src/native/native.c

   1 /* src/native/native.c - table of native 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: native.c 7941 2007-05-23 11:59:51Z twisti $
  26
  27 */
  28
  29
  30 #include "config.h"
  31
  32 #include <assert.h>
  33 #include <ctype.h>
  34
  35 #if !defined(WITH_STATIC_CLASSPATH)
  36 # include <ltdl.h>
  37 #endif
  38
  39 #include "vm/types.h"
  40
  41 #include "mm/memory.h"
  42
  43 #include "native/jni.h"
  44 #include "native/native.h"
  45
  46 #include "native/vm/nativevm.h"
  47
  48 #include "threads/lock-common.h"
  49
  50 #include "toolbox/avl.h"
  51 #include "toolbox/hashtable.h"
  52 #include "toolbox/logging.h"
  53
  54 #include "vm/builtin.h"
  55 #include "vm/exceptions.h"
  56 #include "vm/global.h"
  57 #include "vm/stringlocal.h"
  58 #include "vm/vm.h"
  59
  60 #include "vm/jit/asmpart.h"
  61 #include "vm/jit/jit.h"
  62
  63 #include "vmcore/loader.h"
  64 #include "vmcore/options.h"
  65 #include "vm/resolve.h"
  66
  67 #if defined(ENABLE_JVMTI)
  68 #include "native/jvmti/cacaodbg.h"
  69 #endif
  70
  71
  72 /* include table of native functions ******************************************/
  73
  74 #if defined(WITH_STATIC_CLASSPATH)
  75 # include "native/nativetable.inc"
  76 #endif
  77
  78
  79 /* tables for methods *********************************************************/
  80
  81 #if defined(WITH_STATIC_CLASSPATH)
  82 #define NATIVETABLESIZE  (sizeof(nativetable)/sizeof(struct nativeref))
  83
  84 /* table for fast string comparison */
  85 static nativecompref nativecomptable[NATIVETABLESIZE];
  86
  87 /* string comparsion table initialized */
  88 static bool nativecompdone = false;
  89 #endif
  90
  91
  92 /* global variables ***********************************************************/
  93
  94 static avl_tree_t *tree_native_methods;
  95 static hashtable *hashtable_library;
  96
  97
  98 /* prototypes *****************************************************************/
  99
 100 static s4 native_tree_native_methods_comparator(const void *treenode, const void *node);
 101
 102
 103 /* native_init *****************************************************************
 104
 105    Initializes the native subsystem.
 106
 107 *******************************************************************************/
 108
 109 bool native_init(void)
 110 {
 111 #if !defined(WITH_STATIC_CLASSPATH)
 112         /* initialize libltdl */
 113
 114         if (lt_dlinit())
 115                 vm_abort("native_init: lt_dlinit failed: %s\n", lt_dlerror());
 116
 117         /* initialize library hashtable, 10 entries should be enough */
 118
 119         hashtable_library = NEW(hashtable);
 120
 121         hashtable_create(hashtable_library, 10);
 122 #endif
 123
 124         /* initialize the native methods table */
 125
 126         tree_native_methods = avl_create(&native_tree_native_methods_comparator);
 127
 128         /* register the intern native functions */
 129
 130         nativevm_init();
 131
 132         /* everything's ok */
 133
 134         return true;
 135 }
 136
 137
 138 /* native_tree_native_methods_comparator ***************************************
 139
 140    Comparison function for AVL tree of native methods.
 141
 142    IN:
 143        treenode....node in the tree
 144            node........node to compare with tree-node
 145
 146    RETURN VALUE:
 147        -1, 0, +1
 148
 149 *******************************************************************************/
 150
 151 static s4 native_tree_native_methods_comparator(const void *treenode, const void *node)
 152 {
 153         const native_methods_node_t *treenmn;
 154         const native_methods_node_t *nmn;
 155
 156         treenmn = treenode;
 157         nmn     = node;
 158
 159         /* these are for walking the tree */
 160
 161         if (treenmn->classname < nmn->classname)
 162                 return -1;
 163         else if (treenmn->classname > nmn->classname)
 164                 return 1;
 165
 166         if (treenmn->name < nmn->name)
 167                 return -1;
 168         else if (treenmn->name > nmn->name)
 169                 return 1;
 170
 171         if (treenmn->descriptor < nmn->descriptor)
 172                 return -1;
 173         else if (treenmn->descriptor > nmn->descriptor)
 174                 return 1;
 175
 176         /* all pointers are equal, we have found the entry */
 177
 178         return 0;
 179 }
 180
 181
 182 /* native_make_overloaded_function *********************************************
 183
 184    XXX
 185
 186 *******************************************************************************/
 187
 188 #if !defined(WITH_STATIC_CLASSPATH)
 189 static utf *native_make_overloaded_function(utf *name, utf *descriptor)
 190 {
 191         char *newname;
 192         s4    namelen;
 193         char *utf_ptr;
 194         u2    c;
 195         s4    i;
 196         s4    dumpsize;
 197         utf  *u;
 198
 199         /* mark memory */
 200
 201         dumpsize = dump_size();
 202
 203         utf_ptr = descriptor->text;
 204         namelen = strlen(name->text) + strlen("__") + strlen("0");
 205
 206         /* calculate additional length */
 207
 208         while ((c = utf_nextu2(&utf_ptr)) != ')') {
 209                 switch (c) {
 210                 case 'Z':
 211                 case 'B':
 212                 case 'C':
 213                 case 'S':
 214                 case 'I':
 215                 case 'J':
 216                 case 'F':
 217                 case 'D':
 218                         namelen++;
 219                         break;
 220                 case '[':
 221                         namelen += 2;
 222                         break;
 223                 case 'L':
 224                         namelen++;
 225                         while (utf_nextu2(&utf_ptr) != ';')
 226                                 namelen++;
 227                         namelen += 2;
 228                         break;
 229                 case '(':
 230                         break;
 231                 default:
 232                         assert(0);
 233                 }
 234         }
 235
 236         /* reallocate memory */
 237
 238         i = strlen(name->text);
 239
 240         newname = DMNEW(char, namelen);
 241         MCOPY(newname, name->text, char, i);
 242
 243         utf_ptr = descriptor->text;
 244
 245         newname[i++] = '_';
 246         newname[i++] = '_';
 247
 248         while ((c = utf_nextu2(&utf_ptr)) != ')') {
 249                 switch (c) {
 250                 case 'Z':
 251                 case 'B':
 252                 case 'C':
 253                 case 'S':
 254                 case 'J':
 255                 case 'I':
 256                 case 'F':
 257                 case 'D':
 258                         newname[i++] = c;
 259                         break;
 260                 case '[':
 261                         newname[i++] = '_';
 262                         newname[i++] = '3';
 263                         break;
 264                 case 'L':
 265                         newname[i++] = 'L';
 266                         while ((c = utf_nextu2(&utf_ptr)) != ';')
 267                                 if (((c >= 'a') && (c <= 'z')) ||
 268                                         ((c >= 'A') && (c <= 'Z')) ||
 269                                         ((c >= '0') && (c <= '9')))
 270                                         newname[i++] = c;
 271                                 else
 272                                         newname[i++] = '_';
 273                         newname[i++] = '_';
 274                         newname[i++] = '2';
 275                         break;
 276                 case '(':
 277                         break;
 278                 default:
 279                         assert(0);
 280                 }
 281         }
 282
 283         /* close string */
 284
 285         newname[i] = '\0';
 286
 287         /* make a utf-string */
 288
 289         u = utf_new_char(newname);
 290
 291         /* release memory */
 292
 293         dump_release(dumpsize);
 294
 295         return u;
 296 }
 297
 298
 299 /* native_insert_char **********************************************************
 300
 301    Inserts the passed UTF character into the native method name.  If
 302    necessary it is escaped properly.
 303
 304 *******************************************************************************/
 305
 306 static s4 native_insert_char(char *name, u4 pos, u2 c)
 307 {
 308         s4 val;
 309         s4 i;
 310
 311         switch (c) {
 312         case '/':
 313         case '.':
 314                 /* replace '/' or '.' with '_' */
 315                 name[pos] = '_';
 316                 break;
 317
 318         case '_':
 319                 /* escape sequence for '_' is '_1' */
 320                 name[pos]   = '_';
 321                 name[++pos] = '1';
 322                 break;
 323
 324         case ';':
 325                 /* escape sequence for ';' is '_2' */
 326                 name[pos]   = '_';
 327                 name[++pos] = '2';
 328                 break;
 329
 330         case '[':
 331                 /* escape sequence for '[' is '_1' */
 332                 name[pos]   = '_';
 333                 name[++pos] = '3';
 334                 break;
 335
 336         default:
 337                 if (isalnum(c))
 338                         name[pos] = c;
 339                 else {
 340                         /* unicode character */
 341                         name[pos]   = '_';
 342                         name[++pos] = '0';
 343
 344                         for (i = 0; i < 4; ++i) {
 345                                 val = c & 0x0f;
 346                                 name[pos + 4 - i] = (val > 10) ? ('a' + val - 10) : ('0' + val);
 347                                 c >>= 4;
 348                         }
 349
 350                         pos += 4;
 351                 }
 352                 break;
 353         }
 354
 355         /* return the new buffer index */
 356
 357         return pos;
 358 }
 359
 360
 361 /* native_method_symbol ********************************************************
 362
 363    Generate a method-symbol string out of the class name and the
 364    method name.
 365
 366 *******************************************************************************/
 367
 368 static utf *native_method_symbol(utf *classname, utf *methodname)
 369 {
 370         char *name;
 371         s4    namelen;
 372         char *utf_ptr;
 373         char *utf_endptr;
 374         u2    c;
 375         u4    pos;
 376         s4    dumpsize;
 377         utf  *u;
 378
 379         /* mark memory */
 380
 381         dumpsize = dump_size();
 382
 383         /* Calculate length of native function name.  We multiply the
 384            class and method name length by 6 as this is the maxium
 385            escape-sequence that can be generated (unicode). */
 386
 387         namelen =
 388                 strlen("Java_") +
 389                 utf_get_number_of_u2s(classname) * 6 +
 390                 strlen("_") +
 391                 utf_get_number_of_u2s(methodname) * 6 +
 392                 strlen("0");
 393
 394         /* allocate memory */
 395
 396         name = DMNEW(char, namelen);
 397
 398         /* generate name of native functions */
 399
 400         strcpy(name, "Java_");
 401         pos = strlen("Java_");
 402
 403         utf_ptr    = classname->text;
 404         utf_endptr = UTF_END(classname);
 405
 406         for (; utf_ptr < utf_endptr; utf_ptr++, pos++) {
 407                 c   = *utf_ptr;
 408                 pos = native_insert_char(name, pos, c);
 409         }
 410
 411         /* seperator between class and method */
 412
 413         name[pos++] = '_';
 414
 415         utf_ptr    = methodname->text;
 416         utf_endptr = UTF_END(methodname);
 417
 418         for (; utf_ptr < utf_endptr; utf_ptr++, pos++) {
 419                 c   = *utf_ptr;
 420                 pos = native_insert_char(name, pos, c);
 421         }
 422
 423         /* close string */
 424
 425         name[pos] = '\0';
 426
 427         /* check for an buffer overflow */
 428
 429         assert(pos <= namelen);
 430
 431         /* make a utf-string */
 432
 433         u = utf_new_char(name);
 434
 435         /* release memory */
 436
 437         dump_release(dumpsize);
 438
 439         return u;
 440 }
 441
 442
 443 /* native_method_register ******************************************************
 444
 445    Register a native method in the native method table.
 446
 447 *******************************************************************************/
 448
 449 void native_method_register(utf *classname, JNINativeMethod *methods, s4 count)
 450 {
 451         native_methods_node_t *nmn;
 452         utf                   *name;
 453         utf                   *descriptor;
 454         s4                     i;
 455
 456         /* insert all methods passed */
 457
 458         for (i = 0; i < count; i++) {
 459                 if (opt_verbosejni) {
 460                         printf("[Registering JNI native method ");
 461                         utf_display_printable_ascii_classname(classname);
 462                         printf(".%s]\n", methods[i].name);
 463                 }
 464
 465                 /* generate the utf8 names */
 466
 467                 name       = utf_new_char(methods[i].name);
 468                 descriptor = utf_new_char(methods[i].signature);
 469
 470                 /* allocate a new tree node */
 471
 472                 nmn = NEW(native_methods_node_t);
 473
 474                 nmn->classname  = classname;
 475                 nmn->name       = name;
 476                 nmn->descriptor = descriptor;
 477                 nmn->function   = (functionptr) (ptrint) methods[i].fnPtr;
 478
 479                 /* insert the method into the tree */
 480
 481                 avl_insert(tree_native_methods, nmn);
 482         }
 483 }
 484
 485
 486 /* native_method_find **********************************************************
 487
 488    Find a native method in the native method table.
 489
 490 *******************************************************************************/
 491
 492 static functionptr native_method_find(methodinfo *m)
 493 {
 494         native_methods_node_t  tmpnmn;
 495         native_methods_node_t *nmn;
 496
 497         /* fill the temporary structure used for searching the tree */
 498
 499         tmpnmn.classname  = m->class->name;
 500         tmpnmn.name       = m->name;
 501         tmpnmn.descriptor = m->descriptor;
 502
 503         /* find the entry in the AVL-tree */
 504
 505         nmn = avl_find(tree_native_methods, &tmpnmn);
 506
 507         if (nmn == NULL)
 508                 return NULL;
 509
 510         return nmn->function;
 511 }
 512
 513
 514 /* native_library_open *********************************************************
 515
 516    Open a native library with the given utf8 name.
 517
 518 *******************************************************************************/
 519
 520 #if !defined(WITH_STATIC_CLASSPATH)
 521 lt_dlhandle native_library_open(utf *filename)
 522 {
 523         lt_dlhandle handle;
 524
 525         /* try to open the library */
 526
 527         handle = lt_dlopen(filename->text);
 528
 529         if (handle == NULL) {
 530                 if (opt_verbose) {
 531                         log_start();
 532                         log_print("native_library_load: lt_dlopen failed: ");
 533                         log_print(lt_dlerror());
 534                         log_finish();
 535                 }
 536
 537                 return NULL;
 538         }
 539
 540         return handle;
 541 }
 542 #endif
 543
 544
 545 /* native_library_add **********************************************************
 546
 547    Adds an entry to the native library hashtable.
 548
 549 *******************************************************************************/
 550
 551 #if !defined(WITH_STATIC_CLASSPATH)
 552 void native_library_add(utf *filename, java_objectheader *loader,
 553                                                 lt_dlhandle handle)
 554 {
 555         hashtable_library_loader_entry *le;
 556         hashtable_library_name_entry   *ne; /* library name                       */
 557         u4   key;                           /* hashkey                            */
 558         u4   slot;                          /* slot in hashtable                  */
 559
 560         LOCK_MONITOR_ENTER(hashtable_library->header);
 561
 562         /* normally addresses are aligned to 4, 8 or 16 bytes */
 563
 564         key  = ((u4) (ptrint) loader) >> 4;        /* align to 16-byte boundaries */
 565         slot = key & (hashtable_library->size - 1);
 566         le   = hashtable_library->ptr[slot];
 567
 568         /* search external hash chain for the entry */
 569
 570         while (le) {
 571                 if (le->loader == loader)
 572                         break;
 573
 574                 le = le->hashlink;                  /* next element in external chain */
 575         }
 576
 577         /* no loader found? create a new entry */
 578
 579         if (le == NULL) {
 580                 le = NEW(hashtable_library_loader_entry);
 581
 582                 le->loader   = loader;
 583                 le->namelink = NULL;
 584
 585                 /* insert entry into hashtable */
 586
 587                 le->hashlink =
 588                         (hashtable_library_loader_entry *) hashtable_library->ptr[slot];
 589                 hashtable_library->ptr[slot] = le;
 590
 591                 /* update number of hashtable-entries */
 592
 593                 hashtable_library->entries++;
 594         }
 595
 596
 597         /* search for library name */
 598
 599         ne = le->namelink;
 600
 601         while (ne) {
 602                 if (ne->name == filename) {
 603                         LOCK_MONITOR_EXIT(hashtable_library->header);
 604
 605                         return;
 606                 }
 607
 608                 ne = ne->hashlink;                  /* next element in external chain */
 609         }
 610
 611         /* not found? add the library name to the classloader */
 612
 613         ne = NEW(hashtable_library_name_entry);
 614
 615         ne->name   = filename;
 616         ne->handle = handle;
 617
 618         /* insert entry into external chain */
 619
 620         ne->hashlink = le->namelink;
 621         le->namelink = ne;
 622
 623         LOCK_MONITOR_EXIT(hashtable_library->header);
 624 }
 625 #endif /* !defined(WITH_STATIC_CLASSPATH) */
 626
 627
 628 /* native_library_find *********************************************************
 629
 630    Find an entry in the native library hashtable.
 631
 632 *******************************************************************************/
 633
 634 #if !defined(WITH_STATIC_CLASSPATH)
 635 hashtable_library_name_entry *native_library_find(utf *filename,
 636                                                                                                   java_objectheader *loader)
 637 {
 638         hashtable_library_loader_entry *le;
 639         hashtable_library_name_entry   *ne; /* library name                       */
 640         u4   key;                           /* hashkey                            */
 641         u4   slot;                          /* slot in hashtable                  */
 642
 643         /* normally addresses are aligned to 4, 8 or 16 bytes */
 644
 645         key  = ((u4) (ptrint) loader) >> 4;        /* align to 16-byte boundaries */
 646         slot = key & (hashtable_library->size - 1);
 647         le   = hashtable_library->ptr[slot];
 648
 649         /* search external hash chain for the entry */
 650
 651         while (le) {
 652                 if (le->loader == loader)
 653                         break;
 654
 655                 le = le->hashlink;                  /* next element in external chain */
 656         }
 657
 658         /* no loader found? return NULL */
 659
 660         if (le == NULL)
 661                 return NULL;
 662
 663         /* search for library name */
 664
 665         ne = le->namelink;
 666
 667         while (ne) {
 668                 if (ne->name == filename)
 669                         return ne;
 670
 671                 ne = ne->hashlink;                  /* next element in external chain */
 672         }
 673
 674         /* return entry, if no entry was found, ne is NULL */
 675
 676         return ne;
 677 }
 678 #endif /* !defined(WITH_STATIC_CLASSPATH) */
 679
 680
 681 /* native_findfunction *********************************************************
 682
 683    Looks up a method (must have the same class name, method name,
 684    descriptor and 'static'ness) and returns a function pointer to it.
 685    Returns: function pointer or NULL (if there is no such method)
 686
 687    Remark: For faster operation, the names/descriptors are converted
 688    from C strings to Unicode the first time this function is called.
 689
 690 *******************************************************************************/
 691
 692 #if defined(WITH_STATIC_CLASSPATH)
 693 functionptr native_findfunction(utf *cname, utf *mname, utf *desc,
 694                                                                 bool isstatic)
 695 {
 696         /* entry of table for fast string comparison */
 697         struct nativecompref *n;
 698         s4 i;
 699
 700         isstatic = isstatic ? true : false;
 701
 702         if (!nativecompdone) {
 703                 for (i = 0; i < NATIVETABLESIZE; i++) {
 704                         nativecomptable[i].classname  =
 705                                 utf_new_char(nativetable[i].classname);
 706
 707                         nativecomptable[i].methodname =
 708                                 utf_new_char(nativetable[i].methodname);
 709
 710                         nativecomptable[i].descriptor =
 711                                 utf_new_char(nativetable[i].descriptor);
 712
 713                         nativecomptable[i].isstatic   = nativetable[i].isstatic;
 714                         nativecomptable[i].func       = nativetable[i].func;
 715                 }
 716
 717                 nativecompdone = true;
 718         }
 719
 720         for (i = 0; i < NATIVETABLESIZE; i++) {
 721                 n = &(nativecomptable[i]);
 722
 723                 if (cname == n->classname && mname == n->methodname &&
 724                     desc == n->descriptor && isstatic == n->isstatic)
 725                         return n->func;
 726         }
 727
 728         /* no function was found, throw exception */
 729
 730         *exceptionptr =
 731                         new_exception_utfmessage(string_java_lang_UnsatisfiedLinkError,
 732                                                                          mname);
 733
 734         return NULL;
 735 }
 736 #endif /* defined(WITH_STATIC_CLASSPATH) */
 737
 738
 739 /* native_resolve_function *****************************************************
 740
 741    Resolves a native function, maybe from a dynamic library.
 742
 743 *******************************************************************************/
 744
 745 functionptr native_resolve_function(methodinfo *m)
 746 {
 747         utf                            *name;
 748         utf                            *newname;
 749         functionptr                     f;
 750         hashtable_library_loader_entry *le;
 751         hashtable_library_name_entry   *ne;
 752         u4                              key;    /* hashkey                        */
 753         u4                              slot;   /* slot in hashtable              */
 754
 755         /* verbose output */
 756
 757         if (opt_verbosejni) {
 758                 printf("[Dynamic-linking native method ");
 759                 utf_display_printable_ascii_classname(m->class->name);
 760                 printf(".");
 761                 utf_display_printable_ascii(m->name);
 762                 printf(" ... ");
 763         }
 764
 765         /* generate method symbol string */
 766
 767         name = native_method_symbol(m->class->name, m->name);
 768
 769         /* generate overloaded function (having the types in it's name)           */
 770
 771         newname = native_make_overloaded_function(name, m->descriptor);
 772
 773         /* check the library hash entries of the classloader of the
 774            methods's class  */
 775
 776         f = NULL;
 777
 778         /* normally addresses are aligned to 4, 8 or 16 bytes */
 779
 780         key  = ((u4) (ptrint) m->class->classloader) >> 4;    /* align to 16-byte */
 781         slot = key & (hashtable_library->size - 1);
 782         le   = hashtable_library->ptr[slot];
 783
 784         /* iterate through loaders in this hash slot */
 785
 786         while ((le != NULL) && (f == NULL)) {
 787                 /* iterate through names in this loader */
 788
 789                 ne = le->namelink;
 790
 791                 while ((ne != NULL) && (f == NULL)) {
 792                         f = (functionptr) (ptrint) lt_dlsym(ne->handle, name->text);
 793
 794                         if (f == NULL)
 795                                 f = (functionptr) (ptrint) lt_dlsym(ne->handle, newname->text);
 796
 797                         ne = ne->hashlink;
 798                 }
 799
 800                 le = le->hashlink;
 801         }
 802
 803         if (f != NULL)
 804                 if (opt_verbosejni)
 805                         printf("JNI ]\n");
 806
 807         /* If not found, try to find the native function symbol in the
 808            main program. */
 809
 810         if (f == NULL) {
 811                 f = native_method_find(m);
 812
 813                 if (f != NULL)
 814                         if (opt_verbosejni)
 815                                 printf("internal ]\n");
 816         }
 817
 818 #if defined(ENABLE_JVMTI)
 819         /* fire Native Method Bind event */
 820         if (jvmti) jvmti_NativeMethodBind(m, f, &f);
 821 #endif
 822
 823         /* no symbol found? throw exception */
 824
 825         if (f == NULL) {
 826                 if (opt_verbosejni)
 827                         printf("failed ]\n");
 828
 829                 exceptions_throw_unsatisfiedlinkerror(m->name);
 830         }
 831
 832         return f;
 833 }
 834 #endif /* !defined(WITH_STATIC_CLASSPATH) */
 835
 836
 837 /* native_new_and_init *********************************************************
 838
 839    Creates a new object on the heap and calls the initializer.
 840    Returns the object pointer or NULL if memory is exhausted.
 841
 842 *******************************************************************************/
 843
 844 java_objectheader *native_new_and_init(classinfo *c)
 845 {
 846         methodinfo *m;
 847         java_objectheader *o;
 848
 849         if (c == NULL)
 850                 vm_abort("native_new_and_init: c == NULL");
 851
 852         /* create object */
 853
 854         o = builtin_new(c);
 855
 856         if (o == NULL)
 857                 return NULL;
 858
 859         /* try to find the initializer */
 860
 861         m = class_findmethod(c, utf_init, utf_void__void);
 862
 863         /* ATTENTION: returning the object here is ok, since the class may
 864        not have an initializer */
 865
 866         if (m == NULL)
 867                 return o;
 868
 869         /* call initializer */
 870
 871         (void) vm_call_method(m, o);
 872
 873         return o;
 874 }
 875
 876
 877 java_objectheader *native_new_and_init_string(classinfo *c, java_objectheader *s)
 878 {
 879         methodinfo        *m;
 880         java_objectheader *o;
 881
 882         if (c == NULL)
 883                 vm_abort("native_new_and_init_string: c == NULL");
 884
 885         /* create object */
 886
 887         o = builtin_new(c);
 888
 889         if (o == NULL)
 890                 return NULL;
 891
 892         /* find initializer */
 893
 894         m = class_resolveclassmethod(c,
 895                                                                  utf_init,
 896                                                                  utf_java_lang_String__void,
 897                                                                  NULL,
 898                                                                  true);
 899
 900         /* initializer not found */
 901
 902         if (m == NULL)
 903                 return NULL;
 904
 905         /* call initializer */
 906
 907         (void) vm_call_method(m, o, s);
 908
 909         return o;
 910 }
 911
 912
 913 java_objectheader *native_new_and_init_throwable(classinfo *c, java_objectheader *t)
 914 {
 915         java_objectheader *o;
 916         methodinfo        *m;
 917
 918         if (c == NULL)
 919                 vm_abort("native_new_and_init_throwable: c == NULL");
 920
 921         /* create object */
 922
 923         o = builtin_new(c);
 924
 925         if (o == NULL)
 926                 return NULL;
 927
 928         /* find initializer */
 929
 930         m = class_findmethod(c, utf_init, utf_java_lang_Throwable__void);
 931
 932         /* initializer not found */
 933
 934         if (m == NULL)
 935                 return NULL;
 936
 937         /* call initializer */
 938
 939         (void) vm_call_method(m, o, t);
 940
 941         return o;
 942 }
 943
 944
 945 /*
 946  * These are local overrides for various environment variables in Emacs.
 947  * Please do not remove this and leave it at the end of the file, where
 948  * Emacs will automagically detect them.
 949  * ---------------------------------------------------------------------
 950  * Local variables:
 951  * mode: c
 952  * indent-tabs-mode: t
 953  * c-basic-offset: 4
 954  * tab-width: 4
 955  * End:
 956  */