1004 lines
22 KiB
Perl
Executable file
1004 lines
22 KiB
Perl
Executable file
#! /usr/bin/env perl
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# Copyright 2014-2016 The OpenSSL Project Authors. All Rights Reserved.
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#
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# Licensed under the OpenSSL license (the "License"). You may not use
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# this file except in compliance with the License. You can obtain a copy
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# in the file LICENSE in the source distribution or at
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# https://www.openssl.org/source/license.html
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#
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# ====================================================================
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# Written by Andy Polyakov <appro@openssl.org> for the OpenSSL
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# project. The module is, however, dual licensed under OpenSSL and
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# CRYPTOGAMS licenses depending on where you obtain it. For further
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# details see http://www.openssl.org/~appro/cryptogams/.
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# ====================================================================
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#
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# This module implements support for ARMv8 AES instructions. The
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# module is endian-agnostic in sense that it supports both big- and
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# little-endian cases. As does it support both 32- and 64-bit modes
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# of operation. Latter is achieved by limiting amount of utilized
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# registers to 16, which implies additional NEON load and integer
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# instructions. This has no effect on mighty Apple A7, where results
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# are literally equal to the theoretical estimates based on AES
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# instruction latencies and issue rates. On Cortex-A53, an in-order
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# execution core, this costs up to 10-15%, which is partially
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# compensated by implementing dedicated code path for 128-bit
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# CBC encrypt case. On Cortex-A57 parallelizable mode performance
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# seems to be limited by sheer amount of NEON instructions...
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#
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# Performance in cycles per byte processed with 128-bit key:
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#
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# CBC enc CBC dec CTR
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# Apple A7 2.39 1.20 1.20
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# Cortex-A53 1.32 1.29 1.46
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# Cortex-A57(*) 1.95 0.85 0.93
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# Denver 1.96 0.86 0.80
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#
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# (*) original 3.64/1.34/1.32 results were for r0p0 revision
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# and are still same even for updated module;
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$flavour = shift;
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$output = shift;
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$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
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( $xlate="${dir}arm-xlate.pl" and -f $xlate ) or
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( $xlate="${dir}../../perlasm/arm-xlate.pl" and -f $xlate) or
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die "can't locate arm-xlate.pl";
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open OUT,"| \"$^X\" $xlate $flavour $output";
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*STDOUT=*OUT;
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$prefix="aes_v8";
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$code=<<___;
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#include "arm_arch.h"
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#if __ARM_MAX_ARCH__>=7
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.text
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___
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$code.=".arch armv8-a+crypto\n" if ($flavour =~ /64/);
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$code.=".arch armv7-a\n.fpu neon\n.code 32\n" if ($flavour !~ /64/);
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#^^^^^^ this is done to simplify adoption by not depending
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# on latest binutils.
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# Assembler mnemonics are an eclectic mix of 32- and 64-bit syntax,
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# NEON is mostly 32-bit mnemonics, integer - mostly 64. Goal is to
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# maintain both 32- and 64-bit codes within single module and
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# transliterate common code to either flavour with regex vodoo.
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#
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{{{
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my ($inp,$bits,$out,$ptr,$rounds)=("x0","w1","x2","x3","w12");
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my ($zero,$rcon,$mask,$in0,$in1,$tmp,$key)=
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$flavour=~/64/? map("q$_",(0..6)) : map("q$_",(0..3,8..10));
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$code.=<<___;
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.align 5
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.Lrcon:
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.long 0x01,0x01,0x01,0x01
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.long 0x0c0f0e0d,0x0c0f0e0d,0x0c0f0e0d,0x0c0f0e0d // rotate-n-splat
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.long 0x1b,0x1b,0x1b,0x1b
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.globl ${prefix}_set_encrypt_key
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.type ${prefix}_set_encrypt_key,%function
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.align 5
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${prefix}_set_encrypt_key:
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.Lenc_key:
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___
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$code.=<<___ if ($flavour =~ /64/);
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stp x29,x30,[sp,#-16]!
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add x29,sp,#0
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___
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$code.=<<___;
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mov $ptr,#-1
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cmp $inp,#0
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b.eq .Lenc_key_abort
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cmp $out,#0
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b.eq .Lenc_key_abort
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mov $ptr,#-2
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cmp $bits,#128
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b.lt .Lenc_key_abort
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cmp $bits,#256
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b.gt .Lenc_key_abort
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tst $bits,#0x3f
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b.ne .Lenc_key_abort
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adr $ptr,.Lrcon
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cmp $bits,#192
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veor $zero,$zero,$zero
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vld1.8 {$in0},[$inp],#16
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mov $bits,#8 // reuse $bits
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vld1.32 {$rcon,$mask},[$ptr],#32
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b.lt .Loop128
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b.eq .L192
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b .L256
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.align 4
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.Loop128:
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vtbl.8 $key,{$in0},$mask
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vext.8 $tmp,$zero,$in0,#12
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vst1.32 {$in0},[$out],#16
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aese $key,$zero
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subs $bits,$bits,#1
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veor $in0,$in0,$tmp
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vext.8 $tmp,$zero,$tmp,#12
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veor $in0,$in0,$tmp
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vext.8 $tmp,$zero,$tmp,#12
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veor $key,$key,$rcon
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veor $in0,$in0,$tmp
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vshl.u8 $rcon,$rcon,#1
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veor $in0,$in0,$key
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b.ne .Loop128
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vld1.32 {$rcon},[$ptr]
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vtbl.8 $key,{$in0},$mask
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vext.8 $tmp,$zero,$in0,#12
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vst1.32 {$in0},[$out],#16
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aese $key,$zero
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veor $in0,$in0,$tmp
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vext.8 $tmp,$zero,$tmp,#12
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veor $in0,$in0,$tmp
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vext.8 $tmp,$zero,$tmp,#12
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veor $key,$key,$rcon
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veor $in0,$in0,$tmp
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vshl.u8 $rcon,$rcon,#1
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veor $in0,$in0,$key
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vtbl.8 $key,{$in0},$mask
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vext.8 $tmp,$zero,$in0,#12
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vst1.32 {$in0},[$out],#16
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aese $key,$zero
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veor $in0,$in0,$tmp
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vext.8 $tmp,$zero,$tmp,#12
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veor $in0,$in0,$tmp
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vext.8 $tmp,$zero,$tmp,#12
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veor $key,$key,$rcon
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veor $in0,$in0,$tmp
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veor $in0,$in0,$key
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vst1.32 {$in0},[$out]
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add $out,$out,#0x50
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mov $rounds,#10
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b .Ldone
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.align 4
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.L192:
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vld1.8 {$in1},[$inp],#8
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vmov.i8 $key,#8 // borrow $key
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vst1.32 {$in0},[$out],#16
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vsub.i8 $mask,$mask,$key // adjust the mask
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.Loop192:
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vtbl.8 $key,{$in1},$mask
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vext.8 $tmp,$zero,$in0,#12
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vst1.32 {$in1},[$out],#8
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aese $key,$zero
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subs $bits,$bits,#1
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veor $in0,$in0,$tmp
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vext.8 $tmp,$zero,$tmp,#12
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veor $in0,$in0,$tmp
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vext.8 $tmp,$zero,$tmp,#12
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veor $in0,$in0,$tmp
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vdup.32 $tmp,${in0}[3]
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veor $tmp,$tmp,$in1
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veor $key,$key,$rcon
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vext.8 $in1,$zero,$in1,#12
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vshl.u8 $rcon,$rcon,#1
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veor $in1,$in1,$tmp
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veor $in0,$in0,$key
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veor $in1,$in1,$key
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vst1.32 {$in0},[$out],#16
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b.ne .Loop192
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mov $rounds,#12
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add $out,$out,#0x20
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b .Ldone
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.align 4
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.L256:
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vld1.8 {$in1},[$inp]
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mov $bits,#7
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mov $rounds,#14
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vst1.32 {$in0},[$out],#16
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.Loop256:
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vtbl.8 $key,{$in1},$mask
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vext.8 $tmp,$zero,$in0,#12
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vst1.32 {$in1},[$out],#16
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aese $key,$zero
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subs $bits,$bits,#1
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veor $in0,$in0,$tmp
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vext.8 $tmp,$zero,$tmp,#12
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veor $in0,$in0,$tmp
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vext.8 $tmp,$zero,$tmp,#12
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veor $key,$key,$rcon
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veor $in0,$in0,$tmp
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vshl.u8 $rcon,$rcon,#1
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veor $in0,$in0,$key
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vst1.32 {$in0},[$out],#16
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b.eq .Ldone
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vdup.32 $key,${in0}[3] // just splat
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vext.8 $tmp,$zero,$in1,#12
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aese $key,$zero
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veor $in1,$in1,$tmp
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vext.8 $tmp,$zero,$tmp,#12
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veor $in1,$in1,$tmp
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vext.8 $tmp,$zero,$tmp,#12
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veor $in1,$in1,$tmp
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veor $in1,$in1,$key
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b .Loop256
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.Ldone:
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str $rounds,[$out]
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mov $ptr,#0
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.Lenc_key_abort:
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mov x0,$ptr // return value
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`"ldr x29,[sp],#16" if ($flavour =~ /64/)`
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ret
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.size ${prefix}_set_encrypt_key,.-${prefix}_set_encrypt_key
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.globl ${prefix}_set_decrypt_key
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.type ${prefix}_set_decrypt_key,%function
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.align 5
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${prefix}_set_decrypt_key:
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___
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$code.=<<___ if ($flavour =~ /64/);
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stp x29,x30,[sp,#-16]!
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add x29,sp,#0
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___
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$code.=<<___ if ($flavour !~ /64/);
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stmdb sp!,{r4,lr}
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___
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$code.=<<___;
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bl .Lenc_key
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cmp x0,#0
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b.ne .Ldec_key_abort
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sub $out,$out,#240 // restore original $out
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mov x4,#-16
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add $inp,$out,x12,lsl#4 // end of key schedule
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vld1.32 {v0.16b},[$out]
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vld1.32 {v1.16b},[$inp]
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vst1.32 {v0.16b},[$inp],x4
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vst1.32 {v1.16b},[$out],#16
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.Loop_imc:
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vld1.32 {v0.16b},[$out]
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vld1.32 {v1.16b},[$inp]
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aesimc v0.16b,v0.16b
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aesimc v1.16b,v1.16b
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vst1.32 {v0.16b},[$inp],x4
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vst1.32 {v1.16b},[$out],#16
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cmp $inp,$out
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b.hi .Loop_imc
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vld1.32 {v0.16b},[$out]
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aesimc v0.16b,v0.16b
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vst1.32 {v0.16b},[$inp]
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eor x0,x0,x0 // return value
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.Ldec_key_abort:
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___
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$code.=<<___ if ($flavour !~ /64/);
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ldmia sp!,{r4,pc}
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___
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$code.=<<___ if ($flavour =~ /64/);
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ldp x29,x30,[sp],#16
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ret
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___
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$code.=<<___;
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.size ${prefix}_set_decrypt_key,.-${prefix}_set_decrypt_key
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___
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}}}
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{{{
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sub gen_block () {
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my $dir = shift;
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my ($e,$mc) = $dir eq "en" ? ("e","mc") : ("d","imc");
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my ($inp,$out,$key)=map("x$_",(0..2));
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my $rounds="w3";
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my ($rndkey0,$rndkey1,$inout)=map("q$_",(0..3));
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$code.=<<___;
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.globl ${prefix}_${dir}crypt
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.type ${prefix}_${dir}crypt,%function
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.align 5
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${prefix}_${dir}crypt:
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ldr $rounds,[$key,#240]
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vld1.32 {$rndkey0},[$key],#16
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vld1.8 {$inout},[$inp]
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sub $rounds,$rounds,#2
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vld1.32 {$rndkey1},[$key],#16
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.Loop_${dir}c:
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aes$e $inout,$rndkey0
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aes$mc $inout,$inout
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vld1.32 {$rndkey0},[$key],#16
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subs $rounds,$rounds,#2
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aes$e $inout,$rndkey1
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aes$mc $inout,$inout
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vld1.32 {$rndkey1},[$key],#16
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b.gt .Loop_${dir}c
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aes$e $inout,$rndkey0
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aes$mc $inout,$inout
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vld1.32 {$rndkey0},[$key]
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aes$e $inout,$rndkey1
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veor $inout,$inout,$rndkey0
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vst1.8 {$inout},[$out]
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ret
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.size ${prefix}_${dir}crypt,.-${prefix}_${dir}crypt
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___
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}
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&gen_block("en");
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&gen_block("de");
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}}}
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{{{
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my ($inp,$out,$len,$key,$ivp)=map("x$_",(0..4)); my $enc="w5";
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my ($rounds,$cnt,$key_,$step,$step1)=($enc,"w6","x7","x8","x12");
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my ($dat0,$dat1,$in0,$in1,$tmp0,$tmp1,$ivec,$rndlast)=map("q$_",(0..7));
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my ($dat,$tmp,$rndzero_n_last)=($dat0,$tmp0,$tmp1);
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my ($key4,$key5,$key6,$key7)=("x6","x12","x14",$key);
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### q8-q15 preloaded key schedule
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$code.=<<___;
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.globl ${prefix}_cbc_encrypt
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.type ${prefix}_cbc_encrypt,%function
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.align 5
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${prefix}_cbc_encrypt:
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___
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$code.=<<___ if ($flavour =~ /64/);
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stp x29,x30,[sp,#-16]!
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add x29,sp,#0
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___
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$code.=<<___ if ($flavour !~ /64/);
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mov ip,sp
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stmdb sp!,{r4-r8,lr}
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vstmdb sp!,{d8-d15} @ ABI specification says so
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ldmia ip,{r4-r5} @ load remaining args
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___
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$code.=<<___;
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subs $len,$len,#16
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mov $step,#16
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b.lo .Lcbc_abort
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cclr $step,eq
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cmp $enc,#0 // en- or decrypting?
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ldr $rounds,[$key,#240]
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and $len,$len,#-16
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vld1.8 {$ivec},[$ivp]
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vld1.8 {$dat},[$inp],$step
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vld1.32 {q8-q9},[$key] // load key schedule...
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sub $rounds,$rounds,#6
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add $key_,$key,x5,lsl#4 // pointer to last 7 round keys
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sub $rounds,$rounds,#2
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vld1.32 {q10-q11},[$key_],#32
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vld1.32 {q12-q13},[$key_],#32
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vld1.32 {q14-q15},[$key_],#32
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vld1.32 {$rndlast},[$key_]
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add $key_,$key,#32
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mov $cnt,$rounds
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b.eq .Lcbc_dec
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cmp $rounds,#2
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veor $dat,$dat,$ivec
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veor $rndzero_n_last,q8,$rndlast
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b.eq .Lcbc_enc128
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vld1.32 {$in0-$in1},[$key_]
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add $key_,$key,#16
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add $key4,$key,#16*4
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add $key5,$key,#16*5
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aese $dat,q8
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aesmc $dat,$dat
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add $key6,$key,#16*6
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add $key7,$key,#16*7
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b .Lenter_cbc_enc
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.align 4
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.Loop_cbc_enc:
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aese $dat,q8
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aesmc $dat,$dat
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vst1.8 {$ivec},[$out],#16
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.Lenter_cbc_enc:
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aese $dat,q9
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aesmc $dat,$dat
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aese $dat,$in0
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aesmc $dat,$dat
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vld1.32 {q8},[$key4]
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cmp $rounds,#4
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aese $dat,$in1
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aesmc $dat,$dat
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vld1.32 {q9},[$key5]
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b.eq .Lcbc_enc192
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aese $dat,q8
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aesmc $dat,$dat
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vld1.32 {q8},[$key6]
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aese $dat,q9
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aesmc $dat,$dat
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vld1.32 {q9},[$key7]
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nop
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.Lcbc_enc192:
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aese $dat,q8
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aesmc $dat,$dat
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subs $len,$len,#16
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aese $dat,q9
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aesmc $dat,$dat
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cclr $step,eq
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aese $dat,q10
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aesmc $dat,$dat
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aese $dat,q11
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aesmc $dat,$dat
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vld1.8 {q8},[$inp],$step
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aese $dat,q12
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aesmc $dat,$dat
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veor q8,q8,$rndzero_n_last
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aese $dat,q13
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aesmc $dat,$dat
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vld1.32 {q9},[$key_] // re-pre-load rndkey[1]
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aese $dat,q14
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aesmc $dat,$dat
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aese $dat,q15
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veor $ivec,$dat,$rndlast
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b.hs .Loop_cbc_enc
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vst1.8 {$ivec},[$out],#16
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b .Lcbc_done
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.align 5
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.Lcbc_enc128:
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vld1.32 {$in0-$in1},[$key_]
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aese $dat,q8
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aesmc $dat,$dat
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b .Lenter_cbc_enc128
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.Loop_cbc_enc128:
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aese $dat,q8
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aesmc $dat,$dat
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vst1.8 {$ivec},[$out],#16
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.Lenter_cbc_enc128:
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aese $dat,q9
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aesmc $dat,$dat
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subs $len,$len,#16
|
|
aese $dat,$in0
|
|
aesmc $dat,$dat
|
|
cclr $step,eq
|
|
aese $dat,$in1
|
|
aesmc $dat,$dat
|
|
aese $dat,q10
|
|
aesmc $dat,$dat
|
|
aese $dat,q11
|
|
aesmc $dat,$dat
|
|
vld1.8 {q8},[$inp],$step
|
|
aese $dat,q12
|
|
aesmc $dat,$dat
|
|
aese $dat,q13
|
|
aesmc $dat,$dat
|
|
aese $dat,q14
|
|
aesmc $dat,$dat
|
|
veor q8,q8,$rndzero_n_last
|
|
aese $dat,q15
|
|
veor $ivec,$dat,$rndlast
|
|
b.hs .Loop_cbc_enc128
|
|
|
|
vst1.8 {$ivec},[$out],#16
|
|
b .Lcbc_done
|
|
___
|
|
{
|
|
my ($dat2,$in2,$tmp2)=map("q$_",(10,11,9));
|
|
$code.=<<___;
|
|
.align 5
|
|
.Lcbc_dec:
|
|
vld1.8 {$dat2},[$inp],#16
|
|
subs $len,$len,#32 // bias
|
|
add $cnt,$rounds,#2
|
|
vorr $in1,$dat,$dat
|
|
vorr $dat1,$dat,$dat
|
|
vorr $in2,$dat2,$dat2
|
|
b.lo .Lcbc_dec_tail
|
|
|
|
vorr $dat1,$dat2,$dat2
|
|
vld1.8 {$dat2},[$inp],#16
|
|
vorr $in0,$dat,$dat
|
|
vorr $in1,$dat1,$dat1
|
|
vorr $in2,$dat2,$dat2
|
|
|
|
.Loop3x_cbc_dec:
|
|
aesd $dat0,q8
|
|
aesimc $dat0,$dat0
|
|
aesd $dat1,q8
|
|
aesimc $dat1,$dat1
|
|
aesd $dat2,q8
|
|
aesimc $dat2,$dat2
|
|
vld1.32 {q8},[$key_],#16
|
|
subs $cnt,$cnt,#2
|
|
aesd $dat0,q9
|
|
aesimc $dat0,$dat0
|
|
aesd $dat1,q9
|
|
aesimc $dat1,$dat1
|
|
aesd $dat2,q9
|
|
aesimc $dat2,$dat2
|
|
vld1.32 {q9},[$key_],#16
|
|
b.gt .Loop3x_cbc_dec
|
|
|
|
aesd $dat0,q8
|
|
aesimc $dat0,$dat0
|
|
aesd $dat1,q8
|
|
aesimc $dat1,$dat1
|
|
aesd $dat2,q8
|
|
aesimc $dat2,$dat2
|
|
veor $tmp0,$ivec,$rndlast
|
|
subs $len,$len,#0x30
|
|
veor $tmp1,$in0,$rndlast
|
|
mov.lo x6,$len // x6, $cnt, is zero at this point
|
|
aesd $dat0,q9
|
|
aesimc $dat0,$dat0
|
|
aesd $dat1,q9
|
|
aesimc $dat1,$dat1
|
|
aesd $dat2,q9
|
|
aesimc $dat2,$dat2
|
|
veor $tmp2,$in1,$rndlast
|
|
add $inp,$inp,x6 // $inp is adjusted in such way that
|
|
// at exit from the loop $dat1-$dat2
|
|
// are loaded with last "words"
|
|
vorr $ivec,$in2,$in2
|
|
mov $key_,$key
|
|
aesd $dat0,q12
|
|
aesimc $dat0,$dat0
|
|
aesd $dat1,q12
|
|
aesimc $dat1,$dat1
|
|
aesd $dat2,q12
|
|
aesimc $dat2,$dat2
|
|
vld1.8 {$in0},[$inp],#16
|
|
aesd $dat0,q13
|
|
aesimc $dat0,$dat0
|
|
aesd $dat1,q13
|
|
aesimc $dat1,$dat1
|
|
aesd $dat2,q13
|
|
aesimc $dat2,$dat2
|
|
vld1.8 {$in1},[$inp],#16
|
|
aesd $dat0,q14
|
|
aesimc $dat0,$dat0
|
|
aesd $dat1,q14
|
|
aesimc $dat1,$dat1
|
|
aesd $dat2,q14
|
|
aesimc $dat2,$dat2
|
|
vld1.8 {$in2},[$inp],#16
|
|
aesd $dat0,q15
|
|
aesd $dat1,q15
|
|
aesd $dat2,q15
|
|
vld1.32 {q8},[$key_],#16 // re-pre-load rndkey[0]
|
|
add $cnt,$rounds,#2
|
|
veor $tmp0,$tmp0,$dat0
|
|
veor $tmp1,$tmp1,$dat1
|
|
veor $dat2,$dat2,$tmp2
|
|
vld1.32 {q9},[$key_],#16 // re-pre-load rndkey[1]
|
|
vst1.8 {$tmp0},[$out],#16
|
|
vorr $dat0,$in0,$in0
|
|
vst1.8 {$tmp1},[$out],#16
|
|
vorr $dat1,$in1,$in1
|
|
vst1.8 {$dat2},[$out],#16
|
|
vorr $dat2,$in2,$in2
|
|
b.hs .Loop3x_cbc_dec
|
|
|
|
cmn $len,#0x30
|
|
b.eq .Lcbc_done
|
|
nop
|
|
|
|
.Lcbc_dec_tail:
|
|
aesd $dat1,q8
|
|
aesimc $dat1,$dat1
|
|
aesd $dat2,q8
|
|
aesimc $dat2,$dat2
|
|
vld1.32 {q8},[$key_],#16
|
|
subs $cnt,$cnt,#2
|
|
aesd $dat1,q9
|
|
aesimc $dat1,$dat1
|
|
aesd $dat2,q9
|
|
aesimc $dat2,$dat2
|
|
vld1.32 {q9},[$key_],#16
|
|
b.gt .Lcbc_dec_tail
|
|
|
|
aesd $dat1,q8
|
|
aesimc $dat1,$dat1
|
|
aesd $dat2,q8
|
|
aesimc $dat2,$dat2
|
|
aesd $dat1,q9
|
|
aesimc $dat1,$dat1
|
|
aesd $dat2,q9
|
|
aesimc $dat2,$dat2
|
|
aesd $dat1,q12
|
|
aesimc $dat1,$dat1
|
|
aesd $dat2,q12
|
|
aesimc $dat2,$dat2
|
|
cmn $len,#0x20
|
|
aesd $dat1,q13
|
|
aesimc $dat1,$dat1
|
|
aesd $dat2,q13
|
|
aesimc $dat2,$dat2
|
|
veor $tmp1,$ivec,$rndlast
|
|
aesd $dat1,q14
|
|
aesimc $dat1,$dat1
|
|
aesd $dat2,q14
|
|
aesimc $dat2,$dat2
|
|
veor $tmp2,$in1,$rndlast
|
|
aesd $dat1,q15
|
|
aesd $dat2,q15
|
|
b.eq .Lcbc_dec_one
|
|
veor $tmp1,$tmp1,$dat1
|
|
veor $tmp2,$tmp2,$dat2
|
|
vorr $ivec,$in2,$in2
|
|
vst1.8 {$tmp1},[$out],#16
|
|
vst1.8 {$tmp2},[$out],#16
|
|
b .Lcbc_done
|
|
|
|
.Lcbc_dec_one:
|
|
veor $tmp1,$tmp1,$dat2
|
|
vorr $ivec,$in2,$in2
|
|
vst1.8 {$tmp1},[$out],#16
|
|
|
|
.Lcbc_done:
|
|
vst1.8 {$ivec},[$ivp]
|
|
.Lcbc_abort:
|
|
___
|
|
}
|
|
$code.=<<___ if ($flavour !~ /64/);
|
|
vldmia sp!,{d8-d15}
|
|
ldmia sp!,{r4-r8,pc}
|
|
___
|
|
$code.=<<___ if ($flavour =~ /64/);
|
|
ldr x29,[sp],#16
|
|
ret
|
|
___
|
|
$code.=<<___;
|
|
.size ${prefix}_cbc_encrypt,.-${prefix}_cbc_encrypt
|
|
___
|
|
}}}
|
|
{{{
|
|
my ($inp,$out,$len,$key,$ivp)=map("x$_",(0..4));
|
|
my ($rounds,$cnt,$key_)=("w5","w6","x7");
|
|
my ($ctr,$tctr0,$tctr1,$tctr2)=map("w$_",(8..10,12));
|
|
my $step="x12"; # aliases with $tctr2
|
|
|
|
my ($dat0,$dat1,$in0,$in1,$tmp0,$tmp1,$ivec,$rndlast)=map("q$_",(0..7));
|
|
my ($dat2,$in2,$tmp2)=map("q$_",(10,11,9));
|
|
|
|
my ($dat,$tmp)=($dat0,$tmp0);
|
|
|
|
### q8-q15 preloaded key schedule
|
|
|
|
$code.=<<___;
|
|
.globl ${prefix}_ctr32_encrypt_blocks
|
|
.type ${prefix}_ctr32_encrypt_blocks,%function
|
|
.align 5
|
|
${prefix}_ctr32_encrypt_blocks:
|
|
___
|
|
$code.=<<___ if ($flavour =~ /64/);
|
|
stp x29,x30,[sp,#-16]!
|
|
add x29,sp,#0
|
|
___
|
|
$code.=<<___ if ($flavour !~ /64/);
|
|
mov ip,sp
|
|
stmdb sp!,{r4-r10,lr}
|
|
vstmdb sp!,{d8-d15} @ ABI specification says so
|
|
ldr r4, [ip] @ load remaining arg
|
|
___
|
|
$code.=<<___;
|
|
ldr $rounds,[$key,#240]
|
|
|
|
ldr $ctr, [$ivp, #12]
|
|
vld1.32 {$dat0},[$ivp]
|
|
|
|
vld1.32 {q8-q9},[$key] // load key schedule...
|
|
sub $rounds,$rounds,#4
|
|
mov $step,#16
|
|
cmp $len,#2
|
|
add $key_,$key,x5,lsl#4 // pointer to last 5 round keys
|
|
sub $rounds,$rounds,#2
|
|
vld1.32 {q12-q13},[$key_],#32
|
|
vld1.32 {q14-q15},[$key_],#32
|
|
vld1.32 {$rndlast},[$key_]
|
|
add $key_,$key,#32
|
|
mov $cnt,$rounds
|
|
cclr $step,lo
|
|
#ifndef __ARMEB__
|
|
rev $ctr, $ctr
|
|
#endif
|
|
vorr $dat1,$dat0,$dat0
|
|
add $tctr1, $ctr, #1
|
|
vorr $dat2,$dat0,$dat0
|
|
add $ctr, $ctr, #2
|
|
vorr $ivec,$dat0,$dat0
|
|
rev $tctr1, $tctr1
|
|
vmov.32 ${dat1}[3],$tctr1
|
|
b.ls .Lctr32_tail
|
|
rev $tctr2, $ctr
|
|
sub $len,$len,#3 // bias
|
|
vmov.32 ${dat2}[3],$tctr2
|
|
b .Loop3x_ctr32
|
|
|
|
.align 4
|
|
.Loop3x_ctr32:
|
|
aese $dat0,q8
|
|
aesmc $dat0,$dat0
|
|
aese $dat1,q8
|
|
aesmc $dat1,$dat1
|
|
aese $dat2,q8
|
|
aesmc $dat2,$dat2
|
|
vld1.32 {q8},[$key_],#16
|
|
subs $cnt,$cnt,#2
|
|
aese $dat0,q9
|
|
aesmc $dat0,$dat0
|
|
aese $dat1,q9
|
|
aesmc $dat1,$dat1
|
|
aese $dat2,q9
|
|
aesmc $dat2,$dat2
|
|
vld1.32 {q9},[$key_],#16
|
|
b.gt .Loop3x_ctr32
|
|
|
|
aese $dat0,q8
|
|
aesmc $tmp0,$dat0
|
|
aese $dat1,q8
|
|
aesmc $tmp1,$dat1
|
|
vld1.8 {$in0},[$inp],#16
|
|
vorr $dat0,$ivec,$ivec
|
|
aese $dat2,q8
|
|
aesmc $dat2,$dat2
|
|
vld1.8 {$in1},[$inp],#16
|
|
vorr $dat1,$ivec,$ivec
|
|
aese $tmp0,q9
|
|
aesmc $tmp0,$tmp0
|
|
aese $tmp1,q9
|
|
aesmc $tmp1,$tmp1
|
|
vld1.8 {$in2},[$inp],#16
|
|
mov $key_,$key
|
|
aese $dat2,q9
|
|
aesmc $tmp2,$dat2
|
|
vorr $dat2,$ivec,$ivec
|
|
add $tctr0,$ctr,#1
|
|
aese $tmp0,q12
|
|
aesmc $tmp0,$tmp0
|
|
aese $tmp1,q12
|
|
aesmc $tmp1,$tmp1
|
|
veor $in0,$in0,$rndlast
|
|
add $tctr1,$ctr,#2
|
|
aese $tmp2,q12
|
|
aesmc $tmp2,$tmp2
|
|
veor $in1,$in1,$rndlast
|
|
add $ctr,$ctr,#3
|
|
aese $tmp0,q13
|
|
aesmc $tmp0,$tmp0
|
|
aese $tmp1,q13
|
|
aesmc $tmp1,$tmp1
|
|
veor $in2,$in2,$rndlast
|
|
rev $tctr0,$tctr0
|
|
aese $tmp2,q13
|
|
aesmc $tmp2,$tmp2
|
|
vmov.32 ${dat0}[3], $tctr0
|
|
rev $tctr1,$tctr1
|
|
aese $tmp0,q14
|
|
aesmc $tmp0,$tmp0
|
|
aese $tmp1,q14
|
|
aesmc $tmp1,$tmp1
|
|
vmov.32 ${dat1}[3], $tctr1
|
|
rev $tctr2,$ctr
|
|
aese $tmp2,q14
|
|
aesmc $tmp2,$tmp2
|
|
vmov.32 ${dat2}[3], $tctr2
|
|
subs $len,$len,#3
|
|
aese $tmp0,q15
|
|
aese $tmp1,q15
|
|
aese $tmp2,q15
|
|
|
|
veor $in0,$in0,$tmp0
|
|
vld1.32 {q8},[$key_],#16 // re-pre-load rndkey[0]
|
|
vst1.8 {$in0},[$out],#16
|
|
veor $in1,$in1,$tmp1
|
|
mov $cnt,$rounds
|
|
vst1.8 {$in1},[$out],#16
|
|
veor $in2,$in2,$tmp2
|
|
vld1.32 {q9},[$key_],#16 // re-pre-load rndkey[1]
|
|
vst1.8 {$in2},[$out],#16
|
|
b.hs .Loop3x_ctr32
|
|
|
|
adds $len,$len,#3
|
|
b.eq .Lctr32_done
|
|
cmp $len,#1
|
|
mov $step,#16
|
|
cclr $step,eq
|
|
|
|
.Lctr32_tail:
|
|
aese $dat0,q8
|
|
aesmc $dat0,$dat0
|
|
aese $dat1,q8
|
|
aesmc $dat1,$dat1
|
|
vld1.32 {q8},[$key_],#16
|
|
subs $cnt,$cnt,#2
|
|
aese $dat0,q9
|
|
aesmc $dat0,$dat0
|
|
aese $dat1,q9
|
|
aesmc $dat1,$dat1
|
|
vld1.32 {q9},[$key_],#16
|
|
b.gt .Lctr32_tail
|
|
|
|
aese $dat0,q8
|
|
aesmc $dat0,$dat0
|
|
aese $dat1,q8
|
|
aesmc $dat1,$dat1
|
|
aese $dat0,q9
|
|
aesmc $dat0,$dat0
|
|
aese $dat1,q9
|
|
aesmc $dat1,$dat1
|
|
vld1.8 {$in0},[$inp],$step
|
|
aese $dat0,q12
|
|
aesmc $dat0,$dat0
|
|
aese $dat1,q12
|
|
aesmc $dat1,$dat1
|
|
vld1.8 {$in1},[$inp]
|
|
aese $dat0,q13
|
|
aesmc $dat0,$dat0
|
|
aese $dat1,q13
|
|
aesmc $dat1,$dat1
|
|
veor $in0,$in0,$rndlast
|
|
aese $dat0,q14
|
|
aesmc $dat0,$dat0
|
|
aese $dat1,q14
|
|
aesmc $dat1,$dat1
|
|
veor $in1,$in1,$rndlast
|
|
aese $dat0,q15
|
|
aese $dat1,q15
|
|
|
|
cmp $len,#1
|
|
veor $in0,$in0,$dat0
|
|
veor $in1,$in1,$dat1
|
|
vst1.8 {$in0},[$out],#16
|
|
b.eq .Lctr32_done
|
|
vst1.8 {$in1},[$out]
|
|
|
|
.Lctr32_done:
|
|
___
|
|
$code.=<<___ if ($flavour !~ /64/);
|
|
vldmia sp!,{d8-d15}
|
|
ldmia sp!,{r4-r10,pc}
|
|
___
|
|
$code.=<<___ if ($flavour =~ /64/);
|
|
ldr x29,[sp],#16
|
|
ret
|
|
___
|
|
$code.=<<___;
|
|
.size ${prefix}_ctr32_encrypt_blocks,.-${prefix}_ctr32_encrypt_blocks
|
|
___
|
|
}}}
|
|
$code.=<<___;
|
|
#endif
|
|
___
|
|
########################################
|
|
if ($flavour =~ /64/) { ######## 64-bit code
|
|
my %opcode = (
|
|
"aesd" => 0x4e285800, "aese" => 0x4e284800,
|
|
"aesimc"=> 0x4e287800, "aesmc" => 0x4e286800 );
|
|
|
|
local *unaes = sub {
|
|
my ($mnemonic,$arg)=@_;
|
|
|
|
$arg =~ m/[qv]([0-9]+)[^,]*,\s*[qv]([0-9]+)/o &&
|
|
sprintf ".inst\t0x%08x\t//%s %s",
|
|
$opcode{$mnemonic}|$1|($2<<5),
|
|
$mnemonic,$arg;
|
|
};
|
|
|
|
foreach(split("\n",$code)) {
|
|
s/\`([^\`]*)\`/eval($1)/geo;
|
|
|
|
s/\bq([0-9]+)\b/"v".($1<8?$1:$1+8).".16b"/geo; # old->new registers
|
|
s/@\s/\/\//o; # old->new style commentary
|
|
|
|
#s/[v]?(aes\w+)\s+([qv].*)/unaes($1,$2)/geo or
|
|
s/cclr\s+([wx])([^,]+),\s*([a-z]+)/csel $1$2,$1zr,$1$2,$3/o or
|
|
s/mov\.([a-z]+)\s+([wx][0-9]+),\s*([wx][0-9]+)/csel $2,$3,$2,$1/o or
|
|
s/vmov\.i8/movi/o or # fix up legacy mnemonics
|
|
s/vext\.8/ext/o or
|
|
s/vrev32\.8/rev32/o or
|
|
s/vtst\.8/cmtst/o or
|
|
s/vshr/ushr/o or
|
|
s/^(\s+)v/$1/o or # strip off v prefix
|
|
s/\bbx\s+lr\b/ret/o;
|
|
|
|
# fix up remainig legacy suffixes
|
|
s/\.[ui]?8//o;
|
|
m/\],#8/o and s/\.16b/\.8b/go;
|
|
s/\.[ui]?32//o and s/\.16b/\.4s/go;
|
|
s/\.[ui]?64//o and s/\.16b/\.2d/go;
|
|
s/\.[42]([sd])\[([0-3])\]/\.$1\[$2\]/o;
|
|
|
|
print $_,"\n";
|
|
}
|
|
} else { ######## 32-bit code
|
|
my %opcode = (
|
|
"aesd" => 0xf3b00340, "aese" => 0xf3b00300,
|
|
"aesimc"=> 0xf3b003c0, "aesmc" => 0xf3b00380 );
|
|
|
|
local *unaes = sub {
|
|
my ($mnemonic,$arg)=@_;
|
|
|
|
if ($arg =~ m/[qv]([0-9]+)[^,]*,\s*[qv]([0-9]+)/o) {
|
|
my $word = $opcode{$mnemonic}|(($1&7)<<13)|(($1&8)<<19)
|
|
|(($2&7)<<1) |(($2&8)<<2);
|
|
# since ARMv7 instructions are always encoded little-endian.
|
|
# correct solution is to use .inst directive, but older
|
|
# assemblers don't implement it:-(
|
|
sprintf ".byte\t0x%02x,0x%02x,0x%02x,0x%02x\t@ %s %s",
|
|
$word&0xff,($word>>8)&0xff,
|
|
($word>>16)&0xff,($word>>24)&0xff,
|
|
$mnemonic,$arg;
|
|
}
|
|
};
|
|
|
|
sub unvtbl {
|
|
my $arg=shift;
|
|
|
|
$arg =~ m/q([0-9]+),\s*\{q([0-9]+)\},\s*q([0-9]+)/o &&
|
|
sprintf "vtbl.8 d%d,{q%d},d%d\n\t".
|
|
"vtbl.8 d%d,{q%d},d%d", 2*$1,$2,2*$3, 2*$1+1,$2,2*$3+1;
|
|
}
|
|
|
|
sub unvdup32 {
|
|
my $arg=shift;
|
|
|
|
$arg =~ m/q([0-9]+),\s*q([0-9]+)\[([0-3])\]/o &&
|
|
sprintf "vdup.32 q%d,d%d[%d]",$1,2*$2+($3>>1),$3&1;
|
|
}
|
|
|
|
sub unvmov32 {
|
|
my $arg=shift;
|
|
|
|
$arg =~ m/q([0-9]+)\[([0-3])\],(.*)/o &&
|
|
sprintf "vmov.32 d%d[%d],%s",2*$1+($2>>1),$2&1,$3;
|
|
}
|
|
|
|
foreach(split("\n",$code)) {
|
|
s/\`([^\`]*)\`/eval($1)/geo;
|
|
|
|
s/\b[wx]([0-9]+)\b/r$1/go; # new->old registers
|
|
s/\bv([0-9])\.[12468]+[bsd]\b/q$1/go; # new->old registers
|
|
s/\/\/\s?/@ /o; # new->old style commentary
|
|
|
|
# fix up remainig new-style suffixes
|
|
s/\{q([0-9]+)\},\s*\[(.+)\],#8/sprintf "{d%d},[$2]!",2*$1/eo or
|
|
s/\],#[0-9]+/]!/o;
|
|
|
|
s/[v]?(aes\w+)\s+([qv].*)/unaes($1,$2)/geo or
|
|
s/cclr\s+([^,]+),\s*([a-z]+)/mov$2 $1,#0/o or
|
|
s/vtbl\.8\s+(.*)/unvtbl($1)/geo or
|
|
s/vdup\.32\s+(.*)/unvdup32($1)/geo or
|
|
s/vmov\.32\s+(.*)/unvmov32($1)/geo or
|
|
s/^(\s+)b\./$1b/o or
|
|
s/^(\s+)mov\./$1mov/o or
|
|
s/^(\s+)ret/$1bx\tlr/o;
|
|
|
|
print $_,"\n";
|
|
}
|
|
}
|
|
|
|
close STDOUT;
|