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 luaM_freearray(L,f->lineinfo,f->sizelineinfo); 159 f->sizelineinfo=0; 160 return f; 161 } 162 } 163 164 static int writer(lua_State* L, const void* p, size_t size, void* u) 165 { 166 UNUSED(L); 167 return (fwrite(p,size,1,(FILE*)u)!=1) && (size!=0); 168 } 169 170 static int pmain(lua_State* L) 171 { 172 int argc=(int)lua_tointeger(L,1); 173 char** argv=(char**)lua_touserdata(L,2); 174 const Proto* f; 175 int i; 176 tmname=G(L)->tmname; 177 if (!lua_checkstack(L,argc)) fatal("too many input files"); 178 for (i=0; i<argc; i++) 179 { 180 const char* filename=IS("-") ? NULL : argv[i]; 181 if (luaL_loadfile(L,filename)!=LUA_OK) fatal(lua_tostring(L,-1)); 182 } 183 f=combine(L,argc); 184 if (listing) luaU_print(f,listing>1); 185 if (dumping) 186 { 187 FILE* D= (output==NULL) ? stdout : fopen(output,"wb"); 188 if (D==NULL) cannot("open"); 189 lua_lock(L); 190 luaU_dump(L,f,writer,D,stripping); 191 lua_unlock(L); 192 if (ferror(D)) cannot("write"); 193 if (fclose(D)) cannot("close"); 194 } 195 return 0; 196 } 197 198 int main(int argc, char* argv[]) 199 { 200 lua_State* L; 201 int i=doargs(argc,argv); 202 argc-=i; argv+=i; 203 if (argc<=0) usage("no input files given"); 204 L=luaL_newstate(); 205 if (L==NULL) fatal("cannot create state: not enough memory"); 206 lua_pushcfunction(L,&pmain); 207 lua_pushinteger(L,argc); 208 lua_pushlightuserdata(L,argv); 209 if (lua_pcall(L,2,0,0)!=LUA_OK) fatal(lua_tostring(L,-1)); 210 lua_close(L); 211 return EXIT_SUCCESS; 212 } 213 214 /* 215 ** print bytecodes 216 */ 217 218 #define UPVALNAME(x) ((f->upvalues[x].name) ? getstr(f->upvalues[x].name) : "-") 219 #define VOID(p) ((const void*)(p)) 220 #define eventname(i) (getstr(tmname[i])) 221 222 static void PrintString(const TString* ts) 223 { 224 const char* s=getstr(ts); 225 size_t i,n=tsslen(ts); 226 printf("\""); 227 for (i=0; i<n; i++) 228 { 229 int c=(int)(unsigned char)s[i]; 230 switch (c) 231 { 232 case '"': 233 printf("\\\""); 234 break; 235 case '\\': 236 printf("\\\\"); 237 break; 238 case '\a': 239 printf("\\a"); 240 break; 241 case '\b': 242 printf("\\b"); 243 break; 244 case '\f': 245 printf("\\f"); 246 break; 247 case '\n': 248 printf("\\n"); 249 break; 250 case '\r': 251 printf("\\r"); 252 break; 253 case '\t': 254 printf("\\t"); 255 break; 256 case '\v': 257 printf("\\v"); 258 break; 259 default: 260 if (isprint(c)) printf("%c",c); else printf("\\%03d",c); 261 break; 262 } 263 } 264 printf("\""); 265 } 266 267 static void PrintType(const Proto* f, int i) 268 { 269 const TValue* o=&f->k[i]; 270 switch (ttypetag(o)) 271 { 272 case LUA_VNIL: 273 printf("N"); 274 break; 275 case LUA_VFALSE: 276 case LUA_VTRUE: 277 printf("B"); 278 break; 279 case LUA_VNUMFLT: 280 printf("F"); 281 break; 282 case LUA_VNUMINT: 283 printf("I"); 284 break; 285 case LUA_VSHRSTR: 286 case LUA_VLNGSTR: 287 printf("S"); 288 break; 289 default: /* cannot happen */ 290 printf("?%d",ttypetag(o)); 291 break; 292 } 293 printf("\t"); 294 } 295 296 static void PrintConstant(const Proto* f, int i) 297 { 298 const TValue* o=&f->k[i]; 299 switch (ttypetag(o)) 300 { 301 case LUA_VNIL: 302 printf("nil"); 303 break; 304 case LUA_VFALSE: 305 printf("false"); 306 break; 307 case LUA_VTRUE: 308 printf("true"); 309 break; 310 case LUA_VNUMFLT: 311 { 312 char buff[100]; 313 sprintf(buff,LUA_NUMBER_FMT,fltvalue(o)); 314 printf("%s",buff); 315 if (buff[strspn(buff,"-0123456789")]=='\0') printf(".0"); 316 break; 317 } 318 case LUA_VNUMINT: 319 printf(LUA_INTEGER_FMT,ivalue(o)); 320 break; 321 case LUA_VSHRSTR: 322 case LUA_VLNGSTR: 323 PrintString(tsvalue(o)); 324 break; 325 default: /* cannot happen */ 326 printf("?%d",ttypetag(o)); 327 break; 328 } 329 } 330 331 #define COMMENT "\t; " 332 #define EXTRAARG GETARG_Ax(code[pc+1]) 333 #define EXTRAARGC (EXTRAARG*(MAXARG_C+1)) 334 #define ISK (isk ? "k" : "") 335 336 static void PrintCode(const Proto* f) 337 { 338 const Instruction* code=f->code; 339 int pc,n=f->sizecode; 340 for (pc=0; pc<n; pc++) 341 { 342 Instruction i=code[pc]; 343 OpCode o=GET_OPCODE(i); 344 int a=GETARG_A(i); 345 int b=GETARG_B(i); 346 int c=GETARG_C(i); 347 int ax=GETARG_Ax(i); 348 int bx=GETARG_Bx(i); 349 int sb=GETARG_sB(i); 350 int sc=GETARG_sC(i); 351 int sbx=GETARG_sBx(i); 352 int isk=GETARG_k(i); 353 int line=luaG_getfuncline(f,pc); 354 printf("\t%d\t",pc+1); 355 if (line>0) printf("[%d]\t",line); else printf("[-]\t"); 356 printf("%-9s\t",opnames[o]); 357 switch (o) 358 { 359 case OP_MOVE: 360 printf("%d %d",a,b); 361 break; 362 case OP_LOADI: 363 printf("%d %d",a,sbx); 364 break; 365 case OP_LOADF: 366 printf("%d %d",a,sbx); 367 break; 368 case OP_LOADK: 369 printf("%d %d",a,bx); 370 printf(COMMENT); PrintConstant(f,bx); 371 break; 372 case OP_LOADKX: 373 printf("%d",a); 374 printf(COMMENT); PrintConstant(f,EXTRAARG); 375 break; 376 case OP_LOADFALSE: 377 printf("%d",a); 378 break; 379 case OP_LFALSESKIP: 380 printf("%d",a); 381 break; 382 case OP_LOADTRUE: 383 printf("%d",a); 384 break; 385 case OP_LOADNIL: 386 printf("%d %d",a,b); 387 printf(COMMENT "%d out",b+1); 388 break; 389 case OP_GETUPVAL: 390 printf("%d %d",a,b); 391 printf(COMMENT "%s",UPVALNAME(b)); 392 break; 393 case OP_SETUPVAL: 394 printf("%d %d",a,b); 395 printf(COMMENT "%s",UPVALNAME(b)); 396 break; 397 case OP_GETTABUP: 398 printf("%d %d %d",a,b,c); 399 printf(COMMENT "%s",UPVALNAME(b)); 400 printf(" "); PrintConstant(f,c); 401 break; 402 case OP_GETTABLE: 403 printf("%d %d %d",a,b,c); 404 break; 405 case OP_GETI: 406 printf("%d %d %d",a,b,c); 407 break; 408 case OP_GETFIELD: 409 printf("%d %d %d",a,b,c); 410 printf(COMMENT); PrintConstant(f,c); 411 break; 412 case OP_SETTABUP: 413 printf("%d %d %d%s",a,b,c,ISK); 414 printf(COMMENT "%s",UPVALNAME(a)); 415 printf(" "); PrintConstant(f,b); 416 if (isk) { printf(" "); PrintConstant(f,c); } 417 break; 418 case OP_SETTABLE: 419 printf("%d %d %d%s",a,b,c,ISK); 420 if (isk) { printf(COMMENT); PrintConstant(f,c); } 421 break; 422 case OP_SETI: 423 printf("%d %d %d%s",a,b,c,ISK); 424 if (isk) { printf(COMMENT); PrintConstant(f,c); } 425 break; 426 case OP_SETFIELD: 427 printf("%d %d %d%s",a,b,c,ISK); 428 printf(COMMENT); PrintConstant(f,b); 429 if (isk) { printf(" "); PrintConstant(f,c); } 430 break; 431 case OP_NEWTABLE: 432 printf("%d %d %d",a,b,c); 433 printf(COMMENT "%d",c+EXTRAARGC); 434 break; 435 case OP_SELF: 436 printf("%d %d %d%s",a,b,c,ISK); 437 if (isk) { printf(COMMENT); PrintConstant(f,c); } 438 break; 439 case OP_ADDI: 440 printf("%d %d %d",a,b,sc); 441 break; 442 case OP_ADDK: 443 printf("%d %d %d",a,b,c); 444 printf(COMMENT); PrintConstant(f,c); 445 break; 446 case OP_SUBK: 447 printf("%d %d %d",a,b,c); 448 printf(COMMENT); PrintConstant(f,c); 449 break; 450 case OP_MULK: 451 printf("%d %d %d",a,b,c); 452 printf(COMMENT); PrintConstant(f,c); 453 break; 454 case OP_MODK: 455 printf("%d %d %d",a,b,c); 456 printf(COMMENT); PrintConstant(f,c); 457 break; 458 case OP_POWK: 459 printf("%d %d %d",a,b,c); 460 printf(COMMENT); PrintConstant(f,c); 461 break; 462 case OP_DIVK: 463 printf("%d %d %d",a,b,c); 464 printf(COMMENT); PrintConstant(f,c); 465 break; 466 case OP_IDIVK: 467 printf("%d %d %d",a,b,c); 468 printf(COMMENT); PrintConstant(f,c); 469 break; 470 case OP_BANDK: 471 printf("%d %d %d",a,b,c); 472 printf(COMMENT); PrintConstant(f,c); 473 break; 474 case OP_BORK: 475 printf("%d %d %d",a,b,c); 476 printf(COMMENT); PrintConstant(f,c); 477 break; 478 case OP_BXORK: 479 printf("%d %d %d",a,b,c); 480 printf(COMMENT); PrintConstant(f,c); 481 break; 482 case OP_SHRI: 483 printf("%d %d %d",a,b,sc); 484 break; 485 case OP_SHLI: 486 printf("%d %d %d",a,b,sc); 487 break; 488 case OP_ADD: 489 printf("%d %d %d",a,b,c); 490 break; 491 case OP_SUB: 492 printf("%d %d %d",a,b,c); 493 break; 494 case OP_MUL: 495 printf("%d %d %d",a,b,c); 496 break; 497 case OP_MOD: 498 printf("%d %d %d",a,b,c); 499 break; 500 case OP_POW: 501 printf("%d %d %d",a,b,c); 502 break; 503 case OP_DIV: 504 printf("%d %d %d",a,b,c); 505 break; 506 case OP_IDIV: 507 printf("%d %d %d",a,b,c); 508 break; 509 case OP_BAND: 510 printf("%d %d %d",a,b,c); 511 break; 512 case OP_BOR: 513 printf("%d %d %d",a,b,c); 514 break; 515 case OP_BXOR: 516 printf("%d %d %d",a,b,c); 517 break; 518 case OP_SHL: 519 printf("%d %d %d",a,b,c); 520 break; 521 case OP_SHR: 522 printf("%d %d %d",a,b,c); 523 break; 524 case OP_MMBIN: 525 printf("%d %d %d",a,b,c); 526 printf(COMMENT "%s",eventname(c)); 527 break; 528 case OP_MMBINI: 529 printf("%d %d %d %d",a,sb,c,isk); 530 printf(COMMENT "%s",eventname(c)); 531 if (isk) printf(" flip"); 532 break; 533 case OP_MMBINK: 534 printf("%d %d %d %d",a,b,c,isk); 535 printf(COMMENT "%s ",eventname(c)); PrintConstant(f,b); 536 if (isk) printf(" flip"); 537 break; 538 case OP_UNM: 539 printf("%d %d",a,b); 540 break; 541 case OP_BNOT: 542 printf("%d %d",a,b); 543 break; 544 case OP_NOT: 545 printf("%d %d",a,b); 546 break; 547 case OP_LEN: 548 printf("%d %d",a,b); 549 break; 550 case OP_CONCAT: 551 printf("%d %d",a,b); 552 break; 553 case OP_CLOSE: 554 printf("%d",a); 555 break; 556 case OP_TBC: 557 printf("%d",a); 558 break; 559 case OP_JMP: 560 printf("%d",GETARG_sJ(i)); 561 printf(COMMENT "to %d",GETARG_sJ(i)+pc+2); 562 break; 563 case OP_EQ: 564 printf("%d %d %d",a,b,isk); 565 break; 566 case OP_LT: 567 printf("%d %d %d",a,b,isk); 568 break; 569 case OP_LE: 570 printf("%d %d %d",a,b,isk); 571 break; 572 case OP_EQK: 573 printf("%d %d %d",a,b,isk); 574 printf(COMMENT); PrintConstant(f,b); 575 break; 576 case OP_EQI: 577 printf("%d %d %d",a,sb,isk); 578 break; 579 case OP_LTI: 580 printf("%d %d %d",a,sb,isk); 581 break; 582 case OP_LEI: 583 printf("%d %d %d",a,sb,isk); 584 break; 585 case OP_GTI: 586 printf("%d %d %d",a,sb,isk); 587 break; 588 case OP_GEI: 589 printf("%d %d %d",a,sb,isk); 590 break; 591 case OP_TEST: 592 printf("%d %d",a,isk); 593 break; 594 case OP_TESTSET: 595 printf("%d %d %d",a,b,isk); 596 break; 597 case OP_CALL: 598 printf("%d %d %d",a,b,c); 599 printf(COMMENT); 600 if (b==0) printf("all in "); else printf("%d in ",b-1); 601 if (c==0) printf("all out"); else printf("%d out",c-1); 602 break; 603 case OP_TAILCALL: 604 printf("%d %d %d%s",a,b,c,ISK); 605 printf(COMMENT "%d in",b-1); 606 break; 607 case OP_RETURN: 608 printf("%d %d %d%s",a,b,c,ISK); 609 printf(COMMENT); 610 if (b==0) printf("all out"); else printf("%d out",b-1); 611 break; 612 case OP_RETURN0: 613 break; 614 case OP_RETURN1: 615 printf("%d",a); 616 break; 617 case OP_FORLOOP: 618 printf("%d %d",a,bx); 619 printf(COMMENT "to %d",pc-bx+2); 620 break; 621 case OP_FORPREP: 622 printf("%d %d",a,bx); 623 printf(COMMENT "exit to %d",pc+bx+3); 624 break; 625 case OP_TFORPREP: 626 printf("%d %d",a,bx); 627 printf(COMMENT "to %d",pc+bx+2); 628 break; 629 case OP_TFORCALL: 630 printf("%d %d",a,c); 631 break; 632 case OP_TFORLOOP: 633 printf("%d %d",a,bx); 634 printf(COMMENT "to %d",pc-bx+2); 635 break; 636 case OP_SETLIST: 637 printf("%d %d %d",a,b,c); 638 if (isk) printf(COMMENT "%d",c+EXTRAARGC); 639 break; 640 case OP_CLOSURE: 641 printf("%d %d",a,bx); 642 printf(COMMENT "%p",VOID(f->p[bx])); 643 break; 644 case OP_VARARG: 645 printf("%d %d",a,c); 646 printf(COMMENT); 647 if (c==0) printf("all out"); else printf("%d out",c-1); 648 break; 649 case OP_VARARGPREP: 650 printf("%d",a); 651 break; 652 case OP_EXTRAARG: 653 printf("%d",ax); 654 break; 655 #if 0 656 default: 657 printf("%d %d %d",a,b,c); 658 printf(COMMENT "not handled"); 659 break; 660 #endif 661 } 662 printf("\n"); 663 } 664 } 665 666 667 #define SS(x) ((x==1)?"":"s") 668 #define S(x) (int)(x),SS(x) 669 670 static void PrintHeader(const Proto* f) 671 { 672 const char* s=f->source ? getstr(f->source) : "=?"; 673 if (*s=='@' || *s=='=') 674 s++; 675 else if (*s==LUA_SIGNATURE[0]) 676 s="(bstring)"; 677 else 678 s="(string)"; 679 printf("\n%s <%s:%d,%d> (%d instruction%s at %p)\n", 680 (f->linedefined==0)?"main":"function",s, 681 f->linedefined,f->lastlinedefined, 682 S(f->sizecode),VOID(f)); 683 printf("%d%s param%s, %d slot%s, %d upvalue%s, ", 684 (int)(f->numparams),f->is_vararg?"+":"",SS(f->numparams), 685 S(f->maxstacksize),S(f->sizeupvalues)); 686 printf("%d local%s, %d constant%s, %d function%s\n", 687 S(f->sizelocvars),S(f->sizek),S(f->sizep)); 688 } 689 690 static void PrintDebug(const Proto* f) 691 { 692 int i,n; 693 n=f->sizek; 694 printf("constants (%d) for %p:\n",n,VOID(f)); 695 for (i=0; i<n; i++) 696 { 697 printf("\t%d\t",i); 698 PrintType(f,i); 699 PrintConstant(f,i); 700 printf("\n"); 701 } 702 n=f->sizelocvars; 703 printf("locals (%d) for %p:\n",n,VOID(f)); 704 for (i=0; i<n; i++) 705 { 706 printf("\t%d\t%s\t%d\t%d\n", 707 i,getstr(f->locvars[i].varname),f->locvars[i].startpc+1,f->locvars[i].endpc+1); 708 } 709 n=f->sizeupvalues; 710 printf("upvalues (%d) for %p:\n",n,VOID(f)); 711 for (i=0; i<n; i++) 712 { 713 printf("\t%d\t%s\t%d\t%d\n", 714 i,UPVALNAME(i),f->upvalues[i].instack,f->upvalues[i].idx); 715 } 716 } 717 718 static void PrintFunction(const Proto* f, int full) 719 { 720 int i,n=f->sizep; 721 PrintHeader(f); 722 PrintCode(f); 723 if (full) PrintDebug(f); 724 for (i=0; i<n; i++) PrintFunction(f->p[i],full); 725 } 726