src/native/native.c

   1 /* src/native/native.c - table of native functions
   2
   3    Copyright (C) 1996-2005, 2006, 2007 R. Grafl, A. Krall, C. Kruegel,
   4    C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
   5    E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
   6    J. Wenninger, Institut f. Computersprachen - TU Wien
   7
   8    This file is part of CACAO.
   9
  10    This program is free software; you can redistribute it and/or
  11    modify it under the terms of the GNU General Public License as
  12    published by the Free Software Foundation; either version 2, or (at
  13    your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful, but
  16    WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18    General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  23    02110-1301, USA.
  24
  25    $Id: native.c 7393 2007-02-23 20:28:35Z michi $
  26
  27 */
  28
  29
  30 #include "config.h"
  31
  32 #include <assert.h>
  33 #include <ctype.h>
  34
  35 #if !defined(WITH_STATIC_CLASSPATH)
  36 # include <ltdl.h>
  37 #endif
  38
  39 #include "vm/types.h"
  40
  41 #include "mm/memory.h"
  42 #include "native/jni.h"
  43 #include "native/native.h"
  44 #include "native/include/java_lang_String.h"
  45 #include "native/include/java_lang_Throwable.h"
  46
  47 #if defined(ENABLE_THREADS)
  48 # include "threads/native/lock.h"
  49 #else
  50 # include "threads/none/lock.h"
  51 #endif
  52
  53 #include "toolbox/hashtable.h"
  54 #include "toolbox/logging.h"
  55
  56 #include "vm/builtin.h"
  57 #include "vm/exceptions.h"
  58 #include "vm/global.h"
  59 #include "vm/stringlocal.h"
  60 #include "vm/vm.h"
  61
  62 #include "vm/jit/asmpart.h"
  63 #include "vm/jit/jit.h"
  64
  65 #include "vmcore/loader.h"
  66 #include "vmcore/options.h"
  67 #include "vmcore/resolve.h"
  68
  69 #if defined(ENABLE_JVMTI)
  70 #include "native/jvmti/cacaodbg.h"
  71 #endif
  72
  73
  74 /* include table of native functions ******************************************/
  75
  76 #if defined(ENABLE_JAVASE)
  77
  78 #include "native/include/java_io_InputStream.h"
  79 #include "native/include/java_io_PrintStream.h"
  80
  81 #include "native/include/java_lang_Cloneable.h"
  82 #include "native/include/java_util_Properties.h"
  83
  84 #include "native/include/java_lang_Object.h"
  85
  86 #include "native/include/gnu_classpath_VMStackWalker.h"
  87 #include "native/include/gnu_classpath_VMSystemProperties.h"
  88 #include "native/include/gnu_java_lang_management_VMClassLoadingMXBeanImpl.h"
  89 #include "native/include/gnu_java_lang_management_VMMemoryMXBeanImpl.h"
  90 #include "native/include/gnu_java_lang_management_VMRuntimeMXBeanImpl.h"
  91 #include "native/include/java_lang_VMClass.h"
  92 #include "native/include/java_security_ProtectionDomain.h"  /* required by... */
  93 #include "native/include/java_lang_VMClassLoader.h"
  94 #include "native/include/java_lang_VMObject.h"
  95 #include "native/include/java_lang_VMRuntime.h"
  96 #include "native/include/java_lang_VMString.h"
  97 #include "native/include/java_lang_VMSystem.h"
  98 #include "native/include/java_lang_VMThread.h"
  99 #include "native/include/java_lang_VMThrowable.h"
 100 #include "native/include/java_lang_management_VMManagementFactory.h"
 101 #include "native/include/java_lang_reflect_Constructor.h"
 102 #include "native/include/java_lang_reflect_Field.h"
 103 #include "native/include/java_lang_reflect_Method.h"
 104 #include "native/include/java_lang_reflect_VMProxy.h"
 105 #include "native/include/java_security_VMAccessController.h"
 106
 107 #if defined(ENABLE_JVMTI)
 108 #include "native/include/gnu_classpath_jdwp_event_EventRequest.h"
 109 #include "native/include/java_nio_ByteBuffer.h"
 110 #include "native/include/gnu_classpath_jdwp_VMVirtualMachine.h"
 111 #include "native/include/gnu_classpath_jdwp_VMFrame.h"
 112 #include "native/include/gnu_classpath_jdwp_VMMethod.h"
 113 #endif
 114
 115 #elif defined(ENABLE_JAVAME_CLDC1_1)
 116
 117 #include "native/include/com_sun_cldchi_io_ConsoleOutputStream.h"
 118 #include "native/include/java_lang_Class.h"
 119 #include "native/include/java_lang_Double.h"
 120 #include "native/include/java_lang_Float.h"
 121 #include "native/include/java_lang_Math.h"
 122 #include "native/include/java_lang_Runtime.h"
 123 #include "native/include/java_lang_System.h"
 124 #include "native/include/java_lang_Thread.h"
 125
 126 #endif
 127
 128 #if defined(WITH_STATIC_CLASSPATH)
 129
 130 /* these are required to prevent compiler warnings */
 131
 132 #include "native/include/java_net_DatagramPacket.h"
 133 #include "native/include/java_net_InetAddress.h"
 134 #include "native/include/java_net_SocketImpl.h"
 135
 136 #include "native/include/gnu_java_net_PlainDatagramSocketImpl.h"
 137 #include "native/include/gnu_java_net_PlainSocketImpl.h"
 138 #include "native/include/gnu_java_nio_PipeImpl.h"
 139 #include "native/include/gnu_java_nio_channels_FileChannelImpl.h"
 140 #include "native/include/gnu_java_nio_charset_iconv_IconvEncoder.h"
 141 #include "native/include/gnu_java_nio_charset_iconv_IconvDecoder.h"
 142 #include "native/include/java_lang_VMProcess.h"
 143 #include "native/include/java_nio_MappedByteBufferImpl.h"
 144 #include "native/include/java_nio_channels_spi_SelectorProvider.h"
 145
 146 /* now include the native table */
 147
 148 #include "native/nativetable.inc"
 149
 150 #elif !defined(ENABLE_LIBJVM)
 151
 152 /* dummynativetable ************************************************************
 153
 154    Ensure that symbols for functions implemented within CACAO are used
 155    and exported to dlopen.
 156
 157    ATTENTION: Don't make this table static!!!  Otherwise the compiler
 158    may optimize it away!
 159
 160 *******************************************************************************/
 161
 162 functionptr dummynativetable[] = {
 163 #if defined(ENABLE_JAVASE)
 164         (functionptr) Java_gnu_classpath_VMStackWalker_getClassContext,
 165         (functionptr) Java_gnu_classpath_VMStackWalker_getCallingClass,
 166         (functionptr) Java_gnu_classpath_VMStackWalker_getCallingClassLoader,
 167         (functionptr) Java_gnu_classpath_VMStackWalker_firstNonNullClassLoader,
 168
 169         (functionptr) Java_gnu_classpath_VMSystemProperties_preInit,
 170
 171         (functionptr) Java_gnu_java_lang_management_VMClassLoadingMXBeanImpl_getLoadedClassCount,
 172         (functionptr) Java_gnu_java_lang_management_VMClassLoadingMXBeanImpl_getUnloadedClassCount,
 173         (functionptr) Java_gnu_java_lang_management_VMClassLoadingMXBeanImpl_isVerbose,
 174         (functionptr) Java_gnu_java_lang_management_VMClassLoadingMXBeanImpl_setVerbose,
 175
 176         (functionptr) Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getHeapMemoryUsage,
 177         (functionptr) Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getNonHeapMemoryUsage,
 178         (functionptr) Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getObjectPendingFinalizationCount,
 179         (functionptr) Java_gnu_java_lang_management_VMMemoryMXBeanImpl_isVerbose,
 180         (functionptr) Java_gnu_java_lang_management_VMMemoryMXBeanImpl_setVerbose,
 181
 182         (functionptr) Java_gnu_java_lang_management_VMRuntimeMXBeanImpl_getInputArguments,
 183         (functionptr) Java_gnu_java_lang_management_VMRuntimeMXBeanImpl_getStartTime,
 184
 185         (functionptr) Java_java_lang_VMClass_isInstance,
 186         (functionptr) Java_java_lang_VMClass_isAssignableFrom,
 187         (functionptr) Java_java_lang_VMClass_isInterface,
 188         (functionptr) Java_java_lang_VMClass_isPrimitive,
 189         (functionptr) Java_java_lang_VMClass_getName,
 190         (functionptr) Java_java_lang_VMClass_getSuperclass,
 191         (functionptr) Java_java_lang_VMClass_getInterfaces,
 192         (functionptr) Java_java_lang_VMClass_getComponentType,
 193         (functionptr) Java_java_lang_VMClass_getModifiers,
 194         (functionptr) Java_java_lang_VMClass_getDeclaringClass,
 195         (functionptr) Java_java_lang_VMClass_getDeclaredClasses,
 196         (functionptr) Java_java_lang_VMClass_getDeclaredFields,
 197         (functionptr) Java_java_lang_VMClass_getDeclaredMethods,
 198         (functionptr) Java_java_lang_VMClass_getDeclaredConstructors,
 199         (functionptr) Java_java_lang_VMClass_getClassLoader,
 200         (functionptr) Java_java_lang_VMClass_forName,
 201         (functionptr) Java_java_lang_VMClass_isArray,
 202         (functionptr) Java_java_lang_VMClass_throwException,
 203
 204         (functionptr) Java_java_lang_VMClassLoader_defineClass,
 205         (functionptr) Java_java_lang_VMClassLoader_resolveClass,
 206         (functionptr) Java_java_lang_VMClassLoader_loadClass,
 207         (functionptr) Java_java_lang_VMClassLoader_getPrimitiveClass,
 208         (functionptr) Java_java_lang_VMClassLoader_nativeGetResources,
 209         (functionptr) Java_java_lang_VMClassLoader_findLoadedClass,
 210
 211         (functionptr) Java_java_lang_VMObject_getClass,
 212         (functionptr) Java_java_lang_VMObject_clone,
 213         (functionptr) Java_java_lang_VMObject_notify,
 214         (functionptr) Java_java_lang_VMObject_notifyAll,
 215         (functionptr) Java_java_lang_VMObject_wait,
 216
 217         (functionptr) Java_java_lang_VMRuntime_availableProcessors,
 218         (functionptr) Java_java_lang_VMRuntime_freeMemory,
 219         (functionptr) Java_java_lang_VMRuntime_totalMemory,
 220         (functionptr) Java_java_lang_VMRuntime_maxMemory,
 221         (functionptr) Java_java_lang_VMRuntime_gc,
 222         (functionptr) Java_java_lang_VMRuntime_runFinalization,
 223         (functionptr) Java_java_lang_VMRuntime_runFinalizationForExit,
 224         (functionptr) Java_java_lang_VMRuntime_traceInstructions,
 225         (functionptr) Java_java_lang_VMRuntime_traceMethodCalls,
 226         (functionptr) Java_java_lang_VMRuntime_runFinalizersOnExit,
 227         (functionptr) Java_java_lang_VMRuntime_exit,
 228         (functionptr) Java_java_lang_VMRuntime_nativeLoad,
 229         (functionptr) Java_java_lang_VMRuntime_mapLibraryName,
 230
 231         (functionptr) Java_java_lang_VMString_intern,
 232
 233         (functionptr) Java_java_lang_VMSystem_arraycopy,
 234         (functionptr) Java_java_lang_VMSystem_identityHashCode,
 235
 236         (functionptr) Java_java_lang_VMThread_start,
 237         (functionptr) Java_java_lang_VMThread_interrupt,
 238         (functionptr) Java_java_lang_VMThread_isInterrupted,
 239         (functionptr) Java_java_lang_VMThread_suspend,
 240         (functionptr) Java_java_lang_VMThread_resume,
 241         (functionptr) Java_java_lang_VMThread_nativeSetPriority,
 242         (functionptr) Java_java_lang_VMThread_nativeStop,
 243         (functionptr) Java_java_lang_VMThread_currentThread,
 244         (functionptr) Java_java_lang_VMThread_yield,
 245         (functionptr) Java_java_lang_VMThread_interrupted,
 246         (functionptr) Java_java_lang_VMThread_holdsLock,
 247
 248         (functionptr) Java_java_lang_VMThrowable_fillInStackTrace,
 249         (functionptr) Java_java_lang_VMThrowable_getStackTrace,
 250
 251         (functionptr) Java_java_lang_management_VMManagementFactory_getMemoryPoolNames,
 252         (functionptr) Java_java_lang_management_VMManagementFactory_getMemoryManagerNames,
 253         (functionptr) Java_java_lang_management_VMManagementFactory_getGarbageCollectorNames,
 254
 255         (functionptr) Java_java_lang_reflect_Constructor_getModifiersInternal,
 256         (functionptr) Java_java_lang_reflect_Constructor_constructNative,
 257
 258         (functionptr) Java_java_lang_reflect_Field_getModifiersInternal,
 259         (functionptr) Java_java_lang_reflect_Field_getType,
 260         (functionptr) Java_java_lang_reflect_Field_get,
 261         (functionptr) Java_java_lang_reflect_Field_getBoolean,
 262         (functionptr) Java_java_lang_reflect_Field_getByte,
 263         (functionptr) Java_java_lang_reflect_Field_getChar,
 264         (functionptr) Java_java_lang_reflect_Field_getShort,
 265         (functionptr) Java_java_lang_reflect_Field_getInt,
 266         (functionptr) Java_java_lang_reflect_Field_getLong,
 267         (functionptr) Java_java_lang_reflect_Field_getFloat,
 268         (functionptr) Java_java_lang_reflect_Field_getDouble,
 269         (functionptr) Java_java_lang_reflect_Field_set,
 270         (functionptr) Java_java_lang_reflect_Field_setBoolean,
 271         (functionptr) Java_java_lang_reflect_Field_setByte,
 272         (functionptr) Java_java_lang_reflect_Field_setChar,
 273         (functionptr) Java_java_lang_reflect_Field_setShort,
 274         (functionptr) Java_java_lang_reflect_Field_setInt,
 275         (functionptr) Java_java_lang_reflect_Field_setLong,
 276         (functionptr) Java_java_lang_reflect_Field_setFloat,
 277         (functionptr) Java_java_lang_reflect_Field_setDouble,
 278
 279         (functionptr) Java_java_lang_reflect_Method_getModifiersInternal,
 280         (functionptr) Java_java_lang_reflect_Method_getReturnType,
 281         (functionptr) Java_java_lang_reflect_Method_getParameterTypes,
 282         (functionptr) Java_java_lang_reflect_Method_getExceptionTypes,
 283         (functionptr) Java_java_lang_reflect_Method_invokeNative,
 284
 285         (functionptr) Java_java_lang_reflect_VMProxy_getProxyClass,
 286         (functionptr) Java_java_lang_reflect_VMProxy_getProxyData,
 287         (functionptr) Java_java_lang_reflect_VMProxy_generateProxyClass,
 288
 289         (functionptr) Java_java_security_VMAccessController_getStack,
 290
 291 #if defined(ENABLE_JVMTI)
 292         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_suspendThread,
 293         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_resumeThread,
 294         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_getSuspendCount,
 295         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_getAllLoadedClassesCount,
 296         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_getClassStatus,
 297         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_getAllClassMethods,
 298         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_getClassMethod,
 299         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_getFrames,
 300         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_getFrame,
 301         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_getFrameCount,
 302         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_getThreadStatus,
 303         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_getLoadRequests,
 304         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_executeMethod,
 305         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_getSourceFile,
 306         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_registerEvent,
 307         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_unregisterEvent,
 308         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_clearEvents,
 309         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_getAllLoadedClasses,
 310         (functionptr) Java_gnu_classpath_jdwp_VMFrame_setValue,
 311         (functionptr) Java_gnu_classpath_jdwp_VMFrame_getValue,
 312         (functionptr) Java_gnu_classpath_jdwp_VMMethod_getName,
 313         (functionptr) Java_gnu_classpath_jdwp_VMMethod_getSignature,
 314         (functionptr) Java_gnu_classpath_jdwp_VMMethod_getModifiers,
 315         (functionptr) Java_gnu_classpath_jdwp_VMMethod_getLineTable,
 316         (functionptr) Java_gnu_classpath_jdwp_VMMethod_getVariableTable
 317 #endif
 318
 319 #elif defined(ENABLE_JAVAME_CLDC1_1)
 320         (functionptr) Java_com_sun_cldc_io_ResourceInputStream_open,
 321
 322         (functionptr) Java_com_sun_cldc_io_j2me_socket_Protocol_open0,
 323         (functionptr) Java_com_sun_cldc_io_j2me_socket_Protocol_readBuf,
 324         (functionptr) Java_com_sun_cldc_io_j2me_socket_Protocol_writeByte,
 325
 326         (functionptr) Java_com_sun_cldchi_io_ConsoleOutputStream_write,
 327
 328         (functionptr) Java_java_lang_Class_forName,
 329         (functionptr) Java_java_lang_Class_newInstance,
 330         (functionptr) Java_java_lang_Class_isInstance,
 331         (functionptr) Java_java_lang_Class_isAssignableFrom,
 332         (functionptr) Java_java_lang_Class_isInterface,
 333         (functionptr) Java_java_lang_Class_isArray,
 334         (functionptr) Java_java_lang_Class_getName,
 335
 336         (functionptr) Java_java_lang_Double_doubleToLongBits,
 337
 338         (functionptr) Java_java_lang_Float_floatToIntBits,
 339
 340         (functionptr) Java_java_lang_Math_ceil,
 341         (functionptr) Java_java_lang_Math_cos,
 342         (functionptr) Java_java_lang_Math_floor,
 343         (functionptr) Java_java_lang_Math_sin,
 344         (functionptr) Java_java_lang_Math_sqrt,
 345         (functionptr) Java_java_lang_Math_tan,
 346
 347         (functionptr) Java_java_lang_Object_hashCode,
 348         (functionptr) Java_java_lang_Object_notify,
 349         (functionptr) Java_java_lang_Object_wait,
 350
 351         (functionptr) Java_java_lang_Runtime_exitInternal,
 352         (functionptr) Java_java_lang_Runtime_freeMemory,
 353         (functionptr) Java_java_lang_Runtime_totalMemory,
 354         (functionptr) Java_java_lang_Runtime_gc,
 355
 356         (functionptr) Java_java_lang_String_hashCode,
 357         (functionptr) Java_java_lang_String_indexOf__I,
 358         (functionptr) Java_java_lang_String_indexOf__II,
 359         (functionptr) Java_java_lang_String_lastIndexOf__II,
 360         (functionptr) Java_java_lang_String_intern,
 361
 362         (functionptr) Java_java_lang_System_getProperty0,
 363
 364         (functionptr) Java_java_lang_Thread_currentThread,
 365         (functionptr) Java_java_lang_Thread_setPriority0,
 366         (functionptr) Java_java_lang_Thread_start0,
 367         (functionptr) Java_java_lang_Thread_yield,
 368
 369         (functionptr) Java_java_lang_Throwable_printStackTrace,
 370         (functionptr) Java_java_lang_Throwable_fillInStackTrace
 371 #endif
 372 };
 373
 374 #endif /* defined(ENABLE_LIBJVM) */
 375
 376
 377 /* tables for methods *********************************************************/
 378
 379 #if defined(WITH_STATIC_CLASSPATH)
 380 #define NATIVETABLESIZE  (sizeof(nativetable)/sizeof(struct nativeref))
 381
 382 /* table for fast string comparison */
 383 static nativecompref nativecomptable[NATIVETABLESIZE];
 384
 385 /* string comparsion table initialized */
 386 static bool nativecompdone = false;
 387 #endif
 388
 389
 390 /* global variables ***********************************************************/
 391
 392 #if !defined(WITH_STATIC_CLASSPATH)
 393 static hashtable *hashtable_library;
 394 static lt_dlhandle mainhandle;
 395 #endif
 396
 397
 398 /* native_init *****************************************************************
 399
 400    Initializes the native subsystem.
 401
 402 *******************************************************************************/
 403
 404 bool native_init(void)
 405 {
 406 #if !defined(WITH_STATIC_CLASSPATH)
 407         /* initialize libltdl */
 408
 409         if (lt_dlinit())
 410                 vm_abort("native_init: lt_dlinit failed: %s\n", lt_dlerror());
 411
 412         /* Get the handle for the main program or for the libjvm.so,
 413            depends on the configuration. */
 414
 415 # if defined(ENABLE_LIBJVM)
 416         /* First try to open where dlopen searches, e.g. LD_LIBRARY_PATH.
 417            If not found, try the absolute path. */
 418
 419         if (!(mainhandle = lt_dlopenext("libjvm")))
 420                 if (!(mainhandle = lt_dlopenext(cacao_libjvm)))
 421                         vm_abort("native_init: lt_dlopenext failed: %s\n", lt_dlerror());
 422 # else
 423         if (!(mainhandle = lt_dlopen(NULL)))
 424                 vm_abort("native_init: lt_dlopen failed: %s\n", lt_dlerror());
 425 # endif
 426
 427         /* initialize library hashtable, 10 entries should be enough */
 428
 429         hashtable_library = NEW(hashtable);
 430
 431         hashtable_create(hashtable_library, 10);
 432 #endif
 433
 434         /* everything's ok */
 435
 436         return true;
 437 }
 438
 439
 440 /* native_hashtable_library_add ************************************************
 441
 442    Adds an entry to the native library hashtable.
 443
 444 *******************************************************************************/
 445
 446 #if !defined(WITH_STATIC_CLASSPATH)
 447 void native_hashtable_library_add(utf *filename, java_objectheader *loader,
 448                                                                   lt_dlhandle handle)
 449 {
 450         hashtable_classloader_entry    *cle;
 451         hashtable_library_loader_entry *le;
 452         hashtable_library_name_entry   *ne; /* library name                       */
 453         u4   key;                           /* hashkey                            */
 454         u4   slot;                          /* slot in hashtable                  */
 455
 456         LOCK_MONITOR_ENTER(hashtable_library->header);
 457
 458         /* insert loader into the classloader hashtable */
 459
 460         cle = loader_hashtable_classloader_add(loader);
 461
 462         /* normally addresses are aligned to 4, 8 or 16 bytes */
 463
 464         key  = ((u4) (ptrint) cle) >> 4;        /* align to 16-byte boundaries    */
 465         slot = key & (hashtable_library->size - 1);
 466         le   = hashtable_library->ptr[slot];
 467
 468         /* search external hash chain for the entry */
 469
 470         while (le) {
 471                 if (le->cle == cle)
 472                         break;
 473
 474                 le = le->hashlink;                  /* next element in external chain */
 475         }
 476
 477         /* no loader found? create a new entry */
 478
 479         if (le == NULL) {
 480                 le = NEW(hashtable_library_loader_entry);
 481
 482                 le->cle   = cle;
 483                 le->namelink = NULL;
 484
 485                 /* insert entry into hashtable */
 486
 487                 le->hashlink =
 488                         (hashtable_library_loader_entry *) hashtable_library->ptr[slot];
 489                 hashtable_library->ptr[slot] = le;
 490
 491                 /* update number of hashtable-entries */
 492
 493                 hashtable_library->entries++;
 494         }
 495
 496
 497         /* search for library name */
 498
 499         ne = le->namelink;
 500
 501         while (ne) {
 502                 if (ne->name == filename) {
 503                         LOCK_MONITOR_EXIT(hashtable_library->header);
 504
 505                         return;
 506                 }
 507
 508                 ne = ne->hashlink;                  /* next element in external chain */
 509         }
 510
 511         /* not found? add the library name to the classloader */
 512
 513         ne = NEW(hashtable_library_name_entry);
 514
 515         ne->name   = filename;
 516         ne->handle = handle;
 517
 518         /* insert entry into external chain */
 519
 520         ne->hashlink = le->namelink;
 521         le->namelink = ne;
 522
 523         LOCK_MONITOR_EXIT(hashtable_library->header);
 524 }
 525 #endif /* !defined(WITH_STATIC_CLASSPATH) */
 526
 527
 528 /* native_hashtable_library_find ***********************************************
 529
 530    Find an entry in the native library hashtable.
 531
 532 *******************************************************************************/
 533
 534 #if !defined(WITH_STATIC_CLASSPATH)
 535 hashtable_library_name_entry *native_hashtable_library_find(utf *filename,
 536                                                                                                                         java_objectheader *loader)
 537 {
 538         hashtable_classloader_entry    *cle;
 539         hashtable_library_loader_entry *le;
 540         hashtable_library_name_entry   *ne; /* library name                       */
 541         u4   key;                           /* hashkey                            */
 542         u4   slot;                          /* slot in hashtable                  */
 543
 544         /* search loader in the classloader hashtable */
 545
 546         cle = loader_hashtable_classloader_find(loader);
 547
 548         if (!cle)
 549                 return NULL;
 550
 551         /* normally addresses are aligned to 4, 8 or 16 bytes */
 552
 553         key  = ((u4) (ptrint) cle) >> 4;        /* align to 16-byte boundaries    */
 554         slot = key & (hashtable_library->size - 1);
 555         le   = hashtable_library->ptr[slot];
 556
 557         /* search external hash chain for the entry */
 558
 559         while (le) {
 560                 if (le->cle == cle)
 561                         break;
 562
 563                 le = le->hashlink;                  /* next element in external chain */
 564         }
 565
 566         /* no loader found? return NULL */
 567
 568         if (!le)
 569                 return NULL;
 570
 571         /* search for library name */
 572
 573         ne = le->namelink;
 574
 575         while (ne) {
 576                 if (ne->name == filename)
 577                         return ne;
 578
 579                 ne = ne->hashlink;                  /* next element in external chain */
 580         }
 581
 582         /* return entry, if no entry was found, ne is NULL */
 583
 584         return ne;
 585 }
 586 #endif /* !defined(WITH_STATIC_CLASSPATH) */
 587
 588
 589 /* native_findfunction *********************************************************
 590
 591    Looks up a method (must have the same class name, method name,
 592    descriptor and 'static'ness) and returns a function pointer to it.
 593    Returns: function pointer or NULL (if there is no such method)
 594
 595    Remark: For faster operation, the names/descriptors are converted
 596    from C strings to Unicode the first time this function is called.
 597
 598 *******************************************************************************/
 599
 600 #if defined(WITH_STATIC_CLASSPATH)
 601 functionptr native_findfunction(utf *cname, utf *mname, utf *desc,
 602                                                                 bool isstatic)
 603 {
 604         /* entry of table for fast string comparison */
 605         struct nativecompref *n;
 606         s4 i;
 607
 608         isstatic = isstatic ? true : false;
 609
 610         if (!nativecompdone) {
 611                 for (i = 0; i < NATIVETABLESIZE; i++) {
 612                         nativecomptable[i].classname  =
 613                                 utf_new_char(nativetable[i].classname);
 614
 615                         nativecomptable[i].methodname =
 616                                 utf_new_char(nativetable[i].methodname);
 617
 618                         nativecomptable[i].descriptor =
 619                                 utf_new_char(nativetable[i].descriptor);
 620
 621                         nativecomptable[i].isstatic   = nativetable[i].isstatic;
 622                         nativecomptable[i].func       = nativetable[i].func;
 623                 }
 624
 625                 nativecompdone = true;
 626         }
 627
 628         for (i = 0; i < NATIVETABLESIZE; i++) {
 629                 n = &(nativecomptable[i]);
 630
 631                 if (cname == n->classname && mname == n->methodname &&
 632                     desc == n->descriptor && isstatic == n->isstatic)
 633                         return n->func;
 634         }
 635
 636         /* no function was found, throw exception */
 637
 638         *exceptionptr =
 639                         new_exception_utfmessage(string_java_lang_UnsatisfiedLinkError,
 640                                                                          mname);
 641
 642         return NULL;
 643 }
 644 #endif /* defined(WITH_STATIC_CLASSPATH) */
 645
 646
 647 /* native_make_overloaded_function *********************************************
 648
 649    XXX
 650
 651 *******************************************************************************/
 652
 653 #if !defined(WITH_STATIC_CLASSPATH)
 654 static char *native_make_overloaded_function(char *name, utf *desc)
 655 {
 656         char *newname;
 657         s4    namelen;
 658         char *utf_ptr;
 659         u2    c;
 660         s4    i;
 661
 662         utf_ptr = desc->text;
 663         namelen = strlen(name) + strlen("__") + strlen("0");
 664
 665         /* calculate additional length */
 666
 667         while ((c = utf_nextu2(&utf_ptr)) != ')') {
 668                 switch (c) {
 669                 case 'Z':
 670                 case 'B':
 671                 case 'C':
 672                 case 'S':
 673                 case 'I':
 674                 case 'J':
 675                 case 'F':
 676                 case 'D':
 677                         namelen++;
 678                         break;
 679                 case '[':
 680                         namelen += 2;
 681                         break;
 682                 case 'L':
 683                         namelen++;
 684                         while (utf_nextu2(&utf_ptr) != ';')
 685                                 namelen++;
 686                         namelen += 2;
 687                         break;
 688                 case '(':
 689                         break;
 690                 default:
 691                         assert(0);
 692                 }
 693         }
 694
 695
 696         /* reallocate memory */
 697
 698         i = strlen(name);
 699
 700         newname = DMNEW(char, namelen);
 701         MCOPY(newname, name, char, i);
 702
 703         utf_ptr = desc->text;
 704
 705         newname[i++] = '_';
 706         newname[i++] = '_';
 707
 708         while ((c = utf_nextu2(&utf_ptr)) != ')') {
 709                 switch (c) {
 710                 case 'Z':
 711                 case 'B':
 712                 case 'C':
 713                 case 'S':
 714                 case 'J':
 715                 case 'I':
 716                 case 'F':
 717                 case 'D':
 718                         newname[i++] = c;
 719                         break;
 720                 case '[':
 721                         newname[i++] = '_';
 722                         newname[i++] = '3';
 723                         break;
 724                 case 'L':
 725                         newname[i++] = 'L';
 726                         while ((c = utf_nextu2(&utf_ptr)) != ';')
 727                                 if (((c >= 'a') && (c <= 'z')) ||
 728                                         ((c >= 'A') && (c <= 'Z')) ||
 729                                         ((c >= '0') && (c <= '9')))
 730                                         newname[i++] = c;
 731                                 else
 732                                         newname[i++] = '_';
 733                         newname[i++] = '_';
 734                         newname[i++] = '2';
 735                         break;
 736                 case '(':
 737                         break;
 738                 default:
 739                         assert(0);
 740                 }
 741         }
 742
 743         /* close string */
 744
 745         newname[i] = '\0';
 746
 747         return newname;
 748 }
 749
 750
 751 /* native_insert_char **********************************************************
 752
 753    Inserts the passed UTF character into the native method name.  If
 754    necessary it is escaped properly.
 755
 756 *******************************************************************************/
 757
 758 static s4 native_insert_char(char *name, u4 pos, u2 c)
 759 {
 760         s4 val;
 761         s4 i;
 762
 763         switch (c) {
 764         case '/':
 765         case '.':
 766                 /* replace '/' or '.' with '_' */
 767                 name[pos] = '_';
 768                 break;
 769
 770         case '_':
 771                 /* escape sequence for '_' is '_1' */
 772                 name[pos]   = '_';
 773                 name[++pos] = '1';
 774                 break;
 775
 776         case ';':
 777                 /* escape sequence for ';' is '_2' */
 778                 name[pos]   = '_';
 779                 name[++pos] = '2';
 780                 break;
 781
 782         case '[':
 783                 /* escape sequence for '[' is '_1' */
 784                 name[pos]   = '_';
 785                 name[++pos] = '3';
 786                 break;
 787
 788         default:
 789                 if (isalnum(c))
 790                         name[pos] = c;
 791                 else {
 792                         /* unicode character */
 793                         name[pos]   = '_';
 794                         name[++pos] = '0';
 795
 796                         for (i = 0; i < 4; ++i) {
 797                                 val = c & 0x0f;
 798                                 name[pos + 4 - i] = (val > 10) ? ('a' + val - 10) : ('0' + val);
 799                                 c >>= 4;
 800                         }
 801
 802                         pos += 4;
 803                 }
 804                 break;
 805         }
 806
 807         /* return the new buffer index */
 808
 809         return pos;
 810 }
 811
 812
 813 /* native_resolve_function *****************************************************
 814
 815    Resolves a native function, maybe from a dynamic library.
 816
 817 *******************************************************************************/
 818
 819 functionptr native_resolve_function(methodinfo *m)
 820 {
 821         lt_ptr                          sym;
 822         char                           *name;
 823         char                           *newname;
 824         s4                              namelen;
 825         char                           *utf_ptr;
 826         char                           *utf_endptr;
 827         u2                              c;
 828         u4                              pos;
 829         s4                              dumpsize;
 830         hashtable_library_loader_entry *le;
 831         hashtable_library_name_entry   *ne;
 832         u4                              key;    /* hashkey                        */
 833         u4                              slot;   /* slot in hashtable              */
 834
 835         /* verbose output */
 836
 837         if (opt_verbosejni) {
 838                 printf("[Dynamic-linking native method ");
 839                 utf_display_printable_ascii_classname(m->class->name);
 840                 printf(".");
 841                 utf_display_printable_ascii(m->name);
 842                 printf(" ... ");
 843         }
 844
 845         /* Calculate length of native function name.  We multiply the
 846            class and method name length by 6 as this is the maxium
 847            escape-sequence that can be generated (unicode). */
 848
 849         namelen = strlen("Java_") +
 850                 utf_get_number_of_u2s(m->class->name) * 6 +
 851                 strlen("_") +
 852                 utf_get_number_of_u2s(m->name) * 6 +
 853                 strlen("0");
 854
 855         /* allocate memory */
 856
 857         dumpsize = dump_size();
 858
 859         name = DMNEW(char, namelen);
 860
 861         /* generate name of native functions */
 862
 863         strcpy(name, "Java_");
 864         pos = strlen("Java_");
 865
 866         utf_ptr    = m->class->name->text;
 867         utf_endptr = UTF_END(m->class->name);
 868
 869         for (; utf_ptr < utf_endptr; utf_ptr++, pos++) {
 870                 c   = *utf_ptr;
 871                 pos = native_insert_char(name, pos, c);
 872         }
 873
 874         /* seperator between class and method */
 875
 876         name[pos++] = '_';
 877
 878         utf_ptr    = m->name->text;
 879         utf_endptr = UTF_END(m->name);
 880
 881         for (; utf_ptr < utf_endptr; utf_ptr++, pos++) {
 882                 c   = *utf_ptr;
 883                 pos = native_insert_char(name, pos, c);
 884         }
 885
 886         /* close string */
 887
 888         name[pos] = '\0';
 889
 890         /* check for an buffer overflow */
 891
 892         assert(pos <= namelen);
 893
 894         /* generate overloaded function (having the types in it's name)           */
 895
 896         newname = native_make_overloaded_function(name, m->descriptor);
 897
 898         /* check the library hash entries of the classloader of the
 899            methods's class  */
 900
 901         sym = NULL;
 902
 903         /* normally addresses are aligned to 4, 8 or 16 bytes */
 904
 905 #if 0
 906         key  = ((u4) (ptrint) m->class->classloader) >> 4;    /* align to 16-byte */
 907 #else
 908         /* XXX this is only a hack until classinfo->classloade is of type cle!!! */
 909         key  = ((u4) (ptrint) loader_hashtable_classloader_find(m->class->classloader)) >> 4;
 910 #endif
 911         slot = key & (hashtable_library->size - 1);
 912         le   = hashtable_library->ptr[slot];
 913
 914         /* iterate through loaders in this hash slot */
 915
 916         while ((le != NULL) && (sym == NULL)) {
 917                 /* iterate through names in this loader */
 918
 919                 ne = le->namelink;
 920
 921                 while ((ne != NULL) && (sym == NULL)) {
 922                         sym = lt_dlsym(ne->handle, name);
 923
 924                         if (sym == NULL)
 925                                 sym = lt_dlsym(ne->handle, newname);
 926
 927                         ne = ne->hashlink;
 928                 }
 929
 930                 le = le->hashlink;
 931         }
 932
 933         if (sym != NULL)
 934                 if (opt_verbosejni)
 935                         printf("JNI ]\n");
 936
 937
 938         /* If not found, try to find the native function symbol in the
 939            main program. */
 940
 941         if (sym == NULL) {
 942                 sym = lt_dlsym(mainhandle, name);
 943
 944                 if (sym == NULL)
 945                         sym = lt_dlsym(mainhandle, newname);
 946
 947                 if (sym != NULL)
 948                         if (opt_verbosejni)
 949                                 printf("internal ]\n");
 950         }
 951
 952
 953 #if defined(ENABLE_JVMTI)
 954         /* fire Native Method Bind event */
 955         if (jvmti) jvmti_NativeMethodBind(m, sym, &sym);
 956 #endif
 957
 958         /* no symbol found? throw exception */
 959
 960         if (sym == NULL) {
 961                 if (opt_verbosejni)
 962                         printf("failed ]\n");
 963
 964                 exceptions_throw_unsatisfiedlinkerror(m->name);
 965         }
 966
 967         /* release memory */
 968
 969         dump_release(dumpsize);
 970
 971         return (functionptr) (ptrint) sym;
 972 }
 973 #endif /* !defined(WITH_STATIC_CLASSPATH) */
 974
 975
 976 /* native_new_and_init *********************************************************
 977
 978    Creates a new object on the heap and calls the initializer.
 979    Returns the object pointer or NULL if memory is exhausted.
 980
 981 *******************************************************************************/
 982
 983 java_objectheader *native_new_and_init(classinfo *c)
 984 {
 985         methodinfo *m;
 986         java_objectheader *o;
 987
 988         if (c == NULL)
 989                 vm_abort("native_new_and_init: c == NULL");
 990
 991         /* create object */
 992
 993         o = builtin_new(c);
 994
 995         if (o == NULL)
 996                 return NULL;
 997
 998         /* try to find the initializer */
 999
1000         m = class_findmethod(c, utf_init, utf_void__void);
1001
1002         /* ATTENTION: returning the object here is ok, since the class may
1003        not have an initializer */
1004
1005         if (m == NULL)
1006                 return o;
1007
1008         /* call initializer */
1009
1010         (void) vm_call_method(m, o);
1011
1012         return o;
1013 }
1014
1015
1016 java_objectheader *native_new_and_init_string(classinfo *c, java_objectheader *s)
1017 {
1018         methodinfo        *m;
1019         java_objectheader *o;
1020
1021         if (c == NULL)
1022                 vm_abort("native_new_and_init_string: c == NULL");
1023
1024         /* create object */
1025
1026         o = builtin_new(c);
1027
1028         if (o == NULL)
1029                 return NULL;
1030
1031         /* find initializer */
1032
1033         m = class_resolveclassmethod(c,
1034                                                                  utf_init,
1035                                                                  utf_java_lang_String__void,
1036                                                                  NULL,
1037                                                                  true);
1038
1039         /* initializer not found */
1040
1041         if (m == NULL)
1042                 return NULL;
1043
1044         /* call initializer */
1045
1046         (void) vm_call_method(m, o, s);
1047
1048         return o;
1049 }
1050
1051
1052 java_objectheader *native_new_and_init_int(classinfo *c, s4 i)
1053 {
1054         methodinfo *m;
1055         java_objectheader *o;
1056
1057         if (c == NULL)
1058                 vm_abort("native_new_and_init_int: c == NULL");
1059
1060         /* create object */
1061
1062         o = builtin_new(c);
1063
1064         if (o == NULL)
1065                 return NULL;
1066
1067         /* find initializer */
1068
1069         m = class_resolveclassmethod(c, utf_init, utf_int__void, NULL, true);
1070
1071         /* initializer not found  */
1072
1073         if (m == NULL)
1074                 return NULL;
1075
1076         /* call initializer */
1077
1078         (void) vm_call_method(m, o, i);
1079
1080         return o;
1081 }
1082
1083
1084 java_objectheader *native_new_and_init_throwable(classinfo *c, java_objectheader *t)
1085 {
1086         java_objectheader *o;
1087         methodinfo        *m;
1088
1089         if (c == NULL)
1090                 vm_abort("native_new_and_init_throwable: c == NULL");
1091
1092         /* create object */
1093
1094         o = builtin_new(c);
1095
1096         if (o == NULL)
1097                 return NULL;
1098
1099         /* find initializer */
1100
1101         m = class_findmethod(c, utf_init, utf_java_lang_Throwable__void);
1102
1103         /* initializer not found */
1104
1105         if (m == NULL)
1106                 return NULL;
1107
1108         /* call initializer */
1109
1110         (void) vm_call_method(m, o, t);
1111
1112         return o;
1113 }
1114
1115
1116 /* native_class_getdeclaredannotations *****************************************
1117
1118    Implementation for
1119    java.lang.Class.getDeclaredAnnotations(Ljava/lang/Class;)[Ljava/lang/annotation/Annotation;
1120
1121 *******************************************************************************/
1122
1123 #if defined(ENABLE_JAVASE)
1124 java_objectarray *native_class_getdeclaredannotations(classinfo *c)
1125 {
1126         java_objectarray *oa;
1127         s4                count;
1128         s4                i;
1129
1130         classinfo *class_java_lang_annotation_Annotation;
1131
1132         /* create Annotation-array */
1133
1134         /* XXX should we cache that class? */
1135         if (!(class_java_lang_annotation_Annotation =
1136                   load_class_bootstrap(utf_new_char("java/lang/annotation/Annotation"))))
1137                 return NULL;
1138
1139         count = c->runtimevisibleannotationscount;
1140
1141         oa = builtin_anewarray(count, class_java_lang_annotation_Annotation);
1142
1143         if (oa == NULL)
1144                 return NULL;
1145
1146         /* fill the annotations */
1147
1148         for (i = 0; i < count; i++) {
1149         }
1150
1151         return oa;
1152 }
1153 #endif
1154
1155
1156 /* native_get_parametertypes ***************************************************
1157
1158    Use the descriptor of a method to generate a java/lang/Class array
1159    which contains the classes of the parametertypes of the method.
1160
1161 *******************************************************************************/
1162
1163 java_objectarray *native_get_parametertypes(methodinfo *m)
1164 {
1165         methoddesc       *md;
1166         typedesc         *paramtypes;
1167         s4                paramcount;
1168     java_objectarray *oa;
1169         s4                i;
1170
1171         md = m->parseddesc;
1172
1173         /* is the descriptor fully parsed? */
1174
1175         if (m->parseddesc->params == NULL)
1176                 if (!descriptor_params_from_paramtypes(md, m->flags))
1177                         return NULL;
1178
1179         paramtypes = md->paramtypes;
1180         paramcount = md->paramcount;
1181
1182         /* skip `this' pointer */
1183
1184         if (!(m->flags & ACC_STATIC)) {
1185                 paramtypes++;
1186                 paramcount--;
1187         }
1188
1189         /* create class-array */
1190
1191         oa = builtin_anewarray(paramcount, class_java_lang_Class);
1192
1193         if (oa == NULL)
1194                 return NULL;
1195
1196     /* get classes */
1197
1198         for (i = 0; i < paramcount; i++)
1199                 if (!resolve_class_from_typedesc(&paramtypes[i], true, false,
1200                                                                                  (classinfo **) &oa->data[i]))
1201                         return NULL;
1202
1203         return oa;
1204 }
1205
1206
1207 /* native_get_exceptiontypes ***************************************************
1208
1209    Get the exceptions which can be thrown by a method.
1210
1211 *******************************************************************************/
1212
1213 java_objectarray *native_get_exceptiontypes(methodinfo *m)
1214 {
1215         java_objectarray *oa;
1216         classinfo        *c;
1217         u2                i;
1218
1219         /* create class-array */
1220
1221         oa = builtin_anewarray(m->thrownexceptionscount, class_java_lang_Class);
1222
1223         if (oa == NULL)
1224                 return NULL;
1225
1226         for (i = 0; i < m->thrownexceptionscount; i++) {
1227                 if (!resolve_classref_or_classinfo(NULL, m->thrownexceptions[i],
1228                                                                                    resolveEager, true, false, &c))
1229                         return NULL;
1230
1231                 oa->data[i] = (java_objectheader *) c;
1232         }
1233
1234         return oa;
1235 }
1236
1237
1238 /*
1239  * These are local overrides for various environment variables in Emacs.
1240  * Please do not remove this and leave it at the end of the file, where
1241  * Emacs will automagically detect them.
1242  * ---------------------------------------------------------------------
1243  * Local variables:
1244  * mode: c
1245  * indent-tabs-mode: t
1246  * c-basic-offset: 4
1247  * tab-width: 4
1248  * End:
1249  */