-#!/usr/local/bin/perl
+#!/usr/bin/env perl
package x86nasm;
-$label="L000";
-$under=($main'netware)?'':'_';
-
-%lb=( 'eax', 'al',
- 'ebx', 'bl',
- 'ecx', 'cl',
- 'edx', 'dl',
- 'ax', 'al',
- 'bx', 'bl',
- 'cx', 'cl',
- 'dx', 'dl',
- );
-
-%hb=( 'eax', 'ah',
- 'ebx', 'bh',
- 'ecx', 'ch',
- 'edx', 'dh',
- 'ax', 'ah',
- 'bx', 'bh',
- 'cx', 'ch',
- 'dx', 'dh',
- );
-
-sub main'asm_init_output { @out=(); }
-sub main'asm_get_output { return(@out); }
-sub main'get_labels { return(@labels); }
-
-sub main'external_label
-{
- push(@labels,@_);
- foreach (@_) {
- push(@out,".") if ($main'mwerks);
- push(@out, "extern\t${under}$_\n");
- }
-}
+*out=\@::out;
+
+$lbdecor="\@L"; # local label decoration
+$nmdecor=$::netware?"":"_"; # external name decoration
+$drdecor=$::mwerks?".":""; # directive decoration
+
+$label="000";
+$initseg="";
-sub main'LB
- {
- (defined($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{$_[0]});
- }
-
-sub main'BP
- {
- &get_mem("BYTE",@_);
- }
-
-sub main'DWP
- {
- &get_mem("DWORD",@_);
- }
-
-sub main'QWP
- {
- &get_mem("",@_);
- }
-
-sub main'BC
- {
- return (($main'mwerks)?"":"BYTE ")."@_";
- }
-
-sub main'DWC
- {
- return (($main'mwerks)?"":"DWORD ")."@_";
- }
-
-sub main'stack_push
- {
- my($num)=@_;
- $stack+=$num*4;
- &main'sub("esp",$num*4);
- }
-
-sub main'stack_pop
- {
- my($num)=@_;
- $stack-=$num*4;
- &main'add("esp",$num*4);
- }
+sub ::generic
+{ my $opcode=shift;
+ my $tmp;
+
+ if (!$::mwerks)
+ { if ($opcode =~ m/^j/o && $#_==0) # optimize jumps
+ { $_[0] = "NEAR $_[0]"; }
+ elsif ($opcode eq "lea" && $#_==1)# wipe storage qualifier from lea
+ { $_[1] =~ s/^[^\[]*\[/\[/o; }
+ }
+ &::emit($opcode,@_);
+ 1;
+}
+#
+# opcodes not covered by ::generic above, mostly inconsistent namings...
+#
+sub ::movz { &::movzx(@_); }
+sub ::pushf { &::pushfd; }
+sub ::popf { &::popfd; }
+
+sub ::call { &::emit("call",(&islabel($_[0]) or "$nmdecor$_[0]")); }
+sub ::call_ptr { &::emit("call",@_); }
+sub ::jmp_ptr { &::emit("jmp",@_); }
+
+# chosen SSE instructions
+sub ::movq
+{ my($p1,$p2,$optimize)=@_;
+
+ if ($optimize && $p1=~/^mm[0-7]$/ && $p2=~/^mm[0-7]$/)
+ # movq between mmx registers can sink Intel CPUs
+ { &::pshufw($p1,$p2,0xe4); }
+ else
+ { &::emit("movq",@_); }
+}
+sub ::pshufw { &::emit("pshufw",@_); }
sub get_mem
- {
- my($size,$addr,$reg1,$reg2,$idx)=@_;
- my($t,$post);
- my($ret)=$size;
- if ($ret ne "")
- {
- $ret .= " PTR" if ($main'mwerks);
- $ret .= " ";
- }
- $ret .= "[";
- $addr =~ s/^\s+//;
- if ($addr =~ /^(.+)\+(.+)$/)
- {
- $reg2=&conv($1);
- $addr="$under$2";
- }
- elsif ($addr =~ /^[_a-z][_a-z0-9]*$/i)
- {
- $addr="$under$addr";
- }
-
- if ($addr =~ /^.+\-.+$/) { $addr="($addr)"; }
-
- $reg1="$regs{$reg1}" if defined($regs{$reg1});
- $reg2="$regs{$reg2}" if defined($regs{$reg2});
- if (($addr ne "") && ($addr ne 0))
- {
- if ($addr !~ /^-/)
- { $ret.="${addr}+"; }
- else { $post=$addr; }
- }
- if ($reg2 ne "")
- {
- $t="";
- $t="*$idx" if ($idx != 0);
- $reg1="+".$reg1 if ("$reg1$post" ne "");
- $ret.="$reg2$t$reg1$post]";
- }
- else
- {
- $ret.="$reg1$post]"
- }
- $ret =~ s/\+\]/]/; # 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'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.
-$near=($main'mwerks)?'':'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'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/?'':$under).$_[0]); }
-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("cpuid"); }
-sub main'rdtsc { &out0("rdtsc"); }
-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
- {
- my($name,$p1,$p2)=@_;
- my($l,$t);
-
- push(@out,"\t$name\t");
- if (!$main'mwerks and $name eq "lea")
- {
- $p1 =~ s/^[^\[]*\[/\[/;
- $p2 =~ s/^[^\[]*\[/\[/;
- }
- $t=&conv($p1).",";
- $l=length($t);
- push(@out,$t);
- $l=4-($l+9)/8;
- push(@out,"\t" x $l);
- push(@out,&conv($p2));
- push(@out,"\n");
- }
-
-sub out0
- {
- my($name)=@_;
-
- push(@out,"\t$name\n");
- }
-
-sub out1
- {
- my($name,$p1)=@_;
- my($l,$t);
- push(@out,"\t$name\t".&conv($p1)."\n");
- }
-
-sub conv
- {
- my($p)=@_;
- $p =~ s/0x([0-9A-Fa-f]+)/0$1h/;
- return $p;
- }
-
-sub using486
- {
- return if $using486;
- $using486++;
- grep(s/\.386/\.486/,@out);
- }
-
-sub main'file
- {
- if ($main'mwerks) { push(@out,".section\t.text\n"); }
- else { push(@out,"section\t.text use32\n"); }
- }
-
-sub main'function_begin
- {
- my($func,$extra)=@_;
-
- push(@labels,$func);
- my($tmp)=<<"EOF";
-global $under$func
-$under$func:
- push ebp
- push ebx
- push esi
- push edi
-EOF
- push(@out,$tmp);
- $stack=20;
- }
-
-sub main'function_begin_B
- {
- my($func,$extra)=@_;
- my($tmp)=<<"EOF";
-global $under$func
-$under$func:
-EOF
+{ my($size,$addr,$reg1,$reg2,$idx)=@_;
+ my($post,$ret);
+
+ if ($size ne "")
+ { $ret .= "$size";
+ $ret .= " PTR" if ($::mwerks);
+ $ret .= " ";
+ }
+ $ret .= "[";
+
+ $addr =~ s/^\s+//;
+ # prepend global references with optional underscore
+ $addr =~ s/^([^\+\-0-9][^\+\-]*)/islabel($1) or "$nmdecor$1"/ige;
+ # put address arithmetic expression in parenthesis
+ $addr="($addr)" if ($addr =~ /^.+[\-\+].+$/);
+
+ if (($addr ne "") && ($addr ne 0))
+ { if ($addr !~ /^-/) { $ret .= "$addr+"; }
+ else { $post=$addr; }
+ }
+
+ if ($reg2 ne "")
+ { $idx!=0 or $idx=1;
+ $ret .= "$reg2*$idx";
+ $ret .= "+$reg1" if ($reg1 ne "");
+ }
+ else
+ { $ret .= "$reg1"; }
+
+ $ret .= "$post]";
+ $ret =~ s/\+\]/]/; # in case $addr was the only argument
+
+ $ret;
+}
+sub ::BP { &get_mem("BYTE",@_); }
+sub ::DWP { &get_mem("DWORD",@_); }
+sub ::QWP { &get_mem("",@_); }
+sub ::BC { (($::mwerks)?"":"BYTE ")."@_"; }
+sub ::DWC { (($::mwerks)?"":"DWORD ")."@_"; }
+
+sub ::file
+{ if ($::mwerks) { push(@out,".section\t.text\n"); }
+ else
+ { my $tmp=<<___;
+%ifdef __omf__
+section code use32 class=code align=64
+%else
+section .text code align=64
+%endif
+___
push(@out,$tmp);
- $stack=4;
- }
+ }
+}
-sub main'function_end
- {
- my($func)=@_;
+sub ::function_begin_B
+{ my $func=shift;
+ my $global=($func !~ /^_/);
+ my $begin="${lbdecor}_${func}_begin";
- my($tmp)=<<"EOF";
- pop edi
- pop esi
+ $label{$func}=$global?"$begin":"$nmdecor$func";
+ $func=$nmdecor.$func;
+
+ push(@out,"${drdecor}global $func\n") if ($global);
+ push(@out,"${drdecor}align 16\n");
+ push(@out,"$func:\n");
+ push(@out,"$begin:\n") if ($global);
+ $::stack=4;
+}
+sub ::function_end_B
+{ my $i;
+ foreach $i (keys %label)
+ { delete $label{$i} if ($label{$i} =~ /^${lbdecor}[0-9]{3}/); }
+ $::stack=0;
+}
+
+sub ::file_end
+{ # try to detect if SSE2 or MMX extensions were used on Win32...
+ if ($::win32 && grep {/\b[x]?mm[0-7]\b|OPENSSL_ia32cap_P\b/i} @out)
+ { # $1<<10 sets a reserved bit to signal that variable
+ # was initialized already...
+ my $code=<<___;
+align 16
+${lbdecor}OPENSSL_ia32cap_init:
+ lea edx,[${nmdecor}OPENSSL_ia32cap_P]
+ cmp DWORD [edx],0
+ jne NEAR ${lbdecor}nocpuid
+ mov DWORD [edx],1<<10
+ pushfd
+ pop eax
+ mov ecx,eax
+ xor eax,1<<21
+ push eax
+ popfd
+ pushfd
+ pop eax
+ xor eax,ecx
+ bt eax,21
+ jnc NEAR ${lbdecor}nocpuid
+ push ebp
+ push edi
+ push ebx
+ mov edi,edx
+ xor eax,eax
+ cpuid
+ xor eax,eax
+ cmp ebx,'Genu'
+ setne al
+ mov ebp,eax
+ cmp edx,'ineI'
+ setne al
+ or ebp,eax
+ cmp eax,'ntel'
+ setne al
+ or ebp,eax
+ mov eax,1
+ cpuid
+ cmp ebp,0
+ jne ${lbdecor}notP4
+ and ah,15
+ cmp ah,15
+ jne ${lbdecor}notP4
+ or edx,1<<20
+${lbdecor}notP4:
+ bt edx,28
+ jnc ${lbdecor}done
+ shr ebx,16
+ cmp bl,1
+ ja ${lbdecor}done
+ and edx,0xefffffff
+${lbdecor}done:
+ or edx,1<<10
+ mov DWORD [edi],edx
pop ebx
+ pop edi
pop ebp
+${lbdecor}nocpuid:
ret
-EOF
- push(@out,$tmp);
- $stack=0;
- %label=();
- }
+segment .CRT\$XCU data align=4
+dd ${lbdecor}OPENSSL_ia32cap_init
+___
+ my $data=<<___;
+segment .bss
+common ${nmdecor}OPENSSL_ia32cap_P 4
+___
-sub main'function_end_B
- {
- $stack=0;
- %label=();
- }
+ #<not needed in OpenSSL context>#push (@out,$code);
-sub main'function_end_A
- {
- my($func)=@_;
+ # comment out OPENSSL_ia32cap_P declarations
+ grep {s/(^extern\s+${nmdecor}OPENSSL_ia32cap_P)/\;$1/} @out;
+ push (@out,$data)
+ }
+ push (@out,$initseg) if ($initseg);
+}
- my($tmp)=<<"EOF";
- pop edi
- pop esi
- pop ebx
- pop ebp
- ret
-EOF
- push(@out,$tmp);
- }
+sub ::comment { foreach (@_) { push(@out,"\t; $_\n"); } }
-sub main'file_end
- {
- }
+sub islabel # see is argument is known label
+{ my $i;
+ foreach $i (values %label) { return $i if ($i eq $_[0]); }
+ $label{$_[0]}; # can be undef
+}
-sub main'wparam
- {
- my($num)=@_;
+sub ::external_label
+{ push(@labels,@_);
+ foreach (@_)
+ { push(@out, "${drdecor}extern\t${nmdecor}$_\n"); }
+}
- return(&main'DWP($stack+$num*4,"esp","",0));
- }
+sub ::public_label
+{ $label{$_[0]}="${nmdecor}${_[0]}" if (!defined($label{$_[0]}));
+ push(@out,"${drdecor}global\t$label{$_[0]}\n");
+}
-sub main'swtmp
- {
- return(&main'DWP($_[0]*4,"esp","",0));
- }
+sub ::label
+{ if (!defined($label{$_[0]}))
+ { $label{$_[0]}="${lbdecor}${label}${_[0]}"; $label++; }
+ $label{$_[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'public_label
- {
- $label{$_[0]}="${under}${_[0]}" if (!defined($label{$_[0]}));
- push(@out,"global\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]);
- }
- push(@out,"$label{$_[0]}:\n");
- }
-
-sub main'data_word
- {
- push(@out,(($main'mwerks)?".long\t":"DD\t").join(',',@_)."\n");
- }
-
-sub main'align
- {
- push(@out,".") if ($main'mwerks);
- push(@out,"align\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($sym));
- }
-
-sub main'blindpop { &out1("pop",@_); }
-
-sub main'initseg
- {
- local($f)=@_;
- if ($main'win32)
- {
- local($tmp)=<<___;
-segment .CRT\$XIU data
-extern $under$f
-DD $under$f
+sub ::set_label
+{ my $label=&::label($_[0]);
+ &::align($_[1]) if ($_[1]>1);
+ push(@out,"$label{$_[0]}:\n");
+}
+
+sub ::data_byte
+{ push(@out,(($::mwerks)?".byte\t":"db\t").join(',',@_)."\n"); }
+
+sub ::data_word
+{ push(@out,(($::mwerks)?".long\t":"dd\t").join(',',@_)."\n"); }
+
+sub ::align
+{ push(@out,"${drdecor}align\t$_[0]\n"); }
+
+sub ::picmeup
+{ my($dst,$sym)=@_;
+ &::lea($dst,&::DWP($sym));
+}
+
+sub ::initseg
+{ my($f)=$nmdecor.shift;
+ if ($::win32)
+ { $initseg=<<___;
+segment .CRT\$XCU data align=4
+extern $f
+dd $f
___
- push(@out,$tmp);
- }
- }
+ }
+}
1;
projects / openssl.git / blobdiff