src/native/jni.cpp

   1 /* src/native/jni.cpp - implementation of the Java Native Interface functions
   2
   3    Copyright (C) 1996-2005, 2006, 2007, 2008
   4    CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
   5
   6    This file is part of CACAO.
   7
   8    This program is free software; you can redistribute it and/or
   9    modify it under the terms of the GNU General Public License as
  10    published by the Free Software Foundation; either version 2, or (at
  11    your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful, but
  14    WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16    General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  21    02110-1301, USA.
  22
  23 */
  24
  25
  26 #include "config.h"
  27
  28 #include <assert.h>
  29 #include <stdint.h>
  30 #include <string.h>
  31
  32 #include "vm/types.h"
  33
  34 #include "mm/gc.hpp"
  35 #include "mm/memory.h"
  36
  37 #include "native/jni.h"
  38 #include "native/llni.h"
  39 #include "native/localref.h"
  40 #include "native/native.h"
  41
  42 #if defined(ENABLE_JAVASE)
  43 # if defined(WITH_JAVA_RUNTIME_LIBRARY_GNU_CLASSPATH)
  44 #  include "native/include/gnu_classpath_Pointer.h"
  45
  46 #  if SIZEOF_VOID_P == 8
  47 #   include "native/include/gnu_classpath_Pointer64.h"
  48 #  else
  49 #   include "native/include/gnu_classpath_Pointer32.h"
  50 #  endif
  51 # endif
  52 #endif
  53
  54 #include "native/include/java_lang_Object.h"
  55 #include "native/include/java_lang_String.h"
  56 #include "native/include/java_lang_Throwable.h"
  57
  58 #if defined(ENABLE_JAVASE)
  59
  60 # if defined(WITH_JAVA_RUNTIME_LIBRARY_OPENJDK)
  61 #  include "native/include/java_nio_ByteBuffer.h"       /* required by j.l.CL */
  62 # endif
  63
  64 /* java_lang_ClassLoader is used in java_lang_Class and vice versa, so
  65    we pre-define it here to prevent a compiler warning for Sun
  66    configurations. */
  67
  68 struct java_lang_ClassLoader;
  69
  70 # include "native/include/java_lang_Class.h"
  71 # include "native/include/java_lang_ClassLoader.h"
  72
  73 # include "native/include/java_lang_reflect_Constructor.h"
  74 # include "native/include/java_lang_reflect_Field.h"
  75 # include "native/include/java_lang_reflect_Method.h"
  76
  77 # include "native/include/java_nio_Buffer.h"
  78
  79 # if defined(WITH_JAVA_RUNTIME_LIBRARY_GNU_CLASSPATH)
  80 #  include "native/include/java_lang_reflect_VMConstructor.h"
  81 #  include "native/include/java_lang_reflect_VMField.h"
  82 #  include "native/include/java_lang_reflect_VMMethod.h"
  83
  84 #  include "native/include/java_nio_DirectByteBufferImpl.h"
  85 # endif
  86 #elif defined(ENABLE_JAVAME_CLDC1_1)
  87 # include "native/include/java_lang_Class.h"
  88 #endif
  89
  90 #if defined(ENABLE_JVMTI)
  91 # include "native/jvmti/cacaodbg.h"
  92 #endif
  93
  94 #if defined(ENABLE_JAVASE)
  95 # include "native/vm/reflect.h"
  96 #endif
  97
  98 #include "threads/lock-common.h"
  99 #include "threads/thread.h"
 100
 101 #include "toolbox/logging.h"
 102
 103 #include "vm/array.h"
 104 #include "vm/builtin.h"
 105 #include "vm/exceptions.h"
 106 #include "vm/global.h"
 107 #include "vm/initialize.h"
 108 #include "vm/primitive.hpp"
 109 #include "vm/resolve.h"
 110 #include "vm/stringlocal.h"
 111 #include "vm/vm.hpp"
 112
 113 #include "vm/jit/argument.h"
 114 #include "vm/jit/asmpart.h"
 115 #include "vm/jit/jit.h"
 116 #include "vm/jit/stacktrace.h"
 117
 118 #include "vmcore/loader.h"
 119 #include "vmcore/options.h"
 120 #include "vmcore/statistics.h"
 121
 122
 123 /* debug **********************************************************************/
 124
 125 #if !defined(NDEBUG)
 126
 127 # define TRACEJNICALLS(x)                                               \
 128     do {                                                                                \
 129         if (opt_TraceJNICalls) {                                \
 130             log_println x;                                              \
 131         }                                                                               \
 132     } while (0)
 133
 134 # define TRACEJNICALLSENTER(x)                                                                  \
 135     do {                                                                                                                \
 136         if (opt_TraceJNICalls) {                                                                \
 137                         log_start();                                                                            \
 138             log_print x;                                                                                \
 139         }                                                                                                               \
 140     } while (0)
 141
 142 # define TRACEJNICALLSEXIT(x)                                                                   \
 143     do {                                                                                                                \
 144         if (opt_TraceJNICalls) {                                                                \
 145                         log_print x;                                                                            \
 146                         log_finish();                                                                           \
 147         }                                                                                                               \
 148     } while (0)
 149
 150 #else
 151
 152 # define TRACEJNICALLS(x)
 153 # define TRACEJNICALLSENTER(x)
 154 # define TRACEJNICALLSEXIT(x)
 155
 156 #endif
 157
 158
 159 /* global variables ***********************************************************/
 160
 161 /* global reference table *****************************************************/
 162
 163 /* hashsize must be power of 2 */
 164
 165 #define HASHTABLE_GLOBAL_REF_SIZE    64 /* initial size of globalref-hash     */
 166
 167 static hashtable *hashtable_global_ref; /* hashtable for globalrefs           */
 168
 169
 170 /* direct buffer stuff ********************************************************/
 171
 172 #if defined(ENABLE_JAVASE)
 173 static classinfo *class_java_nio_Buffer;
 174
 175 # if defined(WITH_JAVA_RUNTIME_LIBRARY_GNU_CLASSPATH)
 176
 177 static classinfo *class_java_nio_DirectByteBufferImpl;
 178 static classinfo *class_java_nio_DirectByteBufferImpl_ReadWrite;
 179
 180 #  if SIZEOF_VOID_P == 8
 181 static classinfo *class_gnu_classpath_Pointer64;
 182 #  else
 183 static classinfo *class_gnu_classpath_Pointer32;
 184 #  endif
 185
 186 static methodinfo *dbbirw_init;
 187
 188 # elif defined(WITH_JAVA_RUNTIME_LIBRARY_OPENJDK)
 189
 190 static classinfo *class_sun_nio_ch_DirectBuffer;
 191 static classinfo *class_java_nio_DirectByteBuffer;
 192
 193 static methodinfo *dbb_init;
 194
 195 # endif
 196 #endif
 197
 198
 199 /* some forward declarations **************************************************/
 200
 201 extern "C" {
 202 jobject jni_NewLocalRef(JNIEnv *env, jobject ref);
 203 }
 204
 205
 206 /* jni_init ********************************************************************
 207
 208    Initialize the JNI subsystem.
 209
 210 *******************************************************************************/
 211
 212 bool jni_init(void)
 213 {
 214         TRACESUBSYSTEMINITIALIZATION("jni_init");
 215
 216         /* create global ref hashtable */
 217
 218         hashtable_global_ref = NEW(hashtable);
 219
 220         hashtable_create(hashtable_global_ref, HASHTABLE_GLOBAL_REF_SIZE);
 221
 222
 223 #if defined(ENABLE_JAVASE)
 224         /* Direct buffer stuff. */
 225
 226         if (!(class_java_nio_Buffer =
 227                   load_class_bootstrap(utf_new_char("java/nio/Buffer"))) ||
 228                 !link_class(class_java_nio_Buffer))
 229                 return false;
 230
 231 # if defined(WITH_JAVA_RUNTIME_LIBRARY_GNU_CLASSPATH)
 232
 233         if (!(class_java_nio_DirectByteBufferImpl =
 234                   load_class_bootstrap(utf_new_char("java/nio/DirectByteBufferImpl"))) ||
 235                 !link_class(class_java_nio_DirectByteBufferImpl))
 236                 return false;
 237
 238         if (!(class_java_nio_DirectByteBufferImpl_ReadWrite =
 239                   load_class_bootstrap(utf_new_char("java/nio/DirectByteBufferImpl$ReadWrite"))) ||
 240                 !link_class(class_java_nio_DirectByteBufferImpl_ReadWrite))
 241                 return false;
 242
 243         if (!(dbbirw_init =
 244                 class_resolvemethod(class_java_nio_DirectByteBufferImpl_ReadWrite,
 245                                                         utf_init,
 246                                                         utf_new_char("(Ljava/lang/Object;Lgnu/classpath/Pointer;III)V"))))
 247                 return false;
 248
 249 #  if SIZEOF_VOID_P == 8
 250         if (!(class_gnu_classpath_Pointer64 =
 251                   load_class_bootstrap(utf_new_char("gnu/classpath/Pointer64"))) ||
 252                 !link_class(class_gnu_classpath_Pointer64))
 253                 return false;
 254 #  else
 255         if (!(class_gnu_classpath_Pointer32 =
 256                   load_class_bootstrap(utf_new_char("gnu/classpath/Pointer32"))) ||
 257                 !link_class(class_gnu_classpath_Pointer32))
 258                 return false;
 259 #  endif
 260
 261 # elif defined(WITH_JAVA_RUNTIME_LIBRARY_OPENJDK)
 262
 263         if (!(class_sun_nio_ch_DirectBuffer =
 264                   load_class_bootstrap(utf_new_char("sun/nio/ch/DirectBuffer"))))
 265                 vm_abort("jni_init: loading sun/nio/ch/DirectBuffer failed");
 266
 267         if (!link_class(class_sun_nio_ch_DirectBuffer))
 268                 vm_abort("jni_init: linking sun/nio/ch/DirectBuffer failed");
 269
 270         if (!(class_java_nio_DirectByteBuffer =
 271                   load_class_bootstrap(utf_new_char("java/nio/DirectByteBuffer"))))
 272                 vm_abort("jni_init: loading java/nio/DirectByteBuffer failed");
 273
 274         if (!link_class(class_java_nio_DirectByteBuffer))
 275                 vm_abort("jni_init: linking java/nio/DirectByteBuffer failed");
 276
 277         if (!(dbb_init =
 278                   class_resolvemethod(class_java_nio_DirectByteBuffer,
 279                                                           utf_init,
 280                                                           utf_new_char("(JI)V"))))
 281                 vm_abort("jni_init: resolving java/nio/DirectByteBuffer.init(JI)V failed");
 282
 283 # endif
 284
 285 #endif /* defined(ENABLE_JAVASE) */
 286
 287         return true;
 288 }
 289
 290
 291 /* jni_version_check ***********************************************************
 292
 293    Check if the given JNI version is supported.
 294
 295    IN:
 296        version....JNI version to check
 297
 298    RETURN VALUE:
 299        true.......supported
 300        false......not supported
 301
 302 *******************************************************************************/
 303
 304 bool jni_version_check(int version)
 305 {
 306         switch (version) {
 307         case JNI_VERSION_1_1:
 308         case JNI_VERSION_1_2:
 309         case JNI_VERSION_1_4:
 310         case JNI_VERSION_1_6:
 311                 return true;
 312         default:
 313                 return false;
 314         }
 315 }
 316
 317
 318 /* _Jv_jni_CallObjectMethod ****************************************************
 319
 320    Internal function to call Java Object methods.
 321
 322 *******************************************************************************/
 323
 324 static java_handle_t *_Jv_jni_CallObjectMethod(java_handle_t *o,
 325                                                                                            vftbl_t *vftbl,
 326                                                                                            methodinfo *m, va_list ap)
 327 {
 328         methodinfo    *resm;
 329         java_handle_t *ro;
 330
 331         STATISTICS(jniinvokation());
 332
 333         if (m == NULL) {
 334                 exceptions_throw_nullpointerexception();
 335                 return NULL;
 336         }
 337
 338         /* Class initialization is done by the JIT compiler.  This is ok
 339            since a static method always belongs to the declaring class. */
 340
 341         if (m->flags & ACC_STATIC) {
 342                 /* For static methods we reset the object. */
 343
 344                 if (o != NULL)
 345                         o = NULL;
 346
 347                 /* for convenience */
 348
 349                 resm = m;
 350
 351         } else {
 352                 /* For instance methods we make a virtual function table lookup. */
 353
 354                 resm = method_vftbl_lookup(vftbl, m);
 355         }
 356
 357         STATISTICS(jnicallXmethodnvokation());
 358
 359         ro = vm_call_method_valist(resm, o, ap);
 360
 361         return ro;
 362 }
 363
 364
 365 /* _Jv_jni_CallObjectMethodA ***************************************************
 366
 367    Internal function to call Java Object methods.
 368
 369 *******************************************************************************/
 370
 371 static java_handle_t *_Jv_jni_CallObjectMethodA(java_handle_t *o,
 372                                                                                                 vftbl_t *vftbl,
 373                                                                                                 methodinfo *m,
 374                                                                                                 const jvalue *args)
 375 {
 376         methodinfo    *resm;
 377         java_handle_t *ro;
 378
 379         STATISTICS(jniinvokation());
 380
 381         if (m == NULL) {
 382                 exceptions_throw_nullpointerexception();
 383                 return NULL;
 384         }
 385
 386         /* Class initialization is done by the JIT compiler.  This is ok
 387            since a static method always belongs to the declaring class. */
 388
 389         if (m->flags & ACC_STATIC) {
 390                 /* For static methods we reset the object. */
 391
 392                 if (o != NULL)
 393                         o = NULL;
 394
 395                 /* for convenience */
 396
 397                 resm = m;
 398
 399         } else {
 400                 /* For instance methods we make a virtual function table lookup. */
 401
 402                 resm = method_vftbl_lookup(vftbl, m);
 403         }
 404
 405         STATISTICS(jnicallXmethodnvokation());
 406
 407         ro = vm_call_method_jvalue(resm, o, args);
 408
 409         return ro;
 410 }
 411
 412
 413 /* _Jv_jni_CallIntMethod *******************************************************
 414
 415    Internal function to call Java integer class methods (boolean,
 416    byte, char, short, int).
 417
 418 *******************************************************************************/
 419
 420 static jint _Jv_jni_CallIntMethod(java_handle_t *o, vftbl_t *vftbl,
 421                                                                   methodinfo *m, va_list ap)
 422 {
 423         methodinfo *resm;
 424         jint        i;
 425
 426         STATISTICS(jniinvokation());
 427
 428         if (m == NULL) {
 429                 exceptions_throw_nullpointerexception();
 430                 return 0;
 431         }
 432
 433         /* Class initialization is done by the JIT compiler.  This is ok
 434            since a static method always belongs to the declaring class. */
 435
 436         if (m->flags & ACC_STATIC) {
 437                 /* For static methods we reset the object. */
 438
 439                 if (o != NULL)
 440                         o = NULL;
 441
 442                 /* for convenience */
 443
 444                 resm = m;
 445
 446         } else {
 447                 /* For instance methods we make a virtual function table lookup. */
 448
 449                 resm = method_vftbl_lookup(vftbl, m);
 450         }
 451
 452         STATISTICS(jnicallXmethodnvokation());
 453
 454         i = vm_call_method_int_valist(resm, o, ap);
 455
 456         return i;
 457 }
 458
 459
 460 /* _Jv_jni_CallIntMethodA ******************************************************
 461
 462    Internal function to call Java integer class methods (boolean,
 463    byte, char, short, int).
 464
 465 *******************************************************************************/
 466
 467 static jint _Jv_jni_CallIntMethodA(java_handle_t *o, vftbl_t *vftbl,
 468                                                                    methodinfo *m, const jvalue *args)
 469 {
 470         methodinfo *resm;
 471         jint        i;
 472
 473         STATISTICS(jniinvokation());
 474
 475         if (m == NULL) {
 476                 exceptions_throw_nullpointerexception();
 477                 return 0;
 478         }
 479
 480         /* Class initialization is done by the JIT compiler.  This is ok
 481            since a static method always belongs to the declaring class. */
 482
 483         if (m->flags & ACC_STATIC) {
 484                 /* For static methods we reset the object. */
 485
 486                 if (o != NULL)
 487                         o = NULL;
 488
 489                 /* for convenience */
 490
 491                 resm = m;
 492
 493         } else {
 494                 /* For instance methods we make a virtual function table lookup. */
 495
 496                 resm = method_vftbl_lookup(vftbl, m);
 497         }
 498
 499         STATISTICS(jnicallXmethodnvokation());
 500
 501         i = vm_call_method_int_jvalue(resm, o, args);
 502
 503         return i;
 504 }
 505
 506
 507 /* _Jv_jni_CallLongMethod ******************************************************
 508
 509    Internal function to call Java long methods.
 510
 511 *******************************************************************************/
 512
 513 static jlong _Jv_jni_CallLongMethod(java_handle_t *o, vftbl_t *vftbl,
 514                                                                         methodinfo *m, va_list ap)
 515 {
 516         methodinfo *resm;
 517         jlong       l;
 518
 519         STATISTICS(jniinvokation());
 520
 521         if (m == NULL) {
 522                 exceptions_throw_nullpointerexception();
 523                 return 0;
 524         }
 525
 526         /* Class initialization is done by the JIT compiler.  This is ok
 527            since a static method always belongs to the declaring class. */
 528
 529         if (m->flags & ACC_STATIC) {
 530                 /* For static methods we reset the object. */
 531
 532                 if (o != NULL)
 533                         o = NULL;
 534
 535                 /* for convenience */
 536
 537                 resm = m;
 538
 539         } else {
 540                 /* For instance methods we make a virtual function table lookup. */
 541
 542                 resm = method_vftbl_lookup(vftbl, m);
 543         }
 544
 545         STATISTICS(jnicallXmethodnvokation());
 546
 547         l = vm_call_method_long_valist(resm, o, ap);
 548
 549         return l;
 550 }
 551
 552
 553 /* _Jv_jni_CallLongMethodA *****************************************************
 554
 555    Internal function to call Java long methods.
 556
 557 *******************************************************************************/
 558
 559 static jlong _Jv_jni_CallLongMethodA(java_handle_t *o, vftbl_t *vftbl,
 560                                                                          methodinfo *m, const jvalue *args)
 561 {
 562         methodinfo *resm;
 563         jlong       l;
 564
 565         STATISTICS(jniinvokation());
 566
 567         if (m == NULL) {
 568                 exceptions_throw_nullpointerexception();
 569                 return 0;
 570         }
 571
 572         /* Class initialization is done by the JIT compiler.  This is ok
 573            since a static method always belongs to the declaring class. */
 574
 575         if (m->flags & ACC_STATIC) {
 576                 /* For static methods we reset the object. */
 577
 578                 if (o != NULL)
 579                         o = NULL;
 580
 581                 /* for convenience */
 582
 583                 resm = m;
 584         }
 585         else {
 586                 /* For instance methods we make a virtual function table lookup. */
 587
 588                 resm = method_vftbl_lookup(vftbl, m);
 589         }
 590
 591         STATISTICS(jnicallXmethodnvokation());
 592
 593         l = vm_call_method_long_jvalue(resm, o, args);
 594
 595         return l;
 596 }
 597
 598
 599 /* _Jv_jni_CallFloatMethod *****************************************************
 600
 601    Internal function to call Java float methods.
 602
 603 *******************************************************************************/
 604
 605 static jfloat _Jv_jni_CallFloatMethod(java_handle_t *o, vftbl_t *vftbl,
 606                                                                           methodinfo *m, va_list ap)
 607 {
 608         methodinfo *resm;
 609         jfloat      f;
 610
 611         /* Class initialization is done by the JIT compiler.  This is ok
 612            since a static method always belongs to the declaring class. */
 613
 614         if (m->flags & ACC_STATIC) {
 615                 /* For static methods we reset the object. */
 616
 617                 if (o != NULL)
 618                         o = NULL;
 619
 620                 /* for convenience */
 621
 622                 resm = m;
 623
 624         } else {
 625                 /* For instance methods we make a virtual function table lookup. */
 626
 627                 resm = method_vftbl_lookup(vftbl, m);
 628         }
 629
 630         STATISTICS(jnicallXmethodnvokation());
 631
 632         f = vm_call_method_float_valist(resm, o, ap);
 633
 634         return f;
 635 }
 636
 637
 638 /* _Jv_jni_CallFloatMethodA ****************************************************
 639
 640    Internal function to call Java float methods.
 641
 642 *******************************************************************************/
 643
 644 static jfloat _Jv_jni_CallFloatMethodA(java_handle_t *o, vftbl_t *vftbl,
 645                                                                            methodinfo *m, const jvalue *args)
 646 {
 647         methodinfo *resm;
 648         jfloat      f;
 649
 650         /* Class initialization is done by the JIT compiler.  This is ok
 651            since a static method always belongs to the declaring class. */
 652
 653         if (m->flags & ACC_STATIC) {
 654                 /* For static methods we reset the object. */
 655
 656                 if (o != NULL)
 657                         o = NULL;
 658
 659                 /* for convenience */
 660
 661                 resm = m;
 662         }
 663         else {
 664                 /* For instance methods we make a virtual function table lookup. */
 665
 666                 resm = method_vftbl_lookup(vftbl, m);
 667         }
 668
 669         STATISTICS(jnicallXmethodnvokation());
 670
 671         f = vm_call_method_float_jvalue(resm, o, args);
 672
 673         return f;
 674 }
 675
 676
 677 /* _Jv_jni_CallDoubleMethod ****************************************************
 678
 679    Internal function to call Java double methods.
 680
 681 *******************************************************************************/
 682
 683 static jdouble _Jv_jni_CallDoubleMethod(java_handle_t *o, vftbl_t *vftbl,
 684                                                                                 methodinfo *m, va_list ap)
 685 {
 686         methodinfo *resm;
 687         jdouble     d;
 688
 689         /* Class initialization is done by the JIT compiler.  This is ok
 690            since a static method always belongs to the declaring class. */
 691
 692         if (m->flags & ACC_STATIC) {
 693                 /* For static methods we reset the object. */
 694
 695                 if (o != NULL)
 696                         o = NULL;
 697
 698                 /* for convenience */
 699
 700                 resm = m;
 701
 702         } else {
 703                 /* For instance methods we make a virtual function table lookup. */
 704
 705                 resm = method_vftbl_lookup(vftbl, m);
 706         }
 707
 708         d = vm_call_method_double_valist(resm, o, ap);
 709
 710         return d;
 711 }
 712
 713
 714 /* _Jv_jni_CallDoubleMethodA ***************************************************
 715
 716    Internal function to call Java double methods.
 717
 718 *******************************************************************************/
 719
 720 static jdouble _Jv_jni_CallDoubleMethodA(java_handle_t *o, vftbl_t *vftbl,
 721                                                                                  methodinfo *m, const jvalue *args)
 722 {
 723         methodinfo *resm;
 724         jdouble     d;
 725
 726         /* Class initialization is done by the JIT compiler.  This is ok
 727            since a static method always belongs to the declaring class. */
 728
 729         if (m->flags & ACC_STATIC) {
 730                 /* For static methods we reset the object. */
 731
 732                 if (o != NULL)
 733                         o = NULL;
 734
 735                 /* for convenience */
 736
 737                 resm = m;
 738         }
 739         else {
 740                 /* For instance methods we make a virtual function table lookup. */
 741
 742                 resm = method_vftbl_lookup(vftbl, m);
 743         }
 744
 745         d = vm_call_method_double_jvalue(resm, o, args);
 746
 747         return d;
 748 }
 749
 750
 751 /* _Jv_jni_CallVoidMethod ******************************************************
 752
 753    Internal function to call Java void methods.
 754
 755 *******************************************************************************/
 756
 757 static void _Jv_jni_CallVoidMethod(java_handle_t *o, vftbl_t *vftbl,
 758                                                                    methodinfo *m, va_list ap)
 759 {
 760         methodinfo *resm;
 761
 762         if (m == NULL) {
 763                 exceptions_throw_nullpointerexception();
 764                 return;
 765         }
 766
 767         /* Class initialization is done by the JIT compiler.  This is ok
 768            since a static method always belongs to the declaring class. */
 769
 770         if (m->flags & ACC_STATIC) {
 771                 /* For static methods we reset the object. */
 772
 773                 if (o != NULL)
 774                         o = NULL;
 775
 776                 /* for convenience */
 777
 778                 resm = m;
 779
 780         } else {
 781                 /* For instance methods we make a virtual function table lookup. */
 782
 783                 resm = method_vftbl_lookup(vftbl, m);
 784         }
 785
 786         STATISTICS(jnicallXmethodnvokation());
 787
 788         (void) vm_call_method_valist(resm, o, ap);
 789 }
 790
 791
 792 /* _Jv_jni_CallVoidMethodA *****************************************************
 793
 794    Internal function to call Java void methods.
 795
 796 *******************************************************************************/
 797
 798 static void _Jv_jni_CallVoidMethodA(java_handle_t *o, vftbl_t *vftbl,
 799                                                                         methodinfo *m, const jvalue *args)
 800 {
 801         methodinfo *resm;
 802
 803         if (m == NULL) {
 804                 exceptions_throw_nullpointerexception();
 805                 return;
 806         }
 807
 808         /* Class initialization is done by the JIT compiler.  This is ok
 809            since a static method always belongs to the declaring class. */
 810
 811         if (m->flags & ACC_STATIC) {
 812                 /* For static methods we reset the object. */
 813
 814                 if (o != NULL)
 815                         o = NULL;
 816
 817                 /* for convenience */
 818
 819                 resm = m;
 820
 821         } else {
 822                 /* For instance methods we make a virtual function table lookup. */
 823
 824                 resm = method_vftbl_lookup(vftbl, m);
 825         }
 826
 827         STATISTICS(jnicallXmethodnvokation());
 828
 829         (void) vm_call_method_jvalue(resm, o, args);
 830 }
 831
 832
 833 // JNI functions are exported as C functions.
 834 extern "C" {
 835
 836 /* GetVersion ******************************************************************
 837
 838    Returns the major version number in the higher 16 bits and the
 839    minor version number in the lower 16 bits.
 840
 841 *******************************************************************************/
 842
 843 jint _Jv_JNI_GetVersion(JNIEnv *env)
 844 {
 845         TRACEJNICALLS(("_Jv_JNI_GetVersion(env=%p)", env));
 846
 847         /* We support JNI 1.6. */
 848
 849         return JNI_VERSION_1_6;
 850 }
 851
 852
 853 /* Class Operations ***********************************************************/
 854
 855 /* DefineClass *****************************************************************
 856
 857    Loads a class from a buffer of raw class data. The buffer
 858    containing the raw class data is not referenced by the VM after the
 859    DefineClass call returns, and it may be discarded if desired.
 860
 861 *******************************************************************************/
 862
 863 jclass _Jv_JNI_DefineClass(JNIEnv *env, const char *name, jobject loader,
 864                                                    const jbyte *buf, jsize bufLen)
 865 {
 866 #if defined(ENABLE_JAVASE)
 867         utf             *u;
 868         classloader_t   *cl;
 869         classinfo       *c;
 870         java_lang_Class *co;
 871
 872         TRACEJNICALLS(("_Jv_JNI_DefineClass(env=%p, name=%s, loader=%p, buf=%p, bufLen=%d)", env, name, loader, buf, bufLen));
 873
 874         u  = utf_new_char(name);
 875         cl = loader_hashtable_classloader_add((java_handle_t *) loader);
 876
 877         c = class_define(u, cl, bufLen, (uint8_t *) buf, NULL);
 878
 879         co = LLNI_classinfo_wrap(c);
 880
 881         return (jclass) jni_NewLocalRef(env, (jobject) co);
 882 #else
 883         vm_abort("_Jv_JNI_DefineClass: not implemented in this configuration");
 884
 885         /* keep compiler happy */
 886
 887         return 0;
 888 #endif
 889 }
 890
 891
 892 /* FindClass *******************************************************************
 893
 894    This function loads a locally-defined class. It searches the
 895    directories and zip files specified by the CLASSPATH environment
 896    variable for the class with the specified name.
 897
 898 *******************************************************************************/
 899
 900 jclass jni_FindClass(JNIEnv *env, const char *name)
 901 {
 902 #if defined(ENABLE_JAVASE)
 903
 904         utf             *u;
 905         classinfo       *cc;
 906         classinfo       *c;
 907         java_lang_Class *co;
 908
 909         TRACEJNICALLS(("jni_FindClass(env=%p, name=%s)", env, name));
 910
 911         /* FIXME If name is NULL we have a problem here. */
 912
 913         u = utf_new_char_classname((char *) name);
 914
 915         if ((u == NULL) /*|| (int)strlen(name) > symbolOopDesc::max_length() */) {
 916                 exceptions_throw_noclassdeffounderror(u);
 917                 return NULL;
 918         }
 919
 920         /* Check stacktrace for classloader, if one found use it,
 921            otherwise use the system classloader. */
 922
 923         /* Quote from the JNI documentation:
 924
 925            In the Java 2 Platform, FindClass locates the class loader
 926            associated with the current native method.  If the native code
 927            belongs to a system class, no class loader will be
 928            involved. Otherwise, the proper class loader will be invoked to
 929            load and link the named class. When FindClass is called through
 930            the Invocation Interface, there is no current native method or
 931            its associated class loader. In that case, the result of
 932            ClassLoader.getBaseClassLoader is used." */
 933
 934         cc = stacktrace_get_current_class();
 935
 936         if (cc == NULL)
 937                 c = load_class_from_sysloader(u);
 938         else
 939                 c = load_class_from_classloader(u, cc->classloader);
 940
 941         if (c == NULL) {
 942                 resolve_handle_pending_exception(true);
 943                 return NULL;
 944         }
 945
 946         if (!link_class(c))
 947                 return NULL;
 948
 949         co = LLNI_classinfo_wrap(c);
 950
 951         return (jclass) jni_NewLocalRef(env, (jobject) co);
 952
 953 #elif defined(ENABLE_JAVAME_CLDC1_1)
 954
 955         utf       *u;
 956         classinfo *c;
 957
 958         TRACEJNICALLS(("jni_FindClass(env=%p, name=%s)", env, name));
 959
 960         u = utf_new_char_classname((char *) name);
 961         c = load_class_bootstrap(u);
 962
 963         if (c == NULL) {
 964                 resolve_handle_pending_exception(true);
 965                 return NULL;
 966         }
 967
 968         if (!link_class(c))
 969                 return NULL;
 970
 971         return (jclass) jni_NewLocalRef(env, (jobject) c);
 972
 973 #else
 974         vm_abort("jni_FindClass: not implemented in this configuration");
 975
 976         /* keep compiler happy */
 977
 978         return NULL;
 979 #endif
 980 }
 981
 982
 983 /* GetSuperclass ***************************************************************
 984
 985    If clazz represents any class other than the class Object, then
 986    this function returns the object that represents the superclass of
 987    the class specified by clazz.
 988
 989 *******************************************************************************/
 990
 991 jclass _Jv_JNI_GetSuperclass(JNIEnv *env, jclass sub)
 992 {
 993         classinfo       *c;
 994         classinfo       *super;
 995         java_lang_Class *co;
 996
 997         TRACEJNICALLS(("_Jv_JNI_GetSuperclass(env=%p, sub=%p)", env, sub));
 998
 999         c = LLNI_classinfo_unwrap(sub);
1000
1001         if (c == NULL)
1002                 return NULL;
1003
1004         super = class_get_superclass(c);
1005
1006         co = LLNI_classinfo_wrap(super);
1007
1008         return (jclass) jni_NewLocalRef(env, (jobject) co);
1009 }
1010
1011
1012 /* IsAssignableFrom ************************************************************
1013
1014    Determines whether an object of sub can be safely cast to sup.
1015
1016 *******************************************************************************/
1017
1018 jboolean _Jv_JNI_IsAssignableFrom(JNIEnv *env, jclass sub, jclass sup)
1019 {
1020         classinfo *to;
1021         classinfo *from;
1022
1023         TRACEJNICALLS(("_Jv_JNI_IsAssignableFrom(env=%p, sub=%p, sup=%p)", env, sub, sup));
1024
1025         to   = (classinfo *) sup;
1026         from = (classinfo *) sub;
1027
1028         return class_is_assignable_from(to, from);
1029 }
1030
1031
1032 /* Throw ***********************************************************************
1033
1034    Causes a java.lang.Throwable object to be thrown.
1035
1036 *******************************************************************************/
1037
1038 jint _Jv_JNI_Throw(JNIEnv *env, jthrowable obj)
1039 {
1040         java_handle_t *o;
1041
1042         STATISTICS(jniinvokation());
1043
1044         o = (java_handle_t *) obj;
1045
1046         exceptions_set_exception(o);
1047
1048         return JNI_OK;
1049 }
1050
1051
1052 /* ThrowNew ********************************************************************
1053
1054    Constructs an exception object from the specified class with the
1055    message specified by message and causes that exception to be
1056    thrown.
1057
1058 *******************************************************************************/
1059
1060 jint _Jv_JNI_ThrowNew(JNIEnv* env, jclass clazz, const char *msg)
1061 {
1062         classinfo     *c;
1063         java_handle_t *o;
1064         java_handle_t *s;
1065
1066         STATISTICS(jniinvokation());
1067
1068         c = LLNI_classinfo_unwrap(clazz);
1069         if (msg == NULL)
1070                 msg = "";
1071         s = javastring_new_from_utf_string(msg);
1072
1073         /* instantiate exception object */
1074
1075         o = native_new_and_init_string(c, s);
1076
1077         if (o == NULL)
1078                 return -1;
1079
1080         exceptions_set_exception(o);
1081
1082         return 0;
1083 }
1084
1085
1086 /* ExceptionOccurred ***********************************************************
1087
1088    Determines if an exception is being thrown. The exception stays
1089    being thrown until either the native code calls ExceptionClear(),
1090    or the Java code handles the exception.
1091
1092 *******************************************************************************/
1093
1094 jthrowable _Jv_JNI_ExceptionOccurred(JNIEnv *env)
1095 {
1096         java_handle_t *o;
1097
1098         TRACEJNICALLS(("_Jv_JNI_ExceptionOccurred(env=%p)", env));
1099
1100         o = exceptions_get_exception();
1101
1102         return (jthrowable) jni_NewLocalRef(env, (jthrowable) o);
1103 }
1104
1105
1106 /* ExceptionDescribe ***********************************************************
1107
1108    Prints an exception and a backtrace of the stack to a system
1109    error-reporting channel, such as stderr. This is a convenience
1110    routine provided for debugging.
1111
1112 *******************************************************************************/
1113
1114 void jni_ExceptionDescribe(JNIEnv *env)
1115 {
1116         TRACEJNICALLS(("jni_ExceptionDescribe(env=%p)", env));
1117
1118         exceptions_print_stacktrace();
1119 }
1120
1121
1122 /* ExceptionClear **************************************************************
1123
1124    Clears any exception that is currently being thrown. If no
1125    exception is currently being thrown, this routine has no effect.
1126
1127 *******************************************************************************/
1128
1129 void jni_ExceptionClear(JNIEnv *env)
1130 {
1131         TRACEJNICALLS(("jni_ExceptionClear(env=%p)", env));
1132
1133         exceptions_clear_exception();
1134 }
1135
1136
1137 /* FatalError ******************************************************************
1138
1139    Raises a fatal error and does not expect the VM to recover. This
1140    function does not return.
1141
1142 *******************************************************************************/
1143
1144 void _Jv_JNI_FatalError(JNIEnv *env, const char *msg)
1145 {
1146         STATISTICS(jniinvokation());
1147
1148         /* this seems to be the best way */
1149
1150         vm_abort("JNI Fatal error: %s", msg);
1151 }
1152
1153
1154 /* PushLocalFrame **************************************************************
1155
1156    Creates a new local reference frame, in which at least a given
1157    number of local references can be created.
1158
1159 *******************************************************************************/
1160
1161 jint jni_PushLocalFrame(JNIEnv* env, jint capacity)
1162 {
1163         TRACEJNICALLS(("jni_PushLocalFrame(env=%p, capacity=%d)", env, capacity));
1164
1165         if (capacity <= 0)
1166                 return -1;
1167
1168         /* add new local reference frame to current table */
1169
1170         if (!localref_frame_push(capacity))
1171                 return -1;
1172
1173         return 0;
1174 }
1175
1176
1177 /* PopLocalFrame ***************************************************************
1178
1179    Pops off the current local reference frame, frees all the local
1180    references, and returns a local reference in the previous local
1181    reference frame for the given result object.
1182
1183 *******************************************************************************/
1184
1185 jobject jni_PopLocalFrame(JNIEnv* env, jobject result)
1186 {
1187         TRACEJNICALLS(("jni_PopLocalFrame(env=%p, result=%p)", env, result));
1188
1189         /* release all current local frames */
1190
1191         localref_frame_pop_all();
1192
1193         /* add local reference and return the value */
1194
1195         return jni_NewLocalRef(env, result);
1196 }
1197
1198
1199 /* DeleteLocalRef **************************************************************
1200
1201    Deletes the local reference pointed to by localRef.
1202
1203 *******************************************************************************/
1204
1205 void jni_DeleteLocalRef(JNIEnv *env, jobject localRef)
1206 {
1207         java_handle_t *o;
1208
1209         TRACEJNICALLS(("jni_DeleteLocalRef(env=%p, ref=%p)", env, localRef));
1210
1211         o = (java_handle_t *) localRef;
1212
1213         if (o == NULL)
1214                 return;
1215
1216         /* delete the reference */
1217
1218         localref_del(o);
1219 }
1220
1221
1222 /* IsSameObject ****************************************************************
1223
1224    Tests whether two references refer to the same Java object.
1225
1226 *******************************************************************************/
1227
1228 jboolean _Jv_JNI_IsSameObject(JNIEnv *env, jobject ref1, jobject ref2)
1229 {
1230         java_handle_t *o1;
1231         java_handle_t *o2;
1232         jboolean       result;
1233
1234         STATISTICS(jniinvokation());
1235
1236         o1 = (java_handle_t *) ref1;
1237         o2 = (java_handle_t *) ref2;
1238
1239         LLNI_CRITICAL_START;
1240
1241         if (LLNI_UNWRAP(o1) == LLNI_UNWRAP(o2))
1242                 result = JNI_TRUE;
1243         else
1244                 result = JNI_FALSE;
1245
1246         LLNI_CRITICAL_END;
1247
1248         return result;
1249 }
1250
1251
1252 /* NewLocalRef *****************************************************************
1253
1254    Creates a new local reference that refers to the same object as ref.
1255
1256 *******************************************************************************/
1257
1258 jobject jni_NewLocalRef(JNIEnv *env, jobject ref)
1259 {
1260         java_handle_t *o;
1261         java_handle_t *localref;
1262
1263         TRACEJNICALLS(("jni_NewLocalRef(env=%p, ref=%p)", env, ref));
1264
1265         o = (java_handle_t *) ref;
1266
1267         if (o == NULL)
1268                 return NULL;
1269
1270         /* insert the reference */
1271
1272         localref = localref_add(LLNI_DIRECT(o));
1273
1274         return (jobject) localref;
1275 }
1276
1277
1278 /* EnsureLocalCapacity *********************************************************
1279
1280    Ensures that at least a given number of local references can be
1281    created in the current thread
1282
1283 *******************************************************************************/
1284
1285 jint jni_EnsureLocalCapacity(JNIEnv* env, jint capacity)
1286 {
1287         localref_table *lrt;
1288
1289         TRACEJNICALLS(("jni_EnsureLocalCapacity(env=%p, capacity=%d)", env, capacity));
1290
1291         /* get local reference table (thread specific) */
1292
1293         lrt = LOCALREFTABLE;
1294
1295         /* check if capacity elements are available in the local references table */
1296
1297         if ((lrt->used + capacity) > lrt->capacity)
1298                 return jni_PushLocalFrame(env, capacity);
1299
1300         return 0;
1301 }
1302
1303
1304 /* AllocObject *****************************************************************
1305
1306    Allocates a new Java object without invoking any of the
1307    constructors for the object. Returns a reference to the object.
1308
1309 *******************************************************************************/
1310
1311 jobject _Jv_JNI_AllocObject(JNIEnv *env, jclass clazz)
1312 {
1313         classinfo     *c;
1314         java_handle_t *o;
1315
1316         STATISTICS(jniinvokation());
1317
1318         c = LLNI_classinfo_unwrap(clazz);
1319
1320         if ((c->flags & ACC_INTERFACE) || (c->flags & ACC_ABSTRACT)) {
1321                 exceptions_throw_instantiationexception(c);
1322                 return NULL;
1323         }
1324
1325         o = builtin_new(c);
1326
1327         return jni_NewLocalRef(env, (jobject) o);
1328 }
1329
1330
1331 /* NewObject *******************************************************************
1332
1333    Programmers place all arguments that are to be passed to the
1334    constructor immediately following the methodID
1335    argument. NewObject() accepts these arguments and passes them to
1336    the Java method that the programmer wishes to invoke.
1337
1338 *******************************************************************************/
1339
1340 jobject jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...)
1341 {
1342         java_handle_t *o;
1343         classinfo     *c;
1344         methodinfo    *m;
1345         va_list        ap;
1346
1347         TRACEJNICALLSENTER(("jni_NewObject(env=%p, clazz=%p, methodID=%p, ...)", env, clazz, methodID));
1348
1349         c = LLNI_classinfo_unwrap(clazz);
1350         m = (methodinfo *) methodID;
1351
1352         /* create object */
1353
1354         o = builtin_new(c);
1355
1356         if (o == NULL)
1357                 return NULL;
1358
1359         /* call constructor */
1360
1361         va_start(ap, methodID);
1362         _Jv_jni_CallVoidMethod(o, LLNI_vftbl_direct(o), m, ap);
1363         va_end(ap);
1364
1365         TRACEJNICALLSEXIT(("->%p", o));
1366
1367         return jni_NewLocalRef(env, (jobject) o);
1368 }
1369
1370
1371 /* NewObjectV ******************************************************************
1372
1373    Programmers place all arguments that are to be passed to the
1374    constructor in an args argument of type va_list that immediately
1375    follows the methodID argument. NewObjectV() accepts these
1376    arguments, and, in turn, passes them to the Java method that the
1377    programmer wishes to invoke.
1378
1379 *******************************************************************************/
1380
1381 jobject _Jv_JNI_NewObjectV(JNIEnv* env, jclass clazz, jmethodID methodID,
1382                                                    va_list args)
1383 {
1384         java_handle_t *o;
1385         classinfo     *c;
1386         methodinfo    *m;
1387
1388         STATISTICS(jniinvokation());
1389
1390         c = LLNI_classinfo_unwrap(clazz);
1391         m = (methodinfo *) methodID;
1392
1393         /* create object */
1394
1395         o = builtin_new(c);
1396
1397         if (o == NULL)
1398                 return NULL;
1399
1400         /* call constructor */
1401
1402         _Jv_jni_CallVoidMethod(o, LLNI_vftbl_direct(o), m, args);
1403
1404         return jni_NewLocalRef(env, (jobject) o);
1405 }
1406
1407
1408 /* NewObjectA *****************************************************************
1409
1410    Programmers place all arguments that are to be passed to the
1411    constructor in an args array of jvalues that immediately follows
1412    the methodID argument. NewObjectA() accepts the arguments in this
1413    array, and, in turn, passes them to the Java method that the
1414    programmer wishes to invoke.
1415
1416 *******************************************************************************/
1417
1418 jobject _Jv_JNI_NewObjectA(JNIEnv* env, jclass clazz, jmethodID methodID,
1419                                                    const jvalue *args)
1420 {
1421         java_handle_t *o;
1422         classinfo     *c;
1423         methodinfo    *m;
1424
1425         STATISTICS(jniinvokation());
1426
1427         c = LLNI_classinfo_unwrap(clazz);
1428         m = (methodinfo *) methodID;
1429
1430         /* create object */
1431
1432         o = builtin_new(c);
1433
1434         if (o == NULL)
1435                 return NULL;
1436
1437         /* call constructor */
1438
1439         _Jv_jni_CallVoidMethodA(o, LLNI_vftbl_direct(o), m, args);
1440
1441         return jni_NewLocalRef(env, (jobject) o);
1442 }
1443
1444
1445 /* GetObjectClass **************************************************************
1446
1447  Returns the class of an object.
1448
1449 *******************************************************************************/
1450
1451 jclass _Jv_JNI_GetObjectClass(JNIEnv *env, jobject obj)
1452 {
1453         java_handle_t   *o;
1454         classinfo       *c;
1455         java_lang_Class *co;
1456
1457         STATISTICS(jniinvokation());
1458
1459         o = (java_handle_t *) obj;
1460
1461         if ((o == NULL) || (LLNI_vftbl_direct(o) == NULL))
1462                 return NULL;
1463
1464         LLNI_class_get(o, c);
1465
1466         co = LLNI_classinfo_wrap(c);
1467
1468         return (jclass) jni_NewLocalRef(env, (jobject) co);
1469 }
1470
1471
1472 /* IsInstanceOf ****************************************************************
1473
1474    Tests whether an object is an instance of a class.
1475
1476 *******************************************************************************/
1477
1478 jboolean _Jv_JNI_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz)
1479 {
1480         classinfo     *c;
1481         java_handle_t *h;
1482
1483         TRACEJNICALLS(("_Jv_JNI_IsInstanceOf(env=%p, obj=%p, clazz=%p)", env, obj, clazz));
1484
1485         /* XXX Is this correct? */
1486         c = LLNI_classinfo_unwrap(clazz);
1487         h = (java_handle_t *) obj;
1488
1489         return class_is_instance(c, h);
1490 }
1491
1492
1493 /* Reflection Support *********************************************************/
1494
1495 /* FromReflectedMethod *********************************************************
1496
1497    Converts java.lang.reflect.Method or java.lang.reflect.Constructor
1498    object to a method ID.
1499
1500 *******************************************************************************/
1501
1502 jmethodID jni_FromReflectedMethod(JNIEnv *env, jobject method)
1503 {
1504 #if defined(ENABLE_JAVASE)
1505         java_handle_t                   *o;
1506         java_lang_reflect_Method        *rm;
1507         java_lang_reflect_Constructor   *rc;
1508         classinfo                       *c;
1509         methodinfo                      *m;
1510         int32_t                          slot;
1511
1512 #if defined(WITH_JAVA_RUNTIME_LIBRARY_GNU_CLASSPATH)
1513         java_lang_reflect_VMMethod      *rvmm;
1514         java_lang_reflect_VMConstructor *rvmc;
1515 #endif
1516
1517         TRACEJNICALLS(("jni_FromReflectedMethod(env=%p, method=%p)", env, method));
1518
1519         o = (java_handle_t *) method;
1520
1521         if (o == NULL)
1522                 return NULL;
1523
1524         if (o->vftbl->clazz == class_java_lang_reflect_Constructor) {
1525                 rc = (java_lang_reflect_Constructor *) method;
1526
1527 #if defined(WITH_JAVA_RUNTIME_LIBRARY_GNU_CLASSPATH)
1528
1529                 LLNI_field_get_ref(rc,   cons , rvmc);
1530                 LLNI_field_get_cls(rvmc, clazz, c);
1531                 LLNI_field_get_val(rvmc, slot , slot);
1532
1533 #elif defined(WITH_JAVA_RUNTIME_LIBRARY_OPENJDK)
1534
1535                 LLNI_field_get_cls(rc, clazz, c);
1536                 LLNI_field_get_val(rc, slot , slot);
1537
1538 #else
1539 # error unknown configuration
1540 #endif
1541         }
1542         else {
1543                 assert(o->vftbl->clazz == class_java_lang_reflect_Method);
1544
1545                 rm = (java_lang_reflect_Method *) method;
1546
1547 #if defined(WITH_JAVA_RUNTIME_LIBRARY_GNU_CLASSPATH)
1548
1549                 LLNI_field_get_ref(rm,   m ,    rvmm);
1550                 LLNI_field_get_cls(rvmm, clazz, c);
1551                 LLNI_field_get_val(rvmm, slot , slot);
1552
1553 #elif defined(WITH_JAVA_RUNTIME_LIBRARY_OPENJDK)
1554
1555                 LLNI_field_get_cls(rm, clazz, c);
1556                 LLNI_field_get_val(rm, slot , slot);
1557
1558 #else
1559 # error unknown configuration
1560 #endif
1561         }
1562
1563         m = &(c->methods[slot]);
1564
1565         return (jmethodID) m;
1566 #else
1567         vm_abort("jni_FromReflectedMethod: Not implemented in this configuration.");
1568
1569         /* Keep compiler happy. */
1570
1571         return NULL;
1572 #endif
1573 }
1574
1575
1576 /* FromReflectedField **********************************************************
1577
1578    Converts a java.lang.reflect.Field to a field ID.
1579
1580 *******************************************************************************/
1581
1582 jfieldID jni_FromReflectedField(JNIEnv* env, jobject field)
1583 {
1584 #if defined(ENABLE_JAVASE)
1585         java_lang_reflect_Field   *rf;
1586         classinfo                 *c;
1587         fieldinfo                 *f;
1588         int32_t                    slot;
1589
1590 #if defined(WITH_JAVA_RUNTIME_LIBRARY_GNU_CLASSPATH)
1591         java_lang_reflect_VMField *rvmf;
1592 #endif
1593
1594         TRACEJNICALLS(("jni_FromReflectedField(env=%p, field=%p)", env, field));
1595
1596         rf = (java_lang_reflect_Field *) field;
1597
1598         if (rf == NULL)
1599                 return NULL;
1600
1601 #if defined(WITH_JAVA_RUNTIME_LIBRARY_GNU_CLASSPATH)
1602
1603         LLNI_field_get_ref(rf,   f,     rvmf);
1604         LLNI_field_get_cls(rvmf, clazz, c);
1605         LLNI_field_get_val(rvmf, slot , slot);
1606
1607 #elif defined(WITH_JAVA_RUNTIME_LIBRARY_OPENJDK)
1608
1609         LLNI_field_get_cls(rf, clazz, c);
1610         LLNI_field_get_val(rf, slot , slot);
1611
1612 #else
1613 # error unknown configuration
1614 #endif
1615
1616         f = &(c->fields[slot]);
1617
1618         return (jfieldID) f;
1619 #else
1620         vm_abort("jni_FromReflectedField: Not implemented in this configuration.");
1621
1622         /* Keep compiler happy. */
1623
1624         return NULL;
1625 #endif
1626 }
1627
1628
1629 /* ToReflectedMethod ***********************************************************
1630
1631    Converts a method ID derived from cls to an instance of the
1632    java.lang.reflect.Method class or to an instance of the
1633    java.lang.reflect.Constructor class.
1634
1635 *******************************************************************************/
1636
1637 jobject _Jv_JNI_ToReflectedMethod(JNIEnv* env, jclass cls, jmethodID methodID,
1638                                                                   jboolean isStatic)
1639 {
1640 #if defined(ENABLE_JAVASE)
1641         methodinfo                    *m;
1642         java_lang_reflect_Constructor *rc;
1643         java_lang_reflect_Method      *rm;
1644
1645         TRACEJNICALLS(("_Jv_JNI_ToReflectedMethod(env=%p, cls=%p, methodID=%p, isStatic=%d)", env, cls, methodID, isStatic));
1646
1647         m = (methodinfo *) methodID;
1648
1649         /* HotSpot does the same assert. */
1650
1651         assert(((m->flags & ACC_STATIC) != 0) == (isStatic != 0));
1652
1653         if (m->name == utf_init) {
1654                 rc = reflect_constructor_new(m);
1655
1656                 return (jobject) rc;
1657         }
1658         else {
1659                 rm = reflect_method_new(m);
1660
1661                 return (jobject) rm;
1662         }
1663 #else
1664         vm_abort("_Jv_JNI_ToReflectedMethod: not implemented in this configuration");
1665
1666         /* keep compiler happy */
1667
1668         return NULL;
1669 #endif
1670 }
1671
1672
1673 /* ToReflectedField ************************************************************
1674
1675    Converts a field ID derived from cls to an instance of the
1676    java.lang.reflect.Field class.
1677
1678 *******************************************************************************/
1679
1680 jobject _Jv_JNI_ToReflectedField(JNIEnv* env, jclass cls, jfieldID fieldID,
1681                                                                  jboolean isStatic)
1682 {
1683         STATISTICS(jniinvokation());
1684
1685         log_text("JNI-Call: ToReflectedField: IMPLEMENT ME!");
1686
1687         return NULL;
1688 }
1689
1690
1691 /* Calling Instance Methods ***************************************************/
1692
1693 /* GetMethodID *****************************************************************
1694
1695    Returns the method ID for an instance (nonstatic) method of a class
1696    or interface. The method may be defined in one of the clazz's
1697    superclasses and inherited by clazz. The method is determined by
1698    its name and signature.
1699
1700    GetMethodID() causes an uninitialized class to be initialized.
1701
1702 *******************************************************************************/
1703
1704 jmethodID _Jv_JNI_GetMethodID(JNIEnv* env, jclass clazz, const char *name,
1705                                                           const char *sig)
1706 {
1707         classinfo  *c;
1708         utf        *uname;
1709         utf        *udesc;
1710         methodinfo *m;
1711
1712         STATISTICS(jniinvokation());
1713
1714         c = LLNI_classinfo_unwrap(clazz);
1715
1716         if (c == NULL)
1717                 return NULL;
1718
1719         if (!(c->state & CLASS_INITIALIZED))
1720                 if (!initialize_class(c))
1721                         return NULL;
1722
1723         /* try to get the method of the class or one of it's superclasses */
1724
1725         uname = utf_new_char((char *) name);
1726         udesc = utf_new_char((char *) sig);
1727
1728         m = class_resolvemethod(c, uname, udesc);
1729
1730         if ((m == NULL) || (m->flags & ACC_STATIC)) {
1731                 exceptions_throw_nosuchmethoderror(c, uname, udesc);
1732
1733                 return NULL;
1734         }
1735
1736         return (jmethodID) m;
1737 }
1738
1739
1740 /* JNI-functions for calling instance methods *********************************/
1741
1742 #define JNI_CALL_VIRTUAL_METHOD(name, type, intern)         \
1743 type _Jv_JNI_Call##name##Method(JNIEnv *env, jobject obj,   \
1744                                                                 jmethodID methodID, ...)    \
1745 {                                                           \
1746         java_handle_t *o;                                       \
1747         methodinfo    *m;                                       \
1748         va_list        ap;                                      \
1749         type           ret;                                     \
1750                                                             \
1751         o = (java_handle_t *) obj;                              \
1752         m = (methodinfo *) methodID;                            \
1753                                                             \
1754         va_start(ap, methodID);                                 \
1755         ret = _Jv_jni_Call##intern##Method(o, LLNI_vftbl_direct(o), m, ap); \
1756         va_end(ap);                                             \
1757                                                             \
1758         return ret;                                             \
1759 }
1760
1761 JNI_CALL_VIRTUAL_METHOD(Boolean, jboolean, Int)
1762 JNI_CALL_VIRTUAL_METHOD(Byte,    jbyte,    Int)
1763 JNI_CALL_VIRTUAL_METHOD(Char,    jchar,    Int)
1764 JNI_CALL_VIRTUAL_METHOD(Short,   jshort,   Int)
1765 JNI_CALL_VIRTUAL_METHOD(Int,     jint,     Int)
1766 JNI_CALL_VIRTUAL_METHOD(Long,    jlong,    Long)
1767 JNI_CALL_VIRTUAL_METHOD(Float,   jfloat,   Float)
1768 JNI_CALL_VIRTUAL_METHOD(Double,  jdouble,  Double)
1769
1770
1771 #define JNI_CALL_VIRTUAL_METHOD_V(name, type, intern)              \
1772 type _Jv_JNI_Call##name##MethodV(JNIEnv *env, jobject obj,         \
1773                                                                  jmethodID methodID, va_list args) \
1774 {                                                                  \
1775         java_handle_t *o;                                              \
1776         methodinfo    *m;                                              \
1777         type           ret;                                            \
1778                                                                    \
1779         o = (java_handle_t *) obj;                                     \
1780         m = (methodinfo *) methodID;                                   \
1781                                                                    \
1782         ret = _Jv_jni_Call##intern##Method(o, LLNI_vftbl_direct(o), m, args);      \
1783                                                                    \
1784         return ret;                                                    \
1785 }
1786
1787 JNI_CALL_VIRTUAL_METHOD_V(Boolean, jboolean, Int)
1788 JNI_CALL_VIRTUAL_METHOD_V(Byte,    jbyte,    Int)
1789 JNI_CALL_VIRTUAL_METHOD_V(Char,    jchar,    Int)
1790 JNI_CALL_VIRTUAL_METHOD_V(Short,   jshort,   Int)
1791 JNI_CALL_VIRTUAL_METHOD_V(Int,     jint,     Int)
1792 JNI_CALL_VIRTUAL_METHOD_V(Long,    jlong,    Long)
1793 JNI_CALL_VIRTUAL_METHOD_V(Float,   jfloat,   Float)
1794 JNI_CALL_VIRTUAL_METHOD_V(Double,  jdouble,  Double)
1795
1796
1797 #define JNI_CALL_VIRTUAL_METHOD_A(name, type, intern)          \
1798 type _Jv_JNI_Call##name##MethodA(JNIEnv *env, jobject obj,     \
1799                                                                  jmethodID methodID,           \
1800                                                                  const jvalue *args)           \
1801 {                                                              \
1802         java_handle_t *o;                                          \
1803         methodinfo    *m;                                          \
1804         type           ret;                                        \
1805                                                                \
1806         o = (java_handle_t *) obj;                                 \
1807         m = (methodinfo *) methodID;                               \
1808                                                                \
1809         ret = _Jv_jni_Call##intern##MethodA(o, LLNI_vftbl_direct(o), m, args); \
1810                                                                \
1811         return ret;                                                \
1812 }
1813
1814 JNI_CALL_VIRTUAL_METHOD_A(Boolean, jboolean, Int)
1815 JNI_CALL_VIRTUAL_METHOD_A(Byte,    jbyte,    Int)
1816 JNI_CALL_VIRTUAL_METHOD_A(Char,    jchar,    Int)
1817 JNI_CALL_VIRTUAL_METHOD_A(Short,   jshort,   Int)
1818 JNI_CALL_VIRTUAL_METHOD_A(Int,     jint,     Int)
1819 JNI_CALL_VIRTUAL_METHOD_A(Long,    jlong,    Long)
1820 JNI_CALL_VIRTUAL_METHOD_A(Float,   jfloat,   Float)
1821 JNI_CALL_VIRTUAL_METHOD_A(Double,  jdouble,  Double)
1822
1823
1824 jobject _Jv_JNI_CallObjectMethod(JNIEnv *env, jobject obj, jmethodID methodID,
1825                                                                  ...)
1826 {
1827         java_handle_t *o;
1828         methodinfo    *m;
1829         java_handle_t *ret;
1830         va_list        ap;
1831
1832         o = (java_handle_t *) obj;
1833         m = (methodinfo *) methodID;
1834
1835         va_start(ap, methodID);
1836         ret = _Jv_jni_CallObjectMethod(o, LLNI_vftbl_direct(o), m, ap);
1837         va_end(ap);
1838
1839         return jni_NewLocalRef(env, (jobject) ret);
1840 }
1841
1842
1843 jobject _Jv_JNI_CallObjectMethodV(JNIEnv *env, jobject obj, jmethodID methodID,
1844                                                                   va_list args)
1845 {
1846         java_handle_t *o;
1847         methodinfo    *m;
1848         java_handle_t *ret;
1849
1850         o = (java_handle_t *) obj;
1851         m = (methodinfo *) methodID;
1852
1853         ret = _Jv_jni_CallObjectMethod(o, LLNI_vftbl_direct(o), m, args);
1854
1855         return jni_NewLocalRef(env, (jobject) ret);
1856 }
1857
1858
1859 jobject _Jv_JNI_CallObjectMethodA(JNIEnv *env, jobject obj, jmethodID methodID,
1860                                                                   const jvalue *args)
1861 {
1862         java_handle_t *o;
1863         methodinfo    *m;
1864         java_handle_t *ret;
1865
1866         o = (java_handle_t *) obj;
1867         m = (methodinfo *) methodID;
1868
1869         ret = _Jv_jni_CallObjectMethodA(o, LLNI_vftbl_direct(o), m, args);
1870
1871         return jni_NewLocalRef(env, (jobject) ret);
1872 }
1873
1874
1875
1876 void _Jv_JNI_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...)
1877 {
1878         java_handle_t *o;
1879         methodinfo    *m;
1880         va_list        ap;
1881
1882         o = (java_handle_t *) obj;
1883         m = (methodinfo *) methodID;
1884
1885         va_start(ap, methodID);
1886         _Jv_jni_CallVoidMethod(o, LLNI_vftbl_direct(o), m, ap);
1887         va_end(ap);
1888 }
1889
1890
1891 void _Jv_JNI_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID,
1892                                                          va_list args)
1893 {
1894         java_handle_t *o;
1895         methodinfo    *m;
1896
1897         o = (java_handle_t *) obj;
1898         m = (methodinfo *) methodID;
1899
1900         _Jv_jni_CallVoidMethod(o, LLNI_vftbl_direct(o), m, args);
1901 }
1902
1903
1904 void _Jv_JNI_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID,
1905                                                          const jvalue *args)
1906 {
1907         java_handle_t *o;
1908         methodinfo    *m;
1909
1910         o = (java_handle_t *) obj;
1911         m = (methodinfo *) methodID;
1912
1913         _Jv_jni_CallVoidMethodA(o, LLNI_vftbl_direct(o), m, args);
1914 }
1915
1916
1917
1918 #define JNI_CALL_NONVIRTUAL_METHOD(name, type, intern)                      \
1919 type _Jv_JNI_CallNonvirtual##name##Method(JNIEnv *env, jobject obj,         \
1920                                                                                   jclass clazz, jmethodID methodID, \
1921                                                                                   ...)                              \
1922 {                                                                           \
1923         java_handle_t *o;                                                       \
1924         classinfo     *c;                                                       \
1925         methodinfo    *m;                                                       \
1926         va_list        ap;                                                      \
1927         type           ret;                                                     \
1928                                                                             \
1929         o = (java_handle_t *) obj;                                              \
1930         c = LLNI_classinfo_unwrap(clazz);                                       \
1931         m = (methodinfo *) methodID;                                            \
1932                                                                             \
1933         va_start(ap, methodID);                                                 \
1934         ret = _Jv_jni_Call##intern##Method(o, c->vftbl, m, ap);                 \
1935         va_end(ap);                                                             \
1936                                                                             \
1937         return ret;                                                             \
1938 }
1939
1940 JNI_CALL_NONVIRTUAL_METHOD(Boolean, jboolean, Int)
1941 JNI_CALL_NONVIRTUAL_METHOD(Byte,    jbyte,    Int)
1942 JNI_CALL_NONVIRTUAL_METHOD(Char,    jchar,    Int)
1943 JNI_CALL_NONVIRTUAL_METHOD(Short,   jshort,   Int)
1944 JNI_CALL_NONVIRTUAL_METHOD(Int,     jint,     Int)
1945 JNI_CALL_NONVIRTUAL_METHOD(Long,    jlong,    Long)
1946 JNI_CALL_NONVIRTUAL_METHOD(Float,   jfloat,   Float)
1947 JNI_CALL_NONVIRTUAL_METHOD(Double,  jdouble,  Double)
1948
1949
1950 #define JNI_CALL_NONVIRTUAL_METHOD_V(name, type, intern)                     \
1951 type _Jv_JNI_CallNonvirtual##name##MethodV(JNIEnv *env, jobject obj,         \
1952                                                                                    jclass clazz, jmethodID methodID, \
1953                                                                                    va_list args)                     \
1954 {                                                                            \
1955         java_handle_t *o;                                                        \
1956         classinfo     *c;                                                        \
1957         methodinfo    *m;                                                        \
1958         type           ret;                                                      \
1959                                                                              \
1960         o = (java_handle_t *) obj;                                               \
1961         c = LLNI_classinfo_unwrap(clazz);                                        \
1962         m = (methodinfo *) methodID;                                             \
1963                                                                              \
1964         ret = _Jv_jni_CallIntMethod(o, c->vftbl, m, args);                       \
1965                                                                              \
1966         return ret;                                                              \
1967 }
1968
1969 JNI_CALL_NONVIRTUAL_METHOD_V(Boolean, jboolean, Int)
1970 JNI_CALL_NONVIRTUAL_METHOD_V(Byte,    jbyte,    Int)
1971 JNI_CALL_NONVIRTUAL_METHOD_V(Char,    jchar,    Int)
1972 JNI_CALL_NONVIRTUAL_METHOD_V(Short,   jshort,   Int)
1973 JNI_CALL_NONVIRTUAL_METHOD_V(Int,     jint,     Int)
1974 JNI_CALL_NONVIRTUAL_METHOD_V(Long,    jlong,    Long)
1975 JNI_CALL_NONVIRTUAL_METHOD_V(Float,   jfloat,   Float)
1976 JNI_CALL_NONVIRTUAL_METHOD_V(Double,  jdouble,  Double)
1977
1978
1979 #define JNI_CALL_NONVIRTUAL_METHOD_A(name, type, intern)                     \
1980 type _Jv_JNI_CallNonvirtual##name##MethodA(JNIEnv *env, jobject obj,         \
1981                                                                                    jclass clazz, jmethodID methodID, \
1982                                                                                    const jvalue *args)               \
1983 {                                                                            \
1984         log_text("JNI-Call: CallNonvirtual##name##MethodA: IMPLEMENT ME!");      \
1985                                                                              \
1986         return 0;                                                                \
1987 }
1988
1989 JNI_CALL_NONVIRTUAL_METHOD_A(Boolean, jboolean, Int)
1990 JNI_CALL_NONVIRTUAL_METHOD_A(Byte,    jbyte,    Int)
1991 JNI_CALL_NONVIRTUAL_METHOD_A(Char,    jchar,    Int)
1992 JNI_CALL_NONVIRTUAL_METHOD_A(Short,   jshort,   Int)
1993 JNI_CALL_NONVIRTUAL_METHOD_A(Int,     jint,     Int)
1994 JNI_CALL_NONVIRTUAL_METHOD_A(Long,    jlong,    Long)
1995 JNI_CALL_NONVIRTUAL_METHOD_A(Float,   jfloat,   Float)
1996 JNI_CALL_NONVIRTUAL_METHOD_A(Double,  jdouble,  Double)
1997
1998 jobject _Jv_JNI_CallNonvirtualObjectMethod(JNIEnv *env, jobject obj,
1999                                                                                    jclass clazz, jmethodID methodID,
2000                                                                                    ...)
2001 {
2002         java_handle_t *o;
2003         classinfo     *c;
2004         methodinfo    *m;
2005         java_handle_t *r;
2006         va_list        ap;
2007
2008         o = (java_handle_t *) obj;
2009         c = LLNI_classinfo_unwrap(clazz);
2010         m = (methodinfo *) methodID;
2011
2012         va_start(ap, methodID);
2013         r = _Jv_jni_CallObjectMethod(o, c->vftbl, m, ap);
2014         va_end(ap);
2015
2016         return jni_NewLocalRef(env, (jobject) r);
2017 }
2018
2019
2020 jobject _Jv_JNI_CallNonvirtualObjectMethodV(JNIEnv *env, jobject obj,
2021                                                                                         jclass clazz, jmethodID methodID,
2022                                                                                         va_list args)
2023 {
2024         java_handle_t *o;
2025         classinfo     *c;
2026         methodinfo    *m;
2027         java_handle_t *r;
2028
2029         o = (java_handle_t *) obj;
2030         c = LLNI_classinfo_unwrap(clazz);
2031         m = (methodinfo *) methodID;
2032
2033         r = _Jv_jni_CallObjectMethod(o, c->vftbl, m, args);
2034
2035         return jni_NewLocalRef(env, (jobject) r);
2036 }
2037
2038
2039 jobject _Jv_JNI_CallNonvirtualObjectMethodA(JNIEnv *env, jobject obj,
2040                                                                                         jclass clazz, jmethodID methodID,
2041                                                                                         const jvalue *args)
2042 {
2043         log_text("JNI-Call: CallNonvirtualObjectMethodA: IMPLEMENT ME!");
2044
2045         return jni_NewLocalRef(env, NULL);
2046 }
2047
2048
2049 void _Jv_JNI_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass clazz,
2050                                                                           jmethodID methodID, ...)
2051 {
2052         java_handle_t *o;
2053         classinfo     *c;
2054         methodinfo    *m;
2055         va_list        ap;
2056
2057         o = (java_handle_t *) obj;
2058         c = LLNI_classinfo_unwrap(clazz);
2059         m = (methodinfo *) methodID;
2060
2061         va_start(ap, methodID);
2062         _Jv_jni_CallVoidMethod(o, c->vftbl, m, ap);
2063         va_end(ap);
2064 }
2065
2066
2067 void _Jv_JNI_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass clazz,
2068                                                                            jmethodID methodID, va_list args)
2069 {
2070         java_handle_t *o;
2071         classinfo     *c;
2072         methodinfo    *m;
2073
2074         o = (java_handle_t *) obj;
2075         c = LLNI_classinfo_unwrap(clazz);
2076         m = (methodinfo *) methodID;
2077
2078         _Jv_jni_CallVoidMethod(o, c->vftbl, m, args);
2079 }
2080
2081
2082 void _Jv_JNI_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass clazz,
2083                                                                            jmethodID methodID, const jvalue * args)
2084 {
2085         java_handle_t *o;
2086         classinfo     *c;
2087         methodinfo    *m;
2088
2089         o = (java_handle_t *) obj;
2090         c = LLNI_classinfo_unwrap(clazz);
2091         m = (methodinfo *) methodID;
2092
2093         _Jv_jni_CallVoidMethodA(o, c->vftbl, m, args);
2094 }
2095
2096
2097 /* Accessing Fields of Objects ************************************************/
2098
2099 /* GetFieldID ******************************************************************
2100
2101    Returns the field ID for an instance (nonstatic) field of a
2102    class. The field is specified by its name and signature. The
2103    Get<type>Field and Set<type>Field families of accessor functions
2104    use field IDs to retrieve object fields.
2105
2106 *******************************************************************************/
2107
2108 jfieldID _Jv_JNI_GetFieldID(JNIEnv *env, jclass clazz, const char *name,
2109                                                         const char *sig)
2110 {
2111         classinfo *c;
2112         fieldinfo *f;
2113         utf       *uname;
2114         utf       *udesc;
2115
2116         STATISTICS(jniinvokation());
2117
2118         c = LLNI_classinfo_unwrap(clazz);
2119
2120         /* XXX NPE check? */
2121
2122         uname = utf_new_char((char *) name);
2123         udesc = utf_new_char((char *) sig);
2124
2125         f = class_findfield(c, uname, udesc);
2126
2127         if (f == NULL)
2128                 exceptions_throw_nosuchfielderror(c, uname);
2129
2130         return (jfieldID) f;
2131 }
2132
2133
2134 /* Get<type>Field Routines *****************************************************
2135
2136    This family of accessor routines returns the value of an instance
2137    (nonstatic) field of an object. The field to access is specified by
2138    a field ID obtained by calling GetFieldID().
2139
2140 *******************************************************************************/
2141
2142 #define GET_FIELD(o,type,f) \
2143     *((type *) (((intptr_t) (o)) + ((intptr_t) ((fieldinfo *) (f))->offset)))
2144
2145 #define JNI_GET_FIELD(name, type, intern)                                 \
2146 type _Jv_JNI_Get##name##Field(JNIEnv *env, jobject obj, jfieldID fieldID) \
2147 {                                                                         \
2148         intern ret;                                                           \
2149                                                                           \
2150         TRACEJNICALLS(("_Jv_JNI_Get" STR(name) "Field(env=%p, obj=%p, fieldId=%p)", env, obj, fieldID)); \
2151                                                                           \
2152         LLNI_CRITICAL_START;                                                  \
2153                                                                           \
2154         ret = GET_FIELD(LLNI_DIRECT((java_handle_t *) obj), intern, fieldID); \
2155                                                                           \
2156         LLNI_CRITICAL_END;                                                    \
2157                                                                           \
2158         return (type) ret;                                                    \
2159 }
2160
2161 JNI_GET_FIELD(Boolean, jboolean, s4)
2162 JNI_GET_FIELD(Byte,    jbyte,    s4)
2163 JNI_GET_FIELD(Char,    jchar,    s4)
2164 JNI_GET_FIELD(Short,   jshort,   s4)
2165 JNI_GET_FIELD(Int,     jint,     s4)
2166 JNI_GET_FIELD(Long,    jlong,    s8)
2167 JNI_GET_FIELD(Float,   jfloat,   float)
2168 JNI_GET_FIELD(Double,  jdouble,  double)
2169
2170
2171 jobject _Jv_JNI_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID)
2172 {
2173         java_handle_t *o;
2174
2175         TRACEJNICALLS(("_Jv_JNI_GetObjectField(env=%p, obj=%p, fieldId=%p)", env, obj, fieldID));
2176
2177         LLNI_CRITICAL_START;
2178
2179         o = LLNI_WRAP(GET_FIELD(LLNI_DIRECT((java_handle_t *) obj), java_object_t*, fieldID));
2180
2181         LLNI_CRITICAL_END;
2182
2183         return jni_NewLocalRef(env, (jobject) o);
2184 }
2185
2186
2187 /* Set<type>Field Routines *****************************************************
2188
2189    This family of accessor routines sets the value of an instance
2190    (nonstatic) field of an object. The field to access is specified by
2191    a field ID obtained by calling GetFieldID().
2192
2193 *******************************************************************************/
2194
2195 #define SET_FIELD(o,type,f,value) \
2196     *((type *) (((intptr_t) (o)) + ((intptr_t) ((fieldinfo *) (f))->offset))) = (type) (value)
2197
2198 #define JNI_SET_FIELD(name, type, intern)                                  \
2199 void _Jv_JNI_Set##name##Field(JNIEnv *env, jobject obj, jfieldID fieldID,  \
2200                                                           type value)                                  \
2201 {                                                                          \
2202         TRACEJNICALLS(("_Jv_JNI_Set" STR(name) "Field(env=%p, obj=%p, fieldId=%p, value=%p)", env, obj, fieldID, value)); \
2203                                                                            \
2204         LLNI_CRITICAL_START;                                                   \
2205                                                                            \
2206         SET_FIELD(LLNI_DIRECT((java_handle_t *) obj), intern, fieldID, value); \
2207                                                                                \
2208         LLNI_CRITICAL_START;                                                   \
2209 }
2210
2211 JNI_SET_FIELD(Boolean, jboolean, s4)
2212 JNI_SET_FIELD(Byte,    jbyte,    s4)
2213 JNI_SET_FIELD(Char,    jchar,    s4)
2214 JNI_SET_FIELD(Short,   jshort,   s4)
2215 JNI_SET_FIELD(Int,     jint,     s4)
2216 JNI_SET_FIELD(Long,    jlong,    s8)
2217 JNI_SET_FIELD(Float,   jfloat,   float)
2218 JNI_SET_FIELD(Double,  jdouble,  double)
2219
2220
2221 void _Jv_JNI_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID,
2222                                                         jobject value)
2223 {
2224         TRACEJNICALLS(("_Jv_JNI_SetObjectField(env=%p, obj=%p, fieldId=%p, value=%p)", env, obj, fieldID, value));
2225
2226         LLNI_CRITICAL_START;
2227
2228         SET_FIELD(obj, java_handle_t*, fieldID, LLNI_UNWRAP((java_handle_t*) value));
2229
2230         LLNI_CRITICAL_END;
2231 }
2232
2233
2234 /* Calling Static Methods *****************************************************/
2235
2236 /* GetStaticMethodID ***********************************************************
2237
2238    Returns the method ID for a static method of a class. The method is
2239    specified by its name and signature.
2240
2241    GetStaticMethodID() causes an uninitialized class to be
2242    initialized.
2243
2244 *******************************************************************************/
2245
2246 jmethodID _Jv_JNI_GetStaticMethodID(JNIEnv *env, jclass clazz, const char *name,
2247                                                                         const char *sig)
2248 {
2249         classinfo  *c;
2250         utf        *uname;
2251         utf        *udesc;
2252         methodinfo *m;
2253
2254         TRACEJNICALLS(("_Jv_JNI_GetStaticMethodID(env=%p, clazz=%p, name=%s, sig=%s)", env, clazz, name, sig));
2255
2256         c = LLNI_classinfo_unwrap(clazz);
2257
2258         if (c == NULL)
2259                 return NULL;
2260
2261         if (!(c->state & CLASS_INITIALIZED))
2262                 if (!initialize_class(c))
2263                         return NULL;
2264
2265         /* try to get the static method of the class */
2266
2267         uname = utf_new_char((char *) name);
2268         udesc = utf_new_char((char *) sig);
2269
2270         m = class_resolvemethod(c, uname, udesc);
2271
2272         if ((m == NULL) || !(m->flags & ACC_STATIC)) {
2273                 exceptions_throw_nosuchmethoderror(c, uname, udesc);
2274
2275                 return NULL;
2276         }
2277
2278         return (jmethodID) m;
2279 }
2280
2281
2282 #define JNI_CALL_STATIC_METHOD(name, type, intern)               \
2283 type _Jv_JNI_CallStatic##name##Method(JNIEnv *env, jclass clazz, \
2284                                                                           jmethodID methodID, ...)   \
2285 {                                                                \
2286         methodinfo *m;                                               \
2287         va_list     ap;                                              \
2288         type        res;                                             \
2289                                                                  \
2290         m = (methodinfo *) methodID;                                 \
2291                                                                  \
2292         va_start(ap, methodID);                                      \
2293         res = _Jv_jni_Call##intern##Method(NULL, NULL, m, ap);       \
2294         va_end(ap);                                                  \
2295                                                                  \
2296         return res;                                                  \
2297 }
2298
2299 JNI_CALL_STATIC_METHOD(Boolean, jboolean, Int)
2300 JNI_CALL_STATIC_METHOD(Byte,    jbyte,    Int)
2301 JNI_CALL_STATIC_METHOD(Char,    jchar,    Int)
2302 JNI_CALL_STATIC_METHOD(Short,   jshort,   Int)
2303 JNI_CALL_STATIC_METHOD(Int,     jint,     Int)
2304 JNI_CALL_STATIC_METHOD(Long,    jlong,    Long)
2305 JNI_CALL_STATIC_METHOD(Float,   jfloat,   Float)
2306 JNI_CALL_STATIC_METHOD(Double,  jdouble,  Double)
2307
2308
2309 #define JNI_CALL_STATIC_METHOD_V(name, type, intern)                     \
2310 type _Jv_JNI_CallStatic##name##MethodV(JNIEnv *env, jclass clazz,        \
2311                                                                            jmethodID methodID, va_list args) \
2312 {                                                                        \
2313         methodinfo *m;                                                       \
2314         type        res;                                                     \
2315                                                                          \
2316         m = (methodinfo *) methodID;                                         \
2317                                                                          \
2318         res = _Jv_jni_Call##intern##Method(NULL, NULL, m, args);             \
2319                                                                          \
2320         return res;                                                          \
2321 }
2322
2323 JNI_CALL_STATIC_METHOD_V(Boolean, jboolean, Int)
2324 JNI_CALL_STATIC_METHOD_V(Byte,    jbyte,    Int)
2325 JNI_CALL_STATIC_METHOD_V(Char,    jchar,    Int)
2326 JNI_CALL_STATIC_METHOD_V(Short,   jshort,   Int)
2327 JNI_CALL_STATIC_METHOD_V(Int,     jint,     Int)
2328 JNI_CALL_STATIC_METHOD_V(Long,    jlong,    Long)
2329 JNI_CALL_STATIC_METHOD_V(Float,   jfloat,   Float)
2330 JNI_CALL_STATIC_METHOD_V(Double,  jdouble,  Double)
2331
2332
2333 #define JNI_CALL_STATIC_METHOD_A(name, type, intern)                           \
2334 type _Jv_JNI_CallStatic##name##MethodA(JNIEnv *env, jclass clazz,              \
2335                                                                            jmethodID methodID, const jvalue *args) \
2336 {                                                                              \
2337         methodinfo *m;                                                             \
2338         type        res;                                                           \
2339                                                                                \
2340         m = (methodinfo *) methodID;                                               \
2341                                                                                \
2342         res = _Jv_jni_Call##intern##MethodA(NULL, NULL, m, args);                  \
2343                                                                                \
2344         return res;                                                                \
2345 }
2346
2347 JNI_CALL_STATIC_METHOD_A(Boolean, jboolean, Int)
2348 JNI_CALL_STATIC_METHOD_A(Byte,    jbyte,    Int)
2349 JNI_CALL_STATIC_METHOD_A(Char,    jchar,    Int)
2350 JNI_CALL_STATIC_METHOD_A(Short,   jshort,   Int)
2351 JNI_CALL_STATIC_METHOD_A(Int,     jint,     Int)
2352 JNI_CALL_STATIC_METHOD_A(Long,    jlong,    Long)
2353 JNI_CALL_STATIC_METHOD_A(Float,   jfloat,   Float)
2354 JNI_CALL_STATIC_METHOD_A(Double,  jdouble,  Double)
2355
2356
2357 jobject _Jv_JNI_CallStaticObjectMethod(JNIEnv *env, jclass clazz,
2358                                                                            jmethodID methodID, ...)
2359 {
2360         methodinfo    *m;
2361         java_handle_t *o;
2362         va_list        ap;
2363
2364         TRACEJNICALLS(("_Jv_JNI_CallStaticObjectMethod(env=%p, clazz=%p, methodID=%p, ...)", env, clazz, methodID));
2365
2366         m = (methodinfo *) methodID;
2367
2368         va_start(ap, methodID);
2369         o = _Jv_jni_CallObjectMethod(NULL, NULL, m, ap);
2370         va_end(ap);
2371
2372         return jni_NewLocalRef(env, (jobject) o);
2373 }
2374
2375
2376 jobject _Jv_JNI_CallStaticObjectMethodV(JNIEnv *env, jclass clazz,
2377                                                                                 jmethodID methodID, va_list args)
2378 {
2379         methodinfo    *m;
2380         java_handle_t *o;
2381
2382         TRACEJNICALLS(("_Jv_JNI_CallStaticObjectMethodV(env=%p, clazz=%p, methodID=%p, args=%p)", env, clazz, methodID, args));
2383
2384         m = (methodinfo *) methodID;
2385
2386         o = _Jv_jni_CallObjectMethod(NULL, NULL, m, args);
2387
2388         return jni_NewLocalRef(env, (jobject) o);
2389 }
2390
2391
2392 jobject _Jv_JNI_CallStaticObjectMethodA(JNIEnv *env, jclass clazz,
2393                                                                                 jmethodID methodID, const jvalue *args)
2394 {
2395         methodinfo    *m;
2396         java_handle_t *o;
2397
2398         TRACEJNICALLS(("_Jv_JNI_CallStaticObjectMethodA(env=%p, clazz=%p, methodID=%p, args=%p)", env, clazz, methodID, args));
2399
2400         m = (methodinfo *) methodID;
2401
2402         o = _Jv_jni_CallObjectMethodA(NULL, NULL, m, args);
2403
2404         return jni_NewLocalRef(env, (jobject) o);
2405 }
2406
2407
2408 void _Jv_JNI_CallStaticVoidMethod(JNIEnv *env, jclass clazz,
2409                                                                   jmethodID methodID, ...)
2410 {
2411         methodinfo *m;
2412         va_list     ap;
2413
2414         TRACEJNICALLS(("_Jv_JNI_CallStaticVoidMethod(env=%p, clazz=%p, methodID=%p, ...)", env, clazz, methodID));
2415
2416         m = (methodinfo *) methodID;
2417
2418         va_start(ap, methodID);
2419         _Jv_jni_CallVoidMethod(NULL, NULL, m, ap);
2420         va_end(ap);
2421 }
2422
2423
2424 void _Jv_JNI_CallStaticVoidMethodV(JNIEnv *env, jclass clazz,
2425                                                                    jmethodID methodID, va_list args)
2426 {
2427         methodinfo *m;
2428
2429         TRACEJNICALLS(("_Jv_JNI_CallStaticVoidMethodV(env=%p, clazz=%p, methodID=%p, args=%p)", env, clazz, methodID, args));
2430
2431         m = (methodinfo *) methodID;
2432
2433         _Jv_jni_CallVoidMethod(NULL, NULL, m, args);
2434 }
2435
2436
2437 void _Jv_JNI_CallStaticVoidMethodA(JNIEnv *env, jclass clazz,
2438                                                                    jmethodID methodID, const jvalue * args)
2439 {
2440         methodinfo *m;
2441
2442         TRACEJNICALLS(("_Jv_JNI_CallStaticVoidMethodA(env=%p, clazz=%p, methodID=%p, args=%p)", env, clazz, methodID, args));
2443
2444         m = (methodinfo *) methodID;
2445
2446         _Jv_jni_CallVoidMethodA(NULL, NULL, m, args);
2447 }
2448
2449
2450 /* Accessing Static Fields ****************************************************/
2451
2452 /* GetStaticFieldID ************************************************************
2453
2454    Returns the field ID for a static field of a class. The field is
2455    specified by its name and signature. The GetStatic<type>Field and
2456    SetStatic<type>Field families of accessor functions use field IDs
2457    to retrieve static fields.
2458
2459 *******************************************************************************/
2460
2461 jfieldID _Jv_JNI_GetStaticFieldID(JNIEnv *env, jclass clazz, const char *name,
2462                                                                   const char *sig)
2463 {
2464         classinfo *c;
2465         fieldinfo *f;
2466         utf       *uname;
2467         utf       *usig;
2468
2469         STATISTICS(jniinvokation());
2470
2471         c = LLNI_classinfo_unwrap(clazz);
2472
2473         uname = utf_new_char((char *) name);
2474         usig  = utf_new_char((char *) sig);
2475
2476         f = class_findfield(c, uname, usig);
2477
2478         if (f == NULL)
2479                 exceptions_throw_nosuchfielderror(c, uname);
2480
2481         return (jfieldID) f;
2482 }
2483
2484
2485 /* GetStatic<type>Field ********************************************************
2486
2487    This family of accessor routines returns the value of a static
2488    field of an object.
2489
2490 *******************************************************************************/
2491
2492 #define JNI_GET_STATIC_FIELD(name, type, field)                \
2493 type _Jv_JNI_GetStatic##name##Field(JNIEnv *env, jclass clazz, \
2494                                                                         jfieldID fieldID)          \
2495 {                                                              \
2496         classinfo *c;                                              \
2497         fieldinfo *f;                                              \
2498                                                                \
2499         STATISTICS(jniinvokation());                               \
2500                                                                \
2501         c = LLNI_classinfo_unwrap(clazz);                          \
2502         f = (fieldinfo *) fieldID;                                 \
2503                                                                \
2504         if (!(c->state & CLASS_INITIALIZED))                       \
2505                 if (!initialize_class(c))                              \
2506                         return 0;                                          \
2507                                                                \
2508         return f->value->field;                                    \
2509 }
2510
2511 JNI_GET_STATIC_FIELD(Boolean, jboolean, i)
2512 JNI_GET_STATIC_FIELD(Byte,    jbyte,    i)
2513 JNI_GET_STATIC_FIELD(Char,    jchar,    i)
2514 JNI_GET_STATIC_FIELD(Short,   jshort,   i)
2515 JNI_GET_STATIC_FIELD(Int,     jint,     i)
2516 JNI_GET_STATIC_FIELD(Long,    jlong,    l)
2517 JNI_GET_STATIC_FIELD(Float,   jfloat,   f)
2518 JNI_GET_STATIC_FIELD(Double,  jdouble,  d)
2519
2520
2521 jobject _Jv_JNI_GetStaticObjectField(JNIEnv *env, jclass clazz,
2522                                                                          jfieldID fieldID)
2523 {
2524         classinfo     *c;
2525         fieldinfo     *f;
2526         java_handle_t *h;
2527
2528         STATISTICS(jniinvokation());
2529
2530         c = LLNI_classinfo_unwrap(clazz);
2531         f = (fieldinfo *) fieldID;
2532
2533         if (!(c->state & CLASS_INITIALIZED))
2534                 if (!initialize_class(c))
2535                         return NULL;
2536
2537         h = (java_handle_t*) LLNI_WRAP(f->value->a);
2538
2539         return jni_NewLocalRef(env, (jobject) h);
2540 }
2541
2542
2543 /*  SetStatic<type>Field *******************************************************
2544
2545         This family of accessor routines sets the value of a static field
2546         of an object.
2547
2548 *******************************************************************************/
2549
2550 #define JNI_SET_STATIC_FIELD(name, type, field)                \
2551 void _Jv_JNI_SetStatic##name##Field(JNIEnv *env, jclass clazz, \
2552                                                                         jfieldID fieldID,          \
2553                                                                         type value)                \
2554 {                                                              \
2555         classinfo *c;                                              \
2556         fieldinfo *f;                                              \
2557                                                                \
2558         STATISTICS(jniinvokation());                               \
2559                                                                \
2560         c = LLNI_classinfo_unwrap(clazz);                          \
2561         f = (fieldinfo *) fieldID;                                 \
2562                                                                \
2563         if (!(c->state & CLASS_INITIALIZED))                       \
2564                 if (!initialize_class(c))                              \
2565                         return;                                            \
2566                                                                \
2567         f->value->field = value;                                   \
2568 }
2569
2570 JNI_SET_STATIC_FIELD(Boolean, jboolean, i)
2571 JNI_SET_STATIC_FIELD(Byte,    jbyte,    i)
2572 JNI_SET_STATIC_FIELD(Char,    jchar,    i)
2573 JNI_SET_STATIC_FIELD(Short,   jshort,   i)
2574 JNI_SET_STATIC_FIELD(Int,     jint,     i)
2575 JNI_SET_STATIC_FIELD(Long,    jlong,    l)
2576 JNI_SET_STATIC_FIELD(Float,   jfloat,   f)
2577 JNI_SET_STATIC_FIELD(Double,  jdouble,  d)
2578
2579
2580 void _Jv_JNI_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID,
2581                                                                   jobject value)
2582 {
2583         classinfo *c;
2584         fieldinfo *f;
2585
2586         STATISTICS(jniinvokation());
2587
2588         c = LLNI_classinfo_unwrap(clazz);
2589         f = (fieldinfo *) fieldID;
2590
2591         if (!(c->state & CLASS_INITIALIZED))
2592                 if (!initialize_class(c))
2593                         return;
2594
2595         f->value->a = LLNI_UNWRAP((java_handle_t *) value);
2596 }
2597
2598
2599 /* String Operations **********************************************************/
2600
2601 /* NewString *******************************************************************
2602
2603    Create new java.lang.String object from an array of Unicode
2604    characters.
2605
2606 *******************************************************************************/
2607
2608 jstring _Jv_JNI_NewString(JNIEnv *env, const jchar *buf, jsize len)
2609 {
2610         java_lang_String        *s;
2611         java_handle_chararray_t *a;
2612         int32_t                  i;
2613
2614         STATISTICS(jniinvokation());
2615
2616         s = (java_lang_String *) builtin_new(class_java_lang_String);
2617         a = builtin_newarray_char(len);
2618
2619         /* javastring or characterarray could not be created */
2620         if ((a == NULL) || (s == NULL))
2621                 return NULL;
2622
2623         /* copy text */
2624         for (i = 0; i < len; i++)
2625                 LLNI_array_direct(a, i) = buf[i];
2626
2627         LLNI_field_set_ref(s, value , a);
2628         LLNI_field_set_val(s, offset, 0);
2629         LLNI_field_set_val(s, count , len);
2630
2631         return (jstring) jni_NewLocalRef(env, (jobject) s);
2632 }
2633
2634
2635 static jchar emptyStringJ[]={0,0};
2636
2637 /* GetStringLength *************************************************************
2638
2639    Returns the length (the count of Unicode characters) of a Java
2640    string.
2641
2642 *******************************************************************************/
2643
2644 jsize _Jv_JNI_GetStringLength(JNIEnv *env, jstring str)
2645 {
2646         java_lang_String *s;
2647         jsize             len;
2648
2649         TRACEJNICALLS(("_Jv_JNI_GetStringLength(env=%p, str=%p)", env, str));
2650
2651         s = (java_lang_String *) str;
2652
2653         LLNI_field_get_val(s, count, len);
2654
2655         return len;
2656 }
2657
2658
2659 /* GetStringChars **************************************************************
2660
2661    Returns a pointer to the array of Unicode characters of the
2662    string. This pointer is valid until ReleaseStringChars() is called.
2663
2664 *******************************************************************************/
2665
2666 const jchar* jni_GetStringChars(JNIEnv *env, jstring str, jboolean *isCopy)
2667 {
2668         java_lang_String        *s;
2669         java_handle_chararray_t *a;
2670         u2                      *stringbuffer;
2671         int32_t                  count;
2672         int32_t                  offset;
2673         int32_t                  i;
2674
2675         TRACEJNICALLS(("jni_GetStringChars(env=%p, str=%p, isCopy=%p)", env, str, isCopy));
2676
2677         if (str == NULL)
2678                 // FIXME This is really ugly.
2679                 return emptyStringJ;
2680
2681         s = (java_lang_String *) str;
2682
2683         LLNI_field_get_ref(s, value, a);
2684
2685         if (a == NULL)
2686                 return NULL;
2687
2688         LLNI_field_get_val(s, count, count);
2689         LLNI_field_get_val(s, offset, offset);
2690
2691         /* allocate memory */
2692
2693         stringbuffer = MNEW(u2, count + 1);
2694
2695         /* copy text */
2696
2697         for (i = 0; i < count; i++)
2698                 stringbuffer[i] = LLNI_array_direct(a, offset + i);
2699
2700         /* terminate string */
2701
2702         stringbuffer[i] = '\0';
2703
2704         if (isCopy)
2705                 *isCopy = JNI_TRUE;
2706
2707         return (jchar*) stringbuffer;
2708 }
2709
2710
2711 /* ReleaseStringChars **********************************************************
2712
2713    Informs the VM that the native code no longer needs access to
2714    chars. The chars argument is a pointer obtained from string using
2715    GetStringChars().
2716
2717 *******************************************************************************/
2718
2719 void _Jv_JNI_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars)
2720 {
2721         java_lang_String *s;
2722
2723         STATISTICS(jniinvokation());
2724
2725         if (chars == emptyStringJ)
2726                 return;
2727
2728         s = (java_lang_String *) str;
2729
2730         MFREE(((jchar *) chars), jchar, LLNI_field_direct(s, count) + 1);
2731 }
2732
2733
2734 /* NewStringUTF ****************************************************************
2735
2736    Constructs a new java.lang.String object from an array of UTF-8
2737    characters.
2738
2739 *******************************************************************************/
2740
2741 jstring _Jv_JNI_NewStringUTF(JNIEnv *env, const char *bytes)
2742 {
2743         java_lang_String *s;
2744
2745         TRACEJNICALLS(("_Jv_JNI_NewStringUTF(env=%p, bytes=%s)", env, bytes));
2746
2747         s = (java_lang_String *) javastring_safe_new_from_utf8(bytes);
2748
2749     return (jstring) jni_NewLocalRef(env, (jobject) s);
2750 }
2751
2752
2753 /****************** returns the utf8 length in bytes of a string *******************/
2754
2755 jsize _Jv_JNI_GetStringUTFLength(JNIEnv *env, jstring string)
2756 {
2757         java_lang_String *s;
2758         s4                length;
2759
2760         TRACEJNICALLS(("_Jv_JNI_GetStringUTFLength(env=%p, string=%p)", env, string));
2761
2762         s = (java_lang_String *) string;
2763
2764         length = u2_utflength(LLNI_field_direct(s, value)->data, LLNI_field_direct(s, count));
2765
2766         return length;
2767 }
2768
2769
2770 /* GetStringUTFChars ***********************************************************
2771
2772    Returns a pointer to an array of UTF-8 characters of the
2773    string. This array is valid until it is released by
2774    ReleaseStringUTFChars().
2775
2776 *******************************************************************************/
2777
2778 const char *_Jv_JNI_GetStringUTFChars(JNIEnv *env, jstring string,
2779                                                                           jboolean *isCopy)
2780 {
2781         utf *u;
2782
2783         STATISTICS(jniinvokation());
2784
2785         if (string == NULL)
2786                 return "";
2787
2788         if (isCopy)
2789                 *isCopy = JNI_TRUE;
2790
2791         u = javastring_toutf((java_handle_t *) string, false);
2792
2793         if (u != NULL)
2794                 return u->text;
2795
2796         return "";
2797 }
2798
2799
2800 /* ReleaseStringUTFChars *******************************************************
2801
2802    Informs the VM that the native code no longer needs access to
2803    utf. The utf argument is a pointer derived from string using
2804    GetStringUTFChars().
2805
2806 *******************************************************************************/
2807
2808 void _Jv_JNI_ReleaseStringUTFChars(JNIEnv *env, jstring string, const char *utf)
2809 {
2810         STATISTICS(jniinvokation());
2811
2812     /* XXX we don't release utf chars right now, perhaps that should be done
2813            later. Since there is always one reference the garbage collector will
2814            never get them */
2815 }
2816
2817
2818 /* Array Operations ***********************************************************/
2819
2820 /* GetArrayLength **************************************************************
2821
2822    Returns the number of elements in the array.
2823
2824 *******************************************************************************/
2825
2826 jsize _Jv_JNI_GetArrayLength(JNIEnv *env, jarray array)
2827 {
2828         java_handle_t *a;
2829         jsize          size;
2830
2831         TRACEJNICALLS(("_Jv_JNI_GetArrayLength(env=%p, array=%p)", env, array));
2832
2833         a = (java_handle_t *) array;
2834
2835         size = LLNI_array_size(a);
2836
2837         return size;
2838 }
2839
2840
2841 /* NewObjectArray **************************************************************
2842
2843    Constructs a new array holding objects in class elementClass. All
2844    elements are initially set to initialElement.
2845
2846 *******************************************************************************/
2847
2848 jobjectArray _Jv_JNI_NewObjectArray(JNIEnv *env, jsize length,
2849                                                                         jclass elementClass, jobject initialElement)
2850 {
2851         classinfo                 *c;
2852         java_handle_t             *o;
2853         java_handle_objectarray_t *oa;
2854         s4                         i;
2855
2856         STATISTICS(jniinvokation());
2857
2858         c = LLNI_classinfo_unwrap(elementClass);
2859         o = (java_handle_t *) initialElement;
2860
2861         if (length < 0) {
2862                 exceptions_throw_negativearraysizeexception();
2863                 return NULL;
2864         }
2865
2866     oa = builtin_anewarray(length, c);
2867
2868         if (oa == NULL)
2869                 return NULL;
2870
2871         /* set all elements to initialElement */
2872
2873         for (i = 0; i < length; i++)
2874                 array_objectarray_element_set(oa, i, o);
2875
2876         return (jobjectArray) jni_NewLocalRef(env, (jobject) oa);
2877 }
2878
2879
2880 jobject _Jv_JNI_GetObjectArrayElement(JNIEnv *env, jobjectArray array,
2881                                                                           jsize index)
2882 {
2883         java_handle_objectarray_t *oa;
2884         java_handle_t             *o;
2885
2886         STATISTICS(jniinvokation());
2887
2888         oa = (java_handle_objectarray_t *) array;
2889
2890         if (index >= LLNI_array_size(oa)) {
2891                 exceptions_throw_arrayindexoutofboundsexception();
2892                 return NULL;
2893         }
2894
2895         o = array_objectarray_element_get(oa, index);
2896
2897         return jni_NewLocalRef(env, (jobject) o);
2898 }
2899
2900
2901 void _Jv_JNI_SetObjectArrayElement(JNIEnv *env, jobjectArray array,
2902                                                                    jsize index, jobject val)
2903 {
2904         java_handle_objectarray_t *oa;
2905         java_handle_t             *o;
2906
2907         STATISTICS(jniinvokation());
2908
2909         oa = (java_handle_objectarray_t *) array;
2910         o  = (java_handle_t *) val;
2911
2912         if (index >= LLNI_array_size(oa)) {
2913                 exceptions_throw_arrayindexoutofboundsexception();
2914                 return;
2915         }
2916
2917         /* check if the class of value is a subclass of the element class
2918            of the array */
2919
2920         if (!builtin_canstore(oa, o))
2921                 return;
2922
2923         array_objectarray_element_set(oa, index, o);
2924 }
2925
2926
2927 #define JNI_NEW_ARRAY(name, type, intern)                \
2928 type _Jv_JNI_New##name##Array(JNIEnv *env, jsize len)    \
2929 {                                                        \
2930         java_handle_##intern##array_t *a;                    \
2931                                                          \
2932         STATISTICS(jniinvokation());                         \
2933                                                          \
2934         if (len < 0) {                                       \
2935                 exceptions_throw_negativearraysizeexception();   \
2936                 return NULL;                                     \
2937         }                                                    \
2938                                                          \
2939         a = builtin_newarray_##intern(len);                  \
2940                                                          \
2941         return (type) jni_NewLocalRef(env, (jobject) a); \
2942 }
2943
2944 JNI_NEW_ARRAY(Boolean, jbooleanArray, boolean)
2945 JNI_NEW_ARRAY(Byte,    jbyteArray,    byte)
2946 JNI_NEW_ARRAY(Char,    jcharArray,    char)
2947 JNI_NEW_ARRAY(Short,   jshortArray,   short)
2948 JNI_NEW_ARRAY(Int,     jintArray,     int)
2949 JNI_NEW_ARRAY(Long,    jlongArray,    long)
2950 JNI_NEW_ARRAY(Float,   jfloatArray,   float)
2951 JNI_NEW_ARRAY(Double,  jdoubleArray,  double)
2952
2953
2954 /* Get<PrimitiveType>ArrayElements *********************************************
2955
2956    A family of functions that returns the body of the primitive array.
2957
2958 *******************************************************************************/
2959
2960 #define JNI_GET_ARRAY_ELEMENTS(name, type, intern)                     \
2961 type *_Jv_JNI_Get##name##ArrayElements(JNIEnv *env, type##Array array, \
2962                                                                                  jboolean *isCopy)             \
2963 {                                                                      \
2964         java_handle_##intern##array_t *a;                                  \
2965                                                                        \
2966         TRACEJNICALLS(("_Jv_JNI_Get" STR(name) "ArrayElements(env=%p, array=%p, isCopy=%d)", env, array, isCopy)); \
2967                                                                        \
2968         a = (java_handle_##intern##array_t *) array;                       \
2969                                                                        \
2970         if (isCopy)                                                        \
2971                 *isCopy = JNI_FALSE;                                           \
2972                                                                        \
2973         return (type *) LLNI_array_data(a);                                \
2974 }
2975
2976 JNI_GET_ARRAY_ELEMENTS(Boolean, jboolean, boolean)
2977 JNI_GET_ARRAY_ELEMENTS(Byte,    jbyte,    byte)
2978 JNI_GET_ARRAY_ELEMENTS(Char,    jchar,    char)
2979 JNI_GET_ARRAY_ELEMENTS(Short,   jshort,   short)
2980 JNI_GET_ARRAY_ELEMENTS(Int,     jint,     int)
2981 JNI_GET_ARRAY_ELEMENTS(Long,    jlong,    long)
2982 JNI_GET_ARRAY_ELEMENTS(Float,   jfloat,   float)
2983 JNI_GET_ARRAY_ELEMENTS(Double,  jdouble,  double)
2984
2985
2986 /* Release<PrimitiveType>ArrayElements *****************************************
2987
2988    A family of functions that informs the VM that the native code no
2989    longer needs access to elems. The elems argument is a pointer
2990    derived from array using the corresponding
2991    Get<PrimitiveType>ArrayElements() function. If necessary, this
2992    function copies back all changes made to elems to the original
2993    array.
2994
2995 *******************************************************************************/
2996
2997 #define JNI_RELEASE_ARRAY_ELEMENTS(name, type, intern, intern2)            \
2998 void _Jv_JNI_Release##name##ArrayElements(JNIEnv *env, type##Array array,  \
2999                                                                                   type *elems, jint mode)          \
3000 {                                                                          \
3001         java_handle_##intern##array_t *a;                                      \
3002                                                                            \
3003         STATISTICS(jniinvokation());                                           \
3004                                                                            \
3005         a = (java_handle_##intern##array_t *) array;                           \
3006                                                                            \
3007         if (elems != (type *) LLNI_array_data(a)) {                            \
3008                 switch (mode) {                                                    \
3009                 case JNI_COMMIT:                                                   \
3010                         MCOPY(LLNI_array_data(a), elems, intern2, LLNI_array_size(a)); \
3011                         break;                                                         \
3012                 case 0:                                                            \
3013                         MCOPY(LLNI_array_data(a), elems, intern2, LLNI_array_size(a)); \
3014                         /* XXX TWISTI how should it be freed? */                       \
3015                         break;                                                         \
3016                 case JNI_ABORT:                                                    \
3017                         /* XXX TWISTI how should it be freed? */                       \
3018                         break;                                                         \
3019                 }                                                                  \
3020         }                                                                      \
3021 }
3022
3023 JNI_RELEASE_ARRAY_ELEMENTS(Boolean, jboolean, boolean, u1)
3024 JNI_RELEASE_ARRAY_ELEMENTS(Byte,    jbyte,    byte,    s1)
3025 JNI_RELEASE_ARRAY_ELEMENTS(Char,    jchar,    char,    u2)
3026 JNI_RELEASE_ARRAY_ELEMENTS(Short,   jshort,   short,   s2)
3027 JNI_RELEASE_ARRAY_ELEMENTS(Int,     jint,     int,     s4)
3028 JNI_RELEASE_ARRAY_ELEMENTS(Long,    jlong,    long,    s8)
3029 JNI_RELEASE_ARRAY_ELEMENTS(Float,   jfloat,   float,   float)
3030 JNI_RELEASE_ARRAY_ELEMENTS(Double,  jdouble,  double,  double)
3031
3032
3033 /*  Get<PrimitiveType>ArrayRegion **********************************************
3034
3035         A family of functions that copies a region of a primitive array
3036         into a buffer.
3037
3038 *******************************************************************************/
3039
3040 #define JNI_GET_ARRAY_REGION(name, type, intern, intern2)               \
3041 void _Jv_JNI_Get##name##ArrayRegion(JNIEnv *env, type##Array array,     \
3042                                                                         jsize start, jsize len, type *buf)  \
3043 {                                                                       \
3044         java_handle_##intern##array_t *a;                                   \
3045                                                                         \
3046         TRACEJNICALLS(("_Jv_JNI_Get" STR(name) "ArrayRegion(env=%p, array=%p, start=%d, len=%d, buf=%p)", env, array, start, len, buf)); \
3047                                                                         \
3048         a = (java_handle_##intern##array_t *) array;                        \
3049                                                                         \
3050         if ((start < 0) || (len < 0) || (start + len > LLNI_array_size(a))) \
3051                 exceptions_throw_arrayindexoutofboundsexception();              \
3052         else                                                                \
3053                 MCOPY(buf, &LLNI_array_direct(a, start), intern2, len);         \
3054 }
3055
3056 JNI_GET_ARRAY_REGION(Boolean, jboolean, boolean, u1)
3057 JNI_GET_ARRAY_REGION(Byte,    jbyte,    byte,    s1)
3058 JNI_GET_ARRAY_REGION(Char,    jchar,    char,    u2)
3059 JNI_GET_ARRAY_REGION(Short,   jshort,   short,   s2)
3060 JNI_GET_ARRAY_REGION(Int,     jint,     int,     s4)
3061 JNI_GET_ARRAY_REGION(Long,    jlong,    long,    s8)
3062 JNI_GET_ARRAY_REGION(Float,   jfloat,   float,   float)
3063 JNI_GET_ARRAY_REGION(Double,  jdouble,  double,  double)
3064
3065
3066 /*  Set<PrimitiveType>ArrayRegion **********************************************
3067
3068         A family of functions that copies back a region of a primitive
3069         array from a buffer.
3070
3071 *******************************************************************************/
3072
3073 #define JNI_SET_ARRAY_REGION(name, type, intern, intern2)                    \
3074 void _Jv_JNI_Set##name##ArrayRegion(JNIEnv *env, type##Array array,          \
3075                                                                         jsize start, jsize len, const type *buf) \
3076 {                                                                            \
3077         java_handle_##intern##array_t *a;                                        \
3078                                                                              \
3079         STATISTICS(jniinvokation());                                             \
3080                                                                              \
3081         a = (java_handle_##intern##array_t *) array;                             \
3082                                                                              \
3083         if ((start < 0) || (len < 0) || (start + len > LLNI_array_size(a)))      \
3084                 exceptions_throw_arrayindexoutofboundsexception();                   \
3085         else                                                                     \
3086                 MCOPY(&LLNI_array_direct(a, start), buf, intern2, len);              \
3087 }
3088
3089 JNI_SET_ARRAY_REGION(Boolean, jboolean, boolean, u1)
3090 JNI_SET_ARRAY_REGION(Byte,    jbyte,    byte,    s1)
3091 JNI_SET_ARRAY_REGION(Char,    jchar,    char,    u2)
3092 JNI_SET_ARRAY_REGION(Short,   jshort,   short,   s2)
3093 JNI_SET_ARRAY_REGION(Int,     jint,     int,     s4)
3094 JNI_SET_ARRAY_REGION(Long,    jlong,    long,    s8)
3095 JNI_SET_ARRAY_REGION(Float,   jfloat,   float,   float)
3096 JNI_SET_ARRAY_REGION(Double,  jdouble,  double,  double)
3097
3098
3099 /* Registering Native Methods *************************************************/
3100
3101 /* RegisterNatives *************************************************************
3102
3103    Registers native methods with the class specified by the clazz
3104    argument. The methods parameter specifies an array of
3105    JNINativeMethod structures that contain the names, signatures, and
3106    function pointers of the native methods. The nMethods parameter
3107    specifies the number of native methods in the array.
3108
3109 *******************************************************************************/
3110
3111 jint _Jv_JNI_RegisterNatives(JNIEnv *env, jclass clazz,
3112                                                          const JNINativeMethod *methods, jint nMethods)
3113 {
3114         classinfo *c;
3115
3116         STATISTICS(jniinvokation());
3117
3118         c = LLNI_classinfo_unwrap(clazz);
3119
3120         /* XXX: if implemented this needs a call to jvmti_NativeMethodBind
3121         if (jvmti) jvmti_NativeMethodBind(method, address,  new_address_ptr);
3122         */
3123
3124         native_method_register(c->name, methods, nMethods);
3125
3126     return 0;
3127 }
3128
3129
3130 /* UnregisterNatives ***********************************************************
3131
3132    Unregisters native methods of a class. The class goes back to the
3133    state before it was linked or registered with its native method
3134    functions.
3135
3136    This function should not be used in normal native code. Instead, it
3137    provides special programs a way to reload and relink native
3138    libraries.
3139
3140 *******************************************************************************/
3141
3142 jint _Jv_JNI_UnregisterNatives(JNIEnv *env, jclass clazz)
3143 {
3144         STATISTICS(jniinvokation());
3145
3146         /* XXX TWISTI hmm, maybe we should not support that (like kaffe) */
3147
3148     log_text("JNI-Call: UnregisterNatives: IMPLEMENT ME!!!");
3149
3150     return 0;
3151 }
3152
3153
3154 /* Monitor Operations *********************************************************/
3155
3156 /* MonitorEnter ****************************************************************
3157
3158    Enters the monitor associated with the underlying Java object
3159    referred to by obj.
3160
3161 *******************************************************************************/
3162
3163 jint _Jv_JNI_MonitorEnter(JNIEnv *env, jobject obj)
3164 {
3165         STATISTICS(jniinvokation());
3166
3167         if (obj == NULL) {
3168                 exceptions_throw_nullpointerexception();
3169                 return JNI_ERR;
3170         }
3171
3172         LOCK_MONITOR_ENTER(obj);
3173
3174         return JNI_OK;
3175 }
3176
3177
3178 /* MonitorExit *****************************************************************
3179
3180    The current thread must be the owner of the monitor associated with
3181    the underlying Java object referred to by obj. The thread
3182    decrements the counter indicating the number of times it has
3183    entered this monitor. If the value of the counter becomes zero, the
3184    current thread releases the monitor.
3185
3186 *******************************************************************************/
3187
3188 jint _Jv_JNI_MonitorExit(JNIEnv *env, jobject obj)
3189 {
3190         STATISTICS(jniinvokation());
3191
3192         if (obj == NULL) {
3193                 exceptions_throw_nullpointerexception();
3194                 return JNI_ERR;
3195         }
3196
3197         LOCK_MONITOR_EXIT(obj);
3198
3199         return JNI_OK;
3200 }
3201
3202
3203 /* JavaVM Interface ***********************************************************/
3204
3205 /* GetJavaVM *******************************************************************
3206
3207    Returns the Java VM interface (used in the Invocation API)
3208    associated with the current thread. The result is placed at the
3209    location pointed to by the second argument, vm.
3210
3211 *******************************************************************************/
3212
3213 jint _Jv_JNI_GetJavaVM(JNIEnv *env, JavaVM **javavm)
3214 {
3215         STATISTICS(jniinvokation());
3216
3217     *javavm = vm->get_javavm();
3218
3219         return 0;
3220 }
3221
3222
3223 /* GetStringRegion *************************************************************
3224
3225    Copies len number of Unicode characters beginning at offset start
3226    to the given buffer buf.
3227
3228    Throws StringIndexOutOfBoundsException on index overflow.
3229
3230 *******************************************************************************/
3231
3232 void _Jv_JNI_GetStringRegion(JNIEnv* env, jstring str, jsize start, jsize len,
3233                                                          jchar *buf)
3234 {
3235         java_lang_String        *s;
3236         java_handle_chararray_t *ca;
3237
3238         STATISTICS(jniinvokation());
3239
3240         s  = (java_lang_String *) str;
3241         LLNI_field_get_ref(s, value, ca);
3242
3243         if ((start < 0) || (len < 0) || (start > LLNI_field_direct(s, count)) ||
3244                 (start + len > LLNI_field_direct(s, count))) {
3245                 exceptions_throw_stringindexoutofboundsexception();
3246                 return;
3247         }
3248
3249         MCOPY(buf, &LLNI_array_direct(ca, start), u2, len);
3250 }
3251
3252
3253 /* GetStringUTFRegion **********************************************************
3254
3255     Translates len number of Unicode characters beginning at offset
3256     start into UTF-8 format and place the result in the given buffer
3257     buf.
3258
3259     Throws StringIndexOutOfBoundsException on index overflow.
3260
3261 *******************************************************************************/
3262
3263 void _Jv_JNI_GetStringUTFRegion(JNIEnv* env, jstring str, jsize start,
3264                                                                 jsize len, char *buf)
3265 {
3266         java_lang_String        *s;
3267         java_handle_chararray_t *ca;
3268         s4                       i;
3269         int32_t                  count;
3270         int32_t                  offset;
3271
3272         TRACEJNICALLS(("_Jv_JNI_GetStringUTFRegion(env=%p, str=%p, start=%d, len=%d, buf=%p)", env, str, start, len, buf));
3273
3274         s  = (java_lang_String *) str;
3275         LLNI_field_get_ref(s, value, ca);
3276         LLNI_field_get_val(s, count, count);
3277         LLNI_field_get_val(s, offset, offset);
3278
3279         if ((start < 0) || (len < 0) || (start > count) || (start + len > count)) {
3280                 exceptions_throw_stringindexoutofboundsexception();
3281                 return;
3282         }
3283
3284         for (i = 0; i < len; i++)
3285                 buf[i] = LLNI_array_direct(ca, offset + start + i);
3286
3287         buf[i] = '\0';
3288 }
3289
3290
3291 /* GetPrimitiveArrayCritical ***************************************************
3292
3293    Obtain a direct pointer to array elements.
3294
3295    ATTENTION: Critical section keeps open when this function returns!
3296    See ReleasePrimitiveArrayCritical.
3297
3298 *******************************************************************************/
3299
3300 void* jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy)
3301 {
3302         java_handle_t*   h;
3303         java_array_t*    a;
3304         arraydescriptor* ad;
3305         void*            data;
3306
3307         TRACEJNICALLS(("jni_GetPrimitiveArrayCritical(env=%p, array=%p, isCopy=%d)", env, array, isCopy));
3308
3309         if (isCopy != NULL) {
3310                 *isCopy = JNI_FALSE;
3311         }
3312
3313         LLNI_CRITICAL_START;
3314
3315         h  = (java_handle_t*) array;
3316         a  = (java_array_t*) LLNI_UNWRAP(h);
3317         ad = a->objheader.vftbl->arraydesc;
3318
3319         /* Sanity check. */
3320
3321         assert(ad != NULL);
3322
3323         data = (void*) (((intptr_t) a) + ad->dataoffset);
3324
3325         return data;
3326 }
3327
3328
3329 /* ReleasePrimitiveArrayCritical ***********************************************
3330
3331    No specific documentation.
3332
3333    ATTENTION: This function closes the critical section opened in
3334    GetPrimitiveArrayCritical!
3335
3336 *******************************************************************************/
3337
3338 void jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode)
3339 {
3340         TRACEJNICALLS(("jni_ReleasePrimitiveArrayCritical(env=%p, array=%p, carray=%p, mode=%d)", env, array, carray, mode));
3341
3342         LLNI_CRITICAL_END;
3343 }
3344
3345
3346 /* GetStringCritical ***********************************************************
3347
3348    The semantics of these two functions are similar to the existing
3349    Get/ReleaseStringChars functions.
3350
3351 *******************************************************************************/
3352
3353 const jchar *_Jv_JNI_GetStringCritical(JNIEnv *env, jstring string,
3354                                                                            jboolean *isCopy)
3355 {
3356         STATISTICS(jniinvokation());
3357
3358         return jni_GetStringChars(env, string, isCopy);
3359 }
3360
3361
3362 void _Jv_JNI_ReleaseStringCritical(JNIEnv *env, jstring string,
3363                                                                    const jchar *cstring)
3364 {
3365         STATISTICS(jniinvokation());
3366
3367         _Jv_JNI_ReleaseStringChars(env, string, cstring);
3368 }
3369
3370
3371 jweak _Jv_JNI_NewWeakGlobalRef(JNIEnv* env, jobject obj)
3372 {
3373         TRACEJNICALLS(("_Jv_JNI_NewWeakGlobalRef(env=%p, obj=%p): IMPLEMENT ME!", env, obj));
3374
3375         return (jweak) obj;
3376 }
3377
3378
3379 void _Jv_JNI_DeleteWeakGlobalRef(JNIEnv* env, jweak ref)
3380 {
3381         TRACEJNICALLS(("_Jv_JNI_DeleteWeakGlobalRef(env=%p, ref=%p): IMPLEMENT ME", env, ref));
3382 }
3383
3384
3385 /* NewGlobalRef ****************************************************************
3386
3387    Creates a new global reference to the object referred to by the obj
3388    argument.
3389
3390 *******************************************************************************/
3391
3392 jobject jni_NewGlobalRef(JNIEnv* env, jobject obj)
3393 {
3394         hashtable_global_ref_entry *gre;
3395         u4   key;                           /* hashkey                            */
3396         u4   slot;                          /* slot in hashtable                  */
3397         java_handle_t *o;
3398
3399         TRACEJNICALLS(("jni_NewGlobalRef(env=%p, obj=%p)", env, obj));
3400
3401         o = (java_handle_t *) obj;
3402
3403         LOCK_MONITOR_ENTER(hashtable_global_ref->header);
3404
3405         LLNI_CRITICAL_START;
3406
3407         /* normally addresses are aligned to 4, 8 or 16 bytes */
3408
3409         key  = heap_hashcode(LLNI_DIRECT(o)) >> 4; /* align to 16-byte boundaries */
3410         slot = key & (hashtable_global_ref->size - 1);
3411         gre  = (hashtable_global_ref_entry*) hashtable_global_ref->ptr[slot];
3412
3413         /* search external hash chain for the entry */
3414
3415         while (gre) {
3416                 if (gre->o == LLNI_DIRECT(o)) {
3417                         /* global object found, increment the reference */
3418
3419                         gre->refs++;
3420
3421                         break;
3422                 }
3423
3424                 gre = gre->hashlink;                /* next element in external chain */
3425         }
3426
3427         LLNI_CRITICAL_END;
3428
3429         /* global ref not found, create a new one */
3430
3431         if (gre == NULL) {
3432                 gre = GCNEW_UNCOLLECTABLE(hashtable_global_ref_entry, 1);
3433
3434 #if defined(ENABLE_GC_CACAO)
3435                 /* register global ref with the GC */
3436
3437                 gc_reference_register(&(gre->o), GC_REFTYPE_JNI_GLOBALREF);
3438 #endif
3439
3440                 LLNI_CRITICAL_START;
3441
3442                 gre->o    = LLNI_DIRECT(o);
3443                 gre->refs = 1;
3444
3445                 LLNI_CRITICAL_END;
3446
3447                 /* insert entry into hashtable */
3448
3449                 gre->hashlink = (hashtable_global_ref_entry*) hashtable_global_ref->ptr[slot];
3450
3451                 hashtable_global_ref->ptr[slot] = gre;
3452
3453                 /* update number of hashtable-entries */
3454
3455                 hashtable_global_ref->entries++;
3456         }
3457
3458         LOCK_MONITOR_EXIT(hashtable_global_ref->header);
3459
3460 #if defined(ENABLE_HANDLES)
3461         return gre;
3462 #else
3463         return obj;
3464 #endif
3465 }
3466
3467
3468 /* DeleteGlobalRef *************************************************************
3469
3470    Deletes the global reference pointed to by globalRef.
3471
3472 *******************************************************************************/
3473
3474 void jni_DeleteGlobalRef(JNIEnv* env, jobject globalRef)
3475 {
3476         hashtable_global_ref_entry *gre;
3477         hashtable_global_ref_entry *prevgre;
3478         u4   key;                           /* hashkey                            */
3479         u4   slot;                          /* slot in hashtable                  */
3480         java_handle_t              *o;
3481
3482         TRACEJNICALLS(("jni_DeleteGlobalRef(env=%p, globalRef=%p)", env, globalRef));
3483
3484         o = (java_handle_t *) globalRef;
3485
3486         LOCK_MONITOR_ENTER(hashtable_global_ref->header);
3487
3488         LLNI_CRITICAL_START;
3489
3490         /* normally addresses are aligned to 4, 8 or 16 bytes */
3491
3492         key  = heap_hashcode(LLNI_DIRECT(o)) >> 4; /* align to 16-byte boundaries */
3493         slot = key & (hashtable_global_ref->size - 1);
3494         gre  = (hashtable_global_ref_entry*) hashtable_global_ref->ptr[slot];
3495
3496         /* initialize prevgre */
3497
3498         prevgre = NULL;
3499
3500         /* search external hash chain for the entry */
3501
3502         while (gre) {
3503                 if (gre->o == LLNI_DIRECT(o)) {
3504                         /* global object found, decrement the reference count */
3505
3506                         gre->refs--;
3507
3508                         /* if reference count is 0, remove the entry */
3509
3510                         if (gre->refs == 0) {
3511                                 /* special handling if it's the first in the chain */
3512
3513                                 if (prevgre == NULL)
3514                                         hashtable_global_ref->ptr[slot] = gre->hashlink;
3515                                 else
3516                                         prevgre->hashlink = gre->hashlink;
3517
3518 #if defined(ENABLE_GC_CACAO)
3519                                 /* unregister global ref with the GC */
3520
3521                                 gc_reference_unregister(&(gre->o));
3522 #endif
3523
3524                                 GCFREE(gre);
3525                         }
3526
3527                         LLNI_CRITICAL_END;
3528
3529                         LOCK_MONITOR_EXIT(hashtable_global_ref->header);
3530
3531                         return;
3532                 }
3533
3534                 prevgre = gre;                    /* save current pointer for removal */
3535                 gre     = gre->hashlink;            /* next element in external chain */
3536         }
3537
3538         log_println("jni_DeleteGlobalRef: Global reference not found.");
3539
3540         LLNI_CRITICAL_END;
3541
3542         LOCK_MONITOR_EXIT(hashtable_global_ref->header);
3543 }
3544
3545
3546 /* ExceptionCheck **************************************************************
3547
3548    Returns JNI_TRUE when there is a pending exception; otherwise,
3549    returns JNI_FALSE.
3550
3551 *******************************************************************************/
3552
3553 jboolean _Jv_JNI_ExceptionCheck(JNIEnv *env)
3554 {
3555         java_handle_t *o;
3556
3557         STATISTICS(jniinvokation());
3558
3559         o = exceptions_get_exception();
3560
3561         return (o != NULL) ? JNI_TRUE : JNI_FALSE;
3562 }
3563
3564
3565 /* New JNI 1.4 functions ******************************************************/
3566
3567 /* NewDirectByteBuffer *********************************************************
3568
3569    Allocates and returns a direct java.nio.ByteBuffer referring to the
3570    block of memory starting at the memory address address and
3571    extending capacity bytes.
3572
3573 *******************************************************************************/
3574
3575 jobject jni_NewDirectByteBuffer(JNIEnv *env, void *address, jlong capacity)
3576 {
3577 #if defined(ENABLE_JAVASE)
3578 # if defined(WITH_JAVA_RUNTIME_LIBRARY_GNU_CLASSPATH)
3579         java_handle_t           *nbuf;
3580
3581 # if SIZEOF_VOID_P == 8
3582         gnu_classpath_Pointer64 *paddress;
3583 # else
3584         gnu_classpath_Pointer32 *paddress;
3585 # endif
3586
3587         TRACEJNICALLSENTER(("jni_NewDirectByteBuffer(env=%p, address=%p, capacity=%ld)", env, address, capacity));
3588
3589         /* alocate a gnu.classpath.Pointer{32,64} object */
3590
3591 # if SIZEOF_VOID_P == 8
3592         if (!(paddress = (gnu_classpath_Pointer64 *)
3593                   builtin_new(class_gnu_classpath_Pointer64)))
3594 # else
3595         if (!(paddress = (gnu_classpath_Pointer32 *)
3596                   builtin_new(class_gnu_classpath_Pointer32)))
3597 # endif
3598                 return NULL;
3599
3600         /* fill gnu.classpath.Pointer{32,64} with address */
3601
3602         LLNI_field_set_val(paddress, data, (ptrint) address);
3603
3604         /* create a java.nio.DirectByteBufferImpl$ReadWrite object */
3605
3606         nbuf = (java_handle_t*) jni_NewObject(env, (jclass) class_java_nio_DirectByteBufferImpl_ReadWrite,
3607                                                                                   (jmethodID) dbbirw_init, NULL, paddress,
3608                                                                                   (jint) capacity, (jint) capacity, (jint) 0);
3609
3610         /* add local reference and return the value */
3611
3612         TRACEJNICALLSEXIT(("->%p", nbuf));
3613
3614         return jni_NewLocalRef(env, (jobject) nbuf);
3615
3616 # elif defined(WITH_JAVA_RUNTIME_LIBRARY_OPENJDK)
3617
3618         jobject o;
3619         int64_t addr;
3620         int32_t cap;
3621
3622         TRACEJNICALLSENTER(("jni_NewDirectByteBuffer(env=%p, address=%p, capacity=%ld)", env, address, capacity));
3623
3624         /* Be paranoid about address sign-extension. */
3625
3626         addr = (int64_t) ((uintptr_t) address);
3627         cap  = (int32_t) capacity;
3628
3629         o = jni_NewObject(env, (jclass) class_java_nio_DirectByteBuffer,
3630                                           (jmethodID) dbb_init, addr, cap);
3631
3632         /* Add local reference and return the value. */
3633
3634         TRACEJNICALLSEXIT(("->%p", o));
3635
3636         return jni_NewLocalRef(env, o);
3637
3638 # else
3639 #  error unknown classpath configuration
3640 # endif
3641
3642 #else
3643         vm_abort("jni_NewDirectByteBuffer: Not implemented in this configuration.");
3644
3645         /* keep compiler happy */
3646
3647         return NULL;
3648 #endif
3649 }
3650
3651
3652 /* GetDirectBufferAddress ******************************************************
3653
3654    Fetches and returns the starting address of the memory region
3655    referenced by the given direct java.nio.Buffer.
3656
3657 *******************************************************************************/
3658
3659 void *_Jv_JNI_GetDirectBufferAddress(JNIEnv *env, jobject buf)
3660 {
3661 #if defined(ENABLE_JAVASE)
3662         java_handle_t                 *h;
3663
3664 # if defined(WITH_JAVA_RUNTIME_LIBRARY_GNU_CLASSPATH)
3665
3666         java_nio_DirectByteBufferImpl *nbuf;
3667         gnu_classpath_Pointer         *po;
3668 #  if SIZEOF_VOID_P == 8
3669         gnu_classpath_Pointer64       *paddress;
3670         int64_t                        address;
3671 #  else
3672         gnu_classpath_Pointer32       *paddress;
3673         int32_t                        address;
3674 #  endif
3675         void                          *p;
3676
3677         TRACEJNICALLS(("_Jv_JNI_GetDirectBufferAddress(env=%p, buf=%p)", env, buf));
3678
3679         /* Prevent compiler warning. */
3680
3681         h = (java_handle_t *) buf;
3682
3683         if ((h != NULL) && !builtin_instanceof(h, class_java_nio_Buffer))
3684                 return NULL;
3685
3686         nbuf = (java_nio_DirectByteBufferImpl *) buf;
3687
3688         LLNI_field_get_ref(nbuf, address, po);
3689
3690 #  if SIZEOF_VOID_P == 8
3691         paddress = (gnu_classpath_Pointer64 *) po;
3692 #  else
3693         paddress = (gnu_classpath_Pointer32 *) po;
3694 #  endif
3695
3696         if (paddress == NULL)
3697                 return NULL;
3698
3699         LLNI_field_get_val(paddress, data, address);
3700
3701         p = (void *) (intptr_t) address;
3702
3703         return p;
3704
3705 # elif defined(WITH_JAVA_RUNTIME_LIBRARY_OPENJDK)
3706
3707         java_nio_Buffer *o;
3708         int64_t          address;
3709         void            *p;
3710
3711         TRACEJNICALLS(("_Jv_JNI_GetDirectBufferAddress(env=%p, buf=%p)", env, buf));
3712
3713         /* Prevent compiler warning. */
3714
3715         h = (java_handle_t *) buf;
3716
3717         if ((h != NULL) && !builtin_instanceof(h, class_sun_nio_ch_DirectBuffer))
3718                 return NULL;
3719
3720         o = (java_nio_Buffer *) buf;
3721
3722         LLNI_field_get_val(o, address, address);
3723
3724         p = (void *) (intptr_t) address;
3725
3726         return p;
3727
3728 # else
3729 #  error unknown classpath configuration
3730 # endif
3731
3732 #else
3733
3734         vm_abort("_Jv_JNI_GetDirectBufferAddress: not implemented in this configuration");
3735
3736         /* keep compiler happy */
3737
3738         return NULL;
3739
3740 #endif
3741 }
3742
3743
3744 /* GetDirectBufferCapacity *****************************************************
3745
3746    Fetches and returns the capacity in bytes of the memory region
3747    referenced by the given direct java.nio.Buffer.
3748
3749 *******************************************************************************/
3750
3751 jlong _Jv_JNI_GetDirectBufferCapacity(JNIEnv* env, jobject buf)
3752 {
3753 #if defined(ENABLE_JAVASE) && defined(WITH_JAVA_RUNTIME_LIBRARY_GNU_CLASSPATH)
3754         java_handle_t   *o;
3755         java_nio_Buffer *nbuf;
3756         jlong            capacity;
3757
3758         STATISTICS(jniinvokation());
3759
3760         o = (java_handle_t *) buf;
3761
3762         if (!builtin_instanceof(o, class_java_nio_DirectByteBufferImpl))
3763                 return -1;
3764
3765         nbuf = (java_nio_Buffer *) o;
3766
3767         LLNI_field_get_val(nbuf, cap, capacity);
3768
3769         return capacity;
3770 #else
3771         vm_abort("_Jv_JNI_GetDirectBufferCapacity: not implemented in this configuration");
3772
3773         /* keep compiler happy */
3774
3775         return 0;
3776 #endif
3777 }
3778
3779
3780 /* GetObjectRefType ************************************************************
3781
3782    Returns the type of the object referred to by the obj argument. The
3783    argument obj can either be a local, global or weak global
3784    reference.
3785
3786 *******************************************************************************/
3787
3788 jobjectRefType jni_GetObjectRefType(JNIEnv *env, jobject obj)
3789 {
3790         log_println("jni_GetObjectRefType: IMPLEMENT ME!");
3791
3792         return (jobjectRefType) NULL;
3793 }
3794
3795
3796 /* DestroyJavaVM ***************************************************************
3797
3798    Unloads a Java VM and reclaims its resources. Only the main thread
3799    can unload the VM. The system waits until the main thread is only
3800    remaining user thread before it destroys the VM.
3801
3802 *******************************************************************************/
3803
3804 jint _Jv_JNI_DestroyJavaVM(JavaVM *javavm)
3805 {
3806         int status;
3807
3808         TRACEJNICALLS(("_Jv_JNI_DestroyJavaVM(javavm=%p)", javavm));
3809
3810         if (vm->is_created() == false)
3811                 return JNI_ERR;
3812
3813     status = vm_destroy(javavm);
3814
3815         return status;
3816 }
3817
3818
3819 /* AttachCurrentThread *********************************************************
3820
3821    Attaches the current thread to a Java VM. Returns a JNI interface
3822    pointer in the JNIEnv argument.
3823
3824    Trying to attach a thread that is already attached is a no-op.
3825
3826    A native thread cannot be attached simultaneously to two Java VMs.
3827
3828    When a thread is attached to the VM, the context class loader is
3829    the bootstrap loader.
3830
3831 *******************************************************************************/
3832
3833 static int jni_attach_current_thread(void **p_env, void *thr_args, bool isdaemon)
3834 {
3835 #if defined(ENABLE_THREADS)
3836         JavaVMAttachArgs *vm_aargs;
3837         bool              result;
3838
3839     /* If the current thread has already been attached, this operation
3840            is a no-op. */
3841
3842         result = thread_current_is_attached();
3843
3844         if (result == true) {
3845                 *p_env = vm->get_jnienv();
3846                 return JNI_OK;
3847         }
3848
3849         vm_aargs = (JavaVMAttachArgs *) thr_args;
3850
3851         if (vm_aargs != NULL) {
3852                 if ((vm_aargs->version != JNI_VERSION_1_2) &&
3853                         (vm_aargs->version != JNI_VERSION_1_4))
3854                         return JNI_EVERSION;
3855         }
3856
3857         if (!thread_attach_current_external_thread(vm_aargs, false))
3858                 return JNI_ERR;
3859
3860         if (!localref_table_init())
3861                 return JNI_ERR;
3862 #endif
3863
3864         *p_env = vm->get_jnienv();
3865
3866         return JNI_OK;
3867 }
3868
3869
3870 jint jni_AttachCurrentThread(JavaVM *javavm, void **p_env, void *thr_args)
3871 {
3872         int result;
3873
3874         TRACEJNICALLS(("jni_AttachCurrentThread(javavm=%p, p_env=%p, thr_args=%p)", javavm, p_env, thr_args));
3875
3876         if (vm->is_created() == false)
3877                 return JNI_ERR;
3878
3879         result = jni_attach_current_thread(p_env, thr_args, false);
3880
3881         return result;
3882 }
3883
3884
3885 /* DetachCurrentThread *********************************************************
3886
3887    Detaches the current thread from a Java VM. All Java monitors held
3888    by this thread are released. All Java threads waiting for this
3889    thread to die are notified.
3890
3891    In JDK 1.1, the main thread cannot be detached from the VM. It must
3892    call DestroyJavaVM to unload the entire VM.
3893
3894    In the JDK, the main thread can be detached from the VM.
3895
3896    The main thread, which is the thread that created the Java VM,
3897    cannot be detached from the VM. Instead, the main thread must call
3898    JNI_DestroyJavaVM() to unload the entire VM.
3899
3900 *******************************************************************************/
3901
3902 jint jni_DetachCurrentThread(JavaVM *vm)
3903 {
3904 #if defined(ENABLE_THREADS)
3905         bool result;
3906
3907         TRACEJNICALLS(("jni_DetachCurrentThread(vm=%p)", vm));
3908
3909     /* If the current thread has already been detached, this operation
3910            is a no-op. */
3911
3912         result = thread_current_is_attached();
3913
3914         if (result == false)
3915                 return true;
3916
3917         /* We need to pop all frames before we can destroy the table. */
3918
3919         localref_frame_pop_all();
3920
3921         if (!localref_table_destroy())
3922                 return JNI_ERR;
3923
3924         if (!thread_detach_current_external_thread())
3925                 return JNI_ERR;
3926 #endif
3927
3928         return JNI_OK;
3929 }
3930
3931
3932 /* GetEnv **********************************************************************
3933
3934    If the current thread is not attached to the VM, sets *env to NULL,
3935    and returns JNI_EDETACHED. If the specified version is not
3936    supported, sets *env to NULL, and returns JNI_EVERSION. Otherwise,
3937    sets *env to the appropriate interface, and returns JNI_OK.
3938
3939 *******************************************************************************/
3940
3941 jint jni_GetEnv(JavaVM *javavm, void **env, jint version)
3942 {
3943         TRACEJNICALLS(("jni_GetEnv(javavm=%p, env=%p, version=%d)", javavm, env, version));
3944
3945         if (vm->is_created() == false) {
3946                 *env = NULL;
3947                 return JNI_EDETACHED;
3948         }
3949
3950 #if defined(ENABLE_THREADS)
3951         if (thread_get_current() == NULL) {
3952                 *env = NULL;
3953
3954                 return JNI_EDETACHED;
3955         }
3956 #endif
3957
3958         /* Check the JNI version. */
3959
3960         if (jni_version_check(version) == true) {
3961                 *env = vm->get_jnienv();
3962                 return JNI_OK;
3963         }
3964
3965 #if defined(ENABLE_JVMTI)
3966         if ((version & JVMTI_VERSION_MASK_INTERFACE_TYPE)
3967                 == JVMTI_VERSION_INTERFACE_JVMTI) {
3968
3969                 *env = (void *) jvmti_new_environment();
3970
3971                 if (env != NULL)
3972                         return JNI_OK;
3973         }
3974 #endif
3975
3976         *env = NULL;
3977
3978         return JNI_EVERSION;
3979 }
3980
3981
3982 /* AttachCurrentThreadAsDaemon *************************************************
3983
3984    Same semantics as AttachCurrentThread, but the newly-created
3985    java.lang.Thread instance is a daemon.
3986
3987    If the thread has already been attached via either
3988    AttachCurrentThread or AttachCurrentThreadAsDaemon, this routine
3989    simply sets the value pointed to by penv to the JNIEnv of the
3990    current thread. In this case neither AttachCurrentThread nor this
3991    routine have any effect on the daemon status of the thread.
3992
3993 *******************************************************************************/
3994
3995 jint jni_AttachCurrentThreadAsDaemon(JavaVM *javavm, void **penv, void *args)
3996 {
3997         int result;
3998
3999         TRACEJNICALLS(("jni_AttachCurrentThreadAsDaemon(javavm=%p, penv=%p, args=%p)", javavm, penv, args));
4000
4001         if (vm->is_created() == false)
4002                 return JNI_ERR;
4003
4004         result = jni_attach_current_thread(penv, args, true);
4005
4006         return result;
4007 }
4008
4009
4010 /* JNI invocation table *******************************************************/
4011
4012 const struct JNIInvokeInterface_ _Jv_JNIInvokeInterface = {
4013         NULL,
4014         NULL,
4015         NULL,
4016
4017         _Jv_JNI_DestroyJavaVM,
4018         jni_AttachCurrentThread,
4019         jni_DetachCurrentThread,
4020         jni_GetEnv,
4021         jni_AttachCurrentThreadAsDaemon
4022 };
4023
4024
4025 /* JNI function table *********************************************************/
4026
4027 struct JNINativeInterface_ _Jv_JNINativeInterface = {
4028         NULL,
4029         NULL,
4030         NULL,
4031         NULL,
4032         _Jv_JNI_GetVersion,
4033
4034         _Jv_JNI_DefineClass,
4035         jni_FindClass,
4036         jni_FromReflectedMethod,
4037         jni_FromReflectedField,
4038         _Jv_JNI_ToReflectedMethod,
4039         _Jv_JNI_GetSuperclass,
4040         _Jv_JNI_IsAssignableFrom,
4041         _Jv_JNI_ToReflectedField,
4042
4043         _Jv_JNI_Throw,
4044         _Jv_JNI_ThrowNew,
4045         _Jv_JNI_ExceptionOccurred,
4046         jni_ExceptionDescribe,
4047         jni_ExceptionClear,
4048         _Jv_JNI_FatalError,
4049         jni_PushLocalFrame,
4050         jni_PopLocalFrame,
4051
4052         jni_NewGlobalRef,
4053         jni_DeleteGlobalRef,
4054         jni_DeleteLocalRef,
4055         _Jv_JNI_IsSameObject,
4056         jni_NewLocalRef,
4057         jni_EnsureLocalCapacity,
4058
4059         _Jv_JNI_AllocObject,
4060         jni_NewObject,
4061         _Jv_JNI_NewObjectV,
4062         _Jv_JNI_NewObjectA,
4063
4064         _Jv_JNI_GetObjectClass,
4065         _Jv_JNI_IsInstanceOf,
4066
4067         _Jv_JNI_GetMethodID,
4068
4069         _Jv_JNI_CallObjectMethod,
4070         _Jv_JNI_CallObjectMethodV,
4071         _Jv_JNI_CallObjectMethodA,
4072         _Jv_JNI_CallBooleanMethod,
4073         _Jv_JNI_CallBooleanMethodV,
4074         _Jv_JNI_CallBooleanMethodA,
4075         _Jv_JNI_CallByteMethod,
4076         _Jv_JNI_CallByteMethodV,
4077         _Jv_JNI_CallByteMethodA,
4078         _Jv_JNI_CallCharMethod,
4079         _Jv_JNI_CallCharMethodV,
4080         _Jv_JNI_CallCharMethodA,
4081         _Jv_JNI_CallShortMethod,
4082         _Jv_JNI_CallShortMethodV,
4083         _Jv_JNI_CallShortMethodA,
4084         _Jv_JNI_CallIntMethod,
4085         _Jv_JNI_CallIntMethodV,
4086         _Jv_JNI_CallIntMethodA,
4087         _Jv_JNI_CallLongMethod,
4088         _Jv_JNI_CallLongMethodV,
4089         _Jv_JNI_CallLongMethodA,
4090         _Jv_JNI_CallFloatMethod,
4091         _Jv_JNI_CallFloatMethodV,
4092         _Jv_JNI_CallFloatMethodA,
4093         _Jv_JNI_CallDoubleMethod,
4094         _Jv_JNI_CallDoubleMethodV,
4095         _Jv_JNI_CallDoubleMethodA,
4096         _Jv_JNI_CallVoidMethod,
4097         _Jv_JNI_CallVoidMethodV,
4098         _Jv_JNI_CallVoidMethodA,
4099
4100         _Jv_JNI_CallNonvirtualObjectMethod,
4101         _Jv_JNI_CallNonvirtualObjectMethodV,
4102         _Jv_JNI_CallNonvirtualObjectMethodA,
4103         _Jv_JNI_CallNonvirtualBooleanMethod,
4104         _Jv_JNI_CallNonvirtualBooleanMethodV,
4105         _Jv_JNI_CallNonvirtualBooleanMethodA,
4106         _Jv_JNI_CallNonvirtualByteMethod,
4107         _Jv_JNI_CallNonvirtualByteMethodV,
4108         _Jv_JNI_CallNonvirtualByteMethodA,
4109         _Jv_JNI_CallNonvirtualCharMethod,
4110         _Jv_JNI_CallNonvirtualCharMethodV,
4111         _Jv_JNI_CallNonvirtualCharMethodA,
4112         _Jv_JNI_CallNonvirtualShortMethod,
4113         _Jv_JNI_CallNonvirtualShortMethodV,
4114         _Jv_JNI_CallNonvirtualShortMethodA,
4115         _Jv_JNI_CallNonvirtualIntMethod,
4116         _Jv_JNI_CallNonvirtualIntMethodV,
4117         _Jv_JNI_CallNonvirtualIntMethodA,
4118         _Jv_JNI_CallNonvirtualLongMethod,
4119         _Jv_JNI_CallNonvirtualLongMethodV,
4120         _Jv_JNI_CallNonvirtualLongMethodA,
4121         _Jv_JNI_CallNonvirtualFloatMethod,
4122         _Jv_JNI_CallNonvirtualFloatMethodV,
4123         _Jv_JNI_CallNonvirtualFloatMethodA,
4124         _Jv_JNI_CallNonvirtualDoubleMethod,
4125         _Jv_JNI_CallNonvirtualDoubleMethodV,
4126         _Jv_JNI_CallNonvirtualDoubleMethodA,
4127         _Jv_JNI_CallNonvirtualVoidMethod,
4128         _Jv_JNI_CallNonvirtualVoidMethodV,
4129         _Jv_JNI_CallNonvirtualVoidMethodA,
4130
4131         _Jv_JNI_GetFieldID,
4132
4133         _Jv_JNI_GetObjectField,
4134         _Jv_JNI_GetBooleanField,
4135         _Jv_JNI_GetByteField,
4136         _Jv_JNI_GetCharField,
4137         _Jv_JNI_GetShortField,
4138         _Jv_JNI_GetIntField,
4139         _Jv_JNI_GetLongField,
4140         _Jv_JNI_GetFloatField,
4141         _Jv_JNI_GetDoubleField,
4142         _Jv_JNI_SetObjectField,
4143         _Jv_JNI_SetBooleanField,
4144         _Jv_JNI_SetByteField,
4145         _Jv_JNI_SetCharField,
4146         _Jv_JNI_SetShortField,
4147         _Jv_JNI_SetIntField,
4148         _Jv_JNI_SetLongField,
4149         _Jv_JNI_SetFloatField,
4150         _Jv_JNI_SetDoubleField,
4151
4152         _Jv_JNI_GetStaticMethodID,
4153
4154         _Jv_JNI_CallStaticObjectMethod,
4155         _Jv_JNI_CallStaticObjectMethodV,
4156         _Jv_JNI_CallStaticObjectMethodA,
4157         _Jv_JNI_CallStaticBooleanMethod,
4158         _Jv_JNI_CallStaticBooleanMethodV,
4159         _Jv_JNI_CallStaticBooleanMethodA,
4160         _Jv_JNI_CallStaticByteMethod,
4161         _Jv_JNI_CallStaticByteMethodV,
4162         _Jv_JNI_CallStaticByteMethodA,
4163         _Jv_JNI_CallStaticCharMethod,
4164         _Jv_JNI_CallStaticCharMethodV,
4165         _Jv_JNI_CallStaticCharMethodA,
4166         _Jv_JNI_CallStaticShortMethod,
4167         _Jv_JNI_CallStaticShortMethodV,
4168         _Jv_JNI_CallStaticShortMethodA,
4169         _Jv_JNI_CallStaticIntMethod,
4170         _Jv_JNI_CallStaticIntMethodV,
4171         _Jv_JNI_CallStaticIntMethodA,
4172         _Jv_JNI_CallStaticLongMethod,
4173         _Jv_JNI_CallStaticLongMethodV,
4174         _Jv_JNI_CallStaticLongMethodA,
4175         _Jv_JNI_CallStaticFloatMethod,
4176         _Jv_JNI_CallStaticFloatMethodV,
4177         _Jv_JNI_CallStaticFloatMethodA,
4178         _Jv_JNI_CallStaticDoubleMethod,
4179         _Jv_JNI_CallStaticDoubleMethodV,
4180         _Jv_JNI_CallStaticDoubleMethodA,
4181         _Jv_JNI_CallStaticVoidMethod,
4182         _Jv_JNI_CallStaticVoidMethodV,
4183         _Jv_JNI_CallStaticVoidMethodA,
4184
4185         _Jv_JNI_GetStaticFieldID,
4186
4187         _Jv_JNI_GetStaticObjectField,
4188         _Jv_JNI_GetStaticBooleanField,
4189         _Jv_JNI_GetStaticByteField,
4190         _Jv_JNI_GetStaticCharField,
4191         _Jv_JNI_GetStaticShortField,
4192         _Jv_JNI_GetStaticIntField,
4193         _Jv_JNI_GetStaticLongField,
4194         _Jv_JNI_GetStaticFloatField,
4195         _Jv_JNI_GetStaticDoubleField,
4196         _Jv_JNI_SetStaticObjectField,
4197         _Jv_JNI_SetStaticBooleanField,
4198         _Jv_JNI_SetStaticByteField,
4199         _Jv_JNI_SetStaticCharField,
4200         _Jv_JNI_SetStaticShortField,
4201         _Jv_JNI_SetStaticIntField,
4202         _Jv_JNI_SetStaticLongField,
4203         _Jv_JNI_SetStaticFloatField,
4204         _Jv_JNI_SetStaticDoubleField,
4205
4206         _Jv_JNI_NewString,
4207         _Jv_JNI_GetStringLength,
4208         jni_GetStringChars,
4209         _Jv_JNI_ReleaseStringChars,
4210
4211         _Jv_JNI_NewStringUTF,
4212         _Jv_JNI_GetStringUTFLength,
4213         _Jv_JNI_GetStringUTFChars,
4214         _Jv_JNI_ReleaseStringUTFChars,
4215
4216         _Jv_JNI_GetArrayLength,
4217
4218         _Jv_JNI_NewObjectArray,
4219         _Jv_JNI_GetObjectArrayElement,
4220         _Jv_JNI_SetObjectArrayElement,
4221
4222         _Jv_JNI_NewBooleanArray,
4223         _Jv_JNI_NewByteArray,
4224         _Jv_JNI_NewCharArray,
4225         _Jv_JNI_NewShortArray,
4226         _Jv_JNI_NewIntArray,
4227         _Jv_JNI_NewLongArray,
4228         _Jv_JNI_NewFloatArray,
4229         _Jv_JNI_NewDoubleArray,
4230
4231         _Jv_JNI_GetBooleanArrayElements,
4232         _Jv_JNI_GetByteArrayElements,
4233         _Jv_JNI_GetCharArrayElements,
4234         _Jv_JNI_GetShortArrayElements,
4235         _Jv_JNI_GetIntArrayElements,
4236         _Jv_JNI_GetLongArrayElements,
4237         _Jv_JNI_GetFloatArrayElements,
4238         _Jv_JNI_GetDoubleArrayElements,
4239
4240         _Jv_JNI_ReleaseBooleanArrayElements,
4241         _Jv_JNI_ReleaseByteArrayElements,
4242         _Jv_JNI_ReleaseCharArrayElements,
4243         _Jv_JNI_ReleaseShortArrayElements,
4244         _Jv_JNI_ReleaseIntArrayElements,
4245         _Jv_JNI_ReleaseLongArrayElements,
4246         _Jv_JNI_ReleaseFloatArrayElements,
4247         _Jv_JNI_ReleaseDoubleArrayElements,
4248
4249         _Jv_JNI_GetBooleanArrayRegion,
4250         _Jv_JNI_GetByteArrayRegion,
4251         _Jv_JNI_GetCharArrayRegion,
4252         _Jv_JNI_GetShortArrayRegion,
4253         _Jv_JNI_GetIntArrayRegion,
4254         _Jv_JNI_GetLongArrayRegion,
4255         _Jv_JNI_GetFloatArrayRegion,
4256         _Jv_JNI_GetDoubleArrayRegion,
4257         _Jv_JNI_SetBooleanArrayRegion,
4258         _Jv_JNI_SetByteArrayRegion,
4259         _Jv_JNI_SetCharArrayRegion,
4260         _Jv_JNI_SetShortArrayRegion,
4261         _Jv_JNI_SetIntArrayRegion,
4262         _Jv_JNI_SetLongArrayRegion,
4263         _Jv_JNI_SetFloatArrayRegion,
4264         _Jv_JNI_SetDoubleArrayRegion,
4265
4266         _Jv_JNI_RegisterNatives,
4267         _Jv_JNI_UnregisterNatives,
4268
4269         _Jv_JNI_MonitorEnter,
4270         _Jv_JNI_MonitorExit,
4271
4272         _Jv_JNI_GetJavaVM,
4273
4274         /* New JNI 1.2 functions. */
4275
4276         _Jv_JNI_GetStringRegion,
4277         _Jv_JNI_GetStringUTFRegion,
4278
4279         jni_GetPrimitiveArrayCritical,
4280         jni_ReleasePrimitiveArrayCritical,
4281
4282         _Jv_JNI_GetStringCritical,
4283         _Jv_JNI_ReleaseStringCritical,
4284
4285         _Jv_JNI_NewWeakGlobalRef,
4286         _Jv_JNI_DeleteWeakGlobalRef,
4287
4288         _Jv_JNI_ExceptionCheck,
4289
4290         /* New JNI 1.4 functions. */
4291
4292         jni_NewDirectByteBuffer,
4293         _Jv_JNI_GetDirectBufferAddress,
4294         _Jv_JNI_GetDirectBufferCapacity,
4295
4296         /* New JNI 1.6 functions. */
4297
4298         jni_GetObjectRefType
4299 };
4300
4301
4302 /* Invocation API Functions ***************************************************/
4303
4304 /* JNI_GetDefaultJavaVMInitArgs ************************************************
4305
4306    Returns a default configuration for the Java VM.
4307
4308 *******************************************************************************/
4309
4310 jint JNI_GetDefaultJavaVMInitArgs(void *vm_args)
4311 {
4312         JavaVMInitArgs *_vm_args;
4313
4314         _vm_args = (JavaVMInitArgs *) vm_args;
4315
4316         /* GNU classpath currently supports JNI 1.2 */
4317
4318         switch (_vm_args->version) {
4319     case JNI_VERSION_1_1:
4320                 _vm_args->version = JNI_VERSION_1_1;
4321                 break;
4322
4323     case JNI_VERSION_1_2:
4324     case JNI_VERSION_1_4:
4325                 _vm_args->ignoreUnrecognized = JNI_FALSE;
4326                 _vm_args->options = NULL;
4327                 _vm_args->nOptions = 0;
4328                 break;
4329
4330     default:
4331                 return -1;
4332         }
4333
4334         return 0;
4335 }
4336
4337
4338 /* JNI_GetCreatedJavaVMs *******************************************************
4339
4340    Returns all Java VMs that have been created. Pointers to VMs are written in
4341    the buffer vmBuf in the order they are created. At most bufLen number of
4342    entries will be written. The total number of created VMs is returned in
4343    *nVMs.
4344
4345 *******************************************************************************/
4346
4347 jint JNI_GetCreatedJavaVMs(JavaVM **vmBuf, jsize bufLen, jsize *nVMs)
4348 {
4349         TRACEJNICALLS(("JNI_GetCreatedJavaVMs(vmBuf=%p, jsize=%d, jsize=%p)", vmBuf, bufLen, nVMs));
4350
4351         if (bufLen <= 0)
4352                 return JNI_ERR;
4353
4354         // We currently only support 1 VM running.
4355
4356         vmBuf[0] = vm->get_javavm();
4357         *nVMs    = 1;
4358
4359     return JNI_OK;
4360 }
4361
4362
4363 /* JNI_CreateJavaVM ************************************************************
4364
4365    Loads and initializes a Java VM. The current thread becomes the main thread.
4366    Sets the env argument to the JNI interface pointer of the main thread.
4367
4368 *******************************************************************************/
4369
4370 jint JNI_CreateJavaVM(JavaVM **p_vm, void **p_env, void *vm_args)
4371 {
4372         TRACEJNICALLS(("JNI_CreateJavaVM(p_vm=%p, p_env=%p, vm_args=%p)", p_vm, p_env, vm_args));
4373
4374         /* actually create the JVM */
4375
4376         if (!VM_create(p_vm, p_env, vm_args))
4377                 return JNI_ERR;
4378
4379         return JNI_OK;
4380 }
4381
4382 } // extern "C"
4383
4384
4385 /*
4386  * These are local overrides for various environment variables in Emacs.
4387  * Please do not remove this and leave it at the end of the file, where
4388  * Emacs will automagically detect them.
4389  * ---------------------------------------------------------------------
4390  * Local variables:
4391  * mode: c
4392  * indent-tabs-mode: t
4393  * c-basic-offset: 4
4394  * tab-width: 4
4395  * End:
4396  * vim:noexpandtab:sw=4:ts=4:
4397  */