1 2 @ ==================================================================== 3 @ Written by Andy Polyakov <appro@openssl.org> for the OpenSSL 4 @ project. The module is, however, dual licensed under OpenSSL and 5 @ CRYPTOGAMS licenses depending on where you obtain it. For further 6 @ details see http://www.openssl.org/~appro/cryptogams/. 7 @ ==================================================================== 8 9 @ AES for ARMv4 10 11 @ January 2007. 12 @ 13 @ Code uses single 1K S-box and is >2 times faster than code generated 14 @ by gcc-3.4.1. This is thanks to unique feature of ARMv4 ISA, which 15 @ allows to merge logical or arithmetic operation with shift or rotate 16 @ in one instruction and emit combined result every cycle. The module 17 @ is endian-neutral. The performance is ~42 cycles/byte for 128-bit 18 @ key [on single-issue Xscale PXA250 core]. 19 20 @ May 2007. 21 @ 22 @ AES_set_[en|de]crypt_key is added. 23 24 @ July 2010. 25 @ 26 @ Rescheduling for dual-issue pipeline resulted in 12% improvement on 27 @ Cortex A8 core and ~25 cycles per byte processed with 128-bit key. 28 29 @ February 2011. 30 @ 31 @ Profiler-assisted and platform-specific optimization resulted in 16% 32 @ improvement on Cortex A8 core and ~21.5 cycles per byte. 33 34 #if defined(__arm__) 35 #ifndef __KERNEL__ 36 # include "arm_arch.h" 37 #else 38 # define __ARM_ARCH__ __LINUX_ARM_ARCH__ 39 #endif 40 41 .text 42 #if __ARM_ARCH__<7 43 .code 32 44 #else 45 .syntax unified 46 # ifdef __thumb2__ 47 .thumb 48 # else 49 .code 32 50 # endif 51 #endif 52 53 .type AES_Te,%object 54 .align 5 55 AES_Te: 56 .word 0xc66363a5, 0xf87c7c84, 0xee777799, 0xf67b7b8d 57 .word 0xfff2f20d, 0xd66b6bbd, 0xde6f6fb1, 0x91c5c554 58 .word 0x60303050, 0x02010103, 0xce6767a9, 0x562b2b7d 59 .word 0xe7fefe19, 0xb5d7d762, 0x4dababe6, 0xec76769a 60 .word 0x8fcaca45, 0x1f82829d, 0x89c9c940, 0xfa7d7d87 61 .word 0xeffafa15, 0xb25959eb, 0x8e4747c9, 0xfbf0f00b 62 .word 0x41adadec, 0xb3d4d467, 0x5fa2a2fd, 0x45afafea 63 .word 0x239c9cbf, 0x53a4a4f7, 0xe4727296, 0x9bc0c05b 64 .word 0x75b7b7c2, 0xe1fdfd1c, 0x3d9393ae, 0x4c26266a 65 .word 0x6c36365a, 0x7e3f3f41, 0xf5f7f702, 0x83cccc4f 66 .word 0x6834345c, 0x51a5a5f4, 0xd1e5e534, 0xf9f1f108 67 .word 0xe2717193, 0xabd8d873, 0x62313153, 0x2a15153f 68 .word 0x0804040c, 0x95c7c752, 0x46232365, 0x9dc3c35e 69 .word 0x30181828, 0x379696a1, 0x0a05050f, 0x2f9a9ab5 70 .word 0x0e070709, 0x24121236, 0x1b80809b, 0xdfe2e23d 71 .word 0xcdebeb26, 0x4e272769, 0x7fb2b2cd, 0xea75759f 72 .word 0x1209091b, 0x1d83839e, 0x582c2c74, 0x341a1a2e 73 .word 0x361b1b2d, 0xdc6e6eb2, 0xb45a5aee, 0x5ba0a0fb 74 .word 0xa45252f6, 0x763b3b4d, 0xb7d6d661, 0x7db3b3ce 75 .word 0x5229297b, 0xdde3e33e, 0x5e2f2f71, 0x13848497 76 .word 0xa65353f5, 0xb9d1d168, 0x00000000, 0xc1eded2c 77 .word 0x40202060, 0xe3fcfc1f, 0x79b1b1c8, 0xb65b5bed 78 .word 0xd46a6abe, 0x8dcbcb46, 0x67bebed9, 0x7239394b 79 .word 0x944a4ade, 0x984c4cd4, 0xb05858e8, 0x85cfcf4a 80 .word 0xbbd0d06b, 0xc5efef2a, 0x4faaaae5, 0xedfbfb16 81 .word 0x864343c5, 0x9a4d4dd7, 0x66333355, 0x11858594 82 .word 0x8a4545cf, 0xe9f9f910, 0x04020206, 0xfe7f7f81 83 .word 0xa05050f0, 0x783c3c44, 0x259f9fba, 0x4ba8a8e3 84 .word 0xa25151f3, 0x5da3a3fe, 0x804040c0, 0x058f8f8a 85 .word 0x3f9292ad, 0x219d9dbc, 0x70383848, 0xf1f5f504 86 .word 0x63bcbcdf, 0x77b6b6c1, 0xafdada75, 0x42212163 87 .word 0x20101030, 0xe5ffff1a, 0xfdf3f30e, 0xbfd2d26d 88 .word 0x81cdcd4c, 0x180c0c14, 0x26131335, 0xc3ecec2f 89 .word 0xbe5f5fe1, 0x359797a2, 0x884444cc, 0x2e171739 90 .word 0x93c4c457, 0x55a7a7f2, 0xfc7e7e82, 0x7a3d3d47 91 .word 0xc86464ac, 0xba5d5de7, 0x3219192b, 0xe6737395 92 .word 0xc06060a0, 0x19818198, 0x9e4f4fd1, 0xa3dcdc7f 93 .word 0x44222266, 0x542a2a7e, 0x3b9090ab, 0x0b888883 94 .word 0x8c4646ca, 0xc7eeee29, 0x6bb8b8d3, 0x2814143c 95 .word 0xa7dede79, 0xbc5e5ee2, 0x160b0b1d, 0xaddbdb76 96 .word 0xdbe0e03b, 0x64323256, 0x743a3a4e, 0x140a0a1e 97 .word 0x924949db, 0x0c06060a, 0x4824246c, 0xb85c5ce4 98 .word 0x9fc2c25d, 0xbdd3d36e, 0x43acacef, 0xc46262a6 99 .word 0x399191a8, 0x319595a4, 0xd3e4e437, 0xf279798b 100 .word 0xd5e7e732, 0x8bc8c843, 0x6e373759, 0xda6d6db7 101 .word 0x018d8d8c, 0xb1d5d564, 0x9c4e4ed2, 0x49a9a9e0 102 .word 0xd86c6cb4, 0xac5656fa, 0xf3f4f407, 0xcfeaea25 103 .word 0xca6565af, 0xf47a7a8e, 0x47aeaee9, 0x10080818 104 .word 0x6fbabad5, 0xf0787888, 0x4a25256f, 0x5c2e2e72 105 .word 0x381c1c24, 0x57a6a6f1, 0x73b4b4c7, 0x97c6c651 106 .word 0xcbe8e823, 0xa1dddd7c, 0xe874749c, 0x3e1f1f21 107 .word 0x964b4bdd, 0x61bdbddc, 0x0d8b8b86, 0x0f8a8a85 108 .word 0xe0707090, 0x7c3e3e42, 0x71b5b5c4, 0xcc6666aa 109 .word 0x904848d8, 0x06030305, 0xf7f6f601, 0x1c0e0e12 110 .word 0xc26161a3, 0x6a35355f, 0xae5757f9, 0x69b9b9d0 111 .word 0x17868691, 0x99c1c158, 0x3a1d1d27, 0x279e9eb9 112 .word 0xd9e1e138, 0xebf8f813, 0x2b9898b3, 0x22111133 113 .word 0xd26969bb, 0xa9d9d970, 0x078e8e89, 0x339494a7 114 .word 0x2d9b9bb6, 0x3c1e1e22, 0x15878792, 0xc9e9e920 115 .word 0x87cece49, 0xaa5555ff, 0x50282878, 0xa5dfdf7a 116 .word 0x038c8c8f, 0x59a1a1f8, 0x09898980, 0x1a0d0d17 117 .word 0x65bfbfda, 0xd7e6e631, 0x844242c6, 0xd06868b8 118 .word 0x824141c3, 0x299999b0, 0x5a2d2d77, 0x1e0f0f11 119 .word 0x7bb0b0cb, 0xa85454fc, 0x6dbbbbd6, 0x2c16163a 120 @ Te4[256] 121 .byte 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5 122 .byte 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76 123 .byte 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0 124 .byte 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0 125 .byte 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc 126 .byte 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15 127 .byte 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a 128 .byte 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75 129 .byte 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0 130 .byte 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84 131 .byte 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b 132 .byte 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf 133 .byte 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85 134 .byte 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8 135 .byte 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5 136 .byte 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2 137 .byte 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17 138 .byte 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73 139 .byte 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88 140 .byte 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb 141 .byte 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c 142 .byte 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79 143 .byte 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9 144 .byte 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08 145 .byte 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6 146 .byte 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a 147 .byte 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e 148 .byte 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e 149 .byte 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94 150 .byte 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf 151 .byte 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68 152 .byte 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16 153 @ rcon[] 154 .word 0x01000000, 0x02000000, 0x04000000, 0x08000000 155 .word 0x10000000, 0x20000000, 0x40000000, 0x80000000 156 .word 0x1B000000, 0x36000000, 0, 0, 0, 0, 0, 0 157 .size AES_Te,.-AES_Te 158 159 @ void asm_AES_encrypt(const unsigned char *in, unsigned char *out, 160 @ const AES_KEY *key) { 161 .global asm_AES_encrypt 162 .hidden asm_AES_encrypt 163 .type asm_AES_encrypt,%function 164 .align 5 165 asm_AES_encrypt: 166 #if __ARM_ARCH__<7 167 sub r3,pc,#8 @ asm_AES_encrypt 168 #else 169 adr r3,asm_AES_encrypt 170 #endif 171 stmdb sp!,{r1,r4-r12,lr} 172 mov r12,r0 @ inp 173 mov r11,r2 174 sub r10,r3,#asm_AES_encrypt-AES_Te @ Te 175 #if __ARM_ARCH__<7 176 ldrb r0,[r12,#3] @ load input data in endian-neutral 177 ldrb r4,[r12,#2] @ manner... 178 ldrb r5,[r12,#1] 179 ldrb r6,[r12,#0] 180 orr r0,r0,r4,lsl#8 181 ldrb r1,[r12,#7] 182 orr r0,r0,r5,lsl#16 183 ldrb r4,[r12,#6] 184 orr r0,r0,r6,lsl#24 185 ldrb r5,[r12,#5] 186 ldrb r6,[r12,#4] 187 orr r1,r1,r4,lsl#8 188 ldrb r2,[r12,#11] 189 orr r1,r1,r5,lsl#16 190 ldrb r4,[r12,#10] 191 orr r1,r1,r6,lsl#24 192 ldrb r5,[r12,#9] 193 ldrb r6,[r12,#8] 194 orr r2,r2,r4,lsl#8 195 ldrb r3,[r12,#15] 196 orr r2,r2,r5,lsl#16 197 ldrb r4,[r12,#14] 198 orr r2,r2,r6,lsl#24 199 ldrb r5,[r12,#13] 200 ldrb r6,[r12,#12] 201 orr r3,r3,r4,lsl#8 202 orr r3,r3,r5,lsl#16 203 orr r3,r3,r6,lsl#24 204 #else 205 ldr r0,[r12,#0] 206 ldr r1,[r12,#4] 207 ldr r2,[r12,#8] 208 ldr r3,[r12,#12] 209 #ifdef __ARMEL__ 210 rev r0,r0 211 rev r1,r1 212 rev r2,r2 213 rev r3,r3 214 #endif 215 #endif 216 bl _armv4_AES_encrypt 217 218 ldr r12,[sp],#4 @ pop out 219 #if __ARM_ARCH__>=7 220 #ifdef __ARMEL__ 221 rev r0,r0 222 rev r1,r1 223 rev r2,r2 224 rev r3,r3 225 #endif 226 str r0,[r12,#0] 227 str r1,[r12,#4] 228 str r2,[r12,#8] 229 str r3,[r12,#12] 230 #else 231 mov r4,r0,lsr#24 @ write output in endian-neutral 232 mov r5,r0,lsr#16 @ manner... 233 mov r6,r0,lsr#8 234 strb r4,[r12,#0] 235 strb r5,[r12,#1] 236 mov r4,r1,lsr#24 237 strb r6,[r12,#2] 238 mov r5,r1,lsr#16 239 strb r0,[r12,#3] 240 mov r6,r1,lsr#8 241 strb r4,[r12,#4] 242 strb r5,[r12,#5] 243 mov r4,r2,lsr#24 244 strb r6,[r12,#6] 245 mov r5,r2,lsr#16 246 strb r1,[r12,#7] 247 mov r6,r2,lsr#8 248 strb r4,[r12,#8] 249 strb r5,[r12,#9] 250 mov r4,r3,lsr#24 251 strb r6,[r12,#10] 252 mov r5,r3,lsr#16 253 strb r2,[r12,#11] 254 mov r6,r3,lsr#8 255 strb r4,[r12,#12] 256 strb r5,[r12,#13] 257 strb r6,[r12,#14] 258 strb r3,[r12,#15] 259 #endif 260 #if __ARM_ARCH__>=5 261 ldmia sp!,{r4-r12,pc} 262 #else 263 ldmia sp!,{r4-r12,lr} 264 tst lr,#1 265 moveq pc,lr @ be binary compatible with V4, yet 266 .word 0xe12fff1e @ interoperable with Thumb ISA:-) 267 #endif 268 .size asm_AES_encrypt,.-asm_AES_encrypt 269 270 .type _armv4_AES_encrypt,%function 271 .align 2 272 _armv4_AES_encrypt: 273 str lr,[sp,#-4]! @ push lr 274 ldmia r11!,{r4-r7} 275 eor r0,r0,r4 276 ldr r12,[r11,#240-16] 277 eor r1,r1,r5 278 eor r2,r2,r6 279 eor r3,r3,r7 280 sub r12,r12,#1 281 mov lr,#255 282 283 and r7,lr,r0 284 and r8,lr,r0,lsr#8 285 and r9,lr,r0,lsr#16 286 mov r0,r0,lsr#24 287 .Lenc_loop: 288 ldr r4,[r10,r7,lsl#2] @ Te3[s0>>0] 289 and r7,lr,r1,lsr#16 @ i0 290 ldr r5,[r10,r8,lsl#2] @ Te2[s0>>8] 291 and r8,lr,r1 292 ldr r6,[r10,r9,lsl#2] @ Te1[s0>>16] 293 and r9,lr,r1,lsr#8 294 ldr r0,[r10,r0,lsl#2] @ Te0[s0>>24] 295 mov r1,r1,lsr#24 296 297 ldr r7,[r10,r7,lsl#2] @ Te1[s1>>16] 298 ldr r8,[r10,r8,lsl#2] @ Te3[s1>>0] 299 ldr r9,[r10,r9,lsl#2] @ Te2[s1>>8] 300 eor r0,r0,r7,ror#8 301 ldr r1,[r10,r1,lsl#2] @ Te0[s1>>24] 302 and r7,lr,r2,lsr#8 @ i0 303 eor r5,r5,r8,ror#8 304 and r8,lr,r2,lsr#16 @ i1 305 eor r6,r6,r9,ror#8 306 and r9,lr,r2 307 ldr r7,[r10,r7,lsl#2] @ Te2[s2>>8] 308 eor r1,r1,r4,ror#24 309 ldr r8,[r10,r8,lsl#2] @ Te1[s2>>16] 310 mov r2,r2,lsr#24 311 312 ldr r9,[r10,r9,lsl#2] @ Te3[s2>>0] 313 eor r0,r0,r7,ror#16 314 ldr r2,[r10,r2,lsl#2] @ Te0[s2>>24] 315 and r7,lr,r3 @ i0 316 eor r1,r1,r8,ror#8 317 and r8,lr,r3,lsr#8 @ i1 318 eor r6,r6,r9,ror#16 319 and r9,lr,r3,lsr#16 @ i2 320 ldr r7,[r10,r7,lsl#2] @ Te3[s3>>0] 321 eor r2,r2,r5,ror#16 322 ldr r8,[r10,r8,lsl#2] @ Te2[s3>>8] 323 mov r3,r3,lsr#24 324 325 ldr r9,[r10,r9,lsl#2] @ Te1[s3>>16] 326 eor r0,r0,r7,ror#24 327 ldr r7,[r11],#16 328 eor r1,r1,r8,ror#16 329 ldr r3,[r10,r3,lsl#2] @ Te0[s3>>24] 330 eor r2,r2,r9,ror#8 331 ldr r4,[r11,#-12] 332 eor r3,r3,r6,ror#8 333 334 ldr r5,[r11,#-8] 335 eor r0,r0,r7 336 ldr r6,[r11,#-4] 337 and r7,lr,r0 338 eor r1,r1,r4 339 and r8,lr,r0,lsr#8 340 eor r2,r2,r5 341 and r9,lr,r0,lsr#16 342 eor r3,r3,r6 343 mov r0,r0,lsr#24 344 345 subs r12,r12,#1 346 bne .Lenc_loop 347 348 add r10,r10,#2 349 350 ldrb r4,[r10,r7,lsl#2] @ Te4[s0>>0] 351 and r7,lr,r1,lsr#16 @ i0 352 ldrb r5,[r10,r8,lsl#2] @ Te4[s0>>8] 353 and r8,lr,r1 354 ldrb r6,[r10,r9,lsl#2] @ Te4[s0>>16] 355 and r9,lr,r1,lsr#8 356 ldrb r0,[r10,r0,lsl#2] @ Te4[s0>>24] 357 mov r1,r1,lsr#24 358 359 ldrb r7,[r10,r7,lsl#2] @ Te4[s1>>16] 360 ldrb r8,[r10,r8,lsl#2] @ Te4[s1>>0] 361 ldrb r9,[r10,r9,lsl#2] @ Te4[s1>>8] 362 eor r0,r7,r0,lsl#8 363 ldrb r1,[r10,r1,lsl#2] @ Te4[s1>>24] 364 and r7,lr,r2,lsr#8 @ i0 365 eor r5,r8,r5,lsl#8 366 and r8,lr,r2,lsr#16 @ i1 367 eor r6,r9,r6,lsl#8 368 and r9,lr,r2 369 ldrb r7,[r10,r7,lsl#2] @ Te4[s2>>8] 370 eor r1,r4,r1,lsl#24 371 ldrb r8,[r10,r8,lsl#2] @ Te4[s2>>16] 372 mov r2,r2,lsr#24 373 374 ldrb r9,[r10,r9,lsl#2] @ Te4[s2>>0] 375 eor r0,r7,r0,lsl#8 376 ldrb r2,[r10,r2,lsl#2] @ Te4[s2>>24] 377 and r7,lr,r3 @ i0 378 eor r1,r1,r8,lsl#16 379 and r8,lr,r3,lsr#8 @ i1 380 eor r6,r9,r6,lsl#8 381 and r9,lr,r3,lsr#16 @ i2 382 ldrb r7,[r10,r7,lsl#2] @ Te4[s3>>0] 383 eor r2,r5,r2,lsl#24 384 ldrb r8,[r10,r8,lsl#2] @ Te4[s3>>8] 385 mov r3,r3,lsr#24 386 387 ldrb r9,[r10,r9,lsl#2] @ Te4[s3>>16] 388 eor r0,r7,r0,lsl#8 389 ldr r7,[r11,#0] 390 ldrb r3,[r10,r3,lsl#2] @ Te4[s3>>24] 391 eor r1,r1,r8,lsl#8 392 ldr r4,[r11,#4] 393 eor r2,r2,r9,lsl#16 394 ldr r5,[r11,#8] 395 eor r3,r6,r3,lsl#24 396 ldr r6,[r11,#12] 397 398 eor r0,r0,r7 399 eor r1,r1,r4 400 eor r2,r2,r5 401 eor r3,r3,r6 402 403 sub r10,r10,#2 404 ldr pc,[sp],#4 @ pop and return 405 .size _armv4_AES_encrypt,.-_armv4_AES_encrypt 406 407 .global asm_AES_set_encrypt_key 408 .hidden asm_AES_set_encrypt_key 409 .type asm_AES_set_encrypt_key,%function 410 .align 5 411 asm_AES_set_encrypt_key: 412 _armv4_AES_set_encrypt_key: 413 #if __ARM_ARCH__<7 414 sub r3,pc,#8 @ asm_AES_set_encrypt_key 415 #else 416 adr r3,asm_AES_set_encrypt_key 417 #endif 418 teq r0,#0 419 #if __ARM_ARCH__>=7 420 itt eq @ Thumb2 thing, sanity check in ARM 421 #endif 422 moveq r0,#-1 423 beq .Labrt 424 teq r2,#0 425 #if __ARM_ARCH__>=7 426 itt eq @ Thumb2 thing, sanity check in ARM 427 #endif 428 moveq r0,#-1 429 beq .Labrt 430 431 teq r1,#128 432 beq .Lok 433 teq r1,#192 434 beq .Lok 435 teq r1,#256 436 #if __ARM_ARCH__>=7 437 itt ne @ Thumb2 thing, sanity check in ARM 438 #endif 439 movne r0,#-1 440 bne .Labrt 441 442 .Lok: stmdb sp!,{r4-r12,lr} 443 sub r10,r3,#_armv4_AES_set_encrypt_key-AES_Te-1024 @ Te4 444 445 mov r12,r0 @ inp 446 mov lr,r1 @ bits 447 mov r11,r2 @ key 448 449 #if __ARM_ARCH__<7 450 ldrb r0,[r12,#3] @ load input data in endian-neutral 451 ldrb r4,[r12,#2] @ manner... 452 ldrb r5,[r12,#1] 453 ldrb r6,[r12,#0] 454 orr r0,r0,r4,lsl#8 455 ldrb r1,[r12,#7] 456 orr r0,r0,r5,lsl#16 457 ldrb r4,[r12,#6] 458 orr r0,r0,r6,lsl#24 459 ldrb r5,[r12,#5] 460 ldrb r6,[r12,#4] 461 orr r1,r1,r4,lsl#8 462 ldrb r2,[r12,#11] 463 orr r1,r1,r5,lsl#16 464 ldrb r4,[r12,#10] 465 orr r1,r1,r6,lsl#24 466 ldrb r5,[r12,#9] 467 ldrb r6,[r12,#8] 468 orr r2,r2,r4,lsl#8 469 ldrb r3,[r12,#15] 470 orr r2,r2,r5,lsl#16 471 ldrb r4,[r12,#14] 472 orr r2,r2,r6,lsl#24 473 ldrb r5,[r12,#13] 474 ldrb r6,[r12,#12] 475 orr r3,r3,r4,lsl#8 476 str r0,[r11],#16 477 orr r3,r3,r5,lsl#16 478 str r1,[r11,#-12] 479 orr r3,r3,r6,lsl#24 480 str r2,[r11,#-8] 481 str r3,[r11,#-4] 482 #else 483 ldr r0,[r12,#0] 484 ldr r1,[r12,#4] 485 ldr r2,[r12,#8] 486 ldr r3,[r12,#12] 487 #ifdef __ARMEL__ 488 rev r0,r0 489 rev r1,r1 490 rev r2,r2 491 rev r3,r3 492 #endif 493 str r0,[r11],#16 494 str r1,[r11,#-12] 495 str r2,[r11,#-8] 496 str r3,[r11,#-4] 497 #endif 498 499 teq lr,#128 500 bne .Lnot128 501 mov r12,#10 502 str r12,[r11,#240-16] 503 add r6,r10,#256 @ rcon 504 mov lr,#255 505 506 .L128_loop: 507 and r5,lr,r3,lsr#24 508 and r7,lr,r3,lsr#16 509 ldrb r5,[r10,r5] 510 and r8,lr,r3,lsr#8 511 ldrb r7,[r10,r7] 512 and r9,lr,r3 513 ldrb r8,[r10,r8] 514 orr r5,r5,r7,lsl#24 515 ldrb r9,[r10,r9] 516 orr r5,r5,r8,lsl#16 517 ldr r4,[r6],#4 @ rcon[i++] 518 orr r5,r5,r9,lsl#8 519 eor r5,r5,r4 520 eor r0,r0,r5 @ rk[4]=rk[0]^... 521 eor r1,r1,r0 @ rk[5]=rk[1]^rk[4] 522 str r0,[r11],#16 523 eor r2,r2,r1 @ rk[6]=rk[2]^rk[5] 524 str r1,[r11,#-12] 525 eor r3,r3,r2 @ rk[7]=rk[3]^rk[6] 526 str r2,[r11,#-8] 527 subs r12,r12,#1 528 str r3,[r11,#-4] 529 bne .L128_loop 530 sub r2,r11,#176 531 b .Ldone 532 533 .Lnot128: 534 #if __ARM_ARCH__<7 535 ldrb r8,[r12,#19] 536 ldrb r4,[r12,#18] 537 ldrb r5,[r12,#17] 538 ldrb r6,[r12,#16] 539 orr r8,r8,r4,lsl#8 540 ldrb r9,[r12,#23] 541 orr r8,r8,r5,lsl#16 542 ldrb r4,[r12,#22] 543 orr r8,r8,r6,lsl#24 544 ldrb r5,[r12,#21] 545 ldrb r6,[r12,#20] 546 orr r9,r9,r4,lsl#8 547 orr r9,r9,r5,lsl#16 548 str r8,[r11],#8 549 orr r9,r9,r6,lsl#24 550 str r9,[r11,#-4] 551 #else 552 ldr r8,[r12,#16] 553 ldr r9,[r12,#20] 554 #ifdef __ARMEL__ 555 rev r8,r8 556 rev r9,r9 557 #endif 558 str r8,[r11],#8 559 str r9,[r11,#-4] 560 #endif 561 562 teq lr,#192 563 bne .Lnot192 564 mov r12,#12 565 str r12,[r11,#240-24] 566 add r6,r10,#256 @ rcon 567 mov lr,#255 568 mov r12,#8 569 570 .L192_loop: 571 and r5,lr,r9,lsr#24 572 and r7,lr,r9,lsr#16 573 ldrb r5,[r10,r5] 574 and r8,lr,r9,lsr#8 575 ldrb r7,[r10,r7] 576 and r9,lr,r9 577 ldrb r8,[r10,r8] 578 orr r5,r5,r7,lsl#24 579 ldrb r9,[r10,r9] 580 orr r5,r5,r8,lsl#16 581 ldr r4,[r6],#4 @ rcon[i++] 582 orr r5,r5,r9,lsl#8 583 eor r9,r5,r4 584 eor r0,r0,r9 @ rk[6]=rk[0]^... 585 eor r1,r1,r0 @ rk[7]=rk[1]^rk[6] 586 str r0,[r11],#24 587 eor r2,r2,r1 @ rk[8]=rk[2]^rk[7] 588 str r1,[r11,#-20] 589 eor r3,r3,r2 @ rk[9]=rk[3]^rk[8] 590 str r2,[r11,#-16] 591 subs r12,r12,#1 592 str r3,[r11,#-12] 593 #if __ARM_ARCH__>=7 594 itt eq @ Thumb2 thing, sanity check in ARM 595 #endif 596 subeq r2,r11,#216 597 beq .Ldone 598 599 ldr r7,[r11,#-32] 600 ldr r8,[r11,#-28] 601 eor r7,r7,r3 @ rk[10]=rk[4]^rk[9] 602 eor r9,r8,r7 @ rk[11]=rk[5]^rk[10] 603 str r7,[r11,#-8] 604 str r9,[r11,#-4] 605 b .L192_loop 606 607 .Lnot192: 608 #if __ARM_ARCH__<7 609 ldrb r8,[r12,#27] 610 ldrb r4,[r12,#26] 611 ldrb r5,[r12,#25] 612 ldrb r6,[r12,#24] 613 orr r8,r8,r4,lsl#8 614 ldrb r9,[r12,#31] 615 orr r8,r8,r5,lsl#16 616 ldrb r4,[r12,#30] 617 orr r8,r8,r6,lsl#24 618 ldrb r5,[r12,#29] 619 ldrb r6,[r12,#28] 620 orr r9,r9,r4,lsl#8 621 orr r9,r9,r5,lsl#16 622 str r8,[r11],#8 623 orr r9,r9,r6,lsl#24 624 str r9,[r11,#-4] 625 #else 626 ldr r8,[r12,#24] 627 ldr r9,[r12,#28] 628 #ifdef __ARMEL__ 629 rev r8,r8 630 rev r9,r9 631 #endif 632 str r8,[r11],#8 633 str r9,[r11,#-4] 634 #endif 635 636 mov r12,#14 637 str r12,[r11,#240-32] 638 add r6,r10,#256 @ rcon 639 mov lr,#255 640 mov r12,#7 641 642 .L256_loop: 643 and r5,lr,r9,lsr#24 644 and r7,lr,r9,lsr#16 645 ldrb r5,[r10,r5] 646 and r8,lr,r9,lsr#8 647 ldrb r7,[r10,r7] 648 and r9,lr,r9 649 ldrb r8,[r10,r8] 650 orr r5,r5,r7,lsl#24 651 ldrb r9,[r10,r9] 652 orr r5,r5,r8,lsl#16 653 ldr r4,[r6],#4 @ rcon[i++] 654 orr r5,r5,r9,lsl#8 655 eor r9,r5,r4 656 eor r0,r0,r9 @ rk[8]=rk[0]^... 657 eor r1,r1,r0 @ rk[9]=rk[1]^rk[8] 658 str r0,[r11],#32 659 eor r2,r2,r1 @ rk[10]=rk[2]^rk[9] 660 str r1,[r11,#-28] 661 eor r3,r3,r2 @ rk[11]=rk[3]^rk[10] 662 str r2,[r11,#-24] 663 subs r12,r12,#1 664 str r3,[r11,#-20] 665 #if __ARM_ARCH__>=7 666 itt eq @ Thumb2 thing, sanity check in ARM 667 #endif 668 subeq r2,r11,#256 669 beq .Ldone 670 671 and r5,lr,r3 672 and r7,lr,r3,lsr#8 673 ldrb r5,[r10,r5] 674 and r8,lr,r3,lsr#16 675 ldrb r7,[r10,r7] 676 and r9,lr,r3,lsr#24 677 ldrb r8,[r10,r8] 678 orr r5,r5,r7,lsl#8 679 ldrb r9,[r10,r9] 680 orr r5,r5,r8,lsl#16 681 ldr r4,[r11,#-48] 682 orr r5,r5,r9,lsl#24 683 684 ldr r7,[r11,#-44] 685 ldr r8,[r11,#-40] 686 eor r4,r4,r5 @ rk[12]=rk[4]^... 687 ldr r9,[r11,#-36] 688 eor r7,r7,r4 @ rk[13]=rk[5]^rk[12] 689 str r4,[r11,#-16] 690 eor r8,r8,r7 @ rk[14]=rk[6]^rk[13] 691 str r7,[r11,#-12] 692 eor r9,r9,r8 @ rk[15]=rk[7]^rk[14] 693 str r8,[r11,#-8] 694 str r9,[r11,#-4] 695 b .L256_loop 696 697 .align 2 698 .Ldone: mov r0,#0 699 ldmia sp!,{r4-r12,lr} 700 .Labrt: 701 #if defined(__thumb2__) && __ARM_ARCH__>=7 702 .short 0x4770 @ .word 0xe12fff1e in Thumb2 encoding 703 #else 704 tst lr,#1 705 moveq pc,lr @ be binary compatible with V4, yet 706 .word 0xe12fff1e @ interoperable with Thumb ISA:-) 707 #endif 708 .size asm_AES_set_encrypt_key,.-asm_AES_set_encrypt_key 709 710 .global asm_AES_set_decrypt_key 711 .hidden asm_AES_set_decrypt_key 712 .type asm_AES_set_decrypt_key,%function 713 .align 5 714 asm_AES_set_decrypt_key: 715 str lr,[sp,#-4]! @ push lr 716 bl _armv4_AES_set_encrypt_key 717 teq r0,#0 718 ldr lr,[sp],#4 @ pop lr 719 bne .Labrt 720 721 mov r0,r2 @ asm_AES_set_encrypt_key preserves r2, 722 mov r1,r2 @ which is AES_KEY *key 723 b _armv4_AES_set_enc2dec_key 724 .size asm_AES_set_decrypt_key,.-asm_AES_set_decrypt_key 725 726 @ void AES_set_enc2dec_key(const AES_KEY *inp,AES_KEY *out) 727 .global AES_set_enc2dec_key 728 .hidden AES_set_enc2dec_key 729 .type AES_set_enc2dec_key,%function 730 .align 5 731 AES_set_enc2dec_key: 732 _armv4_AES_set_enc2dec_key: 733 stmdb sp!,{r4-r12,lr} 734 735 ldr r12,[r0,#240] 736 mov r7,r0 @ input 737 add r8,r0,r12,lsl#4 738 mov r11,r1 @ ouput 739 add r10,r1,r12,lsl#4 740 str r12,[r1,#240] 741 742 .Linv: ldr r0,[r7],#16 743 ldr r1,[r7,#-12] 744 ldr r2,[r7,#-8] 745 ldr r3,[r7,#-4] 746 ldr r4,[r8],#-16 747 ldr r5,[r8,#16+4] 748 ldr r6,[r8,#16+8] 749 ldr r9,[r8,#16+12] 750 str r0,[r10],#-16 751 str r1,[r10,#16+4] 752 str r2,[r10,#16+8] 753 str r3,[r10,#16+12] 754 str r4,[r11],#16 755 str r5,[r11,#-12] 756 str r6,[r11,#-8] 757 str r9,[r11,#-4] 758 teq r7,r8 759 bne .Linv 760 761 ldr r0,[r7] 762 ldr r1,[r7,#4] 763 ldr r2,[r7,#8] 764 ldr r3,[r7,#12] 765 str r0,[r11] 766 str r1,[r11,#4] 767 str r2,[r11,#8] 768 str r3,[r11,#12] 769 sub r11,r11,r12,lsl#3 770 ldr r0,[r11,#16]! @ prefetch tp1 771 mov r7,#0x80 772 mov r8,#0x1b 773 orr r7,r7,#0x8000 774 orr r8,r8,#0x1b00 775 orr r7,r7,r7,lsl#16 776 orr r8,r8,r8,lsl#16 777 sub r12,r12,#1 778 mvn r9,r7 779 mov r12,r12,lsl#2 @ (rounds-1)*4 780 781 .Lmix: and r4,r0,r7 782 and r1,r0,r9 783 sub r4,r4,r4,lsr#7 784 and r4,r4,r8 785 eor r1,r4,r1,lsl#1 @ tp2 786 787 and r4,r1,r7 788 and r2,r1,r9 789 sub r4,r4,r4,lsr#7 790 and r4,r4,r8 791 eor r2,r4,r2,lsl#1 @ tp4 792 793 and r4,r2,r7 794 and r3,r2,r9 795 sub r4,r4,r4,lsr#7 796 and r4,r4,r8 797 eor r3,r4,r3,lsl#1 @ tp8 798 799 eor r4,r1,r2 800 eor r5,r0,r3 @ tp9 801 eor r4,r4,r3 @ tpe 802 eor r4,r4,r1,ror#24 803 eor r4,r4,r5,ror#24 @ ^= ROTATE(tpb=tp9^tp2,8) 804 eor r4,r4,r2,ror#16 805 eor r4,r4,r5,ror#16 @ ^= ROTATE(tpd=tp9^tp4,16) 806 eor r4,r4,r5,ror#8 @ ^= ROTATE(tp9,24) 807 808 ldr r0,[r11,#4] @ prefetch tp1 809 str r4,[r11],#4 810 subs r12,r12,#1 811 bne .Lmix 812 813 mov r0,#0 814 #if __ARM_ARCH__>=5 815 ldmia sp!,{r4-r12,pc} 816 #else 817 ldmia sp!,{r4-r12,lr} 818 tst lr,#1 819 moveq pc,lr @ be binary compatible with V4, yet 820 .word 0xe12fff1e @ interoperable with Thumb ISA:-) 821 #endif 822 .size AES_set_enc2dec_key,.-AES_set_enc2dec_key 823 824 .type AES_Td,%object 825 .align 5 826 AES_Td: 827 .word 0x51f4a750, 0x7e416553, 0x1a17a4c3, 0x3a275e96 828 .word 0x3bab6bcb, 0x1f9d45f1, 0xacfa58ab, 0x4be30393 829 .word 0x2030fa55, 0xad766df6, 0x88cc7691, 0xf5024c25 830 .word 0x4fe5d7fc, 0xc52acbd7, 0x26354480, 0xb562a38f 831 .word 0xdeb15a49, 0x25ba1b67, 0x45ea0e98, 0x5dfec0e1 832 .word 0xc32f7502, 0x814cf012, 0x8d4697a3, 0x6bd3f9c6 833 .word 0x038f5fe7, 0x15929c95, 0xbf6d7aeb, 0x955259da 834 .word 0xd4be832d, 0x587421d3, 0x49e06929, 0x8ec9c844 835 .word 0x75c2896a, 0xf48e7978, 0x99583e6b, 0x27b971dd 836 .word 0xbee14fb6, 0xf088ad17, 0xc920ac66, 0x7dce3ab4 837 .word 0x63df4a18, 0xe51a3182, 0x97513360, 0x62537f45 838 .word 0xb16477e0, 0xbb6bae84, 0xfe81a01c, 0xf9082b94 839 .word 0x70486858, 0x8f45fd19, 0x94de6c87, 0x527bf8b7 840 .word 0xab73d323, 0x724b02e2, 0xe31f8f57, 0x6655ab2a 841 .word 0xb2eb2807, 0x2fb5c203, 0x86c57b9a, 0xd33708a5 842 .word 0x302887f2, 0x23bfa5b2, 0x02036aba, 0xed16825c 843 .word 0x8acf1c2b, 0xa779b492, 0xf307f2f0, 0x4e69e2a1 844 .word 0x65daf4cd, 0x0605bed5, 0xd134621f, 0xc4a6fe8a 845 .word 0x342e539d, 0xa2f355a0, 0x058ae132, 0xa4f6eb75 846 .word 0x0b83ec39, 0x4060efaa, 0x5e719f06, 0xbd6e1051 847 .word 0x3e218af9, 0x96dd063d, 0xdd3e05ae, 0x4de6bd46 848 .word 0x91548db5, 0x71c45d05, 0x0406d46f, 0x605015ff 849 .word 0x1998fb24, 0xd6bde997, 0x894043cc, 0x67d99e77 850 .word 0xb0e842bd, 0x07898b88, 0xe7195b38, 0x79c8eedb 851 .word 0xa17c0a47, 0x7c420fe9, 0xf8841ec9, 0x00000000 852 .word 0x09808683, 0x322bed48, 0x1e1170ac, 0x6c5a724e 853 .word 0xfd0efffb, 0x0f853856, 0x3daed51e, 0x362d3927 854 .word 0x0a0fd964, 0x685ca621, 0x9b5b54d1, 0x24362e3a 855 .word 0x0c0a67b1, 0x9357e70f, 0xb4ee96d2, 0x1b9b919e 856 .word 0x80c0c54f, 0x61dc20a2, 0x5a774b69, 0x1c121a16 857 .word 0xe293ba0a, 0xc0a02ae5, 0x3c22e043, 0x121b171d 858 .word 0x0e090d0b, 0xf28bc7ad, 0x2db6a8b9, 0x141ea9c8 859 .word 0x57f11985, 0xaf75074c, 0xee99ddbb, 0xa37f60fd 860 .word 0xf701269f, 0x5c72f5bc, 0x44663bc5, 0x5bfb7e34 861 .word 0x8b432976, 0xcb23c6dc, 0xb6edfc68, 0xb8e4f163 862 .word 0xd731dcca, 0x42638510, 0x13972240, 0x84c61120 863 .word 0x854a247d, 0xd2bb3df8, 0xaef93211, 0xc729a16d 864 .word 0x1d9e2f4b, 0xdcb230f3, 0x0d8652ec, 0x77c1e3d0 865 .word 0x2bb3166c, 0xa970b999, 0x119448fa, 0x47e96422 866 .word 0xa8fc8cc4, 0xa0f03f1a, 0x567d2cd8, 0x223390ef 867 .word 0x87494ec7, 0xd938d1c1, 0x8ccaa2fe, 0x98d40b36 868 .word 0xa6f581cf, 0xa57ade28, 0xdab78e26, 0x3fadbfa4 869 .word 0x2c3a9de4, 0x5078920d, 0x6a5fcc9b, 0x547e4662 870 .word 0xf68d13c2, 0x90d8b8e8, 0x2e39f75e, 0x82c3aff5 871 .word 0x9f5d80be, 0x69d0937c, 0x6fd52da9, 0xcf2512b3 872 .word 0xc8ac993b, 0x10187da7, 0xe89c636e, 0xdb3bbb7b 873 .word 0xcd267809, 0x6e5918f4, 0xec9ab701, 0x834f9aa8 874 .word 0xe6956e65, 0xaaffe67e, 0x21bccf08, 0xef15e8e6 875 .word 0xbae79bd9, 0x4a6f36ce, 0xea9f09d4, 0x29b07cd6 876 .word 0x31a4b2af, 0x2a3f2331, 0xc6a59430, 0x35a266c0 877 .word 0x744ebc37, 0xfc82caa6, 0xe090d0b0, 0x33a7d815 878 .word 0xf104984a, 0x41ecdaf7, 0x7fcd500e, 0x1791f62f 879 .word 0x764dd68d, 0x43efb04d, 0xccaa4d54, 0xe49604df 880 .word 0x9ed1b5e3, 0x4c6a881b, 0xc12c1fb8, 0x4665517f 881 .word 0x9d5eea04, 0x018c355d, 0xfa877473, 0xfb0b412e 882 .word 0xb3671d5a, 0x92dbd252, 0xe9105633, 0x6dd64713 883 .word 0x9ad7618c, 0x37a10c7a, 0x59f8148e, 0xeb133c89 884 .word 0xcea927ee, 0xb761c935, 0xe11ce5ed, 0x7a47b13c 885 .word 0x9cd2df59, 0x55f2733f, 0x1814ce79, 0x73c737bf 886 .word 0x53f7cdea, 0x5ffdaa5b, 0xdf3d6f14, 0x7844db86 887 .word 0xcaaff381, 0xb968c43e, 0x3824342c, 0xc2a3405f 888 .word 0x161dc372, 0xbce2250c, 0x283c498b, 0xff0d9541 889 .word 0x39a80171, 0x080cb3de, 0xd8b4e49c, 0x6456c190 890 .word 0x7bcb8461, 0xd532b670, 0x486c5c74, 0xd0b85742 891 @ Td4[256] 892 .byte 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38 893 .byte 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb 894 .byte 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87 895 .byte 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb 896 .byte 0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d 897 .byte 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e 898 .byte 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2 899 .byte 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25 900 .byte 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16 901 .byte 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92 902 .byte 0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda 903 .byte 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84 904 .byte 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a 905 .byte 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06 906 .byte 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02 907 .byte 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b 908 .byte 0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea 909 .byte 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73 910 .byte 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85 911 .byte 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e 912 .byte 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89 913 .byte 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b 914 .byte 0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20 915 .byte 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4 916 .byte 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31 917 .byte 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f 918 .byte 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d 919 .byte 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef 920 .byte 0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0 921 .byte 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61 922 .byte 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26 923 .byte 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d 924 .size AES_Td,.-AES_Td 925 926 @ void asm_AES_decrypt(const unsigned char *in, unsigned char *out, 927 @ const AES_KEY *key) { 928 .global asm_AES_decrypt 929 .hidden asm_AES_decrypt 930 .type asm_AES_decrypt,%function 931 .align 5 932 asm_AES_decrypt: 933 #if __ARM_ARCH__<7 934 sub r3,pc,#8 @ asm_AES_decrypt 935 #else 936 adr r3,asm_AES_decrypt 937 #endif 938 stmdb sp!,{r1,r4-r12,lr} 939 mov r12,r0 @ inp 940 mov r11,r2 941 sub r10,r3,#asm_AES_decrypt-AES_Td @ Td 942 #if __ARM_ARCH__<7 943 ldrb r0,[r12,#3] @ load input data in endian-neutral 944 ldrb r4,[r12,#2] @ manner... 945 ldrb r5,[r12,#1] 946 ldrb r6,[r12,#0] 947 orr r0,r0,r4,lsl#8 948 ldrb r1,[r12,#7] 949 orr r0,r0,r5,lsl#16 950 ldrb r4,[r12,#6] 951 orr r0,r0,r6,lsl#24 952 ldrb r5,[r12,#5] 953 ldrb r6,[r12,#4] 954 orr r1,r1,r4,lsl#8 955 ldrb r2,[r12,#11] 956 orr r1,r1,r5,lsl#16 957 ldrb r4,[r12,#10] 958 orr r1,r1,r6,lsl#24 959 ldrb r5,[r12,#9] 960 ldrb r6,[r12,#8] 961 orr r2,r2,r4,lsl#8 962 ldrb r3,[r12,#15] 963 orr r2,r2,r5,lsl#16 964 ldrb r4,[r12,#14] 965 orr r2,r2,r6,lsl#24 966 ldrb r5,[r12,#13] 967 ldrb r6,[r12,#12] 968 orr r3,r3,r4,lsl#8 969 orr r3,r3,r5,lsl#16 970 orr r3,r3,r6,lsl#24 971 #else 972 ldr r0,[r12,#0] 973 ldr r1,[r12,#4] 974 ldr r2,[r12,#8] 975 ldr r3,[r12,#12] 976 #ifdef __ARMEL__ 977 rev r0,r0 978 rev r1,r1 979 rev r2,r2 980 rev r3,r3 981 #endif 982 #endif 983 bl _armv4_AES_decrypt 984 985 ldr r12,[sp],#4 @ pop out 986 #if __ARM_ARCH__>=7 987 #ifdef __ARMEL__ 988 rev r0,r0 989 rev r1,r1 990 rev r2,r2 991 rev r3,r3 992 #endif 993 str r0,[r12,#0] 994 str r1,[r12,#4] 995 str r2,[r12,#8] 996 str r3,[r12,#12] 997 #else 998 mov r4,r0,lsr#24 @ write output in endian-neutral 999 mov r5,r0,lsr#16 @ manner... 1000 mov r6,r0,lsr#8 1001 strb r4,[r12,#0] 1002 strb r5,[r12,#1] 1003 mov r4,r1,lsr#24 1004 strb r6,[r12,#2] 1005 mov r5,r1,lsr#16 1006 strb r0,[r12,#3] 1007 mov r6,r1,lsr#8 1008 strb r4,[r12,#4] 1009 strb r5,[r12,#5] 1010 mov r4,r2,lsr#24 1011 strb r6,[r12,#6] 1012 mov r5,r2,lsr#16 1013 strb r1,[r12,#7] 1014 mov r6,r2,lsr#8 1015 strb r4,[r12,#8] 1016 strb r5,[r12,#9] 1017 mov r4,r3,lsr#24 1018 strb r6,[r12,#10] 1019 mov r5,r3,lsr#16 1020 strb r2,[r12,#11] 1021 mov r6,r3,lsr#8 1022 strb r4,[r12,#12] 1023 strb r5,[r12,#13] 1024 strb r6,[r12,#14] 1025 strb r3,[r12,#15] 1026 #endif 1027 #if __ARM_ARCH__>=5 1028 ldmia sp!,{r4-r12,pc} 1029 #else 1030 ldmia sp!,{r4-r12,lr} 1031 tst lr,#1 1032 moveq pc,lr @ be binary compatible with V4, yet 1033 .word 0xe12fff1e @ interoperable with Thumb ISA:-) 1034 #endif 1035 .size asm_AES_decrypt,.-asm_AES_decrypt 1036 1037 .type _armv4_AES_decrypt,%function 1038 .align 2 1039 _armv4_AES_decrypt: 1040 str lr,[sp,#-4]! @ push lr 1041 ldmia r11!,{r4-r7} 1042 eor r0,r0,r4 1043 ldr r12,[r11,#240-16] 1044 eor r1,r1,r5 1045 eor r2,r2,r6 1046 eor r3,r3,r7 1047 sub r12,r12,#1 1048 mov lr,#255 1049 1050 and r7,lr,r0,lsr#16 1051 and r8,lr,r0,lsr#8 1052 and r9,lr,r0 1053 mov r0,r0,lsr#24 1054 .Ldec_loop: 1055 ldr r4,[r10,r7,lsl#2] @ Td1[s0>>16] 1056 and r7,lr,r1 @ i0 1057 ldr r5,[r10,r8,lsl#2] @ Td2[s0>>8] 1058 and r8,lr,r1,lsr#16 1059 ldr r6,[r10,r9,lsl#2] @ Td3[s0>>0] 1060 and r9,lr,r1,lsr#8 1061 ldr r0,[r10,r0,lsl#2] @ Td0[s0>>24] 1062 mov r1,r1,lsr#24 1063 1064 ldr r7,[r10,r7,lsl#2] @ Td3[s1>>0] 1065 ldr r8,[r10,r8,lsl#2] @ Td1[s1>>16] 1066 ldr r9,[r10,r9,lsl#2] @ Td2[s1>>8] 1067 eor r0,r0,r7,ror#24 1068 ldr r1,[r10,r1,lsl#2] @ Td0[s1>>24] 1069 and r7,lr,r2,lsr#8 @ i0 1070 eor r5,r8,r5,ror#8 1071 and r8,lr,r2 @ i1 1072 eor r6,r9,r6,ror#8 1073 and r9,lr,r2,lsr#16 1074 ldr r7,[r10,r7,lsl#2] @ Td2[s2>>8] 1075 eor r1,r1,r4,ror#8 1076 ldr r8,[r10,r8,lsl#2] @ Td3[s2>>0] 1077 mov r2,r2,lsr#24 1078 1079 ldr r9,[r10,r9,lsl#2] @ Td1[s2>>16] 1080 eor r0,r0,r7,ror#16 1081 ldr r2,[r10,r2,lsl#2] @ Td0[s2>>24] 1082 and r7,lr,r3,lsr#16 @ i0 1083 eor r1,r1,r8,ror#24 1084 and r8,lr,r3,lsr#8 @ i1 1085 eor r6,r9,r6,ror#8 1086 and r9,lr,r3 @ i2 1087 ldr r7,[r10,r7,lsl#2] @ Td1[s3>>16] 1088 eor r2,r2,r5,ror#8 1089 ldr r8,[r10,r8,lsl#2] @ Td2[s3>>8] 1090 mov r3,r3,lsr#24 1091 1092 ldr r9,[r10,r9,lsl#2] @ Td3[s3>>0] 1093 eor r0,r0,r7,ror#8 1094 ldr r7,[r11],#16 1095 eor r1,r1,r8,ror#16 1096 ldr r3,[r10,r3,lsl#2] @ Td0[s3>>24] 1097 eor r2,r2,r9,ror#24 1098 1099 ldr r4,[r11,#-12] 1100 eor r0,r0,r7 1101 ldr r5,[r11,#-8] 1102 eor r3,r3,r6,ror#8 1103 ldr r6,[r11,#-4] 1104 and r7,lr,r0,lsr#16 1105 eor r1,r1,r4 1106 and r8,lr,r0,lsr#8 1107 eor r2,r2,r5 1108 and r9,lr,r0 1109 eor r3,r3,r6 1110 mov r0,r0,lsr#24 1111 1112 subs r12,r12,#1 1113 bne .Ldec_loop 1114 1115 add r10,r10,#1024 1116 1117 ldr r5,[r10,#0] @ prefetch Td4 1118 ldr r6,[r10,#32] 1119 ldr r4,[r10,#64] 1120 ldr r5,[r10,#96] 1121 ldr r6,[r10,#128] 1122 ldr r4,[r10,#160] 1123 ldr r5,[r10,#192] 1124 ldr r6,[r10,#224] 1125 1126 ldrb r0,[r10,r0] @ Td4[s0>>24] 1127 ldrb r4,[r10,r7] @ Td4[s0>>16] 1128 and r7,lr,r1 @ i0 1129 ldrb r5,[r10,r8] @ Td4[s0>>8] 1130 and r8,lr,r1,lsr#16 1131 ldrb r6,[r10,r9] @ Td4[s0>>0] 1132 and r9,lr,r1,lsr#8 1133 1134 add r1,r10,r1,lsr#24 1135 ldrb r7,[r10,r7] @ Td4[s1>>0] 1136 ldrb r1,[r1] @ Td4[s1>>24] 1137 ldrb r8,[r10,r8] @ Td4[s1>>16] 1138 eor r0,r7,r0,lsl#24 1139 ldrb r9,[r10,r9] @ Td4[s1>>8] 1140 eor r1,r4,r1,lsl#8 1141 and r7,lr,r2,lsr#8 @ i0 1142 eor r5,r5,r8,lsl#8 1143 and r8,lr,r2 @ i1 1144 ldrb r7,[r10,r7] @ Td4[s2>>8] 1145 eor r6,r6,r9,lsl#8 1146 ldrb r8,[r10,r8] @ Td4[s2>>0] 1147 and r9,lr,r2,lsr#16 1148 1149 add r2,r10,r2,lsr#24 1150 ldrb r2,[r2] @ Td4[s2>>24] 1151 eor r0,r0,r7,lsl#8 1152 ldrb r9,[r10,r9] @ Td4[s2>>16] 1153 eor r1,r8,r1,lsl#16 1154 and r7,lr,r3,lsr#16 @ i0 1155 eor r2,r5,r2,lsl#16 1156 and r8,lr,r3,lsr#8 @ i1 1157 ldrb r7,[r10,r7] @ Td4[s3>>16] 1158 eor r6,r6,r9,lsl#16 1159 ldrb r8,[r10,r8] @ Td4[s3>>8] 1160 and r9,lr,r3 @ i2 1161 1162 add r3,r10,r3,lsr#24 1163 ldrb r9,[r10,r9] @ Td4[s3>>0] 1164 ldrb r3,[r3] @ Td4[s3>>24] 1165 eor r0,r0,r7,lsl#16 1166 ldr r7,[r11,#0] 1167 eor r1,r1,r8,lsl#8 1168 ldr r4,[r11,#4] 1169 eor r2,r9,r2,lsl#8 1170 ldr r5,[r11,#8] 1171 eor r3,r6,r3,lsl#24 1172 ldr r6,[r11,#12] 1173 1174 eor r0,r0,r7 1175 eor r1,r1,r4 1176 eor r2,r2,r5 1177 eor r3,r3,r6 1178 1179 sub r10,r10,#1024 1180 ldr pc,[sp],#4 @ pop and return 1181 .size _armv4_AES_decrypt,.-_armv4_AES_decrypt 1182 .asciz "AES for ARMv4, CRYPTOGAMS by <appro (at) openssl.org>" 1183 .align 2 1184 1185 #endif 1186
