crypto/perlasm/x86ms.pl

   1 #!/usr/local/bin/perl
   2
   3 package x86ms;
   4
   5 $label="L000";
   6
   7 %lb=(   'eax',  'al',
   8         'ebx',  'bl',
   9         'ecx',  'cl',
  10         'edx',  'dl',
  11         'ax',   'al',
  12         'bx',   'bl',
  13         'cx',   'cl',
  14         'dx',   'dl',
  15         );
  16
  17 %hb=(   'eax',  'ah',
  18         'ebx',  'bh',
  19         'ecx',  'ch',
  20         'edx',  'dh',
  21         'ax',   'ah',
  22         'bx',   'bh',
  23         'cx',   'ch',
  24         'dx',   'dh',
  25         );
  26
  27 sub main'asm_init_output { @out=(); }
  28 sub main'asm_get_output { return(@out); }
  29 sub main'get_labels { return(@labels); }
  30 sub main'external_label { push(@labels,@_); }
  31
  32 sub main'LB
  33         {
  34         (defined($lb{$_[0]})) || die "$_[0] does not have a 'low byte'\n";
  35         return($lb{$_[0]});
  36         }
  37
  38 sub main'HB
  39         {
  40         (defined($hb{$_[0]})) || die "$_[0] does not have a 'high byte'\n";
  41         return($hb{$_[0]});
  42         }
  43
  44 sub main'BP
  45         {
  46         &get_mem("BYTE",@_);
  47         }
  48
  49 sub main'DWP
  50         {
  51         &get_mem("DWORD",@_);
  52         }
  53
  54 sub main'QWP
  55         {
  56         &get_mem("QWORD",@_);
  57         }
  58
  59 sub main'BC
  60         {
  61         return @_;
  62         }
  63
  64 sub main'DWC
  65         {
  66         return @_;
  67         }
  68
  69 sub main'stack_push
  70         {
  71         local($num)=@_;
  72         $stack+=$num*4;
  73         &main'sub("esp",$num*4);
  74         }
  75
  76 sub main'stack_pop
  77         {
  78         local($num)=@_;
  79         $stack-=$num*4;
  80         &main'add("esp",$num*4);
  81         }
  82
  83 sub get_mem
  84         {
  85         local($size,$addr,$reg1,$reg2,$idx)=@_;
  86         local($t,$post);
  87         local($ret)="$size PTR ";
  88
  89         $addr =~ s/^\s+//;
  90         if ($addr =~ /^(.+)\+(.+)$/)
  91                 {
  92                 $reg2=&conv($1);
  93                 $addr="_$2";
  94                 }
  95         elsif ($addr =~ /^[_a-zA-Z]/)
  96                 {
  97                 $addr="_$addr";
  98                 }
  99
 100         if ($addr =~ /^.+\-.+$/) { $addr="($addr)"; }
 101
 102         $reg1="$regs{$reg1}" if defined($regs{$reg1});
 103         $reg2="$regs{$reg2}" if defined($regs{$reg2});
 104         if (($addr ne "") && ($addr ne 0))
 105                 {
 106                 if ($addr !~ /^-/)
 107                         { $ret.=$addr; }
 108                 else    { $post=$addr; }
 109                 }
 110         if ($reg2 ne "")
 111                 {
 112                 $t="";
 113                 $t="*$idx" if ($idx != 0);
 114                 $reg1="+".$reg1 if ("$reg1$post" ne "");
 115                 $ret.="[$reg2$t$reg1$post]";
 116                 }
 117         else
 118                 {
 119                 $ret.="[$reg1$post]"
 120                 }
 121         $ret =~ s/\[\]//;       # in case $addr was the only argument
 122         return($ret);
 123         }
 124
 125 sub main'mov    { &out2("mov",@_); }
 126 sub main'movb   { &out2("mov",@_); }
 127 sub main'and    { &out2("and",@_); }
 128 sub main'or     { &out2("or",@_); }
 129 sub main'shl    { &out2("shl",@_); }
 130 sub main'shr    { &out2("shr",@_); }
 131 sub main'xor    { &out2("xor",@_); }
 132 sub main'xorb   { &out2("xor",@_); }
 133 sub main'add    { &out2("add",@_); }
 134 sub main'adc    { &out2("adc",@_); }
 135 sub main'sub    { &out2("sub",@_); }
 136 sub main'rotl   { &out2("rol",@_); }
 137 sub main'rotr   { &out2("ror",@_); }
 138 sub main'exch   { &out2("xchg",@_); }
 139 sub main'cmp    { &out2("cmp",@_); }
 140 sub main'lea    { &out2("lea",@_); }
 141 sub main'mul    { &out1("mul",@_); }
 142 sub main'div    { &out1("div",@_); }
 143 sub main'dec    { &out1("dec",@_); }
 144 sub main'inc    { &out1("inc",@_); }
 145 sub main'jmp    { &out1("jmp",@_); }
 146 sub main'jmp_ptr { &out1p("jmp",@_); }
 147 sub main'je     { &out1("je",@_); }
 148 sub main'jle    { &out1("jle",@_); }
 149 sub main'jz     { &out1("jz",@_); }
 150 sub main'jge    { &out1("jge",@_); }
 151 sub main'jl     { &out1("jl",@_); }
 152 sub main'ja     { &out1("ja",@_); }
 153 sub main'jae    { &out1("jae",@_); }
 154 sub main'jb     { &out1("jb",@_); }
 155 sub main'jbe    { &out1("jbe",@_); }
 156 sub main'jc     { &out1("jc",@_); }
 157 sub main'jnc    { &out1("jnc",@_); }
 158 sub main'jnz    { &out1("jnz",@_); }
 159 sub main'jne    { &out1("jne",@_); }
 160 sub main'jno    { &out1("jno",@_); }
 161 sub main'push   { &out1("push",@_); $stack+=4; }
 162 sub main'pop    { &out1("pop",@_); $stack-=4; }
 163 sub main'pushf  { &out0("pushf"); $stack+=4; }
 164 sub main'popf   { &out0("popf"); $stack-=4; }
 165 sub main'bswap  { &out1("bswap",@_); &using486(); }
 166 sub main'not    { &out1("not",@_); }
 167 sub main'call   { &out1("call",($_[0]=~/^\$L/?'':'_').$_[0]); }
 168 sub main'ret    { &out0("ret"); }
 169 sub main'nop    { &out0("nop"); }
 170 sub main'test   { &out2("test",@_); }
 171 sub main'bt     { &out2("bt",@_); }
 172 sub main'leave  { &out0("leave"); }
 173 sub main'cpuid  { &out0("DW\t0A20Fh"); }
 174 sub main'rdtsc  { &out0("DW\t0310Fh"); }
 175
 176 # SSE2
 177 sub main'emms   { &out0("emms"); }
 178 sub main'movd   { &out2("movd",@_); }
 179 sub main'movq   { &out2("movq",@_); }
 180 sub main'movdqu { &out2("movdqu",@_); }
 181 sub main'movdqa { &out2("movdqa",@_); }
 182 sub main'movdq2q{ &out2("movdq2q",@_); }
 183 sub main'movq2dq{ &out2("movq2dq",@_); }
 184 sub main'paddq  { &out2("paddq",@_); }
 185 sub main'pmuludq{ &out2("pmuludq",@_); }
 186 sub main'psrlq  { &out2("psrlq",@_); }
 187 sub main'psllq  { &out2("psllq",@_); }
 188 sub main'pxor   { &out2("pxor",@_); }
 189 sub main'por    { &out2("por",@_); }
 190 sub main'pand   { &out2("pand",@_); }
 191
 192 sub out2
 193         {
 194         local($name,$p1,$p2)=@_;
 195         local($l,$t);
 196
 197         push(@out,"\t$name\t");
 198         $t=&conv($p1).",";
 199         $l=length($t);
 200         push(@out,$t);
 201         $l=4-($l+9)/8;
 202         push(@out,"\t" x $l);
 203         push(@out,&conv($p2));
 204         push(@out,"\n");
 205         }
 206
 207 sub out0
 208         {
 209         local($name)=@_;
 210
 211         push(@out,"\t$name\n");
 212         }
 213
 214 sub out1
 215         {
 216         local($name,$p1)=@_;
 217         local($l,$t);
 218
 219         push(@out,"\t$name\t".&conv($p1)."\n");
 220         }
 221
 222 sub conv
 223         {
 224         local($p)=@_;
 225
 226         $p =~ s/0x([0-9A-Fa-f]+)/0$1h/;
 227         return $p;
 228         }
 229
 230 sub using486
 231         {
 232         return if $using486;
 233         $using486++;
 234         grep(s/\.386/\.486/,@out);
 235         }
 236
 237 sub main'file
 238         {
 239         local($file)=@_;
 240
 241         local($tmp)=<<"EOF";
 242         TITLE   $file.asm
 243         .386
 244 .model FLAT
 245 EOF
 246         push(@out,$tmp);
 247         }
 248
 249 sub main'function_begin
 250         {
 251         local($func,$extra)=@_;
 252
 253         push(@labels,$func);
 254
 255         local($tmp)=<<"EOF";
 256 _TEXT   SEGMENT
 257 PUBLIC  _$func
 258 $extra
 259 _$func PROC NEAR
 260         push    ebp
 261         push    ebx
 262         push    esi
 263         push    edi
 264 EOF
 265         push(@out,$tmp);
 266         $stack=20;
 267         }
 268
 269 sub main'function_begin_B
 270         {
 271         local($func,$extra)=@_;
 272
 273         local($tmp)=<<"EOF";
 274 _TEXT   SEGMENT
 275 PUBLIC  _$func
 276 $extra
 277 _$func PROC NEAR
 278 EOF
 279         push(@out,$tmp);
 280         $stack=4;
 281         }
 282
 283 sub main'function_end
 284         {
 285         local($func)=@_;
 286
 287         local($tmp)=<<"EOF";
 288         pop     edi
 289         pop     esi
 290         pop     ebx
 291         pop     ebp
 292         ret
 293 _$func ENDP
 294 _TEXT   ENDS
 295 EOF
 296         push(@out,$tmp);
 297         $stack=0;
 298         %label=();
 299         }
 300
 301 sub main'function_end_B
 302         {
 303         local($func)=@_;
 304
 305         local($tmp)=<<"EOF";
 306 _$func ENDP
 307 _TEXT   ENDS
 308 EOF
 309         push(@out,$tmp);
 310         $stack=0;
 311         %label=();
 312         }
 313
 314 sub main'function_end_A
 315         {
 316         local($func)=@_;
 317
 318         local($tmp)=<<"EOF";
 319         pop     edi
 320         pop     esi
 321         pop     ebx
 322         pop     ebp
 323         ret
 324 EOF
 325         push(@out,$tmp);
 326         }
 327
 328 sub main'file_end
 329         {
 330         # try to detect if SSE2 or MMX extensions were used...
 331         if (grep {/xmm[0-7]\s*,/i} @out) {
 332                 grep {s/\.[3-7]86/\.686\n\t\.XMM/} @out;
 333                 }
 334         elsif (grep {/mm[0-7]\s*,/i} @out) {
 335                 grep {s/\.[3-7]86/\.686\n\t\.MMX/} @out;
 336                 }
 337         push(@out,"END\n");
 338         }
 339
 340 sub main'wparam
 341         {
 342         local($num)=@_;
 343
 344         return(&main'DWP($stack+$num*4,"esp","",0));
 345         }
 346
 347 sub main'swtmp
 348         {
 349         return(&main'DWP($_[0]*4,"esp","",0));
 350         }
 351
 352 # Should use swtmp, which is above esp.  Linix can trash the stack above esp
 353 #sub main'wtmp
 354 #       {
 355 #       local($num)=@_;
 356 #
 357 #       return(&main'DWP(-(($num+1)*4),"esp","",0));
 358 #       }
 359
 360 sub main'comment
 361         {
 362         foreach (@_)
 363                 {
 364                 push(@out,"\t; $_\n");
 365                 }
 366         }
 367
 368 sub main'label
 369         {
 370         if (!defined($label{$_[0]}))
 371                 {
 372                 $label{$_[0]}="\$${label}${_[0]}";
 373                 $label++;
 374                 }
 375         return($label{$_[0]});
 376         }
 377
 378 sub main'set_label
 379         {
 380         if (!defined($label{$_[0]}))
 381                 {
 382                 $label{$_[0]}="\$${label}${_[0]}";
 383                 $label++;
 384                 }
 385         if((defined $_[2]) && ($_[2] == 1))
 386                 {
 387                 push(@out,"$label{$_[0]}::\n");
 388                 }
 389         else
 390                 {
 391                 push(@out,"$label{$_[0]}:\n");
 392                 }
 393         }
 394
 395 sub main'data_word
 396         {
 397         push(@out,"\tDD\t".join(',',@_)."\n");
 398         }
 399
 400 sub main'align
 401         {
 402         push(@out,"\tALIGN\t$_[0]\n");
 403         }
 404
 405 sub out1p
 406         {
 407         local($name,$p1)=@_;
 408         local($l,$t);
 409
 410         push(@out,"\t$name\t ".&conv($p1)."\n");
 411         }
 412
 413 sub main'picmeup
 414         {
 415         local($dst,$sym)=@_;
 416         &main'lea($dst,&main'DWP($sym));
 417         }
 418
 419 sub main'blindpop { &out1("pop",@_); }
 420
 421 sub main'initseg
 422         {
 423         local($f)=@_;
 424         local($tmp)=<<___;
 425 OPTION  DOTNAME
 426 .CRT\$XIU       SEGMENT DWORD PUBLIC 'DATA'
 427 EXTRN   _$f:NEAR
 428 DD      _$f
 429 .CRT\$XIU       ENDS
 430 ___
 431         push(@out,$tmp);
 432         }
 433
 434 1;