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",@_); $stack-=4; }
 163 sub main'bswap  { &out1("bswap",@_); &using486(); }
 164 sub main'not    { &out1("not",@_); }
 165 sub main'call   { &out1("call",($_[0]=~/^\$L/?'':'_').$_[0]); }
 166 sub main'ret    { &out0("ret"); }
 167 sub main'nop    { &out0("nop"); }
 168 sub main'test   { &out2("test",@_); }
 169 sub main'bt     { &out2("bt",@_); }
 170 sub main'leave  { &out0("leave"); }
 171
 172 # SSE2
 173 sub main'emms   { &out0("emms"); }
 174 sub main'movd   { &out2("movd",@_); }
 175 sub main'movq   { &out2("movq",@_); }
 176 sub main'movdqu { &out2("movdqu",@_); }
 177 sub main'movdqa { &out2("movdqa",@_); }
 178 sub main'movdq2q{ &out2("movdq2q",@_); }
 179 sub main'movq2dq{ &out2("movq2dq",@_); }
 180 sub main'paddq  { &out2("paddq",@_); }
 181 sub main'pmuludq{ &out2("pmuludq",@_); }
 182 sub main'psrlq  { &out2("psrlq",@_); }
 183 sub main'psllq  { &out2("psllq",@_); }
 184 sub main'pxor   { &out2("pxor",@_); }
 185 sub main'por    { &out2("por",@_); }
 186 sub main'pand   { &out2("pand",@_); }
 187
 188 sub out2
 189         {
 190         local($name,$p1,$p2)=@_;
 191         local($l,$t);
 192
 193         push(@out,"\t$name\t");
 194         $t=&conv($p1).",";
 195         $l=length($t);
 196         push(@out,$t);
 197         $l=4-($l+9)/8;
 198         push(@out,"\t" x $l);
 199         push(@out,&conv($p2));
 200         push(@out,"\n");
 201         }
 202
 203 sub out0
 204         {
 205         local($name)=@_;
 206
 207         push(@out,"\t$name\n");
 208         }
 209
 210 sub out1
 211         {
 212         local($name,$p1)=@_;
 213         local($l,$t);
 214
 215         push(@out,"\t$name\t".&conv($p1)."\n");
 216         }
 217
 218 sub conv
 219         {
 220         local($p)=@_;
 221
 222         $p =~ s/0x([0-9A-Fa-f]+)/0$1h/;
 223         return $p;
 224         }
 225
 226 sub using486
 227         {
 228         return if $using486;
 229         $using486++;
 230         grep(s/\.386/\.486/,@out);
 231         }
 232
 233 sub main'file
 234         {
 235         local($file)=@_;
 236
 237         local($tmp)=<<"EOF";
 238         TITLE   $file.asm
 239         .386
 240 .model FLAT
 241 EOF
 242         push(@out,$tmp);
 243         }
 244
 245 sub main'function_begin
 246         {
 247         local($func,$extra)=@_;
 248
 249         push(@labels,$func);
 250
 251         local($tmp)=<<"EOF";
 252 _TEXT   SEGMENT
 253 PUBLIC  _$func
 254 $extra
 255 _$func PROC NEAR
 256         push    ebp
 257         push    ebx
 258         push    esi
 259         push    edi
 260 EOF
 261         push(@out,$tmp);
 262         $stack=20;
 263         }
 264
 265 sub main'function_begin_B
 266         {
 267         local($func,$extra)=@_;
 268
 269         local($tmp)=<<"EOF";
 270 _TEXT   SEGMENT
 271 PUBLIC  _$func
 272 $extra
 273 _$func PROC NEAR
 274 EOF
 275         push(@out,$tmp);
 276         $stack=4;
 277         }
 278
 279 sub main'function_end
 280         {
 281         local($func)=@_;
 282
 283         local($tmp)=<<"EOF";
 284         pop     edi
 285         pop     esi
 286         pop     ebx
 287         pop     ebp
 288         ret
 289 _$func ENDP
 290 _TEXT   ENDS
 291 EOF
 292         push(@out,$tmp);
 293         $stack=0;
 294         %label=();
 295         }
 296
 297 sub main'function_end_B
 298         {
 299         local($func)=@_;
 300
 301         local($tmp)=<<"EOF";
 302 _$func ENDP
 303 _TEXT   ENDS
 304 EOF
 305         push(@out,$tmp);
 306         $stack=0;
 307         %label=();
 308         }
 309
 310 sub main'function_end_A
 311         {
 312         local($func)=@_;
 313
 314         local($tmp)=<<"EOF";
 315         pop     edi
 316         pop     esi
 317         pop     ebx
 318         pop     ebp
 319         ret
 320 EOF
 321         push(@out,$tmp);
 322         }
 323
 324 sub main'file_end
 325         {
 326         # try to detect if SSE2 or MMX extensions were used...
 327         if (grep {/xmm[0-7]\s*,/i} @out) {
 328                 grep {s/\.[3-7]86/\.786\n\t\.XMM/} @out;
 329                 }
 330         elsif (grep {/mm[0-7]\s*,/i} @out) {
 331                 grep {s/\.[3-7]86/\.686\n\t\.MMX/} @out;
 332                 }
 333         push(@out,"END\n");
 334         }
 335
 336 sub main'wparam
 337         {
 338         local($num)=@_;
 339
 340         return(&main'DWP($stack+$num*4,"esp","",0));
 341         }
 342
 343 sub main'swtmp
 344         {
 345         return(&main'DWP($_[0]*4,"esp","",0));
 346         }
 347
 348 # Should use swtmp, which is above esp.  Linix can trash the stack above esp
 349 #sub main'wtmp
 350 #       {
 351 #       local($num)=@_;
 352 #
 353 #       return(&main'DWP(-(($num+1)*4),"esp","",0));
 354 #       }
 355
 356 sub main'comment
 357         {
 358         foreach (@_)
 359                 {
 360                 push(@out,"\t; $_\n");
 361                 }
 362         }
 363
 364 sub main'label
 365         {
 366         if (!defined($label{$_[0]}))
 367                 {
 368                 $label{$_[0]}="\$${label}${_[0]}";
 369                 $label++;
 370                 }
 371         return($label{$_[0]});
 372         }
 373
 374 sub main'set_label
 375         {
 376         if (!defined($label{$_[0]}))
 377                 {
 378                 $label{$_[0]}="\$${label}${_[0]}";
 379                 $label++;
 380                 }
 381         if((defined $_[2]) && ($_[2] == 1))
 382                 {
 383                 push(@out,"$label{$_[0]}::\n");
 384                 }
 385         else
 386                 {
 387                 push(@out,"$label{$_[0]}:\n");
 388                 }
 389         }
 390
 391 sub main'data_word
 392         {
 393         push(@out,"\tDD\t".join(',',@_)."\n");
 394         }
 395
 396 sub main'align
 397         {
 398         push(@out,"\tALIGN\t$_[0]\n");
 399         }
 400
 401 sub out1p
 402         {
 403         local($name,$p1)=@_;
 404         local($l,$t);
 405
 406         push(@out,"\t$name\t ".&conv($p1)."\n");
 407         }
 408
 409 sub main'picmeup
 410         {
 411         local($dst,$sym)=@_;
 412         &main'lea($dst,&main'DWP($sym));
 413         }
 414
 415 sub main'blindpop { &out1("pop",@_); }