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
fatal(const char * message)35 static void fatal(const char* message)
36 {
37 fprintf(stderr,"%s: %s\n",progname,message);
38 exit(EXIT_FAILURE);
39 }
40
cannot(const char * what)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
usage(const char * message)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
doargs(int argc,char * argv[])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
reader(lua_State * L,void * ud,size_t * size)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
combine(lua_State * L,int n)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
writer(lua_State * L,const void * p,size_t size,void * u)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
pmain(lua_State * L)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
main(int argc,char * argv[])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
PrintString(const TString * ts)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
PrintConstant(const Proto * f,int i)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
PrintCode(const Proto * f)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
PrintHeader(const Proto * f)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
PrintDebug(const Proto * f)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
PrintFunction(const Proto * f,int full)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 }
433