1 /* 2 ** $Id: luac.c $ 3 ** Lua compiler (saves bytecodes to files; also lists bytecodes) 4 ** See Copyright Notice in lua.h 5 */ 6 7 #define luac_c 8 #define LUA_CORE 9 10 #include "lprefix.h" 11 12 #include <ctype.h> 13 #include <errno.h> 14 #include <stdio.h> 15 #include <stdlib.h> 16 #include <string.h> 17 18 #include "lua.h" 19 #include "lauxlib.h" 20 21 #include "ldebug.h" 22 #include "lobject.h" 23 #include "lopcodes.h" 24 #include "lopnames.h" 25 #include "lstate.h" 26 #include "lundump.h" 27 28 static void PrintFunction(const Proto* f, int full); 29 #define luaU_print PrintFunction 30 31 #define PROGNAME "luac" /* default program name */ 32 #define OUTPUT PROGNAME ".out" /* default output file */ 33 34 static int listing=0; /* list bytecodes? */ 35 static int dumping=1; /* dump bytecodes? */ 36 static int stripping=0; /* strip debug information? */ 37 static char Output[]={ OUTPUT }; /* default output file name */ 38 static const char* output=Output; /* actual output file name */ 39 static const char* progname=PROGNAME; /* actual program name */ 40 static TString **tmname; 41 42 static void fatal(const char* message) 43 { 44 fprintf(stderr,"%s: %s\n",progname,message); 45 exit(EXIT_FAILURE); 46 } 47 48 static void cannot(const char* what) 49 { 50 fprintf(stderr,"%s: cannot %s %s: %s\n",progname,what,output,strerror(errno)); 51 exit(EXIT_FAILURE); 52 } 53 54 static void usage(const char* message) 55 { 56 if (*message=='-') 57 fprintf(stderr,"%s: unrecognized option '%s'\n",progname,message); 58 else 59 fprintf(stderr,"%s: %s\n",progname,message); 60 fprintf(stderr, 61 "usage: %s [options] [filenames]\n" 62 "Available options are:\n" 63 " -l list (use -l -l for full listing)\n" 64 " -o name output to file 'name' (default is \"%s\")\n" 65 " -p parse only\n" 66 " -s strip debug information\n" 67 " -v show version information\n" 68 " -- stop handling options\n" 69 " - stop handling options and process stdin\n" 70 ,progname,Output); 71 exit(EXIT_FAILURE); 72 } 73 74 #define IS(s) (strcmp(argv[i],s)==0) 75 76 static int doargs(int argc, char* argv[]) 77 { 78 int i; 79 int version=0; 80 if (argv[0]!=NULL && *argv[0]!=0) progname=argv[0]; 81 for (i=1; i<argc; i++) 82 { 83 if (*argv[i]!='-') /* end of options; keep it */ 84 break; 85 else if (IS("--")) /* end of options; skip it */ 86 { 87 ++i; 88 if (version) ++version; 89 break; 90 } 91 else if (IS("-")) /* end of options; use stdin */ 92 break; 93 else if (IS("-l")) /* list */ 94 ++listing; 95 else if (IS("-o")) /* output file */ 96 { 97 output=argv[++i]; 98 if (output==NULL || *output==0 || (*output=='-' && output[1]!=0)) 99 usage("'-o' needs argument"); 100 if (IS("-")) output=NULL; 101 } 102 else if (IS("-p")) /* parse only */ 103 dumping=0; 104 else if (IS("-s")) /* strip debug information */ 105 stripping=1; 106 else if (IS("-v")) /* show version */ 107 ++version; 108 else /* unknown option */ 109 usage(argv[i]); 110 } 111 if (i==argc && (listing || !dumping)) 112 { 113 dumping=0; 114 argv[--i]=Output; 115 } 116 if (version) 117 { 118 printf("%s\n",LUA_COPYRIGHT); 119 if (version==argc-1) exit(EXIT_SUCCESS); 120 } 121 return i; 122 } 123 124 #define FUNCTION "(function()end)();" 125 126 static const char* reader(lua_State* L, void* ud, size_t* size) 127 { 128 UNUSED(L); 129 if ((*(int*)ud)--) 130 { 131 *size=sizeof(FUNCTION)-1; 132 return FUNCTION; 133 } 134 else 135 { 136 *size=0; 137 return NULL; 138 } 139 } 140 141 #define toproto(L,i) getproto(s2v(L->top+(i))) 142 143 static const Proto* combine(lua_State* L, int n) 144 { 145 if (n==1) 146 return toproto(L,-1); 147 else 148 { 149 Proto* f; 150 int i=n; 151 if (lua_load(L,reader,&i,"=(" PROGNAME ")",NULL)!=LUA_OK) fatal(lua_tostring(L,-1)); 152 f=toproto(L,-1); 153 for (i=0; i<n; i++) 154 { 155 f->p[i]=toproto(L,i-n-1); 156 if (f->p[i]->sizeupvalues>0) f->p[i]->upvalues[0].instack=0; 157 } 158 f->sizelineinfo=0; 159 return f; 160 } 161 } 162 163 static int writer(lua_State* L, const void* p, size_t size, void* u) 164 { 165 UNUSED(L); 166 return (fwrite(p,size,1,(FILE*)u)!=1) && (size!=0); 167 } 168 169 static int pmain(lua_State* L) 170 { 171 int argc=(int)lua_tointeger(L,1); 172 char** argv=(char**)lua_touserdata(L,2); 173 const Proto* f; 174 int i; 175 tmname=G(L)->tmname; 176 if (!lua_checkstack(L,argc)) fatal("too many input files"); 177 for (i=0; i<argc; i++) 178 { 179 const char* filename=IS("-") ? NULL : argv[i]; 180 if (luaL_loadfile(L,filename)!=LUA_OK) fatal(lua_tostring(L,-1)); 181 } 182 f=combine(L,argc); 183 if (listing) luaU_print(f,listing>1); 184 if (dumping) 185 { 186 FILE* D= (output==NULL) ? stdout : fopen(output,"wb"); 187 if (D==NULL) cannot("open"); 188 lua_lock(L); 189 luaU_dump(L,f,writer,D,stripping); 190 lua_unlock(L); 191 if (ferror(D)) cannot("write"); 192 if (fclose(D)) cannot("close"); 193 } 194 return 0; 195 } 196 197 int main(int argc, char* argv[]) 198 { 199 lua_State* L; 200 int i=doargs(argc,argv); 201 argc-=i; argv+=i; 202 if (argc<=0) usage("no input files given"); 203 L=luaL_newstate(); 204 if (L==NULL) fatal("cannot create state: not enough memory"); 205 lua_pushcfunction(L,&pmain); 206 lua_pushinteger(L,argc); 207 lua_pushlightuserdata(L,argv); 208 if (lua_pcall(L,2,0,0)!=LUA_OK) fatal(lua_tostring(L,-1)); 209 lua_close(L); 210 return EXIT_SUCCESS; 211 } 212 213 /* 214 ** print bytecodes 215 */ 216 217 #define UPVALNAME(x) ((f->upvalues[x].name) ? getstr(f->upvalues[x].name) : "-") 218 #define VOID(p) ((const void*)(p)) 219 #define eventname(i) (getstr(tmname[i])) 220 221 static void PrintString(const TString* ts) 222 { 223 const char* s=getstr(ts); 224 size_t i,n=tsslen(ts); 225 printf("\""); 226 for (i=0; i<n; i++) 227 { 228 int c=(int)(unsigned char)s[i]; 229 switch (c) 230 { 231 case '"': 232 printf("\\\""); 233 break; 234 case '\\': 235 printf("\\\\"); 236 break; 237 case '\a': 238 printf("\\a"); 239 break; 240 case '\b': 241 printf("\\b"); 242 break; 243 case '\f': 244 printf("\\f"); 245 break; 246 case '\n': 247 printf("\\n"); 248 break; 249 case '\r': 250 printf("\\r"); 251 break; 252 case '\t': 253 printf("\\t"); 254 break; 255 case '\v': 256 printf("\\v"); 257 break; 258 default: 259 if (isprint(c)) printf("%c",c); else printf("\\%03d",c); 260 break; 261 } 262 } 263 printf("\""); 264 } 265 266 static void PrintType(const Proto* f, int i) 267 { 268 const TValue* o=&f->k[i]; 269 switch (ttypetag(o)) 270 { 271 case LUA_VNIL: 272 printf("N"); 273 break; 274 case LUA_VFALSE: 275 case LUA_VTRUE: 276 printf("B"); 277 break; 278 case LUA_VNUMFLT: 279 printf("F"); 280 break; 281 case LUA_VNUMINT: 282 printf("I"); 283 break; 284 case LUA_VSHRSTR: 285 case LUA_VLNGSTR: 286 printf("S"); 287 break; 288 default: /* cannot happen */ 289 printf("?%d",ttypetag(o)); 290 break; 291 } 292 printf("\t"); 293 } 294 295 static void PrintConstant(const Proto* f, int i) 296 { 297 const TValue* o=&f->k[i]; 298 switch (ttypetag(o)) 299 { 300 case LUA_VNIL: 301 printf("nil"); 302 break; 303 case LUA_VFALSE: 304 printf("false"); 305 break; 306 case LUA_VTRUE: 307 printf("true"); 308 break; 309 case LUA_VNUMFLT: 310 { 311 char buff[100]; 312 sprintf(buff,LUA_NUMBER_FMT,fltvalue(o)); 313 printf("%s",buff); 314 if (buff[strspn(buff,"-0123456789")]=='\0') printf(".0"); 315 break; 316 } 317 case LUA_VNUMINT: 318 printf(LUA_INTEGER_FMT,ivalue(o)); 319 break; 320 case LUA_VSHRSTR: 321 case LUA_VLNGSTR: 322 PrintString(tsvalue(o)); 323 break; 324 default: /* cannot happen */ 325 printf("?%d",ttypetag(o)); 326 break; 327 } 328 } 329 330 #define COMMENT "\t; " 331 #define EXTRAARG GETARG_Ax(code[pc+1]) 332 #define EXTRAARGC (EXTRAARG*(MAXARG_C+1)) 333 #define ISK (isk ? "k" : "") 334 335 static void PrintCode(const Proto* f) 336 { 337 const Instruction* code=f->code; 338 int pc,n=f->sizecode; 339 for (pc=0; pc<n; pc++) 340 { 341 Instruction i=code[pc]; 342 OpCode o=GET_OPCODE(i); 343 int a=GETARG_A(i); 344 int b=GETARG_B(i); 345 int c=GETARG_C(i); 346 int ax=GETARG_Ax(i); 347 int bx=GETARG_Bx(i); 348 int sb=GETARG_sB(i); 349 int sc=GETARG_sC(i); 350 int sbx=GETARG_sBx(i); 351 int isk=GETARG_k(i); 352 int line=luaG_getfuncline(f,pc); 353 printf("\t%d\t",pc+1); 354 if (line>0) printf("[%d]\t",line); else printf("[-]\t"); 355 printf("%-9s\t",opnames[o]); 356 switch (o) 357 { 358 case OP_MOVE: 359 printf("%d %d",a,b); 360 break; 361 case OP_LOADI: 362 printf("%d %d",a,sbx); 363 break; 364 case OP_LOADF: 365 printf("%d %d",a,sbx); 366 break; 367 case OP_LOADK: 368 printf("%d %d",a,bx); 369 printf(COMMENT); PrintConstant(f,bx); 370 break; 371 case OP_LOADKX: 372 printf("%d",a); 373 printf(COMMENT); PrintConstant(f,EXTRAARG); 374 break; 375 case OP_LOADFALSE: 376 printf("%d",a); 377 break; 378 case OP_LFALSESKIP: 379 printf("%d",a); 380 break; 381 case OP_LOADTRUE: 382 printf("%d",a); 383 break; 384 case OP_LOADNIL: 385 printf("%d %d",a,b); 386 printf(COMMENT "%d out",b+1); 387 break; 388 case OP_GETUPVAL: 389 printf("%d %d",a,b); 390 printf(COMMENT "%s",UPVALNAME(b)); 391 break; 392 case OP_SETUPVAL: 393 printf("%d %d",a,b); 394 printf(COMMENT "%s",UPVALNAME(b)); 395 break; 396 case OP_GETTABUP: 397 printf("%d %d %d",a,b,c); 398 printf(COMMENT "%s",UPVALNAME(b)); 399 printf(" "); PrintConstant(f,c); 400 break; 401 case OP_GETTABLE: 402 printf("%d %d %d",a,b,c); 403 break; 404 case OP_GETI: 405 printf("%d %d %d",a,b,c); 406 break; 407 case OP_GETFIELD: 408 printf("%d %d %d",a,b,c); 409 printf(COMMENT); PrintConstant(f,c); 410 break; 411 case OP_SETTABUP: 412 printf("%d %d %d%s",a,b,c,ISK); 413 printf(COMMENT "%s",UPVALNAME(a)); 414 printf(" "); PrintConstant(f,b); 415 if (isk) { printf(" "); PrintConstant(f,c); } 416 break; 417 case OP_SETTABLE: 418 printf("%d %d %d%s",a,b,c,ISK); 419 if (isk) { printf(COMMENT); PrintConstant(f,c); } 420 break; 421 case OP_SETI: 422 printf("%d %d %d%s",a,b,c,ISK); 423 if (isk) { printf(COMMENT); PrintConstant(f,c); } 424 break; 425 case OP_SETFIELD: 426 printf("%d %d %d%s",a,b,c,ISK); 427 printf(COMMENT); PrintConstant(f,b); 428 if (isk) { printf(" "); PrintConstant(f,c); } 429 break; 430 case OP_NEWTABLE: 431 printf("%d %d %d",a,b,c); 432 printf(COMMENT "%d",c+EXTRAARGC); 433 break; 434 case OP_SELF: 435 printf("%d %d %d%s",a,b,c,ISK); 436 if (isk) { printf(COMMENT); PrintConstant(f,c); } 437 break; 438 case OP_ADDI: 439 printf("%d %d %d",a,b,sc); 440 break; 441 case OP_ADDK: 442 printf("%d %d %d",a,b,c); 443 printf(COMMENT); PrintConstant(f,c); 444 break; 445 case OP_SUBK: 446 printf("%d %d %d",a,b,c); 447 printf(COMMENT); PrintConstant(f,c); 448 break; 449 case OP_MULK: 450 printf("%d %d %d",a,b,c); 451 printf(COMMENT); PrintConstant(f,c); 452 break; 453 case OP_MODK: 454 printf("%d %d %d",a,b,c); 455 printf(COMMENT); PrintConstant(f,c); 456 break; 457 case OP_POWK: 458 printf("%d %d %d",a,b,c); 459 printf(COMMENT); PrintConstant(f,c); 460 break; 461 case OP_DIVK: 462 printf("%d %d %d",a,b,c); 463 printf(COMMENT); PrintConstant(f,c); 464 break; 465 case OP_IDIVK: 466 printf("%d %d %d",a,b,c); 467 printf(COMMENT); PrintConstant(f,c); 468 break; 469 case OP_BANDK: 470 printf("%d %d %d",a,b,c); 471 printf(COMMENT); PrintConstant(f,c); 472 break; 473 case OP_BORK: 474 printf("%d %d %d",a,b,c); 475 printf(COMMENT); PrintConstant(f,c); 476 break; 477 case OP_BXORK: 478 printf("%d %d %d",a,b,c); 479 printf(COMMENT); PrintConstant(f,c); 480 break; 481 case OP_SHRI: 482 printf("%d %d %d",a,b,sc); 483 break; 484 case OP_SHLI: 485 printf("%d %d %d",a,b,sc); 486 break; 487 case OP_ADD: 488 printf("%d %d %d",a,b,c); 489 break; 490 case OP_SUB: 491 printf("%d %d %d",a,b,c); 492 break; 493 case OP_MUL: 494 printf("%d %d %d",a,b,c); 495 break; 496 case OP_MOD: 497 printf("%d %d %d",a,b,c); 498 break; 499 case OP_POW: 500 printf("%d %d %d",a,b,c); 501 break; 502 case OP_DIV: 503 printf("%d %d %d",a,b,c); 504 break; 505 case OP_IDIV: 506 printf("%d %d %d",a,b,c); 507 break; 508 case OP_BAND: 509 printf("%d %d %d",a,b,c); 510 break; 511 case OP_BOR: 512 printf("%d %d %d",a,b,c); 513 break; 514 case OP_BXOR: 515 printf("%d %d %d",a,b,c); 516 break; 517 case OP_SHL: 518 printf("%d %d %d",a,b,c); 519 break; 520 case OP_SHR: 521 printf("%d %d %d",a,b,c); 522 break; 523 case OP_MMBIN: 524 printf("%d %d %d",a,b,c); 525 printf(COMMENT "%s",eventname(c)); 526 break; 527 case OP_MMBINI: 528 printf("%d %d %d %d",a,sb,c,isk); 529 printf(COMMENT "%s",eventname(c)); 530 if (isk) printf(" flip"); 531 break; 532 case OP_MMBINK: 533 printf("%d %d %d %d",a,b,c,isk); 534 printf(COMMENT "%s ",eventname(c)); PrintConstant(f,b); 535 if (isk) printf(" flip"); 536 break; 537 case OP_UNM: 538 printf("%d %d",a,b); 539 break; 540 case OP_BNOT: 541 printf("%d %d",a,b); 542 break; 543 case OP_NOT: 544 printf("%d %d",a,b); 545 break; 546 case OP_LEN: 547 printf("%d %d",a,b); 548 break; 549 case OP_CONCAT: 550 printf("%d %d",a,b); 551 break; 552 case OP_CLOSE: 553 printf("%d",a); 554 break; 555 case OP_TBC: 556 printf("%d",a); 557 break; 558 case OP_JMP: 559 printf("%d",GETARG_sJ(i)); 560 printf(COMMENT "to %d",GETARG_sJ(i)+pc+2); 561 break; 562 case OP_EQ: 563 printf("%d %d %d",a,b,isk); 564 break; 565 case OP_LT: 566 printf("%d %d %d",a,b,isk); 567 break; 568 case OP_LE: 569 printf("%d %d %d",a,b,isk); 570 break; 571 case OP_EQK: 572 printf("%d %d %d",a,b,isk); 573 printf(COMMENT); PrintConstant(f,b); 574 break; 575 case OP_EQI: 576 printf("%d %d %d",a,sb,isk); 577 break; 578 case OP_LTI: 579 printf("%d %d %d",a,sb,isk); 580 break; 581 case OP_LEI: 582 printf("%d %d %d",a,sb,isk); 583 break; 584 case OP_GTI: 585 printf("%d %d %d",a,sb,isk); 586 break; 587 case OP_GEI: 588 printf("%d %d %d",a,sb,isk); 589 break; 590 case OP_TEST: 591 printf("%d %d",a,isk); 592 break; 593 case OP_TESTSET: 594 printf("%d %d %d",a,b,isk); 595 break; 596 case OP_CALL: 597 printf("%d %d %d",a,b,c); 598 printf(COMMENT); 599 if (b==0) printf("all in "); else printf("%d in ",b-1); 600 if (c==0) printf("all out"); else printf("%d out",c-1); 601 break; 602 case OP_TAILCALL: 603 printf("%d %d %d",a,b,c); 604 printf(COMMENT "%d in",b-1); 605 break; 606 case OP_RETURN: 607 printf("%d %d %d",a,b,c); 608 printf(COMMENT); 609 if (b==0) printf("all out"); else printf("%d out",b-1); 610 break; 611 case OP_RETURN0: 612 break; 613 case OP_RETURN1: 614 printf("%d",a); 615 break; 616 case OP_FORLOOP: 617 printf("%d %d",a,bx); 618 printf(COMMENT "to %d",pc-bx+2); 619 break; 620 case OP_FORPREP: 621 printf("%d %d",a,bx); 622 printf(COMMENT "to %d",pc+bx+2); 623 break; 624 case OP_TFORPREP: 625 printf("%d %d",a,bx); 626 printf(COMMENT "to %d",pc+bx+2); 627 break; 628 case OP_TFORCALL: 629 printf("%d %d",a,c); 630 break; 631 case OP_TFORLOOP: 632 printf("%d %d",a,bx); 633 printf(COMMENT "to %d",pc-bx+2); 634 break; 635 case OP_SETLIST: 636 printf("%d %d %d",a,b,c); 637 if (isk) printf(COMMENT "%d",c+EXTRAARGC); 638 break; 639 case OP_CLOSURE: 640 printf("%d %d",a,bx); 641 printf(COMMENT "%p",VOID(f->p[bx])); 642 break; 643 case OP_VARARG: 644 printf("%d %d",a,c); 645 printf(COMMENT); 646 if (c==0) printf("all out"); else printf("%d out",c-1); 647 break; 648 case OP_VARARGPREP: 649 printf("%d",a); 650 break; 651 case OP_EXTRAARG: 652 printf("%d",ax); 653 break; 654 #if 0 655 default: 656 printf("%d %d %d",a,b,c); 657 printf(COMMENT "not handled"); 658 break; 659 #endif 660 } 661 printf("\n"); 662 } 663 } 664 665 666 #define SS(x) ((x==1)?"":"s") 667 #define S(x) (int)(x),SS(x) 668 669 static void PrintHeader(const Proto* f) 670 { 671 const char* s=f->source ? getstr(f->source) : "=?"; 672 if (*s=='@' || *s=='=') 673 s++; 674 else if (*s==LUA_SIGNATURE[0]) 675 s="(bstring)"; 676 else 677 s="(string)"; 678 printf("\n%s <%s:%d,%d> (%d instruction%s at %p)\n", 679 (f->linedefined==0)?"main":"function",s, 680 f->linedefined,f->lastlinedefined, 681 S(f->sizecode),VOID(f)); 682 printf("%d%s param%s, %d slot%s, %d upvalue%s, ", 683 (int)(f->numparams),f->is_vararg?"+":"",SS(f->numparams), 684 S(f->maxstacksize),S(f->sizeupvalues)); 685 printf("%d local%s, %d constant%s, %d function%s\n", 686 S(f->sizelocvars),S(f->sizek),S(f->sizep)); 687 } 688 689 static void PrintDebug(const Proto* f) 690 { 691 int i,n; 692 n=f->sizek; 693 printf("constants (%d) for %p:\n",n,VOID(f)); 694 for (i=0; i<n; i++) 695 { 696 printf("\t%d\t",i); 697 PrintType(f,i); 698 PrintConstant(f,i); 699 printf("\n"); 700 } 701 n=f->sizelocvars; 702 printf("locals (%d) for %p:\n",n,VOID(f)); 703 for (i=0; i<n; i++) 704 { 705 printf("\t%d\t%s\t%d\t%d\n", 706 i,getstr(f->locvars[i].varname),f->locvars[i].startpc+1,f->locvars[i].endpc+1); 707 } 708 n=f->sizeupvalues; 709 printf("upvalues (%d) for %p:\n",n,VOID(f)); 710 for (i=0; i<n; i++) 711 { 712 printf("\t%d\t%s\t%d\t%d\n", 713 i,UPVALNAME(i),f->upvalues[i].instack,f->upvalues[i].idx); 714 } 715 } 716 717 static void PrintFunction(const Proto* f, int full) 718 { 719 int i,n=f->sizep; 720 PrintHeader(f); 721 PrintCode(f); 722 if (full) PrintDebug(f); 723 for (i=0; i<n; i++) PrintFunction(f->p[i],full); 724 } 725