src/vmcore/class.c

   1 /* src/vmcore/class.c - class related functions
   2
   3    Copyright (C) 1996-2005, 2006, 2007 R. Grafl, A. Krall, C. Kruegel,
   4    C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
   5    E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
   6    J. Wenninger, 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., 51 Franklin Street, Fifth Floor, Boston, MA
  23    02110-1301, USA.
  24
  25    $Id: class.c 8024 2007-06-06 17:23:42Z twisti $
  26
  27 */
  28
  29
  30 #include "config.h"
  31
  32 #include <assert.h>
  33 #include <stdio.h>
  34 #include <stdlib.h>
  35 #include <string.h>
  36
  37 #include "vm/types.h"
  38
  39 #include "arch.h"
  40
  41 #include "mm/memory.h"
  42
  43 #include "threads/lock-common.h"
  44
  45 #include "toolbox/logging.h"
  46
  47 #include "vm/exceptions.h"
  48 #include "vm/global.h"
  49
  50 #include "vm/jit/asmpart.h"
  51
  52 #include "vmcore/class.h"
  53 #include "vmcore/classcache.h"
  54 #include "vmcore/loader.h"
  55 #include "vmcore/options.h"
  56
  57 #if defined(ENABLE_STATISTICS)
  58 # include "vmcore/statistics.h"
  59 #endif
  60
  61 #include "vmcore/suck.h"
  62 #include "vmcore/utf8.h"
  63
  64
  65 /* global variables ***********************************************************/
  66
  67 list_t unlinkedclasses;                 /* this is only used for eager class  */
  68                                         /* loading                            */
  69
  70
  71 /* frequently used classes ****************************************************/
  72
  73 /* important system classes */
  74
  75 classinfo *class_java_lang_Object;
  76 classinfo *class_java_lang_Class;
  77 classinfo *class_java_lang_ClassLoader;
  78 classinfo *class_java_lang_Cloneable;
  79 classinfo *class_java_lang_SecurityManager;
  80 classinfo *class_java_lang_String;
  81 classinfo *class_java_lang_System;
  82 classinfo *class_java_lang_Thread;
  83 classinfo *class_java_lang_ThreadGroup;
  84 classinfo *class_java_lang_VMSystem;
  85 classinfo *class_java_lang_VMThread;
  86 classinfo *class_java_io_Serializable;
  87
  88
  89 /* system exception classes required in cacao */
  90
  91 classinfo *class_java_lang_Throwable;
  92 classinfo *class_java_lang_Error;
  93 classinfo *class_java_lang_LinkageError;
  94 classinfo *class_java_lang_NoClassDefFoundError;
  95 classinfo *class_java_lang_OutOfMemoryError;
  96 classinfo *class_java_lang_VirtualMachineError;
  97
  98 #if defined(WITH_CLASSPATH_GNU)
  99 classinfo *class_java_lang_VMThrowable;
 100 #endif
 101
 102 classinfo *class_java_lang_Exception;
 103 classinfo *class_java_lang_ClassCastException;
 104 classinfo *class_java_lang_ClassNotFoundException;
 105
 106 #if defined(ENABLE_JAVASE)
 107 classinfo *class_java_lang_Void;
 108 #endif
 109 classinfo *class_java_lang_Boolean;
 110 classinfo *class_java_lang_Byte;
 111 classinfo *class_java_lang_Character;
 112 classinfo *class_java_lang_Short;
 113 classinfo *class_java_lang_Integer;
 114 classinfo *class_java_lang_Long;
 115 classinfo *class_java_lang_Float;
 116 classinfo *class_java_lang_Double;
 117
 118
 119 /* some runtime exception */
 120
 121 classinfo *class_java_lang_NullPointerException;
 122
 123
 124 /* some classes which may be used more often */
 125
 126 #if defined(ENABLE_JAVASE)
 127 classinfo *class_java_lang_StackTraceElement;
 128 classinfo *class_java_lang_reflect_Constructor;
 129 classinfo *class_java_lang_reflect_Field;
 130 classinfo *class_java_lang_reflect_Method;
 131 classinfo *class_java_security_PrivilegedAction;
 132 classinfo *class_java_util_Vector;
 133
 134 classinfo *arrayclass_java_lang_Object;
 135 #endif
 136
 137
 138 /* pseudo classes for the typechecker */
 139
 140 classinfo *pseudo_class_Arraystub;
 141 classinfo *pseudo_class_Null;
 142 classinfo *pseudo_class_New;
 143
 144
 145 /* class_set_packagename *******************************************************
 146
 147    Derive the package name from the class name and store it in the struct.
 148
 149 *******************************************************************************/
 150
 151 void class_set_packagename(classinfo *c)
 152 {
 153         char *p = UTF_END(c->name) - 1;
 154         char *start = c->name->text;
 155
 156         /* set the package name */
 157         /* classes in the unnamed package keep packagename == NULL */
 158
 159         if (c->name->text[0] == '[') {
 160                 /* set packagename of arrays to the element's package */
 161
 162                 for (; *start == '['; start++);
 163
 164                 /* skip the 'L' in arrays of references */
 165                 if (*start == 'L')
 166                         start++;
 167
 168                 for (; (p > start) && (*p != '/'); --p);
 169
 170                 c->packagename = utf_new(start, p - start);
 171
 172         } else {
 173                 for (; (p > start) && (*p != '/'); --p);
 174
 175                 c->packagename = utf_new(start, p - start);
 176         }
 177 }
 178
 179
 180 /* class_create_classinfo ******************************************************
 181
 182    Create a new classinfo struct. The class name is set to the given utf *,
 183    most other fields are initialized to zero.
 184
 185    Note: classname may be NULL. In this case a not-yet-named classinfo is
 186          created. The name must be filled in later and class_set_packagename
 187                  must be called after that.
 188
 189 *******************************************************************************/
 190
 191 classinfo *class_create_classinfo(utf *classname)
 192 {
 193         classinfo *c;
 194
 195 #if defined(ENABLE_STATISTICS)
 196         if (opt_stat)
 197                 size_classinfo += sizeof(classinfo);
 198 #endif
 199
 200         /* we use a safe name for temporarily unnamed classes */
 201
 202         if (classname == NULL)
 203                 classname = utf_not_named_yet;
 204
 205 #if !defined(NDEBUG)
 206         if (initverbose)
 207                 log_message_utf("Creating class: ", classname);
 208 #endif
 209
 210         /* GCNEW_UNCOLLECTABLE clears the allocated memory */
 211
 212         c = GCNEW_UNCOLLECTABLE(classinfo, 1);
 213         /*c=NEW(classinfo);*/
 214         c->name = classname;
 215
 216         /* Set the header.vftbl of all loaded classes to the one of
 217        java.lang.Class, so Java code can use a class as object. */
 218
 219         if (class_java_lang_Class != NULL)
 220                 if (class_java_lang_Class->vftbl != NULL)
 221                         c->object.header.vftbl = class_java_lang_Class->vftbl;
 222
 223 #if defined(ENABLE_JAVASE)
 224         /* check if the class is a reference class and flag it */
 225
 226         if (classname == utf_java_lang_ref_SoftReference) {
 227                 c->flags |= ACC_CLASS_SOFT_REFERENCE;
 228         }
 229         else if (classname == utf_java_lang_ref_WeakReference) {
 230                 c->flags |= ACC_CLASS_WEAK_REFERENCE;
 231         }
 232         else if (classname == utf_java_lang_ref_PhantomReference) {
 233                 c->flags |= ACC_CLASS_PHANTOM_REFERENCE;
 234         }
 235 #endif
 236
 237         if (classname != utf_not_named_yet)
 238                 class_set_packagename(c);
 239
 240         LOCK_INIT_OBJECT_LOCK(&c->object.header);
 241
 242         return c;
 243 }
 244
 245
 246 /* class_postset_header_vftbl **************************************************
 247
 248    Set the header.vftbl of all classes created before java.lang.Class
 249    was linked.  This is necessary that Java code can use a class as
 250    object.
 251
 252 *******************************************************************************/
 253
 254 void class_postset_header_vftbl(void)
 255 {
 256         classinfo *c;
 257         u4 slot;
 258         classcache_name_entry *nmen;
 259         classcache_class_entry *clsen;
 260
 261         assert(class_java_lang_Class);
 262
 263         for (slot = 0; slot < hashtable_classcache.size; slot++) {
 264                 nmen = (classcache_name_entry *) hashtable_classcache.ptr[slot];
 265
 266                 for (; nmen; nmen = nmen->hashlink) {
 267                         /* iterate over all class entries */
 268
 269                         for (clsen = nmen->classes; clsen; clsen = clsen->next) {
 270                                 c = clsen->classobj;
 271
 272                                 /* now set the the vftbl */
 273
 274                                 if (c->object.header.vftbl == NULL)
 275                                         c->object.header.vftbl = class_java_lang_Class->vftbl;
 276                         }
 277                 }
 278         }
 279 }
 280
 281
 282 /* class_load_attribute_sourcefile *********************************************
 283
 284    SourceFile_attribute {
 285        u2 attribute_name_index;
 286        u4 attribute_length;
 287            u2 sourcefile_index;
 288    }
 289
 290 *******************************************************************************/
 291
 292 static bool class_load_attribute_sourcefile(classbuffer *cb)
 293 {
 294         classinfo *c;
 295         u4         attribute_length;
 296         u2         sourcefile_index;
 297         utf       *sourcefile;
 298
 299         /* get classinfo */
 300
 301         c = cb->class;
 302
 303         /* check buffer size */
 304
 305         if (!suck_check_classbuffer_size(cb, 4 + 2))
 306                 return false;
 307
 308         /* check attribute length */
 309
 310         attribute_length = suck_u4(cb);
 311
 312         if (attribute_length != 2) {
 313                 exceptions_throw_classformaterror(c, "Wrong size for VALUE attribute");
 314                 return false;
 315         }
 316
 317         /* there can be no more than one SourceFile attribute */
 318
 319         if (c->sourcefile != NULL) {
 320                 exceptions_throw_classformaterror(c, "Multiple SourceFile attributes");
 321                 return false;
 322         }
 323
 324         /* get sourcefile */
 325
 326         sourcefile_index = suck_u2(cb);
 327         sourcefile = class_getconstant(c, sourcefile_index, CONSTANT_Utf8);
 328
 329         if (sourcefile == NULL)
 330                 return false;
 331
 332         /* store sourcefile */
 333
 334         c->sourcefile = sourcefile;
 335
 336         return true;
 337 }
 338
 339
 340 /* class_load_attribute_enclosingmethod ****************************************
 341
 342    EnclosingMethod_attribute {
 343        u2 attribute_name_index;
 344        u4 attribute_length;
 345            u2 class_index;
 346            u2 method_index;
 347    }
 348
 349 *******************************************************************************/
 350
 351 #if defined(ENABLE_JAVASE)
 352 static bool class_load_attribute_enclosingmethod(classbuffer *cb)
 353 {
 354         classinfo             *c;
 355         u4                     attribute_length;
 356         u2                     class_index;
 357         u2                     method_index;
 358         classref_or_classinfo  cr;
 359         constant_nameandtype  *cn;
 360
 361         /* get classinfo */
 362
 363         c = cb->class;
 364
 365         /* check buffer size */
 366
 367         if (!suck_check_classbuffer_size(cb, 4 + 2 + 2))
 368                 return false;
 369
 370         /* check attribute length */
 371
 372         attribute_length = suck_u4(cb);
 373
 374         if (attribute_length != 4) {
 375                 exceptions_throw_classformaterror(c, "Wrong size for VALUE attribute");
 376                 return false;
 377         }
 378
 379         /* there can be no more than one EnclosingMethod attribute */
 380
 381         if (c->enclosingmethod != NULL) {
 382                 exceptions_throw_classformaterror(c, "Multiple EnclosingMethod attributes");
 383                 return false;
 384         }
 385
 386         /* get class index */
 387
 388         class_index = suck_u2(cb);
 389         cr.ref = innerclass_getconstant(c, class_index, CONSTANT_Class);
 390
 391         /* get method index */
 392
 393         method_index = suck_u2(cb);
 394         cn = innerclass_getconstant(c, method_index, CONSTANT_NameAndType);
 395
 396         /* store info in classinfo */
 397
 398         c->enclosingclass.any = cr.any;
 399         c->enclosingmethod    = cn;
 400
 401         return true;
 402 }
 403 #endif /* defined(ENABLE_JAVASE) */
 404
 405
 406 /* class_load_attributes *******************************************************
 407
 408    Read attributes from ClassFile.
 409
 410    attribute_info {
 411        u2 attribute_name_index;
 412        u4 attribute_length;
 413        u1 info[attribute_length];
 414    }
 415
 416    InnerClasses_attribute {
 417        u2 attribute_name_index;
 418        u4 attribute_length;
 419    }
 420
 421 *******************************************************************************/
 422
 423 bool class_load_attributes(classbuffer *cb)
 424 {
 425         classinfo *c;
 426         u4         i, j;
 427         u2         attributes_count;
 428         u2         attribute_name_index;
 429         utf       *attribute_name;
 430
 431         c = cb->class;
 432
 433         /* get attributes count */
 434
 435         if (!suck_check_classbuffer_size(cb, 2))
 436                 return false;
 437
 438         attributes_count = suck_u2(cb);
 439
 440         for (i = 0; i < attributes_count; i++) {
 441                 /* get attribute name */
 442
 443                 if (!suck_check_classbuffer_size(cb, 2))
 444                         return false;
 445
 446                 attribute_name_index = suck_u2(cb);
 447                 attribute_name =
 448                         class_getconstant(c, attribute_name_index, CONSTANT_Utf8);
 449
 450                 if (attribute_name == NULL)
 451                         return false;
 452
 453                 if (attribute_name == utf_InnerClasses) {
 454                         /* InnerClasses */
 455
 456                         if (c->innerclass != NULL) {
 457                                 exceptions_throw_classformaterror(c, "Multiple InnerClasses attributes");
 458                                 return false;
 459                         }
 460
 461                         if (!suck_check_classbuffer_size(cb, 4 + 2))
 462                                 return false;
 463
 464                         /* skip attribute length */
 465                         suck_u4(cb);
 466
 467                         /* number of records */
 468                         c->innerclasscount = suck_u2(cb);
 469
 470                         if (!suck_check_classbuffer_size(cb, (2 + 2 + 2 + 2) * c->innerclasscount))
 471                                 return false;
 472
 473                         /* allocate memory for innerclass structure */
 474                         c->innerclass = MNEW(innerclassinfo, c->innerclasscount);
 475
 476                         for (j = 0; j < c->innerclasscount; j++) {
 477                                 /* The innerclass structure contains a class with an encoded
 478                                    name, its defining scope, its simple name and a bitmask of
 479                                    the access flags. If an inner class is not a member, its
 480                                    outer_class is NULL, if a class is anonymous, its name is
 481                                    NULL. */
 482
 483                                 innerclassinfo *info = c->innerclass + j;
 484
 485                                 info->inner_class.ref =
 486                                         innerclass_getconstant(c, suck_u2(cb), CONSTANT_Class);
 487                                 info->outer_class.ref =
 488                                         innerclass_getconstant(c, suck_u2(cb), CONSTANT_Class);
 489                                 info->name =
 490                                         innerclass_getconstant(c, suck_u2(cb), CONSTANT_Utf8);
 491                                 info->flags = suck_u2(cb);
 492                         }
 493                 }
 494                 else if (attribute_name == utf_SourceFile) {
 495                         /* SourceFile */
 496
 497                         if (!class_load_attribute_sourcefile(cb))
 498                                 return false;
 499                 }
 500 #if defined(ENABLE_JAVASE)
 501                 else if (attribute_name == utf_EnclosingMethod) {
 502                         /* EnclosingMethod */
 503
 504                         if (!class_load_attribute_enclosingmethod(cb))
 505                                 return false;
 506                 }
 507                 else if (attribute_name == utf_Signature) {
 508                         /* Signature */
 509
 510                         if (!loader_load_attribute_signature(cb, &(c->signature)))
 511                                 return false;
 512                 }
 513 #if 0
 514                 /* XXX We can't do a release with that enabled */
 515
 516                 else if (attribute_name == utf_RuntimeVisibleAnnotations) {
 517                         /* RuntimeVisibleAnnotations */
 518
 519                         if (!annotation_load_attribute_runtimevisibleannotations(cb))
 520                                 return false;
 521                 }
 522 #endif
 523 #endif
 524                 else {
 525                         /* unknown attribute */
 526
 527                         if (!loader_skip_attribute_body(cb))
 528                                 return false;
 529                 }
 530         }
 531
 532         return true;
 533 }
 534
 535
 536 /* class_freepool **************************************************************
 537
 538         Frees all resources used by this classes Constant Pool.
 539
 540 *******************************************************************************/
 541
 542 static void class_freecpool(classinfo *c)
 543 {
 544         u4 idx;
 545         u4 tag;
 546         voidptr info;
 547
 548         if (c->cptags && c->cpinfos) {
 549                 for (idx = 0; idx < c->cpcount; idx++) {
 550                         tag = c->cptags[idx];
 551                         info = c->cpinfos[idx];
 552
 553                         if (info != NULL) {
 554                                 switch (tag) {
 555                                 case CONSTANT_Fieldref:
 556                                 case CONSTANT_Methodref:
 557                                 case CONSTANT_InterfaceMethodref:
 558                                         FREE(info, constant_FMIref);
 559                                         break;
 560                                 case CONSTANT_Integer:
 561                                         FREE(info, constant_integer);
 562                                         break;
 563                                 case CONSTANT_Float:
 564                                         FREE(info, constant_float);
 565                                         break;
 566                                 case CONSTANT_Long:
 567                                         FREE(info, constant_long);
 568                                         break;
 569                                 case CONSTANT_Double:
 570                                         FREE(info, constant_double);
 571                                         break;
 572                                 case CONSTANT_NameAndType:
 573                                         FREE(info, constant_nameandtype);
 574                                         break;
 575                                 }
 576                         }
 577                 }
 578         }
 579
 580         if (c->cptags)
 581                 MFREE(c->cptags, u1, c->cpcount);
 582
 583         if (c->cpinfos)
 584                 MFREE(c->cpinfos, voidptr, c->cpcount);
 585 }
 586
 587
 588 /* class_getconstant ***********************************************************
 589
 590    Retrieves the value at position 'pos' of the constantpool of a
 591    class. If the type of the value is other than 'ctype', an error is
 592    thrown.
 593
 594 *******************************************************************************/
 595
 596 voidptr class_getconstant(classinfo *c, u4 pos, u4 ctype)
 597 {
 598         /* check index and type of constantpool entry */
 599         /* (pos == 0 is caught by type comparison) */
 600
 601         if ((pos >= c->cpcount) || (c->cptags[pos] != ctype)) {
 602                 exceptions_throw_classformaterror(c, "Illegal constant pool index");
 603                 return NULL;
 604         }
 605
 606         return c->cpinfos[pos];
 607 }
 608
 609
 610 /* innerclass_getconstant ******************************************************
 611
 612    Like class_getconstant, but if cptags is ZERO, null is returned.
 613
 614 *******************************************************************************/
 615
 616 voidptr innerclass_getconstant(classinfo *c, u4 pos, u4 ctype)
 617 {
 618         /* invalid position in constantpool */
 619
 620         if (pos >= c->cpcount) {
 621                 exceptions_throw_classformaterror(c, "Illegal constant pool index");
 622                 return NULL;
 623         }
 624
 625         /* constantpool entry of type 0 */
 626
 627         if (c->cptags[pos] == 0)
 628                 return NULL;
 629
 630         /* check type of constantpool entry */
 631
 632         if (c->cptags[pos] != ctype) {
 633                 exceptions_throw_classformaterror(c, "Illegal constant pool index");
 634                 return NULL;
 635         }
 636
 637         return c->cpinfos[pos];
 638 }
 639
 640
 641 /* class_free ******************************************************************
 642
 643    Frees all resources used by the class.
 644
 645 *******************************************************************************/
 646
 647 void class_free(classinfo *c)
 648 {
 649         s4 i;
 650         vftbl_t *v;
 651
 652         class_freecpool(c);
 653
 654         if (c->interfaces)
 655                 MFREE(c->interfaces, classinfo*, c->interfacescount);
 656
 657         if (c->fields) {
 658                 for (i = 0; i < c->fieldscount; i++)
 659                         field_free(&(c->fields[i]));
 660 #if defined(ENABLE_CACAO_GC)
 661                 MFREE(c->fields, fieldinfo, c->fieldscount);
 662 #endif
 663         }
 664
 665         if (c->methods) {
 666                 for (i = 0; i < c->methodscount; i++)
 667                         method_free(&(c->methods[i]));
 668                 MFREE(c->methods, methodinfo, c->methodscount);
 669         }
 670
 671         if ((v = c->vftbl) != NULL) {
 672                 if (v->arraydesc)
 673                         mem_free(v->arraydesc,sizeof(arraydescriptor));
 674
 675                 for (i = 0; i < v->interfacetablelength; i++) {
 676                         MFREE(v->interfacetable[-i], methodptr, v->interfacevftbllength[i]);
 677                 }
 678                 MFREE(v->interfacevftbllength, s4, v->interfacetablelength);
 679
 680                 i = sizeof(vftbl_t) + sizeof(methodptr) * (v->vftbllength - 1) +
 681                     sizeof(methodptr*) * (v->interfacetablelength -
 682                                          (v->interfacetablelength > 0));
 683                 v = (vftbl_t*) (((methodptr*) v) -
 684                                                 (v->interfacetablelength - 1) * (v->interfacetablelength > 1));
 685                 mem_free(v, i);
 686         }
 687
 688         if (c->innerclass)
 689                 MFREE(c->innerclass, innerclassinfo, c->innerclasscount);
 690
 691         /*      if (c->classvftbl)
 692                 mem_free(c->header.vftbl, sizeof(vftbl) + sizeof(methodptr)*(c->vftbl->vftbllength-1)); */
 693
 694 /*      GCFREE(c); */
 695 }
 696
 697
 698 /* get_array_class *************************************************************
 699
 700    Returns the array class with the given name for the given
 701    classloader, or NULL if an exception occurred.
 702
 703    Note: This function does eager loading.
 704
 705 *******************************************************************************/
 706
 707 static classinfo *get_array_class(utf *name,java_objectheader *initloader,
 708                                                                                         java_objectheader *defloader,bool link)
 709 {
 710         classinfo *c;
 711
 712         /* lookup this class in the classcache */
 713         c = classcache_lookup(initloader,name);
 714         if (!c)
 715                 c = classcache_lookup_defined(defloader,name);
 716
 717         if (!c) {
 718                 /* we have to create it */
 719                 c = class_create_classinfo(name);
 720                 c = load_newly_created_array(c,initloader);
 721                 if (c == NULL)
 722                         return NULL;
 723         }
 724
 725         assert(c);
 726         assert(c->state & CLASS_LOADED);
 727         assert(c->classloader == defloader);
 728
 729         if (link && !(c->state & CLASS_LINKED))
 730                 if (!link_class(c))
 731                         return NULL;
 732
 733         assert(!link || (c->state & CLASS_LINKED));
 734
 735         return c;
 736 }
 737
 738
 739 /* class_array_of **************************************************************
 740
 741    Returns an array class with the given component class. The array
 742    class is dynamically created if neccessary.
 743
 744 *******************************************************************************/
 745
 746 classinfo *class_array_of(classinfo *component, bool link)
 747 {
 748     s4 namelen;
 749     char *namebuf;
 750         s4 dumpsize;
 751         classinfo *c;
 752
 753         dumpsize = dump_size();
 754
 755     /* Assemble the array class name */
 756     namelen = component->name->blength;
 757
 758     if (component->name->text[0] == '[') {
 759         /* the component is itself an array */
 760         namebuf = DMNEW(char, namelen + 1);
 761         namebuf[0] = '[';
 762         MCOPY(namebuf + 1, component->name->text, char, namelen);
 763         namelen++;
 764
 765     } else {
 766         /* the component is a non-array class */
 767         namebuf = DMNEW(char, namelen + 3);
 768         namebuf[0] = '[';
 769         namebuf[1] = 'L';
 770         MCOPY(namebuf + 2, component->name->text, char, namelen);
 771         namebuf[2 + namelen] = ';';
 772         namelen += 3;
 773     }
 774
 775         c = get_array_class(utf_new(namebuf, namelen),
 776                                                 component->classloader,
 777                                                 component->classloader,
 778                                                 link);
 779
 780         dump_release(dumpsize);
 781
 782         return c;
 783 }
 784
 785
 786 /* class_multiarray_of *********************************************************
 787
 788    Returns an array class with the given dimension and element class.
 789    The array class is dynamically created if neccessary.
 790
 791 *******************************************************************************/
 792
 793 classinfo *class_multiarray_of(s4 dim, classinfo *element, bool link)
 794 {
 795     s4 namelen;
 796     char *namebuf;
 797         s4 dumpsize;
 798         classinfo *c;
 799
 800         dumpsize = dump_size();
 801
 802         if (dim < 1) {
 803                 log_text("Invalid array dimension requested");
 804                 assert(0);
 805         }
 806
 807     /* Assemble the array class name */
 808     namelen = element->name->blength;
 809
 810     if (element->name->text[0] == '[') {
 811         /* the element is itself an array */
 812         namebuf = DMNEW(char, namelen + dim);
 813         memcpy(namebuf + dim, element->name->text, namelen);
 814         namelen += dim;
 815     }
 816     else {
 817         /* the element is a non-array class */
 818         namebuf = DMNEW(char, namelen + 2 + dim);
 819         namebuf[dim] = 'L';
 820         memcpy(namebuf + dim + 1, element->name->text, namelen);
 821         namelen += (2 + dim);
 822         namebuf[namelen - 1] = ';';
 823     }
 824         memset(namebuf, '[', dim);
 825
 826         c = get_array_class(utf_new(namebuf, namelen),
 827                                                 element->classloader,
 828                                                 element->classloader,
 829                                                 link);
 830
 831         dump_release(dumpsize);
 832
 833         return c;
 834 }
 835
 836
 837 /* class_lookup_classref *******************************************************
 838
 839    Looks up the constant_classref for a given classname in the classref
 840    tables of a class.
 841
 842    IN:
 843        cls..............the class containing the reference
 844            name.............the name of the class refered to
 845
 846     RETURN VALUE:
 847            a pointer to a constant_classref, or
 848            NULL if the reference was not found
 849
 850 *******************************************************************************/
 851
 852 constant_classref *class_lookup_classref(classinfo *cls, utf *name)
 853 {
 854         constant_classref *ref;
 855         extra_classref *xref;
 856         int count;
 857
 858         assert(cls);
 859         assert(name);
 860         assert(!cls->classrefcount || cls->classrefs);
 861
 862         /* first search the main classref table */
 863         count = cls->classrefcount;
 864         ref = cls->classrefs;
 865         for (; count; --count, ++ref)
 866                 if (ref->name == name)
 867                         return ref;
 868
 869         /* next try the list of extra classrefs */
 870         for (xref = cls->extclassrefs; xref; xref = xref->next) {
 871                 if (xref->classref.name == name)
 872                         return &(xref->classref);
 873         }
 874
 875         /* not found */
 876         return NULL;
 877 }
 878
 879
 880 /* class_get_classref **********************************************************
 881
 882    Returns the constant_classref for a given classname.
 883
 884    IN:
 885        cls..............the class containing the reference
 886            name.............the name of the class refered to
 887
 888    RETURN VALUE:
 889        a pointer to a constant_classref (never NULL)
 890
 891    NOTE:
 892        The given name is not checked for validity!
 893
 894 *******************************************************************************/
 895
 896 constant_classref *class_get_classref(classinfo *cls, utf *name)
 897 {
 898         constant_classref *ref;
 899         extra_classref *xref;
 900
 901         assert(cls);
 902         assert(name);
 903
 904         ref = class_lookup_classref(cls,name);
 905         if (ref)
 906                 return ref;
 907
 908         xref = NEW(extra_classref);
 909         CLASSREF_INIT(xref->classref,cls,name);
 910
 911         xref->next = cls->extclassrefs;
 912         cls->extclassrefs = xref;
 913
 914         return &(xref->classref);
 915 }
 916
 917
 918 /* class_get_self_classref *****************************************************
 919
 920    Returns the constant_classref to the class itself.
 921
 922    IN:
 923        cls..............the class containing the reference
 924
 925    RETURN VALUE:
 926        a pointer to a constant_classref (never NULL)
 927
 928 *******************************************************************************/
 929
 930 constant_classref *class_get_self_classref(classinfo *cls)
 931 {
 932         /* XXX this should be done in a faster way. Maybe always make */
 933         /* the classref of index 0 a self reference.                  */
 934         return class_get_classref(cls,cls->name);
 935 }
 936
 937 /* class_get_classref_multiarray_of ********************************************
 938
 939    Returns an array type reference with the given dimension and element class
 940    reference.
 941
 942    IN:
 943        dim..............the requested dimension
 944                             dim must be in [1;255]. This is NOT checked!
 945            ref..............the component class reference
 946
 947    RETURN VALUE:
 948        a pointer to the class reference for the array type
 949
 950    NOTE:
 951        The referer of `ref` is used as the referer for the new classref.
 952
 953 *******************************************************************************/
 954
 955 constant_classref *class_get_classref_multiarray_of(s4 dim, constant_classref *ref)
 956 {
 957     s4 namelen;
 958     char *namebuf;
 959         s4 dumpsize;
 960         constant_classref *cr;
 961
 962         assert(ref);
 963         assert(dim >= 1 && dim <= 255);
 964
 965         dumpsize = dump_size();
 966
 967     /* Assemble the array class name */
 968     namelen = ref->name->blength;
 969
 970     if (ref->name->text[0] == '[') {
 971         /* the element is itself an array */
 972         namebuf = DMNEW(char, namelen + dim);
 973         memcpy(namebuf + dim, ref->name->text, namelen);
 974         namelen += dim;
 975     }
 976     else {
 977         /* the element is a non-array class */
 978         namebuf = DMNEW(char, namelen + 2 + dim);
 979         namebuf[dim] = 'L';
 980         memcpy(namebuf + dim + 1, ref->name->text, namelen);
 981         namelen += (2 + dim);
 982         namebuf[namelen - 1] = ';';
 983     }
 984         memset(namebuf, '[', dim);
 985
 986     cr = class_get_classref(ref->referer,utf_new(namebuf, namelen));
 987
 988         dump_release(dumpsize);
 989
 990         return cr;
 991 }
 992
 993
 994 /* class_get_classref_component_of *********************************************
 995
 996    Returns the component classref of a given array type reference
 997
 998    IN:
 999        ref..............the array type reference
1000
1001    RETURN VALUE:
1002        a reference to the component class, or
1003            NULL if `ref` is not an object array type reference
1004
1005    NOTE:
1006        The referer of `ref` is used as the referer for the new classref.
1007
1008 *******************************************************************************/
1009
1010 constant_classref *class_get_classref_component_of(constant_classref *ref)
1011 {
1012         s4 namelen;
1013         char *name;
1014
1015         assert(ref);
1016
1017         name = ref->name->text;
1018         if (*name++ != '[')
1019                 return NULL;
1020
1021         namelen = ref->name->blength - 1;
1022         if (*name == 'L') {
1023                 name++;
1024                 namelen -= 2;
1025         }
1026         else if (*name != '[') {
1027                 return NULL;
1028         }
1029
1030     return class_get_classref(ref->referer, utf_new(name, namelen));
1031 }
1032
1033
1034 /* class_findmethod ************************************************************
1035
1036    Searches a 'classinfo' structure for a method having the given name
1037    and descriptor. If descriptor is NULL, it is ignored.
1038
1039 *******************************************************************************/
1040
1041 methodinfo *class_findmethod(classinfo *c, utf *name, utf *desc)
1042 {
1043         methodinfo *m;
1044         s4          i;
1045
1046         for (i = 0; i < c->methodscount; i++) {
1047                 m = &(c->methods[i]);
1048
1049                 if ((m->name == name) && ((desc == NULL) || (m->descriptor == desc)))
1050                         return m;
1051         }
1052
1053         return NULL;
1054 }
1055
1056
1057 /* class_resolvemethod *********************************************************
1058
1059    Searches a class and it's super classes for a method.
1060
1061    Superinterfaces are *not* searched.
1062
1063 *******************************************************************************/
1064
1065 methodinfo *class_resolvemethod(classinfo *c, utf *name, utf *desc)
1066 {
1067         methodinfo *m;
1068
1069         while (c) {
1070                 m = class_findmethod(c, name, desc);
1071
1072                 if (m)
1073                         return m;
1074
1075                 /* JVM Specification bug:
1076
1077                    It is important NOT to resolve special <init> and <clinit>
1078                    methods to super classes or interfaces; yet, this is not
1079                    explicited in the specification.  Section 5.4.3.3 should be
1080                    updated appropriately.  */
1081
1082                 if (name == utf_init || name == utf_clinit)
1083                         return NULL;
1084
1085                 c = c->super.cls;
1086         }
1087
1088         return NULL;
1089 }
1090
1091
1092 /* class_resolveinterfacemethod_intern *****************************************
1093
1094    Internally used helper function. Do not use this directly.
1095
1096 *******************************************************************************/
1097
1098 static methodinfo *class_resolveinterfacemethod_intern(classinfo *c,
1099                                                                                                            utf *name, utf *desc)
1100 {
1101         methodinfo *m;
1102         s4          i;
1103
1104         /* try to find the method in the class */
1105
1106         m = class_findmethod(c, name, desc);
1107
1108         if (m != NULL)
1109                 return m;
1110
1111         /* no method found? try the superinterfaces */
1112
1113         for (i = 0; i < c->interfacescount; i++) {
1114                 m = class_resolveinterfacemethod_intern(c->interfaces[i].cls,
1115                                                                                                         name, desc);
1116
1117                 if (m != NULL)
1118                         return m;
1119         }
1120
1121         /* no method found */
1122
1123         return NULL;
1124 }
1125
1126
1127 /* class_resolveclassmethod ****************************************************
1128
1129    Resolves a reference from REFERER to a method with NAME and DESC in
1130    class C.
1131
1132    If the method cannot be resolved the return value is NULL. If
1133    EXCEPT is true *exceptionptr is set, too.
1134
1135 *******************************************************************************/
1136
1137 methodinfo *class_resolveclassmethod(classinfo *c, utf *name, utf *desc,
1138                                                                          classinfo *referer, bool throwexception)
1139 {
1140         classinfo  *cls;
1141         methodinfo *m;
1142         s4          i;
1143
1144 /*      if (c->flags & ACC_INTERFACE) { */
1145 /*              if (throwexception) */
1146 /*                      *exceptionptr = */
1147 /*                              new_exception(string_java_lang_IncompatibleClassChangeError); */
1148 /*              return NULL; */
1149 /*      } */
1150
1151         /* try class c and its superclasses */
1152
1153         cls = c;
1154
1155         m = class_resolvemethod(cls, name, desc);
1156
1157         if (m != NULL)
1158                 goto found;
1159
1160         /* try the superinterfaces */
1161
1162         for (i = 0; i < c->interfacescount; i++) {
1163                 m = class_resolveinterfacemethod_intern(c->interfaces[i].cls,
1164                                                                                                 name, desc);
1165
1166                 if (m != NULL)
1167                         goto found;
1168         }
1169
1170         if (throwexception)
1171                 exceptions_throw_nosuchmethoderror(c, name, desc);
1172
1173         return NULL;
1174
1175  found:
1176         if ((m->flags & ACC_ABSTRACT) && !(c->flags & ACC_ABSTRACT)) {
1177                 if (throwexception)
1178                         exceptions_throw_abstractmethoderror();
1179
1180                 return NULL;
1181         }
1182
1183         /* XXX check access rights */
1184
1185         return m;
1186 }
1187
1188
1189 /* class_resolveinterfacemethod ************************************************
1190
1191    Resolves a reference from REFERER to a method with NAME and DESC in
1192    interface C.
1193
1194    If the method cannot be resolved the return value is NULL. If
1195    EXCEPT is true *exceptionptr is set, too.
1196
1197 *******************************************************************************/
1198
1199 methodinfo *class_resolveinterfacemethod(classinfo *c, utf *name, utf *desc,
1200                                                                                  classinfo *referer, bool throwexception)
1201 {
1202         methodinfo *mi;
1203
1204         if (!(c->flags & ACC_INTERFACE)) {
1205                 if (throwexception)
1206                         exceptions_throw_incompatibleclasschangeerror(c, "Not an interface");
1207
1208                 return NULL;
1209         }
1210
1211         mi = class_resolveinterfacemethod_intern(c, name, desc);
1212
1213         if (mi != NULL)
1214                 return mi;
1215
1216         /* try class java.lang.Object */
1217
1218         mi = class_findmethod(class_java_lang_Object, name, desc);
1219
1220         if (mi != NULL)
1221                 return mi;
1222
1223         if (throwexception)
1224                 exceptions_throw_nosuchmethoderror(c, name, desc);
1225
1226         return NULL;
1227 }
1228
1229
1230 /* class_findfield *************************************************************
1231
1232    Searches for field with specified name and type in a classinfo
1233    structure. If no such field is found NULL is returned.
1234
1235 *******************************************************************************/
1236
1237 fieldinfo *class_findfield(classinfo *c, utf *name, utf *desc)
1238 {
1239         s4 i;
1240
1241         for (i = 0; i < c->fieldscount; i++)
1242                 if ((c->fields[i].name == name) && (c->fields[i].descriptor == desc))
1243                         return &(c->fields[i]);
1244
1245         if (c->super.cls)
1246                 return class_findfield(c->super.cls, name, desc);
1247
1248         return NULL;
1249 }
1250
1251
1252 /* class_findfield_approx ******************************************************
1253
1254    Searches in 'classinfo'-structure for a field with the specified
1255    name.
1256
1257 *******************************************************************************/
1258
1259 fieldinfo *class_findfield_by_name(classinfo *c, utf *name)
1260 {
1261         s4 i;
1262
1263         /* get field index */
1264
1265         i = class_findfield_index_by_name(c, name);
1266
1267         /* field was not found, return */
1268
1269         if (i == -1)
1270                 return NULL;
1271
1272         /* return field address */
1273
1274         return &(c->fields[i]);
1275 }
1276
1277
1278 s4 class_findfield_index_by_name(classinfo *c, utf *name)
1279 {
1280         s4 i;
1281
1282         for (i = 0; i < c->fieldscount; i++) {
1283                 /* compare field names */
1284
1285                 if ((c->fields[i].name == name))
1286                         return i;
1287         }
1288
1289         /* field was not found, raise exception */
1290
1291         exceptions_throw_nosuchfielderror(c, name);
1292
1293         return -1;
1294 }
1295
1296
1297 /****************** Function: class_resolvefield_int ***************************
1298
1299     This is an internally used helper function. Do not use this directly.
1300
1301         Tries to resolve a field having the given name and type.
1302     If the field cannot be resolved, NULL is returned.
1303
1304 *******************************************************************************/
1305
1306 static fieldinfo *class_resolvefield_int(classinfo *c, utf *name, utf *desc)
1307 {
1308         fieldinfo *fi;
1309         s4         i;
1310
1311         /* search for field in class c */
1312
1313         for (i = 0; i < c->fieldscount; i++) {
1314                 if ((c->fields[i].name == name) && (c->fields[i].descriptor == desc)) {
1315                         return &(c->fields[i]);
1316                 }
1317     }
1318
1319         /* try superinterfaces recursively */
1320
1321         for (i = 0; i < c->interfacescount; i++) {
1322                 fi = class_resolvefield_int(c->interfaces[i].cls, name, desc);
1323                 if (fi)
1324                         return fi;
1325         }
1326
1327         /* try superclass */
1328
1329         if (c->super.cls)
1330                 return class_resolvefield_int(c->super.cls, name, desc);
1331
1332         /* not found */
1333
1334         return NULL;
1335 }
1336
1337
1338 /********************* Function: class_resolvefield ***************************
1339
1340         Resolves a reference from REFERER to a field with NAME and DESC in class C.
1341
1342     If the field cannot be resolved the return value is NULL. If EXCEPT is
1343     true *exceptionptr is set, too.
1344
1345 *******************************************************************************/
1346
1347 fieldinfo *class_resolvefield(classinfo *c, utf *name, utf *desc,
1348                                                           classinfo *referer, bool throwexception)
1349 {
1350         fieldinfo *fi;
1351
1352         fi = class_resolvefield_int(c, name, desc);
1353
1354         if (!fi) {
1355                 if (throwexception)
1356                         exceptions_throw_nosuchfielderror(c, name);
1357
1358                 return NULL;
1359         }
1360
1361         /* XXX check access rights */
1362
1363         return fi;
1364 }
1365
1366
1367 /* class_is_primitive **********************************************************
1368
1369    Check if the given class is a primitive class.
1370
1371 *******************************************************************************/
1372
1373 bool class_is_primitive(classinfo *c)
1374 {
1375         s4 i;
1376
1377         /* search table of primitive classes */
1378
1379         for (i = 0; i < PRIMITIVETYPE_COUNT; i++)
1380                 if (primitivetype_table[i].class_primitive == c)
1381                         return true;
1382
1383         return false;
1384 }
1385
1386
1387 /* class_issubclass ************************************************************
1388
1389    Checks if sub is a descendant of super.
1390
1391 *******************************************************************************/
1392
1393 bool class_issubclass(classinfo *sub, classinfo *super)
1394 {
1395         for (;;) {
1396                 if (!sub)
1397                         return false;
1398
1399                 if (sub == super)
1400                         return true;
1401
1402                 sub = sub->super.cls;
1403         }
1404 }
1405
1406
1407 /* class_isanysubclass *********************************************************
1408
1409    Checks a subclass relation between two classes. Implemented
1410    interfaces are interpreted as super classes.
1411
1412    Return value: 1 ... sub is subclass of super
1413                  0 ... otherwise
1414
1415 *******************************************************************************/
1416
1417 bool class_isanysubclass(classinfo *sub, classinfo *super)
1418 {
1419         castinfo classvalues;
1420         u4       diffval;
1421         bool     result;
1422
1423         /* This is the trivial case. */
1424
1425         if (sub == super)
1426                 return true;
1427
1428         /* Primitive classes are only subclasses of themselves. */
1429
1430         if ((sub->flags & ACC_CLASS_PRIMITIVE) ||
1431                 (super->flags & ACC_CLASS_PRIMITIVE))
1432                 return false;
1433
1434         /* Check for interfaces. */
1435
1436         if (super->flags & ACC_INTERFACE) {
1437                 result = (sub->vftbl->interfacetablelength > super->index) &&
1438                         (sub->vftbl->interfacetable[-super->index] != NULL);
1439         }
1440         else {
1441                 /* java.lang.Object is the only super class of any
1442                    interface. */
1443
1444                 if (sub->flags & ACC_INTERFACE)
1445                         return (super == class_java_lang_Object);
1446
1447                 ASM_GETCLASSVALUES_ATOMIC(super->vftbl, sub->vftbl, &classvalues);
1448
1449                 diffval = classvalues.sub_baseval - classvalues.super_baseval;
1450                 result  = diffval <= (u4) classvalues.super_diffval;
1451         }
1452
1453         return result;
1454 }
1455
1456
1457 /* class_printflags ************************************************************
1458
1459    Prints flags of a class.
1460
1461 *******************************************************************************/
1462
1463 #if !defined(NDEBUG)
1464 void class_printflags(classinfo *c)
1465 {
1466         if (c == NULL) {
1467                 printf("NULL");
1468                 return;
1469         }
1470
1471         if (c->flags & ACC_PUBLIC)       printf(" PUBLIC");
1472         if (c->flags & ACC_PRIVATE)      printf(" PRIVATE");
1473         if (c->flags & ACC_PROTECTED)    printf(" PROTECTED");
1474         if (c->flags & ACC_STATIC)       printf(" STATIC");
1475         if (c->flags & ACC_FINAL)        printf(" FINAL");
1476         if (c->flags & ACC_SYNCHRONIZED) printf(" SYNCHRONIZED");
1477         if (c->flags & ACC_VOLATILE)     printf(" VOLATILE");
1478         if (c->flags & ACC_TRANSIENT)    printf(" TRANSIENT");
1479         if (c->flags & ACC_NATIVE)       printf(" NATIVE");
1480         if (c->flags & ACC_INTERFACE)    printf(" INTERFACE");
1481         if (c->flags & ACC_ABSTRACT)     printf(" ABSTRACT");
1482 }
1483 #endif
1484
1485
1486 /* class_print *****************************************************************
1487
1488    Prints classname plus flags.
1489
1490 *******************************************************************************/
1491
1492 #if !defined(NDEBUG)
1493 void class_print(classinfo *c)
1494 {
1495         if (c == NULL) {
1496                 printf("NULL");
1497                 return;
1498         }
1499
1500         utf_display_printable_ascii(c->name);
1501         class_printflags(c);
1502 }
1503 #endif
1504
1505
1506 /* class_classref_print ********************************************************
1507
1508    Prints classname plus referer class.
1509
1510 *******************************************************************************/
1511
1512 #if !defined(NDEBUG)
1513 void class_classref_print(constant_classref *cr)
1514 {
1515         if (cr == NULL) {
1516                 printf("NULL");
1517                 return;
1518         }
1519
1520         utf_display_printable_ascii(cr->name);
1521         printf("(ref.by ");
1522         if (cr->referer)
1523                 class_print(cr->referer);
1524         else
1525                 printf("NULL");
1526         printf(")");
1527 }
1528 #endif
1529
1530
1531 /* class_println ***************************************************************
1532
1533    Prints classname plus flags and new line.
1534
1535 *******************************************************************************/
1536
1537 #if !defined(NDEBUG)
1538 void class_println(classinfo *c)
1539 {
1540         class_print(c);
1541         printf("\n");
1542 }
1543 #endif
1544
1545
1546 /* class_classref_println ******************************************************
1547
1548    Prints classname plus referer class and new line.
1549
1550 *******************************************************************************/
1551
1552 #if !defined(NDEBUG)
1553 void class_classref_println(constant_classref *cr)
1554 {
1555         class_classref_print(cr);
1556         printf("\n");
1557 }
1558 #endif
1559
1560
1561 /* class_classref_or_classinfo_print *******************************************
1562
1563    Prints classname plus referer class.
1564
1565 *******************************************************************************/
1566
1567 #if !defined(NDEBUG)
1568 void class_classref_or_classinfo_print(classref_or_classinfo c)
1569 {
1570         if (c.any == NULL) {
1571                 printf("(classref_or_classinfo) NULL");
1572                 return;
1573         }
1574         if (IS_CLASSREF(c))
1575                 class_classref_print(c.ref);
1576         else
1577                 class_print(c.cls);
1578 }
1579 #endif
1580
1581
1582 /* class_classref_or_classinfo_println *****************************************
1583
1584    Prints classname plus referer class and a newline.
1585
1586 *******************************************************************************/
1587
1588 void class_classref_or_classinfo_println(classref_or_classinfo c)
1589 {
1590         class_classref_or_classinfo_println(c);
1591         printf("\n");
1592 }
1593
1594
1595 /* class_showconstantpool ******************************************************
1596
1597    Dump the constant pool of the given class to stdout.
1598
1599 *******************************************************************************/
1600
1601 #if !defined(NDEBUG)
1602 void class_showconstantpool (classinfo *c)
1603 {
1604         u4 i;
1605         voidptr e;
1606
1607         printf ("---- dump of constant pool ----\n");
1608
1609         for (i=0; i<c->cpcount; i++) {
1610                 printf ("#%d:  ", (int) i);
1611
1612                 e = c -> cpinfos [i];
1613                 if (e) {
1614
1615                         switch (c -> cptags [i]) {
1616                         case CONSTANT_Class:
1617                                 printf ("Classreference -> ");
1618                                 utf_display_printable_ascii ( ((constant_classref*)e) -> name );
1619                                 break;
1620                         case CONSTANT_Fieldref:
1621                                 printf ("Fieldref -> ");
1622                                 field_fieldref_print((constant_FMIref *) e);
1623                                 break;
1624                         case CONSTANT_Methodref:
1625                                 printf ("Methodref -> ");
1626                                 method_methodref_print((constant_FMIref *) e);
1627                                 break;
1628                         case CONSTANT_InterfaceMethodref:
1629                                 printf ("InterfaceMethod -> ");
1630                                 method_methodref_print((constant_FMIref *) e);
1631                                 break;
1632                         case CONSTANT_String:
1633                                 printf ("String -> ");
1634                                 utf_display_printable_ascii (e);
1635                                 break;
1636                         case CONSTANT_Integer:
1637                                 printf ("Integer -> %d", (int) ( ((constant_integer*)e) -> value) );
1638                                 break;
1639                         case CONSTANT_Float:
1640                                 printf ("Float -> %f", ((constant_float*)e) -> value);
1641                                 break;
1642                         case CONSTANT_Double:
1643                                 printf ("Double -> %f", ((constant_double*)e) -> value);
1644                                 break;
1645                         case CONSTANT_Long:
1646                                 {
1647                                         u8 v = ((constant_long*)e) -> value;
1648 #if U8_AVAILABLE
1649                                         printf ("Long -> %ld", (long int) v);
1650 #else
1651                                         printf ("Long -> HI: %ld, LO: %ld\n",
1652                                                         (long int) v.high, (long int) v.low);
1653 #endif
1654                                 }
1655                                 break;
1656                         case CONSTANT_NameAndType:
1657                                 {
1658                                         constant_nameandtype *cnt = e;
1659                                         printf ("NameAndType: ");
1660                                         utf_display_printable_ascii (cnt->name);
1661                                         printf (" ");
1662                                         utf_display_printable_ascii (cnt->descriptor);
1663                                 }
1664                                 break;
1665                         case CONSTANT_Utf8:
1666                                 printf ("Utf8 -> ");
1667                                 utf_display_printable_ascii (e);
1668                                 break;
1669                         default:
1670                                 log_text("Invalid type of ConstantPool-Entry");
1671                                 assert(0);
1672                         }
1673                 }
1674
1675                 printf ("\n");
1676         }
1677 }
1678 #endif /* !defined(NDEBUG) */
1679
1680
1681 /* class_showmethods ***********************************************************
1682
1683    Dump info about the fields and methods of the given class to stdout.
1684
1685 *******************************************************************************/
1686
1687 #if !defined(NDEBUG)
1688 void class_showmethods (classinfo *c)
1689 {
1690         s4 i;
1691
1692         printf("--------- Fields and Methods ----------------\n");
1693         printf("Flags: ");
1694         class_printflags(c);
1695         printf("\n");
1696
1697         printf("This: ");
1698         utf_display_printable_ascii(c->name);
1699         printf("\n");
1700
1701         if (c->super.cls) {
1702                 printf("Super: ");
1703                 utf_display_printable_ascii(c->super.cls->name);
1704                 printf ("\n");
1705         }
1706
1707         printf("Index: %d\n", c->index);
1708
1709         printf("Interfaces:\n");
1710         for (i = 0; i < c->interfacescount; i++) {
1711                 printf("   ");
1712                 utf_display_printable_ascii(c->interfaces[i].cls->name);
1713                 printf (" (%d)\n", c->interfaces[i].cls->index);
1714         }
1715
1716         printf("Fields:\n");
1717         for (i = 0; i < c->fieldscount; i++)
1718                 field_println(&(c->fields[i]));
1719
1720         printf("Methods:\n");
1721         for (i = 0; i < c->methodscount; i++) {
1722                 methodinfo *m = &(c->methods[i]);
1723
1724                 if (!(m->flags & ACC_STATIC))
1725                         printf("vftblindex: %d   ", m->vftblindex);
1726
1727                 method_println(m);
1728         }
1729
1730         printf ("Virtual function table:\n");
1731         for (i = 0; i < c->vftbl->vftbllength; i++)
1732                 printf ("entry: %d,  %ld\n", i, (long int) (c->vftbl->table[i]));
1733 }
1734 #endif /* !defined(NDEBUG) */
1735
1736
1737 /*
1738  * These are local overrides for various environment variables in Emacs.
1739  * Please do not remove this and leave it at the end of the file, where
1740  * Emacs will automagically detect them.
1741  * ---------------------------------------------------------------------
1742  * Local variables:
1743  * mode: c
1744  * indent-tabs-mode: t
1745  * c-basic-offset: 4
1746  * tab-width: 4
1747  * End:
1748  * vim:noexpandtab:sw=4:ts=4:
1749  */