter LSW | |
1548 | vld1.8 {@XMM[1]}, [ip] @ load whole counter value | |
1549 | #ifdef __ARMEL__ | |
1550 | rev r8, r8 | |
1551 | #endif | |
1552 | sub sp, sp, #0x10 | |
1553 | vst1.8 {@XMM[1]}, [sp,:64] @ copy counter value | |
1554 | sub sp, sp, #0x10 | |
1555 | ||
1556 | .Lctr_enc_short_loop: | |
1557 | add r0, sp, #0x10 @ input counter value | |
1558 | mov r1, sp @ output on the stack | |
1559 | mov r2, r7 @ key | |
1560 | ||
1561 | bl AES_encrypt | |
1562 | ||
1563 | vld1.8 {@XMM[0]}, [r4]! @ load input | |
1564 | vld1.8 {@XMM[1]}, [sp,:64] @ load encrypted counter | |
1565 | add r8, r8, #1 | |
1566 | #ifdef __ARMEL__ | |
1567 | rev r0, r8 | |
1568 | str r0, [sp, #0x1c] @ next counter value | |
1569 | #else | |
1570 | str r8, [sp, #0x1c] @ next counter value | |
1571 | #endif | |
1572 | veor @XMM[0],@XMM[0],@XMM[1] | |
1573 | vst1.8 {@XMM[0]}, [r5]! @ store output | |
1574 | subs r6, r6, #1 | |
1575 | bne .Lctr_enc_short_loop | |
1576 | ||
e0202d94 AP |
1577 | vmov.i32 q0, #0 |
1578 | vmov.i32 q1, #0 | |
1579 | vstmia sp!, {q0-q1} | |
1580 | ||
9575d1a9 AP |
1581 | ldmia sp!, {r4-r8, pc} |
1582 | .size bsaes_ctr32_encrypt_blocks,.-bsaes_ctr32_encrypt_blocks | |
1583 | ___ | |
1584 | } | |
a2ea9f3e AB |
1585 | { |
1586 | ###################################################################### | |
1587 | # void bsaes_xts_[en|de]crypt(const char *inp,char *out,size_t len, | |
1588 | # const AES_KEY *key1, const AES_KEY *key2, | |
1589 | # const unsigned char iv[16]); | |
1590 | # | |
29f41e8a AP |
1591 | my ($inp,$out,$len,$key,$rounds,$magic,$fp)=(map("r$_",(7..10,1..3))); |
1592 | my $const="r6"; # returned by _bsaes_key_convert | |
a2ea9f3e AB |
1593 | my $twmask=@XMM[5]; |
1594 | my @T=@XMM[6..7]; | |
1595 | ||
1596 | $code.=<<___; | |
1597 | .globl bsaes_xts_encrypt | |
1598 | .type bsaes_xts_encrypt,%function | |
1599 | .align 4 | |
1600 | bsaes_xts_encrypt: | |
e0202d94 | 1601 | mov ip, sp |
29f41e8a | 1602 | stmdb sp!, {r4-r10, lr} @ 0x20 |
e0202d94 | 1603 | VFP_ABI_PUSH |
29f41e8a | 1604 | mov r6, sp @ future $fp |
a2ea9f3e AB |
1605 | |
1606 | mov $inp, r0 | |
1607 | mov $out, r1 | |
1608 | mov $len, r2 | |
1609 | mov $key, r3 | |
1610 | ||
e0202d94 AP |
1611 | sub r0, sp, #0x10 @ 0x10 |
1612 | bic r0, #0xf @ align at 16 bytes | |
1613 | mov sp, r0 | |
1614 | ||
1615 | #ifdef XTS_CHAIN_TWEAK | |
1616 | ldr r0, [ip] @ pointer to input tweak | |
1617 | #else | |
a2ea9f3e | 1618 | @ generate initial tweak |
e0202d94 | 1619 | ldr r0, [ip, #4] @ iv[] |
a2ea9f3e | 1620 | mov r1, sp |
e0202d94 | 1621 | ldr r2, [ip, #0] @ key2 |
a2ea9f3e | 1622 | bl AES_encrypt |
e0202d94 AP |
1623 | mov r0,sp @ pointer to initial tweak |
1624 | #endif | |
a2ea9f3e | 1625 | |
a2ea9f3e | 1626 | ldr $rounds, [$key, #240] @ get # of rounds |
29f41e8a | 1627 | mov $fp, r6 |
e0202d94 AP |
1628 | #ifndef BSAES_ASM_EXTENDED_KEY |
1629 | @ allocate the key schedule on the stack | |
1630 | sub r12, sp, $rounds, lsl#7 @ 128 bytes per inner round key | |
1631 | @ add r12, #`128-32` @ size of bit-sliced key schedule | |
1632 | sub r12, #`32+16` @ place for tweak[9] | |
a2ea9f3e AB |
1633 | |
1634 | @ populate the key schedule | |
1635 | mov r4, $key @ pass key | |
1636 | mov r5, $rounds @ pass # of rounds | |
e0202d94 AP |
1637 | mov sp, r12 |
1638 | add r12, #0x90 @ pass key schedule | |
a2ea9f3e AB |
1639 | bl _bsaes_key_convert |
1640 | veor @XMM[7], @XMM[7], @XMM[15] @ fix up last round key | |
1641 | vstmia r12, {@XMM[7]} @ save last round key | |
e0202d94 AP |
1642 | #else |
1643 | ldr r12, [$key, #244] | |
1644 | eors r12, #1 | |
1645 | beq 0f | |
1646 | ||
1647 | str r12, [$key, #244] | |
1648 | mov r4, $key @ pass key | |
1649 | mov r5, $rounds @ pass # of rounds | |
1650 | add r12, $key, #248 @ pass key schedule | |
1651 | bl _bsaes_key_convert | |
1652 | veor @XMM[7], @XMM[7], @XMM[15] @ fix up last round key | |
1653 | vstmia r12, {@XMM[7]} | |
1654 | ||
1655 | .align 2 | |
1656 | 0: sub sp, #0x90 @ place for tweak[9] | |
1657 | #endif | |
a2ea9f3e | 1658 | |
29f41e8a | 1659 | vld1.8 {@XMM[8]}, [r0] @ initial tweak |
e0202d94 | 1660 | adr $magic, .Lxts_magic |
a2ea9f3e AB |
1661 | |
1662 | subs $len, #0x80 | |
1663 | blo .Lxts_enc_short | |
1664 | b .Lxts_enc_loop | |
1665 | ||
1666 | .align 4 | |
1667 | .Lxts_enc_loop: | |
29f41e8a | 1668 | vldmia $magic, {$twmask} @ load XTS magic |
a2ea9f3e AB |
1669 | vshr.s64 @T[0], @XMM[8], #63 |
1670 | mov r0, sp | |
1671 | vand @T[0], @T[0], $twmask | |
1672 | ___ | |
1673 | for($i=9;$i<16;$i++) { | |
1674 | $code.=<<___; | |
1675 | vadd.u64 @XMM[$i], @XMM[$i-1], @XMM[$i-1] | |
29f41e8a | 1676 | vst1.64 {@XMM[$i-1]}, [r0,:128]! |
a2ea9f3e AB |
1677 | vswp `&Dhi("@T[0]")`,`&Dlo("@T[0]")` |
1678 | vshr.s64 @T[1], @XMM[$i], #63 | |
1679 | veor @XMM[$i], @XMM[$i], @T[0] | |
1680 | vand @T[1], @T[1], $twmask | |
1681 | ___ | |
1682 | @T=reverse(@T); | |
1683 | ||
1684 | $code.=<<___ if ($i>=10); | |
1685 | vld1.8 {@XMM[$i-10]}, [$inp]! | |
1686 | ___ | |
1687 | $code.=<<___ if ($i>=11); | |
1688 | veor @XMM[$i-11], @XMM[$i-11], @XMM[$i-3] | |
1689 | ___ | |
1690 | } | |
1691 | $code.=<<___; | |
1692 | vadd.u64 @XMM[8], @XMM[15], @XMM[15] | |
29f41e8a | 1693 | vst1.64 {@XMM[15]}, [r0,:128]! |
a2ea9f3e AB |
1694 | vswp `&Dhi("@T[0]")`,`&Dlo("@T[0]")` |
1695 | veor @XMM[8], @XMM[8], @T[0] | |
29f41e8a | 1696 | vst1.64 {@XMM[8]}, [r0,:128] @ next round tweak |
a2ea9f3e AB |
1697 | |
1698 | vld1.8 {@XMM[6]-@XMM[7]}, [$inp]! | |
1699 | veor @XMM[5], @XMM[5], @XMM[13] | |
e0202d94 | 1700 | #ifndef BSAES_ASM_EXTENDED_KEY |
29f41e8a | 1701 | add r4, sp, #0x90 @ pass key schedule |
e0202d94 AP |
1702 | #else |
1703 | add r4, $key, #248 @ pass key schedule | |
1704 | #endif | |
a2ea9f3e AB |
1705 | veor @XMM[6], @XMM[6], @XMM[14] |
1706 | mov r5, $rounds @ pass rounds | |
1707 | veor @XMM[7], @XMM[7], @XMM[15] | |
1708 | mov r0, sp | |
1709 | ||
1710 | bl _bsaes_encrypt8 | |
1711 | ||
29f41e8a AP |
1712 | vld1.64 {@XMM[ 8]-@XMM[ 9]}, [r0,:128]! |
1713 | vld1.64 {@XMM[10]-@XMM[11]}, [r0,:128]! | |
a2ea9f3e | 1714 | veor @XMM[0], @XMM[0], @XMM[ 8] |
29f41e8a | 1715 | vld1.64 {@XMM[12]-@XMM[13]}, [r0,:128]! |
a2ea9f3e AB |
1716 | veor @XMM[1], @XMM[1], @XMM[ 9] |
1717 | veor @XMM[8], @XMM[4], @XMM[10] | |
1718 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | |
1719 | veor @XMM[9], @XMM[6], @XMM[11] | |
29f41e8a | 1720 | vld1.64 {@XMM[14]-@XMM[15]}, [r0,:128]! |
a2ea9f3e AB |
1721 | veor @XMM[10], @XMM[3], @XMM[12] |
1722 | vst1.8 {@XMM[8]-@XMM[9]}, [$out]! | |
1723 | veor @XMM[11], @XMM[7], @XMM[13] | |
1724 | veor @XMM[12], @XMM[2], @XMM[14] | |
1725 | vst1.8 {@XMM[10]-@XMM[11]}, [$out]! | |
1726 | veor @XMM[13], @XMM[5], @XMM[15] | |
1727 | vst1.8 {@XMM[12]-@XMM[13]}, [$out]! | |
1728 | ||
29f41e8a | 1729 | vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak |
a2ea9f3e AB |
1730 | |
1731 | subs $len, #0x80 | |
1732 | bpl .Lxts_enc_loop | |
1733 | ||
1734 | .Lxts_enc_short: | |
1735 | adds $len, #0x70 | |
1736 | bmi .Lxts_enc_done | |
1737 | ||
29f41e8a | 1738 | vldmia $magic, {$twmask} @ load XTS magic |
a2ea9f3e AB |
1739 | vshr.s64 @T[0], @XMM[8], #63 |
1740 | mov r0, sp | |
1741 | vand @T[0], @T[0], $twmask | |
1742 | ___ | |
1743 | for($i=9;$i<16;$i++) { | |
1744 | $code.=<<___; | |
1745 | vadd.u64 @XMM[$i], @XMM[$i-1], @XMM[$i-1] | |
29f41e8a | 1746 | vst1.64 {@XMM[$i-1]}, [r0,:128]! |
a2ea9f3e AB |
1747 | vswp `&Dhi("@T[0]")`,`&Dlo("@T[0]")` |
1748 | vshr.s64 @T[1], @XMM[$i], #63 | |
1749 | veor @XMM[$i], @XMM[$i], @T[0] | |
1750 | vand @T[1], @T[1], $twmask | |
1751 | ___ | |
1752 | @T=reverse(@T); | |
1753 | ||
1754 | $code.=<<___ if ($i>=10); | |
1755 | vld1.8 {@XMM[$i-10]}, [$inp]! | |
1756 | subs $len, #0x10 | |
1757 | bmi .Lxts_enc_`$i-9` | |
1758 | ___ | |
1759 | $code.=<<___ if ($i>=11); | |
1760 | veor @XMM[$i-11], @XMM[$i-11], @XMM[$i-3] | |
1761 | ___ | |
1762 | } | |
1763 | $code.=<<___; | |
1764 | sub $len, #0x10 | |
29f41e8a | 1765 | vst1.64 {@XMM[15]}, [r0,:128] @ next round tweak |
a2ea9f3e AB |
1766 | |
1767 | vld1.8 {@XMM[6]}, [$inp]! | |
1768 | veor @XMM[5], @XMM[5], @XMM[13] | |
e0202d94 | 1769 | #ifndef BSAES_ASM_EXTENDED_KEY |
29f41e8a | 1770 | add r4, sp, #0x90 @ pass key schedule |
e0202d94 AP |
1771 | #else |
1772 | add r4, $key, #248 @ pass key schedule | |
1773 | #endif | |
a2ea9f3e AB |
1774 | veor @XMM[6], @XMM[6], @XMM[14] |
1775 | mov r5, $rounds @ pass rounds | |
1776 | mov r0, sp | |
1777 | ||
1778 | bl _bsaes_encrypt8 | |
1779 | ||
29f41e8a AP |
1780 | vld1.64 {@XMM[ 8]-@XMM[ 9]}, [r0,:128]! |
1781 | vld1.64 {@XMM[10]-@XMM[11]}, [r0,:128]! | |
a2ea9f3e | 1782 | veor @XMM[0], @XMM[0], @XMM[ 8] |
29f41e8a | 1783 | vld1.64 {@XMM[12]-@XMM[13]}, [r0,:128]! |
a2ea9f3e AB |
1784 | veor @XMM[1], @XMM[1], @XMM[ 9] |
1785 | veor @XMM[8], @XMM[4], @XMM[10] | |
1786 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | |
1787 | veor @XMM[9], @XMM[6], @XMM[11] | |
29f41e8a | 1788 | vld1.64 {@XMM[14]}, [r0,:128]! |
a2ea9f3e AB |
1789 | veor @XMM[10], @XMM[3], @XMM[12] |
1790 | vst1.8 {@XMM[8]-@XMM[9]}, [$out]! | |
1791 | veor @XMM[11], @XMM[7], @XMM[13] | |
1792 | veor @XMM[12], @XMM[2], @XMM[14] | |
1793 | vst1.8 {@XMM[10]-@XMM[11]}, [$out]! | |
1794 | vst1.8 {@XMM[12]}, [$out]! | |
1795 | ||
29f41e8a | 1796 | vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak |
a2ea9f3e | 1797 | b .Lxts_enc_done |
29f41e8a | 1798 | .align 4 |
a2ea9f3e | 1799 | .Lxts_enc_6: |
29f41e8a | 1800 | vst1.64 {@XMM[14]}, [r0,:128] @ next round tweak |
a2ea9f3e AB |
1801 | |
1802 | veor @XMM[4], @XMM[4], @XMM[12] | |
e0202d94 | 1803 | #ifndef BSAES_ASM_EXTENDED_KEY |
29f41e8a | 1804 | add r4, sp, #0x90 @ pass key schedule |
e0202d94 AP |
1805 | #else |
1806 | add r4, $key, #248 @ pass key schedule | |
1807 | #endif | |
a2ea9f3e AB |
1808 | veor @XMM[5], @XMM[5], @XMM[13] |
1809 | mov r5, $rounds @ pass rounds | |
1810 | mov r0, sp | |
1811 | ||
1812 | bl _bsaes_encrypt8 | |
1813 | ||
29f41e8a AP |
1814 | vld1.64 {@XMM[ 8]-@XMM[ 9]}, [r0,:128]! |
1815 | vld1.64 {@XMM[10]-@XMM[11]}, [r0,:128]! | |
a2ea9f3e | 1816 | veor @XMM[0], @XMM[0], @XMM[ 8] |
29f41e8a | 1817 | vld1.64 {@XMM[12]-@XMM[13]}, [r0,:128]! |
a2ea9f3e AB |
1818 | veor @XMM[1], @XMM[1], @XMM[ 9] |
1819 | veor @XMM[8], @XMM[4], @XMM[10] | |
1820 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | |
1821 | veor @XMM[9], @XMM[6], @XMM[11] | |
1822 | veor @XMM[10], @XMM[3], @XMM[12] | |
1823 | vst1.8 {@XMM[8]-@XMM[9]}, [$out]! | |
1824 | veor @XMM[11], @XMM[7], @XMM[13] | |
1825 | vst1.8 {@XMM[10]-@XMM[11]}, [$out]! | |
1826 | ||
29f41e8a | 1827 | vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak |
a2ea9f3e | 1828 | b .Lxts_enc_done |
e0202d94 AP |
1829 | |
1830 | @ put this in range for both ARM and Thumb mode adr instructions | |
1831 | .align 5 | |
1832 | .Lxts_magic: | |
1833 | .quad 1, 0x87 | |
1834 | ||
1835 | .align 5 | |
a2ea9f3e | 1836 | .Lxts_enc_5: |
29f41e8a | 1837 | vst1.64 {@XMM[13]}, [r0,:128] @ next round tweak |
a2ea9f3e AB |
1838 | |
1839 | veor @XMM[3], @XMM[3], @XMM[11] | |
e0202d94 | 1840 | #ifndef BSAES_ASM_EXTENDED_KEY |
29f41e8a | 1841 | add r4, sp, #0x90 @ pass key schedule |
e0202d94 AP |
1842 | #else |
1843 | add r4, $key, #248 @ pass key schedule | |
1844 | #endif | |
a2ea9f3e AB |
1845 | veor @XMM[4], @XMM[4], @XMM[12] |
1846 | mov r5, $rounds @ pass rounds | |
1847 | mov r0, sp | |
1848 | ||
1849 | bl _bsaes_encrypt8 | |
1850 | ||
29f41e8a AP |
1851 | vld1.64 {@XMM[ 8]-@XMM[ 9]}, [r0,:128]! |
1852 | vld1.64 {@XMM[10]-@XMM[11]}, [r0,:128]! | |
a2ea9f3e | 1853 | veor @XMM[0], @XMM[0], @XMM[ 8] |
29f41e8a | 1854 | vld1.64 {@XMM[12]}, [r0,:128]! |
a2ea9f3e AB |
1855 | veor @XMM[1], @XMM[1], @XMM[ 9] |
1856 | veor @XMM[8], @XMM[4], @XMM[10] | |
1857 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | |
1858 | veor @XMM[9], @XMM[6], @XMM[11] | |
1859 | veor @XMM[10], @XMM[3], @XMM[12] | |
1860 | vst1.8 {@XMM[8]-@XMM[9]}, [$out]! | |
1861 | vst1.8 {@XMM[10]}, [$out]! | |
1862 | ||
29f41e8a | 1863 | vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak |
a2ea9f3e | 1864 | b .Lxts_enc_done |
29f41e8a | 1865 | .align 4 |
a2ea9f3e | 1866 | .Lxts_enc_4: |
29f41e8a | 1867 | vst1.64 {@XMM[12]}, [r0,:128] @ next round tweak |
a2ea9f3e AB |
1868 | |
1869 | veor @XMM[2], @XMM[2], @XMM[10] | |
e0202d94 | 1870 | #ifndef BSAES_ASM_EXTENDED_KEY |
29f41e8a | 1871 | add r4, sp, #0x90 @ pass key schedule |
e0202d94 AP |
1872 | #else |
1873 | add r4, $key, #248 @ pass key schedule | |
1874 | #endif | |
a2ea9f3e AB |
1875 | veor @XMM[3], @XMM[3], @XMM[11] |
1876 | mov r5, $rounds @ pass rounds | |
1877 | mov r0, sp | |
1878 | ||
1879 | bl _bsaes_encrypt8 | |
1880 | ||
29f41e8a AP |
1881 | vld1.64 {@XMM[ 8]-@XMM[ 9]}, [r0,:128]! |
1882 | vld1.64 {@XMM[10]-@XMM[11]}, [r0,:128]! | |
a2ea9f3e AB |
1883 | veor @XMM[0], @XMM[0], @XMM[ 8] |
1884 | veor @XMM[1], @XMM[1], @XMM[ 9] | |
1885 | veor @XMM[8], @XMM[4], @XMM[10] | |
1886 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | |
1887 | veor @XMM[9], @XMM[6], @XMM[11] | |
1888 | vst1.8 {@XMM[8]-@XMM[9]}, [$out]! | |
1889 | ||
29f41e8a | 1890 | vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak |
a2ea9f3e | 1891 | b .Lxts_enc_done |
29f41e8a | 1892 | .align 4 |
a2ea9f3e | 1893 | .Lxts_enc_3: |
29f41e8a | 1894 | vst1.64 {@XMM[11]}, [r0,:128] @ next round tweak |
a2ea9f3e AB |
1895 | |
1896 | veor @XMM[1], @XMM[1], @XMM[9] | |
e0202d94 | 1897 | #ifndef BSAES_ASM_EXTENDED_KEY |
29f41e8a | 1898 | add r4, sp, #0x90 @ pass key schedule |
e0202d94 AP |
1899 | #else |
1900 | add r4, $key, #248 @ pass key schedule | |
1901 | #endif | |
a2ea9f3e AB |
1902 | veor @XMM[2], @XMM[2], @XMM[10] |
1903 | mov r5, $rounds @ pass rounds | |
1904 | mov r0, sp | |
1905 | ||
1906 | bl _bsaes_encrypt8 | |
1907 | ||
29f41e8a AP |
1908 | vld1.64 {@XMM[8]-@XMM[9]}, [r0,:128]! |
1909 | vld1.64 {@XMM[10]}, [r0,:128]! | |
a2ea9f3e AB |
1910 | veor @XMM[0], @XMM[0], @XMM[ 8] |
1911 | veor @XMM[1], @XMM[1], @XMM[ 9] | |
1912 | veor @XMM[8], @XMM[4], @XMM[10] | |
1913 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | |
1914 | vst1.8 {@XMM[8]}, [$out]! | |
1915 | ||
29f41e8a | 1916 | vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak |
a2ea9f3e | 1917 | b .Lxts_enc_done |
29f41e8a | 1918 | .align 4 |
a2ea9f3e | 1919 | .Lxts_enc_2: |
29f41e8a | 1920 | vst1.64 {@XMM[10]}, [r0,:128] @ next round tweak |
a2ea9f3e AB |
1921 | |
1922 | veor @XMM[0], @XMM[0], @XMM[8] | |
e0202d94 | 1923 | #ifndef BSAES_ASM_EXTENDED_KEY |
29f41e8a | 1924 | add r4, sp, #0x90 @ pass key schedule |
e0202d94 AP |
1925 | #else |
1926 | add r4, $key, #248 @ pass key schedule | |
1927 | #endif | |
a2ea9f3e AB |
1928 | veor @XMM[1], @XMM[1], @XMM[9] |
1929 | mov r5, $rounds @ pass rounds | |
1930 | mov r0, sp | |
1931 | ||
1932 | bl _bsaes_encrypt8 | |
1933 | ||
29f41e8a | 1934 | vld1.64 {@XMM[8]-@XMM[9]}, [r0,:128]! |
a2ea9f3e AB |
1935 | veor @XMM[0], @XMM[0], @XMM[ 8] |
1936 | veor @XMM[1], @XMM[1], @XMM[ 9] | |
1937 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | |
1938 | ||
29f41e8a | 1939 | vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak |
a2ea9f3e | 1940 | b .Lxts_enc_done |
29f41e8a | 1941 | .align 4 |
a2ea9f3e AB |
1942 | .Lxts_enc_1: |
1943 | mov r0, sp | |
1944 | veor @XMM[0], @XMM[8] | |
1945 | mov r1, sp | |
1946 | vst1.8 {@XMM[0]}, [sp,:128] | |
1947 | mov r2, $key | |
1948 | mov r4, $fp @ preserve fp | |
1949 | ||
1950 | bl AES_encrypt | |
1951 | ||
1952 | vld1.8 {@XMM[0]}, [sp,:128] | |
1953 | veor @XMM[0], @XMM[0], @XMM[8] | |
1954 | vst1.8 {@XMM[0]}, [$out]! | |
1955 | mov $fp, r4 | |
1956 | ||
1957 | vmov @XMM[8], @XMM[9] @ next round tweak | |
1958 | ||
1959 | .Lxts_enc_done: | |
e0202d94 | 1960 | #ifndef XTS_CHAIN_TWEAK |
a2ea9f3e AB |
1961 | adds $len, #0x10 |
1962 | beq .Lxts_enc_ret | |
1963 | sub r6, $out, #0x10 | |
1964 | ||
1965 | .Lxts_enc_steal: | |
1966 | ldrb r0, [$inp], #1 | |
1967 | ldrb r1, [$out, #-0x10] | |
1968 | strb r0, [$out, #-0x10] | |
1969 | strb r1, [$out], #1 | |
1970 | ||
1971 | subs $len, #1 | |
1972 | bhi .Lxts_enc_steal | |
1973 | ||
1974 | vld1.8 {@XMM[0]}, [r6] | |
1975 | mov r0, sp | |
1976 | veor @XMM[0], @XMM[0], @XMM[8] | |
1977 | mov r1, sp | |
1978 | vst1.8 {@XMM[0]}, [sp,:128] | |
1979 | mov r2, $key | |
1980 | mov r4, $fp @ preserve fp | |
1981 | ||
1982 | bl AES_encrypt | |
1983 | ||
1984 | vld1.8 {@XMM[0]}, [sp,:128] | |
1985 | veor @XMM[0], @XMM[0], @XMM[8] | |
1986 | vst1.8 {@XMM[0]}, [r6] | |
1987 | mov $fp, r4 | |
e0202d94 | 1988 | #endif |
a2ea9f3e AB |
1989 | |
1990 | .Lxts_enc_ret: | |
29f41e8a AP |
1991 | bic r0, $fp, #0xf |
1992 | vmov.i32 q0, #0 | |
1993 | vmov.i32 q1, #0 | |
e0202d94 AP |
1994 | #ifdef XTS_CHAIN_TWEAK |
1995 | ldr r1, [$fp, #0x20+VFP_ABI_FRAME] @ chain tweak | |
1996 | #endif | |
a2ea9f3e | 1997 | .Lxts_enc_bzero: @ wipe key schedule [if any] |
29f41e8a | 1998 | vstmia sp!, {q0-q1} |
e0202d94 | 1999 | cmp sp, r0 |
a2ea9f3e AB |
2000 | bne .Lxts_enc_bzero |
2001 | ||
29f41e8a | 2002 | mov sp, $fp |
e0202d94 AP |
2003 | #ifdef XTS_CHAIN_TWEAK |
2004 | vst1.8 {@XMM[8]}, [r1] | |
2005 | #endif | |
2006 | VFP_ABI_POP | |
29f41e8a | 2007 | ldmia sp!, {r4-r10, pc} @ return |
a2ea9f3e AB |
2008 | |
2009 | .size bsaes_xts_encrypt,.-bsaes_xts_encrypt | |
2010 | ||
2011 | .globl bsaes_xts_decrypt | |
2012 | .type bsaes_xts_decrypt,%function | |
2013 | .align 4 | |
2014 | bsaes_xts_decrypt: | |
e0202d94 | 2015 | mov ip, sp |
29f41e8a | 2016 | stmdb sp!, {r4-r10, lr} @ 0x20 |
e0202d94 | 2017 | VFP_ABI_PUSH |
29f41e8a | 2018 | mov r6, sp @ future $fp |
a2ea9f3e AB |
2019 | |
2020 | mov $inp, r0 | |
2021 | mov $out, r1 | |
2022 | mov $len, r2 | |
2023 | mov $key, r3 | |
2024 | ||
e0202d94 AP |
2025 | sub r0, sp, #0x10 @ 0x10 |
2026 | bic r0, #0xf @ align at 16 bytes | |
2027 | mov sp, r0 | |
2028 | ||
2029 | #ifdef XTS_CHAIN_TWEAK | |
2030 | ldr r0, [ip] @ pointer to input tweak | |
2031 | #else | |
a2ea9f3e | 2032 | @ generate initial tweak |
e0202d94 | 2033 | ldr r0, [ip, #4] @ iv[] |
a2ea9f3e | 2034 | mov r1, sp |
e0202d94 | 2035 | ldr r2, [ip, #0] @ key2 |
a2ea9f3e | 2036 | bl AES_encrypt |
e0202d94 AP |
2037 | mov r0, sp @ pointer to initial tweak |
2038 | #endif | |
a2ea9f3e | 2039 | |
a2ea9f3e | 2040 | ldr $rounds, [$key, #240] @ get # of rounds |
29f41e8a | 2041 | mov $fp, r6 |
e0202d94 AP |
2042 | #ifndef BSAES_ASM_EXTENDED_KEY |
2043 | @ allocate the key schedule on the stack | |
2044 | sub r12, sp, $rounds, lsl#7 @ 128 bytes per inner round key | |
2045 | @ add r12, #`128-32` @ size of bit-sliced key schedule | |
2046 | sub r12, #`32+16` @ place for tweak[9] | |
a2ea9f3e AB |
2047 | |
2048 | @ populate the key schedule | |
2049 | mov r4, $key @ pass key | |
2050 | mov r5, $rounds @ pass # of rounds | |
e0202d94 AP |
2051 | mov sp, r12 |
2052 | add r12, #0x90 @ pass key schedule | |
a2ea9f3e | 2053 | bl _bsaes_key_convert |
29f41e8a AP |
2054 | add r4, sp, #0x90 |
2055 | vldmia r4, {@XMM[6]} | |
a2ea9f3e AB |
2056 | vstmia r12, {@XMM[15]} @ save last round key |
2057 | veor @XMM[7], @XMM[7], @XMM[6] @ fix up round 0 key | |
29f41e8a | 2058 | vstmia r4, {@XMM[7]} |
e0202d94 AP |
2059 | #else |
2060 | ldr r12, [$key, #244] | |
2061 | eors r12, #1 | |
2062 | beq 0f | |
2063 | ||
2064 | str r12, [$key, #244] | |
2065 | mov r4, $key @ pass key | |
2066 | mov r5, $rounds @ pass # of rounds | |
2067 | add r12, $key, #248 @ pass key schedule | |
2068 | bl _bsaes_key_convert | |
2069 | add r4, $key, #248 | |
2070 | vldmia r4, {@XMM[6]} | |
2071 | vstmia r12, {@XMM[15]} @ save last round key | |
2072 | veor @XMM[7], @XMM[7], @XMM[6] @ fix up round 0 key | |
2073 | vstmia r4, {@XMM[7]} | |
a2ea9f3e | 2074 | |
e0202d94 AP |
2075 | .align 2 |
2076 | 0: sub sp, #0x90 @ place for tweak[9] | |
2077 | #endif | |
29f41e8a | 2078 | vld1.8 {@XMM[8]}, [r0] @ initial tweak |
e0202d94 | 2079 | adr $magic, .Lxts_magic |
a2ea9f3e AB |
2080 | |
2081 | tst $len, #0xf @ if not multiple of 16 | |
e0202d94 | 2082 | it ne @ Thumb2 thing, sanity check in ARM |
29f41e8a | 2083 | subne $len, #0x10 @ subtract another 16 bytes |
a2ea9f3e AB |
2084 | subs $len, #0x80 |
2085 | ||
2086 | blo .Lxts_dec_short | |
2087 | b .Lxts_dec_loop | |
2088 | ||
2089 | .align 4 | |
2090 | .Lxts_dec_loop: | |
29f41e8a | 2091 | vldmia $magic, {$twmask} @ load XTS magic |
a2ea9f3e AB |
2092 | vshr.s64 @T[0], @XMM[8], #63 |
2093 | mov r0, sp | |
2094 | vand @T[0], @T[0], $twmask | |
2095 | ___ | |
2096 | for($i=9;$i<16;$i++) { | |
2097 | $code.=<<___; | |
2098 | vadd.u64 @XMM[$i], @XMM[$i-1], @XMM[$i-1] | |
29f41e8a | 2099 | vst1.64 {@XMM[$i-1]}, [r0,:128]! |
a2ea9f3e AB |
2100 | vswp `&Dhi("@T[0]")`,`&Dlo("@T[0]")` |
2101 | vshr.s64 @T[1], @XMM[$i], #63 | |
2102 | veor @XMM[$i], @XMM[$i], @T[0] | |
2103 | vand @T[1], @T[1], $twmask | |
2104 | ___ | |
2105 | @T=reverse(@T); | |
2106 | ||
2107 | $code.=<<___ if ($i>=10); | |
2108 | vld1.8 {@XMM[$i-10]}, [$inp]! | |
2109 | ___ | |
2110 | $code.=<<___ if ($i>=11); | |
2111 | veor @XMM[$i-11], @XMM[$i-11], @XMM[$i-3] | |
2112 | ___ | |
2113 | } | |
2114 | $code.=<<___; | |
2115 | vadd.u64 @XMM[8], @XMM[15], @XMM[15] | |
29f41e8a | 2116 | vst1.64 {@XMM[15]}, [r0,:128]! |
a2ea9f3e AB |
2117 | vswp `&Dhi("@T[0]")`,`&Dlo("@T[0]")` |
2118 | veor @XMM[8], @XMM[8], @T[0] | |
29f41e8a | 2119 | vst1.64 {@XMM[8]}, [r0,:128] @ next round tweak |
a2ea9f3e AB |
2120 | |
2121 | vld1.8 {@XMM[6]-@XMM[7]}, [$inp]! | |
2122 | veor @XMM[5], @XMM[5], @XMM[13] | |
e0202d94 | 2123 | #ifndef BSAES_ASM_EXTENDED_KEY |
29f41e8a | 2124 | add r4, sp, #0x90 @ pass key schedule |
e0202d94 AP |
2125 | #else |
2126 | add r4, $key, #248 @ pass key schedule | |
2127 | #endif | |
a2ea9f3e AB |
2128 | veor @XMM[6], @XMM[6], @XMM[14] |
2129 | mov r5, $rounds @ pass rounds | |
2130 | veor @XMM[7], @XMM[7], @XMM[15] | |
2131 | mov r0, sp | |
2132 | ||
2133 | bl _bsaes_decrypt8 | |
2134 | ||
29f41e8a AP |
2135 | vld1.64 {@XMM[ 8]-@XMM[ 9]}, [r0,:128]! |
2136 | vld1.64 {@XMM[10]-@XMM[11]}, [r0,:128]! | |
a2ea9f3e | 2137 | veor @XMM[0], @XMM[0], @XMM[ 8] |
29f41e8a | 2138 | vld1.64 {@XMM[12]-@XMM[13]}, [r0,:128]! |
a2ea9f3e AB |
2139 | veor @XMM[1], @XMM[1], @XMM[ 9] |
2140 | veor @XMM[8], @XMM[6], @XMM[10] | |
2141 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | |
2142 | veor @XMM[9], @XMM[4], @XMM[11] | |
29f41e8a | 2143 | vld1.64 {@XMM[14]-@XMM[15]}, [r0,:128]! |
a2ea9f3e AB |
2144 | veor @XMM[10], @XMM[2], @XMM[12] |
2145 | vst1.8 {@XMM[8]-@XMM[9]}, [$out]! | |
2146 | veor @XMM[11], @XMM[7], @XMM[13] | |
2147 | veor @XMM[12], @XMM[3], @XMM[14] | |
2148 | vst1.8 {@XMM[10]-@XMM[11]}, [$out]! | |
2149 | veor @XMM[13], @XMM[5], @XMM[15] | |
2150 | vst1.8 {@XMM[12]-@XMM[13]}, [$out]! | |
2151 | ||
29f41e8a | 2152 | vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak |
a2ea9f3e AB |
2153 | |
2154 | subs $len, #0x80 | |
2155 | bpl .Lxts_dec_loop | |
2156 | ||
2157 | .Lxts_dec_short: | |
2158 | adds $len, #0x70 | |
2159 | bmi .Lxts_dec_done | |
2160 | ||
29f41e8a | 2161 | vldmia $magic, {$twmask} @ load XTS magic |
a2ea9f3e AB |
2162 | vshr.s64 @T[0], @XMM[8], #63 |
2163 | mov r0, sp | |
2164 | vand @T[0], @T[0], $twmask | |
2165 | ___ | |
2166 | for($i=9;$i<16;$i++) { | |
2167 | $code.=<<___; | |
2168 | vadd.u64 @XMM[$i], @XMM[$i-1], @XMM[$i-1] | |
29f41e8a | 2169 | vst1.64 {@XMM[$i-1]}, [r0,:128]! |
a2ea9f3e AB |
2170 | vswp `&Dhi("@T[0]")`,`&Dlo("@T[0]")` |
2171 | vshr.s64 @T[1], @XMM[$i], #63 | |
2172 | veor @XMM[$i], @XMM[$i], @T[0] | |
2173 | vand @T[1], @T[1], $twmask | |
2174 | ___ | |
2175 | @T=reverse(@T); | |
2176 | ||
2177 | $code.=<<___ if ($i>=10); | |
2178 | vld1.8 {@XMM[$i-10]}, [$inp]! | |
2179 | subs $len, #0x10 | |
2180 | bmi .Lxts_dec_`$i-9` | |
2181 | ___ | |
2182 | $code.=<<___ if ($i>=11); | |
2183 | veor @XMM[$i-11], @XMM[$i-11], @XMM[$i-3] | |
2184 | ___ | |
2185 | } | |
2186 | $code.=<<___; | |
2187 | sub $len, #0x10 | |
29f41e8a | 2188 | vst1.64 {@XMM[15]}, [r0,:128] @ next round tweak |
a2ea9f3e AB |
2189 | |
2190 | vld1.8 {@XMM[6]}, [$inp]! | |
2191 | veor @XMM[5], @XMM[5], @XMM[13] | |
e0202d94 | 2192 | #ifndef BSAES_ASM_EXTENDED_KEY |
29f41e8a | 2193 | add r4, sp, #0x90 @ pass key schedule |
e0202d94 AP |
2194 | #else |
2195 | add r4, $key, #248 @ pass key schedule | |
2196 | #endif | |
a2ea9f3e AB |
2197 | veor @XMM[6], @XMM[6], @XMM[14] |
2198 | mov r5, $rounds @ pass rounds | |
2199 | mov r0, sp | |
2200 | ||
2201 | bl _bsaes_decrypt8 | |
2202 | ||
29f41e8a AP |
2203 | vld1.64 {@XMM[ 8]-@XMM[ 9]}, [r0,:128]! |
2204 | vld1.64 {@XMM[10]-@XMM[11]}, [r0,:128]! | |
a2ea9f3e | 2205 | veor @XMM[0], @XMM[0], @XMM[ 8] |
29f41e8a | 2206 | vld1.64 {@XMM[12]-@XMM[13]}, [r0,:128]! |
a2ea9f3e AB |
2207 | veor @XMM[1], @XMM[1], @XMM[ 9] |
2208 | veor @XMM[8], @XMM[6], @XMM[10] | |
2209 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | |
2210 | veor @XMM[9], @XMM[4], @XMM[11] | |
29f41e8a | 2211 | vld1.64 {@XMM[14]}, [r0,:128]! |
a2ea9f3e AB |
2212 | veor @XMM[10], @XMM[2], @XMM[12] |
2213 | vst1.8 {@XMM[8]-@XMM[9]}, [$out]! | |
2214 | veor @XMM[11], @XMM[7], @XMM[13] | |
2215 | veor @XMM[12], @XMM[3], @XMM[14] | |
2216 | vst1.8 {@XMM[10]-@XMM[11]}, [$out]! | |
2217 | vst1.8 {@XMM[12]}, [$out]! | |
2218 | ||
29f41e8a | 2219 | vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak |
a2ea9f3e | 2220 | b .Lxts_dec_done |
29f41e8a | 2221 | .align 4 |
a2ea9f3e | 2222 | .Lxts_dec_6: |
29f41e8a | 2223 | vst1.64 {@XMM[14]}, [r0,:128] @ next round tweak |
a2ea9f3e AB |
2224 | |
2225 | veor @XMM[4], @XMM[4], @XMM[12] | |
e0202d94 | 2226 | #ifndef BSAES_ASM_EXTENDED_KEY |
29f41e8a | 2227 | add r4, sp, #0x90 @ pass key schedule |
e0202d94 AP |
2228 | #else |
2229 | add r4, $key, #248 @ pass key schedule | |
2230 | #endif | |
a2ea9f3e AB |
2231 | veor @XMM[5], @XMM[5], @XMM[13] |
2232 | mov r5, $rounds @ pass rounds | |
2233 | mov r0, sp | |
2234 | ||
2235 | bl _bsaes_decrypt8 | |
2236 | ||
29f41e8a AP |
2237 | vld1.64 {@XMM[ 8]-@XMM[ 9]}, [r0,:128]! |
2238 | vld1.64 {@XMM[10]-@XMM[11]}, [r0,:128]! | |
a2ea9f3e | 2239 | veor @XMM[0], @XMM[0], @XMM[ 8] |
29f41e8a | 2240 | vld1.64 {@XMM[12]-@XMM[13]}, [r0,:128]! |
a2ea9f3e AB |
2241 | veor @XMM[1], @XMM[1], @XMM[ 9] |
2242 | veor @XMM[8], @XMM[6], @XMM[10] | |
2243 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | |
2244 | veor @XMM[9], @XMM[4], @XMM[11] | |
2245 | veor @XMM[10], @XMM[2], @XMM[12] | |
2246 | vst1.8 {@XMM[8]-@XMM[9]}, [$out]! | |
2247 | veor @XMM[11], @XMM[7], @XMM[13] | |
2248 | vst1.8 {@XMM[10]-@XMM[11]}, [$out]! | |
2249 | ||
29f41e8a | 2250 | vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak |
a2ea9f3e | 2251 | b .Lxts_dec_done |
29f41e8a | 2252 | .align 4 |
a2ea9f3e | 2253 | .Lxts_dec_5: |
29f41e8a | 2254 | vst1.64 {@XMM[13]}, [r0,:128] @ next round tweak |
a2ea9f3e AB |
2255 | |
2256 | veor @XMM[3], @XMM[3], @XMM[11] | |
e0202d94 | 2257 | #ifndef BSAES_ASM_EXTENDED_KEY |
29f41e8a | 2258 | add r4, sp, #0x90 @ pass key schedule |
e0202d94 AP |
2259 | #else |
2260 | add r4, $key, #248 @ pass key schedule | |
2261 | #endif | |
a2ea9f3e AB |
2262 | veor @XMM[4], @XMM[4], @XMM[12] |
2263 | mov r5, $rounds @ pass rounds | |
2264 | mov r0, sp | |
2265 | ||
2266 | bl _bsaes_decrypt8 | |
2267 | ||
29f41e8a AP |
2268 | vld1.64 {@XMM[ 8]-@XMM[ 9]}, [r0,:128]! |
2269 | vld1.64 {@XMM[10]-@XMM[11]}, [r0,:128]! | |
a2ea9f3e | 2270 | veor @XMM[0], @XMM[0], @XMM[ 8] |
29f41e8a | 2271 | vld1.64 {@XMM[12]}, [r0,:128]! |
a2ea9f3e AB |
2272 | veor @XMM[1], @XMM[1], @XMM[ 9] |
2273 | veor @XMM[8], @XMM[6], @XMM[10] | |
2274 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | |
2275 | veor @XMM[9], @XMM[4], @XMM[11] | |
2276 | veor @XMM[10], @XMM[2], @XMM[12] | |
2277 | vst1.8 {@XMM[8]-@XMM[9]}, [$out]! | |
2278 | vst1.8 {@XMM[10]}, [$out]! | |
2279 | ||
29f41e8a | 2280 | vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak |
a2ea9f3e | 2281 | b .Lxts_dec_done |
29f41e8a | 2282 | .align 4 |
a2ea9f3e | 2283 | .Lxts_dec_4: |
29f41e8a | 2284 | vst1.64 {@XMM[12]}, [r0,:128] @ next round tweak |
a2ea9f3e AB |
2285 | |
2286 | veor @XMM[2], @XMM[2], @XMM[10] | |
e0202d94 | 2287 | #ifndef BSAES_ASM_EXTENDED_KEY |
29f41e8a | 2288 | add r4, sp, #0x90 @ pass key schedule |
e0202d94 AP |
2289 | #else |
2290 | add r4, $key, #248 @ pass key schedule | |
2291 | #endif | |
a2ea9f3e AB |
2292 | veor @XMM[3], @XMM[3], @XMM[11] |
2293 | mov r5, $rounds @ pass rounds | |
2294 | mov r0, sp | |
2295 | ||
2296 | bl _bsaes_decrypt8 | |
2297 | ||
29f41e8a AP |
2298 | vld1.64 {@XMM[ 8]-@XMM[ 9]}, [r0,:128]! |
2299 | vld1.64 {@XMM[10]-@XMM[11]}, [r0,:128]! | |
a2ea9f3e AB |
2300 | veor @XMM[0], @XMM[0], @XMM[ 8] |
2301 | veor @XMM[1], @XMM[1], @XMM[ 9] | |
2302 | veor @XMM[8], @XMM[6], @XMM[10] | |
2303 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | |
2304 | veor @XMM[9], @XMM[4], @XMM[11] | |
2305 | vst1.8 {@XMM[8]-@XMM[9]}, [$out]! | |
2306 | ||
29f41e8a | 2307 | vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak |
a2ea9f3e | 2308 | b .Lxts_dec_done |
29f41e8a | 2309 | .align 4 |
a2ea9f3e | 2310 | .Lxts_dec_3: |
29f41e8a | 2311 | vst1.64 {@XMM[11]}, [r0,:128] @ next round tweak |
a2ea9f3e AB |
2312 | |
2313 | veor @XMM[1], @XMM[1], @XMM[9] | |
e0202d94 | 2314 | #ifndef BSAES_ASM_EXTENDED_KEY |
29f41e8a | 2315 | add r4, sp, #0x90 @ pass key schedule |
e0202d94 AP |
2316 | #else |
2317 | add r4, $key, #248 @ pass key schedule | |
2318 | #endif | |
a2ea9f3e AB |
2319 | veor @XMM[2], @XMM[2], @XMM[10] |
2320 | mov r5, $rounds @ pass rounds | |
2321 | mov r0, sp | |
2322 | ||
2323 | bl _bsaes_decrypt8 | |
2324 | ||
29f41e8a AP |
2325 | vld1.64 {@XMM[8]-@XMM[9]}, [r0,:128]! |
2326 | vld1.64 {@XMM[10]}, [r0,:128]! | |
a2ea9f3e AB |
2327 | veor @XMM[0], @XMM[0], @XMM[ 8] |
2328 | veor @XMM[1], @XMM[1], @XMM[ 9] | |
2329 | veor @XMM[8], @XMM[6], @XMM[10] | |
2330 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | |
2331 | vst1.8 {@XMM[8]}, [$out]! | |
2332 | ||
29f41e8a | 2333 | vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak |
a2ea9f3e | 2334 | b .Lxts_dec_done |
29f41e8a | 2335 | .align 4 |
a2ea9f3e | 2336 | .Lxts_dec_2: |
29f41e8a | 2337 | vst1.64 {@XMM[10]}, [r0,:128] @ next round tweak |
a2ea9f3e AB |
2338 | |
2339 | veor @XMM[0], @XMM[0], @XMM[8] | |
e0202d94 | 2340 | #ifndef BSAES_ASM_EXTENDED_KEY |
29f41e8a | 2341 | add r4, sp, #0x90 @ pass key schedule |
e0202d94 AP |
2342 | #else |
2343 | add r4, $key, #248 @ pass key schedule | |
2344 | #endif | |
a2ea9f3e AB |
2345 | veor @XMM[1], @XMM[1], @XMM[9] |
2346 | mov r5, $rounds @ pass rounds | |
2347 | mov r0, sp | |
2348 | ||
2349 | bl _bsaes_decrypt8 | |
2350 | ||
29f41e8a | 2351 | vld1.64 {@XMM[8]-@XMM[9]}, [r0,:128]! |
a2ea9f3e AB |
2352 | veor @XMM[0], @XMM[0], @XMM[ 8] |
2353 | veor @XMM[1], @XMM[1], @XMM[ 9] | |
2354 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | |
2355 | ||
29f41e8a | 2356 | vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak |
a2ea9f3e | 2357 | b .Lxts_dec_done |
29f41e8a | 2358 | .align 4 |
a2ea9f3e AB |
2359 | .Lxts_dec_1: |
2360 | mov r0, sp | |
2361 | veor @XMM[0], @XMM[8] | |
2362 | mov r1, sp | |
2363 | vst1.8 {@XMM[0]}, [sp,:128] | |
2364 | mov r2, $key | |
2365 | mov r4, $fp @ preserve fp | |
29f41e8a | 2366 | mov r5, $magic @ preserve magic |
a2ea9f3e AB |
2367 | |
2368 | bl AES_decrypt | |
2369 | ||
2370 | vld1.8 {@XMM[0]}, [sp,:128] | |
2371 | veor @XMM[0], @XMM[0], @XMM[8] | |
2372 | vst1.8 {@XMM[0]}, [$out]! | |
2373 | mov $fp, r4 | |
29f41e8a | 2374 | mov $magic, r5 |
a2ea9f3e AB |
2375 | |
2376 | vmov @XMM[8], @XMM[9] @ next round tweak | |
2377 | ||
2378 | .Lxts_dec_done: | |
e0202d94 | 2379 | #ifndef XTS_CHAIN_TWEAK |
a2ea9f3e AB |
2380 | adds $len, #0x10 |
2381 | beq .Lxts_dec_ret | |
2382 | ||
2383 | @ calculate one round of extra tweak for the stolen ciphertext | |
29f41e8a | 2384 | vldmia $magic, {$twmask} |
a2ea9f3e AB |
2385 | vshr.s64 @XMM[6], @XMM[8], #63 |
2386 | vand @XMM[6], @XMM[6], $twmask | |
2387 | vadd.u64 @XMM[9], @XMM[8], @XMM[8] | |
2388 | vswp `&Dhi("@XMM[6]")`,`&Dlo("@XMM[6]")` | |
2389 | veor @XMM[9], @XMM[9], @XMM[6] | |
2390 | ||
2391 | @ perform the final decryption with the last tweak value | |
2392 | vld1.8 {@XMM[0]}, [$inp]! | |
2393 | mov r0, sp | |
2394 | veor @XMM[0], @XMM[0], @XMM[9] | |
2395 | mov r1, sp | |
2396 | vst1.8 {@XMM[0]}, [sp,:128] | |
2397 | mov r2, $key | |
2398 | mov r4, $fp @ preserve fp | |
2399 | ||
2400 | bl AES_decrypt | |
2401 | ||
2402 | vld1.8 {@XMM[0]}, [sp,:128] | |
2403 | veor @XMM[0], @XMM[0], @XMM[9] | |
2404 | vst1.8 {@XMM[0]}, [$out] | |
2405 | ||
2406 | mov r6, $out | |
2407 | .Lxts_dec_steal: | |
2408 | ldrb r1, [$out] | |
2409 | ldrb r0, [$inp], #1 | |
2410 | strb r1, [$out, #0x10] | |
2411 | strb r0, [$out], #1 | |
2412 | ||
2413 | subs $len, #1 | |
2414 | bhi .Lxts_dec_steal | |
2415 | ||
2416 | vld1.8 {@XMM[0]}, [r6] | |
2417 | mov r0, sp | |
2418 | veor @XMM[0], @XMM[8] | |
2419 | mov r1, sp | |
2420 | vst1.8 {@XMM[0]}, [sp,:128] | |
2421 | mov r2, $key | |
2422 | ||
2423 | bl AES_decrypt | |
2424 | ||
2425 | vld1.8 {@XMM[0]}, [sp,:128] | |
2426 | veor @XMM[0], @XMM[0], @XMM[8] | |
2427 | vst1.8 {@XMM[0]}, [r6] | |
2428 | mov $fp, r4 | |
e0202d94 | 2429 | #endif |
a2ea9f3e AB |
2430 | |
2431 | .Lxts_dec_ret: | |
29f41e8a AP |
2432 | bic r0, $fp, #0xf |
2433 | vmov.i32 q0, #0 | |
2434 | vmov.i32 q1, #0 | |
e0202d94 AP |
2435 | #ifdef XTS_CHAIN_TWEAK |
2436 | ldr r1, [$fp, #0x20+VFP_ABI_FRAME] @ chain tweak | |
2437 | #endif | |
a2ea9f3e | 2438 | .Lxts_dec_bzero: @ wipe key schedule [if any] |
29f41e8a | 2439 | vstmia sp!, {q0-q1} |
e0202d94 | 2440 | cmp sp, r0 |
a2ea9f3e AB |
2441 | bne .Lxts_dec_bzero |
2442 | ||
29f41e8a | 2443 | mov sp, $fp |
e0202d94 AP |
2444 | #ifdef XTS_CHAIN_TWEAK |
2445 | vst1.8 {@XMM[8]}, [r1] | |
2446 | #endif | |
2447 | VFP_ABI_POP | |
29f41e8a | 2448 | ldmia sp!, {r4-r10, pc} @ return |
a2ea9f3e AB |
2449 | |
2450 | .size bsaes_xts_decrypt,.-bsaes_xts_decrypt | |
2451 | ___ | |
2452 | } | |
75fe4223 AP |
2453 | $code.=<<___; |
2454 | #endif | |
2455 | ___ | |
c4a52a6d AP |
2456 | |
2457 | $code =~ s/\`([^\`]*)\`/eval($1)/gem; | |
2458 | ||
e0202d94 AP |
2459 | open SELF,$0; |
2460 | while(<SELF>) { | |
2461 | next if (/^#!/); | |
2462 | last if (!s/^#/@/ and !/^$/); | |
2463 | print; | |
2464 | } | |
2465 | close SELF; | |
2466 | ||
c4a52a6d AP |
2467 | print $code; |
2468 | ||
2469 | close STDOUT; |