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 8295 2007-08-11 17:57:24Z michi $
  26
  27 */
  28
  29
  30 #include "config.h"
  31
  32 #include <assert.h>
  33 #include <ctype.h>
  34
  35 #if defined(ENABLE_LTDL) && defined(HAVE_LTDL_H)
  36 # include <ltdl.h>
  37 #endif
  38
  39 #include <stdint.h>
  40
  41 #include "vm/types.h"
  42
  43 #include "mm/memory.h"
  44
  45 #include "native/jni.h"
  46 #include "native/native.h"
  47
  48 #include "native/vm/nativevm.h"
  49
  50 #include "threads/lock-common.h"
  51
  52 #include "toolbox/avl.h"
  53 #include "toolbox/hashtable.h"
  54 #include "toolbox/logging.h"
  55
  56 #include "vm/builtin.h"
  57 #include "vm/exceptions.h"
  58 #include "vm/global.h"
  59 #include "vm/stringlocal.h"
  60 #include "vm/vm.h"
  61
  62 #include "vm/jit/asmpart.h"
  63 #include "vm/jit/jit.h"
  64
  65 #include "vmcore/loader.h"
  66 #include "vmcore/options.h"
  67 #include "vm/resolve.h"
  68
  69 #if defined(ENABLE_JVMTI)
  70 #include "native/jvmti/cacaodbg.h"
  71 #endif
  72
  73
  74 /* include table of native functions ******************************************/
  75
  76 #if defined(WITH_STATIC_CLASSPATH)
  77 # include "native/nativetable.inc"
  78 #endif
  79
  80
  81 /* tables for methods *********************************************************/
  82
  83 #if defined(WITH_STATIC_CLASSPATH)
  84 #define NATIVETABLESIZE  (sizeof(nativetable)/sizeof(struct nativeref))
  85
  86 /* table for fast string comparison */
  87 static nativecompref nativecomptable[NATIVETABLESIZE];
  88
  89 /* string comparsion table initialized */
  90 static bool nativecompdone = false;
  91 #endif
  92
  93
  94 /* global variables ***********************************************************/
  95
  96 static avl_tree_t *tree_native_methods;
  97
  98 #if defined(ENABLE_LTDL)
  99 static hashtable *hashtable_library;
 100 #endif
 101
 102
 103 /* prototypes *****************************************************************/
 104
 105 static s4 native_tree_native_methods_comparator(const void *treenode, const void *node);
 106
 107
 108 /* native_init *****************************************************************
 109
 110    Initializes the native subsystem.
 111
 112 *******************************************************************************/
 113
 114 bool native_init(void)
 115 {
 116 #if defined(ENABLE_LTDL)
 117         /* initialize libltdl */
 118
 119         if (lt_dlinit())
 120                 vm_abort("native_init: lt_dlinit failed: %s\n", lt_dlerror());
 121
 122         /* initialize library hashtable, 10 entries should be enough */
 123
 124         hashtable_library = NEW(hashtable);
 125
 126         hashtable_create(hashtable_library, 10);
 127 #endif
 128
 129         /* initialize the native methods table */
 130
 131         tree_native_methods = avl_create(&native_tree_native_methods_comparator);
 132
 133         /* everything's ok */
 134
 135         return true;
 136 }
 137
 138
 139 /* native_tree_native_methods_comparator ***************************************
 140
 141    Comparison function for AVL tree of native methods.
 142
 143    IN:
 144        treenode....node in the tree
 145            node........node to compare with tree-node
 146
 147    RETURN VALUE:
 148        -1, 0, +1
 149
 150 *******************************************************************************/
 151
 152 static s4 native_tree_native_methods_comparator(const void *treenode, const void *node)
 153 {
 154         const native_methods_node_t *treenmn;
 155         const native_methods_node_t *nmn;
 156
 157         treenmn = treenode;
 158         nmn     = node;
 159
 160         /* these are for walking the tree */
 161
 162         if (treenmn->classname < nmn->classname)
 163                 return -1;
 164         else if (treenmn->classname > nmn->classname)
 165                 return 1;
 166
 167         if (treenmn->name < nmn->name)
 168                 return -1;
 169         else if (treenmn->name > nmn->name)
 170                 return 1;
 171
 172         if (treenmn->descriptor < nmn->descriptor)
 173                 return -1;
 174         else if (treenmn->descriptor > nmn->descriptor)
 175                 return 1;
 176
 177         /* all pointers are equal, we have found the entry */
 178
 179         return 0;
 180 }
 181
 182
 183 /* native_make_overloaded_function *********************************************
 184
 185    XXX
 186
 187 *******************************************************************************/
 188
 189 #if !defined(WITH_STATIC_CLASSPATH)
 190 static utf *native_make_overloaded_function(utf *name, utf *descriptor)
 191 {
 192         char *newname;
 193         s4    namelen;
 194         char *utf_ptr;
 195         u2    c;
 196         s4    i;
 197         s4    dumpsize;
 198         utf  *u;
 199
 200         /* mark memory */
 201
 202         dumpsize = dump_size();
 203
 204         utf_ptr = descriptor->text;
 205         namelen = strlen(name->text) + strlen("__") + strlen("0");
 206
 207         /* calculate additional length */
 208
 209         while ((c = utf_nextu2(&utf_ptr)) != ')') {
 210                 switch (c) {
 211                 case 'Z':
 212                 case 'B':
 213                 case 'C':
 214                 case 'S':
 215                 case 'I':
 216                 case 'J':
 217                 case 'F':
 218                 case 'D':
 219                         namelen++;
 220                         break;
 221                 case '[':
 222                         namelen += 2;
 223                         break;
 224                 case 'L':
 225                         namelen++;
 226                         while (utf_nextu2(&utf_ptr) != ';')
 227                                 namelen++;
 228                         namelen += 2;
 229                         break;
 230                 case '(':
 231                         break;
 232                 default:
 233                         assert(0);
 234                 }
 235         }
 236
 237         /* reallocate memory */
 238
 239         i = strlen(name->text);
 240
 241         newname = DMNEW(char, namelen);
 242         MCOPY(newname, name->text, char, i);
 243
 244         utf_ptr = descriptor->text;
 245
 246         newname[i++] = '_';
 247         newname[i++] = '_';
 248
 249         while ((c = utf_nextu2(&utf_ptr)) != ')') {
 250                 switch (c) {
 251                 case 'Z':
 252                 case 'B':
 253                 case 'C':
 254                 case 'S':
 255                 case 'J':
 256                 case 'I':
 257                 case 'F':
 258                 case 'D':
 259                         newname[i++] = c;
 260                         break;
 261                 case '[':
 262                         newname[i++] = '_';
 263                         newname[i++] = '3';
 264                         break;
 265                 case 'L':
 266                         newname[i++] = 'L';
 267                         while ((c = utf_nextu2(&utf_ptr)) != ';')
 268                                 if (((c >= 'a') && (c <= 'z')) ||
 269                                         ((c >= 'A') && (c <= 'Z')) ||
 270                                         ((c >= '0') && (c <= '9')))
 271                                         newname[i++] = c;
 272                                 else
 273                                         newname[i++] = '_';
 274                         newname[i++] = '_';
 275                         newname[i++] = '2';
 276                         break;
 277                 case '(':
 278                         break;
 279                 default:
 280                         assert(0);
 281                 }
 282         }
 283
 284         /* close string */
 285
 286         newname[i] = '\0';
 287
 288         /* make a utf-string */
 289
 290         u = utf_new_char(newname);
 291
 292         /* release memory */
 293
 294         dump_release(dumpsize);
 295
 296         return u;
 297 }
 298
 299
 300 /* native_insert_char **********************************************************
 301
 302    Inserts the passed UTF character into the native method name.  If
 303    necessary it is escaped properly.
 304
 305 *******************************************************************************/
 306
 307 static s4 native_insert_char(char *name, u4 pos, u2 c)
 308 {
 309         s4 val;
 310         s4 i;
 311
 312         switch (c) {
 313         case '/':
 314         case '.':
 315                 /* replace '/' or '.' with '_' */
 316                 name[pos] = '_';
 317                 break;
 318
 319         case '_':
 320                 /* escape sequence for '_' is '_1' */
 321                 name[pos]   = '_';
 322                 name[++pos] = '1';
 323                 break;
 324
 325         case ';':
 326                 /* escape sequence for ';' is '_2' */
 327                 name[pos]   = '_';
 328                 name[++pos] = '2';
 329                 break;
 330
 331         case '[':
 332                 /* escape sequence for '[' is '_1' */
 333                 name[pos]   = '_';
 334                 name[++pos] = '3';
 335                 break;
 336
 337         default:
 338                 if (isalnum(c))
 339                         name[pos] = c;
 340                 else {
 341                         /* unicode character */
 342                         name[pos]   = '_';
 343                         name[++pos] = '0';
 344
 345                         for (i = 0; i < 4; ++i) {
 346                                 val = c & 0x0f;
 347                                 name[pos + 4 - i] = (val > 10) ? ('a' + val - 10) : ('0' + val);
 348                                 c >>= 4;
 349                         }
 350
 351                         pos += 4;
 352                 }
 353                 break;
 354         }
 355
 356         /* return the new buffer index */
 357
 358         return pos;
 359 }
 360
 361
 362 /* native_method_symbol ********************************************************
 363
 364    Generate a method-symbol string out of the class name and the
 365    method name.
 366
 367 *******************************************************************************/
 368
 369 static utf *native_method_symbol(utf *classname, utf *methodname)
 370 {
 371         char *name;
 372         s4    namelen;
 373         char *utf_ptr;
 374         char *utf_endptr;
 375         u2    c;
 376         u4    pos;
 377         s4    dumpsize;
 378         utf  *u;
 379
 380         /* mark memory */
 381
 382         dumpsize = dump_size();
 383
 384         /* Calculate length of native function name.  We multiply the
 385            class and method name length by 6 as this is the maxium
 386            escape-sequence that can be generated (unicode). */
 387
 388         namelen =
 389                 strlen("Java_") +
 390                 utf_get_number_of_u2s(classname) * 6 +
 391                 strlen("_") +
 392                 utf_get_number_of_u2s(methodname) * 6 +
 393                 strlen("0");
 394
 395         /* allocate memory */
 396
 397         name = DMNEW(char, namelen);
 398
 399         /* generate name of native functions */
 400
 401         strcpy(name, "Java_");
 402         pos = strlen("Java_");
 403
 404         utf_ptr    = classname->text;
 405         utf_endptr = UTF_END(classname);
 406
 407         for (; utf_ptr < utf_endptr; utf_ptr++, pos++) {
 408                 c   = *utf_ptr;
 409                 pos = native_insert_char(name, pos, c);
 410         }
 411
 412         /* seperator between class and method */
 413
 414         name[pos++] = '_';
 415
 416         utf_ptr    = methodname->text;
 417         utf_endptr = UTF_END(methodname);
 418
 419         for (; utf_ptr < utf_endptr; utf_ptr++, pos++) {
 420                 c   = *utf_ptr;
 421                 pos = native_insert_char(name, pos, c);
 422         }
 423
 424         /* close string */
 425
 426         name[pos] = '\0';
 427
 428         /* check for an buffer overflow */
 429
 430         assert(pos <= namelen);
 431
 432         /* make a utf-string */
 433
 434         u = utf_new_char(name);
 435
 436         /* release memory */
 437
 438         dump_release(dumpsize);
 439
 440         return u;
 441 }
 442
 443
 444 /* native_method_register ******************************************************
 445
 446    Register a native method in the native method table.
 447
 448 *******************************************************************************/
 449
 450 void native_method_register(utf *classname, const JNINativeMethod *methods,
 451                                                         int32_t count)
 452 {
 453         native_methods_node_t *nmn;
 454         utf                   *name;
 455         utf                   *descriptor;
 456         int32_t                i;
 457
 458         /* insert all methods passed */
 459
 460         for (i = 0; i < count; i++) {
 461                 if (opt_verbosejni) {
 462                         printf("[Registering JNI native method ");
 463                         utf_display_printable_ascii_classname(classname);
 464                         printf(".%s]\n", methods[i].name);
 465                 }
 466
 467                 /* generate the utf8 names */
 468
 469                 name       = utf_new_char(methods[i].name);
 470                 descriptor = utf_new_char(methods[i].signature);
 471
 472                 /* allocate a new tree node */
 473
 474                 nmn = NEW(native_methods_node_t);
 475
 476                 nmn->classname  = classname;
 477                 nmn->name       = name;
 478                 nmn->descriptor = descriptor;
 479                 nmn->function   = (functionptr) (ptrint) methods[i].fnPtr;
 480
 481                 /* insert the method into the tree */
 482
 483                 avl_insert(tree_native_methods, nmn);
 484         }
 485 }
 486
 487
 488 /* native_method_find **********************************************************
 489
 490    Find a native method in the native method table.
 491
 492 *******************************************************************************/
 493
 494 static functionptr native_method_find(methodinfo *m)
 495 {
 496         native_methods_node_t  tmpnmn;
 497         native_methods_node_t *nmn;
 498
 499         /* fill the temporary structure used for searching the tree */
 500
 501         tmpnmn.classname  = m->class->name;
 502         tmpnmn.name       = m->name;
 503         tmpnmn.descriptor = m->descriptor;
 504
 505         /* find the entry in the AVL-tree */
 506
 507         nmn = avl_find(tree_native_methods, &tmpnmn);
 508
 509         if (nmn == NULL)
 510                 return NULL;
 511
 512         return nmn->function;
 513 }
 514
 515
 516 /* native_library_open *********************************************************
 517
 518    Open a native library with the given utf8 name.
 519
 520 *******************************************************************************/
 521
 522 #if defined(ENABLE_LTDL)
 523 lt_dlhandle native_library_open(utf *filename)
 524 {
 525         lt_dlhandle handle;
 526
 527         if (opt_verbosejni) {
 528                 printf("[Loading native library ");
 529                 utf_display_printable_ascii(filename);
 530                 printf(" ... ");
 531         }
 532
 533         /* try to open the library */
 534
 535         handle = lt_dlopen(filename->text);
 536
 537         if (handle == NULL) {
 538                 if (opt_verbose) {
 539                         log_start();
 540                         log_print("native_library_load: lt_dlopen failed: ");
 541                         log_print(lt_dlerror());
 542                         log_finish();
 543                 }
 544
 545                 return NULL;
 546         }
 547
 548         return handle;
 549 }
 550 #endif
 551
 552
 553 /* native_library_add **********************************************************
 554
 555    Adds an entry to the native library hashtable.
 556
 557 *******************************************************************************/
 558
 559 #if defined(ENABLE_LTDL)
 560 void native_library_add(utf *filename, classloader *loader, lt_dlhandle handle)
 561 {
 562         hashtable_library_loader_entry *le;
 563         hashtable_library_name_entry   *ne; /* library name                       */
 564         u4   key;                           /* hashkey                            */
 565         u4   slot;                          /* slot in hashtable                  */
 566
 567         LOCK_MONITOR_ENTER(hashtable_library->header);
 568
 569         /* normally addresses are aligned to 4, 8 or 16 bytes */
 570
 571         key  = ((u4) (ptrint) loader) >> 4;        /* align to 16-byte boundaries */
 572         slot = key & (hashtable_library->size - 1);
 573         le   = hashtable_library->ptr[slot];
 574
 575         /* search external hash chain for the entry */
 576
 577         while (le) {
 578                 if (le->loader == loader)
 579                         break;
 580
 581                 le = le->hashlink;                  /* next element in external chain */
 582         }
 583
 584         /* no loader found? create a new entry */
 585
 586         if (le == NULL) {
 587                 le = NEW(hashtable_library_loader_entry);
 588
 589                 le->loader   = loader;
 590                 le->namelink = NULL;
 591
 592                 /* insert entry into hashtable */
 593
 594                 le->hashlink =
 595                         (hashtable_library_loader_entry *) hashtable_library->ptr[slot];
 596                 hashtable_library->ptr[slot] = le;
 597
 598                 /* update number of hashtable-entries */
 599
 600                 hashtable_library->entries++;
 601         }
 602
 603
 604         /* search for library name */
 605
 606         ne = le->namelink;
 607
 608         while (ne) {
 609                 if (ne->name == filename) {
 610                         LOCK_MONITOR_EXIT(hashtable_library->header);
 611
 612                         return;
 613                 }
 614
 615                 ne = ne->hashlink;                  /* next element in external chain */
 616         }
 617
 618         /* not found? add the library name to the classloader */
 619
 620         ne = NEW(hashtable_library_name_entry);
 621
 622         ne->name   = filename;
 623         ne->handle = handle;
 624
 625         /* insert entry into external chain */
 626
 627         ne->hashlink = le->namelink;
 628         le->namelink = ne;
 629
 630         LOCK_MONITOR_EXIT(hashtable_library->header);
 631 }
 632 #endif
 633
 634
 635 /* native_library_find *********************************************************
 636
 637    Find an entry in the native library hashtable.
 638
 639 *******************************************************************************/
 640
 641 #if defined(ENABLE_LTDL)
 642 hashtable_library_name_entry *native_library_find(utf *filename,
 643                                                                                                   classloader *loader)
 644 {
 645         hashtable_library_loader_entry *le;
 646         hashtable_library_name_entry   *ne; /* library name                       */
 647         u4   key;                           /* hashkey                            */
 648         u4   slot;                          /* slot in hashtable                  */
 649
 650         /* normally addresses are aligned to 4, 8 or 16 bytes */
 651
 652         key  = ((u4) (ptrint) loader) >> 4;        /* align to 16-byte boundaries */
 653         slot = key & (hashtable_library->size - 1);
 654         le   = hashtable_library->ptr[slot];
 655
 656         /* search external hash chain for the entry */
 657
 658         while (le) {
 659                 if (le->loader == loader)
 660                         break;
 661
 662                 le = le->hashlink;                  /* next element in external chain */
 663         }
 664
 665         /* no loader found? return NULL */
 666
 667         if (le == NULL)
 668                 return NULL;
 669
 670         /* search for library name */
 671
 672         ne = le->namelink;
 673
 674         while (ne) {
 675                 if (ne->name == filename)
 676                         return ne;
 677
 678                 ne = ne->hashlink;                  /* next element in external chain */
 679         }
 680
 681         /* return entry, if no entry was found, ne is NULL */
 682
 683         return ne;
 684 }
 685 #endif /* !defined(WITH_STATIC_CLASSPATH) */
 686
 687
 688 /* native_findfunction *********************************************************
 689
 690    Looks up a method (must have the same class name, method name,
 691    descriptor and 'static'ness) and returns a function pointer to it.
 692    Returns: function pointer or NULL (if there is no such method)
 693
 694    Remark: For faster operation, the names/descriptors are converted
 695    from C strings to Unicode the first time this function is called.
 696
 697 *******************************************************************************/
 698
 699 #if defined(WITH_STATIC_CLASSPATH)
 700 functionptr native_findfunction(utf *cname, utf *mname, utf *desc,
 701                                                                 bool isstatic)
 702 {
 703         /* entry of table for fast string comparison */
 704         struct nativecompref *n;
 705         s4 i;
 706
 707         isstatic = isstatic ? true : false;
 708
 709         if (!nativecompdone) {
 710                 for (i = 0; i < NATIVETABLESIZE; i++) {
 711                         nativecomptable[i].classname  =
 712                                 utf_new_char(nativetable[i].classname);
 713
 714                         nativecomptable[i].methodname =
 715                                 utf_new_char(nativetable[i].methodname);
 716
 717                         nativecomptable[i].descriptor =
 718                                 utf_new_char(nativetable[i].descriptor);
 719
 720                         nativecomptable[i].isstatic   = nativetable[i].isstatic;
 721                         nativecomptable[i].func       = nativetable[i].func;
 722                 }
 723
 724                 nativecompdone = true;
 725         }
 726
 727         for (i = 0; i < NATIVETABLESIZE; i++) {
 728                 n = &(nativecomptable[i]);
 729
 730                 if (cname == n->classname && mname == n->methodname &&
 731                     desc == n->descriptor && isstatic == n->isstatic)
 732                         return n->func;
 733         }
 734
 735         /* no function was found, throw exception */
 736
 737         exceptions_throw_unsatisfiedlinkerror(mname);
 738
 739         return NULL;
 740 }
 741 #endif /* defined(WITH_STATIC_CLASSPATH) */
 742
 743
 744 /* native_resolve_function *****************************************************
 745
 746    Resolves a native function, maybe from a dynamic library.
 747
 748 *******************************************************************************/
 749
 750 functionptr native_resolve_function(methodinfo *m)
 751 {
 752         classloader                    *cl;
 753         utf                            *name;
 754         utf                            *newname;
 755         functionptr                     f;
 756 #if defined(ENABLE_LTDL)
 757         hashtable_library_loader_entry *le;
 758         hashtable_library_name_entry   *ne;
 759         u4                              key;    /* hashkey                        */
 760         u4                              slot;   /* slot in hashtable              */
 761 #endif
 762 #if defined(WITH_CLASSPATH_SUN)
 763         methodinfo                     *method_findNative;
 764         java_handle_t                  *s;
 765 #endif
 766
 767         cl = m->class->classloader;
 768
 769         /* verbose output */
 770
 771         if (opt_verbosejni) {
 772                 printf("[Dynamic-linking native method ");
 773                 utf_display_printable_ascii_classname(m->class->name);
 774                 printf(".");
 775                 utf_display_printable_ascii(m->name);
 776                 printf(" ... ");
 777         }
 778
 779         /* generate method symbol string */
 780
 781         name = native_method_symbol(m->class->name, m->name);
 782
 783         /* generate overloaded function (having the types in it's name)           */
 784
 785         newname = native_make_overloaded_function(name, m->descriptor);
 786
 787         /* check the library hash entries of the classloader of the
 788            methods's class  */
 789
 790         f = NULL;
 791
 792 #if defined(ENABLE_LTDL)
 793         /* normally addresses are aligned to 4, 8 or 16 bytes */
 794
 795         key  = ((u4) (ptrint) cl) >> 4;                       /* align to 16-byte */
 796         slot = key & (hashtable_library->size - 1);
 797         le   = hashtable_library->ptr[slot];
 798
 799         /* iterate through loaders in this hash slot */
 800
 801         while ((le != NULL) && (f == NULL)) {
 802                 /* iterate through names in this loader */
 803
 804                 ne = le->namelink;
 805
 806                 while ((ne != NULL) && (f == NULL)) {
 807                         f = (functionptr) (ptrint) lt_dlsym(ne->handle, name->text);
 808
 809                         if (f == NULL)
 810                                 f = (functionptr) (ptrint) lt_dlsym(ne->handle, newname->text);
 811
 812                         ne = ne->hashlink;
 813                 }
 814
 815                 le = le->hashlink;
 816         }
 817
 818 # if defined(WITH_CLASSPATH_SUN)
 819         if (f == NULL) {
 820                 /* We can resolve the function directly from
 821                    java.lang.ClassLoader as it's a static function. */
 822                 /* XXX should be done in native_init */
 823
 824                 method_findNative =
 825                         class_resolveclassmethod(class_java_lang_ClassLoader,
 826                                                                          utf_findNative,
 827                                                                          utf_java_lang_ClassLoader_java_lang_String__J,
 828                                                                          class_java_lang_ClassLoader,
 829                                                                          true);
 830
 831                 if (method_findNative == NULL)
 832                         return NULL;
 833
 834                 /* try the normal name */
 835
 836                 s = javastring_new(name);
 837
 838                 f = (functionptr) (intptr_t) vm_call_method_long(method_findNative,
 839                                                                                                                  NULL, cl, s);
 840
 841                 /* if not found, try the mangled name */
 842
 843                 if (f == NULL) {
 844                         s = javastring_new(newname);
 845
 846                         f = (functionptr) (intptr_t) vm_call_method_long(method_findNative,
 847                                                                                                                          NULL, cl, s);
 848                 }
 849         }
 850 # endif
 851
 852         if (f != NULL)
 853                 if (opt_verbosejni)
 854                         printf("JNI ]\n");
 855 #endif
 856
 857         /* If not found, try to find the native function symbol in the
 858            main program. */
 859
 860         if (f == NULL) {
 861                 f = native_method_find(m);
 862
 863                 if (f != NULL)
 864                         if (opt_verbosejni)
 865                                 printf("internal ]\n");
 866         }
 867
 868 #if defined(ENABLE_JVMTI)
 869         /* fire Native Method Bind event */
 870         if (jvmti) jvmti_NativeMethodBind(m, f, &f);
 871 #endif
 872
 873         /* no symbol found? throw exception */
 874
 875         if (f == NULL) {
 876                 if (opt_verbosejni)
 877                         printf("failed ]\n");
 878
 879                 exceptions_throw_unsatisfiedlinkerror(m->name);
 880         }
 881
 882         return f;
 883 }
 884 #endif /* !defined(WITH_STATIC_CLASSPATH) */
 885
 886
 887 /* native_new_and_init *********************************************************
 888
 889    Creates a new object on the heap and calls the initializer.
 890    Returns the object pointer or NULL if memory is exhausted.
 891
 892 *******************************************************************************/
 893
 894 java_handle_t *native_new_and_init(classinfo *c)
 895 {
 896         methodinfo    *m;
 897         java_handle_t *o;
 898
 899         if (c == NULL)
 900                 vm_abort("native_new_and_init: c == NULL");
 901
 902         /* create object */
 903
 904         o = builtin_new(c);
 905
 906         if (o == NULL)
 907                 return NULL;
 908
 909         /* try to find the initializer */
 910
 911         m = class_findmethod(c, utf_init, utf_void__void);
 912
 913         /* ATTENTION: returning the object here is ok, since the class may
 914        not have an initializer */
 915
 916         if (m == NULL)
 917                 return o;
 918
 919         /* call initializer */
 920
 921         (void) vm_call_method(m, o);
 922
 923         return o;
 924 }
 925
 926
 927 java_handle_t *native_new_and_init_string(classinfo *c, java_handle_t *s)
 928 {
 929         methodinfo    *m;
 930         java_handle_t *o;
 931
 932         if (c == NULL)
 933                 vm_abort("native_new_and_init_string: c == NULL");
 934
 935         /* create object */
 936
 937         o = builtin_new(c);
 938
 939         if (o == NULL)
 940                 return NULL;
 941
 942         /* find initializer */
 943
 944         m = class_findmethod(c, utf_init, utf_java_lang_String__void);
 945
 946         /* initializer not found */
 947
 948         if (m == NULL)
 949                 return NULL;
 950
 951         /* call initializer */
 952
 953         (void) vm_call_method(m, o, s);
 954
 955         return o;
 956 }
 957
 958
 959 /*
 960  * These are local overrides for various environment variables in Emacs.
 961  * Please do not remove this and leave it at the end of the file, where
 962  * Emacs will automagically detect them.
 963  * ---------------------------------------------------------------------
 964  * Local variables:
 965  * mode: c
 966  * indent-tabs-mode: t
 967  * c-basic-offset: 4
 968  * tab-width: 4
 969  * End:
 970  */