src/native/native.c

   1 /* native/native.c - table of native functions
   2
   3    Copyright (C) 1996-2005 R. Grafl, A. Krall, C. Kruegel, C. Oates,
   4    R. Obermaisser, M. Platter, M. Probst, S. Ring, E. Steiner,
   5    C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich, J. Wenninger,
   6    Institut f. Computersprachen - TU Wien
   7
   8    This file is part of CACAO.
   9
  10    This program is free software; you can redistribute it and/or
  11    modify it under the terms of the GNU General Public License as
  12    published by the Free Software Foundation; either version 2, or (at
  13    your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful, but
  16    WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18    General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  23    02111-1307, USA.
  24
  25    Contact: cacao@complang.tuwien.ac.at
  26
  27    Authors: Reinhard Grafl
  28             Roman Obermaisser
  29             Andreas Krall
  30
  31    The .hh files created with the header file generator are all
  32    included here as are the C functions implementing these methods.
  33
  34    $Id: native.c 1875 2005-01-21 09:37:33Z twisti $
  35
  36 */
  37
  38
  39 #include <stdlib.h>
  40 #include <unistd.h>
  41 #include <time.h>
  42 #include <math.h>
  43 #include <string.h>
  44 #include <assert.h>
  45 #include <sys/time.h>
  46 #include <utime.h>
  47
  48 /* Include files for IO functions */
  49
  50 #include <fcntl.h>
  51 #include <dirent.h>
  52 #include <sys/types.h>
  53 #ifdef _OSF_SOURCE
  54 #include <sys/mode.h>
  55 #endif
  56 #include <sys/stat.h>
  57
  58 #include "config.h"
  59 #include "mm/memory.h"
  60 #include "native/jni.h"
  61 #include "native/native.h"
  62 #include "native/include/java_lang_Throwable.h"
  63 #include "toolbox/logging.h"
  64 #include "vm/builtin.h"
  65 #include "vm/exceptions.h"
  66 #include "vm/global.h"
  67 #include "vm/loader.h"
  68 #include "vm/options.h"
  69 #include "vm/tables.h"
  70 #include "vm/jit/asmpart.h"
  71 #include "vm/jit/jit.h"
  72
  73
  74 /* include table of native functions ******************************************/
  75
  76 /* XXX quick hack? */
  77 #if defined(USE_GTK)
  78 #include "native/vm/GtkComponentPeer.c"
  79 #include "native/vm/GtkScrollPanePeer.c"
  80 #include "native/vm/GtkFileDialogPeer.c"
  81 #endif
  82
  83 #include "nativetable.inc"
  84
  85
  86 /* for java-string to char conversion */
  87 #define MAXSTRINGSIZE 1000
  88
  89
  90 /******************** systemclasses required for native methods ***************/
  91
  92 classinfo *class_java_lang_Class;
  93 classinfo *class_java_lang_VMClass;
  94 classinfo *class_java_lang_System;
  95 classinfo *class_java_lang_ClassLoader;
  96 classinfo *class_gnu_java_lang_SystemClassLoader;
  97 classinfo *class_java_lang_SecurityManager;
  98 classinfo *class_java_lang_Double;
  99 classinfo *class_java_lang_Float;
 100 classinfo *class_java_lang_Long;
 101 classinfo *class_java_lang_Byte;
 102 classinfo *class_java_lang_Short;
 103 classinfo *class_java_lang_Boolean;
 104 classinfo *class_java_lang_Void;
 105 classinfo *class_java_lang_Character;
 106 classinfo *class_java_lang_Integer;
 107
 108 methodinfo *method_vmclass_init;
 109
 110
 111 /* the system classloader object */
 112 struct java_lang_ClassLoader *SystemClassLoader = NULL;
 113
 114 /* for raising exceptions from native methods */
 115 #if !defined(USE_THREADS) || !defined(NATIVE_THREADS)
 116 java_objectheader* _exceptionptr = NULL;
 117 #endif
 118
 119 /************* use classinfo structure as java.lang.Class object **************/
 120
 121 void use_class_as_object(classinfo *c)
 122 {
 123         if (!c->classvftbl) {
 124                 /* is the class loaded */
 125                 if (!c->loaded)
 126                         if (!class_load(c))
 127                                 panic("Class could not be loaded in use_class_as_object");
 128                 /* is the class linked */
 129                 if (!c->linked)
 130                         if (!class_link(c))
 131                                 panic("Class could not be linked in use_class_as_object");
 132
 133                 /*if (class_java_lang_Class ==0) panic("java/lang/Class not loaded in use_class_as_object");
 134                 if (class_java_lang_Class->vftbl ==0) panic ("vftbl == 0 in use_class_as_object");*/
 135                 c->header.vftbl = class_java_lang_Class->vftbl;
 136                 c->classvftbl = true;
 137                 /*printf("use_class_as_object: %s\n",c->name->text);*/
 138         }
 139
 140 }
 141
 142
 143 /************************** tables for methods ********************************/
 144
 145 #undef JOWENN_DEBUG
 146 #undef JOWENN_DEBUG1
 147
 148 #ifdef STATIC_CLASSPATH
 149 #define NATIVETABLESIZE  (sizeof(nativetable)/sizeof(struct nativeref))
 150
 151 /* table for fast string comparison */
 152 static nativecompref nativecomptable[NATIVETABLESIZE];
 153
 154 /* string comparsion table initialized */
 155 static bool nativecompdone = false;
 156 #endif
 157
 158
 159 /* XXX don't define this in a header file!!! */
 160
 161 static struct nativeCall nativeCalls[] =
 162 {
 163 #include "nativecalls.inc"
 164 };
 165
 166 #define NATIVECALLSSIZE    (sizeof(nativeCalls) / sizeof(struct nativeCall))
 167
 168 struct nativeCompCall nativeCompCalls[NATIVECALLSSIZE];
 169
 170 /******************************************************************************/
 171
 172 /**include "natcalls.h" **/
 173
 174
 175 /*********************** function: native_loadclasses **************************
 176
 177         load classes required for native methods
 178
 179 *******************************************************************************/
 180
 181 void native_loadclasses()
 182 {
 183         static int classesLoaded = 0; /*temporary hack JoWenn*/
 184         void *p;
 185
 186         if (classesLoaded)
 187                 return;
 188
 189         classesLoaded = 1;
 190
 191 #if !defined(STATIC_CLASSPATH)
 192         /* We need to access the dummy native table, not only to remove a warning */
 193         /* but to be sure that the table is not optimized away (gcc does this     */
 194         /* since 3.4).                                                            */
 195         p = &dummynativetable;
 196 #endif
 197
 198         class_java_lang_Cloneable =
 199                 class_new(utf_new_char("java/lang/Cloneable"));
 200         class_load(class_java_lang_Cloneable);
 201         class_link(class_java_lang_Cloneable);
 202
 203         class_java_lang_Class =
 204                 class_new(utf_new_char("java/lang/Class"));
 205         class_load(class_java_lang_Class);
 206         class_link(class_java_lang_Class);
 207
 208         class_java_lang_VMClass =
 209                 class_new(utf_new_char("java/lang/VMClass"));
 210         class_load(class_java_lang_VMClass);
 211         class_link(class_java_lang_VMClass);
 212
 213         class_java_lang_ClassLoader =
 214                 class_new(utf_new_char("java/lang/ClassLoader"));
 215         class_load(class_java_lang_ClassLoader);
 216         class_link(class_java_lang_ClassLoader);
 217
 218         /* load classes for wrapping primitive types */
 219         class_java_lang_Double = class_new(utf_new_char("java/lang/Double"));
 220         class_load(class_java_lang_Double);
 221         class_link(class_java_lang_Double);
 222
 223         class_java_lang_Float = class_new(utf_new_char("java/lang/Float"));
 224         class_load(class_java_lang_Float);
 225         class_link(class_java_lang_Float);
 226
 227         class_java_lang_Character =     class_new(utf_new_char("java/lang/Character"));
 228         class_load(class_java_lang_Character);
 229         class_link(class_java_lang_Character);
 230
 231         class_java_lang_Integer = class_new(utf_new_char("java/lang/Integer"));
 232         class_load(class_java_lang_Integer);
 233         class_link(class_java_lang_Integer);
 234
 235         class_java_lang_Long = class_new(utf_new_char("java/lang/Long"));
 236         class_load(class_java_lang_Long);
 237         class_link(class_java_lang_Long);
 238
 239         class_java_lang_Byte = class_new(utf_new_char("java/lang/Byte"));
 240         class_load(class_java_lang_Byte);
 241         class_link(class_java_lang_Byte);
 242
 243         class_java_lang_Short = class_new(utf_new_char("java/lang/Short"));
 244         class_load(class_java_lang_Short);
 245         class_link(class_java_lang_Short);
 246
 247         class_java_lang_Boolean = class_new(utf_new_char("java/lang/Boolean"));
 248         class_load(class_java_lang_Boolean);
 249         class_link(class_java_lang_Boolean);
 250
 251         class_java_lang_Void = class_new(utf_new_char("java/lang/Void"));
 252         class_load(class_java_lang_Void);
 253         class_link(class_java_lang_Void);
 254 }
 255
 256
 257 /*****************************************************************************
 258
 259         create systemclassloader object and initialize instance fields
 260
 261 ******************************************************************************/
 262
 263 void init_systemclassloader()
 264 {
 265         if (!SystemClassLoader) {
 266                 native_loadclasses();
 267
 268                 /* create object and call initializer */
 269                 SystemClassLoader = (java_lang_ClassLoader *) native_new_and_init(class_new(utf_new_char("gnu/java/lang/SystemClassLoader")));
 270
 271                 /* systemclassloader has no parent */
 272                 SystemClassLoader->parent      = NULL;
 273                 SystemClassLoader->initialized = true;
 274         }
 275 }
 276
 277
 278 /*********************** Function: native_findfunction *************************
 279
 280         Looks up a method (must have the same class name, method name, descriptor
 281         and 'static'ness) and returns a function pointer to it.
 282         Returns: function pointer or NULL (if there is no such method)
 283
 284         Remark: For faster operation, the names/descriptors are converted from C
 285                 strings to Unicode the first time this function is called.
 286
 287 *******************************************************************************/
 288
 289 functionptr native_findfunction(utf *cname, utf *mname,
 290                                                                 utf *desc, bool isstatic)
 291 {
 292 #ifdef STATIC_CLASSPATH
 293         int i;
 294         /* entry of table for fast string comparison */
 295         struct nativecompref *n;
 296         /* for warning message if no function is found */
 297         char *buffer;
 298         int buffer_len;
 299
 300         isstatic = isstatic ? true : false;
 301
 302         if (!nativecompdone) {
 303                 for (i = 0; i < NATIVETABLESIZE; i++) {
 304                         nativecomptable[i].classname  =
 305                                 utf_new_char(nativetable[i].classname);
 306                         nativecomptable[i].methodname =
 307                                 utf_new_char(nativetable[i].methodname);
 308                         nativecomptable[i].descriptor =
 309                                 utf_new_char(nativetable[i].descriptor);
 310                         nativecomptable[i].isstatic   =
 311                                 nativetable[i].isstatic;
 312                         nativecomptable[i].func       =
 313                                 nativetable[i].func;
 314                 }
 315                 nativecompdone = true;
 316         }
 317
 318 #ifdef JOWENN_DEBUG
 319         buffer_len =
 320                 utf_strlen(cname) + utf_strlen(mname) + utf_strlen(desc) + 64;
 321
 322         buffer = MNEW(char, buffer_len);
 323
 324         strcpy(buffer, "searching matching function in native table:");
 325         utf_sprint(buffer+strlen(buffer), mname);
 326         strcpy(buffer+strlen(buffer), ": ");
 327         utf_sprint(buffer+strlen(buffer), desc);
 328         strcpy(buffer+strlen(buffer), " for class ");
 329         utf_sprint(buffer+strlen(buffer), cname);
 330
 331         log_text(buffer);
 332
 333         MFREE(buffer, char, buffer_len);
 334 #endif
 335
 336         for (i = 0; i < NATIVETABLESIZE; i++) {
 337                 n = &(nativecomptable[i]);
 338
 339                 if (cname == n->classname && mname == n->methodname &&
 340                     desc == n->descriptor && isstatic == n->isstatic)
 341                         return n->func;
 342 #ifdef JOWENN_DEBUG
 343                         else {
 344                                 if (cname == n->classname && mname == n->methodname )  log_text("static and descriptor mismatch");
 345
 346                                 else {
 347                                         buffer_len =
 348                                           utf_strlen(n->classname) + utf_strlen(n->methodname) + utf_strlen(n->descriptor) + 64;
 349
 350                                         buffer = MNEW(char, buffer_len);
 351
 352                                         strcpy(buffer, "comparing with:");
 353                                         utf_sprint(buffer+strlen(buffer), n->methodname);
 354                                         strcpy (buffer+strlen(buffer), ": ");
 355                                         utf_sprint(buffer+strlen(buffer), n->descriptor);
 356                                         strcpy(buffer+strlen(buffer), " for class ");
 357                                         utf_sprint(buffer+strlen(buffer), n->classname);
 358
 359                                         log_text(buffer);
 360
 361                                         MFREE(buffer, char, buffer_len);
 362                                 }
 363                         }
 364 #endif
 365         }
 366
 367
 368         /* no function was found, display warning */
 369
 370         buffer_len =
 371                 utf_strlen(cname) + utf_strlen(mname) + utf_strlen(desc) + 64;
 372
 373         buffer = MNEW(char, buffer_len);
 374
 375         strcpy(buffer, "warning: native function ");
 376         utf_sprint(buffer + strlen(buffer), mname);
 377         strcpy(buffer + strlen(buffer), ": ");
 378         utf_sprint(buffer + strlen(buffer), desc);
 379         strcpy(buffer + strlen(buffer), " not found in class ");
 380         utf_sprint(buffer + strlen(buffer), cname);
 381
 382         log_text(buffer);
 383
 384         MFREE(buffer, char, buffer_len);
 385
 386 /*      exit(1); */
 387
 388         /* keep compiler happy */
 389         return NULL;
 390 #else
 391 /* dynamic classpath */
 392   return 0;
 393 #endif
 394 }
 395
 396
 397 /********************** function: javastring_new *******************************
 398
 399         creates a new object of type java/lang/String with the text of
 400         the specified utf8-string
 401
 402         return: pointer to the string or NULL if memory is exhausted.
 403
 404 *******************************************************************************/
 405
 406 java_lang_String *javastring_new(utf *u)
 407 {
 408         char *utf_ptr;                  /* current utf character in utf string    */
 409         u4 utflength;                   /* length of utf-string if uncompressed   */
 410         java_lang_String *s;                /* result-string                          */
 411         java_chararray *a;
 412         s4 i;
 413
 414         if (!u) {
 415                 *exceptionptr = new_nullpointerexception();
 416                 return NULL;
 417         }
 418
 419         utf_ptr = u->text;
 420         utflength = utf_strlen(u);
 421
 422         s = (java_lang_String *) builtin_new(class_java_lang_String);
 423         a = builtin_newarray_char(utflength);
 424
 425         /* javastring or character-array could not be created */
 426         if (!a || !s)
 427                 return NULL;
 428
 429         /* decompress utf-string */
 430         for (i = 0; i < utflength; i++)
 431                 a->data[i] = utf_nextu2(&utf_ptr);
 432
 433         /* set fields of the javastring-object */
 434         s->value  = a;
 435         s->offset = 0;
 436         s->count  = utflength;
 437
 438         return s;
 439 }
 440
 441
 442 /********************** function: javastring_new_char **************************
 443
 444         creates a new java/lang/String object which contains the convertet
 445         C-string passed via text.
 446
 447         return: the object pointer or NULL if memory is exhausted.
 448
 449 *******************************************************************************/
 450
 451 java_lang_String *javastring_new_char(const char *text)
 452 {
 453         s4 i;
 454         s4 len;                /* length of the string */
 455         java_lang_String *s;   /* result-string */
 456         java_chararray *a;
 457
 458         if (!text) {
 459                 *exceptionptr = new_nullpointerexception();
 460                 return NULL;
 461         }
 462
 463         len = strlen(text);
 464
 465         s = (java_lang_String *) builtin_new(class_java_lang_String);
 466         a = builtin_newarray_char(len);
 467
 468         /* javastring or character-array could not be created */
 469         if (!a || !s)
 470                 return NULL;
 471
 472         /* copy text */
 473         for (i = 0; i < len; i++)
 474                 a->data[i] = text[i];
 475
 476         /* set fields of the javastring-object */
 477         s->value  = a;
 478         s->offset = 0;
 479         s->count  = len;
 480
 481         return s;
 482 }
 483
 484
 485 /************************* function javastring_tochar **************************
 486
 487         converts a Java string into a C string.
 488
 489         return: pointer to C string
 490
 491         Caution: every call of this function overwrites the previous string !!!
 492
 493 *******************************************************************************/
 494
 495 static char stringbuffer[MAXSTRINGSIZE];
 496
 497 char *javastring_tochar(java_objectheader *so)
 498 {
 499         java_lang_String *s = (java_lang_String *) so;
 500         java_chararray *a;
 501         s4 i;
 502
 503         if (!s)
 504                 return "";
 505
 506         a = s->value;
 507
 508         if (!a)
 509                 return "";
 510
 511         if (s->count > MAXSTRINGSIZE)
 512                 return "";
 513
 514         for (i = 0; i < s->count; i++)
 515                 stringbuffer[i] = a->data[s->offset + i];
 516
 517         stringbuffer[i] = '\0';
 518
 519         return stringbuffer;
 520 }
 521
 522
 523 /****************** function class_findfield_approx ****************************
 524
 525         searches in 'classinfo'-structure for a field with the
 526         specified name
 527
 528 *******************************************************************************/
 529
 530 fieldinfo *class_findfield_approx(classinfo *c, utf *name)
 531 {
 532         s4 i;
 533
 534         for (i = 0; i < c->fieldscount; i++) {
 535                 /* compare field names */
 536                 if ((c->fields[i].name == name))
 537                         return &(c->fields[i]);
 538         }
 539
 540         /* field was not found, raise exception */
 541         *exceptionptr = new_exception(string_java_lang_NoSuchFieldException);
 542
 543         return NULL;
 544 }
 545
 546
 547 s4 class_findfield_index_approx(classinfo *c, utf *name)
 548 {
 549         s4 i;
 550
 551         for (i = 0; i < c->fieldscount; i++) {
 552                 /* compare field names */
 553                 if ((c->fields[i].name == name))
 554                         return i;
 555         }
 556
 557         /* field was not found, raise exception */
 558         *exceptionptr = new_exception(string_java_lang_NoSuchFieldException);
 559
 560         return -1;
 561 }
 562
 563
 564 /********************** function: native_new_and_init *************************
 565
 566         Creates a new object on the heap and calls the initializer.
 567         Returns the object pointer or NULL if memory is exhausted.
 568
 569 *******************************************************************************/
 570
 571 java_objectheader *native_new_and_init(classinfo *c)
 572 {
 573         methodinfo *m;
 574         java_objectheader *o;
 575
 576         if (!c)
 577                 return *exceptionptr;
 578
 579         /* create object */
 580
 581         o = builtin_new(c);
 582
 583         if (!o)
 584                 return NULL;
 585
 586         /* find initializer */
 587
 588         m = class_findmethod(c, utf_new_char("<init>"), utf_new_char("()V"));
 589
 590         /* initializer not found */
 591
 592         if (!m)
 593                 return o;
 594
 595         /* call initializer */
 596
 597         asm_calljavafunction(m, o, NULL, NULL, NULL);
 598
 599         return o;
 600 }
 601
 602
 603 java_objectheader *native_new_and_init_string(classinfo *c, java_lang_String *s)
 604 {
 605         methodinfo *m;
 606         java_objectheader *o;
 607
 608         if (!c)
 609                 return *exceptionptr;
 610
 611         /* create object */
 612
 613         o = builtin_new(c);
 614
 615         if (!o)
 616                 return NULL;
 617
 618         /* find initializer */
 619
 620         m = class_resolveclassmethod(c,
 621                                                                  utf_new_char("<init>"),
 622                                                                  utf_new_char("(Ljava/lang/String;)V"),
 623                                                                  NULL,
 624                                                                  true);
 625
 626         /* initializer not found */
 627
 628         if (!m)
 629                 return NULL;
 630
 631         /* call initializer */
 632
 633         asm_calljavafunction(m, o, s, NULL, NULL);
 634
 635         return o;
 636 }
 637
 638
 639 java_objectheader *native_new_and_init_int(classinfo *c, s4 i)
 640 {
 641         methodinfo *m;
 642         java_objectheader *o;
 643
 644         if (!c)
 645                 return *exceptionptr;
 646
 647         /* create object */
 648
 649         o = builtin_new(c);
 650
 651         if (!o)
 652                 return NULL;
 653
 654         /* find initializer */
 655
 656         m = class_resolveclassmethod(c,
 657                                                                  utf_new_char("<init>"),
 658                                                                  utf_new_char("(I)V"),
 659                                                                  NULL,
 660                                                                  true);
 661
 662         /* initializer not found  */
 663         if (!m)
 664                 return NULL;
 665
 666         /* call initializer */
 667
 668         asm_calljavafunction(m, o, (void *) (ptrint) i, NULL, NULL);
 669
 670         return o;
 671 }
 672
 673
 674 java_objectheader *native_new_and_init_throwable(classinfo *c, java_lang_Throwable *t)
 675 {
 676         methodinfo *m;
 677         java_objectheader *o;
 678
 679         if (!c)
 680                 return *exceptionptr;
 681
 682         /* create object */
 683
 684         o = builtin_new(c);
 685
 686         if (!o)
 687                 return NULL;
 688
 689         /* find initializer */
 690
 691         m = class_findmethod(c,
 692                                                  utf_new_char("<init>"),
 693                                                  utf_new_char("(Ljava/lang/Throwable;)V"));
 694
 695         /* initializer not found */
 696
 697         if (!m)
 698                 return NULL;
 699
 700         /* call initializer */
 701
 702         asm_calljavafunction(m, o, t, NULL, NULL);
 703
 704         return o;
 705 }
 706
 707
 708 /******************** function: stringtable_update ****************************
 709
 710         traverses the javastring hashtable and sets the vftbl-entries of
 711         javastrings which were temporarily set to NULL, because
 712         java.lang.Object was not yet loaded
 713
 714 *******************************************************************************/
 715
 716 void stringtable_update ()
 717 {
 718         java_lang_String *js;
 719         java_chararray *a;
 720         literalstring *s;       /* hashtable entry */
 721         int i;
 722
 723         for (i = 0; i < string_hash.size; i++) {
 724                 s = string_hash.ptr[i];
 725                 if (s) {
 726                         while (s) {
 727
 728                                 js = (java_lang_String *) s->string;
 729
 730                                 if (!js || !js->value)
 731                                         /* error in hashtable found */
 732                                         panic("invalid literalstring in hashtable");
 733
 734                                 a = js->value;
 735
 736                                 if (!js->header.vftbl)
 737                                         /* vftbl of javastring is NULL */
 738                                         js->header.vftbl = class_java_lang_String->vftbl;
 739
 740                                 if (!a->header.objheader.vftbl)
 741                                         /* vftbl of character-array is NULL */
 742                                         a->header.objheader.vftbl = primitivetype_table[ARRAYTYPE_CHAR].arrayvftbl;
 743
 744                                 /* follow link in external hash chain */
 745                                 s = s->hashlink;
 746                         }
 747                 }
 748         }
 749 }
 750
 751
 752 /************************* function: u2_utflength ***************************
 753
 754         returns the utf length in bytes of a u2 array
 755
 756 *****************************************************************************/
 757
 758 u4 u2_utflength(u2 *text, u4 u2_length)
 759 {
 760         u4 result_len =  0;  /* utf length in bytes  */
 761         u2 ch;               /* current unicode character */
 762         u4 len;
 763
 764         for (len = 0; len < u2_length; len++) {
 765                 /* next unicode character */
 766                 ch = *text++;
 767
 768                 /* determine bytes required to store unicode character as utf */
 769                 if (ch && (ch < 0x80))
 770                         result_len++;
 771                 else if (ch < 0x800)
 772                         result_len += 2;
 773                 else
 774                         result_len += 3;
 775         }
 776
 777     return result_len;
 778 }
 779
 780
 781 /********************* function: utf_new_u2 ***********************************
 782
 783         make utf symbol from u2 array,
 784         if isclassname is true '.' is replaced by '/'
 785
 786 *******************************************************************************/
 787
 788 utf *utf_new_u2(u2 *unicode_pos, u4 unicode_length, bool isclassname)
 789 {
 790         char *buffer; /* memory buffer for  unicode characters */
 791         char *pos;    /* pointer to current position in buffer */
 792         u4 left;      /* unicode characters left */
 793         u4 buflength; /* utf length in bytes of the u2 array  */
 794         utf *result;  /* resulting utf-string */
 795         int i;
 796
 797         /* determine utf length in bytes and allocate memory */
 798         /* printf("utf_new_u2: unicode_length=%d\n",unicode_length);            */
 799         buflength = u2_utflength(unicode_pos, unicode_length);
 800         buffer    = MNEW(char, buflength);
 801
 802         left = buflength;
 803         pos  = buffer;
 804
 805         for (i = 0; i++ < unicode_length; unicode_pos++) {
 806                 /* next unicode character */
 807                 u2 c = *unicode_pos;
 808
 809                 if ((c != 0) && (c < 0x80)) {
 810                         /* 1 character */
 811                         left--;
 812                 if ((int) left < 0) break;
 813                         /* convert classname */
 814                         if (isclassname && c == '.')
 815                                 *pos++ = '/';
 816                         else
 817                                 *pos++ = (char) c;
 818
 819                 } else if (c < 0x800) {
 820                         /* 2 characters */
 821                 unsigned char high = c >> 6;
 822                 unsigned char low  = c & 0x3F;
 823                         left = left - 2;
 824                 if ((int) left < 0) break;
 825                 *pos++ = high | 0xC0;
 826                 *pos++ = low  | 0x80;
 827
 828                 } else {
 829                 /* 3 characters */
 830                 char low  = c & 0x3f;
 831                 char mid  = (c >> 6) & 0x3F;
 832                 char high = c >> 12;
 833                         left = left - 3;
 834                 if ((int) left < 0) break;
 835                 *pos++ = high | 0xE0;
 836                 *pos++ = mid  | 0x80;
 837                 *pos++ = low  | 0x80;
 838                 }
 839         }
 840
 841         /* insert utf-string into symbol-table */
 842         result = utf_new(buffer,buflength);
 843
 844         MFREE(buffer, char, buflength);
 845
 846         return result;
 847 }
 848
 849
 850 /********************* function: javastring_toutf *****************************
 851
 852         make utf symbol from javastring
 853
 854 *******************************************************************************/
 855
 856 utf *javastring_toutf(java_lang_String *string, bool isclassname)
 857 {
 858         java_lang_String *str = (java_lang_String *) string;
 859
 860 /*      printf("javastring_toutf offset: %d, len %d\n",str->offset, str->count); */
 861 /*      fflush(stdout); */
 862
 863         return utf_new_u2(str->value->data + str->offset, str->count, isclassname);
 864 }
 865
 866
 867 /********************* function: literalstring_u2 *****************************
 868
 869     searches for the javastring with the specified u2-array in
 870     the string hashtable, if there is no such string a new one is
 871     created
 872
 873     if copymode is true a copy of the u2-array is made
 874
 875 *******************************************************************************/
 876
 877 java_objectheader *literalstring_u2(java_chararray *a, u4 length, u4 offset,
 878                                                                         bool copymode)
 879 {
 880     literalstring *s;                /* hashtable element */
 881     java_lang_String *js;            /* u2-array wrapped in javastring */
 882     java_chararray *stringdata;      /* copy of u2-array */
 883     u4 key;
 884     u4 slot;
 885     u2 i;
 886
 887 /* #define DEBUG_LITERALSTRING_U2 */
 888 #ifdef DEBUG_LITERALSTRING_U2
 889     printf("literalstring_u2: length=%d, offset=%d\n", length, offset);
 890         fflush(stdout);
 891 #endif
 892
 893     /* find location in hashtable */
 894     key  = unicode_hashkey(a->data + offset, length);
 895     slot = key & (string_hash.size - 1);
 896     s    = string_hash.ptr[slot];
 897
 898     while (s) {
 899                 js = (java_lang_String *) s->string;
 900
 901                 if (length == js->count) {
 902                         /* compare text */
 903                         for (i = 0; i < length; i++) {
 904                                 if (a->data[offset + i] != js->value->data[i])
 905                                         goto nomatch;
 906                         }
 907
 908                         /* string already in hashtable, free memory */
 909                         if (!copymode)
 910                                 mem_free(a, sizeof(java_chararray) + sizeof(u2) * (length - 1) + 10);
 911
 912 #ifdef DEBUG_LITERALSTRING_U2
 913                         printf("literalstring_u2: foundentry at %p\n", js);
 914                         utf_display(javastring_toutf(js, 0));
 915                         printf("\n\n");
 916                         fflush(stdout);
 917 #endif
 918                         return (java_objectheader *) js;
 919                 }
 920
 921         nomatch:
 922                 /* follow link in external hash chain */
 923                 s = s->hashlink;
 924     }
 925
 926     if (copymode) {
 927                 /* create copy of u2-array for new javastring */
 928                 u4 arraysize = sizeof(java_chararray) + sizeof(u2) * (length - 1) + 10;
 929                 stringdata = mem_alloc(arraysize);
 930 /*              memcpy(stringdata, a, arraysize); */
 931                 memcpy(&(stringdata->header), &(a->header), sizeof(java_arrayheader));
 932                 memcpy(&(stringdata->data), &(a->data) + offset, sizeof(u2) * (length - 1) + 10);
 933
 934     } else {
 935                 stringdata = a;
 936         }
 937
 938     /* location in hashtable found, complete arrayheader */
 939     stringdata->header.objheader.vftbl = primitivetype_table[ARRAYTYPE_CHAR].arrayvftbl;
 940     stringdata->header.size = length;
 941
 942         /* if we use eager loading, we have to check loaded String class */
 943         if (opt_eager) {
 944                 class_java_lang_String =
 945                         class_new_intern(utf_new_char("java/lang/String"));
 946
 947                 if (!class_load(class_java_lang_String))
 948                         return NULL;
 949
 950                 list_addfirst(&unlinkedclasses, class_java_lang_String);
 951         }
 952
 953         /* create new javastring */
 954         js = NEW(java_lang_String);
 955 #if defined(USE_THREADS) && defined(NATIVE_THREADS)
 956         initObjectLock(&js->header);
 957 #endif
 958         js->header.vftbl = class_java_lang_String->vftbl;
 959         js->value  = stringdata;
 960         js->offset = 0;
 961         js->count  = length;
 962
 963 #ifdef DEBUG_LITERALSTRING_U2
 964         printf("literalstring_u2: newly created at %p\n", js);
 965         utf_display(javastring_toutf(js, 0));
 966         printf("\n\n");
 967         fflush(stdout);
 968 #endif
 969
 970         /* create new literalstring */
 971         s = NEW(literalstring);
 972         s->hashlink = string_hash.ptr[slot];
 973         s->string   = (java_objectheader *) js;
 974         string_hash.ptr[slot] = s;
 975
 976         /* update number of hashtable entries */
 977         string_hash.entries++;
 978
 979         /* reorganization of hashtable */
 980         if (string_hash.entries > (string_hash.size * 2)) {
 981                 /* reorganization of hashtable, average length of
 982                    the external chains is approx. 2                */
 983
 984                 u4 i;
 985                 literalstring *s;
 986                 hashtable newhash; /* the new hashtable */
 987
 988                 /* create new hashtable, double the size */
 989                 init_hashtable(&newhash, string_hash.size * 2);
 990                 newhash.entries = string_hash.entries;
 991
 992                 /* transfer elements to new hashtable */
 993                 for (i = 0; i < string_hash.size; i++) {
 994                         s = string_hash.ptr[i];
 995                         while (s) {
 996                                 literalstring *nexts = s->hashlink;
 997                                 js   = (java_lang_String *) s->string;
 998                                 slot = unicode_hashkey(js->value->data, js->count) & (newhash.size - 1);
 999
1000                                 s->hashlink = newhash.ptr[slot];
1001                                 newhash.ptr[slot] = s;
1002
1003                                 /* follow link in external hash chain */
1004                                 s = nexts;
1005                         }
1006                 }
1007
1008                 /* dispose old table */
1009                 MFREE(string_hash.ptr, void*, string_hash.size);
1010                 string_hash = newhash;
1011         }
1012
1013         return (java_objectheader *) js;
1014 }
1015
1016
1017 /******************** Function: literalstring_new *****************************
1018
1019     creates a new javastring with the text of the utf-symbol
1020     and inserts it into the string hashtable
1021
1022 *******************************************************************************/
1023
1024 java_objectheader *literalstring_new(utf *u)
1025 {
1026     char *utf_ptr = u->text;         /* pointer to current unicode character in utf string */
1027     u4 utflength  = utf_strlen(u);   /* length of utf-string if uncompressed */
1028     java_chararray *a;               /* u2-array constructed from utf string */
1029     u4 i;
1030
1031     /* allocate memory */
1032     a = mem_alloc(sizeof(java_chararray) + sizeof(u2) * (utflength - 1) + 10);
1033
1034     /* convert utf-string to u2-array */
1035     for (i = 0; i < utflength; i++)
1036                 a->data[i] = utf_nextu2(&utf_ptr);
1037
1038     return literalstring_u2(a, utflength, 0, false);
1039 }
1040
1041
1042 /********************** function: literalstring_free **************************
1043
1044         removes a javastring from memory
1045
1046 ******************************************************************************/
1047
1048 void literalstring_free(java_objectheader* sobj)
1049 {
1050         java_lang_String *s = (java_lang_String *) sobj;
1051         java_chararray *a = s->value;
1052
1053         /* dispose memory of java.lang.String object */
1054         FREE(s, java_lang_String);
1055
1056         /* dispose memory of java-characterarray */
1057         FREE(a, sizeof(java_chararray) + sizeof(u2) * (a->header.size - 1)); /* +10 ?? */
1058 }
1059
1060
1061 void copy_vftbl(vftbl_t **dest, vftbl_t *src)
1062 {
1063     *dest = src;
1064 #if 0
1065     /* XXX this kind of copying does not work (in the general
1066      * case). The interface tables would have to be copied, too. I
1067      * don't see why we should make a copy anyway. -Edwin
1068      */
1069         *dest = mem_alloc(sizeof(vftbl) + sizeof(methodptr)*(src->vftbllength-1));
1070         memcpy(*dest, src, sizeof(vftbl) - sizeof(methodptr));
1071         memcpy(&(*dest)->table, &src->table, src->vftbllength * sizeof(methodptr));
1072 #endif
1073 }
1074
1075
1076 /******************************************************************************************
1077
1078         creates method signature (excluding return type) from array of
1079         class-objects representing the parameters of the method
1080
1081 *******************************************************************************************/
1082
1083
1084 utf *create_methodsig(java_objectarray* types, char *retType)
1085 {
1086     char *buffer;       /* buffer for building the desciptor */
1087     char *pos;          /* current position in buffer */
1088     utf *result;        /* the method signature */
1089     u4 buffer_size = 3; /* minimal size=3: room for parenthesis and returntype */
1090     u4 i, j;
1091
1092     if (!types) return NULL;
1093
1094     /* determine required buffer-size */
1095     for (i = 0; i < types->header.size; i++) {
1096                 classinfo *c = (classinfo *) types->data[i];
1097                 buffer_size  = buffer_size + c->name->blength + 2;
1098     }
1099
1100     if (retType) buffer_size += strlen(retType);
1101
1102     /* allocate buffer */
1103     buffer = MNEW(char, buffer_size);
1104     pos    = buffer;
1105
1106     /* method-desciptor starts with parenthesis */
1107     *pos++ = '(';
1108
1109     for (i = 0; i < types->header.size; i++) {
1110                 char ch;
1111
1112                 /* current argument */
1113             classinfo *c = (classinfo *) types->data[i];
1114
1115             /* current position in utf-text */
1116             char *utf_ptr = c->name->text;
1117
1118             /* determine type of argument */
1119             if ((ch = utf_nextu2(&utf_ptr)) == '[') {
1120                 /* arrayclass */
1121                 for (utf_ptr--; utf_ptr < utf_end(c->name); utf_ptr++) {
1122                                 *pos++ = *utf_ptr; /* copy text */
1123                         }
1124
1125             } else {
1126                         /* check for primitive types */
1127                         for (j = 0; j < PRIMITIVETYPE_COUNT; j++) {
1128                                 char *utf_pos   = utf_ptr - 1;
1129                                 char *primitive = primitivetype_table[j].wrapname;
1130
1131                                 /* compare text */
1132                                 while (utf_pos < utf_end(c->name)) {
1133                                         if (*utf_pos++ != *primitive++) goto nomatch;
1134                                 }
1135
1136                                 /* primitive type found */
1137                                 *pos++ = primitivetype_table[j].typesig;
1138                                 goto next_type;
1139
1140                         nomatch:
1141                                 ;
1142                         }
1143
1144                         /* no primitive type and no arrayclass, so must be object */
1145                         *pos++ = 'L';
1146
1147                         /* copy text */
1148                         for (utf_ptr--; utf_ptr < utf_end(c->name); utf_ptr++) {
1149                                 *pos++ = *utf_ptr;
1150                         }
1151
1152                         *pos++ = ';';
1153
1154                 next_type:
1155                         ;
1156                 }
1157     }
1158
1159     *pos++ = ')';
1160
1161     if (retType) {
1162                 for (i = 0; i < strlen(retType); i++) {
1163                         *pos++ = retType[i];
1164                 }
1165     }
1166
1167     /* create utf-string */
1168     result = utf_new(buffer, (pos - buffer));
1169     MFREE(buffer, char, buffer_size);
1170
1171     return result;
1172 }
1173
1174
1175 /******************************************************************************************
1176
1177         retrieve the next argument or returntype from a descriptor
1178         and return the corresponding class
1179
1180 *******************************************************************************************/
1181
1182 classinfo *get_type(char **utf_ptr,char *desc_end, bool skip)
1183 {
1184     classinfo *c = class_from_descriptor(*utf_ptr,desc_end,utf_ptr,
1185                                          (skip) ? CLASSLOAD_SKIP : CLASSLOAD_LOAD);
1186     if (!c)
1187         /* unknown type */
1188         panic("illegal descriptor");
1189
1190     if (skip) return NULL;
1191
1192     use_class_as_object(c);
1193     return c;
1194 }
1195
1196
1197 /* get_parametertypes **********************************************************
1198
1199    use the descriptor of a method to generate a java/lang/Class array
1200    which contains the classes of the parametertypes of the method
1201
1202 *******************************************************************************/
1203
1204 java_objectarray* get_parametertypes(methodinfo *m)
1205 {
1206     utf  *descr    =  m->descriptor;    /* method-descriptor */
1207     char *utf_ptr  =  descr->text;      /* current position in utf-text */
1208     char *desc_end =  utf_end(descr);   /* points behind utf string     */
1209     java_objectarray* result;
1210     int parametercount = 0;
1211     int i;
1212
1213     /* skip '(' */
1214     utf_nextu2(&utf_ptr);
1215
1216     /* determine number of parameters */
1217     while (*utf_ptr != ')') {
1218         get_type(&utf_ptr, desc_end, true);
1219                 parametercount++;
1220     }
1221
1222     /* create class-array */
1223     result = builtin_anewarray(parametercount, class_java_lang_Class);
1224
1225     utf_ptr = descr->text;
1226     utf_nextu2(&utf_ptr);
1227
1228     /* get returntype classes */
1229     for (i = 0; i < parametercount; i++)
1230             result->data[i] =
1231                         (java_objectheader *) get_type(&utf_ptr, desc_end, false);
1232
1233     return result;
1234 }
1235
1236
1237 /* get_exceptiontypes **********************************************************
1238
1239    get the exceptions which can be thrown by a method
1240
1241 *******************************************************************************/
1242
1243 java_objectarray* get_exceptiontypes(methodinfo *m)
1244 {
1245     u2 excount;
1246     u2 i;
1247     java_objectarray *result;
1248
1249         excount = m->thrownexceptionscount;
1250
1251     /* create class-array */
1252     result = builtin_anewarray(excount, class_java_lang_Class);
1253
1254     for (i = 0; i < excount; i++) {
1255                 java_objectheader *o = (java_objectheader *) (m->thrownexceptions[i]);
1256                 use_class_as_object((classinfo *) o);
1257                 result->data[i] = o;
1258     }
1259
1260     return result;
1261 }
1262
1263
1264
1265
1266
1267 /******************************************************************************************
1268
1269         get the returntype class of a method
1270
1271 *******************************************************************************************/
1272
1273 classinfo *get_returntype(methodinfo *m)
1274 {
1275         char *utf_ptr;   /* current position in utf-text */
1276         char *desc_end;  /* points behind utf string     */
1277         utf *desc = m->descriptor; /* method-descriptor  */
1278
1279         utf_ptr  = desc->text;
1280         desc_end = utf_end(desc);
1281
1282         /* ignore parametertypes */
1283         while ((utf_ptr<desc_end) && utf_nextu2(&utf_ptr)!=')')
1284                 /* skip */ ;
1285
1286         return get_type(&utf_ptr,desc_end, false);
1287 }
1288
1289
1290 /*****************************************************************************/
1291 /*****************************************************************************/
1292
1293
1294 /*--------------------------------------------------------*/
1295 void printNativeCall(nativeCall nc) {
1296   int i,j;
1297
1298   printf("\n%s's Native Methods call:\n",nc.classname); fflush(stdout);
1299   for (i=0; i<nc.methCnt; i++) {
1300       printf("\tMethod=%s %s\n",nc.methods[i].methodname, nc.methods[i].descriptor);fflush(stdout);
1301
1302     for (j=0; j<nc.callCnt[i]; j++) {
1303         printf("\t\t<%i,%i>aCalled = %s %s %s\n",i,j,
1304         nc.methods[i].methodCalls[j].classname,
1305         nc.methods[i].methodCalls[j].methodname,
1306         nc.methods[i].methodCalls[j].descriptor);fflush(stdout);
1307       }
1308     }
1309   printf("-+++++--------------------\n");fflush(stdout);
1310 }
1311
1312 /*--------------------------------------------------------*/
1313 void printCompNativeCall(nativeCompCall nc) {
1314   int i,j;
1315   printf("printCompNativeCall BEGIN\n");fflush(stdout);
1316   printf("\n%s's Native Comp Methods call:\n",nc.classname->text);fflush(stdout);
1317   utf_display(nc.classname); fflush(stdout);
1318
1319   for (i=0; i<nc.methCnt; i++) {
1320     printf("\tMethod=%s %s\n",nc.methods[i].methodname->text,nc.methods[i].descriptor->text);fflush(stdout);
1321     utf_display(nc.methods[i].methodname); fflush(stdout);
1322     utf_display(nc.methods[i].descriptor);fflush(stdout);
1323     printf("\n");fflush(stdout);
1324
1325     for (j=0; j<nc.callCnt[i]; j++) {
1326       printf("\t\t<%i,%i>bCalled = ",i,j);fflush(stdout);
1327         utf_display(nc.methods[i].methodCalls[j].classname);fflush(stdout);
1328         utf_display(nc.methods[i].methodCalls[j].methodname); fflush(stdout);
1329         utf_display(nc.methods[i].methodCalls[j].descriptor);fflush(stdout);
1330         printf("\n");fflush(stdout);
1331       }
1332     }
1333 printf("---------------------\n");fflush(stdout);
1334 }
1335
1336
1337 /*--------------------------------------------------------*/
1338 classMeth findNativeMethodCalls(utf *c, utf *m, utf *d )
1339 {
1340     int i = 0;
1341     int j = 0;
1342     int cnt = 0;
1343     classMeth mc;
1344     mc.i_class = i;
1345     mc.j_method = j;
1346     mc.methCnt = cnt;
1347
1348     return mc;
1349 }
1350
1351 /*--------------------------------------------------------*/
1352 nativeCall* findNativeClassCalls(char *aclassname ) {
1353 int i;
1354
1355 for (i=0;i<NATIVECALLSSIZE; i++) {
1356    /* convert table to utf later to speed up search */
1357    if (strcmp(nativeCalls[i].classname, aclassname) == 0)
1358         return &nativeCalls[i];
1359    }
1360
1361 return NULL;
1362 }
1363 /*--------------------------------------------------------*/
1364 /*--------------------------------------------------------*/
1365 void utfNativeCall(nativeCall nc, nativeCompCall *ncc) {
1366   int i,j;
1367
1368
1369   ncc->classname = utf_new_char(nc.classname);
1370   ncc->methCnt = nc.methCnt;
1371
1372   for (i=0; i<nc.methCnt; i++) {
1373     ncc->methods[i].methodname = utf_new_char(nc.methods[i].methodname);
1374     ncc->methods[i].descriptor = utf_new_char(nc.methods[i].descriptor);
1375     ncc->callCnt[i] = nc.callCnt[i];
1376
1377     for (j=0; j<nc.callCnt[i]; j++) {
1378
1379         ncc->methods[i].methodCalls[j].classname  = utf_new_char(nc.methods[i].methodCalls[j].classname);
1380
1381         if (strcmp("", nc.methods[i].methodCalls[j].methodname) != 0) {
1382           ncc->methods[i].methodCalls[j].methodname = utf_new_char(nc.methods[i].methodCalls[j].methodname);
1383           ncc->methods[i].methodCalls[j].descriptor = utf_new_char(nc.methods[i].methodCalls[j].descriptor);
1384           }
1385         else {
1386           ncc->methods[i].methodCalls[j].methodname = NULL;
1387           ncc->methods[i].methodCalls[j].descriptor = NULL;
1388           }
1389       }
1390     }
1391 }
1392
1393
1394
1395 /*--------------------------------------------------------*/
1396
1397 bool natcall2utf(bool natcallcompdone) {
1398 int i;
1399
1400 if (natcallcompdone)
1401         return true;
1402
1403 for (i=0;i<NATIVECALLSSIZE; i++) {
1404    utfNativeCall  (nativeCalls[i], &nativeCompCalls[i]);
1405    }
1406
1407 return true;
1408 }
1409
1410 /*--------------------------------------------------------*/
1411
1412
1413 java_objectarray *builtin_asm_createclasscontextarray(classinfo **end, classinfo **start)
1414 {
1415 #if defined(__GNUC__)
1416 #warning platform dependend
1417 #endif
1418         java_objectarray *tmpArray;
1419         int i;
1420         classinfo **current;
1421         classinfo *c;
1422         size_t size;
1423
1424         size = (((size_t) start) - ((size_t) end)) / sizeof(classinfo*);
1425
1426         /*printf("end %p, start %p, size %ld\n",end,start,size);*/
1427         if (!class_java_lang_Class)
1428                 class_java_lang_Class = class_new(utf_new_char("java/lang/Class"));
1429
1430         if (!class_java_lang_SecurityManager)
1431                 class_java_lang_SecurityManager =
1432                         class_new(utf_new_char("java/lang/SecurityManager"));
1433
1434         if (size > 0) {
1435                 if (start == class_java_lang_SecurityManager) {
1436                         size--;
1437                         start--;
1438                 }
1439         }
1440
1441         tmpArray =
1442                 builtin_newarray(size, class_array_of(class_java_lang_Class)->vftbl);
1443
1444         for(i = 0, current = start; i < size; i++, current--) {
1445                 c = *current;
1446                 /*              printf("%d\n",i);
1447                 utf_display(c->name);*/
1448                 use_class_as_object(c);
1449                 tmpArray->data[i] = (java_objectheader *) c;
1450         }
1451
1452         return tmpArray;
1453 }
1454
1455
1456 java_lang_ClassLoader *builtin_asm_getclassloader(classinfo **end, classinfo **start)
1457 {
1458 #if defined(__GNUC__)
1459 #warning platform dependend
1460 #endif
1461         int i;
1462         classinfo **current;
1463         classinfo *c;
1464         classinfo *privilegedAction;
1465         size_t size;
1466
1467         size = (((size_t) start) - ((size_t) end)) / sizeof(classinfo*);
1468
1469         /*      log_text("builtin_asm_getclassloader");
1470         printf("end %p, start %p, size %ld\n",end,start,size);*/
1471
1472         if (!class_java_lang_SecurityManager)
1473                 class_java_lang_SecurityManager =
1474                         class_new(utf_new_char("java/lang/SecurityManager"));
1475
1476         if (size > 0) {
1477                 if (start == class_java_lang_SecurityManager) {
1478                         size--;
1479                         start--;
1480                 }
1481         }
1482
1483         privilegedAction=class_new(utf_new_char("java/security/PrivilegedAction"));
1484
1485         for(i = 0, current = start; i < size; i++, current--) {
1486                 c = *current;
1487
1488                 if (c == privilegedAction)
1489                         return NULL;
1490
1491                 if (c->classloader)
1492                         return (java_lang_ClassLoader *) c->classloader;
1493         }
1494
1495         return NULL;
1496
1497         /*
1498         log_text("Java_java_lang_VMSecurityManager_currentClassLoader");
1499         init_systemclassloader();
1500
1501         return SystemClassLoader;*/
1502 }
1503
1504
1505 /*
1506  * These are local overrides for various environment variables in Emacs.
1507  * Please do not remove this and leave it at the end of the file, where
1508  * Emacs will automagically detect them.
1509  * ---------------------------------------------------------------------
1510  * Local variables:
1511  * mode: c
1512  * indent-tabs-mode: t
1513  * c-basic-offset: 4
1514  * tab-width: 4
1515  * End:
1516  */