Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1 | #! /usr/bin/env perl |
| 2 | # Copyright 2007-2016 The OpenSSL Project Authors. All Rights Reserved. |
| 3 | # |
| 4 | # Licensed under the OpenSSL license (the "License"). You may not use |
| 5 | # this file except in compliance with the License. You can obtain a copy |
| 6 | # in the file LICENSE in the source distribution or at |
| 7 | # https://www.openssl.org/source/license.html |
| 8 | |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 9 | |
| 10 | # ==================================================================== |
| 11 | # Written by Andy Polyakov <appro@openssl.org> for the OpenSSL |
| 12 | # project. The module is, however, dual licensed under OpenSSL and |
| 13 | # CRYPTOGAMS licenses depending on where you obtain it. For further |
| 14 | # details see http://www.openssl.org/~appro/cryptogams/. |
| 15 | # ==================================================================== |
| 16 | |
| 17 | # AES for ARMv4 |
| 18 | |
| 19 | # January 2007. |
| 20 | # |
| 21 | # Code uses single 1K S-box and is >2 times faster than code generated |
| 22 | # by gcc-3.4.1. This is thanks to unique feature of ARMv4 ISA, which |
| 23 | # allows to merge logical or arithmetic operation with shift or rotate |
| 24 | # in one instruction and emit combined result every cycle. The module |
| 25 | # is endian-neutral. The performance is ~42 cycles/byte for 128-bit |
| 26 | # key [on single-issue Xscale PXA250 core]. |
| 27 | |
| 28 | # May 2007. |
| 29 | # |
| 30 | # AES_set_[en|de]crypt_key is added. |
| 31 | |
| 32 | # July 2010. |
| 33 | # |
| 34 | # Rescheduling for dual-issue pipeline resulted in 12% improvement on |
| 35 | # Cortex A8 core and ~25 cycles per byte processed with 128-bit key. |
| 36 | |
| 37 | # February 2011. |
| 38 | # |
| 39 | # Profiler-assisted and platform-specific optimization resulted in 16% |
| 40 | # improvement on Cortex A8 core and ~21.5 cycles per byte. |
| 41 | |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 42 | $flavour = shift; |
David Benjamin | c895d6b | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 43 | if ($flavour=~/\w[\w\-]*\.\w+$/) { $output=$flavour; undef $flavour; } |
| 44 | else { while (($output=shift) && ($output!~/\w[\w\-]*\.\w+$/)) {} } |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 45 | |
| 46 | if ($flavour && $flavour ne "void") { |
| 47 | $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1; |
| 48 | ( $xlate="${dir}arm-xlate.pl" and -f $xlate ) or |
Robert Sloan | 572a4e2 | 2017-04-17 10:52:19 -0700 | [diff] [blame] | 49 | ( $xlate="${dir}../../../perlasm/arm-xlate.pl" and -f $xlate) or |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 50 | die "can't locate arm-xlate.pl"; |
| 51 | |
| 52 | open STDOUT,"| \"$^X\" $xlate $flavour $output"; |
| 53 | } else { |
| 54 | open STDOUT,">$output"; |
| 55 | } |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 56 | |
| 57 | $s0="r0"; |
| 58 | $s1="r1"; |
| 59 | $s2="r2"; |
| 60 | $s3="r3"; |
| 61 | $t1="r4"; |
| 62 | $t2="r5"; |
| 63 | $t3="r6"; |
| 64 | $i1="r7"; |
| 65 | $i2="r8"; |
| 66 | $i3="r9"; |
| 67 | |
| 68 | $tbl="r10"; |
| 69 | $key="r11"; |
| 70 | $rounds="r12"; |
| 71 | |
| 72 | $code=<<___; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 73 | #ifndef __KERNEL__ |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 74 | # include <openssl/arm_arch.h> |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 75 | #else |
| 76 | # define __ARM_ARCH__ __LINUX_ARM_ARCH__ |
| 77 | #endif |
| 78 | |
Robert Sloan | 5581810 | 2017-12-18 11:26:17 -0800 | [diff] [blame] | 79 | @ Silence ARMv8 deprecated IT instruction warnings. This file is used by both |
| 80 | @ ARMv7 and ARMv8 processors and does not use ARMv8 instructions. (ARMv8 AES |
| 81 | @ instructions are in aesv8-armx.pl.) |
| 82 | .arch armv7-a |
| 83 | |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 84 | .text |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 85 | #if defined(__thumb2__) && !defined(__APPLE__) |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 86 | .syntax unified |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 87 | .thumb |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 88 | #else |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 89 | .code 32 |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 90 | #undef __thumb2__ |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 91 | #endif |
| 92 | |
| 93 | .type AES_Te,%object |
| 94 | .align 5 |
| 95 | AES_Te: |
| 96 | .word 0xc66363a5, 0xf87c7c84, 0xee777799, 0xf67b7b8d |
| 97 | .word 0xfff2f20d, 0xd66b6bbd, 0xde6f6fb1, 0x91c5c554 |
| 98 | .word 0x60303050, 0x02010103, 0xce6767a9, 0x562b2b7d |
| 99 | .word 0xe7fefe19, 0xb5d7d762, 0x4dababe6, 0xec76769a |
| 100 | .word 0x8fcaca45, 0x1f82829d, 0x89c9c940, 0xfa7d7d87 |
| 101 | .word 0xeffafa15, 0xb25959eb, 0x8e4747c9, 0xfbf0f00b |
| 102 | .word 0x41adadec, 0xb3d4d467, 0x5fa2a2fd, 0x45afafea |
| 103 | .word 0x239c9cbf, 0x53a4a4f7, 0xe4727296, 0x9bc0c05b |
| 104 | .word 0x75b7b7c2, 0xe1fdfd1c, 0x3d9393ae, 0x4c26266a |
| 105 | .word 0x6c36365a, 0x7e3f3f41, 0xf5f7f702, 0x83cccc4f |
| 106 | .word 0x6834345c, 0x51a5a5f4, 0xd1e5e534, 0xf9f1f108 |
| 107 | .word 0xe2717193, 0xabd8d873, 0x62313153, 0x2a15153f |
| 108 | .word 0x0804040c, 0x95c7c752, 0x46232365, 0x9dc3c35e |
| 109 | .word 0x30181828, 0x379696a1, 0x0a05050f, 0x2f9a9ab5 |
| 110 | .word 0x0e070709, 0x24121236, 0x1b80809b, 0xdfe2e23d |
| 111 | .word 0xcdebeb26, 0x4e272769, 0x7fb2b2cd, 0xea75759f |
| 112 | .word 0x1209091b, 0x1d83839e, 0x582c2c74, 0x341a1a2e |
| 113 | .word 0x361b1b2d, 0xdc6e6eb2, 0xb45a5aee, 0x5ba0a0fb |
| 114 | .word 0xa45252f6, 0x763b3b4d, 0xb7d6d661, 0x7db3b3ce |
| 115 | .word 0x5229297b, 0xdde3e33e, 0x5e2f2f71, 0x13848497 |
| 116 | .word 0xa65353f5, 0xb9d1d168, 0x00000000, 0xc1eded2c |
| 117 | .word 0x40202060, 0xe3fcfc1f, 0x79b1b1c8, 0xb65b5bed |
| 118 | .word 0xd46a6abe, 0x8dcbcb46, 0x67bebed9, 0x7239394b |
| 119 | .word 0x944a4ade, 0x984c4cd4, 0xb05858e8, 0x85cfcf4a |
| 120 | .word 0xbbd0d06b, 0xc5efef2a, 0x4faaaae5, 0xedfbfb16 |
| 121 | .word 0x864343c5, 0x9a4d4dd7, 0x66333355, 0x11858594 |
| 122 | .word 0x8a4545cf, 0xe9f9f910, 0x04020206, 0xfe7f7f81 |
| 123 | .word 0xa05050f0, 0x783c3c44, 0x259f9fba, 0x4ba8a8e3 |
| 124 | .word 0xa25151f3, 0x5da3a3fe, 0x804040c0, 0x058f8f8a |
| 125 | .word 0x3f9292ad, 0x219d9dbc, 0x70383848, 0xf1f5f504 |
| 126 | .word 0x63bcbcdf, 0x77b6b6c1, 0xafdada75, 0x42212163 |
| 127 | .word 0x20101030, 0xe5ffff1a, 0xfdf3f30e, 0xbfd2d26d |
| 128 | .word 0x81cdcd4c, 0x180c0c14, 0x26131335, 0xc3ecec2f |
| 129 | .word 0xbe5f5fe1, 0x359797a2, 0x884444cc, 0x2e171739 |
| 130 | .word 0x93c4c457, 0x55a7a7f2, 0xfc7e7e82, 0x7a3d3d47 |
| 131 | .word 0xc86464ac, 0xba5d5de7, 0x3219192b, 0xe6737395 |
| 132 | .word 0xc06060a0, 0x19818198, 0x9e4f4fd1, 0xa3dcdc7f |
| 133 | .word 0x44222266, 0x542a2a7e, 0x3b9090ab, 0x0b888883 |
| 134 | .word 0x8c4646ca, 0xc7eeee29, 0x6bb8b8d3, 0x2814143c |
| 135 | .word 0xa7dede79, 0xbc5e5ee2, 0x160b0b1d, 0xaddbdb76 |
| 136 | .word 0xdbe0e03b, 0x64323256, 0x743a3a4e, 0x140a0a1e |
| 137 | .word 0x924949db, 0x0c06060a, 0x4824246c, 0xb85c5ce4 |
| 138 | .word 0x9fc2c25d, 0xbdd3d36e, 0x43acacef, 0xc46262a6 |
| 139 | .word 0x399191a8, 0x319595a4, 0xd3e4e437, 0xf279798b |
| 140 | .word 0xd5e7e732, 0x8bc8c843, 0x6e373759, 0xda6d6db7 |
| 141 | .word 0x018d8d8c, 0xb1d5d564, 0x9c4e4ed2, 0x49a9a9e0 |
| 142 | .word 0xd86c6cb4, 0xac5656fa, 0xf3f4f407, 0xcfeaea25 |
| 143 | .word 0xca6565af, 0xf47a7a8e, 0x47aeaee9, 0x10080818 |
| 144 | .word 0x6fbabad5, 0xf0787888, 0x4a25256f, 0x5c2e2e72 |
| 145 | .word 0x381c1c24, 0x57a6a6f1, 0x73b4b4c7, 0x97c6c651 |
| 146 | .word 0xcbe8e823, 0xa1dddd7c, 0xe874749c, 0x3e1f1f21 |
| 147 | .word 0x964b4bdd, 0x61bdbddc, 0x0d8b8b86, 0x0f8a8a85 |
| 148 | .word 0xe0707090, 0x7c3e3e42, 0x71b5b5c4, 0xcc6666aa |
| 149 | .word 0x904848d8, 0x06030305, 0xf7f6f601, 0x1c0e0e12 |
| 150 | .word 0xc26161a3, 0x6a35355f, 0xae5757f9, 0x69b9b9d0 |
| 151 | .word 0x17868691, 0x99c1c158, 0x3a1d1d27, 0x279e9eb9 |
| 152 | .word 0xd9e1e138, 0xebf8f813, 0x2b9898b3, 0x22111133 |
| 153 | .word 0xd26969bb, 0xa9d9d970, 0x078e8e89, 0x339494a7 |
| 154 | .word 0x2d9b9bb6, 0x3c1e1e22, 0x15878792, 0xc9e9e920 |
| 155 | .word 0x87cece49, 0xaa5555ff, 0x50282878, 0xa5dfdf7a |
| 156 | .word 0x038c8c8f, 0x59a1a1f8, 0x09898980, 0x1a0d0d17 |
| 157 | .word 0x65bfbfda, 0xd7e6e631, 0x844242c6, 0xd06868b8 |
| 158 | .word 0x824141c3, 0x299999b0, 0x5a2d2d77, 0x1e0f0f11 |
| 159 | .word 0x7bb0b0cb, 0xa85454fc, 0x6dbbbbd6, 0x2c16163a |
| 160 | @ Te4[256] |
| 161 | .byte 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5 |
| 162 | .byte 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76 |
| 163 | .byte 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0 |
| 164 | .byte 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0 |
| 165 | .byte 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc |
| 166 | .byte 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15 |
| 167 | .byte 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a |
| 168 | .byte 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75 |
| 169 | .byte 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0 |
| 170 | .byte 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84 |
| 171 | .byte 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b |
| 172 | .byte 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf |
| 173 | .byte 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85 |
| 174 | .byte 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8 |
| 175 | .byte 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5 |
| 176 | .byte 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2 |
| 177 | .byte 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17 |
| 178 | .byte 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73 |
| 179 | .byte 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88 |
| 180 | .byte 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb |
| 181 | .byte 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c |
| 182 | .byte 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79 |
| 183 | .byte 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9 |
| 184 | .byte 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08 |
| 185 | .byte 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6 |
| 186 | .byte 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a |
| 187 | .byte 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e |
| 188 | .byte 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e |
| 189 | .byte 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94 |
| 190 | .byte 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf |
| 191 | .byte 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68 |
| 192 | .byte 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16 |
| 193 | @ rcon[] |
| 194 | .word 0x01000000, 0x02000000, 0x04000000, 0x08000000 |
| 195 | .word 0x10000000, 0x20000000, 0x40000000, 0x80000000 |
| 196 | .word 0x1B000000, 0x36000000, 0, 0, 0, 0, 0, 0 |
| 197 | .size AES_Te,.-AES_Te |
| 198 | |
| 199 | @ void asm_AES_encrypt(const unsigned char *in, unsigned char *out, |
| 200 | @ const AES_KEY *key) { |
| 201 | .global asm_AES_encrypt |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 202 | .type asm_AES_encrypt,%function |
| 203 | .align 5 |
| 204 | asm_AES_encrypt: |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 205 | #ifndef __thumb2__ |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 206 | sub r3,pc,#8 @ asm_AES_encrypt |
| 207 | #else |
Robert Sloan | d5c2215 | 2017-11-13 09:22:12 -0800 | [diff] [blame] | 208 | adr r3,. |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 209 | #endif |
| 210 | stmdb sp!,{r1,r4-r12,lr} |
Robert Sloan | ab8b888 | 2018-03-26 11:39:51 -0700 | [diff] [blame^] | 211 | #if defined(__thumb2__) || defined(__APPLE__) |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 212 | adr $tbl,AES_Te |
| 213 | #else |
| 214 | sub $tbl,r3,#asm_AES_encrypt-AES_Te @ Te |
| 215 | #endif |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 216 | mov $rounds,r0 @ inp |
| 217 | mov $key,r2 |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 218 | #if __ARM_ARCH__<7 |
| 219 | ldrb $s0,[$rounds,#3] @ load input data in endian-neutral |
| 220 | ldrb $t1,[$rounds,#2] @ manner... |
| 221 | ldrb $t2,[$rounds,#1] |
| 222 | ldrb $t3,[$rounds,#0] |
| 223 | orr $s0,$s0,$t1,lsl#8 |
| 224 | ldrb $s1,[$rounds,#7] |
| 225 | orr $s0,$s0,$t2,lsl#16 |
| 226 | ldrb $t1,[$rounds,#6] |
| 227 | orr $s0,$s0,$t3,lsl#24 |
| 228 | ldrb $t2,[$rounds,#5] |
| 229 | ldrb $t3,[$rounds,#4] |
| 230 | orr $s1,$s1,$t1,lsl#8 |
| 231 | ldrb $s2,[$rounds,#11] |
| 232 | orr $s1,$s1,$t2,lsl#16 |
| 233 | ldrb $t1,[$rounds,#10] |
| 234 | orr $s1,$s1,$t3,lsl#24 |
| 235 | ldrb $t2,[$rounds,#9] |
| 236 | ldrb $t3,[$rounds,#8] |
| 237 | orr $s2,$s2,$t1,lsl#8 |
| 238 | ldrb $s3,[$rounds,#15] |
| 239 | orr $s2,$s2,$t2,lsl#16 |
| 240 | ldrb $t1,[$rounds,#14] |
| 241 | orr $s2,$s2,$t3,lsl#24 |
| 242 | ldrb $t2,[$rounds,#13] |
| 243 | ldrb $t3,[$rounds,#12] |
| 244 | orr $s3,$s3,$t1,lsl#8 |
| 245 | orr $s3,$s3,$t2,lsl#16 |
| 246 | orr $s3,$s3,$t3,lsl#24 |
| 247 | #else |
| 248 | ldr $s0,[$rounds,#0] |
| 249 | ldr $s1,[$rounds,#4] |
| 250 | ldr $s2,[$rounds,#8] |
| 251 | ldr $s3,[$rounds,#12] |
| 252 | #ifdef __ARMEL__ |
| 253 | rev $s0,$s0 |
| 254 | rev $s1,$s1 |
| 255 | rev $s2,$s2 |
| 256 | rev $s3,$s3 |
| 257 | #endif |
| 258 | #endif |
| 259 | bl _armv4_AES_encrypt |
| 260 | |
| 261 | ldr $rounds,[sp],#4 @ pop out |
| 262 | #if __ARM_ARCH__>=7 |
| 263 | #ifdef __ARMEL__ |
| 264 | rev $s0,$s0 |
| 265 | rev $s1,$s1 |
| 266 | rev $s2,$s2 |
| 267 | rev $s3,$s3 |
| 268 | #endif |
| 269 | str $s0,[$rounds,#0] |
| 270 | str $s1,[$rounds,#4] |
| 271 | str $s2,[$rounds,#8] |
| 272 | str $s3,[$rounds,#12] |
| 273 | #else |
| 274 | mov $t1,$s0,lsr#24 @ write output in endian-neutral |
| 275 | mov $t2,$s0,lsr#16 @ manner... |
| 276 | mov $t3,$s0,lsr#8 |
| 277 | strb $t1,[$rounds,#0] |
| 278 | strb $t2,[$rounds,#1] |
| 279 | mov $t1,$s1,lsr#24 |
| 280 | strb $t3,[$rounds,#2] |
| 281 | mov $t2,$s1,lsr#16 |
| 282 | strb $s0,[$rounds,#3] |
| 283 | mov $t3,$s1,lsr#8 |
| 284 | strb $t1,[$rounds,#4] |
| 285 | strb $t2,[$rounds,#5] |
| 286 | mov $t1,$s2,lsr#24 |
| 287 | strb $t3,[$rounds,#6] |
| 288 | mov $t2,$s2,lsr#16 |
| 289 | strb $s1,[$rounds,#7] |
| 290 | mov $t3,$s2,lsr#8 |
| 291 | strb $t1,[$rounds,#8] |
| 292 | strb $t2,[$rounds,#9] |
| 293 | mov $t1,$s3,lsr#24 |
| 294 | strb $t3,[$rounds,#10] |
| 295 | mov $t2,$s3,lsr#16 |
| 296 | strb $s2,[$rounds,#11] |
| 297 | mov $t3,$s3,lsr#8 |
| 298 | strb $t1,[$rounds,#12] |
| 299 | strb $t2,[$rounds,#13] |
| 300 | strb $t3,[$rounds,#14] |
| 301 | strb $s3,[$rounds,#15] |
| 302 | #endif |
| 303 | #if __ARM_ARCH__>=5 |
| 304 | ldmia sp!,{r4-r12,pc} |
| 305 | #else |
| 306 | ldmia sp!,{r4-r12,lr} |
| 307 | tst lr,#1 |
| 308 | moveq pc,lr @ be binary compatible with V4, yet |
| 309 | bx lr @ interoperable with Thumb ISA:-) |
| 310 | #endif |
| 311 | .size asm_AES_encrypt,.-asm_AES_encrypt |
| 312 | |
| 313 | .type _armv4_AES_encrypt,%function |
| 314 | .align 2 |
| 315 | _armv4_AES_encrypt: |
| 316 | str lr,[sp,#-4]! @ push lr |
| 317 | ldmia $key!,{$t1-$i1} |
| 318 | eor $s0,$s0,$t1 |
| 319 | ldr $rounds,[$key,#240-16] |
| 320 | eor $s1,$s1,$t2 |
| 321 | eor $s2,$s2,$t3 |
| 322 | eor $s3,$s3,$i1 |
| 323 | sub $rounds,$rounds,#1 |
| 324 | mov lr,#255 |
| 325 | |
| 326 | and $i1,lr,$s0 |
| 327 | and $i2,lr,$s0,lsr#8 |
| 328 | and $i3,lr,$s0,lsr#16 |
| 329 | mov $s0,$s0,lsr#24 |
| 330 | .Lenc_loop: |
| 331 | ldr $t1,[$tbl,$i1,lsl#2] @ Te3[s0>>0] |
| 332 | and $i1,lr,$s1,lsr#16 @ i0 |
| 333 | ldr $t2,[$tbl,$i2,lsl#2] @ Te2[s0>>8] |
| 334 | and $i2,lr,$s1 |
| 335 | ldr $t3,[$tbl,$i3,lsl#2] @ Te1[s0>>16] |
| 336 | and $i3,lr,$s1,lsr#8 |
| 337 | ldr $s0,[$tbl,$s0,lsl#2] @ Te0[s0>>24] |
| 338 | mov $s1,$s1,lsr#24 |
| 339 | |
| 340 | ldr $i1,[$tbl,$i1,lsl#2] @ Te1[s1>>16] |
| 341 | ldr $i2,[$tbl,$i2,lsl#2] @ Te3[s1>>0] |
| 342 | ldr $i3,[$tbl,$i3,lsl#2] @ Te2[s1>>8] |
| 343 | eor $s0,$s0,$i1,ror#8 |
| 344 | ldr $s1,[$tbl,$s1,lsl#2] @ Te0[s1>>24] |
| 345 | and $i1,lr,$s2,lsr#8 @ i0 |
| 346 | eor $t2,$t2,$i2,ror#8 |
| 347 | and $i2,lr,$s2,lsr#16 @ i1 |
| 348 | eor $t3,$t3,$i3,ror#8 |
| 349 | and $i3,lr,$s2 |
| 350 | ldr $i1,[$tbl,$i1,lsl#2] @ Te2[s2>>8] |
| 351 | eor $s1,$s1,$t1,ror#24 |
| 352 | ldr $i2,[$tbl,$i2,lsl#2] @ Te1[s2>>16] |
| 353 | mov $s2,$s2,lsr#24 |
| 354 | |
| 355 | ldr $i3,[$tbl,$i3,lsl#2] @ Te3[s2>>0] |
| 356 | eor $s0,$s0,$i1,ror#16 |
| 357 | ldr $s2,[$tbl,$s2,lsl#2] @ Te0[s2>>24] |
| 358 | and $i1,lr,$s3 @ i0 |
| 359 | eor $s1,$s1,$i2,ror#8 |
| 360 | and $i2,lr,$s3,lsr#8 @ i1 |
| 361 | eor $t3,$t3,$i3,ror#16 |
| 362 | and $i3,lr,$s3,lsr#16 @ i2 |
| 363 | ldr $i1,[$tbl,$i1,lsl#2] @ Te3[s3>>0] |
| 364 | eor $s2,$s2,$t2,ror#16 |
| 365 | ldr $i2,[$tbl,$i2,lsl#2] @ Te2[s3>>8] |
| 366 | mov $s3,$s3,lsr#24 |
| 367 | |
| 368 | ldr $i3,[$tbl,$i3,lsl#2] @ Te1[s3>>16] |
| 369 | eor $s0,$s0,$i1,ror#24 |
| 370 | ldr $i1,[$key],#16 |
| 371 | eor $s1,$s1,$i2,ror#16 |
| 372 | ldr $s3,[$tbl,$s3,lsl#2] @ Te0[s3>>24] |
| 373 | eor $s2,$s2,$i3,ror#8 |
| 374 | ldr $t1,[$key,#-12] |
| 375 | eor $s3,$s3,$t3,ror#8 |
| 376 | |
| 377 | ldr $t2,[$key,#-8] |
| 378 | eor $s0,$s0,$i1 |
| 379 | ldr $t3,[$key,#-4] |
| 380 | and $i1,lr,$s0 |
| 381 | eor $s1,$s1,$t1 |
| 382 | and $i2,lr,$s0,lsr#8 |
| 383 | eor $s2,$s2,$t2 |
| 384 | and $i3,lr,$s0,lsr#16 |
| 385 | eor $s3,$s3,$t3 |
| 386 | mov $s0,$s0,lsr#24 |
| 387 | |
| 388 | subs $rounds,$rounds,#1 |
| 389 | bne .Lenc_loop |
| 390 | |
| 391 | add $tbl,$tbl,#2 |
| 392 | |
| 393 | ldrb $t1,[$tbl,$i1,lsl#2] @ Te4[s0>>0] |
| 394 | and $i1,lr,$s1,lsr#16 @ i0 |
| 395 | ldrb $t2,[$tbl,$i2,lsl#2] @ Te4[s0>>8] |
| 396 | and $i2,lr,$s1 |
| 397 | ldrb $t3,[$tbl,$i3,lsl#2] @ Te4[s0>>16] |
| 398 | and $i3,lr,$s1,lsr#8 |
| 399 | ldrb $s0,[$tbl,$s0,lsl#2] @ Te4[s0>>24] |
| 400 | mov $s1,$s1,lsr#24 |
| 401 | |
| 402 | ldrb $i1,[$tbl,$i1,lsl#2] @ Te4[s1>>16] |
| 403 | ldrb $i2,[$tbl,$i2,lsl#2] @ Te4[s1>>0] |
| 404 | ldrb $i3,[$tbl,$i3,lsl#2] @ Te4[s1>>8] |
| 405 | eor $s0,$i1,$s0,lsl#8 |
| 406 | ldrb $s1,[$tbl,$s1,lsl#2] @ Te4[s1>>24] |
| 407 | and $i1,lr,$s2,lsr#8 @ i0 |
| 408 | eor $t2,$i2,$t2,lsl#8 |
| 409 | and $i2,lr,$s2,lsr#16 @ i1 |
| 410 | eor $t3,$i3,$t3,lsl#8 |
| 411 | and $i3,lr,$s2 |
| 412 | ldrb $i1,[$tbl,$i1,lsl#2] @ Te4[s2>>8] |
| 413 | eor $s1,$t1,$s1,lsl#24 |
| 414 | ldrb $i2,[$tbl,$i2,lsl#2] @ Te4[s2>>16] |
| 415 | mov $s2,$s2,lsr#24 |
| 416 | |
| 417 | ldrb $i3,[$tbl,$i3,lsl#2] @ Te4[s2>>0] |
| 418 | eor $s0,$i1,$s0,lsl#8 |
| 419 | ldrb $s2,[$tbl,$s2,lsl#2] @ Te4[s2>>24] |
| 420 | and $i1,lr,$s3 @ i0 |
| 421 | eor $s1,$s1,$i2,lsl#16 |
| 422 | and $i2,lr,$s3,lsr#8 @ i1 |
| 423 | eor $t3,$i3,$t3,lsl#8 |
| 424 | and $i3,lr,$s3,lsr#16 @ i2 |
| 425 | ldrb $i1,[$tbl,$i1,lsl#2] @ Te4[s3>>0] |
| 426 | eor $s2,$t2,$s2,lsl#24 |
| 427 | ldrb $i2,[$tbl,$i2,lsl#2] @ Te4[s3>>8] |
| 428 | mov $s3,$s3,lsr#24 |
| 429 | |
| 430 | ldrb $i3,[$tbl,$i3,lsl#2] @ Te4[s3>>16] |
| 431 | eor $s0,$i1,$s0,lsl#8 |
| 432 | ldr $i1,[$key,#0] |
| 433 | ldrb $s3,[$tbl,$s3,lsl#2] @ Te4[s3>>24] |
| 434 | eor $s1,$s1,$i2,lsl#8 |
| 435 | ldr $t1,[$key,#4] |
| 436 | eor $s2,$s2,$i3,lsl#16 |
| 437 | ldr $t2,[$key,#8] |
| 438 | eor $s3,$t3,$s3,lsl#24 |
| 439 | ldr $t3,[$key,#12] |
| 440 | |
| 441 | eor $s0,$s0,$i1 |
| 442 | eor $s1,$s1,$t1 |
| 443 | eor $s2,$s2,$t2 |
| 444 | eor $s3,$s3,$t3 |
| 445 | |
| 446 | sub $tbl,$tbl,#2 |
| 447 | ldr pc,[sp],#4 @ pop and return |
| 448 | .size _armv4_AES_encrypt,.-_armv4_AES_encrypt |
| 449 | |
| 450 | .global asm_AES_set_encrypt_key |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 451 | .type asm_AES_set_encrypt_key,%function |
| 452 | .align 5 |
| 453 | asm_AES_set_encrypt_key: |
| 454 | _armv4_AES_set_encrypt_key: |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 455 | #ifndef __thumb2__ |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 456 | sub r3,pc,#8 @ asm_AES_set_encrypt_key |
| 457 | #else |
Robert Sloan | d5c2215 | 2017-11-13 09:22:12 -0800 | [diff] [blame] | 458 | adr r3,. |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 459 | #endif |
| 460 | teq r0,#0 |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 461 | #ifdef __thumb2__ |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 462 | itt eq @ Thumb2 thing, sanity check in ARM |
| 463 | #endif |
| 464 | moveq r0,#-1 |
| 465 | beq .Labrt |
| 466 | teq r2,#0 |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 467 | #ifdef __thumb2__ |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 468 | itt eq @ Thumb2 thing, sanity check in ARM |
| 469 | #endif |
| 470 | moveq r0,#-1 |
| 471 | beq .Labrt |
| 472 | |
| 473 | teq r1,#128 |
| 474 | beq .Lok |
| 475 | teq r1,#192 |
| 476 | beq .Lok |
| 477 | teq r1,#256 |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 478 | #ifdef __thumb2__ |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 479 | itt ne @ Thumb2 thing, sanity check in ARM |
| 480 | #endif |
| 481 | movne r0,#-1 |
| 482 | bne .Labrt |
| 483 | |
| 484 | .Lok: stmdb sp!,{r4-r12,lr} |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 485 | mov $rounds,r0 @ inp |
| 486 | mov lr,r1 @ bits |
| 487 | mov $key,r2 @ key |
| 488 | |
Robert Sloan | ab8b888 | 2018-03-26 11:39:51 -0700 | [diff] [blame^] | 489 | #if defined(__thumb2__) || defined(__APPLE__) |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 490 | adr $tbl,AES_Te+1024 @ Te4 |
| 491 | #else |
| 492 | sub $tbl,r3,#_armv4_AES_set_encrypt_key-AES_Te-1024 @ Te4 |
| 493 | #endif |
| 494 | |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 495 | #if __ARM_ARCH__<7 |
| 496 | ldrb $s0,[$rounds,#3] @ load input data in endian-neutral |
| 497 | ldrb $t1,[$rounds,#2] @ manner... |
| 498 | ldrb $t2,[$rounds,#1] |
| 499 | ldrb $t3,[$rounds,#0] |
| 500 | orr $s0,$s0,$t1,lsl#8 |
| 501 | ldrb $s1,[$rounds,#7] |
| 502 | orr $s0,$s0,$t2,lsl#16 |
| 503 | ldrb $t1,[$rounds,#6] |
| 504 | orr $s0,$s0,$t3,lsl#24 |
| 505 | ldrb $t2,[$rounds,#5] |
| 506 | ldrb $t3,[$rounds,#4] |
| 507 | orr $s1,$s1,$t1,lsl#8 |
| 508 | ldrb $s2,[$rounds,#11] |
| 509 | orr $s1,$s1,$t2,lsl#16 |
| 510 | ldrb $t1,[$rounds,#10] |
| 511 | orr $s1,$s1,$t3,lsl#24 |
| 512 | ldrb $t2,[$rounds,#9] |
| 513 | ldrb $t3,[$rounds,#8] |
| 514 | orr $s2,$s2,$t1,lsl#8 |
| 515 | ldrb $s3,[$rounds,#15] |
| 516 | orr $s2,$s2,$t2,lsl#16 |
| 517 | ldrb $t1,[$rounds,#14] |
| 518 | orr $s2,$s2,$t3,lsl#24 |
| 519 | ldrb $t2,[$rounds,#13] |
| 520 | ldrb $t3,[$rounds,#12] |
| 521 | orr $s3,$s3,$t1,lsl#8 |
| 522 | str $s0,[$key],#16 |
| 523 | orr $s3,$s3,$t2,lsl#16 |
| 524 | str $s1,[$key,#-12] |
| 525 | orr $s3,$s3,$t3,lsl#24 |
| 526 | str $s2,[$key,#-8] |
| 527 | str $s3,[$key,#-4] |
| 528 | #else |
| 529 | ldr $s0,[$rounds,#0] |
| 530 | ldr $s1,[$rounds,#4] |
| 531 | ldr $s2,[$rounds,#8] |
| 532 | ldr $s3,[$rounds,#12] |
| 533 | #ifdef __ARMEL__ |
| 534 | rev $s0,$s0 |
| 535 | rev $s1,$s1 |
| 536 | rev $s2,$s2 |
| 537 | rev $s3,$s3 |
| 538 | #endif |
| 539 | str $s0,[$key],#16 |
| 540 | str $s1,[$key,#-12] |
| 541 | str $s2,[$key,#-8] |
| 542 | str $s3,[$key,#-4] |
| 543 | #endif |
| 544 | |
| 545 | teq lr,#128 |
| 546 | bne .Lnot128 |
| 547 | mov $rounds,#10 |
| 548 | str $rounds,[$key,#240-16] |
| 549 | add $t3,$tbl,#256 @ rcon |
| 550 | mov lr,#255 |
| 551 | |
| 552 | .L128_loop: |
| 553 | and $t2,lr,$s3,lsr#24 |
| 554 | and $i1,lr,$s3,lsr#16 |
| 555 | ldrb $t2,[$tbl,$t2] |
| 556 | and $i2,lr,$s3,lsr#8 |
| 557 | ldrb $i1,[$tbl,$i1] |
| 558 | and $i3,lr,$s3 |
| 559 | ldrb $i2,[$tbl,$i2] |
| 560 | orr $t2,$t2,$i1,lsl#24 |
| 561 | ldrb $i3,[$tbl,$i3] |
| 562 | orr $t2,$t2,$i2,lsl#16 |
| 563 | ldr $t1,[$t3],#4 @ rcon[i++] |
| 564 | orr $t2,$t2,$i3,lsl#8 |
| 565 | eor $t2,$t2,$t1 |
| 566 | eor $s0,$s0,$t2 @ rk[4]=rk[0]^... |
| 567 | eor $s1,$s1,$s0 @ rk[5]=rk[1]^rk[4] |
| 568 | str $s0,[$key],#16 |
| 569 | eor $s2,$s2,$s1 @ rk[6]=rk[2]^rk[5] |
| 570 | str $s1,[$key,#-12] |
| 571 | eor $s3,$s3,$s2 @ rk[7]=rk[3]^rk[6] |
| 572 | str $s2,[$key,#-8] |
| 573 | subs $rounds,$rounds,#1 |
| 574 | str $s3,[$key,#-4] |
| 575 | bne .L128_loop |
| 576 | sub r2,$key,#176 |
| 577 | b .Ldone |
| 578 | |
| 579 | .Lnot128: |
| 580 | #if __ARM_ARCH__<7 |
| 581 | ldrb $i2,[$rounds,#19] |
| 582 | ldrb $t1,[$rounds,#18] |
| 583 | ldrb $t2,[$rounds,#17] |
| 584 | ldrb $t3,[$rounds,#16] |
| 585 | orr $i2,$i2,$t1,lsl#8 |
| 586 | ldrb $i3,[$rounds,#23] |
| 587 | orr $i2,$i2,$t2,lsl#16 |
| 588 | ldrb $t1,[$rounds,#22] |
| 589 | orr $i2,$i2,$t3,lsl#24 |
| 590 | ldrb $t2,[$rounds,#21] |
| 591 | ldrb $t3,[$rounds,#20] |
| 592 | orr $i3,$i3,$t1,lsl#8 |
| 593 | orr $i3,$i3,$t2,lsl#16 |
| 594 | str $i2,[$key],#8 |
| 595 | orr $i3,$i3,$t3,lsl#24 |
| 596 | str $i3,[$key,#-4] |
| 597 | #else |
| 598 | ldr $i2,[$rounds,#16] |
| 599 | ldr $i3,[$rounds,#20] |
| 600 | #ifdef __ARMEL__ |
| 601 | rev $i2,$i2 |
| 602 | rev $i3,$i3 |
| 603 | #endif |
| 604 | str $i2,[$key],#8 |
| 605 | str $i3,[$key,#-4] |
| 606 | #endif |
| 607 | |
| 608 | teq lr,#192 |
| 609 | bne .Lnot192 |
| 610 | mov $rounds,#12 |
| 611 | str $rounds,[$key,#240-24] |
| 612 | add $t3,$tbl,#256 @ rcon |
| 613 | mov lr,#255 |
| 614 | mov $rounds,#8 |
| 615 | |
| 616 | .L192_loop: |
| 617 | and $t2,lr,$i3,lsr#24 |
| 618 | and $i1,lr,$i3,lsr#16 |
| 619 | ldrb $t2,[$tbl,$t2] |
| 620 | and $i2,lr,$i3,lsr#8 |
| 621 | ldrb $i1,[$tbl,$i1] |
| 622 | and $i3,lr,$i3 |
| 623 | ldrb $i2,[$tbl,$i2] |
| 624 | orr $t2,$t2,$i1,lsl#24 |
| 625 | ldrb $i3,[$tbl,$i3] |
| 626 | orr $t2,$t2,$i2,lsl#16 |
| 627 | ldr $t1,[$t3],#4 @ rcon[i++] |
| 628 | orr $t2,$t2,$i3,lsl#8 |
| 629 | eor $i3,$t2,$t1 |
| 630 | eor $s0,$s0,$i3 @ rk[6]=rk[0]^... |
| 631 | eor $s1,$s1,$s0 @ rk[7]=rk[1]^rk[6] |
| 632 | str $s0,[$key],#24 |
| 633 | eor $s2,$s2,$s1 @ rk[8]=rk[2]^rk[7] |
| 634 | str $s1,[$key,#-20] |
| 635 | eor $s3,$s3,$s2 @ rk[9]=rk[3]^rk[8] |
| 636 | str $s2,[$key,#-16] |
| 637 | subs $rounds,$rounds,#1 |
| 638 | str $s3,[$key,#-12] |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 639 | #ifdef __thumb2__ |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 640 | itt eq @ Thumb2 thing, sanity check in ARM |
| 641 | #endif |
| 642 | subeq r2,$key,#216 |
| 643 | beq .Ldone |
| 644 | |
| 645 | ldr $i1,[$key,#-32] |
| 646 | ldr $i2,[$key,#-28] |
| 647 | eor $i1,$i1,$s3 @ rk[10]=rk[4]^rk[9] |
| 648 | eor $i3,$i2,$i1 @ rk[11]=rk[5]^rk[10] |
| 649 | str $i1,[$key,#-8] |
| 650 | str $i3,[$key,#-4] |
| 651 | b .L192_loop |
| 652 | |
| 653 | .Lnot192: |
| 654 | #if __ARM_ARCH__<7 |
| 655 | ldrb $i2,[$rounds,#27] |
| 656 | ldrb $t1,[$rounds,#26] |
| 657 | ldrb $t2,[$rounds,#25] |
| 658 | ldrb $t3,[$rounds,#24] |
| 659 | orr $i2,$i2,$t1,lsl#8 |
| 660 | ldrb $i3,[$rounds,#31] |
| 661 | orr $i2,$i2,$t2,lsl#16 |
| 662 | ldrb $t1,[$rounds,#30] |
| 663 | orr $i2,$i2,$t3,lsl#24 |
| 664 | ldrb $t2,[$rounds,#29] |
| 665 | ldrb $t3,[$rounds,#28] |
| 666 | orr $i3,$i3,$t1,lsl#8 |
| 667 | orr $i3,$i3,$t2,lsl#16 |
| 668 | str $i2,[$key],#8 |
| 669 | orr $i3,$i3,$t3,lsl#24 |
| 670 | str $i3,[$key,#-4] |
| 671 | #else |
| 672 | ldr $i2,[$rounds,#24] |
| 673 | ldr $i3,[$rounds,#28] |
| 674 | #ifdef __ARMEL__ |
| 675 | rev $i2,$i2 |
| 676 | rev $i3,$i3 |
| 677 | #endif |
| 678 | str $i2,[$key],#8 |
| 679 | str $i3,[$key,#-4] |
| 680 | #endif |
| 681 | |
| 682 | mov $rounds,#14 |
| 683 | str $rounds,[$key,#240-32] |
| 684 | add $t3,$tbl,#256 @ rcon |
| 685 | mov lr,#255 |
| 686 | mov $rounds,#7 |
| 687 | |
| 688 | .L256_loop: |
| 689 | and $t2,lr,$i3,lsr#24 |
| 690 | and $i1,lr,$i3,lsr#16 |
| 691 | ldrb $t2,[$tbl,$t2] |
| 692 | and $i2,lr,$i3,lsr#8 |
| 693 | ldrb $i1,[$tbl,$i1] |
| 694 | and $i3,lr,$i3 |
| 695 | ldrb $i2,[$tbl,$i2] |
| 696 | orr $t2,$t2,$i1,lsl#24 |
| 697 | ldrb $i3,[$tbl,$i3] |
| 698 | orr $t2,$t2,$i2,lsl#16 |
| 699 | ldr $t1,[$t3],#4 @ rcon[i++] |
| 700 | orr $t2,$t2,$i3,lsl#8 |
| 701 | eor $i3,$t2,$t1 |
| 702 | eor $s0,$s0,$i3 @ rk[8]=rk[0]^... |
| 703 | eor $s1,$s1,$s0 @ rk[9]=rk[1]^rk[8] |
| 704 | str $s0,[$key],#32 |
| 705 | eor $s2,$s2,$s1 @ rk[10]=rk[2]^rk[9] |
| 706 | str $s1,[$key,#-28] |
| 707 | eor $s3,$s3,$s2 @ rk[11]=rk[3]^rk[10] |
| 708 | str $s2,[$key,#-24] |
| 709 | subs $rounds,$rounds,#1 |
| 710 | str $s3,[$key,#-20] |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 711 | #ifdef __thumb2__ |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 712 | itt eq @ Thumb2 thing, sanity check in ARM |
| 713 | #endif |
| 714 | subeq r2,$key,#256 |
| 715 | beq .Ldone |
| 716 | |
| 717 | and $t2,lr,$s3 |
| 718 | and $i1,lr,$s3,lsr#8 |
| 719 | ldrb $t2,[$tbl,$t2] |
| 720 | and $i2,lr,$s3,lsr#16 |
| 721 | ldrb $i1,[$tbl,$i1] |
| 722 | and $i3,lr,$s3,lsr#24 |
| 723 | ldrb $i2,[$tbl,$i2] |
| 724 | orr $t2,$t2,$i1,lsl#8 |
| 725 | ldrb $i3,[$tbl,$i3] |
| 726 | orr $t2,$t2,$i2,lsl#16 |
| 727 | ldr $t1,[$key,#-48] |
| 728 | orr $t2,$t2,$i3,lsl#24 |
| 729 | |
| 730 | ldr $i1,[$key,#-44] |
| 731 | ldr $i2,[$key,#-40] |
| 732 | eor $t1,$t1,$t2 @ rk[12]=rk[4]^... |
| 733 | ldr $i3,[$key,#-36] |
| 734 | eor $i1,$i1,$t1 @ rk[13]=rk[5]^rk[12] |
| 735 | str $t1,[$key,#-16] |
| 736 | eor $i2,$i2,$i1 @ rk[14]=rk[6]^rk[13] |
| 737 | str $i1,[$key,#-12] |
| 738 | eor $i3,$i3,$i2 @ rk[15]=rk[7]^rk[14] |
| 739 | str $i2,[$key,#-8] |
| 740 | str $i3,[$key,#-4] |
| 741 | b .L256_loop |
| 742 | |
| 743 | .align 2 |
| 744 | .Ldone: mov r0,#0 |
| 745 | ldmia sp!,{r4-r12,lr} |
| 746 | .Labrt: |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 747 | #if __ARM_ARCH__>=5 |
| 748 | ret @ bx lr |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 749 | #else |
| 750 | tst lr,#1 |
| 751 | moveq pc,lr @ be binary compatible with V4, yet |
| 752 | bx lr @ interoperable with Thumb ISA:-) |
| 753 | #endif |
| 754 | .size asm_AES_set_encrypt_key,.-asm_AES_set_encrypt_key |
| 755 | |
| 756 | .global asm_AES_set_decrypt_key |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 757 | .type asm_AES_set_decrypt_key,%function |
| 758 | .align 5 |
| 759 | asm_AES_set_decrypt_key: |
| 760 | str lr,[sp,#-4]! @ push lr |
| 761 | bl _armv4_AES_set_encrypt_key |
| 762 | teq r0,#0 |
| 763 | ldr lr,[sp],#4 @ pop lr |
| 764 | bne .Labrt |
| 765 | |
| 766 | mov r0,r2 @ asm_AES_set_encrypt_key preserves r2, |
| 767 | mov r1,r2 @ which is AES_KEY *key |
| 768 | b _armv4_AES_set_enc2dec_key |
| 769 | .size asm_AES_set_decrypt_key,.-asm_AES_set_decrypt_key |
| 770 | |
| 771 | @ void AES_set_enc2dec_key(const AES_KEY *inp,AES_KEY *out) |
| 772 | .global AES_set_enc2dec_key |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 773 | .type AES_set_enc2dec_key,%function |
| 774 | .align 5 |
| 775 | AES_set_enc2dec_key: |
| 776 | _armv4_AES_set_enc2dec_key: |
| 777 | stmdb sp!,{r4-r12,lr} |
| 778 | |
| 779 | ldr $rounds,[r0,#240] |
| 780 | mov $i1,r0 @ input |
| 781 | add $i2,r0,$rounds,lsl#4 |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 782 | mov $key,r1 @ output |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 783 | add $tbl,r1,$rounds,lsl#4 |
| 784 | str $rounds,[r1,#240] |
| 785 | |
| 786 | .Linv: ldr $s0,[$i1],#16 |
| 787 | ldr $s1,[$i1,#-12] |
| 788 | ldr $s2,[$i1,#-8] |
| 789 | ldr $s3,[$i1,#-4] |
| 790 | ldr $t1,[$i2],#-16 |
| 791 | ldr $t2,[$i2,#16+4] |
| 792 | ldr $t3,[$i2,#16+8] |
| 793 | ldr $i3,[$i2,#16+12] |
| 794 | str $s0,[$tbl],#-16 |
| 795 | str $s1,[$tbl,#16+4] |
| 796 | str $s2,[$tbl,#16+8] |
| 797 | str $s3,[$tbl,#16+12] |
| 798 | str $t1,[$key],#16 |
| 799 | str $t2,[$key,#-12] |
| 800 | str $t3,[$key,#-8] |
| 801 | str $i3,[$key,#-4] |
| 802 | teq $i1,$i2 |
| 803 | bne .Linv |
| 804 | |
| 805 | ldr $s0,[$i1] |
| 806 | ldr $s1,[$i1,#4] |
| 807 | ldr $s2,[$i1,#8] |
| 808 | ldr $s3,[$i1,#12] |
| 809 | str $s0,[$key] |
| 810 | str $s1,[$key,#4] |
| 811 | str $s2,[$key,#8] |
| 812 | str $s3,[$key,#12] |
| 813 | sub $key,$key,$rounds,lsl#3 |
| 814 | ___ |
| 815 | $mask80=$i1; |
| 816 | $mask1b=$i2; |
| 817 | $mask7f=$i3; |
| 818 | $code.=<<___; |
| 819 | ldr $s0,[$key,#16]! @ prefetch tp1 |
| 820 | mov $mask80,#0x80 |
| 821 | mov $mask1b,#0x1b |
| 822 | orr $mask80,$mask80,#0x8000 |
| 823 | orr $mask1b,$mask1b,#0x1b00 |
| 824 | orr $mask80,$mask80,$mask80,lsl#16 |
| 825 | orr $mask1b,$mask1b,$mask1b,lsl#16 |
| 826 | sub $rounds,$rounds,#1 |
| 827 | mvn $mask7f,$mask80 |
| 828 | mov $rounds,$rounds,lsl#2 @ (rounds-1)*4 |
| 829 | |
| 830 | .Lmix: and $t1,$s0,$mask80 |
| 831 | and $s1,$s0,$mask7f |
| 832 | sub $t1,$t1,$t1,lsr#7 |
| 833 | and $t1,$t1,$mask1b |
| 834 | eor $s1,$t1,$s1,lsl#1 @ tp2 |
| 835 | |
| 836 | and $t1,$s1,$mask80 |
| 837 | and $s2,$s1,$mask7f |
| 838 | sub $t1,$t1,$t1,lsr#7 |
| 839 | and $t1,$t1,$mask1b |
| 840 | eor $s2,$t1,$s2,lsl#1 @ tp4 |
| 841 | |
| 842 | and $t1,$s2,$mask80 |
| 843 | and $s3,$s2,$mask7f |
| 844 | sub $t1,$t1,$t1,lsr#7 |
| 845 | and $t1,$t1,$mask1b |
| 846 | eor $s3,$t1,$s3,lsl#1 @ tp8 |
| 847 | |
| 848 | eor $t1,$s1,$s2 |
| 849 | eor $t2,$s0,$s3 @ tp9 |
| 850 | eor $t1,$t1,$s3 @ tpe |
| 851 | eor $t1,$t1,$s1,ror#24 |
| 852 | eor $t1,$t1,$t2,ror#24 @ ^= ROTATE(tpb=tp9^tp2,8) |
| 853 | eor $t1,$t1,$s2,ror#16 |
| 854 | eor $t1,$t1,$t2,ror#16 @ ^= ROTATE(tpd=tp9^tp4,16) |
| 855 | eor $t1,$t1,$t2,ror#8 @ ^= ROTATE(tp9,24) |
| 856 | |
| 857 | ldr $s0,[$key,#4] @ prefetch tp1 |
| 858 | str $t1,[$key],#4 |
| 859 | subs $rounds,$rounds,#1 |
| 860 | bne .Lmix |
| 861 | |
| 862 | mov r0,#0 |
| 863 | #if __ARM_ARCH__>=5 |
| 864 | ldmia sp!,{r4-r12,pc} |
| 865 | #else |
| 866 | ldmia sp!,{r4-r12,lr} |
| 867 | tst lr,#1 |
| 868 | moveq pc,lr @ be binary compatible with V4, yet |
| 869 | bx lr @ interoperable with Thumb ISA:-) |
| 870 | #endif |
| 871 | .size AES_set_enc2dec_key,.-AES_set_enc2dec_key |
| 872 | |
| 873 | .type AES_Td,%object |
| 874 | .align 5 |
| 875 | AES_Td: |
| 876 | .word 0x51f4a750, 0x7e416553, 0x1a17a4c3, 0x3a275e96 |
| 877 | .word 0x3bab6bcb, 0x1f9d45f1, 0xacfa58ab, 0x4be30393 |
| 878 | .word 0x2030fa55, 0xad766df6, 0x88cc7691, 0xf5024c25 |
| 879 | .word 0x4fe5d7fc, 0xc52acbd7, 0x26354480, 0xb562a38f |
| 880 | .word 0xdeb15a49, 0x25ba1b67, 0x45ea0e98, 0x5dfec0e1 |
| 881 | .word 0xc32f7502, 0x814cf012, 0x8d4697a3, 0x6bd3f9c6 |
| 882 | .word 0x038f5fe7, 0x15929c95, 0xbf6d7aeb, 0x955259da |
| 883 | .word 0xd4be832d, 0x587421d3, 0x49e06929, 0x8ec9c844 |
| 884 | .word 0x75c2896a, 0xf48e7978, 0x99583e6b, 0x27b971dd |
| 885 | .word 0xbee14fb6, 0xf088ad17, 0xc920ac66, 0x7dce3ab4 |
| 886 | .word 0x63df4a18, 0xe51a3182, 0x97513360, 0x62537f45 |
| 887 | .word 0xb16477e0, 0xbb6bae84, 0xfe81a01c, 0xf9082b94 |
| 888 | .word 0x70486858, 0x8f45fd19, 0x94de6c87, 0x527bf8b7 |
| 889 | .word 0xab73d323, 0x724b02e2, 0xe31f8f57, 0x6655ab2a |
| 890 | .word 0xb2eb2807, 0x2fb5c203, 0x86c57b9a, 0xd33708a5 |
| 891 | .word 0x302887f2, 0x23bfa5b2, 0x02036aba, 0xed16825c |
| 892 | .word 0x8acf1c2b, 0xa779b492, 0xf307f2f0, 0x4e69e2a1 |
| 893 | .word 0x65daf4cd, 0x0605bed5, 0xd134621f, 0xc4a6fe8a |
| 894 | .word 0x342e539d, 0xa2f355a0, 0x058ae132, 0xa4f6eb75 |
| 895 | .word 0x0b83ec39, 0x4060efaa, 0x5e719f06, 0xbd6e1051 |
| 896 | .word 0x3e218af9, 0x96dd063d, 0xdd3e05ae, 0x4de6bd46 |
| 897 | .word 0x91548db5, 0x71c45d05, 0x0406d46f, 0x605015ff |
| 898 | .word 0x1998fb24, 0xd6bde997, 0x894043cc, 0x67d99e77 |
| 899 | .word 0xb0e842bd, 0x07898b88, 0xe7195b38, 0x79c8eedb |
| 900 | .word 0xa17c0a47, 0x7c420fe9, 0xf8841ec9, 0x00000000 |
| 901 | .word 0x09808683, 0x322bed48, 0x1e1170ac, 0x6c5a724e |
| 902 | .word 0xfd0efffb, 0x0f853856, 0x3daed51e, 0x362d3927 |
| 903 | .word 0x0a0fd964, 0x685ca621, 0x9b5b54d1, 0x24362e3a |
| 904 | .word 0x0c0a67b1, 0x9357e70f, 0xb4ee96d2, 0x1b9b919e |
| 905 | .word 0x80c0c54f, 0x61dc20a2, 0x5a774b69, 0x1c121a16 |
| 906 | .word 0xe293ba0a, 0xc0a02ae5, 0x3c22e043, 0x121b171d |
| 907 | .word 0x0e090d0b, 0xf28bc7ad, 0x2db6a8b9, 0x141ea9c8 |
| 908 | .word 0x57f11985, 0xaf75074c, 0xee99ddbb, 0xa37f60fd |
| 909 | .word 0xf701269f, 0x5c72f5bc, 0x44663bc5, 0x5bfb7e34 |
| 910 | .word 0x8b432976, 0xcb23c6dc, 0xb6edfc68, 0xb8e4f163 |
| 911 | .word 0xd731dcca, 0x42638510, 0x13972240, 0x84c61120 |
| 912 | .word 0x854a247d, 0xd2bb3df8, 0xaef93211, 0xc729a16d |
| 913 | .word 0x1d9e2f4b, 0xdcb230f3, 0x0d8652ec, 0x77c1e3d0 |
| 914 | .word 0x2bb3166c, 0xa970b999, 0x119448fa, 0x47e96422 |
| 915 | .word 0xa8fc8cc4, 0xa0f03f1a, 0x567d2cd8, 0x223390ef |
| 916 | .word 0x87494ec7, 0xd938d1c1, 0x8ccaa2fe, 0x98d40b36 |
| 917 | .word 0xa6f581cf, 0xa57ade28, 0xdab78e26, 0x3fadbfa4 |
| 918 | .word 0x2c3a9de4, 0x5078920d, 0x6a5fcc9b, 0x547e4662 |
| 919 | .word 0xf68d13c2, 0x90d8b8e8, 0x2e39f75e, 0x82c3aff5 |
| 920 | .word 0x9f5d80be, 0x69d0937c, 0x6fd52da9, 0xcf2512b3 |
| 921 | .word 0xc8ac993b, 0x10187da7, 0xe89c636e, 0xdb3bbb7b |
| 922 | .word 0xcd267809, 0x6e5918f4, 0xec9ab701, 0x834f9aa8 |
| 923 | .word 0xe6956e65, 0xaaffe67e, 0x21bccf08, 0xef15e8e6 |
| 924 | .word 0xbae79bd9, 0x4a6f36ce, 0xea9f09d4, 0x29b07cd6 |
| 925 | .word 0x31a4b2af, 0x2a3f2331, 0xc6a59430, 0x35a266c0 |
| 926 | .word 0x744ebc37, 0xfc82caa6, 0xe090d0b0, 0x33a7d815 |
| 927 | .word 0xf104984a, 0x41ecdaf7, 0x7fcd500e, 0x1791f62f |
| 928 | .word 0x764dd68d, 0x43efb04d, 0xccaa4d54, 0xe49604df |
| 929 | .word 0x9ed1b5e3, 0x4c6a881b, 0xc12c1fb8, 0x4665517f |
| 930 | .word 0x9d5eea04, 0x018c355d, 0xfa877473, 0xfb0b412e |
| 931 | .word 0xb3671d5a, 0x92dbd252, 0xe9105633, 0x6dd64713 |
| 932 | .word 0x9ad7618c, 0x37a10c7a, 0x59f8148e, 0xeb133c89 |
| 933 | .word 0xcea927ee, 0xb761c935, 0xe11ce5ed, 0x7a47b13c |
| 934 | .word 0x9cd2df59, 0x55f2733f, 0x1814ce79, 0x73c737bf |
| 935 | .word 0x53f7cdea, 0x5ffdaa5b, 0xdf3d6f14, 0x7844db86 |
| 936 | .word 0xcaaff381, 0xb968c43e, 0x3824342c, 0xc2a3405f |
| 937 | .word 0x161dc372, 0xbce2250c, 0x283c498b, 0xff0d9541 |
| 938 | .word 0x39a80171, 0x080cb3de, 0xd8b4e49c, 0x6456c190 |
| 939 | .word 0x7bcb8461, 0xd532b670, 0x486c5c74, 0xd0b85742 |
| 940 | @ Td4[256] |
| 941 | .byte 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38 |
| 942 | .byte 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb |
| 943 | .byte 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87 |
| 944 | .byte 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb |
| 945 | .byte 0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d |
| 946 | .byte 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e |
| 947 | .byte 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2 |
| 948 | .byte 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25 |
| 949 | .byte 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16 |
| 950 | .byte 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92 |
| 951 | .byte 0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda |
| 952 | .byte 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84 |
| 953 | .byte 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a |
| 954 | .byte 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06 |
| 955 | .byte 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02 |
| 956 | .byte 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b |
| 957 | .byte 0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea |
| 958 | .byte 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73 |
| 959 | .byte 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85 |
| 960 | .byte 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e |
| 961 | .byte 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89 |
| 962 | .byte 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b |
| 963 | .byte 0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20 |
| 964 | .byte 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4 |
| 965 | .byte 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31 |
| 966 | .byte 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f |
| 967 | .byte 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d |
| 968 | .byte 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef |
| 969 | .byte 0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0 |
| 970 | .byte 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61 |
| 971 | .byte 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26 |
| 972 | .byte 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d |
| 973 | .size AES_Td,.-AES_Td |
| 974 | |
| 975 | @ void asm_AES_decrypt(const unsigned char *in, unsigned char *out, |
| 976 | @ const AES_KEY *key) { |
| 977 | .global asm_AES_decrypt |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 978 | .type asm_AES_decrypt,%function |
| 979 | .align 5 |
| 980 | asm_AES_decrypt: |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 981 | #ifndef __thumb2__ |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 982 | sub r3,pc,#8 @ asm_AES_decrypt |
| 983 | #else |
Robert Sloan | d5c2215 | 2017-11-13 09:22:12 -0800 | [diff] [blame] | 984 | adr r3,. |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 985 | #endif |
| 986 | stmdb sp!,{r1,r4-r12,lr} |
Robert Sloan | ab8b888 | 2018-03-26 11:39:51 -0700 | [diff] [blame^] | 987 | #if defined(__thumb2__) || defined(__APPLE__) |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 988 | adr $tbl,AES_Td |
| 989 | #else |
| 990 | sub $tbl,r3,#asm_AES_decrypt-AES_Td @ Td |
| 991 | #endif |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 992 | mov $rounds,r0 @ inp |
| 993 | mov $key,r2 |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 994 | #if __ARM_ARCH__<7 |
| 995 | ldrb $s0,[$rounds,#3] @ load input data in endian-neutral |
| 996 | ldrb $t1,[$rounds,#2] @ manner... |
| 997 | ldrb $t2,[$rounds,#1] |
| 998 | ldrb $t3,[$rounds,#0] |
| 999 | orr $s0,$s0,$t1,lsl#8 |
| 1000 | ldrb $s1,[$rounds,#7] |
| 1001 | orr $s0,$s0,$t2,lsl#16 |
| 1002 | ldrb $t1,[$rounds,#6] |
| 1003 | orr $s0,$s0,$t3,lsl#24 |
| 1004 | ldrb $t2,[$rounds,#5] |
| 1005 | ldrb $t3,[$rounds,#4] |
| 1006 | orr $s1,$s1,$t1,lsl#8 |
| 1007 | ldrb $s2,[$rounds,#11] |
| 1008 | orr $s1,$s1,$t2,lsl#16 |
| 1009 | ldrb $t1,[$rounds,#10] |
| 1010 | orr $s1,$s1,$t3,lsl#24 |
| 1011 | ldrb $t2,[$rounds,#9] |
| 1012 | ldrb $t3,[$rounds,#8] |
| 1013 | orr $s2,$s2,$t1,lsl#8 |
| 1014 | ldrb $s3,[$rounds,#15] |
| 1015 | orr $s2,$s2,$t2,lsl#16 |
| 1016 | ldrb $t1,[$rounds,#14] |
| 1017 | orr $s2,$s2,$t3,lsl#24 |
| 1018 | ldrb $t2,[$rounds,#13] |
| 1019 | ldrb $t3,[$rounds,#12] |
| 1020 | orr $s3,$s3,$t1,lsl#8 |
| 1021 | orr $s3,$s3,$t2,lsl#16 |
| 1022 | orr $s3,$s3,$t3,lsl#24 |
| 1023 | #else |
| 1024 | ldr $s0,[$rounds,#0] |
| 1025 | ldr $s1,[$rounds,#4] |
| 1026 | ldr $s2,[$rounds,#8] |
| 1027 | ldr $s3,[$rounds,#12] |
| 1028 | #ifdef __ARMEL__ |
| 1029 | rev $s0,$s0 |
| 1030 | rev $s1,$s1 |
| 1031 | rev $s2,$s2 |
| 1032 | rev $s3,$s3 |
| 1033 | #endif |
| 1034 | #endif |
| 1035 | bl _armv4_AES_decrypt |
| 1036 | |
| 1037 | ldr $rounds,[sp],#4 @ pop out |
| 1038 | #if __ARM_ARCH__>=7 |
| 1039 | #ifdef __ARMEL__ |
| 1040 | rev $s0,$s0 |
| 1041 | rev $s1,$s1 |
| 1042 | rev $s2,$s2 |
| 1043 | rev $s3,$s3 |
| 1044 | #endif |
| 1045 | str $s0,[$rounds,#0] |
| 1046 | str $s1,[$rounds,#4] |
| 1047 | str $s2,[$rounds,#8] |
| 1048 | str $s3,[$rounds,#12] |
| 1049 | #else |
| 1050 | mov $t1,$s0,lsr#24 @ write output in endian-neutral |
| 1051 | mov $t2,$s0,lsr#16 @ manner... |
| 1052 | mov $t3,$s0,lsr#8 |
| 1053 | strb $t1,[$rounds,#0] |
| 1054 | strb $t2,[$rounds,#1] |
| 1055 | mov $t1,$s1,lsr#24 |
| 1056 | strb $t3,[$rounds,#2] |
| 1057 | mov $t2,$s1,lsr#16 |
| 1058 | strb $s0,[$rounds,#3] |
| 1059 | mov $t3,$s1,lsr#8 |
| 1060 | strb $t1,[$rounds,#4] |
| 1061 | strb $t2,[$rounds,#5] |
| 1062 | mov $t1,$s2,lsr#24 |
| 1063 | strb $t3,[$rounds,#6] |
| 1064 | mov $t2,$s2,lsr#16 |
| 1065 | strb $s1,[$rounds,#7] |
| 1066 | mov $t3,$s2,lsr#8 |
| 1067 | strb $t1,[$rounds,#8] |
| 1068 | strb $t2,[$rounds,#9] |
| 1069 | mov $t1,$s3,lsr#24 |
| 1070 | strb $t3,[$rounds,#10] |
| 1071 | mov $t2,$s3,lsr#16 |
| 1072 | strb $s2,[$rounds,#11] |
| 1073 | mov $t3,$s3,lsr#8 |
| 1074 | strb $t1,[$rounds,#12] |
| 1075 | strb $t2,[$rounds,#13] |
| 1076 | strb $t3,[$rounds,#14] |
| 1077 | strb $s3,[$rounds,#15] |
| 1078 | #endif |
| 1079 | #if __ARM_ARCH__>=5 |
| 1080 | ldmia sp!,{r4-r12,pc} |
| 1081 | #else |
| 1082 | ldmia sp!,{r4-r12,lr} |
| 1083 | tst lr,#1 |
| 1084 | moveq pc,lr @ be binary compatible with V4, yet |
| 1085 | bx lr @ interoperable with Thumb ISA:-) |
| 1086 | #endif |
| 1087 | .size asm_AES_decrypt,.-asm_AES_decrypt |
| 1088 | |
| 1089 | .type _armv4_AES_decrypt,%function |
| 1090 | .align 2 |
| 1091 | _armv4_AES_decrypt: |
| 1092 | str lr,[sp,#-4]! @ push lr |
| 1093 | ldmia $key!,{$t1-$i1} |
| 1094 | eor $s0,$s0,$t1 |
| 1095 | ldr $rounds,[$key,#240-16] |
| 1096 | eor $s1,$s1,$t2 |
| 1097 | eor $s2,$s2,$t3 |
| 1098 | eor $s3,$s3,$i1 |
| 1099 | sub $rounds,$rounds,#1 |
| 1100 | mov lr,#255 |
| 1101 | |
| 1102 | and $i1,lr,$s0,lsr#16 |
| 1103 | and $i2,lr,$s0,lsr#8 |
| 1104 | and $i3,lr,$s0 |
| 1105 | mov $s0,$s0,lsr#24 |
| 1106 | .Ldec_loop: |
| 1107 | ldr $t1,[$tbl,$i1,lsl#2] @ Td1[s0>>16] |
| 1108 | and $i1,lr,$s1 @ i0 |
| 1109 | ldr $t2,[$tbl,$i2,lsl#2] @ Td2[s0>>8] |
| 1110 | and $i2,lr,$s1,lsr#16 |
| 1111 | ldr $t3,[$tbl,$i3,lsl#2] @ Td3[s0>>0] |
| 1112 | and $i3,lr,$s1,lsr#8 |
| 1113 | ldr $s0,[$tbl,$s0,lsl#2] @ Td0[s0>>24] |
| 1114 | mov $s1,$s1,lsr#24 |
| 1115 | |
| 1116 | ldr $i1,[$tbl,$i1,lsl#2] @ Td3[s1>>0] |
| 1117 | ldr $i2,[$tbl,$i2,lsl#2] @ Td1[s1>>16] |
| 1118 | ldr $i3,[$tbl,$i3,lsl#2] @ Td2[s1>>8] |
| 1119 | eor $s0,$s0,$i1,ror#24 |
| 1120 | ldr $s1,[$tbl,$s1,lsl#2] @ Td0[s1>>24] |
| 1121 | and $i1,lr,$s2,lsr#8 @ i0 |
| 1122 | eor $t2,$i2,$t2,ror#8 |
| 1123 | and $i2,lr,$s2 @ i1 |
| 1124 | eor $t3,$i3,$t3,ror#8 |
| 1125 | and $i3,lr,$s2,lsr#16 |
| 1126 | ldr $i1,[$tbl,$i1,lsl#2] @ Td2[s2>>8] |
| 1127 | eor $s1,$s1,$t1,ror#8 |
| 1128 | ldr $i2,[$tbl,$i2,lsl#2] @ Td3[s2>>0] |
| 1129 | mov $s2,$s2,lsr#24 |
| 1130 | |
| 1131 | ldr $i3,[$tbl,$i3,lsl#2] @ Td1[s2>>16] |
| 1132 | eor $s0,$s0,$i1,ror#16 |
| 1133 | ldr $s2,[$tbl,$s2,lsl#2] @ Td0[s2>>24] |
| 1134 | and $i1,lr,$s3,lsr#16 @ i0 |
| 1135 | eor $s1,$s1,$i2,ror#24 |
| 1136 | and $i2,lr,$s3,lsr#8 @ i1 |
| 1137 | eor $t3,$i3,$t3,ror#8 |
| 1138 | and $i3,lr,$s3 @ i2 |
| 1139 | ldr $i1,[$tbl,$i1,lsl#2] @ Td1[s3>>16] |
| 1140 | eor $s2,$s2,$t2,ror#8 |
| 1141 | ldr $i2,[$tbl,$i2,lsl#2] @ Td2[s3>>8] |
| 1142 | mov $s3,$s3,lsr#24 |
| 1143 | |
| 1144 | ldr $i3,[$tbl,$i3,lsl#2] @ Td3[s3>>0] |
| 1145 | eor $s0,$s0,$i1,ror#8 |
| 1146 | ldr $i1,[$key],#16 |
| 1147 | eor $s1,$s1,$i2,ror#16 |
| 1148 | ldr $s3,[$tbl,$s3,lsl#2] @ Td0[s3>>24] |
| 1149 | eor $s2,$s2,$i3,ror#24 |
| 1150 | |
| 1151 | ldr $t1,[$key,#-12] |
| 1152 | eor $s0,$s0,$i1 |
| 1153 | ldr $t2,[$key,#-8] |
| 1154 | eor $s3,$s3,$t3,ror#8 |
| 1155 | ldr $t3,[$key,#-4] |
| 1156 | and $i1,lr,$s0,lsr#16 |
| 1157 | eor $s1,$s1,$t1 |
| 1158 | and $i2,lr,$s0,lsr#8 |
| 1159 | eor $s2,$s2,$t2 |
| 1160 | and $i3,lr,$s0 |
| 1161 | eor $s3,$s3,$t3 |
| 1162 | mov $s0,$s0,lsr#24 |
| 1163 | |
| 1164 | subs $rounds,$rounds,#1 |
| 1165 | bne .Ldec_loop |
| 1166 | |
| 1167 | add $tbl,$tbl,#1024 |
| 1168 | |
| 1169 | ldr $t2,[$tbl,#0] @ prefetch Td4 |
| 1170 | ldr $t3,[$tbl,#32] |
| 1171 | ldr $t1,[$tbl,#64] |
| 1172 | ldr $t2,[$tbl,#96] |
| 1173 | ldr $t3,[$tbl,#128] |
| 1174 | ldr $t1,[$tbl,#160] |
| 1175 | ldr $t2,[$tbl,#192] |
| 1176 | ldr $t3,[$tbl,#224] |
| 1177 | |
| 1178 | ldrb $s0,[$tbl,$s0] @ Td4[s0>>24] |
| 1179 | ldrb $t1,[$tbl,$i1] @ Td4[s0>>16] |
| 1180 | and $i1,lr,$s1 @ i0 |
| 1181 | ldrb $t2,[$tbl,$i2] @ Td4[s0>>8] |
| 1182 | and $i2,lr,$s1,lsr#16 |
| 1183 | ldrb $t3,[$tbl,$i3] @ Td4[s0>>0] |
| 1184 | and $i3,lr,$s1,lsr#8 |
| 1185 | |
| 1186 | add $s1,$tbl,$s1,lsr#24 |
| 1187 | ldrb $i1,[$tbl,$i1] @ Td4[s1>>0] |
| 1188 | ldrb $s1,[$s1] @ Td4[s1>>24] |
| 1189 | ldrb $i2,[$tbl,$i2] @ Td4[s1>>16] |
| 1190 | eor $s0,$i1,$s0,lsl#24 |
| 1191 | ldrb $i3,[$tbl,$i3] @ Td4[s1>>8] |
| 1192 | eor $s1,$t1,$s1,lsl#8 |
| 1193 | and $i1,lr,$s2,lsr#8 @ i0 |
| 1194 | eor $t2,$t2,$i2,lsl#8 |
| 1195 | and $i2,lr,$s2 @ i1 |
| 1196 | ldrb $i1,[$tbl,$i1] @ Td4[s2>>8] |
| 1197 | eor $t3,$t3,$i3,lsl#8 |
| 1198 | ldrb $i2,[$tbl,$i2] @ Td4[s2>>0] |
| 1199 | and $i3,lr,$s2,lsr#16 |
| 1200 | |
| 1201 | add $s2,$tbl,$s2,lsr#24 |
| 1202 | ldrb $s2,[$s2] @ Td4[s2>>24] |
| 1203 | eor $s0,$s0,$i1,lsl#8 |
| 1204 | ldrb $i3,[$tbl,$i3] @ Td4[s2>>16] |
| 1205 | eor $s1,$i2,$s1,lsl#16 |
| 1206 | and $i1,lr,$s3,lsr#16 @ i0 |
| 1207 | eor $s2,$t2,$s2,lsl#16 |
| 1208 | and $i2,lr,$s3,lsr#8 @ i1 |
| 1209 | ldrb $i1,[$tbl,$i1] @ Td4[s3>>16] |
| 1210 | eor $t3,$t3,$i3,lsl#16 |
| 1211 | ldrb $i2,[$tbl,$i2] @ Td4[s3>>8] |
| 1212 | and $i3,lr,$s3 @ i2 |
| 1213 | |
| 1214 | add $s3,$tbl,$s3,lsr#24 |
| 1215 | ldrb $i3,[$tbl,$i3] @ Td4[s3>>0] |
| 1216 | ldrb $s3,[$s3] @ Td4[s3>>24] |
| 1217 | eor $s0,$s0,$i1,lsl#16 |
| 1218 | ldr $i1,[$key,#0] |
| 1219 | eor $s1,$s1,$i2,lsl#8 |
| 1220 | ldr $t1,[$key,#4] |
| 1221 | eor $s2,$i3,$s2,lsl#8 |
| 1222 | ldr $t2,[$key,#8] |
| 1223 | eor $s3,$t3,$s3,lsl#24 |
| 1224 | ldr $t3,[$key,#12] |
| 1225 | |
| 1226 | eor $s0,$s0,$i1 |
| 1227 | eor $s1,$s1,$t1 |
| 1228 | eor $s2,$s2,$t2 |
| 1229 | eor $s3,$s3,$t3 |
| 1230 | |
| 1231 | sub $tbl,$tbl,#1024 |
| 1232 | ldr pc,[sp],#4 @ pop and return |
| 1233 | .size _armv4_AES_decrypt,.-_armv4_AES_decrypt |
| 1234 | .asciz "AES for ARMv4, CRYPTOGAMS by <appro\@openssl.org>" |
| 1235 | .align 2 |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1236 | ___ |
| 1237 | |
| 1238 | $code =~ s/\bbx\s+lr\b/.word\t0xe12fff1e/gm; # make it possible to compile with -march=armv4 |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 1239 | $code =~ s/\bret\b/bx\tlr/gm; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1240 | |
| 1241 | open SELF,$0; |
| 1242 | while(<SELF>) { |
| 1243 | next if (/^#!/); |
| 1244 | last if (!s/^#/@/ and !/^$/); |
| 1245 | print; |
| 1246 | } |
| 1247 | close SELF; |
| 1248 | |
| 1249 | print $code; |
| 1250 | close STDOUT; # enforce flush |