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-z][_a-z0-9]*$/i)
  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'sbb    { &out2("sbb",@_); }
 137 sub main'rotl   { &out2("rol",@_); }
 138 sub main'rotr   { &out2("ror",@_); }
 139 sub main'exch   { &out2("xchg",@_); }
 140 sub main'cmp    { &out2("cmp",@_); }
 141 sub main'lea    { &out2("lea",@_); }
 142 sub main'mul    { &out1("mul",@_); }
 143 sub main'div    { &out1("div",@_); }
 144 sub main'dec    { &out1("dec",@_); }
 145 sub main'inc    { &out1("inc",@_); }
 146 sub main'jmp    { &out1("jmp",@_); }
 147 sub main'jmp_ptr { &out1p("jmp",@_); }
 148 sub main'je     { &out1("je",@_); }
 149 sub main'jle    { &out1("jle",@_); }
 150 sub main'jz     { &out1("jz",@_); }
 151 sub main'jge    { &out1("jge",@_); }
 152 sub main'jl     { &out1("jl",@_); }
 153 sub main'ja     { &out1("ja",@_); }
 154 sub main'jae    { &out1("jae",@_); }
 155 sub main'jb     { &out1("jb",@_); }
 156 sub main'jbe    { &out1("jbe",@_); }
 157 sub main'jc     { &out1("jc",@_); }
 158 sub main'jnc    { &out1("jnc",@_); }
 159 sub main'jnz    { &out1("jnz",@_); }
 160 sub main'jne    { &out1("jne",@_); }
 161 sub main'jno    { &out1("jno",@_); }
 162 sub main'push   { &out1("push",@_); $stack+=4; }
 163 sub main'pop    { &out1("pop",@_); $stack-=4; }
 164 sub main'pushf  { &out0("pushfd"); $stack+=4; }
 165 sub main'popf   { &out0("popfd"); $stack-=4; }
 166 sub main'bswap  { &out1("bswap",@_); &using486(); }
 167 sub main'not    { &out1("not",@_); }
 168 sub main'call   { &out1("call",($_[0]=~/^\$L/?'':'_').$_[0]); }
 169 sub main'ret    { &out0("ret"); }
 170 sub main'nop    { &out0("nop"); }
 171 sub main'test   { &out2("test",@_); }
 172 sub main'bt     { &out2("bt",@_); }
 173 sub main'leave  { &out0("leave"); }
 174 sub main'cpuid  { &out0("DW\t0A20Fh"); }
 175 sub main'rdtsc  { &out0("DW\t0310Fh"); }
 176 sub main'halt   { &out0("hlt"); }
 177 sub main'movz   { &out2("movzx",@_); }
 178 sub main'neg    { &out1("neg",@_); }
 179
 180 # SSE2
 181 sub main'emms   { &out0("emms"); }
 182 sub main'movd   { &out2("movd",@_); }
 183 sub main'movq   { &out2("movq",@_); }
 184 sub main'movdqu { &out2("movdqu",@_); }
 185 sub main'movdqa { &out2("movdqa",@_); }
 186 sub main'movdq2q{ &out2("movdq2q",@_); }
 187 sub main'movq2dq{ &out2("movq2dq",@_); }
 188 sub main'paddq  { &out2("paddq",@_); }
 189 sub main'pmuludq{ &out2("pmuludq",@_); }
 190 sub main'psrlq  { &out2("psrlq",@_); }
 191 sub main'psllq  { &out2("psllq",@_); }
 192 sub main'pxor   { &out2("pxor",@_); }
 193 sub main'por    { &out2("por",@_); }
 194 sub main'pand   { &out2("pand",@_); }
 195
 196 sub out2
 197         {
 198         local($name,$p1,$p2)=@_;
 199         local($l,$t);
 200
 201         push(@out,"\t$name\t");
 202         $t=&conv($p1).",";
 203         $l=length($t);
 204         push(@out,$t);
 205         $l=4-($l+9)/8;
 206         push(@out,"\t" x $l);
 207         push(@out,&conv($p2));
 208         push(@out,"\n");
 209         }
 210
 211 sub out0
 212         {
 213         local($name)=@_;
 214
 215         push(@out,"\t$name\n");
 216         }
 217
 218 sub out1
 219         {
 220         local($name,$p1)=@_;
 221         local($l,$t);
 222
 223         push(@out,"\t$name\t".&conv($p1)."\n");
 224         }
 225
 226 sub conv
 227         {
 228         local($p)=@_;
 229
 230         $p =~ s/0x([0-9A-Fa-f]+)/0$1h/;
 231         return $p;
 232         }
 233
 234 sub using486
 235         {
 236         return if $using486;
 237         $using486++;
 238         grep(s/\.386/\.486/,@out);
 239         }
 240
 241 sub main'file
 242         {
 243         local($file)=@_;
 244
 245         local($tmp)=<<"EOF";
 246         TITLE   $file.asm
 247         .386
 248 .model FLAT
 249 EOF
 250         push(@out,$tmp);
 251         }
 252
 253 sub main'function_begin
 254         {
 255         local($func,$extra)=@_;
 256
 257         push(@labels,$func);
 258
 259         local($tmp)=<<"EOF";
 260 _TEXT\$ SEGMENT PARA
 261 PUBLIC  _$func
 262 $extra
 263 _$func PROC NEAR
 264         push    ebp
 265         push    ebx
 266         push    esi
 267         push    edi
 268 EOF
 269         push(@out,$tmp);
 270         $stack=20;
 271         }
 272
 273 sub main'function_begin_B
 274         {
 275         local($func,$extra)=@_;
 276
 277         local($tmp)=<<"EOF";
 278 _TEXT\$ SEGMENT PARA
 279 PUBLIC  _$func
 280 $extra
 281 _$func PROC NEAR
 282 EOF
 283         push(@out,$tmp);
 284         $stack=4;
 285         }
 286
 287 sub main'function_end
 288         {
 289         local($func)=@_;
 290
 291         local($tmp)=<<"EOF";
 292         pop     edi
 293         pop     esi
 294         pop     ebx
 295         pop     ebp
 296         ret
 297 _$func ENDP
 298 _TEXT\$ ENDS
 299 EOF
 300         push(@out,$tmp);
 301         $stack=0;
 302         %label=();
 303         }
 304
 305 sub main'function_end_B
 306         {
 307         local($func)=@_;
 308
 309         local($tmp)=<<"EOF";
 310 _$func ENDP
 311 _TEXT\$ ENDS
 312 EOF
 313         push(@out,$tmp);
 314         $stack=0;
 315         %label=();
 316         }
 317
 318 sub main'function_end_A
 319         {
 320         local($func)=@_;
 321
 322         local($tmp)=<<"EOF";
 323         pop     edi
 324         pop     esi
 325         pop     ebx
 326         pop     ebp
 327         ret
 328 EOF
 329         push(@out,$tmp);
 330         }
 331
 332 sub main'file_end
 333         {
 334         # try to detect if SSE2 or MMX extensions were used...
 335         if (grep {/xmm[0-7]\s*,/i} @out) {
 336                 grep {s/\.[3-7]86/\.686\n\t\.XMM/} @out;
 337                 }
 338         elsif (grep {/mm[0-7]\s*,/i} @out) {
 339                 grep {s/\.[3-7]86/\.686\n\t\.MMX/} @out;
 340                 }
 341         push(@out,"END\n");
 342         }
 343
 344 sub main'wparam
 345         {
 346         local($num)=@_;
 347
 348         return(&main'DWP($stack+$num*4,"esp","",0));
 349         }
 350
 351 sub main'swtmp
 352         {
 353         return(&main'DWP($_[0]*4,"esp","",0));
 354         }
 355
 356 # Should use swtmp, which is above esp.  Linix can trash the stack above esp
 357 #sub main'wtmp
 358 #       {
 359 #       local($num)=@_;
 360 #
 361 #       return(&main'DWP(-(($num+1)*4),"esp","",0));
 362 #       }
 363
 364 sub main'comment
 365         {
 366         foreach (@_)
 367                 {
 368                 push(@out,"\t; $_\n");
 369                 }
 370         }
 371
 372 sub main'public_label
 373         {
 374         $label{$_[0]}="_$_[0]"  if (!defined($label{$_[0]}));
 375         push(@out,"PUBLIC\t$label{$_[0]}\n");
 376         }
 377
 378 sub main'label
 379         {
 380         if (!defined($label{$_[0]}))
 381                 {
 382                 $label{$_[0]}="\$${label}${_[0]}";
 383                 $label++;
 384                 }
 385         return($label{$_[0]});
 386         }
 387
 388 sub main'set_label
 389         {
 390         if (!defined($label{$_[0]}))
 391                 {
 392                 $label{$_[0]}="\$${label}${_[0]}";
 393                 $label++;
 394                 }
 395         if ($_[1]!=0 && $_[1]>1)
 396                 {
 397                 main'align($_[1]);
 398                 }
 399         if((defined $_[2]) && ($_[2] == 1))
 400                 {
 401                 push(@out,"$label{$_[0]}::\n");
 402                 }
 403         elsif ($label{$_[0]} !~ /^\$/)
 404                 {
 405                 push(@out,"$label{$_[0]}\tLABEL PTR\n");
 406                 }
 407         else
 408                 {
 409                 push(@out,"$label{$_[0]}:\n");
 410                 }
 411         }
 412
 413 sub main'data_word
 414         {
 415         push(@out,"\tDD\t".join(',',@_)."\n");
 416         }
 417
 418 sub main'align
 419         {
 420         push(@out,"\tALIGN\t$_[0]\n");
 421         }
 422
 423 sub out1p
 424         {
 425         local($name,$p1)=@_;
 426         local($l,$t);
 427
 428         push(@out,"\t$name\t ".&conv($p1)."\n");
 429         }
 430
 431 sub main'picmeup
 432         {
 433         local($dst,$sym)=@_;
 434         &main'lea($dst,&main'DWP($sym));
 435         }
 436
 437 sub main'blindpop { &out1("pop",@_); }
 438
 439 sub main'initseg
 440         {
 441         local($f)=@_;
 442         local($tmp)=<<___;
 443 OPTION  DOTNAME
 444 .CRT\$XIU       SEGMENT DWORD PUBLIC 'DATA'
 445 EXTRN   _$f:NEAR
 446 DD      _$f
 447 .CRT\$XIU       ENDS
 448 ___
 449         push(@out,$tmp);
 450         }
 451
 452 1;