241 lines
4.5 KiB
Raku
241 lines
4.5 KiB
Raku
#! /usr/bin/env perl
|
|
# Copyright 2009-2016 The OpenSSL Project Authors. All Rights Reserved.
|
|
#
|
|
# Licensed under the OpenSSL license (the "License"). You may not use
|
|
# this file except in compliance with the License. You can obtain a copy
|
|
# in the file LICENSE in the source distribution or at
|
|
# https://www.openssl.org/source/license.html
|
|
|
|
#
|
|
# ====================================================================
|
|
# Written by Andy Polyakov <appro@fy.chalmers.se> for the OpenSSL
|
|
# project. The module is, however, dual licensed under OpenSSL and
|
|
# CRYPTOGAMS licenses depending on where you obtain it. For further
|
|
# details see http://www.openssl.org/~appro/cryptogams/.
|
|
# ====================================================================
|
|
#
|
|
# February 2009
|
|
#
|
|
# Performance is 2x of gcc 3.4.6 on z10. Coding "secret" is to
|
|
# "cluster" Address Generation Interlocks, so that one pipeline stall
|
|
# resolves several dependencies.
|
|
|
|
# November 2010.
|
|
#
|
|
# Adapt for -m31 build. If kernel supports what's called "highgprs"
|
|
# feature on Linux [see /proc/cpuinfo], it's possible to use 64-bit
|
|
# instructions and achieve "64-bit" performance even in 31-bit legacy
|
|
# application context. The feature is not specific to any particular
|
|
# processor, as long as it's "z-CPU". Latter implies that the code
|
|
# remains z/Architecture specific. On z990 it was measured to perform
|
|
# 50% better than code generated by gcc 4.3.
|
|
|
|
$flavour = shift;
|
|
|
|
if ($flavour =~ /3[12]/) {
|
|
$SIZE_T=4;
|
|
$g="";
|
|
} else {
|
|
$SIZE_T=8;
|
|
$g="g";
|
|
}
|
|
|
|
while (($output=shift) && ($output!~/\w[\w\-]*\.\w+$/)) {}
|
|
open STDOUT,">$output";
|
|
|
|
$rp="%r14";
|
|
$sp="%r15";
|
|
$code=<<___;
|
|
.text
|
|
|
|
___
|
|
|
|
# void RC4(RC4_KEY *key,size_t len,const void *inp,void *out)
|
|
{
|
|
$acc="%r0";
|
|
$cnt="%r1";
|
|
$key="%r2";
|
|
$len="%r3";
|
|
$inp="%r4";
|
|
$out="%r5";
|
|
|
|
@XX=("%r6","%r7");
|
|
@TX=("%r8","%r9");
|
|
$YY="%r10";
|
|
$TY="%r11";
|
|
|
|
$code.=<<___;
|
|
.globl RC4
|
|
.type RC4,\@function
|
|
.align 64
|
|
RC4:
|
|
stm${g} %r6,%r11,6*$SIZE_T($sp)
|
|
___
|
|
$code.=<<___ if ($flavour =~ /3[12]/);
|
|
llgfr $len,$len
|
|
___
|
|
$code.=<<___;
|
|
llgc $XX[0],0($key)
|
|
llgc $YY,1($key)
|
|
la $XX[0],1($XX[0])
|
|
nill $XX[0],0xff
|
|
srlg $cnt,$len,3
|
|
ltgr $cnt,$cnt
|
|
llgc $TX[0],2($XX[0],$key)
|
|
jz .Lshort
|
|
j .Loop8
|
|
|
|
.align 64
|
|
.Loop8:
|
|
___
|
|
for ($i=0;$i<8;$i++) {
|
|
$code.=<<___;
|
|
la $YY,0($YY,$TX[0]) # $i
|
|
nill $YY,255
|
|
la $XX[1],1($XX[0])
|
|
nill $XX[1],255
|
|
___
|
|
$code.=<<___ if ($i==1);
|
|
llgc $acc,2($TY,$key)
|
|
___
|
|
$code.=<<___ if ($i>1);
|
|
sllg $acc,$acc,8
|
|
ic $acc,2($TY,$key)
|
|
___
|
|
$code.=<<___;
|
|
llgc $TY,2($YY,$key)
|
|
stc $TX[0],2($YY,$key)
|
|
llgc $TX[1],2($XX[1],$key)
|
|
stc $TY,2($XX[0],$key)
|
|
cr $XX[1],$YY
|
|
jne .Lcmov$i
|
|
la $TX[1],0($TX[0])
|
|
.Lcmov$i:
|
|
la $TY,0($TY,$TX[0])
|
|
nill $TY,255
|
|
___
|
|
push(@TX,shift(@TX)); push(@XX,shift(@XX)); # "rotate" registers
|
|
}
|
|
|
|
$code.=<<___;
|
|
lg $TX[1],0($inp)
|
|
sllg $acc,$acc,8
|
|
la $inp,8($inp)
|
|
ic $acc,2($TY,$key)
|
|
xgr $acc,$TX[1]
|
|
stg $acc,0($out)
|
|
la $out,8($out)
|
|
brctg $cnt,.Loop8
|
|
|
|
.Lshort:
|
|
lghi $acc,7
|
|
ngr $len,$acc
|
|
jz .Lexit
|
|
j .Loop1
|
|
|
|
.align 16
|
|
.Loop1:
|
|
la $YY,0($YY,$TX[0])
|
|
nill $YY,255
|
|
llgc $TY,2($YY,$key)
|
|
stc $TX[0],2($YY,$key)
|
|
stc $TY,2($XX[0],$key)
|
|
ar $TY,$TX[0]
|
|
ahi $XX[0],1
|
|
nill $TY,255
|
|
nill $XX[0],255
|
|
llgc $acc,0($inp)
|
|
la $inp,1($inp)
|
|
llgc $TY,2($TY,$key)
|
|
llgc $TX[0],2($XX[0],$key)
|
|
xr $acc,$TY
|
|
stc $acc,0($out)
|
|
la $out,1($out)
|
|
brct $len,.Loop1
|
|
|
|
.Lexit:
|
|
ahi $XX[0],-1
|
|
stc $XX[0],0($key)
|
|
stc $YY,1($key)
|
|
lm${g} %r6,%r11,6*$SIZE_T($sp)
|
|
br $rp
|
|
.size RC4,.-RC4
|
|
.string "RC4 for s390x, CRYPTOGAMS by <appro\@openssl.org>"
|
|
|
|
___
|
|
}
|
|
|
|
# void RC4_set_key(RC4_KEY *key,unsigned int len,const void *inp)
|
|
{
|
|
$cnt="%r0";
|
|
$idx="%r1";
|
|
$key="%r2";
|
|
$len="%r3";
|
|
$inp="%r4";
|
|
$acc="%r5";
|
|
$dat="%r6";
|
|
$ikey="%r7";
|
|
$iinp="%r8";
|
|
|
|
$code.=<<___;
|
|
.globl RC4_set_key
|
|
.type RC4_set_key,\@function
|
|
.align 64
|
|
RC4_set_key:
|
|
stm${g} %r6,%r8,6*$SIZE_T($sp)
|
|
lhi $cnt,256
|
|
la $idx,0(%r0)
|
|
sth $idx,0($key)
|
|
.align 4
|
|
.L1stloop:
|
|
stc $idx,2($idx,$key)
|
|
la $idx,1($idx)
|
|
brct $cnt,.L1stloop
|
|
|
|
lghi $ikey,-256
|
|
lr $cnt,$len
|
|
la $iinp,0(%r0)
|
|
la $idx,0(%r0)
|
|
.align 16
|
|
.L2ndloop:
|
|
llgc $acc,2+256($ikey,$key)
|
|
llgc $dat,0($iinp,$inp)
|
|
la $idx,0($idx,$acc)
|
|
la $ikey,1($ikey)
|
|
la $idx,0($idx,$dat)
|
|
nill $idx,255
|
|
la $iinp,1($iinp)
|
|
tml $ikey,255
|
|
llgc $dat,2($idx,$key)
|
|
stc $dat,2+256-1($ikey,$key)
|
|
stc $acc,2($idx,$key)
|
|
jz .Ldone
|
|
brct $cnt,.L2ndloop
|
|
lr $cnt,$len
|
|
la $iinp,0(%r0)
|
|
j .L2ndloop
|
|
.Ldone:
|
|
lm${g} %r6,%r8,6*$SIZE_T($sp)
|
|
br $rp
|
|
.size RC4_set_key,.-RC4_set_key
|
|
|
|
___
|
|
}
|
|
|
|
# const char *RC4_options()
|
|
$code.=<<___;
|
|
.globl RC4_options
|
|
.type RC4_options,\@function
|
|
.align 16
|
|
RC4_options:
|
|
larl %r2,.Loptions
|
|
br %r14
|
|
.size RC4_options,.-RC4_options
|
|
.section .rodata
|
|
.Loptions:
|
|
.align 8
|
|
.string "rc4(8x,char)"
|
|
___
|
|
|
|
print $code;
|
|
close STDOUT; # force flush
|