git.zerfleddert.de Git - proxmark3-svn/blob - liblua/luac.c

   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 }