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#! /usr/bin/env perl
# Copyright 2007-2020 The OpenSSL Project Authors. All Rights Reserved.
#
# Licensed under the Apache License 2.0 (the "License"). You may not use
# this file except in compliance with the License. You can obtain a copy
# in the file LICENSE in the source distribution or at
# https://www.openssl.org/source/license.html
# ====================================================================
# Written by Andy Polyakov <appro@openssl.org> for the OpenSSL
# project. The module is, however, dual licensed under OpenSSL and
# CRYPTOGAMS licenses depending on where you obtain it. For further
# details see http://www.openssl.org/~appro/cryptogams/.
# ====================================================================
# AES for ARMv4
# January 2007.
#
# Code uses single 1K S-box and is >2 times faster than code generated
# by gcc-3.4.1. This is thanks to unique feature of ARMv4 ISA, which
# allows to merge logical or arithmetic operation with shift or rotate
# in one instruction and emit combined result every cycle. The module
# is endian-neutral. The performance is ~42 cycles/byte for 128-bit
# key [on single-issue Xscale PXA250 core].
# May 2007.
#
# AES_set_[en|de]crypt_key is added.
# July 2010.
#
# Rescheduling for dual-issue pipeline resulted in 12% improvement on
# Cortex A8 core and ~25 cycles per byte processed with 128-bit key.
# February 2011.
#
# Profiler-assisted and platform-specific optimization resulted in 16%
# improvement on Cortex A8 core and ~21.5 cycles per byte.
# $output is the last argument if it looks like a file (it has an extension)
# $flavour is the first argument if it doesn't look like a file
$output = $#ARGV >= 0 && $ARGV[$#ARGV] =~ m|\.\w+$| ? pop : undef;
$flavour = $#ARGV >= 0 && $ARGV[0] !~ m|\.| ? shift : undef;
if ($flavour && $flavour ne "void") {
$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
( $xlate="${dir}arm-xlate.pl" and -f $xlate ) or
( $xlate="${dir}../../perlasm/arm-xlate.pl" and -f $xlate) or
die "can't locate arm-xlate.pl";
open STDOUT,"| \"$^X\" $xlate $flavour \"$output\""
or die "can't call $xlate: $!";
} else {
$output and open STDOUT,">$output";
}
$s0="r0";
$s1="r1";
$s2="r2";
$s3="r3";
$t1="r4";
$t2="r5";
$t3="r6";
$i1="r7";
$i2="r8";
$i3="r9";
$tbl="r10";
$key="r11";
$rounds="r12";
$code=<<___;
#ifndef __KERNEL__
# include "arm_arch.h"
#else
# define __ARM_ARCH__ __LINUX_ARM_ARCH__
#endif
#if defined(__thumb2__) && !defined(__APPLE__)
.syntax unified
.thumb
#else
.code 32
#undef __thumb2__
#endif
.text
.type AES_Te,%object
.align 5
AES_Te:
.word 0xc66363a5, 0xf87c7c84, 0xee777799, 0xf67b7b8d
.word 0xfff2f20d, 0xd66b6bbd, 0xde6f6fb1, 0x91c5c554
.word 0x60303050, 0x02010103, 0xce6767a9, 0x562b2b7d
.word 0xe7fefe19, 0xb5d7d762, 0x4dababe6, 0xec76769a
.word 0x8fcaca45, 0x1f82829d, 0x89c9c940, 0xfa7d7d87
.word 0xeffafa15, 0xb25959eb, 0x8e4747c9, 0xfbf0f00b
.word 0x41adadec, 0xb3d4d467, 0x5fa2a2fd, 0x45afafea
.word 0x239c9cbf, 0x53a4a4f7, 0xe4727296, 0x9bc0c05b
.word 0x75b7b7c2, 0xe1fdfd1c, 0x3d9393ae, 0x4c26266a
.word 0x6c36365a, 0x7e3f3f41, 0xf5f7f702, 0x83cccc4f
.word 0x6834345c, 0x51a5a5f4, 0xd1e5e534, 0xf9f1f108
.word 0xe2717193, 0xabd8d873, 0x62313153, 0x2a15153f
.word 0x0804040c, 0x95c7c752, 0x46232365, 0x9dc3c35e
.word 0x30181828, 0x379696a1, 0x0a05050f, 0x2f9a9ab5
.word 0x0e070709, 0x24121236, 0x1b80809b, 0xdfe2e23d
.word 0xcdebeb26, 0x4e272769, 0x7fb2b2cd, 0xea75759f
.word 0x1209091b, 0x1d83839e, 0x582c2c74, 0x341a1a2e
.word 0x361b1b2d, 0xdc6e6eb2, 0xb45a5aee, 0x5ba0a0fb
.word 0xa45252f6, 0x763b3b4d, 0xb7d6d661, 0x7db3b3ce
.word 0x5229297b, 0xdde3e33e, 0x5e2f2f71, 0x13848497
.word 0xa65353f5, 0xb9d1d168, 0x00000000, 0xc1eded2c
.word 0x40202060, 0xe3fcfc1f, 0x79b1b1c8, 0xb65b5bed
.word 0xd46a6abe, 0x8dcbcb46, 0x67bebed9, 0x7239394b
.word 0x944a4ade, 0x984c4cd4, 0xb05858e8, 0x85cfcf4a
.word 0xbbd0d06b, 0xc5efef2a, 0x4faaaae5, 0xedfbfb16
.word 0x864343c5, 0x9a4d4dd7, 0x66333355, 0x11858594
.word 0x8a4545cf, 0xe9f9f910, 0x04020206, 0xfe7f7f81
.word 0xa05050f0, 0x783c3c44, 0x259f9fba, 0x4ba8a8e3
.word 0xa25151f3, 0x5da3a3fe, 0x804040c0, 0x058f8f8a
.word 0x3f9292ad, 0x219d9dbc, 0x70383848, 0xf1f5f504
.word 0x63bcbcdf, 0x77b6b6c1, 0xafdada75, 0x42212163
.word 0x20101030, 0xe5ffff1a, 0xfdf3f30e, 0xbfd2d26d
.word 0x81cdcd4c, 0x180c0c14, 0x26131335, 0xc3ecec2f
.word 0xbe5f5fe1, 0x359797a2, 0x884444cc, 0x2e171739
.word 0x93c4c457, 0x55a7a7f2, 0xfc7e7e82, 0x7a3d3d47
.word 0xc86464ac, 0xba5d5de7, 0x3219192b, 0xe6737395
.word 0xc06060a0, 0x19818198, 0x9e4f4fd1, 0xa3dcdc7f
.word 0x44222266, 0x542a2a7e, 0x3b9090ab, 0x0b888883
.word 0x8c4646ca, 0xc7eeee29, 0x6bb8b8d3, 0x2814143c
.word 0xa7dede79, 0xbc5e5ee2, 0x160b0b1d, 0xaddbdb76
.word 0xdbe0e03b, 0x64323256, 0x743a3a4e, 0x140a0a1e
.word 0x924949db, 0x0c06060a, 0x4824246c, 0xb85c5ce4
.word 0x9fc2c25d, 0xbdd3d36e, 0x43acacef, 0xc46262a6
.word 0x399191a8, 0x319595a4, 0xd3e4e437, 0xf279798b
.word 0xd5e7e732, 0x8bc8c843, 0x6e373759, 0xda6d6db7
.word 0x018d8d8c, 0xb1d5d564, 0x9c4e4ed2, 0x49a9a9e0
.word 0xd86c6cb4, 0xac5656fa, 0xf3f4f407, 0xcfeaea25
.word 0xca6565af, 0xf47a7a8e, 0x47aeaee9, 0x10080818
.word 0x6fbabad5, 0xf0787888, 0x4a25256f, 0x5c2e2e72
.word 0x381c1c24, 0x57a6a6f1, 0x73b4b4c7, 0x97c6c651
.word 0xcbe8e823, 0xa1dddd7c, 0xe874749c, 0x3e1f1f21
.word 0x964b4bdd, 0x61bdbddc, 0x0d8b8b86, 0x0f8a8a85
.word 0xe0707090, 0x7c3e3e42, 0x71b5b5c4, 0xcc6666aa
.word 0x904848d8, 0x06030305, 0xf7f6f601, 0x1c0e0e12
.word 0xc26161a3, 0x6a35355f, 0xae5757f9, 0x69b9b9d0
.word 0x17868691, 0x99c1c158, 0x3a1d1d27, 0x279e9eb9
.word 0xd9e1e138, 0xebf8f813, 0x2b9898b3, 0x22111133
.word 0xd26969bb, 0xa9d9d970, 0x078e8e89, 0x339494a7
.word 0x2d9b9bb6, 0x3c1e1e22, 0x15878792, 0xc9e9e920
.word 0x87cece49, 0xaa5555ff, 0x50282878, 0xa5dfdf7a
.word 0x038c8c8f, 0x59a1a1f8, 0x09898980, 0x1a0d0d17
.word 0x65bfbfda, 0xd7e6e631, 0x844242c6, 0xd06868b8
.word 0x824141c3, 0x299999b0, 0x5a2d2d77, 0x1e0f0f11
.word 0x7bb0b0cb, 0xa85454fc, 0x6dbbbbd6, 0x2c16163a
@ Te4[256]
.byte 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5
.byte 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76
.byte 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0
.byte 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0
.byte 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc
.byte 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15
.byte 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a
.byte 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75
.byte 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0
.byte 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84
.byte 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b
.byte 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf
.byte 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85
.byte 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8
.byte 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5
.byte 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2
.byte 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17
.byte 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73
.byte 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88
.byte 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb
.byte 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c
.byte 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79
.byte 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9
.byte 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08
.byte 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6
.byte 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a
.byte 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e
.byte 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e
.byte 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94
.byte 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf
.byte 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68
.byte 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16
@ rcon[]
.word 0x01000000, 0x02000000, 0x04000000, 0x08000000
.word 0x10000000, 0x20000000, 0x40000000, 0x80000000
.word 0x1B000000, 0x36000000, 0, 0, 0, 0, 0, 0
.size AES_Te,.-AES_Te
@ void AES_encrypt(const unsigned char *in, unsigned char *out,
@ const AES_KEY *key) {
.global AES_encrypt
.type AES_encrypt,%function
.align 5
AES_encrypt:
#ifndef __thumb2__
sub r3,pc,#8 @ AES_encrypt
#else
adr r3,.
#endif
stmdb sp!,{r1,r4-r12,lr}
#if defined(__thumb2__) || defined(__APPLE__)
adr $tbl,AES_Te
#else
sub $tbl,r3,#AES_encrypt-AES_Te @ Te
#endif
mov $rounds,r0 @ inp
mov $key,r2
#if __ARM_ARCH__<7
ldrb $s0,[$rounds,#3] @ load input data in endian-neutral
ldrb $t1,[$rounds,#2] @ manner...
ldrb $t2,[$rounds,#1]
ldrb $t3,[$rounds,#0]
orr $s0,$s0,$t1,lsl#8
ldrb $s1,[$rounds,#7]
orr $s0,$s0,$t2,lsl#16
ldrb $t1,[$rounds,#6]
orr $s0,$s0,$t3,lsl#24
ldrb $t2,[$rounds,#5]
ldrb $t3,[$rounds,#4]
orr $s1,$s1,$t1,lsl#8
ldrb $s2,[$rounds,#11]
orr $s1,$s1,$t2,lsl#16
ldrb $t1,[$rounds,#10]
orr $s1,$s1,$t3,lsl#24
ldrb $t2,[$rounds,#9]
ldrb $t3,[$rounds,#8]
orr $s2,$s2,$t1,lsl#8
ldrb $s3,[$rounds,#15]
orr $s2,$s2,$t2,lsl#16
ldrb $t1,[$rounds,#14]
orr $s2,$s2,$t3,lsl#24
ldrb $t2,[$rounds,#13]
ldrb $t3,[$rounds,#12]
orr $s3,$s3,$t1,lsl#8
orr $s3,$s3,$t2,lsl#16
orr $s3,$s3,$t3,lsl#24
#else
ldr $s0,[$rounds,#0]
ldr $s1,[$rounds,#4]
ldr $s2,[$rounds,#8]
ldr $s3,[$rounds,#12]
#ifdef __ARMEL__
rev $s0,$s0
rev $s1,$s1
rev $s2,$s2
rev $s3,$s3
#endif
#endif
bl _armv4_AES_encrypt
ldr $rounds,[sp],#4 @ pop out
#if __ARM_ARCH__>=7
#ifdef __ARMEL__
rev $s0,$s0
rev $s1,$s1
rev $s2,$s2
rev $s3,$s3
#endif
str $s0,[$rounds,#0]
str $s1,[$rounds,#4]
str $s2,[$rounds,#8]
str $s3,[$rounds,#12]
#else
mov $t1,$s0,lsr#24 @ write output in endian-neutral
mov $t2,$s0,lsr#16 @ manner...
mov $t3,$s0,lsr#8
strb $t1,[$rounds,#0]
strb $t2,[$rounds,#1]
mov $t1,$s1,lsr#24
strb $t3,[$rounds,#2]
mov $t2,$s1,lsr#16
strb $s0,[$rounds,#3]
mov $t3,$s1,lsr#8
strb $t1,[$rounds,#4]
strb $t2,[$rounds,#5]
mov $t1,$s2,lsr#24
strb $t3,[$rounds,#6]
mov $t2,$s2,lsr#16
strb $s1,[$rounds,#7]
mov $t3,$s2,lsr#8
strb $t1,[$rounds,#8]
strb $t2,[$rounds,#9]
mov $t1,$s3,lsr#24
strb $t3,[$rounds,#10]
mov $t2,$s3,lsr#16
strb $s2,[$rounds,#11]
mov $t3,$s3,lsr#8
strb $t1,[$rounds,#12]
strb $t2,[$rounds,#13]
strb $t3,[$rounds,#14]
strb $s3,[$rounds,#15]
#endif
#if __ARM_ARCH__>=5
ldmia sp!,{r4-r12,pc}
#else
ldmia sp!,{r4-r12,lr}
tst lr,#1
moveq pc,lr @ be binary compatible with V4, yet
bx lr @ interoperable with Thumb ISA:-)
#endif
.size AES_encrypt,.-AES_encrypt
.type _armv4_AES_encrypt,%function
.align 2
_armv4_AES_encrypt:
str lr,[sp,#-4]! @ push lr
ldmia $key!,{$t1-$i1}
eor $s0,$s0,$t1
ldr $rounds,[$key,#240-16]
eor $s1,$s1,$t2
eor $s2,$s2,$t3
eor $s3,$s3,$i1
sub $rounds,$rounds,#1
mov lr,#255
and $i1,lr,$s0
and $i2,lr,$s0,lsr#8
and $i3,lr,$s0,lsr#16
mov $s0,$s0,lsr#24
.Lenc_loop:
ldr $t1,[$tbl,$i1,lsl#2] @ Te3[s0>>0]
and $i1,lr,$s1,lsr#16 @ i0
ldr $t2,[$tbl,$i2,lsl#2] @ Te2[s0>>8]
and $i2,lr,$s1
ldr $t3,[$tbl,$i3,lsl#2] @ Te1[s0>>16]
and $i3,lr,$s1,lsr#8
ldr $s0,[$tbl,$s0,lsl#2] @ Te0[s0>>24]
mov $s1,$s1,lsr#24
ldr $i1,[$tbl,$i1,lsl#2] @ Te1[s1>>16]
ldr $i2,[$tbl,$i2,lsl#2] @ Te3[s1>>0]
ldr $i3,[$tbl,$i3,lsl#2] @ Te2[s1>>8]
eor $s0,$s0,$i1,ror#8
ldr $s1,[$tbl,$s1,lsl#2] @ Te0[s1>>24]
and $i1,lr,$s2,lsr#8 @ i0
eor $t2,$t2,$i2,ror#8
and $i2,lr,$s2,lsr#16 @ i1
eor $t3,$t3,$i3,ror#8
and $i3,lr,$s2
ldr $i1,[$tbl,$i1,lsl#2] @ Te2[s2>>8]
eor $s1,$s1,$t1,ror#24
ldr $i2,[$tbl,$i2,lsl#2] @ Te1[s2>>16]
mov $s2,$s2,lsr#24
ldr $i3,[$tbl,$i3,lsl#2] @ Te3[s2>>0]
eor $s0,$s0,$i1,ror#16
ldr $s2,[$tbl,$s2,lsl#2] @ Te0[s2>>24]
and $i1,lr,$s3 @ i0
eor $s1,$s1,$i2,ror#8
and $i2,lr,$s3,lsr#8 @ i1
eor $t3,$t3,$i3,ror#16
and $i3,lr,$s3,lsr#16 @ i2
ldr $i1,[$tbl,$i1,lsl#2] @ Te3[s3>>0]
eor $s2,$s2,$t2,ror#16
ldr $i2,[$tbl,$i2,lsl#2] @ Te2[s3>>8]
mov $s3,$s3,lsr#24
ldr $i3,[$tbl,$i3,lsl#2] @ Te1[s3>>16]
eor $s0,$s0,$i1,ror#24
ldr $i1,[$key],#16
eor $s1,$s1,$i2,ror#16
ldr $s3,[$tbl,$s3,lsl#2] @ Te0[s3>>24]
eor $s2,$s2,$i3,ror#8
ldr $t1,[$key,#-12]
eor $s3,$s3,$t3,ror#8
ldr $t2,[$key,#-8]
eor $s0,$s0,$i1
ldr $t3,[$key,#-4]
and $i1,lr,$s0
eor $s1,$s1,$t1
and $i2,lr,$s0,lsr#8
eor $s2,$s2,$t2
and $i3,lr,$s0,lsr#16
eor $s3,$s3,$t3
mov $s0,$s0,lsr#24
subs $rounds,$rounds,#1
bne .Lenc_loop
add $tbl,$tbl,#2
ldrb $t1,[$tbl,$i1,lsl#2] @ Te4[s0>>0]
and $i1,lr,$s1,lsr#16 @ i0
ldrb $t2,[$tbl,$i2,lsl#2] @ Te4[s0>>8]
and $i2,lr,$s1
ldrb $t3,[$tbl,$i3,lsl#2] @ Te4[s0>>16]
and $i3,lr,$s1,lsr#8
ldrb $s0,[$tbl,$s0,lsl#2] @ Te4[s0>>24]
mov $s1,$s1,lsr#24
ldrb $i1,[$tbl,$i1,lsl#2] @ Te4[s1>>16]
ldrb $i2,[$tbl,$i2,lsl#2] @ Te4[s1>>0]
ldrb $i3,[$tbl,$i3,lsl#2] @ Te4[s1>>8]
eor $s0,$i1,$s0,lsl#8
ldrb $s1,[$tbl,$s1,lsl#2] @ Te4[s1>>24]
and $i1,lr,$s2,lsr#8 @ i0
eor $t2,$i2,$t2,lsl#8
and $i2,lr,$s2,lsr#16 @ i1
eor $t3,$i3,$t3,lsl#8
and $i3,lr,$s2
ldrb $i1,[$tbl,$i1,lsl#2] @ Te4[s2>>8]
eor $s1,$t1,$s1,lsl#24
ldrb $i2,[$tbl,$i2,lsl#2] @ Te4[s2>>16]
mov $s2,$s2,lsr#24
ldrb $i3,[$tbl,$i3,lsl#2] @ Te4[s2>>0]
eor $s0,$i1,$s0,lsl#8
ldrb $s2,[$tbl,$s2,lsl#2] @ Te4[s2>>24]
and $i1,lr,$s3 @ i0
eor $s1,$s1,$i2,lsl#16
and $i2,lr,$s3,lsr#8 @ i1
eor $t3,$i3,$t3,lsl#8
and $i3,lr,$s3,lsr#16 @ i2
ldrb $i1,[$tbl,$i1,lsl#2] @ Te4[s3>>0]
eor $s2,$t2,$s2,lsl#24
ldrb $i2,[$tbl,$i2,lsl#2] @ Te4[s3>>8]
mov $s3,$s3,lsr#24
ldrb $i3,[$tbl,$i3,lsl#2] @ Te4[s3>>16]
eor $s0,$i1,$s0,lsl#8
ldr $i1,[$key,#0]
ldrb $s3,[$tbl,$s3,lsl#2] @ Te4[s3>>24]
eor $s1,$s1,$i2,lsl#8
ldr $t1,[$key,#4]
eor $s2,$s2,$i3,lsl#16
ldr $t2,[$key,#8]
eor $s3,$t3,$s3,lsl#24
ldr $t3,[$key,#12]
eor $s0,$s0,$i1
eor $s1,$s1,$t1
eor $s2,$s2,$t2
eor $s3,$s3,$t3
sub $tbl,$tbl,#2
ldr pc,[sp],#4 @ pop and return
.size _armv4_AES_encrypt,.-_armv4_AES_encrypt
.global AES_set_encrypt_key
.type AES_set_encrypt_key,%function
.align 5
AES_set_encrypt_key:
_armv4_AES_set_encrypt_key:
#ifndef __thumb2__
sub r3,pc,#8 @ AES_set_encrypt_key
#else
adr r3,.
#endif
teq r0,#0
#ifdef __thumb2__
itt eq @ Thumb2 thing, sanity check in ARM
#endif
moveq r0,#-1
beq .Labrt
teq r2,#0
#ifdef __thumb2__
itt eq @ Thumb2 thing, sanity check in ARM
#endif
moveq r0,#-1
beq .Labrt
teq r1,#128
beq .Lok
teq r1,#192
beq .Lok
teq r1,#256
#ifdef __thumb2__
itt ne @ Thumb2 thing, sanity check in ARM
#endif
movne r0,#-1
bne .Labrt
.Lok: stmdb sp!,{r4-r12,lr}
mov $rounds,r0 @ inp
mov lr,r1 @ bits
mov $key,r2 @ key
#if defined(__thumb2__) || defined(__APPLE__)
adr $tbl,AES_Te+1024 @ Te4
#else
sub $tbl,r3,#_armv4_AES_set_encrypt_key-AES_Te-1024 @ Te4
#endif
#if __ARM_ARCH__<7
ldrb $s0,[$rounds,#3] @ load input data in endian-neutral
ldrb $t1,[$rounds,#2] @ manner...
ldrb $t2,[$rounds,#1]
ldrb $t3,[$rounds,#0]
orr $s0,$s0,$t1,lsl#8
ldrb $s1,[$rounds,#7]
orr $s0,$s0,$t2,lsl#16
ldrb $t1,[$rounds,#6]
orr $s0,$s0,$t3,lsl#24
ldrb $t2,[$rounds,#5]
ldrb $t3,[$rounds,#4]
orr $s1,$s1,$t1,lsl#8
ldrb $s2,[$rounds,#11]
orr $s1,$s1,$t2,lsl#16
ldrb $t1,[$rounds,#10]
orr $s1,$s1,$t3,lsl#24
ldrb $t2,[$rounds,#9]
ldrb $t3,[$rounds,#8]
orr $s2,$s2,$t1,lsl#8
ldrb $s3,[$rounds,#15]
orr $s2,$s2,$t2,lsl#16
ldrb $t1,[$rounds,#14]
orr $s2,$s2,$t3,lsl#24
ldrb $t2,[$rounds,#13]
ldrb $t3,[$rounds,#12]
orr $s3,$s3,$t1,lsl#8
str $s0,[$key],#16
orr $s3,$s3,$t2,lsl#16
str $s1,[$key,#-12]
orr $s3,$s3,$t3,lsl#24
str $s2,[$key,#-8]
str $s3,[$key,#-4]
#else
ldr $s0,[$rounds,#0]
ldr $s1,[$rounds,#4]
ldr $s2,[$rounds,#8]
ldr $s3,[$rounds,#12]
#ifdef __ARMEL__
rev $s0,$s0
rev $s1,$s1
rev $s2,$s2
rev $s3,$s3
#endif
str $s0,[$key],#16
str $s1,[$key,#-12]
str $s2,[$key,#-8]
str $s3,[$key,#-4]
#endif
teq lr,#128
bne .Lnot128
mov $rounds,#10
str $rounds,[$key,#240-16]
add $t3,$tbl,#256 @ rcon
mov lr,#255
.L128_loop:
and $t2,lr,$s3,lsr#24
and $i1,lr,$s3,lsr#16
ldrb $t2,[$tbl,$t2]
and $i2,lr,$s3,lsr#8
ldrb $i1,[$tbl,$i1]
and $i3,lr,$s3
ldrb $i2,[$tbl,$i2]
orr $t2,$t2,$i1,lsl#24
ldrb $i3,[$tbl,$i3]
orr $t2,$t2,$i2,lsl#16
ldr $t1,[$t3],#4 @ rcon[i++]
orr $t2,$t2,$i3,lsl#8
eor $t2,$t2,$t1
eor $s0,$s0,$t2 @ rk[4]=rk[0]^...
eor $s1,$s1,$s0 @ rk[5]=rk[1]^rk[4]
str $s0,[$key],#16
eor $s2,$s2,$s1 @ rk[6]=rk[2]^rk[5]
str $s1,[$key,#-12]
eor $s3,$s3,$s2 @ rk[7]=rk[3]^rk[6]
str $s2,[$key,#-8]
subs $rounds,$rounds,#1
str $s3,[$key,#-4]
bne .L128_loop
sub r2,$key,#176
b .Ldone
.Lnot128:
#if __ARM_ARCH__<7
ldrb $i2,[$rounds,#19]
ldrb $t1,[$rounds,#18]
ldrb $t2,[$rounds,#17]
ldrb $t3,[$rounds,#16]
orr $i2,$i2,$t1,lsl#8
ldrb $i3,[$rounds,#23]
orr $i2,$i2,$t2,lsl#16
ldrb $t1,[$rounds,#22]
orr $i2,$i2,$t3,lsl#24
ldrb $t2,[$rounds,#21]
ldrb $t3,[$rounds,#20]
orr $i3,$i3,$t1,lsl#8
orr $i3,$i3,$t2,lsl#16
str $i2,[$key],#8
orr $i3,$i3,$t3,lsl#24
str $i3,[$key,#-4]
#else
ldr $i2,[$rounds,#16]
ldr $i3,[$rounds,#20]
#ifdef __ARMEL__
rev $i2,$i2
rev $i3,$i3
#endif
str $i2,[$key],#8
str $i3,[$key,#-4]
#endif
teq lr,#192
bne .Lnot192
mov $rounds,#12
str $rounds,[$key,#240-24]
add $t3,$tbl,#256 @ rcon
mov lr,#255
mov $rounds,#8
.L192_loop:
and $t2,lr,$i3,lsr#24
and $i1,lr,$i3,lsr#16
ldrb $t2,[$tbl,$t2]
and $i2,lr,$i3,lsr#8
ldrb $i1,[$tbl,$i1]
and $i3,lr,$i3
ldrb $i2,[$tbl,$i2]
orr $t2,$t2,$i1,lsl#24
ldrb $i3,[$tbl,$i3]
orr $t2,$t2,$i2,lsl#16
ldr $t1,[$t3],#4 @ rcon[i++]
orr $t2,$t2,$i3,lsl#8
eor $i3,$t2,$t1
eor $s0,$s0,$i3 @ rk[6]=rk[0]^...
eor $s1,$s1,$s0 @ rk[7]=rk[1]^rk[6]
str $s0,[$key],#24
eor $s2,$s2,$s1 @ rk[8]=rk[2]^rk[7]
str $s1,[$key,#-20]
eor $s3,$s3,$s2 @ rk[9]=rk[3]^rk[8]
str $s2,[$key,#-16]
subs $rounds,$rounds,#1
str $s3,[$key,#-12]
#ifdef __thumb2__
itt eq @ Thumb2 thing, sanity check in ARM
#endif
subeq r2,$key,#216
beq .Ldone
ldr $i1,[$key,#-32]
ldr $i2,[$key,#-28]
eor $i1,$i1,$s3 @ rk[10]=rk[4]^rk[9]
eor $i3,$i2,$i1 @ rk[11]=rk[5]^rk[10]
str $i1,[$key,#-8]
str $i3,[$key,#-4]
b .L192_loop
.Lnot192:
#if __ARM_ARCH__<7
ldrb $i2,[$rounds,#27]
ldrb $t1,[$rounds,#26]
ldrb $t2,[$rounds,#25]
ldrb $t3,[$rounds,#24]
orr $i2,$i2,$t1,lsl#8
ldrb $i3,[$rounds,#31]
orr $i2,$i2,$t2,lsl#16
ldrb $t1,[$rounds,#30]
orr $i2,$i2,$t3,lsl#24
ldrb $t2,[$rounds,#29]
ldrb $t3,[$rounds,#28]
orr $i3,$i3,$t1,lsl#8
orr $i3,$i3,$t2,lsl#16
str $i2,[$key],#8
orr $i3,$i3,$t3,lsl#24
str $i3,[$key,#-4]
#else
ldr $i2,[$rounds,#24]
ldr $i3,[$rounds,#28]
#ifdef __ARMEL__
rev $i2,$i2
rev $i3,$i3
#endif
str $i2,[$key],#8
str $i3,[$key,#-4]
#endif
mov $rounds,#14
str $rounds,[$key,#240-32]
add $t3,$tbl,#256 @ rcon
mov lr,#255
mov $rounds,#7
.L256_loop:
and $t2,lr,$i3,lsr#24
and $i1,lr,$i3,lsr#16
ldrb $t2,[$tbl,$t2]
and $i2,lr,$i3,lsr#8
ldrb $i1,[$tbl,$i1]
and $i3,lr,$i3
ldrb $i2,[$tbl,$i2]
orr $t2,$t2,$i1,lsl#24
ldrb $i3,[$tbl,$i3]
orr $t2,$t2,$i2,lsl#16
ldr $t1,[$t3],#4 @ rcon[i++]
orr $t2,$t2,$i3,lsl#8
eor $i3,$t2,$t1
eor $s0,$s0,$i3 @ rk[8]=rk[0]^...
eor $s1,$s1,$s0 @ rk[9]=rk[1]^rk[8]
str $s0,[$key],#32
eor $s2,$s2,$s1 @ rk[10]=rk[2]^rk[9]
str $s1,[$key,#-28]
eor $s3,$s3,$s2 @ rk[11]=rk[3]^rk[10]
str $s2,[$key,#-24]
subs $rounds,$rounds,#1
str $s3,[$key,#-20]
#ifdef __thumb2__
itt eq @ Thumb2 thing, sanity check in ARM
#endif
subeq r2,$key,#256
beq .Ldone
and $t2,lr,$s3
and $i1,lr,$s3,lsr#8
ldrb $t2,[$tbl,$t2]
and $i2,lr,$s3,lsr#16
ldrb $i1,[$tbl,$i1]
and $i3,lr,$s3,lsr#24
ldrb $i2,[$tbl,$i2]
orr $t2,$t2,$i1,lsl#8
ldrb $i3,[$tbl,$i3]
orr $t2,$t2,$i2,lsl#16
ldr $t1,[$key,#-48]
orr $t2,$t2,$i3,lsl#24
ldr $i1,[$key,#-44]
ldr $i2,[$key,#-40]
eor $t1,$t1,$t2 @ rk[12]=rk[4]^...
ldr $i3,[$key,#-36]
eor $i1,$i1,$t1 @ rk[13]=rk[5]^rk[12]
str $t1,[$key,#-16]
eor $i2,$i2,$i1 @ rk[14]=rk[6]^rk[13]
str $i1,[$key,#-12]
eor $i3,$i3,$i2 @ rk[15]=rk[7]^rk[14]
str $i2,[$key,#-8]
str $i3,[$key,#-4]
b .L256_loop
.align 2
.Ldone: mov r0,#0
ldmia sp!,{r4-r12,lr}
.Labrt:
#if __ARM_ARCH__>=5
ret @ bx lr
#else
tst lr,#1
moveq pc,lr @ be binary compatible with V4, yet
bx lr @ interoperable with Thumb ISA:-)
#endif
.size AES_set_encrypt_key,.-AES_set_encrypt_key
.global AES_set_decrypt_key
.type AES_set_decrypt_key,%function
.align 5
AES_set_decrypt_key:
str lr,[sp,#-4]! @ push lr
bl _armv4_AES_set_encrypt_key
teq r0,#0
ldr lr,[sp],#4 @ pop lr
bne .Labrt
mov r0,r2 @ AES_set_encrypt_key preserves r2,
mov r1,r2 @ which is AES_KEY *key
b _armv4_AES_set_enc2dec_key
.size AES_set_decrypt_key,.-AES_set_decrypt_key
@ void AES_set_enc2dec_key(const AES_KEY *inp,AES_KEY *out)
.global AES_set_enc2dec_key
.type AES_set_enc2dec_key,%function
.align 5
AES_set_enc2dec_key:
_armv4_AES_set_enc2dec_key:
stmdb sp!,{r4-r12,lr}
ldr $rounds,[r0,#240]
mov $i1,r0 @ input
add $i2,r0,$rounds,lsl#4
mov $key,r1 @ output
add $tbl,r1,$rounds,lsl#4
str $rounds,[r1,#240]
.Linv: ldr $s0,[$i1],#16
ldr $s1,[$i1,#-12]
ldr $s2,[$i1,#-8]
ldr $s3,[$i1,#-4]
ldr $t1,[$i2],#-16
ldr $t2,[$i2,#16+4]
ldr $t3,[$i2,#16+8]
ldr $i3,[$i2,#16+12]
str $s0,[$tbl],#-16
str $s1,[$tbl,#16+4]
str $s2,[$tbl,#16+8]
str $s3,[$tbl,#16+12]
str $t1,[$key],#16
str $t2,[$key,#-12]
str $t3,[$key,#-8]
str $i3,[$key,#-4]
teq $i1,$i2
bne .Linv
ldr $s0,[$i1]
ldr $s1,[$i1,#4]
ldr $s2,[$i1,#8]
ldr $s3,[$i1,#12]
str $s0,[$key]
str $s1,[$key,#4]
str $s2,[$key,#8]
str $s3,[$key,#12]
sub $key,$key,$rounds,lsl#3
___
$mask80=$i1;
$mask1b=$i2;
$mask7f=$i3;
$code.=<<___;
ldr $s0,[$key,#16]! @ prefetch tp1
mov $mask80,#0x80
mov $mask1b,#0x1b
orr $mask80,$mask80,#0x8000
orr $mask1b,$mask1b,#0x1b00
orr $mask80,$mask80,$mask80,lsl#16
orr $mask1b,$mask1b,$mask1b,lsl#16
sub $rounds,$rounds,#1
mvn $mask7f,$mask80
mov $rounds,$rounds,lsl#2 @ (rounds-1)*4
.Lmix: and $t1,$s0,$mask80
and $s1,$s0,$mask7f
sub $t1,$t1,$t1,lsr#7
and $t1,$t1,$mask1b
eor $s1,$t1,$s1,lsl#1 @ tp2
and $t1,$s1,$mask80
and $s2,$s1,$mask7f
sub $t1,$t1,$t1,lsr#7
and $t1,$t1,$mask1b
eor $s2,$t1,$s2,lsl#1 @ tp4
and $t1,$s2,$mask80
and $s3,$s2,$mask7f
sub $t1,$t1,$t1,lsr#7
and $t1,$t1,$mask1b
eor $s3,$t1,$s3,lsl#1 @ tp8
eor $t1,$s1,$s2
eor $t2,$s0,$s3 @ tp9
eor $t1,$t1,$s3 @ tpe
eor $t1,$t1,$s1,ror#24
eor $t1,$t1,$t2,ror#24 @ ^= ROTATE(tpb=tp9^tp2,8)
eor $t1,$t1,$s2,ror#16
eor $t1,$t1,$t2,ror#16 @ ^= ROTATE(tpd=tp9^tp4,16)
eor $t1,$t1,$t2,ror#8 @ ^= ROTATE(tp9,24)
ldr $s0,[$key,#4] @ prefetch tp1
str $t1,[$key],#4
subs $rounds,$rounds,#1
bne .Lmix
mov r0,#0
#if __ARM_ARCH__>=5
ldmia sp!,{r4-r12,pc}
#else
ldmia sp!,{r4-r12,lr}
tst lr,#1
moveq pc,lr @ be binary compatible with V4, yet
bx lr @ interoperable with Thumb ISA:-)
#endif
.size AES_set_enc2dec_key,.-AES_set_enc2dec_key
.type AES_Td,%object
.align 5
AES_Td:
.word 0x51f4a750, 0x7e416553, 0x1a17a4c3, 0x3a275e96
.word 0x3bab6bcb, 0x1f9d45f1, 0xacfa58ab, 0x4be30393
.word 0x2030fa55, 0xad766df6, 0x88cc7691, 0xf5024c25
.word 0x4fe5d7fc, 0xc52acbd7, 0x26354480, 0xb562a38f
.word 0xdeb15a49, 0x25ba1b67, 0x45ea0e98, 0x5dfec0e1
.word 0xc32f7502, 0x814cf012, 0x8d4697a3, 0x6bd3f9c6
.word 0x038f5fe7, 0x15929c95, 0xbf6d7aeb, 0x955259da
.word 0xd4be832d, 0x587421d3, 0x49e06929, 0x8ec9c844
.word 0x75c2896a, 0xf48e7978, 0x99583e6b, 0x27b971dd
.word 0xbee14fb6, 0xf088ad17, 0xc920ac66, 0x7dce3ab4
.word 0x63df4a18, 0xe51a3182, 0x97513360, 0x62537f45
.word 0xb16477e0, 0xbb6bae84, 0xfe81a01c, 0xf9082b94
.word 0x70486858, 0x8f45fd19, 0x94de6c87, 0x527bf8b7
.word 0xab73d323, 0x724b02e2, 0xe31f8f57, 0x6655ab2a
.word 0xb2eb2807, 0x2fb5c203, 0x86c57b9a, 0xd33708a5
.word 0x302887f2, 0x23bfa5b2, 0x02036aba, 0xed16825c
.word 0x8acf1c2b, 0xa779b492, 0xf307f2f0, 0x4e69e2a1
.word 0x65daf4cd, 0x0605bed5, 0xd134621f, 0xc4a6fe8a
.word 0x342e539d, 0xa2f355a0, 0x058ae132, 0xa4f6eb75
.word 0x0b83ec39, 0x4060efaa, 0x5e719f06, 0xbd6e1051
.word 0x3e218af9, 0x96dd063d, 0xdd3e05ae, 0x4de6bd46
.word 0x91548db5, 0x71c45d05, 0x0406d46f, 0x605015ff
.word 0x1998fb24, 0xd6bde997, 0x894043cc, 0x67d99e77
.word 0xb0e842bd, 0x07898b88, 0xe7195b38, 0x79c8eedb
.word 0xa17c0a47, 0x7c420fe9, 0xf8841ec9, 0x00000000
.word 0x09808683, 0x322bed48, 0x1e1170ac, 0x6c5a724e
.word 0xfd0efffb, 0x0f853856, 0x3daed51e, 0x362d3927
.word 0x0a0fd964, 0x685ca621, 0x9b5b54d1, 0x24362e3a
.word 0x0c0a67b1, 0x9357e70f, 0xb4ee96d2, 0x1b9b919e
.word 0x80c0c54f, 0x61dc20a2, 0x5a774b69, 0x1c121a16
.word 0xe293ba0a, 0xc0a02ae5, 0x3c22e043, 0x121b171d
.word 0x0e090d0b, 0xf28bc7ad, 0x2db6a8b9, 0x141ea9c8
.word 0x57f11985, 0xaf75074c, 0xee99ddbb, 0xa37f60fd
.word 0xf701269f, 0x5c72f5bc, 0x44663bc5, 0x5bfb7e34
.word 0x8b432976, 0xcb23c6dc, 0xb6edfc68, 0xb8e4f163
.word 0xd731dcca, 0x42638510, 0x13972240, 0x84c61120
.word 0x854a247d, 0xd2bb3df8, 0xaef93211, 0xc729a16d
.word 0x1d9e2f4b, 0xdcb230f3, 0x0d8652ec, 0x77c1e3d0
.word 0x2bb3166c, 0xa970b999, 0x119448fa, 0x47e96422
.word 0xa8fc8cc4, 0xa0f03f1a, 0x567d2cd8, 0x223390ef
.word 0x87494ec7, 0xd938d1c1, 0x8ccaa2fe, 0x98d40b36
.word 0xa6f581cf, 0xa57ade28, 0xdab78e26, 0x3fadbfa4
.word 0x2c3a9de4, 0x5078920d, 0x6a5fcc9b, 0x547e4662
.word 0xf68d13c2, 0x90d8b8e8, 0x2e39f75e, 0x82c3aff5
.word 0x9f5d80be, 0x69d0937c, 0x6fd52da9, 0xcf2512b3
.word 0xc8ac993b, 0x10187da7, 0xe89c636e, 0xdb3bbb7b
.word 0xcd267809, 0x6e5918f4, 0xec9ab701, 0x834f9aa8
.word 0xe6956e65, 0xaaffe67e, 0x21bccf08, 0xef15e8e6
.word 0xbae79bd9, 0x4a6f36ce, 0xea9f09d4, 0x29b07cd6
.word 0x31a4b2af, 0x2a3f2331, 0xc6a59430, 0x35a266c0
.word 0x744ebc37, 0xfc82caa6, 0xe090d0b0, 0x33a7d815
.word 0xf104984a, 0x41ecdaf7, 0x7fcd500e, 0x1791f62f
.word 0x764dd68d, 0x43efb04d, 0xccaa4d54, 0xe49604df
.word 0x9ed1b5e3, 0x4c6a881b, 0xc12c1fb8, 0x4665517f
.word 0x9d5eea04, 0x018c355d, 0xfa877473, 0xfb0b412e
.word 0xb3671d5a, 0x92dbd252, 0xe9105633, 0x6dd64713
.word 0x9ad7618c, 0x37a10c7a, 0x59f8148e, 0xeb133c89
.word 0xcea927ee, 0xb761c935, 0xe11ce5ed, 0x7a47b13c
.word 0x9cd2df59, 0x55f2733f, 0x1814ce79, 0x73c737bf
.word 0x53f7cdea, 0x5ffdaa5b, 0xdf3d6f14, 0x7844db86
.word 0xcaaff381, 0xb968c43e, 0x3824342c, 0xc2a3405f
.word 0x161dc372, 0xbce2250c, 0x283c498b, 0xff0d9541
.word 0x39a80171, 0x080cb3de, 0xd8b4e49c, 0x6456c190
.word 0x7bcb8461, 0xd532b670, 0x486c5c74, 0xd0b85742
@ Td4[256]
.byte 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38
.byte 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb
.byte 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87
.byte 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb
.byte 0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d
.byte 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e
.byte 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2
.byte 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25
.byte 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16
.byte 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92
.byte 0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda
.byte 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84
.byte 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a
.byte 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06
.byte 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02
.byte 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b
.byte 0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea
.byte 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73
.byte 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85
.byte 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e
.byte 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89
.byte 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b
.byte 0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20
.byte 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4
.byte 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31
.byte 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f
.byte 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d
.byte 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef
.byte 0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0
.byte 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61
.byte 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26
.byte 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d
.size AES_Td,.-AES_Td
@ void AES_decrypt(const unsigned char *in, unsigned char *out,
@ const AES_KEY *key) {
.global AES_decrypt
.type AES_decrypt,%function
.align 5
AES_decrypt:
#ifndef __thumb2__
sub r3,pc,#8 @ AES_decrypt
#else
adr r3,.
#endif
stmdb sp!,{r1,r4-r12,lr}
#if defined(__thumb2__) || defined(__APPLE__)
adr $tbl,AES_Td
#else
sub $tbl,r3,#AES_decrypt-AES_Td @ Td
#endif
mov $rounds,r0 @ inp
mov $key,r2
#if __ARM_ARCH__<7
ldrb $s0,[$rounds,#3] @ load input data in endian-neutral
ldrb $t1,[$rounds,#2] @ manner...
ldrb $t2,[$rounds,#1]
ldrb $t3,[$rounds,#0]
orr $s0,$s0,$t1,lsl#8
ldrb $s1,[$rounds,#7]
orr $s0,$s0,$t2,lsl#16
ldrb $t1,[$rounds,#6]
orr $s0,$s0,$t3,lsl#24
ldrb $t2,[$rounds,#5]
ldrb $t3,[$rounds,#4]
orr $s1,$s1,$t1,lsl#8
ldrb $s2,[$rounds,#11]
orr $s1,$s1,$t2,lsl#16
ldrb $t1,[$rounds,#10]
orr $s1,$s1,$t3,lsl#24
ldrb $t2,[$rounds,#9]
ldrb $t3,[$rounds,#8]
orr $s2,$s2,$t1,lsl#8
ldrb $s3,[$rounds,#15]
orr $s2,$s2,$t2,lsl#16
ldrb $t1,[$rounds,#14]
orr $s2,$s2,$t3,lsl#24
ldrb $t2,[$rounds,#13]
ldrb $t3,[$rounds,#12]
orr $s3,$s3,$t1,lsl#8
orr $s3,$s3,$t2,lsl#16
orr $s3,$s3,$t3,lsl#24
#else
ldr $s0,[$rounds,#0]
ldr $s1,[$rounds,#4]
ldr $s2,[$rounds,#8]
ldr $s3,[$rounds,#12]
#ifdef __ARMEL__
rev $s0,$s0
rev $s1,$s1
rev $s2,$s2
rev $s3,$s3
#endif
#endif
bl _armv4_AES_decrypt
ldr $rounds,[sp],#4 @ pop out
#if __ARM_ARCH__>=7
#ifdef __ARMEL__
rev $s0,$s0
rev $s1,$s1
rev $s2,$s2
rev $s3,$s3
#endif
str $s0,[$rounds,#0]
str $s1,[$rounds,#4]
str $s2,[$rounds,#8]
str $s3,[$rounds,#12]
#else
mov $t1,$s0,lsr#24 @ write output in endian-neutral
mov $t2,$s0,lsr#16 @ manner...
mov $t3,$s0,lsr#8
strb $t1,[$rounds,#0]
strb $t2,[$rounds,#1]
mov $t1,$s1,lsr#24
strb $t3,[$rounds,#2]
mov $t2,$s1,lsr#16
strb $s0,[$rounds,#3]
mov $t3,$s1,lsr#8
strb $t1,[$rounds,#4]
strb $t2,[$rounds,#5]
mov $t1,$s2,lsr#24
strb $t3,[$rounds,#6]
mov $t2,$s2,lsr#16
strb $s1,[$rounds,#7]
mov $t3,$s2,lsr#8
strb $t1,[$rounds,#8]
strb $t2,[$rounds,#9]
mov $t1,$s3,lsr#24
strb $t3,[$rounds,#10]
mov $t2,$s3,lsr#16
strb $s2,[$rounds,#11]
mov $t3,$s3,lsr#8
strb $t1,[$rounds,#12]
strb $t2,[$rounds,#13]
strb $t3,[$rounds,#14]
strb $s3,[$rounds,#15]
#endif
#if __ARM_ARCH__>=5
ldmia sp!,{r4-r12,pc}
#else
ldmia sp!,{r4-r12,lr}
tst lr,#1
moveq pc,lr @ be binary compatible with V4, yet
bx lr @ interoperable with Thumb ISA:-)
#endif
.size AES_decrypt,.-AES_decrypt
.type _armv4_AES_decrypt,%function
.align 2
_armv4_AES_decrypt:
str lr,[sp,#-4]! @ push lr
ldmia $key!,{$t1-$i1}
eor $s0,$s0,$t1
ldr $rounds,[$key,#240-16]
eor $s1,$s1,$t2
eor $s2,$s2,$t3
eor $s3,$s3,$i1
sub $rounds,$rounds,#1
mov lr,#255
and $i1,lr,$s0,lsr#16
and $i2,lr,$s0,lsr#8
and $i3,lr,$s0
mov $s0,$s0,lsr#24
.Ldec_loop:
ldr $t1,[$tbl,$i1,lsl#2] @ Td1[s0>>16]
and $i1,lr,$s1 @ i0
ldr $t2,[$tbl,$i2,lsl#2] @ Td2[s0>>8]
and $i2,lr,$s1,lsr#16
ldr $t3,[$tbl,$i3,lsl#2] @ Td3[s0>>0]
and $i3,lr,$s1,lsr#8
ldr $s0,[$tbl,$s0,lsl#2] @ Td0[s0>>24]
mov $s1,$s1,lsr#24
ldr $i1,[$tbl,$i1,lsl#2] @ Td3[s1>>0]
ldr $i2,[$tbl,$i2,lsl#2] @ Td1[s1>>16]
ldr $i3,[$tbl,$i3,lsl#2] @ Td2[s1>>8]
eor $s0,$s0,$i1,ror#24
ldr $s1,[$tbl,$s1,lsl#2] @ Td0[s1>>24]
and $i1,lr,$s2,lsr#8 @ i0
eor $t2,$i2,$t2,ror#8
and $i2,lr,$s2 @ i1
eor $t3,$i3,$t3,ror#8
and $i3,lr,$s2,lsr#16
ldr $i1,[$tbl,$i1,lsl#2] @ Td2[s2>>8]
eor $s1,$s1,$t1,ror#8
ldr $i2,[$tbl,$i2,lsl#2] @ Td3[s2>>0]
mov $s2,$s2,lsr#24
ldr $i3,[$tbl,$i3,lsl#2] @ Td1[s2>>16]
eor $s0,$s0,$i1,ror#16
ldr $s2,[$tbl,$s2,lsl#2] @ Td0[s2>>24]
and $i1,lr,$s3,lsr#16 @ i0
eor $s1,$s1,$i2,ror#24
and $i2,lr,$s3,lsr#8 @ i1
eor $t3,$i3,$t3,ror#8
and $i3,lr,$s3 @ i2
ldr $i1,[$tbl,$i1,lsl#2] @ Td1[s3>>16]
eor $s2,$s2,$t2,ror#8
ldr $i2,[$tbl,$i2,lsl#2] @ Td2[s3>>8]
mov $s3,$s3,lsr#24
ldr $i3,[$tbl,$i3,lsl#2] @ Td3[s3>>0]
eor $s0,$s0,$i1,ror#8
ldr $i1,[$key],#16
eor $s1,$s1,$i2,ror#16
ldr $s3,[$tbl,$s3,lsl#2] @ Td0[s3>>24]
eor $s2,$s2,$i3,ror#24
ldr $t1,[$key,#-12]
eor $s0,$s0,$i1
ldr $t2,[$key,#-8]
eor $s3,$s3,$t3,ror#8
ldr $t3,[$key,#-4]
and $i1,lr,$s0,lsr#16
eor $s1,$s1,$t1
and $i2,lr,$s0,lsr#8
eor $s2,$s2,$t2
and $i3,lr,$s0
eor $s3,$s3,$t3
mov $s0,$s0,lsr#24
subs $rounds,$rounds,#1
bne .Ldec_loop
add $tbl,$tbl,#1024
ldr $t2,[$tbl,#0] @ prefetch Td4
ldr $t3,[$tbl,#32]
ldr $t1,[$tbl,#64]
ldr $t2,[$tbl,#96]
ldr $t3,[$tbl,#128]
ldr $t1,[$tbl,#160]
ldr $t2,[$tbl,#192]
ldr $t3,[$tbl,#224]
ldrb $s0,[$tbl,$s0] @ Td4[s0>>24]
ldrb $t1,[$tbl,$i1] @ Td4[s0>>16]
and $i1,lr,$s1 @ i0
ldrb $t2,[$tbl,$i2] @ Td4[s0>>8]
and $i2,lr,$s1,lsr#16
ldrb $t3,[$tbl,$i3] @ Td4[s0>>0]
and $i3,lr,$s1,lsr#8
add $s1,$tbl,$s1,lsr#24
ldrb $i1,[$tbl,$i1] @ Td4[s1>>0]
ldrb $s1,[$s1] @ Td4[s1>>24]
ldrb $i2,[$tbl,$i2] @ Td4[s1>>16]
eor $s0,$i1,$s0,lsl#24
ldrb $i3,[$tbl,$i3] @ Td4[s1>>8]
eor $s1,$t1,$s1,lsl#8
and $i1,lr,$s2,lsr#8 @ i0
eor $t2,$t2,$i2,lsl#8
and $i2,lr,$s2 @ i1
ldrb $i1,[$tbl,$i1] @ Td4[s2>>8]
eor $t3,$t3,$i3,lsl#8
ldrb $i2,[$tbl,$i2] @ Td4[s2>>0]
and $i3,lr,$s2,lsr#16
add $s2,$tbl,$s2,lsr#24
ldrb $s2,[$s2] @ Td4[s2>>24]
eor $s0,$s0,$i1,lsl#8
ldrb $i3,[$tbl,$i3] @ Td4[s2>>16]
eor $s1,$i2,$s1,lsl#16
and $i1,lr,$s3,lsr#16 @ i0
eor $s2,$t2,$s2,lsl#16
and $i2,lr,$s3,lsr#8 @ i1
ldrb $i1,[$tbl,$i1] @ Td4[s3>>16]
eor $t3,$t3,$i3,lsl#16
ldrb $i2,[$tbl,$i2] @ Td4[s3>>8]
and $i3,lr,$s3 @ i2
add $s3,$tbl,$s3,lsr#24
ldrb $i3,[$tbl,$i3] @ Td4[s3>>0]
ldrb $s3,[$s3] @ Td4[s3>>24]
eor $s0,$s0,$i1,lsl#16
ldr $i1,[$key,#0]
eor $s1,$s1,$i2,lsl#8
ldr $t1,[$key,#4]
eor $s2,$i3,$s2,lsl#8
ldr $t2,[$key,#8]
eor $s3,$t3,$s3,lsl#24
ldr $t3,[$key,#12]
eor $s0,$s0,$i1
eor $s1,$s1,$t1
eor $s2,$s2,$t2
eor $s3,$s3,$t3
sub $tbl,$tbl,#1024
ldr pc,[sp],#4 @ pop and return
.size _armv4_AES_decrypt,.-_armv4_AES_decrypt
.asciz "AES for ARMv4, CRYPTOGAMS by <appro\@openssl.org>"
.align 2
___
$code =~ s/\bbx\s+lr\b/.word\t0xe12fff1e/gm; # make it possible to compile with -march=armv4
$code =~ s/\bret\b/bx\tlr/gm;
open SELF,$0;
while(<SELF>) {
next if (/^#!/);
last if (!s/^#/@/ and !/^$/);
print;
}
close SELF;
print $code;
close STDOUT or die "error closing STDOUT: $!"; # enforce flush
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