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 7674 2007-04-05 13:27:11Z 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 "vm/resolve.h"
  68
  69 #if defined(ENABLE_JVMTI)
  70 #include "native/jvmti/cacaodbg.h"
  71 #endif
  72
  73
  74 /* include table of native functions ******************************************/
  75
  76 #if defined(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 #include "native/include/sun_misc_Unsafe.h"
 107
 108 #if defined(ENABLE_JVMTI)
 109 #include "native/include/gnu_classpath_jdwp_event_EventRequest.h"
 110 #include "native/include/java_nio_ByteBuffer.h"
 111 #include "native/include/gnu_classpath_jdwp_VMVirtualMachine.h"
 112 #include "native/include/gnu_classpath_jdwp_VMFrame.h"
 113 #include "native/include/gnu_classpath_jdwp_VMMethod.h"
 114 #endif
 115
 116 #elif defined(ENABLE_JAVAME_CLDC1_1)
 117
 118 #include "native/include/com_sun_cldchi_io_ConsoleOutputStream.h"
 119 #include "native/include/java_lang_Class.h"
 120 #include "native/include/java_lang_Double.h"
 121 #include "native/include/java_lang_Float.h"
 122 #include "native/include/java_lang_Math.h"
 123 #include "native/include/java_lang_Runtime.h"
 124 #include "native/include/java_lang_System.h"
 125 #include "native/include/java_lang_Thread.h"
 126
 127 #endif
 128
 129 #if defined(WITH_STATIC_CLASSPATH)
 130
 131 /* these are required to prevent compiler warnings */
 132
 133 #include "native/include/java_net_DatagramPacket.h"
 134 #include "native/include/java_net_InetAddress.h"
 135 #include "native/include/java_net_SocketImpl.h"
 136
 137 #include "native/include/gnu_java_net_PlainDatagramSocketImpl.h"
 138 #include "native/include/gnu_java_net_PlainSocketImpl.h"
 139 #include "native/include/gnu_java_nio_PipeImpl.h"
 140 #include "native/include/gnu_java_nio_channels_FileChannelImpl.h"
 141 #include "native/include/gnu_java_nio_charset_iconv_IconvEncoder.h"
 142 #include "native/include/gnu_java_nio_charset_iconv_IconvDecoder.h"
 143 #include "native/include/java_lang_VMProcess.h"
 144 #include "native/include/java_nio_MappedByteBufferImpl.h"
 145 #include "native/include/java_nio_channels_spi_SelectorProvider.h"
 146
 147 /* now include the native table */
 148
 149 #include "native/nativetable.inc"
 150
 151 #elif !defined(ENABLE_LIBJVM)
 152
 153 /* dummynativetable ************************************************************
 154
 155    Ensure that symbols for functions implemented within CACAO are used
 156    and exported to dlopen.
 157
 158    ATTENTION: Don't make this table static!!!  Otherwise the compiler
 159    may optimize it away!
 160
 161 *******************************************************************************/
 162
 163 functionptr dummynativetable[] = {
 164 #if defined(ENABLE_JAVASE)
 165         (functionptr) Java_gnu_classpath_VMStackWalker_getClassContext,
 166         (functionptr) Java_gnu_classpath_VMStackWalker_getCallingClass,
 167         (functionptr) Java_gnu_classpath_VMStackWalker_getCallingClassLoader,
 168         (functionptr) Java_gnu_classpath_VMStackWalker_firstNonNullClassLoader,
 169
 170         (functionptr) Java_gnu_classpath_VMSystemProperties_preInit,
 171
 172         (functionptr) Java_gnu_java_lang_management_VMClassLoadingMXBeanImpl_getLoadedClassCount,
 173         (functionptr) Java_gnu_java_lang_management_VMClassLoadingMXBeanImpl_getUnloadedClassCount,
 174         (functionptr) Java_gnu_java_lang_management_VMClassLoadingMXBeanImpl_isVerbose,
 175         (functionptr) Java_gnu_java_lang_management_VMClassLoadingMXBeanImpl_setVerbose,
 176
 177         (functionptr) Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getHeapMemoryUsage,
 178         (functionptr) Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getNonHeapMemoryUsage,
 179         (functionptr) Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getObjectPendingFinalizationCount,
 180         (functionptr) Java_gnu_java_lang_management_VMMemoryMXBeanImpl_isVerbose,
 181         (functionptr) Java_gnu_java_lang_management_VMMemoryMXBeanImpl_setVerbose,
 182
 183         (functionptr) Java_gnu_java_lang_management_VMRuntimeMXBeanImpl_getInputArguments,
 184         (functionptr) Java_gnu_java_lang_management_VMRuntimeMXBeanImpl_getStartTime,
 185
 186         (functionptr) Java_java_lang_VMClass_isInstance,
 187         (functionptr) Java_java_lang_VMClass_isAssignableFrom,
 188         (functionptr) Java_java_lang_VMClass_isInterface,
 189         (functionptr) Java_java_lang_VMClass_isPrimitive,
 190         (functionptr) Java_java_lang_VMClass_getName,
 191         (functionptr) Java_java_lang_VMClass_getSuperclass,
 192         (functionptr) Java_java_lang_VMClass_getInterfaces,
 193         (functionptr) Java_java_lang_VMClass_getComponentType,
 194         (functionptr) Java_java_lang_VMClass_getModifiers,
 195         (functionptr) Java_java_lang_VMClass_getDeclaringClass,
 196         (functionptr) Java_java_lang_VMClass_getDeclaredClasses,
 197         (functionptr) Java_java_lang_VMClass_getDeclaredFields,
 198         (functionptr) Java_java_lang_VMClass_getDeclaredMethods,
 199         (functionptr) Java_java_lang_VMClass_getDeclaredConstructors,
 200         (functionptr) Java_java_lang_VMClass_getClassLoader,
 201         (functionptr) Java_java_lang_VMClass_forName,
 202         (functionptr) Java_java_lang_VMClass_isArray,
 203         (functionptr) Java_java_lang_VMClass_throwException,
 204
 205         (functionptr) Java_java_lang_VMClassLoader_defineClass,
 206         (functionptr) Java_java_lang_VMClassLoader_resolveClass,
 207         (functionptr) Java_java_lang_VMClassLoader_loadClass,
 208         (functionptr) Java_java_lang_VMClassLoader_getPrimitiveClass,
 209         (functionptr) Java_java_lang_VMClassLoader_nativeGetResources,
 210         (functionptr) Java_java_lang_VMClassLoader_findLoadedClass,
 211
 212         (functionptr) Java_java_lang_VMObject_getClass,
 213         (functionptr) Java_java_lang_VMObject_clone,
 214         (functionptr) Java_java_lang_VMObject_notify,
 215         (functionptr) Java_java_lang_VMObject_notifyAll,
 216         (functionptr) Java_java_lang_VMObject_wait,
 217
 218         (functionptr) Java_java_lang_VMRuntime_availableProcessors,
 219         (functionptr) Java_java_lang_VMRuntime_freeMemory,
 220         (functionptr) Java_java_lang_VMRuntime_totalMemory,
 221         (functionptr) Java_java_lang_VMRuntime_maxMemory,
 222         (functionptr) Java_java_lang_VMRuntime_gc,
 223         (functionptr) Java_java_lang_VMRuntime_runFinalization,
 224         (functionptr) Java_java_lang_VMRuntime_runFinalizationForExit,
 225         (functionptr) Java_java_lang_VMRuntime_traceInstructions,
 226         (functionptr) Java_java_lang_VMRuntime_traceMethodCalls,
 227         (functionptr) Java_java_lang_VMRuntime_runFinalizersOnExit,
 228         (functionptr) Java_java_lang_VMRuntime_exit,
 229         (functionptr) Java_java_lang_VMRuntime_nativeLoad,
 230         (functionptr) Java_java_lang_VMRuntime_mapLibraryName,
 231
 232         (functionptr) Java_java_lang_VMString_intern,
 233
 234         (functionptr) Java_java_lang_VMSystem_arraycopy,
 235         (functionptr) Java_java_lang_VMSystem_identityHashCode,
 236
 237         (functionptr) Java_java_lang_VMThread_start,
 238         (functionptr) Java_java_lang_VMThread_interrupt,
 239         (functionptr) Java_java_lang_VMThread_isInterrupted,
 240         (functionptr) Java_java_lang_VMThread_suspend,
 241         (functionptr) Java_java_lang_VMThread_resume,
 242         (functionptr) Java_java_lang_VMThread_nativeSetPriority,
 243         (functionptr) Java_java_lang_VMThread_nativeStop,
 244         (functionptr) Java_java_lang_VMThread_currentThread,
 245         (functionptr) Java_java_lang_VMThread_yield,
 246         (functionptr) Java_java_lang_VMThread_interrupted,
 247         (functionptr) Java_java_lang_VMThread_holdsLock,
 248         (functionptr) Java_java_lang_VMThread_getState,
 249
 250         (functionptr) Java_java_lang_VMThrowable_fillInStackTrace,
 251         (functionptr) Java_java_lang_VMThrowable_getStackTrace,
 252
 253         (functionptr) Java_java_lang_management_VMManagementFactory_getMemoryPoolNames,
 254         (functionptr) Java_java_lang_management_VMManagementFactory_getMemoryManagerNames,
 255         (functionptr) Java_java_lang_management_VMManagementFactory_getGarbageCollectorNames,
 256
 257         (functionptr) Java_java_lang_reflect_Constructor_getModifiersInternal,
 258         (functionptr) Java_java_lang_reflect_Constructor_constructNative,
 259
 260         (functionptr) Java_java_lang_reflect_Field_getModifiersInternal,
 261         (functionptr) Java_java_lang_reflect_Field_getType,
 262         (functionptr) Java_java_lang_reflect_Field_get,
 263         (functionptr) Java_java_lang_reflect_Field_getBoolean,
 264         (functionptr) Java_java_lang_reflect_Field_getByte,
 265         (functionptr) Java_java_lang_reflect_Field_getChar,
 266         (functionptr) Java_java_lang_reflect_Field_getShort,
 267         (functionptr) Java_java_lang_reflect_Field_getInt,
 268         (functionptr) Java_java_lang_reflect_Field_getLong,
 269         (functionptr) Java_java_lang_reflect_Field_getFloat,
 270         (functionptr) Java_java_lang_reflect_Field_getDouble,
 271         (functionptr) Java_java_lang_reflect_Field_set,
 272         (functionptr) Java_java_lang_reflect_Field_setBoolean,
 273         (functionptr) Java_java_lang_reflect_Field_setByte,
 274         (functionptr) Java_java_lang_reflect_Field_setChar,
 275         (functionptr) Java_java_lang_reflect_Field_setShort,
 276         (functionptr) Java_java_lang_reflect_Field_setInt,
 277         (functionptr) Java_java_lang_reflect_Field_setLong,
 278         (functionptr) Java_java_lang_reflect_Field_setFloat,
 279         (functionptr) Java_java_lang_reflect_Field_setDouble,
 280
 281         (functionptr) Java_java_lang_reflect_Method_getModifiersInternal,
 282         (functionptr) Java_java_lang_reflect_Method_getReturnType,
 283         (functionptr) Java_java_lang_reflect_Method_getParameterTypes,
 284         (functionptr) Java_java_lang_reflect_Method_getExceptionTypes,
 285         (functionptr) Java_java_lang_reflect_Method_invokeNative,
 286
 287         (functionptr) Java_java_lang_reflect_VMProxy_getProxyClass,
 288         (functionptr) Java_java_lang_reflect_VMProxy_getProxyData,
 289         (functionptr) Java_java_lang_reflect_VMProxy_generateProxyClass,
 290
 291         (functionptr) Java_java_security_VMAccessController_getStack,
 292
 293         (functionptr) Java_sun_misc_Unsafe_objectFieldOffset,
 294         (functionptr) Java_sun_misc_Unsafe_compareAndSwapInt,
 295
 296 #if defined(ENABLE_JVMTI)
 297         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_suspendThread,
 298         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_resumeThread,
 299         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_getSuspendCount,
 300         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_getAllLoadedClassesCount,
 301         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_getClassStatus,
 302         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_getAllClassMethods,
 303         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_getClassMethod,
 304         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_getFrames,
 305         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_getFrame,
 306         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_getFrameCount,
 307         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_getThreadStatus,
 308         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_getLoadRequests,
 309         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_executeMethod,
 310         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_getSourceFile,
 311         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_registerEvent,
 312         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_unregisterEvent,
 313         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_clearEvents,
 314         (functionptr) Java_gnu_classpath_jdwp_VMVirtualMachine_getAllLoadedClasses,
 315         (functionptr) Java_gnu_classpath_jdwp_VMFrame_setValue,
 316         (functionptr) Java_gnu_classpath_jdwp_VMFrame_getValue,
 317         (functionptr) Java_gnu_classpath_jdwp_VMMethod_getName,
 318         (functionptr) Java_gnu_classpath_jdwp_VMMethod_getSignature,
 319         (functionptr) Java_gnu_classpath_jdwp_VMMethod_getModifiers,
 320         (functionptr) Java_gnu_classpath_jdwp_VMMethod_getLineTable,
 321         (functionptr) Java_gnu_classpath_jdwp_VMMethod_getVariableTable
 322 #endif
 323
 324 #elif defined(ENABLE_JAVAME_CLDC1_1)
 325         (functionptr) Java_com_sun_cldc_io_ResourceInputStream_open,
 326
 327         (functionptr) Java_com_sun_cldc_io_j2me_socket_Protocol_open0,
 328         (functionptr) Java_com_sun_cldc_io_j2me_socket_Protocol_readBuf,
 329         (functionptr) Java_com_sun_cldc_io_j2me_socket_Protocol_writeByte,
 330
 331         (functionptr) Java_com_sun_cldchi_io_ConsoleOutputStream_write,
 332
 333         (functionptr) Java_java_lang_Class_forName,
 334         (functionptr) Java_java_lang_Class_newInstance,
 335         (functionptr) Java_java_lang_Class_isInstance,
 336         (functionptr) Java_java_lang_Class_isAssignableFrom,
 337         (functionptr) Java_java_lang_Class_isInterface,
 338         (functionptr) Java_java_lang_Class_isArray,
 339         (functionptr) Java_java_lang_Class_getName,
 340
 341         (functionptr) Java_java_lang_Double_doubleToLongBits,
 342
 343         (functionptr) Java_java_lang_Float_floatToIntBits,
 344
 345         (functionptr) Java_java_lang_Math_ceil,
 346         (functionptr) Java_java_lang_Math_cos,
 347         (functionptr) Java_java_lang_Math_floor,
 348         (functionptr) Java_java_lang_Math_sin,
 349         (functionptr) Java_java_lang_Math_sqrt,
 350         (functionptr) Java_java_lang_Math_tan,
 351
 352         (functionptr) Java_java_lang_Object_hashCode,
 353         (functionptr) Java_java_lang_Object_notify,
 354         (functionptr) Java_java_lang_Object_wait,
 355
 356         (functionptr) Java_java_lang_Runtime_exitInternal,
 357         (functionptr) Java_java_lang_Runtime_freeMemory,
 358         (functionptr) Java_java_lang_Runtime_totalMemory,
 359         (functionptr) Java_java_lang_Runtime_gc,
 360
 361         (functionptr) Java_java_lang_String_hashCode,
 362         (functionptr) Java_java_lang_String_indexOf__I,
 363         (functionptr) Java_java_lang_String_indexOf__II,
 364         (functionptr) Java_java_lang_String_lastIndexOf__II,
 365         (functionptr) Java_java_lang_String_intern,
 366
 367         (functionptr) Java_java_lang_System_getProperty0,
 368
 369         (functionptr) Java_java_lang_Thread_currentThread,
 370         (functionptr) Java_java_lang_Thread_setPriority0,
 371         (functionptr) Java_java_lang_Thread_start0,
 372         (functionptr) Java_java_lang_Thread_yield,
 373
 374         (functionptr) Java_java_lang_Throwable_printStackTrace,
 375         (functionptr) Java_java_lang_Throwable_fillInStackTrace
 376 #endif
 377 };
 378
 379 #endif /* defined(ENABLE_LIBJVM) */
 380
 381
 382 /* tables for methods *********************************************************/
 383
 384 #if defined(WITH_STATIC_CLASSPATH)
 385 #define NATIVETABLESIZE  (sizeof(nativetable)/sizeof(struct nativeref))
 386
 387 /* table for fast string comparison */
 388 static nativecompref nativecomptable[NATIVETABLESIZE];
 389
 390 /* string comparsion table initialized */
 391 static bool nativecompdone = false;
 392 #endif
 393
 394
 395 /* global variables ***********************************************************/
 396
 397 #if !defined(WITH_STATIC_CLASSPATH)
 398 static hashtable *hashtable_library;
 399 static lt_dlhandle mainhandle;
 400 #endif
 401
 402
 403 /* native_init *****************************************************************
 404
 405    Initializes the native subsystem.
 406
 407 *******************************************************************************/
 408
 409 bool native_init(void)
 410 {
 411 #if !defined(WITH_STATIC_CLASSPATH)
 412         /* initialize libltdl */
 413
 414         if (lt_dlinit())
 415                 vm_abort("native_init: lt_dlinit failed: %s\n", lt_dlerror());
 416
 417         /* Get the handle for the main program or for the libjvm.so,
 418            depends on the configuration. */
 419
 420 # if defined(ENABLE_LIBJVM)
 421         /* First try to open where dlopen searches, e.g. LD_LIBRARY_PATH.
 422            If not found, try the absolute path. */
 423
 424         if (!(mainhandle = lt_dlopenext("libjvm")))
 425                 if (!(mainhandle = lt_dlopenext(cacao_libjvm)))
 426                         vm_abort("native_init: lt_dlopenext failed: %s\n", lt_dlerror());
 427 # else
 428         if (!(mainhandle = lt_dlopen(NULL)))
 429                 vm_abort("native_init: lt_dlopen failed: %s\n", lt_dlerror());
 430 # endif
 431
 432         /* initialize library hashtable, 10 entries should be enough */
 433
 434         hashtable_library = NEW(hashtable);
 435
 436         hashtable_create(hashtable_library, 10);
 437 #endif
 438
 439         /* everything's ok */
 440
 441         return true;
 442 }
 443
 444
 445 /* native_hashtable_library_add ************************************************
 446
 447    Adds an entry to the native library hashtable.
 448
 449 *******************************************************************************/
 450
 451 #if !defined(WITH_STATIC_CLASSPATH)
 452 void native_hashtable_library_add(utf *filename, java_objectheader *loader,
 453                                                                   lt_dlhandle handle)
 454 {
 455         hashtable_classloader_entry    *cle;
 456         hashtable_library_loader_entry *le;
 457         hashtable_library_name_entry   *ne; /* library name                       */
 458         u4   key;                           /* hashkey                            */
 459         u4   slot;                          /* slot in hashtable                  */
 460
 461         LOCK_MONITOR_ENTER(hashtable_library->header);
 462
 463         /* insert loader into the classloader hashtable */
 464
 465         cle = loader_hashtable_classloader_add(loader);
 466
 467         /* normally addresses are aligned to 4, 8 or 16 bytes */
 468
 469         key  = ((u4) (ptrint) cle) >> 4;        /* align to 16-byte boundaries    */
 470         slot = key & (hashtable_library->size - 1);
 471         le   = hashtable_library->ptr[slot];
 472
 473         /* search external hash chain for the entry */
 474
 475         while (le) {
 476                 if (le->cle == cle)
 477                         break;
 478
 479                 le = le->hashlink;                  /* next element in external chain */
 480         }
 481
 482         /* no loader found? create a new entry */
 483
 484         if (le == NULL) {
 485                 le = NEW(hashtable_library_loader_entry);
 486
 487                 le->cle   = cle;
 488                 le->namelink = NULL;
 489
 490                 /* insert entry into hashtable */
 491
 492                 le->hashlink =
 493                         (hashtable_library_loader_entry *) hashtable_library->ptr[slot];
 494                 hashtable_library->ptr[slot] = le;
 495
 496                 /* update number of hashtable-entries */
 497
 498                 hashtable_library->entries++;
 499         }
 500
 501
 502         /* search for library name */
 503
 504         ne = le->namelink;
 505
 506         while (ne) {
 507                 if (ne->name == filename) {
 508                         LOCK_MONITOR_EXIT(hashtable_library->header);
 509
 510                         return;
 511                 }
 512
 513                 ne = ne->hashlink;                  /* next element in external chain */
 514         }
 515
 516         /* not found? add the library name to the classloader */
 517
 518         ne = NEW(hashtable_library_name_entry);
 519
 520         ne->name   = filename;
 521         ne->handle = handle;
 522
 523         /* insert entry into external chain */
 524
 525         ne->hashlink = le->namelink;
 526         le->namelink = ne;
 527
 528         LOCK_MONITOR_EXIT(hashtable_library->header);
 529 }
 530 #endif /* !defined(WITH_STATIC_CLASSPATH) */
 531
 532
 533 /* native_hashtable_library_find ***********************************************
 534
 535    Find an entry in the native library hashtable.
 536
 537 *******************************************************************************/
 538
 539 #if !defined(WITH_STATIC_CLASSPATH)
 540 hashtable_library_name_entry *native_hashtable_library_find(utf *filename,
 541                                                                                                                         java_objectheader *loader)
 542 {
 543         hashtable_classloader_entry    *cle;
 544         hashtable_library_loader_entry *le;
 545         hashtable_library_name_entry   *ne; /* library name                       */
 546         u4   key;                           /* hashkey                            */
 547         u4   slot;                          /* slot in hashtable                  */
 548
 549         /* search loader in the classloader hashtable */
 550
 551         cle = loader_hashtable_classloader_find(loader);
 552
 553         if (!cle)
 554                 return NULL;
 555
 556         /* normally addresses are aligned to 4, 8 or 16 bytes */
 557
 558         key  = ((u4) (ptrint) cle) >> 4;        /* align to 16-byte boundaries    */
 559         slot = key & (hashtable_library->size - 1);
 560         le   = hashtable_library->ptr[slot];
 561
 562         /* search external hash chain for the entry */
 563
 564         while (le) {
 565                 if (le->cle == cle)
 566                         break;
 567
 568                 le = le->hashlink;                  /* next element in external chain */
 569         }
 570
 571         /* no loader found? return NULL */
 572
 573         if (!le)
 574                 return NULL;
 575
 576         /* search for library name */
 577
 578         ne = le->namelink;
 579
 580         while (ne) {
 581                 if (ne->name == filename)
 582                         return ne;
 583
 584                 ne = ne->hashlink;                  /* next element in external chain */
 585         }
 586
 587         /* return entry, if no entry was found, ne is NULL */
 588
 589         return ne;
 590 }
 591 #endif /* !defined(WITH_STATIC_CLASSPATH) */
 592
 593
 594 /* native_findfunction *********************************************************
 595
 596    Looks up a method (must have the same class name, method name,
 597    descriptor and 'static'ness) and returns a function pointer to it.
 598    Returns: function pointer or NULL (if there is no such method)
 599
 600    Remark: For faster operation, the names/descriptors are converted
 601    from C strings to Unicode the first time this function is called.
 602
 603 *******************************************************************************/
 604
 605 #if defined(WITH_STATIC_CLASSPATH)
 606 functionptr native_findfunction(utf *cname, utf *mname, utf *desc,
 607                                                                 bool isstatic)
 608 {
 609         /* entry of table for fast string comparison */
 610         struct nativecompref *n;
 611         s4 i;
 612
 613         isstatic = isstatic ? true : false;
 614
 615         if (!nativecompdone) {
 616                 for (i = 0; i < NATIVETABLESIZE; i++) {
 617                         nativecomptable[i].classname  =
 618                                 utf_new_char(nativetable[i].classname);
 619
 620                         nativecomptable[i].methodname =
 621                                 utf_new_char(nativetable[i].methodname);
 622
 623                         nativecomptable[i].descriptor =
 624                                 utf_new_char(nativetable[i].descriptor);
 625
 626                         nativecomptable[i].isstatic   = nativetable[i].isstatic;
 627                         nativecomptable[i].func       = nativetable[i].func;
 628                 }
 629
 630                 nativecompdone = true;
 631         }
 632
 633         for (i = 0; i < NATIVETABLESIZE; i++) {
 634                 n = &(nativecomptable[i]);
 635
 636                 if (cname == n->classname && mname == n->methodname &&
 637                     desc == n->descriptor && isstatic == n->isstatic)
 638                         return n->func;
 639         }
 640
 641         /* no function was found, throw exception */
 642
 643         *exceptionptr =
 644                         new_exception_utfmessage(string_java_lang_UnsatisfiedLinkError,
 645                                                                          mname);
 646
 647         return NULL;
 648 }
 649 #endif /* defined(WITH_STATIC_CLASSPATH) */
 650
 651
 652 /* native_make_overloaded_function *********************************************
 653
 654    XXX
 655
 656 *******************************************************************************/
 657
 658 #if !defined(WITH_STATIC_CLASSPATH)
 659 static char *native_make_overloaded_function(char *name, utf *desc)
 660 {
 661         char *newname;
 662         s4    namelen;
 663         char *utf_ptr;
 664         u2    c;
 665         s4    i;
 666
 667         utf_ptr = desc->text;
 668         namelen = strlen(name) + strlen("__") + strlen("0");
 669
 670         /* calculate additional length */
 671
 672         while ((c = utf_nextu2(&utf_ptr)) != ')') {
 673                 switch (c) {
 674                 case 'Z':
 675                 case 'B':
 676                 case 'C':
 677                 case 'S':
 678                 case 'I':
 679                 case 'J':
 680                 case 'F':
 681                 case 'D':
 682                         namelen++;
 683                         break;
 684                 case '[':
 685                         namelen += 2;
 686                         break;
 687                 case 'L':
 688                         namelen++;
 689                         while (utf_nextu2(&utf_ptr) != ';')
 690                                 namelen++;
 691                         namelen += 2;
 692                         break;
 693                 case '(':
 694                         break;
 695                 default:
 696                         assert(0);
 697                 }
 698         }
 699
 700
 701         /* reallocate memory */
 702
 703         i = strlen(name);
 704
 705         newname = DMNEW(char, namelen);
 706         MCOPY(newname, name, char, i);
 707
 708         utf_ptr = desc->text;
 709
 710         newname[i++] = '_';
 711         newname[i++] = '_';
 712
 713         while ((c = utf_nextu2(&utf_ptr)) != ')') {
 714                 switch (c) {
 715                 case 'Z':
 716                 case 'B':
 717                 case 'C':
 718                 case 'S':
 719                 case 'J':
 720                 case 'I':
 721                 case 'F':
 722                 case 'D':
 723                         newname[i++] = c;
 724                         break;
 725                 case '[':
 726                         newname[i++] = '_';
 727                         newname[i++] = '3';
 728                         break;
 729                 case 'L':
 730                         newname[i++] = 'L';
 731                         while ((c = utf_nextu2(&utf_ptr)) != ';')
 732                                 if (((c >= 'a') && (c <= 'z')) ||
 733                                         ((c >= 'A') && (c <= 'Z')) ||
 734                                         ((c >= '0') && (c <= '9')))
 735                                         newname[i++] = c;
 736                                 else
 737                                         newname[i++] = '_';
 738                         newname[i++] = '_';
 739                         newname[i++] = '2';
 740                         break;
 741                 case '(':
 742                         break;
 743                 default:
 744                         assert(0);
 745                 }
 746         }
 747
 748         /* close string */
 749
 750         newname[i] = '\0';
 751
 752         return newname;
 753 }
 754
 755
 756 /* native_insert_char **********************************************************
 757
 758    Inserts the passed UTF character into the native method name.  If
 759    necessary it is escaped properly.
 760
 761 *******************************************************************************/
 762
 763 static s4 native_insert_char(char *name, u4 pos, u2 c)
 764 {
 765         s4 val;
 766         s4 i;
 767
 768         switch (c) {
 769         case '/':
 770         case '.':
 771                 /* replace '/' or '.' with '_' */
 772                 name[pos] = '_';
 773                 break;
 774
 775         case '_':
 776                 /* escape sequence for '_' is '_1' */
 777                 name[pos]   = '_';
 778                 name[++pos] = '1';
 779                 break;
 780
 781         case ';':
 782                 /* escape sequence for ';' is '_2' */
 783                 name[pos]   = '_';
 784                 name[++pos] = '2';
 785                 break;
 786
 787         case '[':
 788                 /* escape sequence for '[' is '_1' */
 789                 name[pos]   = '_';
 790                 name[++pos] = '3';
 791                 break;
 792
 793         default:
 794                 if (isalnum(c))
 795                         name[pos] = c;
 796                 else {
 797                         /* unicode character */
 798                         name[pos]   = '_';
 799                         name[++pos] = '0';
 800
 801                         for (i = 0; i < 4; ++i) {
 802                                 val = c & 0x0f;
 803                                 name[pos + 4 - i] = (val > 10) ? ('a' + val - 10) : ('0' + val);
 804                                 c >>= 4;
 805                         }
 806
 807                         pos += 4;
 808                 }
 809                 break;
 810         }
 811
 812         /* return the new buffer index */
 813
 814         return pos;
 815 }
 816
 817
 818 /* native_resolve_function *****************************************************
 819
 820    Resolves a native function, maybe from a dynamic library.
 821
 822 *******************************************************************************/
 823
 824 functionptr native_resolve_function(methodinfo *m)
 825 {
 826         lt_ptr                          sym;
 827         char                           *name;
 828         char                           *newname;
 829         s4                              namelen;
 830         char                           *utf_ptr;
 831         char                           *utf_endptr;
 832         u2                              c;
 833         u4                              pos;
 834         s4                              dumpsize;
 835         hashtable_library_loader_entry *le;
 836         hashtable_library_name_entry   *ne;
 837         u4                              key;    /* hashkey                        */
 838         u4                              slot;   /* slot in hashtable              */
 839
 840         /* verbose output */
 841
 842         if (opt_verbosejni) {
 843                 printf("[Dynamic-linking native method ");
 844                 utf_display_printable_ascii_classname(m->class->name);
 845                 printf(".");
 846                 utf_display_printable_ascii(m->name);
 847                 printf(" ... ");
 848         }
 849
 850         /* Calculate length of native function name.  We multiply the
 851            class and method name length by 6 as this is the maxium
 852            escape-sequence that can be generated (unicode). */
 853
 854         namelen = strlen("Java_") +
 855                 utf_get_number_of_u2s(m->class->name) * 6 +
 856                 strlen("_") +
 857                 utf_get_number_of_u2s(m->name) * 6 +
 858                 strlen("0");
 859
 860         /* allocate memory */
 861
 862         dumpsize = dump_size();
 863
 864         name = DMNEW(char, namelen);
 865
 866         /* generate name of native functions */
 867
 868         strcpy(name, "Java_");
 869         pos = strlen("Java_");
 870
 871         utf_ptr    = m->class->name->text;
 872         utf_endptr = UTF_END(m->class->name);
 873
 874         for (; utf_ptr < utf_endptr; utf_ptr++, pos++) {
 875                 c   = *utf_ptr;
 876                 pos = native_insert_char(name, pos, c);
 877         }
 878
 879         /* seperator between class and method */
 880
 881         name[pos++] = '_';
 882
 883         utf_ptr    = m->name->text;
 884         utf_endptr = UTF_END(m->name);
 885
 886         for (; utf_ptr < utf_endptr; utf_ptr++, pos++) {
 887                 c   = *utf_ptr;
 888                 pos = native_insert_char(name, pos, c);
 889         }
 890
 891         /* close string */
 892
 893         name[pos] = '\0';
 894
 895         /* check for an buffer overflow */
 896
 897         assert(pos <= namelen);
 898
 899         /* generate overloaded function (having the types in it's name)           */
 900
 901         newname = native_make_overloaded_function(name, m->descriptor);
 902
 903         /* check the library hash entries of the classloader of the
 904            methods's class  */
 905
 906         sym = NULL;
 907
 908         /* normally addresses are aligned to 4, 8 or 16 bytes */
 909
 910         key  = ((u4) (ptrint) m->class->classloader) >> 4;    /* align to 16-byte */
 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 /*
1157  * These are local overrides for various environment variables in Emacs.
1158  * Please do not remove this and leave it at the end of the file, where
1159  * Emacs will automagically detect them.
1160  * ---------------------------------------------------------------------
1161  * Local variables:
1162  * mode: c
1163  * indent-tabs-mode: t
1164  * c-basic-offset: 4
1165  * tab-width: 4
1166  * End:
1167  */