+++ /dev/null
-#! /usr/bin/env perl
-# SPDX-License-Identifier: GPL-2.0
-
-# This code is taken from CRYPTOGAMs[1] and is included here using the option
-# in the license to distribute the code under the GPL. Therefore this program
-# is free software; you can redistribute it and/or modify it under the terms of
-# the GNU General Public License version 2 as published by the Free Software
-# Foundation.
-#
-# [1] https://www.openssl.org/~appro/cryptogams/
-
-# Copyright (c) 2006-2017, CRYPTOGAMS by <appro@openssl.org>
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-#
-# * Redistributions of source code must retain copyright notices,
-# this list of conditions and the following disclaimer.
-#
-# * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following
-# disclaimer in the documentation and/or other materials
-# provided with the distribution.
-#
-# * Neither the name of the CRYPTOGAMS nor the names of its
-# copyright holder and contributors may be used to endorse or
-# promote products derived from this software without specific
-# prior written permission.
-#
-# ALTERNATIVELY, provided that this notice is retained in full, this
-# product may be distributed under the terms of the GNU General Public
-# License (GPL), in which case the provisions of the GPL apply INSTEAD OF
-# those given above.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-# ====================================================================
-# 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 https://www.openssl.org/~appro/cryptogams/.
-# ====================================================================
-#
-# This module implements support for AES instructions as per PowerISA
-# specification version 2.07, first implemented by POWER8 processor.
-# The module is endian-agnostic in sense that it supports both big-
-# and little-endian cases. Data alignment in parallelizable modes is
-# handled with VSX loads and stores, which implies MSR.VSX flag being
-# set. It should also be noted that ISA specification doesn't prohibit
-# alignment exceptions for these instructions on page boundaries.
-# Initially alignment was handled in pure AltiVec/VMX way [when data
-# is aligned programmatically, which in turn guarantees exception-
-# free execution], but it turned to hamper performance when vcipher
-# instructions are interleaved. It's reckoned that eventual
-# misalignment penalties at page boundaries are in average lower
-# than additional overhead in pure AltiVec approach.
-#
-# May 2016
-#
-# Add XTS subroutine, 9x on little- and 12x improvement on big-endian
-# systems were measured.
-#
-######################################################################
-# Current large-block performance in cycles per byte processed with
-# 128-bit key (less is better).
-#
-# CBC en-/decrypt CTR XTS
-# POWER8[le] 3.96/0.72 0.74 1.1
-# POWER8[be] 3.75/0.65 0.66 1.0
-
-$flavour = shift;
-
-if ($flavour =~ /64/) {
- $SIZE_T =8;
- $LRSAVE =2*$SIZE_T;
- $STU ="stdu";
- $POP ="ld";
- $PUSH ="std";
- $UCMP ="cmpld";
- $SHL ="sldi";
-} elsif ($flavour =~ /32/) {
- $SIZE_T =4;
- $LRSAVE =$SIZE_T;
- $STU ="stwu";
- $POP ="lwz";
- $PUSH ="stw";
- $UCMP ="cmplw";
- $SHL ="slwi";
-} else { die "nonsense $flavour"; }
-
-$LITTLE_ENDIAN = ($flavour=~/le$/) ? $SIZE_T : 0;
-
-$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
-( $xlate="${dir}ppc-xlate.pl" and -f $xlate ) or
-( $xlate="${dir}../../perlasm/ppc-xlate.pl" and -f $xlate) or
-die "can't locate ppc-xlate.pl";
-
-open STDOUT,"| $^X $xlate $flavour ".shift || die "can't call $xlate: $!";
-
-$FRAME=8*$SIZE_T;
-$prefix="aes_p8";
-
-$sp="r1";
-$vrsave="r12";
-
-#########################################################################
-{{{ # Key setup procedures #
-my ($inp,$bits,$out,$ptr,$cnt,$rounds)=map("r$_",(3..8));
-my ($zero,$in0,$in1,$key,$rcon,$mask,$tmp)=map("v$_",(0..6));
-my ($stage,$outperm,$outmask,$outhead,$outtail)=map("v$_",(7..11));
-
-$code.=<<___;
-.machine "any"
-
-.text
-
-.align 7
-rcon:
-.long 0x01000000, 0x01000000, 0x01000000, 0x01000000 ?rev
-.long 0x1b000000, 0x1b000000, 0x1b000000, 0x1b000000 ?rev
-.long 0x0d0e0f0c, 0x0d0e0f0c, 0x0d0e0f0c, 0x0d0e0f0c ?rev
-.long 0,0,0,0 ?asis
-Lconsts:
- mflr r0
- bcl 20,31,\$+4
- mflr $ptr #vvvvv "distance between . and rcon
- addi $ptr,$ptr,-0x48
- mtlr r0
- blr
- .long 0
- .byte 0,12,0x14,0,0,0,0,0
-.asciz "AES for PowerISA 2.07, CRYPTOGAMS by <appro\@openssl.org>"
-
-.globl .${prefix}_set_encrypt_key
-Lset_encrypt_key:
- mflr r11
- $PUSH r11,$LRSAVE($sp)
-
- li $ptr,-1
- ${UCMP}i $inp,0
- beq- Lenc_key_abort # if ($inp==0) return -1;
- ${UCMP}i $out,0
- beq- Lenc_key_abort # if ($out==0) return -1;
- li $ptr,-2
- cmpwi $bits,128
- blt- Lenc_key_abort
- cmpwi $bits,256
- bgt- Lenc_key_abort
- andi. r0,$bits,0x3f
- bne- Lenc_key_abort
-
- lis r0,0xfff0
- mfspr $vrsave,256
- mtspr 256,r0
-
- bl Lconsts
- mtlr r11
-
- neg r9,$inp
- lvx $in0,0,$inp
- addi $inp,$inp,15 # 15 is not typo
- lvsr $key,0,r9 # borrow $key
- li r8,0x20
- cmpwi $bits,192
- lvx $in1,0,$inp
- le?vspltisb $mask,0x0f # borrow $mask
- lvx $rcon,0,$ptr
- le?vxor $key,$key,$mask # adjust for byte swap
- lvx $mask,r8,$ptr
- addi $ptr,$ptr,0x10
- vperm $in0,$in0,$in1,$key # align [and byte swap in LE]
- li $cnt,8
- vxor $zero,$zero,$zero
- mtctr $cnt
-
- ?lvsr $outperm,0,$out
- vspltisb $outmask,-1
- lvx $outhead,0,$out
- ?vperm $outmask,$zero,$outmask,$outperm
-
- blt Loop128
- addi $inp,$inp,8
- beq L192
- addi $inp,$inp,8
- b L256
-
-.align 4
-Loop128:
- vperm $key,$in0,$in0,$mask # rotate-n-splat
- vsldoi $tmp,$zero,$in0,12 # >>32
- vperm $outtail,$in0,$in0,$outperm # rotate
- vsel $stage,$outhead,$outtail,$outmask
- vmr $outhead,$outtail
- vcipherlast $key,$key,$rcon
- stvx $stage,0,$out
- addi $out,$out,16
-
- vxor $in0,$in0,$tmp
- vsldoi $tmp,$zero,$tmp,12 # >>32
- vxor $in0,$in0,$tmp
- vsldoi $tmp,$zero,$tmp,12 # >>32
- vxor $in0,$in0,$tmp
- vadduwm $rcon,$rcon,$rcon
- vxor $in0,$in0,$key
- bdnz Loop128
-
- lvx $rcon,0,$ptr # last two round keys
-
- vperm $key,$in0,$in0,$mask # rotate-n-splat
- vsldoi $tmp,$zero,$in0,12 # >>32
- vperm $outtail,$in0,$in0,$outperm # rotate
- vsel $stage,$outhead,$outtail,$outmask
- vmr $outhead,$outtail
- vcipherlast $key,$key,$rcon
- stvx $stage,0,$out
- addi $out,$out,16
-
- vxor $in0,$in0,$tmp
- vsldoi $tmp,$zero,$tmp,12 # >>32
- vxor $in0,$in0,$tmp
- vsldoi $tmp,$zero,$tmp,12 # >>32
- vxor $in0,$in0,$tmp
- vadduwm $rcon,$rcon,$rcon
- vxor $in0,$in0,$key
-
- vperm $key,$in0,$in0,$mask # rotate-n-splat
- vsldoi $tmp,$zero,$in0,12 # >>32
- vperm $outtail,$in0,$in0,$outperm # rotate
- vsel $stage,$outhead,$outtail,$outmask
- vmr $outhead,$outtail
- vcipherlast $key,$key,$rcon
- stvx $stage,0,$out
- addi $out,$out,16
-
- vxor $in0,$in0,$tmp
- vsldoi $tmp,$zero,$tmp,12 # >>32
- vxor $in0,$in0,$tmp
- vsldoi $tmp,$zero,$tmp,12 # >>32
- vxor $in0,$in0,$tmp
- vxor $in0,$in0,$key
- vperm $outtail,$in0,$in0,$outperm # rotate
- vsel $stage,$outhead,$outtail,$outmask
- vmr $outhead,$outtail
- stvx $stage,0,$out
-
- addi $inp,$out,15 # 15 is not typo
- addi $out,$out,0x50
-
- li $rounds,10
- b Ldone
-
-.align 4
-L192:
- lvx $tmp,0,$inp
- li $cnt,4
- vperm $outtail,$in0,$in0,$outperm # rotate
- vsel $stage,$outhead,$outtail,$outmask
- vmr $outhead,$outtail
- stvx $stage,0,$out
- addi $out,$out,16
- vperm $in1,$in1,$tmp,$key # align [and byte swap in LE]
- vspltisb $key,8 # borrow $key
- mtctr $cnt
- vsububm $mask,$mask,$key # adjust the mask
-
-Loop192:
- vperm $key,$in1,$in1,$mask # roate-n-splat
- vsldoi $tmp,$zero,$in0,12 # >>32
- vcipherlast $key,$key,$rcon
-
- vxor $in0,$in0,$tmp
- vsldoi $tmp,$zero,$tmp,12 # >>32
- vxor $in0,$in0,$tmp
- vsldoi $tmp,$zero,$tmp,12 # >>32
- vxor $in0,$in0,$tmp
-
- vsldoi $stage,$zero,$in1,8
- vspltw $tmp,$in0,3
- vxor $tmp,$tmp,$in1
- vsldoi $in1,$zero,$in1,12 # >>32
- vadduwm $rcon,$rcon,$rcon
- vxor $in1,$in1,$tmp
- vxor $in0,$in0,$key
- vxor $in1,$in1,$key
- vsldoi $stage,$stage,$in0,8
-
- vperm $key,$in1,$in1,$mask # rotate-n-splat
- vsldoi $tmp,$zero,$in0,12 # >>32
- vperm $outtail,$stage,$stage,$outperm # rotate
- vsel $stage,$outhead,$outtail,$outmask
- vmr $outhead,$outtail
- vcipherlast $key,$key,$rcon
- stvx $stage,0,$out
- addi $out,$out,16
-
- vsldoi $stage,$in0,$in1,8
- vxor $in0,$in0,$tmp
- vsldoi $tmp,$zero,$tmp,12 # >>32
- vperm $outtail,$stage,$stage,$outperm # rotate
- vsel $stage,$outhead,$outtail,$outmask
- vmr $outhead,$outtail
- vxor $in0,$in0,$tmp
- vsldoi $tmp,$zero,$tmp,12 # >>32
- vxor $in0,$in0,$tmp
- stvx $stage,0,$out
- addi $out,$out,16
-
- vspltw $tmp,$in0,3
- vxor $tmp,$tmp,$in1
- vsldoi $in1,$zero,$in1,12 # >>32
- vadduwm $rcon,$rcon,$rcon
- vxor $in1,$in1,$tmp
- vxor $in0,$in0,$key
- vxor $in1,$in1,$key
- vperm $outtail,$in0,$in0,$outperm # rotate
- vsel $stage,$outhead,$outtail,$outmask
- vmr $outhead,$outtail
- stvx $stage,0,$out
- addi $inp,$out,15 # 15 is not typo
- addi $out,$out,16
- bdnz Loop192
-
- li $rounds,12
- addi $out,$out,0x20
- b Ldone
-
-.align 4
-L256:
- lvx $tmp,0,$inp
- li $cnt,7
- li $rounds,14
- vperm $outtail,$in0,$in0,$outperm # rotate
- vsel $stage,$outhead,$outtail,$outmask
- vmr $outhead,$outtail
- stvx $stage,0,$out
- addi $out,$out,16
- vperm $in1,$in1,$tmp,$key # align [and byte swap in LE]
- mtctr $cnt
-
-Loop256:
- vperm $key,$in1,$in1,$mask # rotate-n-splat
- vsldoi $tmp,$zero,$in0,12 # >>32
- vperm $outtail,$in1,$in1,$outperm # rotate
- vsel $stage,$outhead,$outtail,$outmask
- vmr $outhead,$outtail
- vcipherlast $key,$key,$rcon
- stvx $stage,0,$out
- addi $out,$out,16
-
- vxor $in0,$in0,$tmp
- vsldoi $tmp,$zero,$tmp,12 # >>32
- vxor $in0,$in0,$tmp
- vsldoi $tmp,$zero,$tmp,12 # >>32
- vxor $in0,$in0,$tmp
- vadduwm $rcon,$rcon,$rcon
- vxor $in0,$in0,$key
- vperm $outtail,$in0,$in0,$outperm # rotate
- vsel $stage,$outhead,$outtail,$outmask
- vmr $outhead,$outtail
- stvx $stage,0,$out
- addi $inp,$out,15 # 15 is not typo
- addi $out,$out,16
- bdz Ldone
-
- vspltw $key,$in0,3 # just splat
- vsldoi $tmp,$zero,$in1,12 # >>32
- vsbox $key,$key
-
- vxor $in1,$in1,$tmp
- vsldoi $tmp,$zero,$tmp,12 # >>32
- vxor $in1,$in1,$tmp
- vsldoi $tmp,$zero,$tmp,12 # >>32
- vxor $in1,$in1,$tmp
-
- vxor $in1,$in1,$key
- b Loop256
-
-.align 4
-Ldone:
- lvx $in1,0,$inp # redundant in aligned case
- vsel $in1,$outhead,$in1,$outmask
- stvx $in1,0,$inp
- li $ptr,0
- mtspr 256,$vrsave
- stw $rounds,0($out)
-
-Lenc_key_abort:
- mr r3,$ptr
- blr
- .long 0
- .byte 0,12,0x14,1,0,0,3,0
- .long 0
-.size .${prefix}_set_encrypt_key,.-.${prefix}_set_encrypt_key
-
-.globl .${prefix}_set_decrypt_key
- $STU $sp,-$FRAME($sp)
- mflr r10
- $PUSH r10,$FRAME+$LRSAVE($sp)
- bl Lset_encrypt_key
- mtlr r10
-
- cmpwi r3,0
- bne- Ldec_key_abort
-
- slwi $cnt,$rounds,4
- subi $inp,$out,240 # first round key
- srwi $rounds,$rounds,1
- add $out,$inp,$cnt # last round key
- mtctr $rounds
-
-Ldeckey:
- lwz r0, 0($inp)
- lwz r6, 4($inp)
- lwz r7, 8($inp)
- lwz r8, 12($inp)
- addi $inp,$inp,16
- lwz r9, 0($out)
- lwz r10,4($out)
- lwz r11,8($out)
- lwz r12,12($out)
- stw r0, 0($out)
- stw r6, 4($out)
- stw r7, 8($out)
- stw r8, 12($out)
- subi $out,$out,16
- stw r9, -16($inp)
- stw r10,-12($inp)
- stw r11,-8($inp)
- stw r12,-4($inp)
- bdnz Ldeckey
-
- xor r3,r3,r3 # return value
-Ldec_key_abort:
- addi $sp,$sp,$FRAME
- blr
- .long 0
- .byte 0,12,4,1,0x80,0,3,0
- .long 0
-.size .${prefix}_set_decrypt_key,.-.${prefix}_set_decrypt_key
-___
-}}}
-#########################################################################
-{{{ # Single block en- and decrypt procedures #
-sub gen_block () {
-my $dir = shift;
-my $n = $dir eq "de" ? "n" : "";
-my ($inp,$out,$key,$rounds,$idx)=map("r$_",(3..7));
-
-$code.=<<___;
-.globl .${prefix}_${dir}crypt
- lwz $rounds,240($key)
- lis r0,0xfc00
- mfspr $vrsave,256
- li $idx,15 # 15 is not typo
- mtspr 256,r0
-
- lvx v0,0,$inp
- neg r11,$out
- lvx v1,$idx,$inp
- lvsl v2,0,$inp # inpperm
- le?vspltisb v4,0x0f
- ?lvsl v3,0,r11 # outperm
- le?vxor v2,v2,v4
- li $idx,16
- vperm v0,v0,v1,v2 # align [and byte swap in LE]
- lvx v1,0,$key
- ?lvsl v5,0,$key # keyperm
- srwi $rounds,$rounds,1
- lvx v2,$idx,$key
- addi $idx,$idx,16
- subi $rounds,$rounds,1
- ?vperm v1,v1,v2,v5 # align round key
-
- vxor v0,v0,v1
- lvx v1,$idx,$key
- addi $idx,$idx,16
- mtctr $rounds
-
-Loop_${dir}c:
- ?vperm v2,v2,v1,v5
- v${n}cipher v0,v0,v2
- lvx v2,$idx,$key
- addi $idx,$idx,16
- ?vperm v1,v1,v2,v5
- v${n}cipher v0,v0,v1
- lvx v1,$idx,$key
- addi $idx,$idx,16
- bdnz Loop_${dir}c
-
- ?vperm v2,v2,v1,v5
- v${n}cipher v0,v0,v2
- lvx v2,$idx,$key
- ?vperm v1,v1,v2,v5
- v${n}cipherlast v0,v0,v1
-
- vspltisb v2,-1
- vxor v1,v1,v1
- li $idx,15 # 15 is not typo
- ?vperm v2,v1,v2,v3 # outmask
- le?vxor v3,v3,v4
- lvx v1,0,$out # outhead
- vperm v0,v0,v0,v3 # rotate [and byte swap in LE]
- vsel v1,v1,v0,v2
- lvx v4,$idx,$out
- stvx v1,0,$out
- vsel v0,v0,v4,v2
- stvx v0,$idx,$out
-
- mtspr 256,$vrsave
- blr
- .long 0
- .byte 0,12,0x14,0,0,0,3,0
- .long 0
-.size .${prefix}_${dir}crypt,.-.${prefix}_${dir}crypt
-___
-}
-&gen_block("en");
-&gen_block("de");
-}}}
-#########################################################################
-{{{ # CBC en- and decrypt procedures #
-my ($inp,$out,$len,$key,$ivp,$enc,$rounds,$idx)=map("r$_",(3..10));
-my ($rndkey0,$rndkey1,$inout,$tmp)= map("v$_",(0..3));
-my ($ivec,$inptail,$inpperm,$outhead,$outperm,$outmask,$keyperm)=
- map("v$_",(4..10));
-$code.=<<___;
-.globl .${prefix}_cbc_encrypt
- ${UCMP}i $len,16
- bltlr-
-
- cmpwi $enc,0 # test direction
- lis r0,0xffe0
- mfspr $vrsave,256
- mtspr 256,r0
-
- li $idx,15
- vxor $rndkey0,$rndkey0,$rndkey0
- le?vspltisb $tmp,0x0f
-
- lvx $ivec,0,$ivp # load [unaligned] iv
- lvsl $inpperm,0,$ivp
- lvx $inptail,$idx,$ivp
- le?vxor $inpperm,$inpperm,$tmp
- vperm $ivec,$ivec,$inptail,$inpperm
-
- neg r11,$inp
- ?lvsl $keyperm,0,$key # prepare for unaligned key
- lwz $rounds,240($key)
-
- lvsr $inpperm,0,r11 # prepare for unaligned load
- lvx $inptail,0,$inp
- addi $inp,$inp,15 # 15 is not typo
- le?vxor $inpperm,$inpperm,$tmp
-
- ?lvsr $outperm,0,$out # prepare for unaligned store
- vspltisb $outmask,-1
- lvx $outhead,0,$out
- ?vperm $outmask,$rndkey0,$outmask,$outperm
- le?vxor $outperm,$outperm,$tmp
-
- srwi $rounds,$rounds,1
- li $idx,16
- subi $rounds,$rounds,1
- beq Lcbc_dec
-
-Lcbc_enc:
- vmr $inout,$inptail
- lvx $inptail,0,$inp
- addi $inp,$inp,16
- mtctr $rounds
- subi $len,$len,16 # len-=16
-
- lvx $rndkey0,0,$key
- vperm $inout,$inout,$inptail,$inpperm
- lvx $rndkey1,$idx,$key
- addi $idx,$idx,16
- ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm
- vxor $inout,$inout,$rndkey0
- lvx $rndkey0,$idx,$key
- addi $idx,$idx,16
- vxor $inout,$inout,$ivec
-
-Loop_cbc_enc:
- ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm
- vcipher $inout,$inout,$rndkey1
- lvx $rndkey1,$idx,$key
- addi $idx,$idx,16
- ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm
- vcipher $inout,$inout,$rndkey0
- lvx $rndkey0,$idx,$key
- addi $idx,$idx,16
- bdnz Loop_cbc_enc
-
- ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm
- vcipher $inout,$inout,$rndkey1
- lvx $rndkey1,$idx,$key
- li $idx,16
- ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm
- vcipherlast $ivec,$inout,$rndkey0
- ${UCMP}i $len,16
-
- vperm $tmp,$ivec,$ivec,$outperm
- vsel $inout,$outhead,$tmp,$outmask
- vmr $outhead,$tmp
- stvx $inout,0,$out
- addi $out,$out,16
- bge Lcbc_enc
-
- b Lcbc_done
-
-.align 4
-Lcbc_dec:
- ${UCMP}i $len,128
- bge _aesp8_cbc_decrypt8x
- vmr $tmp,$inptail
- lvx $inptail,0,$inp
- addi $inp,$inp,16
- mtctr $rounds
- subi $len,$len,16 # len-=16
-
- lvx $rndkey0,0,$key
- vperm $tmp,$tmp,$inptail,$inpperm
- lvx $rndkey1,$idx,$key
- addi $idx,$idx,16
- ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm
- vxor $inout,$tmp,$rndkey0
- lvx $rndkey0,$idx,$key
- addi $idx,$idx,16
-
-Loop_cbc_dec:
- ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm
- vncipher $inout,$inout,$rndkey1
- lvx $rndkey1,$idx,$key
- addi $idx,$idx,16
- ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm
- vncipher $inout,$inout,$rndkey0
- lvx $rndkey0,$idx,$key
- addi $idx,$idx,16
- bdnz Loop_cbc_dec
-
- ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm
- vncipher $inout,$inout,$rndkey1
- lvx $rndkey1,$idx,$key
- li $idx,16
- ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm
- vncipherlast $inout,$inout,$rndkey0
- ${UCMP}i $len,16
-
- vxor $inout,$inout,$ivec
- vmr $ivec,$tmp
- vperm $tmp,$inout,$inout,$outperm
- vsel $inout,$outhead,$tmp,$outmask
- vmr $outhead,$tmp
- stvx $inout,0,$out
- addi $out,$out,16
- bge Lcbc_dec
-
-Lcbc_done:
- addi $out,$out,-1
- lvx $inout,0,$out # redundant in aligned case
- vsel $inout,$outhead,$inout,$outmask
- stvx $inout,0,$out
-
- neg $enc,$ivp # write [unaligned] iv
- li $idx,15 # 15 is not typo
- vxor $rndkey0,$rndkey0,$rndkey0
- vspltisb $outmask,-1
- le?vspltisb $tmp,0x0f
- ?lvsl $outperm,0,$enc
- ?vperm $outmask,$rndkey0,$outmask,$outperm
- le?vxor $outperm,$outperm,$tmp
- lvx $outhead,0,$ivp
- vperm $ivec,$ivec,$ivec,$outperm
- vsel $inout,$outhead,$ivec,$outmask
- lvx $inptail,$idx,$ivp
- stvx $inout,0,$ivp
- vsel $inout,$ivec,$inptail,$outmask
- stvx $inout,$idx,$ivp
-
- mtspr 256,$vrsave
- blr
- .long 0
- .byte 0,12,0x14,0,0,0,6,0
- .long 0
-___
-#########################################################################
-{{ # Optimized CBC decrypt procedure #
-my $key_="r11";
-my ($x00,$x10,$x20,$x30,$x40,$x50,$x60,$x70)=map("r$_",(0,8,26..31));
-my ($in0, $in1, $in2, $in3, $in4, $in5, $in6, $in7 )=map("v$_",(0..3,10..13));
-my ($out0,$out1,$out2,$out3,$out4,$out5,$out6,$out7)=map("v$_",(14..21));
-my $rndkey0="v23"; # v24-v25 rotating buffer for first found keys
- # v26-v31 last 6 round keys
-my ($tmp,$keyperm)=($in3,$in4); # aliases with "caller", redundant assignment
-
-$code.=<<___;
-.align 5
-_aesp8_cbc_decrypt8x:
- $STU $sp,-`($FRAME+21*16+6*$SIZE_T)`($sp)
- li r10,`$FRAME+8*16+15`
- li r11,`$FRAME+8*16+31`
- stvx v20,r10,$sp # ABI says so
- addi r10,r10,32
- stvx v21,r11,$sp
- addi r11,r11,32
- stvx v22,r10,$sp
- addi r10,r10,32
- stvx v23,r11,$sp
- addi r11,r11,32
- stvx v24,r10,$sp
- addi r10,r10,32
- stvx v25,r11,$sp
- addi r11,r11,32
- stvx v26,r10,$sp
- addi r10,r10,32
- stvx v27,r11,$sp
- addi r11,r11,32
- stvx v28,r10,$sp
- addi r10,r10,32
- stvx v29,r11,$sp
- addi r11,r11,32
- stvx v30,r10,$sp
- stvx v31,r11,$sp
- li r0,-1
- stw $vrsave,`$FRAME+21*16-4`($sp) # save vrsave
- li $x10,0x10
- $PUSH r26,`$FRAME+21*16+0*$SIZE_T`($sp)
- li $x20,0x20
- $PUSH r27,`$FRAME+21*16+1*$SIZE_T`($sp)
- li $x30,0x30
- $PUSH r28,`$FRAME+21*16+2*$SIZE_T`($sp)
- li $x40,0x40
- $PUSH r29,`$FRAME+21*16+3*$SIZE_T`($sp)
- li $x50,0x50
- $PUSH r30,`$FRAME+21*16+4*$SIZE_T`($sp)
- li $x60,0x60
- $PUSH r31,`$FRAME+21*16+5*$SIZE_T`($sp)
- li $x70,0x70
- mtspr 256,r0
-
- subi $rounds,$rounds,3 # -4 in total
- subi $len,$len,128 # bias
-
- lvx $rndkey0,$x00,$key # load key schedule
- lvx v30,$x10,$key
- addi $key,$key,0x20
- lvx v31,$x00,$key
- ?vperm $rndkey0,$rndkey0,v30,$keyperm
- addi $key_,$sp,$FRAME+15
- mtctr $rounds
-
-Load_cbc_dec_key:
- ?vperm v24,v30,v31,$keyperm
- lvx v30,$x10,$key
- addi $key,$key,0x20
- stvx v24,$x00,$key_ # off-load round[1]
- ?vperm v25,v31,v30,$keyperm
- lvx v31,$x00,$key
- stvx v25,$x10,$key_ # off-load round[2]
- addi $key_,$key_,0x20
- bdnz Load_cbc_dec_key
-
- lvx v26,$x10,$key
- ?vperm v24,v30,v31,$keyperm
- lvx v27,$x20,$key
- stvx v24,$x00,$key_ # off-load round[3]
- ?vperm v25,v31,v26,$keyperm
- lvx v28,$x30,$key
- stvx v25,$x10,$key_ # off-load round[4]
- addi $key_,$sp,$FRAME+15 # rewind $key_
- ?vperm v26,v26,v27,$keyperm
- lvx v29,$x40,$key
- ?vperm v27,v27,v28,$keyperm
- lvx v30,$x50,$key
- ?vperm v28,v28,v29,$keyperm
- lvx v31,$x60,$key
- ?vperm v29,v29,v30,$keyperm
- lvx $out0,$x70,$key # borrow $out0
- ?vperm v30,v30,v31,$keyperm
- lvx v24,$x00,$key_ # pre-load round[1]
- ?vperm v31,v31,$out0,$keyperm
- lvx v25,$x10,$key_ # pre-load round[2]
-
- #lvx $inptail,0,$inp # "caller" already did this
- #addi $inp,$inp,15 # 15 is not typo
- subi $inp,$inp,15 # undo "caller"
-
- le?li $idx,8
- lvx_u $in0,$x00,$inp # load first 8 "words"
- le?lvsl $inpperm,0,$idx
- le?vspltisb $tmp,0x0f
- lvx_u $in1,$x10,$inp
- le?vxor $inpperm,$inpperm,$tmp # transform for lvx_u/stvx_u
- lvx_u $in2,$x20,$inp
- le?vperm $in0,$in0,$in0,$inpperm
- lvx_u $in3,$x30,$inp
- le?vperm $in1,$in1,$in1,$inpperm
- lvx_u $in4,$x40,$inp
- le?vperm $in2,$in2,$in2,$inpperm
- vxor $out0,$in0,$rndkey0
- lvx_u $in5,$x50,$inp
- le?vperm $in3,$in3,$in3,$inpperm
- vxor $out1,$in1,$rndkey0
- lvx_u $in6,$x60,$inp
- le?vperm $in4,$in4,$in4,$inpperm
- vxor $out2,$in2,$rndkey0
- lvx_u $in7,$x70,$inp
- addi $inp,$inp,0x80
- le?vperm $in5,$in5,$in5,$inpperm
- vxor $out3,$in3,$rndkey0
- le?vperm $in6,$in6,$in6,$inpperm
- vxor $out4,$in4,$rndkey0
- le?vperm $in7,$in7,$in7,$inpperm
- vxor $out5,$in5,$rndkey0
- vxor $out6,$in6,$rndkey0
- vxor $out7,$in7,$rndkey0
-
- mtctr $rounds
- b Loop_cbc_dec8x
-.align 5
-Loop_cbc_dec8x:
- vncipher $out0,$out0,v24
- vncipher $out1,$out1,v24
- vncipher $out2,$out2,v24
- vncipher $out3,$out3,v24
- vncipher $out4,$out4,v24
- vncipher $out5,$out5,v24
- vncipher $out6,$out6,v24
- vncipher $out7,$out7,v24
- lvx v24,$x20,$key_ # round[3]
- addi $key_,$key_,0x20
-
- vncipher $out0,$out0,v25
- vncipher $out1,$out1,v25
- vncipher $out2,$out2,v25
- vncipher $out3,$out3,v25
- vncipher $out4,$out4,v25
- vncipher $out5,$out5,v25
- vncipher $out6,$out6,v25
- vncipher $out7,$out7,v25
- lvx v25,$x10,$key_ # round[4]
- bdnz Loop_cbc_dec8x
-
- subic $len,$len,128 # $len-=128
- vncipher $out0,$out0,v24
- vncipher $out1,$out1,v24
- vncipher $out2,$out2,v24
- vncipher $out3,$out3,v24
- vncipher $out4,$out4,v24
- vncipher $out5,$out5,v24
- vncipher $out6,$out6,v24
- vncipher $out7,$out7,v24
-
- subfe. r0,r0,r0 # borrow?-1:0
- vncipher $out0,$out0,v25
- vncipher $out1,$out1,v25
- vncipher $out2,$out2,v25
- vncipher $out3,$out3,v25
- vncipher $out4,$out4,v25
- vncipher $out5,$out5,v25
- vncipher $out6,$out6,v25
- vncipher $out7,$out7,v25
-
- and r0,r0,$len
- vncipher $out0,$out0,v26
- vncipher $out1,$out1,v26
- vncipher $out2,$out2,v26
- vncipher $out3,$out3,v26
- vncipher $out4,$out4,v26
- vncipher $out5,$out5,v26
- vncipher $out6,$out6,v26
- vncipher $out7,$out7,v26
-
- add $inp,$inp,r0 # $inp is adjusted in such
- # way that at exit from the
- # loop inX-in7 are loaded
- # with last "words"
- vncipher $out0,$out0,v27
- vncipher $out1,$out1,v27
- vncipher $out2,$out2,v27
- vncipher $out3,$out3,v27
- vncipher $out4,$out4,v27
- vncipher $out5,$out5,v27
- vncipher $out6,$out6,v27
- vncipher $out7,$out7,v27
-
- addi $key_,$sp,$FRAME+15 # rewind $key_
- vncipher $out0,$out0,v28
- vncipher $out1,$out1,v28
- vncipher $out2,$out2,v28
- vncipher $out3,$out3,v28
- vncipher $out4,$out4,v28
- vncipher $out5,$out5,v28
- vncipher $out6,$out6,v28
- vncipher $out7,$out7,v28
- lvx v24,$x00,$key_ # re-pre-load round[1]
-
- vncipher $out0,$out0,v29
- vncipher $out1,$out1,v29
- vncipher $out2,$out2,v29
- vncipher $out3,$out3,v29
- vncipher $out4,$out4,v29
- vncipher $out5,$out5,v29
- vncipher $out6,$out6,v29
- vncipher $out7,$out7,v29
- lvx v25,$x10,$key_ # re-pre-load round[2]
-
- vncipher $out0,$out0,v30
- vxor $ivec,$ivec,v31 # xor with last round key
- vncipher $out1,$out1,v30
- vxor $in0,$in0,v31
- vncipher $out2,$out2,v30
- vxor $in1,$in1,v31
- vncipher $out3,$out3,v30
- vxor $in2,$in2,v31
- vncipher $out4,$out4,v30
- vxor $in3,$in3,v31
- vncipher $out5,$out5,v30
- vxor $in4,$in4,v31
- vncipher $out6,$out6,v30
- vxor $in5,$in5,v31
- vncipher $out7,$out7,v30
- vxor $in6,$in6,v31
-
- vncipherlast $out0,$out0,$ivec
- vncipherlast $out1,$out1,$in0
- lvx_u $in0,$x00,$inp # load next input block
- vncipherlast $out2,$out2,$in1
- lvx_u $in1,$x10,$inp
- vncipherlast $out3,$out3,$in2
- le?vperm $in0,$in0,$in0,$inpperm
- lvx_u $in2,$x20,$inp
- vncipherlast $out4,$out4,$in3
- le?vperm $in1,$in1,$in1,$inpperm
- lvx_u $in3,$x30,$inp
- vncipherlast $out5,$out5,$in4
- le?vperm $in2,$in2,$in2,$inpperm
- lvx_u $in4,$x40,$inp
- vncipherlast $out6,$out6,$in5
- le?vperm $in3,$in3,$in3,$inpperm
- lvx_u $in5,$x50,$inp
- vncipherlast $out7,$out7,$in6
- le?vperm $in4,$in4,$in4,$inpperm
- lvx_u $in6,$x60,$inp
- vmr $ivec,$in7
- le?vperm $in5,$in5,$in5,$inpperm
- lvx_u $in7,$x70,$inp
- addi $inp,$inp,0x80
-
- le?vperm $out0,$out0,$out0,$inpperm
- le?vperm $out1,$out1,$out1,$inpperm
- stvx_u $out0,$x00,$out
- le?vperm $in6,$in6,$in6,$inpperm
- vxor $out0,$in0,$rndkey0
- le?vperm $out2,$out2,$out2,$inpperm
- stvx_u $out1,$x10,$out
- le?vperm $in7,$in7,$in7,$inpperm
- vxor $out1,$in1,$rndkey0
- le?vperm $out3,$out3,$out3,$inpperm
- stvx_u $out2,$x20,$out
- vxor $out2,$in2,$rndkey0
- le?vperm $out4,$out4,$out4,$inpperm
- stvx_u $out3,$x30,$out
- vxor $out3,$in3,$rndkey0
- le?vperm $out5,$out5,$out5,$inpperm
- stvx_u $out4,$x40,$out
- vxor $out4,$in4,$rndkey0
- le?vperm $out6,$out6,$out6,$inpperm
- stvx_u $out5,$x50,$out
- vxor $out5,$in5,$rndkey0
- le?vperm $out7,$out7,$out7,$inpperm
- stvx_u $out6,$x60,$out
- vxor $out6,$in6,$rndkey0
- stvx_u $out7,$x70,$out
- addi $out,$out,0x80
- vxor $out7,$in7,$rndkey0
-
- mtctr $rounds
- beq Loop_cbc_dec8x # did $len-=128 borrow?
-
- addic. $len,$len,128
- beq Lcbc_dec8x_done
- nop
- nop
-
-Loop_cbc_dec8x_tail: # up to 7 "words" tail...
- vncipher $out1,$out1,v24
- vncipher $out2,$out2,v24
- vncipher $out3,$out3,v24
- vncipher $out4,$out4,v24
- vncipher $out5,$out5,v24
- vncipher $out6,$out6,v24
- vncipher $out7,$out7,v24
- lvx v24,$x20,$key_ # round[3]
- addi $key_,$key_,0x20
-
- vncipher $out1,$out1,v25
- vncipher $out2,$out2,v25
- vncipher $out3,$out3,v25
- vncipher $out4,$out4,v25
- vncipher $out5,$out5,v25
- vncipher $out6,$out6,v25
- vncipher $out7,$out7,v25
- lvx v25,$x10,$key_ # round[4]
- bdnz Loop_cbc_dec8x_tail
-
- vncipher $out1,$out1,v24
- vncipher $out2,$out2,v24
- vncipher $out3,$out3,v24
- vncipher $out4,$out4,v24
- vncipher $out5,$out5,v24
- vncipher $out6,$out6,v24
- vncipher $out7,$out7,v24
-
- vncipher $out1,$out1,v25
- vncipher $out2,$out2,v25
- vncipher $out3,$out3,v25
- vncipher $out4,$out4,v25
- vncipher $out5,$out5,v25
- vncipher $out6,$out6,v25
- vncipher $out7,$out7,v25
-
- vncipher $out1,$out1,v26
- vncipher $out2,$out2,v26
- vncipher $out3,$out3,v26
- vncipher $out4,$out4,v26
- vncipher $out5,$out5,v26
- vncipher $out6,$out6,v26
- vncipher $out7,$out7,v26
-
- vncipher $out1,$out1,v27
- vncipher $out2,$out2,v27
- vncipher $out3,$out3,v27
- vncipher $out4,$out4,v27
- vncipher $out5,$out5,v27
- vncipher $out6,$out6,v27
- vncipher $out7,$out7,v27
-
- vncipher $out1,$out1,v28
- vncipher $out2,$out2,v28
- vncipher $out3,$out3,v28
- vncipher $out4,$out4,v28
- vncipher $out5,$out5,v28
- vncipher $out6,$out6,v28
- vncipher $out7,$out7,v28
-
- vncipher $out1,$out1,v29
- vncipher $out2,$out2,v29
- vncipher $out3,$out3,v29
- vncipher $out4,$out4,v29
- vncipher $out5,$out5,v29
- vncipher $out6,$out6,v29
- vncipher $out7,$out7,v29
-
- vncipher $out1,$out1,v30
- vxor $ivec,$ivec,v31 # last round key
- vncipher $out2,$out2,v30
- vxor $in1,$in1,v31
- vncipher $out3,$out3,v30
- vxor $in2,$in2,v31
- vncipher $out4,$out4,v30
- vxor $in3,$in3,v31
- vncipher $out5,$out5,v30
- vxor $in4,$in4,v31
- vncipher $out6,$out6,v30
- vxor $in5,$in5,v31
- vncipher $out7,$out7,v30
- vxor $in6,$in6,v31
-
- cmplwi $len,32 # switch($len)
- blt Lcbc_dec8x_one
- nop
- beq Lcbc_dec8x_two
- cmplwi $len,64
- blt Lcbc_dec8x_three
- nop
- beq Lcbc_dec8x_four
- cmplwi $len,96
- blt Lcbc_dec8x_five
- nop
- beq Lcbc_dec8x_six
-
-Lcbc_dec8x_seven:
- vncipherlast $out1,$out1,$ivec
- vncipherlast $out2,$out2,$in1
- vncipherlast $out3,$out3,$in2
- vncipherlast $out4,$out4,$in3
- vncipherlast $out5,$out5,$in4
- vncipherlast $out6,$out6,$in5
- vncipherlast $out7,$out7,$in6
- vmr $ivec,$in7
-
- le?vperm $out1,$out1,$out1,$inpperm
- le?vperm $out2,$out2,$out2,$inpperm
- stvx_u $out1,$x00,$out
- le?vperm $out3,$out3,$out3,$inpperm
- stvx_u $out2,$x10,$out
- le?vperm $out4,$out4,$out4,$inpperm
- stvx_u $out3,$x20,$out
- le?vperm $out5,$out5,$out5,$inpperm
- stvx_u $out4,$x30,$out
- le?vperm $out6,$out6,$out6,$inpperm
- stvx_u $out5,$x40,$out
- le?vperm $out7,$out7,$out7,$inpperm
- stvx_u $out6,$x50,$out
- stvx_u $out7,$x60,$out
- addi $out,$out,0x70
- b Lcbc_dec8x_done
-
-.align 5
-Lcbc_dec8x_six:
- vncipherlast $out2,$out2,$ivec
- vncipherlast $out3,$out3,$in2
- vncipherlast $out4,$out4,$in3
- vncipherlast $out5,$out5,$in4
- vncipherlast $out6,$out6,$in5
- vncipherlast $out7,$out7,$in6
- vmr $ivec,$in7
-
- le?vperm $out2,$out2,$out2,$inpperm
- le?vperm $out3,$out3,$out3,$inpperm
- stvx_u $out2,$x00,$out
- le?vperm $out4,$out4,$out4,$inpperm
- stvx_u $out3,$x10,$out
- le?vperm $out5,$out5,$out5,$inpperm
- stvx_u $out4,$x20,$out
- le?vperm $out6,$out6,$out6,$inpperm
- stvx_u $out5,$x30,$out
- le?vperm $out7,$out7,$out7,$inpperm
- stvx_u $out6,$x40,$out
- stvx_u $out7,$x50,$out
- addi $out,$out,0x60
- b Lcbc_dec8x_done
-
-.align 5
-Lcbc_dec8x_five:
- vncipherlast $out3,$out3,$ivec
- vncipherlast $out4,$out4,$in3
- vncipherlast $out5,$out5,$in4
- vncipherlast $out6,$out6,$in5
- vncipherlast $out7,$out7,$in6
- vmr $ivec,$in7
-
- le?vperm $out3,$out3,$out3,$inpperm
- le?vperm $out4,$out4,$out4,$inpperm
- stvx_u $out3,$x00,$out
- le?vperm $out5,$out5,$out5,$inpperm
- stvx_u $out4,$x10,$out
- le?vperm $out6,$out6,$out6,$inpperm
- stvx_u $out5,$x20,$out
- le?vperm $out7,$out7,$out7,$inpperm
- stvx_u $out6,$x30,$out
- stvx_u $out7,$x40,$out
- addi $out,$out,0x50
- b Lcbc_dec8x_done
-
-.align 5
-Lcbc_dec8x_four:
- vncipherlast $out4,$out4,$ivec
- vncipherlast $out5,$out5,$in4
- vncipherlast $out6,$out6,$in5
- vncipherlast $out7,$out7,$in6
- vmr $ivec,$in7
-
- le?vperm $out4,$out4,$out4,$inpperm
- le?vperm $out5,$out5,$out5,$inpperm
- stvx_u $out4,$x00,$out
- le?vperm $out6,$out6,$out6,$inpperm
- stvx_u $out5,$x10,$out
- le?vperm $out7,$out7,$out7,$inpperm
- stvx_u $out6,$x20,$out
- stvx_u $out7,$x30,$out
- addi $out,$out,0x40
- b Lcbc_dec8x_done
-
-.align 5
-Lcbc_dec8x_three:
- vncipherlast $out5,$out5,$ivec
- vncipherlast $out6,$out6,$in5
- vncipherlast $out7,$out7,$in6
- vmr $ivec,$in7
-
- le?vperm $out5,$out5,$out5,$inpperm
- le?vperm $out6,$out6,$out6,$inpperm
- stvx_u $out5,$x00,$out
- le?vperm $out7,$out7,$out7,$inpperm
- stvx_u $out6,$x10,$out
- stvx_u $out7,$x20,$out
- addi $out,$out,0x30
- b Lcbc_dec8x_done
-
-.align 5
-Lcbc_dec8x_two:
- vncipherlast $out6,$out6,$ivec
- vncipherlast $out7,$out7,$in6
- vmr $ivec,$in7
-
- le?vperm $out6,$out6,$out6,$inpperm
- le?vperm $out7,$out7,$out7,$inpperm
- stvx_u $out6,$x00,$out
- stvx_u $out7,$x10,$out
- addi $out,$out,0x20
- b Lcbc_dec8x_done
-
-.align 5
-Lcbc_dec8x_one:
- vncipherlast $out7,$out7,$ivec
- vmr $ivec,$in7
-
- le?vperm $out7,$out7,$out7,$inpperm
- stvx_u $out7,0,$out
- addi $out,$out,0x10
-
-Lcbc_dec8x_done:
- le?vperm $ivec,$ivec,$ivec,$inpperm
- stvx_u $ivec,0,$ivp # write [unaligned] iv
-
- li r10,`$FRAME+15`
- li r11,`$FRAME+31`
- stvx $inpperm,r10,$sp # wipe copies of round keys
- addi r10,r10,32
- stvx $inpperm,r11,$sp
- addi r11,r11,32
- stvx $inpperm,r10,$sp
- addi r10,r10,32
- stvx $inpperm,r11,$sp
- addi r11,r11,32
- stvx $inpperm,r10,$sp
- addi r10,r10,32
- stvx $inpperm,r11,$sp
- addi r11,r11,32
- stvx $inpperm,r10,$sp
- addi r10,r10,32
- stvx $inpperm,r11,$sp
- addi r11,r11,32
-
- mtspr 256,$vrsave
- lvx v20,r10,$sp # ABI says so
- addi r10,r10,32
- lvx v21,r11,$sp
- addi r11,r11,32
- lvx v22,r10,$sp
- addi r10,r10,32
- lvx v23,r11,$sp
- addi r11,r11,32
- lvx v24,r10,$sp
- addi r10,r10,32
- lvx v25,r11,$sp
- addi r11,r11,32
- lvx v26,r10,$sp
- addi r10,r10,32
- lvx v27,r11,$sp
- addi r11,r11,32
- lvx v28,r10,$sp
- addi r10,r10,32
- lvx v29,r11,$sp
- addi r11,r11,32
- lvx v30,r10,$sp
- lvx v31,r11,$sp
- $POP r26,`$FRAME+21*16+0*$SIZE_T`($sp)
- $POP r27,`$FRAME+21*16+1*$SIZE_T`($sp)
- $POP r28,`$FRAME+21*16+2*$SIZE_T`($sp)
- $POP r29,`$FRAME+21*16+3*$SIZE_T`($sp)
- $POP r30,`$FRAME+21*16+4*$SIZE_T`($sp)
- $POP r31,`$FRAME+21*16+5*$SIZE_T`($sp)
- addi $sp,$sp,`$FRAME+21*16+6*$SIZE_T`
- blr
- .long 0
- .byte 0,12,0x14,0,0x80,6,6,0
- .long 0
-.size .${prefix}_cbc_encrypt,.-.${prefix}_cbc_encrypt
-___
-}} }}}
-
-#########################################################################
-{{{ # CTR procedure[s] #
-
-####################### WARNING: Here be dragons! #######################
-#
-# This code is written as 'ctr32', based on a 32-bit counter used
-# upstream. The kernel does *not* use a 32-bit counter. The kernel uses
-# a 128-bit counter.
-#
-# This leads to subtle changes from the upstream code: the counter
-# is incremented with vaddu_q_m rather than vaddu_w_m. This occurs in
-# both the bulk (8 blocks at a time) path, and in the individual block
-# path. Be aware of this when doing updates.
-#
-# See:
-# 1d4aa0b4c181 ("crypto: vmx - Fixing AES-CTR counter bug")
-# 009b30ac7444 ("crypto: vmx - CTR: always increment IV as quadword")
-# https://github.com/openssl/openssl/pull/8942
-#
-#########################################################################
-my ($inp,$out,$len,$key,$ivp,$x10,$rounds,$idx)=map("r$_",(3..10));
-my ($rndkey0,$rndkey1,$inout,$tmp)= map("v$_",(0..3));
-my ($ivec,$inptail,$inpperm,$outhead,$outperm,$outmask,$keyperm,$one)=
- map("v$_",(4..11));
-my $dat=$tmp;
-
-$code.=<<___;
-.globl .${prefix}_ctr32_encrypt_blocks
- ${UCMP}i $len,1
- bltlr-
-
- lis r0,0xfff0
- mfspr $vrsave,256
- mtspr 256,r0
-
- li $idx,15
- vxor $rndkey0,$rndkey0,$rndkey0
- le?vspltisb $tmp,0x0f
-
- lvx $ivec,0,$ivp # load [unaligned] iv
- lvsl $inpperm,0,$ivp
- lvx $inptail,$idx,$ivp
- vspltisb $one,1
- le?vxor $inpperm,$inpperm,$tmp
- vperm $ivec,$ivec,$inptail,$inpperm
- vsldoi $one,$rndkey0,$one,1
-
- neg r11,$inp
- ?lvsl $keyperm,0,$key # prepare for unaligned key
- lwz $rounds,240($key)
-
- lvsr $inpperm,0,r11 # prepare for unaligned load
- lvx $inptail,0,$inp
- addi $inp,$inp,15 # 15 is not typo
- le?vxor $inpperm,$inpperm,$tmp
-
- srwi $rounds,$rounds,1
- li $idx,16
- subi $rounds,$rounds,1
-
- ${UCMP}i $len,8
- bge _aesp8_ctr32_encrypt8x
-
- ?lvsr $outperm,0,$out # prepare for unaligned store
- vspltisb $outmask,-1
- lvx $outhead,0,$out
- ?vperm $outmask,$rndkey0,$outmask,$outperm
- le?vxor $outperm,$outperm,$tmp
-
- lvx $rndkey0,0,$key
- mtctr $rounds
- lvx $rndkey1,$idx,$key
- addi $idx,$idx,16
- ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm
- vxor $inout,$ivec,$rndkey0
- lvx $rndkey0,$idx,$key
- addi $idx,$idx,16
- b Loop_ctr32_enc
-
-.align 5
-Loop_ctr32_enc:
- ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm
- vcipher $inout,$inout,$rndkey1
- lvx $rndkey1,$idx,$key
- addi $idx,$idx,16
- ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm
- vcipher $inout,$inout,$rndkey0
- lvx $rndkey0,$idx,$key
- addi $idx,$idx,16
- bdnz Loop_ctr32_enc
-
- vadduqm $ivec,$ivec,$one # Kernel change for 128-bit
- vmr $dat,$inptail
- lvx $inptail,0,$inp
- addi $inp,$inp,16
- subic. $len,$len,1 # blocks--
-
- ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm
- vcipher $inout,$inout,$rndkey1
- lvx $rndkey1,$idx,$key
- vperm $dat,$dat,$inptail,$inpperm
- li $idx,16
- ?vperm $rndkey1,$rndkey0,$rndkey1,$keyperm
- lvx $rndkey0,0,$key
- vxor $dat,$dat,$rndkey1 # last round key
- vcipherlast $inout,$inout,$dat
-
- lvx $rndkey1,$idx,$key
- addi $idx,$idx,16
- vperm $inout,$inout,$inout,$outperm
- vsel $dat,$outhead,$inout,$outmask
- mtctr $rounds
- ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm
- vmr $outhead,$inout
- vxor $inout,$ivec,$rndkey0
- lvx $rndkey0,$idx,$key
- addi $idx,$idx,16
- stvx $dat,0,$out
- addi $out,$out,16
- bne Loop_ctr32_enc
-
- addi $out,$out,-1
- lvx $inout,0,$out # redundant in aligned case
- vsel $inout,$outhead,$inout,$outmask
- stvx $inout,0,$out
-
- mtspr 256,$vrsave
- blr
- .long 0
- .byte 0,12,0x14,0,0,0,6,0
- .long 0
-___
-#########################################################################
-{{ # Optimized CTR procedure #
-my $key_="r11";
-my ($x00,$x10,$x20,$x30,$x40,$x50,$x60,$x70)=map("r$_",(0,8,26..31));
-my ($in0, $in1, $in2, $in3, $in4, $in5, $in6, $in7 )=map("v$_",(0..3,10,12..14));
-my ($out0,$out1,$out2,$out3,$out4,$out5,$out6,$out7)=map("v$_",(15..22));
-my $rndkey0="v23"; # v24-v25 rotating buffer for first found keys
- # v26-v31 last 6 round keys
-my ($tmp,$keyperm)=($in3,$in4); # aliases with "caller", redundant assignment
-my ($two,$three,$four)=($outhead,$outperm,$outmask);
-
-$code.=<<___;
-.align 5
-_aesp8_ctr32_encrypt8x:
- $STU $sp,-`($FRAME+21*16+6*$SIZE_T)`($sp)
- li r10,`$FRAME+8*16+15`
- li r11,`$FRAME+8*16+31`
- stvx v20,r10,$sp # ABI says so
- addi r10,r10,32
- stvx v21,r11,$sp
- addi r11,r11,32
- stvx v22,r10,$sp
- addi r10,r10,32
- stvx v23,r11,$sp
- addi r11,r11,32
- stvx v24,r10,$sp
- addi r10,r10,32
- stvx v25,r11,$sp
- addi r11,r11,32
- stvx v26,r10,$sp
- addi r10,r10,32
- stvx v27,r11,$sp
- addi r11,r11,32
- stvx v28,r10,$sp
- addi r10,r10,32
- stvx v29,r11,$sp
- addi r11,r11,32
- stvx v30,r10,$sp
- stvx v31,r11,$sp
- li r0,-1
- stw $vrsave,`$FRAME+21*16-4`($sp) # save vrsave
- li $x10,0x10
- $PUSH r26,`$FRAME+21*16+0*$SIZE_T`($sp)
- li $x20,0x20
- $PUSH r27,`$FRAME+21*16+1*$SIZE_T`($sp)
- li $x30,0x30
- $PUSH r28,`$FRAME+21*16+2*$SIZE_T`($sp)
- li $x40,0x40
- $PUSH r29,`$FRAME+21*16+3*$SIZE_T`($sp)
- li $x50,0x50
- $PUSH r30,`$FRAME+21*16+4*$SIZE_T`($sp)
- li $x60,0x60
- $PUSH r31,`$FRAME+21*16+5*$SIZE_T`($sp)
- li $x70,0x70
- mtspr 256,r0
-
- subi $rounds,$rounds,3 # -4 in total
-
- lvx $rndkey0,$x00,$key # load key schedule
- lvx v30,$x10,$key
- addi $key,$key,0x20
- lvx v31,$x00,$key
- ?vperm $rndkey0,$rndkey0,v30,$keyperm
- addi $key_,$sp,$FRAME+15
- mtctr $rounds
-
-Load_ctr32_enc_key:
- ?vperm v24,v30,v31,$keyperm
- lvx v30,$x10,$key
- addi $key,$key,0x20
- stvx v24,$x00,$key_ # off-load round[1]
- ?vperm v25,v31,v30,$keyperm
- lvx v31,$x00,$key
- stvx v25,$x10,$key_ # off-load round[2]
- addi $key_,$key_,0x20
- bdnz Load_ctr32_enc_key
-
- lvx v26,$x10,$key
- ?vperm v24,v30,v31,$keyperm
- lvx v27,$x20,$key
- stvx v24,$x00,$key_ # off-load round[3]
- ?vperm v25,v31,v26,$keyperm
- lvx v28,$x30,$key
- stvx v25,$x10,$key_ # off-load round[4]
- addi $key_,$sp,$FRAME+15 # rewind $key_
- ?vperm v26,v26,v27,$keyperm
- lvx v29,$x40,$key
- ?vperm v27,v27,v28,$keyperm
- lvx v30,$x50,$key
- ?vperm v28,v28,v29,$keyperm
- lvx v31,$x60,$key
- ?vperm v29,v29,v30,$keyperm
- lvx $out0,$x70,$key # borrow $out0
- ?vperm v30,v30,v31,$keyperm
- lvx v24,$x00,$key_ # pre-load round[1]
- ?vperm v31,v31,$out0,$keyperm
- lvx v25,$x10,$key_ # pre-load round[2]
-
- vadduqm $two,$one,$one
- subi $inp,$inp,15 # undo "caller"
- $SHL $len,$len,4
-
- vadduqm $out1,$ivec,$one # counter values ...
- vadduqm $out2,$ivec,$two # (do all ctr adds as 128-bit)
- vxor $out0,$ivec,$rndkey0 # ... xored with rndkey[0]
- le?li $idx,8
- vadduqm $out3,$out1,$two
- vxor $out1,$out1,$rndkey0
- le?lvsl $inpperm,0,$idx
- vadduqm $out4,$out2,$two
- vxor $out2,$out2,$rndkey0
- le?vspltisb $tmp,0x0f
- vadduqm $out5,$out3,$two
- vxor $out3,$out3,$rndkey0
- le?vxor $inpperm,$inpperm,$tmp # transform for lvx_u/stvx_u
- vadduqm $out6,$out4,$two
- vxor $out4,$out4,$rndkey0
- vadduqm $out7,$out5,$two
- vxor $out5,$out5,$rndkey0
- vadduqm $ivec,$out6,$two # next counter value
- vxor $out6,$out6,$rndkey0
- vxor $out7,$out7,$rndkey0
-
- mtctr $rounds
- b Loop_ctr32_enc8x
-.align 5
-Loop_ctr32_enc8x:
- vcipher $out0,$out0,v24
- vcipher $out1,$out1,v24
- vcipher $out2,$out2,v24
- vcipher $out3,$out3,v24
- vcipher $out4,$out4,v24
- vcipher $out5,$out5,v24
- vcipher $out6,$out6,v24
- vcipher $out7,$out7,v24
-Loop_ctr32_enc8x_middle:
- lvx v24,$x20,$key_ # round[3]
- addi $key_,$key_,0x20
-
- vcipher $out0,$out0,v25
- vcipher $out1,$out1,v25
- vcipher $out2,$out2,v25
- vcipher $out3,$out3,v25
- vcipher $out4,$out4,v25
- vcipher $out5,$out5,v25
- vcipher $out6,$out6,v25
- vcipher $out7,$out7,v25
- lvx v25,$x10,$key_ # round[4]
- bdnz Loop_ctr32_enc8x
-
- subic r11,$len,256 # $len-256, borrow $key_
- vcipher $out0,$out0,v24
- vcipher $out1,$out1,v24
- vcipher $out2,$out2,v24
- vcipher $out3,$out3,v24
- vcipher $out4,$out4,v24
- vcipher $out5,$out5,v24
- vcipher $out6,$out6,v24
- vcipher $out7,$out7,v24
-
- subfe r0,r0,r0 # borrow?-1:0
- vcipher $out0,$out0,v25
- vcipher $out1,$out1,v25
- vcipher $out2,$out2,v25
- vcipher $out3,$out3,v25
- vcipher $out4,$out4,v25
- vcipher $out5,$out5,v25
- vcipher $out6,$out6,v25
- vcipher $out7,$out7,v25
-
- and r0,r0,r11
- addi $key_,$sp,$FRAME+15 # rewind $key_
- vcipher $out0,$out0,v26
- vcipher $out1,$out1,v26
- vcipher $out2,$out2,v26
- vcipher $out3,$out3,v26
- vcipher $out4,$out4,v26
- vcipher $out5,$out5,v26
- vcipher $out6,$out6,v26
- vcipher $out7,$out7,v26
- lvx v24,$x00,$key_ # re-pre-load round[1]
-
- subic $len,$len,129 # $len-=129
- vcipher $out0,$out0,v27
- addi $len,$len,1 # $len-=128 really
- vcipher $out1,$out1,v27
- vcipher $out2,$out2,v27
- vcipher $out3,$out3,v27
- vcipher $out4,$out4,v27
- vcipher $out5,$out5,v27
- vcipher $out6,$out6,v27
- vcipher $out7,$out7,v27
- lvx v25,$x10,$key_ # re-pre-load round[2]
-
- vcipher $out0,$out0,v28
- lvx_u $in0,$x00,$inp # load input
- vcipher $out1,$out1,v28
- lvx_u $in1,$x10,$inp
- vcipher $out2,$out2,v28
- lvx_u $in2,$x20,$inp
- vcipher $out3,$out3,v28
- lvx_u $in3,$x30,$inp
- vcipher $out4,$out4,v28
- lvx_u $in4,$x40,$inp
- vcipher $out5,$out5,v28
- lvx_u $in5,$x50,$inp
- vcipher $out6,$out6,v28
- lvx_u $in6,$x60,$inp
- vcipher $out7,$out7,v28
- lvx_u $in7,$x70,$inp
- addi $inp,$inp,0x80
-
- vcipher $out0,$out0,v29
- le?vperm $in0,$in0,$in0,$inpperm
- vcipher $out1,$out1,v29
- le?vperm $in1,$in1,$in1,$inpperm
- vcipher $out2,$out2,v29
- le?vperm $in2,$in2,$in2,$inpperm
- vcipher $out3,$out3,v29
- le?vperm $in3,$in3,$in3,$inpperm
- vcipher $out4,$out4,v29
- le?vperm $in4,$in4,$in4,$inpperm
- vcipher $out5,$out5,v29
- le?vperm $in5,$in5,$in5,$inpperm
- vcipher $out6,$out6,v29
- le?vperm $in6,$in6,$in6,$inpperm
- vcipher $out7,$out7,v29
- le?vperm $in7,$in7,$in7,$inpperm
-
- add $inp,$inp,r0 # $inp is adjusted in such
- # way that at exit from the
- # loop inX-in7 are loaded
- # with last "words"
- subfe. r0,r0,r0 # borrow?-1:0
- vcipher $out0,$out0,v30
- vxor $in0,$in0,v31 # xor with last round key
- vcipher $out1,$out1,v30
- vxor $in1,$in1,v31
- vcipher $out2,$out2,v30
- vxor $in2,$in2,v31
- vcipher $out3,$out3,v30
- vxor $in3,$in3,v31
- vcipher $out4,$out4,v30
- vxor $in4,$in4,v31
- vcipher $out5,$out5,v30
- vxor $in5,$in5,v31
- vcipher $out6,$out6,v30
- vxor $in6,$in6,v31
- vcipher $out7,$out7,v30
- vxor $in7,$in7,v31
-
- bne Lctr32_enc8x_break # did $len-129 borrow?
-
- vcipherlast $in0,$out0,$in0
- vcipherlast $in1,$out1,$in1
- vadduqm $out1,$ivec,$one # counter values ...
- vcipherlast $in2,$out2,$in2
- vadduqm $out2,$ivec,$two
- vxor $out0,$ivec,$rndkey0 # ... xored with rndkey[0]
- vcipherlast $in3,$out3,$in3
- vadduqm $out3,$out1,$two
- vxor $out1,$out1,$rndkey0
- vcipherlast $in4,$out4,$in4
- vadduqm $out4,$out2,$two
- vxor $out2,$out2,$rndkey0
- vcipherlast $in5,$out5,$in5
- vadduqm $out5,$out3,$two
- vxor $out3,$out3,$rndkey0
- vcipherlast $in6,$out6,$in6
- vadduqm $out6,$out4,$two
- vxor $out4,$out4,$rndkey0
- vcipherlast $in7,$out7,$in7
- vadduqm $out7,$out5,$two
- vxor $out5,$out5,$rndkey0
- le?vperm $in0,$in0,$in0,$inpperm
- vadduqm $ivec,$out6,$two # next counter value
- vxor $out6,$out6,$rndkey0
- le?vperm $in1,$in1,$in1,$inpperm
- vxor $out7,$out7,$rndkey0
- mtctr $rounds
-
- vcipher $out0,$out0,v24
- stvx_u $in0,$x00,$out
- le?vperm $in2,$in2,$in2,$inpperm
- vcipher $out1,$out1,v24
- stvx_u $in1,$x10,$out
- le?vperm $in3,$in3,$in3,$inpperm
- vcipher $out2,$out2,v24
- stvx_u $in2,$x20,$out
- le?vperm $in4,$in4,$in4,$inpperm
- vcipher $out3,$out3,v24
- stvx_u $in3,$x30,$out
- le?vperm $in5,$in5,$in5,$inpperm
- vcipher $out4,$out4,v24
- stvx_u $in4,$x40,$out
- le?vperm $in6,$in6,$in6,$inpperm
- vcipher $out5,$out5,v24
- stvx_u $in5,$x50,$out
- le?vperm $in7,$in7,$in7,$inpperm
- vcipher $out6,$out6,v24
- stvx_u $in6,$x60,$out
- vcipher $out7,$out7,v24
- stvx_u $in7,$x70,$out
- addi $out,$out,0x80
-
- b Loop_ctr32_enc8x_middle
-
-.align 5
-Lctr32_enc8x_break:
- cmpwi $len,-0x60
- blt Lctr32_enc8x_one
- nop
- beq Lctr32_enc8x_two
- cmpwi $len,-0x40
- blt Lctr32_enc8x_three
- nop
- beq Lctr32_enc8x_four
- cmpwi $len,-0x20
- blt Lctr32_enc8x_five
- nop
- beq Lctr32_enc8x_six
- cmpwi $len,0x00
- blt Lctr32_enc8x_seven
-
-Lctr32_enc8x_eight:
- vcipherlast $out0,$out0,$in0
- vcipherlast $out1,$out1,$in1
- vcipherlast $out2,$out2,$in2
- vcipherlast $out3,$out3,$in3
- vcipherlast $out4,$out4,$in4
- vcipherlast $out5,$out5,$in5
- vcipherlast $out6,$out6,$in6
- vcipherlast $out7,$out7,$in7
-
- le?vperm $out0,$out0,$out0,$inpperm
- le?vperm $out1,$out1,$out1,$inpperm
- stvx_u $out0,$x00,$out
- le?vperm $out2,$out2,$out2,$inpperm
- stvx_u $out1,$x10,$out
- le?vperm $out3,$out3,$out3,$inpperm
- stvx_u $out2,$x20,$out
- le?vperm $out4,$out4,$out4,$inpperm
- stvx_u $out3,$x30,$out
- le?vperm $out5,$out5,$out5,$inpperm
- stvx_u $out4,$x40,$out
- le?vperm $out6,$out6,$out6,$inpperm
- stvx_u $out5,$x50,$out
- le?vperm $out7,$out7,$out7,$inpperm
- stvx_u $out6,$x60,$out
- stvx_u $out7,$x70,$out
- addi $out,$out,0x80
- b Lctr32_enc8x_done
-
-.align 5
-Lctr32_enc8x_seven:
- vcipherlast $out0,$out0,$in1
- vcipherlast $out1,$out1,$in2
- vcipherlast $out2,$out2,$in3
- vcipherlast $out3,$out3,$in4
- vcipherlast $out4,$out4,$in5
- vcipherlast $out5,$out5,$in6
- vcipherlast $out6,$out6,$in7
-
- le?vperm $out0,$out0,$out0,$inpperm
- le?vperm $out1,$out1,$out1,$inpperm
- stvx_u $out0,$x00,$out
- le?vperm $out2,$out2,$out2,$inpperm
- stvx_u $out1,$x10,$out
- le?vperm $out3,$out3,$out3,$inpperm
- stvx_u $out2,$x20,$out
- le?vperm $out4,$out4,$out4,$inpperm
- stvx_u $out3,$x30,$out
- le?vperm $out5,$out5,$out5,$inpperm
- stvx_u $out4,$x40,$out
- le?vperm $out6,$out6,$out6,$inpperm
- stvx_u $out5,$x50,$out
- stvx_u $out6,$x60,$out
- addi $out,$out,0x70
- b Lctr32_enc8x_done
-
-.align 5
-Lctr32_enc8x_six:
- vcipherlast $out0,$out0,$in2
- vcipherlast $out1,$out1,$in3
- vcipherlast $out2,$out2,$in4
- vcipherlast $out3,$out3,$in5
- vcipherlast $out4,$out4,$in6
- vcipherlast $out5,$out5,$in7
-
- le?vperm $out0,$out0,$out0,$inpperm
- le?vperm $out1,$out1,$out1,$inpperm
- stvx_u $out0,$x00,$out
- le?vperm $out2,$out2,$out2,$inpperm
- stvx_u $out1,$x10,$out
- le?vperm $out3,$out3,$out3,$inpperm
- stvx_u $out2,$x20,$out
- le?vperm $out4,$out4,$out4,$inpperm
- stvx_u $out3,$x30,$out
- le?vperm $out5,$out5,$out5,$inpperm
- stvx_u $out4,$x40,$out
- stvx_u $out5,$x50,$out
- addi $out,$out,0x60
- b Lctr32_enc8x_done
-
-.align 5
-Lctr32_enc8x_five:
- vcipherlast $out0,$out0,$in3
- vcipherlast $out1,$out1,$in4
- vcipherlast $out2,$out2,$in5
- vcipherlast $out3,$out3,$in6
- vcipherlast $out4,$out4,$in7
-
- le?vperm $out0,$out0,$out0,$inpperm
- le?vperm $out1,$out1,$out1,$inpperm
- stvx_u $out0,$x00,$out
- le?vperm $out2,$out2,$out2,$inpperm
- stvx_u $out1,$x10,$out
- le?vperm $out3,$out3,$out3,$inpperm
- stvx_u $out2,$x20,$out
- le?vperm $out4,$out4,$out4,$inpperm
- stvx_u $out3,$x30,$out
- stvx_u $out4,$x40,$out
- addi $out,$out,0x50
- b Lctr32_enc8x_done
-
-.align 5
-Lctr32_enc8x_four:
- vcipherlast $out0,$out0,$in4
- vcipherlast $out1,$out1,$in5
- vcipherlast $out2,$out2,$in6
- vcipherlast $out3,$out3,$in7
-
- le?vperm $out0,$out0,$out0,$inpperm
- le?vperm $out1,$out1,$out1,$inpperm
- stvx_u $out0,$x00,$out
- le?vperm $out2,$out2,$out2,$inpperm
- stvx_u $out1,$x10,$out
- le?vperm $out3,$out3,$out3,$inpperm
- stvx_u $out2,$x20,$out
- stvx_u $out3,$x30,$out
- addi $out,$out,0x40
- b Lctr32_enc8x_done
-
-.align 5
-Lctr32_enc8x_three:
- vcipherlast $out0,$out0,$in5
- vcipherlast $out1,$out1,$in6
- vcipherlast $out2,$out2,$in7
-
- le?vperm $out0,$out0,$out0,$inpperm
- le?vperm $out1,$out1,$out1,$inpperm
- stvx_u $out0,$x00,$out
- le?vperm $out2,$out2,$out2,$inpperm
- stvx_u $out1,$x10,$out
- stvx_u $out2,$x20,$out
- addi $out,$out,0x30
- b Lctr32_enc8x_done
-
-.align 5
-Lctr32_enc8x_two:
- vcipherlast $out0,$out0,$in6
- vcipherlast $out1,$out1,$in7
-
- le?vperm $out0,$out0,$out0,$inpperm
- le?vperm $out1,$out1,$out1,$inpperm
- stvx_u $out0,$x00,$out
- stvx_u $out1,$x10,$out
- addi $out,$out,0x20
- b Lctr32_enc8x_done
-
-.align 5
-Lctr32_enc8x_one:
- vcipherlast $out0,$out0,$in7
-
- le?vperm $out0,$out0,$out0,$inpperm
- stvx_u $out0,0,$out
- addi $out,$out,0x10
-
-Lctr32_enc8x_done:
- li r10,`$FRAME+15`
- li r11,`$FRAME+31`
- stvx $inpperm,r10,$sp # wipe copies of round keys
- addi r10,r10,32
- stvx $inpperm,r11,$sp
- addi r11,r11,32
- stvx $inpperm,r10,$sp
- addi r10,r10,32
- stvx $inpperm,r11,$sp
- addi r11,r11,32
- stvx $inpperm,r10,$sp
- addi r10,r10,32
- stvx $inpperm,r11,$sp
- addi r11,r11,32
- stvx $inpperm,r10,$sp
- addi r10,r10,32
- stvx $inpperm,r11,$sp
- addi r11,r11,32
-
- mtspr 256,$vrsave
- lvx v20,r10,$sp # ABI says so
- addi r10,r10,32
- lvx v21,r11,$sp
- addi r11,r11,32
- lvx v22,r10,$sp
- addi r10,r10,32
- lvx v23,r11,$sp
- addi r11,r11,32
- lvx v24,r10,$sp
- addi r10,r10,32
- lvx v25,r11,$sp
- addi r11,r11,32
- lvx v26,r10,$sp
- addi r10,r10,32
- lvx v27,r11,$sp
- addi r11,r11,32
- lvx v28,r10,$sp
- addi r10,r10,32
- lvx v29,r11,$sp
- addi r11,r11,32
- lvx v30,r10,$sp
- lvx v31,r11,$sp
- $POP r26,`$FRAME+21*16+0*$SIZE_T`($sp)
- $POP r27,`$FRAME+21*16+1*$SIZE_T`($sp)
- $POP r28,`$FRAME+21*16+2*$SIZE_T`($sp)
- $POP r29,`$FRAME+21*16+3*$SIZE_T`($sp)
- $POP r30,`$FRAME+21*16+4*$SIZE_T`($sp)
- $POP r31,`$FRAME+21*16+5*$SIZE_T`($sp)
- addi $sp,$sp,`$FRAME+21*16+6*$SIZE_T`
- blr
- .long 0
- .byte 0,12,0x14,0,0x80,6,6,0
- .long 0
-.size .${prefix}_ctr32_encrypt_blocks,.-.${prefix}_ctr32_encrypt_blocks
-___
-}} }}}
-
-#########################################################################
-{{{ # XTS procedures #
-# int aes_p8_xts_[en|de]crypt(const char *inp, char *out, size_t len, #
-# const AES_KEY *key1, const AES_KEY *key2, #
-# [const] unsigned char iv[16]); #
-# If $key2 is NULL, then a "tweak chaining" mode is engaged, in which #
-# input tweak value is assumed to be encrypted already, and last tweak #
-# value, one suitable for consecutive call on same chunk of data, is #
-# written back to original buffer. In addition, in "tweak chaining" #
-# mode only complete input blocks are processed. #
-
-my ($inp,$out,$len,$key1,$key2,$ivp,$rounds,$idx) = map("r$_",(3..10));
-my ($rndkey0,$rndkey1,$inout) = map("v$_",(0..2));
-my ($output,$inptail,$inpperm,$leperm,$keyperm) = map("v$_",(3..7));
-my ($tweak,$seven,$eighty7,$tmp,$tweak1) = map("v$_",(8..12));
-my $taillen = $key2;
-
- ($inp,$idx) = ($idx,$inp); # reassign
-
-$code.=<<___;
-.globl .${prefix}_xts_encrypt
- mr $inp,r3 # reassign
- li r3,-1
- ${UCMP}i $len,16
- bltlr-
-
- lis r0,0xfff0
- mfspr r12,256 # save vrsave
- li r11,0
- mtspr 256,r0
-
- vspltisb $seven,0x07 # 0x070707..07
- le?lvsl $leperm,r11,r11
- le?vspltisb $tmp,0x0f
- le?vxor $leperm,$leperm,$seven
-
- li $idx,15
- lvx $tweak,0,$ivp # load [unaligned] iv
- lvsl $inpperm,0,$ivp
- lvx $inptail,$idx,$ivp
- le?vxor $inpperm,$inpperm,$tmp
- vperm $tweak,$tweak,$inptail,$inpperm
-
- neg r11,$inp
- lvsr $inpperm,0,r11 # prepare for unaligned load
- lvx $inout,0,$inp
- addi $inp,$inp,15 # 15 is not typo
- le?vxor $inpperm,$inpperm,$tmp
-
- ${UCMP}i $key2,0 # key2==NULL?
- beq Lxts_enc_no_key2
-
- ?lvsl $keyperm,0,$key2 # prepare for unaligned key
- lwz $rounds,240($key2)
- srwi $rounds,$rounds,1
- subi $rounds,$rounds,1
- li $idx,16
-
- lvx $rndkey0,0,$key2
- lvx $rndkey1,$idx,$key2
- addi $idx,$idx,16
- ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm
- vxor $tweak,$tweak,$rndkey0
- lvx $rndkey0,$idx,$key2
- addi $idx,$idx,16
- mtctr $rounds
-
-Ltweak_xts_enc:
- ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm
- vcipher $tweak,$tweak,$rndkey1
- lvx $rndkey1,$idx,$key2
- addi $idx,$idx,16
- ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm
- vcipher $tweak,$tweak,$rndkey0
- lvx $rndkey0,$idx,$key2
- addi $idx,$idx,16
- bdnz Ltweak_xts_enc
-
- ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm
- vcipher $tweak,$tweak,$rndkey1
- lvx $rndkey1,$idx,$key2
- ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm
- vcipherlast $tweak,$tweak,$rndkey0
-
- li $ivp,0 # don't chain the tweak
- b Lxts_enc
-
-Lxts_enc_no_key2:
- li $idx,-16
- and $len,$len,$idx # in "tweak chaining"
- # mode only complete
- # blocks are processed
-Lxts_enc:
- lvx $inptail,0,$inp
- addi $inp,$inp,16
-
- ?lvsl $keyperm,0,$key1 # prepare for unaligned key
- lwz $rounds,240($key1)
- srwi $rounds,$rounds,1
- subi $rounds,$rounds,1
- li $idx,16
-
- vslb $eighty7,$seven,$seven # 0x808080..80
- vor $eighty7,$eighty7,$seven # 0x878787..87
- vspltisb $tmp,1 # 0x010101..01
- vsldoi $eighty7,$eighty7,$tmp,15 # 0x870101..01
-
- ${UCMP}i $len,96
- bge _aesp8_xts_encrypt6x
-
- andi. $taillen,$len,15
- subic r0,$len,32
- subi $taillen,$taillen,16
- subfe r0,r0,r0
- and r0,r0,$taillen
- add $inp,$inp,r0
-
- lvx $rndkey0,0,$key1
- lvx $rndkey1,$idx,$key1
- addi $idx,$idx,16
- vperm $inout,$inout,$inptail,$inpperm
- ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm
- vxor $inout,$inout,$tweak
- vxor $inout,$inout,$rndkey0
- lvx $rndkey0,$idx,$key1
- addi $idx,$idx,16
- mtctr $rounds
- b Loop_xts_enc
-
-.align 5
-Loop_xts_enc:
- ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm
- vcipher $inout,$inout,$rndkey1
- lvx $rndkey1,$idx,$key1
- addi $idx,$idx,16
- ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm
- vcipher $inout,$inout,$rndkey0
- lvx $rndkey0,$idx,$key1
- addi $idx,$idx,16
- bdnz Loop_xts_enc
-
- ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm
- vcipher $inout,$inout,$rndkey1
- lvx $rndkey1,$idx,$key1
- li $idx,16
- ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm
- vxor $rndkey0,$rndkey0,$tweak
- vcipherlast $output,$inout,$rndkey0
-
- le?vperm $tmp,$output,$output,$leperm
- be?nop
- le?stvx_u $tmp,0,$out
- be?stvx_u $output,0,$out
- addi $out,$out,16
-
- subic. $len,$len,16
- beq Lxts_enc_done
-
- vmr $inout,$inptail
- lvx $inptail,0,$inp
- addi $inp,$inp,16
- lvx $rndkey0,0,$key1
- lvx $rndkey1,$idx,$key1
- addi $idx,$idx,16
-
- subic r0,$len,32
- subfe r0,r0,r0
- and r0,r0,$taillen
- add $inp,$inp,r0
-
- vsrab $tmp,$tweak,$seven # next tweak value
- vaddubm $tweak,$tweak,$tweak
- vsldoi $tmp,$tmp,$tmp,15
- vand $tmp,$tmp,$eighty7
- vxor $tweak,$tweak,$tmp
-
- vperm $inout,$inout,$inptail,$inpperm
- ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm
- vxor $inout,$inout,$tweak
- vxor $output,$output,$rndkey0 # just in case $len<16
- vxor $inout,$inout,$rndkey0
- lvx $rndkey0,$idx,$key1
- addi $idx,$idx,16
-
- mtctr $rounds
- ${UCMP}i $len,16
- bge Loop_xts_enc
-
- vxor $output,$output,$tweak
- lvsr $inpperm,0,$len # $inpperm is no longer needed
- vxor $inptail,$inptail,$inptail # $inptail is no longer needed
- vspltisb $tmp,-1
- vperm $inptail,$inptail,$tmp,$inpperm
- vsel $inout,$inout,$output,$inptail
-
- subi r11,$out,17
- subi $out,$out,16
- mtctr $len
- li $len,16
-Loop_xts_enc_steal:
- lbzu r0,1(r11)
- stb r0,16(r11)
- bdnz Loop_xts_enc_steal
-
- mtctr $rounds
- b Loop_xts_enc # one more time...
-
-Lxts_enc_done:
- ${UCMP}i $ivp,0
- beq Lxts_enc_ret
-
- vsrab $tmp,$tweak,$seven # next tweak value
- vaddubm $tweak,$tweak,$tweak
- vsldoi $tmp,$tmp,$tmp,15
- vand $tmp,$tmp,$eighty7
- vxor $tweak,$tweak,$tmp
-
- le?vperm $tweak,$tweak,$tweak,$leperm
- stvx_u $tweak,0,$ivp
-
-Lxts_enc_ret:
- mtspr 256,r12 # restore vrsave
- li r3,0
- blr
- .long 0
- .byte 0,12,0x04,0,0x80,6,6,0
- .long 0
-.size .${prefix}_xts_encrypt,.-.${prefix}_xts_encrypt
-
-.globl .${prefix}_xts_decrypt
- mr $inp,r3 # reassign
- li r3,-1
- ${UCMP}i $len,16
- bltlr-
-
- lis r0,0xfff8
- mfspr r12,256 # save vrsave
- li r11,0
- mtspr 256,r0
-
- andi. r0,$len,15
- neg r0,r0
- andi. r0,r0,16
- sub $len,$len,r0
-
- vspltisb $seven,0x07 # 0x070707..07
- le?lvsl $leperm,r11,r11
- le?vspltisb $tmp,0x0f
- le?vxor $leperm,$leperm,$seven
-
- li $idx,15
- lvx $tweak,0,$ivp # load [unaligned] iv
- lvsl $inpperm,0,$ivp
- lvx $inptail,$idx,$ivp
- le?vxor $inpperm,$inpperm,$tmp
- vperm $tweak,$tweak,$inptail,$inpperm
-
- neg r11,$inp
- lvsr $inpperm,0,r11 # prepare for unaligned load
- lvx $inout,0,$inp
- addi $inp,$inp,15 # 15 is not typo
- le?vxor $inpperm,$inpperm,$tmp
-
- ${UCMP}i $key2,0 # key2==NULL?
- beq Lxts_dec_no_key2
-
- ?lvsl $keyperm,0,$key2 # prepare for unaligned key
- lwz $rounds,240($key2)
- srwi $rounds,$rounds,1
- subi $rounds,$rounds,1
- li $idx,16
-
- lvx $rndkey0,0,$key2
- lvx $rndkey1,$idx,$key2
- addi $idx,$idx,16
- ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm
- vxor $tweak,$tweak,$rndkey0
- lvx $rndkey0,$idx,$key2
- addi $idx,$idx,16
- mtctr $rounds
-
-Ltweak_xts_dec:
- ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm
- vcipher $tweak,$tweak,$rndkey1
- lvx $rndkey1,$idx,$key2
- addi $idx,$idx,16
- ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm
- vcipher $tweak,$tweak,$rndkey0
- lvx $rndkey0,$idx,$key2
- addi $idx,$idx,16
- bdnz Ltweak_xts_dec
-
- ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm
- vcipher $tweak,$tweak,$rndkey1
- lvx $rndkey1,$idx,$key2
- ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm
- vcipherlast $tweak,$tweak,$rndkey0
-
- li $ivp,0 # don't chain the tweak
- b Lxts_dec
-
-Lxts_dec_no_key2:
- neg $idx,$len
- andi. $idx,$idx,15
- add $len,$len,$idx # in "tweak chaining"
- # mode only complete
- # blocks are processed
-Lxts_dec:
- lvx $inptail,0,$inp
- addi $inp,$inp,16
-
- ?lvsl $keyperm,0,$key1 # prepare for unaligned key
- lwz $rounds,240($key1)
- srwi $rounds,$rounds,1
- subi $rounds,$rounds,1
- li $idx,16
-
- vslb $eighty7,$seven,$seven # 0x808080..80
- vor $eighty7,$eighty7,$seven # 0x878787..87
- vspltisb $tmp,1 # 0x010101..01
- vsldoi $eighty7,$eighty7,$tmp,15 # 0x870101..01
-
- ${UCMP}i $len,96
- bge _aesp8_xts_decrypt6x
-
- lvx $rndkey0,0,$key1
- lvx $rndkey1,$idx,$key1
- addi $idx,$idx,16
- vperm $inout,$inout,$inptail,$inpperm
- ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm
- vxor $inout,$inout,$tweak
- vxor $inout,$inout,$rndkey0
- lvx $rndkey0,$idx,$key1
- addi $idx,$idx,16
- mtctr $rounds
-
- ${UCMP}i $len,16
- blt Ltail_xts_dec
- be?b Loop_xts_dec
-
-.align 5
-Loop_xts_dec:
- ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm
- vncipher $inout,$inout,$rndkey1
- lvx $rndkey1,$idx,$key1
- addi $idx,$idx,16
- ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm
- vncipher $inout,$inout,$rndkey0
- lvx $rndkey0,$idx,$key1
- addi $idx,$idx,16
- bdnz Loop_xts_dec
-
- ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm
- vncipher $inout,$inout,$rndkey1
- lvx $rndkey1,$idx,$key1
- li $idx,16
- ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm
- vxor $rndkey0,$rndkey0,$tweak
- vncipherlast $output,$inout,$rndkey0
-
- le?vperm $tmp,$output,$output,$leperm
- be?nop
- le?stvx_u $tmp,0,$out
- be?stvx_u $output,0,$out
- addi $out,$out,16
-
- subic. $len,$len,16
- beq Lxts_dec_done
-
- vmr $inout,$inptail
- lvx $inptail,0,$inp
- addi $inp,$inp,16
- lvx $rndkey0,0,$key1
- lvx $rndkey1,$idx,$key1
- addi $idx,$idx,16
-
- vsrab $tmp,$tweak,$seven # next tweak value
- vaddubm $tweak,$tweak,$tweak
- vsldoi $tmp,$tmp,$tmp,15
- vand $tmp,$tmp,$eighty7
- vxor $tweak,$tweak,$tmp
-
- vperm $inout,$inout,$inptail,$inpperm
- ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm
- vxor $inout,$inout,$tweak
- vxor $inout,$inout,$rndkey0
- lvx $rndkey0,$idx,$key1
- addi $idx,$idx,16
-
- mtctr $rounds
- ${UCMP}i $len,16
- bge Loop_xts_dec
-
-Ltail_xts_dec:
- vsrab $tmp,$tweak,$seven # next tweak value
- vaddubm $tweak1,$tweak,$tweak
- vsldoi $tmp,$tmp,$tmp,15
- vand $tmp,$tmp,$eighty7
- vxor $tweak1,$tweak1,$tmp
-
- subi $inp,$inp,16
- add $inp,$inp,$len
-
- vxor $inout,$inout,$tweak # :-(
- vxor $inout,$inout,$tweak1 # :-)
-
-Loop_xts_dec_short:
- ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm
- vncipher $inout,$inout,$rndkey1
- lvx $rndkey1,$idx,$key1
- addi $idx,$idx,16
- ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm
- vncipher $inout,$inout,$rndkey0
- lvx $rndkey0,$idx,$key1
- addi $idx,$idx,16
- bdnz Loop_xts_dec_short
-
- ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm
- vncipher $inout,$inout,$rndkey1
- lvx $rndkey1,$idx,$key1
- li $idx,16
- ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm
- vxor $rndkey0,$rndkey0,$tweak1
- vncipherlast $output,$inout,$rndkey0
-
- le?vperm $tmp,$output,$output,$leperm
- be?nop
- le?stvx_u $tmp,0,$out
- be?stvx_u $output,0,$out
-
- vmr $inout,$inptail
- lvx $inptail,0,$inp
- #addi $inp,$inp,16
- lvx $rndkey0,0,$key1
- lvx $rndkey1,$idx,$key1
- addi $idx,$idx,16
- vperm $inout,$inout,$inptail,$inpperm
- ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm
-
- lvsr $inpperm,0,$len # $inpperm is no longer needed
- vxor $inptail,$inptail,$inptail # $inptail is no longer needed
- vspltisb $tmp,-1
- vperm $inptail,$inptail,$tmp,$inpperm
- vsel $inout,$inout,$output,$inptail
-
- vxor $rndkey0,$rndkey0,$tweak
- vxor $inout,$inout,$rndkey0
- lvx $rndkey0,$idx,$key1
- addi $idx,$idx,16
-
- subi r11,$out,1
- mtctr $len
- li $len,16
-Loop_xts_dec_steal:
- lbzu r0,1(r11)
- stb r0,16(r11)
- bdnz Loop_xts_dec_steal
-
- mtctr $rounds
- b Loop_xts_dec # one more time...
-
-Lxts_dec_done:
- ${UCMP}i $ivp,0
- beq Lxts_dec_ret
-
- vsrab $tmp,$tweak,$seven # next tweak value
- vaddubm $tweak,$tweak,$tweak
- vsldoi $tmp,$tmp,$tmp,15
- vand $tmp,$tmp,$eighty7
- vxor $tweak,$tweak,$tmp
-
- le?vperm $tweak,$tweak,$tweak,$leperm
- stvx_u $tweak,0,$ivp
-
-Lxts_dec_ret:
- mtspr 256,r12 # restore vrsave
- li r3,0
- blr
- .long 0
- .byte 0,12,0x04,0,0x80,6,6,0
- .long 0
-.size .${prefix}_xts_decrypt,.-.${prefix}_xts_decrypt
-___
-#########################################################################
-{{ # Optimized XTS procedures #
-my $key_=$key2;
-my ($x00,$x10,$x20,$x30,$x40,$x50,$x60,$x70)=map("r$_",(0,3,26..31));
- $x00=0 if ($flavour =~ /osx/);
-my ($in0, $in1, $in2, $in3, $in4, $in5 )=map("v$_",(0..5));
-my ($out0, $out1, $out2, $out3, $out4, $out5)=map("v$_",(7,12..16));
-my ($twk0, $twk1, $twk2, $twk3, $twk4, $twk5)=map("v$_",(17..22));
-my $rndkey0="v23"; # v24-v25 rotating buffer for first found keys
- # v26-v31 last 6 round keys
-my ($keyperm)=($out0); # aliases with "caller", redundant assignment
-my $taillen=$x70;
-
-$code.=<<___;
-.align 5
-_aesp8_xts_encrypt6x:
- $STU $sp,-`($FRAME+21*16+6*$SIZE_T)`($sp)
- mflr r11
- li r7,`$FRAME+8*16+15`
- li r3,`$FRAME+8*16+31`
- $PUSH r11,`$FRAME+21*16+6*$SIZE_T+$LRSAVE`($sp)
- stvx v20,r7,$sp # ABI says so
- addi r7,r7,32
- stvx v21,r3,$sp
- addi r3,r3,32
- stvx v22,r7,$sp
- addi r7,r7,32
- stvx v23,r3,$sp
- addi r3,r3,32
- stvx v24,r7,$sp
- addi r7,r7,32
- stvx v25,r3,$sp
- addi r3,r3,32
- stvx v26,r7,$sp
- addi r7,r7,32
- stvx v27,r3,$sp
- addi r3,r3,32
- stvx v28,r7,$sp
- addi r7,r7,32
- stvx v29,r3,$sp
- addi r3,r3,32
- stvx v30,r7,$sp
- stvx v31,r3,$sp
- li r0,-1
- stw $vrsave,`$FRAME+21*16-4`($sp) # save vrsave
- li $x10,0x10
- $PUSH r26,`$FRAME+21*16+0*$SIZE_T`($sp)
- li $x20,0x20
- $PUSH r27,`$FRAME+21*16+1*$SIZE_T`($sp)
- li $x30,0x30
- $PUSH r28,`$FRAME+21*16+2*$SIZE_T`($sp)
- li $x40,0x40
- $PUSH r29,`$FRAME+21*16+3*$SIZE_T`($sp)
- li $x50,0x50
- $PUSH r30,`$FRAME+21*16+4*$SIZE_T`($sp)
- li $x60,0x60
- $PUSH r31,`$FRAME+21*16+5*$SIZE_T`($sp)
- li $x70,0x70
- mtspr 256,r0
-
- subi $rounds,$rounds,3 # -4 in total
-
- lvx $rndkey0,$x00,$key1 # load key schedule
- lvx v30,$x10,$key1
- addi $key1,$key1,0x20
- lvx v31,$x00,$key1
- ?vperm $rndkey0,$rndkey0,v30,$keyperm
- addi $key_,$sp,$FRAME+15
- mtctr $rounds
-
-Load_xts_enc_key:
- ?vperm v24,v30,v31,$keyperm
- lvx v30,$x10,$key1
- addi $key1,$key1,0x20
- stvx v24,$x00,$key_ # off-load round[1]
- ?vperm v25,v31,v30,$keyperm
- lvx v31,$x00,$key1
- stvx v25,$x10,$key_ # off-load round[2]
- addi $key_,$key_,0x20
- bdnz Load_xts_enc_key
-
- lvx v26,$x10,$key1
- ?vperm v24,v30,v31,$keyperm
- lvx v27,$x20,$key1
- stvx v24,$x00,$key_ # off-load round[3]
- ?vperm v25,v31,v26,$keyperm
- lvx v28,$x30,$key1
- stvx v25,$x10,$key_ # off-load round[4]
- addi $key_,$sp,$FRAME+15 # rewind $key_
- ?vperm v26,v26,v27,$keyperm
- lvx v29,$x40,$key1
- ?vperm v27,v27,v28,$keyperm
- lvx v30,$x50,$key1
- ?vperm v28,v28,v29,$keyperm
- lvx v31,$x60,$key1
- ?vperm v29,v29,v30,$keyperm
- lvx $twk5,$x70,$key1 # borrow $twk5
- ?vperm v30,v30,v31,$keyperm
- lvx v24,$x00,$key_ # pre-load round[1]
- ?vperm v31,v31,$twk5,$keyperm
- lvx v25,$x10,$key_ # pre-load round[2]
-
- vperm $in0,$inout,$inptail,$inpperm
- subi $inp,$inp,31 # undo "caller"
- vxor $twk0,$tweak,$rndkey0
- vsrab $tmp,$tweak,$seven # next tweak value
- vaddubm $tweak,$tweak,$tweak
- vsldoi $tmp,$tmp,$tmp,15
- vand $tmp,$tmp,$eighty7
- vxor $out0,$in0,$twk0
- vxor $tweak,$tweak,$tmp
-
- lvx_u $in1,$x10,$inp
- vxor $twk1,$tweak,$rndkey0
- vsrab $tmp,$tweak,$seven # next tweak value
- vaddubm $tweak,$tweak,$tweak
- vsldoi $tmp,$tmp,$tmp,15
- le?vperm $in1,$in1,$in1,$leperm
- vand $tmp,$tmp,$eighty7
- vxor $out1,$in1,$twk1
- vxor $tweak,$tweak,$tmp
-
- lvx_u $in2,$x20,$inp
- andi. $taillen,$len,15
- vxor $twk2,$tweak,$rndkey0
- vsrab $tmp,$tweak,$seven # next tweak value
- vaddubm $tweak,$tweak,$tweak
- vsldoi $tmp,$tmp,$tmp,15
- le?vperm $in2,$in2,$in2,$leperm
- vand $tmp,$tmp,$eighty7
- vxor $out2,$in2,$twk2
- vxor $tweak,$tweak,$tmp
-
- lvx_u $in3,$x30,$inp
- sub $len,$len,$taillen
- vxor $twk3,$tweak,$rndkey0
- vsrab $tmp,$tweak,$seven # next tweak value
- vaddubm $tweak,$tweak,$tweak
- vsldoi $tmp,$tmp,$tmp,15
- le?vperm $in3,$in3,$in3,$leperm
- vand $tmp,$tmp,$eighty7
- vxor $out3,$in3,$twk3
- vxor $tweak,$tweak,$tmp
-
- lvx_u $in4,$x40,$inp
- subi $len,$len,0x60
- vxor $twk4,$tweak,$rndkey0
- vsrab $tmp,$tweak,$seven # next tweak value
- vaddubm $tweak,$tweak,$tweak
- vsldoi $tmp,$tmp,$tmp,15
- le?vperm $in4,$in4,$in4,$leperm
- vand $tmp,$tmp,$eighty7
- vxor $out4,$in4,$twk4
- vxor $tweak,$tweak,$tmp
-
- lvx_u $in5,$x50,$inp
- addi $inp,$inp,0x60
- vxor $twk5,$tweak,$rndkey0
- vsrab $tmp,$tweak,$seven # next tweak value
- vaddubm $tweak,$tweak,$tweak
- vsldoi $tmp,$tmp,$tmp,15
- le?vperm $in5,$in5,$in5,$leperm
- vand $tmp,$tmp,$eighty7
- vxor $out5,$in5,$twk5
- vxor $tweak,$tweak,$tmp
-
- vxor v31,v31,$rndkey0
- mtctr $rounds
- b Loop_xts_enc6x
-
-.align 5
-Loop_xts_enc6x:
- vcipher $out0,$out0,v24
- vcipher $out1,$out1,v24
- vcipher $out2,$out2,v24
- vcipher $out3,$out3,v24
- vcipher $out4,$out4,v24
- vcipher $out5,$out5,v24
- lvx v24,$x20,$key_ # round[3]
- addi $key_,$key_,0x20
-
- vcipher $out0,$out0,v25
- vcipher $out1,$out1,v25
- vcipher $out2,$out2,v25
- vcipher $out3,$out3,v25
- vcipher $out4,$out4,v25
- vcipher $out5,$out5,v25
- lvx v25,$x10,$key_ # round[4]
- bdnz Loop_xts_enc6x
-
- subic $len,$len,96 # $len-=96
- vxor $in0,$twk0,v31 # xor with last round key
- vcipher $out0,$out0,v24
- vcipher $out1,$out1,v24
- vsrab $tmp,$tweak,$seven # next tweak value
- vxor $twk0,$tweak,$rndkey0
- vaddubm $tweak,$tweak,$tweak
- vcipher $out2,$out2,v24
- vcipher $out3,$out3,v24
- vsldoi $tmp,$tmp,$tmp,15
- vcipher $out4,$out4,v24
- vcipher $out5,$out5,v24
-
- subfe. r0,r0,r0 # borrow?-1:0
- vand $tmp,$tmp,$eighty7
- vcipher $out0,$out0,v25
- vcipher $out1,$out1,v25
- vxor $tweak,$tweak,$tmp
- vcipher $out2,$out2,v25
- vcipher $out3,$out3,v25
- vxor $in1,$twk1,v31
- vsrab $tmp,$tweak,$seven # next tweak value
- vxor $twk1,$tweak,$rndkey0
- vcipher $out4,$out4,v25
- vcipher $out5,$out5,v25
-
- and r0,r0,$len
- vaddubm $tweak,$tweak,$tweak
- vsldoi $tmp,$tmp,$tmp,15
- vcipher $out0,$out0,v26
- vcipher $out1,$out1,v26
- vand $tmp,$tmp,$eighty7
- vcipher $out2,$out2,v26
- vcipher $out3,$out3,v26
- vxor $tweak,$tweak,$tmp
- vcipher $out4,$out4,v26
- vcipher $out5,$out5,v26
-
- add $inp,$inp,r0 # $inp is adjusted in such
- # way that at exit from the
- # loop inX-in5 are loaded
- # with last "words"
- vxor $in2,$twk2,v31
- vsrab $tmp,$tweak,$seven # next tweak value
- vxor $twk2,$tweak,$rndkey0
- vaddubm $tweak,$tweak,$tweak
- vcipher $out0,$out0,v27
- vcipher $out1,$out1,v27
- vsldoi $tmp,$tmp,$tmp,15
- vcipher $out2,$out2,v27
- vcipher $out3,$out3,v27
- vand $tmp,$tmp,$eighty7
- vcipher $out4,$out4,v27
- vcipher $out5,$out5,v27
-
- addi $key_,$sp,$FRAME+15 # rewind $key_
- vxor $tweak,$tweak,$tmp
- vcipher $out0,$out0,v28
- vcipher $out1,$out1,v28
- vxor $in3,$twk3,v31
- vsrab $tmp,$tweak,$seven # next tweak value
- vxor $twk3,$tweak,$rndkey0
- vcipher $out2,$out2,v28
- vcipher $out3,$out3,v28
- vaddubm $tweak,$tweak,$tweak
- vsldoi $tmp,$tmp,$tmp,15
- vcipher $out4,$out4,v28
- vcipher $out5,$out5,v28
- lvx v24,$x00,$key_ # re-pre-load round[1]
- vand $tmp,$tmp,$eighty7
-
- vcipher $out0,$out0,v29
- vcipher $out1,$out1,v29
- vxor $tweak,$tweak,$tmp
- vcipher $out2,$out2,v29
- vcipher $out3,$out3,v29
- vxor $in4,$twk4,v31
- vsrab $tmp,$tweak,$seven # next tweak value
- vxor $twk4,$tweak,$rndkey0
- vcipher $out4,$out4,v29
- vcipher $out5,$out5,v29
- lvx v25,$x10,$key_ # re-pre-load round[2]
- vaddubm $tweak,$tweak,$tweak
- vsldoi $tmp,$tmp,$tmp,15
-
- vcipher $out0,$out0,v30
- vcipher $out1,$out1,v30
- vand $tmp,$tmp,$eighty7
- vcipher $out2,$out2,v30
- vcipher $out3,$out3,v30
- vxor $tweak,$tweak,$tmp
- vcipher $out4,$out4,v30
- vcipher $out5,$out5,v30
- vxor $in5,$twk5,v31
- vsrab $tmp,$tweak,$seven # next tweak value
- vxor $twk5,$tweak,$rndkey0
-
- vcipherlast $out0,$out0,$in0
- lvx_u $in0,$x00,$inp # load next input block
- vaddubm $tweak,$tweak,$tweak
- vsldoi $tmp,$tmp,$tmp,15
- vcipherlast $out1,$out1,$in1
- lvx_u $in1,$x10,$inp
- vcipherlast $out2,$out2,$in2
- le?vperm $in0,$in0,$in0,$leperm
- lvx_u $in2,$x20,$inp
- vand $tmp,$tmp,$eighty7
- vcipherlast $out3,$out3,$in3
- le?vperm $in1,$in1,$in1,$leperm
- lvx_u $in3,$x30,$inp
- vcipherlast $out4,$out4,$in4
- le?vperm $in2,$in2,$in2,$leperm
- lvx_u $in4,$x40,$inp
- vxor $tweak,$tweak,$tmp
- vcipherlast $tmp,$out5,$in5 # last block might be needed
- # in stealing mode
- le?vperm $in3,$in3,$in3,$leperm
- lvx_u $in5,$x50,$inp
- addi $inp,$inp,0x60
- le?vperm $in4,$in4,$in4,$leperm
- le?vperm $in5,$in5,$in5,$leperm
-
- le?vperm $out0,$out0,$out0,$leperm
- le?vperm $out1,$out1,$out1,$leperm
- stvx_u $out0,$x00,$out # store output
- vxor $out0,$in0,$twk0
- le?vperm $out2,$out2,$out2,$leperm
- stvx_u $out1,$x10,$out
- vxor $out1,$in1,$twk1
- le?vperm $out3,$out3,$out3,$leperm
- stvx_u $out2,$x20,$out
- vxor $out2,$in2,$twk2
- le?vperm $out4,$out4,$out4,$leperm
- stvx_u $out3,$x30,$out
- vxor $out3,$in3,$twk3
- le?vperm $out5,$tmp,$tmp,$leperm
- stvx_u $out4,$x40,$out
- vxor $out4,$in4,$twk4
- le?stvx_u $out5,$x50,$out
- be?stvx_u $tmp, $x50,$out
- vxor $out5,$in5,$twk5
- addi $out,$out,0x60
-
- mtctr $rounds
- beq Loop_xts_enc6x # did $len-=96 borrow?
-
- addic. $len,$len,0x60
- beq Lxts_enc6x_zero
- cmpwi $len,0x20
- blt Lxts_enc6x_one
- nop
- beq Lxts_enc6x_two
- cmpwi $len,0x40
- blt Lxts_enc6x_three
- nop
- beq Lxts_enc6x_four
-
-Lxts_enc6x_five:
- vxor $out0,$in1,$twk0
- vxor $out1,$in2,$twk1
- vxor $out2,$in3,$twk2
- vxor $out3,$in4,$twk3
- vxor $out4,$in5,$twk4
-
- bl _aesp8_xts_enc5x
-
- le?vperm $out0,$out0,$out0,$leperm
- vmr $twk0,$twk5 # unused tweak
- le?vperm $out1,$out1,$out1,$leperm
- stvx_u $out0,$x00,$out # store output
- le?vperm $out2,$out2,$out2,$leperm
- stvx_u $out1,$x10,$out
- le?vperm $out3,$out3,$out3,$leperm
- stvx_u $out2,$x20,$out
- vxor $tmp,$out4,$twk5 # last block prep for stealing
- le?vperm $out4,$out4,$out4,$leperm
- stvx_u $out3,$x30,$out
- stvx_u $out4,$x40,$out
- addi $out,$out,0x50
- bne Lxts_enc6x_steal
- b Lxts_enc6x_done
-
-.align 4
-Lxts_enc6x_four:
- vxor $out0,$in2,$twk0
- vxor $out1,$in3,$twk1
- vxor $out2,$in4,$twk2
- vxor $out3,$in5,$twk3
- vxor $out4,$out4,$out4
-
- bl _aesp8_xts_enc5x
-
- le?vperm $out0,$out0,$out0,$leperm
- vmr $twk0,$twk4 # unused tweak
- le?vperm $out1,$out1,$out1,$leperm
- stvx_u $out0,$x00,$out # store output
- le?vperm $out2,$out2,$out2,$leperm
- stvx_u $out1,$x10,$out
- vxor $tmp,$out3,$twk4 # last block prep for stealing
- le?vperm $out3,$out3,$out3,$leperm
- stvx_u $out2,$x20,$out
- stvx_u $out3,$x30,$out
- addi $out,$out,0x40
- bne Lxts_enc6x_steal
- b Lxts_enc6x_done
-
-.align 4
-Lxts_enc6x_three:
- vxor $out0,$in3,$twk0
- vxor $out1,$in4,$twk1
- vxor $out2,$in5,$twk2
- vxor $out3,$out3,$out3
- vxor $out4,$out4,$out4
-
- bl _aesp8_xts_enc5x
-
- le?vperm $out0,$out0,$out0,$leperm
- vmr $twk0,$twk3 # unused tweak
- le?vperm $out1,$out1,$out1,$leperm
- stvx_u $out0,$x00,$out # store output
- vxor $tmp,$out2,$twk3 # last block prep for stealing
- le?vperm $out2,$out2,$out2,$leperm
- stvx_u $out1,$x10,$out
- stvx_u $out2,$x20,$out
- addi $out,$out,0x30
- bne Lxts_enc6x_steal
- b Lxts_enc6x_done
-
-.align 4
-Lxts_enc6x_two:
- vxor $out0,$in4,$twk0
- vxor $out1,$in5,$twk1
- vxor $out2,$out2,$out2
- vxor $out3,$out3,$out3
- vxor $out4,$out4,$out4
-
- bl _aesp8_xts_enc5x
-
- le?vperm $out0,$out0,$out0,$leperm
- vmr $twk0,$twk2 # unused tweak
- vxor $tmp,$out1,$twk2 # last block prep for stealing
- le?vperm $out1,$out1,$out1,$leperm
- stvx_u $out0,$x00,$out # store output
- stvx_u $out1,$x10,$out
- addi $out,$out,0x20
- bne Lxts_enc6x_steal
- b Lxts_enc6x_done
-
-.align 4
-Lxts_enc6x_one:
- vxor $out0,$in5,$twk0
- nop
-Loop_xts_enc1x:
- vcipher $out0,$out0,v24
- lvx v24,$x20,$key_ # round[3]
- addi $key_,$key_,0x20
-
- vcipher $out0,$out0,v25
- lvx v25,$x10,$key_ # round[4]
- bdnz Loop_xts_enc1x
-
- add $inp,$inp,$taillen
- cmpwi $taillen,0
- vcipher $out0,$out0,v24
-
- subi $inp,$inp,16
- vcipher $out0,$out0,v25
-
- lvsr $inpperm,0,$taillen
- vcipher $out0,$out0,v26
-
- lvx_u $in0,0,$inp
- vcipher $out0,$out0,v27
-
- addi $key_,$sp,$FRAME+15 # rewind $key_
- vcipher $out0,$out0,v28
- lvx v24,$x00,$key_ # re-pre-load round[1]
-
- vcipher $out0,$out0,v29
- lvx v25,$x10,$key_ # re-pre-load round[2]
- vxor $twk0,$twk0,v31
-
- le?vperm $in0,$in0,$in0,$leperm
- vcipher $out0,$out0,v30
-
- vperm $in0,$in0,$in0,$inpperm
- vcipherlast $out0,$out0,$twk0
-
- vmr $twk0,$twk1 # unused tweak
- vxor $tmp,$out0,$twk1 # last block prep for stealing
- le?vperm $out0,$out0,$out0,$leperm
- stvx_u $out0,$x00,$out # store output
- addi $out,$out,0x10
- bne Lxts_enc6x_steal
- b Lxts_enc6x_done
-
-.align 4
-Lxts_enc6x_zero:
- cmpwi $taillen,0
- beq Lxts_enc6x_done
-
- add $inp,$inp,$taillen
- subi $inp,$inp,16
- lvx_u $in0,0,$inp
- lvsr $inpperm,0,$taillen # $in5 is no more
- le?vperm $in0,$in0,$in0,$leperm
- vperm $in0,$in0,$in0,$inpperm
- vxor $tmp,$tmp,$twk0
-Lxts_enc6x_steal:
- vxor $in0,$in0,$twk0
- vxor $out0,$out0,$out0
- vspltisb $out1,-1
- vperm $out0,$out0,$out1,$inpperm
- vsel $out0,$in0,$tmp,$out0 # $tmp is last block, remember?
-
- subi r30,$out,17
- subi $out,$out,16
- mtctr $taillen
-Loop_xts_enc6x_steal:
- lbzu r0,1(r30)
- stb r0,16(r30)
- bdnz Loop_xts_enc6x_steal
-
- li $taillen,0
- mtctr $rounds
- b Loop_xts_enc1x # one more time...
-
-.align 4
-Lxts_enc6x_done:
- ${UCMP}i $ivp,0
- beq Lxts_enc6x_ret
-
- vxor $tweak,$twk0,$rndkey0
- le?vperm $tweak,$tweak,$tweak,$leperm
- stvx_u $tweak,0,$ivp
-
-Lxts_enc6x_ret:
- mtlr r11
- li r10,`$FRAME+15`
- li r11,`$FRAME+31`
- stvx $seven,r10,$sp # wipe copies of round keys
- addi r10,r10,32
- stvx $seven,r11,$sp
- addi r11,r11,32
- stvx $seven,r10,$sp
- addi r10,r10,32
- stvx $seven,r11,$sp
- addi r11,r11,32
- stvx $seven,r10,$sp
- addi r10,r10,32
- stvx $seven,r11,$sp
- addi r11,r11,32
- stvx $seven,r10,$sp
- addi r10,r10,32
- stvx $seven,r11,$sp
- addi r11,r11,32
-
- mtspr 256,$vrsave
- lvx v20,r10,$sp # ABI says so
- addi r10,r10,32
- lvx v21,r11,$sp
- addi r11,r11,32
- lvx v22,r10,$sp
- addi r10,r10,32
- lvx v23,r11,$sp
- addi r11,r11,32
- lvx v24,r10,$sp
- addi r10,r10,32
- lvx v25,r11,$sp
- addi r11,r11,32
- lvx v26,r10,$sp
- addi r10,r10,32
- lvx v27,r11,$sp
- addi r11,r11,32
- lvx v28,r10,$sp
- addi r10,r10,32
- lvx v29,r11,$sp
- addi r11,r11,32
- lvx v30,r10,$sp
- lvx v31,r11,$sp
- $POP r26,`$FRAME+21*16+0*$SIZE_T`($sp)
- $POP r27,`$FRAME+21*16+1*$SIZE_T`($sp)
- $POP r28,`$FRAME+21*16+2*$SIZE_T`($sp)
- $POP r29,`$FRAME+21*16+3*$SIZE_T`($sp)
- $POP r30,`$FRAME+21*16+4*$SIZE_T`($sp)
- $POP r31,`$FRAME+21*16+5*$SIZE_T`($sp)
- addi $sp,$sp,`$FRAME+21*16+6*$SIZE_T`
- blr
- .long 0
- .byte 0,12,0x04,1,0x80,6,6,0
- .long 0
-
-.align 5
-_aesp8_xts_enc5x:
- vcipher $out0,$out0,v24
- vcipher $out1,$out1,v24
- vcipher $out2,$out2,v24
- vcipher $out3,$out3,v24
- vcipher $out4,$out4,v24
- lvx v24,$x20,$key_ # round[3]
- addi $key_,$key_,0x20
-
- vcipher $out0,$out0,v25
- vcipher $out1,$out1,v25
- vcipher $out2,$out2,v25
- vcipher $out3,$out3,v25
- vcipher $out4,$out4,v25
- lvx v25,$x10,$key_ # round[4]
- bdnz _aesp8_xts_enc5x
-
- add $inp,$inp,$taillen
- cmpwi $taillen,0
- vcipher $out0,$out0,v24
- vcipher $out1,$out1,v24
- vcipher $out2,$out2,v24
- vcipher $out3,$out3,v24
- vcipher $out4,$out4,v24
-
- subi $inp,$inp,16
- vcipher $out0,$out0,v25
- vcipher $out1,$out1,v25
- vcipher $out2,$out2,v25
- vcipher $out3,$out3,v25
- vcipher $out4,$out4,v25
- vxor $twk0,$twk0,v31
-
- vcipher $out0,$out0,v26
- lvsr $inpperm,r0,$taillen # $in5 is no more
- vcipher $out1,$out1,v26
- vcipher $out2,$out2,v26
- vcipher $out3,$out3,v26
- vcipher $out4,$out4,v26
- vxor $in1,$twk1,v31
-
- vcipher $out0,$out0,v27
- lvx_u $in0,0,$inp
- vcipher $out1,$out1,v27
- vcipher $out2,$out2,v27
- vcipher $out3,$out3,v27
- vcipher $out4,$out4,v27
- vxor $in2,$twk2,v31
-
- addi $key_,$sp,$FRAME+15 # rewind $key_
- vcipher $out0,$out0,v28
- vcipher $out1,$out1,v28
- vcipher $out2,$out2,v28
- vcipher $out3,$out3,v28
- vcipher $out4,$out4,v28
- lvx v24,$x00,$key_ # re-pre-load round[1]
- vxor $in3,$twk3,v31
-
- vcipher $out0,$out0,v29
- le?vperm $in0,$in0,$in0,$leperm
- vcipher $out1,$out1,v29
- vcipher $out2,$out2,v29
- vcipher $out3,$out3,v29
- vcipher $out4,$out4,v29
- lvx v25,$x10,$key_ # re-pre-load round[2]
- vxor $in4,$twk4,v31
-
- vcipher $out0,$out0,v30
- vperm $in0,$in0,$in0,$inpperm
- vcipher $out1,$out1,v30
- vcipher $out2,$out2,v30
- vcipher $out3,$out3,v30
- vcipher $out4,$out4,v30
-
- vcipherlast $out0,$out0,$twk0
- vcipherlast $out1,$out1,$in1
- vcipherlast $out2,$out2,$in2
- vcipherlast $out3,$out3,$in3
- vcipherlast $out4,$out4,$in4
- blr
- .long 0
- .byte 0,12,0x14,0,0,0,0,0
-
-.align 5
-_aesp8_xts_decrypt6x:
- $STU $sp,-`($FRAME+21*16+6*$SIZE_T)`($sp)
- mflr r11
- li r7,`$FRAME+8*16+15`
- li r3,`$FRAME+8*16+31`
- $PUSH r11,`$FRAME+21*16+6*$SIZE_T+$LRSAVE`($sp)
- stvx v20,r7,$sp # ABI says so
- addi r7,r7,32
- stvx v21,r3,$sp
- addi r3,r3,32
- stvx v22,r7,$sp
- addi r7,r7,32
- stvx v23,r3,$sp
- addi r3,r3,32
- stvx v24,r7,$sp
- addi r7,r7,32
- stvx v25,r3,$sp
- addi r3,r3,32
- stvx v26,r7,$sp
- addi r7,r7,32
- stvx v27,r3,$sp
- addi r3,r3,32
- stvx v28,r7,$sp
- addi r7,r7,32
- stvx v29,r3,$sp
- addi r3,r3,32
- stvx v30,r7,$sp
- stvx v31,r3,$sp
- li r0,-1
- stw $vrsave,`$FRAME+21*16-4`($sp) # save vrsave
- li $x10,0x10
- $PUSH r26,`$FRAME+21*16+0*$SIZE_T`($sp)
- li $x20,0x20
- $PUSH r27,`$FRAME+21*16+1*$SIZE_T`($sp)
- li $x30,0x30
- $PUSH r28,`$FRAME+21*16+2*$SIZE_T`($sp)
- li $x40,0x40
- $PUSH r29,`$FRAME+21*16+3*$SIZE_T`($sp)
- li $x50,0x50
- $PUSH r30,`$FRAME+21*16+4*$SIZE_T`($sp)
- li $x60,0x60
- $PUSH r31,`$FRAME+21*16+5*$SIZE_T`($sp)
- li $x70,0x70
- mtspr 256,r0
-
- subi $rounds,$rounds,3 # -4 in total
-
- lvx $rndkey0,$x00,$key1 # load key schedule
- lvx v30,$x10,$key1
- addi $key1,$key1,0x20
- lvx v31,$x00,$key1
- ?vperm $rndkey0,$rndkey0,v30,$keyperm
- addi $key_,$sp,$FRAME+15
- mtctr $rounds
-
-Load_xts_dec_key:
- ?vperm v24,v30,v31,$keyperm
- lvx v30,$x10,$key1
- addi $key1,$key1,0x20
- stvx v24,$x00,$key_ # off-load round[1]
- ?vperm v25,v31,v30,$keyperm
- lvx v31,$x00,$key1
- stvx v25,$x10,$key_ # off-load round[2]
- addi $key_,$key_,0x20
- bdnz Load_xts_dec_key
-
- lvx v26,$x10,$key1
- ?vperm v24,v30,v31,$keyperm
- lvx v27,$x20,$key1
- stvx v24,$x00,$key_ # off-load round[3]
- ?vperm v25,v31,v26,$keyperm
- lvx v28,$x30,$key1
- stvx v25,$x10,$key_ # off-load round[4]
- addi $key_,$sp,$FRAME+15 # rewind $key_
- ?vperm v26,v26,v27,$keyperm
- lvx v29,$x40,$key1
- ?vperm v27,v27,v28,$keyperm
- lvx v30,$x50,$key1
- ?vperm v28,v28,v29,$keyperm
- lvx v31,$x60,$key1
- ?vperm v29,v29,v30,$keyperm
- lvx $twk5,$x70,$key1 # borrow $twk5
- ?vperm v30,v30,v31,$keyperm
- lvx v24,$x00,$key_ # pre-load round[1]
- ?vperm v31,v31,$twk5,$keyperm
- lvx v25,$x10,$key_ # pre-load round[2]
-
- vperm $in0,$inout,$inptail,$inpperm
- subi $inp,$inp,31 # undo "caller"
- vxor $twk0,$tweak,$rndkey0
- vsrab $tmp,$tweak,$seven # next tweak value
- vaddubm $tweak,$tweak,$tweak
- vsldoi $tmp,$tmp,$tmp,15
- vand $tmp,$tmp,$eighty7
- vxor $out0,$in0,$twk0
- vxor $tweak,$tweak,$tmp
-
- lvx_u $in1,$x10,$inp
- vxor $twk1,$tweak,$rndkey0
- vsrab $tmp,$tweak,$seven # next tweak value
- vaddubm $tweak,$tweak,$tweak
- vsldoi $tmp,$tmp,$tmp,15
- le?vperm $in1,$in1,$in1,$leperm
- vand $tmp,$tmp,$eighty7
- vxor $out1,$in1,$twk1
- vxor $tweak,$tweak,$tmp
-
- lvx_u $in2,$x20,$inp
- andi. $taillen,$len,15
- vxor $twk2,$tweak,$rndkey0
- vsrab $tmp,$tweak,$seven # next tweak value
- vaddubm $tweak,$tweak,$tweak
- vsldoi $tmp,$tmp,$tmp,15
- le?vperm $in2,$in2,$in2,$leperm
- vand $tmp,$tmp,$eighty7
- vxor $out2,$in2,$twk2
- vxor $tweak,$tweak,$tmp
-
- lvx_u $in3,$x30,$inp
- sub $len,$len,$taillen
- vxor $twk3,$tweak,$rndkey0
- vsrab $tmp,$tweak,$seven # next tweak value
- vaddubm $tweak,$tweak,$tweak
- vsldoi $tmp,$tmp,$tmp,15
- le?vperm $in3,$in3,$in3,$leperm
- vand $tmp,$tmp,$eighty7
- vxor $out3,$in3,$twk3
- vxor $tweak,$tweak,$tmp
-
- lvx_u $in4,$x40,$inp
- subi $len,$len,0x60
- vxor $twk4,$tweak,$rndkey0
- vsrab $tmp,$tweak,$seven # next tweak value
- vaddubm $tweak,$tweak,$tweak
- vsldoi $tmp,$tmp,$tmp,15
- le?vperm $in4,$in4,$in4,$leperm
- vand $tmp,$tmp,$eighty7
- vxor $out4,$in4,$twk4
- vxor $tweak,$tweak,$tmp
-
- lvx_u $in5,$x50,$inp
- addi $inp,$inp,0x60
- vxor $twk5,$tweak,$rndkey0
- vsrab $tmp,$tweak,$seven # next tweak value
- vaddubm $tweak,$tweak,$tweak
- vsldoi $tmp,$tmp,$tmp,15
- le?vperm $in5,$in5,$in5,$leperm
- vand $tmp,$tmp,$eighty7
- vxor $out5,$in5,$twk5
- vxor $tweak,$tweak,$tmp
-
- vxor v31,v31,$rndkey0
- mtctr $rounds
- b Loop_xts_dec6x
-
-.align 5
-Loop_xts_dec6x:
- vncipher $out0,$out0,v24
- vncipher $out1,$out1,v24
- vncipher $out2,$out2,v24
- vncipher $out3,$out3,v24
- vncipher $out4,$out4,v24
- vncipher $out5,$out5,v24
- lvx v24,$x20,$key_ # round[3]
- addi $key_,$key_,0x20
-
- vncipher $out0,$out0,v25
- vncipher $out1,$out1,v25
- vncipher $out2,$out2,v25
- vncipher $out3,$out3,v25
- vncipher $out4,$out4,v25
- vncipher $out5,$out5,v25
- lvx v25,$x10,$key_ # round[4]
- bdnz Loop_xts_dec6x
-
- subic $len,$len,96 # $len-=96
- vxor $in0,$twk0,v31 # xor with last round key
- vncipher $out0,$out0,v24
- vncipher $out1,$out1,v24
- vsrab $tmp,$tweak,$seven # next tweak value
- vxor $twk0,$tweak,$rndkey0
- vaddubm $tweak,$tweak,$tweak
- vncipher $out2,$out2,v24
- vncipher $out3,$out3,v24
- vsldoi $tmp,$tmp,$tmp,15
- vncipher $out4,$out4,v24
- vncipher $out5,$out5,v24
-
- subfe. r0,r0,r0 # borrow?-1:0
- vand $tmp,$tmp,$eighty7
- vncipher $out0,$out0,v25
- vncipher $out1,$out1,v25
- vxor $tweak,$tweak,$tmp
- vncipher $out2,$out2,v25
- vncipher $out3,$out3,v25
- vxor $in1,$twk1,v31
- vsrab $tmp,$tweak,$seven # next tweak value
- vxor $twk1,$tweak,$rndkey0
- vncipher $out4,$out4,v25
- vncipher $out5,$out5,v25
-
- and r0,r0,$len
- vaddubm $tweak,$tweak,$tweak
- vsldoi $tmp,$tmp,$tmp,15
- vncipher $out0,$out0,v26
- vncipher $out1,$out1,v26
- vand $tmp,$tmp,$eighty7
- vncipher $out2,$out2,v26
- vncipher $out3,$out3,v26
- vxor $tweak,$tweak,$tmp
- vncipher $out4,$out4,v26
- vncipher $out5,$out5,v26
-
- add $inp,$inp,r0 # $inp is adjusted in such
- # way that at exit from the
- # loop inX-in5 are loaded
- # with last "words"
- vxor $in2,$twk2,v31
- vsrab $tmp,$tweak,$seven # next tweak value
- vxor $twk2,$tweak,$rndkey0
- vaddubm $tweak,$tweak,$tweak
- vncipher $out0,$out0,v27
- vncipher $out1,$out1,v27
- vsldoi $tmp,$tmp,$tmp,15
- vncipher $out2,$out2,v27
- vncipher $out3,$out3,v27
- vand $tmp,$tmp,$eighty7
- vncipher $out4,$out4,v27
- vncipher $out5,$out5,v27
-
- addi $key_,$sp,$FRAME+15 # rewind $key_
- vxor $tweak,$tweak,$tmp
- vncipher $out0,$out0,v28
- vncipher $out1,$out1,v28
- vxor $in3,$twk3,v31
- vsrab $tmp,$tweak,$seven # next tweak value
- vxor $twk3,$tweak,$rndkey0
- vncipher $out2,$out2,v28
- vncipher $out3,$out3,v28
- vaddubm $tweak,$tweak,$tweak
- vsldoi $tmp,$tmp,$tmp,15
- vncipher $out4,$out4,v28
- vncipher $out5,$out5,v28
- lvx v24,$x00,$key_ # re-pre-load round[1]
- vand $tmp,$tmp,$eighty7
-
- vncipher $out0,$out0,v29
- vncipher $out1,$out1,v29
- vxor $tweak,$tweak,$tmp
- vncipher $out2,$out2,v29
- vncipher $out3,$out3,v29
- vxor $in4,$twk4,v31
- vsrab $tmp,$tweak,$seven # next tweak value
- vxor $twk4,$tweak,$rndkey0
- vncipher $out4,$out4,v29
- vncipher $out5,$out5,v29
- lvx v25,$x10,$key_ # re-pre-load round[2]
- vaddubm $tweak,$tweak,$tweak
- vsldoi $tmp,$tmp,$tmp,15
-
- vncipher $out0,$out0,v30
- vncipher $out1,$out1,v30
- vand $tmp,$tmp,$eighty7
- vncipher $out2,$out2,v30
- vncipher $out3,$out3,v30
- vxor $tweak,$tweak,$tmp
- vncipher $out4,$out4,v30
- vncipher $out5,$out5,v30
- vxor $in5,$twk5,v31
- vsrab $tmp,$tweak,$seven # next tweak value
- vxor $twk5,$tweak,$rndkey0
-
- vncipherlast $out0,$out0,$in0
- lvx_u $in0,$x00,$inp # load next input block
- vaddubm $tweak,$tweak,$tweak
- vsldoi $tmp,$tmp,$tmp,15
- vncipherlast $out1,$out1,$in1
- lvx_u $in1,$x10,$inp
- vncipherlast $out2,$out2,$in2
- le?vperm $in0,$in0,$in0,$leperm
- lvx_u $in2,$x20,$inp
- vand $tmp,$tmp,$eighty7
- vncipherlast $out3,$out3,$in3
- le?vperm $in1,$in1,$in1,$leperm
- lvx_u $in3,$x30,$inp
- vncipherlast $out4,$out4,$in4
- le?vperm $in2,$in2,$in2,$leperm
- lvx_u $in4,$x40,$inp
- vxor $tweak,$tweak,$tmp
- vncipherlast $out5,$out5,$in5
- le?vperm $in3,$in3,$in3,$leperm
- lvx_u $in5,$x50,$inp
- addi $inp,$inp,0x60
- le?vperm $in4,$in4,$in4,$leperm
- le?vperm $in5,$in5,$in5,$leperm
-
- le?vperm $out0,$out0,$out0,$leperm
- le?vperm $out1,$out1,$out1,$leperm
- stvx_u $out0,$x00,$out # store output
- vxor $out0,$in0,$twk0
- le?vperm $out2,$out2,$out2,$leperm
- stvx_u $out1,$x10,$out
- vxor $out1,$in1,$twk1
- le?vperm $out3,$out3,$out3,$leperm
- stvx_u $out2,$x20,$out
- vxor $out2,$in2,$twk2
- le?vperm $out4,$out4,$out4,$leperm
- stvx_u $out3,$x30,$out
- vxor $out3,$in3,$twk3
- le?vperm $out5,$out5,$out5,$leperm
- stvx_u $out4,$x40,$out
- vxor $out4,$in4,$twk4
- stvx_u $out5,$x50,$out
- vxor $out5,$in5,$twk5
- addi $out,$out,0x60
-
- mtctr $rounds
- beq Loop_xts_dec6x # did $len-=96 borrow?
-
- addic. $len,$len,0x60
- beq Lxts_dec6x_zero
- cmpwi $len,0x20
- blt Lxts_dec6x_one
- nop
- beq Lxts_dec6x_two
- cmpwi $len,0x40
- blt Lxts_dec6x_three
- nop
- beq Lxts_dec6x_four
-
-Lxts_dec6x_five:
- vxor $out0,$in1,$twk0
- vxor $out1,$in2,$twk1
- vxor $out2,$in3,$twk2
- vxor $out3,$in4,$twk3
- vxor $out4,$in5,$twk4
-
- bl _aesp8_xts_dec5x
-
- le?vperm $out0,$out0,$out0,$leperm
- vmr $twk0,$twk5 # unused tweak
- vxor $twk1,$tweak,$rndkey0
- le?vperm $out1,$out1,$out1,$leperm
- stvx_u $out0,$x00,$out # store output
- vxor $out0,$in0,$twk1
- le?vperm $out2,$out2,$out2,$leperm
- stvx_u $out1,$x10,$out
- le?vperm $out3,$out3,$out3,$leperm
- stvx_u $out2,$x20,$out
- le?vperm $out4,$out4,$out4,$leperm
- stvx_u $out3,$x30,$out
- stvx_u $out4,$x40,$out
- addi $out,$out,0x50
- bne Lxts_dec6x_steal
- b Lxts_dec6x_done
-
-.align 4
-Lxts_dec6x_four:
- vxor $out0,$in2,$twk0
- vxor $out1,$in3,$twk1
- vxor $out2,$in4,$twk2
- vxor $out3,$in5,$twk3
- vxor $out4,$out4,$out4
-
- bl _aesp8_xts_dec5x
-
- le?vperm $out0,$out0,$out0,$leperm
- vmr $twk0,$twk4 # unused tweak
- vmr $twk1,$twk5
- le?vperm $out1,$out1,$out1,$leperm
- stvx_u $out0,$x00,$out # store output
- vxor $out0,$in0,$twk5
- le?vperm $out2,$out2,$out2,$leperm
- stvx_u $out1,$x10,$out
- le?vperm $out3,$out3,$out3,$leperm
- stvx_u $out2,$x20,$out
- stvx_u $out3,$x30,$out
- addi $out,$out,0x40
- bne Lxts_dec6x_steal
- b Lxts_dec6x_done
-
-.align 4
-Lxts_dec6x_three:
- vxor $out0,$in3,$twk0
- vxor $out1,$in4,$twk1
- vxor $out2,$in5,$twk2
- vxor $out3,$out3,$out3
- vxor $out4,$out4,$out4
-
- bl _aesp8_xts_dec5x
-
- le?vperm $out0,$out0,$out0,$leperm
- vmr $twk0,$twk3 # unused tweak
- vmr $twk1,$twk4
- le?vperm $out1,$out1,$out1,$leperm
- stvx_u $out0,$x00,$out # store output
- vxor $out0,$in0,$twk4
- le?vperm $out2,$out2,$out2,$leperm
- stvx_u $out1,$x10,$out
- stvx_u $out2,$x20,$out
- addi $out,$out,0x30
- bne Lxts_dec6x_steal
- b Lxts_dec6x_done
-
-.align 4
-Lxts_dec6x_two:
- vxor $out0,$in4,$twk0
- vxor $out1,$in5,$twk1
- vxor $out2,$out2,$out2
- vxor $out3,$out3,$out3
- vxor $out4,$out4,$out4
-
- bl _aesp8_xts_dec5x
-
- le?vperm $out0,$out0,$out0,$leperm
- vmr $twk0,$twk2 # unused tweak
- vmr $twk1,$twk3
- le?vperm $out1,$out1,$out1,$leperm
- stvx_u $out0,$x00,$out # store output
- vxor $out0,$in0,$twk3
- stvx_u $out1,$x10,$out
- addi $out,$out,0x20
- bne Lxts_dec6x_steal
- b Lxts_dec6x_done
-
-.align 4
-Lxts_dec6x_one:
- vxor $out0,$in5,$twk0
- nop
-Loop_xts_dec1x:
- vncipher $out0,$out0,v24
- lvx v24,$x20,$key_ # round[3]
- addi $key_,$key_,0x20
-
- vncipher $out0,$out0,v25
- lvx v25,$x10,$key_ # round[4]
- bdnz Loop_xts_dec1x
-
- subi r0,$taillen,1
- vncipher $out0,$out0,v24
-
- andi. r0,r0,16
- cmpwi $taillen,0
- vncipher $out0,$out0,v25
-
- sub $inp,$inp,r0
- vncipher $out0,$out0,v26
-
- lvx_u $in0,0,$inp
- vncipher $out0,$out0,v27
-
- addi $key_,$sp,$FRAME+15 # rewind $key_
- vncipher $out0,$out0,v28
- lvx v24,$x00,$key_ # re-pre-load round[1]
-
- vncipher $out0,$out0,v29
- lvx v25,$x10,$key_ # re-pre-load round[2]
- vxor $twk0,$twk0,v31
-
- le?vperm $in0,$in0,$in0,$leperm
- vncipher $out0,$out0,v30
-
- mtctr $rounds
- vncipherlast $out0,$out0,$twk0
-
- vmr $twk0,$twk1 # unused tweak
- vmr $twk1,$twk2
- le?vperm $out0,$out0,$out0,$leperm
- stvx_u $out0,$x00,$out # store output
- addi $out,$out,0x10
- vxor $out0,$in0,$twk2
- bne Lxts_dec6x_steal
- b Lxts_dec6x_done
-
-.align 4
-Lxts_dec6x_zero:
- cmpwi $taillen,0
- beq Lxts_dec6x_done
-
- lvx_u $in0,0,$inp
- le?vperm $in0,$in0,$in0,$leperm
- vxor $out0,$in0,$twk1
-Lxts_dec6x_steal:
- vncipher $out0,$out0,v24
- lvx v24,$x20,$key_ # round[3]
- addi $key_,$key_,0x20
-
- vncipher $out0,$out0,v25
- lvx v25,$x10,$key_ # round[4]
- bdnz Lxts_dec6x_steal
-
- add $inp,$inp,$taillen
- vncipher $out0,$out0,v24
-
- cmpwi $taillen,0
- vncipher $out0,$out0,v25
-
- lvx_u $in0,0,$inp
- vncipher $out0,$out0,v26
-
- lvsr $inpperm,0,$taillen # $in5 is no more
- vncipher $out0,$out0,v27
-
- addi $key_,$sp,$FRAME+15 # rewind $key_
- vncipher $out0,$out0,v28
- lvx v24,$x00,$key_ # re-pre-load round[1]
-
- vncipher $out0,$out0,v29
- lvx v25,$x10,$key_ # re-pre-load round[2]
- vxor $twk1,$twk1,v31
-
- le?vperm $in0,$in0,$in0,$leperm
- vncipher $out0,$out0,v30
-
- vperm $in0,$in0,$in0,$inpperm
- vncipherlast $tmp,$out0,$twk1
-
- le?vperm $out0,$tmp,$tmp,$leperm
- le?stvx_u $out0,0,$out
- be?stvx_u $tmp,0,$out
-
- vxor $out0,$out0,$out0
- vspltisb $out1,-1
- vperm $out0,$out0,$out1,$inpperm
- vsel $out0,$in0,$tmp,$out0
- vxor $out0,$out0,$twk0
-
- subi r30,$out,1
- mtctr $taillen
-Loop_xts_dec6x_steal:
- lbzu r0,1(r30)
- stb r0,16(r30)
- bdnz Loop_xts_dec6x_steal
-
- li $taillen,0
- mtctr $rounds
- b Loop_xts_dec1x # one more time...
-
-.align 4
-Lxts_dec6x_done:
- ${UCMP}i $ivp,0
- beq Lxts_dec6x_ret
-
- vxor $tweak,$twk0,$rndkey0
- le?vperm $tweak,$tweak,$tweak,$leperm
- stvx_u $tweak,0,$ivp
-
-Lxts_dec6x_ret:
- mtlr r11
- li r10,`$FRAME+15`
- li r11,`$FRAME+31`
- stvx $seven,r10,$sp # wipe copies of round keys
- addi r10,r10,32
- stvx $seven,r11,$sp
- addi r11,r11,32
- stvx $seven,r10,$sp
- addi r10,r10,32
- stvx $seven,r11,$sp
- addi r11,r11,32
- stvx $seven,r10,$sp
- addi r10,r10,32
- stvx $seven,r11,$sp
- addi r11,r11,32
- stvx $seven,r10,$sp
- addi r10,r10,32
- stvx $seven,r11,$sp
- addi r11,r11,32
-
- mtspr 256,$vrsave
- lvx v20,r10,$sp # ABI says so
- addi r10,r10,32
- lvx v21,r11,$sp
- addi r11,r11,32
- lvx v22,r10,$sp
- addi r10,r10,32
- lvx v23,r11,$sp
- addi r11,r11,32
- lvx v24,r10,$sp
- addi r10,r10,32
- lvx v25,r11,$sp
- addi r11,r11,32
- lvx v26,r10,$sp
- addi r10,r10,32
- lvx v27,r11,$sp
- addi r11,r11,32
- lvx v28,r10,$sp
- addi r10,r10,32
- lvx v29,r11,$sp
- addi r11,r11,32
- lvx v30,r10,$sp
- lvx v31,r11,$sp
- $POP r26,`$FRAME+21*16+0*$SIZE_T`($sp)
- $POP r27,`$FRAME+21*16+1*$SIZE_T`($sp)
- $POP r28,`$FRAME+21*16+2*$SIZE_T`($sp)
- $POP r29,`$FRAME+21*16+3*$SIZE_T`($sp)
- $POP r30,`$FRAME+21*16+4*$SIZE_T`($sp)
- $POP r31,`$FRAME+21*16+5*$SIZE_T`($sp)
- addi $sp,$sp,`$FRAME+21*16+6*$SIZE_T`
- blr
- .long 0
- .byte 0,12,0x04,1,0x80,6,6,0
- .long 0
-
-.align 5
-_aesp8_xts_dec5x:
- vncipher $out0,$out0,v24
- vncipher $out1,$out1,v24
- vncipher $out2,$out2,v24
- vncipher $out3,$out3,v24
- vncipher $out4,$out4,v24
- lvx v24,$x20,$key_ # round[3]
- addi $key_,$key_,0x20
-
- vncipher $out0,$out0,v25
- vncipher $out1,$out1,v25
- vncipher $out2,$out2,v25
- vncipher $out3,$out3,v25
- vncipher $out4,$out4,v25
- lvx v25,$x10,$key_ # round[4]
- bdnz _aesp8_xts_dec5x
-
- subi r0,$taillen,1
- vncipher $out0,$out0,v24
- vncipher $out1,$out1,v24
- vncipher $out2,$out2,v24
- vncipher $out3,$out3,v24
- vncipher $out4,$out4,v24
-
- andi. r0,r0,16
- cmpwi $taillen,0
- vncipher $out0,$out0,v25
- vncipher $out1,$out1,v25
- vncipher $out2,$out2,v25
- vncipher $out3,$out3,v25
- vncipher $out4,$out4,v25
- vxor $twk0,$twk0,v31
-
- sub $inp,$inp,r0
- vncipher $out0,$out0,v26
- vncipher $out1,$out1,v26
- vncipher $out2,$out2,v26
- vncipher $out3,$out3,v26
- vncipher $out4,$out4,v26
- vxor $in1,$twk1,v31
-
- vncipher $out0,$out0,v27
- lvx_u $in0,0,$inp
- vncipher $out1,$out1,v27
- vncipher $out2,$out2,v27
- vncipher $out3,$out3,v27
- vncipher $out4,$out4,v27
- vxor $in2,$twk2,v31
-
- addi $key_,$sp,$FRAME+15 # rewind $key_
- vncipher $out0,$out0,v28
- vncipher $out1,$out1,v28
- vncipher $out2,$out2,v28
- vncipher $out3,$out3,v28
- vncipher $out4,$out4,v28
- lvx v24,$x00,$key_ # re-pre-load round[1]
- vxor $in3,$twk3,v31
-
- vncipher $out0,$out0,v29
- le?vperm $in0,$in0,$in0,$leperm
- vncipher $out1,$out1,v29
- vncipher $out2,$out2,v29
- vncipher $out3,$out3,v29
- vncipher $out4,$out4,v29
- lvx v25,$x10,$key_ # re-pre-load round[2]
- vxor $in4,$twk4,v31
-
- vncipher $out0,$out0,v30
- vncipher $out1,$out1,v30
- vncipher $out2,$out2,v30
- vncipher $out3,$out3,v30
- vncipher $out4,$out4,v30
-
- vncipherlast $out0,$out0,$twk0
- vncipherlast $out1,$out1,$in1
- vncipherlast $out2,$out2,$in2
- vncipherlast $out3,$out3,$in3
- vncipherlast $out4,$out4,$in4
- mtctr $rounds
- blr
- .long 0
- .byte 0,12,0x14,0,0,0,0,0
-___
-}} }}}
-
-my $consts=1;
-foreach(split("\n",$code)) {
- s/\`([^\`]*)\`/eval($1)/geo;
-
- # constants table endian-specific conversion
- if ($consts && m/\.(long|byte)\s+(.+)\s+(\?[a-z]*)$/o) {
- my $conv=$3;
- my @bytes=();
-
- # convert to endian-agnostic format
- if ($1 eq "long") {
- foreach (split(/,\s*/,$2)) {
- my $l = /^0/?oct:int;
- push @bytes,($l>>24)&0xff,($l>>16)&0xff,($l>>8)&0xff,$l&0xff;
- }
- } else {
- @bytes = map(/^0/?oct:int,split(/,\s*/,$2));
- }
-
- # little-endian conversion
- if ($flavour =~ /le$/o) {
- SWITCH: for($conv) {
- /\?inv/ && do { @bytes=map($_^0xf,@bytes); last; };
- /\?rev/ && do { @bytes=reverse(@bytes); last; };
- }
- }
-
- #emit
- print ".byte\t",join(',',map (sprintf("0x%02x",$_),@bytes)),"\n";
- next;
- }
- $consts=0 if (m/Lconsts:/o); # end of table
-
- # instructions prefixed with '?' are endian-specific and need
- # to be adjusted accordingly...
- if ($flavour =~ /le$/o) { # little-endian
- s/le\?//o or
- s/be\?/#be#/o or
- s/\?lvsr/lvsl/o or
- s/\?lvsl/lvsr/o or
- s/\?(vperm\s+v[0-9]+,\s*)(v[0-9]+,\s*)(v[0-9]+,\s*)(v[0-9]+)/$1$3$2$4/o or
- s/\?(vsldoi\s+v[0-9]+,\s*)(v[0-9]+,)\s*(v[0-9]+,\s*)([0-9]+)/$1$3$2 16-$4/o or
- s/\?(vspltw\s+v[0-9]+,\s*)(v[0-9]+,)\s*([0-9])/$1$2 3-$3/o;
- } else { # big-endian
- s/le\?/#le#/o or
- s/be\?//o or
- s/\?([a-z]+)/$1/o;
- }
-
- print $_,"\n";
-}
-
-close STDOUT;
projects / users / willy / xarray.git / commitdiff