crypto/aes/asm/aes-armv4.pl

   1 #!/usr/bin/env perl
   2
   3 # ====================================================================
   4 # Written by Andy Polyakov <appro@openssl.org> 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 $flavour = shift;
  36 if ($flavour=~/^\w[\w\-]*\.\w+$/) { $output=$flavour; undef $flavour; }
  37 else { while (($output=shift) && ($output!~/^\w[\w\-]*\.\w+$/)) {} }
  38
  39 if ($flavour && $flavour ne "void") {
  40     $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
  41     ( $xlate="${dir}arm-xlate.pl" and -f $xlate ) or
  42     ( $xlate="${dir}../../perlasm/arm-xlate.pl" and -f $xlate) or
  43     die "can't locate arm-xlate.pl";
  44
  45     open STDOUT,"| \"$^X\" $xlate $flavour $output";
  46 } else {
  47     open STDOUT,">$output";
  48 }
  49
  50 $s0="r0";
  51 $s1="r1";
  52 $s2="r2";
  53 $s3="r3";
  54 $t1="r4";
  55 $t2="r5";
  56 $t3="r6";
  57 $i1="r7";
  58 $i2="r8";
  59 $i3="r9";
  60
  61 $tbl="r10";
  62 $key="r11";
  63 $rounds="r12";
  64
  65 $code=<<___;
  66 #ifndef __KERNEL__
  67 # include "arm_arch.h"
  68 #else
  69 # define __ARM_ARCH__ __LINUX_ARM_ARCH__
  70 #endif
  71
  72 .text
  73 #if __ARM_ARCH__<7
  74 .code   32
  75 #else
  76 .syntax unified
  77 # if defined(__thumb2__) && !defined(__APPLE__)
  78 .thumb
  79 # else
  80 .code   32
  81 # endif
  82 #endif
  83
  84 .type   AES_Te,%object
  85 .align  5
  86 AES_Te:
  87 .word   0xc66363a5, 0xf87c7c84, 0xee777799, 0xf67b7b8d
  88 .word   0xfff2f20d, 0xd66b6bbd, 0xde6f6fb1, 0x91c5c554
  89 .word   0x60303050, 0x02010103, 0xce6767a9, 0x562b2b7d
  90 .word   0xe7fefe19, 0xb5d7d762, 0x4dababe6, 0xec76769a
  91 .word   0x8fcaca45, 0x1f82829d, 0x89c9c940, 0xfa7d7d87
  92 .word   0xeffafa15, 0xb25959eb, 0x8e4747c9, 0xfbf0f00b
  93 .word   0x41adadec, 0xb3d4d467, 0x5fa2a2fd, 0x45afafea
  94 .word   0x239c9cbf, 0x53a4a4f7, 0xe4727296, 0x9bc0c05b
  95 .word   0x75b7b7c2, 0xe1fdfd1c, 0x3d9393ae, 0x4c26266a
  96 .word   0x6c36365a, 0x7e3f3f41, 0xf5f7f702, 0x83cccc4f
  97 .word   0x6834345c, 0x51a5a5f4, 0xd1e5e534, 0xf9f1f108
  98 .word   0xe2717193, 0xabd8d873, 0x62313153, 0x2a15153f
  99 .word   0x0804040c, 0x95c7c752, 0x46232365, 0x9dc3c35e
 100 .word   0x30181828, 0x379696a1, 0x0a05050f, 0x2f9a9ab5
 101 .word   0x0e070709, 0x24121236, 0x1b80809b, 0xdfe2e23d
 102 .word   0xcdebeb26, 0x4e272769, 0x7fb2b2cd, 0xea75759f
 103 .word   0x1209091b, 0x1d83839e, 0x582c2c74, 0x341a1a2e
 104 .word   0x361b1b2d, 0xdc6e6eb2, 0xb45a5aee, 0x5ba0a0fb
 105 .word   0xa45252f6, 0x763b3b4d, 0xb7d6d661, 0x7db3b3ce
 106 .word   0x5229297b, 0xdde3e33e, 0x5e2f2f71, 0x13848497
 107 .word   0xa65353f5, 0xb9d1d168, 0x00000000, 0xc1eded2c
 108 .word   0x40202060, 0xe3fcfc1f, 0x79b1b1c8, 0xb65b5bed
 109 .word   0xd46a6abe, 0x8dcbcb46, 0x67bebed9, 0x7239394b
 110 .word   0x944a4ade, 0x984c4cd4, 0xb05858e8, 0x85cfcf4a
 111 .word   0xbbd0d06b, 0xc5efef2a, 0x4faaaae5, 0xedfbfb16
 112 .word   0x864343c5, 0x9a4d4dd7, 0x66333355, 0x11858594
 113 .word   0x8a4545cf, 0xe9f9f910, 0x04020206, 0xfe7f7f81
 114 .word   0xa05050f0, 0x783c3c44, 0x259f9fba, 0x4ba8a8e3
 115 .word   0xa25151f3, 0x5da3a3fe, 0x804040c0, 0x058f8f8a
 116 .word   0x3f9292ad, 0x219d9dbc, 0x70383848, 0xf1f5f504
 117 .word   0x63bcbcdf, 0x77b6b6c1, 0xafdada75, 0x42212163
 118 .word   0x20101030, 0xe5ffff1a, 0xfdf3f30e, 0xbfd2d26d
 119 .word   0x81cdcd4c, 0x180c0c14, 0x26131335, 0xc3ecec2f
 120 .word   0xbe5f5fe1, 0x359797a2, 0x884444cc, 0x2e171739
 121 .word   0x93c4c457, 0x55a7a7f2, 0xfc7e7e82, 0x7a3d3d47
 122 .word   0xc86464ac, 0xba5d5de7, 0x3219192b, 0xe6737395
 123 .word   0xc06060a0, 0x19818198, 0x9e4f4fd1, 0xa3dcdc7f
 124 .word   0x44222266, 0x542a2a7e, 0x3b9090ab, 0x0b888883
 125 .word   0x8c4646ca, 0xc7eeee29, 0x6bb8b8d3, 0x2814143c
 126 .word   0xa7dede79, 0xbc5e5ee2, 0x160b0b1d, 0xaddbdb76
 127 .word   0xdbe0e03b, 0x64323256, 0x743a3a4e, 0x140a0a1e
 128 .word   0x924949db, 0x0c06060a, 0x4824246c, 0xb85c5ce4
 129 .word   0x9fc2c25d, 0xbdd3d36e, 0x43acacef, 0xc46262a6
 130 .word   0x399191a8, 0x319595a4, 0xd3e4e437, 0xf279798b
 131 .word   0xd5e7e732, 0x8bc8c843, 0x6e373759, 0xda6d6db7
 132 .word   0x018d8d8c, 0xb1d5d564, 0x9c4e4ed2, 0x49a9a9e0
 133 .word   0xd86c6cb4, 0xac5656fa, 0xf3f4f407, 0xcfeaea25
 134 .word   0xca6565af, 0xf47a7a8e, 0x47aeaee9, 0x10080818
 135 .word   0x6fbabad5, 0xf0787888, 0x4a25256f, 0x5c2e2e72
 136 .word   0x381c1c24, 0x57a6a6f1, 0x73b4b4c7, 0x97c6c651
 137 .word   0xcbe8e823, 0xa1dddd7c, 0xe874749c, 0x3e1f1f21
 138 .word   0x964b4bdd, 0x61bdbddc, 0x0d8b8b86, 0x0f8a8a85
 139 .word   0xe0707090, 0x7c3e3e42, 0x71b5b5c4, 0xcc6666aa
 140 .word   0x904848d8, 0x06030305, 0xf7f6f601, 0x1c0e0e12
 141 .word   0xc26161a3, 0x6a35355f, 0xae5757f9, 0x69b9b9d0
 142 .word   0x17868691, 0x99c1c158, 0x3a1d1d27, 0x279e9eb9
 143 .word   0xd9e1e138, 0xebf8f813, 0x2b9898b3, 0x22111133
 144 .word   0xd26969bb, 0xa9d9d970, 0x078e8e89, 0x339494a7
 145 .word   0x2d9b9bb6, 0x3c1e1e22, 0x15878792, 0xc9e9e920
 146 .word   0x87cece49, 0xaa5555ff, 0x50282878, 0xa5dfdf7a
 147 .word   0x038c8c8f, 0x59a1a1f8, 0x09898980, 0x1a0d0d17
 148 .word   0x65bfbfda, 0xd7e6e631, 0x844242c6, 0xd06868b8
 149 .word   0x824141c3, 0x299999b0, 0x5a2d2d77, 0x1e0f0f11
 150 .word   0x7bb0b0cb, 0xa85454fc, 0x6dbbbbd6, 0x2c16163a
 151 @ Te4[256]
 152 .byte   0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5
 153 .byte   0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76
 154 .byte   0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0
 155 .byte   0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0
 156 .byte   0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc
 157 .byte   0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15
 158 .byte   0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a
 159 .byte   0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75
 160 .byte   0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0
 161 .byte   0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84
 162 .byte   0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b
 163 .byte   0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf
 164 .byte   0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85
 165 .byte   0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8
 166 .byte   0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5
 167 .byte   0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2
 168 .byte   0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17
 169 .byte   0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73
 170 .byte   0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88
 171 .byte   0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb
 172 .byte   0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c
 173 .byte   0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79
 174 .byte   0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9
 175 .byte   0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08
 176 .byte   0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6
 177 .byte   0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a
 178 .byte   0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e
 179 .byte   0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e
 180 .byte   0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94
 181 .byte   0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf
 182 .byte   0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68
 183 .byte   0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16
 184 @ rcon[]
 185 .word   0x01000000, 0x02000000, 0x04000000, 0x08000000
 186 .word   0x10000000, 0x20000000, 0x40000000, 0x80000000
 187 .word   0x1B000000, 0x36000000, 0, 0, 0, 0, 0, 0
 188 .size   AES_Te,.-AES_Te
 189
 190 @ void AES_encrypt(const unsigned char *in, unsigned char *out,
 191 @                const AES_KEY *key) {
 192 .global AES_encrypt
 193 .type   AES_encrypt,%function
 194 .align  5
 195 AES_encrypt:
 196 #if __ARM_ARCH__<7
 197         sub     r3,pc,#8                @ AES_encrypt
 198 #else
 199         adr     r3,AES_encrypt
 200 #endif
 201         stmdb   sp!,{r1,r4-r12,lr}
 202 #ifdef  __APPLE__
 203         adr     $tbl,AES_Te
 204 #else
 205         sub     $tbl,r3,#AES_encrypt-AES_Te     @ Te
 206 #endif
 207         mov     $rounds,r0              @ inp
 208         mov     $key,r2
 209 #if __ARM_ARCH__<7
 210         ldrb    $s0,[$rounds,#3]        @ load input data in endian-neutral
 211         ldrb    $t1,[$rounds,#2]        @ manner...
 212         ldrb    $t2,[$rounds,#1]
 213         ldrb    $t3,[$rounds,#0]
 214         orr     $s0,$s0,$t1,lsl#8
 215         ldrb    $s1,[$rounds,#7]
 216         orr     $s0,$s0,$t2,lsl#16
 217         ldrb    $t1,[$rounds,#6]
 218         orr     $s0,$s0,$t3,lsl#24
 219         ldrb    $t2,[$rounds,#5]
 220         ldrb    $t3,[$rounds,#4]
 221         orr     $s1,$s1,$t1,lsl#8
 222         ldrb    $s2,[$rounds,#11]
 223         orr     $s1,$s1,$t2,lsl#16
 224         ldrb    $t1,[$rounds,#10]
 225         orr     $s1,$s1,$t3,lsl#24
 226         ldrb    $t2,[$rounds,#9]
 227         ldrb    $t3,[$rounds,#8]
 228         orr     $s2,$s2,$t1,lsl#8
 229         ldrb    $s3,[$rounds,#15]
 230         orr     $s2,$s2,$t2,lsl#16
 231         ldrb    $t1,[$rounds,#14]
 232         orr     $s2,$s2,$t3,lsl#24
 233         ldrb    $t2,[$rounds,#13]
 234         ldrb    $t3,[$rounds,#12]
 235         orr     $s3,$s3,$t1,lsl#8
 236         orr     $s3,$s3,$t2,lsl#16
 237         orr     $s3,$s3,$t3,lsl#24
 238 #else
 239         ldr     $s0,[$rounds,#0]
 240         ldr     $s1,[$rounds,#4]
 241         ldr     $s2,[$rounds,#8]
 242         ldr     $s3,[$rounds,#12]
 243 #ifdef __ARMEL__
 244         rev     $s0,$s0
 245         rev     $s1,$s1
 246         rev     $s2,$s2
 247         rev     $s3,$s3
 248 #endif
 249 #endif
 250         bl      _armv4_AES_encrypt
 251
 252         ldr     $rounds,[sp],#4         @ pop out
 253 #if __ARM_ARCH__>=7
 254 #ifdef __ARMEL__
 255         rev     $s0,$s0
 256         rev     $s1,$s1
 257         rev     $s2,$s2
 258         rev     $s3,$s3
 259 #endif
 260         str     $s0,[$rounds,#0]
 261         str     $s1,[$rounds,#4]
 262         str     $s2,[$rounds,#8]
 263         str     $s3,[$rounds,#12]
 264 #else
 265         mov     $t1,$s0,lsr#24          @ write output in endian-neutral
 266         mov     $t2,$s0,lsr#16          @ manner...
 267         mov     $t3,$s0,lsr#8
 268         strb    $t1,[$rounds,#0]
 269         strb    $t2,[$rounds,#1]
 270         mov     $t1,$s1,lsr#24
 271         strb    $t3,[$rounds,#2]
 272         mov     $t2,$s1,lsr#16
 273         strb    $s0,[$rounds,#3]
 274         mov     $t3,$s1,lsr#8
 275         strb    $t1,[$rounds,#4]
 276         strb    $t2,[$rounds,#5]
 277         mov     $t1,$s2,lsr#24
 278         strb    $t3,[$rounds,#6]
 279         mov     $t2,$s2,lsr#16
 280         strb    $s1,[$rounds,#7]
 281         mov     $t3,$s2,lsr#8
 282         strb    $t1,[$rounds,#8]
 283         strb    $t2,[$rounds,#9]
 284         mov     $t1,$s3,lsr#24
 285         strb    $t3,[$rounds,#10]
 286         mov     $t2,$s3,lsr#16
 287         strb    $s2,[$rounds,#11]
 288         mov     $t3,$s3,lsr#8
 289         strb    $t1,[$rounds,#12]
 290         strb    $t2,[$rounds,#13]
 291         strb    $t3,[$rounds,#14]
 292         strb    $s3,[$rounds,#15]
 293 #endif
 294 #if __ARM_ARCH__>=5
 295         ldmia   sp!,{r4-r12,pc}
 296 #else
 297         ldmia   sp!,{r4-r12,lr}
 298         tst     lr,#1
 299         moveq   pc,lr                   @ be binary compatible with V4, yet
 300         bx      lr                      @ interoperable with Thumb ISA:-)
 301 #endif
 302 .size   AES_encrypt,.-AES_encrypt
 303
 304 .type   _armv4_AES_encrypt,%function
 305 .align  2
 306 _armv4_AES_encrypt:
 307         str     lr,[sp,#-4]!            @ push lr
 308         ldmia   $key!,{$t1-$i1}
 309         eor     $s0,$s0,$t1
 310         ldr     $rounds,[$key,#240-16]
 311         eor     $s1,$s1,$t2
 312         eor     $s2,$s2,$t3
 313         eor     $s3,$s3,$i1
 314         sub     $rounds,$rounds,#1
 315         mov     lr,#255
 316
 317         and     $i1,lr,$s0
 318         and     $i2,lr,$s0,lsr#8
 319         and     $i3,lr,$s0,lsr#16
 320         mov     $s0,$s0,lsr#24
 321 .Lenc_loop:
 322         ldr     $t1,[$tbl,$i1,lsl#2]    @ Te3[s0>>0]
 323         and     $i1,lr,$s1,lsr#16       @ i0
 324         ldr     $t2,[$tbl,$i2,lsl#2]    @ Te2[s0>>8]
 325         and     $i2,lr,$s1
 326         ldr     $t3,[$tbl,$i3,lsl#2]    @ Te1[s0>>16]
 327         and     $i3,lr,$s1,lsr#8
 328         ldr     $s0,[$tbl,$s0,lsl#2]    @ Te0[s0>>24]
 329         mov     $s1,$s1,lsr#24
 330
 331         ldr     $i1,[$tbl,$i1,lsl#2]    @ Te1[s1>>16]
 332         ldr     $i2,[$tbl,$i2,lsl#2]    @ Te3[s1>>0]
 333         ldr     $i3,[$tbl,$i3,lsl#2]    @ Te2[s1>>8]
 334         eor     $s0,$s0,$i1,ror#8
 335         ldr     $s1,[$tbl,$s1,lsl#2]    @ Te0[s1>>24]
 336         and     $i1,lr,$s2,lsr#8        @ i0
 337         eor     $t2,$t2,$i2,ror#8
 338         and     $i2,lr,$s2,lsr#16       @ i1
 339         eor     $t3,$t3,$i3,ror#8
 340         and     $i3,lr,$s2
 341         ldr     $i1,[$tbl,$i1,lsl#2]    @ Te2[s2>>8]
 342         eor     $s1,$s1,$t1,ror#24
 343         ldr     $i2,[$tbl,$i2,lsl#2]    @ Te1[s2>>16]
 344         mov     $s2,$s2,lsr#24
 345
 346         ldr     $i3,[$tbl,$i3,lsl#2]    @ Te3[s2>>0]
 347         eor     $s0,$s0,$i1,ror#16
 348         ldr     $s2,[$tbl,$s2,lsl#2]    @ Te0[s2>>24]
 349         and     $i1,lr,$s3              @ i0
 350         eor     $s1,$s1,$i2,ror#8
 351         and     $i2,lr,$s3,lsr#8        @ i1
 352         eor     $t3,$t3,$i3,ror#16
 353         and     $i3,lr,$s3,lsr#16       @ i2
 354         ldr     $i1,[$tbl,$i1,lsl#2]    @ Te3[s3>>0]
 355         eor     $s2,$s2,$t2,ror#16
 356         ldr     $i2,[$tbl,$i2,lsl#2]    @ Te2[s3>>8]
 357         mov     $s3,$s3,lsr#24
 358
 359         ldr     $i3,[$tbl,$i3,lsl#2]    @ Te1[s3>>16]
 360         eor     $s0,$s0,$i1,ror#24
 361         ldr     $i1,[$key],#16
 362         eor     $s1,$s1,$i2,ror#16
 363         ldr     $s3,[$tbl,$s3,lsl#2]    @ Te0[s3>>24]
 364         eor     $s2,$s2,$i3,ror#8
 365         ldr     $t1,[$key,#-12]
 366         eor     $s3,$s3,$t3,ror#8
 367
 368         ldr     $t2,[$key,#-8]
 369         eor     $s0,$s0,$i1
 370         ldr     $t3,[$key,#-4]
 371         and     $i1,lr,$s0
 372         eor     $s1,$s1,$t1
 373         and     $i2,lr,$s0,lsr#8
 374         eor     $s2,$s2,$t2
 375         and     $i3,lr,$s0,lsr#16
 376         eor     $s3,$s3,$t3
 377         mov     $s0,$s0,lsr#24
 378
 379         subs    $rounds,$rounds,#1
 380         bne     .Lenc_loop
 381
 382         add     $tbl,$tbl,#2
 383
 384         ldrb    $t1,[$tbl,$i1,lsl#2]    @ Te4[s0>>0]
 385         and     $i1,lr,$s1,lsr#16       @ i0
 386         ldrb    $t2,[$tbl,$i2,lsl#2]    @ Te4[s0>>8]
 387         and     $i2,lr,$s1
 388         ldrb    $t3,[$tbl,$i3,lsl#2]    @ Te4[s0>>16]
 389         and     $i3,lr,$s1,lsr#8
 390         ldrb    $s0,[$tbl,$s0,lsl#2]    @ Te4[s0>>24]
 391         mov     $s1,$s1,lsr#24
 392
 393         ldrb    $i1,[$tbl,$i1,lsl#2]    @ Te4[s1>>16]
 394         ldrb    $i2,[$tbl,$i2,lsl#2]    @ Te4[s1>>0]
 395         ldrb    $i3,[$tbl,$i3,lsl#2]    @ Te4[s1>>8]
 396         eor     $s0,$i1,$s0,lsl#8
 397         ldrb    $s1,[$tbl,$s1,lsl#2]    @ Te4[s1>>24]
 398         and     $i1,lr,$s2,lsr#8        @ i0
 399         eor     $t2,$i2,$t2,lsl#8
 400         and     $i2,lr,$s2,lsr#16       @ i1
 401         eor     $t3,$i3,$t3,lsl#8
 402         and     $i3,lr,$s2
 403         ldrb    $i1,[$tbl,$i1,lsl#2]    @ Te4[s2>>8]
 404         eor     $s1,$t1,$s1,lsl#24
 405         ldrb    $i2,[$tbl,$i2,lsl#2]    @ Te4[s2>>16]
 406         mov     $s2,$s2,lsr#24
 407
 408         ldrb    $i3,[$tbl,$i3,lsl#2]    @ Te4[s2>>0]
 409         eor     $s0,$i1,$s0,lsl#8
 410         ldrb    $s2,[$tbl,$s2,lsl#2]    @ Te4[s2>>24]
 411         and     $i1,lr,$s3              @ i0
 412         eor     $s1,$s1,$i2,lsl#16
 413         and     $i2,lr,$s3,lsr#8        @ i1
 414         eor     $t3,$i3,$t3,lsl#8
 415         and     $i3,lr,$s3,lsr#16       @ i2
 416         ldrb    $i1,[$tbl,$i1,lsl#2]    @ Te4[s3>>0]
 417         eor     $s2,$t2,$s2,lsl#24
 418         ldrb    $i2,[$tbl,$i2,lsl#2]    @ Te4[s3>>8]
 419         mov     $s3,$s3,lsr#24
 420
 421         ldrb    $i3,[$tbl,$i3,lsl#2]    @ Te4[s3>>16]
 422         eor     $s0,$i1,$s0,lsl#8
 423         ldr     $i1,[$key,#0]
 424         ldrb    $s3,[$tbl,$s3,lsl#2]    @ Te4[s3>>24]
 425         eor     $s1,$s1,$i2,lsl#8
 426         ldr     $t1,[$key,#4]
 427         eor     $s2,$s2,$i3,lsl#16
 428         ldr     $t2,[$key,#8]
 429         eor     $s3,$t3,$s3,lsl#24
 430         ldr     $t3,[$key,#12]
 431
 432         eor     $s0,$s0,$i1
 433         eor     $s1,$s1,$t1
 434         eor     $s2,$s2,$t2
 435         eor     $s3,$s3,$t3
 436
 437         sub     $tbl,$tbl,#2
 438         ldr     pc,[sp],#4              @ pop and return
 439 .size   _armv4_AES_encrypt,.-_armv4_AES_encrypt
 440
 441 .global AES_set_encrypt_key
 442 .type   AES_set_encrypt_key,%function
 443 .align  5
 444 AES_set_encrypt_key:
 445 _armv4_AES_set_encrypt_key:
 446 #if __ARM_ARCH__<7
 447         sub     r3,pc,#8                @ AES_set_encrypt_key
 448 #else
 449         adr     r3,AES_set_encrypt_key
 450 #endif
 451         teq     r0,#0
 452 #if __ARM_ARCH__>=7
 453         itt     eq                      @ Thumb2 thing, sanity check in ARM
 454 #endif
 455         moveq   r0,#-1
 456         beq     .Labrt
 457         teq     r2,#0
 458 #if __ARM_ARCH__>=7
 459         itt     eq                      @ Thumb2 thing, sanity check in ARM
 460 #endif
 461         moveq   r0,#-1
 462         beq     .Labrt
 463
 464         teq     r1,#128
 465         beq     .Lok
 466         teq     r1,#192
 467         beq     .Lok
 468         teq     r1,#256
 469 #if __ARM_ARCH__>=7
 470         itt     ne                      @ Thumb2 thing, sanity check in ARM
 471 #endif
 472         movne   r0,#-1
 473         bne     .Labrt
 474
 475 .Lok:   stmdb   sp!,{r4-r12,lr}
 476         mov     $rounds,r0              @ inp
 477         mov     lr,r1                   @ bits
 478         mov     $key,r2                 @ key
 479
 480 #ifdef  __APPLE__
 481         adr     $tbl,AES_Te+1024                                @ Te4
 482 #else
 483         sub     $tbl,r3,#_armv4_AES_set_encrypt_key-AES_Te-1024 @ Te4
 484 #endif
 485
 486 #if __ARM_ARCH__<7
 487         ldrb    $s0,[$rounds,#3]        @ load input data in endian-neutral
 488         ldrb    $t1,[$rounds,#2]        @ manner...
 489         ldrb    $t2,[$rounds,#1]
 490         ldrb    $t3,[$rounds,#0]
 491         orr     $s0,$s0,$t1,lsl#8
 492         ldrb    $s1,[$rounds,#7]
 493         orr     $s0,$s0,$t2,lsl#16
 494         ldrb    $t1,[$rounds,#6]
 495         orr     $s0,$s0,$t3,lsl#24
 496         ldrb    $t2,[$rounds,#5]
 497         ldrb    $t3,[$rounds,#4]
 498         orr     $s1,$s1,$t1,lsl#8
 499         ldrb    $s2,[$rounds,#11]
 500         orr     $s1,$s1,$t2,lsl#16
 501         ldrb    $t1,[$rounds,#10]
 502         orr     $s1,$s1,$t3,lsl#24
 503         ldrb    $t2,[$rounds,#9]
 504         ldrb    $t3,[$rounds,#8]
 505         orr     $s2,$s2,$t1,lsl#8
 506         ldrb    $s3,[$rounds,#15]
 507         orr     $s2,$s2,$t2,lsl#16
 508         ldrb    $t1,[$rounds,#14]
 509         orr     $s2,$s2,$t3,lsl#24
 510         ldrb    $t2,[$rounds,#13]
 511         ldrb    $t3,[$rounds,#12]
 512         orr     $s3,$s3,$t1,lsl#8
 513         str     $s0,[$key],#16
 514         orr     $s3,$s3,$t2,lsl#16
 515         str     $s1,[$key,#-12]
 516         orr     $s3,$s3,$t3,lsl#24
 517         str     $s2,[$key,#-8]
 518         str     $s3,[$key,#-4]
 519 #else
 520         ldr     $s0,[$rounds,#0]
 521         ldr     $s1,[$rounds,#4]
 522         ldr     $s2,[$rounds,#8]
 523         ldr     $s3,[$rounds,#12]
 524 #ifdef __ARMEL__
 525         rev     $s0,$s0
 526         rev     $s1,$s1
 527         rev     $s2,$s2
 528         rev     $s3,$s3
 529 #endif
 530         str     $s0,[$key],#16
 531         str     $s1,[$key,#-12]
 532         str     $s2,[$key,#-8]
 533         str     $s3,[$key,#-4]
 534 #endif
 535
 536         teq     lr,#128
 537         bne     .Lnot128
 538         mov     $rounds,#10
 539         str     $rounds,[$key,#240-16]
 540         add     $t3,$tbl,#256                   @ rcon
 541         mov     lr,#255
 542
 543 .L128_loop:
 544         and     $t2,lr,$s3,lsr#24
 545         and     $i1,lr,$s3,lsr#16
 546         ldrb    $t2,[$tbl,$t2]
 547         and     $i2,lr,$s3,lsr#8
 548         ldrb    $i1,[$tbl,$i1]
 549         and     $i3,lr,$s3
 550         ldrb    $i2,[$tbl,$i2]
 551         orr     $t2,$t2,$i1,lsl#24
 552         ldrb    $i3,[$tbl,$i3]
 553         orr     $t2,$t2,$i2,lsl#16
 554         ldr     $t1,[$t3],#4                    @ rcon[i++]
 555         orr     $t2,$t2,$i3,lsl#8
 556         eor     $t2,$t2,$t1
 557         eor     $s0,$s0,$t2                     @ rk[4]=rk[0]^...
 558         eor     $s1,$s1,$s0                     @ rk[5]=rk[1]^rk[4]
 559         str     $s0,[$key],#16
 560         eor     $s2,$s2,$s1                     @ rk[6]=rk[2]^rk[5]
 561         str     $s1,[$key,#-12]
 562         eor     $s3,$s3,$s2                     @ rk[7]=rk[3]^rk[6]
 563         str     $s2,[$key,#-8]
 564         subs    $rounds,$rounds,#1
 565         str     $s3,[$key,#-4]
 566         bne     .L128_loop
 567         sub     r2,$key,#176
 568         b       .Ldone
 569
 570 .Lnot128:
 571 #if __ARM_ARCH__<7
 572         ldrb    $i2,[$rounds,#19]
 573         ldrb    $t1,[$rounds,#18]
 574         ldrb    $t2,[$rounds,#17]
 575         ldrb    $t3,[$rounds,#16]
 576         orr     $i2,$i2,$t1,lsl#8
 577         ldrb    $i3,[$rounds,#23]
 578         orr     $i2,$i2,$t2,lsl#16
 579         ldrb    $t1,[$rounds,#22]
 580         orr     $i2,$i2,$t3,lsl#24
 581         ldrb    $t2,[$rounds,#21]
 582         ldrb    $t3,[$rounds,#20]
 583         orr     $i3,$i3,$t1,lsl#8
 584         orr     $i3,$i3,$t2,lsl#16
 585         str     $i2,[$key],#8
 586         orr     $i3,$i3,$t3,lsl#24
 587         str     $i3,[$key,#-4]
 588 #else
 589         ldr     $i2,[$rounds,#16]
 590         ldr     $i3,[$rounds,#20]
 591 #ifdef __ARMEL__
 592         rev     $i2,$i2
 593         rev     $i3,$i3
 594 #endif
 595         str     $i2,[$key],#8
 596         str     $i3,[$key,#-4]
 597 #endif
 598
 599         teq     lr,#192
 600         bne     .Lnot192
 601         mov     $rounds,#12
 602         str     $rounds,[$key,#240-24]
 603         add     $t3,$tbl,#256                   @ rcon
 604         mov     lr,#255
 605         mov     $rounds,#8
 606
 607 .L192_loop:
 608         and     $t2,lr,$i3,lsr#24
 609         and     $i1,lr,$i3,lsr#16
 610         ldrb    $t2,[$tbl,$t2]
 611         and     $i2,lr,$i3,lsr#8
 612         ldrb    $i1,[$tbl,$i1]
 613         and     $i3,lr,$i3
 614         ldrb    $i2,[$tbl,$i2]
 615         orr     $t2,$t2,$i1,lsl#24
 616         ldrb    $i3,[$tbl,$i3]
 617         orr     $t2,$t2,$i2,lsl#16
 618         ldr     $t1,[$t3],#4                    @ rcon[i++]
 619         orr     $t2,$t2,$i3,lsl#8
 620         eor     $i3,$t2,$t1
 621         eor     $s0,$s0,$i3                     @ rk[6]=rk[0]^...
 622         eor     $s1,$s1,$s0                     @ rk[7]=rk[1]^rk[6]
 623         str     $s0,[$key],#24
 624         eor     $s2,$s2,$s1                     @ rk[8]=rk[2]^rk[7]
 625         str     $s1,[$key,#-20]
 626         eor     $s3,$s3,$s2                     @ rk[9]=rk[3]^rk[8]
 627         str     $s2,[$key,#-16]
 628         subs    $rounds,$rounds,#1
 629         str     $s3,[$key,#-12]
 630 #if __ARM_ARCH__>=7
 631         itt     eq                              @ Thumb2 thing, sanity check in ARM
 632 #endif
 633         subeq   r2,$key,#216
 634         beq     .Ldone
 635
 636         ldr     $i1,[$key,#-32]
 637         ldr     $i2,[$key,#-28]
 638         eor     $i1,$i1,$s3                     @ rk[10]=rk[4]^rk[9]
 639         eor     $i3,$i2,$i1                     @ rk[11]=rk[5]^rk[10]
 640         str     $i1,[$key,#-8]
 641         str     $i3,[$key,#-4]
 642         b       .L192_loop
 643
 644 .Lnot192:
 645 #if __ARM_ARCH__<7
 646         ldrb    $i2,[$rounds,#27]
 647         ldrb    $t1,[$rounds,#26]
 648         ldrb    $t2,[$rounds,#25]
 649         ldrb    $t3,[$rounds,#24]
 650         orr     $i2,$i2,$t1,lsl#8
 651         ldrb    $i3,[$rounds,#31]
 652         orr     $i2,$i2,$t2,lsl#16
 653         ldrb    $t1,[$rounds,#30]
 654         orr     $i2,$i2,$t3,lsl#24
 655         ldrb    $t2,[$rounds,#29]
 656         ldrb    $t3,[$rounds,#28]
 657         orr     $i3,$i3,$t1,lsl#8
 658         orr     $i3,$i3,$t2,lsl#16
 659         str     $i2,[$key],#8
 660         orr     $i3,$i3,$t3,lsl#24
 661         str     $i3,[$key,#-4]
 662 #else
 663         ldr     $i2,[$rounds,#24]
 664         ldr     $i3,[$rounds,#28]
 665 #ifdef __ARMEL__
 666         rev     $i2,$i2
 667         rev     $i3,$i3
 668 #endif
 669         str     $i2,[$key],#8
 670         str     $i3,[$key,#-4]
 671 #endif
 672
 673         mov     $rounds,#14
 674         str     $rounds,[$key,#240-32]
 675         add     $t3,$tbl,#256                   @ rcon
 676         mov     lr,#255
 677         mov     $rounds,#7
 678
 679 .L256_loop:
 680         and     $t2,lr,$i3,lsr#24
 681         and     $i1,lr,$i3,lsr#16
 682         ldrb    $t2,[$tbl,$t2]
 683         and     $i2,lr,$i3,lsr#8
 684         ldrb    $i1,[$tbl,$i1]
 685         and     $i3,lr,$i3
 686         ldrb    $i2,[$tbl,$i2]
 687         orr     $t2,$t2,$i1,lsl#24
 688         ldrb    $i3,[$tbl,$i3]
 689         orr     $t2,$t2,$i2,lsl#16
 690         ldr     $t1,[$t3],#4                    @ rcon[i++]
 691         orr     $t2,$t2,$i3,lsl#8
 692         eor     $i3,$t2,$t1
 693         eor     $s0,$s0,$i3                     @ rk[8]=rk[0]^...
 694         eor     $s1,$s1,$s0                     @ rk[9]=rk[1]^rk[8]
 695         str     $s0,[$key],#32
 696         eor     $s2,$s2,$s1                     @ rk[10]=rk[2]^rk[9]
 697         str     $s1,[$key,#-28]
 698         eor     $s3,$s3,$s2                     @ rk[11]=rk[3]^rk[10]
 699         str     $s2,[$key,#-24]
 700         subs    $rounds,$rounds,#1
 701         str     $s3,[$key,#-20]
 702 #if __ARM_ARCH__>=7
 703         itt     eq                              @ Thumb2 thing, sanity check in ARM
 704 #endif
 705         subeq   r2,$key,#256
 706         beq     .Ldone
 707
 708         and     $t2,lr,$s3
 709         and     $i1,lr,$s3,lsr#8
 710         ldrb    $t2,[$tbl,$t2]
 711         and     $i2,lr,$s3,lsr#16
 712         ldrb    $i1,[$tbl,$i1]
 713         and     $i3,lr,$s3,lsr#24
 714         ldrb    $i2,[$tbl,$i2]
 715         orr     $t2,$t2,$i1,lsl#8
 716         ldrb    $i3,[$tbl,$i3]
 717         orr     $t2,$t2,$i2,lsl#16
 718         ldr     $t1,[$key,#-48]
 719         orr     $t2,$t2,$i3,lsl#24
 720
 721         ldr     $i1,[$key,#-44]
 722         ldr     $i2,[$key,#-40]
 723         eor     $t1,$t1,$t2                     @ rk[12]=rk[4]^...
 724         ldr     $i3,[$key,#-36]
 725         eor     $i1,$i1,$t1                     @ rk[13]=rk[5]^rk[12]
 726         str     $t1,[$key,#-16]
 727         eor     $i2,$i2,$i1                     @ rk[14]=rk[6]^rk[13]
 728         str     $i1,[$key,#-12]
 729         eor     $i3,$i3,$i2                     @ rk[15]=rk[7]^rk[14]
 730         str     $i2,[$key,#-8]
 731         str     $i3,[$key,#-4]
 732         b       .L256_loop
 733
 734 .align  2
 735 .Ldone: mov     r0,#0
 736         ldmia   sp!,{r4-r12,lr}
 737 .Labrt:
 738 #if __ARM_ARCH__>=5
 739         ret                             @ bx lr
 740 #else
 741         tst     lr,#1
 742         moveq   pc,lr                   @ be binary compatible with V4, yet
 743         bx      lr                      @ interoperable with Thumb ISA:-)
 744 #endif
 745 .size   AES_set_encrypt_key,.-AES_set_encrypt_key
 746
 747 .global AES_set_decrypt_key
 748 .type   AES_set_decrypt_key,%function
 749 .align  5
 750 AES_set_decrypt_key:
 751         str     lr,[sp,#-4]!            @ push lr
 752         bl      _armv4_AES_set_encrypt_key
 753         teq     r0,#0
 754         ldr     lr,[sp],#4              @ pop lr
 755         bne     .Labrt
 756
 757         mov     r0,r2                   @ AES_set_encrypt_key preserves r2,
 758         mov     r1,r2                   @ which is AES_KEY *key
 759         b       _armv4_AES_set_enc2dec_key
 760 .size   AES_set_decrypt_key,.-AES_set_decrypt_key
 761
 762 @ void AES_set_enc2dec_key(const AES_KEY *inp,AES_KEY *out)
 763 .global AES_set_enc2dec_key
 764 .type   AES_set_enc2dec_key,%function
 765 .align  5
 766 AES_set_enc2dec_key:
 767 _armv4_AES_set_enc2dec_key:
 768         stmdb   sp!,{r4-r12,lr}
 769
 770         ldr     $rounds,[r0,#240]
 771         mov     $i1,r0                  @ input
 772         add     $i2,r0,$rounds,lsl#4
 773         mov     $key,r1                 @ ouput
 774         add     $tbl,r1,$rounds,lsl#4
 775         str     $rounds,[r1,#240]
 776
 777 .Linv:  ldr     $s0,[$i1],#16
 778         ldr     $s1,[$i1,#-12]
 779         ldr     $s2,[$i1,#-8]
 780         ldr     $s3,[$i1,#-4]
 781         ldr     $t1,[$i2],#-16
 782         ldr     $t2,[$i2,#16+4]
 783         ldr     $t3,[$i2,#16+8]
 784         ldr     $i3,[$i2,#16+12]
 785         str     $s0,[$tbl],#-16
 786         str     $s1,[$tbl,#16+4]
 787         str     $s2,[$tbl,#16+8]
 788         str     $s3,[$tbl,#16+12]
 789         str     $t1,[$key],#16
 790         str     $t2,[$key,#-12]
 791         str     $t3,[$key,#-8]
 792         str     $i3,[$key,#-4]
 793         teq     $i1,$i2
 794         bne     .Linv
 795
 796         ldr     $s0,[$i1]
 797         ldr     $s1,[$i1,#4]
 798         ldr     $s2,[$i1,#8]
 799         ldr     $s3,[$i1,#12]
 800         str     $s0,[$key]
 801         str     $s1,[$key,#4]
 802         str     $s2,[$key,#8]
 803         str     $s3,[$key,#12]
 804         sub     $key,$key,$rounds,lsl#3
 805 ___
 806 $mask80=$i1;
 807 $mask1b=$i2;
 808 $mask7f=$i3;
 809 $code.=<<___;
 810         ldr     $s0,[$key,#16]!         @ prefetch tp1
 811         mov     $mask80,#0x80
 812         mov     $mask1b,#0x1b
 813         orr     $mask80,$mask80,#0x8000
 814         orr     $mask1b,$mask1b,#0x1b00
 815         orr     $mask80,$mask80,$mask80,lsl#16
 816         orr     $mask1b,$mask1b,$mask1b,lsl#16
 817         sub     $rounds,$rounds,#1
 818         mvn     $mask7f,$mask80
 819         mov     $rounds,$rounds,lsl#2   @ (rounds-1)*4
 820
 821 .Lmix:  and     $t1,$s0,$mask80
 822         and     $s1,$s0,$mask7f
 823         sub     $t1,$t1,$t1,lsr#7
 824         and     $t1,$t1,$mask1b
 825         eor     $s1,$t1,$s1,lsl#1       @ tp2
 826
 827         and     $t1,$s1,$mask80
 828         and     $s2,$s1,$mask7f
 829         sub     $t1,$t1,$t1,lsr#7
 830         and     $t1,$t1,$mask1b
 831         eor     $s2,$t1,$s2,lsl#1       @ tp4
 832
 833         and     $t1,$s2,$mask80
 834         and     $s3,$s2,$mask7f
 835         sub     $t1,$t1,$t1,lsr#7
 836         and     $t1,$t1,$mask1b
 837         eor     $s3,$t1,$s3,lsl#1       @ tp8
 838
 839         eor     $t1,$s1,$s2
 840         eor     $t2,$s0,$s3             @ tp9
 841         eor     $t1,$t1,$s3             @ tpe
 842         eor     $t1,$t1,$s1,ror#24
 843         eor     $t1,$t1,$t2,ror#24      @ ^= ROTATE(tpb=tp9^tp2,8)
 844         eor     $t1,$t1,$s2,ror#16
 845         eor     $t1,$t1,$t2,ror#16      @ ^= ROTATE(tpd=tp9^tp4,16)
 846         eor     $t1,$t1,$t2,ror#8       @ ^= ROTATE(tp9,24)
 847
 848         ldr     $s0,[$key,#4]           @ prefetch tp1
 849         str     $t1,[$key],#4
 850         subs    $rounds,$rounds,#1
 851         bne     .Lmix
 852
 853         mov     r0,#0
 854 #if __ARM_ARCH__>=5
 855         ldmia   sp!,{r4-r12,pc}
 856 #else
 857         ldmia   sp!,{r4-r12,lr}
 858         tst     lr,#1
 859         moveq   pc,lr                   @ be binary compatible with V4, yet
 860         bx      lr                      @ interoperable with Thumb ISA:-)
 861 #endif
 862 .size   AES_set_enc2dec_key,.-AES_set_enc2dec_key
 863
 864 .type   AES_Td,%object
 865 .align  5
 866 AES_Td:
 867 .word   0x51f4a750, 0x7e416553, 0x1a17a4c3, 0x3a275e96
 868 .word   0x3bab6bcb, 0x1f9d45f1, 0xacfa58ab, 0x4be30393
 869 .word   0x2030fa55, 0xad766df6, 0x88cc7691, 0xf5024c25
 870 .word   0x4fe5d7fc, 0xc52acbd7, 0x26354480, 0xb562a38f
 871 .word   0xdeb15a49, 0x25ba1b67, 0x45ea0e98, 0x5dfec0e1
 872 .word   0xc32f7502, 0x814cf012, 0x8d4697a3, 0x6bd3f9c6
 873 .word   0x038f5fe7, 0x15929c95, 0xbf6d7aeb, 0x955259da
 874 .word   0xd4be832d, 0x587421d3, 0x49e06929, 0x8ec9c844
 875 .word   0x75c2896a, 0xf48e7978, 0x99583e6b, 0x27b971dd
 876 .word   0xbee14fb6, 0xf088ad17, 0xc920ac66, 0x7dce3ab4
 877 .word   0x63df4a18, 0xe51a3182, 0x97513360, 0x62537f45
 878 .word   0xb16477e0, 0xbb6bae84, 0xfe81a01c, 0xf9082b94
 879 .word   0x70486858, 0x8f45fd19, 0x94de6c87, 0x527bf8b7
 880 .word   0xab73d323, 0x724b02e2, 0xe31f8f57, 0x6655ab2a
 881 .word   0xb2eb2807, 0x2fb5c203, 0x86c57b9a, 0xd33708a5
 882 .word   0x302887f2, 0x23bfa5b2, 0x02036aba, 0xed16825c
 883 .word   0x8acf1c2b, 0xa779b492, 0xf307f2f0, 0x4e69e2a1
 884 .word   0x65daf4cd, 0x0605bed5, 0xd134621f, 0xc4a6fe8a
 885 .word   0x342e539d, 0xa2f355a0, 0x058ae132, 0xa4f6eb75
 886 .word   0x0b83ec39, 0x4060efaa, 0x5e719f06, 0xbd6e1051
 887 .word   0x3e218af9, 0x96dd063d, 0xdd3e05ae, 0x4de6bd46
 888 .word   0x91548db5, 0x71c45d05, 0x0406d46f, 0x605015ff
 889 .word   0x1998fb24, 0xd6bde997, 0x894043cc, 0x67d99e77
 890 .word   0xb0e842bd, 0x07898b88, 0xe7195b38, 0x79c8eedb
 891 .word   0xa17c0a47, 0x7c420fe9, 0xf8841ec9, 0x00000000
 892 .word   0x09808683, 0x322bed48, 0x1e1170ac, 0x6c5a724e
 893 .word   0xfd0efffb, 0x0f853856, 0x3daed51e, 0x362d3927
 894 .word   0x0a0fd964, 0x685ca621, 0x9b5b54d1, 0x24362e3a
 895 .word   0x0c0a67b1, 0x9357e70f, 0xb4ee96d2, 0x1b9b919e
 896 .word   0x80c0c54f, 0x61dc20a2, 0x5a774b69, 0x1c121a16
 897 .word   0xe293ba0a, 0xc0a02ae5, 0x3c22e043, 0x121b171d
 898 .word   0x0e090d0b, 0xf28bc7ad, 0x2db6a8b9, 0x141ea9c8
 899 .word   0x57f11985, 0xaf75074c, 0xee99ddbb, 0xa37f60fd
 900 .word   0xf701269f, 0x5c72f5bc, 0x44663bc5, 0x5bfb7e34
 901 .word   0x8b432976, 0xcb23c6dc, 0xb6edfc68, 0xb8e4f163
 902 .word   0xd731dcca, 0x42638510, 0x13972240, 0x84c61120
 903 .word   0x854a247d, 0xd2bb3df8, 0xaef93211, 0xc729a16d
 904 .word   0x1d9e2f4b, 0xdcb230f3, 0x0d8652ec, 0x77c1e3d0
 905 .word   0x2bb3166c, 0xa970b999, 0x119448fa, 0x47e96422
 906 .word   0xa8fc8cc4, 0xa0f03f1a, 0x567d2cd8, 0x223390ef
 907 .word   0x87494ec7, 0xd938d1c1, 0x8ccaa2fe, 0x98d40b36
 908 .word   0xa6f581cf, 0xa57ade28, 0xdab78e26, 0x3fadbfa4
 909 .word   0x2c3a9de4, 0x5078920d, 0x6a5fcc9b, 0x547e4662
 910 .word   0xf68d13c2, 0x90d8b8e8, 0x2e39f75e, 0x82c3aff5
 911 .word   0x9f5d80be, 0x69d0937c, 0x6fd52da9, 0xcf2512b3
 912 .word   0xc8ac993b, 0x10187da7, 0xe89c636e, 0xdb3bbb7b
 913 .word   0xcd267809, 0x6e5918f4, 0xec9ab701, 0x834f9aa8
 914 .word   0xe6956e65, 0xaaffe67e, 0x21bccf08, 0xef15e8e6
 915 .word   0xbae79bd9, 0x4a6f36ce, 0xea9f09d4, 0x29b07cd6
 916 .word   0x31a4b2af, 0x2a3f2331, 0xc6a59430, 0x35a266c0
 917 .word   0x744ebc37, 0xfc82caa6, 0xe090d0b0, 0x33a7d815
 918 .word   0xf104984a, 0x41ecdaf7, 0x7fcd500e, 0x1791f62f
 919 .word   0x764dd68d, 0x43efb04d, 0xccaa4d54, 0xe49604df
 920 .word   0x9ed1b5e3, 0x4c6a881b, 0xc12c1fb8, 0x4665517f
 921 .word   0x9d5eea04, 0x018c355d, 0xfa877473, 0xfb0b412e
 922 .word   0xb3671d5a, 0x92dbd252, 0xe9105633, 0x6dd64713
 923 .word   0x9ad7618c, 0x37a10c7a, 0x59f8148e, 0xeb133c89
 924 .word   0xcea927ee, 0xb761c935, 0xe11ce5ed, 0x7a47b13c
 925 .word   0x9cd2df59, 0x55f2733f, 0x1814ce79, 0x73c737bf
 926 .word   0x53f7cdea, 0x5ffdaa5b, 0xdf3d6f14, 0x7844db86
 927 .word   0xcaaff381, 0xb968c43e, 0x3824342c, 0xc2a3405f
 928 .word   0x161dc372, 0xbce2250c, 0x283c498b, 0xff0d9541
 929 .word   0x39a80171, 0x080cb3de, 0xd8b4e49c, 0x6456c190
 930 .word   0x7bcb8461, 0xd532b670, 0x486c5c74, 0xd0b85742
 931 @ Td4[256]
 932 .byte   0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38
 933 .byte   0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb
 934 .byte   0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87
 935 .byte   0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb
 936 .byte   0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d
 937 .byte   0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e
 938 .byte   0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2
 939 .byte   0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25
 940 .byte   0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16
 941 .byte   0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92
 942 .byte   0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda
 943 .byte   0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84
 944 .byte   0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a
 945 .byte   0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06
 946 .byte   0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02
 947 .byte   0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b
 948 .byte   0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea
 949 .byte   0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73
 950 .byte   0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85
 951 .byte   0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e
 952 .byte   0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89
 953 .byte   0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b
 954 .byte   0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20
 955 .byte   0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4
 956 .byte   0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31
 957 .byte   0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f
 958 .byte   0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d
 959 .byte   0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef
 960 .byte   0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0
 961 .byte   0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61
 962 .byte   0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26
 963 .byte   0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d
 964 .size   AES_Td,.-AES_Td
 965
 966 @ void AES_decrypt(const unsigned char *in, unsigned char *out,
 967 @                const AES_KEY *key) {
 968 .global AES_decrypt
 969 .type   AES_decrypt,%function
 970 .align  5
 971 AES_decrypt:
 972 #if __ARM_ARCH__<7
 973         sub     r3,pc,#8                @ AES_decrypt
 974 #else
 975         adr     r3,AES_decrypt
 976 #endif
 977         stmdb   sp!,{r1,r4-r12,lr}
 978 #ifdef  __APPLE__
 979         adr     $tbl,AES_Td
 980 #else
 981         sub     $tbl,r3,#AES_decrypt-AES_Td     @ Td
 982 #endif
 983         mov     $rounds,r0              @ inp
 984         mov     $key,r2
 985 #if __ARM_ARCH__<7
 986         ldrb    $s0,[$rounds,#3]        @ load input data in endian-neutral
 987         ldrb    $t1,[$rounds,#2]        @ manner...
 988         ldrb    $t2,[$rounds,#1]
 989         ldrb    $t3,[$rounds,#0]
 990         orr     $s0,$s0,$t1,lsl#8
 991         ldrb    $s1,[$rounds,#7]
 992         orr     $s0,$s0,$t2,lsl#16
 993         ldrb    $t1,[$rounds,#6]
 994         orr     $s0,$s0,$t3,lsl#24
 995         ldrb    $t2,[$rounds,#5]
 996         ldrb    $t3,[$rounds,#4]
 997         orr     $s1,$s1,$t1,lsl#8
 998         ldrb    $s2,[$rounds,#11]
 999         orr     $s1,$s1,$t2,lsl#16
1000         ldrb    $t1,[$rounds,#10]
1001         orr     $s1,$s1,$t3,lsl#24
1002         ldrb    $t2,[$rounds,#9]
1003         ldrb    $t3,[$rounds,#8]
1004         orr     $s2,$s2,$t1,lsl#8
1005         ldrb    $s3,[$rounds,#15]
1006         orr     $s2,$s2,$t2,lsl#16
1007         ldrb    $t1,[$rounds,#14]
1008         orr     $s2,$s2,$t3,lsl#24
1009         ldrb    $t2,[$rounds,#13]
1010         ldrb    $t3,[$rounds,#12]
1011         orr     $s3,$s3,$t1,lsl#8
1012         orr     $s3,$s3,$t2,lsl#16
1013         orr     $s3,$s3,$t3,lsl#24
1014 #else
1015         ldr     $s0,[$rounds,#0]
1016         ldr     $s1,[$rounds,#4]
1017         ldr     $s2,[$rounds,#8]
1018         ldr     $s3,[$rounds,#12]
1019 #ifdef __ARMEL__
1020         rev     $s0,$s0
1021         rev     $s1,$s1
1022         rev     $s2,$s2
1023         rev     $s3,$s3
1024 #endif
1025 #endif
1026         bl      _armv4_AES_decrypt
1027
1028         ldr     $rounds,[sp],#4         @ pop out
1029 #if __ARM_ARCH__>=7
1030 #ifdef __ARMEL__
1031         rev     $s0,$s0
1032         rev     $s1,$s1
1033         rev     $s2,$s2
1034         rev     $s3,$s3
1035 #endif
1036         str     $s0,[$rounds,#0]
1037         str     $s1,[$rounds,#4]
1038         str     $s2,[$rounds,#8]
1039         str     $s3,[$rounds,#12]
1040 #else
1041         mov     $t1,$s0,lsr#24          @ write output in endian-neutral
1042         mov     $t2,$s0,lsr#16          @ manner...
1043         mov     $t3,$s0,lsr#8
1044         strb    $t1,[$rounds,#0]
1045         strb    $t2,[$rounds,#1]
1046         mov     $t1,$s1,lsr#24
1047         strb    $t3,[$rounds,#2]
1048         mov     $t2,$s1,lsr#16
1049         strb    $s0,[$rounds,#3]
1050         mov     $t3,$s1,lsr#8
1051         strb    $t1,[$rounds,#4]
1052         strb    $t2,[$rounds,#5]
1053         mov     $t1,$s2,lsr#24
1054         strb    $t3,[$rounds,#6]
1055         mov     $t2,$s2,lsr#16
1056         strb    $s1,[$rounds,#7]
1057         mov     $t3,$s2,lsr#8
1058         strb    $t1,[$rounds,#8]
1059         strb    $t2,[$rounds,#9]
1060         mov     $t1,$s3,lsr#24
1061         strb    $t3,[$rounds,#10]
1062         mov     $t2,$s3,lsr#16
1063         strb    $s2,[$rounds,#11]
1064         mov     $t3,$s3,lsr#8
1065         strb    $t1,[$rounds,#12]
1066         strb    $t2,[$rounds,#13]
1067         strb    $t3,[$rounds,#14]
1068         strb    $s3,[$rounds,#15]
1069 #endif
1070 #if __ARM_ARCH__>=5
1071         ldmia   sp!,{r4-r12,pc}
1072 #else
1073         ldmia   sp!,{r4-r12,lr}
1074         tst     lr,#1
1075         moveq   pc,lr                   @ be binary compatible with V4, yet
1076         bx      lr                      @ interoperable with Thumb ISA:-)
1077 #endif
1078 .size   AES_decrypt,.-AES_decrypt
1079
1080 .type   _armv4_AES_decrypt,%function
1081 .align  2
1082 _armv4_AES_decrypt:
1083         str     lr,[sp,#-4]!            @ push lr
1084         ldmia   $key!,{$t1-$i1}
1085         eor     $s0,$s0,$t1
1086         ldr     $rounds,[$key,#240-16]
1087         eor     $s1,$s1,$t2
1088         eor     $s2,$s2,$t3
1089         eor     $s3,$s3,$i1
1090         sub     $rounds,$rounds,#1
1091         mov     lr,#255
1092
1093         and     $i1,lr,$s0,lsr#16
1094         and     $i2,lr,$s0,lsr#8
1095         and     $i3,lr,$s0
1096         mov     $s0,$s0,lsr#24
1097 .Ldec_loop:
1098         ldr     $t1,[$tbl,$i1,lsl#2]    @ Td1[s0>>16]
1099         and     $i1,lr,$s1              @ i0
1100         ldr     $t2,[$tbl,$i2,lsl#2]    @ Td2[s0>>8]
1101         and     $i2,lr,$s1,lsr#16
1102         ldr     $t3,[$tbl,$i3,lsl#2]    @ Td3[s0>>0]
1103         and     $i3,lr,$s1,lsr#8
1104         ldr     $s0,[$tbl,$s0,lsl#2]    @ Td0[s0>>24]
1105         mov     $s1,$s1,lsr#24
1106
1107         ldr     $i1,[$tbl,$i1,lsl#2]    @ Td3[s1>>0]
1108         ldr     $i2,[$tbl,$i2,lsl#2]    @ Td1[s1>>16]
1109         ldr     $i3,[$tbl,$i3,lsl#2]    @ Td2[s1>>8]
1110         eor     $s0,$s0,$i1,ror#24
1111         ldr     $s1,[$tbl,$s1,lsl#2]    @ Td0[s1>>24]
1112         and     $i1,lr,$s2,lsr#8        @ i0
1113         eor     $t2,$i2,$t2,ror#8
1114         and     $i2,lr,$s2              @ i1
1115         eor     $t3,$i3,$t3,ror#8
1116         and     $i3,lr,$s2,lsr#16
1117         ldr     $i1,[$tbl,$i1,lsl#2]    @ Td2[s2>>8]
1118         eor     $s1,$s1,$t1,ror#8
1119         ldr     $i2,[$tbl,$i2,lsl#2]    @ Td3[s2>>0]
1120         mov     $s2,$s2,lsr#24
1121
1122         ldr     $i3,[$tbl,$i3,lsl#2]    @ Td1[s2>>16]
1123         eor     $s0,$s0,$i1,ror#16
1124         ldr     $s2,[$tbl,$s2,lsl#2]    @ Td0[s2>>24]
1125         and     $i1,lr,$s3,lsr#16       @ i0
1126         eor     $s1,$s1,$i2,ror#24
1127         and     $i2,lr,$s3,lsr#8        @ i1
1128         eor     $t3,$i3,$t3,ror#8
1129         and     $i3,lr,$s3              @ i2
1130         ldr     $i1,[$tbl,$i1,lsl#2]    @ Td1[s3>>16]
1131         eor     $s2,$s2,$t2,ror#8
1132         ldr     $i2,[$tbl,$i2,lsl#2]    @ Td2[s3>>8]
1133         mov     $s3,$s3,lsr#24
1134
1135         ldr     $i3,[$tbl,$i3,lsl#2]    @ Td3[s3>>0]
1136         eor     $s0,$s0,$i1,ror#8
1137         ldr     $i1,[$key],#16
1138         eor     $s1,$s1,$i2,ror#16
1139         ldr     $s3,[$tbl,$s3,lsl#2]    @ Td0[s3>>24]
1140         eor     $s2,$s2,$i3,ror#24
1141
1142         ldr     $t1,[$key,#-12]
1143         eor     $s0,$s0,$i1
1144         ldr     $t2,[$key,#-8]
1145         eor     $s3,$s3,$t3,ror#8
1146         ldr     $t3,[$key,#-4]
1147         and     $i1,lr,$s0,lsr#16
1148         eor     $s1,$s1,$t1
1149         and     $i2,lr,$s0,lsr#8
1150         eor     $s2,$s2,$t2
1151         and     $i3,lr,$s0
1152         eor     $s3,$s3,$t3
1153         mov     $s0,$s0,lsr#24
1154
1155         subs    $rounds,$rounds,#1
1156         bne     .Ldec_loop
1157
1158         add     $tbl,$tbl,#1024
1159
1160         ldr     $t2,[$tbl,#0]           @ prefetch Td4
1161         ldr     $t3,[$tbl,#32]
1162         ldr     $t1,[$tbl,#64]
1163         ldr     $t2,[$tbl,#96]
1164         ldr     $t3,[$tbl,#128]
1165         ldr     $t1,[$tbl,#160]
1166         ldr     $t2,[$tbl,#192]
1167         ldr     $t3,[$tbl,#224]
1168
1169         ldrb    $s0,[$tbl,$s0]          @ Td4[s0>>24]
1170         ldrb    $t1,[$tbl,$i1]          @ Td4[s0>>16]
1171         and     $i1,lr,$s1              @ i0
1172         ldrb    $t2,[$tbl,$i2]          @ Td4[s0>>8]
1173         and     $i2,lr,$s1,lsr#16
1174         ldrb    $t3,[$tbl,$i3]          @ Td4[s0>>0]
1175         and     $i3,lr,$s1,lsr#8
1176
1177         add     $s1,$tbl,$s1,lsr#24
1178         ldrb    $i1,[$tbl,$i1]          @ Td4[s1>>0]
1179         ldrb    $s1,[$s1]               @ Td4[s1>>24]
1180         ldrb    $i2,[$tbl,$i2]          @ Td4[s1>>16]
1181         eor     $s0,$i1,$s0,lsl#24
1182         ldrb    $i3,[$tbl,$i3]          @ Td4[s1>>8]
1183         eor     $s1,$t1,$s1,lsl#8
1184         and     $i1,lr,$s2,lsr#8        @ i0
1185         eor     $t2,$t2,$i2,lsl#8
1186         and     $i2,lr,$s2              @ i1
1187         ldrb    $i1,[$tbl,$i1]          @ Td4[s2>>8]
1188         eor     $t3,$t3,$i3,lsl#8
1189         ldrb    $i2,[$tbl,$i2]          @ Td4[s2>>0]
1190         and     $i3,lr,$s2,lsr#16
1191
1192         add     $s2,$tbl,$s2,lsr#24
1193         ldrb    $s2,[$s2]               @ Td4[s2>>24]
1194         eor     $s0,$s0,$i1,lsl#8
1195         ldrb    $i3,[$tbl,$i3]          @ Td4[s2>>16]
1196         eor     $s1,$i2,$s1,lsl#16
1197         and     $i1,lr,$s3,lsr#16       @ i0
1198         eor     $s2,$t2,$s2,lsl#16
1199         and     $i2,lr,$s3,lsr#8        @ i1
1200         ldrb    $i1,[$tbl,$i1]          @ Td4[s3>>16]
1201         eor     $t3,$t3,$i3,lsl#16
1202         ldrb    $i2,[$tbl,$i2]          @ Td4[s3>>8]
1203         and     $i3,lr,$s3              @ i2
1204
1205         add     $s3,$tbl,$s3,lsr#24
1206         ldrb    $i3,[$tbl,$i3]          @ Td4[s3>>0]
1207         ldrb    $s3,[$s3]               @ Td4[s3>>24]
1208         eor     $s0,$s0,$i1,lsl#16
1209         ldr     $i1,[$key,#0]
1210         eor     $s1,$s1,$i2,lsl#8
1211         ldr     $t1,[$key,#4]
1212         eor     $s2,$i3,$s2,lsl#8
1213         ldr     $t2,[$key,#8]
1214         eor     $s3,$t3,$s3,lsl#24
1215         ldr     $t3,[$key,#12]
1216
1217         eor     $s0,$s0,$i1
1218         eor     $s1,$s1,$t1
1219         eor     $s2,$s2,$t2
1220         eor     $s3,$s3,$t3
1221
1222         sub     $tbl,$tbl,#1024
1223         ldr     pc,[sp],#4              @ pop and return
1224 .size   _armv4_AES_decrypt,.-_armv4_AES_decrypt
1225 .asciz  "AES for ARMv4, CRYPTOGAMS by <appro\@openssl.org>"
1226 .align  2
1227 ___
1228
1229 $code =~ s/\bbx\s+lr\b/.word\t0xe12fff1e/gm;    # make it possible to compile with -march=armv4
1230 $code =~ s/\bret\b/bx\tlr/gm;
1231
1232 open SELF,$0;
1233 while(<SELF>) {
1234         next if (/^#!/);
1235         last if (!s/^#/@/ and !/^$/);
1236         print;
1237 }
1238 close SELF;
1239
1240 print $code;
1241 close STDOUT;   # enforce flush