blob: 157091da67e31eb709e41107cd58ed6a65aace8a [file] [log] [blame]
#! /usr/bin/env perl
# Copyright 2007-2016 The OpenSSL Project Authors. All Rights Reserved.
#
# Licensed under the OpenSSL license (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.
$flavour = shift;
if ($flavour=~/\w[\w\-]*\.\w+$/) { $output=$flavour; undef $flavour; }
else { while (($output=shift) && ($output!~/\w[\w\-]*\.\w+$/)) {} }
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 $output";
} else {
open STDOUT,">$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 <GFp/arm_arch.h>
#else
# define __ARM_ARCH__ __LINUX_ARM_ARCH__
#endif
@ Silence ARMv8 deprecated IT instruction warnings. This file is used by both
@ ARMv7 and ARMv8 processors and does not use ARMv8 instructions. (ARMv8 AES
@ instructions are in aesv8-armx.pl.)
.arch armv7-a
.text
#if defined(__thumb2__) && !defined(__APPLE__)
.syntax unified
.thumb
#else
.code 32
#undef __thumb2__
#endif
.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 GFp_aes_nohw_encrypt(const unsigned char *in, unsigned char *out,
@ const AES_KEY *key) {
.global GFp_aes_nohw_encrypt
.type GFp_aes_nohw_encrypt,%function
.align 5
GFp_aes_nohw_encrypt:
#ifndef __thumb2__
sub r3,pc,#8 @ GFp_aes_nohw_encrypt
#else
adr r3,.
#endif
stmdb sp!,{r1,r4-r12,lr}
#if defined(__thumb2__) || defined(__APPLE__)
adr $tbl,AES_Te
#else
sub $tbl,r3,#GFp_aes_nohw_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 GFp_aes_nohw_encrypt,.-GFp_aes_nohw_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 GFp_aes_nohw_set_encrypt_key
.type GFp_aes_nohw_set_encrypt_key,%function
.align 5
GFp_aes_nohw_set_encrypt_key:
_armv4_AES_set_encrypt_key:
#ifndef __thumb2__
sub r3,pc,#8 @ GFp_aes_nohw_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,#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
#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 GFp_aes_nohw_set_encrypt_key,.-GFp_aes_nohw_set_encrypt_key
.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; # enforce flush