1 files changed, 362 insertions, 0 deletions

diff --git a/src/lib/libcrypto/perlasm/x86nasm.pl b/src/lib/libcrypto/perlasm/x86nasm.pl
new file mode 100644
index 0000000000..5009acb4b3
--- /dev/null
+++ b/src/lib/libcrypto/perlasm/x86nasm.pl
@@ -0,0 +1,362 @@
+#!/usr/local/bin/perl
+
+package x86nasm;
+
+$label="L000";
+
+%lb=(   'eax',  'al',
+        'ebx',  'bl',
+        'ecx',  'cl',
+        'edx',  'dl',
+        'ax',   'al',
+        'bx',   'bl',
+        'cx',   'cl',
+        'dx',   'dl',
+        );
+
+%hb=(   'eax',  'ah',
+        'ebx',  'bh',
+        'ecx',  'ch',
+        'edx',  'dh',
+        'ax',   'ah',
+        'bx',   'bh',
+        'cx',   'ch',
+        'dx',   'dh',
+        );
+
+sub main'asm_init_output { @out=(); }
+sub main'asm_get_output { return(@out); }
+sub main'get_labels { return(@labels); }
+
+sub main'external_label
+{
+        push(@labels,@_);
+        foreach (@_) {
+                push(@out, "extern\t_$_\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'BC
+        {
+        return "BYTE @_";
+        }
+
+sub main'DWC
+        {
+        return "DWORD @_";
+        }
+
+sub main'stack_push
+        {
+        my($num)=@_;
+        $stack+=$num*4;
+        &main'sub("esp",$num*4);
+        }
+
+sub main'stack_pop
+        {
+        my($num)=@_;
+        $stack-=$num*4;
+        &main'add("esp",$num*4);
+        }
+
+sub get_mem
+        {
+        my($size,$addr,$reg1,$reg2,$idx)=@_;
+        my($t,$post);
+        my($ret)="$size [";
+        $addr =~ s/^\s+//;
+        if ($addr =~ /^(.+)\+(.+)$/)
+                {
+                $reg2=&conv($1);
+                $addr="_$2";
+                }
+        elsif ($addr =~ /^[_a-zA-Z]/)
+                {
+                $addr="_$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'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'div    { &out1("div",@_); }
+sub main'dec    { &out1("dec",@_); }
+sub main'inc    { &out1("inc",@_); }
+sub main'jmp    { &out1("jmp",@_); }
+sub main'jmp_ptr { &out1p("jmp",@_); }
+
+# This is a bit of a kludge: declare all branches as NEAR.
+sub main'je     { &out1("je NEAR",@_); }
+sub main'jle    { &out1("jle NEAR",@_); }
+sub main'jz     { &out1("jz NEAR",@_); }
+sub main'jge    { &out1("jge NEAR",@_); }
+sub main'jl     { &out1("jl NEAR",@_); }
+sub main'ja     { &out1("ja NEAR",@_); }
+sub main'jae    { &out1("jae NEAR",@_); }
+sub main'jb     { &out1("jb NEAR",@_); }
+sub main'jbe    { &out1("jbe NEAR",@_); }
+sub main'jc     { &out1("jc NEAR",@_); }
+sub main'jnc    { &out1("jnc NEAR",@_); }
+sub main'jnz    { &out1("jnz NEAR",@_); }
+sub main'jne    { &out1("jne NEAR",@_); }
+sub main'jno    { &out1("jno NEAR",@_); }
+
+sub main'push   { &out1("push",@_); $stack+=4; }
+sub main'pop    { &out1("pop",@_); $stack-=4; }
+sub main'bswap  { &out1("bswap",@_); &using486(); }
+sub main'not    { &out1("not",@_); }
+sub main'call   { &out1("call",($_[0]=~/^\$L/?'':'_').$_[0]); }
+sub main'ret    { &out0("ret"); }
+sub main'nop    { &out0("nop"); }
+sub main'movz   { &out2("movzx",@_); }
+
+sub out2
+        {
+        my($name,$p1,$p2)=@_;
+        my($l,$t);
+
+        push(@out,"\t$name\t");
+        if ($name eq "lea")
+                {
+                $p1 =~ s/^[^\[]*\[/\[/;
+                $p2 =~ s/^[^\[]*\[/\[/;
+                }
+        $t=&conv($p1).",";
+        $l=length($t);
+        push(@out,$t);
+        $l=4-($l+9)/8;
+        push(@out,"\t" x $l);
+        push(@out,&conv($p2));
+        push(@out,"\n");
+        }
+
+sub out0
+        {
+        my($name)=@_;
+
+        push(@out,"\t$name\n");
+        }
+
+sub out1
+        {
+        my($name,$p1)=@_;
+        my($l,$t);
+        push(@out,"\t$name\t".&conv($p1)."\n");
+        }
+
+sub conv
+        {
+        my($p)=@_;
+        $p =~ s/0x([0-9A-Fa-f]+)/0$1h/;
+        return $p;
+        }
+
+sub using486
+        {
+        return if $using486;
+        $using486++;
+        grep(s/\.386/\.486/,@out);
+        }
+
+sub main'file
+        {
+        push(@out, "segment .text use32\n");
+        }
+
+sub main'function_begin
+        {
+        my($func,$extra)=@_;
+
+        push(@labels,$func);
+        my($tmp)=<<"EOF";
+global  _$func
+_$func:
+        push    ebp
+        push    ebx
+        push    esi
+        push    edi
+EOF
+        push(@out,$tmp);
+        $stack=20;
+        }
+
+sub main'function_begin_B
+        {
+        my($func,$extra)=@_;
+        my($tmp)=<<"EOF";
+global  _$func
+_$func:
+EOF
+        push(@out,$tmp);
+        $stack=4;
+        }
+
+sub main'function_end
+        {
+        my($func)=@_;
+
+        my($tmp)=<<"EOF";
+        pop     edi
+        pop     esi
+        pop     ebx
+        pop     ebp
+        ret
+EOF
+        push(@out,$tmp);
+        $stack=0;
+        %label=();
+        }
+
+sub main'function_end_B
+        {
+        $stack=0;
+        %label=();
+        }
+
+sub main'function_end_A
+        {
+        my($func)=@_;
+
+        my($tmp)=<<"EOF";
+        pop     edi
+        pop     esi
+        pop     ebx
+        pop     ebp
+        ret
+EOF
+        push(@out,$tmp);
+        }
+
+sub main'file_end
+        {
+        }
+
+sub main'wparam
+        {
+        my($num)=@_;
+
+        return(&main'DWP($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
+#       {
+#       my($num)=@_;
+#
+#       return(&main'DWP(-(($num+1)*4),"esp","",0));
+#       }
+
+sub main'comment
+        {
+        foreach (@_)
+                {
+                push(@out,"\t; $_\n");
+                }
+        }
+
+sub main'label
+        {
+        if (!defined($label{$_[0]}))
+                {
+                $label{$_[0]}="\$${label}${_[0]}";
+                $label++;
+                }
+        return($label{$_[0]});
+        }
+
+sub main'set_label
+        {
+        if (!defined($label{$_[0]}))
+                {
+                $label{$_[0]}="\$${label}${_[0]}";
+                $label++;
+                }
+        push(@out,"$label{$_[0]}:\n");
+        }
+
+sub main'data_word
+        {
+        push(@out,"\tDD\t$_[0]\n");
+        }
+
+sub out1p
+        {
+        my($name,$p1)=@_;
+        my($l,$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",@_); }