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openssl/crypto/perlasm/ppc-xlate.pl
Andy Polyakov 95c81f8c88 perlasm/ppc-xlate.pl: add new instructions and clean up. 
Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/6363)
2018-05-30 22:51:58 +02:00

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#! /usr/bin/env perl
# Copyright 2006-2018 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
my $flavour = shift;
my $output = shift;
open STDOUT,">$output" || die "can't open $output: $!";
my %GLOBALS;
my %TYPES;
my $dotinlocallabels=($flavour=~/linux/)?1:0;
################################################################
# directives which need special treatment on different platforms
################################################################
my $type = sub {
my ($dir,$name,$type) = @_;
$TYPES{$name} = $type;
if ($flavour =~ /linux/) {
$name =~ s|^\.||;
".type $name,$type";
} else {
"";
}
};
my $globl = sub {
my $junk = shift;
my $name = shift;
my $global = \$GLOBALS{$name};
my $type = \$TYPES{$name};
my $ret;
$name =~ s|^\.||;
SWITCH: for ($flavour) {
/aix/ && do { if (!$$type) {
$$type = "\@function";
}
if ($$type =~ /function/) {
$name = ".$name";
}
last;
};
/osx/ && do { $name = "_$name";
last;
};
/linux.*(32|64le)/
&& do { $ret .= ".globl $name";
if (!$$type) {
$ret .= "\n.type $name,\@function";
$$type = "\@function";
}
last;
};
/linux.*64/ && do { $ret .= ".globl $name";
if (!$$type) {
$ret .= "\n.type $name,\@function";
$$type = "\@function";
}
if ($$type =~ /function/) {
$ret .= "\n.section \".opd\",\"aw\"";
$ret .= "\n.align 3";
$ret .= "\n$name:";
$ret .= "\n.quad .$name,.TOC.\@tocbase,0";
$ret .= "\n.previous";
$name = ".$name";
}
last;
};
}
$ret = ".globl $name" if (!$ret);
$$global = $name;
$ret;
};
my $text = sub {
my $ret = ($flavour =~ /aix/) ? ".csect\t.text[PR],7" : ".text";
$ret = ".abiversion 2\n".$ret if ($flavour =~ /linux.*64le/);
$ret;
};
my $machine = sub {
my $junk = shift;
my $arch = shift;
if ($flavour =~ /osx/)
{ $arch =~ s/\"//g;
$arch = ($flavour=~/64/) ? "ppc970-64" : "ppc970" if ($arch eq "any");
}
".machine $arch";
};
my $size = sub {
if ($flavour =~ /linux/)
{ shift;
my $name = shift;
my $real = $GLOBALS{$name} ? \$GLOBALS{$name} : \$name;
my $ret = ".size $$real,.-$$real";
$name =~ s|^\.||;
if ($$real ne $name) {
$ret .= "\n.size $name,.-$$real";
}
$ret;
}
else
{ ""; }
};
my $asciz = sub {
shift;
my $line = join(",",@_);
if ($line =~ /^"(.*)"$/)
{ ".byte " . join(",",unpack("C*",$1),0) . "\n.align 2"; }
else
{ ""; }
};
my $quad = sub {
shift;
my @ret;
my ($hi,$lo);
for (@_) {
if (/^0x([0-9a-f]*?)([0-9a-f]{1,8})$/io)
{ $hi=$1?"0x$1":"0"; $lo="0x$2"; }
elsif (/^([0-9]+)$/o)
{ $hi=$1>>32; $lo=$1&0xffffffff; } # error-prone with 32-bit perl
else
{ $hi=undef; $lo=$_; }
if (defined($hi))
{ push(@ret,$flavour=~/le$/o?".long\t$lo,$hi":".long\t$hi,$lo"); }
else
{ push(@ret,".quad $lo"); }
}
join("\n",@ret);
};
################################################################
# simplified mnemonics not handled by at least one assembler
################################################################
my $cmplw = sub {
my $f = shift;
my $cr = 0; $cr = shift if ($#_>1);
# Some out-of-date 32-bit GNU assembler just can't handle cmplw...
($flavour =~ /linux.*32/) ?
" .long ".sprintf "0x%x",31<<26|$cr<<23|$_[0]<<16|$_[1]<<11|64 :
" cmplw ".join(',',$cr,@_);
};
my $bdnz = sub {
my $f = shift;
my $bo = $f=~/[\+\-]/ ? 16+9 : 16; # optional "to be taken" hint
" bc $bo,0,".shift;
} if ($flavour!~/linux/);
my $bltlr = sub {
my $f = shift;
my $bo = $f=~/\-/ ? 12+2 : 12; # optional "not to be taken" hint
($flavour =~ /linux/) ? # GNU as doesn't allow most recent hints
" .long ".sprintf "0x%x",19<<26|$bo<<21|16<<1 :
" bclr $bo,0";
};
my $bnelr = sub {
my $f = shift;
my $bo = $f=~/\-/ ? 4+2 : 4; # optional "not to be taken" hint
($flavour =~ /linux/) ? # GNU as doesn't allow most recent hints
" .long ".sprintf "0x%x",19<<26|$bo<<21|2<<16|16<<1 :
" bclr $bo,2";
};
my $beqlr = sub {
my $f = shift;
my $bo = $f=~/-/ ? 12+2 : 12; # optional "not to be taken" hint
($flavour =~ /linux/) ? # GNU as doesn't allow most recent hints
" .long ".sprintf "0x%X",19<<26|$bo<<21|2<<16|16<<1 :
" bclr $bo,2";
};
# GNU assembler can't handle extrdi rA,rS,16,48, or when sum of last two
# arguments is 64, with "operand out of range" error.
my $extrdi = sub {
my ($f,$ra,$rs,$n,$b) = @_;
$b = ($b+$n)&63; $n = 64-$n;
" rldicl $ra,$rs,$b,$n";
};
my $vmr = sub {
my ($f,$vx,$vy) = @_;
" vor $vx,$vy,$vy";
};
# Some ABIs specify vrsave, special-purpose register #256, as reserved
# for system use.
my $no_vrsave = ($flavour =~ /aix|linux64le/);
my $mtspr = sub {
my ($f,$idx,$ra) = @_;
if ($idx == 256 && $no_vrsave) {
" or $ra,$ra,$ra";
} else {
" mtspr $idx,$ra";
}
};
my $mfspr = sub {
my ($f,$rd,$idx) = @_;
if ($idx == 256 && $no_vrsave) {
" li $rd,-1";
} else {
" mfspr $rd,$idx";
}
};
# PowerISA 2.06 stuff
sub vsxmem_op {
my ($f, $vrt, $ra, $rb, $op) = @_;
" .long ".sprintf "0x%X",(31<<26)|($vrt<<21)|($ra<<16)|($rb<<11)|($op*2+1);
}
# made-up unaligned memory reference AltiVec/VMX instructions
my $lvx_u = sub { vsxmem_op(@_, 844); }; # lxvd2x
my $stvx_u = sub { vsxmem_op(@_, 972); }; # stxvd2x
my $lvdx_u = sub { vsxmem_op(@_, 588); }; # lxsdx
my $stvdx_u = sub { vsxmem_op(@_, 716); }; # stxsdx
my $lvx_4w = sub { vsxmem_op(@_, 780); }; # lxvw4x
my $stvx_4w = sub { vsxmem_op(@_, 908); }; # stxvw4x
my $lvx_splt = sub { vsxmem_op(@_, 332); }; # lxvdsx
# VSX instruction[s] masqueraded as made-up AltiVec/VMX
my $vpermdi = sub { # xxpermdi
my ($f, $vrt, $vra, $vrb, $dm) = @_;
$dm = oct($dm) if ($dm =~ /^0/);
" .long ".sprintf "0x%X",(60<<26)|($vrt<<21)|($vra<<16)|($vrb<<11)|($dm<<8)|(10<<3)|7;
};
# PowerISA 2.07 stuff
sub vcrypto_op {
my ($f, $vrt, $vra, $vrb, $op) = @_;
" .long ".sprintf "0x%X",(4<<26)|($vrt<<21)|($vra<<16)|($vrb<<11)|$op;
}
sub vfour {
my ($f, $vrt, $vra, $vrb, $vrc, $op) = @_;
" .long ".sprintf "0x%X",(4<<26)|($vrt<<21)|($vra<<16)|($vrb<<11)|($vrc<<6)|$op;
};
my $vcipher = sub { vcrypto_op(@_, 1288); };
my $vcipherlast = sub { vcrypto_op(@_, 1289); };
my $vncipher = sub { vcrypto_op(@_, 1352); };
my $vncipherlast= sub { vcrypto_op(@_, 1353); };
my $vsbox = sub { vcrypto_op(@_, 0, 1480); };
my $vshasigmad = sub { my ($st,$six)=splice(@_,-2); vcrypto_op(@_, $st<<4|$six, 1730); };
my $vshasigmaw = sub { my ($st,$six)=splice(@_,-2); vcrypto_op(@_, $st<<4|$six, 1666); };
my $vpmsumb = sub { vcrypto_op(@_, 1032); };
my $vpmsumd = sub { vcrypto_op(@_, 1224); };
my $vpmsubh = sub { vcrypto_op(@_, 1096); };
my $vpmsumw = sub { vcrypto_op(@_, 1160); };
# These are not really crypto, but vcrypto_op template works
my $vaddudm = sub { vcrypto_op(@_, 192); };
my $vadduqm = sub { vcrypto_op(@_, 256); };
my $vmuleuw = sub { vcrypto_op(@_, 648); };
my $vmulouw = sub { vcrypto_op(@_, 136); };
my $vrld = sub { vcrypto_op(@_, 196); };
my $vsld = sub { vcrypto_op(@_, 1476); };
my $vsrd = sub { vcrypto_op(@_, 1732); };
my $vsubudm = sub { vcrypto_op(@_, 1216); };
my $vaddcuq = sub { vcrypto_op(@_, 320); };
my $vaddeuqm = sub { vfour(@_,60); };
my $vaddecuq = sub { vfour(@_,61); };
my $mtsle = sub {
my ($f, $arg) = @_;
" .long ".sprintf "0x%X",(31<<26)|($arg<<21)|(147*2);
};
# VSX instructions masqueraded as AltiVec/VMX
my $mtvrd = sub {
my ($f, $vrt, $ra) = @_;
" .long ".sprintf "0x%X",(31<<26)|($vrt<<21)|($ra<<16)|(179<<1)|1;
};
my $mtvrwz = sub {
my ($f, $vrt, $ra) = @_;
" .long ".sprintf "0x%X",(31<<26)|($vrt<<21)|($ra<<16)|(243<<1)|1;
};
# PowerISA 3.0 stuff
my $maddhdu = sub { vfour(@_,49); };
my $maddld = sub { vfour(@_,51); };
my $darn = sub {
my ($f, $rt, $l) = @_;
" .long ".sprintf "0x%X",(31<<26)|($rt<<21)|($l<<16)|(755<<1);
};
my $iseleq = sub {
my ($f, $rt, $ra, $rb) = @_;
" .long ".sprintf "0x%X",(31<<26)|($rt<<21)|($ra<<16)|($rb<<11)|(2<<6)|30;
};
# VSX instruction[s] masqueraded as made-up AltiVec/VMX
my $vspltib = sub { # xxspltib
my ($f, $vrt, $imm8) = @_;
$imm8 = oct($imm8) if ($imm8 =~ /^0/);
$imm8 &= 0xff;
" .long ".sprintf "0x%X",(60<<26)|($vrt<<21)|($imm8<<11)|(360<<1)|1;
};
# PowerISA 3.0B stuff
my $addex = sub {
my ($f, $rt, $ra, $rb, $cy) = @_; # only cy==0 is specified in 3.0B
" .long ".sprintf "0x%X",(31<<26)|($rt<<21)|($ra<<16)|($rb<<11)|($cy<<9)|(170<<1);
};
my $vmsumudm = sub { vfour(@_,35); };
while($line=<>) {
$line =~ s|[#!;].*$||; # get rid of asm-style comments...
$line =~ s|/\*.*\*/||; # ... and C-style comments...
$line =~ s|^\s+||; # ... and skip white spaces in beginning...
$line =~ s|\s+$||; # ... and at the end
{
$line =~ s|\.L(\w+)|L$1|g; # common denominator for Locallabel
$line =~ s|\bL(\w+)|\.L$1|g if ($dotinlocallabels);
}
{
$line =~ s|(^[\.\w]+)\:\s*||;
my $label = $1;
if ($label) {
my $xlated = ($GLOBALS{$label} or $label);
print "$xlated:";
if ($flavour =~ /linux.*64le/) {
if ($TYPES{$label} =~ /function/) {
printf "\n.localentry %s,0\n",$xlated;
}
}
}
}
{
$line =~ s|^\s*(\.?)(\w+)([\.\+\-]?)\s*||;
my $c = $1; $c = "\t" if ($c eq "");
my $mnemonic = $2;
my $f = $3;
my $opcode = eval("\$$mnemonic");
$line =~ s/\b(c?[rf]|v|vs)([0-9]+)\b/$2/g if ($c ne "." and $flavour !~ /osx/);
if (ref($opcode) eq 'CODE') { $line = &$opcode($f,split(/,\s*/,$line)); }
elsif ($mnemonic) { $line = $c.$mnemonic.$f."\t".$line; }
}
print $line if ($line);
print "\n";
}
close STDOUT;
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