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 8299 2007-08-13 08:41:18Z 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_classloader_entry    *cle;
 563         hashtable_library_loader_entry *le;
 564         hashtable_library_name_entry   *ne; /* library name                       */
 565         u4   key;                           /* hashkey                            */
 566         u4   slot;                          /* slot in hashtable                  */
 567
 568         LOCK_MONITOR_ENTER(hashtable_library->header);
 569
 570         /* insert loader into the classloader hashtable */
 571
 572         cle = loader_hashtable_classloader_add(loader);
 573
 574         /* normally addresses are aligned to 4, 8 or 16 bytes */
 575
 576         key  = ((u4) (ptrint) cle) >> 4;        /* align to 16-byte boundaries    */
 577         slot = key & (hashtable_library->size - 1);
 578         le   = hashtable_library->ptr[slot];
 579
 580         /* search external hash chain for the entry */
 581
 582         while (le) {
 583                 if (le->cle == cle)
 584                         break;
 585
 586                 le = le->hashlink;                  /* next element in external chain */
 587         }
 588
 589         /* no loader found? create a new entry */
 590
 591         if (le == NULL) {
 592                 le = NEW(hashtable_library_loader_entry);
 593
 594                 le->cle   = cle;
 595                 le->namelink = NULL;
 596
 597                 /* insert entry into hashtable */
 598
 599                 le->hashlink =
 600                         (hashtable_library_loader_entry *) hashtable_library->ptr[slot];
 601                 hashtable_library->ptr[slot] = le;
 602
 603                 /* update number of hashtable-entries */
 604
 605                 hashtable_library->entries++;
 606         }
 607
 608
 609         /* search for library name */
 610
 611         ne = le->namelink;
 612
 613         while (ne) {
 614                 if (ne->name == filename) {
 615                         LOCK_MONITOR_EXIT(hashtable_library->header);
 616
 617                         return;
 618                 }
 619
 620                 ne = ne->hashlink;                  /* next element in external chain */
 621         }
 622
 623         /* not found? add the library name to the classloader */
 624
 625         ne = NEW(hashtable_library_name_entry);
 626
 627         ne->name   = filename;
 628         ne->handle = handle;
 629
 630         /* insert entry into external chain */
 631
 632         ne->hashlink = le->namelink;
 633         le->namelink = ne;
 634
 635         LOCK_MONITOR_EXIT(hashtable_library->header);
 636 }
 637 #endif
 638
 639
 640 /* native_library_find *********************************************************
 641
 642    Find an entry in the native library hashtable.
 643
 644 *******************************************************************************/
 645
 646 #if defined(ENABLE_LTDL)
 647 hashtable_library_name_entry *native_library_find(utf *filename,
 648                                                                                                   classloader *loader)
 649 {
 650         hashtable_classloader_entry    *cle;
 651         hashtable_library_loader_entry *le;
 652         hashtable_library_name_entry   *ne; /* library name                       */
 653         u4   key;                           /* hashkey                            */
 654         u4   slot;                          /* slot in hashtable                  */
 655
 656         /* search loader in the classloader hashtable */
 657
 658         cle = loader_hashtable_classloader_find(loader);
 659
 660         if (!cle)
 661                 return NULL;
 662
 663         /* normally addresses are aligned to 4, 8 or 16 bytes */
 664
 665         key  = ((u4) (ptrint) cle) >> 4;        /* align to 16-byte boundaries    */
 666         slot = key & (hashtable_library->size - 1);
 667         le   = hashtable_library->ptr[slot];
 668
 669         /* search external hash chain for the entry */
 670
 671         while (le) {
 672                 if (le->cle == cle)
 673                         break;
 674
 675                 le = le->hashlink;                  /* next element in external chain */
 676         }
 677
 678         /* no loader found? return NULL */
 679
 680         if (le == NULL)
 681                 return NULL;
 682
 683         /* search for library name */
 684
 685         ne = le->namelink;
 686
 687         while (ne) {
 688                 if (ne->name == filename)
 689                         return ne;
 690
 691                 ne = ne->hashlink;                  /* next element in external chain */
 692         }
 693
 694         /* return entry, if no entry was found, ne is NULL */
 695
 696         return ne;
 697 }
 698 #endif /* !defined(WITH_STATIC_CLASSPATH) */
 699
 700
 701 /* native_findfunction *********************************************************
 702
 703    Looks up a method (must have the same class name, method name,
 704    descriptor and 'static'ness) and returns a function pointer to it.
 705    Returns: function pointer or NULL (if there is no such method)
 706
 707    Remark: For faster operation, the names/descriptors are converted
 708    from C strings to Unicode the first time this function is called.
 709
 710 *******************************************************************************/
 711
 712 #if defined(WITH_STATIC_CLASSPATH)
 713 functionptr native_findfunction(utf *cname, utf *mname, utf *desc,
 714                                                                 bool isstatic)
 715 {
 716         /* entry of table for fast string comparison */
 717         struct nativecompref *n;
 718         s4 i;
 719
 720         isstatic = isstatic ? true : false;
 721
 722         if (!nativecompdone) {
 723                 for (i = 0; i < NATIVETABLESIZE; i++) {
 724                         nativecomptable[i].classname  =
 725                                 utf_new_char(nativetable[i].classname);
 726
 727                         nativecomptable[i].methodname =
 728                                 utf_new_char(nativetable[i].methodname);
 729
 730                         nativecomptable[i].descriptor =
 731                                 utf_new_char(nativetable[i].descriptor);
 732
 733                         nativecomptable[i].isstatic   = nativetable[i].isstatic;
 734                         nativecomptable[i].func       = nativetable[i].func;
 735                 }
 736
 737                 nativecompdone = true;
 738         }
 739
 740         for (i = 0; i < NATIVETABLESIZE; i++) {
 741                 n = &(nativecomptable[i]);
 742
 743                 if (cname == n->classname && mname == n->methodname &&
 744                     desc == n->descriptor && isstatic == n->isstatic)
 745                         return n->func;
 746         }
 747
 748         /* no function was found, throw exception */
 749
 750         exceptions_throw_unsatisfiedlinkerror(mname);
 751
 752         return NULL;
 753 }
 754 #endif /* defined(WITH_STATIC_CLASSPATH) */
 755
 756
 757 /* native_resolve_function *****************************************************
 758
 759    Resolves a native function, maybe from a dynamic library.
 760
 761 *******************************************************************************/
 762
 763 functionptr native_resolve_function(methodinfo *m)
 764 {
 765         classloader                    *cl;
 766         utf                            *name;
 767         utf                            *newname;
 768         functionptr                     f;
 769 #if defined(ENABLE_LTDL)
 770         hashtable_library_loader_entry *le;
 771         hashtable_library_name_entry   *ne;
 772         u4                              key;    /* hashkey                        */
 773         u4                              slot;   /* slot in hashtable              */
 774 #endif
 775 #if defined(WITH_CLASSPATH_SUN)
 776         methodinfo                     *method_findNative;
 777         java_handle_t                  *s;
 778 #endif
 779
 780         cl = m->class->classloader;
 781
 782         /* verbose output */
 783
 784         if (opt_verbosejni) {
 785                 printf("[Dynamic-linking native method ");
 786                 utf_display_printable_ascii_classname(m->class->name);
 787                 printf(".");
 788                 utf_display_printable_ascii(m->name);
 789                 printf(" ... ");
 790         }
 791
 792         /* generate method symbol string */
 793
 794         name = native_method_symbol(m->class->name, m->name);
 795
 796         /* generate overloaded function (having the types in it's name)           */
 797
 798         newname = native_make_overloaded_function(name, m->descriptor);
 799
 800         /* check the library hash entries of the classloader of the
 801            methods's class  */
 802
 803         f = NULL;
 804
 805 #if defined(ENABLE_LTDL)
 806         /* normally addresses are aligned to 4, 8 or 16 bytes */
 807
 808         key  = ((u4) (ptrint) cl) >> 4;                       /* align to 16-byte */
 809         slot = key & (hashtable_library->size - 1);
 810         le   = hashtable_library->ptr[slot];
 811
 812         /* iterate through loaders in this hash slot */
 813
 814         while ((le != NULL) && (f == NULL)) {
 815                 /* iterate through names in this loader */
 816
 817                 ne = le->namelink;
 818
 819                 while ((ne != NULL) && (f == NULL)) {
 820                         f = (functionptr) (ptrint) lt_dlsym(ne->handle, name->text);
 821
 822                         if (f == NULL)
 823                                 f = (functionptr) (ptrint) lt_dlsym(ne->handle, newname->text);
 824
 825                         ne = ne->hashlink;
 826                 }
 827
 828                 le = le->hashlink;
 829         }
 830
 831 # if defined(WITH_CLASSPATH_SUN)
 832         if (f == NULL) {
 833                 /* We can resolve the function directly from
 834                    java.lang.ClassLoader as it's a static function. */
 835                 /* XXX should be done in native_init */
 836
 837                 method_findNative =
 838                         class_resolveclassmethod(class_java_lang_ClassLoader,
 839                                                                          utf_findNative,
 840                                                                          utf_java_lang_ClassLoader_java_lang_String__J,
 841                                                                          class_java_lang_ClassLoader,
 842                                                                          true);
 843
 844                 if (method_findNative == NULL)
 845                         return NULL;
 846
 847                 /* try the normal name */
 848
 849                 s = javastring_new(name);
 850
 851                 f = (functionptr) (intptr_t) vm_call_method_long(method_findNative,
 852                                                                                                                  NULL, cl, s);
 853
 854                 /* if not found, try the mangled name */
 855
 856                 if (f == NULL) {
 857                         s = javastring_new(newname);
 858
 859                         f = (functionptr) (intptr_t) vm_call_method_long(method_findNative,
 860                                                                                                                          NULL, cl, s);
 861                 }
 862         }
 863 # endif
 864
 865         if (f != NULL)
 866                 if (opt_verbosejni)
 867                         printf("JNI ]\n");
 868 #endif
 869
 870         /* If not found, try to find the native function symbol in the
 871            main program. */
 872
 873         if (f == NULL) {
 874                 f = native_method_find(m);
 875
 876                 if (f != NULL)
 877                         if (opt_verbosejni)
 878                                 printf("internal ]\n");
 879         }
 880
 881 #if defined(ENABLE_JVMTI)
 882         /* fire Native Method Bind event */
 883         if (jvmti) jvmti_NativeMethodBind(m, f, &f);
 884 #endif
 885
 886         /* no symbol found? throw exception */
 887
 888         if (f == NULL) {
 889                 if (opt_verbosejni)
 890                         printf("failed ]\n");
 891
 892                 exceptions_throw_unsatisfiedlinkerror(m->name);
 893         }
 894
 895         return f;
 896 }
 897 #endif /* !defined(WITH_STATIC_CLASSPATH) */
 898
 899
 900 /* native_new_and_init *********************************************************
 901
 902    Creates a new object on the heap and calls the initializer.
 903    Returns the object pointer or NULL if memory is exhausted.
 904
 905 *******************************************************************************/
 906
 907 java_handle_t *native_new_and_init(classinfo *c)
 908 {
 909         methodinfo    *m;
 910         java_handle_t *o;
 911
 912         if (c == NULL)
 913                 vm_abort("native_new_and_init: c == NULL");
 914
 915         /* create object */
 916
 917         o = builtin_new(c);
 918
 919         if (o == NULL)
 920                 return NULL;
 921
 922         /* try to find the initializer */
 923
 924         m = class_findmethod(c, utf_init, utf_void__void);
 925
 926         /* ATTENTION: returning the object here is ok, since the class may
 927        not have an initializer */
 928
 929         if (m == NULL)
 930                 return o;
 931
 932         /* call initializer */
 933
 934         (void) vm_call_method(m, o);
 935
 936         return o;
 937 }
 938
 939
 940 java_handle_t *native_new_and_init_string(classinfo *c, java_handle_t *s)
 941 {
 942         methodinfo    *m;
 943         java_handle_t *o;
 944
 945         if (c == NULL)
 946                 vm_abort("native_new_and_init_string: c == NULL");
 947
 948         /* create object */
 949
 950         o = builtin_new(c);
 951
 952         if (o == NULL)
 953                 return NULL;
 954
 955         /* find initializer */
 956
 957         m = class_findmethod(c, utf_init, utf_java_lang_String__void);
 958
 959         /* initializer not found */
 960
 961         if (m == NULL)
 962                 return NULL;
 963
 964         /* call initializer */
 965
 966         (void) vm_call_method(m, o, s);
 967
 968         return o;
 969 }
 970
 971
 972 /*
 973  * These are local overrides for various environment variables in Emacs.
 974  * Please do not remove this and leave it at the end of the file, where
 975  * Emacs will automagically detect them.
 976  * ---------------------------------------------------------------------
 977  * Local variables:
 978  * mode: c
 979  * indent-tabs-mode: t
 980  * c-basic-offset: 4
 981  * tab-width: 4
 982  * End:
 983  */