Synchronize x86 perlasm with HEAD.

This commit is contained in:
Andy Polyakov 2007-07-23 15:12:20 +00:00
parent be22102d82
commit 0fa79cbe17
4 changed files with 578 additions and 1699 deletions

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@ -1,130 +1,143 @@
#!/usr/local/bin/perl
#!/usr/bin/env perl
# require 'x86asm.pl';
# &asm_init("cpp","des-586.pl");
# XXX
# XXX
# main'asm_finish
# &asm_init(<flavor>,"des-586.pl"[,$i386only]);
# &function_begin("foo");
# ...
# &function_end("foo");
# &asm_finish
sub main'asm_finish
{
&file_end();
&asm_finish_cpp() if $cpp;
print &asm_get_output();
}
# AUTOLOAD is this context has quite unpleasant side effect, namely
# that typos in function calls effectively go to assembler output,
# but on the pros side we don't have to implement one subroutine per
# each opcode...
sub ::AUTOLOAD
{ my $opcode = $AUTOLOAD;
sub main'asm_init
{
($type,$fn,$i386)=@_;
$filename=$fn;
die "more than 2 arguments passed to $opcode" if ($#_>1);
$elf=$cpp=$coff=$aout=$win32=$netware=$mwerks=0;
if ( ($type eq "elf"))
{ $elf=1; require "x86unix.pl"; }
elsif ( ($type eq "a.out"))
{ $aout=1; require "x86unix.pl"; }
elsif ( ($type eq "coff" or $type eq "gaswin"))
{ $coff=1; require "x86unix.pl"; }
elsif ( ($type eq "cpp"))
{ $cpp=1; require "x86unix.pl"; }
elsif ( ($type eq "win32"))
{ $win32=1; require "x86ms.pl"; }
elsif ( ($type eq "win32n"))
{ $win32=1; require "x86nasm.pl"; }
elsif ( ($type eq "nw-nasm"))
{ $netware=1; require "x86nasm.pl"; }
elsif ( ($type eq "nw-mwasm"))
{ $netware=1; $mwerks=1; require "x86nasm.pl"; }
else
{
print STDERR <<"EOF";
$opcode =~ s/.*:://;
if ($opcode =~ /^push/) { $stack+=4; }
elsif ($opcode =~ /^pop/) { $stack-=4; }
&generic($opcode,@_) or die "undefined subroutine \&$AUTOLOAD";
}
$out=();
$i386=0;
sub ::emit
{ my $opcode=shift;
if ($#_==-1) { push(@out,"\t$opcode\n"); }
else { push(@out,"\t$opcode\t".join(',',@_)."\n"); }
}
sub ::LB
{ $_[0] =~ m/^e?([a-d])x$/o or die "$_[0] does not have a 'low byte'";
$1."l";
}
sub ::HB
{ $_[0] =~ m/^e?([a-d])x$/o or die "$_[0] does not have a 'high byte'";
$1."h";
}
sub ::stack_push{ my $num=$_[0]*4; $stack+=$num; &sub("esp",$num); }
sub ::stack_pop { my $num=$_[0]*4; $stack-=$num; &add("esp",$num); }
sub ::blindpop { &pop($_[0]); $stack+=4; }
sub ::wparam { &DWP($stack+4*$_[0],"esp"); }
sub ::swtmp { &DWP(4*$_[0],"esp"); }
sub ::bswap
{ if ($i386) # emulate bswap for i386
{ &comment("bswap @_");
&xchg(&HB(@_),&LB(@_));
&ror (@_,16);
&xchg(&HB(@_),&LB(@_));
}
else
{ &generic("bswap",@_); }
}
# These are made-up opcodes introduced over the years essentially
# by ignorance, just alias them to real ones...
sub ::movb { &mov(@_); }
sub ::xorb { &xor(@_); }
sub ::rotl { &rol(@_); }
sub ::rotr { &ror(@_); }
sub ::exch { &xchg(@_); }
sub ::halt { &hlt; }
sub ::function_begin
{ &function_begin_B(@_);
$stack=4;
&push("ebp");
&push("ebx");
&push("esi");
&push("edi");
}
sub ::function_end
{ &pop("edi");
&pop("esi");
&pop("ebx");
&pop("ebp");
&ret();
$stack=0;
&function_end_B(@_);
}
sub ::function_end_A
{ &pop("edi");
&pop("esi");
&pop("ebx");
&pop("ebp");
&ret();
$stack+=16; # readjust esp as if we didn't pop anything
}
sub ::asciz { foreach (@_) { &data_byte(unpack("C*",$_),0); } }
sub ::asm_finish
{ &file_end();
print @out;
}
sub ::asm_init
{ my ($type,$fn,$cpu)=@_;
$filename=$fn;
$i386=$cpu;
$elf=$cpp=$coff=$aout=$win32=$netware=$mwerks=0;
if (($type eq "elf"))
{ $elf=1; require "x86unix.pl"; }
elsif (($type eq "a\.out"))
{ $aout=1; require "x86unix.pl"; }
elsif (($type eq "coff" or $type eq "gaswin"))
{ $coff=1; require "x86unix.pl"; }
elsif (($type eq "win32n"))
{ $win32=1; require "x86nasm.pl"; }
elsif (($type eq "nw-nasm"))
{ $netware=1; require "x86nasm.pl"; }
elsif (($type eq "nw-mwasm"))
{ $netware=1; $mwerks=1; require "x86nasm.pl"; }
else
{ print STDERR <<"EOF";
Pick one target type from
elf - Linux, FreeBSD, Solaris x86, etc.
a.out - OpenBSD, DJGPP, etc.
a.out - DJGPP, elder OpenBSD, etc.
coff - GAS/COFF such as Win32 targets
win32 - Windows 95/Windows NT
win32n - Windows 95/Windows NT NASM format
nw-nasm - NetWare NASM format
nw-mwasm- NetWare Metrowerks Assembler
EOF
exit(1);
}
exit(1);
}
$pic=0;
for (@ARGV) { $pic=1 if (/\-[fK]PIC/i); }
$pic=0;
for (@ARGV) { $pic=1 if (/\-[fK]PIC/i); }
&asm_init_output();
&comment("Don't even think of reading this code");
&comment("It was automatically generated by $filename");
&comment("Which is a perl program used to generate the x86 assember for");
&comment("any of ELF, a.out, COFF, Win32, ...");
&comment("eric <eay\@cryptsoft.com>");
&comment("");
$filename =~ s/\.pl$//;
&file($filename);
}
sub asm_finish_cpp
{
return unless $cpp;
local($tmp,$i);
foreach $i (&get_labels())
{
$tmp.="#define $i _$i\n";
}
print <<"EOF";
/* Run the C pre-processor over this file with one of the following defined
* ELF - elf object files,
* OUT - a.out object files,
* BSDI - BSDI style a.out object files
* SOL - Solaris style elf
*/
#define TYPE(a,b) .type a,b
#define SIZE(a,b) .size a,b
#if defined(OUT) || (defined(BSDI) && !defined(ELF))
$tmp
#endif
#ifdef OUT
#define OK 1
#define ALIGN 4
#if defined(__CYGWIN__) || defined(__DJGPP__) || (__MINGW32__)
#undef SIZE
#undef TYPE
#define SIZE(a,b)
#define TYPE(a,b) .def a; .scl 2; .type 32; .endef
#endif /* __CYGWIN || __DJGPP */
#endif
#if defined(BSDI) && !defined(ELF)
#define OK 1
#define ALIGN 4
#undef SIZE
#undef TYPE
#define SIZE(a,b)
#define TYPE(a,b)
#endif
#if defined(ELF) || defined(SOL)
#define OK 1
#define ALIGN 16
#endif
#ifndef OK
You need to define one of
ELF - elf systems - linux-elf, NetBSD and DG-UX
OUT - a.out systems - linux-a.out and FreeBSD
SOL - solaris systems, which are elf with strange comment lines
BSDI - a.out with a very primative version of as.
#endif
/* Let the Assembler begin :-) */
EOF
}
$filename =~ s/\.pl$//;
&file($filename);
}
1;

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@ -1,462 +0,0 @@
#!/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'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...
if (grep {/\b[x]?mm[0-7]\b,/i} @out) {
grep {s/\.[3-7]86/\.686\n\t\.XMM/} @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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@ -1,451 +1,228 @@
#!/usr/local/bin/perl
#!/usr/bin/env perl
package x86nasm;
$label="L000";
$under=($main'netware)?'':'_';
*out=\@::out;
%lb=( 'eax', 'al',
'ebx', 'bl',
'ecx', 'cl',
'edx', 'dl',
'ax', 'al',
'bx', 'bl',
'cx', 'cl',
'dx', 'dl',
);
$lprfx="\@L";
$label="000";
$under=($::netware)?'':'_';
%hb=( 'eax', 'ah',
'ebx', 'bh',
'ecx', 'ch',
'edx', 'dh',
'ax', 'ah',
'bx', 'bh',
'cx', 'ch',
'dx', 'dh',
);
sub ::generic
{ my $opcode=shift;
my $tmp;
sub main'asm_init_output { @out=(); }
sub main'asm_get_output { return(@out); }
sub main'get_labels { return(@labels); }
sub main'external_label
{
push(@labels,@_);
foreach (@_) {
push(@out,".") if ($main'mwerks);
push(@out, "extern\t${under}$_\n");
}
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 main'LB
{
(defined($lb{$_[0]})) || die "$_[0] does not have a 'low byte'\n";
return($lb{$_[0]});
}
sub ::call { &::emit("call",(&islabel($_[0]) or "$under$_[0]")); }
sub ::call_ptr { &::emit("call",@_); }
sub ::jmp_ptr { &::emit("jmp",@_); }
sub main'HB
{
(defined($hb{$_[0]})) || die "$_[0] does not have a 'high byte'\n";
return($hb{$_[0]});
}
# chosen SSE instructions
sub ::movq
{ my($p1,$p2,$optimize)=@_;
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);
}
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";
}
{ my($size,$addr,$reg1,$reg2,$idx)=@_;
my($post,$ret);
if ($addr =~ /^.+\-.+$/) { $addr="($addr)"; }
if ($size ne "")
{ $ret .= "$size";
$ret .= " PTR" if ($::mwerks);
$ret .= " ";
}
$ret .= "[";
$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);
}
$addr =~ s/^\s+//;
# prepend global references with optional underscore
$addr =~ s/^([^\+\-0-9][^\+\-]*)/islabel($1) or "$under$1"/ige;
# put address arithmetic expression in parenthesis
$addr="($addr)" if ($addr =~ /^.+[\-\+].+$/);
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",@_); }
if (($addr ne "") && ($addr ne 0))
{ if ($addr !~ /^-/) { $ret .= "$addr+"; }
else { $post=$addr; }
}
# 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 $near",@_); }
if ($reg2 ne "")
{ $idx!=0 or $idx=1;
$ret .= "$reg2*$idx";
$ret .= "+$reg1" if ($reg1 ne "");
}
else
{ $ret .= "$reg1"; }
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'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("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"); }
$ret .= "$post]";
$ret =~ s/\+\]/]/; # in case $addr was the only argument
# 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",@_); }
$ret;
}
sub ::BP { &get_mem("BYTE",@_); }
sub ::DWP { &get_mem("DWORD",@_); }
sub ::QWP { &get_mem("",@_); }
sub ::BC { (($::mwerks)?"":"BYTE ")."@_"; }
sub ::DWC { (($::mwerks)?"":"DWORD ")."@_"; }
sub out2
{
my($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 {
local $tmp=<<___;
sub ::file
{ if ($::mwerks) { push(@out,".section\t.text\n"); }
else
{ my $tmp=<<___;
%ifdef __omf__
section code use32 class=code
section code use32 class=code align=64
%else
section .text
section .text code align=64
%endif
___
push(@out,$tmp);
}
}
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
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'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_byte
{
push(@out,(($main'mwerks)?".byte\t":"DB\t").join(',',@_)."\n");
}
sub main'data_word
{
push(@out,(($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\$XCU data
extern $under$f
DD $under$f
sub ::function_begin_B
{ my $func=$under.shift;
my $tmp=<<___;
global $func
align 16
$func:
___
push(@out,$tmp);
}
}
push(@out,$tmp);
$::stack=4;
}
sub ::function_end_B
{ my $i;
foreach $i (%label) { undef $label{$i} if ($label{$i} =~ /^$prfx/); }
$::stack=0;
}
sub ::file_end
{ # try to detect if SSE2 or MMX extensions were used on Win32...
if ($::win32 && grep {/\s+[x]*mm[0-7]/i} @out)
{ # One can argue that it's wasteful to craft every
# SSE/MMX module with this snippet... Well, it's 72
# bytes long and for the moment we have two modules.
# Let's argue when we have 7 modules or so...
#
# $1<<10 sets a reserved bit to signal that variable
# was initialized already...
my $tmp=<<___;
align 16
${lprfx}OPENSSL_ia32cap_init:
lea edx,[${under}OPENSSL_ia32cap_P]
cmp DWORD [edx],0
jne NEAR ${lprfx}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 ${lprfx}nocpuid
push edi
push ebx
mov edi,edx
mov eax,1
cpuid
or edx,1<<10
mov DWORD [edi],edx
pop ebx
pop edi
${lprfx}nocpuid:
ret
segment .CRT\$XCU data align=4
dd ${lprfx}OPENSSL_ia32cap_init
segment .bss
common ${under}OPENSSL_ia32cap_P 4
___
# comment out OPENSSL_ia32cap_P declarations
grep {s/(^extern\s+${under}OPENSSL_ia32cap_P)/\;$1/} @out;
push (@out,$tmp);
}
}
sub ::comment { foreach (@_) { push(@out,"\t; $_\n"); } }
sub islabel # see is argument is known label
{ my $i;
foreach $i (%label) { return $label{$i} if ($label{$i} eq $_[0]); }
undef;
}
sub ::external_label
{ push(@labels,@_);
foreach (@_)
{ push(@out,".") if ($::mwerks);
push(@out, "extern\t${under}$_\n");
}
}
sub ::public_label
{ $label{$_[0]}="${under}${_[0]}" if (!defined($label{$_[0]}));
push(@out,"global\t$label{$_[0]}\n");
}
sub ::label
{ if (!defined($label{$_[0]}))
{ $label{$_[0]}="${lprfx}${label}${_[0]}"; $label++; }
$label{$_[0]};
}
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,".") if ($::mwerks); push(@out,"align\t$_[0]\n"); }
sub ::picmeup
{ my($dst,$sym)=@_;
&::lea($dst,&::DWP($sym));
}
sub ::initseg
{ my($f)=$under.shift;
if ($::win32)
{ my($tmp)=<<___;
segment .CRT\$XCU rdata align=4
extern $f
dd $f
___
push(@out,$tmp);
}
}
1;

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