crypto/perlasm/x86unix.pl

   1 #!/usr/local/bin/perl
   2
   3 package x86unix;
   4
   5 $label="L000";
   6 $const="";
   7 $constl=0;
   8
   9 $align=($main'aout)?"4":"16";
  10 $under=($main'aout)?"_":"";
  11 $com_start=($main'sol)?"/":"#";
  12
  13 sub main'asm_init_output { @out=(); }
  14 sub main'asm_get_output { return(@out); }
  15 sub main'get_labels { return(@labels); }
  16 sub main'external_label { push(@labels,@_); }
  17
  18 if ($main'cpp)
  19         {
  20         $align="ALIGN";
  21         $under="";
  22         $com_start='/*';
  23         $com_end='*/';
  24         }
  25
  26 %lb=(   'eax',  '%al',
  27         'ebx',  '%bl',
  28         'ecx',  '%cl',
  29         'edx',  '%dl',
  30         'ax',   '%al',
  31         'bx',   '%bl',
  32         'cx',   '%cl',
  33         'dx',   '%dl',
  34         );
  35
  36 %hb=(   'eax',  '%ah',
  37         'ebx',  '%bh',
  38         'ecx',  '%ch',
  39         'edx',  '%dh',
  40         'ax',   '%ah',
  41         'bx',   '%bh',
  42         'cx',   '%ch',
  43         'dx',   '%dh',
  44         );
  45
  46 %regs=( 'eax',  '%eax',
  47         'ebx',  '%ebx',
  48         'ecx',  '%ecx',
  49         'edx',  '%edx',
  50         'esi',  '%esi',
  51         'edi',  '%edi',
  52         'ebp',  '%ebp',
  53         'esp',  '%esp',
  54
  55         'mm0',  '%mm0',
  56         'mm1',  '%mm1',
  57         'mm2',  '%mm2',
  58         'mm3',  '%mm3',
  59         'mm4',  '%mm4',
  60         'mm5',  '%mm5',
  61         'mm6',  '%mm6',
  62         'mm7',  '%mm7',
  63
  64         'xmm0', '%xmm0',
  65         'xmm1', '%xmm1',
  66         'xmm2', '%xmm2',
  67         'xmm3', '%xmm3',
  68         'xmm4', '%xmm4',
  69         'xmm5', '%xmm5',
  70         'xmm6', '%xmm6',
  71         'xmm7', '%xmm7',
  72         );
  73
  74 %reg_val=(
  75         'eax',  0x00,
  76         'ebx',  0x03,
  77         'ecx',  0x01,
  78         'edx',  0x02,
  79         'esi',  0x06,
  80         'edi',  0x07,
  81         'ebp',  0x05,
  82         'esp',  0x04,
  83         );
  84
  85 sub main'LB
  86         {
  87         (defined($lb{$_[0]})) || die "$_[0] does not have a 'low byte'\n";
  88         return($lb{$_[0]});
  89         }
  90
  91 sub main'HB
  92         {
  93         (defined($hb{$_[0]})) || die "$_[0] does not have a 'high byte'\n";
  94         return($hb{$_[0]});
  95         }
  96
  97 sub main'DWP
  98         {
  99         local($addr,$reg1,$reg2,$idx)=@_;
 100
 101         $ret="";
 102         $addr =~ s/(^|[+ \t])([A-Za-z_]+[A-Za-z0-9_]+)($|[+ \t])/$1$under$2$3/;
 103         $reg1="$regs{$reg1}" if defined($regs{$reg1});
 104         $reg2="$regs{$reg2}" if defined($regs{$reg2});
 105         $ret.=$addr if ($addr ne "") && ($addr ne 0);
 106         if ($reg2 ne "")
 107                 {
 108                 if($idx ne "" && $idx != 0)
 109                     { $ret.="($reg1,$reg2,$idx)"; }
 110                 else
 111                     { $ret.="($reg1,$reg2)"; }
 112                 }
 113         elsif ($reg1 ne "")
 114                 { $ret.="($reg1)" }
 115         return($ret);
 116         }
 117
 118 sub main'QWP
 119         {
 120         return(&main'DWP(@_));
 121         }
 122
 123 sub main'BP
 124         {
 125         return(&main'DWP(@_));
 126         }
 127
 128 sub main'BC
 129         {
 130         return @_;
 131         }
 132
 133 sub main'DWC
 134         {
 135         return @_;
 136         }
 137
 138 #sub main'BP
 139 #       {
 140 #       local($addr,$reg1,$reg2,$idx)=@_;
 141 #
 142 #       $ret="";
 143 #
 144 #       $addr =~ s/(^|[+ \t])([A-Za-z_]+)($|[+ \t])/$1$under$2$3/;
 145 #       $reg1="$regs{$reg1}" if defined($regs{$reg1});
 146 #       $reg2="$regs{$reg2}" if defined($regs{$reg2});
 147 #       $ret.=$addr if ($addr ne "") && ($addr ne 0);
 148 #       if ($reg2 ne "")
 149 #               { $ret.="($reg1,$reg2,$idx)"; }
 150 #       else
 151 #               { $ret.="($reg1)" }
 152 #       return($ret);
 153 #       }
 154
 155 sub main'mov    { &out2("movl",@_); }
 156 sub main'movb   { &out2("movb",@_); }
 157 sub main'and    { &out2("andl",@_); }
 158 sub main'or     { &out2("orl",@_); }
 159 sub main'shl    { &out2("sall",@_); }
 160 sub main'shr    { &out2("shrl",@_); }
 161 sub main'xor    { &out2("xorl",@_); }
 162 sub main'xorb   { &out2("xorb",@_); }
 163 sub main'add    { &out2("addl",@_); }
 164 sub main'adc    { &out2("adcl",@_); }
 165 sub main'sub    { &out2("subl",@_); }
 166 sub main'rotl   { &out2("roll",@_); }
 167 sub main'rotr   { &out2("rorl",@_); }
 168 sub main'exch   { &out2("xchg",@_); }
 169 sub main'cmp    { &out2("cmpl",@_); }
 170 sub main'lea    { &out2("leal",@_); }
 171 sub main'mul    { &out1("mull",@_); }
 172 sub main'div    { &out1("divl",@_); }
 173 sub main'jmp    { &out1("jmp",@_); }
 174 sub main'jmp_ptr { &out1p("jmp",@_); }
 175 sub main'je     { &out1("je",@_); }
 176 sub main'jle    { &out1("jle",@_); }
 177 sub main'jne    { &out1("jne",@_); }
 178 sub main'jnz    { &out1("jnz",@_); }
 179 sub main'jz     { &out1("jz",@_); }
 180 sub main'jge    { &out1("jge",@_); }
 181 sub main'jl     { &out1("jl",@_); }
 182 sub main'ja     { &out1("ja",@_); }
 183 sub main'jae    { &out1("jae",@_); }
 184 sub main'jb     { &out1("jb",@_); }
 185 sub main'jbe    { &out1("jbe",@_); }
 186 sub main'jc     { &out1("jc",@_); }
 187 sub main'jnc    { &out1("jnc",@_); }
 188 sub main'jno    { &out1("jno",@_); }
 189 sub main'dec    { &out1("decl",@_); }
 190 sub main'inc    { &out1("incl",@_); }
 191 sub main'push   { &out1("pushl",@_); $stack+=4; }
 192 sub main'pop    { &out1("popl",@_); $stack-=4; }
 193 sub main'pushf  { &out0("pushf"); $stack+=4; }
 194 sub main'popf   { &out0("popf"); $stack-=4; }
 195 sub main'not    { &out1("notl",@_); }
 196 sub main'call   { &out1("call",($_[0]=~/^\.L/?'':$under).$_[0]); }
 197 sub main'ret    { &out0("ret"); }
 198 sub main'nop    { &out0("nop"); }
 199 sub main'test   { &out2("testl",@_); }
 200 sub main'bt     { &out2("btl",@_); }
 201 sub main'leave  { &out0("leave"); }
 202
 203 # SSE2
 204 sub main'emms   { &out0("emms"); }
 205 sub main'movd   { &out2("movd",@_); }
 206 sub main'movq   { &out2("movq",@_); }
 207 sub main'movdqu { &out2("movdqu",@_); }
 208 sub main'movdqa { &out2("movdqa",@_); }
 209 sub main'movdq2q{ &out2("movdq2q",@_); }
 210 sub main'movq2dq{ &out2("movq2dq",@_); }
 211 sub main'paddq  { &out2("paddq",@_); }
 212 sub main'pmuludq{ &out2("pmuludq",@_); }
 213 sub main'psrlq  { &out2("psrlq",@_); }
 214 sub main'psllq  { &out2("psllq",@_); }
 215 sub main'pxor   { &out2("pxor",@_); }
 216 sub main'por    { &out2("por",@_); }
 217 sub main'pand   { &out2("pand",@_); }
 218
 219 # The bswapl instruction is new for the 486. Emulate if i386.
 220 sub main'bswap
 221         {
 222         if ($main'i386)
 223                 {
 224                 &main'comment("bswapl @_");
 225                 &main'exch(main'HB(@_),main'LB(@_));
 226                 &main'rotr(@_,16);
 227                 &main'exch(main'HB(@_),main'LB(@_));
 228                 }
 229         else
 230                 {
 231                 &out1("bswapl",@_);
 232                 }
 233         }
 234
 235 sub out2
 236         {
 237         local($name,$p1,$p2)=@_;
 238         local($l,$ll,$t);
 239         local(%special)=(       "roll",0xD1C0,"rorl",0xD1C8,
 240                                 "rcll",0xD1D0,"rcrl",0xD1D8,
 241                                 "shll",0xD1E0,"shrl",0xD1E8,
 242                                 "sarl",0xD1F8);
 243
 244         if ((defined($special{$name})) && defined($regs{$p1}) && ($p2 == 1))
 245                 {
 246                 $op=$special{$name}|$reg_val{$p1};
 247                 $tmp1=sprintf(".byte %d\n",($op>>8)&0xff);
 248                 $tmp2=sprintf(".byte %d\t",$op     &0xff);
 249                 push(@out,$tmp1);
 250                 push(@out,$tmp2);
 251
 252                 $p2=&conv($p2);
 253                 $p1=&conv($p1);
 254                 &main'comment("$name $p2 $p1");
 255                 return;
 256                 }
 257
 258         push(@out,"\t$name\t");
 259         $t=&conv($p2).",";
 260         $l=length($t);
 261         push(@out,$t);
 262         $ll=4-($l+9)/8;
 263         $tmp1=sprintf("\t" x $ll);
 264         push(@out,$tmp1);
 265         push(@out,&conv($p1)."\n");
 266         }
 267
 268 sub out1
 269         {
 270         local($name,$p1)=@_;
 271         local($l,$t);
 272         local(%special)=("bswapl",0x0FC8);
 273
 274         if ((defined($special{$name})) && defined($regs{$p1}))
 275                 {
 276                 $op=$special{$name}|$reg_val{$p1};
 277                 $tmp1=sprintf(".byte %d\n",($op>>8)&0xff);
 278                 $tmp2=sprintf(".byte %d\t",$op     &0xff);
 279                 push(@out,$tmp1);
 280                 push(@out,$tmp2);
 281
 282                 $p2=&conv($p2);
 283                 $p1=&conv($p1);
 284                 &main'comment("$name $p2 $p1");
 285                 return;
 286                 }
 287
 288         push(@out,"\t$name\t".&conv($p1)."\n");
 289         }
 290
 291 sub out1p
 292         {
 293         local($name,$p1)=@_;
 294         local($l,$t);
 295
 296         push(@out,"\t$name\t*".&conv($p1)."\n");
 297         }
 298
 299 sub out0
 300         {
 301         push(@out,"\t$_[0]\n");
 302         }
 303
 304 sub conv
 305         {
 306         local($p)=@_;
 307
 308 #       $p =~ s/0x([0-9A-Fa-f]+)/0$1h/;
 309
 310         $p=$regs{$p} if (defined($regs{$p}));
 311
 312         $p =~ s/^(-{0,1}[0-9A-Fa-f]+)$/\$$1/;
 313         $p =~ s/^(0x[0-9A-Fa-f]+)$/\$$1/;
 314         return $p;
 315         }
 316
 317 sub main'file
 318         {
 319         local($file)=@_;
 320
 321         local($tmp)=<<"EOF";
 322         .file   "$file.s"
 323         .version        "01.01"
 324 gcc2_compiled.:
 325 EOF
 326         push(@out,$tmp);
 327         }
 328
 329 sub main'function_begin
 330         {
 331         local($func)=@_;
 332
 333         &main'external_label($func);
 334         $func=$under.$func;
 335
 336         local($tmp)=<<"EOF";
 337 .text
 338         .align $align
 339 .globl $func
 340 EOF
 341         push(@out,$tmp);
 342         if ($main'cpp)
 343                 { $tmp=push(@out,"\tTYPE($func,\@function)\n"); }
 344         elsif ($main'gaswin)
 345                 { $tmp=push(@out,"\t.def\t$func;\t.scl\t2;\t.type\t32;\t.endef\n"); }
 346         else    { $tmp=push(@out,"\t.type\t$func,\@function\n"); }
 347         push(@out,"$func:\n");
 348         $tmp=<<"EOF";
 349         pushl   %ebp
 350         pushl   %ebx
 351         pushl   %esi
 352         pushl   %edi
 353
 354 EOF
 355         push(@out,$tmp);
 356         $stack=20;
 357         }
 358
 359 sub main'function_begin_B
 360         {
 361         local($func,$extra)=@_;
 362
 363         &main'external_label($func);
 364         $func=$under.$func;
 365
 366         local($tmp)=<<"EOF";
 367 .text
 368         .align $align
 369 .globl $func
 370 EOF
 371         push(@out,$tmp);
 372         if ($main'cpp)
 373                 { push(@out,"\tTYPE($func,\@function)\n"); }
 374         elsif ($main'gaswin)
 375                 { $tmp=push(@out,"\t.def\t$func;\t.scl\t2;\t.type\t32;\t.endef\n"); }
 376         else    { push(@out,"\t.type    $func,\@function\n"); }
 377         push(@out,"$func:\n");
 378         $stack=4;
 379         }
 380
 381 sub main'function_end
 382         {
 383         local($func)=@_;
 384
 385         $func=$under.$func;
 386
 387         local($tmp)=<<"EOF";
 388         popl    %edi
 389         popl    %esi
 390         popl    %ebx
 391         popl    %ebp
 392         ret
 393 .L_${func}_end:
 394 EOF
 395         push(@out,$tmp);
 396
 397         if ($main'cpp)
 398                 { push(@out,"\tSIZE($func,.L_${func}_end-$func)\n"); }
 399         elsif ($main'gaswin)
 400                 { $tmp=push(@out,"\t.align 4\n"); }
 401         else    { push(@out,"\t.size\t$func,.L_${func}_end-$func\n"); }
 402         push(@out,".ident       \"$func\"\n");
 403         $stack=0;
 404         %label=();
 405         }
 406
 407 sub main'function_end_A
 408         {
 409         local($func)=@_;
 410
 411         local($tmp)=<<"EOF";
 412         popl    %edi
 413         popl    %esi
 414         popl    %ebx
 415         popl    %ebp
 416         ret
 417 EOF
 418         push(@out,$tmp);
 419         }
 420
 421 sub main'function_end_B
 422         {
 423         local($func)=@_;
 424
 425         $func=$under.$func;
 426
 427         push(@out,".L_${func}_end:\n");
 428         if ($main'cpp)
 429                 { push(@out,"\tSIZE($func,.L_${func}_end-$func)\n"); }
 430         elsif ($main'gaswin)
 431                 { push(@out,"\t.align 4\n"); }
 432         else    { push(@out,"\t.size\t$func,.L_${func}_end-$func\n"); }
 433         push(@out,".ident       \"$func\"\n");
 434         $stack=0;
 435         %label=();
 436         }
 437
 438 sub main'wparam
 439         {
 440         local($num)=@_;
 441
 442         return(&main'DWP($stack+$num*4,"esp","",0));
 443         }
 444
 445 sub main'stack_push
 446         {
 447         local($num)=@_;
 448         $stack+=$num*4;
 449         &main'sub("esp",$num*4);
 450         }
 451
 452 sub main'stack_pop
 453         {
 454         local($num)=@_;
 455         $stack-=$num*4;
 456         &main'add("esp",$num*4);
 457         }
 458
 459 sub main'swtmp
 460         {
 461         return(&main'DWP($_[0]*4,"esp","",0));
 462         }
 463
 464 # Should use swtmp, which is above esp.  Linix can trash the stack above esp
 465 #sub main'wtmp
 466 #       {
 467 #       local($num)=@_;
 468 #
 469 #       return(&main'DWP(-($num+1)*4,"esp","",0));
 470 #       }
 471
 472 sub main'comment
 473         {
 474         if ($main'elf)  # GNU and SVR4 as'es use different comment delimiters,
 475                 {       # so we just skip comments...
 476                 push(@out,"\n");
 477                 return;
 478                 }
 479         foreach (@_)
 480                 {
 481                 if (/^\s*$/)
 482                         { push(@out,"\n"); }
 483                 else
 484                         { push(@out,"\t$com_start $_ $com_end\n"); }
 485                 }
 486         }
 487
 488 sub main'label
 489         {
 490         if (!defined($label{$_[0]}))
 491                 {
 492                 $label{$_[0]}=".${label}${_[0]}";
 493                 $label++;
 494                 }
 495         return($label{$_[0]});
 496         }
 497
 498 sub main'set_label
 499         {
 500         if (!defined($label{$_[0]}))
 501                 {
 502                 $label{$_[0]}=".${label}${_[0]}";
 503                 $label++;
 504                 }
 505         push(@out,".align $align\n") if ($_[1] != 0);
 506         push(@out,"$label{$_[0]}:\n");
 507         }
 508
 509 sub main'file_end
 510         {
 511         # try to detect if SSE2 or MMX extensions were used on ELF platform...
 512         if ($main'elf && grep {/%[x]*mm[0-7]/i} @out) {
 513                 local($tmp);
 514
 515                 push (@out,"\n.comm\t".$under."OPENSSL_ia32cap,8,4\n");
 516
 517                 push (@out,".section\t.init\n");
 518                 # One can argue that it's wasteful to craft every
 519                 # SSE/MMX module with this snippet... Well, it's 72
 520                 # bytes long and for the moment we have two modules.
 521                 # Let's argue when we have 7 modules or so...
 522                 &main'picmeup("edx","OPENSSL_ia32cap");
 523                 $tmp=<<___;
 524                 cmpl    \$0,(%edx)
 525                 jne     1f
 526                 movl    \$1,(%edx)
 527                 pushf
 528                 popl    %eax
 529                 movl    %eax,%ecx
 530                 xorl    \$1<<21,%eax
 531                 pushl   %eax
 532                 popf
 533                 pushf
 534                 popl    %eax
 535                 xorl    %ecx,%eax
 536                 bt      \$21,%eax
 537                 jnc     1f
 538                 pushl   %edi
 539                 pushl   %ebx
 540                 movl    %edx,%edi
 541                 movl    \$1,%eax
 542                 cpuid
 543                 orl     \$1,%edx
 544                 movl    %edx,0(%edi)
 545                 movl    %ecx,4(%edi)
 546                 popl    %ebx
 547                 popl    %edi
 548         1:
 549 ___
 550                 push (@out,$tmp);
 551         }
 552
 553         if ($const ne "")
 554                 {
 555                 push(@out,".section .rodata\n");
 556                 push(@out,$const);
 557                 $const="";
 558                 }
 559         }
 560
 561 sub main'data_word
 562         {
 563         push(@out,"\t.long\t".join(',',@_)."\n");
 564         }
 565
 566 sub main'align
 567         {
 568         push(@out,".align $_[0]\n");
 569         }
 570
 571 # debug output functions: puts, putx, printf
 572
 573 sub main'puts
 574         {
 575         &pushvars();
 576         &main'push('$Lstring' . ++$constl);
 577         &main'call('puts');
 578         $stack-=4;
 579         &main'add("esp",4);
 580         &popvars();
 581
 582         $const .= "Lstring$constl:\n\t.string \"@_[0]\"\n";
 583         }
 584
 585 sub main'putx
 586         {
 587         &pushvars();
 588         &main'push($_[0]);
 589         &main'push('$Lstring' . ++$constl);
 590         &main'call('printf');
 591         &main'add("esp",8);
 592         $stack-=8;
 593         &popvars();
 594
 595         $const .= "Lstring$constl:\n\t.string \"\%X\"\n";
 596         }
 597
 598 sub main'printf
 599         {
 600         $ostack = $stack;
 601         &pushvars();
 602         for ($i = @_ - 1; $i >= 0; $i--)
 603                 {
 604                 if ($i == 0) # change this to support %s format strings
 605                         {
 606                         &main'push('$Lstring' . ++$constl);
 607                         $const .= "Lstring$constl:\n\t.string \"@_[$i]\"\n";
 608                         }
 609                 else
 610                         {
 611                         if ($_[$i] =~ /([0-9]*)\(%esp\)/)
 612                                 {
 613                                 &main'push(($1 + $stack - $ostack) . '(%esp)');
 614                                 }
 615                         else
 616                                 {
 617                                 &main'push($_[$i]);
 618                                 }
 619                         }
 620                 }
 621         &main'call('printf');
 622         $stack-=4*@_;
 623         &main'add("esp",4*@_);
 624         &popvars();
 625         }
 626
 627 sub pushvars
 628         {
 629         &main'pushf();
 630         &main'push("edx");
 631         &main'push("ecx");
 632         &main'push("eax");
 633         }
 634
 635 sub popvars
 636         {
 637         &main'pop("eax");
 638         &main'pop("ecx");
 639         &main'pop("edx");
 640         &main'popf();
 641         }
 642
 643 sub main'picmeup
 644         {
 645         local($dst,$sym)=@_;
 646         if ($main'cpp)
 647                 {
 648                 local($tmp)=<<___;
 649 #if (defined(ELF) || defined(SOL)) && defined(PIC)
 650         .align  4
 651         call    1f
 652 1:      popl    $regs{$dst}
 653         addl    \$_GLOBAL_OFFSET_TABLE_+[.-1b],$regs{$dst}
 654         movl    $sym\@GOT($regs{$dst}),$regs{$dst}
 655 #else
 656         leal    $sym,$regs{$dst}
 657 #endif
 658 ___
 659                 push(@out,$tmp);
 660                 }
 661         elsif ($main'pic && ($main'elf || $main'aout))
 662                 {
 663                 push(@out,"\t.align\t4\n");
 664                 &main'call(&main'label("PIC_me_up"));
 665                 &main'set_label("PIC_me_up");
 666                 &main'blindpop($dst);
 667                 &main'add($dst,"\$$under"."_GLOBAL_OFFSET_TABLE_+[.-".
 668                                 &main'label("PIC_me_up") . "]");
 669                 &main'mov($dst,&main'DWP($sym."\@GOT",$dst));
 670                 }
 671         else
 672                 {
 673                 &main'lea($dst,&main'DWP($sym));
 674                 }
 675         }
 676
 677 sub main'blindpop { &out1("popl",@_); }