emscripten/tests/lua/src/luac.c at universal-python · JavaScriptIOT/emscripten · GitHub

History

432 lines (400 loc) · 9.73 KB

Raw

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

346

347

348

349

350

351

352

353

354

355

356

357

358

359

360

361

362

363

364

365

366

367

368

369

370

371

372

373

374

375

376

377

378

379

380

381

382

383

384

385

386

387

388

389

390

391

392

393

394

395

396

397

398

399

400

401

402

403

404

405

406

407

408

409

410

411

412

413

414

415

416

417

418

419

420

421

422

423

424

425

426

427

428

429

430

431

432

** $Id: luac.c,v 1.69 2011/11/29 17:46:33 lhf Exp $

** Lua compiler (saves bytecodes to files; also list bytecodes)

** See Copyright Notice in lua.h

#include <errno.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#define luac_c

#define LUA_CORE

#include "lua.h"

#include "lauxlib.h"

#include "lobject.h"

#include "lstate.h"

#include "lundump.h"

static void PrintFunction(const Proto* f, int full);

#define luaU_print PrintFunction

#define PROGNAME "luac" /* default program name */

#define OUTPUT PROGNAME ".out" /* default output file */

static int listing=0; /* list bytecodes? */

static int dumping=1; /* dump bytecodes? */

static int stripping=0; /* strip debug information? */

static char Output[]={ OUTPUT }; /* default output file name */

static const char* output=Output; /* actual output file name */

static const char* progname=PROGNAME; /* actual program name */

static void fatal(const char* message)

{

fprintf(stderr,"%s: %s\n",progname,message);

exit(EXIT_FAILURE);

}

static void cannot(const char* what)

{

fprintf(stderr,"%s: cannot %s %s: %s\n",progname,what,output,strerror(errno));

exit(EXIT_FAILURE);

}

static void usage(const char* message)

{

if (*message=='-')

fprintf(stderr,"%s: unrecognized option " LUA_QS "\n",progname,message);

else

fprintf(stderr,"%s: %s\n",progname,message);

fprintf(stderr,

"usage: %s [options] [filenames]\n"

"Available options are:\n"

" -l list (use -l -l for full listing)\n"

" -o name output to file " LUA_QL("name") " (default is \"%s\")\n"

" -p parse only\n"

" -s strip debug information\n"

" -v show version information\n"

" -- stop handling options\n"

" - stop handling options and process stdin\n"

,progname,Output);

exit(EXIT_FAILURE);

}

#define IS(s) (strcmp(argv[i],s)==0)

static int doargs(int argc, char* argv[])

{

int i;

int version=0;

if (argv[0]!=NULL && *argv[0]!=0) progname=argv[0];

for (i=1; i<argc; i++)

{

if (*argv[i]!='-') /* end of options; keep it */

break;

else if (IS("--")) /* end of options; skip it */

{

++i;

if (version) ++version;

break;

}

else if (IS("-")) /* end of options; use stdin */

break;

else if (IS("-l")) /* list */

++listing;

else if (IS("-o")) /* output file */

{

output=argv[++i];

if (output==NULL || *output==0 || (*output=='-' && output[1]!=0))

usage(LUA_QL("-o") " needs argument");

if (IS("-")) output=NULL;

}

else if (IS("-p")) /* parse only */

dumping=0;

else if (IS("-s")) /* strip debug information */

stripping=1;

else if (IS("-v")) /* show version */

++version;

else /* unknown option */

usage(argv[i]);

}

if (i==argc && (listing || !dumping))

{

dumping=0;

argv[--i]=Output;

}

if (version)

{

printf("%s\n",LUA_COPYRIGHT);

if (version==argc-1) exit(EXIT_SUCCESS);

}

return i;

}

#define FUNCTION "(function()end)();"

static const char* reader(lua_State *L, void *ud, size_t *size)

{

UNUSED(L);

if ((*(int*)ud)--)

{

*size=sizeof(FUNCTION)-1;

return FUNCTION;

}

else

{

*size=0;

return NULL;

}

#define toproto(L,i) getproto(L->top+(i))

static const Proto* combine(lua_State* L, int n)

{

if (n==1)

return toproto(L,-1);

else

{

Proto* f;

int i=n;

if (lua_load(L,reader,&i,"=(" PROGNAME ")",NULL)!=LUA_OK) fatal(lua_tostring(L,-1));

f=toproto(L,-1);

for (i=0; i<n; i++)

{

f->p[i]=toproto(L,i-n-1);

if (f->p[i]->sizeupvalues>0) f->p[i]->upvalues[0].instack=0;

}

f->sizelineinfo=0;

return f;

}

static int writer(lua_State* L, const void* p, size_t size, void* u)

{

UNUSED(L);

return (fwrite(p,size,1,(FILE*)u)!=1) && (size!=0);

}

static int pmain(lua_State* L)

{

int argc=(int)lua_tointeger(L,1);

char** argv=(char**)lua_touserdata(L,2);

const Proto* f;

int i;

if (!lua_checkstack(L,argc)) fatal("too many input files");

for (i=0; i<argc; i++)

{

const char* filename=IS("-") ? NULL : argv[i];

if (luaL_loadfile(L,filename)!=LUA_OK) fatal(lua_tostring(L,-1));

}

f=combine(L,argc);

if (listing) luaU_print(f,listing>1);

if (dumping)

{

FILE* D= (output==NULL) ? stdout : fopen(output,"wb");

if (D==NULL) cannot("open");

lua_lock(L);

luaU_dump(L,f,writer,D,stripping);

lua_unlock(L);

if (ferror(D)) cannot("write");

if (fclose(D)) cannot("close");

}

return 0;

}

int main(int argc, char* argv[])

{

lua_State* L;

int i=doargs(argc,argv);

argc-=i; argv+=i;

if (argc<=0) usage("no input files given");

L=luaL_newstate();

if (L==NULL) fatal("cannot create state: not enough memory");

lua_pushcfunction(L,&pmain);

lua_pushinteger(L,argc);

lua_pushlightuserdata(L,argv);

if (lua_pcall(L,2,0,0)!=LUA_OK) fatal(lua_tostring(L,-1));

lua_close(L);

return EXIT_SUCCESS;

}

** $Id: print.c,v 1.68 2011/09/30 10:21:20 lhf Exp $

** print bytecodes

** See Copyright Notice in lua.h

#include <ctype.h>

#include <stdio.h>

#define luac_c

#define LUA_CORE

#include "ldebug.h"

#include "lobject.h"

#include "lopcodes.h"

#define VOID(p) ((const void*)(p))

static void PrintString(const TString* ts)

{

const char* s=getstr(ts);

size_t i,n=ts->tsv.len;

printf("%c",'"');

for (i=0; i<n; i++)

{

int c=(int)(unsigned char)s[i];

switch (c)

{

case '"': printf("\\\""); break;

case '\\': printf("\\\\"); break;

case '\a': printf("\\a"); break;

case '\b': printf("\\b"); break;

case '\f': printf("\\f"); break;

case '\n': printf("\\n"); break;

case '\r': printf("\\r"); break;

case '\t': printf("\\t"); break;

case '\v': printf("\\v"); break;

default: if (isprint(c))

printf("%c",c);

else

printf("\\%03d",c);

}

printf("%c",'"');

}

static void PrintConstant(const Proto* f, int i)

{

const TValue* o=&f->k[i];

switch (ttype(o))

{

case LUA_TNIL:

printf("nil");

break;

case LUA_TBOOLEAN:

printf(bvalue(o) ? "true" : "false");

break;

case LUA_TNUMBER:

printf(LUA_NUMBER_FMT,nvalue(o));

break;

case LUA_TSTRING:

PrintString(rawtsvalue(o));

break;

default: /* cannot happen */

printf("? type=%d",ttype(o));

break;

}

#define UPVALNAME(x) ((f->upvalues[x].name) ? getstr(f->upvalues[x].name) : "-")

#define MYK(x) (-1-(x))

static void PrintCode(const Proto* f)

{

const Instruction* code=f->code;

int pc,n=f->sizecode;

for (pc=0; pc<n; pc++)

{

Instruction i=code[pc];

OpCode o=GET_OPCODE(i);

int a=GETARG_A(i);

int b=GETARG_B(i);

int c=GETARG_C(i);

int ax=GETARG_Ax(i);

int bx=GETARG_Bx(i);

int sbx=GETARG_sBx(i);

int line=getfuncline(f,pc);

printf("\t%d\t",pc+1);

if (line>0) printf("[%d]\t",line); else printf("[-]\t");

printf("%-9s\t",luaP_opnames[o]);

switch (getOpMode(o))

{

case iABC:

printf("%d",a);

if (getBMode(o)!=OpArgN) printf(" %d",ISK(b) ? (MYK(INDEXK(b))) : b);

if (getCMode(o)!=OpArgN) printf(" %d",ISK(c) ? (MYK(INDEXK(c))) : c);

break;

case iABx:

printf("%d",a);

if (getBMode(o)==OpArgK) printf(" %d",MYK(bx));

if (getBMode(o)==OpArgU) printf(" %d",bx);

break;

case iAsBx:

printf("%d %d",a,sbx);

break;

case iAx:

printf("%d",MYK(ax));

break;

}

switch (o)

{

case OP_LOADK:

printf("\t; "); PrintConstant(f,bx);

break;

case OP_GETUPVAL:

case OP_SETUPVAL:

printf("\t; %s",UPVALNAME(b));

break;

case OP_GETTABUP:

printf("\t; %s",UPVALNAME(b));

if (ISK(c)) { printf(" "); PrintConstant(f,INDEXK(c)); }

break;

case OP_SETTABUP:

printf("\t; %s",UPVALNAME(a));

if (ISK(b)) { printf(" "); PrintConstant(f,INDEXK(b)); }

if (ISK(c)) { printf(" "); PrintConstant(f,INDEXK(c)); }

break;

case OP_GETTABLE:

case OP_SELF:

if (ISK(c)) { printf("\t; "); PrintConstant(f,INDEXK(c)); }

break;

case OP_SETTABLE:

case OP_ADD:

case OP_SUB:

case OP_MUL:

case OP_DIV:

case OP_POW:

case OP_EQ:

case OP_LT:

case OP_LE:

if (ISK(b) || ISK(c))

{

printf("\t; ");

if (ISK(b)) PrintConstant(f,INDEXK(b)); else printf("-");

printf(" ");

if (ISK(c)) PrintConstant(f,INDEXK(c)); else printf("-");

}

break;

case OP_JMP:

case OP_FORLOOP:

case OP_FORPREP:

case OP_TFORLOOP:

printf("\t; to %d",sbx+pc+2);

break;

case OP_CLOSURE:

printf("\t; %p",VOID(f->p[bx]));

break;

case OP_SETLIST:

if (c==0) printf("\t; %d",(int)code[++pc]); else printf("\t; %d",c);

break;

case OP_EXTRAARG:

printf("\t; "); PrintConstant(f,ax);

break;

default:

break;

}

printf("\n");

}

#define SS(x) ((x==1)?"":"s")

#define S(x) (int)(x),SS(x)

static void PrintHeader(const Proto* f)

{

const char* s=f->source ? getstr(f->source) : "=?";

if (*s=='@' || *s=='=')

s++;

else if (*s==LUA_SIGNATURE[0])

s="(bstring)";

else

s="(string)";

printf("\n%s <%s:%d,%d> (%d instruction%s at %p)\n",

(f->linedefined==0)?"main":"function",s,

f->linedefined,f->lastlinedefined,

S(f->sizecode),VOID(f));

printf("%d%s param%s, %d slot%s, %d upvalue%s, ",

(int)(f->numparams),f->is_vararg?"+":"",SS(f->numparams),

S(f->maxstacksize),S(f->sizeupvalues));

printf("%d local%s, %d constant%s, %d function%s\n",

S(f->sizelocvars),S(f->sizek),S(f->sizep));

}

static void PrintDebug(const Proto* f)

{

int i,n;

n=f->sizek;

printf("constants (%d) for %p:\n",n,VOID(f));

for (i=0; i<n; i++)

{

printf("\t%d\t",i+1);

PrintConstant(f,i);

printf("\n");

}

n=f->sizelocvars;

printf("locals (%d) for %p:\n",n,VOID(f));

for (i=0; i<n; i++)

{

printf("\t%d\t%s\t%d\t%d\n",

i,getstr(f->locvars[i].varname),f->locvars[i].startpc+1,f->locvars[i].endpc+1);

}

n=f->sizeupvalues;

printf("upvalues (%d) for %p:\n",n,VOID(f));

for (i=0; i<n; i++)

{

printf("\t%d\t%s\t%d\t%d\n",

i,UPVALNAME(i),f->upvalues[i].instack,f->upvalues[i].idx);

}

static void PrintFunction(const Proto* f, int full)

{

int i,n=f->sizep;

PrintHeader(f);

PrintCode(f);

if (full) PrintDebug(f);

for (i=0; i<n; i++) PrintFunction(f->p[i],full);

}

emscripten/tests/lua/src/luac.c at universal-python · JavaScriptIOT/emscripten · GitHub

Uh oh!

Expand file tree

Breadcrumbs

luac.c

Latest commit

History

Breadcrumbs

luac.c

File metadata and controls