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| 1 /* |
| 2 ** $Id: luac.c,v 1.69 2011/11/29 17:46:33 lhf Exp $ |
| 3 ** Lua compiler (saves bytecodes to files; also list bytecodes) |
| 4 ** See Copyright Notice in lua.h |
| 5 */ |
| 6 |
| 7 #include <errno.h> |
| 8 #include <stdio.h> |
| 9 #include <stdlib.h> |
| 10 #include <string.h> |
| 11 |
| 12 #define luac_c |
| 13 #define LUA_CORE |
| 14 |
| 15 #include "lua.h" |
| 16 #include "lauxlib.h" |
| 17 |
| 18 #include "lobject.h" |
| 19 #include "lstate.h" |
| 20 #include "lundump.h" |
| 21 |
| 22 static void PrintFunction(const Proto* f, int full); |
| 23 #define luaU_print PrintFunction |
| 24 |
| 25 #define PROGNAME "luac" /* default program name */ |
| 26 #define OUTPUT PROGNAME ".out" /* default output file */ |
| 27 |
| 28 static int listing=0; /* list bytecodes? */ |
| 29 static int dumping=1; /* dump bytecodes? */ |
| 30 static int stripping=0; /* strip debug information? */ |
| 31 static char Output[]={ OUTPUT }; /* default output file name */ |
| 32 static const char* output=Output; /* actual output file name */ |
| 33 static const char* progname=PROGNAME; /* actual program name */ |
| 34 |
| 35 static void fatal(const char* message) |
| 36 { |
| 37 fprintf(stderr,"%s: %s\n",progname,message); |
| 38 exit(EXIT_FAILURE); |
| 39 } |
| 40 |
| 41 static void cannot(const char* what) |
| 42 { |
| 43 fprintf(stderr,"%s: cannot %s %s: %s\n",progname,what,output,strerror(errno)); |
| 44 exit(EXIT_FAILURE); |
| 45 } |
| 46 |
| 47 static void usage(const char* message) |
| 48 { |
| 49 if (*message=='-') |
| 50 fprintf(stderr,"%s: unrecognized option " LUA_QS "\n",progname,message); |
| 51 else |
| 52 fprintf(stderr,"%s: %s\n",progname,message); |
| 53 fprintf(stderr, |
| 54 "usage: %s [options] [filenames]\n" |
| 55 "Available options are:\n" |
| 56 " -l list (use -l -l for full listing)\n" |
| 57 " -o name output to file " LUA_QL("name") " (default is \"%s\")\n" |
| 58 " -p parse only\n" |
| 59 " -s strip debug information\n" |
| 60 " -v show version information\n" |
| 61 " -- stop handling options\n" |
| 62 " - stop handling options and process stdin\n" |
| 63 ,progname,Output); |
| 64 exit(EXIT_FAILURE); |
| 65 } |
| 66 |
| 67 #define IS(s) (strcmp(argv[i],s)==0) |
| 68 |
| 69 static int doargs(int argc, char* argv[]) |
| 70 { |
| 71 int i; |
| 72 int version=0; |
| 73 if (argv[0]!=NULL && *argv[0]!=0) progname=argv[0]; |
| 74 for (i=1; i<argc; i++) |
| 75 { |
| 76 if (*argv[i]!='-') /* end of options; keep it */ |
| 77 break; |
| 78 else if (IS("--")) /* end of options; skip it */ |
| 79 { |
| 80 ++i; |
| 81 if (version) ++version; |
| 82 break; |
| 83 } |
| 84 else if (IS("-")) /* end of options; use stdin */ |
| 85 break; |
| 86 else if (IS("-l")) /* list */ |
| 87 ++listing; |
| 88 else if (IS("-o")) /* output file */ |
| 89 { |
| 90 output=argv[++i]; |
| 91 if (output==NULL || *output==0 || (*output=='-' && output[1]!=0)) |
| 92 usage(LUA_QL("-o") " needs argument"); |
| 93 if (IS("-")) output=NULL; |
| 94 } |
| 95 else if (IS("-p")) /* parse only */ |
| 96 dumping=0; |
| 97 else if (IS("-s")) /* strip debug information */ |
| 98 stripping=1; |
| 99 else if (IS("-v")) /* show version */ |
| 100 ++version; |
| 101 else /* unknown option */ |
| 102 usage(argv[i]); |
| 103 } |
| 104 if (i==argc && (listing || !dumping)) |
| 105 { |
| 106 dumping=0; |
| 107 argv[--i]=Output; |
| 108 } |
| 109 if (version) |
| 110 { |
| 111 printf("%s\n",LUA_COPYRIGHT); |
| 112 if (version==argc-1) exit(EXIT_SUCCESS); |
| 113 } |
| 114 return i; |
| 115 } |
| 116 |
| 117 #define FUNCTION "(function()end)();" |
| 118 |
| 119 static const char* reader(lua_State *L, void *ud, size_t *size) |
| 120 { |
| 121 UNUSED(L); |
| 122 if ((*(int*)ud)--) |
| 123 { |
| 124 *size=sizeof(FUNCTION)-1; |
| 125 return FUNCTION; |
| 126 } |
| 127 else |
| 128 { |
| 129 *size=0; |
| 130 return NULL; |
| 131 } |
| 132 } |
| 133 |
| 134 #define toproto(L,i) getproto(L->top+(i)) |
| 135 |
| 136 static const Proto* combine(lua_State* L, int n) |
| 137 { |
| 138 if (n==1) |
| 139 return toproto(L,-1); |
| 140 else |
| 141 { |
| 142 Proto* f; |
| 143 int i=n; |
| 144 if (lua_load(L,reader,&i,"=(" PROGNAME ")",NULL)!=LUA_OK) fatal(lua_tostring(L
,-1)); |
| 145 f=toproto(L,-1); |
| 146 for (i=0; i<n; i++) |
| 147 { |
| 148 f->p[i]=toproto(L,i-n-1); |
| 149 if (f->p[i]->sizeupvalues>0) f->p[i]->upvalues[0].instack=0; |
| 150 } |
| 151 f->sizelineinfo=0; |
| 152 return f; |
| 153 } |
| 154 } |
| 155 |
| 156 static int writer(lua_State* L, const void* p, size_t size, void* u) |
| 157 { |
| 158 UNUSED(L); |
| 159 return (fwrite(p,size,1,(FILE*)u)!=1) && (size!=0); |
| 160 } |
| 161 |
| 162 static int pmain(lua_State* L) |
| 163 { |
| 164 int argc=(int)lua_tointeger(L,1); |
| 165 char** argv=(char**)lua_touserdata(L,2); |
| 166 const Proto* f; |
| 167 int i; |
| 168 if (!lua_checkstack(L,argc)) fatal("too many input files"); |
| 169 for (i=0; i<argc; i++) |
| 170 { |
| 171 const char* filename=IS("-") ? NULL : argv[i]; |
| 172 if (luaL_loadfile(L,filename)!=LUA_OK) fatal(lua_tostring(L,-1)); |
| 173 } |
| 174 f=combine(L,argc); |
| 175 if (listing) luaU_print(f,listing>1); |
| 176 if (dumping) |
| 177 { |
| 178 FILE* D= (output==NULL) ? stdout : fopen(output,"wb"); |
| 179 if (D==NULL) cannot("open"); |
| 180 lua_lock(L); |
| 181 luaU_dump(L,f,writer,D,stripping); |
| 182 lua_unlock(L); |
| 183 if (ferror(D)) cannot("write"); |
| 184 if (fclose(D)) cannot("close"); |
| 185 } |
| 186 return 0; |
| 187 } |
| 188 |
| 189 int main(int argc, char* argv[]) |
| 190 { |
| 191 lua_State* L; |
| 192 int i=doargs(argc,argv); |
| 193 argc-=i; argv+=i; |
| 194 if (argc<=0) usage("no input files given"); |
| 195 L=luaL_newstate(); |
| 196 if (L==NULL) fatal("cannot create state: not enough memory"); |
| 197 lua_pushcfunction(L,&pmain); |
| 198 lua_pushinteger(L,argc); |
| 199 lua_pushlightuserdata(L,argv); |
| 200 if (lua_pcall(L,2,0,0)!=LUA_OK) fatal(lua_tostring(L,-1)); |
| 201 lua_close(L); |
| 202 return EXIT_SUCCESS; |
| 203 } |
| 204 |
| 205 /* |
| 206 ** $Id: print.c,v 1.68 2011/09/30 10:21:20 lhf Exp $ |
| 207 ** print bytecodes |
| 208 ** See Copyright Notice in lua.h |
| 209 */ |
| 210 |
| 211 #include <ctype.h> |
| 212 #include <stdio.h> |
| 213 |
| 214 #define luac_c |
| 215 #define LUA_CORE |
| 216 |
| 217 #include "ldebug.h" |
| 218 #include "lobject.h" |
| 219 #include "lopcodes.h" |
| 220 |
| 221 #define VOID(p) ((const void*)(p)) |
| 222 |
| 223 static void PrintString(const TString* ts) |
| 224 { |
| 225 const char* s=getstr(ts); |
| 226 size_t i,n=ts->tsv.len; |
| 227 printf("%c",'"'); |
| 228 for (i=0; i<n; i++) |
| 229 { |
| 230 int c=(int)(unsigned char)s[i]; |
| 231 switch (c) |
| 232 { |
| 233 case '"': printf("\\\""); break; |
| 234 case '\\': printf("\\\\"); break; |
| 235 case '\a': printf("\\a"); break; |
| 236 case '\b': printf("\\b"); break; |
| 237 case '\f': printf("\\f"); break; |
| 238 case '\n': printf("\\n"); break; |
| 239 case '\r': printf("\\r"); break; |
| 240 case '\t': printf("\\t"); break; |
| 241 case '\v': printf("\\v"); break; |
| 242 default: if (isprint(c)) |
| 243 printf("%c",c); |
| 244 else |
| 245 printf("\\%03d",c); |
| 246 } |
| 247 } |
| 248 printf("%c",'"'); |
| 249 } |
| 250 |
| 251 static void PrintConstant(const Proto* f, int i) |
| 252 { |
| 253 const TValue* o=&f->k[i]; |
| 254 switch (ttype(o)) |
| 255 { |
| 256 case LUA_TNIL: |
| 257 printf("nil"); |
| 258 break; |
| 259 case LUA_TBOOLEAN: |
| 260 printf(bvalue(o) ? "true" : "false"); |
| 261 break; |
| 262 case LUA_TNUMBER: |
| 263 printf(LUA_NUMBER_FMT,nvalue(o)); |
| 264 break; |
| 265 case LUA_TSTRING: |
| 266 PrintString(rawtsvalue(o)); |
| 267 break; |
| 268 default: /* cannot happen */ |
| 269 printf("? type=%d",ttype(o)); |
| 270 break; |
| 271 } |
| 272 } |
| 273 |
| 274 #define UPVALNAME(x) ((f->upvalues[x].name) ? getstr(f->upvalues[x].name) : "-") |
| 275 #define MYK(x) (-1-(x)) |
| 276 |
| 277 static void PrintCode(const Proto* f) |
| 278 { |
| 279 const Instruction* code=f->code; |
| 280 int pc,n=f->sizecode; |
| 281 for (pc=0; pc<n; pc++) |
| 282 { |
| 283 Instruction i=code[pc]; |
| 284 OpCode o=GET_OPCODE(i); |
| 285 int a=GETARG_A(i); |
| 286 int b=GETARG_B(i); |
| 287 int c=GETARG_C(i); |
| 288 int ax=GETARG_Ax(i); |
| 289 int bx=GETARG_Bx(i); |
| 290 int sbx=GETARG_sBx(i); |
| 291 int line=getfuncline(f,pc); |
| 292 printf("\t%d\t",pc+1); |
| 293 if (line>0) printf("[%d]\t",line); else printf("[-]\t"); |
| 294 printf("%-9s\t",luaP_opnames[o]); |
| 295 switch (getOpMode(o)) |
| 296 { |
| 297 case iABC: |
| 298 printf("%d",a); |
| 299 if (getBMode(o)!=OpArgN) printf(" %d",ISK(b) ? (MYK(INDEXK(b))) : b); |
| 300 if (getCMode(o)!=OpArgN) printf(" %d",ISK(c) ? (MYK(INDEXK(c))) : c); |
| 301 break; |
| 302 case iABx: |
| 303 printf("%d",a); |
| 304 if (getBMode(o)==OpArgK) printf(" %d",MYK(bx)); |
| 305 if (getBMode(o)==OpArgU) printf(" %d",bx); |
| 306 break; |
| 307 case iAsBx: |
| 308 printf("%d %d",a,sbx); |
| 309 break; |
| 310 case iAx: |
| 311 printf("%d",MYK(ax)); |
| 312 break; |
| 313 } |
| 314 switch (o) |
| 315 { |
| 316 case OP_LOADK: |
| 317 printf("\t; "); PrintConstant(f,bx); |
| 318 break; |
| 319 case OP_GETUPVAL: |
| 320 case OP_SETUPVAL: |
| 321 printf("\t; %s",UPVALNAME(b)); |
| 322 break; |
| 323 case OP_GETTABUP: |
| 324 printf("\t; %s",UPVALNAME(b)); |
| 325 if (ISK(c)) { printf(" "); PrintConstant(f,INDEXK(c)); } |
| 326 break; |
| 327 case OP_SETTABUP: |
| 328 printf("\t; %s",UPVALNAME(a)); |
| 329 if (ISK(b)) { printf(" "); PrintConstant(f,INDEXK(b)); } |
| 330 if (ISK(c)) { printf(" "); PrintConstant(f,INDEXK(c)); } |
| 331 break; |
| 332 case OP_GETTABLE: |
| 333 case OP_SELF: |
| 334 if (ISK(c)) { printf("\t; "); PrintConstant(f,INDEXK(c)); } |
| 335 break; |
| 336 case OP_SETTABLE: |
| 337 case OP_ADD: |
| 338 case OP_SUB: |
| 339 case OP_MUL: |
| 340 case OP_DIV: |
| 341 case OP_POW: |
| 342 case OP_EQ: |
| 343 case OP_LT: |
| 344 case OP_LE: |
| 345 if (ISK(b) || ISK(c)) |
| 346 { |
| 347 printf("\t; "); |
| 348 if (ISK(b)) PrintConstant(f,INDEXK(b)); else printf("-"); |
| 349 printf(" "); |
| 350 if (ISK(c)) PrintConstant(f,INDEXK(c)); else printf("-"); |
| 351 } |
| 352 break; |
| 353 case OP_JMP: |
| 354 case OP_FORLOOP: |
| 355 case OP_FORPREP: |
| 356 case OP_TFORLOOP: |
| 357 printf("\t; to %d",sbx+pc+2); |
| 358 break; |
| 359 case OP_CLOSURE: |
| 360 printf("\t; %p",VOID(f->p[bx])); |
| 361 break; |
| 362 case OP_SETLIST: |
| 363 if (c==0) printf("\t; %d",(int)code[++pc]); else printf("\t; %d",c); |
| 364 break; |
| 365 case OP_EXTRAARG: |
| 366 printf("\t; "); PrintConstant(f,ax); |
| 367 break; |
| 368 default: |
| 369 break; |
| 370 } |
| 371 printf("\n"); |
| 372 } |
| 373 } |
| 374 |
| 375 #define SS(x) ((x==1)?"":"s") |
| 376 #define S(x) (int)(x),SS(x) |
| 377 |
| 378 static void PrintHeader(const Proto* f) |
| 379 { |
| 380 const char* s=f->source ? getstr(f->source) : "=?"; |
| 381 if (*s=='@' || *s=='=') |
| 382 s++; |
| 383 else if (*s==LUA_SIGNATURE[0]) |
| 384 s="(bstring)"; |
| 385 else |
| 386 s="(string)"; |
| 387 printf("\n%s <%s:%d,%d> (%d instruction%s at %p)\n", |
| 388 (f->linedefined==0)?"main":"function",s, |
| 389 f->linedefined,f->lastlinedefined, |
| 390 S(f->sizecode),VOID(f)); |
| 391 printf("%d%s param%s, %d slot%s, %d upvalue%s, ", |
| 392 (int)(f->numparams),f->is_vararg?"+":"",SS(f->numparams), |
| 393 S(f->maxstacksize),S(f->sizeupvalues)); |
| 394 printf("%d local%s, %d constant%s, %d function%s\n", |
| 395 S(f->sizelocvars),S(f->sizek),S(f->sizep)); |
| 396 } |
| 397 |
| 398 static void PrintDebug(const Proto* f) |
| 399 { |
| 400 int i,n; |
| 401 n=f->sizek; |
| 402 printf("constants (%d) for %p:\n",n,VOID(f)); |
| 403 for (i=0; i<n; i++) |
| 404 { |
| 405 printf("\t%d\t",i+1); |
| 406 PrintConstant(f,i); |
| 407 printf("\n"); |
| 408 } |
| 409 n=f->sizelocvars; |
| 410 printf("locals (%d) for %p:\n",n,VOID(f)); |
| 411 for (i=0; i<n; i++) |
| 412 { |
| 413 printf("\t%d\t%s\t%d\t%d\n", |
| 414 i,getstr(f->locvars[i].varname),f->locvars[i].startpc+1,f->locvars[i].endpc+1)
; |
| 415 } |
| 416 n=f->sizeupvalues; |
| 417 printf("upvalues (%d) for %p:\n",n,VOID(f)); |
| 418 for (i=0; i<n; i++) |
| 419 { |
| 420 printf("\t%d\t%s\t%d\t%d\n", |
| 421 i,UPVALNAME(i),f->upvalues[i].instack,f->upvalues[i].idx); |
| 422 } |
| 423 } |
| 424 |
| 425 static void PrintFunction(const Proto* f, int full) |
| 426 { |
| 427 int i,n=f->sizep; |
| 428 PrintHeader(f); |
| 429 PrintCode(f); |
| 430 if (full) PrintDebug(f); |
| 431 for (i=0; i<n; i++) PrintFunction(f->p[i],full); |
| 432 } |
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