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comparison luabuild/lua-5.2.1/src/luac.c @ 1087:07b68c71b89c
<GreyKnight> (cd luabuild; tar -xvf lua-5.2.1.tar.gz)
author | HackBot |
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date | Fri, 14 Dec 2012 20:33:11 +0000 |
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1086:64bb613b689c | 1087:07b68c71b89c |
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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 } |