lib/libcrypto/aes/asm/aes-armv4.pl

   1 #!/usr/bin/env perl
   2
   3 # ====================================================================
   4 # Written by Andy Polyakov <appro@fy.chalmers.se> for the OpenSSL
   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/.
   8 # ====================================================================
   9
  10 # AES for ARMv4
  11
  12 # January 2007.
  13 #
  14 # Code uses single 1K S-box and is >2 times faster than code generated
  15 # by gcc-3.4.1. This is thanks to unique feature of ARMv4 ISA, which
  16 # allows to merge logical or arithmetic operation with shift or rotate
  17 # in one instruction and emit combined result every cycle. The module
  18 # is endian-neutral. The performance is ~42 cycles/byte for 128-bit
  19 # key [on single-issue Xscale PXA250 core].
  20
  21 # May 2007.
  22 #
  23 # AES_set_[en|de]crypt_key is added.
  24
  25 # July 2010.
  26 #
  27 # Rescheduling for dual-issue pipeline resulted in 12% improvement on
  28 # Cortex A8 core and ~25 cycles per byte processed with 128-bit key.
  29
  30 # February 2011.
  31 #
  32 # Profiler-assisted and platform-specific optimization resulted in 16%
  33 # improvement on Cortex A8 core and ~21.5 cycles per byte.
  34
  35 while (($output=shift) && ($output!~/^\w[\w\-]*\.\w+$/)) {}
  36 open STDOUT,">$output";
  37
  38 $s0="r0";
  39 $s1="r1";
  40 $s2="r2";
  41 $s3="r3";
  42 $t1="r4";
  43 $t2="r5";
  44 $t3="r6";
  45 $i1="r7";
  46 $i2="r8";
  47 $i3="r9";
  48
  49 $tbl="r10";
  50 $key="r11";
  51 $rounds="r12";
  52
  53 $code=<<___;
  54 #include "arm_arch.h"
  55 .text
  56 .code   32
  57
  58 .type   AES_Te,%object
  59 .align  5
  60 AES_Te:
  61 .word   0xc66363a5, 0xf87c7c84, 0xee777799, 0xf67b7b8d
  62 .word   0xfff2f20d, 0xd66b6bbd, 0xde6f6fb1, 0x91c5c554
  63 .word   0x60303050, 0x02010103, 0xce6767a9, 0x562b2b7d
  64 .word   0xe7fefe19, 0xb5d7d762, 0x4dababe6, 0xec76769a
  65 .word   0x8fcaca45, 0x1f82829d, 0x89c9c940, 0xfa7d7d87
  66 .word   0xeffafa15, 0xb25959eb, 0x8e4747c9, 0xfbf0f00b
  67 .word   0x41adadec, 0xb3d4d467, 0x5fa2a2fd, 0x45afafea
  68 .word   0x239c9cbf, 0x53a4a4f7, 0xe4727296, 0x9bc0c05b
  69 .word   0x75b7b7c2, 0xe1fdfd1c, 0x3d9393ae, 0x4c26266a
  70 .word   0x6c36365a, 0x7e3f3f41, 0xf5f7f702, 0x83cccc4f
  71 .word   0x6834345c, 0x51a5a5f4, 0xd1e5e534, 0xf9f1f108
  72 .word   0xe2717193, 0xabd8d873, 0x62313153, 0x2a15153f
  73 .word   0x0804040c, 0x95c7c752, 0x46232365, 0x9dc3c35e
  74 .word   0x30181828, 0x379696a1, 0x0a05050f, 0x2f9a9ab5
  75 .word   0x0e070709, 0x24121236, 0x1b80809b, 0xdfe2e23d
  76 .word   0xcdebeb26, 0x4e272769, 0x7fb2b2cd, 0xea75759f
  77 .word   0x1209091b, 0x1d83839e, 0x582c2c74, 0x341a1a2e
  78 .word   0x361b1b2d, 0xdc6e6eb2, 0xb45a5aee, 0x5ba0a0fb
  79 .word   0xa45252f6, 0x763b3b4d, 0xb7d6d661, 0x7db3b3ce
  80 .word   0x5229297b, 0xdde3e33e, 0x5e2f2f71, 0x13848497
  81 .word   0xa65353f5, 0xb9d1d168, 0x00000000, 0xc1eded2c
  82 .word   0x40202060, 0xe3fcfc1f, 0x79b1b1c8, 0xb65b5bed
  83 .word   0xd46a6abe, 0x8dcbcb46, 0x67bebed9, 0x7239394b
  84 .word   0x944a4ade, 0x984c4cd4, 0xb05858e8, 0x85cfcf4a
  85 .word   0xbbd0d06b, 0xc5efef2a, 0x4faaaae5, 0xedfbfb16
  86 .word   0x864343c5, 0x9a4d4dd7, 0x66333355, 0x11858594
  87 .word   0x8a4545cf, 0xe9f9f910, 0x04020206, 0xfe7f7f81
  88 .word   0xa05050f0, 0x783c3c44, 0x259f9fba, 0x4ba8a8e3
  89 .word   0xa25151f3, 0x5da3a3fe, 0x804040c0, 0x058f8f8a
  90 .word   0x3f9292ad, 0x219d9dbc, 0x70383848, 0xf1f5f504
  91 .word   0x63bcbcdf, 0x77b6b6c1, 0xafdada75, 0x42212163
  92 .word   0x20101030, 0xe5ffff1a, 0xfdf3f30e, 0xbfd2d26d
  93 .word   0x81cdcd4c, 0x180c0c14, 0x26131335, 0xc3ecec2f
  94 .word   0xbe5f5fe1, 0x359797a2, 0x884444cc, 0x2e171739
  95 .word   0x93c4c457, 0x55a7a7f2, 0xfc7e7e82, 0x7a3d3d47
  96 .word   0xc86464ac, 0xba5d5de7, 0x3219192b, 0xe6737395
  97 .word   0xc06060a0, 0x19818198, 0x9e4f4fd1, 0xa3dcdc7f
  98 .word   0x44222266, 0x542a2a7e, 0x3b9090ab, 0x0b888883
  99 .word   0x8c4646ca, 0xc7eeee29, 0x6bb8b8d3, 0x2814143c
 100 .word   0xa7dede79, 0xbc5e5ee2, 0x160b0b1d, 0xaddbdb76
 101 .word   0xdbe0e03b, 0x64323256, 0x743a3a4e, 0x140a0a1e
 102 .word   0x924949db, 0x0c06060a, 0x4824246c, 0xb85c5ce4
 103 .word   0x9fc2c25d, 0xbdd3d36e, 0x43acacef, 0xc46262a6
 104 .word   0x399191a8, 0x319595a4, 0xd3e4e437, 0xf279798b
 105 .word   0xd5e7e732, 0x8bc8c843, 0x6e373759, 0xda6d6db7
 106 .word   0x018d8d8c, 0xb1d5d564, 0x9c4e4ed2, 0x49a9a9e0
 107 .word   0xd86c6cb4, 0xac5656fa, 0xf3f4f407, 0xcfeaea25
 108 .word   0xca6565af, 0xf47a7a8e, 0x47aeaee9, 0x10080818
 109 .word   0x6fbabad5, 0xf0787888, 0x4a25256f, 0x5c2e2e72
 110 .word   0x381c1c24, 0x57a6a6f1, 0x73b4b4c7, 0x97c6c651
 111 .word   0xcbe8e823, 0xa1dddd7c, 0xe874749c, 0x3e1f1f21
 112 .word   0x964b4bdd, 0x61bdbddc, 0x0d8b8b86, 0x0f8a8a85
 113 .word   0xe0707090, 0x7c3e3e42, 0x71b5b5c4, 0xcc6666aa
 114 .word   0x904848d8, 0x06030305, 0xf7f6f601, 0x1c0e0e12
 115 .word   0xc26161a3, 0x6a35355f, 0xae5757f9, 0x69b9b9d0
 116 .word   0x17868691, 0x99c1c158, 0x3a1d1d27, 0x279e9eb9
 117 .word   0xd9e1e138, 0xebf8f813, 0x2b9898b3, 0x22111133
 118 .word   0xd26969bb, 0xa9d9d970, 0x078e8e89, 0x339494a7
 119 .word   0x2d9b9bb6, 0x3c1e1e22, 0x15878792, 0xc9e9e920
 120 .word   0x87cece49, 0xaa5555ff, 0x50282878, 0xa5dfdf7a
 121 .word   0x038c8c8f, 0x59a1a1f8, 0x09898980, 0x1a0d0d17
 122 .word   0x65bfbfda, 0xd7e6e631, 0x844242c6, 0xd06868b8
 123 .word   0x824141c3, 0x299999b0, 0x5a2d2d77, 0x1e0f0f11
 124 .word   0x7bb0b0cb, 0xa85454fc, 0x6dbbbbd6, 0x2c16163a
 125 @ Te4[256]
 126 .byte   0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5
 127 .byte   0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76
 128 .byte   0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0
 129 .byte   0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0
 130 .byte   0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc
 131 .byte   0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15
 132 .byte   0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a
 133 .byte   0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75
 134 .byte   0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0
 135 .byte   0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84
 136 .byte   0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b
 137 .byte   0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf
 138 .byte   0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85
 139 .byte   0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8
 140 .byte   0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5
 141 .byte   0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2
 142 .byte   0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17
 143 .byte   0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73
 144 .byte   0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88
 145 .byte   0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb
 146 .byte   0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c
 147 .byte   0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79
 148 .byte   0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9
 149 .byte   0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08
 150 .byte   0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6
 151 .byte   0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a
 152 .byte   0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e
 153 .byte   0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e
 154 .byte   0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94
 155 .byte   0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf
 156 .byte   0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68
 157 .byte   0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16
 158 @ rcon[]
 159 .word   0x01000000, 0x02000000, 0x04000000, 0x08000000
 160 .word   0x10000000, 0x20000000, 0x40000000, 0x80000000
 161 .word   0x1B000000, 0x36000000, 0, 0, 0, 0, 0, 0
 162 .size   AES_Te,.-AES_Te
 163
 164 @ void AES_encrypt(const unsigned char *in, unsigned char *out,
 165 @                const AES_KEY *key) {
 166 .global AES_encrypt
 167 .type   AES_encrypt,%function
 168 .align  5
 169 AES_encrypt:
 170         sub     r3,pc,#8                @ AES_encrypt
 171         stmdb   sp!,{r1,r4-r12,lr}
 172         mov     $rounds,r0              @ inp
 173         mov     $key,r2
 174         sub     $tbl,r3,#AES_encrypt-AES_Te     @ Te
 175 #if __ARM_ARCH__<7 || defined(__STRICT_ALIGNMENT)
 176         ldrb    $s0,[$rounds,#3]        @ load input data in endian-neutral
 177         ldrb    $t1,[$rounds,#2]        @ manner...
 178         ldrb    $t2,[$rounds,#1]
 179         ldrb    $t3,[$rounds,#0]
 180         orr     $s0,$s0,$t1,lsl#8
 181         ldrb    $s1,[$rounds,#7]
 182         orr     $s0,$s0,$t2,lsl#16
 183         ldrb    $t1,[$rounds,#6]
 184         orr     $s0,$s0,$t3,lsl#24
 185         ldrb    $t2,[$rounds,#5]
 186         ldrb    $t3,[$rounds,#4]
 187         orr     $s1,$s1,$t1,lsl#8
 188         ldrb    $s2,[$rounds,#11]
 189         orr     $s1,$s1,$t2,lsl#16
 190         ldrb    $t1,[$rounds,#10]
 191         orr     $s1,$s1,$t3,lsl#24
 192         ldrb    $t2,[$rounds,#9]
 193         ldrb    $t3,[$rounds,#8]
 194         orr     $s2,$s2,$t1,lsl#8
 195         ldrb    $s3,[$rounds,#15]
 196         orr     $s2,$s2,$t2,lsl#16
 197         ldrb    $t1,[$rounds,#14]
 198         orr     $s2,$s2,$t3,lsl#24
 199         ldrb    $t2,[$rounds,#13]
 200         ldrb    $t3,[$rounds,#12]
 201         orr     $s3,$s3,$t1,lsl#8
 202         orr     $s3,$s3,$t2,lsl#16
 203         orr     $s3,$s3,$t3,lsl#24
 204 #else
 205         ldr     $s0,[$rounds,#0]
 206         ldr     $s1,[$rounds,#4]
 207         ldr     $s2,[$rounds,#8]
 208         ldr     $s3,[$rounds,#12]
 209 #ifdef __ARMEL__
 210         rev     $s0,$s0
 211         rev     $s1,$s1
 212         rev     $s2,$s2
 213         rev     $s3,$s3
 214 #endif
 215 #endif
 216         bl      _armv4_AES_encrypt
 217
 218         ldr     $rounds,[sp],#4         @ pop out
 219 #if __ARM_ARCH__>=7 && !defined(__STRICT_ALIGNMENT)
 220 #ifdef __ARMEL__
 221         rev     $s0,$s0
 222         rev     $s1,$s1
 223         rev     $s2,$s2
 224         rev     $s3,$s3
 225 #endif
 226         str     $s0,[$rounds,#0]
 227         str     $s1,[$rounds,#4]
 228         str     $s2,[$rounds,#8]
 229         str     $s3,[$rounds,#12]
 230 #else
 231         mov     $t1,$s0,lsr#24          @ write output in endian-neutral
 232         mov     $t2,$s0,lsr#16          @ manner...
 233         mov     $t3,$s0,lsr#8
 234         strb    $t1,[$rounds,#0]
 235         strb    $t2,[$rounds,#1]
 236         mov     $t1,$s1,lsr#24
 237         strb    $t3,[$rounds,#2]
 238         mov     $t2,$s1,lsr#16
 239         strb    $s0,[$rounds,#3]
 240         mov     $t3,$s1,lsr#8
 241         strb    $t1,[$rounds,#4]
 242         strb    $t2,[$rounds,#5]
 243         mov     $t1,$s2,lsr#24
 244         strb    $t3,[$rounds,#6]
 245         mov     $t2,$s2,lsr#16
 246         strb    $s1,[$rounds,#7]
 247         mov     $t3,$s2,lsr#8
 248         strb    $t1,[$rounds,#8]
 249         strb    $t2,[$rounds,#9]
 250         mov     $t1,$s3,lsr#24
 251         strb    $t3,[$rounds,#10]
 252         mov     $t2,$s3,lsr#16
 253         strb    $s2,[$rounds,#11]
 254         mov     $t3,$s3,lsr#8
 255         strb    $t1,[$rounds,#12]
 256         strb    $t2,[$rounds,#13]
 257         strb    $t3,[$rounds,#14]
 258         strb    $s3,[$rounds,#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         bx      lr                      @ interoperable with Thumb ISA:-)
 267 #endif
 268 .size   AES_encrypt,.-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   $key!,{$t1-$i1}
 275         eor     $s0,$s0,$t1
 276         ldr     $rounds,[$key,#240-16]
 277         eor     $s1,$s1,$t2
 278         eor     $s2,$s2,$t3
 279         eor     $s3,$s3,$i1
 280         sub     $rounds,$rounds,#1
 281         mov     lr,#255
 282
 283         and     $i1,lr,$s0
 284         and     $i2,lr,$s0,lsr#8
 285         and     $i3,lr,$s0,lsr#16
 286         mov     $s0,$s0,lsr#24
 287 .Lenc_loop:
 288         ldr     $t1,[$tbl,$i1,lsl#2]    @ Te3[s0>>0]
 289         and     $i1,lr,$s1,lsr#16       @ i0
 290         ldr     $t2,[$tbl,$i2,lsl#2]    @ Te2[s0>>8]
 291         and     $i2,lr,$s1
 292         ldr     $t3,[$tbl,$i3,lsl#2]    @ Te1[s0>>16]
 293         and     $i3,lr,$s1,lsr#8
 294         ldr     $s0,[$tbl,$s0,lsl#2]    @ Te0[s0>>24]
 295         mov     $s1,$s1,lsr#24
 296
 297         ldr     $i1,[$tbl,$i1,lsl#2]    @ Te1[s1>>16]
 298         ldr     $i2,[$tbl,$i2,lsl#2]    @ Te3[s1>>0]
 299         ldr     $i3,[$tbl,$i3,lsl#2]    @ Te2[s1>>8]
 300         eor     $s0,$s0,$i1,ror#8
 301         ldr     $s1,[$tbl,$s1,lsl#2]    @ Te0[s1>>24]
 302         and     $i1,lr,$s2,lsr#8        @ i0
 303         eor     $t2,$t2,$i2,ror#8
 304         and     $i2,lr,$s2,lsr#16       @ i1
 305         eor     $t3,$t3,$i3,ror#8
 306         and     $i3,lr,$s2
 307         ldr     $i1,[$tbl,$i1,lsl#2]    @ Te2[s2>>8]
 308         eor     $s1,$s1,$t1,ror#24
 309         ldr     $i2,[$tbl,$i2,lsl#2]    @ Te1[s2>>16]
 310         mov     $s2,$s2,lsr#24
 311
 312         ldr     $i3,[$tbl,$i3,lsl#2]    @ Te3[s2>>0]
 313         eor     $s0,$s0,$i1,ror#16
 314         ldr     $s2,[$tbl,$s2,lsl#2]    @ Te0[s2>>24]
 315         and     $i1,lr,$s3              @ i0
 316         eor     $s1,$s1,$i2,ror#8
 317         and     $i2,lr,$s3,lsr#8        @ i1
 318         eor     $t3,$t3,$i3,ror#16
 319         and     $i3,lr,$s3,lsr#16       @ i2
 320         ldr     $i1,[$tbl,$i1,lsl#2]    @ Te3[s3>>0]
 321         eor     $s2,$s2,$t2,ror#16
 322         ldr     $i2,[$tbl,$i2,lsl#2]    @ Te2[s3>>8]
 323         mov     $s3,$s3,lsr#24
 324
 325         ldr     $i3,[$tbl,$i3,lsl#2]    @ Te1[s3>>16]
 326         eor     $s0,$s0,$i1,ror#24
 327         ldr     $i1,[$key],#16
 328         eor     $s1,$s1,$i2,ror#16
 329         ldr     $s3,[$tbl,$s3,lsl#2]    @ Te0[s3>>24]
 330         eor     $s2,$s2,$i3,ror#8
 331         ldr     $t1,[$key,#-12]
 332         eor     $s3,$s3,$t3,ror#8
 333
 334         ldr     $t2,[$key,#-8]
 335         eor     $s0,$s0,$i1
 336         ldr     $t3,[$key,#-4]
 337         and     $i1,lr,$s0
 338         eor     $s1,$s1,$t1
 339         and     $i2,lr,$s0,lsr#8
 340         eor     $s2,$s2,$t2
 341         and     $i3,lr,$s0,lsr#16
 342         eor     $s3,$s3,$t3
 343         mov     $s0,$s0,lsr#24
 344
 345         subs    $rounds,$rounds,#1
 346         bne     .Lenc_loop
 347
 348         add     $tbl,$tbl,#2
 349
 350         ldrb    $t1,[$tbl,$i1,lsl#2]    @ Te4[s0>>0]
 351         and     $i1,lr,$s1,lsr#16       @ i0
 352         ldrb    $t2,[$tbl,$i2,lsl#2]    @ Te4[s0>>8]
 353         and     $i2,lr,$s1
 354         ldrb    $t3,[$tbl,$i3,lsl#2]    @ Te4[s0>>16]
 355         and     $i3,lr,$s1,lsr#8
 356         ldrb    $s0,[$tbl,$s0,lsl#2]    @ Te4[s0>>24]
 357         mov     $s1,$s1,lsr#24
 358
 359         ldrb    $i1,[$tbl,$i1,lsl#2]    @ Te4[s1>>16]
 360         ldrb    $i2,[$tbl,$i2,lsl#2]    @ Te4[s1>>0]
 361         ldrb    $i3,[$tbl,$i3,lsl#2]    @ Te4[s1>>8]
 362         eor     $s0,$i1,$s0,lsl#8
 363         ldrb    $s1,[$tbl,$s1,lsl#2]    @ Te4[s1>>24]
 364         and     $i1,lr,$s2,lsr#8        @ i0
 365         eor     $t2,$i2,$t2,lsl#8
 366         and     $i2,lr,$s2,lsr#16       @ i1
 367         eor     $t3,$i3,$t3,lsl#8
 368         and     $i3,lr,$s2
 369         ldrb    $i1,[$tbl,$i1,lsl#2]    @ Te4[s2>>8]
 370         eor     $s1,$t1,$s1,lsl#24
 371         ldrb    $i2,[$tbl,$i2,lsl#2]    @ Te4[s2>>16]
 372         mov     $s2,$s2,lsr#24
 373
 374         ldrb    $i3,[$tbl,$i3,lsl#2]    @ Te4[s2>>0]
 375         eor     $s0,$i1,$s0,lsl#8
 376         ldrb    $s2,[$tbl,$s2,lsl#2]    @ Te4[s2>>24]
 377         and     $i1,lr,$s3              @ i0
 378         eor     $s1,$s1,$i2,lsl#16
 379         and     $i2,lr,$s3,lsr#8        @ i1
 380         eor     $t3,$i3,$t3,lsl#8
 381         and     $i3,lr,$s3,lsr#16       @ i2
 382         ldrb    $i1,[$tbl,$i1,lsl#2]    @ Te4[s3>>0]
 383         eor     $s2,$t2,$s2,lsl#24
 384         ldrb    $i2,[$tbl,$i2,lsl#2]    @ Te4[s3>>8]
 385         mov     $s3,$s3,lsr#24
 386
 387         ldrb    $i3,[$tbl,$i3,lsl#2]    @ Te4[s3>>16]
 388         eor     $s0,$i1,$s0,lsl#8
 389         ldr     $i1,[$key,#0]
 390         ldrb    $s3,[$tbl,$s3,lsl#2]    @ Te4[s3>>24]
 391         eor     $s1,$s1,$i2,lsl#8
 392         ldr     $t1,[$key,#4]
 393         eor     $s2,$s2,$i3,lsl#16
 394         ldr     $t2,[$key,#8]
 395         eor     $s3,$t3,$s3,lsl#24
 396         ldr     $t3,[$key,#12]
 397
 398         eor     $s0,$s0,$i1
 399         eor     $s1,$s1,$t1
 400         eor     $s2,$s2,$t2
 401         eor     $s3,$s3,$t3
 402
 403         sub     $tbl,$tbl,#2
 404         ldr     pc,[sp],#4              @ pop and return
 405 .size   _armv4_AES_encrypt,.-_armv4_AES_encrypt
 406
 407 .global AES_set_encrypt_key
 408 .type   AES_set_encrypt_key,%function
 409 .align  5
 410 AES_set_encrypt_key:
 411 _armv4_AES_set_encrypt_key:
 412         sub     r3,pc,#8                @ AES_set_encrypt_key
 413         teq     r0,#0
 414         moveq   r0,#-1
 415         beq     .Labrt
 416         teq     r2,#0
 417         moveq   r0,#-1
 418         beq     .Labrt
 419
 420         teq     r1,#128
 421         beq     .Lok
 422         teq     r1,#192
 423         beq     .Lok
 424         teq     r1,#256
 425         movne   r0,#-1
 426         bne     .Labrt
 427
 428 .Lok:   stmdb   sp!,{r4-r12,lr}
 429         sub     $tbl,r3,#_armv4_AES_set_encrypt_key-AES_Te-1024 @ Te4
 430
 431         mov     $rounds,r0              @ inp
 432         mov     lr,r1                   @ bits
 433         mov     $key,r2                 @ key
 434
 435 #if __ARM_ARCH__<7 || defined(__STRICT_ALIGNMENT)
 436         ldrb    $s0,[$rounds,#3]        @ load input data in endian-neutral
 437         ldrb    $t1,[$rounds,#2]        @ manner...
 438         ldrb    $t2,[$rounds,#1]
 439         ldrb    $t3,[$rounds,#0]
 440         orr     $s0,$s0,$t1,lsl#8
 441         ldrb    $s1,[$rounds,#7]
 442         orr     $s0,$s0,$t2,lsl#16
 443         ldrb    $t1,[$rounds,#6]
 444         orr     $s0,$s0,$t3,lsl#24
 445         ldrb    $t2,[$rounds,#5]
 446         ldrb    $t3,[$rounds,#4]
 447         orr     $s1,$s1,$t1,lsl#8
 448         ldrb    $s2,[$rounds,#11]
 449         orr     $s1,$s1,$t2,lsl#16
 450         ldrb    $t1,[$rounds,#10]
 451         orr     $s1,$s1,$t3,lsl#24
 452         ldrb    $t2,[$rounds,#9]
 453         ldrb    $t3,[$rounds,#8]
 454         orr     $s2,$s2,$t1,lsl#8
 455         ldrb    $s3,[$rounds,#15]
 456         orr     $s2,$s2,$t2,lsl#16
 457         ldrb    $t1,[$rounds,#14]
 458         orr     $s2,$s2,$t3,lsl#24
 459         ldrb    $t2,[$rounds,#13]
 460         ldrb    $t3,[$rounds,#12]
 461         orr     $s3,$s3,$t1,lsl#8
 462         str     $s0,[$key],#16
 463         orr     $s3,$s3,$t2,lsl#16
 464         str     $s1,[$key,#-12]
 465         orr     $s3,$s3,$t3,lsl#24
 466         str     $s2,[$key,#-8]
 467         str     $s3,[$key,#-4]
 468 #else
 469         ldr     $s0,[$rounds,#0]
 470         ldr     $s1,[$rounds,#4]
 471         ldr     $s2,[$rounds,#8]
 472         ldr     $s3,[$rounds,#12]
 473 #ifdef __ARMEL__
 474         rev     $s0,$s0
 475         rev     $s1,$s1
 476         rev     $s2,$s2
 477         rev     $s3,$s3
 478 #endif
 479         str     $s0,[$key],#16
 480         str     $s1,[$key,#-12]
 481         str     $s2,[$key,#-8]
 482         str     $s3,[$key,#-4]
 483 #endif
 484
 485         teq     lr,#128
 486         bne     .Lnot128
 487         mov     $rounds,#10
 488         str     $rounds,[$key,#240-16]
 489         add     $t3,$tbl,#256                   @ rcon
 490         mov     lr,#255
 491
 492 .L128_loop:
 493         and     $t2,lr,$s3,lsr#24
 494         and     $i1,lr,$s3,lsr#16
 495         ldrb    $t2,[$tbl,$t2]
 496         and     $i2,lr,$s3,lsr#8
 497         ldrb    $i1,[$tbl,$i1]
 498         and     $i3,lr,$s3
 499         ldrb    $i2,[$tbl,$i2]
 500         orr     $t2,$t2,$i1,lsl#24
 501         ldrb    $i3,[$tbl,$i3]
 502         orr     $t2,$t2,$i2,lsl#16
 503         ldr     $t1,[$t3],#4                    @ rcon[i++]
 504         orr     $t2,$t2,$i3,lsl#8
 505         eor     $t2,$t2,$t1
 506         eor     $s0,$s0,$t2                     @ rk[4]=rk[0]^...
 507         eor     $s1,$s1,$s0                     @ rk[5]=rk[1]^rk[4]
 508         str     $s0,[$key],#16
 509         eor     $s2,$s2,$s1                     @ rk[6]=rk[2]^rk[5]
 510         str     $s1,[$key,#-12]
 511         eor     $s3,$s3,$s2                     @ rk[7]=rk[3]^rk[6]
 512         str     $s2,[$key,#-8]
 513         subs    $rounds,$rounds,#1
 514         str     $s3,[$key,#-4]
 515         bne     .L128_loop
 516         sub     r2,$key,#176
 517         b       .Ldone
 518
 519 .Lnot128:
 520 #if __ARM_ARCH__<7 || defined(__STRICT_ALIGNMENT)
 521         ldrb    $i2,[$rounds,#19]
 522         ldrb    $t1,[$rounds,#18]
 523         ldrb    $t2,[$rounds,#17]
 524         ldrb    $t3,[$rounds,#16]
 525         orr     $i2,$i2,$t1,lsl#8
 526         ldrb    $i3,[$rounds,#23]
 527         orr     $i2,$i2,$t2,lsl#16
 528         ldrb    $t1,[$rounds,#22]
 529         orr     $i2,$i2,$t3,lsl#24
 530         ldrb    $t2,[$rounds,#21]
 531         ldrb    $t3,[$rounds,#20]
 532         orr     $i3,$i3,$t1,lsl#8
 533         orr     $i3,$i3,$t2,lsl#16
 534         str     $i2,[$key],#8
 535         orr     $i3,$i3,$t3,lsl#24
 536         str     $i3,[$key,#-4]
 537 #else
 538         ldr     $i2,[$rounds,#16]
 539         ldr     $i3,[$rounds,#20]
 540 #ifdef __ARMEL__
 541         rev     $i2,$i2
 542         rev     $i3,$i3
 543 #endif
 544         str     $i2,[$key],#8
 545         str     $i3,[$key,#-4]
 546 #endif
 547
 548         teq     lr,#192
 549         bne     .Lnot192
 550         mov     $rounds,#12
 551         str     $rounds,[$key,#240-24]
 552         add     $t3,$tbl,#256                   @ rcon
 553         mov     lr,#255
 554         mov     $rounds,#8
 555
 556 .L192_loop:
 557         and     $t2,lr,$i3,lsr#24
 558         and     $i1,lr,$i3,lsr#16
 559         ldrb    $t2,[$tbl,$t2]
 560         and     $i2,lr,$i3,lsr#8
 561         ldrb    $i1,[$tbl,$i1]
 562         and     $i3,lr,$i3
 563         ldrb    $i2,[$tbl,$i2]
 564         orr     $t2,$t2,$i1,lsl#24
 565         ldrb    $i3,[$tbl,$i3]
 566         orr     $t2,$t2,$i2,lsl#16
 567         ldr     $t1,[$t3],#4                    @ rcon[i++]
 568         orr     $t2,$t2,$i3,lsl#8
 569         eor     $i3,$t2,$t1
 570         eor     $s0,$s0,$i3                     @ rk[6]=rk[0]^...
 571         eor     $s1,$s1,$s0                     @ rk[7]=rk[1]^rk[6]
 572         str     $s0,[$key],#24
 573         eor     $s2,$s2,$s1                     @ rk[8]=rk[2]^rk[7]
 574         str     $s1,[$key,#-20]
 575         eor     $s3,$s3,$s2                     @ rk[9]=rk[3]^rk[8]
 576         str     $s2,[$key,#-16]
 577         subs    $rounds,$rounds,#1
 578         str     $s3,[$key,#-12]
 579         subeq   r2,$key,#216
 580         beq     .Ldone
 581
 582         ldr     $i1,[$key,#-32]
 583         ldr     $i2,[$key,#-28]
 584         eor     $i1,$i1,$s3                     @ rk[10]=rk[4]^rk[9]
 585         eor     $i3,$i2,$i1                     @ rk[11]=rk[5]^rk[10]
 586         str     $i1,[$key,#-8]
 587         str     $i3,[$key,#-4]
 588         b       .L192_loop
 589
 590 .Lnot192:
 591 #if __ARM_ARCH__<7 || defined(__STRICT_ALIGNMENT)
 592         ldrb    $i2,[$rounds,#27]
 593         ldrb    $t1,[$rounds,#26]
 594         ldrb    $t2,[$rounds,#25]
 595         ldrb    $t3,[$rounds,#24]
 596         orr     $i2,$i2,$t1,lsl#8
 597         ldrb    $i3,[$rounds,#31]
 598         orr     $i2,$i2,$t2,lsl#16
 599         ldrb    $t1,[$rounds,#30]
 600         orr     $i2,$i2,$t3,lsl#24
 601         ldrb    $t2,[$rounds,#29]
 602         ldrb    $t3,[$rounds,#28]
 603         orr     $i3,$i3,$t1,lsl#8
 604         orr     $i3,$i3,$t2,lsl#16
 605         str     $i2,[$key],#8
 606         orr     $i3,$i3,$t3,lsl#24
 607         str     $i3,[$key,#-4]
 608 #else
 609         ldr     $i2,[$rounds,#24]
 610         ldr     $i3,[$rounds,#28]
 611 #ifdef __ARMEL__
 612         rev     $i2,$i2
 613         rev     $i3,$i3
 614 #endif
 615         str     $i2,[$key],#8
 616         str     $i3,[$key,#-4]
 617 #endif
 618
 619         mov     $rounds,#14
 620         str     $rounds,[$key,#240-32]
 621         add     $t3,$tbl,#256                   @ rcon
 622         mov     lr,#255
 623         mov     $rounds,#7
 624
 625 .L256_loop:
 626         and     $t2,lr,$i3,lsr#24
 627         and     $i1,lr,$i3,lsr#16
 628         ldrb    $t2,[$tbl,$t2]
 629         and     $i2,lr,$i3,lsr#8
 630         ldrb    $i1,[$tbl,$i1]
 631         and     $i3,lr,$i3
 632         ldrb    $i2,[$tbl,$i2]
 633         orr     $t2,$t2,$i1,lsl#24
 634         ldrb    $i3,[$tbl,$i3]
 635         orr     $t2,$t2,$i2,lsl#16
 636         ldr     $t1,[$t3],#4                    @ rcon[i++]
 637         orr     $t2,$t2,$i3,lsl#8
 638         eor     $i3,$t2,$t1
 639         eor     $s0,$s0,$i3                     @ rk[8]=rk[0]^...
 640         eor     $s1,$s1,$s0                     @ rk[9]=rk[1]^rk[8]
 641         str     $s0,[$key],#32
 642         eor     $s2,$s2,$s1                     @ rk[10]=rk[2]^rk[9]
 643         str     $s1,[$key,#-28]
 644         eor     $s3,$s3,$s2                     @ rk[11]=rk[3]^rk[10]
 645         str     $s2,[$key,#-24]
 646         subs    $rounds,$rounds,#1
 647         str     $s3,[$key,#-20]
 648         subeq   r2,$key,#256
 649         beq     .Ldone
 650
 651         and     $t2,lr,$s3
 652         and     $i1,lr,$s3,lsr#8
 653         ldrb    $t2,[$tbl,$t2]
 654         and     $i2,lr,$s3,lsr#16
 655         ldrb    $i1,[$tbl,$i1]
 656         and     $i3,lr,$s3,lsr#24
 657         ldrb    $i2,[$tbl,$i2]
 658         orr     $t2,$t2,$i1,lsl#8
 659         ldrb    $i3,[$tbl,$i3]
 660         orr     $t2,$t2,$i2,lsl#16
 661         ldr     $t1,[$key,#-48]
 662         orr     $t2,$t2,$i3,lsl#24
 663
 664         ldr     $i1,[$key,#-44]
 665         ldr     $i2,[$key,#-40]
 666         eor     $t1,$t1,$t2                     @ rk[12]=rk[4]^...
 667         ldr     $i3,[$key,#-36]
 668         eor     $i1,$i1,$t1                     @ rk[13]=rk[5]^rk[12]
 669         str     $t1,[$key,#-16]
 670         eor     $i2,$i2,$i1                     @ rk[14]=rk[6]^rk[13]
 671         str     $i1,[$key,#-12]
 672         eor     $i3,$i3,$i2                     @ rk[15]=rk[7]^rk[14]
 673         str     $i2,[$key,#-8]
 674         str     $i3,[$key,#-4]
 675         b       .L256_loop
 676
 677 .Ldone: mov     r0,#0
 678         ldmia   sp!,{r4-r12,lr}
 679 .Labrt: tst     lr,#1
 680         moveq   pc,lr                   @ be binary compatible with V4, yet
 681         bx      lr                      @ interoperable with Thumb ISA:-)
 682 .size   AES_set_encrypt_key,.-AES_set_encrypt_key
 683
 684 .global AES_set_decrypt_key
 685 .type   AES_set_decrypt_key,%function
 686 .align  5
 687 AES_set_decrypt_key:
 688         str     lr,[sp,#-4]!            @ push lr
 689         bl      _armv4_AES_set_encrypt_key
 690         teq     r0,#0
 691         ldrne   lr,[sp],#4              @ pop lr
 692         bne     .Labrt
 693
 694         stmdb   sp!,{r4-r12}
 695
 696         ldr     $rounds,[r2,#240]       @ AES_set_encrypt_key preserves r2,
 697         mov     $key,r2                 @ which is AES_KEY *key
 698         mov     $i1,r2
 699         add     $i2,r2,$rounds,lsl#4
 700
 701 .Linv:  ldr     $s0,[$i1]
 702         ldr     $s1,[$i1,#4]
 703         ldr     $s2,[$i1,#8]
 704         ldr     $s3,[$i1,#12]
 705         ldr     $t1,[$i2]
 706         ldr     $t2,[$i2,#4]
 707         ldr     $t3,[$i2,#8]
 708         ldr     $i3,[$i2,#12]
 709         str     $s0,[$i2],#-16
 710         str     $s1,[$i2,#16+4]
 711         str     $s2,[$i2,#16+8]
 712         str     $s3,[$i2,#16+12]
 713         str     $t1,[$i1],#16
 714         str     $t2,[$i1,#-12]
 715         str     $t3,[$i1,#-8]
 716         str     $i3,[$i1,#-4]
 717         teq     $i1,$i2
 718         bne     .Linv
 719 ___
 720 $mask80=$i1;
 721 $mask1b=$i2;
 722 $mask7f=$i3;
 723 $code.=<<___;
 724         ldr     $s0,[$key,#16]!         @ prefetch tp1
 725         mov     $mask80,#0x80
 726         mov     $mask1b,#0x1b
 727         orr     $mask80,$mask80,#0x8000
 728         orr     $mask1b,$mask1b,#0x1b00
 729         orr     $mask80,$mask80,$mask80,lsl#16
 730         orr     $mask1b,$mask1b,$mask1b,lsl#16
 731         sub     $rounds,$rounds,#1
 732         mvn     $mask7f,$mask80
 733         mov     $rounds,$rounds,lsl#2   @ (rounds-1)*4
 734
 735 .Lmix:  and     $t1,$s0,$mask80
 736         and     $s1,$s0,$mask7f
 737         sub     $t1,$t1,$t1,lsr#7
 738         and     $t1,$t1,$mask1b
 739         eor     $s1,$t1,$s1,lsl#1       @ tp2
 740
 741         and     $t1,$s1,$mask80
 742         and     $s2,$s1,$mask7f
 743         sub     $t1,$t1,$t1,lsr#7
 744         and     $t1,$t1,$mask1b
 745         eor     $s2,$t1,$s2,lsl#1       @ tp4
 746
 747         and     $t1,$s2,$mask80
 748         and     $s3,$s2,$mask7f
 749         sub     $t1,$t1,$t1,lsr#7
 750         and     $t1,$t1,$mask1b
 751         eor     $s3,$t1,$s3,lsl#1       @ tp8
 752
 753         eor     $t1,$s1,$s2
 754         eor     $t2,$s0,$s3             @ tp9
 755         eor     $t1,$t1,$s3             @ tpe
 756         eor     $t1,$t1,$s1,ror#24
 757         eor     $t1,$t1,$t2,ror#24      @ ^= ROTATE(tpb=tp9^tp2,8)
 758         eor     $t1,$t1,$s2,ror#16
 759         eor     $t1,$t1,$t2,ror#16      @ ^= ROTATE(tpd=tp9^tp4,16)
 760         eor     $t1,$t1,$t2,ror#8       @ ^= ROTATE(tp9,24)
 761
 762         ldr     $s0,[$key,#4]           @ prefetch tp1
 763         str     $t1,[$key],#4
 764         subs    $rounds,$rounds,#1
 765         bne     .Lmix
 766
 767         mov     r0,#0
 768 #if __ARM_ARCH__>=5
 769         ldmia   sp!,{r4-r12,pc}
 770 #else
 771         ldmia   sp!,{r4-r12,lr}
 772         tst     lr,#1
 773         moveq   pc,lr                   @ be binary compatible with V4, yet
 774         bx      lr                      @ interoperable with Thumb ISA:-)
 775 #endif
 776 .size   AES_set_decrypt_key,.-AES_set_decrypt_key
 777
 778 .type   AES_Td,%object
 779 .align  5
 780 AES_Td:
 781 .word   0x51f4a750, 0x7e416553, 0x1a17a4c3, 0x3a275e96
 782 .word   0x3bab6bcb, 0x1f9d45f1, 0xacfa58ab, 0x4be30393
 783 .word   0x2030fa55, 0xad766df6, 0x88cc7691, 0xf5024c25
 784 .word   0x4fe5d7fc, 0xc52acbd7, 0x26354480, 0xb562a38f
 785 .word   0xdeb15a49, 0x25ba1b67, 0x45ea0e98, 0x5dfec0e1
 786 .word   0xc32f7502, 0x814cf012, 0x8d4697a3, 0x6bd3f9c6
 787 .word   0x038f5fe7, 0x15929c95, 0xbf6d7aeb, 0x955259da
 788 .word   0xd4be832d, 0x587421d3, 0x49e06929, 0x8ec9c844
 789 .word   0x75c2896a, 0xf48e7978, 0x99583e6b, 0x27b971dd
 790 .word   0xbee14fb6, 0xf088ad17, 0xc920ac66, 0x7dce3ab4
 791 .word   0x63df4a18, 0xe51a3182, 0x97513360, 0x62537f45
 792 .word   0xb16477e0, 0xbb6bae84, 0xfe81a01c, 0xf9082b94
 793 .word   0x70486858, 0x8f45fd19, 0x94de6c87, 0x527bf8b7
 794 .word   0xab73d323, 0x724b02e2, 0xe31f8f57, 0x6655ab2a
 795 .word   0xb2eb2807, 0x2fb5c203, 0x86c57b9a, 0xd33708a5
 796 .word   0x302887f2, 0x23bfa5b2, 0x02036aba, 0xed16825c
 797 .word   0x8acf1c2b, 0xa779b492, 0xf307f2f0, 0x4e69e2a1
 798 .word   0x65daf4cd, 0x0605bed5, 0xd134621f, 0xc4a6fe8a
 799 .word   0x342e539d, 0xa2f355a0, 0x058ae132, 0xa4f6eb75
 800 .word   0x0b83ec39, 0x4060efaa, 0x5e719f06, 0xbd6e1051
 801 .word   0x3e218af9, 0x96dd063d, 0xdd3e05ae, 0x4de6bd46
 802 .word   0x91548db5, 0x71c45d05, 0x0406d46f, 0x605015ff
 803 .word   0x1998fb24, 0xd6bde997, 0x894043cc, 0x67d99e77
 804 .word   0xb0e842bd, 0x07898b88, 0xe7195b38, 0x79c8eedb
 805 .word   0xa17c0a47, 0x7c420fe9, 0xf8841ec9, 0x00000000
 806 .word   0x09808683, 0x322bed48, 0x1e1170ac, 0x6c5a724e
 807 .word   0xfd0efffb, 0x0f853856, 0x3daed51e, 0x362d3927
 808 .word   0x0a0fd964, 0x685ca621, 0x9b5b54d1, 0x24362e3a
 809 .word   0x0c0a67b1, 0x9357e70f, 0xb4ee96d2, 0x1b9b919e
 810 .word   0x80c0c54f, 0x61dc20a2, 0x5a774b69, 0x1c121a16
 811 .word   0xe293ba0a, 0xc0a02ae5, 0x3c22e043, 0x121b171d
 812 .word   0x0e090d0b, 0xf28bc7ad, 0x2db6a8b9, 0x141ea9c8
 813 .word   0x57f11985, 0xaf75074c, 0xee99ddbb, 0xa37f60fd
 814 .word   0xf701269f, 0x5c72f5bc, 0x44663bc5, 0x5bfb7e34
 815 .word   0x8b432976, 0xcb23c6dc, 0xb6edfc68, 0xb8e4f163
 816 .word   0xd731dcca, 0x42638510, 0x13972240, 0x84c61120
 817 .word   0x854a247d, 0xd2bb3df8, 0xaef93211, 0xc729a16d
 818 .word   0x1d9e2f4b, 0xdcb230f3, 0x0d8652ec, 0x77c1e3d0
 819 .word   0x2bb3166c, 0xa970b999, 0x119448fa, 0x47e96422
 820 .word   0xa8fc8cc4, 0xa0f03f1a, 0x567d2cd8, 0x223390ef
 821 .word   0x87494ec7, 0xd938d1c1, 0x8ccaa2fe, 0x98d40b36
 822 .word   0xa6f581cf, 0xa57ade28, 0xdab78e26, 0x3fadbfa4
 823 .word   0x2c3a9de4, 0x5078920d, 0x6a5fcc9b, 0x547e4662
 824 .word   0xf68d13c2, 0x90d8b8e8, 0x2e39f75e, 0x82c3aff5
 825 .word   0x9f5d80be, 0x69d0937c, 0x6fd52da9, 0xcf2512b3
 826 .word   0xc8ac993b, 0x10187da7, 0xe89c636e, 0xdb3bbb7b
 827 .word   0xcd267809, 0x6e5918f4, 0xec9ab701, 0x834f9aa8
 828 .word   0xe6956e65, 0xaaffe67e, 0x21bccf08, 0xef15e8e6
 829 .word   0xbae79bd9, 0x4a6f36ce, 0xea9f09d4, 0x29b07cd6
 830 .word   0x31a4b2af, 0x2a3f2331, 0xc6a59430, 0x35a266c0
 831 .word   0x744ebc37, 0xfc82caa6, 0xe090d0b0, 0x33a7d815
 832 .word   0xf104984a, 0x41ecdaf7, 0x7fcd500e, 0x1791f62f
 833 .word   0x764dd68d, 0x43efb04d, 0xccaa4d54, 0xe49604df
 834 .word   0x9ed1b5e3, 0x4c6a881b, 0xc12c1fb8, 0x4665517f
 835 .word   0x9d5eea04, 0x018c355d, 0xfa877473, 0xfb0b412e
 836 .word   0xb3671d5a, 0x92dbd252, 0xe9105633, 0x6dd64713
 837 .word   0x9ad7618c, 0x37a10c7a, 0x59f8148e, 0xeb133c89
 838 .word   0xcea927ee, 0xb761c935, 0xe11ce5ed, 0x7a47b13c
 839 .word   0x9cd2df59, 0x55f2733f, 0x1814ce79, 0x73c737bf
 840 .word   0x53f7cdea, 0x5ffdaa5b, 0xdf3d6f14, 0x7844db86
 841 .word   0xcaaff381, 0xb968c43e, 0x3824342c, 0xc2a3405f
 842 .word   0x161dc372, 0xbce2250c, 0x283c498b, 0xff0d9541
 843 .word   0x39a80171, 0x080cb3de, 0xd8b4e49c, 0x6456c190
 844 .word   0x7bcb8461, 0xd532b670, 0x486c5c74, 0xd0b85742
 845 @ Td4[256]
 846 .byte   0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38
 847 .byte   0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb
 848 .byte   0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87
 849 .byte   0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb
 850 .byte   0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d
 851 .byte   0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e
 852 .byte   0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2
 853 .byte   0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25
 854 .byte   0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16
 855 .byte   0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92
 856 .byte   0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda
 857 .byte   0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84
 858 .byte   0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a
 859 .byte   0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06
 860 .byte   0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02
 861 .byte   0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b
 862 .byte   0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea
 863 .byte   0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73
 864 .byte   0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85
 865 .byte   0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e
 866 .byte   0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89
 867 .byte   0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b
 868 .byte   0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20
 869 .byte   0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4
 870 .byte   0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31
 871 .byte   0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f
 872 .byte   0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d
 873 .byte   0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef
 874 .byte   0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0
 875 .byte   0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61
 876 .byte   0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26
 877 .byte   0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d
 878 .size   AES_Td,.-AES_Td
 879
 880 @ void AES_decrypt(const unsigned char *in, unsigned char *out,
 881 @                const AES_KEY *key) {
 882 .global AES_decrypt
 883 .type   AES_decrypt,%function
 884 .align  5
 885 AES_decrypt:
 886         sub     r3,pc,#8                @ AES_decrypt
 887         stmdb   sp!,{r1,r4-r12,lr}
 888         mov     $rounds,r0              @ inp
 889         mov     $key,r2
 890         sub     $tbl,r3,#AES_decrypt-AES_Td             @ Td
 891 #if __ARM_ARCH__<7 || defined(__STRICT_ALIGNMENT)
 892         ldrb    $s0,[$rounds,#3]        @ load input data in endian-neutral
 893         ldrb    $t1,[$rounds,#2]        @ manner...
 894         ldrb    $t2,[$rounds,#1]
 895         ldrb    $t3,[$rounds,#0]
 896         orr     $s0,$s0,$t1,lsl#8
 897         ldrb    $s1,[$rounds,#7]
 898         orr     $s0,$s0,$t2,lsl#16
 899         ldrb    $t1,[$rounds,#6]
 900         orr     $s0,$s0,$t3,lsl#24
 901         ldrb    $t2,[$rounds,#5]
 902         ldrb    $t3,[$rounds,#4]
 903         orr     $s1,$s1,$t1,lsl#8
 904         ldrb    $s2,[$rounds,#11]
 905         orr     $s1,$s1,$t2,lsl#16
 906         ldrb    $t1,[$rounds,#10]
 907         orr     $s1,$s1,$t3,lsl#24
 908         ldrb    $t2,[$rounds,#9]
 909         ldrb    $t3,[$rounds,#8]
 910         orr     $s2,$s2,$t1,lsl#8
 911         ldrb    $s3,[$rounds,#15]
 912         orr     $s2,$s2,$t2,lsl#16
 913         ldrb    $t1,[$rounds,#14]
 914         orr     $s2,$s2,$t3,lsl#24
 915         ldrb    $t2,[$rounds,#13]
 916         ldrb    $t3,[$rounds,#12]
 917         orr     $s3,$s3,$t1,lsl#8
 918         orr     $s3,$s3,$t2,lsl#16
 919         orr     $s3,$s3,$t3,lsl#24
 920 #else
 921         ldr     $s0,[$rounds,#0]
 922         ldr     $s1,[$rounds,#4]
 923         ldr     $s2,[$rounds,#8]
 924         ldr     $s3,[$rounds,#12]
 925 #ifdef __ARMEL__
 926         rev     $s0,$s0
 927         rev     $s1,$s1
 928         rev     $s2,$s2
 929         rev     $s3,$s3
 930 #endif
 931 #endif
 932         bl      _armv4_AES_decrypt
 933
 934         ldr     $rounds,[sp],#4         @ pop out
 935 #if __ARM_ARCH__>=7 && !defined(__STRICT_ALIGNMENT)
 936 #ifdef __ARMEL__
 937         rev     $s0,$s0
 938         rev     $s1,$s1
 939         rev     $s2,$s2
 940         rev     $s3,$s3
 941 #endif
 942         str     $s0,[$rounds,#0]
 943         str     $s1,[$rounds,#4]
 944         str     $s2,[$rounds,#8]
 945         str     $s3,[$rounds,#12]
 946 #else
 947         mov     $t1,$s0,lsr#24          @ write output in endian-neutral
 948         mov     $t2,$s0,lsr#16          @ manner...
 949         mov     $t3,$s0,lsr#8
 950         strb    $t1,[$rounds,#0]
 951         strb    $t2,[$rounds,#1]
 952         mov     $t1,$s1,lsr#24
 953         strb    $t3,[$rounds,#2]
 954         mov     $t2,$s1,lsr#16
 955         strb    $s0,[$rounds,#3]
 956         mov     $t3,$s1,lsr#8
 957         strb    $t1,[$rounds,#4]
 958         strb    $t2,[$rounds,#5]
 959         mov     $t1,$s2,lsr#24
 960         strb    $t3,[$rounds,#6]
 961         mov     $t2,$s2,lsr#16
 962         strb    $s1,[$rounds,#7]
 963         mov     $t3,$s2,lsr#8
 964         strb    $t1,[$rounds,#8]
 965         strb    $t2,[$rounds,#9]
 966         mov     $t1,$s3,lsr#24
 967         strb    $t3,[$rounds,#10]
 968         mov     $t2,$s3,lsr#16
 969         strb    $s2,[$rounds,#11]
 970         mov     $t3,$s3,lsr#8
 971         strb    $t1,[$rounds,#12]
 972         strb    $t2,[$rounds,#13]
 973         strb    $t3,[$rounds,#14]
 974         strb    $s3,[$rounds,#15]
 975 #endif
 976 #if __ARM_ARCH__>=5
 977         ldmia   sp!,{r4-r12,pc}
 978 #else
 979         ldmia   sp!,{r4-r12,lr}
 980         tst     lr,#1
 981         moveq   pc,lr                   @ be binary compatible with V4, yet
 982         bx      lr                      @ interoperable with Thumb ISA:-)
 983 #endif
 984 .size   AES_decrypt,.-AES_decrypt
 985
 986 .type   _armv4_AES_decrypt,%function
 987 .align  2
 988 _armv4_AES_decrypt:
 989         str     lr,[sp,#-4]!            @ push lr
 990         ldmia   $key!,{$t1-$i1}
 991         eor     $s0,$s0,$t1
 992         ldr     $rounds,[$key,#240-16]
 993         eor     $s1,$s1,$t2
 994         eor     $s2,$s2,$t3
 995         eor     $s3,$s3,$i1
 996         sub     $rounds,$rounds,#1
 997         mov     lr,#255
 998
 999         and     $i1,lr,$s0,lsr#16
1000         and     $i2,lr,$s0,lsr#8
1001         and     $i3,lr,$s0
1002         mov     $s0,$s0,lsr#24
1003 .Ldec_loop:
1004         ldr     $t1,[$tbl,$i1,lsl#2]    @ Td1[s0>>16]
1005         and     $i1,lr,$s1              @ i0
1006         ldr     $t2,[$tbl,$i2,lsl#2]    @ Td2[s0>>8]
1007         and     $i2,lr,$s1,lsr#16
1008         ldr     $t3,[$tbl,$i3,lsl#2]    @ Td3[s0>>0]
1009         and     $i3,lr,$s1,lsr#8
1010         ldr     $s0,[$tbl,$s0,lsl#2]    @ Td0[s0>>24]
1011         mov     $s1,$s1,lsr#24
1012
1013         ldr     $i1,[$tbl,$i1,lsl#2]    @ Td3[s1>>0]
1014         ldr     $i2,[$tbl,$i2,lsl#2]    @ Td1[s1>>16]
1015         ldr     $i3,[$tbl,$i3,lsl#2]    @ Td2[s1>>8]
1016         eor     $s0,$s0,$i1,ror#24
1017         ldr     $s1,[$tbl,$s1,lsl#2]    @ Td0[s1>>24]
1018         and     $i1,lr,$s2,lsr#8        @ i0
1019         eor     $t2,$i2,$t2,ror#8
1020         and     $i2,lr,$s2              @ i1
1021         eor     $t3,$i3,$t3,ror#8
1022         and     $i3,lr,$s2,lsr#16
1023         ldr     $i1,[$tbl,$i1,lsl#2]    @ Td2[s2>>8]
1024         eor     $s1,$s1,$t1,ror#8
1025         ldr     $i2,[$tbl,$i2,lsl#2]    @ Td3[s2>>0]
1026         mov     $s2,$s2,lsr#24
1027
1028         ldr     $i3,[$tbl,$i3,lsl#2]    @ Td1[s2>>16]
1029         eor     $s0,$s0,$i1,ror#16
1030         ldr     $s2,[$tbl,$s2,lsl#2]    @ Td0[s2>>24]
1031         and     $i1,lr,$s3,lsr#16       @ i0
1032         eor     $s1,$s1,$i2,ror#24
1033         and     $i2,lr,$s3,lsr#8        @ i1
1034         eor     $t3,$i3,$t3,ror#8
1035         and     $i3,lr,$s3              @ i2
1036         ldr     $i1,[$tbl,$i1,lsl#2]    @ Td1[s3>>16]
1037         eor     $s2,$s2,$t2,ror#8
1038         ldr     $i2,[$tbl,$i2,lsl#2]    @ Td2[s3>>8]
1039         mov     $s3,$s3,lsr#24
1040
1041         ldr     $i3,[$tbl,$i3,lsl#2]    @ Td3[s3>>0]
1042         eor     $s0,$s0,$i1,ror#8
1043         ldr     $i1,[$key],#16
1044         eor     $s1,$s1,$i2,ror#16
1045         ldr     $s3,[$tbl,$s3,lsl#2]    @ Td0[s3>>24]
1046         eor     $s2,$s2,$i3,ror#24
1047
1048         ldr     $t1,[$key,#-12]
1049         eor     $s0,$s0,$i1
1050         ldr     $t2,[$key,#-8]
1051         eor     $s3,$s3,$t3,ror#8
1052         ldr     $t3,[$key,#-4]
1053         and     $i1,lr,$s0,lsr#16
1054         eor     $s1,$s1,$t1
1055         and     $i2,lr,$s0,lsr#8
1056         eor     $s2,$s2,$t2
1057         and     $i3,lr,$s0
1058         eor     $s3,$s3,$t3
1059         mov     $s0,$s0,lsr#24
1060
1061         subs    $rounds,$rounds,#1
1062         bne     .Ldec_loop
1063
1064         add     $tbl,$tbl,#1024
1065
1066         ldr     $t2,[$tbl,#0]           @ prefetch Td4
1067         ldr     $t3,[$tbl,#32]
1068         ldr     $t1,[$tbl,#64]
1069         ldr     $t2,[$tbl,#96]
1070         ldr     $t3,[$tbl,#128]
1071         ldr     $t1,[$tbl,#160]
1072         ldr     $t2,[$tbl,#192]
1073         ldr     $t3,[$tbl,#224]
1074
1075         ldrb    $s0,[$tbl,$s0]          @ Td4[s0>>24]
1076         ldrb    $t1,[$tbl,$i1]          @ Td4[s0>>16]
1077         and     $i1,lr,$s1              @ i0
1078         ldrb    $t2,[$tbl,$i2]          @ Td4[s0>>8]
1079         and     $i2,lr,$s1,lsr#16
1080         ldrb    $t3,[$tbl,$i3]          @ Td4[s0>>0]
1081         and     $i3,lr,$s1,lsr#8
1082
1083         ldrb    $i1,[$tbl,$i1]          @ Td4[s1>>0]
1084         ldrb    $s1,[$tbl,$s1,lsr#24]   @ Td4[s1>>24]
1085         ldrb    $i2,[$tbl,$i2]          @ Td4[s1>>16]
1086         eor     $s0,$i1,$s0,lsl#24
1087         ldrb    $i3,[$tbl,$i3]          @ Td4[s1>>8]
1088         eor     $s1,$t1,$s1,lsl#8
1089         and     $i1,lr,$s2,lsr#8        @ i0
1090         eor     $t2,$t2,$i2,lsl#8
1091         and     $i2,lr,$s2              @ i1
1092         ldrb    $i1,[$tbl,$i1]          @ Td4[s2>>8]
1093         eor     $t3,$t3,$i3,lsl#8
1094         ldrb    $i2,[$tbl,$i2]          @ Td4[s2>>0]
1095         and     $i3,lr,$s2,lsr#16
1096
1097         ldrb    $s2,[$tbl,$s2,lsr#24]   @ Td4[s2>>24]
1098         eor     $s0,$s0,$i1,lsl#8
1099         ldrb    $i3,[$tbl,$i3]          @ Td4[s2>>16]
1100         eor     $s1,$i2,$s1,lsl#16
1101         and     $i1,lr,$s3,lsr#16       @ i0
1102         eor     $s2,$t2,$s2,lsl#16
1103         and     $i2,lr,$s3,lsr#8        @ i1
1104         ldrb    $i1,[$tbl,$i1]          @ Td4[s3>>16]
1105         eor     $t3,$t3,$i3,lsl#16
1106         ldrb    $i2,[$tbl,$i2]          @ Td4[s3>>8]
1107         and     $i3,lr,$s3              @ i2
1108
1109         ldrb    $i3,[$tbl,$i3]          @ Td4[s3>>0]
1110         ldrb    $s3,[$tbl,$s3,lsr#24]   @ Td4[s3>>24]
1111         eor     $s0,$s0,$i1,lsl#16
1112         ldr     $i1,[$key,#0]
1113         eor     $s1,$s1,$i2,lsl#8
1114         ldr     $t1,[$key,#4]
1115         eor     $s2,$i3,$s2,lsl#8
1116         ldr     $t2,[$key,#8]
1117         eor     $s3,$t3,$s3,lsl#24
1118         ldr     $t3,[$key,#12]
1119
1120         eor     $s0,$s0,$i1
1121         eor     $s1,$s1,$t1
1122         eor     $s2,$s2,$t2
1123         eor     $s3,$s3,$t3
1124
1125         sub     $tbl,$tbl,#1024
1126         ldr     pc,[sp],#4              @ pop and return
1127 .size   _armv4_AES_decrypt,.-_armv4_AES_decrypt
1128 .asciz  "AES for ARMv4, CRYPTOGAMS by <appro\@openssl.org>"
1129 .align  2
1130 ___
1131
1132 $code =~ s/\bbx\s+lr\b/.word\t0xe12fff1e/gm;    # make it possible to compile with -march=armv4
1133 print $code;
1134 close STDOUT;   # enforce flush