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openssl/crypto/perlasm/x86ms.pl
Bodo Möller 812d8a176c Unobtrusive backport of 32-bit x86 Montgomery improvements from 0.9.9-dev: 
you need to use "enable-montasm" to see a difference.  (Huge speed
advantage, but BN_MONT_CTX is not binary compatible, so this can't be
enabled by default in the 0.9.8 branch.)

The CHANGES entry also covers the 64-bit x86 backport in November 2007
by appro.
2008-05-01 23:11:34 +00:00

472 lines
7.7 KiB
Perl
Raw Blame History

#!/usr/local/bin/perl
package x86ms;
$label="L000";
%lb=( 'eax', 'al',
'ebx', 'bl',
'ecx', 'cl',
'edx', 'dl',
'ax', 'al',
'bx', 'bl',
'cx', 'cl',
'dx', 'dl',
);
%hb=( 'eax', 'ah',
'ebx', 'bh',
'ecx', 'ch',
'edx', 'dh',
'ax', 'ah',
'bx', 'bh',
'cx', 'ch',
'dx', 'dh',
);
sub main'asm_init_output { @out=(); }
sub main'asm_get_output { return(@out); }
sub main'get_labels { return(@labels); }
sub main'external_label
{
push(@labels,@_);
foreach (@_) {
push(@out, "EXTRN\t_$_:DWORD\n");
}
}
sub main'LB
{
(defined($lb{$_[0]})) || die "$_[0] does not have a 'low byte'\n";
return($lb{$_[0]});
}
sub main'HB
{
(defined($hb{$_[0]})) || die "$_[0] does not have a 'high byte'\n";
return($hb{$_[0]});
}
sub main'BP
{
&get_mem("BYTE",@_);
}
sub main'DWP
{
&get_mem("DWORD",@_);
}
sub main'QWP
{
&get_mem("QWORD",@_);
}
sub main'BC
{
return @_;
}
sub main'DWC
{
return @_;
}
sub main'stack_push
{
local($num)=@_;
$stack+=$num*4;
&main'sub("esp",$num*4);
}
sub main'stack_pop
{
local($num)=@_;
$stack-=$num*4;
&main'add("esp",$num*4);
}
sub get_mem
{
local($size,$addr,$reg1,$reg2,$idx)=@_;
local($t,$post);
local($ret)="$size PTR ";
$addr =~ s/^\s+//;
if ($addr =~ /^(.+)\+(.+)$/)
{
$reg2=&conv($1);
$addr="_$2";
}
elsif ($addr =~ /^[_a-z][_a-z0-9]*$/i)
{
$addr="_$addr";
}
if ($addr =~ /^.+\-.+$/) { $addr="($addr)"; }
$reg1="$regs{$reg1}" if defined($regs{$reg1});
$reg2="$regs{$reg2}" if defined($regs{$reg2});
if (($addr ne "") && ($addr ne 0))
{
if ($addr !~ /^-/)
{ $ret.=$addr; }
else { $post=$addr; }
}
if ($reg2 ne "")
{
$t="";
$t="*$idx" if ($idx != 0);
$reg1="+".$reg1 if ("$reg1$post" ne "");
$ret.="[$reg2$t$reg1$post]";
}
else
{
$ret.="[$reg1$post]"
}
$ret =~ s/\[\]//; # in case $addr was the only argument
return($ret);
}
sub main'mov { &out2("mov",@_); }
sub main'movb { &out2("mov",@_); }
sub main'and { &out2("and",@_); }
sub main'or { &out2("or",@_); }
sub main'shl { &out2("shl",@_); }
sub main'shr { &out2("shr",@_); }
sub main'xor { &out2("xor",@_); }
sub main'xorb { &out2("xor",@_); }
sub main'add { &out2("add",@_); }
sub main'adc { &out2("adc",@_); }
sub main'sub { &out2("sub",@_); }
sub main'sbb { &out2("sbb",@_); }
sub main'rotl { &out2("rol",@_); }
sub main'rotr { &out2("ror",@_); }
sub main'exch { &out2("xchg",@_); }
sub main'cmp { &out2("cmp",@_); }
sub main'lea { &out2("lea",@_); }
sub main'mul { &out1("mul",@_); }
sub main'imul { &out2("imul",@_); }
sub main'div { &out1("div",@_); }
sub main'dec { &out1("dec",@_); }
sub main'inc { &out1("inc",@_); }
sub main'jmp { &out1("jmp",@_); }
sub main'jmp_ptr { &out1p("jmp",@_); }
sub main'je { &out1("je",@_); }
sub main'jle { &out1("jle",@_); }
sub main'jz { &out1("jz",@_); }
sub main'jge { &out1("jge",@_); }
sub main'jl { &out1("jl",@_); }
sub main'ja { &out1("ja",@_); }
sub main'jae { &out1("jae",@_); }
sub main'jb { &out1("jb",@_); }
sub main'jbe { &out1("jbe",@_); }
sub main'jc { &out1("jc",@_); }
sub main'jnc { &out1("jnc",@_); }
sub main'jnz { &out1("jnz",@_); }
sub main'jne { &out1("jne",@_); }
sub main'jno { &out1("jno",@_); }
sub main'push { &out1("push",@_); $stack+=4; }
sub main'pop { &out1("pop",@_); $stack-=4; }
sub main'pushf { &out0("pushfd"); $stack+=4; }
sub main'popf { &out0("popfd"); $stack-=4; }
sub main'bswap { &out1("bswap",@_); &using486(); }
sub main'not { &out1("not",@_); }
sub main'call { &out1("call",($_[0]=~/^\$L/?'':'_').$_[0]); }
sub main'call_ptr { &out1p("call",@_); }
sub main'ret { &out0("ret"); }
sub main'nop { &out0("nop"); }
sub main'test { &out2("test",@_); }
sub main'bt { &out2("bt",@_); }
sub main'leave { &out0("leave"); }
sub main'cpuid { &out0("DW\t0A20Fh"); }
sub main'rdtsc { &out0("DW\t0310Fh"); }
sub main'halt { &out0("hlt"); }
sub main'movz { &out2("movzx",@_); }
sub main'neg { &out1("neg",@_); }
sub main'cld { &out0("cld"); }
# SSE2
sub main'emms { &out0("emms"); }
sub main'movd { &out2("movd",@_); }
sub main'movq { &out2("movq",@_); }
sub main'movdqu { &out2("movdqu",@_); }
sub main'movdqa { &out2("movdqa",@_); }
sub main'movdq2q{ &out2("movdq2q",@_); }
sub main'movq2dq{ &out2("movq2dq",@_); }
sub main'paddq { &out2("paddq",@_); }
sub main'pmuludq{ &out2("pmuludq",@_); }
sub main'psrlq { &out2("psrlq",@_); }
sub main'psllq { &out2("psllq",@_); }
sub main'pxor { &out2("pxor",@_); }
sub main'por { &out2("por",@_); }
sub main'pand { &out2("pand",@_); }
sub out2
{
local($name,$p1,$p2)=@_;
local($l,$t,$line);
$line="\t$name\t";
$t=&conv($p1).",";
$l=length($t);
$line.="$t";
$l=4-($l+9)/8;
$line.="\t" x $l;
$line.=&conv($p2);
if ($line=~/\bxmm[0-7]\b/i) { $line=~s/\b[A-Z]+WORD\s+PTR/XMMWORD PTR/i; }
push(@out,$line."\n");
}
sub out0
{
local($name)=@_;
push(@out,"\t$name\n");
}
sub out1
{
local($name,$p1)=@_;
local($l,$t);
push(@out,"\t$name\t".&conv($p1)."\n");
}
sub conv
{
local($p)=@_;
$p =~ s/0x([0-9A-Fa-f]+)/0$1h/;
return $p;
}
sub using486
{
return if $using486;
$using486++;
grep(s/\.386/\.486/,@out);
}
sub main'file
{
local($file)=@_;
local($tmp)=<<"EOF";
TITLE $file.asm
.386
.model FLAT
_TEXT\$ SEGMENT PAGE 'CODE'
EOF
push(@out,$tmp);
}
sub main'function_begin
{
local($func,$extra)=@_;
push(@labels,$func);
local($tmp)=<<"EOF";
PUBLIC _$func
$extra
_$func PROC NEAR
push ebp
push ebx
push esi
push edi
EOF
push(@out,$tmp);
$stack=20;
}
sub main'function_begin_B
{
local($func,$extra)=@_;
local($tmp)=<<"EOF";
PUBLIC _$func
$extra
_$func PROC NEAR
EOF
push(@out,$tmp);
$stack=4;
}
sub main'function_end
{
local($func)=@_;
local($tmp)=<<"EOF";
pop edi
pop esi
pop ebx
pop ebp
ret
_$func ENDP
EOF
push(@out,$tmp);
$stack=0;
%label=();
}
sub main'function_end_B
{
local($func)=@_;
local($tmp)=<<"EOF";
_$func ENDP
EOF
push(@out,$tmp);
$stack=0;
%label=();
}
sub main'function_end_A
{
local($func)=@_;
local($tmp)=<<"EOF";
pop edi
pop esi
pop ebx
pop ebp
ret
EOF
push(@out,$tmp);
}
sub main'file_end
{
# try to detect if SSE2 or MMX extensions were used...
my $xmmheader=<<___;
.686
.XMM
IF \@Version LT 800
XMMWORD STRUCT 16
DQ 2 dup (?)
XMMWORD ENDS
ENDIF
___
if (grep {/\b[x]?mm[0-7]\b/i} @out) {
grep {s/\.[3-7]86/$xmmheader/} @out;
}
push(@out,"_TEXT\$ ENDS\n");
push(@out,"END\n");
}
sub main'wparam
{
local($num)=@_;
return(&main'DWP($stack+$num*4,"esp","",0));
}
sub main'swtmp
{
return(&main'DWP($_[0]*4,"esp","",0));
}
# Should use swtmp, which is above esp. Linix can trash the stack above esp
#sub main'wtmp
# {
# local($num)=@_;
#
# return(&main'DWP(-(($num+1)*4),"esp","",0));
# }
sub main'comment
{
foreach (@_)
{
push(@out,"\t; $_\n");
}
}
sub main'public_label
{
$label{$_[0]}="_$_[0]" if (!defined($label{$_[0]}));
push(@out,"PUBLIC\t$label{$_[0]}\n");
}
sub main'label
{
if (!defined($label{$_[0]}))
{
$label{$_[0]}="\$${label}${_[0]}";
$label++;
}
return($label{$_[0]});
}
sub main'set_label
{
if (!defined($label{$_[0]}))
{
$label{$_[0]}="\$${label}${_[0]}";
$label++;
}
if ($_[1]!=0 && $_[1]>1)
{
main'align($_[1]);
}
if((defined $_[2]) && ($_[2] == 1))
{
push(@out,"$label{$_[0]}::\n");
}
elsif ($label{$_[0]} !~ /^\$/)
{
push(@out,"$label{$_[0]}\tLABEL PTR\n");
}
else
{
push(@out,"$label{$_[0]}:\n");
}
}
sub main'data_byte
{
push(@out,"\tDB\t".join(',',@_)."\n");
}
sub main'data_word
{
push(@out,"\tDD\t".join(',',@_)."\n");
}
sub main'align
{
push(@out,"\tALIGN\t$_[0]\n");
}
sub out1p
{
local($name,$p1)=@_;
local($l,$t);
push(@out,"\t$name\t".&conv($p1)."\n");
}
sub main'picmeup
{
local($dst,$sym)=@_;
&main'lea($dst,&main'DWP($sym));
}
sub main'blindpop { &out1("pop",@_); }
sub main'initseg
{
local($f)=@_;
local($tmp)=<<___;
OPTION DOTNAME
.CRT\$XCU SEGMENT DWORD PUBLIC 'DATA'
EXTRN _$f:NEAR
DD _$f
.CRT\$XCU ENDS
___
push(@out,$tmp);
}
1;
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